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 drop_initial_node_ref = 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 /* Only 1 thread can drop the initial node reference. 192 * If not registered for NVME and NLP_DROPPED flag is 193 * clear, remove the initial reference. 194 */ 195 if (!(ndlp->fc4_xpt_flags & NVME_XPT_REGD)) 196 if (!test_and_set_bit(NLP_DROPPED, &ndlp->nlp_flag)) 197 drop_initial_node_ref = true; 198 199 /* The scsi_transport is done with the rport so lpfc cannot 200 * call to unregister. 201 */ 202 if (ndlp->fc4_xpt_flags & SCSI_XPT_REGD) { 203 ndlp->fc4_xpt_flags &= ~SCSI_XPT_REGD; 204 205 /* If NLP_XPT_REGD was cleared in lpfc_nlp_unreg_node, 206 * unregister calls were made to the scsi and nvme 207 * transports and refcnt was already decremented. Clear 208 * the NLP_XPT_REGD flag only if the NVME nrport is 209 * confirmed unregistered. 210 */ 211 if (ndlp->fc4_xpt_flags & NLP_XPT_REGD) { 212 if (!(ndlp->fc4_xpt_flags & NVME_XPT_REGD)) 213 ndlp->fc4_xpt_flags &= ~NLP_XPT_REGD; 214 spin_unlock_irqrestore(&ndlp->lock, iflags); 215 216 /* Release scsi transport reference */ 217 lpfc_nlp_put(ndlp); 218 } else { 219 spin_unlock_irqrestore(&ndlp->lock, iflags); 220 } 221 } else { 222 spin_unlock_irqrestore(&ndlp->lock, iflags); 223 } 224 225 if (drop_initial_node_ref) 226 lpfc_nlp_put(ndlp); 227 return; 228 } 229 230 if (ndlp->nlp_state == NLP_STE_MAPPED_NODE) 231 return; 232 233 /* Ignore callback for a mismatched (stale) rport */ 234 if (ndlp->rport != rport) { 235 lpfc_vlog_msg(vport, KERN_WARNING, LOG_NODE, 236 "6788 fc rport mismatch: d_id x%06x ndlp x%px " 237 "fc rport x%px node rport x%px state x%x " 238 "refcnt %u\n", 239 ndlp->nlp_DID, ndlp, rport, ndlp->rport, 240 ndlp->nlp_state, kref_read(&ndlp->kref)); 241 return; 242 } 243 244 if (rport->port_name != wwn_to_u64(ndlp->nlp_portname.u.wwn)) 245 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 246 "6789 rport name %llx != node port name %llx", 247 rport->port_name, 248 wwn_to_u64(ndlp->nlp_portname.u.wwn)); 249 250 evtp = &ndlp->dev_loss_evt; 251 252 if (!list_empty(&evtp->evt_listp)) { 253 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 254 "6790 rport name %llx dev_loss_evt pending\n", 255 rport->port_name); 256 return; 257 } 258 259 set_bit(NLP_IN_DEV_LOSS, &ndlp->nlp_flag); 260 261 spin_lock_irqsave(&ndlp->lock, iflags); 262 /* If there is a PLOGI in progress, and we are in a 263 * NLP_NPR_2B_DISC state, don't turn off the flag. 264 */ 265 if (ndlp->nlp_state != NLP_STE_PLOGI_ISSUE) 266 clear_bit(NLP_NPR_2B_DISC, &ndlp->nlp_flag); 267 268 /* 269 * The backend does not expect any more calls associated with this 270 * rport. Remove the association between rport and ndlp. 271 */ 272 ndlp->fc4_xpt_flags &= ~SCSI_XPT_REGD; 273 ((struct lpfc_rport_data *)rport->dd_data)->pnode = NULL; 274 ndlp->rport = NULL; 275 spin_unlock_irqrestore(&ndlp->lock, iflags); 276 277 if (phba->worker_thread) { 278 /* We need to hold the node by incrementing the reference 279 * count until this queued work is done 280 */ 281 evtp->evt_arg1 = lpfc_nlp_get(ndlp); 282 283 spin_lock_irqsave(&phba->hbalock, iflags); 284 if (evtp->evt_arg1) { 285 evtp->evt = LPFC_EVT_DEV_LOSS; 286 list_add_tail(&evtp->evt_listp, &phba->work_list); 287 spin_unlock_irqrestore(&phba->hbalock, iflags); 288 lpfc_worker_wake_up(phba); 289 return; 290 } 291 spin_unlock_irqrestore(&phba->hbalock, iflags); 292 } else { 293 lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_NODE, 294 "3188 worker thread is stopped %s x%06x, " 295 " rport x%px flg x%lx load_flag x%lx refcnt " 296 "%d\n", __func__, ndlp->nlp_DID, 297 ndlp->rport, ndlp->nlp_flag, 298 vport->load_flag, kref_read(&ndlp->kref)); 299 if (!(ndlp->fc4_xpt_flags & NVME_XPT_REGD)) { 300 /* Node is in dev loss. No further transaction. */ 301 clear_bit(NLP_IN_DEV_LOSS, &ndlp->nlp_flag); 302 lpfc_disc_state_machine(vport, ndlp, NULL, 303 NLP_EVT_DEVICE_RM); 304 } 305 } 306 } 307 308 /** 309 * lpfc_check_inactive_vmid_one - VMID inactivity checker for a vport 310 * @vport: Pointer to vport context object. 311 * 312 * This function checks for idle VMID entries related to a particular vport. If 313 * found unused/idle, free them accordingly. 314 **/ 315 static void lpfc_check_inactive_vmid_one(struct lpfc_vport *vport) 316 { 317 u16 keep; 318 u32 difftime = 0, r, bucket; 319 u64 *lta; 320 int cpu; 321 struct lpfc_vmid *vmp; 322 323 write_lock(&vport->vmid_lock); 324 325 if (!vport->cur_vmid_cnt) 326 goto out; 327 328 /* iterate through the table */ 329 hash_for_each(vport->hash_table, bucket, vmp, hnode) { 330 keep = 0; 331 if (vmp->flag & LPFC_VMID_REGISTERED) { 332 /* check if the particular VMID is in use */ 333 /* for all available per cpu variable */ 334 for_each_possible_cpu(cpu) { 335 /* if last access time is less than timeout */ 336 lta = per_cpu_ptr(vmp->last_io_time, cpu); 337 if (!lta) 338 continue; 339 difftime = (jiffies) - (*lta); 340 if ((vport->vmid_inactivity_timeout * 341 JIFFIES_PER_HR) > difftime) { 342 keep = 1; 343 break; 344 } 345 } 346 347 /* if none of the cpus have been used by the vm, */ 348 /* remove the entry if already registered */ 349 if (!keep) { 350 /* mark the entry for deregistration */ 351 vmp->flag = LPFC_VMID_DE_REGISTER; 352 write_unlock(&vport->vmid_lock); 353 if (vport->vmid_priority_tagging) 354 r = lpfc_vmid_uvem(vport, vmp, false); 355 else 356 r = lpfc_vmid_cmd(vport, 357 SLI_CTAS_DAPP_IDENT, 358 vmp); 359 360 /* decrement number of active vms and mark */ 361 /* entry in slot as free */ 362 write_lock(&vport->vmid_lock); 363 if (!r) { 364 struct lpfc_vmid *ht = vmp; 365 366 vport->cur_vmid_cnt--; 367 ht->flag = LPFC_VMID_SLOT_FREE; 368 free_percpu(ht->last_io_time); 369 ht->last_io_time = NULL; 370 hash_del(&ht->hnode); 371 } 372 } 373 } 374 } 375 out: 376 write_unlock(&vport->vmid_lock); 377 } 378 379 /** 380 * lpfc_check_inactive_vmid - VMID inactivity checker 381 * @phba: Pointer to hba context object. 382 * 383 * This function is called from the worker thread to determine if an entry in 384 * the VMID table can be released since there was no I/O activity seen from that 385 * particular VM for the specified time. When this happens, the entry in the 386 * table is released and also the resources on the switch cleared. 387 **/ 388 389 static void lpfc_check_inactive_vmid(struct lpfc_hba *phba) 390 { 391 struct lpfc_vport *vport; 392 struct lpfc_vport **vports; 393 int i; 394 395 vports = lpfc_create_vport_work_array(phba); 396 if (!vports) 397 return; 398 399 for (i = 0; i <= phba->max_vports; i++) { 400 if ((!vports[i]) && (i == 0)) 401 vport = phba->pport; 402 else 403 vport = vports[i]; 404 if (!vport) 405 break; 406 407 lpfc_check_inactive_vmid_one(vport); 408 } 409 lpfc_destroy_vport_work_array(phba, vports); 410 } 411 412 /** 413 * lpfc_check_nlp_post_devloss - Check to restore ndlp refcnt after devloss 414 * @vport: Pointer to vport object. 415 * @ndlp: Pointer to remote node object. 416 * 417 * If NLP_IN_RECOV_POST_DEV_LOSS flag was set due to outstanding recovery of 418 * node during dev_loss_tmo processing, then this function restores the nlp_put 419 * kref decrement from lpfc_dev_loss_tmo_handler. 420 **/ 421 void 422 lpfc_check_nlp_post_devloss(struct lpfc_vport *vport, 423 struct lpfc_nodelist *ndlp) 424 { 425 if (test_and_clear_bit(NLP_IN_RECOV_POST_DEV_LOSS, &ndlp->save_flags)) { 426 lpfc_nlp_get(ndlp); 427 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY | LOG_NODE, 428 "8438 Devloss timeout reversed on DID x%x " 429 "refcnt %d ndlp %p flag x%lx " 430 "port_state = x%x\n", 431 ndlp->nlp_DID, kref_read(&ndlp->kref), ndlp, 432 ndlp->nlp_flag, vport->port_state); 433 } 434 } 435 436 /** 437 * lpfc_dev_loss_tmo_handler - Remote node devloss timeout handler 438 * @ndlp: Pointer to remote node object. 439 * 440 * This function is called from the worker thread when devloss timeout timer 441 * expires. For SLI4 host, this routine shall return 1 when at lease one 442 * remote node, including this @ndlp, is still in use of FCF; otherwise, this 443 * routine shall return 0 when there is no remote node is still in use of FCF 444 * when devloss timeout happened to this @ndlp. 445 **/ 446 static int 447 lpfc_dev_loss_tmo_handler(struct lpfc_nodelist *ndlp) 448 { 449 struct lpfc_vport *vport; 450 struct lpfc_hba *phba; 451 uint8_t *name; 452 int warn_on = 0; 453 int fcf_inuse = 0; 454 bool recovering = false; 455 struct fc_vport *fc_vport = NULL; 456 unsigned long iflags; 457 458 vport = ndlp->vport; 459 name = (uint8_t *)&ndlp->nlp_portname; 460 phba = vport->phba; 461 462 if (phba->sli_rev == LPFC_SLI_REV4) 463 fcf_inuse = lpfc_fcf_inuse(phba); 464 465 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT, 466 "rport devlosstmo:did:x%x type:x%x id:x%x", 467 ndlp->nlp_DID, ndlp->nlp_type, ndlp->nlp_sid); 468 469 lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_NODE, 470 "3182 %s x%06x, nflag x%lx xflags x%x refcnt %d\n", 471 __func__, ndlp->nlp_DID, ndlp->nlp_flag, 472 ndlp->fc4_xpt_flags, kref_read(&ndlp->kref)); 473 474 /* If the driver is recovering the rport, ignore devloss. */ 475 if (ndlp->nlp_state == NLP_STE_MAPPED_NODE) { 476 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, 477 "0284 Devloss timeout Ignored on " 478 "WWPN %x:%x:%x:%x:%x:%x:%x:%x " 479 "NPort x%x\n", 480 *name, *(name+1), *(name+2), *(name+3), 481 *(name+4), *(name+5), *(name+6), *(name+7), 482 ndlp->nlp_DID); 483 484 clear_bit(NLP_IN_DEV_LOSS, &ndlp->nlp_flag); 485 return fcf_inuse; 486 } 487 488 /* Fabric nodes are done. */ 489 if (ndlp->nlp_type & NLP_FABRIC) { 490 spin_lock_irqsave(&ndlp->lock, iflags); 491 492 /* The driver has to account for a race between any fabric 493 * node that's in recovery when dev_loss_tmo expires. When this 494 * happens, the driver has to allow node recovery. 495 */ 496 switch (ndlp->nlp_DID) { 497 case Fabric_DID: 498 fc_vport = vport->fc_vport; 499 if (fc_vport) { 500 /* NPIV path. */ 501 if (fc_vport->vport_state == 502 FC_VPORT_INITIALIZING) 503 recovering = true; 504 } else { 505 /* Physical port path. */ 506 if (test_bit(HBA_FLOGI_OUTSTANDING, 507 &phba->hba_flag)) 508 recovering = true; 509 } 510 break; 511 case Fabric_Cntl_DID: 512 if (test_bit(NLP_REG_LOGIN_SEND, &ndlp->nlp_flag)) 513 recovering = true; 514 break; 515 case FDMI_DID: 516 fallthrough; 517 case NameServer_DID: 518 if (ndlp->nlp_state >= NLP_STE_PLOGI_ISSUE && 519 ndlp->nlp_state <= NLP_STE_REG_LOGIN_ISSUE) 520 recovering = true; 521 break; 522 default: 523 /* Ensure the nlp_DID at least has the correct prefix. 524 * The fabric domain controller's last three nibbles 525 * vary so we handle it in the default case. 526 */ 527 if (ndlp->nlp_DID & Fabric_DID_MASK) { 528 if (ndlp->nlp_state >= NLP_STE_PLOGI_ISSUE && 529 ndlp->nlp_state <= NLP_STE_REG_LOGIN_ISSUE) 530 recovering = true; 531 } 532 break; 533 } 534 spin_unlock_irqrestore(&ndlp->lock, iflags); 535 536 /* Mark an NLP_IN_RECOV_POST_DEV_LOSS flag to know if reversing 537 * the following lpfc_nlp_put is necessary after fabric node is 538 * recovered. 539 */ 540 clear_bit(NLP_IN_DEV_LOSS, &ndlp->nlp_flag); 541 if (recovering) { 542 lpfc_printf_vlog(vport, KERN_INFO, 543 LOG_DISCOVERY | LOG_NODE, 544 "8436 Devloss timeout marked on " 545 "DID x%x refcnt %d ndlp %p " 546 "flag x%lx port_state = x%x\n", 547 ndlp->nlp_DID, kref_read(&ndlp->kref), 548 ndlp, ndlp->nlp_flag, 549 vport->port_state); 550 set_bit(NLP_IN_RECOV_POST_DEV_LOSS, &ndlp->save_flags); 551 return fcf_inuse; 552 } else if (ndlp->nlp_state == NLP_STE_UNMAPPED_NODE) { 553 /* Fabric node fully recovered before this dev_loss_tmo 554 * queue work is processed. Thus, ignore the 555 * dev_loss_tmo event. 556 */ 557 lpfc_printf_vlog(vport, KERN_INFO, 558 LOG_DISCOVERY | LOG_NODE, 559 "8437 Devloss timeout ignored on " 560 "DID x%x refcnt %d ndlp %p " 561 "flag x%lx port_state = x%x\n", 562 ndlp->nlp_DID, kref_read(&ndlp->kref), 563 ndlp, ndlp->nlp_flag, 564 vport->port_state); 565 return fcf_inuse; 566 } 567 568 lpfc_nlp_put(ndlp); 569 return fcf_inuse; 570 } 571 572 if (ndlp->nlp_sid != NLP_NO_SID) { 573 warn_on = 1; 574 lpfc_sli_abort_iocb(vport, ndlp->nlp_sid, 0, LPFC_CTX_TGT); 575 } 576 577 if (warn_on) { 578 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 579 "0203 Devloss timeout on " 580 "WWPN %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x " 581 "NPort x%06x Data: x%lx x%x x%x refcnt %d\n", 582 *name, *(name+1), *(name+2), *(name+3), 583 *(name+4), *(name+5), *(name+6), *(name+7), 584 ndlp->nlp_DID, ndlp->nlp_flag, 585 ndlp->nlp_state, ndlp->nlp_rpi, 586 kref_read(&ndlp->kref)); 587 } else { 588 lpfc_printf_vlog(vport, KERN_INFO, LOG_TRACE_EVENT, 589 "0204 Devloss timeout on " 590 "WWPN %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x " 591 "NPort x%06x Data: x%lx x%x x%x\n", 592 *name, *(name+1), *(name+2), *(name+3), 593 *(name+4), *(name+5), *(name+6), *(name+7), 594 ndlp->nlp_DID, ndlp->nlp_flag, 595 ndlp->nlp_state, ndlp->nlp_rpi); 596 } 597 clear_bit(NLP_IN_DEV_LOSS, &ndlp->nlp_flag); 598 599 /* If we are devloss, but we are in the process of rediscovering the 600 * ndlp, don't issue a NLP_EVT_DEVICE_RM event. 601 */ 602 if (ndlp->nlp_state >= NLP_STE_PLOGI_ISSUE && 603 ndlp->nlp_state <= NLP_STE_PRLI_ISSUE) { 604 return fcf_inuse; 605 } 606 607 if (!(ndlp->fc4_xpt_flags & NVME_XPT_REGD)) 608 lpfc_disc_state_machine(vport, ndlp, NULL, NLP_EVT_DEVICE_RM); 609 610 return fcf_inuse; 611 } 612 613 static void lpfc_check_vmid_qfpa_issue(struct lpfc_hba *phba) 614 { 615 struct lpfc_vport *vport; 616 struct lpfc_vport **vports; 617 int i; 618 619 vports = lpfc_create_vport_work_array(phba); 620 if (!vports) 621 return; 622 623 for (i = 0; i <= phba->max_vports; i++) { 624 if ((!vports[i]) && (i == 0)) 625 vport = phba->pport; 626 else 627 vport = vports[i]; 628 if (!vport) 629 break; 630 631 if (vport->vmid_flag & LPFC_VMID_ISSUE_QFPA) { 632 if (!lpfc_issue_els_qfpa(vport)) 633 vport->vmid_flag &= ~LPFC_VMID_ISSUE_QFPA; 634 } 635 } 636 lpfc_destroy_vport_work_array(phba, vports); 637 } 638 639 /** 640 * lpfc_sli4_post_dev_loss_tmo_handler - SLI4 post devloss timeout handler 641 * @phba: Pointer to hba context object. 642 * @fcf_inuse: SLI4 FCF in-use state reported from devloss timeout handler. 643 * @nlp_did: remote node identifer with devloss timeout. 644 * 645 * This function is called from the worker thread after invoking devloss 646 * timeout handler and releasing the reference count for the ndlp with 647 * which the devloss timeout was handled for SLI4 host. For the devloss 648 * timeout of the last remote node which had been in use of FCF, when this 649 * routine is invoked, it shall be guaranteed that none of the remote are 650 * in-use of FCF. When devloss timeout to the last remote using the FCF, 651 * if the FIP engine is neither in FCF table scan process nor roundrobin 652 * failover process, the in-use FCF shall be unregistered. If the FIP 653 * engine is in FCF discovery process, the devloss timeout state shall 654 * be set for either the FCF table scan process or roundrobin failover 655 * process to unregister the in-use FCF. 656 **/ 657 static void 658 lpfc_sli4_post_dev_loss_tmo_handler(struct lpfc_hba *phba, int fcf_inuse, 659 uint32_t nlp_did) 660 { 661 /* If devloss timeout happened to a remote node when FCF had no 662 * longer been in-use, do nothing. 663 */ 664 if (!fcf_inuse) 665 return; 666 667 if (test_bit(HBA_FIP_SUPPORT, &phba->hba_flag) && 668 !lpfc_fcf_inuse(phba)) { 669 spin_lock_irq(&phba->hbalock); 670 if (phba->fcf.fcf_flag & FCF_DISCOVERY) { 671 if (test_and_set_bit(HBA_DEVLOSS_TMO, 672 &phba->hba_flag)) { 673 spin_unlock_irq(&phba->hbalock); 674 return; 675 } 676 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 677 "2847 Last remote node (x%x) using " 678 "FCF devloss tmo\n", nlp_did); 679 } 680 if (phba->fcf.fcf_flag & FCF_REDISC_PROG) { 681 spin_unlock_irq(&phba->hbalock); 682 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 683 "2868 Devloss tmo to FCF rediscovery " 684 "in progress\n"); 685 return; 686 } 687 spin_unlock_irq(&phba->hbalock); 688 if (!test_bit(FCF_TS_INPROG, &phba->hba_flag) && 689 !test_bit(FCF_RR_INPROG, &phba->hba_flag)) { 690 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 691 "2869 Devloss tmo to idle FIP engine, " 692 "unreg in-use FCF and rescan.\n"); 693 /* Unregister in-use FCF and rescan */ 694 lpfc_unregister_fcf_rescan(phba); 695 return; 696 } 697 if (test_bit(FCF_TS_INPROG, &phba->hba_flag)) 698 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 699 "2870 FCF table scan in progress\n"); 700 if (test_bit(FCF_RR_INPROG, &phba->hba_flag)) 701 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 702 "2871 FLOGI roundrobin FCF failover " 703 "in progress\n"); 704 } 705 lpfc_unregister_unused_fcf(phba); 706 } 707 708 /** 709 * lpfc_alloc_fast_evt - Allocates data structure for posting event 710 * @phba: Pointer to hba context object. 711 * 712 * This function is called from the functions which need to post 713 * events from interrupt context. This function allocates data 714 * structure required for posting event. It also keeps track of 715 * number of events pending and prevent event storm when there are 716 * too many events. 717 **/ 718 struct lpfc_fast_path_event * 719 lpfc_alloc_fast_evt(struct lpfc_hba *phba) { 720 struct lpfc_fast_path_event *ret; 721 722 /* If there are lot of fast event do not exhaust memory due to this */ 723 if (atomic_read(&phba->fast_event_count) > LPFC_MAX_EVT_COUNT) 724 return NULL; 725 726 ret = kzalloc(sizeof(struct lpfc_fast_path_event), 727 GFP_ATOMIC); 728 if (ret) { 729 atomic_inc(&phba->fast_event_count); 730 INIT_LIST_HEAD(&ret->work_evt.evt_listp); 731 ret->work_evt.evt = LPFC_EVT_FASTPATH_MGMT_EVT; 732 } 733 return ret; 734 } 735 736 /** 737 * lpfc_free_fast_evt - Frees event data structure 738 * @phba: Pointer to hba context object. 739 * @evt: Event object which need to be freed. 740 * 741 * This function frees the data structure required for posting 742 * events. 743 **/ 744 void 745 lpfc_free_fast_evt(struct lpfc_hba *phba, 746 struct lpfc_fast_path_event *evt) { 747 748 atomic_dec(&phba->fast_event_count); 749 kfree(evt); 750 } 751 752 /** 753 * lpfc_send_fastpath_evt - Posts events generated from fast path 754 * @phba: Pointer to hba context object. 755 * @evtp: Event data structure. 756 * 757 * This function is called from worker thread, when the interrupt 758 * context need to post an event. This function posts the event 759 * to fc transport netlink interface. 760 **/ 761 static void 762 lpfc_send_fastpath_evt(struct lpfc_hba *phba, 763 struct lpfc_work_evt *evtp) 764 { 765 unsigned long evt_category, evt_sub_category; 766 struct lpfc_fast_path_event *fast_evt_data; 767 char *evt_data; 768 uint32_t evt_data_size; 769 struct Scsi_Host *shost; 770 771 fast_evt_data = container_of(evtp, struct lpfc_fast_path_event, 772 work_evt); 773 774 evt_category = (unsigned long) fast_evt_data->un.fabric_evt.event_type; 775 evt_sub_category = (unsigned long) fast_evt_data->un. 776 fabric_evt.subcategory; 777 shost = lpfc_shost_from_vport(fast_evt_data->vport); 778 if (evt_category == FC_REG_FABRIC_EVENT) { 779 if (evt_sub_category == LPFC_EVENT_FCPRDCHKERR) { 780 evt_data = (char *) &fast_evt_data->un.read_check_error; 781 evt_data_size = sizeof(fast_evt_data->un. 782 read_check_error); 783 } else if ((evt_sub_category == LPFC_EVENT_FABRIC_BUSY) || 784 (evt_sub_category == LPFC_EVENT_PORT_BUSY)) { 785 evt_data = (char *) &fast_evt_data->un.fabric_evt; 786 evt_data_size = sizeof(fast_evt_data->un.fabric_evt); 787 } else { 788 lpfc_free_fast_evt(phba, fast_evt_data); 789 return; 790 } 791 } else if (evt_category == FC_REG_SCSI_EVENT) { 792 switch (evt_sub_category) { 793 case LPFC_EVENT_QFULL: 794 case LPFC_EVENT_DEVBSY: 795 evt_data = (char *) &fast_evt_data->un.scsi_evt; 796 evt_data_size = sizeof(fast_evt_data->un.scsi_evt); 797 break; 798 case LPFC_EVENT_CHECK_COND: 799 evt_data = (char *) &fast_evt_data->un.check_cond_evt; 800 evt_data_size = sizeof(fast_evt_data->un. 801 check_cond_evt); 802 break; 803 case LPFC_EVENT_VARQUEDEPTH: 804 evt_data = (char *) &fast_evt_data->un.queue_depth_evt; 805 evt_data_size = sizeof(fast_evt_data->un. 806 queue_depth_evt); 807 break; 808 default: 809 lpfc_free_fast_evt(phba, fast_evt_data); 810 return; 811 } 812 } else { 813 lpfc_free_fast_evt(phba, fast_evt_data); 814 return; 815 } 816 817 if (phba->cfg_enable_fc4_type != LPFC_ENABLE_NVME) 818 fc_host_post_vendor_event(shost, 819 fc_get_event_number(), 820 evt_data_size, 821 evt_data, 822 LPFC_NL_VENDOR_ID); 823 824 lpfc_free_fast_evt(phba, fast_evt_data); 825 return; 826 } 827 828 static void 829 lpfc_work_list_done(struct lpfc_hba *phba) 830 { 831 struct lpfc_work_evt *evtp = NULL; 832 struct lpfc_nodelist *ndlp; 833 int free_evt; 834 int fcf_inuse; 835 uint32_t nlp_did; 836 bool hba_pci_err; 837 838 spin_lock_irq(&phba->hbalock); 839 while (!list_empty(&phba->work_list)) { 840 list_remove_head((&phba->work_list), evtp, typeof(*evtp), 841 evt_listp); 842 spin_unlock_irq(&phba->hbalock); 843 hba_pci_err = test_bit(HBA_PCI_ERR, &phba->bit_flags); 844 free_evt = 1; 845 switch (evtp->evt) { 846 case LPFC_EVT_ELS_RETRY: 847 ndlp = (struct lpfc_nodelist *) (evtp->evt_arg1); 848 if (!hba_pci_err) { 849 lpfc_els_retry_delay_handler(ndlp); 850 free_evt = 0; /* evt is part of ndlp */ 851 } 852 /* decrement the node reference count held 853 * for this queued work 854 */ 855 lpfc_nlp_put(ndlp); 856 break; 857 case LPFC_EVT_DEV_LOSS: 858 ndlp = (struct lpfc_nodelist *)(evtp->evt_arg1); 859 fcf_inuse = lpfc_dev_loss_tmo_handler(ndlp); 860 free_evt = 0; 861 /* decrement the node reference count held for 862 * this queued work 863 */ 864 nlp_did = ndlp->nlp_DID; 865 lpfc_nlp_put(ndlp); 866 if (phba->sli_rev == LPFC_SLI_REV4) 867 lpfc_sli4_post_dev_loss_tmo_handler(phba, 868 fcf_inuse, 869 nlp_did); 870 break; 871 case LPFC_EVT_RECOVER_PORT: 872 ndlp = (struct lpfc_nodelist *)(evtp->evt_arg1); 873 if (!hba_pci_err) { 874 lpfc_sli_abts_recover_port(ndlp->vport, ndlp); 875 free_evt = 0; 876 } 877 /* decrement the node reference count held for 878 * this queued work 879 */ 880 lpfc_nlp_put(ndlp); 881 break; 882 case LPFC_EVT_ONLINE: 883 if (phba->link_state < LPFC_LINK_DOWN) 884 *(int *) (evtp->evt_arg1) = lpfc_online(phba); 885 else 886 *(int *) (evtp->evt_arg1) = 0; 887 complete((struct completion *)(evtp->evt_arg2)); 888 break; 889 case LPFC_EVT_OFFLINE_PREP: 890 if (phba->link_state >= LPFC_LINK_DOWN) 891 lpfc_offline_prep(phba, LPFC_MBX_WAIT); 892 *(int *)(evtp->evt_arg1) = 0; 893 complete((struct completion *)(evtp->evt_arg2)); 894 break; 895 case LPFC_EVT_OFFLINE: 896 lpfc_offline(phba); 897 lpfc_sli_brdrestart(phba); 898 *(int *)(evtp->evt_arg1) = 899 lpfc_sli_brdready(phba, HS_FFRDY | HS_MBRDY); 900 lpfc_unblock_mgmt_io(phba); 901 complete((struct completion *)(evtp->evt_arg2)); 902 break; 903 case LPFC_EVT_WARM_START: 904 lpfc_offline(phba); 905 lpfc_reset_barrier(phba); 906 lpfc_sli_brdreset(phba); 907 lpfc_hba_down_post(phba); 908 *(int *)(evtp->evt_arg1) = 909 lpfc_sli_brdready(phba, HS_MBRDY); 910 lpfc_unblock_mgmt_io(phba); 911 complete((struct completion *)(evtp->evt_arg2)); 912 break; 913 case LPFC_EVT_KILL: 914 lpfc_offline(phba); 915 *(int *)(evtp->evt_arg1) 916 = (phba->pport->stopped) 917 ? 0 : lpfc_sli_brdkill(phba); 918 lpfc_unblock_mgmt_io(phba); 919 complete((struct completion *)(evtp->evt_arg2)); 920 break; 921 case LPFC_EVT_FASTPATH_MGMT_EVT: 922 lpfc_send_fastpath_evt(phba, evtp); 923 free_evt = 0; 924 break; 925 case LPFC_EVT_RESET_HBA: 926 if (!test_bit(FC_UNLOADING, &phba->pport->load_flag)) 927 lpfc_reset_hba(phba); 928 break; 929 } 930 if (free_evt) 931 kfree(evtp); 932 spin_lock_irq(&phba->hbalock); 933 } 934 spin_unlock_irq(&phba->hbalock); 935 936 } 937 938 static void 939 lpfc_work_done(struct lpfc_hba *phba) 940 { 941 struct lpfc_sli_ring *pring; 942 uint32_t ha_copy, status, control, work_port_events; 943 struct lpfc_vport **vports; 944 struct lpfc_vport *vport; 945 int i; 946 bool hba_pci_err; 947 948 hba_pci_err = test_bit(HBA_PCI_ERR, &phba->bit_flags); 949 spin_lock_irq(&phba->hbalock); 950 ha_copy = phba->work_ha; 951 phba->work_ha = 0; 952 spin_unlock_irq(&phba->hbalock); 953 if (hba_pci_err) 954 ha_copy = 0; 955 956 /* First, try to post the next mailbox command to SLI4 device */ 957 if (phba->pci_dev_grp == LPFC_PCI_DEV_OC && !hba_pci_err) 958 lpfc_sli4_post_async_mbox(phba); 959 960 if (ha_copy & HA_ERATT) { 961 /* Handle the error attention event */ 962 lpfc_handle_eratt(phba); 963 964 if (phba->fw_dump_cmpl) { 965 complete(phba->fw_dump_cmpl); 966 phba->fw_dump_cmpl = NULL; 967 } 968 } 969 970 if (ha_copy & HA_MBATT) 971 lpfc_sli_handle_mb_event(phba); 972 973 if (ha_copy & HA_LATT) 974 lpfc_handle_latt(phba); 975 976 /* Handle VMID Events */ 977 if (lpfc_is_vmid_enabled(phba) && !hba_pci_err) { 978 if (phba->pport->work_port_events & 979 WORKER_CHECK_VMID_ISSUE_QFPA) { 980 lpfc_check_vmid_qfpa_issue(phba); 981 phba->pport->work_port_events &= 982 ~WORKER_CHECK_VMID_ISSUE_QFPA; 983 } 984 if (phba->pport->work_port_events & 985 WORKER_CHECK_INACTIVE_VMID) { 986 lpfc_check_inactive_vmid(phba); 987 phba->pport->work_port_events &= 988 ~WORKER_CHECK_INACTIVE_VMID; 989 } 990 } 991 992 /* Process SLI4 events */ 993 if (phba->pci_dev_grp == LPFC_PCI_DEV_OC) { 994 if (test_bit(HBA_RRQ_ACTIVE, &phba->hba_flag)) 995 lpfc_handle_rrq_active(phba); 996 if (test_bit(ELS_XRI_ABORT_EVENT, &phba->hba_flag)) 997 lpfc_sli4_els_xri_abort_event_proc(phba); 998 if (test_bit(ASYNC_EVENT, &phba->hba_flag)) 999 lpfc_sli4_async_event_proc(phba); 1000 if (test_and_clear_bit(HBA_POST_RECEIVE_BUFFER, 1001 &phba->hba_flag)) 1002 lpfc_sli_hbqbuf_add_hbqs(phba, LPFC_ELS_HBQ); 1003 if (phba->fcf.fcf_flag & FCF_REDISC_EVT) 1004 lpfc_sli4_fcf_redisc_event_proc(phba); 1005 } 1006 1007 vports = lpfc_create_vport_work_array(phba); 1008 if (vports != NULL) 1009 for (i = 0; i <= phba->max_vports; i++) { 1010 /* 1011 * We could have no vports in array if unloading, so if 1012 * this happens then just use the pport 1013 */ 1014 if (vports[i] == NULL && i == 0) 1015 vport = phba->pport; 1016 else 1017 vport = vports[i]; 1018 if (vport == NULL) 1019 break; 1020 spin_lock_irq(&vport->work_port_lock); 1021 work_port_events = vport->work_port_events; 1022 vport->work_port_events &= ~work_port_events; 1023 spin_unlock_irq(&vport->work_port_lock); 1024 if (hba_pci_err) 1025 continue; 1026 if (work_port_events & WORKER_DISC_TMO) 1027 lpfc_disc_timeout_handler(vport); 1028 if (work_port_events & WORKER_ELS_TMO) 1029 lpfc_els_timeout_handler(vport); 1030 if (work_port_events & WORKER_HB_TMO) 1031 lpfc_hb_timeout_handler(phba); 1032 if (work_port_events & WORKER_MBOX_TMO) 1033 lpfc_mbox_timeout_handler(phba); 1034 if (work_port_events & WORKER_FABRIC_BLOCK_TMO) 1035 lpfc_unblock_fabric_iocbs(phba); 1036 if (work_port_events & WORKER_RAMP_DOWN_QUEUE) 1037 lpfc_ramp_down_queue_handler(phba); 1038 if (work_port_events & WORKER_DELAYED_DISC_TMO) 1039 lpfc_delayed_disc_timeout_handler(vport); 1040 } 1041 lpfc_destroy_vport_work_array(phba, vports); 1042 1043 pring = lpfc_phba_elsring(phba); 1044 status = (ha_copy & (HA_RXMASK << (4*LPFC_ELS_RING))); 1045 status >>= (4*LPFC_ELS_RING); 1046 if (pring && (status & HA_RXMASK || 1047 pring->flag & LPFC_DEFERRED_RING_EVENT || 1048 test_bit(HBA_SP_QUEUE_EVT, &phba->hba_flag))) { 1049 if (pring->flag & LPFC_STOP_IOCB_EVENT) { 1050 pring->flag |= LPFC_DEFERRED_RING_EVENT; 1051 /* Preserve legacy behavior. */ 1052 if (!test_bit(HBA_SP_QUEUE_EVT, &phba->hba_flag)) 1053 set_bit(LPFC_DATA_READY, &phba->data_flags); 1054 } else { 1055 /* Driver could have abort request completed in queue 1056 * when link goes down. Allow for this transition. 1057 */ 1058 if (phba->link_state >= LPFC_LINK_DOWN || 1059 phba->link_flag & LS_MDS_LOOPBACK) { 1060 pring->flag &= ~LPFC_DEFERRED_RING_EVENT; 1061 lpfc_sli_handle_slow_ring_event(phba, pring, 1062 (status & 1063 HA_RXMASK)); 1064 } 1065 } 1066 if (phba->sli_rev == LPFC_SLI_REV4) 1067 lpfc_drain_txq(phba); 1068 /* 1069 * Turn on Ring interrupts 1070 */ 1071 if (phba->sli_rev <= LPFC_SLI_REV3) { 1072 spin_lock_irq(&phba->hbalock); 1073 control = readl(phba->HCregaddr); 1074 if (!(control & (HC_R0INT_ENA << LPFC_ELS_RING))) { 1075 lpfc_debugfs_slow_ring_trc(phba, 1076 "WRK Enable ring: cntl:x%x hacopy:x%x", 1077 control, ha_copy, 0); 1078 1079 control |= (HC_R0INT_ENA << LPFC_ELS_RING); 1080 writel(control, phba->HCregaddr); 1081 readl(phba->HCregaddr); /* flush */ 1082 } else { 1083 lpfc_debugfs_slow_ring_trc(phba, 1084 "WRK Ring ok: cntl:x%x hacopy:x%x", 1085 control, ha_copy, 0); 1086 } 1087 spin_unlock_irq(&phba->hbalock); 1088 } 1089 } 1090 lpfc_work_list_done(phba); 1091 } 1092 1093 int 1094 lpfc_do_work(void *p) 1095 { 1096 struct lpfc_hba *phba = p; 1097 int rc; 1098 1099 set_user_nice(current, MIN_NICE); 1100 current->flags |= PF_NOFREEZE; 1101 phba->data_flags = 0; 1102 1103 while (!kthread_should_stop()) { 1104 /* wait and check worker queue activities */ 1105 rc = wait_event_interruptible(phba->work_waitq, 1106 (test_and_clear_bit(LPFC_DATA_READY, 1107 &phba->data_flags) 1108 || kthread_should_stop())); 1109 /* Signal wakeup shall terminate the worker thread */ 1110 if (rc) { 1111 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 1112 "0433 Wakeup on signal: rc=x%x\n", rc); 1113 break; 1114 } 1115 1116 /* Attend pending lpfc data processing */ 1117 lpfc_work_done(phba); 1118 } 1119 phba->worker_thread = NULL; 1120 lpfc_printf_log(phba, KERN_INFO, LOG_ELS, 1121 "0432 Worker thread stopped.\n"); 1122 return 0; 1123 } 1124 1125 /* 1126 * This is only called to handle FC worker events. Since this a rare 1127 * occurrence, we allocate a struct lpfc_work_evt structure here instead of 1128 * embedding it in the IOCB. 1129 */ 1130 int 1131 lpfc_workq_post_event(struct lpfc_hba *phba, void *arg1, void *arg2, 1132 uint32_t evt) 1133 { 1134 struct lpfc_work_evt *evtp; 1135 unsigned long flags; 1136 1137 /* 1138 * All Mailbox completions and LPFC_ELS_RING rcv ring IOCB events will 1139 * be queued to worker thread for processing 1140 */ 1141 evtp = kmalloc(sizeof(struct lpfc_work_evt), GFP_ATOMIC); 1142 if (!evtp) 1143 return 0; 1144 1145 evtp->evt_arg1 = arg1; 1146 evtp->evt_arg2 = arg2; 1147 evtp->evt = evt; 1148 1149 spin_lock_irqsave(&phba->hbalock, flags); 1150 list_add_tail(&evtp->evt_listp, &phba->work_list); 1151 spin_unlock_irqrestore(&phba->hbalock, flags); 1152 1153 lpfc_worker_wake_up(phba); 1154 1155 return 1; 1156 } 1157 1158 void 1159 lpfc_cleanup_rpis(struct lpfc_vport *vport, int remove) 1160 { 1161 struct lpfc_hba *phba = vport->phba; 1162 struct lpfc_nodelist *ndlp, *next_ndlp; 1163 1164 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) { 1165 if ((phba->sli3_options & LPFC_SLI3_VPORT_TEARDOWN) || 1166 ((vport->port_type == LPFC_NPIV_PORT) && 1167 ((ndlp->nlp_DID == NameServer_DID) || 1168 (ndlp->nlp_DID == FDMI_DID) || 1169 (ndlp->nlp_DID == Fabric_Cntl_DID)))) 1170 lpfc_unreg_rpi(vport, ndlp); 1171 1172 /* Leave Fabric nodes alone on link down */ 1173 if ((phba->sli_rev < LPFC_SLI_REV4) && 1174 (!remove && ndlp->nlp_type & NLP_FABRIC)) 1175 continue; 1176 1177 /* Notify transport of connectivity loss to trigger cleanup. */ 1178 if (phba->nvmet_support && 1179 ndlp->nlp_state == NLP_STE_UNMAPPED_NODE) 1180 lpfc_nvmet_invalidate_host(phba, ndlp); 1181 1182 lpfc_disc_state_machine(vport, ndlp, NULL, 1183 remove 1184 ? NLP_EVT_DEVICE_RM 1185 : NLP_EVT_DEVICE_RECOVERY); 1186 } 1187 if (phba->sli3_options & LPFC_SLI3_VPORT_TEARDOWN) { 1188 if (phba->sli_rev == LPFC_SLI_REV4) 1189 lpfc_sli4_unreg_all_rpis(vport); 1190 lpfc_mbx_unreg_vpi(vport); 1191 set_bit(FC_VPORT_NEEDS_REG_VPI, &vport->fc_flag); 1192 } 1193 } 1194 1195 void 1196 lpfc_port_link_failure(struct lpfc_vport *vport) 1197 { 1198 lpfc_vport_set_state(vport, FC_VPORT_LINKDOWN); 1199 1200 /* Cleanup any outstanding received buffers */ 1201 lpfc_cleanup_rcv_buffers(vport); 1202 1203 /* Cleanup any outstanding RSCN activity */ 1204 lpfc_els_flush_rscn(vport); 1205 1206 /* Cleanup any outstanding ELS commands */ 1207 lpfc_els_flush_cmd(vport); 1208 1209 lpfc_cleanup_rpis(vport, 0); 1210 1211 /* Turn off discovery timer if its running */ 1212 lpfc_can_disctmo(vport); 1213 } 1214 1215 void 1216 lpfc_linkdown_port(struct lpfc_vport *vport) 1217 { 1218 struct lpfc_hba *phba = vport->phba; 1219 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 1220 1221 if (vport->cfg_enable_fc4_type != LPFC_ENABLE_NVME) 1222 fc_host_post_event(shost, fc_get_event_number(), 1223 FCH_EVT_LINKDOWN, 0); 1224 1225 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, 1226 "Link Down: state:x%x rtry:x%x flg:x%x", 1227 vport->port_state, vport->fc_ns_retry, vport->fc_flag); 1228 1229 lpfc_port_link_failure(vport); 1230 1231 /* Stop delayed Nport discovery */ 1232 clear_bit(FC_DISC_DELAYED, &vport->fc_flag); 1233 timer_delete_sync(&vport->delayed_disc_tmo); 1234 1235 if (phba->sli_rev == LPFC_SLI_REV4 && 1236 vport->port_type == LPFC_PHYSICAL_PORT && 1237 phba->sli4_hba.fawwpn_flag & LPFC_FAWWPN_CONFIG) { 1238 /* Assume success on link up */ 1239 phba->sli4_hba.fawwpn_flag |= LPFC_FAWWPN_FABRIC; 1240 } 1241 } 1242 1243 int 1244 lpfc_linkdown(struct lpfc_hba *phba) 1245 { 1246 struct lpfc_vport *vport = phba->pport; 1247 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 1248 struct lpfc_vport **vports; 1249 LPFC_MBOXQ_t *mb; 1250 int i; 1251 int offline; 1252 1253 if (phba->link_state == LPFC_LINK_DOWN) 1254 return 0; 1255 1256 /* Block all SCSI stack I/Os */ 1257 lpfc_scsi_dev_block(phba); 1258 offline = pci_channel_offline(phba->pcidev); 1259 1260 /* Decrement the held ndlp if there is a deferred flogi acc */ 1261 if (phba->defer_flogi_acc.flag) { 1262 if (phba->defer_flogi_acc.ndlp) { 1263 lpfc_nlp_put(phba->defer_flogi_acc.ndlp); 1264 phba->defer_flogi_acc.ndlp = NULL; 1265 } 1266 } 1267 phba->defer_flogi_acc.flag = false; 1268 1269 /* Clear external loopback plug detected flag */ 1270 phba->link_flag &= ~LS_EXTERNAL_LOOPBACK; 1271 1272 spin_lock_irq(&phba->hbalock); 1273 phba->fcf.fcf_flag &= ~(FCF_AVAILABLE | FCF_SCAN_DONE); 1274 spin_unlock_irq(&phba->hbalock); 1275 if (phba->link_state > LPFC_LINK_DOWN) { 1276 phba->link_state = LPFC_LINK_DOWN; 1277 if (phba->sli4_hba.conf_trunk) { 1278 phba->trunk_link.link0.state = 0; 1279 phba->trunk_link.link1.state = 0; 1280 phba->trunk_link.link2.state = 0; 1281 phba->trunk_link.link3.state = 0; 1282 phba->trunk_link.phy_lnk_speed = 1283 LPFC_LINK_SPEED_UNKNOWN; 1284 phba->sli4_hba.link_state.logical_speed = 1285 LPFC_LINK_SPEED_UNKNOWN; 1286 } 1287 clear_bit(FC_LBIT, &phba->pport->fc_flag); 1288 } 1289 vports = lpfc_create_vport_work_array(phba); 1290 if (vports != NULL) { 1291 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) { 1292 /* Issue a LINK DOWN event to all nodes */ 1293 lpfc_linkdown_port(vports[i]); 1294 1295 vports[i]->fc_myDID = 0; 1296 1297 if ((vport->cfg_enable_fc4_type == LPFC_ENABLE_BOTH) || 1298 (vport->cfg_enable_fc4_type == LPFC_ENABLE_NVME)) { 1299 if (phba->nvmet_support) 1300 lpfc_nvmet_update_targetport(phba); 1301 else 1302 lpfc_nvme_update_localport(vports[i]); 1303 } 1304 } 1305 } 1306 lpfc_destroy_vport_work_array(phba, vports); 1307 1308 /* Clean up any SLI3 firmware default rpi's */ 1309 if (phba->sli_rev > LPFC_SLI_REV3 || offline) 1310 goto skip_unreg_did; 1311 1312 mb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 1313 if (mb) { 1314 lpfc_unreg_did(phba, 0xffff, LPFC_UNREG_ALL_DFLT_RPIS, mb); 1315 mb->vport = vport; 1316 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl; 1317 if (lpfc_sli_issue_mbox(phba, mb, MBX_NOWAIT) 1318 == MBX_NOT_FINISHED) { 1319 mempool_free(mb, phba->mbox_mem_pool); 1320 } 1321 } 1322 1323 skip_unreg_did: 1324 /* Setup myDID for link up if we are in pt2pt mode */ 1325 if (test_bit(FC_PT2PT, &phba->pport->fc_flag)) { 1326 mb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 1327 if (mb) { 1328 lpfc_config_link(phba, mb); 1329 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl; 1330 mb->vport = vport; 1331 if (lpfc_sli_issue_mbox(phba, mb, MBX_NOWAIT) 1332 == MBX_NOT_FINISHED) { 1333 mempool_free(mb, phba->mbox_mem_pool); 1334 } 1335 } 1336 clear_bit(FC_PT2PT, &phba->pport->fc_flag); 1337 clear_bit(FC_PT2PT_PLOGI, &phba->pport->fc_flag); 1338 spin_lock_irq(shost->host_lock); 1339 phba->pport->rcv_flogi_cnt = 0; 1340 spin_unlock_irq(shost->host_lock); 1341 } 1342 return 0; 1343 } 1344 1345 static void 1346 lpfc_linkup_cleanup_nodes(struct lpfc_vport *vport) 1347 { 1348 struct lpfc_nodelist *ndlp; 1349 1350 list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) { 1351 ndlp->nlp_fc4_type &= ~(NLP_FC4_FCP | NLP_FC4_NVME); 1352 1353 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE) 1354 continue; 1355 if (ndlp->nlp_type & NLP_FABRIC) { 1356 /* On Linkup its safe to clean up the ndlp 1357 * from Fabric connections. 1358 */ 1359 if (ndlp->nlp_DID != Fabric_DID) 1360 lpfc_unreg_rpi(vport, ndlp); 1361 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE); 1362 } else if (!test_bit(NLP_NPR_ADISC, &ndlp->nlp_flag)) { 1363 /* Fail outstanding IO now since device is 1364 * marked for PLOGI. 1365 */ 1366 lpfc_unreg_rpi(vport, ndlp); 1367 } 1368 } 1369 } 1370 1371 static void 1372 lpfc_linkup_port(struct lpfc_vport *vport) 1373 { 1374 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 1375 struct lpfc_hba *phba = vport->phba; 1376 1377 if (test_bit(FC_UNLOADING, &vport->load_flag)) 1378 return; 1379 1380 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, 1381 "Link Up: top:x%x speed:x%x flg:x%x", 1382 phba->fc_topology, phba->fc_linkspeed, phba->link_flag); 1383 1384 /* If NPIV is not enabled, only bring the physical port up */ 1385 if (!(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) && 1386 (vport != phba->pport)) 1387 return; 1388 1389 if (phba->defer_flogi_acc.flag) { 1390 clear_bit(FC_ABORT_DISCOVERY, &vport->fc_flag); 1391 clear_bit(FC_RSCN_MODE, &vport->fc_flag); 1392 clear_bit(FC_NLP_MORE, &vport->fc_flag); 1393 clear_bit(FC_RSCN_DISCOVERY, &vport->fc_flag); 1394 } else { 1395 clear_bit(FC_PT2PT, &vport->fc_flag); 1396 clear_bit(FC_PT2PT_PLOGI, &vport->fc_flag); 1397 clear_bit(FC_ABORT_DISCOVERY, &vport->fc_flag); 1398 clear_bit(FC_RSCN_MODE, &vport->fc_flag); 1399 clear_bit(FC_NLP_MORE, &vport->fc_flag); 1400 clear_bit(FC_RSCN_DISCOVERY, &vport->fc_flag); 1401 } 1402 set_bit(FC_NDISC_ACTIVE, &vport->fc_flag); 1403 1404 spin_lock_irq(shost->host_lock); 1405 vport->fc_ns_retry = 0; 1406 spin_unlock_irq(shost->host_lock); 1407 lpfc_setup_fdmi_mask(vport); 1408 1409 lpfc_linkup_cleanup_nodes(vport); 1410 } 1411 1412 static int 1413 lpfc_linkup(struct lpfc_hba *phba) 1414 { 1415 struct lpfc_vport **vports; 1416 int i; 1417 struct Scsi_Host *shost = lpfc_shost_from_vport(phba->pport); 1418 1419 phba->link_state = LPFC_LINK_UP; 1420 1421 /* Unblock fabric iocbs if they are blocked */ 1422 clear_bit(FABRIC_COMANDS_BLOCKED, &phba->bit_flags); 1423 timer_delete_sync(&phba->fabric_block_timer); 1424 1425 vports = lpfc_create_vport_work_array(phba); 1426 if (vports != NULL) 1427 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) 1428 lpfc_linkup_port(vports[i]); 1429 lpfc_destroy_vport_work_array(phba, vports); 1430 1431 /* Clear the pport flogi counter in case the link down was 1432 * absorbed without an ACQE. No lock here - in worker thread 1433 * and discovery is synchronized. 1434 */ 1435 spin_lock_irq(shost->host_lock); 1436 phba->pport->rcv_flogi_cnt = 0; 1437 spin_unlock_irq(shost->host_lock); 1438 1439 /* reinitialize initial HBA flag */ 1440 clear_bit(HBA_FLOGI_ISSUED, &phba->hba_flag); 1441 clear_bit(HBA_RHBA_CMPL, &phba->hba_flag); 1442 1443 return 0; 1444 } 1445 1446 /* 1447 * This routine handles processing a CLEAR_LA mailbox 1448 * command upon completion. It is setup in the LPFC_MBOXQ 1449 * as the completion routine when the command is 1450 * handed off to the SLI layer. SLI3 only. 1451 */ 1452 static void 1453 lpfc_mbx_cmpl_clear_la(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 1454 { 1455 struct lpfc_vport *vport = pmb->vport; 1456 struct lpfc_sli *psli = &phba->sli; 1457 MAILBOX_t *mb = &pmb->u.mb; 1458 uint32_t control; 1459 1460 /* Since we don't do discovery right now, turn these off here */ 1461 psli->sli3_ring[LPFC_EXTRA_RING].flag &= ~LPFC_STOP_IOCB_EVENT; 1462 psli->sli3_ring[LPFC_FCP_RING].flag &= ~LPFC_STOP_IOCB_EVENT; 1463 1464 /* Check for error */ 1465 if ((mb->mbxStatus) && (mb->mbxStatus != 0x1601)) { 1466 /* CLEAR_LA mbox error <mbxStatus> state <hba_state> */ 1467 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 1468 "0320 CLEAR_LA mbxStatus error x%x hba " 1469 "state x%x\n", 1470 mb->mbxStatus, vport->port_state); 1471 phba->link_state = LPFC_HBA_ERROR; 1472 goto out; 1473 } 1474 1475 if (vport->port_type == LPFC_PHYSICAL_PORT) 1476 phba->link_state = LPFC_HBA_READY; 1477 1478 spin_lock_irq(&phba->hbalock); 1479 psli->sli_flag |= LPFC_PROCESS_LA; 1480 control = readl(phba->HCregaddr); 1481 control |= HC_LAINT_ENA; 1482 writel(control, phba->HCregaddr); 1483 readl(phba->HCregaddr); /* flush */ 1484 spin_unlock_irq(&phba->hbalock); 1485 mempool_free(pmb, phba->mbox_mem_pool); 1486 return; 1487 1488 out: 1489 /* Device Discovery completes */ 1490 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, 1491 "0225 Device Discovery completes\n"); 1492 mempool_free(pmb, phba->mbox_mem_pool); 1493 1494 clear_bit(FC_ABORT_DISCOVERY, &vport->fc_flag); 1495 1496 lpfc_can_disctmo(vport); 1497 1498 /* turn on Link Attention interrupts */ 1499 1500 spin_lock_irq(&phba->hbalock); 1501 psli->sli_flag |= LPFC_PROCESS_LA; 1502 control = readl(phba->HCregaddr); 1503 control |= HC_LAINT_ENA; 1504 writel(control, phba->HCregaddr); 1505 readl(phba->HCregaddr); /* flush */ 1506 spin_unlock_irq(&phba->hbalock); 1507 1508 return; 1509 } 1510 1511 void 1512 lpfc_mbx_cmpl_local_config_link(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 1513 { 1514 struct lpfc_vport *vport = pmb->vport; 1515 LPFC_MBOXQ_t *sparam_mb; 1516 u16 status = pmb->u.mb.mbxStatus; 1517 int rc; 1518 1519 mempool_free(pmb, phba->mbox_mem_pool); 1520 1521 if (status) 1522 goto out; 1523 1524 /* don't perform discovery for SLI4 loopback diagnostic test */ 1525 if ((phba->sli_rev == LPFC_SLI_REV4) && 1526 !test_bit(HBA_FCOE_MODE, &phba->hba_flag) && 1527 (phba->link_flag & LS_LOOPBACK_MODE)) 1528 return; 1529 1530 if (phba->fc_topology == LPFC_TOPOLOGY_LOOP && 1531 test_bit(FC_PUBLIC_LOOP, &vport->fc_flag) && 1532 !test_bit(FC_LBIT, &vport->fc_flag)) { 1533 /* Need to wait for FAN - use discovery timer 1534 * for timeout. port_state is identically 1535 * LPFC_LOCAL_CFG_LINK while waiting for FAN 1536 */ 1537 lpfc_set_disctmo(vport); 1538 return; 1539 } 1540 1541 /* Start discovery by sending a FLOGI. port_state is identically 1542 * LPFC_FLOGI while waiting for FLOGI cmpl. 1543 */ 1544 if (vport->port_state != LPFC_FLOGI) { 1545 /* Issue MBX_READ_SPARAM to update CSPs before FLOGI if 1546 * bb-credit recovery is in place. 1547 */ 1548 if (phba->bbcredit_support && phba->cfg_enable_bbcr && 1549 !(phba->link_flag & LS_LOOPBACK_MODE)) { 1550 sparam_mb = mempool_alloc(phba->mbox_mem_pool, 1551 GFP_KERNEL); 1552 if (!sparam_mb) 1553 goto sparam_out; 1554 1555 rc = lpfc_read_sparam(phba, sparam_mb, 0); 1556 if (rc) { 1557 mempool_free(sparam_mb, phba->mbox_mem_pool); 1558 goto sparam_out; 1559 } 1560 sparam_mb->vport = vport; 1561 sparam_mb->mbox_cmpl = lpfc_mbx_cmpl_read_sparam; 1562 rc = lpfc_sli_issue_mbox(phba, sparam_mb, MBX_NOWAIT); 1563 if (rc == MBX_NOT_FINISHED) { 1564 lpfc_mbox_rsrc_cleanup(phba, sparam_mb, 1565 MBOX_THD_UNLOCKED); 1566 goto sparam_out; 1567 } 1568 1569 set_bit(HBA_DEFER_FLOGI, &phba->hba_flag); 1570 } else { 1571 lpfc_initial_flogi(vport); 1572 } 1573 } else { 1574 if (test_bit(FC_PT2PT, &vport->fc_flag)) 1575 lpfc_disc_start(vport); 1576 } 1577 return; 1578 1579 out: 1580 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 1581 "0306 CONFIG_LINK mbxStatus error x%x HBA state x%x\n", 1582 status, vport->port_state); 1583 1584 sparam_out: 1585 lpfc_linkdown(phba); 1586 1587 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 1588 "0200 CONFIG_LINK bad hba state x%x\n", 1589 vport->port_state); 1590 1591 lpfc_issue_clear_la(phba, vport); 1592 return; 1593 } 1594 1595 /** 1596 * lpfc_sli4_clear_fcf_rr_bmask 1597 * @phba: pointer to the struct lpfc_hba for this port. 1598 * This fucnction resets the round robin bit mask and clears the 1599 * fcf priority list. The list deletions are done while holding the 1600 * hbalock. The ON_LIST flag and the FLOGI_FAILED flags are cleared 1601 * from the lpfc_fcf_pri record. 1602 **/ 1603 void 1604 lpfc_sli4_clear_fcf_rr_bmask(struct lpfc_hba *phba) 1605 { 1606 struct lpfc_fcf_pri *fcf_pri; 1607 struct lpfc_fcf_pri *next_fcf_pri; 1608 memset(phba->fcf.fcf_rr_bmask, 0, sizeof(*phba->fcf.fcf_rr_bmask)); 1609 spin_lock_irq(&phba->hbalock); 1610 list_for_each_entry_safe(fcf_pri, next_fcf_pri, 1611 &phba->fcf.fcf_pri_list, list) { 1612 list_del_init(&fcf_pri->list); 1613 fcf_pri->fcf_rec.flag = 0; 1614 } 1615 spin_unlock_irq(&phba->hbalock); 1616 } 1617 static void 1618 lpfc_mbx_cmpl_reg_fcfi(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq) 1619 { 1620 struct lpfc_vport *vport = mboxq->vport; 1621 1622 if (mboxq->u.mb.mbxStatus) { 1623 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 1624 "2017 REG_FCFI mbxStatus error x%x " 1625 "HBA state x%x\n", mboxq->u.mb.mbxStatus, 1626 vport->port_state); 1627 goto fail_out; 1628 } 1629 1630 /* Start FCoE discovery by sending a FLOGI. */ 1631 phba->fcf.fcfi = bf_get(lpfc_reg_fcfi_fcfi, &mboxq->u.mqe.un.reg_fcfi); 1632 /* Set the FCFI registered flag */ 1633 spin_lock_irq(&phba->hbalock); 1634 phba->fcf.fcf_flag |= FCF_REGISTERED; 1635 spin_unlock_irq(&phba->hbalock); 1636 1637 /* If there is a pending FCoE event, restart FCF table scan. */ 1638 if (!test_bit(FCF_RR_INPROG, &phba->hba_flag) && 1639 lpfc_check_pending_fcoe_event(phba, LPFC_UNREG_FCF)) 1640 goto fail_out; 1641 1642 /* Mark successful completion of FCF table scan */ 1643 spin_lock_irq(&phba->hbalock); 1644 phba->fcf.fcf_flag |= (FCF_SCAN_DONE | FCF_IN_USE); 1645 spin_unlock_irq(&phba->hbalock); 1646 clear_bit(FCF_TS_INPROG, &phba->hba_flag); 1647 if (vport->port_state != LPFC_FLOGI) { 1648 set_bit(FCF_RR_INPROG, &phba->hba_flag); 1649 lpfc_issue_init_vfi(vport); 1650 } 1651 goto out; 1652 1653 fail_out: 1654 clear_bit(FCF_RR_INPROG, &phba->hba_flag); 1655 out: 1656 mempool_free(mboxq, phba->mbox_mem_pool); 1657 } 1658 1659 /** 1660 * lpfc_fab_name_match - Check if the fcf fabric name match. 1661 * @fab_name: pointer to fabric name. 1662 * @new_fcf_record: pointer to fcf record. 1663 * 1664 * This routine compare the fcf record's fabric name with provided 1665 * fabric name. If the fabric name are identical this function 1666 * returns 1 else return 0. 1667 **/ 1668 static uint32_t 1669 lpfc_fab_name_match(uint8_t *fab_name, struct fcf_record *new_fcf_record) 1670 { 1671 if (fab_name[0] != bf_get(lpfc_fcf_record_fab_name_0, new_fcf_record)) 1672 return 0; 1673 if (fab_name[1] != bf_get(lpfc_fcf_record_fab_name_1, new_fcf_record)) 1674 return 0; 1675 if (fab_name[2] != bf_get(lpfc_fcf_record_fab_name_2, new_fcf_record)) 1676 return 0; 1677 if (fab_name[3] != bf_get(lpfc_fcf_record_fab_name_3, new_fcf_record)) 1678 return 0; 1679 if (fab_name[4] != bf_get(lpfc_fcf_record_fab_name_4, new_fcf_record)) 1680 return 0; 1681 if (fab_name[5] != bf_get(lpfc_fcf_record_fab_name_5, new_fcf_record)) 1682 return 0; 1683 if (fab_name[6] != bf_get(lpfc_fcf_record_fab_name_6, new_fcf_record)) 1684 return 0; 1685 if (fab_name[7] != bf_get(lpfc_fcf_record_fab_name_7, new_fcf_record)) 1686 return 0; 1687 return 1; 1688 } 1689 1690 /** 1691 * lpfc_sw_name_match - Check if the fcf switch name match. 1692 * @sw_name: pointer to switch name. 1693 * @new_fcf_record: pointer to fcf record. 1694 * 1695 * This routine compare the fcf record's switch name with provided 1696 * switch name. If the switch name are identical this function 1697 * returns 1 else return 0. 1698 **/ 1699 static uint32_t 1700 lpfc_sw_name_match(uint8_t *sw_name, struct fcf_record *new_fcf_record) 1701 { 1702 if (sw_name[0] != bf_get(lpfc_fcf_record_switch_name_0, new_fcf_record)) 1703 return 0; 1704 if (sw_name[1] != bf_get(lpfc_fcf_record_switch_name_1, new_fcf_record)) 1705 return 0; 1706 if (sw_name[2] != bf_get(lpfc_fcf_record_switch_name_2, new_fcf_record)) 1707 return 0; 1708 if (sw_name[3] != bf_get(lpfc_fcf_record_switch_name_3, new_fcf_record)) 1709 return 0; 1710 if (sw_name[4] != bf_get(lpfc_fcf_record_switch_name_4, new_fcf_record)) 1711 return 0; 1712 if (sw_name[5] != bf_get(lpfc_fcf_record_switch_name_5, new_fcf_record)) 1713 return 0; 1714 if (sw_name[6] != bf_get(lpfc_fcf_record_switch_name_6, new_fcf_record)) 1715 return 0; 1716 if (sw_name[7] != bf_get(lpfc_fcf_record_switch_name_7, new_fcf_record)) 1717 return 0; 1718 return 1; 1719 } 1720 1721 /** 1722 * lpfc_mac_addr_match - Check if the fcf mac address match. 1723 * @mac_addr: pointer to mac address. 1724 * @new_fcf_record: pointer to fcf record. 1725 * 1726 * This routine compare the fcf record's mac address with HBA's 1727 * FCF mac address. If the mac addresses are identical this function 1728 * returns 1 else return 0. 1729 **/ 1730 static uint32_t 1731 lpfc_mac_addr_match(uint8_t *mac_addr, struct fcf_record *new_fcf_record) 1732 { 1733 if (mac_addr[0] != bf_get(lpfc_fcf_record_mac_0, new_fcf_record)) 1734 return 0; 1735 if (mac_addr[1] != bf_get(lpfc_fcf_record_mac_1, new_fcf_record)) 1736 return 0; 1737 if (mac_addr[2] != bf_get(lpfc_fcf_record_mac_2, new_fcf_record)) 1738 return 0; 1739 if (mac_addr[3] != bf_get(lpfc_fcf_record_mac_3, new_fcf_record)) 1740 return 0; 1741 if (mac_addr[4] != bf_get(lpfc_fcf_record_mac_4, new_fcf_record)) 1742 return 0; 1743 if (mac_addr[5] != bf_get(lpfc_fcf_record_mac_5, new_fcf_record)) 1744 return 0; 1745 return 1; 1746 } 1747 1748 static bool 1749 lpfc_vlan_id_match(uint16_t curr_vlan_id, uint16_t new_vlan_id) 1750 { 1751 return (curr_vlan_id == new_vlan_id); 1752 } 1753 1754 /** 1755 * __lpfc_update_fcf_record_pri - update the lpfc_fcf_pri record. 1756 * @phba: pointer to lpfc hba data structure. 1757 * @fcf_index: Index for the lpfc_fcf_record. 1758 * @new_fcf_record: pointer to hba fcf record. 1759 * 1760 * This routine updates the driver FCF priority record from the new HBA FCF 1761 * record. The hbalock is asserted held in the code path calling this 1762 * routine. 1763 **/ 1764 static void 1765 __lpfc_update_fcf_record_pri(struct lpfc_hba *phba, uint16_t fcf_index, 1766 struct fcf_record *new_fcf_record 1767 ) 1768 { 1769 struct lpfc_fcf_pri *fcf_pri; 1770 1771 fcf_pri = &phba->fcf.fcf_pri[fcf_index]; 1772 fcf_pri->fcf_rec.fcf_index = fcf_index; 1773 /* FCF record priority */ 1774 fcf_pri->fcf_rec.priority = new_fcf_record->fip_priority; 1775 1776 } 1777 1778 /** 1779 * lpfc_copy_fcf_record - Copy fcf information to lpfc_hba. 1780 * @fcf_rec: pointer to driver fcf record. 1781 * @new_fcf_record: pointer to fcf record. 1782 * 1783 * This routine copies the FCF information from the FCF 1784 * record to lpfc_hba data structure. 1785 **/ 1786 static void 1787 lpfc_copy_fcf_record(struct lpfc_fcf_rec *fcf_rec, 1788 struct fcf_record *new_fcf_record) 1789 { 1790 /* Fabric name */ 1791 fcf_rec->fabric_name[0] = 1792 bf_get(lpfc_fcf_record_fab_name_0, new_fcf_record); 1793 fcf_rec->fabric_name[1] = 1794 bf_get(lpfc_fcf_record_fab_name_1, new_fcf_record); 1795 fcf_rec->fabric_name[2] = 1796 bf_get(lpfc_fcf_record_fab_name_2, new_fcf_record); 1797 fcf_rec->fabric_name[3] = 1798 bf_get(lpfc_fcf_record_fab_name_3, new_fcf_record); 1799 fcf_rec->fabric_name[4] = 1800 bf_get(lpfc_fcf_record_fab_name_4, new_fcf_record); 1801 fcf_rec->fabric_name[5] = 1802 bf_get(lpfc_fcf_record_fab_name_5, new_fcf_record); 1803 fcf_rec->fabric_name[6] = 1804 bf_get(lpfc_fcf_record_fab_name_6, new_fcf_record); 1805 fcf_rec->fabric_name[7] = 1806 bf_get(lpfc_fcf_record_fab_name_7, new_fcf_record); 1807 /* Mac address */ 1808 fcf_rec->mac_addr[0] = bf_get(lpfc_fcf_record_mac_0, new_fcf_record); 1809 fcf_rec->mac_addr[1] = bf_get(lpfc_fcf_record_mac_1, new_fcf_record); 1810 fcf_rec->mac_addr[2] = bf_get(lpfc_fcf_record_mac_2, new_fcf_record); 1811 fcf_rec->mac_addr[3] = bf_get(lpfc_fcf_record_mac_3, new_fcf_record); 1812 fcf_rec->mac_addr[4] = bf_get(lpfc_fcf_record_mac_4, new_fcf_record); 1813 fcf_rec->mac_addr[5] = bf_get(lpfc_fcf_record_mac_5, new_fcf_record); 1814 /* FCF record index */ 1815 fcf_rec->fcf_indx = bf_get(lpfc_fcf_record_fcf_index, new_fcf_record); 1816 /* FCF record priority */ 1817 fcf_rec->priority = new_fcf_record->fip_priority; 1818 /* Switch name */ 1819 fcf_rec->switch_name[0] = 1820 bf_get(lpfc_fcf_record_switch_name_0, new_fcf_record); 1821 fcf_rec->switch_name[1] = 1822 bf_get(lpfc_fcf_record_switch_name_1, new_fcf_record); 1823 fcf_rec->switch_name[2] = 1824 bf_get(lpfc_fcf_record_switch_name_2, new_fcf_record); 1825 fcf_rec->switch_name[3] = 1826 bf_get(lpfc_fcf_record_switch_name_3, new_fcf_record); 1827 fcf_rec->switch_name[4] = 1828 bf_get(lpfc_fcf_record_switch_name_4, new_fcf_record); 1829 fcf_rec->switch_name[5] = 1830 bf_get(lpfc_fcf_record_switch_name_5, new_fcf_record); 1831 fcf_rec->switch_name[6] = 1832 bf_get(lpfc_fcf_record_switch_name_6, new_fcf_record); 1833 fcf_rec->switch_name[7] = 1834 bf_get(lpfc_fcf_record_switch_name_7, new_fcf_record); 1835 } 1836 1837 /** 1838 * __lpfc_update_fcf_record - Update driver fcf record 1839 * @phba: pointer to lpfc hba data structure. 1840 * @fcf_rec: pointer to driver fcf record. 1841 * @new_fcf_record: pointer to hba fcf record. 1842 * @addr_mode: address mode to be set to the driver fcf record. 1843 * @vlan_id: vlan tag to be set to the driver fcf record. 1844 * @flag: flag bits to be set to the driver fcf record. 1845 * 1846 * This routine updates the driver FCF record from the new HBA FCF record 1847 * together with the address mode, vlan_id, and other informations. This 1848 * routine is called with the hbalock held. 1849 **/ 1850 static void 1851 __lpfc_update_fcf_record(struct lpfc_hba *phba, struct lpfc_fcf_rec *fcf_rec, 1852 struct fcf_record *new_fcf_record, uint32_t addr_mode, 1853 uint16_t vlan_id, uint32_t flag) 1854 { 1855 lockdep_assert_held(&phba->hbalock); 1856 1857 /* Copy the fields from the HBA's FCF record */ 1858 lpfc_copy_fcf_record(fcf_rec, new_fcf_record); 1859 /* Update other fields of driver FCF record */ 1860 fcf_rec->addr_mode = addr_mode; 1861 fcf_rec->vlan_id = vlan_id; 1862 fcf_rec->flag |= (flag | RECORD_VALID); 1863 __lpfc_update_fcf_record_pri(phba, 1864 bf_get(lpfc_fcf_record_fcf_index, new_fcf_record), 1865 new_fcf_record); 1866 } 1867 1868 /** 1869 * lpfc_register_fcf - Register the FCF with hba. 1870 * @phba: pointer to lpfc hba data structure. 1871 * 1872 * This routine issues a register fcfi mailbox command to register 1873 * the fcf with HBA. 1874 **/ 1875 static void 1876 lpfc_register_fcf(struct lpfc_hba *phba) 1877 { 1878 LPFC_MBOXQ_t *fcf_mbxq; 1879 int rc; 1880 1881 spin_lock_irq(&phba->hbalock); 1882 /* If the FCF is not available do nothing. */ 1883 if (!(phba->fcf.fcf_flag & FCF_AVAILABLE)) { 1884 spin_unlock_irq(&phba->hbalock); 1885 clear_bit(FCF_TS_INPROG, &phba->hba_flag); 1886 clear_bit(FCF_RR_INPROG, &phba->hba_flag); 1887 return; 1888 } 1889 1890 /* The FCF is already registered, start discovery */ 1891 if (phba->fcf.fcf_flag & FCF_REGISTERED) { 1892 phba->fcf.fcf_flag |= (FCF_SCAN_DONE | FCF_IN_USE); 1893 spin_unlock_irq(&phba->hbalock); 1894 clear_bit(FCF_TS_INPROG, &phba->hba_flag); 1895 if (phba->pport->port_state != LPFC_FLOGI && 1896 test_bit(FC_FABRIC, &phba->pport->fc_flag)) { 1897 set_bit(FCF_RR_INPROG, &phba->hba_flag); 1898 lpfc_initial_flogi(phba->pport); 1899 return; 1900 } 1901 return; 1902 } 1903 spin_unlock_irq(&phba->hbalock); 1904 1905 fcf_mbxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 1906 if (!fcf_mbxq) { 1907 clear_bit(FCF_TS_INPROG, &phba->hba_flag); 1908 clear_bit(FCF_RR_INPROG, &phba->hba_flag); 1909 return; 1910 } 1911 1912 lpfc_reg_fcfi(phba, fcf_mbxq); 1913 fcf_mbxq->vport = phba->pport; 1914 fcf_mbxq->mbox_cmpl = lpfc_mbx_cmpl_reg_fcfi; 1915 rc = lpfc_sli_issue_mbox(phba, fcf_mbxq, MBX_NOWAIT); 1916 if (rc == MBX_NOT_FINISHED) { 1917 clear_bit(FCF_TS_INPROG, &phba->hba_flag); 1918 clear_bit(FCF_RR_INPROG, &phba->hba_flag); 1919 mempool_free(fcf_mbxq, phba->mbox_mem_pool); 1920 } 1921 1922 return; 1923 } 1924 1925 /** 1926 * lpfc_match_fcf_conn_list - Check if the FCF record can be used for discovery. 1927 * @phba: pointer to lpfc hba data structure. 1928 * @new_fcf_record: pointer to fcf record. 1929 * @boot_flag: Indicates if this record used by boot bios. 1930 * @addr_mode: The address mode to be used by this FCF 1931 * @vlan_id: The vlan id to be used as vlan tagging by this FCF. 1932 * 1933 * This routine compare the fcf record with connect list obtained from the 1934 * config region to decide if this FCF can be used for SAN discovery. It returns 1935 * 1 if this record can be used for SAN discovery else return zero. If this FCF 1936 * record can be used for SAN discovery, the boot_flag will indicate if this FCF 1937 * is used by boot bios and addr_mode will indicate the addressing mode to be 1938 * used for this FCF when the function returns. 1939 * If the FCF record need to be used with a particular vlan id, the vlan is 1940 * set in the vlan_id on return of the function. If not VLAN tagging need to 1941 * be used with the FCF vlan_id will be set to LPFC_FCOE_NULL_VID; 1942 **/ 1943 static int 1944 lpfc_match_fcf_conn_list(struct lpfc_hba *phba, 1945 struct fcf_record *new_fcf_record, 1946 uint32_t *boot_flag, uint32_t *addr_mode, 1947 uint16_t *vlan_id) 1948 { 1949 struct lpfc_fcf_conn_entry *conn_entry; 1950 int i, j, fcf_vlan_id = 0; 1951 1952 /* Find the lowest VLAN id in the FCF record */ 1953 for (i = 0; i < 512; i++) { 1954 if (new_fcf_record->vlan_bitmap[i]) { 1955 fcf_vlan_id = i * 8; 1956 j = 0; 1957 while (!((new_fcf_record->vlan_bitmap[i] >> j) & 1)) { 1958 j++; 1959 fcf_vlan_id++; 1960 } 1961 break; 1962 } 1963 } 1964 1965 /* FCF not valid/available or solicitation in progress */ 1966 if (!bf_get(lpfc_fcf_record_fcf_avail, new_fcf_record) || 1967 !bf_get(lpfc_fcf_record_fcf_valid, new_fcf_record) || 1968 bf_get(lpfc_fcf_record_fcf_sol, new_fcf_record)) 1969 return 0; 1970 1971 if (!test_bit(HBA_FIP_SUPPORT, &phba->hba_flag)) { 1972 *boot_flag = 0; 1973 *addr_mode = bf_get(lpfc_fcf_record_mac_addr_prov, 1974 new_fcf_record); 1975 if (phba->valid_vlan) 1976 *vlan_id = phba->vlan_id; 1977 else 1978 *vlan_id = LPFC_FCOE_NULL_VID; 1979 return 1; 1980 } 1981 1982 /* 1983 * If there are no FCF connection table entry, driver connect to all 1984 * FCFs. 1985 */ 1986 if (list_empty(&phba->fcf_conn_rec_list)) { 1987 *boot_flag = 0; 1988 *addr_mode = bf_get(lpfc_fcf_record_mac_addr_prov, 1989 new_fcf_record); 1990 1991 /* 1992 * When there are no FCF connect entries, use driver's default 1993 * addressing mode - FPMA. 1994 */ 1995 if (*addr_mode & LPFC_FCF_FPMA) 1996 *addr_mode = LPFC_FCF_FPMA; 1997 1998 /* If FCF record report a vlan id use that vlan id */ 1999 if (fcf_vlan_id) 2000 *vlan_id = fcf_vlan_id; 2001 else 2002 *vlan_id = LPFC_FCOE_NULL_VID; 2003 return 1; 2004 } 2005 2006 list_for_each_entry(conn_entry, 2007 &phba->fcf_conn_rec_list, list) { 2008 if (!(conn_entry->conn_rec.flags & FCFCNCT_VALID)) 2009 continue; 2010 2011 if ((conn_entry->conn_rec.flags & FCFCNCT_FBNM_VALID) && 2012 !lpfc_fab_name_match(conn_entry->conn_rec.fabric_name, 2013 new_fcf_record)) 2014 continue; 2015 if ((conn_entry->conn_rec.flags & FCFCNCT_SWNM_VALID) && 2016 !lpfc_sw_name_match(conn_entry->conn_rec.switch_name, 2017 new_fcf_record)) 2018 continue; 2019 if (conn_entry->conn_rec.flags & FCFCNCT_VLAN_VALID) { 2020 /* 2021 * If the vlan bit map does not have the bit set for the 2022 * vlan id to be used, then it is not a match. 2023 */ 2024 if (!(new_fcf_record->vlan_bitmap 2025 [conn_entry->conn_rec.vlan_tag / 8] & 2026 (1 << (conn_entry->conn_rec.vlan_tag % 8)))) 2027 continue; 2028 } 2029 2030 /* 2031 * If connection record does not support any addressing mode, 2032 * skip the FCF record. 2033 */ 2034 if (!(bf_get(lpfc_fcf_record_mac_addr_prov, new_fcf_record) 2035 & (LPFC_FCF_FPMA | LPFC_FCF_SPMA))) 2036 continue; 2037 2038 /* 2039 * Check if the connection record specifies a required 2040 * addressing mode. 2041 */ 2042 if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) && 2043 !(conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED)) { 2044 2045 /* 2046 * If SPMA required but FCF not support this continue. 2047 */ 2048 if ((conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) && 2049 !(bf_get(lpfc_fcf_record_mac_addr_prov, 2050 new_fcf_record) & LPFC_FCF_SPMA)) 2051 continue; 2052 2053 /* 2054 * If FPMA required but FCF not support this continue. 2055 */ 2056 if (!(conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) && 2057 !(bf_get(lpfc_fcf_record_mac_addr_prov, 2058 new_fcf_record) & LPFC_FCF_FPMA)) 2059 continue; 2060 } 2061 2062 /* 2063 * This fcf record matches filtering criteria. 2064 */ 2065 if (conn_entry->conn_rec.flags & FCFCNCT_BOOT) 2066 *boot_flag = 1; 2067 else 2068 *boot_flag = 0; 2069 2070 /* 2071 * If user did not specify any addressing mode, or if the 2072 * preferred addressing mode specified by user is not supported 2073 * by FCF, allow fabric to pick the addressing mode. 2074 */ 2075 *addr_mode = bf_get(lpfc_fcf_record_mac_addr_prov, 2076 new_fcf_record); 2077 /* 2078 * If the user specified a required address mode, assign that 2079 * address mode 2080 */ 2081 if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) && 2082 (!(conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED))) 2083 *addr_mode = (conn_entry->conn_rec.flags & 2084 FCFCNCT_AM_SPMA) ? 2085 LPFC_FCF_SPMA : LPFC_FCF_FPMA; 2086 /* 2087 * If the user specified a preferred address mode, use the 2088 * addr mode only if FCF support the addr_mode. 2089 */ 2090 else if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) && 2091 (conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED) && 2092 (conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) && 2093 (*addr_mode & LPFC_FCF_SPMA)) 2094 *addr_mode = LPFC_FCF_SPMA; 2095 else if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) && 2096 (conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED) && 2097 !(conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) && 2098 (*addr_mode & LPFC_FCF_FPMA)) 2099 *addr_mode = LPFC_FCF_FPMA; 2100 2101 /* If matching connect list has a vlan id, use it */ 2102 if (conn_entry->conn_rec.flags & FCFCNCT_VLAN_VALID) 2103 *vlan_id = conn_entry->conn_rec.vlan_tag; 2104 /* 2105 * If no vlan id is specified in connect list, use the vlan id 2106 * in the FCF record 2107 */ 2108 else if (fcf_vlan_id) 2109 *vlan_id = fcf_vlan_id; 2110 else 2111 *vlan_id = LPFC_FCOE_NULL_VID; 2112 2113 return 1; 2114 } 2115 2116 return 0; 2117 } 2118 2119 /** 2120 * lpfc_check_pending_fcoe_event - Check if there is pending fcoe event. 2121 * @phba: pointer to lpfc hba data structure. 2122 * @unreg_fcf: Unregister FCF if FCF table need to be re-scaned. 2123 * 2124 * This function check if there is any fcoe event pending while driver 2125 * scan FCF entries. If there is any pending event, it will restart the 2126 * FCF saning and return 1 else return 0. 2127 */ 2128 int 2129 lpfc_check_pending_fcoe_event(struct lpfc_hba *phba, uint8_t unreg_fcf) 2130 { 2131 /* 2132 * If the Link is up and no FCoE events while in the 2133 * FCF discovery, no need to restart FCF discovery. 2134 */ 2135 if ((phba->link_state >= LPFC_LINK_UP) && 2136 (phba->fcoe_eventtag == phba->fcoe_eventtag_at_fcf_scan)) 2137 return 0; 2138 2139 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2140 "2768 Pending link or FCF event during current " 2141 "handling of the previous event: link_state:x%x, " 2142 "evt_tag_at_scan:x%x, evt_tag_current:x%x\n", 2143 phba->link_state, phba->fcoe_eventtag_at_fcf_scan, 2144 phba->fcoe_eventtag); 2145 2146 spin_lock_irq(&phba->hbalock); 2147 phba->fcf.fcf_flag &= ~FCF_AVAILABLE; 2148 spin_unlock_irq(&phba->hbalock); 2149 2150 if (phba->link_state >= LPFC_LINK_UP) { 2151 lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY, 2152 "2780 Restart FCF table scan due to " 2153 "pending FCF event:evt_tag_at_scan:x%x, " 2154 "evt_tag_current:x%x\n", 2155 phba->fcoe_eventtag_at_fcf_scan, 2156 phba->fcoe_eventtag); 2157 lpfc_sli4_fcf_scan_read_fcf_rec(phba, LPFC_FCOE_FCF_GET_FIRST); 2158 } else { 2159 /* 2160 * Do not continue FCF discovery and clear FCF_TS_INPROG 2161 * flag 2162 */ 2163 lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY, 2164 "2833 Stop FCF discovery process due to link " 2165 "state change (x%x)\n", phba->link_state); 2166 clear_bit(FCF_TS_INPROG, &phba->hba_flag); 2167 clear_bit(FCF_RR_INPROG, &phba->hba_flag); 2168 spin_lock_irq(&phba->hbalock); 2169 phba->fcf.fcf_flag &= ~(FCF_REDISC_FOV | FCF_DISCOVERY); 2170 spin_unlock_irq(&phba->hbalock); 2171 } 2172 2173 /* Unregister the currently registered FCF if required */ 2174 if (unreg_fcf) { 2175 spin_lock_irq(&phba->hbalock); 2176 phba->fcf.fcf_flag &= ~FCF_REGISTERED; 2177 spin_unlock_irq(&phba->hbalock); 2178 lpfc_sli4_unregister_fcf(phba); 2179 } 2180 return 1; 2181 } 2182 2183 /** 2184 * lpfc_sli4_new_fcf_random_select - Randomly select an eligible new fcf record 2185 * @phba: pointer to lpfc hba data structure. 2186 * @fcf_cnt: number of eligible fcf record seen so far. 2187 * 2188 * This function makes an running random selection decision on FCF record to 2189 * use through a sequence of @fcf_cnt eligible FCF records with equal 2190 * probability. To perform integer manunipulation of random numbers with 2191 * size unit32_t, a 16-bit random number returned from get_random_u16() is 2192 * taken as the random random number generated. 2193 * 2194 * Returns true when outcome is for the newly read FCF record should be 2195 * chosen; otherwise, return false when outcome is for keeping the previously 2196 * chosen FCF record. 2197 **/ 2198 static bool 2199 lpfc_sli4_new_fcf_random_select(struct lpfc_hba *phba, uint32_t fcf_cnt) 2200 { 2201 uint32_t rand_num; 2202 2203 /* Get 16-bit uniform random number */ 2204 rand_num = get_random_u16(); 2205 2206 /* Decision with probability 1/fcf_cnt */ 2207 if ((fcf_cnt * rand_num) < 0xFFFF) 2208 return true; 2209 else 2210 return false; 2211 } 2212 2213 /** 2214 * lpfc_sli4_fcf_rec_mbox_parse - Parse read_fcf mbox command. 2215 * @phba: pointer to lpfc hba data structure. 2216 * @mboxq: pointer to mailbox object. 2217 * @next_fcf_index: pointer to holder of next fcf index. 2218 * 2219 * This routine parses the non-embedded fcf mailbox command by performing the 2220 * necessarily error checking, non-embedded read FCF record mailbox command 2221 * SGE parsing, and endianness swapping. 2222 * 2223 * Returns the pointer to the new FCF record in the non-embedded mailbox 2224 * command DMA memory if successfully, other NULL. 2225 */ 2226 static struct fcf_record * 2227 lpfc_sli4_fcf_rec_mbox_parse(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq, 2228 uint16_t *next_fcf_index) 2229 { 2230 void *virt_addr; 2231 struct lpfc_mbx_sge sge; 2232 struct lpfc_mbx_read_fcf_tbl *read_fcf; 2233 uint32_t shdr_status, shdr_add_status, if_type; 2234 union lpfc_sli4_cfg_shdr *shdr; 2235 struct fcf_record *new_fcf_record; 2236 2237 /* Get the first SGE entry from the non-embedded DMA memory. This 2238 * routine only uses a single SGE. 2239 */ 2240 lpfc_sli4_mbx_sge_get(mboxq, 0, &sge); 2241 if (unlikely(!mboxq->sge_array)) { 2242 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 2243 "2524 Failed to get the non-embedded SGE " 2244 "virtual address\n"); 2245 return NULL; 2246 } 2247 virt_addr = mboxq->sge_array->addr[0]; 2248 2249 shdr = (union lpfc_sli4_cfg_shdr *)virt_addr; 2250 lpfc_sli_pcimem_bcopy(shdr, shdr, 2251 sizeof(union lpfc_sli4_cfg_shdr)); 2252 shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response); 2253 if_type = bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf); 2254 shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response); 2255 if (shdr_status || shdr_add_status) { 2256 if (shdr_status == STATUS_FCF_TABLE_EMPTY || 2257 if_type == LPFC_SLI_INTF_IF_TYPE_2) 2258 lpfc_printf_log(phba, KERN_ERR, 2259 LOG_TRACE_EVENT, 2260 "2726 READ_FCF_RECORD Indicates empty " 2261 "FCF table.\n"); 2262 else 2263 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 2264 "2521 READ_FCF_RECORD mailbox failed " 2265 "with status x%x add_status x%x, " 2266 "mbx\n", shdr_status, shdr_add_status); 2267 return NULL; 2268 } 2269 2270 /* Interpreting the returned information of the FCF record */ 2271 read_fcf = (struct lpfc_mbx_read_fcf_tbl *)virt_addr; 2272 lpfc_sli_pcimem_bcopy(read_fcf, read_fcf, 2273 sizeof(struct lpfc_mbx_read_fcf_tbl)); 2274 *next_fcf_index = bf_get(lpfc_mbx_read_fcf_tbl_nxt_vindx, read_fcf); 2275 new_fcf_record = (struct fcf_record *)(virt_addr + 2276 sizeof(struct lpfc_mbx_read_fcf_tbl)); 2277 lpfc_sli_pcimem_bcopy(new_fcf_record, new_fcf_record, 2278 offsetof(struct fcf_record, vlan_bitmap)); 2279 new_fcf_record->word137 = le32_to_cpu(new_fcf_record->word137); 2280 new_fcf_record->word138 = le32_to_cpu(new_fcf_record->word138); 2281 2282 return new_fcf_record; 2283 } 2284 2285 /** 2286 * lpfc_sli4_log_fcf_record_info - Log the information of a fcf record 2287 * @phba: pointer to lpfc hba data structure. 2288 * @fcf_record: pointer to the fcf record. 2289 * @vlan_id: the lowest vlan identifier associated to this fcf record. 2290 * @next_fcf_index: the index to the next fcf record in hba's fcf table. 2291 * 2292 * This routine logs the detailed FCF record if the LOG_FIP loggin is 2293 * enabled. 2294 **/ 2295 static void 2296 lpfc_sli4_log_fcf_record_info(struct lpfc_hba *phba, 2297 struct fcf_record *fcf_record, 2298 uint16_t vlan_id, 2299 uint16_t next_fcf_index) 2300 { 2301 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2302 "2764 READ_FCF_RECORD:\n" 2303 "\tFCF_Index : x%x\n" 2304 "\tFCF_Avail : x%x\n" 2305 "\tFCF_Valid : x%x\n" 2306 "\tFCF_SOL : x%x\n" 2307 "\tFIP_Priority : x%x\n" 2308 "\tMAC_Provider : x%x\n" 2309 "\tLowest VLANID : x%x\n" 2310 "\tFCF_MAC Addr : x%x:%x:%x:%x:%x:%x\n" 2311 "\tFabric_Name : x%x:%x:%x:%x:%x:%x:%x:%x\n" 2312 "\tSwitch_Name : x%x:%x:%x:%x:%x:%x:%x:%x\n" 2313 "\tNext_FCF_Index: x%x\n", 2314 bf_get(lpfc_fcf_record_fcf_index, fcf_record), 2315 bf_get(lpfc_fcf_record_fcf_avail, fcf_record), 2316 bf_get(lpfc_fcf_record_fcf_valid, fcf_record), 2317 bf_get(lpfc_fcf_record_fcf_sol, fcf_record), 2318 fcf_record->fip_priority, 2319 bf_get(lpfc_fcf_record_mac_addr_prov, fcf_record), 2320 vlan_id, 2321 bf_get(lpfc_fcf_record_mac_0, fcf_record), 2322 bf_get(lpfc_fcf_record_mac_1, fcf_record), 2323 bf_get(lpfc_fcf_record_mac_2, fcf_record), 2324 bf_get(lpfc_fcf_record_mac_3, fcf_record), 2325 bf_get(lpfc_fcf_record_mac_4, fcf_record), 2326 bf_get(lpfc_fcf_record_mac_5, fcf_record), 2327 bf_get(lpfc_fcf_record_fab_name_0, fcf_record), 2328 bf_get(lpfc_fcf_record_fab_name_1, fcf_record), 2329 bf_get(lpfc_fcf_record_fab_name_2, fcf_record), 2330 bf_get(lpfc_fcf_record_fab_name_3, fcf_record), 2331 bf_get(lpfc_fcf_record_fab_name_4, fcf_record), 2332 bf_get(lpfc_fcf_record_fab_name_5, fcf_record), 2333 bf_get(lpfc_fcf_record_fab_name_6, fcf_record), 2334 bf_get(lpfc_fcf_record_fab_name_7, fcf_record), 2335 bf_get(lpfc_fcf_record_switch_name_0, fcf_record), 2336 bf_get(lpfc_fcf_record_switch_name_1, fcf_record), 2337 bf_get(lpfc_fcf_record_switch_name_2, fcf_record), 2338 bf_get(lpfc_fcf_record_switch_name_3, fcf_record), 2339 bf_get(lpfc_fcf_record_switch_name_4, fcf_record), 2340 bf_get(lpfc_fcf_record_switch_name_5, fcf_record), 2341 bf_get(lpfc_fcf_record_switch_name_6, fcf_record), 2342 bf_get(lpfc_fcf_record_switch_name_7, fcf_record), 2343 next_fcf_index); 2344 } 2345 2346 /** 2347 * lpfc_sli4_fcf_record_match - testing new FCF record for matching existing FCF 2348 * @phba: pointer to lpfc hba data structure. 2349 * @fcf_rec: pointer to an existing FCF record. 2350 * @new_fcf_record: pointer to a new FCF record. 2351 * @new_vlan_id: vlan id from the new FCF record. 2352 * 2353 * This function performs matching test of a new FCF record against an existing 2354 * FCF record. If the new_vlan_id passed in is LPFC_FCOE_IGNORE_VID, vlan id 2355 * will not be used as part of the FCF record matching criteria. 2356 * 2357 * Returns true if all the fields matching, otherwise returns false. 2358 */ 2359 static bool 2360 lpfc_sli4_fcf_record_match(struct lpfc_hba *phba, 2361 struct lpfc_fcf_rec *fcf_rec, 2362 struct fcf_record *new_fcf_record, 2363 uint16_t new_vlan_id) 2364 { 2365 if (new_vlan_id != LPFC_FCOE_IGNORE_VID) 2366 if (!lpfc_vlan_id_match(fcf_rec->vlan_id, new_vlan_id)) 2367 return false; 2368 if (!lpfc_mac_addr_match(fcf_rec->mac_addr, new_fcf_record)) 2369 return false; 2370 if (!lpfc_sw_name_match(fcf_rec->switch_name, new_fcf_record)) 2371 return false; 2372 if (!lpfc_fab_name_match(fcf_rec->fabric_name, new_fcf_record)) 2373 return false; 2374 if (fcf_rec->priority != new_fcf_record->fip_priority) 2375 return false; 2376 return true; 2377 } 2378 2379 /** 2380 * lpfc_sli4_fcf_rr_next_proc - processing next roundrobin fcf 2381 * @vport: Pointer to vport object. 2382 * @fcf_index: index to next fcf. 2383 * 2384 * This function processing the roundrobin fcf failover to next fcf index. 2385 * When this function is invoked, there will be a current fcf registered 2386 * for flogi. 2387 * Return: 0 for continue retrying flogi on currently registered fcf; 2388 * 1 for stop flogi on currently registered fcf; 2389 */ 2390 int lpfc_sli4_fcf_rr_next_proc(struct lpfc_vport *vport, uint16_t fcf_index) 2391 { 2392 struct lpfc_hba *phba = vport->phba; 2393 int rc; 2394 2395 if (fcf_index == LPFC_FCOE_FCF_NEXT_NONE) { 2396 if (test_bit(HBA_DEVLOSS_TMO, &phba->hba_flag)) { 2397 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2398 "2872 Devloss tmo with no eligible " 2399 "FCF, unregister in-use FCF (x%x) " 2400 "and rescan FCF table\n", 2401 phba->fcf.current_rec.fcf_indx); 2402 lpfc_unregister_fcf_rescan(phba); 2403 goto stop_flogi_current_fcf; 2404 } 2405 /* Mark the end to FLOGI roundrobin failover */ 2406 clear_bit(FCF_RR_INPROG, &phba->hba_flag); 2407 /* Allow action to new fcf asynchronous event */ 2408 spin_lock_irq(&phba->hbalock); 2409 phba->fcf.fcf_flag &= ~(FCF_AVAILABLE | FCF_SCAN_DONE); 2410 spin_unlock_irq(&phba->hbalock); 2411 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2412 "2865 No FCF available, stop roundrobin FCF " 2413 "failover and change port state:x%x/x%x\n", 2414 phba->pport->port_state, LPFC_VPORT_UNKNOWN); 2415 phba->pport->port_state = LPFC_VPORT_UNKNOWN; 2416 2417 if (!phba->fcf.fcf_redisc_attempted) { 2418 lpfc_unregister_fcf(phba); 2419 2420 rc = lpfc_sli4_redisc_fcf_table(phba); 2421 if (!rc) { 2422 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2423 "3195 Rediscover FCF table\n"); 2424 phba->fcf.fcf_redisc_attempted = 1; 2425 lpfc_sli4_clear_fcf_rr_bmask(phba); 2426 } else { 2427 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP, 2428 "3196 Rediscover FCF table " 2429 "failed. Status:x%x\n", rc); 2430 } 2431 } else { 2432 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP, 2433 "3197 Already rediscover FCF table " 2434 "attempted. No more retry\n"); 2435 } 2436 goto stop_flogi_current_fcf; 2437 } else { 2438 lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_ELS, 2439 "2794 Try FLOGI roundrobin FCF failover to " 2440 "(x%x)\n", fcf_index); 2441 rc = lpfc_sli4_fcf_rr_read_fcf_rec(phba, fcf_index); 2442 if (rc) 2443 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP | LOG_ELS, 2444 "2761 FLOGI roundrobin FCF failover " 2445 "failed (rc:x%x) to read FCF (x%x)\n", 2446 rc, phba->fcf.current_rec.fcf_indx); 2447 else 2448 goto stop_flogi_current_fcf; 2449 } 2450 return 0; 2451 2452 stop_flogi_current_fcf: 2453 lpfc_can_disctmo(vport); 2454 return 1; 2455 } 2456 2457 /** 2458 * lpfc_sli4_fcf_pri_list_del 2459 * @phba: pointer to lpfc hba data structure. 2460 * @fcf_index: the index of the fcf record to delete 2461 * This routine checks the on list flag of the fcf_index to be deleted. 2462 * If it is one the list then it is removed from the list, and the flag 2463 * is cleared. This routine grab the hbalock before removing the fcf 2464 * record from the list. 2465 **/ 2466 static void lpfc_sli4_fcf_pri_list_del(struct lpfc_hba *phba, 2467 uint16_t fcf_index) 2468 { 2469 struct lpfc_fcf_pri *new_fcf_pri; 2470 2471 new_fcf_pri = &phba->fcf.fcf_pri[fcf_index]; 2472 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2473 "3058 deleting idx x%x pri x%x flg x%x\n", 2474 fcf_index, new_fcf_pri->fcf_rec.priority, 2475 new_fcf_pri->fcf_rec.flag); 2476 spin_lock_irq(&phba->hbalock); 2477 if (new_fcf_pri->fcf_rec.flag & LPFC_FCF_ON_PRI_LIST) { 2478 if (phba->fcf.current_rec.priority == 2479 new_fcf_pri->fcf_rec.priority) 2480 phba->fcf.eligible_fcf_cnt--; 2481 list_del_init(&new_fcf_pri->list); 2482 new_fcf_pri->fcf_rec.flag &= ~LPFC_FCF_ON_PRI_LIST; 2483 } 2484 spin_unlock_irq(&phba->hbalock); 2485 } 2486 2487 /** 2488 * lpfc_sli4_set_fcf_flogi_fail 2489 * @phba: pointer to lpfc hba data structure. 2490 * @fcf_index: the index of the fcf record to update 2491 * This routine acquires the hbalock and then set the LPFC_FCF_FLOGI_FAILED 2492 * flag so the round robin selection for the particular priority level 2493 * will try a different fcf record that does not have this bit set. 2494 * If the fcf record is re-read for any reason this flag is cleared brfore 2495 * adding it to the priority list. 2496 **/ 2497 void 2498 lpfc_sli4_set_fcf_flogi_fail(struct lpfc_hba *phba, uint16_t fcf_index) 2499 { 2500 struct lpfc_fcf_pri *new_fcf_pri; 2501 new_fcf_pri = &phba->fcf.fcf_pri[fcf_index]; 2502 spin_lock_irq(&phba->hbalock); 2503 new_fcf_pri->fcf_rec.flag |= LPFC_FCF_FLOGI_FAILED; 2504 spin_unlock_irq(&phba->hbalock); 2505 } 2506 2507 /** 2508 * lpfc_sli4_fcf_pri_list_add 2509 * @phba: pointer to lpfc hba data structure. 2510 * @fcf_index: the index of the fcf record to add 2511 * @new_fcf_record: pointer to a new FCF record. 2512 * This routine checks the priority of the fcf_index to be added. 2513 * If it is a lower priority than the current head of the fcf_pri list 2514 * then it is added to the list in the right order. 2515 * If it is the same priority as the current head of the list then it 2516 * is added to the head of the list and its bit in the rr_bmask is set. 2517 * If the fcf_index to be added is of a higher priority than the current 2518 * head of the list then the rr_bmask is cleared, its bit is set in the 2519 * rr_bmask and it is added to the head of the list. 2520 * returns: 2521 * 0=success 1=failure 2522 **/ 2523 static int lpfc_sli4_fcf_pri_list_add(struct lpfc_hba *phba, 2524 uint16_t fcf_index, 2525 struct fcf_record *new_fcf_record) 2526 { 2527 uint16_t current_fcf_pri; 2528 uint16_t last_index; 2529 struct lpfc_fcf_pri *fcf_pri; 2530 struct lpfc_fcf_pri *next_fcf_pri; 2531 struct lpfc_fcf_pri *new_fcf_pri; 2532 int ret; 2533 2534 new_fcf_pri = &phba->fcf.fcf_pri[fcf_index]; 2535 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2536 "3059 adding idx x%x pri x%x flg x%x\n", 2537 fcf_index, new_fcf_record->fip_priority, 2538 new_fcf_pri->fcf_rec.flag); 2539 spin_lock_irq(&phba->hbalock); 2540 if (new_fcf_pri->fcf_rec.flag & LPFC_FCF_ON_PRI_LIST) 2541 list_del_init(&new_fcf_pri->list); 2542 new_fcf_pri->fcf_rec.fcf_index = fcf_index; 2543 new_fcf_pri->fcf_rec.priority = new_fcf_record->fip_priority; 2544 if (list_empty(&phba->fcf.fcf_pri_list)) { 2545 list_add(&new_fcf_pri->list, &phba->fcf.fcf_pri_list); 2546 ret = lpfc_sli4_fcf_rr_index_set(phba, 2547 new_fcf_pri->fcf_rec.fcf_index); 2548 goto out; 2549 } 2550 2551 last_index = find_first_bit(phba->fcf.fcf_rr_bmask, 2552 LPFC_SLI4_FCF_TBL_INDX_MAX); 2553 if (last_index >= LPFC_SLI4_FCF_TBL_INDX_MAX) { 2554 ret = 0; /* Empty rr list */ 2555 goto out; 2556 } 2557 current_fcf_pri = phba->fcf.fcf_pri[last_index].fcf_rec.priority; 2558 if (new_fcf_pri->fcf_rec.priority <= current_fcf_pri) { 2559 list_add(&new_fcf_pri->list, &phba->fcf.fcf_pri_list); 2560 if (new_fcf_pri->fcf_rec.priority < current_fcf_pri) { 2561 memset(phba->fcf.fcf_rr_bmask, 0, 2562 sizeof(*phba->fcf.fcf_rr_bmask)); 2563 /* fcfs_at_this_priority_level = 1; */ 2564 phba->fcf.eligible_fcf_cnt = 1; 2565 } else 2566 /* fcfs_at_this_priority_level++; */ 2567 phba->fcf.eligible_fcf_cnt++; 2568 ret = lpfc_sli4_fcf_rr_index_set(phba, 2569 new_fcf_pri->fcf_rec.fcf_index); 2570 goto out; 2571 } 2572 2573 list_for_each_entry_safe(fcf_pri, next_fcf_pri, 2574 &phba->fcf.fcf_pri_list, list) { 2575 if (new_fcf_pri->fcf_rec.priority <= 2576 fcf_pri->fcf_rec.priority) { 2577 if (fcf_pri->list.prev == &phba->fcf.fcf_pri_list) 2578 list_add(&new_fcf_pri->list, 2579 &phba->fcf.fcf_pri_list); 2580 else 2581 list_add(&new_fcf_pri->list, 2582 &((struct lpfc_fcf_pri *) 2583 fcf_pri->list.prev)->list); 2584 ret = 0; 2585 goto out; 2586 } else if (fcf_pri->list.next == &phba->fcf.fcf_pri_list 2587 || new_fcf_pri->fcf_rec.priority < 2588 next_fcf_pri->fcf_rec.priority) { 2589 list_add(&new_fcf_pri->list, &fcf_pri->list); 2590 ret = 0; 2591 goto out; 2592 } 2593 if (new_fcf_pri->fcf_rec.priority > fcf_pri->fcf_rec.priority) 2594 continue; 2595 2596 } 2597 ret = 1; 2598 out: 2599 /* we use = instead of |= to clear the FLOGI_FAILED flag. */ 2600 new_fcf_pri->fcf_rec.flag = LPFC_FCF_ON_PRI_LIST; 2601 spin_unlock_irq(&phba->hbalock); 2602 return ret; 2603 } 2604 2605 /** 2606 * lpfc_mbx_cmpl_fcf_scan_read_fcf_rec - fcf scan read_fcf mbox cmpl handler. 2607 * @phba: pointer to lpfc hba data structure. 2608 * @mboxq: pointer to mailbox object. 2609 * 2610 * This function iterates through all the fcf records available in 2611 * HBA and chooses the optimal FCF record for discovery. After finding 2612 * the FCF for discovery it registers the FCF record and kicks start 2613 * discovery. 2614 * If FCF_IN_USE flag is set in currently used FCF, the routine tries to 2615 * use an FCF record which matches fabric name and mac address of the 2616 * currently used FCF record. 2617 * If the driver supports only one FCF, it will try to use the FCF record 2618 * used by BOOT_BIOS. 2619 */ 2620 void 2621 lpfc_mbx_cmpl_fcf_scan_read_fcf_rec(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq) 2622 { 2623 struct fcf_record *new_fcf_record; 2624 uint32_t boot_flag, addr_mode; 2625 uint16_t fcf_index, next_fcf_index; 2626 struct lpfc_fcf_rec *fcf_rec = NULL; 2627 uint16_t vlan_id = LPFC_FCOE_NULL_VID; 2628 bool select_new_fcf; 2629 int rc; 2630 2631 /* If there is pending FCoE event restart FCF table scan */ 2632 if (lpfc_check_pending_fcoe_event(phba, LPFC_SKIP_UNREG_FCF)) { 2633 lpfc_sli4_mbox_cmd_free(phba, mboxq); 2634 return; 2635 } 2636 2637 /* Parse the FCF record from the non-embedded mailbox command */ 2638 new_fcf_record = lpfc_sli4_fcf_rec_mbox_parse(phba, mboxq, 2639 &next_fcf_index); 2640 if (!new_fcf_record) { 2641 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 2642 "2765 Mailbox command READ_FCF_RECORD " 2643 "failed to retrieve a FCF record.\n"); 2644 /* Let next new FCF event trigger fast failover */ 2645 clear_bit(FCF_TS_INPROG, &phba->hba_flag); 2646 lpfc_sli4_mbox_cmd_free(phba, mboxq); 2647 return; 2648 } 2649 2650 /* Check the FCF record against the connection list */ 2651 rc = lpfc_match_fcf_conn_list(phba, new_fcf_record, &boot_flag, 2652 &addr_mode, &vlan_id); 2653 2654 /* Log the FCF record information if turned on */ 2655 lpfc_sli4_log_fcf_record_info(phba, new_fcf_record, vlan_id, 2656 next_fcf_index); 2657 2658 /* 2659 * If the fcf record does not match with connect list entries 2660 * read the next entry; otherwise, this is an eligible FCF 2661 * record for roundrobin FCF failover. 2662 */ 2663 if (!rc) { 2664 lpfc_sli4_fcf_pri_list_del(phba, 2665 bf_get(lpfc_fcf_record_fcf_index, 2666 new_fcf_record)); 2667 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP, 2668 "2781 FCF (x%x) failed connection " 2669 "list check: (x%x/x%x/%x)\n", 2670 bf_get(lpfc_fcf_record_fcf_index, 2671 new_fcf_record), 2672 bf_get(lpfc_fcf_record_fcf_avail, 2673 new_fcf_record), 2674 bf_get(lpfc_fcf_record_fcf_valid, 2675 new_fcf_record), 2676 bf_get(lpfc_fcf_record_fcf_sol, 2677 new_fcf_record)); 2678 if ((phba->fcf.fcf_flag & FCF_IN_USE) && 2679 lpfc_sli4_fcf_record_match(phba, &phba->fcf.current_rec, 2680 new_fcf_record, LPFC_FCOE_IGNORE_VID)) { 2681 if (bf_get(lpfc_fcf_record_fcf_index, new_fcf_record) != 2682 phba->fcf.current_rec.fcf_indx) { 2683 lpfc_printf_log(phba, KERN_ERR, 2684 LOG_TRACE_EVENT, 2685 "2862 FCF (x%x) matches property " 2686 "of in-use FCF (x%x)\n", 2687 bf_get(lpfc_fcf_record_fcf_index, 2688 new_fcf_record), 2689 phba->fcf.current_rec.fcf_indx); 2690 goto read_next_fcf; 2691 } 2692 /* 2693 * In case the current in-use FCF record becomes 2694 * invalid/unavailable during FCF discovery that 2695 * was not triggered by fast FCF failover process, 2696 * treat it as fast FCF failover. 2697 */ 2698 if (!(phba->fcf.fcf_flag & FCF_REDISC_PEND) && 2699 !(phba->fcf.fcf_flag & FCF_REDISC_FOV)) { 2700 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP, 2701 "2835 Invalid in-use FCF " 2702 "(x%x), enter FCF failover " 2703 "table scan.\n", 2704 phba->fcf.current_rec.fcf_indx); 2705 spin_lock_irq(&phba->hbalock); 2706 phba->fcf.fcf_flag |= FCF_REDISC_FOV; 2707 spin_unlock_irq(&phba->hbalock); 2708 lpfc_sli4_mbox_cmd_free(phba, mboxq); 2709 lpfc_sli4_fcf_scan_read_fcf_rec(phba, 2710 LPFC_FCOE_FCF_GET_FIRST); 2711 return; 2712 } 2713 } 2714 goto read_next_fcf; 2715 } else { 2716 fcf_index = bf_get(lpfc_fcf_record_fcf_index, new_fcf_record); 2717 rc = lpfc_sli4_fcf_pri_list_add(phba, fcf_index, 2718 new_fcf_record); 2719 if (rc) 2720 goto read_next_fcf; 2721 } 2722 2723 /* 2724 * If this is not the first FCF discovery of the HBA, use last 2725 * FCF record for the discovery. The condition that a rescan 2726 * matches the in-use FCF record: fabric name, switch name, mac 2727 * address, and vlan_id. 2728 */ 2729 spin_lock_irq(&phba->hbalock); 2730 if (phba->fcf.fcf_flag & FCF_IN_USE) { 2731 if (phba->cfg_fcf_failover_policy == LPFC_FCF_FOV && 2732 lpfc_sli4_fcf_record_match(phba, &phba->fcf.current_rec, 2733 new_fcf_record, vlan_id)) { 2734 if (bf_get(lpfc_fcf_record_fcf_index, new_fcf_record) == 2735 phba->fcf.current_rec.fcf_indx) { 2736 phba->fcf.fcf_flag |= FCF_AVAILABLE; 2737 if (phba->fcf.fcf_flag & FCF_REDISC_PEND) 2738 /* Stop FCF redisc wait timer */ 2739 __lpfc_sli4_stop_fcf_redisc_wait_timer( 2740 phba); 2741 else if (phba->fcf.fcf_flag & FCF_REDISC_FOV) 2742 /* Fast failover, mark completed */ 2743 phba->fcf.fcf_flag &= ~FCF_REDISC_FOV; 2744 spin_unlock_irq(&phba->hbalock); 2745 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2746 "2836 New FCF matches in-use " 2747 "FCF (x%x), port_state:x%x, " 2748 "fc_flag:x%lx\n", 2749 phba->fcf.current_rec.fcf_indx, 2750 phba->pport->port_state, 2751 phba->pport->fc_flag); 2752 goto out; 2753 } else 2754 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 2755 "2863 New FCF (x%x) matches " 2756 "property of in-use FCF (x%x)\n", 2757 bf_get(lpfc_fcf_record_fcf_index, 2758 new_fcf_record), 2759 phba->fcf.current_rec.fcf_indx); 2760 } 2761 /* 2762 * Read next FCF record from HBA searching for the matching 2763 * with in-use record only if not during the fast failover 2764 * period. In case of fast failover period, it shall try to 2765 * determine whether the FCF record just read should be the 2766 * next candidate. 2767 */ 2768 if (!(phba->fcf.fcf_flag & FCF_REDISC_FOV)) { 2769 spin_unlock_irq(&phba->hbalock); 2770 goto read_next_fcf; 2771 } 2772 } 2773 /* 2774 * Update on failover FCF record only if it's in FCF fast-failover 2775 * period; otherwise, update on current FCF record. 2776 */ 2777 if (phba->fcf.fcf_flag & FCF_REDISC_FOV) 2778 fcf_rec = &phba->fcf.failover_rec; 2779 else 2780 fcf_rec = &phba->fcf.current_rec; 2781 2782 if (phba->fcf.fcf_flag & FCF_AVAILABLE) { 2783 /* 2784 * If the driver FCF record does not have boot flag 2785 * set and new hba fcf record has boot flag set, use 2786 * the new hba fcf record. 2787 */ 2788 if (boot_flag && !(fcf_rec->flag & BOOT_ENABLE)) { 2789 /* Choose this FCF record */ 2790 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2791 "2837 Update current FCF record " 2792 "(x%x) with new FCF record (x%x)\n", 2793 fcf_rec->fcf_indx, 2794 bf_get(lpfc_fcf_record_fcf_index, 2795 new_fcf_record)); 2796 __lpfc_update_fcf_record(phba, fcf_rec, new_fcf_record, 2797 addr_mode, vlan_id, BOOT_ENABLE); 2798 spin_unlock_irq(&phba->hbalock); 2799 goto read_next_fcf; 2800 } 2801 /* 2802 * If the driver FCF record has boot flag set and the 2803 * new hba FCF record does not have boot flag, read 2804 * the next FCF record. 2805 */ 2806 if (!boot_flag && (fcf_rec->flag & BOOT_ENABLE)) { 2807 spin_unlock_irq(&phba->hbalock); 2808 goto read_next_fcf; 2809 } 2810 /* 2811 * If the new hba FCF record has lower priority value 2812 * than the driver FCF record, use the new record. 2813 */ 2814 if (new_fcf_record->fip_priority < fcf_rec->priority) { 2815 /* Choose the new FCF record with lower priority */ 2816 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2817 "2838 Update current FCF record " 2818 "(x%x) with new FCF record (x%x)\n", 2819 fcf_rec->fcf_indx, 2820 bf_get(lpfc_fcf_record_fcf_index, 2821 new_fcf_record)); 2822 __lpfc_update_fcf_record(phba, fcf_rec, new_fcf_record, 2823 addr_mode, vlan_id, 0); 2824 /* Reset running random FCF selection count */ 2825 phba->fcf.eligible_fcf_cnt = 1; 2826 } else if (new_fcf_record->fip_priority == fcf_rec->priority) { 2827 /* Update running random FCF selection count */ 2828 phba->fcf.eligible_fcf_cnt++; 2829 select_new_fcf = lpfc_sli4_new_fcf_random_select(phba, 2830 phba->fcf.eligible_fcf_cnt); 2831 if (select_new_fcf) { 2832 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2833 "2839 Update current FCF record " 2834 "(x%x) with new FCF record (x%x)\n", 2835 fcf_rec->fcf_indx, 2836 bf_get(lpfc_fcf_record_fcf_index, 2837 new_fcf_record)); 2838 /* Choose the new FCF by random selection */ 2839 __lpfc_update_fcf_record(phba, fcf_rec, 2840 new_fcf_record, 2841 addr_mode, vlan_id, 0); 2842 } 2843 } 2844 spin_unlock_irq(&phba->hbalock); 2845 goto read_next_fcf; 2846 } 2847 /* 2848 * This is the first suitable FCF record, choose this record for 2849 * initial best-fit FCF. 2850 */ 2851 if (fcf_rec) { 2852 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2853 "2840 Update initial FCF candidate " 2854 "with FCF (x%x)\n", 2855 bf_get(lpfc_fcf_record_fcf_index, 2856 new_fcf_record)); 2857 __lpfc_update_fcf_record(phba, fcf_rec, new_fcf_record, 2858 addr_mode, vlan_id, (boot_flag ? 2859 BOOT_ENABLE : 0)); 2860 phba->fcf.fcf_flag |= FCF_AVAILABLE; 2861 /* Setup initial running random FCF selection count */ 2862 phba->fcf.eligible_fcf_cnt = 1; 2863 } 2864 spin_unlock_irq(&phba->hbalock); 2865 goto read_next_fcf; 2866 2867 read_next_fcf: 2868 lpfc_sli4_mbox_cmd_free(phba, mboxq); 2869 if (next_fcf_index == LPFC_FCOE_FCF_NEXT_NONE || next_fcf_index == 0) { 2870 if (phba->fcf.fcf_flag & FCF_REDISC_FOV) { 2871 /* 2872 * Case of FCF fast failover scan 2873 */ 2874 2875 /* 2876 * It has not found any suitable FCF record, cancel 2877 * FCF scan inprogress, and do nothing 2878 */ 2879 if (!(phba->fcf.failover_rec.flag & RECORD_VALID)) { 2880 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP, 2881 "2782 No suitable FCF found: " 2882 "(x%x/x%x)\n", 2883 phba->fcoe_eventtag_at_fcf_scan, 2884 bf_get(lpfc_fcf_record_fcf_index, 2885 new_fcf_record)); 2886 if (test_bit(HBA_DEVLOSS_TMO, 2887 &phba->hba_flag)) { 2888 clear_bit(FCF_TS_INPROG, 2889 &phba->hba_flag); 2890 /* Unregister in-use FCF and rescan */ 2891 lpfc_printf_log(phba, KERN_INFO, 2892 LOG_FIP, 2893 "2864 On devloss tmo " 2894 "unreg in-use FCF and " 2895 "rescan FCF table\n"); 2896 lpfc_unregister_fcf_rescan(phba); 2897 return; 2898 } 2899 /* 2900 * Let next new FCF event trigger fast failover 2901 */ 2902 clear_bit(FCF_TS_INPROG, &phba->hba_flag); 2903 return; 2904 } 2905 /* 2906 * It has found a suitable FCF record that is not 2907 * the same as in-use FCF record, unregister the 2908 * in-use FCF record, replace the in-use FCF record 2909 * with the new FCF record, mark FCF fast failover 2910 * completed, and then start register the new FCF 2911 * record. 2912 */ 2913 2914 /* Unregister the current in-use FCF record */ 2915 lpfc_unregister_fcf(phba); 2916 2917 /* Replace in-use record with the new record */ 2918 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2919 "2842 Replace in-use FCF (x%x) " 2920 "with failover FCF (x%x)\n", 2921 phba->fcf.current_rec.fcf_indx, 2922 phba->fcf.failover_rec.fcf_indx); 2923 memcpy(&phba->fcf.current_rec, 2924 &phba->fcf.failover_rec, 2925 sizeof(struct lpfc_fcf_rec)); 2926 /* 2927 * Mark the fast FCF failover rediscovery completed 2928 * and the start of the first round of the roundrobin 2929 * FCF failover. 2930 */ 2931 spin_lock_irq(&phba->hbalock); 2932 phba->fcf.fcf_flag &= ~FCF_REDISC_FOV; 2933 spin_unlock_irq(&phba->hbalock); 2934 /* Register to the new FCF record */ 2935 lpfc_register_fcf(phba); 2936 } else { 2937 /* 2938 * In case of transaction period to fast FCF failover, 2939 * do nothing when search to the end of the FCF table. 2940 */ 2941 if ((phba->fcf.fcf_flag & FCF_REDISC_EVT) || 2942 (phba->fcf.fcf_flag & FCF_REDISC_PEND)) 2943 return; 2944 2945 if (phba->cfg_fcf_failover_policy == LPFC_FCF_FOV && 2946 phba->fcf.fcf_flag & FCF_IN_USE) { 2947 /* 2948 * In case the current in-use FCF record no 2949 * longer existed during FCF discovery that 2950 * was not triggered by fast FCF failover 2951 * process, treat it as fast FCF failover. 2952 */ 2953 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2954 "2841 In-use FCF record (x%x) " 2955 "not reported, entering fast " 2956 "FCF failover mode scanning.\n", 2957 phba->fcf.current_rec.fcf_indx); 2958 spin_lock_irq(&phba->hbalock); 2959 phba->fcf.fcf_flag |= FCF_REDISC_FOV; 2960 spin_unlock_irq(&phba->hbalock); 2961 lpfc_sli4_fcf_scan_read_fcf_rec(phba, 2962 LPFC_FCOE_FCF_GET_FIRST); 2963 return; 2964 } 2965 /* Register to the new FCF record */ 2966 lpfc_register_fcf(phba); 2967 } 2968 } else 2969 lpfc_sli4_fcf_scan_read_fcf_rec(phba, next_fcf_index); 2970 return; 2971 2972 out: 2973 lpfc_sli4_mbox_cmd_free(phba, mboxq); 2974 lpfc_register_fcf(phba); 2975 2976 return; 2977 } 2978 2979 /** 2980 * lpfc_mbx_cmpl_fcf_rr_read_fcf_rec - fcf roundrobin read_fcf mbox cmpl hdler 2981 * @phba: pointer to lpfc hba data structure. 2982 * @mboxq: pointer to mailbox object. 2983 * 2984 * This is the callback function for FLOGI failure roundrobin FCF failover 2985 * read FCF record mailbox command from the eligible FCF record bmask for 2986 * performing the failover. If the FCF read back is not valid/available, it 2987 * fails through to retrying FLOGI to the currently registered FCF again. 2988 * Otherwise, if the FCF read back is valid and available, it will set the 2989 * newly read FCF record to the failover FCF record, unregister currently 2990 * registered FCF record, copy the failover FCF record to the current 2991 * FCF record, and then register the current FCF record before proceeding 2992 * to trying FLOGI on the new failover FCF. 2993 */ 2994 void 2995 lpfc_mbx_cmpl_fcf_rr_read_fcf_rec(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq) 2996 { 2997 struct fcf_record *new_fcf_record; 2998 uint32_t boot_flag, addr_mode; 2999 uint16_t next_fcf_index, fcf_index; 3000 uint16_t current_fcf_index; 3001 uint16_t vlan_id = LPFC_FCOE_NULL_VID; 3002 int rc; 3003 3004 /* If link state is not up, stop the roundrobin failover process */ 3005 if (phba->link_state < LPFC_LINK_UP) { 3006 spin_lock_irq(&phba->hbalock); 3007 phba->fcf.fcf_flag &= ~FCF_DISCOVERY; 3008 spin_unlock_irq(&phba->hbalock); 3009 clear_bit(FCF_RR_INPROG, &phba->hba_flag); 3010 goto out; 3011 } 3012 3013 /* Parse the FCF record from the non-embedded mailbox command */ 3014 new_fcf_record = lpfc_sli4_fcf_rec_mbox_parse(phba, mboxq, 3015 &next_fcf_index); 3016 if (!new_fcf_record) { 3017 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP, 3018 "2766 Mailbox command READ_FCF_RECORD " 3019 "failed to retrieve a FCF record. " 3020 "hba_flg x%lx fcf_flg x%x\n", phba->hba_flag, 3021 phba->fcf.fcf_flag); 3022 lpfc_unregister_fcf_rescan(phba); 3023 goto out; 3024 } 3025 3026 /* Get the needed parameters from FCF record */ 3027 rc = lpfc_match_fcf_conn_list(phba, new_fcf_record, &boot_flag, 3028 &addr_mode, &vlan_id); 3029 3030 /* Log the FCF record information if turned on */ 3031 lpfc_sli4_log_fcf_record_info(phba, new_fcf_record, vlan_id, 3032 next_fcf_index); 3033 3034 fcf_index = bf_get(lpfc_fcf_record_fcf_index, new_fcf_record); 3035 if (!rc) { 3036 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 3037 "2848 Remove ineligible FCF (x%x) from " 3038 "from roundrobin bmask\n", fcf_index); 3039 /* Clear roundrobin bmask bit for ineligible FCF */ 3040 lpfc_sli4_fcf_rr_index_clear(phba, fcf_index); 3041 /* Perform next round of roundrobin FCF failover */ 3042 fcf_index = lpfc_sli4_fcf_rr_next_index_get(phba); 3043 rc = lpfc_sli4_fcf_rr_next_proc(phba->pport, fcf_index); 3044 if (rc) 3045 goto out; 3046 goto error_out; 3047 } 3048 3049 if (fcf_index == phba->fcf.current_rec.fcf_indx) { 3050 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 3051 "2760 Perform FLOGI roundrobin FCF failover: " 3052 "FCF (x%x) back to FCF (x%x)\n", 3053 phba->fcf.current_rec.fcf_indx, fcf_index); 3054 /* Wait 500 ms before retrying FLOGI to current FCF */ 3055 msleep(500); 3056 lpfc_issue_init_vfi(phba->pport); 3057 goto out; 3058 } 3059 3060 /* Upload new FCF record to the failover FCF record */ 3061 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 3062 "2834 Update current FCF (x%x) with new FCF (x%x)\n", 3063 phba->fcf.failover_rec.fcf_indx, fcf_index); 3064 spin_lock_irq(&phba->hbalock); 3065 __lpfc_update_fcf_record(phba, &phba->fcf.failover_rec, 3066 new_fcf_record, addr_mode, vlan_id, 3067 (boot_flag ? BOOT_ENABLE : 0)); 3068 spin_unlock_irq(&phba->hbalock); 3069 3070 current_fcf_index = phba->fcf.current_rec.fcf_indx; 3071 3072 /* Unregister the current in-use FCF record */ 3073 lpfc_unregister_fcf(phba); 3074 3075 /* Replace in-use record with the new record */ 3076 memcpy(&phba->fcf.current_rec, &phba->fcf.failover_rec, 3077 sizeof(struct lpfc_fcf_rec)); 3078 3079 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 3080 "2783 Perform FLOGI roundrobin FCF failover: FCF " 3081 "(x%x) to FCF (x%x)\n", current_fcf_index, fcf_index); 3082 3083 error_out: 3084 lpfc_register_fcf(phba); 3085 out: 3086 lpfc_sli4_mbox_cmd_free(phba, mboxq); 3087 } 3088 3089 /** 3090 * lpfc_mbx_cmpl_read_fcf_rec - read fcf completion handler. 3091 * @phba: pointer to lpfc hba data structure. 3092 * @mboxq: pointer to mailbox object. 3093 * 3094 * This is the callback function of read FCF record mailbox command for 3095 * updating the eligible FCF bmask for FLOGI failure roundrobin FCF 3096 * failover when a new FCF event happened. If the FCF read back is 3097 * valid/available and it passes the connection list check, it updates 3098 * the bmask for the eligible FCF record for roundrobin failover. 3099 */ 3100 void 3101 lpfc_mbx_cmpl_read_fcf_rec(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq) 3102 { 3103 struct fcf_record *new_fcf_record; 3104 uint32_t boot_flag, addr_mode; 3105 uint16_t fcf_index, next_fcf_index; 3106 uint16_t vlan_id = LPFC_FCOE_NULL_VID; 3107 int rc; 3108 3109 /* If link state is not up, no need to proceed */ 3110 if (phba->link_state < LPFC_LINK_UP) 3111 goto out; 3112 3113 /* If FCF discovery period is over, no need to proceed */ 3114 if (!(phba->fcf.fcf_flag & FCF_DISCOVERY)) 3115 goto out; 3116 3117 /* Parse the FCF record from the non-embedded mailbox command */ 3118 new_fcf_record = lpfc_sli4_fcf_rec_mbox_parse(phba, mboxq, 3119 &next_fcf_index); 3120 if (!new_fcf_record) { 3121 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 3122 "2767 Mailbox command READ_FCF_RECORD " 3123 "failed to retrieve a FCF record.\n"); 3124 goto out; 3125 } 3126 3127 /* Check the connection list for eligibility */ 3128 rc = lpfc_match_fcf_conn_list(phba, new_fcf_record, &boot_flag, 3129 &addr_mode, &vlan_id); 3130 3131 /* Log the FCF record information if turned on */ 3132 lpfc_sli4_log_fcf_record_info(phba, new_fcf_record, vlan_id, 3133 next_fcf_index); 3134 3135 if (!rc) 3136 goto out; 3137 3138 /* Update the eligible FCF record index bmask */ 3139 fcf_index = bf_get(lpfc_fcf_record_fcf_index, new_fcf_record); 3140 3141 rc = lpfc_sli4_fcf_pri_list_add(phba, fcf_index, new_fcf_record); 3142 3143 out: 3144 lpfc_sli4_mbox_cmd_free(phba, mboxq); 3145 } 3146 3147 /** 3148 * lpfc_init_vfi_cmpl - Completion handler for init_vfi mbox command. 3149 * @phba: pointer to lpfc hba data structure. 3150 * @mboxq: pointer to mailbox data structure. 3151 * 3152 * This function handles completion of init vfi mailbox command. 3153 */ 3154 static void 3155 lpfc_init_vfi_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq) 3156 { 3157 struct lpfc_vport *vport = mboxq->vport; 3158 3159 /* 3160 * VFI not supported on interface type 0, just do the flogi 3161 * Also continue if the VFI is in use - just use the same one. 3162 */ 3163 if (mboxq->u.mb.mbxStatus && 3164 (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) != 3165 LPFC_SLI_INTF_IF_TYPE_0) && 3166 mboxq->u.mb.mbxStatus != MBX_VFI_IN_USE) { 3167 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 3168 "2891 Init VFI mailbox failed 0x%x\n", 3169 mboxq->u.mb.mbxStatus); 3170 mempool_free(mboxq, phba->mbox_mem_pool); 3171 lpfc_vport_set_state(vport, FC_VPORT_FAILED); 3172 return; 3173 } 3174 3175 lpfc_initial_flogi(vport); 3176 mempool_free(mboxq, phba->mbox_mem_pool); 3177 return; 3178 } 3179 3180 /** 3181 * lpfc_issue_init_vfi - Issue init_vfi mailbox command. 3182 * @vport: pointer to lpfc_vport data structure. 3183 * 3184 * This function issue a init_vfi mailbox command to initialize the VFI and 3185 * VPI for the physical port. 3186 */ 3187 void 3188 lpfc_issue_init_vfi(struct lpfc_vport *vport) 3189 { 3190 LPFC_MBOXQ_t *mboxq; 3191 int rc; 3192 struct lpfc_hba *phba = vport->phba; 3193 3194 mboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 3195 if (!mboxq) { 3196 lpfc_printf_vlog(vport, KERN_ERR, 3197 LOG_TRACE_EVENT, "2892 Failed to allocate " 3198 "init_vfi mailbox\n"); 3199 return; 3200 } 3201 lpfc_init_vfi(mboxq, vport); 3202 mboxq->mbox_cmpl = lpfc_init_vfi_cmpl; 3203 rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_NOWAIT); 3204 if (rc == MBX_NOT_FINISHED) { 3205 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 3206 "2893 Failed to issue init_vfi mailbox\n"); 3207 mempool_free(mboxq, vport->phba->mbox_mem_pool); 3208 } 3209 } 3210 3211 /** 3212 * lpfc_init_vpi_cmpl - Completion handler for init_vpi mbox command. 3213 * @phba: pointer to lpfc hba data structure. 3214 * @mboxq: pointer to mailbox data structure. 3215 * 3216 * This function handles completion of init vpi mailbox command. 3217 */ 3218 void 3219 lpfc_init_vpi_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq) 3220 { 3221 struct lpfc_vport *vport = mboxq->vport; 3222 struct lpfc_nodelist *ndlp; 3223 3224 if (mboxq->u.mb.mbxStatus) { 3225 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 3226 "2609 Init VPI mailbox failed 0x%x\n", 3227 mboxq->u.mb.mbxStatus); 3228 mempool_free(mboxq, phba->mbox_mem_pool); 3229 lpfc_vport_set_state(vport, FC_VPORT_FAILED); 3230 return; 3231 } 3232 clear_bit(FC_VPORT_NEEDS_INIT_VPI, &vport->fc_flag); 3233 3234 /* If this port is physical port or FDISC is done, do reg_vpi */ 3235 if ((phba->pport == vport) || (vport->port_state == LPFC_FDISC)) { 3236 ndlp = lpfc_findnode_did(vport, Fabric_DID); 3237 if (!ndlp) 3238 lpfc_printf_vlog(vport, KERN_ERR, 3239 LOG_TRACE_EVENT, 3240 "2731 Cannot find fabric " 3241 "controller node\n"); 3242 else 3243 lpfc_register_new_vport(phba, vport, ndlp); 3244 mempool_free(mboxq, phba->mbox_mem_pool); 3245 return; 3246 } 3247 3248 if (phba->link_flag & LS_NPIV_FAB_SUPPORTED) 3249 lpfc_initial_fdisc(vport); 3250 else { 3251 lpfc_vport_set_state(vport, FC_VPORT_NO_FABRIC_SUPP); 3252 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 3253 "2606 No NPIV Fabric support\n"); 3254 } 3255 mempool_free(mboxq, phba->mbox_mem_pool); 3256 return; 3257 } 3258 3259 /** 3260 * lpfc_issue_init_vpi - Issue init_vpi mailbox command. 3261 * @vport: pointer to lpfc_vport data structure. 3262 * 3263 * This function issue a init_vpi mailbox command to initialize 3264 * VPI for the vport. 3265 */ 3266 void 3267 lpfc_issue_init_vpi(struct lpfc_vport *vport) 3268 { 3269 LPFC_MBOXQ_t *mboxq; 3270 int rc, vpi; 3271 3272 if ((vport->port_type != LPFC_PHYSICAL_PORT) && (!vport->vpi)) { 3273 vpi = lpfc_alloc_vpi(vport->phba); 3274 if (!vpi) { 3275 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 3276 "3303 Failed to obtain vport vpi\n"); 3277 lpfc_vport_set_state(vport, FC_VPORT_FAILED); 3278 return; 3279 } 3280 vport->vpi = vpi; 3281 } 3282 3283 mboxq = mempool_alloc(vport->phba->mbox_mem_pool, GFP_KERNEL); 3284 if (!mboxq) { 3285 lpfc_printf_vlog(vport, KERN_ERR, 3286 LOG_TRACE_EVENT, "2607 Failed to allocate " 3287 "init_vpi mailbox\n"); 3288 return; 3289 } 3290 lpfc_init_vpi(vport->phba, mboxq, vport->vpi); 3291 mboxq->vport = vport; 3292 mboxq->mbox_cmpl = lpfc_init_vpi_cmpl; 3293 rc = lpfc_sli_issue_mbox(vport->phba, mboxq, MBX_NOWAIT); 3294 if (rc == MBX_NOT_FINISHED) { 3295 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 3296 "2608 Failed to issue init_vpi mailbox\n"); 3297 mempool_free(mboxq, vport->phba->mbox_mem_pool); 3298 } 3299 } 3300 3301 /** 3302 * lpfc_start_fdiscs - send fdiscs for each vports on this port. 3303 * @phba: pointer to lpfc hba data structure. 3304 * 3305 * This function loops through the list of vports on the @phba and issues an 3306 * FDISC if possible. 3307 */ 3308 void 3309 lpfc_start_fdiscs(struct lpfc_hba *phba) 3310 { 3311 struct lpfc_vport **vports; 3312 int i; 3313 3314 vports = lpfc_create_vport_work_array(phba); 3315 if (vports != NULL) { 3316 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) { 3317 if (vports[i]->port_type == LPFC_PHYSICAL_PORT) 3318 continue; 3319 /* There are no vpi for this vport */ 3320 if (vports[i]->vpi > phba->max_vpi) { 3321 lpfc_vport_set_state(vports[i], 3322 FC_VPORT_FAILED); 3323 continue; 3324 } 3325 if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) { 3326 lpfc_vport_set_state(vports[i], 3327 FC_VPORT_LINKDOWN); 3328 continue; 3329 } 3330 if (test_bit(FC_VPORT_NEEDS_INIT_VPI, 3331 &vports[i]->fc_flag)) { 3332 lpfc_issue_init_vpi(vports[i]); 3333 continue; 3334 } 3335 if (phba->link_flag & LS_NPIV_FAB_SUPPORTED) 3336 lpfc_initial_fdisc(vports[i]); 3337 else { 3338 lpfc_vport_set_state(vports[i], 3339 FC_VPORT_NO_FABRIC_SUPP); 3340 lpfc_printf_vlog(vports[i], KERN_ERR, 3341 LOG_TRACE_EVENT, 3342 "0259 No NPIV " 3343 "Fabric support\n"); 3344 } 3345 } 3346 } 3347 lpfc_destroy_vport_work_array(phba, vports); 3348 } 3349 3350 void 3351 lpfc_mbx_cmpl_reg_vfi(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq) 3352 { 3353 struct lpfc_vport *vport = mboxq->vport; 3354 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 3355 3356 /* 3357 * VFI not supported for interface type 0, so ignore any mailbox 3358 * error (except VFI in use) and continue with the discovery. 3359 */ 3360 if (mboxq->u.mb.mbxStatus && 3361 (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) != 3362 LPFC_SLI_INTF_IF_TYPE_0) && 3363 mboxq->u.mb.mbxStatus != MBX_VFI_IN_USE) { 3364 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 3365 "2018 REG_VFI mbxStatus error x%x " 3366 "HBA state x%x\n", 3367 mboxq->u.mb.mbxStatus, vport->port_state); 3368 if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) { 3369 /* FLOGI failed, use loop map to make discovery list */ 3370 lpfc_disc_list_loopmap(vport); 3371 /* Start discovery */ 3372 lpfc_disc_start(vport); 3373 goto out_free_mem; 3374 } 3375 lpfc_vport_set_state(vport, FC_VPORT_FAILED); 3376 goto out_free_mem; 3377 } 3378 3379 /* If the VFI is already registered, there is nothing else to do 3380 * Unless this was a VFI update and we are in PT2PT mode, then 3381 * we should drop through to set the port state to ready. 3382 */ 3383 if (test_bit(FC_VFI_REGISTERED, &vport->fc_flag)) 3384 if (!(phba->sli_rev == LPFC_SLI_REV4 && 3385 test_bit(FC_PT2PT, &vport->fc_flag))) 3386 goto out_free_mem; 3387 3388 /* The VPI is implicitly registered when the VFI is registered */ 3389 set_bit(FC_VFI_REGISTERED, &vport->fc_flag); 3390 clear_bit(FC_VPORT_NEEDS_REG_VPI, &vport->fc_flag); 3391 clear_bit(FC_VPORT_NEEDS_INIT_VPI, &vport->fc_flag); 3392 spin_lock_irq(shost->host_lock); 3393 vport->vpi_state |= LPFC_VPI_REGISTERED; 3394 spin_unlock_irq(shost->host_lock); 3395 3396 /* In case SLI4 FC loopback test, we are ready */ 3397 if ((phba->sli_rev == LPFC_SLI_REV4) && 3398 (phba->link_flag & LS_LOOPBACK_MODE)) { 3399 phba->link_state = LPFC_HBA_READY; 3400 goto out_free_mem; 3401 } 3402 3403 lpfc_printf_vlog(vport, KERN_INFO, LOG_SLI, 3404 "3313 cmpl reg vfi port_state:%x fc_flag:%lx " 3405 "myDid:%x alpacnt:%d LinkState:%x topology:%x\n", 3406 vport->port_state, vport->fc_flag, vport->fc_myDID, 3407 vport->phba->alpa_map[0], 3408 phba->link_state, phba->fc_topology); 3409 3410 if (vport->port_state == LPFC_FABRIC_CFG_LINK) { 3411 /* 3412 * For private loop or for NPort pt2pt, 3413 * just start discovery and we are done. 3414 */ 3415 if (test_bit(FC_PT2PT, &vport->fc_flag) || 3416 (phba->fc_topology == LPFC_TOPOLOGY_LOOP && 3417 !test_bit(FC_PUBLIC_LOOP, &vport->fc_flag))) { 3418 3419 /* Use loop map to make discovery list */ 3420 lpfc_disc_list_loopmap(vport); 3421 /* Start discovery */ 3422 if (test_bit(FC_PT2PT, &vport->fc_flag)) 3423 vport->port_state = LPFC_VPORT_READY; 3424 else 3425 lpfc_disc_start(vport); 3426 } else { 3427 lpfc_start_fdiscs(phba); 3428 lpfc_do_scr_ns_plogi(phba, vport); 3429 } 3430 } 3431 3432 out_free_mem: 3433 lpfc_mbox_rsrc_cleanup(phba, mboxq, MBOX_THD_UNLOCKED); 3434 } 3435 3436 static void 3437 lpfc_mbx_cmpl_read_sparam(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 3438 { 3439 MAILBOX_t *mb = &pmb->u.mb; 3440 struct lpfc_dmabuf *mp = pmb->ctx_buf; 3441 struct lpfc_vport *vport = pmb->vport; 3442 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 3443 struct serv_parm *sp = &vport->fc_sparam; 3444 uint32_t ed_tov; 3445 3446 /* Check for error */ 3447 if (mb->mbxStatus) { 3448 /* READ_SPARAM mbox error <mbxStatus> state <hba_state> */ 3449 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 3450 "0319 READ_SPARAM mbxStatus error x%x " 3451 "hba state x%x>\n", 3452 mb->mbxStatus, vport->port_state); 3453 lpfc_linkdown(phba); 3454 goto out; 3455 } 3456 3457 memcpy((uint8_t *) &vport->fc_sparam, (uint8_t *) mp->virt, 3458 sizeof (struct serv_parm)); 3459 3460 ed_tov = be32_to_cpu(sp->cmn.e_d_tov); 3461 if (sp->cmn.edtovResolution) /* E_D_TOV ticks are in nanoseconds */ 3462 ed_tov = (ed_tov + 999999) / 1000000; 3463 3464 phba->fc_edtov = ed_tov; 3465 phba->fc_ratov = (2 * ed_tov) / 1000; 3466 if (phba->fc_ratov < FF_DEF_RATOV) { 3467 /* RA_TOV should be atleast 10sec for initial flogi */ 3468 phba->fc_ratov = FF_DEF_RATOV; 3469 } 3470 3471 lpfc_update_vport_wwn(vport); 3472 fc_host_port_name(shost) = wwn_to_u64(vport->fc_portname.u.wwn); 3473 if (vport->port_type == LPFC_PHYSICAL_PORT) { 3474 memcpy(&phba->wwnn, &vport->fc_nodename, sizeof(phba->wwnn)); 3475 memcpy(&phba->wwpn, &vport->fc_portname, sizeof(phba->wwnn)); 3476 } 3477 3478 lpfc_mbox_rsrc_cleanup(phba, pmb, MBOX_THD_UNLOCKED); 3479 3480 /* Check if sending the FLOGI is being deferred to after we get 3481 * up to date CSPs from MBX_READ_SPARAM. 3482 */ 3483 if (test_bit(HBA_DEFER_FLOGI, &phba->hba_flag)) { 3484 lpfc_initial_flogi(vport); 3485 clear_bit(HBA_DEFER_FLOGI, &phba->hba_flag); 3486 } 3487 return; 3488 3489 out: 3490 lpfc_mbox_rsrc_cleanup(phba, pmb, MBOX_THD_UNLOCKED); 3491 lpfc_issue_clear_la(phba, vport); 3492 } 3493 3494 static void 3495 lpfc_mbx_process_link_up(struct lpfc_hba *phba, struct lpfc_mbx_read_top *la) 3496 { 3497 struct lpfc_vport *vport = phba->pport; 3498 LPFC_MBOXQ_t *sparam_mbox, *cfglink_mbox = NULL; 3499 int i; 3500 int rc; 3501 struct fcf_record *fcf_record; 3502 unsigned long iflags; 3503 3504 spin_lock_irqsave(&phba->hbalock, iflags); 3505 phba->fc_linkspeed = bf_get(lpfc_mbx_read_top_link_spd, la); 3506 3507 if (!test_bit(HBA_FCOE_MODE, &phba->hba_flag)) { 3508 switch (bf_get(lpfc_mbx_read_top_link_spd, la)) { 3509 case LPFC_LINK_SPEED_1GHZ: 3510 case LPFC_LINK_SPEED_2GHZ: 3511 case LPFC_LINK_SPEED_4GHZ: 3512 case LPFC_LINK_SPEED_8GHZ: 3513 case LPFC_LINK_SPEED_10GHZ: 3514 case LPFC_LINK_SPEED_16GHZ: 3515 case LPFC_LINK_SPEED_32GHZ: 3516 case LPFC_LINK_SPEED_64GHZ: 3517 case LPFC_LINK_SPEED_128GHZ: 3518 case LPFC_LINK_SPEED_256GHZ: 3519 break; 3520 default: 3521 phba->fc_linkspeed = LPFC_LINK_SPEED_UNKNOWN; 3522 break; 3523 } 3524 } 3525 3526 if (phba->fc_topology && 3527 phba->fc_topology != bf_get(lpfc_mbx_read_top_topology, la)) { 3528 lpfc_printf_log(phba, KERN_WARNING, LOG_SLI, 3529 "3314 Topology changed was 0x%x is 0x%x\n", 3530 phba->fc_topology, 3531 bf_get(lpfc_mbx_read_top_topology, la)); 3532 phba->fc_topology_changed = 1; 3533 } 3534 3535 phba->fc_topology = bf_get(lpfc_mbx_read_top_topology, la); 3536 phba->link_flag &= ~(LS_NPIV_FAB_SUPPORTED | LS_CT_VEN_RPA); 3537 3538 if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) { 3539 phba->sli3_options &= ~LPFC_SLI3_NPIV_ENABLED; 3540 3541 /* if npiv is enabled and this adapter supports npiv log 3542 * a message that npiv is not supported in this topology 3543 */ 3544 if (phba->cfg_enable_npiv && phba->max_vpi) 3545 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT, 3546 "1309 Link Up Event npiv not supported in loop " 3547 "topology\n"); 3548 /* Get Loop Map information */ 3549 if (bf_get(lpfc_mbx_read_top_il, la)) 3550 set_bit(FC_LBIT, &vport->fc_flag); 3551 3552 vport->fc_myDID = bf_get(lpfc_mbx_read_top_alpa_granted, la); 3553 i = la->lilpBde64.tus.f.bdeSize; 3554 3555 if (i == 0) { 3556 phba->alpa_map[0] = 0; 3557 } else { 3558 if (vport->cfg_log_verbose & LOG_LINK_EVENT) { 3559 int numalpa, j, k; 3560 union { 3561 uint8_t pamap[16]; 3562 struct { 3563 uint32_t wd1; 3564 uint32_t wd2; 3565 uint32_t wd3; 3566 uint32_t wd4; 3567 } pa; 3568 } un; 3569 numalpa = phba->alpa_map[0]; 3570 j = 0; 3571 while (j < numalpa) { 3572 memset(un.pamap, 0, 16); 3573 for (k = 1; j < numalpa; k++) { 3574 un.pamap[k - 1] = 3575 phba->alpa_map[j + 1]; 3576 j++; 3577 if (k == 16) 3578 break; 3579 } 3580 /* Link Up Event ALPA map */ 3581 lpfc_printf_log(phba, 3582 KERN_WARNING, 3583 LOG_LINK_EVENT, 3584 "1304 Link Up Event " 3585 "ALPA map Data: x%x " 3586 "x%x x%x x%x\n", 3587 un.pa.wd1, un.pa.wd2, 3588 un.pa.wd3, un.pa.wd4); 3589 } 3590 } 3591 } 3592 } else { 3593 if (!(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)) { 3594 if (phba->max_vpi && phba->cfg_enable_npiv && 3595 (phba->sli_rev >= LPFC_SLI_REV3)) 3596 phba->sli3_options |= LPFC_SLI3_NPIV_ENABLED; 3597 } 3598 vport->fc_myDID = phba->fc_pref_DID; 3599 set_bit(FC_LBIT, &vport->fc_flag); 3600 } 3601 spin_unlock_irqrestore(&phba->hbalock, iflags); 3602 3603 lpfc_linkup(phba); 3604 sparam_mbox = NULL; 3605 3606 sparam_mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 3607 if (!sparam_mbox) 3608 goto out; 3609 3610 rc = lpfc_read_sparam(phba, sparam_mbox, 0); 3611 if (rc) { 3612 mempool_free(sparam_mbox, phba->mbox_mem_pool); 3613 goto out; 3614 } 3615 sparam_mbox->vport = vport; 3616 sparam_mbox->mbox_cmpl = lpfc_mbx_cmpl_read_sparam; 3617 rc = lpfc_sli_issue_mbox(phba, sparam_mbox, MBX_NOWAIT); 3618 if (rc == MBX_NOT_FINISHED) { 3619 lpfc_mbox_rsrc_cleanup(phba, sparam_mbox, MBOX_THD_UNLOCKED); 3620 goto out; 3621 } 3622 3623 if (!test_bit(HBA_FCOE_MODE, &phba->hba_flag)) { 3624 cfglink_mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 3625 if (!cfglink_mbox) 3626 goto out; 3627 vport->port_state = LPFC_LOCAL_CFG_LINK; 3628 lpfc_config_link(phba, cfglink_mbox); 3629 cfglink_mbox->vport = vport; 3630 cfglink_mbox->mbox_cmpl = lpfc_mbx_cmpl_local_config_link; 3631 rc = lpfc_sli_issue_mbox(phba, cfglink_mbox, MBX_NOWAIT); 3632 if (rc == MBX_NOT_FINISHED) { 3633 mempool_free(cfglink_mbox, phba->mbox_mem_pool); 3634 goto out; 3635 } 3636 } else { 3637 vport->port_state = LPFC_VPORT_UNKNOWN; 3638 /* 3639 * Add the driver's default FCF record at FCF index 0 now. This 3640 * is phase 1 implementation that support FCF index 0 and driver 3641 * defaults. 3642 */ 3643 if (!test_bit(HBA_FIP_SUPPORT, &phba->hba_flag)) { 3644 fcf_record = kzalloc(sizeof(struct fcf_record), 3645 GFP_KERNEL); 3646 if (unlikely(!fcf_record)) { 3647 lpfc_printf_log(phba, KERN_ERR, 3648 LOG_TRACE_EVENT, 3649 "2554 Could not allocate memory for " 3650 "fcf record\n"); 3651 rc = -ENODEV; 3652 goto out; 3653 } 3654 3655 lpfc_sli4_build_dflt_fcf_record(phba, fcf_record, 3656 LPFC_FCOE_FCF_DEF_INDEX); 3657 rc = lpfc_sli4_add_fcf_record(phba, fcf_record); 3658 if (unlikely(rc)) { 3659 lpfc_printf_log(phba, KERN_ERR, 3660 LOG_TRACE_EVENT, 3661 "2013 Could not manually add FCF " 3662 "record 0, status %d\n", rc); 3663 rc = -ENODEV; 3664 kfree(fcf_record); 3665 goto out; 3666 } 3667 kfree(fcf_record); 3668 } 3669 /* 3670 * The driver is expected to do FIP/FCF. Call the port 3671 * and get the FCF Table. 3672 */ 3673 if (test_bit(FCF_TS_INPROG, &phba->hba_flag)) 3674 return; 3675 /* This is the initial FCF discovery scan */ 3676 spin_lock_irqsave(&phba->hbalock, iflags); 3677 phba->fcf.fcf_flag |= FCF_INIT_DISC; 3678 spin_unlock_irqrestore(&phba->hbalock, iflags); 3679 lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY, 3680 "2778 Start FCF table scan at linkup\n"); 3681 rc = lpfc_sli4_fcf_scan_read_fcf_rec(phba, 3682 LPFC_FCOE_FCF_GET_FIRST); 3683 if (rc) { 3684 spin_lock_irqsave(&phba->hbalock, iflags); 3685 phba->fcf.fcf_flag &= ~FCF_INIT_DISC; 3686 spin_unlock_irqrestore(&phba->hbalock, iflags); 3687 goto out; 3688 } 3689 /* Reset FCF roundrobin bmask for new discovery */ 3690 lpfc_sli4_clear_fcf_rr_bmask(phba); 3691 } 3692 3693 /* Prepare for LINK up registrations */ 3694 memset(phba->os_host_name, 0, sizeof(phba->os_host_name)); 3695 scnprintf(phba->os_host_name, sizeof(phba->os_host_name), "%s", 3696 init_utsname()->nodename); 3697 return; 3698 out: 3699 lpfc_vport_set_state(vport, FC_VPORT_FAILED); 3700 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 3701 "0263 Discovery Mailbox error: state: 0x%x : x%px x%px\n", 3702 vport->port_state, sparam_mbox, cfglink_mbox); 3703 lpfc_issue_clear_la(phba, vport); 3704 return; 3705 } 3706 3707 static void 3708 lpfc_enable_la(struct lpfc_hba *phba) 3709 { 3710 uint32_t control; 3711 struct lpfc_sli *psli = &phba->sli; 3712 spin_lock_irq(&phba->hbalock); 3713 psli->sli_flag |= LPFC_PROCESS_LA; 3714 if (phba->sli_rev <= LPFC_SLI_REV3) { 3715 control = readl(phba->HCregaddr); 3716 control |= HC_LAINT_ENA; 3717 writel(control, phba->HCregaddr); 3718 readl(phba->HCregaddr); /* flush */ 3719 } 3720 spin_unlock_irq(&phba->hbalock); 3721 } 3722 3723 static void 3724 lpfc_mbx_issue_link_down(struct lpfc_hba *phba) 3725 { 3726 lpfc_linkdown(phba); 3727 lpfc_enable_la(phba); 3728 lpfc_unregister_unused_fcf(phba); 3729 /* turn on Link Attention interrupts - no CLEAR_LA needed */ 3730 } 3731 3732 3733 /* 3734 * This routine handles processing a READ_TOPOLOGY mailbox 3735 * command upon completion. It is setup in the LPFC_MBOXQ 3736 * as the completion routine when the command is 3737 * handed off to the SLI layer. SLI4 only. 3738 */ 3739 void 3740 lpfc_mbx_cmpl_read_topology(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 3741 { 3742 struct lpfc_vport *vport = pmb->vport; 3743 struct lpfc_mbx_read_top *la; 3744 struct lpfc_sli_ring *pring; 3745 MAILBOX_t *mb = &pmb->u.mb; 3746 struct lpfc_dmabuf *mp = pmb->ctx_buf; 3747 uint8_t attn_type; 3748 3749 /* Unblock ELS traffic */ 3750 pring = lpfc_phba_elsring(phba); 3751 if (pring) 3752 pring->flag &= ~LPFC_STOP_IOCB_EVENT; 3753 3754 /* Check for error */ 3755 if (mb->mbxStatus) { 3756 lpfc_printf_log(phba, KERN_INFO, LOG_LINK_EVENT, 3757 "1307 READ_LA mbox error x%x state x%x\n", 3758 mb->mbxStatus, vport->port_state); 3759 lpfc_mbx_issue_link_down(phba); 3760 phba->link_state = LPFC_HBA_ERROR; 3761 goto lpfc_mbx_cmpl_read_topology_free_mbuf; 3762 } 3763 3764 la = (struct lpfc_mbx_read_top *) &pmb->u.mb.un.varReadTop; 3765 attn_type = bf_get(lpfc_mbx_read_top_att_type, la); 3766 3767 memcpy(&phba->alpa_map[0], mp->virt, 128); 3768 3769 if (bf_get(lpfc_mbx_read_top_pb, la)) 3770 set_bit(FC_BYPASSED_MODE, &vport->fc_flag); 3771 else 3772 clear_bit(FC_BYPASSED_MODE, &vport->fc_flag); 3773 3774 if (phba->fc_eventTag <= la->eventTag) { 3775 phba->fc_stat.LinkMultiEvent++; 3776 if (attn_type == LPFC_ATT_LINK_UP) 3777 if (phba->fc_eventTag != 0) 3778 lpfc_linkdown(phba); 3779 } 3780 3781 phba->fc_eventTag = la->eventTag; 3782 phba->link_events++; 3783 if (attn_type == LPFC_ATT_LINK_UP) { 3784 phba->fc_stat.LinkUp++; 3785 if (phba->link_flag & LS_LOOPBACK_MODE) { 3786 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT, 3787 "1306 Link Up Event in loop back mode " 3788 "x%x received Data: x%x x%x x%x x%x\n", 3789 la->eventTag, phba->fc_eventTag, 3790 bf_get(lpfc_mbx_read_top_alpa_granted, 3791 la), 3792 bf_get(lpfc_mbx_read_top_link_spd, la), 3793 phba->alpa_map[0]); 3794 } else { 3795 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT, 3796 "1303 Link Up Event x%x received " 3797 "Data: x%x x%x x%x x%x x%x\n", 3798 la->eventTag, phba->fc_eventTag, 3799 bf_get(lpfc_mbx_read_top_alpa_granted, 3800 la), 3801 bf_get(lpfc_mbx_read_top_link_spd, la), 3802 phba->alpa_map[0], 3803 bf_get(lpfc_mbx_read_top_fa, la)); 3804 } 3805 lpfc_mbx_process_link_up(phba, la); 3806 3807 if (phba->cmf_active_mode != LPFC_CFG_OFF) 3808 lpfc_cmf_signal_init(phba); 3809 3810 if (phba->lmt & LMT_64Gb) 3811 lpfc_read_lds_params(phba); 3812 3813 } else if (attn_type == LPFC_ATT_LINK_DOWN || 3814 attn_type == LPFC_ATT_UNEXP_WWPN) { 3815 phba->fc_stat.LinkDown++; 3816 if (phba->link_flag & LS_LOOPBACK_MODE) 3817 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT, 3818 "1308 Link Down Event in loop back mode " 3819 "x%x received " 3820 "Data: x%x x%x x%lx\n", 3821 la->eventTag, phba->fc_eventTag, 3822 phba->pport->port_state, vport->fc_flag); 3823 else if (attn_type == LPFC_ATT_UNEXP_WWPN) 3824 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT, 3825 "1313 Link Down Unexpected FA WWPN Event x%x " 3826 "received Data: x%x x%x x%lx x%x\n", 3827 la->eventTag, phba->fc_eventTag, 3828 phba->pport->port_state, vport->fc_flag, 3829 bf_get(lpfc_mbx_read_top_fa, la)); 3830 else 3831 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT, 3832 "1305 Link Down Event x%x received " 3833 "Data: x%x x%x x%lx x%x\n", 3834 la->eventTag, phba->fc_eventTag, 3835 phba->pport->port_state, vport->fc_flag, 3836 bf_get(lpfc_mbx_read_top_fa, la)); 3837 lpfc_mbx_issue_link_down(phba); 3838 } 3839 3840 if ((phba->sli_rev < LPFC_SLI_REV4) && 3841 bf_get(lpfc_mbx_read_top_fa, la)) 3842 lpfc_printf_log(phba, KERN_INFO, LOG_LINK_EVENT, 3843 "1311 fa %d\n", 3844 bf_get(lpfc_mbx_read_top_fa, la)); 3845 3846 lpfc_mbx_cmpl_read_topology_free_mbuf: 3847 lpfc_mbox_rsrc_cleanup(phba, pmb, MBOX_THD_UNLOCKED); 3848 } 3849 3850 /* 3851 * This routine handles processing a REG_LOGIN mailbox 3852 * command upon completion. It is setup in the LPFC_MBOXQ 3853 * as the completion routine when the command is 3854 * handed off to the SLI layer. 3855 */ 3856 void 3857 lpfc_mbx_cmpl_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 3858 { 3859 struct lpfc_vport *vport = pmb->vport; 3860 struct lpfc_dmabuf *mp = pmb->ctx_buf; 3861 struct lpfc_nodelist *ndlp = pmb->ctx_ndlp; 3862 3863 /* The driver calls the state machine with the pmb pointer 3864 * but wants to make sure a stale ctx_buf isn't acted on. 3865 * The ctx_buf is restored later and cleaned up. 3866 */ 3867 pmb->ctx_buf = NULL; 3868 pmb->ctx_ndlp = NULL; 3869 3870 lpfc_printf_vlog(vport, KERN_INFO, LOG_SLI | LOG_NODE | LOG_DISCOVERY, 3871 "0002 rpi:%x DID:%x flg:%lx %d x%px\n", 3872 ndlp->nlp_rpi, ndlp->nlp_DID, ndlp->nlp_flag, 3873 kref_read(&ndlp->kref), 3874 ndlp); 3875 clear_bit(NLP_REG_LOGIN_SEND, &ndlp->nlp_flag); 3876 3877 if (test_bit(NLP_IGNR_REG_CMPL, &ndlp->nlp_flag) || 3878 ndlp->nlp_state != NLP_STE_REG_LOGIN_ISSUE) { 3879 /* We rcvd a rscn after issuing this 3880 * mbox reg login, we may have cycled 3881 * back through the state and be 3882 * back at reg login state so this 3883 * mbox needs to be ignored becase 3884 * there is another reg login in 3885 * process. 3886 */ 3887 clear_bit(NLP_IGNR_REG_CMPL, &ndlp->nlp_flag); 3888 3889 /* 3890 * We cannot leave the RPI registered because 3891 * if we go thru discovery again for this ndlp 3892 * a subsequent REG_RPI will fail. 3893 */ 3894 set_bit(NLP_RPI_REGISTERED, &ndlp->nlp_flag); 3895 lpfc_unreg_rpi(vport, ndlp); 3896 } 3897 3898 /* Call state machine */ 3899 lpfc_disc_state_machine(vport, ndlp, pmb, NLP_EVT_CMPL_REG_LOGIN); 3900 pmb->ctx_buf = mp; 3901 lpfc_mbox_rsrc_cleanup(phba, pmb, MBOX_THD_UNLOCKED); 3902 3903 /* decrement the node reference count held for this callback 3904 * function. 3905 */ 3906 lpfc_nlp_put(ndlp); 3907 3908 return; 3909 } 3910 3911 static void 3912 lpfc_mbx_cmpl_unreg_vpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 3913 { 3914 MAILBOX_t *mb = &pmb->u.mb; 3915 struct lpfc_vport *vport = pmb->vport; 3916 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 3917 3918 switch (mb->mbxStatus) { 3919 case 0x0011: 3920 case 0x0020: 3921 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE, 3922 "0911 cmpl_unreg_vpi, mb status = 0x%x\n", 3923 mb->mbxStatus); 3924 break; 3925 /* If VPI is busy, reset the HBA */ 3926 case 0x9700: 3927 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 3928 "2798 Unreg_vpi failed vpi 0x%x, mb status = 0x%x\n", 3929 vport->vpi, mb->mbxStatus); 3930 if (!test_bit(FC_UNLOADING, &phba->pport->load_flag)) 3931 lpfc_workq_post_event(phba, NULL, NULL, 3932 LPFC_EVT_RESET_HBA); 3933 } 3934 3935 set_bit(FC_VPORT_NEEDS_REG_VPI, &vport->fc_flag); 3936 spin_lock_irq(shost->host_lock); 3937 vport->vpi_state &= ~LPFC_VPI_REGISTERED; 3938 spin_unlock_irq(shost->host_lock); 3939 mempool_free(pmb, phba->mbox_mem_pool); 3940 lpfc_cleanup_vports_rrqs(vport, NULL); 3941 /* 3942 * This shost reference might have been taken at the beginning of 3943 * lpfc_vport_delete() 3944 */ 3945 if (test_bit(FC_UNLOADING, &vport->load_flag) && vport != phba->pport) 3946 scsi_host_put(shost); 3947 } 3948 3949 int 3950 lpfc_mbx_unreg_vpi(struct lpfc_vport *vport) 3951 { 3952 struct lpfc_hba *phba = vport->phba; 3953 LPFC_MBOXQ_t *mbox; 3954 int rc; 3955 3956 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 3957 if (!mbox) 3958 return 1; 3959 3960 lpfc_unreg_vpi(phba, vport->vpi, mbox); 3961 mbox->vport = vport; 3962 mbox->mbox_cmpl = lpfc_mbx_cmpl_unreg_vpi; 3963 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT); 3964 if (rc == MBX_NOT_FINISHED) { 3965 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 3966 "1800 Could not issue unreg_vpi\n"); 3967 mempool_free(mbox, phba->mbox_mem_pool); 3968 return rc; 3969 } 3970 return 0; 3971 } 3972 3973 static void 3974 lpfc_mbx_cmpl_reg_vpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 3975 { 3976 struct lpfc_vport *vport = pmb->vport; 3977 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 3978 MAILBOX_t *mb = &pmb->u.mb; 3979 3980 switch (mb->mbxStatus) { 3981 case 0x0011: 3982 case 0x9601: 3983 case 0x9602: 3984 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE, 3985 "0912 cmpl_reg_vpi, mb status = 0x%x\n", 3986 mb->mbxStatus); 3987 lpfc_vport_set_state(vport, FC_VPORT_FAILED); 3988 clear_bit(FC_FABRIC, &vport->fc_flag); 3989 clear_bit(FC_PUBLIC_LOOP, &vport->fc_flag); 3990 vport->fc_myDID = 0; 3991 3992 if ((vport->cfg_enable_fc4_type == LPFC_ENABLE_BOTH) || 3993 (vport->cfg_enable_fc4_type == LPFC_ENABLE_NVME)) { 3994 if (phba->nvmet_support) 3995 lpfc_nvmet_update_targetport(phba); 3996 else 3997 lpfc_nvme_update_localport(vport); 3998 } 3999 goto out; 4000 } 4001 4002 clear_bit(FC_VPORT_NEEDS_REG_VPI, &vport->fc_flag); 4003 spin_lock_irq(shost->host_lock); 4004 vport->vpi_state |= LPFC_VPI_REGISTERED; 4005 spin_unlock_irq(shost->host_lock); 4006 vport->num_disc_nodes = 0; 4007 /* go thru NPR list and issue ELS PLOGIs */ 4008 if (atomic_read(&vport->fc_npr_cnt)) 4009 lpfc_els_disc_plogi(vport); 4010 4011 if (!vport->num_disc_nodes) { 4012 clear_bit(FC_NDISC_ACTIVE, &vport->fc_flag); 4013 lpfc_can_disctmo(vport); 4014 } 4015 vport->port_state = LPFC_VPORT_READY; 4016 4017 out: 4018 mempool_free(pmb, phba->mbox_mem_pool); 4019 return; 4020 } 4021 4022 /** 4023 * lpfc_create_static_vport - Read HBA config region to create static vports. 4024 * @phba: pointer to lpfc hba data structure. 4025 * 4026 * This routine issue a DUMP mailbox command for config region 22 to get 4027 * the list of static vports to be created. The function create vports 4028 * based on the information returned from the HBA. 4029 **/ 4030 void 4031 lpfc_create_static_vport(struct lpfc_hba *phba) 4032 { 4033 LPFC_MBOXQ_t *pmb = NULL; 4034 MAILBOX_t *mb; 4035 struct static_vport_info *vport_info; 4036 int mbx_wait_rc = 0, i; 4037 struct fc_vport_identifiers vport_id; 4038 struct fc_vport *new_fc_vport; 4039 struct Scsi_Host *shost; 4040 struct lpfc_vport *vport; 4041 uint16_t offset = 0; 4042 uint8_t *vport_buff; 4043 struct lpfc_dmabuf *mp; 4044 uint32_t byte_count = 0; 4045 4046 pmb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 4047 if (!pmb) { 4048 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 4049 "0542 lpfc_create_static_vport failed to" 4050 " allocate mailbox memory\n"); 4051 return; 4052 } 4053 memset(pmb, 0, sizeof(LPFC_MBOXQ_t)); 4054 mb = &pmb->u.mb; 4055 4056 vport_info = kzalloc(sizeof(struct static_vport_info), GFP_KERNEL); 4057 if (!vport_info) { 4058 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 4059 "0543 lpfc_create_static_vport failed to" 4060 " allocate vport_info\n"); 4061 mempool_free(pmb, phba->mbox_mem_pool); 4062 return; 4063 } 4064 4065 vport_buff = (uint8_t *) vport_info; 4066 do { 4067 /* While loop iteration forces a free dma buffer from 4068 * the previous loop because the mbox is reused and 4069 * the dump routine is a single-use construct. 4070 */ 4071 if (pmb->ctx_buf) { 4072 mp = pmb->ctx_buf; 4073 lpfc_mbuf_free(phba, mp->virt, mp->phys); 4074 kfree(mp); 4075 pmb->ctx_buf = NULL; 4076 } 4077 if (lpfc_dump_static_vport(phba, pmb, offset)) 4078 goto out; 4079 4080 pmb->vport = phba->pport; 4081 mbx_wait_rc = lpfc_sli_issue_mbox_wait(phba, pmb, 4082 LPFC_MBOX_TMO); 4083 4084 if ((mbx_wait_rc != MBX_SUCCESS) || mb->mbxStatus) { 4085 lpfc_printf_log(phba, KERN_WARNING, LOG_INIT, 4086 "0544 lpfc_create_static_vport failed to" 4087 " issue dump mailbox command ret 0x%x " 4088 "status 0x%x\n", 4089 mbx_wait_rc, mb->mbxStatus); 4090 goto out; 4091 } 4092 4093 if (phba->sli_rev == LPFC_SLI_REV4) { 4094 byte_count = pmb->u.mqe.un.mb_words[5]; 4095 mp = pmb->ctx_buf; 4096 if (byte_count > sizeof(struct static_vport_info) - 4097 offset) 4098 byte_count = sizeof(struct static_vport_info) 4099 - offset; 4100 memcpy(vport_buff + offset, mp->virt, byte_count); 4101 offset += byte_count; 4102 } else { 4103 if (mb->un.varDmp.word_cnt > 4104 sizeof(struct static_vport_info) - offset) 4105 mb->un.varDmp.word_cnt = 4106 sizeof(struct static_vport_info) 4107 - offset; 4108 byte_count = mb->un.varDmp.word_cnt; 4109 lpfc_sli_pcimem_bcopy(((uint8_t *)mb) + DMP_RSP_OFFSET, 4110 vport_buff + offset, 4111 byte_count); 4112 4113 offset += byte_count; 4114 } 4115 4116 } while (byte_count && 4117 offset < sizeof(struct static_vport_info)); 4118 4119 4120 if ((le32_to_cpu(vport_info->signature) != VPORT_INFO_SIG) || 4121 ((le32_to_cpu(vport_info->rev) & VPORT_INFO_REV_MASK) 4122 != VPORT_INFO_REV)) { 4123 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 4124 "0545 lpfc_create_static_vport bad" 4125 " information header 0x%x 0x%x\n", 4126 le32_to_cpu(vport_info->signature), 4127 le32_to_cpu(vport_info->rev) & 4128 VPORT_INFO_REV_MASK); 4129 4130 goto out; 4131 } 4132 4133 shost = lpfc_shost_from_vport(phba->pport); 4134 4135 for (i = 0; i < MAX_STATIC_VPORT_COUNT; i++) { 4136 memset(&vport_id, 0, sizeof(vport_id)); 4137 vport_id.port_name = wwn_to_u64(vport_info->vport_list[i].wwpn); 4138 vport_id.node_name = wwn_to_u64(vport_info->vport_list[i].wwnn); 4139 if (!vport_id.port_name || !vport_id.node_name) 4140 continue; 4141 4142 vport_id.roles = FC_PORT_ROLE_FCP_INITIATOR; 4143 vport_id.vport_type = FC_PORTTYPE_NPIV; 4144 vport_id.disable = false; 4145 new_fc_vport = fc_vport_create(shost, 0, &vport_id); 4146 4147 if (!new_fc_vport) { 4148 lpfc_printf_log(phba, KERN_WARNING, LOG_INIT, 4149 "0546 lpfc_create_static_vport failed to" 4150 " create vport\n"); 4151 continue; 4152 } 4153 4154 vport = *(struct lpfc_vport **)new_fc_vport->dd_data; 4155 vport->vport_flag |= STATIC_VPORT; 4156 } 4157 4158 out: 4159 kfree(vport_info); 4160 if (mbx_wait_rc != MBX_TIMEOUT) 4161 lpfc_mbox_rsrc_cleanup(phba, pmb, MBOX_THD_UNLOCKED); 4162 } 4163 4164 /* 4165 * This routine handles processing a Fabric REG_LOGIN mailbox 4166 * command upon completion. It is setup in the LPFC_MBOXQ 4167 * as the completion routine when the command is 4168 * handed off to the SLI layer. 4169 */ 4170 void 4171 lpfc_mbx_cmpl_fabric_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 4172 { 4173 struct lpfc_vport *vport = pmb->vport; 4174 MAILBOX_t *mb = &pmb->u.mb; 4175 struct lpfc_nodelist *ndlp = pmb->ctx_ndlp; 4176 4177 pmb->ctx_ndlp = NULL; 4178 4179 if (mb->mbxStatus) { 4180 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 4181 "0258 Register Fabric login error: 0x%x\n", 4182 mb->mbxStatus); 4183 lpfc_mbox_rsrc_cleanup(phba, pmb, MBOX_THD_UNLOCKED); 4184 if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) { 4185 /* FLOGI failed, use loop map to make discovery list */ 4186 lpfc_disc_list_loopmap(vport); 4187 4188 /* Start discovery */ 4189 lpfc_disc_start(vport); 4190 /* Decrement the reference count to ndlp after the 4191 * reference to the ndlp are done. 4192 */ 4193 lpfc_nlp_put(ndlp); 4194 return; 4195 } 4196 4197 lpfc_vport_set_state(vport, FC_VPORT_FAILED); 4198 /* Decrement the reference count to ndlp after the reference 4199 * to the ndlp are done. 4200 */ 4201 lpfc_nlp_put(ndlp); 4202 return; 4203 } 4204 4205 if (phba->sli_rev < LPFC_SLI_REV4) 4206 ndlp->nlp_rpi = mb->un.varWords[0]; 4207 set_bit(NLP_RPI_REGISTERED, &ndlp->nlp_flag); 4208 ndlp->nlp_type |= NLP_FABRIC; 4209 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE); 4210 4211 if (vport->port_state == LPFC_FABRIC_CFG_LINK) { 4212 /* when physical port receive logo donot start 4213 * vport discovery */ 4214 if (!test_and_clear_bit(FC_LOGO_RCVD_DID_CHNG, &vport->fc_flag)) 4215 lpfc_start_fdiscs(phba); 4216 lpfc_do_scr_ns_plogi(phba, vport); 4217 } 4218 4219 lpfc_mbox_rsrc_cleanup(phba, pmb, MBOX_THD_UNLOCKED); 4220 4221 /* Drop the reference count from the mbox at the end after 4222 * all the current reference to the ndlp have been done. 4223 */ 4224 lpfc_nlp_put(ndlp); 4225 return; 4226 } 4227 4228 /* 4229 * This routine will issue a GID_FT for each FC4 Type supported 4230 * by the driver. ALL GID_FTs must complete before discovery is started. 4231 */ 4232 int 4233 lpfc_issue_gidft(struct lpfc_vport *vport) 4234 { 4235 /* Good status, issue CT Request to NameServer */ 4236 if ((vport->cfg_enable_fc4_type == LPFC_ENABLE_BOTH) || 4237 (vport->cfg_enable_fc4_type == LPFC_ENABLE_FCP)) { 4238 if (lpfc_ns_cmd(vport, SLI_CTNS_GID_FT, 0, SLI_CTPT_FCP)) { 4239 /* Cannot issue NameServer FCP Query, so finish up 4240 * discovery 4241 */ 4242 lpfc_printf_vlog(vport, KERN_ERR, 4243 LOG_TRACE_EVENT, 4244 "0604 %s FC TYPE %x %s\n", 4245 "Failed to issue GID_FT to ", 4246 FC_TYPE_FCP, 4247 "Finishing discovery."); 4248 return 0; 4249 } 4250 vport->gidft_inp++; 4251 } 4252 4253 if ((vport->cfg_enable_fc4_type == LPFC_ENABLE_BOTH) || 4254 (vport->cfg_enable_fc4_type == LPFC_ENABLE_NVME)) { 4255 if (lpfc_ns_cmd(vport, SLI_CTNS_GID_FT, 0, SLI_CTPT_NVME)) { 4256 /* Cannot issue NameServer NVME Query, so finish up 4257 * discovery 4258 */ 4259 lpfc_printf_vlog(vport, KERN_ERR, 4260 LOG_TRACE_EVENT, 4261 "0605 %s FC_TYPE %x %s %d\n", 4262 "Failed to issue GID_FT to ", 4263 FC_TYPE_NVME, 4264 "Finishing discovery: gidftinp ", 4265 vport->gidft_inp); 4266 if (vport->gidft_inp == 0) 4267 return 0; 4268 } else 4269 vport->gidft_inp++; 4270 } 4271 return vport->gidft_inp; 4272 } 4273 4274 /** 4275 * lpfc_issue_gidpt - issue a GID_PT for all N_Ports 4276 * @vport: The virtual port for which this call is being executed. 4277 * 4278 * This routine will issue a GID_PT to get a list of all N_Ports 4279 * 4280 * Return value : 4281 * 0 - Failure to issue a GID_PT 4282 * 1 - GID_PT issued 4283 **/ 4284 int 4285 lpfc_issue_gidpt(struct lpfc_vport *vport) 4286 { 4287 /* Good status, issue CT Request to NameServer */ 4288 if (lpfc_ns_cmd(vport, SLI_CTNS_GID_PT, 0, GID_PT_N_PORT)) { 4289 /* Cannot issue NameServer FCP Query, so finish up 4290 * discovery 4291 */ 4292 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 4293 "0606 %s Port TYPE %x %s\n", 4294 "Failed to issue GID_PT to ", 4295 GID_PT_N_PORT, 4296 "Finishing discovery."); 4297 return 0; 4298 } 4299 vport->gidft_inp++; 4300 return 1; 4301 } 4302 4303 /* 4304 * This routine handles processing a NameServer REG_LOGIN mailbox 4305 * command upon completion. It is setup in the LPFC_MBOXQ 4306 * as the completion routine when the command is 4307 * handed off to the SLI layer. 4308 */ 4309 void 4310 lpfc_mbx_cmpl_ns_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 4311 { 4312 MAILBOX_t *mb = &pmb->u.mb; 4313 struct lpfc_nodelist *ndlp = pmb->ctx_ndlp; 4314 struct lpfc_vport *vport = pmb->vport; 4315 int rc; 4316 4317 pmb->ctx_ndlp = NULL; 4318 vport->gidft_inp = 0; 4319 4320 if (mb->mbxStatus) { 4321 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 4322 "0260 Register NameServer error: 0x%x\n", 4323 mb->mbxStatus); 4324 4325 out: 4326 /* decrement the node reference count held for this 4327 * callback function. 4328 */ 4329 lpfc_nlp_put(ndlp); 4330 lpfc_mbox_rsrc_cleanup(phba, pmb, MBOX_THD_UNLOCKED); 4331 4332 /* If the node is not registered with the scsi or nvme 4333 * transport, remove the fabric node. The failed reg_login 4334 * is terminal and forces the removal of the last node 4335 * reference. 4336 */ 4337 if (!(ndlp->fc4_xpt_flags & (SCSI_XPT_REGD | NVME_XPT_REGD))) { 4338 clear_bit(NLP_NPR_2B_DISC, &ndlp->nlp_flag); 4339 lpfc_nlp_put(ndlp); 4340 } 4341 4342 if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) { 4343 /* 4344 * RegLogin failed, use loop map to make discovery 4345 * list 4346 */ 4347 lpfc_disc_list_loopmap(vport); 4348 4349 /* Start discovery */ 4350 lpfc_disc_start(vport); 4351 return; 4352 } 4353 lpfc_vport_set_state(vport, FC_VPORT_FAILED); 4354 return; 4355 } 4356 4357 if (phba->sli_rev < LPFC_SLI_REV4) 4358 ndlp->nlp_rpi = mb->un.varWords[0]; 4359 set_bit(NLP_RPI_REGISTERED, &ndlp->nlp_flag); 4360 ndlp->nlp_type |= NLP_FABRIC; 4361 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE); 4362 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE | LOG_DISCOVERY, 4363 "0003 rpi:%x DID:%x flg:%lx %d x%px\n", 4364 ndlp->nlp_rpi, ndlp->nlp_DID, ndlp->nlp_flag, 4365 kref_read(&ndlp->kref), 4366 ndlp); 4367 4368 if (vport->port_state < LPFC_VPORT_READY) { 4369 /* Link up discovery requires Fabric registration. */ 4370 lpfc_ns_cmd(vport, SLI_CTNS_RNN_ID, 0, 0); 4371 lpfc_ns_cmd(vport, SLI_CTNS_RSNN_NN, 0, 0); 4372 lpfc_ns_cmd(vport, SLI_CTNS_RSPN_ID, 0, 0); 4373 lpfc_ns_cmd(vport, SLI_CTNS_RFT_ID, 0, 0); 4374 4375 if ((vport->cfg_enable_fc4_type == LPFC_ENABLE_BOTH) || 4376 (vport->cfg_enable_fc4_type == LPFC_ENABLE_FCP)) 4377 lpfc_ns_cmd(vport, SLI_CTNS_RFF_ID, 0, FC_TYPE_FCP); 4378 4379 if ((vport->cfg_enable_fc4_type == LPFC_ENABLE_BOTH) || 4380 (vport->cfg_enable_fc4_type == LPFC_ENABLE_NVME)) 4381 lpfc_ns_cmd(vport, SLI_CTNS_RFF_ID, 0, 4382 FC_TYPE_NVME); 4383 4384 /* Issue SCR just before NameServer GID_FT Query */ 4385 lpfc_issue_els_scr(vport, 0); 4386 4387 /* Link was bounced or a Fabric LOGO occurred. Start EDC 4388 * with initial FW values provided the congestion mode is 4389 * not off. Note that signals may or may not be supported 4390 * by the adapter but FPIN is provided by default for 1 4391 * or both missing signals support. 4392 */ 4393 if (phba->cmf_active_mode != LPFC_CFG_OFF) { 4394 phba->cgn_reg_fpin = phba->cgn_init_reg_fpin; 4395 phba->cgn_reg_signal = phba->cgn_init_reg_signal; 4396 rc = lpfc_issue_els_edc(vport, 0); 4397 lpfc_printf_log(phba, KERN_INFO, 4398 LOG_INIT | LOG_ELS | LOG_DISCOVERY, 4399 "4220 Issue EDC status x%x Data x%x\n", 4400 rc, phba->cgn_init_reg_signal); 4401 } else if (phba->lmt & LMT_64Gb) { 4402 /* may send link fault capability descriptor */ 4403 lpfc_issue_els_edc(vport, 0); 4404 } else { 4405 lpfc_issue_els_rdf(vport, 0); 4406 } 4407 } 4408 4409 vport->fc_ns_retry = 0; 4410 if (lpfc_issue_gidft(vport) == 0) 4411 goto out; 4412 4413 /* 4414 * At this point in time we may need to wait for multiple 4415 * SLI_CTNS_GID_FT CT commands to complete before we start discovery. 4416 * 4417 * decrement the node reference count held for this 4418 * callback function. 4419 */ 4420 lpfc_nlp_put(ndlp); 4421 lpfc_mbox_rsrc_cleanup(phba, pmb, MBOX_THD_UNLOCKED); 4422 return; 4423 } 4424 4425 /* 4426 * This routine handles processing a Fabric Controller REG_LOGIN mailbox 4427 * command upon completion. It is setup in the LPFC_MBOXQ 4428 * as the completion routine when the command is handed off to the SLI layer. 4429 */ 4430 void 4431 lpfc_mbx_cmpl_fc_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 4432 { 4433 struct lpfc_vport *vport = pmb->vport; 4434 MAILBOX_t *mb = &pmb->u.mb; 4435 struct lpfc_nodelist *ndlp = pmb->ctx_ndlp; 4436 4437 pmb->ctx_ndlp = NULL; 4438 if (mb->mbxStatus) { 4439 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 4440 "0933 %s: Register FC login error: 0x%x\n", 4441 __func__, mb->mbxStatus); 4442 goto out; 4443 } 4444 4445 lpfc_check_nlp_post_devloss(vport, ndlp); 4446 4447 if (phba->sli_rev < LPFC_SLI_REV4) 4448 ndlp->nlp_rpi = mb->un.varWords[0]; 4449 4450 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE, 4451 "0934 %s: Complete FC x%x RegLogin rpi x%x ste x%x\n", 4452 __func__, ndlp->nlp_DID, ndlp->nlp_rpi, 4453 ndlp->nlp_state); 4454 4455 set_bit(NLP_RPI_REGISTERED, &ndlp->nlp_flag); 4456 clear_bit(NLP_REG_LOGIN_SEND, &ndlp->nlp_flag); 4457 ndlp->nlp_type |= NLP_FABRIC; 4458 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE); 4459 4460 out: 4461 lpfc_mbox_rsrc_cleanup(phba, pmb, MBOX_THD_UNLOCKED); 4462 4463 /* Drop the reference count from the mbox at the end after 4464 * all the current reference to the ndlp have been done. 4465 */ 4466 lpfc_nlp_put(ndlp); 4467 } 4468 4469 static void 4470 lpfc_register_remote_port(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) 4471 { 4472 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 4473 struct fc_rport *rport; 4474 struct lpfc_rport_data *rdata; 4475 struct fc_rport_identifiers rport_ids; 4476 struct lpfc_hba *phba = vport->phba; 4477 unsigned long flags; 4478 4479 if (vport->cfg_enable_fc4_type == LPFC_ENABLE_NVME) 4480 return; 4481 4482 /* Remote port has reappeared. Re-register w/ FC transport */ 4483 rport_ids.node_name = wwn_to_u64(ndlp->nlp_nodename.u.wwn); 4484 rport_ids.port_name = wwn_to_u64(ndlp->nlp_portname.u.wwn); 4485 rport_ids.port_id = ndlp->nlp_DID; 4486 rport_ids.roles = FC_RPORT_ROLE_UNKNOWN; 4487 4488 4489 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT, 4490 "rport add: did:x%x flg:x%lx type x%x", 4491 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type); 4492 4493 /* Don't add the remote port if unloading. */ 4494 if (test_bit(FC_UNLOADING, &vport->load_flag)) 4495 return; 4496 4497 ndlp->rport = rport = fc_remote_port_add(shost, 0, &rport_ids); 4498 if (!rport) { 4499 dev_printk(KERN_WARNING, &phba->pcidev->dev, 4500 "Warning: fc_remote_port_add failed\n"); 4501 return; 4502 } 4503 4504 /* Successful port add. Complete initializing node data */ 4505 rport->maxframe_size = ndlp->nlp_maxframe; 4506 rport->supported_classes = ndlp->nlp_class_sup; 4507 rdata = rport->dd_data; 4508 rdata->pnode = lpfc_nlp_get(ndlp); 4509 if (!rdata->pnode) { 4510 dev_warn(&phba->pcidev->dev, 4511 "Warning - node ref failed. Unreg rport\n"); 4512 fc_remote_port_delete(rport); 4513 ndlp->rport = NULL; 4514 return; 4515 } 4516 4517 spin_lock_irqsave(&ndlp->lock, flags); 4518 ndlp->fc4_xpt_flags |= SCSI_XPT_REGD; 4519 spin_unlock_irqrestore(&ndlp->lock, flags); 4520 4521 if (ndlp->nlp_type & NLP_FCP_TARGET) 4522 rport_ids.roles |= FC_PORT_ROLE_FCP_TARGET; 4523 if (ndlp->nlp_type & NLP_FCP_INITIATOR) 4524 rport_ids.roles |= FC_PORT_ROLE_FCP_INITIATOR; 4525 if (ndlp->nlp_type & NLP_NVME_INITIATOR) 4526 rport_ids.roles |= FC_PORT_ROLE_NVME_INITIATOR; 4527 if (ndlp->nlp_type & NLP_NVME_TARGET) 4528 rport_ids.roles |= FC_PORT_ROLE_NVME_TARGET; 4529 if (ndlp->nlp_type & NLP_NVME_DISCOVERY) 4530 rport_ids.roles |= FC_PORT_ROLE_NVME_DISCOVERY; 4531 4532 if (rport_ids.roles != FC_RPORT_ROLE_UNKNOWN) 4533 fc_remote_port_rolechg(rport, rport_ids.roles); 4534 4535 lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_NODE, 4536 "3183 %s rport x%px DID x%x, role x%x refcnt %d\n", 4537 __func__, rport, rport->port_id, rport->roles, 4538 kref_read(&ndlp->kref)); 4539 4540 if ((rport->scsi_target_id != -1) && 4541 (rport->scsi_target_id < LPFC_MAX_TARGET)) { 4542 ndlp->nlp_sid = rport->scsi_target_id; 4543 } 4544 4545 return; 4546 } 4547 4548 static void 4549 lpfc_unregister_remote_port(struct lpfc_nodelist *ndlp) 4550 { 4551 struct fc_rport *rport = ndlp->rport; 4552 struct lpfc_vport *vport = ndlp->vport; 4553 4554 if (vport->cfg_enable_fc4_type == LPFC_ENABLE_NVME) 4555 return; 4556 4557 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT, 4558 "rport delete: did:x%x flg:x%lx type x%x", 4559 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type); 4560 4561 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE, 4562 "3184 rport unregister x%06x, rport x%px " 4563 "xptflg x%x refcnt %d\n", 4564 ndlp->nlp_DID, rport, ndlp->fc4_xpt_flags, 4565 kref_read(&ndlp->kref)); 4566 4567 fc_remote_port_delete(rport); 4568 lpfc_nlp_put(ndlp); 4569 } 4570 4571 static void 4572 lpfc_nlp_counters(struct lpfc_vport *vport, int state, int count) 4573 { 4574 switch (state) { 4575 case NLP_STE_UNUSED_NODE: 4576 atomic_add(count, &vport->fc_unused_cnt); 4577 break; 4578 case NLP_STE_PLOGI_ISSUE: 4579 atomic_add(count, &vport->fc_plogi_cnt); 4580 break; 4581 case NLP_STE_ADISC_ISSUE: 4582 atomic_add(count, &vport->fc_adisc_cnt); 4583 break; 4584 case NLP_STE_REG_LOGIN_ISSUE: 4585 atomic_add(count, &vport->fc_reglogin_cnt); 4586 break; 4587 case NLP_STE_PRLI_ISSUE: 4588 atomic_add(count, &vport->fc_prli_cnt); 4589 break; 4590 case NLP_STE_UNMAPPED_NODE: 4591 atomic_add(count, &vport->fc_unmap_cnt); 4592 break; 4593 case NLP_STE_MAPPED_NODE: 4594 atomic_add(count, &vport->fc_map_cnt); 4595 break; 4596 case NLP_STE_NPR_NODE: 4597 if (!atomic_read(&vport->fc_npr_cnt) && count == -1) 4598 atomic_set(&vport->fc_npr_cnt, 0); 4599 else 4600 atomic_add(count, &vport->fc_npr_cnt); 4601 break; 4602 } 4603 } 4604 4605 /* Register a node with backend if not already done */ 4606 void 4607 lpfc_nlp_reg_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) 4608 { 4609 unsigned long iflags; 4610 4611 lpfc_check_nlp_post_devloss(vport, ndlp); 4612 4613 spin_lock_irqsave(&ndlp->lock, iflags); 4614 if (ndlp->fc4_xpt_flags & NLP_XPT_REGD) { 4615 /* Already registered with backend, trigger rescan */ 4616 spin_unlock_irqrestore(&ndlp->lock, iflags); 4617 4618 if (ndlp->fc4_xpt_flags & NVME_XPT_REGD && 4619 ndlp->nlp_type & (NLP_NVME_TARGET | NLP_NVME_DISCOVERY)) { 4620 lpfc_nvme_rescan_port(vport, ndlp); 4621 } 4622 return; 4623 } 4624 4625 ndlp->fc4_xpt_flags |= NLP_XPT_REGD; 4626 spin_unlock_irqrestore(&ndlp->lock, iflags); 4627 4628 if (lpfc_valid_xpt_node(ndlp)) { 4629 vport->phba->nport_event_cnt++; 4630 /* 4631 * Tell the fc transport about the port, if we haven't 4632 * already. If we have, and it's a scsi entity, be 4633 */ 4634 lpfc_register_remote_port(vport, ndlp); 4635 } 4636 4637 /* We are done if we do not have any NVME remote node */ 4638 if (!(ndlp->nlp_fc4_type & NLP_FC4_NVME)) 4639 return; 4640 4641 /* Notify the NVME transport of this new rport. */ 4642 if (vport->phba->sli_rev >= LPFC_SLI_REV4 && 4643 ndlp->nlp_fc4_type & NLP_FC4_NVME) { 4644 if (vport->phba->nvmet_support == 0) { 4645 /* Register this rport with the transport. 4646 * Only NVME Target Rports are registered with 4647 * the transport. 4648 */ 4649 if (ndlp->nlp_type & NLP_NVME_TARGET) { 4650 vport->phba->nport_event_cnt++; 4651 lpfc_nvme_register_port(vport, ndlp); 4652 } 4653 } else { 4654 /* Just take an NDLP ref count since the 4655 * target does not register rports. 4656 */ 4657 lpfc_nlp_get(ndlp); 4658 } 4659 } 4660 } 4661 4662 /* Unregister a node with backend if not already done */ 4663 void 4664 lpfc_nlp_unreg_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) 4665 { 4666 unsigned long iflags; 4667 4668 spin_lock_irqsave(&ndlp->lock, iflags); 4669 if (!(ndlp->fc4_xpt_flags & NLP_XPT_REGD)) { 4670 spin_unlock_irqrestore(&ndlp->lock, iflags); 4671 lpfc_printf_vlog(vport, KERN_INFO, 4672 LOG_ELS | LOG_NODE | LOG_DISCOVERY, 4673 "0999 %s Not regd: ndlp x%px rport x%px DID " 4674 "x%x FLG x%lx XPT x%x\n", 4675 __func__, ndlp, ndlp->rport, ndlp->nlp_DID, 4676 ndlp->nlp_flag, ndlp->fc4_xpt_flags); 4677 return; 4678 } 4679 4680 ndlp->fc4_xpt_flags &= ~NLP_XPT_REGD; 4681 spin_unlock_irqrestore(&ndlp->lock, iflags); 4682 4683 if (ndlp->rport && 4684 ndlp->fc4_xpt_flags & SCSI_XPT_REGD) { 4685 vport->phba->nport_event_cnt++; 4686 lpfc_unregister_remote_port(ndlp); 4687 } else if (!ndlp->rport) { 4688 lpfc_printf_vlog(vport, KERN_INFO, 4689 LOG_ELS | LOG_NODE | LOG_DISCOVERY, 4690 "1999 %s NDLP in devloss x%px DID x%x FLG x%lx" 4691 " XPT x%x refcnt %u\n", 4692 __func__, ndlp, ndlp->nlp_DID, ndlp->nlp_flag, 4693 ndlp->fc4_xpt_flags, 4694 kref_read(&ndlp->kref)); 4695 } 4696 4697 if (ndlp->fc4_xpt_flags & NVME_XPT_REGD) { 4698 vport->phba->nport_event_cnt++; 4699 if (vport->phba->nvmet_support == 0) { 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 timer_delete_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 break; 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 timer_delete_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