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 Scsi_Host *shost = lpfc_shost_from_vport(vport); 1187 1188 if (vport->cfg_enable_fc4_type != LPFC_ENABLE_NVME) 1189 fc_host_post_event(shost, fc_get_event_number(), 1190 FCH_EVT_LINKDOWN, 0); 1191 1192 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, 1193 "Link Down: state:x%x rtry:x%x flg:x%x", 1194 vport->port_state, vport->fc_ns_retry, vport->fc_flag); 1195 1196 lpfc_port_link_failure(vport); 1197 1198 /* Stop delayed Nport discovery */ 1199 spin_lock_irq(shost->host_lock); 1200 vport->fc_flag &= ~FC_DISC_DELAYED; 1201 spin_unlock_irq(shost->host_lock); 1202 del_timer_sync(&vport->delayed_disc_tmo); 1203 } 1204 1205 int 1206 lpfc_linkdown(struct lpfc_hba *phba) 1207 { 1208 struct lpfc_vport *vport = phba->pport; 1209 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 1210 struct lpfc_vport **vports; 1211 LPFC_MBOXQ_t *mb; 1212 int i; 1213 int offline; 1214 1215 if (phba->link_state == LPFC_LINK_DOWN) 1216 return 0; 1217 1218 /* Block all SCSI stack I/Os */ 1219 lpfc_scsi_dev_block(phba); 1220 offline = pci_channel_offline(phba->pcidev); 1221 1222 phba->defer_flogi_acc_flag = false; 1223 1224 spin_lock_irq(&phba->hbalock); 1225 phba->fcf.fcf_flag &= ~(FCF_AVAILABLE | FCF_SCAN_DONE); 1226 spin_unlock_irq(&phba->hbalock); 1227 if (phba->link_state > LPFC_LINK_DOWN) { 1228 phba->link_state = LPFC_LINK_DOWN; 1229 if (phba->sli4_hba.conf_trunk) { 1230 phba->trunk_link.link0.state = 0; 1231 phba->trunk_link.link1.state = 0; 1232 phba->trunk_link.link2.state = 0; 1233 phba->trunk_link.link3.state = 0; 1234 phba->sli4_hba.link_state.logical_speed = 1235 LPFC_LINK_SPEED_UNKNOWN; 1236 } 1237 spin_lock_irq(shost->host_lock); 1238 phba->pport->fc_flag &= ~FC_LBIT; 1239 spin_unlock_irq(shost->host_lock); 1240 } 1241 vports = lpfc_create_vport_work_array(phba); 1242 if (vports != NULL) { 1243 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) { 1244 /* Issue a LINK DOWN event to all nodes */ 1245 lpfc_linkdown_port(vports[i]); 1246 1247 vports[i]->fc_myDID = 0; 1248 1249 if ((vport->cfg_enable_fc4_type == LPFC_ENABLE_BOTH) || 1250 (vport->cfg_enable_fc4_type == LPFC_ENABLE_NVME)) { 1251 if (phba->nvmet_support) 1252 lpfc_nvmet_update_targetport(phba); 1253 else 1254 lpfc_nvme_update_localport(vports[i]); 1255 } 1256 } 1257 } 1258 lpfc_destroy_vport_work_array(phba, vports); 1259 1260 /* Clean up any SLI3 firmware default rpi's */ 1261 if (phba->sli_rev > LPFC_SLI_REV3 || offline) 1262 goto skip_unreg_did; 1263 1264 mb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 1265 if (mb) { 1266 lpfc_unreg_did(phba, 0xffff, LPFC_UNREG_ALL_DFLT_RPIS, mb); 1267 mb->vport = vport; 1268 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl; 1269 if (lpfc_sli_issue_mbox(phba, mb, MBX_NOWAIT) 1270 == MBX_NOT_FINISHED) { 1271 mempool_free(mb, phba->mbox_mem_pool); 1272 } 1273 } 1274 1275 skip_unreg_did: 1276 /* Setup myDID for link up if we are in pt2pt mode */ 1277 if (phba->pport->fc_flag & FC_PT2PT) { 1278 mb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 1279 if (mb) { 1280 lpfc_config_link(phba, mb); 1281 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl; 1282 mb->vport = vport; 1283 if (lpfc_sli_issue_mbox(phba, mb, MBX_NOWAIT) 1284 == MBX_NOT_FINISHED) { 1285 mempool_free(mb, phba->mbox_mem_pool); 1286 } 1287 } 1288 spin_lock_irq(shost->host_lock); 1289 phba->pport->fc_flag &= ~(FC_PT2PT | FC_PT2PT_PLOGI); 1290 phba->pport->rcv_flogi_cnt = 0; 1291 spin_unlock_irq(shost->host_lock); 1292 } 1293 return 0; 1294 } 1295 1296 static void 1297 lpfc_linkup_cleanup_nodes(struct lpfc_vport *vport) 1298 { 1299 struct lpfc_nodelist *ndlp; 1300 1301 list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) { 1302 ndlp->nlp_fc4_type &= ~(NLP_FC4_FCP | NLP_FC4_NVME); 1303 1304 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE) 1305 continue; 1306 if (ndlp->nlp_type & NLP_FABRIC) { 1307 /* On Linkup its safe to clean up the ndlp 1308 * from Fabric connections. 1309 */ 1310 if (ndlp->nlp_DID != Fabric_DID) 1311 lpfc_unreg_rpi(vport, ndlp); 1312 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE); 1313 } else if (!(ndlp->nlp_flag & NLP_NPR_ADISC)) { 1314 /* Fail outstanding IO now since device is 1315 * marked for PLOGI. 1316 */ 1317 lpfc_unreg_rpi(vport, ndlp); 1318 } 1319 } 1320 } 1321 1322 static void 1323 lpfc_linkup_port(struct lpfc_vport *vport) 1324 { 1325 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 1326 struct lpfc_hba *phba = vport->phba; 1327 1328 if ((vport->load_flag & FC_UNLOADING) != 0) 1329 return; 1330 1331 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, 1332 "Link Up: top:x%x speed:x%x flg:x%x", 1333 phba->fc_topology, phba->fc_linkspeed, phba->link_flag); 1334 1335 /* If NPIV is not enabled, only bring the physical port up */ 1336 if (!(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) && 1337 (vport != phba->pport)) 1338 return; 1339 1340 if (vport->cfg_enable_fc4_type != LPFC_ENABLE_NVME) 1341 fc_host_post_event(shost, fc_get_event_number(), 1342 FCH_EVT_LINKUP, 0); 1343 1344 spin_lock_irq(shost->host_lock); 1345 vport->fc_flag &= ~(FC_PT2PT | FC_PT2PT_PLOGI | FC_ABORT_DISCOVERY | 1346 FC_RSCN_MODE | FC_NLP_MORE | FC_RSCN_DISCOVERY); 1347 vport->fc_flag |= FC_NDISC_ACTIVE; 1348 vport->fc_ns_retry = 0; 1349 spin_unlock_irq(shost->host_lock); 1350 1351 lpfc_linkup_cleanup_nodes(vport); 1352 } 1353 1354 static int 1355 lpfc_linkup(struct lpfc_hba *phba) 1356 { 1357 struct lpfc_vport **vports; 1358 int i; 1359 struct Scsi_Host *shost = lpfc_shost_from_vport(phba->pport); 1360 1361 phba->link_state = LPFC_LINK_UP; 1362 1363 /* Unblock fabric iocbs if they are blocked */ 1364 clear_bit(FABRIC_COMANDS_BLOCKED, &phba->bit_flags); 1365 del_timer_sync(&phba->fabric_block_timer); 1366 1367 vports = lpfc_create_vport_work_array(phba); 1368 if (vports != NULL) 1369 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) 1370 lpfc_linkup_port(vports[i]); 1371 lpfc_destroy_vport_work_array(phba, vports); 1372 1373 /* Clear the pport flogi counter in case the link down was 1374 * absorbed without an ACQE. No lock here - in worker thread 1375 * and discovery is synchronized. 1376 */ 1377 spin_lock_irq(shost->host_lock); 1378 phba->pport->rcv_flogi_cnt = 0; 1379 spin_unlock_irq(shost->host_lock); 1380 1381 /* reinitialize initial FLOGI flag */ 1382 phba->hba_flag &= ~(HBA_FLOGI_ISSUED); 1383 phba->defer_flogi_acc_flag = false; 1384 1385 return 0; 1386 } 1387 1388 /* 1389 * This routine handles processing a CLEAR_LA mailbox 1390 * command upon completion. It is setup in the LPFC_MBOXQ 1391 * as the completion routine when the command is 1392 * handed off to the SLI layer. SLI3 only. 1393 */ 1394 static void 1395 lpfc_mbx_cmpl_clear_la(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 1396 { 1397 struct lpfc_vport *vport = pmb->vport; 1398 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 1399 struct lpfc_sli *psli = &phba->sli; 1400 MAILBOX_t *mb = &pmb->u.mb; 1401 uint32_t control; 1402 1403 /* Since we don't do discovery right now, turn these off here */ 1404 psli->sli3_ring[LPFC_EXTRA_RING].flag &= ~LPFC_STOP_IOCB_EVENT; 1405 psli->sli3_ring[LPFC_FCP_RING].flag &= ~LPFC_STOP_IOCB_EVENT; 1406 1407 /* Check for error */ 1408 if ((mb->mbxStatus) && (mb->mbxStatus != 0x1601)) { 1409 /* CLEAR_LA mbox error <mbxStatus> state <hba_state> */ 1410 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 1411 "0320 CLEAR_LA mbxStatus error x%x hba " 1412 "state x%x\n", 1413 mb->mbxStatus, vport->port_state); 1414 phba->link_state = LPFC_HBA_ERROR; 1415 goto out; 1416 } 1417 1418 if (vport->port_type == LPFC_PHYSICAL_PORT) 1419 phba->link_state = LPFC_HBA_READY; 1420 1421 spin_lock_irq(&phba->hbalock); 1422 psli->sli_flag |= LPFC_PROCESS_LA; 1423 control = readl(phba->HCregaddr); 1424 control |= HC_LAINT_ENA; 1425 writel(control, phba->HCregaddr); 1426 readl(phba->HCregaddr); /* flush */ 1427 spin_unlock_irq(&phba->hbalock); 1428 mempool_free(pmb, phba->mbox_mem_pool); 1429 return; 1430 1431 out: 1432 /* Device Discovery completes */ 1433 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, 1434 "0225 Device Discovery completes\n"); 1435 mempool_free(pmb, phba->mbox_mem_pool); 1436 1437 spin_lock_irq(shost->host_lock); 1438 vport->fc_flag &= ~FC_ABORT_DISCOVERY; 1439 spin_unlock_irq(shost->host_lock); 1440 1441 lpfc_can_disctmo(vport); 1442 1443 /* turn on Link Attention interrupts */ 1444 1445 spin_lock_irq(&phba->hbalock); 1446 psli->sli_flag |= LPFC_PROCESS_LA; 1447 control = readl(phba->HCregaddr); 1448 control |= HC_LAINT_ENA; 1449 writel(control, phba->HCregaddr); 1450 readl(phba->HCregaddr); /* flush */ 1451 spin_unlock_irq(&phba->hbalock); 1452 1453 return; 1454 } 1455 1456 void 1457 lpfc_mbx_cmpl_local_config_link(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 1458 { 1459 struct lpfc_vport *vport = pmb->vport; 1460 LPFC_MBOXQ_t *sparam_mb; 1461 struct lpfc_dmabuf *sparam_mp; 1462 u16 status = pmb->u.mb.mbxStatus; 1463 int rc; 1464 1465 mempool_free(pmb, phba->mbox_mem_pool); 1466 1467 if (status) 1468 goto out; 1469 1470 /* don't perform discovery for SLI4 loopback diagnostic test */ 1471 if ((phba->sli_rev == LPFC_SLI_REV4) && 1472 !(phba->hba_flag & HBA_FCOE_MODE) && 1473 (phba->link_flag & LS_LOOPBACK_MODE)) 1474 return; 1475 1476 if (phba->fc_topology == LPFC_TOPOLOGY_LOOP && 1477 vport->fc_flag & FC_PUBLIC_LOOP && 1478 !(vport->fc_flag & FC_LBIT)) { 1479 /* Need to wait for FAN - use discovery timer 1480 * for timeout. port_state is identically 1481 * LPFC_LOCAL_CFG_LINK while waiting for FAN 1482 */ 1483 lpfc_set_disctmo(vport); 1484 return; 1485 } 1486 1487 /* Start discovery by sending a FLOGI. port_state is identically 1488 * LPFC_FLOGI while waiting for FLOGI cmpl. 1489 */ 1490 if (vport->port_state != LPFC_FLOGI) { 1491 /* Issue MBX_READ_SPARAM to update CSPs before FLOGI if 1492 * bb-credit recovery is in place. 1493 */ 1494 if (phba->bbcredit_support && phba->cfg_enable_bbcr && 1495 !(phba->link_flag & LS_LOOPBACK_MODE)) { 1496 sparam_mb = mempool_alloc(phba->mbox_mem_pool, 1497 GFP_KERNEL); 1498 if (!sparam_mb) 1499 goto sparam_out; 1500 1501 rc = lpfc_read_sparam(phba, sparam_mb, 0); 1502 if (rc) { 1503 mempool_free(sparam_mb, phba->mbox_mem_pool); 1504 goto sparam_out; 1505 } 1506 sparam_mb->vport = vport; 1507 sparam_mb->mbox_cmpl = lpfc_mbx_cmpl_read_sparam; 1508 rc = lpfc_sli_issue_mbox(phba, sparam_mb, MBX_NOWAIT); 1509 if (rc == MBX_NOT_FINISHED) { 1510 sparam_mp = (struct lpfc_dmabuf *) 1511 sparam_mb->ctx_buf; 1512 lpfc_mbuf_free(phba, sparam_mp->virt, 1513 sparam_mp->phys); 1514 kfree(sparam_mp); 1515 sparam_mb->ctx_buf = NULL; 1516 mempool_free(sparam_mb, phba->mbox_mem_pool); 1517 goto sparam_out; 1518 } 1519 1520 phba->hba_flag |= HBA_DEFER_FLOGI; 1521 } else { 1522 lpfc_initial_flogi(vport); 1523 } 1524 } else { 1525 if (vport->fc_flag & FC_PT2PT) 1526 lpfc_disc_start(vport); 1527 } 1528 return; 1529 1530 out: 1531 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 1532 "0306 CONFIG_LINK mbxStatus error x%x HBA state x%x\n", 1533 status, vport->port_state); 1534 1535 sparam_out: 1536 lpfc_linkdown(phba); 1537 1538 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 1539 "0200 CONFIG_LINK bad hba state x%x\n", 1540 vport->port_state); 1541 1542 lpfc_issue_clear_la(phba, vport); 1543 return; 1544 } 1545 1546 /** 1547 * lpfc_sli4_clear_fcf_rr_bmask 1548 * @phba: pointer to the struct lpfc_hba for this port. 1549 * This fucnction resets the round robin bit mask and clears the 1550 * fcf priority list. The list deletions are done while holding the 1551 * hbalock. The ON_LIST flag and the FLOGI_FAILED flags are cleared 1552 * from the lpfc_fcf_pri record. 1553 **/ 1554 void 1555 lpfc_sli4_clear_fcf_rr_bmask(struct lpfc_hba *phba) 1556 { 1557 struct lpfc_fcf_pri *fcf_pri; 1558 struct lpfc_fcf_pri *next_fcf_pri; 1559 memset(phba->fcf.fcf_rr_bmask, 0, sizeof(*phba->fcf.fcf_rr_bmask)); 1560 spin_lock_irq(&phba->hbalock); 1561 list_for_each_entry_safe(fcf_pri, next_fcf_pri, 1562 &phba->fcf.fcf_pri_list, list) { 1563 list_del_init(&fcf_pri->list); 1564 fcf_pri->fcf_rec.flag = 0; 1565 } 1566 spin_unlock_irq(&phba->hbalock); 1567 } 1568 static void 1569 lpfc_mbx_cmpl_reg_fcfi(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq) 1570 { 1571 struct lpfc_vport *vport = mboxq->vport; 1572 1573 if (mboxq->u.mb.mbxStatus) { 1574 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 1575 "2017 REG_FCFI mbxStatus error x%x " 1576 "HBA state x%x\n", mboxq->u.mb.mbxStatus, 1577 vport->port_state); 1578 goto fail_out; 1579 } 1580 1581 /* Start FCoE discovery by sending a FLOGI. */ 1582 phba->fcf.fcfi = bf_get(lpfc_reg_fcfi_fcfi, &mboxq->u.mqe.un.reg_fcfi); 1583 /* Set the FCFI registered flag */ 1584 spin_lock_irq(&phba->hbalock); 1585 phba->fcf.fcf_flag |= FCF_REGISTERED; 1586 spin_unlock_irq(&phba->hbalock); 1587 1588 /* If there is a pending FCoE event, restart FCF table scan. */ 1589 if ((!(phba->hba_flag & FCF_RR_INPROG)) && 1590 lpfc_check_pending_fcoe_event(phba, LPFC_UNREG_FCF)) 1591 goto fail_out; 1592 1593 /* Mark successful completion of FCF table scan */ 1594 spin_lock_irq(&phba->hbalock); 1595 phba->fcf.fcf_flag |= (FCF_SCAN_DONE | FCF_IN_USE); 1596 phba->hba_flag &= ~FCF_TS_INPROG; 1597 if (vport->port_state != LPFC_FLOGI) { 1598 phba->hba_flag |= FCF_RR_INPROG; 1599 spin_unlock_irq(&phba->hbalock); 1600 lpfc_issue_init_vfi(vport); 1601 goto out; 1602 } 1603 spin_unlock_irq(&phba->hbalock); 1604 goto out; 1605 1606 fail_out: 1607 spin_lock_irq(&phba->hbalock); 1608 phba->hba_flag &= ~FCF_RR_INPROG; 1609 spin_unlock_irq(&phba->hbalock); 1610 out: 1611 mempool_free(mboxq, phba->mbox_mem_pool); 1612 } 1613 1614 /** 1615 * lpfc_fab_name_match - Check if the fcf fabric name match. 1616 * @fab_name: pointer to fabric name. 1617 * @new_fcf_record: pointer to fcf record. 1618 * 1619 * This routine compare the fcf record's fabric name with provided 1620 * fabric name. If the fabric name are identical this function 1621 * returns 1 else return 0. 1622 **/ 1623 static uint32_t 1624 lpfc_fab_name_match(uint8_t *fab_name, struct fcf_record *new_fcf_record) 1625 { 1626 if (fab_name[0] != bf_get(lpfc_fcf_record_fab_name_0, new_fcf_record)) 1627 return 0; 1628 if (fab_name[1] != bf_get(lpfc_fcf_record_fab_name_1, new_fcf_record)) 1629 return 0; 1630 if (fab_name[2] != bf_get(lpfc_fcf_record_fab_name_2, new_fcf_record)) 1631 return 0; 1632 if (fab_name[3] != bf_get(lpfc_fcf_record_fab_name_3, new_fcf_record)) 1633 return 0; 1634 if (fab_name[4] != bf_get(lpfc_fcf_record_fab_name_4, new_fcf_record)) 1635 return 0; 1636 if (fab_name[5] != bf_get(lpfc_fcf_record_fab_name_5, new_fcf_record)) 1637 return 0; 1638 if (fab_name[6] != bf_get(lpfc_fcf_record_fab_name_6, new_fcf_record)) 1639 return 0; 1640 if (fab_name[7] != bf_get(lpfc_fcf_record_fab_name_7, new_fcf_record)) 1641 return 0; 1642 return 1; 1643 } 1644 1645 /** 1646 * lpfc_sw_name_match - Check if the fcf switch name match. 1647 * @sw_name: pointer to switch name. 1648 * @new_fcf_record: pointer to fcf record. 1649 * 1650 * This routine compare the fcf record's switch name with provided 1651 * switch name. If the switch name are identical this function 1652 * returns 1 else return 0. 1653 **/ 1654 static uint32_t 1655 lpfc_sw_name_match(uint8_t *sw_name, struct fcf_record *new_fcf_record) 1656 { 1657 if (sw_name[0] != bf_get(lpfc_fcf_record_switch_name_0, new_fcf_record)) 1658 return 0; 1659 if (sw_name[1] != bf_get(lpfc_fcf_record_switch_name_1, new_fcf_record)) 1660 return 0; 1661 if (sw_name[2] != bf_get(lpfc_fcf_record_switch_name_2, new_fcf_record)) 1662 return 0; 1663 if (sw_name[3] != bf_get(lpfc_fcf_record_switch_name_3, new_fcf_record)) 1664 return 0; 1665 if (sw_name[4] != bf_get(lpfc_fcf_record_switch_name_4, new_fcf_record)) 1666 return 0; 1667 if (sw_name[5] != bf_get(lpfc_fcf_record_switch_name_5, new_fcf_record)) 1668 return 0; 1669 if (sw_name[6] != bf_get(lpfc_fcf_record_switch_name_6, new_fcf_record)) 1670 return 0; 1671 if (sw_name[7] != bf_get(lpfc_fcf_record_switch_name_7, new_fcf_record)) 1672 return 0; 1673 return 1; 1674 } 1675 1676 /** 1677 * lpfc_mac_addr_match - Check if the fcf mac address match. 1678 * @mac_addr: pointer to mac address. 1679 * @new_fcf_record: pointer to fcf record. 1680 * 1681 * This routine compare the fcf record's mac address with HBA's 1682 * FCF mac address. If the mac addresses are identical this function 1683 * returns 1 else return 0. 1684 **/ 1685 static uint32_t 1686 lpfc_mac_addr_match(uint8_t *mac_addr, struct fcf_record *new_fcf_record) 1687 { 1688 if (mac_addr[0] != bf_get(lpfc_fcf_record_mac_0, new_fcf_record)) 1689 return 0; 1690 if (mac_addr[1] != bf_get(lpfc_fcf_record_mac_1, new_fcf_record)) 1691 return 0; 1692 if (mac_addr[2] != bf_get(lpfc_fcf_record_mac_2, new_fcf_record)) 1693 return 0; 1694 if (mac_addr[3] != bf_get(lpfc_fcf_record_mac_3, new_fcf_record)) 1695 return 0; 1696 if (mac_addr[4] != bf_get(lpfc_fcf_record_mac_4, new_fcf_record)) 1697 return 0; 1698 if (mac_addr[5] != bf_get(lpfc_fcf_record_mac_5, new_fcf_record)) 1699 return 0; 1700 return 1; 1701 } 1702 1703 static bool 1704 lpfc_vlan_id_match(uint16_t curr_vlan_id, uint16_t new_vlan_id) 1705 { 1706 return (curr_vlan_id == new_vlan_id); 1707 } 1708 1709 /** 1710 * __lpfc_update_fcf_record_pri - update the lpfc_fcf_pri record. 1711 * @phba: pointer to lpfc hba data structure. 1712 * @fcf_index: Index for the lpfc_fcf_record. 1713 * @new_fcf_record: pointer to hba fcf record. 1714 * 1715 * This routine updates the driver FCF priority record from the new HBA FCF 1716 * record. The hbalock is asserted held in the code path calling this 1717 * routine. 1718 **/ 1719 static void 1720 __lpfc_update_fcf_record_pri(struct lpfc_hba *phba, uint16_t fcf_index, 1721 struct fcf_record *new_fcf_record 1722 ) 1723 { 1724 struct lpfc_fcf_pri *fcf_pri; 1725 1726 fcf_pri = &phba->fcf.fcf_pri[fcf_index]; 1727 fcf_pri->fcf_rec.fcf_index = fcf_index; 1728 /* FCF record priority */ 1729 fcf_pri->fcf_rec.priority = new_fcf_record->fip_priority; 1730 1731 } 1732 1733 /** 1734 * lpfc_copy_fcf_record - Copy fcf information to lpfc_hba. 1735 * @fcf_rec: pointer to driver fcf record. 1736 * @new_fcf_record: pointer to fcf record. 1737 * 1738 * This routine copies the FCF information from the FCF 1739 * record to lpfc_hba data structure. 1740 **/ 1741 static void 1742 lpfc_copy_fcf_record(struct lpfc_fcf_rec *fcf_rec, 1743 struct fcf_record *new_fcf_record) 1744 { 1745 /* Fabric name */ 1746 fcf_rec->fabric_name[0] = 1747 bf_get(lpfc_fcf_record_fab_name_0, new_fcf_record); 1748 fcf_rec->fabric_name[1] = 1749 bf_get(lpfc_fcf_record_fab_name_1, new_fcf_record); 1750 fcf_rec->fabric_name[2] = 1751 bf_get(lpfc_fcf_record_fab_name_2, new_fcf_record); 1752 fcf_rec->fabric_name[3] = 1753 bf_get(lpfc_fcf_record_fab_name_3, new_fcf_record); 1754 fcf_rec->fabric_name[4] = 1755 bf_get(lpfc_fcf_record_fab_name_4, new_fcf_record); 1756 fcf_rec->fabric_name[5] = 1757 bf_get(lpfc_fcf_record_fab_name_5, new_fcf_record); 1758 fcf_rec->fabric_name[6] = 1759 bf_get(lpfc_fcf_record_fab_name_6, new_fcf_record); 1760 fcf_rec->fabric_name[7] = 1761 bf_get(lpfc_fcf_record_fab_name_7, new_fcf_record); 1762 /* Mac address */ 1763 fcf_rec->mac_addr[0] = bf_get(lpfc_fcf_record_mac_0, new_fcf_record); 1764 fcf_rec->mac_addr[1] = bf_get(lpfc_fcf_record_mac_1, new_fcf_record); 1765 fcf_rec->mac_addr[2] = bf_get(lpfc_fcf_record_mac_2, new_fcf_record); 1766 fcf_rec->mac_addr[3] = bf_get(lpfc_fcf_record_mac_3, new_fcf_record); 1767 fcf_rec->mac_addr[4] = bf_get(lpfc_fcf_record_mac_4, new_fcf_record); 1768 fcf_rec->mac_addr[5] = bf_get(lpfc_fcf_record_mac_5, new_fcf_record); 1769 /* FCF record index */ 1770 fcf_rec->fcf_indx = bf_get(lpfc_fcf_record_fcf_index, new_fcf_record); 1771 /* FCF record priority */ 1772 fcf_rec->priority = new_fcf_record->fip_priority; 1773 /* Switch name */ 1774 fcf_rec->switch_name[0] = 1775 bf_get(lpfc_fcf_record_switch_name_0, new_fcf_record); 1776 fcf_rec->switch_name[1] = 1777 bf_get(lpfc_fcf_record_switch_name_1, new_fcf_record); 1778 fcf_rec->switch_name[2] = 1779 bf_get(lpfc_fcf_record_switch_name_2, new_fcf_record); 1780 fcf_rec->switch_name[3] = 1781 bf_get(lpfc_fcf_record_switch_name_3, new_fcf_record); 1782 fcf_rec->switch_name[4] = 1783 bf_get(lpfc_fcf_record_switch_name_4, new_fcf_record); 1784 fcf_rec->switch_name[5] = 1785 bf_get(lpfc_fcf_record_switch_name_5, new_fcf_record); 1786 fcf_rec->switch_name[6] = 1787 bf_get(lpfc_fcf_record_switch_name_6, new_fcf_record); 1788 fcf_rec->switch_name[7] = 1789 bf_get(lpfc_fcf_record_switch_name_7, new_fcf_record); 1790 } 1791 1792 /** 1793 * __lpfc_update_fcf_record - Update driver fcf record 1794 * @phba: pointer to lpfc hba data structure. 1795 * @fcf_rec: pointer to driver fcf record. 1796 * @new_fcf_record: pointer to hba fcf record. 1797 * @addr_mode: address mode to be set to the driver fcf record. 1798 * @vlan_id: vlan tag to be set to the driver fcf record. 1799 * @flag: flag bits to be set to the driver fcf record. 1800 * 1801 * This routine updates the driver FCF record from the new HBA FCF record 1802 * together with the address mode, vlan_id, and other informations. This 1803 * routine is called with the hbalock held. 1804 **/ 1805 static void 1806 __lpfc_update_fcf_record(struct lpfc_hba *phba, struct lpfc_fcf_rec *fcf_rec, 1807 struct fcf_record *new_fcf_record, uint32_t addr_mode, 1808 uint16_t vlan_id, uint32_t flag) 1809 { 1810 lockdep_assert_held(&phba->hbalock); 1811 1812 /* Copy the fields from the HBA's FCF record */ 1813 lpfc_copy_fcf_record(fcf_rec, new_fcf_record); 1814 /* Update other fields of driver FCF record */ 1815 fcf_rec->addr_mode = addr_mode; 1816 fcf_rec->vlan_id = vlan_id; 1817 fcf_rec->flag |= (flag | RECORD_VALID); 1818 __lpfc_update_fcf_record_pri(phba, 1819 bf_get(lpfc_fcf_record_fcf_index, new_fcf_record), 1820 new_fcf_record); 1821 } 1822 1823 /** 1824 * lpfc_register_fcf - Register the FCF with hba. 1825 * @phba: pointer to lpfc hba data structure. 1826 * 1827 * This routine issues a register fcfi mailbox command to register 1828 * the fcf with HBA. 1829 **/ 1830 static void 1831 lpfc_register_fcf(struct lpfc_hba *phba) 1832 { 1833 LPFC_MBOXQ_t *fcf_mbxq; 1834 int rc; 1835 1836 spin_lock_irq(&phba->hbalock); 1837 /* If the FCF is not available do nothing. */ 1838 if (!(phba->fcf.fcf_flag & FCF_AVAILABLE)) { 1839 phba->hba_flag &= ~(FCF_TS_INPROG | FCF_RR_INPROG); 1840 spin_unlock_irq(&phba->hbalock); 1841 return; 1842 } 1843 1844 /* The FCF is already registered, start discovery */ 1845 if (phba->fcf.fcf_flag & FCF_REGISTERED) { 1846 phba->fcf.fcf_flag |= (FCF_SCAN_DONE | FCF_IN_USE); 1847 phba->hba_flag &= ~FCF_TS_INPROG; 1848 if (phba->pport->port_state != LPFC_FLOGI && 1849 phba->pport->fc_flag & FC_FABRIC) { 1850 phba->hba_flag |= FCF_RR_INPROG; 1851 spin_unlock_irq(&phba->hbalock); 1852 lpfc_initial_flogi(phba->pport); 1853 return; 1854 } 1855 spin_unlock_irq(&phba->hbalock); 1856 return; 1857 } 1858 spin_unlock_irq(&phba->hbalock); 1859 1860 fcf_mbxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 1861 if (!fcf_mbxq) { 1862 spin_lock_irq(&phba->hbalock); 1863 phba->hba_flag &= ~(FCF_TS_INPROG | FCF_RR_INPROG); 1864 spin_unlock_irq(&phba->hbalock); 1865 return; 1866 } 1867 1868 lpfc_reg_fcfi(phba, fcf_mbxq); 1869 fcf_mbxq->vport = phba->pport; 1870 fcf_mbxq->mbox_cmpl = lpfc_mbx_cmpl_reg_fcfi; 1871 rc = lpfc_sli_issue_mbox(phba, fcf_mbxq, MBX_NOWAIT); 1872 if (rc == MBX_NOT_FINISHED) { 1873 spin_lock_irq(&phba->hbalock); 1874 phba->hba_flag &= ~(FCF_TS_INPROG | FCF_RR_INPROG); 1875 spin_unlock_irq(&phba->hbalock); 1876 mempool_free(fcf_mbxq, phba->mbox_mem_pool); 1877 } 1878 1879 return; 1880 } 1881 1882 /** 1883 * lpfc_match_fcf_conn_list - Check if the FCF record can be used for discovery. 1884 * @phba: pointer to lpfc hba data structure. 1885 * @new_fcf_record: pointer to fcf record. 1886 * @boot_flag: Indicates if this record used by boot bios. 1887 * @addr_mode: The address mode to be used by this FCF 1888 * @vlan_id: The vlan id to be used as vlan tagging by this FCF. 1889 * 1890 * This routine compare the fcf record with connect list obtained from the 1891 * config region to decide if this FCF can be used for SAN discovery. It returns 1892 * 1 if this record can be used for SAN discovery else return zero. If this FCF 1893 * record can be used for SAN discovery, the boot_flag will indicate if this FCF 1894 * is used by boot bios and addr_mode will indicate the addressing mode to be 1895 * used for this FCF when the function returns. 1896 * If the FCF record need to be used with a particular vlan id, the vlan is 1897 * set in the vlan_id on return of the function. If not VLAN tagging need to 1898 * be used with the FCF vlan_id will be set to LPFC_FCOE_NULL_VID; 1899 **/ 1900 static int 1901 lpfc_match_fcf_conn_list(struct lpfc_hba *phba, 1902 struct fcf_record *new_fcf_record, 1903 uint32_t *boot_flag, uint32_t *addr_mode, 1904 uint16_t *vlan_id) 1905 { 1906 struct lpfc_fcf_conn_entry *conn_entry; 1907 int i, j, fcf_vlan_id = 0; 1908 1909 /* Find the lowest VLAN id in the FCF record */ 1910 for (i = 0; i < 512; i++) { 1911 if (new_fcf_record->vlan_bitmap[i]) { 1912 fcf_vlan_id = i * 8; 1913 j = 0; 1914 while (!((new_fcf_record->vlan_bitmap[i] >> j) & 1)) { 1915 j++; 1916 fcf_vlan_id++; 1917 } 1918 break; 1919 } 1920 } 1921 1922 /* FCF not valid/available or solicitation in progress */ 1923 if (!bf_get(lpfc_fcf_record_fcf_avail, new_fcf_record) || 1924 !bf_get(lpfc_fcf_record_fcf_valid, new_fcf_record) || 1925 bf_get(lpfc_fcf_record_fcf_sol, new_fcf_record)) 1926 return 0; 1927 1928 if (!(phba->hba_flag & HBA_FIP_SUPPORT)) { 1929 *boot_flag = 0; 1930 *addr_mode = bf_get(lpfc_fcf_record_mac_addr_prov, 1931 new_fcf_record); 1932 if (phba->valid_vlan) 1933 *vlan_id = phba->vlan_id; 1934 else 1935 *vlan_id = LPFC_FCOE_NULL_VID; 1936 return 1; 1937 } 1938 1939 /* 1940 * If there are no FCF connection table entry, driver connect to all 1941 * FCFs. 1942 */ 1943 if (list_empty(&phba->fcf_conn_rec_list)) { 1944 *boot_flag = 0; 1945 *addr_mode = bf_get(lpfc_fcf_record_mac_addr_prov, 1946 new_fcf_record); 1947 1948 /* 1949 * When there are no FCF connect entries, use driver's default 1950 * addressing mode - FPMA. 1951 */ 1952 if (*addr_mode & LPFC_FCF_FPMA) 1953 *addr_mode = LPFC_FCF_FPMA; 1954 1955 /* If FCF record report a vlan id use that vlan id */ 1956 if (fcf_vlan_id) 1957 *vlan_id = fcf_vlan_id; 1958 else 1959 *vlan_id = LPFC_FCOE_NULL_VID; 1960 return 1; 1961 } 1962 1963 list_for_each_entry(conn_entry, 1964 &phba->fcf_conn_rec_list, list) { 1965 if (!(conn_entry->conn_rec.flags & FCFCNCT_VALID)) 1966 continue; 1967 1968 if ((conn_entry->conn_rec.flags & FCFCNCT_FBNM_VALID) && 1969 !lpfc_fab_name_match(conn_entry->conn_rec.fabric_name, 1970 new_fcf_record)) 1971 continue; 1972 if ((conn_entry->conn_rec.flags & FCFCNCT_SWNM_VALID) && 1973 !lpfc_sw_name_match(conn_entry->conn_rec.switch_name, 1974 new_fcf_record)) 1975 continue; 1976 if (conn_entry->conn_rec.flags & FCFCNCT_VLAN_VALID) { 1977 /* 1978 * If the vlan bit map does not have the bit set for the 1979 * vlan id to be used, then it is not a match. 1980 */ 1981 if (!(new_fcf_record->vlan_bitmap 1982 [conn_entry->conn_rec.vlan_tag / 8] & 1983 (1 << (conn_entry->conn_rec.vlan_tag % 8)))) 1984 continue; 1985 } 1986 1987 /* 1988 * If connection record does not support any addressing mode, 1989 * skip the FCF record. 1990 */ 1991 if (!(bf_get(lpfc_fcf_record_mac_addr_prov, new_fcf_record) 1992 & (LPFC_FCF_FPMA | LPFC_FCF_SPMA))) 1993 continue; 1994 1995 /* 1996 * Check if the connection record specifies a required 1997 * addressing mode. 1998 */ 1999 if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) && 2000 !(conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED)) { 2001 2002 /* 2003 * If SPMA required but FCF not support this continue. 2004 */ 2005 if ((conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) && 2006 !(bf_get(lpfc_fcf_record_mac_addr_prov, 2007 new_fcf_record) & LPFC_FCF_SPMA)) 2008 continue; 2009 2010 /* 2011 * If FPMA required but FCF not support this continue. 2012 */ 2013 if (!(conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) && 2014 !(bf_get(lpfc_fcf_record_mac_addr_prov, 2015 new_fcf_record) & LPFC_FCF_FPMA)) 2016 continue; 2017 } 2018 2019 /* 2020 * This fcf record matches filtering criteria. 2021 */ 2022 if (conn_entry->conn_rec.flags & FCFCNCT_BOOT) 2023 *boot_flag = 1; 2024 else 2025 *boot_flag = 0; 2026 2027 /* 2028 * If user did not specify any addressing mode, or if the 2029 * preferred addressing mode specified by user is not supported 2030 * by FCF, allow fabric to pick the addressing mode. 2031 */ 2032 *addr_mode = bf_get(lpfc_fcf_record_mac_addr_prov, 2033 new_fcf_record); 2034 /* 2035 * If the user specified a required address mode, assign that 2036 * address mode 2037 */ 2038 if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) && 2039 (!(conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED))) 2040 *addr_mode = (conn_entry->conn_rec.flags & 2041 FCFCNCT_AM_SPMA) ? 2042 LPFC_FCF_SPMA : LPFC_FCF_FPMA; 2043 /* 2044 * If the user specified a preferred address mode, use the 2045 * addr mode only if FCF support the addr_mode. 2046 */ 2047 else if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) && 2048 (conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED) && 2049 (conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) && 2050 (*addr_mode & LPFC_FCF_SPMA)) 2051 *addr_mode = LPFC_FCF_SPMA; 2052 else if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) && 2053 (conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED) && 2054 !(conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) && 2055 (*addr_mode & LPFC_FCF_FPMA)) 2056 *addr_mode = LPFC_FCF_FPMA; 2057 2058 /* If matching connect list has a vlan id, use it */ 2059 if (conn_entry->conn_rec.flags & FCFCNCT_VLAN_VALID) 2060 *vlan_id = conn_entry->conn_rec.vlan_tag; 2061 /* 2062 * If no vlan id is specified in connect list, use the vlan id 2063 * in the FCF record 2064 */ 2065 else if (fcf_vlan_id) 2066 *vlan_id = fcf_vlan_id; 2067 else 2068 *vlan_id = LPFC_FCOE_NULL_VID; 2069 2070 return 1; 2071 } 2072 2073 return 0; 2074 } 2075 2076 /** 2077 * lpfc_check_pending_fcoe_event - Check if there is pending fcoe event. 2078 * @phba: pointer to lpfc hba data structure. 2079 * @unreg_fcf: Unregister FCF if FCF table need to be re-scaned. 2080 * 2081 * This function check if there is any fcoe event pending while driver 2082 * scan FCF entries. If there is any pending event, it will restart the 2083 * FCF saning and return 1 else return 0. 2084 */ 2085 int 2086 lpfc_check_pending_fcoe_event(struct lpfc_hba *phba, uint8_t unreg_fcf) 2087 { 2088 /* 2089 * If the Link is up and no FCoE events while in the 2090 * FCF discovery, no need to restart FCF discovery. 2091 */ 2092 if ((phba->link_state >= LPFC_LINK_UP) && 2093 (phba->fcoe_eventtag == phba->fcoe_eventtag_at_fcf_scan)) 2094 return 0; 2095 2096 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2097 "2768 Pending link or FCF event during current " 2098 "handling of the previous event: link_state:x%x, " 2099 "evt_tag_at_scan:x%x, evt_tag_current:x%x\n", 2100 phba->link_state, phba->fcoe_eventtag_at_fcf_scan, 2101 phba->fcoe_eventtag); 2102 2103 spin_lock_irq(&phba->hbalock); 2104 phba->fcf.fcf_flag &= ~FCF_AVAILABLE; 2105 spin_unlock_irq(&phba->hbalock); 2106 2107 if (phba->link_state >= LPFC_LINK_UP) { 2108 lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY, 2109 "2780 Restart FCF table scan due to " 2110 "pending FCF event:evt_tag_at_scan:x%x, " 2111 "evt_tag_current:x%x\n", 2112 phba->fcoe_eventtag_at_fcf_scan, 2113 phba->fcoe_eventtag); 2114 lpfc_sli4_fcf_scan_read_fcf_rec(phba, LPFC_FCOE_FCF_GET_FIRST); 2115 } else { 2116 /* 2117 * Do not continue FCF discovery and clear FCF_TS_INPROG 2118 * flag 2119 */ 2120 lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY, 2121 "2833 Stop FCF discovery process due to link " 2122 "state change (x%x)\n", phba->link_state); 2123 spin_lock_irq(&phba->hbalock); 2124 phba->hba_flag &= ~(FCF_TS_INPROG | FCF_RR_INPROG); 2125 phba->fcf.fcf_flag &= ~(FCF_REDISC_FOV | FCF_DISCOVERY); 2126 spin_unlock_irq(&phba->hbalock); 2127 } 2128 2129 /* Unregister the currently registered FCF if required */ 2130 if (unreg_fcf) { 2131 spin_lock_irq(&phba->hbalock); 2132 phba->fcf.fcf_flag &= ~FCF_REGISTERED; 2133 spin_unlock_irq(&phba->hbalock); 2134 lpfc_sli4_unregister_fcf(phba); 2135 } 2136 return 1; 2137 } 2138 2139 /** 2140 * lpfc_sli4_new_fcf_random_select - Randomly select an eligible new fcf record 2141 * @phba: pointer to lpfc hba data structure. 2142 * @fcf_cnt: number of eligible fcf record seen so far. 2143 * 2144 * This function makes an running random selection decision on FCF record to 2145 * use through a sequence of @fcf_cnt eligible FCF records with equal 2146 * probability. To perform integer manunipulation of random numbers with 2147 * size unit32_t, the lower 16 bits of the 32-bit random number returned 2148 * from prandom_u32() are taken as the random random number generated. 2149 * 2150 * Returns true when outcome is for the newly read FCF record should be 2151 * chosen; otherwise, return false when outcome is for keeping the previously 2152 * chosen FCF record. 2153 **/ 2154 static bool 2155 lpfc_sli4_new_fcf_random_select(struct lpfc_hba *phba, uint32_t fcf_cnt) 2156 { 2157 uint32_t rand_num; 2158 2159 /* Get 16-bit uniform random number */ 2160 rand_num = 0xFFFF & prandom_u32(); 2161 2162 /* Decision with probability 1/fcf_cnt */ 2163 if ((fcf_cnt * rand_num) < 0xFFFF) 2164 return true; 2165 else 2166 return false; 2167 } 2168 2169 /** 2170 * lpfc_sli4_fcf_rec_mbox_parse - Parse read_fcf mbox command. 2171 * @phba: pointer to lpfc hba data structure. 2172 * @mboxq: pointer to mailbox object. 2173 * @next_fcf_index: pointer to holder of next fcf index. 2174 * 2175 * This routine parses the non-embedded fcf mailbox command by performing the 2176 * necessarily error checking, non-embedded read FCF record mailbox command 2177 * SGE parsing, and endianness swapping. 2178 * 2179 * Returns the pointer to the new FCF record in the non-embedded mailbox 2180 * command DMA memory if successfully, other NULL. 2181 */ 2182 static struct fcf_record * 2183 lpfc_sli4_fcf_rec_mbox_parse(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq, 2184 uint16_t *next_fcf_index) 2185 { 2186 void *virt_addr; 2187 struct lpfc_mbx_sge sge; 2188 struct lpfc_mbx_read_fcf_tbl *read_fcf; 2189 uint32_t shdr_status, shdr_add_status, if_type; 2190 union lpfc_sli4_cfg_shdr *shdr; 2191 struct fcf_record *new_fcf_record; 2192 2193 /* Get the first SGE entry from the non-embedded DMA memory. This 2194 * routine only uses a single SGE. 2195 */ 2196 lpfc_sli4_mbx_sge_get(mboxq, 0, &sge); 2197 if (unlikely(!mboxq->sge_array)) { 2198 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 2199 "2524 Failed to get the non-embedded SGE " 2200 "virtual address\n"); 2201 return NULL; 2202 } 2203 virt_addr = mboxq->sge_array->addr[0]; 2204 2205 shdr = (union lpfc_sli4_cfg_shdr *)virt_addr; 2206 lpfc_sli_pcimem_bcopy(shdr, shdr, 2207 sizeof(union lpfc_sli4_cfg_shdr)); 2208 shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response); 2209 if_type = bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf); 2210 shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response); 2211 if (shdr_status || shdr_add_status) { 2212 if (shdr_status == STATUS_FCF_TABLE_EMPTY || 2213 if_type == LPFC_SLI_INTF_IF_TYPE_2) 2214 lpfc_printf_log(phba, KERN_ERR, 2215 LOG_TRACE_EVENT, 2216 "2726 READ_FCF_RECORD Indicates empty " 2217 "FCF table.\n"); 2218 else 2219 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 2220 "2521 READ_FCF_RECORD mailbox failed " 2221 "with status x%x add_status x%x, " 2222 "mbx\n", shdr_status, shdr_add_status); 2223 return NULL; 2224 } 2225 2226 /* Interpreting the returned information of the FCF record */ 2227 read_fcf = (struct lpfc_mbx_read_fcf_tbl *)virt_addr; 2228 lpfc_sli_pcimem_bcopy(read_fcf, read_fcf, 2229 sizeof(struct lpfc_mbx_read_fcf_tbl)); 2230 *next_fcf_index = bf_get(lpfc_mbx_read_fcf_tbl_nxt_vindx, read_fcf); 2231 new_fcf_record = (struct fcf_record *)(virt_addr + 2232 sizeof(struct lpfc_mbx_read_fcf_tbl)); 2233 lpfc_sli_pcimem_bcopy(new_fcf_record, new_fcf_record, 2234 offsetof(struct fcf_record, vlan_bitmap)); 2235 new_fcf_record->word137 = le32_to_cpu(new_fcf_record->word137); 2236 new_fcf_record->word138 = le32_to_cpu(new_fcf_record->word138); 2237 2238 return new_fcf_record; 2239 } 2240 2241 /** 2242 * lpfc_sli4_log_fcf_record_info - Log the information of a fcf record 2243 * @phba: pointer to lpfc hba data structure. 2244 * @fcf_record: pointer to the fcf record. 2245 * @vlan_id: the lowest vlan identifier associated to this fcf record. 2246 * @next_fcf_index: the index to the next fcf record in hba's fcf table. 2247 * 2248 * This routine logs the detailed FCF record if the LOG_FIP loggin is 2249 * enabled. 2250 **/ 2251 static void 2252 lpfc_sli4_log_fcf_record_info(struct lpfc_hba *phba, 2253 struct fcf_record *fcf_record, 2254 uint16_t vlan_id, 2255 uint16_t next_fcf_index) 2256 { 2257 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2258 "2764 READ_FCF_RECORD:\n" 2259 "\tFCF_Index : x%x\n" 2260 "\tFCF_Avail : x%x\n" 2261 "\tFCF_Valid : x%x\n" 2262 "\tFCF_SOL : x%x\n" 2263 "\tFIP_Priority : x%x\n" 2264 "\tMAC_Provider : x%x\n" 2265 "\tLowest VLANID : x%x\n" 2266 "\tFCF_MAC Addr : x%x:%x:%x:%x:%x:%x\n" 2267 "\tFabric_Name : x%x:%x:%x:%x:%x:%x:%x:%x\n" 2268 "\tSwitch_Name : x%x:%x:%x:%x:%x:%x:%x:%x\n" 2269 "\tNext_FCF_Index: x%x\n", 2270 bf_get(lpfc_fcf_record_fcf_index, fcf_record), 2271 bf_get(lpfc_fcf_record_fcf_avail, fcf_record), 2272 bf_get(lpfc_fcf_record_fcf_valid, fcf_record), 2273 bf_get(lpfc_fcf_record_fcf_sol, fcf_record), 2274 fcf_record->fip_priority, 2275 bf_get(lpfc_fcf_record_mac_addr_prov, fcf_record), 2276 vlan_id, 2277 bf_get(lpfc_fcf_record_mac_0, fcf_record), 2278 bf_get(lpfc_fcf_record_mac_1, fcf_record), 2279 bf_get(lpfc_fcf_record_mac_2, fcf_record), 2280 bf_get(lpfc_fcf_record_mac_3, fcf_record), 2281 bf_get(lpfc_fcf_record_mac_4, fcf_record), 2282 bf_get(lpfc_fcf_record_mac_5, fcf_record), 2283 bf_get(lpfc_fcf_record_fab_name_0, fcf_record), 2284 bf_get(lpfc_fcf_record_fab_name_1, fcf_record), 2285 bf_get(lpfc_fcf_record_fab_name_2, fcf_record), 2286 bf_get(lpfc_fcf_record_fab_name_3, fcf_record), 2287 bf_get(lpfc_fcf_record_fab_name_4, fcf_record), 2288 bf_get(lpfc_fcf_record_fab_name_5, fcf_record), 2289 bf_get(lpfc_fcf_record_fab_name_6, fcf_record), 2290 bf_get(lpfc_fcf_record_fab_name_7, fcf_record), 2291 bf_get(lpfc_fcf_record_switch_name_0, fcf_record), 2292 bf_get(lpfc_fcf_record_switch_name_1, fcf_record), 2293 bf_get(lpfc_fcf_record_switch_name_2, fcf_record), 2294 bf_get(lpfc_fcf_record_switch_name_3, fcf_record), 2295 bf_get(lpfc_fcf_record_switch_name_4, fcf_record), 2296 bf_get(lpfc_fcf_record_switch_name_5, fcf_record), 2297 bf_get(lpfc_fcf_record_switch_name_6, fcf_record), 2298 bf_get(lpfc_fcf_record_switch_name_7, fcf_record), 2299 next_fcf_index); 2300 } 2301 2302 /** 2303 * lpfc_sli4_fcf_record_match - testing new FCF record for matching existing FCF 2304 * @phba: pointer to lpfc hba data structure. 2305 * @fcf_rec: pointer to an existing FCF record. 2306 * @new_fcf_record: pointer to a new FCF record. 2307 * @new_vlan_id: vlan id from the new FCF record. 2308 * 2309 * This function performs matching test of a new FCF record against an existing 2310 * FCF record. If the new_vlan_id passed in is LPFC_FCOE_IGNORE_VID, vlan id 2311 * will not be used as part of the FCF record matching criteria. 2312 * 2313 * Returns true if all the fields matching, otherwise returns false. 2314 */ 2315 static bool 2316 lpfc_sli4_fcf_record_match(struct lpfc_hba *phba, 2317 struct lpfc_fcf_rec *fcf_rec, 2318 struct fcf_record *new_fcf_record, 2319 uint16_t new_vlan_id) 2320 { 2321 if (new_vlan_id != LPFC_FCOE_IGNORE_VID) 2322 if (!lpfc_vlan_id_match(fcf_rec->vlan_id, new_vlan_id)) 2323 return false; 2324 if (!lpfc_mac_addr_match(fcf_rec->mac_addr, new_fcf_record)) 2325 return false; 2326 if (!lpfc_sw_name_match(fcf_rec->switch_name, new_fcf_record)) 2327 return false; 2328 if (!lpfc_fab_name_match(fcf_rec->fabric_name, new_fcf_record)) 2329 return false; 2330 if (fcf_rec->priority != new_fcf_record->fip_priority) 2331 return false; 2332 return true; 2333 } 2334 2335 /** 2336 * lpfc_sli4_fcf_rr_next_proc - processing next roundrobin fcf 2337 * @vport: Pointer to vport object. 2338 * @fcf_index: index to next fcf. 2339 * 2340 * This function processing the roundrobin fcf failover to next fcf index. 2341 * When this function is invoked, there will be a current fcf registered 2342 * for flogi. 2343 * Return: 0 for continue retrying flogi on currently registered fcf; 2344 * 1 for stop flogi on currently registered fcf; 2345 */ 2346 int lpfc_sli4_fcf_rr_next_proc(struct lpfc_vport *vport, uint16_t fcf_index) 2347 { 2348 struct lpfc_hba *phba = vport->phba; 2349 int rc; 2350 2351 if (fcf_index == LPFC_FCOE_FCF_NEXT_NONE) { 2352 spin_lock_irq(&phba->hbalock); 2353 if (phba->hba_flag & HBA_DEVLOSS_TMO) { 2354 spin_unlock_irq(&phba->hbalock); 2355 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2356 "2872 Devloss tmo with no eligible " 2357 "FCF, unregister in-use FCF (x%x) " 2358 "and rescan FCF table\n", 2359 phba->fcf.current_rec.fcf_indx); 2360 lpfc_unregister_fcf_rescan(phba); 2361 goto stop_flogi_current_fcf; 2362 } 2363 /* Mark the end to FLOGI roundrobin failover */ 2364 phba->hba_flag &= ~FCF_RR_INPROG; 2365 /* Allow action to new fcf asynchronous event */ 2366 phba->fcf.fcf_flag &= ~(FCF_AVAILABLE | FCF_SCAN_DONE); 2367 spin_unlock_irq(&phba->hbalock); 2368 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2369 "2865 No FCF available, stop roundrobin FCF " 2370 "failover and change port state:x%x/x%x\n", 2371 phba->pport->port_state, LPFC_VPORT_UNKNOWN); 2372 phba->pport->port_state = LPFC_VPORT_UNKNOWN; 2373 2374 if (!phba->fcf.fcf_redisc_attempted) { 2375 lpfc_unregister_fcf(phba); 2376 2377 rc = lpfc_sli4_redisc_fcf_table(phba); 2378 if (!rc) { 2379 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2380 "3195 Rediscover FCF table\n"); 2381 phba->fcf.fcf_redisc_attempted = 1; 2382 lpfc_sli4_clear_fcf_rr_bmask(phba); 2383 } else { 2384 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP, 2385 "3196 Rediscover FCF table " 2386 "failed. Status:x%x\n", rc); 2387 } 2388 } else { 2389 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP, 2390 "3197 Already rediscover FCF table " 2391 "attempted. No more retry\n"); 2392 } 2393 goto stop_flogi_current_fcf; 2394 } else { 2395 lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_ELS, 2396 "2794 Try FLOGI roundrobin FCF failover to " 2397 "(x%x)\n", fcf_index); 2398 rc = lpfc_sli4_fcf_rr_read_fcf_rec(phba, fcf_index); 2399 if (rc) 2400 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP | LOG_ELS, 2401 "2761 FLOGI roundrobin FCF failover " 2402 "failed (rc:x%x) to read FCF (x%x)\n", 2403 rc, phba->fcf.current_rec.fcf_indx); 2404 else 2405 goto stop_flogi_current_fcf; 2406 } 2407 return 0; 2408 2409 stop_flogi_current_fcf: 2410 lpfc_can_disctmo(vport); 2411 return 1; 2412 } 2413 2414 /** 2415 * lpfc_sli4_fcf_pri_list_del 2416 * @phba: pointer to lpfc hba data structure. 2417 * @fcf_index: the index of the fcf record to delete 2418 * This routine checks the on list flag of the fcf_index to be deleted. 2419 * If it is one the list then it is removed from the list, and the flag 2420 * is cleared. This routine grab the hbalock before removing the fcf 2421 * record from the list. 2422 **/ 2423 static void lpfc_sli4_fcf_pri_list_del(struct lpfc_hba *phba, 2424 uint16_t fcf_index) 2425 { 2426 struct lpfc_fcf_pri *new_fcf_pri; 2427 2428 new_fcf_pri = &phba->fcf.fcf_pri[fcf_index]; 2429 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2430 "3058 deleting idx x%x pri x%x flg x%x\n", 2431 fcf_index, new_fcf_pri->fcf_rec.priority, 2432 new_fcf_pri->fcf_rec.flag); 2433 spin_lock_irq(&phba->hbalock); 2434 if (new_fcf_pri->fcf_rec.flag & LPFC_FCF_ON_PRI_LIST) { 2435 if (phba->fcf.current_rec.priority == 2436 new_fcf_pri->fcf_rec.priority) 2437 phba->fcf.eligible_fcf_cnt--; 2438 list_del_init(&new_fcf_pri->list); 2439 new_fcf_pri->fcf_rec.flag &= ~LPFC_FCF_ON_PRI_LIST; 2440 } 2441 spin_unlock_irq(&phba->hbalock); 2442 } 2443 2444 /** 2445 * lpfc_sli4_set_fcf_flogi_fail 2446 * @phba: pointer to lpfc hba data structure. 2447 * @fcf_index: the index of the fcf record to update 2448 * This routine acquires the hbalock and then set the LPFC_FCF_FLOGI_FAILED 2449 * flag so the the round robin slection for the particular priority level 2450 * will try a different fcf record that does not have this bit set. 2451 * If the fcf record is re-read for any reason this flag is cleared brfore 2452 * adding it to the priority list. 2453 **/ 2454 void 2455 lpfc_sli4_set_fcf_flogi_fail(struct lpfc_hba *phba, uint16_t fcf_index) 2456 { 2457 struct lpfc_fcf_pri *new_fcf_pri; 2458 new_fcf_pri = &phba->fcf.fcf_pri[fcf_index]; 2459 spin_lock_irq(&phba->hbalock); 2460 new_fcf_pri->fcf_rec.flag |= LPFC_FCF_FLOGI_FAILED; 2461 spin_unlock_irq(&phba->hbalock); 2462 } 2463 2464 /** 2465 * lpfc_sli4_fcf_pri_list_add 2466 * @phba: pointer to lpfc hba data structure. 2467 * @fcf_index: the index of the fcf record to add 2468 * @new_fcf_record: pointer to a new FCF record. 2469 * This routine checks the priority of the fcf_index to be added. 2470 * If it is a lower priority than the current head of the fcf_pri list 2471 * then it is added to the list in the right order. 2472 * If it is the same priority as the current head of the list then it 2473 * is added to the head of the list and its bit in the rr_bmask is set. 2474 * If the fcf_index to be added is of a higher priority than the current 2475 * head of the list then the rr_bmask is cleared, its bit is set in the 2476 * rr_bmask and it is added to the head of the list. 2477 * returns: 2478 * 0=success 1=failure 2479 **/ 2480 static int lpfc_sli4_fcf_pri_list_add(struct lpfc_hba *phba, 2481 uint16_t fcf_index, 2482 struct fcf_record *new_fcf_record) 2483 { 2484 uint16_t current_fcf_pri; 2485 uint16_t last_index; 2486 struct lpfc_fcf_pri *fcf_pri; 2487 struct lpfc_fcf_pri *next_fcf_pri; 2488 struct lpfc_fcf_pri *new_fcf_pri; 2489 int ret; 2490 2491 new_fcf_pri = &phba->fcf.fcf_pri[fcf_index]; 2492 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2493 "3059 adding idx x%x pri x%x flg x%x\n", 2494 fcf_index, new_fcf_record->fip_priority, 2495 new_fcf_pri->fcf_rec.flag); 2496 spin_lock_irq(&phba->hbalock); 2497 if (new_fcf_pri->fcf_rec.flag & LPFC_FCF_ON_PRI_LIST) 2498 list_del_init(&new_fcf_pri->list); 2499 new_fcf_pri->fcf_rec.fcf_index = fcf_index; 2500 new_fcf_pri->fcf_rec.priority = new_fcf_record->fip_priority; 2501 if (list_empty(&phba->fcf.fcf_pri_list)) { 2502 list_add(&new_fcf_pri->list, &phba->fcf.fcf_pri_list); 2503 ret = lpfc_sli4_fcf_rr_index_set(phba, 2504 new_fcf_pri->fcf_rec.fcf_index); 2505 goto out; 2506 } 2507 2508 last_index = find_first_bit(phba->fcf.fcf_rr_bmask, 2509 LPFC_SLI4_FCF_TBL_INDX_MAX); 2510 if (last_index >= LPFC_SLI4_FCF_TBL_INDX_MAX) { 2511 ret = 0; /* Empty rr list */ 2512 goto out; 2513 } 2514 current_fcf_pri = phba->fcf.fcf_pri[last_index].fcf_rec.priority; 2515 if (new_fcf_pri->fcf_rec.priority <= current_fcf_pri) { 2516 list_add(&new_fcf_pri->list, &phba->fcf.fcf_pri_list); 2517 if (new_fcf_pri->fcf_rec.priority < current_fcf_pri) { 2518 memset(phba->fcf.fcf_rr_bmask, 0, 2519 sizeof(*phba->fcf.fcf_rr_bmask)); 2520 /* fcfs_at_this_priority_level = 1; */ 2521 phba->fcf.eligible_fcf_cnt = 1; 2522 } else 2523 /* fcfs_at_this_priority_level++; */ 2524 phba->fcf.eligible_fcf_cnt++; 2525 ret = lpfc_sli4_fcf_rr_index_set(phba, 2526 new_fcf_pri->fcf_rec.fcf_index); 2527 goto out; 2528 } 2529 2530 list_for_each_entry_safe(fcf_pri, next_fcf_pri, 2531 &phba->fcf.fcf_pri_list, list) { 2532 if (new_fcf_pri->fcf_rec.priority <= 2533 fcf_pri->fcf_rec.priority) { 2534 if (fcf_pri->list.prev == &phba->fcf.fcf_pri_list) 2535 list_add(&new_fcf_pri->list, 2536 &phba->fcf.fcf_pri_list); 2537 else 2538 list_add(&new_fcf_pri->list, 2539 &((struct lpfc_fcf_pri *) 2540 fcf_pri->list.prev)->list); 2541 ret = 0; 2542 goto out; 2543 } else if (fcf_pri->list.next == &phba->fcf.fcf_pri_list 2544 || new_fcf_pri->fcf_rec.priority < 2545 next_fcf_pri->fcf_rec.priority) { 2546 list_add(&new_fcf_pri->list, &fcf_pri->list); 2547 ret = 0; 2548 goto out; 2549 } 2550 if (new_fcf_pri->fcf_rec.priority > fcf_pri->fcf_rec.priority) 2551 continue; 2552 2553 } 2554 ret = 1; 2555 out: 2556 /* we use = instead of |= to clear the FLOGI_FAILED flag. */ 2557 new_fcf_pri->fcf_rec.flag = LPFC_FCF_ON_PRI_LIST; 2558 spin_unlock_irq(&phba->hbalock); 2559 return ret; 2560 } 2561 2562 /** 2563 * lpfc_mbx_cmpl_fcf_scan_read_fcf_rec - fcf scan read_fcf mbox cmpl handler. 2564 * @phba: pointer to lpfc hba data structure. 2565 * @mboxq: pointer to mailbox object. 2566 * 2567 * This function iterates through all the fcf records available in 2568 * HBA and chooses the optimal FCF record for discovery. After finding 2569 * the FCF for discovery it registers the FCF record and kicks start 2570 * discovery. 2571 * If FCF_IN_USE flag is set in currently used FCF, the routine tries to 2572 * use an FCF record which matches fabric name and mac address of the 2573 * currently used FCF record. 2574 * If the driver supports only one FCF, it will try to use the FCF record 2575 * used by BOOT_BIOS. 2576 */ 2577 void 2578 lpfc_mbx_cmpl_fcf_scan_read_fcf_rec(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq) 2579 { 2580 struct fcf_record *new_fcf_record; 2581 uint32_t boot_flag, addr_mode; 2582 uint16_t fcf_index, next_fcf_index; 2583 struct lpfc_fcf_rec *fcf_rec = NULL; 2584 uint16_t vlan_id = LPFC_FCOE_NULL_VID; 2585 bool select_new_fcf; 2586 int rc; 2587 2588 /* If there is pending FCoE event restart FCF table scan */ 2589 if (lpfc_check_pending_fcoe_event(phba, LPFC_SKIP_UNREG_FCF)) { 2590 lpfc_sli4_mbox_cmd_free(phba, mboxq); 2591 return; 2592 } 2593 2594 /* Parse the FCF record from the non-embedded mailbox command */ 2595 new_fcf_record = lpfc_sli4_fcf_rec_mbox_parse(phba, mboxq, 2596 &next_fcf_index); 2597 if (!new_fcf_record) { 2598 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 2599 "2765 Mailbox command READ_FCF_RECORD " 2600 "failed to retrieve a FCF record.\n"); 2601 /* Let next new FCF event trigger fast failover */ 2602 spin_lock_irq(&phba->hbalock); 2603 phba->hba_flag &= ~FCF_TS_INPROG; 2604 spin_unlock_irq(&phba->hbalock); 2605 lpfc_sli4_mbox_cmd_free(phba, mboxq); 2606 return; 2607 } 2608 2609 /* Check the FCF record against the connection list */ 2610 rc = lpfc_match_fcf_conn_list(phba, new_fcf_record, &boot_flag, 2611 &addr_mode, &vlan_id); 2612 2613 /* Log the FCF record information if turned on */ 2614 lpfc_sli4_log_fcf_record_info(phba, new_fcf_record, vlan_id, 2615 next_fcf_index); 2616 2617 /* 2618 * If the fcf record does not match with connect list entries 2619 * read the next entry; otherwise, this is an eligible FCF 2620 * record for roundrobin FCF failover. 2621 */ 2622 if (!rc) { 2623 lpfc_sli4_fcf_pri_list_del(phba, 2624 bf_get(lpfc_fcf_record_fcf_index, 2625 new_fcf_record)); 2626 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP, 2627 "2781 FCF (x%x) failed connection " 2628 "list check: (x%x/x%x/%x)\n", 2629 bf_get(lpfc_fcf_record_fcf_index, 2630 new_fcf_record), 2631 bf_get(lpfc_fcf_record_fcf_avail, 2632 new_fcf_record), 2633 bf_get(lpfc_fcf_record_fcf_valid, 2634 new_fcf_record), 2635 bf_get(lpfc_fcf_record_fcf_sol, 2636 new_fcf_record)); 2637 if ((phba->fcf.fcf_flag & FCF_IN_USE) && 2638 lpfc_sli4_fcf_record_match(phba, &phba->fcf.current_rec, 2639 new_fcf_record, LPFC_FCOE_IGNORE_VID)) { 2640 if (bf_get(lpfc_fcf_record_fcf_index, new_fcf_record) != 2641 phba->fcf.current_rec.fcf_indx) { 2642 lpfc_printf_log(phba, KERN_ERR, 2643 LOG_TRACE_EVENT, 2644 "2862 FCF (x%x) matches property " 2645 "of in-use FCF (x%x)\n", 2646 bf_get(lpfc_fcf_record_fcf_index, 2647 new_fcf_record), 2648 phba->fcf.current_rec.fcf_indx); 2649 goto read_next_fcf; 2650 } 2651 /* 2652 * In case the current in-use FCF record becomes 2653 * invalid/unavailable during FCF discovery that 2654 * was not triggered by fast FCF failover process, 2655 * treat it as fast FCF failover. 2656 */ 2657 if (!(phba->fcf.fcf_flag & FCF_REDISC_PEND) && 2658 !(phba->fcf.fcf_flag & FCF_REDISC_FOV)) { 2659 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP, 2660 "2835 Invalid in-use FCF " 2661 "(x%x), enter FCF failover " 2662 "table scan.\n", 2663 phba->fcf.current_rec.fcf_indx); 2664 spin_lock_irq(&phba->hbalock); 2665 phba->fcf.fcf_flag |= FCF_REDISC_FOV; 2666 spin_unlock_irq(&phba->hbalock); 2667 lpfc_sli4_mbox_cmd_free(phba, mboxq); 2668 lpfc_sli4_fcf_scan_read_fcf_rec(phba, 2669 LPFC_FCOE_FCF_GET_FIRST); 2670 return; 2671 } 2672 } 2673 goto read_next_fcf; 2674 } else { 2675 fcf_index = bf_get(lpfc_fcf_record_fcf_index, new_fcf_record); 2676 rc = lpfc_sli4_fcf_pri_list_add(phba, fcf_index, 2677 new_fcf_record); 2678 if (rc) 2679 goto read_next_fcf; 2680 } 2681 2682 /* 2683 * If this is not the first FCF discovery of the HBA, use last 2684 * FCF record for the discovery. The condition that a rescan 2685 * matches the in-use FCF record: fabric name, switch name, mac 2686 * address, and vlan_id. 2687 */ 2688 spin_lock_irq(&phba->hbalock); 2689 if (phba->fcf.fcf_flag & FCF_IN_USE) { 2690 if (phba->cfg_fcf_failover_policy == LPFC_FCF_FOV && 2691 lpfc_sli4_fcf_record_match(phba, &phba->fcf.current_rec, 2692 new_fcf_record, vlan_id)) { 2693 if (bf_get(lpfc_fcf_record_fcf_index, new_fcf_record) == 2694 phba->fcf.current_rec.fcf_indx) { 2695 phba->fcf.fcf_flag |= FCF_AVAILABLE; 2696 if (phba->fcf.fcf_flag & FCF_REDISC_PEND) 2697 /* Stop FCF redisc wait timer */ 2698 __lpfc_sli4_stop_fcf_redisc_wait_timer( 2699 phba); 2700 else if (phba->fcf.fcf_flag & FCF_REDISC_FOV) 2701 /* Fast failover, mark completed */ 2702 phba->fcf.fcf_flag &= ~FCF_REDISC_FOV; 2703 spin_unlock_irq(&phba->hbalock); 2704 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2705 "2836 New FCF matches in-use " 2706 "FCF (x%x), port_state:x%x, " 2707 "fc_flag:x%x\n", 2708 phba->fcf.current_rec.fcf_indx, 2709 phba->pport->port_state, 2710 phba->pport->fc_flag); 2711 goto out; 2712 } else 2713 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 2714 "2863 New FCF (x%x) matches " 2715 "property of in-use FCF (x%x)\n", 2716 bf_get(lpfc_fcf_record_fcf_index, 2717 new_fcf_record), 2718 phba->fcf.current_rec.fcf_indx); 2719 } 2720 /* 2721 * Read next FCF record from HBA searching for the matching 2722 * with in-use record only if not during the fast failover 2723 * period. In case of fast failover period, it shall try to 2724 * determine whether the FCF record just read should be the 2725 * next candidate. 2726 */ 2727 if (!(phba->fcf.fcf_flag & FCF_REDISC_FOV)) { 2728 spin_unlock_irq(&phba->hbalock); 2729 goto read_next_fcf; 2730 } 2731 } 2732 /* 2733 * Update on failover FCF record only if it's in FCF fast-failover 2734 * period; otherwise, update on current FCF record. 2735 */ 2736 if (phba->fcf.fcf_flag & FCF_REDISC_FOV) 2737 fcf_rec = &phba->fcf.failover_rec; 2738 else 2739 fcf_rec = &phba->fcf.current_rec; 2740 2741 if (phba->fcf.fcf_flag & FCF_AVAILABLE) { 2742 /* 2743 * If the driver FCF record does not have boot flag 2744 * set and new hba fcf record has boot flag set, use 2745 * the new hba fcf record. 2746 */ 2747 if (boot_flag && !(fcf_rec->flag & BOOT_ENABLE)) { 2748 /* Choose this FCF record */ 2749 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2750 "2837 Update current FCF record " 2751 "(x%x) with new FCF record (x%x)\n", 2752 fcf_rec->fcf_indx, 2753 bf_get(lpfc_fcf_record_fcf_index, 2754 new_fcf_record)); 2755 __lpfc_update_fcf_record(phba, fcf_rec, new_fcf_record, 2756 addr_mode, vlan_id, BOOT_ENABLE); 2757 spin_unlock_irq(&phba->hbalock); 2758 goto read_next_fcf; 2759 } 2760 /* 2761 * If the driver FCF record has boot flag set and the 2762 * new hba FCF record does not have boot flag, read 2763 * the next FCF record. 2764 */ 2765 if (!boot_flag && (fcf_rec->flag & BOOT_ENABLE)) { 2766 spin_unlock_irq(&phba->hbalock); 2767 goto read_next_fcf; 2768 } 2769 /* 2770 * If the new hba FCF record has lower priority value 2771 * than the driver FCF record, use the new record. 2772 */ 2773 if (new_fcf_record->fip_priority < fcf_rec->priority) { 2774 /* Choose the new FCF record with lower priority */ 2775 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2776 "2838 Update current FCF record " 2777 "(x%x) with new FCF record (x%x)\n", 2778 fcf_rec->fcf_indx, 2779 bf_get(lpfc_fcf_record_fcf_index, 2780 new_fcf_record)); 2781 __lpfc_update_fcf_record(phba, fcf_rec, new_fcf_record, 2782 addr_mode, vlan_id, 0); 2783 /* Reset running random FCF selection count */ 2784 phba->fcf.eligible_fcf_cnt = 1; 2785 } else if (new_fcf_record->fip_priority == fcf_rec->priority) { 2786 /* Update running random FCF selection count */ 2787 phba->fcf.eligible_fcf_cnt++; 2788 select_new_fcf = lpfc_sli4_new_fcf_random_select(phba, 2789 phba->fcf.eligible_fcf_cnt); 2790 if (select_new_fcf) { 2791 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2792 "2839 Update current FCF record " 2793 "(x%x) with new FCF record (x%x)\n", 2794 fcf_rec->fcf_indx, 2795 bf_get(lpfc_fcf_record_fcf_index, 2796 new_fcf_record)); 2797 /* Choose the new FCF by random selection */ 2798 __lpfc_update_fcf_record(phba, fcf_rec, 2799 new_fcf_record, 2800 addr_mode, vlan_id, 0); 2801 } 2802 } 2803 spin_unlock_irq(&phba->hbalock); 2804 goto read_next_fcf; 2805 } 2806 /* 2807 * This is the first suitable FCF record, choose this record for 2808 * initial best-fit FCF. 2809 */ 2810 if (fcf_rec) { 2811 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2812 "2840 Update initial FCF candidate " 2813 "with FCF (x%x)\n", 2814 bf_get(lpfc_fcf_record_fcf_index, 2815 new_fcf_record)); 2816 __lpfc_update_fcf_record(phba, fcf_rec, new_fcf_record, 2817 addr_mode, vlan_id, (boot_flag ? 2818 BOOT_ENABLE : 0)); 2819 phba->fcf.fcf_flag |= FCF_AVAILABLE; 2820 /* Setup initial running random FCF selection count */ 2821 phba->fcf.eligible_fcf_cnt = 1; 2822 } 2823 spin_unlock_irq(&phba->hbalock); 2824 goto read_next_fcf; 2825 2826 read_next_fcf: 2827 lpfc_sli4_mbox_cmd_free(phba, mboxq); 2828 if (next_fcf_index == LPFC_FCOE_FCF_NEXT_NONE || next_fcf_index == 0) { 2829 if (phba->fcf.fcf_flag & FCF_REDISC_FOV) { 2830 /* 2831 * Case of FCF fast failover scan 2832 */ 2833 2834 /* 2835 * It has not found any suitable FCF record, cancel 2836 * FCF scan inprogress, and do nothing 2837 */ 2838 if (!(phba->fcf.failover_rec.flag & RECORD_VALID)) { 2839 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP, 2840 "2782 No suitable FCF found: " 2841 "(x%x/x%x)\n", 2842 phba->fcoe_eventtag_at_fcf_scan, 2843 bf_get(lpfc_fcf_record_fcf_index, 2844 new_fcf_record)); 2845 spin_lock_irq(&phba->hbalock); 2846 if (phba->hba_flag & HBA_DEVLOSS_TMO) { 2847 phba->hba_flag &= ~FCF_TS_INPROG; 2848 spin_unlock_irq(&phba->hbalock); 2849 /* Unregister in-use FCF and rescan */ 2850 lpfc_printf_log(phba, KERN_INFO, 2851 LOG_FIP, 2852 "2864 On devloss tmo " 2853 "unreg in-use FCF and " 2854 "rescan FCF table\n"); 2855 lpfc_unregister_fcf_rescan(phba); 2856 return; 2857 } 2858 /* 2859 * Let next new FCF event trigger fast failover 2860 */ 2861 phba->hba_flag &= ~FCF_TS_INPROG; 2862 spin_unlock_irq(&phba->hbalock); 2863 return; 2864 } 2865 /* 2866 * It has found a suitable FCF record that is not 2867 * the same as in-use FCF record, unregister the 2868 * in-use FCF record, replace the in-use FCF record 2869 * with the new FCF record, mark FCF fast failover 2870 * completed, and then start register the new FCF 2871 * record. 2872 */ 2873 2874 /* Unregister the current in-use FCF record */ 2875 lpfc_unregister_fcf(phba); 2876 2877 /* Replace in-use record with the new record */ 2878 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2879 "2842 Replace in-use FCF (x%x) " 2880 "with failover FCF (x%x)\n", 2881 phba->fcf.current_rec.fcf_indx, 2882 phba->fcf.failover_rec.fcf_indx); 2883 memcpy(&phba->fcf.current_rec, 2884 &phba->fcf.failover_rec, 2885 sizeof(struct lpfc_fcf_rec)); 2886 /* 2887 * Mark the fast FCF failover rediscovery completed 2888 * and the start of the first round of the roundrobin 2889 * FCF failover. 2890 */ 2891 spin_lock_irq(&phba->hbalock); 2892 phba->fcf.fcf_flag &= ~FCF_REDISC_FOV; 2893 spin_unlock_irq(&phba->hbalock); 2894 /* Register to the new FCF record */ 2895 lpfc_register_fcf(phba); 2896 } else { 2897 /* 2898 * In case of transaction period to fast FCF failover, 2899 * do nothing when search to the end of the FCF table. 2900 */ 2901 if ((phba->fcf.fcf_flag & FCF_REDISC_EVT) || 2902 (phba->fcf.fcf_flag & FCF_REDISC_PEND)) 2903 return; 2904 2905 if (phba->cfg_fcf_failover_policy == LPFC_FCF_FOV && 2906 phba->fcf.fcf_flag & FCF_IN_USE) { 2907 /* 2908 * In case the current in-use FCF record no 2909 * longer existed during FCF discovery that 2910 * was not triggered by fast FCF failover 2911 * process, treat it as fast FCF failover. 2912 */ 2913 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2914 "2841 In-use FCF record (x%x) " 2915 "not reported, entering fast " 2916 "FCF failover mode scanning.\n", 2917 phba->fcf.current_rec.fcf_indx); 2918 spin_lock_irq(&phba->hbalock); 2919 phba->fcf.fcf_flag |= FCF_REDISC_FOV; 2920 spin_unlock_irq(&phba->hbalock); 2921 lpfc_sli4_fcf_scan_read_fcf_rec(phba, 2922 LPFC_FCOE_FCF_GET_FIRST); 2923 return; 2924 } 2925 /* Register to the new FCF record */ 2926 lpfc_register_fcf(phba); 2927 } 2928 } else 2929 lpfc_sli4_fcf_scan_read_fcf_rec(phba, next_fcf_index); 2930 return; 2931 2932 out: 2933 lpfc_sli4_mbox_cmd_free(phba, mboxq); 2934 lpfc_register_fcf(phba); 2935 2936 return; 2937 } 2938 2939 /** 2940 * lpfc_mbx_cmpl_fcf_rr_read_fcf_rec - fcf roundrobin read_fcf mbox cmpl hdler 2941 * @phba: pointer to lpfc hba data structure. 2942 * @mboxq: pointer to mailbox object. 2943 * 2944 * This is the callback function for FLOGI failure roundrobin FCF failover 2945 * read FCF record mailbox command from the eligible FCF record bmask for 2946 * performing the failover. If the FCF read back is not valid/available, it 2947 * fails through to retrying FLOGI to the currently registered FCF again. 2948 * Otherwise, if the FCF read back is valid and available, it will set the 2949 * newly read FCF record to the failover FCF record, unregister currently 2950 * registered FCF record, copy the failover FCF record to the current 2951 * FCF record, and then register the current FCF record before proceeding 2952 * to trying FLOGI on the new failover FCF. 2953 */ 2954 void 2955 lpfc_mbx_cmpl_fcf_rr_read_fcf_rec(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq) 2956 { 2957 struct fcf_record *new_fcf_record; 2958 uint32_t boot_flag, addr_mode; 2959 uint16_t next_fcf_index, fcf_index; 2960 uint16_t current_fcf_index; 2961 uint16_t vlan_id; 2962 int rc; 2963 2964 /* If link state is not up, stop the roundrobin failover process */ 2965 if (phba->link_state < LPFC_LINK_UP) { 2966 spin_lock_irq(&phba->hbalock); 2967 phba->fcf.fcf_flag &= ~FCF_DISCOVERY; 2968 phba->hba_flag &= ~FCF_RR_INPROG; 2969 spin_unlock_irq(&phba->hbalock); 2970 goto out; 2971 } 2972 2973 /* Parse the FCF record from the non-embedded mailbox command */ 2974 new_fcf_record = lpfc_sli4_fcf_rec_mbox_parse(phba, mboxq, 2975 &next_fcf_index); 2976 if (!new_fcf_record) { 2977 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP, 2978 "2766 Mailbox command READ_FCF_RECORD " 2979 "failed to retrieve a FCF record. " 2980 "hba_flg x%x fcf_flg x%x\n", phba->hba_flag, 2981 phba->fcf.fcf_flag); 2982 lpfc_unregister_fcf_rescan(phba); 2983 goto out; 2984 } 2985 2986 /* Get the needed parameters from FCF record */ 2987 rc = lpfc_match_fcf_conn_list(phba, new_fcf_record, &boot_flag, 2988 &addr_mode, &vlan_id); 2989 2990 /* Log the FCF record information if turned on */ 2991 lpfc_sli4_log_fcf_record_info(phba, new_fcf_record, vlan_id, 2992 next_fcf_index); 2993 2994 fcf_index = bf_get(lpfc_fcf_record_fcf_index, new_fcf_record); 2995 if (!rc) { 2996 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2997 "2848 Remove ineligible FCF (x%x) from " 2998 "from roundrobin bmask\n", fcf_index); 2999 /* Clear roundrobin bmask bit for ineligible FCF */ 3000 lpfc_sli4_fcf_rr_index_clear(phba, fcf_index); 3001 /* Perform next round of roundrobin FCF failover */ 3002 fcf_index = lpfc_sli4_fcf_rr_next_index_get(phba); 3003 rc = lpfc_sli4_fcf_rr_next_proc(phba->pport, fcf_index); 3004 if (rc) 3005 goto out; 3006 goto error_out; 3007 } 3008 3009 if (fcf_index == phba->fcf.current_rec.fcf_indx) { 3010 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 3011 "2760 Perform FLOGI roundrobin FCF failover: " 3012 "FCF (x%x) back to FCF (x%x)\n", 3013 phba->fcf.current_rec.fcf_indx, fcf_index); 3014 /* Wait 500 ms before retrying FLOGI to current FCF */ 3015 msleep(500); 3016 lpfc_issue_init_vfi(phba->pport); 3017 goto out; 3018 } 3019 3020 /* Upload new FCF record to the failover FCF record */ 3021 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 3022 "2834 Update current FCF (x%x) with new FCF (x%x)\n", 3023 phba->fcf.failover_rec.fcf_indx, fcf_index); 3024 spin_lock_irq(&phba->hbalock); 3025 __lpfc_update_fcf_record(phba, &phba->fcf.failover_rec, 3026 new_fcf_record, addr_mode, vlan_id, 3027 (boot_flag ? BOOT_ENABLE : 0)); 3028 spin_unlock_irq(&phba->hbalock); 3029 3030 current_fcf_index = phba->fcf.current_rec.fcf_indx; 3031 3032 /* Unregister the current in-use FCF record */ 3033 lpfc_unregister_fcf(phba); 3034 3035 /* Replace in-use record with the new record */ 3036 memcpy(&phba->fcf.current_rec, &phba->fcf.failover_rec, 3037 sizeof(struct lpfc_fcf_rec)); 3038 3039 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 3040 "2783 Perform FLOGI roundrobin FCF failover: FCF " 3041 "(x%x) to FCF (x%x)\n", current_fcf_index, fcf_index); 3042 3043 error_out: 3044 lpfc_register_fcf(phba); 3045 out: 3046 lpfc_sli4_mbox_cmd_free(phba, mboxq); 3047 } 3048 3049 /** 3050 * lpfc_mbx_cmpl_read_fcf_rec - read fcf completion handler. 3051 * @phba: pointer to lpfc hba data structure. 3052 * @mboxq: pointer to mailbox object. 3053 * 3054 * This is the callback function of read FCF record mailbox command for 3055 * updating the eligible FCF bmask for FLOGI failure roundrobin FCF 3056 * failover when a new FCF event happened. If the FCF read back is 3057 * valid/available and it passes the connection list check, it updates 3058 * the bmask for the eligible FCF record for roundrobin failover. 3059 */ 3060 void 3061 lpfc_mbx_cmpl_read_fcf_rec(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq) 3062 { 3063 struct fcf_record *new_fcf_record; 3064 uint32_t boot_flag, addr_mode; 3065 uint16_t fcf_index, next_fcf_index; 3066 uint16_t vlan_id; 3067 int rc; 3068 3069 /* If link state is not up, no need to proceed */ 3070 if (phba->link_state < LPFC_LINK_UP) 3071 goto out; 3072 3073 /* If FCF discovery period is over, no need to proceed */ 3074 if (!(phba->fcf.fcf_flag & FCF_DISCOVERY)) 3075 goto out; 3076 3077 /* Parse the FCF record from the non-embedded mailbox command */ 3078 new_fcf_record = lpfc_sli4_fcf_rec_mbox_parse(phba, mboxq, 3079 &next_fcf_index); 3080 if (!new_fcf_record) { 3081 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 3082 "2767 Mailbox command READ_FCF_RECORD " 3083 "failed to retrieve a FCF record.\n"); 3084 goto out; 3085 } 3086 3087 /* Check the connection list for eligibility */ 3088 rc = lpfc_match_fcf_conn_list(phba, new_fcf_record, &boot_flag, 3089 &addr_mode, &vlan_id); 3090 3091 /* Log the FCF record information if turned on */ 3092 lpfc_sli4_log_fcf_record_info(phba, new_fcf_record, vlan_id, 3093 next_fcf_index); 3094 3095 if (!rc) 3096 goto out; 3097 3098 /* Update the eligible FCF record index bmask */ 3099 fcf_index = bf_get(lpfc_fcf_record_fcf_index, new_fcf_record); 3100 3101 rc = lpfc_sli4_fcf_pri_list_add(phba, fcf_index, new_fcf_record); 3102 3103 out: 3104 lpfc_sli4_mbox_cmd_free(phba, mboxq); 3105 } 3106 3107 /** 3108 * lpfc_init_vfi_cmpl - Completion handler for init_vfi mbox command. 3109 * @phba: pointer to lpfc hba data structure. 3110 * @mboxq: pointer to mailbox data structure. 3111 * 3112 * This function handles completion of init vfi mailbox command. 3113 */ 3114 static void 3115 lpfc_init_vfi_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq) 3116 { 3117 struct lpfc_vport *vport = mboxq->vport; 3118 3119 /* 3120 * VFI not supported on interface type 0, just do the flogi 3121 * Also continue if the VFI is in use - just use the same one. 3122 */ 3123 if (mboxq->u.mb.mbxStatus && 3124 (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) != 3125 LPFC_SLI_INTF_IF_TYPE_0) && 3126 mboxq->u.mb.mbxStatus != MBX_VFI_IN_USE) { 3127 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 3128 "2891 Init VFI mailbox failed 0x%x\n", 3129 mboxq->u.mb.mbxStatus); 3130 mempool_free(mboxq, phba->mbox_mem_pool); 3131 lpfc_vport_set_state(vport, FC_VPORT_FAILED); 3132 return; 3133 } 3134 3135 lpfc_initial_flogi(vport); 3136 mempool_free(mboxq, phba->mbox_mem_pool); 3137 return; 3138 } 3139 3140 /** 3141 * lpfc_issue_init_vfi - Issue init_vfi mailbox command. 3142 * @vport: pointer to lpfc_vport data structure. 3143 * 3144 * This function issue a init_vfi mailbox command to initialize the VFI and 3145 * VPI for the physical port. 3146 */ 3147 void 3148 lpfc_issue_init_vfi(struct lpfc_vport *vport) 3149 { 3150 LPFC_MBOXQ_t *mboxq; 3151 int rc; 3152 struct lpfc_hba *phba = vport->phba; 3153 3154 mboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 3155 if (!mboxq) { 3156 lpfc_printf_vlog(vport, KERN_ERR, 3157 LOG_TRACE_EVENT, "2892 Failed to allocate " 3158 "init_vfi mailbox\n"); 3159 return; 3160 } 3161 lpfc_init_vfi(mboxq, vport); 3162 mboxq->mbox_cmpl = lpfc_init_vfi_cmpl; 3163 rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_NOWAIT); 3164 if (rc == MBX_NOT_FINISHED) { 3165 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 3166 "2893 Failed to issue init_vfi mailbox\n"); 3167 mempool_free(mboxq, vport->phba->mbox_mem_pool); 3168 } 3169 } 3170 3171 /** 3172 * lpfc_init_vpi_cmpl - Completion handler for init_vpi mbox command. 3173 * @phba: pointer to lpfc hba data structure. 3174 * @mboxq: pointer to mailbox data structure. 3175 * 3176 * This function handles completion of init vpi mailbox command. 3177 */ 3178 void 3179 lpfc_init_vpi_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq) 3180 { 3181 struct lpfc_vport *vport = mboxq->vport; 3182 struct lpfc_nodelist *ndlp; 3183 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 3184 3185 if (mboxq->u.mb.mbxStatus) { 3186 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 3187 "2609 Init VPI mailbox failed 0x%x\n", 3188 mboxq->u.mb.mbxStatus); 3189 mempool_free(mboxq, phba->mbox_mem_pool); 3190 lpfc_vport_set_state(vport, FC_VPORT_FAILED); 3191 return; 3192 } 3193 spin_lock_irq(shost->host_lock); 3194 vport->fc_flag &= ~FC_VPORT_NEEDS_INIT_VPI; 3195 spin_unlock_irq(shost->host_lock); 3196 3197 /* If this port is physical port or FDISC is done, do reg_vpi */ 3198 if ((phba->pport == vport) || (vport->port_state == LPFC_FDISC)) { 3199 ndlp = lpfc_findnode_did(vport, Fabric_DID); 3200 if (!ndlp) 3201 lpfc_printf_vlog(vport, KERN_ERR, 3202 LOG_TRACE_EVENT, 3203 "2731 Cannot find fabric " 3204 "controller node\n"); 3205 else 3206 lpfc_register_new_vport(phba, vport, ndlp); 3207 mempool_free(mboxq, phba->mbox_mem_pool); 3208 return; 3209 } 3210 3211 if (phba->link_flag & LS_NPIV_FAB_SUPPORTED) 3212 lpfc_initial_fdisc(vport); 3213 else { 3214 lpfc_vport_set_state(vport, FC_VPORT_NO_FABRIC_SUPP); 3215 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 3216 "2606 No NPIV Fabric support\n"); 3217 } 3218 mempool_free(mboxq, phba->mbox_mem_pool); 3219 return; 3220 } 3221 3222 /** 3223 * lpfc_issue_init_vpi - Issue init_vpi mailbox command. 3224 * @vport: pointer to lpfc_vport data structure. 3225 * 3226 * This function issue a init_vpi mailbox command to initialize 3227 * VPI for the vport. 3228 */ 3229 void 3230 lpfc_issue_init_vpi(struct lpfc_vport *vport) 3231 { 3232 LPFC_MBOXQ_t *mboxq; 3233 int rc, vpi; 3234 3235 if ((vport->port_type != LPFC_PHYSICAL_PORT) && (!vport->vpi)) { 3236 vpi = lpfc_alloc_vpi(vport->phba); 3237 if (!vpi) { 3238 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 3239 "3303 Failed to obtain vport vpi\n"); 3240 lpfc_vport_set_state(vport, FC_VPORT_FAILED); 3241 return; 3242 } 3243 vport->vpi = vpi; 3244 } 3245 3246 mboxq = mempool_alloc(vport->phba->mbox_mem_pool, GFP_KERNEL); 3247 if (!mboxq) { 3248 lpfc_printf_vlog(vport, KERN_ERR, 3249 LOG_TRACE_EVENT, "2607 Failed to allocate " 3250 "init_vpi mailbox\n"); 3251 return; 3252 } 3253 lpfc_init_vpi(vport->phba, mboxq, vport->vpi); 3254 mboxq->vport = vport; 3255 mboxq->mbox_cmpl = lpfc_init_vpi_cmpl; 3256 rc = lpfc_sli_issue_mbox(vport->phba, mboxq, MBX_NOWAIT); 3257 if (rc == MBX_NOT_FINISHED) { 3258 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 3259 "2608 Failed to issue init_vpi mailbox\n"); 3260 mempool_free(mboxq, vport->phba->mbox_mem_pool); 3261 } 3262 } 3263 3264 /** 3265 * lpfc_start_fdiscs - send fdiscs for each vports on this port. 3266 * @phba: pointer to lpfc hba data structure. 3267 * 3268 * This function loops through the list of vports on the @phba and issues an 3269 * FDISC if possible. 3270 */ 3271 void 3272 lpfc_start_fdiscs(struct lpfc_hba *phba) 3273 { 3274 struct lpfc_vport **vports; 3275 int i; 3276 3277 vports = lpfc_create_vport_work_array(phba); 3278 if (vports != NULL) { 3279 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) { 3280 if (vports[i]->port_type == LPFC_PHYSICAL_PORT) 3281 continue; 3282 /* There are no vpi for this vport */ 3283 if (vports[i]->vpi > phba->max_vpi) { 3284 lpfc_vport_set_state(vports[i], 3285 FC_VPORT_FAILED); 3286 continue; 3287 } 3288 if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) { 3289 lpfc_vport_set_state(vports[i], 3290 FC_VPORT_LINKDOWN); 3291 continue; 3292 } 3293 if (vports[i]->fc_flag & FC_VPORT_NEEDS_INIT_VPI) { 3294 lpfc_issue_init_vpi(vports[i]); 3295 continue; 3296 } 3297 if (phba->link_flag & LS_NPIV_FAB_SUPPORTED) 3298 lpfc_initial_fdisc(vports[i]); 3299 else { 3300 lpfc_vport_set_state(vports[i], 3301 FC_VPORT_NO_FABRIC_SUPP); 3302 lpfc_printf_vlog(vports[i], KERN_ERR, 3303 LOG_TRACE_EVENT, 3304 "0259 No NPIV " 3305 "Fabric support\n"); 3306 } 3307 } 3308 } 3309 lpfc_destroy_vport_work_array(phba, vports); 3310 } 3311 3312 void 3313 lpfc_mbx_cmpl_reg_vfi(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq) 3314 { 3315 struct lpfc_dmabuf *dmabuf = mboxq->ctx_buf; 3316 struct lpfc_vport *vport = mboxq->vport; 3317 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 3318 3319 /* 3320 * VFI not supported for interface type 0, so ignore any mailbox 3321 * error (except VFI in use) and continue with the discovery. 3322 */ 3323 if (mboxq->u.mb.mbxStatus && 3324 (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) != 3325 LPFC_SLI_INTF_IF_TYPE_0) && 3326 mboxq->u.mb.mbxStatus != MBX_VFI_IN_USE) { 3327 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 3328 "2018 REG_VFI mbxStatus error x%x " 3329 "HBA state x%x\n", 3330 mboxq->u.mb.mbxStatus, vport->port_state); 3331 if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) { 3332 /* FLOGI failed, use loop map to make discovery list */ 3333 lpfc_disc_list_loopmap(vport); 3334 /* Start discovery */ 3335 lpfc_disc_start(vport); 3336 goto out_free_mem; 3337 } 3338 lpfc_vport_set_state(vport, FC_VPORT_FAILED); 3339 goto out_free_mem; 3340 } 3341 3342 /* If the VFI is already registered, there is nothing else to do 3343 * Unless this was a VFI update and we are in PT2PT mode, then 3344 * we should drop through to set the port state to ready. 3345 */ 3346 if (vport->fc_flag & FC_VFI_REGISTERED) 3347 if (!(phba->sli_rev == LPFC_SLI_REV4 && 3348 vport->fc_flag & FC_PT2PT)) 3349 goto out_free_mem; 3350 3351 /* The VPI is implicitly registered when the VFI is registered */ 3352 spin_lock_irq(shost->host_lock); 3353 vport->vpi_state |= LPFC_VPI_REGISTERED; 3354 vport->fc_flag |= FC_VFI_REGISTERED; 3355 vport->fc_flag &= ~FC_VPORT_NEEDS_REG_VPI; 3356 vport->fc_flag &= ~FC_VPORT_NEEDS_INIT_VPI; 3357 spin_unlock_irq(shost->host_lock); 3358 3359 /* In case SLI4 FC loopback test, we are ready */ 3360 if ((phba->sli_rev == LPFC_SLI_REV4) && 3361 (phba->link_flag & LS_LOOPBACK_MODE)) { 3362 phba->link_state = LPFC_HBA_READY; 3363 goto out_free_mem; 3364 } 3365 3366 lpfc_printf_vlog(vport, KERN_INFO, LOG_SLI, 3367 "3313 cmpl reg vfi port_state:%x fc_flag:%x myDid:%x " 3368 "alpacnt:%d LinkState:%x topology:%x\n", 3369 vport->port_state, vport->fc_flag, vport->fc_myDID, 3370 vport->phba->alpa_map[0], 3371 phba->link_state, phba->fc_topology); 3372 3373 if (vport->port_state == LPFC_FABRIC_CFG_LINK) { 3374 /* 3375 * For private loop or for NPort pt2pt, 3376 * just start discovery and we are done. 3377 */ 3378 if ((vport->fc_flag & FC_PT2PT) || 3379 ((phba->fc_topology == LPFC_TOPOLOGY_LOOP) && 3380 !(vport->fc_flag & FC_PUBLIC_LOOP))) { 3381 3382 /* Use loop map to make discovery list */ 3383 lpfc_disc_list_loopmap(vport); 3384 /* Start discovery */ 3385 if (vport->fc_flag & FC_PT2PT) 3386 vport->port_state = LPFC_VPORT_READY; 3387 else 3388 lpfc_disc_start(vport); 3389 } else { 3390 lpfc_start_fdiscs(phba); 3391 lpfc_do_scr_ns_plogi(phba, vport); 3392 } 3393 } 3394 3395 out_free_mem: 3396 mempool_free(mboxq, phba->mbox_mem_pool); 3397 if (dmabuf) { 3398 lpfc_mbuf_free(phba, dmabuf->virt, dmabuf->phys); 3399 kfree(dmabuf); 3400 } 3401 return; 3402 } 3403 3404 static void 3405 lpfc_mbx_cmpl_read_sparam(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 3406 { 3407 MAILBOX_t *mb = &pmb->u.mb; 3408 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *)pmb->ctx_buf; 3409 struct lpfc_vport *vport = pmb->vport; 3410 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 3411 struct serv_parm *sp = &vport->fc_sparam; 3412 uint32_t ed_tov; 3413 3414 /* Check for error */ 3415 if (mb->mbxStatus) { 3416 /* READ_SPARAM mbox error <mbxStatus> state <hba_state> */ 3417 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 3418 "0319 READ_SPARAM mbxStatus error x%x " 3419 "hba state x%x>\n", 3420 mb->mbxStatus, vport->port_state); 3421 lpfc_linkdown(phba); 3422 goto out; 3423 } 3424 3425 memcpy((uint8_t *) &vport->fc_sparam, (uint8_t *) mp->virt, 3426 sizeof (struct serv_parm)); 3427 3428 ed_tov = be32_to_cpu(sp->cmn.e_d_tov); 3429 if (sp->cmn.edtovResolution) /* E_D_TOV ticks are in nanoseconds */ 3430 ed_tov = (ed_tov + 999999) / 1000000; 3431 3432 phba->fc_edtov = ed_tov; 3433 phba->fc_ratov = (2 * ed_tov) / 1000; 3434 if (phba->fc_ratov < FF_DEF_RATOV) { 3435 /* RA_TOV should be atleast 10sec for initial flogi */ 3436 phba->fc_ratov = FF_DEF_RATOV; 3437 } 3438 3439 lpfc_update_vport_wwn(vport); 3440 fc_host_port_name(shost) = wwn_to_u64(vport->fc_portname.u.wwn); 3441 if (vport->port_type == LPFC_PHYSICAL_PORT) { 3442 memcpy(&phba->wwnn, &vport->fc_nodename, sizeof(phba->wwnn)); 3443 memcpy(&phba->wwpn, &vport->fc_portname, sizeof(phba->wwnn)); 3444 } 3445 3446 lpfc_mbuf_free(phba, mp->virt, mp->phys); 3447 kfree(mp); 3448 mempool_free(pmb, phba->mbox_mem_pool); 3449 3450 /* Check if sending the FLOGI is being deferred to after we get 3451 * up to date CSPs from MBX_READ_SPARAM. 3452 */ 3453 if (phba->hba_flag & HBA_DEFER_FLOGI) { 3454 lpfc_initial_flogi(vport); 3455 phba->hba_flag &= ~HBA_DEFER_FLOGI; 3456 } 3457 return; 3458 3459 out: 3460 pmb->ctx_buf = NULL; 3461 lpfc_mbuf_free(phba, mp->virt, mp->phys); 3462 kfree(mp); 3463 lpfc_issue_clear_la(phba, vport); 3464 mempool_free(pmb, phba->mbox_mem_pool); 3465 return; 3466 } 3467 3468 static void 3469 lpfc_mbx_process_link_up(struct lpfc_hba *phba, struct lpfc_mbx_read_top *la) 3470 { 3471 struct lpfc_vport *vport = phba->pport; 3472 LPFC_MBOXQ_t *sparam_mbox, *cfglink_mbox = NULL; 3473 struct Scsi_Host *shost; 3474 int i; 3475 struct lpfc_dmabuf *mp; 3476 int rc; 3477 struct fcf_record *fcf_record; 3478 uint32_t fc_flags = 0; 3479 unsigned long iflags; 3480 3481 spin_lock_irqsave(&phba->hbalock, iflags); 3482 phba->fc_linkspeed = bf_get(lpfc_mbx_read_top_link_spd, la); 3483 3484 if (!(phba->hba_flag & HBA_FCOE_MODE)) { 3485 switch (bf_get(lpfc_mbx_read_top_link_spd, la)) { 3486 case LPFC_LINK_SPEED_1GHZ: 3487 case LPFC_LINK_SPEED_2GHZ: 3488 case LPFC_LINK_SPEED_4GHZ: 3489 case LPFC_LINK_SPEED_8GHZ: 3490 case LPFC_LINK_SPEED_10GHZ: 3491 case LPFC_LINK_SPEED_16GHZ: 3492 case LPFC_LINK_SPEED_32GHZ: 3493 case LPFC_LINK_SPEED_64GHZ: 3494 case LPFC_LINK_SPEED_128GHZ: 3495 case LPFC_LINK_SPEED_256GHZ: 3496 break; 3497 default: 3498 phba->fc_linkspeed = LPFC_LINK_SPEED_UNKNOWN; 3499 break; 3500 } 3501 } 3502 3503 if (phba->fc_topology && 3504 phba->fc_topology != bf_get(lpfc_mbx_read_top_topology, la)) { 3505 lpfc_printf_log(phba, KERN_WARNING, LOG_SLI, 3506 "3314 Toplogy changed was 0x%x is 0x%x\n", 3507 phba->fc_topology, 3508 bf_get(lpfc_mbx_read_top_topology, la)); 3509 phba->fc_topology_changed = 1; 3510 } 3511 3512 phba->fc_topology = bf_get(lpfc_mbx_read_top_topology, la); 3513 phba->link_flag &= ~(LS_NPIV_FAB_SUPPORTED | LS_CT_VEN_RPA); 3514 3515 shost = lpfc_shost_from_vport(vport); 3516 if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) { 3517 phba->sli3_options &= ~LPFC_SLI3_NPIV_ENABLED; 3518 3519 /* if npiv is enabled and this adapter supports npiv log 3520 * a message that npiv is not supported in this topology 3521 */ 3522 if (phba->cfg_enable_npiv && phba->max_vpi) 3523 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT, 3524 "1309 Link Up Event npiv not supported in loop " 3525 "topology\n"); 3526 /* Get Loop Map information */ 3527 if (bf_get(lpfc_mbx_read_top_il, la)) 3528 fc_flags |= FC_LBIT; 3529 3530 vport->fc_myDID = bf_get(lpfc_mbx_read_top_alpa_granted, la); 3531 i = la->lilpBde64.tus.f.bdeSize; 3532 3533 if (i == 0) { 3534 phba->alpa_map[0] = 0; 3535 } else { 3536 if (vport->cfg_log_verbose & LOG_LINK_EVENT) { 3537 int numalpa, j, k; 3538 union { 3539 uint8_t pamap[16]; 3540 struct { 3541 uint32_t wd1; 3542 uint32_t wd2; 3543 uint32_t wd3; 3544 uint32_t wd4; 3545 } pa; 3546 } un; 3547 numalpa = phba->alpa_map[0]; 3548 j = 0; 3549 while (j < numalpa) { 3550 memset(un.pamap, 0, 16); 3551 for (k = 1; j < numalpa; k++) { 3552 un.pamap[k - 1] = 3553 phba->alpa_map[j + 1]; 3554 j++; 3555 if (k == 16) 3556 break; 3557 } 3558 /* Link Up Event ALPA map */ 3559 lpfc_printf_log(phba, 3560 KERN_WARNING, 3561 LOG_LINK_EVENT, 3562 "1304 Link Up Event " 3563 "ALPA map Data: x%x " 3564 "x%x x%x x%x\n", 3565 un.pa.wd1, un.pa.wd2, 3566 un.pa.wd3, un.pa.wd4); 3567 } 3568 } 3569 } 3570 } else { 3571 if (!(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)) { 3572 if (phba->max_vpi && phba->cfg_enable_npiv && 3573 (phba->sli_rev >= LPFC_SLI_REV3)) 3574 phba->sli3_options |= LPFC_SLI3_NPIV_ENABLED; 3575 } 3576 vport->fc_myDID = phba->fc_pref_DID; 3577 fc_flags |= FC_LBIT; 3578 } 3579 spin_unlock_irqrestore(&phba->hbalock, iflags); 3580 3581 if (fc_flags) { 3582 spin_lock_irqsave(shost->host_lock, iflags); 3583 vport->fc_flag |= fc_flags; 3584 spin_unlock_irqrestore(shost->host_lock, iflags); 3585 } 3586 3587 lpfc_linkup(phba); 3588 sparam_mbox = NULL; 3589 3590 sparam_mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 3591 if (!sparam_mbox) 3592 goto out; 3593 3594 rc = lpfc_read_sparam(phba, sparam_mbox, 0); 3595 if (rc) { 3596 mempool_free(sparam_mbox, phba->mbox_mem_pool); 3597 goto out; 3598 } 3599 sparam_mbox->vport = vport; 3600 sparam_mbox->mbox_cmpl = lpfc_mbx_cmpl_read_sparam; 3601 rc = lpfc_sli_issue_mbox(phba, sparam_mbox, MBX_NOWAIT); 3602 if (rc == MBX_NOT_FINISHED) { 3603 mp = (struct lpfc_dmabuf *)sparam_mbox->ctx_buf; 3604 lpfc_mbuf_free(phba, mp->virt, mp->phys); 3605 kfree(mp); 3606 mempool_free(sparam_mbox, phba->mbox_mem_pool); 3607 goto out; 3608 } 3609 3610 if (!(phba->hba_flag & HBA_FCOE_MODE)) { 3611 cfglink_mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 3612 if (!cfglink_mbox) 3613 goto out; 3614 vport->port_state = LPFC_LOCAL_CFG_LINK; 3615 lpfc_config_link(phba, cfglink_mbox); 3616 cfglink_mbox->vport = vport; 3617 cfglink_mbox->mbox_cmpl = lpfc_mbx_cmpl_local_config_link; 3618 rc = lpfc_sli_issue_mbox(phba, cfglink_mbox, MBX_NOWAIT); 3619 if (rc == MBX_NOT_FINISHED) { 3620 mempool_free(cfglink_mbox, phba->mbox_mem_pool); 3621 goto out; 3622 } 3623 } else { 3624 vport->port_state = LPFC_VPORT_UNKNOWN; 3625 /* 3626 * Add the driver's default FCF record at FCF index 0 now. This 3627 * is phase 1 implementation that support FCF index 0 and driver 3628 * defaults. 3629 */ 3630 if (!(phba->hba_flag & HBA_FIP_SUPPORT)) { 3631 fcf_record = kzalloc(sizeof(struct fcf_record), 3632 GFP_KERNEL); 3633 if (unlikely(!fcf_record)) { 3634 lpfc_printf_log(phba, KERN_ERR, 3635 LOG_TRACE_EVENT, 3636 "2554 Could not allocate memory for " 3637 "fcf record\n"); 3638 rc = -ENODEV; 3639 goto out; 3640 } 3641 3642 lpfc_sli4_build_dflt_fcf_record(phba, fcf_record, 3643 LPFC_FCOE_FCF_DEF_INDEX); 3644 rc = lpfc_sli4_add_fcf_record(phba, fcf_record); 3645 if (unlikely(rc)) { 3646 lpfc_printf_log(phba, KERN_ERR, 3647 LOG_TRACE_EVENT, 3648 "2013 Could not manually add FCF " 3649 "record 0, status %d\n", rc); 3650 rc = -ENODEV; 3651 kfree(fcf_record); 3652 goto out; 3653 } 3654 kfree(fcf_record); 3655 } 3656 /* 3657 * The driver is expected to do FIP/FCF. Call the port 3658 * and get the FCF Table. 3659 */ 3660 spin_lock_irqsave(&phba->hbalock, iflags); 3661 if (phba->hba_flag & FCF_TS_INPROG) { 3662 spin_unlock_irqrestore(&phba->hbalock, iflags); 3663 return; 3664 } 3665 /* This is the initial FCF discovery scan */ 3666 phba->fcf.fcf_flag |= FCF_INIT_DISC; 3667 spin_unlock_irqrestore(&phba->hbalock, iflags); 3668 lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY, 3669 "2778 Start FCF table scan at linkup\n"); 3670 rc = lpfc_sli4_fcf_scan_read_fcf_rec(phba, 3671 LPFC_FCOE_FCF_GET_FIRST); 3672 if (rc) { 3673 spin_lock_irqsave(&phba->hbalock, iflags); 3674 phba->fcf.fcf_flag &= ~FCF_INIT_DISC; 3675 spin_unlock_irqrestore(&phba->hbalock, iflags); 3676 goto out; 3677 } 3678 /* Reset FCF roundrobin bmask for new discovery */ 3679 lpfc_sli4_clear_fcf_rr_bmask(phba); 3680 } 3681 3682 /* Prepare for LINK up registrations */ 3683 memset(phba->os_host_name, 0, sizeof(phba->os_host_name)); 3684 scnprintf(phba->os_host_name, sizeof(phba->os_host_name), "%s", 3685 init_utsname()->nodename); 3686 return; 3687 out: 3688 lpfc_vport_set_state(vport, FC_VPORT_FAILED); 3689 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 3690 "0263 Discovery Mailbox error: state: 0x%x : x%px x%px\n", 3691 vport->port_state, sparam_mbox, cfglink_mbox); 3692 lpfc_issue_clear_la(phba, vport); 3693 return; 3694 } 3695 3696 static void 3697 lpfc_enable_la(struct lpfc_hba *phba) 3698 { 3699 uint32_t control; 3700 struct lpfc_sli *psli = &phba->sli; 3701 spin_lock_irq(&phba->hbalock); 3702 psli->sli_flag |= LPFC_PROCESS_LA; 3703 if (phba->sli_rev <= LPFC_SLI_REV3) { 3704 control = readl(phba->HCregaddr); 3705 control |= HC_LAINT_ENA; 3706 writel(control, phba->HCregaddr); 3707 readl(phba->HCregaddr); /* flush */ 3708 } 3709 spin_unlock_irq(&phba->hbalock); 3710 } 3711 3712 static void 3713 lpfc_mbx_issue_link_down(struct lpfc_hba *phba) 3714 { 3715 lpfc_linkdown(phba); 3716 lpfc_enable_la(phba); 3717 lpfc_unregister_unused_fcf(phba); 3718 /* turn on Link Attention interrupts - no CLEAR_LA needed */ 3719 } 3720 3721 3722 /* 3723 * This routine handles processing a READ_TOPOLOGY mailbox 3724 * command upon completion. It is setup in the LPFC_MBOXQ 3725 * as the completion routine when the command is 3726 * handed off to the SLI layer. SLI4 only. 3727 */ 3728 void 3729 lpfc_mbx_cmpl_read_topology(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 3730 { 3731 struct lpfc_vport *vport = pmb->vport; 3732 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 3733 struct lpfc_mbx_read_top *la; 3734 struct lpfc_sli_ring *pring; 3735 MAILBOX_t *mb = &pmb->u.mb; 3736 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *)(pmb->ctx_buf); 3737 uint8_t attn_type; 3738 unsigned long iflags; 3739 3740 /* Unblock ELS traffic */ 3741 pring = lpfc_phba_elsring(phba); 3742 if (pring) 3743 pring->flag &= ~LPFC_STOP_IOCB_EVENT; 3744 3745 /* Check for error */ 3746 if (mb->mbxStatus) { 3747 lpfc_printf_log(phba, KERN_INFO, LOG_LINK_EVENT, 3748 "1307 READ_LA mbox error x%x state x%x\n", 3749 mb->mbxStatus, vport->port_state); 3750 lpfc_mbx_issue_link_down(phba); 3751 phba->link_state = LPFC_HBA_ERROR; 3752 goto lpfc_mbx_cmpl_read_topology_free_mbuf; 3753 } 3754 3755 la = (struct lpfc_mbx_read_top *) &pmb->u.mb.un.varReadTop; 3756 attn_type = bf_get(lpfc_mbx_read_top_att_type, la); 3757 3758 memcpy(&phba->alpa_map[0], mp->virt, 128); 3759 3760 spin_lock_irqsave(shost->host_lock, iflags); 3761 if (bf_get(lpfc_mbx_read_top_pb, la)) 3762 vport->fc_flag |= FC_BYPASSED_MODE; 3763 else 3764 vport->fc_flag &= ~FC_BYPASSED_MODE; 3765 spin_unlock_irqrestore(shost->host_lock, iflags); 3766 3767 if (phba->fc_eventTag <= la->eventTag) { 3768 phba->fc_stat.LinkMultiEvent++; 3769 if (attn_type == LPFC_ATT_LINK_UP) 3770 if (phba->fc_eventTag != 0) 3771 lpfc_linkdown(phba); 3772 } 3773 3774 phba->fc_eventTag = la->eventTag; 3775 if (phba->sli_rev < LPFC_SLI_REV4) { 3776 spin_lock_irqsave(&phba->hbalock, iflags); 3777 if (bf_get(lpfc_mbx_read_top_mm, la)) 3778 phba->sli.sli_flag |= LPFC_MENLO_MAINT; 3779 else 3780 phba->sli.sli_flag &= ~LPFC_MENLO_MAINT; 3781 spin_unlock_irqrestore(&phba->hbalock, iflags); 3782 } 3783 3784 phba->link_events++; 3785 if ((attn_type == LPFC_ATT_LINK_UP) && 3786 !(phba->sli.sli_flag & LPFC_MENLO_MAINT)) { 3787 phba->fc_stat.LinkUp++; 3788 if (phba->link_flag & LS_LOOPBACK_MODE) { 3789 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT, 3790 "1306 Link Up Event in loop back mode " 3791 "x%x received Data: x%x x%x x%x x%x\n", 3792 la->eventTag, phba->fc_eventTag, 3793 bf_get(lpfc_mbx_read_top_alpa_granted, 3794 la), 3795 bf_get(lpfc_mbx_read_top_link_spd, la), 3796 phba->alpa_map[0]); 3797 } else { 3798 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT, 3799 "1303 Link Up Event x%x received " 3800 "Data: x%x x%x x%x x%x x%x x%x %d\n", 3801 la->eventTag, phba->fc_eventTag, 3802 bf_get(lpfc_mbx_read_top_alpa_granted, 3803 la), 3804 bf_get(lpfc_mbx_read_top_link_spd, la), 3805 phba->alpa_map[0], 3806 bf_get(lpfc_mbx_read_top_mm, la), 3807 bf_get(lpfc_mbx_read_top_fa, la), 3808 phba->wait_4_mlo_maint_flg); 3809 } 3810 lpfc_mbx_process_link_up(phba, la); 3811 3812 if (phba->cmf_active_mode != LPFC_CFG_OFF) 3813 lpfc_cmf_signal_init(phba); 3814 3815 } else if (attn_type == LPFC_ATT_LINK_DOWN || 3816 attn_type == LPFC_ATT_UNEXP_WWPN) { 3817 phba->fc_stat.LinkDown++; 3818 if (phba->link_flag & LS_LOOPBACK_MODE) 3819 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT, 3820 "1308 Link Down Event in loop back mode " 3821 "x%x received " 3822 "Data: x%x x%x x%x\n", 3823 la->eventTag, phba->fc_eventTag, 3824 phba->pport->port_state, vport->fc_flag); 3825 else if (attn_type == LPFC_ATT_UNEXP_WWPN) 3826 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT, 3827 "1313 Link Down Unexpected FA WWPN Event x%x " 3828 "received Data: x%x x%x x%x x%x x%x\n", 3829 la->eventTag, phba->fc_eventTag, 3830 phba->pport->port_state, vport->fc_flag, 3831 bf_get(lpfc_mbx_read_top_mm, la), 3832 bf_get(lpfc_mbx_read_top_fa, la)); 3833 else 3834 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT, 3835 "1305 Link Down Event x%x received " 3836 "Data: x%x x%x x%x x%x x%x\n", 3837 la->eventTag, phba->fc_eventTag, 3838 phba->pport->port_state, vport->fc_flag, 3839 bf_get(lpfc_mbx_read_top_mm, la), 3840 bf_get(lpfc_mbx_read_top_fa, la)); 3841 lpfc_mbx_issue_link_down(phba); 3842 } 3843 if (phba->sli.sli_flag & LPFC_MENLO_MAINT && 3844 attn_type == LPFC_ATT_LINK_UP) { 3845 if (phba->link_state != LPFC_LINK_DOWN) { 3846 phba->fc_stat.LinkDown++; 3847 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT, 3848 "1312 Link Down Event x%x received " 3849 "Data: x%x x%x x%x\n", 3850 la->eventTag, phba->fc_eventTag, 3851 phba->pport->port_state, vport->fc_flag); 3852 lpfc_mbx_issue_link_down(phba); 3853 } else 3854 lpfc_enable_la(phba); 3855 3856 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT, 3857 "1310 Menlo Maint Mode Link up Event x%x rcvd " 3858 "Data: x%x x%x x%x\n", 3859 la->eventTag, phba->fc_eventTag, 3860 phba->pport->port_state, vport->fc_flag); 3861 /* 3862 * The cmnd that triggered this will be waiting for this 3863 * signal. 3864 */ 3865 /* WAKEUP for MENLO_SET_MODE or MENLO_RESET command. */ 3866 if (phba->wait_4_mlo_maint_flg) { 3867 phba->wait_4_mlo_maint_flg = 0; 3868 wake_up_interruptible(&phba->wait_4_mlo_m_q); 3869 } 3870 } 3871 3872 if ((phba->sli_rev < LPFC_SLI_REV4) && 3873 bf_get(lpfc_mbx_read_top_fa, la)) { 3874 if (phba->sli.sli_flag & LPFC_MENLO_MAINT) 3875 lpfc_issue_clear_la(phba, vport); 3876 lpfc_printf_log(phba, KERN_INFO, LOG_LINK_EVENT, 3877 "1311 fa %d\n", 3878 bf_get(lpfc_mbx_read_top_fa, la)); 3879 } 3880 3881 lpfc_mbx_cmpl_read_topology_free_mbuf: 3882 lpfc_mbuf_free(phba, mp->virt, mp->phys); 3883 kfree(mp); 3884 mempool_free(pmb, phba->mbox_mem_pool); 3885 return; 3886 } 3887 3888 /* 3889 * This routine handles processing a REG_LOGIN mailbox 3890 * command upon completion. It is setup in the LPFC_MBOXQ 3891 * as the completion routine when the command is 3892 * handed off to the SLI layer. 3893 */ 3894 void 3895 lpfc_mbx_cmpl_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 3896 { 3897 struct lpfc_vport *vport = pmb->vport; 3898 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *)(pmb->ctx_buf); 3899 struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *)pmb->ctx_ndlp; 3900 3901 pmb->ctx_buf = NULL; 3902 pmb->ctx_ndlp = NULL; 3903 3904 lpfc_printf_vlog(vport, KERN_INFO, LOG_SLI | LOG_NODE | LOG_DISCOVERY, 3905 "0002 rpi:%x DID:%x flg:%x %d x%px\n", 3906 ndlp->nlp_rpi, ndlp->nlp_DID, ndlp->nlp_flag, 3907 kref_read(&ndlp->kref), 3908 ndlp); 3909 if (ndlp->nlp_flag & NLP_REG_LOGIN_SEND) 3910 ndlp->nlp_flag &= ~NLP_REG_LOGIN_SEND; 3911 3912 if (ndlp->nlp_flag & NLP_IGNR_REG_CMPL || 3913 ndlp->nlp_state != NLP_STE_REG_LOGIN_ISSUE) { 3914 /* We rcvd a rscn after issuing this 3915 * mbox reg login, we may have cycled 3916 * back through the state and be 3917 * back at reg login state so this 3918 * mbox needs to be ignored becase 3919 * there is another reg login in 3920 * process. 3921 */ 3922 spin_lock_irq(&ndlp->lock); 3923 ndlp->nlp_flag &= ~NLP_IGNR_REG_CMPL; 3924 spin_unlock_irq(&ndlp->lock); 3925 3926 /* 3927 * We cannot leave the RPI registered because 3928 * if we go thru discovery again for this ndlp 3929 * a subsequent REG_RPI will fail. 3930 */ 3931 ndlp->nlp_flag |= NLP_RPI_REGISTERED; 3932 lpfc_unreg_rpi(vport, ndlp); 3933 } 3934 3935 /* Call state machine */ 3936 lpfc_disc_state_machine(vport, ndlp, pmb, NLP_EVT_CMPL_REG_LOGIN); 3937 3938 lpfc_mbuf_free(phba, mp->virt, mp->phys); 3939 kfree(mp); 3940 mempool_free(pmb, phba->mbox_mem_pool); 3941 /* decrement the node reference count held for this callback 3942 * function. 3943 */ 3944 lpfc_nlp_put(ndlp); 3945 3946 return; 3947 } 3948 3949 static void 3950 lpfc_mbx_cmpl_unreg_vpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 3951 { 3952 MAILBOX_t *mb = &pmb->u.mb; 3953 struct lpfc_vport *vport = pmb->vport; 3954 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 3955 3956 switch (mb->mbxStatus) { 3957 case 0x0011: 3958 case 0x0020: 3959 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE, 3960 "0911 cmpl_unreg_vpi, mb status = 0x%x\n", 3961 mb->mbxStatus); 3962 break; 3963 /* If VPI is busy, reset the HBA */ 3964 case 0x9700: 3965 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 3966 "2798 Unreg_vpi failed vpi 0x%x, mb status = 0x%x\n", 3967 vport->vpi, mb->mbxStatus); 3968 if (!(phba->pport->load_flag & FC_UNLOADING)) 3969 lpfc_workq_post_event(phba, NULL, NULL, 3970 LPFC_EVT_RESET_HBA); 3971 } 3972 spin_lock_irq(shost->host_lock); 3973 vport->vpi_state &= ~LPFC_VPI_REGISTERED; 3974 vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI; 3975 spin_unlock_irq(shost->host_lock); 3976 mempool_free(pmb, phba->mbox_mem_pool); 3977 lpfc_cleanup_vports_rrqs(vport, NULL); 3978 /* 3979 * This shost reference might have been taken at the beginning of 3980 * lpfc_vport_delete() 3981 */ 3982 if ((vport->load_flag & FC_UNLOADING) && (vport != phba->pport)) 3983 scsi_host_put(shost); 3984 } 3985 3986 int 3987 lpfc_mbx_unreg_vpi(struct lpfc_vport *vport) 3988 { 3989 struct lpfc_hba *phba = vport->phba; 3990 LPFC_MBOXQ_t *mbox; 3991 int rc; 3992 3993 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 3994 if (!mbox) 3995 return 1; 3996 3997 lpfc_unreg_vpi(phba, vport->vpi, mbox); 3998 mbox->vport = vport; 3999 mbox->mbox_cmpl = lpfc_mbx_cmpl_unreg_vpi; 4000 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT); 4001 if (rc == MBX_NOT_FINISHED) { 4002 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 4003 "1800 Could not issue unreg_vpi\n"); 4004 mempool_free(mbox, phba->mbox_mem_pool); 4005 return rc; 4006 } 4007 return 0; 4008 } 4009 4010 static void 4011 lpfc_mbx_cmpl_reg_vpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 4012 { 4013 struct lpfc_vport *vport = pmb->vport; 4014 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 4015 MAILBOX_t *mb = &pmb->u.mb; 4016 4017 switch (mb->mbxStatus) { 4018 case 0x0011: 4019 case 0x9601: 4020 case 0x9602: 4021 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE, 4022 "0912 cmpl_reg_vpi, mb status = 0x%x\n", 4023 mb->mbxStatus); 4024 lpfc_vport_set_state(vport, FC_VPORT_FAILED); 4025 spin_lock_irq(shost->host_lock); 4026 vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP); 4027 spin_unlock_irq(shost->host_lock); 4028 vport->fc_myDID = 0; 4029 4030 if ((vport->cfg_enable_fc4_type == LPFC_ENABLE_BOTH) || 4031 (vport->cfg_enable_fc4_type == LPFC_ENABLE_NVME)) { 4032 if (phba->nvmet_support) 4033 lpfc_nvmet_update_targetport(phba); 4034 else 4035 lpfc_nvme_update_localport(vport); 4036 } 4037 goto out; 4038 } 4039 4040 spin_lock_irq(shost->host_lock); 4041 vport->vpi_state |= LPFC_VPI_REGISTERED; 4042 vport->fc_flag &= ~FC_VPORT_NEEDS_REG_VPI; 4043 spin_unlock_irq(shost->host_lock); 4044 vport->num_disc_nodes = 0; 4045 /* go thru NPR list and issue ELS PLOGIs */ 4046 if (vport->fc_npr_cnt) 4047 lpfc_els_disc_plogi(vport); 4048 4049 if (!vport->num_disc_nodes) { 4050 spin_lock_irq(shost->host_lock); 4051 vport->fc_flag &= ~FC_NDISC_ACTIVE; 4052 spin_unlock_irq(shost->host_lock); 4053 lpfc_can_disctmo(vport); 4054 } 4055 vport->port_state = LPFC_VPORT_READY; 4056 4057 out: 4058 mempool_free(pmb, phba->mbox_mem_pool); 4059 return; 4060 } 4061 4062 /** 4063 * lpfc_create_static_vport - Read HBA config region to create static vports. 4064 * @phba: pointer to lpfc hba data structure. 4065 * 4066 * This routine issue a DUMP mailbox command for config region 22 to get 4067 * the list of static vports to be created. The function create vports 4068 * based on the information returned from the HBA. 4069 **/ 4070 void 4071 lpfc_create_static_vport(struct lpfc_hba *phba) 4072 { 4073 LPFC_MBOXQ_t *pmb = NULL; 4074 MAILBOX_t *mb; 4075 struct static_vport_info *vport_info; 4076 int mbx_wait_rc = 0, i; 4077 struct fc_vport_identifiers vport_id; 4078 struct fc_vport *new_fc_vport; 4079 struct Scsi_Host *shost; 4080 struct lpfc_vport *vport; 4081 uint16_t offset = 0; 4082 uint8_t *vport_buff; 4083 struct lpfc_dmabuf *mp; 4084 uint32_t byte_count = 0; 4085 4086 pmb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 4087 if (!pmb) { 4088 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 4089 "0542 lpfc_create_static_vport failed to" 4090 " allocate mailbox memory\n"); 4091 return; 4092 } 4093 memset(pmb, 0, sizeof(LPFC_MBOXQ_t)); 4094 mb = &pmb->u.mb; 4095 4096 vport_info = kzalloc(sizeof(struct static_vport_info), GFP_KERNEL); 4097 if (!vport_info) { 4098 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 4099 "0543 lpfc_create_static_vport failed to" 4100 " allocate vport_info\n"); 4101 mempool_free(pmb, phba->mbox_mem_pool); 4102 return; 4103 } 4104 4105 vport_buff = (uint8_t *) vport_info; 4106 do { 4107 /* free dma buffer from previous round */ 4108 if (pmb->ctx_buf) { 4109 mp = (struct lpfc_dmabuf *)pmb->ctx_buf; 4110 lpfc_mbuf_free(phba, mp->virt, mp->phys); 4111 kfree(mp); 4112 } 4113 if (lpfc_dump_static_vport(phba, pmb, offset)) 4114 goto out; 4115 4116 pmb->vport = phba->pport; 4117 mbx_wait_rc = lpfc_sli_issue_mbox_wait(phba, pmb, 4118 LPFC_MBOX_TMO); 4119 4120 if ((mbx_wait_rc != MBX_SUCCESS) || mb->mbxStatus) { 4121 lpfc_printf_log(phba, KERN_WARNING, LOG_INIT, 4122 "0544 lpfc_create_static_vport failed to" 4123 " issue dump mailbox command ret 0x%x " 4124 "status 0x%x\n", 4125 mbx_wait_rc, mb->mbxStatus); 4126 goto out; 4127 } 4128 4129 if (phba->sli_rev == LPFC_SLI_REV4) { 4130 byte_count = pmb->u.mqe.un.mb_words[5]; 4131 mp = (struct lpfc_dmabuf *)pmb->ctx_buf; 4132 if (byte_count > sizeof(struct static_vport_info) - 4133 offset) 4134 byte_count = sizeof(struct static_vport_info) 4135 - offset; 4136 memcpy(vport_buff + offset, mp->virt, byte_count); 4137 offset += byte_count; 4138 } else { 4139 if (mb->un.varDmp.word_cnt > 4140 sizeof(struct static_vport_info) - offset) 4141 mb->un.varDmp.word_cnt = 4142 sizeof(struct static_vport_info) 4143 - offset; 4144 byte_count = mb->un.varDmp.word_cnt; 4145 lpfc_sli_pcimem_bcopy(((uint8_t *)mb) + DMP_RSP_OFFSET, 4146 vport_buff + offset, 4147 byte_count); 4148 4149 offset += byte_count; 4150 } 4151 4152 } while (byte_count && 4153 offset < sizeof(struct static_vport_info)); 4154 4155 4156 if ((le32_to_cpu(vport_info->signature) != VPORT_INFO_SIG) || 4157 ((le32_to_cpu(vport_info->rev) & VPORT_INFO_REV_MASK) 4158 != VPORT_INFO_REV)) { 4159 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 4160 "0545 lpfc_create_static_vport bad" 4161 " information header 0x%x 0x%x\n", 4162 le32_to_cpu(vport_info->signature), 4163 le32_to_cpu(vport_info->rev) & 4164 VPORT_INFO_REV_MASK); 4165 4166 goto out; 4167 } 4168 4169 shost = lpfc_shost_from_vport(phba->pport); 4170 4171 for (i = 0; i < MAX_STATIC_VPORT_COUNT; i++) { 4172 memset(&vport_id, 0, sizeof(vport_id)); 4173 vport_id.port_name = wwn_to_u64(vport_info->vport_list[i].wwpn); 4174 vport_id.node_name = wwn_to_u64(vport_info->vport_list[i].wwnn); 4175 if (!vport_id.port_name || !vport_id.node_name) 4176 continue; 4177 4178 vport_id.roles = FC_PORT_ROLE_FCP_INITIATOR; 4179 vport_id.vport_type = FC_PORTTYPE_NPIV; 4180 vport_id.disable = false; 4181 new_fc_vport = fc_vport_create(shost, 0, &vport_id); 4182 4183 if (!new_fc_vport) { 4184 lpfc_printf_log(phba, KERN_WARNING, LOG_INIT, 4185 "0546 lpfc_create_static_vport failed to" 4186 " create vport\n"); 4187 continue; 4188 } 4189 4190 vport = *(struct lpfc_vport **)new_fc_vport->dd_data; 4191 vport->vport_flag |= STATIC_VPORT; 4192 } 4193 4194 out: 4195 kfree(vport_info); 4196 if (mbx_wait_rc != MBX_TIMEOUT) { 4197 if (pmb->ctx_buf) { 4198 mp = (struct lpfc_dmabuf *)pmb->ctx_buf; 4199 lpfc_mbuf_free(phba, mp->virt, mp->phys); 4200 kfree(mp); 4201 } 4202 mempool_free(pmb, phba->mbox_mem_pool); 4203 } 4204 4205 return; 4206 } 4207 4208 /* 4209 * This routine handles processing a Fabric REG_LOGIN mailbox 4210 * command upon completion. It is setup in the LPFC_MBOXQ 4211 * as the completion routine when the command is 4212 * handed off to the SLI layer. 4213 */ 4214 void 4215 lpfc_mbx_cmpl_fabric_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 4216 { 4217 struct lpfc_vport *vport = pmb->vport; 4218 MAILBOX_t *mb = &pmb->u.mb; 4219 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *)(pmb->ctx_buf); 4220 struct lpfc_nodelist *ndlp; 4221 struct Scsi_Host *shost; 4222 4223 ndlp = (struct lpfc_nodelist *)pmb->ctx_ndlp; 4224 pmb->ctx_ndlp = NULL; 4225 pmb->ctx_buf = NULL; 4226 4227 if (mb->mbxStatus) { 4228 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 4229 "0258 Register Fabric login error: 0x%x\n", 4230 mb->mbxStatus); 4231 lpfc_mbuf_free(phba, mp->virt, mp->phys); 4232 kfree(mp); 4233 mempool_free(pmb, phba->mbox_mem_pool); 4234 4235 if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) { 4236 /* FLOGI failed, use loop map to make discovery list */ 4237 lpfc_disc_list_loopmap(vport); 4238 4239 /* Start discovery */ 4240 lpfc_disc_start(vport); 4241 /* Decrement the reference count to ndlp after the 4242 * reference to the ndlp are done. 4243 */ 4244 lpfc_nlp_put(ndlp); 4245 return; 4246 } 4247 4248 lpfc_vport_set_state(vport, FC_VPORT_FAILED); 4249 /* Decrement the reference count to ndlp after the reference 4250 * to the ndlp are done. 4251 */ 4252 lpfc_nlp_put(ndlp); 4253 return; 4254 } 4255 4256 if (phba->sli_rev < LPFC_SLI_REV4) 4257 ndlp->nlp_rpi = mb->un.varWords[0]; 4258 ndlp->nlp_flag |= NLP_RPI_REGISTERED; 4259 ndlp->nlp_type |= NLP_FABRIC; 4260 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE); 4261 4262 if (vport->port_state == LPFC_FABRIC_CFG_LINK) { 4263 /* when physical port receive logo donot start 4264 * vport discovery */ 4265 if (!(vport->fc_flag & FC_LOGO_RCVD_DID_CHNG)) 4266 lpfc_start_fdiscs(phba); 4267 else { 4268 shost = lpfc_shost_from_vport(vport); 4269 spin_lock_irq(shost->host_lock); 4270 vport->fc_flag &= ~FC_LOGO_RCVD_DID_CHNG ; 4271 spin_unlock_irq(shost->host_lock); 4272 } 4273 lpfc_do_scr_ns_plogi(phba, vport); 4274 } 4275 4276 lpfc_mbuf_free(phba, mp->virt, mp->phys); 4277 kfree(mp); 4278 mempool_free(pmb, phba->mbox_mem_pool); 4279 4280 /* Drop the reference count from the mbox at the end after 4281 * all the current reference to the ndlp have been done. 4282 */ 4283 lpfc_nlp_put(ndlp); 4284 return; 4285 } 4286 4287 /* 4288 * This routine will issue a GID_FT for each FC4 Type supported 4289 * by the driver. ALL GID_FTs must complete before discovery is started. 4290 */ 4291 int 4292 lpfc_issue_gidft(struct lpfc_vport *vport) 4293 { 4294 /* Good status, issue CT Request to NameServer */ 4295 if ((vport->cfg_enable_fc4_type == LPFC_ENABLE_BOTH) || 4296 (vport->cfg_enable_fc4_type == LPFC_ENABLE_FCP)) { 4297 if (lpfc_ns_cmd(vport, SLI_CTNS_GID_FT, 0, SLI_CTPT_FCP)) { 4298 /* Cannot issue NameServer FCP Query, so finish up 4299 * discovery 4300 */ 4301 lpfc_printf_vlog(vport, KERN_ERR, 4302 LOG_TRACE_EVENT, 4303 "0604 %s FC TYPE %x %s\n", 4304 "Failed to issue GID_FT to ", 4305 FC_TYPE_FCP, 4306 "Finishing discovery."); 4307 return 0; 4308 } 4309 vport->gidft_inp++; 4310 } 4311 4312 if ((vport->cfg_enable_fc4_type == LPFC_ENABLE_BOTH) || 4313 (vport->cfg_enable_fc4_type == LPFC_ENABLE_NVME)) { 4314 if (lpfc_ns_cmd(vport, SLI_CTNS_GID_FT, 0, SLI_CTPT_NVME)) { 4315 /* Cannot issue NameServer NVME Query, so finish up 4316 * discovery 4317 */ 4318 lpfc_printf_vlog(vport, KERN_ERR, 4319 LOG_TRACE_EVENT, 4320 "0605 %s FC_TYPE %x %s %d\n", 4321 "Failed to issue GID_FT to ", 4322 FC_TYPE_NVME, 4323 "Finishing discovery: gidftinp ", 4324 vport->gidft_inp); 4325 if (vport->gidft_inp == 0) 4326 return 0; 4327 } else 4328 vport->gidft_inp++; 4329 } 4330 return vport->gidft_inp; 4331 } 4332 4333 /** 4334 * lpfc_issue_gidpt - issue a GID_PT for all N_Ports 4335 * @vport: The virtual port for which this call is being executed. 4336 * 4337 * This routine will issue a GID_PT to get a list of all N_Ports 4338 * 4339 * Return value : 4340 * 0 - Failure to issue a GID_PT 4341 * 1 - GID_PT issued 4342 **/ 4343 int 4344 lpfc_issue_gidpt(struct lpfc_vport *vport) 4345 { 4346 /* Good status, issue CT Request to NameServer */ 4347 if (lpfc_ns_cmd(vport, SLI_CTNS_GID_PT, 0, GID_PT_N_PORT)) { 4348 /* Cannot issue NameServer FCP Query, so finish up 4349 * discovery 4350 */ 4351 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 4352 "0606 %s Port TYPE %x %s\n", 4353 "Failed to issue GID_PT to ", 4354 GID_PT_N_PORT, 4355 "Finishing discovery."); 4356 return 0; 4357 } 4358 vport->gidft_inp++; 4359 return 1; 4360 } 4361 4362 /* 4363 * This routine handles processing a NameServer REG_LOGIN mailbox 4364 * command upon completion. It is setup in the LPFC_MBOXQ 4365 * as the completion routine when the command is 4366 * handed off to the SLI layer. 4367 */ 4368 void 4369 lpfc_mbx_cmpl_ns_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 4370 { 4371 MAILBOX_t *mb = &pmb->u.mb; 4372 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *)(pmb->ctx_buf); 4373 struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *)pmb->ctx_ndlp; 4374 struct lpfc_vport *vport = pmb->vport; 4375 int rc; 4376 4377 pmb->ctx_buf = NULL; 4378 pmb->ctx_ndlp = NULL; 4379 vport->gidft_inp = 0; 4380 4381 if (mb->mbxStatus) { 4382 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 4383 "0260 Register NameServer error: 0x%x\n", 4384 mb->mbxStatus); 4385 4386 out: 4387 /* decrement the node reference count held for this 4388 * callback function. 4389 */ 4390 lpfc_nlp_put(ndlp); 4391 lpfc_mbuf_free(phba, mp->virt, mp->phys); 4392 kfree(mp); 4393 mempool_free(pmb, phba->mbox_mem_pool); 4394 4395 /* If the node is not registered with the scsi or nvme 4396 * transport, remove the fabric node. The failed reg_login 4397 * is terminal. 4398 */ 4399 if (!(ndlp->fc4_xpt_flags & (SCSI_XPT_REGD | NVME_XPT_REGD))) { 4400 spin_lock_irq(&ndlp->lock); 4401 ndlp->nlp_flag &= ~NLP_NPR_2B_DISC; 4402 spin_unlock_irq(&ndlp->lock); 4403 lpfc_nlp_not_used(ndlp); 4404 } 4405 4406 if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) { 4407 /* 4408 * RegLogin failed, use loop map to make discovery 4409 * list 4410 */ 4411 lpfc_disc_list_loopmap(vport); 4412 4413 /* Start discovery */ 4414 lpfc_disc_start(vport); 4415 return; 4416 } 4417 lpfc_vport_set_state(vport, FC_VPORT_FAILED); 4418 return; 4419 } 4420 4421 if (phba->sli_rev < LPFC_SLI_REV4) 4422 ndlp->nlp_rpi = mb->un.varWords[0]; 4423 ndlp->nlp_flag |= NLP_RPI_REGISTERED; 4424 ndlp->nlp_type |= NLP_FABRIC; 4425 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE); 4426 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE | LOG_DISCOVERY, 4427 "0003 rpi:%x DID:%x flg:%x %d x%px\n", 4428 ndlp->nlp_rpi, ndlp->nlp_DID, ndlp->nlp_flag, 4429 kref_read(&ndlp->kref), 4430 ndlp); 4431 4432 if (vport->port_state < LPFC_VPORT_READY) { 4433 /* Link up discovery requires Fabric registration. */ 4434 lpfc_ns_cmd(vport, SLI_CTNS_RNN_ID, 0, 0); 4435 lpfc_ns_cmd(vport, SLI_CTNS_RSNN_NN, 0, 0); 4436 lpfc_ns_cmd(vport, SLI_CTNS_RSPN_ID, 0, 0); 4437 lpfc_ns_cmd(vport, SLI_CTNS_RFT_ID, 0, 0); 4438 4439 if ((vport->cfg_enable_fc4_type == LPFC_ENABLE_BOTH) || 4440 (vport->cfg_enable_fc4_type == LPFC_ENABLE_FCP)) 4441 lpfc_ns_cmd(vport, SLI_CTNS_RFF_ID, 0, FC_TYPE_FCP); 4442 4443 if ((vport->cfg_enable_fc4_type == LPFC_ENABLE_BOTH) || 4444 (vport->cfg_enable_fc4_type == LPFC_ENABLE_NVME)) 4445 lpfc_ns_cmd(vport, SLI_CTNS_RFF_ID, 0, 4446 FC_TYPE_NVME); 4447 4448 /* Issue SCR just before NameServer GID_FT Query */ 4449 lpfc_issue_els_scr(vport, 0); 4450 4451 /* Link was bounced or a Fabric LOGO occurred. Start EDC 4452 * with initial FW values provided the congestion mode is 4453 * not off. Note that signals may or may not be supported 4454 * by the adapter but FPIN is provided by default for 1 4455 * or both missing signals support. 4456 */ 4457 if (phba->cmf_active_mode != LPFC_CFG_OFF) { 4458 phba->cgn_reg_fpin = phba->cgn_init_reg_fpin; 4459 phba->cgn_reg_signal = phba->cgn_init_reg_signal; 4460 rc = lpfc_issue_els_edc(vport, 0); 4461 lpfc_printf_log(phba, KERN_INFO, 4462 LOG_INIT | LOG_ELS | LOG_DISCOVERY, 4463 "4220 EDC issue error x%x, Data: x%x\n", 4464 rc, phba->cgn_init_reg_signal); 4465 } else { 4466 lpfc_issue_els_rdf(vport, 0); 4467 } 4468 } 4469 4470 vport->fc_ns_retry = 0; 4471 if (lpfc_issue_gidft(vport) == 0) 4472 goto out; 4473 4474 /* 4475 * At this point in time we may need to wait for multiple 4476 * SLI_CTNS_GID_FT CT commands to complete before we start discovery. 4477 * 4478 * decrement the node reference count held for this 4479 * callback function. 4480 */ 4481 lpfc_nlp_put(ndlp); 4482 lpfc_mbuf_free(phba, mp->virt, mp->phys); 4483 kfree(mp); 4484 mempool_free(pmb, phba->mbox_mem_pool); 4485 4486 return; 4487 } 4488 4489 /* 4490 * This routine handles processing a Fabric Controller REG_LOGIN mailbox 4491 * command upon completion. It is setup in the LPFC_MBOXQ 4492 * as the completion routine when the command is handed off to the SLI layer. 4493 */ 4494 void 4495 lpfc_mbx_cmpl_fc_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 4496 { 4497 struct lpfc_vport *vport = pmb->vport; 4498 MAILBOX_t *mb = &pmb->u.mb; 4499 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *)(pmb->ctx_buf); 4500 struct lpfc_nodelist *ndlp; 4501 4502 ndlp = (struct lpfc_nodelist *)pmb->ctx_ndlp; 4503 pmb->ctx_ndlp = NULL; 4504 pmb->ctx_buf = NULL; 4505 4506 if (mb->mbxStatus) { 4507 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 4508 "0933 %s: Register FC login error: 0x%x\n", 4509 __func__, mb->mbxStatus); 4510 goto out; 4511 } 4512 4513 lpfc_check_nlp_post_devloss(vport, ndlp); 4514 4515 if (phba->sli_rev < LPFC_SLI_REV4) 4516 ndlp->nlp_rpi = mb->un.varWords[0]; 4517 4518 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE, 4519 "0934 %s: Complete FC x%x RegLogin rpi x%x ste x%x\n", 4520 __func__, ndlp->nlp_DID, ndlp->nlp_rpi, 4521 ndlp->nlp_state); 4522 4523 ndlp->nlp_flag |= NLP_RPI_REGISTERED; 4524 ndlp->nlp_flag &= ~NLP_REG_LOGIN_SEND; 4525 ndlp->nlp_type |= NLP_FABRIC; 4526 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE); 4527 4528 out: 4529 lpfc_mbuf_free(phba, mp->virt, mp->phys); 4530 kfree(mp); 4531 mempool_free(pmb, phba->mbox_mem_pool); 4532 4533 /* Drop the reference count from the mbox at the end after 4534 * all the current reference to the ndlp have been done. 4535 */ 4536 lpfc_nlp_put(ndlp); 4537 } 4538 4539 static void 4540 lpfc_register_remote_port(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) 4541 { 4542 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 4543 struct fc_rport *rport; 4544 struct lpfc_rport_data *rdata; 4545 struct fc_rport_identifiers rport_ids; 4546 struct lpfc_hba *phba = vport->phba; 4547 unsigned long flags; 4548 4549 if (vport->cfg_enable_fc4_type == LPFC_ENABLE_NVME) 4550 return; 4551 4552 /* Remote port has reappeared. Re-register w/ FC transport */ 4553 rport_ids.node_name = wwn_to_u64(ndlp->nlp_nodename.u.wwn); 4554 rport_ids.port_name = wwn_to_u64(ndlp->nlp_portname.u.wwn); 4555 rport_ids.port_id = ndlp->nlp_DID; 4556 rport_ids.roles = FC_RPORT_ROLE_UNKNOWN; 4557 4558 4559 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT, 4560 "rport add: did:x%x flg:x%x type x%x", 4561 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type); 4562 4563 /* Don't add the remote port if unloading. */ 4564 if (vport->load_flag & FC_UNLOADING) 4565 return; 4566 4567 /* 4568 * Disassociate any older association between this ndlp and rport 4569 */ 4570 if (ndlp->rport) { 4571 rdata = ndlp->rport->dd_data; 4572 rdata->pnode = NULL; 4573 } 4574 4575 ndlp->rport = rport = fc_remote_port_add(shost, 0, &rport_ids); 4576 if (!rport) { 4577 dev_printk(KERN_WARNING, &phba->pcidev->dev, 4578 "Warning: fc_remote_port_add failed\n"); 4579 return; 4580 } 4581 4582 /* Successful port add. Complete initializing node data */ 4583 rport->maxframe_size = ndlp->nlp_maxframe; 4584 rport->supported_classes = ndlp->nlp_class_sup; 4585 rdata = rport->dd_data; 4586 rdata->pnode = lpfc_nlp_get(ndlp); 4587 if (!rdata->pnode) { 4588 dev_warn(&phba->pcidev->dev, 4589 "Warning - node ref failed. Unreg rport\n"); 4590 fc_remote_port_delete(rport); 4591 ndlp->rport = NULL; 4592 return; 4593 } 4594 4595 spin_lock_irqsave(&ndlp->lock, flags); 4596 ndlp->fc4_xpt_flags |= SCSI_XPT_REGD; 4597 spin_unlock_irqrestore(&ndlp->lock, flags); 4598 4599 if (ndlp->nlp_type & NLP_FCP_TARGET) 4600 rport_ids.roles |= FC_PORT_ROLE_FCP_TARGET; 4601 if (ndlp->nlp_type & NLP_FCP_INITIATOR) 4602 rport_ids.roles |= FC_PORT_ROLE_FCP_INITIATOR; 4603 if (ndlp->nlp_type & NLP_NVME_INITIATOR) 4604 rport_ids.roles |= FC_PORT_ROLE_NVME_INITIATOR; 4605 if (ndlp->nlp_type & NLP_NVME_TARGET) 4606 rport_ids.roles |= FC_PORT_ROLE_NVME_TARGET; 4607 if (ndlp->nlp_type & NLP_NVME_DISCOVERY) 4608 rport_ids.roles |= FC_PORT_ROLE_NVME_DISCOVERY; 4609 4610 if (rport_ids.roles != FC_RPORT_ROLE_UNKNOWN) 4611 fc_remote_port_rolechg(rport, rport_ids.roles); 4612 4613 lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_NODE, 4614 "3183 %s rport x%px DID x%x, role x%x refcnt %d\n", 4615 __func__, rport, rport->port_id, rport->roles, 4616 kref_read(&ndlp->kref)); 4617 4618 if ((rport->scsi_target_id != -1) && 4619 (rport->scsi_target_id < LPFC_MAX_TARGET)) { 4620 ndlp->nlp_sid = rport->scsi_target_id; 4621 } 4622 4623 return; 4624 } 4625 4626 static void 4627 lpfc_unregister_remote_port(struct lpfc_nodelist *ndlp) 4628 { 4629 struct fc_rport *rport = ndlp->rport; 4630 struct lpfc_vport *vport = ndlp->vport; 4631 4632 if (vport->cfg_enable_fc4_type == LPFC_ENABLE_NVME) 4633 return; 4634 4635 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT, 4636 "rport delete: did:x%x flg:x%x type x%x", 4637 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type); 4638 4639 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE, 4640 "3184 rport unregister x%06x, rport x%px " 4641 "xptflg x%x refcnt %d\n", 4642 ndlp->nlp_DID, rport, ndlp->fc4_xpt_flags, 4643 kref_read(&ndlp->kref)); 4644 4645 fc_remote_port_delete(rport); 4646 lpfc_nlp_put(ndlp); 4647 } 4648 4649 static void 4650 lpfc_nlp_counters(struct lpfc_vport *vport, int state, int count) 4651 { 4652 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 4653 unsigned long iflags; 4654 4655 spin_lock_irqsave(shost->host_lock, iflags); 4656 switch (state) { 4657 case NLP_STE_UNUSED_NODE: 4658 vport->fc_unused_cnt += count; 4659 break; 4660 case NLP_STE_PLOGI_ISSUE: 4661 vport->fc_plogi_cnt += count; 4662 break; 4663 case NLP_STE_ADISC_ISSUE: 4664 vport->fc_adisc_cnt += count; 4665 break; 4666 case NLP_STE_REG_LOGIN_ISSUE: 4667 vport->fc_reglogin_cnt += count; 4668 break; 4669 case NLP_STE_PRLI_ISSUE: 4670 vport->fc_prli_cnt += count; 4671 break; 4672 case NLP_STE_UNMAPPED_NODE: 4673 vport->fc_unmap_cnt += count; 4674 break; 4675 case NLP_STE_MAPPED_NODE: 4676 vport->fc_map_cnt += count; 4677 break; 4678 case NLP_STE_NPR_NODE: 4679 if (vport->fc_npr_cnt == 0 && count == -1) 4680 vport->fc_npr_cnt = 0; 4681 else 4682 vport->fc_npr_cnt += count; 4683 break; 4684 } 4685 spin_unlock_irqrestore(shost->host_lock, iflags); 4686 } 4687 4688 /* Register a node with backend if not already done */ 4689 void 4690 lpfc_nlp_reg_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) 4691 { 4692 unsigned long iflags; 4693 4694 lpfc_check_nlp_post_devloss(vport, ndlp); 4695 4696 spin_lock_irqsave(&ndlp->lock, iflags); 4697 if (ndlp->fc4_xpt_flags & NLP_XPT_REGD) { 4698 /* Already registered with backend, trigger rescan */ 4699 spin_unlock_irqrestore(&ndlp->lock, iflags); 4700 4701 if (ndlp->fc4_xpt_flags & NVME_XPT_REGD && 4702 ndlp->nlp_type & (NLP_NVME_TARGET | NLP_NVME_DISCOVERY)) { 4703 lpfc_nvme_rescan_port(vport, ndlp); 4704 } 4705 return; 4706 } 4707 4708 ndlp->fc4_xpt_flags |= NLP_XPT_REGD; 4709 spin_unlock_irqrestore(&ndlp->lock, iflags); 4710 4711 if (lpfc_valid_xpt_node(ndlp)) { 4712 vport->phba->nport_event_cnt++; 4713 /* 4714 * Tell the fc transport about the port, if we haven't 4715 * already. If we have, and it's a scsi entity, be 4716 */ 4717 lpfc_register_remote_port(vport, ndlp); 4718 } 4719 4720 /* We are done if we do not have any NVME remote node */ 4721 if (!(ndlp->nlp_fc4_type & NLP_FC4_NVME)) 4722 return; 4723 4724 /* Notify the NVME transport of this new rport. */ 4725 if (vport->phba->sli_rev >= LPFC_SLI_REV4 && 4726 ndlp->nlp_fc4_type & NLP_FC4_NVME) { 4727 if (vport->phba->nvmet_support == 0) { 4728 /* Register this rport with the transport. 4729 * Only NVME Target Rports are registered with 4730 * the transport. 4731 */ 4732 if (ndlp->nlp_type & NLP_NVME_TARGET) { 4733 vport->phba->nport_event_cnt++; 4734 lpfc_nvme_register_port(vport, ndlp); 4735 } 4736 } else { 4737 /* Just take an NDLP ref count since the 4738 * target does not register rports. 4739 */ 4740 lpfc_nlp_get(ndlp); 4741 } 4742 } 4743 } 4744 4745 /* Unregister a node with backend if not already done */ 4746 void 4747 lpfc_nlp_unreg_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) 4748 { 4749 unsigned long iflags; 4750 4751 spin_lock_irqsave(&ndlp->lock, iflags); 4752 if (!(ndlp->fc4_xpt_flags & NLP_XPT_REGD)) { 4753 spin_unlock_irqrestore(&ndlp->lock, iflags); 4754 lpfc_printf_vlog(vport, KERN_INFO, LOG_SLI, 4755 "0999 %s Not regd: ndlp x%px rport x%px DID " 4756 "x%x FLG x%x XPT x%x\n", 4757 __func__, ndlp, ndlp->rport, ndlp->nlp_DID, 4758 ndlp->nlp_flag, ndlp->fc4_xpt_flags); 4759 return; 4760 } 4761 4762 ndlp->fc4_xpt_flags &= ~NLP_XPT_REGD; 4763 spin_unlock_irqrestore(&ndlp->lock, iflags); 4764 4765 if (ndlp->rport && 4766 ndlp->fc4_xpt_flags & SCSI_XPT_REGD) { 4767 vport->phba->nport_event_cnt++; 4768 lpfc_unregister_remote_port(ndlp); 4769 } else if (!ndlp->rport) { 4770 lpfc_printf_vlog(vport, KERN_INFO, LOG_SLI, 4771 "1999 %s NDLP in devloss x%px DID x%x FLG x%x" 4772 " XPT x%x refcnt %d\n", 4773 __func__, ndlp, ndlp->nlp_DID, ndlp->nlp_flag, 4774 ndlp->fc4_xpt_flags, 4775 kref_read(&ndlp->kref)); 4776 } 4777 4778 if (ndlp->fc4_xpt_flags & NVME_XPT_REGD) { 4779 vport->phba->nport_event_cnt++; 4780 if (vport->phba->nvmet_support == 0) { 4781 /* Start devloss if target. */ 4782 if (ndlp->nlp_type & NLP_NVME_TARGET) 4783 lpfc_nvme_unregister_port(vport, ndlp); 4784 } else { 4785 /* NVMET has no upcall. */ 4786 lpfc_nlp_put(ndlp); 4787 } 4788 } 4789 4790 } 4791 4792 /* 4793 * Adisc state change handling 4794 */ 4795 static void 4796 lpfc_handle_adisc_state(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 4797 int new_state) 4798 { 4799 switch (new_state) { 4800 /* 4801 * Any state to ADISC_ISSUE 4802 * Do nothing, adisc cmpl handling will trigger state changes 4803 */ 4804 case NLP_STE_ADISC_ISSUE: 4805 break; 4806 4807 /* 4808 * ADISC_ISSUE to mapped states 4809 * Trigger a registration with backend, it will be nop if 4810 * already registered 4811 */ 4812 case NLP_STE_UNMAPPED_NODE: 4813 ndlp->nlp_type |= NLP_FC_NODE; 4814 fallthrough; 4815 case NLP_STE_MAPPED_NODE: 4816 ndlp->nlp_flag &= ~NLP_NODEV_REMOVE; 4817 lpfc_nlp_reg_node(vport, ndlp); 4818 break; 4819 4820 /* 4821 * ADISC_ISSUE to non-mapped states 4822 * We are moving from ADISC_ISSUE to a non-mapped state because 4823 * ADISC failed, we would have skipped unregistering with 4824 * backend, attempt it now 4825 */ 4826 case NLP_STE_NPR_NODE: 4827 ndlp->nlp_flag &= ~NLP_RCV_PLOGI; 4828 fallthrough; 4829 default: 4830 lpfc_nlp_unreg_node(vport, ndlp); 4831 break; 4832 } 4833 4834 } 4835 4836 static void 4837 lpfc_nlp_state_cleanup(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 4838 int old_state, int new_state) 4839 { 4840 /* Trap ADISC changes here */ 4841 if (new_state == NLP_STE_ADISC_ISSUE || 4842 old_state == NLP_STE_ADISC_ISSUE) { 4843 lpfc_handle_adisc_state(vport, ndlp, new_state); 4844 return; 4845 } 4846 4847 if (new_state == NLP_STE_UNMAPPED_NODE) { 4848 ndlp->nlp_flag &= ~NLP_NODEV_REMOVE; 4849 ndlp->nlp_type |= NLP_FC_NODE; 4850 } 4851 if (new_state == NLP_STE_MAPPED_NODE) 4852 ndlp->nlp_flag &= ~NLP_NODEV_REMOVE; 4853 if (new_state == NLP_STE_NPR_NODE) 4854 ndlp->nlp_flag &= ~NLP_RCV_PLOGI; 4855 4856 /* Reg/Unreg for FCP and NVME Transport interface */ 4857 if ((old_state == NLP_STE_MAPPED_NODE || 4858 old_state == NLP_STE_UNMAPPED_NODE)) { 4859 /* For nodes marked for ADISC, Handle unreg in ADISC cmpl 4860 * if linkup. In linkdown do unreg_node 4861 */ 4862 if (!(ndlp->nlp_flag & NLP_NPR_ADISC) || 4863 !lpfc_is_link_up(vport->phba)) 4864 lpfc_nlp_unreg_node(vport, ndlp); 4865 } 4866 4867 if (new_state == NLP_STE_MAPPED_NODE || 4868 new_state == NLP_STE_UNMAPPED_NODE) 4869 lpfc_nlp_reg_node(vport, ndlp); 4870 4871 if ((new_state == NLP_STE_MAPPED_NODE) && 4872 (vport->stat_data_enabled)) { 4873 /* 4874 * A new target is discovered, if there is no buffer for 4875 * statistical data collection allocate buffer. 4876 */ 4877 ndlp->lat_data = kcalloc(LPFC_MAX_BUCKET_COUNT, 4878 sizeof(struct lpfc_scsicmd_bkt), 4879 GFP_KERNEL); 4880 4881 if (!ndlp->lat_data) 4882 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 4883 "0286 lpfc_nlp_state_cleanup failed to " 4884 "allocate statistical data buffer DID " 4885 "0x%x\n", ndlp->nlp_DID); 4886 } 4887 /* 4888 * If the node just added to Mapped list was an FCP target, 4889 * but the remote port registration failed or assigned a target 4890 * id outside the presentable range - move the node to the 4891 * Unmapped List. 4892 */ 4893 if ((new_state == NLP_STE_MAPPED_NODE) && 4894 (ndlp->nlp_type & NLP_FCP_TARGET) && 4895 (!ndlp->rport || 4896 ndlp->rport->scsi_target_id == -1 || 4897 ndlp->rport->scsi_target_id >= LPFC_MAX_TARGET)) { 4898 spin_lock_irq(&ndlp->lock); 4899 ndlp->nlp_flag |= NLP_TGT_NO_SCSIID; 4900 spin_unlock_irq(&ndlp->lock); 4901 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE); 4902 } 4903 } 4904 4905 static char * 4906 lpfc_nlp_state_name(char *buffer, size_t size, int state) 4907 { 4908 static char *states[] = { 4909 [NLP_STE_UNUSED_NODE] = "UNUSED", 4910 [NLP_STE_PLOGI_ISSUE] = "PLOGI", 4911 [NLP_STE_ADISC_ISSUE] = "ADISC", 4912 [NLP_STE_REG_LOGIN_ISSUE] = "REGLOGIN", 4913 [NLP_STE_PRLI_ISSUE] = "PRLI", 4914 [NLP_STE_LOGO_ISSUE] = "LOGO", 4915 [NLP_STE_UNMAPPED_NODE] = "UNMAPPED", 4916 [NLP_STE_MAPPED_NODE] = "MAPPED", 4917 [NLP_STE_NPR_NODE] = "NPR", 4918 }; 4919 4920 if (state < NLP_STE_MAX_STATE && states[state]) 4921 strlcpy(buffer, states[state], size); 4922 else 4923 snprintf(buffer, size, "unknown (%d)", state); 4924 return buffer; 4925 } 4926 4927 void 4928 lpfc_nlp_set_state(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 4929 int state) 4930 { 4931 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 4932 int old_state = ndlp->nlp_state; 4933 int node_dropped = ndlp->nlp_flag & NLP_DROPPED; 4934 char name1[16], name2[16]; 4935 4936 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE, 4937 "0904 NPort state transition x%06x, %s -> %s\n", 4938 ndlp->nlp_DID, 4939 lpfc_nlp_state_name(name1, sizeof(name1), old_state), 4940 lpfc_nlp_state_name(name2, sizeof(name2), state)); 4941 4942 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE, 4943 "node statechg did:x%x old:%d ste:%d", 4944 ndlp->nlp_DID, old_state, state); 4945 4946 if (node_dropped && old_state == NLP_STE_UNUSED_NODE && 4947 state != NLP_STE_UNUSED_NODE) { 4948 ndlp->nlp_flag &= ~NLP_DROPPED; 4949 lpfc_nlp_get(ndlp); 4950 } 4951 4952 if (old_state == NLP_STE_NPR_NODE && 4953 state != NLP_STE_NPR_NODE) 4954 lpfc_cancel_retry_delay_tmo(vport, ndlp); 4955 if (old_state == NLP_STE_UNMAPPED_NODE) { 4956 ndlp->nlp_flag &= ~NLP_TGT_NO_SCSIID; 4957 ndlp->nlp_type &= ~NLP_FC_NODE; 4958 } 4959 4960 if (list_empty(&ndlp->nlp_listp)) { 4961 spin_lock_irq(shost->host_lock); 4962 list_add_tail(&ndlp->nlp_listp, &vport->fc_nodes); 4963 spin_unlock_irq(shost->host_lock); 4964 } else if (old_state) 4965 lpfc_nlp_counters(vport, old_state, -1); 4966 4967 ndlp->nlp_state = state; 4968 lpfc_nlp_counters(vport, state, 1); 4969 lpfc_nlp_state_cleanup(vport, ndlp, old_state, state); 4970 } 4971 4972 void 4973 lpfc_enqueue_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) 4974 { 4975 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 4976 4977 if (list_empty(&ndlp->nlp_listp)) { 4978 spin_lock_irq(shost->host_lock); 4979 list_add_tail(&ndlp->nlp_listp, &vport->fc_nodes); 4980 spin_unlock_irq(shost->host_lock); 4981 } 4982 } 4983 4984 void 4985 lpfc_dequeue_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) 4986 { 4987 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 4988 4989 lpfc_cancel_retry_delay_tmo(vport, ndlp); 4990 if (ndlp->nlp_state && !list_empty(&ndlp->nlp_listp)) 4991 lpfc_nlp_counters(vport, ndlp->nlp_state, -1); 4992 spin_lock_irq(shost->host_lock); 4993 list_del_init(&ndlp->nlp_listp); 4994 spin_unlock_irq(shost->host_lock); 4995 lpfc_nlp_state_cleanup(vport, ndlp, ndlp->nlp_state, 4996 NLP_STE_UNUSED_NODE); 4997 } 4998 4999 /** 5000 * lpfc_initialize_node - Initialize all fields of node object 5001 * @vport: Pointer to Virtual Port object. 5002 * @ndlp: Pointer to FC node object. 5003 * @did: FC_ID of the node. 5004 * 5005 * This function is always called when node object need to be initialized. 5006 * It initializes all the fields of the node object. Although the reference 5007 * to phba from @ndlp can be obtained indirectly through it's reference to 5008 * @vport, a direct reference to phba is taken here by @ndlp. This is due 5009 * to the life-span of the @ndlp might go beyond the existence of @vport as 5010 * the final release of ndlp is determined by its reference count. And, the 5011 * operation on @ndlp needs the reference to phba. 5012 **/ 5013 static inline void 5014 lpfc_initialize_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 5015 uint32_t did) 5016 { 5017 INIT_LIST_HEAD(&ndlp->els_retry_evt.evt_listp); 5018 INIT_LIST_HEAD(&ndlp->dev_loss_evt.evt_listp); 5019 timer_setup(&ndlp->nlp_delayfunc, lpfc_els_retry_delay, 0); 5020 INIT_LIST_HEAD(&ndlp->recovery_evt.evt_listp); 5021 5022 ndlp->nlp_DID = did; 5023 ndlp->vport = vport; 5024 ndlp->phba = vport->phba; 5025 ndlp->nlp_sid = NLP_NO_SID; 5026 ndlp->nlp_fc4_type = NLP_FC4_NONE; 5027 kref_init(&ndlp->kref); 5028 atomic_set(&ndlp->cmd_pending, 0); 5029 ndlp->cmd_qdepth = vport->cfg_tgt_queue_depth; 5030 ndlp->nlp_defer_did = NLP_EVT_NOTHING_PENDING; 5031 } 5032 5033 void 5034 lpfc_drop_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) 5035 { 5036 /* 5037 * Use of lpfc_drop_node and UNUSED list: lpfc_drop_node should 5038 * be used if we wish to issue the "last" lpfc_nlp_put() to remove 5039 * the ndlp from the vport. The ndlp marked as UNUSED on the list 5040 * until ALL other outstanding threads have completed. We check 5041 * that the ndlp not already in the UNUSED state before we proceed. 5042 */ 5043 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE) 5044 return; 5045 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNUSED_NODE); 5046 ndlp->nlp_flag |= NLP_DROPPED; 5047 if (vport->phba->sli_rev == LPFC_SLI_REV4) { 5048 lpfc_cleanup_vports_rrqs(vport, ndlp); 5049 lpfc_unreg_rpi(vport, ndlp); 5050 } 5051 5052 lpfc_nlp_put(ndlp); 5053 return; 5054 } 5055 5056 /* 5057 * Start / ReStart rescue timer for Discovery / RSCN handling 5058 */ 5059 void 5060 lpfc_set_disctmo(struct lpfc_vport *vport) 5061 { 5062 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 5063 struct lpfc_hba *phba = vport->phba; 5064 uint32_t tmo; 5065 5066 if (vport->port_state == LPFC_LOCAL_CFG_LINK) { 5067 /* For FAN, timeout should be greater than edtov */ 5068 tmo = (((phba->fc_edtov + 999) / 1000) + 1); 5069 } else { 5070 /* Normal discovery timeout should be > than ELS/CT timeout 5071 * FC spec states we need 3 * ratov for CT requests 5072 */ 5073 tmo = ((phba->fc_ratov * 3) + 3); 5074 } 5075 5076 5077 if (!timer_pending(&vport->fc_disctmo)) { 5078 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, 5079 "set disc timer: tmo:x%x state:x%x flg:x%x", 5080 tmo, vport->port_state, vport->fc_flag); 5081 } 5082 5083 mod_timer(&vport->fc_disctmo, jiffies + msecs_to_jiffies(1000 * tmo)); 5084 spin_lock_irq(shost->host_lock); 5085 vport->fc_flag |= FC_DISC_TMO; 5086 spin_unlock_irq(shost->host_lock); 5087 5088 /* Start Discovery Timer state <hba_state> */ 5089 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, 5090 "0247 Start Discovery Timer state x%x " 5091 "Data: x%x x%lx x%x x%x\n", 5092 vport->port_state, tmo, 5093 (unsigned long)&vport->fc_disctmo, vport->fc_plogi_cnt, 5094 vport->fc_adisc_cnt); 5095 5096 return; 5097 } 5098 5099 /* 5100 * Cancel rescue timer for Discovery / RSCN handling 5101 */ 5102 int 5103 lpfc_can_disctmo(struct lpfc_vport *vport) 5104 { 5105 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 5106 unsigned long iflags; 5107 5108 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, 5109 "can disc timer: state:x%x rtry:x%x flg:x%x", 5110 vport->port_state, vport->fc_ns_retry, vport->fc_flag); 5111 5112 /* Turn off discovery timer if its running */ 5113 if (vport->fc_flag & FC_DISC_TMO || 5114 timer_pending(&vport->fc_disctmo)) { 5115 spin_lock_irqsave(shost->host_lock, iflags); 5116 vport->fc_flag &= ~FC_DISC_TMO; 5117 spin_unlock_irqrestore(shost->host_lock, iflags); 5118 del_timer_sync(&vport->fc_disctmo); 5119 spin_lock_irqsave(&vport->work_port_lock, iflags); 5120 vport->work_port_events &= ~WORKER_DISC_TMO; 5121 spin_unlock_irqrestore(&vport->work_port_lock, iflags); 5122 } 5123 5124 /* Cancel Discovery Timer state <hba_state> */ 5125 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, 5126 "0248 Cancel Discovery Timer state x%x " 5127 "Data: x%x x%x x%x\n", 5128 vport->port_state, vport->fc_flag, 5129 vport->fc_plogi_cnt, vport->fc_adisc_cnt); 5130 return 0; 5131 } 5132 5133 /* 5134 * Check specified ring for outstanding IOCB on the SLI queue 5135 * Return true if iocb matches the specified nport 5136 */ 5137 int 5138 lpfc_check_sli_ndlp(struct lpfc_hba *phba, 5139 struct lpfc_sli_ring *pring, 5140 struct lpfc_iocbq *iocb, 5141 struct lpfc_nodelist *ndlp) 5142 { 5143 struct lpfc_vport *vport = ndlp->vport; 5144 u8 ulp_command; 5145 u16 ulp_context; 5146 u32 remote_id; 5147 5148 if (iocb->vport != vport) 5149 return 0; 5150 5151 ulp_command = get_job_cmnd(phba, iocb); 5152 ulp_context = get_job_ulpcontext(phba, iocb); 5153 remote_id = get_job_els_rsp64_did(phba, iocb); 5154 5155 if (pring->ringno == LPFC_ELS_RING) { 5156 switch (ulp_command) { 5157 case CMD_GEN_REQUEST64_CR: 5158 if (iocb->context_un.ndlp == ndlp) 5159 return 1; 5160 fallthrough; 5161 case CMD_ELS_REQUEST64_CR: 5162 if (remote_id == ndlp->nlp_DID) 5163 return 1; 5164 fallthrough; 5165 case CMD_XMIT_ELS_RSP64_CX: 5166 if (iocb->context1 == (uint8_t *) ndlp) 5167 return 1; 5168 } 5169 } else if (pring->ringno == LPFC_FCP_RING) { 5170 /* Skip match check if waiting to relogin to FCP target */ 5171 if ((ndlp->nlp_type & NLP_FCP_TARGET) && 5172 (ndlp->nlp_flag & NLP_DELAY_TMO)) { 5173 return 0; 5174 } 5175 if (ulp_context == ndlp->nlp_rpi) 5176 return 1; 5177 } 5178 return 0; 5179 } 5180 5181 static void 5182 __lpfc_dequeue_nport_iocbs(struct lpfc_hba *phba, 5183 struct lpfc_nodelist *ndlp, struct lpfc_sli_ring *pring, 5184 struct list_head *dequeue_list) 5185 { 5186 struct lpfc_iocbq *iocb, *next_iocb; 5187 5188 list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) { 5189 /* Check to see if iocb matches the nport */ 5190 if (lpfc_check_sli_ndlp(phba, pring, iocb, ndlp)) 5191 /* match, dequeue */ 5192 list_move_tail(&iocb->list, dequeue_list); 5193 } 5194 } 5195 5196 static void 5197 lpfc_sli3_dequeue_nport_iocbs(struct lpfc_hba *phba, 5198 struct lpfc_nodelist *ndlp, struct list_head *dequeue_list) 5199 { 5200 struct lpfc_sli *psli = &phba->sli; 5201 uint32_t i; 5202 5203 spin_lock_irq(&phba->hbalock); 5204 for (i = 0; i < psli->num_rings; i++) 5205 __lpfc_dequeue_nport_iocbs(phba, ndlp, &psli->sli3_ring[i], 5206 dequeue_list); 5207 spin_unlock_irq(&phba->hbalock); 5208 } 5209 5210 static void 5211 lpfc_sli4_dequeue_nport_iocbs(struct lpfc_hba *phba, 5212 struct lpfc_nodelist *ndlp, struct list_head *dequeue_list) 5213 { 5214 struct lpfc_sli_ring *pring; 5215 struct lpfc_queue *qp = NULL; 5216 5217 spin_lock_irq(&phba->hbalock); 5218 list_for_each_entry(qp, &phba->sli4_hba.lpfc_wq_list, wq_list) { 5219 pring = qp->pring; 5220 if (!pring) 5221 continue; 5222 spin_lock(&pring->ring_lock); 5223 __lpfc_dequeue_nport_iocbs(phba, ndlp, pring, dequeue_list); 5224 spin_unlock(&pring->ring_lock); 5225 } 5226 spin_unlock_irq(&phba->hbalock); 5227 } 5228 5229 /* 5230 * Free resources / clean up outstanding I/Os 5231 * associated with nlp_rpi in the LPFC_NODELIST entry. 5232 */ 5233 static int 5234 lpfc_no_rpi(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp) 5235 { 5236 LIST_HEAD(completions); 5237 5238 lpfc_fabric_abort_nport(ndlp); 5239 5240 /* 5241 * Everything that matches on txcmplq will be returned 5242 * by firmware with a no rpi error. 5243 */ 5244 if (ndlp->nlp_flag & NLP_RPI_REGISTERED) { 5245 if (phba->sli_rev != LPFC_SLI_REV4) 5246 lpfc_sli3_dequeue_nport_iocbs(phba, ndlp, &completions); 5247 else 5248 lpfc_sli4_dequeue_nport_iocbs(phba, ndlp, &completions); 5249 } 5250 5251 /* Cancel all the IOCBs from the completions list */ 5252 lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT, 5253 IOERR_SLI_ABORTED); 5254 5255 return 0; 5256 } 5257 5258 /** 5259 * lpfc_nlp_logo_unreg - Unreg mailbox completion handler before LOGO 5260 * @phba: Pointer to HBA context object. 5261 * @pmb: Pointer to mailbox object. 5262 * 5263 * This function will issue an ELS LOGO command after completing 5264 * the UNREG_RPI. 5265 **/ 5266 static void 5267 lpfc_nlp_logo_unreg(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 5268 { 5269 struct lpfc_vport *vport = pmb->vport; 5270 struct lpfc_nodelist *ndlp; 5271 5272 ndlp = (struct lpfc_nodelist *)(pmb->ctx_ndlp); 5273 if (!ndlp) 5274 return; 5275 lpfc_issue_els_logo(vport, ndlp, 0); 5276 mempool_free(pmb, phba->mbox_mem_pool); 5277 5278 /* Check to see if there are any deferred events to process */ 5279 if ((ndlp->nlp_flag & NLP_UNREG_INP) && 5280 (ndlp->nlp_defer_did != NLP_EVT_NOTHING_PENDING)) { 5281 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, 5282 "1434 UNREG cmpl deferred logo x%x " 5283 "on NPort x%x Data: x%x x%px\n", 5284 ndlp->nlp_rpi, ndlp->nlp_DID, 5285 ndlp->nlp_defer_did, ndlp); 5286 5287 ndlp->nlp_flag &= ~NLP_UNREG_INP; 5288 ndlp->nlp_defer_did = NLP_EVT_NOTHING_PENDING; 5289 lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0); 5290 } else { 5291 /* NLP_RELEASE_RPI is only set for SLI4 ports. */ 5292 if (ndlp->nlp_flag & NLP_RELEASE_RPI) { 5293 lpfc_sli4_free_rpi(vport->phba, ndlp->nlp_rpi); 5294 spin_lock_irq(&ndlp->lock); 5295 ndlp->nlp_flag &= ~NLP_RELEASE_RPI; 5296 ndlp->nlp_rpi = LPFC_RPI_ALLOC_ERROR; 5297 spin_unlock_irq(&ndlp->lock); 5298 } 5299 spin_lock_irq(&ndlp->lock); 5300 ndlp->nlp_flag &= ~NLP_UNREG_INP; 5301 spin_unlock_irq(&ndlp->lock); 5302 } 5303 } 5304 5305 /* 5306 * Sets the mailbox completion handler to be used for the 5307 * unreg_rpi command. The handler varies based on the state of 5308 * the port and what will be happening to the rpi next. 5309 */ 5310 static void 5311 lpfc_set_unreg_login_mbx_cmpl(struct lpfc_hba *phba, struct lpfc_vport *vport, 5312 struct lpfc_nodelist *ndlp, LPFC_MBOXQ_t *mbox) 5313 { 5314 unsigned long iflags; 5315 5316 /* Driver always gets a reference on the mailbox job 5317 * in support of async jobs. 5318 */ 5319 mbox->ctx_ndlp = lpfc_nlp_get(ndlp); 5320 if (!mbox->ctx_ndlp) 5321 return; 5322 5323 if (ndlp->nlp_flag & NLP_ISSUE_LOGO) { 5324 mbox->mbox_cmpl = lpfc_nlp_logo_unreg; 5325 5326 } else if (phba->sli_rev == LPFC_SLI_REV4 && 5327 (!(vport->load_flag & FC_UNLOADING)) && 5328 (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) >= 5329 LPFC_SLI_INTF_IF_TYPE_2) && 5330 (kref_read(&ndlp->kref) > 0)) { 5331 mbox->mbox_cmpl = lpfc_sli4_unreg_rpi_cmpl_clr; 5332 } else { 5333 if (vport->load_flag & FC_UNLOADING) { 5334 if (phba->sli_rev == LPFC_SLI_REV4) { 5335 spin_lock_irqsave(&ndlp->lock, iflags); 5336 ndlp->nlp_flag |= NLP_RELEASE_RPI; 5337 spin_unlock_irqrestore(&ndlp->lock, iflags); 5338 } 5339 } 5340 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl; 5341 } 5342 } 5343 5344 /* 5345 * Free rpi associated with LPFC_NODELIST entry. 5346 * This routine is called from lpfc_freenode(), when we are removing 5347 * a LPFC_NODELIST entry. It is also called if the driver initiates a 5348 * LOGO that completes successfully, and we are waiting to PLOGI back 5349 * to the remote NPort. In addition, it is called after we receive 5350 * and unsolicated ELS cmd, send back a rsp, the rsp completes and 5351 * we are waiting to PLOGI back to the remote NPort. 5352 */ 5353 int 5354 lpfc_unreg_rpi(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) 5355 { 5356 struct lpfc_hba *phba = vport->phba; 5357 LPFC_MBOXQ_t *mbox; 5358 int rc, acc_plogi = 1; 5359 uint16_t rpi; 5360 5361 if (ndlp->nlp_flag & NLP_RPI_REGISTERED || 5362 ndlp->nlp_flag & NLP_REG_LOGIN_SEND) { 5363 if (ndlp->nlp_flag & NLP_REG_LOGIN_SEND) 5364 lpfc_printf_vlog(vport, KERN_INFO, 5365 LOG_NODE | LOG_DISCOVERY, 5366 "3366 RPI x%x needs to be " 5367 "unregistered nlp_flag x%x " 5368 "did x%x\n", 5369 ndlp->nlp_rpi, ndlp->nlp_flag, 5370 ndlp->nlp_DID); 5371 5372 /* If there is already an UNREG in progress for this ndlp, 5373 * no need to queue up another one. 5374 */ 5375 if (ndlp->nlp_flag & NLP_UNREG_INP) { 5376 lpfc_printf_vlog(vport, KERN_INFO, 5377 LOG_NODE | LOG_DISCOVERY, 5378 "1436 unreg_rpi SKIP UNREG x%x on " 5379 "NPort x%x deferred x%x flg x%x " 5380 "Data: x%px\n", 5381 ndlp->nlp_rpi, ndlp->nlp_DID, 5382 ndlp->nlp_defer_did, 5383 ndlp->nlp_flag, ndlp); 5384 goto out; 5385 } 5386 5387 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 5388 if (mbox) { 5389 /* SLI4 ports require the physical rpi value. */ 5390 rpi = ndlp->nlp_rpi; 5391 if (phba->sli_rev == LPFC_SLI_REV4) 5392 rpi = phba->sli4_hba.rpi_ids[ndlp->nlp_rpi]; 5393 5394 lpfc_unreg_login(phba, vport->vpi, rpi, mbox); 5395 mbox->vport = vport; 5396 lpfc_set_unreg_login_mbx_cmpl(phba, vport, ndlp, mbox); 5397 if (!mbox->ctx_ndlp) { 5398 mempool_free(mbox, phba->mbox_mem_pool); 5399 return 1; 5400 } 5401 5402 if (mbox->mbox_cmpl == lpfc_sli4_unreg_rpi_cmpl_clr) 5403 /* 5404 * accept PLOGIs after unreg_rpi_cmpl 5405 */ 5406 acc_plogi = 0; 5407 if (((ndlp->nlp_DID & Fabric_DID_MASK) != 5408 Fabric_DID_MASK) && 5409 (!(vport->fc_flag & FC_OFFLINE_MODE))) 5410 ndlp->nlp_flag |= NLP_UNREG_INP; 5411 5412 lpfc_printf_vlog(vport, KERN_INFO, 5413 LOG_NODE | LOG_DISCOVERY, 5414 "1433 unreg_rpi UNREG x%x on " 5415 "NPort x%x deferred flg x%x " 5416 "Data:x%px\n", 5417 ndlp->nlp_rpi, ndlp->nlp_DID, 5418 ndlp->nlp_flag, ndlp); 5419 5420 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT); 5421 if (rc == MBX_NOT_FINISHED) { 5422 ndlp->nlp_flag &= ~NLP_UNREG_INP; 5423 mempool_free(mbox, phba->mbox_mem_pool); 5424 acc_plogi = 1; 5425 lpfc_nlp_put(ndlp); 5426 } 5427 } else { 5428 lpfc_printf_vlog(vport, KERN_INFO, 5429 LOG_NODE | LOG_DISCOVERY, 5430 "1444 Failed to allocate mempool " 5431 "unreg_rpi UNREG x%x, " 5432 "DID x%x, flag x%x, " 5433 "ndlp x%px\n", 5434 ndlp->nlp_rpi, ndlp->nlp_DID, 5435 ndlp->nlp_flag, ndlp); 5436 5437 /* Because mempool_alloc failed, we 5438 * will issue a LOGO here and keep the rpi alive if 5439 * not unloading. 5440 */ 5441 if (!(vport->load_flag & FC_UNLOADING)) { 5442 ndlp->nlp_flag &= ~NLP_UNREG_INP; 5443 lpfc_issue_els_logo(vport, ndlp, 0); 5444 ndlp->nlp_prev_state = ndlp->nlp_state; 5445 lpfc_nlp_set_state(vport, ndlp, 5446 NLP_STE_NPR_NODE); 5447 } 5448 5449 return 1; 5450 } 5451 lpfc_no_rpi(phba, ndlp); 5452 out: 5453 if (phba->sli_rev != LPFC_SLI_REV4) 5454 ndlp->nlp_rpi = 0; 5455 ndlp->nlp_flag &= ~NLP_RPI_REGISTERED; 5456 ndlp->nlp_flag &= ~NLP_NPR_ADISC; 5457 if (acc_plogi) 5458 ndlp->nlp_flag &= ~NLP_LOGO_ACC; 5459 return 1; 5460 } 5461 ndlp->nlp_flag &= ~NLP_LOGO_ACC; 5462 return 0; 5463 } 5464 5465 /** 5466 * lpfc_unreg_hba_rpis - Unregister rpis registered to the hba. 5467 * @phba: pointer to lpfc hba data structure. 5468 * 5469 * This routine is invoked to unregister all the currently registered RPIs 5470 * to the HBA. 5471 **/ 5472 void 5473 lpfc_unreg_hba_rpis(struct lpfc_hba *phba) 5474 { 5475 struct lpfc_vport **vports; 5476 struct lpfc_nodelist *ndlp; 5477 struct Scsi_Host *shost; 5478 int i; 5479 5480 vports = lpfc_create_vport_work_array(phba); 5481 if (!vports) { 5482 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 5483 "2884 Vport array allocation failed \n"); 5484 return; 5485 } 5486 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) { 5487 shost = lpfc_shost_from_vport(vports[i]); 5488 spin_lock_irq(shost->host_lock); 5489 list_for_each_entry(ndlp, &vports[i]->fc_nodes, nlp_listp) { 5490 if (ndlp->nlp_flag & NLP_RPI_REGISTERED) { 5491 /* The mempool_alloc might sleep */ 5492 spin_unlock_irq(shost->host_lock); 5493 lpfc_unreg_rpi(vports[i], ndlp); 5494 spin_lock_irq(shost->host_lock); 5495 } 5496 } 5497 spin_unlock_irq(shost->host_lock); 5498 } 5499 lpfc_destroy_vport_work_array(phba, vports); 5500 } 5501 5502 void 5503 lpfc_unreg_all_rpis(struct lpfc_vport *vport) 5504 { 5505 struct lpfc_hba *phba = vport->phba; 5506 LPFC_MBOXQ_t *mbox; 5507 int rc; 5508 5509 if (phba->sli_rev == LPFC_SLI_REV4) { 5510 lpfc_sli4_unreg_all_rpis(vport); 5511 return; 5512 } 5513 5514 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 5515 if (mbox) { 5516 lpfc_unreg_login(phba, vport->vpi, LPFC_UNREG_ALL_RPIS_VPORT, 5517 mbox); 5518 mbox->vport = vport; 5519 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl; 5520 mbox->ctx_ndlp = NULL; 5521 rc = lpfc_sli_issue_mbox_wait(phba, mbox, LPFC_MBOX_TMO); 5522 if (rc != MBX_TIMEOUT) 5523 mempool_free(mbox, phba->mbox_mem_pool); 5524 5525 if ((rc == MBX_TIMEOUT) || (rc == MBX_NOT_FINISHED)) 5526 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 5527 "1836 Could not issue " 5528 "unreg_login(all_rpis) status %d\n", 5529 rc); 5530 } 5531 } 5532 5533 void 5534 lpfc_unreg_default_rpis(struct lpfc_vport *vport) 5535 { 5536 struct lpfc_hba *phba = vport->phba; 5537 LPFC_MBOXQ_t *mbox; 5538 int rc; 5539 5540 /* Unreg DID is an SLI3 operation. */ 5541 if (phba->sli_rev > LPFC_SLI_REV3) 5542 return; 5543 5544 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 5545 if (mbox) { 5546 lpfc_unreg_did(phba, vport->vpi, LPFC_UNREG_ALL_DFLT_RPIS, 5547 mbox); 5548 mbox->vport = vport; 5549 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl; 5550 mbox->ctx_ndlp = NULL; 5551 rc = lpfc_sli_issue_mbox_wait(phba, mbox, LPFC_MBOX_TMO); 5552 if (rc != MBX_TIMEOUT) 5553 mempool_free(mbox, phba->mbox_mem_pool); 5554 5555 if ((rc == MBX_TIMEOUT) || (rc == MBX_NOT_FINISHED)) 5556 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 5557 "1815 Could not issue " 5558 "unreg_did (default rpis) status %d\n", 5559 rc); 5560 } 5561 } 5562 5563 /* 5564 * Free resources associated with LPFC_NODELIST entry 5565 * so it can be freed. 5566 */ 5567 static int 5568 lpfc_cleanup_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) 5569 { 5570 struct lpfc_hba *phba = vport->phba; 5571 LPFC_MBOXQ_t *mb, *nextmb; 5572 struct lpfc_dmabuf *mp; 5573 5574 /* Cleanup node for NPort <nlp_DID> */ 5575 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE, 5576 "0900 Cleanup node for NPort x%x " 5577 "Data: x%x x%x x%x\n", 5578 ndlp->nlp_DID, ndlp->nlp_flag, 5579 ndlp->nlp_state, ndlp->nlp_rpi); 5580 lpfc_dequeue_node(vport, ndlp); 5581 5582 /* Don't need to clean up REG_LOGIN64 cmds for Default RPI cleanup */ 5583 5584 /* cleanup any ndlp on mbox q waiting for reglogin cmpl */ 5585 if ((mb = phba->sli.mbox_active)) { 5586 if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) && 5587 !(mb->mbox_flag & LPFC_MBX_IMED_UNREG) && 5588 (ndlp == (struct lpfc_nodelist *)mb->ctx_ndlp)) { 5589 mb->ctx_ndlp = NULL; 5590 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl; 5591 } 5592 } 5593 5594 spin_lock_irq(&phba->hbalock); 5595 /* Cleanup REG_LOGIN completions which are not yet processed */ 5596 list_for_each_entry(mb, &phba->sli.mboxq_cmpl, list) { 5597 if ((mb->u.mb.mbxCommand != MBX_REG_LOGIN64) || 5598 (mb->mbox_flag & LPFC_MBX_IMED_UNREG) || 5599 (ndlp != (struct lpfc_nodelist *)mb->ctx_ndlp)) 5600 continue; 5601 5602 mb->ctx_ndlp = NULL; 5603 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl; 5604 } 5605 5606 list_for_each_entry_safe(mb, nextmb, &phba->sli.mboxq, list) { 5607 if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) && 5608 !(mb->mbox_flag & LPFC_MBX_IMED_UNREG) && 5609 (ndlp == (struct lpfc_nodelist *)mb->ctx_ndlp)) { 5610 mp = (struct lpfc_dmabuf *)(mb->ctx_buf); 5611 if (mp) { 5612 __lpfc_mbuf_free(phba, mp->virt, mp->phys); 5613 kfree(mp); 5614 } 5615 list_del(&mb->list); 5616 mempool_free(mb, phba->mbox_mem_pool); 5617 /* We shall not invoke the lpfc_nlp_put to decrement 5618 * the ndlp reference count as we are in the process 5619 * of lpfc_nlp_release. 5620 */ 5621 } 5622 } 5623 spin_unlock_irq(&phba->hbalock); 5624 5625 lpfc_els_abort(phba, ndlp); 5626 5627 spin_lock_irq(&ndlp->lock); 5628 ndlp->nlp_flag &= ~NLP_DELAY_TMO; 5629 spin_unlock_irq(&ndlp->lock); 5630 5631 ndlp->nlp_last_elscmd = 0; 5632 del_timer_sync(&ndlp->nlp_delayfunc); 5633 5634 list_del_init(&ndlp->els_retry_evt.evt_listp); 5635 list_del_init(&ndlp->dev_loss_evt.evt_listp); 5636 list_del_init(&ndlp->recovery_evt.evt_listp); 5637 lpfc_cleanup_vports_rrqs(vport, ndlp); 5638 5639 if (phba->sli_rev == LPFC_SLI_REV4) 5640 ndlp->nlp_flag |= NLP_RELEASE_RPI; 5641 5642 return 0; 5643 } 5644 5645 static int 5646 lpfc_matchdid(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 5647 uint32_t did) 5648 { 5649 D_ID mydid, ndlpdid, matchdid; 5650 5651 if (did == Bcast_DID) 5652 return 0; 5653 5654 /* First check for Direct match */ 5655 if (ndlp->nlp_DID == did) 5656 return 1; 5657 5658 /* Next check for area/domain identically equals 0 match */ 5659 mydid.un.word = vport->fc_myDID; 5660 if ((mydid.un.b.domain == 0) && (mydid.un.b.area == 0)) { 5661 return 0; 5662 } 5663 5664 matchdid.un.word = did; 5665 ndlpdid.un.word = ndlp->nlp_DID; 5666 if (matchdid.un.b.id == ndlpdid.un.b.id) { 5667 if ((mydid.un.b.domain == matchdid.un.b.domain) && 5668 (mydid.un.b.area == matchdid.un.b.area)) { 5669 /* This code is supposed to match the ID 5670 * for a private loop device that is 5671 * connect to fl_port. But we need to 5672 * check that the port did not just go 5673 * from pt2pt to fabric or we could end 5674 * up matching ndlp->nlp_DID 000001 to 5675 * fabric DID 0x20101 5676 */ 5677 if ((ndlpdid.un.b.domain == 0) && 5678 (ndlpdid.un.b.area == 0)) { 5679 if (ndlpdid.un.b.id && 5680 vport->phba->fc_topology == 5681 LPFC_TOPOLOGY_LOOP) 5682 return 1; 5683 } 5684 return 0; 5685 } 5686 5687 matchdid.un.word = ndlp->nlp_DID; 5688 if ((mydid.un.b.domain == ndlpdid.un.b.domain) && 5689 (mydid.un.b.area == ndlpdid.un.b.area)) { 5690 if ((matchdid.un.b.domain == 0) && 5691 (matchdid.un.b.area == 0)) { 5692 if (matchdid.un.b.id) 5693 return 1; 5694 } 5695 } 5696 } 5697 return 0; 5698 } 5699 5700 /* Search for a nodelist entry */ 5701 static struct lpfc_nodelist * 5702 __lpfc_findnode_did(struct lpfc_vport *vport, uint32_t did) 5703 { 5704 struct lpfc_nodelist *ndlp; 5705 uint32_t data1; 5706 5707 list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) { 5708 if (lpfc_matchdid(vport, ndlp, did)) { 5709 data1 = (((uint32_t)ndlp->nlp_state << 24) | 5710 ((uint32_t)ndlp->nlp_xri << 16) | 5711 ((uint32_t)ndlp->nlp_type << 8) 5712 ); 5713 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE, 5714 "0929 FIND node DID " 5715 "Data: x%px x%x x%x x%x x%x x%px\n", 5716 ndlp, ndlp->nlp_DID, 5717 ndlp->nlp_flag, data1, ndlp->nlp_rpi, 5718 ndlp->active_rrqs_xri_bitmap); 5719 return ndlp; 5720 } 5721 } 5722 5723 /* FIND node did <did> NOT FOUND */ 5724 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE, 5725 "0932 FIND node did x%x NOT FOUND.\n", did); 5726 return NULL; 5727 } 5728 5729 struct lpfc_nodelist * 5730 lpfc_findnode_did(struct lpfc_vport *vport, uint32_t did) 5731 { 5732 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 5733 struct lpfc_nodelist *ndlp; 5734 unsigned long iflags; 5735 5736 spin_lock_irqsave(shost->host_lock, iflags); 5737 ndlp = __lpfc_findnode_did(vport, did); 5738 spin_unlock_irqrestore(shost->host_lock, iflags); 5739 return ndlp; 5740 } 5741 5742 struct lpfc_nodelist * 5743 lpfc_findnode_mapped(struct lpfc_vport *vport) 5744 { 5745 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 5746 struct lpfc_nodelist *ndlp; 5747 uint32_t data1; 5748 unsigned long iflags; 5749 5750 spin_lock_irqsave(shost->host_lock, iflags); 5751 5752 list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) { 5753 if (ndlp->nlp_state == NLP_STE_UNMAPPED_NODE || 5754 ndlp->nlp_state == NLP_STE_MAPPED_NODE) { 5755 data1 = (((uint32_t)ndlp->nlp_state << 24) | 5756 ((uint32_t)ndlp->nlp_xri << 16) | 5757 ((uint32_t)ndlp->nlp_type << 8) | 5758 ((uint32_t)ndlp->nlp_rpi & 0xff)); 5759 spin_unlock_irqrestore(shost->host_lock, iflags); 5760 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE, 5761 "2025 FIND node DID " 5762 "Data: x%px x%x x%x x%x x%px\n", 5763 ndlp, ndlp->nlp_DID, 5764 ndlp->nlp_flag, data1, 5765 ndlp->active_rrqs_xri_bitmap); 5766 return ndlp; 5767 } 5768 } 5769 spin_unlock_irqrestore(shost->host_lock, iflags); 5770 5771 /* FIND node did <did> NOT FOUND */ 5772 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE, 5773 "2026 FIND mapped did NOT FOUND.\n"); 5774 return NULL; 5775 } 5776 5777 struct lpfc_nodelist * 5778 lpfc_setup_disc_node(struct lpfc_vport *vport, uint32_t did) 5779 { 5780 struct lpfc_nodelist *ndlp; 5781 5782 ndlp = lpfc_findnode_did(vport, did); 5783 if (!ndlp) { 5784 if (vport->phba->nvmet_support) 5785 return NULL; 5786 if ((vport->fc_flag & FC_RSCN_MODE) != 0 && 5787 lpfc_rscn_payload_check(vport, did) == 0) 5788 return NULL; 5789 ndlp = lpfc_nlp_init(vport, did); 5790 if (!ndlp) 5791 return NULL; 5792 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE); 5793 5794 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, 5795 "6453 Setup New Node 2B_DISC x%x " 5796 "Data:x%x x%x x%x\n", 5797 ndlp->nlp_DID, ndlp->nlp_flag, 5798 ndlp->nlp_state, vport->fc_flag); 5799 5800 spin_lock_irq(&ndlp->lock); 5801 ndlp->nlp_flag |= NLP_NPR_2B_DISC; 5802 spin_unlock_irq(&ndlp->lock); 5803 return ndlp; 5804 } 5805 5806 /* The NVME Target does not want to actively manage an rport. 5807 * The goal is to allow the target to reset its state and clear 5808 * pending IO in preparation for the initiator to recover. 5809 */ 5810 if ((vport->fc_flag & FC_RSCN_MODE) && 5811 !(vport->fc_flag & FC_NDISC_ACTIVE)) { 5812 if (lpfc_rscn_payload_check(vport, did)) { 5813 5814 /* Since this node is marked for discovery, 5815 * delay timeout is not needed. 5816 */ 5817 lpfc_cancel_retry_delay_tmo(vport, ndlp); 5818 5819 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, 5820 "6455 Setup RSCN Node 2B_DISC x%x " 5821 "Data:x%x x%x x%x\n", 5822 ndlp->nlp_DID, ndlp->nlp_flag, 5823 ndlp->nlp_state, vport->fc_flag); 5824 5825 /* NVME Target mode waits until rport is known to be 5826 * impacted by the RSCN before it transitions. No 5827 * active management - just go to NPR provided the 5828 * node had a valid login. 5829 */ 5830 if (vport->phba->nvmet_support) 5831 return ndlp; 5832 5833 /* If we've already received a PLOGI from this NPort 5834 * we don't need to try to discover it again. 5835 */ 5836 if (ndlp->nlp_flag & NLP_RCV_PLOGI && 5837 !(ndlp->nlp_type & 5838 (NLP_FCP_TARGET | NLP_NVME_TARGET))) 5839 return NULL; 5840 5841 ndlp->nlp_prev_state = ndlp->nlp_state; 5842 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE); 5843 5844 spin_lock_irq(&ndlp->lock); 5845 ndlp->nlp_flag |= NLP_NPR_2B_DISC; 5846 spin_unlock_irq(&ndlp->lock); 5847 } else { 5848 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, 5849 "6456 Skip Setup RSCN Node x%x " 5850 "Data:x%x x%x x%x\n", 5851 ndlp->nlp_DID, ndlp->nlp_flag, 5852 ndlp->nlp_state, vport->fc_flag); 5853 ndlp = NULL; 5854 } 5855 } else { 5856 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, 5857 "6457 Setup Active Node 2B_DISC x%x " 5858 "Data:x%x x%x x%x\n", 5859 ndlp->nlp_DID, ndlp->nlp_flag, 5860 ndlp->nlp_state, vport->fc_flag); 5861 5862 /* If the initiator received a PLOGI from this NPort or if the 5863 * initiator is already in the process of discovery on it, 5864 * there's no need to try to discover it again. 5865 */ 5866 if (ndlp->nlp_state == NLP_STE_ADISC_ISSUE || 5867 ndlp->nlp_state == NLP_STE_PLOGI_ISSUE || 5868 (!vport->phba->nvmet_support && 5869 ndlp->nlp_flag & NLP_RCV_PLOGI)) 5870 return NULL; 5871 5872 if (vport->phba->nvmet_support) 5873 return ndlp; 5874 5875 /* Moving to NPR state clears unsolicited flags and 5876 * allows for rediscovery 5877 */ 5878 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE); 5879 5880 spin_lock_irq(&ndlp->lock); 5881 ndlp->nlp_flag |= NLP_NPR_2B_DISC; 5882 spin_unlock_irq(&ndlp->lock); 5883 } 5884 return ndlp; 5885 } 5886 5887 /* Build a list of nodes to discover based on the loopmap */ 5888 void 5889 lpfc_disc_list_loopmap(struct lpfc_vport *vport) 5890 { 5891 struct lpfc_hba *phba = vport->phba; 5892 int j; 5893 uint32_t alpa, index; 5894 5895 if (!lpfc_is_link_up(phba)) 5896 return; 5897 5898 if (phba->fc_topology != LPFC_TOPOLOGY_LOOP) 5899 return; 5900 5901 /* Check for loop map present or not */ 5902 if (phba->alpa_map[0]) { 5903 for (j = 1; j <= phba->alpa_map[0]; j++) { 5904 alpa = phba->alpa_map[j]; 5905 if (((vport->fc_myDID & 0xff) == alpa) || (alpa == 0)) 5906 continue; 5907 lpfc_setup_disc_node(vport, alpa); 5908 } 5909 } else { 5910 /* No alpamap, so try all alpa's */ 5911 for (j = 0; j < FC_MAXLOOP; j++) { 5912 /* If cfg_scan_down is set, start from highest 5913 * ALPA (0xef) to lowest (0x1). 5914 */ 5915 if (vport->cfg_scan_down) 5916 index = j; 5917 else 5918 index = FC_MAXLOOP - j - 1; 5919 alpa = lpfcAlpaArray[index]; 5920 if ((vport->fc_myDID & 0xff) == alpa) 5921 continue; 5922 lpfc_setup_disc_node(vport, alpa); 5923 } 5924 } 5925 return; 5926 } 5927 5928 /* SLI3 only */ 5929 void 5930 lpfc_issue_clear_la(struct lpfc_hba *phba, struct lpfc_vport *vport) 5931 { 5932 LPFC_MBOXQ_t *mbox; 5933 struct lpfc_sli *psli = &phba->sli; 5934 struct lpfc_sli_ring *extra_ring = &psli->sli3_ring[LPFC_EXTRA_RING]; 5935 struct lpfc_sli_ring *fcp_ring = &psli->sli3_ring[LPFC_FCP_RING]; 5936 int rc; 5937 5938 /* 5939 * if it's not a physical port or if we already send 5940 * clear_la then don't send it. 5941 */ 5942 if ((phba->link_state >= LPFC_CLEAR_LA) || 5943 (vport->port_type != LPFC_PHYSICAL_PORT) || 5944 (phba->sli_rev == LPFC_SLI_REV4)) 5945 return; 5946 5947 /* Link up discovery */ 5948 if ((mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL)) != NULL) { 5949 phba->link_state = LPFC_CLEAR_LA; 5950 lpfc_clear_la(phba, mbox); 5951 mbox->mbox_cmpl = lpfc_mbx_cmpl_clear_la; 5952 mbox->vport = vport; 5953 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT); 5954 if (rc == MBX_NOT_FINISHED) { 5955 mempool_free(mbox, phba->mbox_mem_pool); 5956 lpfc_disc_flush_list(vport); 5957 extra_ring->flag &= ~LPFC_STOP_IOCB_EVENT; 5958 fcp_ring->flag &= ~LPFC_STOP_IOCB_EVENT; 5959 phba->link_state = LPFC_HBA_ERROR; 5960 } 5961 } 5962 } 5963 5964 /* Reg_vpi to tell firmware to resume normal operations */ 5965 void 5966 lpfc_issue_reg_vpi(struct lpfc_hba *phba, struct lpfc_vport *vport) 5967 { 5968 LPFC_MBOXQ_t *regvpimbox; 5969 5970 regvpimbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 5971 if (regvpimbox) { 5972 lpfc_reg_vpi(vport, regvpimbox); 5973 regvpimbox->mbox_cmpl = lpfc_mbx_cmpl_reg_vpi; 5974 regvpimbox->vport = vport; 5975 if (lpfc_sli_issue_mbox(phba, regvpimbox, MBX_NOWAIT) 5976 == MBX_NOT_FINISHED) { 5977 mempool_free(regvpimbox, phba->mbox_mem_pool); 5978 } 5979 } 5980 } 5981 5982 /* Start Link up / RSCN discovery on NPR nodes */ 5983 void 5984 lpfc_disc_start(struct lpfc_vport *vport) 5985 { 5986 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 5987 struct lpfc_hba *phba = vport->phba; 5988 uint32_t num_sent; 5989 uint32_t clear_la_pending; 5990 5991 if (!lpfc_is_link_up(phba)) { 5992 lpfc_printf_vlog(vport, KERN_INFO, LOG_SLI, 5993 "3315 Link is not up %x\n", 5994 phba->link_state); 5995 return; 5996 } 5997 5998 if (phba->link_state == LPFC_CLEAR_LA) 5999 clear_la_pending = 1; 6000 else 6001 clear_la_pending = 0; 6002 6003 if (vport->port_state < LPFC_VPORT_READY) 6004 vport->port_state = LPFC_DISC_AUTH; 6005 6006 lpfc_set_disctmo(vport); 6007 6008 vport->fc_prevDID = vport->fc_myDID; 6009 vport->num_disc_nodes = 0; 6010 6011 /* Start Discovery state <hba_state> */ 6012 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, 6013 "0202 Start Discovery port state x%x " 6014 "flg x%x Data: x%x x%x x%x\n", 6015 vport->port_state, vport->fc_flag, vport->fc_plogi_cnt, 6016 vport->fc_adisc_cnt, vport->fc_npr_cnt); 6017 6018 /* First do ADISCs - if any */ 6019 num_sent = lpfc_els_disc_adisc(vport); 6020 6021 if (num_sent) 6022 return; 6023 6024 /* Register the VPI for SLI3, NPIV only. */ 6025 if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) && 6026 !(vport->fc_flag & FC_PT2PT) && 6027 !(vport->fc_flag & FC_RSCN_MODE) && 6028 (phba->sli_rev < LPFC_SLI_REV4)) { 6029 lpfc_issue_clear_la(phba, vport); 6030 lpfc_issue_reg_vpi(phba, vport); 6031 return; 6032 } 6033 6034 /* 6035 * For SLI2, we need to set port_state to READY and continue 6036 * discovery. 6037 */ 6038 if (vport->port_state < LPFC_VPORT_READY && !clear_la_pending) { 6039 /* If we get here, there is nothing to ADISC */ 6040 lpfc_issue_clear_la(phba, vport); 6041 6042 if (!(vport->fc_flag & FC_ABORT_DISCOVERY)) { 6043 vport->num_disc_nodes = 0; 6044 /* go thru NPR nodes and issue ELS PLOGIs */ 6045 if (vport->fc_npr_cnt) 6046 lpfc_els_disc_plogi(vport); 6047 6048 if (!vport->num_disc_nodes) { 6049 spin_lock_irq(shost->host_lock); 6050 vport->fc_flag &= ~FC_NDISC_ACTIVE; 6051 spin_unlock_irq(shost->host_lock); 6052 lpfc_can_disctmo(vport); 6053 } 6054 } 6055 vport->port_state = LPFC_VPORT_READY; 6056 } else { 6057 /* Next do PLOGIs - if any */ 6058 num_sent = lpfc_els_disc_plogi(vport); 6059 6060 if (num_sent) 6061 return; 6062 6063 if (vport->fc_flag & FC_RSCN_MODE) { 6064 /* Check to see if more RSCNs came in while we 6065 * were processing this one. 6066 */ 6067 if ((vport->fc_rscn_id_cnt == 0) && 6068 (!(vport->fc_flag & FC_RSCN_DISCOVERY))) { 6069 spin_lock_irq(shost->host_lock); 6070 vport->fc_flag &= ~FC_RSCN_MODE; 6071 spin_unlock_irq(shost->host_lock); 6072 lpfc_can_disctmo(vport); 6073 } else 6074 lpfc_els_handle_rscn(vport); 6075 } 6076 } 6077 return; 6078 } 6079 6080 /* 6081 * Ignore completion for all IOCBs on tx and txcmpl queue for ELS 6082 * ring the match the sppecified nodelist. 6083 */ 6084 static void 6085 lpfc_free_tx(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp) 6086 { 6087 LIST_HEAD(completions); 6088 struct lpfc_iocbq *iocb, *next_iocb; 6089 struct lpfc_sli_ring *pring; 6090 u32 ulp_command; 6091 6092 pring = lpfc_phba_elsring(phba); 6093 if (unlikely(!pring)) 6094 return; 6095 6096 /* Error matching iocb on txq or txcmplq 6097 * First check the txq. 6098 */ 6099 spin_lock_irq(&phba->hbalock); 6100 list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) { 6101 if (iocb->context1 != ndlp) 6102 continue; 6103 6104 ulp_command = get_job_cmnd(phba, iocb); 6105 6106 if (ulp_command == CMD_ELS_REQUEST64_CR || 6107 ulp_command == CMD_XMIT_ELS_RSP64_CX) { 6108 6109 list_move_tail(&iocb->list, &completions); 6110 } 6111 } 6112 6113 /* Next check the txcmplq */ 6114 list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq, list) { 6115 if (iocb->context1 != ndlp) 6116 continue; 6117 6118 ulp_command = get_job_cmnd(phba, iocb); 6119 6120 if (ulp_command == CMD_ELS_REQUEST64_CR || 6121 ulp_command == CMD_XMIT_ELS_RSP64_CX) { 6122 lpfc_sli_issue_abort_iotag(phba, pring, iocb, NULL); 6123 } 6124 } 6125 spin_unlock_irq(&phba->hbalock); 6126 6127 /* Make sure HBA is alive */ 6128 lpfc_issue_hb_tmo(phba); 6129 6130 /* Cancel all the IOCBs from the completions list */ 6131 lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT, 6132 IOERR_SLI_ABORTED); 6133 } 6134 6135 static void 6136 lpfc_disc_flush_list(struct lpfc_vport *vport) 6137 { 6138 struct lpfc_nodelist *ndlp, *next_ndlp; 6139 struct lpfc_hba *phba = vport->phba; 6140 6141 if (vport->fc_plogi_cnt || vport->fc_adisc_cnt) { 6142 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, 6143 nlp_listp) { 6144 if (ndlp->nlp_state == NLP_STE_PLOGI_ISSUE || 6145 ndlp->nlp_state == NLP_STE_ADISC_ISSUE) { 6146 lpfc_free_tx(phba, ndlp); 6147 } 6148 } 6149 } 6150 } 6151 6152 /* 6153 * lpfc_notify_xport_npr - notifies xport of node disappearance 6154 * @vport: Pointer to Virtual Port object. 6155 * 6156 * Transitions all ndlps to NPR state. When lpfc_nlp_set_state 6157 * calls lpfc_nlp_state_cleanup, the ndlp->rport is unregistered 6158 * and transport notified that the node is gone. 6159 * Return Code: 6160 * none 6161 */ 6162 static void 6163 lpfc_notify_xport_npr(struct lpfc_vport *vport) 6164 { 6165 struct lpfc_nodelist *ndlp, *next_ndlp; 6166 6167 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, 6168 nlp_listp) { 6169 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE); 6170 } 6171 } 6172 void 6173 lpfc_cleanup_discovery_resources(struct lpfc_vport *vport) 6174 { 6175 lpfc_els_flush_rscn(vport); 6176 lpfc_els_flush_cmd(vport); 6177 lpfc_disc_flush_list(vport); 6178 if (pci_channel_offline(vport->phba->pcidev)) 6179 lpfc_notify_xport_npr(vport); 6180 } 6181 6182 /*****************************************************************************/ 6183 /* 6184 * NAME: lpfc_disc_timeout 6185 * 6186 * FUNCTION: Fibre Channel driver discovery timeout routine. 6187 * 6188 * EXECUTION ENVIRONMENT: interrupt only 6189 * 6190 * CALLED FROM: 6191 * Timer function 6192 * 6193 * RETURNS: 6194 * none 6195 */ 6196 /*****************************************************************************/ 6197 void 6198 lpfc_disc_timeout(struct timer_list *t) 6199 { 6200 struct lpfc_vport *vport = from_timer(vport, t, fc_disctmo); 6201 struct lpfc_hba *phba = vport->phba; 6202 uint32_t tmo_posted; 6203 unsigned long flags = 0; 6204 6205 if (unlikely(!phba)) 6206 return; 6207 6208 spin_lock_irqsave(&vport->work_port_lock, flags); 6209 tmo_posted = vport->work_port_events & WORKER_DISC_TMO; 6210 if (!tmo_posted) 6211 vport->work_port_events |= WORKER_DISC_TMO; 6212 spin_unlock_irqrestore(&vport->work_port_lock, flags); 6213 6214 if (!tmo_posted) 6215 lpfc_worker_wake_up(phba); 6216 return; 6217 } 6218 6219 static void 6220 lpfc_disc_timeout_handler(struct lpfc_vport *vport) 6221 { 6222 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 6223 struct lpfc_hba *phba = vport->phba; 6224 struct lpfc_sli *psli = &phba->sli; 6225 struct lpfc_nodelist *ndlp, *next_ndlp; 6226 LPFC_MBOXQ_t *initlinkmbox; 6227 int rc, clrlaerr = 0; 6228 6229 if (!(vport->fc_flag & FC_DISC_TMO)) 6230 return; 6231 6232 spin_lock_irq(shost->host_lock); 6233 vport->fc_flag &= ~FC_DISC_TMO; 6234 spin_unlock_irq(shost->host_lock); 6235 6236 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, 6237 "disc timeout: state:x%x rtry:x%x flg:x%x", 6238 vport->port_state, vport->fc_ns_retry, vport->fc_flag); 6239 6240 switch (vport->port_state) { 6241 6242 case LPFC_LOCAL_CFG_LINK: 6243 /* 6244 * port_state is identically LPFC_LOCAL_CFG_LINK while 6245 * waiting for FAN timeout 6246 */ 6247 lpfc_printf_vlog(vport, KERN_WARNING, LOG_DISCOVERY, 6248 "0221 FAN timeout\n"); 6249 6250 /* Start discovery by sending FLOGI, clean up old rpis */ 6251 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, 6252 nlp_listp) { 6253 if (ndlp->nlp_state != NLP_STE_NPR_NODE) 6254 continue; 6255 if (ndlp->nlp_type & NLP_FABRIC) { 6256 /* Clean up the ndlp on Fabric connections */ 6257 lpfc_drop_node(vport, ndlp); 6258 6259 } else if (!(ndlp->nlp_flag & NLP_NPR_ADISC)) { 6260 /* Fail outstanding IO now since device 6261 * is marked for PLOGI. 6262 */ 6263 lpfc_unreg_rpi(vport, ndlp); 6264 } 6265 } 6266 if (vport->port_state != LPFC_FLOGI) { 6267 if (phba->sli_rev <= LPFC_SLI_REV3) 6268 lpfc_initial_flogi(vport); 6269 else 6270 lpfc_issue_init_vfi(vport); 6271 return; 6272 } 6273 break; 6274 6275 case LPFC_FDISC: 6276 case LPFC_FLOGI: 6277 /* port_state is identically LPFC_FLOGI while waiting for FLOGI cmpl */ 6278 /* Initial FLOGI timeout */ 6279 lpfc_printf_vlog(vport, KERN_ERR, 6280 LOG_TRACE_EVENT, 6281 "0222 Initial %s timeout\n", 6282 vport->vpi ? "FDISC" : "FLOGI"); 6283 6284 /* Assume no Fabric and go on with discovery. 6285 * Check for outstanding ELS FLOGI to abort. 6286 */ 6287 6288 /* FLOGI failed, so just use loop map to make discovery list */ 6289 lpfc_disc_list_loopmap(vport); 6290 6291 /* Start discovery */ 6292 lpfc_disc_start(vport); 6293 break; 6294 6295 case LPFC_FABRIC_CFG_LINK: 6296 /* hba_state is identically LPFC_FABRIC_CFG_LINK while waiting for 6297 NameServer login */ 6298 lpfc_printf_vlog(vport, KERN_ERR, 6299 LOG_TRACE_EVENT, 6300 "0223 Timeout while waiting for " 6301 "NameServer login\n"); 6302 /* Next look for NameServer ndlp */ 6303 ndlp = lpfc_findnode_did(vport, NameServer_DID); 6304 if (ndlp) 6305 lpfc_els_abort(phba, ndlp); 6306 6307 /* ReStart discovery */ 6308 goto restart_disc; 6309 6310 case LPFC_NS_QRY: 6311 /* Check for wait for NameServer Rsp timeout */ 6312 lpfc_printf_vlog(vport, KERN_ERR, 6313 LOG_TRACE_EVENT, 6314 "0224 NameServer Query timeout " 6315 "Data: x%x x%x\n", 6316 vport->fc_ns_retry, LPFC_MAX_NS_RETRY); 6317 6318 if (vport->fc_ns_retry < LPFC_MAX_NS_RETRY) { 6319 /* Try it one more time */ 6320 vport->fc_ns_retry++; 6321 vport->gidft_inp = 0; 6322 rc = lpfc_issue_gidft(vport); 6323 if (rc == 0) 6324 break; 6325 } 6326 vport->fc_ns_retry = 0; 6327 6328 restart_disc: 6329 /* 6330 * Discovery is over. 6331 * set port_state to PORT_READY if SLI2. 6332 * cmpl_reg_vpi will set port_state to READY for SLI3. 6333 */ 6334 if (phba->sli_rev < LPFC_SLI_REV4) { 6335 if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) 6336 lpfc_issue_reg_vpi(phba, vport); 6337 else { 6338 lpfc_issue_clear_la(phba, vport); 6339 vport->port_state = LPFC_VPORT_READY; 6340 } 6341 } 6342 6343 /* Setup and issue mailbox INITIALIZE LINK command */ 6344 initlinkmbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 6345 if (!initlinkmbox) { 6346 lpfc_printf_vlog(vport, KERN_ERR, 6347 LOG_TRACE_EVENT, 6348 "0206 Device Discovery " 6349 "completion error\n"); 6350 phba->link_state = LPFC_HBA_ERROR; 6351 break; 6352 } 6353 6354 lpfc_linkdown(phba); 6355 lpfc_init_link(phba, initlinkmbox, phba->cfg_topology, 6356 phba->cfg_link_speed); 6357 initlinkmbox->u.mb.un.varInitLnk.lipsr_AL_PA = 0; 6358 initlinkmbox->vport = vport; 6359 initlinkmbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl; 6360 rc = lpfc_sli_issue_mbox(phba, initlinkmbox, MBX_NOWAIT); 6361 lpfc_set_loopback_flag(phba); 6362 if (rc == MBX_NOT_FINISHED) 6363 mempool_free(initlinkmbox, phba->mbox_mem_pool); 6364 6365 break; 6366 6367 case LPFC_DISC_AUTH: 6368 /* Node Authentication timeout */ 6369 lpfc_printf_vlog(vport, KERN_ERR, 6370 LOG_TRACE_EVENT, 6371 "0227 Node Authentication timeout\n"); 6372 lpfc_disc_flush_list(vport); 6373 6374 /* 6375 * set port_state to PORT_READY if SLI2. 6376 * cmpl_reg_vpi will set port_state to READY for SLI3. 6377 */ 6378 if (phba->sli_rev < LPFC_SLI_REV4) { 6379 if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) 6380 lpfc_issue_reg_vpi(phba, vport); 6381 else { /* NPIV Not enabled */ 6382 lpfc_issue_clear_la(phba, vport); 6383 vport->port_state = LPFC_VPORT_READY; 6384 } 6385 } 6386 break; 6387 6388 case LPFC_VPORT_READY: 6389 if (vport->fc_flag & FC_RSCN_MODE) { 6390 lpfc_printf_vlog(vport, KERN_ERR, 6391 LOG_TRACE_EVENT, 6392 "0231 RSCN timeout Data: x%x " 6393 "x%x\n", 6394 vport->fc_ns_retry, LPFC_MAX_NS_RETRY); 6395 6396 /* Cleanup any outstanding ELS commands */ 6397 lpfc_els_flush_cmd(vport); 6398 6399 lpfc_els_flush_rscn(vport); 6400 lpfc_disc_flush_list(vport); 6401 } 6402 break; 6403 6404 default: 6405 lpfc_printf_vlog(vport, KERN_ERR, 6406 LOG_TRACE_EVENT, 6407 "0273 Unexpected discovery timeout, " 6408 "vport State x%x\n", vport->port_state); 6409 break; 6410 } 6411 6412 switch (phba->link_state) { 6413 case LPFC_CLEAR_LA: 6414 /* CLEAR LA timeout */ 6415 lpfc_printf_vlog(vport, KERN_ERR, 6416 LOG_TRACE_EVENT, 6417 "0228 CLEAR LA timeout\n"); 6418 clrlaerr = 1; 6419 break; 6420 6421 case LPFC_LINK_UP: 6422 lpfc_issue_clear_la(phba, vport); 6423 fallthrough; 6424 case LPFC_LINK_UNKNOWN: 6425 case LPFC_WARM_START: 6426 case LPFC_INIT_START: 6427 case LPFC_INIT_MBX_CMDS: 6428 case LPFC_LINK_DOWN: 6429 case LPFC_HBA_ERROR: 6430 lpfc_printf_vlog(vport, KERN_ERR, 6431 LOG_TRACE_EVENT, 6432 "0230 Unexpected timeout, hba link " 6433 "state x%x\n", phba->link_state); 6434 clrlaerr = 1; 6435 break; 6436 6437 case LPFC_HBA_READY: 6438 break; 6439 } 6440 6441 if (clrlaerr) { 6442 lpfc_disc_flush_list(vport); 6443 if (phba->sli_rev != LPFC_SLI_REV4) { 6444 psli->sli3_ring[(LPFC_EXTRA_RING)].flag &= 6445 ~LPFC_STOP_IOCB_EVENT; 6446 psli->sli3_ring[LPFC_FCP_RING].flag &= 6447 ~LPFC_STOP_IOCB_EVENT; 6448 } 6449 vport->port_state = LPFC_VPORT_READY; 6450 } 6451 return; 6452 } 6453 6454 /* 6455 * This routine handles processing a NameServer REG_LOGIN mailbox 6456 * command upon completion. It is setup in the LPFC_MBOXQ 6457 * as the completion routine when the command is 6458 * handed off to the SLI layer. 6459 */ 6460 void 6461 lpfc_mbx_cmpl_fdmi_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 6462 { 6463 MAILBOX_t *mb = &pmb->u.mb; 6464 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *)(pmb->ctx_buf); 6465 struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *)pmb->ctx_ndlp; 6466 struct lpfc_vport *vport = pmb->vport; 6467 6468 pmb->ctx_buf = NULL; 6469 pmb->ctx_ndlp = NULL; 6470 6471 if (phba->sli_rev < LPFC_SLI_REV4) 6472 ndlp->nlp_rpi = mb->un.varWords[0]; 6473 ndlp->nlp_flag |= NLP_RPI_REGISTERED; 6474 ndlp->nlp_type |= NLP_FABRIC; 6475 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE); 6476 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE | LOG_DISCOVERY, 6477 "0004 rpi:%x DID:%x flg:%x %d x%px\n", 6478 ndlp->nlp_rpi, ndlp->nlp_DID, ndlp->nlp_flag, 6479 kref_read(&ndlp->kref), 6480 ndlp); 6481 /* 6482 * Start issuing Fabric-Device Management Interface (FDMI) command to 6483 * 0xfffffa (FDMI well known port). 6484 * DHBA -> DPRT -> RHBA -> RPA (physical port) 6485 * DPRT -> RPRT (vports) 6486 */ 6487 if (vport->port_type == LPFC_PHYSICAL_PORT) { 6488 phba->link_flag &= ~LS_CT_VEN_RPA; /* For extra Vendor RPA */ 6489 lpfc_fdmi_cmd(vport, ndlp, SLI_MGMT_DHBA, 0); 6490 } else { 6491 lpfc_fdmi_cmd(vport, ndlp, SLI_MGMT_DPRT, 0); 6492 } 6493 6494 6495 /* decrement the node reference count held for this callback 6496 * function. 6497 */ 6498 lpfc_nlp_put(ndlp); 6499 lpfc_mbuf_free(phba, mp->virt, mp->phys); 6500 kfree(mp); 6501 mempool_free(pmb, phba->mbox_mem_pool); 6502 6503 return; 6504 } 6505 6506 static int 6507 lpfc_filter_by_rpi(struct lpfc_nodelist *ndlp, void *param) 6508 { 6509 uint16_t *rpi = param; 6510 6511 return ndlp->nlp_rpi == *rpi; 6512 } 6513 6514 static int 6515 lpfc_filter_by_wwpn(struct lpfc_nodelist *ndlp, void *param) 6516 { 6517 return memcmp(&ndlp->nlp_portname, param, 6518 sizeof(ndlp->nlp_portname)) == 0; 6519 } 6520 6521 static struct lpfc_nodelist * 6522 __lpfc_find_node(struct lpfc_vport *vport, node_filter filter, void *param) 6523 { 6524 struct lpfc_nodelist *ndlp; 6525 6526 list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) { 6527 if (filter(ndlp, param)) { 6528 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE, 6529 "3185 FIND node filter %ps DID " 6530 "ndlp x%px did x%x flg x%x st x%x " 6531 "xri x%x type x%x rpi x%x\n", 6532 filter, ndlp, ndlp->nlp_DID, 6533 ndlp->nlp_flag, ndlp->nlp_state, 6534 ndlp->nlp_xri, ndlp->nlp_type, 6535 ndlp->nlp_rpi); 6536 return ndlp; 6537 } 6538 } 6539 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE, 6540 "3186 FIND node filter %ps NOT FOUND.\n", filter); 6541 return NULL; 6542 } 6543 6544 /* 6545 * This routine looks up the ndlp lists for the given RPI. If rpi found it 6546 * returns the node list element pointer else return NULL. 6547 */ 6548 struct lpfc_nodelist * 6549 __lpfc_findnode_rpi(struct lpfc_vport *vport, uint16_t rpi) 6550 { 6551 return __lpfc_find_node(vport, lpfc_filter_by_rpi, &rpi); 6552 } 6553 6554 /* 6555 * This routine looks up the ndlp lists for the given WWPN. If WWPN found it 6556 * returns the node element list pointer else return NULL. 6557 */ 6558 struct lpfc_nodelist * 6559 lpfc_findnode_wwpn(struct lpfc_vport *vport, struct lpfc_name *wwpn) 6560 { 6561 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 6562 struct lpfc_nodelist *ndlp; 6563 6564 spin_lock_irq(shost->host_lock); 6565 ndlp = __lpfc_find_node(vport, lpfc_filter_by_wwpn, wwpn); 6566 spin_unlock_irq(shost->host_lock); 6567 return ndlp; 6568 } 6569 6570 /* 6571 * This routine looks up the ndlp lists for the given RPI. If the rpi 6572 * is found, the routine returns the node element list pointer else 6573 * return NULL. 6574 */ 6575 struct lpfc_nodelist * 6576 lpfc_findnode_rpi(struct lpfc_vport *vport, uint16_t rpi) 6577 { 6578 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 6579 struct lpfc_nodelist *ndlp; 6580 unsigned long flags; 6581 6582 spin_lock_irqsave(shost->host_lock, flags); 6583 ndlp = __lpfc_findnode_rpi(vport, rpi); 6584 spin_unlock_irqrestore(shost->host_lock, flags); 6585 return ndlp; 6586 } 6587 6588 /** 6589 * lpfc_find_vport_by_vpid - Find a vport on a HBA through vport identifier 6590 * @phba: pointer to lpfc hba data structure. 6591 * @vpi: the physical host virtual N_Port identifier. 6592 * 6593 * This routine finds a vport on a HBA (referred by @phba) through a 6594 * @vpi. The function walks the HBA's vport list and returns the address 6595 * of the vport with the matching @vpi. 6596 * 6597 * Return code 6598 * NULL - No vport with the matching @vpi found 6599 * Otherwise - Address to the vport with the matching @vpi. 6600 **/ 6601 struct lpfc_vport * 6602 lpfc_find_vport_by_vpid(struct lpfc_hba *phba, uint16_t vpi) 6603 { 6604 struct lpfc_vport *vport; 6605 unsigned long flags; 6606 int i = 0; 6607 6608 /* The physical ports are always vpi 0 - translate is unnecessary. */ 6609 if (vpi > 0) { 6610 /* 6611 * Translate the physical vpi to the logical vpi. The 6612 * vport stores the logical vpi. 6613 */ 6614 for (i = 0; i <= phba->max_vpi; i++) { 6615 if (vpi == phba->vpi_ids[i]) 6616 break; 6617 } 6618 6619 if (i > phba->max_vpi) { 6620 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 6621 "2936 Could not find Vport mapped " 6622 "to vpi %d\n", vpi); 6623 return NULL; 6624 } 6625 } 6626 6627 spin_lock_irqsave(&phba->port_list_lock, flags); 6628 list_for_each_entry(vport, &phba->port_list, listentry) { 6629 if (vport->vpi == i) { 6630 spin_unlock_irqrestore(&phba->port_list_lock, flags); 6631 return vport; 6632 } 6633 } 6634 spin_unlock_irqrestore(&phba->port_list_lock, flags); 6635 return NULL; 6636 } 6637 6638 struct lpfc_nodelist * 6639 lpfc_nlp_init(struct lpfc_vport *vport, uint32_t did) 6640 { 6641 struct lpfc_nodelist *ndlp; 6642 int rpi = LPFC_RPI_ALLOC_ERROR; 6643 6644 if (vport->phba->sli_rev == LPFC_SLI_REV4) { 6645 rpi = lpfc_sli4_alloc_rpi(vport->phba); 6646 if (rpi == LPFC_RPI_ALLOC_ERROR) 6647 return NULL; 6648 } 6649 6650 ndlp = mempool_alloc(vport->phba->nlp_mem_pool, GFP_KERNEL); 6651 if (!ndlp) { 6652 if (vport->phba->sli_rev == LPFC_SLI_REV4) 6653 lpfc_sli4_free_rpi(vport->phba, rpi); 6654 return NULL; 6655 } 6656 6657 memset(ndlp, 0, sizeof (struct lpfc_nodelist)); 6658 6659 spin_lock_init(&ndlp->lock); 6660 6661 lpfc_initialize_node(vport, ndlp, did); 6662 INIT_LIST_HEAD(&ndlp->nlp_listp); 6663 if (vport->phba->sli_rev == LPFC_SLI_REV4) { 6664 ndlp->nlp_rpi = rpi; 6665 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE | LOG_DISCOVERY, 6666 "0007 Init New ndlp x%px, rpi:x%x DID:%x " 6667 "flg:x%x refcnt:%d\n", 6668 ndlp, ndlp->nlp_rpi, ndlp->nlp_DID, 6669 ndlp->nlp_flag, kref_read(&ndlp->kref)); 6670 6671 ndlp->active_rrqs_xri_bitmap = 6672 mempool_alloc(vport->phba->active_rrq_pool, 6673 GFP_KERNEL); 6674 if (ndlp->active_rrqs_xri_bitmap) 6675 memset(ndlp->active_rrqs_xri_bitmap, 0, 6676 ndlp->phba->cfg_rrq_xri_bitmap_sz); 6677 } 6678 6679 6680 6681 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE, 6682 "node init: did:x%x", 6683 ndlp->nlp_DID, 0, 0); 6684 6685 return ndlp; 6686 } 6687 6688 /* This routine releases all resources associated with a specifc NPort's ndlp 6689 * and mempool_free's the nodelist. 6690 */ 6691 static void 6692 lpfc_nlp_release(struct kref *kref) 6693 { 6694 struct lpfc_nodelist *ndlp = container_of(kref, struct lpfc_nodelist, 6695 kref); 6696 struct lpfc_vport *vport = ndlp->vport; 6697 6698 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE, 6699 "node release: did:x%x flg:x%x type:x%x", 6700 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type); 6701 6702 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE, 6703 "0279 %s: ndlp: x%px did %x refcnt:%d rpi:%x\n", 6704 __func__, ndlp, ndlp->nlp_DID, 6705 kref_read(&ndlp->kref), ndlp->nlp_rpi); 6706 6707 /* remove ndlp from action. */ 6708 lpfc_cancel_retry_delay_tmo(vport, ndlp); 6709 lpfc_cleanup_node(vport, ndlp); 6710 6711 /* Not all ELS transactions have registered the RPI with the port. 6712 * In these cases the rpi usage is temporary and the node is 6713 * released when the WQE is completed. Catch this case to free the 6714 * RPI to the pool. Because this node is in the release path, a lock 6715 * is unnecessary. All references are gone and the node has been 6716 * dequeued. 6717 */ 6718 if (ndlp->nlp_flag & NLP_RELEASE_RPI) { 6719 if (ndlp->nlp_rpi != LPFC_RPI_ALLOC_ERROR && 6720 !(ndlp->nlp_flag & (NLP_RPI_REGISTERED | NLP_UNREG_INP))) { 6721 lpfc_sli4_free_rpi(vport->phba, ndlp->nlp_rpi); 6722 ndlp->nlp_rpi = LPFC_RPI_ALLOC_ERROR; 6723 } 6724 } 6725 6726 /* The node is not freed back to memory, it is released to a pool so 6727 * the node fields need to be cleaned up. 6728 */ 6729 ndlp->vport = NULL; 6730 ndlp->nlp_state = NLP_STE_FREED_NODE; 6731 ndlp->nlp_flag = 0; 6732 ndlp->fc4_xpt_flags = 0; 6733 6734 /* free ndlp memory for final ndlp release */ 6735 kfree(ndlp->lat_data); 6736 if (ndlp->phba->sli_rev == LPFC_SLI_REV4) 6737 mempool_free(ndlp->active_rrqs_xri_bitmap, 6738 ndlp->phba->active_rrq_pool); 6739 mempool_free(ndlp, ndlp->phba->nlp_mem_pool); 6740 } 6741 6742 /* This routine bumps the reference count for a ndlp structure to ensure 6743 * that one discovery thread won't free a ndlp while another discovery thread 6744 * is using it. 6745 */ 6746 struct lpfc_nodelist * 6747 lpfc_nlp_get(struct lpfc_nodelist *ndlp) 6748 { 6749 unsigned long flags; 6750 6751 if (ndlp) { 6752 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE, 6753 "node get: did:x%x flg:x%x refcnt:x%x", 6754 ndlp->nlp_DID, ndlp->nlp_flag, 6755 kref_read(&ndlp->kref)); 6756 6757 /* The check of ndlp usage to prevent incrementing the 6758 * ndlp reference count that is in the process of being 6759 * released. 6760 */ 6761 spin_lock_irqsave(&ndlp->lock, flags); 6762 if (!kref_get_unless_zero(&ndlp->kref)) { 6763 spin_unlock_irqrestore(&ndlp->lock, flags); 6764 lpfc_printf_vlog(ndlp->vport, KERN_WARNING, LOG_NODE, 6765 "0276 %s: ndlp:x%px refcnt:%d\n", 6766 __func__, (void *)ndlp, kref_read(&ndlp->kref)); 6767 return NULL; 6768 } 6769 spin_unlock_irqrestore(&ndlp->lock, flags); 6770 } else { 6771 WARN_ONCE(!ndlp, "**** %s, get ref on NULL ndlp!", __func__); 6772 } 6773 6774 return ndlp; 6775 } 6776 6777 /* This routine decrements the reference count for a ndlp structure. If the 6778 * count goes to 0, this indicates the associated nodelist should be freed. 6779 */ 6780 int 6781 lpfc_nlp_put(struct lpfc_nodelist *ndlp) 6782 { 6783 if (ndlp) { 6784 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE, 6785 "node put: did:x%x flg:x%x refcnt:x%x", 6786 ndlp->nlp_DID, ndlp->nlp_flag, 6787 kref_read(&ndlp->kref)); 6788 } else { 6789 WARN_ONCE(!ndlp, "**** %s, put ref on NULL ndlp!", __func__); 6790 } 6791 6792 return ndlp ? kref_put(&ndlp->kref, lpfc_nlp_release) : 0; 6793 } 6794 6795 /* This routine free's the specified nodelist if it is not in use 6796 * by any other discovery thread. This routine returns 1 if the 6797 * ndlp has been freed. A return value of 0 indicates the ndlp is 6798 * not yet been released. 6799 */ 6800 int 6801 lpfc_nlp_not_used(struct lpfc_nodelist *ndlp) 6802 { 6803 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE, 6804 "node not used: did:x%x flg:x%x refcnt:x%x", 6805 ndlp->nlp_DID, ndlp->nlp_flag, 6806 kref_read(&ndlp->kref)); 6807 6808 if (kref_read(&ndlp->kref) == 1) 6809 if (lpfc_nlp_put(ndlp)) 6810 return 1; 6811 return 0; 6812 } 6813 6814 /** 6815 * lpfc_fcf_inuse - Check if FCF can be unregistered. 6816 * @phba: Pointer to hba context object. 6817 * 6818 * This function iterate through all FC nodes associated 6819 * will all vports to check if there is any node with 6820 * fc_rports associated with it. If there is an fc_rport 6821 * associated with the node, then the node is either in 6822 * discovered state or its devloss_timer is pending. 6823 */ 6824 static int 6825 lpfc_fcf_inuse(struct lpfc_hba *phba) 6826 { 6827 struct lpfc_vport **vports; 6828 int i, ret = 0; 6829 struct lpfc_nodelist *ndlp; 6830 struct Scsi_Host *shost; 6831 6832 vports = lpfc_create_vport_work_array(phba); 6833 6834 /* If driver cannot allocate memory, indicate fcf is in use */ 6835 if (!vports) 6836 return 1; 6837 6838 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) { 6839 shost = lpfc_shost_from_vport(vports[i]); 6840 spin_lock_irq(shost->host_lock); 6841 /* 6842 * IF the CVL_RCVD bit is not set then we have sent the 6843 * flogi. 6844 * If dev_loss fires while we are waiting we do not want to 6845 * unreg the fcf. 6846 */ 6847 if (!(vports[i]->fc_flag & FC_VPORT_CVL_RCVD)) { 6848 spin_unlock_irq(shost->host_lock); 6849 ret = 1; 6850 goto out; 6851 } 6852 list_for_each_entry(ndlp, &vports[i]->fc_nodes, nlp_listp) { 6853 if (ndlp->rport && 6854 (ndlp->rport->roles & FC_RPORT_ROLE_FCP_TARGET)) { 6855 ret = 1; 6856 spin_unlock_irq(shost->host_lock); 6857 goto out; 6858 } else if (ndlp->nlp_flag & NLP_RPI_REGISTERED) { 6859 ret = 1; 6860 lpfc_printf_log(phba, KERN_INFO, 6861 LOG_NODE | LOG_DISCOVERY, 6862 "2624 RPI %x DID %x flag %x " 6863 "still logged in\n", 6864 ndlp->nlp_rpi, ndlp->nlp_DID, 6865 ndlp->nlp_flag); 6866 } 6867 } 6868 spin_unlock_irq(shost->host_lock); 6869 } 6870 out: 6871 lpfc_destroy_vport_work_array(phba, vports); 6872 return ret; 6873 } 6874 6875 /** 6876 * lpfc_unregister_vfi_cmpl - Completion handler for unreg vfi. 6877 * @phba: Pointer to hba context object. 6878 * @mboxq: Pointer to mailbox object. 6879 * 6880 * This function frees memory associated with the mailbox command. 6881 */ 6882 void 6883 lpfc_unregister_vfi_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq) 6884 { 6885 struct lpfc_vport *vport = mboxq->vport; 6886 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 6887 6888 if (mboxq->u.mb.mbxStatus) { 6889 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 6890 "2555 UNREG_VFI mbxStatus error x%x " 6891 "HBA state x%x\n", 6892 mboxq->u.mb.mbxStatus, vport->port_state); 6893 } 6894 spin_lock_irq(shost->host_lock); 6895 phba->pport->fc_flag &= ~FC_VFI_REGISTERED; 6896 spin_unlock_irq(shost->host_lock); 6897 mempool_free(mboxq, phba->mbox_mem_pool); 6898 return; 6899 } 6900 6901 /** 6902 * lpfc_unregister_fcfi_cmpl - Completion handler for unreg fcfi. 6903 * @phba: Pointer to hba context object. 6904 * @mboxq: Pointer to mailbox object. 6905 * 6906 * This function frees memory associated with the mailbox command. 6907 */ 6908 static void 6909 lpfc_unregister_fcfi_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq) 6910 { 6911 struct lpfc_vport *vport = mboxq->vport; 6912 6913 if (mboxq->u.mb.mbxStatus) { 6914 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 6915 "2550 UNREG_FCFI mbxStatus error x%x " 6916 "HBA state x%x\n", 6917 mboxq->u.mb.mbxStatus, vport->port_state); 6918 } 6919 mempool_free(mboxq, phba->mbox_mem_pool); 6920 return; 6921 } 6922 6923 /** 6924 * lpfc_unregister_fcf_prep - Unregister fcf record preparation 6925 * @phba: Pointer to hba context object. 6926 * 6927 * This function prepare the HBA for unregistering the currently registered 6928 * FCF from the HBA. It performs unregistering, in order, RPIs, VPIs, and 6929 * VFIs. 6930 */ 6931 int 6932 lpfc_unregister_fcf_prep(struct lpfc_hba *phba) 6933 { 6934 struct lpfc_vport **vports; 6935 struct lpfc_nodelist *ndlp; 6936 struct Scsi_Host *shost; 6937 int i = 0, rc; 6938 6939 /* Unregister RPIs */ 6940 if (lpfc_fcf_inuse(phba)) 6941 lpfc_unreg_hba_rpis(phba); 6942 6943 /* At this point, all discovery is aborted */ 6944 phba->pport->port_state = LPFC_VPORT_UNKNOWN; 6945 6946 /* Unregister VPIs */ 6947 vports = lpfc_create_vport_work_array(phba); 6948 if (vports && (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)) 6949 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) { 6950 /* Stop FLOGI/FDISC retries */ 6951 ndlp = lpfc_findnode_did(vports[i], Fabric_DID); 6952 if (ndlp) 6953 lpfc_cancel_retry_delay_tmo(vports[i], ndlp); 6954 lpfc_cleanup_pending_mbox(vports[i]); 6955 if (phba->sli_rev == LPFC_SLI_REV4) 6956 lpfc_sli4_unreg_all_rpis(vports[i]); 6957 lpfc_mbx_unreg_vpi(vports[i]); 6958 shost = lpfc_shost_from_vport(vports[i]); 6959 spin_lock_irq(shost->host_lock); 6960 vports[i]->fc_flag |= FC_VPORT_NEEDS_INIT_VPI; 6961 vports[i]->vpi_state &= ~LPFC_VPI_REGISTERED; 6962 spin_unlock_irq(shost->host_lock); 6963 } 6964 lpfc_destroy_vport_work_array(phba, vports); 6965 if (i == 0 && (!(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED))) { 6966 ndlp = lpfc_findnode_did(phba->pport, Fabric_DID); 6967 if (ndlp) 6968 lpfc_cancel_retry_delay_tmo(phba->pport, ndlp); 6969 lpfc_cleanup_pending_mbox(phba->pport); 6970 if (phba->sli_rev == LPFC_SLI_REV4) 6971 lpfc_sli4_unreg_all_rpis(phba->pport); 6972 lpfc_mbx_unreg_vpi(phba->pport); 6973 shost = lpfc_shost_from_vport(phba->pport); 6974 spin_lock_irq(shost->host_lock); 6975 phba->pport->fc_flag |= FC_VPORT_NEEDS_INIT_VPI; 6976 phba->pport->vpi_state &= ~LPFC_VPI_REGISTERED; 6977 spin_unlock_irq(shost->host_lock); 6978 } 6979 6980 /* Cleanup any outstanding ELS commands */ 6981 lpfc_els_flush_all_cmd(phba); 6982 6983 /* Unregister the physical port VFI */ 6984 rc = lpfc_issue_unreg_vfi(phba->pport); 6985 return rc; 6986 } 6987 6988 /** 6989 * lpfc_sli4_unregister_fcf - Unregister currently registered FCF record 6990 * @phba: Pointer to hba context object. 6991 * 6992 * This function issues synchronous unregister FCF mailbox command to HBA to 6993 * unregister the currently registered FCF record. The driver does not reset 6994 * the driver FCF usage state flags. 6995 * 6996 * Return 0 if successfully issued, none-zero otherwise. 6997 */ 6998 int 6999 lpfc_sli4_unregister_fcf(struct lpfc_hba *phba) 7000 { 7001 LPFC_MBOXQ_t *mbox; 7002 int rc; 7003 7004 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 7005 if (!mbox) { 7006 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 7007 "2551 UNREG_FCFI mbox allocation failed" 7008 "HBA state x%x\n", phba->pport->port_state); 7009 return -ENOMEM; 7010 } 7011 lpfc_unreg_fcfi(mbox, phba->fcf.fcfi); 7012 mbox->vport = phba->pport; 7013 mbox->mbox_cmpl = lpfc_unregister_fcfi_cmpl; 7014 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT); 7015 7016 if (rc == MBX_NOT_FINISHED) { 7017 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 7018 "2552 Unregister FCFI command failed rc x%x " 7019 "HBA state x%x\n", 7020 rc, phba->pport->port_state); 7021 return -EINVAL; 7022 } 7023 return 0; 7024 } 7025 7026 /** 7027 * lpfc_unregister_fcf_rescan - Unregister currently registered fcf and rescan 7028 * @phba: Pointer to hba context object. 7029 * 7030 * This function unregisters the currently reigstered FCF. This function 7031 * also tries to find another FCF for discovery by rescan the HBA FCF table. 7032 */ 7033 void 7034 lpfc_unregister_fcf_rescan(struct lpfc_hba *phba) 7035 { 7036 int rc; 7037 7038 /* Preparation for unregistering fcf */ 7039 rc = lpfc_unregister_fcf_prep(phba); 7040 if (rc) { 7041 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 7042 "2748 Failed to prepare for unregistering " 7043 "HBA's FCF record: rc=%d\n", rc); 7044 return; 7045 } 7046 7047 /* Now, unregister FCF record and reset HBA FCF state */ 7048 rc = lpfc_sli4_unregister_fcf(phba); 7049 if (rc) 7050 return; 7051 /* Reset HBA FCF states after successful unregister FCF */ 7052 phba->fcf.fcf_flag = 0; 7053 phba->fcf.current_rec.flag = 0; 7054 7055 /* 7056 * If driver is not unloading, check if there is any other 7057 * FCF record that can be used for discovery. 7058 */ 7059 if ((phba->pport->load_flag & FC_UNLOADING) || 7060 (phba->link_state < LPFC_LINK_UP)) 7061 return; 7062 7063 /* This is considered as the initial FCF discovery scan */ 7064 spin_lock_irq(&phba->hbalock); 7065 phba->fcf.fcf_flag |= FCF_INIT_DISC; 7066 spin_unlock_irq(&phba->hbalock); 7067 7068 /* Reset FCF roundrobin bmask for new discovery */ 7069 lpfc_sli4_clear_fcf_rr_bmask(phba); 7070 7071 rc = lpfc_sli4_fcf_scan_read_fcf_rec(phba, LPFC_FCOE_FCF_GET_FIRST); 7072 7073 if (rc) { 7074 spin_lock_irq(&phba->hbalock); 7075 phba->fcf.fcf_flag &= ~FCF_INIT_DISC; 7076 spin_unlock_irq(&phba->hbalock); 7077 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 7078 "2553 lpfc_unregister_unused_fcf failed " 7079 "to read FCF record HBA state x%x\n", 7080 phba->pport->port_state); 7081 } 7082 } 7083 7084 /** 7085 * lpfc_unregister_fcf - Unregister the currently registered fcf record 7086 * @phba: Pointer to hba context object. 7087 * 7088 * This function just unregisters the currently reigstered FCF. It does not 7089 * try to find another FCF for discovery. 7090 */ 7091 void 7092 lpfc_unregister_fcf(struct lpfc_hba *phba) 7093 { 7094 int rc; 7095 7096 /* Preparation for unregistering fcf */ 7097 rc = lpfc_unregister_fcf_prep(phba); 7098 if (rc) { 7099 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 7100 "2749 Failed to prepare for unregistering " 7101 "HBA's FCF record: rc=%d\n", rc); 7102 return; 7103 } 7104 7105 /* Now, unregister FCF record and reset HBA FCF state */ 7106 rc = lpfc_sli4_unregister_fcf(phba); 7107 if (rc) 7108 return; 7109 /* Set proper HBA FCF states after successful unregister FCF */ 7110 spin_lock_irq(&phba->hbalock); 7111 phba->fcf.fcf_flag &= ~FCF_REGISTERED; 7112 spin_unlock_irq(&phba->hbalock); 7113 } 7114 7115 /** 7116 * lpfc_unregister_unused_fcf - Unregister FCF if all devices are disconnected. 7117 * @phba: Pointer to hba context object. 7118 * 7119 * This function check if there are any connected remote port for the FCF and 7120 * if all the devices are disconnected, this function unregister FCFI. 7121 * This function also tries to use another FCF for discovery. 7122 */ 7123 void 7124 lpfc_unregister_unused_fcf(struct lpfc_hba *phba) 7125 { 7126 /* 7127 * If HBA is not running in FIP mode, if HBA does not support 7128 * FCoE, if FCF discovery is ongoing, or if FCF has not been 7129 * registered, do nothing. 7130 */ 7131 spin_lock_irq(&phba->hbalock); 7132 if (!(phba->hba_flag & HBA_FCOE_MODE) || 7133 !(phba->fcf.fcf_flag & FCF_REGISTERED) || 7134 !(phba->hba_flag & HBA_FIP_SUPPORT) || 7135 (phba->fcf.fcf_flag & FCF_DISCOVERY) || 7136 (phba->pport->port_state == LPFC_FLOGI)) { 7137 spin_unlock_irq(&phba->hbalock); 7138 return; 7139 } 7140 spin_unlock_irq(&phba->hbalock); 7141 7142 if (lpfc_fcf_inuse(phba)) 7143 return; 7144 7145 lpfc_unregister_fcf_rescan(phba); 7146 } 7147 7148 /** 7149 * lpfc_read_fcf_conn_tbl - Create driver FCF connection table. 7150 * @phba: Pointer to hba context object. 7151 * @buff: Buffer containing the FCF connection table as in the config 7152 * region. 7153 * This function create driver data structure for the FCF connection 7154 * record table read from config region 23. 7155 */ 7156 static void 7157 lpfc_read_fcf_conn_tbl(struct lpfc_hba *phba, 7158 uint8_t *buff) 7159 { 7160 struct lpfc_fcf_conn_entry *conn_entry, *next_conn_entry; 7161 struct lpfc_fcf_conn_hdr *conn_hdr; 7162 struct lpfc_fcf_conn_rec *conn_rec; 7163 uint32_t record_count; 7164 int i; 7165 7166 /* Free the current connect table */ 7167 list_for_each_entry_safe(conn_entry, next_conn_entry, 7168 &phba->fcf_conn_rec_list, list) { 7169 list_del_init(&conn_entry->list); 7170 kfree(conn_entry); 7171 } 7172 7173 conn_hdr = (struct lpfc_fcf_conn_hdr *) buff; 7174 record_count = conn_hdr->length * sizeof(uint32_t)/ 7175 sizeof(struct lpfc_fcf_conn_rec); 7176 7177 conn_rec = (struct lpfc_fcf_conn_rec *) 7178 (buff + sizeof(struct lpfc_fcf_conn_hdr)); 7179 7180 for (i = 0; i < record_count; i++) { 7181 if (!(conn_rec[i].flags & FCFCNCT_VALID)) 7182 continue; 7183 conn_entry = kzalloc(sizeof(struct lpfc_fcf_conn_entry), 7184 GFP_KERNEL); 7185 if (!conn_entry) { 7186 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 7187 "2566 Failed to allocate connection" 7188 " table entry\n"); 7189 return; 7190 } 7191 7192 memcpy(&conn_entry->conn_rec, &conn_rec[i], 7193 sizeof(struct lpfc_fcf_conn_rec)); 7194 list_add_tail(&conn_entry->list, 7195 &phba->fcf_conn_rec_list); 7196 } 7197 7198 if (!list_empty(&phba->fcf_conn_rec_list)) { 7199 i = 0; 7200 list_for_each_entry(conn_entry, &phba->fcf_conn_rec_list, 7201 list) { 7202 conn_rec = &conn_entry->conn_rec; 7203 lpfc_printf_log(phba, KERN_INFO, LOG_INIT, 7204 "3345 FCF connection list rec[%02d]: " 7205 "flags:x%04x, vtag:x%04x, " 7206 "fabric_name:x%02x:%02x:%02x:%02x:" 7207 "%02x:%02x:%02x:%02x, " 7208 "switch_name:x%02x:%02x:%02x:%02x:" 7209 "%02x:%02x:%02x:%02x\n", i++, 7210 conn_rec->flags, conn_rec->vlan_tag, 7211 conn_rec->fabric_name[0], 7212 conn_rec->fabric_name[1], 7213 conn_rec->fabric_name[2], 7214 conn_rec->fabric_name[3], 7215 conn_rec->fabric_name[4], 7216 conn_rec->fabric_name[5], 7217 conn_rec->fabric_name[6], 7218 conn_rec->fabric_name[7], 7219 conn_rec->switch_name[0], 7220 conn_rec->switch_name[1], 7221 conn_rec->switch_name[2], 7222 conn_rec->switch_name[3], 7223 conn_rec->switch_name[4], 7224 conn_rec->switch_name[5], 7225 conn_rec->switch_name[6], 7226 conn_rec->switch_name[7]); 7227 } 7228 } 7229 } 7230 7231 /** 7232 * lpfc_read_fcoe_param - Read FCoe parameters from conf region.. 7233 * @phba: Pointer to hba context object. 7234 * @buff: Buffer containing the FCoE parameter data structure. 7235 * 7236 * This function update driver data structure with config 7237 * parameters read from config region 23. 7238 */ 7239 static void 7240 lpfc_read_fcoe_param(struct lpfc_hba *phba, 7241 uint8_t *buff) 7242 { 7243 struct lpfc_fip_param_hdr *fcoe_param_hdr; 7244 struct lpfc_fcoe_params *fcoe_param; 7245 7246 fcoe_param_hdr = (struct lpfc_fip_param_hdr *) 7247 buff; 7248 fcoe_param = (struct lpfc_fcoe_params *) 7249 (buff + sizeof(struct lpfc_fip_param_hdr)); 7250 7251 if ((fcoe_param_hdr->parm_version != FIPP_VERSION) || 7252 (fcoe_param_hdr->length != FCOE_PARAM_LENGTH)) 7253 return; 7254 7255 if (fcoe_param_hdr->parm_flags & FIPP_VLAN_VALID) { 7256 phba->valid_vlan = 1; 7257 phba->vlan_id = le16_to_cpu(fcoe_param->vlan_tag) & 7258 0xFFF; 7259 } 7260 7261 phba->fc_map[0] = fcoe_param->fc_map[0]; 7262 phba->fc_map[1] = fcoe_param->fc_map[1]; 7263 phba->fc_map[2] = fcoe_param->fc_map[2]; 7264 return; 7265 } 7266 7267 /** 7268 * lpfc_get_rec_conf23 - Get a record type in config region data. 7269 * @buff: Buffer containing config region 23 data. 7270 * @size: Size of the data buffer. 7271 * @rec_type: Record type to be searched. 7272 * 7273 * This function searches config region data to find the beginning 7274 * of the record specified by record_type. If record found, this 7275 * function return pointer to the record else return NULL. 7276 */ 7277 static uint8_t * 7278 lpfc_get_rec_conf23(uint8_t *buff, uint32_t size, uint8_t rec_type) 7279 { 7280 uint32_t offset = 0, rec_length; 7281 7282 if ((buff[0] == LPFC_REGION23_LAST_REC) || 7283 (size < sizeof(uint32_t))) 7284 return NULL; 7285 7286 rec_length = buff[offset + 1]; 7287 7288 /* 7289 * One TLV record has one word header and number of data words 7290 * specified in the rec_length field of the record header. 7291 */ 7292 while ((offset + rec_length * sizeof(uint32_t) + sizeof(uint32_t)) 7293 <= size) { 7294 if (buff[offset] == rec_type) 7295 return &buff[offset]; 7296 7297 if (buff[offset] == LPFC_REGION23_LAST_REC) 7298 return NULL; 7299 7300 offset += rec_length * sizeof(uint32_t) + sizeof(uint32_t); 7301 rec_length = buff[offset + 1]; 7302 } 7303 return NULL; 7304 } 7305 7306 /** 7307 * lpfc_parse_fcoe_conf - Parse FCoE config data read from config region 23. 7308 * @phba: Pointer to lpfc_hba data structure. 7309 * @buff: Buffer containing config region 23 data. 7310 * @size: Size of the data buffer. 7311 * 7312 * This function parses the FCoE config parameters in config region 23 and 7313 * populate driver data structure with the parameters. 7314 */ 7315 void 7316 lpfc_parse_fcoe_conf(struct lpfc_hba *phba, 7317 uint8_t *buff, 7318 uint32_t size) 7319 { 7320 uint32_t offset = 0; 7321 uint8_t *rec_ptr; 7322 7323 /* 7324 * If data size is less than 2 words signature and version cannot be 7325 * verified. 7326 */ 7327 if (size < 2*sizeof(uint32_t)) 7328 return; 7329 7330 /* Check the region signature first */ 7331 if (memcmp(buff, LPFC_REGION23_SIGNATURE, 4)) { 7332 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 7333 "2567 Config region 23 has bad signature\n"); 7334 return; 7335 } 7336 7337 offset += 4; 7338 7339 /* Check the data structure version */ 7340 if (buff[offset] != LPFC_REGION23_VERSION) { 7341 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 7342 "2568 Config region 23 has bad version\n"); 7343 return; 7344 } 7345 offset += 4; 7346 7347 /* Read FCoE param record */ 7348 rec_ptr = lpfc_get_rec_conf23(&buff[offset], 7349 size - offset, FCOE_PARAM_TYPE); 7350 if (rec_ptr) 7351 lpfc_read_fcoe_param(phba, rec_ptr); 7352 7353 /* Read FCF connection table */ 7354 rec_ptr = lpfc_get_rec_conf23(&buff[offset], 7355 size - offset, FCOE_CONN_TBL_TYPE); 7356 if (rec_ptr) 7357 lpfc_read_fcf_conn_tbl(phba, rec_ptr); 7358 7359 } 7360