1 /******************************************************************* 2 * This file is part of the Emulex Linux Device Driver for * 3 * Fibre Channel Host Bus Adapters. * 4 * Copyright (C) 2017-2024 Broadcom. All Rights Reserved. The term * 5 * “Broadcom” refers to Broadcom Inc. and/or its subsidiaries. * 6 * Copyright (C) 2004-2016 Emulex. All rights reserved. * 7 * EMULEX and SLI are trademarks of Emulex. * 8 * www.broadcom.com * 9 * Portions Copyright (C) 2004-2005 Christoph Hellwig * 10 * * 11 * This program is free software; you can redistribute it and/or * 12 * modify it under the terms of version 2 of the GNU General * 13 * Public License as published by the Free Software Foundation. * 14 * This program is distributed in the hope that it will be useful. * 15 * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND * 16 * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, * 17 * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE * 18 * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD * 19 * TO BE LEGALLY INVALID. See the GNU General Public License for * 20 * more details, a copy of which can be found in the file COPYING * 21 * included with this package. * 22 *******************************************************************/ 23 24 #include <linux/blkdev.h> 25 #include <linux/delay.h> 26 #include <linux/slab.h> 27 #include <linux/pci.h> 28 #include <linux/kthread.h> 29 #include <linux/interrupt.h> 30 #include <linux/lockdep.h> 31 #include <linux/utsname.h> 32 33 #include <scsi/scsi.h> 34 #include <scsi/scsi_device.h> 35 #include <scsi/scsi_host.h> 36 #include <scsi/scsi_transport_fc.h> 37 #include <scsi/fc/fc_fs.h> 38 39 #include "lpfc_hw4.h" 40 #include "lpfc_hw.h" 41 #include "lpfc_nl.h" 42 #include "lpfc_disc.h" 43 #include "lpfc_sli.h" 44 #include "lpfc_sli4.h" 45 #include "lpfc.h" 46 #include "lpfc_scsi.h" 47 #include "lpfc_nvme.h" 48 #include "lpfc_logmsg.h" 49 #include "lpfc_crtn.h" 50 #include "lpfc_vport.h" 51 #include "lpfc_debugfs.h" 52 53 /* AlpaArray for assignment of scsid for scan-down and bind_method */ 54 static uint8_t lpfcAlpaArray[] = { 55 0xEF, 0xE8, 0xE4, 0xE2, 0xE1, 0xE0, 0xDC, 0xDA, 0xD9, 0xD6, 56 0xD5, 0xD4, 0xD3, 0xD2, 0xD1, 0xCE, 0xCD, 0xCC, 0xCB, 0xCA, 57 0xC9, 0xC7, 0xC6, 0xC5, 0xC3, 0xBC, 0xBA, 0xB9, 0xB6, 0xB5, 58 0xB4, 0xB3, 0xB2, 0xB1, 0xAE, 0xAD, 0xAC, 0xAB, 0xAA, 0xA9, 59 0xA7, 0xA6, 0xA5, 0xA3, 0x9F, 0x9E, 0x9D, 0x9B, 0x98, 0x97, 60 0x90, 0x8F, 0x88, 0x84, 0x82, 0x81, 0x80, 0x7C, 0x7A, 0x79, 61 0x76, 0x75, 0x74, 0x73, 0x72, 0x71, 0x6E, 0x6D, 0x6C, 0x6B, 62 0x6A, 0x69, 0x67, 0x66, 0x65, 0x63, 0x5C, 0x5A, 0x59, 0x56, 63 0x55, 0x54, 0x53, 0x52, 0x51, 0x4E, 0x4D, 0x4C, 0x4B, 0x4A, 64 0x49, 0x47, 0x46, 0x45, 0x43, 0x3C, 0x3A, 0x39, 0x36, 0x35, 65 0x34, 0x33, 0x32, 0x31, 0x2E, 0x2D, 0x2C, 0x2B, 0x2A, 0x29, 66 0x27, 0x26, 0x25, 0x23, 0x1F, 0x1E, 0x1D, 0x1B, 0x18, 0x17, 67 0x10, 0x0F, 0x08, 0x04, 0x02, 0x01 68 }; 69 70 static void lpfc_disc_timeout_handler(struct lpfc_vport *); 71 static void lpfc_disc_flush_list(struct lpfc_vport *vport); 72 static void lpfc_unregister_fcfi_cmpl(struct lpfc_hba *, LPFC_MBOXQ_t *); 73 static int lpfc_fcf_inuse(struct lpfc_hba *); 74 static void lpfc_mbx_cmpl_read_sparam(struct lpfc_hba *, LPFC_MBOXQ_t *); 75 static void lpfc_check_inactive_vmid(struct lpfc_hba *phba); 76 static void lpfc_check_vmid_qfpa_issue(struct lpfc_hba *phba); 77 78 static int 79 lpfc_valid_xpt_node(struct lpfc_nodelist *ndlp) 80 { 81 if (ndlp->nlp_fc4_type || 82 ndlp->nlp_type & NLP_FABRIC) 83 return 1; 84 return 0; 85 } 86 /* The source of a terminate rport I/O is either a dev_loss_tmo 87 * event or a call to fc_remove_host. While the rport should be 88 * valid during these downcalls, the transport can call twice 89 * in a single event. This routine provides somoe protection 90 * as the NDLP isn't really free, just released to the pool. 91 */ 92 static int 93 lpfc_rport_invalid(struct fc_rport *rport) 94 { 95 struct lpfc_rport_data *rdata; 96 struct lpfc_nodelist *ndlp; 97 98 if (!rport) { 99 pr_err("**** %s: NULL rport, exit.\n", __func__); 100 return -EINVAL; 101 } 102 103 rdata = rport->dd_data; 104 if (!rdata) { 105 pr_err("**** %s: NULL dd_data on rport x%px SID x%x\n", 106 __func__, rport, rport->scsi_target_id); 107 return -EINVAL; 108 } 109 110 ndlp = rdata->pnode; 111 if (!rdata->pnode) { 112 pr_info("**** %s: NULL ndlp on rport x%px SID x%x\n", 113 __func__, rport, rport->scsi_target_id); 114 return -EINVAL; 115 } 116 117 if (!ndlp->vport) { 118 pr_err("**** %s: Null vport on ndlp x%px, DID x%x rport x%px " 119 "SID x%x\n", __func__, ndlp, ndlp->nlp_DID, rport, 120 rport->scsi_target_id); 121 return -EINVAL; 122 } 123 return 0; 124 } 125 126 void 127 lpfc_terminate_rport_io(struct fc_rport *rport) 128 { 129 struct lpfc_rport_data *rdata; 130 struct lpfc_nodelist *ndlp; 131 struct lpfc_vport *vport; 132 133 if (lpfc_rport_invalid(rport)) 134 return; 135 136 rdata = rport->dd_data; 137 ndlp = rdata->pnode; 138 vport = ndlp->vport; 139 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT, 140 "rport terminate: sid:x%x did:x%x flg:x%x", 141 ndlp->nlp_sid, ndlp->nlp_DID, ndlp->nlp_flag); 142 143 if (ndlp->nlp_sid != NLP_NO_SID) 144 lpfc_sli_abort_iocb(vport, ndlp->nlp_sid, 0, LPFC_CTX_TGT); 145 } 146 147 /* 148 * This function will be called when dev_loss_tmo fire. 149 */ 150 void 151 lpfc_dev_loss_tmo_callbk(struct fc_rport *rport) 152 { 153 struct lpfc_nodelist *ndlp; 154 struct lpfc_vport *vport; 155 struct lpfc_hba *phba; 156 struct lpfc_work_evt *evtp; 157 unsigned long iflags; 158 159 ndlp = ((struct lpfc_rport_data *)rport->dd_data)->pnode; 160 if (!ndlp) 161 return; 162 163 vport = ndlp->vport; 164 phba = vport->phba; 165 166 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT, 167 "rport devlosscb: sid:x%x did:x%x flg:x%x", 168 ndlp->nlp_sid, ndlp->nlp_DID, ndlp->nlp_flag); 169 170 lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_NODE, 171 "3181 dev_loss_callbk x%06x, rport x%px flg x%x " 172 "load_flag x%lx refcnt %u state %d xpt x%x\n", 173 ndlp->nlp_DID, ndlp->rport, ndlp->nlp_flag, 174 vport->load_flag, kref_read(&ndlp->kref), 175 ndlp->nlp_state, ndlp->fc4_xpt_flags); 176 177 /* Don't schedule a worker thread event if the vport is going down. */ 178 if (test_bit(FC_UNLOADING, &vport->load_flag)) { 179 spin_lock_irqsave(&ndlp->lock, iflags); 180 ndlp->rport = NULL; 181 182 /* The scsi_transport is done with the rport so lpfc cannot 183 * call to unregister. Remove the scsi transport reference 184 * and clean up the SCSI transport node details. 185 */ 186 if (ndlp->fc4_xpt_flags & (NLP_XPT_REGD | SCSI_XPT_REGD)) { 187 ndlp->fc4_xpt_flags &= ~SCSI_XPT_REGD; 188 189 /* NVME transport-registered rports need the 190 * NLP_XPT_REGD flag to complete an unregister. 191 */ 192 if (!(ndlp->fc4_xpt_flags & NVME_XPT_REGD)) 193 ndlp->fc4_xpt_flags &= ~NLP_XPT_REGD; 194 spin_unlock_irqrestore(&ndlp->lock, iflags); 195 lpfc_nlp_put(ndlp); 196 spin_lock_irqsave(&ndlp->lock, iflags); 197 } 198 199 /* Only 1 thread can drop the initial node reference. If 200 * another thread has set NLP_DROPPED, this thread is done. 201 */ 202 if (!(ndlp->fc4_xpt_flags & NVME_XPT_REGD) && 203 !(ndlp->nlp_flag & NLP_DROPPED)) { 204 ndlp->nlp_flag |= NLP_DROPPED; 205 spin_unlock_irqrestore(&ndlp->lock, iflags); 206 lpfc_nlp_put(ndlp); 207 return; 208 } 209 210 spin_unlock_irqrestore(&ndlp->lock, iflags); 211 return; 212 } 213 214 if (ndlp->nlp_state == NLP_STE_MAPPED_NODE) 215 return; 216 217 if (rport->port_name != wwn_to_u64(ndlp->nlp_portname.u.wwn)) 218 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 219 "6789 rport name %llx != node port name %llx", 220 rport->port_name, 221 wwn_to_u64(ndlp->nlp_portname.u.wwn)); 222 223 evtp = &ndlp->dev_loss_evt; 224 225 if (!list_empty(&evtp->evt_listp)) { 226 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 227 "6790 rport name %llx dev_loss_evt pending\n", 228 rport->port_name); 229 return; 230 } 231 232 spin_lock_irqsave(&ndlp->lock, iflags); 233 ndlp->nlp_flag |= NLP_IN_DEV_LOSS; 234 235 /* If there is a PLOGI in progress, and we are in a 236 * NLP_NPR_2B_DISC state, don't turn off the flag. 237 */ 238 if (ndlp->nlp_state != NLP_STE_PLOGI_ISSUE) 239 ndlp->nlp_flag &= ~NLP_NPR_2B_DISC; 240 241 /* 242 * The backend does not expect any more calls associated with this 243 * rport. Remove the association between rport and ndlp. 244 */ 245 ndlp->fc4_xpt_flags &= ~SCSI_XPT_REGD; 246 ((struct lpfc_rport_data *)rport->dd_data)->pnode = NULL; 247 ndlp->rport = NULL; 248 spin_unlock_irqrestore(&ndlp->lock, iflags); 249 250 if (phba->worker_thread) { 251 /* We need to hold the node by incrementing the reference 252 * count until this queued work is done 253 */ 254 evtp->evt_arg1 = lpfc_nlp_get(ndlp); 255 256 spin_lock_irqsave(&phba->hbalock, iflags); 257 if (evtp->evt_arg1) { 258 evtp->evt = LPFC_EVT_DEV_LOSS; 259 list_add_tail(&evtp->evt_listp, &phba->work_list); 260 lpfc_worker_wake_up(phba); 261 } 262 spin_unlock_irqrestore(&phba->hbalock, iflags); 263 } else { 264 lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_NODE, 265 "3188 worker thread is stopped %s x%06x, " 266 " rport x%px flg x%x load_flag x%lx refcnt " 267 "%d\n", __func__, ndlp->nlp_DID, 268 ndlp->rport, ndlp->nlp_flag, 269 vport->load_flag, kref_read(&ndlp->kref)); 270 if (!(ndlp->fc4_xpt_flags & NVME_XPT_REGD)) { 271 spin_lock_irqsave(&ndlp->lock, iflags); 272 /* Node is in dev loss. No further transaction. */ 273 ndlp->nlp_flag &= ~NLP_IN_DEV_LOSS; 274 spin_unlock_irqrestore(&ndlp->lock, iflags); 275 lpfc_disc_state_machine(vport, ndlp, NULL, 276 NLP_EVT_DEVICE_RM); 277 } 278 279 } 280 281 return; 282 } 283 284 /** 285 * lpfc_check_inactive_vmid_one - VMID inactivity checker for a vport 286 * @vport: Pointer to vport context object. 287 * 288 * This function checks for idle VMID entries related to a particular vport. If 289 * found unused/idle, free them accordingly. 290 **/ 291 static void lpfc_check_inactive_vmid_one(struct lpfc_vport *vport) 292 { 293 u16 keep; 294 u32 difftime = 0, r, bucket; 295 u64 *lta; 296 int cpu; 297 struct lpfc_vmid *vmp; 298 299 write_lock(&vport->vmid_lock); 300 301 if (!vport->cur_vmid_cnt) 302 goto out; 303 304 /* iterate through the table */ 305 hash_for_each(vport->hash_table, bucket, vmp, hnode) { 306 keep = 0; 307 if (vmp->flag & LPFC_VMID_REGISTERED) { 308 /* check if the particular VMID is in use */ 309 /* for all available per cpu variable */ 310 for_each_possible_cpu(cpu) { 311 /* if last access time is less than timeout */ 312 lta = per_cpu_ptr(vmp->last_io_time, cpu); 313 if (!lta) 314 continue; 315 difftime = (jiffies) - (*lta); 316 if ((vport->vmid_inactivity_timeout * 317 JIFFIES_PER_HR) > difftime) { 318 keep = 1; 319 break; 320 } 321 } 322 323 /* if none of the cpus have been used by the vm, */ 324 /* remove the entry if already registered */ 325 if (!keep) { 326 /* mark the entry for deregistration */ 327 vmp->flag = LPFC_VMID_DE_REGISTER; 328 write_unlock(&vport->vmid_lock); 329 if (vport->vmid_priority_tagging) 330 r = lpfc_vmid_uvem(vport, vmp, false); 331 else 332 r = lpfc_vmid_cmd(vport, 333 SLI_CTAS_DAPP_IDENT, 334 vmp); 335 336 /* decrement number of active vms and mark */ 337 /* entry in slot as free */ 338 write_lock(&vport->vmid_lock); 339 if (!r) { 340 struct lpfc_vmid *ht = vmp; 341 342 vport->cur_vmid_cnt--; 343 ht->flag = LPFC_VMID_SLOT_FREE; 344 free_percpu(ht->last_io_time); 345 ht->last_io_time = NULL; 346 hash_del(&ht->hnode); 347 } 348 } 349 } 350 } 351 out: 352 write_unlock(&vport->vmid_lock); 353 } 354 355 /** 356 * lpfc_check_inactive_vmid - VMID inactivity checker 357 * @phba: Pointer to hba context object. 358 * 359 * This function is called from the worker thread to determine if an entry in 360 * the VMID table can be released since there was no I/O activity seen from that 361 * particular VM for the specified time. When this happens, the entry in the 362 * table is released and also the resources on the switch cleared. 363 **/ 364 365 static void lpfc_check_inactive_vmid(struct lpfc_hba *phba) 366 { 367 struct lpfc_vport *vport; 368 struct lpfc_vport **vports; 369 int i; 370 371 vports = lpfc_create_vport_work_array(phba); 372 if (!vports) 373 return; 374 375 for (i = 0; i <= phba->max_vports; i++) { 376 if ((!vports[i]) && (i == 0)) 377 vport = phba->pport; 378 else 379 vport = vports[i]; 380 if (!vport) 381 break; 382 383 lpfc_check_inactive_vmid_one(vport); 384 } 385 lpfc_destroy_vport_work_array(phba, vports); 386 } 387 388 /** 389 * lpfc_check_nlp_post_devloss - Check to restore ndlp refcnt after devloss 390 * @vport: Pointer to vport object. 391 * @ndlp: Pointer to remote node object. 392 * 393 * If NLP_IN_RECOV_POST_DEV_LOSS flag was set due to outstanding recovery of 394 * node during dev_loss_tmo processing, then this function restores the nlp_put 395 * kref decrement from lpfc_dev_loss_tmo_handler. 396 **/ 397 void 398 lpfc_check_nlp_post_devloss(struct lpfc_vport *vport, 399 struct lpfc_nodelist *ndlp) 400 { 401 unsigned long iflags; 402 403 spin_lock_irqsave(&ndlp->lock, iflags); 404 if (ndlp->save_flags & NLP_IN_RECOV_POST_DEV_LOSS) { 405 ndlp->save_flags &= ~NLP_IN_RECOV_POST_DEV_LOSS; 406 spin_unlock_irqrestore(&ndlp->lock, iflags); 407 lpfc_nlp_get(ndlp); 408 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY | LOG_NODE, 409 "8438 Devloss timeout reversed on DID x%x " 410 "refcnt %d ndlp %p flag x%x " 411 "port_state = x%x\n", 412 ndlp->nlp_DID, kref_read(&ndlp->kref), ndlp, 413 ndlp->nlp_flag, vport->port_state); 414 return; 415 } 416 spin_unlock_irqrestore(&ndlp->lock, iflags); 417 } 418 419 /** 420 * lpfc_dev_loss_tmo_handler - Remote node devloss timeout handler 421 * @ndlp: Pointer to remote node object. 422 * 423 * This function is called from the worker thread when devloss timeout timer 424 * expires. For SLI4 host, this routine shall return 1 when at lease one 425 * remote node, including this @ndlp, is still in use of FCF; otherwise, this 426 * routine shall return 0 when there is no remote node is still in use of FCF 427 * when devloss timeout happened to this @ndlp. 428 **/ 429 static int 430 lpfc_dev_loss_tmo_handler(struct lpfc_nodelist *ndlp) 431 { 432 struct lpfc_vport *vport; 433 struct lpfc_hba *phba; 434 uint8_t *name; 435 int warn_on = 0; 436 int fcf_inuse = 0; 437 bool recovering = false; 438 struct fc_vport *fc_vport = NULL; 439 unsigned long iflags; 440 441 vport = ndlp->vport; 442 name = (uint8_t *)&ndlp->nlp_portname; 443 phba = vport->phba; 444 445 if (phba->sli_rev == LPFC_SLI_REV4) 446 fcf_inuse = lpfc_fcf_inuse(phba); 447 448 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT, 449 "rport devlosstmo:did:x%x type:x%x id:x%x", 450 ndlp->nlp_DID, ndlp->nlp_type, ndlp->nlp_sid); 451 452 lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_NODE, 453 "3182 %s x%06x, nflag x%x xflags x%x refcnt %d\n", 454 __func__, ndlp->nlp_DID, ndlp->nlp_flag, 455 ndlp->fc4_xpt_flags, kref_read(&ndlp->kref)); 456 457 /* If the driver is recovering the rport, ignore devloss. */ 458 if (ndlp->nlp_state == NLP_STE_MAPPED_NODE) { 459 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, 460 "0284 Devloss timeout Ignored on " 461 "WWPN %x:%x:%x:%x:%x:%x:%x:%x " 462 "NPort x%x\n", 463 *name, *(name+1), *(name+2), *(name+3), 464 *(name+4), *(name+5), *(name+6), *(name+7), 465 ndlp->nlp_DID); 466 467 spin_lock_irqsave(&ndlp->lock, iflags); 468 ndlp->nlp_flag &= ~NLP_IN_DEV_LOSS; 469 spin_unlock_irqrestore(&ndlp->lock, iflags); 470 return fcf_inuse; 471 } 472 473 /* Fabric nodes are done. */ 474 if (ndlp->nlp_type & NLP_FABRIC) { 475 spin_lock_irqsave(&ndlp->lock, iflags); 476 477 /* The driver has to account for a race between any fabric 478 * node that's in recovery when dev_loss_tmo expires. When this 479 * happens, the driver has to allow node recovery. 480 */ 481 switch (ndlp->nlp_DID) { 482 case Fabric_DID: 483 fc_vport = vport->fc_vport; 484 if (fc_vport) { 485 /* NPIV path. */ 486 if (fc_vport->vport_state == 487 FC_VPORT_INITIALIZING) 488 recovering = true; 489 } else { 490 /* Physical port path. */ 491 if (phba->hba_flag & HBA_FLOGI_OUTSTANDING) 492 recovering = true; 493 } 494 break; 495 case Fabric_Cntl_DID: 496 if (ndlp->nlp_flag & NLP_REG_LOGIN_SEND) 497 recovering = true; 498 break; 499 case FDMI_DID: 500 fallthrough; 501 case NameServer_DID: 502 if (ndlp->nlp_state >= NLP_STE_PLOGI_ISSUE && 503 ndlp->nlp_state <= NLP_STE_REG_LOGIN_ISSUE) 504 recovering = true; 505 break; 506 default: 507 /* Ensure the nlp_DID at least has the correct prefix. 508 * The fabric domain controller's last three nibbles 509 * vary so we handle it in the default case. 510 */ 511 if (ndlp->nlp_DID & Fabric_DID_MASK) { 512 if (ndlp->nlp_state >= NLP_STE_PLOGI_ISSUE && 513 ndlp->nlp_state <= NLP_STE_REG_LOGIN_ISSUE) 514 recovering = true; 515 } 516 break; 517 } 518 spin_unlock_irqrestore(&ndlp->lock, iflags); 519 520 /* Mark an NLP_IN_RECOV_POST_DEV_LOSS flag to know if reversing 521 * the following lpfc_nlp_put is necessary after fabric node is 522 * recovered. 523 */ 524 if (recovering) { 525 lpfc_printf_vlog(vport, KERN_INFO, 526 LOG_DISCOVERY | LOG_NODE, 527 "8436 Devloss timeout marked 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 spin_lock_irqsave(&ndlp->lock, iflags); 534 ndlp->save_flags |= NLP_IN_RECOV_POST_DEV_LOSS; 535 spin_unlock_irqrestore(&ndlp->lock, iflags); 536 } else if (ndlp->nlp_state == NLP_STE_UNMAPPED_NODE) { 537 /* Fabric node fully recovered before this dev_loss_tmo 538 * queue work is processed. Thus, ignore the 539 * dev_loss_tmo event. 540 */ 541 lpfc_printf_vlog(vport, KERN_INFO, 542 LOG_DISCOVERY | LOG_NODE, 543 "8437 Devloss timeout ignored on " 544 "DID x%x refcnt %d ndlp %p " 545 "flag x%x port_state = x%x\n", 546 ndlp->nlp_DID, kref_read(&ndlp->kref), 547 ndlp, ndlp->nlp_flag, 548 vport->port_state); 549 return fcf_inuse; 550 } 551 552 spin_lock_irqsave(&ndlp->lock, iflags); 553 ndlp->nlp_flag &= ~NLP_IN_DEV_LOSS; 554 spin_unlock_irqrestore(&ndlp->lock, iflags); 555 lpfc_nlp_put(ndlp); 556 return fcf_inuse; 557 } 558 559 if (ndlp->nlp_sid != NLP_NO_SID) { 560 warn_on = 1; 561 lpfc_sli_abort_iocb(vport, ndlp->nlp_sid, 0, LPFC_CTX_TGT); 562 } 563 564 if (warn_on) { 565 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 566 "0203 Devloss timeout on " 567 "WWPN %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x " 568 "NPort x%06x Data: x%x x%x x%x refcnt %d\n", 569 *name, *(name+1), *(name+2), *(name+3), 570 *(name+4), *(name+5), *(name+6), *(name+7), 571 ndlp->nlp_DID, ndlp->nlp_flag, 572 ndlp->nlp_state, ndlp->nlp_rpi, 573 kref_read(&ndlp->kref)); 574 } else { 575 lpfc_printf_vlog(vport, KERN_INFO, LOG_TRACE_EVENT, 576 "0204 Devloss timeout on " 577 "WWPN %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x " 578 "NPort x%06x Data: x%x x%x x%x\n", 579 *name, *(name+1), *(name+2), *(name+3), 580 *(name+4), *(name+5), *(name+6), *(name+7), 581 ndlp->nlp_DID, ndlp->nlp_flag, 582 ndlp->nlp_state, ndlp->nlp_rpi); 583 } 584 spin_lock_irqsave(&ndlp->lock, iflags); 585 ndlp->nlp_flag &= ~NLP_IN_DEV_LOSS; 586 spin_unlock_irqrestore(&ndlp->lock, iflags); 587 588 /* If we are devloss, but we are in the process of rediscovering the 589 * ndlp, don't issue a NLP_EVT_DEVICE_RM event. 590 */ 591 if (ndlp->nlp_state >= NLP_STE_PLOGI_ISSUE && 592 ndlp->nlp_state <= NLP_STE_PRLI_ISSUE) { 593 return fcf_inuse; 594 } 595 596 if (!(ndlp->fc4_xpt_flags & NVME_XPT_REGD)) 597 lpfc_disc_state_machine(vport, ndlp, NULL, NLP_EVT_DEVICE_RM); 598 599 return fcf_inuse; 600 } 601 602 static void lpfc_check_vmid_qfpa_issue(struct lpfc_hba *phba) 603 { 604 struct lpfc_vport *vport; 605 struct lpfc_vport **vports; 606 int i; 607 608 vports = lpfc_create_vport_work_array(phba); 609 if (!vports) 610 return; 611 612 for (i = 0; i <= phba->max_vports; i++) { 613 if ((!vports[i]) && (i == 0)) 614 vport = phba->pport; 615 else 616 vport = vports[i]; 617 if (!vport) 618 break; 619 620 if (vport->vmid_flag & LPFC_VMID_ISSUE_QFPA) { 621 if (!lpfc_issue_els_qfpa(vport)) 622 vport->vmid_flag &= ~LPFC_VMID_ISSUE_QFPA; 623 } 624 } 625 lpfc_destroy_vport_work_array(phba, vports); 626 } 627 628 /** 629 * lpfc_sli4_post_dev_loss_tmo_handler - SLI4 post devloss timeout handler 630 * @phba: Pointer to hba context object. 631 * @fcf_inuse: SLI4 FCF in-use state reported from devloss timeout handler. 632 * @nlp_did: remote node identifer with devloss timeout. 633 * 634 * This function is called from the worker thread after invoking devloss 635 * timeout handler and releasing the reference count for the ndlp with 636 * which the devloss timeout was handled for SLI4 host. For the devloss 637 * timeout of the last remote node which had been in use of FCF, when this 638 * routine is invoked, it shall be guaranteed that none of the remote are 639 * in-use of FCF. When devloss timeout to the last remote using the FCF, 640 * if the FIP engine is neither in FCF table scan process nor roundrobin 641 * failover process, the in-use FCF shall be unregistered. If the FIP 642 * engine is in FCF discovery process, the devloss timeout state shall 643 * be set for either the FCF table scan process or roundrobin failover 644 * process to unregister the in-use FCF. 645 **/ 646 static void 647 lpfc_sli4_post_dev_loss_tmo_handler(struct lpfc_hba *phba, int fcf_inuse, 648 uint32_t nlp_did) 649 { 650 /* If devloss timeout happened to a remote node when FCF had no 651 * longer been in-use, do nothing. 652 */ 653 if (!fcf_inuse) 654 return; 655 656 if ((phba->hba_flag & HBA_FIP_SUPPORT) && !lpfc_fcf_inuse(phba)) { 657 spin_lock_irq(&phba->hbalock); 658 if (phba->fcf.fcf_flag & FCF_DISCOVERY) { 659 if (phba->hba_flag & HBA_DEVLOSS_TMO) { 660 spin_unlock_irq(&phba->hbalock); 661 return; 662 } 663 phba->hba_flag |= HBA_DEVLOSS_TMO; 664 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 665 "2847 Last remote node (x%x) using " 666 "FCF devloss tmo\n", nlp_did); 667 } 668 if (phba->fcf.fcf_flag & FCF_REDISC_PROG) { 669 spin_unlock_irq(&phba->hbalock); 670 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 671 "2868 Devloss tmo to FCF rediscovery " 672 "in progress\n"); 673 return; 674 } 675 if (!(phba->hba_flag & (FCF_TS_INPROG | FCF_RR_INPROG))) { 676 spin_unlock_irq(&phba->hbalock); 677 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 678 "2869 Devloss tmo to idle FIP engine, " 679 "unreg in-use FCF and rescan.\n"); 680 /* Unregister in-use FCF and rescan */ 681 lpfc_unregister_fcf_rescan(phba); 682 return; 683 } 684 spin_unlock_irq(&phba->hbalock); 685 if (phba->hba_flag & FCF_TS_INPROG) 686 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 687 "2870 FCF table scan in progress\n"); 688 if (phba->hba_flag & FCF_RR_INPROG) 689 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 690 "2871 FLOGI roundrobin FCF failover " 691 "in progress\n"); 692 } 693 lpfc_unregister_unused_fcf(phba); 694 } 695 696 /** 697 * lpfc_alloc_fast_evt - Allocates data structure for posting event 698 * @phba: Pointer to hba context object. 699 * 700 * This function is called from the functions which need to post 701 * events from interrupt context. This function allocates data 702 * structure required for posting event. It also keeps track of 703 * number of events pending and prevent event storm when there are 704 * too many events. 705 **/ 706 struct lpfc_fast_path_event * 707 lpfc_alloc_fast_evt(struct lpfc_hba *phba) { 708 struct lpfc_fast_path_event *ret; 709 710 /* If there are lot of fast event do not exhaust memory due to this */ 711 if (atomic_read(&phba->fast_event_count) > LPFC_MAX_EVT_COUNT) 712 return NULL; 713 714 ret = kzalloc(sizeof(struct lpfc_fast_path_event), 715 GFP_ATOMIC); 716 if (ret) { 717 atomic_inc(&phba->fast_event_count); 718 INIT_LIST_HEAD(&ret->work_evt.evt_listp); 719 ret->work_evt.evt = LPFC_EVT_FASTPATH_MGMT_EVT; 720 } 721 return ret; 722 } 723 724 /** 725 * lpfc_free_fast_evt - Frees event data structure 726 * @phba: Pointer to hba context object. 727 * @evt: Event object which need to be freed. 728 * 729 * This function frees the data structure required for posting 730 * events. 731 **/ 732 void 733 lpfc_free_fast_evt(struct lpfc_hba *phba, 734 struct lpfc_fast_path_event *evt) { 735 736 atomic_dec(&phba->fast_event_count); 737 kfree(evt); 738 } 739 740 /** 741 * lpfc_send_fastpath_evt - Posts events generated from fast path 742 * @phba: Pointer to hba context object. 743 * @evtp: Event data structure. 744 * 745 * This function is called from worker thread, when the interrupt 746 * context need to post an event. This function posts the event 747 * to fc transport netlink interface. 748 **/ 749 static void 750 lpfc_send_fastpath_evt(struct lpfc_hba *phba, 751 struct lpfc_work_evt *evtp) 752 { 753 unsigned long evt_category, evt_sub_category; 754 struct lpfc_fast_path_event *fast_evt_data; 755 char *evt_data; 756 uint32_t evt_data_size; 757 struct Scsi_Host *shost; 758 759 fast_evt_data = container_of(evtp, struct lpfc_fast_path_event, 760 work_evt); 761 762 evt_category = (unsigned long) fast_evt_data->un.fabric_evt.event_type; 763 evt_sub_category = (unsigned long) fast_evt_data->un. 764 fabric_evt.subcategory; 765 shost = lpfc_shost_from_vport(fast_evt_data->vport); 766 if (evt_category == FC_REG_FABRIC_EVENT) { 767 if (evt_sub_category == LPFC_EVENT_FCPRDCHKERR) { 768 evt_data = (char *) &fast_evt_data->un.read_check_error; 769 evt_data_size = sizeof(fast_evt_data->un. 770 read_check_error); 771 } else if ((evt_sub_category == LPFC_EVENT_FABRIC_BUSY) || 772 (evt_sub_category == LPFC_EVENT_PORT_BUSY)) { 773 evt_data = (char *) &fast_evt_data->un.fabric_evt; 774 evt_data_size = sizeof(fast_evt_data->un.fabric_evt); 775 } else { 776 lpfc_free_fast_evt(phba, fast_evt_data); 777 return; 778 } 779 } else if (evt_category == FC_REG_SCSI_EVENT) { 780 switch (evt_sub_category) { 781 case LPFC_EVENT_QFULL: 782 case LPFC_EVENT_DEVBSY: 783 evt_data = (char *) &fast_evt_data->un.scsi_evt; 784 evt_data_size = sizeof(fast_evt_data->un.scsi_evt); 785 break; 786 case LPFC_EVENT_CHECK_COND: 787 evt_data = (char *) &fast_evt_data->un.check_cond_evt; 788 evt_data_size = sizeof(fast_evt_data->un. 789 check_cond_evt); 790 break; 791 case LPFC_EVENT_VARQUEDEPTH: 792 evt_data = (char *) &fast_evt_data->un.queue_depth_evt; 793 evt_data_size = sizeof(fast_evt_data->un. 794 queue_depth_evt); 795 break; 796 default: 797 lpfc_free_fast_evt(phba, fast_evt_data); 798 return; 799 } 800 } else { 801 lpfc_free_fast_evt(phba, fast_evt_data); 802 return; 803 } 804 805 if (phba->cfg_enable_fc4_type != LPFC_ENABLE_NVME) 806 fc_host_post_vendor_event(shost, 807 fc_get_event_number(), 808 evt_data_size, 809 evt_data, 810 LPFC_NL_VENDOR_ID); 811 812 lpfc_free_fast_evt(phba, fast_evt_data); 813 return; 814 } 815 816 static void 817 lpfc_work_list_done(struct lpfc_hba *phba) 818 { 819 struct lpfc_work_evt *evtp = NULL; 820 struct lpfc_nodelist *ndlp; 821 int free_evt; 822 int fcf_inuse; 823 uint32_t nlp_did; 824 bool hba_pci_err; 825 826 spin_lock_irq(&phba->hbalock); 827 while (!list_empty(&phba->work_list)) { 828 list_remove_head((&phba->work_list), evtp, typeof(*evtp), 829 evt_listp); 830 spin_unlock_irq(&phba->hbalock); 831 hba_pci_err = test_bit(HBA_PCI_ERR, &phba->bit_flags); 832 free_evt = 1; 833 switch (evtp->evt) { 834 case LPFC_EVT_ELS_RETRY: 835 ndlp = (struct lpfc_nodelist *) (evtp->evt_arg1); 836 if (!hba_pci_err) { 837 lpfc_els_retry_delay_handler(ndlp); 838 free_evt = 0; /* evt is part of ndlp */ 839 } 840 /* decrement the node reference count held 841 * for this queued work 842 */ 843 lpfc_nlp_put(ndlp); 844 break; 845 case LPFC_EVT_DEV_LOSS: 846 ndlp = (struct lpfc_nodelist *)(evtp->evt_arg1); 847 fcf_inuse = lpfc_dev_loss_tmo_handler(ndlp); 848 free_evt = 0; 849 /* decrement the node reference count held for 850 * this queued work 851 */ 852 nlp_did = ndlp->nlp_DID; 853 lpfc_nlp_put(ndlp); 854 if (phba->sli_rev == LPFC_SLI_REV4) 855 lpfc_sli4_post_dev_loss_tmo_handler(phba, 856 fcf_inuse, 857 nlp_did); 858 break; 859 case LPFC_EVT_RECOVER_PORT: 860 ndlp = (struct lpfc_nodelist *)(evtp->evt_arg1); 861 if (!hba_pci_err) { 862 lpfc_sli_abts_recover_port(ndlp->vport, ndlp); 863 free_evt = 0; 864 } 865 /* decrement the node reference count held for 866 * this queued work 867 */ 868 lpfc_nlp_put(ndlp); 869 break; 870 case LPFC_EVT_ONLINE: 871 if (phba->link_state < LPFC_LINK_DOWN) 872 *(int *) (evtp->evt_arg1) = lpfc_online(phba); 873 else 874 *(int *) (evtp->evt_arg1) = 0; 875 complete((struct completion *)(evtp->evt_arg2)); 876 break; 877 case LPFC_EVT_OFFLINE_PREP: 878 if (phba->link_state >= LPFC_LINK_DOWN) 879 lpfc_offline_prep(phba, LPFC_MBX_WAIT); 880 *(int *)(evtp->evt_arg1) = 0; 881 complete((struct completion *)(evtp->evt_arg2)); 882 break; 883 case LPFC_EVT_OFFLINE: 884 lpfc_offline(phba); 885 lpfc_sli_brdrestart(phba); 886 *(int *)(evtp->evt_arg1) = 887 lpfc_sli_brdready(phba, HS_FFRDY | HS_MBRDY); 888 lpfc_unblock_mgmt_io(phba); 889 complete((struct completion *)(evtp->evt_arg2)); 890 break; 891 case LPFC_EVT_WARM_START: 892 lpfc_offline(phba); 893 lpfc_reset_barrier(phba); 894 lpfc_sli_brdreset(phba); 895 lpfc_hba_down_post(phba); 896 *(int *)(evtp->evt_arg1) = 897 lpfc_sli_brdready(phba, HS_MBRDY); 898 lpfc_unblock_mgmt_io(phba); 899 complete((struct completion *)(evtp->evt_arg2)); 900 break; 901 case LPFC_EVT_KILL: 902 lpfc_offline(phba); 903 *(int *)(evtp->evt_arg1) 904 = (phba->pport->stopped) 905 ? 0 : lpfc_sli_brdkill(phba); 906 lpfc_unblock_mgmt_io(phba); 907 complete((struct completion *)(evtp->evt_arg2)); 908 break; 909 case LPFC_EVT_FASTPATH_MGMT_EVT: 910 lpfc_send_fastpath_evt(phba, evtp); 911 free_evt = 0; 912 break; 913 case LPFC_EVT_RESET_HBA: 914 if (!test_bit(FC_UNLOADING, &phba->pport->load_flag)) 915 lpfc_reset_hba(phba); 916 break; 917 } 918 if (free_evt) 919 kfree(evtp); 920 spin_lock_irq(&phba->hbalock); 921 } 922 spin_unlock_irq(&phba->hbalock); 923 924 } 925 926 static void 927 lpfc_work_done(struct lpfc_hba *phba) 928 { 929 struct lpfc_sli_ring *pring; 930 uint32_t ha_copy, status, control, work_port_events; 931 struct lpfc_vport **vports; 932 struct lpfc_vport *vport; 933 int i; 934 bool hba_pci_err; 935 936 hba_pci_err = test_bit(HBA_PCI_ERR, &phba->bit_flags); 937 spin_lock_irq(&phba->hbalock); 938 ha_copy = phba->work_ha; 939 phba->work_ha = 0; 940 spin_unlock_irq(&phba->hbalock); 941 if (hba_pci_err) 942 ha_copy = 0; 943 944 /* First, try to post the next mailbox command to SLI4 device */ 945 if (phba->pci_dev_grp == LPFC_PCI_DEV_OC && !hba_pci_err) 946 lpfc_sli4_post_async_mbox(phba); 947 948 if (ha_copy & HA_ERATT) { 949 /* Handle the error attention event */ 950 lpfc_handle_eratt(phba); 951 952 if (phba->fw_dump_cmpl) { 953 complete(phba->fw_dump_cmpl); 954 phba->fw_dump_cmpl = NULL; 955 } 956 } 957 958 if (ha_copy & HA_MBATT) 959 lpfc_sli_handle_mb_event(phba); 960 961 if (ha_copy & HA_LATT) 962 lpfc_handle_latt(phba); 963 964 /* Handle VMID Events */ 965 if (lpfc_is_vmid_enabled(phba) && !hba_pci_err) { 966 if (phba->pport->work_port_events & 967 WORKER_CHECK_VMID_ISSUE_QFPA) { 968 lpfc_check_vmid_qfpa_issue(phba); 969 phba->pport->work_port_events &= 970 ~WORKER_CHECK_VMID_ISSUE_QFPA; 971 } 972 if (phba->pport->work_port_events & 973 WORKER_CHECK_INACTIVE_VMID) { 974 lpfc_check_inactive_vmid(phba); 975 phba->pport->work_port_events &= 976 ~WORKER_CHECK_INACTIVE_VMID; 977 } 978 } 979 980 /* Process SLI4 events */ 981 if (phba->pci_dev_grp == LPFC_PCI_DEV_OC) { 982 if (phba->hba_flag & HBA_RRQ_ACTIVE) 983 lpfc_handle_rrq_active(phba); 984 if (phba->hba_flag & ELS_XRI_ABORT_EVENT) 985 lpfc_sli4_els_xri_abort_event_proc(phba); 986 if (phba->hba_flag & ASYNC_EVENT) 987 lpfc_sli4_async_event_proc(phba); 988 if (phba->hba_flag & HBA_POST_RECEIVE_BUFFER) { 989 spin_lock_irq(&phba->hbalock); 990 phba->hba_flag &= ~HBA_POST_RECEIVE_BUFFER; 991 spin_unlock_irq(&phba->hbalock); 992 lpfc_sli_hbqbuf_add_hbqs(phba, LPFC_ELS_HBQ); 993 } 994 if (phba->fcf.fcf_flag & FCF_REDISC_EVT) 995 lpfc_sli4_fcf_redisc_event_proc(phba); 996 } 997 998 vports = lpfc_create_vport_work_array(phba); 999 if (vports != NULL) 1000 for (i = 0; i <= phba->max_vports; i++) { 1001 /* 1002 * We could have no vports in array if unloading, so if 1003 * this happens then just use the pport 1004 */ 1005 if (vports[i] == NULL && i == 0) 1006 vport = phba->pport; 1007 else 1008 vport = vports[i]; 1009 if (vport == NULL) 1010 break; 1011 spin_lock_irq(&vport->work_port_lock); 1012 work_port_events = vport->work_port_events; 1013 vport->work_port_events &= ~work_port_events; 1014 spin_unlock_irq(&vport->work_port_lock); 1015 if (hba_pci_err) 1016 continue; 1017 if (work_port_events & WORKER_DISC_TMO) 1018 lpfc_disc_timeout_handler(vport); 1019 if (work_port_events & WORKER_ELS_TMO) 1020 lpfc_els_timeout_handler(vport); 1021 if (work_port_events & WORKER_HB_TMO) 1022 lpfc_hb_timeout_handler(phba); 1023 if (work_port_events & WORKER_MBOX_TMO) 1024 lpfc_mbox_timeout_handler(phba); 1025 if (work_port_events & WORKER_FABRIC_BLOCK_TMO) 1026 lpfc_unblock_fabric_iocbs(phba); 1027 if (work_port_events & WORKER_RAMP_DOWN_QUEUE) 1028 lpfc_ramp_down_queue_handler(phba); 1029 if (work_port_events & WORKER_DELAYED_DISC_TMO) 1030 lpfc_delayed_disc_timeout_handler(vport); 1031 } 1032 lpfc_destroy_vport_work_array(phba, vports); 1033 1034 pring = lpfc_phba_elsring(phba); 1035 status = (ha_copy & (HA_RXMASK << (4*LPFC_ELS_RING))); 1036 status >>= (4*LPFC_ELS_RING); 1037 if (pring && (status & HA_RXMASK || 1038 pring->flag & LPFC_DEFERRED_RING_EVENT || 1039 phba->hba_flag & HBA_SP_QUEUE_EVT)) { 1040 if (pring->flag & LPFC_STOP_IOCB_EVENT) { 1041 pring->flag |= LPFC_DEFERRED_RING_EVENT; 1042 /* Preserve legacy behavior. */ 1043 if (!(phba->hba_flag & HBA_SP_QUEUE_EVT)) 1044 set_bit(LPFC_DATA_READY, &phba->data_flags); 1045 } else { 1046 /* Driver could have abort request completed in queue 1047 * when link goes down. Allow for this transition. 1048 */ 1049 if (phba->link_state >= LPFC_LINK_DOWN || 1050 phba->link_flag & LS_MDS_LOOPBACK) { 1051 pring->flag &= ~LPFC_DEFERRED_RING_EVENT; 1052 lpfc_sli_handle_slow_ring_event(phba, pring, 1053 (status & 1054 HA_RXMASK)); 1055 } 1056 } 1057 if (phba->sli_rev == LPFC_SLI_REV4) 1058 lpfc_drain_txq(phba); 1059 /* 1060 * Turn on Ring interrupts 1061 */ 1062 if (phba->sli_rev <= LPFC_SLI_REV3) { 1063 spin_lock_irq(&phba->hbalock); 1064 control = readl(phba->HCregaddr); 1065 if (!(control & (HC_R0INT_ENA << LPFC_ELS_RING))) { 1066 lpfc_debugfs_slow_ring_trc(phba, 1067 "WRK Enable ring: cntl:x%x hacopy:x%x", 1068 control, ha_copy, 0); 1069 1070 control |= (HC_R0INT_ENA << LPFC_ELS_RING); 1071 writel(control, phba->HCregaddr); 1072 readl(phba->HCregaddr); /* flush */ 1073 } else { 1074 lpfc_debugfs_slow_ring_trc(phba, 1075 "WRK Ring ok: cntl:x%x hacopy:x%x", 1076 control, ha_copy, 0); 1077 } 1078 spin_unlock_irq(&phba->hbalock); 1079 } 1080 } 1081 lpfc_work_list_done(phba); 1082 } 1083 1084 int 1085 lpfc_do_work(void *p) 1086 { 1087 struct lpfc_hba *phba = p; 1088 int rc; 1089 1090 set_user_nice(current, MIN_NICE); 1091 current->flags |= PF_NOFREEZE; 1092 phba->data_flags = 0; 1093 1094 while (!kthread_should_stop()) { 1095 /* wait and check worker queue activities */ 1096 rc = wait_event_interruptible(phba->work_waitq, 1097 (test_and_clear_bit(LPFC_DATA_READY, 1098 &phba->data_flags) 1099 || kthread_should_stop())); 1100 /* Signal wakeup shall terminate the worker thread */ 1101 if (rc) { 1102 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 1103 "0433 Wakeup on signal: rc=x%x\n", rc); 1104 break; 1105 } 1106 1107 /* Attend pending lpfc data processing */ 1108 lpfc_work_done(phba); 1109 } 1110 phba->worker_thread = NULL; 1111 lpfc_printf_log(phba, KERN_INFO, LOG_ELS, 1112 "0432 Worker thread stopped.\n"); 1113 return 0; 1114 } 1115 1116 /* 1117 * This is only called to handle FC worker events. Since this a rare 1118 * occurrence, we allocate a struct lpfc_work_evt structure here instead of 1119 * embedding it in the IOCB. 1120 */ 1121 int 1122 lpfc_workq_post_event(struct lpfc_hba *phba, void *arg1, void *arg2, 1123 uint32_t evt) 1124 { 1125 struct lpfc_work_evt *evtp; 1126 unsigned long flags; 1127 1128 /* 1129 * All Mailbox completions and LPFC_ELS_RING rcv ring IOCB events will 1130 * be queued to worker thread for processing 1131 */ 1132 evtp = kmalloc(sizeof(struct lpfc_work_evt), GFP_ATOMIC); 1133 if (!evtp) 1134 return 0; 1135 1136 evtp->evt_arg1 = arg1; 1137 evtp->evt_arg2 = arg2; 1138 evtp->evt = evt; 1139 1140 spin_lock_irqsave(&phba->hbalock, flags); 1141 list_add_tail(&evtp->evt_listp, &phba->work_list); 1142 spin_unlock_irqrestore(&phba->hbalock, flags); 1143 1144 lpfc_worker_wake_up(phba); 1145 1146 return 1; 1147 } 1148 1149 void 1150 lpfc_cleanup_rpis(struct lpfc_vport *vport, int remove) 1151 { 1152 struct lpfc_hba *phba = vport->phba; 1153 struct lpfc_nodelist *ndlp, *next_ndlp; 1154 1155 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) { 1156 if ((phba->sli3_options & LPFC_SLI3_VPORT_TEARDOWN) || 1157 ((vport->port_type == LPFC_NPIV_PORT) && 1158 ((ndlp->nlp_DID == NameServer_DID) || 1159 (ndlp->nlp_DID == FDMI_DID) || 1160 (ndlp->nlp_DID == Fabric_Cntl_DID)))) 1161 lpfc_unreg_rpi(vport, ndlp); 1162 1163 /* Leave Fabric nodes alone on link down */ 1164 if ((phba->sli_rev < LPFC_SLI_REV4) && 1165 (!remove && ndlp->nlp_type & NLP_FABRIC)) 1166 continue; 1167 1168 /* Notify transport of connectivity loss to trigger cleanup. */ 1169 if (phba->nvmet_support && 1170 ndlp->nlp_state == NLP_STE_UNMAPPED_NODE) 1171 lpfc_nvmet_invalidate_host(phba, ndlp); 1172 1173 lpfc_disc_state_machine(vport, ndlp, NULL, 1174 remove 1175 ? NLP_EVT_DEVICE_RM 1176 : NLP_EVT_DEVICE_RECOVERY); 1177 } 1178 if (phba->sli3_options & LPFC_SLI3_VPORT_TEARDOWN) { 1179 if (phba->sli_rev == LPFC_SLI_REV4) 1180 lpfc_sli4_unreg_all_rpis(vport); 1181 lpfc_mbx_unreg_vpi(vport); 1182 set_bit(FC_VPORT_NEEDS_REG_VPI, &vport->fc_flag); 1183 } 1184 } 1185 1186 void 1187 lpfc_port_link_failure(struct lpfc_vport *vport) 1188 { 1189 lpfc_vport_set_state(vport, FC_VPORT_LINKDOWN); 1190 1191 /* Cleanup any outstanding received buffers */ 1192 lpfc_cleanup_rcv_buffers(vport); 1193 1194 /* Cleanup any outstanding RSCN activity */ 1195 lpfc_els_flush_rscn(vport); 1196 1197 /* Cleanup any outstanding ELS commands */ 1198 lpfc_els_flush_cmd(vport); 1199 1200 lpfc_cleanup_rpis(vport, 0); 1201 1202 /* Turn off discovery timer if its running */ 1203 lpfc_can_disctmo(vport); 1204 } 1205 1206 void 1207 lpfc_linkdown_port(struct lpfc_vport *vport) 1208 { 1209 struct lpfc_hba *phba = vport->phba; 1210 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 1211 1212 if (vport->cfg_enable_fc4_type != LPFC_ENABLE_NVME) 1213 fc_host_post_event(shost, fc_get_event_number(), 1214 FCH_EVT_LINKDOWN, 0); 1215 1216 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, 1217 "Link Down: state:x%x rtry:x%x flg:x%x", 1218 vport->port_state, vport->fc_ns_retry, vport->fc_flag); 1219 1220 lpfc_port_link_failure(vport); 1221 1222 /* Stop delayed Nport discovery */ 1223 clear_bit(FC_DISC_DELAYED, &vport->fc_flag); 1224 del_timer_sync(&vport->delayed_disc_tmo); 1225 1226 if (phba->sli_rev == LPFC_SLI_REV4 && 1227 vport->port_type == LPFC_PHYSICAL_PORT && 1228 phba->sli4_hba.fawwpn_flag & LPFC_FAWWPN_CONFIG) { 1229 /* Assume success on link up */ 1230 phba->sli4_hba.fawwpn_flag |= LPFC_FAWWPN_FABRIC; 1231 } 1232 } 1233 1234 int 1235 lpfc_linkdown(struct lpfc_hba *phba) 1236 { 1237 struct lpfc_vport *vport = phba->pport; 1238 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 1239 struct lpfc_vport **vports; 1240 LPFC_MBOXQ_t *mb; 1241 int i; 1242 int offline; 1243 1244 if (phba->link_state == LPFC_LINK_DOWN) 1245 return 0; 1246 1247 /* Block all SCSI stack I/Os */ 1248 lpfc_scsi_dev_block(phba); 1249 offline = pci_channel_offline(phba->pcidev); 1250 1251 phba->defer_flogi_acc_flag = false; 1252 1253 /* Clear external loopback plug detected flag */ 1254 phba->link_flag &= ~LS_EXTERNAL_LOOPBACK; 1255 1256 spin_lock_irq(&phba->hbalock); 1257 phba->fcf.fcf_flag &= ~(FCF_AVAILABLE | FCF_SCAN_DONE); 1258 spin_unlock_irq(&phba->hbalock); 1259 if (phba->link_state > LPFC_LINK_DOWN) { 1260 phba->link_state = LPFC_LINK_DOWN; 1261 if (phba->sli4_hba.conf_trunk) { 1262 phba->trunk_link.link0.state = 0; 1263 phba->trunk_link.link1.state = 0; 1264 phba->trunk_link.link2.state = 0; 1265 phba->trunk_link.link3.state = 0; 1266 phba->trunk_link.phy_lnk_speed = 1267 LPFC_LINK_SPEED_UNKNOWN; 1268 phba->sli4_hba.link_state.logical_speed = 1269 LPFC_LINK_SPEED_UNKNOWN; 1270 } 1271 clear_bit(FC_LBIT, &phba->pport->fc_flag); 1272 } 1273 vports = lpfc_create_vport_work_array(phba); 1274 if (vports != NULL) { 1275 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) { 1276 /* Issue a LINK DOWN event to all nodes */ 1277 lpfc_linkdown_port(vports[i]); 1278 1279 vports[i]->fc_myDID = 0; 1280 1281 if ((vport->cfg_enable_fc4_type == LPFC_ENABLE_BOTH) || 1282 (vport->cfg_enable_fc4_type == LPFC_ENABLE_NVME)) { 1283 if (phba->nvmet_support) 1284 lpfc_nvmet_update_targetport(phba); 1285 else 1286 lpfc_nvme_update_localport(vports[i]); 1287 } 1288 } 1289 } 1290 lpfc_destroy_vport_work_array(phba, vports); 1291 1292 /* Clean up any SLI3 firmware default rpi's */ 1293 if (phba->sli_rev > LPFC_SLI_REV3 || offline) 1294 goto skip_unreg_did; 1295 1296 mb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 1297 if (mb) { 1298 lpfc_unreg_did(phba, 0xffff, LPFC_UNREG_ALL_DFLT_RPIS, mb); 1299 mb->vport = vport; 1300 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl; 1301 if (lpfc_sli_issue_mbox(phba, mb, MBX_NOWAIT) 1302 == MBX_NOT_FINISHED) { 1303 mempool_free(mb, phba->mbox_mem_pool); 1304 } 1305 } 1306 1307 skip_unreg_did: 1308 /* Setup myDID for link up if we are in pt2pt mode */ 1309 if (test_bit(FC_PT2PT, &phba->pport->fc_flag)) { 1310 mb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 1311 if (mb) { 1312 lpfc_config_link(phba, mb); 1313 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl; 1314 mb->vport = vport; 1315 if (lpfc_sli_issue_mbox(phba, mb, MBX_NOWAIT) 1316 == MBX_NOT_FINISHED) { 1317 mempool_free(mb, phba->mbox_mem_pool); 1318 } 1319 } 1320 clear_bit(FC_PT2PT, &phba->pport->fc_flag); 1321 clear_bit(FC_PT2PT_PLOGI, &phba->pport->fc_flag); 1322 spin_lock_irq(shost->host_lock); 1323 phba->pport->rcv_flogi_cnt = 0; 1324 spin_unlock_irq(shost->host_lock); 1325 } 1326 return 0; 1327 } 1328 1329 static void 1330 lpfc_linkup_cleanup_nodes(struct lpfc_vport *vport) 1331 { 1332 struct lpfc_nodelist *ndlp; 1333 1334 list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) { 1335 ndlp->nlp_fc4_type &= ~(NLP_FC4_FCP | NLP_FC4_NVME); 1336 1337 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE) 1338 continue; 1339 if (ndlp->nlp_type & NLP_FABRIC) { 1340 /* On Linkup its safe to clean up the ndlp 1341 * from Fabric connections. 1342 */ 1343 if (ndlp->nlp_DID != Fabric_DID) 1344 lpfc_unreg_rpi(vport, ndlp); 1345 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE); 1346 } else if (!(ndlp->nlp_flag & NLP_NPR_ADISC)) { 1347 /* Fail outstanding IO now since device is 1348 * marked for PLOGI. 1349 */ 1350 lpfc_unreg_rpi(vport, ndlp); 1351 } 1352 } 1353 } 1354 1355 static void 1356 lpfc_linkup_port(struct lpfc_vport *vport) 1357 { 1358 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 1359 struct lpfc_hba *phba = vport->phba; 1360 1361 if (test_bit(FC_UNLOADING, &vport->load_flag)) 1362 return; 1363 1364 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, 1365 "Link Up: top:x%x speed:x%x flg:x%x", 1366 phba->fc_topology, phba->fc_linkspeed, phba->link_flag); 1367 1368 /* If NPIV is not enabled, only bring the physical port up */ 1369 if (!(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) && 1370 (vport != phba->pport)) 1371 return; 1372 1373 if (phba->defer_flogi_acc_flag) { 1374 clear_bit(FC_ABORT_DISCOVERY, &vport->fc_flag); 1375 clear_bit(FC_RSCN_MODE, &vport->fc_flag); 1376 clear_bit(FC_NLP_MORE, &vport->fc_flag); 1377 clear_bit(FC_RSCN_DISCOVERY, &vport->fc_flag); 1378 } else { 1379 clear_bit(FC_PT2PT, &vport->fc_flag); 1380 clear_bit(FC_PT2PT_PLOGI, &vport->fc_flag); 1381 clear_bit(FC_ABORT_DISCOVERY, &vport->fc_flag); 1382 clear_bit(FC_RSCN_MODE, &vport->fc_flag); 1383 clear_bit(FC_NLP_MORE, &vport->fc_flag); 1384 clear_bit(FC_RSCN_DISCOVERY, &vport->fc_flag); 1385 } 1386 set_bit(FC_NDISC_ACTIVE, &vport->fc_flag); 1387 1388 spin_lock_irq(shost->host_lock); 1389 vport->fc_ns_retry = 0; 1390 spin_unlock_irq(shost->host_lock); 1391 lpfc_setup_fdmi_mask(vport); 1392 1393 lpfc_linkup_cleanup_nodes(vport); 1394 } 1395 1396 static int 1397 lpfc_linkup(struct lpfc_hba *phba) 1398 { 1399 struct lpfc_vport **vports; 1400 int i; 1401 struct Scsi_Host *shost = lpfc_shost_from_vport(phba->pport); 1402 1403 phba->link_state = LPFC_LINK_UP; 1404 1405 /* Unblock fabric iocbs if they are blocked */ 1406 clear_bit(FABRIC_COMANDS_BLOCKED, &phba->bit_flags); 1407 del_timer_sync(&phba->fabric_block_timer); 1408 1409 vports = lpfc_create_vport_work_array(phba); 1410 if (vports != NULL) 1411 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) 1412 lpfc_linkup_port(vports[i]); 1413 lpfc_destroy_vport_work_array(phba, vports); 1414 1415 /* Clear the pport flogi counter in case the link down was 1416 * absorbed without an ACQE. No lock here - in worker thread 1417 * and discovery is synchronized. 1418 */ 1419 spin_lock_irq(shost->host_lock); 1420 phba->pport->rcv_flogi_cnt = 0; 1421 spin_unlock_irq(shost->host_lock); 1422 1423 /* reinitialize initial HBA flag */ 1424 phba->hba_flag &= ~(HBA_FLOGI_ISSUED | HBA_RHBA_CMPL); 1425 1426 return 0; 1427 } 1428 1429 /* 1430 * This routine handles processing a CLEAR_LA mailbox 1431 * command upon completion. It is setup in the LPFC_MBOXQ 1432 * as the completion routine when the command is 1433 * handed off to the SLI layer. SLI3 only. 1434 */ 1435 static void 1436 lpfc_mbx_cmpl_clear_la(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 1437 { 1438 struct lpfc_vport *vport = pmb->vport; 1439 struct lpfc_sli *psli = &phba->sli; 1440 MAILBOX_t *mb = &pmb->u.mb; 1441 uint32_t control; 1442 1443 /* Since we don't do discovery right now, turn these off here */ 1444 psli->sli3_ring[LPFC_EXTRA_RING].flag &= ~LPFC_STOP_IOCB_EVENT; 1445 psli->sli3_ring[LPFC_FCP_RING].flag &= ~LPFC_STOP_IOCB_EVENT; 1446 1447 /* Check for error */ 1448 if ((mb->mbxStatus) && (mb->mbxStatus != 0x1601)) { 1449 /* CLEAR_LA mbox error <mbxStatus> state <hba_state> */ 1450 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 1451 "0320 CLEAR_LA mbxStatus error x%x hba " 1452 "state x%x\n", 1453 mb->mbxStatus, vport->port_state); 1454 phba->link_state = LPFC_HBA_ERROR; 1455 goto out; 1456 } 1457 1458 if (vport->port_type == LPFC_PHYSICAL_PORT) 1459 phba->link_state = LPFC_HBA_READY; 1460 1461 spin_lock_irq(&phba->hbalock); 1462 psli->sli_flag |= LPFC_PROCESS_LA; 1463 control = readl(phba->HCregaddr); 1464 control |= HC_LAINT_ENA; 1465 writel(control, phba->HCregaddr); 1466 readl(phba->HCregaddr); /* flush */ 1467 spin_unlock_irq(&phba->hbalock); 1468 mempool_free(pmb, phba->mbox_mem_pool); 1469 return; 1470 1471 out: 1472 /* Device Discovery completes */ 1473 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, 1474 "0225 Device Discovery completes\n"); 1475 mempool_free(pmb, phba->mbox_mem_pool); 1476 1477 clear_bit(FC_ABORT_DISCOVERY, &vport->fc_flag); 1478 1479 lpfc_can_disctmo(vport); 1480 1481 /* turn on Link Attention interrupts */ 1482 1483 spin_lock_irq(&phba->hbalock); 1484 psli->sli_flag |= LPFC_PROCESS_LA; 1485 control = readl(phba->HCregaddr); 1486 control |= HC_LAINT_ENA; 1487 writel(control, phba->HCregaddr); 1488 readl(phba->HCregaddr); /* flush */ 1489 spin_unlock_irq(&phba->hbalock); 1490 1491 return; 1492 } 1493 1494 void 1495 lpfc_mbx_cmpl_local_config_link(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 1496 { 1497 struct lpfc_vport *vport = pmb->vport; 1498 LPFC_MBOXQ_t *sparam_mb; 1499 u16 status = pmb->u.mb.mbxStatus; 1500 int rc; 1501 1502 mempool_free(pmb, phba->mbox_mem_pool); 1503 1504 if (status) 1505 goto out; 1506 1507 /* don't perform discovery for SLI4 loopback diagnostic test */ 1508 if ((phba->sli_rev == LPFC_SLI_REV4) && 1509 !(phba->hba_flag & HBA_FCOE_MODE) && 1510 (phba->link_flag & LS_LOOPBACK_MODE)) 1511 return; 1512 1513 if (phba->fc_topology == LPFC_TOPOLOGY_LOOP && 1514 test_bit(FC_PUBLIC_LOOP, &vport->fc_flag) && 1515 !test_bit(FC_LBIT, &vport->fc_flag)) { 1516 /* Need to wait for FAN - use discovery timer 1517 * for timeout. port_state is identically 1518 * LPFC_LOCAL_CFG_LINK while waiting for FAN 1519 */ 1520 lpfc_set_disctmo(vport); 1521 return; 1522 } 1523 1524 /* Start discovery by sending a FLOGI. port_state is identically 1525 * LPFC_FLOGI while waiting for FLOGI cmpl. 1526 */ 1527 if (vport->port_state != LPFC_FLOGI) { 1528 /* Issue MBX_READ_SPARAM to update CSPs before FLOGI if 1529 * bb-credit recovery is in place. 1530 */ 1531 if (phba->bbcredit_support && phba->cfg_enable_bbcr && 1532 !(phba->link_flag & LS_LOOPBACK_MODE)) { 1533 sparam_mb = mempool_alloc(phba->mbox_mem_pool, 1534 GFP_KERNEL); 1535 if (!sparam_mb) 1536 goto sparam_out; 1537 1538 rc = lpfc_read_sparam(phba, sparam_mb, 0); 1539 if (rc) { 1540 mempool_free(sparam_mb, phba->mbox_mem_pool); 1541 goto sparam_out; 1542 } 1543 sparam_mb->vport = vport; 1544 sparam_mb->mbox_cmpl = lpfc_mbx_cmpl_read_sparam; 1545 rc = lpfc_sli_issue_mbox(phba, sparam_mb, MBX_NOWAIT); 1546 if (rc == MBX_NOT_FINISHED) { 1547 lpfc_mbox_rsrc_cleanup(phba, sparam_mb, 1548 MBOX_THD_UNLOCKED); 1549 goto sparam_out; 1550 } 1551 1552 phba->hba_flag |= HBA_DEFER_FLOGI; 1553 } else { 1554 lpfc_initial_flogi(vport); 1555 } 1556 } else { 1557 if (test_bit(FC_PT2PT, &vport->fc_flag)) 1558 lpfc_disc_start(vport); 1559 } 1560 return; 1561 1562 out: 1563 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 1564 "0306 CONFIG_LINK mbxStatus error x%x HBA state x%x\n", 1565 status, vport->port_state); 1566 1567 sparam_out: 1568 lpfc_linkdown(phba); 1569 1570 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 1571 "0200 CONFIG_LINK bad hba state x%x\n", 1572 vport->port_state); 1573 1574 lpfc_issue_clear_la(phba, vport); 1575 return; 1576 } 1577 1578 /** 1579 * lpfc_sli4_clear_fcf_rr_bmask 1580 * @phba: pointer to the struct lpfc_hba for this port. 1581 * This fucnction resets the round robin bit mask and clears the 1582 * fcf priority list. The list deletions are done while holding the 1583 * hbalock. The ON_LIST flag and the FLOGI_FAILED flags are cleared 1584 * from the lpfc_fcf_pri record. 1585 **/ 1586 void 1587 lpfc_sli4_clear_fcf_rr_bmask(struct lpfc_hba *phba) 1588 { 1589 struct lpfc_fcf_pri *fcf_pri; 1590 struct lpfc_fcf_pri *next_fcf_pri; 1591 memset(phba->fcf.fcf_rr_bmask, 0, sizeof(*phba->fcf.fcf_rr_bmask)); 1592 spin_lock_irq(&phba->hbalock); 1593 list_for_each_entry_safe(fcf_pri, next_fcf_pri, 1594 &phba->fcf.fcf_pri_list, list) { 1595 list_del_init(&fcf_pri->list); 1596 fcf_pri->fcf_rec.flag = 0; 1597 } 1598 spin_unlock_irq(&phba->hbalock); 1599 } 1600 static void 1601 lpfc_mbx_cmpl_reg_fcfi(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq) 1602 { 1603 struct lpfc_vport *vport = mboxq->vport; 1604 1605 if (mboxq->u.mb.mbxStatus) { 1606 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 1607 "2017 REG_FCFI mbxStatus error x%x " 1608 "HBA state x%x\n", mboxq->u.mb.mbxStatus, 1609 vport->port_state); 1610 goto fail_out; 1611 } 1612 1613 /* Start FCoE discovery by sending a FLOGI. */ 1614 phba->fcf.fcfi = bf_get(lpfc_reg_fcfi_fcfi, &mboxq->u.mqe.un.reg_fcfi); 1615 /* Set the FCFI registered flag */ 1616 spin_lock_irq(&phba->hbalock); 1617 phba->fcf.fcf_flag |= FCF_REGISTERED; 1618 spin_unlock_irq(&phba->hbalock); 1619 1620 /* If there is a pending FCoE event, restart FCF table scan. */ 1621 if ((!(phba->hba_flag & FCF_RR_INPROG)) && 1622 lpfc_check_pending_fcoe_event(phba, LPFC_UNREG_FCF)) 1623 goto fail_out; 1624 1625 /* Mark successful completion of FCF table scan */ 1626 spin_lock_irq(&phba->hbalock); 1627 phba->fcf.fcf_flag |= (FCF_SCAN_DONE | FCF_IN_USE); 1628 phba->hba_flag &= ~FCF_TS_INPROG; 1629 if (vport->port_state != LPFC_FLOGI) { 1630 phba->hba_flag |= FCF_RR_INPROG; 1631 spin_unlock_irq(&phba->hbalock); 1632 lpfc_issue_init_vfi(vport); 1633 goto out; 1634 } 1635 spin_unlock_irq(&phba->hbalock); 1636 goto out; 1637 1638 fail_out: 1639 spin_lock_irq(&phba->hbalock); 1640 phba->hba_flag &= ~FCF_RR_INPROG; 1641 spin_unlock_irq(&phba->hbalock); 1642 out: 1643 mempool_free(mboxq, phba->mbox_mem_pool); 1644 } 1645 1646 /** 1647 * lpfc_fab_name_match - Check if the fcf fabric name match. 1648 * @fab_name: pointer to fabric name. 1649 * @new_fcf_record: pointer to fcf record. 1650 * 1651 * This routine compare the fcf record's fabric name with provided 1652 * fabric name. If the fabric name are identical this function 1653 * returns 1 else return 0. 1654 **/ 1655 static uint32_t 1656 lpfc_fab_name_match(uint8_t *fab_name, struct fcf_record *new_fcf_record) 1657 { 1658 if (fab_name[0] != bf_get(lpfc_fcf_record_fab_name_0, new_fcf_record)) 1659 return 0; 1660 if (fab_name[1] != bf_get(lpfc_fcf_record_fab_name_1, new_fcf_record)) 1661 return 0; 1662 if (fab_name[2] != bf_get(lpfc_fcf_record_fab_name_2, new_fcf_record)) 1663 return 0; 1664 if (fab_name[3] != bf_get(lpfc_fcf_record_fab_name_3, new_fcf_record)) 1665 return 0; 1666 if (fab_name[4] != bf_get(lpfc_fcf_record_fab_name_4, new_fcf_record)) 1667 return 0; 1668 if (fab_name[5] != bf_get(lpfc_fcf_record_fab_name_5, new_fcf_record)) 1669 return 0; 1670 if (fab_name[6] != bf_get(lpfc_fcf_record_fab_name_6, new_fcf_record)) 1671 return 0; 1672 if (fab_name[7] != bf_get(lpfc_fcf_record_fab_name_7, new_fcf_record)) 1673 return 0; 1674 return 1; 1675 } 1676 1677 /** 1678 * lpfc_sw_name_match - Check if the fcf switch name match. 1679 * @sw_name: pointer to switch name. 1680 * @new_fcf_record: pointer to fcf record. 1681 * 1682 * This routine compare the fcf record's switch name with provided 1683 * switch name. If the switch name are identical this function 1684 * returns 1 else return 0. 1685 **/ 1686 static uint32_t 1687 lpfc_sw_name_match(uint8_t *sw_name, struct fcf_record *new_fcf_record) 1688 { 1689 if (sw_name[0] != bf_get(lpfc_fcf_record_switch_name_0, new_fcf_record)) 1690 return 0; 1691 if (sw_name[1] != bf_get(lpfc_fcf_record_switch_name_1, new_fcf_record)) 1692 return 0; 1693 if (sw_name[2] != bf_get(lpfc_fcf_record_switch_name_2, new_fcf_record)) 1694 return 0; 1695 if (sw_name[3] != bf_get(lpfc_fcf_record_switch_name_3, new_fcf_record)) 1696 return 0; 1697 if (sw_name[4] != bf_get(lpfc_fcf_record_switch_name_4, new_fcf_record)) 1698 return 0; 1699 if (sw_name[5] != bf_get(lpfc_fcf_record_switch_name_5, new_fcf_record)) 1700 return 0; 1701 if (sw_name[6] != bf_get(lpfc_fcf_record_switch_name_6, new_fcf_record)) 1702 return 0; 1703 if (sw_name[7] != bf_get(lpfc_fcf_record_switch_name_7, new_fcf_record)) 1704 return 0; 1705 return 1; 1706 } 1707 1708 /** 1709 * lpfc_mac_addr_match - Check if the fcf mac address match. 1710 * @mac_addr: pointer to mac address. 1711 * @new_fcf_record: pointer to fcf record. 1712 * 1713 * This routine compare the fcf record's mac address with HBA's 1714 * FCF mac address. If the mac addresses are identical this function 1715 * returns 1 else return 0. 1716 **/ 1717 static uint32_t 1718 lpfc_mac_addr_match(uint8_t *mac_addr, struct fcf_record *new_fcf_record) 1719 { 1720 if (mac_addr[0] != bf_get(lpfc_fcf_record_mac_0, new_fcf_record)) 1721 return 0; 1722 if (mac_addr[1] != bf_get(lpfc_fcf_record_mac_1, new_fcf_record)) 1723 return 0; 1724 if (mac_addr[2] != bf_get(lpfc_fcf_record_mac_2, new_fcf_record)) 1725 return 0; 1726 if (mac_addr[3] != bf_get(lpfc_fcf_record_mac_3, new_fcf_record)) 1727 return 0; 1728 if (mac_addr[4] != bf_get(lpfc_fcf_record_mac_4, new_fcf_record)) 1729 return 0; 1730 if (mac_addr[5] != bf_get(lpfc_fcf_record_mac_5, new_fcf_record)) 1731 return 0; 1732 return 1; 1733 } 1734 1735 static bool 1736 lpfc_vlan_id_match(uint16_t curr_vlan_id, uint16_t new_vlan_id) 1737 { 1738 return (curr_vlan_id == new_vlan_id); 1739 } 1740 1741 /** 1742 * __lpfc_update_fcf_record_pri - update the lpfc_fcf_pri record. 1743 * @phba: pointer to lpfc hba data structure. 1744 * @fcf_index: Index for the lpfc_fcf_record. 1745 * @new_fcf_record: pointer to hba fcf record. 1746 * 1747 * This routine updates the driver FCF priority record from the new HBA FCF 1748 * record. The hbalock is asserted held in the code path calling this 1749 * routine. 1750 **/ 1751 static void 1752 __lpfc_update_fcf_record_pri(struct lpfc_hba *phba, uint16_t fcf_index, 1753 struct fcf_record *new_fcf_record 1754 ) 1755 { 1756 struct lpfc_fcf_pri *fcf_pri; 1757 1758 fcf_pri = &phba->fcf.fcf_pri[fcf_index]; 1759 fcf_pri->fcf_rec.fcf_index = fcf_index; 1760 /* FCF record priority */ 1761 fcf_pri->fcf_rec.priority = new_fcf_record->fip_priority; 1762 1763 } 1764 1765 /** 1766 * lpfc_copy_fcf_record - Copy fcf information to lpfc_hba. 1767 * @fcf_rec: pointer to driver fcf record. 1768 * @new_fcf_record: pointer to fcf record. 1769 * 1770 * This routine copies the FCF information from the FCF 1771 * record to lpfc_hba data structure. 1772 **/ 1773 static void 1774 lpfc_copy_fcf_record(struct lpfc_fcf_rec *fcf_rec, 1775 struct fcf_record *new_fcf_record) 1776 { 1777 /* Fabric name */ 1778 fcf_rec->fabric_name[0] = 1779 bf_get(lpfc_fcf_record_fab_name_0, new_fcf_record); 1780 fcf_rec->fabric_name[1] = 1781 bf_get(lpfc_fcf_record_fab_name_1, new_fcf_record); 1782 fcf_rec->fabric_name[2] = 1783 bf_get(lpfc_fcf_record_fab_name_2, new_fcf_record); 1784 fcf_rec->fabric_name[3] = 1785 bf_get(lpfc_fcf_record_fab_name_3, new_fcf_record); 1786 fcf_rec->fabric_name[4] = 1787 bf_get(lpfc_fcf_record_fab_name_4, new_fcf_record); 1788 fcf_rec->fabric_name[5] = 1789 bf_get(lpfc_fcf_record_fab_name_5, new_fcf_record); 1790 fcf_rec->fabric_name[6] = 1791 bf_get(lpfc_fcf_record_fab_name_6, new_fcf_record); 1792 fcf_rec->fabric_name[7] = 1793 bf_get(lpfc_fcf_record_fab_name_7, new_fcf_record); 1794 /* Mac address */ 1795 fcf_rec->mac_addr[0] = bf_get(lpfc_fcf_record_mac_0, new_fcf_record); 1796 fcf_rec->mac_addr[1] = bf_get(lpfc_fcf_record_mac_1, new_fcf_record); 1797 fcf_rec->mac_addr[2] = bf_get(lpfc_fcf_record_mac_2, new_fcf_record); 1798 fcf_rec->mac_addr[3] = bf_get(lpfc_fcf_record_mac_3, new_fcf_record); 1799 fcf_rec->mac_addr[4] = bf_get(lpfc_fcf_record_mac_4, new_fcf_record); 1800 fcf_rec->mac_addr[5] = bf_get(lpfc_fcf_record_mac_5, new_fcf_record); 1801 /* FCF record index */ 1802 fcf_rec->fcf_indx = bf_get(lpfc_fcf_record_fcf_index, new_fcf_record); 1803 /* FCF record priority */ 1804 fcf_rec->priority = new_fcf_record->fip_priority; 1805 /* Switch name */ 1806 fcf_rec->switch_name[0] = 1807 bf_get(lpfc_fcf_record_switch_name_0, new_fcf_record); 1808 fcf_rec->switch_name[1] = 1809 bf_get(lpfc_fcf_record_switch_name_1, new_fcf_record); 1810 fcf_rec->switch_name[2] = 1811 bf_get(lpfc_fcf_record_switch_name_2, new_fcf_record); 1812 fcf_rec->switch_name[3] = 1813 bf_get(lpfc_fcf_record_switch_name_3, new_fcf_record); 1814 fcf_rec->switch_name[4] = 1815 bf_get(lpfc_fcf_record_switch_name_4, new_fcf_record); 1816 fcf_rec->switch_name[5] = 1817 bf_get(lpfc_fcf_record_switch_name_5, new_fcf_record); 1818 fcf_rec->switch_name[6] = 1819 bf_get(lpfc_fcf_record_switch_name_6, new_fcf_record); 1820 fcf_rec->switch_name[7] = 1821 bf_get(lpfc_fcf_record_switch_name_7, new_fcf_record); 1822 } 1823 1824 /** 1825 * __lpfc_update_fcf_record - Update driver fcf record 1826 * @phba: pointer to lpfc hba data structure. 1827 * @fcf_rec: pointer to driver fcf record. 1828 * @new_fcf_record: pointer to hba fcf record. 1829 * @addr_mode: address mode to be set to the driver fcf record. 1830 * @vlan_id: vlan tag to be set to the driver fcf record. 1831 * @flag: flag bits to be set to the driver fcf record. 1832 * 1833 * This routine updates the driver FCF record from the new HBA FCF record 1834 * together with the address mode, vlan_id, and other informations. This 1835 * routine is called with the hbalock held. 1836 **/ 1837 static void 1838 __lpfc_update_fcf_record(struct lpfc_hba *phba, struct lpfc_fcf_rec *fcf_rec, 1839 struct fcf_record *new_fcf_record, uint32_t addr_mode, 1840 uint16_t vlan_id, uint32_t flag) 1841 { 1842 lockdep_assert_held(&phba->hbalock); 1843 1844 /* Copy the fields from the HBA's FCF record */ 1845 lpfc_copy_fcf_record(fcf_rec, new_fcf_record); 1846 /* Update other fields of driver FCF record */ 1847 fcf_rec->addr_mode = addr_mode; 1848 fcf_rec->vlan_id = vlan_id; 1849 fcf_rec->flag |= (flag | RECORD_VALID); 1850 __lpfc_update_fcf_record_pri(phba, 1851 bf_get(lpfc_fcf_record_fcf_index, new_fcf_record), 1852 new_fcf_record); 1853 } 1854 1855 /** 1856 * lpfc_register_fcf - Register the FCF with hba. 1857 * @phba: pointer to lpfc hba data structure. 1858 * 1859 * This routine issues a register fcfi mailbox command to register 1860 * the fcf with HBA. 1861 **/ 1862 static void 1863 lpfc_register_fcf(struct lpfc_hba *phba) 1864 { 1865 LPFC_MBOXQ_t *fcf_mbxq; 1866 int rc; 1867 1868 spin_lock_irq(&phba->hbalock); 1869 /* If the FCF is not available do nothing. */ 1870 if (!(phba->fcf.fcf_flag & FCF_AVAILABLE)) { 1871 phba->hba_flag &= ~(FCF_TS_INPROG | FCF_RR_INPROG); 1872 spin_unlock_irq(&phba->hbalock); 1873 return; 1874 } 1875 1876 /* The FCF is already registered, start discovery */ 1877 if (phba->fcf.fcf_flag & FCF_REGISTERED) { 1878 phba->fcf.fcf_flag |= (FCF_SCAN_DONE | FCF_IN_USE); 1879 phba->hba_flag &= ~FCF_TS_INPROG; 1880 if (phba->pport->port_state != LPFC_FLOGI && 1881 test_bit(FC_FABRIC, &phba->pport->fc_flag)) { 1882 phba->hba_flag |= FCF_RR_INPROG; 1883 spin_unlock_irq(&phba->hbalock); 1884 lpfc_initial_flogi(phba->pport); 1885 return; 1886 } 1887 spin_unlock_irq(&phba->hbalock); 1888 return; 1889 } 1890 spin_unlock_irq(&phba->hbalock); 1891 1892 fcf_mbxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 1893 if (!fcf_mbxq) { 1894 spin_lock_irq(&phba->hbalock); 1895 phba->hba_flag &= ~(FCF_TS_INPROG | FCF_RR_INPROG); 1896 spin_unlock_irq(&phba->hbalock); 1897 return; 1898 } 1899 1900 lpfc_reg_fcfi(phba, fcf_mbxq); 1901 fcf_mbxq->vport = phba->pport; 1902 fcf_mbxq->mbox_cmpl = lpfc_mbx_cmpl_reg_fcfi; 1903 rc = lpfc_sli_issue_mbox(phba, fcf_mbxq, MBX_NOWAIT); 1904 if (rc == MBX_NOT_FINISHED) { 1905 spin_lock_irq(&phba->hbalock); 1906 phba->hba_flag &= ~(FCF_TS_INPROG | FCF_RR_INPROG); 1907 spin_unlock_irq(&phba->hbalock); 1908 mempool_free(fcf_mbxq, phba->mbox_mem_pool); 1909 } 1910 1911 return; 1912 } 1913 1914 /** 1915 * lpfc_match_fcf_conn_list - Check if the FCF record can be used for discovery. 1916 * @phba: pointer to lpfc hba data structure. 1917 * @new_fcf_record: pointer to fcf record. 1918 * @boot_flag: Indicates if this record used by boot bios. 1919 * @addr_mode: The address mode to be used by this FCF 1920 * @vlan_id: The vlan id to be used as vlan tagging by this FCF. 1921 * 1922 * This routine compare the fcf record with connect list obtained from the 1923 * config region to decide if this FCF can be used for SAN discovery. It returns 1924 * 1 if this record can be used for SAN discovery else return zero. If this FCF 1925 * record can be used for SAN discovery, the boot_flag will indicate if this FCF 1926 * is used by boot bios and addr_mode will indicate the addressing mode to be 1927 * used for this FCF when the function returns. 1928 * If the FCF record need to be used with a particular vlan id, the vlan is 1929 * set in the vlan_id on return of the function. If not VLAN tagging need to 1930 * be used with the FCF vlan_id will be set to LPFC_FCOE_NULL_VID; 1931 **/ 1932 static int 1933 lpfc_match_fcf_conn_list(struct lpfc_hba *phba, 1934 struct fcf_record *new_fcf_record, 1935 uint32_t *boot_flag, uint32_t *addr_mode, 1936 uint16_t *vlan_id) 1937 { 1938 struct lpfc_fcf_conn_entry *conn_entry; 1939 int i, j, fcf_vlan_id = 0; 1940 1941 /* Find the lowest VLAN id in the FCF record */ 1942 for (i = 0; i < 512; i++) { 1943 if (new_fcf_record->vlan_bitmap[i]) { 1944 fcf_vlan_id = i * 8; 1945 j = 0; 1946 while (!((new_fcf_record->vlan_bitmap[i] >> j) & 1)) { 1947 j++; 1948 fcf_vlan_id++; 1949 } 1950 break; 1951 } 1952 } 1953 1954 /* FCF not valid/available or solicitation in progress */ 1955 if (!bf_get(lpfc_fcf_record_fcf_avail, new_fcf_record) || 1956 !bf_get(lpfc_fcf_record_fcf_valid, new_fcf_record) || 1957 bf_get(lpfc_fcf_record_fcf_sol, new_fcf_record)) 1958 return 0; 1959 1960 if (!(phba->hba_flag & HBA_FIP_SUPPORT)) { 1961 *boot_flag = 0; 1962 *addr_mode = bf_get(lpfc_fcf_record_mac_addr_prov, 1963 new_fcf_record); 1964 if (phba->valid_vlan) 1965 *vlan_id = phba->vlan_id; 1966 else 1967 *vlan_id = LPFC_FCOE_NULL_VID; 1968 return 1; 1969 } 1970 1971 /* 1972 * If there are no FCF connection table entry, driver connect to all 1973 * FCFs. 1974 */ 1975 if (list_empty(&phba->fcf_conn_rec_list)) { 1976 *boot_flag = 0; 1977 *addr_mode = bf_get(lpfc_fcf_record_mac_addr_prov, 1978 new_fcf_record); 1979 1980 /* 1981 * When there are no FCF connect entries, use driver's default 1982 * addressing mode - FPMA. 1983 */ 1984 if (*addr_mode & LPFC_FCF_FPMA) 1985 *addr_mode = LPFC_FCF_FPMA; 1986 1987 /* If FCF record report a vlan id use that vlan id */ 1988 if (fcf_vlan_id) 1989 *vlan_id = fcf_vlan_id; 1990 else 1991 *vlan_id = LPFC_FCOE_NULL_VID; 1992 return 1; 1993 } 1994 1995 list_for_each_entry(conn_entry, 1996 &phba->fcf_conn_rec_list, list) { 1997 if (!(conn_entry->conn_rec.flags & FCFCNCT_VALID)) 1998 continue; 1999 2000 if ((conn_entry->conn_rec.flags & FCFCNCT_FBNM_VALID) && 2001 !lpfc_fab_name_match(conn_entry->conn_rec.fabric_name, 2002 new_fcf_record)) 2003 continue; 2004 if ((conn_entry->conn_rec.flags & FCFCNCT_SWNM_VALID) && 2005 !lpfc_sw_name_match(conn_entry->conn_rec.switch_name, 2006 new_fcf_record)) 2007 continue; 2008 if (conn_entry->conn_rec.flags & FCFCNCT_VLAN_VALID) { 2009 /* 2010 * If the vlan bit map does not have the bit set for the 2011 * vlan id to be used, then it is not a match. 2012 */ 2013 if (!(new_fcf_record->vlan_bitmap 2014 [conn_entry->conn_rec.vlan_tag / 8] & 2015 (1 << (conn_entry->conn_rec.vlan_tag % 8)))) 2016 continue; 2017 } 2018 2019 /* 2020 * If connection record does not support any addressing mode, 2021 * skip the FCF record. 2022 */ 2023 if (!(bf_get(lpfc_fcf_record_mac_addr_prov, new_fcf_record) 2024 & (LPFC_FCF_FPMA | LPFC_FCF_SPMA))) 2025 continue; 2026 2027 /* 2028 * Check if the connection record specifies a required 2029 * addressing mode. 2030 */ 2031 if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) && 2032 !(conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED)) { 2033 2034 /* 2035 * If SPMA required but FCF not support this continue. 2036 */ 2037 if ((conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) && 2038 !(bf_get(lpfc_fcf_record_mac_addr_prov, 2039 new_fcf_record) & LPFC_FCF_SPMA)) 2040 continue; 2041 2042 /* 2043 * If FPMA required but FCF not support this continue. 2044 */ 2045 if (!(conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) && 2046 !(bf_get(lpfc_fcf_record_mac_addr_prov, 2047 new_fcf_record) & LPFC_FCF_FPMA)) 2048 continue; 2049 } 2050 2051 /* 2052 * This fcf record matches filtering criteria. 2053 */ 2054 if (conn_entry->conn_rec.flags & FCFCNCT_BOOT) 2055 *boot_flag = 1; 2056 else 2057 *boot_flag = 0; 2058 2059 /* 2060 * If user did not specify any addressing mode, or if the 2061 * preferred addressing mode specified by user is not supported 2062 * by FCF, allow fabric to pick the addressing mode. 2063 */ 2064 *addr_mode = bf_get(lpfc_fcf_record_mac_addr_prov, 2065 new_fcf_record); 2066 /* 2067 * If the user specified a required address mode, assign that 2068 * address mode 2069 */ 2070 if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) && 2071 (!(conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED))) 2072 *addr_mode = (conn_entry->conn_rec.flags & 2073 FCFCNCT_AM_SPMA) ? 2074 LPFC_FCF_SPMA : LPFC_FCF_FPMA; 2075 /* 2076 * If the user specified a preferred address mode, use the 2077 * addr mode only if FCF support the addr_mode. 2078 */ 2079 else if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) && 2080 (conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED) && 2081 (conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) && 2082 (*addr_mode & LPFC_FCF_SPMA)) 2083 *addr_mode = LPFC_FCF_SPMA; 2084 else if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) && 2085 (conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED) && 2086 !(conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) && 2087 (*addr_mode & LPFC_FCF_FPMA)) 2088 *addr_mode = LPFC_FCF_FPMA; 2089 2090 /* If matching connect list has a vlan id, use it */ 2091 if (conn_entry->conn_rec.flags & FCFCNCT_VLAN_VALID) 2092 *vlan_id = conn_entry->conn_rec.vlan_tag; 2093 /* 2094 * If no vlan id is specified in connect list, use the vlan id 2095 * in the FCF record 2096 */ 2097 else if (fcf_vlan_id) 2098 *vlan_id = fcf_vlan_id; 2099 else 2100 *vlan_id = LPFC_FCOE_NULL_VID; 2101 2102 return 1; 2103 } 2104 2105 return 0; 2106 } 2107 2108 /** 2109 * lpfc_check_pending_fcoe_event - Check if there is pending fcoe event. 2110 * @phba: pointer to lpfc hba data structure. 2111 * @unreg_fcf: Unregister FCF if FCF table need to be re-scaned. 2112 * 2113 * This function check if there is any fcoe event pending while driver 2114 * scan FCF entries. If there is any pending event, it will restart the 2115 * FCF saning and return 1 else return 0. 2116 */ 2117 int 2118 lpfc_check_pending_fcoe_event(struct lpfc_hba *phba, uint8_t unreg_fcf) 2119 { 2120 /* 2121 * If the Link is up and no FCoE events while in the 2122 * FCF discovery, no need to restart FCF discovery. 2123 */ 2124 if ((phba->link_state >= LPFC_LINK_UP) && 2125 (phba->fcoe_eventtag == phba->fcoe_eventtag_at_fcf_scan)) 2126 return 0; 2127 2128 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2129 "2768 Pending link or FCF event during current " 2130 "handling of the previous event: link_state:x%x, " 2131 "evt_tag_at_scan:x%x, evt_tag_current:x%x\n", 2132 phba->link_state, phba->fcoe_eventtag_at_fcf_scan, 2133 phba->fcoe_eventtag); 2134 2135 spin_lock_irq(&phba->hbalock); 2136 phba->fcf.fcf_flag &= ~FCF_AVAILABLE; 2137 spin_unlock_irq(&phba->hbalock); 2138 2139 if (phba->link_state >= LPFC_LINK_UP) { 2140 lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY, 2141 "2780 Restart FCF table scan due to " 2142 "pending FCF event:evt_tag_at_scan:x%x, " 2143 "evt_tag_current:x%x\n", 2144 phba->fcoe_eventtag_at_fcf_scan, 2145 phba->fcoe_eventtag); 2146 lpfc_sli4_fcf_scan_read_fcf_rec(phba, LPFC_FCOE_FCF_GET_FIRST); 2147 } else { 2148 /* 2149 * Do not continue FCF discovery and clear FCF_TS_INPROG 2150 * flag 2151 */ 2152 lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY, 2153 "2833 Stop FCF discovery process due to link " 2154 "state change (x%x)\n", phba->link_state); 2155 spin_lock_irq(&phba->hbalock); 2156 phba->hba_flag &= ~(FCF_TS_INPROG | FCF_RR_INPROG); 2157 phba->fcf.fcf_flag &= ~(FCF_REDISC_FOV | FCF_DISCOVERY); 2158 spin_unlock_irq(&phba->hbalock); 2159 } 2160 2161 /* Unregister the currently registered FCF if required */ 2162 if (unreg_fcf) { 2163 spin_lock_irq(&phba->hbalock); 2164 phba->fcf.fcf_flag &= ~FCF_REGISTERED; 2165 spin_unlock_irq(&phba->hbalock); 2166 lpfc_sli4_unregister_fcf(phba); 2167 } 2168 return 1; 2169 } 2170 2171 /** 2172 * lpfc_sli4_new_fcf_random_select - Randomly select an eligible new fcf record 2173 * @phba: pointer to lpfc hba data structure. 2174 * @fcf_cnt: number of eligible fcf record seen so far. 2175 * 2176 * This function makes an running random selection decision on FCF record to 2177 * use through a sequence of @fcf_cnt eligible FCF records with equal 2178 * probability. To perform integer manunipulation of random numbers with 2179 * size unit32_t, a 16-bit random number returned from get_random_u16() is 2180 * taken as the random random number generated. 2181 * 2182 * Returns true when outcome is for the newly read FCF record should be 2183 * chosen; otherwise, return false when outcome is for keeping the previously 2184 * chosen FCF record. 2185 **/ 2186 static bool 2187 lpfc_sli4_new_fcf_random_select(struct lpfc_hba *phba, uint32_t fcf_cnt) 2188 { 2189 uint32_t rand_num; 2190 2191 /* Get 16-bit uniform random number */ 2192 rand_num = get_random_u16(); 2193 2194 /* Decision with probability 1/fcf_cnt */ 2195 if ((fcf_cnt * rand_num) < 0xFFFF) 2196 return true; 2197 else 2198 return false; 2199 } 2200 2201 /** 2202 * lpfc_sli4_fcf_rec_mbox_parse - Parse read_fcf mbox command. 2203 * @phba: pointer to lpfc hba data structure. 2204 * @mboxq: pointer to mailbox object. 2205 * @next_fcf_index: pointer to holder of next fcf index. 2206 * 2207 * This routine parses the non-embedded fcf mailbox command by performing the 2208 * necessarily error checking, non-embedded read FCF record mailbox command 2209 * SGE parsing, and endianness swapping. 2210 * 2211 * Returns the pointer to the new FCF record in the non-embedded mailbox 2212 * command DMA memory if successfully, other NULL. 2213 */ 2214 static struct fcf_record * 2215 lpfc_sli4_fcf_rec_mbox_parse(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq, 2216 uint16_t *next_fcf_index) 2217 { 2218 void *virt_addr; 2219 struct lpfc_mbx_sge sge; 2220 struct lpfc_mbx_read_fcf_tbl *read_fcf; 2221 uint32_t shdr_status, shdr_add_status, if_type; 2222 union lpfc_sli4_cfg_shdr *shdr; 2223 struct fcf_record *new_fcf_record; 2224 2225 /* Get the first SGE entry from the non-embedded DMA memory. This 2226 * routine only uses a single SGE. 2227 */ 2228 lpfc_sli4_mbx_sge_get(mboxq, 0, &sge); 2229 if (unlikely(!mboxq->sge_array)) { 2230 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 2231 "2524 Failed to get the non-embedded SGE " 2232 "virtual address\n"); 2233 return NULL; 2234 } 2235 virt_addr = mboxq->sge_array->addr[0]; 2236 2237 shdr = (union lpfc_sli4_cfg_shdr *)virt_addr; 2238 lpfc_sli_pcimem_bcopy(shdr, shdr, 2239 sizeof(union lpfc_sli4_cfg_shdr)); 2240 shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response); 2241 if_type = bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf); 2242 shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response); 2243 if (shdr_status || shdr_add_status) { 2244 if (shdr_status == STATUS_FCF_TABLE_EMPTY || 2245 if_type == LPFC_SLI_INTF_IF_TYPE_2) 2246 lpfc_printf_log(phba, KERN_ERR, 2247 LOG_TRACE_EVENT, 2248 "2726 READ_FCF_RECORD Indicates empty " 2249 "FCF table.\n"); 2250 else 2251 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 2252 "2521 READ_FCF_RECORD mailbox failed " 2253 "with status x%x add_status x%x, " 2254 "mbx\n", shdr_status, shdr_add_status); 2255 return NULL; 2256 } 2257 2258 /* Interpreting the returned information of the FCF record */ 2259 read_fcf = (struct lpfc_mbx_read_fcf_tbl *)virt_addr; 2260 lpfc_sli_pcimem_bcopy(read_fcf, read_fcf, 2261 sizeof(struct lpfc_mbx_read_fcf_tbl)); 2262 *next_fcf_index = bf_get(lpfc_mbx_read_fcf_tbl_nxt_vindx, read_fcf); 2263 new_fcf_record = (struct fcf_record *)(virt_addr + 2264 sizeof(struct lpfc_mbx_read_fcf_tbl)); 2265 lpfc_sli_pcimem_bcopy(new_fcf_record, new_fcf_record, 2266 offsetof(struct fcf_record, vlan_bitmap)); 2267 new_fcf_record->word137 = le32_to_cpu(new_fcf_record->word137); 2268 new_fcf_record->word138 = le32_to_cpu(new_fcf_record->word138); 2269 2270 return new_fcf_record; 2271 } 2272 2273 /** 2274 * lpfc_sli4_log_fcf_record_info - Log the information of a fcf record 2275 * @phba: pointer to lpfc hba data structure. 2276 * @fcf_record: pointer to the fcf record. 2277 * @vlan_id: the lowest vlan identifier associated to this fcf record. 2278 * @next_fcf_index: the index to the next fcf record in hba's fcf table. 2279 * 2280 * This routine logs the detailed FCF record if the LOG_FIP loggin is 2281 * enabled. 2282 **/ 2283 static void 2284 lpfc_sli4_log_fcf_record_info(struct lpfc_hba *phba, 2285 struct fcf_record *fcf_record, 2286 uint16_t vlan_id, 2287 uint16_t next_fcf_index) 2288 { 2289 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2290 "2764 READ_FCF_RECORD:\n" 2291 "\tFCF_Index : x%x\n" 2292 "\tFCF_Avail : x%x\n" 2293 "\tFCF_Valid : x%x\n" 2294 "\tFCF_SOL : x%x\n" 2295 "\tFIP_Priority : x%x\n" 2296 "\tMAC_Provider : x%x\n" 2297 "\tLowest VLANID : x%x\n" 2298 "\tFCF_MAC Addr : x%x:%x:%x:%x:%x:%x\n" 2299 "\tFabric_Name : x%x:%x:%x:%x:%x:%x:%x:%x\n" 2300 "\tSwitch_Name : x%x:%x:%x:%x:%x:%x:%x:%x\n" 2301 "\tNext_FCF_Index: x%x\n", 2302 bf_get(lpfc_fcf_record_fcf_index, fcf_record), 2303 bf_get(lpfc_fcf_record_fcf_avail, fcf_record), 2304 bf_get(lpfc_fcf_record_fcf_valid, fcf_record), 2305 bf_get(lpfc_fcf_record_fcf_sol, fcf_record), 2306 fcf_record->fip_priority, 2307 bf_get(lpfc_fcf_record_mac_addr_prov, fcf_record), 2308 vlan_id, 2309 bf_get(lpfc_fcf_record_mac_0, fcf_record), 2310 bf_get(lpfc_fcf_record_mac_1, fcf_record), 2311 bf_get(lpfc_fcf_record_mac_2, fcf_record), 2312 bf_get(lpfc_fcf_record_mac_3, fcf_record), 2313 bf_get(lpfc_fcf_record_mac_4, fcf_record), 2314 bf_get(lpfc_fcf_record_mac_5, fcf_record), 2315 bf_get(lpfc_fcf_record_fab_name_0, fcf_record), 2316 bf_get(lpfc_fcf_record_fab_name_1, fcf_record), 2317 bf_get(lpfc_fcf_record_fab_name_2, fcf_record), 2318 bf_get(lpfc_fcf_record_fab_name_3, fcf_record), 2319 bf_get(lpfc_fcf_record_fab_name_4, fcf_record), 2320 bf_get(lpfc_fcf_record_fab_name_5, fcf_record), 2321 bf_get(lpfc_fcf_record_fab_name_6, fcf_record), 2322 bf_get(lpfc_fcf_record_fab_name_7, fcf_record), 2323 bf_get(lpfc_fcf_record_switch_name_0, fcf_record), 2324 bf_get(lpfc_fcf_record_switch_name_1, fcf_record), 2325 bf_get(lpfc_fcf_record_switch_name_2, fcf_record), 2326 bf_get(lpfc_fcf_record_switch_name_3, fcf_record), 2327 bf_get(lpfc_fcf_record_switch_name_4, fcf_record), 2328 bf_get(lpfc_fcf_record_switch_name_5, fcf_record), 2329 bf_get(lpfc_fcf_record_switch_name_6, fcf_record), 2330 bf_get(lpfc_fcf_record_switch_name_7, fcf_record), 2331 next_fcf_index); 2332 } 2333 2334 /** 2335 * lpfc_sli4_fcf_record_match - testing new FCF record for matching existing FCF 2336 * @phba: pointer to lpfc hba data structure. 2337 * @fcf_rec: pointer to an existing FCF record. 2338 * @new_fcf_record: pointer to a new FCF record. 2339 * @new_vlan_id: vlan id from the new FCF record. 2340 * 2341 * This function performs matching test of a new FCF record against an existing 2342 * FCF record. If the new_vlan_id passed in is LPFC_FCOE_IGNORE_VID, vlan id 2343 * will not be used as part of the FCF record matching criteria. 2344 * 2345 * Returns true if all the fields matching, otherwise returns false. 2346 */ 2347 static bool 2348 lpfc_sli4_fcf_record_match(struct lpfc_hba *phba, 2349 struct lpfc_fcf_rec *fcf_rec, 2350 struct fcf_record *new_fcf_record, 2351 uint16_t new_vlan_id) 2352 { 2353 if (new_vlan_id != LPFC_FCOE_IGNORE_VID) 2354 if (!lpfc_vlan_id_match(fcf_rec->vlan_id, new_vlan_id)) 2355 return false; 2356 if (!lpfc_mac_addr_match(fcf_rec->mac_addr, new_fcf_record)) 2357 return false; 2358 if (!lpfc_sw_name_match(fcf_rec->switch_name, new_fcf_record)) 2359 return false; 2360 if (!lpfc_fab_name_match(fcf_rec->fabric_name, new_fcf_record)) 2361 return false; 2362 if (fcf_rec->priority != new_fcf_record->fip_priority) 2363 return false; 2364 return true; 2365 } 2366 2367 /** 2368 * lpfc_sli4_fcf_rr_next_proc - processing next roundrobin fcf 2369 * @vport: Pointer to vport object. 2370 * @fcf_index: index to next fcf. 2371 * 2372 * This function processing the roundrobin fcf failover to next fcf index. 2373 * When this function is invoked, there will be a current fcf registered 2374 * for flogi. 2375 * Return: 0 for continue retrying flogi on currently registered fcf; 2376 * 1 for stop flogi on currently registered fcf; 2377 */ 2378 int lpfc_sli4_fcf_rr_next_proc(struct lpfc_vport *vport, uint16_t fcf_index) 2379 { 2380 struct lpfc_hba *phba = vport->phba; 2381 int rc; 2382 2383 if (fcf_index == LPFC_FCOE_FCF_NEXT_NONE) { 2384 spin_lock_irq(&phba->hbalock); 2385 if (phba->hba_flag & HBA_DEVLOSS_TMO) { 2386 spin_unlock_irq(&phba->hbalock); 2387 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2388 "2872 Devloss tmo with no eligible " 2389 "FCF, unregister in-use FCF (x%x) " 2390 "and rescan FCF table\n", 2391 phba->fcf.current_rec.fcf_indx); 2392 lpfc_unregister_fcf_rescan(phba); 2393 goto stop_flogi_current_fcf; 2394 } 2395 /* Mark the end to FLOGI roundrobin failover */ 2396 phba->hba_flag &= ~FCF_RR_INPROG; 2397 /* Allow action to new fcf asynchronous event */ 2398 phba->fcf.fcf_flag &= ~(FCF_AVAILABLE | FCF_SCAN_DONE); 2399 spin_unlock_irq(&phba->hbalock); 2400 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2401 "2865 No FCF available, stop roundrobin FCF " 2402 "failover and change port state:x%x/x%x\n", 2403 phba->pport->port_state, LPFC_VPORT_UNKNOWN); 2404 phba->pport->port_state = LPFC_VPORT_UNKNOWN; 2405 2406 if (!phba->fcf.fcf_redisc_attempted) { 2407 lpfc_unregister_fcf(phba); 2408 2409 rc = lpfc_sli4_redisc_fcf_table(phba); 2410 if (!rc) { 2411 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2412 "3195 Rediscover FCF table\n"); 2413 phba->fcf.fcf_redisc_attempted = 1; 2414 lpfc_sli4_clear_fcf_rr_bmask(phba); 2415 } else { 2416 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP, 2417 "3196 Rediscover FCF table " 2418 "failed. Status:x%x\n", rc); 2419 } 2420 } else { 2421 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP, 2422 "3197 Already rediscover FCF table " 2423 "attempted. No more retry\n"); 2424 } 2425 goto stop_flogi_current_fcf; 2426 } else { 2427 lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_ELS, 2428 "2794 Try FLOGI roundrobin FCF failover to " 2429 "(x%x)\n", fcf_index); 2430 rc = lpfc_sli4_fcf_rr_read_fcf_rec(phba, fcf_index); 2431 if (rc) 2432 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP | LOG_ELS, 2433 "2761 FLOGI roundrobin FCF failover " 2434 "failed (rc:x%x) to read FCF (x%x)\n", 2435 rc, phba->fcf.current_rec.fcf_indx); 2436 else 2437 goto stop_flogi_current_fcf; 2438 } 2439 return 0; 2440 2441 stop_flogi_current_fcf: 2442 lpfc_can_disctmo(vport); 2443 return 1; 2444 } 2445 2446 /** 2447 * lpfc_sli4_fcf_pri_list_del 2448 * @phba: pointer to lpfc hba data structure. 2449 * @fcf_index: the index of the fcf record to delete 2450 * This routine checks the on list flag of the fcf_index to be deleted. 2451 * If it is one the list then it is removed from the list, and the flag 2452 * is cleared. This routine grab the hbalock before removing the fcf 2453 * record from the list. 2454 **/ 2455 static void lpfc_sli4_fcf_pri_list_del(struct lpfc_hba *phba, 2456 uint16_t fcf_index) 2457 { 2458 struct lpfc_fcf_pri *new_fcf_pri; 2459 2460 new_fcf_pri = &phba->fcf.fcf_pri[fcf_index]; 2461 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2462 "3058 deleting idx x%x pri x%x flg x%x\n", 2463 fcf_index, new_fcf_pri->fcf_rec.priority, 2464 new_fcf_pri->fcf_rec.flag); 2465 spin_lock_irq(&phba->hbalock); 2466 if (new_fcf_pri->fcf_rec.flag & LPFC_FCF_ON_PRI_LIST) { 2467 if (phba->fcf.current_rec.priority == 2468 new_fcf_pri->fcf_rec.priority) 2469 phba->fcf.eligible_fcf_cnt--; 2470 list_del_init(&new_fcf_pri->list); 2471 new_fcf_pri->fcf_rec.flag &= ~LPFC_FCF_ON_PRI_LIST; 2472 } 2473 spin_unlock_irq(&phba->hbalock); 2474 } 2475 2476 /** 2477 * lpfc_sli4_set_fcf_flogi_fail 2478 * @phba: pointer to lpfc hba data structure. 2479 * @fcf_index: the index of the fcf record to update 2480 * This routine acquires the hbalock and then set the LPFC_FCF_FLOGI_FAILED 2481 * flag so the round robin selection for the particular priority level 2482 * will try a different fcf record that does not have this bit set. 2483 * If the fcf record is re-read for any reason this flag is cleared brfore 2484 * adding it to the priority list. 2485 **/ 2486 void 2487 lpfc_sli4_set_fcf_flogi_fail(struct lpfc_hba *phba, uint16_t fcf_index) 2488 { 2489 struct lpfc_fcf_pri *new_fcf_pri; 2490 new_fcf_pri = &phba->fcf.fcf_pri[fcf_index]; 2491 spin_lock_irq(&phba->hbalock); 2492 new_fcf_pri->fcf_rec.flag |= LPFC_FCF_FLOGI_FAILED; 2493 spin_unlock_irq(&phba->hbalock); 2494 } 2495 2496 /** 2497 * lpfc_sli4_fcf_pri_list_add 2498 * @phba: pointer to lpfc hba data structure. 2499 * @fcf_index: the index of the fcf record to add 2500 * @new_fcf_record: pointer to a new FCF record. 2501 * This routine checks the priority of the fcf_index to be added. 2502 * If it is a lower priority than the current head of the fcf_pri list 2503 * then it is added to the list in the right order. 2504 * If it is the same priority as the current head of the list then it 2505 * is added to the head of the list and its bit in the rr_bmask is set. 2506 * If the fcf_index to be added is of a higher priority than the current 2507 * head of the list then the rr_bmask is cleared, its bit is set in the 2508 * rr_bmask and it is added to the head of the list. 2509 * returns: 2510 * 0=success 1=failure 2511 **/ 2512 static int lpfc_sli4_fcf_pri_list_add(struct lpfc_hba *phba, 2513 uint16_t fcf_index, 2514 struct fcf_record *new_fcf_record) 2515 { 2516 uint16_t current_fcf_pri; 2517 uint16_t last_index; 2518 struct lpfc_fcf_pri *fcf_pri; 2519 struct lpfc_fcf_pri *next_fcf_pri; 2520 struct lpfc_fcf_pri *new_fcf_pri; 2521 int ret; 2522 2523 new_fcf_pri = &phba->fcf.fcf_pri[fcf_index]; 2524 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2525 "3059 adding idx x%x pri x%x flg x%x\n", 2526 fcf_index, new_fcf_record->fip_priority, 2527 new_fcf_pri->fcf_rec.flag); 2528 spin_lock_irq(&phba->hbalock); 2529 if (new_fcf_pri->fcf_rec.flag & LPFC_FCF_ON_PRI_LIST) 2530 list_del_init(&new_fcf_pri->list); 2531 new_fcf_pri->fcf_rec.fcf_index = fcf_index; 2532 new_fcf_pri->fcf_rec.priority = new_fcf_record->fip_priority; 2533 if (list_empty(&phba->fcf.fcf_pri_list)) { 2534 list_add(&new_fcf_pri->list, &phba->fcf.fcf_pri_list); 2535 ret = lpfc_sli4_fcf_rr_index_set(phba, 2536 new_fcf_pri->fcf_rec.fcf_index); 2537 goto out; 2538 } 2539 2540 last_index = find_first_bit(phba->fcf.fcf_rr_bmask, 2541 LPFC_SLI4_FCF_TBL_INDX_MAX); 2542 if (last_index >= LPFC_SLI4_FCF_TBL_INDX_MAX) { 2543 ret = 0; /* Empty rr list */ 2544 goto out; 2545 } 2546 current_fcf_pri = phba->fcf.fcf_pri[last_index].fcf_rec.priority; 2547 if (new_fcf_pri->fcf_rec.priority <= current_fcf_pri) { 2548 list_add(&new_fcf_pri->list, &phba->fcf.fcf_pri_list); 2549 if (new_fcf_pri->fcf_rec.priority < current_fcf_pri) { 2550 memset(phba->fcf.fcf_rr_bmask, 0, 2551 sizeof(*phba->fcf.fcf_rr_bmask)); 2552 /* fcfs_at_this_priority_level = 1; */ 2553 phba->fcf.eligible_fcf_cnt = 1; 2554 } else 2555 /* fcfs_at_this_priority_level++; */ 2556 phba->fcf.eligible_fcf_cnt++; 2557 ret = lpfc_sli4_fcf_rr_index_set(phba, 2558 new_fcf_pri->fcf_rec.fcf_index); 2559 goto out; 2560 } 2561 2562 list_for_each_entry_safe(fcf_pri, next_fcf_pri, 2563 &phba->fcf.fcf_pri_list, list) { 2564 if (new_fcf_pri->fcf_rec.priority <= 2565 fcf_pri->fcf_rec.priority) { 2566 if (fcf_pri->list.prev == &phba->fcf.fcf_pri_list) 2567 list_add(&new_fcf_pri->list, 2568 &phba->fcf.fcf_pri_list); 2569 else 2570 list_add(&new_fcf_pri->list, 2571 &((struct lpfc_fcf_pri *) 2572 fcf_pri->list.prev)->list); 2573 ret = 0; 2574 goto out; 2575 } else if (fcf_pri->list.next == &phba->fcf.fcf_pri_list 2576 || new_fcf_pri->fcf_rec.priority < 2577 next_fcf_pri->fcf_rec.priority) { 2578 list_add(&new_fcf_pri->list, &fcf_pri->list); 2579 ret = 0; 2580 goto out; 2581 } 2582 if (new_fcf_pri->fcf_rec.priority > fcf_pri->fcf_rec.priority) 2583 continue; 2584 2585 } 2586 ret = 1; 2587 out: 2588 /* we use = instead of |= to clear the FLOGI_FAILED flag. */ 2589 new_fcf_pri->fcf_rec.flag = LPFC_FCF_ON_PRI_LIST; 2590 spin_unlock_irq(&phba->hbalock); 2591 return ret; 2592 } 2593 2594 /** 2595 * lpfc_mbx_cmpl_fcf_scan_read_fcf_rec - fcf scan read_fcf mbox cmpl handler. 2596 * @phba: pointer to lpfc hba data structure. 2597 * @mboxq: pointer to mailbox object. 2598 * 2599 * This function iterates through all the fcf records available in 2600 * HBA and chooses the optimal FCF record for discovery. After finding 2601 * the FCF for discovery it registers the FCF record and kicks start 2602 * discovery. 2603 * If FCF_IN_USE flag is set in currently used FCF, the routine tries to 2604 * use an FCF record which matches fabric name and mac address of the 2605 * currently used FCF record. 2606 * If the driver supports only one FCF, it will try to use the FCF record 2607 * used by BOOT_BIOS. 2608 */ 2609 void 2610 lpfc_mbx_cmpl_fcf_scan_read_fcf_rec(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq) 2611 { 2612 struct fcf_record *new_fcf_record; 2613 uint32_t boot_flag, addr_mode; 2614 uint16_t fcf_index, next_fcf_index; 2615 struct lpfc_fcf_rec *fcf_rec = NULL; 2616 uint16_t vlan_id = LPFC_FCOE_NULL_VID; 2617 bool select_new_fcf; 2618 int rc; 2619 2620 /* If there is pending FCoE event restart FCF table scan */ 2621 if (lpfc_check_pending_fcoe_event(phba, LPFC_SKIP_UNREG_FCF)) { 2622 lpfc_sli4_mbox_cmd_free(phba, mboxq); 2623 return; 2624 } 2625 2626 /* Parse the FCF record from the non-embedded mailbox command */ 2627 new_fcf_record = lpfc_sli4_fcf_rec_mbox_parse(phba, mboxq, 2628 &next_fcf_index); 2629 if (!new_fcf_record) { 2630 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 2631 "2765 Mailbox command READ_FCF_RECORD " 2632 "failed to retrieve a FCF record.\n"); 2633 /* Let next new FCF event trigger fast failover */ 2634 spin_lock_irq(&phba->hbalock); 2635 phba->hba_flag &= ~FCF_TS_INPROG; 2636 spin_unlock_irq(&phba->hbalock); 2637 lpfc_sli4_mbox_cmd_free(phba, mboxq); 2638 return; 2639 } 2640 2641 /* Check the FCF record against the connection list */ 2642 rc = lpfc_match_fcf_conn_list(phba, new_fcf_record, &boot_flag, 2643 &addr_mode, &vlan_id); 2644 2645 /* Log the FCF record information if turned on */ 2646 lpfc_sli4_log_fcf_record_info(phba, new_fcf_record, vlan_id, 2647 next_fcf_index); 2648 2649 /* 2650 * If the fcf record does not match with connect list entries 2651 * read the next entry; otherwise, this is an eligible FCF 2652 * record for roundrobin FCF failover. 2653 */ 2654 if (!rc) { 2655 lpfc_sli4_fcf_pri_list_del(phba, 2656 bf_get(lpfc_fcf_record_fcf_index, 2657 new_fcf_record)); 2658 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP, 2659 "2781 FCF (x%x) failed connection " 2660 "list check: (x%x/x%x/%x)\n", 2661 bf_get(lpfc_fcf_record_fcf_index, 2662 new_fcf_record), 2663 bf_get(lpfc_fcf_record_fcf_avail, 2664 new_fcf_record), 2665 bf_get(lpfc_fcf_record_fcf_valid, 2666 new_fcf_record), 2667 bf_get(lpfc_fcf_record_fcf_sol, 2668 new_fcf_record)); 2669 if ((phba->fcf.fcf_flag & FCF_IN_USE) && 2670 lpfc_sli4_fcf_record_match(phba, &phba->fcf.current_rec, 2671 new_fcf_record, LPFC_FCOE_IGNORE_VID)) { 2672 if (bf_get(lpfc_fcf_record_fcf_index, new_fcf_record) != 2673 phba->fcf.current_rec.fcf_indx) { 2674 lpfc_printf_log(phba, KERN_ERR, 2675 LOG_TRACE_EVENT, 2676 "2862 FCF (x%x) matches property " 2677 "of in-use FCF (x%x)\n", 2678 bf_get(lpfc_fcf_record_fcf_index, 2679 new_fcf_record), 2680 phba->fcf.current_rec.fcf_indx); 2681 goto read_next_fcf; 2682 } 2683 /* 2684 * In case the current in-use FCF record becomes 2685 * invalid/unavailable during FCF discovery that 2686 * was not triggered by fast FCF failover process, 2687 * treat it as fast FCF failover. 2688 */ 2689 if (!(phba->fcf.fcf_flag & FCF_REDISC_PEND) && 2690 !(phba->fcf.fcf_flag & FCF_REDISC_FOV)) { 2691 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP, 2692 "2835 Invalid in-use FCF " 2693 "(x%x), enter FCF failover " 2694 "table scan.\n", 2695 phba->fcf.current_rec.fcf_indx); 2696 spin_lock_irq(&phba->hbalock); 2697 phba->fcf.fcf_flag |= FCF_REDISC_FOV; 2698 spin_unlock_irq(&phba->hbalock); 2699 lpfc_sli4_mbox_cmd_free(phba, mboxq); 2700 lpfc_sli4_fcf_scan_read_fcf_rec(phba, 2701 LPFC_FCOE_FCF_GET_FIRST); 2702 return; 2703 } 2704 } 2705 goto read_next_fcf; 2706 } else { 2707 fcf_index = bf_get(lpfc_fcf_record_fcf_index, new_fcf_record); 2708 rc = lpfc_sli4_fcf_pri_list_add(phba, fcf_index, 2709 new_fcf_record); 2710 if (rc) 2711 goto read_next_fcf; 2712 } 2713 2714 /* 2715 * If this is not the first FCF discovery of the HBA, use last 2716 * FCF record for the discovery. The condition that a rescan 2717 * matches the in-use FCF record: fabric name, switch name, mac 2718 * address, and vlan_id. 2719 */ 2720 spin_lock_irq(&phba->hbalock); 2721 if (phba->fcf.fcf_flag & FCF_IN_USE) { 2722 if (phba->cfg_fcf_failover_policy == LPFC_FCF_FOV && 2723 lpfc_sli4_fcf_record_match(phba, &phba->fcf.current_rec, 2724 new_fcf_record, vlan_id)) { 2725 if (bf_get(lpfc_fcf_record_fcf_index, new_fcf_record) == 2726 phba->fcf.current_rec.fcf_indx) { 2727 phba->fcf.fcf_flag |= FCF_AVAILABLE; 2728 if (phba->fcf.fcf_flag & FCF_REDISC_PEND) 2729 /* Stop FCF redisc wait timer */ 2730 __lpfc_sli4_stop_fcf_redisc_wait_timer( 2731 phba); 2732 else if (phba->fcf.fcf_flag & FCF_REDISC_FOV) 2733 /* Fast failover, mark completed */ 2734 phba->fcf.fcf_flag &= ~FCF_REDISC_FOV; 2735 spin_unlock_irq(&phba->hbalock); 2736 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2737 "2836 New FCF matches in-use " 2738 "FCF (x%x), port_state:x%x, " 2739 "fc_flag:x%lx\n", 2740 phba->fcf.current_rec.fcf_indx, 2741 phba->pport->port_state, 2742 phba->pport->fc_flag); 2743 goto out; 2744 } else 2745 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 2746 "2863 New FCF (x%x) matches " 2747 "property of in-use FCF (x%x)\n", 2748 bf_get(lpfc_fcf_record_fcf_index, 2749 new_fcf_record), 2750 phba->fcf.current_rec.fcf_indx); 2751 } 2752 /* 2753 * Read next FCF record from HBA searching for the matching 2754 * with in-use record only if not during the fast failover 2755 * period. In case of fast failover period, it shall try to 2756 * determine whether the FCF record just read should be the 2757 * next candidate. 2758 */ 2759 if (!(phba->fcf.fcf_flag & FCF_REDISC_FOV)) { 2760 spin_unlock_irq(&phba->hbalock); 2761 goto read_next_fcf; 2762 } 2763 } 2764 /* 2765 * Update on failover FCF record only if it's in FCF fast-failover 2766 * period; otherwise, update on current FCF record. 2767 */ 2768 if (phba->fcf.fcf_flag & FCF_REDISC_FOV) 2769 fcf_rec = &phba->fcf.failover_rec; 2770 else 2771 fcf_rec = &phba->fcf.current_rec; 2772 2773 if (phba->fcf.fcf_flag & FCF_AVAILABLE) { 2774 /* 2775 * If the driver FCF record does not have boot flag 2776 * set and new hba fcf record has boot flag set, use 2777 * the new hba fcf record. 2778 */ 2779 if (boot_flag && !(fcf_rec->flag & BOOT_ENABLE)) { 2780 /* Choose this FCF record */ 2781 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2782 "2837 Update current FCF record " 2783 "(x%x) with new FCF record (x%x)\n", 2784 fcf_rec->fcf_indx, 2785 bf_get(lpfc_fcf_record_fcf_index, 2786 new_fcf_record)); 2787 __lpfc_update_fcf_record(phba, fcf_rec, new_fcf_record, 2788 addr_mode, vlan_id, BOOT_ENABLE); 2789 spin_unlock_irq(&phba->hbalock); 2790 goto read_next_fcf; 2791 } 2792 /* 2793 * If the driver FCF record has boot flag set and the 2794 * new hba FCF record does not have boot flag, read 2795 * the next FCF record. 2796 */ 2797 if (!boot_flag && (fcf_rec->flag & BOOT_ENABLE)) { 2798 spin_unlock_irq(&phba->hbalock); 2799 goto read_next_fcf; 2800 } 2801 /* 2802 * If the new hba FCF record has lower priority value 2803 * than the driver FCF record, use the new record. 2804 */ 2805 if (new_fcf_record->fip_priority < fcf_rec->priority) { 2806 /* Choose the new FCF record with lower priority */ 2807 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2808 "2838 Update current FCF record " 2809 "(x%x) with new FCF record (x%x)\n", 2810 fcf_rec->fcf_indx, 2811 bf_get(lpfc_fcf_record_fcf_index, 2812 new_fcf_record)); 2813 __lpfc_update_fcf_record(phba, fcf_rec, new_fcf_record, 2814 addr_mode, vlan_id, 0); 2815 /* Reset running random FCF selection count */ 2816 phba->fcf.eligible_fcf_cnt = 1; 2817 } else if (new_fcf_record->fip_priority == fcf_rec->priority) { 2818 /* Update running random FCF selection count */ 2819 phba->fcf.eligible_fcf_cnt++; 2820 select_new_fcf = lpfc_sli4_new_fcf_random_select(phba, 2821 phba->fcf.eligible_fcf_cnt); 2822 if (select_new_fcf) { 2823 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2824 "2839 Update current FCF record " 2825 "(x%x) with new FCF record (x%x)\n", 2826 fcf_rec->fcf_indx, 2827 bf_get(lpfc_fcf_record_fcf_index, 2828 new_fcf_record)); 2829 /* Choose the new FCF by random selection */ 2830 __lpfc_update_fcf_record(phba, fcf_rec, 2831 new_fcf_record, 2832 addr_mode, vlan_id, 0); 2833 } 2834 } 2835 spin_unlock_irq(&phba->hbalock); 2836 goto read_next_fcf; 2837 } 2838 /* 2839 * This is the first suitable FCF record, choose this record for 2840 * initial best-fit FCF. 2841 */ 2842 if (fcf_rec) { 2843 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2844 "2840 Update initial FCF candidate " 2845 "with FCF (x%x)\n", 2846 bf_get(lpfc_fcf_record_fcf_index, 2847 new_fcf_record)); 2848 __lpfc_update_fcf_record(phba, fcf_rec, new_fcf_record, 2849 addr_mode, vlan_id, (boot_flag ? 2850 BOOT_ENABLE : 0)); 2851 phba->fcf.fcf_flag |= FCF_AVAILABLE; 2852 /* Setup initial running random FCF selection count */ 2853 phba->fcf.eligible_fcf_cnt = 1; 2854 } 2855 spin_unlock_irq(&phba->hbalock); 2856 goto read_next_fcf; 2857 2858 read_next_fcf: 2859 lpfc_sli4_mbox_cmd_free(phba, mboxq); 2860 if (next_fcf_index == LPFC_FCOE_FCF_NEXT_NONE || next_fcf_index == 0) { 2861 if (phba->fcf.fcf_flag & FCF_REDISC_FOV) { 2862 /* 2863 * Case of FCF fast failover scan 2864 */ 2865 2866 /* 2867 * It has not found any suitable FCF record, cancel 2868 * FCF scan inprogress, and do nothing 2869 */ 2870 if (!(phba->fcf.failover_rec.flag & RECORD_VALID)) { 2871 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP, 2872 "2782 No suitable FCF found: " 2873 "(x%x/x%x)\n", 2874 phba->fcoe_eventtag_at_fcf_scan, 2875 bf_get(lpfc_fcf_record_fcf_index, 2876 new_fcf_record)); 2877 spin_lock_irq(&phba->hbalock); 2878 if (phba->hba_flag & HBA_DEVLOSS_TMO) { 2879 phba->hba_flag &= ~FCF_TS_INPROG; 2880 spin_unlock_irq(&phba->hbalock); 2881 /* Unregister in-use FCF and rescan */ 2882 lpfc_printf_log(phba, KERN_INFO, 2883 LOG_FIP, 2884 "2864 On devloss tmo " 2885 "unreg in-use FCF and " 2886 "rescan FCF table\n"); 2887 lpfc_unregister_fcf_rescan(phba); 2888 return; 2889 } 2890 /* 2891 * Let next new FCF event trigger fast failover 2892 */ 2893 phba->hba_flag &= ~FCF_TS_INPROG; 2894 spin_unlock_irq(&phba->hbalock); 2895 return; 2896 } 2897 /* 2898 * It has found a suitable FCF record that is not 2899 * the same as in-use FCF record, unregister the 2900 * in-use FCF record, replace the in-use FCF record 2901 * with the new FCF record, mark FCF fast failover 2902 * completed, and then start register the new FCF 2903 * record. 2904 */ 2905 2906 /* Unregister the current in-use FCF record */ 2907 lpfc_unregister_fcf(phba); 2908 2909 /* Replace in-use record with the new record */ 2910 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2911 "2842 Replace in-use FCF (x%x) " 2912 "with failover FCF (x%x)\n", 2913 phba->fcf.current_rec.fcf_indx, 2914 phba->fcf.failover_rec.fcf_indx); 2915 memcpy(&phba->fcf.current_rec, 2916 &phba->fcf.failover_rec, 2917 sizeof(struct lpfc_fcf_rec)); 2918 /* 2919 * Mark the fast FCF failover rediscovery completed 2920 * and the start of the first round of the roundrobin 2921 * FCF failover. 2922 */ 2923 spin_lock_irq(&phba->hbalock); 2924 phba->fcf.fcf_flag &= ~FCF_REDISC_FOV; 2925 spin_unlock_irq(&phba->hbalock); 2926 /* Register to the new FCF record */ 2927 lpfc_register_fcf(phba); 2928 } else { 2929 /* 2930 * In case of transaction period to fast FCF failover, 2931 * do nothing when search to the end of the FCF table. 2932 */ 2933 if ((phba->fcf.fcf_flag & FCF_REDISC_EVT) || 2934 (phba->fcf.fcf_flag & FCF_REDISC_PEND)) 2935 return; 2936 2937 if (phba->cfg_fcf_failover_policy == LPFC_FCF_FOV && 2938 phba->fcf.fcf_flag & FCF_IN_USE) { 2939 /* 2940 * In case the current in-use FCF record no 2941 * longer existed during FCF discovery that 2942 * was not triggered by fast FCF failover 2943 * process, treat it as fast FCF failover. 2944 */ 2945 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2946 "2841 In-use FCF record (x%x) " 2947 "not reported, entering fast " 2948 "FCF failover mode scanning.\n", 2949 phba->fcf.current_rec.fcf_indx); 2950 spin_lock_irq(&phba->hbalock); 2951 phba->fcf.fcf_flag |= FCF_REDISC_FOV; 2952 spin_unlock_irq(&phba->hbalock); 2953 lpfc_sli4_fcf_scan_read_fcf_rec(phba, 2954 LPFC_FCOE_FCF_GET_FIRST); 2955 return; 2956 } 2957 /* Register to the new FCF record */ 2958 lpfc_register_fcf(phba); 2959 } 2960 } else 2961 lpfc_sli4_fcf_scan_read_fcf_rec(phba, next_fcf_index); 2962 return; 2963 2964 out: 2965 lpfc_sli4_mbox_cmd_free(phba, mboxq); 2966 lpfc_register_fcf(phba); 2967 2968 return; 2969 } 2970 2971 /** 2972 * lpfc_mbx_cmpl_fcf_rr_read_fcf_rec - fcf roundrobin read_fcf mbox cmpl hdler 2973 * @phba: pointer to lpfc hba data structure. 2974 * @mboxq: pointer to mailbox object. 2975 * 2976 * This is the callback function for FLOGI failure roundrobin FCF failover 2977 * read FCF record mailbox command from the eligible FCF record bmask for 2978 * performing the failover. If the FCF read back is not valid/available, it 2979 * fails through to retrying FLOGI to the currently registered FCF again. 2980 * Otherwise, if the FCF read back is valid and available, it will set the 2981 * newly read FCF record to the failover FCF record, unregister currently 2982 * registered FCF record, copy the failover FCF record to the current 2983 * FCF record, and then register the current FCF record before proceeding 2984 * to trying FLOGI on the new failover FCF. 2985 */ 2986 void 2987 lpfc_mbx_cmpl_fcf_rr_read_fcf_rec(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq) 2988 { 2989 struct fcf_record *new_fcf_record; 2990 uint32_t boot_flag, addr_mode; 2991 uint16_t next_fcf_index, fcf_index; 2992 uint16_t current_fcf_index; 2993 uint16_t vlan_id = LPFC_FCOE_NULL_VID; 2994 int rc; 2995 2996 /* If link state is not up, stop the roundrobin failover process */ 2997 if (phba->link_state < LPFC_LINK_UP) { 2998 spin_lock_irq(&phba->hbalock); 2999 phba->fcf.fcf_flag &= ~FCF_DISCOVERY; 3000 phba->hba_flag &= ~FCF_RR_INPROG; 3001 spin_unlock_irq(&phba->hbalock); 3002 goto out; 3003 } 3004 3005 /* Parse the FCF record from the non-embedded mailbox command */ 3006 new_fcf_record = lpfc_sli4_fcf_rec_mbox_parse(phba, mboxq, 3007 &next_fcf_index); 3008 if (!new_fcf_record) { 3009 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP, 3010 "2766 Mailbox command READ_FCF_RECORD " 3011 "failed to retrieve a FCF record. " 3012 "hba_flg x%x fcf_flg x%x\n", phba->hba_flag, 3013 phba->fcf.fcf_flag); 3014 lpfc_unregister_fcf_rescan(phba); 3015 goto out; 3016 } 3017 3018 /* Get the needed parameters from FCF record */ 3019 rc = lpfc_match_fcf_conn_list(phba, new_fcf_record, &boot_flag, 3020 &addr_mode, &vlan_id); 3021 3022 /* Log the FCF record information if turned on */ 3023 lpfc_sli4_log_fcf_record_info(phba, new_fcf_record, vlan_id, 3024 next_fcf_index); 3025 3026 fcf_index = bf_get(lpfc_fcf_record_fcf_index, new_fcf_record); 3027 if (!rc) { 3028 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 3029 "2848 Remove ineligible FCF (x%x) from " 3030 "from roundrobin bmask\n", fcf_index); 3031 /* Clear roundrobin bmask bit for ineligible FCF */ 3032 lpfc_sli4_fcf_rr_index_clear(phba, fcf_index); 3033 /* Perform next round of roundrobin FCF failover */ 3034 fcf_index = lpfc_sli4_fcf_rr_next_index_get(phba); 3035 rc = lpfc_sli4_fcf_rr_next_proc(phba->pport, fcf_index); 3036 if (rc) 3037 goto out; 3038 goto error_out; 3039 } 3040 3041 if (fcf_index == phba->fcf.current_rec.fcf_indx) { 3042 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 3043 "2760 Perform FLOGI roundrobin FCF failover: " 3044 "FCF (x%x) back to FCF (x%x)\n", 3045 phba->fcf.current_rec.fcf_indx, fcf_index); 3046 /* Wait 500 ms before retrying FLOGI to current FCF */ 3047 msleep(500); 3048 lpfc_issue_init_vfi(phba->pport); 3049 goto out; 3050 } 3051 3052 /* Upload new FCF record to the failover FCF record */ 3053 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 3054 "2834 Update current FCF (x%x) with new FCF (x%x)\n", 3055 phba->fcf.failover_rec.fcf_indx, fcf_index); 3056 spin_lock_irq(&phba->hbalock); 3057 __lpfc_update_fcf_record(phba, &phba->fcf.failover_rec, 3058 new_fcf_record, addr_mode, vlan_id, 3059 (boot_flag ? BOOT_ENABLE : 0)); 3060 spin_unlock_irq(&phba->hbalock); 3061 3062 current_fcf_index = phba->fcf.current_rec.fcf_indx; 3063 3064 /* Unregister the current in-use FCF record */ 3065 lpfc_unregister_fcf(phba); 3066 3067 /* Replace in-use record with the new record */ 3068 memcpy(&phba->fcf.current_rec, &phba->fcf.failover_rec, 3069 sizeof(struct lpfc_fcf_rec)); 3070 3071 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 3072 "2783 Perform FLOGI roundrobin FCF failover: FCF " 3073 "(x%x) to FCF (x%x)\n", current_fcf_index, fcf_index); 3074 3075 error_out: 3076 lpfc_register_fcf(phba); 3077 out: 3078 lpfc_sli4_mbox_cmd_free(phba, mboxq); 3079 } 3080 3081 /** 3082 * lpfc_mbx_cmpl_read_fcf_rec - read fcf completion handler. 3083 * @phba: pointer to lpfc hba data structure. 3084 * @mboxq: pointer to mailbox object. 3085 * 3086 * This is the callback function of read FCF record mailbox command for 3087 * updating the eligible FCF bmask for FLOGI failure roundrobin FCF 3088 * failover when a new FCF event happened. If the FCF read back is 3089 * valid/available and it passes the connection list check, it updates 3090 * the bmask for the eligible FCF record for roundrobin failover. 3091 */ 3092 void 3093 lpfc_mbx_cmpl_read_fcf_rec(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq) 3094 { 3095 struct fcf_record *new_fcf_record; 3096 uint32_t boot_flag, addr_mode; 3097 uint16_t fcf_index, next_fcf_index; 3098 uint16_t vlan_id = LPFC_FCOE_NULL_VID; 3099 int rc; 3100 3101 /* If link state is not up, no need to proceed */ 3102 if (phba->link_state < LPFC_LINK_UP) 3103 goto out; 3104 3105 /* If FCF discovery period is over, no need to proceed */ 3106 if (!(phba->fcf.fcf_flag & FCF_DISCOVERY)) 3107 goto out; 3108 3109 /* Parse the FCF record from the non-embedded mailbox command */ 3110 new_fcf_record = lpfc_sli4_fcf_rec_mbox_parse(phba, mboxq, 3111 &next_fcf_index); 3112 if (!new_fcf_record) { 3113 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 3114 "2767 Mailbox command READ_FCF_RECORD " 3115 "failed to retrieve a FCF record.\n"); 3116 goto out; 3117 } 3118 3119 /* Check the connection list for eligibility */ 3120 rc = lpfc_match_fcf_conn_list(phba, new_fcf_record, &boot_flag, 3121 &addr_mode, &vlan_id); 3122 3123 /* Log the FCF record information if turned on */ 3124 lpfc_sli4_log_fcf_record_info(phba, new_fcf_record, vlan_id, 3125 next_fcf_index); 3126 3127 if (!rc) 3128 goto out; 3129 3130 /* Update the eligible FCF record index bmask */ 3131 fcf_index = bf_get(lpfc_fcf_record_fcf_index, new_fcf_record); 3132 3133 rc = lpfc_sli4_fcf_pri_list_add(phba, fcf_index, new_fcf_record); 3134 3135 out: 3136 lpfc_sli4_mbox_cmd_free(phba, mboxq); 3137 } 3138 3139 /** 3140 * lpfc_init_vfi_cmpl - Completion handler for init_vfi mbox command. 3141 * @phba: pointer to lpfc hba data structure. 3142 * @mboxq: pointer to mailbox data structure. 3143 * 3144 * This function handles completion of init vfi mailbox command. 3145 */ 3146 static void 3147 lpfc_init_vfi_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq) 3148 { 3149 struct lpfc_vport *vport = mboxq->vport; 3150 3151 /* 3152 * VFI not supported on interface type 0, just do the flogi 3153 * Also continue if the VFI is in use - just use the same one. 3154 */ 3155 if (mboxq->u.mb.mbxStatus && 3156 (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) != 3157 LPFC_SLI_INTF_IF_TYPE_0) && 3158 mboxq->u.mb.mbxStatus != MBX_VFI_IN_USE) { 3159 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 3160 "2891 Init VFI mailbox failed 0x%x\n", 3161 mboxq->u.mb.mbxStatus); 3162 mempool_free(mboxq, phba->mbox_mem_pool); 3163 lpfc_vport_set_state(vport, FC_VPORT_FAILED); 3164 return; 3165 } 3166 3167 lpfc_initial_flogi(vport); 3168 mempool_free(mboxq, phba->mbox_mem_pool); 3169 return; 3170 } 3171 3172 /** 3173 * lpfc_issue_init_vfi - Issue init_vfi mailbox command. 3174 * @vport: pointer to lpfc_vport data structure. 3175 * 3176 * This function issue a init_vfi mailbox command to initialize the VFI and 3177 * VPI for the physical port. 3178 */ 3179 void 3180 lpfc_issue_init_vfi(struct lpfc_vport *vport) 3181 { 3182 LPFC_MBOXQ_t *mboxq; 3183 int rc; 3184 struct lpfc_hba *phba = vport->phba; 3185 3186 mboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 3187 if (!mboxq) { 3188 lpfc_printf_vlog(vport, KERN_ERR, 3189 LOG_TRACE_EVENT, "2892 Failed to allocate " 3190 "init_vfi mailbox\n"); 3191 return; 3192 } 3193 lpfc_init_vfi(mboxq, vport); 3194 mboxq->mbox_cmpl = lpfc_init_vfi_cmpl; 3195 rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_NOWAIT); 3196 if (rc == MBX_NOT_FINISHED) { 3197 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 3198 "2893 Failed to issue init_vfi mailbox\n"); 3199 mempool_free(mboxq, vport->phba->mbox_mem_pool); 3200 } 3201 } 3202 3203 /** 3204 * lpfc_init_vpi_cmpl - Completion handler for init_vpi mbox command. 3205 * @phba: pointer to lpfc hba data structure. 3206 * @mboxq: pointer to mailbox data structure. 3207 * 3208 * This function handles completion of init vpi mailbox command. 3209 */ 3210 void 3211 lpfc_init_vpi_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq) 3212 { 3213 struct lpfc_vport *vport = mboxq->vport; 3214 struct lpfc_nodelist *ndlp; 3215 3216 if (mboxq->u.mb.mbxStatus) { 3217 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 3218 "2609 Init VPI mailbox failed 0x%x\n", 3219 mboxq->u.mb.mbxStatus); 3220 mempool_free(mboxq, phba->mbox_mem_pool); 3221 lpfc_vport_set_state(vport, FC_VPORT_FAILED); 3222 return; 3223 } 3224 clear_bit(FC_VPORT_NEEDS_INIT_VPI, &vport->fc_flag); 3225 3226 /* If this port is physical port or FDISC is done, do reg_vpi */ 3227 if ((phba->pport == vport) || (vport->port_state == LPFC_FDISC)) { 3228 ndlp = lpfc_findnode_did(vport, Fabric_DID); 3229 if (!ndlp) 3230 lpfc_printf_vlog(vport, KERN_ERR, 3231 LOG_TRACE_EVENT, 3232 "2731 Cannot find fabric " 3233 "controller node\n"); 3234 else 3235 lpfc_register_new_vport(phba, vport, ndlp); 3236 mempool_free(mboxq, phba->mbox_mem_pool); 3237 return; 3238 } 3239 3240 if (phba->link_flag & LS_NPIV_FAB_SUPPORTED) 3241 lpfc_initial_fdisc(vport); 3242 else { 3243 lpfc_vport_set_state(vport, FC_VPORT_NO_FABRIC_SUPP); 3244 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 3245 "2606 No NPIV Fabric support\n"); 3246 } 3247 mempool_free(mboxq, phba->mbox_mem_pool); 3248 return; 3249 } 3250 3251 /** 3252 * lpfc_issue_init_vpi - Issue init_vpi mailbox command. 3253 * @vport: pointer to lpfc_vport data structure. 3254 * 3255 * This function issue a init_vpi mailbox command to initialize 3256 * VPI for the vport. 3257 */ 3258 void 3259 lpfc_issue_init_vpi(struct lpfc_vport *vport) 3260 { 3261 LPFC_MBOXQ_t *mboxq; 3262 int rc, vpi; 3263 3264 if ((vport->port_type != LPFC_PHYSICAL_PORT) && (!vport->vpi)) { 3265 vpi = lpfc_alloc_vpi(vport->phba); 3266 if (!vpi) { 3267 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 3268 "3303 Failed to obtain vport vpi\n"); 3269 lpfc_vport_set_state(vport, FC_VPORT_FAILED); 3270 return; 3271 } 3272 vport->vpi = vpi; 3273 } 3274 3275 mboxq = mempool_alloc(vport->phba->mbox_mem_pool, GFP_KERNEL); 3276 if (!mboxq) { 3277 lpfc_printf_vlog(vport, KERN_ERR, 3278 LOG_TRACE_EVENT, "2607 Failed to allocate " 3279 "init_vpi mailbox\n"); 3280 return; 3281 } 3282 lpfc_init_vpi(vport->phba, mboxq, vport->vpi); 3283 mboxq->vport = vport; 3284 mboxq->mbox_cmpl = lpfc_init_vpi_cmpl; 3285 rc = lpfc_sli_issue_mbox(vport->phba, mboxq, MBX_NOWAIT); 3286 if (rc == MBX_NOT_FINISHED) { 3287 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 3288 "2608 Failed to issue init_vpi mailbox\n"); 3289 mempool_free(mboxq, vport->phba->mbox_mem_pool); 3290 } 3291 } 3292 3293 /** 3294 * lpfc_start_fdiscs - send fdiscs for each vports on this port. 3295 * @phba: pointer to lpfc hba data structure. 3296 * 3297 * This function loops through the list of vports on the @phba and issues an 3298 * FDISC if possible. 3299 */ 3300 void 3301 lpfc_start_fdiscs(struct lpfc_hba *phba) 3302 { 3303 struct lpfc_vport **vports; 3304 int i; 3305 3306 vports = lpfc_create_vport_work_array(phba); 3307 if (vports != NULL) { 3308 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) { 3309 if (vports[i]->port_type == LPFC_PHYSICAL_PORT) 3310 continue; 3311 /* There are no vpi for this vport */ 3312 if (vports[i]->vpi > phba->max_vpi) { 3313 lpfc_vport_set_state(vports[i], 3314 FC_VPORT_FAILED); 3315 continue; 3316 } 3317 if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) { 3318 lpfc_vport_set_state(vports[i], 3319 FC_VPORT_LINKDOWN); 3320 continue; 3321 } 3322 if (test_bit(FC_VPORT_NEEDS_INIT_VPI, 3323 &vports[i]->fc_flag)) { 3324 lpfc_issue_init_vpi(vports[i]); 3325 continue; 3326 } 3327 if (phba->link_flag & LS_NPIV_FAB_SUPPORTED) 3328 lpfc_initial_fdisc(vports[i]); 3329 else { 3330 lpfc_vport_set_state(vports[i], 3331 FC_VPORT_NO_FABRIC_SUPP); 3332 lpfc_printf_vlog(vports[i], KERN_ERR, 3333 LOG_TRACE_EVENT, 3334 "0259 No NPIV " 3335 "Fabric support\n"); 3336 } 3337 } 3338 } 3339 lpfc_destroy_vport_work_array(phba, vports); 3340 } 3341 3342 void 3343 lpfc_mbx_cmpl_reg_vfi(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq) 3344 { 3345 struct lpfc_vport *vport = mboxq->vport; 3346 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 3347 3348 /* 3349 * VFI not supported for interface type 0, so ignore any mailbox 3350 * error (except VFI in use) and continue with the discovery. 3351 */ 3352 if (mboxq->u.mb.mbxStatus && 3353 (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) != 3354 LPFC_SLI_INTF_IF_TYPE_0) && 3355 mboxq->u.mb.mbxStatus != MBX_VFI_IN_USE) { 3356 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 3357 "2018 REG_VFI mbxStatus error x%x " 3358 "HBA state x%x\n", 3359 mboxq->u.mb.mbxStatus, vport->port_state); 3360 if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) { 3361 /* FLOGI failed, use loop map to make discovery list */ 3362 lpfc_disc_list_loopmap(vport); 3363 /* Start discovery */ 3364 lpfc_disc_start(vport); 3365 goto out_free_mem; 3366 } 3367 lpfc_vport_set_state(vport, FC_VPORT_FAILED); 3368 goto out_free_mem; 3369 } 3370 3371 /* If the VFI is already registered, there is nothing else to do 3372 * Unless this was a VFI update and we are in PT2PT mode, then 3373 * we should drop through to set the port state to ready. 3374 */ 3375 if (test_bit(FC_VFI_REGISTERED, &vport->fc_flag)) 3376 if (!(phba->sli_rev == LPFC_SLI_REV4 && 3377 test_bit(FC_PT2PT, &vport->fc_flag))) 3378 goto out_free_mem; 3379 3380 /* The VPI is implicitly registered when the VFI is registered */ 3381 set_bit(FC_VFI_REGISTERED, &vport->fc_flag); 3382 clear_bit(FC_VPORT_NEEDS_REG_VPI, &vport->fc_flag); 3383 clear_bit(FC_VPORT_NEEDS_INIT_VPI, &vport->fc_flag); 3384 spin_lock_irq(shost->host_lock); 3385 vport->vpi_state |= LPFC_VPI_REGISTERED; 3386 spin_unlock_irq(shost->host_lock); 3387 3388 /* In case SLI4 FC loopback test, we are ready */ 3389 if ((phba->sli_rev == LPFC_SLI_REV4) && 3390 (phba->link_flag & LS_LOOPBACK_MODE)) { 3391 phba->link_state = LPFC_HBA_READY; 3392 goto out_free_mem; 3393 } 3394 3395 lpfc_printf_vlog(vport, KERN_INFO, LOG_SLI, 3396 "3313 cmpl reg vfi port_state:%x fc_flag:%lx " 3397 "myDid:%x alpacnt:%d LinkState:%x topology:%x\n", 3398 vport->port_state, vport->fc_flag, vport->fc_myDID, 3399 vport->phba->alpa_map[0], 3400 phba->link_state, phba->fc_topology); 3401 3402 if (vport->port_state == LPFC_FABRIC_CFG_LINK) { 3403 /* 3404 * For private loop or for NPort pt2pt, 3405 * just start discovery and we are done. 3406 */ 3407 if (test_bit(FC_PT2PT, &vport->fc_flag) || 3408 (phba->fc_topology == LPFC_TOPOLOGY_LOOP && 3409 !test_bit(FC_PUBLIC_LOOP, &vport->fc_flag))) { 3410 3411 /* Use loop map to make discovery list */ 3412 lpfc_disc_list_loopmap(vport); 3413 /* Start discovery */ 3414 if (test_bit(FC_PT2PT, &vport->fc_flag)) 3415 vport->port_state = LPFC_VPORT_READY; 3416 else 3417 lpfc_disc_start(vport); 3418 } else { 3419 lpfc_start_fdiscs(phba); 3420 lpfc_do_scr_ns_plogi(phba, vport); 3421 } 3422 } 3423 3424 out_free_mem: 3425 lpfc_mbox_rsrc_cleanup(phba, mboxq, MBOX_THD_UNLOCKED); 3426 } 3427 3428 static void 3429 lpfc_mbx_cmpl_read_sparam(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 3430 { 3431 MAILBOX_t *mb = &pmb->u.mb; 3432 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *)pmb->ctx_buf; 3433 struct lpfc_vport *vport = pmb->vport; 3434 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 3435 struct serv_parm *sp = &vport->fc_sparam; 3436 uint32_t ed_tov; 3437 3438 /* Check for error */ 3439 if (mb->mbxStatus) { 3440 /* READ_SPARAM mbox error <mbxStatus> state <hba_state> */ 3441 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 3442 "0319 READ_SPARAM mbxStatus error x%x " 3443 "hba state x%x>\n", 3444 mb->mbxStatus, vport->port_state); 3445 lpfc_linkdown(phba); 3446 goto out; 3447 } 3448 3449 memcpy((uint8_t *) &vport->fc_sparam, (uint8_t *) mp->virt, 3450 sizeof (struct serv_parm)); 3451 3452 ed_tov = be32_to_cpu(sp->cmn.e_d_tov); 3453 if (sp->cmn.edtovResolution) /* E_D_TOV ticks are in nanoseconds */ 3454 ed_tov = (ed_tov + 999999) / 1000000; 3455 3456 phba->fc_edtov = ed_tov; 3457 phba->fc_ratov = (2 * ed_tov) / 1000; 3458 if (phba->fc_ratov < FF_DEF_RATOV) { 3459 /* RA_TOV should be atleast 10sec for initial flogi */ 3460 phba->fc_ratov = FF_DEF_RATOV; 3461 } 3462 3463 lpfc_update_vport_wwn(vport); 3464 fc_host_port_name(shost) = wwn_to_u64(vport->fc_portname.u.wwn); 3465 if (vport->port_type == LPFC_PHYSICAL_PORT) { 3466 memcpy(&phba->wwnn, &vport->fc_nodename, sizeof(phba->wwnn)); 3467 memcpy(&phba->wwpn, &vport->fc_portname, sizeof(phba->wwnn)); 3468 } 3469 3470 lpfc_mbox_rsrc_cleanup(phba, pmb, MBOX_THD_UNLOCKED); 3471 3472 /* Check if sending the FLOGI is being deferred to after we get 3473 * up to date CSPs from MBX_READ_SPARAM. 3474 */ 3475 if (phba->hba_flag & HBA_DEFER_FLOGI) { 3476 lpfc_initial_flogi(vport); 3477 phba->hba_flag &= ~HBA_DEFER_FLOGI; 3478 } 3479 return; 3480 3481 out: 3482 lpfc_mbox_rsrc_cleanup(phba, pmb, MBOX_THD_UNLOCKED); 3483 lpfc_issue_clear_la(phba, vport); 3484 } 3485 3486 static void 3487 lpfc_mbx_process_link_up(struct lpfc_hba *phba, struct lpfc_mbx_read_top *la) 3488 { 3489 struct lpfc_vport *vport = phba->pport; 3490 LPFC_MBOXQ_t *sparam_mbox, *cfglink_mbox = NULL; 3491 int i; 3492 int rc; 3493 struct fcf_record *fcf_record; 3494 unsigned long iflags; 3495 3496 spin_lock_irqsave(&phba->hbalock, iflags); 3497 phba->fc_linkspeed = bf_get(lpfc_mbx_read_top_link_spd, la); 3498 3499 if (!(phba->hba_flag & HBA_FCOE_MODE)) { 3500 switch (bf_get(lpfc_mbx_read_top_link_spd, la)) { 3501 case LPFC_LINK_SPEED_1GHZ: 3502 case LPFC_LINK_SPEED_2GHZ: 3503 case LPFC_LINK_SPEED_4GHZ: 3504 case LPFC_LINK_SPEED_8GHZ: 3505 case LPFC_LINK_SPEED_10GHZ: 3506 case LPFC_LINK_SPEED_16GHZ: 3507 case LPFC_LINK_SPEED_32GHZ: 3508 case LPFC_LINK_SPEED_64GHZ: 3509 case LPFC_LINK_SPEED_128GHZ: 3510 case LPFC_LINK_SPEED_256GHZ: 3511 break; 3512 default: 3513 phba->fc_linkspeed = LPFC_LINK_SPEED_UNKNOWN; 3514 break; 3515 } 3516 } 3517 3518 if (phba->fc_topology && 3519 phba->fc_topology != bf_get(lpfc_mbx_read_top_topology, la)) { 3520 lpfc_printf_log(phba, KERN_WARNING, LOG_SLI, 3521 "3314 Toplogy changed was 0x%x is 0x%x\n", 3522 phba->fc_topology, 3523 bf_get(lpfc_mbx_read_top_topology, la)); 3524 phba->fc_topology_changed = 1; 3525 } 3526 3527 phba->fc_topology = bf_get(lpfc_mbx_read_top_topology, la); 3528 phba->link_flag &= ~(LS_NPIV_FAB_SUPPORTED | LS_CT_VEN_RPA); 3529 3530 if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) { 3531 phba->sli3_options &= ~LPFC_SLI3_NPIV_ENABLED; 3532 3533 /* if npiv is enabled and this adapter supports npiv log 3534 * a message that npiv is not supported in this topology 3535 */ 3536 if (phba->cfg_enable_npiv && phba->max_vpi) 3537 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT, 3538 "1309 Link Up Event npiv not supported in loop " 3539 "topology\n"); 3540 /* Get Loop Map information */ 3541 if (bf_get(lpfc_mbx_read_top_il, la)) 3542 set_bit(FC_LBIT, &vport->fc_flag); 3543 3544 vport->fc_myDID = bf_get(lpfc_mbx_read_top_alpa_granted, la); 3545 i = la->lilpBde64.tus.f.bdeSize; 3546 3547 if (i == 0) { 3548 phba->alpa_map[0] = 0; 3549 } else { 3550 if (vport->cfg_log_verbose & LOG_LINK_EVENT) { 3551 int numalpa, j, k; 3552 union { 3553 uint8_t pamap[16]; 3554 struct { 3555 uint32_t wd1; 3556 uint32_t wd2; 3557 uint32_t wd3; 3558 uint32_t wd4; 3559 } pa; 3560 } un; 3561 numalpa = phba->alpa_map[0]; 3562 j = 0; 3563 while (j < numalpa) { 3564 memset(un.pamap, 0, 16); 3565 for (k = 1; j < numalpa; k++) { 3566 un.pamap[k - 1] = 3567 phba->alpa_map[j + 1]; 3568 j++; 3569 if (k == 16) 3570 break; 3571 } 3572 /* Link Up Event ALPA map */ 3573 lpfc_printf_log(phba, 3574 KERN_WARNING, 3575 LOG_LINK_EVENT, 3576 "1304 Link Up Event " 3577 "ALPA map Data: x%x " 3578 "x%x x%x x%x\n", 3579 un.pa.wd1, un.pa.wd2, 3580 un.pa.wd3, un.pa.wd4); 3581 } 3582 } 3583 } 3584 } else { 3585 if (!(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)) { 3586 if (phba->max_vpi && phba->cfg_enable_npiv && 3587 (phba->sli_rev >= LPFC_SLI_REV3)) 3588 phba->sli3_options |= LPFC_SLI3_NPIV_ENABLED; 3589 } 3590 vport->fc_myDID = phba->fc_pref_DID; 3591 set_bit(FC_LBIT, &vport->fc_flag); 3592 } 3593 spin_unlock_irqrestore(&phba->hbalock, iflags); 3594 3595 lpfc_linkup(phba); 3596 sparam_mbox = NULL; 3597 3598 sparam_mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 3599 if (!sparam_mbox) 3600 goto out; 3601 3602 rc = lpfc_read_sparam(phba, sparam_mbox, 0); 3603 if (rc) { 3604 mempool_free(sparam_mbox, phba->mbox_mem_pool); 3605 goto out; 3606 } 3607 sparam_mbox->vport = vport; 3608 sparam_mbox->mbox_cmpl = lpfc_mbx_cmpl_read_sparam; 3609 rc = lpfc_sli_issue_mbox(phba, sparam_mbox, MBX_NOWAIT); 3610 if (rc == MBX_NOT_FINISHED) { 3611 lpfc_mbox_rsrc_cleanup(phba, sparam_mbox, MBOX_THD_UNLOCKED); 3612 goto out; 3613 } 3614 3615 if (!(phba->hba_flag & HBA_FCOE_MODE)) { 3616 cfglink_mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 3617 if (!cfglink_mbox) 3618 goto out; 3619 vport->port_state = LPFC_LOCAL_CFG_LINK; 3620 lpfc_config_link(phba, cfglink_mbox); 3621 cfglink_mbox->vport = vport; 3622 cfglink_mbox->mbox_cmpl = lpfc_mbx_cmpl_local_config_link; 3623 rc = lpfc_sli_issue_mbox(phba, cfglink_mbox, MBX_NOWAIT); 3624 if (rc == MBX_NOT_FINISHED) { 3625 mempool_free(cfglink_mbox, phba->mbox_mem_pool); 3626 goto out; 3627 } 3628 } else { 3629 vport->port_state = LPFC_VPORT_UNKNOWN; 3630 /* 3631 * Add the driver's default FCF record at FCF index 0 now. This 3632 * is phase 1 implementation that support FCF index 0 and driver 3633 * defaults. 3634 */ 3635 if (!(phba->hba_flag & HBA_FIP_SUPPORT)) { 3636 fcf_record = kzalloc(sizeof(struct fcf_record), 3637 GFP_KERNEL); 3638 if (unlikely(!fcf_record)) { 3639 lpfc_printf_log(phba, KERN_ERR, 3640 LOG_TRACE_EVENT, 3641 "2554 Could not allocate memory for " 3642 "fcf record\n"); 3643 rc = -ENODEV; 3644 goto out; 3645 } 3646 3647 lpfc_sli4_build_dflt_fcf_record(phba, fcf_record, 3648 LPFC_FCOE_FCF_DEF_INDEX); 3649 rc = lpfc_sli4_add_fcf_record(phba, fcf_record); 3650 if (unlikely(rc)) { 3651 lpfc_printf_log(phba, KERN_ERR, 3652 LOG_TRACE_EVENT, 3653 "2013 Could not manually add FCF " 3654 "record 0, status %d\n", rc); 3655 rc = -ENODEV; 3656 kfree(fcf_record); 3657 goto out; 3658 } 3659 kfree(fcf_record); 3660 } 3661 /* 3662 * The driver is expected to do FIP/FCF. Call the port 3663 * and get the FCF Table. 3664 */ 3665 spin_lock_irqsave(&phba->hbalock, iflags); 3666 if (phba->hba_flag & FCF_TS_INPROG) { 3667 spin_unlock_irqrestore(&phba->hbalock, iflags); 3668 return; 3669 } 3670 /* This is the initial FCF discovery scan */ 3671 phba->fcf.fcf_flag |= FCF_INIT_DISC; 3672 spin_unlock_irqrestore(&phba->hbalock, iflags); 3673 lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY, 3674 "2778 Start FCF table scan at linkup\n"); 3675 rc = lpfc_sli4_fcf_scan_read_fcf_rec(phba, 3676 LPFC_FCOE_FCF_GET_FIRST); 3677 if (rc) { 3678 spin_lock_irqsave(&phba->hbalock, iflags); 3679 phba->fcf.fcf_flag &= ~FCF_INIT_DISC; 3680 spin_unlock_irqrestore(&phba->hbalock, iflags); 3681 goto out; 3682 } 3683 /* Reset FCF roundrobin bmask for new discovery */ 3684 lpfc_sli4_clear_fcf_rr_bmask(phba); 3685 } 3686 3687 /* Prepare for LINK up registrations */ 3688 memset(phba->os_host_name, 0, sizeof(phba->os_host_name)); 3689 scnprintf(phba->os_host_name, sizeof(phba->os_host_name), "%s", 3690 init_utsname()->nodename); 3691 return; 3692 out: 3693 lpfc_vport_set_state(vport, FC_VPORT_FAILED); 3694 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 3695 "0263 Discovery Mailbox error: state: 0x%x : x%px x%px\n", 3696 vport->port_state, sparam_mbox, cfglink_mbox); 3697 lpfc_issue_clear_la(phba, vport); 3698 return; 3699 } 3700 3701 static void 3702 lpfc_enable_la(struct lpfc_hba *phba) 3703 { 3704 uint32_t control; 3705 struct lpfc_sli *psli = &phba->sli; 3706 spin_lock_irq(&phba->hbalock); 3707 psli->sli_flag |= LPFC_PROCESS_LA; 3708 if (phba->sli_rev <= LPFC_SLI_REV3) { 3709 control = readl(phba->HCregaddr); 3710 control |= HC_LAINT_ENA; 3711 writel(control, phba->HCregaddr); 3712 readl(phba->HCregaddr); /* flush */ 3713 } 3714 spin_unlock_irq(&phba->hbalock); 3715 } 3716 3717 static void 3718 lpfc_mbx_issue_link_down(struct lpfc_hba *phba) 3719 { 3720 lpfc_linkdown(phba); 3721 lpfc_enable_la(phba); 3722 lpfc_unregister_unused_fcf(phba); 3723 /* turn on Link Attention interrupts - no CLEAR_LA needed */ 3724 } 3725 3726 3727 /* 3728 * This routine handles processing a READ_TOPOLOGY mailbox 3729 * command upon completion. It is setup in the LPFC_MBOXQ 3730 * as the completion routine when the command is 3731 * handed off to the SLI layer. SLI4 only. 3732 */ 3733 void 3734 lpfc_mbx_cmpl_read_topology(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 3735 { 3736 struct lpfc_vport *vport = pmb->vport; 3737 struct lpfc_mbx_read_top *la; 3738 struct lpfc_sli_ring *pring; 3739 MAILBOX_t *mb = &pmb->u.mb; 3740 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *)(pmb->ctx_buf); 3741 uint8_t attn_type; 3742 3743 /* Unblock ELS traffic */ 3744 pring = lpfc_phba_elsring(phba); 3745 if (pring) 3746 pring->flag &= ~LPFC_STOP_IOCB_EVENT; 3747 3748 /* Check for error */ 3749 if (mb->mbxStatus) { 3750 lpfc_printf_log(phba, KERN_INFO, LOG_LINK_EVENT, 3751 "1307 READ_LA mbox error x%x state x%x\n", 3752 mb->mbxStatus, vport->port_state); 3753 lpfc_mbx_issue_link_down(phba); 3754 phba->link_state = LPFC_HBA_ERROR; 3755 goto lpfc_mbx_cmpl_read_topology_free_mbuf; 3756 } 3757 3758 la = (struct lpfc_mbx_read_top *) &pmb->u.mb.un.varReadTop; 3759 attn_type = bf_get(lpfc_mbx_read_top_att_type, la); 3760 3761 memcpy(&phba->alpa_map[0], mp->virt, 128); 3762 3763 if (bf_get(lpfc_mbx_read_top_pb, la)) 3764 set_bit(FC_BYPASSED_MODE, &vport->fc_flag); 3765 else 3766 clear_bit(FC_BYPASSED_MODE, &vport->fc_flag); 3767 3768 if (phba->fc_eventTag <= la->eventTag) { 3769 phba->fc_stat.LinkMultiEvent++; 3770 if (attn_type == LPFC_ATT_LINK_UP) 3771 if (phba->fc_eventTag != 0) 3772 lpfc_linkdown(phba); 3773 } 3774 3775 phba->fc_eventTag = la->eventTag; 3776 phba->link_events++; 3777 if (attn_type == LPFC_ATT_LINK_UP) { 3778 phba->fc_stat.LinkUp++; 3779 if (phba->link_flag & LS_LOOPBACK_MODE) { 3780 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT, 3781 "1306 Link Up Event in loop back mode " 3782 "x%x received Data: x%x x%x x%x x%x\n", 3783 la->eventTag, phba->fc_eventTag, 3784 bf_get(lpfc_mbx_read_top_alpa_granted, 3785 la), 3786 bf_get(lpfc_mbx_read_top_link_spd, la), 3787 phba->alpa_map[0]); 3788 } else { 3789 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT, 3790 "1303 Link Up Event x%x received " 3791 "Data: x%x x%x x%x x%x x%x\n", 3792 la->eventTag, phba->fc_eventTag, 3793 bf_get(lpfc_mbx_read_top_alpa_granted, 3794 la), 3795 bf_get(lpfc_mbx_read_top_link_spd, la), 3796 phba->alpa_map[0], 3797 bf_get(lpfc_mbx_read_top_fa, la)); 3798 } 3799 lpfc_mbx_process_link_up(phba, la); 3800 3801 if (phba->cmf_active_mode != LPFC_CFG_OFF) 3802 lpfc_cmf_signal_init(phba); 3803 3804 if (phba->lmt & LMT_64Gb) 3805 lpfc_read_lds_params(phba); 3806 3807 } else if (attn_type == LPFC_ATT_LINK_DOWN || 3808 attn_type == LPFC_ATT_UNEXP_WWPN) { 3809 phba->fc_stat.LinkDown++; 3810 if (phba->link_flag & LS_LOOPBACK_MODE) 3811 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT, 3812 "1308 Link Down Event in loop back mode " 3813 "x%x received " 3814 "Data: x%x x%x x%lx\n", 3815 la->eventTag, phba->fc_eventTag, 3816 phba->pport->port_state, vport->fc_flag); 3817 else if (attn_type == LPFC_ATT_UNEXP_WWPN) 3818 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT, 3819 "1313 Link Down Unexpected FA WWPN Event x%x " 3820 "received Data: x%x x%x x%lx x%x\n", 3821 la->eventTag, phba->fc_eventTag, 3822 phba->pport->port_state, vport->fc_flag, 3823 bf_get(lpfc_mbx_read_top_fa, la)); 3824 else 3825 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT, 3826 "1305 Link Down Event x%x received " 3827 "Data: x%x x%x x%lx x%x\n", 3828 la->eventTag, phba->fc_eventTag, 3829 phba->pport->port_state, vport->fc_flag, 3830 bf_get(lpfc_mbx_read_top_fa, la)); 3831 lpfc_mbx_issue_link_down(phba); 3832 } 3833 3834 if ((phba->sli_rev < LPFC_SLI_REV4) && 3835 bf_get(lpfc_mbx_read_top_fa, la)) 3836 lpfc_printf_log(phba, KERN_INFO, LOG_LINK_EVENT, 3837 "1311 fa %d\n", 3838 bf_get(lpfc_mbx_read_top_fa, la)); 3839 3840 lpfc_mbx_cmpl_read_topology_free_mbuf: 3841 lpfc_mbox_rsrc_cleanup(phba, pmb, MBOX_THD_UNLOCKED); 3842 } 3843 3844 /* 3845 * This routine handles processing a REG_LOGIN mailbox 3846 * command upon completion. It is setup in the LPFC_MBOXQ 3847 * as the completion routine when the command is 3848 * handed off to the SLI layer. 3849 */ 3850 void 3851 lpfc_mbx_cmpl_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 3852 { 3853 struct lpfc_vport *vport = pmb->vport; 3854 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *)pmb->ctx_buf; 3855 struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *)pmb->ctx_ndlp; 3856 3857 /* The driver calls the state machine with the pmb pointer 3858 * but wants to make sure a stale ctx_buf isn't acted on. 3859 * The ctx_buf is restored later and cleaned up. 3860 */ 3861 pmb->ctx_buf = NULL; 3862 pmb->ctx_ndlp = NULL; 3863 3864 lpfc_printf_vlog(vport, KERN_INFO, LOG_SLI | LOG_NODE | LOG_DISCOVERY, 3865 "0002 rpi:%x DID:%x flg:%x %d x%px\n", 3866 ndlp->nlp_rpi, ndlp->nlp_DID, ndlp->nlp_flag, 3867 kref_read(&ndlp->kref), 3868 ndlp); 3869 if (ndlp->nlp_flag & NLP_REG_LOGIN_SEND) 3870 ndlp->nlp_flag &= ~NLP_REG_LOGIN_SEND; 3871 3872 if (ndlp->nlp_flag & NLP_IGNR_REG_CMPL || 3873 ndlp->nlp_state != NLP_STE_REG_LOGIN_ISSUE) { 3874 /* We rcvd a rscn after issuing this 3875 * mbox reg login, we may have cycled 3876 * back through the state and be 3877 * back at reg login state so this 3878 * mbox needs to be ignored becase 3879 * there is another reg login in 3880 * process. 3881 */ 3882 spin_lock_irq(&ndlp->lock); 3883 ndlp->nlp_flag &= ~NLP_IGNR_REG_CMPL; 3884 spin_unlock_irq(&ndlp->lock); 3885 3886 /* 3887 * We cannot leave the RPI registered because 3888 * if we go thru discovery again for this ndlp 3889 * a subsequent REG_RPI will fail. 3890 */ 3891 ndlp->nlp_flag |= NLP_RPI_REGISTERED; 3892 lpfc_unreg_rpi(vport, ndlp); 3893 } 3894 3895 /* Call state machine */ 3896 lpfc_disc_state_machine(vport, ndlp, pmb, NLP_EVT_CMPL_REG_LOGIN); 3897 pmb->ctx_buf = mp; 3898 lpfc_mbox_rsrc_cleanup(phba, pmb, MBOX_THD_UNLOCKED); 3899 3900 /* decrement the node reference count held for this callback 3901 * function. 3902 */ 3903 lpfc_nlp_put(ndlp); 3904 3905 return; 3906 } 3907 3908 static void 3909 lpfc_mbx_cmpl_unreg_vpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 3910 { 3911 MAILBOX_t *mb = &pmb->u.mb; 3912 struct lpfc_vport *vport = pmb->vport; 3913 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 3914 3915 switch (mb->mbxStatus) { 3916 case 0x0011: 3917 case 0x0020: 3918 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE, 3919 "0911 cmpl_unreg_vpi, mb status = 0x%x\n", 3920 mb->mbxStatus); 3921 break; 3922 /* If VPI is busy, reset the HBA */ 3923 case 0x9700: 3924 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 3925 "2798 Unreg_vpi failed vpi 0x%x, mb status = 0x%x\n", 3926 vport->vpi, mb->mbxStatus); 3927 if (!test_bit(FC_UNLOADING, &phba->pport->load_flag)) 3928 lpfc_workq_post_event(phba, NULL, NULL, 3929 LPFC_EVT_RESET_HBA); 3930 } 3931 3932 set_bit(FC_VPORT_NEEDS_REG_VPI, &vport->fc_flag); 3933 spin_lock_irq(shost->host_lock); 3934 vport->vpi_state &= ~LPFC_VPI_REGISTERED; 3935 spin_unlock_irq(shost->host_lock); 3936 mempool_free(pmb, phba->mbox_mem_pool); 3937 lpfc_cleanup_vports_rrqs(vport, NULL); 3938 /* 3939 * This shost reference might have been taken at the beginning of 3940 * lpfc_vport_delete() 3941 */ 3942 if (test_bit(FC_UNLOADING, &vport->load_flag) && vport != phba->pport) 3943 scsi_host_put(shost); 3944 } 3945 3946 int 3947 lpfc_mbx_unreg_vpi(struct lpfc_vport *vport) 3948 { 3949 struct lpfc_hba *phba = vport->phba; 3950 LPFC_MBOXQ_t *mbox; 3951 int rc; 3952 3953 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 3954 if (!mbox) 3955 return 1; 3956 3957 lpfc_unreg_vpi(phba, vport->vpi, mbox); 3958 mbox->vport = vport; 3959 mbox->mbox_cmpl = lpfc_mbx_cmpl_unreg_vpi; 3960 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT); 3961 if (rc == MBX_NOT_FINISHED) { 3962 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 3963 "1800 Could not issue unreg_vpi\n"); 3964 mempool_free(mbox, phba->mbox_mem_pool); 3965 return rc; 3966 } 3967 return 0; 3968 } 3969 3970 static void 3971 lpfc_mbx_cmpl_reg_vpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 3972 { 3973 struct lpfc_vport *vport = pmb->vport; 3974 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 3975 MAILBOX_t *mb = &pmb->u.mb; 3976 3977 switch (mb->mbxStatus) { 3978 case 0x0011: 3979 case 0x9601: 3980 case 0x9602: 3981 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE, 3982 "0912 cmpl_reg_vpi, mb status = 0x%x\n", 3983 mb->mbxStatus); 3984 lpfc_vport_set_state(vport, FC_VPORT_FAILED); 3985 clear_bit(FC_FABRIC, &vport->fc_flag); 3986 clear_bit(FC_PUBLIC_LOOP, &vport->fc_flag); 3987 vport->fc_myDID = 0; 3988 3989 if ((vport->cfg_enable_fc4_type == LPFC_ENABLE_BOTH) || 3990 (vport->cfg_enable_fc4_type == LPFC_ENABLE_NVME)) { 3991 if (phba->nvmet_support) 3992 lpfc_nvmet_update_targetport(phba); 3993 else 3994 lpfc_nvme_update_localport(vport); 3995 } 3996 goto out; 3997 } 3998 3999 clear_bit(FC_VPORT_NEEDS_REG_VPI, &vport->fc_flag); 4000 spin_lock_irq(shost->host_lock); 4001 vport->vpi_state |= LPFC_VPI_REGISTERED; 4002 spin_unlock_irq(shost->host_lock); 4003 vport->num_disc_nodes = 0; 4004 /* go thru NPR list and issue ELS PLOGIs */ 4005 if (atomic_read(&vport->fc_npr_cnt)) 4006 lpfc_els_disc_plogi(vport); 4007 4008 if (!vport->num_disc_nodes) { 4009 clear_bit(FC_NDISC_ACTIVE, &vport->fc_flag); 4010 lpfc_can_disctmo(vport); 4011 } 4012 vport->port_state = LPFC_VPORT_READY; 4013 4014 out: 4015 mempool_free(pmb, phba->mbox_mem_pool); 4016 return; 4017 } 4018 4019 /** 4020 * lpfc_create_static_vport - Read HBA config region to create static vports. 4021 * @phba: pointer to lpfc hba data structure. 4022 * 4023 * This routine issue a DUMP mailbox command for config region 22 to get 4024 * the list of static vports to be created. The function create vports 4025 * based on the information returned from the HBA. 4026 **/ 4027 void 4028 lpfc_create_static_vport(struct lpfc_hba *phba) 4029 { 4030 LPFC_MBOXQ_t *pmb = NULL; 4031 MAILBOX_t *mb; 4032 struct static_vport_info *vport_info; 4033 int mbx_wait_rc = 0, i; 4034 struct fc_vport_identifiers vport_id; 4035 struct fc_vport *new_fc_vport; 4036 struct Scsi_Host *shost; 4037 struct lpfc_vport *vport; 4038 uint16_t offset = 0; 4039 uint8_t *vport_buff; 4040 struct lpfc_dmabuf *mp; 4041 uint32_t byte_count = 0; 4042 4043 pmb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 4044 if (!pmb) { 4045 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 4046 "0542 lpfc_create_static_vport failed to" 4047 " allocate mailbox memory\n"); 4048 return; 4049 } 4050 memset(pmb, 0, sizeof(LPFC_MBOXQ_t)); 4051 mb = &pmb->u.mb; 4052 4053 vport_info = kzalloc(sizeof(struct static_vport_info), GFP_KERNEL); 4054 if (!vport_info) { 4055 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 4056 "0543 lpfc_create_static_vport failed to" 4057 " allocate vport_info\n"); 4058 mempool_free(pmb, phba->mbox_mem_pool); 4059 return; 4060 } 4061 4062 vport_buff = (uint8_t *) vport_info; 4063 do { 4064 /* While loop iteration forces a free dma buffer from 4065 * the previous loop because the mbox is reused and 4066 * the dump routine is a single-use construct. 4067 */ 4068 if (pmb->ctx_buf) { 4069 mp = (struct lpfc_dmabuf *)pmb->ctx_buf; 4070 lpfc_mbuf_free(phba, mp->virt, mp->phys); 4071 kfree(mp); 4072 pmb->ctx_buf = NULL; 4073 } 4074 if (lpfc_dump_static_vport(phba, pmb, offset)) 4075 goto out; 4076 4077 pmb->vport = phba->pport; 4078 mbx_wait_rc = lpfc_sli_issue_mbox_wait(phba, pmb, 4079 LPFC_MBOX_TMO); 4080 4081 if ((mbx_wait_rc != MBX_SUCCESS) || mb->mbxStatus) { 4082 lpfc_printf_log(phba, KERN_WARNING, LOG_INIT, 4083 "0544 lpfc_create_static_vport failed to" 4084 " issue dump mailbox command ret 0x%x " 4085 "status 0x%x\n", 4086 mbx_wait_rc, mb->mbxStatus); 4087 goto out; 4088 } 4089 4090 if (phba->sli_rev == LPFC_SLI_REV4) { 4091 byte_count = pmb->u.mqe.un.mb_words[5]; 4092 mp = (struct lpfc_dmabuf *)pmb->ctx_buf; 4093 if (byte_count > sizeof(struct static_vport_info) - 4094 offset) 4095 byte_count = sizeof(struct static_vport_info) 4096 - offset; 4097 memcpy(vport_buff + offset, mp->virt, byte_count); 4098 offset += byte_count; 4099 } else { 4100 if (mb->un.varDmp.word_cnt > 4101 sizeof(struct static_vport_info) - offset) 4102 mb->un.varDmp.word_cnt = 4103 sizeof(struct static_vport_info) 4104 - offset; 4105 byte_count = mb->un.varDmp.word_cnt; 4106 lpfc_sli_pcimem_bcopy(((uint8_t *)mb) + DMP_RSP_OFFSET, 4107 vport_buff + offset, 4108 byte_count); 4109 4110 offset += byte_count; 4111 } 4112 4113 } while (byte_count && 4114 offset < sizeof(struct static_vport_info)); 4115 4116 4117 if ((le32_to_cpu(vport_info->signature) != VPORT_INFO_SIG) || 4118 ((le32_to_cpu(vport_info->rev) & VPORT_INFO_REV_MASK) 4119 != VPORT_INFO_REV)) { 4120 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 4121 "0545 lpfc_create_static_vport bad" 4122 " information header 0x%x 0x%x\n", 4123 le32_to_cpu(vport_info->signature), 4124 le32_to_cpu(vport_info->rev) & 4125 VPORT_INFO_REV_MASK); 4126 4127 goto out; 4128 } 4129 4130 shost = lpfc_shost_from_vport(phba->pport); 4131 4132 for (i = 0; i < MAX_STATIC_VPORT_COUNT; i++) { 4133 memset(&vport_id, 0, sizeof(vport_id)); 4134 vport_id.port_name = wwn_to_u64(vport_info->vport_list[i].wwpn); 4135 vport_id.node_name = wwn_to_u64(vport_info->vport_list[i].wwnn); 4136 if (!vport_id.port_name || !vport_id.node_name) 4137 continue; 4138 4139 vport_id.roles = FC_PORT_ROLE_FCP_INITIATOR; 4140 vport_id.vport_type = FC_PORTTYPE_NPIV; 4141 vport_id.disable = false; 4142 new_fc_vport = fc_vport_create(shost, 0, &vport_id); 4143 4144 if (!new_fc_vport) { 4145 lpfc_printf_log(phba, KERN_WARNING, LOG_INIT, 4146 "0546 lpfc_create_static_vport failed to" 4147 " create vport\n"); 4148 continue; 4149 } 4150 4151 vport = *(struct lpfc_vport **)new_fc_vport->dd_data; 4152 vport->vport_flag |= STATIC_VPORT; 4153 } 4154 4155 out: 4156 kfree(vport_info); 4157 if (mbx_wait_rc != MBX_TIMEOUT) 4158 lpfc_mbox_rsrc_cleanup(phba, pmb, MBOX_THD_UNLOCKED); 4159 } 4160 4161 /* 4162 * This routine handles processing a Fabric REG_LOGIN mailbox 4163 * command upon completion. It is setup in the LPFC_MBOXQ 4164 * as the completion routine when the command is 4165 * handed off to the SLI layer. 4166 */ 4167 void 4168 lpfc_mbx_cmpl_fabric_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 4169 { 4170 struct lpfc_vport *vport = pmb->vport; 4171 MAILBOX_t *mb = &pmb->u.mb; 4172 struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *)pmb->ctx_ndlp; 4173 4174 pmb->ctx_ndlp = NULL; 4175 4176 if (mb->mbxStatus) { 4177 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 4178 "0258 Register Fabric login error: 0x%x\n", 4179 mb->mbxStatus); 4180 lpfc_mbox_rsrc_cleanup(phba, pmb, MBOX_THD_UNLOCKED); 4181 if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) { 4182 /* FLOGI failed, use loop map to make discovery list */ 4183 lpfc_disc_list_loopmap(vport); 4184 4185 /* Start discovery */ 4186 lpfc_disc_start(vport); 4187 /* Decrement the reference count to ndlp after the 4188 * reference to the ndlp are done. 4189 */ 4190 lpfc_nlp_put(ndlp); 4191 return; 4192 } 4193 4194 lpfc_vport_set_state(vport, FC_VPORT_FAILED); 4195 /* Decrement the reference count to ndlp after the reference 4196 * to the ndlp are done. 4197 */ 4198 lpfc_nlp_put(ndlp); 4199 return; 4200 } 4201 4202 if (phba->sli_rev < LPFC_SLI_REV4) 4203 ndlp->nlp_rpi = mb->un.varWords[0]; 4204 ndlp->nlp_flag |= NLP_RPI_REGISTERED; 4205 ndlp->nlp_type |= NLP_FABRIC; 4206 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE); 4207 4208 if (vport->port_state == LPFC_FABRIC_CFG_LINK) { 4209 /* when physical port receive logo donot start 4210 * vport discovery */ 4211 if (!test_and_clear_bit(FC_LOGO_RCVD_DID_CHNG, &vport->fc_flag)) 4212 lpfc_start_fdiscs(phba); 4213 lpfc_do_scr_ns_plogi(phba, vport); 4214 } 4215 4216 lpfc_mbox_rsrc_cleanup(phba, pmb, MBOX_THD_UNLOCKED); 4217 4218 /* Drop the reference count from the mbox at the end after 4219 * all the current reference to the ndlp have been done. 4220 */ 4221 lpfc_nlp_put(ndlp); 4222 return; 4223 } 4224 4225 /* 4226 * This routine will issue a GID_FT for each FC4 Type supported 4227 * by the driver. ALL GID_FTs must complete before discovery is started. 4228 */ 4229 int 4230 lpfc_issue_gidft(struct lpfc_vport *vport) 4231 { 4232 /* Good status, issue CT Request to NameServer */ 4233 if ((vport->cfg_enable_fc4_type == LPFC_ENABLE_BOTH) || 4234 (vport->cfg_enable_fc4_type == LPFC_ENABLE_FCP)) { 4235 if (lpfc_ns_cmd(vport, SLI_CTNS_GID_FT, 0, SLI_CTPT_FCP)) { 4236 /* Cannot issue NameServer FCP Query, so finish up 4237 * discovery 4238 */ 4239 lpfc_printf_vlog(vport, KERN_ERR, 4240 LOG_TRACE_EVENT, 4241 "0604 %s FC TYPE %x %s\n", 4242 "Failed to issue GID_FT to ", 4243 FC_TYPE_FCP, 4244 "Finishing discovery."); 4245 return 0; 4246 } 4247 vport->gidft_inp++; 4248 } 4249 4250 if ((vport->cfg_enable_fc4_type == LPFC_ENABLE_BOTH) || 4251 (vport->cfg_enable_fc4_type == LPFC_ENABLE_NVME)) { 4252 if (lpfc_ns_cmd(vport, SLI_CTNS_GID_FT, 0, SLI_CTPT_NVME)) { 4253 /* Cannot issue NameServer NVME Query, so finish up 4254 * discovery 4255 */ 4256 lpfc_printf_vlog(vport, KERN_ERR, 4257 LOG_TRACE_EVENT, 4258 "0605 %s FC_TYPE %x %s %d\n", 4259 "Failed to issue GID_FT to ", 4260 FC_TYPE_NVME, 4261 "Finishing discovery: gidftinp ", 4262 vport->gidft_inp); 4263 if (vport->gidft_inp == 0) 4264 return 0; 4265 } else 4266 vport->gidft_inp++; 4267 } 4268 return vport->gidft_inp; 4269 } 4270 4271 /** 4272 * lpfc_issue_gidpt - issue a GID_PT for all N_Ports 4273 * @vport: The virtual port for which this call is being executed. 4274 * 4275 * This routine will issue a GID_PT to get a list of all N_Ports 4276 * 4277 * Return value : 4278 * 0 - Failure to issue a GID_PT 4279 * 1 - GID_PT issued 4280 **/ 4281 int 4282 lpfc_issue_gidpt(struct lpfc_vport *vport) 4283 { 4284 /* Good status, issue CT Request to NameServer */ 4285 if (lpfc_ns_cmd(vport, SLI_CTNS_GID_PT, 0, GID_PT_N_PORT)) { 4286 /* Cannot issue NameServer FCP Query, so finish up 4287 * discovery 4288 */ 4289 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 4290 "0606 %s Port TYPE %x %s\n", 4291 "Failed to issue GID_PT to ", 4292 GID_PT_N_PORT, 4293 "Finishing discovery."); 4294 return 0; 4295 } 4296 vport->gidft_inp++; 4297 return 1; 4298 } 4299 4300 /* 4301 * This routine handles processing a NameServer REG_LOGIN mailbox 4302 * command upon completion. It is setup in the LPFC_MBOXQ 4303 * as the completion routine when the command is 4304 * handed off to the SLI layer. 4305 */ 4306 void 4307 lpfc_mbx_cmpl_ns_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 4308 { 4309 MAILBOX_t *mb = &pmb->u.mb; 4310 struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *)pmb->ctx_ndlp; 4311 struct lpfc_vport *vport = pmb->vport; 4312 int rc; 4313 4314 pmb->ctx_ndlp = NULL; 4315 vport->gidft_inp = 0; 4316 4317 if (mb->mbxStatus) { 4318 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 4319 "0260 Register NameServer error: 0x%x\n", 4320 mb->mbxStatus); 4321 4322 out: 4323 /* decrement the node reference count held for this 4324 * callback function. 4325 */ 4326 lpfc_nlp_put(ndlp); 4327 lpfc_mbox_rsrc_cleanup(phba, pmb, MBOX_THD_UNLOCKED); 4328 4329 /* If the node is not registered with the scsi or nvme 4330 * transport, remove the fabric node. The failed reg_login 4331 * is terminal and forces the removal of the last node 4332 * reference. 4333 */ 4334 if (!(ndlp->fc4_xpt_flags & (SCSI_XPT_REGD | NVME_XPT_REGD))) { 4335 spin_lock_irq(&ndlp->lock); 4336 ndlp->nlp_flag &= ~NLP_NPR_2B_DISC; 4337 spin_unlock_irq(&ndlp->lock); 4338 lpfc_nlp_put(ndlp); 4339 } 4340 4341 if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) { 4342 /* 4343 * RegLogin failed, use loop map to make discovery 4344 * list 4345 */ 4346 lpfc_disc_list_loopmap(vport); 4347 4348 /* Start discovery */ 4349 lpfc_disc_start(vport); 4350 return; 4351 } 4352 lpfc_vport_set_state(vport, FC_VPORT_FAILED); 4353 return; 4354 } 4355 4356 if (phba->sli_rev < LPFC_SLI_REV4) 4357 ndlp->nlp_rpi = mb->un.varWords[0]; 4358 ndlp->nlp_flag |= NLP_RPI_REGISTERED; 4359 ndlp->nlp_type |= NLP_FABRIC; 4360 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE); 4361 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE | LOG_DISCOVERY, 4362 "0003 rpi:%x DID:%x flg:%x %d x%px\n", 4363 ndlp->nlp_rpi, ndlp->nlp_DID, ndlp->nlp_flag, 4364 kref_read(&ndlp->kref), 4365 ndlp); 4366 4367 if (vport->port_state < LPFC_VPORT_READY) { 4368 /* Link up discovery requires Fabric registration. */ 4369 lpfc_ns_cmd(vport, SLI_CTNS_RNN_ID, 0, 0); 4370 lpfc_ns_cmd(vport, SLI_CTNS_RSNN_NN, 0, 0); 4371 lpfc_ns_cmd(vport, SLI_CTNS_RSPN_ID, 0, 0); 4372 lpfc_ns_cmd(vport, SLI_CTNS_RFT_ID, 0, 0); 4373 4374 if ((vport->cfg_enable_fc4_type == LPFC_ENABLE_BOTH) || 4375 (vport->cfg_enable_fc4_type == LPFC_ENABLE_FCP)) 4376 lpfc_ns_cmd(vport, SLI_CTNS_RFF_ID, 0, FC_TYPE_FCP); 4377 4378 if ((vport->cfg_enable_fc4_type == LPFC_ENABLE_BOTH) || 4379 (vport->cfg_enable_fc4_type == LPFC_ENABLE_NVME)) 4380 lpfc_ns_cmd(vport, SLI_CTNS_RFF_ID, 0, 4381 FC_TYPE_NVME); 4382 4383 /* Issue SCR just before NameServer GID_FT Query */ 4384 lpfc_issue_els_scr(vport, 0); 4385 4386 /* Link was bounced or a Fabric LOGO occurred. Start EDC 4387 * with initial FW values provided the congestion mode is 4388 * not off. Note that signals may or may not be supported 4389 * by the adapter but FPIN is provided by default for 1 4390 * or both missing signals support. 4391 */ 4392 if (phba->cmf_active_mode != LPFC_CFG_OFF) { 4393 phba->cgn_reg_fpin = phba->cgn_init_reg_fpin; 4394 phba->cgn_reg_signal = phba->cgn_init_reg_signal; 4395 rc = lpfc_issue_els_edc(vport, 0); 4396 lpfc_printf_log(phba, KERN_INFO, 4397 LOG_INIT | LOG_ELS | LOG_DISCOVERY, 4398 "4220 Issue EDC status x%x Data x%x\n", 4399 rc, phba->cgn_init_reg_signal); 4400 } else if (phba->lmt & LMT_64Gb) { 4401 /* may send link fault capability descriptor */ 4402 lpfc_issue_els_edc(vport, 0); 4403 } else { 4404 lpfc_issue_els_rdf(vport, 0); 4405 } 4406 } 4407 4408 vport->fc_ns_retry = 0; 4409 if (lpfc_issue_gidft(vport) == 0) 4410 goto out; 4411 4412 /* 4413 * At this point in time we may need to wait for multiple 4414 * SLI_CTNS_GID_FT CT commands to complete before we start discovery. 4415 * 4416 * decrement the node reference count held for this 4417 * callback function. 4418 */ 4419 lpfc_nlp_put(ndlp); 4420 lpfc_mbox_rsrc_cleanup(phba, pmb, MBOX_THD_UNLOCKED); 4421 return; 4422 } 4423 4424 /* 4425 * This routine handles processing a Fabric Controller REG_LOGIN mailbox 4426 * command upon completion. It is setup in the LPFC_MBOXQ 4427 * as the completion routine when the command is handed off to the SLI layer. 4428 */ 4429 void 4430 lpfc_mbx_cmpl_fc_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 4431 { 4432 struct lpfc_vport *vport = pmb->vport; 4433 MAILBOX_t *mb = &pmb->u.mb; 4434 struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *)pmb->ctx_ndlp; 4435 4436 pmb->ctx_ndlp = NULL; 4437 if (mb->mbxStatus) { 4438 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 4439 "0933 %s: Register FC login error: 0x%x\n", 4440 __func__, mb->mbxStatus); 4441 goto out; 4442 } 4443 4444 lpfc_check_nlp_post_devloss(vport, ndlp); 4445 4446 if (phba->sli_rev < LPFC_SLI_REV4) 4447 ndlp->nlp_rpi = mb->un.varWords[0]; 4448 4449 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE, 4450 "0934 %s: Complete FC x%x RegLogin rpi x%x ste x%x\n", 4451 __func__, ndlp->nlp_DID, ndlp->nlp_rpi, 4452 ndlp->nlp_state); 4453 4454 ndlp->nlp_flag |= NLP_RPI_REGISTERED; 4455 ndlp->nlp_flag &= ~NLP_REG_LOGIN_SEND; 4456 ndlp->nlp_type |= NLP_FABRIC; 4457 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE); 4458 4459 out: 4460 lpfc_mbox_rsrc_cleanup(phba, pmb, MBOX_THD_UNLOCKED); 4461 4462 /* Drop the reference count from the mbox at the end after 4463 * all the current reference to the ndlp have been done. 4464 */ 4465 lpfc_nlp_put(ndlp); 4466 } 4467 4468 static void 4469 lpfc_register_remote_port(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) 4470 { 4471 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 4472 struct fc_rport *rport; 4473 struct lpfc_rport_data *rdata; 4474 struct fc_rport_identifiers rport_ids; 4475 struct lpfc_hba *phba = vport->phba; 4476 unsigned long flags; 4477 4478 if (vport->cfg_enable_fc4_type == LPFC_ENABLE_NVME) 4479 return; 4480 4481 /* Remote port has reappeared. Re-register w/ FC transport */ 4482 rport_ids.node_name = wwn_to_u64(ndlp->nlp_nodename.u.wwn); 4483 rport_ids.port_name = wwn_to_u64(ndlp->nlp_portname.u.wwn); 4484 rport_ids.port_id = ndlp->nlp_DID; 4485 rport_ids.roles = FC_RPORT_ROLE_UNKNOWN; 4486 4487 4488 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT, 4489 "rport add: did:x%x flg:x%x type x%x", 4490 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type); 4491 4492 /* Don't add the remote port if unloading. */ 4493 if (test_bit(FC_UNLOADING, &vport->load_flag)) 4494 return; 4495 4496 ndlp->rport = rport = fc_remote_port_add(shost, 0, &rport_ids); 4497 if (!rport) { 4498 dev_printk(KERN_WARNING, &phba->pcidev->dev, 4499 "Warning: fc_remote_port_add failed\n"); 4500 return; 4501 } 4502 4503 /* Successful port add. Complete initializing node data */ 4504 rport->maxframe_size = ndlp->nlp_maxframe; 4505 rport->supported_classes = ndlp->nlp_class_sup; 4506 rdata = rport->dd_data; 4507 rdata->pnode = lpfc_nlp_get(ndlp); 4508 if (!rdata->pnode) { 4509 dev_warn(&phba->pcidev->dev, 4510 "Warning - node ref failed. Unreg rport\n"); 4511 fc_remote_port_delete(rport); 4512 ndlp->rport = NULL; 4513 return; 4514 } 4515 4516 spin_lock_irqsave(&ndlp->lock, flags); 4517 ndlp->fc4_xpt_flags |= SCSI_XPT_REGD; 4518 spin_unlock_irqrestore(&ndlp->lock, flags); 4519 4520 if (ndlp->nlp_type & NLP_FCP_TARGET) 4521 rport_ids.roles |= FC_PORT_ROLE_FCP_TARGET; 4522 if (ndlp->nlp_type & NLP_FCP_INITIATOR) 4523 rport_ids.roles |= FC_PORT_ROLE_FCP_INITIATOR; 4524 if (ndlp->nlp_type & NLP_NVME_INITIATOR) 4525 rport_ids.roles |= FC_PORT_ROLE_NVME_INITIATOR; 4526 if (ndlp->nlp_type & NLP_NVME_TARGET) 4527 rport_ids.roles |= FC_PORT_ROLE_NVME_TARGET; 4528 if (ndlp->nlp_type & NLP_NVME_DISCOVERY) 4529 rport_ids.roles |= FC_PORT_ROLE_NVME_DISCOVERY; 4530 4531 if (rport_ids.roles != FC_RPORT_ROLE_UNKNOWN) 4532 fc_remote_port_rolechg(rport, rport_ids.roles); 4533 4534 lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_NODE, 4535 "3183 %s rport x%px DID x%x, role x%x refcnt %d\n", 4536 __func__, rport, rport->port_id, rport->roles, 4537 kref_read(&ndlp->kref)); 4538 4539 if ((rport->scsi_target_id != -1) && 4540 (rport->scsi_target_id < LPFC_MAX_TARGET)) { 4541 ndlp->nlp_sid = rport->scsi_target_id; 4542 } 4543 4544 return; 4545 } 4546 4547 static void 4548 lpfc_unregister_remote_port(struct lpfc_nodelist *ndlp) 4549 { 4550 struct fc_rport *rport = ndlp->rport; 4551 struct lpfc_vport *vport = ndlp->vport; 4552 4553 if (vport->cfg_enable_fc4_type == LPFC_ENABLE_NVME) 4554 return; 4555 4556 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT, 4557 "rport delete: did:x%x flg:x%x type x%x", 4558 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type); 4559 4560 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE, 4561 "3184 rport unregister x%06x, rport x%px " 4562 "xptflg x%x refcnt %d\n", 4563 ndlp->nlp_DID, rport, ndlp->fc4_xpt_flags, 4564 kref_read(&ndlp->kref)); 4565 4566 fc_remote_port_delete(rport); 4567 lpfc_nlp_put(ndlp); 4568 } 4569 4570 static void 4571 lpfc_nlp_counters(struct lpfc_vport *vport, int state, int count) 4572 { 4573 switch (state) { 4574 case NLP_STE_UNUSED_NODE: 4575 atomic_add(count, &vport->fc_unused_cnt); 4576 break; 4577 case NLP_STE_PLOGI_ISSUE: 4578 atomic_add(count, &vport->fc_plogi_cnt); 4579 break; 4580 case NLP_STE_ADISC_ISSUE: 4581 atomic_add(count, &vport->fc_adisc_cnt); 4582 break; 4583 case NLP_STE_REG_LOGIN_ISSUE: 4584 atomic_add(count, &vport->fc_reglogin_cnt); 4585 break; 4586 case NLP_STE_PRLI_ISSUE: 4587 atomic_add(count, &vport->fc_prli_cnt); 4588 break; 4589 case NLP_STE_UNMAPPED_NODE: 4590 atomic_add(count, &vport->fc_unmap_cnt); 4591 break; 4592 case NLP_STE_MAPPED_NODE: 4593 atomic_add(count, &vport->fc_map_cnt); 4594 break; 4595 case NLP_STE_NPR_NODE: 4596 if (!atomic_read(&vport->fc_npr_cnt) && count == -1) 4597 atomic_set(&vport->fc_npr_cnt, 0); 4598 else 4599 atomic_add(count, &vport->fc_npr_cnt); 4600 break; 4601 } 4602 } 4603 4604 /* Register a node with backend if not already done */ 4605 void 4606 lpfc_nlp_reg_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) 4607 { 4608 unsigned long iflags; 4609 4610 lpfc_check_nlp_post_devloss(vport, ndlp); 4611 4612 spin_lock_irqsave(&ndlp->lock, iflags); 4613 if (ndlp->fc4_xpt_flags & NLP_XPT_REGD) { 4614 /* Already registered with backend, trigger rescan */ 4615 spin_unlock_irqrestore(&ndlp->lock, iflags); 4616 4617 if (ndlp->fc4_xpt_flags & NVME_XPT_REGD && 4618 ndlp->nlp_type & (NLP_NVME_TARGET | NLP_NVME_DISCOVERY)) { 4619 lpfc_nvme_rescan_port(vport, ndlp); 4620 } 4621 return; 4622 } 4623 4624 ndlp->fc4_xpt_flags |= NLP_XPT_REGD; 4625 spin_unlock_irqrestore(&ndlp->lock, iflags); 4626 4627 if (lpfc_valid_xpt_node(ndlp)) { 4628 vport->phba->nport_event_cnt++; 4629 /* 4630 * Tell the fc transport about the port, if we haven't 4631 * already. If we have, and it's a scsi entity, be 4632 */ 4633 lpfc_register_remote_port(vport, ndlp); 4634 } 4635 4636 /* We are done if we do not have any NVME remote node */ 4637 if (!(ndlp->nlp_fc4_type & NLP_FC4_NVME)) 4638 return; 4639 4640 /* Notify the NVME transport of this new rport. */ 4641 if (vport->phba->sli_rev >= LPFC_SLI_REV4 && 4642 ndlp->nlp_fc4_type & NLP_FC4_NVME) { 4643 if (vport->phba->nvmet_support == 0) { 4644 /* Register this rport with the transport. 4645 * Only NVME Target Rports are registered with 4646 * the transport. 4647 */ 4648 if (ndlp->nlp_type & NLP_NVME_TARGET) { 4649 vport->phba->nport_event_cnt++; 4650 lpfc_nvme_register_port(vport, ndlp); 4651 } 4652 } else { 4653 /* Just take an NDLP ref count since the 4654 * target does not register rports. 4655 */ 4656 lpfc_nlp_get(ndlp); 4657 } 4658 } 4659 } 4660 4661 /* Unregister a node with backend if not already done */ 4662 void 4663 lpfc_nlp_unreg_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) 4664 { 4665 unsigned long iflags; 4666 4667 spin_lock_irqsave(&ndlp->lock, iflags); 4668 if (!(ndlp->fc4_xpt_flags & NLP_XPT_REGD)) { 4669 spin_unlock_irqrestore(&ndlp->lock, iflags); 4670 lpfc_printf_vlog(vport, KERN_INFO, 4671 LOG_ELS | LOG_NODE | LOG_DISCOVERY, 4672 "0999 %s Not regd: ndlp x%px rport x%px DID " 4673 "x%x FLG x%x XPT x%x\n", 4674 __func__, ndlp, ndlp->rport, ndlp->nlp_DID, 4675 ndlp->nlp_flag, ndlp->fc4_xpt_flags); 4676 return; 4677 } 4678 4679 ndlp->fc4_xpt_flags &= ~NLP_XPT_REGD; 4680 spin_unlock_irqrestore(&ndlp->lock, iflags); 4681 4682 if (ndlp->rport && 4683 ndlp->fc4_xpt_flags & SCSI_XPT_REGD) { 4684 vport->phba->nport_event_cnt++; 4685 lpfc_unregister_remote_port(ndlp); 4686 } else if (!ndlp->rport) { 4687 lpfc_printf_vlog(vport, KERN_INFO, 4688 LOG_ELS | LOG_NODE | LOG_DISCOVERY, 4689 "1999 %s NDLP in devloss x%px DID x%x FLG x%x" 4690 " XPT x%x refcnt %u\n", 4691 __func__, ndlp, ndlp->nlp_DID, ndlp->nlp_flag, 4692 ndlp->fc4_xpt_flags, 4693 kref_read(&ndlp->kref)); 4694 } 4695 4696 if (ndlp->fc4_xpt_flags & NVME_XPT_REGD) { 4697 vport->phba->nport_event_cnt++; 4698 if (vport->phba->nvmet_support == 0) { 4699 /* Start devloss if target. */ 4700 if (ndlp->nlp_type & NLP_NVME_TARGET) 4701 lpfc_nvme_unregister_port(vport, ndlp); 4702 } else { 4703 /* NVMET has no upcall. */ 4704 lpfc_nlp_put(ndlp); 4705 } 4706 } 4707 4708 } 4709 4710 /* 4711 * Adisc state change handling 4712 */ 4713 static void 4714 lpfc_handle_adisc_state(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 4715 int new_state) 4716 { 4717 switch (new_state) { 4718 /* 4719 * Any state to ADISC_ISSUE 4720 * Do nothing, adisc cmpl handling will trigger state changes 4721 */ 4722 case NLP_STE_ADISC_ISSUE: 4723 break; 4724 4725 /* 4726 * ADISC_ISSUE to mapped states 4727 * Trigger a registration with backend, it will be nop if 4728 * already registered 4729 */ 4730 case NLP_STE_UNMAPPED_NODE: 4731 ndlp->nlp_type |= NLP_FC_NODE; 4732 fallthrough; 4733 case NLP_STE_MAPPED_NODE: 4734 ndlp->nlp_flag &= ~NLP_NODEV_REMOVE; 4735 lpfc_nlp_reg_node(vport, ndlp); 4736 break; 4737 4738 /* 4739 * ADISC_ISSUE to non-mapped states 4740 * We are moving from ADISC_ISSUE to a non-mapped state because 4741 * ADISC failed, we would have skipped unregistering with 4742 * backend, attempt it now 4743 */ 4744 case NLP_STE_NPR_NODE: 4745 ndlp->nlp_flag &= ~NLP_RCV_PLOGI; 4746 fallthrough; 4747 default: 4748 lpfc_nlp_unreg_node(vport, ndlp); 4749 break; 4750 } 4751 4752 } 4753 4754 static void 4755 lpfc_nlp_state_cleanup(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 4756 int old_state, int new_state) 4757 { 4758 /* Trap ADISC changes here */ 4759 if (new_state == NLP_STE_ADISC_ISSUE || 4760 old_state == NLP_STE_ADISC_ISSUE) { 4761 lpfc_handle_adisc_state(vport, ndlp, new_state); 4762 return; 4763 } 4764 4765 if (new_state == NLP_STE_UNMAPPED_NODE) { 4766 ndlp->nlp_flag &= ~NLP_NODEV_REMOVE; 4767 ndlp->nlp_type |= NLP_FC_NODE; 4768 } 4769 if (new_state == NLP_STE_MAPPED_NODE) 4770 ndlp->nlp_flag &= ~NLP_NODEV_REMOVE; 4771 if (new_state == NLP_STE_NPR_NODE) 4772 ndlp->nlp_flag &= ~NLP_RCV_PLOGI; 4773 4774 /* Reg/Unreg for FCP and NVME Transport interface */ 4775 if ((old_state == NLP_STE_MAPPED_NODE || 4776 old_state == NLP_STE_UNMAPPED_NODE)) { 4777 /* For nodes marked for ADISC, Handle unreg in ADISC cmpl 4778 * if linkup. In linkdown do unreg_node 4779 */ 4780 if (!(ndlp->nlp_flag & NLP_NPR_ADISC) || 4781 !lpfc_is_link_up(vport->phba)) 4782 lpfc_nlp_unreg_node(vport, ndlp); 4783 } 4784 4785 if (new_state == NLP_STE_MAPPED_NODE || 4786 new_state == NLP_STE_UNMAPPED_NODE) 4787 lpfc_nlp_reg_node(vport, ndlp); 4788 4789 /* 4790 * If the node just added to Mapped list was an FCP target, 4791 * but the remote port registration failed or assigned a target 4792 * id outside the presentable range - move the node to the 4793 * Unmapped List. 4794 */ 4795 if ((new_state == NLP_STE_MAPPED_NODE) && 4796 (ndlp->nlp_type & NLP_FCP_TARGET) && 4797 (!ndlp->rport || 4798 ndlp->rport->scsi_target_id == -1 || 4799 ndlp->rport->scsi_target_id >= LPFC_MAX_TARGET)) { 4800 spin_lock_irq(&ndlp->lock); 4801 ndlp->nlp_flag |= NLP_TGT_NO_SCSIID; 4802 spin_unlock_irq(&ndlp->lock); 4803 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE); 4804 } 4805 } 4806 4807 static char * 4808 lpfc_nlp_state_name(char *buffer, size_t size, int state) 4809 { 4810 static char *states[] = { 4811 [NLP_STE_UNUSED_NODE] = "UNUSED", 4812 [NLP_STE_PLOGI_ISSUE] = "PLOGI", 4813 [NLP_STE_ADISC_ISSUE] = "ADISC", 4814 [NLP_STE_REG_LOGIN_ISSUE] = "REGLOGIN", 4815 [NLP_STE_PRLI_ISSUE] = "PRLI", 4816 [NLP_STE_LOGO_ISSUE] = "LOGO", 4817 [NLP_STE_UNMAPPED_NODE] = "UNMAPPED", 4818 [NLP_STE_MAPPED_NODE] = "MAPPED", 4819 [NLP_STE_NPR_NODE] = "NPR", 4820 }; 4821 4822 if (state < NLP_STE_MAX_STATE && states[state]) 4823 strscpy(buffer, states[state], size); 4824 else 4825 snprintf(buffer, size, "unknown (%d)", state); 4826 return buffer; 4827 } 4828 4829 void 4830 lpfc_nlp_set_state(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 4831 int state) 4832 { 4833 int old_state = ndlp->nlp_state; 4834 int node_dropped = ndlp->nlp_flag & NLP_DROPPED; 4835 char name1[16], name2[16]; 4836 unsigned long iflags; 4837 4838 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE, 4839 "0904 NPort state transition x%06x, %s -> %s\n", 4840 ndlp->nlp_DID, 4841 lpfc_nlp_state_name(name1, sizeof(name1), old_state), 4842 lpfc_nlp_state_name(name2, sizeof(name2), state)); 4843 4844 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE, 4845 "node statechg did:x%x old:%d ste:%d", 4846 ndlp->nlp_DID, old_state, state); 4847 4848 if (node_dropped && old_state == NLP_STE_UNUSED_NODE && 4849 state != NLP_STE_UNUSED_NODE) { 4850 ndlp->nlp_flag &= ~NLP_DROPPED; 4851 lpfc_nlp_get(ndlp); 4852 } 4853 4854 if (old_state == NLP_STE_NPR_NODE && 4855 state != NLP_STE_NPR_NODE) 4856 lpfc_cancel_retry_delay_tmo(vport, ndlp); 4857 if (old_state == NLP_STE_UNMAPPED_NODE) { 4858 ndlp->nlp_flag &= ~NLP_TGT_NO_SCSIID; 4859 ndlp->nlp_type &= ~NLP_FC_NODE; 4860 } 4861 4862 if (list_empty(&ndlp->nlp_listp)) { 4863 spin_lock_irqsave(&vport->fc_nodes_list_lock, iflags); 4864 list_add_tail(&ndlp->nlp_listp, &vport->fc_nodes); 4865 spin_unlock_irqrestore(&vport->fc_nodes_list_lock, iflags); 4866 } else if (old_state) 4867 lpfc_nlp_counters(vport, old_state, -1); 4868 4869 ndlp->nlp_state = state; 4870 lpfc_nlp_counters(vport, state, 1); 4871 lpfc_nlp_state_cleanup(vport, ndlp, old_state, state); 4872 } 4873 4874 void 4875 lpfc_enqueue_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) 4876 { 4877 unsigned long iflags; 4878 4879 if (list_empty(&ndlp->nlp_listp)) { 4880 spin_lock_irqsave(&vport->fc_nodes_list_lock, iflags); 4881 list_add_tail(&ndlp->nlp_listp, &vport->fc_nodes); 4882 spin_unlock_irqrestore(&vport->fc_nodes_list_lock, iflags); 4883 } 4884 } 4885 4886 void 4887 lpfc_dequeue_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) 4888 { 4889 unsigned long iflags; 4890 4891 lpfc_cancel_retry_delay_tmo(vport, ndlp); 4892 if (ndlp->nlp_state && !list_empty(&ndlp->nlp_listp)) 4893 lpfc_nlp_counters(vport, ndlp->nlp_state, -1); 4894 spin_lock_irqsave(&vport->fc_nodes_list_lock, iflags); 4895 list_del_init(&ndlp->nlp_listp); 4896 spin_unlock_irqrestore(&vport->fc_nodes_list_lock, iflags); 4897 lpfc_nlp_state_cleanup(vport, ndlp, ndlp->nlp_state, 4898 NLP_STE_UNUSED_NODE); 4899 } 4900 4901 /** 4902 * lpfc_initialize_node - Initialize all fields of node object 4903 * @vport: Pointer to Virtual Port object. 4904 * @ndlp: Pointer to FC node object. 4905 * @did: FC_ID of the node. 4906 * 4907 * This function is always called when node object need to be initialized. 4908 * It initializes all the fields of the node object. Although the reference 4909 * to phba from @ndlp can be obtained indirectly through it's reference to 4910 * @vport, a direct reference to phba is taken here by @ndlp. This is due 4911 * to the life-span of the @ndlp might go beyond the existence of @vport as 4912 * the final release of ndlp is determined by its reference count. And, the 4913 * operation on @ndlp needs the reference to phba. 4914 **/ 4915 static inline void 4916 lpfc_initialize_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 4917 uint32_t did) 4918 { 4919 INIT_LIST_HEAD(&ndlp->els_retry_evt.evt_listp); 4920 INIT_LIST_HEAD(&ndlp->dev_loss_evt.evt_listp); 4921 timer_setup(&ndlp->nlp_delayfunc, lpfc_els_retry_delay, 0); 4922 INIT_LIST_HEAD(&ndlp->recovery_evt.evt_listp); 4923 4924 ndlp->nlp_DID = did; 4925 ndlp->vport = vport; 4926 ndlp->phba = vport->phba; 4927 ndlp->nlp_sid = NLP_NO_SID; 4928 ndlp->nlp_fc4_type = NLP_FC4_NONE; 4929 kref_init(&ndlp->kref); 4930 atomic_set(&ndlp->cmd_pending, 0); 4931 ndlp->cmd_qdepth = vport->cfg_tgt_queue_depth; 4932 ndlp->nlp_defer_did = NLP_EVT_NOTHING_PENDING; 4933 } 4934 4935 void 4936 lpfc_drop_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) 4937 { 4938 /* 4939 * Use of lpfc_drop_node and UNUSED list: lpfc_drop_node should 4940 * be used when lpfc wants to remove the "last" lpfc_nlp_put() to 4941 * release the ndlp from the vport when conditions are correct. 4942 */ 4943 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE) 4944 return; 4945 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNUSED_NODE); 4946 if (vport->phba->sli_rev == LPFC_SLI_REV4) { 4947 lpfc_cleanup_vports_rrqs(vport, ndlp); 4948 lpfc_unreg_rpi(vport, ndlp); 4949 } 4950 4951 /* NLP_DROPPED means another thread already removed the initial 4952 * reference from lpfc_nlp_init. If set, don't drop it again and 4953 * introduce an imbalance. 4954 */ 4955 spin_lock_irq(&ndlp->lock); 4956 if (!(ndlp->nlp_flag & NLP_DROPPED)) { 4957 ndlp->nlp_flag |= NLP_DROPPED; 4958 spin_unlock_irq(&ndlp->lock); 4959 lpfc_nlp_put(ndlp); 4960 return; 4961 } 4962 spin_unlock_irq(&ndlp->lock); 4963 } 4964 4965 /* 4966 * Start / ReStart rescue timer for Discovery / RSCN handling 4967 */ 4968 void 4969 lpfc_set_disctmo(struct lpfc_vport *vport) 4970 { 4971 struct lpfc_hba *phba = vport->phba; 4972 uint32_t tmo; 4973 4974 if (vport->port_state == LPFC_LOCAL_CFG_LINK) { 4975 /* For FAN, timeout should be greater than edtov */ 4976 tmo = (((phba->fc_edtov + 999) / 1000) + 1); 4977 } else { 4978 /* Normal discovery timeout should be > than ELS/CT timeout 4979 * FC spec states we need 3 * ratov for CT requests 4980 */ 4981 tmo = ((phba->fc_ratov * 3) + 3); 4982 } 4983 4984 4985 if (!timer_pending(&vport->fc_disctmo)) { 4986 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, 4987 "set disc timer: tmo:x%x state:x%x flg:x%x", 4988 tmo, vport->port_state, vport->fc_flag); 4989 } 4990 4991 mod_timer(&vport->fc_disctmo, jiffies + msecs_to_jiffies(1000 * tmo)); 4992 set_bit(FC_DISC_TMO, &vport->fc_flag); 4993 4994 /* Start Discovery Timer state <hba_state> */ 4995 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, 4996 "0247 Start Discovery Timer state x%x " 4997 "Data: x%x x%lx x%x x%x\n", 4998 vport->port_state, tmo, 4999 (unsigned long)&vport->fc_disctmo, 5000 atomic_read(&vport->fc_plogi_cnt), 5001 atomic_read(&vport->fc_adisc_cnt)); 5002 5003 return; 5004 } 5005 5006 /* 5007 * Cancel rescue timer for Discovery / RSCN handling 5008 */ 5009 int 5010 lpfc_can_disctmo(struct lpfc_vport *vport) 5011 { 5012 unsigned long iflags; 5013 5014 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, 5015 "can disc timer: state:x%x rtry:x%x flg:x%x", 5016 vport->port_state, vport->fc_ns_retry, vport->fc_flag); 5017 5018 /* Turn off discovery timer if its running */ 5019 if (test_bit(FC_DISC_TMO, &vport->fc_flag) || 5020 timer_pending(&vport->fc_disctmo)) { 5021 clear_bit(FC_DISC_TMO, &vport->fc_flag); 5022 del_timer_sync(&vport->fc_disctmo); 5023 spin_lock_irqsave(&vport->work_port_lock, iflags); 5024 vport->work_port_events &= ~WORKER_DISC_TMO; 5025 spin_unlock_irqrestore(&vport->work_port_lock, iflags); 5026 } 5027 5028 /* Cancel Discovery Timer state <hba_state> */ 5029 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, 5030 "0248 Cancel Discovery Timer state x%x " 5031 "Data: x%lx x%x x%x\n", 5032 vport->port_state, vport->fc_flag, 5033 atomic_read(&vport->fc_plogi_cnt), 5034 atomic_read(&vport->fc_adisc_cnt)); 5035 return 0; 5036 } 5037 5038 /* 5039 * Check specified ring for outstanding IOCB on the SLI queue 5040 * Return true if iocb matches the specified nport 5041 */ 5042 int 5043 lpfc_check_sli_ndlp(struct lpfc_hba *phba, 5044 struct lpfc_sli_ring *pring, 5045 struct lpfc_iocbq *iocb, 5046 struct lpfc_nodelist *ndlp) 5047 { 5048 struct lpfc_vport *vport = ndlp->vport; 5049 u8 ulp_command; 5050 u16 ulp_context; 5051 u32 remote_id; 5052 5053 if (iocb->vport != vport) 5054 return 0; 5055 5056 ulp_command = get_job_cmnd(phba, iocb); 5057 ulp_context = get_job_ulpcontext(phba, iocb); 5058 remote_id = get_job_els_rsp64_did(phba, iocb); 5059 5060 if (pring->ringno == LPFC_ELS_RING) { 5061 switch (ulp_command) { 5062 case CMD_GEN_REQUEST64_CR: 5063 if (iocb->ndlp == ndlp) 5064 return 1; 5065 fallthrough; 5066 case CMD_ELS_REQUEST64_CR: 5067 if (remote_id == ndlp->nlp_DID) 5068 return 1; 5069 fallthrough; 5070 case CMD_XMIT_ELS_RSP64_CX: 5071 if (iocb->ndlp == ndlp) 5072 return 1; 5073 } 5074 } else if (pring->ringno == LPFC_FCP_RING) { 5075 /* Skip match check if waiting to relogin to FCP target */ 5076 if ((ndlp->nlp_type & NLP_FCP_TARGET) && 5077 (ndlp->nlp_flag & NLP_DELAY_TMO)) { 5078 return 0; 5079 } 5080 if (ulp_context == ndlp->nlp_rpi) 5081 return 1; 5082 } 5083 return 0; 5084 } 5085 5086 static void 5087 __lpfc_dequeue_nport_iocbs(struct lpfc_hba *phba, 5088 struct lpfc_nodelist *ndlp, struct lpfc_sli_ring *pring, 5089 struct list_head *dequeue_list) 5090 { 5091 struct lpfc_iocbq *iocb, *next_iocb; 5092 5093 list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) { 5094 /* Check to see if iocb matches the nport */ 5095 if (lpfc_check_sli_ndlp(phba, pring, iocb, ndlp)) 5096 /* match, dequeue */ 5097 list_move_tail(&iocb->list, dequeue_list); 5098 } 5099 } 5100 5101 static void 5102 lpfc_sli3_dequeue_nport_iocbs(struct lpfc_hba *phba, 5103 struct lpfc_nodelist *ndlp, struct list_head *dequeue_list) 5104 { 5105 struct lpfc_sli *psli = &phba->sli; 5106 uint32_t i; 5107 5108 spin_lock_irq(&phba->hbalock); 5109 for (i = 0; i < psli->num_rings; i++) 5110 __lpfc_dequeue_nport_iocbs(phba, ndlp, &psli->sli3_ring[i], 5111 dequeue_list); 5112 spin_unlock_irq(&phba->hbalock); 5113 } 5114 5115 static void 5116 lpfc_sli4_dequeue_nport_iocbs(struct lpfc_hba *phba, 5117 struct lpfc_nodelist *ndlp, struct list_head *dequeue_list) 5118 { 5119 struct lpfc_sli_ring *pring; 5120 struct lpfc_queue *qp = NULL; 5121 5122 spin_lock_irq(&phba->hbalock); 5123 list_for_each_entry(qp, &phba->sli4_hba.lpfc_wq_list, wq_list) { 5124 pring = qp->pring; 5125 if (!pring) 5126 continue; 5127 spin_lock(&pring->ring_lock); 5128 __lpfc_dequeue_nport_iocbs(phba, ndlp, pring, dequeue_list); 5129 spin_unlock(&pring->ring_lock); 5130 } 5131 spin_unlock_irq(&phba->hbalock); 5132 } 5133 5134 /* 5135 * Free resources / clean up outstanding I/Os 5136 * associated with nlp_rpi in the LPFC_NODELIST entry. 5137 */ 5138 static int 5139 lpfc_no_rpi(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp) 5140 { 5141 LIST_HEAD(completions); 5142 5143 lpfc_fabric_abort_nport(ndlp); 5144 5145 /* 5146 * Everything that matches on txcmplq will be returned 5147 * by firmware with a no rpi error. 5148 */ 5149 if (ndlp->nlp_flag & NLP_RPI_REGISTERED) { 5150 if (phba->sli_rev != LPFC_SLI_REV4) 5151 lpfc_sli3_dequeue_nport_iocbs(phba, ndlp, &completions); 5152 else 5153 lpfc_sli4_dequeue_nport_iocbs(phba, ndlp, &completions); 5154 } 5155 5156 /* Cancel all the IOCBs from the completions list */ 5157 lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT, 5158 IOERR_SLI_ABORTED); 5159 5160 return 0; 5161 } 5162 5163 /** 5164 * lpfc_nlp_logo_unreg - Unreg mailbox completion handler before LOGO 5165 * @phba: Pointer to HBA context object. 5166 * @pmb: Pointer to mailbox object. 5167 * 5168 * This function will issue an ELS LOGO command after completing 5169 * the UNREG_RPI. 5170 **/ 5171 static void 5172 lpfc_nlp_logo_unreg(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 5173 { 5174 struct lpfc_vport *vport = pmb->vport; 5175 struct lpfc_nodelist *ndlp; 5176 5177 ndlp = (struct lpfc_nodelist *)(pmb->ctx_ndlp); 5178 if (!ndlp) 5179 return; 5180 lpfc_issue_els_logo(vport, ndlp, 0); 5181 5182 /* Check to see if there are any deferred events to process */ 5183 if ((ndlp->nlp_flag & NLP_UNREG_INP) && 5184 (ndlp->nlp_defer_did != NLP_EVT_NOTHING_PENDING)) { 5185 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, 5186 "1434 UNREG cmpl deferred logo x%x " 5187 "on NPort x%x Data: x%x x%px\n", 5188 ndlp->nlp_rpi, ndlp->nlp_DID, 5189 ndlp->nlp_defer_did, ndlp); 5190 5191 ndlp->nlp_flag &= ~NLP_UNREG_INP; 5192 ndlp->nlp_defer_did = NLP_EVT_NOTHING_PENDING; 5193 lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0); 5194 } else { 5195 /* NLP_RELEASE_RPI is only set for SLI4 ports. */ 5196 if (ndlp->nlp_flag & NLP_RELEASE_RPI) { 5197 lpfc_sli4_free_rpi(vport->phba, ndlp->nlp_rpi); 5198 spin_lock_irq(&ndlp->lock); 5199 ndlp->nlp_flag &= ~NLP_RELEASE_RPI; 5200 ndlp->nlp_rpi = LPFC_RPI_ALLOC_ERROR; 5201 spin_unlock_irq(&ndlp->lock); 5202 } 5203 spin_lock_irq(&ndlp->lock); 5204 ndlp->nlp_flag &= ~NLP_UNREG_INP; 5205 spin_unlock_irq(&ndlp->lock); 5206 } 5207 5208 /* The node has an outstanding reference for the unreg. Now 5209 * that the LOGO action and cleanup are finished, release 5210 * resources. 5211 */ 5212 lpfc_nlp_put(ndlp); 5213 mempool_free(pmb, phba->mbox_mem_pool); 5214 } 5215 5216 /* 5217 * Sets the mailbox completion handler to be used for the 5218 * unreg_rpi command. The handler varies based on the state of 5219 * the port and what will be happening to the rpi next. 5220 */ 5221 static void 5222 lpfc_set_unreg_login_mbx_cmpl(struct lpfc_hba *phba, struct lpfc_vport *vport, 5223 struct lpfc_nodelist *ndlp, LPFC_MBOXQ_t *mbox) 5224 { 5225 unsigned long iflags; 5226 5227 /* Driver always gets a reference on the mailbox job 5228 * in support of async jobs. 5229 */ 5230 mbox->ctx_ndlp = lpfc_nlp_get(ndlp); 5231 if (!mbox->ctx_ndlp) 5232 return; 5233 5234 if (ndlp->nlp_flag & NLP_ISSUE_LOGO) { 5235 mbox->mbox_cmpl = lpfc_nlp_logo_unreg; 5236 5237 } else if (phba->sli_rev == LPFC_SLI_REV4 && 5238 !test_bit(FC_UNLOADING, &vport->load_flag) && 5239 (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) >= 5240 LPFC_SLI_INTF_IF_TYPE_2) && 5241 (kref_read(&ndlp->kref) > 0)) { 5242 mbox->mbox_cmpl = lpfc_sli4_unreg_rpi_cmpl_clr; 5243 } else { 5244 if (test_bit(FC_UNLOADING, &vport->load_flag)) { 5245 if (phba->sli_rev == LPFC_SLI_REV4) { 5246 spin_lock_irqsave(&ndlp->lock, iflags); 5247 ndlp->nlp_flag |= NLP_RELEASE_RPI; 5248 spin_unlock_irqrestore(&ndlp->lock, iflags); 5249 } 5250 } 5251 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl; 5252 } 5253 } 5254 5255 /* 5256 * Free rpi associated with LPFC_NODELIST entry. 5257 * This routine is called from lpfc_freenode(), when we are removing 5258 * a LPFC_NODELIST entry. It is also called if the driver initiates a 5259 * LOGO that completes successfully, and we are waiting to PLOGI back 5260 * to the remote NPort. In addition, it is called after we receive 5261 * and unsolicated ELS cmd, send back a rsp, the rsp completes and 5262 * we are waiting to PLOGI back to the remote NPort. 5263 */ 5264 int 5265 lpfc_unreg_rpi(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) 5266 { 5267 struct lpfc_hba *phba = vport->phba; 5268 LPFC_MBOXQ_t *mbox; 5269 int rc, acc_plogi = 1; 5270 uint16_t rpi; 5271 5272 if (ndlp->nlp_flag & NLP_RPI_REGISTERED || 5273 ndlp->nlp_flag & NLP_REG_LOGIN_SEND) { 5274 if (ndlp->nlp_flag & NLP_REG_LOGIN_SEND) 5275 lpfc_printf_vlog(vport, KERN_INFO, 5276 LOG_NODE | LOG_DISCOVERY, 5277 "3366 RPI x%x needs to be " 5278 "unregistered nlp_flag x%x " 5279 "did x%x\n", 5280 ndlp->nlp_rpi, ndlp->nlp_flag, 5281 ndlp->nlp_DID); 5282 5283 /* If there is already an UNREG in progress for this ndlp, 5284 * no need to queue up another one. 5285 */ 5286 if (ndlp->nlp_flag & NLP_UNREG_INP) { 5287 lpfc_printf_vlog(vport, KERN_INFO, 5288 LOG_NODE | LOG_DISCOVERY, 5289 "1436 unreg_rpi SKIP UNREG x%x on " 5290 "NPort x%x deferred x%x flg x%x " 5291 "Data: x%px\n", 5292 ndlp->nlp_rpi, ndlp->nlp_DID, 5293 ndlp->nlp_defer_did, 5294 ndlp->nlp_flag, ndlp); 5295 goto out; 5296 } 5297 5298 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 5299 if (mbox) { 5300 /* SLI4 ports require the physical rpi value. */ 5301 rpi = ndlp->nlp_rpi; 5302 if (phba->sli_rev == LPFC_SLI_REV4) 5303 rpi = phba->sli4_hba.rpi_ids[ndlp->nlp_rpi]; 5304 5305 lpfc_unreg_login(phba, vport->vpi, rpi, mbox); 5306 mbox->vport = vport; 5307 lpfc_set_unreg_login_mbx_cmpl(phba, vport, ndlp, mbox); 5308 if (!mbox->ctx_ndlp) { 5309 mempool_free(mbox, phba->mbox_mem_pool); 5310 return 1; 5311 } 5312 5313 if (mbox->mbox_cmpl == lpfc_sli4_unreg_rpi_cmpl_clr) 5314 /* 5315 * accept PLOGIs after unreg_rpi_cmpl 5316 */ 5317 acc_plogi = 0; 5318 if (((ndlp->nlp_DID & Fabric_DID_MASK) != 5319 Fabric_DID_MASK) && 5320 (!test_bit(FC_OFFLINE_MODE, &vport->fc_flag))) 5321 ndlp->nlp_flag |= NLP_UNREG_INP; 5322 5323 lpfc_printf_vlog(vport, KERN_INFO, 5324 LOG_NODE | LOG_DISCOVERY, 5325 "1433 unreg_rpi UNREG x%x on " 5326 "NPort x%x deferred flg x%x " 5327 "Data:x%px\n", 5328 ndlp->nlp_rpi, ndlp->nlp_DID, 5329 ndlp->nlp_flag, ndlp); 5330 5331 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT); 5332 if (rc == MBX_NOT_FINISHED) { 5333 ndlp->nlp_flag &= ~NLP_UNREG_INP; 5334 mempool_free(mbox, phba->mbox_mem_pool); 5335 acc_plogi = 1; 5336 lpfc_nlp_put(ndlp); 5337 } 5338 } else { 5339 lpfc_printf_vlog(vport, KERN_INFO, 5340 LOG_NODE | LOG_DISCOVERY, 5341 "1444 Failed to allocate mempool " 5342 "unreg_rpi UNREG x%x, " 5343 "DID x%x, flag x%x, " 5344 "ndlp x%px\n", 5345 ndlp->nlp_rpi, ndlp->nlp_DID, 5346 ndlp->nlp_flag, ndlp); 5347 5348 /* Because mempool_alloc failed, we 5349 * will issue a LOGO here and keep the rpi alive if 5350 * not unloading. 5351 */ 5352 if (!test_bit(FC_UNLOADING, &vport->load_flag)) { 5353 ndlp->nlp_flag &= ~NLP_UNREG_INP; 5354 lpfc_issue_els_logo(vport, ndlp, 0); 5355 ndlp->nlp_prev_state = ndlp->nlp_state; 5356 lpfc_nlp_set_state(vport, ndlp, 5357 NLP_STE_NPR_NODE); 5358 } 5359 5360 return 1; 5361 } 5362 lpfc_no_rpi(phba, ndlp); 5363 out: 5364 if (phba->sli_rev != LPFC_SLI_REV4) 5365 ndlp->nlp_rpi = 0; 5366 ndlp->nlp_flag &= ~NLP_RPI_REGISTERED; 5367 ndlp->nlp_flag &= ~NLP_NPR_ADISC; 5368 if (acc_plogi) 5369 ndlp->nlp_flag &= ~NLP_LOGO_ACC; 5370 return 1; 5371 } 5372 ndlp->nlp_flag &= ~NLP_LOGO_ACC; 5373 return 0; 5374 } 5375 5376 /** 5377 * lpfc_unreg_hba_rpis - Unregister rpis registered to the hba. 5378 * @phba: pointer to lpfc hba data structure. 5379 * 5380 * This routine is invoked to unregister all the currently registered RPIs 5381 * to the HBA. 5382 **/ 5383 void 5384 lpfc_unreg_hba_rpis(struct lpfc_hba *phba) 5385 { 5386 struct lpfc_vport **vports; 5387 struct lpfc_nodelist *ndlp; 5388 int i; 5389 unsigned long iflags; 5390 5391 vports = lpfc_create_vport_work_array(phba); 5392 if (!vports) { 5393 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 5394 "2884 Vport array allocation failed \n"); 5395 return; 5396 } 5397 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) { 5398 spin_lock_irqsave(&vports[i]->fc_nodes_list_lock, iflags); 5399 list_for_each_entry(ndlp, &vports[i]->fc_nodes, nlp_listp) { 5400 if (ndlp->nlp_flag & NLP_RPI_REGISTERED) { 5401 /* The mempool_alloc might sleep */ 5402 spin_unlock_irqrestore(&vports[i]->fc_nodes_list_lock, 5403 iflags); 5404 lpfc_unreg_rpi(vports[i], ndlp); 5405 spin_lock_irqsave(&vports[i]->fc_nodes_list_lock, 5406 iflags); 5407 } 5408 } 5409 spin_unlock_irqrestore(&vports[i]->fc_nodes_list_lock, iflags); 5410 } 5411 lpfc_destroy_vport_work_array(phba, vports); 5412 } 5413 5414 void 5415 lpfc_unreg_all_rpis(struct lpfc_vport *vport) 5416 { 5417 struct lpfc_hba *phba = vport->phba; 5418 LPFC_MBOXQ_t *mbox; 5419 int rc; 5420 5421 if (phba->sli_rev == LPFC_SLI_REV4) { 5422 lpfc_sli4_unreg_all_rpis(vport); 5423 return; 5424 } 5425 5426 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 5427 if (mbox) { 5428 lpfc_unreg_login(phba, vport->vpi, LPFC_UNREG_ALL_RPIS_VPORT, 5429 mbox); 5430 mbox->vport = vport; 5431 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl; 5432 mbox->ctx_ndlp = NULL; 5433 rc = lpfc_sli_issue_mbox_wait(phba, mbox, LPFC_MBOX_TMO); 5434 if (rc != MBX_TIMEOUT) 5435 mempool_free(mbox, phba->mbox_mem_pool); 5436 5437 if ((rc == MBX_TIMEOUT) || (rc == MBX_NOT_FINISHED)) 5438 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 5439 "1836 Could not issue " 5440 "unreg_login(all_rpis) status %d\n", 5441 rc); 5442 } 5443 } 5444 5445 void 5446 lpfc_unreg_default_rpis(struct lpfc_vport *vport) 5447 { 5448 struct lpfc_hba *phba = vport->phba; 5449 LPFC_MBOXQ_t *mbox; 5450 int rc; 5451 5452 /* Unreg DID is an SLI3 operation. */ 5453 if (phba->sli_rev > LPFC_SLI_REV3) 5454 return; 5455 5456 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 5457 if (mbox) { 5458 lpfc_unreg_did(phba, vport->vpi, LPFC_UNREG_ALL_DFLT_RPIS, 5459 mbox); 5460 mbox->vport = vport; 5461 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl; 5462 mbox->ctx_ndlp = NULL; 5463 rc = lpfc_sli_issue_mbox_wait(phba, mbox, LPFC_MBOX_TMO); 5464 if (rc != MBX_TIMEOUT) 5465 mempool_free(mbox, phba->mbox_mem_pool); 5466 5467 if ((rc == MBX_TIMEOUT) || (rc == MBX_NOT_FINISHED)) 5468 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 5469 "1815 Could not issue " 5470 "unreg_did (default rpis) status %d\n", 5471 rc); 5472 } 5473 } 5474 5475 /* 5476 * Free resources associated with LPFC_NODELIST entry 5477 * so it can be freed. 5478 */ 5479 static int 5480 lpfc_cleanup_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) 5481 { 5482 struct lpfc_hba *phba = vport->phba; 5483 LPFC_MBOXQ_t *mb, *nextmb; 5484 5485 /* Cleanup node for NPort <nlp_DID> */ 5486 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE, 5487 "0900 Cleanup node for NPort x%x " 5488 "Data: x%x x%x x%x\n", 5489 ndlp->nlp_DID, ndlp->nlp_flag, 5490 ndlp->nlp_state, ndlp->nlp_rpi); 5491 lpfc_dequeue_node(vport, ndlp); 5492 5493 /* Don't need to clean up REG_LOGIN64 cmds for Default RPI cleanup */ 5494 5495 /* cleanup any ndlp on mbox q waiting for reglogin cmpl */ 5496 if ((mb = phba->sli.mbox_active)) { 5497 if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) && 5498 !(mb->mbox_flag & LPFC_MBX_IMED_UNREG) && 5499 (ndlp == (struct lpfc_nodelist *)mb->ctx_ndlp)) { 5500 mb->ctx_ndlp = NULL; 5501 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl; 5502 } 5503 } 5504 5505 spin_lock_irq(&phba->hbalock); 5506 /* Cleanup REG_LOGIN completions which are not yet processed */ 5507 list_for_each_entry(mb, &phba->sli.mboxq_cmpl, list) { 5508 if ((mb->u.mb.mbxCommand != MBX_REG_LOGIN64) || 5509 (mb->mbox_flag & LPFC_MBX_IMED_UNREG) || 5510 (ndlp != (struct lpfc_nodelist *)mb->ctx_ndlp)) 5511 continue; 5512 5513 mb->ctx_ndlp = NULL; 5514 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl; 5515 } 5516 5517 list_for_each_entry_safe(mb, nextmb, &phba->sli.mboxq, list) { 5518 if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) && 5519 !(mb->mbox_flag & LPFC_MBX_IMED_UNREG) && 5520 (ndlp == (struct lpfc_nodelist *)mb->ctx_ndlp)) { 5521 list_del(&mb->list); 5522 lpfc_mbox_rsrc_cleanup(phba, mb, MBOX_THD_LOCKED); 5523 5524 /* Don't invoke lpfc_nlp_put. The driver is in 5525 * lpfc_nlp_release context. 5526 */ 5527 } 5528 } 5529 spin_unlock_irq(&phba->hbalock); 5530 5531 lpfc_els_abort(phba, ndlp); 5532 5533 spin_lock_irq(&ndlp->lock); 5534 ndlp->nlp_flag &= ~NLP_DELAY_TMO; 5535 spin_unlock_irq(&ndlp->lock); 5536 5537 ndlp->nlp_last_elscmd = 0; 5538 del_timer_sync(&ndlp->nlp_delayfunc); 5539 5540 list_del_init(&ndlp->els_retry_evt.evt_listp); 5541 list_del_init(&ndlp->dev_loss_evt.evt_listp); 5542 list_del_init(&ndlp->recovery_evt.evt_listp); 5543 lpfc_cleanup_vports_rrqs(vport, ndlp); 5544 5545 if (phba->sli_rev == LPFC_SLI_REV4) 5546 ndlp->nlp_flag |= NLP_RELEASE_RPI; 5547 5548 return 0; 5549 } 5550 5551 static int 5552 lpfc_matchdid(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 5553 uint32_t did) 5554 { 5555 D_ID mydid, ndlpdid, matchdid; 5556 5557 if (did == Bcast_DID) 5558 return 0; 5559 5560 /* First check for Direct match */ 5561 if (ndlp->nlp_DID == did) 5562 return 1; 5563 5564 /* Next check for area/domain identically equals 0 match */ 5565 mydid.un.word = vport->fc_myDID; 5566 if ((mydid.un.b.domain == 0) && (mydid.un.b.area == 0)) { 5567 return 0; 5568 } 5569 5570 matchdid.un.word = did; 5571 ndlpdid.un.word = ndlp->nlp_DID; 5572 if (matchdid.un.b.id == ndlpdid.un.b.id) { 5573 if ((mydid.un.b.domain == matchdid.un.b.domain) && 5574 (mydid.un.b.area == matchdid.un.b.area)) { 5575 /* This code is supposed to match the ID 5576 * for a private loop device that is 5577 * connect to fl_port. But we need to 5578 * check that the port did not just go 5579 * from pt2pt to fabric or we could end 5580 * up matching ndlp->nlp_DID 000001 to 5581 * fabric DID 0x20101 5582 */ 5583 if ((ndlpdid.un.b.domain == 0) && 5584 (ndlpdid.un.b.area == 0)) { 5585 if (ndlpdid.un.b.id && 5586 vport->phba->fc_topology == 5587 LPFC_TOPOLOGY_LOOP) 5588 return 1; 5589 } 5590 return 0; 5591 } 5592 5593 matchdid.un.word = ndlp->nlp_DID; 5594 if ((mydid.un.b.domain == ndlpdid.un.b.domain) && 5595 (mydid.un.b.area == ndlpdid.un.b.area)) { 5596 if ((matchdid.un.b.domain == 0) && 5597 (matchdid.un.b.area == 0)) { 5598 if (matchdid.un.b.id) 5599 return 1; 5600 } 5601 } 5602 } 5603 return 0; 5604 } 5605 5606 /* Search for a nodelist entry */ 5607 static struct lpfc_nodelist * 5608 __lpfc_findnode_did(struct lpfc_vport *vport, uint32_t did) 5609 { 5610 struct lpfc_nodelist *ndlp; 5611 uint32_t data1; 5612 5613 list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) { 5614 if (lpfc_matchdid(vport, ndlp, did)) { 5615 data1 = (((uint32_t)ndlp->nlp_state << 24) | 5616 ((uint32_t)ndlp->nlp_xri << 16) | 5617 ((uint32_t)ndlp->nlp_type << 8) 5618 ); 5619 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE_VERBOSE, 5620 "0929 FIND node DID " 5621 "Data: x%px x%x x%x x%x x%x x%px\n", 5622 ndlp, ndlp->nlp_DID, 5623 ndlp->nlp_flag, data1, ndlp->nlp_rpi, 5624 ndlp->active_rrqs_xri_bitmap); 5625 return ndlp; 5626 } 5627 } 5628 5629 /* FIND node did <did> NOT FOUND */ 5630 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE, 5631 "0932 FIND node did x%x NOT FOUND.\n", did); 5632 return NULL; 5633 } 5634 5635 struct lpfc_nodelist * 5636 lpfc_findnode_did(struct lpfc_vport *vport, uint32_t did) 5637 { 5638 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 5639 struct lpfc_nodelist *ndlp; 5640 unsigned long iflags; 5641 5642 spin_lock_irqsave(shost->host_lock, iflags); 5643 ndlp = __lpfc_findnode_did(vport, did); 5644 spin_unlock_irqrestore(shost->host_lock, iflags); 5645 return ndlp; 5646 } 5647 5648 struct lpfc_nodelist * 5649 lpfc_findnode_mapped(struct lpfc_vport *vport) 5650 { 5651 struct lpfc_nodelist *ndlp; 5652 uint32_t data1; 5653 unsigned long iflags; 5654 5655 spin_lock_irqsave(&vport->fc_nodes_list_lock, iflags); 5656 5657 list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) { 5658 if (ndlp->nlp_state == NLP_STE_UNMAPPED_NODE || 5659 ndlp->nlp_state == NLP_STE_MAPPED_NODE) { 5660 data1 = (((uint32_t)ndlp->nlp_state << 24) | 5661 ((uint32_t)ndlp->nlp_xri << 16) | 5662 ((uint32_t)ndlp->nlp_type << 8) | 5663 ((uint32_t)ndlp->nlp_rpi & 0xff)); 5664 spin_unlock_irqrestore(&vport->fc_nodes_list_lock, 5665 iflags); 5666 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE_VERBOSE, 5667 "2025 FIND node DID MAPPED " 5668 "Data: x%px x%x x%x x%x x%px\n", 5669 ndlp, ndlp->nlp_DID, 5670 ndlp->nlp_flag, data1, 5671 ndlp->active_rrqs_xri_bitmap); 5672 return ndlp; 5673 } 5674 } 5675 spin_unlock_irqrestore(&vport->fc_nodes_list_lock, iflags); 5676 5677 /* FIND node did <did> NOT FOUND */ 5678 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE, 5679 "2026 FIND mapped did NOT FOUND.\n"); 5680 return NULL; 5681 } 5682 5683 struct lpfc_nodelist * 5684 lpfc_setup_disc_node(struct lpfc_vport *vport, uint32_t did) 5685 { 5686 struct lpfc_nodelist *ndlp; 5687 5688 ndlp = lpfc_findnode_did(vport, did); 5689 if (!ndlp) { 5690 if (vport->phba->nvmet_support) 5691 return NULL; 5692 if (test_bit(FC_RSCN_MODE, &vport->fc_flag) && 5693 lpfc_rscn_payload_check(vport, did) == 0) 5694 return NULL; 5695 ndlp = lpfc_nlp_init(vport, did); 5696 if (!ndlp) 5697 return NULL; 5698 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE); 5699 5700 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, 5701 "6453 Setup New Node 2B_DISC x%x " 5702 "Data:x%x x%x x%lx\n", 5703 ndlp->nlp_DID, ndlp->nlp_flag, 5704 ndlp->nlp_state, vport->fc_flag); 5705 5706 spin_lock_irq(&ndlp->lock); 5707 ndlp->nlp_flag |= NLP_NPR_2B_DISC; 5708 spin_unlock_irq(&ndlp->lock); 5709 return ndlp; 5710 } 5711 5712 /* The NVME Target does not want to actively manage an rport. 5713 * The goal is to allow the target to reset its state and clear 5714 * pending IO in preparation for the initiator to recover. 5715 */ 5716 if (test_bit(FC_RSCN_MODE, &vport->fc_flag) && 5717 !test_bit(FC_NDISC_ACTIVE, &vport->fc_flag)) { 5718 if (lpfc_rscn_payload_check(vport, did)) { 5719 5720 /* Since this node is marked for discovery, 5721 * delay timeout is not needed. 5722 */ 5723 lpfc_cancel_retry_delay_tmo(vport, ndlp); 5724 5725 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, 5726 "6455 Setup RSCN Node 2B_DISC x%x " 5727 "Data:x%x x%x x%lx\n", 5728 ndlp->nlp_DID, ndlp->nlp_flag, 5729 ndlp->nlp_state, vport->fc_flag); 5730 5731 /* NVME Target mode waits until rport is known to be 5732 * impacted by the RSCN before it transitions. No 5733 * active management - just go to NPR provided the 5734 * node had a valid login. 5735 */ 5736 if (vport->phba->nvmet_support) 5737 return ndlp; 5738 5739 if (ndlp->nlp_state > NLP_STE_UNUSED_NODE && 5740 ndlp->nlp_state < NLP_STE_PRLI_ISSUE) { 5741 lpfc_disc_state_machine(vport, ndlp, NULL, 5742 NLP_EVT_DEVICE_RECOVERY); 5743 } 5744 5745 spin_lock_irq(&ndlp->lock); 5746 ndlp->nlp_flag |= NLP_NPR_2B_DISC; 5747 spin_unlock_irq(&ndlp->lock); 5748 } else { 5749 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, 5750 "6456 Skip Setup RSCN Node x%x " 5751 "Data:x%x x%x x%lx\n", 5752 ndlp->nlp_DID, ndlp->nlp_flag, 5753 ndlp->nlp_state, vport->fc_flag); 5754 ndlp = NULL; 5755 } 5756 } else { 5757 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, 5758 "6457 Setup Active Node 2B_DISC x%x " 5759 "Data:x%x x%x x%lx\n", 5760 ndlp->nlp_DID, ndlp->nlp_flag, 5761 ndlp->nlp_state, vport->fc_flag); 5762 5763 /* If the initiator received a PLOGI from this NPort or if the 5764 * initiator is already in the process of discovery on it, 5765 * there's no need to try to discover it again. 5766 */ 5767 if (ndlp->nlp_state == NLP_STE_ADISC_ISSUE || 5768 ndlp->nlp_state == NLP_STE_PLOGI_ISSUE || 5769 (!vport->phba->nvmet_support && 5770 ndlp->nlp_flag & NLP_RCV_PLOGI)) 5771 return NULL; 5772 5773 if (vport->phba->nvmet_support) 5774 return ndlp; 5775 5776 /* Moving to NPR state clears unsolicited flags and 5777 * allows for rediscovery 5778 */ 5779 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE); 5780 5781 spin_lock_irq(&ndlp->lock); 5782 ndlp->nlp_flag |= NLP_NPR_2B_DISC; 5783 spin_unlock_irq(&ndlp->lock); 5784 } 5785 return ndlp; 5786 } 5787 5788 /* Build a list of nodes to discover based on the loopmap */ 5789 void 5790 lpfc_disc_list_loopmap(struct lpfc_vport *vport) 5791 { 5792 struct lpfc_hba *phba = vport->phba; 5793 int j; 5794 uint32_t alpa, index; 5795 5796 if (!lpfc_is_link_up(phba)) 5797 return; 5798 5799 if (phba->fc_topology != LPFC_TOPOLOGY_LOOP) 5800 return; 5801 5802 /* Check for loop map present or not */ 5803 if (phba->alpa_map[0]) { 5804 for (j = 1; j <= phba->alpa_map[0]; j++) { 5805 alpa = phba->alpa_map[j]; 5806 if (((vport->fc_myDID & 0xff) == alpa) || (alpa == 0)) 5807 continue; 5808 lpfc_setup_disc_node(vport, alpa); 5809 } 5810 } else { 5811 /* No alpamap, so try all alpa's */ 5812 for (j = 0; j < FC_MAXLOOP; j++) { 5813 /* If cfg_scan_down is set, start from highest 5814 * ALPA (0xef) to lowest (0x1). 5815 */ 5816 if (vport->cfg_scan_down) 5817 index = j; 5818 else 5819 index = FC_MAXLOOP - j - 1; 5820 alpa = lpfcAlpaArray[index]; 5821 if ((vport->fc_myDID & 0xff) == alpa) 5822 continue; 5823 lpfc_setup_disc_node(vport, alpa); 5824 } 5825 } 5826 return; 5827 } 5828 5829 /* SLI3 only */ 5830 void 5831 lpfc_issue_clear_la(struct lpfc_hba *phba, struct lpfc_vport *vport) 5832 { 5833 LPFC_MBOXQ_t *mbox; 5834 struct lpfc_sli *psli = &phba->sli; 5835 struct lpfc_sli_ring *extra_ring = &psli->sli3_ring[LPFC_EXTRA_RING]; 5836 struct lpfc_sli_ring *fcp_ring = &psli->sli3_ring[LPFC_FCP_RING]; 5837 int rc; 5838 5839 /* 5840 * if it's not a physical port or if we already send 5841 * clear_la then don't send it. 5842 */ 5843 if ((phba->link_state >= LPFC_CLEAR_LA) || 5844 (vport->port_type != LPFC_PHYSICAL_PORT) || 5845 (phba->sli_rev == LPFC_SLI_REV4)) 5846 return; 5847 5848 /* Link up discovery */ 5849 if ((mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL)) != NULL) { 5850 phba->link_state = LPFC_CLEAR_LA; 5851 lpfc_clear_la(phba, mbox); 5852 mbox->mbox_cmpl = lpfc_mbx_cmpl_clear_la; 5853 mbox->vport = vport; 5854 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT); 5855 if (rc == MBX_NOT_FINISHED) { 5856 mempool_free(mbox, phba->mbox_mem_pool); 5857 lpfc_disc_flush_list(vport); 5858 extra_ring->flag &= ~LPFC_STOP_IOCB_EVENT; 5859 fcp_ring->flag &= ~LPFC_STOP_IOCB_EVENT; 5860 phba->link_state = LPFC_HBA_ERROR; 5861 } 5862 } 5863 } 5864 5865 /* Reg_vpi to tell firmware to resume normal operations */ 5866 void 5867 lpfc_issue_reg_vpi(struct lpfc_hba *phba, struct lpfc_vport *vport) 5868 { 5869 LPFC_MBOXQ_t *regvpimbox; 5870 5871 regvpimbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 5872 if (regvpimbox) { 5873 lpfc_reg_vpi(vport, regvpimbox); 5874 regvpimbox->mbox_cmpl = lpfc_mbx_cmpl_reg_vpi; 5875 regvpimbox->vport = vport; 5876 if (lpfc_sli_issue_mbox(phba, regvpimbox, MBX_NOWAIT) 5877 == MBX_NOT_FINISHED) { 5878 mempool_free(regvpimbox, phba->mbox_mem_pool); 5879 } 5880 } 5881 } 5882 5883 /* Start Link up / RSCN discovery on NPR nodes */ 5884 void 5885 lpfc_disc_start(struct lpfc_vport *vport) 5886 { 5887 struct lpfc_hba *phba = vport->phba; 5888 uint32_t num_sent; 5889 uint32_t clear_la_pending; 5890 5891 if (!lpfc_is_link_up(phba)) { 5892 lpfc_printf_vlog(vport, KERN_INFO, LOG_SLI, 5893 "3315 Link is not up %x\n", 5894 phba->link_state); 5895 return; 5896 } 5897 5898 if (phba->link_state == LPFC_CLEAR_LA) 5899 clear_la_pending = 1; 5900 else 5901 clear_la_pending = 0; 5902 5903 if (vport->port_state < LPFC_VPORT_READY) 5904 vport->port_state = LPFC_DISC_AUTH; 5905 5906 lpfc_set_disctmo(vport); 5907 5908 vport->fc_prevDID = vport->fc_myDID; 5909 vport->num_disc_nodes = 0; 5910 5911 /* Start Discovery state <hba_state> */ 5912 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, 5913 "0202 Start Discovery port state x%x " 5914 "flg x%lx Data: x%x x%x x%x\n", 5915 vport->port_state, vport->fc_flag, 5916 atomic_read(&vport->fc_plogi_cnt), 5917 atomic_read(&vport->fc_adisc_cnt), 5918 atomic_read(&vport->fc_npr_cnt)); 5919 5920 /* First do ADISCs - if any */ 5921 num_sent = lpfc_els_disc_adisc(vport); 5922 5923 if (num_sent) 5924 return; 5925 5926 /* Register the VPI for SLI3, NPIV only. */ 5927 if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) && 5928 !test_bit(FC_PT2PT, &vport->fc_flag) && 5929 !test_bit(FC_RSCN_MODE, &vport->fc_flag) && 5930 (phba->sli_rev < LPFC_SLI_REV4)) { 5931 lpfc_issue_clear_la(phba, vport); 5932 lpfc_issue_reg_vpi(phba, vport); 5933 return; 5934 } 5935 5936 /* 5937 * For SLI2, we need to set port_state to READY and continue 5938 * discovery. 5939 */ 5940 if (vport->port_state < LPFC_VPORT_READY && !clear_la_pending) { 5941 /* If we get here, there is nothing to ADISC */ 5942 lpfc_issue_clear_la(phba, vport); 5943 5944 if (!test_bit(FC_ABORT_DISCOVERY, &vport->fc_flag)) { 5945 vport->num_disc_nodes = 0; 5946 /* go thru NPR nodes and issue ELS PLOGIs */ 5947 if (atomic_read(&vport->fc_npr_cnt)) 5948 lpfc_els_disc_plogi(vport); 5949 5950 if (!vport->num_disc_nodes) { 5951 clear_bit(FC_NDISC_ACTIVE, &vport->fc_flag); 5952 lpfc_can_disctmo(vport); 5953 } 5954 } 5955 vport->port_state = LPFC_VPORT_READY; 5956 } else { 5957 /* Next do PLOGIs - if any */ 5958 num_sent = lpfc_els_disc_plogi(vport); 5959 5960 if (num_sent) 5961 return; 5962 5963 if (test_bit(FC_RSCN_MODE, &vport->fc_flag)) { 5964 /* Check to see if more RSCNs came in while we 5965 * were processing this one. 5966 */ 5967 if (vport->fc_rscn_id_cnt == 0 && 5968 !test_bit(FC_RSCN_DISCOVERY, &vport->fc_flag)) { 5969 clear_bit(FC_RSCN_MODE, &vport->fc_flag); 5970 lpfc_can_disctmo(vport); 5971 } else { 5972 lpfc_els_handle_rscn(vport); 5973 } 5974 } 5975 } 5976 return; 5977 } 5978 5979 /* 5980 * Ignore completion for all IOCBs on tx and txcmpl queue for ELS 5981 * ring the match the sppecified nodelist. 5982 */ 5983 static void 5984 lpfc_free_tx(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp) 5985 { 5986 LIST_HEAD(completions); 5987 struct lpfc_iocbq *iocb, *next_iocb; 5988 struct lpfc_sli_ring *pring; 5989 u32 ulp_command; 5990 5991 pring = lpfc_phba_elsring(phba); 5992 if (unlikely(!pring)) 5993 return; 5994 5995 /* Error matching iocb on txq or txcmplq 5996 * First check the txq. 5997 */ 5998 spin_lock_irq(&phba->hbalock); 5999 list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) { 6000 if (iocb->ndlp != ndlp) 6001 continue; 6002 6003 ulp_command = get_job_cmnd(phba, iocb); 6004 6005 if (ulp_command == CMD_ELS_REQUEST64_CR || 6006 ulp_command == CMD_XMIT_ELS_RSP64_CX) { 6007 6008 list_move_tail(&iocb->list, &completions); 6009 } 6010 } 6011 6012 /* Next check the txcmplq */ 6013 list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq, list) { 6014 if (iocb->ndlp != ndlp) 6015 continue; 6016 6017 ulp_command = get_job_cmnd(phba, iocb); 6018 6019 if (ulp_command == CMD_ELS_REQUEST64_CR || 6020 ulp_command == CMD_XMIT_ELS_RSP64_CX) { 6021 lpfc_sli_issue_abort_iotag(phba, pring, iocb, NULL); 6022 } 6023 } 6024 spin_unlock_irq(&phba->hbalock); 6025 6026 /* Make sure HBA is alive */ 6027 lpfc_issue_hb_tmo(phba); 6028 6029 /* Cancel all the IOCBs from the completions list */ 6030 lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT, 6031 IOERR_SLI_ABORTED); 6032 } 6033 6034 static void 6035 lpfc_disc_flush_list(struct lpfc_vport *vport) 6036 { 6037 struct lpfc_nodelist *ndlp, *next_ndlp; 6038 struct lpfc_hba *phba = vport->phba; 6039 6040 if (atomic_read(&vport->fc_plogi_cnt) || 6041 atomic_read(&vport->fc_adisc_cnt)) { 6042 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, 6043 nlp_listp) { 6044 if (ndlp->nlp_state == NLP_STE_PLOGI_ISSUE || 6045 ndlp->nlp_state == NLP_STE_ADISC_ISSUE) { 6046 lpfc_free_tx(phba, ndlp); 6047 } 6048 } 6049 } 6050 } 6051 6052 /* 6053 * lpfc_notify_xport_npr - notifies xport of node disappearance 6054 * @vport: Pointer to Virtual Port object. 6055 * 6056 * Transitions all ndlps to NPR state. When lpfc_nlp_set_state 6057 * calls lpfc_nlp_state_cleanup, the ndlp->rport is unregistered 6058 * and transport notified that the node is gone. 6059 * Return Code: 6060 * none 6061 */ 6062 static void 6063 lpfc_notify_xport_npr(struct lpfc_vport *vport) 6064 { 6065 struct lpfc_nodelist *ndlp, *next_ndlp; 6066 6067 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, 6068 nlp_listp) { 6069 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE); 6070 } 6071 } 6072 void 6073 lpfc_cleanup_discovery_resources(struct lpfc_vport *vport) 6074 { 6075 lpfc_els_flush_rscn(vport); 6076 lpfc_els_flush_cmd(vport); 6077 lpfc_disc_flush_list(vport); 6078 if (pci_channel_offline(vport->phba->pcidev)) 6079 lpfc_notify_xport_npr(vport); 6080 } 6081 6082 /*****************************************************************************/ 6083 /* 6084 * NAME: lpfc_disc_timeout 6085 * 6086 * FUNCTION: Fibre Channel driver discovery timeout routine. 6087 * 6088 * EXECUTION ENVIRONMENT: interrupt only 6089 * 6090 * CALLED FROM: 6091 * Timer function 6092 * 6093 * RETURNS: 6094 * none 6095 */ 6096 /*****************************************************************************/ 6097 void 6098 lpfc_disc_timeout(struct timer_list *t) 6099 { 6100 struct lpfc_vport *vport = from_timer(vport, t, fc_disctmo); 6101 struct lpfc_hba *phba = vport->phba; 6102 uint32_t tmo_posted; 6103 unsigned long flags = 0; 6104 6105 if (unlikely(!phba)) 6106 return; 6107 6108 spin_lock_irqsave(&vport->work_port_lock, flags); 6109 tmo_posted = vport->work_port_events & WORKER_DISC_TMO; 6110 if (!tmo_posted) 6111 vport->work_port_events |= WORKER_DISC_TMO; 6112 spin_unlock_irqrestore(&vport->work_port_lock, flags); 6113 6114 if (!tmo_posted) 6115 lpfc_worker_wake_up(phba); 6116 return; 6117 } 6118 6119 static void 6120 lpfc_disc_timeout_handler(struct lpfc_vport *vport) 6121 { 6122 struct lpfc_hba *phba = vport->phba; 6123 struct lpfc_sli *psli = &phba->sli; 6124 struct lpfc_nodelist *ndlp, *next_ndlp; 6125 LPFC_MBOXQ_t *initlinkmbox; 6126 int rc, clrlaerr = 0; 6127 6128 if (!test_and_clear_bit(FC_DISC_TMO, &vport->fc_flag)) 6129 return; 6130 6131 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, 6132 "disc timeout: state:x%x rtry:x%x flg:x%x", 6133 vport->port_state, vport->fc_ns_retry, vport->fc_flag); 6134 6135 switch (vport->port_state) { 6136 6137 case LPFC_LOCAL_CFG_LINK: 6138 /* 6139 * port_state is identically LPFC_LOCAL_CFG_LINK while 6140 * waiting for FAN timeout 6141 */ 6142 lpfc_printf_vlog(vport, KERN_WARNING, LOG_DISCOVERY, 6143 "0221 FAN timeout\n"); 6144 6145 /* Start discovery by sending FLOGI, clean up old rpis */ 6146 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, 6147 nlp_listp) { 6148 if (ndlp->nlp_state != NLP_STE_NPR_NODE) 6149 continue; 6150 if (ndlp->nlp_type & NLP_FABRIC) { 6151 /* Clean up the ndlp on Fabric connections */ 6152 lpfc_drop_node(vport, ndlp); 6153 6154 } else if (!(ndlp->nlp_flag & NLP_NPR_ADISC)) { 6155 /* Fail outstanding IO now since device 6156 * is marked for PLOGI. 6157 */ 6158 lpfc_unreg_rpi(vport, ndlp); 6159 } 6160 } 6161 if (vport->port_state != LPFC_FLOGI) { 6162 if (phba->sli_rev <= LPFC_SLI_REV3) 6163 lpfc_initial_flogi(vport); 6164 else 6165 lpfc_issue_init_vfi(vport); 6166 return; 6167 } 6168 break; 6169 6170 case LPFC_FDISC: 6171 case LPFC_FLOGI: 6172 /* port_state is identically LPFC_FLOGI while waiting for FLOGI cmpl */ 6173 /* Initial FLOGI timeout */ 6174 lpfc_printf_vlog(vport, KERN_ERR, 6175 LOG_TRACE_EVENT, 6176 "0222 Initial %s timeout\n", 6177 vport->vpi ? "FDISC" : "FLOGI"); 6178 6179 /* Assume no Fabric and go on with discovery. 6180 * Check for outstanding ELS FLOGI to abort. 6181 */ 6182 6183 /* FLOGI failed, so just use loop map to make discovery list */ 6184 lpfc_disc_list_loopmap(vport); 6185 6186 /* Start discovery */ 6187 lpfc_disc_start(vport); 6188 break; 6189 6190 case LPFC_FABRIC_CFG_LINK: 6191 /* hba_state is identically LPFC_FABRIC_CFG_LINK while waiting for 6192 NameServer login */ 6193 lpfc_printf_vlog(vport, KERN_ERR, 6194 LOG_TRACE_EVENT, 6195 "0223 Timeout while waiting for " 6196 "NameServer login\n"); 6197 /* Next look for NameServer ndlp */ 6198 ndlp = lpfc_findnode_did(vport, NameServer_DID); 6199 if (ndlp) 6200 lpfc_els_abort(phba, ndlp); 6201 6202 /* ReStart discovery */ 6203 goto restart_disc; 6204 6205 case LPFC_NS_QRY: 6206 /* Check for wait for NameServer Rsp timeout */ 6207 lpfc_printf_vlog(vport, KERN_ERR, 6208 LOG_TRACE_EVENT, 6209 "0224 NameServer Query timeout " 6210 "Data: x%x x%x\n", 6211 vport->fc_ns_retry, LPFC_MAX_NS_RETRY); 6212 6213 if (vport->fc_ns_retry < LPFC_MAX_NS_RETRY) { 6214 /* Try it one more time */ 6215 vport->fc_ns_retry++; 6216 vport->gidft_inp = 0; 6217 rc = lpfc_issue_gidft(vport); 6218 if (rc == 0) 6219 break; 6220 } 6221 vport->fc_ns_retry = 0; 6222 6223 restart_disc: 6224 /* 6225 * Discovery is over. 6226 * set port_state to PORT_READY if SLI2. 6227 * cmpl_reg_vpi will set port_state to READY for SLI3. 6228 */ 6229 if (phba->sli_rev < LPFC_SLI_REV4) { 6230 if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) 6231 lpfc_issue_reg_vpi(phba, vport); 6232 else { 6233 lpfc_issue_clear_la(phba, vport); 6234 vport->port_state = LPFC_VPORT_READY; 6235 } 6236 } 6237 6238 /* Setup and issue mailbox INITIALIZE LINK command */ 6239 initlinkmbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 6240 if (!initlinkmbox) { 6241 lpfc_printf_vlog(vport, KERN_ERR, 6242 LOG_TRACE_EVENT, 6243 "0206 Device Discovery " 6244 "completion error\n"); 6245 phba->link_state = LPFC_HBA_ERROR; 6246 break; 6247 } 6248 6249 lpfc_linkdown(phba); 6250 lpfc_init_link(phba, initlinkmbox, phba->cfg_topology, 6251 phba->cfg_link_speed); 6252 initlinkmbox->u.mb.un.varInitLnk.lipsr_AL_PA = 0; 6253 initlinkmbox->vport = vport; 6254 initlinkmbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl; 6255 rc = lpfc_sli_issue_mbox(phba, initlinkmbox, MBX_NOWAIT); 6256 lpfc_set_loopback_flag(phba); 6257 if (rc == MBX_NOT_FINISHED) 6258 mempool_free(initlinkmbox, phba->mbox_mem_pool); 6259 6260 break; 6261 6262 case LPFC_DISC_AUTH: 6263 /* Node Authentication timeout */ 6264 lpfc_printf_vlog(vport, KERN_ERR, 6265 LOG_TRACE_EVENT, 6266 "0227 Node Authentication timeout\n"); 6267 lpfc_disc_flush_list(vport); 6268 6269 /* 6270 * set port_state to PORT_READY if SLI2. 6271 * cmpl_reg_vpi will set port_state to READY for SLI3. 6272 */ 6273 if (phba->sli_rev < LPFC_SLI_REV4) { 6274 if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) 6275 lpfc_issue_reg_vpi(phba, vport); 6276 else { /* NPIV Not enabled */ 6277 lpfc_issue_clear_la(phba, vport); 6278 vport->port_state = LPFC_VPORT_READY; 6279 } 6280 } 6281 break; 6282 6283 case LPFC_VPORT_READY: 6284 if (test_bit(FC_RSCN_MODE, &vport->fc_flag)) { 6285 lpfc_printf_vlog(vport, KERN_ERR, 6286 LOG_TRACE_EVENT, 6287 "0231 RSCN timeout Data: x%x " 6288 "x%x x%x x%x\n", 6289 vport->fc_ns_retry, LPFC_MAX_NS_RETRY, 6290 vport->port_state, vport->gidft_inp); 6291 6292 /* Cleanup any outstanding ELS commands */ 6293 lpfc_els_flush_cmd(vport); 6294 6295 lpfc_els_flush_rscn(vport); 6296 lpfc_disc_flush_list(vport); 6297 } 6298 break; 6299 6300 default: 6301 lpfc_printf_vlog(vport, KERN_ERR, 6302 LOG_TRACE_EVENT, 6303 "0273 Unexpected discovery timeout, " 6304 "vport State x%x\n", vport->port_state); 6305 break; 6306 } 6307 6308 switch (phba->link_state) { 6309 case LPFC_CLEAR_LA: 6310 /* CLEAR LA timeout */ 6311 lpfc_printf_vlog(vport, KERN_ERR, 6312 LOG_TRACE_EVENT, 6313 "0228 CLEAR LA timeout\n"); 6314 clrlaerr = 1; 6315 break; 6316 6317 case LPFC_LINK_UP: 6318 lpfc_issue_clear_la(phba, vport); 6319 fallthrough; 6320 case LPFC_LINK_UNKNOWN: 6321 case LPFC_WARM_START: 6322 case LPFC_INIT_START: 6323 case LPFC_INIT_MBX_CMDS: 6324 case LPFC_LINK_DOWN: 6325 case LPFC_HBA_ERROR: 6326 lpfc_printf_vlog(vport, KERN_ERR, 6327 LOG_TRACE_EVENT, 6328 "0230 Unexpected timeout, hba link " 6329 "state x%x\n", phba->link_state); 6330 clrlaerr = 1; 6331 break; 6332 6333 case LPFC_HBA_READY: 6334 break; 6335 } 6336 6337 if (clrlaerr) { 6338 lpfc_disc_flush_list(vport); 6339 if (phba->sli_rev != LPFC_SLI_REV4) { 6340 psli->sli3_ring[(LPFC_EXTRA_RING)].flag &= 6341 ~LPFC_STOP_IOCB_EVENT; 6342 psli->sli3_ring[LPFC_FCP_RING].flag &= 6343 ~LPFC_STOP_IOCB_EVENT; 6344 } 6345 vport->port_state = LPFC_VPORT_READY; 6346 } 6347 return; 6348 } 6349 6350 /* 6351 * This routine handles processing a NameServer REG_LOGIN mailbox 6352 * command upon completion. It is setup in the LPFC_MBOXQ 6353 * as the completion routine when the command is 6354 * handed off to the SLI layer. 6355 */ 6356 void 6357 lpfc_mbx_cmpl_fdmi_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 6358 { 6359 MAILBOX_t *mb = &pmb->u.mb; 6360 struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *)pmb->ctx_ndlp; 6361 struct lpfc_vport *vport = pmb->vport; 6362 6363 pmb->ctx_ndlp = NULL; 6364 6365 if (phba->sli_rev < LPFC_SLI_REV4) 6366 ndlp->nlp_rpi = mb->un.varWords[0]; 6367 ndlp->nlp_flag |= NLP_RPI_REGISTERED; 6368 ndlp->nlp_type |= NLP_FABRIC; 6369 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE); 6370 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE | LOG_DISCOVERY, 6371 "0004 rpi:%x DID:%x flg:%x %d x%px\n", 6372 ndlp->nlp_rpi, ndlp->nlp_DID, ndlp->nlp_flag, 6373 kref_read(&ndlp->kref), 6374 ndlp); 6375 /* 6376 * Start issuing Fabric-Device Management Interface (FDMI) command to 6377 * 0xfffffa (FDMI well known port). 6378 * DHBA -> DPRT -> RHBA -> RPA (physical port) 6379 * DPRT -> RPRT (vports) 6380 */ 6381 if (vport->port_type == LPFC_PHYSICAL_PORT) { 6382 phba->link_flag &= ~LS_CT_VEN_RPA; /* For extra Vendor RPA */ 6383 lpfc_fdmi_cmd(vport, ndlp, SLI_MGMT_DHBA, 0); 6384 } else { 6385 lpfc_fdmi_cmd(vport, ndlp, SLI_MGMT_DPRT, 0); 6386 } 6387 6388 6389 /* decrement the node reference count held for this callback 6390 * function. 6391 */ 6392 lpfc_nlp_put(ndlp); 6393 lpfc_mbox_rsrc_cleanup(phba, pmb, MBOX_THD_UNLOCKED); 6394 return; 6395 } 6396 6397 static int 6398 lpfc_filter_by_rpi(struct lpfc_nodelist *ndlp, void *param) 6399 { 6400 uint16_t *rpi = param; 6401 6402 return ndlp->nlp_rpi == *rpi; 6403 } 6404 6405 static int 6406 lpfc_filter_by_wwpn(struct lpfc_nodelist *ndlp, void *param) 6407 { 6408 return memcmp(&ndlp->nlp_portname, param, 6409 sizeof(ndlp->nlp_portname)) == 0; 6410 } 6411 6412 static struct lpfc_nodelist * 6413 __lpfc_find_node(struct lpfc_vport *vport, node_filter filter, void *param) 6414 { 6415 struct lpfc_nodelist *ndlp; 6416 6417 list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) { 6418 if (filter(ndlp, param)) { 6419 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE_VERBOSE, 6420 "3185 FIND node filter %ps DID " 6421 "ndlp x%px did x%x flg x%x st x%x " 6422 "xri x%x type x%x rpi x%x\n", 6423 filter, ndlp, ndlp->nlp_DID, 6424 ndlp->nlp_flag, ndlp->nlp_state, 6425 ndlp->nlp_xri, ndlp->nlp_type, 6426 ndlp->nlp_rpi); 6427 return ndlp; 6428 } 6429 } 6430 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE, 6431 "3186 FIND node filter %ps NOT FOUND.\n", filter); 6432 return NULL; 6433 } 6434 6435 /* 6436 * This routine looks up the ndlp lists for the given RPI. If rpi found it 6437 * returns the node list element pointer else return NULL. 6438 */ 6439 struct lpfc_nodelist * 6440 __lpfc_findnode_rpi(struct lpfc_vport *vport, uint16_t rpi) 6441 { 6442 return __lpfc_find_node(vport, lpfc_filter_by_rpi, &rpi); 6443 } 6444 6445 /* 6446 * This routine looks up the ndlp lists for the given WWPN. If WWPN found it 6447 * returns the node element list pointer else return NULL. 6448 */ 6449 struct lpfc_nodelist * 6450 lpfc_findnode_wwpn(struct lpfc_vport *vport, struct lpfc_name *wwpn) 6451 { 6452 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 6453 struct lpfc_nodelist *ndlp; 6454 6455 spin_lock_irq(shost->host_lock); 6456 ndlp = __lpfc_find_node(vport, lpfc_filter_by_wwpn, wwpn); 6457 spin_unlock_irq(shost->host_lock); 6458 return ndlp; 6459 } 6460 6461 /* 6462 * This routine looks up the ndlp lists for the given RPI. If the rpi 6463 * is found, the routine returns the node element list pointer else 6464 * return NULL. 6465 */ 6466 struct lpfc_nodelist * 6467 lpfc_findnode_rpi(struct lpfc_vport *vport, uint16_t rpi) 6468 { 6469 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 6470 struct lpfc_nodelist *ndlp; 6471 unsigned long flags; 6472 6473 spin_lock_irqsave(shost->host_lock, flags); 6474 ndlp = __lpfc_findnode_rpi(vport, rpi); 6475 spin_unlock_irqrestore(shost->host_lock, flags); 6476 return ndlp; 6477 } 6478 6479 /** 6480 * lpfc_find_vport_by_vpid - Find a vport on a HBA through vport identifier 6481 * @phba: pointer to lpfc hba data structure. 6482 * @vpi: the physical host virtual N_Port identifier. 6483 * 6484 * This routine finds a vport on a HBA (referred by @phba) through a 6485 * @vpi. The function walks the HBA's vport list and returns the address 6486 * of the vport with the matching @vpi. 6487 * 6488 * Return code 6489 * NULL - No vport with the matching @vpi found 6490 * Otherwise - Address to the vport with the matching @vpi. 6491 **/ 6492 struct lpfc_vport * 6493 lpfc_find_vport_by_vpid(struct lpfc_hba *phba, uint16_t vpi) 6494 { 6495 struct lpfc_vport *vport; 6496 unsigned long flags; 6497 int i = 0; 6498 6499 /* The physical ports are always vpi 0 - translate is unnecessary. */ 6500 if (vpi > 0) { 6501 /* 6502 * Translate the physical vpi to the logical vpi. The 6503 * vport stores the logical vpi. 6504 */ 6505 for (i = 0; i <= phba->max_vpi; i++) { 6506 if (vpi == phba->vpi_ids[i]) 6507 break; 6508 } 6509 6510 if (i > phba->max_vpi) { 6511 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 6512 "2936 Could not find Vport mapped " 6513 "to vpi %d\n", vpi); 6514 return NULL; 6515 } 6516 } 6517 6518 spin_lock_irqsave(&phba->port_list_lock, flags); 6519 list_for_each_entry(vport, &phba->port_list, listentry) { 6520 if (vport->vpi == i) { 6521 spin_unlock_irqrestore(&phba->port_list_lock, flags); 6522 return vport; 6523 } 6524 } 6525 spin_unlock_irqrestore(&phba->port_list_lock, flags); 6526 return NULL; 6527 } 6528 6529 struct lpfc_nodelist * 6530 lpfc_nlp_init(struct lpfc_vport *vport, uint32_t did) 6531 { 6532 struct lpfc_nodelist *ndlp; 6533 int rpi = LPFC_RPI_ALLOC_ERROR; 6534 6535 if (vport->phba->sli_rev == LPFC_SLI_REV4) { 6536 rpi = lpfc_sli4_alloc_rpi(vport->phba); 6537 if (rpi == LPFC_RPI_ALLOC_ERROR) 6538 return NULL; 6539 } 6540 6541 ndlp = mempool_alloc(vport->phba->nlp_mem_pool, GFP_KERNEL); 6542 if (!ndlp) { 6543 if (vport->phba->sli_rev == LPFC_SLI_REV4) 6544 lpfc_sli4_free_rpi(vport->phba, rpi); 6545 return NULL; 6546 } 6547 6548 memset(ndlp, 0, sizeof (struct lpfc_nodelist)); 6549 6550 spin_lock_init(&ndlp->lock); 6551 6552 lpfc_initialize_node(vport, ndlp, did); 6553 INIT_LIST_HEAD(&ndlp->nlp_listp); 6554 if (vport->phba->sli_rev == LPFC_SLI_REV4) { 6555 ndlp->nlp_rpi = rpi; 6556 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE | LOG_DISCOVERY, 6557 "0007 Init New ndlp x%px, rpi:x%x DID:%x " 6558 "flg:x%x refcnt:%d\n", 6559 ndlp, ndlp->nlp_rpi, ndlp->nlp_DID, 6560 ndlp->nlp_flag, kref_read(&ndlp->kref)); 6561 6562 ndlp->active_rrqs_xri_bitmap = 6563 mempool_alloc(vport->phba->active_rrq_pool, 6564 GFP_KERNEL); 6565 if (ndlp->active_rrqs_xri_bitmap) 6566 memset(ndlp->active_rrqs_xri_bitmap, 0, 6567 ndlp->phba->cfg_rrq_xri_bitmap_sz); 6568 } 6569 6570 6571 6572 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE, 6573 "node init: did:x%x", 6574 ndlp->nlp_DID, 0, 0); 6575 6576 return ndlp; 6577 } 6578 6579 /* This routine releases all resources associated with a specifc NPort's ndlp 6580 * and mempool_free's the nodelist. 6581 */ 6582 static void 6583 lpfc_nlp_release(struct kref *kref) 6584 { 6585 struct lpfc_nodelist *ndlp = container_of(kref, struct lpfc_nodelist, 6586 kref); 6587 struct lpfc_vport *vport = ndlp->vport; 6588 6589 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE, 6590 "node release: did:x%x flg:x%x type:x%x", 6591 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type); 6592 6593 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE, 6594 "0279 %s: ndlp: x%px did %x refcnt:%d rpi:%x\n", 6595 __func__, ndlp, ndlp->nlp_DID, 6596 kref_read(&ndlp->kref), ndlp->nlp_rpi); 6597 6598 /* remove ndlp from action. */ 6599 lpfc_cancel_retry_delay_tmo(vport, ndlp); 6600 lpfc_cleanup_node(vport, ndlp); 6601 6602 /* Not all ELS transactions have registered the RPI with the port. 6603 * In these cases the rpi usage is temporary and the node is 6604 * released when the WQE is completed. Catch this case to free the 6605 * RPI to the pool. Because this node is in the release path, a lock 6606 * is unnecessary. All references are gone and the node has been 6607 * dequeued. 6608 */ 6609 if (ndlp->nlp_flag & NLP_RELEASE_RPI) { 6610 if (ndlp->nlp_rpi != LPFC_RPI_ALLOC_ERROR && 6611 !(ndlp->nlp_flag & (NLP_RPI_REGISTERED | NLP_UNREG_INP))) { 6612 lpfc_sli4_free_rpi(vport->phba, ndlp->nlp_rpi); 6613 ndlp->nlp_rpi = LPFC_RPI_ALLOC_ERROR; 6614 } 6615 } 6616 6617 /* The node is not freed back to memory, it is released to a pool so 6618 * the node fields need to be cleaned up. 6619 */ 6620 ndlp->vport = NULL; 6621 ndlp->nlp_state = NLP_STE_FREED_NODE; 6622 ndlp->nlp_flag = 0; 6623 ndlp->fc4_xpt_flags = 0; 6624 6625 /* free ndlp memory for final ndlp release */ 6626 if (ndlp->phba->sli_rev == LPFC_SLI_REV4) 6627 mempool_free(ndlp->active_rrqs_xri_bitmap, 6628 ndlp->phba->active_rrq_pool); 6629 mempool_free(ndlp, ndlp->phba->nlp_mem_pool); 6630 } 6631 6632 /* This routine bumps the reference count for a ndlp structure to ensure 6633 * that one discovery thread won't free a ndlp while another discovery thread 6634 * is using it. 6635 */ 6636 struct lpfc_nodelist * 6637 lpfc_nlp_get(struct lpfc_nodelist *ndlp) 6638 { 6639 unsigned long flags; 6640 6641 if (ndlp) { 6642 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE, 6643 "node get: did:x%x flg:x%x refcnt:x%x", 6644 ndlp->nlp_DID, ndlp->nlp_flag, 6645 kref_read(&ndlp->kref)); 6646 6647 /* The check of ndlp usage to prevent incrementing the 6648 * ndlp reference count that is in the process of being 6649 * released. 6650 */ 6651 spin_lock_irqsave(&ndlp->lock, flags); 6652 if (!kref_get_unless_zero(&ndlp->kref)) { 6653 spin_unlock_irqrestore(&ndlp->lock, flags); 6654 lpfc_printf_vlog(ndlp->vport, KERN_WARNING, LOG_NODE, 6655 "0276 %s: ndlp:x%px refcnt:%d\n", 6656 __func__, (void *)ndlp, kref_read(&ndlp->kref)); 6657 return NULL; 6658 } 6659 spin_unlock_irqrestore(&ndlp->lock, flags); 6660 } else { 6661 WARN_ONCE(!ndlp, "**** %s, get ref on NULL ndlp!", __func__); 6662 } 6663 6664 return ndlp; 6665 } 6666 6667 /* This routine decrements the reference count for a ndlp structure. If the 6668 * count goes to 0, this indicates the associated nodelist should be freed. 6669 */ 6670 int 6671 lpfc_nlp_put(struct lpfc_nodelist *ndlp) 6672 { 6673 if (ndlp) { 6674 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE, 6675 "node put: did:x%x flg:x%x refcnt:x%x", 6676 ndlp->nlp_DID, ndlp->nlp_flag, 6677 kref_read(&ndlp->kref)); 6678 } else { 6679 WARN_ONCE(!ndlp, "**** %s, put ref on NULL ndlp!", __func__); 6680 } 6681 6682 return ndlp ? kref_put(&ndlp->kref, lpfc_nlp_release) : 0; 6683 } 6684 6685 /** 6686 * lpfc_fcf_inuse - Check if FCF can be unregistered. 6687 * @phba: Pointer to hba context object. 6688 * 6689 * This function iterate through all FC nodes associated 6690 * will all vports to check if there is any node with 6691 * fc_rports associated with it. If there is an fc_rport 6692 * associated with the node, then the node is either in 6693 * discovered state or its devloss_timer is pending. 6694 */ 6695 static int 6696 lpfc_fcf_inuse(struct lpfc_hba *phba) 6697 { 6698 struct lpfc_vport **vports; 6699 int i, ret = 0; 6700 struct lpfc_nodelist *ndlp; 6701 unsigned long iflags; 6702 6703 vports = lpfc_create_vport_work_array(phba); 6704 6705 /* If driver cannot allocate memory, indicate fcf is in use */ 6706 if (!vports) 6707 return 1; 6708 6709 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) { 6710 /* 6711 * IF the CVL_RCVD bit is not set then we have sent the 6712 * flogi. 6713 * If dev_loss fires while we are waiting we do not want to 6714 * unreg the fcf. 6715 */ 6716 if (!test_bit(FC_VPORT_CVL_RCVD, &vports[i]->fc_flag)) { 6717 ret = 1; 6718 goto out; 6719 } 6720 spin_lock_irqsave(&vports[i]->fc_nodes_list_lock, iflags); 6721 list_for_each_entry(ndlp, &vports[i]->fc_nodes, nlp_listp) { 6722 if (ndlp->rport && 6723 (ndlp->rport->roles & FC_RPORT_ROLE_FCP_TARGET)) { 6724 ret = 1; 6725 spin_unlock_irqrestore(&vports[i]->fc_nodes_list_lock, 6726 iflags); 6727 goto out; 6728 } else if (ndlp->nlp_flag & NLP_RPI_REGISTERED) { 6729 ret = 1; 6730 lpfc_printf_log(phba, KERN_INFO, 6731 LOG_NODE | LOG_DISCOVERY, 6732 "2624 RPI %x DID %x flag %x " 6733 "still logged in\n", 6734 ndlp->nlp_rpi, ndlp->nlp_DID, 6735 ndlp->nlp_flag); 6736 } 6737 } 6738 spin_unlock_irqrestore(&vports[i]->fc_nodes_list_lock, iflags); 6739 } 6740 out: 6741 lpfc_destroy_vport_work_array(phba, vports); 6742 return ret; 6743 } 6744 6745 /** 6746 * lpfc_unregister_vfi_cmpl - Completion handler for unreg vfi. 6747 * @phba: Pointer to hba context object. 6748 * @mboxq: Pointer to mailbox object. 6749 * 6750 * This function frees memory associated with the mailbox command. 6751 */ 6752 void 6753 lpfc_unregister_vfi_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq) 6754 { 6755 struct lpfc_vport *vport = mboxq->vport; 6756 6757 if (mboxq->u.mb.mbxStatus) { 6758 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 6759 "2555 UNREG_VFI mbxStatus error x%x " 6760 "HBA state x%x\n", 6761 mboxq->u.mb.mbxStatus, vport->port_state); 6762 } 6763 clear_bit(FC_VFI_REGISTERED, &phba->pport->fc_flag); 6764 mempool_free(mboxq, phba->mbox_mem_pool); 6765 return; 6766 } 6767 6768 /** 6769 * lpfc_unregister_fcfi_cmpl - Completion handler for unreg fcfi. 6770 * @phba: Pointer to hba context object. 6771 * @mboxq: Pointer to mailbox object. 6772 * 6773 * This function frees memory associated with the mailbox command. 6774 */ 6775 static void 6776 lpfc_unregister_fcfi_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq) 6777 { 6778 struct lpfc_vport *vport = mboxq->vport; 6779 6780 if (mboxq->u.mb.mbxStatus) { 6781 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 6782 "2550 UNREG_FCFI mbxStatus error x%x " 6783 "HBA state x%x\n", 6784 mboxq->u.mb.mbxStatus, vport->port_state); 6785 } 6786 mempool_free(mboxq, phba->mbox_mem_pool); 6787 return; 6788 } 6789 6790 /** 6791 * lpfc_unregister_fcf_prep - Unregister fcf record preparation 6792 * @phba: Pointer to hba context object. 6793 * 6794 * This function prepare the HBA for unregistering the currently registered 6795 * FCF from the HBA. It performs unregistering, in order, RPIs, VPIs, and 6796 * VFIs. 6797 */ 6798 int 6799 lpfc_unregister_fcf_prep(struct lpfc_hba *phba) 6800 { 6801 struct lpfc_vport **vports; 6802 struct lpfc_nodelist *ndlp; 6803 struct Scsi_Host *shost; 6804 int i = 0, rc; 6805 6806 /* Unregister RPIs */ 6807 if (lpfc_fcf_inuse(phba)) 6808 lpfc_unreg_hba_rpis(phba); 6809 6810 /* At this point, all discovery is aborted */ 6811 phba->pport->port_state = LPFC_VPORT_UNKNOWN; 6812 6813 /* Unregister VPIs */ 6814 vports = lpfc_create_vport_work_array(phba); 6815 if (vports && (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)) 6816 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) { 6817 /* Stop FLOGI/FDISC retries */ 6818 ndlp = lpfc_findnode_did(vports[i], Fabric_DID); 6819 if (ndlp) 6820 lpfc_cancel_retry_delay_tmo(vports[i], ndlp); 6821 lpfc_cleanup_pending_mbox(vports[i]); 6822 if (phba->sli_rev == LPFC_SLI_REV4) 6823 lpfc_sli4_unreg_all_rpis(vports[i]); 6824 lpfc_mbx_unreg_vpi(vports[i]); 6825 shost = lpfc_shost_from_vport(vports[i]); 6826 spin_lock_irq(shost->host_lock); 6827 vports[i]->vpi_state &= ~LPFC_VPI_REGISTERED; 6828 spin_unlock_irq(shost->host_lock); 6829 set_bit(FC_VPORT_NEEDS_INIT_VPI, &vports[i]->fc_flag); 6830 } 6831 lpfc_destroy_vport_work_array(phba, vports); 6832 if (i == 0 && (!(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED))) { 6833 ndlp = lpfc_findnode_did(phba->pport, Fabric_DID); 6834 if (ndlp) 6835 lpfc_cancel_retry_delay_tmo(phba->pport, ndlp); 6836 lpfc_cleanup_pending_mbox(phba->pport); 6837 if (phba->sli_rev == LPFC_SLI_REV4) 6838 lpfc_sli4_unreg_all_rpis(phba->pport); 6839 lpfc_mbx_unreg_vpi(phba->pport); 6840 shost = lpfc_shost_from_vport(phba->pport); 6841 spin_lock_irq(shost->host_lock); 6842 phba->pport->vpi_state &= ~LPFC_VPI_REGISTERED; 6843 spin_unlock_irq(shost->host_lock); 6844 set_bit(FC_VPORT_NEEDS_INIT_VPI, &phba->pport->fc_flag); 6845 } 6846 6847 /* Cleanup any outstanding ELS commands */ 6848 lpfc_els_flush_all_cmd(phba); 6849 6850 /* Unregister the physical port VFI */ 6851 rc = lpfc_issue_unreg_vfi(phba->pport); 6852 return rc; 6853 } 6854 6855 /** 6856 * lpfc_sli4_unregister_fcf - Unregister currently registered FCF record 6857 * @phba: Pointer to hba context object. 6858 * 6859 * This function issues synchronous unregister FCF mailbox command to HBA to 6860 * unregister the currently registered FCF record. The driver does not reset 6861 * the driver FCF usage state flags. 6862 * 6863 * Return 0 if successfully issued, none-zero otherwise. 6864 */ 6865 int 6866 lpfc_sli4_unregister_fcf(struct lpfc_hba *phba) 6867 { 6868 LPFC_MBOXQ_t *mbox; 6869 int rc; 6870 6871 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 6872 if (!mbox) { 6873 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 6874 "2551 UNREG_FCFI mbox allocation failed" 6875 "HBA state x%x\n", phba->pport->port_state); 6876 return -ENOMEM; 6877 } 6878 lpfc_unreg_fcfi(mbox, phba->fcf.fcfi); 6879 mbox->vport = phba->pport; 6880 mbox->mbox_cmpl = lpfc_unregister_fcfi_cmpl; 6881 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT); 6882 6883 if (rc == MBX_NOT_FINISHED) { 6884 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 6885 "2552 Unregister FCFI command failed rc x%x " 6886 "HBA state x%x\n", 6887 rc, phba->pport->port_state); 6888 return -EINVAL; 6889 } 6890 return 0; 6891 } 6892 6893 /** 6894 * lpfc_unregister_fcf_rescan - Unregister currently registered fcf and rescan 6895 * @phba: Pointer to hba context object. 6896 * 6897 * This function unregisters the currently reigstered FCF. This function 6898 * also tries to find another FCF for discovery by rescan the HBA FCF table. 6899 */ 6900 void 6901 lpfc_unregister_fcf_rescan(struct lpfc_hba *phba) 6902 { 6903 int rc; 6904 6905 /* Preparation for unregistering fcf */ 6906 rc = lpfc_unregister_fcf_prep(phba); 6907 if (rc) { 6908 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 6909 "2748 Failed to prepare for unregistering " 6910 "HBA's FCF record: rc=%d\n", rc); 6911 return; 6912 } 6913 6914 /* Now, unregister FCF record and reset HBA FCF state */ 6915 rc = lpfc_sli4_unregister_fcf(phba); 6916 if (rc) 6917 return; 6918 /* Reset HBA FCF states after successful unregister FCF */ 6919 spin_lock_irq(&phba->hbalock); 6920 phba->fcf.fcf_flag = 0; 6921 spin_unlock_irq(&phba->hbalock); 6922 phba->fcf.current_rec.flag = 0; 6923 6924 /* 6925 * If driver is not unloading, check if there is any other 6926 * FCF record that can be used for discovery. 6927 */ 6928 if (test_bit(FC_UNLOADING, &phba->pport->load_flag) || 6929 phba->link_state < LPFC_LINK_UP) 6930 return; 6931 6932 /* This is considered as the initial FCF discovery scan */ 6933 spin_lock_irq(&phba->hbalock); 6934 phba->fcf.fcf_flag |= FCF_INIT_DISC; 6935 spin_unlock_irq(&phba->hbalock); 6936 6937 /* Reset FCF roundrobin bmask for new discovery */ 6938 lpfc_sli4_clear_fcf_rr_bmask(phba); 6939 6940 rc = lpfc_sli4_fcf_scan_read_fcf_rec(phba, LPFC_FCOE_FCF_GET_FIRST); 6941 6942 if (rc) { 6943 spin_lock_irq(&phba->hbalock); 6944 phba->fcf.fcf_flag &= ~FCF_INIT_DISC; 6945 spin_unlock_irq(&phba->hbalock); 6946 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 6947 "2553 lpfc_unregister_unused_fcf failed " 6948 "to read FCF record HBA state x%x\n", 6949 phba->pport->port_state); 6950 } 6951 } 6952 6953 /** 6954 * lpfc_unregister_fcf - Unregister the currently registered fcf record 6955 * @phba: Pointer to hba context object. 6956 * 6957 * This function just unregisters the currently reigstered FCF. It does not 6958 * try to find another FCF for discovery. 6959 */ 6960 void 6961 lpfc_unregister_fcf(struct lpfc_hba *phba) 6962 { 6963 int rc; 6964 6965 /* Preparation for unregistering fcf */ 6966 rc = lpfc_unregister_fcf_prep(phba); 6967 if (rc) { 6968 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 6969 "2749 Failed to prepare for unregistering " 6970 "HBA's FCF record: rc=%d\n", rc); 6971 return; 6972 } 6973 6974 /* Now, unregister FCF record and reset HBA FCF state */ 6975 rc = lpfc_sli4_unregister_fcf(phba); 6976 if (rc) 6977 return; 6978 /* Set proper HBA FCF states after successful unregister FCF */ 6979 spin_lock_irq(&phba->hbalock); 6980 phba->fcf.fcf_flag &= ~FCF_REGISTERED; 6981 spin_unlock_irq(&phba->hbalock); 6982 } 6983 6984 /** 6985 * lpfc_unregister_unused_fcf - Unregister FCF if all devices are disconnected. 6986 * @phba: Pointer to hba context object. 6987 * 6988 * This function check if there are any connected remote port for the FCF and 6989 * if all the devices are disconnected, this function unregister FCFI. 6990 * This function also tries to use another FCF for discovery. 6991 */ 6992 void 6993 lpfc_unregister_unused_fcf(struct lpfc_hba *phba) 6994 { 6995 /* 6996 * If HBA is not running in FIP mode, if HBA does not support 6997 * FCoE, if FCF discovery is ongoing, or if FCF has not been 6998 * registered, do nothing. 6999 */ 7000 spin_lock_irq(&phba->hbalock); 7001 if (!(phba->hba_flag & HBA_FCOE_MODE) || 7002 !(phba->fcf.fcf_flag & FCF_REGISTERED) || 7003 !(phba->hba_flag & HBA_FIP_SUPPORT) || 7004 (phba->fcf.fcf_flag & FCF_DISCOVERY) || 7005 (phba->pport->port_state == LPFC_FLOGI)) { 7006 spin_unlock_irq(&phba->hbalock); 7007 return; 7008 } 7009 spin_unlock_irq(&phba->hbalock); 7010 7011 if (lpfc_fcf_inuse(phba)) 7012 return; 7013 7014 lpfc_unregister_fcf_rescan(phba); 7015 } 7016 7017 /** 7018 * lpfc_read_fcf_conn_tbl - Create driver FCF connection table. 7019 * @phba: Pointer to hba context object. 7020 * @buff: Buffer containing the FCF connection table as in the config 7021 * region. 7022 * This function create driver data structure for the FCF connection 7023 * record table read from config region 23. 7024 */ 7025 static void 7026 lpfc_read_fcf_conn_tbl(struct lpfc_hba *phba, 7027 uint8_t *buff) 7028 { 7029 struct lpfc_fcf_conn_entry *conn_entry, *next_conn_entry; 7030 struct lpfc_fcf_conn_hdr *conn_hdr; 7031 struct lpfc_fcf_conn_rec *conn_rec; 7032 uint32_t record_count; 7033 int i; 7034 7035 /* Free the current connect table */ 7036 list_for_each_entry_safe(conn_entry, next_conn_entry, 7037 &phba->fcf_conn_rec_list, list) { 7038 list_del_init(&conn_entry->list); 7039 kfree(conn_entry); 7040 } 7041 7042 conn_hdr = (struct lpfc_fcf_conn_hdr *) buff; 7043 record_count = conn_hdr->length * sizeof(uint32_t)/ 7044 sizeof(struct lpfc_fcf_conn_rec); 7045 7046 conn_rec = (struct lpfc_fcf_conn_rec *) 7047 (buff + sizeof(struct lpfc_fcf_conn_hdr)); 7048 7049 for (i = 0; i < record_count; i++) { 7050 if (!(conn_rec[i].flags & FCFCNCT_VALID)) 7051 continue; 7052 conn_entry = kzalloc(sizeof(struct lpfc_fcf_conn_entry), 7053 GFP_KERNEL); 7054 if (!conn_entry) { 7055 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 7056 "2566 Failed to allocate connection" 7057 " table entry\n"); 7058 return; 7059 } 7060 7061 memcpy(&conn_entry->conn_rec, &conn_rec[i], 7062 sizeof(struct lpfc_fcf_conn_rec)); 7063 list_add_tail(&conn_entry->list, 7064 &phba->fcf_conn_rec_list); 7065 } 7066 7067 if (!list_empty(&phba->fcf_conn_rec_list)) { 7068 i = 0; 7069 list_for_each_entry(conn_entry, &phba->fcf_conn_rec_list, 7070 list) { 7071 conn_rec = &conn_entry->conn_rec; 7072 lpfc_printf_log(phba, KERN_INFO, LOG_INIT, 7073 "3345 FCF connection list rec[%02d]: " 7074 "flags:x%04x, vtag:x%04x, " 7075 "fabric_name:x%02x:%02x:%02x:%02x:" 7076 "%02x:%02x:%02x:%02x, " 7077 "switch_name:x%02x:%02x:%02x:%02x:" 7078 "%02x:%02x:%02x:%02x\n", i++, 7079 conn_rec->flags, conn_rec->vlan_tag, 7080 conn_rec->fabric_name[0], 7081 conn_rec->fabric_name[1], 7082 conn_rec->fabric_name[2], 7083 conn_rec->fabric_name[3], 7084 conn_rec->fabric_name[4], 7085 conn_rec->fabric_name[5], 7086 conn_rec->fabric_name[6], 7087 conn_rec->fabric_name[7], 7088 conn_rec->switch_name[0], 7089 conn_rec->switch_name[1], 7090 conn_rec->switch_name[2], 7091 conn_rec->switch_name[3], 7092 conn_rec->switch_name[4], 7093 conn_rec->switch_name[5], 7094 conn_rec->switch_name[6], 7095 conn_rec->switch_name[7]); 7096 } 7097 } 7098 } 7099 7100 /** 7101 * lpfc_read_fcoe_param - Read FCoe parameters from conf region.. 7102 * @phba: Pointer to hba context object. 7103 * @buff: Buffer containing the FCoE parameter data structure. 7104 * 7105 * This function update driver data structure with config 7106 * parameters read from config region 23. 7107 */ 7108 static void 7109 lpfc_read_fcoe_param(struct lpfc_hba *phba, 7110 uint8_t *buff) 7111 { 7112 struct lpfc_fip_param_hdr *fcoe_param_hdr; 7113 struct lpfc_fcoe_params *fcoe_param; 7114 7115 fcoe_param_hdr = (struct lpfc_fip_param_hdr *) 7116 buff; 7117 fcoe_param = (struct lpfc_fcoe_params *) 7118 (buff + sizeof(struct lpfc_fip_param_hdr)); 7119 7120 if ((fcoe_param_hdr->parm_version != FIPP_VERSION) || 7121 (fcoe_param_hdr->length != FCOE_PARAM_LENGTH)) 7122 return; 7123 7124 if (fcoe_param_hdr->parm_flags & FIPP_VLAN_VALID) { 7125 phba->valid_vlan = 1; 7126 phba->vlan_id = le16_to_cpu(fcoe_param->vlan_tag) & 7127 0xFFF; 7128 } 7129 7130 phba->fc_map[0] = fcoe_param->fc_map[0]; 7131 phba->fc_map[1] = fcoe_param->fc_map[1]; 7132 phba->fc_map[2] = fcoe_param->fc_map[2]; 7133 return; 7134 } 7135 7136 /** 7137 * lpfc_get_rec_conf23 - Get a record type in config region data. 7138 * @buff: Buffer containing config region 23 data. 7139 * @size: Size of the data buffer. 7140 * @rec_type: Record type to be searched. 7141 * 7142 * This function searches config region data to find the beginning 7143 * of the record specified by record_type. If record found, this 7144 * function return pointer to the record else return NULL. 7145 */ 7146 static uint8_t * 7147 lpfc_get_rec_conf23(uint8_t *buff, uint32_t size, uint8_t rec_type) 7148 { 7149 uint32_t offset = 0, rec_length; 7150 7151 if ((buff[0] == LPFC_REGION23_LAST_REC) || 7152 (size < sizeof(uint32_t))) 7153 return NULL; 7154 7155 rec_length = buff[offset + 1]; 7156 7157 /* 7158 * One TLV record has one word header and number of data words 7159 * specified in the rec_length field of the record header. 7160 */ 7161 while ((offset + rec_length * sizeof(uint32_t) + sizeof(uint32_t)) 7162 <= size) { 7163 if (buff[offset] == rec_type) 7164 return &buff[offset]; 7165 7166 if (buff[offset] == LPFC_REGION23_LAST_REC) 7167 return NULL; 7168 7169 offset += rec_length * sizeof(uint32_t) + sizeof(uint32_t); 7170 rec_length = buff[offset + 1]; 7171 } 7172 return NULL; 7173 } 7174 7175 /** 7176 * lpfc_parse_fcoe_conf - Parse FCoE config data read from config region 23. 7177 * @phba: Pointer to lpfc_hba data structure. 7178 * @buff: Buffer containing config region 23 data. 7179 * @size: Size of the data buffer. 7180 * 7181 * This function parses the FCoE config parameters in config region 23 and 7182 * populate driver data structure with the parameters. 7183 */ 7184 void 7185 lpfc_parse_fcoe_conf(struct lpfc_hba *phba, 7186 uint8_t *buff, 7187 uint32_t size) 7188 { 7189 uint32_t offset = 0; 7190 uint8_t *rec_ptr; 7191 7192 /* 7193 * If data size is less than 2 words signature and version cannot be 7194 * verified. 7195 */ 7196 if (size < 2*sizeof(uint32_t)) 7197 return; 7198 7199 /* Check the region signature first */ 7200 if (memcmp(buff, LPFC_REGION23_SIGNATURE, 4)) { 7201 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 7202 "2567 Config region 23 has bad signature\n"); 7203 return; 7204 } 7205 7206 offset += 4; 7207 7208 /* Check the data structure version */ 7209 if (buff[offset] != LPFC_REGION23_VERSION) { 7210 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 7211 "2568 Config region 23 has bad version\n"); 7212 return; 7213 } 7214 offset += 4; 7215 7216 /* Read FCoE param record */ 7217 rec_ptr = lpfc_get_rec_conf23(&buff[offset], 7218 size - offset, FCOE_PARAM_TYPE); 7219 if (rec_ptr) 7220 lpfc_read_fcoe_param(phba, rec_ptr); 7221 7222 /* Read FCF connection table */ 7223 rec_ptr = lpfc_get_rec_conf23(&buff[offset], 7224 size - offset, FCOE_CONN_TBL_TYPE); 7225 if (rec_ptr) 7226 lpfc_read_fcf_conn_tbl(phba, rec_ptr); 7227 7228 } 7229 7230 /* 7231 * lpfc_error_lost_link - IO failure from link event or FW reset check. 7232 * 7233 * @vport: Pointer to lpfc_vport data structure. 7234 * @ulp_status: IO completion status. 7235 * @ulp_word4: Reason code for the ulp_status. 7236 * 7237 * This function evaluates the ulp_status and ulp_word4 values 7238 * for specific error values that indicate an internal link fault 7239 * or fw reset event for the completing IO. Callers require this 7240 * common data to decide next steps on the IO. 7241 * 7242 * Return: 7243 * false - No link or reset error occurred. 7244 * true - A link or reset error occurred. 7245 */ 7246 bool 7247 lpfc_error_lost_link(struct lpfc_vport *vport, u32 ulp_status, u32 ulp_word4) 7248 { 7249 /* Mask off the extra port data to get just the reason code. */ 7250 u32 rsn_code = IOERR_PARAM_MASK & ulp_word4; 7251 7252 if (ulp_status == IOSTAT_LOCAL_REJECT && 7253 (rsn_code == IOERR_SLI_ABORTED || 7254 rsn_code == IOERR_LINK_DOWN || 7255 rsn_code == IOERR_SLI_DOWN)) { 7256 lpfc_printf_vlog(vport, KERN_WARNING, LOG_SLI | LOG_ELS, 7257 "0408 Report link error true: <x%x:x%x>\n", 7258 ulp_status, ulp_word4); 7259 return true; 7260 } 7261 7262 return false; 7263 } 7264