1 /******************************************************************* 2 * This file is part of the Emulex Linux Device Driver for * 3 * Fibre Channel Host Bus Adapters. * 4 * Copyright (C) 2017-2022 Broadcom. All Rights Reserved. The term * 5 * “Broadcom” refers to Broadcom Inc. and/or its subsidiaries. * 6 * Copyright (C) 2004-2016 Emulex. All rights reserved. * 7 * EMULEX and SLI are trademarks of Emulex. * 8 * www.broadcom.com * 9 * Portions Copyright (C) 2004-2005 Christoph Hellwig * 10 * * 11 * This program is free software; you can redistribute it and/or * 12 * modify it under the terms of version 2 of the GNU General * 13 * Public License as published by the Free Software Foundation. * 14 * This program is distributed in the hope that it will be useful. * 15 * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND * 16 * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, * 17 * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE * 18 * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD * 19 * TO BE LEGALLY INVALID. See the GNU General Public License for * 20 * more details, a copy of which can be found in the file COPYING * 21 * included with this package. * 22 *******************************************************************/ 23 24 #include <linux/blkdev.h> 25 #include <linux/delay.h> 26 #include <linux/slab.h> 27 #include <linux/pci.h> 28 #include <linux/kthread.h> 29 #include <linux/interrupt.h> 30 #include <linux/lockdep.h> 31 #include <linux/utsname.h> 32 33 #include <scsi/scsi.h> 34 #include <scsi/scsi_device.h> 35 #include <scsi/scsi_host.h> 36 #include <scsi/scsi_transport_fc.h> 37 #include <scsi/fc/fc_fs.h> 38 39 #include "lpfc_hw4.h" 40 #include "lpfc_hw.h" 41 #include "lpfc_nl.h" 42 #include "lpfc_disc.h" 43 #include "lpfc_sli.h" 44 #include "lpfc_sli4.h" 45 #include "lpfc.h" 46 #include "lpfc_scsi.h" 47 #include "lpfc_nvme.h" 48 #include "lpfc_logmsg.h" 49 #include "lpfc_crtn.h" 50 #include "lpfc_vport.h" 51 #include "lpfc_debugfs.h" 52 53 /* AlpaArray for assignment of scsid for scan-down and bind_method */ 54 static uint8_t lpfcAlpaArray[] = { 55 0xEF, 0xE8, 0xE4, 0xE2, 0xE1, 0xE0, 0xDC, 0xDA, 0xD9, 0xD6, 56 0xD5, 0xD4, 0xD3, 0xD2, 0xD1, 0xCE, 0xCD, 0xCC, 0xCB, 0xCA, 57 0xC9, 0xC7, 0xC6, 0xC5, 0xC3, 0xBC, 0xBA, 0xB9, 0xB6, 0xB5, 58 0xB4, 0xB3, 0xB2, 0xB1, 0xAE, 0xAD, 0xAC, 0xAB, 0xAA, 0xA9, 59 0xA7, 0xA6, 0xA5, 0xA3, 0x9F, 0x9E, 0x9D, 0x9B, 0x98, 0x97, 60 0x90, 0x8F, 0x88, 0x84, 0x82, 0x81, 0x80, 0x7C, 0x7A, 0x79, 61 0x76, 0x75, 0x74, 0x73, 0x72, 0x71, 0x6E, 0x6D, 0x6C, 0x6B, 62 0x6A, 0x69, 0x67, 0x66, 0x65, 0x63, 0x5C, 0x5A, 0x59, 0x56, 63 0x55, 0x54, 0x53, 0x52, 0x51, 0x4E, 0x4D, 0x4C, 0x4B, 0x4A, 64 0x49, 0x47, 0x46, 0x45, 0x43, 0x3C, 0x3A, 0x39, 0x36, 0x35, 65 0x34, 0x33, 0x32, 0x31, 0x2E, 0x2D, 0x2C, 0x2B, 0x2A, 0x29, 66 0x27, 0x26, 0x25, 0x23, 0x1F, 0x1E, 0x1D, 0x1B, 0x18, 0x17, 67 0x10, 0x0F, 0x08, 0x04, 0x02, 0x01 68 }; 69 70 static void lpfc_disc_timeout_handler(struct lpfc_vport *); 71 static void lpfc_disc_flush_list(struct lpfc_vport *vport); 72 static void lpfc_unregister_fcfi_cmpl(struct lpfc_hba *, LPFC_MBOXQ_t *); 73 static int lpfc_fcf_inuse(struct lpfc_hba *); 74 static void lpfc_mbx_cmpl_read_sparam(struct lpfc_hba *, LPFC_MBOXQ_t *); 75 static void lpfc_check_inactive_vmid(struct lpfc_hba *phba); 76 static void lpfc_check_vmid_qfpa_issue(struct lpfc_hba *phba); 77 78 static int 79 lpfc_valid_xpt_node(struct lpfc_nodelist *ndlp) 80 { 81 if (ndlp->nlp_fc4_type || 82 ndlp->nlp_type & NLP_FABRIC) 83 return 1; 84 return 0; 85 } 86 /* The source of a terminate rport I/O is either a dev_loss_tmo 87 * event or a call to fc_remove_host. While the rport should be 88 * valid during these downcalls, the transport can call twice 89 * in a single event. This routine provides somoe protection 90 * as the NDLP isn't really free, just released to the pool. 91 */ 92 static int 93 lpfc_rport_invalid(struct fc_rport *rport) 94 { 95 struct lpfc_rport_data *rdata; 96 struct lpfc_nodelist *ndlp; 97 98 if (!rport) { 99 pr_err("**** %s: NULL rport, exit.\n", __func__); 100 return -EINVAL; 101 } 102 103 rdata = rport->dd_data; 104 if (!rdata) { 105 pr_err("**** %s: NULL dd_data on rport x%px SID x%x\n", 106 __func__, rport, rport->scsi_target_id); 107 return -EINVAL; 108 } 109 110 ndlp = rdata->pnode; 111 if (!rdata->pnode) { 112 pr_info("**** %s: NULL ndlp on rport x%px SID x%x\n", 113 __func__, rport, rport->scsi_target_id); 114 return -EINVAL; 115 } 116 117 if (!ndlp->vport) { 118 pr_err("**** %s: Null vport on ndlp x%px, DID x%x rport x%px " 119 "SID x%x\n", __func__, ndlp, ndlp->nlp_DID, rport, 120 rport->scsi_target_id); 121 return -EINVAL; 122 } 123 return 0; 124 } 125 126 void 127 lpfc_terminate_rport_io(struct fc_rport *rport) 128 { 129 struct lpfc_rport_data *rdata; 130 struct lpfc_nodelist *ndlp; 131 struct lpfc_vport *vport; 132 133 if (lpfc_rport_invalid(rport)) 134 return; 135 136 rdata = rport->dd_data; 137 ndlp = rdata->pnode; 138 vport = ndlp->vport; 139 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT, 140 "rport terminate: sid:x%x did:x%x flg:x%x", 141 ndlp->nlp_sid, ndlp->nlp_DID, ndlp->nlp_flag); 142 143 if (ndlp->nlp_sid != NLP_NO_SID) 144 lpfc_sli_abort_iocb(vport, ndlp->nlp_sid, 0, LPFC_CTX_TGT); 145 } 146 147 /* 148 * This function will be called when dev_loss_tmo fire. 149 */ 150 void 151 lpfc_dev_loss_tmo_callbk(struct fc_rport *rport) 152 { 153 struct lpfc_nodelist *ndlp; 154 struct lpfc_vport *vport; 155 struct lpfc_hba *phba; 156 struct lpfc_work_evt *evtp; 157 unsigned long iflags; 158 159 ndlp = ((struct lpfc_rport_data *)rport->dd_data)->pnode; 160 if (!ndlp) 161 return; 162 163 vport = ndlp->vport; 164 phba = vport->phba; 165 166 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT, 167 "rport devlosscb: sid:x%x did:x%x flg:x%x", 168 ndlp->nlp_sid, ndlp->nlp_DID, ndlp->nlp_flag); 169 170 lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_NODE, 171 "3181 dev_loss_callbk x%06x, rport x%px flg x%x " 172 "load_flag x%x refcnt %d state %d xpt x%x\n", 173 ndlp->nlp_DID, ndlp->rport, ndlp->nlp_flag, 174 vport->load_flag, kref_read(&ndlp->kref), 175 ndlp->nlp_state, ndlp->fc4_xpt_flags); 176 177 /* Don't schedule a worker thread event if the vport is going down. 178 * The teardown process cleans up the node via lpfc_drop_node. 179 */ 180 if (vport->load_flag & FC_UNLOADING) { 181 ((struct lpfc_rport_data *)rport->dd_data)->pnode = NULL; 182 ndlp->rport = NULL; 183 184 ndlp->fc4_xpt_flags &= ~SCSI_XPT_REGD; 185 /* clear the NLP_XPT_REGD if the node is not registered 186 * with nvme-fc 187 */ 188 if (ndlp->fc4_xpt_flags == NLP_XPT_REGD) 189 ndlp->fc4_xpt_flags &= ~NLP_XPT_REGD; 190 191 /* Remove the node reference from remote_port_add now. 192 * The driver will not call remote_port_delete. 193 */ 194 lpfc_nlp_put(ndlp); 195 return; 196 } 197 198 if (ndlp->nlp_state == NLP_STE_MAPPED_NODE) 199 return; 200 201 if (rport->port_name != wwn_to_u64(ndlp->nlp_portname.u.wwn)) 202 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 203 "6789 rport name %llx != node port name %llx", 204 rport->port_name, 205 wwn_to_u64(ndlp->nlp_portname.u.wwn)); 206 207 evtp = &ndlp->dev_loss_evt; 208 209 if (!list_empty(&evtp->evt_listp)) { 210 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 211 "6790 rport name %llx dev_loss_evt pending\n", 212 rport->port_name); 213 return; 214 } 215 216 spin_lock_irqsave(&ndlp->lock, iflags); 217 ndlp->nlp_flag |= NLP_IN_DEV_LOSS; 218 219 /* If there is a PLOGI in progress, and we are in a 220 * NLP_NPR_2B_DISC state, don't turn off the flag. 221 */ 222 if (ndlp->nlp_state != NLP_STE_PLOGI_ISSUE) 223 ndlp->nlp_flag &= ~NLP_NPR_2B_DISC; 224 225 /* 226 * The backend does not expect any more calls associated with this 227 * rport. Remove the association between rport and ndlp. 228 */ 229 ndlp->fc4_xpt_flags &= ~SCSI_XPT_REGD; 230 ((struct lpfc_rport_data *)rport->dd_data)->pnode = NULL; 231 ndlp->rport = NULL; 232 spin_unlock_irqrestore(&ndlp->lock, iflags); 233 234 if (phba->worker_thread) { 235 /* We need to hold the node by incrementing the reference 236 * count until this queued work is done 237 */ 238 evtp->evt_arg1 = lpfc_nlp_get(ndlp); 239 240 spin_lock_irqsave(&phba->hbalock, iflags); 241 if (evtp->evt_arg1) { 242 evtp->evt = LPFC_EVT_DEV_LOSS; 243 list_add_tail(&evtp->evt_listp, &phba->work_list); 244 lpfc_worker_wake_up(phba); 245 } 246 spin_unlock_irqrestore(&phba->hbalock, iflags); 247 } else { 248 lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_NODE, 249 "3188 worker thread is stopped %s x%06x, " 250 " rport x%px flg x%x load_flag x%x refcnt " 251 "%d\n", __func__, ndlp->nlp_DID, 252 ndlp->rport, ndlp->nlp_flag, 253 vport->load_flag, kref_read(&ndlp->kref)); 254 if (!(ndlp->fc4_xpt_flags & NVME_XPT_REGD)) { 255 spin_lock_irqsave(&ndlp->lock, iflags); 256 /* Node is in dev loss. No further transaction. */ 257 ndlp->nlp_flag &= ~NLP_IN_DEV_LOSS; 258 spin_unlock_irqrestore(&ndlp->lock, iflags); 259 lpfc_disc_state_machine(vport, ndlp, NULL, 260 NLP_EVT_DEVICE_RM); 261 } 262 263 } 264 265 return; 266 } 267 268 /** 269 * lpfc_check_inactive_vmid_one - VMID inactivity checker for a vport 270 * @vport: Pointer to vport context object. 271 * 272 * This function checks for idle VMID entries related to a particular vport. If 273 * found unused/idle, free them accordingly. 274 **/ 275 static void lpfc_check_inactive_vmid_one(struct lpfc_vport *vport) 276 { 277 u16 keep; 278 u32 difftime = 0, r, bucket; 279 u64 *lta; 280 int cpu; 281 struct lpfc_vmid *vmp; 282 283 write_lock(&vport->vmid_lock); 284 285 if (!vport->cur_vmid_cnt) 286 goto out; 287 288 /* iterate through the table */ 289 hash_for_each(vport->hash_table, bucket, vmp, hnode) { 290 keep = 0; 291 if (vmp->flag & LPFC_VMID_REGISTERED) { 292 /* check if the particular VMID is in use */ 293 /* for all available per cpu variable */ 294 for_each_possible_cpu(cpu) { 295 /* if last access time is less than timeout */ 296 lta = per_cpu_ptr(vmp->last_io_time, cpu); 297 if (!lta) 298 continue; 299 difftime = (jiffies) - (*lta); 300 if ((vport->vmid_inactivity_timeout * 301 JIFFIES_PER_HR) > difftime) { 302 keep = 1; 303 break; 304 } 305 } 306 307 /* if none of the cpus have been used by the vm, */ 308 /* remove the entry if already registered */ 309 if (!keep) { 310 /* mark the entry for deregistration */ 311 vmp->flag = LPFC_VMID_DE_REGISTER; 312 write_unlock(&vport->vmid_lock); 313 if (vport->vmid_priority_tagging) 314 r = lpfc_vmid_uvem(vport, vmp, false); 315 else 316 r = lpfc_vmid_cmd(vport, 317 SLI_CTAS_DAPP_IDENT, 318 vmp); 319 320 /* decrement number of active vms and mark */ 321 /* entry in slot as free */ 322 write_lock(&vport->vmid_lock); 323 if (!r) { 324 struct lpfc_vmid *ht = vmp; 325 326 vport->cur_vmid_cnt--; 327 ht->flag = LPFC_VMID_SLOT_FREE; 328 free_percpu(ht->last_io_time); 329 ht->last_io_time = NULL; 330 hash_del(&ht->hnode); 331 } 332 } 333 } 334 } 335 out: 336 write_unlock(&vport->vmid_lock); 337 } 338 339 /** 340 * lpfc_check_inactive_vmid - VMID inactivity checker 341 * @phba: Pointer to hba context object. 342 * 343 * This function is called from the worker thread to determine if an entry in 344 * the VMID table can be released since there was no I/O activity seen from that 345 * particular VM for the specified time. When this happens, the entry in the 346 * table is released and also the resources on the switch cleared. 347 **/ 348 349 static void lpfc_check_inactive_vmid(struct lpfc_hba *phba) 350 { 351 struct lpfc_vport *vport; 352 struct lpfc_vport **vports; 353 int i; 354 355 vports = lpfc_create_vport_work_array(phba); 356 if (!vports) 357 return; 358 359 for (i = 0; i <= phba->max_vports; i++) { 360 if ((!vports[i]) && (i == 0)) 361 vport = phba->pport; 362 else 363 vport = vports[i]; 364 if (!vport) 365 break; 366 367 lpfc_check_inactive_vmid_one(vport); 368 } 369 lpfc_destroy_vport_work_array(phba, vports); 370 } 371 372 /** 373 * lpfc_check_nlp_post_devloss - Check to restore ndlp refcnt after devloss 374 * @vport: Pointer to vport object. 375 * @ndlp: Pointer to remote node object. 376 * 377 * If NLP_IN_RECOV_POST_DEV_LOSS flag was set due to outstanding recovery of 378 * node during dev_loss_tmo processing, then this function restores the nlp_put 379 * kref decrement from lpfc_dev_loss_tmo_handler. 380 **/ 381 void 382 lpfc_check_nlp_post_devloss(struct lpfc_vport *vport, 383 struct lpfc_nodelist *ndlp) 384 { 385 unsigned long iflags; 386 387 spin_lock_irqsave(&ndlp->lock, iflags); 388 if (ndlp->save_flags & NLP_IN_RECOV_POST_DEV_LOSS) { 389 ndlp->save_flags &= ~NLP_IN_RECOV_POST_DEV_LOSS; 390 spin_unlock_irqrestore(&ndlp->lock, iflags); 391 lpfc_nlp_get(ndlp); 392 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY | LOG_NODE, 393 "8438 Devloss timeout reversed on DID x%x " 394 "refcnt %d ndlp %p flag x%x " 395 "port_state = x%x\n", 396 ndlp->nlp_DID, kref_read(&ndlp->kref), ndlp, 397 ndlp->nlp_flag, vport->port_state); 398 spin_lock_irqsave(&ndlp->lock, iflags); 399 } 400 spin_unlock_irqrestore(&ndlp->lock, iflags); 401 } 402 403 /** 404 * lpfc_dev_loss_tmo_handler - Remote node devloss timeout handler 405 * @ndlp: Pointer to remote node object. 406 * 407 * This function is called from the worker thread when devloss timeout timer 408 * expires. For SLI4 host, this routine shall return 1 when at lease one 409 * remote node, including this @ndlp, is still in use of FCF; otherwise, this 410 * routine shall return 0 when there is no remote node is still in use of FCF 411 * when devloss timeout happened to this @ndlp. 412 **/ 413 static int 414 lpfc_dev_loss_tmo_handler(struct lpfc_nodelist *ndlp) 415 { 416 struct lpfc_vport *vport; 417 struct lpfc_hba *phba; 418 uint8_t *name; 419 int warn_on = 0; 420 int fcf_inuse = 0; 421 bool recovering = false; 422 struct fc_vport *fc_vport = NULL; 423 unsigned long iflags; 424 425 vport = ndlp->vport; 426 name = (uint8_t *)&ndlp->nlp_portname; 427 phba = vport->phba; 428 429 spin_lock_irqsave(&ndlp->lock, iflags); 430 ndlp->nlp_flag &= ~NLP_IN_DEV_LOSS; 431 spin_unlock_irqrestore(&ndlp->lock, iflags); 432 433 if (phba->sli_rev == LPFC_SLI_REV4) 434 fcf_inuse = lpfc_fcf_inuse(phba); 435 436 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT, 437 "rport devlosstmo:did:x%x type:x%x id:x%x", 438 ndlp->nlp_DID, ndlp->nlp_type, ndlp->nlp_sid); 439 440 lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_NODE, 441 "3182 %s x%06x, nflag x%x xflags x%x refcnt %d\n", 442 __func__, ndlp->nlp_DID, ndlp->nlp_flag, 443 ndlp->fc4_xpt_flags, kref_read(&ndlp->kref)); 444 445 /* If the driver is recovering the rport, ignore devloss. */ 446 if (ndlp->nlp_state == NLP_STE_MAPPED_NODE) { 447 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, 448 "0284 Devloss timeout Ignored on " 449 "WWPN %x:%x:%x:%x:%x:%x:%x:%x " 450 "NPort x%x\n", 451 *name, *(name+1), *(name+2), *(name+3), 452 *(name+4), *(name+5), *(name+6), *(name+7), 453 ndlp->nlp_DID); 454 return fcf_inuse; 455 } 456 457 /* Fabric nodes are done. */ 458 if (ndlp->nlp_type & NLP_FABRIC) { 459 spin_lock_irqsave(&ndlp->lock, iflags); 460 /* In massive vport configuration settings, it's possible 461 * dev_loss_tmo fired during node recovery. So, check if 462 * fabric nodes are in discovery states outstanding. 463 */ 464 switch (ndlp->nlp_DID) { 465 case Fabric_DID: 466 fc_vport = vport->fc_vport; 467 if (fc_vport && 468 fc_vport->vport_state == FC_VPORT_INITIALIZING) 469 recovering = true; 470 break; 471 case Fabric_Cntl_DID: 472 if (ndlp->nlp_flag & NLP_REG_LOGIN_SEND) 473 recovering = true; 474 break; 475 case FDMI_DID: 476 fallthrough; 477 case NameServer_DID: 478 if (ndlp->nlp_state >= NLP_STE_PLOGI_ISSUE && 479 ndlp->nlp_state <= NLP_STE_REG_LOGIN_ISSUE) 480 recovering = true; 481 break; 482 } 483 spin_unlock_irqrestore(&ndlp->lock, iflags); 484 485 /* Mark an NLP_IN_RECOV_POST_DEV_LOSS flag to know if reversing 486 * the following lpfc_nlp_put is necessary after fabric node is 487 * recovered. 488 */ 489 if (recovering) { 490 lpfc_printf_vlog(vport, KERN_INFO, 491 LOG_DISCOVERY | LOG_NODE, 492 "8436 Devloss timeout marked on " 493 "DID x%x refcnt %d ndlp %p " 494 "flag x%x port_state = x%x\n", 495 ndlp->nlp_DID, kref_read(&ndlp->kref), 496 ndlp, ndlp->nlp_flag, 497 vport->port_state); 498 spin_lock_irqsave(&ndlp->lock, iflags); 499 ndlp->save_flags |= NLP_IN_RECOV_POST_DEV_LOSS; 500 spin_unlock_irqrestore(&ndlp->lock, iflags); 501 } else if (ndlp->nlp_state == NLP_STE_UNMAPPED_NODE) { 502 /* Fabric node fully recovered before this dev_loss_tmo 503 * queue work is processed. Thus, ignore the 504 * dev_loss_tmo event. 505 */ 506 lpfc_printf_vlog(vport, KERN_INFO, 507 LOG_DISCOVERY | LOG_NODE, 508 "8437 Devloss timeout ignored on " 509 "DID x%x refcnt %d ndlp %p " 510 "flag x%x port_state = x%x\n", 511 ndlp->nlp_DID, kref_read(&ndlp->kref), 512 ndlp, ndlp->nlp_flag, 513 vport->port_state); 514 return fcf_inuse; 515 } 516 517 lpfc_nlp_put(ndlp); 518 return fcf_inuse; 519 } 520 521 if (ndlp->nlp_sid != NLP_NO_SID) { 522 warn_on = 1; 523 lpfc_sli_abort_iocb(vport, ndlp->nlp_sid, 0, LPFC_CTX_TGT); 524 } 525 526 if (warn_on) { 527 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 528 "0203 Devloss timeout on " 529 "WWPN %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x " 530 "NPort x%06x Data: x%x x%x x%x refcnt %d\n", 531 *name, *(name+1), *(name+2), *(name+3), 532 *(name+4), *(name+5), *(name+6), *(name+7), 533 ndlp->nlp_DID, ndlp->nlp_flag, 534 ndlp->nlp_state, ndlp->nlp_rpi, 535 kref_read(&ndlp->kref)); 536 } else { 537 lpfc_printf_vlog(vport, KERN_INFO, LOG_TRACE_EVENT, 538 "0204 Devloss timeout on " 539 "WWPN %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x " 540 "NPort x%06x Data: x%x x%x x%x\n", 541 *name, *(name+1), *(name+2), *(name+3), 542 *(name+4), *(name+5), *(name+6), *(name+7), 543 ndlp->nlp_DID, ndlp->nlp_flag, 544 ndlp->nlp_state, ndlp->nlp_rpi); 545 } 546 547 /* If we are devloss, but we are in the process of rediscovering the 548 * ndlp, don't issue a NLP_EVT_DEVICE_RM event. 549 */ 550 if (ndlp->nlp_state >= NLP_STE_PLOGI_ISSUE && 551 ndlp->nlp_state <= NLP_STE_PRLI_ISSUE) { 552 return fcf_inuse; 553 } 554 555 if (!(ndlp->fc4_xpt_flags & NVME_XPT_REGD)) 556 lpfc_disc_state_machine(vport, ndlp, NULL, NLP_EVT_DEVICE_RM); 557 558 return fcf_inuse; 559 } 560 561 static void lpfc_check_vmid_qfpa_issue(struct lpfc_hba *phba) 562 { 563 struct lpfc_vport *vport; 564 struct lpfc_vport **vports; 565 int i; 566 567 vports = lpfc_create_vport_work_array(phba); 568 if (!vports) 569 return; 570 571 for (i = 0; i <= phba->max_vports; i++) { 572 if ((!vports[i]) && (i == 0)) 573 vport = phba->pport; 574 else 575 vport = vports[i]; 576 if (!vport) 577 break; 578 579 if (vport->vmid_flag & LPFC_VMID_ISSUE_QFPA) { 580 if (!lpfc_issue_els_qfpa(vport)) 581 vport->vmid_flag &= ~LPFC_VMID_ISSUE_QFPA; 582 } 583 } 584 lpfc_destroy_vport_work_array(phba, vports); 585 } 586 587 /** 588 * lpfc_sli4_post_dev_loss_tmo_handler - SLI4 post devloss timeout handler 589 * @phba: Pointer to hba context object. 590 * @fcf_inuse: SLI4 FCF in-use state reported from devloss timeout handler. 591 * @nlp_did: remote node identifer with devloss timeout. 592 * 593 * This function is called from the worker thread after invoking devloss 594 * timeout handler and releasing the reference count for the ndlp with 595 * which the devloss timeout was handled for SLI4 host. For the devloss 596 * timeout of the last remote node which had been in use of FCF, when this 597 * routine is invoked, it shall be guaranteed that none of the remote are 598 * in-use of FCF. When devloss timeout to the last remote using the FCF, 599 * if the FIP engine is neither in FCF table scan process nor roundrobin 600 * failover process, the in-use FCF shall be unregistered. If the FIP 601 * engine is in FCF discovery process, the devloss timeout state shall 602 * be set for either the FCF table scan process or roundrobin failover 603 * process to unregister the in-use FCF. 604 **/ 605 static void 606 lpfc_sli4_post_dev_loss_tmo_handler(struct lpfc_hba *phba, int fcf_inuse, 607 uint32_t nlp_did) 608 { 609 /* If devloss timeout happened to a remote node when FCF had no 610 * longer been in-use, do nothing. 611 */ 612 if (!fcf_inuse) 613 return; 614 615 if ((phba->hba_flag & HBA_FIP_SUPPORT) && !lpfc_fcf_inuse(phba)) { 616 spin_lock_irq(&phba->hbalock); 617 if (phba->fcf.fcf_flag & FCF_DISCOVERY) { 618 if (phba->hba_flag & HBA_DEVLOSS_TMO) { 619 spin_unlock_irq(&phba->hbalock); 620 return; 621 } 622 phba->hba_flag |= HBA_DEVLOSS_TMO; 623 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 624 "2847 Last remote node (x%x) using " 625 "FCF devloss tmo\n", nlp_did); 626 } 627 if (phba->fcf.fcf_flag & FCF_REDISC_PROG) { 628 spin_unlock_irq(&phba->hbalock); 629 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 630 "2868 Devloss tmo to FCF rediscovery " 631 "in progress\n"); 632 return; 633 } 634 if (!(phba->hba_flag & (FCF_TS_INPROG | FCF_RR_INPROG))) { 635 spin_unlock_irq(&phba->hbalock); 636 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 637 "2869 Devloss tmo to idle FIP engine, " 638 "unreg in-use FCF and rescan.\n"); 639 /* Unregister in-use FCF and rescan */ 640 lpfc_unregister_fcf_rescan(phba); 641 return; 642 } 643 spin_unlock_irq(&phba->hbalock); 644 if (phba->hba_flag & FCF_TS_INPROG) 645 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 646 "2870 FCF table scan in progress\n"); 647 if (phba->hba_flag & FCF_RR_INPROG) 648 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 649 "2871 FLOGI roundrobin FCF failover " 650 "in progress\n"); 651 } 652 lpfc_unregister_unused_fcf(phba); 653 } 654 655 /** 656 * lpfc_alloc_fast_evt - Allocates data structure for posting event 657 * @phba: Pointer to hba context object. 658 * 659 * This function is called from the functions which need to post 660 * events from interrupt context. This function allocates data 661 * structure required for posting event. It also keeps track of 662 * number of events pending and prevent event storm when there are 663 * too many events. 664 **/ 665 struct lpfc_fast_path_event * 666 lpfc_alloc_fast_evt(struct lpfc_hba *phba) { 667 struct lpfc_fast_path_event *ret; 668 669 /* If there are lot of fast event do not exhaust memory due to this */ 670 if (atomic_read(&phba->fast_event_count) > LPFC_MAX_EVT_COUNT) 671 return NULL; 672 673 ret = kzalloc(sizeof(struct lpfc_fast_path_event), 674 GFP_ATOMIC); 675 if (ret) { 676 atomic_inc(&phba->fast_event_count); 677 INIT_LIST_HEAD(&ret->work_evt.evt_listp); 678 ret->work_evt.evt = LPFC_EVT_FASTPATH_MGMT_EVT; 679 } 680 return ret; 681 } 682 683 /** 684 * lpfc_free_fast_evt - Frees event data structure 685 * @phba: Pointer to hba context object. 686 * @evt: Event object which need to be freed. 687 * 688 * This function frees the data structure required for posting 689 * events. 690 **/ 691 void 692 lpfc_free_fast_evt(struct lpfc_hba *phba, 693 struct lpfc_fast_path_event *evt) { 694 695 atomic_dec(&phba->fast_event_count); 696 kfree(evt); 697 } 698 699 /** 700 * lpfc_send_fastpath_evt - Posts events generated from fast path 701 * @phba: Pointer to hba context object. 702 * @evtp: Event data structure. 703 * 704 * This function is called from worker thread, when the interrupt 705 * context need to post an event. This function posts the event 706 * to fc transport netlink interface. 707 **/ 708 static void 709 lpfc_send_fastpath_evt(struct lpfc_hba *phba, 710 struct lpfc_work_evt *evtp) 711 { 712 unsigned long evt_category, evt_sub_category; 713 struct lpfc_fast_path_event *fast_evt_data; 714 char *evt_data; 715 uint32_t evt_data_size; 716 struct Scsi_Host *shost; 717 718 fast_evt_data = container_of(evtp, struct lpfc_fast_path_event, 719 work_evt); 720 721 evt_category = (unsigned long) fast_evt_data->un.fabric_evt.event_type; 722 evt_sub_category = (unsigned long) fast_evt_data->un. 723 fabric_evt.subcategory; 724 shost = lpfc_shost_from_vport(fast_evt_data->vport); 725 if (evt_category == FC_REG_FABRIC_EVENT) { 726 if (evt_sub_category == LPFC_EVENT_FCPRDCHKERR) { 727 evt_data = (char *) &fast_evt_data->un.read_check_error; 728 evt_data_size = sizeof(fast_evt_data->un. 729 read_check_error); 730 } else if ((evt_sub_category == LPFC_EVENT_FABRIC_BUSY) || 731 (evt_sub_category == LPFC_EVENT_PORT_BUSY)) { 732 evt_data = (char *) &fast_evt_data->un.fabric_evt; 733 evt_data_size = sizeof(fast_evt_data->un.fabric_evt); 734 } else { 735 lpfc_free_fast_evt(phba, fast_evt_data); 736 return; 737 } 738 } else if (evt_category == FC_REG_SCSI_EVENT) { 739 switch (evt_sub_category) { 740 case LPFC_EVENT_QFULL: 741 case LPFC_EVENT_DEVBSY: 742 evt_data = (char *) &fast_evt_data->un.scsi_evt; 743 evt_data_size = sizeof(fast_evt_data->un.scsi_evt); 744 break; 745 case LPFC_EVENT_CHECK_COND: 746 evt_data = (char *) &fast_evt_data->un.check_cond_evt; 747 evt_data_size = sizeof(fast_evt_data->un. 748 check_cond_evt); 749 break; 750 case LPFC_EVENT_VARQUEDEPTH: 751 evt_data = (char *) &fast_evt_data->un.queue_depth_evt; 752 evt_data_size = sizeof(fast_evt_data->un. 753 queue_depth_evt); 754 break; 755 default: 756 lpfc_free_fast_evt(phba, fast_evt_data); 757 return; 758 } 759 } else { 760 lpfc_free_fast_evt(phba, fast_evt_data); 761 return; 762 } 763 764 if (phba->cfg_enable_fc4_type != LPFC_ENABLE_NVME) 765 fc_host_post_vendor_event(shost, 766 fc_get_event_number(), 767 evt_data_size, 768 evt_data, 769 LPFC_NL_VENDOR_ID); 770 771 lpfc_free_fast_evt(phba, fast_evt_data); 772 return; 773 } 774 775 static void 776 lpfc_work_list_done(struct lpfc_hba *phba) 777 { 778 struct lpfc_work_evt *evtp = NULL; 779 struct lpfc_nodelist *ndlp; 780 int free_evt; 781 int fcf_inuse; 782 uint32_t nlp_did; 783 bool hba_pci_err; 784 785 spin_lock_irq(&phba->hbalock); 786 while (!list_empty(&phba->work_list)) { 787 list_remove_head((&phba->work_list), evtp, typeof(*evtp), 788 evt_listp); 789 spin_unlock_irq(&phba->hbalock); 790 hba_pci_err = test_bit(HBA_PCI_ERR, &phba->bit_flags); 791 free_evt = 1; 792 switch (evtp->evt) { 793 case LPFC_EVT_ELS_RETRY: 794 ndlp = (struct lpfc_nodelist *) (evtp->evt_arg1); 795 if (!hba_pci_err) { 796 lpfc_els_retry_delay_handler(ndlp); 797 free_evt = 0; /* evt is part of ndlp */ 798 } 799 /* decrement the node reference count held 800 * for this queued work 801 */ 802 lpfc_nlp_put(ndlp); 803 break; 804 case LPFC_EVT_DEV_LOSS: 805 ndlp = (struct lpfc_nodelist *)(evtp->evt_arg1); 806 fcf_inuse = lpfc_dev_loss_tmo_handler(ndlp); 807 free_evt = 0; 808 /* decrement the node reference count held for 809 * this queued work 810 */ 811 nlp_did = ndlp->nlp_DID; 812 lpfc_nlp_put(ndlp); 813 if (phba->sli_rev == LPFC_SLI_REV4) 814 lpfc_sli4_post_dev_loss_tmo_handler(phba, 815 fcf_inuse, 816 nlp_did); 817 break; 818 case LPFC_EVT_RECOVER_PORT: 819 ndlp = (struct lpfc_nodelist *)(evtp->evt_arg1); 820 if (!hba_pci_err) { 821 lpfc_sli_abts_recover_port(ndlp->vport, ndlp); 822 free_evt = 0; 823 } 824 /* decrement the node reference count held for 825 * this queued work 826 */ 827 lpfc_nlp_put(ndlp); 828 break; 829 case LPFC_EVT_ONLINE: 830 if (phba->link_state < LPFC_LINK_DOWN) 831 *(int *) (evtp->evt_arg1) = lpfc_online(phba); 832 else 833 *(int *) (evtp->evt_arg1) = 0; 834 complete((struct completion *)(evtp->evt_arg2)); 835 break; 836 case LPFC_EVT_OFFLINE_PREP: 837 if (phba->link_state >= LPFC_LINK_DOWN) 838 lpfc_offline_prep(phba, LPFC_MBX_WAIT); 839 *(int *)(evtp->evt_arg1) = 0; 840 complete((struct completion *)(evtp->evt_arg2)); 841 break; 842 case LPFC_EVT_OFFLINE: 843 lpfc_offline(phba); 844 lpfc_sli_brdrestart(phba); 845 *(int *)(evtp->evt_arg1) = 846 lpfc_sli_brdready(phba, HS_FFRDY | HS_MBRDY); 847 lpfc_unblock_mgmt_io(phba); 848 complete((struct completion *)(evtp->evt_arg2)); 849 break; 850 case LPFC_EVT_WARM_START: 851 lpfc_offline(phba); 852 lpfc_reset_barrier(phba); 853 lpfc_sli_brdreset(phba); 854 lpfc_hba_down_post(phba); 855 *(int *)(evtp->evt_arg1) = 856 lpfc_sli_brdready(phba, HS_MBRDY); 857 lpfc_unblock_mgmt_io(phba); 858 complete((struct completion *)(evtp->evt_arg2)); 859 break; 860 case LPFC_EVT_KILL: 861 lpfc_offline(phba); 862 *(int *)(evtp->evt_arg1) 863 = (phba->pport->stopped) 864 ? 0 : lpfc_sli_brdkill(phba); 865 lpfc_unblock_mgmt_io(phba); 866 complete((struct completion *)(evtp->evt_arg2)); 867 break; 868 case LPFC_EVT_FASTPATH_MGMT_EVT: 869 lpfc_send_fastpath_evt(phba, evtp); 870 free_evt = 0; 871 break; 872 case LPFC_EVT_RESET_HBA: 873 if (!(phba->pport->load_flag & FC_UNLOADING)) 874 lpfc_reset_hba(phba); 875 break; 876 } 877 if (free_evt) 878 kfree(evtp); 879 spin_lock_irq(&phba->hbalock); 880 } 881 spin_unlock_irq(&phba->hbalock); 882 883 } 884 885 static void 886 lpfc_work_done(struct lpfc_hba *phba) 887 { 888 struct lpfc_sli_ring *pring; 889 uint32_t ha_copy, status, control, work_port_events; 890 struct lpfc_vport **vports; 891 struct lpfc_vport *vport; 892 int i; 893 bool hba_pci_err; 894 895 hba_pci_err = test_bit(HBA_PCI_ERR, &phba->bit_flags); 896 spin_lock_irq(&phba->hbalock); 897 ha_copy = phba->work_ha; 898 phba->work_ha = 0; 899 spin_unlock_irq(&phba->hbalock); 900 if (hba_pci_err) 901 ha_copy = 0; 902 903 /* First, try to post the next mailbox command to SLI4 device */ 904 if (phba->pci_dev_grp == LPFC_PCI_DEV_OC && !hba_pci_err) 905 lpfc_sli4_post_async_mbox(phba); 906 907 if (ha_copy & HA_ERATT) { 908 /* Handle the error attention event */ 909 lpfc_handle_eratt(phba); 910 911 if (phba->fw_dump_cmpl) { 912 complete(phba->fw_dump_cmpl); 913 phba->fw_dump_cmpl = NULL; 914 } 915 } 916 917 if (ha_copy & HA_MBATT) 918 lpfc_sli_handle_mb_event(phba); 919 920 if (ha_copy & HA_LATT) 921 lpfc_handle_latt(phba); 922 923 /* Handle VMID Events */ 924 if (lpfc_is_vmid_enabled(phba) && !hba_pci_err) { 925 if (phba->pport->work_port_events & 926 WORKER_CHECK_VMID_ISSUE_QFPA) { 927 lpfc_check_vmid_qfpa_issue(phba); 928 phba->pport->work_port_events &= 929 ~WORKER_CHECK_VMID_ISSUE_QFPA; 930 } 931 if (phba->pport->work_port_events & 932 WORKER_CHECK_INACTIVE_VMID) { 933 lpfc_check_inactive_vmid(phba); 934 phba->pport->work_port_events &= 935 ~WORKER_CHECK_INACTIVE_VMID; 936 } 937 } 938 939 /* Process SLI4 events */ 940 if (phba->pci_dev_grp == LPFC_PCI_DEV_OC) { 941 if (phba->hba_flag & HBA_RRQ_ACTIVE) 942 lpfc_handle_rrq_active(phba); 943 if (phba->hba_flag & ELS_XRI_ABORT_EVENT) 944 lpfc_sli4_els_xri_abort_event_proc(phba); 945 if (phba->hba_flag & ASYNC_EVENT) 946 lpfc_sli4_async_event_proc(phba); 947 if (phba->hba_flag & HBA_POST_RECEIVE_BUFFER) { 948 spin_lock_irq(&phba->hbalock); 949 phba->hba_flag &= ~HBA_POST_RECEIVE_BUFFER; 950 spin_unlock_irq(&phba->hbalock); 951 lpfc_sli_hbqbuf_add_hbqs(phba, LPFC_ELS_HBQ); 952 } 953 if (phba->fcf.fcf_flag & FCF_REDISC_EVT) 954 lpfc_sli4_fcf_redisc_event_proc(phba); 955 } 956 957 vports = lpfc_create_vport_work_array(phba); 958 if (vports != NULL) 959 for (i = 0; i <= phba->max_vports; i++) { 960 /* 961 * We could have no vports in array if unloading, so if 962 * this happens then just use the pport 963 */ 964 if (vports[i] == NULL && i == 0) 965 vport = phba->pport; 966 else 967 vport = vports[i]; 968 if (vport == NULL) 969 break; 970 spin_lock_irq(&vport->work_port_lock); 971 work_port_events = vport->work_port_events; 972 vport->work_port_events &= ~work_port_events; 973 spin_unlock_irq(&vport->work_port_lock); 974 if (hba_pci_err) 975 continue; 976 if (work_port_events & WORKER_DISC_TMO) 977 lpfc_disc_timeout_handler(vport); 978 if (work_port_events & WORKER_ELS_TMO) 979 lpfc_els_timeout_handler(vport); 980 if (work_port_events & WORKER_HB_TMO) 981 lpfc_hb_timeout_handler(phba); 982 if (work_port_events & WORKER_MBOX_TMO) 983 lpfc_mbox_timeout_handler(phba); 984 if (work_port_events & WORKER_FABRIC_BLOCK_TMO) 985 lpfc_unblock_fabric_iocbs(phba); 986 if (work_port_events & WORKER_RAMP_DOWN_QUEUE) 987 lpfc_ramp_down_queue_handler(phba); 988 if (work_port_events & WORKER_DELAYED_DISC_TMO) 989 lpfc_delayed_disc_timeout_handler(vport); 990 } 991 lpfc_destroy_vport_work_array(phba, vports); 992 993 pring = lpfc_phba_elsring(phba); 994 status = (ha_copy & (HA_RXMASK << (4*LPFC_ELS_RING))); 995 status >>= (4*LPFC_ELS_RING); 996 if (pring && (status & HA_RXMASK || 997 pring->flag & LPFC_DEFERRED_RING_EVENT || 998 phba->hba_flag & HBA_SP_QUEUE_EVT)) { 999 if (pring->flag & LPFC_STOP_IOCB_EVENT) { 1000 pring->flag |= LPFC_DEFERRED_RING_EVENT; 1001 /* Preserve legacy behavior. */ 1002 if (!(phba->hba_flag & HBA_SP_QUEUE_EVT)) 1003 set_bit(LPFC_DATA_READY, &phba->data_flags); 1004 } else { 1005 /* Driver could have abort request completed in queue 1006 * when link goes down. Allow for this transition. 1007 */ 1008 if (phba->link_state >= LPFC_LINK_DOWN || 1009 phba->link_flag & LS_MDS_LOOPBACK) { 1010 pring->flag &= ~LPFC_DEFERRED_RING_EVENT; 1011 lpfc_sli_handle_slow_ring_event(phba, pring, 1012 (status & 1013 HA_RXMASK)); 1014 } 1015 } 1016 if (phba->sli_rev == LPFC_SLI_REV4) 1017 lpfc_drain_txq(phba); 1018 /* 1019 * Turn on Ring interrupts 1020 */ 1021 if (phba->sli_rev <= LPFC_SLI_REV3) { 1022 spin_lock_irq(&phba->hbalock); 1023 control = readl(phba->HCregaddr); 1024 if (!(control & (HC_R0INT_ENA << LPFC_ELS_RING))) { 1025 lpfc_debugfs_slow_ring_trc(phba, 1026 "WRK Enable ring: cntl:x%x hacopy:x%x", 1027 control, ha_copy, 0); 1028 1029 control |= (HC_R0INT_ENA << LPFC_ELS_RING); 1030 writel(control, phba->HCregaddr); 1031 readl(phba->HCregaddr); /* flush */ 1032 } else { 1033 lpfc_debugfs_slow_ring_trc(phba, 1034 "WRK Ring ok: cntl:x%x hacopy:x%x", 1035 control, ha_copy, 0); 1036 } 1037 spin_unlock_irq(&phba->hbalock); 1038 } 1039 } 1040 lpfc_work_list_done(phba); 1041 } 1042 1043 int 1044 lpfc_do_work(void *p) 1045 { 1046 struct lpfc_hba *phba = p; 1047 int rc; 1048 1049 set_user_nice(current, MIN_NICE); 1050 current->flags |= PF_NOFREEZE; 1051 phba->data_flags = 0; 1052 1053 while (!kthread_should_stop()) { 1054 /* wait and check worker queue activities */ 1055 rc = wait_event_interruptible(phba->work_waitq, 1056 (test_and_clear_bit(LPFC_DATA_READY, 1057 &phba->data_flags) 1058 || kthread_should_stop())); 1059 /* Signal wakeup shall terminate the worker thread */ 1060 if (rc) { 1061 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 1062 "0433 Wakeup on signal: rc=x%x\n", rc); 1063 break; 1064 } 1065 1066 /* Attend pending lpfc data processing */ 1067 lpfc_work_done(phba); 1068 } 1069 phba->worker_thread = NULL; 1070 lpfc_printf_log(phba, KERN_INFO, LOG_ELS, 1071 "0432 Worker thread stopped.\n"); 1072 return 0; 1073 } 1074 1075 /* 1076 * This is only called to handle FC worker events. Since this a rare 1077 * occurrence, we allocate a struct lpfc_work_evt structure here instead of 1078 * embedding it in the IOCB. 1079 */ 1080 int 1081 lpfc_workq_post_event(struct lpfc_hba *phba, void *arg1, void *arg2, 1082 uint32_t evt) 1083 { 1084 struct lpfc_work_evt *evtp; 1085 unsigned long flags; 1086 1087 /* 1088 * All Mailbox completions and LPFC_ELS_RING rcv ring IOCB events will 1089 * be queued to worker thread for processing 1090 */ 1091 evtp = kmalloc(sizeof(struct lpfc_work_evt), GFP_ATOMIC); 1092 if (!evtp) 1093 return 0; 1094 1095 evtp->evt_arg1 = arg1; 1096 evtp->evt_arg2 = arg2; 1097 evtp->evt = evt; 1098 1099 spin_lock_irqsave(&phba->hbalock, flags); 1100 list_add_tail(&evtp->evt_listp, &phba->work_list); 1101 spin_unlock_irqrestore(&phba->hbalock, flags); 1102 1103 lpfc_worker_wake_up(phba); 1104 1105 return 1; 1106 } 1107 1108 void 1109 lpfc_cleanup_rpis(struct lpfc_vport *vport, int remove) 1110 { 1111 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 1112 struct lpfc_hba *phba = vport->phba; 1113 struct lpfc_nodelist *ndlp, *next_ndlp; 1114 1115 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) { 1116 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE) { 1117 /* It's possible the FLOGI to the fabric node never 1118 * successfully completed and never registered with the 1119 * transport. In this case there is no way to clean up 1120 * the node. 1121 */ 1122 if (ndlp->nlp_DID == Fabric_DID) { 1123 if (ndlp->nlp_prev_state == 1124 NLP_STE_UNUSED_NODE && 1125 !ndlp->fc4_xpt_flags) 1126 lpfc_nlp_put(ndlp); 1127 } 1128 continue; 1129 } 1130 1131 if ((phba->sli3_options & LPFC_SLI3_VPORT_TEARDOWN) || 1132 ((vport->port_type == LPFC_NPIV_PORT) && 1133 ((ndlp->nlp_DID == NameServer_DID) || 1134 (ndlp->nlp_DID == FDMI_DID) || 1135 (ndlp->nlp_DID == Fabric_Cntl_DID)))) 1136 lpfc_unreg_rpi(vport, ndlp); 1137 1138 /* Leave Fabric nodes alone on link down */ 1139 if ((phba->sli_rev < LPFC_SLI_REV4) && 1140 (!remove && ndlp->nlp_type & NLP_FABRIC)) 1141 continue; 1142 1143 /* Notify transport of connectivity loss to trigger cleanup. */ 1144 if (phba->nvmet_support && 1145 ndlp->nlp_state == NLP_STE_UNMAPPED_NODE) 1146 lpfc_nvmet_invalidate_host(phba, ndlp); 1147 1148 lpfc_disc_state_machine(vport, ndlp, NULL, 1149 remove 1150 ? NLP_EVT_DEVICE_RM 1151 : NLP_EVT_DEVICE_RECOVERY); 1152 } 1153 if (phba->sli3_options & LPFC_SLI3_VPORT_TEARDOWN) { 1154 if (phba->sli_rev == LPFC_SLI_REV4) 1155 lpfc_sli4_unreg_all_rpis(vport); 1156 lpfc_mbx_unreg_vpi(vport); 1157 spin_lock_irq(shost->host_lock); 1158 vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI; 1159 spin_unlock_irq(shost->host_lock); 1160 } 1161 } 1162 1163 void 1164 lpfc_port_link_failure(struct lpfc_vport *vport) 1165 { 1166 lpfc_vport_set_state(vport, FC_VPORT_LINKDOWN); 1167 1168 /* Cleanup any outstanding received buffers */ 1169 lpfc_cleanup_rcv_buffers(vport); 1170 1171 /* Cleanup any outstanding RSCN activity */ 1172 lpfc_els_flush_rscn(vport); 1173 1174 /* Cleanup any outstanding ELS commands */ 1175 lpfc_els_flush_cmd(vport); 1176 1177 lpfc_cleanup_rpis(vport, 0); 1178 1179 /* Turn off discovery timer if its running */ 1180 lpfc_can_disctmo(vport); 1181 } 1182 1183 void 1184 lpfc_linkdown_port(struct lpfc_vport *vport) 1185 { 1186 struct lpfc_hba *phba = vport->phba; 1187 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 1188 1189 if (vport->cfg_enable_fc4_type != LPFC_ENABLE_NVME) 1190 fc_host_post_event(shost, fc_get_event_number(), 1191 FCH_EVT_LINKDOWN, 0); 1192 1193 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, 1194 "Link Down: state:x%x rtry:x%x flg:x%x", 1195 vport->port_state, vport->fc_ns_retry, vport->fc_flag); 1196 1197 lpfc_port_link_failure(vport); 1198 1199 /* Stop delayed Nport discovery */ 1200 spin_lock_irq(shost->host_lock); 1201 vport->fc_flag &= ~FC_DISC_DELAYED; 1202 spin_unlock_irq(shost->host_lock); 1203 del_timer_sync(&vport->delayed_disc_tmo); 1204 1205 if (phba->sli_rev == LPFC_SLI_REV4 && 1206 vport->port_type == LPFC_PHYSICAL_PORT && 1207 phba->sli4_hba.fawwpn_flag & LPFC_FAWWPN_CONFIG) { 1208 /* Assume success on link up */ 1209 phba->sli4_hba.fawwpn_flag |= LPFC_FAWWPN_FABRIC; 1210 } 1211 } 1212 1213 int 1214 lpfc_linkdown(struct lpfc_hba *phba) 1215 { 1216 struct lpfc_vport *vport = phba->pport; 1217 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 1218 struct lpfc_vport **vports; 1219 LPFC_MBOXQ_t *mb; 1220 int i; 1221 int offline; 1222 1223 if (phba->link_state == LPFC_LINK_DOWN) 1224 return 0; 1225 1226 /* Block all SCSI stack I/Os */ 1227 lpfc_scsi_dev_block(phba); 1228 offline = pci_channel_offline(phba->pcidev); 1229 1230 phba->defer_flogi_acc_flag = false; 1231 1232 /* Clear external loopback plug detected flag */ 1233 phba->link_flag &= ~LS_EXTERNAL_LOOPBACK; 1234 1235 spin_lock_irq(&phba->hbalock); 1236 phba->fcf.fcf_flag &= ~(FCF_AVAILABLE | FCF_SCAN_DONE); 1237 spin_unlock_irq(&phba->hbalock); 1238 if (phba->link_state > LPFC_LINK_DOWN) { 1239 phba->link_state = LPFC_LINK_DOWN; 1240 if (phba->sli4_hba.conf_trunk) { 1241 phba->trunk_link.link0.state = 0; 1242 phba->trunk_link.link1.state = 0; 1243 phba->trunk_link.link2.state = 0; 1244 phba->trunk_link.link3.state = 0; 1245 phba->sli4_hba.link_state.logical_speed = 1246 LPFC_LINK_SPEED_UNKNOWN; 1247 } 1248 spin_lock_irq(shost->host_lock); 1249 phba->pport->fc_flag &= ~FC_LBIT; 1250 spin_unlock_irq(shost->host_lock); 1251 } 1252 vports = lpfc_create_vport_work_array(phba); 1253 if (vports != NULL) { 1254 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) { 1255 /* Issue a LINK DOWN event to all nodes */ 1256 lpfc_linkdown_port(vports[i]); 1257 1258 vports[i]->fc_myDID = 0; 1259 1260 if ((vport->cfg_enable_fc4_type == LPFC_ENABLE_BOTH) || 1261 (vport->cfg_enable_fc4_type == LPFC_ENABLE_NVME)) { 1262 if (phba->nvmet_support) 1263 lpfc_nvmet_update_targetport(phba); 1264 else 1265 lpfc_nvme_update_localport(vports[i]); 1266 } 1267 } 1268 } 1269 lpfc_destroy_vport_work_array(phba, vports); 1270 1271 /* Clean up any SLI3 firmware default rpi's */ 1272 if (phba->sli_rev > LPFC_SLI_REV3 || offline) 1273 goto skip_unreg_did; 1274 1275 mb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 1276 if (mb) { 1277 lpfc_unreg_did(phba, 0xffff, LPFC_UNREG_ALL_DFLT_RPIS, mb); 1278 mb->vport = vport; 1279 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl; 1280 if (lpfc_sli_issue_mbox(phba, mb, MBX_NOWAIT) 1281 == MBX_NOT_FINISHED) { 1282 mempool_free(mb, phba->mbox_mem_pool); 1283 } 1284 } 1285 1286 skip_unreg_did: 1287 /* Setup myDID for link up if we are in pt2pt mode */ 1288 if (phba->pport->fc_flag & FC_PT2PT) { 1289 mb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 1290 if (mb) { 1291 lpfc_config_link(phba, mb); 1292 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl; 1293 mb->vport = vport; 1294 if (lpfc_sli_issue_mbox(phba, mb, MBX_NOWAIT) 1295 == MBX_NOT_FINISHED) { 1296 mempool_free(mb, phba->mbox_mem_pool); 1297 } 1298 } 1299 spin_lock_irq(shost->host_lock); 1300 phba->pport->fc_flag &= ~(FC_PT2PT | FC_PT2PT_PLOGI); 1301 phba->pport->rcv_flogi_cnt = 0; 1302 spin_unlock_irq(shost->host_lock); 1303 } 1304 return 0; 1305 } 1306 1307 static void 1308 lpfc_linkup_cleanup_nodes(struct lpfc_vport *vport) 1309 { 1310 struct lpfc_nodelist *ndlp; 1311 1312 list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) { 1313 ndlp->nlp_fc4_type &= ~(NLP_FC4_FCP | NLP_FC4_NVME); 1314 1315 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE) 1316 continue; 1317 if (ndlp->nlp_type & NLP_FABRIC) { 1318 /* On Linkup its safe to clean up the ndlp 1319 * from Fabric connections. 1320 */ 1321 if (ndlp->nlp_DID != Fabric_DID) 1322 lpfc_unreg_rpi(vport, ndlp); 1323 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE); 1324 } else if (!(ndlp->nlp_flag & NLP_NPR_ADISC)) { 1325 /* Fail outstanding IO now since device is 1326 * marked for PLOGI. 1327 */ 1328 lpfc_unreg_rpi(vport, ndlp); 1329 } 1330 } 1331 } 1332 1333 static void 1334 lpfc_linkup_port(struct lpfc_vport *vport) 1335 { 1336 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 1337 struct lpfc_hba *phba = vport->phba; 1338 1339 if ((vport->load_flag & FC_UNLOADING) != 0) 1340 return; 1341 1342 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, 1343 "Link Up: top:x%x speed:x%x flg:x%x", 1344 phba->fc_topology, phba->fc_linkspeed, phba->link_flag); 1345 1346 /* If NPIV is not enabled, only bring the physical port up */ 1347 if (!(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) && 1348 (vport != phba->pport)) 1349 return; 1350 1351 if (vport->cfg_enable_fc4_type != LPFC_ENABLE_NVME) 1352 fc_host_post_event(shost, fc_get_event_number(), 1353 FCH_EVT_LINKUP, 0); 1354 1355 spin_lock_irq(shost->host_lock); 1356 vport->fc_flag &= ~(FC_PT2PT | FC_PT2PT_PLOGI | FC_ABORT_DISCOVERY | 1357 FC_RSCN_MEMENTO | FC_RSCN_MODE | 1358 FC_NLP_MORE | FC_RSCN_DISCOVERY); 1359 vport->fc_flag |= FC_NDISC_ACTIVE; 1360 vport->fc_ns_retry = 0; 1361 spin_unlock_irq(shost->host_lock); 1362 lpfc_setup_fdmi_mask(vport); 1363 1364 lpfc_linkup_cleanup_nodes(vport); 1365 } 1366 1367 static int 1368 lpfc_linkup(struct lpfc_hba *phba) 1369 { 1370 struct lpfc_vport **vports; 1371 int i; 1372 struct Scsi_Host *shost = lpfc_shost_from_vport(phba->pport); 1373 1374 phba->link_state = LPFC_LINK_UP; 1375 1376 /* Unblock fabric iocbs if they are blocked */ 1377 clear_bit(FABRIC_COMANDS_BLOCKED, &phba->bit_flags); 1378 del_timer_sync(&phba->fabric_block_timer); 1379 1380 vports = lpfc_create_vport_work_array(phba); 1381 if (vports != NULL) 1382 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) 1383 lpfc_linkup_port(vports[i]); 1384 lpfc_destroy_vport_work_array(phba, vports); 1385 1386 /* Clear the pport flogi counter in case the link down was 1387 * absorbed without an ACQE. No lock here - in worker thread 1388 * and discovery is synchronized. 1389 */ 1390 spin_lock_irq(shost->host_lock); 1391 phba->pport->rcv_flogi_cnt = 0; 1392 spin_unlock_irq(shost->host_lock); 1393 1394 /* reinitialize initial HBA flag */ 1395 phba->hba_flag &= ~(HBA_FLOGI_ISSUED | HBA_RHBA_CMPL); 1396 phba->defer_flogi_acc_flag = false; 1397 1398 return 0; 1399 } 1400 1401 /* 1402 * This routine handles processing a CLEAR_LA mailbox 1403 * command upon completion. It is setup in the LPFC_MBOXQ 1404 * as the completion routine when the command is 1405 * handed off to the SLI layer. SLI3 only. 1406 */ 1407 static void 1408 lpfc_mbx_cmpl_clear_la(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 1409 { 1410 struct lpfc_vport *vport = pmb->vport; 1411 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 1412 struct lpfc_sli *psli = &phba->sli; 1413 MAILBOX_t *mb = &pmb->u.mb; 1414 uint32_t control; 1415 1416 /* Since we don't do discovery right now, turn these off here */ 1417 psli->sli3_ring[LPFC_EXTRA_RING].flag &= ~LPFC_STOP_IOCB_EVENT; 1418 psli->sli3_ring[LPFC_FCP_RING].flag &= ~LPFC_STOP_IOCB_EVENT; 1419 1420 /* Check for error */ 1421 if ((mb->mbxStatus) && (mb->mbxStatus != 0x1601)) { 1422 /* CLEAR_LA mbox error <mbxStatus> state <hba_state> */ 1423 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 1424 "0320 CLEAR_LA mbxStatus error x%x hba " 1425 "state x%x\n", 1426 mb->mbxStatus, vport->port_state); 1427 phba->link_state = LPFC_HBA_ERROR; 1428 goto out; 1429 } 1430 1431 if (vport->port_type == LPFC_PHYSICAL_PORT) 1432 phba->link_state = LPFC_HBA_READY; 1433 1434 spin_lock_irq(&phba->hbalock); 1435 psli->sli_flag |= LPFC_PROCESS_LA; 1436 control = readl(phba->HCregaddr); 1437 control |= HC_LAINT_ENA; 1438 writel(control, phba->HCregaddr); 1439 readl(phba->HCregaddr); /* flush */ 1440 spin_unlock_irq(&phba->hbalock); 1441 mempool_free(pmb, phba->mbox_mem_pool); 1442 return; 1443 1444 out: 1445 /* Device Discovery completes */ 1446 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, 1447 "0225 Device Discovery completes\n"); 1448 mempool_free(pmb, phba->mbox_mem_pool); 1449 1450 spin_lock_irq(shost->host_lock); 1451 vport->fc_flag &= ~FC_ABORT_DISCOVERY; 1452 spin_unlock_irq(shost->host_lock); 1453 1454 lpfc_can_disctmo(vport); 1455 1456 /* turn on Link Attention interrupts */ 1457 1458 spin_lock_irq(&phba->hbalock); 1459 psli->sli_flag |= LPFC_PROCESS_LA; 1460 control = readl(phba->HCregaddr); 1461 control |= HC_LAINT_ENA; 1462 writel(control, phba->HCregaddr); 1463 readl(phba->HCregaddr); /* flush */ 1464 spin_unlock_irq(&phba->hbalock); 1465 1466 return; 1467 } 1468 1469 void 1470 lpfc_mbx_cmpl_local_config_link(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 1471 { 1472 struct lpfc_vport *vport = pmb->vport; 1473 LPFC_MBOXQ_t *sparam_mb; 1474 u16 status = pmb->u.mb.mbxStatus; 1475 int rc; 1476 1477 mempool_free(pmb, phba->mbox_mem_pool); 1478 1479 if (status) 1480 goto out; 1481 1482 /* don't perform discovery for SLI4 loopback diagnostic test */ 1483 if ((phba->sli_rev == LPFC_SLI_REV4) && 1484 !(phba->hba_flag & HBA_FCOE_MODE) && 1485 (phba->link_flag & LS_LOOPBACK_MODE)) 1486 return; 1487 1488 if (phba->fc_topology == LPFC_TOPOLOGY_LOOP && 1489 vport->fc_flag & FC_PUBLIC_LOOP && 1490 !(vport->fc_flag & FC_LBIT)) { 1491 /* Need to wait for FAN - use discovery timer 1492 * for timeout. port_state is identically 1493 * LPFC_LOCAL_CFG_LINK while waiting for FAN 1494 */ 1495 lpfc_set_disctmo(vport); 1496 return; 1497 } 1498 1499 /* Start discovery by sending a FLOGI. port_state is identically 1500 * LPFC_FLOGI while waiting for FLOGI cmpl. 1501 */ 1502 if (vport->port_state != LPFC_FLOGI) { 1503 /* Issue MBX_READ_SPARAM to update CSPs before FLOGI if 1504 * bb-credit recovery is in place. 1505 */ 1506 if (phba->bbcredit_support && phba->cfg_enable_bbcr && 1507 !(phba->link_flag & LS_LOOPBACK_MODE)) { 1508 sparam_mb = mempool_alloc(phba->mbox_mem_pool, 1509 GFP_KERNEL); 1510 if (!sparam_mb) 1511 goto sparam_out; 1512 1513 rc = lpfc_read_sparam(phba, sparam_mb, 0); 1514 if (rc) { 1515 mempool_free(sparam_mb, phba->mbox_mem_pool); 1516 goto sparam_out; 1517 } 1518 sparam_mb->vport = vport; 1519 sparam_mb->mbox_cmpl = lpfc_mbx_cmpl_read_sparam; 1520 rc = lpfc_sli_issue_mbox(phba, sparam_mb, MBX_NOWAIT); 1521 if (rc == MBX_NOT_FINISHED) { 1522 lpfc_mbox_rsrc_cleanup(phba, sparam_mb, 1523 MBOX_THD_UNLOCKED); 1524 goto sparam_out; 1525 } 1526 1527 phba->hba_flag |= HBA_DEFER_FLOGI; 1528 } else { 1529 lpfc_initial_flogi(vport); 1530 } 1531 } else { 1532 if (vport->fc_flag & FC_PT2PT) 1533 lpfc_disc_start(vport); 1534 } 1535 return; 1536 1537 out: 1538 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 1539 "0306 CONFIG_LINK mbxStatus error x%x HBA state x%x\n", 1540 status, vport->port_state); 1541 1542 sparam_out: 1543 lpfc_linkdown(phba); 1544 1545 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 1546 "0200 CONFIG_LINK bad hba state x%x\n", 1547 vport->port_state); 1548 1549 lpfc_issue_clear_la(phba, vport); 1550 return; 1551 } 1552 1553 /** 1554 * lpfc_sli4_clear_fcf_rr_bmask 1555 * @phba: pointer to the struct lpfc_hba for this port. 1556 * This fucnction resets the round robin bit mask and clears the 1557 * fcf priority list. The list deletions are done while holding the 1558 * hbalock. The ON_LIST flag and the FLOGI_FAILED flags are cleared 1559 * from the lpfc_fcf_pri record. 1560 **/ 1561 void 1562 lpfc_sli4_clear_fcf_rr_bmask(struct lpfc_hba *phba) 1563 { 1564 struct lpfc_fcf_pri *fcf_pri; 1565 struct lpfc_fcf_pri *next_fcf_pri; 1566 memset(phba->fcf.fcf_rr_bmask, 0, sizeof(*phba->fcf.fcf_rr_bmask)); 1567 spin_lock_irq(&phba->hbalock); 1568 list_for_each_entry_safe(fcf_pri, next_fcf_pri, 1569 &phba->fcf.fcf_pri_list, list) { 1570 list_del_init(&fcf_pri->list); 1571 fcf_pri->fcf_rec.flag = 0; 1572 } 1573 spin_unlock_irq(&phba->hbalock); 1574 } 1575 static void 1576 lpfc_mbx_cmpl_reg_fcfi(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq) 1577 { 1578 struct lpfc_vport *vport = mboxq->vport; 1579 1580 if (mboxq->u.mb.mbxStatus) { 1581 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 1582 "2017 REG_FCFI mbxStatus error x%x " 1583 "HBA state x%x\n", mboxq->u.mb.mbxStatus, 1584 vport->port_state); 1585 goto fail_out; 1586 } 1587 1588 /* Start FCoE discovery by sending a FLOGI. */ 1589 phba->fcf.fcfi = bf_get(lpfc_reg_fcfi_fcfi, &mboxq->u.mqe.un.reg_fcfi); 1590 /* Set the FCFI registered flag */ 1591 spin_lock_irq(&phba->hbalock); 1592 phba->fcf.fcf_flag |= FCF_REGISTERED; 1593 spin_unlock_irq(&phba->hbalock); 1594 1595 /* If there is a pending FCoE event, restart FCF table scan. */ 1596 if ((!(phba->hba_flag & FCF_RR_INPROG)) && 1597 lpfc_check_pending_fcoe_event(phba, LPFC_UNREG_FCF)) 1598 goto fail_out; 1599 1600 /* Mark successful completion of FCF table scan */ 1601 spin_lock_irq(&phba->hbalock); 1602 phba->fcf.fcf_flag |= (FCF_SCAN_DONE | FCF_IN_USE); 1603 phba->hba_flag &= ~FCF_TS_INPROG; 1604 if (vport->port_state != LPFC_FLOGI) { 1605 phba->hba_flag |= FCF_RR_INPROG; 1606 spin_unlock_irq(&phba->hbalock); 1607 lpfc_issue_init_vfi(vport); 1608 goto out; 1609 } 1610 spin_unlock_irq(&phba->hbalock); 1611 goto out; 1612 1613 fail_out: 1614 spin_lock_irq(&phba->hbalock); 1615 phba->hba_flag &= ~FCF_RR_INPROG; 1616 spin_unlock_irq(&phba->hbalock); 1617 out: 1618 mempool_free(mboxq, phba->mbox_mem_pool); 1619 } 1620 1621 /** 1622 * lpfc_fab_name_match - Check if the fcf fabric name match. 1623 * @fab_name: pointer to fabric name. 1624 * @new_fcf_record: pointer to fcf record. 1625 * 1626 * This routine compare the fcf record's fabric name with provided 1627 * fabric name. If the fabric name are identical this function 1628 * returns 1 else return 0. 1629 **/ 1630 static uint32_t 1631 lpfc_fab_name_match(uint8_t *fab_name, struct fcf_record *new_fcf_record) 1632 { 1633 if (fab_name[0] != bf_get(lpfc_fcf_record_fab_name_0, new_fcf_record)) 1634 return 0; 1635 if (fab_name[1] != bf_get(lpfc_fcf_record_fab_name_1, new_fcf_record)) 1636 return 0; 1637 if (fab_name[2] != bf_get(lpfc_fcf_record_fab_name_2, new_fcf_record)) 1638 return 0; 1639 if (fab_name[3] != bf_get(lpfc_fcf_record_fab_name_3, new_fcf_record)) 1640 return 0; 1641 if (fab_name[4] != bf_get(lpfc_fcf_record_fab_name_4, new_fcf_record)) 1642 return 0; 1643 if (fab_name[5] != bf_get(lpfc_fcf_record_fab_name_5, new_fcf_record)) 1644 return 0; 1645 if (fab_name[6] != bf_get(lpfc_fcf_record_fab_name_6, new_fcf_record)) 1646 return 0; 1647 if (fab_name[7] != bf_get(lpfc_fcf_record_fab_name_7, new_fcf_record)) 1648 return 0; 1649 return 1; 1650 } 1651 1652 /** 1653 * lpfc_sw_name_match - Check if the fcf switch name match. 1654 * @sw_name: pointer to switch name. 1655 * @new_fcf_record: pointer to fcf record. 1656 * 1657 * This routine compare the fcf record's switch name with provided 1658 * switch name. If the switch name are identical this function 1659 * returns 1 else return 0. 1660 **/ 1661 static uint32_t 1662 lpfc_sw_name_match(uint8_t *sw_name, struct fcf_record *new_fcf_record) 1663 { 1664 if (sw_name[0] != bf_get(lpfc_fcf_record_switch_name_0, new_fcf_record)) 1665 return 0; 1666 if (sw_name[1] != bf_get(lpfc_fcf_record_switch_name_1, new_fcf_record)) 1667 return 0; 1668 if (sw_name[2] != bf_get(lpfc_fcf_record_switch_name_2, new_fcf_record)) 1669 return 0; 1670 if (sw_name[3] != bf_get(lpfc_fcf_record_switch_name_3, new_fcf_record)) 1671 return 0; 1672 if (sw_name[4] != bf_get(lpfc_fcf_record_switch_name_4, new_fcf_record)) 1673 return 0; 1674 if (sw_name[5] != bf_get(lpfc_fcf_record_switch_name_5, new_fcf_record)) 1675 return 0; 1676 if (sw_name[6] != bf_get(lpfc_fcf_record_switch_name_6, new_fcf_record)) 1677 return 0; 1678 if (sw_name[7] != bf_get(lpfc_fcf_record_switch_name_7, new_fcf_record)) 1679 return 0; 1680 return 1; 1681 } 1682 1683 /** 1684 * lpfc_mac_addr_match - Check if the fcf mac address match. 1685 * @mac_addr: pointer to mac address. 1686 * @new_fcf_record: pointer to fcf record. 1687 * 1688 * This routine compare the fcf record's mac address with HBA's 1689 * FCF mac address. If the mac addresses are identical this function 1690 * returns 1 else return 0. 1691 **/ 1692 static uint32_t 1693 lpfc_mac_addr_match(uint8_t *mac_addr, struct fcf_record *new_fcf_record) 1694 { 1695 if (mac_addr[0] != bf_get(lpfc_fcf_record_mac_0, new_fcf_record)) 1696 return 0; 1697 if (mac_addr[1] != bf_get(lpfc_fcf_record_mac_1, new_fcf_record)) 1698 return 0; 1699 if (mac_addr[2] != bf_get(lpfc_fcf_record_mac_2, new_fcf_record)) 1700 return 0; 1701 if (mac_addr[3] != bf_get(lpfc_fcf_record_mac_3, new_fcf_record)) 1702 return 0; 1703 if (mac_addr[4] != bf_get(lpfc_fcf_record_mac_4, new_fcf_record)) 1704 return 0; 1705 if (mac_addr[5] != bf_get(lpfc_fcf_record_mac_5, new_fcf_record)) 1706 return 0; 1707 return 1; 1708 } 1709 1710 static bool 1711 lpfc_vlan_id_match(uint16_t curr_vlan_id, uint16_t new_vlan_id) 1712 { 1713 return (curr_vlan_id == new_vlan_id); 1714 } 1715 1716 /** 1717 * __lpfc_update_fcf_record_pri - update the lpfc_fcf_pri record. 1718 * @phba: pointer to lpfc hba data structure. 1719 * @fcf_index: Index for the lpfc_fcf_record. 1720 * @new_fcf_record: pointer to hba fcf record. 1721 * 1722 * This routine updates the driver FCF priority record from the new HBA FCF 1723 * record. The hbalock is asserted held in the code path calling this 1724 * routine. 1725 **/ 1726 static void 1727 __lpfc_update_fcf_record_pri(struct lpfc_hba *phba, uint16_t fcf_index, 1728 struct fcf_record *new_fcf_record 1729 ) 1730 { 1731 struct lpfc_fcf_pri *fcf_pri; 1732 1733 fcf_pri = &phba->fcf.fcf_pri[fcf_index]; 1734 fcf_pri->fcf_rec.fcf_index = fcf_index; 1735 /* FCF record priority */ 1736 fcf_pri->fcf_rec.priority = new_fcf_record->fip_priority; 1737 1738 } 1739 1740 /** 1741 * lpfc_copy_fcf_record - Copy fcf information to lpfc_hba. 1742 * @fcf_rec: pointer to driver fcf record. 1743 * @new_fcf_record: pointer to fcf record. 1744 * 1745 * This routine copies the FCF information from the FCF 1746 * record to lpfc_hba data structure. 1747 **/ 1748 static void 1749 lpfc_copy_fcf_record(struct lpfc_fcf_rec *fcf_rec, 1750 struct fcf_record *new_fcf_record) 1751 { 1752 /* Fabric name */ 1753 fcf_rec->fabric_name[0] = 1754 bf_get(lpfc_fcf_record_fab_name_0, new_fcf_record); 1755 fcf_rec->fabric_name[1] = 1756 bf_get(lpfc_fcf_record_fab_name_1, new_fcf_record); 1757 fcf_rec->fabric_name[2] = 1758 bf_get(lpfc_fcf_record_fab_name_2, new_fcf_record); 1759 fcf_rec->fabric_name[3] = 1760 bf_get(lpfc_fcf_record_fab_name_3, new_fcf_record); 1761 fcf_rec->fabric_name[4] = 1762 bf_get(lpfc_fcf_record_fab_name_4, new_fcf_record); 1763 fcf_rec->fabric_name[5] = 1764 bf_get(lpfc_fcf_record_fab_name_5, new_fcf_record); 1765 fcf_rec->fabric_name[6] = 1766 bf_get(lpfc_fcf_record_fab_name_6, new_fcf_record); 1767 fcf_rec->fabric_name[7] = 1768 bf_get(lpfc_fcf_record_fab_name_7, new_fcf_record); 1769 /* Mac address */ 1770 fcf_rec->mac_addr[0] = bf_get(lpfc_fcf_record_mac_0, new_fcf_record); 1771 fcf_rec->mac_addr[1] = bf_get(lpfc_fcf_record_mac_1, new_fcf_record); 1772 fcf_rec->mac_addr[2] = bf_get(lpfc_fcf_record_mac_2, new_fcf_record); 1773 fcf_rec->mac_addr[3] = bf_get(lpfc_fcf_record_mac_3, new_fcf_record); 1774 fcf_rec->mac_addr[4] = bf_get(lpfc_fcf_record_mac_4, new_fcf_record); 1775 fcf_rec->mac_addr[5] = bf_get(lpfc_fcf_record_mac_5, new_fcf_record); 1776 /* FCF record index */ 1777 fcf_rec->fcf_indx = bf_get(lpfc_fcf_record_fcf_index, new_fcf_record); 1778 /* FCF record priority */ 1779 fcf_rec->priority = new_fcf_record->fip_priority; 1780 /* Switch name */ 1781 fcf_rec->switch_name[0] = 1782 bf_get(lpfc_fcf_record_switch_name_0, new_fcf_record); 1783 fcf_rec->switch_name[1] = 1784 bf_get(lpfc_fcf_record_switch_name_1, new_fcf_record); 1785 fcf_rec->switch_name[2] = 1786 bf_get(lpfc_fcf_record_switch_name_2, new_fcf_record); 1787 fcf_rec->switch_name[3] = 1788 bf_get(lpfc_fcf_record_switch_name_3, new_fcf_record); 1789 fcf_rec->switch_name[4] = 1790 bf_get(lpfc_fcf_record_switch_name_4, new_fcf_record); 1791 fcf_rec->switch_name[5] = 1792 bf_get(lpfc_fcf_record_switch_name_5, new_fcf_record); 1793 fcf_rec->switch_name[6] = 1794 bf_get(lpfc_fcf_record_switch_name_6, new_fcf_record); 1795 fcf_rec->switch_name[7] = 1796 bf_get(lpfc_fcf_record_switch_name_7, new_fcf_record); 1797 } 1798 1799 /** 1800 * __lpfc_update_fcf_record - Update driver fcf record 1801 * @phba: pointer to lpfc hba data structure. 1802 * @fcf_rec: pointer to driver fcf record. 1803 * @new_fcf_record: pointer to hba fcf record. 1804 * @addr_mode: address mode to be set to the driver fcf record. 1805 * @vlan_id: vlan tag to be set to the driver fcf record. 1806 * @flag: flag bits to be set to the driver fcf record. 1807 * 1808 * This routine updates the driver FCF record from the new HBA FCF record 1809 * together with the address mode, vlan_id, and other informations. This 1810 * routine is called with the hbalock held. 1811 **/ 1812 static void 1813 __lpfc_update_fcf_record(struct lpfc_hba *phba, struct lpfc_fcf_rec *fcf_rec, 1814 struct fcf_record *new_fcf_record, uint32_t addr_mode, 1815 uint16_t vlan_id, uint32_t flag) 1816 { 1817 lockdep_assert_held(&phba->hbalock); 1818 1819 /* Copy the fields from the HBA's FCF record */ 1820 lpfc_copy_fcf_record(fcf_rec, new_fcf_record); 1821 /* Update other fields of driver FCF record */ 1822 fcf_rec->addr_mode = addr_mode; 1823 fcf_rec->vlan_id = vlan_id; 1824 fcf_rec->flag |= (flag | RECORD_VALID); 1825 __lpfc_update_fcf_record_pri(phba, 1826 bf_get(lpfc_fcf_record_fcf_index, new_fcf_record), 1827 new_fcf_record); 1828 } 1829 1830 /** 1831 * lpfc_register_fcf - Register the FCF with hba. 1832 * @phba: pointer to lpfc hba data structure. 1833 * 1834 * This routine issues a register fcfi mailbox command to register 1835 * the fcf with HBA. 1836 **/ 1837 static void 1838 lpfc_register_fcf(struct lpfc_hba *phba) 1839 { 1840 LPFC_MBOXQ_t *fcf_mbxq; 1841 int rc; 1842 1843 spin_lock_irq(&phba->hbalock); 1844 /* If the FCF is not available do nothing. */ 1845 if (!(phba->fcf.fcf_flag & FCF_AVAILABLE)) { 1846 phba->hba_flag &= ~(FCF_TS_INPROG | FCF_RR_INPROG); 1847 spin_unlock_irq(&phba->hbalock); 1848 return; 1849 } 1850 1851 /* The FCF is already registered, start discovery */ 1852 if (phba->fcf.fcf_flag & FCF_REGISTERED) { 1853 phba->fcf.fcf_flag |= (FCF_SCAN_DONE | FCF_IN_USE); 1854 phba->hba_flag &= ~FCF_TS_INPROG; 1855 if (phba->pport->port_state != LPFC_FLOGI && 1856 phba->pport->fc_flag & FC_FABRIC) { 1857 phba->hba_flag |= FCF_RR_INPROG; 1858 spin_unlock_irq(&phba->hbalock); 1859 lpfc_initial_flogi(phba->pport); 1860 return; 1861 } 1862 spin_unlock_irq(&phba->hbalock); 1863 return; 1864 } 1865 spin_unlock_irq(&phba->hbalock); 1866 1867 fcf_mbxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 1868 if (!fcf_mbxq) { 1869 spin_lock_irq(&phba->hbalock); 1870 phba->hba_flag &= ~(FCF_TS_INPROG | FCF_RR_INPROG); 1871 spin_unlock_irq(&phba->hbalock); 1872 return; 1873 } 1874 1875 lpfc_reg_fcfi(phba, fcf_mbxq); 1876 fcf_mbxq->vport = phba->pport; 1877 fcf_mbxq->mbox_cmpl = lpfc_mbx_cmpl_reg_fcfi; 1878 rc = lpfc_sli_issue_mbox(phba, fcf_mbxq, MBX_NOWAIT); 1879 if (rc == MBX_NOT_FINISHED) { 1880 spin_lock_irq(&phba->hbalock); 1881 phba->hba_flag &= ~(FCF_TS_INPROG | FCF_RR_INPROG); 1882 spin_unlock_irq(&phba->hbalock); 1883 mempool_free(fcf_mbxq, phba->mbox_mem_pool); 1884 } 1885 1886 return; 1887 } 1888 1889 /** 1890 * lpfc_match_fcf_conn_list - Check if the FCF record can be used for discovery. 1891 * @phba: pointer to lpfc hba data structure. 1892 * @new_fcf_record: pointer to fcf record. 1893 * @boot_flag: Indicates if this record used by boot bios. 1894 * @addr_mode: The address mode to be used by this FCF 1895 * @vlan_id: The vlan id to be used as vlan tagging by this FCF. 1896 * 1897 * This routine compare the fcf record with connect list obtained from the 1898 * config region to decide if this FCF can be used for SAN discovery. It returns 1899 * 1 if this record can be used for SAN discovery else return zero. If this FCF 1900 * record can be used for SAN discovery, the boot_flag will indicate if this FCF 1901 * is used by boot bios and addr_mode will indicate the addressing mode to be 1902 * used for this FCF when the function returns. 1903 * If the FCF record need to be used with a particular vlan id, the vlan is 1904 * set in the vlan_id on return of the function. If not VLAN tagging need to 1905 * be used with the FCF vlan_id will be set to LPFC_FCOE_NULL_VID; 1906 **/ 1907 static int 1908 lpfc_match_fcf_conn_list(struct lpfc_hba *phba, 1909 struct fcf_record *new_fcf_record, 1910 uint32_t *boot_flag, uint32_t *addr_mode, 1911 uint16_t *vlan_id) 1912 { 1913 struct lpfc_fcf_conn_entry *conn_entry; 1914 int i, j, fcf_vlan_id = 0; 1915 1916 /* Find the lowest VLAN id in the FCF record */ 1917 for (i = 0; i < 512; i++) { 1918 if (new_fcf_record->vlan_bitmap[i]) { 1919 fcf_vlan_id = i * 8; 1920 j = 0; 1921 while (!((new_fcf_record->vlan_bitmap[i] >> j) & 1)) { 1922 j++; 1923 fcf_vlan_id++; 1924 } 1925 break; 1926 } 1927 } 1928 1929 /* FCF not valid/available or solicitation in progress */ 1930 if (!bf_get(lpfc_fcf_record_fcf_avail, new_fcf_record) || 1931 !bf_get(lpfc_fcf_record_fcf_valid, new_fcf_record) || 1932 bf_get(lpfc_fcf_record_fcf_sol, new_fcf_record)) 1933 return 0; 1934 1935 if (!(phba->hba_flag & HBA_FIP_SUPPORT)) { 1936 *boot_flag = 0; 1937 *addr_mode = bf_get(lpfc_fcf_record_mac_addr_prov, 1938 new_fcf_record); 1939 if (phba->valid_vlan) 1940 *vlan_id = phba->vlan_id; 1941 else 1942 *vlan_id = LPFC_FCOE_NULL_VID; 1943 return 1; 1944 } 1945 1946 /* 1947 * If there are no FCF connection table entry, driver connect to all 1948 * FCFs. 1949 */ 1950 if (list_empty(&phba->fcf_conn_rec_list)) { 1951 *boot_flag = 0; 1952 *addr_mode = bf_get(lpfc_fcf_record_mac_addr_prov, 1953 new_fcf_record); 1954 1955 /* 1956 * When there are no FCF connect entries, use driver's default 1957 * addressing mode - FPMA. 1958 */ 1959 if (*addr_mode & LPFC_FCF_FPMA) 1960 *addr_mode = LPFC_FCF_FPMA; 1961 1962 /* If FCF record report a vlan id use that vlan id */ 1963 if (fcf_vlan_id) 1964 *vlan_id = fcf_vlan_id; 1965 else 1966 *vlan_id = LPFC_FCOE_NULL_VID; 1967 return 1; 1968 } 1969 1970 list_for_each_entry(conn_entry, 1971 &phba->fcf_conn_rec_list, list) { 1972 if (!(conn_entry->conn_rec.flags & FCFCNCT_VALID)) 1973 continue; 1974 1975 if ((conn_entry->conn_rec.flags & FCFCNCT_FBNM_VALID) && 1976 !lpfc_fab_name_match(conn_entry->conn_rec.fabric_name, 1977 new_fcf_record)) 1978 continue; 1979 if ((conn_entry->conn_rec.flags & FCFCNCT_SWNM_VALID) && 1980 !lpfc_sw_name_match(conn_entry->conn_rec.switch_name, 1981 new_fcf_record)) 1982 continue; 1983 if (conn_entry->conn_rec.flags & FCFCNCT_VLAN_VALID) { 1984 /* 1985 * If the vlan bit map does not have the bit set for the 1986 * vlan id to be used, then it is not a match. 1987 */ 1988 if (!(new_fcf_record->vlan_bitmap 1989 [conn_entry->conn_rec.vlan_tag / 8] & 1990 (1 << (conn_entry->conn_rec.vlan_tag % 8)))) 1991 continue; 1992 } 1993 1994 /* 1995 * If connection record does not support any addressing mode, 1996 * skip the FCF record. 1997 */ 1998 if (!(bf_get(lpfc_fcf_record_mac_addr_prov, new_fcf_record) 1999 & (LPFC_FCF_FPMA | LPFC_FCF_SPMA))) 2000 continue; 2001 2002 /* 2003 * Check if the connection record specifies a required 2004 * addressing mode. 2005 */ 2006 if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) && 2007 !(conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED)) { 2008 2009 /* 2010 * If SPMA required but FCF not support this continue. 2011 */ 2012 if ((conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) && 2013 !(bf_get(lpfc_fcf_record_mac_addr_prov, 2014 new_fcf_record) & LPFC_FCF_SPMA)) 2015 continue; 2016 2017 /* 2018 * If FPMA required but FCF not support this continue. 2019 */ 2020 if (!(conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) && 2021 !(bf_get(lpfc_fcf_record_mac_addr_prov, 2022 new_fcf_record) & LPFC_FCF_FPMA)) 2023 continue; 2024 } 2025 2026 /* 2027 * This fcf record matches filtering criteria. 2028 */ 2029 if (conn_entry->conn_rec.flags & FCFCNCT_BOOT) 2030 *boot_flag = 1; 2031 else 2032 *boot_flag = 0; 2033 2034 /* 2035 * If user did not specify any addressing mode, or if the 2036 * preferred addressing mode specified by user is not supported 2037 * by FCF, allow fabric to pick the addressing mode. 2038 */ 2039 *addr_mode = bf_get(lpfc_fcf_record_mac_addr_prov, 2040 new_fcf_record); 2041 /* 2042 * If the user specified a required address mode, assign that 2043 * address mode 2044 */ 2045 if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) && 2046 (!(conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED))) 2047 *addr_mode = (conn_entry->conn_rec.flags & 2048 FCFCNCT_AM_SPMA) ? 2049 LPFC_FCF_SPMA : LPFC_FCF_FPMA; 2050 /* 2051 * If the user specified a preferred address mode, use the 2052 * addr mode only if FCF support the addr_mode. 2053 */ 2054 else if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) && 2055 (conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED) && 2056 (conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) && 2057 (*addr_mode & LPFC_FCF_SPMA)) 2058 *addr_mode = LPFC_FCF_SPMA; 2059 else if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) && 2060 (conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED) && 2061 !(conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) && 2062 (*addr_mode & LPFC_FCF_FPMA)) 2063 *addr_mode = LPFC_FCF_FPMA; 2064 2065 /* If matching connect list has a vlan id, use it */ 2066 if (conn_entry->conn_rec.flags & FCFCNCT_VLAN_VALID) 2067 *vlan_id = conn_entry->conn_rec.vlan_tag; 2068 /* 2069 * If no vlan id is specified in connect list, use the vlan id 2070 * in the FCF record 2071 */ 2072 else if (fcf_vlan_id) 2073 *vlan_id = fcf_vlan_id; 2074 else 2075 *vlan_id = LPFC_FCOE_NULL_VID; 2076 2077 return 1; 2078 } 2079 2080 return 0; 2081 } 2082 2083 /** 2084 * lpfc_check_pending_fcoe_event - Check if there is pending fcoe event. 2085 * @phba: pointer to lpfc hba data structure. 2086 * @unreg_fcf: Unregister FCF if FCF table need to be re-scaned. 2087 * 2088 * This function check if there is any fcoe event pending while driver 2089 * scan FCF entries. If there is any pending event, it will restart the 2090 * FCF saning and return 1 else return 0. 2091 */ 2092 int 2093 lpfc_check_pending_fcoe_event(struct lpfc_hba *phba, uint8_t unreg_fcf) 2094 { 2095 /* 2096 * If the Link is up and no FCoE events while in the 2097 * FCF discovery, no need to restart FCF discovery. 2098 */ 2099 if ((phba->link_state >= LPFC_LINK_UP) && 2100 (phba->fcoe_eventtag == phba->fcoe_eventtag_at_fcf_scan)) 2101 return 0; 2102 2103 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2104 "2768 Pending link or FCF event during current " 2105 "handling of the previous event: link_state:x%x, " 2106 "evt_tag_at_scan:x%x, evt_tag_current:x%x\n", 2107 phba->link_state, phba->fcoe_eventtag_at_fcf_scan, 2108 phba->fcoe_eventtag); 2109 2110 spin_lock_irq(&phba->hbalock); 2111 phba->fcf.fcf_flag &= ~FCF_AVAILABLE; 2112 spin_unlock_irq(&phba->hbalock); 2113 2114 if (phba->link_state >= LPFC_LINK_UP) { 2115 lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY, 2116 "2780 Restart FCF table scan due to " 2117 "pending FCF event:evt_tag_at_scan:x%x, " 2118 "evt_tag_current:x%x\n", 2119 phba->fcoe_eventtag_at_fcf_scan, 2120 phba->fcoe_eventtag); 2121 lpfc_sli4_fcf_scan_read_fcf_rec(phba, LPFC_FCOE_FCF_GET_FIRST); 2122 } else { 2123 /* 2124 * Do not continue FCF discovery and clear FCF_TS_INPROG 2125 * flag 2126 */ 2127 lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY, 2128 "2833 Stop FCF discovery process due to link " 2129 "state change (x%x)\n", phba->link_state); 2130 spin_lock_irq(&phba->hbalock); 2131 phba->hba_flag &= ~(FCF_TS_INPROG | FCF_RR_INPROG); 2132 phba->fcf.fcf_flag &= ~(FCF_REDISC_FOV | FCF_DISCOVERY); 2133 spin_unlock_irq(&phba->hbalock); 2134 } 2135 2136 /* Unregister the currently registered FCF if required */ 2137 if (unreg_fcf) { 2138 spin_lock_irq(&phba->hbalock); 2139 phba->fcf.fcf_flag &= ~FCF_REGISTERED; 2140 spin_unlock_irq(&phba->hbalock); 2141 lpfc_sli4_unregister_fcf(phba); 2142 } 2143 return 1; 2144 } 2145 2146 /** 2147 * lpfc_sli4_new_fcf_random_select - Randomly select an eligible new fcf record 2148 * @phba: pointer to lpfc hba data structure. 2149 * @fcf_cnt: number of eligible fcf record seen so far. 2150 * 2151 * This function makes an running random selection decision on FCF record to 2152 * use through a sequence of @fcf_cnt eligible FCF records with equal 2153 * probability. To perform integer manunipulation of random numbers with 2154 * size unit32_t, the lower 16 bits of the 32-bit random number returned 2155 * from prandom_u32() are taken as the random random number generated. 2156 * 2157 * Returns true when outcome is for the newly read FCF record should be 2158 * chosen; otherwise, return false when outcome is for keeping the previously 2159 * chosen FCF record. 2160 **/ 2161 static bool 2162 lpfc_sli4_new_fcf_random_select(struct lpfc_hba *phba, uint32_t fcf_cnt) 2163 { 2164 uint32_t rand_num; 2165 2166 /* Get 16-bit uniform random number */ 2167 rand_num = 0xFFFF & prandom_u32(); 2168 2169 /* Decision with probability 1/fcf_cnt */ 2170 if ((fcf_cnt * rand_num) < 0xFFFF) 2171 return true; 2172 else 2173 return false; 2174 } 2175 2176 /** 2177 * lpfc_sli4_fcf_rec_mbox_parse - Parse read_fcf mbox command. 2178 * @phba: pointer to lpfc hba data structure. 2179 * @mboxq: pointer to mailbox object. 2180 * @next_fcf_index: pointer to holder of next fcf index. 2181 * 2182 * This routine parses the non-embedded fcf mailbox command by performing the 2183 * necessarily error checking, non-embedded read FCF record mailbox command 2184 * SGE parsing, and endianness swapping. 2185 * 2186 * Returns the pointer to the new FCF record in the non-embedded mailbox 2187 * command DMA memory if successfully, other NULL. 2188 */ 2189 static struct fcf_record * 2190 lpfc_sli4_fcf_rec_mbox_parse(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq, 2191 uint16_t *next_fcf_index) 2192 { 2193 void *virt_addr; 2194 struct lpfc_mbx_sge sge; 2195 struct lpfc_mbx_read_fcf_tbl *read_fcf; 2196 uint32_t shdr_status, shdr_add_status, if_type; 2197 union lpfc_sli4_cfg_shdr *shdr; 2198 struct fcf_record *new_fcf_record; 2199 2200 /* Get the first SGE entry from the non-embedded DMA memory. This 2201 * routine only uses a single SGE. 2202 */ 2203 lpfc_sli4_mbx_sge_get(mboxq, 0, &sge); 2204 if (unlikely(!mboxq->sge_array)) { 2205 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 2206 "2524 Failed to get the non-embedded SGE " 2207 "virtual address\n"); 2208 return NULL; 2209 } 2210 virt_addr = mboxq->sge_array->addr[0]; 2211 2212 shdr = (union lpfc_sli4_cfg_shdr *)virt_addr; 2213 lpfc_sli_pcimem_bcopy(shdr, shdr, 2214 sizeof(union lpfc_sli4_cfg_shdr)); 2215 shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response); 2216 if_type = bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf); 2217 shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response); 2218 if (shdr_status || shdr_add_status) { 2219 if (shdr_status == STATUS_FCF_TABLE_EMPTY || 2220 if_type == LPFC_SLI_INTF_IF_TYPE_2) 2221 lpfc_printf_log(phba, KERN_ERR, 2222 LOG_TRACE_EVENT, 2223 "2726 READ_FCF_RECORD Indicates empty " 2224 "FCF table.\n"); 2225 else 2226 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 2227 "2521 READ_FCF_RECORD mailbox failed " 2228 "with status x%x add_status x%x, " 2229 "mbx\n", shdr_status, shdr_add_status); 2230 return NULL; 2231 } 2232 2233 /* Interpreting the returned information of the FCF record */ 2234 read_fcf = (struct lpfc_mbx_read_fcf_tbl *)virt_addr; 2235 lpfc_sli_pcimem_bcopy(read_fcf, read_fcf, 2236 sizeof(struct lpfc_mbx_read_fcf_tbl)); 2237 *next_fcf_index = bf_get(lpfc_mbx_read_fcf_tbl_nxt_vindx, read_fcf); 2238 new_fcf_record = (struct fcf_record *)(virt_addr + 2239 sizeof(struct lpfc_mbx_read_fcf_tbl)); 2240 lpfc_sli_pcimem_bcopy(new_fcf_record, new_fcf_record, 2241 offsetof(struct fcf_record, vlan_bitmap)); 2242 new_fcf_record->word137 = le32_to_cpu(new_fcf_record->word137); 2243 new_fcf_record->word138 = le32_to_cpu(new_fcf_record->word138); 2244 2245 return new_fcf_record; 2246 } 2247 2248 /** 2249 * lpfc_sli4_log_fcf_record_info - Log the information of a fcf record 2250 * @phba: pointer to lpfc hba data structure. 2251 * @fcf_record: pointer to the fcf record. 2252 * @vlan_id: the lowest vlan identifier associated to this fcf record. 2253 * @next_fcf_index: the index to the next fcf record in hba's fcf table. 2254 * 2255 * This routine logs the detailed FCF record if the LOG_FIP loggin is 2256 * enabled. 2257 **/ 2258 static void 2259 lpfc_sli4_log_fcf_record_info(struct lpfc_hba *phba, 2260 struct fcf_record *fcf_record, 2261 uint16_t vlan_id, 2262 uint16_t next_fcf_index) 2263 { 2264 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2265 "2764 READ_FCF_RECORD:\n" 2266 "\tFCF_Index : x%x\n" 2267 "\tFCF_Avail : x%x\n" 2268 "\tFCF_Valid : x%x\n" 2269 "\tFCF_SOL : x%x\n" 2270 "\tFIP_Priority : x%x\n" 2271 "\tMAC_Provider : x%x\n" 2272 "\tLowest VLANID : x%x\n" 2273 "\tFCF_MAC Addr : x%x:%x:%x:%x:%x:%x\n" 2274 "\tFabric_Name : x%x:%x:%x:%x:%x:%x:%x:%x\n" 2275 "\tSwitch_Name : x%x:%x:%x:%x:%x:%x:%x:%x\n" 2276 "\tNext_FCF_Index: x%x\n", 2277 bf_get(lpfc_fcf_record_fcf_index, fcf_record), 2278 bf_get(lpfc_fcf_record_fcf_avail, fcf_record), 2279 bf_get(lpfc_fcf_record_fcf_valid, fcf_record), 2280 bf_get(lpfc_fcf_record_fcf_sol, fcf_record), 2281 fcf_record->fip_priority, 2282 bf_get(lpfc_fcf_record_mac_addr_prov, fcf_record), 2283 vlan_id, 2284 bf_get(lpfc_fcf_record_mac_0, fcf_record), 2285 bf_get(lpfc_fcf_record_mac_1, fcf_record), 2286 bf_get(lpfc_fcf_record_mac_2, fcf_record), 2287 bf_get(lpfc_fcf_record_mac_3, fcf_record), 2288 bf_get(lpfc_fcf_record_mac_4, fcf_record), 2289 bf_get(lpfc_fcf_record_mac_5, fcf_record), 2290 bf_get(lpfc_fcf_record_fab_name_0, fcf_record), 2291 bf_get(lpfc_fcf_record_fab_name_1, fcf_record), 2292 bf_get(lpfc_fcf_record_fab_name_2, fcf_record), 2293 bf_get(lpfc_fcf_record_fab_name_3, fcf_record), 2294 bf_get(lpfc_fcf_record_fab_name_4, fcf_record), 2295 bf_get(lpfc_fcf_record_fab_name_5, fcf_record), 2296 bf_get(lpfc_fcf_record_fab_name_6, fcf_record), 2297 bf_get(lpfc_fcf_record_fab_name_7, fcf_record), 2298 bf_get(lpfc_fcf_record_switch_name_0, fcf_record), 2299 bf_get(lpfc_fcf_record_switch_name_1, fcf_record), 2300 bf_get(lpfc_fcf_record_switch_name_2, fcf_record), 2301 bf_get(lpfc_fcf_record_switch_name_3, fcf_record), 2302 bf_get(lpfc_fcf_record_switch_name_4, fcf_record), 2303 bf_get(lpfc_fcf_record_switch_name_5, fcf_record), 2304 bf_get(lpfc_fcf_record_switch_name_6, fcf_record), 2305 bf_get(lpfc_fcf_record_switch_name_7, fcf_record), 2306 next_fcf_index); 2307 } 2308 2309 /** 2310 * lpfc_sli4_fcf_record_match - testing new FCF record for matching existing FCF 2311 * @phba: pointer to lpfc hba data structure. 2312 * @fcf_rec: pointer to an existing FCF record. 2313 * @new_fcf_record: pointer to a new FCF record. 2314 * @new_vlan_id: vlan id from the new FCF record. 2315 * 2316 * This function performs matching test of a new FCF record against an existing 2317 * FCF record. If the new_vlan_id passed in is LPFC_FCOE_IGNORE_VID, vlan id 2318 * will not be used as part of the FCF record matching criteria. 2319 * 2320 * Returns true if all the fields matching, otherwise returns false. 2321 */ 2322 static bool 2323 lpfc_sli4_fcf_record_match(struct lpfc_hba *phba, 2324 struct lpfc_fcf_rec *fcf_rec, 2325 struct fcf_record *new_fcf_record, 2326 uint16_t new_vlan_id) 2327 { 2328 if (new_vlan_id != LPFC_FCOE_IGNORE_VID) 2329 if (!lpfc_vlan_id_match(fcf_rec->vlan_id, new_vlan_id)) 2330 return false; 2331 if (!lpfc_mac_addr_match(fcf_rec->mac_addr, new_fcf_record)) 2332 return false; 2333 if (!lpfc_sw_name_match(fcf_rec->switch_name, new_fcf_record)) 2334 return false; 2335 if (!lpfc_fab_name_match(fcf_rec->fabric_name, new_fcf_record)) 2336 return false; 2337 if (fcf_rec->priority != new_fcf_record->fip_priority) 2338 return false; 2339 return true; 2340 } 2341 2342 /** 2343 * lpfc_sli4_fcf_rr_next_proc - processing next roundrobin fcf 2344 * @vport: Pointer to vport object. 2345 * @fcf_index: index to next fcf. 2346 * 2347 * This function processing the roundrobin fcf failover to next fcf index. 2348 * When this function is invoked, there will be a current fcf registered 2349 * for flogi. 2350 * Return: 0 for continue retrying flogi on currently registered fcf; 2351 * 1 for stop flogi on currently registered fcf; 2352 */ 2353 int lpfc_sli4_fcf_rr_next_proc(struct lpfc_vport *vport, uint16_t fcf_index) 2354 { 2355 struct lpfc_hba *phba = vport->phba; 2356 int rc; 2357 2358 if (fcf_index == LPFC_FCOE_FCF_NEXT_NONE) { 2359 spin_lock_irq(&phba->hbalock); 2360 if (phba->hba_flag & HBA_DEVLOSS_TMO) { 2361 spin_unlock_irq(&phba->hbalock); 2362 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2363 "2872 Devloss tmo with no eligible " 2364 "FCF, unregister in-use FCF (x%x) " 2365 "and rescan FCF table\n", 2366 phba->fcf.current_rec.fcf_indx); 2367 lpfc_unregister_fcf_rescan(phba); 2368 goto stop_flogi_current_fcf; 2369 } 2370 /* Mark the end to FLOGI roundrobin failover */ 2371 phba->hba_flag &= ~FCF_RR_INPROG; 2372 /* Allow action to new fcf asynchronous event */ 2373 phba->fcf.fcf_flag &= ~(FCF_AVAILABLE | FCF_SCAN_DONE); 2374 spin_unlock_irq(&phba->hbalock); 2375 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2376 "2865 No FCF available, stop roundrobin FCF " 2377 "failover and change port state:x%x/x%x\n", 2378 phba->pport->port_state, LPFC_VPORT_UNKNOWN); 2379 phba->pport->port_state = LPFC_VPORT_UNKNOWN; 2380 2381 if (!phba->fcf.fcf_redisc_attempted) { 2382 lpfc_unregister_fcf(phba); 2383 2384 rc = lpfc_sli4_redisc_fcf_table(phba); 2385 if (!rc) { 2386 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2387 "3195 Rediscover FCF table\n"); 2388 phba->fcf.fcf_redisc_attempted = 1; 2389 lpfc_sli4_clear_fcf_rr_bmask(phba); 2390 } else { 2391 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP, 2392 "3196 Rediscover FCF table " 2393 "failed. Status:x%x\n", rc); 2394 } 2395 } else { 2396 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP, 2397 "3197 Already rediscover FCF table " 2398 "attempted. No more retry\n"); 2399 } 2400 goto stop_flogi_current_fcf; 2401 } else { 2402 lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_ELS, 2403 "2794 Try FLOGI roundrobin FCF failover to " 2404 "(x%x)\n", fcf_index); 2405 rc = lpfc_sli4_fcf_rr_read_fcf_rec(phba, fcf_index); 2406 if (rc) 2407 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP | LOG_ELS, 2408 "2761 FLOGI roundrobin FCF failover " 2409 "failed (rc:x%x) to read FCF (x%x)\n", 2410 rc, phba->fcf.current_rec.fcf_indx); 2411 else 2412 goto stop_flogi_current_fcf; 2413 } 2414 return 0; 2415 2416 stop_flogi_current_fcf: 2417 lpfc_can_disctmo(vport); 2418 return 1; 2419 } 2420 2421 /** 2422 * lpfc_sli4_fcf_pri_list_del 2423 * @phba: pointer to lpfc hba data structure. 2424 * @fcf_index: the index of the fcf record to delete 2425 * This routine checks the on list flag of the fcf_index to be deleted. 2426 * If it is one the list then it is removed from the list, and the flag 2427 * is cleared. This routine grab the hbalock before removing the fcf 2428 * record from the list. 2429 **/ 2430 static void lpfc_sli4_fcf_pri_list_del(struct lpfc_hba *phba, 2431 uint16_t fcf_index) 2432 { 2433 struct lpfc_fcf_pri *new_fcf_pri; 2434 2435 new_fcf_pri = &phba->fcf.fcf_pri[fcf_index]; 2436 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2437 "3058 deleting idx x%x pri x%x flg x%x\n", 2438 fcf_index, new_fcf_pri->fcf_rec.priority, 2439 new_fcf_pri->fcf_rec.flag); 2440 spin_lock_irq(&phba->hbalock); 2441 if (new_fcf_pri->fcf_rec.flag & LPFC_FCF_ON_PRI_LIST) { 2442 if (phba->fcf.current_rec.priority == 2443 new_fcf_pri->fcf_rec.priority) 2444 phba->fcf.eligible_fcf_cnt--; 2445 list_del_init(&new_fcf_pri->list); 2446 new_fcf_pri->fcf_rec.flag &= ~LPFC_FCF_ON_PRI_LIST; 2447 } 2448 spin_unlock_irq(&phba->hbalock); 2449 } 2450 2451 /** 2452 * lpfc_sli4_set_fcf_flogi_fail 2453 * @phba: pointer to lpfc hba data structure. 2454 * @fcf_index: the index of the fcf record to update 2455 * This routine acquires the hbalock and then set the LPFC_FCF_FLOGI_FAILED 2456 * flag so the the round robin slection for the particular priority level 2457 * will try a different fcf record that does not have this bit set. 2458 * If the fcf record is re-read for any reason this flag is cleared brfore 2459 * adding it to the priority list. 2460 **/ 2461 void 2462 lpfc_sli4_set_fcf_flogi_fail(struct lpfc_hba *phba, uint16_t fcf_index) 2463 { 2464 struct lpfc_fcf_pri *new_fcf_pri; 2465 new_fcf_pri = &phba->fcf.fcf_pri[fcf_index]; 2466 spin_lock_irq(&phba->hbalock); 2467 new_fcf_pri->fcf_rec.flag |= LPFC_FCF_FLOGI_FAILED; 2468 spin_unlock_irq(&phba->hbalock); 2469 } 2470 2471 /** 2472 * lpfc_sli4_fcf_pri_list_add 2473 * @phba: pointer to lpfc hba data structure. 2474 * @fcf_index: the index of the fcf record to add 2475 * @new_fcf_record: pointer to a new FCF record. 2476 * This routine checks the priority of the fcf_index to be added. 2477 * If it is a lower priority than the current head of the fcf_pri list 2478 * then it is added to the list in the right order. 2479 * If it is the same priority as the current head of the list then it 2480 * is added to the head of the list and its bit in the rr_bmask is set. 2481 * If the fcf_index to be added is of a higher priority than the current 2482 * head of the list then the rr_bmask is cleared, its bit is set in the 2483 * rr_bmask and it is added to the head of the list. 2484 * returns: 2485 * 0=success 1=failure 2486 **/ 2487 static int lpfc_sli4_fcf_pri_list_add(struct lpfc_hba *phba, 2488 uint16_t fcf_index, 2489 struct fcf_record *new_fcf_record) 2490 { 2491 uint16_t current_fcf_pri; 2492 uint16_t last_index; 2493 struct lpfc_fcf_pri *fcf_pri; 2494 struct lpfc_fcf_pri *next_fcf_pri; 2495 struct lpfc_fcf_pri *new_fcf_pri; 2496 int ret; 2497 2498 new_fcf_pri = &phba->fcf.fcf_pri[fcf_index]; 2499 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2500 "3059 adding idx x%x pri x%x flg x%x\n", 2501 fcf_index, new_fcf_record->fip_priority, 2502 new_fcf_pri->fcf_rec.flag); 2503 spin_lock_irq(&phba->hbalock); 2504 if (new_fcf_pri->fcf_rec.flag & LPFC_FCF_ON_PRI_LIST) 2505 list_del_init(&new_fcf_pri->list); 2506 new_fcf_pri->fcf_rec.fcf_index = fcf_index; 2507 new_fcf_pri->fcf_rec.priority = new_fcf_record->fip_priority; 2508 if (list_empty(&phba->fcf.fcf_pri_list)) { 2509 list_add(&new_fcf_pri->list, &phba->fcf.fcf_pri_list); 2510 ret = lpfc_sli4_fcf_rr_index_set(phba, 2511 new_fcf_pri->fcf_rec.fcf_index); 2512 goto out; 2513 } 2514 2515 last_index = find_first_bit(phba->fcf.fcf_rr_bmask, 2516 LPFC_SLI4_FCF_TBL_INDX_MAX); 2517 if (last_index >= LPFC_SLI4_FCF_TBL_INDX_MAX) { 2518 ret = 0; /* Empty rr list */ 2519 goto out; 2520 } 2521 current_fcf_pri = phba->fcf.fcf_pri[last_index].fcf_rec.priority; 2522 if (new_fcf_pri->fcf_rec.priority <= current_fcf_pri) { 2523 list_add(&new_fcf_pri->list, &phba->fcf.fcf_pri_list); 2524 if (new_fcf_pri->fcf_rec.priority < current_fcf_pri) { 2525 memset(phba->fcf.fcf_rr_bmask, 0, 2526 sizeof(*phba->fcf.fcf_rr_bmask)); 2527 /* fcfs_at_this_priority_level = 1; */ 2528 phba->fcf.eligible_fcf_cnt = 1; 2529 } else 2530 /* fcfs_at_this_priority_level++; */ 2531 phba->fcf.eligible_fcf_cnt++; 2532 ret = lpfc_sli4_fcf_rr_index_set(phba, 2533 new_fcf_pri->fcf_rec.fcf_index); 2534 goto out; 2535 } 2536 2537 list_for_each_entry_safe(fcf_pri, next_fcf_pri, 2538 &phba->fcf.fcf_pri_list, list) { 2539 if (new_fcf_pri->fcf_rec.priority <= 2540 fcf_pri->fcf_rec.priority) { 2541 if (fcf_pri->list.prev == &phba->fcf.fcf_pri_list) 2542 list_add(&new_fcf_pri->list, 2543 &phba->fcf.fcf_pri_list); 2544 else 2545 list_add(&new_fcf_pri->list, 2546 &((struct lpfc_fcf_pri *) 2547 fcf_pri->list.prev)->list); 2548 ret = 0; 2549 goto out; 2550 } else if (fcf_pri->list.next == &phba->fcf.fcf_pri_list 2551 || new_fcf_pri->fcf_rec.priority < 2552 next_fcf_pri->fcf_rec.priority) { 2553 list_add(&new_fcf_pri->list, &fcf_pri->list); 2554 ret = 0; 2555 goto out; 2556 } 2557 if (new_fcf_pri->fcf_rec.priority > fcf_pri->fcf_rec.priority) 2558 continue; 2559 2560 } 2561 ret = 1; 2562 out: 2563 /* we use = instead of |= to clear the FLOGI_FAILED flag. */ 2564 new_fcf_pri->fcf_rec.flag = LPFC_FCF_ON_PRI_LIST; 2565 spin_unlock_irq(&phba->hbalock); 2566 return ret; 2567 } 2568 2569 /** 2570 * lpfc_mbx_cmpl_fcf_scan_read_fcf_rec - fcf scan read_fcf mbox cmpl handler. 2571 * @phba: pointer to lpfc hba data structure. 2572 * @mboxq: pointer to mailbox object. 2573 * 2574 * This function iterates through all the fcf records available in 2575 * HBA and chooses the optimal FCF record for discovery. After finding 2576 * the FCF for discovery it registers the FCF record and kicks start 2577 * discovery. 2578 * If FCF_IN_USE flag is set in currently used FCF, the routine tries to 2579 * use an FCF record which matches fabric name and mac address of the 2580 * currently used FCF record. 2581 * If the driver supports only one FCF, it will try to use the FCF record 2582 * used by BOOT_BIOS. 2583 */ 2584 void 2585 lpfc_mbx_cmpl_fcf_scan_read_fcf_rec(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq) 2586 { 2587 struct fcf_record *new_fcf_record; 2588 uint32_t boot_flag, addr_mode; 2589 uint16_t fcf_index, next_fcf_index; 2590 struct lpfc_fcf_rec *fcf_rec = NULL; 2591 uint16_t vlan_id = LPFC_FCOE_NULL_VID; 2592 bool select_new_fcf; 2593 int rc; 2594 2595 /* If there is pending FCoE event restart FCF table scan */ 2596 if (lpfc_check_pending_fcoe_event(phba, LPFC_SKIP_UNREG_FCF)) { 2597 lpfc_sli4_mbox_cmd_free(phba, mboxq); 2598 return; 2599 } 2600 2601 /* Parse the FCF record from the non-embedded mailbox command */ 2602 new_fcf_record = lpfc_sli4_fcf_rec_mbox_parse(phba, mboxq, 2603 &next_fcf_index); 2604 if (!new_fcf_record) { 2605 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 2606 "2765 Mailbox command READ_FCF_RECORD " 2607 "failed to retrieve a FCF record.\n"); 2608 /* Let next new FCF event trigger fast failover */ 2609 spin_lock_irq(&phba->hbalock); 2610 phba->hba_flag &= ~FCF_TS_INPROG; 2611 spin_unlock_irq(&phba->hbalock); 2612 lpfc_sli4_mbox_cmd_free(phba, mboxq); 2613 return; 2614 } 2615 2616 /* Check the FCF record against the connection list */ 2617 rc = lpfc_match_fcf_conn_list(phba, new_fcf_record, &boot_flag, 2618 &addr_mode, &vlan_id); 2619 2620 /* Log the FCF record information if turned on */ 2621 lpfc_sli4_log_fcf_record_info(phba, new_fcf_record, vlan_id, 2622 next_fcf_index); 2623 2624 /* 2625 * If the fcf record does not match with connect list entries 2626 * read the next entry; otherwise, this is an eligible FCF 2627 * record for roundrobin FCF failover. 2628 */ 2629 if (!rc) { 2630 lpfc_sli4_fcf_pri_list_del(phba, 2631 bf_get(lpfc_fcf_record_fcf_index, 2632 new_fcf_record)); 2633 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP, 2634 "2781 FCF (x%x) failed connection " 2635 "list check: (x%x/x%x/%x)\n", 2636 bf_get(lpfc_fcf_record_fcf_index, 2637 new_fcf_record), 2638 bf_get(lpfc_fcf_record_fcf_avail, 2639 new_fcf_record), 2640 bf_get(lpfc_fcf_record_fcf_valid, 2641 new_fcf_record), 2642 bf_get(lpfc_fcf_record_fcf_sol, 2643 new_fcf_record)); 2644 if ((phba->fcf.fcf_flag & FCF_IN_USE) && 2645 lpfc_sli4_fcf_record_match(phba, &phba->fcf.current_rec, 2646 new_fcf_record, LPFC_FCOE_IGNORE_VID)) { 2647 if (bf_get(lpfc_fcf_record_fcf_index, new_fcf_record) != 2648 phba->fcf.current_rec.fcf_indx) { 2649 lpfc_printf_log(phba, KERN_ERR, 2650 LOG_TRACE_EVENT, 2651 "2862 FCF (x%x) matches property " 2652 "of in-use FCF (x%x)\n", 2653 bf_get(lpfc_fcf_record_fcf_index, 2654 new_fcf_record), 2655 phba->fcf.current_rec.fcf_indx); 2656 goto read_next_fcf; 2657 } 2658 /* 2659 * In case the current in-use FCF record becomes 2660 * invalid/unavailable during FCF discovery that 2661 * was not triggered by fast FCF failover process, 2662 * treat it as fast FCF failover. 2663 */ 2664 if (!(phba->fcf.fcf_flag & FCF_REDISC_PEND) && 2665 !(phba->fcf.fcf_flag & FCF_REDISC_FOV)) { 2666 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP, 2667 "2835 Invalid in-use FCF " 2668 "(x%x), enter FCF failover " 2669 "table scan.\n", 2670 phba->fcf.current_rec.fcf_indx); 2671 spin_lock_irq(&phba->hbalock); 2672 phba->fcf.fcf_flag |= FCF_REDISC_FOV; 2673 spin_unlock_irq(&phba->hbalock); 2674 lpfc_sli4_mbox_cmd_free(phba, mboxq); 2675 lpfc_sli4_fcf_scan_read_fcf_rec(phba, 2676 LPFC_FCOE_FCF_GET_FIRST); 2677 return; 2678 } 2679 } 2680 goto read_next_fcf; 2681 } else { 2682 fcf_index = bf_get(lpfc_fcf_record_fcf_index, new_fcf_record); 2683 rc = lpfc_sli4_fcf_pri_list_add(phba, fcf_index, 2684 new_fcf_record); 2685 if (rc) 2686 goto read_next_fcf; 2687 } 2688 2689 /* 2690 * If this is not the first FCF discovery of the HBA, use last 2691 * FCF record for the discovery. The condition that a rescan 2692 * matches the in-use FCF record: fabric name, switch name, mac 2693 * address, and vlan_id. 2694 */ 2695 spin_lock_irq(&phba->hbalock); 2696 if (phba->fcf.fcf_flag & FCF_IN_USE) { 2697 if (phba->cfg_fcf_failover_policy == LPFC_FCF_FOV && 2698 lpfc_sli4_fcf_record_match(phba, &phba->fcf.current_rec, 2699 new_fcf_record, vlan_id)) { 2700 if (bf_get(lpfc_fcf_record_fcf_index, new_fcf_record) == 2701 phba->fcf.current_rec.fcf_indx) { 2702 phba->fcf.fcf_flag |= FCF_AVAILABLE; 2703 if (phba->fcf.fcf_flag & FCF_REDISC_PEND) 2704 /* Stop FCF redisc wait timer */ 2705 __lpfc_sli4_stop_fcf_redisc_wait_timer( 2706 phba); 2707 else if (phba->fcf.fcf_flag & FCF_REDISC_FOV) 2708 /* Fast failover, mark completed */ 2709 phba->fcf.fcf_flag &= ~FCF_REDISC_FOV; 2710 spin_unlock_irq(&phba->hbalock); 2711 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2712 "2836 New FCF matches in-use " 2713 "FCF (x%x), port_state:x%x, " 2714 "fc_flag:x%x\n", 2715 phba->fcf.current_rec.fcf_indx, 2716 phba->pport->port_state, 2717 phba->pport->fc_flag); 2718 goto out; 2719 } else 2720 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 2721 "2863 New FCF (x%x) matches " 2722 "property of in-use FCF (x%x)\n", 2723 bf_get(lpfc_fcf_record_fcf_index, 2724 new_fcf_record), 2725 phba->fcf.current_rec.fcf_indx); 2726 } 2727 /* 2728 * Read next FCF record from HBA searching for the matching 2729 * with in-use record only if not during the fast failover 2730 * period. In case of fast failover period, it shall try to 2731 * determine whether the FCF record just read should be the 2732 * next candidate. 2733 */ 2734 if (!(phba->fcf.fcf_flag & FCF_REDISC_FOV)) { 2735 spin_unlock_irq(&phba->hbalock); 2736 goto read_next_fcf; 2737 } 2738 } 2739 /* 2740 * Update on failover FCF record only if it's in FCF fast-failover 2741 * period; otherwise, update on current FCF record. 2742 */ 2743 if (phba->fcf.fcf_flag & FCF_REDISC_FOV) 2744 fcf_rec = &phba->fcf.failover_rec; 2745 else 2746 fcf_rec = &phba->fcf.current_rec; 2747 2748 if (phba->fcf.fcf_flag & FCF_AVAILABLE) { 2749 /* 2750 * If the driver FCF record does not have boot flag 2751 * set and new hba fcf record has boot flag set, use 2752 * the new hba fcf record. 2753 */ 2754 if (boot_flag && !(fcf_rec->flag & BOOT_ENABLE)) { 2755 /* Choose this FCF record */ 2756 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2757 "2837 Update current FCF record " 2758 "(x%x) with new FCF record (x%x)\n", 2759 fcf_rec->fcf_indx, 2760 bf_get(lpfc_fcf_record_fcf_index, 2761 new_fcf_record)); 2762 __lpfc_update_fcf_record(phba, fcf_rec, new_fcf_record, 2763 addr_mode, vlan_id, BOOT_ENABLE); 2764 spin_unlock_irq(&phba->hbalock); 2765 goto read_next_fcf; 2766 } 2767 /* 2768 * If the driver FCF record has boot flag set and the 2769 * new hba FCF record does not have boot flag, read 2770 * the next FCF record. 2771 */ 2772 if (!boot_flag && (fcf_rec->flag & BOOT_ENABLE)) { 2773 spin_unlock_irq(&phba->hbalock); 2774 goto read_next_fcf; 2775 } 2776 /* 2777 * If the new hba FCF record has lower priority value 2778 * than the driver FCF record, use the new record. 2779 */ 2780 if (new_fcf_record->fip_priority < fcf_rec->priority) { 2781 /* Choose the new FCF record with lower priority */ 2782 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2783 "2838 Update current FCF record " 2784 "(x%x) with new FCF record (x%x)\n", 2785 fcf_rec->fcf_indx, 2786 bf_get(lpfc_fcf_record_fcf_index, 2787 new_fcf_record)); 2788 __lpfc_update_fcf_record(phba, fcf_rec, new_fcf_record, 2789 addr_mode, vlan_id, 0); 2790 /* Reset running random FCF selection count */ 2791 phba->fcf.eligible_fcf_cnt = 1; 2792 } else if (new_fcf_record->fip_priority == fcf_rec->priority) { 2793 /* Update running random FCF selection count */ 2794 phba->fcf.eligible_fcf_cnt++; 2795 select_new_fcf = lpfc_sli4_new_fcf_random_select(phba, 2796 phba->fcf.eligible_fcf_cnt); 2797 if (select_new_fcf) { 2798 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2799 "2839 Update current FCF record " 2800 "(x%x) with new FCF record (x%x)\n", 2801 fcf_rec->fcf_indx, 2802 bf_get(lpfc_fcf_record_fcf_index, 2803 new_fcf_record)); 2804 /* Choose the new FCF by random selection */ 2805 __lpfc_update_fcf_record(phba, fcf_rec, 2806 new_fcf_record, 2807 addr_mode, vlan_id, 0); 2808 } 2809 } 2810 spin_unlock_irq(&phba->hbalock); 2811 goto read_next_fcf; 2812 } 2813 /* 2814 * This is the first suitable FCF record, choose this record for 2815 * initial best-fit FCF. 2816 */ 2817 if (fcf_rec) { 2818 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2819 "2840 Update initial FCF candidate " 2820 "with FCF (x%x)\n", 2821 bf_get(lpfc_fcf_record_fcf_index, 2822 new_fcf_record)); 2823 __lpfc_update_fcf_record(phba, fcf_rec, new_fcf_record, 2824 addr_mode, vlan_id, (boot_flag ? 2825 BOOT_ENABLE : 0)); 2826 phba->fcf.fcf_flag |= FCF_AVAILABLE; 2827 /* Setup initial running random FCF selection count */ 2828 phba->fcf.eligible_fcf_cnt = 1; 2829 } 2830 spin_unlock_irq(&phba->hbalock); 2831 goto read_next_fcf; 2832 2833 read_next_fcf: 2834 lpfc_sli4_mbox_cmd_free(phba, mboxq); 2835 if (next_fcf_index == LPFC_FCOE_FCF_NEXT_NONE || next_fcf_index == 0) { 2836 if (phba->fcf.fcf_flag & FCF_REDISC_FOV) { 2837 /* 2838 * Case of FCF fast failover scan 2839 */ 2840 2841 /* 2842 * It has not found any suitable FCF record, cancel 2843 * FCF scan inprogress, and do nothing 2844 */ 2845 if (!(phba->fcf.failover_rec.flag & RECORD_VALID)) { 2846 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP, 2847 "2782 No suitable FCF found: " 2848 "(x%x/x%x)\n", 2849 phba->fcoe_eventtag_at_fcf_scan, 2850 bf_get(lpfc_fcf_record_fcf_index, 2851 new_fcf_record)); 2852 spin_lock_irq(&phba->hbalock); 2853 if (phba->hba_flag & HBA_DEVLOSS_TMO) { 2854 phba->hba_flag &= ~FCF_TS_INPROG; 2855 spin_unlock_irq(&phba->hbalock); 2856 /* Unregister in-use FCF and rescan */ 2857 lpfc_printf_log(phba, KERN_INFO, 2858 LOG_FIP, 2859 "2864 On devloss tmo " 2860 "unreg in-use FCF and " 2861 "rescan FCF table\n"); 2862 lpfc_unregister_fcf_rescan(phba); 2863 return; 2864 } 2865 /* 2866 * Let next new FCF event trigger fast failover 2867 */ 2868 phba->hba_flag &= ~FCF_TS_INPROG; 2869 spin_unlock_irq(&phba->hbalock); 2870 return; 2871 } 2872 /* 2873 * It has found a suitable FCF record that is not 2874 * the same as in-use FCF record, unregister the 2875 * in-use FCF record, replace the in-use FCF record 2876 * with the new FCF record, mark FCF fast failover 2877 * completed, and then start register the new FCF 2878 * record. 2879 */ 2880 2881 /* Unregister the current in-use FCF record */ 2882 lpfc_unregister_fcf(phba); 2883 2884 /* Replace in-use record with the new record */ 2885 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2886 "2842 Replace in-use FCF (x%x) " 2887 "with failover FCF (x%x)\n", 2888 phba->fcf.current_rec.fcf_indx, 2889 phba->fcf.failover_rec.fcf_indx); 2890 memcpy(&phba->fcf.current_rec, 2891 &phba->fcf.failover_rec, 2892 sizeof(struct lpfc_fcf_rec)); 2893 /* 2894 * Mark the fast FCF failover rediscovery completed 2895 * and the start of the first round of the roundrobin 2896 * FCF failover. 2897 */ 2898 spin_lock_irq(&phba->hbalock); 2899 phba->fcf.fcf_flag &= ~FCF_REDISC_FOV; 2900 spin_unlock_irq(&phba->hbalock); 2901 /* Register to the new FCF record */ 2902 lpfc_register_fcf(phba); 2903 } else { 2904 /* 2905 * In case of transaction period to fast FCF failover, 2906 * do nothing when search to the end of the FCF table. 2907 */ 2908 if ((phba->fcf.fcf_flag & FCF_REDISC_EVT) || 2909 (phba->fcf.fcf_flag & FCF_REDISC_PEND)) 2910 return; 2911 2912 if (phba->cfg_fcf_failover_policy == LPFC_FCF_FOV && 2913 phba->fcf.fcf_flag & FCF_IN_USE) { 2914 /* 2915 * In case the current in-use FCF record no 2916 * longer existed during FCF discovery that 2917 * was not triggered by fast FCF failover 2918 * process, treat it as fast FCF failover. 2919 */ 2920 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2921 "2841 In-use FCF record (x%x) " 2922 "not reported, entering fast " 2923 "FCF failover mode scanning.\n", 2924 phba->fcf.current_rec.fcf_indx); 2925 spin_lock_irq(&phba->hbalock); 2926 phba->fcf.fcf_flag |= FCF_REDISC_FOV; 2927 spin_unlock_irq(&phba->hbalock); 2928 lpfc_sli4_fcf_scan_read_fcf_rec(phba, 2929 LPFC_FCOE_FCF_GET_FIRST); 2930 return; 2931 } 2932 /* Register to the new FCF record */ 2933 lpfc_register_fcf(phba); 2934 } 2935 } else 2936 lpfc_sli4_fcf_scan_read_fcf_rec(phba, next_fcf_index); 2937 return; 2938 2939 out: 2940 lpfc_sli4_mbox_cmd_free(phba, mboxq); 2941 lpfc_register_fcf(phba); 2942 2943 return; 2944 } 2945 2946 /** 2947 * lpfc_mbx_cmpl_fcf_rr_read_fcf_rec - fcf roundrobin read_fcf mbox cmpl hdler 2948 * @phba: pointer to lpfc hba data structure. 2949 * @mboxq: pointer to mailbox object. 2950 * 2951 * This is the callback function for FLOGI failure roundrobin FCF failover 2952 * read FCF record mailbox command from the eligible FCF record bmask for 2953 * performing the failover. If the FCF read back is not valid/available, it 2954 * fails through to retrying FLOGI to the currently registered FCF again. 2955 * Otherwise, if the FCF read back is valid and available, it will set the 2956 * newly read FCF record to the failover FCF record, unregister currently 2957 * registered FCF record, copy the failover FCF record to the current 2958 * FCF record, and then register the current FCF record before proceeding 2959 * to trying FLOGI on the new failover FCF. 2960 */ 2961 void 2962 lpfc_mbx_cmpl_fcf_rr_read_fcf_rec(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq) 2963 { 2964 struct fcf_record *new_fcf_record; 2965 uint32_t boot_flag, addr_mode; 2966 uint16_t next_fcf_index, fcf_index; 2967 uint16_t current_fcf_index; 2968 uint16_t vlan_id; 2969 int rc; 2970 2971 /* If link state is not up, stop the roundrobin failover process */ 2972 if (phba->link_state < LPFC_LINK_UP) { 2973 spin_lock_irq(&phba->hbalock); 2974 phba->fcf.fcf_flag &= ~FCF_DISCOVERY; 2975 phba->hba_flag &= ~FCF_RR_INPROG; 2976 spin_unlock_irq(&phba->hbalock); 2977 goto out; 2978 } 2979 2980 /* Parse the FCF record from the non-embedded mailbox command */ 2981 new_fcf_record = lpfc_sli4_fcf_rec_mbox_parse(phba, mboxq, 2982 &next_fcf_index); 2983 if (!new_fcf_record) { 2984 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP, 2985 "2766 Mailbox command READ_FCF_RECORD " 2986 "failed to retrieve a FCF record. " 2987 "hba_flg x%x fcf_flg x%x\n", phba->hba_flag, 2988 phba->fcf.fcf_flag); 2989 lpfc_unregister_fcf_rescan(phba); 2990 goto out; 2991 } 2992 2993 /* Get the needed parameters from FCF record */ 2994 rc = lpfc_match_fcf_conn_list(phba, new_fcf_record, &boot_flag, 2995 &addr_mode, &vlan_id); 2996 2997 /* Log the FCF record information if turned on */ 2998 lpfc_sli4_log_fcf_record_info(phba, new_fcf_record, vlan_id, 2999 next_fcf_index); 3000 3001 fcf_index = bf_get(lpfc_fcf_record_fcf_index, new_fcf_record); 3002 if (!rc) { 3003 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 3004 "2848 Remove ineligible FCF (x%x) from " 3005 "from roundrobin bmask\n", fcf_index); 3006 /* Clear roundrobin bmask bit for ineligible FCF */ 3007 lpfc_sli4_fcf_rr_index_clear(phba, fcf_index); 3008 /* Perform next round of roundrobin FCF failover */ 3009 fcf_index = lpfc_sli4_fcf_rr_next_index_get(phba); 3010 rc = lpfc_sli4_fcf_rr_next_proc(phba->pport, fcf_index); 3011 if (rc) 3012 goto out; 3013 goto error_out; 3014 } 3015 3016 if (fcf_index == phba->fcf.current_rec.fcf_indx) { 3017 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 3018 "2760 Perform FLOGI roundrobin FCF failover: " 3019 "FCF (x%x) back to FCF (x%x)\n", 3020 phba->fcf.current_rec.fcf_indx, fcf_index); 3021 /* Wait 500 ms before retrying FLOGI to current FCF */ 3022 msleep(500); 3023 lpfc_issue_init_vfi(phba->pport); 3024 goto out; 3025 } 3026 3027 /* Upload new FCF record to the failover FCF record */ 3028 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 3029 "2834 Update current FCF (x%x) with new FCF (x%x)\n", 3030 phba->fcf.failover_rec.fcf_indx, fcf_index); 3031 spin_lock_irq(&phba->hbalock); 3032 __lpfc_update_fcf_record(phba, &phba->fcf.failover_rec, 3033 new_fcf_record, addr_mode, vlan_id, 3034 (boot_flag ? BOOT_ENABLE : 0)); 3035 spin_unlock_irq(&phba->hbalock); 3036 3037 current_fcf_index = phba->fcf.current_rec.fcf_indx; 3038 3039 /* Unregister the current in-use FCF record */ 3040 lpfc_unregister_fcf(phba); 3041 3042 /* Replace in-use record with the new record */ 3043 memcpy(&phba->fcf.current_rec, &phba->fcf.failover_rec, 3044 sizeof(struct lpfc_fcf_rec)); 3045 3046 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 3047 "2783 Perform FLOGI roundrobin FCF failover: FCF " 3048 "(x%x) to FCF (x%x)\n", current_fcf_index, fcf_index); 3049 3050 error_out: 3051 lpfc_register_fcf(phba); 3052 out: 3053 lpfc_sli4_mbox_cmd_free(phba, mboxq); 3054 } 3055 3056 /** 3057 * lpfc_mbx_cmpl_read_fcf_rec - read fcf completion handler. 3058 * @phba: pointer to lpfc hba data structure. 3059 * @mboxq: pointer to mailbox object. 3060 * 3061 * This is the callback function of read FCF record mailbox command for 3062 * updating the eligible FCF bmask for FLOGI failure roundrobin FCF 3063 * failover when a new FCF event happened. If the FCF read back is 3064 * valid/available and it passes the connection list check, it updates 3065 * the bmask for the eligible FCF record for roundrobin failover. 3066 */ 3067 void 3068 lpfc_mbx_cmpl_read_fcf_rec(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq) 3069 { 3070 struct fcf_record *new_fcf_record; 3071 uint32_t boot_flag, addr_mode; 3072 uint16_t fcf_index, next_fcf_index; 3073 uint16_t vlan_id; 3074 int rc; 3075 3076 /* If link state is not up, no need to proceed */ 3077 if (phba->link_state < LPFC_LINK_UP) 3078 goto out; 3079 3080 /* If FCF discovery period is over, no need to proceed */ 3081 if (!(phba->fcf.fcf_flag & FCF_DISCOVERY)) 3082 goto out; 3083 3084 /* Parse the FCF record from the non-embedded mailbox command */ 3085 new_fcf_record = lpfc_sli4_fcf_rec_mbox_parse(phba, mboxq, 3086 &next_fcf_index); 3087 if (!new_fcf_record) { 3088 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 3089 "2767 Mailbox command READ_FCF_RECORD " 3090 "failed to retrieve a FCF record.\n"); 3091 goto out; 3092 } 3093 3094 /* Check the connection list for eligibility */ 3095 rc = lpfc_match_fcf_conn_list(phba, new_fcf_record, &boot_flag, 3096 &addr_mode, &vlan_id); 3097 3098 /* Log the FCF record information if turned on */ 3099 lpfc_sli4_log_fcf_record_info(phba, new_fcf_record, vlan_id, 3100 next_fcf_index); 3101 3102 if (!rc) 3103 goto out; 3104 3105 /* Update the eligible FCF record index bmask */ 3106 fcf_index = bf_get(lpfc_fcf_record_fcf_index, new_fcf_record); 3107 3108 rc = lpfc_sli4_fcf_pri_list_add(phba, fcf_index, new_fcf_record); 3109 3110 out: 3111 lpfc_sli4_mbox_cmd_free(phba, mboxq); 3112 } 3113 3114 /** 3115 * lpfc_init_vfi_cmpl - Completion handler for init_vfi mbox command. 3116 * @phba: pointer to lpfc hba data structure. 3117 * @mboxq: pointer to mailbox data structure. 3118 * 3119 * This function handles completion of init vfi mailbox command. 3120 */ 3121 static void 3122 lpfc_init_vfi_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq) 3123 { 3124 struct lpfc_vport *vport = mboxq->vport; 3125 3126 /* 3127 * VFI not supported on interface type 0, just do the flogi 3128 * Also continue if the VFI is in use - just use the same one. 3129 */ 3130 if (mboxq->u.mb.mbxStatus && 3131 (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) != 3132 LPFC_SLI_INTF_IF_TYPE_0) && 3133 mboxq->u.mb.mbxStatus != MBX_VFI_IN_USE) { 3134 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 3135 "2891 Init VFI mailbox failed 0x%x\n", 3136 mboxq->u.mb.mbxStatus); 3137 mempool_free(mboxq, phba->mbox_mem_pool); 3138 lpfc_vport_set_state(vport, FC_VPORT_FAILED); 3139 return; 3140 } 3141 3142 lpfc_initial_flogi(vport); 3143 mempool_free(mboxq, phba->mbox_mem_pool); 3144 return; 3145 } 3146 3147 /** 3148 * lpfc_issue_init_vfi - Issue init_vfi mailbox command. 3149 * @vport: pointer to lpfc_vport data structure. 3150 * 3151 * This function issue a init_vfi mailbox command to initialize the VFI and 3152 * VPI for the physical port. 3153 */ 3154 void 3155 lpfc_issue_init_vfi(struct lpfc_vport *vport) 3156 { 3157 LPFC_MBOXQ_t *mboxq; 3158 int rc; 3159 struct lpfc_hba *phba = vport->phba; 3160 3161 mboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 3162 if (!mboxq) { 3163 lpfc_printf_vlog(vport, KERN_ERR, 3164 LOG_TRACE_EVENT, "2892 Failed to allocate " 3165 "init_vfi mailbox\n"); 3166 return; 3167 } 3168 lpfc_init_vfi(mboxq, vport); 3169 mboxq->mbox_cmpl = lpfc_init_vfi_cmpl; 3170 rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_NOWAIT); 3171 if (rc == MBX_NOT_FINISHED) { 3172 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 3173 "2893 Failed to issue init_vfi mailbox\n"); 3174 mempool_free(mboxq, vport->phba->mbox_mem_pool); 3175 } 3176 } 3177 3178 /** 3179 * lpfc_init_vpi_cmpl - Completion handler for init_vpi mbox command. 3180 * @phba: pointer to lpfc hba data structure. 3181 * @mboxq: pointer to mailbox data structure. 3182 * 3183 * This function handles completion of init vpi mailbox command. 3184 */ 3185 void 3186 lpfc_init_vpi_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq) 3187 { 3188 struct lpfc_vport *vport = mboxq->vport; 3189 struct lpfc_nodelist *ndlp; 3190 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 3191 3192 if (mboxq->u.mb.mbxStatus) { 3193 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 3194 "2609 Init VPI mailbox failed 0x%x\n", 3195 mboxq->u.mb.mbxStatus); 3196 mempool_free(mboxq, phba->mbox_mem_pool); 3197 lpfc_vport_set_state(vport, FC_VPORT_FAILED); 3198 return; 3199 } 3200 spin_lock_irq(shost->host_lock); 3201 vport->fc_flag &= ~FC_VPORT_NEEDS_INIT_VPI; 3202 spin_unlock_irq(shost->host_lock); 3203 3204 /* If this port is physical port or FDISC is done, do reg_vpi */ 3205 if ((phba->pport == vport) || (vport->port_state == LPFC_FDISC)) { 3206 ndlp = lpfc_findnode_did(vport, Fabric_DID); 3207 if (!ndlp) 3208 lpfc_printf_vlog(vport, KERN_ERR, 3209 LOG_TRACE_EVENT, 3210 "2731 Cannot find fabric " 3211 "controller node\n"); 3212 else 3213 lpfc_register_new_vport(phba, vport, ndlp); 3214 mempool_free(mboxq, phba->mbox_mem_pool); 3215 return; 3216 } 3217 3218 if (phba->link_flag & LS_NPIV_FAB_SUPPORTED) 3219 lpfc_initial_fdisc(vport); 3220 else { 3221 lpfc_vport_set_state(vport, FC_VPORT_NO_FABRIC_SUPP); 3222 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 3223 "2606 No NPIV Fabric support\n"); 3224 } 3225 mempool_free(mboxq, phba->mbox_mem_pool); 3226 return; 3227 } 3228 3229 /** 3230 * lpfc_issue_init_vpi - Issue init_vpi mailbox command. 3231 * @vport: pointer to lpfc_vport data structure. 3232 * 3233 * This function issue a init_vpi mailbox command to initialize 3234 * VPI for the vport. 3235 */ 3236 void 3237 lpfc_issue_init_vpi(struct lpfc_vport *vport) 3238 { 3239 LPFC_MBOXQ_t *mboxq; 3240 int rc, vpi; 3241 3242 if ((vport->port_type != LPFC_PHYSICAL_PORT) && (!vport->vpi)) { 3243 vpi = lpfc_alloc_vpi(vport->phba); 3244 if (!vpi) { 3245 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 3246 "3303 Failed to obtain vport vpi\n"); 3247 lpfc_vport_set_state(vport, FC_VPORT_FAILED); 3248 return; 3249 } 3250 vport->vpi = vpi; 3251 } 3252 3253 mboxq = mempool_alloc(vport->phba->mbox_mem_pool, GFP_KERNEL); 3254 if (!mboxq) { 3255 lpfc_printf_vlog(vport, KERN_ERR, 3256 LOG_TRACE_EVENT, "2607 Failed to allocate " 3257 "init_vpi mailbox\n"); 3258 return; 3259 } 3260 lpfc_init_vpi(vport->phba, mboxq, vport->vpi); 3261 mboxq->vport = vport; 3262 mboxq->mbox_cmpl = lpfc_init_vpi_cmpl; 3263 rc = lpfc_sli_issue_mbox(vport->phba, mboxq, MBX_NOWAIT); 3264 if (rc == MBX_NOT_FINISHED) { 3265 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 3266 "2608 Failed to issue init_vpi mailbox\n"); 3267 mempool_free(mboxq, vport->phba->mbox_mem_pool); 3268 } 3269 } 3270 3271 /** 3272 * lpfc_start_fdiscs - send fdiscs for each vports on this port. 3273 * @phba: pointer to lpfc hba data structure. 3274 * 3275 * This function loops through the list of vports on the @phba and issues an 3276 * FDISC if possible. 3277 */ 3278 void 3279 lpfc_start_fdiscs(struct lpfc_hba *phba) 3280 { 3281 struct lpfc_vport **vports; 3282 int i; 3283 3284 vports = lpfc_create_vport_work_array(phba); 3285 if (vports != NULL) { 3286 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) { 3287 if (vports[i]->port_type == LPFC_PHYSICAL_PORT) 3288 continue; 3289 /* There are no vpi for this vport */ 3290 if (vports[i]->vpi > phba->max_vpi) { 3291 lpfc_vport_set_state(vports[i], 3292 FC_VPORT_FAILED); 3293 continue; 3294 } 3295 if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) { 3296 lpfc_vport_set_state(vports[i], 3297 FC_VPORT_LINKDOWN); 3298 continue; 3299 } 3300 if (vports[i]->fc_flag & FC_VPORT_NEEDS_INIT_VPI) { 3301 lpfc_issue_init_vpi(vports[i]); 3302 continue; 3303 } 3304 if (phba->link_flag & LS_NPIV_FAB_SUPPORTED) 3305 lpfc_initial_fdisc(vports[i]); 3306 else { 3307 lpfc_vport_set_state(vports[i], 3308 FC_VPORT_NO_FABRIC_SUPP); 3309 lpfc_printf_vlog(vports[i], KERN_ERR, 3310 LOG_TRACE_EVENT, 3311 "0259 No NPIV " 3312 "Fabric support\n"); 3313 } 3314 } 3315 } 3316 lpfc_destroy_vport_work_array(phba, vports); 3317 } 3318 3319 void 3320 lpfc_mbx_cmpl_reg_vfi(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq) 3321 { 3322 struct lpfc_vport *vport = mboxq->vport; 3323 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 3324 3325 /* 3326 * VFI not supported for interface type 0, so ignore any mailbox 3327 * error (except VFI in use) and continue with the discovery. 3328 */ 3329 if (mboxq->u.mb.mbxStatus && 3330 (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) != 3331 LPFC_SLI_INTF_IF_TYPE_0) && 3332 mboxq->u.mb.mbxStatus != MBX_VFI_IN_USE) { 3333 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 3334 "2018 REG_VFI mbxStatus error x%x " 3335 "HBA state x%x\n", 3336 mboxq->u.mb.mbxStatus, vport->port_state); 3337 if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) { 3338 /* FLOGI failed, use loop map to make discovery list */ 3339 lpfc_disc_list_loopmap(vport); 3340 /* Start discovery */ 3341 lpfc_disc_start(vport); 3342 goto out_free_mem; 3343 } 3344 lpfc_vport_set_state(vport, FC_VPORT_FAILED); 3345 goto out_free_mem; 3346 } 3347 3348 /* If the VFI is already registered, there is nothing else to do 3349 * Unless this was a VFI update and we are in PT2PT mode, then 3350 * we should drop through to set the port state to ready. 3351 */ 3352 if (vport->fc_flag & FC_VFI_REGISTERED) 3353 if (!(phba->sli_rev == LPFC_SLI_REV4 && 3354 vport->fc_flag & FC_PT2PT)) 3355 goto out_free_mem; 3356 3357 /* The VPI is implicitly registered when the VFI is registered */ 3358 spin_lock_irq(shost->host_lock); 3359 vport->vpi_state |= LPFC_VPI_REGISTERED; 3360 vport->fc_flag |= FC_VFI_REGISTERED; 3361 vport->fc_flag &= ~FC_VPORT_NEEDS_REG_VPI; 3362 vport->fc_flag &= ~FC_VPORT_NEEDS_INIT_VPI; 3363 spin_unlock_irq(shost->host_lock); 3364 3365 /* In case SLI4 FC loopback test, we are ready */ 3366 if ((phba->sli_rev == LPFC_SLI_REV4) && 3367 (phba->link_flag & LS_LOOPBACK_MODE)) { 3368 phba->link_state = LPFC_HBA_READY; 3369 goto out_free_mem; 3370 } 3371 3372 lpfc_printf_vlog(vport, KERN_INFO, LOG_SLI, 3373 "3313 cmpl reg vfi port_state:%x fc_flag:%x myDid:%x " 3374 "alpacnt:%d LinkState:%x topology:%x\n", 3375 vport->port_state, vport->fc_flag, vport->fc_myDID, 3376 vport->phba->alpa_map[0], 3377 phba->link_state, phba->fc_topology); 3378 3379 if (vport->port_state == LPFC_FABRIC_CFG_LINK) { 3380 /* 3381 * For private loop or for NPort pt2pt, 3382 * just start discovery and we are done. 3383 */ 3384 if ((vport->fc_flag & FC_PT2PT) || 3385 ((phba->fc_topology == LPFC_TOPOLOGY_LOOP) && 3386 !(vport->fc_flag & FC_PUBLIC_LOOP))) { 3387 3388 /* Use loop map to make discovery list */ 3389 lpfc_disc_list_loopmap(vport); 3390 /* Start discovery */ 3391 if (vport->fc_flag & FC_PT2PT) 3392 vport->port_state = LPFC_VPORT_READY; 3393 else 3394 lpfc_disc_start(vport); 3395 } else { 3396 lpfc_start_fdiscs(phba); 3397 lpfc_do_scr_ns_plogi(phba, vport); 3398 } 3399 } 3400 3401 out_free_mem: 3402 lpfc_mbox_rsrc_cleanup(phba, mboxq, MBOX_THD_UNLOCKED); 3403 } 3404 3405 static void 3406 lpfc_mbx_cmpl_read_sparam(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 3407 { 3408 MAILBOX_t *mb = &pmb->u.mb; 3409 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *)pmb->ctx_buf; 3410 struct lpfc_vport *vport = pmb->vport; 3411 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 3412 struct serv_parm *sp = &vport->fc_sparam; 3413 uint32_t ed_tov; 3414 3415 /* Check for error */ 3416 if (mb->mbxStatus) { 3417 /* READ_SPARAM mbox error <mbxStatus> state <hba_state> */ 3418 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 3419 "0319 READ_SPARAM mbxStatus error x%x " 3420 "hba state x%x>\n", 3421 mb->mbxStatus, vport->port_state); 3422 lpfc_linkdown(phba); 3423 goto out; 3424 } 3425 3426 memcpy((uint8_t *) &vport->fc_sparam, (uint8_t *) mp->virt, 3427 sizeof (struct serv_parm)); 3428 3429 ed_tov = be32_to_cpu(sp->cmn.e_d_tov); 3430 if (sp->cmn.edtovResolution) /* E_D_TOV ticks are in nanoseconds */ 3431 ed_tov = (ed_tov + 999999) / 1000000; 3432 3433 phba->fc_edtov = ed_tov; 3434 phba->fc_ratov = (2 * ed_tov) / 1000; 3435 if (phba->fc_ratov < FF_DEF_RATOV) { 3436 /* RA_TOV should be atleast 10sec for initial flogi */ 3437 phba->fc_ratov = FF_DEF_RATOV; 3438 } 3439 3440 lpfc_update_vport_wwn(vport); 3441 fc_host_port_name(shost) = wwn_to_u64(vport->fc_portname.u.wwn); 3442 if (vport->port_type == LPFC_PHYSICAL_PORT) { 3443 memcpy(&phba->wwnn, &vport->fc_nodename, sizeof(phba->wwnn)); 3444 memcpy(&phba->wwpn, &vport->fc_portname, sizeof(phba->wwnn)); 3445 } 3446 3447 lpfc_mbox_rsrc_cleanup(phba, pmb, MBOX_THD_UNLOCKED); 3448 3449 /* Check if sending the FLOGI is being deferred to after we get 3450 * up to date CSPs from MBX_READ_SPARAM. 3451 */ 3452 if (phba->hba_flag & HBA_DEFER_FLOGI) { 3453 lpfc_initial_flogi(vport); 3454 phba->hba_flag &= ~HBA_DEFER_FLOGI; 3455 } 3456 return; 3457 3458 out: 3459 lpfc_mbox_rsrc_cleanup(phba, pmb, MBOX_THD_UNLOCKED); 3460 lpfc_issue_clear_la(phba, vport); 3461 } 3462 3463 static void 3464 lpfc_mbx_process_link_up(struct lpfc_hba *phba, struct lpfc_mbx_read_top *la) 3465 { 3466 struct lpfc_vport *vport = phba->pport; 3467 LPFC_MBOXQ_t *sparam_mbox, *cfglink_mbox = NULL; 3468 struct Scsi_Host *shost; 3469 int i; 3470 int rc; 3471 struct fcf_record *fcf_record; 3472 uint32_t fc_flags = 0; 3473 unsigned long iflags; 3474 3475 spin_lock_irqsave(&phba->hbalock, iflags); 3476 phba->fc_linkspeed = bf_get(lpfc_mbx_read_top_link_spd, la); 3477 3478 if (!(phba->hba_flag & HBA_FCOE_MODE)) { 3479 switch (bf_get(lpfc_mbx_read_top_link_spd, la)) { 3480 case LPFC_LINK_SPEED_1GHZ: 3481 case LPFC_LINK_SPEED_2GHZ: 3482 case LPFC_LINK_SPEED_4GHZ: 3483 case LPFC_LINK_SPEED_8GHZ: 3484 case LPFC_LINK_SPEED_10GHZ: 3485 case LPFC_LINK_SPEED_16GHZ: 3486 case LPFC_LINK_SPEED_32GHZ: 3487 case LPFC_LINK_SPEED_64GHZ: 3488 case LPFC_LINK_SPEED_128GHZ: 3489 case LPFC_LINK_SPEED_256GHZ: 3490 break; 3491 default: 3492 phba->fc_linkspeed = LPFC_LINK_SPEED_UNKNOWN; 3493 break; 3494 } 3495 } 3496 3497 if (phba->fc_topology && 3498 phba->fc_topology != bf_get(lpfc_mbx_read_top_topology, la)) { 3499 lpfc_printf_log(phba, KERN_WARNING, LOG_SLI, 3500 "3314 Toplogy changed was 0x%x is 0x%x\n", 3501 phba->fc_topology, 3502 bf_get(lpfc_mbx_read_top_topology, la)); 3503 phba->fc_topology_changed = 1; 3504 } 3505 3506 phba->fc_topology = bf_get(lpfc_mbx_read_top_topology, la); 3507 phba->link_flag &= ~(LS_NPIV_FAB_SUPPORTED | LS_CT_VEN_RPA); 3508 3509 shost = lpfc_shost_from_vport(vport); 3510 if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) { 3511 phba->sli3_options &= ~LPFC_SLI3_NPIV_ENABLED; 3512 3513 /* if npiv is enabled and this adapter supports npiv log 3514 * a message that npiv is not supported in this topology 3515 */ 3516 if (phba->cfg_enable_npiv && phba->max_vpi) 3517 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT, 3518 "1309 Link Up Event npiv not supported in loop " 3519 "topology\n"); 3520 /* Get Loop Map information */ 3521 if (bf_get(lpfc_mbx_read_top_il, la)) 3522 fc_flags |= FC_LBIT; 3523 3524 vport->fc_myDID = bf_get(lpfc_mbx_read_top_alpa_granted, la); 3525 i = la->lilpBde64.tus.f.bdeSize; 3526 3527 if (i == 0) { 3528 phba->alpa_map[0] = 0; 3529 } else { 3530 if (vport->cfg_log_verbose & LOG_LINK_EVENT) { 3531 int numalpa, j, k; 3532 union { 3533 uint8_t pamap[16]; 3534 struct { 3535 uint32_t wd1; 3536 uint32_t wd2; 3537 uint32_t wd3; 3538 uint32_t wd4; 3539 } pa; 3540 } un; 3541 numalpa = phba->alpa_map[0]; 3542 j = 0; 3543 while (j < numalpa) { 3544 memset(un.pamap, 0, 16); 3545 for (k = 1; j < numalpa; k++) { 3546 un.pamap[k - 1] = 3547 phba->alpa_map[j + 1]; 3548 j++; 3549 if (k == 16) 3550 break; 3551 } 3552 /* Link Up Event ALPA map */ 3553 lpfc_printf_log(phba, 3554 KERN_WARNING, 3555 LOG_LINK_EVENT, 3556 "1304 Link Up Event " 3557 "ALPA map Data: x%x " 3558 "x%x x%x x%x\n", 3559 un.pa.wd1, un.pa.wd2, 3560 un.pa.wd3, un.pa.wd4); 3561 } 3562 } 3563 } 3564 } else { 3565 if (!(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)) { 3566 if (phba->max_vpi && phba->cfg_enable_npiv && 3567 (phba->sli_rev >= LPFC_SLI_REV3)) 3568 phba->sli3_options |= LPFC_SLI3_NPIV_ENABLED; 3569 } 3570 vport->fc_myDID = phba->fc_pref_DID; 3571 fc_flags |= FC_LBIT; 3572 } 3573 spin_unlock_irqrestore(&phba->hbalock, iflags); 3574 3575 if (fc_flags) { 3576 spin_lock_irqsave(shost->host_lock, iflags); 3577 vport->fc_flag |= fc_flags; 3578 spin_unlock_irqrestore(shost->host_lock, iflags); 3579 } 3580 3581 lpfc_linkup(phba); 3582 sparam_mbox = NULL; 3583 3584 sparam_mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 3585 if (!sparam_mbox) 3586 goto out; 3587 3588 rc = lpfc_read_sparam(phba, sparam_mbox, 0); 3589 if (rc) { 3590 mempool_free(sparam_mbox, phba->mbox_mem_pool); 3591 goto out; 3592 } 3593 sparam_mbox->vport = vport; 3594 sparam_mbox->mbox_cmpl = lpfc_mbx_cmpl_read_sparam; 3595 rc = lpfc_sli_issue_mbox(phba, sparam_mbox, MBX_NOWAIT); 3596 if (rc == MBX_NOT_FINISHED) { 3597 lpfc_mbox_rsrc_cleanup(phba, sparam_mbox, MBOX_THD_UNLOCKED); 3598 goto out; 3599 } 3600 3601 if (!(phba->hba_flag & HBA_FCOE_MODE)) { 3602 cfglink_mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 3603 if (!cfglink_mbox) 3604 goto out; 3605 vport->port_state = LPFC_LOCAL_CFG_LINK; 3606 lpfc_config_link(phba, cfglink_mbox); 3607 cfglink_mbox->vport = vport; 3608 cfglink_mbox->mbox_cmpl = lpfc_mbx_cmpl_local_config_link; 3609 rc = lpfc_sli_issue_mbox(phba, cfglink_mbox, MBX_NOWAIT); 3610 if (rc == MBX_NOT_FINISHED) { 3611 mempool_free(cfglink_mbox, phba->mbox_mem_pool); 3612 goto out; 3613 } 3614 } else { 3615 vport->port_state = LPFC_VPORT_UNKNOWN; 3616 /* 3617 * Add the driver's default FCF record at FCF index 0 now. This 3618 * is phase 1 implementation that support FCF index 0 and driver 3619 * defaults. 3620 */ 3621 if (!(phba->hba_flag & HBA_FIP_SUPPORT)) { 3622 fcf_record = kzalloc(sizeof(struct fcf_record), 3623 GFP_KERNEL); 3624 if (unlikely(!fcf_record)) { 3625 lpfc_printf_log(phba, KERN_ERR, 3626 LOG_TRACE_EVENT, 3627 "2554 Could not allocate memory for " 3628 "fcf record\n"); 3629 rc = -ENODEV; 3630 goto out; 3631 } 3632 3633 lpfc_sli4_build_dflt_fcf_record(phba, fcf_record, 3634 LPFC_FCOE_FCF_DEF_INDEX); 3635 rc = lpfc_sli4_add_fcf_record(phba, fcf_record); 3636 if (unlikely(rc)) { 3637 lpfc_printf_log(phba, KERN_ERR, 3638 LOG_TRACE_EVENT, 3639 "2013 Could not manually add FCF " 3640 "record 0, status %d\n", rc); 3641 rc = -ENODEV; 3642 kfree(fcf_record); 3643 goto out; 3644 } 3645 kfree(fcf_record); 3646 } 3647 /* 3648 * The driver is expected to do FIP/FCF. Call the port 3649 * and get the FCF Table. 3650 */ 3651 spin_lock_irqsave(&phba->hbalock, iflags); 3652 if (phba->hba_flag & FCF_TS_INPROG) { 3653 spin_unlock_irqrestore(&phba->hbalock, iflags); 3654 return; 3655 } 3656 /* This is the initial FCF discovery scan */ 3657 phba->fcf.fcf_flag |= FCF_INIT_DISC; 3658 spin_unlock_irqrestore(&phba->hbalock, iflags); 3659 lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY, 3660 "2778 Start FCF table scan at linkup\n"); 3661 rc = lpfc_sli4_fcf_scan_read_fcf_rec(phba, 3662 LPFC_FCOE_FCF_GET_FIRST); 3663 if (rc) { 3664 spin_lock_irqsave(&phba->hbalock, iflags); 3665 phba->fcf.fcf_flag &= ~FCF_INIT_DISC; 3666 spin_unlock_irqrestore(&phba->hbalock, iflags); 3667 goto out; 3668 } 3669 /* Reset FCF roundrobin bmask for new discovery */ 3670 lpfc_sli4_clear_fcf_rr_bmask(phba); 3671 } 3672 3673 /* Prepare for LINK up registrations */ 3674 memset(phba->os_host_name, 0, sizeof(phba->os_host_name)); 3675 scnprintf(phba->os_host_name, sizeof(phba->os_host_name), "%s", 3676 init_utsname()->nodename); 3677 return; 3678 out: 3679 lpfc_vport_set_state(vport, FC_VPORT_FAILED); 3680 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 3681 "0263 Discovery Mailbox error: state: 0x%x : x%px x%px\n", 3682 vport->port_state, sparam_mbox, cfglink_mbox); 3683 lpfc_issue_clear_la(phba, vport); 3684 return; 3685 } 3686 3687 static void 3688 lpfc_enable_la(struct lpfc_hba *phba) 3689 { 3690 uint32_t control; 3691 struct lpfc_sli *psli = &phba->sli; 3692 spin_lock_irq(&phba->hbalock); 3693 psli->sli_flag |= LPFC_PROCESS_LA; 3694 if (phba->sli_rev <= LPFC_SLI_REV3) { 3695 control = readl(phba->HCregaddr); 3696 control |= HC_LAINT_ENA; 3697 writel(control, phba->HCregaddr); 3698 readl(phba->HCregaddr); /* flush */ 3699 } 3700 spin_unlock_irq(&phba->hbalock); 3701 } 3702 3703 static void 3704 lpfc_mbx_issue_link_down(struct lpfc_hba *phba) 3705 { 3706 lpfc_linkdown(phba); 3707 lpfc_enable_la(phba); 3708 lpfc_unregister_unused_fcf(phba); 3709 /* turn on Link Attention interrupts - no CLEAR_LA needed */ 3710 } 3711 3712 3713 /* 3714 * This routine handles processing a READ_TOPOLOGY mailbox 3715 * command upon completion. It is setup in the LPFC_MBOXQ 3716 * as the completion routine when the command is 3717 * handed off to the SLI layer. SLI4 only. 3718 */ 3719 void 3720 lpfc_mbx_cmpl_read_topology(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 3721 { 3722 struct lpfc_vport *vport = pmb->vport; 3723 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 3724 struct lpfc_mbx_read_top *la; 3725 struct lpfc_sli_ring *pring; 3726 MAILBOX_t *mb = &pmb->u.mb; 3727 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *)(pmb->ctx_buf); 3728 uint8_t attn_type; 3729 unsigned long iflags; 3730 3731 /* Unblock ELS traffic */ 3732 pring = lpfc_phba_elsring(phba); 3733 if (pring) 3734 pring->flag &= ~LPFC_STOP_IOCB_EVENT; 3735 3736 /* Check for error */ 3737 if (mb->mbxStatus) { 3738 lpfc_printf_log(phba, KERN_INFO, LOG_LINK_EVENT, 3739 "1307 READ_LA mbox error x%x state x%x\n", 3740 mb->mbxStatus, vport->port_state); 3741 lpfc_mbx_issue_link_down(phba); 3742 phba->link_state = LPFC_HBA_ERROR; 3743 goto lpfc_mbx_cmpl_read_topology_free_mbuf; 3744 } 3745 3746 la = (struct lpfc_mbx_read_top *) &pmb->u.mb.un.varReadTop; 3747 attn_type = bf_get(lpfc_mbx_read_top_att_type, la); 3748 3749 memcpy(&phba->alpa_map[0], mp->virt, 128); 3750 3751 spin_lock_irqsave(shost->host_lock, iflags); 3752 if (bf_get(lpfc_mbx_read_top_pb, la)) 3753 vport->fc_flag |= FC_BYPASSED_MODE; 3754 else 3755 vport->fc_flag &= ~FC_BYPASSED_MODE; 3756 spin_unlock_irqrestore(shost->host_lock, iflags); 3757 3758 if (phba->fc_eventTag <= la->eventTag) { 3759 phba->fc_stat.LinkMultiEvent++; 3760 if (attn_type == LPFC_ATT_LINK_UP) 3761 if (phba->fc_eventTag != 0) 3762 lpfc_linkdown(phba); 3763 } 3764 3765 phba->fc_eventTag = la->eventTag; 3766 if (phba->sli_rev < LPFC_SLI_REV4) { 3767 spin_lock_irqsave(&phba->hbalock, iflags); 3768 if (bf_get(lpfc_mbx_read_top_mm, la)) 3769 phba->sli.sli_flag |= LPFC_MENLO_MAINT; 3770 else 3771 phba->sli.sli_flag &= ~LPFC_MENLO_MAINT; 3772 spin_unlock_irqrestore(&phba->hbalock, iflags); 3773 } 3774 3775 phba->link_events++; 3776 if ((attn_type == LPFC_ATT_LINK_UP) && 3777 !(phba->sli.sli_flag & LPFC_MENLO_MAINT)) { 3778 phba->fc_stat.LinkUp++; 3779 if (phba->link_flag & LS_LOOPBACK_MODE) { 3780 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT, 3781 "1306 Link Up Event in loop back mode " 3782 "x%x received Data: x%x x%x x%x x%x\n", 3783 la->eventTag, phba->fc_eventTag, 3784 bf_get(lpfc_mbx_read_top_alpa_granted, 3785 la), 3786 bf_get(lpfc_mbx_read_top_link_spd, la), 3787 phba->alpa_map[0]); 3788 } else { 3789 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT, 3790 "1303 Link Up Event x%x received " 3791 "Data: x%x x%x x%x x%x x%x x%x %d\n", 3792 la->eventTag, phba->fc_eventTag, 3793 bf_get(lpfc_mbx_read_top_alpa_granted, 3794 la), 3795 bf_get(lpfc_mbx_read_top_link_spd, la), 3796 phba->alpa_map[0], 3797 bf_get(lpfc_mbx_read_top_mm, la), 3798 bf_get(lpfc_mbx_read_top_fa, la), 3799 phba->wait_4_mlo_maint_flg); 3800 } 3801 lpfc_mbx_process_link_up(phba, la); 3802 3803 if (phba->cmf_active_mode != LPFC_CFG_OFF) 3804 lpfc_cmf_signal_init(phba); 3805 3806 } else if (attn_type == LPFC_ATT_LINK_DOWN || 3807 attn_type == LPFC_ATT_UNEXP_WWPN) { 3808 phba->fc_stat.LinkDown++; 3809 if (phba->link_flag & LS_LOOPBACK_MODE) 3810 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT, 3811 "1308 Link Down Event in loop back mode " 3812 "x%x received " 3813 "Data: x%x x%x x%x\n", 3814 la->eventTag, phba->fc_eventTag, 3815 phba->pport->port_state, vport->fc_flag); 3816 else if (attn_type == LPFC_ATT_UNEXP_WWPN) 3817 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT, 3818 "1313 Link Down Unexpected FA WWPN Event x%x " 3819 "received Data: x%x x%x x%x x%x x%x\n", 3820 la->eventTag, phba->fc_eventTag, 3821 phba->pport->port_state, vport->fc_flag, 3822 bf_get(lpfc_mbx_read_top_mm, la), 3823 bf_get(lpfc_mbx_read_top_fa, la)); 3824 else 3825 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT, 3826 "1305 Link Down Event x%x received " 3827 "Data: x%x x%x x%x x%x x%x\n", 3828 la->eventTag, phba->fc_eventTag, 3829 phba->pport->port_state, vport->fc_flag, 3830 bf_get(lpfc_mbx_read_top_mm, la), 3831 bf_get(lpfc_mbx_read_top_fa, la)); 3832 lpfc_mbx_issue_link_down(phba); 3833 } 3834 if (phba->sli.sli_flag & LPFC_MENLO_MAINT && 3835 attn_type == LPFC_ATT_LINK_UP) { 3836 if (phba->link_state != LPFC_LINK_DOWN) { 3837 phba->fc_stat.LinkDown++; 3838 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT, 3839 "1312 Link Down Event x%x received " 3840 "Data: x%x x%x x%x\n", 3841 la->eventTag, phba->fc_eventTag, 3842 phba->pport->port_state, vport->fc_flag); 3843 lpfc_mbx_issue_link_down(phba); 3844 } else 3845 lpfc_enable_la(phba); 3846 3847 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT, 3848 "1310 Menlo Maint Mode Link up Event x%x rcvd " 3849 "Data: x%x x%x x%x\n", 3850 la->eventTag, phba->fc_eventTag, 3851 phba->pport->port_state, vport->fc_flag); 3852 /* 3853 * The cmnd that triggered this will be waiting for this 3854 * signal. 3855 */ 3856 /* WAKEUP for MENLO_SET_MODE or MENLO_RESET command. */ 3857 if (phba->wait_4_mlo_maint_flg) { 3858 phba->wait_4_mlo_maint_flg = 0; 3859 wake_up_interruptible(&phba->wait_4_mlo_m_q); 3860 } 3861 } 3862 3863 if ((phba->sli_rev < LPFC_SLI_REV4) && 3864 bf_get(lpfc_mbx_read_top_fa, la)) { 3865 if (phba->sli.sli_flag & LPFC_MENLO_MAINT) 3866 lpfc_issue_clear_la(phba, vport); 3867 lpfc_printf_log(phba, KERN_INFO, LOG_LINK_EVENT, 3868 "1311 fa %d\n", 3869 bf_get(lpfc_mbx_read_top_fa, la)); 3870 } 3871 3872 lpfc_mbx_cmpl_read_topology_free_mbuf: 3873 lpfc_mbox_rsrc_cleanup(phba, pmb, MBOX_THD_UNLOCKED); 3874 } 3875 3876 /* 3877 * This routine handles processing a REG_LOGIN mailbox 3878 * command upon completion. It is setup in the LPFC_MBOXQ 3879 * as the completion routine when the command is 3880 * handed off to the SLI layer. 3881 */ 3882 void 3883 lpfc_mbx_cmpl_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 3884 { 3885 struct lpfc_vport *vport = pmb->vport; 3886 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *)pmb->ctx_buf; 3887 struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *)pmb->ctx_ndlp; 3888 3889 /* The driver calls the state machine with the pmb pointer 3890 * but wants to make sure a stale ctx_buf isn't acted on. 3891 * The ctx_buf is restored later and cleaned up. 3892 */ 3893 pmb->ctx_buf = NULL; 3894 pmb->ctx_ndlp = NULL; 3895 3896 lpfc_printf_vlog(vport, KERN_INFO, LOG_SLI | LOG_NODE | LOG_DISCOVERY, 3897 "0002 rpi:%x DID:%x flg:%x %d x%px\n", 3898 ndlp->nlp_rpi, ndlp->nlp_DID, ndlp->nlp_flag, 3899 kref_read(&ndlp->kref), 3900 ndlp); 3901 if (ndlp->nlp_flag & NLP_REG_LOGIN_SEND) 3902 ndlp->nlp_flag &= ~NLP_REG_LOGIN_SEND; 3903 3904 if (ndlp->nlp_flag & NLP_IGNR_REG_CMPL || 3905 ndlp->nlp_state != NLP_STE_REG_LOGIN_ISSUE) { 3906 /* We rcvd a rscn after issuing this 3907 * mbox reg login, we may have cycled 3908 * back through the state and be 3909 * back at reg login state so this 3910 * mbox needs to be ignored becase 3911 * there is another reg login in 3912 * process. 3913 */ 3914 spin_lock_irq(&ndlp->lock); 3915 ndlp->nlp_flag &= ~NLP_IGNR_REG_CMPL; 3916 spin_unlock_irq(&ndlp->lock); 3917 3918 /* 3919 * We cannot leave the RPI registered because 3920 * if we go thru discovery again for this ndlp 3921 * a subsequent REG_RPI will fail. 3922 */ 3923 ndlp->nlp_flag |= NLP_RPI_REGISTERED; 3924 lpfc_unreg_rpi(vport, ndlp); 3925 } 3926 3927 /* Call state machine */ 3928 lpfc_disc_state_machine(vport, ndlp, pmb, NLP_EVT_CMPL_REG_LOGIN); 3929 pmb->ctx_buf = mp; 3930 lpfc_mbox_rsrc_cleanup(phba, pmb, MBOX_THD_UNLOCKED); 3931 3932 /* decrement the node reference count held for this callback 3933 * function. 3934 */ 3935 lpfc_nlp_put(ndlp); 3936 3937 return; 3938 } 3939 3940 static void 3941 lpfc_mbx_cmpl_unreg_vpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 3942 { 3943 MAILBOX_t *mb = &pmb->u.mb; 3944 struct lpfc_vport *vport = pmb->vport; 3945 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 3946 3947 switch (mb->mbxStatus) { 3948 case 0x0011: 3949 case 0x0020: 3950 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE, 3951 "0911 cmpl_unreg_vpi, mb status = 0x%x\n", 3952 mb->mbxStatus); 3953 break; 3954 /* If VPI is busy, reset the HBA */ 3955 case 0x9700: 3956 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 3957 "2798 Unreg_vpi failed vpi 0x%x, mb status = 0x%x\n", 3958 vport->vpi, mb->mbxStatus); 3959 if (!(phba->pport->load_flag & FC_UNLOADING)) 3960 lpfc_workq_post_event(phba, NULL, NULL, 3961 LPFC_EVT_RESET_HBA); 3962 } 3963 spin_lock_irq(shost->host_lock); 3964 vport->vpi_state &= ~LPFC_VPI_REGISTERED; 3965 vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI; 3966 spin_unlock_irq(shost->host_lock); 3967 mempool_free(pmb, phba->mbox_mem_pool); 3968 lpfc_cleanup_vports_rrqs(vport, NULL); 3969 /* 3970 * This shost reference might have been taken at the beginning of 3971 * lpfc_vport_delete() 3972 */ 3973 if ((vport->load_flag & FC_UNLOADING) && (vport != phba->pport)) 3974 scsi_host_put(shost); 3975 } 3976 3977 int 3978 lpfc_mbx_unreg_vpi(struct lpfc_vport *vport) 3979 { 3980 struct lpfc_hba *phba = vport->phba; 3981 LPFC_MBOXQ_t *mbox; 3982 int rc; 3983 3984 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 3985 if (!mbox) 3986 return 1; 3987 3988 lpfc_unreg_vpi(phba, vport->vpi, mbox); 3989 mbox->vport = vport; 3990 mbox->mbox_cmpl = lpfc_mbx_cmpl_unreg_vpi; 3991 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT); 3992 if (rc == MBX_NOT_FINISHED) { 3993 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 3994 "1800 Could not issue unreg_vpi\n"); 3995 mempool_free(mbox, phba->mbox_mem_pool); 3996 return rc; 3997 } 3998 return 0; 3999 } 4000 4001 static void 4002 lpfc_mbx_cmpl_reg_vpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 4003 { 4004 struct lpfc_vport *vport = pmb->vport; 4005 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 4006 MAILBOX_t *mb = &pmb->u.mb; 4007 4008 switch (mb->mbxStatus) { 4009 case 0x0011: 4010 case 0x9601: 4011 case 0x9602: 4012 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE, 4013 "0912 cmpl_reg_vpi, mb status = 0x%x\n", 4014 mb->mbxStatus); 4015 lpfc_vport_set_state(vport, FC_VPORT_FAILED); 4016 spin_lock_irq(shost->host_lock); 4017 vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP); 4018 spin_unlock_irq(shost->host_lock); 4019 vport->fc_myDID = 0; 4020 4021 if ((vport->cfg_enable_fc4_type == LPFC_ENABLE_BOTH) || 4022 (vport->cfg_enable_fc4_type == LPFC_ENABLE_NVME)) { 4023 if (phba->nvmet_support) 4024 lpfc_nvmet_update_targetport(phba); 4025 else 4026 lpfc_nvme_update_localport(vport); 4027 } 4028 goto out; 4029 } 4030 4031 spin_lock_irq(shost->host_lock); 4032 vport->vpi_state |= LPFC_VPI_REGISTERED; 4033 vport->fc_flag &= ~FC_VPORT_NEEDS_REG_VPI; 4034 spin_unlock_irq(shost->host_lock); 4035 vport->num_disc_nodes = 0; 4036 /* go thru NPR list and issue ELS PLOGIs */ 4037 if (vport->fc_npr_cnt) 4038 lpfc_els_disc_plogi(vport); 4039 4040 if (!vport->num_disc_nodes) { 4041 spin_lock_irq(shost->host_lock); 4042 vport->fc_flag &= ~FC_NDISC_ACTIVE; 4043 spin_unlock_irq(shost->host_lock); 4044 lpfc_can_disctmo(vport); 4045 } 4046 vport->port_state = LPFC_VPORT_READY; 4047 4048 out: 4049 mempool_free(pmb, phba->mbox_mem_pool); 4050 return; 4051 } 4052 4053 /** 4054 * lpfc_create_static_vport - Read HBA config region to create static vports. 4055 * @phba: pointer to lpfc hba data structure. 4056 * 4057 * This routine issue a DUMP mailbox command for config region 22 to get 4058 * the list of static vports to be created. The function create vports 4059 * based on the information returned from the HBA. 4060 **/ 4061 void 4062 lpfc_create_static_vport(struct lpfc_hba *phba) 4063 { 4064 LPFC_MBOXQ_t *pmb = NULL; 4065 MAILBOX_t *mb; 4066 struct static_vport_info *vport_info; 4067 int mbx_wait_rc = 0, i; 4068 struct fc_vport_identifiers vport_id; 4069 struct fc_vport *new_fc_vport; 4070 struct Scsi_Host *shost; 4071 struct lpfc_vport *vport; 4072 uint16_t offset = 0; 4073 uint8_t *vport_buff; 4074 struct lpfc_dmabuf *mp; 4075 uint32_t byte_count = 0; 4076 4077 pmb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 4078 if (!pmb) { 4079 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 4080 "0542 lpfc_create_static_vport failed to" 4081 " allocate mailbox memory\n"); 4082 return; 4083 } 4084 memset(pmb, 0, sizeof(LPFC_MBOXQ_t)); 4085 mb = &pmb->u.mb; 4086 4087 vport_info = kzalloc(sizeof(struct static_vport_info), GFP_KERNEL); 4088 if (!vport_info) { 4089 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 4090 "0543 lpfc_create_static_vport failed to" 4091 " allocate vport_info\n"); 4092 mempool_free(pmb, phba->mbox_mem_pool); 4093 return; 4094 } 4095 4096 vport_buff = (uint8_t *) vport_info; 4097 do { 4098 /* While loop iteration forces a free dma buffer from 4099 * the previous loop because the mbox is reused and 4100 * the dump routine is a single-use construct. 4101 */ 4102 if (pmb->ctx_buf) { 4103 mp = (struct lpfc_dmabuf *)pmb->ctx_buf; 4104 lpfc_mbuf_free(phba, mp->virt, mp->phys); 4105 kfree(mp); 4106 pmb->ctx_buf = NULL; 4107 } 4108 if (lpfc_dump_static_vport(phba, pmb, offset)) 4109 goto out; 4110 4111 pmb->vport = phba->pport; 4112 mbx_wait_rc = lpfc_sli_issue_mbox_wait(phba, pmb, 4113 LPFC_MBOX_TMO); 4114 4115 if ((mbx_wait_rc != MBX_SUCCESS) || mb->mbxStatus) { 4116 lpfc_printf_log(phba, KERN_WARNING, LOG_INIT, 4117 "0544 lpfc_create_static_vport failed to" 4118 " issue dump mailbox command ret 0x%x " 4119 "status 0x%x\n", 4120 mbx_wait_rc, mb->mbxStatus); 4121 goto out; 4122 } 4123 4124 if (phba->sli_rev == LPFC_SLI_REV4) { 4125 byte_count = pmb->u.mqe.un.mb_words[5]; 4126 mp = (struct lpfc_dmabuf *)pmb->ctx_buf; 4127 if (byte_count > sizeof(struct static_vport_info) - 4128 offset) 4129 byte_count = sizeof(struct static_vport_info) 4130 - offset; 4131 memcpy(vport_buff + offset, mp->virt, byte_count); 4132 offset += byte_count; 4133 } else { 4134 if (mb->un.varDmp.word_cnt > 4135 sizeof(struct static_vport_info) - offset) 4136 mb->un.varDmp.word_cnt = 4137 sizeof(struct static_vport_info) 4138 - offset; 4139 byte_count = mb->un.varDmp.word_cnt; 4140 lpfc_sli_pcimem_bcopy(((uint8_t *)mb) + DMP_RSP_OFFSET, 4141 vport_buff + offset, 4142 byte_count); 4143 4144 offset += byte_count; 4145 } 4146 4147 } while (byte_count && 4148 offset < sizeof(struct static_vport_info)); 4149 4150 4151 if ((le32_to_cpu(vport_info->signature) != VPORT_INFO_SIG) || 4152 ((le32_to_cpu(vport_info->rev) & VPORT_INFO_REV_MASK) 4153 != VPORT_INFO_REV)) { 4154 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 4155 "0545 lpfc_create_static_vport bad" 4156 " information header 0x%x 0x%x\n", 4157 le32_to_cpu(vport_info->signature), 4158 le32_to_cpu(vport_info->rev) & 4159 VPORT_INFO_REV_MASK); 4160 4161 goto out; 4162 } 4163 4164 shost = lpfc_shost_from_vport(phba->pport); 4165 4166 for (i = 0; i < MAX_STATIC_VPORT_COUNT; i++) { 4167 memset(&vport_id, 0, sizeof(vport_id)); 4168 vport_id.port_name = wwn_to_u64(vport_info->vport_list[i].wwpn); 4169 vport_id.node_name = wwn_to_u64(vport_info->vport_list[i].wwnn); 4170 if (!vport_id.port_name || !vport_id.node_name) 4171 continue; 4172 4173 vport_id.roles = FC_PORT_ROLE_FCP_INITIATOR; 4174 vport_id.vport_type = FC_PORTTYPE_NPIV; 4175 vport_id.disable = false; 4176 new_fc_vport = fc_vport_create(shost, 0, &vport_id); 4177 4178 if (!new_fc_vport) { 4179 lpfc_printf_log(phba, KERN_WARNING, LOG_INIT, 4180 "0546 lpfc_create_static_vport failed to" 4181 " create vport\n"); 4182 continue; 4183 } 4184 4185 vport = *(struct lpfc_vport **)new_fc_vport->dd_data; 4186 vport->vport_flag |= STATIC_VPORT; 4187 } 4188 4189 out: 4190 kfree(vport_info); 4191 if (mbx_wait_rc != MBX_TIMEOUT) 4192 lpfc_mbox_rsrc_cleanup(phba, pmb, MBOX_THD_UNLOCKED); 4193 } 4194 4195 /* 4196 * This routine handles processing a Fabric REG_LOGIN mailbox 4197 * command upon completion. It is setup in the LPFC_MBOXQ 4198 * as the completion routine when the command is 4199 * handed off to the SLI layer. 4200 */ 4201 void 4202 lpfc_mbx_cmpl_fabric_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 4203 { 4204 struct lpfc_vport *vport = pmb->vport; 4205 MAILBOX_t *mb = &pmb->u.mb; 4206 struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *)pmb->ctx_ndlp; 4207 struct Scsi_Host *shost; 4208 4209 pmb->ctx_ndlp = NULL; 4210 4211 if (mb->mbxStatus) { 4212 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 4213 "0258 Register Fabric login error: 0x%x\n", 4214 mb->mbxStatus); 4215 lpfc_mbox_rsrc_cleanup(phba, pmb, MBOX_THD_UNLOCKED); 4216 if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) { 4217 /* FLOGI failed, use loop map to make discovery list */ 4218 lpfc_disc_list_loopmap(vport); 4219 4220 /* Start discovery */ 4221 lpfc_disc_start(vport); 4222 /* Decrement the reference count to ndlp after the 4223 * reference to the ndlp are done. 4224 */ 4225 lpfc_nlp_put(ndlp); 4226 return; 4227 } 4228 4229 lpfc_vport_set_state(vport, FC_VPORT_FAILED); 4230 /* Decrement the reference count to ndlp after the reference 4231 * to the ndlp are done. 4232 */ 4233 lpfc_nlp_put(ndlp); 4234 return; 4235 } 4236 4237 if (phba->sli_rev < LPFC_SLI_REV4) 4238 ndlp->nlp_rpi = mb->un.varWords[0]; 4239 ndlp->nlp_flag |= NLP_RPI_REGISTERED; 4240 ndlp->nlp_type |= NLP_FABRIC; 4241 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE); 4242 4243 if (vport->port_state == LPFC_FABRIC_CFG_LINK) { 4244 /* when physical port receive logo donot start 4245 * vport discovery */ 4246 if (!(vport->fc_flag & FC_LOGO_RCVD_DID_CHNG)) 4247 lpfc_start_fdiscs(phba); 4248 else { 4249 shost = lpfc_shost_from_vport(vport); 4250 spin_lock_irq(shost->host_lock); 4251 vport->fc_flag &= ~FC_LOGO_RCVD_DID_CHNG ; 4252 spin_unlock_irq(shost->host_lock); 4253 } 4254 lpfc_do_scr_ns_plogi(phba, vport); 4255 } 4256 4257 lpfc_mbox_rsrc_cleanup(phba, pmb, MBOX_THD_UNLOCKED); 4258 4259 /* Drop the reference count from the mbox at the end after 4260 * all the current reference to the ndlp have been done. 4261 */ 4262 lpfc_nlp_put(ndlp); 4263 return; 4264 } 4265 4266 /* 4267 * This routine will issue a GID_FT for each FC4 Type supported 4268 * by the driver. ALL GID_FTs must complete before discovery is started. 4269 */ 4270 int 4271 lpfc_issue_gidft(struct lpfc_vport *vport) 4272 { 4273 /* Good status, issue CT Request to NameServer */ 4274 if ((vport->cfg_enable_fc4_type == LPFC_ENABLE_BOTH) || 4275 (vport->cfg_enable_fc4_type == LPFC_ENABLE_FCP)) { 4276 if (lpfc_ns_cmd(vport, SLI_CTNS_GID_FT, 0, SLI_CTPT_FCP)) { 4277 /* Cannot issue NameServer FCP Query, so finish up 4278 * discovery 4279 */ 4280 lpfc_printf_vlog(vport, KERN_ERR, 4281 LOG_TRACE_EVENT, 4282 "0604 %s FC TYPE %x %s\n", 4283 "Failed to issue GID_FT to ", 4284 FC_TYPE_FCP, 4285 "Finishing discovery."); 4286 return 0; 4287 } 4288 vport->gidft_inp++; 4289 } 4290 4291 if ((vport->cfg_enable_fc4_type == LPFC_ENABLE_BOTH) || 4292 (vport->cfg_enable_fc4_type == LPFC_ENABLE_NVME)) { 4293 if (lpfc_ns_cmd(vport, SLI_CTNS_GID_FT, 0, SLI_CTPT_NVME)) { 4294 /* Cannot issue NameServer NVME Query, so finish up 4295 * discovery 4296 */ 4297 lpfc_printf_vlog(vport, KERN_ERR, 4298 LOG_TRACE_EVENT, 4299 "0605 %s FC_TYPE %x %s %d\n", 4300 "Failed to issue GID_FT to ", 4301 FC_TYPE_NVME, 4302 "Finishing discovery: gidftinp ", 4303 vport->gidft_inp); 4304 if (vport->gidft_inp == 0) 4305 return 0; 4306 } else 4307 vport->gidft_inp++; 4308 } 4309 return vport->gidft_inp; 4310 } 4311 4312 /** 4313 * lpfc_issue_gidpt - issue a GID_PT for all N_Ports 4314 * @vport: The virtual port for which this call is being executed. 4315 * 4316 * This routine will issue a GID_PT to get a list of all N_Ports 4317 * 4318 * Return value : 4319 * 0 - Failure to issue a GID_PT 4320 * 1 - GID_PT issued 4321 **/ 4322 int 4323 lpfc_issue_gidpt(struct lpfc_vport *vport) 4324 { 4325 /* Good status, issue CT Request to NameServer */ 4326 if (lpfc_ns_cmd(vport, SLI_CTNS_GID_PT, 0, GID_PT_N_PORT)) { 4327 /* Cannot issue NameServer FCP Query, so finish up 4328 * discovery 4329 */ 4330 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 4331 "0606 %s Port TYPE %x %s\n", 4332 "Failed to issue GID_PT to ", 4333 GID_PT_N_PORT, 4334 "Finishing discovery."); 4335 return 0; 4336 } 4337 vport->gidft_inp++; 4338 return 1; 4339 } 4340 4341 /* 4342 * This routine handles processing a NameServer REG_LOGIN mailbox 4343 * command upon completion. It is setup in the LPFC_MBOXQ 4344 * as the completion routine when the command is 4345 * handed off to the SLI layer. 4346 */ 4347 void 4348 lpfc_mbx_cmpl_ns_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 4349 { 4350 MAILBOX_t *mb = &pmb->u.mb; 4351 struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *)pmb->ctx_ndlp; 4352 struct lpfc_vport *vport = pmb->vport; 4353 int rc; 4354 4355 pmb->ctx_ndlp = NULL; 4356 vport->gidft_inp = 0; 4357 4358 if (mb->mbxStatus) { 4359 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 4360 "0260 Register NameServer error: 0x%x\n", 4361 mb->mbxStatus); 4362 4363 out: 4364 /* decrement the node reference count held for this 4365 * callback function. 4366 */ 4367 lpfc_nlp_put(ndlp); 4368 lpfc_mbox_rsrc_cleanup(phba, pmb, MBOX_THD_UNLOCKED); 4369 4370 /* If the node is not registered with the scsi or nvme 4371 * transport, remove the fabric node. The failed reg_login 4372 * is terminal. 4373 */ 4374 if (!(ndlp->fc4_xpt_flags & (SCSI_XPT_REGD | NVME_XPT_REGD))) { 4375 spin_lock_irq(&ndlp->lock); 4376 ndlp->nlp_flag &= ~NLP_NPR_2B_DISC; 4377 spin_unlock_irq(&ndlp->lock); 4378 lpfc_nlp_not_used(ndlp); 4379 } 4380 4381 if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) { 4382 /* 4383 * RegLogin failed, use loop map to make discovery 4384 * list 4385 */ 4386 lpfc_disc_list_loopmap(vport); 4387 4388 /* Start discovery */ 4389 lpfc_disc_start(vport); 4390 return; 4391 } 4392 lpfc_vport_set_state(vport, FC_VPORT_FAILED); 4393 return; 4394 } 4395 4396 if (phba->sli_rev < LPFC_SLI_REV4) 4397 ndlp->nlp_rpi = mb->un.varWords[0]; 4398 ndlp->nlp_flag |= NLP_RPI_REGISTERED; 4399 ndlp->nlp_type |= NLP_FABRIC; 4400 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE); 4401 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE | LOG_DISCOVERY, 4402 "0003 rpi:%x DID:%x flg:%x %d x%px\n", 4403 ndlp->nlp_rpi, ndlp->nlp_DID, ndlp->nlp_flag, 4404 kref_read(&ndlp->kref), 4405 ndlp); 4406 4407 if (vport->port_state < LPFC_VPORT_READY) { 4408 /* Link up discovery requires Fabric registration. */ 4409 lpfc_ns_cmd(vport, SLI_CTNS_RNN_ID, 0, 0); 4410 lpfc_ns_cmd(vport, SLI_CTNS_RSNN_NN, 0, 0); 4411 lpfc_ns_cmd(vport, SLI_CTNS_RSPN_ID, 0, 0); 4412 lpfc_ns_cmd(vport, SLI_CTNS_RFT_ID, 0, 0); 4413 4414 if ((vport->cfg_enable_fc4_type == LPFC_ENABLE_BOTH) || 4415 (vport->cfg_enable_fc4_type == LPFC_ENABLE_FCP)) 4416 lpfc_ns_cmd(vport, SLI_CTNS_RFF_ID, 0, FC_TYPE_FCP); 4417 4418 if ((vport->cfg_enable_fc4_type == LPFC_ENABLE_BOTH) || 4419 (vport->cfg_enable_fc4_type == LPFC_ENABLE_NVME)) 4420 lpfc_ns_cmd(vport, SLI_CTNS_RFF_ID, 0, 4421 FC_TYPE_NVME); 4422 4423 /* Issue SCR just before NameServer GID_FT Query */ 4424 lpfc_issue_els_scr(vport, 0); 4425 4426 /* Link was bounced or a Fabric LOGO occurred. Start EDC 4427 * with initial FW values provided the congestion mode is 4428 * not off. Note that signals may or may not be supported 4429 * by the adapter but FPIN is provided by default for 1 4430 * or both missing signals support. 4431 */ 4432 if (phba->cmf_active_mode != LPFC_CFG_OFF) { 4433 phba->cgn_reg_fpin = phba->cgn_init_reg_fpin; 4434 phba->cgn_reg_signal = phba->cgn_init_reg_signal; 4435 rc = lpfc_issue_els_edc(vport, 0); 4436 lpfc_printf_log(phba, KERN_INFO, 4437 LOG_INIT | LOG_ELS | LOG_DISCOVERY, 4438 "4220 EDC issue error x%x, Data: x%x\n", 4439 rc, phba->cgn_init_reg_signal); 4440 } else { 4441 lpfc_issue_els_rdf(vport, 0); 4442 } 4443 } 4444 4445 vport->fc_ns_retry = 0; 4446 if (lpfc_issue_gidft(vport) == 0) 4447 goto out; 4448 4449 /* 4450 * At this point in time we may need to wait for multiple 4451 * SLI_CTNS_GID_FT CT commands to complete before we start discovery. 4452 * 4453 * decrement the node reference count held for this 4454 * callback function. 4455 */ 4456 lpfc_nlp_put(ndlp); 4457 lpfc_mbox_rsrc_cleanup(phba, pmb, MBOX_THD_UNLOCKED); 4458 return; 4459 } 4460 4461 /* 4462 * This routine handles processing a Fabric Controller REG_LOGIN mailbox 4463 * command upon completion. It is setup in the LPFC_MBOXQ 4464 * as the completion routine when the command is handed off to the SLI layer. 4465 */ 4466 void 4467 lpfc_mbx_cmpl_fc_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 4468 { 4469 struct lpfc_vport *vport = pmb->vport; 4470 MAILBOX_t *mb = &pmb->u.mb; 4471 struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *)pmb->ctx_ndlp; 4472 4473 pmb->ctx_ndlp = NULL; 4474 if (mb->mbxStatus) { 4475 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 4476 "0933 %s: Register FC login error: 0x%x\n", 4477 __func__, mb->mbxStatus); 4478 goto out; 4479 } 4480 4481 lpfc_check_nlp_post_devloss(vport, ndlp); 4482 4483 if (phba->sli_rev < LPFC_SLI_REV4) 4484 ndlp->nlp_rpi = mb->un.varWords[0]; 4485 4486 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE, 4487 "0934 %s: Complete FC x%x RegLogin rpi x%x ste x%x\n", 4488 __func__, ndlp->nlp_DID, ndlp->nlp_rpi, 4489 ndlp->nlp_state); 4490 4491 ndlp->nlp_flag |= NLP_RPI_REGISTERED; 4492 ndlp->nlp_flag &= ~NLP_REG_LOGIN_SEND; 4493 ndlp->nlp_type |= NLP_FABRIC; 4494 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE); 4495 4496 out: 4497 lpfc_mbox_rsrc_cleanup(phba, pmb, MBOX_THD_UNLOCKED); 4498 4499 /* Drop the reference count from the mbox at the end after 4500 * all the current reference to the ndlp have been done. 4501 */ 4502 lpfc_nlp_put(ndlp); 4503 } 4504 4505 static void 4506 lpfc_register_remote_port(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) 4507 { 4508 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 4509 struct fc_rport *rport; 4510 struct lpfc_rport_data *rdata; 4511 struct fc_rport_identifiers rport_ids; 4512 struct lpfc_hba *phba = vport->phba; 4513 unsigned long flags; 4514 4515 if (vport->cfg_enable_fc4_type == LPFC_ENABLE_NVME) 4516 return; 4517 4518 /* Remote port has reappeared. Re-register w/ FC transport */ 4519 rport_ids.node_name = wwn_to_u64(ndlp->nlp_nodename.u.wwn); 4520 rport_ids.port_name = wwn_to_u64(ndlp->nlp_portname.u.wwn); 4521 rport_ids.port_id = ndlp->nlp_DID; 4522 rport_ids.roles = FC_RPORT_ROLE_UNKNOWN; 4523 4524 4525 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT, 4526 "rport add: did:x%x flg:x%x type x%x", 4527 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type); 4528 4529 /* Don't add the remote port if unloading. */ 4530 if (vport->load_flag & FC_UNLOADING) 4531 return; 4532 4533 /* 4534 * Disassociate any older association between this ndlp and rport 4535 */ 4536 if (ndlp->rport) { 4537 rdata = ndlp->rport->dd_data; 4538 rdata->pnode = NULL; 4539 } 4540 4541 ndlp->rport = rport = fc_remote_port_add(shost, 0, &rport_ids); 4542 if (!rport) { 4543 dev_printk(KERN_WARNING, &phba->pcidev->dev, 4544 "Warning: fc_remote_port_add failed\n"); 4545 return; 4546 } 4547 4548 /* Successful port add. Complete initializing node data */ 4549 rport->maxframe_size = ndlp->nlp_maxframe; 4550 rport->supported_classes = ndlp->nlp_class_sup; 4551 rdata = rport->dd_data; 4552 rdata->pnode = lpfc_nlp_get(ndlp); 4553 if (!rdata->pnode) { 4554 dev_warn(&phba->pcidev->dev, 4555 "Warning - node ref failed. Unreg rport\n"); 4556 fc_remote_port_delete(rport); 4557 ndlp->rport = NULL; 4558 return; 4559 } 4560 4561 spin_lock_irqsave(&ndlp->lock, flags); 4562 ndlp->fc4_xpt_flags |= SCSI_XPT_REGD; 4563 spin_unlock_irqrestore(&ndlp->lock, flags); 4564 4565 if (ndlp->nlp_type & NLP_FCP_TARGET) 4566 rport_ids.roles |= FC_PORT_ROLE_FCP_TARGET; 4567 if (ndlp->nlp_type & NLP_FCP_INITIATOR) 4568 rport_ids.roles |= FC_PORT_ROLE_FCP_INITIATOR; 4569 if (ndlp->nlp_type & NLP_NVME_INITIATOR) 4570 rport_ids.roles |= FC_PORT_ROLE_NVME_INITIATOR; 4571 if (ndlp->nlp_type & NLP_NVME_TARGET) 4572 rport_ids.roles |= FC_PORT_ROLE_NVME_TARGET; 4573 if (ndlp->nlp_type & NLP_NVME_DISCOVERY) 4574 rport_ids.roles |= FC_PORT_ROLE_NVME_DISCOVERY; 4575 4576 if (rport_ids.roles != FC_RPORT_ROLE_UNKNOWN) 4577 fc_remote_port_rolechg(rport, rport_ids.roles); 4578 4579 lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_NODE, 4580 "3183 %s rport x%px DID x%x, role x%x refcnt %d\n", 4581 __func__, rport, rport->port_id, rport->roles, 4582 kref_read(&ndlp->kref)); 4583 4584 if ((rport->scsi_target_id != -1) && 4585 (rport->scsi_target_id < LPFC_MAX_TARGET)) { 4586 ndlp->nlp_sid = rport->scsi_target_id; 4587 } 4588 4589 return; 4590 } 4591 4592 static void 4593 lpfc_unregister_remote_port(struct lpfc_nodelist *ndlp) 4594 { 4595 struct fc_rport *rport = ndlp->rport; 4596 struct lpfc_vport *vport = ndlp->vport; 4597 4598 if (vport->cfg_enable_fc4_type == LPFC_ENABLE_NVME) 4599 return; 4600 4601 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT, 4602 "rport delete: did:x%x flg:x%x type x%x", 4603 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type); 4604 4605 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE, 4606 "3184 rport unregister x%06x, rport x%px " 4607 "xptflg x%x refcnt %d\n", 4608 ndlp->nlp_DID, rport, ndlp->fc4_xpt_flags, 4609 kref_read(&ndlp->kref)); 4610 4611 fc_remote_port_delete(rport); 4612 lpfc_nlp_put(ndlp); 4613 } 4614 4615 static void 4616 lpfc_nlp_counters(struct lpfc_vport *vport, int state, int count) 4617 { 4618 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 4619 unsigned long iflags; 4620 4621 spin_lock_irqsave(shost->host_lock, iflags); 4622 switch (state) { 4623 case NLP_STE_UNUSED_NODE: 4624 vport->fc_unused_cnt += count; 4625 break; 4626 case NLP_STE_PLOGI_ISSUE: 4627 vport->fc_plogi_cnt += count; 4628 break; 4629 case NLP_STE_ADISC_ISSUE: 4630 vport->fc_adisc_cnt += count; 4631 break; 4632 case NLP_STE_REG_LOGIN_ISSUE: 4633 vport->fc_reglogin_cnt += count; 4634 break; 4635 case NLP_STE_PRLI_ISSUE: 4636 vport->fc_prli_cnt += count; 4637 break; 4638 case NLP_STE_UNMAPPED_NODE: 4639 vport->fc_unmap_cnt += count; 4640 break; 4641 case NLP_STE_MAPPED_NODE: 4642 vport->fc_map_cnt += count; 4643 break; 4644 case NLP_STE_NPR_NODE: 4645 if (vport->fc_npr_cnt == 0 && count == -1) 4646 vport->fc_npr_cnt = 0; 4647 else 4648 vport->fc_npr_cnt += count; 4649 break; 4650 } 4651 spin_unlock_irqrestore(shost->host_lock, iflags); 4652 } 4653 4654 /* Register a node with backend if not already done */ 4655 void 4656 lpfc_nlp_reg_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) 4657 { 4658 unsigned long iflags; 4659 4660 lpfc_check_nlp_post_devloss(vport, ndlp); 4661 4662 spin_lock_irqsave(&ndlp->lock, iflags); 4663 if (ndlp->fc4_xpt_flags & NLP_XPT_REGD) { 4664 /* Already registered with backend, trigger rescan */ 4665 spin_unlock_irqrestore(&ndlp->lock, iflags); 4666 4667 if (ndlp->fc4_xpt_flags & NVME_XPT_REGD && 4668 ndlp->nlp_type & (NLP_NVME_TARGET | NLP_NVME_DISCOVERY)) { 4669 lpfc_nvme_rescan_port(vport, ndlp); 4670 } 4671 return; 4672 } 4673 4674 ndlp->fc4_xpt_flags |= NLP_XPT_REGD; 4675 spin_unlock_irqrestore(&ndlp->lock, iflags); 4676 4677 if (lpfc_valid_xpt_node(ndlp)) { 4678 vport->phba->nport_event_cnt++; 4679 /* 4680 * Tell the fc transport about the port, if we haven't 4681 * already. If we have, and it's a scsi entity, be 4682 */ 4683 lpfc_register_remote_port(vport, ndlp); 4684 } 4685 4686 /* We are done if we do not have any NVME remote node */ 4687 if (!(ndlp->nlp_fc4_type & NLP_FC4_NVME)) 4688 return; 4689 4690 /* Notify the NVME transport of this new rport. */ 4691 if (vport->phba->sli_rev >= LPFC_SLI_REV4 && 4692 ndlp->nlp_fc4_type & NLP_FC4_NVME) { 4693 if (vport->phba->nvmet_support == 0) { 4694 /* Register this rport with the transport. 4695 * Only NVME Target Rports are registered with 4696 * the transport. 4697 */ 4698 if (ndlp->nlp_type & NLP_NVME_TARGET) { 4699 vport->phba->nport_event_cnt++; 4700 lpfc_nvme_register_port(vport, ndlp); 4701 } 4702 } else { 4703 /* Just take an NDLP ref count since the 4704 * target does not register rports. 4705 */ 4706 lpfc_nlp_get(ndlp); 4707 } 4708 } 4709 } 4710 4711 /* Unregister a node with backend if not already done */ 4712 void 4713 lpfc_nlp_unreg_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) 4714 { 4715 unsigned long iflags; 4716 4717 spin_lock_irqsave(&ndlp->lock, iflags); 4718 if (!(ndlp->fc4_xpt_flags & NLP_XPT_REGD)) { 4719 spin_unlock_irqrestore(&ndlp->lock, iflags); 4720 lpfc_printf_vlog(vport, KERN_INFO, LOG_SLI, 4721 "0999 %s Not regd: ndlp x%px rport x%px DID " 4722 "x%x FLG x%x XPT x%x\n", 4723 __func__, ndlp, ndlp->rport, ndlp->nlp_DID, 4724 ndlp->nlp_flag, ndlp->fc4_xpt_flags); 4725 return; 4726 } 4727 4728 ndlp->fc4_xpt_flags &= ~NLP_XPT_REGD; 4729 spin_unlock_irqrestore(&ndlp->lock, iflags); 4730 4731 if (ndlp->rport && 4732 ndlp->fc4_xpt_flags & SCSI_XPT_REGD) { 4733 vport->phba->nport_event_cnt++; 4734 lpfc_unregister_remote_port(ndlp); 4735 } else if (!ndlp->rport) { 4736 lpfc_printf_vlog(vport, KERN_INFO, LOG_SLI, 4737 "1999 %s NDLP in devloss x%px DID x%x FLG x%x" 4738 " XPT x%x refcnt %d\n", 4739 __func__, ndlp, ndlp->nlp_DID, ndlp->nlp_flag, 4740 ndlp->fc4_xpt_flags, 4741 kref_read(&ndlp->kref)); 4742 } 4743 4744 if (ndlp->fc4_xpt_flags & NVME_XPT_REGD) { 4745 vport->phba->nport_event_cnt++; 4746 if (vport->phba->nvmet_support == 0) { 4747 /* Start devloss if target. */ 4748 if (ndlp->nlp_type & NLP_NVME_TARGET) 4749 lpfc_nvme_unregister_port(vport, ndlp); 4750 } else { 4751 /* NVMET has no upcall. */ 4752 lpfc_nlp_put(ndlp); 4753 } 4754 } 4755 4756 } 4757 4758 /* 4759 * Adisc state change handling 4760 */ 4761 static void 4762 lpfc_handle_adisc_state(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 4763 int new_state) 4764 { 4765 switch (new_state) { 4766 /* 4767 * Any state to ADISC_ISSUE 4768 * Do nothing, adisc cmpl handling will trigger state changes 4769 */ 4770 case NLP_STE_ADISC_ISSUE: 4771 break; 4772 4773 /* 4774 * ADISC_ISSUE to mapped states 4775 * Trigger a registration with backend, it will be nop if 4776 * already registered 4777 */ 4778 case NLP_STE_UNMAPPED_NODE: 4779 ndlp->nlp_type |= NLP_FC_NODE; 4780 fallthrough; 4781 case NLP_STE_MAPPED_NODE: 4782 ndlp->nlp_flag &= ~NLP_NODEV_REMOVE; 4783 lpfc_nlp_reg_node(vport, ndlp); 4784 break; 4785 4786 /* 4787 * ADISC_ISSUE to non-mapped states 4788 * We are moving from ADISC_ISSUE to a non-mapped state because 4789 * ADISC failed, we would have skipped unregistering with 4790 * backend, attempt it now 4791 */ 4792 case NLP_STE_NPR_NODE: 4793 ndlp->nlp_flag &= ~NLP_RCV_PLOGI; 4794 fallthrough; 4795 default: 4796 lpfc_nlp_unreg_node(vport, ndlp); 4797 break; 4798 } 4799 4800 } 4801 4802 static void 4803 lpfc_nlp_state_cleanup(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 4804 int old_state, int new_state) 4805 { 4806 /* Trap ADISC changes here */ 4807 if (new_state == NLP_STE_ADISC_ISSUE || 4808 old_state == NLP_STE_ADISC_ISSUE) { 4809 lpfc_handle_adisc_state(vport, ndlp, new_state); 4810 return; 4811 } 4812 4813 if (new_state == NLP_STE_UNMAPPED_NODE) { 4814 ndlp->nlp_flag &= ~NLP_NODEV_REMOVE; 4815 ndlp->nlp_type |= NLP_FC_NODE; 4816 } 4817 if (new_state == NLP_STE_MAPPED_NODE) 4818 ndlp->nlp_flag &= ~NLP_NODEV_REMOVE; 4819 if (new_state == NLP_STE_NPR_NODE) 4820 ndlp->nlp_flag &= ~NLP_RCV_PLOGI; 4821 4822 /* Reg/Unreg for FCP and NVME Transport interface */ 4823 if ((old_state == NLP_STE_MAPPED_NODE || 4824 old_state == NLP_STE_UNMAPPED_NODE)) { 4825 /* For nodes marked for ADISC, Handle unreg in ADISC cmpl 4826 * if linkup. In linkdown do unreg_node 4827 */ 4828 if (!(ndlp->nlp_flag & NLP_NPR_ADISC) || 4829 !lpfc_is_link_up(vport->phba)) 4830 lpfc_nlp_unreg_node(vport, ndlp); 4831 } 4832 4833 if (new_state == NLP_STE_MAPPED_NODE || 4834 new_state == NLP_STE_UNMAPPED_NODE) 4835 lpfc_nlp_reg_node(vport, ndlp); 4836 4837 if ((new_state == NLP_STE_MAPPED_NODE) && 4838 (vport->stat_data_enabled)) { 4839 /* 4840 * A new target is discovered, if there is no buffer for 4841 * statistical data collection allocate buffer. 4842 */ 4843 ndlp->lat_data = kcalloc(LPFC_MAX_BUCKET_COUNT, 4844 sizeof(struct lpfc_scsicmd_bkt), 4845 GFP_KERNEL); 4846 4847 if (!ndlp->lat_data) 4848 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 4849 "0286 lpfc_nlp_state_cleanup failed to " 4850 "allocate statistical data buffer DID " 4851 "0x%x\n", ndlp->nlp_DID); 4852 } 4853 /* 4854 * If the node just added to Mapped list was an FCP target, 4855 * but the remote port registration failed or assigned a target 4856 * id outside the presentable range - move the node to the 4857 * Unmapped List. 4858 */ 4859 if ((new_state == NLP_STE_MAPPED_NODE) && 4860 (ndlp->nlp_type & NLP_FCP_TARGET) && 4861 (!ndlp->rport || 4862 ndlp->rport->scsi_target_id == -1 || 4863 ndlp->rport->scsi_target_id >= LPFC_MAX_TARGET)) { 4864 spin_lock_irq(&ndlp->lock); 4865 ndlp->nlp_flag |= NLP_TGT_NO_SCSIID; 4866 spin_unlock_irq(&ndlp->lock); 4867 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE); 4868 } 4869 } 4870 4871 static char * 4872 lpfc_nlp_state_name(char *buffer, size_t size, int state) 4873 { 4874 static char *states[] = { 4875 [NLP_STE_UNUSED_NODE] = "UNUSED", 4876 [NLP_STE_PLOGI_ISSUE] = "PLOGI", 4877 [NLP_STE_ADISC_ISSUE] = "ADISC", 4878 [NLP_STE_REG_LOGIN_ISSUE] = "REGLOGIN", 4879 [NLP_STE_PRLI_ISSUE] = "PRLI", 4880 [NLP_STE_LOGO_ISSUE] = "LOGO", 4881 [NLP_STE_UNMAPPED_NODE] = "UNMAPPED", 4882 [NLP_STE_MAPPED_NODE] = "MAPPED", 4883 [NLP_STE_NPR_NODE] = "NPR", 4884 }; 4885 4886 if (state < NLP_STE_MAX_STATE && states[state]) 4887 strlcpy(buffer, states[state], size); 4888 else 4889 snprintf(buffer, size, "unknown (%d)", state); 4890 return buffer; 4891 } 4892 4893 void 4894 lpfc_nlp_set_state(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 4895 int state) 4896 { 4897 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 4898 int old_state = ndlp->nlp_state; 4899 int node_dropped = ndlp->nlp_flag & NLP_DROPPED; 4900 char name1[16], name2[16]; 4901 4902 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE, 4903 "0904 NPort state transition x%06x, %s -> %s\n", 4904 ndlp->nlp_DID, 4905 lpfc_nlp_state_name(name1, sizeof(name1), old_state), 4906 lpfc_nlp_state_name(name2, sizeof(name2), state)); 4907 4908 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE, 4909 "node statechg did:x%x old:%d ste:%d", 4910 ndlp->nlp_DID, old_state, state); 4911 4912 if (node_dropped && old_state == NLP_STE_UNUSED_NODE && 4913 state != NLP_STE_UNUSED_NODE) { 4914 ndlp->nlp_flag &= ~NLP_DROPPED; 4915 lpfc_nlp_get(ndlp); 4916 } 4917 4918 if (old_state == NLP_STE_NPR_NODE && 4919 state != NLP_STE_NPR_NODE) 4920 lpfc_cancel_retry_delay_tmo(vport, ndlp); 4921 if (old_state == NLP_STE_UNMAPPED_NODE) { 4922 ndlp->nlp_flag &= ~NLP_TGT_NO_SCSIID; 4923 ndlp->nlp_type &= ~NLP_FC_NODE; 4924 } 4925 4926 if (list_empty(&ndlp->nlp_listp)) { 4927 spin_lock_irq(shost->host_lock); 4928 list_add_tail(&ndlp->nlp_listp, &vport->fc_nodes); 4929 spin_unlock_irq(shost->host_lock); 4930 } else if (old_state) 4931 lpfc_nlp_counters(vport, old_state, -1); 4932 4933 ndlp->nlp_state = state; 4934 lpfc_nlp_counters(vport, state, 1); 4935 lpfc_nlp_state_cleanup(vport, ndlp, old_state, state); 4936 } 4937 4938 void 4939 lpfc_enqueue_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) 4940 { 4941 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 4942 4943 if (list_empty(&ndlp->nlp_listp)) { 4944 spin_lock_irq(shost->host_lock); 4945 list_add_tail(&ndlp->nlp_listp, &vport->fc_nodes); 4946 spin_unlock_irq(shost->host_lock); 4947 } 4948 } 4949 4950 void 4951 lpfc_dequeue_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) 4952 { 4953 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 4954 4955 lpfc_cancel_retry_delay_tmo(vport, ndlp); 4956 if (ndlp->nlp_state && !list_empty(&ndlp->nlp_listp)) 4957 lpfc_nlp_counters(vport, ndlp->nlp_state, -1); 4958 spin_lock_irq(shost->host_lock); 4959 list_del_init(&ndlp->nlp_listp); 4960 spin_unlock_irq(shost->host_lock); 4961 lpfc_nlp_state_cleanup(vport, ndlp, ndlp->nlp_state, 4962 NLP_STE_UNUSED_NODE); 4963 } 4964 4965 /** 4966 * lpfc_initialize_node - Initialize all fields of node object 4967 * @vport: Pointer to Virtual Port object. 4968 * @ndlp: Pointer to FC node object. 4969 * @did: FC_ID of the node. 4970 * 4971 * This function is always called when node object need to be initialized. 4972 * It initializes all the fields of the node object. Although the reference 4973 * to phba from @ndlp can be obtained indirectly through it's reference to 4974 * @vport, a direct reference to phba is taken here by @ndlp. This is due 4975 * to the life-span of the @ndlp might go beyond the existence of @vport as 4976 * the final release of ndlp is determined by its reference count. And, the 4977 * operation on @ndlp needs the reference to phba. 4978 **/ 4979 static inline void 4980 lpfc_initialize_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 4981 uint32_t did) 4982 { 4983 INIT_LIST_HEAD(&ndlp->els_retry_evt.evt_listp); 4984 INIT_LIST_HEAD(&ndlp->dev_loss_evt.evt_listp); 4985 timer_setup(&ndlp->nlp_delayfunc, lpfc_els_retry_delay, 0); 4986 INIT_LIST_HEAD(&ndlp->recovery_evt.evt_listp); 4987 4988 ndlp->nlp_DID = did; 4989 ndlp->vport = vport; 4990 ndlp->phba = vport->phba; 4991 ndlp->nlp_sid = NLP_NO_SID; 4992 ndlp->nlp_fc4_type = NLP_FC4_NONE; 4993 kref_init(&ndlp->kref); 4994 atomic_set(&ndlp->cmd_pending, 0); 4995 ndlp->cmd_qdepth = vport->cfg_tgt_queue_depth; 4996 ndlp->nlp_defer_did = NLP_EVT_NOTHING_PENDING; 4997 } 4998 4999 void 5000 lpfc_drop_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) 5001 { 5002 /* 5003 * Use of lpfc_drop_node and UNUSED list: lpfc_drop_node should 5004 * be used if we wish to issue the "last" lpfc_nlp_put() to remove 5005 * the ndlp from the vport. The ndlp marked as UNUSED on the list 5006 * until ALL other outstanding threads have completed. We check 5007 * that the ndlp not already in the UNUSED state before we proceed. 5008 */ 5009 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE) 5010 return; 5011 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNUSED_NODE); 5012 ndlp->nlp_flag |= NLP_DROPPED; 5013 if (vport->phba->sli_rev == LPFC_SLI_REV4) { 5014 lpfc_cleanup_vports_rrqs(vport, ndlp); 5015 lpfc_unreg_rpi(vport, ndlp); 5016 } 5017 5018 lpfc_nlp_put(ndlp); 5019 return; 5020 } 5021 5022 /* 5023 * Start / ReStart rescue timer for Discovery / RSCN handling 5024 */ 5025 void 5026 lpfc_set_disctmo(struct lpfc_vport *vport) 5027 { 5028 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 5029 struct lpfc_hba *phba = vport->phba; 5030 uint32_t tmo; 5031 5032 if (vport->port_state == LPFC_LOCAL_CFG_LINK) { 5033 /* For FAN, timeout should be greater than edtov */ 5034 tmo = (((phba->fc_edtov + 999) / 1000) + 1); 5035 } else { 5036 /* Normal discovery timeout should be > than ELS/CT timeout 5037 * FC spec states we need 3 * ratov for CT requests 5038 */ 5039 tmo = ((phba->fc_ratov * 3) + 3); 5040 } 5041 5042 5043 if (!timer_pending(&vport->fc_disctmo)) { 5044 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, 5045 "set disc timer: tmo:x%x state:x%x flg:x%x", 5046 tmo, vport->port_state, vport->fc_flag); 5047 } 5048 5049 mod_timer(&vport->fc_disctmo, jiffies + msecs_to_jiffies(1000 * tmo)); 5050 spin_lock_irq(shost->host_lock); 5051 vport->fc_flag |= FC_DISC_TMO; 5052 spin_unlock_irq(shost->host_lock); 5053 5054 /* Start Discovery Timer state <hba_state> */ 5055 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, 5056 "0247 Start Discovery Timer state x%x " 5057 "Data: x%x x%lx x%x x%x\n", 5058 vport->port_state, tmo, 5059 (unsigned long)&vport->fc_disctmo, vport->fc_plogi_cnt, 5060 vport->fc_adisc_cnt); 5061 5062 return; 5063 } 5064 5065 /* 5066 * Cancel rescue timer for Discovery / RSCN handling 5067 */ 5068 int 5069 lpfc_can_disctmo(struct lpfc_vport *vport) 5070 { 5071 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 5072 unsigned long iflags; 5073 5074 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, 5075 "can disc timer: state:x%x rtry:x%x flg:x%x", 5076 vport->port_state, vport->fc_ns_retry, vport->fc_flag); 5077 5078 /* Turn off discovery timer if its running */ 5079 if (vport->fc_flag & FC_DISC_TMO || 5080 timer_pending(&vport->fc_disctmo)) { 5081 spin_lock_irqsave(shost->host_lock, iflags); 5082 vport->fc_flag &= ~FC_DISC_TMO; 5083 spin_unlock_irqrestore(shost->host_lock, iflags); 5084 del_timer_sync(&vport->fc_disctmo); 5085 spin_lock_irqsave(&vport->work_port_lock, iflags); 5086 vport->work_port_events &= ~WORKER_DISC_TMO; 5087 spin_unlock_irqrestore(&vport->work_port_lock, iflags); 5088 } 5089 5090 /* Cancel Discovery Timer state <hba_state> */ 5091 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, 5092 "0248 Cancel Discovery Timer state x%x " 5093 "Data: x%x x%x x%x\n", 5094 vport->port_state, vport->fc_flag, 5095 vport->fc_plogi_cnt, vport->fc_adisc_cnt); 5096 return 0; 5097 } 5098 5099 /* 5100 * Check specified ring for outstanding IOCB on the SLI queue 5101 * Return true if iocb matches the specified nport 5102 */ 5103 int 5104 lpfc_check_sli_ndlp(struct lpfc_hba *phba, 5105 struct lpfc_sli_ring *pring, 5106 struct lpfc_iocbq *iocb, 5107 struct lpfc_nodelist *ndlp) 5108 { 5109 struct lpfc_vport *vport = ndlp->vport; 5110 u8 ulp_command; 5111 u16 ulp_context; 5112 u32 remote_id; 5113 5114 if (iocb->vport != vport) 5115 return 0; 5116 5117 ulp_command = get_job_cmnd(phba, iocb); 5118 ulp_context = get_job_ulpcontext(phba, iocb); 5119 remote_id = get_job_els_rsp64_did(phba, iocb); 5120 5121 if (pring->ringno == LPFC_ELS_RING) { 5122 switch (ulp_command) { 5123 case CMD_GEN_REQUEST64_CR: 5124 if (iocb->ndlp == ndlp) 5125 return 1; 5126 fallthrough; 5127 case CMD_ELS_REQUEST64_CR: 5128 if (remote_id == ndlp->nlp_DID) 5129 return 1; 5130 fallthrough; 5131 case CMD_XMIT_ELS_RSP64_CX: 5132 if (iocb->ndlp == ndlp) 5133 return 1; 5134 } 5135 } else if (pring->ringno == LPFC_FCP_RING) { 5136 /* Skip match check if waiting to relogin to FCP target */ 5137 if ((ndlp->nlp_type & NLP_FCP_TARGET) && 5138 (ndlp->nlp_flag & NLP_DELAY_TMO)) { 5139 return 0; 5140 } 5141 if (ulp_context == ndlp->nlp_rpi) 5142 return 1; 5143 } 5144 return 0; 5145 } 5146 5147 static void 5148 __lpfc_dequeue_nport_iocbs(struct lpfc_hba *phba, 5149 struct lpfc_nodelist *ndlp, struct lpfc_sli_ring *pring, 5150 struct list_head *dequeue_list) 5151 { 5152 struct lpfc_iocbq *iocb, *next_iocb; 5153 5154 list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) { 5155 /* Check to see if iocb matches the nport */ 5156 if (lpfc_check_sli_ndlp(phba, pring, iocb, ndlp)) 5157 /* match, dequeue */ 5158 list_move_tail(&iocb->list, dequeue_list); 5159 } 5160 } 5161 5162 static void 5163 lpfc_sli3_dequeue_nport_iocbs(struct lpfc_hba *phba, 5164 struct lpfc_nodelist *ndlp, struct list_head *dequeue_list) 5165 { 5166 struct lpfc_sli *psli = &phba->sli; 5167 uint32_t i; 5168 5169 spin_lock_irq(&phba->hbalock); 5170 for (i = 0; i < psli->num_rings; i++) 5171 __lpfc_dequeue_nport_iocbs(phba, ndlp, &psli->sli3_ring[i], 5172 dequeue_list); 5173 spin_unlock_irq(&phba->hbalock); 5174 } 5175 5176 static void 5177 lpfc_sli4_dequeue_nport_iocbs(struct lpfc_hba *phba, 5178 struct lpfc_nodelist *ndlp, struct list_head *dequeue_list) 5179 { 5180 struct lpfc_sli_ring *pring; 5181 struct lpfc_queue *qp = NULL; 5182 5183 spin_lock_irq(&phba->hbalock); 5184 list_for_each_entry(qp, &phba->sli4_hba.lpfc_wq_list, wq_list) { 5185 pring = qp->pring; 5186 if (!pring) 5187 continue; 5188 spin_lock(&pring->ring_lock); 5189 __lpfc_dequeue_nport_iocbs(phba, ndlp, pring, dequeue_list); 5190 spin_unlock(&pring->ring_lock); 5191 } 5192 spin_unlock_irq(&phba->hbalock); 5193 } 5194 5195 /* 5196 * Free resources / clean up outstanding I/Os 5197 * associated with nlp_rpi in the LPFC_NODELIST entry. 5198 */ 5199 static int 5200 lpfc_no_rpi(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp) 5201 { 5202 LIST_HEAD(completions); 5203 5204 lpfc_fabric_abort_nport(ndlp); 5205 5206 /* 5207 * Everything that matches on txcmplq will be returned 5208 * by firmware with a no rpi error. 5209 */ 5210 if (ndlp->nlp_flag & NLP_RPI_REGISTERED) { 5211 if (phba->sli_rev != LPFC_SLI_REV4) 5212 lpfc_sli3_dequeue_nport_iocbs(phba, ndlp, &completions); 5213 else 5214 lpfc_sli4_dequeue_nport_iocbs(phba, ndlp, &completions); 5215 } 5216 5217 /* Cancel all the IOCBs from the completions list */ 5218 lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT, 5219 IOERR_SLI_ABORTED); 5220 5221 return 0; 5222 } 5223 5224 /** 5225 * lpfc_nlp_logo_unreg - Unreg mailbox completion handler before LOGO 5226 * @phba: Pointer to HBA context object. 5227 * @pmb: Pointer to mailbox object. 5228 * 5229 * This function will issue an ELS LOGO command after completing 5230 * the UNREG_RPI. 5231 **/ 5232 static void 5233 lpfc_nlp_logo_unreg(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 5234 { 5235 struct lpfc_vport *vport = pmb->vport; 5236 struct lpfc_nodelist *ndlp; 5237 5238 ndlp = (struct lpfc_nodelist *)(pmb->ctx_ndlp); 5239 if (!ndlp) 5240 return; 5241 lpfc_issue_els_logo(vport, ndlp, 0); 5242 5243 /* Check to see if there are any deferred events to process */ 5244 if ((ndlp->nlp_flag & NLP_UNREG_INP) && 5245 (ndlp->nlp_defer_did != NLP_EVT_NOTHING_PENDING)) { 5246 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, 5247 "1434 UNREG cmpl deferred logo x%x " 5248 "on NPort x%x Data: x%x x%px\n", 5249 ndlp->nlp_rpi, ndlp->nlp_DID, 5250 ndlp->nlp_defer_did, ndlp); 5251 5252 ndlp->nlp_flag &= ~NLP_UNREG_INP; 5253 ndlp->nlp_defer_did = NLP_EVT_NOTHING_PENDING; 5254 lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0); 5255 } else { 5256 /* NLP_RELEASE_RPI is only set for SLI4 ports. */ 5257 if (ndlp->nlp_flag & NLP_RELEASE_RPI) { 5258 lpfc_sli4_free_rpi(vport->phba, ndlp->nlp_rpi); 5259 spin_lock_irq(&ndlp->lock); 5260 ndlp->nlp_flag &= ~NLP_RELEASE_RPI; 5261 ndlp->nlp_rpi = LPFC_RPI_ALLOC_ERROR; 5262 spin_unlock_irq(&ndlp->lock); 5263 } 5264 spin_lock_irq(&ndlp->lock); 5265 ndlp->nlp_flag &= ~NLP_UNREG_INP; 5266 spin_unlock_irq(&ndlp->lock); 5267 } 5268 5269 /* The node has an outstanding reference for the unreg. Now 5270 * that the LOGO action and cleanup are finished, release 5271 * resources. 5272 */ 5273 lpfc_nlp_put(ndlp); 5274 mempool_free(pmb, phba->mbox_mem_pool); 5275 } 5276 5277 /* 5278 * Sets the mailbox completion handler to be used for the 5279 * unreg_rpi command. The handler varies based on the state of 5280 * the port and what will be happening to the rpi next. 5281 */ 5282 static void 5283 lpfc_set_unreg_login_mbx_cmpl(struct lpfc_hba *phba, struct lpfc_vport *vport, 5284 struct lpfc_nodelist *ndlp, LPFC_MBOXQ_t *mbox) 5285 { 5286 unsigned long iflags; 5287 5288 /* Driver always gets a reference on the mailbox job 5289 * in support of async jobs. 5290 */ 5291 mbox->ctx_ndlp = lpfc_nlp_get(ndlp); 5292 if (!mbox->ctx_ndlp) 5293 return; 5294 5295 if (ndlp->nlp_flag & NLP_ISSUE_LOGO) { 5296 mbox->mbox_cmpl = lpfc_nlp_logo_unreg; 5297 5298 } else if (phba->sli_rev == LPFC_SLI_REV4 && 5299 (!(vport->load_flag & FC_UNLOADING)) && 5300 (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) >= 5301 LPFC_SLI_INTF_IF_TYPE_2) && 5302 (kref_read(&ndlp->kref) > 0)) { 5303 mbox->mbox_cmpl = lpfc_sli4_unreg_rpi_cmpl_clr; 5304 } else { 5305 if (vport->load_flag & FC_UNLOADING) { 5306 if (phba->sli_rev == LPFC_SLI_REV4) { 5307 spin_lock_irqsave(&ndlp->lock, iflags); 5308 ndlp->nlp_flag |= NLP_RELEASE_RPI; 5309 spin_unlock_irqrestore(&ndlp->lock, iflags); 5310 } 5311 } 5312 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl; 5313 } 5314 } 5315 5316 /* 5317 * Free rpi associated with LPFC_NODELIST entry. 5318 * This routine is called from lpfc_freenode(), when we are removing 5319 * a LPFC_NODELIST entry. It is also called if the driver initiates a 5320 * LOGO that completes successfully, and we are waiting to PLOGI back 5321 * to the remote NPort. In addition, it is called after we receive 5322 * and unsolicated ELS cmd, send back a rsp, the rsp completes and 5323 * we are waiting to PLOGI back to the remote NPort. 5324 */ 5325 int 5326 lpfc_unreg_rpi(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) 5327 { 5328 struct lpfc_hba *phba = vport->phba; 5329 LPFC_MBOXQ_t *mbox; 5330 int rc, acc_plogi = 1; 5331 uint16_t rpi; 5332 5333 if (ndlp->nlp_flag & NLP_RPI_REGISTERED || 5334 ndlp->nlp_flag & NLP_REG_LOGIN_SEND) { 5335 if (ndlp->nlp_flag & NLP_REG_LOGIN_SEND) 5336 lpfc_printf_vlog(vport, KERN_INFO, 5337 LOG_NODE | LOG_DISCOVERY, 5338 "3366 RPI x%x needs to be " 5339 "unregistered nlp_flag x%x " 5340 "did x%x\n", 5341 ndlp->nlp_rpi, ndlp->nlp_flag, 5342 ndlp->nlp_DID); 5343 5344 /* If there is already an UNREG in progress for this ndlp, 5345 * no need to queue up another one. 5346 */ 5347 if (ndlp->nlp_flag & NLP_UNREG_INP) { 5348 lpfc_printf_vlog(vport, KERN_INFO, 5349 LOG_NODE | LOG_DISCOVERY, 5350 "1436 unreg_rpi SKIP UNREG x%x on " 5351 "NPort x%x deferred x%x flg x%x " 5352 "Data: x%px\n", 5353 ndlp->nlp_rpi, ndlp->nlp_DID, 5354 ndlp->nlp_defer_did, 5355 ndlp->nlp_flag, ndlp); 5356 goto out; 5357 } 5358 5359 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 5360 if (mbox) { 5361 /* SLI4 ports require the physical rpi value. */ 5362 rpi = ndlp->nlp_rpi; 5363 if (phba->sli_rev == LPFC_SLI_REV4) 5364 rpi = phba->sli4_hba.rpi_ids[ndlp->nlp_rpi]; 5365 5366 lpfc_unreg_login(phba, vport->vpi, rpi, mbox); 5367 mbox->vport = vport; 5368 lpfc_set_unreg_login_mbx_cmpl(phba, vport, ndlp, mbox); 5369 if (!mbox->ctx_ndlp) { 5370 mempool_free(mbox, phba->mbox_mem_pool); 5371 return 1; 5372 } 5373 5374 if (mbox->mbox_cmpl == lpfc_sli4_unreg_rpi_cmpl_clr) 5375 /* 5376 * accept PLOGIs after unreg_rpi_cmpl 5377 */ 5378 acc_plogi = 0; 5379 if (((ndlp->nlp_DID & Fabric_DID_MASK) != 5380 Fabric_DID_MASK) && 5381 (!(vport->fc_flag & FC_OFFLINE_MODE))) 5382 ndlp->nlp_flag |= NLP_UNREG_INP; 5383 5384 lpfc_printf_vlog(vport, KERN_INFO, 5385 LOG_NODE | LOG_DISCOVERY, 5386 "1433 unreg_rpi UNREG x%x on " 5387 "NPort x%x deferred flg x%x " 5388 "Data:x%px\n", 5389 ndlp->nlp_rpi, ndlp->nlp_DID, 5390 ndlp->nlp_flag, ndlp); 5391 5392 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT); 5393 if (rc == MBX_NOT_FINISHED) { 5394 ndlp->nlp_flag &= ~NLP_UNREG_INP; 5395 mempool_free(mbox, phba->mbox_mem_pool); 5396 acc_plogi = 1; 5397 lpfc_nlp_put(ndlp); 5398 } 5399 } else { 5400 lpfc_printf_vlog(vport, KERN_INFO, 5401 LOG_NODE | LOG_DISCOVERY, 5402 "1444 Failed to allocate mempool " 5403 "unreg_rpi UNREG x%x, " 5404 "DID x%x, flag x%x, " 5405 "ndlp x%px\n", 5406 ndlp->nlp_rpi, ndlp->nlp_DID, 5407 ndlp->nlp_flag, ndlp); 5408 5409 /* Because mempool_alloc failed, we 5410 * will issue a LOGO here and keep the rpi alive if 5411 * not unloading. 5412 */ 5413 if (!(vport->load_flag & FC_UNLOADING)) { 5414 ndlp->nlp_flag &= ~NLP_UNREG_INP; 5415 lpfc_issue_els_logo(vport, ndlp, 0); 5416 ndlp->nlp_prev_state = ndlp->nlp_state; 5417 lpfc_nlp_set_state(vport, ndlp, 5418 NLP_STE_NPR_NODE); 5419 } 5420 5421 return 1; 5422 } 5423 lpfc_no_rpi(phba, ndlp); 5424 out: 5425 if (phba->sli_rev != LPFC_SLI_REV4) 5426 ndlp->nlp_rpi = 0; 5427 ndlp->nlp_flag &= ~NLP_RPI_REGISTERED; 5428 ndlp->nlp_flag &= ~NLP_NPR_ADISC; 5429 if (acc_plogi) 5430 ndlp->nlp_flag &= ~NLP_LOGO_ACC; 5431 return 1; 5432 } 5433 ndlp->nlp_flag &= ~NLP_LOGO_ACC; 5434 return 0; 5435 } 5436 5437 /** 5438 * lpfc_unreg_hba_rpis - Unregister rpis registered to the hba. 5439 * @phba: pointer to lpfc hba data structure. 5440 * 5441 * This routine is invoked to unregister all the currently registered RPIs 5442 * to the HBA. 5443 **/ 5444 void 5445 lpfc_unreg_hba_rpis(struct lpfc_hba *phba) 5446 { 5447 struct lpfc_vport **vports; 5448 struct lpfc_nodelist *ndlp; 5449 struct Scsi_Host *shost; 5450 int i; 5451 5452 vports = lpfc_create_vport_work_array(phba); 5453 if (!vports) { 5454 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 5455 "2884 Vport array allocation failed \n"); 5456 return; 5457 } 5458 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) { 5459 shost = lpfc_shost_from_vport(vports[i]); 5460 spin_lock_irq(shost->host_lock); 5461 list_for_each_entry(ndlp, &vports[i]->fc_nodes, nlp_listp) { 5462 if (ndlp->nlp_flag & NLP_RPI_REGISTERED) { 5463 /* The mempool_alloc might sleep */ 5464 spin_unlock_irq(shost->host_lock); 5465 lpfc_unreg_rpi(vports[i], ndlp); 5466 spin_lock_irq(shost->host_lock); 5467 } 5468 } 5469 spin_unlock_irq(shost->host_lock); 5470 } 5471 lpfc_destroy_vport_work_array(phba, vports); 5472 } 5473 5474 void 5475 lpfc_unreg_all_rpis(struct lpfc_vport *vport) 5476 { 5477 struct lpfc_hba *phba = vport->phba; 5478 LPFC_MBOXQ_t *mbox; 5479 int rc; 5480 5481 if (phba->sli_rev == LPFC_SLI_REV4) { 5482 lpfc_sli4_unreg_all_rpis(vport); 5483 return; 5484 } 5485 5486 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 5487 if (mbox) { 5488 lpfc_unreg_login(phba, vport->vpi, LPFC_UNREG_ALL_RPIS_VPORT, 5489 mbox); 5490 mbox->vport = vport; 5491 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl; 5492 mbox->ctx_ndlp = NULL; 5493 rc = lpfc_sli_issue_mbox_wait(phba, mbox, LPFC_MBOX_TMO); 5494 if (rc != MBX_TIMEOUT) 5495 mempool_free(mbox, phba->mbox_mem_pool); 5496 5497 if ((rc == MBX_TIMEOUT) || (rc == MBX_NOT_FINISHED)) 5498 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 5499 "1836 Could not issue " 5500 "unreg_login(all_rpis) status %d\n", 5501 rc); 5502 } 5503 } 5504 5505 void 5506 lpfc_unreg_default_rpis(struct lpfc_vport *vport) 5507 { 5508 struct lpfc_hba *phba = vport->phba; 5509 LPFC_MBOXQ_t *mbox; 5510 int rc; 5511 5512 /* Unreg DID is an SLI3 operation. */ 5513 if (phba->sli_rev > LPFC_SLI_REV3) 5514 return; 5515 5516 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 5517 if (mbox) { 5518 lpfc_unreg_did(phba, vport->vpi, LPFC_UNREG_ALL_DFLT_RPIS, 5519 mbox); 5520 mbox->vport = vport; 5521 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl; 5522 mbox->ctx_ndlp = NULL; 5523 rc = lpfc_sli_issue_mbox_wait(phba, mbox, LPFC_MBOX_TMO); 5524 if (rc != MBX_TIMEOUT) 5525 mempool_free(mbox, phba->mbox_mem_pool); 5526 5527 if ((rc == MBX_TIMEOUT) || (rc == MBX_NOT_FINISHED)) 5528 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 5529 "1815 Could not issue " 5530 "unreg_did (default rpis) status %d\n", 5531 rc); 5532 } 5533 } 5534 5535 /* 5536 * Free resources associated with LPFC_NODELIST entry 5537 * so it can be freed. 5538 */ 5539 static int 5540 lpfc_cleanup_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) 5541 { 5542 struct lpfc_hba *phba = vport->phba; 5543 LPFC_MBOXQ_t *mb, *nextmb; 5544 5545 /* Cleanup node for NPort <nlp_DID> */ 5546 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE, 5547 "0900 Cleanup node for NPort x%x " 5548 "Data: x%x x%x x%x\n", 5549 ndlp->nlp_DID, ndlp->nlp_flag, 5550 ndlp->nlp_state, ndlp->nlp_rpi); 5551 lpfc_dequeue_node(vport, ndlp); 5552 5553 /* Don't need to clean up REG_LOGIN64 cmds for Default RPI cleanup */ 5554 5555 /* cleanup any ndlp on mbox q waiting for reglogin cmpl */ 5556 if ((mb = phba->sli.mbox_active)) { 5557 if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) && 5558 !(mb->mbox_flag & LPFC_MBX_IMED_UNREG) && 5559 (ndlp == (struct lpfc_nodelist *)mb->ctx_ndlp)) { 5560 mb->ctx_ndlp = NULL; 5561 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl; 5562 } 5563 } 5564 5565 spin_lock_irq(&phba->hbalock); 5566 /* Cleanup REG_LOGIN completions which are not yet processed */ 5567 list_for_each_entry(mb, &phba->sli.mboxq_cmpl, list) { 5568 if ((mb->u.mb.mbxCommand != MBX_REG_LOGIN64) || 5569 (mb->mbox_flag & LPFC_MBX_IMED_UNREG) || 5570 (ndlp != (struct lpfc_nodelist *)mb->ctx_ndlp)) 5571 continue; 5572 5573 mb->ctx_ndlp = NULL; 5574 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl; 5575 } 5576 5577 list_for_each_entry_safe(mb, nextmb, &phba->sli.mboxq, list) { 5578 if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) && 5579 !(mb->mbox_flag & LPFC_MBX_IMED_UNREG) && 5580 (ndlp == (struct lpfc_nodelist *)mb->ctx_ndlp)) { 5581 list_del(&mb->list); 5582 lpfc_mbox_rsrc_cleanup(phba, mb, MBOX_THD_LOCKED); 5583 5584 /* Don't invoke lpfc_nlp_put. The driver is in 5585 * lpfc_nlp_release context. 5586 */ 5587 } 5588 } 5589 spin_unlock_irq(&phba->hbalock); 5590 5591 lpfc_els_abort(phba, ndlp); 5592 5593 spin_lock_irq(&ndlp->lock); 5594 ndlp->nlp_flag &= ~NLP_DELAY_TMO; 5595 spin_unlock_irq(&ndlp->lock); 5596 5597 ndlp->nlp_last_elscmd = 0; 5598 del_timer_sync(&ndlp->nlp_delayfunc); 5599 5600 list_del_init(&ndlp->els_retry_evt.evt_listp); 5601 list_del_init(&ndlp->dev_loss_evt.evt_listp); 5602 list_del_init(&ndlp->recovery_evt.evt_listp); 5603 lpfc_cleanup_vports_rrqs(vport, ndlp); 5604 5605 if (phba->sli_rev == LPFC_SLI_REV4) 5606 ndlp->nlp_flag |= NLP_RELEASE_RPI; 5607 5608 return 0; 5609 } 5610 5611 static int 5612 lpfc_matchdid(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 5613 uint32_t did) 5614 { 5615 D_ID mydid, ndlpdid, matchdid; 5616 5617 if (did == Bcast_DID) 5618 return 0; 5619 5620 /* First check for Direct match */ 5621 if (ndlp->nlp_DID == did) 5622 return 1; 5623 5624 /* Next check for area/domain identically equals 0 match */ 5625 mydid.un.word = vport->fc_myDID; 5626 if ((mydid.un.b.domain == 0) && (mydid.un.b.area == 0)) { 5627 return 0; 5628 } 5629 5630 matchdid.un.word = did; 5631 ndlpdid.un.word = ndlp->nlp_DID; 5632 if (matchdid.un.b.id == ndlpdid.un.b.id) { 5633 if ((mydid.un.b.domain == matchdid.un.b.domain) && 5634 (mydid.un.b.area == matchdid.un.b.area)) { 5635 /* This code is supposed to match the ID 5636 * for a private loop device that is 5637 * connect to fl_port. But we need to 5638 * check that the port did not just go 5639 * from pt2pt to fabric or we could end 5640 * up matching ndlp->nlp_DID 000001 to 5641 * fabric DID 0x20101 5642 */ 5643 if ((ndlpdid.un.b.domain == 0) && 5644 (ndlpdid.un.b.area == 0)) { 5645 if (ndlpdid.un.b.id && 5646 vport->phba->fc_topology == 5647 LPFC_TOPOLOGY_LOOP) 5648 return 1; 5649 } 5650 return 0; 5651 } 5652 5653 matchdid.un.word = ndlp->nlp_DID; 5654 if ((mydid.un.b.domain == ndlpdid.un.b.domain) && 5655 (mydid.un.b.area == ndlpdid.un.b.area)) { 5656 if ((matchdid.un.b.domain == 0) && 5657 (matchdid.un.b.area == 0)) { 5658 if (matchdid.un.b.id) 5659 return 1; 5660 } 5661 } 5662 } 5663 return 0; 5664 } 5665 5666 /* Search for a nodelist entry */ 5667 static struct lpfc_nodelist * 5668 __lpfc_findnode_did(struct lpfc_vport *vport, uint32_t did) 5669 { 5670 struct lpfc_nodelist *ndlp; 5671 uint32_t data1; 5672 5673 list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) { 5674 if (lpfc_matchdid(vport, ndlp, did)) { 5675 data1 = (((uint32_t)ndlp->nlp_state << 24) | 5676 ((uint32_t)ndlp->nlp_xri << 16) | 5677 ((uint32_t)ndlp->nlp_type << 8) 5678 ); 5679 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE, 5680 "0929 FIND node DID " 5681 "Data: x%px x%x x%x x%x x%x x%px\n", 5682 ndlp, ndlp->nlp_DID, 5683 ndlp->nlp_flag, data1, ndlp->nlp_rpi, 5684 ndlp->active_rrqs_xri_bitmap); 5685 return ndlp; 5686 } 5687 } 5688 5689 /* FIND node did <did> NOT FOUND */ 5690 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE, 5691 "0932 FIND node did x%x NOT FOUND.\n", did); 5692 return NULL; 5693 } 5694 5695 struct lpfc_nodelist * 5696 lpfc_findnode_did(struct lpfc_vport *vport, uint32_t did) 5697 { 5698 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 5699 struct lpfc_nodelist *ndlp; 5700 unsigned long iflags; 5701 5702 spin_lock_irqsave(shost->host_lock, iflags); 5703 ndlp = __lpfc_findnode_did(vport, did); 5704 spin_unlock_irqrestore(shost->host_lock, iflags); 5705 return ndlp; 5706 } 5707 5708 struct lpfc_nodelist * 5709 lpfc_findnode_mapped(struct lpfc_vport *vport) 5710 { 5711 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 5712 struct lpfc_nodelist *ndlp; 5713 uint32_t data1; 5714 unsigned long iflags; 5715 5716 spin_lock_irqsave(shost->host_lock, iflags); 5717 5718 list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) { 5719 if (ndlp->nlp_state == NLP_STE_UNMAPPED_NODE || 5720 ndlp->nlp_state == NLP_STE_MAPPED_NODE) { 5721 data1 = (((uint32_t)ndlp->nlp_state << 24) | 5722 ((uint32_t)ndlp->nlp_xri << 16) | 5723 ((uint32_t)ndlp->nlp_type << 8) | 5724 ((uint32_t)ndlp->nlp_rpi & 0xff)); 5725 spin_unlock_irqrestore(shost->host_lock, iflags); 5726 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE, 5727 "2025 FIND node DID " 5728 "Data: x%px x%x x%x x%x x%px\n", 5729 ndlp, ndlp->nlp_DID, 5730 ndlp->nlp_flag, data1, 5731 ndlp->active_rrqs_xri_bitmap); 5732 return ndlp; 5733 } 5734 } 5735 spin_unlock_irqrestore(shost->host_lock, iflags); 5736 5737 /* FIND node did <did> NOT FOUND */ 5738 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE, 5739 "2026 FIND mapped did NOT FOUND.\n"); 5740 return NULL; 5741 } 5742 5743 struct lpfc_nodelist * 5744 lpfc_setup_disc_node(struct lpfc_vport *vport, uint32_t did) 5745 { 5746 struct lpfc_nodelist *ndlp; 5747 5748 ndlp = lpfc_findnode_did(vport, did); 5749 if (!ndlp) { 5750 if (vport->phba->nvmet_support) 5751 return NULL; 5752 if ((vport->fc_flag & FC_RSCN_MODE) != 0 && 5753 lpfc_rscn_payload_check(vport, did) == 0) 5754 return NULL; 5755 ndlp = lpfc_nlp_init(vport, did); 5756 if (!ndlp) 5757 return NULL; 5758 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE); 5759 5760 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, 5761 "6453 Setup New Node 2B_DISC x%x " 5762 "Data:x%x x%x x%x\n", 5763 ndlp->nlp_DID, ndlp->nlp_flag, 5764 ndlp->nlp_state, vport->fc_flag); 5765 5766 spin_lock_irq(&ndlp->lock); 5767 ndlp->nlp_flag |= NLP_NPR_2B_DISC; 5768 spin_unlock_irq(&ndlp->lock); 5769 return ndlp; 5770 } 5771 5772 /* The NVME Target does not want to actively manage an rport. 5773 * The goal is to allow the target to reset its state and clear 5774 * pending IO in preparation for the initiator to recover. 5775 */ 5776 if ((vport->fc_flag & FC_RSCN_MODE) && 5777 !(vport->fc_flag & FC_NDISC_ACTIVE)) { 5778 if (lpfc_rscn_payload_check(vport, did)) { 5779 5780 /* Since this node is marked for discovery, 5781 * delay timeout is not needed. 5782 */ 5783 lpfc_cancel_retry_delay_tmo(vport, ndlp); 5784 5785 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, 5786 "6455 Setup RSCN Node 2B_DISC x%x " 5787 "Data:x%x x%x x%x\n", 5788 ndlp->nlp_DID, ndlp->nlp_flag, 5789 ndlp->nlp_state, vport->fc_flag); 5790 5791 /* NVME Target mode waits until rport is known to be 5792 * impacted by the RSCN before it transitions. No 5793 * active management - just go to NPR provided the 5794 * node had a valid login. 5795 */ 5796 if (vport->phba->nvmet_support) 5797 return ndlp; 5798 5799 /* If we've already received a PLOGI from this NPort 5800 * we don't need to try to discover it again. 5801 */ 5802 if (ndlp->nlp_flag & NLP_RCV_PLOGI && 5803 !(ndlp->nlp_type & 5804 (NLP_FCP_TARGET | NLP_NVME_TARGET))) 5805 return NULL; 5806 5807 ndlp->nlp_prev_state = ndlp->nlp_state; 5808 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE); 5809 5810 spin_lock_irq(&ndlp->lock); 5811 ndlp->nlp_flag |= NLP_NPR_2B_DISC; 5812 spin_unlock_irq(&ndlp->lock); 5813 } else { 5814 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, 5815 "6456 Skip Setup RSCN Node x%x " 5816 "Data:x%x x%x x%x\n", 5817 ndlp->nlp_DID, ndlp->nlp_flag, 5818 ndlp->nlp_state, vport->fc_flag); 5819 ndlp = NULL; 5820 } 5821 } else { 5822 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, 5823 "6457 Setup Active Node 2B_DISC x%x " 5824 "Data:x%x x%x x%x\n", 5825 ndlp->nlp_DID, ndlp->nlp_flag, 5826 ndlp->nlp_state, vport->fc_flag); 5827 5828 /* If the initiator received a PLOGI from this NPort or if the 5829 * initiator is already in the process of discovery on it, 5830 * there's no need to try to discover it again. 5831 */ 5832 if (ndlp->nlp_state == NLP_STE_ADISC_ISSUE || 5833 ndlp->nlp_state == NLP_STE_PLOGI_ISSUE || 5834 (!vport->phba->nvmet_support && 5835 ndlp->nlp_flag & NLP_RCV_PLOGI)) 5836 return NULL; 5837 5838 if (vport->phba->nvmet_support) 5839 return ndlp; 5840 5841 /* Moving to NPR state clears unsolicited flags and 5842 * allows for rediscovery 5843 */ 5844 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE); 5845 5846 spin_lock_irq(&ndlp->lock); 5847 ndlp->nlp_flag |= NLP_NPR_2B_DISC; 5848 spin_unlock_irq(&ndlp->lock); 5849 } 5850 return ndlp; 5851 } 5852 5853 /* Build a list of nodes to discover based on the loopmap */ 5854 void 5855 lpfc_disc_list_loopmap(struct lpfc_vport *vport) 5856 { 5857 struct lpfc_hba *phba = vport->phba; 5858 int j; 5859 uint32_t alpa, index; 5860 5861 if (!lpfc_is_link_up(phba)) 5862 return; 5863 5864 if (phba->fc_topology != LPFC_TOPOLOGY_LOOP) 5865 return; 5866 5867 /* Check for loop map present or not */ 5868 if (phba->alpa_map[0]) { 5869 for (j = 1; j <= phba->alpa_map[0]; j++) { 5870 alpa = phba->alpa_map[j]; 5871 if (((vport->fc_myDID & 0xff) == alpa) || (alpa == 0)) 5872 continue; 5873 lpfc_setup_disc_node(vport, alpa); 5874 } 5875 } else { 5876 /* No alpamap, so try all alpa's */ 5877 for (j = 0; j < FC_MAXLOOP; j++) { 5878 /* If cfg_scan_down is set, start from highest 5879 * ALPA (0xef) to lowest (0x1). 5880 */ 5881 if (vport->cfg_scan_down) 5882 index = j; 5883 else 5884 index = FC_MAXLOOP - j - 1; 5885 alpa = lpfcAlpaArray[index]; 5886 if ((vport->fc_myDID & 0xff) == alpa) 5887 continue; 5888 lpfc_setup_disc_node(vport, alpa); 5889 } 5890 } 5891 return; 5892 } 5893 5894 /* SLI3 only */ 5895 void 5896 lpfc_issue_clear_la(struct lpfc_hba *phba, struct lpfc_vport *vport) 5897 { 5898 LPFC_MBOXQ_t *mbox; 5899 struct lpfc_sli *psli = &phba->sli; 5900 struct lpfc_sli_ring *extra_ring = &psli->sli3_ring[LPFC_EXTRA_RING]; 5901 struct lpfc_sli_ring *fcp_ring = &psli->sli3_ring[LPFC_FCP_RING]; 5902 int rc; 5903 5904 /* 5905 * if it's not a physical port or if we already send 5906 * clear_la then don't send it. 5907 */ 5908 if ((phba->link_state >= LPFC_CLEAR_LA) || 5909 (vport->port_type != LPFC_PHYSICAL_PORT) || 5910 (phba->sli_rev == LPFC_SLI_REV4)) 5911 return; 5912 5913 /* Link up discovery */ 5914 if ((mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL)) != NULL) { 5915 phba->link_state = LPFC_CLEAR_LA; 5916 lpfc_clear_la(phba, mbox); 5917 mbox->mbox_cmpl = lpfc_mbx_cmpl_clear_la; 5918 mbox->vport = vport; 5919 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT); 5920 if (rc == MBX_NOT_FINISHED) { 5921 mempool_free(mbox, phba->mbox_mem_pool); 5922 lpfc_disc_flush_list(vport); 5923 extra_ring->flag &= ~LPFC_STOP_IOCB_EVENT; 5924 fcp_ring->flag &= ~LPFC_STOP_IOCB_EVENT; 5925 phba->link_state = LPFC_HBA_ERROR; 5926 } 5927 } 5928 } 5929 5930 /* Reg_vpi to tell firmware to resume normal operations */ 5931 void 5932 lpfc_issue_reg_vpi(struct lpfc_hba *phba, struct lpfc_vport *vport) 5933 { 5934 LPFC_MBOXQ_t *regvpimbox; 5935 5936 regvpimbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 5937 if (regvpimbox) { 5938 lpfc_reg_vpi(vport, regvpimbox); 5939 regvpimbox->mbox_cmpl = lpfc_mbx_cmpl_reg_vpi; 5940 regvpimbox->vport = vport; 5941 if (lpfc_sli_issue_mbox(phba, regvpimbox, MBX_NOWAIT) 5942 == MBX_NOT_FINISHED) { 5943 mempool_free(regvpimbox, phba->mbox_mem_pool); 5944 } 5945 } 5946 } 5947 5948 /* Start Link up / RSCN discovery on NPR nodes */ 5949 void 5950 lpfc_disc_start(struct lpfc_vport *vport) 5951 { 5952 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 5953 struct lpfc_hba *phba = vport->phba; 5954 uint32_t num_sent; 5955 uint32_t clear_la_pending; 5956 5957 if (!lpfc_is_link_up(phba)) { 5958 lpfc_printf_vlog(vport, KERN_INFO, LOG_SLI, 5959 "3315 Link is not up %x\n", 5960 phba->link_state); 5961 return; 5962 } 5963 5964 if (phba->link_state == LPFC_CLEAR_LA) 5965 clear_la_pending = 1; 5966 else 5967 clear_la_pending = 0; 5968 5969 if (vport->port_state < LPFC_VPORT_READY) 5970 vport->port_state = LPFC_DISC_AUTH; 5971 5972 lpfc_set_disctmo(vport); 5973 5974 vport->fc_prevDID = vport->fc_myDID; 5975 vport->num_disc_nodes = 0; 5976 5977 /* Start Discovery state <hba_state> */ 5978 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, 5979 "0202 Start Discovery port state x%x " 5980 "flg x%x Data: x%x x%x x%x\n", 5981 vport->port_state, vport->fc_flag, vport->fc_plogi_cnt, 5982 vport->fc_adisc_cnt, vport->fc_npr_cnt); 5983 5984 /* First do ADISCs - if any */ 5985 num_sent = lpfc_els_disc_adisc(vport); 5986 5987 if (num_sent) 5988 return; 5989 5990 /* Register the VPI for SLI3, NPIV only. */ 5991 if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) && 5992 !(vport->fc_flag & FC_PT2PT) && 5993 !(vport->fc_flag & FC_RSCN_MODE) && 5994 (phba->sli_rev < LPFC_SLI_REV4)) { 5995 lpfc_issue_clear_la(phba, vport); 5996 lpfc_issue_reg_vpi(phba, vport); 5997 return; 5998 } 5999 6000 /* 6001 * For SLI2, we need to set port_state to READY and continue 6002 * discovery. 6003 */ 6004 if (vport->port_state < LPFC_VPORT_READY && !clear_la_pending) { 6005 /* If we get here, there is nothing to ADISC */ 6006 lpfc_issue_clear_la(phba, vport); 6007 6008 if (!(vport->fc_flag & FC_ABORT_DISCOVERY)) { 6009 vport->num_disc_nodes = 0; 6010 /* go thru NPR nodes and issue ELS PLOGIs */ 6011 if (vport->fc_npr_cnt) 6012 lpfc_els_disc_plogi(vport); 6013 6014 if (!vport->num_disc_nodes) { 6015 spin_lock_irq(shost->host_lock); 6016 vport->fc_flag &= ~FC_NDISC_ACTIVE; 6017 spin_unlock_irq(shost->host_lock); 6018 lpfc_can_disctmo(vport); 6019 } 6020 } 6021 vport->port_state = LPFC_VPORT_READY; 6022 } else { 6023 /* Next do PLOGIs - if any */ 6024 num_sent = lpfc_els_disc_plogi(vport); 6025 6026 if (num_sent) 6027 return; 6028 6029 if (vport->fc_flag & FC_RSCN_MODE) { 6030 /* Check to see if more RSCNs came in while we 6031 * were processing this one. 6032 */ 6033 if ((vport->fc_rscn_id_cnt == 0) && 6034 (!(vport->fc_flag & FC_RSCN_DISCOVERY))) { 6035 spin_lock_irq(shost->host_lock); 6036 vport->fc_flag &= ~FC_RSCN_MODE; 6037 spin_unlock_irq(shost->host_lock); 6038 lpfc_can_disctmo(vport); 6039 } else 6040 lpfc_els_handle_rscn(vport); 6041 } 6042 } 6043 return; 6044 } 6045 6046 /* 6047 * Ignore completion for all IOCBs on tx and txcmpl queue for ELS 6048 * ring the match the sppecified nodelist. 6049 */ 6050 static void 6051 lpfc_free_tx(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp) 6052 { 6053 LIST_HEAD(completions); 6054 struct lpfc_iocbq *iocb, *next_iocb; 6055 struct lpfc_sli_ring *pring; 6056 u32 ulp_command; 6057 6058 pring = lpfc_phba_elsring(phba); 6059 if (unlikely(!pring)) 6060 return; 6061 6062 /* Error matching iocb on txq or txcmplq 6063 * First check the txq. 6064 */ 6065 spin_lock_irq(&phba->hbalock); 6066 list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) { 6067 if (iocb->ndlp != ndlp) 6068 continue; 6069 6070 ulp_command = get_job_cmnd(phba, iocb); 6071 6072 if (ulp_command == CMD_ELS_REQUEST64_CR || 6073 ulp_command == CMD_XMIT_ELS_RSP64_CX) { 6074 6075 list_move_tail(&iocb->list, &completions); 6076 } 6077 } 6078 6079 /* Next check the txcmplq */ 6080 list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq, list) { 6081 if (iocb->ndlp != ndlp) 6082 continue; 6083 6084 ulp_command = get_job_cmnd(phba, iocb); 6085 6086 if (ulp_command == CMD_ELS_REQUEST64_CR || 6087 ulp_command == CMD_XMIT_ELS_RSP64_CX) { 6088 lpfc_sli_issue_abort_iotag(phba, pring, iocb, NULL); 6089 } 6090 } 6091 spin_unlock_irq(&phba->hbalock); 6092 6093 /* Make sure HBA is alive */ 6094 lpfc_issue_hb_tmo(phba); 6095 6096 /* Cancel all the IOCBs from the completions list */ 6097 lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT, 6098 IOERR_SLI_ABORTED); 6099 } 6100 6101 static void 6102 lpfc_disc_flush_list(struct lpfc_vport *vport) 6103 { 6104 struct lpfc_nodelist *ndlp, *next_ndlp; 6105 struct lpfc_hba *phba = vport->phba; 6106 6107 if (vport->fc_plogi_cnt || vport->fc_adisc_cnt) { 6108 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, 6109 nlp_listp) { 6110 if (ndlp->nlp_state == NLP_STE_PLOGI_ISSUE || 6111 ndlp->nlp_state == NLP_STE_ADISC_ISSUE) { 6112 lpfc_free_tx(phba, ndlp); 6113 } 6114 } 6115 } 6116 } 6117 6118 /* 6119 * lpfc_notify_xport_npr - notifies xport of node disappearance 6120 * @vport: Pointer to Virtual Port object. 6121 * 6122 * Transitions all ndlps to NPR state. When lpfc_nlp_set_state 6123 * calls lpfc_nlp_state_cleanup, the ndlp->rport is unregistered 6124 * and transport notified that the node is gone. 6125 * Return Code: 6126 * none 6127 */ 6128 static void 6129 lpfc_notify_xport_npr(struct lpfc_vport *vport) 6130 { 6131 struct lpfc_nodelist *ndlp, *next_ndlp; 6132 6133 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, 6134 nlp_listp) { 6135 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE); 6136 } 6137 } 6138 void 6139 lpfc_cleanup_discovery_resources(struct lpfc_vport *vport) 6140 { 6141 lpfc_els_flush_rscn(vport); 6142 lpfc_els_flush_cmd(vport); 6143 lpfc_disc_flush_list(vport); 6144 if (pci_channel_offline(vport->phba->pcidev)) 6145 lpfc_notify_xport_npr(vport); 6146 } 6147 6148 /*****************************************************************************/ 6149 /* 6150 * NAME: lpfc_disc_timeout 6151 * 6152 * FUNCTION: Fibre Channel driver discovery timeout routine. 6153 * 6154 * EXECUTION ENVIRONMENT: interrupt only 6155 * 6156 * CALLED FROM: 6157 * Timer function 6158 * 6159 * RETURNS: 6160 * none 6161 */ 6162 /*****************************************************************************/ 6163 void 6164 lpfc_disc_timeout(struct timer_list *t) 6165 { 6166 struct lpfc_vport *vport = from_timer(vport, t, fc_disctmo); 6167 struct lpfc_hba *phba = vport->phba; 6168 uint32_t tmo_posted; 6169 unsigned long flags = 0; 6170 6171 if (unlikely(!phba)) 6172 return; 6173 6174 spin_lock_irqsave(&vport->work_port_lock, flags); 6175 tmo_posted = vport->work_port_events & WORKER_DISC_TMO; 6176 if (!tmo_posted) 6177 vport->work_port_events |= WORKER_DISC_TMO; 6178 spin_unlock_irqrestore(&vport->work_port_lock, flags); 6179 6180 if (!tmo_posted) 6181 lpfc_worker_wake_up(phba); 6182 return; 6183 } 6184 6185 static void 6186 lpfc_disc_timeout_handler(struct lpfc_vport *vport) 6187 { 6188 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 6189 struct lpfc_hba *phba = vport->phba; 6190 struct lpfc_sli *psli = &phba->sli; 6191 struct lpfc_nodelist *ndlp, *next_ndlp; 6192 LPFC_MBOXQ_t *initlinkmbox; 6193 int rc, clrlaerr = 0; 6194 6195 if (!(vport->fc_flag & FC_DISC_TMO)) 6196 return; 6197 6198 spin_lock_irq(shost->host_lock); 6199 vport->fc_flag &= ~FC_DISC_TMO; 6200 spin_unlock_irq(shost->host_lock); 6201 6202 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, 6203 "disc timeout: state:x%x rtry:x%x flg:x%x", 6204 vport->port_state, vport->fc_ns_retry, vport->fc_flag); 6205 6206 switch (vport->port_state) { 6207 6208 case LPFC_LOCAL_CFG_LINK: 6209 /* 6210 * port_state is identically LPFC_LOCAL_CFG_LINK while 6211 * waiting for FAN timeout 6212 */ 6213 lpfc_printf_vlog(vport, KERN_WARNING, LOG_DISCOVERY, 6214 "0221 FAN timeout\n"); 6215 6216 /* Start discovery by sending FLOGI, clean up old rpis */ 6217 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, 6218 nlp_listp) { 6219 if (ndlp->nlp_state != NLP_STE_NPR_NODE) 6220 continue; 6221 if (ndlp->nlp_type & NLP_FABRIC) { 6222 /* Clean up the ndlp on Fabric connections */ 6223 lpfc_drop_node(vport, ndlp); 6224 6225 } else if (!(ndlp->nlp_flag & NLP_NPR_ADISC)) { 6226 /* Fail outstanding IO now since device 6227 * is marked for PLOGI. 6228 */ 6229 lpfc_unreg_rpi(vport, ndlp); 6230 } 6231 } 6232 if (vport->port_state != LPFC_FLOGI) { 6233 if (phba->sli_rev <= LPFC_SLI_REV3) 6234 lpfc_initial_flogi(vport); 6235 else 6236 lpfc_issue_init_vfi(vport); 6237 return; 6238 } 6239 break; 6240 6241 case LPFC_FDISC: 6242 case LPFC_FLOGI: 6243 /* port_state is identically LPFC_FLOGI while waiting for FLOGI cmpl */ 6244 /* Initial FLOGI timeout */ 6245 lpfc_printf_vlog(vport, KERN_ERR, 6246 LOG_TRACE_EVENT, 6247 "0222 Initial %s timeout\n", 6248 vport->vpi ? "FDISC" : "FLOGI"); 6249 6250 /* Assume no Fabric and go on with discovery. 6251 * Check for outstanding ELS FLOGI to abort. 6252 */ 6253 6254 /* FLOGI failed, so just use loop map to make discovery list */ 6255 lpfc_disc_list_loopmap(vport); 6256 6257 /* Start discovery */ 6258 lpfc_disc_start(vport); 6259 break; 6260 6261 case LPFC_FABRIC_CFG_LINK: 6262 /* hba_state is identically LPFC_FABRIC_CFG_LINK while waiting for 6263 NameServer login */ 6264 lpfc_printf_vlog(vport, KERN_ERR, 6265 LOG_TRACE_EVENT, 6266 "0223 Timeout while waiting for " 6267 "NameServer login\n"); 6268 /* Next look for NameServer ndlp */ 6269 ndlp = lpfc_findnode_did(vport, NameServer_DID); 6270 if (ndlp) 6271 lpfc_els_abort(phba, ndlp); 6272 6273 /* ReStart discovery */ 6274 goto restart_disc; 6275 6276 case LPFC_NS_QRY: 6277 /* Check for wait for NameServer Rsp timeout */ 6278 lpfc_printf_vlog(vport, KERN_ERR, 6279 LOG_TRACE_EVENT, 6280 "0224 NameServer Query timeout " 6281 "Data: x%x x%x\n", 6282 vport->fc_ns_retry, LPFC_MAX_NS_RETRY); 6283 6284 if (vport->fc_ns_retry < LPFC_MAX_NS_RETRY) { 6285 /* Try it one more time */ 6286 vport->fc_ns_retry++; 6287 vport->gidft_inp = 0; 6288 rc = lpfc_issue_gidft(vport); 6289 if (rc == 0) 6290 break; 6291 } 6292 vport->fc_ns_retry = 0; 6293 6294 restart_disc: 6295 /* 6296 * Discovery is over. 6297 * set port_state to PORT_READY if SLI2. 6298 * cmpl_reg_vpi will set port_state to READY for SLI3. 6299 */ 6300 if (phba->sli_rev < LPFC_SLI_REV4) { 6301 if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) 6302 lpfc_issue_reg_vpi(phba, vport); 6303 else { 6304 lpfc_issue_clear_la(phba, vport); 6305 vport->port_state = LPFC_VPORT_READY; 6306 } 6307 } 6308 6309 /* Setup and issue mailbox INITIALIZE LINK command */ 6310 initlinkmbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 6311 if (!initlinkmbox) { 6312 lpfc_printf_vlog(vport, KERN_ERR, 6313 LOG_TRACE_EVENT, 6314 "0206 Device Discovery " 6315 "completion error\n"); 6316 phba->link_state = LPFC_HBA_ERROR; 6317 break; 6318 } 6319 6320 lpfc_linkdown(phba); 6321 lpfc_init_link(phba, initlinkmbox, phba->cfg_topology, 6322 phba->cfg_link_speed); 6323 initlinkmbox->u.mb.un.varInitLnk.lipsr_AL_PA = 0; 6324 initlinkmbox->vport = vport; 6325 initlinkmbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl; 6326 rc = lpfc_sli_issue_mbox(phba, initlinkmbox, MBX_NOWAIT); 6327 lpfc_set_loopback_flag(phba); 6328 if (rc == MBX_NOT_FINISHED) 6329 mempool_free(initlinkmbox, phba->mbox_mem_pool); 6330 6331 break; 6332 6333 case LPFC_DISC_AUTH: 6334 /* Node Authentication timeout */ 6335 lpfc_printf_vlog(vport, KERN_ERR, 6336 LOG_TRACE_EVENT, 6337 "0227 Node Authentication timeout\n"); 6338 lpfc_disc_flush_list(vport); 6339 6340 /* 6341 * set port_state to PORT_READY if SLI2. 6342 * cmpl_reg_vpi will set port_state to READY for SLI3. 6343 */ 6344 if (phba->sli_rev < LPFC_SLI_REV4) { 6345 if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) 6346 lpfc_issue_reg_vpi(phba, vport); 6347 else { /* NPIV Not enabled */ 6348 lpfc_issue_clear_la(phba, vport); 6349 vport->port_state = LPFC_VPORT_READY; 6350 } 6351 } 6352 break; 6353 6354 case LPFC_VPORT_READY: 6355 if (vport->fc_flag & FC_RSCN_MODE) { 6356 lpfc_printf_vlog(vport, KERN_ERR, 6357 LOG_TRACE_EVENT, 6358 "0231 RSCN timeout Data: x%x " 6359 "x%x x%x x%x\n", 6360 vport->fc_ns_retry, LPFC_MAX_NS_RETRY, 6361 vport->port_state, vport->gidft_inp); 6362 6363 /* Cleanup any outstanding ELS commands */ 6364 lpfc_els_flush_cmd(vport); 6365 6366 lpfc_els_flush_rscn(vport); 6367 lpfc_disc_flush_list(vport); 6368 } 6369 break; 6370 6371 default: 6372 lpfc_printf_vlog(vport, KERN_ERR, 6373 LOG_TRACE_EVENT, 6374 "0273 Unexpected discovery timeout, " 6375 "vport State x%x\n", vport->port_state); 6376 break; 6377 } 6378 6379 switch (phba->link_state) { 6380 case LPFC_CLEAR_LA: 6381 /* CLEAR LA timeout */ 6382 lpfc_printf_vlog(vport, KERN_ERR, 6383 LOG_TRACE_EVENT, 6384 "0228 CLEAR LA timeout\n"); 6385 clrlaerr = 1; 6386 break; 6387 6388 case LPFC_LINK_UP: 6389 lpfc_issue_clear_la(phba, vport); 6390 fallthrough; 6391 case LPFC_LINK_UNKNOWN: 6392 case LPFC_WARM_START: 6393 case LPFC_INIT_START: 6394 case LPFC_INIT_MBX_CMDS: 6395 case LPFC_LINK_DOWN: 6396 case LPFC_HBA_ERROR: 6397 lpfc_printf_vlog(vport, KERN_ERR, 6398 LOG_TRACE_EVENT, 6399 "0230 Unexpected timeout, hba link " 6400 "state x%x\n", phba->link_state); 6401 clrlaerr = 1; 6402 break; 6403 6404 case LPFC_HBA_READY: 6405 break; 6406 } 6407 6408 if (clrlaerr) { 6409 lpfc_disc_flush_list(vport); 6410 if (phba->sli_rev != LPFC_SLI_REV4) { 6411 psli->sli3_ring[(LPFC_EXTRA_RING)].flag &= 6412 ~LPFC_STOP_IOCB_EVENT; 6413 psli->sli3_ring[LPFC_FCP_RING].flag &= 6414 ~LPFC_STOP_IOCB_EVENT; 6415 } 6416 vport->port_state = LPFC_VPORT_READY; 6417 } 6418 return; 6419 } 6420 6421 /* 6422 * This routine handles processing a NameServer REG_LOGIN mailbox 6423 * command upon completion. It is setup in the LPFC_MBOXQ 6424 * as the completion routine when the command is 6425 * handed off to the SLI layer. 6426 */ 6427 void 6428 lpfc_mbx_cmpl_fdmi_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 6429 { 6430 MAILBOX_t *mb = &pmb->u.mb; 6431 struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *)pmb->ctx_ndlp; 6432 struct lpfc_vport *vport = pmb->vport; 6433 6434 pmb->ctx_ndlp = NULL; 6435 6436 if (phba->sli_rev < LPFC_SLI_REV4) 6437 ndlp->nlp_rpi = mb->un.varWords[0]; 6438 ndlp->nlp_flag |= NLP_RPI_REGISTERED; 6439 ndlp->nlp_type |= NLP_FABRIC; 6440 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE); 6441 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE | LOG_DISCOVERY, 6442 "0004 rpi:%x DID:%x flg:%x %d x%px\n", 6443 ndlp->nlp_rpi, ndlp->nlp_DID, ndlp->nlp_flag, 6444 kref_read(&ndlp->kref), 6445 ndlp); 6446 /* 6447 * Start issuing Fabric-Device Management Interface (FDMI) command to 6448 * 0xfffffa (FDMI well known port). 6449 * DHBA -> DPRT -> RHBA -> RPA (physical port) 6450 * DPRT -> RPRT (vports) 6451 */ 6452 if (vport->port_type == LPFC_PHYSICAL_PORT) { 6453 phba->link_flag &= ~LS_CT_VEN_RPA; /* For extra Vendor RPA */ 6454 lpfc_fdmi_cmd(vport, ndlp, SLI_MGMT_DHBA, 0); 6455 } else { 6456 lpfc_fdmi_cmd(vport, ndlp, SLI_MGMT_DPRT, 0); 6457 } 6458 6459 6460 /* decrement the node reference count held for this callback 6461 * function. 6462 */ 6463 lpfc_nlp_put(ndlp); 6464 lpfc_mbox_rsrc_cleanup(phba, pmb, MBOX_THD_UNLOCKED); 6465 return; 6466 } 6467 6468 static int 6469 lpfc_filter_by_rpi(struct lpfc_nodelist *ndlp, void *param) 6470 { 6471 uint16_t *rpi = param; 6472 6473 return ndlp->nlp_rpi == *rpi; 6474 } 6475 6476 static int 6477 lpfc_filter_by_wwpn(struct lpfc_nodelist *ndlp, void *param) 6478 { 6479 return memcmp(&ndlp->nlp_portname, param, 6480 sizeof(ndlp->nlp_portname)) == 0; 6481 } 6482 6483 static struct lpfc_nodelist * 6484 __lpfc_find_node(struct lpfc_vport *vport, node_filter filter, void *param) 6485 { 6486 struct lpfc_nodelist *ndlp; 6487 6488 list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) { 6489 if (filter(ndlp, param)) { 6490 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE, 6491 "3185 FIND node filter %ps DID " 6492 "ndlp x%px did x%x flg x%x st x%x " 6493 "xri x%x type x%x rpi x%x\n", 6494 filter, ndlp, ndlp->nlp_DID, 6495 ndlp->nlp_flag, ndlp->nlp_state, 6496 ndlp->nlp_xri, ndlp->nlp_type, 6497 ndlp->nlp_rpi); 6498 return ndlp; 6499 } 6500 } 6501 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE, 6502 "3186 FIND node filter %ps NOT FOUND.\n", filter); 6503 return NULL; 6504 } 6505 6506 /* 6507 * This routine looks up the ndlp lists for the given RPI. If rpi found it 6508 * returns the node list element pointer else return NULL. 6509 */ 6510 struct lpfc_nodelist * 6511 __lpfc_findnode_rpi(struct lpfc_vport *vport, uint16_t rpi) 6512 { 6513 return __lpfc_find_node(vport, lpfc_filter_by_rpi, &rpi); 6514 } 6515 6516 /* 6517 * This routine looks up the ndlp lists for the given WWPN. If WWPN found it 6518 * returns the node element list pointer else return NULL. 6519 */ 6520 struct lpfc_nodelist * 6521 lpfc_findnode_wwpn(struct lpfc_vport *vport, struct lpfc_name *wwpn) 6522 { 6523 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 6524 struct lpfc_nodelist *ndlp; 6525 6526 spin_lock_irq(shost->host_lock); 6527 ndlp = __lpfc_find_node(vport, lpfc_filter_by_wwpn, wwpn); 6528 spin_unlock_irq(shost->host_lock); 6529 return ndlp; 6530 } 6531 6532 /* 6533 * This routine looks up the ndlp lists for the given RPI. If the rpi 6534 * is found, the routine returns the node element list pointer else 6535 * return NULL. 6536 */ 6537 struct lpfc_nodelist * 6538 lpfc_findnode_rpi(struct lpfc_vport *vport, uint16_t rpi) 6539 { 6540 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 6541 struct lpfc_nodelist *ndlp; 6542 unsigned long flags; 6543 6544 spin_lock_irqsave(shost->host_lock, flags); 6545 ndlp = __lpfc_findnode_rpi(vport, rpi); 6546 spin_unlock_irqrestore(shost->host_lock, flags); 6547 return ndlp; 6548 } 6549 6550 /** 6551 * lpfc_find_vport_by_vpid - Find a vport on a HBA through vport identifier 6552 * @phba: pointer to lpfc hba data structure. 6553 * @vpi: the physical host virtual N_Port identifier. 6554 * 6555 * This routine finds a vport on a HBA (referred by @phba) through a 6556 * @vpi. The function walks the HBA's vport list and returns the address 6557 * of the vport with the matching @vpi. 6558 * 6559 * Return code 6560 * NULL - No vport with the matching @vpi found 6561 * Otherwise - Address to the vport with the matching @vpi. 6562 **/ 6563 struct lpfc_vport * 6564 lpfc_find_vport_by_vpid(struct lpfc_hba *phba, uint16_t vpi) 6565 { 6566 struct lpfc_vport *vport; 6567 unsigned long flags; 6568 int i = 0; 6569 6570 /* The physical ports are always vpi 0 - translate is unnecessary. */ 6571 if (vpi > 0) { 6572 /* 6573 * Translate the physical vpi to the logical vpi. The 6574 * vport stores the logical vpi. 6575 */ 6576 for (i = 0; i <= phba->max_vpi; i++) { 6577 if (vpi == phba->vpi_ids[i]) 6578 break; 6579 } 6580 6581 if (i > phba->max_vpi) { 6582 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 6583 "2936 Could not find Vport mapped " 6584 "to vpi %d\n", vpi); 6585 return NULL; 6586 } 6587 } 6588 6589 spin_lock_irqsave(&phba->port_list_lock, flags); 6590 list_for_each_entry(vport, &phba->port_list, listentry) { 6591 if (vport->vpi == i) { 6592 spin_unlock_irqrestore(&phba->port_list_lock, flags); 6593 return vport; 6594 } 6595 } 6596 spin_unlock_irqrestore(&phba->port_list_lock, flags); 6597 return NULL; 6598 } 6599 6600 struct lpfc_nodelist * 6601 lpfc_nlp_init(struct lpfc_vport *vport, uint32_t did) 6602 { 6603 struct lpfc_nodelist *ndlp; 6604 int rpi = LPFC_RPI_ALLOC_ERROR; 6605 6606 if (vport->phba->sli_rev == LPFC_SLI_REV4) { 6607 rpi = lpfc_sli4_alloc_rpi(vport->phba); 6608 if (rpi == LPFC_RPI_ALLOC_ERROR) 6609 return NULL; 6610 } 6611 6612 ndlp = mempool_alloc(vport->phba->nlp_mem_pool, GFP_KERNEL); 6613 if (!ndlp) { 6614 if (vport->phba->sli_rev == LPFC_SLI_REV4) 6615 lpfc_sli4_free_rpi(vport->phba, rpi); 6616 return NULL; 6617 } 6618 6619 memset(ndlp, 0, sizeof (struct lpfc_nodelist)); 6620 6621 spin_lock_init(&ndlp->lock); 6622 6623 lpfc_initialize_node(vport, ndlp, did); 6624 INIT_LIST_HEAD(&ndlp->nlp_listp); 6625 if (vport->phba->sli_rev == LPFC_SLI_REV4) { 6626 ndlp->nlp_rpi = rpi; 6627 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE | LOG_DISCOVERY, 6628 "0007 Init New ndlp x%px, rpi:x%x DID:%x " 6629 "flg:x%x refcnt:%d\n", 6630 ndlp, ndlp->nlp_rpi, ndlp->nlp_DID, 6631 ndlp->nlp_flag, kref_read(&ndlp->kref)); 6632 6633 ndlp->active_rrqs_xri_bitmap = 6634 mempool_alloc(vport->phba->active_rrq_pool, 6635 GFP_KERNEL); 6636 if (ndlp->active_rrqs_xri_bitmap) 6637 memset(ndlp->active_rrqs_xri_bitmap, 0, 6638 ndlp->phba->cfg_rrq_xri_bitmap_sz); 6639 } 6640 6641 6642 6643 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE, 6644 "node init: did:x%x", 6645 ndlp->nlp_DID, 0, 0); 6646 6647 return ndlp; 6648 } 6649 6650 /* This routine releases all resources associated with a specifc NPort's ndlp 6651 * and mempool_free's the nodelist. 6652 */ 6653 static void 6654 lpfc_nlp_release(struct kref *kref) 6655 { 6656 struct lpfc_nodelist *ndlp = container_of(kref, struct lpfc_nodelist, 6657 kref); 6658 struct lpfc_vport *vport = ndlp->vport; 6659 6660 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE, 6661 "node release: did:x%x flg:x%x type:x%x", 6662 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type); 6663 6664 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE, 6665 "0279 %s: ndlp: x%px did %x refcnt:%d rpi:%x\n", 6666 __func__, ndlp, ndlp->nlp_DID, 6667 kref_read(&ndlp->kref), ndlp->nlp_rpi); 6668 6669 /* remove ndlp from action. */ 6670 lpfc_cancel_retry_delay_tmo(vport, ndlp); 6671 lpfc_cleanup_node(vport, ndlp); 6672 6673 /* Not all ELS transactions have registered the RPI with the port. 6674 * In these cases the rpi usage is temporary and the node is 6675 * released when the WQE is completed. Catch this case to free the 6676 * RPI to the pool. Because this node is in the release path, a lock 6677 * is unnecessary. All references are gone and the node has been 6678 * dequeued. 6679 */ 6680 if (ndlp->nlp_flag & NLP_RELEASE_RPI) { 6681 if (ndlp->nlp_rpi != LPFC_RPI_ALLOC_ERROR && 6682 !(ndlp->nlp_flag & (NLP_RPI_REGISTERED | NLP_UNREG_INP))) { 6683 lpfc_sli4_free_rpi(vport->phba, ndlp->nlp_rpi); 6684 ndlp->nlp_rpi = LPFC_RPI_ALLOC_ERROR; 6685 } 6686 } 6687 6688 /* The node is not freed back to memory, it is released to a pool so 6689 * the node fields need to be cleaned up. 6690 */ 6691 ndlp->vport = NULL; 6692 ndlp->nlp_state = NLP_STE_FREED_NODE; 6693 ndlp->nlp_flag = 0; 6694 ndlp->fc4_xpt_flags = 0; 6695 6696 /* free ndlp memory for final ndlp release */ 6697 kfree(ndlp->lat_data); 6698 if (ndlp->phba->sli_rev == LPFC_SLI_REV4) 6699 mempool_free(ndlp->active_rrqs_xri_bitmap, 6700 ndlp->phba->active_rrq_pool); 6701 mempool_free(ndlp, ndlp->phba->nlp_mem_pool); 6702 } 6703 6704 /* This routine bumps the reference count for a ndlp structure to ensure 6705 * that one discovery thread won't free a ndlp while another discovery thread 6706 * is using it. 6707 */ 6708 struct lpfc_nodelist * 6709 lpfc_nlp_get(struct lpfc_nodelist *ndlp) 6710 { 6711 unsigned long flags; 6712 6713 if (ndlp) { 6714 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE, 6715 "node get: did:x%x flg:x%x refcnt:x%x", 6716 ndlp->nlp_DID, ndlp->nlp_flag, 6717 kref_read(&ndlp->kref)); 6718 6719 /* The check of ndlp usage to prevent incrementing the 6720 * ndlp reference count that is in the process of being 6721 * released. 6722 */ 6723 spin_lock_irqsave(&ndlp->lock, flags); 6724 if (!kref_get_unless_zero(&ndlp->kref)) { 6725 spin_unlock_irqrestore(&ndlp->lock, flags); 6726 lpfc_printf_vlog(ndlp->vport, KERN_WARNING, LOG_NODE, 6727 "0276 %s: ndlp:x%px refcnt:%d\n", 6728 __func__, (void *)ndlp, kref_read(&ndlp->kref)); 6729 return NULL; 6730 } 6731 spin_unlock_irqrestore(&ndlp->lock, flags); 6732 } else { 6733 WARN_ONCE(!ndlp, "**** %s, get ref on NULL ndlp!", __func__); 6734 } 6735 6736 return ndlp; 6737 } 6738 6739 /* This routine decrements the reference count for a ndlp structure. If the 6740 * count goes to 0, this indicates the associated nodelist should be freed. 6741 */ 6742 int 6743 lpfc_nlp_put(struct lpfc_nodelist *ndlp) 6744 { 6745 if (ndlp) { 6746 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE, 6747 "node put: did:x%x flg:x%x refcnt:x%x", 6748 ndlp->nlp_DID, ndlp->nlp_flag, 6749 kref_read(&ndlp->kref)); 6750 } else { 6751 WARN_ONCE(!ndlp, "**** %s, put ref on NULL ndlp!", __func__); 6752 } 6753 6754 return ndlp ? kref_put(&ndlp->kref, lpfc_nlp_release) : 0; 6755 } 6756 6757 /* This routine free's the specified nodelist if it is not in use 6758 * by any other discovery thread. This routine returns 1 if the 6759 * ndlp has been freed. A return value of 0 indicates the ndlp is 6760 * not yet been released. 6761 */ 6762 int 6763 lpfc_nlp_not_used(struct lpfc_nodelist *ndlp) 6764 { 6765 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE, 6766 "node not used: did:x%x flg:x%x refcnt:x%x", 6767 ndlp->nlp_DID, ndlp->nlp_flag, 6768 kref_read(&ndlp->kref)); 6769 6770 if (kref_read(&ndlp->kref) == 1) 6771 if (lpfc_nlp_put(ndlp)) 6772 return 1; 6773 return 0; 6774 } 6775 6776 /** 6777 * lpfc_fcf_inuse - Check if FCF can be unregistered. 6778 * @phba: Pointer to hba context object. 6779 * 6780 * This function iterate through all FC nodes associated 6781 * will all vports to check if there is any node with 6782 * fc_rports associated with it. If there is an fc_rport 6783 * associated with the node, then the node is either in 6784 * discovered state or its devloss_timer is pending. 6785 */ 6786 static int 6787 lpfc_fcf_inuse(struct lpfc_hba *phba) 6788 { 6789 struct lpfc_vport **vports; 6790 int i, ret = 0; 6791 struct lpfc_nodelist *ndlp; 6792 struct Scsi_Host *shost; 6793 6794 vports = lpfc_create_vport_work_array(phba); 6795 6796 /* If driver cannot allocate memory, indicate fcf is in use */ 6797 if (!vports) 6798 return 1; 6799 6800 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) { 6801 shost = lpfc_shost_from_vport(vports[i]); 6802 spin_lock_irq(shost->host_lock); 6803 /* 6804 * IF the CVL_RCVD bit is not set then we have sent the 6805 * flogi. 6806 * If dev_loss fires while we are waiting we do not want to 6807 * unreg the fcf. 6808 */ 6809 if (!(vports[i]->fc_flag & FC_VPORT_CVL_RCVD)) { 6810 spin_unlock_irq(shost->host_lock); 6811 ret = 1; 6812 goto out; 6813 } 6814 list_for_each_entry(ndlp, &vports[i]->fc_nodes, nlp_listp) { 6815 if (ndlp->rport && 6816 (ndlp->rport->roles & FC_RPORT_ROLE_FCP_TARGET)) { 6817 ret = 1; 6818 spin_unlock_irq(shost->host_lock); 6819 goto out; 6820 } else if (ndlp->nlp_flag & NLP_RPI_REGISTERED) { 6821 ret = 1; 6822 lpfc_printf_log(phba, KERN_INFO, 6823 LOG_NODE | LOG_DISCOVERY, 6824 "2624 RPI %x DID %x flag %x " 6825 "still logged in\n", 6826 ndlp->nlp_rpi, ndlp->nlp_DID, 6827 ndlp->nlp_flag); 6828 } 6829 } 6830 spin_unlock_irq(shost->host_lock); 6831 } 6832 out: 6833 lpfc_destroy_vport_work_array(phba, vports); 6834 return ret; 6835 } 6836 6837 /** 6838 * lpfc_unregister_vfi_cmpl - Completion handler for unreg vfi. 6839 * @phba: Pointer to hba context object. 6840 * @mboxq: Pointer to mailbox object. 6841 * 6842 * This function frees memory associated with the mailbox command. 6843 */ 6844 void 6845 lpfc_unregister_vfi_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq) 6846 { 6847 struct lpfc_vport *vport = mboxq->vport; 6848 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 6849 6850 if (mboxq->u.mb.mbxStatus) { 6851 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 6852 "2555 UNREG_VFI mbxStatus error x%x " 6853 "HBA state x%x\n", 6854 mboxq->u.mb.mbxStatus, vport->port_state); 6855 } 6856 spin_lock_irq(shost->host_lock); 6857 phba->pport->fc_flag &= ~FC_VFI_REGISTERED; 6858 spin_unlock_irq(shost->host_lock); 6859 mempool_free(mboxq, phba->mbox_mem_pool); 6860 return; 6861 } 6862 6863 /** 6864 * lpfc_unregister_fcfi_cmpl - Completion handler for unreg fcfi. 6865 * @phba: Pointer to hba context object. 6866 * @mboxq: Pointer to mailbox object. 6867 * 6868 * This function frees memory associated with the mailbox command. 6869 */ 6870 static void 6871 lpfc_unregister_fcfi_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq) 6872 { 6873 struct lpfc_vport *vport = mboxq->vport; 6874 6875 if (mboxq->u.mb.mbxStatus) { 6876 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 6877 "2550 UNREG_FCFI mbxStatus error x%x " 6878 "HBA state x%x\n", 6879 mboxq->u.mb.mbxStatus, vport->port_state); 6880 } 6881 mempool_free(mboxq, phba->mbox_mem_pool); 6882 return; 6883 } 6884 6885 /** 6886 * lpfc_unregister_fcf_prep - Unregister fcf record preparation 6887 * @phba: Pointer to hba context object. 6888 * 6889 * This function prepare the HBA for unregistering the currently registered 6890 * FCF from the HBA. It performs unregistering, in order, RPIs, VPIs, and 6891 * VFIs. 6892 */ 6893 int 6894 lpfc_unregister_fcf_prep(struct lpfc_hba *phba) 6895 { 6896 struct lpfc_vport **vports; 6897 struct lpfc_nodelist *ndlp; 6898 struct Scsi_Host *shost; 6899 int i = 0, rc; 6900 6901 /* Unregister RPIs */ 6902 if (lpfc_fcf_inuse(phba)) 6903 lpfc_unreg_hba_rpis(phba); 6904 6905 /* At this point, all discovery is aborted */ 6906 phba->pport->port_state = LPFC_VPORT_UNKNOWN; 6907 6908 /* Unregister VPIs */ 6909 vports = lpfc_create_vport_work_array(phba); 6910 if (vports && (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)) 6911 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) { 6912 /* Stop FLOGI/FDISC retries */ 6913 ndlp = lpfc_findnode_did(vports[i], Fabric_DID); 6914 if (ndlp) 6915 lpfc_cancel_retry_delay_tmo(vports[i], ndlp); 6916 lpfc_cleanup_pending_mbox(vports[i]); 6917 if (phba->sli_rev == LPFC_SLI_REV4) 6918 lpfc_sli4_unreg_all_rpis(vports[i]); 6919 lpfc_mbx_unreg_vpi(vports[i]); 6920 shost = lpfc_shost_from_vport(vports[i]); 6921 spin_lock_irq(shost->host_lock); 6922 vports[i]->fc_flag |= FC_VPORT_NEEDS_INIT_VPI; 6923 vports[i]->vpi_state &= ~LPFC_VPI_REGISTERED; 6924 spin_unlock_irq(shost->host_lock); 6925 } 6926 lpfc_destroy_vport_work_array(phba, vports); 6927 if (i == 0 && (!(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED))) { 6928 ndlp = lpfc_findnode_did(phba->pport, Fabric_DID); 6929 if (ndlp) 6930 lpfc_cancel_retry_delay_tmo(phba->pport, ndlp); 6931 lpfc_cleanup_pending_mbox(phba->pport); 6932 if (phba->sli_rev == LPFC_SLI_REV4) 6933 lpfc_sli4_unreg_all_rpis(phba->pport); 6934 lpfc_mbx_unreg_vpi(phba->pport); 6935 shost = lpfc_shost_from_vport(phba->pport); 6936 spin_lock_irq(shost->host_lock); 6937 phba->pport->fc_flag |= FC_VPORT_NEEDS_INIT_VPI; 6938 phba->pport->vpi_state &= ~LPFC_VPI_REGISTERED; 6939 spin_unlock_irq(shost->host_lock); 6940 } 6941 6942 /* Cleanup any outstanding ELS commands */ 6943 lpfc_els_flush_all_cmd(phba); 6944 6945 /* Unregister the physical port VFI */ 6946 rc = lpfc_issue_unreg_vfi(phba->pport); 6947 return rc; 6948 } 6949 6950 /** 6951 * lpfc_sli4_unregister_fcf - Unregister currently registered FCF record 6952 * @phba: Pointer to hba context object. 6953 * 6954 * This function issues synchronous unregister FCF mailbox command to HBA to 6955 * unregister the currently registered FCF record. The driver does not reset 6956 * the driver FCF usage state flags. 6957 * 6958 * Return 0 if successfully issued, none-zero otherwise. 6959 */ 6960 int 6961 lpfc_sli4_unregister_fcf(struct lpfc_hba *phba) 6962 { 6963 LPFC_MBOXQ_t *mbox; 6964 int rc; 6965 6966 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 6967 if (!mbox) { 6968 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 6969 "2551 UNREG_FCFI mbox allocation failed" 6970 "HBA state x%x\n", phba->pport->port_state); 6971 return -ENOMEM; 6972 } 6973 lpfc_unreg_fcfi(mbox, phba->fcf.fcfi); 6974 mbox->vport = phba->pport; 6975 mbox->mbox_cmpl = lpfc_unregister_fcfi_cmpl; 6976 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT); 6977 6978 if (rc == MBX_NOT_FINISHED) { 6979 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 6980 "2552 Unregister FCFI command failed rc x%x " 6981 "HBA state x%x\n", 6982 rc, phba->pport->port_state); 6983 return -EINVAL; 6984 } 6985 return 0; 6986 } 6987 6988 /** 6989 * lpfc_unregister_fcf_rescan - Unregister currently registered fcf and rescan 6990 * @phba: Pointer to hba context object. 6991 * 6992 * This function unregisters the currently reigstered FCF. This function 6993 * also tries to find another FCF for discovery by rescan the HBA FCF table. 6994 */ 6995 void 6996 lpfc_unregister_fcf_rescan(struct lpfc_hba *phba) 6997 { 6998 int rc; 6999 7000 /* Preparation for unregistering fcf */ 7001 rc = lpfc_unregister_fcf_prep(phba); 7002 if (rc) { 7003 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 7004 "2748 Failed to prepare for unregistering " 7005 "HBA's FCF record: rc=%d\n", rc); 7006 return; 7007 } 7008 7009 /* Now, unregister FCF record and reset HBA FCF state */ 7010 rc = lpfc_sli4_unregister_fcf(phba); 7011 if (rc) 7012 return; 7013 /* Reset HBA FCF states after successful unregister FCF */ 7014 phba->fcf.fcf_flag = 0; 7015 phba->fcf.current_rec.flag = 0; 7016 7017 /* 7018 * If driver is not unloading, check if there is any other 7019 * FCF record that can be used for discovery. 7020 */ 7021 if ((phba->pport->load_flag & FC_UNLOADING) || 7022 (phba->link_state < LPFC_LINK_UP)) 7023 return; 7024 7025 /* This is considered as the initial FCF discovery scan */ 7026 spin_lock_irq(&phba->hbalock); 7027 phba->fcf.fcf_flag |= FCF_INIT_DISC; 7028 spin_unlock_irq(&phba->hbalock); 7029 7030 /* Reset FCF roundrobin bmask for new discovery */ 7031 lpfc_sli4_clear_fcf_rr_bmask(phba); 7032 7033 rc = lpfc_sli4_fcf_scan_read_fcf_rec(phba, LPFC_FCOE_FCF_GET_FIRST); 7034 7035 if (rc) { 7036 spin_lock_irq(&phba->hbalock); 7037 phba->fcf.fcf_flag &= ~FCF_INIT_DISC; 7038 spin_unlock_irq(&phba->hbalock); 7039 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 7040 "2553 lpfc_unregister_unused_fcf failed " 7041 "to read FCF record HBA state x%x\n", 7042 phba->pport->port_state); 7043 } 7044 } 7045 7046 /** 7047 * lpfc_unregister_fcf - Unregister the currently registered fcf record 7048 * @phba: Pointer to hba context object. 7049 * 7050 * This function just unregisters the currently reigstered FCF. It does not 7051 * try to find another FCF for discovery. 7052 */ 7053 void 7054 lpfc_unregister_fcf(struct lpfc_hba *phba) 7055 { 7056 int rc; 7057 7058 /* Preparation for unregistering fcf */ 7059 rc = lpfc_unregister_fcf_prep(phba); 7060 if (rc) { 7061 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 7062 "2749 Failed to prepare for unregistering " 7063 "HBA's FCF record: rc=%d\n", rc); 7064 return; 7065 } 7066 7067 /* Now, unregister FCF record and reset HBA FCF state */ 7068 rc = lpfc_sli4_unregister_fcf(phba); 7069 if (rc) 7070 return; 7071 /* Set proper HBA FCF states after successful unregister FCF */ 7072 spin_lock_irq(&phba->hbalock); 7073 phba->fcf.fcf_flag &= ~FCF_REGISTERED; 7074 spin_unlock_irq(&phba->hbalock); 7075 } 7076 7077 /** 7078 * lpfc_unregister_unused_fcf - Unregister FCF if all devices are disconnected. 7079 * @phba: Pointer to hba context object. 7080 * 7081 * This function check if there are any connected remote port for the FCF and 7082 * if all the devices are disconnected, this function unregister FCFI. 7083 * This function also tries to use another FCF for discovery. 7084 */ 7085 void 7086 lpfc_unregister_unused_fcf(struct lpfc_hba *phba) 7087 { 7088 /* 7089 * If HBA is not running in FIP mode, if HBA does not support 7090 * FCoE, if FCF discovery is ongoing, or if FCF has not been 7091 * registered, do nothing. 7092 */ 7093 spin_lock_irq(&phba->hbalock); 7094 if (!(phba->hba_flag & HBA_FCOE_MODE) || 7095 !(phba->fcf.fcf_flag & FCF_REGISTERED) || 7096 !(phba->hba_flag & HBA_FIP_SUPPORT) || 7097 (phba->fcf.fcf_flag & FCF_DISCOVERY) || 7098 (phba->pport->port_state == LPFC_FLOGI)) { 7099 spin_unlock_irq(&phba->hbalock); 7100 return; 7101 } 7102 spin_unlock_irq(&phba->hbalock); 7103 7104 if (lpfc_fcf_inuse(phba)) 7105 return; 7106 7107 lpfc_unregister_fcf_rescan(phba); 7108 } 7109 7110 /** 7111 * lpfc_read_fcf_conn_tbl - Create driver FCF connection table. 7112 * @phba: Pointer to hba context object. 7113 * @buff: Buffer containing the FCF connection table as in the config 7114 * region. 7115 * This function create driver data structure for the FCF connection 7116 * record table read from config region 23. 7117 */ 7118 static void 7119 lpfc_read_fcf_conn_tbl(struct lpfc_hba *phba, 7120 uint8_t *buff) 7121 { 7122 struct lpfc_fcf_conn_entry *conn_entry, *next_conn_entry; 7123 struct lpfc_fcf_conn_hdr *conn_hdr; 7124 struct lpfc_fcf_conn_rec *conn_rec; 7125 uint32_t record_count; 7126 int i; 7127 7128 /* Free the current connect table */ 7129 list_for_each_entry_safe(conn_entry, next_conn_entry, 7130 &phba->fcf_conn_rec_list, list) { 7131 list_del_init(&conn_entry->list); 7132 kfree(conn_entry); 7133 } 7134 7135 conn_hdr = (struct lpfc_fcf_conn_hdr *) buff; 7136 record_count = conn_hdr->length * sizeof(uint32_t)/ 7137 sizeof(struct lpfc_fcf_conn_rec); 7138 7139 conn_rec = (struct lpfc_fcf_conn_rec *) 7140 (buff + sizeof(struct lpfc_fcf_conn_hdr)); 7141 7142 for (i = 0; i < record_count; i++) { 7143 if (!(conn_rec[i].flags & FCFCNCT_VALID)) 7144 continue; 7145 conn_entry = kzalloc(sizeof(struct lpfc_fcf_conn_entry), 7146 GFP_KERNEL); 7147 if (!conn_entry) { 7148 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 7149 "2566 Failed to allocate connection" 7150 " table entry\n"); 7151 return; 7152 } 7153 7154 memcpy(&conn_entry->conn_rec, &conn_rec[i], 7155 sizeof(struct lpfc_fcf_conn_rec)); 7156 list_add_tail(&conn_entry->list, 7157 &phba->fcf_conn_rec_list); 7158 } 7159 7160 if (!list_empty(&phba->fcf_conn_rec_list)) { 7161 i = 0; 7162 list_for_each_entry(conn_entry, &phba->fcf_conn_rec_list, 7163 list) { 7164 conn_rec = &conn_entry->conn_rec; 7165 lpfc_printf_log(phba, KERN_INFO, LOG_INIT, 7166 "3345 FCF connection list rec[%02d]: " 7167 "flags:x%04x, vtag:x%04x, " 7168 "fabric_name:x%02x:%02x:%02x:%02x:" 7169 "%02x:%02x:%02x:%02x, " 7170 "switch_name:x%02x:%02x:%02x:%02x:" 7171 "%02x:%02x:%02x:%02x\n", i++, 7172 conn_rec->flags, conn_rec->vlan_tag, 7173 conn_rec->fabric_name[0], 7174 conn_rec->fabric_name[1], 7175 conn_rec->fabric_name[2], 7176 conn_rec->fabric_name[3], 7177 conn_rec->fabric_name[4], 7178 conn_rec->fabric_name[5], 7179 conn_rec->fabric_name[6], 7180 conn_rec->fabric_name[7], 7181 conn_rec->switch_name[0], 7182 conn_rec->switch_name[1], 7183 conn_rec->switch_name[2], 7184 conn_rec->switch_name[3], 7185 conn_rec->switch_name[4], 7186 conn_rec->switch_name[5], 7187 conn_rec->switch_name[6], 7188 conn_rec->switch_name[7]); 7189 } 7190 } 7191 } 7192 7193 /** 7194 * lpfc_read_fcoe_param - Read FCoe parameters from conf region.. 7195 * @phba: Pointer to hba context object. 7196 * @buff: Buffer containing the FCoE parameter data structure. 7197 * 7198 * This function update driver data structure with config 7199 * parameters read from config region 23. 7200 */ 7201 static void 7202 lpfc_read_fcoe_param(struct lpfc_hba *phba, 7203 uint8_t *buff) 7204 { 7205 struct lpfc_fip_param_hdr *fcoe_param_hdr; 7206 struct lpfc_fcoe_params *fcoe_param; 7207 7208 fcoe_param_hdr = (struct lpfc_fip_param_hdr *) 7209 buff; 7210 fcoe_param = (struct lpfc_fcoe_params *) 7211 (buff + sizeof(struct lpfc_fip_param_hdr)); 7212 7213 if ((fcoe_param_hdr->parm_version != FIPP_VERSION) || 7214 (fcoe_param_hdr->length != FCOE_PARAM_LENGTH)) 7215 return; 7216 7217 if (fcoe_param_hdr->parm_flags & FIPP_VLAN_VALID) { 7218 phba->valid_vlan = 1; 7219 phba->vlan_id = le16_to_cpu(fcoe_param->vlan_tag) & 7220 0xFFF; 7221 } 7222 7223 phba->fc_map[0] = fcoe_param->fc_map[0]; 7224 phba->fc_map[1] = fcoe_param->fc_map[1]; 7225 phba->fc_map[2] = fcoe_param->fc_map[2]; 7226 return; 7227 } 7228 7229 /** 7230 * lpfc_get_rec_conf23 - Get a record type in config region data. 7231 * @buff: Buffer containing config region 23 data. 7232 * @size: Size of the data buffer. 7233 * @rec_type: Record type to be searched. 7234 * 7235 * This function searches config region data to find the beginning 7236 * of the record specified by record_type. If record found, this 7237 * function return pointer to the record else return NULL. 7238 */ 7239 static uint8_t * 7240 lpfc_get_rec_conf23(uint8_t *buff, uint32_t size, uint8_t rec_type) 7241 { 7242 uint32_t offset = 0, rec_length; 7243 7244 if ((buff[0] == LPFC_REGION23_LAST_REC) || 7245 (size < sizeof(uint32_t))) 7246 return NULL; 7247 7248 rec_length = buff[offset + 1]; 7249 7250 /* 7251 * One TLV record has one word header and number of data words 7252 * specified in the rec_length field of the record header. 7253 */ 7254 while ((offset + rec_length * sizeof(uint32_t) + sizeof(uint32_t)) 7255 <= size) { 7256 if (buff[offset] == rec_type) 7257 return &buff[offset]; 7258 7259 if (buff[offset] == LPFC_REGION23_LAST_REC) 7260 return NULL; 7261 7262 offset += rec_length * sizeof(uint32_t) + sizeof(uint32_t); 7263 rec_length = buff[offset + 1]; 7264 } 7265 return NULL; 7266 } 7267 7268 /** 7269 * lpfc_parse_fcoe_conf - Parse FCoE config data read from config region 23. 7270 * @phba: Pointer to lpfc_hba data structure. 7271 * @buff: Buffer containing config region 23 data. 7272 * @size: Size of the data buffer. 7273 * 7274 * This function parses the FCoE config parameters in config region 23 and 7275 * populate driver data structure with the parameters. 7276 */ 7277 void 7278 lpfc_parse_fcoe_conf(struct lpfc_hba *phba, 7279 uint8_t *buff, 7280 uint32_t size) 7281 { 7282 uint32_t offset = 0; 7283 uint8_t *rec_ptr; 7284 7285 /* 7286 * If data size is less than 2 words signature and version cannot be 7287 * verified. 7288 */ 7289 if (size < 2*sizeof(uint32_t)) 7290 return; 7291 7292 /* Check the region signature first */ 7293 if (memcmp(buff, LPFC_REGION23_SIGNATURE, 4)) { 7294 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 7295 "2567 Config region 23 has bad signature\n"); 7296 return; 7297 } 7298 7299 offset += 4; 7300 7301 /* Check the data structure version */ 7302 if (buff[offset] != LPFC_REGION23_VERSION) { 7303 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 7304 "2568 Config region 23 has bad version\n"); 7305 return; 7306 } 7307 offset += 4; 7308 7309 /* Read FCoE param record */ 7310 rec_ptr = lpfc_get_rec_conf23(&buff[offset], 7311 size - offset, FCOE_PARAM_TYPE); 7312 if (rec_ptr) 7313 lpfc_read_fcoe_param(phba, rec_ptr); 7314 7315 /* Read FCF connection table */ 7316 rec_ptr = lpfc_get_rec_conf23(&buff[offset], 7317 size - offset, FCOE_CONN_TBL_TYPE); 7318 if (rec_ptr) 7319 lpfc_read_fcf_conn_tbl(phba, rec_ptr); 7320 7321 } 7322