1 /******************************************************************* 2 * This file is part of the Emulex Linux Device Driver for * 3 * Fibre Channel Host Bus Adapters. * 4 * Copyright (C) 2017-2023 Broadcom. All Rights Reserved. The term * 5 * “Broadcom” refers to Broadcom Inc. and/or its subsidiaries. * 6 * Copyright (C) 2004-2016 Emulex. All rights reserved. * 7 * EMULEX and SLI are trademarks of Emulex. * 8 * www.broadcom.com * 9 * Portions Copyright (C) 2004-2005 Christoph Hellwig * 10 * * 11 * This program is free software; you can redistribute it and/or * 12 * modify it under the terms of version 2 of the GNU General * 13 * Public License as published by the Free Software Foundation. * 14 * This program is distributed in the hope that it will be useful. * 15 * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND * 16 * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, * 17 * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE * 18 * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD * 19 * TO BE LEGALLY INVALID. See the GNU General Public License for * 20 * more details, a copy of which can be found in the file COPYING * 21 * included with this package. * 22 *******************************************************************/ 23 24 #include <linux/blkdev.h> 25 #include <linux/delay.h> 26 #include <linux/slab.h> 27 #include <linux/pci.h> 28 #include <linux/kthread.h> 29 #include <linux/interrupt.h> 30 #include <linux/lockdep.h> 31 #include <linux/utsname.h> 32 33 #include <scsi/scsi.h> 34 #include <scsi/scsi_device.h> 35 #include <scsi/scsi_host.h> 36 #include <scsi/scsi_transport_fc.h> 37 #include <scsi/fc/fc_fs.h> 38 39 #include "lpfc_hw4.h" 40 #include "lpfc_hw.h" 41 #include "lpfc_nl.h" 42 #include "lpfc_disc.h" 43 #include "lpfc_sli.h" 44 #include "lpfc_sli4.h" 45 #include "lpfc.h" 46 #include "lpfc_scsi.h" 47 #include "lpfc_nvme.h" 48 #include "lpfc_logmsg.h" 49 #include "lpfc_crtn.h" 50 #include "lpfc_vport.h" 51 #include "lpfc_debugfs.h" 52 53 /* AlpaArray for assignment of scsid for scan-down and bind_method */ 54 static uint8_t lpfcAlpaArray[] = { 55 0xEF, 0xE8, 0xE4, 0xE2, 0xE1, 0xE0, 0xDC, 0xDA, 0xD9, 0xD6, 56 0xD5, 0xD4, 0xD3, 0xD2, 0xD1, 0xCE, 0xCD, 0xCC, 0xCB, 0xCA, 57 0xC9, 0xC7, 0xC6, 0xC5, 0xC3, 0xBC, 0xBA, 0xB9, 0xB6, 0xB5, 58 0xB4, 0xB3, 0xB2, 0xB1, 0xAE, 0xAD, 0xAC, 0xAB, 0xAA, 0xA9, 59 0xA7, 0xA6, 0xA5, 0xA3, 0x9F, 0x9E, 0x9D, 0x9B, 0x98, 0x97, 60 0x90, 0x8F, 0x88, 0x84, 0x82, 0x81, 0x80, 0x7C, 0x7A, 0x79, 61 0x76, 0x75, 0x74, 0x73, 0x72, 0x71, 0x6E, 0x6D, 0x6C, 0x6B, 62 0x6A, 0x69, 0x67, 0x66, 0x65, 0x63, 0x5C, 0x5A, 0x59, 0x56, 63 0x55, 0x54, 0x53, 0x52, 0x51, 0x4E, 0x4D, 0x4C, 0x4B, 0x4A, 64 0x49, 0x47, 0x46, 0x45, 0x43, 0x3C, 0x3A, 0x39, 0x36, 0x35, 65 0x34, 0x33, 0x32, 0x31, 0x2E, 0x2D, 0x2C, 0x2B, 0x2A, 0x29, 66 0x27, 0x26, 0x25, 0x23, 0x1F, 0x1E, 0x1D, 0x1B, 0x18, 0x17, 67 0x10, 0x0F, 0x08, 0x04, 0x02, 0x01 68 }; 69 70 static void lpfc_disc_timeout_handler(struct lpfc_vport *); 71 static void lpfc_disc_flush_list(struct lpfc_vport *vport); 72 static void lpfc_unregister_fcfi_cmpl(struct lpfc_hba *, LPFC_MBOXQ_t *); 73 static int lpfc_fcf_inuse(struct lpfc_hba *); 74 static void lpfc_mbx_cmpl_read_sparam(struct lpfc_hba *, LPFC_MBOXQ_t *); 75 static void lpfc_check_inactive_vmid(struct lpfc_hba *phba); 76 static void lpfc_check_vmid_qfpa_issue(struct lpfc_hba *phba); 77 78 static int 79 lpfc_valid_xpt_node(struct lpfc_nodelist *ndlp) 80 { 81 if (ndlp->nlp_fc4_type || 82 ndlp->nlp_type & NLP_FABRIC) 83 return 1; 84 return 0; 85 } 86 /* The source of a terminate rport I/O is either a dev_loss_tmo 87 * event or a call to fc_remove_host. While the rport should be 88 * valid during these downcalls, the transport can call twice 89 * in a single event. This routine provides somoe protection 90 * as the NDLP isn't really free, just released to the pool. 91 */ 92 static int 93 lpfc_rport_invalid(struct fc_rport *rport) 94 { 95 struct lpfc_rport_data *rdata; 96 struct lpfc_nodelist *ndlp; 97 98 if (!rport) { 99 pr_err("**** %s: NULL rport, exit.\n", __func__); 100 return -EINVAL; 101 } 102 103 rdata = rport->dd_data; 104 if (!rdata) { 105 pr_err("**** %s: NULL dd_data on rport x%px SID x%x\n", 106 __func__, rport, rport->scsi_target_id); 107 return -EINVAL; 108 } 109 110 ndlp = rdata->pnode; 111 if (!rdata->pnode) { 112 pr_info("**** %s: NULL ndlp on rport x%px SID x%x\n", 113 __func__, rport, rport->scsi_target_id); 114 return -EINVAL; 115 } 116 117 if (!ndlp->vport) { 118 pr_err("**** %s: Null vport on ndlp x%px, DID x%x rport x%px " 119 "SID x%x\n", __func__, ndlp, ndlp->nlp_DID, rport, 120 rport->scsi_target_id); 121 return -EINVAL; 122 } 123 return 0; 124 } 125 126 void 127 lpfc_terminate_rport_io(struct fc_rport *rport) 128 { 129 struct lpfc_rport_data *rdata; 130 struct lpfc_nodelist *ndlp; 131 struct lpfc_vport *vport; 132 133 if (lpfc_rport_invalid(rport)) 134 return; 135 136 rdata = rport->dd_data; 137 ndlp = rdata->pnode; 138 vport = ndlp->vport; 139 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT, 140 "rport terminate: sid:x%x did:x%x flg:x%x", 141 ndlp->nlp_sid, ndlp->nlp_DID, ndlp->nlp_flag); 142 143 if (ndlp->nlp_sid != NLP_NO_SID) 144 lpfc_sli_abort_iocb(vport, ndlp->nlp_sid, 0, LPFC_CTX_TGT); 145 } 146 147 /* 148 * This function will be called when dev_loss_tmo fire. 149 */ 150 void 151 lpfc_dev_loss_tmo_callbk(struct fc_rport *rport) 152 { 153 struct lpfc_nodelist *ndlp; 154 struct lpfc_vport *vport; 155 struct lpfc_hba *phba; 156 struct lpfc_work_evt *evtp; 157 unsigned long iflags; 158 159 ndlp = ((struct lpfc_rport_data *)rport->dd_data)->pnode; 160 if (!ndlp) 161 return; 162 163 vport = ndlp->vport; 164 phba = vport->phba; 165 166 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT, 167 "rport devlosscb: sid:x%x did:x%x flg:x%x", 168 ndlp->nlp_sid, ndlp->nlp_DID, ndlp->nlp_flag); 169 170 lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_NODE, 171 "3181 dev_loss_callbk x%06x, rport x%px flg x%x " 172 "load_flag x%x refcnt %d state %d xpt x%x\n", 173 ndlp->nlp_DID, ndlp->rport, ndlp->nlp_flag, 174 vport->load_flag, kref_read(&ndlp->kref), 175 ndlp->nlp_state, ndlp->fc4_xpt_flags); 176 177 /* Don't schedule a worker thread event if the vport is going down. 178 * The teardown process cleans up the node via lpfc_drop_node. 179 */ 180 if (vport->load_flag & FC_UNLOADING) { 181 ((struct lpfc_rport_data *)rport->dd_data)->pnode = NULL; 182 ndlp->rport = NULL; 183 184 ndlp->fc4_xpt_flags &= ~SCSI_XPT_REGD; 185 /* clear the NLP_XPT_REGD if the node is not registered 186 * with nvme-fc 187 */ 188 if (ndlp->fc4_xpt_flags == NLP_XPT_REGD) 189 ndlp->fc4_xpt_flags &= ~NLP_XPT_REGD; 190 191 /* Remove the node reference from remote_port_add now. 192 * The driver will not call remote_port_delete. 193 */ 194 lpfc_nlp_put(ndlp); 195 return; 196 } 197 198 if (ndlp->nlp_state == NLP_STE_MAPPED_NODE) 199 return; 200 201 if (rport->port_name != wwn_to_u64(ndlp->nlp_portname.u.wwn)) 202 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 203 "6789 rport name %llx != node port name %llx", 204 rport->port_name, 205 wwn_to_u64(ndlp->nlp_portname.u.wwn)); 206 207 evtp = &ndlp->dev_loss_evt; 208 209 if (!list_empty(&evtp->evt_listp)) { 210 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 211 "6790 rport name %llx dev_loss_evt pending\n", 212 rport->port_name); 213 return; 214 } 215 216 spin_lock_irqsave(&ndlp->lock, iflags); 217 ndlp->nlp_flag |= NLP_IN_DEV_LOSS; 218 219 /* If there is a PLOGI in progress, and we are in a 220 * NLP_NPR_2B_DISC state, don't turn off the flag. 221 */ 222 if (ndlp->nlp_state != NLP_STE_PLOGI_ISSUE) 223 ndlp->nlp_flag &= ~NLP_NPR_2B_DISC; 224 225 /* 226 * The backend does not expect any more calls associated with this 227 * rport. Remove the association between rport and ndlp. 228 */ 229 ndlp->fc4_xpt_flags &= ~SCSI_XPT_REGD; 230 ((struct lpfc_rport_data *)rport->dd_data)->pnode = NULL; 231 ndlp->rport = NULL; 232 spin_unlock_irqrestore(&ndlp->lock, iflags); 233 234 if (phba->worker_thread) { 235 /* We need to hold the node by incrementing the reference 236 * count until this queued work is done 237 */ 238 evtp->evt_arg1 = lpfc_nlp_get(ndlp); 239 240 spin_lock_irqsave(&phba->hbalock, iflags); 241 if (evtp->evt_arg1) { 242 evtp->evt = LPFC_EVT_DEV_LOSS; 243 list_add_tail(&evtp->evt_listp, &phba->work_list); 244 lpfc_worker_wake_up(phba); 245 } 246 spin_unlock_irqrestore(&phba->hbalock, iflags); 247 } else { 248 lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_NODE, 249 "3188 worker thread is stopped %s x%06x, " 250 " rport x%px flg x%x load_flag x%x refcnt " 251 "%d\n", __func__, ndlp->nlp_DID, 252 ndlp->rport, ndlp->nlp_flag, 253 vport->load_flag, kref_read(&ndlp->kref)); 254 if (!(ndlp->fc4_xpt_flags & NVME_XPT_REGD)) { 255 spin_lock_irqsave(&ndlp->lock, iflags); 256 /* Node is in dev loss. No further transaction. */ 257 ndlp->nlp_flag &= ~NLP_IN_DEV_LOSS; 258 spin_unlock_irqrestore(&ndlp->lock, iflags); 259 lpfc_disc_state_machine(vport, ndlp, NULL, 260 NLP_EVT_DEVICE_RM); 261 } 262 263 } 264 265 return; 266 } 267 268 /** 269 * lpfc_check_inactive_vmid_one - VMID inactivity checker for a vport 270 * @vport: Pointer to vport context object. 271 * 272 * This function checks for idle VMID entries related to a particular vport. If 273 * found unused/idle, free them accordingly. 274 **/ 275 static void lpfc_check_inactive_vmid_one(struct lpfc_vport *vport) 276 { 277 u16 keep; 278 u32 difftime = 0, r, bucket; 279 u64 *lta; 280 int cpu; 281 struct lpfc_vmid *vmp; 282 283 write_lock(&vport->vmid_lock); 284 285 if (!vport->cur_vmid_cnt) 286 goto out; 287 288 /* iterate through the table */ 289 hash_for_each(vport->hash_table, bucket, vmp, hnode) { 290 keep = 0; 291 if (vmp->flag & LPFC_VMID_REGISTERED) { 292 /* check if the particular VMID is in use */ 293 /* for all available per cpu variable */ 294 for_each_possible_cpu(cpu) { 295 /* if last access time is less than timeout */ 296 lta = per_cpu_ptr(vmp->last_io_time, cpu); 297 if (!lta) 298 continue; 299 difftime = (jiffies) - (*lta); 300 if ((vport->vmid_inactivity_timeout * 301 JIFFIES_PER_HR) > difftime) { 302 keep = 1; 303 break; 304 } 305 } 306 307 /* if none of the cpus have been used by the vm, */ 308 /* remove the entry if already registered */ 309 if (!keep) { 310 /* mark the entry for deregistration */ 311 vmp->flag = LPFC_VMID_DE_REGISTER; 312 write_unlock(&vport->vmid_lock); 313 if (vport->vmid_priority_tagging) 314 r = lpfc_vmid_uvem(vport, vmp, false); 315 else 316 r = lpfc_vmid_cmd(vport, 317 SLI_CTAS_DAPP_IDENT, 318 vmp); 319 320 /* decrement number of active vms and mark */ 321 /* entry in slot as free */ 322 write_lock(&vport->vmid_lock); 323 if (!r) { 324 struct lpfc_vmid *ht = vmp; 325 326 vport->cur_vmid_cnt--; 327 ht->flag = LPFC_VMID_SLOT_FREE; 328 free_percpu(ht->last_io_time); 329 ht->last_io_time = NULL; 330 hash_del(&ht->hnode); 331 } 332 } 333 } 334 } 335 out: 336 write_unlock(&vport->vmid_lock); 337 } 338 339 /** 340 * lpfc_check_inactive_vmid - VMID inactivity checker 341 * @phba: Pointer to hba context object. 342 * 343 * This function is called from the worker thread to determine if an entry in 344 * the VMID table can be released since there was no I/O activity seen from that 345 * particular VM for the specified time. When this happens, the entry in the 346 * table is released and also the resources on the switch cleared. 347 **/ 348 349 static void lpfc_check_inactive_vmid(struct lpfc_hba *phba) 350 { 351 struct lpfc_vport *vport; 352 struct lpfc_vport **vports; 353 int i; 354 355 vports = lpfc_create_vport_work_array(phba); 356 if (!vports) 357 return; 358 359 for (i = 0; i <= phba->max_vports; i++) { 360 if ((!vports[i]) && (i == 0)) 361 vport = phba->pport; 362 else 363 vport = vports[i]; 364 if (!vport) 365 break; 366 367 lpfc_check_inactive_vmid_one(vport); 368 } 369 lpfc_destroy_vport_work_array(phba, vports); 370 } 371 372 /** 373 * lpfc_check_nlp_post_devloss - Check to restore ndlp refcnt after devloss 374 * @vport: Pointer to vport object. 375 * @ndlp: Pointer to remote node object. 376 * 377 * If NLP_IN_RECOV_POST_DEV_LOSS flag was set due to outstanding recovery of 378 * node during dev_loss_tmo processing, then this function restores the nlp_put 379 * kref decrement from lpfc_dev_loss_tmo_handler. 380 **/ 381 void 382 lpfc_check_nlp_post_devloss(struct lpfc_vport *vport, 383 struct lpfc_nodelist *ndlp) 384 { 385 unsigned long iflags; 386 387 spin_lock_irqsave(&ndlp->lock, iflags); 388 if (ndlp->save_flags & NLP_IN_RECOV_POST_DEV_LOSS) { 389 ndlp->save_flags &= ~NLP_IN_RECOV_POST_DEV_LOSS; 390 spin_unlock_irqrestore(&ndlp->lock, iflags); 391 lpfc_nlp_get(ndlp); 392 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY | LOG_NODE, 393 "8438 Devloss timeout reversed on DID x%x " 394 "refcnt %d ndlp %p flag x%x " 395 "port_state = x%x\n", 396 ndlp->nlp_DID, kref_read(&ndlp->kref), ndlp, 397 ndlp->nlp_flag, vport->port_state); 398 spin_lock_irqsave(&ndlp->lock, iflags); 399 } 400 spin_unlock_irqrestore(&ndlp->lock, iflags); 401 } 402 403 /** 404 * lpfc_dev_loss_tmo_handler - Remote node devloss timeout handler 405 * @ndlp: Pointer to remote node object. 406 * 407 * This function is called from the worker thread when devloss timeout timer 408 * expires. For SLI4 host, this routine shall return 1 when at lease one 409 * remote node, including this @ndlp, is still in use of FCF; otherwise, this 410 * routine shall return 0 when there is no remote node is still in use of FCF 411 * when devloss timeout happened to this @ndlp. 412 **/ 413 static int 414 lpfc_dev_loss_tmo_handler(struct lpfc_nodelist *ndlp) 415 { 416 struct lpfc_vport *vport; 417 struct lpfc_hba *phba; 418 uint8_t *name; 419 int warn_on = 0; 420 int fcf_inuse = 0; 421 bool recovering = false; 422 struct fc_vport *fc_vport = NULL; 423 unsigned long iflags; 424 425 vport = ndlp->vport; 426 name = (uint8_t *)&ndlp->nlp_portname; 427 phba = vport->phba; 428 429 if (phba->sli_rev == LPFC_SLI_REV4) 430 fcf_inuse = lpfc_fcf_inuse(phba); 431 432 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT, 433 "rport devlosstmo:did:x%x type:x%x id:x%x", 434 ndlp->nlp_DID, ndlp->nlp_type, ndlp->nlp_sid); 435 436 lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_NODE, 437 "3182 %s x%06x, nflag x%x xflags x%x refcnt %d\n", 438 __func__, ndlp->nlp_DID, ndlp->nlp_flag, 439 ndlp->fc4_xpt_flags, kref_read(&ndlp->kref)); 440 441 /* If the driver is recovering the rport, ignore devloss. */ 442 if (ndlp->nlp_state == NLP_STE_MAPPED_NODE) { 443 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, 444 "0284 Devloss timeout Ignored on " 445 "WWPN %x:%x:%x:%x:%x:%x:%x:%x " 446 "NPort x%x\n", 447 *name, *(name+1), *(name+2), *(name+3), 448 *(name+4), *(name+5), *(name+6), *(name+7), 449 ndlp->nlp_DID); 450 451 spin_lock_irqsave(&ndlp->lock, iflags); 452 ndlp->nlp_flag &= ~NLP_IN_DEV_LOSS; 453 spin_unlock_irqrestore(&ndlp->lock, iflags); 454 return fcf_inuse; 455 } 456 457 /* Fabric nodes are done. */ 458 if (ndlp->nlp_type & NLP_FABRIC) { 459 spin_lock_irqsave(&ndlp->lock, iflags); 460 461 /* The driver has to account for a race between any fabric 462 * node that's in recovery when dev_loss_tmo expires. When this 463 * happens, the driver has to allow node recovery. 464 */ 465 switch (ndlp->nlp_DID) { 466 case Fabric_DID: 467 fc_vport = vport->fc_vport; 468 if (fc_vport) { 469 /* NPIV path. */ 470 if (fc_vport->vport_state == 471 FC_VPORT_INITIALIZING) 472 recovering = true; 473 } else { 474 /* Physical port path. */ 475 if (phba->hba_flag & HBA_FLOGI_OUTSTANDING) 476 recovering = true; 477 } 478 break; 479 case Fabric_Cntl_DID: 480 if (ndlp->nlp_flag & NLP_REG_LOGIN_SEND) 481 recovering = true; 482 break; 483 case FDMI_DID: 484 fallthrough; 485 case NameServer_DID: 486 if (ndlp->nlp_state >= NLP_STE_PLOGI_ISSUE && 487 ndlp->nlp_state <= NLP_STE_REG_LOGIN_ISSUE) 488 recovering = true; 489 break; 490 default: 491 /* Ensure the nlp_DID at least has the correct prefix. 492 * The fabric domain controller's last three nibbles 493 * vary so we handle it in the default case. 494 */ 495 if (ndlp->nlp_DID & Fabric_DID_MASK) { 496 if (ndlp->nlp_state >= NLP_STE_PLOGI_ISSUE && 497 ndlp->nlp_state <= NLP_STE_REG_LOGIN_ISSUE) 498 recovering = true; 499 } 500 break; 501 } 502 spin_unlock_irqrestore(&ndlp->lock, iflags); 503 504 /* Mark an NLP_IN_RECOV_POST_DEV_LOSS flag to know if reversing 505 * the following lpfc_nlp_put is necessary after fabric node is 506 * recovered. 507 */ 508 if (recovering) { 509 lpfc_printf_vlog(vport, KERN_INFO, 510 LOG_DISCOVERY | LOG_NODE, 511 "8436 Devloss timeout marked on " 512 "DID x%x refcnt %d ndlp %p " 513 "flag x%x port_state = x%x\n", 514 ndlp->nlp_DID, kref_read(&ndlp->kref), 515 ndlp, ndlp->nlp_flag, 516 vport->port_state); 517 spin_lock_irqsave(&ndlp->lock, iflags); 518 ndlp->save_flags |= NLP_IN_RECOV_POST_DEV_LOSS; 519 spin_unlock_irqrestore(&ndlp->lock, iflags); 520 } else if (ndlp->nlp_state == NLP_STE_UNMAPPED_NODE) { 521 /* Fabric node fully recovered before this dev_loss_tmo 522 * queue work is processed. Thus, ignore the 523 * dev_loss_tmo event. 524 */ 525 lpfc_printf_vlog(vport, KERN_INFO, 526 LOG_DISCOVERY | LOG_NODE, 527 "8437 Devloss timeout ignored on " 528 "DID x%x refcnt %d ndlp %p " 529 "flag x%x port_state = x%x\n", 530 ndlp->nlp_DID, kref_read(&ndlp->kref), 531 ndlp, ndlp->nlp_flag, 532 vport->port_state); 533 return fcf_inuse; 534 } 535 536 spin_lock_irqsave(&ndlp->lock, iflags); 537 ndlp->nlp_flag &= ~NLP_IN_DEV_LOSS; 538 spin_unlock_irqrestore(&ndlp->lock, iflags); 539 lpfc_nlp_put(ndlp); 540 return fcf_inuse; 541 } 542 543 if (ndlp->nlp_sid != NLP_NO_SID) { 544 warn_on = 1; 545 lpfc_sli_abort_iocb(vport, ndlp->nlp_sid, 0, LPFC_CTX_TGT); 546 } 547 548 if (warn_on) { 549 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 550 "0203 Devloss timeout on " 551 "WWPN %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x " 552 "NPort x%06x Data: x%x x%x x%x refcnt %d\n", 553 *name, *(name+1), *(name+2), *(name+3), 554 *(name+4), *(name+5), *(name+6), *(name+7), 555 ndlp->nlp_DID, ndlp->nlp_flag, 556 ndlp->nlp_state, ndlp->nlp_rpi, 557 kref_read(&ndlp->kref)); 558 } else { 559 lpfc_printf_vlog(vport, KERN_INFO, LOG_TRACE_EVENT, 560 "0204 Devloss timeout on " 561 "WWPN %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x " 562 "NPort x%06x Data: x%x x%x x%x\n", 563 *name, *(name+1), *(name+2), *(name+3), 564 *(name+4), *(name+5), *(name+6), *(name+7), 565 ndlp->nlp_DID, ndlp->nlp_flag, 566 ndlp->nlp_state, ndlp->nlp_rpi); 567 } 568 spin_lock_irqsave(&ndlp->lock, iflags); 569 ndlp->nlp_flag &= ~NLP_IN_DEV_LOSS; 570 spin_unlock_irqrestore(&ndlp->lock, iflags); 571 572 /* If we are devloss, but we are in the process of rediscovering the 573 * ndlp, don't issue a NLP_EVT_DEVICE_RM event. 574 */ 575 if (ndlp->nlp_state >= NLP_STE_PLOGI_ISSUE && 576 ndlp->nlp_state <= NLP_STE_PRLI_ISSUE) { 577 return fcf_inuse; 578 } 579 580 if (!(ndlp->fc4_xpt_flags & NVME_XPT_REGD)) 581 lpfc_disc_state_machine(vport, ndlp, NULL, NLP_EVT_DEVICE_RM); 582 583 return fcf_inuse; 584 } 585 586 static void lpfc_check_vmid_qfpa_issue(struct lpfc_hba *phba) 587 { 588 struct lpfc_vport *vport; 589 struct lpfc_vport **vports; 590 int i; 591 592 vports = lpfc_create_vport_work_array(phba); 593 if (!vports) 594 return; 595 596 for (i = 0; i <= phba->max_vports; i++) { 597 if ((!vports[i]) && (i == 0)) 598 vport = phba->pport; 599 else 600 vport = vports[i]; 601 if (!vport) 602 break; 603 604 if (vport->vmid_flag & LPFC_VMID_ISSUE_QFPA) { 605 if (!lpfc_issue_els_qfpa(vport)) 606 vport->vmid_flag &= ~LPFC_VMID_ISSUE_QFPA; 607 } 608 } 609 lpfc_destroy_vport_work_array(phba, vports); 610 } 611 612 /** 613 * lpfc_sli4_post_dev_loss_tmo_handler - SLI4 post devloss timeout handler 614 * @phba: Pointer to hba context object. 615 * @fcf_inuse: SLI4 FCF in-use state reported from devloss timeout handler. 616 * @nlp_did: remote node identifer with devloss timeout. 617 * 618 * This function is called from the worker thread after invoking devloss 619 * timeout handler and releasing the reference count for the ndlp with 620 * which the devloss timeout was handled for SLI4 host. For the devloss 621 * timeout of the last remote node which had been in use of FCF, when this 622 * routine is invoked, it shall be guaranteed that none of the remote are 623 * in-use of FCF. When devloss timeout to the last remote using the FCF, 624 * if the FIP engine is neither in FCF table scan process nor roundrobin 625 * failover process, the in-use FCF shall be unregistered. If the FIP 626 * engine is in FCF discovery process, the devloss timeout state shall 627 * be set for either the FCF table scan process or roundrobin failover 628 * process to unregister the in-use FCF. 629 **/ 630 static void 631 lpfc_sli4_post_dev_loss_tmo_handler(struct lpfc_hba *phba, int fcf_inuse, 632 uint32_t nlp_did) 633 { 634 /* If devloss timeout happened to a remote node when FCF had no 635 * longer been in-use, do nothing. 636 */ 637 if (!fcf_inuse) 638 return; 639 640 if ((phba->hba_flag & HBA_FIP_SUPPORT) && !lpfc_fcf_inuse(phba)) { 641 spin_lock_irq(&phba->hbalock); 642 if (phba->fcf.fcf_flag & FCF_DISCOVERY) { 643 if (phba->hba_flag & HBA_DEVLOSS_TMO) { 644 spin_unlock_irq(&phba->hbalock); 645 return; 646 } 647 phba->hba_flag |= HBA_DEVLOSS_TMO; 648 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 649 "2847 Last remote node (x%x) using " 650 "FCF devloss tmo\n", nlp_did); 651 } 652 if (phba->fcf.fcf_flag & FCF_REDISC_PROG) { 653 spin_unlock_irq(&phba->hbalock); 654 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 655 "2868 Devloss tmo to FCF rediscovery " 656 "in progress\n"); 657 return; 658 } 659 if (!(phba->hba_flag & (FCF_TS_INPROG | FCF_RR_INPROG))) { 660 spin_unlock_irq(&phba->hbalock); 661 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 662 "2869 Devloss tmo to idle FIP engine, " 663 "unreg in-use FCF and rescan.\n"); 664 /* Unregister in-use FCF and rescan */ 665 lpfc_unregister_fcf_rescan(phba); 666 return; 667 } 668 spin_unlock_irq(&phba->hbalock); 669 if (phba->hba_flag & FCF_TS_INPROG) 670 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 671 "2870 FCF table scan in progress\n"); 672 if (phba->hba_flag & FCF_RR_INPROG) 673 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 674 "2871 FLOGI roundrobin FCF failover " 675 "in progress\n"); 676 } 677 lpfc_unregister_unused_fcf(phba); 678 } 679 680 /** 681 * lpfc_alloc_fast_evt - Allocates data structure for posting event 682 * @phba: Pointer to hba context object. 683 * 684 * This function is called from the functions which need to post 685 * events from interrupt context. This function allocates data 686 * structure required for posting event. It also keeps track of 687 * number of events pending and prevent event storm when there are 688 * too many events. 689 **/ 690 struct lpfc_fast_path_event * 691 lpfc_alloc_fast_evt(struct lpfc_hba *phba) { 692 struct lpfc_fast_path_event *ret; 693 694 /* If there are lot of fast event do not exhaust memory due to this */ 695 if (atomic_read(&phba->fast_event_count) > LPFC_MAX_EVT_COUNT) 696 return NULL; 697 698 ret = kzalloc(sizeof(struct lpfc_fast_path_event), 699 GFP_ATOMIC); 700 if (ret) { 701 atomic_inc(&phba->fast_event_count); 702 INIT_LIST_HEAD(&ret->work_evt.evt_listp); 703 ret->work_evt.evt = LPFC_EVT_FASTPATH_MGMT_EVT; 704 } 705 return ret; 706 } 707 708 /** 709 * lpfc_free_fast_evt - Frees event data structure 710 * @phba: Pointer to hba context object. 711 * @evt: Event object which need to be freed. 712 * 713 * This function frees the data structure required for posting 714 * events. 715 **/ 716 void 717 lpfc_free_fast_evt(struct lpfc_hba *phba, 718 struct lpfc_fast_path_event *evt) { 719 720 atomic_dec(&phba->fast_event_count); 721 kfree(evt); 722 } 723 724 /** 725 * lpfc_send_fastpath_evt - Posts events generated from fast path 726 * @phba: Pointer to hba context object. 727 * @evtp: Event data structure. 728 * 729 * This function is called from worker thread, when the interrupt 730 * context need to post an event. This function posts the event 731 * to fc transport netlink interface. 732 **/ 733 static void 734 lpfc_send_fastpath_evt(struct lpfc_hba *phba, 735 struct lpfc_work_evt *evtp) 736 { 737 unsigned long evt_category, evt_sub_category; 738 struct lpfc_fast_path_event *fast_evt_data; 739 char *evt_data; 740 uint32_t evt_data_size; 741 struct Scsi_Host *shost; 742 743 fast_evt_data = container_of(evtp, struct lpfc_fast_path_event, 744 work_evt); 745 746 evt_category = (unsigned long) fast_evt_data->un.fabric_evt.event_type; 747 evt_sub_category = (unsigned long) fast_evt_data->un. 748 fabric_evt.subcategory; 749 shost = lpfc_shost_from_vport(fast_evt_data->vport); 750 if (evt_category == FC_REG_FABRIC_EVENT) { 751 if (evt_sub_category == LPFC_EVENT_FCPRDCHKERR) { 752 evt_data = (char *) &fast_evt_data->un.read_check_error; 753 evt_data_size = sizeof(fast_evt_data->un. 754 read_check_error); 755 } else if ((evt_sub_category == LPFC_EVENT_FABRIC_BUSY) || 756 (evt_sub_category == LPFC_EVENT_PORT_BUSY)) { 757 evt_data = (char *) &fast_evt_data->un.fabric_evt; 758 evt_data_size = sizeof(fast_evt_data->un.fabric_evt); 759 } else { 760 lpfc_free_fast_evt(phba, fast_evt_data); 761 return; 762 } 763 } else if (evt_category == FC_REG_SCSI_EVENT) { 764 switch (evt_sub_category) { 765 case LPFC_EVENT_QFULL: 766 case LPFC_EVENT_DEVBSY: 767 evt_data = (char *) &fast_evt_data->un.scsi_evt; 768 evt_data_size = sizeof(fast_evt_data->un.scsi_evt); 769 break; 770 case LPFC_EVENT_CHECK_COND: 771 evt_data = (char *) &fast_evt_data->un.check_cond_evt; 772 evt_data_size = sizeof(fast_evt_data->un. 773 check_cond_evt); 774 break; 775 case LPFC_EVENT_VARQUEDEPTH: 776 evt_data = (char *) &fast_evt_data->un.queue_depth_evt; 777 evt_data_size = sizeof(fast_evt_data->un. 778 queue_depth_evt); 779 break; 780 default: 781 lpfc_free_fast_evt(phba, fast_evt_data); 782 return; 783 } 784 } else { 785 lpfc_free_fast_evt(phba, fast_evt_data); 786 return; 787 } 788 789 if (phba->cfg_enable_fc4_type != LPFC_ENABLE_NVME) 790 fc_host_post_vendor_event(shost, 791 fc_get_event_number(), 792 evt_data_size, 793 evt_data, 794 LPFC_NL_VENDOR_ID); 795 796 lpfc_free_fast_evt(phba, fast_evt_data); 797 return; 798 } 799 800 static void 801 lpfc_work_list_done(struct lpfc_hba *phba) 802 { 803 struct lpfc_work_evt *evtp = NULL; 804 struct lpfc_nodelist *ndlp; 805 int free_evt; 806 int fcf_inuse; 807 uint32_t nlp_did; 808 bool hba_pci_err; 809 810 spin_lock_irq(&phba->hbalock); 811 while (!list_empty(&phba->work_list)) { 812 list_remove_head((&phba->work_list), evtp, typeof(*evtp), 813 evt_listp); 814 spin_unlock_irq(&phba->hbalock); 815 hba_pci_err = test_bit(HBA_PCI_ERR, &phba->bit_flags); 816 free_evt = 1; 817 switch (evtp->evt) { 818 case LPFC_EVT_ELS_RETRY: 819 ndlp = (struct lpfc_nodelist *) (evtp->evt_arg1); 820 if (!hba_pci_err) { 821 lpfc_els_retry_delay_handler(ndlp); 822 free_evt = 0; /* evt is part of ndlp */ 823 } 824 /* decrement the node reference count held 825 * for this queued work 826 */ 827 lpfc_nlp_put(ndlp); 828 break; 829 case LPFC_EVT_DEV_LOSS: 830 ndlp = (struct lpfc_nodelist *)(evtp->evt_arg1); 831 fcf_inuse = lpfc_dev_loss_tmo_handler(ndlp); 832 free_evt = 0; 833 /* decrement the node reference count held for 834 * this queued work 835 */ 836 nlp_did = ndlp->nlp_DID; 837 lpfc_nlp_put(ndlp); 838 if (phba->sli_rev == LPFC_SLI_REV4) 839 lpfc_sli4_post_dev_loss_tmo_handler(phba, 840 fcf_inuse, 841 nlp_did); 842 break; 843 case LPFC_EVT_RECOVER_PORT: 844 ndlp = (struct lpfc_nodelist *)(evtp->evt_arg1); 845 if (!hba_pci_err) { 846 lpfc_sli_abts_recover_port(ndlp->vport, ndlp); 847 free_evt = 0; 848 } 849 /* decrement the node reference count held for 850 * this queued work 851 */ 852 lpfc_nlp_put(ndlp); 853 break; 854 case LPFC_EVT_ONLINE: 855 if (phba->link_state < LPFC_LINK_DOWN) 856 *(int *) (evtp->evt_arg1) = lpfc_online(phba); 857 else 858 *(int *) (evtp->evt_arg1) = 0; 859 complete((struct completion *)(evtp->evt_arg2)); 860 break; 861 case LPFC_EVT_OFFLINE_PREP: 862 if (phba->link_state >= LPFC_LINK_DOWN) 863 lpfc_offline_prep(phba, LPFC_MBX_WAIT); 864 *(int *)(evtp->evt_arg1) = 0; 865 complete((struct completion *)(evtp->evt_arg2)); 866 break; 867 case LPFC_EVT_OFFLINE: 868 lpfc_offline(phba); 869 lpfc_sli_brdrestart(phba); 870 *(int *)(evtp->evt_arg1) = 871 lpfc_sli_brdready(phba, HS_FFRDY | HS_MBRDY); 872 lpfc_unblock_mgmt_io(phba); 873 complete((struct completion *)(evtp->evt_arg2)); 874 break; 875 case LPFC_EVT_WARM_START: 876 lpfc_offline(phba); 877 lpfc_reset_barrier(phba); 878 lpfc_sli_brdreset(phba); 879 lpfc_hba_down_post(phba); 880 *(int *)(evtp->evt_arg1) = 881 lpfc_sli_brdready(phba, HS_MBRDY); 882 lpfc_unblock_mgmt_io(phba); 883 complete((struct completion *)(evtp->evt_arg2)); 884 break; 885 case LPFC_EVT_KILL: 886 lpfc_offline(phba); 887 *(int *)(evtp->evt_arg1) 888 = (phba->pport->stopped) 889 ? 0 : lpfc_sli_brdkill(phba); 890 lpfc_unblock_mgmt_io(phba); 891 complete((struct completion *)(evtp->evt_arg2)); 892 break; 893 case LPFC_EVT_FASTPATH_MGMT_EVT: 894 lpfc_send_fastpath_evt(phba, evtp); 895 free_evt = 0; 896 break; 897 case LPFC_EVT_RESET_HBA: 898 if (!(phba->pport->load_flag & FC_UNLOADING)) 899 lpfc_reset_hba(phba); 900 break; 901 } 902 if (free_evt) 903 kfree(evtp); 904 spin_lock_irq(&phba->hbalock); 905 } 906 spin_unlock_irq(&phba->hbalock); 907 908 } 909 910 static void 911 lpfc_work_done(struct lpfc_hba *phba) 912 { 913 struct lpfc_sli_ring *pring; 914 uint32_t ha_copy, status, control, work_port_events; 915 struct lpfc_vport **vports; 916 struct lpfc_vport *vport; 917 int i; 918 bool hba_pci_err; 919 920 hba_pci_err = test_bit(HBA_PCI_ERR, &phba->bit_flags); 921 spin_lock_irq(&phba->hbalock); 922 ha_copy = phba->work_ha; 923 phba->work_ha = 0; 924 spin_unlock_irq(&phba->hbalock); 925 if (hba_pci_err) 926 ha_copy = 0; 927 928 /* First, try to post the next mailbox command to SLI4 device */ 929 if (phba->pci_dev_grp == LPFC_PCI_DEV_OC && !hba_pci_err) 930 lpfc_sli4_post_async_mbox(phba); 931 932 if (ha_copy & HA_ERATT) { 933 /* Handle the error attention event */ 934 lpfc_handle_eratt(phba); 935 936 if (phba->fw_dump_cmpl) { 937 complete(phba->fw_dump_cmpl); 938 phba->fw_dump_cmpl = NULL; 939 } 940 } 941 942 if (ha_copy & HA_MBATT) 943 lpfc_sli_handle_mb_event(phba); 944 945 if (ha_copy & HA_LATT) 946 lpfc_handle_latt(phba); 947 948 /* Handle VMID Events */ 949 if (lpfc_is_vmid_enabled(phba) && !hba_pci_err) { 950 if (phba->pport->work_port_events & 951 WORKER_CHECK_VMID_ISSUE_QFPA) { 952 lpfc_check_vmid_qfpa_issue(phba); 953 phba->pport->work_port_events &= 954 ~WORKER_CHECK_VMID_ISSUE_QFPA; 955 } 956 if (phba->pport->work_port_events & 957 WORKER_CHECK_INACTIVE_VMID) { 958 lpfc_check_inactive_vmid(phba); 959 phba->pport->work_port_events &= 960 ~WORKER_CHECK_INACTIVE_VMID; 961 } 962 } 963 964 /* Process SLI4 events */ 965 if (phba->pci_dev_grp == LPFC_PCI_DEV_OC) { 966 if (phba->hba_flag & HBA_RRQ_ACTIVE) 967 lpfc_handle_rrq_active(phba); 968 if (phba->hba_flag & ELS_XRI_ABORT_EVENT) 969 lpfc_sli4_els_xri_abort_event_proc(phba); 970 if (phba->hba_flag & ASYNC_EVENT) 971 lpfc_sli4_async_event_proc(phba); 972 if (phba->hba_flag & HBA_POST_RECEIVE_BUFFER) { 973 spin_lock_irq(&phba->hbalock); 974 phba->hba_flag &= ~HBA_POST_RECEIVE_BUFFER; 975 spin_unlock_irq(&phba->hbalock); 976 lpfc_sli_hbqbuf_add_hbqs(phba, LPFC_ELS_HBQ); 977 } 978 if (phba->fcf.fcf_flag & FCF_REDISC_EVT) 979 lpfc_sli4_fcf_redisc_event_proc(phba); 980 } 981 982 vports = lpfc_create_vport_work_array(phba); 983 if (vports != NULL) 984 for (i = 0; i <= phba->max_vports; i++) { 985 /* 986 * We could have no vports in array if unloading, so if 987 * this happens then just use the pport 988 */ 989 if (vports[i] == NULL && i == 0) 990 vport = phba->pport; 991 else 992 vport = vports[i]; 993 if (vport == NULL) 994 break; 995 spin_lock_irq(&vport->work_port_lock); 996 work_port_events = vport->work_port_events; 997 vport->work_port_events &= ~work_port_events; 998 spin_unlock_irq(&vport->work_port_lock); 999 if (hba_pci_err) 1000 continue; 1001 if (work_port_events & WORKER_DISC_TMO) 1002 lpfc_disc_timeout_handler(vport); 1003 if (work_port_events & WORKER_ELS_TMO) 1004 lpfc_els_timeout_handler(vport); 1005 if (work_port_events & WORKER_HB_TMO) 1006 lpfc_hb_timeout_handler(phba); 1007 if (work_port_events & WORKER_MBOX_TMO) 1008 lpfc_mbox_timeout_handler(phba); 1009 if (work_port_events & WORKER_FABRIC_BLOCK_TMO) 1010 lpfc_unblock_fabric_iocbs(phba); 1011 if (work_port_events & WORKER_RAMP_DOWN_QUEUE) 1012 lpfc_ramp_down_queue_handler(phba); 1013 if (work_port_events & WORKER_DELAYED_DISC_TMO) 1014 lpfc_delayed_disc_timeout_handler(vport); 1015 } 1016 lpfc_destroy_vport_work_array(phba, vports); 1017 1018 pring = lpfc_phba_elsring(phba); 1019 status = (ha_copy & (HA_RXMASK << (4*LPFC_ELS_RING))); 1020 status >>= (4*LPFC_ELS_RING); 1021 if (pring && (status & HA_RXMASK || 1022 pring->flag & LPFC_DEFERRED_RING_EVENT || 1023 phba->hba_flag & HBA_SP_QUEUE_EVT)) { 1024 if (pring->flag & LPFC_STOP_IOCB_EVENT) { 1025 pring->flag |= LPFC_DEFERRED_RING_EVENT; 1026 /* Preserve legacy behavior. */ 1027 if (!(phba->hba_flag & HBA_SP_QUEUE_EVT)) 1028 set_bit(LPFC_DATA_READY, &phba->data_flags); 1029 } else { 1030 /* Driver could have abort request completed in queue 1031 * when link goes down. Allow for this transition. 1032 */ 1033 if (phba->link_state >= LPFC_LINK_DOWN || 1034 phba->link_flag & LS_MDS_LOOPBACK) { 1035 pring->flag &= ~LPFC_DEFERRED_RING_EVENT; 1036 lpfc_sli_handle_slow_ring_event(phba, pring, 1037 (status & 1038 HA_RXMASK)); 1039 } 1040 } 1041 if (phba->sli_rev == LPFC_SLI_REV4) 1042 lpfc_drain_txq(phba); 1043 /* 1044 * Turn on Ring interrupts 1045 */ 1046 if (phba->sli_rev <= LPFC_SLI_REV3) { 1047 spin_lock_irq(&phba->hbalock); 1048 control = readl(phba->HCregaddr); 1049 if (!(control & (HC_R0INT_ENA << LPFC_ELS_RING))) { 1050 lpfc_debugfs_slow_ring_trc(phba, 1051 "WRK Enable ring: cntl:x%x hacopy:x%x", 1052 control, ha_copy, 0); 1053 1054 control |= (HC_R0INT_ENA << LPFC_ELS_RING); 1055 writel(control, phba->HCregaddr); 1056 readl(phba->HCregaddr); /* flush */ 1057 } else { 1058 lpfc_debugfs_slow_ring_trc(phba, 1059 "WRK Ring ok: cntl:x%x hacopy:x%x", 1060 control, ha_copy, 0); 1061 } 1062 spin_unlock_irq(&phba->hbalock); 1063 } 1064 } 1065 lpfc_work_list_done(phba); 1066 } 1067 1068 int 1069 lpfc_do_work(void *p) 1070 { 1071 struct lpfc_hba *phba = p; 1072 int rc; 1073 1074 set_user_nice(current, MIN_NICE); 1075 current->flags |= PF_NOFREEZE; 1076 phba->data_flags = 0; 1077 1078 while (!kthread_should_stop()) { 1079 /* wait and check worker queue activities */ 1080 rc = wait_event_interruptible(phba->work_waitq, 1081 (test_and_clear_bit(LPFC_DATA_READY, 1082 &phba->data_flags) 1083 || kthread_should_stop())); 1084 /* Signal wakeup shall terminate the worker thread */ 1085 if (rc) { 1086 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 1087 "0433 Wakeup on signal: rc=x%x\n", rc); 1088 break; 1089 } 1090 1091 /* Attend pending lpfc data processing */ 1092 lpfc_work_done(phba); 1093 } 1094 phba->worker_thread = NULL; 1095 lpfc_printf_log(phba, KERN_INFO, LOG_ELS, 1096 "0432 Worker thread stopped.\n"); 1097 return 0; 1098 } 1099 1100 /* 1101 * This is only called to handle FC worker events. Since this a rare 1102 * occurrence, we allocate a struct lpfc_work_evt structure here instead of 1103 * embedding it in the IOCB. 1104 */ 1105 int 1106 lpfc_workq_post_event(struct lpfc_hba *phba, void *arg1, void *arg2, 1107 uint32_t evt) 1108 { 1109 struct lpfc_work_evt *evtp; 1110 unsigned long flags; 1111 1112 /* 1113 * All Mailbox completions and LPFC_ELS_RING rcv ring IOCB events will 1114 * be queued to worker thread for processing 1115 */ 1116 evtp = kmalloc(sizeof(struct lpfc_work_evt), GFP_ATOMIC); 1117 if (!evtp) 1118 return 0; 1119 1120 evtp->evt_arg1 = arg1; 1121 evtp->evt_arg2 = arg2; 1122 evtp->evt = evt; 1123 1124 spin_lock_irqsave(&phba->hbalock, flags); 1125 list_add_tail(&evtp->evt_listp, &phba->work_list); 1126 spin_unlock_irqrestore(&phba->hbalock, flags); 1127 1128 lpfc_worker_wake_up(phba); 1129 1130 return 1; 1131 } 1132 1133 void 1134 lpfc_cleanup_rpis(struct lpfc_vport *vport, int remove) 1135 { 1136 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 1137 struct lpfc_hba *phba = vport->phba; 1138 struct lpfc_nodelist *ndlp, *next_ndlp; 1139 1140 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) { 1141 if ((phba->sli3_options & LPFC_SLI3_VPORT_TEARDOWN) || 1142 ((vport->port_type == LPFC_NPIV_PORT) && 1143 ((ndlp->nlp_DID == NameServer_DID) || 1144 (ndlp->nlp_DID == FDMI_DID) || 1145 (ndlp->nlp_DID == Fabric_Cntl_DID)))) 1146 lpfc_unreg_rpi(vport, ndlp); 1147 1148 /* Leave Fabric nodes alone on link down */ 1149 if ((phba->sli_rev < LPFC_SLI_REV4) && 1150 (!remove && ndlp->nlp_type & NLP_FABRIC)) 1151 continue; 1152 1153 /* Notify transport of connectivity loss to trigger cleanup. */ 1154 if (phba->nvmet_support && 1155 ndlp->nlp_state == NLP_STE_UNMAPPED_NODE) 1156 lpfc_nvmet_invalidate_host(phba, ndlp); 1157 1158 lpfc_disc_state_machine(vport, ndlp, NULL, 1159 remove 1160 ? NLP_EVT_DEVICE_RM 1161 : NLP_EVT_DEVICE_RECOVERY); 1162 } 1163 if (phba->sli3_options & LPFC_SLI3_VPORT_TEARDOWN) { 1164 if (phba->sli_rev == LPFC_SLI_REV4) 1165 lpfc_sli4_unreg_all_rpis(vport); 1166 lpfc_mbx_unreg_vpi(vport); 1167 spin_lock_irq(shost->host_lock); 1168 vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI; 1169 spin_unlock_irq(shost->host_lock); 1170 } 1171 } 1172 1173 void 1174 lpfc_port_link_failure(struct lpfc_vport *vport) 1175 { 1176 lpfc_vport_set_state(vport, FC_VPORT_LINKDOWN); 1177 1178 /* Cleanup any outstanding received buffers */ 1179 lpfc_cleanup_rcv_buffers(vport); 1180 1181 /* Cleanup any outstanding RSCN activity */ 1182 lpfc_els_flush_rscn(vport); 1183 1184 /* Cleanup any outstanding ELS commands */ 1185 lpfc_els_flush_cmd(vport); 1186 1187 lpfc_cleanup_rpis(vport, 0); 1188 1189 /* Turn off discovery timer if its running */ 1190 lpfc_can_disctmo(vport); 1191 } 1192 1193 void 1194 lpfc_linkdown_port(struct lpfc_vport *vport) 1195 { 1196 struct lpfc_hba *phba = vport->phba; 1197 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 1198 1199 if (vport->cfg_enable_fc4_type != LPFC_ENABLE_NVME) 1200 fc_host_post_event(shost, fc_get_event_number(), 1201 FCH_EVT_LINKDOWN, 0); 1202 1203 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, 1204 "Link Down: state:x%x rtry:x%x flg:x%x", 1205 vport->port_state, vport->fc_ns_retry, vport->fc_flag); 1206 1207 lpfc_port_link_failure(vport); 1208 1209 /* Stop delayed Nport discovery */ 1210 spin_lock_irq(shost->host_lock); 1211 vport->fc_flag &= ~FC_DISC_DELAYED; 1212 spin_unlock_irq(shost->host_lock); 1213 del_timer_sync(&vport->delayed_disc_tmo); 1214 1215 if (phba->sli_rev == LPFC_SLI_REV4 && 1216 vport->port_type == LPFC_PHYSICAL_PORT && 1217 phba->sli4_hba.fawwpn_flag & LPFC_FAWWPN_CONFIG) { 1218 /* Assume success on link up */ 1219 phba->sli4_hba.fawwpn_flag |= LPFC_FAWWPN_FABRIC; 1220 } 1221 } 1222 1223 int 1224 lpfc_linkdown(struct lpfc_hba *phba) 1225 { 1226 struct lpfc_vport *vport = phba->pport; 1227 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 1228 struct lpfc_vport **vports; 1229 LPFC_MBOXQ_t *mb; 1230 int i; 1231 int offline; 1232 1233 if (phba->link_state == LPFC_LINK_DOWN) 1234 return 0; 1235 1236 /* Block all SCSI stack I/Os */ 1237 lpfc_scsi_dev_block(phba); 1238 offline = pci_channel_offline(phba->pcidev); 1239 1240 phba->defer_flogi_acc_flag = false; 1241 1242 /* Clear external loopback plug detected flag */ 1243 phba->link_flag &= ~LS_EXTERNAL_LOOPBACK; 1244 1245 spin_lock_irq(&phba->hbalock); 1246 phba->fcf.fcf_flag &= ~(FCF_AVAILABLE | FCF_SCAN_DONE); 1247 spin_unlock_irq(&phba->hbalock); 1248 if (phba->link_state > LPFC_LINK_DOWN) { 1249 phba->link_state = LPFC_LINK_DOWN; 1250 if (phba->sli4_hba.conf_trunk) { 1251 phba->trunk_link.link0.state = 0; 1252 phba->trunk_link.link1.state = 0; 1253 phba->trunk_link.link2.state = 0; 1254 phba->trunk_link.link3.state = 0; 1255 phba->trunk_link.phy_lnk_speed = 1256 LPFC_LINK_SPEED_UNKNOWN; 1257 phba->sli4_hba.link_state.logical_speed = 1258 LPFC_LINK_SPEED_UNKNOWN; 1259 } 1260 spin_lock_irq(shost->host_lock); 1261 phba->pport->fc_flag &= ~FC_LBIT; 1262 spin_unlock_irq(shost->host_lock); 1263 } 1264 vports = lpfc_create_vport_work_array(phba); 1265 if (vports != NULL) { 1266 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) { 1267 /* Issue a LINK DOWN event to all nodes */ 1268 lpfc_linkdown_port(vports[i]); 1269 1270 vports[i]->fc_myDID = 0; 1271 1272 if ((vport->cfg_enable_fc4_type == LPFC_ENABLE_BOTH) || 1273 (vport->cfg_enable_fc4_type == LPFC_ENABLE_NVME)) { 1274 if (phba->nvmet_support) 1275 lpfc_nvmet_update_targetport(phba); 1276 else 1277 lpfc_nvme_update_localport(vports[i]); 1278 } 1279 } 1280 } 1281 lpfc_destroy_vport_work_array(phba, vports); 1282 1283 /* Clean up any SLI3 firmware default rpi's */ 1284 if (phba->sli_rev > LPFC_SLI_REV3 || offline) 1285 goto skip_unreg_did; 1286 1287 mb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 1288 if (mb) { 1289 lpfc_unreg_did(phba, 0xffff, LPFC_UNREG_ALL_DFLT_RPIS, mb); 1290 mb->vport = vport; 1291 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl; 1292 if (lpfc_sli_issue_mbox(phba, mb, MBX_NOWAIT) 1293 == MBX_NOT_FINISHED) { 1294 mempool_free(mb, phba->mbox_mem_pool); 1295 } 1296 } 1297 1298 skip_unreg_did: 1299 /* Setup myDID for link up if we are in pt2pt mode */ 1300 if (phba->pport->fc_flag & FC_PT2PT) { 1301 mb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 1302 if (mb) { 1303 lpfc_config_link(phba, mb); 1304 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl; 1305 mb->vport = vport; 1306 if (lpfc_sli_issue_mbox(phba, mb, MBX_NOWAIT) 1307 == MBX_NOT_FINISHED) { 1308 mempool_free(mb, phba->mbox_mem_pool); 1309 } 1310 } 1311 spin_lock_irq(shost->host_lock); 1312 phba->pport->fc_flag &= ~(FC_PT2PT | FC_PT2PT_PLOGI); 1313 phba->pport->rcv_flogi_cnt = 0; 1314 spin_unlock_irq(shost->host_lock); 1315 } 1316 return 0; 1317 } 1318 1319 static void 1320 lpfc_linkup_cleanup_nodes(struct lpfc_vport *vport) 1321 { 1322 struct lpfc_nodelist *ndlp; 1323 1324 list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) { 1325 ndlp->nlp_fc4_type &= ~(NLP_FC4_FCP | NLP_FC4_NVME); 1326 1327 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE) 1328 continue; 1329 if (ndlp->nlp_type & NLP_FABRIC) { 1330 /* On Linkup its safe to clean up the ndlp 1331 * from Fabric connections. 1332 */ 1333 if (ndlp->nlp_DID != Fabric_DID) 1334 lpfc_unreg_rpi(vport, ndlp); 1335 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE); 1336 } else if (!(ndlp->nlp_flag & NLP_NPR_ADISC)) { 1337 /* Fail outstanding IO now since device is 1338 * marked for PLOGI. 1339 */ 1340 lpfc_unreg_rpi(vport, ndlp); 1341 } 1342 } 1343 } 1344 1345 static void 1346 lpfc_linkup_port(struct lpfc_vport *vport) 1347 { 1348 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 1349 struct lpfc_hba *phba = vport->phba; 1350 1351 if ((vport->load_flag & FC_UNLOADING) != 0) 1352 return; 1353 1354 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, 1355 "Link Up: top:x%x speed:x%x flg:x%x", 1356 phba->fc_topology, phba->fc_linkspeed, phba->link_flag); 1357 1358 /* If NPIV is not enabled, only bring the physical port up */ 1359 if (!(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) && 1360 (vport != phba->pport)) 1361 return; 1362 1363 if (vport->cfg_enable_fc4_type != LPFC_ENABLE_NVME) 1364 fc_host_post_event(shost, fc_get_event_number(), 1365 FCH_EVT_LINKUP, 0); 1366 1367 spin_lock_irq(shost->host_lock); 1368 if (phba->defer_flogi_acc_flag) 1369 vport->fc_flag &= ~(FC_ABORT_DISCOVERY | FC_RSCN_MODE | 1370 FC_NLP_MORE | FC_RSCN_DISCOVERY); 1371 else 1372 vport->fc_flag &= ~(FC_PT2PT | FC_PT2PT_PLOGI | 1373 FC_ABORT_DISCOVERY | FC_RSCN_MODE | 1374 FC_NLP_MORE | FC_RSCN_DISCOVERY); 1375 vport->fc_flag |= FC_NDISC_ACTIVE; 1376 vport->fc_ns_retry = 0; 1377 spin_unlock_irq(shost->host_lock); 1378 lpfc_setup_fdmi_mask(vport); 1379 1380 lpfc_linkup_cleanup_nodes(vport); 1381 } 1382 1383 static int 1384 lpfc_linkup(struct lpfc_hba *phba) 1385 { 1386 struct lpfc_vport **vports; 1387 int i; 1388 struct Scsi_Host *shost = lpfc_shost_from_vport(phba->pport); 1389 1390 phba->link_state = LPFC_LINK_UP; 1391 1392 /* Unblock fabric iocbs if they are blocked */ 1393 clear_bit(FABRIC_COMANDS_BLOCKED, &phba->bit_flags); 1394 del_timer_sync(&phba->fabric_block_timer); 1395 1396 vports = lpfc_create_vport_work_array(phba); 1397 if (vports != NULL) 1398 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) 1399 lpfc_linkup_port(vports[i]); 1400 lpfc_destroy_vport_work_array(phba, vports); 1401 1402 /* Clear the pport flogi counter in case the link down was 1403 * absorbed without an ACQE. No lock here - in worker thread 1404 * and discovery is synchronized. 1405 */ 1406 spin_lock_irq(shost->host_lock); 1407 phba->pport->rcv_flogi_cnt = 0; 1408 spin_unlock_irq(shost->host_lock); 1409 1410 /* reinitialize initial HBA flag */ 1411 phba->hba_flag &= ~(HBA_FLOGI_ISSUED | HBA_RHBA_CMPL); 1412 1413 return 0; 1414 } 1415 1416 /* 1417 * This routine handles processing a CLEAR_LA mailbox 1418 * command upon completion. It is setup in the LPFC_MBOXQ 1419 * as the completion routine when the command is 1420 * handed off to the SLI layer. SLI3 only. 1421 */ 1422 static void 1423 lpfc_mbx_cmpl_clear_la(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 1424 { 1425 struct lpfc_vport *vport = pmb->vport; 1426 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 1427 struct lpfc_sli *psli = &phba->sli; 1428 MAILBOX_t *mb = &pmb->u.mb; 1429 uint32_t control; 1430 1431 /* Since we don't do discovery right now, turn these off here */ 1432 psli->sli3_ring[LPFC_EXTRA_RING].flag &= ~LPFC_STOP_IOCB_EVENT; 1433 psli->sli3_ring[LPFC_FCP_RING].flag &= ~LPFC_STOP_IOCB_EVENT; 1434 1435 /* Check for error */ 1436 if ((mb->mbxStatus) && (mb->mbxStatus != 0x1601)) { 1437 /* CLEAR_LA mbox error <mbxStatus> state <hba_state> */ 1438 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 1439 "0320 CLEAR_LA mbxStatus error x%x hba " 1440 "state x%x\n", 1441 mb->mbxStatus, vport->port_state); 1442 phba->link_state = LPFC_HBA_ERROR; 1443 goto out; 1444 } 1445 1446 if (vport->port_type == LPFC_PHYSICAL_PORT) 1447 phba->link_state = LPFC_HBA_READY; 1448 1449 spin_lock_irq(&phba->hbalock); 1450 psli->sli_flag |= LPFC_PROCESS_LA; 1451 control = readl(phba->HCregaddr); 1452 control |= HC_LAINT_ENA; 1453 writel(control, phba->HCregaddr); 1454 readl(phba->HCregaddr); /* flush */ 1455 spin_unlock_irq(&phba->hbalock); 1456 mempool_free(pmb, phba->mbox_mem_pool); 1457 return; 1458 1459 out: 1460 /* Device Discovery completes */ 1461 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, 1462 "0225 Device Discovery completes\n"); 1463 mempool_free(pmb, phba->mbox_mem_pool); 1464 1465 spin_lock_irq(shost->host_lock); 1466 vport->fc_flag &= ~FC_ABORT_DISCOVERY; 1467 spin_unlock_irq(shost->host_lock); 1468 1469 lpfc_can_disctmo(vport); 1470 1471 /* turn on Link Attention interrupts */ 1472 1473 spin_lock_irq(&phba->hbalock); 1474 psli->sli_flag |= LPFC_PROCESS_LA; 1475 control = readl(phba->HCregaddr); 1476 control |= HC_LAINT_ENA; 1477 writel(control, phba->HCregaddr); 1478 readl(phba->HCregaddr); /* flush */ 1479 spin_unlock_irq(&phba->hbalock); 1480 1481 return; 1482 } 1483 1484 void 1485 lpfc_mbx_cmpl_local_config_link(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 1486 { 1487 struct lpfc_vport *vport = pmb->vport; 1488 LPFC_MBOXQ_t *sparam_mb; 1489 u16 status = pmb->u.mb.mbxStatus; 1490 int rc; 1491 1492 mempool_free(pmb, phba->mbox_mem_pool); 1493 1494 if (status) 1495 goto out; 1496 1497 /* don't perform discovery for SLI4 loopback diagnostic test */ 1498 if ((phba->sli_rev == LPFC_SLI_REV4) && 1499 !(phba->hba_flag & HBA_FCOE_MODE) && 1500 (phba->link_flag & LS_LOOPBACK_MODE)) 1501 return; 1502 1503 if (phba->fc_topology == LPFC_TOPOLOGY_LOOP && 1504 vport->fc_flag & FC_PUBLIC_LOOP && 1505 !(vport->fc_flag & FC_LBIT)) { 1506 /* Need to wait for FAN - use discovery timer 1507 * for timeout. port_state is identically 1508 * LPFC_LOCAL_CFG_LINK while waiting for FAN 1509 */ 1510 lpfc_set_disctmo(vport); 1511 return; 1512 } 1513 1514 /* Start discovery by sending a FLOGI. port_state is identically 1515 * LPFC_FLOGI while waiting for FLOGI cmpl. 1516 */ 1517 if (vport->port_state != LPFC_FLOGI) { 1518 /* Issue MBX_READ_SPARAM to update CSPs before FLOGI if 1519 * bb-credit recovery is in place. 1520 */ 1521 if (phba->bbcredit_support && phba->cfg_enable_bbcr && 1522 !(phba->link_flag & LS_LOOPBACK_MODE)) { 1523 sparam_mb = mempool_alloc(phba->mbox_mem_pool, 1524 GFP_KERNEL); 1525 if (!sparam_mb) 1526 goto sparam_out; 1527 1528 rc = lpfc_read_sparam(phba, sparam_mb, 0); 1529 if (rc) { 1530 mempool_free(sparam_mb, phba->mbox_mem_pool); 1531 goto sparam_out; 1532 } 1533 sparam_mb->vport = vport; 1534 sparam_mb->mbox_cmpl = lpfc_mbx_cmpl_read_sparam; 1535 rc = lpfc_sli_issue_mbox(phba, sparam_mb, MBX_NOWAIT); 1536 if (rc == MBX_NOT_FINISHED) { 1537 lpfc_mbox_rsrc_cleanup(phba, sparam_mb, 1538 MBOX_THD_UNLOCKED); 1539 goto sparam_out; 1540 } 1541 1542 phba->hba_flag |= HBA_DEFER_FLOGI; 1543 } else { 1544 lpfc_initial_flogi(vport); 1545 } 1546 } else { 1547 if (vport->fc_flag & FC_PT2PT) 1548 lpfc_disc_start(vport); 1549 } 1550 return; 1551 1552 out: 1553 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 1554 "0306 CONFIG_LINK mbxStatus error x%x HBA state x%x\n", 1555 status, vport->port_state); 1556 1557 sparam_out: 1558 lpfc_linkdown(phba); 1559 1560 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 1561 "0200 CONFIG_LINK bad hba state x%x\n", 1562 vport->port_state); 1563 1564 lpfc_issue_clear_la(phba, vport); 1565 return; 1566 } 1567 1568 /** 1569 * lpfc_sli4_clear_fcf_rr_bmask 1570 * @phba: pointer to the struct lpfc_hba for this port. 1571 * This fucnction resets the round robin bit mask and clears the 1572 * fcf priority list. The list deletions are done while holding the 1573 * hbalock. The ON_LIST flag and the FLOGI_FAILED flags are cleared 1574 * from the lpfc_fcf_pri record. 1575 **/ 1576 void 1577 lpfc_sli4_clear_fcf_rr_bmask(struct lpfc_hba *phba) 1578 { 1579 struct lpfc_fcf_pri *fcf_pri; 1580 struct lpfc_fcf_pri *next_fcf_pri; 1581 memset(phba->fcf.fcf_rr_bmask, 0, sizeof(*phba->fcf.fcf_rr_bmask)); 1582 spin_lock_irq(&phba->hbalock); 1583 list_for_each_entry_safe(fcf_pri, next_fcf_pri, 1584 &phba->fcf.fcf_pri_list, list) { 1585 list_del_init(&fcf_pri->list); 1586 fcf_pri->fcf_rec.flag = 0; 1587 } 1588 spin_unlock_irq(&phba->hbalock); 1589 } 1590 static void 1591 lpfc_mbx_cmpl_reg_fcfi(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq) 1592 { 1593 struct lpfc_vport *vport = mboxq->vport; 1594 1595 if (mboxq->u.mb.mbxStatus) { 1596 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 1597 "2017 REG_FCFI mbxStatus error x%x " 1598 "HBA state x%x\n", mboxq->u.mb.mbxStatus, 1599 vport->port_state); 1600 goto fail_out; 1601 } 1602 1603 /* Start FCoE discovery by sending a FLOGI. */ 1604 phba->fcf.fcfi = bf_get(lpfc_reg_fcfi_fcfi, &mboxq->u.mqe.un.reg_fcfi); 1605 /* Set the FCFI registered flag */ 1606 spin_lock_irq(&phba->hbalock); 1607 phba->fcf.fcf_flag |= FCF_REGISTERED; 1608 spin_unlock_irq(&phba->hbalock); 1609 1610 /* If there is a pending FCoE event, restart FCF table scan. */ 1611 if ((!(phba->hba_flag & FCF_RR_INPROG)) && 1612 lpfc_check_pending_fcoe_event(phba, LPFC_UNREG_FCF)) 1613 goto fail_out; 1614 1615 /* Mark successful completion of FCF table scan */ 1616 spin_lock_irq(&phba->hbalock); 1617 phba->fcf.fcf_flag |= (FCF_SCAN_DONE | FCF_IN_USE); 1618 phba->hba_flag &= ~FCF_TS_INPROG; 1619 if (vport->port_state != LPFC_FLOGI) { 1620 phba->hba_flag |= FCF_RR_INPROG; 1621 spin_unlock_irq(&phba->hbalock); 1622 lpfc_issue_init_vfi(vport); 1623 goto out; 1624 } 1625 spin_unlock_irq(&phba->hbalock); 1626 goto out; 1627 1628 fail_out: 1629 spin_lock_irq(&phba->hbalock); 1630 phba->hba_flag &= ~FCF_RR_INPROG; 1631 spin_unlock_irq(&phba->hbalock); 1632 out: 1633 mempool_free(mboxq, phba->mbox_mem_pool); 1634 } 1635 1636 /** 1637 * lpfc_fab_name_match - Check if the fcf fabric name match. 1638 * @fab_name: pointer to fabric name. 1639 * @new_fcf_record: pointer to fcf record. 1640 * 1641 * This routine compare the fcf record's fabric name with provided 1642 * fabric name. If the fabric name are identical this function 1643 * returns 1 else return 0. 1644 **/ 1645 static uint32_t 1646 lpfc_fab_name_match(uint8_t *fab_name, struct fcf_record *new_fcf_record) 1647 { 1648 if (fab_name[0] != bf_get(lpfc_fcf_record_fab_name_0, new_fcf_record)) 1649 return 0; 1650 if (fab_name[1] != bf_get(lpfc_fcf_record_fab_name_1, new_fcf_record)) 1651 return 0; 1652 if (fab_name[2] != bf_get(lpfc_fcf_record_fab_name_2, new_fcf_record)) 1653 return 0; 1654 if (fab_name[3] != bf_get(lpfc_fcf_record_fab_name_3, new_fcf_record)) 1655 return 0; 1656 if (fab_name[4] != bf_get(lpfc_fcf_record_fab_name_4, new_fcf_record)) 1657 return 0; 1658 if (fab_name[5] != bf_get(lpfc_fcf_record_fab_name_5, new_fcf_record)) 1659 return 0; 1660 if (fab_name[6] != bf_get(lpfc_fcf_record_fab_name_6, new_fcf_record)) 1661 return 0; 1662 if (fab_name[7] != bf_get(lpfc_fcf_record_fab_name_7, new_fcf_record)) 1663 return 0; 1664 return 1; 1665 } 1666 1667 /** 1668 * lpfc_sw_name_match - Check if the fcf switch name match. 1669 * @sw_name: pointer to switch name. 1670 * @new_fcf_record: pointer to fcf record. 1671 * 1672 * This routine compare the fcf record's switch name with provided 1673 * switch name. If the switch name are identical this function 1674 * returns 1 else return 0. 1675 **/ 1676 static uint32_t 1677 lpfc_sw_name_match(uint8_t *sw_name, struct fcf_record *new_fcf_record) 1678 { 1679 if (sw_name[0] != bf_get(lpfc_fcf_record_switch_name_0, new_fcf_record)) 1680 return 0; 1681 if (sw_name[1] != bf_get(lpfc_fcf_record_switch_name_1, new_fcf_record)) 1682 return 0; 1683 if (sw_name[2] != bf_get(lpfc_fcf_record_switch_name_2, new_fcf_record)) 1684 return 0; 1685 if (sw_name[3] != bf_get(lpfc_fcf_record_switch_name_3, new_fcf_record)) 1686 return 0; 1687 if (sw_name[4] != bf_get(lpfc_fcf_record_switch_name_4, new_fcf_record)) 1688 return 0; 1689 if (sw_name[5] != bf_get(lpfc_fcf_record_switch_name_5, new_fcf_record)) 1690 return 0; 1691 if (sw_name[6] != bf_get(lpfc_fcf_record_switch_name_6, new_fcf_record)) 1692 return 0; 1693 if (sw_name[7] != bf_get(lpfc_fcf_record_switch_name_7, new_fcf_record)) 1694 return 0; 1695 return 1; 1696 } 1697 1698 /** 1699 * lpfc_mac_addr_match - Check if the fcf mac address match. 1700 * @mac_addr: pointer to mac address. 1701 * @new_fcf_record: pointer to fcf record. 1702 * 1703 * This routine compare the fcf record's mac address with HBA's 1704 * FCF mac address. If the mac addresses are identical this function 1705 * returns 1 else return 0. 1706 **/ 1707 static uint32_t 1708 lpfc_mac_addr_match(uint8_t *mac_addr, struct fcf_record *new_fcf_record) 1709 { 1710 if (mac_addr[0] != bf_get(lpfc_fcf_record_mac_0, new_fcf_record)) 1711 return 0; 1712 if (mac_addr[1] != bf_get(lpfc_fcf_record_mac_1, new_fcf_record)) 1713 return 0; 1714 if (mac_addr[2] != bf_get(lpfc_fcf_record_mac_2, new_fcf_record)) 1715 return 0; 1716 if (mac_addr[3] != bf_get(lpfc_fcf_record_mac_3, new_fcf_record)) 1717 return 0; 1718 if (mac_addr[4] != bf_get(lpfc_fcf_record_mac_4, new_fcf_record)) 1719 return 0; 1720 if (mac_addr[5] != bf_get(lpfc_fcf_record_mac_5, new_fcf_record)) 1721 return 0; 1722 return 1; 1723 } 1724 1725 static bool 1726 lpfc_vlan_id_match(uint16_t curr_vlan_id, uint16_t new_vlan_id) 1727 { 1728 return (curr_vlan_id == new_vlan_id); 1729 } 1730 1731 /** 1732 * __lpfc_update_fcf_record_pri - update the lpfc_fcf_pri record. 1733 * @phba: pointer to lpfc hba data structure. 1734 * @fcf_index: Index for the lpfc_fcf_record. 1735 * @new_fcf_record: pointer to hba fcf record. 1736 * 1737 * This routine updates the driver FCF priority record from the new HBA FCF 1738 * record. The hbalock is asserted held in the code path calling this 1739 * routine. 1740 **/ 1741 static void 1742 __lpfc_update_fcf_record_pri(struct lpfc_hba *phba, uint16_t fcf_index, 1743 struct fcf_record *new_fcf_record 1744 ) 1745 { 1746 struct lpfc_fcf_pri *fcf_pri; 1747 1748 fcf_pri = &phba->fcf.fcf_pri[fcf_index]; 1749 fcf_pri->fcf_rec.fcf_index = fcf_index; 1750 /* FCF record priority */ 1751 fcf_pri->fcf_rec.priority = new_fcf_record->fip_priority; 1752 1753 } 1754 1755 /** 1756 * lpfc_copy_fcf_record - Copy fcf information to lpfc_hba. 1757 * @fcf_rec: pointer to driver fcf record. 1758 * @new_fcf_record: pointer to fcf record. 1759 * 1760 * This routine copies the FCF information from the FCF 1761 * record to lpfc_hba data structure. 1762 **/ 1763 static void 1764 lpfc_copy_fcf_record(struct lpfc_fcf_rec *fcf_rec, 1765 struct fcf_record *new_fcf_record) 1766 { 1767 /* Fabric name */ 1768 fcf_rec->fabric_name[0] = 1769 bf_get(lpfc_fcf_record_fab_name_0, new_fcf_record); 1770 fcf_rec->fabric_name[1] = 1771 bf_get(lpfc_fcf_record_fab_name_1, new_fcf_record); 1772 fcf_rec->fabric_name[2] = 1773 bf_get(lpfc_fcf_record_fab_name_2, new_fcf_record); 1774 fcf_rec->fabric_name[3] = 1775 bf_get(lpfc_fcf_record_fab_name_3, new_fcf_record); 1776 fcf_rec->fabric_name[4] = 1777 bf_get(lpfc_fcf_record_fab_name_4, new_fcf_record); 1778 fcf_rec->fabric_name[5] = 1779 bf_get(lpfc_fcf_record_fab_name_5, new_fcf_record); 1780 fcf_rec->fabric_name[6] = 1781 bf_get(lpfc_fcf_record_fab_name_6, new_fcf_record); 1782 fcf_rec->fabric_name[7] = 1783 bf_get(lpfc_fcf_record_fab_name_7, new_fcf_record); 1784 /* Mac address */ 1785 fcf_rec->mac_addr[0] = bf_get(lpfc_fcf_record_mac_0, new_fcf_record); 1786 fcf_rec->mac_addr[1] = bf_get(lpfc_fcf_record_mac_1, new_fcf_record); 1787 fcf_rec->mac_addr[2] = bf_get(lpfc_fcf_record_mac_2, new_fcf_record); 1788 fcf_rec->mac_addr[3] = bf_get(lpfc_fcf_record_mac_3, new_fcf_record); 1789 fcf_rec->mac_addr[4] = bf_get(lpfc_fcf_record_mac_4, new_fcf_record); 1790 fcf_rec->mac_addr[5] = bf_get(lpfc_fcf_record_mac_5, new_fcf_record); 1791 /* FCF record index */ 1792 fcf_rec->fcf_indx = bf_get(lpfc_fcf_record_fcf_index, new_fcf_record); 1793 /* FCF record priority */ 1794 fcf_rec->priority = new_fcf_record->fip_priority; 1795 /* Switch name */ 1796 fcf_rec->switch_name[0] = 1797 bf_get(lpfc_fcf_record_switch_name_0, new_fcf_record); 1798 fcf_rec->switch_name[1] = 1799 bf_get(lpfc_fcf_record_switch_name_1, new_fcf_record); 1800 fcf_rec->switch_name[2] = 1801 bf_get(lpfc_fcf_record_switch_name_2, new_fcf_record); 1802 fcf_rec->switch_name[3] = 1803 bf_get(lpfc_fcf_record_switch_name_3, new_fcf_record); 1804 fcf_rec->switch_name[4] = 1805 bf_get(lpfc_fcf_record_switch_name_4, new_fcf_record); 1806 fcf_rec->switch_name[5] = 1807 bf_get(lpfc_fcf_record_switch_name_5, new_fcf_record); 1808 fcf_rec->switch_name[6] = 1809 bf_get(lpfc_fcf_record_switch_name_6, new_fcf_record); 1810 fcf_rec->switch_name[7] = 1811 bf_get(lpfc_fcf_record_switch_name_7, new_fcf_record); 1812 } 1813 1814 /** 1815 * __lpfc_update_fcf_record - Update driver fcf record 1816 * @phba: pointer to lpfc hba data structure. 1817 * @fcf_rec: pointer to driver fcf record. 1818 * @new_fcf_record: pointer to hba fcf record. 1819 * @addr_mode: address mode to be set to the driver fcf record. 1820 * @vlan_id: vlan tag to be set to the driver fcf record. 1821 * @flag: flag bits to be set to the driver fcf record. 1822 * 1823 * This routine updates the driver FCF record from the new HBA FCF record 1824 * together with the address mode, vlan_id, and other informations. This 1825 * routine is called with the hbalock held. 1826 **/ 1827 static void 1828 __lpfc_update_fcf_record(struct lpfc_hba *phba, struct lpfc_fcf_rec *fcf_rec, 1829 struct fcf_record *new_fcf_record, uint32_t addr_mode, 1830 uint16_t vlan_id, uint32_t flag) 1831 { 1832 lockdep_assert_held(&phba->hbalock); 1833 1834 /* Copy the fields from the HBA's FCF record */ 1835 lpfc_copy_fcf_record(fcf_rec, new_fcf_record); 1836 /* Update other fields of driver FCF record */ 1837 fcf_rec->addr_mode = addr_mode; 1838 fcf_rec->vlan_id = vlan_id; 1839 fcf_rec->flag |= (flag | RECORD_VALID); 1840 __lpfc_update_fcf_record_pri(phba, 1841 bf_get(lpfc_fcf_record_fcf_index, new_fcf_record), 1842 new_fcf_record); 1843 } 1844 1845 /** 1846 * lpfc_register_fcf - Register the FCF with hba. 1847 * @phba: pointer to lpfc hba data structure. 1848 * 1849 * This routine issues a register fcfi mailbox command to register 1850 * the fcf with HBA. 1851 **/ 1852 static void 1853 lpfc_register_fcf(struct lpfc_hba *phba) 1854 { 1855 LPFC_MBOXQ_t *fcf_mbxq; 1856 int rc; 1857 1858 spin_lock_irq(&phba->hbalock); 1859 /* If the FCF is not available do nothing. */ 1860 if (!(phba->fcf.fcf_flag & FCF_AVAILABLE)) { 1861 phba->hba_flag &= ~(FCF_TS_INPROG | FCF_RR_INPROG); 1862 spin_unlock_irq(&phba->hbalock); 1863 return; 1864 } 1865 1866 /* The FCF is already registered, start discovery */ 1867 if (phba->fcf.fcf_flag & FCF_REGISTERED) { 1868 phba->fcf.fcf_flag |= (FCF_SCAN_DONE | FCF_IN_USE); 1869 phba->hba_flag &= ~FCF_TS_INPROG; 1870 if (phba->pport->port_state != LPFC_FLOGI && 1871 phba->pport->fc_flag & FC_FABRIC) { 1872 phba->hba_flag |= FCF_RR_INPROG; 1873 spin_unlock_irq(&phba->hbalock); 1874 lpfc_initial_flogi(phba->pport); 1875 return; 1876 } 1877 spin_unlock_irq(&phba->hbalock); 1878 return; 1879 } 1880 spin_unlock_irq(&phba->hbalock); 1881 1882 fcf_mbxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 1883 if (!fcf_mbxq) { 1884 spin_lock_irq(&phba->hbalock); 1885 phba->hba_flag &= ~(FCF_TS_INPROG | FCF_RR_INPROG); 1886 spin_unlock_irq(&phba->hbalock); 1887 return; 1888 } 1889 1890 lpfc_reg_fcfi(phba, fcf_mbxq); 1891 fcf_mbxq->vport = phba->pport; 1892 fcf_mbxq->mbox_cmpl = lpfc_mbx_cmpl_reg_fcfi; 1893 rc = lpfc_sli_issue_mbox(phba, fcf_mbxq, MBX_NOWAIT); 1894 if (rc == MBX_NOT_FINISHED) { 1895 spin_lock_irq(&phba->hbalock); 1896 phba->hba_flag &= ~(FCF_TS_INPROG | FCF_RR_INPROG); 1897 spin_unlock_irq(&phba->hbalock); 1898 mempool_free(fcf_mbxq, phba->mbox_mem_pool); 1899 } 1900 1901 return; 1902 } 1903 1904 /** 1905 * lpfc_match_fcf_conn_list - Check if the FCF record can be used for discovery. 1906 * @phba: pointer to lpfc hba data structure. 1907 * @new_fcf_record: pointer to fcf record. 1908 * @boot_flag: Indicates if this record used by boot bios. 1909 * @addr_mode: The address mode to be used by this FCF 1910 * @vlan_id: The vlan id to be used as vlan tagging by this FCF. 1911 * 1912 * This routine compare the fcf record with connect list obtained from the 1913 * config region to decide if this FCF can be used for SAN discovery. It returns 1914 * 1 if this record can be used for SAN discovery else return zero. If this FCF 1915 * record can be used for SAN discovery, the boot_flag will indicate if this FCF 1916 * is used by boot bios and addr_mode will indicate the addressing mode to be 1917 * used for this FCF when the function returns. 1918 * If the FCF record need to be used with a particular vlan id, the vlan is 1919 * set in the vlan_id on return of the function. If not VLAN tagging need to 1920 * be used with the FCF vlan_id will be set to LPFC_FCOE_NULL_VID; 1921 **/ 1922 static int 1923 lpfc_match_fcf_conn_list(struct lpfc_hba *phba, 1924 struct fcf_record *new_fcf_record, 1925 uint32_t *boot_flag, uint32_t *addr_mode, 1926 uint16_t *vlan_id) 1927 { 1928 struct lpfc_fcf_conn_entry *conn_entry; 1929 int i, j, fcf_vlan_id = 0; 1930 1931 /* Find the lowest VLAN id in the FCF record */ 1932 for (i = 0; i < 512; i++) { 1933 if (new_fcf_record->vlan_bitmap[i]) { 1934 fcf_vlan_id = i * 8; 1935 j = 0; 1936 while (!((new_fcf_record->vlan_bitmap[i] >> j) & 1)) { 1937 j++; 1938 fcf_vlan_id++; 1939 } 1940 break; 1941 } 1942 } 1943 1944 /* FCF not valid/available or solicitation in progress */ 1945 if (!bf_get(lpfc_fcf_record_fcf_avail, new_fcf_record) || 1946 !bf_get(lpfc_fcf_record_fcf_valid, new_fcf_record) || 1947 bf_get(lpfc_fcf_record_fcf_sol, new_fcf_record)) 1948 return 0; 1949 1950 if (!(phba->hba_flag & HBA_FIP_SUPPORT)) { 1951 *boot_flag = 0; 1952 *addr_mode = bf_get(lpfc_fcf_record_mac_addr_prov, 1953 new_fcf_record); 1954 if (phba->valid_vlan) 1955 *vlan_id = phba->vlan_id; 1956 else 1957 *vlan_id = LPFC_FCOE_NULL_VID; 1958 return 1; 1959 } 1960 1961 /* 1962 * If there are no FCF connection table entry, driver connect to all 1963 * FCFs. 1964 */ 1965 if (list_empty(&phba->fcf_conn_rec_list)) { 1966 *boot_flag = 0; 1967 *addr_mode = bf_get(lpfc_fcf_record_mac_addr_prov, 1968 new_fcf_record); 1969 1970 /* 1971 * When there are no FCF connect entries, use driver's default 1972 * addressing mode - FPMA. 1973 */ 1974 if (*addr_mode & LPFC_FCF_FPMA) 1975 *addr_mode = LPFC_FCF_FPMA; 1976 1977 /* If FCF record report a vlan id use that vlan id */ 1978 if (fcf_vlan_id) 1979 *vlan_id = fcf_vlan_id; 1980 else 1981 *vlan_id = LPFC_FCOE_NULL_VID; 1982 return 1; 1983 } 1984 1985 list_for_each_entry(conn_entry, 1986 &phba->fcf_conn_rec_list, list) { 1987 if (!(conn_entry->conn_rec.flags & FCFCNCT_VALID)) 1988 continue; 1989 1990 if ((conn_entry->conn_rec.flags & FCFCNCT_FBNM_VALID) && 1991 !lpfc_fab_name_match(conn_entry->conn_rec.fabric_name, 1992 new_fcf_record)) 1993 continue; 1994 if ((conn_entry->conn_rec.flags & FCFCNCT_SWNM_VALID) && 1995 !lpfc_sw_name_match(conn_entry->conn_rec.switch_name, 1996 new_fcf_record)) 1997 continue; 1998 if (conn_entry->conn_rec.flags & FCFCNCT_VLAN_VALID) { 1999 /* 2000 * If the vlan bit map does not have the bit set for the 2001 * vlan id to be used, then it is not a match. 2002 */ 2003 if (!(new_fcf_record->vlan_bitmap 2004 [conn_entry->conn_rec.vlan_tag / 8] & 2005 (1 << (conn_entry->conn_rec.vlan_tag % 8)))) 2006 continue; 2007 } 2008 2009 /* 2010 * If connection record does not support any addressing mode, 2011 * skip the FCF record. 2012 */ 2013 if (!(bf_get(lpfc_fcf_record_mac_addr_prov, new_fcf_record) 2014 & (LPFC_FCF_FPMA | LPFC_FCF_SPMA))) 2015 continue; 2016 2017 /* 2018 * Check if the connection record specifies a required 2019 * addressing mode. 2020 */ 2021 if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) && 2022 !(conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED)) { 2023 2024 /* 2025 * If SPMA required but FCF not support this continue. 2026 */ 2027 if ((conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) && 2028 !(bf_get(lpfc_fcf_record_mac_addr_prov, 2029 new_fcf_record) & LPFC_FCF_SPMA)) 2030 continue; 2031 2032 /* 2033 * If FPMA required but FCF not support this continue. 2034 */ 2035 if (!(conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) && 2036 !(bf_get(lpfc_fcf_record_mac_addr_prov, 2037 new_fcf_record) & LPFC_FCF_FPMA)) 2038 continue; 2039 } 2040 2041 /* 2042 * This fcf record matches filtering criteria. 2043 */ 2044 if (conn_entry->conn_rec.flags & FCFCNCT_BOOT) 2045 *boot_flag = 1; 2046 else 2047 *boot_flag = 0; 2048 2049 /* 2050 * If user did not specify any addressing mode, or if the 2051 * preferred addressing mode specified by user is not supported 2052 * by FCF, allow fabric to pick the addressing mode. 2053 */ 2054 *addr_mode = bf_get(lpfc_fcf_record_mac_addr_prov, 2055 new_fcf_record); 2056 /* 2057 * If the user specified a required address mode, assign that 2058 * address mode 2059 */ 2060 if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) && 2061 (!(conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED))) 2062 *addr_mode = (conn_entry->conn_rec.flags & 2063 FCFCNCT_AM_SPMA) ? 2064 LPFC_FCF_SPMA : LPFC_FCF_FPMA; 2065 /* 2066 * If the user specified a preferred address mode, use the 2067 * addr mode only if FCF support the addr_mode. 2068 */ 2069 else if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) && 2070 (conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED) && 2071 (conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) && 2072 (*addr_mode & LPFC_FCF_SPMA)) 2073 *addr_mode = LPFC_FCF_SPMA; 2074 else if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) && 2075 (conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED) && 2076 !(conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) && 2077 (*addr_mode & LPFC_FCF_FPMA)) 2078 *addr_mode = LPFC_FCF_FPMA; 2079 2080 /* If matching connect list has a vlan id, use it */ 2081 if (conn_entry->conn_rec.flags & FCFCNCT_VLAN_VALID) 2082 *vlan_id = conn_entry->conn_rec.vlan_tag; 2083 /* 2084 * If no vlan id is specified in connect list, use the vlan id 2085 * in the FCF record 2086 */ 2087 else if (fcf_vlan_id) 2088 *vlan_id = fcf_vlan_id; 2089 else 2090 *vlan_id = LPFC_FCOE_NULL_VID; 2091 2092 return 1; 2093 } 2094 2095 return 0; 2096 } 2097 2098 /** 2099 * lpfc_check_pending_fcoe_event - Check if there is pending fcoe event. 2100 * @phba: pointer to lpfc hba data structure. 2101 * @unreg_fcf: Unregister FCF if FCF table need to be re-scaned. 2102 * 2103 * This function check if there is any fcoe event pending while driver 2104 * scan FCF entries. If there is any pending event, it will restart the 2105 * FCF saning and return 1 else return 0. 2106 */ 2107 int 2108 lpfc_check_pending_fcoe_event(struct lpfc_hba *phba, uint8_t unreg_fcf) 2109 { 2110 /* 2111 * If the Link is up and no FCoE events while in the 2112 * FCF discovery, no need to restart FCF discovery. 2113 */ 2114 if ((phba->link_state >= LPFC_LINK_UP) && 2115 (phba->fcoe_eventtag == phba->fcoe_eventtag_at_fcf_scan)) 2116 return 0; 2117 2118 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2119 "2768 Pending link or FCF event during current " 2120 "handling of the previous event: link_state:x%x, " 2121 "evt_tag_at_scan:x%x, evt_tag_current:x%x\n", 2122 phba->link_state, phba->fcoe_eventtag_at_fcf_scan, 2123 phba->fcoe_eventtag); 2124 2125 spin_lock_irq(&phba->hbalock); 2126 phba->fcf.fcf_flag &= ~FCF_AVAILABLE; 2127 spin_unlock_irq(&phba->hbalock); 2128 2129 if (phba->link_state >= LPFC_LINK_UP) { 2130 lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY, 2131 "2780 Restart FCF table scan due to " 2132 "pending FCF event:evt_tag_at_scan:x%x, " 2133 "evt_tag_current:x%x\n", 2134 phba->fcoe_eventtag_at_fcf_scan, 2135 phba->fcoe_eventtag); 2136 lpfc_sli4_fcf_scan_read_fcf_rec(phba, LPFC_FCOE_FCF_GET_FIRST); 2137 } else { 2138 /* 2139 * Do not continue FCF discovery and clear FCF_TS_INPROG 2140 * flag 2141 */ 2142 lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY, 2143 "2833 Stop FCF discovery process due to link " 2144 "state change (x%x)\n", phba->link_state); 2145 spin_lock_irq(&phba->hbalock); 2146 phba->hba_flag &= ~(FCF_TS_INPROG | FCF_RR_INPROG); 2147 phba->fcf.fcf_flag &= ~(FCF_REDISC_FOV | FCF_DISCOVERY); 2148 spin_unlock_irq(&phba->hbalock); 2149 } 2150 2151 /* Unregister the currently registered FCF if required */ 2152 if (unreg_fcf) { 2153 spin_lock_irq(&phba->hbalock); 2154 phba->fcf.fcf_flag &= ~FCF_REGISTERED; 2155 spin_unlock_irq(&phba->hbalock); 2156 lpfc_sli4_unregister_fcf(phba); 2157 } 2158 return 1; 2159 } 2160 2161 /** 2162 * lpfc_sli4_new_fcf_random_select - Randomly select an eligible new fcf record 2163 * @phba: pointer to lpfc hba data structure. 2164 * @fcf_cnt: number of eligible fcf record seen so far. 2165 * 2166 * This function makes an running random selection decision on FCF record to 2167 * use through a sequence of @fcf_cnt eligible FCF records with equal 2168 * probability. To perform integer manunipulation of random numbers with 2169 * size unit32_t, a 16-bit random number returned from get_random_u16() is 2170 * taken as the random random number generated. 2171 * 2172 * Returns true when outcome is for the newly read FCF record should be 2173 * chosen; otherwise, return false when outcome is for keeping the previously 2174 * chosen FCF record. 2175 **/ 2176 static bool 2177 lpfc_sli4_new_fcf_random_select(struct lpfc_hba *phba, uint32_t fcf_cnt) 2178 { 2179 uint32_t rand_num; 2180 2181 /* Get 16-bit uniform random number */ 2182 rand_num = get_random_u16(); 2183 2184 /* Decision with probability 1/fcf_cnt */ 2185 if ((fcf_cnt * rand_num) < 0xFFFF) 2186 return true; 2187 else 2188 return false; 2189 } 2190 2191 /** 2192 * lpfc_sli4_fcf_rec_mbox_parse - Parse read_fcf mbox command. 2193 * @phba: pointer to lpfc hba data structure. 2194 * @mboxq: pointer to mailbox object. 2195 * @next_fcf_index: pointer to holder of next fcf index. 2196 * 2197 * This routine parses the non-embedded fcf mailbox command by performing the 2198 * necessarily error checking, non-embedded read FCF record mailbox command 2199 * SGE parsing, and endianness swapping. 2200 * 2201 * Returns the pointer to the new FCF record in the non-embedded mailbox 2202 * command DMA memory if successfully, other NULL. 2203 */ 2204 static struct fcf_record * 2205 lpfc_sli4_fcf_rec_mbox_parse(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq, 2206 uint16_t *next_fcf_index) 2207 { 2208 void *virt_addr; 2209 struct lpfc_mbx_sge sge; 2210 struct lpfc_mbx_read_fcf_tbl *read_fcf; 2211 uint32_t shdr_status, shdr_add_status, if_type; 2212 union lpfc_sli4_cfg_shdr *shdr; 2213 struct fcf_record *new_fcf_record; 2214 2215 /* Get the first SGE entry from the non-embedded DMA memory. This 2216 * routine only uses a single SGE. 2217 */ 2218 lpfc_sli4_mbx_sge_get(mboxq, 0, &sge); 2219 if (unlikely(!mboxq->sge_array)) { 2220 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 2221 "2524 Failed to get the non-embedded SGE " 2222 "virtual address\n"); 2223 return NULL; 2224 } 2225 virt_addr = mboxq->sge_array->addr[0]; 2226 2227 shdr = (union lpfc_sli4_cfg_shdr *)virt_addr; 2228 lpfc_sli_pcimem_bcopy(shdr, shdr, 2229 sizeof(union lpfc_sli4_cfg_shdr)); 2230 shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response); 2231 if_type = bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf); 2232 shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response); 2233 if (shdr_status || shdr_add_status) { 2234 if (shdr_status == STATUS_FCF_TABLE_EMPTY || 2235 if_type == LPFC_SLI_INTF_IF_TYPE_2) 2236 lpfc_printf_log(phba, KERN_ERR, 2237 LOG_TRACE_EVENT, 2238 "2726 READ_FCF_RECORD Indicates empty " 2239 "FCF table.\n"); 2240 else 2241 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 2242 "2521 READ_FCF_RECORD mailbox failed " 2243 "with status x%x add_status x%x, " 2244 "mbx\n", shdr_status, shdr_add_status); 2245 return NULL; 2246 } 2247 2248 /* Interpreting the returned information of the FCF record */ 2249 read_fcf = (struct lpfc_mbx_read_fcf_tbl *)virt_addr; 2250 lpfc_sli_pcimem_bcopy(read_fcf, read_fcf, 2251 sizeof(struct lpfc_mbx_read_fcf_tbl)); 2252 *next_fcf_index = bf_get(lpfc_mbx_read_fcf_tbl_nxt_vindx, read_fcf); 2253 new_fcf_record = (struct fcf_record *)(virt_addr + 2254 sizeof(struct lpfc_mbx_read_fcf_tbl)); 2255 lpfc_sli_pcimem_bcopy(new_fcf_record, new_fcf_record, 2256 offsetof(struct fcf_record, vlan_bitmap)); 2257 new_fcf_record->word137 = le32_to_cpu(new_fcf_record->word137); 2258 new_fcf_record->word138 = le32_to_cpu(new_fcf_record->word138); 2259 2260 return new_fcf_record; 2261 } 2262 2263 /** 2264 * lpfc_sli4_log_fcf_record_info - Log the information of a fcf record 2265 * @phba: pointer to lpfc hba data structure. 2266 * @fcf_record: pointer to the fcf record. 2267 * @vlan_id: the lowest vlan identifier associated to this fcf record. 2268 * @next_fcf_index: the index to the next fcf record in hba's fcf table. 2269 * 2270 * This routine logs the detailed FCF record if the LOG_FIP loggin is 2271 * enabled. 2272 **/ 2273 static void 2274 lpfc_sli4_log_fcf_record_info(struct lpfc_hba *phba, 2275 struct fcf_record *fcf_record, 2276 uint16_t vlan_id, 2277 uint16_t next_fcf_index) 2278 { 2279 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2280 "2764 READ_FCF_RECORD:\n" 2281 "\tFCF_Index : x%x\n" 2282 "\tFCF_Avail : x%x\n" 2283 "\tFCF_Valid : x%x\n" 2284 "\tFCF_SOL : x%x\n" 2285 "\tFIP_Priority : x%x\n" 2286 "\tMAC_Provider : x%x\n" 2287 "\tLowest VLANID : x%x\n" 2288 "\tFCF_MAC Addr : x%x:%x:%x:%x:%x:%x\n" 2289 "\tFabric_Name : x%x:%x:%x:%x:%x:%x:%x:%x\n" 2290 "\tSwitch_Name : x%x:%x:%x:%x:%x:%x:%x:%x\n" 2291 "\tNext_FCF_Index: x%x\n", 2292 bf_get(lpfc_fcf_record_fcf_index, fcf_record), 2293 bf_get(lpfc_fcf_record_fcf_avail, fcf_record), 2294 bf_get(lpfc_fcf_record_fcf_valid, fcf_record), 2295 bf_get(lpfc_fcf_record_fcf_sol, fcf_record), 2296 fcf_record->fip_priority, 2297 bf_get(lpfc_fcf_record_mac_addr_prov, fcf_record), 2298 vlan_id, 2299 bf_get(lpfc_fcf_record_mac_0, fcf_record), 2300 bf_get(lpfc_fcf_record_mac_1, fcf_record), 2301 bf_get(lpfc_fcf_record_mac_2, fcf_record), 2302 bf_get(lpfc_fcf_record_mac_3, fcf_record), 2303 bf_get(lpfc_fcf_record_mac_4, fcf_record), 2304 bf_get(lpfc_fcf_record_mac_5, fcf_record), 2305 bf_get(lpfc_fcf_record_fab_name_0, fcf_record), 2306 bf_get(lpfc_fcf_record_fab_name_1, fcf_record), 2307 bf_get(lpfc_fcf_record_fab_name_2, fcf_record), 2308 bf_get(lpfc_fcf_record_fab_name_3, fcf_record), 2309 bf_get(lpfc_fcf_record_fab_name_4, fcf_record), 2310 bf_get(lpfc_fcf_record_fab_name_5, fcf_record), 2311 bf_get(lpfc_fcf_record_fab_name_6, fcf_record), 2312 bf_get(lpfc_fcf_record_fab_name_7, fcf_record), 2313 bf_get(lpfc_fcf_record_switch_name_0, fcf_record), 2314 bf_get(lpfc_fcf_record_switch_name_1, fcf_record), 2315 bf_get(lpfc_fcf_record_switch_name_2, fcf_record), 2316 bf_get(lpfc_fcf_record_switch_name_3, fcf_record), 2317 bf_get(lpfc_fcf_record_switch_name_4, fcf_record), 2318 bf_get(lpfc_fcf_record_switch_name_5, fcf_record), 2319 bf_get(lpfc_fcf_record_switch_name_6, fcf_record), 2320 bf_get(lpfc_fcf_record_switch_name_7, fcf_record), 2321 next_fcf_index); 2322 } 2323 2324 /** 2325 * lpfc_sli4_fcf_record_match - testing new FCF record for matching existing FCF 2326 * @phba: pointer to lpfc hba data structure. 2327 * @fcf_rec: pointer to an existing FCF record. 2328 * @new_fcf_record: pointer to a new FCF record. 2329 * @new_vlan_id: vlan id from the new FCF record. 2330 * 2331 * This function performs matching test of a new FCF record against an existing 2332 * FCF record. If the new_vlan_id passed in is LPFC_FCOE_IGNORE_VID, vlan id 2333 * will not be used as part of the FCF record matching criteria. 2334 * 2335 * Returns true if all the fields matching, otherwise returns false. 2336 */ 2337 static bool 2338 lpfc_sli4_fcf_record_match(struct lpfc_hba *phba, 2339 struct lpfc_fcf_rec *fcf_rec, 2340 struct fcf_record *new_fcf_record, 2341 uint16_t new_vlan_id) 2342 { 2343 if (new_vlan_id != LPFC_FCOE_IGNORE_VID) 2344 if (!lpfc_vlan_id_match(fcf_rec->vlan_id, new_vlan_id)) 2345 return false; 2346 if (!lpfc_mac_addr_match(fcf_rec->mac_addr, new_fcf_record)) 2347 return false; 2348 if (!lpfc_sw_name_match(fcf_rec->switch_name, new_fcf_record)) 2349 return false; 2350 if (!lpfc_fab_name_match(fcf_rec->fabric_name, new_fcf_record)) 2351 return false; 2352 if (fcf_rec->priority != new_fcf_record->fip_priority) 2353 return false; 2354 return true; 2355 } 2356 2357 /** 2358 * lpfc_sli4_fcf_rr_next_proc - processing next roundrobin fcf 2359 * @vport: Pointer to vport object. 2360 * @fcf_index: index to next fcf. 2361 * 2362 * This function processing the roundrobin fcf failover to next fcf index. 2363 * When this function is invoked, there will be a current fcf registered 2364 * for flogi. 2365 * Return: 0 for continue retrying flogi on currently registered fcf; 2366 * 1 for stop flogi on currently registered fcf; 2367 */ 2368 int lpfc_sli4_fcf_rr_next_proc(struct lpfc_vport *vport, uint16_t fcf_index) 2369 { 2370 struct lpfc_hba *phba = vport->phba; 2371 int rc; 2372 2373 if (fcf_index == LPFC_FCOE_FCF_NEXT_NONE) { 2374 spin_lock_irq(&phba->hbalock); 2375 if (phba->hba_flag & HBA_DEVLOSS_TMO) { 2376 spin_unlock_irq(&phba->hbalock); 2377 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2378 "2872 Devloss tmo with no eligible " 2379 "FCF, unregister in-use FCF (x%x) " 2380 "and rescan FCF table\n", 2381 phba->fcf.current_rec.fcf_indx); 2382 lpfc_unregister_fcf_rescan(phba); 2383 goto stop_flogi_current_fcf; 2384 } 2385 /* Mark the end to FLOGI roundrobin failover */ 2386 phba->hba_flag &= ~FCF_RR_INPROG; 2387 /* Allow action to new fcf asynchronous event */ 2388 phba->fcf.fcf_flag &= ~(FCF_AVAILABLE | FCF_SCAN_DONE); 2389 spin_unlock_irq(&phba->hbalock); 2390 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2391 "2865 No FCF available, stop roundrobin FCF " 2392 "failover and change port state:x%x/x%x\n", 2393 phba->pport->port_state, LPFC_VPORT_UNKNOWN); 2394 phba->pport->port_state = LPFC_VPORT_UNKNOWN; 2395 2396 if (!phba->fcf.fcf_redisc_attempted) { 2397 lpfc_unregister_fcf(phba); 2398 2399 rc = lpfc_sli4_redisc_fcf_table(phba); 2400 if (!rc) { 2401 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2402 "3195 Rediscover FCF table\n"); 2403 phba->fcf.fcf_redisc_attempted = 1; 2404 lpfc_sli4_clear_fcf_rr_bmask(phba); 2405 } else { 2406 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP, 2407 "3196 Rediscover FCF table " 2408 "failed. Status:x%x\n", rc); 2409 } 2410 } else { 2411 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP, 2412 "3197 Already rediscover FCF table " 2413 "attempted. No more retry\n"); 2414 } 2415 goto stop_flogi_current_fcf; 2416 } else { 2417 lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_ELS, 2418 "2794 Try FLOGI roundrobin FCF failover to " 2419 "(x%x)\n", fcf_index); 2420 rc = lpfc_sli4_fcf_rr_read_fcf_rec(phba, fcf_index); 2421 if (rc) 2422 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP | LOG_ELS, 2423 "2761 FLOGI roundrobin FCF failover " 2424 "failed (rc:x%x) to read FCF (x%x)\n", 2425 rc, phba->fcf.current_rec.fcf_indx); 2426 else 2427 goto stop_flogi_current_fcf; 2428 } 2429 return 0; 2430 2431 stop_flogi_current_fcf: 2432 lpfc_can_disctmo(vport); 2433 return 1; 2434 } 2435 2436 /** 2437 * lpfc_sli4_fcf_pri_list_del 2438 * @phba: pointer to lpfc hba data structure. 2439 * @fcf_index: the index of the fcf record to delete 2440 * This routine checks the on list flag of the fcf_index to be deleted. 2441 * If it is one the list then it is removed from the list, and the flag 2442 * is cleared. This routine grab the hbalock before removing the fcf 2443 * record from the list. 2444 **/ 2445 static void lpfc_sli4_fcf_pri_list_del(struct lpfc_hba *phba, 2446 uint16_t fcf_index) 2447 { 2448 struct lpfc_fcf_pri *new_fcf_pri; 2449 2450 new_fcf_pri = &phba->fcf.fcf_pri[fcf_index]; 2451 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2452 "3058 deleting idx x%x pri x%x flg x%x\n", 2453 fcf_index, new_fcf_pri->fcf_rec.priority, 2454 new_fcf_pri->fcf_rec.flag); 2455 spin_lock_irq(&phba->hbalock); 2456 if (new_fcf_pri->fcf_rec.flag & LPFC_FCF_ON_PRI_LIST) { 2457 if (phba->fcf.current_rec.priority == 2458 new_fcf_pri->fcf_rec.priority) 2459 phba->fcf.eligible_fcf_cnt--; 2460 list_del_init(&new_fcf_pri->list); 2461 new_fcf_pri->fcf_rec.flag &= ~LPFC_FCF_ON_PRI_LIST; 2462 } 2463 spin_unlock_irq(&phba->hbalock); 2464 } 2465 2466 /** 2467 * lpfc_sli4_set_fcf_flogi_fail 2468 * @phba: pointer to lpfc hba data structure. 2469 * @fcf_index: the index of the fcf record to update 2470 * This routine acquires the hbalock and then set the LPFC_FCF_FLOGI_FAILED 2471 * flag so the round robin selection for the particular priority level 2472 * will try a different fcf record that does not have this bit set. 2473 * If the fcf record is re-read for any reason this flag is cleared brfore 2474 * adding it to the priority list. 2475 **/ 2476 void 2477 lpfc_sli4_set_fcf_flogi_fail(struct lpfc_hba *phba, uint16_t fcf_index) 2478 { 2479 struct lpfc_fcf_pri *new_fcf_pri; 2480 new_fcf_pri = &phba->fcf.fcf_pri[fcf_index]; 2481 spin_lock_irq(&phba->hbalock); 2482 new_fcf_pri->fcf_rec.flag |= LPFC_FCF_FLOGI_FAILED; 2483 spin_unlock_irq(&phba->hbalock); 2484 } 2485 2486 /** 2487 * lpfc_sli4_fcf_pri_list_add 2488 * @phba: pointer to lpfc hba data structure. 2489 * @fcf_index: the index of the fcf record to add 2490 * @new_fcf_record: pointer to a new FCF record. 2491 * This routine checks the priority of the fcf_index to be added. 2492 * If it is a lower priority than the current head of the fcf_pri list 2493 * then it is added to the list in the right order. 2494 * If it is the same priority as the current head of the list then it 2495 * is added to the head of the list and its bit in the rr_bmask is set. 2496 * If the fcf_index to be added is of a higher priority than the current 2497 * head of the list then the rr_bmask is cleared, its bit is set in the 2498 * rr_bmask and it is added to the head of the list. 2499 * returns: 2500 * 0=success 1=failure 2501 **/ 2502 static int lpfc_sli4_fcf_pri_list_add(struct lpfc_hba *phba, 2503 uint16_t fcf_index, 2504 struct fcf_record *new_fcf_record) 2505 { 2506 uint16_t current_fcf_pri; 2507 uint16_t last_index; 2508 struct lpfc_fcf_pri *fcf_pri; 2509 struct lpfc_fcf_pri *next_fcf_pri; 2510 struct lpfc_fcf_pri *new_fcf_pri; 2511 int ret; 2512 2513 new_fcf_pri = &phba->fcf.fcf_pri[fcf_index]; 2514 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2515 "3059 adding idx x%x pri x%x flg x%x\n", 2516 fcf_index, new_fcf_record->fip_priority, 2517 new_fcf_pri->fcf_rec.flag); 2518 spin_lock_irq(&phba->hbalock); 2519 if (new_fcf_pri->fcf_rec.flag & LPFC_FCF_ON_PRI_LIST) 2520 list_del_init(&new_fcf_pri->list); 2521 new_fcf_pri->fcf_rec.fcf_index = fcf_index; 2522 new_fcf_pri->fcf_rec.priority = new_fcf_record->fip_priority; 2523 if (list_empty(&phba->fcf.fcf_pri_list)) { 2524 list_add(&new_fcf_pri->list, &phba->fcf.fcf_pri_list); 2525 ret = lpfc_sli4_fcf_rr_index_set(phba, 2526 new_fcf_pri->fcf_rec.fcf_index); 2527 goto out; 2528 } 2529 2530 last_index = find_first_bit(phba->fcf.fcf_rr_bmask, 2531 LPFC_SLI4_FCF_TBL_INDX_MAX); 2532 if (last_index >= LPFC_SLI4_FCF_TBL_INDX_MAX) { 2533 ret = 0; /* Empty rr list */ 2534 goto out; 2535 } 2536 current_fcf_pri = phba->fcf.fcf_pri[last_index].fcf_rec.priority; 2537 if (new_fcf_pri->fcf_rec.priority <= current_fcf_pri) { 2538 list_add(&new_fcf_pri->list, &phba->fcf.fcf_pri_list); 2539 if (new_fcf_pri->fcf_rec.priority < current_fcf_pri) { 2540 memset(phba->fcf.fcf_rr_bmask, 0, 2541 sizeof(*phba->fcf.fcf_rr_bmask)); 2542 /* fcfs_at_this_priority_level = 1; */ 2543 phba->fcf.eligible_fcf_cnt = 1; 2544 } else 2545 /* fcfs_at_this_priority_level++; */ 2546 phba->fcf.eligible_fcf_cnt++; 2547 ret = lpfc_sli4_fcf_rr_index_set(phba, 2548 new_fcf_pri->fcf_rec.fcf_index); 2549 goto out; 2550 } 2551 2552 list_for_each_entry_safe(fcf_pri, next_fcf_pri, 2553 &phba->fcf.fcf_pri_list, list) { 2554 if (new_fcf_pri->fcf_rec.priority <= 2555 fcf_pri->fcf_rec.priority) { 2556 if (fcf_pri->list.prev == &phba->fcf.fcf_pri_list) 2557 list_add(&new_fcf_pri->list, 2558 &phba->fcf.fcf_pri_list); 2559 else 2560 list_add(&new_fcf_pri->list, 2561 &((struct lpfc_fcf_pri *) 2562 fcf_pri->list.prev)->list); 2563 ret = 0; 2564 goto out; 2565 } else if (fcf_pri->list.next == &phba->fcf.fcf_pri_list 2566 || new_fcf_pri->fcf_rec.priority < 2567 next_fcf_pri->fcf_rec.priority) { 2568 list_add(&new_fcf_pri->list, &fcf_pri->list); 2569 ret = 0; 2570 goto out; 2571 } 2572 if (new_fcf_pri->fcf_rec.priority > fcf_pri->fcf_rec.priority) 2573 continue; 2574 2575 } 2576 ret = 1; 2577 out: 2578 /* we use = instead of |= to clear the FLOGI_FAILED flag. */ 2579 new_fcf_pri->fcf_rec.flag = LPFC_FCF_ON_PRI_LIST; 2580 spin_unlock_irq(&phba->hbalock); 2581 return ret; 2582 } 2583 2584 /** 2585 * lpfc_mbx_cmpl_fcf_scan_read_fcf_rec - fcf scan read_fcf mbox cmpl handler. 2586 * @phba: pointer to lpfc hba data structure. 2587 * @mboxq: pointer to mailbox object. 2588 * 2589 * This function iterates through all the fcf records available in 2590 * HBA and chooses the optimal FCF record for discovery. After finding 2591 * the FCF for discovery it registers the FCF record and kicks start 2592 * discovery. 2593 * If FCF_IN_USE flag is set in currently used FCF, the routine tries to 2594 * use an FCF record which matches fabric name and mac address of the 2595 * currently used FCF record. 2596 * If the driver supports only one FCF, it will try to use the FCF record 2597 * used by BOOT_BIOS. 2598 */ 2599 void 2600 lpfc_mbx_cmpl_fcf_scan_read_fcf_rec(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq) 2601 { 2602 struct fcf_record *new_fcf_record; 2603 uint32_t boot_flag, addr_mode; 2604 uint16_t fcf_index, next_fcf_index; 2605 struct lpfc_fcf_rec *fcf_rec = NULL; 2606 uint16_t vlan_id = LPFC_FCOE_NULL_VID; 2607 bool select_new_fcf; 2608 int rc; 2609 2610 /* If there is pending FCoE event restart FCF table scan */ 2611 if (lpfc_check_pending_fcoe_event(phba, LPFC_SKIP_UNREG_FCF)) { 2612 lpfc_sli4_mbox_cmd_free(phba, mboxq); 2613 return; 2614 } 2615 2616 /* Parse the FCF record from the non-embedded mailbox command */ 2617 new_fcf_record = lpfc_sli4_fcf_rec_mbox_parse(phba, mboxq, 2618 &next_fcf_index); 2619 if (!new_fcf_record) { 2620 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 2621 "2765 Mailbox command READ_FCF_RECORD " 2622 "failed to retrieve a FCF record.\n"); 2623 /* Let next new FCF event trigger fast failover */ 2624 spin_lock_irq(&phba->hbalock); 2625 phba->hba_flag &= ~FCF_TS_INPROG; 2626 spin_unlock_irq(&phba->hbalock); 2627 lpfc_sli4_mbox_cmd_free(phba, mboxq); 2628 return; 2629 } 2630 2631 /* Check the FCF record against the connection list */ 2632 rc = lpfc_match_fcf_conn_list(phba, new_fcf_record, &boot_flag, 2633 &addr_mode, &vlan_id); 2634 2635 /* Log the FCF record information if turned on */ 2636 lpfc_sli4_log_fcf_record_info(phba, new_fcf_record, vlan_id, 2637 next_fcf_index); 2638 2639 /* 2640 * If the fcf record does not match with connect list entries 2641 * read the next entry; otherwise, this is an eligible FCF 2642 * record for roundrobin FCF failover. 2643 */ 2644 if (!rc) { 2645 lpfc_sli4_fcf_pri_list_del(phba, 2646 bf_get(lpfc_fcf_record_fcf_index, 2647 new_fcf_record)); 2648 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP, 2649 "2781 FCF (x%x) failed connection " 2650 "list check: (x%x/x%x/%x)\n", 2651 bf_get(lpfc_fcf_record_fcf_index, 2652 new_fcf_record), 2653 bf_get(lpfc_fcf_record_fcf_avail, 2654 new_fcf_record), 2655 bf_get(lpfc_fcf_record_fcf_valid, 2656 new_fcf_record), 2657 bf_get(lpfc_fcf_record_fcf_sol, 2658 new_fcf_record)); 2659 if ((phba->fcf.fcf_flag & FCF_IN_USE) && 2660 lpfc_sli4_fcf_record_match(phba, &phba->fcf.current_rec, 2661 new_fcf_record, LPFC_FCOE_IGNORE_VID)) { 2662 if (bf_get(lpfc_fcf_record_fcf_index, new_fcf_record) != 2663 phba->fcf.current_rec.fcf_indx) { 2664 lpfc_printf_log(phba, KERN_ERR, 2665 LOG_TRACE_EVENT, 2666 "2862 FCF (x%x) matches property " 2667 "of in-use FCF (x%x)\n", 2668 bf_get(lpfc_fcf_record_fcf_index, 2669 new_fcf_record), 2670 phba->fcf.current_rec.fcf_indx); 2671 goto read_next_fcf; 2672 } 2673 /* 2674 * In case the current in-use FCF record becomes 2675 * invalid/unavailable during FCF discovery that 2676 * was not triggered by fast FCF failover process, 2677 * treat it as fast FCF failover. 2678 */ 2679 if (!(phba->fcf.fcf_flag & FCF_REDISC_PEND) && 2680 !(phba->fcf.fcf_flag & FCF_REDISC_FOV)) { 2681 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP, 2682 "2835 Invalid in-use FCF " 2683 "(x%x), enter FCF failover " 2684 "table scan.\n", 2685 phba->fcf.current_rec.fcf_indx); 2686 spin_lock_irq(&phba->hbalock); 2687 phba->fcf.fcf_flag |= FCF_REDISC_FOV; 2688 spin_unlock_irq(&phba->hbalock); 2689 lpfc_sli4_mbox_cmd_free(phba, mboxq); 2690 lpfc_sli4_fcf_scan_read_fcf_rec(phba, 2691 LPFC_FCOE_FCF_GET_FIRST); 2692 return; 2693 } 2694 } 2695 goto read_next_fcf; 2696 } else { 2697 fcf_index = bf_get(lpfc_fcf_record_fcf_index, new_fcf_record); 2698 rc = lpfc_sli4_fcf_pri_list_add(phba, fcf_index, 2699 new_fcf_record); 2700 if (rc) 2701 goto read_next_fcf; 2702 } 2703 2704 /* 2705 * If this is not the first FCF discovery of the HBA, use last 2706 * FCF record for the discovery. The condition that a rescan 2707 * matches the in-use FCF record: fabric name, switch name, mac 2708 * address, and vlan_id. 2709 */ 2710 spin_lock_irq(&phba->hbalock); 2711 if (phba->fcf.fcf_flag & FCF_IN_USE) { 2712 if (phba->cfg_fcf_failover_policy == LPFC_FCF_FOV && 2713 lpfc_sli4_fcf_record_match(phba, &phba->fcf.current_rec, 2714 new_fcf_record, vlan_id)) { 2715 if (bf_get(lpfc_fcf_record_fcf_index, new_fcf_record) == 2716 phba->fcf.current_rec.fcf_indx) { 2717 phba->fcf.fcf_flag |= FCF_AVAILABLE; 2718 if (phba->fcf.fcf_flag & FCF_REDISC_PEND) 2719 /* Stop FCF redisc wait timer */ 2720 __lpfc_sli4_stop_fcf_redisc_wait_timer( 2721 phba); 2722 else if (phba->fcf.fcf_flag & FCF_REDISC_FOV) 2723 /* Fast failover, mark completed */ 2724 phba->fcf.fcf_flag &= ~FCF_REDISC_FOV; 2725 spin_unlock_irq(&phba->hbalock); 2726 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2727 "2836 New FCF matches in-use " 2728 "FCF (x%x), port_state:x%x, " 2729 "fc_flag:x%x\n", 2730 phba->fcf.current_rec.fcf_indx, 2731 phba->pport->port_state, 2732 phba->pport->fc_flag); 2733 goto out; 2734 } else 2735 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 2736 "2863 New FCF (x%x) matches " 2737 "property of in-use FCF (x%x)\n", 2738 bf_get(lpfc_fcf_record_fcf_index, 2739 new_fcf_record), 2740 phba->fcf.current_rec.fcf_indx); 2741 } 2742 /* 2743 * Read next FCF record from HBA searching for the matching 2744 * with in-use record only if not during the fast failover 2745 * period. In case of fast failover period, it shall try to 2746 * determine whether the FCF record just read should be the 2747 * next candidate. 2748 */ 2749 if (!(phba->fcf.fcf_flag & FCF_REDISC_FOV)) { 2750 spin_unlock_irq(&phba->hbalock); 2751 goto read_next_fcf; 2752 } 2753 } 2754 /* 2755 * Update on failover FCF record only if it's in FCF fast-failover 2756 * period; otherwise, update on current FCF record. 2757 */ 2758 if (phba->fcf.fcf_flag & FCF_REDISC_FOV) 2759 fcf_rec = &phba->fcf.failover_rec; 2760 else 2761 fcf_rec = &phba->fcf.current_rec; 2762 2763 if (phba->fcf.fcf_flag & FCF_AVAILABLE) { 2764 /* 2765 * If the driver FCF record does not have boot flag 2766 * set and new hba fcf record has boot flag set, use 2767 * the new hba fcf record. 2768 */ 2769 if (boot_flag && !(fcf_rec->flag & BOOT_ENABLE)) { 2770 /* Choose this FCF record */ 2771 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2772 "2837 Update current FCF record " 2773 "(x%x) with new FCF record (x%x)\n", 2774 fcf_rec->fcf_indx, 2775 bf_get(lpfc_fcf_record_fcf_index, 2776 new_fcf_record)); 2777 __lpfc_update_fcf_record(phba, fcf_rec, new_fcf_record, 2778 addr_mode, vlan_id, BOOT_ENABLE); 2779 spin_unlock_irq(&phba->hbalock); 2780 goto read_next_fcf; 2781 } 2782 /* 2783 * If the driver FCF record has boot flag set and the 2784 * new hba FCF record does not have boot flag, read 2785 * the next FCF record. 2786 */ 2787 if (!boot_flag && (fcf_rec->flag & BOOT_ENABLE)) { 2788 spin_unlock_irq(&phba->hbalock); 2789 goto read_next_fcf; 2790 } 2791 /* 2792 * If the new hba FCF record has lower priority value 2793 * than the driver FCF record, use the new record. 2794 */ 2795 if (new_fcf_record->fip_priority < fcf_rec->priority) { 2796 /* Choose the new FCF record with lower priority */ 2797 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2798 "2838 Update current FCF record " 2799 "(x%x) with new FCF record (x%x)\n", 2800 fcf_rec->fcf_indx, 2801 bf_get(lpfc_fcf_record_fcf_index, 2802 new_fcf_record)); 2803 __lpfc_update_fcf_record(phba, fcf_rec, new_fcf_record, 2804 addr_mode, vlan_id, 0); 2805 /* Reset running random FCF selection count */ 2806 phba->fcf.eligible_fcf_cnt = 1; 2807 } else if (new_fcf_record->fip_priority == fcf_rec->priority) { 2808 /* Update running random FCF selection count */ 2809 phba->fcf.eligible_fcf_cnt++; 2810 select_new_fcf = lpfc_sli4_new_fcf_random_select(phba, 2811 phba->fcf.eligible_fcf_cnt); 2812 if (select_new_fcf) { 2813 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2814 "2839 Update current FCF record " 2815 "(x%x) with new FCF record (x%x)\n", 2816 fcf_rec->fcf_indx, 2817 bf_get(lpfc_fcf_record_fcf_index, 2818 new_fcf_record)); 2819 /* Choose the new FCF by random selection */ 2820 __lpfc_update_fcf_record(phba, fcf_rec, 2821 new_fcf_record, 2822 addr_mode, vlan_id, 0); 2823 } 2824 } 2825 spin_unlock_irq(&phba->hbalock); 2826 goto read_next_fcf; 2827 } 2828 /* 2829 * This is the first suitable FCF record, choose this record for 2830 * initial best-fit FCF. 2831 */ 2832 if (fcf_rec) { 2833 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2834 "2840 Update initial FCF candidate " 2835 "with FCF (x%x)\n", 2836 bf_get(lpfc_fcf_record_fcf_index, 2837 new_fcf_record)); 2838 __lpfc_update_fcf_record(phba, fcf_rec, new_fcf_record, 2839 addr_mode, vlan_id, (boot_flag ? 2840 BOOT_ENABLE : 0)); 2841 phba->fcf.fcf_flag |= FCF_AVAILABLE; 2842 /* Setup initial running random FCF selection count */ 2843 phba->fcf.eligible_fcf_cnt = 1; 2844 } 2845 spin_unlock_irq(&phba->hbalock); 2846 goto read_next_fcf; 2847 2848 read_next_fcf: 2849 lpfc_sli4_mbox_cmd_free(phba, mboxq); 2850 if (next_fcf_index == LPFC_FCOE_FCF_NEXT_NONE || next_fcf_index == 0) { 2851 if (phba->fcf.fcf_flag & FCF_REDISC_FOV) { 2852 /* 2853 * Case of FCF fast failover scan 2854 */ 2855 2856 /* 2857 * It has not found any suitable FCF record, cancel 2858 * FCF scan inprogress, and do nothing 2859 */ 2860 if (!(phba->fcf.failover_rec.flag & RECORD_VALID)) { 2861 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP, 2862 "2782 No suitable FCF found: " 2863 "(x%x/x%x)\n", 2864 phba->fcoe_eventtag_at_fcf_scan, 2865 bf_get(lpfc_fcf_record_fcf_index, 2866 new_fcf_record)); 2867 spin_lock_irq(&phba->hbalock); 2868 if (phba->hba_flag & HBA_DEVLOSS_TMO) { 2869 phba->hba_flag &= ~FCF_TS_INPROG; 2870 spin_unlock_irq(&phba->hbalock); 2871 /* Unregister in-use FCF and rescan */ 2872 lpfc_printf_log(phba, KERN_INFO, 2873 LOG_FIP, 2874 "2864 On devloss tmo " 2875 "unreg in-use FCF and " 2876 "rescan FCF table\n"); 2877 lpfc_unregister_fcf_rescan(phba); 2878 return; 2879 } 2880 /* 2881 * Let next new FCF event trigger fast failover 2882 */ 2883 phba->hba_flag &= ~FCF_TS_INPROG; 2884 spin_unlock_irq(&phba->hbalock); 2885 return; 2886 } 2887 /* 2888 * It has found a suitable FCF record that is not 2889 * the same as in-use FCF record, unregister the 2890 * in-use FCF record, replace the in-use FCF record 2891 * with the new FCF record, mark FCF fast failover 2892 * completed, and then start register the new FCF 2893 * record. 2894 */ 2895 2896 /* Unregister the current in-use FCF record */ 2897 lpfc_unregister_fcf(phba); 2898 2899 /* Replace in-use record with the new record */ 2900 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2901 "2842 Replace in-use FCF (x%x) " 2902 "with failover FCF (x%x)\n", 2903 phba->fcf.current_rec.fcf_indx, 2904 phba->fcf.failover_rec.fcf_indx); 2905 memcpy(&phba->fcf.current_rec, 2906 &phba->fcf.failover_rec, 2907 sizeof(struct lpfc_fcf_rec)); 2908 /* 2909 * Mark the fast FCF failover rediscovery completed 2910 * and the start of the first round of the roundrobin 2911 * FCF failover. 2912 */ 2913 spin_lock_irq(&phba->hbalock); 2914 phba->fcf.fcf_flag &= ~FCF_REDISC_FOV; 2915 spin_unlock_irq(&phba->hbalock); 2916 /* Register to the new FCF record */ 2917 lpfc_register_fcf(phba); 2918 } else { 2919 /* 2920 * In case of transaction period to fast FCF failover, 2921 * do nothing when search to the end of the FCF table. 2922 */ 2923 if ((phba->fcf.fcf_flag & FCF_REDISC_EVT) || 2924 (phba->fcf.fcf_flag & FCF_REDISC_PEND)) 2925 return; 2926 2927 if (phba->cfg_fcf_failover_policy == LPFC_FCF_FOV && 2928 phba->fcf.fcf_flag & FCF_IN_USE) { 2929 /* 2930 * In case the current in-use FCF record no 2931 * longer existed during FCF discovery that 2932 * was not triggered by fast FCF failover 2933 * process, treat it as fast FCF failover. 2934 */ 2935 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2936 "2841 In-use FCF record (x%x) " 2937 "not reported, entering fast " 2938 "FCF failover mode scanning.\n", 2939 phba->fcf.current_rec.fcf_indx); 2940 spin_lock_irq(&phba->hbalock); 2941 phba->fcf.fcf_flag |= FCF_REDISC_FOV; 2942 spin_unlock_irq(&phba->hbalock); 2943 lpfc_sli4_fcf_scan_read_fcf_rec(phba, 2944 LPFC_FCOE_FCF_GET_FIRST); 2945 return; 2946 } 2947 /* Register to the new FCF record */ 2948 lpfc_register_fcf(phba); 2949 } 2950 } else 2951 lpfc_sli4_fcf_scan_read_fcf_rec(phba, next_fcf_index); 2952 return; 2953 2954 out: 2955 lpfc_sli4_mbox_cmd_free(phba, mboxq); 2956 lpfc_register_fcf(phba); 2957 2958 return; 2959 } 2960 2961 /** 2962 * lpfc_mbx_cmpl_fcf_rr_read_fcf_rec - fcf roundrobin read_fcf mbox cmpl hdler 2963 * @phba: pointer to lpfc hba data structure. 2964 * @mboxq: pointer to mailbox object. 2965 * 2966 * This is the callback function for FLOGI failure roundrobin FCF failover 2967 * read FCF record mailbox command from the eligible FCF record bmask for 2968 * performing the failover. If the FCF read back is not valid/available, it 2969 * fails through to retrying FLOGI to the currently registered FCF again. 2970 * Otherwise, if the FCF read back is valid and available, it will set the 2971 * newly read FCF record to the failover FCF record, unregister currently 2972 * registered FCF record, copy the failover FCF record to the current 2973 * FCF record, and then register the current FCF record before proceeding 2974 * to trying FLOGI on the new failover FCF. 2975 */ 2976 void 2977 lpfc_mbx_cmpl_fcf_rr_read_fcf_rec(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq) 2978 { 2979 struct fcf_record *new_fcf_record; 2980 uint32_t boot_flag, addr_mode; 2981 uint16_t next_fcf_index, fcf_index; 2982 uint16_t current_fcf_index; 2983 uint16_t vlan_id = LPFC_FCOE_NULL_VID; 2984 int rc; 2985 2986 /* If link state is not up, stop the roundrobin failover process */ 2987 if (phba->link_state < LPFC_LINK_UP) { 2988 spin_lock_irq(&phba->hbalock); 2989 phba->fcf.fcf_flag &= ~FCF_DISCOVERY; 2990 phba->hba_flag &= ~FCF_RR_INPROG; 2991 spin_unlock_irq(&phba->hbalock); 2992 goto out; 2993 } 2994 2995 /* Parse the FCF record from the non-embedded mailbox command */ 2996 new_fcf_record = lpfc_sli4_fcf_rec_mbox_parse(phba, mboxq, 2997 &next_fcf_index); 2998 if (!new_fcf_record) { 2999 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP, 3000 "2766 Mailbox command READ_FCF_RECORD " 3001 "failed to retrieve a FCF record. " 3002 "hba_flg x%x fcf_flg x%x\n", phba->hba_flag, 3003 phba->fcf.fcf_flag); 3004 lpfc_unregister_fcf_rescan(phba); 3005 goto out; 3006 } 3007 3008 /* Get the needed parameters from FCF record */ 3009 rc = lpfc_match_fcf_conn_list(phba, new_fcf_record, &boot_flag, 3010 &addr_mode, &vlan_id); 3011 3012 /* Log the FCF record information if turned on */ 3013 lpfc_sli4_log_fcf_record_info(phba, new_fcf_record, vlan_id, 3014 next_fcf_index); 3015 3016 fcf_index = bf_get(lpfc_fcf_record_fcf_index, new_fcf_record); 3017 if (!rc) { 3018 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 3019 "2848 Remove ineligible FCF (x%x) from " 3020 "from roundrobin bmask\n", fcf_index); 3021 /* Clear roundrobin bmask bit for ineligible FCF */ 3022 lpfc_sli4_fcf_rr_index_clear(phba, fcf_index); 3023 /* Perform next round of roundrobin FCF failover */ 3024 fcf_index = lpfc_sli4_fcf_rr_next_index_get(phba); 3025 rc = lpfc_sli4_fcf_rr_next_proc(phba->pport, fcf_index); 3026 if (rc) 3027 goto out; 3028 goto error_out; 3029 } 3030 3031 if (fcf_index == phba->fcf.current_rec.fcf_indx) { 3032 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 3033 "2760 Perform FLOGI roundrobin FCF failover: " 3034 "FCF (x%x) back to FCF (x%x)\n", 3035 phba->fcf.current_rec.fcf_indx, fcf_index); 3036 /* Wait 500 ms before retrying FLOGI to current FCF */ 3037 msleep(500); 3038 lpfc_issue_init_vfi(phba->pport); 3039 goto out; 3040 } 3041 3042 /* Upload new FCF record to the failover FCF record */ 3043 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 3044 "2834 Update current FCF (x%x) with new FCF (x%x)\n", 3045 phba->fcf.failover_rec.fcf_indx, fcf_index); 3046 spin_lock_irq(&phba->hbalock); 3047 __lpfc_update_fcf_record(phba, &phba->fcf.failover_rec, 3048 new_fcf_record, addr_mode, vlan_id, 3049 (boot_flag ? BOOT_ENABLE : 0)); 3050 spin_unlock_irq(&phba->hbalock); 3051 3052 current_fcf_index = phba->fcf.current_rec.fcf_indx; 3053 3054 /* Unregister the current in-use FCF record */ 3055 lpfc_unregister_fcf(phba); 3056 3057 /* Replace in-use record with the new record */ 3058 memcpy(&phba->fcf.current_rec, &phba->fcf.failover_rec, 3059 sizeof(struct lpfc_fcf_rec)); 3060 3061 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 3062 "2783 Perform FLOGI roundrobin FCF failover: FCF " 3063 "(x%x) to FCF (x%x)\n", current_fcf_index, fcf_index); 3064 3065 error_out: 3066 lpfc_register_fcf(phba); 3067 out: 3068 lpfc_sli4_mbox_cmd_free(phba, mboxq); 3069 } 3070 3071 /** 3072 * lpfc_mbx_cmpl_read_fcf_rec - read fcf completion handler. 3073 * @phba: pointer to lpfc hba data structure. 3074 * @mboxq: pointer to mailbox object. 3075 * 3076 * This is the callback function of read FCF record mailbox command for 3077 * updating the eligible FCF bmask for FLOGI failure roundrobin FCF 3078 * failover when a new FCF event happened. If the FCF read back is 3079 * valid/available and it passes the connection list check, it updates 3080 * the bmask for the eligible FCF record for roundrobin failover. 3081 */ 3082 void 3083 lpfc_mbx_cmpl_read_fcf_rec(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq) 3084 { 3085 struct fcf_record *new_fcf_record; 3086 uint32_t boot_flag, addr_mode; 3087 uint16_t fcf_index, next_fcf_index; 3088 uint16_t vlan_id = LPFC_FCOE_NULL_VID; 3089 int rc; 3090 3091 /* If link state is not up, no need to proceed */ 3092 if (phba->link_state < LPFC_LINK_UP) 3093 goto out; 3094 3095 /* If FCF discovery period is over, no need to proceed */ 3096 if (!(phba->fcf.fcf_flag & FCF_DISCOVERY)) 3097 goto out; 3098 3099 /* Parse the FCF record from the non-embedded mailbox command */ 3100 new_fcf_record = lpfc_sli4_fcf_rec_mbox_parse(phba, mboxq, 3101 &next_fcf_index); 3102 if (!new_fcf_record) { 3103 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 3104 "2767 Mailbox command READ_FCF_RECORD " 3105 "failed to retrieve a FCF record.\n"); 3106 goto out; 3107 } 3108 3109 /* Check the connection list for eligibility */ 3110 rc = lpfc_match_fcf_conn_list(phba, new_fcf_record, &boot_flag, 3111 &addr_mode, &vlan_id); 3112 3113 /* Log the FCF record information if turned on */ 3114 lpfc_sli4_log_fcf_record_info(phba, new_fcf_record, vlan_id, 3115 next_fcf_index); 3116 3117 if (!rc) 3118 goto out; 3119 3120 /* Update the eligible FCF record index bmask */ 3121 fcf_index = bf_get(lpfc_fcf_record_fcf_index, new_fcf_record); 3122 3123 rc = lpfc_sli4_fcf_pri_list_add(phba, fcf_index, new_fcf_record); 3124 3125 out: 3126 lpfc_sli4_mbox_cmd_free(phba, mboxq); 3127 } 3128 3129 /** 3130 * lpfc_init_vfi_cmpl - Completion handler for init_vfi mbox command. 3131 * @phba: pointer to lpfc hba data structure. 3132 * @mboxq: pointer to mailbox data structure. 3133 * 3134 * This function handles completion of init vfi mailbox command. 3135 */ 3136 static void 3137 lpfc_init_vfi_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq) 3138 { 3139 struct lpfc_vport *vport = mboxq->vport; 3140 3141 /* 3142 * VFI not supported on interface type 0, just do the flogi 3143 * Also continue if the VFI is in use - just use the same one. 3144 */ 3145 if (mboxq->u.mb.mbxStatus && 3146 (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) != 3147 LPFC_SLI_INTF_IF_TYPE_0) && 3148 mboxq->u.mb.mbxStatus != MBX_VFI_IN_USE) { 3149 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 3150 "2891 Init VFI mailbox failed 0x%x\n", 3151 mboxq->u.mb.mbxStatus); 3152 mempool_free(mboxq, phba->mbox_mem_pool); 3153 lpfc_vport_set_state(vport, FC_VPORT_FAILED); 3154 return; 3155 } 3156 3157 lpfc_initial_flogi(vport); 3158 mempool_free(mboxq, phba->mbox_mem_pool); 3159 return; 3160 } 3161 3162 /** 3163 * lpfc_issue_init_vfi - Issue init_vfi mailbox command. 3164 * @vport: pointer to lpfc_vport data structure. 3165 * 3166 * This function issue a init_vfi mailbox command to initialize the VFI and 3167 * VPI for the physical port. 3168 */ 3169 void 3170 lpfc_issue_init_vfi(struct lpfc_vport *vport) 3171 { 3172 LPFC_MBOXQ_t *mboxq; 3173 int rc; 3174 struct lpfc_hba *phba = vport->phba; 3175 3176 mboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 3177 if (!mboxq) { 3178 lpfc_printf_vlog(vport, KERN_ERR, 3179 LOG_TRACE_EVENT, "2892 Failed to allocate " 3180 "init_vfi mailbox\n"); 3181 return; 3182 } 3183 lpfc_init_vfi(mboxq, vport); 3184 mboxq->mbox_cmpl = lpfc_init_vfi_cmpl; 3185 rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_NOWAIT); 3186 if (rc == MBX_NOT_FINISHED) { 3187 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 3188 "2893 Failed to issue init_vfi mailbox\n"); 3189 mempool_free(mboxq, vport->phba->mbox_mem_pool); 3190 } 3191 } 3192 3193 /** 3194 * lpfc_init_vpi_cmpl - Completion handler for init_vpi mbox command. 3195 * @phba: pointer to lpfc hba data structure. 3196 * @mboxq: pointer to mailbox data structure. 3197 * 3198 * This function handles completion of init vpi mailbox command. 3199 */ 3200 void 3201 lpfc_init_vpi_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq) 3202 { 3203 struct lpfc_vport *vport = mboxq->vport; 3204 struct lpfc_nodelist *ndlp; 3205 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 3206 3207 if (mboxq->u.mb.mbxStatus) { 3208 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 3209 "2609 Init VPI mailbox failed 0x%x\n", 3210 mboxq->u.mb.mbxStatus); 3211 mempool_free(mboxq, phba->mbox_mem_pool); 3212 lpfc_vport_set_state(vport, FC_VPORT_FAILED); 3213 return; 3214 } 3215 spin_lock_irq(shost->host_lock); 3216 vport->fc_flag &= ~FC_VPORT_NEEDS_INIT_VPI; 3217 spin_unlock_irq(shost->host_lock); 3218 3219 /* If this port is physical port or FDISC is done, do reg_vpi */ 3220 if ((phba->pport == vport) || (vport->port_state == LPFC_FDISC)) { 3221 ndlp = lpfc_findnode_did(vport, Fabric_DID); 3222 if (!ndlp) 3223 lpfc_printf_vlog(vport, KERN_ERR, 3224 LOG_TRACE_EVENT, 3225 "2731 Cannot find fabric " 3226 "controller node\n"); 3227 else 3228 lpfc_register_new_vport(phba, vport, ndlp); 3229 mempool_free(mboxq, phba->mbox_mem_pool); 3230 return; 3231 } 3232 3233 if (phba->link_flag & LS_NPIV_FAB_SUPPORTED) 3234 lpfc_initial_fdisc(vport); 3235 else { 3236 lpfc_vport_set_state(vport, FC_VPORT_NO_FABRIC_SUPP); 3237 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 3238 "2606 No NPIV Fabric support\n"); 3239 } 3240 mempool_free(mboxq, phba->mbox_mem_pool); 3241 return; 3242 } 3243 3244 /** 3245 * lpfc_issue_init_vpi - Issue init_vpi mailbox command. 3246 * @vport: pointer to lpfc_vport data structure. 3247 * 3248 * This function issue a init_vpi mailbox command to initialize 3249 * VPI for the vport. 3250 */ 3251 void 3252 lpfc_issue_init_vpi(struct lpfc_vport *vport) 3253 { 3254 LPFC_MBOXQ_t *mboxq; 3255 int rc, vpi; 3256 3257 if ((vport->port_type != LPFC_PHYSICAL_PORT) && (!vport->vpi)) { 3258 vpi = lpfc_alloc_vpi(vport->phba); 3259 if (!vpi) { 3260 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 3261 "3303 Failed to obtain vport vpi\n"); 3262 lpfc_vport_set_state(vport, FC_VPORT_FAILED); 3263 return; 3264 } 3265 vport->vpi = vpi; 3266 } 3267 3268 mboxq = mempool_alloc(vport->phba->mbox_mem_pool, GFP_KERNEL); 3269 if (!mboxq) { 3270 lpfc_printf_vlog(vport, KERN_ERR, 3271 LOG_TRACE_EVENT, "2607 Failed to allocate " 3272 "init_vpi mailbox\n"); 3273 return; 3274 } 3275 lpfc_init_vpi(vport->phba, mboxq, vport->vpi); 3276 mboxq->vport = vport; 3277 mboxq->mbox_cmpl = lpfc_init_vpi_cmpl; 3278 rc = lpfc_sli_issue_mbox(vport->phba, mboxq, MBX_NOWAIT); 3279 if (rc == MBX_NOT_FINISHED) { 3280 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 3281 "2608 Failed to issue init_vpi mailbox\n"); 3282 mempool_free(mboxq, vport->phba->mbox_mem_pool); 3283 } 3284 } 3285 3286 /** 3287 * lpfc_start_fdiscs - send fdiscs for each vports on this port. 3288 * @phba: pointer to lpfc hba data structure. 3289 * 3290 * This function loops through the list of vports on the @phba and issues an 3291 * FDISC if possible. 3292 */ 3293 void 3294 lpfc_start_fdiscs(struct lpfc_hba *phba) 3295 { 3296 struct lpfc_vport **vports; 3297 int i; 3298 3299 vports = lpfc_create_vport_work_array(phba); 3300 if (vports != NULL) { 3301 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) { 3302 if (vports[i]->port_type == LPFC_PHYSICAL_PORT) 3303 continue; 3304 /* There are no vpi for this vport */ 3305 if (vports[i]->vpi > phba->max_vpi) { 3306 lpfc_vport_set_state(vports[i], 3307 FC_VPORT_FAILED); 3308 continue; 3309 } 3310 if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) { 3311 lpfc_vport_set_state(vports[i], 3312 FC_VPORT_LINKDOWN); 3313 continue; 3314 } 3315 if (vports[i]->fc_flag & FC_VPORT_NEEDS_INIT_VPI) { 3316 lpfc_issue_init_vpi(vports[i]); 3317 continue; 3318 } 3319 if (phba->link_flag & LS_NPIV_FAB_SUPPORTED) 3320 lpfc_initial_fdisc(vports[i]); 3321 else { 3322 lpfc_vport_set_state(vports[i], 3323 FC_VPORT_NO_FABRIC_SUPP); 3324 lpfc_printf_vlog(vports[i], KERN_ERR, 3325 LOG_TRACE_EVENT, 3326 "0259 No NPIV " 3327 "Fabric support\n"); 3328 } 3329 } 3330 } 3331 lpfc_destroy_vport_work_array(phba, vports); 3332 } 3333 3334 void 3335 lpfc_mbx_cmpl_reg_vfi(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq) 3336 { 3337 struct lpfc_vport *vport = mboxq->vport; 3338 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 3339 3340 /* 3341 * VFI not supported for interface type 0, so ignore any mailbox 3342 * error (except VFI in use) and continue with the discovery. 3343 */ 3344 if (mboxq->u.mb.mbxStatus && 3345 (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) != 3346 LPFC_SLI_INTF_IF_TYPE_0) && 3347 mboxq->u.mb.mbxStatus != MBX_VFI_IN_USE) { 3348 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 3349 "2018 REG_VFI mbxStatus error x%x " 3350 "HBA state x%x\n", 3351 mboxq->u.mb.mbxStatus, vport->port_state); 3352 if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) { 3353 /* FLOGI failed, use loop map to make discovery list */ 3354 lpfc_disc_list_loopmap(vport); 3355 /* Start discovery */ 3356 lpfc_disc_start(vport); 3357 goto out_free_mem; 3358 } 3359 lpfc_vport_set_state(vport, FC_VPORT_FAILED); 3360 goto out_free_mem; 3361 } 3362 3363 /* If the VFI is already registered, there is nothing else to do 3364 * Unless this was a VFI update and we are in PT2PT mode, then 3365 * we should drop through to set the port state to ready. 3366 */ 3367 if (vport->fc_flag & FC_VFI_REGISTERED) 3368 if (!(phba->sli_rev == LPFC_SLI_REV4 && 3369 vport->fc_flag & FC_PT2PT)) 3370 goto out_free_mem; 3371 3372 /* The VPI is implicitly registered when the VFI is registered */ 3373 spin_lock_irq(shost->host_lock); 3374 vport->vpi_state |= LPFC_VPI_REGISTERED; 3375 vport->fc_flag |= FC_VFI_REGISTERED; 3376 vport->fc_flag &= ~FC_VPORT_NEEDS_REG_VPI; 3377 vport->fc_flag &= ~FC_VPORT_NEEDS_INIT_VPI; 3378 spin_unlock_irq(shost->host_lock); 3379 3380 /* In case SLI4 FC loopback test, we are ready */ 3381 if ((phba->sli_rev == LPFC_SLI_REV4) && 3382 (phba->link_flag & LS_LOOPBACK_MODE)) { 3383 phba->link_state = LPFC_HBA_READY; 3384 goto out_free_mem; 3385 } 3386 3387 lpfc_printf_vlog(vport, KERN_INFO, LOG_SLI, 3388 "3313 cmpl reg vfi port_state:%x fc_flag:%x myDid:%x " 3389 "alpacnt:%d LinkState:%x topology:%x\n", 3390 vport->port_state, vport->fc_flag, vport->fc_myDID, 3391 vport->phba->alpa_map[0], 3392 phba->link_state, phba->fc_topology); 3393 3394 if (vport->port_state == LPFC_FABRIC_CFG_LINK) { 3395 /* 3396 * For private loop or for NPort pt2pt, 3397 * just start discovery and we are done. 3398 */ 3399 if ((vport->fc_flag & FC_PT2PT) || 3400 ((phba->fc_topology == LPFC_TOPOLOGY_LOOP) && 3401 !(vport->fc_flag & FC_PUBLIC_LOOP))) { 3402 3403 /* Use loop map to make discovery list */ 3404 lpfc_disc_list_loopmap(vport); 3405 /* Start discovery */ 3406 if (vport->fc_flag & FC_PT2PT) 3407 vport->port_state = LPFC_VPORT_READY; 3408 else 3409 lpfc_disc_start(vport); 3410 } else { 3411 lpfc_start_fdiscs(phba); 3412 lpfc_do_scr_ns_plogi(phba, vport); 3413 } 3414 } 3415 3416 out_free_mem: 3417 lpfc_mbox_rsrc_cleanup(phba, mboxq, MBOX_THD_UNLOCKED); 3418 } 3419 3420 static void 3421 lpfc_mbx_cmpl_read_sparam(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 3422 { 3423 MAILBOX_t *mb = &pmb->u.mb; 3424 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *)pmb->ctx_buf; 3425 struct lpfc_vport *vport = pmb->vport; 3426 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 3427 struct serv_parm *sp = &vport->fc_sparam; 3428 uint32_t ed_tov; 3429 3430 /* Check for error */ 3431 if (mb->mbxStatus) { 3432 /* READ_SPARAM mbox error <mbxStatus> state <hba_state> */ 3433 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 3434 "0319 READ_SPARAM mbxStatus error x%x " 3435 "hba state x%x>\n", 3436 mb->mbxStatus, vport->port_state); 3437 lpfc_linkdown(phba); 3438 goto out; 3439 } 3440 3441 memcpy((uint8_t *) &vport->fc_sparam, (uint8_t *) mp->virt, 3442 sizeof (struct serv_parm)); 3443 3444 ed_tov = be32_to_cpu(sp->cmn.e_d_tov); 3445 if (sp->cmn.edtovResolution) /* E_D_TOV ticks are in nanoseconds */ 3446 ed_tov = (ed_tov + 999999) / 1000000; 3447 3448 phba->fc_edtov = ed_tov; 3449 phba->fc_ratov = (2 * ed_tov) / 1000; 3450 if (phba->fc_ratov < FF_DEF_RATOV) { 3451 /* RA_TOV should be atleast 10sec for initial flogi */ 3452 phba->fc_ratov = FF_DEF_RATOV; 3453 } 3454 3455 lpfc_update_vport_wwn(vport); 3456 fc_host_port_name(shost) = wwn_to_u64(vport->fc_portname.u.wwn); 3457 if (vport->port_type == LPFC_PHYSICAL_PORT) { 3458 memcpy(&phba->wwnn, &vport->fc_nodename, sizeof(phba->wwnn)); 3459 memcpy(&phba->wwpn, &vport->fc_portname, sizeof(phba->wwnn)); 3460 } 3461 3462 lpfc_mbox_rsrc_cleanup(phba, pmb, MBOX_THD_UNLOCKED); 3463 3464 /* Check if sending the FLOGI is being deferred to after we get 3465 * up to date CSPs from MBX_READ_SPARAM. 3466 */ 3467 if (phba->hba_flag & HBA_DEFER_FLOGI) { 3468 lpfc_initial_flogi(vport); 3469 phba->hba_flag &= ~HBA_DEFER_FLOGI; 3470 } 3471 return; 3472 3473 out: 3474 lpfc_mbox_rsrc_cleanup(phba, pmb, MBOX_THD_UNLOCKED); 3475 lpfc_issue_clear_la(phba, vport); 3476 } 3477 3478 static void 3479 lpfc_mbx_process_link_up(struct lpfc_hba *phba, struct lpfc_mbx_read_top *la) 3480 { 3481 struct lpfc_vport *vport = phba->pport; 3482 LPFC_MBOXQ_t *sparam_mbox, *cfglink_mbox = NULL; 3483 struct Scsi_Host *shost; 3484 int i; 3485 int rc; 3486 struct fcf_record *fcf_record; 3487 uint32_t fc_flags = 0; 3488 unsigned long iflags; 3489 3490 spin_lock_irqsave(&phba->hbalock, iflags); 3491 phba->fc_linkspeed = bf_get(lpfc_mbx_read_top_link_spd, la); 3492 3493 if (!(phba->hba_flag & HBA_FCOE_MODE)) { 3494 switch (bf_get(lpfc_mbx_read_top_link_spd, la)) { 3495 case LPFC_LINK_SPEED_1GHZ: 3496 case LPFC_LINK_SPEED_2GHZ: 3497 case LPFC_LINK_SPEED_4GHZ: 3498 case LPFC_LINK_SPEED_8GHZ: 3499 case LPFC_LINK_SPEED_10GHZ: 3500 case LPFC_LINK_SPEED_16GHZ: 3501 case LPFC_LINK_SPEED_32GHZ: 3502 case LPFC_LINK_SPEED_64GHZ: 3503 case LPFC_LINK_SPEED_128GHZ: 3504 case LPFC_LINK_SPEED_256GHZ: 3505 break; 3506 default: 3507 phba->fc_linkspeed = LPFC_LINK_SPEED_UNKNOWN; 3508 break; 3509 } 3510 } 3511 3512 if (phba->fc_topology && 3513 phba->fc_topology != bf_get(lpfc_mbx_read_top_topology, la)) { 3514 lpfc_printf_log(phba, KERN_WARNING, LOG_SLI, 3515 "3314 Toplogy changed was 0x%x is 0x%x\n", 3516 phba->fc_topology, 3517 bf_get(lpfc_mbx_read_top_topology, la)); 3518 phba->fc_topology_changed = 1; 3519 } 3520 3521 phba->fc_topology = bf_get(lpfc_mbx_read_top_topology, la); 3522 phba->link_flag &= ~(LS_NPIV_FAB_SUPPORTED | LS_CT_VEN_RPA); 3523 3524 shost = lpfc_shost_from_vport(vport); 3525 if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) { 3526 phba->sli3_options &= ~LPFC_SLI3_NPIV_ENABLED; 3527 3528 /* if npiv is enabled and this adapter supports npiv log 3529 * a message that npiv is not supported in this topology 3530 */ 3531 if (phba->cfg_enable_npiv && phba->max_vpi) 3532 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT, 3533 "1309 Link Up Event npiv not supported in loop " 3534 "topology\n"); 3535 /* Get Loop Map information */ 3536 if (bf_get(lpfc_mbx_read_top_il, la)) 3537 fc_flags |= FC_LBIT; 3538 3539 vport->fc_myDID = bf_get(lpfc_mbx_read_top_alpa_granted, la); 3540 i = la->lilpBde64.tus.f.bdeSize; 3541 3542 if (i == 0) { 3543 phba->alpa_map[0] = 0; 3544 } else { 3545 if (vport->cfg_log_verbose & LOG_LINK_EVENT) { 3546 int numalpa, j, k; 3547 union { 3548 uint8_t pamap[16]; 3549 struct { 3550 uint32_t wd1; 3551 uint32_t wd2; 3552 uint32_t wd3; 3553 uint32_t wd4; 3554 } pa; 3555 } un; 3556 numalpa = phba->alpa_map[0]; 3557 j = 0; 3558 while (j < numalpa) { 3559 memset(un.pamap, 0, 16); 3560 for (k = 1; j < numalpa; k++) { 3561 un.pamap[k - 1] = 3562 phba->alpa_map[j + 1]; 3563 j++; 3564 if (k == 16) 3565 break; 3566 } 3567 /* Link Up Event ALPA map */ 3568 lpfc_printf_log(phba, 3569 KERN_WARNING, 3570 LOG_LINK_EVENT, 3571 "1304 Link Up Event " 3572 "ALPA map Data: x%x " 3573 "x%x x%x x%x\n", 3574 un.pa.wd1, un.pa.wd2, 3575 un.pa.wd3, un.pa.wd4); 3576 } 3577 } 3578 } 3579 } else { 3580 if (!(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)) { 3581 if (phba->max_vpi && phba->cfg_enable_npiv && 3582 (phba->sli_rev >= LPFC_SLI_REV3)) 3583 phba->sli3_options |= LPFC_SLI3_NPIV_ENABLED; 3584 } 3585 vport->fc_myDID = phba->fc_pref_DID; 3586 fc_flags |= FC_LBIT; 3587 } 3588 spin_unlock_irqrestore(&phba->hbalock, iflags); 3589 3590 if (fc_flags) { 3591 spin_lock_irqsave(shost->host_lock, iflags); 3592 vport->fc_flag |= fc_flags; 3593 spin_unlock_irqrestore(shost->host_lock, iflags); 3594 } 3595 3596 lpfc_linkup(phba); 3597 sparam_mbox = NULL; 3598 3599 sparam_mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 3600 if (!sparam_mbox) 3601 goto out; 3602 3603 rc = lpfc_read_sparam(phba, sparam_mbox, 0); 3604 if (rc) { 3605 mempool_free(sparam_mbox, phba->mbox_mem_pool); 3606 goto out; 3607 } 3608 sparam_mbox->vport = vport; 3609 sparam_mbox->mbox_cmpl = lpfc_mbx_cmpl_read_sparam; 3610 rc = lpfc_sli_issue_mbox(phba, sparam_mbox, MBX_NOWAIT); 3611 if (rc == MBX_NOT_FINISHED) { 3612 lpfc_mbox_rsrc_cleanup(phba, sparam_mbox, MBOX_THD_UNLOCKED); 3613 goto out; 3614 } 3615 3616 if (!(phba->hba_flag & HBA_FCOE_MODE)) { 3617 cfglink_mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 3618 if (!cfglink_mbox) 3619 goto out; 3620 vport->port_state = LPFC_LOCAL_CFG_LINK; 3621 lpfc_config_link(phba, cfglink_mbox); 3622 cfglink_mbox->vport = vport; 3623 cfglink_mbox->mbox_cmpl = lpfc_mbx_cmpl_local_config_link; 3624 rc = lpfc_sli_issue_mbox(phba, cfglink_mbox, MBX_NOWAIT); 3625 if (rc == MBX_NOT_FINISHED) { 3626 mempool_free(cfglink_mbox, phba->mbox_mem_pool); 3627 goto out; 3628 } 3629 } else { 3630 vport->port_state = LPFC_VPORT_UNKNOWN; 3631 /* 3632 * Add the driver's default FCF record at FCF index 0 now. This 3633 * is phase 1 implementation that support FCF index 0 and driver 3634 * defaults. 3635 */ 3636 if (!(phba->hba_flag & HBA_FIP_SUPPORT)) { 3637 fcf_record = kzalloc(sizeof(struct fcf_record), 3638 GFP_KERNEL); 3639 if (unlikely(!fcf_record)) { 3640 lpfc_printf_log(phba, KERN_ERR, 3641 LOG_TRACE_EVENT, 3642 "2554 Could not allocate memory for " 3643 "fcf record\n"); 3644 rc = -ENODEV; 3645 goto out; 3646 } 3647 3648 lpfc_sli4_build_dflt_fcf_record(phba, fcf_record, 3649 LPFC_FCOE_FCF_DEF_INDEX); 3650 rc = lpfc_sli4_add_fcf_record(phba, fcf_record); 3651 if (unlikely(rc)) { 3652 lpfc_printf_log(phba, KERN_ERR, 3653 LOG_TRACE_EVENT, 3654 "2013 Could not manually add FCF " 3655 "record 0, status %d\n", rc); 3656 rc = -ENODEV; 3657 kfree(fcf_record); 3658 goto out; 3659 } 3660 kfree(fcf_record); 3661 } 3662 /* 3663 * The driver is expected to do FIP/FCF. Call the port 3664 * and get the FCF Table. 3665 */ 3666 spin_lock_irqsave(&phba->hbalock, iflags); 3667 if (phba->hba_flag & FCF_TS_INPROG) { 3668 spin_unlock_irqrestore(&phba->hbalock, iflags); 3669 return; 3670 } 3671 /* This is the initial FCF discovery scan */ 3672 phba->fcf.fcf_flag |= FCF_INIT_DISC; 3673 spin_unlock_irqrestore(&phba->hbalock, iflags); 3674 lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY, 3675 "2778 Start FCF table scan at linkup\n"); 3676 rc = lpfc_sli4_fcf_scan_read_fcf_rec(phba, 3677 LPFC_FCOE_FCF_GET_FIRST); 3678 if (rc) { 3679 spin_lock_irqsave(&phba->hbalock, iflags); 3680 phba->fcf.fcf_flag &= ~FCF_INIT_DISC; 3681 spin_unlock_irqrestore(&phba->hbalock, iflags); 3682 goto out; 3683 } 3684 /* Reset FCF roundrobin bmask for new discovery */ 3685 lpfc_sli4_clear_fcf_rr_bmask(phba); 3686 } 3687 3688 /* Prepare for LINK up registrations */ 3689 memset(phba->os_host_name, 0, sizeof(phba->os_host_name)); 3690 scnprintf(phba->os_host_name, sizeof(phba->os_host_name), "%s", 3691 init_utsname()->nodename); 3692 return; 3693 out: 3694 lpfc_vport_set_state(vport, FC_VPORT_FAILED); 3695 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 3696 "0263 Discovery Mailbox error: state: 0x%x : x%px x%px\n", 3697 vport->port_state, sparam_mbox, cfglink_mbox); 3698 lpfc_issue_clear_la(phba, vport); 3699 return; 3700 } 3701 3702 static void 3703 lpfc_enable_la(struct lpfc_hba *phba) 3704 { 3705 uint32_t control; 3706 struct lpfc_sli *psli = &phba->sli; 3707 spin_lock_irq(&phba->hbalock); 3708 psli->sli_flag |= LPFC_PROCESS_LA; 3709 if (phba->sli_rev <= LPFC_SLI_REV3) { 3710 control = readl(phba->HCregaddr); 3711 control |= HC_LAINT_ENA; 3712 writel(control, phba->HCregaddr); 3713 readl(phba->HCregaddr); /* flush */ 3714 } 3715 spin_unlock_irq(&phba->hbalock); 3716 } 3717 3718 static void 3719 lpfc_mbx_issue_link_down(struct lpfc_hba *phba) 3720 { 3721 lpfc_linkdown(phba); 3722 lpfc_enable_la(phba); 3723 lpfc_unregister_unused_fcf(phba); 3724 /* turn on Link Attention interrupts - no CLEAR_LA needed */ 3725 } 3726 3727 3728 /* 3729 * This routine handles processing a READ_TOPOLOGY mailbox 3730 * command upon completion. It is setup in the LPFC_MBOXQ 3731 * as the completion routine when the command is 3732 * handed off to the SLI layer. SLI4 only. 3733 */ 3734 void 3735 lpfc_mbx_cmpl_read_topology(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 3736 { 3737 struct lpfc_vport *vport = pmb->vport; 3738 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 3739 struct lpfc_mbx_read_top *la; 3740 struct lpfc_sli_ring *pring; 3741 MAILBOX_t *mb = &pmb->u.mb; 3742 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *)(pmb->ctx_buf); 3743 uint8_t attn_type; 3744 unsigned long iflags; 3745 3746 /* Unblock ELS traffic */ 3747 pring = lpfc_phba_elsring(phba); 3748 if (pring) 3749 pring->flag &= ~LPFC_STOP_IOCB_EVENT; 3750 3751 /* Check for error */ 3752 if (mb->mbxStatus) { 3753 lpfc_printf_log(phba, KERN_INFO, LOG_LINK_EVENT, 3754 "1307 READ_LA mbox error x%x state x%x\n", 3755 mb->mbxStatus, vport->port_state); 3756 lpfc_mbx_issue_link_down(phba); 3757 phba->link_state = LPFC_HBA_ERROR; 3758 goto lpfc_mbx_cmpl_read_topology_free_mbuf; 3759 } 3760 3761 la = (struct lpfc_mbx_read_top *) &pmb->u.mb.un.varReadTop; 3762 attn_type = bf_get(lpfc_mbx_read_top_att_type, la); 3763 3764 memcpy(&phba->alpa_map[0], mp->virt, 128); 3765 3766 spin_lock_irqsave(shost->host_lock, iflags); 3767 if (bf_get(lpfc_mbx_read_top_pb, la)) 3768 vport->fc_flag |= FC_BYPASSED_MODE; 3769 else 3770 vport->fc_flag &= ~FC_BYPASSED_MODE; 3771 spin_unlock_irqrestore(shost->host_lock, iflags); 3772 3773 if (phba->fc_eventTag <= la->eventTag) { 3774 phba->fc_stat.LinkMultiEvent++; 3775 if (attn_type == LPFC_ATT_LINK_UP) 3776 if (phba->fc_eventTag != 0) 3777 lpfc_linkdown(phba); 3778 } 3779 3780 phba->fc_eventTag = la->eventTag; 3781 phba->link_events++; 3782 if (attn_type == LPFC_ATT_LINK_UP) { 3783 phba->fc_stat.LinkUp++; 3784 if (phba->link_flag & LS_LOOPBACK_MODE) { 3785 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT, 3786 "1306 Link Up Event in loop back mode " 3787 "x%x received Data: x%x x%x x%x x%x\n", 3788 la->eventTag, phba->fc_eventTag, 3789 bf_get(lpfc_mbx_read_top_alpa_granted, 3790 la), 3791 bf_get(lpfc_mbx_read_top_link_spd, la), 3792 phba->alpa_map[0]); 3793 } else { 3794 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT, 3795 "1303 Link Up Event x%x received " 3796 "Data: x%x x%x x%x x%x x%x\n", 3797 la->eventTag, phba->fc_eventTag, 3798 bf_get(lpfc_mbx_read_top_alpa_granted, 3799 la), 3800 bf_get(lpfc_mbx_read_top_link_spd, la), 3801 phba->alpa_map[0], 3802 bf_get(lpfc_mbx_read_top_fa, la)); 3803 } 3804 lpfc_mbx_process_link_up(phba, la); 3805 3806 if (phba->cmf_active_mode != LPFC_CFG_OFF) 3807 lpfc_cmf_signal_init(phba); 3808 3809 if (phba->lmt & LMT_64Gb) 3810 lpfc_read_lds_params(phba); 3811 3812 } else if (attn_type == LPFC_ATT_LINK_DOWN || 3813 attn_type == LPFC_ATT_UNEXP_WWPN) { 3814 phba->fc_stat.LinkDown++; 3815 if (phba->link_flag & LS_LOOPBACK_MODE) 3816 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT, 3817 "1308 Link Down Event in loop back mode " 3818 "x%x received " 3819 "Data: x%x x%x x%x\n", 3820 la->eventTag, phba->fc_eventTag, 3821 phba->pport->port_state, vport->fc_flag); 3822 else if (attn_type == LPFC_ATT_UNEXP_WWPN) 3823 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT, 3824 "1313 Link Down Unexpected FA WWPN Event x%x " 3825 "received Data: x%x x%x x%x x%x\n", 3826 la->eventTag, phba->fc_eventTag, 3827 phba->pport->port_state, vport->fc_flag, 3828 bf_get(lpfc_mbx_read_top_fa, la)); 3829 else 3830 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT, 3831 "1305 Link Down Event x%x received " 3832 "Data: x%x x%x x%x x%x\n", 3833 la->eventTag, phba->fc_eventTag, 3834 phba->pport->port_state, vport->fc_flag, 3835 bf_get(lpfc_mbx_read_top_fa, la)); 3836 lpfc_mbx_issue_link_down(phba); 3837 } 3838 3839 if ((phba->sli_rev < LPFC_SLI_REV4) && 3840 bf_get(lpfc_mbx_read_top_fa, la)) 3841 lpfc_printf_log(phba, KERN_INFO, LOG_LINK_EVENT, 3842 "1311 fa %d\n", 3843 bf_get(lpfc_mbx_read_top_fa, la)); 3844 3845 lpfc_mbx_cmpl_read_topology_free_mbuf: 3846 lpfc_mbox_rsrc_cleanup(phba, pmb, MBOX_THD_UNLOCKED); 3847 } 3848 3849 /* 3850 * This routine handles processing a REG_LOGIN mailbox 3851 * command upon completion. It is setup in the LPFC_MBOXQ 3852 * as the completion routine when the command is 3853 * handed off to the SLI layer. 3854 */ 3855 void 3856 lpfc_mbx_cmpl_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 3857 { 3858 struct lpfc_vport *vport = pmb->vport; 3859 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *)pmb->ctx_buf; 3860 struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *)pmb->ctx_ndlp; 3861 3862 /* The driver calls the state machine with the pmb pointer 3863 * but wants to make sure a stale ctx_buf isn't acted on. 3864 * The ctx_buf is restored later and cleaned up. 3865 */ 3866 pmb->ctx_buf = NULL; 3867 pmb->ctx_ndlp = NULL; 3868 3869 lpfc_printf_vlog(vport, KERN_INFO, LOG_SLI | LOG_NODE | LOG_DISCOVERY, 3870 "0002 rpi:%x DID:%x flg:%x %d x%px\n", 3871 ndlp->nlp_rpi, ndlp->nlp_DID, ndlp->nlp_flag, 3872 kref_read(&ndlp->kref), 3873 ndlp); 3874 if (ndlp->nlp_flag & NLP_REG_LOGIN_SEND) 3875 ndlp->nlp_flag &= ~NLP_REG_LOGIN_SEND; 3876 3877 if (ndlp->nlp_flag & NLP_IGNR_REG_CMPL || 3878 ndlp->nlp_state != NLP_STE_REG_LOGIN_ISSUE) { 3879 /* We rcvd a rscn after issuing this 3880 * mbox reg login, we may have cycled 3881 * back through the state and be 3882 * back at reg login state so this 3883 * mbox needs to be ignored becase 3884 * there is another reg login in 3885 * process. 3886 */ 3887 spin_lock_irq(&ndlp->lock); 3888 ndlp->nlp_flag &= ~NLP_IGNR_REG_CMPL; 3889 spin_unlock_irq(&ndlp->lock); 3890 3891 /* 3892 * We cannot leave the RPI registered because 3893 * if we go thru discovery again for this ndlp 3894 * a subsequent REG_RPI will fail. 3895 */ 3896 ndlp->nlp_flag |= NLP_RPI_REGISTERED; 3897 lpfc_unreg_rpi(vport, ndlp); 3898 } 3899 3900 /* Call state machine */ 3901 lpfc_disc_state_machine(vport, ndlp, pmb, NLP_EVT_CMPL_REG_LOGIN); 3902 pmb->ctx_buf = mp; 3903 lpfc_mbox_rsrc_cleanup(phba, pmb, MBOX_THD_UNLOCKED); 3904 3905 /* decrement the node reference count held for this callback 3906 * function. 3907 */ 3908 lpfc_nlp_put(ndlp); 3909 3910 return; 3911 } 3912 3913 static void 3914 lpfc_mbx_cmpl_unreg_vpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 3915 { 3916 MAILBOX_t *mb = &pmb->u.mb; 3917 struct lpfc_vport *vport = pmb->vport; 3918 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 3919 3920 switch (mb->mbxStatus) { 3921 case 0x0011: 3922 case 0x0020: 3923 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE, 3924 "0911 cmpl_unreg_vpi, mb status = 0x%x\n", 3925 mb->mbxStatus); 3926 break; 3927 /* If VPI is busy, reset the HBA */ 3928 case 0x9700: 3929 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 3930 "2798 Unreg_vpi failed vpi 0x%x, mb status = 0x%x\n", 3931 vport->vpi, mb->mbxStatus); 3932 if (!(phba->pport->load_flag & FC_UNLOADING)) 3933 lpfc_workq_post_event(phba, NULL, NULL, 3934 LPFC_EVT_RESET_HBA); 3935 } 3936 spin_lock_irq(shost->host_lock); 3937 vport->vpi_state &= ~LPFC_VPI_REGISTERED; 3938 vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI; 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 ((vport->load_flag & FC_UNLOADING) && (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 spin_lock_irq(shost->host_lock); 3990 vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP); 3991 spin_unlock_irq(shost->host_lock); 3992 vport->fc_myDID = 0; 3993 3994 if ((vport->cfg_enable_fc4_type == LPFC_ENABLE_BOTH) || 3995 (vport->cfg_enable_fc4_type == LPFC_ENABLE_NVME)) { 3996 if (phba->nvmet_support) 3997 lpfc_nvmet_update_targetport(phba); 3998 else 3999 lpfc_nvme_update_localport(vport); 4000 } 4001 goto out; 4002 } 4003 4004 spin_lock_irq(shost->host_lock); 4005 vport->vpi_state |= LPFC_VPI_REGISTERED; 4006 vport->fc_flag &= ~FC_VPORT_NEEDS_REG_VPI; 4007 spin_unlock_irq(shost->host_lock); 4008 vport->num_disc_nodes = 0; 4009 /* go thru NPR list and issue ELS PLOGIs */ 4010 if (vport->fc_npr_cnt) 4011 lpfc_els_disc_plogi(vport); 4012 4013 if (!vport->num_disc_nodes) { 4014 spin_lock_irq(shost->host_lock); 4015 vport->fc_flag &= ~FC_NDISC_ACTIVE; 4016 spin_unlock_irq(shost->host_lock); 4017 lpfc_can_disctmo(vport); 4018 } 4019 vport->port_state = LPFC_VPORT_READY; 4020 4021 out: 4022 mempool_free(pmb, phba->mbox_mem_pool); 4023 return; 4024 } 4025 4026 /** 4027 * lpfc_create_static_vport - Read HBA config region to create static vports. 4028 * @phba: pointer to lpfc hba data structure. 4029 * 4030 * This routine issue a DUMP mailbox command for config region 22 to get 4031 * the list of static vports to be created. The function create vports 4032 * based on the information returned from the HBA. 4033 **/ 4034 void 4035 lpfc_create_static_vport(struct lpfc_hba *phba) 4036 { 4037 LPFC_MBOXQ_t *pmb = NULL; 4038 MAILBOX_t *mb; 4039 struct static_vport_info *vport_info; 4040 int mbx_wait_rc = 0, i; 4041 struct fc_vport_identifiers vport_id; 4042 struct fc_vport *new_fc_vport; 4043 struct Scsi_Host *shost; 4044 struct lpfc_vport *vport; 4045 uint16_t offset = 0; 4046 uint8_t *vport_buff; 4047 struct lpfc_dmabuf *mp; 4048 uint32_t byte_count = 0; 4049 4050 pmb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 4051 if (!pmb) { 4052 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 4053 "0542 lpfc_create_static_vport failed to" 4054 " allocate mailbox memory\n"); 4055 return; 4056 } 4057 memset(pmb, 0, sizeof(LPFC_MBOXQ_t)); 4058 mb = &pmb->u.mb; 4059 4060 vport_info = kzalloc(sizeof(struct static_vport_info), GFP_KERNEL); 4061 if (!vport_info) { 4062 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 4063 "0543 lpfc_create_static_vport failed to" 4064 " allocate vport_info\n"); 4065 mempool_free(pmb, phba->mbox_mem_pool); 4066 return; 4067 } 4068 4069 vport_buff = (uint8_t *) vport_info; 4070 do { 4071 /* While loop iteration forces a free dma buffer from 4072 * the previous loop because the mbox is reused and 4073 * the dump routine is a single-use construct. 4074 */ 4075 if (pmb->ctx_buf) { 4076 mp = (struct lpfc_dmabuf *)pmb->ctx_buf; 4077 lpfc_mbuf_free(phba, mp->virt, mp->phys); 4078 kfree(mp); 4079 pmb->ctx_buf = NULL; 4080 } 4081 if (lpfc_dump_static_vport(phba, pmb, offset)) 4082 goto out; 4083 4084 pmb->vport = phba->pport; 4085 mbx_wait_rc = lpfc_sli_issue_mbox_wait(phba, pmb, 4086 LPFC_MBOX_TMO); 4087 4088 if ((mbx_wait_rc != MBX_SUCCESS) || mb->mbxStatus) { 4089 lpfc_printf_log(phba, KERN_WARNING, LOG_INIT, 4090 "0544 lpfc_create_static_vport failed to" 4091 " issue dump mailbox command ret 0x%x " 4092 "status 0x%x\n", 4093 mbx_wait_rc, mb->mbxStatus); 4094 goto out; 4095 } 4096 4097 if (phba->sli_rev == LPFC_SLI_REV4) { 4098 byte_count = pmb->u.mqe.un.mb_words[5]; 4099 mp = (struct lpfc_dmabuf *)pmb->ctx_buf; 4100 if (byte_count > sizeof(struct static_vport_info) - 4101 offset) 4102 byte_count = sizeof(struct static_vport_info) 4103 - offset; 4104 memcpy(vport_buff + offset, mp->virt, byte_count); 4105 offset += byte_count; 4106 } else { 4107 if (mb->un.varDmp.word_cnt > 4108 sizeof(struct static_vport_info) - offset) 4109 mb->un.varDmp.word_cnt = 4110 sizeof(struct static_vport_info) 4111 - offset; 4112 byte_count = mb->un.varDmp.word_cnt; 4113 lpfc_sli_pcimem_bcopy(((uint8_t *)mb) + DMP_RSP_OFFSET, 4114 vport_buff + offset, 4115 byte_count); 4116 4117 offset += byte_count; 4118 } 4119 4120 } while (byte_count && 4121 offset < sizeof(struct static_vport_info)); 4122 4123 4124 if ((le32_to_cpu(vport_info->signature) != VPORT_INFO_SIG) || 4125 ((le32_to_cpu(vport_info->rev) & VPORT_INFO_REV_MASK) 4126 != VPORT_INFO_REV)) { 4127 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 4128 "0545 lpfc_create_static_vport bad" 4129 " information header 0x%x 0x%x\n", 4130 le32_to_cpu(vport_info->signature), 4131 le32_to_cpu(vport_info->rev) & 4132 VPORT_INFO_REV_MASK); 4133 4134 goto out; 4135 } 4136 4137 shost = lpfc_shost_from_vport(phba->pport); 4138 4139 for (i = 0; i < MAX_STATIC_VPORT_COUNT; i++) { 4140 memset(&vport_id, 0, sizeof(vport_id)); 4141 vport_id.port_name = wwn_to_u64(vport_info->vport_list[i].wwpn); 4142 vport_id.node_name = wwn_to_u64(vport_info->vport_list[i].wwnn); 4143 if (!vport_id.port_name || !vport_id.node_name) 4144 continue; 4145 4146 vport_id.roles = FC_PORT_ROLE_FCP_INITIATOR; 4147 vport_id.vport_type = FC_PORTTYPE_NPIV; 4148 vport_id.disable = false; 4149 new_fc_vport = fc_vport_create(shost, 0, &vport_id); 4150 4151 if (!new_fc_vport) { 4152 lpfc_printf_log(phba, KERN_WARNING, LOG_INIT, 4153 "0546 lpfc_create_static_vport failed to" 4154 " create vport\n"); 4155 continue; 4156 } 4157 4158 vport = *(struct lpfc_vport **)new_fc_vport->dd_data; 4159 vport->vport_flag |= STATIC_VPORT; 4160 } 4161 4162 out: 4163 kfree(vport_info); 4164 if (mbx_wait_rc != MBX_TIMEOUT) 4165 lpfc_mbox_rsrc_cleanup(phba, pmb, MBOX_THD_UNLOCKED); 4166 } 4167 4168 /* 4169 * This routine handles processing a Fabric REG_LOGIN mailbox 4170 * command upon completion. It is setup in the LPFC_MBOXQ 4171 * as the completion routine when the command is 4172 * handed off to the SLI layer. 4173 */ 4174 void 4175 lpfc_mbx_cmpl_fabric_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 4176 { 4177 struct lpfc_vport *vport = pmb->vport; 4178 MAILBOX_t *mb = &pmb->u.mb; 4179 struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *)pmb->ctx_ndlp; 4180 struct Scsi_Host *shost; 4181 4182 pmb->ctx_ndlp = NULL; 4183 4184 if (mb->mbxStatus) { 4185 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 4186 "0258 Register Fabric login error: 0x%x\n", 4187 mb->mbxStatus); 4188 lpfc_mbox_rsrc_cleanup(phba, pmb, MBOX_THD_UNLOCKED); 4189 if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) { 4190 /* FLOGI failed, use loop map to make discovery list */ 4191 lpfc_disc_list_loopmap(vport); 4192 4193 /* Start discovery */ 4194 lpfc_disc_start(vport); 4195 /* Decrement the reference count to ndlp after the 4196 * reference to the ndlp are done. 4197 */ 4198 lpfc_nlp_put(ndlp); 4199 return; 4200 } 4201 4202 lpfc_vport_set_state(vport, FC_VPORT_FAILED); 4203 /* Decrement the reference count to ndlp after the reference 4204 * to the ndlp are done. 4205 */ 4206 lpfc_nlp_put(ndlp); 4207 return; 4208 } 4209 4210 if (phba->sli_rev < LPFC_SLI_REV4) 4211 ndlp->nlp_rpi = mb->un.varWords[0]; 4212 ndlp->nlp_flag |= NLP_RPI_REGISTERED; 4213 ndlp->nlp_type |= NLP_FABRIC; 4214 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE); 4215 4216 if (vport->port_state == LPFC_FABRIC_CFG_LINK) { 4217 /* when physical port receive logo donot start 4218 * vport discovery */ 4219 if (!(vport->fc_flag & FC_LOGO_RCVD_DID_CHNG)) 4220 lpfc_start_fdiscs(phba); 4221 else { 4222 shost = lpfc_shost_from_vport(vport); 4223 spin_lock_irq(shost->host_lock); 4224 vport->fc_flag &= ~FC_LOGO_RCVD_DID_CHNG ; 4225 spin_unlock_irq(shost->host_lock); 4226 } 4227 lpfc_do_scr_ns_plogi(phba, vport); 4228 } 4229 4230 lpfc_mbox_rsrc_cleanup(phba, pmb, MBOX_THD_UNLOCKED); 4231 4232 /* Drop the reference count from the mbox at the end after 4233 * all the current reference to the ndlp have been done. 4234 */ 4235 lpfc_nlp_put(ndlp); 4236 return; 4237 } 4238 4239 /* 4240 * This routine will issue a GID_FT for each FC4 Type supported 4241 * by the driver. ALL GID_FTs must complete before discovery is started. 4242 */ 4243 int 4244 lpfc_issue_gidft(struct lpfc_vport *vport) 4245 { 4246 /* Good status, issue CT Request to NameServer */ 4247 if ((vport->cfg_enable_fc4_type == LPFC_ENABLE_BOTH) || 4248 (vport->cfg_enable_fc4_type == LPFC_ENABLE_FCP)) { 4249 if (lpfc_ns_cmd(vport, SLI_CTNS_GID_FT, 0, SLI_CTPT_FCP)) { 4250 /* Cannot issue NameServer FCP Query, so finish up 4251 * discovery 4252 */ 4253 lpfc_printf_vlog(vport, KERN_ERR, 4254 LOG_TRACE_EVENT, 4255 "0604 %s FC TYPE %x %s\n", 4256 "Failed to issue GID_FT to ", 4257 FC_TYPE_FCP, 4258 "Finishing discovery."); 4259 return 0; 4260 } 4261 vport->gidft_inp++; 4262 } 4263 4264 if ((vport->cfg_enable_fc4_type == LPFC_ENABLE_BOTH) || 4265 (vport->cfg_enable_fc4_type == LPFC_ENABLE_NVME)) { 4266 if (lpfc_ns_cmd(vport, SLI_CTNS_GID_FT, 0, SLI_CTPT_NVME)) { 4267 /* Cannot issue NameServer NVME Query, so finish up 4268 * discovery 4269 */ 4270 lpfc_printf_vlog(vport, KERN_ERR, 4271 LOG_TRACE_EVENT, 4272 "0605 %s FC_TYPE %x %s %d\n", 4273 "Failed to issue GID_FT to ", 4274 FC_TYPE_NVME, 4275 "Finishing discovery: gidftinp ", 4276 vport->gidft_inp); 4277 if (vport->gidft_inp == 0) 4278 return 0; 4279 } else 4280 vport->gidft_inp++; 4281 } 4282 return vport->gidft_inp; 4283 } 4284 4285 /** 4286 * lpfc_issue_gidpt - issue a GID_PT for all N_Ports 4287 * @vport: The virtual port for which this call is being executed. 4288 * 4289 * This routine will issue a GID_PT to get a list of all N_Ports 4290 * 4291 * Return value : 4292 * 0 - Failure to issue a GID_PT 4293 * 1 - GID_PT issued 4294 **/ 4295 int 4296 lpfc_issue_gidpt(struct lpfc_vport *vport) 4297 { 4298 /* Good status, issue CT Request to NameServer */ 4299 if (lpfc_ns_cmd(vport, SLI_CTNS_GID_PT, 0, GID_PT_N_PORT)) { 4300 /* Cannot issue NameServer FCP Query, so finish up 4301 * discovery 4302 */ 4303 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 4304 "0606 %s Port TYPE %x %s\n", 4305 "Failed to issue GID_PT to ", 4306 GID_PT_N_PORT, 4307 "Finishing discovery."); 4308 return 0; 4309 } 4310 vport->gidft_inp++; 4311 return 1; 4312 } 4313 4314 /* 4315 * This routine handles processing a NameServer REG_LOGIN mailbox 4316 * command upon completion. It is setup in the LPFC_MBOXQ 4317 * as the completion routine when the command is 4318 * handed off to the SLI layer. 4319 */ 4320 void 4321 lpfc_mbx_cmpl_ns_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 4322 { 4323 MAILBOX_t *mb = &pmb->u.mb; 4324 struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *)pmb->ctx_ndlp; 4325 struct lpfc_vport *vport = pmb->vport; 4326 int rc; 4327 4328 pmb->ctx_ndlp = NULL; 4329 vport->gidft_inp = 0; 4330 4331 if (mb->mbxStatus) { 4332 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 4333 "0260 Register NameServer error: 0x%x\n", 4334 mb->mbxStatus); 4335 4336 out: 4337 /* decrement the node reference count held for this 4338 * callback function. 4339 */ 4340 lpfc_nlp_put(ndlp); 4341 lpfc_mbox_rsrc_cleanup(phba, pmb, MBOX_THD_UNLOCKED); 4342 4343 /* If the node is not registered with the scsi or nvme 4344 * transport, remove the fabric node. The failed reg_login 4345 * is terminal and forces the removal of the last node 4346 * reference. 4347 */ 4348 if (!(ndlp->fc4_xpt_flags & (SCSI_XPT_REGD | NVME_XPT_REGD))) { 4349 spin_lock_irq(&ndlp->lock); 4350 ndlp->nlp_flag &= ~NLP_NPR_2B_DISC; 4351 spin_unlock_irq(&ndlp->lock); 4352 lpfc_nlp_put(ndlp); 4353 } 4354 4355 if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) { 4356 /* 4357 * RegLogin failed, use loop map to make discovery 4358 * list 4359 */ 4360 lpfc_disc_list_loopmap(vport); 4361 4362 /* Start discovery */ 4363 lpfc_disc_start(vport); 4364 return; 4365 } 4366 lpfc_vport_set_state(vport, FC_VPORT_FAILED); 4367 return; 4368 } 4369 4370 if (phba->sli_rev < LPFC_SLI_REV4) 4371 ndlp->nlp_rpi = mb->un.varWords[0]; 4372 ndlp->nlp_flag |= NLP_RPI_REGISTERED; 4373 ndlp->nlp_type |= NLP_FABRIC; 4374 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE); 4375 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE | LOG_DISCOVERY, 4376 "0003 rpi:%x DID:%x flg:%x %d x%px\n", 4377 ndlp->nlp_rpi, ndlp->nlp_DID, ndlp->nlp_flag, 4378 kref_read(&ndlp->kref), 4379 ndlp); 4380 4381 if (vport->port_state < LPFC_VPORT_READY) { 4382 /* Link up discovery requires Fabric registration. */ 4383 lpfc_ns_cmd(vport, SLI_CTNS_RNN_ID, 0, 0); 4384 lpfc_ns_cmd(vport, SLI_CTNS_RSNN_NN, 0, 0); 4385 lpfc_ns_cmd(vport, SLI_CTNS_RSPN_ID, 0, 0); 4386 lpfc_ns_cmd(vport, SLI_CTNS_RFT_ID, 0, 0); 4387 4388 if ((vport->cfg_enable_fc4_type == LPFC_ENABLE_BOTH) || 4389 (vport->cfg_enable_fc4_type == LPFC_ENABLE_FCP)) 4390 lpfc_ns_cmd(vport, SLI_CTNS_RFF_ID, 0, FC_TYPE_FCP); 4391 4392 if ((vport->cfg_enable_fc4_type == LPFC_ENABLE_BOTH) || 4393 (vport->cfg_enable_fc4_type == LPFC_ENABLE_NVME)) 4394 lpfc_ns_cmd(vport, SLI_CTNS_RFF_ID, 0, 4395 FC_TYPE_NVME); 4396 4397 /* Issue SCR just before NameServer GID_FT Query */ 4398 lpfc_issue_els_scr(vport, 0); 4399 4400 /* Link was bounced or a Fabric LOGO occurred. Start EDC 4401 * with initial FW values provided the congestion mode is 4402 * not off. Note that signals may or may not be supported 4403 * by the adapter but FPIN is provided by default for 1 4404 * or both missing signals support. 4405 */ 4406 if (phba->cmf_active_mode != LPFC_CFG_OFF) { 4407 phba->cgn_reg_fpin = phba->cgn_init_reg_fpin; 4408 phba->cgn_reg_signal = phba->cgn_init_reg_signal; 4409 rc = lpfc_issue_els_edc(vport, 0); 4410 lpfc_printf_log(phba, KERN_INFO, 4411 LOG_INIT | LOG_ELS | LOG_DISCOVERY, 4412 "4220 Issue EDC status x%x Data x%x\n", 4413 rc, phba->cgn_init_reg_signal); 4414 } else if (phba->lmt & LMT_64Gb) { 4415 /* may send link fault capability descriptor */ 4416 lpfc_issue_els_edc(vport, 0); 4417 } else { 4418 lpfc_issue_els_rdf(vport, 0); 4419 } 4420 } 4421 4422 vport->fc_ns_retry = 0; 4423 if (lpfc_issue_gidft(vport) == 0) 4424 goto out; 4425 4426 /* 4427 * At this point in time we may need to wait for multiple 4428 * SLI_CTNS_GID_FT CT commands to complete before we start discovery. 4429 * 4430 * decrement the node reference count held for this 4431 * callback function. 4432 */ 4433 lpfc_nlp_put(ndlp); 4434 lpfc_mbox_rsrc_cleanup(phba, pmb, MBOX_THD_UNLOCKED); 4435 return; 4436 } 4437 4438 /* 4439 * This routine handles processing a Fabric Controller REG_LOGIN mailbox 4440 * command upon completion. It is setup in the LPFC_MBOXQ 4441 * as the completion routine when the command is handed off to the SLI layer. 4442 */ 4443 void 4444 lpfc_mbx_cmpl_fc_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 4445 { 4446 struct lpfc_vport *vport = pmb->vport; 4447 MAILBOX_t *mb = &pmb->u.mb; 4448 struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *)pmb->ctx_ndlp; 4449 4450 pmb->ctx_ndlp = NULL; 4451 if (mb->mbxStatus) { 4452 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 4453 "0933 %s: Register FC login error: 0x%x\n", 4454 __func__, mb->mbxStatus); 4455 goto out; 4456 } 4457 4458 lpfc_check_nlp_post_devloss(vport, ndlp); 4459 4460 if (phba->sli_rev < LPFC_SLI_REV4) 4461 ndlp->nlp_rpi = mb->un.varWords[0]; 4462 4463 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE, 4464 "0934 %s: Complete FC x%x RegLogin rpi x%x ste x%x\n", 4465 __func__, ndlp->nlp_DID, ndlp->nlp_rpi, 4466 ndlp->nlp_state); 4467 4468 ndlp->nlp_flag |= NLP_RPI_REGISTERED; 4469 ndlp->nlp_flag &= ~NLP_REG_LOGIN_SEND; 4470 ndlp->nlp_type |= NLP_FABRIC; 4471 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE); 4472 4473 out: 4474 lpfc_mbox_rsrc_cleanup(phba, pmb, MBOX_THD_UNLOCKED); 4475 4476 /* Drop the reference count from the mbox at the end after 4477 * all the current reference to the ndlp have been done. 4478 */ 4479 lpfc_nlp_put(ndlp); 4480 } 4481 4482 static void 4483 lpfc_register_remote_port(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) 4484 { 4485 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 4486 struct fc_rport *rport; 4487 struct lpfc_rport_data *rdata; 4488 struct fc_rport_identifiers rport_ids; 4489 struct lpfc_hba *phba = vport->phba; 4490 unsigned long flags; 4491 4492 if (vport->cfg_enable_fc4_type == LPFC_ENABLE_NVME) 4493 return; 4494 4495 /* Remote port has reappeared. Re-register w/ FC transport */ 4496 rport_ids.node_name = wwn_to_u64(ndlp->nlp_nodename.u.wwn); 4497 rport_ids.port_name = wwn_to_u64(ndlp->nlp_portname.u.wwn); 4498 rport_ids.port_id = ndlp->nlp_DID; 4499 rport_ids.roles = FC_RPORT_ROLE_UNKNOWN; 4500 4501 4502 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT, 4503 "rport add: did:x%x flg:x%x type x%x", 4504 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type); 4505 4506 /* Don't add the remote port if unloading. */ 4507 if (vport->load_flag & FC_UNLOADING) 4508 return; 4509 4510 ndlp->rport = rport = fc_remote_port_add(shost, 0, &rport_ids); 4511 if (!rport) { 4512 dev_printk(KERN_WARNING, &phba->pcidev->dev, 4513 "Warning: fc_remote_port_add failed\n"); 4514 return; 4515 } 4516 4517 /* Successful port add. Complete initializing node data */ 4518 rport->maxframe_size = ndlp->nlp_maxframe; 4519 rport->supported_classes = ndlp->nlp_class_sup; 4520 rdata = rport->dd_data; 4521 rdata->pnode = lpfc_nlp_get(ndlp); 4522 if (!rdata->pnode) { 4523 dev_warn(&phba->pcidev->dev, 4524 "Warning - node ref failed. Unreg rport\n"); 4525 fc_remote_port_delete(rport); 4526 ndlp->rport = NULL; 4527 return; 4528 } 4529 4530 spin_lock_irqsave(&ndlp->lock, flags); 4531 ndlp->fc4_xpt_flags |= SCSI_XPT_REGD; 4532 spin_unlock_irqrestore(&ndlp->lock, flags); 4533 4534 if (ndlp->nlp_type & NLP_FCP_TARGET) 4535 rport_ids.roles |= FC_PORT_ROLE_FCP_TARGET; 4536 if (ndlp->nlp_type & NLP_FCP_INITIATOR) 4537 rport_ids.roles |= FC_PORT_ROLE_FCP_INITIATOR; 4538 if (ndlp->nlp_type & NLP_NVME_INITIATOR) 4539 rport_ids.roles |= FC_PORT_ROLE_NVME_INITIATOR; 4540 if (ndlp->nlp_type & NLP_NVME_TARGET) 4541 rport_ids.roles |= FC_PORT_ROLE_NVME_TARGET; 4542 if (ndlp->nlp_type & NLP_NVME_DISCOVERY) 4543 rport_ids.roles |= FC_PORT_ROLE_NVME_DISCOVERY; 4544 4545 if (rport_ids.roles != FC_RPORT_ROLE_UNKNOWN) 4546 fc_remote_port_rolechg(rport, rport_ids.roles); 4547 4548 lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_NODE, 4549 "3183 %s rport x%px DID x%x, role x%x refcnt %d\n", 4550 __func__, rport, rport->port_id, rport->roles, 4551 kref_read(&ndlp->kref)); 4552 4553 if ((rport->scsi_target_id != -1) && 4554 (rport->scsi_target_id < LPFC_MAX_TARGET)) { 4555 ndlp->nlp_sid = rport->scsi_target_id; 4556 } 4557 4558 return; 4559 } 4560 4561 static void 4562 lpfc_unregister_remote_port(struct lpfc_nodelist *ndlp) 4563 { 4564 struct fc_rport *rport = ndlp->rport; 4565 struct lpfc_vport *vport = ndlp->vport; 4566 4567 if (vport->cfg_enable_fc4_type == LPFC_ENABLE_NVME) 4568 return; 4569 4570 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT, 4571 "rport delete: did:x%x flg:x%x type x%x", 4572 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type); 4573 4574 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE, 4575 "3184 rport unregister x%06x, rport x%px " 4576 "xptflg x%x refcnt %d\n", 4577 ndlp->nlp_DID, rport, ndlp->fc4_xpt_flags, 4578 kref_read(&ndlp->kref)); 4579 4580 fc_remote_port_delete(rport); 4581 lpfc_nlp_put(ndlp); 4582 } 4583 4584 static void 4585 lpfc_nlp_counters(struct lpfc_vport *vport, int state, int count) 4586 { 4587 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 4588 unsigned long iflags; 4589 4590 spin_lock_irqsave(shost->host_lock, iflags); 4591 switch (state) { 4592 case NLP_STE_UNUSED_NODE: 4593 vport->fc_unused_cnt += count; 4594 break; 4595 case NLP_STE_PLOGI_ISSUE: 4596 vport->fc_plogi_cnt += count; 4597 break; 4598 case NLP_STE_ADISC_ISSUE: 4599 vport->fc_adisc_cnt += count; 4600 break; 4601 case NLP_STE_REG_LOGIN_ISSUE: 4602 vport->fc_reglogin_cnt += count; 4603 break; 4604 case NLP_STE_PRLI_ISSUE: 4605 vport->fc_prli_cnt += count; 4606 break; 4607 case NLP_STE_UNMAPPED_NODE: 4608 vport->fc_unmap_cnt += count; 4609 break; 4610 case NLP_STE_MAPPED_NODE: 4611 vport->fc_map_cnt += count; 4612 break; 4613 case NLP_STE_NPR_NODE: 4614 if (vport->fc_npr_cnt == 0 && count == -1) 4615 vport->fc_npr_cnt = 0; 4616 else 4617 vport->fc_npr_cnt += count; 4618 break; 4619 } 4620 spin_unlock_irqrestore(shost->host_lock, iflags); 4621 } 4622 4623 /* Register a node with backend if not already done */ 4624 void 4625 lpfc_nlp_reg_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) 4626 { 4627 unsigned long iflags; 4628 4629 lpfc_check_nlp_post_devloss(vport, ndlp); 4630 4631 spin_lock_irqsave(&ndlp->lock, iflags); 4632 if (ndlp->fc4_xpt_flags & NLP_XPT_REGD) { 4633 /* Already registered with backend, trigger rescan */ 4634 spin_unlock_irqrestore(&ndlp->lock, iflags); 4635 4636 if (ndlp->fc4_xpt_flags & NVME_XPT_REGD && 4637 ndlp->nlp_type & (NLP_NVME_TARGET | NLP_NVME_DISCOVERY)) { 4638 lpfc_nvme_rescan_port(vport, ndlp); 4639 } 4640 return; 4641 } 4642 4643 ndlp->fc4_xpt_flags |= NLP_XPT_REGD; 4644 spin_unlock_irqrestore(&ndlp->lock, iflags); 4645 4646 if (lpfc_valid_xpt_node(ndlp)) { 4647 vport->phba->nport_event_cnt++; 4648 /* 4649 * Tell the fc transport about the port, if we haven't 4650 * already. If we have, and it's a scsi entity, be 4651 */ 4652 lpfc_register_remote_port(vport, ndlp); 4653 } 4654 4655 /* We are done if we do not have any NVME remote node */ 4656 if (!(ndlp->nlp_fc4_type & NLP_FC4_NVME)) 4657 return; 4658 4659 /* Notify the NVME transport of this new rport. */ 4660 if (vport->phba->sli_rev >= LPFC_SLI_REV4 && 4661 ndlp->nlp_fc4_type & NLP_FC4_NVME) { 4662 if (vport->phba->nvmet_support == 0) { 4663 /* Register this rport with the transport. 4664 * Only NVME Target Rports are registered with 4665 * the transport. 4666 */ 4667 if (ndlp->nlp_type & NLP_NVME_TARGET) { 4668 vport->phba->nport_event_cnt++; 4669 lpfc_nvme_register_port(vport, ndlp); 4670 } 4671 } else { 4672 /* Just take an NDLP ref count since the 4673 * target does not register rports. 4674 */ 4675 lpfc_nlp_get(ndlp); 4676 } 4677 } 4678 } 4679 4680 /* Unregister a node with backend if not already done */ 4681 void 4682 lpfc_nlp_unreg_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) 4683 { 4684 unsigned long iflags; 4685 4686 spin_lock_irqsave(&ndlp->lock, iflags); 4687 if (!(ndlp->fc4_xpt_flags & NLP_XPT_REGD)) { 4688 spin_unlock_irqrestore(&ndlp->lock, iflags); 4689 lpfc_printf_vlog(vport, KERN_INFO, LOG_SLI, 4690 "0999 %s Not regd: ndlp x%px rport x%px DID " 4691 "x%x FLG x%x XPT x%x\n", 4692 __func__, ndlp, ndlp->rport, ndlp->nlp_DID, 4693 ndlp->nlp_flag, ndlp->fc4_xpt_flags); 4694 return; 4695 } 4696 4697 ndlp->fc4_xpt_flags &= ~NLP_XPT_REGD; 4698 spin_unlock_irqrestore(&ndlp->lock, iflags); 4699 4700 if (ndlp->rport && 4701 ndlp->fc4_xpt_flags & SCSI_XPT_REGD) { 4702 vport->phba->nport_event_cnt++; 4703 lpfc_unregister_remote_port(ndlp); 4704 } else if (!ndlp->rport) { 4705 lpfc_printf_vlog(vport, KERN_INFO, LOG_SLI, 4706 "1999 %s NDLP in devloss x%px DID x%x FLG x%x" 4707 " XPT x%x refcnt %d\n", 4708 __func__, ndlp, ndlp->nlp_DID, ndlp->nlp_flag, 4709 ndlp->fc4_xpt_flags, 4710 kref_read(&ndlp->kref)); 4711 } 4712 4713 if (ndlp->fc4_xpt_flags & NVME_XPT_REGD) { 4714 vport->phba->nport_event_cnt++; 4715 if (vport->phba->nvmet_support == 0) { 4716 /* Start devloss if target. */ 4717 if (ndlp->nlp_type & NLP_NVME_TARGET) 4718 lpfc_nvme_unregister_port(vport, ndlp); 4719 } else { 4720 /* NVMET has no upcall. */ 4721 lpfc_nlp_put(ndlp); 4722 } 4723 } 4724 4725 } 4726 4727 /* 4728 * Adisc state change handling 4729 */ 4730 static void 4731 lpfc_handle_adisc_state(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 4732 int new_state) 4733 { 4734 switch (new_state) { 4735 /* 4736 * Any state to ADISC_ISSUE 4737 * Do nothing, adisc cmpl handling will trigger state changes 4738 */ 4739 case NLP_STE_ADISC_ISSUE: 4740 break; 4741 4742 /* 4743 * ADISC_ISSUE to mapped states 4744 * Trigger a registration with backend, it will be nop if 4745 * already registered 4746 */ 4747 case NLP_STE_UNMAPPED_NODE: 4748 ndlp->nlp_type |= NLP_FC_NODE; 4749 fallthrough; 4750 case NLP_STE_MAPPED_NODE: 4751 ndlp->nlp_flag &= ~NLP_NODEV_REMOVE; 4752 lpfc_nlp_reg_node(vport, ndlp); 4753 break; 4754 4755 /* 4756 * ADISC_ISSUE to non-mapped states 4757 * We are moving from ADISC_ISSUE to a non-mapped state because 4758 * ADISC failed, we would have skipped unregistering with 4759 * backend, attempt it now 4760 */ 4761 case NLP_STE_NPR_NODE: 4762 ndlp->nlp_flag &= ~NLP_RCV_PLOGI; 4763 fallthrough; 4764 default: 4765 lpfc_nlp_unreg_node(vport, ndlp); 4766 break; 4767 } 4768 4769 } 4770 4771 static void 4772 lpfc_nlp_state_cleanup(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 4773 int old_state, int new_state) 4774 { 4775 /* Trap ADISC changes here */ 4776 if (new_state == NLP_STE_ADISC_ISSUE || 4777 old_state == NLP_STE_ADISC_ISSUE) { 4778 lpfc_handle_adisc_state(vport, ndlp, new_state); 4779 return; 4780 } 4781 4782 if (new_state == NLP_STE_UNMAPPED_NODE) { 4783 ndlp->nlp_flag &= ~NLP_NODEV_REMOVE; 4784 ndlp->nlp_type |= NLP_FC_NODE; 4785 } 4786 if (new_state == NLP_STE_MAPPED_NODE) 4787 ndlp->nlp_flag &= ~NLP_NODEV_REMOVE; 4788 if (new_state == NLP_STE_NPR_NODE) 4789 ndlp->nlp_flag &= ~NLP_RCV_PLOGI; 4790 4791 /* Reg/Unreg for FCP and NVME Transport interface */ 4792 if ((old_state == NLP_STE_MAPPED_NODE || 4793 old_state == NLP_STE_UNMAPPED_NODE)) { 4794 /* For nodes marked for ADISC, Handle unreg in ADISC cmpl 4795 * if linkup. In linkdown do unreg_node 4796 */ 4797 if (!(ndlp->nlp_flag & NLP_NPR_ADISC) || 4798 !lpfc_is_link_up(vport->phba)) 4799 lpfc_nlp_unreg_node(vport, ndlp); 4800 } 4801 4802 if (new_state == NLP_STE_MAPPED_NODE || 4803 new_state == NLP_STE_UNMAPPED_NODE) 4804 lpfc_nlp_reg_node(vport, ndlp); 4805 4806 /* 4807 * If the node just added to Mapped list was an FCP target, 4808 * but the remote port registration failed or assigned a target 4809 * id outside the presentable range - move the node to the 4810 * Unmapped List. 4811 */ 4812 if ((new_state == NLP_STE_MAPPED_NODE) && 4813 (ndlp->nlp_type & NLP_FCP_TARGET) && 4814 (!ndlp->rport || 4815 ndlp->rport->scsi_target_id == -1 || 4816 ndlp->rport->scsi_target_id >= LPFC_MAX_TARGET)) { 4817 spin_lock_irq(&ndlp->lock); 4818 ndlp->nlp_flag |= NLP_TGT_NO_SCSIID; 4819 spin_unlock_irq(&ndlp->lock); 4820 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE); 4821 } 4822 } 4823 4824 static char * 4825 lpfc_nlp_state_name(char *buffer, size_t size, int state) 4826 { 4827 static char *states[] = { 4828 [NLP_STE_UNUSED_NODE] = "UNUSED", 4829 [NLP_STE_PLOGI_ISSUE] = "PLOGI", 4830 [NLP_STE_ADISC_ISSUE] = "ADISC", 4831 [NLP_STE_REG_LOGIN_ISSUE] = "REGLOGIN", 4832 [NLP_STE_PRLI_ISSUE] = "PRLI", 4833 [NLP_STE_LOGO_ISSUE] = "LOGO", 4834 [NLP_STE_UNMAPPED_NODE] = "UNMAPPED", 4835 [NLP_STE_MAPPED_NODE] = "MAPPED", 4836 [NLP_STE_NPR_NODE] = "NPR", 4837 }; 4838 4839 if (state < NLP_STE_MAX_STATE && states[state]) 4840 strscpy(buffer, states[state], size); 4841 else 4842 snprintf(buffer, size, "unknown (%d)", state); 4843 return buffer; 4844 } 4845 4846 void 4847 lpfc_nlp_set_state(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 4848 int state) 4849 { 4850 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 4851 int old_state = ndlp->nlp_state; 4852 int node_dropped = ndlp->nlp_flag & NLP_DROPPED; 4853 char name1[16], name2[16]; 4854 4855 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE, 4856 "0904 NPort state transition x%06x, %s -> %s\n", 4857 ndlp->nlp_DID, 4858 lpfc_nlp_state_name(name1, sizeof(name1), old_state), 4859 lpfc_nlp_state_name(name2, sizeof(name2), state)); 4860 4861 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE, 4862 "node statechg did:x%x old:%d ste:%d", 4863 ndlp->nlp_DID, old_state, state); 4864 4865 if (node_dropped && old_state == NLP_STE_UNUSED_NODE && 4866 state != NLP_STE_UNUSED_NODE) { 4867 ndlp->nlp_flag &= ~NLP_DROPPED; 4868 lpfc_nlp_get(ndlp); 4869 } 4870 4871 if (old_state == NLP_STE_NPR_NODE && 4872 state != NLP_STE_NPR_NODE) 4873 lpfc_cancel_retry_delay_tmo(vport, ndlp); 4874 if (old_state == NLP_STE_UNMAPPED_NODE) { 4875 ndlp->nlp_flag &= ~NLP_TGT_NO_SCSIID; 4876 ndlp->nlp_type &= ~NLP_FC_NODE; 4877 } 4878 4879 if (list_empty(&ndlp->nlp_listp)) { 4880 spin_lock_irq(shost->host_lock); 4881 list_add_tail(&ndlp->nlp_listp, &vport->fc_nodes); 4882 spin_unlock_irq(shost->host_lock); 4883 } else if (old_state) 4884 lpfc_nlp_counters(vport, old_state, -1); 4885 4886 ndlp->nlp_state = state; 4887 lpfc_nlp_counters(vport, state, 1); 4888 lpfc_nlp_state_cleanup(vport, ndlp, old_state, state); 4889 } 4890 4891 void 4892 lpfc_enqueue_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) 4893 { 4894 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 4895 4896 if (list_empty(&ndlp->nlp_listp)) { 4897 spin_lock_irq(shost->host_lock); 4898 list_add_tail(&ndlp->nlp_listp, &vport->fc_nodes); 4899 spin_unlock_irq(shost->host_lock); 4900 } 4901 } 4902 4903 void 4904 lpfc_dequeue_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) 4905 { 4906 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 4907 4908 lpfc_cancel_retry_delay_tmo(vport, ndlp); 4909 if (ndlp->nlp_state && !list_empty(&ndlp->nlp_listp)) 4910 lpfc_nlp_counters(vport, ndlp->nlp_state, -1); 4911 spin_lock_irq(shost->host_lock); 4912 list_del_init(&ndlp->nlp_listp); 4913 spin_unlock_irq(shost->host_lock); 4914 lpfc_nlp_state_cleanup(vport, ndlp, ndlp->nlp_state, 4915 NLP_STE_UNUSED_NODE); 4916 } 4917 4918 /** 4919 * lpfc_initialize_node - Initialize all fields of node object 4920 * @vport: Pointer to Virtual Port object. 4921 * @ndlp: Pointer to FC node object. 4922 * @did: FC_ID of the node. 4923 * 4924 * This function is always called when node object need to be initialized. 4925 * It initializes all the fields of the node object. Although the reference 4926 * to phba from @ndlp can be obtained indirectly through it's reference to 4927 * @vport, a direct reference to phba is taken here by @ndlp. This is due 4928 * to the life-span of the @ndlp might go beyond the existence of @vport as 4929 * the final release of ndlp is determined by its reference count. And, the 4930 * operation on @ndlp needs the reference to phba. 4931 **/ 4932 static inline void 4933 lpfc_initialize_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 4934 uint32_t did) 4935 { 4936 INIT_LIST_HEAD(&ndlp->els_retry_evt.evt_listp); 4937 INIT_LIST_HEAD(&ndlp->dev_loss_evt.evt_listp); 4938 timer_setup(&ndlp->nlp_delayfunc, lpfc_els_retry_delay, 0); 4939 INIT_LIST_HEAD(&ndlp->recovery_evt.evt_listp); 4940 4941 ndlp->nlp_DID = did; 4942 ndlp->vport = vport; 4943 ndlp->phba = vport->phba; 4944 ndlp->nlp_sid = NLP_NO_SID; 4945 ndlp->nlp_fc4_type = NLP_FC4_NONE; 4946 kref_init(&ndlp->kref); 4947 atomic_set(&ndlp->cmd_pending, 0); 4948 ndlp->cmd_qdepth = vport->cfg_tgt_queue_depth; 4949 ndlp->nlp_defer_did = NLP_EVT_NOTHING_PENDING; 4950 } 4951 4952 void 4953 lpfc_drop_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) 4954 { 4955 /* 4956 * Use of lpfc_drop_node and UNUSED list: lpfc_drop_node should 4957 * be used if we wish to issue the "last" lpfc_nlp_put() to remove 4958 * the ndlp from the vport. The ndlp marked as UNUSED on the list 4959 * until ALL other outstanding threads have completed. We check 4960 * that the ndlp not already in the UNUSED state before we proceed. 4961 */ 4962 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE) 4963 return; 4964 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNUSED_NODE); 4965 ndlp->nlp_flag |= NLP_DROPPED; 4966 if (vport->phba->sli_rev == LPFC_SLI_REV4) { 4967 lpfc_cleanup_vports_rrqs(vport, ndlp); 4968 lpfc_unreg_rpi(vport, ndlp); 4969 } 4970 4971 lpfc_nlp_put(ndlp); 4972 return; 4973 } 4974 4975 /* 4976 * Start / ReStart rescue timer for Discovery / RSCN handling 4977 */ 4978 void 4979 lpfc_set_disctmo(struct lpfc_vport *vport) 4980 { 4981 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 4982 struct lpfc_hba *phba = vport->phba; 4983 uint32_t tmo; 4984 4985 if (vport->port_state == LPFC_LOCAL_CFG_LINK) { 4986 /* For FAN, timeout should be greater than edtov */ 4987 tmo = (((phba->fc_edtov + 999) / 1000) + 1); 4988 } else { 4989 /* Normal discovery timeout should be > than ELS/CT timeout 4990 * FC spec states we need 3 * ratov for CT requests 4991 */ 4992 tmo = ((phba->fc_ratov * 3) + 3); 4993 } 4994 4995 4996 if (!timer_pending(&vport->fc_disctmo)) { 4997 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, 4998 "set disc timer: tmo:x%x state:x%x flg:x%x", 4999 tmo, vport->port_state, vport->fc_flag); 5000 } 5001 5002 mod_timer(&vport->fc_disctmo, jiffies + msecs_to_jiffies(1000 * tmo)); 5003 spin_lock_irq(shost->host_lock); 5004 vport->fc_flag |= FC_DISC_TMO; 5005 spin_unlock_irq(shost->host_lock); 5006 5007 /* Start Discovery Timer state <hba_state> */ 5008 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, 5009 "0247 Start Discovery Timer state x%x " 5010 "Data: x%x x%lx x%x x%x\n", 5011 vport->port_state, tmo, 5012 (unsigned long)&vport->fc_disctmo, vport->fc_plogi_cnt, 5013 vport->fc_adisc_cnt); 5014 5015 return; 5016 } 5017 5018 /* 5019 * Cancel rescue timer for Discovery / RSCN handling 5020 */ 5021 int 5022 lpfc_can_disctmo(struct lpfc_vport *vport) 5023 { 5024 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 5025 unsigned long iflags; 5026 5027 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, 5028 "can disc timer: state:x%x rtry:x%x flg:x%x", 5029 vport->port_state, vport->fc_ns_retry, vport->fc_flag); 5030 5031 /* Turn off discovery timer if its running */ 5032 if (vport->fc_flag & FC_DISC_TMO || 5033 timer_pending(&vport->fc_disctmo)) { 5034 spin_lock_irqsave(shost->host_lock, iflags); 5035 vport->fc_flag &= ~FC_DISC_TMO; 5036 spin_unlock_irqrestore(shost->host_lock, iflags); 5037 del_timer_sync(&vport->fc_disctmo); 5038 spin_lock_irqsave(&vport->work_port_lock, iflags); 5039 vport->work_port_events &= ~WORKER_DISC_TMO; 5040 spin_unlock_irqrestore(&vport->work_port_lock, iflags); 5041 } 5042 5043 /* Cancel Discovery Timer state <hba_state> */ 5044 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, 5045 "0248 Cancel Discovery Timer state x%x " 5046 "Data: x%x x%x x%x\n", 5047 vport->port_state, vport->fc_flag, 5048 vport->fc_plogi_cnt, vport->fc_adisc_cnt); 5049 return 0; 5050 } 5051 5052 /* 5053 * Check specified ring for outstanding IOCB on the SLI queue 5054 * Return true if iocb matches the specified nport 5055 */ 5056 int 5057 lpfc_check_sli_ndlp(struct lpfc_hba *phba, 5058 struct lpfc_sli_ring *pring, 5059 struct lpfc_iocbq *iocb, 5060 struct lpfc_nodelist *ndlp) 5061 { 5062 struct lpfc_vport *vport = ndlp->vport; 5063 u8 ulp_command; 5064 u16 ulp_context; 5065 u32 remote_id; 5066 5067 if (iocb->vport != vport) 5068 return 0; 5069 5070 ulp_command = get_job_cmnd(phba, iocb); 5071 ulp_context = get_job_ulpcontext(phba, iocb); 5072 remote_id = get_job_els_rsp64_did(phba, iocb); 5073 5074 if (pring->ringno == LPFC_ELS_RING) { 5075 switch (ulp_command) { 5076 case CMD_GEN_REQUEST64_CR: 5077 if (iocb->ndlp == ndlp) 5078 return 1; 5079 fallthrough; 5080 case CMD_ELS_REQUEST64_CR: 5081 if (remote_id == ndlp->nlp_DID) 5082 return 1; 5083 fallthrough; 5084 case CMD_XMIT_ELS_RSP64_CX: 5085 if (iocb->ndlp == ndlp) 5086 return 1; 5087 } 5088 } else if (pring->ringno == LPFC_FCP_RING) { 5089 /* Skip match check if waiting to relogin to FCP target */ 5090 if ((ndlp->nlp_type & NLP_FCP_TARGET) && 5091 (ndlp->nlp_flag & NLP_DELAY_TMO)) { 5092 return 0; 5093 } 5094 if (ulp_context == ndlp->nlp_rpi) 5095 return 1; 5096 } 5097 return 0; 5098 } 5099 5100 static void 5101 __lpfc_dequeue_nport_iocbs(struct lpfc_hba *phba, 5102 struct lpfc_nodelist *ndlp, struct lpfc_sli_ring *pring, 5103 struct list_head *dequeue_list) 5104 { 5105 struct lpfc_iocbq *iocb, *next_iocb; 5106 5107 list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) { 5108 /* Check to see if iocb matches the nport */ 5109 if (lpfc_check_sli_ndlp(phba, pring, iocb, ndlp)) 5110 /* match, dequeue */ 5111 list_move_tail(&iocb->list, dequeue_list); 5112 } 5113 } 5114 5115 static void 5116 lpfc_sli3_dequeue_nport_iocbs(struct lpfc_hba *phba, 5117 struct lpfc_nodelist *ndlp, struct list_head *dequeue_list) 5118 { 5119 struct lpfc_sli *psli = &phba->sli; 5120 uint32_t i; 5121 5122 spin_lock_irq(&phba->hbalock); 5123 for (i = 0; i < psli->num_rings; i++) 5124 __lpfc_dequeue_nport_iocbs(phba, ndlp, &psli->sli3_ring[i], 5125 dequeue_list); 5126 spin_unlock_irq(&phba->hbalock); 5127 } 5128 5129 static void 5130 lpfc_sli4_dequeue_nport_iocbs(struct lpfc_hba *phba, 5131 struct lpfc_nodelist *ndlp, struct list_head *dequeue_list) 5132 { 5133 struct lpfc_sli_ring *pring; 5134 struct lpfc_queue *qp = NULL; 5135 5136 spin_lock_irq(&phba->hbalock); 5137 list_for_each_entry(qp, &phba->sli4_hba.lpfc_wq_list, wq_list) { 5138 pring = qp->pring; 5139 if (!pring) 5140 continue; 5141 spin_lock(&pring->ring_lock); 5142 __lpfc_dequeue_nport_iocbs(phba, ndlp, pring, dequeue_list); 5143 spin_unlock(&pring->ring_lock); 5144 } 5145 spin_unlock_irq(&phba->hbalock); 5146 } 5147 5148 /* 5149 * Free resources / clean up outstanding I/Os 5150 * associated with nlp_rpi in the LPFC_NODELIST entry. 5151 */ 5152 static int 5153 lpfc_no_rpi(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp) 5154 { 5155 LIST_HEAD(completions); 5156 5157 lpfc_fabric_abort_nport(ndlp); 5158 5159 /* 5160 * Everything that matches on txcmplq will be returned 5161 * by firmware with a no rpi error. 5162 */ 5163 if (ndlp->nlp_flag & NLP_RPI_REGISTERED) { 5164 if (phba->sli_rev != LPFC_SLI_REV4) 5165 lpfc_sli3_dequeue_nport_iocbs(phba, ndlp, &completions); 5166 else 5167 lpfc_sli4_dequeue_nport_iocbs(phba, ndlp, &completions); 5168 } 5169 5170 /* Cancel all the IOCBs from the completions list */ 5171 lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT, 5172 IOERR_SLI_ABORTED); 5173 5174 return 0; 5175 } 5176 5177 /** 5178 * lpfc_nlp_logo_unreg - Unreg mailbox completion handler before LOGO 5179 * @phba: Pointer to HBA context object. 5180 * @pmb: Pointer to mailbox object. 5181 * 5182 * This function will issue an ELS LOGO command after completing 5183 * the UNREG_RPI. 5184 **/ 5185 static void 5186 lpfc_nlp_logo_unreg(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 5187 { 5188 struct lpfc_vport *vport = pmb->vport; 5189 struct lpfc_nodelist *ndlp; 5190 5191 ndlp = (struct lpfc_nodelist *)(pmb->ctx_ndlp); 5192 if (!ndlp) 5193 return; 5194 lpfc_issue_els_logo(vport, ndlp, 0); 5195 5196 /* Check to see if there are any deferred events to process */ 5197 if ((ndlp->nlp_flag & NLP_UNREG_INP) && 5198 (ndlp->nlp_defer_did != NLP_EVT_NOTHING_PENDING)) { 5199 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, 5200 "1434 UNREG cmpl deferred logo x%x " 5201 "on NPort x%x Data: x%x x%px\n", 5202 ndlp->nlp_rpi, ndlp->nlp_DID, 5203 ndlp->nlp_defer_did, ndlp); 5204 5205 ndlp->nlp_flag &= ~NLP_UNREG_INP; 5206 ndlp->nlp_defer_did = NLP_EVT_NOTHING_PENDING; 5207 lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0); 5208 } else { 5209 /* NLP_RELEASE_RPI is only set for SLI4 ports. */ 5210 if (ndlp->nlp_flag & NLP_RELEASE_RPI) { 5211 lpfc_sli4_free_rpi(vport->phba, ndlp->nlp_rpi); 5212 spin_lock_irq(&ndlp->lock); 5213 ndlp->nlp_flag &= ~NLP_RELEASE_RPI; 5214 ndlp->nlp_rpi = LPFC_RPI_ALLOC_ERROR; 5215 spin_unlock_irq(&ndlp->lock); 5216 } 5217 spin_lock_irq(&ndlp->lock); 5218 ndlp->nlp_flag &= ~NLP_UNREG_INP; 5219 spin_unlock_irq(&ndlp->lock); 5220 } 5221 5222 /* The node has an outstanding reference for the unreg. Now 5223 * that the LOGO action and cleanup are finished, release 5224 * resources. 5225 */ 5226 lpfc_nlp_put(ndlp); 5227 mempool_free(pmb, phba->mbox_mem_pool); 5228 } 5229 5230 /* 5231 * Sets the mailbox completion handler to be used for the 5232 * unreg_rpi command. The handler varies based on the state of 5233 * the port and what will be happening to the rpi next. 5234 */ 5235 static void 5236 lpfc_set_unreg_login_mbx_cmpl(struct lpfc_hba *phba, struct lpfc_vport *vport, 5237 struct lpfc_nodelist *ndlp, LPFC_MBOXQ_t *mbox) 5238 { 5239 unsigned long iflags; 5240 5241 /* Driver always gets a reference on the mailbox job 5242 * in support of async jobs. 5243 */ 5244 mbox->ctx_ndlp = lpfc_nlp_get(ndlp); 5245 if (!mbox->ctx_ndlp) 5246 return; 5247 5248 if (ndlp->nlp_flag & NLP_ISSUE_LOGO) { 5249 mbox->mbox_cmpl = lpfc_nlp_logo_unreg; 5250 5251 } else if (phba->sli_rev == LPFC_SLI_REV4 && 5252 (!(vport->load_flag & FC_UNLOADING)) && 5253 (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) >= 5254 LPFC_SLI_INTF_IF_TYPE_2) && 5255 (kref_read(&ndlp->kref) > 0)) { 5256 mbox->mbox_cmpl = lpfc_sli4_unreg_rpi_cmpl_clr; 5257 } else { 5258 if (vport->load_flag & FC_UNLOADING) { 5259 if (phba->sli_rev == LPFC_SLI_REV4) { 5260 spin_lock_irqsave(&ndlp->lock, iflags); 5261 ndlp->nlp_flag |= NLP_RELEASE_RPI; 5262 spin_unlock_irqrestore(&ndlp->lock, iflags); 5263 } 5264 } 5265 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl; 5266 } 5267 } 5268 5269 /* 5270 * Free rpi associated with LPFC_NODELIST entry. 5271 * This routine is called from lpfc_freenode(), when we are removing 5272 * a LPFC_NODELIST entry. It is also called if the driver initiates a 5273 * LOGO that completes successfully, and we are waiting to PLOGI back 5274 * to the remote NPort. In addition, it is called after we receive 5275 * and unsolicated ELS cmd, send back a rsp, the rsp completes and 5276 * we are waiting to PLOGI back to the remote NPort. 5277 */ 5278 int 5279 lpfc_unreg_rpi(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) 5280 { 5281 struct lpfc_hba *phba = vport->phba; 5282 LPFC_MBOXQ_t *mbox; 5283 int rc, acc_plogi = 1; 5284 uint16_t rpi; 5285 5286 if (ndlp->nlp_flag & NLP_RPI_REGISTERED || 5287 ndlp->nlp_flag & NLP_REG_LOGIN_SEND) { 5288 if (ndlp->nlp_flag & NLP_REG_LOGIN_SEND) 5289 lpfc_printf_vlog(vport, KERN_INFO, 5290 LOG_NODE | LOG_DISCOVERY, 5291 "3366 RPI x%x needs to be " 5292 "unregistered nlp_flag x%x " 5293 "did x%x\n", 5294 ndlp->nlp_rpi, ndlp->nlp_flag, 5295 ndlp->nlp_DID); 5296 5297 /* If there is already an UNREG in progress for this ndlp, 5298 * no need to queue up another one. 5299 */ 5300 if (ndlp->nlp_flag & NLP_UNREG_INP) { 5301 lpfc_printf_vlog(vport, KERN_INFO, 5302 LOG_NODE | LOG_DISCOVERY, 5303 "1436 unreg_rpi SKIP UNREG x%x on " 5304 "NPort x%x deferred x%x flg x%x " 5305 "Data: x%px\n", 5306 ndlp->nlp_rpi, ndlp->nlp_DID, 5307 ndlp->nlp_defer_did, 5308 ndlp->nlp_flag, ndlp); 5309 goto out; 5310 } 5311 5312 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 5313 if (mbox) { 5314 /* SLI4 ports require the physical rpi value. */ 5315 rpi = ndlp->nlp_rpi; 5316 if (phba->sli_rev == LPFC_SLI_REV4) 5317 rpi = phba->sli4_hba.rpi_ids[ndlp->nlp_rpi]; 5318 5319 lpfc_unreg_login(phba, vport->vpi, rpi, mbox); 5320 mbox->vport = vport; 5321 lpfc_set_unreg_login_mbx_cmpl(phba, vport, ndlp, mbox); 5322 if (!mbox->ctx_ndlp) { 5323 mempool_free(mbox, phba->mbox_mem_pool); 5324 return 1; 5325 } 5326 5327 if (mbox->mbox_cmpl == lpfc_sli4_unreg_rpi_cmpl_clr) 5328 /* 5329 * accept PLOGIs after unreg_rpi_cmpl 5330 */ 5331 acc_plogi = 0; 5332 if (((ndlp->nlp_DID & Fabric_DID_MASK) != 5333 Fabric_DID_MASK) && 5334 (!(vport->fc_flag & FC_OFFLINE_MODE))) 5335 ndlp->nlp_flag |= NLP_UNREG_INP; 5336 5337 lpfc_printf_vlog(vport, KERN_INFO, 5338 LOG_NODE | LOG_DISCOVERY, 5339 "1433 unreg_rpi UNREG x%x on " 5340 "NPort x%x deferred flg x%x " 5341 "Data:x%px\n", 5342 ndlp->nlp_rpi, ndlp->nlp_DID, 5343 ndlp->nlp_flag, ndlp); 5344 5345 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT); 5346 if (rc == MBX_NOT_FINISHED) { 5347 ndlp->nlp_flag &= ~NLP_UNREG_INP; 5348 mempool_free(mbox, phba->mbox_mem_pool); 5349 acc_plogi = 1; 5350 lpfc_nlp_put(ndlp); 5351 } 5352 } else { 5353 lpfc_printf_vlog(vport, KERN_INFO, 5354 LOG_NODE | LOG_DISCOVERY, 5355 "1444 Failed to allocate mempool " 5356 "unreg_rpi UNREG x%x, " 5357 "DID x%x, flag x%x, " 5358 "ndlp x%px\n", 5359 ndlp->nlp_rpi, ndlp->nlp_DID, 5360 ndlp->nlp_flag, ndlp); 5361 5362 /* Because mempool_alloc failed, we 5363 * will issue a LOGO here and keep the rpi alive if 5364 * not unloading. 5365 */ 5366 if (!(vport->load_flag & FC_UNLOADING)) { 5367 ndlp->nlp_flag &= ~NLP_UNREG_INP; 5368 lpfc_issue_els_logo(vport, ndlp, 0); 5369 ndlp->nlp_prev_state = ndlp->nlp_state; 5370 lpfc_nlp_set_state(vport, ndlp, 5371 NLP_STE_NPR_NODE); 5372 } 5373 5374 return 1; 5375 } 5376 lpfc_no_rpi(phba, ndlp); 5377 out: 5378 if (phba->sli_rev != LPFC_SLI_REV4) 5379 ndlp->nlp_rpi = 0; 5380 ndlp->nlp_flag &= ~NLP_RPI_REGISTERED; 5381 ndlp->nlp_flag &= ~NLP_NPR_ADISC; 5382 if (acc_plogi) 5383 ndlp->nlp_flag &= ~NLP_LOGO_ACC; 5384 return 1; 5385 } 5386 ndlp->nlp_flag &= ~NLP_LOGO_ACC; 5387 return 0; 5388 } 5389 5390 /** 5391 * lpfc_unreg_hba_rpis - Unregister rpis registered to the hba. 5392 * @phba: pointer to lpfc hba data structure. 5393 * 5394 * This routine is invoked to unregister all the currently registered RPIs 5395 * to the HBA. 5396 **/ 5397 void 5398 lpfc_unreg_hba_rpis(struct lpfc_hba *phba) 5399 { 5400 struct lpfc_vport **vports; 5401 struct lpfc_nodelist *ndlp; 5402 struct Scsi_Host *shost; 5403 int i; 5404 5405 vports = lpfc_create_vport_work_array(phba); 5406 if (!vports) { 5407 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 5408 "2884 Vport array allocation failed \n"); 5409 return; 5410 } 5411 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) { 5412 shost = lpfc_shost_from_vport(vports[i]); 5413 spin_lock_irq(shost->host_lock); 5414 list_for_each_entry(ndlp, &vports[i]->fc_nodes, nlp_listp) { 5415 if (ndlp->nlp_flag & NLP_RPI_REGISTERED) { 5416 /* The mempool_alloc might sleep */ 5417 spin_unlock_irq(shost->host_lock); 5418 lpfc_unreg_rpi(vports[i], ndlp); 5419 spin_lock_irq(shost->host_lock); 5420 } 5421 } 5422 spin_unlock_irq(shost->host_lock); 5423 } 5424 lpfc_destroy_vport_work_array(phba, vports); 5425 } 5426 5427 void 5428 lpfc_unreg_all_rpis(struct lpfc_vport *vport) 5429 { 5430 struct lpfc_hba *phba = vport->phba; 5431 LPFC_MBOXQ_t *mbox; 5432 int rc; 5433 5434 if (phba->sli_rev == LPFC_SLI_REV4) { 5435 lpfc_sli4_unreg_all_rpis(vport); 5436 return; 5437 } 5438 5439 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 5440 if (mbox) { 5441 lpfc_unreg_login(phba, vport->vpi, LPFC_UNREG_ALL_RPIS_VPORT, 5442 mbox); 5443 mbox->vport = vport; 5444 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl; 5445 mbox->ctx_ndlp = NULL; 5446 rc = lpfc_sli_issue_mbox_wait(phba, mbox, LPFC_MBOX_TMO); 5447 if (rc != MBX_TIMEOUT) 5448 mempool_free(mbox, phba->mbox_mem_pool); 5449 5450 if ((rc == MBX_TIMEOUT) || (rc == MBX_NOT_FINISHED)) 5451 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 5452 "1836 Could not issue " 5453 "unreg_login(all_rpis) status %d\n", 5454 rc); 5455 } 5456 } 5457 5458 void 5459 lpfc_unreg_default_rpis(struct lpfc_vport *vport) 5460 { 5461 struct lpfc_hba *phba = vport->phba; 5462 LPFC_MBOXQ_t *mbox; 5463 int rc; 5464 5465 /* Unreg DID is an SLI3 operation. */ 5466 if (phba->sli_rev > LPFC_SLI_REV3) 5467 return; 5468 5469 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 5470 if (mbox) { 5471 lpfc_unreg_did(phba, vport->vpi, LPFC_UNREG_ALL_DFLT_RPIS, 5472 mbox); 5473 mbox->vport = vport; 5474 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl; 5475 mbox->ctx_ndlp = NULL; 5476 rc = lpfc_sli_issue_mbox_wait(phba, mbox, LPFC_MBOX_TMO); 5477 if (rc != MBX_TIMEOUT) 5478 mempool_free(mbox, phba->mbox_mem_pool); 5479 5480 if ((rc == MBX_TIMEOUT) || (rc == MBX_NOT_FINISHED)) 5481 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 5482 "1815 Could not issue " 5483 "unreg_did (default rpis) status %d\n", 5484 rc); 5485 } 5486 } 5487 5488 /* 5489 * Free resources associated with LPFC_NODELIST entry 5490 * so it can be freed. 5491 */ 5492 static int 5493 lpfc_cleanup_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) 5494 { 5495 struct lpfc_hba *phba = vport->phba; 5496 LPFC_MBOXQ_t *mb, *nextmb; 5497 5498 /* Cleanup node for NPort <nlp_DID> */ 5499 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE, 5500 "0900 Cleanup node for NPort x%x " 5501 "Data: x%x x%x x%x\n", 5502 ndlp->nlp_DID, ndlp->nlp_flag, 5503 ndlp->nlp_state, ndlp->nlp_rpi); 5504 lpfc_dequeue_node(vport, ndlp); 5505 5506 /* Don't need to clean up REG_LOGIN64 cmds for Default RPI cleanup */ 5507 5508 /* cleanup any ndlp on mbox q waiting for reglogin cmpl */ 5509 if ((mb = phba->sli.mbox_active)) { 5510 if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) && 5511 !(mb->mbox_flag & LPFC_MBX_IMED_UNREG) && 5512 (ndlp == (struct lpfc_nodelist *)mb->ctx_ndlp)) { 5513 mb->ctx_ndlp = NULL; 5514 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl; 5515 } 5516 } 5517 5518 spin_lock_irq(&phba->hbalock); 5519 /* Cleanup REG_LOGIN completions which are not yet processed */ 5520 list_for_each_entry(mb, &phba->sli.mboxq_cmpl, list) { 5521 if ((mb->u.mb.mbxCommand != MBX_REG_LOGIN64) || 5522 (mb->mbox_flag & LPFC_MBX_IMED_UNREG) || 5523 (ndlp != (struct lpfc_nodelist *)mb->ctx_ndlp)) 5524 continue; 5525 5526 mb->ctx_ndlp = NULL; 5527 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl; 5528 } 5529 5530 list_for_each_entry_safe(mb, nextmb, &phba->sli.mboxq, list) { 5531 if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) && 5532 !(mb->mbox_flag & LPFC_MBX_IMED_UNREG) && 5533 (ndlp == (struct lpfc_nodelist *)mb->ctx_ndlp)) { 5534 list_del(&mb->list); 5535 lpfc_mbox_rsrc_cleanup(phba, mb, MBOX_THD_LOCKED); 5536 5537 /* Don't invoke lpfc_nlp_put. The driver is in 5538 * lpfc_nlp_release context. 5539 */ 5540 } 5541 } 5542 spin_unlock_irq(&phba->hbalock); 5543 5544 lpfc_els_abort(phba, ndlp); 5545 5546 spin_lock_irq(&ndlp->lock); 5547 ndlp->nlp_flag &= ~NLP_DELAY_TMO; 5548 spin_unlock_irq(&ndlp->lock); 5549 5550 ndlp->nlp_last_elscmd = 0; 5551 del_timer_sync(&ndlp->nlp_delayfunc); 5552 5553 list_del_init(&ndlp->els_retry_evt.evt_listp); 5554 list_del_init(&ndlp->dev_loss_evt.evt_listp); 5555 list_del_init(&ndlp->recovery_evt.evt_listp); 5556 lpfc_cleanup_vports_rrqs(vport, ndlp); 5557 5558 if (phba->sli_rev == LPFC_SLI_REV4) 5559 ndlp->nlp_flag |= NLP_RELEASE_RPI; 5560 5561 return 0; 5562 } 5563 5564 static int 5565 lpfc_matchdid(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 5566 uint32_t did) 5567 { 5568 D_ID mydid, ndlpdid, matchdid; 5569 5570 if (did == Bcast_DID) 5571 return 0; 5572 5573 /* First check for Direct match */ 5574 if (ndlp->nlp_DID == did) 5575 return 1; 5576 5577 /* Next check for area/domain identically equals 0 match */ 5578 mydid.un.word = vport->fc_myDID; 5579 if ((mydid.un.b.domain == 0) && (mydid.un.b.area == 0)) { 5580 return 0; 5581 } 5582 5583 matchdid.un.word = did; 5584 ndlpdid.un.word = ndlp->nlp_DID; 5585 if (matchdid.un.b.id == ndlpdid.un.b.id) { 5586 if ((mydid.un.b.domain == matchdid.un.b.domain) && 5587 (mydid.un.b.area == matchdid.un.b.area)) { 5588 /* This code is supposed to match the ID 5589 * for a private loop device that is 5590 * connect to fl_port. But we need to 5591 * check that the port did not just go 5592 * from pt2pt to fabric or we could end 5593 * up matching ndlp->nlp_DID 000001 to 5594 * fabric DID 0x20101 5595 */ 5596 if ((ndlpdid.un.b.domain == 0) && 5597 (ndlpdid.un.b.area == 0)) { 5598 if (ndlpdid.un.b.id && 5599 vport->phba->fc_topology == 5600 LPFC_TOPOLOGY_LOOP) 5601 return 1; 5602 } 5603 return 0; 5604 } 5605 5606 matchdid.un.word = ndlp->nlp_DID; 5607 if ((mydid.un.b.domain == ndlpdid.un.b.domain) && 5608 (mydid.un.b.area == ndlpdid.un.b.area)) { 5609 if ((matchdid.un.b.domain == 0) && 5610 (matchdid.un.b.area == 0)) { 5611 if (matchdid.un.b.id) 5612 return 1; 5613 } 5614 } 5615 } 5616 return 0; 5617 } 5618 5619 /* Search for a nodelist entry */ 5620 static struct lpfc_nodelist * 5621 __lpfc_findnode_did(struct lpfc_vport *vport, uint32_t did) 5622 { 5623 struct lpfc_nodelist *ndlp; 5624 uint32_t data1; 5625 5626 list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) { 5627 if (lpfc_matchdid(vport, ndlp, did)) { 5628 data1 = (((uint32_t)ndlp->nlp_state << 24) | 5629 ((uint32_t)ndlp->nlp_xri << 16) | 5630 ((uint32_t)ndlp->nlp_type << 8) 5631 ); 5632 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE, 5633 "0929 FIND node DID " 5634 "Data: x%px x%x x%x x%x x%x x%px\n", 5635 ndlp, ndlp->nlp_DID, 5636 ndlp->nlp_flag, data1, ndlp->nlp_rpi, 5637 ndlp->active_rrqs_xri_bitmap); 5638 return ndlp; 5639 } 5640 } 5641 5642 /* FIND node did <did> NOT FOUND */ 5643 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE, 5644 "0932 FIND node did x%x NOT FOUND.\n", did); 5645 return NULL; 5646 } 5647 5648 struct lpfc_nodelist * 5649 lpfc_findnode_did(struct lpfc_vport *vport, uint32_t did) 5650 { 5651 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 5652 struct lpfc_nodelist *ndlp; 5653 unsigned long iflags; 5654 5655 spin_lock_irqsave(shost->host_lock, iflags); 5656 ndlp = __lpfc_findnode_did(vport, did); 5657 spin_unlock_irqrestore(shost->host_lock, iflags); 5658 return ndlp; 5659 } 5660 5661 struct lpfc_nodelist * 5662 lpfc_findnode_mapped(struct lpfc_vport *vport) 5663 { 5664 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 5665 struct lpfc_nodelist *ndlp; 5666 uint32_t data1; 5667 unsigned long iflags; 5668 5669 spin_lock_irqsave(shost->host_lock, iflags); 5670 5671 list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) { 5672 if (ndlp->nlp_state == NLP_STE_UNMAPPED_NODE || 5673 ndlp->nlp_state == NLP_STE_MAPPED_NODE) { 5674 data1 = (((uint32_t)ndlp->nlp_state << 24) | 5675 ((uint32_t)ndlp->nlp_xri << 16) | 5676 ((uint32_t)ndlp->nlp_type << 8) | 5677 ((uint32_t)ndlp->nlp_rpi & 0xff)); 5678 spin_unlock_irqrestore(shost->host_lock, iflags); 5679 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE, 5680 "2025 FIND node DID " 5681 "Data: x%px x%x x%x x%x x%px\n", 5682 ndlp, ndlp->nlp_DID, 5683 ndlp->nlp_flag, data1, 5684 ndlp->active_rrqs_xri_bitmap); 5685 return ndlp; 5686 } 5687 } 5688 spin_unlock_irqrestore(shost->host_lock, iflags); 5689 5690 /* FIND node did <did> NOT FOUND */ 5691 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE, 5692 "2026 FIND mapped did NOT FOUND.\n"); 5693 return NULL; 5694 } 5695 5696 struct lpfc_nodelist * 5697 lpfc_setup_disc_node(struct lpfc_vport *vport, uint32_t did) 5698 { 5699 struct lpfc_nodelist *ndlp; 5700 5701 ndlp = lpfc_findnode_did(vport, did); 5702 if (!ndlp) { 5703 if (vport->phba->nvmet_support) 5704 return NULL; 5705 if ((vport->fc_flag & FC_RSCN_MODE) != 0 && 5706 lpfc_rscn_payload_check(vport, did) == 0) 5707 return NULL; 5708 ndlp = lpfc_nlp_init(vport, did); 5709 if (!ndlp) 5710 return NULL; 5711 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE); 5712 5713 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, 5714 "6453 Setup New Node 2B_DISC x%x " 5715 "Data:x%x x%x x%x\n", 5716 ndlp->nlp_DID, ndlp->nlp_flag, 5717 ndlp->nlp_state, vport->fc_flag); 5718 5719 spin_lock_irq(&ndlp->lock); 5720 ndlp->nlp_flag |= NLP_NPR_2B_DISC; 5721 spin_unlock_irq(&ndlp->lock); 5722 return ndlp; 5723 } 5724 5725 /* The NVME Target does not want to actively manage an rport. 5726 * The goal is to allow the target to reset its state and clear 5727 * pending IO in preparation for the initiator to recover. 5728 */ 5729 if ((vport->fc_flag & FC_RSCN_MODE) && 5730 !(vport->fc_flag & FC_NDISC_ACTIVE)) { 5731 if (lpfc_rscn_payload_check(vport, did)) { 5732 5733 /* Since this node is marked for discovery, 5734 * delay timeout is not needed. 5735 */ 5736 lpfc_cancel_retry_delay_tmo(vport, ndlp); 5737 5738 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, 5739 "6455 Setup RSCN Node 2B_DISC x%x " 5740 "Data:x%x x%x x%x\n", 5741 ndlp->nlp_DID, ndlp->nlp_flag, 5742 ndlp->nlp_state, vport->fc_flag); 5743 5744 /* NVME Target mode waits until rport is known to be 5745 * impacted by the RSCN before it transitions. No 5746 * active management - just go to NPR provided the 5747 * node had a valid login. 5748 */ 5749 if (vport->phba->nvmet_support) 5750 return ndlp; 5751 5752 /* If we've already received a PLOGI from this NPort 5753 * we don't need to try to discover it again. 5754 */ 5755 if (ndlp->nlp_flag & NLP_RCV_PLOGI && 5756 !(ndlp->nlp_type & 5757 (NLP_FCP_TARGET | NLP_NVME_TARGET))) 5758 return NULL; 5759 5760 lpfc_disc_state_machine(vport, ndlp, NULL, 5761 NLP_EVT_DEVICE_RECOVERY); 5762 5763 spin_lock_irq(&ndlp->lock); 5764 ndlp->nlp_flag |= NLP_NPR_2B_DISC; 5765 spin_unlock_irq(&ndlp->lock); 5766 } else { 5767 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, 5768 "6456 Skip Setup RSCN Node x%x " 5769 "Data:x%x x%x x%x\n", 5770 ndlp->nlp_DID, ndlp->nlp_flag, 5771 ndlp->nlp_state, vport->fc_flag); 5772 ndlp = NULL; 5773 } 5774 } else { 5775 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, 5776 "6457 Setup Active Node 2B_DISC x%x " 5777 "Data:x%x x%x x%x\n", 5778 ndlp->nlp_DID, ndlp->nlp_flag, 5779 ndlp->nlp_state, vport->fc_flag); 5780 5781 /* If the initiator received a PLOGI from this NPort or if the 5782 * initiator is already in the process of discovery on it, 5783 * there's no need to try to discover it again. 5784 */ 5785 if (ndlp->nlp_state == NLP_STE_ADISC_ISSUE || 5786 ndlp->nlp_state == NLP_STE_PLOGI_ISSUE || 5787 (!vport->phba->nvmet_support && 5788 ndlp->nlp_flag & NLP_RCV_PLOGI)) 5789 return NULL; 5790 5791 if (vport->phba->nvmet_support) 5792 return ndlp; 5793 5794 /* Moving to NPR state clears unsolicited flags and 5795 * allows for rediscovery 5796 */ 5797 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE); 5798 5799 spin_lock_irq(&ndlp->lock); 5800 ndlp->nlp_flag |= NLP_NPR_2B_DISC; 5801 spin_unlock_irq(&ndlp->lock); 5802 } 5803 return ndlp; 5804 } 5805 5806 /* Build a list of nodes to discover based on the loopmap */ 5807 void 5808 lpfc_disc_list_loopmap(struct lpfc_vport *vport) 5809 { 5810 struct lpfc_hba *phba = vport->phba; 5811 int j; 5812 uint32_t alpa, index; 5813 5814 if (!lpfc_is_link_up(phba)) 5815 return; 5816 5817 if (phba->fc_topology != LPFC_TOPOLOGY_LOOP) 5818 return; 5819 5820 /* Check for loop map present or not */ 5821 if (phba->alpa_map[0]) { 5822 for (j = 1; j <= phba->alpa_map[0]; j++) { 5823 alpa = phba->alpa_map[j]; 5824 if (((vport->fc_myDID & 0xff) == alpa) || (alpa == 0)) 5825 continue; 5826 lpfc_setup_disc_node(vport, alpa); 5827 } 5828 } else { 5829 /* No alpamap, so try all alpa's */ 5830 for (j = 0; j < FC_MAXLOOP; j++) { 5831 /* If cfg_scan_down is set, start from highest 5832 * ALPA (0xef) to lowest (0x1). 5833 */ 5834 if (vport->cfg_scan_down) 5835 index = j; 5836 else 5837 index = FC_MAXLOOP - j - 1; 5838 alpa = lpfcAlpaArray[index]; 5839 if ((vport->fc_myDID & 0xff) == alpa) 5840 continue; 5841 lpfc_setup_disc_node(vport, alpa); 5842 } 5843 } 5844 return; 5845 } 5846 5847 /* SLI3 only */ 5848 void 5849 lpfc_issue_clear_la(struct lpfc_hba *phba, struct lpfc_vport *vport) 5850 { 5851 LPFC_MBOXQ_t *mbox; 5852 struct lpfc_sli *psli = &phba->sli; 5853 struct lpfc_sli_ring *extra_ring = &psli->sli3_ring[LPFC_EXTRA_RING]; 5854 struct lpfc_sli_ring *fcp_ring = &psli->sli3_ring[LPFC_FCP_RING]; 5855 int rc; 5856 5857 /* 5858 * if it's not a physical port or if we already send 5859 * clear_la then don't send it. 5860 */ 5861 if ((phba->link_state >= LPFC_CLEAR_LA) || 5862 (vport->port_type != LPFC_PHYSICAL_PORT) || 5863 (phba->sli_rev == LPFC_SLI_REV4)) 5864 return; 5865 5866 /* Link up discovery */ 5867 if ((mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL)) != NULL) { 5868 phba->link_state = LPFC_CLEAR_LA; 5869 lpfc_clear_la(phba, mbox); 5870 mbox->mbox_cmpl = lpfc_mbx_cmpl_clear_la; 5871 mbox->vport = vport; 5872 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT); 5873 if (rc == MBX_NOT_FINISHED) { 5874 mempool_free(mbox, phba->mbox_mem_pool); 5875 lpfc_disc_flush_list(vport); 5876 extra_ring->flag &= ~LPFC_STOP_IOCB_EVENT; 5877 fcp_ring->flag &= ~LPFC_STOP_IOCB_EVENT; 5878 phba->link_state = LPFC_HBA_ERROR; 5879 } 5880 } 5881 } 5882 5883 /* Reg_vpi to tell firmware to resume normal operations */ 5884 void 5885 lpfc_issue_reg_vpi(struct lpfc_hba *phba, struct lpfc_vport *vport) 5886 { 5887 LPFC_MBOXQ_t *regvpimbox; 5888 5889 regvpimbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 5890 if (regvpimbox) { 5891 lpfc_reg_vpi(vport, regvpimbox); 5892 regvpimbox->mbox_cmpl = lpfc_mbx_cmpl_reg_vpi; 5893 regvpimbox->vport = vport; 5894 if (lpfc_sli_issue_mbox(phba, regvpimbox, MBX_NOWAIT) 5895 == MBX_NOT_FINISHED) { 5896 mempool_free(regvpimbox, phba->mbox_mem_pool); 5897 } 5898 } 5899 } 5900 5901 /* Start Link up / RSCN discovery on NPR nodes */ 5902 void 5903 lpfc_disc_start(struct lpfc_vport *vport) 5904 { 5905 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 5906 struct lpfc_hba *phba = vport->phba; 5907 uint32_t num_sent; 5908 uint32_t clear_la_pending; 5909 5910 if (!lpfc_is_link_up(phba)) { 5911 lpfc_printf_vlog(vport, KERN_INFO, LOG_SLI, 5912 "3315 Link is not up %x\n", 5913 phba->link_state); 5914 return; 5915 } 5916 5917 if (phba->link_state == LPFC_CLEAR_LA) 5918 clear_la_pending = 1; 5919 else 5920 clear_la_pending = 0; 5921 5922 if (vport->port_state < LPFC_VPORT_READY) 5923 vport->port_state = LPFC_DISC_AUTH; 5924 5925 lpfc_set_disctmo(vport); 5926 5927 vport->fc_prevDID = vport->fc_myDID; 5928 vport->num_disc_nodes = 0; 5929 5930 /* Start Discovery state <hba_state> */ 5931 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, 5932 "0202 Start Discovery port state x%x " 5933 "flg x%x Data: x%x x%x x%x\n", 5934 vport->port_state, vport->fc_flag, vport->fc_plogi_cnt, 5935 vport->fc_adisc_cnt, vport->fc_npr_cnt); 5936 5937 /* First do ADISCs - if any */ 5938 num_sent = lpfc_els_disc_adisc(vport); 5939 5940 if (num_sent) 5941 return; 5942 5943 /* Register the VPI for SLI3, NPIV only. */ 5944 if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) && 5945 !(vport->fc_flag & FC_PT2PT) && 5946 !(vport->fc_flag & FC_RSCN_MODE) && 5947 (phba->sli_rev < LPFC_SLI_REV4)) { 5948 lpfc_issue_clear_la(phba, vport); 5949 lpfc_issue_reg_vpi(phba, vport); 5950 return; 5951 } 5952 5953 /* 5954 * For SLI2, we need to set port_state to READY and continue 5955 * discovery. 5956 */ 5957 if (vport->port_state < LPFC_VPORT_READY && !clear_la_pending) { 5958 /* If we get here, there is nothing to ADISC */ 5959 lpfc_issue_clear_la(phba, vport); 5960 5961 if (!(vport->fc_flag & FC_ABORT_DISCOVERY)) { 5962 vport->num_disc_nodes = 0; 5963 /* go thru NPR nodes and issue ELS PLOGIs */ 5964 if (vport->fc_npr_cnt) 5965 lpfc_els_disc_plogi(vport); 5966 5967 if (!vport->num_disc_nodes) { 5968 spin_lock_irq(shost->host_lock); 5969 vport->fc_flag &= ~FC_NDISC_ACTIVE; 5970 spin_unlock_irq(shost->host_lock); 5971 lpfc_can_disctmo(vport); 5972 } 5973 } 5974 vport->port_state = LPFC_VPORT_READY; 5975 } else { 5976 /* Next do PLOGIs - if any */ 5977 num_sent = lpfc_els_disc_plogi(vport); 5978 5979 if (num_sent) 5980 return; 5981 5982 if (vport->fc_flag & FC_RSCN_MODE) { 5983 /* Check to see if more RSCNs came in while we 5984 * were processing this one. 5985 */ 5986 if ((vport->fc_rscn_id_cnt == 0) && 5987 (!(vport->fc_flag & FC_RSCN_DISCOVERY))) { 5988 spin_lock_irq(shost->host_lock); 5989 vport->fc_flag &= ~FC_RSCN_MODE; 5990 spin_unlock_irq(shost->host_lock); 5991 lpfc_can_disctmo(vport); 5992 } else 5993 lpfc_els_handle_rscn(vport); 5994 } 5995 } 5996 return; 5997 } 5998 5999 /* 6000 * Ignore completion for all IOCBs on tx and txcmpl queue for ELS 6001 * ring the match the sppecified nodelist. 6002 */ 6003 static void 6004 lpfc_free_tx(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp) 6005 { 6006 LIST_HEAD(completions); 6007 struct lpfc_iocbq *iocb, *next_iocb; 6008 struct lpfc_sli_ring *pring; 6009 u32 ulp_command; 6010 6011 pring = lpfc_phba_elsring(phba); 6012 if (unlikely(!pring)) 6013 return; 6014 6015 /* Error matching iocb on txq or txcmplq 6016 * First check the txq. 6017 */ 6018 spin_lock_irq(&phba->hbalock); 6019 list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) { 6020 if (iocb->ndlp != ndlp) 6021 continue; 6022 6023 ulp_command = get_job_cmnd(phba, iocb); 6024 6025 if (ulp_command == CMD_ELS_REQUEST64_CR || 6026 ulp_command == CMD_XMIT_ELS_RSP64_CX) { 6027 6028 list_move_tail(&iocb->list, &completions); 6029 } 6030 } 6031 6032 /* Next check the txcmplq */ 6033 list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq, list) { 6034 if (iocb->ndlp != ndlp) 6035 continue; 6036 6037 ulp_command = get_job_cmnd(phba, iocb); 6038 6039 if (ulp_command == CMD_ELS_REQUEST64_CR || 6040 ulp_command == CMD_XMIT_ELS_RSP64_CX) { 6041 lpfc_sli_issue_abort_iotag(phba, pring, iocb, NULL); 6042 } 6043 } 6044 spin_unlock_irq(&phba->hbalock); 6045 6046 /* Make sure HBA is alive */ 6047 lpfc_issue_hb_tmo(phba); 6048 6049 /* Cancel all the IOCBs from the completions list */ 6050 lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT, 6051 IOERR_SLI_ABORTED); 6052 } 6053 6054 static void 6055 lpfc_disc_flush_list(struct lpfc_vport *vport) 6056 { 6057 struct lpfc_nodelist *ndlp, *next_ndlp; 6058 struct lpfc_hba *phba = vport->phba; 6059 6060 if (vport->fc_plogi_cnt || vport->fc_adisc_cnt) { 6061 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, 6062 nlp_listp) { 6063 if (ndlp->nlp_state == NLP_STE_PLOGI_ISSUE || 6064 ndlp->nlp_state == NLP_STE_ADISC_ISSUE) { 6065 lpfc_free_tx(phba, ndlp); 6066 } 6067 } 6068 } 6069 } 6070 6071 /* 6072 * lpfc_notify_xport_npr - notifies xport of node disappearance 6073 * @vport: Pointer to Virtual Port object. 6074 * 6075 * Transitions all ndlps to NPR state. When lpfc_nlp_set_state 6076 * calls lpfc_nlp_state_cleanup, the ndlp->rport is unregistered 6077 * and transport notified that the node is gone. 6078 * Return Code: 6079 * none 6080 */ 6081 static void 6082 lpfc_notify_xport_npr(struct lpfc_vport *vport) 6083 { 6084 struct lpfc_nodelist *ndlp, *next_ndlp; 6085 6086 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, 6087 nlp_listp) { 6088 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE); 6089 } 6090 } 6091 void 6092 lpfc_cleanup_discovery_resources(struct lpfc_vport *vport) 6093 { 6094 lpfc_els_flush_rscn(vport); 6095 lpfc_els_flush_cmd(vport); 6096 lpfc_disc_flush_list(vport); 6097 if (pci_channel_offline(vport->phba->pcidev)) 6098 lpfc_notify_xport_npr(vport); 6099 } 6100 6101 /*****************************************************************************/ 6102 /* 6103 * NAME: lpfc_disc_timeout 6104 * 6105 * FUNCTION: Fibre Channel driver discovery timeout routine. 6106 * 6107 * EXECUTION ENVIRONMENT: interrupt only 6108 * 6109 * CALLED FROM: 6110 * Timer function 6111 * 6112 * RETURNS: 6113 * none 6114 */ 6115 /*****************************************************************************/ 6116 void 6117 lpfc_disc_timeout(struct timer_list *t) 6118 { 6119 struct lpfc_vport *vport = from_timer(vport, t, fc_disctmo); 6120 struct lpfc_hba *phba = vport->phba; 6121 uint32_t tmo_posted; 6122 unsigned long flags = 0; 6123 6124 if (unlikely(!phba)) 6125 return; 6126 6127 spin_lock_irqsave(&vport->work_port_lock, flags); 6128 tmo_posted = vport->work_port_events & WORKER_DISC_TMO; 6129 if (!tmo_posted) 6130 vport->work_port_events |= WORKER_DISC_TMO; 6131 spin_unlock_irqrestore(&vport->work_port_lock, flags); 6132 6133 if (!tmo_posted) 6134 lpfc_worker_wake_up(phba); 6135 return; 6136 } 6137 6138 static void 6139 lpfc_disc_timeout_handler(struct lpfc_vport *vport) 6140 { 6141 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 6142 struct lpfc_hba *phba = vport->phba; 6143 struct lpfc_sli *psli = &phba->sli; 6144 struct lpfc_nodelist *ndlp, *next_ndlp; 6145 LPFC_MBOXQ_t *initlinkmbox; 6146 int rc, clrlaerr = 0; 6147 6148 if (!(vport->fc_flag & FC_DISC_TMO)) 6149 return; 6150 6151 spin_lock_irq(shost->host_lock); 6152 vport->fc_flag &= ~FC_DISC_TMO; 6153 spin_unlock_irq(shost->host_lock); 6154 6155 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, 6156 "disc timeout: state:x%x rtry:x%x flg:x%x", 6157 vport->port_state, vport->fc_ns_retry, vport->fc_flag); 6158 6159 switch (vport->port_state) { 6160 6161 case LPFC_LOCAL_CFG_LINK: 6162 /* 6163 * port_state is identically LPFC_LOCAL_CFG_LINK while 6164 * waiting for FAN timeout 6165 */ 6166 lpfc_printf_vlog(vport, KERN_WARNING, LOG_DISCOVERY, 6167 "0221 FAN timeout\n"); 6168 6169 /* Start discovery by sending FLOGI, clean up old rpis */ 6170 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, 6171 nlp_listp) { 6172 if (ndlp->nlp_state != NLP_STE_NPR_NODE) 6173 continue; 6174 if (ndlp->nlp_type & NLP_FABRIC) { 6175 /* Clean up the ndlp on Fabric connections */ 6176 lpfc_drop_node(vport, ndlp); 6177 6178 } else if (!(ndlp->nlp_flag & NLP_NPR_ADISC)) { 6179 /* Fail outstanding IO now since device 6180 * is marked for PLOGI. 6181 */ 6182 lpfc_unreg_rpi(vport, ndlp); 6183 } 6184 } 6185 if (vport->port_state != LPFC_FLOGI) { 6186 if (phba->sli_rev <= LPFC_SLI_REV3) 6187 lpfc_initial_flogi(vport); 6188 else 6189 lpfc_issue_init_vfi(vport); 6190 return; 6191 } 6192 break; 6193 6194 case LPFC_FDISC: 6195 case LPFC_FLOGI: 6196 /* port_state is identically LPFC_FLOGI while waiting for FLOGI cmpl */ 6197 /* Initial FLOGI timeout */ 6198 lpfc_printf_vlog(vport, KERN_ERR, 6199 LOG_TRACE_EVENT, 6200 "0222 Initial %s timeout\n", 6201 vport->vpi ? "FDISC" : "FLOGI"); 6202 6203 /* Assume no Fabric and go on with discovery. 6204 * Check for outstanding ELS FLOGI to abort. 6205 */ 6206 6207 /* FLOGI failed, so just use loop map to make discovery list */ 6208 lpfc_disc_list_loopmap(vport); 6209 6210 /* Start discovery */ 6211 lpfc_disc_start(vport); 6212 break; 6213 6214 case LPFC_FABRIC_CFG_LINK: 6215 /* hba_state is identically LPFC_FABRIC_CFG_LINK while waiting for 6216 NameServer login */ 6217 lpfc_printf_vlog(vport, KERN_ERR, 6218 LOG_TRACE_EVENT, 6219 "0223 Timeout while waiting for " 6220 "NameServer login\n"); 6221 /* Next look for NameServer ndlp */ 6222 ndlp = lpfc_findnode_did(vport, NameServer_DID); 6223 if (ndlp) 6224 lpfc_els_abort(phba, ndlp); 6225 6226 /* ReStart discovery */ 6227 goto restart_disc; 6228 6229 case LPFC_NS_QRY: 6230 /* Check for wait for NameServer Rsp timeout */ 6231 lpfc_printf_vlog(vport, KERN_ERR, 6232 LOG_TRACE_EVENT, 6233 "0224 NameServer Query timeout " 6234 "Data: x%x x%x\n", 6235 vport->fc_ns_retry, LPFC_MAX_NS_RETRY); 6236 6237 if (vport->fc_ns_retry < LPFC_MAX_NS_RETRY) { 6238 /* Try it one more time */ 6239 vport->fc_ns_retry++; 6240 vport->gidft_inp = 0; 6241 rc = lpfc_issue_gidft(vport); 6242 if (rc == 0) 6243 break; 6244 } 6245 vport->fc_ns_retry = 0; 6246 6247 restart_disc: 6248 /* 6249 * Discovery is over. 6250 * set port_state to PORT_READY if SLI2. 6251 * cmpl_reg_vpi will set port_state to READY for SLI3. 6252 */ 6253 if (phba->sli_rev < LPFC_SLI_REV4) { 6254 if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) 6255 lpfc_issue_reg_vpi(phba, vport); 6256 else { 6257 lpfc_issue_clear_la(phba, vport); 6258 vport->port_state = LPFC_VPORT_READY; 6259 } 6260 } 6261 6262 /* Setup and issue mailbox INITIALIZE LINK command */ 6263 initlinkmbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 6264 if (!initlinkmbox) { 6265 lpfc_printf_vlog(vport, KERN_ERR, 6266 LOG_TRACE_EVENT, 6267 "0206 Device Discovery " 6268 "completion error\n"); 6269 phba->link_state = LPFC_HBA_ERROR; 6270 break; 6271 } 6272 6273 lpfc_linkdown(phba); 6274 lpfc_init_link(phba, initlinkmbox, phba->cfg_topology, 6275 phba->cfg_link_speed); 6276 initlinkmbox->u.mb.un.varInitLnk.lipsr_AL_PA = 0; 6277 initlinkmbox->vport = vport; 6278 initlinkmbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl; 6279 rc = lpfc_sli_issue_mbox(phba, initlinkmbox, MBX_NOWAIT); 6280 lpfc_set_loopback_flag(phba); 6281 if (rc == MBX_NOT_FINISHED) 6282 mempool_free(initlinkmbox, phba->mbox_mem_pool); 6283 6284 break; 6285 6286 case LPFC_DISC_AUTH: 6287 /* Node Authentication timeout */ 6288 lpfc_printf_vlog(vport, KERN_ERR, 6289 LOG_TRACE_EVENT, 6290 "0227 Node Authentication timeout\n"); 6291 lpfc_disc_flush_list(vport); 6292 6293 /* 6294 * set port_state to PORT_READY if SLI2. 6295 * cmpl_reg_vpi will set port_state to READY for SLI3. 6296 */ 6297 if (phba->sli_rev < LPFC_SLI_REV4) { 6298 if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) 6299 lpfc_issue_reg_vpi(phba, vport); 6300 else { /* NPIV Not enabled */ 6301 lpfc_issue_clear_la(phba, vport); 6302 vport->port_state = LPFC_VPORT_READY; 6303 } 6304 } 6305 break; 6306 6307 case LPFC_VPORT_READY: 6308 if (vport->fc_flag & FC_RSCN_MODE) { 6309 lpfc_printf_vlog(vport, KERN_ERR, 6310 LOG_TRACE_EVENT, 6311 "0231 RSCN timeout Data: x%x " 6312 "x%x x%x x%x\n", 6313 vport->fc_ns_retry, LPFC_MAX_NS_RETRY, 6314 vport->port_state, vport->gidft_inp); 6315 6316 /* Cleanup any outstanding ELS commands */ 6317 lpfc_els_flush_cmd(vport); 6318 6319 lpfc_els_flush_rscn(vport); 6320 lpfc_disc_flush_list(vport); 6321 } 6322 break; 6323 6324 default: 6325 lpfc_printf_vlog(vport, KERN_ERR, 6326 LOG_TRACE_EVENT, 6327 "0273 Unexpected discovery timeout, " 6328 "vport State x%x\n", vport->port_state); 6329 break; 6330 } 6331 6332 switch (phba->link_state) { 6333 case LPFC_CLEAR_LA: 6334 /* CLEAR LA timeout */ 6335 lpfc_printf_vlog(vport, KERN_ERR, 6336 LOG_TRACE_EVENT, 6337 "0228 CLEAR LA timeout\n"); 6338 clrlaerr = 1; 6339 break; 6340 6341 case LPFC_LINK_UP: 6342 lpfc_issue_clear_la(phba, vport); 6343 fallthrough; 6344 case LPFC_LINK_UNKNOWN: 6345 case LPFC_WARM_START: 6346 case LPFC_INIT_START: 6347 case LPFC_INIT_MBX_CMDS: 6348 case LPFC_LINK_DOWN: 6349 case LPFC_HBA_ERROR: 6350 lpfc_printf_vlog(vport, KERN_ERR, 6351 LOG_TRACE_EVENT, 6352 "0230 Unexpected timeout, hba link " 6353 "state x%x\n", phba->link_state); 6354 clrlaerr = 1; 6355 break; 6356 6357 case LPFC_HBA_READY: 6358 break; 6359 } 6360 6361 if (clrlaerr) { 6362 lpfc_disc_flush_list(vport); 6363 if (phba->sli_rev != LPFC_SLI_REV4) { 6364 psli->sli3_ring[(LPFC_EXTRA_RING)].flag &= 6365 ~LPFC_STOP_IOCB_EVENT; 6366 psli->sli3_ring[LPFC_FCP_RING].flag &= 6367 ~LPFC_STOP_IOCB_EVENT; 6368 } 6369 vport->port_state = LPFC_VPORT_READY; 6370 } 6371 return; 6372 } 6373 6374 /* 6375 * This routine handles processing a NameServer REG_LOGIN mailbox 6376 * command upon completion. It is setup in the LPFC_MBOXQ 6377 * as the completion routine when the command is 6378 * handed off to the SLI layer. 6379 */ 6380 void 6381 lpfc_mbx_cmpl_fdmi_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 6382 { 6383 MAILBOX_t *mb = &pmb->u.mb; 6384 struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *)pmb->ctx_ndlp; 6385 struct lpfc_vport *vport = pmb->vport; 6386 6387 pmb->ctx_ndlp = NULL; 6388 6389 if (phba->sli_rev < LPFC_SLI_REV4) 6390 ndlp->nlp_rpi = mb->un.varWords[0]; 6391 ndlp->nlp_flag |= NLP_RPI_REGISTERED; 6392 ndlp->nlp_type |= NLP_FABRIC; 6393 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE); 6394 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE | LOG_DISCOVERY, 6395 "0004 rpi:%x DID:%x flg:%x %d x%px\n", 6396 ndlp->nlp_rpi, ndlp->nlp_DID, ndlp->nlp_flag, 6397 kref_read(&ndlp->kref), 6398 ndlp); 6399 /* 6400 * Start issuing Fabric-Device Management Interface (FDMI) command to 6401 * 0xfffffa (FDMI well known port). 6402 * DHBA -> DPRT -> RHBA -> RPA (physical port) 6403 * DPRT -> RPRT (vports) 6404 */ 6405 if (vport->port_type == LPFC_PHYSICAL_PORT) { 6406 phba->link_flag &= ~LS_CT_VEN_RPA; /* For extra Vendor RPA */ 6407 lpfc_fdmi_cmd(vport, ndlp, SLI_MGMT_DHBA, 0); 6408 } else { 6409 lpfc_fdmi_cmd(vport, ndlp, SLI_MGMT_DPRT, 0); 6410 } 6411 6412 6413 /* decrement the node reference count held for this callback 6414 * function. 6415 */ 6416 lpfc_nlp_put(ndlp); 6417 lpfc_mbox_rsrc_cleanup(phba, pmb, MBOX_THD_UNLOCKED); 6418 return; 6419 } 6420 6421 static int 6422 lpfc_filter_by_rpi(struct lpfc_nodelist *ndlp, void *param) 6423 { 6424 uint16_t *rpi = param; 6425 6426 return ndlp->nlp_rpi == *rpi; 6427 } 6428 6429 static int 6430 lpfc_filter_by_wwpn(struct lpfc_nodelist *ndlp, void *param) 6431 { 6432 return memcmp(&ndlp->nlp_portname, param, 6433 sizeof(ndlp->nlp_portname)) == 0; 6434 } 6435 6436 static struct lpfc_nodelist * 6437 __lpfc_find_node(struct lpfc_vport *vport, node_filter filter, void *param) 6438 { 6439 struct lpfc_nodelist *ndlp; 6440 6441 list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) { 6442 if (filter(ndlp, param)) { 6443 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE, 6444 "3185 FIND node filter %ps DID " 6445 "ndlp x%px did x%x flg x%x st x%x " 6446 "xri x%x type x%x rpi x%x\n", 6447 filter, ndlp, ndlp->nlp_DID, 6448 ndlp->nlp_flag, ndlp->nlp_state, 6449 ndlp->nlp_xri, ndlp->nlp_type, 6450 ndlp->nlp_rpi); 6451 return ndlp; 6452 } 6453 } 6454 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE, 6455 "3186 FIND node filter %ps NOT FOUND.\n", filter); 6456 return NULL; 6457 } 6458 6459 /* 6460 * This routine looks up the ndlp lists for the given RPI. If rpi found it 6461 * returns the node list element pointer else return NULL. 6462 */ 6463 struct lpfc_nodelist * 6464 __lpfc_findnode_rpi(struct lpfc_vport *vport, uint16_t rpi) 6465 { 6466 return __lpfc_find_node(vport, lpfc_filter_by_rpi, &rpi); 6467 } 6468 6469 /* 6470 * This routine looks up the ndlp lists for the given WWPN. If WWPN found it 6471 * returns the node element list pointer else return NULL. 6472 */ 6473 struct lpfc_nodelist * 6474 lpfc_findnode_wwpn(struct lpfc_vport *vport, struct lpfc_name *wwpn) 6475 { 6476 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 6477 struct lpfc_nodelist *ndlp; 6478 6479 spin_lock_irq(shost->host_lock); 6480 ndlp = __lpfc_find_node(vport, lpfc_filter_by_wwpn, wwpn); 6481 spin_unlock_irq(shost->host_lock); 6482 return ndlp; 6483 } 6484 6485 /* 6486 * This routine looks up the ndlp lists for the given RPI. If the rpi 6487 * is found, the routine returns the node element list pointer else 6488 * return NULL. 6489 */ 6490 struct lpfc_nodelist * 6491 lpfc_findnode_rpi(struct lpfc_vport *vport, uint16_t rpi) 6492 { 6493 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 6494 struct lpfc_nodelist *ndlp; 6495 unsigned long flags; 6496 6497 spin_lock_irqsave(shost->host_lock, flags); 6498 ndlp = __lpfc_findnode_rpi(vport, rpi); 6499 spin_unlock_irqrestore(shost->host_lock, flags); 6500 return ndlp; 6501 } 6502 6503 /** 6504 * lpfc_find_vport_by_vpid - Find a vport on a HBA through vport identifier 6505 * @phba: pointer to lpfc hba data structure. 6506 * @vpi: the physical host virtual N_Port identifier. 6507 * 6508 * This routine finds a vport on a HBA (referred by @phba) through a 6509 * @vpi. The function walks the HBA's vport list and returns the address 6510 * of the vport with the matching @vpi. 6511 * 6512 * Return code 6513 * NULL - No vport with the matching @vpi found 6514 * Otherwise - Address to the vport with the matching @vpi. 6515 **/ 6516 struct lpfc_vport * 6517 lpfc_find_vport_by_vpid(struct lpfc_hba *phba, uint16_t vpi) 6518 { 6519 struct lpfc_vport *vport; 6520 unsigned long flags; 6521 int i = 0; 6522 6523 /* The physical ports are always vpi 0 - translate is unnecessary. */ 6524 if (vpi > 0) { 6525 /* 6526 * Translate the physical vpi to the logical vpi. The 6527 * vport stores the logical vpi. 6528 */ 6529 for (i = 0; i <= phba->max_vpi; i++) { 6530 if (vpi == phba->vpi_ids[i]) 6531 break; 6532 } 6533 6534 if (i > phba->max_vpi) { 6535 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 6536 "2936 Could not find Vport mapped " 6537 "to vpi %d\n", vpi); 6538 return NULL; 6539 } 6540 } 6541 6542 spin_lock_irqsave(&phba->port_list_lock, flags); 6543 list_for_each_entry(vport, &phba->port_list, listentry) { 6544 if (vport->vpi == i) { 6545 spin_unlock_irqrestore(&phba->port_list_lock, flags); 6546 return vport; 6547 } 6548 } 6549 spin_unlock_irqrestore(&phba->port_list_lock, flags); 6550 return NULL; 6551 } 6552 6553 struct lpfc_nodelist * 6554 lpfc_nlp_init(struct lpfc_vport *vport, uint32_t did) 6555 { 6556 struct lpfc_nodelist *ndlp; 6557 int rpi = LPFC_RPI_ALLOC_ERROR; 6558 6559 if (vport->phba->sli_rev == LPFC_SLI_REV4) { 6560 rpi = lpfc_sli4_alloc_rpi(vport->phba); 6561 if (rpi == LPFC_RPI_ALLOC_ERROR) 6562 return NULL; 6563 } 6564 6565 ndlp = mempool_alloc(vport->phba->nlp_mem_pool, GFP_KERNEL); 6566 if (!ndlp) { 6567 if (vport->phba->sli_rev == LPFC_SLI_REV4) 6568 lpfc_sli4_free_rpi(vport->phba, rpi); 6569 return NULL; 6570 } 6571 6572 memset(ndlp, 0, sizeof (struct lpfc_nodelist)); 6573 6574 spin_lock_init(&ndlp->lock); 6575 6576 lpfc_initialize_node(vport, ndlp, did); 6577 INIT_LIST_HEAD(&ndlp->nlp_listp); 6578 if (vport->phba->sli_rev == LPFC_SLI_REV4) { 6579 ndlp->nlp_rpi = rpi; 6580 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE | LOG_DISCOVERY, 6581 "0007 Init New ndlp x%px, rpi:x%x DID:%x " 6582 "flg:x%x refcnt:%d\n", 6583 ndlp, ndlp->nlp_rpi, ndlp->nlp_DID, 6584 ndlp->nlp_flag, kref_read(&ndlp->kref)); 6585 6586 ndlp->active_rrqs_xri_bitmap = 6587 mempool_alloc(vport->phba->active_rrq_pool, 6588 GFP_KERNEL); 6589 if (ndlp->active_rrqs_xri_bitmap) 6590 memset(ndlp->active_rrqs_xri_bitmap, 0, 6591 ndlp->phba->cfg_rrq_xri_bitmap_sz); 6592 } 6593 6594 6595 6596 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE, 6597 "node init: did:x%x", 6598 ndlp->nlp_DID, 0, 0); 6599 6600 return ndlp; 6601 } 6602 6603 /* This routine releases all resources associated with a specifc NPort's ndlp 6604 * and mempool_free's the nodelist. 6605 */ 6606 static void 6607 lpfc_nlp_release(struct kref *kref) 6608 { 6609 struct lpfc_nodelist *ndlp = container_of(kref, struct lpfc_nodelist, 6610 kref); 6611 struct lpfc_vport *vport = ndlp->vport; 6612 6613 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE, 6614 "node release: did:x%x flg:x%x type:x%x", 6615 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type); 6616 6617 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE, 6618 "0279 %s: ndlp: x%px did %x refcnt:%d rpi:%x\n", 6619 __func__, ndlp, ndlp->nlp_DID, 6620 kref_read(&ndlp->kref), ndlp->nlp_rpi); 6621 6622 /* remove ndlp from action. */ 6623 lpfc_cancel_retry_delay_tmo(vport, ndlp); 6624 lpfc_cleanup_node(vport, ndlp); 6625 6626 /* Not all ELS transactions have registered the RPI with the port. 6627 * In these cases the rpi usage is temporary and the node is 6628 * released when the WQE is completed. Catch this case to free the 6629 * RPI to the pool. Because this node is in the release path, a lock 6630 * is unnecessary. All references are gone and the node has been 6631 * dequeued. 6632 */ 6633 if (ndlp->nlp_flag & NLP_RELEASE_RPI) { 6634 if (ndlp->nlp_rpi != LPFC_RPI_ALLOC_ERROR && 6635 !(ndlp->nlp_flag & (NLP_RPI_REGISTERED | NLP_UNREG_INP))) { 6636 lpfc_sli4_free_rpi(vport->phba, ndlp->nlp_rpi); 6637 ndlp->nlp_rpi = LPFC_RPI_ALLOC_ERROR; 6638 } 6639 } 6640 6641 /* The node is not freed back to memory, it is released to a pool so 6642 * the node fields need to be cleaned up. 6643 */ 6644 ndlp->vport = NULL; 6645 ndlp->nlp_state = NLP_STE_FREED_NODE; 6646 ndlp->nlp_flag = 0; 6647 ndlp->fc4_xpt_flags = 0; 6648 6649 /* free ndlp memory for final ndlp release */ 6650 if (ndlp->phba->sli_rev == LPFC_SLI_REV4) 6651 mempool_free(ndlp->active_rrqs_xri_bitmap, 6652 ndlp->phba->active_rrq_pool); 6653 mempool_free(ndlp, ndlp->phba->nlp_mem_pool); 6654 } 6655 6656 /* This routine bumps the reference count for a ndlp structure to ensure 6657 * that one discovery thread won't free a ndlp while another discovery thread 6658 * is using it. 6659 */ 6660 struct lpfc_nodelist * 6661 lpfc_nlp_get(struct lpfc_nodelist *ndlp) 6662 { 6663 unsigned long flags; 6664 6665 if (ndlp) { 6666 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE, 6667 "node get: did:x%x flg:x%x refcnt:x%x", 6668 ndlp->nlp_DID, ndlp->nlp_flag, 6669 kref_read(&ndlp->kref)); 6670 6671 /* The check of ndlp usage to prevent incrementing the 6672 * ndlp reference count that is in the process of being 6673 * released. 6674 */ 6675 spin_lock_irqsave(&ndlp->lock, flags); 6676 if (!kref_get_unless_zero(&ndlp->kref)) { 6677 spin_unlock_irqrestore(&ndlp->lock, flags); 6678 lpfc_printf_vlog(ndlp->vport, KERN_WARNING, LOG_NODE, 6679 "0276 %s: ndlp:x%px refcnt:%d\n", 6680 __func__, (void *)ndlp, kref_read(&ndlp->kref)); 6681 return NULL; 6682 } 6683 spin_unlock_irqrestore(&ndlp->lock, flags); 6684 } else { 6685 WARN_ONCE(!ndlp, "**** %s, get ref on NULL ndlp!", __func__); 6686 } 6687 6688 return ndlp; 6689 } 6690 6691 /* This routine decrements the reference count for a ndlp structure. If the 6692 * count goes to 0, this indicates the associated nodelist should be freed. 6693 */ 6694 int 6695 lpfc_nlp_put(struct lpfc_nodelist *ndlp) 6696 { 6697 if (ndlp) { 6698 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE, 6699 "node put: did:x%x flg:x%x refcnt:x%x", 6700 ndlp->nlp_DID, ndlp->nlp_flag, 6701 kref_read(&ndlp->kref)); 6702 } else { 6703 WARN_ONCE(!ndlp, "**** %s, put ref on NULL ndlp!", __func__); 6704 } 6705 6706 return ndlp ? kref_put(&ndlp->kref, lpfc_nlp_release) : 0; 6707 } 6708 6709 /** 6710 * lpfc_fcf_inuse - Check if FCF can be unregistered. 6711 * @phba: Pointer to hba context object. 6712 * 6713 * This function iterate through all FC nodes associated 6714 * will all vports to check if there is any node with 6715 * fc_rports associated with it. If there is an fc_rport 6716 * associated with the node, then the node is either in 6717 * discovered state or its devloss_timer is pending. 6718 */ 6719 static int 6720 lpfc_fcf_inuse(struct lpfc_hba *phba) 6721 { 6722 struct lpfc_vport **vports; 6723 int i, ret = 0; 6724 struct lpfc_nodelist *ndlp; 6725 struct Scsi_Host *shost; 6726 6727 vports = lpfc_create_vport_work_array(phba); 6728 6729 /* If driver cannot allocate memory, indicate fcf is in use */ 6730 if (!vports) 6731 return 1; 6732 6733 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) { 6734 shost = lpfc_shost_from_vport(vports[i]); 6735 spin_lock_irq(shost->host_lock); 6736 /* 6737 * IF the CVL_RCVD bit is not set then we have sent the 6738 * flogi. 6739 * If dev_loss fires while we are waiting we do not want to 6740 * unreg the fcf. 6741 */ 6742 if (!(vports[i]->fc_flag & FC_VPORT_CVL_RCVD)) { 6743 spin_unlock_irq(shost->host_lock); 6744 ret = 1; 6745 goto out; 6746 } 6747 list_for_each_entry(ndlp, &vports[i]->fc_nodes, nlp_listp) { 6748 if (ndlp->rport && 6749 (ndlp->rport->roles & FC_RPORT_ROLE_FCP_TARGET)) { 6750 ret = 1; 6751 spin_unlock_irq(shost->host_lock); 6752 goto out; 6753 } else if (ndlp->nlp_flag & NLP_RPI_REGISTERED) { 6754 ret = 1; 6755 lpfc_printf_log(phba, KERN_INFO, 6756 LOG_NODE | LOG_DISCOVERY, 6757 "2624 RPI %x DID %x flag %x " 6758 "still logged in\n", 6759 ndlp->nlp_rpi, ndlp->nlp_DID, 6760 ndlp->nlp_flag); 6761 } 6762 } 6763 spin_unlock_irq(shost->host_lock); 6764 } 6765 out: 6766 lpfc_destroy_vport_work_array(phba, vports); 6767 return ret; 6768 } 6769 6770 /** 6771 * lpfc_unregister_vfi_cmpl - Completion handler for unreg vfi. 6772 * @phba: Pointer to hba context object. 6773 * @mboxq: Pointer to mailbox object. 6774 * 6775 * This function frees memory associated with the mailbox command. 6776 */ 6777 void 6778 lpfc_unregister_vfi_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq) 6779 { 6780 struct lpfc_vport *vport = mboxq->vport; 6781 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 6782 6783 if (mboxq->u.mb.mbxStatus) { 6784 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 6785 "2555 UNREG_VFI mbxStatus error x%x " 6786 "HBA state x%x\n", 6787 mboxq->u.mb.mbxStatus, vport->port_state); 6788 } 6789 spin_lock_irq(shost->host_lock); 6790 phba->pport->fc_flag &= ~FC_VFI_REGISTERED; 6791 spin_unlock_irq(shost->host_lock); 6792 mempool_free(mboxq, phba->mbox_mem_pool); 6793 return; 6794 } 6795 6796 /** 6797 * lpfc_unregister_fcfi_cmpl - Completion handler for unreg fcfi. 6798 * @phba: Pointer to hba context object. 6799 * @mboxq: Pointer to mailbox object. 6800 * 6801 * This function frees memory associated with the mailbox command. 6802 */ 6803 static void 6804 lpfc_unregister_fcfi_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq) 6805 { 6806 struct lpfc_vport *vport = mboxq->vport; 6807 6808 if (mboxq->u.mb.mbxStatus) { 6809 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 6810 "2550 UNREG_FCFI mbxStatus error x%x " 6811 "HBA state x%x\n", 6812 mboxq->u.mb.mbxStatus, vport->port_state); 6813 } 6814 mempool_free(mboxq, phba->mbox_mem_pool); 6815 return; 6816 } 6817 6818 /** 6819 * lpfc_unregister_fcf_prep - Unregister fcf record preparation 6820 * @phba: Pointer to hba context object. 6821 * 6822 * This function prepare the HBA for unregistering the currently registered 6823 * FCF from the HBA. It performs unregistering, in order, RPIs, VPIs, and 6824 * VFIs. 6825 */ 6826 int 6827 lpfc_unregister_fcf_prep(struct lpfc_hba *phba) 6828 { 6829 struct lpfc_vport **vports; 6830 struct lpfc_nodelist *ndlp; 6831 struct Scsi_Host *shost; 6832 int i = 0, rc; 6833 6834 /* Unregister RPIs */ 6835 if (lpfc_fcf_inuse(phba)) 6836 lpfc_unreg_hba_rpis(phba); 6837 6838 /* At this point, all discovery is aborted */ 6839 phba->pport->port_state = LPFC_VPORT_UNKNOWN; 6840 6841 /* Unregister VPIs */ 6842 vports = lpfc_create_vport_work_array(phba); 6843 if (vports && (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)) 6844 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) { 6845 /* Stop FLOGI/FDISC retries */ 6846 ndlp = lpfc_findnode_did(vports[i], Fabric_DID); 6847 if (ndlp) 6848 lpfc_cancel_retry_delay_tmo(vports[i], ndlp); 6849 lpfc_cleanup_pending_mbox(vports[i]); 6850 if (phba->sli_rev == LPFC_SLI_REV4) 6851 lpfc_sli4_unreg_all_rpis(vports[i]); 6852 lpfc_mbx_unreg_vpi(vports[i]); 6853 shost = lpfc_shost_from_vport(vports[i]); 6854 spin_lock_irq(shost->host_lock); 6855 vports[i]->fc_flag |= FC_VPORT_NEEDS_INIT_VPI; 6856 vports[i]->vpi_state &= ~LPFC_VPI_REGISTERED; 6857 spin_unlock_irq(shost->host_lock); 6858 } 6859 lpfc_destroy_vport_work_array(phba, vports); 6860 if (i == 0 && (!(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED))) { 6861 ndlp = lpfc_findnode_did(phba->pport, Fabric_DID); 6862 if (ndlp) 6863 lpfc_cancel_retry_delay_tmo(phba->pport, ndlp); 6864 lpfc_cleanup_pending_mbox(phba->pport); 6865 if (phba->sli_rev == LPFC_SLI_REV4) 6866 lpfc_sli4_unreg_all_rpis(phba->pport); 6867 lpfc_mbx_unreg_vpi(phba->pport); 6868 shost = lpfc_shost_from_vport(phba->pport); 6869 spin_lock_irq(shost->host_lock); 6870 phba->pport->fc_flag |= FC_VPORT_NEEDS_INIT_VPI; 6871 phba->pport->vpi_state &= ~LPFC_VPI_REGISTERED; 6872 spin_unlock_irq(shost->host_lock); 6873 } 6874 6875 /* Cleanup any outstanding ELS commands */ 6876 lpfc_els_flush_all_cmd(phba); 6877 6878 /* Unregister the physical port VFI */ 6879 rc = lpfc_issue_unreg_vfi(phba->pport); 6880 return rc; 6881 } 6882 6883 /** 6884 * lpfc_sli4_unregister_fcf - Unregister currently registered FCF record 6885 * @phba: Pointer to hba context object. 6886 * 6887 * This function issues synchronous unregister FCF mailbox command to HBA to 6888 * unregister the currently registered FCF record. The driver does not reset 6889 * the driver FCF usage state flags. 6890 * 6891 * Return 0 if successfully issued, none-zero otherwise. 6892 */ 6893 int 6894 lpfc_sli4_unregister_fcf(struct lpfc_hba *phba) 6895 { 6896 LPFC_MBOXQ_t *mbox; 6897 int rc; 6898 6899 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 6900 if (!mbox) { 6901 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 6902 "2551 UNREG_FCFI mbox allocation failed" 6903 "HBA state x%x\n", phba->pport->port_state); 6904 return -ENOMEM; 6905 } 6906 lpfc_unreg_fcfi(mbox, phba->fcf.fcfi); 6907 mbox->vport = phba->pport; 6908 mbox->mbox_cmpl = lpfc_unregister_fcfi_cmpl; 6909 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT); 6910 6911 if (rc == MBX_NOT_FINISHED) { 6912 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 6913 "2552 Unregister FCFI command failed rc x%x " 6914 "HBA state x%x\n", 6915 rc, phba->pport->port_state); 6916 return -EINVAL; 6917 } 6918 return 0; 6919 } 6920 6921 /** 6922 * lpfc_unregister_fcf_rescan - Unregister currently registered fcf and rescan 6923 * @phba: Pointer to hba context object. 6924 * 6925 * This function unregisters the currently reigstered FCF. This function 6926 * also tries to find another FCF for discovery by rescan the HBA FCF table. 6927 */ 6928 void 6929 lpfc_unregister_fcf_rescan(struct lpfc_hba *phba) 6930 { 6931 int rc; 6932 6933 /* Preparation for unregistering fcf */ 6934 rc = lpfc_unregister_fcf_prep(phba); 6935 if (rc) { 6936 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 6937 "2748 Failed to prepare for unregistering " 6938 "HBA's FCF record: rc=%d\n", rc); 6939 return; 6940 } 6941 6942 /* Now, unregister FCF record and reset HBA FCF state */ 6943 rc = lpfc_sli4_unregister_fcf(phba); 6944 if (rc) 6945 return; 6946 /* Reset HBA FCF states after successful unregister FCF */ 6947 phba->fcf.fcf_flag = 0; 6948 phba->fcf.current_rec.flag = 0; 6949 6950 /* 6951 * If driver is not unloading, check if there is any other 6952 * FCF record that can be used for discovery. 6953 */ 6954 if ((phba->pport->load_flag & FC_UNLOADING) || 6955 (phba->link_state < LPFC_LINK_UP)) 6956 return; 6957 6958 /* This is considered as the initial FCF discovery scan */ 6959 spin_lock_irq(&phba->hbalock); 6960 phba->fcf.fcf_flag |= FCF_INIT_DISC; 6961 spin_unlock_irq(&phba->hbalock); 6962 6963 /* Reset FCF roundrobin bmask for new discovery */ 6964 lpfc_sli4_clear_fcf_rr_bmask(phba); 6965 6966 rc = lpfc_sli4_fcf_scan_read_fcf_rec(phba, LPFC_FCOE_FCF_GET_FIRST); 6967 6968 if (rc) { 6969 spin_lock_irq(&phba->hbalock); 6970 phba->fcf.fcf_flag &= ~FCF_INIT_DISC; 6971 spin_unlock_irq(&phba->hbalock); 6972 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 6973 "2553 lpfc_unregister_unused_fcf failed " 6974 "to read FCF record HBA state x%x\n", 6975 phba->pport->port_state); 6976 } 6977 } 6978 6979 /** 6980 * lpfc_unregister_fcf - Unregister the currently registered fcf record 6981 * @phba: Pointer to hba context object. 6982 * 6983 * This function just unregisters the currently reigstered FCF. It does not 6984 * try to find another FCF for discovery. 6985 */ 6986 void 6987 lpfc_unregister_fcf(struct lpfc_hba *phba) 6988 { 6989 int rc; 6990 6991 /* Preparation for unregistering fcf */ 6992 rc = lpfc_unregister_fcf_prep(phba); 6993 if (rc) { 6994 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 6995 "2749 Failed to prepare for unregistering " 6996 "HBA's FCF record: rc=%d\n", rc); 6997 return; 6998 } 6999 7000 /* Now, unregister FCF record and reset HBA FCF state */ 7001 rc = lpfc_sli4_unregister_fcf(phba); 7002 if (rc) 7003 return; 7004 /* Set proper HBA FCF states after successful unregister FCF */ 7005 spin_lock_irq(&phba->hbalock); 7006 phba->fcf.fcf_flag &= ~FCF_REGISTERED; 7007 spin_unlock_irq(&phba->hbalock); 7008 } 7009 7010 /** 7011 * lpfc_unregister_unused_fcf - Unregister FCF if all devices are disconnected. 7012 * @phba: Pointer to hba context object. 7013 * 7014 * This function check if there are any connected remote port for the FCF and 7015 * if all the devices are disconnected, this function unregister FCFI. 7016 * This function also tries to use another FCF for discovery. 7017 */ 7018 void 7019 lpfc_unregister_unused_fcf(struct lpfc_hba *phba) 7020 { 7021 /* 7022 * If HBA is not running in FIP mode, if HBA does not support 7023 * FCoE, if FCF discovery is ongoing, or if FCF has not been 7024 * registered, do nothing. 7025 */ 7026 spin_lock_irq(&phba->hbalock); 7027 if (!(phba->hba_flag & HBA_FCOE_MODE) || 7028 !(phba->fcf.fcf_flag & FCF_REGISTERED) || 7029 !(phba->hba_flag & HBA_FIP_SUPPORT) || 7030 (phba->fcf.fcf_flag & FCF_DISCOVERY) || 7031 (phba->pport->port_state == LPFC_FLOGI)) { 7032 spin_unlock_irq(&phba->hbalock); 7033 return; 7034 } 7035 spin_unlock_irq(&phba->hbalock); 7036 7037 if (lpfc_fcf_inuse(phba)) 7038 return; 7039 7040 lpfc_unregister_fcf_rescan(phba); 7041 } 7042 7043 /** 7044 * lpfc_read_fcf_conn_tbl - Create driver FCF connection table. 7045 * @phba: Pointer to hba context object. 7046 * @buff: Buffer containing the FCF connection table as in the config 7047 * region. 7048 * This function create driver data structure for the FCF connection 7049 * record table read from config region 23. 7050 */ 7051 static void 7052 lpfc_read_fcf_conn_tbl(struct lpfc_hba *phba, 7053 uint8_t *buff) 7054 { 7055 struct lpfc_fcf_conn_entry *conn_entry, *next_conn_entry; 7056 struct lpfc_fcf_conn_hdr *conn_hdr; 7057 struct lpfc_fcf_conn_rec *conn_rec; 7058 uint32_t record_count; 7059 int i; 7060 7061 /* Free the current connect table */ 7062 list_for_each_entry_safe(conn_entry, next_conn_entry, 7063 &phba->fcf_conn_rec_list, list) { 7064 list_del_init(&conn_entry->list); 7065 kfree(conn_entry); 7066 } 7067 7068 conn_hdr = (struct lpfc_fcf_conn_hdr *) buff; 7069 record_count = conn_hdr->length * sizeof(uint32_t)/ 7070 sizeof(struct lpfc_fcf_conn_rec); 7071 7072 conn_rec = (struct lpfc_fcf_conn_rec *) 7073 (buff + sizeof(struct lpfc_fcf_conn_hdr)); 7074 7075 for (i = 0; i < record_count; i++) { 7076 if (!(conn_rec[i].flags & FCFCNCT_VALID)) 7077 continue; 7078 conn_entry = kzalloc(sizeof(struct lpfc_fcf_conn_entry), 7079 GFP_KERNEL); 7080 if (!conn_entry) { 7081 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 7082 "2566 Failed to allocate connection" 7083 " table entry\n"); 7084 return; 7085 } 7086 7087 memcpy(&conn_entry->conn_rec, &conn_rec[i], 7088 sizeof(struct lpfc_fcf_conn_rec)); 7089 list_add_tail(&conn_entry->list, 7090 &phba->fcf_conn_rec_list); 7091 } 7092 7093 if (!list_empty(&phba->fcf_conn_rec_list)) { 7094 i = 0; 7095 list_for_each_entry(conn_entry, &phba->fcf_conn_rec_list, 7096 list) { 7097 conn_rec = &conn_entry->conn_rec; 7098 lpfc_printf_log(phba, KERN_INFO, LOG_INIT, 7099 "3345 FCF connection list rec[%02d]: " 7100 "flags:x%04x, vtag:x%04x, " 7101 "fabric_name:x%02x:%02x:%02x:%02x:" 7102 "%02x:%02x:%02x:%02x, " 7103 "switch_name:x%02x:%02x:%02x:%02x:" 7104 "%02x:%02x:%02x:%02x\n", i++, 7105 conn_rec->flags, conn_rec->vlan_tag, 7106 conn_rec->fabric_name[0], 7107 conn_rec->fabric_name[1], 7108 conn_rec->fabric_name[2], 7109 conn_rec->fabric_name[3], 7110 conn_rec->fabric_name[4], 7111 conn_rec->fabric_name[5], 7112 conn_rec->fabric_name[6], 7113 conn_rec->fabric_name[7], 7114 conn_rec->switch_name[0], 7115 conn_rec->switch_name[1], 7116 conn_rec->switch_name[2], 7117 conn_rec->switch_name[3], 7118 conn_rec->switch_name[4], 7119 conn_rec->switch_name[5], 7120 conn_rec->switch_name[6], 7121 conn_rec->switch_name[7]); 7122 } 7123 } 7124 } 7125 7126 /** 7127 * lpfc_read_fcoe_param - Read FCoe parameters from conf region.. 7128 * @phba: Pointer to hba context object. 7129 * @buff: Buffer containing the FCoE parameter data structure. 7130 * 7131 * This function update driver data structure with config 7132 * parameters read from config region 23. 7133 */ 7134 static void 7135 lpfc_read_fcoe_param(struct lpfc_hba *phba, 7136 uint8_t *buff) 7137 { 7138 struct lpfc_fip_param_hdr *fcoe_param_hdr; 7139 struct lpfc_fcoe_params *fcoe_param; 7140 7141 fcoe_param_hdr = (struct lpfc_fip_param_hdr *) 7142 buff; 7143 fcoe_param = (struct lpfc_fcoe_params *) 7144 (buff + sizeof(struct lpfc_fip_param_hdr)); 7145 7146 if ((fcoe_param_hdr->parm_version != FIPP_VERSION) || 7147 (fcoe_param_hdr->length != FCOE_PARAM_LENGTH)) 7148 return; 7149 7150 if (fcoe_param_hdr->parm_flags & FIPP_VLAN_VALID) { 7151 phba->valid_vlan = 1; 7152 phba->vlan_id = le16_to_cpu(fcoe_param->vlan_tag) & 7153 0xFFF; 7154 } 7155 7156 phba->fc_map[0] = fcoe_param->fc_map[0]; 7157 phba->fc_map[1] = fcoe_param->fc_map[1]; 7158 phba->fc_map[2] = fcoe_param->fc_map[2]; 7159 return; 7160 } 7161 7162 /** 7163 * lpfc_get_rec_conf23 - Get a record type in config region data. 7164 * @buff: Buffer containing config region 23 data. 7165 * @size: Size of the data buffer. 7166 * @rec_type: Record type to be searched. 7167 * 7168 * This function searches config region data to find the beginning 7169 * of the record specified by record_type. If record found, this 7170 * function return pointer to the record else return NULL. 7171 */ 7172 static uint8_t * 7173 lpfc_get_rec_conf23(uint8_t *buff, uint32_t size, uint8_t rec_type) 7174 { 7175 uint32_t offset = 0, rec_length; 7176 7177 if ((buff[0] == LPFC_REGION23_LAST_REC) || 7178 (size < sizeof(uint32_t))) 7179 return NULL; 7180 7181 rec_length = buff[offset + 1]; 7182 7183 /* 7184 * One TLV record has one word header and number of data words 7185 * specified in the rec_length field of the record header. 7186 */ 7187 while ((offset + rec_length * sizeof(uint32_t) + sizeof(uint32_t)) 7188 <= size) { 7189 if (buff[offset] == rec_type) 7190 return &buff[offset]; 7191 7192 if (buff[offset] == LPFC_REGION23_LAST_REC) 7193 return NULL; 7194 7195 offset += rec_length * sizeof(uint32_t) + sizeof(uint32_t); 7196 rec_length = buff[offset + 1]; 7197 } 7198 return NULL; 7199 } 7200 7201 /** 7202 * lpfc_parse_fcoe_conf - Parse FCoE config data read from config region 23. 7203 * @phba: Pointer to lpfc_hba data structure. 7204 * @buff: Buffer containing config region 23 data. 7205 * @size: Size of the data buffer. 7206 * 7207 * This function parses the FCoE config parameters in config region 23 and 7208 * populate driver data structure with the parameters. 7209 */ 7210 void 7211 lpfc_parse_fcoe_conf(struct lpfc_hba *phba, 7212 uint8_t *buff, 7213 uint32_t size) 7214 { 7215 uint32_t offset = 0; 7216 uint8_t *rec_ptr; 7217 7218 /* 7219 * If data size is less than 2 words signature and version cannot be 7220 * verified. 7221 */ 7222 if (size < 2*sizeof(uint32_t)) 7223 return; 7224 7225 /* Check the region signature first */ 7226 if (memcmp(buff, LPFC_REGION23_SIGNATURE, 4)) { 7227 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 7228 "2567 Config region 23 has bad signature\n"); 7229 return; 7230 } 7231 7232 offset += 4; 7233 7234 /* Check the data structure version */ 7235 if (buff[offset] != LPFC_REGION23_VERSION) { 7236 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 7237 "2568 Config region 23 has bad version\n"); 7238 return; 7239 } 7240 offset += 4; 7241 7242 /* Read FCoE param record */ 7243 rec_ptr = lpfc_get_rec_conf23(&buff[offset], 7244 size - offset, FCOE_PARAM_TYPE); 7245 if (rec_ptr) 7246 lpfc_read_fcoe_param(phba, rec_ptr); 7247 7248 /* Read FCF connection table */ 7249 rec_ptr = lpfc_get_rec_conf23(&buff[offset], 7250 size - offset, FCOE_CONN_TBL_TYPE); 7251 if (rec_ptr) 7252 lpfc_read_fcf_conn_tbl(phba, rec_ptr); 7253 7254 } 7255 7256 /* 7257 * lpfc_error_lost_link - IO failure from link event or FW reset check. 7258 * 7259 * @vport: Pointer to lpfc_vport data structure. 7260 * @ulp_status: IO completion status. 7261 * @ulp_word4: Reason code for the ulp_status. 7262 * 7263 * This function evaluates the ulp_status and ulp_word4 values 7264 * for specific error values that indicate an internal link fault 7265 * or fw reset event for the completing IO. Callers require this 7266 * common data to decide next steps on the IO. 7267 * 7268 * Return: 7269 * false - No link or reset error occurred. 7270 * true - A link or reset error occurred. 7271 */ 7272 bool 7273 lpfc_error_lost_link(struct lpfc_vport *vport, u32 ulp_status, u32 ulp_word4) 7274 { 7275 /* Mask off the extra port data to get just the reason code. */ 7276 u32 rsn_code = IOERR_PARAM_MASK & ulp_word4; 7277 7278 if (ulp_status == IOSTAT_LOCAL_REJECT && 7279 (rsn_code == IOERR_SLI_ABORTED || 7280 rsn_code == IOERR_LINK_DOWN || 7281 rsn_code == IOERR_SLI_DOWN)) { 7282 lpfc_printf_vlog(vport, KERN_WARNING, LOG_SLI | LOG_ELS, 7283 "0408 Report link error true: <x%x:x%x>\n", 7284 ulp_status, ulp_word4); 7285 return true; 7286 } 7287 7288 return false; 7289 } 7290