1 /******************************************************************* 2 * This file is part of the Emulex Linux Device Driver for * 3 * Fibre Channel Host Bus Adapters. * 4 * Copyright (C) 2017-2024 Broadcom. All Rights Reserved. The term * 5 * “Broadcom” refers to Broadcom Inc. and/or its subsidiaries. * 6 * Copyright (C) 2004-2016 Emulex. All rights reserved. * 7 * EMULEX and SLI are trademarks of Emulex. * 8 * www.broadcom.com * 9 * Portions Copyright (C) 2004-2005 Christoph Hellwig * 10 * * 11 * This program is free software; you can redistribute it and/or * 12 * modify it under the terms of version 2 of the GNU General * 13 * Public License as published by the Free Software Foundation. * 14 * This program is distributed in the hope that it will be useful. * 15 * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND * 16 * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, * 17 * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE * 18 * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD * 19 * TO BE LEGALLY INVALID. See the GNU General Public License for * 20 * more details, a copy of which can be found in the file COPYING * 21 * included with this package. * 22 *******************************************************************/ 23 24 #include <linux/blkdev.h> 25 #include <linux/delay.h> 26 #include <linux/slab.h> 27 #include <linux/pci.h> 28 #include <linux/kthread.h> 29 #include <linux/interrupt.h> 30 #include <linux/lockdep.h> 31 #include <linux/utsname.h> 32 33 #include <scsi/scsi.h> 34 #include <scsi/scsi_device.h> 35 #include <scsi/scsi_host.h> 36 #include <scsi/scsi_transport_fc.h> 37 #include <scsi/fc/fc_fs.h> 38 39 #include "lpfc_hw4.h" 40 #include "lpfc_hw.h" 41 #include "lpfc_nl.h" 42 #include "lpfc_disc.h" 43 #include "lpfc_sli.h" 44 #include "lpfc_sli4.h" 45 #include "lpfc.h" 46 #include "lpfc_scsi.h" 47 #include "lpfc_nvme.h" 48 #include "lpfc_logmsg.h" 49 #include "lpfc_crtn.h" 50 #include "lpfc_vport.h" 51 #include "lpfc_debugfs.h" 52 53 /* AlpaArray for assignment of scsid for scan-down and bind_method */ 54 static uint8_t lpfcAlpaArray[] = { 55 0xEF, 0xE8, 0xE4, 0xE2, 0xE1, 0xE0, 0xDC, 0xDA, 0xD9, 0xD6, 56 0xD5, 0xD4, 0xD3, 0xD2, 0xD1, 0xCE, 0xCD, 0xCC, 0xCB, 0xCA, 57 0xC9, 0xC7, 0xC6, 0xC5, 0xC3, 0xBC, 0xBA, 0xB9, 0xB6, 0xB5, 58 0xB4, 0xB3, 0xB2, 0xB1, 0xAE, 0xAD, 0xAC, 0xAB, 0xAA, 0xA9, 59 0xA7, 0xA6, 0xA5, 0xA3, 0x9F, 0x9E, 0x9D, 0x9B, 0x98, 0x97, 60 0x90, 0x8F, 0x88, 0x84, 0x82, 0x81, 0x80, 0x7C, 0x7A, 0x79, 61 0x76, 0x75, 0x74, 0x73, 0x72, 0x71, 0x6E, 0x6D, 0x6C, 0x6B, 62 0x6A, 0x69, 0x67, 0x66, 0x65, 0x63, 0x5C, 0x5A, 0x59, 0x56, 63 0x55, 0x54, 0x53, 0x52, 0x51, 0x4E, 0x4D, 0x4C, 0x4B, 0x4A, 64 0x49, 0x47, 0x46, 0x45, 0x43, 0x3C, 0x3A, 0x39, 0x36, 0x35, 65 0x34, 0x33, 0x32, 0x31, 0x2E, 0x2D, 0x2C, 0x2B, 0x2A, 0x29, 66 0x27, 0x26, 0x25, 0x23, 0x1F, 0x1E, 0x1D, 0x1B, 0x18, 0x17, 67 0x10, 0x0F, 0x08, 0x04, 0x02, 0x01 68 }; 69 70 static void lpfc_disc_timeout_handler(struct lpfc_vport *); 71 static void lpfc_disc_flush_list(struct lpfc_vport *vport); 72 static void lpfc_unregister_fcfi_cmpl(struct lpfc_hba *, LPFC_MBOXQ_t *); 73 static int lpfc_fcf_inuse(struct lpfc_hba *); 74 static void lpfc_mbx_cmpl_read_sparam(struct lpfc_hba *, LPFC_MBOXQ_t *); 75 static void lpfc_check_inactive_vmid(struct lpfc_hba *phba); 76 static void lpfc_check_vmid_qfpa_issue(struct lpfc_hba *phba); 77 78 static int 79 lpfc_valid_xpt_node(struct lpfc_nodelist *ndlp) 80 { 81 if (ndlp->nlp_fc4_type || 82 ndlp->nlp_type & NLP_FABRIC) 83 return 1; 84 return 0; 85 } 86 /* The source of a terminate rport I/O is either a dev_loss_tmo 87 * event or a call to fc_remove_host. While the rport should be 88 * valid during these downcalls, the transport can call twice 89 * in a single event. This routine provides somoe protection 90 * as the NDLP isn't really free, just released to the pool. 91 */ 92 static int 93 lpfc_rport_invalid(struct fc_rport *rport) 94 { 95 struct lpfc_rport_data *rdata; 96 struct lpfc_nodelist *ndlp; 97 98 if (!rport) { 99 pr_err("**** %s: NULL rport, exit.\n", __func__); 100 return -EINVAL; 101 } 102 103 rdata = rport->dd_data; 104 if (!rdata) { 105 pr_err("**** %s: NULL dd_data on rport x%px SID x%x\n", 106 __func__, rport, rport->scsi_target_id); 107 return -EINVAL; 108 } 109 110 ndlp = rdata->pnode; 111 if (!rdata->pnode) { 112 pr_info("**** %s: NULL ndlp on rport x%px SID x%x\n", 113 __func__, rport, rport->scsi_target_id); 114 return -EINVAL; 115 } 116 117 if (!ndlp->vport) { 118 pr_err("**** %s: Null vport on ndlp x%px, DID x%x rport x%px " 119 "SID x%x\n", __func__, ndlp, ndlp->nlp_DID, rport, 120 rport->scsi_target_id); 121 return -EINVAL; 122 } 123 return 0; 124 } 125 126 void 127 lpfc_terminate_rport_io(struct fc_rport *rport) 128 { 129 struct lpfc_rport_data *rdata; 130 struct lpfc_nodelist *ndlp; 131 struct lpfc_vport *vport; 132 133 if (lpfc_rport_invalid(rport)) 134 return; 135 136 rdata = rport->dd_data; 137 ndlp = rdata->pnode; 138 vport = ndlp->vport; 139 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT, 140 "rport terminate: sid:x%x did:x%x flg:x%x", 141 ndlp->nlp_sid, ndlp->nlp_DID, ndlp->nlp_flag); 142 143 if (ndlp->nlp_sid != NLP_NO_SID) 144 lpfc_sli_abort_iocb(vport, ndlp->nlp_sid, 0, LPFC_CTX_TGT); 145 } 146 147 /* 148 * This function will be called when dev_loss_tmo fire. 149 */ 150 void 151 lpfc_dev_loss_tmo_callbk(struct fc_rport *rport) 152 { 153 struct lpfc_nodelist *ndlp; 154 struct lpfc_vport *vport; 155 struct lpfc_hba *phba; 156 struct lpfc_work_evt *evtp; 157 unsigned long iflags; 158 159 ndlp = ((struct lpfc_rport_data *)rport->dd_data)->pnode; 160 if (!ndlp) 161 return; 162 163 vport = ndlp->vport; 164 phba = vport->phba; 165 166 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT, 167 "rport devlosscb: sid:x%x did:x%x flg:x%x", 168 ndlp->nlp_sid, ndlp->nlp_DID, ndlp->nlp_flag); 169 170 lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_NODE, 171 "3181 dev_loss_callbk x%06x, rport x%px flg x%x " 172 "load_flag x%lx refcnt %u state %d xpt x%x\n", 173 ndlp->nlp_DID, ndlp->rport, ndlp->nlp_flag, 174 vport->load_flag, kref_read(&ndlp->kref), 175 ndlp->nlp_state, ndlp->fc4_xpt_flags); 176 177 /* Don't schedule a worker thread event if the vport is going down. */ 178 if (test_bit(FC_UNLOADING, &vport->load_flag)) { 179 spin_lock_irqsave(&ndlp->lock, iflags); 180 ndlp->rport = NULL; 181 182 /* The scsi_transport is done with the rport so lpfc cannot 183 * call to unregister. Remove the scsi transport reference 184 * and clean up the SCSI transport node details. 185 */ 186 if (ndlp->fc4_xpt_flags & (NLP_XPT_REGD | SCSI_XPT_REGD)) { 187 ndlp->fc4_xpt_flags &= ~SCSI_XPT_REGD; 188 189 /* NVME transport-registered rports need the 190 * NLP_XPT_REGD flag to complete an unregister. 191 */ 192 if (!(ndlp->fc4_xpt_flags & NVME_XPT_REGD)) 193 ndlp->fc4_xpt_flags &= ~NLP_XPT_REGD; 194 spin_unlock_irqrestore(&ndlp->lock, iflags); 195 lpfc_nlp_put(ndlp); 196 spin_lock_irqsave(&ndlp->lock, iflags); 197 } 198 199 /* Only 1 thread can drop the initial node reference. If 200 * another thread has set NLP_DROPPED, this thread is done. 201 */ 202 if (!(ndlp->fc4_xpt_flags & NVME_XPT_REGD) && 203 !(ndlp->nlp_flag & NLP_DROPPED)) { 204 ndlp->nlp_flag |= NLP_DROPPED; 205 spin_unlock_irqrestore(&ndlp->lock, iflags); 206 lpfc_nlp_put(ndlp); 207 return; 208 } 209 210 spin_unlock_irqrestore(&ndlp->lock, iflags); 211 return; 212 } 213 214 if (ndlp->nlp_state == NLP_STE_MAPPED_NODE) 215 return; 216 217 if (rport->port_name != wwn_to_u64(ndlp->nlp_portname.u.wwn)) 218 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 219 "6789 rport name %llx != node port name %llx", 220 rport->port_name, 221 wwn_to_u64(ndlp->nlp_portname.u.wwn)); 222 223 evtp = &ndlp->dev_loss_evt; 224 225 if (!list_empty(&evtp->evt_listp)) { 226 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 227 "6790 rport name %llx dev_loss_evt pending\n", 228 rport->port_name); 229 return; 230 } 231 232 spin_lock_irqsave(&ndlp->lock, iflags); 233 ndlp->nlp_flag |= NLP_IN_DEV_LOSS; 234 235 /* If there is a PLOGI in progress, and we are in a 236 * NLP_NPR_2B_DISC state, don't turn off the flag. 237 */ 238 if (ndlp->nlp_state != NLP_STE_PLOGI_ISSUE) 239 ndlp->nlp_flag &= ~NLP_NPR_2B_DISC; 240 241 /* 242 * The backend does not expect any more calls associated with this 243 * rport. Remove the association between rport and ndlp. 244 */ 245 ndlp->fc4_xpt_flags &= ~SCSI_XPT_REGD; 246 ((struct lpfc_rport_data *)rport->dd_data)->pnode = NULL; 247 ndlp->rport = NULL; 248 spin_unlock_irqrestore(&ndlp->lock, iflags); 249 250 if (phba->worker_thread) { 251 /* We need to hold the node by incrementing the reference 252 * count until this queued work is done 253 */ 254 evtp->evt_arg1 = lpfc_nlp_get(ndlp); 255 256 spin_lock_irqsave(&phba->hbalock, iflags); 257 if (evtp->evt_arg1) { 258 evtp->evt = LPFC_EVT_DEV_LOSS; 259 list_add_tail(&evtp->evt_listp, &phba->work_list); 260 spin_unlock_irqrestore(&phba->hbalock, iflags); 261 lpfc_worker_wake_up(phba); 262 return; 263 } 264 spin_unlock_irqrestore(&phba->hbalock, iflags); 265 } else { 266 lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_NODE, 267 "3188 worker thread is stopped %s x%06x, " 268 " rport x%px flg x%x load_flag x%lx refcnt " 269 "%d\n", __func__, ndlp->nlp_DID, 270 ndlp->rport, ndlp->nlp_flag, 271 vport->load_flag, kref_read(&ndlp->kref)); 272 if (!(ndlp->fc4_xpt_flags & NVME_XPT_REGD)) { 273 spin_lock_irqsave(&ndlp->lock, iflags); 274 /* Node is in dev loss. No further transaction. */ 275 ndlp->nlp_flag &= ~NLP_IN_DEV_LOSS; 276 spin_unlock_irqrestore(&ndlp->lock, iflags); 277 lpfc_disc_state_machine(vport, ndlp, NULL, 278 NLP_EVT_DEVICE_RM); 279 } 280 } 281 } 282 283 /** 284 * lpfc_check_inactive_vmid_one - VMID inactivity checker for a vport 285 * @vport: Pointer to vport context object. 286 * 287 * This function checks for idle VMID entries related to a particular vport. If 288 * found unused/idle, free them accordingly. 289 **/ 290 static void lpfc_check_inactive_vmid_one(struct lpfc_vport *vport) 291 { 292 u16 keep; 293 u32 difftime = 0, r, bucket; 294 u64 *lta; 295 int cpu; 296 struct lpfc_vmid *vmp; 297 298 write_lock(&vport->vmid_lock); 299 300 if (!vport->cur_vmid_cnt) 301 goto out; 302 303 /* iterate through the table */ 304 hash_for_each(vport->hash_table, bucket, vmp, hnode) { 305 keep = 0; 306 if (vmp->flag & LPFC_VMID_REGISTERED) { 307 /* check if the particular VMID is in use */ 308 /* for all available per cpu variable */ 309 for_each_possible_cpu(cpu) { 310 /* if last access time is less than timeout */ 311 lta = per_cpu_ptr(vmp->last_io_time, cpu); 312 if (!lta) 313 continue; 314 difftime = (jiffies) - (*lta); 315 if ((vport->vmid_inactivity_timeout * 316 JIFFIES_PER_HR) > difftime) { 317 keep = 1; 318 break; 319 } 320 } 321 322 /* if none of the cpus have been used by the vm, */ 323 /* remove the entry if already registered */ 324 if (!keep) { 325 /* mark the entry for deregistration */ 326 vmp->flag = LPFC_VMID_DE_REGISTER; 327 write_unlock(&vport->vmid_lock); 328 if (vport->vmid_priority_tagging) 329 r = lpfc_vmid_uvem(vport, vmp, false); 330 else 331 r = lpfc_vmid_cmd(vport, 332 SLI_CTAS_DAPP_IDENT, 333 vmp); 334 335 /* decrement number of active vms and mark */ 336 /* entry in slot as free */ 337 write_lock(&vport->vmid_lock); 338 if (!r) { 339 struct lpfc_vmid *ht = vmp; 340 341 vport->cur_vmid_cnt--; 342 ht->flag = LPFC_VMID_SLOT_FREE; 343 free_percpu(ht->last_io_time); 344 ht->last_io_time = NULL; 345 hash_del(&ht->hnode); 346 } 347 } 348 } 349 } 350 out: 351 write_unlock(&vport->vmid_lock); 352 } 353 354 /** 355 * lpfc_check_inactive_vmid - VMID inactivity checker 356 * @phba: Pointer to hba context object. 357 * 358 * This function is called from the worker thread to determine if an entry in 359 * the VMID table can be released since there was no I/O activity seen from that 360 * particular VM for the specified time. When this happens, the entry in the 361 * table is released and also the resources on the switch cleared. 362 **/ 363 364 static void lpfc_check_inactive_vmid(struct lpfc_hba *phba) 365 { 366 struct lpfc_vport *vport; 367 struct lpfc_vport **vports; 368 int i; 369 370 vports = lpfc_create_vport_work_array(phba); 371 if (!vports) 372 return; 373 374 for (i = 0; i <= phba->max_vports; i++) { 375 if ((!vports[i]) && (i == 0)) 376 vport = phba->pport; 377 else 378 vport = vports[i]; 379 if (!vport) 380 break; 381 382 lpfc_check_inactive_vmid_one(vport); 383 } 384 lpfc_destroy_vport_work_array(phba, vports); 385 } 386 387 /** 388 * lpfc_check_nlp_post_devloss - Check to restore ndlp refcnt after devloss 389 * @vport: Pointer to vport object. 390 * @ndlp: Pointer to remote node object. 391 * 392 * If NLP_IN_RECOV_POST_DEV_LOSS flag was set due to outstanding recovery of 393 * node during dev_loss_tmo processing, then this function restores the nlp_put 394 * kref decrement from lpfc_dev_loss_tmo_handler. 395 **/ 396 void 397 lpfc_check_nlp_post_devloss(struct lpfc_vport *vport, 398 struct lpfc_nodelist *ndlp) 399 { 400 unsigned long iflags; 401 402 spin_lock_irqsave(&ndlp->lock, iflags); 403 if (ndlp->save_flags & NLP_IN_RECOV_POST_DEV_LOSS) { 404 ndlp->save_flags &= ~NLP_IN_RECOV_POST_DEV_LOSS; 405 spin_unlock_irqrestore(&ndlp->lock, iflags); 406 lpfc_nlp_get(ndlp); 407 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY | LOG_NODE, 408 "8438 Devloss timeout reversed on DID x%x " 409 "refcnt %d ndlp %p flag x%x " 410 "port_state = x%x\n", 411 ndlp->nlp_DID, kref_read(&ndlp->kref), ndlp, 412 ndlp->nlp_flag, vport->port_state); 413 return; 414 } 415 spin_unlock_irqrestore(&ndlp->lock, iflags); 416 } 417 418 /** 419 * lpfc_dev_loss_tmo_handler - Remote node devloss timeout handler 420 * @ndlp: Pointer to remote node object. 421 * 422 * This function is called from the worker thread when devloss timeout timer 423 * expires. For SLI4 host, this routine shall return 1 when at lease one 424 * remote node, including this @ndlp, is still in use of FCF; otherwise, this 425 * routine shall return 0 when there is no remote node is still in use of FCF 426 * when devloss timeout happened to this @ndlp. 427 **/ 428 static int 429 lpfc_dev_loss_tmo_handler(struct lpfc_nodelist *ndlp) 430 { 431 struct lpfc_vport *vport; 432 struct lpfc_hba *phba; 433 uint8_t *name; 434 int warn_on = 0; 435 int fcf_inuse = 0; 436 bool recovering = false; 437 struct fc_vport *fc_vport = NULL; 438 unsigned long iflags; 439 440 vport = ndlp->vport; 441 name = (uint8_t *)&ndlp->nlp_portname; 442 phba = vport->phba; 443 444 if (phba->sli_rev == LPFC_SLI_REV4) 445 fcf_inuse = lpfc_fcf_inuse(phba); 446 447 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT, 448 "rport devlosstmo:did:x%x type:x%x id:x%x", 449 ndlp->nlp_DID, ndlp->nlp_type, ndlp->nlp_sid); 450 451 lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_NODE, 452 "3182 %s x%06x, nflag x%x xflags x%x refcnt %d\n", 453 __func__, ndlp->nlp_DID, ndlp->nlp_flag, 454 ndlp->fc4_xpt_flags, kref_read(&ndlp->kref)); 455 456 /* If the driver is recovering the rport, ignore devloss. */ 457 if (ndlp->nlp_state == NLP_STE_MAPPED_NODE) { 458 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, 459 "0284 Devloss timeout Ignored on " 460 "WWPN %x:%x:%x:%x:%x:%x:%x:%x " 461 "NPort x%x\n", 462 *name, *(name+1), *(name+2), *(name+3), 463 *(name+4), *(name+5), *(name+6), *(name+7), 464 ndlp->nlp_DID); 465 466 spin_lock_irqsave(&ndlp->lock, iflags); 467 ndlp->nlp_flag &= ~NLP_IN_DEV_LOSS; 468 spin_unlock_irqrestore(&ndlp->lock, iflags); 469 return fcf_inuse; 470 } 471 472 /* Fabric nodes are done. */ 473 if (ndlp->nlp_type & NLP_FABRIC) { 474 spin_lock_irqsave(&ndlp->lock, iflags); 475 476 /* The driver has to account for a race between any fabric 477 * node that's in recovery when dev_loss_tmo expires. When this 478 * happens, the driver has to allow node recovery. 479 */ 480 switch (ndlp->nlp_DID) { 481 case Fabric_DID: 482 fc_vport = vport->fc_vport; 483 if (fc_vport) { 484 /* NPIV path. */ 485 if (fc_vport->vport_state == 486 FC_VPORT_INITIALIZING) 487 recovering = true; 488 } else { 489 /* Physical port path. */ 490 if (test_bit(HBA_FLOGI_OUTSTANDING, 491 &phba->hba_flag)) 492 recovering = true; 493 } 494 break; 495 case Fabric_Cntl_DID: 496 if (ndlp->nlp_flag & NLP_REG_LOGIN_SEND) 497 recovering = true; 498 break; 499 case FDMI_DID: 500 fallthrough; 501 case NameServer_DID: 502 if (ndlp->nlp_state >= NLP_STE_PLOGI_ISSUE && 503 ndlp->nlp_state <= NLP_STE_REG_LOGIN_ISSUE) 504 recovering = true; 505 break; 506 default: 507 /* Ensure the nlp_DID at least has the correct prefix. 508 * The fabric domain controller's last three nibbles 509 * vary so we handle it in the default case. 510 */ 511 if (ndlp->nlp_DID & Fabric_DID_MASK) { 512 if (ndlp->nlp_state >= NLP_STE_PLOGI_ISSUE && 513 ndlp->nlp_state <= NLP_STE_REG_LOGIN_ISSUE) 514 recovering = true; 515 } 516 break; 517 } 518 spin_unlock_irqrestore(&ndlp->lock, iflags); 519 520 /* Mark an NLP_IN_RECOV_POST_DEV_LOSS flag to know if reversing 521 * the following lpfc_nlp_put is necessary after fabric node is 522 * recovered. 523 */ 524 if (recovering) { 525 lpfc_printf_vlog(vport, KERN_INFO, 526 LOG_DISCOVERY | LOG_NODE, 527 "8436 Devloss timeout marked on " 528 "DID x%x refcnt %d ndlp %p " 529 "flag x%x port_state = x%x\n", 530 ndlp->nlp_DID, kref_read(&ndlp->kref), 531 ndlp, ndlp->nlp_flag, 532 vport->port_state); 533 spin_lock_irqsave(&ndlp->lock, iflags); 534 ndlp->save_flags |= NLP_IN_RECOV_POST_DEV_LOSS; 535 spin_unlock_irqrestore(&ndlp->lock, iflags); 536 } else if (ndlp->nlp_state == NLP_STE_UNMAPPED_NODE) { 537 /* Fabric node fully recovered before this dev_loss_tmo 538 * queue work is processed. Thus, ignore the 539 * dev_loss_tmo event. 540 */ 541 lpfc_printf_vlog(vport, KERN_INFO, 542 LOG_DISCOVERY | LOG_NODE, 543 "8437 Devloss timeout ignored on " 544 "DID x%x refcnt %d ndlp %p " 545 "flag x%x port_state = x%x\n", 546 ndlp->nlp_DID, kref_read(&ndlp->kref), 547 ndlp, ndlp->nlp_flag, 548 vport->port_state); 549 return fcf_inuse; 550 } 551 552 spin_lock_irqsave(&ndlp->lock, iflags); 553 ndlp->nlp_flag &= ~NLP_IN_DEV_LOSS; 554 spin_unlock_irqrestore(&ndlp->lock, iflags); 555 lpfc_nlp_put(ndlp); 556 return fcf_inuse; 557 } 558 559 if (ndlp->nlp_sid != NLP_NO_SID) { 560 warn_on = 1; 561 lpfc_sli_abort_iocb(vport, ndlp->nlp_sid, 0, LPFC_CTX_TGT); 562 } 563 564 if (warn_on) { 565 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 566 "0203 Devloss timeout on " 567 "WWPN %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x " 568 "NPort x%06x Data: x%x x%x x%x refcnt %d\n", 569 *name, *(name+1), *(name+2), *(name+3), 570 *(name+4), *(name+5), *(name+6), *(name+7), 571 ndlp->nlp_DID, ndlp->nlp_flag, 572 ndlp->nlp_state, ndlp->nlp_rpi, 573 kref_read(&ndlp->kref)); 574 } else { 575 lpfc_printf_vlog(vport, KERN_INFO, LOG_TRACE_EVENT, 576 "0204 Devloss timeout on " 577 "WWPN %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x " 578 "NPort x%06x Data: x%x x%x x%x\n", 579 *name, *(name+1), *(name+2), *(name+3), 580 *(name+4), *(name+5), *(name+6), *(name+7), 581 ndlp->nlp_DID, ndlp->nlp_flag, 582 ndlp->nlp_state, ndlp->nlp_rpi); 583 } 584 spin_lock_irqsave(&ndlp->lock, iflags); 585 ndlp->nlp_flag &= ~NLP_IN_DEV_LOSS; 586 spin_unlock_irqrestore(&ndlp->lock, iflags); 587 588 /* If we are devloss, but we are in the process of rediscovering the 589 * ndlp, don't issue a NLP_EVT_DEVICE_RM event. 590 */ 591 if (ndlp->nlp_state >= NLP_STE_PLOGI_ISSUE && 592 ndlp->nlp_state <= NLP_STE_PRLI_ISSUE) { 593 return fcf_inuse; 594 } 595 596 if (!(ndlp->fc4_xpt_flags & NVME_XPT_REGD)) 597 lpfc_disc_state_machine(vport, ndlp, NULL, NLP_EVT_DEVICE_RM); 598 599 return fcf_inuse; 600 } 601 602 static void lpfc_check_vmid_qfpa_issue(struct lpfc_hba *phba) 603 { 604 struct lpfc_vport *vport; 605 struct lpfc_vport **vports; 606 int i; 607 608 vports = lpfc_create_vport_work_array(phba); 609 if (!vports) 610 return; 611 612 for (i = 0; i <= phba->max_vports; i++) { 613 if ((!vports[i]) && (i == 0)) 614 vport = phba->pport; 615 else 616 vport = vports[i]; 617 if (!vport) 618 break; 619 620 if (vport->vmid_flag & LPFC_VMID_ISSUE_QFPA) { 621 if (!lpfc_issue_els_qfpa(vport)) 622 vport->vmid_flag &= ~LPFC_VMID_ISSUE_QFPA; 623 } 624 } 625 lpfc_destroy_vport_work_array(phba, vports); 626 } 627 628 /** 629 * lpfc_sli4_post_dev_loss_tmo_handler - SLI4 post devloss timeout handler 630 * @phba: Pointer to hba context object. 631 * @fcf_inuse: SLI4 FCF in-use state reported from devloss timeout handler. 632 * @nlp_did: remote node identifer with devloss timeout. 633 * 634 * This function is called from the worker thread after invoking devloss 635 * timeout handler and releasing the reference count for the ndlp with 636 * which the devloss timeout was handled for SLI4 host. For the devloss 637 * timeout of the last remote node which had been in use of FCF, when this 638 * routine is invoked, it shall be guaranteed that none of the remote are 639 * in-use of FCF. When devloss timeout to the last remote using the FCF, 640 * if the FIP engine is neither in FCF table scan process nor roundrobin 641 * failover process, the in-use FCF shall be unregistered. If the FIP 642 * engine is in FCF discovery process, the devloss timeout state shall 643 * be set for either the FCF table scan process or roundrobin failover 644 * process to unregister the in-use FCF. 645 **/ 646 static void 647 lpfc_sli4_post_dev_loss_tmo_handler(struct lpfc_hba *phba, int fcf_inuse, 648 uint32_t nlp_did) 649 { 650 /* If devloss timeout happened to a remote node when FCF had no 651 * longer been in-use, do nothing. 652 */ 653 if (!fcf_inuse) 654 return; 655 656 if (test_bit(HBA_FIP_SUPPORT, &phba->hba_flag) && 657 !lpfc_fcf_inuse(phba)) { 658 spin_lock_irq(&phba->hbalock); 659 if (phba->fcf.fcf_flag & FCF_DISCOVERY) { 660 if (test_and_set_bit(HBA_DEVLOSS_TMO, 661 &phba->hba_flag)) { 662 spin_unlock_irq(&phba->hbalock); 663 return; 664 } 665 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 666 "2847 Last remote node (x%x) using " 667 "FCF devloss tmo\n", nlp_did); 668 } 669 if (phba->fcf.fcf_flag & FCF_REDISC_PROG) { 670 spin_unlock_irq(&phba->hbalock); 671 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 672 "2868 Devloss tmo to FCF rediscovery " 673 "in progress\n"); 674 return; 675 } 676 spin_unlock_irq(&phba->hbalock); 677 if (!test_bit(FCF_TS_INPROG, &phba->hba_flag) && 678 !test_bit(FCF_RR_INPROG, &phba->hba_flag)) { 679 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 680 "2869 Devloss tmo to idle FIP engine, " 681 "unreg in-use FCF and rescan.\n"); 682 /* Unregister in-use FCF and rescan */ 683 lpfc_unregister_fcf_rescan(phba); 684 return; 685 } 686 if (test_bit(FCF_TS_INPROG, &phba->hba_flag)) 687 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 688 "2870 FCF table scan in progress\n"); 689 if (test_bit(FCF_RR_INPROG, &phba->hba_flag)) 690 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 691 "2871 FLOGI roundrobin FCF failover " 692 "in progress\n"); 693 } 694 lpfc_unregister_unused_fcf(phba); 695 } 696 697 /** 698 * lpfc_alloc_fast_evt - Allocates data structure for posting event 699 * @phba: Pointer to hba context object. 700 * 701 * This function is called from the functions which need to post 702 * events from interrupt context. This function allocates data 703 * structure required for posting event. It also keeps track of 704 * number of events pending and prevent event storm when there are 705 * too many events. 706 **/ 707 struct lpfc_fast_path_event * 708 lpfc_alloc_fast_evt(struct lpfc_hba *phba) { 709 struct lpfc_fast_path_event *ret; 710 711 /* If there are lot of fast event do not exhaust memory due to this */ 712 if (atomic_read(&phba->fast_event_count) > LPFC_MAX_EVT_COUNT) 713 return NULL; 714 715 ret = kzalloc(sizeof(struct lpfc_fast_path_event), 716 GFP_ATOMIC); 717 if (ret) { 718 atomic_inc(&phba->fast_event_count); 719 INIT_LIST_HEAD(&ret->work_evt.evt_listp); 720 ret->work_evt.evt = LPFC_EVT_FASTPATH_MGMT_EVT; 721 } 722 return ret; 723 } 724 725 /** 726 * lpfc_free_fast_evt - Frees event data structure 727 * @phba: Pointer to hba context object. 728 * @evt: Event object which need to be freed. 729 * 730 * This function frees the data structure required for posting 731 * events. 732 **/ 733 void 734 lpfc_free_fast_evt(struct lpfc_hba *phba, 735 struct lpfc_fast_path_event *evt) { 736 737 atomic_dec(&phba->fast_event_count); 738 kfree(evt); 739 } 740 741 /** 742 * lpfc_send_fastpath_evt - Posts events generated from fast path 743 * @phba: Pointer to hba context object. 744 * @evtp: Event data structure. 745 * 746 * This function is called from worker thread, when the interrupt 747 * context need to post an event. This function posts the event 748 * to fc transport netlink interface. 749 **/ 750 static void 751 lpfc_send_fastpath_evt(struct lpfc_hba *phba, 752 struct lpfc_work_evt *evtp) 753 { 754 unsigned long evt_category, evt_sub_category; 755 struct lpfc_fast_path_event *fast_evt_data; 756 char *evt_data; 757 uint32_t evt_data_size; 758 struct Scsi_Host *shost; 759 760 fast_evt_data = container_of(evtp, struct lpfc_fast_path_event, 761 work_evt); 762 763 evt_category = (unsigned long) fast_evt_data->un.fabric_evt.event_type; 764 evt_sub_category = (unsigned long) fast_evt_data->un. 765 fabric_evt.subcategory; 766 shost = lpfc_shost_from_vport(fast_evt_data->vport); 767 if (evt_category == FC_REG_FABRIC_EVENT) { 768 if (evt_sub_category == LPFC_EVENT_FCPRDCHKERR) { 769 evt_data = (char *) &fast_evt_data->un.read_check_error; 770 evt_data_size = sizeof(fast_evt_data->un. 771 read_check_error); 772 } else if ((evt_sub_category == LPFC_EVENT_FABRIC_BUSY) || 773 (evt_sub_category == LPFC_EVENT_PORT_BUSY)) { 774 evt_data = (char *) &fast_evt_data->un.fabric_evt; 775 evt_data_size = sizeof(fast_evt_data->un.fabric_evt); 776 } else { 777 lpfc_free_fast_evt(phba, fast_evt_data); 778 return; 779 } 780 } else if (evt_category == FC_REG_SCSI_EVENT) { 781 switch (evt_sub_category) { 782 case LPFC_EVENT_QFULL: 783 case LPFC_EVENT_DEVBSY: 784 evt_data = (char *) &fast_evt_data->un.scsi_evt; 785 evt_data_size = sizeof(fast_evt_data->un.scsi_evt); 786 break; 787 case LPFC_EVENT_CHECK_COND: 788 evt_data = (char *) &fast_evt_data->un.check_cond_evt; 789 evt_data_size = sizeof(fast_evt_data->un. 790 check_cond_evt); 791 break; 792 case LPFC_EVENT_VARQUEDEPTH: 793 evt_data = (char *) &fast_evt_data->un.queue_depth_evt; 794 evt_data_size = sizeof(fast_evt_data->un. 795 queue_depth_evt); 796 break; 797 default: 798 lpfc_free_fast_evt(phba, fast_evt_data); 799 return; 800 } 801 } else { 802 lpfc_free_fast_evt(phba, fast_evt_data); 803 return; 804 } 805 806 if (phba->cfg_enable_fc4_type != LPFC_ENABLE_NVME) 807 fc_host_post_vendor_event(shost, 808 fc_get_event_number(), 809 evt_data_size, 810 evt_data, 811 LPFC_NL_VENDOR_ID); 812 813 lpfc_free_fast_evt(phba, fast_evt_data); 814 return; 815 } 816 817 static void 818 lpfc_work_list_done(struct lpfc_hba *phba) 819 { 820 struct lpfc_work_evt *evtp = NULL; 821 struct lpfc_nodelist *ndlp; 822 int free_evt; 823 int fcf_inuse; 824 uint32_t nlp_did; 825 bool hba_pci_err; 826 827 spin_lock_irq(&phba->hbalock); 828 while (!list_empty(&phba->work_list)) { 829 list_remove_head((&phba->work_list), evtp, typeof(*evtp), 830 evt_listp); 831 spin_unlock_irq(&phba->hbalock); 832 hba_pci_err = test_bit(HBA_PCI_ERR, &phba->bit_flags); 833 free_evt = 1; 834 switch (evtp->evt) { 835 case LPFC_EVT_ELS_RETRY: 836 ndlp = (struct lpfc_nodelist *) (evtp->evt_arg1); 837 if (!hba_pci_err) { 838 lpfc_els_retry_delay_handler(ndlp); 839 free_evt = 0; /* evt is part of ndlp */ 840 } 841 /* decrement the node reference count held 842 * for this queued work 843 */ 844 lpfc_nlp_put(ndlp); 845 break; 846 case LPFC_EVT_DEV_LOSS: 847 ndlp = (struct lpfc_nodelist *)(evtp->evt_arg1); 848 fcf_inuse = lpfc_dev_loss_tmo_handler(ndlp); 849 free_evt = 0; 850 /* decrement the node reference count held for 851 * this queued work 852 */ 853 nlp_did = ndlp->nlp_DID; 854 lpfc_nlp_put(ndlp); 855 if (phba->sli_rev == LPFC_SLI_REV4) 856 lpfc_sli4_post_dev_loss_tmo_handler(phba, 857 fcf_inuse, 858 nlp_did); 859 break; 860 case LPFC_EVT_RECOVER_PORT: 861 ndlp = (struct lpfc_nodelist *)(evtp->evt_arg1); 862 if (!hba_pci_err) { 863 lpfc_sli_abts_recover_port(ndlp->vport, ndlp); 864 free_evt = 0; 865 } 866 /* decrement the node reference count held for 867 * this queued work 868 */ 869 lpfc_nlp_put(ndlp); 870 break; 871 case LPFC_EVT_ONLINE: 872 if (phba->link_state < LPFC_LINK_DOWN) 873 *(int *) (evtp->evt_arg1) = lpfc_online(phba); 874 else 875 *(int *) (evtp->evt_arg1) = 0; 876 complete((struct completion *)(evtp->evt_arg2)); 877 break; 878 case LPFC_EVT_OFFLINE_PREP: 879 if (phba->link_state >= LPFC_LINK_DOWN) 880 lpfc_offline_prep(phba, LPFC_MBX_WAIT); 881 *(int *)(evtp->evt_arg1) = 0; 882 complete((struct completion *)(evtp->evt_arg2)); 883 break; 884 case LPFC_EVT_OFFLINE: 885 lpfc_offline(phba); 886 lpfc_sli_brdrestart(phba); 887 *(int *)(evtp->evt_arg1) = 888 lpfc_sli_brdready(phba, HS_FFRDY | HS_MBRDY); 889 lpfc_unblock_mgmt_io(phba); 890 complete((struct completion *)(evtp->evt_arg2)); 891 break; 892 case LPFC_EVT_WARM_START: 893 lpfc_offline(phba); 894 lpfc_reset_barrier(phba); 895 lpfc_sli_brdreset(phba); 896 lpfc_hba_down_post(phba); 897 *(int *)(evtp->evt_arg1) = 898 lpfc_sli_brdready(phba, HS_MBRDY); 899 lpfc_unblock_mgmt_io(phba); 900 complete((struct completion *)(evtp->evt_arg2)); 901 break; 902 case LPFC_EVT_KILL: 903 lpfc_offline(phba); 904 *(int *)(evtp->evt_arg1) 905 = (phba->pport->stopped) 906 ? 0 : lpfc_sli_brdkill(phba); 907 lpfc_unblock_mgmt_io(phba); 908 complete((struct completion *)(evtp->evt_arg2)); 909 break; 910 case LPFC_EVT_FASTPATH_MGMT_EVT: 911 lpfc_send_fastpath_evt(phba, evtp); 912 free_evt = 0; 913 break; 914 case LPFC_EVT_RESET_HBA: 915 if (!test_bit(FC_UNLOADING, &phba->pport->load_flag)) 916 lpfc_reset_hba(phba); 917 break; 918 } 919 if (free_evt) 920 kfree(evtp); 921 spin_lock_irq(&phba->hbalock); 922 } 923 spin_unlock_irq(&phba->hbalock); 924 925 } 926 927 static void 928 lpfc_work_done(struct lpfc_hba *phba) 929 { 930 struct lpfc_sli_ring *pring; 931 uint32_t ha_copy, status, control, work_port_events; 932 struct lpfc_vport **vports; 933 struct lpfc_vport *vport; 934 int i; 935 bool hba_pci_err; 936 937 hba_pci_err = test_bit(HBA_PCI_ERR, &phba->bit_flags); 938 spin_lock_irq(&phba->hbalock); 939 ha_copy = phba->work_ha; 940 phba->work_ha = 0; 941 spin_unlock_irq(&phba->hbalock); 942 if (hba_pci_err) 943 ha_copy = 0; 944 945 /* First, try to post the next mailbox command to SLI4 device */ 946 if (phba->pci_dev_grp == LPFC_PCI_DEV_OC && !hba_pci_err) 947 lpfc_sli4_post_async_mbox(phba); 948 949 if (ha_copy & HA_ERATT) { 950 /* Handle the error attention event */ 951 lpfc_handle_eratt(phba); 952 953 if (phba->fw_dump_cmpl) { 954 complete(phba->fw_dump_cmpl); 955 phba->fw_dump_cmpl = NULL; 956 } 957 } 958 959 if (ha_copy & HA_MBATT) 960 lpfc_sli_handle_mb_event(phba); 961 962 if (ha_copy & HA_LATT) 963 lpfc_handle_latt(phba); 964 965 /* Handle VMID Events */ 966 if (lpfc_is_vmid_enabled(phba) && !hba_pci_err) { 967 if (phba->pport->work_port_events & 968 WORKER_CHECK_VMID_ISSUE_QFPA) { 969 lpfc_check_vmid_qfpa_issue(phba); 970 phba->pport->work_port_events &= 971 ~WORKER_CHECK_VMID_ISSUE_QFPA; 972 } 973 if (phba->pport->work_port_events & 974 WORKER_CHECK_INACTIVE_VMID) { 975 lpfc_check_inactive_vmid(phba); 976 phba->pport->work_port_events &= 977 ~WORKER_CHECK_INACTIVE_VMID; 978 } 979 } 980 981 /* Process SLI4 events */ 982 if (phba->pci_dev_grp == LPFC_PCI_DEV_OC) { 983 if (test_bit(HBA_RRQ_ACTIVE, &phba->hba_flag)) 984 lpfc_handle_rrq_active(phba); 985 if (test_bit(ELS_XRI_ABORT_EVENT, &phba->hba_flag)) 986 lpfc_sli4_els_xri_abort_event_proc(phba); 987 if (test_bit(ASYNC_EVENT, &phba->hba_flag)) 988 lpfc_sli4_async_event_proc(phba); 989 if (test_and_clear_bit(HBA_POST_RECEIVE_BUFFER, 990 &phba->hba_flag)) 991 lpfc_sli_hbqbuf_add_hbqs(phba, LPFC_ELS_HBQ); 992 if (phba->fcf.fcf_flag & FCF_REDISC_EVT) 993 lpfc_sli4_fcf_redisc_event_proc(phba); 994 } 995 996 vports = lpfc_create_vport_work_array(phba); 997 if (vports != NULL) 998 for (i = 0; i <= phba->max_vports; i++) { 999 /* 1000 * We could have no vports in array if unloading, so if 1001 * this happens then just use the pport 1002 */ 1003 if (vports[i] == NULL && i == 0) 1004 vport = phba->pport; 1005 else 1006 vport = vports[i]; 1007 if (vport == NULL) 1008 break; 1009 spin_lock_irq(&vport->work_port_lock); 1010 work_port_events = vport->work_port_events; 1011 vport->work_port_events &= ~work_port_events; 1012 spin_unlock_irq(&vport->work_port_lock); 1013 if (hba_pci_err) 1014 continue; 1015 if (work_port_events & WORKER_DISC_TMO) 1016 lpfc_disc_timeout_handler(vport); 1017 if (work_port_events & WORKER_ELS_TMO) 1018 lpfc_els_timeout_handler(vport); 1019 if (work_port_events & WORKER_HB_TMO) 1020 lpfc_hb_timeout_handler(phba); 1021 if (work_port_events & WORKER_MBOX_TMO) 1022 lpfc_mbox_timeout_handler(phba); 1023 if (work_port_events & WORKER_FABRIC_BLOCK_TMO) 1024 lpfc_unblock_fabric_iocbs(phba); 1025 if (work_port_events & WORKER_RAMP_DOWN_QUEUE) 1026 lpfc_ramp_down_queue_handler(phba); 1027 if (work_port_events & WORKER_DELAYED_DISC_TMO) 1028 lpfc_delayed_disc_timeout_handler(vport); 1029 } 1030 lpfc_destroy_vport_work_array(phba, vports); 1031 1032 pring = lpfc_phba_elsring(phba); 1033 status = (ha_copy & (HA_RXMASK << (4*LPFC_ELS_RING))); 1034 status >>= (4*LPFC_ELS_RING); 1035 if (pring && (status & HA_RXMASK || 1036 pring->flag & LPFC_DEFERRED_RING_EVENT || 1037 test_bit(HBA_SP_QUEUE_EVT, &phba->hba_flag))) { 1038 if (pring->flag & LPFC_STOP_IOCB_EVENT) { 1039 pring->flag |= LPFC_DEFERRED_RING_EVENT; 1040 /* Preserve legacy behavior. */ 1041 if (!test_bit(HBA_SP_QUEUE_EVT, &phba->hba_flag)) 1042 set_bit(LPFC_DATA_READY, &phba->data_flags); 1043 } else { 1044 /* Driver could have abort request completed in queue 1045 * when link goes down. Allow for this transition. 1046 */ 1047 if (phba->link_state >= LPFC_LINK_DOWN || 1048 phba->link_flag & LS_MDS_LOOPBACK) { 1049 pring->flag &= ~LPFC_DEFERRED_RING_EVENT; 1050 lpfc_sli_handle_slow_ring_event(phba, pring, 1051 (status & 1052 HA_RXMASK)); 1053 } 1054 } 1055 if (phba->sli_rev == LPFC_SLI_REV4) 1056 lpfc_drain_txq(phba); 1057 /* 1058 * Turn on Ring interrupts 1059 */ 1060 if (phba->sli_rev <= LPFC_SLI_REV3) { 1061 spin_lock_irq(&phba->hbalock); 1062 control = readl(phba->HCregaddr); 1063 if (!(control & (HC_R0INT_ENA << LPFC_ELS_RING))) { 1064 lpfc_debugfs_slow_ring_trc(phba, 1065 "WRK Enable ring: cntl:x%x hacopy:x%x", 1066 control, ha_copy, 0); 1067 1068 control |= (HC_R0INT_ENA << LPFC_ELS_RING); 1069 writel(control, phba->HCregaddr); 1070 readl(phba->HCregaddr); /* flush */ 1071 } else { 1072 lpfc_debugfs_slow_ring_trc(phba, 1073 "WRK Ring ok: cntl:x%x hacopy:x%x", 1074 control, ha_copy, 0); 1075 } 1076 spin_unlock_irq(&phba->hbalock); 1077 } 1078 } 1079 lpfc_work_list_done(phba); 1080 } 1081 1082 int 1083 lpfc_do_work(void *p) 1084 { 1085 struct lpfc_hba *phba = p; 1086 int rc; 1087 1088 set_user_nice(current, MIN_NICE); 1089 current->flags |= PF_NOFREEZE; 1090 phba->data_flags = 0; 1091 1092 while (!kthread_should_stop()) { 1093 /* wait and check worker queue activities */ 1094 rc = wait_event_interruptible(phba->work_waitq, 1095 (test_and_clear_bit(LPFC_DATA_READY, 1096 &phba->data_flags) 1097 || kthread_should_stop())); 1098 /* Signal wakeup shall terminate the worker thread */ 1099 if (rc) { 1100 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 1101 "0433 Wakeup on signal: rc=x%x\n", rc); 1102 break; 1103 } 1104 1105 /* Attend pending lpfc data processing */ 1106 lpfc_work_done(phba); 1107 } 1108 phba->worker_thread = NULL; 1109 lpfc_printf_log(phba, KERN_INFO, LOG_ELS, 1110 "0432 Worker thread stopped.\n"); 1111 return 0; 1112 } 1113 1114 /* 1115 * This is only called to handle FC worker events. Since this a rare 1116 * occurrence, we allocate a struct lpfc_work_evt structure here instead of 1117 * embedding it in the IOCB. 1118 */ 1119 int 1120 lpfc_workq_post_event(struct lpfc_hba *phba, void *arg1, void *arg2, 1121 uint32_t evt) 1122 { 1123 struct lpfc_work_evt *evtp; 1124 unsigned long flags; 1125 1126 /* 1127 * All Mailbox completions and LPFC_ELS_RING rcv ring IOCB events will 1128 * be queued to worker thread for processing 1129 */ 1130 evtp = kmalloc(sizeof(struct lpfc_work_evt), GFP_ATOMIC); 1131 if (!evtp) 1132 return 0; 1133 1134 evtp->evt_arg1 = arg1; 1135 evtp->evt_arg2 = arg2; 1136 evtp->evt = evt; 1137 1138 spin_lock_irqsave(&phba->hbalock, flags); 1139 list_add_tail(&evtp->evt_listp, &phba->work_list); 1140 spin_unlock_irqrestore(&phba->hbalock, flags); 1141 1142 lpfc_worker_wake_up(phba); 1143 1144 return 1; 1145 } 1146 1147 void 1148 lpfc_cleanup_rpis(struct lpfc_vport *vport, int remove) 1149 { 1150 struct lpfc_hba *phba = vport->phba; 1151 struct lpfc_nodelist *ndlp, *next_ndlp; 1152 1153 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) { 1154 if ((phba->sli3_options & LPFC_SLI3_VPORT_TEARDOWN) || 1155 ((vport->port_type == LPFC_NPIV_PORT) && 1156 ((ndlp->nlp_DID == NameServer_DID) || 1157 (ndlp->nlp_DID == FDMI_DID) || 1158 (ndlp->nlp_DID == Fabric_Cntl_DID)))) 1159 lpfc_unreg_rpi(vport, ndlp); 1160 1161 /* Leave Fabric nodes alone on link down */ 1162 if ((phba->sli_rev < LPFC_SLI_REV4) && 1163 (!remove && ndlp->nlp_type & NLP_FABRIC)) 1164 continue; 1165 1166 /* Notify transport of connectivity loss to trigger cleanup. */ 1167 if (phba->nvmet_support && 1168 ndlp->nlp_state == NLP_STE_UNMAPPED_NODE) 1169 lpfc_nvmet_invalidate_host(phba, ndlp); 1170 1171 lpfc_disc_state_machine(vport, ndlp, NULL, 1172 remove 1173 ? NLP_EVT_DEVICE_RM 1174 : NLP_EVT_DEVICE_RECOVERY); 1175 } 1176 if (phba->sli3_options & LPFC_SLI3_VPORT_TEARDOWN) { 1177 if (phba->sli_rev == LPFC_SLI_REV4) 1178 lpfc_sli4_unreg_all_rpis(vport); 1179 lpfc_mbx_unreg_vpi(vport); 1180 set_bit(FC_VPORT_NEEDS_REG_VPI, &vport->fc_flag); 1181 } 1182 } 1183 1184 void 1185 lpfc_port_link_failure(struct lpfc_vport *vport) 1186 { 1187 lpfc_vport_set_state(vport, FC_VPORT_LINKDOWN); 1188 1189 /* Cleanup any outstanding received buffers */ 1190 lpfc_cleanup_rcv_buffers(vport); 1191 1192 /* Cleanup any outstanding RSCN activity */ 1193 lpfc_els_flush_rscn(vport); 1194 1195 /* Cleanup any outstanding ELS commands */ 1196 lpfc_els_flush_cmd(vport); 1197 1198 lpfc_cleanup_rpis(vport, 0); 1199 1200 /* Turn off discovery timer if its running */ 1201 lpfc_can_disctmo(vport); 1202 } 1203 1204 void 1205 lpfc_linkdown_port(struct lpfc_vport *vport) 1206 { 1207 struct lpfc_hba *phba = vport->phba; 1208 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 1209 1210 if (vport->cfg_enable_fc4_type != LPFC_ENABLE_NVME) 1211 fc_host_post_event(shost, fc_get_event_number(), 1212 FCH_EVT_LINKDOWN, 0); 1213 1214 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, 1215 "Link Down: state:x%x rtry:x%x flg:x%x", 1216 vport->port_state, vport->fc_ns_retry, vport->fc_flag); 1217 1218 lpfc_port_link_failure(vport); 1219 1220 /* Stop delayed Nport discovery */ 1221 clear_bit(FC_DISC_DELAYED, &vport->fc_flag); 1222 del_timer_sync(&vport->delayed_disc_tmo); 1223 1224 if (phba->sli_rev == LPFC_SLI_REV4 && 1225 vport->port_type == LPFC_PHYSICAL_PORT && 1226 phba->sli4_hba.fawwpn_flag & LPFC_FAWWPN_CONFIG) { 1227 /* Assume success on link up */ 1228 phba->sli4_hba.fawwpn_flag |= LPFC_FAWWPN_FABRIC; 1229 } 1230 } 1231 1232 int 1233 lpfc_linkdown(struct lpfc_hba *phba) 1234 { 1235 struct lpfc_vport *vport = phba->pport; 1236 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 1237 struct lpfc_vport **vports; 1238 LPFC_MBOXQ_t *mb; 1239 int i; 1240 int offline; 1241 1242 if (phba->link_state == LPFC_LINK_DOWN) 1243 return 0; 1244 1245 /* Block all SCSI stack I/Os */ 1246 lpfc_scsi_dev_block(phba); 1247 offline = pci_channel_offline(phba->pcidev); 1248 1249 phba->defer_flogi_acc_flag = false; 1250 1251 /* Clear external loopback plug detected flag */ 1252 phba->link_flag &= ~LS_EXTERNAL_LOOPBACK; 1253 1254 spin_lock_irq(&phba->hbalock); 1255 phba->fcf.fcf_flag &= ~(FCF_AVAILABLE | FCF_SCAN_DONE); 1256 spin_unlock_irq(&phba->hbalock); 1257 if (phba->link_state > LPFC_LINK_DOWN) { 1258 phba->link_state = LPFC_LINK_DOWN; 1259 if (phba->sli4_hba.conf_trunk) { 1260 phba->trunk_link.link0.state = 0; 1261 phba->trunk_link.link1.state = 0; 1262 phba->trunk_link.link2.state = 0; 1263 phba->trunk_link.link3.state = 0; 1264 phba->trunk_link.phy_lnk_speed = 1265 LPFC_LINK_SPEED_UNKNOWN; 1266 phba->sli4_hba.link_state.logical_speed = 1267 LPFC_LINK_SPEED_UNKNOWN; 1268 } 1269 clear_bit(FC_LBIT, &phba->pport->fc_flag); 1270 } 1271 vports = lpfc_create_vport_work_array(phba); 1272 if (vports != NULL) { 1273 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) { 1274 /* Issue a LINK DOWN event to all nodes */ 1275 lpfc_linkdown_port(vports[i]); 1276 1277 vports[i]->fc_myDID = 0; 1278 1279 if ((vport->cfg_enable_fc4_type == LPFC_ENABLE_BOTH) || 1280 (vport->cfg_enable_fc4_type == LPFC_ENABLE_NVME)) { 1281 if (phba->nvmet_support) 1282 lpfc_nvmet_update_targetport(phba); 1283 else 1284 lpfc_nvme_update_localport(vports[i]); 1285 } 1286 } 1287 } 1288 lpfc_destroy_vport_work_array(phba, vports); 1289 1290 /* Clean up any SLI3 firmware default rpi's */ 1291 if (phba->sli_rev > LPFC_SLI_REV3 || offline) 1292 goto skip_unreg_did; 1293 1294 mb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 1295 if (mb) { 1296 lpfc_unreg_did(phba, 0xffff, LPFC_UNREG_ALL_DFLT_RPIS, mb); 1297 mb->vport = vport; 1298 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl; 1299 if (lpfc_sli_issue_mbox(phba, mb, MBX_NOWAIT) 1300 == MBX_NOT_FINISHED) { 1301 mempool_free(mb, phba->mbox_mem_pool); 1302 } 1303 } 1304 1305 skip_unreg_did: 1306 /* Setup myDID for link up if we are in pt2pt mode */ 1307 if (test_bit(FC_PT2PT, &phba->pport->fc_flag)) { 1308 mb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 1309 if (mb) { 1310 lpfc_config_link(phba, mb); 1311 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl; 1312 mb->vport = vport; 1313 if (lpfc_sli_issue_mbox(phba, mb, MBX_NOWAIT) 1314 == MBX_NOT_FINISHED) { 1315 mempool_free(mb, phba->mbox_mem_pool); 1316 } 1317 } 1318 clear_bit(FC_PT2PT, &phba->pport->fc_flag); 1319 clear_bit(FC_PT2PT_PLOGI, &phba->pport->fc_flag); 1320 spin_lock_irq(shost->host_lock); 1321 phba->pport->rcv_flogi_cnt = 0; 1322 spin_unlock_irq(shost->host_lock); 1323 } 1324 return 0; 1325 } 1326 1327 static void 1328 lpfc_linkup_cleanup_nodes(struct lpfc_vport *vport) 1329 { 1330 struct lpfc_nodelist *ndlp; 1331 1332 list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) { 1333 ndlp->nlp_fc4_type &= ~(NLP_FC4_FCP | NLP_FC4_NVME); 1334 1335 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE) 1336 continue; 1337 if (ndlp->nlp_type & NLP_FABRIC) { 1338 /* On Linkup its safe to clean up the ndlp 1339 * from Fabric connections. 1340 */ 1341 if (ndlp->nlp_DID != Fabric_DID) 1342 lpfc_unreg_rpi(vport, ndlp); 1343 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE); 1344 } else if (!(ndlp->nlp_flag & NLP_NPR_ADISC)) { 1345 /* Fail outstanding IO now since device is 1346 * marked for PLOGI. 1347 */ 1348 lpfc_unreg_rpi(vport, ndlp); 1349 } 1350 } 1351 } 1352 1353 static void 1354 lpfc_linkup_port(struct lpfc_vport *vport) 1355 { 1356 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 1357 struct lpfc_hba *phba = vport->phba; 1358 1359 if (test_bit(FC_UNLOADING, &vport->load_flag)) 1360 return; 1361 1362 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, 1363 "Link Up: top:x%x speed:x%x flg:x%x", 1364 phba->fc_topology, phba->fc_linkspeed, phba->link_flag); 1365 1366 /* If NPIV is not enabled, only bring the physical port up */ 1367 if (!(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) && 1368 (vport != phba->pport)) 1369 return; 1370 1371 if (phba->defer_flogi_acc_flag) { 1372 clear_bit(FC_ABORT_DISCOVERY, &vport->fc_flag); 1373 clear_bit(FC_RSCN_MODE, &vport->fc_flag); 1374 clear_bit(FC_NLP_MORE, &vport->fc_flag); 1375 clear_bit(FC_RSCN_DISCOVERY, &vport->fc_flag); 1376 } else { 1377 clear_bit(FC_PT2PT, &vport->fc_flag); 1378 clear_bit(FC_PT2PT_PLOGI, &vport->fc_flag); 1379 clear_bit(FC_ABORT_DISCOVERY, &vport->fc_flag); 1380 clear_bit(FC_RSCN_MODE, &vport->fc_flag); 1381 clear_bit(FC_NLP_MORE, &vport->fc_flag); 1382 clear_bit(FC_RSCN_DISCOVERY, &vport->fc_flag); 1383 } 1384 set_bit(FC_NDISC_ACTIVE, &vport->fc_flag); 1385 1386 spin_lock_irq(shost->host_lock); 1387 vport->fc_ns_retry = 0; 1388 spin_unlock_irq(shost->host_lock); 1389 lpfc_setup_fdmi_mask(vport); 1390 1391 lpfc_linkup_cleanup_nodes(vport); 1392 } 1393 1394 static int 1395 lpfc_linkup(struct lpfc_hba *phba) 1396 { 1397 struct lpfc_vport **vports; 1398 int i; 1399 struct Scsi_Host *shost = lpfc_shost_from_vport(phba->pport); 1400 1401 phba->link_state = LPFC_LINK_UP; 1402 1403 /* Unblock fabric iocbs if they are blocked */ 1404 clear_bit(FABRIC_COMANDS_BLOCKED, &phba->bit_flags); 1405 del_timer_sync(&phba->fabric_block_timer); 1406 1407 vports = lpfc_create_vport_work_array(phba); 1408 if (vports != NULL) 1409 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) 1410 lpfc_linkup_port(vports[i]); 1411 lpfc_destroy_vport_work_array(phba, vports); 1412 1413 /* Clear the pport flogi counter in case the link down was 1414 * absorbed without an ACQE. No lock here - in worker thread 1415 * and discovery is synchronized. 1416 */ 1417 spin_lock_irq(shost->host_lock); 1418 phba->pport->rcv_flogi_cnt = 0; 1419 spin_unlock_irq(shost->host_lock); 1420 1421 /* reinitialize initial HBA flag */ 1422 clear_bit(HBA_FLOGI_ISSUED, &phba->hba_flag); 1423 clear_bit(HBA_RHBA_CMPL, &phba->hba_flag); 1424 1425 return 0; 1426 } 1427 1428 /* 1429 * This routine handles processing a CLEAR_LA mailbox 1430 * command upon completion. It is setup in the LPFC_MBOXQ 1431 * as the completion routine when the command is 1432 * handed off to the SLI layer. SLI3 only. 1433 */ 1434 static void 1435 lpfc_mbx_cmpl_clear_la(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 1436 { 1437 struct lpfc_vport *vport = pmb->vport; 1438 struct lpfc_sli *psli = &phba->sli; 1439 MAILBOX_t *mb = &pmb->u.mb; 1440 uint32_t control; 1441 1442 /* Since we don't do discovery right now, turn these off here */ 1443 psli->sli3_ring[LPFC_EXTRA_RING].flag &= ~LPFC_STOP_IOCB_EVENT; 1444 psli->sli3_ring[LPFC_FCP_RING].flag &= ~LPFC_STOP_IOCB_EVENT; 1445 1446 /* Check for error */ 1447 if ((mb->mbxStatus) && (mb->mbxStatus != 0x1601)) { 1448 /* CLEAR_LA mbox error <mbxStatus> state <hba_state> */ 1449 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 1450 "0320 CLEAR_LA mbxStatus error x%x hba " 1451 "state x%x\n", 1452 mb->mbxStatus, vport->port_state); 1453 phba->link_state = LPFC_HBA_ERROR; 1454 goto out; 1455 } 1456 1457 if (vport->port_type == LPFC_PHYSICAL_PORT) 1458 phba->link_state = LPFC_HBA_READY; 1459 1460 spin_lock_irq(&phba->hbalock); 1461 psli->sli_flag |= LPFC_PROCESS_LA; 1462 control = readl(phba->HCregaddr); 1463 control |= HC_LAINT_ENA; 1464 writel(control, phba->HCregaddr); 1465 readl(phba->HCregaddr); /* flush */ 1466 spin_unlock_irq(&phba->hbalock); 1467 mempool_free(pmb, phba->mbox_mem_pool); 1468 return; 1469 1470 out: 1471 /* Device Discovery completes */ 1472 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, 1473 "0225 Device Discovery completes\n"); 1474 mempool_free(pmb, phba->mbox_mem_pool); 1475 1476 clear_bit(FC_ABORT_DISCOVERY, &vport->fc_flag); 1477 1478 lpfc_can_disctmo(vport); 1479 1480 /* turn on Link Attention interrupts */ 1481 1482 spin_lock_irq(&phba->hbalock); 1483 psli->sli_flag |= LPFC_PROCESS_LA; 1484 control = readl(phba->HCregaddr); 1485 control |= HC_LAINT_ENA; 1486 writel(control, phba->HCregaddr); 1487 readl(phba->HCregaddr); /* flush */ 1488 spin_unlock_irq(&phba->hbalock); 1489 1490 return; 1491 } 1492 1493 void 1494 lpfc_mbx_cmpl_local_config_link(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 1495 { 1496 struct lpfc_vport *vport = pmb->vport; 1497 LPFC_MBOXQ_t *sparam_mb; 1498 u16 status = pmb->u.mb.mbxStatus; 1499 int rc; 1500 1501 mempool_free(pmb, phba->mbox_mem_pool); 1502 1503 if (status) 1504 goto out; 1505 1506 /* don't perform discovery for SLI4 loopback diagnostic test */ 1507 if ((phba->sli_rev == LPFC_SLI_REV4) && 1508 !test_bit(HBA_FCOE_MODE, &phba->hba_flag) && 1509 (phba->link_flag & LS_LOOPBACK_MODE)) 1510 return; 1511 1512 if (phba->fc_topology == LPFC_TOPOLOGY_LOOP && 1513 test_bit(FC_PUBLIC_LOOP, &vport->fc_flag) && 1514 !test_bit(FC_LBIT, &vport->fc_flag)) { 1515 /* Need to wait for FAN - use discovery timer 1516 * for timeout. port_state is identically 1517 * LPFC_LOCAL_CFG_LINK while waiting for FAN 1518 */ 1519 lpfc_set_disctmo(vport); 1520 return; 1521 } 1522 1523 /* Start discovery by sending a FLOGI. port_state is identically 1524 * LPFC_FLOGI while waiting for FLOGI cmpl. 1525 */ 1526 if (vport->port_state != LPFC_FLOGI) { 1527 /* Issue MBX_READ_SPARAM to update CSPs before FLOGI if 1528 * bb-credit recovery is in place. 1529 */ 1530 if (phba->bbcredit_support && phba->cfg_enable_bbcr && 1531 !(phba->link_flag & LS_LOOPBACK_MODE)) { 1532 sparam_mb = mempool_alloc(phba->mbox_mem_pool, 1533 GFP_KERNEL); 1534 if (!sparam_mb) 1535 goto sparam_out; 1536 1537 rc = lpfc_read_sparam(phba, sparam_mb, 0); 1538 if (rc) { 1539 mempool_free(sparam_mb, phba->mbox_mem_pool); 1540 goto sparam_out; 1541 } 1542 sparam_mb->vport = vport; 1543 sparam_mb->mbox_cmpl = lpfc_mbx_cmpl_read_sparam; 1544 rc = lpfc_sli_issue_mbox(phba, sparam_mb, MBX_NOWAIT); 1545 if (rc == MBX_NOT_FINISHED) { 1546 lpfc_mbox_rsrc_cleanup(phba, sparam_mb, 1547 MBOX_THD_UNLOCKED); 1548 goto sparam_out; 1549 } 1550 1551 set_bit(HBA_DEFER_FLOGI, &phba->hba_flag); 1552 } else { 1553 lpfc_initial_flogi(vport); 1554 } 1555 } else { 1556 if (test_bit(FC_PT2PT, &vport->fc_flag)) 1557 lpfc_disc_start(vport); 1558 } 1559 return; 1560 1561 out: 1562 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 1563 "0306 CONFIG_LINK mbxStatus error x%x HBA state x%x\n", 1564 status, vport->port_state); 1565 1566 sparam_out: 1567 lpfc_linkdown(phba); 1568 1569 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 1570 "0200 CONFIG_LINK bad hba state x%x\n", 1571 vport->port_state); 1572 1573 lpfc_issue_clear_la(phba, vport); 1574 return; 1575 } 1576 1577 /** 1578 * lpfc_sli4_clear_fcf_rr_bmask 1579 * @phba: pointer to the struct lpfc_hba for this port. 1580 * This fucnction resets the round robin bit mask and clears the 1581 * fcf priority list. The list deletions are done while holding the 1582 * hbalock. The ON_LIST flag and the FLOGI_FAILED flags are cleared 1583 * from the lpfc_fcf_pri record. 1584 **/ 1585 void 1586 lpfc_sli4_clear_fcf_rr_bmask(struct lpfc_hba *phba) 1587 { 1588 struct lpfc_fcf_pri *fcf_pri; 1589 struct lpfc_fcf_pri *next_fcf_pri; 1590 memset(phba->fcf.fcf_rr_bmask, 0, sizeof(*phba->fcf.fcf_rr_bmask)); 1591 spin_lock_irq(&phba->hbalock); 1592 list_for_each_entry_safe(fcf_pri, next_fcf_pri, 1593 &phba->fcf.fcf_pri_list, list) { 1594 list_del_init(&fcf_pri->list); 1595 fcf_pri->fcf_rec.flag = 0; 1596 } 1597 spin_unlock_irq(&phba->hbalock); 1598 } 1599 static void 1600 lpfc_mbx_cmpl_reg_fcfi(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq) 1601 { 1602 struct lpfc_vport *vport = mboxq->vport; 1603 1604 if (mboxq->u.mb.mbxStatus) { 1605 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 1606 "2017 REG_FCFI mbxStatus error x%x " 1607 "HBA state x%x\n", mboxq->u.mb.mbxStatus, 1608 vport->port_state); 1609 goto fail_out; 1610 } 1611 1612 /* Start FCoE discovery by sending a FLOGI. */ 1613 phba->fcf.fcfi = bf_get(lpfc_reg_fcfi_fcfi, &mboxq->u.mqe.un.reg_fcfi); 1614 /* Set the FCFI registered flag */ 1615 spin_lock_irq(&phba->hbalock); 1616 phba->fcf.fcf_flag |= FCF_REGISTERED; 1617 spin_unlock_irq(&phba->hbalock); 1618 1619 /* If there is a pending FCoE event, restart FCF table scan. */ 1620 if (!test_bit(FCF_RR_INPROG, &phba->hba_flag) && 1621 lpfc_check_pending_fcoe_event(phba, LPFC_UNREG_FCF)) 1622 goto fail_out; 1623 1624 /* Mark successful completion of FCF table scan */ 1625 spin_lock_irq(&phba->hbalock); 1626 phba->fcf.fcf_flag |= (FCF_SCAN_DONE | FCF_IN_USE); 1627 spin_unlock_irq(&phba->hbalock); 1628 clear_bit(FCF_TS_INPROG, &phba->hba_flag); 1629 if (vport->port_state != LPFC_FLOGI) { 1630 set_bit(FCF_RR_INPROG, &phba->hba_flag); 1631 lpfc_issue_init_vfi(vport); 1632 } 1633 goto out; 1634 1635 fail_out: 1636 clear_bit(FCF_RR_INPROG, &phba->hba_flag); 1637 out: 1638 mempool_free(mboxq, phba->mbox_mem_pool); 1639 } 1640 1641 /** 1642 * lpfc_fab_name_match - Check if the fcf fabric name match. 1643 * @fab_name: pointer to fabric name. 1644 * @new_fcf_record: pointer to fcf record. 1645 * 1646 * This routine compare the fcf record's fabric name with provided 1647 * fabric name. If the fabric name are identical this function 1648 * returns 1 else return 0. 1649 **/ 1650 static uint32_t 1651 lpfc_fab_name_match(uint8_t *fab_name, struct fcf_record *new_fcf_record) 1652 { 1653 if (fab_name[0] != bf_get(lpfc_fcf_record_fab_name_0, new_fcf_record)) 1654 return 0; 1655 if (fab_name[1] != bf_get(lpfc_fcf_record_fab_name_1, new_fcf_record)) 1656 return 0; 1657 if (fab_name[2] != bf_get(lpfc_fcf_record_fab_name_2, new_fcf_record)) 1658 return 0; 1659 if (fab_name[3] != bf_get(lpfc_fcf_record_fab_name_3, new_fcf_record)) 1660 return 0; 1661 if (fab_name[4] != bf_get(lpfc_fcf_record_fab_name_4, new_fcf_record)) 1662 return 0; 1663 if (fab_name[5] != bf_get(lpfc_fcf_record_fab_name_5, new_fcf_record)) 1664 return 0; 1665 if (fab_name[6] != bf_get(lpfc_fcf_record_fab_name_6, new_fcf_record)) 1666 return 0; 1667 if (fab_name[7] != bf_get(lpfc_fcf_record_fab_name_7, new_fcf_record)) 1668 return 0; 1669 return 1; 1670 } 1671 1672 /** 1673 * lpfc_sw_name_match - Check if the fcf switch name match. 1674 * @sw_name: pointer to switch name. 1675 * @new_fcf_record: pointer to fcf record. 1676 * 1677 * This routine compare the fcf record's switch name with provided 1678 * switch name. If the switch name are identical this function 1679 * returns 1 else return 0. 1680 **/ 1681 static uint32_t 1682 lpfc_sw_name_match(uint8_t *sw_name, struct fcf_record *new_fcf_record) 1683 { 1684 if (sw_name[0] != bf_get(lpfc_fcf_record_switch_name_0, new_fcf_record)) 1685 return 0; 1686 if (sw_name[1] != bf_get(lpfc_fcf_record_switch_name_1, new_fcf_record)) 1687 return 0; 1688 if (sw_name[2] != bf_get(lpfc_fcf_record_switch_name_2, new_fcf_record)) 1689 return 0; 1690 if (sw_name[3] != bf_get(lpfc_fcf_record_switch_name_3, new_fcf_record)) 1691 return 0; 1692 if (sw_name[4] != bf_get(lpfc_fcf_record_switch_name_4, new_fcf_record)) 1693 return 0; 1694 if (sw_name[5] != bf_get(lpfc_fcf_record_switch_name_5, new_fcf_record)) 1695 return 0; 1696 if (sw_name[6] != bf_get(lpfc_fcf_record_switch_name_6, new_fcf_record)) 1697 return 0; 1698 if (sw_name[7] != bf_get(lpfc_fcf_record_switch_name_7, new_fcf_record)) 1699 return 0; 1700 return 1; 1701 } 1702 1703 /** 1704 * lpfc_mac_addr_match - Check if the fcf mac address match. 1705 * @mac_addr: pointer to mac address. 1706 * @new_fcf_record: pointer to fcf record. 1707 * 1708 * This routine compare the fcf record's mac address with HBA's 1709 * FCF mac address. If the mac addresses are identical this function 1710 * returns 1 else return 0. 1711 **/ 1712 static uint32_t 1713 lpfc_mac_addr_match(uint8_t *mac_addr, struct fcf_record *new_fcf_record) 1714 { 1715 if (mac_addr[0] != bf_get(lpfc_fcf_record_mac_0, new_fcf_record)) 1716 return 0; 1717 if (mac_addr[1] != bf_get(lpfc_fcf_record_mac_1, new_fcf_record)) 1718 return 0; 1719 if (mac_addr[2] != bf_get(lpfc_fcf_record_mac_2, new_fcf_record)) 1720 return 0; 1721 if (mac_addr[3] != bf_get(lpfc_fcf_record_mac_3, new_fcf_record)) 1722 return 0; 1723 if (mac_addr[4] != bf_get(lpfc_fcf_record_mac_4, new_fcf_record)) 1724 return 0; 1725 if (mac_addr[5] != bf_get(lpfc_fcf_record_mac_5, new_fcf_record)) 1726 return 0; 1727 return 1; 1728 } 1729 1730 static bool 1731 lpfc_vlan_id_match(uint16_t curr_vlan_id, uint16_t new_vlan_id) 1732 { 1733 return (curr_vlan_id == new_vlan_id); 1734 } 1735 1736 /** 1737 * __lpfc_update_fcf_record_pri - update the lpfc_fcf_pri record. 1738 * @phba: pointer to lpfc hba data structure. 1739 * @fcf_index: Index for the lpfc_fcf_record. 1740 * @new_fcf_record: pointer to hba fcf record. 1741 * 1742 * This routine updates the driver FCF priority record from the new HBA FCF 1743 * record. The hbalock is asserted held in the code path calling this 1744 * routine. 1745 **/ 1746 static void 1747 __lpfc_update_fcf_record_pri(struct lpfc_hba *phba, uint16_t fcf_index, 1748 struct fcf_record *new_fcf_record 1749 ) 1750 { 1751 struct lpfc_fcf_pri *fcf_pri; 1752 1753 fcf_pri = &phba->fcf.fcf_pri[fcf_index]; 1754 fcf_pri->fcf_rec.fcf_index = fcf_index; 1755 /* FCF record priority */ 1756 fcf_pri->fcf_rec.priority = new_fcf_record->fip_priority; 1757 1758 } 1759 1760 /** 1761 * lpfc_copy_fcf_record - Copy fcf information to lpfc_hba. 1762 * @fcf_rec: pointer to driver fcf record. 1763 * @new_fcf_record: pointer to fcf record. 1764 * 1765 * This routine copies the FCF information from the FCF 1766 * record to lpfc_hba data structure. 1767 **/ 1768 static void 1769 lpfc_copy_fcf_record(struct lpfc_fcf_rec *fcf_rec, 1770 struct fcf_record *new_fcf_record) 1771 { 1772 /* Fabric name */ 1773 fcf_rec->fabric_name[0] = 1774 bf_get(lpfc_fcf_record_fab_name_0, new_fcf_record); 1775 fcf_rec->fabric_name[1] = 1776 bf_get(lpfc_fcf_record_fab_name_1, new_fcf_record); 1777 fcf_rec->fabric_name[2] = 1778 bf_get(lpfc_fcf_record_fab_name_2, new_fcf_record); 1779 fcf_rec->fabric_name[3] = 1780 bf_get(lpfc_fcf_record_fab_name_3, new_fcf_record); 1781 fcf_rec->fabric_name[4] = 1782 bf_get(lpfc_fcf_record_fab_name_4, new_fcf_record); 1783 fcf_rec->fabric_name[5] = 1784 bf_get(lpfc_fcf_record_fab_name_5, new_fcf_record); 1785 fcf_rec->fabric_name[6] = 1786 bf_get(lpfc_fcf_record_fab_name_6, new_fcf_record); 1787 fcf_rec->fabric_name[7] = 1788 bf_get(lpfc_fcf_record_fab_name_7, new_fcf_record); 1789 /* Mac address */ 1790 fcf_rec->mac_addr[0] = bf_get(lpfc_fcf_record_mac_0, new_fcf_record); 1791 fcf_rec->mac_addr[1] = bf_get(lpfc_fcf_record_mac_1, new_fcf_record); 1792 fcf_rec->mac_addr[2] = bf_get(lpfc_fcf_record_mac_2, new_fcf_record); 1793 fcf_rec->mac_addr[3] = bf_get(lpfc_fcf_record_mac_3, new_fcf_record); 1794 fcf_rec->mac_addr[4] = bf_get(lpfc_fcf_record_mac_4, new_fcf_record); 1795 fcf_rec->mac_addr[5] = bf_get(lpfc_fcf_record_mac_5, new_fcf_record); 1796 /* FCF record index */ 1797 fcf_rec->fcf_indx = bf_get(lpfc_fcf_record_fcf_index, new_fcf_record); 1798 /* FCF record priority */ 1799 fcf_rec->priority = new_fcf_record->fip_priority; 1800 /* Switch name */ 1801 fcf_rec->switch_name[0] = 1802 bf_get(lpfc_fcf_record_switch_name_0, new_fcf_record); 1803 fcf_rec->switch_name[1] = 1804 bf_get(lpfc_fcf_record_switch_name_1, new_fcf_record); 1805 fcf_rec->switch_name[2] = 1806 bf_get(lpfc_fcf_record_switch_name_2, new_fcf_record); 1807 fcf_rec->switch_name[3] = 1808 bf_get(lpfc_fcf_record_switch_name_3, new_fcf_record); 1809 fcf_rec->switch_name[4] = 1810 bf_get(lpfc_fcf_record_switch_name_4, new_fcf_record); 1811 fcf_rec->switch_name[5] = 1812 bf_get(lpfc_fcf_record_switch_name_5, new_fcf_record); 1813 fcf_rec->switch_name[6] = 1814 bf_get(lpfc_fcf_record_switch_name_6, new_fcf_record); 1815 fcf_rec->switch_name[7] = 1816 bf_get(lpfc_fcf_record_switch_name_7, new_fcf_record); 1817 } 1818 1819 /** 1820 * __lpfc_update_fcf_record - Update driver fcf record 1821 * @phba: pointer to lpfc hba data structure. 1822 * @fcf_rec: pointer to driver fcf record. 1823 * @new_fcf_record: pointer to hba fcf record. 1824 * @addr_mode: address mode to be set to the driver fcf record. 1825 * @vlan_id: vlan tag to be set to the driver fcf record. 1826 * @flag: flag bits to be set to the driver fcf record. 1827 * 1828 * This routine updates the driver FCF record from the new HBA FCF record 1829 * together with the address mode, vlan_id, and other informations. This 1830 * routine is called with the hbalock held. 1831 **/ 1832 static void 1833 __lpfc_update_fcf_record(struct lpfc_hba *phba, struct lpfc_fcf_rec *fcf_rec, 1834 struct fcf_record *new_fcf_record, uint32_t addr_mode, 1835 uint16_t vlan_id, uint32_t flag) 1836 { 1837 lockdep_assert_held(&phba->hbalock); 1838 1839 /* Copy the fields from the HBA's FCF record */ 1840 lpfc_copy_fcf_record(fcf_rec, new_fcf_record); 1841 /* Update other fields of driver FCF record */ 1842 fcf_rec->addr_mode = addr_mode; 1843 fcf_rec->vlan_id = vlan_id; 1844 fcf_rec->flag |= (flag | RECORD_VALID); 1845 __lpfc_update_fcf_record_pri(phba, 1846 bf_get(lpfc_fcf_record_fcf_index, new_fcf_record), 1847 new_fcf_record); 1848 } 1849 1850 /** 1851 * lpfc_register_fcf - Register the FCF with hba. 1852 * @phba: pointer to lpfc hba data structure. 1853 * 1854 * This routine issues a register fcfi mailbox command to register 1855 * the fcf with HBA. 1856 **/ 1857 static void 1858 lpfc_register_fcf(struct lpfc_hba *phba) 1859 { 1860 LPFC_MBOXQ_t *fcf_mbxq; 1861 int rc; 1862 1863 spin_lock_irq(&phba->hbalock); 1864 /* If the FCF is not available do nothing. */ 1865 if (!(phba->fcf.fcf_flag & FCF_AVAILABLE)) { 1866 spin_unlock_irq(&phba->hbalock); 1867 clear_bit(FCF_TS_INPROG, &phba->hba_flag); 1868 clear_bit(FCF_RR_INPROG, &phba->hba_flag); 1869 return; 1870 } 1871 1872 /* The FCF is already registered, start discovery */ 1873 if (phba->fcf.fcf_flag & FCF_REGISTERED) { 1874 phba->fcf.fcf_flag |= (FCF_SCAN_DONE | FCF_IN_USE); 1875 spin_unlock_irq(&phba->hbalock); 1876 clear_bit(FCF_TS_INPROG, &phba->hba_flag); 1877 if (phba->pport->port_state != LPFC_FLOGI && 1878 test_bit(FC_FABRIC, &phba->pport->fc_flag)) { 1879 set_bit(FCF_RR_INPROG, &phba->hba_flag); 1880 lpfc_initial_flogi(phba->pport); 1881 return; 1882 } 1883 return; 1884 } 1885 spin_unlock_irq(&phba->hbalock); 1886 1887 fcf_mbxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 1888 if (!fcf_mbxq) { 1889 clear_bit(FCF_TS_INPROG, &phba->hba_flag); 1890 clear_bit(FCF_RR_INPROG, &phba->hba_flag); 1891 return; 1892 } 1893 1894 lpfc_reg_fcfi(phba, fcf_mbxq); 1895 fcf_mbxq->vport = phba->pport; 1896 fcf_mbxq->mbox_cmpl = lpfc_mbx_cmpl_reg_fcfi; 1897 rc = lpfc_sli_issue_mbox(phba, fcf_mbxq, MBX_NOWAIT); 1898 if (rc == MBX_NOT_FINISHED) { 1899 clear_bit(FCF_TS_INPROG, &phba->hba_flag); 1900 clear_bit(FCF_RR_INPROG, &phba->hba_flag); 1901 mempool_free(fcf_mbxq, phba->mbox_mem_pool); 1902 } 1903 1904 return; 1905 } 1906 1907 /** 1908 * lpfc_match_fcf_conn_list - Check if the FCF record can be used for discovery. 1909 * @phba: pointer to lpfc hba data structure. 1910 * @new_fcf_record: pointer to fcf record. 1911 * @boot_flag: Indicates if this record used by boot bios. 1912 * @addr_mode: The address mode to be used by this FCF 1913 * @vlan_id: The vlan id to be used as vlan tagging by this FCF. 1914 * 1915 * This routine compare the fcf record with connect list obtained from the 1916 * config region to decide if this FCF can be used for SAN discovery. It returns 1917 * 1 if this record can be used for SAN discovery else return zero. If this FCF 1918 * record can be used for SAN discovery, the boot_flag will indicate if this FCF 1919 * is used by boot bios and addr_mode will indicate the addressing mode to be 1920 * used for this FCF when the function returns. 1921 * If the FCF record need to be used with a particular vlan id, the vlan is 1922 * set in the vlan_id on return of the function. If not VLAN tagging need to 1923 * be used with the FCF vlan_id will be set to LPFC_FCOE_NULL_VID; 1924 **/ 1925 static int 1926 lpfc_match_fcf_conn_list(struct lpfc_hba *phba, 1927 struct fcf_record *new_fcf_record, 1928 uint32_t *boot_flag, uint32_t *addr_mode, 1929 uint16_t *vlan_id) 1930 { 1931 struct lpfc_fcf_conn_entry *conn_entry; 1932 int i, j, fcf_vlan_id = 0; 1933 1934 /* Find the lowest VLAN id in the FCF record */ 1935 for (i = 0; i < 512; i++) { 1936 if (new_fcf_record->vlan_bitmap[i]) { 1937 fcf_vlan_id = i * 8; 1938 j = 0; 1939 while (!((new_fcf_record->vlan_bitmap[i] >> j) & 1)) { 1940 j++; 1941 fcf_vlan_id++; 1942 } 1943 break; 1944 } 1945 } 1946 1947 /* FCF not valid/available or solicitation in progress */ 1948 if (!bf_get(lpfc_fcf_record_fcf_avail, new_fcf_record) || 1949 !bf_get(lpfc_fcf_record_fcf_valid, new_fcf_record) || 1950 bf_get(lpfc_fcf_record_fcf_sol, new_fcf_record)) 1951 return 0; 1952 1953 if (!test_bit(HBA_FIP_SUPPORT, &phba->hba_flag)) { 1954 *boot_flag = 0; 1955 *addr_mode = bf_get(lpfc_fcf_record_mac_addr_prov, 1956 new_fcf_record); 1957 if (phba->valid_vlan) 1958 *vlan_id = phba->vlan_id; 1959 else 1960 *vlan_id = LPFC_FCOE_NULL_VID; 1961 return 1; 1962 } 1963 1964 /* 1965 * If there are no FCF connection table entry, driver connect to all 1966 * FCFs. 1967 */ 1968 if (list_empty(&phba->fcf_conn_rec_list)) { 1969 *boot_flag = 0; 1970 *addr_mode = bf_get(lpfc_fcf_record_mac_addr_prov, 1971 new_fcf_record); 1972 1973 /* 1974 * When there are no FCF connect entries, use driver's default 1975 * addressing mode - FPMA. 1976 */ 1977 if (*addr_mode & LPFC_FCF_FPMA) 1978 *addr_mode = LPFC_FCF_FPMA; 1979 1980 /* If FCF record report a vlan id use that vlan id */ 1981 if (fcf_vlan_id) 1982 *vlan_id = fcf_vlan_id; 1983 else 1984 *vlan_id = LPFC_FCOE_NULL_VID; 1985 return 1; 1986 } 1987 1988 list_for_each_entry(conn_entry, 1989 &phba->fcf_conn_rec_list, list) { 1990 if (!(conn_entry->conn_rec.flags & FCFCNCT_VALID)) 1991 continue; 1992 1993 if ((conn_entry->conn_rec.flags & FCFCNCT_FBNM_VALID) && 1994 !lpfc_fab_name_match(conn_entry->conn_rec.fabric_name, 1995 new_fcf_record)) 1996 continue; 1997 if ((conn_entry->conn_rec.flags & FCFCNCT_SWNM_VALID) && 1998 !lpfc_sw_name_match(conn_entry->conn_rec.switch_name, 1999 new_fcf_record)) 2000 continue; 2001 if (conn_entry->conn_rec.flags & FCFCNCT_VLAN_VALID) { 2002 /* 2003 * If the vlan bit map does not have the bit set for the 2004 * vlan id to be used, then it is not a match. 2005 */ 2006 if (!(new_fcf_record->vlan_bitmap 2007 [conn_entry->conn_rec.vlan_tag / 8] & 2008 (1 << (conn_entry->conn_rec.vlan_tag % 8)))) 2009 continue; 2010 } 2011 2012 /* 2013 * If connection record does not support any addressing mode, 2014 * skip the FCF record. 2015 */ 2016 if (!(bf_get(lpfc_fcf_record_mac_addr_prov, new_fcf_record) 2017 & (LPFC_FCF_FPMA | LPFC_FCF_SPMA))) 2018 continue; 2019 2020 /* 2021 * Check if the connection record specifies a required 2022 * addressing mode. 2023 */ 2024 if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) && 2025 !(conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED)) { 2026 2027 /* 2028 * If SPMA required but FCF not support this continue. 2029 */ 2030 if ((conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) && 2031 !(bf_get(lpfc_fcf_record_mac_addr_prov, 2032 new_fcf_record) & LPFC_FCF_SPMA)) 2033 continue; 2034 2035 /* 2036 * If FPMA required but FCF not support this continue. 2037 */ 2038 if (!(conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) && 2039 !(bf_get(lpfc_fcf_record_mac_addr_prov, 2040 new_fcf_record) & LPFC_FCF_FPMA)) 2041 continue; 2042 } 2043 2044 /* 2045 * This fcf record matches filtering criteria. 2046 */ 2047 if (conn_entry->conn_rec.flags & FCFCNCT_BOOT) 2048 *boot_flag = 1; 2049 else 2050 *boot_flag = 0; 2051 2052 /* 2053 * If user did not specify any addressing mode, or if the 2054 * preferred addressing mode specified by user is not supported 2055 * by FCF, allow fabric to pick the addressing mode. 2056 */ 2057 *addr_mode = bf_get(lpfc_fcf_record_mac_addr_prov, 2058 new_fcf_record); 2059 /* 2060 * If the user specified a required address mode, assign that 2061 * address mode 2062 */ 2063 if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) && 2064 (!(conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED))) 2065 *addr_mode = (conn_entry->conn_rec.flags & 2066 FCFCNCT_AM_SPMA) ? 2067 LPFC_FCF_SPMA : LPFC_FCF_FPMA; 2068 /* 2069 * If the user specified a preferred address mode, use the 2070 * addr mode only if FCF support the addr_mode. 2071 */ 2072 else if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) && 2073 (conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED) && 2074 (conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) && 2075 (*addr_mode & LPFC_FCF_SPMA)) 2076 *addr_mode = LPFC_FCF_SPMA; 2077 else if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) && 2078 (conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED) && 2079 !(conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) && 2080 (*addr_mode & LPFC_FCF_FPMA)) 2081 *addr_mode = LPFC_FCF_FPMA; 2082 2083 /* If matching connect list has a vlan id, use it */ 2084 if (conn_entry->conn_rec.flags & FCFCNCT_VLAN_VALID) 2085 *vlan_id = conn_entry->conn_rec.vlan_tag; 2086 /* 2087 * If no vlan id is specified in connect list, use the vlan id 2088 * in the FCF record 2089 */ 2090 else if (fcf_vlan_id) 2091 *vlan_id = fcf_vlan_id; 2092 else 2093 *vlan_id = LPFC_FCOE_NULL_VID; 2094 2095 return 1; 2096 } 2097 2098 return 0; 2099 } 2100 2101 /** 2102 * lpfc_check_pending_fcoe_event - Check if there is pending fcoe event. 2103 * @phba: pointer to lpfc hba data structure. 2104 * @unreg_fcf: Unregister FCF if FCF table need to be re-scaned. 2105 * 2106 * This function check if there is any fcoe event pending while driver 2107 * scan FCF entries. If there is any pending event, it will restart the 2108 * FCF saning and return 1 else return 0. 2109 */ 2110 int 2111 lpfc_check_pending_fcoe_event(struct lpfc_hba *phba, uint8_t unreg_fcf) 2112 { 2113 /* 2114 * If the Link is up and no FCoE events while in the 2115 * FCF discovery, no need to restart FCF discovery. 2116 */ 2117 if ((phba->link_state >= LPFC_LINK_UP) && 2118 (phba->fcoe_eventtag == phba->fcoe_eventtag_at_fcf_scan)) 2119 return 0; 2120 2121 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2122 "2768 Pending link or FCF event during current " 2123 "handling of the previous event: link_state:x%x, " 2124 "evt_tag_at_scan:x%x, evt_tag_current:x%x\n", 2125 phba->link_state, phba->fcoe_eventtag_at_fcf_scan, 2126 phba->fcoe_eventtag); 2127 2128 spin_lock_irq(&phba->hbalock); 2129 phba->fcf.fcf_flag &= ~FCF_AVAILABLE; 2130 spin_unlock_irq(&phba->hbalock); 2131 2132 if (phba->link_state >= LPFC_LINK_UP) { 2133 lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY, 2134 "2780 Restart FCF table scan due to " 2135 "pending FCF event:evt_tag_at_scan:x%x, " 2136 "evt_tag_current:x%x\n", 2137 phba->fcoe_eventtag_at_fcf_scan, 2138 phba->fcoe_eventtag); 2139 lpfc_sli4_fcf_scan_read_fcf_rec(phba, LPFC_FCOE_FCF_GET_FIRST); 2140 } else { 2141 /* 2142 * Do not continue FCF discovery and clear FCF_TS_INPROG 2143 * flag 2144 */ 2145 lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY, 2146 "2833 Stop FCF discovery process due to link " 2147 "state change (x%x)\n", phba->link_state); 2148 clear_bit(FCF_TS_INPROG, &phba->hba_flag); 2149 clear_bit(FCF_RR_INPROG, &phba->hba_flag); 2150 spin_lock_irq(&phba->hbalock); 2151 phba->fcf.fcf_flag &= ~(FCF_REDISC_FOV | FCF_DISCOVERY); 2152 spin_unlock_irq(&phba->hbalock); 2153 } 2154 2155 /* Unregister the currently registered FCF if required */ 2156 if (unreg_fcf) { 2157 spin_lock_irq(&phba->hbalock); 2158 phba->fcf.fcf_flag &= ~FCF_REGISTERED; 2159 spin_unlock_irq(&phba->hbalock); 2160 lpfc_sli4_unregister_fcf(phba); 2161 } 2162 return 1; 2163 } 2164 2165 /** 2166 * lpfc_sli4_new_fcf_random_select - Randomly select an eligible new fcf record 2167 * @phba: pointer to lpfc hba data structure. 2168 * @fcf_cnt: number of eligible fcf record seen so far. 2169 * 2170 * This function makes an running random selection decision on FCF record to 2171 * use through a sequence of @fcf_cnt eligible FCF records with equal 2172 * probability. To perform integer manunipulation of random numbers with 2173 * size unit32_t, a 16-bit random number returned from get_random_u16() is 2174 * taken as the random random number generated. 2175 * 2176 * Returns true when outcome is for the newly read FCF record should be 2177 * chosen; otherwise, return false when outcome is for keeping the previously 2178 * chosen FCF record. 2179 **/ 2180 static bool 2181 lpfc_sli4_new_fcf_random_select(struct lpfc_hba *phba, uint32_t fcf_cnt) 2182 { 2183 uint32_t rand_num; 2184 2185 /* Get 16-bit uniform random number */ 2186 rand_num = get_random_u16(); 2187 2188 /* Decision with probability 1/fcf_cnt */ 2189 if ((fcf_cnt * rand_num) < 0xFFFF) 2190 return true; 2191 else 2192 return false; 2193 } 2194 2195 /** 2196 * lpfc_sli4_fcf_rec_mbox_parse - Parse read_fcf mbox command. 2197 * @phba: pointer to lpfc hba data structure. 2198 * @mboxq: pointer to mailbox object. 2199 * @next_fcf_index: pointer to holder of next fcf index. 2200 * 2201 * This routine parses the non-embedded fcf mailbox command by performing the 2202 * necessarily error checking, non-embedded read FCF record mailbox command 2203 * SGE parsing, and endianness swapping. 2204 * 2205 * Returns the pointer to the new FCF record in the non-embedded mailbox 2206 * command DMA memory if successfully, other NULL. 2207 */ 2208 static struct fcf_record * 2209 lpfc_sli4_fcf_rec_mbox_parse(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq, 2210 uint16_t *next_fcf_index) 2211 { 2212 void *virt_addr; 2213 struct lpfc_mbx_sge sge; 2214 struct lpfc_mbx_read_fcf_tbl *read_fcf; 2215 uint32_t shdr_status, shdr_add_status, if_type; 2216 union lpfc_sli4_cfg_shdr *shdr; 2217 struct fcf_record *new_fcf_record; 2218 2219 /* Get the first SGE entry from the non-embedded DMA memory. This 2220 * routine only uses a single SGE. 2221 */ 2222 lpfc_sli4_mbx_sge_get(mboxq, 0, &sge); 2223 if (unlikely(!mboxq->sge_array)) { 2224 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 2225 "2524 Failed to get the non-embedded SGE " 2226 "virtual address\n"); 2227 return NULL; 2228 } 2229 virt_addr = mboxq->sge_array->addr[0]; 2230 2231 shdr = (union lpfc_sli4_cfg_shdr *)virt_addr; 2232 lpfc_sli_pcimem_bcopy(shdr, shdr, 2233 sizeof(union lpfc_sli4_cfg_shdr)); 2234 shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response); 2235 if_type = bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf); 2236 shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response); 2237 if (shdr_status || shdr_add_status) { 2238 if (shdr_status == STATUS_FCF_TABLE_EMPTY || 2239 if_type == LPFC_SLI_INTF_IF_TYPE_2) 2240 lpfc_printf_log(phba, KERN_ERR, 2241 LOG_TRACE_EVENT, 2242 "2726 READ_FCF_RECORD Indicates empty " 2243 "FCF table.\n"); 2244 else 2245 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 2246 "2521 READ_FCF_RECORD mailbox failed " 2247 "with status x%x add_status x%x, " 2248 "mbx\n", shdr_status, shdr_add_status); 2249 return NULL; 2250 } 2251 2252 /* Interpreting the returned information of the FCF record */ 2253 read_fcf = (struct lpfc_mbx_read_fcf_tbl *)virt_addr; 2254 lpfc_sli_pcimem_bcopy(read_fcf, read_fcf, 2255 sizeof(struct lpfc_mbx_read_fcf_tbl)); 2256 *next_fcf_index = bf_get(lpfc_mbx_read_fcf_tbl_nxt_vindx, read_fcf); 2257 new_fcf_record = (struct fcf_record *)(virt_addr + 2258 sizeof(struct lpfc_mbx_read_fcf_tbl)); 2259 lpfc_sli_pcimem_bcopy(new_fcf_record, new_fcf_record, 2260 offsetof(struct fcf_record, vlan_bitmap)); 2261 new_fcf_record->word137 = le32_to_cpu(new_fcf_record->word137); 2262 new_fcf_record->word138 = le32_to_cpu(new_fcf_record->word138); 2263 2264 return new_fcf_record; 2265 } 2266 2267 /** 2268 * lpfc_sli4_log_fcf_record_info - Log the information of a fcf record 2269 * @phba: pointer to lpfc hba data structure. 2270 * @fcf_record: pointer to the fcf record. 2271 * @vlan_id: the lowest vlan identifier associated to this fcf record. 2272 * @next_fcf_index: the index to the next fcf record in hba's fcf table. 2273 * 2274 * This routine logs the detailed FCF record if the LOG_FIP loggin is 2275 * enabled. 2276 **/ 2277 static void 2278 lpfc_sli4_log_fcf_record_info(struct lpfc_hba *phba, 2279 struct fcf_record *fcf_record, 2280 uint16_t vlan_id, 2281 uint16_t next_fcf_index) 2282 { 2283 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2284 "2764 READ_FCF_RECORD:\n" 2285 "\tFCF_Index : x%x\n" 2286 "\tFCF_Avail : x%x\n" 2287 "\tFCF_Valid : x%x\n" 2288 "\tFCF_SOL : x%x\n" 2289 "\tFIP_Priority : x%x\n" 2290 "\tMAC_Provider : x%x\n" 2291 "\tLowest VLANID : x%x\n" 2292 "\tFCF_MAC Addr : x%x:%x:%x:%x:%x:%x\n" 2293 "\tFabric_Name : x%x:%x:%x:%x:%x:%x:%x:%x\n" 2294 "\tSwitch_Name : x%x:%x:%x:%x:%x:%x:%x:%x\n" 2295 "\tNext_FCF_Index: x%x\n", 2296 bf_get(lpfc_fcf_record_fcf_index, fcf_record), 2297 bf_get(lpfc_fcf_record_fcf_avail, fcf_record), 2298 bf_get(lpfc_fcf_record_fcf_valid, fcf_record), 2299 bf_get(lpfc_fcf_record_fcf_sol, fcf_record), 2300 fcf_record->fip_priority, 2301 bf_get(lpfc_fcf_record_mac_addr_prov, fcf_record), 2302 vlan_id, 2303 bf_get(lpfc_fcf_record_mac_0, fcf_record), 2304 bf_get(lpfc_fcf_record_mac_1, fcf_record), 2305 bf_get(lpfc_fcf_record_mac_2, fcf_record), 2306 bf_get(lpfc_fcf_record_mac_3, fcf_record), 2307 bf_get(lpfc_fcf_record_mac_4, fcf_record), 2308 bf_get(lpfc_fcf_record_mac_5, fcf_record), 2309 bf_get(lpfc_fcf_record_fab_name_0, fcf_record), 2310 bf_get(lpfc_fcf_record_fab_name_1, fcf_record), 2311 bf_get(lpfc_fcf_record_fab_name_2, fcf_record), 2312 bf_get(lpfc_fcf_record_fab_name_3, fcf_record), 2313 bf_get(lpfc_fcf_record_fab_name_4, fcf_record), 2314 bf_get(lpfc_fcf_record_fab_name_5, fcf_record), 2315 bf_get(lpfc_fcf_record_fab_name_6, fcf_record), 2316 bf_get(lpfc_fcf_record_fab_name_7, fcf_record), 2317 bf_get(lpfc_fcf_record_switch_name_0, fcf_record), 2318 bf_get(lpfc_fcf_record_switch_name_1, fcf_record), 2319 bf_get(lpfc_fcf_record_switch_name_2, fcf_record), 2320 bf_get(lpfc_fcf_record_switch_name_3, fcf_record), 2321 bf_get(lpfc_fcf_record_switch_name_4, fcf_record), 2322 bf_get(lpfc_fcf_record_switch_name_5, fcf_record), 2323 bf_get(lpfc_fcf_record_switch_name_6, fcf_record), 2324 bf_get(lpfc_fcf_record_switch_name_7, fcf_record), 2325 next_fcf_index); 2326 } 2327 2328 /** 2329 * lpfc_sli4_fcf_record_match - testing new FCF record for matching existing FCF 2330 * @phba: pointer to lpfc hba data structure. 2331 * @fcf_rec: pointer to an existing FCF record. 2332 * @new_fcf_record: pointer to a new FCF record. 2333 * @new_vlan_id: vlan id from the new FCF record. 2334 * 2335 * This function performs matching test of a new FCF record against an existing 2336 * FCF record. If the new_vlan_id passed in is LPFC_FCOE_IGNORE_VID, vlan id 2337 * will not be used as part of the FCF record matching criteria. 2338 * 2339 * Returns true if all the fields matching, otherwise returns false. 2340 */ 2341 static bool 2342 lpfc_sli4_fcf_record_match(struct lpfc_hba *phba, 2343 struct lpfc_fcf_rec *fcf_rec, 2344 struct fcf_record *new_fcf_record, 2345 uint16_t new_vlan_id) 2346 { 2347 if (new_vlan_id != LPFC_FCOE_IGNORE_VID) 2348 if (!lpfc_vlan_id_match(fcf_rec->vlan_id, new_vlan_id)) 2349 return false; 2350 if (!lpfc_mac_addr_match(fcf_rec->mac_addr, new_fcf_record)) 2351 return false; 2352 if (!lpfc_sw_name_match(fcf_rec->switch_name, new_fcf_record)) 2353 return false; 2354 if (!lpfc_fab_name_match(fcf_rec->fabric_name, new_fcf_record)) 2355 return false; 2356 if (fcf_rec->priority != new_fcf_record->fip_priority) 2357 return false; 2358 return true; 2359 } 2360 2361 /** 2362 * lpfc_sli4_fcf_rr_next_proc - processing next roundrobin fcf 2363 * @vport: Pointer to vport object. 2364 * @fcf_index: index to next fcf. 2365 * 2366 * This function processing the roundrobin fcf failover to next fcf index. 2367 * When this function is invoked, there will be a current fcf registered 2368 * for flogi. 2369 * Return: 0 for continue retrying flogi on currently registered fcf; 2370 * 1 for stop flogi on currently registered fcf; 2371 */ 2372 int lpfc_sli4_fcf_rr_next_proc(struct lpfc_vport *vport, uint16_t fcf_index) 2373 { 2374 struct lpfc_hba *phba = vport->phba; 2375 int rc; 2376 2377 if (fcf_index == LPFC_FCOE_FCF_NEXT_NONE) { 2378 if (test_bit(HBA_DEVLOSS_TMO, &phba->hba_flag)) { 2379 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2380 "2872 Devloss tmo with no eligible " 2381 "FCF, unregister in-use FCF (x%x) " 2382 "and rescan FCF table\n", 2383 phba->fcf.current_rec.fcf_indx); 2384 lpfc_unregister_fcf_rescan(phba); 2385 goto stop_flogi_current_fcf; 2386 } 2387 /* Mark the end to FLOGI roundrobin failover */ 2388 clear_bit(FCF_RR_INPROG, &phba->hba_flag); 2389 /* Allow action to new fcf asynchronous event */ 2390 spin_lock_irq(&phba->hbalock); 2391 phba->fcf.fcf_flag &= ~(FCF_AVAILABLE | FCF_SCAN_DONE); 2392 spin_unlock_irq(&phba->hbalock); 2393 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2394 "2865 No FCF available, stop roundrobin FCF " 2395 "failover and change port state:x%x/x%x\n", 2396 phba->pport->port_state, LPFC_VPORT_UNKNOWN); 2397 phba->pport->port_state = LPFC_VPORT_UNKNOWN; 2398 2399 if (!phba->fcf.fcf_redisc_attempted) { 2400 lpfc_unregister_fcf(phba); 2401 2402 rc = lpfc_sli4_redisc_fcf_table(phba); 2403 if (!rc) { 2404 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2405 "3195 Rediscover FCF table\n"); 2406 phba->fcf.fcf_redisc_attempted = 1; 2407 lpfc_sli4_clear_fcf_rr_bmask(phba); 2408 } else { 2409 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP, 2410 "3196 Rediscover FCF table " 2411 "failed. Status:x%x\n", rc); 2412 } 2413 } else { 2414 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP, 2415 "3197 Already rediscover FCF table " 2416 "attempted. No more retry\n"); 2417 } 2418 goto stop_flogi_current_fcf; 2419 } else { 2420 lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_ELS, 2421 "2794 Try FLOGI roundrobin FCF failover to " 2422 "(x%x)\n", fcf_index); 2423 rc = lpfc_sli4_fcf_rr_read_fcf_rec(phba, fcf_index); 2424 if (rc) 2425 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP | LOG_ELS, 2426 "2761 FLOGI roundrobin FCF failover " 2427 "failed (rc:x%x) to read FCF (x%x)\n", 2428 rc, phba->fcf.current_rec.fcf_indx); 2429 else 2430 goto stop_flogi_current_fcf; 2431 } 2432 return 0; 2433 2434 stop_flogi_current_fcf: 2435 lpfc_can_disctmo(vport); 2436 return 1; 2437 } 2438 2439 /** 2440 * lpfc_sli4_fcf_pri_list_del 2441 * @phba: pointer to lpfc hba data structure. 2442 * @fcf_index: the index of the fcf record to delete 2443 * This routine checks the on list flag of the fcf_index to be deleted. 2444 * If it is one the list then it is removed from the list, and the flag 2445 * is cleared. This routine grab the hbalock before removing the fcf 2446 * record from the list. 2447 **/ 2448 static void lpfc_sli4_fcf_pri_list_del(struct lpfc_hba *phba, 2449 uint16_t fcf_index) 2450 { 2451 struct lpfc_fcf_pri *new_fcf_pri; 2452 2453 new_fcf_pri = &phba->fcf.fcf_pri[fcf_index]; 2454 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2455 "3058 deleting idx x%x pri x%x flg x%x\n", 2456 fcf_index, new_fcf_pri->fcf_rec.priority, 2457 new_fcf_pri->fcf_rec.flag); 2458 spin_lock_irq(&phba->hbalock); 2459 if (new_fcf_pri->fcf_rec.flag & LPFC_FCF_ON_PRI_LIST) { 2460 if (phba->fcf.current_rec.priority == 2461 new_fcf_pri->fcf_rec.priority) 2462 phba->fcf.eligible_fcf_cnt--; 2463 list_del_init(&new_fcf_pri->list); 2464 new_fcf_pri->fcf_rec.flag &= ~LPFC_FCF_ON_PRI_LIST; 2465 } 2466 spin_unlock_irq(&phba->hbalock); 2467 } 2468 2469 /** 2470 * lpfc_sli4_set_fcf_flogi_fail 2471 * @phba: pointer to lpfc hba data structure. 2472 * @fcf_index: the index of the fcf record to update 2473 * This routine acquires the hbalock and then set the LPFC_FCF_FLOGI_FAILED 2474 * flag so the round robin selection for the particular priority level 2475 * will try a different fcf record that does not have this bit set. 2476 * If the fcf record is re-read for any reason this flag is cleared brfore 2477 * adding it to the priority list. 2478 **/ 2479 void 2480 lpfc_sli4_set_fcf_flogi_fail(struct lpfc_hba *phba, uint16_t fcf_index) 2481 { 2482 struct lpfc_fcf_pri *new_fcf_pri; 2483 new_fcf_pri = &phba->fcf.fcf_pri[fcf_index]; 2484 spin_lock_irq(&phba->hbalock); 2485 new_fcf_pri->fcf_rec.flag |= LPFC_FCF_FLOGI_FAILED; 2486 spin_unlock_irq(&phba->hbalock); 2487 } 2488 2489 /** 2490 * lpfc_sli4_fcf_pri_list_add 2491 * @phba: pointer to lpfc hba data structure. 2492 * @fcf_index: the index of the fcf record to add 2493 * @new_fcf_record: pointer to a new FCF record. 2494 * This routine checks the priority of the fcf_index to be added. 2495 * If it is a lower priority than the current head of the fcf_pri list 2496 * then it is added to the list in the right order. 2497 * If it is the same priority as the current head of the list then it 2498 * is added to the head of the list and its bit in the rr_bmask is set. 2499 * If the fcf_index to be added is of a higher priority than the current 2500 * head of the list then the rr_bmask is cleared, its bit is set in the 2501 * rr_bmask and it is added to the head of the list. 2502 * returns: 2503 * 0=success 1=failure 2504 **/ 2505 static int lpfc_sli4_fcf_pri_list_add(struct lpfc_hba *phba, 2506 uint16_t fcf_index, 2507 struct fcf_record *new_fcf_record) 2508 { 2509 uint16_t current_fcf_pri; 2510 uint16_t last_index; 2511 struct lpfc_fcf_pri *fcf_pri; 2512 struct lpfc_fcf_pri *next_fcf_pri; 2513 struct lpfc_fcf_pri *new_fcf_pri; 2514 int ret; 2515 2516 new_fcf_pri = &phba->fcf.fcf_pri[fcf_index]; 2517 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2518 "3059 adding idx x%x pri x%x flg x%x\n", 2519 fcf_index, new_fcf_record->fip_priority, 2520 new_fcf_pri->fcf_rec.flag); 2521 spin_lock_irq(&phba->hbalock); 2522 if (new_fcf_pri->fcf_rec.flag & LPFC_FCF_ON_PRI_LIST) 2523 list_del_init(&new_fcf_pri->list); 2524 new_fcf_pri->fcf_rec.fcf_index = fcf_index; 2525 new_fcf_pri->fcf_rec.priority = new_fcf_record->fip_priority; 2526 if (list_empty(&phba->fcf.fcf_pri_list)) { 2527 list_add(&new_fcf_pri->list, &phba->fcf.fcf_pri_list); 2528 ret = lpfc_sli4_fcf_rr_index_set(phba, 2529 new_fcf_pri->fcf_rec.fcf_index); 2530 goto out; 2531 } 2532 2533 last_index = find_first_bit(phba->fcf.fcf_rr_bmask, 2534 LPFC_SLI4_FCF_TBL_INDX_MAX); 2535 if (last_index >= LPFC_SLI4_FCF_TBL_INDX_MAX) { 2536 ret = 0; /* Empty rr list */ 2537 goto out; 2538 } 2539 current_fcf_pri = phba->fcf.fcf_pri[last_index].fcf_rec.priority; 2540 if (new_fcf_pri->fcf_rec.priority <= current_fcf_pri) { 2541 list_add(&new_fcf_pri->list, &phba->fcf.fcf_pri_list); 2542 if (new_fcf_pri->fcf_rec.priority < current_fcf_pri) { 2543 memset(phba->fcf.fcf_rr_bmask, 0, 2544 sizeof(*phba->fcf.fcf_rr_bmask)); 2545 /* fcfs_at_this_priority_level = 1; */ 2546 phba->fcf.eligible_fcf_cnt = 1; 2547 } else 2548 /* fcfs_at_this_priority_level++; */ 2549 phba->fcf.eligible_fcf_cnt++; 2550 ret = lpfc_sli4_fcf_rr_index_set(phba, 2551 new_fcf_pri->fcf_rec.fcf_index); 2552 goto out; 2553 } 2554 2555 list_for_each_entry_safe(fcf_pri, next_fcf_pri, 2556 &phba->fcf.fcf_pri_list, list) { 2557 if (new_fcf_pri->fcf_rec.priority <= 2558 fcf_pri->fcf_rec.priority) { 2559 if (fcf_pri->list.prev == &phba->fcf.fcf_pri_list) 2560 list_add(&new_fcf_pri->list, 2561 &phba->fcf.fcf_pri_list); 2562 else 2563 list_add(&new_fcf_pri->list, 2564 &((struct lpfc_fcf_pri *) 2565 fcf_pri->list.prev)->list); 2566 ret = 0; 2567 goto out; 2568 } else if (fcf_pri->list.next == &phba->fcf.fcf_pri_list 2569 || new_fcf_pri->fcf_rec.priority < 2570 next_fcf_pri->fcf_rec.priority) { 2571 list_add(&new_fcf_pri->list, &fcf_pri->list); 2572 ret = 0; 2573 goto out; 2574 } 2575 if (new_fcf_pri->fcf_rec.priority > fcf_pri->fcf_rec.priority) 2576 continue; 2577 2578 } 2579 ret = 1; 2580 out: 2581 /* we use = instead of |= to clear the FLOGI_FAILED flag. */ 2582 new_fcf_pri->fcf_rec.flag = LPFC_FCF_ON_PRI_LIST; 2583 spin_unlock_irq(&phba->hbalock); 2584 return ret; 2585 } 2586 2587 /** 2588 * lpfc_mbx_cmpl_fcf_scan_read_fcf_rec - fcf scan read_fcf mbox cmpl handler. 2589 * @phba: pointer to lpfc hba data structure. 2590 * @mboxq: pointer to mailbox object. 2591 * 2592 * This function iterates through all the fcf records available in 2593 * HBA and chooses the optimal FCF record for discovery. After finding 2594 * the FCF for discovery it registers the FCF record and kicks start 2595 * discovery. 2596 * If FCF_IN_USE flag is set in currently used FCF, the routine tries to 2597 * use an FCF record which matches fabric name and mac address of the 2598 * currently used FCF record. 2599 * If the driver supports only one FCF, it will try to use the FCF record 2600 * used by BOOT_BIOS. 2601 */ 2602 void 2603 lpfc_mbx_cmpl_fcf_scan_read_fcf_rec(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq) 2604 { 2605 struct fcf_record *new_fcf_record; 2606 uint32_t boot_flag, addr_mode; 2607 uint16_t fcf_index, next_fcf_index; 2608 struct lpfc_fcf_rec *fcf_rec = NULL; 2609 uint16_t vlan_id = LPFC_FCOE_NULL_VID; 2610 bool select_new_fcf; 2611 int rc; 2612 2613 /* If there is pending FCoE event restart FCF table scan */ 2614 if (lpfc_check_pending_fcoe_event(phba, LPFC_SKIP_UNREG_FCF)) { 2615 lpfc_sli4_mbox_cmd_free(phba, mboxq); 2616 return; 2617 } 2618 2619 /* Parse the FCF record from the non-embedded mailbox command */ 2620 new_fcf_record = lpfc_sli4_fcf_rec_mbox_parse(phba, mboxq, 2621 &next_fcf_index); 2622 if (!new_fcf_record) { 2623 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 2624 "2765 Mailbox command READ_FCF_RECORD " 2625 "failed to retrieve a FCF record.\n"); 2626 /* Let next new FCF event trigger fast failover */ 2627 clear_bit(FCF_TS_INPROG, &phba->hba_flag); 2628 lpfc_sli4_mbox_cmd_free(phba, mboxq); 2629 return; 2630 } 2631 2632 /* Check the FCF record against the connection list */ 2633 rc = lpfc_match_fcf_conn_list(phba, new_fcf_record, &boot_flag, 2634 &addr_mode, &vlan_id); 2635 2636 /* Log the FCF record information if turned on */ 2637 lpfc_sli4_log_fcf_record_info(phba, new_fcf_record, vlan_id, 2638 next_fcf_index); 2639 2640 /* 2641 * If the fcf record does not match with connect list entries 2642 * read the next entry; otherwise, this is an eligible FCF 2643 * record for roundrobin FCF failover. 2644 */ 2645 if (!rc) { 2646 lpfc_sli4_fcf_pri_list_del(phba, 2647 bf_get(lpfc_fcf_record_fcf_index, 2648 new_fcf_record)); 2649 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP, 2650 "2781 FCF (x%x) failed connection " 2651 "list check: (x%x/x%x/%x)\n", 2652 bf_get(lpfc_fcf_record_fcf_index, 2653 new_fcf_record), 2654 bf_get(lpfc_fcf_record_fcf_avail, 2655 new_fcf_record), 2656 bf_get(lpfc_fcf_record_fcf_valid, 2657 new_fcf_record), 2658 bf_get(lpfc_fcf_record_fcf_sol, 2659 new_fcf_record)); 2660 if ((phba->fcf.fcf_flag & FCF_IN_USE) && 2661 lpfc_sli4_fcf_record_match(phba, &phba->fcf.current_rec, 2662 new_fcf_record, LPFC_FCOE_IGNORE_VID)) { 2663 if (bf_get(lpfc_fcf_record_fcf_index, new_fcf_record) != 2664 phba->fcf.current_rec.fcf_indx) { 2665 lpfc_printf_log(phba, KERN_ERR, 2666 LOG_TRACE_EVENT, 2667 "2862 FCF (x%x) matches property " 2668 "of in-use FCF (x%x)\n", 2669 bf_get(lpfc_fcf_record_fcf_index, 2670 new_fcf_record), 2671 phba->fcf.current_rec.fcf_indx); 2672 goto read_next_fcf; 2673 } 2674 /* 2675 * In case the current in-use FCF record becomes 2676 * invalid/unavailable during FCF discovery that 2677 * was not triggered by fast FCF failover process, 2678 * treat it as fast FCF failover. 2679 */ 2680 if (!(phba->fcf.fcf_flag & FCF_REDISC_PEND) && 2681 !(phba->fcf.fcf_flag & FCF_REDISC_FOV)) { 2682 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP, 2683 "2835 Invalid in-use FCF " 2684 "(x%x), enter FCF failover " 2685 "table scan.\n", 2686 phba->fcf.current_rec.fcf_indx); 2687 spin_lock_irq(&phba->hbalock); 2688 phba->fcf.fcf_flag |= FCF_REDISC_FOV; 2689 spin_unlock_irq(&phba->hbalock); 2690 lpfc_sli4_mbox_cmd_free(phba, mboxq); 2691 lpfc_sli4_fcf_scan_read_fcf_rec(phba, 2692 LPFC_FCOE_FCF_GET_FIRST); 2693 return; 2694 } 2695 } 2696 goto read_next_fcf; 2697 } else { 2698 fcf_index = bf_get(lpfc_fcf_record_fcf_index, new_fcf_record); 2699 rc = lpfc_sli4_fcf_pri_list_add(phba, fcf_index, 2700 new_fcf_record); 2701 if (rc) 2702 goto read_next_fcf; 2703 } 2704 2705 /* 2706 * If this is not the first FCF discovery of the HBA, use last 2707 * FCF record for the discovery. The condition that a rescan 2708 * matches the in-use FCF record: fabric name, switch name, mac 2709 * address, and vlan_id. 2710 */ 2711 spin_lock_irq(&phba->hbalock); 2712 if (phba->fcf.fcf_flag & FCF_IN_USE) { 2713 if (phba->cfg_fcf_failover_policy == LPFC_FCF_FOV && 2714 lpfc_sli4_fcf_record_match(phba, &phba->fcf.current_rec, 2715 new_fcf_record, vlan_id)) { 2716 if (bf_get(lpfc_fcf_record_fcf_index, new_fcf_record) == 2717 phba->fcf.current_rec.fcf_indx) { 2718 phba->fcf.fcf_flag |= FCF_AVAILABLE; 2719 if (phba->fcf.fcf_flag & FCF_REDISC_PEND) 2720 /* Stop FCF redisc wait timer */ 2721 __lpfc_sli4_stop_fcf_redisc_wait_timer( 2722 phba); 2723 else if (phba->fcf.fcf_flag & FCF_REDISC_FOV) 2724 /* Fast failover, mark completed */ 2725 phba->fcf.fcf_flag &= ~FCF_REDISC_FOV; 2726 spin_unlock_irq(&phba->hbalock); 2727 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2728 "2836 New FCF matches in-use " 2729 "FCF (x%x), port_state:x%x, " 2730 "fc_flag:x%lx\n", 2731 phba->fcf.current_rec.fcf_indx, 2732 phba->pport->port_state, 2733 phba->pport->fc_flag); 2734 goto out; 2735 } else 2736 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 2737 "2863 New FCF (x%x) matches " 2738 "property of in-use FCF (x%x)\n", 2739 bf_get(lpfc_fcf_record_fcf_index, 2740 new_fcf_record), 2741 phba->fcf.current_rec.fcf_indx); 2742 } 2743 /* 2744 * Read next FCF record from HBA searching for the matching 2745 * with in-use record only if not during the fast failover 2746 * period. In case of fast failover period, it shall try to 2747 * determine whether the FCF record just read should be the 2748 * next candidate. 2749 */ 2750 if (!(phba->fcf.fcf_flag & FCF_REDISC_FOV)) { 2751 spin_unlock_irq(&phba->hbalock); 2752 goto read_next_fcf; 2753 } 2754 } 2755 /* 2756 * Update on failover FCF record only if it's in FCF fast-failover 2757 * period; otherwise, update on current FCF record. 2758 */ 2759 if (phba->fcf.fcf_flag & FCF_REDISC_FOV) 2760 fcf_rec = &phba->fcf.failover_rec; 2761 else 2762 fcf_rec = &phba->fcf.current_rec; 2763 2764 if (phba->fcf.fcf_flag & FCF_AVAILABLE) { 2765 /* 2766 * If the driver FCF record does not have boot flag 2767 * set and new hba fcf record has boot flag set, use 2768 * the new hba fcf record. 2769 */ 2770 if (boot_flag && !(fcf_rec->flag & BOOT_ENABLE)) { 2771 /* Choose this FCF record */ 2772 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2773 "2837 Update current FCF record " 2774 "(x%x) with new FCF record (x%x)\n", 2775 fcf_rec->fcf_indx, 2776 bf_get(lpfc_fcf_record_fcf_index, 2777 new_fcf_record)); 2778 __lpfc_update_fcf_record(phba, fcf_rec, new_fcf_record, 2779 addr_mode, vlan_id, BOOT_ENABLE); 2780 spin_unlock_irq(&phba->hbalock); 2781 goto read_next_fcf; 2782 } 2783 /* 2784 * If the driver FCF record has boot flag set and the 2785 * new hba FCF record does not have boot flag, read 2786 * the next FCF record. 2787 */ 2788 if (!boot_flag && (fcf_rec->flag & BOOT_ENABLE)) { 2789 spin_unlock_irq(&phba->hbalock); 2790 goto read_next_fcf; 2791 } 2792 /* 2793 * If the new hba FCF record has lower priority value 2794 * than the driver FCF record, use the new record. 2795 */ 2796 if (new_fcf_record->fip_priority < fcf_rec->priority) { 2797 /* Choose the new FCF record with lower priority */ 2798 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2799 "2838 Update current FCF record " 2800 "(x%x) with new FCF record (x%x)\n", 2801 fcf_rec->fcf_indx, 2802 bf_get(lpfc_fcf_record_fcf_index, 2803 new_fcf_record)); 2804 __lpfc_update_fcf_record(phba, fcf_rec, new_fcf_record, 2805 addr_mode, vlan_id, 0); 2806 /* Reset running random FCF selection count */ 2807 phba->fcf.eligible_fcf_cnt = 1; 2808 } else if (new_fcf_record->fip_priority == fcf_rec->priority) { 2809 /* Update running random FCF selection count */ 2810 phba->fcf.eligible_fcf_cnt++; 2811 select_new_fcf = lpfc_sli4_new_fcf_random_select(phba, 2812 phba->fcf.eligible_fcf_cnt); 2813 if (select_new_fcf) { 2814 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2815 "2839 Update current FCF record " 2816 "(x%x) with new FCF record (x%x)\n", 2817 fcf_rec->fcf_indx, 2818 bf_get(lpfc_fcf_record_fcf_index, 2819 new_fcf_record)); 2820 /* Choose the new FCF by random selection */ 2821 __lpfc_update_fcf_record(phba, fcf_rec, 2822 new_fcf_record, 2823 addr_mode, vlan_id, 0); 2824 } 2825 } 2826 spin_unlock_irq(&phba->hbalock); 2827 goto read_next_fcf; 2828 } 2829 /* 2830 * This is the first suitable FCF record, choose this record for 2831 * initial best-fit FCF. 2832 */ 2833 if (fcf_rec) { 2834 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2835 "2840 Update initial FCF candidate " 2836 "with FCF (x%x)\n", 2837 bf_get(lpfc_fcf_record_fcf_index, 2838 new_fcf_record)); 2839 __lpfc_update_fcf_record(phba, fcf_rec, new_fcf_record, 2840 addr_mode, vlan_id, (boot_flag ? 2841 BOOT_ENABLE : 0)); 2842 phba->fcf.fcf_flag |= FCF_AVAILABLE; 2843 /* Setup initial running random FCF selection count */ 2844 phba->fcf.eligible_fcf_cnt = 1; 2845 } 2846 spin_unlock_irq(&phba->hbalock); 2847 goto read_next_fcf; 2848 2849 read_next_fcf: 2850 lpfc_sli4_mbox_cmd_free(phba, mboxq); 2851 if (next_fcf_index == LPFC_FCOE_FCF_NEXT_NONE || next_fcf_index == 0) { 2852 if (phba->fcf.fcf_flag & FCF_REDISC_FOV) { 2853 /* 2854 * Case of FCF fast failover scan 2855 */ 2856 2857 /* 2858 * It has not found any suitable FCF record, cancel 2859 * FCF scan inprogress, and do nothing 2860 */ 2861 if (!(phba->fcf.failover_rec.flag & RECORD_VALID)) { 2862 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP, 2863 "2782 No suitable FCF found: " 2864 "(x%x/x%x)\n", 2865 phba->fcoe_eventtag_at_fcf_scan, 2866 bf_get(lpfc_fcf_record_fcf_index, 2867 new_fcf_record)); 2868 if (test_bit(HBA_DEVLOSS_TMO, 2869 &phba->hba_flag)) { 2870 clear_bit(FCF_TS_INPROG, 2871 &phba->hba_flag); 2872 /* Unregister in-use FCF and rescan */ 2873 lpfc_printf_log(phba, KERN_INFO, 2874 LOG_FIP, 2875 "2864 On devloss tmo " 2876 "unreg in-use FCF and " 2877 "rescan FCF table\n"); 2878 lpfc_unregister_fcf_rescan(phba); 2879 return; 2880 } 2881 /* 2882 * Let next new FCF event trigger fast failover 2883 */ 2884 clear_bit(FCF_TS_INPROG, &phba->hba_flag); 2885 return; 2886 } 2887 /* 2888 * It has found a suitable FCF record that is not 2889 * the same as in-use FCF record, unregister the 2890 * in-use FCF record, replace the in-use FCF record 2891 * with the new FCF record, mark FCF fast failover 2892 * completed, and then start register the new FCF 2893 * record. 2894 */ 2895 2896 /* Unregister the current in-use FCF record */ 2897 lpfc_unregister_fcf(phba); 2898 2899 /* Replace in-use record with the new record */ 2900 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2901 "2842 Replace in-use FCF (x%x) " 2902 "with failover FCF (x%x)\n", 2903 phba->fcf.current_rec.fcf_indx, 2904 phba->fcf.failover_rec.fcf_indx); 2905 memcpy(&phba->fcf.current_rec, 2906 &phba->fcf.failover_rec, 2907 sizeof(struct lpfc_fcf_rec)); 2908 /* 2909 * Mark the fast FCF failover rediscovery completed 2910 * and the start of the first round of the roundrobin 2911 * FCF failover. 2912 */ 2913 spin_lock_irq(&phba->hbalock); 2914 phba->fcf.fcf_flag &= ~FCF_REDISC_FOV; 2915 spin_unlock_irq(&phba->hbalock); 2916 /* Register to the new FCF record */ 2917 lpfc_register_fcf(phba); 2918 } else { 2919 /* 2920 * In case of transaction period to fast FCF failover, 2921 * do nothing when search to the end of the FCF table. 2922 */ 2923 if ((phba->fcf.fcf_flag & FCF_REDISC_EVT) || 2924 (phba->fcf.fcf_flag & FCF_REDISC_PEND)) 2925 return; 2926 2927 if (phba->cfg_fcf_failover_policy == LPFC_FCF_FOV && 2928 phba->fcf.fcf_flag & FCF_IN_USE) { 2929 /* 2930 * In case the current in-use FCF record no 2931 * longer existed during FCF discovery that 2932 * was not triggered by fast FCF failover 2933 * process, treat it as fast FCF failover. 2934 */ 2935 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2936 "2841 In-use FCF record (x%x) " 2937 "not reported, entering fast " 2938 "FCF failover mode scanning.\n", 2939 phba->fcf.current_rec.fcf_indx); 2940 spin_lock_irq(&phba->hbalock); 2941 phba->fcf.fcf_flag |= FCF_REDISC_FOV; 2942 spin_unlock_irq(&phba->hbalock); 2943 lpfc_sli4_fcf_scan_read_fcf_rec(phba, 2944 LPFC_FCOE_FCF_GET_FIRST); 2945 return; 2946 } 2947 /* Register to the new FCF record */ 2948 lpfc_register_fcf(phba); 2949 } 2950 } else 2951 lpfc_sli4_fcf_scan_read_fcf_rec(phba, next_fcf_index); 2952 return; 2953 2954 out: 2955 lpfc_sli4_mbox_cmd_free(phba, mboxq); 2956 lpfc_register_fcf(phba); 2957 2958 return; 2959 } 2960 2961 /** 2962 * lpfc_mbx_cmpl_fcf_rr_read_fcf_rec - fcf roundrobin read_fcf mbox cmpl hdler 2963 * @phba: pointer to lpfc hba data structure. 2964 * @mboxq: pointer to mailbox object. 2965 * 2966 * This is the callback function for FLOGI failure roundrobin FCF failover 2967 * read FCF record mailbox command from the eligible FCF record bmask for 2968 * performing the failover. If the FCF read back is not valid/available, it 2969 * fails through to retrying FLOGI to the currently registered FCF again. 2970 * Otherwise, if the FCF read back is valid and available, it will set the 2971 * newly read FCF record to the failover FCF record, unregister currently 2972 * registered FCF record, copy the failover FCF record to the current 2973 * FCF record, and then register the current FCF record before proceeding 2974 * to trying FLOGI on the new failover FCF. 2975 */ 2976 void 2977 lpfc_mbx_cmpl_fcf_rr_read_fcf_rec(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq) 2978 { 2979 struct fcf_record *new_fcf_record; 2980 uint32_t boot_flag, addr_mode; 2981 uint16_t next_fcf_index, fcf_index; 2982 uint16_t current_fcf_index; 2983 uint16_t vlan_id = LPFC_FCOE_NULL_VID; 2984 int rc; 2985 2986 /* If link state is not up, stop the roundrobin failover process */ 2987 if (phba->link_state < LPFC_LINK_UP) { 2988 spin_lock_irq(&phba->hbalock); 2989 phba->fcf.fcf_flag &= ~FCF_DISCOVERY; 2990 spin_unlock_irq(&phba->hbalock); 2991 clear_bit(FCF_RR_INPROG, &phba->hba_flag); 2992 goto out; 2993 } 2994 2995 /* Parse the FCF record from the non-embedded mailbox command */ 2996 new_fcf_record = lpfc_sli4_fcf_rec_mbox_parse(phba, mboxq, 2997 &next_fcf_index); 2998 if (!new_fcf_record) { 2999 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP, 3000 "2766 Mailbox command READ_FCF_RECORD " 3001 "failed to retrieve a FCF record. " 3002 "hba_flg x%lx fcf_flg x%x\n", phba->hba_flag, 3003 phba->fcf.fcf_flag); 3004 lpfc_unregister_fcf_rescan(phba); 3005 goto out; 3006 } 3007 3008 /* Get the needed parameters from FCF record */ 3009 rc = lpfc_match_fcf_conn_list(phba, new_fcf_record, &boot_flag, 3010 &addr_mode, &vlan_id); 3011 3012 /* Log the FCF record information if turned on */ 3013 lpfc_sli4_log_fcf_record_info(phba, new_fcf_record, vlan_id, 3014 next_fcf_index); 3015 3016 fcf_index = bf_get(lpfc_fcf_record_fcf_index, new_fcf_record); 3017 if (!rc) { 3018 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 3019 "2848 Remove ineligible FCF (x%x) from " 3020 "from roundrobin bmask\n", fcf_index); 3021 /* Clear roundrobin bmask bit for ineligible FCF */ 3022 lpfc_sli4_fcf_rr_index_clear(phba, fcf_index); 3023 /* Perform next round of roundrobin FCF failover */ 3024 fcf_index = lpfc_sli4_fcf_rr_next_index_get(phba); 3025 rc = lpfc_sli4_fcf_rr_next_proc(phba->pport, fcf_index); 3026 if (rc) 3027 goto out; 3028 goto error_out; 3029 } 3030 3031 if (fcf_index == phba->fcf.current_rec.fcf_indx) { 3032 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 3033 "2760 Perform FLOGI roundrobin FCF failover: " 3034 "FCF (x%x) back to FCF (x%x)\n", 3035 phba->fcf.current_rec.fcf_indx, fcf_index); 3036 /* Wait 500 ms before retrying FLOGI to current FCF */ 3037 msleep(500); 3038 lpfc_issue_init_vfi(phba->pport); 3039 goto out; 3040 } 3041 3042 /* Upload new FCF record to the failover FCF record */ 3043 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 3044 "2834 Update current FCF (x%x) with new FCF (x%x)\n", 3045 phba->fcf.failover_rec.fcf_indx, fcf_index); 3046 spin_lock_irq(&phba->hbalock); 3047 __lpfc_update_fcf_record(phba, &phba->fcf.failover_rec, 3048 new_fcf_record, addr_mode, vlan_id, 3049 (boot_flag ? BOOT_ENABLE : 0)); 3050 spin_unlock_irq(&phba->hbalock); 3051 3052 current_fcf_index = phba->fcf.current_rec.fcf_indx; 3053 3054 /* Unregister the current in-use FCF record */ 3055 lpfc_unregister_fcf(phba); 3056 3057 /* Replace in-use record with the new record */ 3058 memcpy(&phba->fcf.current_rec, &phba->fcf.failover_rec, 3059 sizeof(struct lpfc_fcf_rec)); 3060 3061 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 3062 "2783 Perform FLOGI roundrobin FCF failover: FCF " 3063 "(x%x) to FCF (x%x)\n", current_fcf_index, fcf_index); 3064 3065 error_out: 3066 lpfc_register_fcf(phba); 3067 out: 3068 lpfc_sli4_mbox_cmd_free(phba, mboxq); 3069 } 3070 3071 /** 3072 * lpfc_mbx_cmpl_read_fcf_rec - read fcf completion handler. 3073 * @phba: pointer to lpfc hba data structure. 3074 * @mboxq: pointer to mailbox object. 3075 * 3076 * This is the callback function of read FCF record mailbox command for 3077 * updating the eligible FCF bmask for FLOGI failure roundrobin FCF 3078 * failover when a new FCF event happened. If the FCF read back is 3079 * valid/available and it passes the connection list check, it updates 3080 * the bmask for the eligible FCF record for roundrobin failover. 3081 */ 3082 void 3083 lpfc_mbx_cmpl_read_fcf_rec(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq) 3084 { 3085 struct fcf_record *new_fcf_record; 3086 uint32_t boot_flag, addr_mode; 3087 uint16_t fcf_index, next_fcf_index; 3088 uint16_t vlan_id = LPFC_FCOE_NULL_VID; 3089 int rc; 3090 3091 /* If link state is not up, no need to proceed */ 3092 if (phba->link_state < LPFC_LINK_UP) 3093 goto out; 3094 3095 /* If FCF discovery period is over, no need to proceed */ 3096 if (!(phba->fcf.fcf_flag & FCF_DISCOVERY)) 3097 goto out; 3098 3099 /* Parse the FCF record from the non-embedded mailbox command */ 3100 new_fcf_record = lpfc_sli4_fcf_rec_mbox_parse(phba, mboxq, 3101 &next_fcf_index); 3102 if (!new_fcf_record) { 3103 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 3104 "2767 Mailbox command READ_FCF_RECORD " 3105 "failed to retrieve a FCF record.\n"); 3106 goto out; 3107 } 3108 3109 /* Check the connection list for eligibility */ 3110 rc = lpfc_match_fcf_conn_list(phba, new_fcf_record, &boot_flag, 3111 &addr_mode, &vlan_id); 3112 3113 /* Log the FCF record information if turned on */ 3114 lpfc_sli4_log_fcf_record_info(phba, new_fcf_record, vlan_id, 3115 next_fcf_index); 3116 3117 if (!rc) 3118 goto out; 3119 3120 /* Update the eligible FCF record index bmask */ 3121 fcf_index = bf_get(lpfc_fcf_record_fcf_index, new_fcf_record); 3122 3123 rc = lpfc_sli4_fcf_pri_list_add(phba, fcf_index, new_fcf_record); 3124 3125 out: 3126 lpfc_sli4_mbox_cmd_free(phba, mboxq); 3127 } 3128 3129 /** 3130 * lpfc_init_vfi_cmpl - Completion handler for init_vfi mbox command. 3131 * @phba: pointer to lpfc hba data structure. 3132 * @mboxq: pointer to mailbox data structure. 3133 * 3134 * This function handles completion of init vfi mailbox command. 3135 */ 3136 static void 3137 lpfc_init_vfi_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq) 3138 { 3139 struct lpfc_vport *vport = mboxq->vport; 3140 3141 /* 3142 * VFI not supported on interface type 0, just do the flogi 3143 * Also continue if the VFI is in use - just use the same one. 3144 */ 3145 if (mboxq->u.mb.mbxStatus && 3146 (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) != 3147 LPFC_SLI_INTF_IF_TYPE_0) && 3148 mboxq->u.mb.mbxStatus != MBX_VFI_IN_USE) { 3149 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 3150 "2891 Init VFI mailbox failed 0x%x\n", 3151 mboxq->u.mb.mbxStatus); 3152 mempool_free(mboxq, phba->mbox_mem_pool); 3153 lpfc_vport_set_state(vport, FC_VPORT_FAILED); 3154 return; 3155 } 3156 3157 lpfc_initial_flogi(vport); 3158 mempool_free(mboxq, phba->mbox_mem_pool); 3159 return; 3160 } 3161 3162 /** 3163 * lpfc_issue_init_vfi - Issue init_vfi mailbox command. 3164 * @vport: pointer to lpfc_vport data structure. 3165 * 3166 * This function issue a init_vfi mailbox command to initialize the VFI and 3167 * VPI for the physical port. 3168 */ 3169 void 3170 lpfc_issue_init_vfi(struct lpfc_vport *vport) 3171 { 3172 LPFC_MBOXQ_t *mboxq; 3173 int rc; 3174 struct lpfc_hba *phba = vport->phba; 3175 3176 mboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 3177 if (!mboxq) { 3178 lpfc_printf_vlog(vport, KERN_ERR, 3179 LOG_TRACE_EVENT, "2892 Failed to allocate " 3180 "init_vfi mailbox\n"); 3181 return; 3182 } 3183 lpfc_init_vfi(mboxq, vport); 3184 mboxq->mbox_cmpl = lpfc_init_vfi_cmpl; 3185 rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_NOWAIT); 3186 if (rc == MBX_NOT_FINISHED) { 3187 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 3188 "2893 Failed to issue init_vfi mailbox\n"); 3189 mempool_free(mboxq, vport->phba->mbox_mem_pool); 3190 } 3191 } 3192 3193 /** 3194 * lpfc_init_vpi_cmpl - Completion handler for init_vpi mbox command. 3195 * @phba: pointer to lpfc hba data structure. 3196 * @mboxq: pointer to mailbox data structure. 3197 * 3198 * This function handles completion of init vpi mailbox command. 3199 */ 3200 void 3201 lpfc_init_vpi_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq) 3202 { 3203 struct lpfc_vport *vport = mboxq->vport; 3204 struct lpfc_nodelist *ndlp; 3205 3206 if (mboxq->u.mb.mbxStatus) { 3207 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 3208 "2609 Init VPI mailbox failed 0x%x\n", 3209 mboxq->u.mb.mbxStatus); 3210 mempool_free(mboxq, phba->mbox_mem_pool); 3211 lpfc_vport_set_state(vport, FC_VPORT_FAILED); 3212 return; 3213 } 3214 clear_bit(FC_VPORT_NEEDS_INIT_VPI, &vport->fc_flag); 3215 3216 /* If this port is physical port or FDISC is done, do reg_vpi */ 3217 if ((phba->pport == vport) || (vport->port_state == LPFC_FDISC)) { 3218 ndlp = lpfc_findnode_did(vport, Fabric_DID); 3219 if (!ndlp) 3220 lpfc_printf_vlog(vport, KERN_ERR, 3221 LOG_TRACE_EVENT, 3222 "2731 Cannot find fabric " 3223 "controller node\n"); 3224 else 3225 lpfc_register_new_vport(phba, vport, ndlp); 3226 mempool_free(mboxq, phba->mbox_mem_pool); 3227 return; 3228 } 3229 3230 if (phba->link_flag & LS_NPIV_FAB_SUPPORTED) 3231 lpfc_initial_fdisc(vport); 3232 else { 3233 lpfc_vport_set_state(vport, FC_VPORT_NO_FABRIC_SUPP); 3234 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 3235 "2606 No NPIV Fabric support\n"); 3236 } 3237 mempool_free(mboxq, phba->mbox_mem_pool); 3238 return; 3239 } 3240 3241 /** 3242 * lpfc_issue_init_vpi - Issue init_vpi mailbox command. 3243 * @vport: pointer to lpfc_vport data structure. 3244 * 3245 * This function issue a init_vpi mailbox command to initialize 3246 * VPI for the vport. 3247 */ 3248 void 3249 lpfc_issue_init_vpi(struct lpfc_vport *vport) 3250 { 3251 LPFC_MBOXQ_t *mboxq; 3252 int rc, vpi; 3253 3254 if ((vport->port_type != LPFC_PHYSICAL_PORT) && (!vport->vpi)) { 3255 vpi = lpfc_alloc_vpi(vport->phba); 3256 if (!vpi) { 3257 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 3258 "3303 Failed to obtain vport vpi\n"); 3259 lpfc_vport_set_state(vport, FC_VPORT_FAILED); 3260 return; 3261 } 3262 vport->vpi = vpi; 3263 } 3264 3265 mboxq = mempool_alloc(vport->phba->mbox_mem_pool, GFP_KERNEL); 3266 if (!mboxq) { 3267 lpfc_printf_vlog(vport, KERN_ERR, 3268 LOG_TRACE_EVENT, "2607 Failed to allocate " 3269 "init_vpi mailbox\n"); 3270 return; 3271 } 3272 lpfc_init_vpi(vport->phba, mboxq, vport->vpi); 3273 mboxq->vport = vport; 3274 mboxq->mbox_cmpl = lpfc_init_vpi_cmpl; 3275 rc = lpfc_sli_issue_mbox(vport->phba, mboxq, MBX_NOWAIT); 3276 if (rc == MBX_NOT_FINISHED) { 3277 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 3278 "2608 Failed to issue init_vpi mailbox\n"); 3279 mempool_free(mboxq, vport->phba->mbox_mem_pool); 3280 } 3281 } 3282 3283 /** 3284 * lpfc_start_fdiscs - send fdiscs for each vports on this port. 3285 * @phba: pointer to lpfc hba data structure. 3286 * 3287 * This function loops through the list of vports on the @phba and issues an 3288 * FDISC if possible. 3289 */ 3290 void 3291 lpfc_start_fdiscs(struct lpfc_hba *phba) 3292 { 3293 struct lpfc_vport **vports; 3294 int i; 3295 3296 vports = lpfc_create_vport_work_array(phba); 3297 if (vports != NULL) { 3298 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) { 3299 if (vports[i]->port_type == LPFC_PHYSICAL_PORT) 3300 continue; 3301 /* There are no vpi for this vport */ 3302 if (vports[i]->vpi > phba->max_vpi) { 3303 lpfc_vport_set_state(vports[i], 3304 FC_VPORT_FAILED); 3305 continue; 3306 } 3307 if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) { 3308 lpfc_vport_set_state(vports[i], 3309 FC_VPORT_LINKDOWN); 3310 continue; 3311 } 3312 if (test_bit(FC_VPORT_NEEDS_INIT_VPI, 3313 &vports[i]->fc_flag)) { 3314 lpfc_issue_init_vpi(vports[i]); 3315 continue; 3316 } 3317 if (phba->link_flag & LS_NPIV_FAB_SUPPORTED) 3318 lpfc_initial_fdisc(vports[i]); 3319 else { 3320 lpfc_vport_set_state(vports[i], 3321 FC_VPORT_NO_FABRIC_SUPP); 3322 lpfc_printf_vlog(vports[i], KERN_ERR, 3323 LOG_TRACE_EVENT, 3324 "0259 No NPIV " 3325 "Fabric support\n"); 3326 } 3327 } 3328 } 3329 lpfc_destroy_vport_work_array(phba, vports); 3330 } 3331 3332 void 3333 lpfc_mbx_cmpl_reg_vfi(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq) 3334 { 3335 struct lpfc_vport *vport = mboxq->vport; 3336 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 3337 3338 /* 3339 * VFI not supported for interface type 0, so ignore any mailbox 3340 * error (except VFI in use) and continue with the discovery. 3341 */ 3342 if (mboxq->u.mb.mbxStatus && 3343 (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) != 3344 LPFC_SLI_INTF_IF_TYPE_0) && 3345 mboxq->u.mb.mbxStatus != MBX_VFI_IN_USE) { 3346 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 3347 "2018 REG_VFI mbxStatus error x%x " 3348 "HBA state x%x\n", 3349 mboxq->u.mb.mbxStatus, vport->port_state); 3350 if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) { 3351 /* FLOGI failed, use loop map to make discovery list */ 3352 lpfc_disc_list_loopmap(vport); 3353 /* Start discovery */ 3354 lpfc_disc_start(vport); 3355 goto out_free_mem; 3356 } 3357 lpfc_vport_set_state(vport, FC_VPORT_FAILED); 3358 goto out_free_mem; 3359 } 3360 3361 /* If the VFI is already registered, there is nothing else to do 3362 * Unless this was a VFI update and we are in PT2PT mode, then 3363 * we should drop through to set the port state to ready. 3364 */ 3365 if (test_bit(FC_VFI_REGISTERED, &vport->fc_flag)) 3366 if (!(phba->sli_rev == LPFC_SLI_REV4 && 3367 test_bit(FC_PT2PT, &vport->fc_flag))) 3368 goto out_free_mem; 3369 3370 /* The VPI is implicitly registered when the VFI is registered */ 3371 set_bit(FC_VFI_REGISTERED, &vport->fc_flag); 3372 clear_bit(FC_VPORT_NEEDS_REG_VPI, &vport->fc_flag); 3373 clear_bit(FC_VPORT_NEEDS_INIT_VPI, &vport->fc_flag); 3374 spin_lock_irq(shost->host_lock); 3375 vport->vpi_state |= LPFC_VPI_REGISTERED; 3376 spin_unlock_irq(shost->host_lock); 3377 3378 /* In case SLI4 FC loopback test, we are ready */ 3379 if ((phba->sli_rev == LPFC_SLI_REV4) && 3380 (phba->link_flag & LS_LOOPBACK_MODE)) { 3381 phba->link_state = LPFC_HBA_READY; 3382 goto out_free_mem; 3383 } 3384 3385 lpfc_printf_vlog(vport, KERN_INFO, LOG_SLI, 3386 "3313 cmpl reg vfi port_state:%x fc_flag:%lx " 3387 "myDid:%x alpacnt:%d LinkState:%x topology:%x\n", 3388 vport->port_state, vport->fc_flag, vport->fc_myDID, 3389 vport->phba->alpa_map[0], 3390 phba->link_state, phba->fc_topology); 3391 3392 if (vport->port_state == LPFC_FABRIC_CFG_LINK) { 3393 /* 3394 * For private loop or for NPort pt2pt, 3395 * just start discovery and we are done. 3396 */ 3397 if (test_bit(FC_PT2PT, &vport->fc_flag) || 3398 (phba->fc_topology == LPFC_TOPOLOGY_LOOP && 3399 !test_bit(FC_PUBLIC_LOOP, &vport->fc_flag))) { 3400 3401 /* Use loop map to make discovery list */ 3402 lpfc_disc_list_loopmap(vport); 3403 /* Start discovery */ 3404 if (test_bit(FC_PT2PT, &vport->fc_flag)) 3405 vport->port_state = LPFC_VPORT_READY; 3406 else 3407 lpfc_disc_start(vport); 3408 } else { 3409 lpfc_start_fdiscs(phba); 3410 lpfc_do_scr_ns_plogi(phba, vport); 3411 } 3412 } 3413 3414 out_free_mem: 3415 lpfc_mbox_rsrc_cleanup(phba, mboxq, MBOX_THD_UNLOCKED); 3416 } 3417 3418 static void 3419 lpfc_mbx_cmpl_read_sparam(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 3420 { 3421 MAILBOX_t *mb = &pmb->u.mb; 3422 struct lpfc_dmabuf *mp = pmb->ctx_buf; 3423 struct lpfc_vport *vport = pmb->vport; 3424 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 3425 struct serv_parm *sp = &vport->fc_sparam; 3426 uint32_t ed_tov; 3427 3428 /* Check for error */ 3429 if (mb->mbxStatus) { 3430 /* READ_SPARAM mbox error <mbxStatus> state <hba_state> */ 3431 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 3432 "0319 READ_SPARAM mbxStatus error x%x " 3433 "hba state x%x>\n", 3434 mb->mbxStatus, vport->port_state); 3435 lpfc_linkdown(phba); 3436 goto out; 3437 } 3438 3439 memcpy((uint8_t *) &vport->fc_sparam, (uint8_t *) mp->virt, 3440 sizeof (struct serv_parm)); 3441 3442 ed_tov = be32_to_cpu(sp->cmn.e_d_tov); 3443 if (sp->cmn.edtovResolution) /* E_D_TOV ticks are in nanoseconds */ 3444 ed_tov = (ed_tov + 999999) / 1000000; 3445 3446 phba->fc_edtov = ed_tov; 3447 phba->fc_ratov = (2 * ed_tov) / 1000; 3448 if (phba->fc_ratov < FF_DEF_RATOV) { 3449 /* RA_TOV should be atleast 10sec for initial flogi */ 3450 phba->fc_ratov = FF_DEF_RATOV; 3451 } 3452 3453 lpfc_update_vport_wwn(vport); 3454 fc_host_port_name(shost) = wwn_to_u64(vport->fc_portname.u.wwn); 3455 if (vport->port_type == LPFC_PHYSICAL_PORT) { 3456 memcpy(&phba->wwnn, &vport->fc_nodename, sizeof(phba->wwnn)); 3457 memcpy(&phba->wwpn, &vport->fc_portname, sizeof(phba->wwnn)); 3458 } 3459 3460 lpfc_mbox_rsrc_cleanup(phba, pmb, MBOX_THD_UNLOCKED); 3461 3462 /* Check if sending the FLOGI is being deferred to after we get 3463 * up to date CSPs from MBX_READ_SPARAM. 3464 */ 3465 if (test_bit(HBA_DEFER_FLOGI, &phba->hba_flag)) { 3466 lpfc_initial_flogi(vport); 3467 clear_bit(HBA_DEFER_FLOGI, &phba->hba_flag); 3468 } 3469 return; 3470 3471 out: 3472 lpfc_mbox_rsrc_cleanup(phba, pmb, MBOX_THD_UNLOCKED); 3473 lpfc_issue_clear_la(phba, vport); 3474 } 3475 3476 static void 3477 lpfc_mbx_process_link_up(struct lpfc_hba *phba, struct lpfc_mbx_read_top *la) 3478 { 3479 struct lpfc_vport *vport = phba->pport; 3480 LPFC_MBOXQ_t *sparam_mbox, *cfglink_mbox = NULL; 3481 int i; 3482 int rc; 3483 struct fcf_record *fcf_record; 3484 unsigned long iflags; 3485 3486 spin_lock_irqsave(&phba->hbalock, iflags); 3487 phba->fc_linkspeed = bf_get(lpfc_mbx_read_top_link_spd, la); 3488 3489 if (!test_bit(HBA_FCOE_MODE, &phba->hba_flag)) { 3490 switch (bf_get(lpfc_mbx_read_top_link_spd, la)) { 3491 case LPFC_LINK_SPEED_1GHZ: 3492 case LPFC_LINK_SPEED_2GHZ: 3493 case LPFC_LINK_SPEED_4GHZ: 3494 case LPFC_LINK_SPEED_8GHZ: 3495 case LPFC_LINK_SPEED_10GHZ: 3496 case LPFC_LINK_SPEED_16GHZ: 3497 case LPFC_LINK_SPEED_32GHZ: 3498 case LPFC_LINK_SPEED_64GHZ: 3499 case LPFC_LINK_SPEED_128GHZ: 3500 case LPFC_LINK_SPEED_256GHZ: 3501 break; 3502 default: 3503 phba->fc_linkspeed = LPFC_LINK_SPEED_UNKNOWN; 3504 break; 3505 } 3506 } 3507 3508 if (phba->fc_topology && 3509 phba->fc_topology != bf_get(lpfc_mbx_read_top_topology, la)) { 3510 lpfc_printf_log(phba, KERN_WARNING, LOG_SLI, 3511 "3314 Toplogy changed was 0x%x is 0x%x\n", 3512 phba->fc_topology, 3513 bf_get(lpfc_mbx_read_top_topology, la)); 3514 phba->fc_topology_changed = 1; 3515 } 3516 3517 phba->fc_topology = bf_get(lpfc_mbx_read_top_topology, la); 3518 phba->link_flag &= ~(LS_NPIV_FAB_SUPPORTED | LS_CT_VEN_RPA); 3519 3520 if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) { 3521 phba->sli3_options &= ~LPFC_SLI3_NPIV_ENABLED; 3522 3523 /* if npiv is enabled and this adapter supports npiv log 3524 * a message that npiv is not supported in this topology 3525 */ 3526 if (phba->cfg_enable_npiv && phba->max_vpi) 3527 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT, 3528 "1309 Link Up Event npiv not supported in loop " 3529 "topology\n"); 3530 /* Get Loop Map information */ 3531 if (bf_get(lpfc_mbx_read_top_il, la)) 3532 set_bit(FC_LBIT, &vport->fc_flag); 3533 3534 vport->fc_myDID = bf_get(lpfc_mbx_read_top_alpa_granted, la); 3535 i = la->lilpBde64.tus.f.bdeSize; 3536 3537 if (i == 0) { 3538 phba->alpa_map[0] = 0; 3539 } else { 3540 if (vport->cfg_log_verbose & LOG_LINK_EVENT) { 3541 int numalpa, j, k; 3542 union { 3543 uint8_t pamap[16]; 3544 struct { 3545 uint32_t wd1; 3546 uint32_t wd2; 3547 uint32_t wd3; 3548 uint32_t wd4; 3549 } pa; 3550 } un; 3551 numalpa = phba->alpa_map[0]; 3552 j = 0; 3553 while (j < numalpa) { 3554 memset(un.pamap, 0, 16); 3555 for (k = 1; j < numalpa; k++) { 3556 un.pamap[k - 1] = 3557 phba->alpa_map[j + 1]; 3558 j++; 3559 if (k == 16) 3560 break; 3561 } 3562 /* Link Up Event ALPA map */ 3563 lpfc_printf_log(phba, 3564 KERN_WARNING, 3565 LOG_LINK_EVENT, 3566 "1304 Link Up Event " 3567 "ALPA map Data: x%x " 3568 "x%x x%x x%x\n", 3569 un.pa.wd1, un.pa.wd2, 3570 un.pa.wd3, un.pa.wd4); 3571 } 3572 } 3573 } 3574 } else { 3575 if (!(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)) { 3576 if (phba->max_vpi && phba->cfg_enable_npiv && 3577 (phba->sli_rev >= LPFC_SLI_REV3)) 3578 phba->sli3_options |= LPFC_SLI3_NPIV_ENABLED; 3579 } 3580 vport->fc_myDID = phba->fc_pref_DID; 3581 set_bit(FC_LBIT, &vport->fc_flag); 3582 } 3583 spin_unlock_irqrestore(&phba->hbalock, iflags); 3584 3585 lpfc_linkup(phba); 3586 sparam_mbox = NULL; 3587 3588 sparam_mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 3589 if (!sparam_mbox) 3590 goto out; 3591 3592 rc = lpfc_read_sparam(phba, sparam_mbox, 0); 3593 if (rc) { 3594 mempool_free(sparam_mbox, phba->mbox_mem_pool); 3595 goto out; 3596 } 3597 sparam_mbox->vport = vport; 3598 sparam_mbox->mbox_cmpl = lpfc_mbx_cmpl_read_sparam; 3599 rc = lpfc_sli_issue_mbox(phba, sparam_mbox, MBX_NOWAIT); 3600 if (rc == MBX_NOT_FINISHED) { 3601 lpfc_mbox_rsrc_cleanup(phba, sparam_mbox, MBOX_THD_UNLOCKED); 3602 goto out; 3603 } 3604 3605 if (!test_bit(HBA_FCOE_MODE, &phba->hba_flag)) { 3606 cfglink_mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 3607 if (!cfglink_mbox) 3608 goto out; 3609 vport->port_state = LPFC_LOCAL_CFG_LINK; 3610 lpfc_config_link(phba, cfglink_mbox); 3611 cfglink_mbox->vport = vport; 3612 cfglink_mbox->mbox_cmpl = lpfc_mbx_cmpl_local_config_link; 3613 rc = lpfc_sli_issue_mbox(phba, cfglink_mbox, MBX_NOWAIT); 3614 if (rc == MBX_NOT_FINISHED) { 3615 mempool_free(cfglink_mbox, phba->mbox_mem_pool); 3616 goto out; 3617 } 3618 } else { 3619 vport->port_state = LPFC_VPORT_UNKNOWN; 3620 /* 3621 * Add the driver's default FCF record at FCF index 0 now. This 3622 * is phase 1 implementation that support FCF index 0 and driver 3623 * defaults. 3624 */ 3625 if (!test_bit(HBA_FIP_SUPPORT, &phba->hba_flag)) { 3626 fcf_record = kzalloc(sizeof(struct fcf_record), 3627 GFP_KERNEL); 3628 if (unlikely(!fcf_record)) { 3629 lpfc_printf_log(phba, KERN_ERR, 3630 LOG_TRACE_EVENT, 3631 "2554 Could not allocate memory for " 3632 "fcf record\n"); 3633 rc = -ENODEV; 3634 goto out; 3635 } 3636 3637 lpfc_sli4_build_dflt_fcf_record(phba, fcf_record, 3638 LPFC_FCOE_FCF_DEF_INDEX); 3639 rc = lpfc_sli4_add_fcf_record(phba, fcf_record); 3640 if (unlikely(rc)) { 3641 lpfc_printf_log(phba, KERN_ERR, 3642 LOG_TRACE_EVENT, 3643 "2013 Could not manually add FCF " 3644 "record 0, status %d\n", rc); 3645 rc = -ENODEV; 3646 kfree(fcf_record); 3647 goto out; 3648 } 3649 kfree(fcf_record); 3650 } 3651 /* 3652 * The driver is expected to do FIP/FCF. Call the port 3653 * and get the FCF Table. 3654 */ 3655 if (test_bit(FCF_TS_INPROG, &phba->hba_flag)) 3656 return; 3657 /* This is the initial FCF discovery scan */ 3658 spin_lock_irqsave(&phba->hbalock, iflags); 3659 phba->fcf.fcf_flag |= FCF_INIT_DISC; 3660 spin_unlock_irqrestore(&phba->hbalock, iflags); 3661 lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY, 3662 "2778 Start FCF table scan at linkup\n"); 3663 rc = lpfc_sli4_fcf_scan_read_fcf_rec(phba, 3664 LPFC_FCOE_FCF_GET_FIRST); 3665 if (rc) { 3666 spin_lock_irqsave(&phba->hbalock, iflags); 3667 phba->fcf.fcf_flag &= ~FCF_INIT_DISC; 3668 spin_unlock_irqrestore(&phba->hbalock, iflags); 3669 goto out; 3670 } 3671 /* Reset FCF roundrobin bmask for new discovery */ 3672 lpfc_sli4_clear_fcf_rr_bmask(phba); 3673 } 3674 3675 /* Prepare for LINK up registrations */ 3676 memset(phba->os_host_name, 0, sizeof(phba->os_host_name)); 3677 scnprintf(phba->os_host_name, sizeof(phba->os_host_name), "%s", 3678 init_utsname()->nodename); 3679 return; 3680 out: 3681 lpfc_vport_set_state(vport, FC_VPORT_FAILED); 3682 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 3683 "0263 Discovery Mailbox error: state: 0x%x : x%px x%px\n", 3684 vport->port_state, sparam_mbox, cfglink_mbox); 3685 lpfc_issue_clear_la(phba, vport); 3686 return; 3687 } 3688 3689 static void 3690 lpfc_enable_la(struct lpfc_hba *phba) 3691 { 3692 uint32_t control; 3693 struct lpfc_sli *psli = &phba->sli; 3694 spin_lock_irq(&phba->hbalock); 3695 psli->sli_flag |= LPFC_PROCESS_LA; 3696 if (phba->sli_rev <= LPFC_SLI_REV3) { 3697 control = readl(phba->HCregaddr); 3698 control |= HC_LAINT_ENA; 3699 writel(control, phba->HCregaddr); 3700 readl(phba->HCregaddr); /* flush */ 3701 } 3702 spin_unlock_irq(&phba->hbalock); 3703 } 3704 3705 static void 3706 lpfc_mbx_issue_link_down(struct lpfc_hba *phba) 3707 { 3708 lpfc_linkdown(phba); 3709 lpfc_enable_la(phba); 3710 lpfc_unregister_unused_fcf(phba); 3711 /* turn on Link Attention interrupts - no CLEAR_LA needed */ 3712 } 3713 3714 3715 /* 3716 * This routine handles processing a READ_TOPOLOGY mailbox 3717 * command upon completion. It is setup in the LPFC_MBOXQ 3718 * as the completion routine when the command is 3719 * handed off to the SLI layer. SLI4 only. 3720 */ 3721 void 3722 lpfc_mbx_cmpl_read_topology(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 3723 { 3724 struct lpfc_vport *vport = pmb->vport; 3725 struct lpfc_mbx_read_top *la; 3726 struct lpfc_sli_ring *pring; 3727 MAILBOX_t *mb = &pmb->u.mb; 3728 struct lpfc_dmabuf *mp = pmb->ctx_buf; 3729 uint8_t attn_type; 3730 3731 /* Unblock ELS traffic */ 3732 pring = lpfc_phba_elsring(phba); 3733 if (pring) 3734 pring->flag &= ~LPFC_STOP_IOCB_EVENT; 3735 3736 /* Check for error */ 3737 if (mb->mbxStatus) { 3738 lpfc_printf_log(phba, KERN_INFO, LOG_LINK_EVENT, 3739 "1307 READ_LA mbox error x%x state x%x\n", 3740 mb->mbxStatus, vport->port_state); 3741 lpfc_mbx_issue_link_down(phba); 3742 phba->link_state = LPFC_HBA_ERROR; 3743 goto lpfc_mbx_cmpl_read_topology_free_mbuf; 3744 } 3745 3746 la = (struct lpfc_mbx_read_top *) &pmb->u.mb.un.varReadTop; 3747 attn_type = bf_get(lpfc_mbx_read_top_att_type, la); 3748 3749 memcpy(&phba->alpa_map[0], mp->virt, 128); 3750 3751 if (bf_get(lpfc_mbx_read_top_pb, la)) 3752 set_bit(FC_BYPASSED_MODE, &vport->fc_flag); 3753 else 3754 clear_bit(FC_BYPASSED_MODE, &vport->fc_flag); 3755 3756 if (phba->fc_eventTag <= la->eventTag) { 3757 phba->fc_stat.LinkMultiEvent++; 3758 if (attn_type == LPFC_ATT_LINK_UP) 3759 if (phba->fc_eventTag != 0) 3760 lpfc_linkdown(phba); 3761 } 3762 3763 phba->fc_eventTag = la->eventTag; 3764 phba->link_events++; 3765 if (attn_type == LPFC_ATT_LINK_UP) { 3766 phba->fc_stat.LinkUp++; 3767 if (phba->link_flag & LS_LOOPBACK_MODE) { 3768 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT, 3769 "1306 Link Up Event in loop back mode " 3770 "x%x received Data: x%x x%x x%x x%x\n", 3771 la->eventTag, phba->fc_eventTag, 3772 bf_get(lpfc_mbx_read_top_alpa_granted, 3773 la), 3774 bf_get(lpfc_mbx_read_top_link_spd, la), 3775 phba->alpa_map[0]); 3776 } else { 3777 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT, 3778 "1303 Link Up Event x%x received " 3779 "Data: x%x x%x x%x x%x x%x\n", 3780 la->eventTag, phba->fc_eventTag, 3781 bf_get(lpfc_mbx_read_top_alpa_granted, 3782 la), 3783 bf_get(lpfc_mbx_read_top_link_spd, la), 3784 phba->alpa_map[0], 3785 bf_get(lpfc_mbx_read_top_fa, la)); 3786 } 3787 lpfc_mbx_process_link_up(phba, la); 3788 3789 if (phba->cmf_active_mode != LPFC_CFG_OFF) 3790 lpfc_cmf_signal_init(phba); 3791 3792 if (phba->lmt & LMT_64Gb) 3793 lpfc_read_lds_params(phba); 3794 3795 } else if (attn_type == LPFC_ATT_LINK_DOWN || 3796 attn_type == LPFC_ATT_UNEXP_WWPN) { 3797 phba->fc_stat.LinkDown++; 3798 if (phba->link_flag & LS_LOOPBACK_MODE) 3799 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT, 3800 "1308 Link Down Event in loop back mode " 3801 "x%x received " 3802 "Data: x%x x%x x%lx\n", 3803 la->eventTag, phba->fc_eventTag, 3804 phba->pport->port_state, vport->fc_flag); 3805 else if (attn_type == LPFC_ATT_UNEXP_WWPN) 3806 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT, 3807 "1313 Link Down Unexpected FA WWPN Event x%x " 3808 "received Data: x%x x%x x%lx x%x\n", 3809 la->eventTag, phba->fc_eventTag, 3810 phba->pport->port_state, vport->fc_flag, 3811 bf_get(lpfc_mbx_read_top_fa, la)); 3812 else 3813 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT, 3814 "1305 Link Down Event x%x received " 3815 "Data: x%x x%x x%lx x%x\n", 3816 la->eventTag, phba->fc_eventTag, 3817 phba->pport->port_state, vport->fc_flag, 3818 bf_get(lpfc_mbx_read_top_fa, la)); 3819 lpfc_mbx_issue_link_down(phba); 3820 } 3821 3822 if ((phba->sli_rev < LPFC_SLI_REV4) && 3823 bf_get(lpfc_mbx_read_top_fa, la)) 3824 lpfc_printf_log(phba, KERN_INFO, LOG_LINK_EVENT, 3825 "1311 fa %d\n", 3826 bf_get(lpfc_mbx_read_top_fa, la)); 3827 3828 lpfc_mbx_cmpl_read_topology_free_mbuf: 3829 lpfc_mbox_rsrc_cleanup(phba, pmb, MBOX_THD_UNLOCKED); 3830 } 3831 3832 /* 3833 * This routine handles processing a REG_LOGIN mailbox 3834 * command upon completion. It is setup in the LPFC_MBOXQ 3835 * as the completion routine when the command is 3836 * handed off to the SLI layer. 3837 */ 3838 void 3839 lpfc_mbx_cmpl_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 3840 { 3841 struct lpfc_vport *vport = pmb->vport; 3842 struct lpfc_dmabuf *mp = pmb->ctx_buf; 3843 struct lpfc_nodelist *ndlp = pmb->ctx_ndlp; 3844 3845 /* The driver calls the state machine with the pmb pointer 3846 * but wants to make sure a stale ctx_buf isn't acted on. 3847 * The ctx_buf is restored later and cleaned up. 3848 */ 3849 pmb->ctx_buf = NULL; 3850 pmb->ctx_ndlp = NULL; 3851 3852 lpfc_printf_vlog(vport, KERN_INFO, LOG_SLI | LOG_NODE | LOG_DISCOVERY, 3853 "0002 rpi:%x DID:%x flg:%x %d x%px\n", 3854 ndlp->nlp_rpi, ndlp->nlp_DID, ndlp->nlp_flag, 3855 kref_read(&ndlp->kref), 3856 ndlp); 3857 if (ndlp->nlp_flag & NLP_REG_LOGIN_SEND) 3858 ndlp->nlp_flag &= ~NLP_REG_LOGIN_SEND; 3859 3860 if (ndlp->nlp_flag & NLP_IGNR_REG_CMPL || 3861 ndlp->nlp_state != NLP_STE_REG_LOGIN_ISSUE) { 3862 /* We rcvd a rscn after issuing this 3863 * mbox reg login, we may have cycled 3864 * back through the state and be 3865 * back at reg login state so this 3866 * mbox needs to be ignored becase 3867 * there is another reg login in 3868 * process. 3869 */ 3870 spin_lock_irq(&ndlp->lock); 3871 ndlp->nlp_flag &= ~NLP_IGNR_REG_CMPL; 3872 spin_unlock_irq(&ndlp->lock); 3873 3874 /* 3875 * We cannot leave the RPI registered because 3876 * if we go thru discovery again for this ndlp 3877 * a subsequent REG_RPI will fail. 3878 */ 3879 ndlp->nlp_flag |= NLP_RPI_REGISTERED; 3880 lpfc_unreg_rpi(vport, ndlp); 3881 } 3882 3883 /* Call state machine */ 3884 lpfc_disc_state_machine(vport, ndlp, pmb, NLP_EVT_CMPL_REG_LOGIN); 3885 pmb->ctx_buf = mp; 3886 lpfc_mbox_rsrc_cleanup(phba, pmb, MBOX_THD_UNLOCKED); 3887 3888 /* decrement the node reference count held for this callback 3889 * function. 3890 */ 3891 lpfc_nlp_put(ndlp); 3892 3893 return; 3894 } 3895 3896 static void 3897 lpfc_mbx_cmpl_unreg_vpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 3898 { 3899 MAILBOX_t *mb = &pmb->u.mb; 3900 struct lpfc_vport *vport = pmb->vport; 3901 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 3902 3903 switch (mb->mbxStatus) { 3904 case 0x0011: 3905 case 0x0020: 3906 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE, 3907 "0911 cmpl_unreg_vpi, mb status = 0x%x\n", 3908 mb->mbxStatus); 3909 break; 3910 /* If VPI is busy, reset the HBA */ 3911 case 0x9700: 3912 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 3913 "2798 Unreg_vpi failed vpi 0x%x, mb status = 0x%x\n", 3914 vport->vpi, mb->mbxStatus); 3915 if (!test_bit(FC_UNLOADING, &phba->pport->load_flag)) 3916 lpfc_workq_post_event(phba, NULL, NULL, 3917 LPFC_EVT_RESET_HBA); 3918 } 3919 3920 set_bit(FC_VPORT_NEEDS_REG_VPI, &vport->fc_flag); 3921 spin_lock_irq(shost->host_lock); 3922 vport->vpi_state &= ~LPFC_VPI_REGISTERED; 3923 spin_unlock_irq(shost->host_lock); 3924 mempool_free(pmb, phba->mbox_mem_pool); 3925 lpfc_cleanup_vports_rrqs(vport, NULL); 3926 /* 3927 * This shost reference might have been taken at the beginning of 3928 * lpfc_vport_delete() 3929 */ 3930 if (test_bit(FC_UNLOADING, &vport->load_flag) && vport != phba->pport) 3931 scsi_host_put(shost); 3932 } 3933 3934 int 3935 lpfc_mbx_unreg_vpi(struct lpfc_vport *vport) 3936 { 3937 struct lpfc_hba *phba = vport->phba; 3938 LPFC_MBOXQ_t *mbox; 3939 int rc; 3940 3941 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 3942 if (!mbox) 3943 return 1; 3944 3945 lpfc_unreg_vpi(phba, vport->vpi, mbox); 3946 mbox->vport = vport; 3947 mbox->mbox_cmpl = lpfc_mbx_cmpl_unreg_vpi; 3948 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT); 3949 if (rc == MBX_NOT_FINISHED) { 3950 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 3951 "1800 Could not issue unreg_vpi\n"); 3952 mempool_free(mbox, phba->mbox_mem_pool); 3953 return rc; 3954 } 3955 return 0; 3956 } 3957 3958 static void 3959 lpfc_mbx_cmpl_reg_vpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 3960 { 3961 struct lpfc_vport *vport = pmb->vport; 3962 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 3963 MAILBOX_t *mb = &pmb->u.mb; 3964 3965 switch (mb->mbxStatus) { 3966 case 0x0011: 3967 case 0x9601: 3968 case 0x9602: 3969 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE, 3970 "0912 cmpl_reg_vpi, mb status = 0x%x\n", 3971 mb->mbxStatus); 3972 lpfc_vport_set_state(vport, FC_VPORT_FAILED); 3973 clear_bit(FC_FABRIC, &vport->fc_flag); 3974 clear_bit(FC_PUBLIC_LOOP, &vport->fc_flag); 3975 vport->fc_myDID = 0; 3976 3977 if ((vport->cfg_enable_fc4_type == LPFC_ENABLE_BOTH) || 3978 (vport->cfg_enable_fc4_type == LPFC_ENABLE_NVME)) { 3979 if (phba->nvmet_support) 3980 lpfc_nvmet_update_targetport(phba); 3981 else 3982 lpfc_nvme_update_localport(vport); 3983 } 3984 goto out; 3985 } 3986 3987 clear_bit(FC_VPORT_NEEDS_REG_VPI, &vport->fc_flag); 3988 spin_lock_irq(shost->host_lock); 3989 vport->vpi_state |= LPFC_VPI_REGISTERED; 3990 spin_unlock_irq(shost->host_lock); 3991 vport->num_disc_nodes = 0; 3992 /* go thru NPR list and issue ELS PLOGIs */ 3993 if (atomic_read(&vport->fc_npr_cnt)) 3994 lpfc_els_disc_plogi(vport); 3995 3996 if (!vport->num_disc_nodes) { 3997 clear_bit(FC_NDISC_ACTIVE, &vport->fc_flag); 3998 lpfc_can_disctmo(vport); 3999 } 4000 vport->port_state = LPFC_VPORT_READY; 4001 4002 out: 4003 mempool_free(pmb, phba->mbox_mem_pool); 4004 return; 4005 } 4006 4007 /** 4008 * lpfc_create_static_vport - Read HBA config region to create static vports. 4009 * @phba: pointer to lpfc hba data structure. 4010 * 4011 * This routine issue a DUMP mailbox command for config region 22 to get 4012 * the list of static vports to be created. The function create vports 4013 * based on the information returned from the HBA. 4014 **/ 4015 void 4016 lpfc_create_static_vport(struct lpfc_hba *phba) 4017 { 4018 LPFC_MBOXQ_t *pmb = NULL; 4019 MAILBOX_t *mb; 4020 struct static_vport_info *vport_info; 4021 int mbx_wait_rc = 0, i; 4022 struct fc_vport_identifiers vport_id; 4023 struct fc_vport *new_fc_vport; 4024 struct Scsi_Host *shost; 4025 struct lpfc_vport *vport; 4026 uint16_t offset = 0; 4027 uint8_t *vport_buff; 4028 struct lpfc_dmabuf *mp; 4029 uint32_t byte_count = 0; 4030 4031 pmb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 4032 if (!pmb) { 4033 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 4034 "0542 lpfc_create_static_vport failed to" 4035 " allocate mailbox memory\n"); 4036 return; 4037 } 4038 memset(pmb, 0, sizeof(LPFC_MBOXQ_t)); 4039 mb = &pmb->u.mb; 4040 4041 vport_info = kzalloc(sizeof(struct static_vport_info), GFP_KERNEL); 4042 if (!vport_info) { 4043 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 4044 "0543 lpfc_create_static_vport failed to" 4045 " allocate vport_info\n"); 4046 mempool_free(pmb, phba->mbox_mem_pool); 4047 return; 4048 } 4049 4050 vport_buff = (uint8_t *) vport_info; 4051 do { 4052 /* While loop iteration forces a free dma buffer from 4053 * the previous loop because the mbox is reused and 4054 * the dump routine is a single-use construct. 4055 */ 4056 if (pmb->ctx_buf) { 4057 mp = pmb->ctx_buf; 4058 lpfc_mbuf_free(phba, mp->virt, mp->phys); 4059 kfree(mp); 4060 pmb->ctx_buf = NULL; 4061 } 4062 if (lpfc_dump_static_vport(phba, pmb, offset)) 4063 goto out; 4064 4065 pmb->vport = phba->pport; 4066 mbx_wait_rc = lpfc_sli_issue_mbox_wait(phba, pmb, 4067 LPFC_MBOX_TMO); 4068 4069 if ((mbx_wait_rc != MBX_SUCCESS) || mb->mbxStatus) { 4070 lpfc_printf_log(phba, KERN_WARNING, LOG_INIT, 4071 "0544 lpfc_create_static_vport failed to" 4072 " issue dump mailbox command ret 0x%x " 4073 "status 0x%x\n", 4074 mbx_wait_rc, mb->mbxStatus); 4075 goto out; 4076 } 4077 4078 if (phba->sli_rev == LPFC_SLI_REV4) { 4079 byte_count = pmb->u.mqe.un.mb_words[5]; 4080 mp = pmb->ctx_buf; 4081 if (byte_count > sizeof(struct static_vport_info) - 4082 offset) 4083 byte_count = sizeof(struct static_vport_info) 4084 - offset; 4085 memcpy(vport_buff + offset, mp->virt, byte_count); 4086 offset += byte_count; 4087 } else { 4088 if (mb->un.varDmp.word_cnt > 4089 sizeof(struct static_vport_info) - offset) 4090 mb->un.varDmp.word_cnt = 4091 sizeof(struct static_vport_info) 4092 - offset; 4093 byte_count = mb->un.varDmp.word_cnt; 4094 lpfc_sli_pcimem_bcopy(((uint8_t *)mb) + DMP_RSP_OFFSET, 4095 vport_buff + offset, 4096 byte_count); 4097 4098 offset += byte_count; 4099 } 4100 4101 } while (byte_count && 4102 offset < sizeof(struct static_vport_info)); 4103 4104 4105 if ((le32_to_cpu(vport_info->signature) != VPORT_INFO_SIG) || 4106 ((le32_to_cpu(vport_info->rev) & VPORT_INFO_REV_MASK) 4107 != VPORT_INFO_REV)) { 4108 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 4109 "0545 lpfc_create_static_vport bad" 4110 " information header 0x%x 0x%x\n", 4111 le32_to_cpu(vport_info->signature), 4112 le32_to_cpu(vport_info->rev) & 4113 VPORT_INFO_REV_MASK); 4114 4115 goto out; 4116 } 4117 4118 shost = lpfc_shost_from_vport(phba->pport); 4119 4120 for (i = 0; i < MAX_STATIC_VPORT_COUNT; i++) { 4121 memset(&vport_id, 0, sizeof(vport_id)); 4122 vport_id.port_name = wwn_to_u64(vport_info->vport_list[i].wwpn); 4123 vport_id.node_name = wwn_to_u64(vport_info->vport_list[i].wwnn); 4124 if (!vport_id.port_name || !vport_id.node_name) 4125 continue; 4126 4127 vport_id.roles = FC_PORT_ROLE_FCP_INITIATOR; 4128 vport_id.vport_type = FC_PORTTYPE_NPIV; 4129 vport_id.disable = false; 4130 new_fc_vport = fc_vport_create(shost, 0, &vport_id); 4131 4132 if (!new_fc_vport) { 4133 lpfc_printf_log(phba, KERN_WARNING, LOG_INIT, 4134 "0546 lpfc_create_static_vport failed to" 4135 " create vport\n"); 4136 continue; 4137 } 4138 4139 vport = *(struct lpfc_vport **)new_fc_vport->dd_data; 4140 vport->vport_flag |= STATIC_VPORT; 4141 } 4142 4143 out: 4144 kfree(vport_info); 4145 if (mbx_wait_rc != MBX_TIMEOUT) 4146 lpfc_mbox_rsrc_cleanup(phba, pmb, MBOX_THD_UNLOCKED); 4147 } 4148 4149 /* 4150 * This routine handles processing a Fabric REG_LOGIN mailbox 4151 * command upon completion. It is setup in the LPFC_MBOXQ 4152 * as the completion routine when the command is 4153 * handed off to the SLI layer. 4154 */ 4155 void 4156 lpfc_mbx_cmpl_fabric_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 4157 { 4158 struct lpfc_vport *vport = pmb->vport; 4159 MAILBOX_t *mb = &pmb->u.mb; 4160 struct lpfc_nodelist *ndlp = pmb->ctx_ndlp; 4161 4162 pmb->ctx_ndlp = NULL; 4163 4164 if (mb->mbxStatus) { 4165 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 4166 "0258 Register Fabric login error: 0x%x\n", 4167 mb->mbxStatus); 4168 lpfc_mbox_rsrc_cleanup(phba, pmb, MBOX_THD_UNLOCKED); 4169 if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) { 4170 /* FLOGI failed, use loop map to make discovery list */ 4171 lpfc_disc_list_loopmap(vport); 4172 4173 /* Start discovery */ 4174 lpfc_disc_start(vport); 4175 /* Decrement the reference count to ndlp after the 4176 * reference to the ndlp are done. 4177 */ 4178 lpfc_nlp_put(ndlp); 4179 return; 4180 } 4181 4182 lpfc_vport_set_state(vport, FC_VPORT_FAILED); 4183 /* Decrement the reference count to ndlp after the reference 4184 * to the ndlp are done. 4185 */ 4186 lpfc_nlp_put(ndlp); 4187 return; 4188 } 4189 4190 if (phba->sli_rev < LPFC_SLI_REV4) 4191 ndlp->nlp_rpi = mb->un.varWords[0]; 4192 ndlp->nlp_flag |= NLP_RPI_REGISTERED; 4193 ndlp->nlp_type |= NLP_FABRIC; 4194 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE); 4195 4196 if (vport->port_state == LPFC_FABRIC_CFG_LINK) { 4197 /* when physical port receive logo donot start 4198 * vport discovery */ 4199 if (!test_and_clear_bit(FC_LOGO_RCVD_DID_CHNG, &vport->fc_flag)) 4200 lpfc_start_fdiscs(phba); 4201 lpfc_do_scr_ns_plogi(phba, vport); 4202 } 4203 4204 lpfc_mbox_rsrc_cleanup(phba, pmb, MBOX_THD_UNLOCKED); 4205 4206 /* Drop the reference count from the mbox at the end after 4207 * all the current reference to the ndlp have been done. 4208 */ 4209 lpfc_nlp_put(ndlp); 4210 return; 4211 } 4212 4213 /* 4214 * This routine will issue a GID_FT for each FC4 Type supported 4215 * by the driver. ALL GID_FTs must complete before discovery is started. 4216 */ 4217 int 4218 lpfc_issue_gidft(struct lpfc_vport *vport) 4219 { 4220 /* Good status, issue CT Request to NameServer */ 4221 if ((vport->cfg_enable_fc4_type == LPFC_ENABLE_BOTH) || 4222 (vport->cfg_enable_fc4_type == LPFC_ENABLE_FCP)) { 4223 if (lpfc_ns_cmd(vport, SLI_CTNS_GID_FT, 0, SLI_CTPT_FCP)) { 4224 /* Cannot issue NameServer FCP Query, so finish up 4225 * discovery 4226 */ 4227 lpfc_printf_vlog(vport, KERN_ERR, 4228 LOG_TRACE_EVENT, 4229 "0604 %s FC TYPE %x %s\n", 4230 "Failed to issue GID_FT to ", 4231 FC_TYPE_FCP, 4232 "Finishing discovery."); 4233 return 0; 4234 } 4235 vport->gidft_inp++; 4236 } 4237 4238 if ((vport->cfg_enable_fc4_type == LPFC_ENABLE_BOTH) || 4239 (vport->cfg_enable_fc4_type == LPFC_ENABLE_NVME)) { 4240 if (lpfc_ns_cmd(vport, SLI_CTNS_GID_FT, 0, SLI_CTPT_NVME)) { 4241 /* Cannot issue NameServer NVME Query, so finish up 4242 * discovery 4243 */ 4244 lpfc_printf_vlog(vport, KERN_ERR, 4245 LOG_TRACE_EVENT, 4246 "0605 %s FC_TYPE %x %s %d\n", 4247 "Failed to issue GID_FT to ", 4248 FC_TYPE_NVME, 4249 "Finishing discovery: gidftinp ", 4250 vport->gidft_inp); 4251 if (vport->gidft_inp == 0) 4252 return 0; 4253 } else 4254 vport->gidft_inp++; 4255 } 4256 return vport->gidft_inp; 4257 } 4258 4259 /** 4260 * lpfc_issue_gidpt - issue a GID_PT for all N_Ports 4261 * @vport: The virtual port for which this call is being executed. 4262 * 4263 * This routine will issue a GID_PT to get a list of all N_Ports 4264 * 4265 * Return value : 4266 * 0 - Failure to issue a GID_PT 4267 * 1 - GID_PT issued 4268 **/ 4269 int 4270 lpfc_issue_gidpt(struct lpfc_vport *vport) 4271 { 4272 /* Good status, issue CT Request to NameServer */ 4273 if (lpfc_ns_cmd(vport, SLI_CTNS_GID_PT, 0, GID_PT_N_PORT)) { 4274 /* Cannot issue NameServer FCP Query, so finish up 4275 * discovery 4276 */ 4277 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 4278 "0606 %s Port TYPE %x %s\n", 4279 "Failed to issue GID_PT to ", 4280 GID_PT_N_PORT, 4281 "Finishing discovery."); 4282 return 0; 4283 } 4284 vport->gidft_inp++; 4285 return 1; 4286 } 4287 4288 /* 4289 * This routine handles processing a NameServer REG_LOGIN mailbox 4290 * command upon completion. It is setup in the LPFC_MBOXQ 4291 * as the completion routine when the command is 4292 * handed off to the SLI layer. 4293 */ 4294 void 4295 lpfc_mbx_cmpl_ns_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 4296 { 4297 MAILBOX_t *mb = &pmb->u.mb; 4298 struct lpfc_nodelist *ndlp = pmb->ctx_ndlp; 4299 struct lpfc_vport *vport = pmb->vport; 4300 int rc; 4301 4302 pmb->ctx_ndlp = NULL; 4303 vport->gidft_inp = 0; 4304 4305 if (mb->mbxStatus) { 4306 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 4307 "0260 Register NameServer error: 0x%x\n", 4308 mb->mbxStatus); 4309 4310 out: 4311 /* decrement the node reference count held for this 4312 * callback function. 4313 */ 4314 lpfc_nlp_put(ndlp); 4315 lpfc_mbox_rsrc_cleanup(phba, pmb, MBOX_THD_UNLOCKED); 4316 4317 /* If the node is not registered with the scsi or nvme 4318 * transport, remove the fabric node. The failed reg_login 4319 * is terminal and forces the removal of the last node 4320 * reference. 4321 */ 4322 if (!(ndlp->fc4_xpt_flags & (SCSI_XPT_REGD | NVME_XPT_REGD))) { 4323 spin_lock_irq(&ndlp->lock); 4324 ndlp->nlp_flag &= ~NLP_NPR_2B_DISC; 4325 spin_unlock_irq(&ndlp->lock); 4326 lpfc_nlp_put(ndlp); 4327 } 4328 4329 if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) { 4330 /* 4331 * RegLogin failed, use loop map to make discovery 4332 * list 4333 */ 4334 lpfc_disc_list_loopmap(vport); 4335 4336 /* Start discovery */ 4337 lpfc_disc_start(vport); 4338 return; 4339 } 4340 lpfc_vport_set_state(vport, FC_VPORT_FAILED); 4341 return; 4342 } 4343 4344 if (phba->sli_rev < LPFC_SLI_REV4) 4345 ndlp->nlp_rpi = mb->un.varWords[0]; 4346 ndlp->nlp_flag |= NLP_RPI_REGISTERED; 4347 ndlp->nlp_type |= NLP_FABRIC; 4348 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE); 4349 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE | LOG_DISCOVERY, 4350 "0003 rpi:%x DID:%x flg:%x %d x%px\n", 4351 ndlp->nlp_rpi, ndlp->nlp_DID, ndlp->nlp_flag, 4352 kref_read(&ndlp->kref), 4353 ndlp); 4354 4355 if (vport->port_state < LPFC_VPORT_READY) { 4356 /* Link up discovery requires Fabric registration. */ 4357 lpfc_ns_cmd(vport, SLI_CTNS_RNN_ID, 0, 0); 4358 lpfc_ns_cmd(vport, SLI_CTNS_RSNN_NN, 0, 0); 4359 lpfc_ns_cmd(vport, SLI_CTNS_RSPN_ID, 0, 0); 4360 lpfc_ns_cmd(vport, SLI_CTNS_RFT_ID, 0, 0); 4361 4362 if ((vport->cfg_enable_fc4_type == LPFC_ENABLE_BOTH) || 4363 (vport->cfg_enable_fc4_type == LPFC_ENABLE_FCP)) 4364 lpfc_ns_cmd(vport, SLI_CTNS_RFF_ID, 0, FC_TYPE_FCP); 4365 4366 if ((vport->cfg_enable_fc4_type == LPFC_ENABLE_BOTH) || 4367 (vport->cfg_enable_fc4_type == LPFC_ENABLE_NVME)) 4368 lpfc_ns_cmd(vport, SLI_CTNS_RFF_ID, 0, 4369 FC_TYPE_NVME); 4370 4371 /* Issue SCR just before NameServer GID_FT Query */ 4372 lpfc_issue_els_scr(vport, 0); 4373 4374 /* Link was bounced or a Fabric LOGO occurred. Start EDC 4375 * with initial FW values provided the congestion mode is 4376 * not off. Note that signals may or may not be supported 4377 * by the adapter but FPIN is provided by default for 1 4378 * or both missing signals support. 4379 */ 4380 if (phba->cmf_active_mode != LPFC_CFG_OFF) { 4381 phba->cgn_reg_fpin = phba->cgn_init_reg_fpin; 4382 phba->cgn_reg_signal = phba->cgn_init_reg_signal; 4383 rc = lpfc_issue_els_edc(vport, 0); 4384 lpfc_printf_log(phba, KERN_INFO, 4385 LOG_INIT | LOG_ELS | LOG_DISCOVERY, 4386 "4220 Issue EDC status x%x Data x%x\n", 4387 rc, phba->cgn_init_reg_signal); 4388 } else if (phba->lmt & LMT_64Gb) { 4389 /* may send link fault capability descriptor */ 4390 lpfc_issue_els_edc(vport, 0); 4391 } else { 4392 lpfc_issue_els_rdf(vport, 0); 4393 } 4394 } 4395 4396 vport->fc_ns_retry = 0; 4397 if (lpfc_issue_gidft(vport) == 0) 4398 goto out; 4399 4400 /* 4401 * At this point in time we may need to wait for multiple 4402 * SLI_CTNS_GID_FT CT commands to complete before we start discovery. 4403 * 4404 * decrement the node reference count held for this 4405 * callback function. 4406 */ 4407 lpfc_nlp_put(ndlp); 4408 lpfc_mbox_rsrc_cleanup(phba, pmb, MBOX_THD_UNLOCKED); 4409 return; 4410 } 4411 4412 /* 4413 * This routine handles processing a Fabric Controller REG_LOGIN mailbox 4414 * command upon completion. It is setup in the LPFC_MBOXQ 4415 * as the completion routine when the command is handed off to the SLI layer. 4416 */ 4417 void 4418 lpfc_mbx_cmpl_fc_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 4419 { 4420 struct lpfc_vport *vport = pmb->vport; 4421 MAILBOX_t *mb = &pmb->u.mb; 4422 struct lpfc_nodelist *ndlp = pmb->ctx_ndlp; 4423 4424 pmb->ctx_ndlp = NULL; 4425 if (mb->mbxStatus) { 4426 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 4427 "0933 %s: Register FC login error: 0x%x\n", 4428 __func__, mb->mbxStatus); 4429 goto out; 4430 } 4431 4432 lpfc_check_nlp_post_devloss(vport, ndlp); 4433 4434 if (phba->sli_rev < LPFC_SLI_REV4) 4435 ndlp->nlp_rpi = mb->un.varWords[0]; 4436 4437 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE, 4438 "0934 %s: Complete FC x%x RegLogin rpi x%x ste x%x\n", 4439 __func__, ndlp->nlp_DID, ndlp->nlp_rpi, 4440 ndlp->nlp_state); 4441 4442 ndlp->nlp_flag |= NLP_RPI_REGISTERED; 4443 ndlp->nlp_flag &= ~NLP_REG_LOGIN_SEND; 4444 ndlp->nlp_type |= NLP_FABRIC; 4445 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE); 4446 4447 out: 4448 lpfc_mbox_rsrc_cleanup(phba, pmb, MBOX_THD_UNLOCKED); 4449 4450 /* Drop the reference count from the mbox at the end after 4451 * all the current reference to the ndlp have been done. 4452 */ 4453 lpfc_nlp_put(ndlp); 4454 } 4455 4456 static void 4457 lpfc_register_remote_port(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) 4458 { 4459 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 4460 struct fc_rport *rport; 4461 struct lpfc_rport_data *rdata; 4462 struct fc_rport_identifiers rport_ids; 4463 struct lpfc_hba *phba = vport->phba; 4464 unsigned long flags; 4465 4466 if (vport->cfg_enable_fc4_type == LPFC_ENABLE_NVME) 4467 return; 4468 4469 /* Remote port has reappeared. Re-register w/ FC transport */ 4470 rport_ids.node_name = wwn_to_u64(ndlp->nlp_nodename.u.wwn); 4471 rport_ids.port_name = wwn_to_u64(ndlp->nlp_portname.u.wwn); 4472 rport_ids.port_id = ndlp->nlp_DID; 4473 rport_ids.roles = FC_RPORT_ROLE_UNKNOWN; 4474 4475 4476 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT, 4477 "rport add: did:x%x flg:x%x type x%x", 4478 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type); 4479 4480 /* Don't add the remote port if unloading. */ 4481 if (test_bit(FC_UNLOADING, &vport->load_flag)) 4482 return; 4483 4484 ndlp->rport = rport = fc_remote_port_add(shost, 0, &rport_ids); 4485 if (!rport) { 4486 dev_printk(KERN_WARNING, &phba->pcidev->dev, 4487 "Warning: fc_remote_port_add failed\n"); 4488 return; 4489 } 4490 4491 /* Successful port add. Complete initializing node data */ 4492 rport->maxframe_size = ndlp->nlp_maxframe; 4493 rport->supported_classes = ndlp->nlp_class_sup; 4494 rdata = rport->dd_data; 4495 rdata->pnode = lpfc_nlp_get(ndlp); 4496 if (!rdata->pnode) { 4497 dev_warn(&phba->pcidev->dev, 4498 "Warning - node ref failed. Unreg rport\n"); 4499 fc_remote_port_delete(rport); 4500 ndlp->rport = NULL; 4501 return; 4502 } 4503 4504 spin_lock_irqsave(&ndlp->lock, flags); 4505 ndlp->fc4_xpt_flags |= SCSI_XPT_REGD; 4506 spin_unlock_irqrestore(&ndlp->lock, flags); 4507 4508 if (ndlp->nlp_type & NLP_FCP_TARGET) 4509 rport_ids.roles |= FC_PORT_ROLE_FCP_TARGET; 4510 if (ndlp->nlp_type & NLP_FCP_INITIATOR) 4511 rport_ids.roles |= FC_PORT_ROLE_FCP_INITIATOR; 4512 if (ndlp->nlp_type & NLP_NVME_INITIATOR) 4513 rport_ids.roles |= FC_PORT_ROLE_NVME_INITIATOR; 4514 if (ndlp->nlp_type & NLP_NVME_TARGET) 4515 rport_ids.roles |= FC_PORT_ROLE_NVME_TARGET; 4516 if (ndlp->nlp_type & NLP_NVME_DISCOVERY) 4517 rport_ids.roles |= FC_PORT_ROLE_NVME_DISCOVERY; 4518 4519 if (rport_ids.roles != FC_RPORT_ROLE_UNKNOWN) 4520 fc_remote_port_rolechg(rport, rport_ids.roles); 4521 4522 lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_NODE, 4523 "3183 %s rport x%px DID x%x, role x%x refcnt %d\n", 4524 __func__, rport, rport->port_id, rport->roles, 4525 kref_read(&ndlp->kref)); 4526 4527 if ((rport->scsi_target_id != -1) && 4528 (rport->scsi_target_id < LPFC_MAX_TARGET)) { 4529 ndlp->nlp_sid = rport->scsi_target_id; 4530 } 4531 4532 return; 4533 } 4534 4535 static void 4536 lpfc_unregister_remote_port(struct lpfc_nodelist *ndlp) 4537 { 4538 struct fc_rport *rport = ndlp->rport; 4539 struct lpfc_vport *vport = ndlp->vport; 4540 4541 if (vport->cfg_enable_fc4_type == LPFC_ENABLE_NVME) 4542 return; 4543 4544 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT, 4545 "rport delete: did:x%x flg:x%x type x%x", 4546 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type); 4547 4548 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE, 4549 "3184 rport unregister x%06x, rport x%px " 4550 "xptflg x%x refcnt %d\n", 4551 ndlp->nlp_DID, rport, ndlp->fc4_xpt_flags, 4552 kref_read(&ndlp->kref)); 4553 4554 fc_remote_port_delete(rport); 4555 lpfc_nlp_put(ndlp); 4556 } 4557 4558 static void 4559 lpfc_nlp_counters(struct lpfc_vport *vport, int state, int count) 4560 { 4561 switch (state) { 4562 case NLP_STE_UNUSED_NODE: 4563 atomic_add(count, &vport->fc_unused_cnt); 4564 break; 4565 case NLP_STE_PLOGI_ISSUE: 4566 atomic_add(count, &vport->fc_plogi_cnt); 4567 break; 4568 case NLP_STE_ADISC_ISSUE: 4569 atomic_add(count, &vport->fc_adisc_cnt); 4570 break; 4571 case NLP_STE_REG_LOGIN_ISSUE: 4572 atomic_add(count, &vport->fc_reglogin_cnt); 4573 break; 4574 case NLP_STE_PRLI_ISSUE: 4575 atomic_add(count, &vport->fc_prli_cnt); 4576 break; 4577 case NLP_STE_UNMAPPED_NODE: 4578 atomic_add(count, &vport->fc_unmap_cnt); 4579 break; 4580 case NLP_STE_MAPPED_NODE: 4581 atomic_add(count, &vport->fc_map_cnt); 4582 break; 4583 case NLP_STE_NPR_NODE: 4584 if (!atomic_read(&vport->fc_npr_cnt) && count == -1) 4585 atomic_set(&vport->fc_npr_cnt, 0); 4586 else 4587 atomic_add(count, &vport->fc_npr_cnt); 4588 break; 4589 } 4590 } 4591 4592 /* Register a node with backend if not already done */ 4593 void 4594 lpfc_nlp_reg_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) 4595 { 4596 unsigned long iflags; 4597 4598 lpfc_check_nlp_post_devloss(vport, ndlp); 4599 4600 spin_lock_irqsave(&ndlp->lock, iflags); 4601 if (ndlp->fc4_xpt_flags & NLP_XPT_REGD) { 4602 /* Already registered with backend, trigger rescan */ 4603 spin_unlock_irqrestore(&ndlp->lock, iflags); 4604 4605 if (ndlp->fc4_xpt_flags & NVME_XPT_REGD && 4606 ndlp->nlp_type & (NLP_NVME_TARGET | NLP_NVME_DISCOVERY)) { 4607 lpfc_nvme_rescan_port(vport, ndlp); 4608 } 4609 return; 4610 } 4611 4612 ndlp->fc4_xpt_flags |= NLP_XPT_REGD; 4613 spin_unlock_irqrestore(&ndlp->lock, iflags); 4614 4615 if (lpfc_valid_xpt_node(ndlp)) { 4616 vport->phba->nport_event_cnt++; 4617 /* 4618 * Tell the fc transport about the port, if we haven't 4619 * already. If we have, and it's a scsi entity, be 4620 */ 4621 lpfc_register_remote_port(vport, ndlp); 4622 } 4623 4624 /* We are done if we do not have any NVME remote node */ 4625 if (!(ndlp->nlp_fc4_type & NLP_FC4_NVME)) 4626 return; 4627 4628 /* Notify the NVME transport of this new rport. */ 4629 if (vport->phba->sli_rev >= LPFC_SLI_REV4 && 4630 ndlp->nlp_fc4_type & NLP_FC4_NVME) { 4631 if (vport->phba->nvmet_support == 0) { 4632 /* Register this rport with the transport. 4633 * Only NVME Target Rports are registered with 4634 * the transport. 4635 */ 4636 if (ndlp->nlp_type & NLP_NVME_TARGET) { 4637 vport->phba->nport_event_cnt++; 4638 lpfc_nvme_register_port(vport, ndlp); 4639 } 4640 } else { 4641 /* Just take an NDLP ref count since the 4642 * target does not register rports. 4643 */ 4644 lpfc_nlp_get(ndlp); 4645 } 4646 } 4647 } 4648 4649 /* Unregister a node with backend if not already done */ 4650 void 4651 lpfc_nlp_unreg_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) 4652 { 4653 unsigned long iflags; 4654 4655 spin_lock_irqsave(&ndlp->lock, iflags); 4656 if (!(ndlp->fc4_xpt_flags & NLP_XPT_REGD)) { 4657 spin_unlock_irqrestore(&ndlp->lock, iflags); 4658 lpfc_printf_vlog(vport, KERN_INFO, 4659 LOG_ELS | LOG_NODE | LOG_DISCOVERY, 4660 "0999 %s Not regd: ndlp x%px rport x%px DID " 4661 "x%x FLG x%x XPT x%x\n", 4662 __func__, ndlp, ndlp->rport, ndlp->nlp_DID, 4663 ndlp->nlp_flag, ndlp->fc4_xpt_flags); 4664 return; 4665 } 4666 4667 ndlp->fc4_xpt_flags &= ~NLP_XPT_REGD; 4668 spin_unlock_irqrestore(&ndlp->lock, iflags); 4669 4670 if (ndlp->rport && 4671 ndlp->fc4_xpt_flags & SCSI_XPT_REGD) { 4672 vport->phba->nport_event_cnt++; 4673 lpfc_unregister_remote_port(ndlp); 4674 } else if (!ndlp->rport) { 4675 lpfc_printf_vlog(vport, KERN_INFO, 4676 LOG_ELS | LOG_NODE | LOG_DISCOVERY, 4677 "1999 %s NDLP in devloss x%px DID x%x FLG x%x" 4678 " XPT x%x refcnt %u\n", 4679 __func__, ndlp, ndlp->nlp_DID, ndlp->nlp_flag, 4680 ndlp->fc4_xpt_flags, 4681 kref_read(&ndlp->kref)); 4682 } 4683 4684 if (ndlp->fc4_xpt_flags & NVME_XPT_REGD) { 4685 vport->phba->nport_event_cnt++; 4686 if (vport->phba->nvmet_support == 0) { 4687 /* Start devloss if target. */ 4688 if (ndlp->nlp_type & NLP_NVME_TARGET) 4689 lpfc_nvme_unregister_port(vport, ndlp); 4690 } else { 4691 /* NVMET has no upcall. */ 4692 lpfc_nlp_put(ndlp); 4693 } 4694 } 4695 4696 } 4697 4698 /* 4699 * Adisc state change handling 4700 */ 4701 static void 4702 lpfc_handle_adisc_state(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 4703 int new_state) 4704 { 4705 switch (new_state) { 4706 /* 4707 * Any state to ADISC_ISSUE 4708 * Do nothing, adisc cmpl handling will trigger state changes 4709 */ 4710 case NLP_STE_ADISC_ISSUE: 4711 break; 4712 4713 /* 4714 * ADISC_ISSUE to mapped states 4715 * Trigger a registration with backend, it will be nop if 4716 * already registered 4717 */ 4718 case NLP_STE_UNMAPPED_NODE: 4719 ndlp->nlp_type |= NLP_FC_NODE; 4720 fallthrough; 4721 case NLP_STE_MAPPED_NODE: 4722 ndlp->nlp_flag &= ~NLP_NODEV_REMOVE; 4723 lpfc_nlp_reg_node(vport, ndlp); 4724 break; 4725 4726 /* 4727 * ADISC_ISSUE to non-mapped states 4728 * We are moving from ADISC_ISSUE to a non-mapped state because 4729 * ADISC failed, we would have skipped unregistering with 4730 * backend, attempt it now 4731 */ 4732 case NLP_STE_NPR_NODE: 4733 ndlp->nlp_flag &= ~NLP_RCV_PLOGI; 4734 fallthrough; 4735 default: 4736 lpfc_nlp_unreg_node(vport, ndlp); 4737 break; 4738 } 4739 4740 } 4741 4742 static void 4743 lpfc_nlp_state_cleanup(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 4744 int old_state, int new_state) 4745 { 4746 /* Trap ADISC changes here */ 4747 if (new_state == NLP_STE_ADISC_ISSUE || 4748 old_state == NLP_STE_ADISC_ISSUE) { 4749 lpfc_handle_adisc_state(vport, ndlp, new_state); 4750 return; 4751 } 4752 4753 if (new_state == NLP_STE_UNMAPPED_NODE) { 4754 ndlp->nlp_flag &= ~NLP_NODEV_REMOVE; 4755 ndlp->nlp_type |= NLP_FC_NODE; 4756 } 4757 if (new_state == NLP_STE_MAPPED_NODE) 4758 ndlp->nlp_flag &= ~NLP_NODEV_REMOVE; 4759 if (new_state == NLP_STE_NPR_NODE) 4760 ndlp->nlp_flag &= ~NLP_RCV_PLOGI; 4761 4762 /* Reg/Unreg for FCP and NVME Transport interface */ 4763 if ((old_state == NLP_STE_MAPPED_NODE || 4764 old_state == NLP_STE_UNMAPPED_NODE)) { 4765 /* For nodes marked for ADISC, Handle unreg in ADISC cmpl 4766 * if linkup. In linkdown do unreg_node 4767 */ 4768 if (!(ndlp->nlp_flag & NLP_NPR_ADISC) || 4769 !lpfc_is_link_up(vport->phba)) 4770 lpfc_nlp_unreg_node(vport, ndlp); 4771 } 4772 4773 if (new_state == NLP_STE_MAPPED_NODE || 4774 new_state == NLP_STE_UNMAPPED_NODE) 4775 lpfc_nlp_reg_node(vport, ndlp); 4776 4777 /* 4778 * If the node just added to Mapped list was an FCP target, 4779 * but the remote port registration failed or assigned a target 4780 * id outside the presentable range - move the node to the 4781 * Unmapped List. 4782 */ 4783 if ((new_state == NLP_STE_MAPPED_NODE) && 4784 (ndlp->nlp_type & NLP_FCP_TARGET) && 4785 (!ndlp->rport || 4786 ndlp->rport->scsi_target_id == -1 || 4787 ndlp->rport->scsi_target_id >= LPFC_MAX_TARGET)) { 4788 spin_lock_irq(&ndlp->lock); 4789 ndlp->nlp_flag |= NLP_TGT_NO_SCSIID; 4790 spin_unlock_irq(&ndlp->lock); 4791 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE); 4792 } 4793 } 4794 4795 static char * 4796 lpfc_nlp_state_name(char *buffer, size_t size, int state) 4797 { 4798 static char *states[] = { 4799 [NLP_STE_UNUSED_NODE] = "UNUSED", 4800 [NLP_STE_PLOGI_ISSUE] = "PLOGI", 4801 [NLP_STE_ADISC_ISSUE] = "ADISC", 4802 [NLP_STE_REG_LOGIN_ISSUE] = "REGLOGIN", 4803 [NLP_STE_PRLI_ISSUE] = "PRLI", 4804 [NLP_STE_LOGO_ISSUE] = "LOGO", 4805 [NLP_STE_UNMAPPED_NODE] = "UNMAPPED", 4806 [NLP_STE_MAPPED_NODE] = "MAPPED", 4807 [NLP_STE_NPR_NODE] = "NPR", 4808 }; 4809 4810 if (state < NLP_STE_MAX_STATE && states[state]) 4811 strscpy(buffer, states[state], size); 4812 else 4813 snprintf(buffer, size, "unknown (%d)", state); 4814 return buffer; 4815 } 4816 4817 void 4818 lpfc_nlp_set_state(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 4819 int state) 4820 { 4821 int old_state = ndlp->nlp_state; 4822 int node_dropped = ndlp->nlp_flag & NLP_DROPPED; 4823 char name1[16], name2[16]; 4824 unsigned long iflags; 4825 4826 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE, 4827 "0904 NPort state transition x%06x, %s -> %s\n", 4828 ndlp->nlp_DID, 4829 lpfc_nlp_state_name(name1, sizeof(name1), old_state), 4830 lpfc_nlp_state_name(name2, sizeof(name2), state)); 4831 4832 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE, 4833 "node statechg did:x%x old:%d ste:%d", 4834 ndlp->nlp_DID, old_state, state); 4835 4836 if (node_dropped && old_state == NLP_STE_UNUSED_NODE && 4837 state != NLP_STE_UNUSED_NODE) { 4838 ndlp->nlp_flag &= ~NLP_DROPPED; 4839 lpfc_nlp_get(ndlp); 4840 } 4841 4842 if (old_state == NLP_STE_NPR_NODE && 4843 state != NLP_STE_NPR_NODE) 4844 lpfc_cancel_retry_delay_tmo(vport, ndlp); 4845 if (old_state == NLP_STE_UNMAPPED_NODE) { 4846 ndlp->nlp_flag &= ~NLP_TGT_NO_SCSIID; 4847 ndlp->nlp_type &= ~NLP_FC_NODE; 4848 } 4849 4850 if (list_empty(&ndlp->nlp_listp)) { 4851 spin_lock_irqsave(&vport->fc_nodes_list_lock, iflags); 4852 list_add_tail(&ndlp->nlp_listp, &vport->fc_nodes); 4853 spin_unlock_irqrestore(&vport->fc_nodes_list_lock, iflags); 4854 } else if (old_state) 4855 lpfc_nlp_counters(vport, old_state, -1); 4856 4857 ndlp->nlp_state = state; 4858 lpfc_nlp_counters(vport, state, 1); 4859 lpfc_nlp_state_cleanup(vport, ndlp, old_state, state); 4860 } 4861 4862 void 4863 lpfc_enqueue_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) 4864 { 4865 unsigned long iflags; 4866 4867 if (list_empty(&ndlp->nlp_listp)) { 4868 spin_lock_irqsave(&vport->fc_nodes_list_lock, iflags); 4869 list_add_tail(&ndlp->nlp_listp, &vport->fc_nodes); 4870 spin_unlock_irqrestore(&vport->fc_nodes_list_lock, iflags); 4871 } 4872 } 4873 4874 void 4875 lpfc_dequeue_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) 4876 { 4877 unsigned long iflags; 4878 4879 lpfc_cancel_retry_delay_tmo(vport, ndlp); 4880 if (ndlp->nlp_state && !list_empty(&ndlp->nlp_listp)) 4881 lpfc_nlp_counters(vport, ndlp->nlp_state, -1); 4882 spin_lock_irqsave(&vport->fc_nodes_list_lock, iflags); 4883 list_del_init(&ndlp->nlp_listp); 4884 spin_unlock_irqrestore(&vport->fc_nodes_list_lock, iflags); 4885 lpfc_nlp_state_cleanup(vport, ndlp, ndlp->nlp_state, 4886 NLP_STE_UNUSED_NODE); 4887 } 4888 4889 /** 4890 * lpfc_initialize_node - Initialize all fields of node object 4891 * @vport: Pointer to Virtual Port object. 4892 * @ndlp: Pointer to FC node object. 4893 * @did: FC_ID of the node. 4894 * 4895 * This function is always called when node object need to be initialized. 4896 * It initializes all the fields of the node object. Although the reference 4897 * to phba from @ndlp can be obtained indirectly through it's reference to 4898 * @vport, a direct reference to phba is taken here by @ndlp. This is due 4899 * to the life-span of the @ndlp might go beyond the existence of @vport as 4900 * the final release of ndlp is determined by its reference count. And, the 4901 * operation on @ndlp needs the reference to phba. 4902 **/ 4903 static inline void 4904 lpfc_initialize_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 4905 uint32_t did) 4906 { 4907 INIT_LIST_HEAD(&ndlp->els_retry_evt.evt_listp); 4908 INIT_LIST_HEAD(&ndlp->dev_loss_evt.evt_listp); 4909 timer_setup(&ndlp->nlp_delayfunc, lpfc_els_retry_delay, 0); 4910 INIT_LIST_HEAD(&ndlp->recovery_evt.evt_listp); 4911 4912 ndlp->nlp_DID = did; 4913 ndlp->vport = vport; 4914 ndlp->phba = vport->phba; 4915 ndlp->nlp_sid = NLP_NO_SID; 4916 ndlp->nlp_fc4_type = NLP_FC4_NONE; 4917 kref_init(&ndlp->kref); 4918 atomic_set(&ndlp->cmd_pending, 0); 4919 ndlp->cmd_qdepth = vport->cfg_tgt_queue_depth; 4920 ndlp->nlp_defer_did = NLP_EVT_NOTHING_PENDING; 4921 } 4922 4923 void 4924 lpfc_drop_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) 4925 { 4926 /* 4927 * Use of lpfc_drop_node and UNUSED list: lpfc_drop_node should 4928 * be used when lpfc wants to remove the "last" lpfc_nlp_put() to 4929 * release the ndlp from the vport when conditions are correct. 4930 */ 4931 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE) 4932 return; 4933 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNUSED_NODE); 4934 if (vport->phba->sli_rev == LPFC_SLI_REV4) { 4935 lpfc_cleanup_vports_rrqs(vport, ndlp); 4936 lpfc_unreg_rpi(vport, ndlp); 4937 } 4938 4939 /* NLP_DROPPED means another thread already removed the initial 4940 * reference from lpfc_nlp_init. If set, don't drop it again and 4941 * introduce an imbalance. 4942 */ 4943 spin_lock_irq(&ndlp->lock); 4944 if (!(ndlp->nlp_flag & NLP_DROPPED)) { 4945 ndlp->nlp_flag |= NLP_DROPPED; 4946 spin_unlock_irq(&ndlp->lock); 4947 lpfc_nlp_put(ndlp); 4948 return; 4949 } 4950 spin_unlock_irq(&ndlp->lock); 4951 } 4952 4953 /* 4954 * Start / ReStart rescue timer for Discovery / RSCN handling 4955 */ 4956 void 4957 lpfc_set_disctmo(struct lpfc_vport *vport) 4958 { 4959 struct lpfc_hba *phba = vport->phba; 4960 uint32_t tmo; 4961 4962 if (vport->port_state == LPFC_LOCAL_CFG_LINK) { 4963 /* For FAN, timeout should be greater than edtov */ 4964 tmo = (((phba->fc_edtov + 999) / 1000) + 1); 4965 } else { 4966 /* Normal discovery timeout should be > than ELS/CT timeout 4967 * FC spec states we need 3 * ratov for CT requests 4968 */ 4969 tmo = ((phba->fc_ratov * 3) + 3); 4970 } 4971 4972 4973 if (!timer_pending(&vport->fc_disctmo)) { 4974 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, 4975 "set disc timer: tmo:x%x state:x%x flg:x%x", 4976 tmo, vport->port_state, vport->fc_flag); 4977 } 4978 4979 mod_timer(&vport->fc_disctmo, jiffies + msecs_to_jiffies(1000 * tmo)); 4980 set_bit(FC_DISC_TMO, &vport->fc_flag); 4981 4982 /* Start Discovery Timer state <hba_state> */ 4983 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, 4984 "0247 Start Discovery Timer state x%x " 4985 "Data: x%x x%lx x%x x%x\n", 4986 vport->port_state, tmo, 4987 (unsigned long)&vport->fc_disctmo, 4988 atomic_read(&vport->fc_plogi_cnt), 4989 atomic_read(&vport->fc_adisc_cnt)); 4990 4991 return; 4992 } 4993 4994 /* 4995 * Cancel rescue timer for Discovery / RSCN handling 4996 */ 4997 int 4998 lpfc_can_disctmo(struct lpfc_vport *vport) 4999 { 5000 unsigned long iflags; 5001 5002 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, 5003 "can disc timer: state:x%x rtry:x%x flg:x%x", 5004 vport->port_state, vport->fc_ns_retry, vport->fc_flag); 5005 5006 /* Turn off discovery timer if its running */ 5007 if (test_bit(FC_DISC_TMO, &vport->fc_flag) || 5008 timer_pending(&vport->fc_disctmo)) { 5009 clear_bit(FC_DISC_TMO, &vport->fc_flag); 5010 del_timer_sync(&vport->fc_disctmo); 5011 spin_lock_irqsave(&vport->work_port_lock, iflags); 5012 vport->work_port_events &= ~WORKER_DISC_TMO; 5013 spin_unlock_irqrestore(&vport->work_port_lock, iflags); 5014 } 5015 5016 /* Cancel Discovery Timer state <hba_state> */ 5017 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, 5018 "0248 Cancel Discovery Timer state x%x " 5019 "Data: x%lx x%x x%x\n", 5020 vport->port_state, vport->fc_flag, 5021 atomic_read(&vport->fc_plogi_cnt), 5022 atomic_read(&vport->fc_adisc_cnt)); 5023 return 0; 5024 } 5025 5026 /* 5027 * Check specified ring for outstanding IOCB on the SLI queue 5028 * Return true if iocb matches the specified nport 5029 */ 5030 int 5031 lpfc_check_sli_ndlp(struct lpfc_hba *phba, 5032 struct lpfc_sli_ring *pring, 5033 struct lpfc_iocbq *iocb, 5034 struct lpfc_nodelist *ndlp) 5035 { 5036 struct lpfc_vport *vport = ndlp->vport; 5037 u8 ulp_command; 5038 u16 ulp_context; 5039 u32 remote_id; 5040 5041 if (iocb->vport != vport) 5042 return 0; 5043 5044 ulp_command = get_job_cmnd(phba, iocb); 5045 ulp_context = get_job_ulpcontext(phba, iocb); 5046 remote_id = get_job_els_rsp64_did(phba, iocb); 5047 5048 if (pring->ringno == LPFC_ELS_RING) { 5049 switch (ulp_command) { 5050 case CMD_GEN_REQUEST64_CR: 5051 if (iocb->ndlp == ndlp) 5052 return 1; 5053 fallthrough; 5054 case CMD_ELS_REQUEST64_CR: 5055 if (remote_id == ndlp->nlp_DID) 5056 return 1; 5057 fallthrough; 5058 case CMD_XMIT_ELS_RSP64_CX: 5059 if (iocb->ndlp == ndlp) 5060 return 1; 5061 } 5062 } else if (pring->ringno == LPFC_FCP_RING) { 5063 /* Skip match check if waiting to relogin to FCP target */ 5064 if ((ndlp->nlp_type & NLP_FCP_TARGET) && 5065 (ndlp->nlp_flag & NLP_DELAY_TMO)) { 5066 return 0; 5067 } 5068 if (ulp_context == ndlp->nlp_rpi) 5069 return 1; 5070 } 5071 return 0; 5072 } 5073 5074 static void 5075 __lpfc_dequeue_nport_iocbs(struct lpfc_hba *phba, 5076 struct lpfc_nodelist *ndlp, struct lpfc_sli_ring *pring, 5077 struct list_head *dequeue_list) 5078 { 5079 struct lpfc_iocbq *iocb, *next_iocb; 5080 5081 list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) { 5082 /* Check to see if iocb matches the nport */ 5083 if (lpfc_check_sli_ndlp(phba, pring, iocb, ndlp)) 5084 /* match, dequeue */ 5085 list_move_tail(&iocb->list, dequeue_list); 5086 } 5087 } 5088 5089 static void 5090 lpfc_sli3_dequeue_nport_iocbs(struct lpfc_hba *phba, 5091 struct lpfc_nodelist *ndlp, struct list_head *dequeue_list) 5092 { 5093 struct lpfc_sli *psli = &phba->sli; 5094 uint32_t i; 5095 5096 spin_lock_irq(&phba->hbalock); 5097 for (i = 0; i < psli->num_rings; i++) 5098 __lpfc_dequeue_nport_iocbs(phba, ndlp, &psli->sli3_ring[i], 5099 dequeue_list); 5100 spin_unlock_irq(&phba->hbalock); 5101 } 5102 5103 static void 5104 lpfc_sli4_dequeue_nport_iocbs(struct lpfc_hba *phba, 5105 struct lpfc_nodelist *ndlp, struct list_head *dequeue_list) 5106 { 5107 struct lpfc_sli_ring *pring; 5108 struct lpfc_queue *qp = NULL; 5109 5110 spin_lock_irq(&phba->hbalock); 5111 list_for_each_entry(qp, &phba->sli4_hba.lpfc_wq_list, wq_list) { 5112 pring = qp->pring; 5113 if (!pring) 5114 continue; 5115 spin_lock(&pring->ring_lock); 5116 __lpfc_dequeue_nport_iocbs(phba, ndlp, pring, dequeue_list); 5117 spin_unlock(&pring->ring_lock); 5118 } 5119 spin_unlock_irq(&phba->hbalock); 5120 } 5121 5122 /* 5123 * Free resources / clean up outstanding I/Os 5124 * associated with nlp_rpi in the LPFC_NODELIST entry. 5125 */ 5126 static int 5127 lpfc_no_rpi(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp) 5128 { 5129 LIST_HEAD(completions); 5130 5131 lpfc_fabric_abort_nport(ndlp); 5132 5133 /* 5134 * Everything that matches on txcmplq will be returned 5135 * by firmware with a no rpi error. 5136 */ 5137 if (ndlp->nlp_flag & NLP_RPI_REGISTERED) { 5138 if (phba->sli_rev != LPFC_SLI_REV4) 5139 lpfc_sli3_dequeue_nport_iocbs(phba, ndlp, &completions); 5140 else 5141 lpfc_sli4_dequeue_nport_iocbs(phba, ndlp, &completions); 5142 } 5143 5144 /* Cancel all the IOCBs from the completions list */ 5145 lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT, 5146 IOERR_SLI_ABORTED); 5147 5148 return 0; 5149 } 5150 5151 /** 5152 * lpfc_nlp_logo_unreg - Unreg mailbox completion handler before LOGO 5153 * @phba: Pointer to HBA context object. 5154 * @pmb: Pointer to mailbox object. 5155 * 5156 * This function will issue an ELS LOGO command after completing 5157 * the UNREG_RPI. 5158 **/ 5159 static void 5160 lpfc_nlp_logo_unreg(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 5161 { 5162 struct lpfc_vport *vport = pmb->vport; 5163 struct lpfc_nodelist *ndlp; 5164 5165 ndlp = pmb->ctx_ndlp; 5166 if (!ndlp) 5167 return; 5168 lpfc_issue_els_logo(vport, ndlp, 0); 5169 5170 /* Check to see if there are any deferred events to process */ 5171 if ((ndlp->nlp_flag & NLP_UNREG_INP) && 5172 (ndlp->nlp_defer_did != NLP_EVT_NOTHING_PENDING)) { 5173 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, 5174 "1434 UNREG cmpl deferred logo x%x " 5175 "on NPort x%x Data: x%x x%px\n", 5176 ndlp->nlp_rpi, ndlp->nlp_DID, 5177 ndlp->nlp_defer_did, ndlp); 5178 5179 ndlp->nlp_flag &= ~NLP_UNREG_INP; 5180 ndlp->nlp_defer_did = NLP_EVT_NOTHING_PENDING; 5181 lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0); 5182 } else { 5183 /* NLP_RELEASE_RPI is only set for SLI4 ports. */ 5184 if (ndlp->nlp_flag & NLP_RELEASE_RPI) { 5185 lpfc_sli4_free_rpi(vport->phba, ndlp->nlp_rpi); 5186 spin_lock_irq(&ndlp->lock); 5187 ndlp->nlp_flag &= ~NLP_RELEASE_RPI; 5188 ndlp->nlp_rpi = LPFC_RPI_ALLOC_ERROR; 5189 spin_unlock_irq(&ndlp->lock); 5190 } 5191 spin_lock_irq(&ndlp->lock); 5192 ndlp->nlp_flag &= ~NLP_UNREG_INP; 5193 spin_unlock_irq(&ndlp->lock); 5194 } 5195 5196 /* The node has an outstanding reference for the unreg. Now 5197 * that the LOGO action and cleanup are finished, release 5198 * resources. 5199 */ 5200 lpfc_nlp_put(ndlp); 5201 mempool_free(pmb, phba->mbox_mem_pool); 5202 } 5203 5204 /* 5205 * Sets the mailbox completion handler to be used for the 5206 * unreg_rpi command. The handler varies based on the state of 5207 * the port and what will be happening to the rpi next. 5208 */ 5209 static void 5210 lpfc_set_unreg_login_mbx_cmpl(struct lpfc_hba *phba, struct lpfc_vport *vport, 5211 struct lpfc_nodelist *ndlp, LPFC_MBOXQ_t *mbox) 5212 { 5213 unsigned long iflags; 5214 5215 /* Driver always gets a reference on the mailbox job 5216 * in support of async jobs. 5217 */ 5218 mbox->ctx_ndlp = lpfc_nlp_get(ndlp); 5219 if (!mbox->ctx_ndlp) 5220 return; 5221 5222 if (ndlp->nlp_flag & NLP_ISSUE_LOGO) { 5223 mbox->mbox_cmpl = lpfc_nlp_logo_unreg; 5224 5225 } else if (phba->sli_rev == LPFC_SLI_REV4 && 5226 !test_bit(FC_UNLOADING, &vport->load_flag) && 5227 (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) >= 5228 LPFC_SLI_INTF_IF_TYPE_2) && 5229 (kref_read(&ndlp->kref) > 0)) { 5230 mbox->mbox_cmpl = lpfc_sli4_unreg_rpi_cmpl_clr; 5231 } else { 5232 if (test_bit(FC_UNLOADING, &vport->load_flag)) { 5233 if (phba->sli_rev == LPFC_SLI_REV4) { 5234 spin_lock_irqsave(&ndlp->lock, iflags); 5235 ndlp->nlp_flag |= NLP_RELEASE_RPI; 5236 spin_unlock_irqrestore(&ndlp->lock, iflags); 5237 } 5238 } 5239 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl; 5240 } 5241 } 5242 5243 /* 5244 * Free rpi associated with LPFC_NODELIST entry. 5245 * This routine is called from lpfc_freenode(), when we are removing 5246 * a LPFC_NODELIST entry. It is also called if the driver initiates a 5247 * LOGO that completes successfully, and we are waiting to PLOGI back 5248 * to the remote NPort. In addition, it is called after we receive 5249 * and unsolicated ELS cmd, send back a rsp, the rsp completes and 5250 * we are waiting to PLOGI back to the remote NPort. 5251 */ 5252 int 5253 lpfc_unreg_rpi(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) 5254 { 5255 struct lpfc_hba *phba = vport->phba; 5256 LPFC_MBOXQ_t *mbox; 5257 int rc, acc_plogi = 1; 5258 uint16_t rpi; 5259 5260 if (ndlp->nlp_flag & NLP_RPI_REGISTERED || 5261 ndlp->nlp_flag & NLP_REG_LOGIN_SEND) { 5262 if (ndlp->nlp_flag & NLP_REG_LOGIN_SEND) 5263 lpfc_printf_vlog(vport, KERN_INFO, 5264 LOG_NODE | LOG_DISCOVERY, 5265 "3366 RPI x%x needs to be " 5266 "unregistered nlp_flag x%x " 5267 "did x%x\n", 5268 ndlp->nlp_rpi, ndlp->nlp_flag, 5269 ndlp->nlp_DID); 5270 5271 /* If there is already an UNREG in progress for this ndlp, 5272 * no need to queue up another one. 5273 */ 5274 if (ndlp->nlp_flag & NLP_UNREG_INP) { 5275 lpfc_printf_vlog(vport, KERN_INFO, 5276 LOG_NODE | LOG_DISCOVERY, 5277 "1436 unreg_rpi SKIP UNREG x%x on " 5278 "NPort x%x deferred x%x flg x%x " 5279 "Data: x%px\n", 5280 ndlp->nlp_rpi, ndlp->nlp_DID, 5281 ndlp->nlp_defer_did, 5282 ndlp->nlp_flag, ndlp); 5283 goto out; 5284 } 5285 5286 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 5287 if (mbox) { 5288 /* SLI4 ports require the physical rpi value. */ 5289 rpi = ndlp->nlp_rpi; 5290 if (phba->sli_rev == LPFC_SLI_REV4) 5291 rpi = phba->sli4_hba.rpi_ids[ndlp->nlp_rpi]; 5292 5293 lpfc_unreg_login(phba, vport->vpi, rpi, mbox); 5294 mbox->vport = vport; 5295 lpfc_set_unreg_login_mbx_cmpl(phba, vport, ndlp, mbox); 5296 if (!mbox->ctx_ndlp) { 5297 mempool_free(mbox, phba->mbox_mem_pool); 5298 return 1; 5299 } 5300 5301 if (mbox->mbox_cmpl == lpfc_sli4_unreg_rpi_cmpl_clr) 5302 /* 5303 * accept PLOGIs after unreg_rpi_cmpl 5304 */ 5305 acc_plogi = 0; 5306 if (((ndlp->nlp_DID & Fabric_DID_MASK) != 5307 Fabric_DID_MASK) && 5308 (!test_bit(FC_OFFLINE_MODE, &vport->fc_flag))) 5309 ndlp->nlp_flag |= NLP_UNREG_INP; 5310 5311 lpfc_printf_vlog(vport, KERN_INFO, 5312 LOG_NODE | LOG_DISCOVERY, 5313 "1433 unreg_rpi UNREG x%x on " 5314 "NPort x%x deferred flg x%x " 5315 "Data:x%px\n", 5316 ndlp->nlp_rpi, ndlp->nlp_DID, 5317 ndlp->nlp_flag, ndlp); 5318 5319 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT); 5320 if (rc == MBX_NOT_FINISHED) { 5321 ndlp->nlp_flag &= ~NLP_UNREG_INP; 5322 mempool_free(mbox, phba->mbox_mem_pool); 5323 acc_plogi = 1; 5324 lpfc_nlp_put(ndlp); 5325 } 5326 } else { 5327 lpfc_printf_vlog(vport, KERN_INFO, 5328 LOG_NODE | LOG_DISCOVERY, 5329 "1444 Failed to allocate mempool " 5330 "unreg_rpi UNREG x%x, " 5331 "DID x%x, flag x%x, " 5332 "ndlp x%px\n", 5333 ndlp->nlp_rpi, ndlp->nlp_DID, 5334 ndlp->nlp_flag, ndlp); 5335 5336 /* Because mempool_alloc failed, we 5337 * will issue a LOGO here and keep the rpi alive if 5338 * not unloading. 5339 */ 5340 if (!test_bit(FC_UNLOADING, &vport->load_flag)) { 5341 ndlp->nlp_flag &= ~NLP_UNREG_INP; 5342 lpfc_issue_els_logo(vport, ndlp, 0); 5343 ndlp->nlp_prev_state = ndlp->nlp_state; 5344 lpfc_nlp_set_state(vport, ndlp, 5345 NLP_STE_NPR_NODE); 5346 } 5347 5348 return 1; 5349 } 5350 lpfc_no_rpi(phba, ndlp); 5351 out: 5352 if (phba->sli_rev != LPFC_SLI_REV4) 5353 ndlp->nlp_rpi = 0; 5354 ndlp->nlp_flag &= ~NLP_RPI_REGISTERED; 5355 ndlp->nlp_flag &= ~NLP_NPR_ADISC; 5356 if (acc_plogi) 5357 ndlp->nlp_flag &= ~NLP_LOGO_ACC; 5358 return 1; 5359 } 5360 ndlp->nlp_flag &= ~NLP_LOGO_ACC; 5361 return 0; 5362 } 5363 5364 /** 5365 * lpfc_unreg_hba_rpis - Unregister rpis registered to the hba. 5366 * @phba: pointer to lpfc hba data structure. 5367 * 5368 * This routine is invoked to unregister all the currently registered RPIs 5369 * to the HBA. 5370 **/ 5371 void 5372 lpfc_unreg_hba_rpis(struct lpfc_hba *phba) 5373 { 5374 struct lpfc_vport **vports; 5375 struct lpfc_nodelist *ndlp; 5376 int i; 5377 unsigned long iflags; 5378 5379 vports = lpfc_create_vport_work_array(phba); 5380 if (!vports) { 5381 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 5382 "2884 Vport array allocation failed \n"); 5383 return; 5384 } 5385 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) { 5386 spin_lock_irqsave(&vports[i]->fc_nodes_list_lock, iflags); 5387 list_for_each_entry(ndlp, &vports[i]->fc_nodes, nlp_listp) { 5388 if (ndlp->nlp_flag & NLP_RPI_REGISTERED) { 5389 /* The mempool_alloc might sleep */ 5390 spin_unlock_irqrestore(&vports[i]->fc_nodes_list_lock, 5391 iflags); 5392 lpfc_unreg_rpi(vports[i], ndlp); 5393 spin_lock_irqsave(&vports[i]->fc_nodes_list_lock, 5394 iflags); 5395 } 5396 } 5397 spin_unlock_irqrestore(&vports[i]->fc_nodes_list_lock, iflags); 5398 } 5399 lpfc_destroy_vport_work_array(phba, vports); 5400 } 5401 5402 void 5403 lpfc_unreg_all_rpis(struct lpfc_vport *vport) 5404 { 5405 struct lpfc_hba *phba = vport->phba; 5406 LPFC_MBOXQ_t *mbox; 5407 int rc; 5408 5409 if (phba->sli_rev == LPFC_SLI_REV4) { 5410 lpfc_sli4_unreg_all_rpis(vport); 5411 return; 5412 } 5413 5414 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 5415 if (mbox) { 5416 lpfc_unreg_login(phba, vport->vpi, LPFC_UNREG_ALL_RPIS_VPORT, 5417 mbox); 5418 mbox->vport = vport; 5419 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl; 5420 mbox->ctx_ndlp = NULL; 5421 rc = lpfc_sli_issue_mbox_wait(phba, mbox, LPFC_MBOX_TMO); 5422 if (rc != MBX_TIMEOUT) 5423 mempool_free(mbox, phba->mbox_mem_pool); 5424 5425 if ((rc == MBX_TIMEOUT) || (rc == MBX_NOT_FINISHED)) 5426 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 5427 "1836 Could not issue " 5428 "unreg_login(all_rpis) status %d\n", 5429 rc); 5430 } 5431 } 5432 5433 void 5434 lpfc_unreg_default_rpis(struct lpfc_vport *vport) 5435 { 5436 struct lpfc_hba *phba = vport->phba; 5437 LPFC_MBOXQ_t *mbox; 5438 int rc; 5439 5440 /* Unreg DID is an SLI3 operation. */ 5441 if (phba->sli_rev > LPFC_SLI_REV3) 5442 return; 5443 5444 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 5445 if (mbox) { 5446 lpfc_unreg_did(phba, vport->vpi, LPFC_UNREG_ALL_DFLT_RPIS, 5447 mbox); 5448 mbox->vport = vport; 5449 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl; 5450 mbox->ctx_ndlp = NULL; 5451 rc = lpfc_sli_issue_mbox_wait(phba, mbox, LPFC_MBOX_TMO); 5452 if (rc != MBX_TIMEOUT) 5453 mempool_free(mbox, phba->mbox_mem_pool); 5454 5455 if ((rc == MBX_TIMEOUT) || (rc == MBX_NOT_FINISHED)) 5456 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 5457 "1815 Could not issue " 5458 "unreg_did (default rpis) status %d\n", 5459 rc); 5460 } 5461 } 5462 5463 /* 5464 * Free resources associated with LPFC_NODELIST entry 5465 * so it can be freed. 5466 */ 5467 static int 5468 lpfc_cleanup_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) 5469 { 5470 struct lpfc_hba *phba = vport->phba; 5471 LPFC_MBOXQ_t *mb, *nextmb; 5472 5473 /* Cleanup node for NPort <nlp_DID> */ 5474 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE, 5475 "0900 Cleanup node for NPort x%x " 5476 "Data: x%x x%x x%x\n", 5477 ndlp->nlp_DID, ndlp->nlp_flag, 5478 ndlp->nlp_state, ndlp->nlp_rpi); 5479 lpfc_dequeue_node(vport, ndlp); 5480 5481 /* Don't need to clean up REG_LOGIN64 cmds for Default RPI cleanup */ 5482 5483 /* cleanup any ndlp on mbox q waiting for reglogin cmpl */ 5484 if ((mb = phba->sli.mbox_active)) { 5485 if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) && 5486 !(mb->mbox_flag & LPFC_MBX_IMED_UNREG) && 5487 (ndlp == mb->ctx_ndlp)) { 5488 mb->ctx_ndlp = NULL; 5489 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl; 5490 } 5491 } 5492 5493 spin_lock_irq(&phba->hbalock); 5494 /* Cleanup REG_LOGIN completions which are not yet processed */ 5495 list_for_each_entry(mb, &phba->sli.mboxq_cmpl, list) { 5496 if ((mb->u.mb.mbxCommand != MBX_REG_LOGIN64) || 5497 (mb->mbox_flag & LPFC_MBX_IMED_UNREG) || 5498 (ndlp != mb->ctx_ndlp)) 5499 continue; 5500 5501 mb->ctx_ndlp = NULL; 5502 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl; 5503 } 5504 5505 list_for_each_entry_safe(mb, nextmb, &phba->sli.mboxq, list) { 5506 if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) && 5507 !(mb->mbox_flag & LPFC_MBX_IMED_UNREG) && 5508 (ndlp == mb->ctx_ndlp)) { 5509 list_del(&mb->list); 5510 lpfc_mbox_rsrc_cleanup(phba, mb, MBOX_THD_LOCKED); 5511 5512 /* Don't invoke lpfc_nlp_put. The driver is in 5513 * lpfc_nlp_release context. 5514 */ 5515 } 5516 } 5517 spin_unlock_irq(&phba->hbalock); 5518 5519 lpfc_els_abort(phba, ndlp); 5520 5521 spin_lock_irq(&ndlp->lock); 5522 ndlp->nlp_flag &= ~NLP_DELAY_TMO; 5523 spin_unlock_irq(&ndlp->lock); 5524 5525 ndlp->nlp_last_elscmd = 0; 5526 del_timer_sync(&ndlp->nlp_delayfunc); 5527 5528 list_del_init(&ndlp->els_retry_evt.evt_listp); 5529 list_del_init(&ndlp->dev_loss_evt.evt_listp); 5530 list_del_init(&ndlp->recovery_evt.evt_listp); 5531 lpfc_cleanup_vports_rrqs(vport, ndlp); 5532 5533 if (phba->sli_rev == LPFC_SLI_REV4) 5534 ndlp->nlp_flag |= NLP_RELEASE_RPI; 5535 5536 return 0; 5537 } 5538 5539 static int 5540 lpfc_matchdid(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 5541 uint32_t did) 5542 { 5543 D_ID mydid, ndlpdid, matchdid; 5544 5545 if (did == Bcast_DID) 5546 return 0; 5547 5548 /* First check for Direct match */ 5549 if (ndlp->nlp_DID == did) 5550 return 1; 5551 5552 /* Next check for area/domain identically equals 0 match */ 5553 mydid.un.word = vport->fc_myDID; 5554 if ((mydid.un.b.domain == 0) && (mydid.un.b.area == 0)) { 5555 return 0; 5556 } 5557 5558 matchdid.un.word = did; 5559 ndlpdid.un.word = ndlp->nlp_DID; 5560 if (matchdid.un.b.id == ndlpdid.un.b.id) { 5561 if ((mydid.un.b.domain == matchdid.un.b.domain) && 5562 (mydid.un.b.area == matchdid.un.b.area)) { 5563 /* This code is supposed to match the ID 5564 * for a private loop device that is 5565 * connect to fl_port. But we need to 5566 * check that the port did not just go 5567 * from pt2pt to fabric or we could end 5568 * up matching ndlp->nlp_DID 000001 to 5569 * fabric DID 0x20101 5570 */ 5571 if ((ndlpdid.un.b.domain == 0) && 5572 (ndlpdid.un.b.area == 0)) { 5573 if (ndlpdid.un.b.id && 5574 vport->phba->fc_topology == 5575 LPFC_TOPOLOGY_LOOP) 5576 return 1; 5577 } 5578 return 0; 5579 } 5580 5581 matchdid.un.word = ndlp->nlp_DID; 5582 if ((mydid.un.b.domain == ndlpdid.un.b.domain) && 5583 (mydid.un.b.area == ndlpdid.un.b.area)) { 5584 if ((matchdid.un.b.domain == 0) && 5585 (matchdid.un.b.area == 0)) { 5586 if (matchdid.un.b.id) 5587 return 1; 5588 } 5589 } 5590 } 5591 return 0; 5592 } 5593 5594 /* Search for a nodelist entry */ 5595 static struct lpfc_nodelist * 5596 __lpfc_findnode_did(struct lpfc_vport *vport, uint32_t did) 5597 { 5598 struct lpfc_nodelist *ndlp; 5599 uint32_t data1; 5600 5601 list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) { 5602 if (lpfc_matchdid(vport, ndlp, did)) { 5603 data1 = (((uint32_t)ndlp->nlp_state << 24) | 5604 ((uint32_t)ndlp->nlp_xri << 16) | 5605 ((uint32_t)ndlp->nlp_type << 8) 5606 ); 5607 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE_VERBOSE, 5608 "0929 FIND node DID " 5609 "Data: x%px x%x x%x x%x x%x x%px\n", 5610 ndlp, ndlp->nlp_DID, 5611 ndlp->nlp_flag, data1, ndlp->nlp_rpi, 5612 ndlp->active_rrqs_xri_bitmap); 5613 return ndlp; 5614 } 5615 } 5616 5617 /* FIND node did <did> NOT FOUND */ 5618 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE, 5619 "0932 FIND node did x%x NOT FOUND.\n", did); 5620 return NULL; 5621 } 5622 5623 struct lpfc_nodelist * 5624 lpfc_findnode_did(struct lpfc_vport *vport, uint32_t did) 5625 { 5626 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 5627 struct lpfc_nodelist *ndlp; 5628 unsigned long iflags; 5629 5630 spin_lock_irqsave(shost->host_lock, iflags); 5631 ndlp = __lpfc_findnode_did(vport, did); 5632 spin_unlock_irqrestore(shost->host_lock, iflags); 5633 return ndlp; 5634 } 5635 5636 struct lpfc_nodelist * 5637 lpfc_findnode_mapped(struct lpfc_vport *vport) 5638 { 5639 struct lpfc_nodelist *ndlp; 5640 uint32_t data1; 5641 unsigned long iflags; 5642 5643 spin_lock_irqsave(&vport->fc_nodes_list_lock, iflags); 5644 5645 list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) { 5646 if (ndlp->nlp_state == NLP_STE_UNMAPPED_NODE || 5647 ndlp->nlp_state == NLP_STE_MAPPED_NODE) { 5648 data1 = (((uint32_t)ndlp->nlp_state << 24) | 5649 ((uint32_t)ndlp->nlp_xri << 16) | 5650 ((uint32_t)ndlp->nlp_type << 8) | 5651 ((uint32_t)ndlp->nlp_rpi & 0xff)); 5652 spin_unlock_irqrestore(&vport->fc_nodes_list_lock, 5653 iflags); 5654 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE_VERBOSE, 5655 "2025 FIND node DID MAPPED " 5656 "Data: x%px x%x x%x x%x x%px\n", 5657 ndlp, ndlp->nlp_DID, 5658 ndlp->nlp_flag, data1, 5659 ndlp->active_rrqs_xri_bitmap); 5660 return ndlp; 5661 } 5662 } 5663 spin_unlock_irqrestore(&vport->fc_nodes_list_lock, iflags); 5664 5665 /* FIND node did <did> NOT FOUND */ 5666 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE, 5667 "2026 FIND mapped did NOT FOUND.\n"); 5668 return NULL; 5669 } 5670 5671 struct lpfc_nodelist * 5672 lpfc_setup_disc_node(struct lpfc_vport *vport, uint32_t did) 5673 { 5674 struct lpfc_nodelist *ndlp; 5675 5676 ndlp = lpfc_findnode_did(vport, did); 5677 if (!ndlp) { 5678 if (vport->phba->nvmet_support) 5679 return NULL; 5680 if (test_bit(FC_RSCN_MODE, &vport->fc_flag) && 5681 lpfc_rscn_payload_check(vport, did) == 0) 5682 return NULL; 5683 ndlp = lpfc_nlp_init(vport, did); 5684 if (!ndlp) 5685 return NULL; 5686 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE); 5687 5688 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, 5689 "6453 Setup New Node 2B_DISC x%x " 5690 "Data:x%x x%x x%lx\n", 5691 ndlp->nlp_DID, ndlp->nlp_flag, 5692 ndlp->nlp_state, vport->fc_flag); 5693 5694 spin_lock_irq(&ndlp->lock); 5695 ndlp->nlp_flag |= NLP_NPR_2B_DISC; 5696 spin_unlock_irq(&ndlp->lock); 5697 return ndlp; 5698 } 5699 5700 /* The NVME Target does not want to actively manage an rport. 5701 * The goal is to allow the target to reset its state and clear 5702 * pending IO in preparation for the initiator to recover. 5703 */ 5704 if (test_bit(FC_RSCN_MODE, &vport->fc_flag) && 5705 !test_bit(FC_NDISC_ACTIVE, &vport->fc_flag)) { 5706 if (lpfc_rscn_payload_check(vport, did)) { 5707 5708 /* Since this node is marked for discovery, 5709 * delay timeout is not needed. 5710 */ 5711 lpfc_cancel_retry_delay_tmo(vport, ndlp); 5712 5713 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, 5714 "6455 Setup RSCN Node 2B_DISC x%x " 5715 "Data:x%x x%x x%lx\n", 5716 ndlp->nlp_DID, ndlp->nlp_flag, 5717 ndlp->nlp_state, vport->fc_flag); 5718 5719 /* NVME Target mode waits until rport is known to be 5720 * impacted by the RSCN before it transitions. No 5721 * active management - just go to NPR provided the 5722 * node had a valid login. 5723 */ 5724 if (vport->phba->nvmet_support) 5725 return ndlp; 5726 5727 if (ndlp->nlp_state > NLP_STE_UNUSED_NODE && 5728 ndlp->nlp_state < NLP_STE_PRLI_ISSUE) { 5729 lpfc_disc_state_machine(vport, ndlp, NULL, 5730 NLP_EVT_DEVICE_RECOVERY); 5731 } 5732 5733 spin_lock_irq(&ndlp->lock); 5734 ndlp->nlp_flag |= NLP_NPR_2B_DISC; 5735 spin_unlock_irq(&ndlp->lock); 5736 } else { 5737 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, 5738 "6456 Skip Setup RSCN Node x%x " 5739 "Data:x%x x%x x%lx\n", 5740 ndlp->nlp_DID, ndlp->nlp_flag, 5741 ndlp->nlp_state, vport->fc_flag); 5742 ndlp = NULL; 5743 } 5744 } else { 5745 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, 5746 "6457 Setup Active Node 2B_DISC x%x " 5747 "Data:x%x x%x x%lx\n", 5748 ndlp->nlp_DID, ndlp->nlp_flag, 5749 ndlp->nlp_state, vport->fc_flag); 5750 5751 /* If the initiator received a PLOGI from this NPort or if the 5752 * initiator is already in the process of discovery on it, 5753 * there's no need to try to discover it again. 5754 */ 5755 if (ndlp->nlp_state == NLP_STE_ADISC_ISSUE || 5756 ndlp->nlp_state == NLP_STE_PLOGI_ISSUE || 5757 (!vport->phba->nvmet_support && 5758 ndlp->nlp_flag & NLP_RCV_PLOGI)) 5759 return NULL; 5760 5761 if (vport->phba->nvmet_support) 5762 return ndlp; 5763 5764 /* Moving to NPR state clears unsolicited flags and 5765 * allows for rediscovery 5766 */ 5767 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE); 5768 5769 spin_lock_irq(&ndlp->lock); 5770 ndlp->nlp_flag |= NLP_NPR_2B_DISC; 5771 spin_unlock_irq(&ndlp->lock); 5772 } 5773 return ndlp; 5774 } 5775 5776 /* Build a list of nodes to discover based on the loopmap */ 5777 void 5778 lpfc_disc_list_loopmap(struct lpfc_vport *vport) 5779 { 5780 struct lpfc_hba *phba = vport->phba; 5781 int j; 5782 uint32_t alpa, index; 5783 5784 if (!lpfc_is_link_up(phba)) 5785 return; 5786 5787 if (phba->fc_topology != LPFC_TOPOLOGY_LOOP) 5788 return; 5789 5790 /* Check for loop map present or not */ 5791 if (phba->alpa_map[0]) { 5792 for (j = 1; j <= phba->alpa_map[0]; j++) { 5793 alpa = phba->alpa_map[j]; 5794 if (((vport->fc_myDID & 0xff) == alpa) || (alpa == 0)) 5795 continue; 5796 lpfc_setup_disc_node(vport, alpa); 5797 } 5798 } else { 5799 /* No alpamap, so try all alpa's */ 5800 for (j = 0; j < FC_MAXLOOP; j++) { 5801 /* If cfg_scan_down is set, start from highest 5802 * ALPA (0xef) to lowest (0x1). 5803 */ 5804 if (vport->cfg_scan_down) 5805 index = j; 5806 else 5807 index = FC_MAXLOOP - j - 1; 5808 alpa = lpfcAlpaArray[index]; 5809 if ((vport->fc_myDID & 0xff) == alpa) 5810 continue; 5811 lpfc_setup_disc_node(vport, alpa); 5812 } 5813 } 5814 return; 5815 } 5816 5817 /* SLI3 only */ 5818 void 5819 lpfc_issue_clear_la(struct lpfc_hba *phba, struct lpfc_vport *vport) 5820 { 5821 LPFC_MBOXQ_t *mbox; 5822 struct lpfc_sli *psli = &phba->sli; 5823 struct lpfc_sli_ring *extra_ring = &psli->sli3_ring[LPFC_EXTRA_RING]; 5824 struct lpfc_sli_ring *fcp_ring = &psli->sli3_ring[LPFC_FCP_RING]; 5825 int rc; 5826 5827 /* 5828 * if it's not a physical port or if we already send 5829 * clear_la then don't send it. 5830 */ 5831 if ((phba->link_state >= LPFC_CLEAR_LA) || 5832 (vport->port_type != LPFC_PHYSICAL_PORT) || 5833 (phba->sli_rev == LPFC_SLI_REV4)) 5834 return; 5835 5836 /* Link up discovery */ 5837 if ((mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL)) != NULL) { 5838 phba->link_state = LPFC_CLEAR_LA; 5839 lpfc_clear_la(phba, mbox); 5840 mbox->mbox_cmpl = lpfc_mbx_cmpl_clear_la; 5841 mbox->vport = vport; 5842 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT); 5843 if (rc == MBX_NOT_FINISHED) { 5844 mempool_free(mbox, phba->mbox_mem_pool); 5845 lpfc_disc_flush_list(vport); 5846 extra_ring->flag &= ~LPFC_STOP_IOCB_EVENT; 5847 fcp_ring->flag &= ~LPFC_STOP_IOCB_EVENT; 5848 phba->link_state = LPFC_HBA_ERROR; 5849 } 5850 } 5851 } 5852 5853 /* Reg_vpi to tell firmware to resume normal operations */ 5854 void 5855 lpfc_issue_reg_vpi(struct lpfc_hba *phba, struct lpfc_vport *vport) 5856 { 5857 LPFC_MBOXQ_t *regvpimbox; 5858 5859 regvpimbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 5860 if (regvpimbox) { 5861 lpfc_reg_vpi(vport, regvpimbox); 5862 regvpimbox->mbox_cmpl = lpfc_mbx_cmpl_reg_vpi; 5863 regvpimbox->vport = vport; 5864 if (lpfc_sli_issue_mbox(phba, regvpimbox, MBX_NOWAIT) 5865 == MBX_NOT_FINISHED) { 5866 mempool_free(regvpimbox, phba->mbox_mem_pool); 5867 } 5868 } 5869 } 5870 5871 /* Start Link up / RSCN discovery on NPR nodes */ 5872 void 5873 lpfc_disc_start(struct lpfc_vport *vport) 5874 { 5875 struct lpfc_hba *phba = vport->phba; 5876 uint32_t num_sent; 5877 uint32_t clear_la_pending; 5878 5879 if (!lpfc_is_link_up(phba)) { 5880 lpfc_printf_vlog(vport, KERN_INFO, LOG_SLI, 5881 "3315 Link is not up %x\n", 5882 phba->link_state); 5883 return; 5884 } 5885 5886 if (phba->link_state == LPFC_CLEAR_LA) 5887 clear_la_pending = 1; 5888 else 5889 clear_la_pending = 0; 5890 5891 if (vport->port_state < LPFC_VPORT_READY) 5892 vport->port_state = LPFC_DISC_AUTH; 5893 5894 lpfc_set_disctmo(vport); 5895 5896 vport->fc_prevDID = vport->fc_myDID; 5897 vport->num_disc_nodes = 0; 5898 5899 /* Start Discovery state <hba_state> */ 5900 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, 5901 "0202 Start Discovery port state x%x " 5902 "flg x%lx Data: x%x x%x x%x\n", 5903 vport->port_state, vport->fc_flag, 5904 atomic_read(&vport->fc_plogi_cnt), 5905 atomic_read(&vport->fc_adisc_cnt), 5906 atomic_read(&vport->fc_npr_cnt)); 5907 5908 /* First do ADISCs - if any */ 5909 num_sent = lpfc_els_disc_adisc(vport); 5910 5911 if (num_sent) 5912 return; 5913 5914 /* Register the VPI for SLI3, NPIV only. */ 5915 if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) && 5916 !test_bit(FC_PT2PT, &vport->fc_flag) && 5917 !test_bit(FC_RSCN_MODE, &vport->fc_flag) && 5918 (phba->sli_rev < LPFC_SLI_REV4)) { 5919 lpfc_issue_clear_la(phba, vport); 5920 lpfc_issue_reg_vpi(phba, vport); 5921 return; 5922 } 5923 5924 /* 5925 * For SLI2, we need to set port_state to READY and continue 5926 * discovery. 5927 */ 5928 if (vport->port_state < LPFC_VPORT_READY && !clear_la_pending) { 5929 /* If we get here, there is nothing to ADISC */ 5930 lpfc_issue_clear_la(phba, vport); 5931 5932 if (!test_bit(FC_ABORT_DISCOVERY, &vport->fc_flag)) { 5933 vport->num_disc_nodes = 0; 5934 /* go thru NPR nodes and issue ELS PLOGIs */ 5935 if (atomic_read(&vport->fc_npr_cnt)) 5936 lpfc_els_disc_plogi(vport); 5937 5938 if (!vport->num_disc_nodes) { 5939 clear_bit(FC_NDISC_ACTIVE, &vport->fc_flag); 5940 lpfc_can_disctmo(vport); 5941 } 5942 } 5943 vport->port_state = LPFC_VPORT_READY; 5944 } else { 5945 /* Next do PLOGIs - if any */ 5946 num_sent = lpfc_els_disc_plogi(vport); 5947 5948 if (num_sent) 5949 return; 5950 5951 if (test_bit(FC_RSCN_MODE, &vport->fc_flag)) { 5952 /* Check to see if more RSCNs came in while we 5953 * were processing this one. 5954 */ 5955 if (vport->fc_rscn_id_cnt == 0 && 5956 !test_bit(FC_RSCN_DISCOVERY, &vport->fc_flag)) { 5957 clear_bit(FC_RSCN_MODE, &vport->fc_flag); 5958 lpfc_can_disctmo(vport); 5959 } else { 5960 lpfc_els_handle_rscn(vport); 5961 } 5962 } 5963 } 5964 return; 5965 } 5966 5967 /* 5968 * Ignore completion for all IOCBs on tx and txcmpl queue for ELS 5969 * ring the match the sppecified nodelist. 5970 */ 5971 static void 5972 lpfc_free_tx(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp) 5973 { 5974 LIST_HEAD(completions); 5975 struct lpfc_iocbq *iocb, *next_iocb; 5976 struct lpfc_sli_ring *pring; 5977 u32 ulp_command; 5978 5979 pring = lpfc_phba_elsring(phba); 5980 if (unlikely(!pring)) 5981 return; 5982 5983 /* Error matching iocb on txq or txcmplq 5984 * First check the txq. 5985 */ 5986 spin_lock_irq(&phba->hbalock); 5987 list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) { 5988 if (iocb->ndlp != ndlp) 5989 continue; 5990 5991 ulp_command = get_job_cmnd(phba, iocb); 5992 5993 if (ulp_command == CMD_ELS_REQUEST64_CR || 5994 ulp_command == CMD_XMIT_ELS_RSP64_CX) { 5995 5996 list_move_tail(&iocb->list, &completions); 5997 } 5998 } 5999 6000 /* Next check the txcmplq */ 6001 list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq, list) { 6002 if (iocb->ndlp != ndlp) 6003 continue; 6004 6005 ulp_command = get_job_cmnd(phba, iocb); 6006 6007 if (ulp_command == CMD_ELS_REQUEST64_CR || 6008 ulp_command == CMD_XMIT_ELS_RSP64_CX) { 6009 lpfc_sli_issue_abort_iotag(phba, pring, iocb, NULL); 6010 } 6011 } 6012 spin_unlock_irq(&phba->hbalock); 6013 6014 /* Make sure HBA is alive */ 6015 lpfc_issue_hb_tmo(phba); 6016 6017 /* Cancel all the IOCBs from the completions list */ 6018 lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT, 6019 IOERR_SLI_ABORTED); 6020 } 6021 6022 static void 6023 lpfc_disc_flush_list(struct lpfc_vport *vport) 6024 { 6025 struct lpfc_nodelist *ndlp, *next_ndlp; 6026 struct lpfc_hba *phba = vport->phba; 6027 6028 if (atomic_read(&vport->fc_plogi_cnt) || 6029 atomic_read(&vport->fc_adisc_cnt)) { 6030 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, 6031 nlp_listp) { 6032 if (ndlp->nlp_state == NLP_STE_PLOGI_ISSUE || 6033 ndlp->nlp_state == NLP_STE_ADISC_ISSUE) { 6034 lpfc_free_tx(phba, ndlp); 6035 } 6036 } 6037 } 6038 } 6039 6040 /* 6041 * lpfc_notify_xport_npr - notifies xport of node disappearance 6042 * @vport: Pointer to Virtual Port object. 6043 * 6044 * Transitions all ndlps to NPR state. When lpfc_nlp_set_state 6045 * calls lpfc_nlp_state_cleanup, the ndlp->rport is unregistered 6046 * and transport notified that the node is gone. 6047 * Return Code: 6048 * none 6049 */ 6050 static void 6051 lpfc_notify_xport_npr(struct lpfc_vport *vport) 6052 { 6053 struct lpfc_nodelist *ndlp, *next_ndlp; 6054 6055 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, 6056 nlp_listp) { 6057 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE); 6058 } 6059 } 6060 void 6061 lpfc_cleanup_discovery_resources(struct lpfc_vport *vport) 6062 { 6063 lpfc_els_flush_rscn(vport); 6064 lpfc_els_flush_cmd(vport); 6065 lpfc_disc_flush_list(vport); 6066 if (pci_channel_offline(vport->phba->pcidev)) 6067 lpfc_notify_xport_npr(vport); 6068 } 6069 6070 /*****************************************************************************/ 6071 /* 6072 * NAME: lpfc_disc_timeout 6073 * 6074 * FUNCTION: Fibre Channel driver discovery timeout routine. 6075 * 6076 * EXECUTION ENVIRONMENT: interrupt only 6077 * 6078 * CALLED FROM: 6079 * Timer function 6080 * 6081 * RETURNS: 6082 * none 6083 */ 6084 /*****************************************************************************/ 6085 void 6086 lpfc_disc_timeout(struct timer_list *t) 6087 { 6088 struct lpfc_vport *vport = from_timer(vport, t, fc_disctmo); 6089 struct lpfc_hba *phba = vport->phba; 6090 uint32_t tmo_posted; 6091 unsigned long flags = 0; 6092 6093 if (unlikely(!phba)) 6094 return; 6095 6096 spin_lock_irqsave(&vport->work_port_lock, flags); 6097 tmo_posted = vport->work_port_events & WORKER_DISC_TMO; 6098 if (!tmo_posted) 6099 vport->work_port_events |= WORKER_DISC_TMO; 6100 spin_unlock_irqrestore(&vport->work_port_lock, flags); 6101 6102 if (!tmo_posted) 6103 lpfc_worker_wake_up(phba); 6104 return; 6105 } 6106 6107 static void 6108 lpfc_disc_timeout_handler(struct lpfc_vport *vport) 6109 { 6110 struct lpfc_hba *phba = vport->phba; 6111 struct lpfc_sli *psli = &phba->sli; 6112 struct lpfc_nodelist *ndlp, *next_ndlp; 6113 LPFC_MBOXQ_t *initlinkmbox; 6114 int rc, clrlaerr = 0; 6115 6116 if (!test_and_clear_bit(FC_DISC_TMO, &vport->fc_flag)) 6117 return; 6118 6119 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, 6120 "disc timeout: state:x%x rtry:x%x flg:x%x", 6121 vport->port_state, vport->fc_ns_retry, vport->fc_flag); 6122 6123 switch (vport->port_state) { 6124 6125 case LPFC_LOCAL_CFG_LINK: 6126 /* 6127 * port_state is identically LPFC_LOCAL_CFG_LINK while 6128 * waiting for FAN timeout 6129 */ 6130 lpfc_printf_vlog(vport, KERN_WARNING, LOG_DISCOVERY, 6131 "0221 FAN timeout\n"); 6132 6133 /* Start discovery by sending FLOGI, clean up old rpis */ 6134 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, 6135 nlp_listp) { 6136 if (ndlp->nlp_state != NLP_STE_NPR_NODE) 6137 continue; 6138 if (ndlp->nlp_type & NLP_FABRIC) { 6139 /* Clean up the ndlp on Fabric connections */ 6140 lpfc_drop_node(vport, ndlp); 6141 6142 } else if (!(ndlp->nlp_flag & NLP_NPR_ADISC)) { 6143 /* Fail outstanding IO now since device 6144 * is marked for PLOGI. 6145 */ 6146 lpfc_unreg_rpi(vport, ndlp); 6147 } 6148 } 6149 if (vport->port_state != LPFC_FLOGI) { 6150 if (phba->sli_rev <= LPFC_SLI_REV3) 6151 lpfc_initial_flogi(vport); 6152 else 6153 lpfc_issue_init_vfi(vport); 6154 return; 6155 } 6156 break; 6157 6158 case LPFC_FDISC: 6159 case LPFC_FLOGI: 6160 /* port_state is identically LPFC_FLOGI while waiting for FLOGI cmpl */ 6161 /* Initial FLOGI timeout */ 6162 lpfc_printf_vlog(vport, KERN_ERR, 6163 LOG_TRACE_EVENT, 6164 "0222 Initial %s timeout\n", 6165 vport->vpi ? "FDISC" : "FLOGI"); 6166 6167 /* Assume no Fabric and go on with discovery. 6168 * Check for outstanding ELS FLOGI to abort. 6169 */ 6170 6171 /* FLOGI failed, so just use loop map to make discovery list */ 6172 lpfc_disc_list_loopmap(vport); 6173 6174 /* Start discovery */ 6175 lpfc_disc_start(vport); 6176 break; 6177 6178 case LPFC_FABRIC_CFG_LINK: 6179 /* hba_state is identically LPFC_FABRIC_CFG_LINK while waiting for 6180 NameServer login */ 6181 lpfc_printf_vlog(vport, KERN_ERR, 6182 LOG_TRACE_EVENT, 6183 "0223 Timeout while waiting for " 6184 "NameServer login\n"); 6185 /* Next look for NameServer ndlp */ 6186 ndlp = lpfc_findnode_did(vport, NameServer_DID); 6187 if (ndlp) 6188 lpfc_els_abort(phba, ndlp); 6189 6190 /* ReStart discovery */ 6191 goto restart_disc; 6192 6193 case LPFC_NS_QRY: 6194 /* Check for wait for NameServer Rsp timeout */ 6195 lpfc_printf_vlog(vport, KERN_ERR, 6196 LOG_TRACE_EVENT, 6197 "0224 NameServer Query timeout " 6198 "Data: x%x x%x\n", 6199 vport->fc_ns_retry, LPFC_MAX_NS_RETRY); 6200 6201 if (vport->fc_ns_retry < LPFC_MAX_NS_RETRY) { 6202 /* Try it one more time */ 6203 vport->fc_ns_retry++; 6204 vport->gidft_inp = 0; 6205 rc = lpfc_issue_gidft(vport); 6206 if (rc == 0) 6207 break; 6208 } 6209 vport->fc_ns_retry = 0; 6210 6211 restart_disc: 6212 /* 6213 * Discovery is over. 6214 * set port_state to PORT_READY if SLI2. 6215 * cmpl_reg_vpi will set port_state to READY for SLI3. 6216 */ 6217 if (phba->sli_rev < LPFC_SLI_REV4) { 6218 if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) 6219 lpfc_issue_reg_vpi(phba, vport); 6220 else { 6221 lpfc_issue_clear_la(phba, vport); 6222 vport->port_state = LPFC_VPORT_READY; 6223 } 6224 } 6225 6226 /* Setup and issue mailbox INITIALIZE LINK command */ 6227 initlinkmbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 6228 if (!initlinkmbox) { 6229 lpfc_printf_vlog(vport, KERN_ERR, 6230 LOG_TRACE_EVENT, 6231 "0206 Device Discovery " 6232 "completion error\n"); 6233 phba->link_state = LPFC_HBA_ERROR; 6234 break; 6235 } 6236 6237 lpfc_linkdown(phba); 6238 lpfc_init_link(phba, initlinkmbox, phba->cfg_topology, 6239 phba->cfg_link_speed); 6240 initlinkmbox->u.mb.un.varInitLnk.lipsr_AL_PA = 0; 6241 initlinkmbox->vport = vport; 6242 initlinkmbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl; 6243 rc = lpfc_sli_issue_mbox(phba, initlinkmbox, MBX_NOWAIT); 6244 lpfc_set_loopback_flag(phba); 6245 if (rc == MBX_NOT_FINISHED) 6246 mempool_free(initlinkmbox, phba->mbox_mem_pool); 6247 6248 break; 6249 6250 case LPFC_DISC_AUTH: 6251 /* Node Authentication timeout */ 6252 lpfc_printf_vlog(vport, KERN_ERR, 6253 LOG_TRACE_EVENT, 6254 "0227 Node Authentication timeout\n"); 6255 lpfc_disc_flush_list(vport); 6256 6257 /* 6258 * set port_state to PORT_READY if SLI2. 6259 * cmpl_reg_vpi will set port_state to READY for SLI3. 6260 */ 6261 if (phba->sli_rev < LPFC_SLI_REV4) { 6262 if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) 6263 lpfc_issue_reg_vpi(phba, vport); 6264 else { /* NPIV Not enabled */ 6265 lpfc_issue_clear_la(phba, vport); 6266 vport->port_state = LPFC_VPORT_READY; 6267 } 6268 } 6269 break; 6270 6271 case LPFC_VPORT_READY: 6272 if (test_bit(FC_RSCN_MODE, &vport->fc_flag)) { 6273 lpfc_printf_vlog(vport, KERN_ERR, 6274 LOG_TRACE_EVENT, 6275 "0231 RSCN timeout Data: x%x " 6276 "x%x x%x x%x\n", 6277 vport->fc_ns_retry, LPFC_MAX_NS_RETRY, 6278 vport->port_state, vport->gidft_inp); 6279 6280 /* Cleanup any outstanding ELS commands */ 6281 lpfc_els_flush_cmd(vport); 6282 6283 lpfc_els_flush_rscn(vport); 6284 lpfc_disc_flush_list(vport); 6285 } 6286 break; 6287 6288 default: 6289 lpfc_printf_vlog(vport, KERN_ERR, 6290 LOG_TRACE_EVENT, 6291 "0273 Unexpected discovery timeout, " 6292 "vport State x%x\n", vport->port_state); 6293 break; 6294 } 6295 6296 switch (phba->link_state) { 6297 case LPFC_CLEAR_LA: 6298 /* CLEAR LA timeout */ 6299 lpfc_printf_vlog(vport, KERN_ERR, 6300 LOG_TRACE_EVENT, 6301 "0228 CLEAR LA timeout\n"); 6302 clrlaerr = 1; 6303 break; 6304 6305 case LPFC_LINK_UP: 6306 lpfc_issue_clear_la(phba, vport); 6307 fallthrough; 6308 case LPFC_LINK_UNKNOWN: 6309 case LPFC_WARM_START: 6310 case LPFC_INIT_START: 6311 case LPFC_INIT_MBX_CMDS: 6312 case LPFC_LINK_DOWN: 6313 case LPFC_HBA_ERROR: 6314 lpfc_printf_vlog(vport, KERN_ERR, 6315 LOG_TRACE_EVENT, 6316 "0230 Unexpected timeout, hba link " 6317 "state x%x\n", phba->link_state); 6318 clrlaerr = 1; 6319 break; 6320 6321 case LPFC_HBA_READY: 6322 break; 6323 } 6324 6325 if (clrlaerr) { 6326 lpfc_disc_flush_list(vport); 6327 if (phba->sli_rev != LPFC_SLI_REV4) { 6328 psli->sli3_ring[(LPFC_EXTRA_RING)].flag &= 6329 ~LPFC_STOP_IOCB_EVENT; 6330 psli->sli3_ring[LPFC_FCP_RING].flag &= 6331 ~LPFC_STOP_IOCB_EVENT; 6332 } 6333 vport->port_state = LPFC_VPORT_READY; 6334 } 6335 return; 6336 } 6337 6338 /* 6339 * This routine handles processing a NameServer REG_LOGIN mailbox 6340 * command upon completion. It is setup in the LPFC_MBOXQ 6341 * as the completion routine when the command is 6342 * handed off to the SLI layer. 6343 */ 6344 void 6345 lpfc_mbx_cmpl_fdmi_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 6346 { 6347 MAILBOX_t *mb = &pmb->u.mb; 6348 struct lpfc_nodelist *ndlp = pmb->ctx_ndlp; 6349 struct lpfc_vport *vport = pmb->vport; 6350 6351 pmb->ctx_ndlp = NULL; 6352 6353 if (phba->sli_rev < LPFC_SLI_REV4) 6354 ndlp->nlp_rpi = mb->un.varWords[0]; 6355 ndlp->nlp_flag |= NLP_RPI_REGISTERED; 6356 ndlp->nlp_type |= NLP_FABRIC; 6357 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE); 6358 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE | LOG_DISCOVERY, 6359 "0004 rpi:%x DID:%x flg:%x %d x%px\n", 6360 ndlp->nlp_rpi, ndlp->nlp_DID, ndlp->nlp_flag, 6361 kref_read(&ndlp->kref), 6362 ndlp); 6363 /* 6364 * Start issuing Fabric-Device Management Interface (FDMI) command to 6365 * 0xfffffa (FDMI well known port). 6366 * DHBA -> DPRT -> RHBA -> RPA (physical port) 6367 * DPRT -> RPRT (vports) 6368 */ 6369 if (vport->port_type == LPFC_PHYSICAL_PORT) { 6370 phba->link_flag &= ~LS_CT_VEN_RPA; /* For extra Vendor RPA */ 6371 lpfc_fdmi_cmd(vport, ndlp, SLI_MGMT_DHBA, 0); 6372 } else { 6373 lpfc_fdmi_cmd(vport, ndlp, SLI_MGMT_DPRT, 0); 6374 } 6375 6376 6377 /* decrement the node reference count held for this callback 6378 * function. 6379 */ 6380 lpfc_nlp_put(ndlp); 6381 lpfc_mbox_rsrc_cleanup(phba, pmb, MBOX_THD_UNLOCKED); 6382 return; 6383 } 6384 6385 static int 6386 lpfc_filter_by_rpi(struct lpfc_nodelist *ndlp, void *param) 6387 { 6388 uint16_t *rpi = param; 6389 6390 return ndlp->nlp_rpi == *rpi; 6391 } 6392 6393 static int 6394 lpfc_filter_by_wwpn(struct lpfc_nodelist *ndlp, void *param) 6395 { 6396 return memcmp(&ndlp->nlp_portname, param, 6397 sizeof(ndlp->nlp_portname)) == 0; 6398 } 6399 6400 static struct lpfc_nodelist * 6401 __lpfc_find_node(struct lpfc_vport *vport, node_filter filter, void *param) 6402 { 6403 struct lpfc_nodelist *ndlp; 6404 6405 list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) { 6406 if (filter(ndlp, param)) { 6407 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE_VERBOSE, 6408 "3185 FIND node filter %ps DID " 6409 "ndlp x%px did x%x flg x%x st x%x " 6410 "xri x%x type x%x rpi x%x\n", 6411 filter, ndlp, ndlp->nlp_DID, 6412 ndlp->nlp_flag, ndlp->nlp_state, 6413 ndlp->nlp_xri, ndlp->nlp_type, 6414 ndlp->nlp_rpi); 6415 return ndlp; 6416 } 6417 } 6418 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE, 6419 "3186 FIND node filter %ps NOT FOUND.\n", filter); 6420 return NULL; 6421 } 6422 6423 /* 6424 * This routine looks up the ndlp lists for the given RPI. If rpi found it 6425 * returns the node list element pointer else return NULL. 6426 */ 6427 struct lpfc_nodelist * 6428 __lpfc_findnode_rpi(struct lpfc_vport *vport, uint16_t rpi) 6429 { 6430 return __lpfc_find_node(vport, lpfc_filter_by_rpi, &rpi); 6431 } 6432 6433 /* 6434 * This routine looks up the ndlp lists for the given WWPN. If WWPN found it 6435 * returns the node element list pointer else return NULL. 6436 */ 6437 struct lpfc_nodelist * 6438 lpfc_findnode_wwpn(struct lpfc_vport *vport, struct lpfc_name *wwpn) 6439 { 6440 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 6441 struct lpfc_nodelist *ndlp; 6442 6443 spin_lock_irq(shost->host_lock); 6444 ndlp = __lpfc_find_node(vport, lpfc_filter_by_wwpn, wwpn); 6445 spin_unlock_irq(shost->host_lock); 6446 return ndlp; 6447 } 6448 6449 /* 6450 * This routine looks up the ndlp lists for the given RPI. If the rpi 6451 * is found, the routine returns the node element list pointer else 6452 * return NULL. 6453 */ 6454 struct lpfc_nodelist * 6455 lpfc_findnode_rpi(struct lpfc_vport *vport, uint16_t rpi) 6456 { 6457 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 6458 struct lpfc_nodelist *ndlp; 6459 unsigned long flags; 6460 6461 spin_lock_irqsave(shost->host_lock, flags); 6462 ndlp = __lpfc_findnode_rpi(vport, rpi); 6463 spin_unlock_irqrestore(shost->host_lock, flags); 6464 return ndlp; 6465 } 6466 6467 /** 6468 * lpfc_find_vport_by_vpid - Find a vport on a HBA through vport identifier 6469 * @phba: pointer to lpfc hba data structure. 6470 * @vpi: the physical host virtual N_Port identifier. 6471 * 6472 * This routine finds a vport on a HBA (referred by @phba) through a 6473 * @vpi. The function walks the HBA's vport list and returns the address 6474 * of the vport with the matching @vpi. 6475 * 6476 * Return code 6477 * NULL - No vport with the matching @vpi found 6478 * Otherwise - Address to the vport with the matching @vpi. 6479 **/ 6480 struct lpfc_vport * 6481 lpfc_find_vport_by_vpid(struct lpfc_hba *phba, uint16_t vpi) 6482 { 6483 struct lpfc_vport *vport; 6484 unsigned long flags; 6485 int i = 0; 6486 6487 /* The physical ports are always vpi 0 - translate is unnecessary. */ 6488 if (vpi > 0) { 6489 /* 6490 * Translate the physical vpi to the logical vpi. The 6491 * vport stores the logical vpi. 6492 */ 6493 for (i = 0; i <= phba->max_vpi; i++) { 6494 if (vpi == phba->vpi_ids[i]) 6495 break; 6496 } 6497 6498 if (i > phba->max_vpi) { 6499 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 6500 "2936 Could not find Vport mapped " 6501 "to vpi %d\n", vpi); 6502 return NULL; 6503 } 6504 } 6505 6506 spin_lock_irqsave(&phba->port_list_lock, flags); 6507 list_for_each_entry(vport, &phba->port_list, listentry) { 6508 if (vport->vpi == i) { 6509 spin_unlock_irqrestore(&phba->port_list_lock, flags); 6510 return vport; 6511 } 6512 } 6513 spin_unlock_irqrestore(&phba->port_list_lock, flags); 6514 return NULL; 6515 } 6516 6517 struct lpfc_nodelist * 6518 lpfc_nlp_init(struct lpfc_vport *vport, uint32_t did) 6519 { 6520 struct lpfc_nodelist *ndlp; 6521 int rpi = LPFC_RPI_ALLOC_ERROR; 6522 6523 if (vport->phba->sli_rev == LPFC_SLI_REV4) { 6524 rpi = lpfc_sli4_alloc_rpi(vport->phba); 6525 if (rpi == LPFC_RPI_ALLOC_ERROR) 6526 return NULL; 6527 } 6528 6529 ndlp = mempool_alloc(vport->phba->nlp_mem_pool, GFP_KERNEL); 6530 if (!ndlp) { 6531 if (vport->phba->sli_rev == LPFC_SLI_REV4) 6532 lpfc_sli4_free_rpi(vport->phba, rpi); 6533 return NULL; 6534 } 6535 6536 memset(ndlp, 0, sizeof (struct lpfc_nodelist)); 6537 6538 spin_lock_init(&ndlp->lock); 6539 6540 lpfc_initialize_node(vport, ndlp, did); 6541 INIT_LIST_HEAD(&ndlp->nlp_listp); 6542 if (vport->phba->sli_rev == LPFC_SLI_REV4) { 6543 ndlp->nlp_rpi = rpi; 6544 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE | LOG_DISCOVERY, 6545 "0007 Init New ndlp x%px, rpi:x%x DID:%x " 6546 "flg:x%x refcnt:%d\n", 6547 ndlp, ndlp->nlp_rpi, ndlp->nlp_DID, 6548 ndlp->nlp_flag, kref_read(&ndlp->kref)); 6549 6550 ndlp->active_rrqs_xri_bitmap = 6551 mempool_alloc(vport->phba->active_rrq_pool, 6552 GFP_KERNEL); 6553 if (ndlp->active_rrqs_xri_bitmap) 6554 memset(ndlp->active_rrqs_xri_bitmap, 0, 6555 ndlp->phba->cfg_rrq_xri_bitmap_sz); 6556 } 6557 6558 6559 6560 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE, 6561 "node init: did:x%x", 6562 ndlp->nlp_DID, 0, 0); 6563 6564 return ndlp; 6565 } 6566 6567 /* This routine releases all resources associated with a specifc NPort's ndlp 6568 * and mempool_free's the nodelist. 6569 */ 6570 static void 6571 lpfc_nlp_release(struct kref *kref) 6572 { 6573 struct lpfc_nodelist *ndlp = container_of(kref, struct lpfc_nodelist, 6574 kref); 6575 struct lpfc_vport *vport = ndlp->vport; 6576 6577 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE, 6578 "node release: did:x%x flg:x%x type:x%x", 6579 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type); 6580 6581 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE, 6582 "0279 %s: ndlp: x%px did %x refcnt:%d rpi:%x\n", 6583 __func__, ndlp, ndlp->nlp_DID, 6584 kref_read(&ndlp->kref), ndlp->nlp_rpi); 6585 6586 /* remove ndlp from action. */ 6587 lpfc_cancel_retry_delay_tmo(vport, ndlp); 6588 lpfc_cleanup_node(vport, ndlp); 6589 6590 /* Not all ELS transactions have registered the RPI with the port. 6591 * In these cases the rpi usage is temporary and the node is 6592 * released when the WQE is completed. Catch this case to free the 6593 * RPI to the pool. Because this node is in the release path, a lock 6594 * is unnecessary. All references are gone and the node has been 6595 * dequeued. 6596 */ 6597 if (ndlp->nlp_flag & NLP_RELEASE_RPI) { 6598 if (ndlp->nlp_rpi != LPFC_RPI_ALLOC_ERROR && 6599 !(ndlp->nlp_flag & (NLP_RPI_REGISTERED | NLP_UNREG_INP))) { 6600 lpfc_sli4_free_rpi(vport->phba, ndlp->nlp_rpi); 6601 ndlp->nlp_rpi = LPFC_RPI_ALLOC_ERROR; 6602 } 6603 } 6604 6605 /* The node is not freed back to memory, it is released to a pool so 6606 * the node fields need to be cleaned up. 6607 */ 6608 ndlp->vport = NULL; 6609 ndlp->nlp_state = NLP_STE_FREED_NODE; 6610 ndlp->nlp_flag = 0; 6611 ndlp->fc4_xpt_flags = 0; 6612 6613 /* free ndlp memory for final ndlp release */ 6614 if (ndlp->phba->sli_rev == LPFC_SLI_REV4) 6615 mempool_free(ndlp->active_rrqs_xri_bitmap, 6616 ndlp->phba->active_rrq_pool); 6617 mempool_free(ndlp, ndlp->phba->nlp_mem_pool); 6618 } 6619 6620 /* This routine bumps the reference count for a ndlp structure to ensure 6621 * that one discovery thread won't free a ndlp while another discovery thread 6622 * is using it. 6623 */ 6624 struct lpfc_nodelist * 6625 lpfc_nlp_get(struct lpfc_nodelist *ndlp) 6626 { 6627 unsigned long flags; 6628 6629 if (ndlp) { 6630 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE, 6631 "node get: did:x%x flg:x%x refcnt:x%x", 6632 ndlp->nlp_DID, ndlp->nlp_flag, 6633 kref_read(&ndlp->kref)); 6634 6635 /* The check of ndlp usage to prevent incrementing the 6636 * ndlp reference count that is in the process of being 6637 * released. 6638 */ 6639 spin_lock_irqsave(&ndlp->lock, flags); 6640 if (!kref_get_unless_zero(&ndlp->kref)) { 6641 spin_unlock_irqrestore(&ndlp->lock, flags); 6642 lpfc_printf_vlog(ndlp->vport, KERN_WARNING, LOG_NODE, 6643 "0276 %s: ndlp:x%px refcnt:%d\n", 6644 __func__, (void *)ndlp, kref_read(&ndlp->kref)); 6645 return NULL; 6646 } 6647 spin_unlock_irqrestore(&ndlp->lock, flags); 6648 } else { 6649 WARN_ONCE(!ndlp, "**** %s, get ref on NULL ndlp!", __func__); 6650 } 6651 6652 return ndlp; 6653 } 6654 6655 /* This routine decrements the reference count for a ndlp structure. If the 6656 * count goes to 0, this indicates the associated nodelist should be freed. 6657 */ 6658 int 6659 lpfc_nlp_put(struct lpfc_nodelist *ndlp) 6660 { 6661 if (ndlp) { 6662 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE, 6663 "node put: did:x%x flg:x%x refcnt:x%x", 6664 ndlp->nlp_DID, ndlp->nlp_flag, 6665 kref_read(&ndlp->kref)); 6666 } else { 6667 WARN_ONCE(!ndlp, "**** %s, put ref on NULL ndlp!", __func__); 6668 } 6669 6670 return ndlp ? kref_put(&ndlp->kref, lpfc_nlp_release) : 0; 6671 } 6672 6673 /** 6674 * lpfc_fcf_inuse - Check if FCF can be unregistered. 6675 * @phba: Pointer to hba context object. 6676 * 6677 * This function iterate through all FC nodes associated 6678 * will all vports to check if there is any node with 6679 * fc_rports associated with it. If there is an fc_rport 6680 * associated with the node, then the node is either in 6681 * discovered state or its devloss_timer is pending. 6682 */ 6683 static int 6684 lpfc_fcf_inuse(struct lpfc_hba *phba) 6685 { 6686 struct lpfc_vport **vports; 6687 int i, ret = 0; 6688 struct lpfc_nodelist *ndlp; 6689 unsigned long iflags; 6690 6691 vports = lpfc_create_vport_work_array(phba); 6692 6693 /* If driver cannot allocate memory, indicate fcf is in use */ 6694 if (!vports) 6695 return 1; 6696 6697 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) { 6698 /* 6699 * IF the CVL_RCVD bit is not set then we have sent the 6700 * flogi. 6701 * If dev_loss fires while we are waiting we do not want to 6702 * unreg the fcf. 6703 */ 6704 if (!test_bit(FC_VPORT_CVL_RCVD, &vports[i]->fc_flag)) { 6705 ret = 1; 6706 goto out; 6707 } 6708 spin_lock_irqsave(&vports[i]->fc_nodes_list_lock, iflags); 6709 list_for_each_entry(ndlp, &vports[i]->fc_nodes, nlp_listp) { 6710 if (ndlp->rport && 6711 (ndlp->rport->roles & FC_RPORT_ROLE_FCP_TARGET)) { 6712 ret = 1; 6713 spin_unlock_irqrestore(&vports[i]->fc_nodes_list_lock, 6714 iflags); 6715 goto out; 6716 } else if (ndlp->nlp_flag & NLP_RPI_REGISTERED) { 6717 ret = 1; 6718 lpfc_printf_log(phba, KERN_INFO, 6719 LOG_NODE | LOG_DISCOVERY, 6720 "2624 RPI %x DID %x flag %x " 6721 "still logged in\n", 6722 ndlp->nlp_rpi, ndlp->nlp_DID, 6723 ndlp->nlp_flag); 6724 } 6725 } 6726 spin_unlock_irqrestore(&vports[i]->fc_nodes_list_lock, iflags); 6727 } 6728 out: 6729 lpfc_destroy_vport_work_array(phba, vports); 6730 return ret; 6731 } 6732 6733 /** 6734 * lpfc_unregister_vfi_cmpl - Completion handler for unreg vfi. 6735 * @phba: Pointer to hba context object. 6736 * @mboxq: Pointer to mailbox object. 6737 * 6738 * This function frees memory associated with the mailbox command. 6739 */ 6740 void 6741 lpfc_unregister_vfi_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq) 6742 { 6743 struct lpfc_vport *vport = mboxq->vport; 6744 6745 if (mboxq->u.mb.mbxStatus) { 6746 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 6747 "2555 UNREG_VFI mbxStatus error x%x " 6748 "HBA state x%x\n", 6749 mboxq->u.mb.mbxStatus, vport->port_state); 6750 } 6751 clear_bit(FC_VFI_REGISTERED, &phba->pport->fc_flag); 6752 mempool_free(mboxq, phba->mbox_mem_pool); 6753 return; 6754 } 6755 6756 /** 6757 * lpfc_unregister_fcfi_cmpl - Completion handler for unreg fcfi. 6758 * @phba: Pointer to hba context object. 6759 * @mboxq: Pointer to mailbox object. 6760 * 6761 * This function frees memory associated with the mailbox command. 6762 */ 6763 static void 6764 lpfc_unregister_fcfi_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq) 6765 { 6766 struct lpfc_vport *vport = mboxq->vport; 6767 6768 if (mboxq->u.mb.mbxStatus) { 6769 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 6770 "2550 UNREG_FCFI mbxStatus error x%x " 6771 "HBA state x%x\n", 6772 mboxq->u.mb.mbxStatus, vport->port_state); 6773 } 6774 mempool_free(mboxq, phba->mbox_mem_pool); 6775 return; 6776 } 6777 6778 /** 6779 * lpfc_unregister_fcf_prep - Unregister fcf record preparation 6780 * @phba: Pointer to hba context object. 6781 * 6782 * This function prepare the HBA for unregistering the currently registered 6783 * FCF from the HBA. It performs unregistering, in order, RPIs, VPIs, and 6784 * VFIs. 6785 */ 6786 int 6787 lpfc_unregister_fcf_prep(struct lpfc_hba *phba) 6788 { 6789 struct lpfc_vport **vports; 6790 struct lpfc_nodelist *ndlp; 6791 struct Scsi_Host *shost; 6792 int i = 0, rc; 6793 6794 /* Unregister RPIs */ 6795 if (lpfc_fcf_inuse(phba)) 6796 lpfc_unreg_hba_rpis(phba); 6797 6798 /* At this point, all discovery is aborted */ 6799 phba->pport->port_state = LPFC_VPORT_UNKNOWN; 6800 6801 /* Unregister VPIs */ 6802 vports = lpfc_create_vport_work_array(phba); 6803 if (vports && (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)) 6804 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) { 6805 /* Stop FLOGI/FDISC retries */ 6806 ndlp = lpfc_findnode_did(vports[i], Fabric_DID); 6807 if (ndlp) 6808 lpfc_cancel_retry_delay_tmo(vports[i], ndlp); 6809 lpfc_cleanup_pending_mbox(vports[i]); 6810 if (phba->sli_rev == LPFC_SLI_REV4) 6811 lpfc_sli4_unreg_all_rpis(vports[i]); 6812 lpfc_mbx_unreg_vpi(vports[i]); 6813 shost = lpfc_shost_from_vport(vports[i]); 6814 spin_lock_irq(shost->host_lock); 6815 vports[i]->vpi_state &= ~LPFC_VPI_REGISTERED; 6816 spin_unlock_irq(shost->host_lock); 6817 set_bit(FC_VPORT_NEEDS_INIT_VPI, &vports[i]->fc_flag); 6818 } 6819 lpfc_destroy_vport_work_array(phba, vports); 6820 if (i == 0 && (!(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED))) { 6821 ndlp = lpfc_findnode_did(phba->pport, Fabric_DID); 6822 if (ndlp) 6823 lpfc_cancel_retry_delay_tmo(phba->pport, ndlp); 6824 lpfc_cleanup_pending_mbox(phba->pport); 6825 if (phba->sli_rev == LPFC_SLI_REV4) 6826 lpfc_sli4_unreg_all_rpis(phba->pport); 6827 lpfc_mbx_unreg_vpi(phba->pport); 6828 shost = lpfc_shost_from_vport(phba->pport); 6829 spin_lock_irq(shost->host_lock); 6830 phba->pport->vpi_state &= ~LPFC_VPI_REGISTERED; 6831 spin_unlock_irq(shost->host_lock); 6832 set_bit(FC_VPORT_NEEDS_INIT_VPI, &phba->pport->fc_flag); 6833 } 6834 6835 /* Cleanup any outstanding ELS commands */ 6836 lpfc_els_flush_all_cmd(phba); 6837 6838 /* Unregister the physical port VFI */ 6839 rc = lpfc_issue_unreg_vfi(phba->pport); 6840 return rc; 6841 } 6842 6843 /** 6844 * lpfc_sli4_unregister_fcf - Unregister currently registered FCF record 6845 * @phba: Pointer to hba context object. 6846 * 6847 * This function issues synchronous unregister FCF mailbox command to HBA to 6848 * unregister the currently registered FCF record. The driver does not reset 6849 * the driver FCF usage state flags. 6850 * 6851 * Return 0 if successfully issued, none-zero otherwise. 6852 */ 6853 int 6854 lpfc_sli4_unregister_fcf(struct lpfc_hba *phba) 6855 { 6856 LPFC_MBOXQ_t *mbox; 6857 int rc; 6858 6859 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 6860 if (!mbox) { 6861 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 6862 "2551 UNREG_FCFI mbox allocation failed" 6863 "HBA state x%x\n", phba->pport->port_state); 6864 return -ENOMEM; 6865 } 6866 lpfc_unreg_fcfi(mbox, phba->fcf.fcfi); 6867 mbox->vport = phba->pport; 6868 mbox->mbox_cmpl = lpfc_unregister_fcfi_cmpl; 6869 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT); 6870 6871 if (rc == MBX_NOT_FINISHED) { 6872 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 6873 "2552 Unregister FCFI command failed rc x%x " 6874 "HBA state x%x\n", 6875 rc, phba->pport->port_state); 6876 return -EINVAL; 6877 } 6878 return 0; 6879 } 6880 6881 /** 6882 * lpfc_unregister_fcf_rescan - Unregister currently registered fcf and rescan 6883 * @phba: Pointer to hba context object. 6884 * 6885 * This function unregisters the currently reigstered FCF. This function 6886 * also tries to find another FCF for discovery by rescan the HBA FCF table. 6887 */ 6888 void 6889 lpfc_unregister_fcf_rescan(struct lpfc_hba *phba) 6890 { 6891 int rc; 6892 6893 /* Preparation for unregistering fcf */ 6894 rc = lpfc_unregister_fcf_prep(phba); 6895 if (rc) { 6896 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 6897 "2748 Failed to prepare for unregistering " 6898 "HBA's FCF record: rc=%d\n", rc); 6899 return; 6900 } 6901 6902 /* Now, unregister FCF record and reset HBA FCF state */ 6903 rc = lpfc_sli4_unregister_fcf(phba); 6904 if (rc) 6905 return; 6906 /* Reset HBA FCF states after successful unregister FCF */ 6907 spin_lock_irq(&phba->hbalock); 6908 phba->fcf.fcf_flag = 0; 6909 spin_unlock_irq(&phba->hbalock); 6910 phba->fcf.current_rec.flag = 0; 6911 6912 /* 6913 * If driver is not unloading, check if there is any other 6914 * FCF record that can be used for discovery. 6915 */ 6916 if (test_bit(FC_UNLOADING, &phba->pport->load_flag) || 6917 phba->link_state < LPFC_LINK_UP) 6918 return; 6919 6920 /* This is considered as the initial FCF discovery scan */ 6921 spin_lock_irq(&phba->hbalock); 6922 phba->fcf.fcf_flag |= FCF_INIT_DISC; 6923 spin_unlock_irq(&phba->hbalock); 6924 6925 /* Reset FCF roundrobin bmask for new discovery */ 6926 lpfc_sli4_clear_fcf_rr_bmask(phba); 6927 6928 rc = lpfc_sli4_fcf_scan_read_fcf_rec(phba, LPFC_FCOE_FCF_GET_FIRST); 6929 6930 if (rc) { 6931 spin_lock_irq(&phba->hbalock); 6932 phba->fcf.fcf_flag &= ~FCF_INIT_DISC; 6933 spin_unlock_irq(&phba->hbalock); 6934 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 6935 "2553 lpfc_unregister_unused_fcf failed " 6936 "to read FCF record HBA state x%x\n", 6937 phba->pport->port_state); 6938 } 6939 } 6940 6941 /** 6942 * lpfc_unregister_fcf - Unregister the currently registered fcf record 6943 * @phba: Pointer to hba context object. 6944 * 6945 * This function just unregisters the currently reigstered FCF. It does not 6946 * try to find another FCF for discovery. 6947 */ 6948 void 6949 lpfc_unregister_fcf(struct lpfc_hba *phba) 6950 { 6951 int rc; 6952 6953 /* Preparation for unregistering fcf */ 6954 rc = lpfc_unregister_fcf_prep(phba); 6955 if (rc) { 6956 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 6957 "2749 Failed to prepare for unregistering " 6958 "HBA's FCF record: rc=%d\n", rc); 6959 return; 6960 } 6961 6962 /* Now, unregister FCF record and reset HBA FCF state */ 6963 rc = lpfc_sli4_unregister_fcf(phba); 6964 if (rc) 6965 return; 6966 /* Set proper HBA FCF states after successful unregister FCF */ 6967 spin_lock_irq(&phba->hbalock); 6968 phba->fcf.fcf_flag &= ~FCF_REGISTERED; 6969 spin_unlock_irq(&phba->hbalock); 6970 } 6971 6972 /** 6973 * lpfc_unregister_unused_fcf - Unregister FCF if all devices are disconnected. 6974 * @phba: Pointer to hba context object. 6975 * 6976 * This function check if there are any connected remote port for the FCF and 6977 * if all the devices are disconnected, this function unregister FCFI. 6978 * This function also tries to use another FCF for discovery. 6979 */ 6980 void 6981 lpfc_unregister_unused_fcf(struct lpfc_hba *phba) 6982 { 6983 /* 6984 * If HBA is not running in FIP mode, if HBA does not support 6985 * FCoE, if FCF discovery is ongoing, or if FCF has not been 6986 * registered, do nothing. 6987 */ 6988 spin_lock_irq(&phba->hbalock); 6989 if (!test_bit(HBA_FCOE_MODE, &phba->hba_flag) || 6990 !(phba->fcf.fcf_flag & FCF_REGISTERED) || 6991 !test_bit(HBA_FIP_SUPPORT, &phba->hba_flag) || 6992 (phba->fcf.fcf_flag & FCF_DISCOVERY) || 6993 phba->pport->port_state == LPFC_FLOGI) { 6994 spin_unlock_irq(&phba->hbalock); 6995 return; 6996 } 6997 spin_unlock_irq(&phba->hbalock); 6998 6999 if (lpfc_fcf_inuse(phba)) 7000 return; 7001 7002 lpfc_unregister_fcf_rescan(phba); 7003 } 7004 7005 /** 7006 * lpfc_read_fcf_conn_tbl - Create driver FCF connection table. 7007 * @phba: Pointer to hba context object. 7008 * @buff: Buffer containing the FCF connection table as in the config 7009 * region. 7010 * This function create driver data structure for the FCF connection 7011 * record table read from config region 23. 7012 */ 7013 static void 7014 lpfc_read_fcf_conn_tbl(struct lpfc_hba *phba, 7015 uint8_t *buff) 7016 { 7017 struct lpfc_fcf_conn_entry *conn_entry, *next_conn_entry; 7018 struct lpfc_fcf_conn_hdr *conn_hdr; 7019 struct lpfc_fcf_conn_rec *conn_rec; 7020 uint32_t record_count; 7021 int i; 7022 7023 /* Free the current connect table */ 7024 list_for_each_entry_safe(conn_entry, next_conn_entry, 7025 &phba->fcf_conn_rec_list, list) { 7026 list_del_init(&conn_entry->list); 7027 kfree(conn_entry); 7028 } 7029 7030 conn_hdr = (struct lpfc_fcf_conn_hdr *) buff; 7031 record_count = conn_hdr->length * sizeof(uint32_t)/ 7032 sizeof(struct lpfc_fcf_conn_rec); 7033 7034 conn_rec = (struct lpfc_fcf_conn_rec *) 7035 (buff + sizeof(struct lpfc_fcf_conn_hdr)); 7036 7037 for (i = 0; i < record_count; i++) { 7038 if (!(conn_rec[i].flags & FCFCNCT_VALID)) 7039 continue; 7040 conn_entry = kzalloc(sizeof(struct lpfc_fcf_conn_entry), 7041 GFP_KERNEL); 7042 if (!conn_entry) { 7043 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 7044 "2566 Failed to allocate connection" 7045 " table entry\n"); 7046 return; 7047 } 7048 7049 memcpy(&conn_entry->conn_rec, &conn_rec[i], 7050 sizeof(struct lpfc_fcf_conn_rec)); 7051 list_add_tail(&conn_entry->list, 7052 &phba->fcf_conn_rec_list); 7053 } 7054 7055 if (!list_empty(&phba->fcf_conn_rec_list)) { 7056 i = 0; 7057 list_for_each_entry(conn_entry, &phba->fcf_conn_rec_list, 7058 list) { 7059 conn_rec = &conn_entry->conn_rec; 7060 lpfc_printf_log(phba, KERN_INFO, LOG_INIT, 7061 "3345 FCF connection list rec[%02d]: " 7062 "flags:x%04x, vtag:x%04x, " 7063 "fabric_name:x%02x:%02x:%02x:%02x:" 7064 "%02x:%02x:%02x:%02x, " 7065 "switch_name:x%02x:%02x:%02x:%02x:" 7066 "%02x:%02x:%02x:%02x\n", i++, 7067 conn_rec->flags, conn_rec->vlan_tag, 7068 conn_rec->fabric_name[0], 7069 conn_rec->fabric_name[1], 7070 conn_rec->fabric_name[2], 7071 conn_rec->fabric_name[3], 7072 conn_rec->fabric_name[4], 7073 conn_rec->fabric_name[5], 7074 conn_rec->fabric_name[6], 7075 conn_rec->fabric_name[7], 7076 conn_rec->switch_name[0], 7077 conn_rec->switch_name[1], 7078 conn_rec->switch_name[2], 7079 conn_rec->switch_name[3], 7080 conn_rec->switch_name[4], 7081 conn_rec->switch_name[5], 7082 conn_rec->switch_name[6], 7083 conn_rec->switch_name[7]); 7084 } 7085 } 7086 } 7087 7088 /** 7089 * lpfc_read_fcoe_param - Read FCoe parameters from conf region.. 7090 * @phba: Pointer to hba context object. 7091 * @buff: Buffer containing the FCoE parameter data structure. 7092 * 7093 * This function update driver data structure with config 7094 * parameters read from config region 23. 7095 */ 7096 static void 7097 lpfc_read_fcoe_param(struct lpfc_hba *phba, 7098 uint8_t *buff) 7099 { 7100 struct lpfc_fip_param_hdr *fcoe_param_hdr; 7101 struct lpfc_fcoe_params *fcoe_param; 7102 7103 fcoe_param_hdr = (struct lpfc_fip_param_hdr *) 7104 buff; 7105 fcoe_param = (struct lpfc_fcoe_params *) 7106 (buff + sizeof(struct lpfc_fip_param_hdr)); 7107 7108 if ((fcoe_param_hdr->parm_version != FIPP_VERSION) || 7109 (fcoe_param_hdr->length != FCOE_PARAM_LENGTH)) 7110 return; 7111 7112 if (fcoe_param_hdr->parm_flags & FIPP_VLAN_VALID) { 7113 phba->valid_vlan = 1; 7114 phba->vlan_id = le16_to_cpu(fcoe_param->vlan_tag) & 7115 0xFFF; 7116 } 7117 7118 phba->fc_map[0] = fcoe_param->fc_map[0]; 7119 phba->fc_map[1] = fcoe_param->fc_map[1]; 7120 phba->fc_map[2] = fcoe_param->fc_map[2]; 7121 return; 7122 } 7123 7124 /** 7125 * lpfc_get_rec_conf23 - Get a record type in config region data. 7126 * @buff: Buffer containing config region 23 data. 7127 * @size: Size of the data buffer. 7128 * @rec_type: Record type to be searched. 7129 * 7130 * This function searches config region data to find the beginning 7131 * of the record specified by record_type. If record found, this 7132 * function return pointer to the record else return NULL. 7133 */ 7134 static uint8_t * 7135 lpfc_get_rec_conf23(uint8_t *buff, uint32_t size, uint8_t rec_type) 7136 { 7137 uint32_t offset = 0, rec_length; 7138 7139 if ((buff[0] == LPFC_REGION23_LAST_REC) || 7140 (size < sizeof(uint32_t))) 7141 return NULL; 7142 7143 rec_length = buff[offset + 1]; 7144 7145 /* 7146 * One TLV record has one word header and number of data words 7147 * specified in the rec_length field of the record header. 7148 */ 7149 while ((offset + rec_length * sizeof(uint32_t) + sizeof(uint32_t)) 7150 <= size) { 7151 if (buff[offset] == rec_type) 7152 return &buff[offset]; 7153 7154 if (buff[offset] == LPFC_REGION23_LAST_REC) 7155 return NULL; 7156 7157 offset += rec_length * sizeof(uint32_t) + sizeof(uint32_t); 7158 rec_length = buff[offset + 1]; 7159 } 7160 return NULL; 7161 } 7162 7163 /** 7164 * lpfc_parse_fcoe_conf - Parse FCoE config data read from config region 23. 7165 * @phba: Pointer to lpfc_hba data structure. 7166 * @buff: Buffer containing config region 23 data. 7167 * @size: Size of the data buffer. 7168 * 7169 * This function parses the FCoE config parameters in config region 23 and 7170 * populate driver data structure with the parameters. 7171 */ 7172 void 7173 lpfc_parse_fcoe_conf(struct lpfc_hba *phba, 7174 uint8_t *buff, 7175 uint32_t size) 7176 { 7177 uint32_t offset = 0; 7178 uint8_t *rec_ptr; 7179 7180 /* 7181 * If data size is less than 2 words signature and version cannot be 7182 * verified. 7183 */ 7184 if (size < 2*sizeof(uint32_t)) 7185 return; 7186 7187 /* Check the region signature first */ 7188 if (memcmp(buff, LPFC_REGION23_SIGNATURE, 4)) { 7189 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 7190 "2567 Config region 23 has bad signature\n"); 7191 return; 7192 } 7193 7194 offset += 4; 7195 7196 /* Check the data structure version */ 7197 if (buff[offset] != LPFC_REGION23_VERSION) { 7198 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 7199 "2568 Config region 23 has bad version\n"); 7200 return; 7201 } 7202 offset += 4; 7203 7204 /* Read FCoE param record */ 7205 rec_ptr = lpfc_get_rec_conf23(&buff[offset], 7206 size - offset, FCOE_PARAM_TYPE); 7207 if (rec_ptr) 7208 lpfc_read_fcoe_param(phba, rec_ptr); 7209 7210 /* Read FCF connection table */ 7211 rec_ptr = lpfc_get_rec_conf23(&buff[offset], 7212 size - offset, FCOE_CONN_TBL_TYPE); 7213 if (rec_ptr) 7214 lpfc_read_fcf_conn_tbl(phba, rec_ptr); 7215 7216 } 7217 7218 /* 7219 * lpfc_error_lost_link - IO failure from link event or FW reset check. 7220 * 7221 * @vport: Pointer to lpfc_vport data structure. 7222 * @ulp_status: IO completion status. 7223 * @ulp_word4: Reason code for the ulp_status. 7224 * 7225 * This function evaluates the ulp_status and ulp_word4 values 7226 * for specific error values that indicate an internal link fault 7227 * or fw reset event for the completing IO. Callers require this 7228 * common data to decide next steps on the IO. 7229 * 7230 * Return: 7231 * false - No link or reset error occurred. 7232 * true - A link or reset error occurred. 7233 */ 7234 bool 7235 lpfc_error_lost_link(struct lpfc_vport *vport, u32 ulp_status, u32 ulp_word4) 7236 { 7237 /* Mask off the extra port data to get just the reason code. */ 7238 u32 rsn_code = IOERR_PARAM_MASK & ulp_word4; 7239 7240 if (ulp_status == IOSTAT_LOCAL_REJECT && 7241 (rsn_code == IOERR_SLI_ABORTED || 7242 rsn_code == IOERR_LINK_DOWN || 7243 rsn_code == IOERR_SLI_DOWN)) { 7244 lpfc_printf_vlog(vport, KERN_WARNING, LOG_SLI | LOG_ELS, 7245 "0408 Report link error true: <x%x:x%x>\n", 7246 ulp_status, ulp_word4); 7247 return true; 7248 } 7249 7250 return false; 7251 } 7252