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