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