1 /******************************************************************* 2 * This file is part of the Emulex Linux Device Driver for * 3 * Fibre Channel Host Bus Adapters. * 4 * Copyright (C) 2017-2021 Broadcom. All Rights Reserved. The term * 5 * “Broadcom” refers to Broadcom Inc. and/or its subsidiaries. * 6 * Copyright (C) 2004-2016 Emulex. All rights reserved. * 7 * EMULEX and SLI are trademarks of Emulex. * 8 * www.broadcom.com * 9 * Portions Copyright (C) 2004-2005 Christoph Hellwig * 10 * * 11 * This program is free software; you can redistribute it and/or * 12 * modify it under the terms of version 2 of the GNU General * 13 * Public License as published by the Free Software Foundation. * 14 * This program is distributed in the hope that it will be useful. * 15 * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND * 16 * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, * 17 * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE * 18 * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD * 19 * TO BE LEGALLY INVALID. See the GNU General Public License for * 20 * more details, a copy of which can be found in the file COPYING * 21 * included with this package. * 22 *******************************************************************/ 23 24 #include <linux/blkdev.h> 25 #include <linux/delay.h> 26 #include <linux/slab.h> 27 #include <linux/pci.h> 28 #include <linux/kthread.h> 29 #include <linux/interrupt.h> 30 #include <linux/lockdep.h> 31 #include <linux/utsname.h> 32 33 #include <scsi/scsi.h> 34 #include <scsi/scsi_device.h> 35 #include <scsi/scsi_host.h> 36 #include <scsi/scsi_transport_fc.h> 37 #include <scsi/fc/fc_fs.h> 38 39 #include "lpfc_hw4.h" 40 #include "lpfc_hw.h" 41 #include "lpfc_nl.h" 42 #include "lpfc_disc.h" 43 #include "lpfc_sli.h" 44 #include "lpfc_sli4.h" 45 #include "lpfc.h" 46 #include "lpfc_scsi.h" 47 #include "lpfc_nvme.h" 48 #include "lpfc_logmsg.h" 49 #include "lpfc_crtn.h" 50 #include "lpfc_vport.h" 51 #include "lpfc_debugfs.h" 52 53 /* AlpaArray for assignment of scsid for scan-down and bind_method */ 54 static uint8_t lpfcAlpaArray[] = { 55 0xEF, 0xE8, 0xE4, 0xE2, 0xE1, 0xE0, 0xDC, 0xDA, 0xD9, 0xD6, 56 0xD5, 0xD4, 0xD3, 0xD2, 0xD1, 0xCE, 0xCD, 0xCC, 0xCB, 0xCA, 57 0xC9, 0xC7, 0xC6, 0xC5, 0xC3, 0xBC, 0xBA, 0xB9, 0xB6, 0xB5, 58 0xB4, 0xB3, 0xB2, 0xB1, 0xAE, 0xAD, 0xAC, 0xAB, 0xAA, 0xA9, 59 0xA7, 0xA6, 0xA5, 0xA3, 0x9F, 0x9E, 0x9D, 0x9B, 0x98, 0x97, 60 0x90, 0x8F, 0x88, 0x84, 0x82, 0x81, 0x80, 0x7C, 0x7A, 0x79, 61 0x76, 0x75, 0x74, 0x73, 0x72, 0x71, 0x6E, 0x6D, 0x6C, 0x6B, 62 0x6A, 0x69, 0x67, 0x66, 0x65, 0x63, 0x5C, 0x5A, 0x59, 0x56, 63 0x55, 0x54, 0x53, 0x52, 0x51, 0x4E, 0x4D, 0x4C, 0x4B, 0x4A, 64 0x49, 0x47, 0x46, 0x45, 0x43, 0x3C, 0x3A, 0x39, 0x36, 0x35, 65 0x34, 0x33, 0x32, 0x31, 0x2E, 0x2D, 0x2C, 0x2B, 0x2A, 0x29, 66 0x27, 0x26, 0x25, 0x23, 0x1F, 0x1E, 0x1D, 0x1B, 0x18, 0x17, 67 0x10, 0x0F, 0x08, 0x04, 0x02, 0x01 68 }; 69 70 static void lpfc_disc_timeout_handler(struct lpfc_vport *); 71 static void lpfc_disc_flush_list(struct lpfc_vport *vport); 72 static void lpfc_unregister_fcfi_cmpl(struct lpfc_hba *, LPFC_MBOXQ_t *); 73 static int lpfc_fcf_inuse(struct lpfc_hba *); 74 static void lpfc_mbx_cmpl_read_sparam(struct lpfc_hba *, LPFC_MBOXQ_t *); 75 static void lpfc_check_inactive_vmid(struct lpfc_hba *phba); 76 static void lpfc_check_vmid_qfpa_issue(struct lpfc_hba *phba); 77 78 static int 79 lpfc_valid_xpt_node(struct lpfc_nodelist *ndlp) 80 { 81 if (ndlp->nlp_fc4_type || 82 ndlp->nlp_type & NLP_FABRIC) 83 return 1; 84 return 0; 85 } 86 /* The source of a terminate rport I/O is either a dev_loss_tmo 87 * event or a call to fc_remove_host. While the rport should be 88 * valid during these downcalls, the transport can call twice 89 * in a single event. This routine provides somoe protection 90 * as the NDLP isn't really free, just released to the pool. 91 */ 92 static int 93 lpfc_rport_invalid(struct fc_rport *rport) 94 { 95 struct lpfc_rport_data *rdata; 96 struct lpfc_nodelist *ndlp; 97 98 if (!rport) { 99 pr_err("**** %s: NULL rport, exit.\n", __func__); 100 return -EINVAL; 101 } 102 103 rdata = rport->dd_data; 104 if (!rdata) { 105 pr_err("**** %s: NULL dd_data on rport x%px SID x%x\n", 106 __func__, rport, rport->scsi_target_id); 107 return -EINVAL; 108 } 109 110 ndlp = rdata->pnode; 111 if (!rdata->pnode) { 112 pr_err("**** %s: NULL ndlp on rport x%px SID x%x\n", 113 __func__, rport, rport->scsi_target_id); 114 return -EINVAL; 115 } 116 117 if (!ndlp->vport) { 118 pr_err("**** %s: Null vport on ndlp x%px, DID x%x rport x%px " 119 "SID x%x\n", __func__, ndlp, ndlp->nlp_DID, rport, 120 rport->scsi_target_id); 121 return -EINVAL; 122 } 123 return 0; 124 } 125 126 void 127 lpfc_terminate_rport_io(struct fc_rport *rport) 128 { 129 struct lpfc_rport_data *rdata; 130 struct lpfc_nodelist *ndlp; 131 struct lpfc_vport *vport; 132 133 if (lpfc_rport_invalid(rport)) 134 return; 135 136 rdata = rport->dd_data; 137 ndlp = rdata->pnode; 138 vport = ndlp->vport; 139 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT, 140 "rport terminate: sid:x%x did:x%x flg:x%x", 141 ndlp->nlp_sid, ndlp->nlp_DID, ndlp->nlp_flag); 142 143 if (ndlp->nlp_sid != NLP_NO_SID) 144 lpfc_sli_abort_iocb(vport, ndlp->nlp_sid, 0, LPFC_CTX_TGT); 145 } 146 147 /* 148 * This function will be called when dev_loss_tmo fire. 149 */ 150 void 151 lpfc_dev_loss_tmo_callbk(struct fc_rport *rport) 152 { 153 struct lpfc_nodelist *ndlp; 154 struct lpfc_vport *vport; 155 struct lpfc_hba *phba; 156 struct lpfc_work_evt *evtp; 157 unsigned long iflags; 158 159 ndlp = ((struct lpfc_rport_data *)rport->dd_data)->pnode; 160 if (!ndlp) 161 return; 162 163 vport = ndlp->vport; 164 phba = vport->phba; 165 166 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT, 167 "rport devlosscb: sid:x%x did:x%x flg:x%x", 168 ndlp->nlp_sid, ndlp->nlp_DID, ndlp->nlp_flag); 169 170 lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_NODE, 171 "3181 dev_loss_callbk x%06x, rport x%px flg x%x " 172 "load_flag x%x refcnt %d\n", 173 ndlp->nlp_DID, ndlp->rport, ndlp->nlp_flag, 174 vport->load_flag, kref_read(&ndlp->kref)); 175 176 /* Don't schedule a worker thread event if the vport is going down. 177 * The teardown process cleans up the node via lpfc_drop_node. 178 */ 179 if (vport->load_flag & FC_UNLOADING) { 180 ((struct lpfc_rport_data *)rport->dd_data)->pnode = NULL; 181 ndlp->rport = NULL; 182 183 ndlp->fc4_xpt_flags &= ~SCSI_XPT_REGD; 184 185 /* Remove the node reference from remote_port_add now. 186 * The driver will not call remote_port_delete. 187 */ 188 lpfc_nlp_put(ndlp); 189 return; 190 } 191 192 if (ndlp->nlp_state == NLP_STE_MAPPED_NODE) 193 return; 194 195 if (rport->port_name != wwn_to_u64(ndlp->nlp_portname.u.wwn)) 196 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 197 "6789 rport name %llx != node port name %llx", 198 rport->port_name, 199 wwn_to_u64(ndlp->nlp_portname.u.wwn)); 200 201 evtp = &ndlp->dev_loss_evt; 202 203 if (!list_empty(&evtp->evt_listp)) { 204 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 205 "6790 rport name %llx dev_loss_evt pending\n", 206 rport->port_name); 207 return; 208 } 209 210 spin_lock_irqsave(&ndlp->lock, iflags); 211 ndlp->nlp_flag |= NLP_IN_DEV_LOSS; 212 213 /* If there is a PLOGI in progress, and we are in a 214 * NLP_NPR_2B_DISC state, don't turn off the flag. 215 */ 216 if (ndlp->nlp_state != NLP_STE_PLOGI_ISSUE) 217 ndlp->nlp_flag &= ~NLP_NPR_2B_DISC; 218 219 /* 220 * The backend does not expect any more calls associated with this 221 * rport. Remove the association between rport and ndlp. 222 */ 223 ndlp->fc4_xpt_flags &= ~SCSI_XPT_REGD; 224 ((struct lpfc_rport_data *)rport->dd_data)->pnode = NULL; 225 ndlp->rport = NULL; 226 spin_unlock_irqrestore(&ndlp->lock, iflags); 227 228 /* We need to hold the node by incrementing the reference 229 * count until this queued work is done 230 */ 231 evtp->evt_arg1 = lpfc_nlp_get(ndlp); 232 233 spin_lock_irqsave(&phba->hbalock, iflags); 234 if (evtp->evt_arg1) { 235 evtp->evt = LPFC_EVT_DEV_LOSS; 236 list_add_tail(&evtp->evt_listp, &phba->work_list); 237 lpfc_worker_wake_up(phba); 238 } 239 spin_unlock_irqrestore(&phba->hbalock, iflags); 240 241 return; 242 } 243 244 /** 245 * lpfc_check_inactive_vmid_one - VMID inactivity checker for a vport 246 * @vport: Pointer to vport context object. 247 * 248 * This function checks for idle VMID entries related to a particular vport. If 249 * found unused/idle, free them accordingly. 250 **/ 251 static void lpfc_check_inactive_vmid_one(struct lpfc_vport *vport) 252 { 253 u16 keep; 254 u32 difftime = 0, r, bucket; 255 u64 *lta; 256 int cpu; 257 struct lpfc_vmid *vmp; 258 259 write_lock(&vport->vmid_lock); 260 261 if (!vport->cur_vmid_cnt) 262 goto out; 263 264 /* iterate through the table */ 265 hash_for_each(vport->hash_table, bucket, vmp, hnode) { 266 keep = 0; 267 if (vmp->flag & LPFC_VMID_REGISTERED) { 268 /* check if the particular VMID is in use */ 269 /* for all available per cpu variable */ 270 for_each_possible_cpu(cpu) { 271 /* if last access time is less than timeout */ 272 lta = per_cpu_ptr(vmp->last_io_time, cpu); 273 if (!lta) 274 continue; 275 difftime = (jiffies) - (*lta); 276 if ((vport->vmid_inactivity_timeout * 277 JIFFIES_PER_HR) > difftime) { 278 keep = 1; 279 break; 280 } 281 } 282 283 /* if none of the cpus have been used by the vm, */ 284 /* remove the entry if already registered */ 285 if (!keep) { 286 /* mark the entry for deregistration */ 287 vmp->flag = LPFC_VMID_DE_REGISTER; 288 write_unlock(&vport->vmid_lock); 289 if (vport->vmid_priority_tagging) 290 r = lpfc_vmid_uvem(vport, vmp, false); 291 else 292 r = lpfc_vmid_cmd(vport, 293 SLI_CTAS_DAPP_IDENT, 294 vmp); 295 296 /* decrement number of active vms and mark */ 297 /* entry in slot as free */ 298 write_lock(&vport->vmid_lock); 299 if (!r) { 300 struct lpfc_vmid *ht = vmp; 301 302 vport->cur_vmid_cnt--; 303 ht->flag = LPFC_VMID_SLOT_FREE; 304 free_percpu(ht->last_io_time); 305 ht->last_io_time = NULL; 306 hash_del(&ht->hnode); 307 } 308 } 309 } 310 } 311 out: 312 write_unlock(&vport->vmid_lock); 313 } 314 315 /** 316 * lpfc_check_inactive_vmid - VMID inactivity checker 317 * @phba: Pointer to hba context object. 318 * 319 * This function is called from the worker thread to determine if an entry in 320 * the VMID table can be released since there was no I/O activity seen from that 321 * particular VM for the specified time. When this happens, the entry in the 322 * table is released and also the resources on the switch cleared. 323 **/ 324 325 static void lpfc_check_inactive_vmid(struct lpfc_hba *phba) 326 { 327 struct lpfc_vport *vport; 328 struct lpfc_vport **vports; 329 int i; 330 331 vports = lpfc_create_vport_work_array(phba); 332 if (!vports) 333 return; 334 335 for (i = 0; i <= phba->max_vports; i++) { 336 if ((!vports[i]) && (i == 0)) 337 vport = phba->pport; 338 else 339 vport = vports[i]; 340 if (!vport) 341 break; 342 343 lpfc_check_inactive_vmid_one(vport); 344 } 345 lpfc_destroy_vport_work_array(phba, vports); 346 } 347 348 /** 349 * lpfc_check_nlp_post_devloss - Check to restore ndlp refcnt after devloss 350 * @vport: Pointer to vport object. 351 * @ndlp: Pointer to remote node object. 352 * 353 * If NLP_IN_RECOV_POST_DEV_LOSS flag was set due to outstanding recovery of 354 * node during dev_loss_tmo processing, then this function restores the nlp_put 355 * kref decrement from lpfc_dev_loss_tmo_handler. 356 **/ 357 void 358 lpfc_check_nlp_post_devloss(struct lpfc_vport *vport, 359 struct lpfc_nodelist *ndlp) 360 { 361 unsigned long iflags; 362 363 spin_lock_irqsave(&ndlp->lock, iflags); 364 if (ndlp->save_flags & NLP_IN_RECOV_POST_DEV_LOSS) { 365 ndlp->save_flags &= ~NLP_IN_RECOV_POST_DEV_LOSS; 366 spin_unlock_irqrestore(&ndlp->lock, iflags); 367 lpfc_nlp_get(ndlp); 368 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY | LOG_NODE, 369 "8438 Devloss timeout reversed on DID x%x " 370 "refcnt %d ndlp %p flag x%x " 371 "port_state = x%x\n", 372 ndlp->nlp_DID, kref_read(&ndlp->kref), ndlp, 373 ndlp->nlp_flag, vport->port_state); 374 spin_lock_irqsave(&ndlp->lock, iflags); 375 } 376 spin_unlock_irqrestore(&ndlp->lock, iflags); 377 } 378 379 /** 380 * lpfc_dev_loss_tmo_handler - Remote node devloss timeout handler 381 * @ndlp: Pointer to remote node object. 382 * 383 * This function is called from the worker thread when devloss timeout timer 384 * expires. For SLI4 host, this routine shall return 1 when at lease one 385 * remote node, including this @ndlp, is still in use of FCF; otherwise, this 386 * routine shall return 0 when there is no remote node is still in use of FCF 387 * when devloss timeout happened to this @ndlp. 388 **/ 389 static int 390 lpfc_dev_loss_tmo_handler(struct lpfc_nodelist *ndlp) 391 { 392 struct lpfc_vport *vport; 393 struct lpfc_hba *phba; 394 uint8_t *name; 395 int warn_on = 0; 396 int fcf_inuse = 0; 397 bool recovering = false; 398 struct fc_vport *fc_vport = NULL; 399 unsigned long iflags; 400 401 vport = ndlp->vport; 402 name = (uint8_t *)&ndlp->nlp_portname; 403 phba = vport->phba; 404 405 spin_lock_irqsave(&ndlp->lock, iflags); 406 ndlp->nlp_flag &= ~NLP_IN_DEV_LOSS; 407 spin_unlock_irqrestore(&ndlp->lock, iflags); 408 409 if (phba->sli_rev == LPFC_SLI_REV4) 410 fcf_inuse = lpfc_fcf_inuse(phba); 411 412 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT, 413 "rport devlosstmo:did:x%x type:x%x id:x%x", 414 ndlp->nlp_DID, ndlp->nlp_type, ndlp->nlp_sid); 415 416 lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_NODE, 417 "3182 %s x%06x, nflag x%x xflags x%x refcnt %d\n", 418 __func__, ndlp->nlp_DID, ndlp->nlp_flag, 419 ndlp->fc4_xpt_flags, kref_read(&ndlp->kref)); 420 421 /* If the driver is recovering the rport, ignore devloss. */ 422 if (ndlp->nlp_state == NLP_STE_MAPPED_NODE) { 423 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, 424 "0284 Devloss timeout Ignored on " 425 "WWPN %x:%x:%x:%x:%x:%x:%x:%x " 426 "NPort x%x\n", 427 *name, *(name+1), *(name+2), *(name+3), 428 *(name+4), *(name+5), *(name+6), *(name+7), 429 ndlp->nlp_DID); 430 return fcf_inuse; 431 } 432 433 /* Fabric nodes are done. */ 434 if (ndlp->nlp_type & NLP_FABRIC) { 435 spin_lock_irqsave(&ndlp->lock, iflags); 436 /* In massive vport configuration settings, it's possible 437 * dev_loss_tmo fired during node recovery. So, check if 438 * fabric nodes are in discovery states outstanding. 439 */ 440 switch (ndlp->nlp_DID) { 441 case Fabric_DID: 442 fc_vport = vport->fc_vport; 443 if (fc_vport && 444 fc_vport->vport_state == FC_VPORT_INITIALIZING) 445 recovering = true; 446 break; 447 case Fabric_Cntl_DID: 448 if (ndlp->nlp_flag & NLP_REG_LOGIN_SEND) 449 recovering = true; 450 break; 451 case FDMI_DID: 452 fallthrough; 453 case NameServer_DID: 454 if (ndlp->nlp_state >= NLP_STE_PLOGI_ISSUE && 455 ndlp->nlp_state <= NLP_STE_REG_LOGIN_ISSUE) 456 recovering = true; 457 break; 458 } 459 spin_unlock_irqrestore(&ndlp->lock, iflags); 460 461 /* Mark an NLP_IN_RECOV_POST_DEV_LOSS flag to know if reversing 462 * the following lpfc_nlp_put is necessary after fabric node is 463 * recovered. 464 */ 465 if (recovering) { 466 lpfc_printf_vlog(vport, KERN_INFO, 467 LOG_DISCOVERY | LOG_NODE, 468 "8436 Devloss timeout marked on " 469 "DID x%x refcnt %d ndlp %p " 470 "flag x%x port_state = x%x\n", 471 ndlp->nlp_DID, kref_read(&ndlp->kref), 472 ndlp, ndlp->nlp_flag, 473 vport->port_state); 474 spin_lock_irqsave(&ndlp->lock, iflags); 475 ndlp->save_flags |= NLP_IN_RECOV_POST_DEV_LOSS; 476 spin_unlock_irqrestore(&ndlp->lock, iflags); 477 } else if (ndlp->nlp_state == NLP_STE_UNMAPPED_NODE) { 478 /* Fabric node fully recovered before this dev_loss_tmo 479 * queue work is processed. Thus, ignore the 480 * dev_loss_tmo event. 481 */ 482 lpfc_printf_vlog(vport, KERN_INFO, 483 LOG_DISCOVERY | LOG_NODE, 484 "8437 Devloss timeout ignored on " 485 "DID x%x refcnt %d ndlp %p " 486 "flag x%x port_state = x%x\n", 487 ndlp->nlp_DID, kref_read(&ndlp->kref), 488 ndlp, ndlp->nlp_flag, 489 vport->port_state); 490 return fcf_inuse; 491 } 492 493 lpfc_nlp_put(ndlp); 494 return fcf_inuse; 495 } 496 497 if (ndlp->nlp_sid != NLP_NO_SID) { 498 warn_on = 1; 499 lpfc_sli_abort_iocb(vport, ndlp->nlp_sid, 0, LPFC_CTX_TGT); 500 } 501 502 if (warn_on) { 503 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 504 "0203 Devloss timeout on " 505 "WWPN %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x " 506 "NPort x%06x Data: x%x x%x x%x\n", 507 *name, *(name+1), *(name+2), *(name+3), 508 *(name+4), *(name+5), *(name+6), *(name+7), 509 ndlp->nlp_DID, ndlp->nlp_flag, 510 ndlp->nlp_state, ndlp->nlp_rpi); 511 } else { 512 lpfc_printf_vlog(vport, KERN_INFO, LOG_TRACE_EVENT, 513 "0204 Devloss timeout on " 514 "WWPN %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x " 515 "NPort x%06x Data: x%x x%x x%x\n", 516 *name, *(name+1), *(name+2), *(name+3), 517 *(name+4), *(name+5), *(name+6), *(name+7), 518 ndlp->nlp_DID, ndlp->nlp_flag, 519 ndlp->nlp_state, ndlp->nlp_rpi); 520 } 521 522 /* If we are devloss, but we are in the process of rediscovering the 523 * ndlp, don't issue a NLP_EVT_DEVICE_RM event. 524 */ 525 if (ndlp->nlp_state >= NLP_STE_PLOGI_ISSUE && 526 ndlp->nlp_state <= NLP_STE_PRLI_ISSUE) { 527 return fcf_inuse; 528 } 529 530 if (!(ndlp->fc4_xpt_flags & NVME_XPT_REGD)) 531 lpfc_disc_state_machine(vport, ndlp, NULL, NLP_EVT_DEVICE_RM); 532 533 return fcf_inuse; 534 } 535 536 static void lpfc_check_vmid_qfpa_issue(struct lpfc_hba *phba) 537 { 538 struct lpfc_vport *vport; 539 struct lpfc_vport **vports; 540 int i; 541 542 vports = lpfc_create_vport_work_array(phba); 543 if (!vports) 544 return; 545 546 for (i = 0; i <= phba->max_vports; i++) { 547 if ((!vports[i]) && (i == 0)) 548 vport = phba->pport; 549 else 550 vport = vports[i]; 551 if (!vport) 552 break; 553 554 if (vport->vmid_flag & LPFC_VMID_ISSUE_QFPA) { 555 if (!lpfc_issue_els_qfpa(vport)) 556 vport->vmid_flag &= ~LPFC_VMID_ISSUE_QFPA; 557 } 558 } 559 lpfc_destroy_vport_work_array(phba, vports); 560 } 561 562 /** 563 * lpfc_sli4_post_dev_loss_tmo_handler - SLI4 post devloss timeout handler 564 * @phba: Pointer to hba context object. 565 * @fcf_inuse: SLI4 FCF in-use state reported from devloss timeout handler. 566 * @nlp_did: remote node identifer with devloss timeout. 567 * 568 * This function is called from the worker thread after invoking devloss 569 * timeout handler and releasing the reference count for the ndlp with 570 * which the devloss timeout was handled for SLI4 host. For the devloss 571 * timeout of the last remote node which had been in use of FCF, when this 572 * routine is invoked, it shall be guaranteed that none of the remote are 573 * in-use of FCF. When devloss timeout to the last remote using the FCF, 574 * if the FIP engine is neither in FCF table scan process nor roundrobin 575 * failover process, the in-use FCF shall be unregistered. If the FIP 576 * engine is in FCF discovery process, the devloss timeout state shall 577 * be set for either the FCF table scan process or roundrobin failover 578 * process to unregister the in-use FCF. 579 **/ 580 static void 581 lpfc_sli4_post_dev_loss_tmo_handler(struct lpfc_hba *phba, int fcf_inuse, 582 uint32_t nlp_did) 583 { 584 /* If devloss timeout happened to a remote node when FCF had no 585 * longer been in-use, do nothing. 586 */ 587 if (!fcf_inuse) 588 return; 589 590 if ((phba->hba_flag & HBA_FIP_SUPPORT) && !lpfc_fcf_inuse(phba)) { 591 spin_lock_irq(&phba->hbalock); 592 if (phba->fcf.fcf_flag & FCF_DISCOVERY) { 593 if (phba->hba_flag & HBA_DEVLOSS_TMO) { 594 spin_unlock_irq(&phba->hbalock); 595 return; 596 } 597 phba->hba_flag |= HBA_DEVLOSS_TMO; 598 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 599 "2847 Last remote node (x%x) using " 600 "FCF devloss tmo\n", nlp_did); 601 } 602 if (phba->fcf.fcf_flag & FCF_REDISC_PROG) { 603 spin_unlock_irq(&phba->hbalock); 604 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 605 "2868 Devloss tmo to FCF rediscovery " 606 "in progress\n"); 607 return; 608 } 609 if (!(phba->hba_flag & (FCF_TS_INPROG | FCF_RR_INPROG))) { 610 spin_unlock_irq(&phba->hbalock); 611 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 612 "2869 Devloss tmo to idle FIP engine, " 613 "unreg in-use FCF and rescan.\n"); 614 /* Unregister in-use FCF and rescan */ 615 lpfc_unregister_fcf_rescan(phba); 616 return; 617 } 618 spin_unlock_irq(&phba->hbalock); 619 if (phba->hba_flag & FCF_TS_INPROG) 620 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 621 "2870 FCF table scan in progress\n"); 622 if (phba->hba_flag & FCF_RR_INPROG) 623 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 624 "2871 FLOGI roundrobin FCF failover " 625 "in progress\n"); 626 } 627 lpfc_unregister_unused_fcf(phba); 628 } 629 630 /** 631 * lpfc_alloc_fast_evt - Allocates data structure for posting event 632 * @phba: Pointer to hba context object. 633 * 634 * This function is called from the functions which need to post 635 * events from interrupt context. This function allocates data 636 * structure required for posting event. It also keeps track of 637 * number of events pending and prevent event storm when there are 638 * too many events. 639 **/ 640 struct lpfc_fast_path_event * 641 lpfc_alloc_fast_evt(struct lpfc_hba *phba) { 642 struct lpfc_fast_path_event *ret; 643 644 /* If there are lot of fast event do not exhaust memory due to this */ 645 if (atomic_read(&phba->fast_event_count) > LPFC_MAX_EVT_COUNT) 646 return NULL; 647 648 ret = kzalloc(sizeof(struct lpfc_fast_path_event), 649 GFP_ATOMIC); 650 if (ret) { 651 atomic_inc(&phba->fast_event_count); 652 INIT_LIST_HEAD(&ret->work_evt.evt_listp); 653 ret->work_evt.evt = LPFC_EVT_FASTPATH_MGMT_EVT; 654 } 655 return ret; 656 } 657 658 /** 659 * lpfc_free_fast_evt - Frees event data structure 660 * @phba: Pointer to hba context object. 661 * @evt: Event object which need to be freed. 662 * 663 * This function frees the data structure required for posting 664 * events. 665 **/ 666 void 667 lpfc_free_fast_evt(struct lpfc_hba *phba, 668 struct lpfc_fast_path_event *evt) { 669 670 atomic_dec(&phba->fast_event_count); 671 kfree(evt); 672 } 673 674 /** 675 * lpfc_send_fastpath_evt - Posts events generated from fast path 676 * @phba: Pointer to hba context object. 677 * @evtp: Event data structure. 678 * 679 * This function is called from worker thread, when the interrupt 680 * context need to post an event. This function posts the event 681 * to fc transport netlink interface. 682 **/ 683 static void 684 lpfc_send_fastpath_evt(struct lpfc_hba *phba, 685 struct lpfc_work_evt *evtp) 686 { 687 unsigned long evt_category, evt_sub_category; 688 struct lpfc_fast_path_event *fast_evt_data; 689 char *evt_data; 690 uint32_t evt_data_size; 691 struct Scsi_Host *shost; 692 693 fast_evt_data = container_of(evtp, struct lpfc_fast_path_event, 694 work_evt); 695 696 evt_category = (unsigned long) fast_evt_data->un.fabric_evt.event_type; 697 evt_sub_category = (unsigned long) fast_evt_data->un. 698 fabric_evt.subcategory; 699 shost = lpfc_shost_from_vport(fast_evt_data->vport); 700 if (evt_category == FC_REG_FABRIC_EVENT) { 701 if (evt_sub_category == LPFC_EVENT_FCPRDCHKERR) { 702 evt_data = (char *) &fast_evt_data->un.read_check_error; 703 evt_data_size = sizeof(fast_evt_data->un. 704 read_check_error); 705 } else if ((evt_sub_category == LPFC_EVENT_FABRIC_BUSY) || 706 (evt_sub_category == LPFC_EVENT_PORT_BUSY)) { 707 evt_data = (char *) &fast_evt_data->un.fabric_evt; 708 evt_data_size = sizeof(fast_evt_data->un.fabric_evt); 709 } else { 710 lpfc_free_fast_evt(phba, fast_evt_data); 711 return; 712 } 713 } else if (evt_category == FC_REG_SCSI_EVENT) { 714 switch (evt_sub_category) { 715 case LPFC_EVENT_QFULL: 716 case LPFC_EVENT_DEVBSY: 717 evt_data = (char *) &fast_evt_data->un.scsi_evt; 718 evt_data_size = sizeof(fast_evt_data->un.scsi_evt); 719 break; 720 case LPFC_EVENT_CHECK_COND: 721 evt_data = (char *) &fast_evt_data->un.check_cond_evt; 722 evt_data_size = sizeof(fast_evt_data->un. 723 check_cond_evt); 724 break; 725 case LPFC_EVENT_VARQUEDEPTH: 726 evt_data = (char *) &fast_evt_data->un.queue_depth_evt; 727 evt_data_size = sizeof(fast_evt_data->un. 728 queue_depth_evt); 729 break; 730 default: 731 lpfc_free_fast_evt(phba, fast_evt_data); 732 return; 733 } 734 } else { 735 lpfc_free_fast_evt(phba, fast_evt_data); 736 return; 737 } 738 739 if (phba->cfg_enable_fc4_type != LPFC_ENABLE_NVME) 740 fc_host_post_vendor_event(shost, 741 fc_get_event_number(), 742 evt_data_size, 743 evt_data, 744 LPFC_NL_VENDOR_ID); 745 746 lpfc_free_fast_evt(phba, fast_evt_data); 747 return; 748 } 749 750 static void 751 lpfc_work_list_done(struct lpfc_hba *phba) 752 { 753 struct lpfc_work_evt *evtp = NULL; 754 struct lpfc_nodelist *ndlp; 755 int free_evt; 756 int fcf_inuse; 757 uint32_t nlp_did; 758 759 spin_lock_irq(&phba->hbalock); 760 while (!list_empty(&phba->work_list)) { 761 list_remove_head((&phba->work_list), evtp, typeof(*evtp), 762 evt_listp); 763 spin_unlock_irq(&phba->hbalock); 764 free_evt = 1; 765 switch (evtp->evt) { 766 case LPFC_EVT_ELS_RETRY: 767 ndlp = (struct lpfc_nodelist *) (evtp->evt_arg1); 768 lpfc_els_retry_delay_handler(ndlp); 769 free_evt = 0; /* evt is part of ndlp */ 770 /* decrement the node reference count held 771 * for this queued work 772 */ 773 lpfc_nlp_put(ndlp); 774 break; 775 case LPFC_EVT_DEV_LOSS: 776 ndlp = (struct lpfc_nodelist *)(evtp->evt_arg1); 777 fcf_inuse = lpfc_dev_loss_tmo_handler(ndlp); 778 free_evt = 0; 779 /* decrement the node reference count held for 780 * this queued work 781 */ 782 nlp_did = ndlp->nlp_DID; 783 lpfc_nlp_put(ndlp); 784 if (phba->sli_rev == LPFC_SLI_REV4) 785 lpfc_sli4_post_dev_loss_tmo_handler(phba, 786 fcf_inuse, 787 nlp_did); 788 break; 789 case LPFC_EVT_RECOVER_PORT: 790 ndlp = (struct lpfc_nodelist *)(evtp->evt_arg1); 791 lpfc_sli_abts_recover_port(ndlp->vport, ndlp); 792 free_evt = 0; 793 /* decrement the node reference count held for 794 * this queued work 795 */ 796 lpfc_nlp_put(ndlp); 797 break; 798 case LPFC_EVT_ONLINE: 799 if (phba->link_state < LPFC_LINK_DOWN) 800 *(int *) (evtp->evt_arg1) = lpfc_online(phba); 801 else 802 *(int *) (evtp->evt_arg1) = 0; 803 complete((struct completion *)(evtp->evt_arg2)); 804 break; 805 case LPFC_EVT_OFFLINE_PREP: 806 if (phba->link_state >= LPFC_LINK_DOWN) 807 lpfc_offline_prep(phba, LPFC_MBX_WAIT); 808 *(int *)(evtp->evt_arg1) = 0; 809 complete((struct completion *)(evtp->evt_arg2)); 810 break; 811 case LPFC_EVT_OFFLINE: 812 lpfc_offline(phba); 813 lpfc_sli_brdrestart(phba); 814 *(int *)(evtp->evt_arg1) = 815 lpfc_sli_brdready(phba, HS_FFRDY | HS_MBRDY); 816 lpfc_unblock_mgmt_io(phba); 817 complete((struct completion *)(evtp->evt_arg2)); 818 break; 819 case LPFC_EVT_WARM_START: 820 lpfc_offline(phba); 821 lpfc_reset_barrier(phba); 822 lpfc_sli_brdreset(phba); 823 lpfc_hba_down_post(phba); 824 *(int *)(evtp->evt_arg1) = 825 lpfc_sli_brdready(phba, HS_MBRDY); 826 lpfc_unblock_mgmt_io(phba); 827 complete((struct completion *)(evtp->evt_arg2)); 828 break; 829 case LPFC_EVT_KILL: 830 lpfc_offline(phba); 831 *(int *)(evtp->evt_arg1) 832 = (phba->pport->stopped) 833 ? 0 : lpfc_sli_brdkill(phba); 834 lpfc_unblock_mgmt_io(phba); 835 complete((struct completion *)(evtp->evt_arg2)); 836 break; 837 case LPFC_EVT_FASTPATH_MGMT_EVT: 838 lpfc_send_fastpath_evt(phba, evtp); 839 free_evt = 0; 840 break; 841 case LPFC_EVT_RESET_HBA: 842 if (!(phba->pport->load_flag & FC_UNLOADING)) 843 lpfc_reset_hba(phba); 844 break; 845 } 846 if (free_evt) 847 kfree(evtp); 848 spin_lock_irq(&phba->hbalock); 849 } 850 spin_unlock_irq(&phba->hbalock); 851 852 } 853 854 static void 855 lpfc_work_done(struct lpfc_hba *phba) 856 { 857 struct lpfc_sli_ring *pring; 858 uint32_t ha_copy, status, control, work_port_events; 859 struct lpfc_vport **vports; 860 struct lpfc_vport *vport; 861 int i; 862 863 spin_lock_irq(&phba->hbalock); 864 ha_copy = phba->work_ha; 865 phba->work_ha = 0; 866 spin_unlock_irq(&phba->hbalock); 867 868 /* First, try to post the next mailbox command to SLI4 device */ 869 if (phba->pci_dev_grp == LPFC_PCI_DEV_OC) 870 lpfc_sli4_post_async_mbox(phba); 871 872 if (ha_copy & HA_ERATT) { 873 /* Handle the error attention event */ 874 lpfc_handle_eratt(phba); 875 876 if (phba->fw_dump_cmpl) { 877 complete(phba->fw_dump_cmpl); 878 phba->fw_dump_cmpl = NULL; 879 } 880 } 881 882 if (ha_copy & HA_MBATT) 883 lpfc_sli_handle_mb_event(phba); 884 885 if (ha_copy & HA_LATT) 886 lpfc_handle_latt(phba); 887 888 /* Handle VMID Events */ 889 if (lpfc_is_vmid_enabled(phba)) { 890 if (phba->pport->work_port_events & 891 WORKER_CHECK_VMID_ISSUE_QFPA) { 892 lpfc_check_vmid_qfpa_issue(phba); 893 phba->pport->work_port_events &= 894 ~WORKER_CHECK_VMID_ISSUE_QFPA; 895 } 896 if (phba->pport->work_port_events & 897 WORKER_CHECK_INACTIVE_VMID) { 898 lpfc_check_inactive_vmid(phba); 899 phba->pport->work_port_events &= 900 ~WORKER_CHECK_INACTIVE_VMID; 901 } 902 } 903 904 /* Process SLI4 events */ 905 if (phba->pci_dev_grp == LPFC_PCI_DEV_OC) { 906 if (phba->hba_flag & HBA_RRQ_ACTIVE) 907 lpfc_handle_rrq_active(phba); 908 if (phba->hba_flag & ELS_XRI_ABORT_EVENT) 909 lpfc_sli4_els_xri_abort_event_proc(phba); 910 if (phba->hba_flag & ASYNC_EVENT) 911 lpfc_sli4_async_event_proc(phba); 912 if (phba->hba_flag & HBA_POST_RECEIVE_BUFFER) { 913 spin_lock_irq(&phba->hbalock); 914 phba->hba_flag &= ~HBA_POST_RECEIVE_BUFFER; 915 spin_unlock_irq(&phba->hbalock); 916 lpfc_sli_hbqbuf_add_hbqs(phba, LPFC_ELS_HBQ); 917 } 918 if (phba->fcf.fcf_flag & FCF_REDISC_EVT) 919 lpfc_sli4_fcf_redisc_event_proc(phba); 920 } 921 922 vports = lpfc_create_vport_work_array(phba); 923 if (vports != NULL) 924 for (i = 0; i <= phba->max_vports; i++) { 925 /* 926 * We could have no vports in array if unloading, so if 927 * this happens then just use the pport 928 */ 929 if (vports[i] == NULL && i == 0) 930 vport = phba->pport; 931 else 932 vport = vports[i]; 933 if (vport == NULL) 934 break; 935 spin_lock_irq(&vport->work_port_lock); 936 work_port_events = vport->work_port_events; 937 vport->work_port_events &= ~work_port_events; 938 spin_unlock_irq(&vport->work_port_lock); 939 if (work_port_events & WORKER_DISC_TMO) 940 lpfc_disc_timeout_handler(vport); 941 if (work_port_events & WORKER_ELS_TMO) 942 lpfc_els_timeout_handler(vport); 943 if (work_port_events & WORKER_HB_TMO) 944 lpfc_hb_timeout_handler(phba); 945 if (work_port_events & WORKER_MBOX_TMO) 946 lpfc_mbox_timeout_handler(phba); 947 if (work_port_events & WORKER_FABRIC_BLOCK_TMO) 948 lpfc_unblock_fabric_iocbs(phba); 949 if (work_port_events & WORKER_RAMP_DOWN_QUEUE) 950 lpfc_ramp_down_queue_handler(phba); 951 if (work_port_events & WORKER_DELAYED_DISC_TMO) 952 lpfc_delayed_disc_timeout_handler(vport); 953 } 954 lpfc_destroy_vport_work_array(phba, vports); 955 956 pring = lpfc_phba_elsring(phba); 957 status = (ha_copy & (HA_RXMASK << (4*LPFC_ELS_RING))); 958 status >>= (4*LPFC_ELS_RING); 959 if (pring && (status & HA_RXMASK || 960 pring->flag & LPFC_DEFERRED_RING_EVENT || 961 phba->hba_flag & HBA_SP_QUEUE_EVT)) { 962 if (pring->flag & LPFC_STOP_IOCB_EVENT) { 963 pring->flag |= LPFC_DEFERRED_RING_EVENT; 964 /* Preserve legacy behavior. */ 965 if (!(phba->hba_flag & HBA_SP_QUEUE_EVT)) 966 set_bit(LPFC_DATA_READY, &phba->data_flags); 967 } else { 968 /* Driver could have abort request completed in queue 969 * when link goes down. Allow for this transition. 970 */ 971 if (phba->link_state >= LPFC_LINK_DOWN || 972 phba->link_flag & LS_MDS_LOOPBACK) { 973 pring->flag &= ~LPFC_DEFERRED_RING_EVENT; 974 lpfc_sli_handle_slow_ring_event(phba, pring, 975 (status & 976 HA_RXMASK)); 977 } 978 } 979 if (phba->sli_rev == LPFC_SLI_REV4) 980 lpfc_drain_txq(phba); 981 /* 982 * Turn on Ring interrupts 983 */ 984 if (phba->sli_rev <= LPFC_SLI_REV3) { 985 spin_lock_irq(&phba->hbalock); 986 control = readl(phba->HCregaddr); 987 if (!(control & (HC_R0INT_ENA << LPFC_ELS_RING))) { 988 lpfc_debugfs_slow_ring_trc(phba, 989 "WRK Enable ring: cntl:x%x hacopy:x%x", 990 control, ha_copy, 0); 991 992 control |= (HC_R0INT_ENA << LPFC_ELS_RING); 993 writel(control, phba->HCregaddr); 994 readl(phba->HCregaddr); /* flush */ 995 } else { 996 lpfc_debugfs_slow_ring_trc(phba, 997 "WRK Ring ok: cntl:x%x hacopy:x%x", 998 control, ha_copy, 0); 999 } 1000 spin_unlock_irq(&phba->hbalock); 1001 } 1002 } 1003 lpfc_work_list_done(phba); 1004 } 1005 1006 int 1007 lpfc_do_work(void *p) 1008 { 1009 struct lpfc_hba *phba = p; 1010 int rc; 1011 1012 set_user_nice(current, MIN_NICE); 1013 current->flags |= PF_NOFREEZE; 1014 phba->data_flags = 0; 1015 1016 while (!kthread_should_stop()) { 1017 /* wait and check worker queue activities */ 1018 rc = wait_event_interruptible(phba->work_waitq, 1019 (test_and_clear_bit(LPFC_DATA_READY, 1020 &phba->data_flags) 1021 || kthread_should_stop())); 1022 /* Signal wakeup shall terminate the worker thread */ 1023 if (rc) { 1024 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 1025 "0433 Wakeup on signal: rc=x%x\n", rc); 1026 break; 1027 } 1028 1029 /* Attend pending lpfc data processing */ 1030 lpfc_work_done(phba); 1031 } 1032 phba->worker_thread = NULL; 1033 lpfc_printf_log(phba, KERN_INFO, LOG_ELS, 1034 "0432 Worker thread stopped.\n"); 1035 return 0; 1036 } 1037 1038 /* 1039 * This is only called to handle FC worker events. Since this a rare 1040 * occurrence, we allocate a struct lpfc_work_evt structure here instead of 1041 * embedding it in the IOCB. 1042 */ 1043 int 1044 lpfc_workq_post_event(struct lpfc_hba *phba, void *arg1, void *arg2, 1045 uint32_t evt) 1046 { 1047 struct lpfc_work_evt *evtp; 1048 unsigned long flags; 1049 1050 /* 1051 * All Mailbox completions and LPFC_ELS_RING rcv ring IOCB events will 1052 * be queued to worker thread for processing 1053 */ 1054 evtp = kmalloc(sizeof(struct lpfc_work_evt), GFP_ATOMIC); 1055 if (!evtp) 1056 return 0; 1057 1058 evtp->evt_arg1 = arg1; 1059 evtp->evt_arg2 = arg2; 1060 evtp->evt = evt; 1061 1062 spin_lock_irqsave(&phba->hbalock, flags); 1063 list_add_tail(&evtp->evt_listp, &phba->work_list); 1064 spin_unlock_irqrestore(&phba->hbalock, flags); 1065 1066 lpfc_worker_wake_up(phba); 1067 1068 return 1; 1069 } 1070 1071 void 1072 lpfc_cleanup_rpis(struct lpfc_vport *vport, int remove) 1073 { 1074 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 1075 struct lpfc_hba *phba = vport->phba; 1076 struct lpfc_nodelist *ndlp, *next_ndlp; 1077 1078 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) { 1079 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE) { 1080 /* It's possible the FLOGI to the fabric node never 1081 * successfully completed and never registered with the 1082 * transport. In this case there is no way to clean up 1083 * the node. 1084 */ 1085 if (ndlp->nlp_DID == Fabric_DID) { 1086 if (ndlp->nlp_prev_state == 1087 NLP_STE_UNUSED_NODE && 1088 !ndlp->fc4_xpt_flags) 1089 lpfc_nlp_put(ndlp); 1090 } 1091 continue; 1092 } 1093 1094 if ((phba->sli3_options & LPFC_SLI3_VPORT_TEARDOWN) || 1095 ((vport->port_type == LPFC_NPIV_PORT) && 1096 ((ndlp->nlp_DID == NameServer_DID) || 1097 (ndlp->nlp_DID == FDMI_DID) || 1098 (ndlp->nlp_DID == Fabric_Cntl_DID)))) 1099 lpfc_unreg_rpi(vport, ndlp); 1100 1101 /* Leave Fabric nodes alone on link down */ 1102 if ((phba->sli_rev < LPFC_SLI_REV4) && 1103 (!remove && ndlp->nlp_type & NLP_FABRIC)) 1104 continue; 1105 1106 /* Notify transport of connectivity loss to trigger cleanup. */ 1107 if (phba->nvmet_support && 1108 ndlp->nlp_state == NLP_STE_UNMAPPED_NODE) 1109 lpfc_nvmet_invalidate_host(phba, ndlp); 1110 1111 lpfc_disc_state_machine(vport, ndlp, NULL, 1112 remove 1113 ? NLP_EVT_DEVICE_RM 1114 : NLP_EVT_DEVICE_RECOVERY); 1115 } 1116 if (phba->sli3_options & LPFC_SLI3_VPORT_TEARDOWN) { 1117 if (phba->sli_rev == LPFC_SLI_REV4) 1118 lpfc_sli4_unreg_all_rpis(vport); 1119 lpfc_mbx_unreg_vpi(vport); 1120 spin_lock_irq(shost->host_lock); 1121 vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI; 1122 spin_unlock_irq(shost->host_lock); 1123 } 1124 } 1125 1126 void 1127 lpfc_port_link_failure(struct lpfc_vport *vport) 1128 { 1129 lpfc_vport_set_state(vport, FC_VPORT_LINKDOWN); 1130 1131 /* Cleanup any outstanding received buffers */ 1132 lpfc_cleanup_rcv_buffers(vport); 1133 1134 /* Cleanup any outstanding RSCN activity */ 1135 lpfc_els_flush_rscn(vport); 1136 1137 /* Cleanup any outstanding ELS commands */ 1138 lpfc_els_flush_cmd(vport); 1139 1140 lpfc_cleanup_rpis(vport, 0); 1141 1142 /* Turn off discovery timer if its running */ 1143 lpfc_can_disctmo(vport); 1144 } 1145 1146 void 1147 lpfc_linkdown_port(struct lpfc_vport *vport) 1148 { 1149 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 1150 1151 if (vport->cfg_enable_fc4_type != LPFC_ENABLE_NVME) 1152 fc_host_post_event(shost, fc_get_event_number(), 1153 FCH_EVT_LINKDOWN, 0); 1154 1155 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, 1156 "Link Down: state:x%x rtry:x%x flg:x%x", 1157 vport->port_state, vport->fc_ns_retry, vport->fc_flag); 1158 1159 lpfc_port_link_failure(vport); 1160 1161 /* Stop delayed Nport discovery */ 1162 spin_lock_irq(shost->host_lock); 1163 vport->fc_flag &= ~FC_DISC_DELAYED; 1164 spin_unlock_irq(shost->host_lock); 1165 del_timer_sync(&vport->delayed_disc_tmo); 1166 } 1167 1168 int 1169 lpfc_linkdown(struct lpfc_hba *phba) 1170 { 1171 struct lpfc_vport *vport = phba->pport; 1172 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 1173 struct lpfc_vport **vports; 1174 LPFC_MBOXQ_t *mb; 1175 int i; 1176 1177 if (phba->link_state == LPFC_LINK_DOWN) 1178 return 0; 1179 1180 /* Block all SCSI stack I/Os */ 1181 lpfc_scsi_dev_block(phba); 1182 1183 phba->defer_flogi_acc_flag = false; 1184 1185 spin_lock_irq(&phba->hbalock); 1186 phba->fcf.fcf_flag &= ~(FCF_AVAILABLE | FCF_SCAN_DONE); 1187 spin_unlock_irq(&phba->hbalock); 1188 if (phba->link_state > LPFC_LINK_DOWN) { 1189 phba->link_state = LPFC_LINK_DOWN; 1190 if (phba->sli4_hba.conf_trunk) { 1191 phba->trunk_link.link0.state = 0; 1192 phba->trunk_link.link1.state = 0; 1193 phba->trunk_link.link2.state = 0; 1194 phba->trunk_link.link3.state = 0; 1195 phba->sli4_hba.link_state.logical_speed = 1196 LPFC_LINK_SPEED_UNKNOWN; 1197 } 1198 spin_lock_irq(shost->host_lock); 1199 phba->pport->fc_flag &= ~FC_LBIT; 1200 spin_unlock_irq(shost->host_lock); 1201 } 1202 vports = lpfc_create_vport_work_array(phba); 1203 if (vports != NULL) { 1204 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) { 1205 /* Issue a LINK DOWN event to all nodes */ 1206 lpfc_linkdown_port(vports[i]); 1207 1208 vports[i]->fc_myDID = 0; 1209 1210 if ((vport->cfg_enable_fc4_type == LPFC_ENABLE_BOTH) || 1211 (vport->cfg_enable_fc4_type == LPFC_ENABLE_NVME)) { 1212 if (phba->nvmet_support) 1213 lpfc_nvmet_update_targetport(phba); 1214 else 1215 lpfc_nvme_update_localport(vports[i]); 1216 } 1217 } 1218 } 1219 lpfc_destroy_vport_work_array(phba, vports); 1220 1221 /* Clean up any SLI3 firmware default rpi's */ 1222 if (phba->sli_rev > LPFC_SLI_REV3) 1223 goto skip_unreg_did; 1224 1225 mb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 1226 if (mb) { 1227 lpfc_unreg_did(phba, 0xffff, LPFC_UNREG_ALL_DFLT_RPIS, mb); 1228 mb->vport = vport; 1229 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl; 1230 if (lpfc_sli_issue_mbox(phba, mb, MBX_NOWAIT) 1231 == MBX_NOT_FINISHED) { 1232 mempool_free(mb, phba->mbox_mem_pool); 1233 } 1234 } 1235 1236 skip_unreg_did: 1237 /* Setup myDID for link up if we are in pt2pt mode */ 1238 if (phba->pport->fc_flag & FC_PT2PT) { 1239 mb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 1240 if (mb) { 1241 lpfc_config_link(phba, mb); 1242 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl; 1243 mb->vport = vport; 1244 if (lpfc_sli_issue_mbox(phba, mb, MBX_NOWAIT) 1245 == MBX_NOT_FINISHED) { 1246 mempool_free(mb, phba->mbox_mem_pool); 1247 } 1248 } 1249 spin_lock_irq(shost->host_lock); 1250 phba->pport->fc_flag &= ~(FC_PT2PT | FC_PT2PT_PLOGI); 1251 phba->pport->rcv_flogi_cnt = 0; 1252 spin_unlock_irq(shost->host_lock); 1253 } 1254 return 0; 1255 } 1256 1257 static void 1258 lpfc_linkup_cleanup_nodes(struct lpfc_vport *vport) 1259 { 1260 struct lpfc_nodelist *ndlp; 1261 1262 list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) { 1263 ndlp->nlp_fc4_type &= ~(NLP_FC4_FCP | NLP_FC4_NVME); 1264 1265 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE) 1266 continue; 1267 if (ndlp->nlp_type & NLP_FABRIC) { 1268 /* On Linkup its safe to clean up the ndlp 1269 * from Fabric connections. 1270 */ 1271 if (ndlp->nlp_DID != Fabric_DID) 1272 lpfc_unreg_rpi(vport, ndlp); 1273 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE); 1274 } else if (!(ndlp->nlp_flag & NLP_NPR_ADISC)) { 1275 /* Fail outstanding IO now since device is 1276 * marked for PLOGI. 1277 */ 1278 lpfc_unreg_rpi(vport, ndlp); 1279 } 1280 } 1281 } 1282 1283 static void 1284 lpfc_linkup_port(struct lpfc_vport *vport) 1285 { 1286 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 1287 struct lpfc_hba *phba = vport->phba; 1288 1289 if ((vport->load_flag & FC_UNLOADING) != 0) 1290 return; 1291 1292 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, 1293 "Link Up: top:x%x speed:x%x flg:x%x", 1294 phba->fc_topology, phba->fc_linkspeed, phba->link_flag); 1295 1296 /* If NPIV is not enabled, only bring the physical port up */ 1297 if (!(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) && 1298 (vport != phba->pport)) 1299 return; 1300 1301 if (vport->cfg_enable_fc4_type != LPFC_ENABLE_NVME) 1302 fc_host_post_event(shost, fc_get_event_number(), 1303 FCH_EVT_LINKUP, 0); 1304 1305 spin_lock_irq(shost->host_lock); 1306 vport->fc_flag &= ~(FC_PT2PT | FC_PT2PT_PLOGI | FC_ABORT_DISCOVERY | 1307 FC_RSCN_MODE | FC_NLP_MORE | FC_RSCN_DISCOVERY); 1308 vport->fc_flag |= FC_NDISC_ACTIVE; 1309 vport->fc_ns_retry = 0; 1310 spin_unlock_irq(shost->host_lock); 1311 1312 lpfc_linkup_cleanup_nodes(vport); 1313 } 1314 1315 static int 1316 lpfc_linkup(struct lpfc_hba *phba) 1317 { 1318 struct lpfc_vport **vports; 1319 int i; 1320 struct Scsi_Host *shost = lpfc_shost_from_vport(phba->pport); 1321 1322 phba->link_state = LPFC_LINK_UP; 1323 1324 /* Unblock fabric iocbs if they are blocked */ 1325 clear_bit(FABRIC_COMANDS_BLOCKED, &phba->bit_flags); 1326 del_timer_sync(&phba->fabric_block_timer); 1327 1328 vports = lpfc_create_vport_work_array(phba); 1329 if (vports != NULL) 1330 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) 1331 lpfc_linkup_port(vports[i]); 1332 lpfc_destroy_vport_work_array(phba, vports); 1333 1334 /* Clear the pport flogi counter in case the link down was 1335 * absorbed without an ACQE. No lock here - in worker thread 1336 * and discovery is synchronized. 1337 */ 1338 spin_lock_irq(shost->host_lock); 1339 phba->pport->rcv_flogi_cnt = 0; 1340 spin_unlock_irq(shost->host_lock); 1341 1342 /* reinitialize initial FLOGI flag */ 1343 phba->hba_flag &= ~(HBA_FLOGI_ISSUED); 1344 phba->defer_flogi_acc_flag = false; 1345 1346 return 0; 1347 } 1348 1349 /* 1350 * This routine handles processing a CLEAR_LA mailbox 1351 * command upon completion. It is setup in the LPFC_MBOXQ 1352 * as the completion routine when the command is 1353 * handed off to the SLI layer. SLI3 only. 1354 */ 1355 static void 1356 lpfc_mbx_cmpl_clear_la(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 1357 { 1358 struct lpfc_vport *vport = pmb->vport; 1359 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 1360 struct lpfc_sli *psli = &phba->sli; 1361 MAILBOX_t *mb = &pmb->u.mb; 1362 uint32_t control; 1363 1364 /* Since we don't do discovery right now, turn these off here */ 1365 psli->sli3_ring[LPFC_EXTRA_RING].flag &= ~LPFC_STOP_IOCB_EVENT; 1366 psli->sli3_ring[LPFC_FCP_RING].flag &= ~LPFC_STOP_IOCB_EVENT; 1367 1368 /* Check for error */ 1369 if ((mb->mbxStatus) && (mb->mbxStatus != 0x1601)) { 1370 /* CLEAR_LA mbox error <mbxStatus> state <hba_state> */ 1371 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 1372 "0320 CLEAR_LA mbxStatus error x%x hba " 1373 "state x%x\n", 1374 mb->mbxStatus, vport->port_state); 1375 phba->link_state = LPFC_HBA_ERROR; 1376 goto out; 1377 } 1378 1379 if (vport->port_type == LPFC_PHYSICAL_PORT) 1380 phba->link_state = LPFC_HBA_READY; 1381 1382 spin_lock_irq(&phba->hbalock); 1383 psli->sli_flag |= LPFC_PROCESS_LA; 1384 control = readl(phba->HCregaddr); 1385 control |= HC_LAINT_ENA; 1386 writel(control, phba->HCregaddr); 1387 readl(phba->HCregaddr); /* flush */ 1388 spin_unlock_irq(&phba->hbalock); 1389 mempool_free(pmb, phba->mbox_mem_pool); 1390 return; 1391 1392 out: 1393 /* Device Discovery completes */ 1394 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, 1395 "0225 Device Discovery completes\n"); 1396 mempool_free(pmb, phba->mbox_mem_pool); 1397 1398 spin_lock_irq(shost->host_lock); 1399 vport->fc_flag &= ~FC_ABORT_DISCOVERY; 1400 spin_unlock_irq(shost->host_lock); 1401 1402 lpfc_can_disctmo(vport); 1403 1404 /* turn on Link Attention interrupts */ 1405 1406 spin_lock_irq(&phba->hbalock); 1407 psli->sli_flag |= LPFC_PROCESS_LA; 1408 control = readl(phba->HCregaddr); 1409 control |= HC_LAINT_ENA; 1410 writel(control, phba->HCregaddr); 1411 readl(phba->HCregaddr); /* flush */ 1412 spin_unlock_irq(&phba->hbalock); 1413 1414 return; 1415 } 1416 1417 void 1418 lpfc_mbx_cmpl_local_config_link(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 1419 { 1420 struct lpfc_vport *vport = pmb->vport; 1421 LPFC_MBOXQ_t *sparam_mb; 1422 struct lpfc_dmabuf *sparam_mp; 1423 u16 status = pmb->u.mb.mbxStatus; 1424 int rc; 1425 1426 mempool_free(pmb, phba->mbox_mem_pool); 1427 1428 if (status) 1429 goto out; 1430 1431 /* don't perform discovery for SLI4 loopback diagnostic test */ 1432 if ((phba->sli_rev == LPFC_SLI_REV4) && 1433 !(phba->hba_flag & HBA_FCOE_MODE) && 1434 (phba->link_flag & LS_LOOPBACK_MODE)) 1435 return; 1436 1437 if (phba->fc_topology == LPFC_TOPOLOGY_LOOP && 1438 vport->fc_flag & FC_PUBLIC_LOOP && 1439 !(vport->fc_flag & FC_LBIT)) { 1440 /* Need to wait for FAN - use discovery timer 1441 * for timeout. port_state is identically 1442 * LPFC_LOCAL_CFG_LINK while waiting for FAN 1443 */ 1444 lpfc_set_disctmo(vport); 1445 return; 1446 } 1447 1448 /* Start discovery by sending a FLOGI. port_state is identically 1449 * LPFC_FLOGI while waiting for FLOGI cmpl. 1450 */ 1451 if (vport->port_state != LPFC_FLOGI) { 1452 /* Issue MBX_READ_SPARAM to update CSPs before FLOGI if 1453 * bb-credit recovery is in place. 1454 */ 1455 if (phba->bbcredit_support && phba->cfg_enable_bbcr && 1456 !(phba->link_flag & LS_LOOPBACK_MODE)) { 1457 sparam_mb = mempool_alloc(phba->mbox_mem_pool, 1458 GFP_KERNEL); 1459 if (!sparam_mb) 1460 goto sparam_out; 1461 1462 rc = lpfc_read_sparam(phba, sparam_mb, 0); 1463 if (rc) { 1464 mempool_free(sparam_mb, phba->mbox_mem_pool); 1465 goto sparam_out; 1466 } 1467 sparam_mb->vport = vport; 1468 sparam_mb->mbox_cmpl = lpfc_mbx_cmpl_read_sparam; 1469 rc = lpfc_sli_issue_mbox(phba, sparam_mb, MBX_NOWAIT); 1470 if (rc == MBX_NOT_FINISHED) { 1471 sparam_mp = (struct lpfc_dmabuf *) 1472 sparam_mb->ctx_buf; 1473 lpfc_mbuf_free(phba, sparam_mp->virt, 1474 sparam_mp->phys); 1475 kfree(sparam_mp); 1476 sparam_mb->ctx_buf = NULL; 1477 mempool_free(sparam_mb, phba->mbox_mem_pool); 1478 goto sparam_out; 1479 } 1480 1481 phba->hba_flag |= HBA_DEFER_FLOGI; 1482 } else { 1483 lpfc_initial_flogi(vport); 1484 } 1485 } else { 1486 if (vport->fc_flag & FC_PT2PT) 1487 lpfc_disc_start(vport); 1488 } 1489 return; 1490 1491 out: 1492 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 1493 "0306 CONFIG_LINK mbxStatus error x%x HBA state x%x\n", 1494 status, vport->port_state); 1495 1496 sparam_out: 1497 lpfc_linkdown(phba); 1498 1499 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 1500 "0200 CONFIG_LINK bad hba state x%x\n", 1501 vport->port_state); 1502 1503 lpfc_issue_clear_la(phba, vport); 1504 return; 1505 } 1506 1507 /** 1508 * lpfc_sli4_clear_fcf_rr_bmask 1509 * @phba: pointer to the struct lpfc_hba for this port. 1510 * This fucnction resets the round robin bit mask and clears the 1511 * fcf priority list. The list deletions are done while holding the 1512 * hbalock. The ON_LIST flag and the FLOGI_FAILED flags are cleared 1513 * from the lpfc_fcf_pri record. 1514 **/ 1515 void 1516 lpfc_sli4_clear_fcf_rr_bmask(struct lpfc_hba *phba) 1517 { 1518 struct lpfc_fcf_pri *fcf_pri; 1519 struct lpfc_fcf_pri *next_fcf_pri; 1520 memset(phba->fcf.fcf_rr_bmask, 0, sizeof(*phba->fcf.fcf_rr_bmask)); 1521 spin_lock_irq(&phba->hbalock); 1522 list_for_each_entry_safe(fcf_pri, next_fcf_pri, 1523 &phba->fcf.fcf_pri_list, list) { 1524 list_del_init(&fcf_pri->list); 1525 fcf_pri->fcf_rec.flag = 0; 1526 } 1527 spin_unlock_irq(&phba->hbalock); 1528 } 1529 static void 1530 lpfc_mbx_cmpl_reg_fcfi(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq) 1531 { 1532 struct lpfc_vport *vport = mboxq->vport; 1533 1534 if (mboxq->u.mb.mbxStatus) { 1535 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 1536 "2017 REG_FCFI mbxStatus error x%x " 1537 "HBA state x%x\n", mboxq->u.mb.mbxStatus, 1538 vport->port_state); 1539 goto fail_out; 1540 } 1541 1542 /* Start FCoE discovery by sending a FLOGI. */ 1543 phba->fcf.fcfi = bf_get(lpfc_reg_fcfi_fcfi, &mboxq->u.mqe.un.reg_fcfi); 1544 /* Set the FCFI registered flag */ 1545 spin_lock_irq(&phba->hbalock); 1546 phba->fcf.fcf_flag |= FCF_REGISTERED; 1547 spin_unlock_irq(&phba->hbalock); 1548 1549 /* If there is a pending FCoE event, restart FCF table scan. */ 1550 if ((!(phba->hba_flag & FCF_RR_INPROG)) && 1551 lpfc_check_pending_fcoe_event(phba, LPFC_UNREG_FCF)) 1552 goto fail_out; 1553 1554 /* Mark successful completion of FCF table scan */ 1555 spin_lock_irq(&phba->hbalock); 1556 phba->fcf.fcf_flag |= (FCF_SCAN_DONE | FCF_IN_USE); 1557 phba->hba_flag &= ~FCF_TS_INPROG; 1558 if (vport->port_state != LPFC_FLOGI) { 1559 phba->hba_flag |= FCF_RR_INPROG; 1560 spin_unlock_irq(&phba->hbalock); 1561 lpfc_issue_init_vfi(vport); 1562 goto out; 1563 } 1564 spin_unlock_irq(&phba->hbalock); 1565 goto out; 1566 1567 fail_out: 1568 spin_lock_irq(&phba->hbalock); 1569 phba->hba_flag &= ~FCF_RR_INPROG; 1570 spin_unlock_irq(&phba->hbalock); 1571 out: 1572 mempool_free(mboxq, phba->mbox_mem_pool); 1573 } 1574 1575 /** 1576 * lpfc_fab_name_match - Check if the fcf fabric name match. 1577 * @fab_name: pointer to fabric name. 1578 * @new_fcf_record: pointer to fcf record. 1579 * 1580 * This routine compare the fcf record's fabric name with provided 1581 * fabric name. If the fabric name are identical this function 1582 * returns 1 else return 0. 1583 **/ 1584 static uint32_t 1585 lpfc_fab_name_match(uint8_t *fab_name, struct fcf_record *new_fcf_record) 1586 { 1587 if (fab_name[0] != bf_get(lpfc_fcf_record_fab_name_0, new_fcf_record)) 1588 return 0; 1589 if (fab_name[1] != bf_get(lpfc_fcf_record_fab_name_1, new_fcf_record)) 1590 return 0; 1591 if (fab_name[2] != bf_get(lpfc_fcf_record_fab_name_2, new_fcf_record)) 1592 return 0; 1593 if (fab_name[3] != bf_get(lpfc_fcf_record_fab_name_3, new_fcf_record)) 1594 return 0; 1595 if (fab_name[4] != bf_get(lpfc_fcf_record_fab_name_4, new_fcf_record)) 1596 return 0; 1597 if (fab_name[5] != bf_get(lpfc_fcf_record_fab_name_5, new_fcf_record)) 1598 return 0; 1599 if (fab_name[6] != bf_get(lpfc_fcf_record_fab_name_6, new_fcf_record)) 1600 return 0; 1601 if (fab_name[7] != bf_get(lpfc_fcf_record_fab_name_7, new_fcf_record)) 1602 return 0; 1603 return 1; 1604 } 1605 1606 /** 1607 * lpfc_sw_name_match - Check if the fcf switch name match. 1608 * @sw_name: pointer to switch name. 1609 * @new_fcf_record: pointer to fcf record. 1610 * 1611 * This routine compare the fcf record's switch name with provided 1612 * switch name. If the switch name are identical this function 1613 * returns 1 else return 0. 1614 **/ 1615 static uint32_t 1616 lpfc_sw_name_match(uint8_t *sw_name, struct fcf_record *new_fcf_record) 1617 { 1618 if (sw_name[0] != bf_get(lpfc_fcf_record_switch_name_0, new_fcf_record)) 1619 return 0; 1620 if (sw_name[1] != bf_get(lpfc_fcf_record_switch_name_1, new_fcf_record)) 1621 return 0; 1622 if (sw_name[2] != bf_get(lpfc_fcf_record_switch_name_2, new_fcf_record)) 1623 return 0; 1624 if (sw_name[3] != bf_get(lpfc_fcf_record_switch_name_3, new_fcf_record)) 1625 return 0; 1626 if (sw_name[4] != bf_get(lpfc_fcf_record_switch_name_4, new_fcf_record)) 1627 return 0; 1628 if (sw_name[5] != bf_get(lpfc_fcf_record_switch_name_5, new_fcf_record)) 1629 return 0; 1630 if (sw_name[6] != bf_get(lpfc_fcf_record_switch_name_6, new_fcf_record)) 1631 return 0; 1632 if (sw_name[7] != bf_get(lpfc_fcf_record_switch_name_7, new_fcf_record)) 1633 return 0; 1634 return 1; 1635 } 1636 1637 /** 1638 * lpfc_mac_addr_match - Check if the fcf mac address match. 1639 * @mac_addr: pointer to mac address. 1640 * @new_fcf_record: pointer to fcf record. 1641 * 1642 * This routine compare the fcf record's mac address with HBA's 1643 * FCF mac address. If the mac addresses are identical this function 1644 * returns 1 else return 0. 1645 **/ 1646 static uint32_t 1647 lpfc_mac_addr_match(uint8_t *mac_addr, struct fcf_record *new_fcf_record) 1648 { 1649 if (mac_addr[0] != bf_get(lpfc_fcf_record_mac_0, new_fcf_record)) 1650 return 0; 1651 if (mac_addr[1] != bf_get(lpfc_fcf_record_mac_1, new_fcf_record)) 1652 return 0; 1653 if (mac_addr[2] != bf_get(lpfc_fcf_record_mac_2, new_fcf_record)) 1654 return 0; 1655 if (mac_addr[3] != bf_get(lpfc_fcf_record_mac_3, new_fcf_record)) 1656 return 0; 1657 if (mac_addr[4] != bf_get(lpfc_fcf_record_mac_4, new_fcf_record)) 1658 return 0; 1659 if (mac_addr[5] != bf_get(lpfc_fcf_record_mac_5, new_fcf_record)) 1660 return 0; 1661 return 1; 1662 } 1663 1664 static bool 1665 lpfc_vlan_id_match(uint16_t curr_vlan_id, uint16_t new_vlan_id) 1666 { 1667 return (curr_vlan_id == new_vlan_id); 1668 } 1669 1670 /** 1671 * __lpfc_update_fcf_record_pri - update the lpfc_fcf_pri record. 1672 * @phba: pointer to lpfc hba data structure. 1673 * @fcf_index: Index for the lpfc_fcf_record. 1674 * @new_fcf_record: pointer to hba fcf record. 1675 * 1676 * This routine updates the driver FCF priority record from the new HBA FCF 1677 * record. The hbalock is asserted held in the code path calling this 1678 * routine. 1679 **/ 1680 static void 1681 __lpfc_update_fcf_record_pri(struct lpfc_hba *phba, uint16_t fcf_index, 1682 struct fcf_record *new_fcf_record 1683 ) 1684 { 1685 struct lpfc_fcf_pri *fcf_pri; 1686 1687 fcf_pri = &phba->fcf.fcf_pri[fcf_index]; 1688 fcf_pri->fcf_rec.fcf_index = fcf_index; 1689 /* FCF record priority */ 1690 fcf_pri->fcf_rec.priority = new_fcf_record->fip_priority; 1691 1692 } 1693 1694 /** 1695 * lpfc_copy_fcf_record - Copy fcf information to lpfc_hba. 1696 * @fcf_rec: pointer to driver fcf record. 1697 * @new_fcf_record: pointer to fcf record. 1698 * 1699 * This routine copies the FCF information from the FCF 1700 * record to lpfc_hba data structure. 1701 **/ 1702 static void 1703 lpfc_copy_fcf_record(struct lpfc_fcf_rec *fcf_rec, 1704 struct fcf_record *new_fcf_record) 1705 { 1706 /* Fabric name */ 1707 fcf_rec->fabric_name[0] = 1708 bf_get(lpfc_fcf_record_fab_name_0, new_fcf_record); 1709 fcf_rec->fabric_name[1] = 1710 bf_get(lpfc_fcf_record_fab_name_1, new_fcf_record); 1711 fcf_rec->fabric_name[2] = 1712 bf_get(lpfc_fcf_record_fab_name_2, new_fcf_record); 1713 fcf_rec->fabric_name[3] = 1714 bf_get(lpfc_fcf_record_fab_name_3, new_fcf_record); 1715 fcf_rec->fabric_name[4] = 1716 bf_get(lpfc_fcf_record_fab_name_4, new_fcf_record); 1717 fcf_rec->fabric_name[5] = 1718 bf_get(lpfc_fcf_record_fab_name_5, new_fcf_record); 1719 fcf_rec->fabric_name[6] = 1720 bf_get(lpfc_fcf_record_fab_name_6, new_fcf_record); 1721 fcf_rec->fabric_name[7] = 1722 bf_get(lpfc_fcf_record_fab_name_7, new_fcf_record); 1723 /* Mac address */ 1724 fcf_rec->mac_addr[0] = bf_get(lpfc_fcf_record_mac_0, new_fcf_record); 1725 fcf_rec->mac_addr[1] = bf_get(lpfc_fcf_record_mac_1, new_fcf_record); 1726 fcf_rec->mac_addr[2] = bf_get(lpfc_fcf_record_mac_2, new_fcf_record); 1727 fcf_rec->mac_addr[3] = bf_get(lpfc_fcf_record_mac_3, new_fcf_record); 1728 fcf_rec->mac_addr[4] = bf_get(lpfc_fcf_record_mac_4, new_fcf_record); 1729 fcf_rec->mac_addr[5] = bf_get(lpfc_fcf_record_mac_5, new_fcf_record); 1730 /* FCF record index */ 1731 fcf_rec->fcf_indx = bf_get(lpfc_fcf_record_fcf_index, new_fcf_record); 1732 /* FCF record priority */ 1733 fcf_rec->priority = new_fcf_record->fip_priority; 1734 /* Switch name */ 1735 fcf_rec->switch_name[0] = 1736 bf_get(lpfc_fcf_record_switch_name_0, new_fcf_record); 1737 fcf_rec->switch_name[1] = 1738 bf_get(lpfc_fcf_record_switch_name_1, new_fcf_record); 1739 fcf_rec->switch_name[2] = 1740 bf_get(lpfc_fcf_record_switch_name_2, new_fcf_record); 1741 fcf_rec->switch_name[3] = 1742 bf_get(lpfc_fcf_record_switch_name_3, new_fcf_record); 1743 fcf_rec->switch_name[4] = 1744 bf_get(lpfc_fcf_record_switch_name_4, new_fcf_record); 1745 fcf_rec->switch_name[5] = 1746 bf_get(lpfc_fcf_record_switch_name_5, new_fcf_record); 1747 fcf_rec->switch_name[6] = 1748 bf_get(lpfc_fcf_record_switch_name_6, new_fcf_record); 1749 fcf_rec->switch_name[7] = 1750 bf_get(lpfc_fcf_record_switch_name_7, new_fcf_record); 1751 } 1752 1753 /** 1754 * __lpfc_update_fcf_record - Update driver fcf record 1755 * @phba: pointer to lpfc hba data structure. 1756 * @fcf_rec: pointer to driver fcf record. 1757 * @new_fcf_record: pointer to hba fcf record. 1758 * @addr_mode: address mode to be set to the driver fcf record. 1759 * @vlan_id: vlan tag to be set to the driver fcf record. 1760 * @flag: flag bits to be set to the driver fcf record. 1761 * 1762 * This routine updates the driver FCF record from the new HBA FCF record 1763 * together with the address mode, vlan_id, and other informations. This 1764 * routine is called with the hbalock held. 1765 **/ 1766 static void 1767 __lpfc_update_fcf_record(struct lpfc_hba *phba, struct lpfc_fcf_rec *fcf_rec, 1768 struct fcf_record *new_fcf_record, uint32_t addr_mode, 1769 uint16_t vlan_id, uint32_t flag) 1770 { 1771 lockdep_assert_held(&phba->hbalock); 1772 1773 /* Copy the fields from the HBA's FCF record */ 1774 lpfc_copy_fcf_record(fcf_rec, new_fcf_record); 1775 /* Update other fields of driver FCF record */ 1776 fcf_rec->addr_mode = addr_mode; 1777 fcf_rec->vlan_id = vlan_id; 1778 fcf_rec->flag |= (flag | RECORD_VALID); 1779 __lpfc_update_fcf_record_pri(phba, 1780 bf_get(lpfc_fcf_record_fcf_index, new_fcf_record), 1781 new_fcf_record); 1782 } 1783 1784 /** 1785 * lpfc_register_fcf - Register the FCF with hba. 1786 * @phba: pointer to lpfc hba data structure. 1787 * 1788 * This routine issues a register fcfi mailbox command to register 1789 * the fcf with HBA. 1790 **/ 1791 static void 1792 lpfc_register_fcf(struct lpfc_hba *phba) 1793 { 1794 LPFC_MBOXQ_t *fcf_mbxq; 1795 int rc; 1796 1797 spin_lock_irq(&phba->hbalock); 1798 /* If the FCF is not available do nothing. */ 1799 if (!(phba->fcf.fcf_flag & FCF_AVAILABLE)) { 1800 phba->hba_flag &= ~(FCF_TS_INPROG | FCF_RR_INPROG); 1801 spin_unlock_irq(&phba->hbalock); 1802 return; 1803 } 1804 1805 /* The FCF is already registered, start discovery */ 1806 if (phba->fcf.fcf_flag & FCF_REGISTERED) { 1807 phba->fcf.fcf_flag |= (FCF_SCAN_DONE | FCF_IN_USE); 1808 phba->hba_flag &= ~FCF_TS_INPROG; 1809 if (phba->pport->port_state != LPFC_FLOGI && 1810 phba->pport->fc_flag & FC_FABRIC) { 1811 phba->hba_flag |= FCF_RR_INPROG; 1812 spin_unlock_irq(&phba->hbalock); 1813 lpfc_initial_flogi(phba->pport); 1814 return; 1815 } 1816 spin_unlock_irq(&phba->hbalock); 1817 return; 1818 } 1819 spin_unlock_irq(&phba->hbalock); 1820 1821 fcf_mbxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 1822 if (!fcf_mbxq) { 1823 spin_lock_irq(&phba->hbalock); 1824 phba->hba_flag &= ~(FCF_TS_INPROG | FCF_RR_INPROG); 1825 spin_unlock_irq(&phba->hbalock); 1826 return; 1827 } 1828 1829 lpfc_reg_fcfi(phba, fcf_mbxq); 1830 fcf_mbxq->vport = phba->pport; 1831 fcf_mbxq->mbox_cmpl = lpfc_mbx_cmpl_reg_fcfi; 1832 rc = lpfc_sli_issue_mbox(phba, fcf_mbxq, MBX_NOWAIT); 1833 if (rc == MBX_NOT_FINISHED) { 1834 spin_lock_irq(&phba->hbalock); 1835 phba->hba_flag &= ~(FCF_TS_INPROG | FCF_RR_INPROG); 1836 spin_unlock_irq(&phba->hbalock); 1837 mempool_free(fcf_mbxq, phba->mbox_mem_pool); 1838 } 1839 1840 return; 1841 } 1842 1843 /** 1844 * lpfc_match_fcf_conn_list - Check if the FCF record can be used for discovery. 1845 * @phba: pointer to lpfc hba data structure. 1846 * @new_fcf_record: pointer to fcf record. 1847 * @boot_flag: Indicates if this record used by boot bios. 1848 * @addr_mode: The address mode to be used by this FCF 1849 * @vlan_id: The vlan id to be used as vlan tagging by this FCF. 1850 * 1851 * This routine compare the fcf record with connect list obtained from the 1852 * config region to decide if this FCF can be used for SAN discovery. It returns 1853 * 1 if this record can be used for SAN discovery else return zero. If this FCF 1854 * record can be used for SAN discovery, the boot_flag will indicate if this FCF 1855 * is used by boot bios and addr_mode will indicate the addressing mode to be 1856 * used for this FCF when the function returns. 1857 * If the FCF record need to be used with a particular vlan id, the vlan is 1858 * set in the vlan_id on return of the function. If not VLAN tagging need to 1859 * be used with the FCF vlan_id will be set to LPFC_FCOE_NULL_VID; 1860 **/ 1861 static int 1862 lpfc_match_fcf_conn_list(struct lpfc_hba *phba, 1863 struct fcf_record *new_fcf_record, 1864 uint32_t *boot_flag, uint32_t *addr_mode, 1865 uint16_t *vlan_id) 1866 { 1867 struct lpfc_fcf_conn_entry *conn_entry; 1868 int i, j, fcf_vlan_id = 0; 1869 1870 /* Find the lowest VLAN id in the FCF record */ 1871 for (i = 0; i < 512; i++) { 1872 if (new_fcf_record->vlan_bitmap[i]) { 1873 fcf_vlan_id = i * 8; 1874 j = 0; 1875 while (!((new_fcf_record->vlan_bitmap[i] >> j) & 1)) { 1876 j++; 1877 fcf_vlan_id++; 1878 } 1879 break; 1880 } 1881 } 1882 1883 /* FCF not valid/available or solicitation in progress */ 1884 if (!bf_get(lpfc_fcf_record_fcf_avail, new_fcf_record) || 1885 !bf_get(lpfc_fcf_record_fcf_valid, new_fcf_record) || 1886 bf_get(lpfc_fcf_record_fcf_sol, new_fcf_record)) 1887 return 0; 1888 1889 if (!(phba->hba_flag & HBA_FIP_SUPPORT)) { 1890 *boot_flag = 0; 1891 *addr_mode = bf_get(lpfc_fcf_record_mac_addr_prov, 1892 new_fcf_record); 1893 if (phba->valid_vlan) 1894 *vlan_id = phba->vlan_id; 1895 else 1896 *vlan_id = LPFC_FCOE_NULL_VID; 1897 return 1; 1898 } 1899 1900 /* 1901 * If there are no FCF connection table entry, driver connect to all 1902 * FCFs. 1903 */ 1904 if (list_empty(&phba->fcf_conn_rec_list)) { 1905 *boot_flag = 0; 1906 *addr_mode = bf_get(lpfc_fcf_record_mac_addr_prov, 1907 new_fcf_record); 1908 1909 /* 1910 * When there are no FCF connect entries, use driver's default 1911 * addressing mode - FPMA. 1912 */ 1913 if (*addr_mode & LPFC_FCF_FPMA) 1914 *addr_mode = LPFC_FCF_FPMA; 1915 1916 /* If FCF record report a vlan id use that vlan id */ 1917 if (fcf_vlan_id) 1918 *vlan_id = fcf_vlan_id; 1919 else 1920 *vlan_id = LPFC_FCOE_NULL_VID; 1921 return 1; 1922 } 1923 1924 list_for_each_entry(conn_entry, 1925 &phba->fcf_conn_rec_list, list) { 1926 if (!(conn_entry->conn_rec.flags & FCFCNCT_VALID)) 1927 continue; 1928 1929 if ((conn_entry->conn_rec.flags & FCFCNCT_FBNM_VALID) && 1930 !lpfc_fab_name_match(conn_entry->conn_rec.fabric_name, 1931 new_fcf_record)) 1932 continue; 1933 if ((conn_entry->conn_rec.flags & FCFCNCT_SWNM_VALID) && 1934 !lpfc_sw_name_match(conn_entry->conn_rec.switch_name, 1935 new_fcf_record)) 1936 continue; 1937 if (conn_entry->conn_rec.flags & FCFCNCT_VLAN_VALID) { 1938 /* 1939 * If the vlan bit map does not have the bit set for the 1940 * vlan id to be used, then it is not a match. 1941 */ 1942 if (!(new_fcf_record->vlan_bitmap 1943 [conn_entry->conn_rec.vlan_tag / 8] & 1944 (1 << (conn_entry->conn_rec.vlan_tag % 8)))) 1945 continue; 1946 } 1947 1948 /* 1949 * If connection record does not support any addressing mode, 1950 * skip the FCF record. 1951 */ 1952 if (!(bf_get(lpfc_fcf_record_mac_addr_prov, new_fcf_record) 1953 & (LPFC_FCF_FPMA | LPFC_FCF_SPMA))) 1954 continue; 1955 1956 /* 1957 * Check if the connection record specifies a required 1958 * addressing mode. 1959 */ 1960 if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) && 1961 !(conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED)) { 1962 1963 /* 1964 * If SPMA required but FCF not support this continue. 1965 */ 1966 if ((conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) && 1967 !(bf_get(lpfc_fcf_record_mac_addr_prov, 1968 new_fcf_record) & LPFC_FCF_SPMA)) 1969 continue; 1970 1971 /* 1972 * If FPMA required but FCF not support this continue. 1973 */ 1974 if (!(conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) && 1975 !(bf_get(lpfc_fcf_record_mac_addr_prov, 1976 new_fcf_record) & LPFC_FCF_FPMA)) 1977 continue; 1978 } 1979 1980 /* 1981 * This fcf record matches filtering criteria. 1982 */ 1983 if (conn_entry->conn_rec.flags & FCFCNCT_BOOT) 1984 *boot_flag = 1; 1985 else 1986 *boot_flag = 0; 1987 1988 /* 1989 * If user did not specify any addressing mode, or if the 1990 * preferred addressing mode specified by user is not supported 1991 * by FCF, allow fabric to pick the addressing mode. 1992 */ 1993 *addr_mode = bf_get(lpfc_fcf_record_mac_addr_prov, 1994 new_fcf_record); 1995 /* 1996 * If the user specified a required address mode, assign that 1997 * address mode 1998 */ 1999 if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) && 2000 (!(conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED))) 2001 *addr_mode = (conn_entry->conn_rec.flags & 2002 FCFCNCT_AM_SPMA) ? 2003 LPFC_FCF_SPMA : LPFC_FCF_FPMA; 2004 /* 2005 * If the user specified a preferred address mode, use the 2006 * addr mode only if FCF support the addr_mode. 2007 */ 2008 else if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) && 2009 (conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED) && 2010 (conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) && 2011 (*addr_mode & LPFC_FCF_SPMA)) 2012 *addr_mode = LPFC_FCF_SPMA; 2013 else if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) && 2014 (conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED) && 2015 !(conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) && 2016 (*addr_mode & LPFC_FCF_FPMA)) 2017 *addr_mode = LPFC_FCF_FPMA; 2018 2019 /* If matching connect list has a vlan id, use it */ 2020 if (conn_entry->conn_rec.flags & FCFCNCT_VLAN_VALID) 2021 *vlan_id = conn_entry->conn_rec.vlan_tag; 2022 /* 2023 * If no vlan id is specified in connect list, use the vlan id 2024 * in the FCF record 2025 */ 2026 else if (fcf_vlan_id) 2027 *vlan_id = fcf_vlan_id; 2028 else 2029 *vlan_id = LPFC_FCOE_NULL_VID; 2030 2031 return 1; 2032 } 2033 2034 return 0; 2035 } 2036 2037 /** 2038 * lpfc_check_pending_fcoe_event - Check if there is pending fcoe event. 2039 * @phba: pointer to lpfc hba data structure. 2040 * @unreg_fcf: Unregister FCF if FCF table need to be re-scaned. 2041 * 2042 * This function check if there is any fcoe event pending while driver 2043 * scan FCF entries. If there is any pending event, it will restart the 2044 * FCF saning and return 1 else return 0. 2045 */ 2046 int 2047 lpfc_check_pending_fcoe_event(struct lpfc_hba *phba, uint8_t unreg_fcf) 2048 { 2049 /* 2050 * If the Link is up and no FCoE events while in the 2051 * FCF discovery, no need to restart FCF discovery. 2052 */ 2053 if ((phba->link_state >= LPFC_LINK_UP) && 2054 (phba->fcoe_eventtag == phba->fcoe_eventtag_at_fcf_scan)) 2055 return 0; 2056 2057 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2058 "2768 Pending link or FCF event during current " 2059 "handling of the previous event: link_state:x%x, " 2060 "evt_tag_at_scan:x%x, evt_tag_current:x%x\n", 2061 phba->link_state, phba->fcoe_eventtag_at_fcf_scan, 2062 phba->fcoe_eventtag); 2063 2064 spin_lock_irq(&phba->hbalock); 2065 phba->fcf.fcf_flag &= ~FCF_AVAILABLE; 2066 spin_unlock_irq(&phba->hbalock); 2067 2068 if (phba->link_state >= LPFC_LINK_UP) { 2069 lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY, 2070 "2780 Restart FCF table scan due to " 2071 "pending FCF event:evt_tag_at_scan:x%x, " 2072 "evt_tag_current:x%x\n", 2073 phba->fcoe_eventtag_at_fcf_scan, 2074 phba->fcoe_eventtag); 2075 lpfc_sli4_fcf_scan_read_fcf_rec(phba, LPFC_FCOE_FCF_GET_FIRST); 2076 } else { 2077 /* 2078 * Do not continue FCF discovery and clear FCF_TS_INPROG 2079 * flag 2080 */ 2081 lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY, 2082 "2833 Stop FCF discovery process due to link " 2083 "state change (x%x)\n", phba->link_state); 2084 spin_lock_irq(&phba->hbalock); 2085 phba->hba_flag &= ~(FCF_TS_INPROG | FCF_RR_INPROG); 2086 phba->fcf.fcf_flag &= ~(FCF_REDISC_FOV | FCF_DISCOVERY); 2087 spin_unlock_irq(&phba->hbalock); 2088 } 2089 2090 /* Unregister the currently registered FCF if required */ 2091 if (unreg_fcf) { 2092 spin_lock_irq(&phba->hbalock); 2093 phba->fcf.fcf_flag &= ~FCF_REGISTERED; 2094 spin_unlock_irq(&phba->hbalock); 2095 lpfc_sli4_unregister_fcf(phba); 2096 } 2097 return 1; 2098 } 2099 2100 /** 2101 * lpfc_sli4_new_fcf_random_select - Randomly select an eligible new fcf record 2102 * @phba: pointer to lpfc hba data structure. 2103 * @fcf_cnt: number of eligible fcf record seen so far. 2104 * 2105 * This function makes an running random selection decision on FCF record to 2106 * use through a sequence of @fcf_cnt eligible FCF records with equal 2107 * probability. To perform integer manunipulation of random numbers with 2108 * size unit32_t, the lower 16 bits of the 32-bit random number returned 2109 * from prandom_u32() are taken as the random random number generated. 2110 * 2111 * Returns true when outcome is for the newly read FCF record should be 2112 * chosen; otherwise, return false when outcome is for keeping the previously 2113 * chosen FCF record. 2114 **/ 2115 static bool 2116 lpfc_sli4_new_fcf_random_select(struct lpfc_hba *phba, uint32_t fcf_cnt) 2117 { 2118 uint32_t rand_num; 2119 2120 /* Get 16-bit uniform random number */ 2121 rand_num = 0xFFFF & prandom_u32(); 2122 2123 /* Decision with probability 1/fcf_cnt */ 2124 if ((fcf_cnt * rand_num) < 0xFFFF) 2125 return true; 2126 else 2127 return false; 2128 } 2129 2130 /** 2131 * lpfc_sli4_fcf_rec_mbox_parse - Parse read_fcf mbox command. 2132 * @phba: pointer to lpfc hba data structure. 2133 * @mboxq: pointer to mailbox object. 2134 * @next_fcf_index: pointer to holder of next fcf index. 2135 * 2136 * This routine parses the non-embedded fcf mailbox command by performing the 2137 * necessarily error checking, non-embedded read FCF record mailbox command 2138 * SGE parsing, and endianness swapping. 2139 * 2140 * Returns the pointer to the new FCF record in the non-embedded mailbox 2141 * command DMA memory if successfully, other NULL. 2142 */ 2143 static struct fcf_record * 2144 lpfc_sli4_fcf_rec_mbox_parse(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq, 2145 uint16_t *next_fcf_index) 2146 { 2147 void *virt_addr; 2148 struct lpfc_mbx_sge sge; 2149 struct lpfc_mbx_read_fcf_tbl *read_fcf; 2150 uint32_t shdr_status, shdr_add_status, if_type; 2151 union lpfc_sli4_cfg_shdr *shdr; 2152 struct fcf_record *new_fcf_record; 2153 2154 /* Get the first SGE entry from the non-embedded DMA memory. This 2155 * routine only uses a single SGE. 2156 */ 2157 lpfc_sli4_mbx_sge_get(mboxq, 0, &sge); 2158 if (unlikely(!mboxq->sge_array)) { 2159 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 2160 "2524 Failed to get the non-embedded SGE " 2161 "virtual address\n"); 2162 return NULL; 2163 } 2164 virt_addr = mboxq->sge_array->addr[0]; 2165 2166 shdr = (union lpfc_sli4_cfg_shdr *)virt_addr; 2167 lpfc_sli_pcimem_bcopy(shdr, shdr, 2168 sizeof(union lpfc_sli4_cfg_shdr)); 2169 shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response); 2170 if_type = bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf); 2171 shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response); 2172 if (shdr_status || shdr_add_status) { 2173 if (shdr_status == STATUS_FCF_TABLE_EMPTY || 2174 if_type == LPFC_SLI_INTF_IF_TYPE_2) 2175 lpfc_printf_log(phba, KERN_ERR, 2176 LOG_TRACE_EVENT, 2177 "2726 READ_FCF_RECORD Indicates empty " 2178 "FCF table.\n"); 2179 else 2180 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 2181 "2521 READ_FCF_RECORD mailbox failed " 2182 "with status x%x add_status x%x, " 2183 "mbx\n", shdr_status, shdr_add_status); 2184 return NULL; 2185 } 2186 2187 /* Interpreting the returned information of the FCF record */ 2188 read_fcf = (struct lpfc_mbx_read_fcf_tbl *)virt_addr; 2189 lpfc_sli_pcimem_bcopy(read_fcf, read_fcf, 2190 sizeof(struct lpfc_mbx_read_fcf_tbl)); 2191 *next_fcf_index = bf_get(lpfc_mbx_read_fcf_tbl_nxt_vindx, read_fcf); 2192 new_fcf_record = (struct fcf_record *)(virt_addr + 2193 sizeof(struct lpfc_mbx_read_fcf_tbl)); 2194 lpfc_sli_pcimem_bcopy(new_fcf_record, new_fcf_record, 2195 offsetof(struct fcf_record, vlan_bitmap)); 2196 new_fcf_record->word137 = le32_to_cpu(new_fcf_record->word137); 2197 new_fcf_record->word138 = le32_to_cpu(new_fcf_record->word138); 2198 2199 return new_fcf_record; 2200 } 2201 2202 /** 2203 * lpfc_sli4_log_fcf_record_info - Log the information of a fcf record 2204 * @phba: pointer to lpfc hba data structure. 2205 * @fcf_record: pointer to the fcf record. 2206 * @vlan_id: the lowest vlan identifier associated to this fcf record. 2207 * @next_fcf_index: the index to the next fcf record in hba's fcf table. 2208 * 2209 * This routine logs the detailed FCF record if the LOG_FIP loggin is 2210 * enabled. 2211 **/ 2212 static void 2213 lpfc_sli4_log_fcf_record_info(struct lpfc_hba *phba, 2214 struct fcf_record *fcf_record, 2215 uint16_t vlan_id, 2216 uint16_t next_fcf_index) 2217 { 2218 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2219 "2764 READ_FCF_RECORD:\n" 2220 "\tFCF_Index : x%x\n" 2221 "\tFCF_Avail : x%x\n" 2222 "\tFCF_Valid : x%x\n" 2223 "\tFCF_SOL : x%x\n" 2224 "\tFIP_Priority : x%x\n" 2225 "\tMAC_Provider : x%x\n" 2226 "\tLowest VLANID : x%x\n" 2227 "\tFCF_MAC Addr : x%x:%x:%x:%x:%x:%x\n" 2228 "\tFabric_Name : x%x:%x:%x:%x:%x:%x:%x:%x\n" 2229 "\tSwitch_Name : x%x:%x:%x:%x:%x:%x:%x:%x\n" 2230 "\tNext_FCF_Index: x%x\n", 2231 bf_get(lpfc_fcf_record_fcf_index, fcf_record), 2232 bf_get(lpfc_fcf_record_fcf_avail, fcf_record), 2233 bf_get(lpfc_fcf_record_fcf_valid, fcf_record), 2234 bf_get(lpfc_fcf_record_fcf_sol, fcf_record), 2235 fcf_record->fip_priority, 2236 bf_get(lpfc_fcf_record_mac_addr_prov, fcf_record), 2237 vlan_id, 2238 bf_get(lpfc_fcf_record_mac_0, fcf_record), 2239 bf_get(lpfc_fcf_record_mac_1, fcf_record), 2240 bf_get(lpfc_fcf_record_mac_2, fcf_record), 2241 bf_get(lpfc_fcf_record_mac_3, fcf_record), 2242 bf_get(lpfc_fcf_record_mac_4, fcf_record), 2243 bf_get(lpfc_fcf_record_mac_5, fcf_record), 2244 bf_get(lpfc_fcf_record_fab_name_0, fcf_record), 2245 bf_get(lpfc_fcf_record_fab_name_1, fcf_record), 2246 bf_get(lpfc_fcf_record_fab_name_2, fcf_record), 2247 bf_get(lpfc_fcf_record_fab_name_3, fcf_record), 2248 bf_get(lpfc_fcf_record_fab_name_4, fcf_record), 2249 bf_get(lpfc_fcf_record_fab_name_5, fcf_record), 2250 bf_get(lpfc_fcf_record_fab_name_6, fcf_record), 2251 bf_get(lpfc_fcf_record_fab_name_7, fcf_record), 2252 bf_get(lpfc_fcf_record_switch_name_0, fcf_record), 2253 bf_get(lpfc_fcf_record_switch_name_1, fcf_record), 2254 bf_get(lpfc_fcf_record_switch_name_2, fcf_record), 2255 bf_get(lpfc_fcf_record_switch_name_3, fcf_record), 2256 bf_get(lpfc_fcf_record_switch_name_4, fcf_record), 2257 bf_get(lpfc_fcf_record_switch_name_5, fcf_record), 2258 bf_get(lpfc_fcf_record_switch_name_6, fcf_record), 2259 bf_get(lpfc_fcf_record_switch_name_7, fcf_record), 2260 next_fcf_index); 2261 } 2262 2263 /** 2264 * lpfc_sli4_fcf_record_match - testing new FCF record for matching existing FCF 2265 * @phba: pointer to lpfc hba data structure. 2266 * @fcf_rec: pointer to an existing FCF record. 2267 * @new_fcf_record: pointer to a new FCF record. 2268 * @new_vlan_id: vlan id from the new FCF record. 2269 * 2270 * This function performs matching test of a new FCF record against an existing 2271 * FCF record. If the new_vlan_id passed in is LPFC_FCOE_IGNORE_VID, vlan id 2272 * will not be used as part of the FCF record matching criteria. 2273 * 2274 * Returns true if all the fields matching, otherwise returns false. 2275 */ 2276 static bool 2277 lpfc_sli4_fcf_record_match(struct lpfc_hba *phba, 2278 struct lpfc_fcf_rec *fcf_rec, 2279 struct fcf_record *new_fcf_record, 2280 uint16_t new_vlan_id) 2281 { 2282 if (new_vlan_id != LPFC_FCOE_IGNORE_VID) 2283 if (!lpfc_vlan_id_match(fcf_rec->vlan_id, new_vlan_id)) 2284 return false; 2285 if (!lpfc_mac_addr_match(fcf_rec->mac_addr, new_fcf_record)) 2286 return false; 2287 if (!lpfc_sw_name_match(fcf_rec->switch_name, new_fcf_record)) 2288 return false; 2289 if (!lpfc_fab_name_match(fcf_rec->fabric_name, new_fcf_record)) 2290 return false; 2291 if (fcf_rec->priority != new_fcf_record->fip_priority) 2292 return false; 2293 return true; 2294 } 2295 2296 /** 2297 * lpfc_sli4_fcf_rr_next_proc - processing next roundrobin fcf 2298 * @vport: Pointer to vport object. 2299 * @fcf_index: index to next fcf. 2300 * 2301 * This function processing the roundrobin fcf failover to next fcf index. 2302 * When this function is invoked, there will be a current fcf registered 2303 * for flogi. 2304 * Return: 0 for continue retrying flogi on currently registered fcf; 2305 * 1 for stop flogi on currently registered fcf; 2306 */ 2307 int lpfc_sli4_fcf_rr_next_proc(struct lpfc_vport *vport, uint16_t fcf_index) 2308 { 2309 struct lpfc_hba *phba = vport->phba; 2310 int rc; 2311 2312 if (fcf_index == LPFC_FCOE_FCF_NEXT_NONE) { 2313 spin_lock_irq(&phba->hbalock); 2314 if (phba->hba_flag & HBA_DEVLOSS_TMO) { 2315 spin_unlock_irq(&phba->hbalock); 2316 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2317 "2872 Devloss tmo with no eligible " 2318 "FCF, unregister in-use FCF (x%x) " 2319 "and rescan FCF table\n", 2320 phba->fcf.current_rec.fcf_indx); 2321 lpfc_unregister_fcf_rescan(phba); 2322 goto stop_flogi_current_fcf; 2323 } 2324 /* Mark the end to FLOGI roundrobin failover */ 2325 phba->hba_flag &= ~FCF_RR_INPROG; 2326 /* Allow action to new fcf asynchronous event */ 2327 phba->fcf.fcf_flag &= ~(FCF_AVAILABLE | FCF_SCAN_DONE); 2328 spin_unlock_irq(&phba->hbalock); 2329 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2330 "2865 No FCF available, stop roundrobin FCF " 2331 "failover and change port state:x%x/x%x\n", 2332 phba->pport->port_state, LPFC_VPORT_UNKNOWN); 2333 phba->pport->port_state = LPFC_VPORT_UNKNOWN; 2334 2335 if (!phba->fcf.fcf_redisc_attempted) { 2336 lpfc_unregister_fcf(phba); 2337 2338 rc = lpfc_sli4_redisc_fcf_table(phba); 2339 if (!rc) { 2340 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2341 "3195 Rediscover FCF table\n"); 2342 phba->fcf.fcf_redisc_attempted = 1; 2343 lpfc_sli4_clear_fcf_rr_bmask(phba); 2344 } else { 2345 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP, 2346 "3196 Rediscover FCF table " 2347 "failed. Status:x%x\n", rc); 2348 } 2349 } else { 2350 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP, 2351 "3197 Already rediscover FCF table " 2352 "attempted. No more retry\n"); 2353 } 2354 goto stop_flogi_current_fcf; 2355 } else { 2356 lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_ELS, 2357 "2794 Try FLOGI roundrobin FCF failover to " 2358 "(x%x)\n", fcf_index); 2359 rc = lpfc_sli4_fcf_rr_read_fcf_rec(phba, fcf_index); 2360 if (rc) 2361 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP | LOG_ELS, 2362 "2761 FLOGI roundrobin FCF failover " 2363 "failed (rc:x%x) to read FCF (x%x)\n", 2364 rc, phba->fcf.current_rec.fcf_indx); 2365 else 2366 goto stop_flogi_current_fcf; 2367 } 2368 return 0; 2369 2370 stop_flogi_current_fcf: 2371 lpfc_can_disctmo(vport); 2372 return 1; 2373 } 2374 2375 /** 2376 * lpfc_sli4_fcf_pri_list_del 2377 * @phba: pointer to lpfc hba data structure. 2378 * @fcf_index: the index of the fcf record to delete 2379 * This routine checks the on list flag of the fcf_index to be deleted. 2380 * If it is one the list then it is removed from the list, and the flag 2381 * is cleared. This routine grab the hbalock before removing the fcf 2382 * record from the list. 2383 **/ 2384 static void lpfc_sli4_fcf_pri_list_del(struct lpfc_hba *phba, 2385 uint16_t fcf_index) 2386 { 2387 struct lpfc_fcf_pri *new_fcf_pri; 2388 2389 new_fcf_pri = &phba->fcf.fcf_pri[fcf_index]; 2390 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2391 "3058 deleting idx x%x pri x%x flg x%x\n", 2392 fcf_index, new_fcf_pri->fcf_rec.priority, 2393 new_fcf_pri->fcf_rec.flag); 2394 spin_lock_irq(&phba->hbalock); 2395 if (new_fcf_pri->fcf_rec.flag & LPFC_FCF_ON_PRI_LIST) { 2396 if (phba->fcf.current_rec.priority == 2397 new_fcf_pri->fcf_rec.priority) 2398 phba->fcf.eligible_fcf_cnt--; 2399 list_del_init(&new_fcf_pri->list); 2400 new_fcf_pri->fcf_rec.flag &= ~LPFC_FCF_ON_PRI_LIST; 2401 } 2402 spin_unlock_irq(&phba->hbalock); 2403 } 2404 2405 /** 2406 * lpfc_sli4_set_fcf_flogi_fail 2407 * @phba: pointer to lpfc hba data structure. 2408 * @fcf_index: the index of the fcf record to update 2409 * This routine acquires the hbalock and then set the LPFC_FCF_FLOGI_FAILED 2410 * flag so the the round robin slection for the particular priority level 2411 * will try a different fcf record that does not have this bit set. 2412 * If the fcf record is re-read for any reason this flag is cleared brfore 2413 * adding it to the priority list. 2414 **/ 2415 void 2416 lpfc_sli4_set_fcf_flogi_fail(struct lpfc_hba *phba, uint16_t fcf_index) 2417 { 2418 struct lpfc_fcf_pri *new_fcf_pri; 2419 new_fcf_pri = &phba->fcf.fcf_pri[fcf_index]; 2420 spin_lock_irq(&phba->hbalock); 2421 new_fcf_pri->fcf_rec.flag |= LPFC_FCF_FLOGI_FAILED; 2422 spin_unlock_irq(&phba->hbalock); 2423 } 2424 2425 /** 2426 * lpfc_sli4_fcf_pri_list_add 2427 * @phba: pointer to lpfc hba data structure. 2428 * @fcf_index: the index of the fcf record to add 2429 * @new_fcf_record: pointer to a new FCF record. 2430 * This routine checks the priority of the fcf_index to be added. 2431 * If it is a lower priority than the current head of the fcf_pri list 2432 * then it is added to the list in the right order. 2433 * If it is the same priority as the current head of the list then it 2434 * is added to the head of the list and its bit in the rr_bmask is set. 2435 * If the fcf_index to be added is of a higher priority than the current 2436 * head of the list then the rr_bmask is cleared, its bit is set in the 2437 * rr_bmask and it is added to the head of the list. 2438 * returns: 2439 * 0=success 1=failure 2440 **/ 2441 static int lpfc_sli4_fcf_pri_list_add(struct lpfc_hba *phba, 2442 uint16_t fcf_index, 2443 struct fcf_record *new_fcf_record) 2444 { 2445 uint16_t current_fcf_pri; 2446 uint16_t last_index; 2447 struct lpfc_fcf_pri *fcf_pri; 2448 struct lpfc_fcf_pri *next_fcf_pri; 2449 struct lpfc_fcf_pri *new_fcf_pri; 2450 int ret; 2451 2452 new_fcf_pri = &phba->fcf.fcf_pri[fcf_index]; 2453 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2454 "3059 adding idx x%x pri x%x flg x%x\n", 2455 fcf_index, new_fcf_record->fip_priority, 2456 new_fcf_pri->fcf_rec.flag); 2457 spin_lock_irq(&phba->hbalock); 2458 if (new_fcf_pri->fcf_rec.flag & LPFC_FCF_ON_PRI_LIST) 2459 list_del_init(&new_fcf_pri->list); 2460 new_fcf_pri->fcf_rec.fcf_index = fcf_index; 2461 new_fcf_pri->fcf_rec.priority = new_fcf_record->fip_priority; 2462 if (list_empty(&phba->fcf.fcf_pri_list)) { 2463 list_add(&new_fcf_pri->list, &phba->fcf.fcf_pri_list); 2464 ret = lpfc_sli4_fcf_rr_index_set(phba, 2465 new_fcf_pri->fcf_rec.fcf_index); 2466 goto out; 2467 } 2468 2469 last_index = find_first_bit(phba->fcf.fcf_rr_bmask, 2470 LPFC_SLI4_FCF_TBL_INDX_MAX); 2471 if (last_index >= LPFC_SLI4_FCF_TBL_INDX_MAX) { 2472 ret = 0; /* Empty rr list */ 2473 goto out; 2474 } 2475 current_fcf_pri = phba->fcf.fcf_pri[last_index].fcf_rec.priority; 2476 if (new_fcf_pri->fcf_rec.priority <= current_fcf_pri) { 2477 list_add(&new_fcf_pri->list, &phba->fcf.fcf_pri_list); 2478 if (new_fcf_pri->fcf_rec.priority < current_fcf_pri) { 2479 memset(phba->fcf.fcf_rr_bmask, 0, 2480 sizeof(*phba->fcf.fcf_rr_bmask)); 2481 /* fcfs_at_this_priority_level = 1; */ 2482 phba->fcf.eligible_fcf_cnt = 1; 2483 } else 2484 /* fcfs_at_this_priority_level++; */ 2485 phba->fcf.eligible_fcf_cnt++; 2486 ret = lpfc_sli4_fcf_rr_index_set(phba, 2487 new_fcf_pri->fcf_rec.fcf_index); 2488 goto out; 2489 } 2490 2491 list_for_each_entry_safe(fcf_pri, next_fcf_pri, 2492 &phba->fcf.fcf_pri_list, list) { 2493 if (new_fcf_pri->fcf_rec.priority <= 2494 fcf_pri->fcf_rec.priority) { 2495 if (fcf_pri->list.prev == &phba->fcf.fcf_pri_list) 2496 list_add(&new_fcf_pri->list, 2497 &phba->fcf.fcf_pri_list); 2498 else 2499 list_add(&new_fcf_pri->list, 2500 &((struct lpfc_fcf_pri *) 2501 fcf_pri->list.prev)->list); 2502 ret = 0; 2503 goto out; 2504 } else if (fcf_pri->list.next == &phba->fcf.fcf_pri_list 2505 || new_fcf_pri->fcf_rec.priority < 2506 next_fcf_pri->fcf_rec.priority) { 2507 list_add(&new_fcf_pri->list, &fcf_pri->list); 2508 ret = 0; 2509 goto out; 2510 } 2511 if (new_fcf_pri->fcf_rec.priority > fcf_pri->fcf_rec.priority) 2512 continue; 2513 2514 } 2515 ret = 1; 2516 out: 2517 /* we use = instead of |= to clear the FLOGI_FAILED flag. */ 2518 new_fcf_pri->fcf_rec.flag = LPFC_FCF_ON_PRI_LIST; 2519 spin_unlock_irq(&phba->hbalock); 2520 return ret; 2521 } 2522 2523 /** 2524 * lpfc_mbx_cmpl_fcf_scan_read_fcf_rec - fcf scan read_fcf mbox cmpl handler. 2525 * @phba: pointer to lpfc hba data structure. 2526 * @mboxq: pointer to mailbox object. 2527 * 2528 * This function iterates through all the fcf records available in 2529 * HBA and chooses the optimal FCF record for discovery. After finding 2530 * the FCF for discovery it registers the FCF record and kicks start 2531 * discovery. 2532 * If FCF_IN_USE flag is set in currently used FCF, the routine tries to 2533 * use an FCF record which matches fabric name and mac address of the 2534 * currently used FCF record. 2535 * If the driver supports only one FCF, it will try to use the FCF record 2536 * used by BOOT_BIOS. 2537 */ 2538 void 2539 lpfc_mbx_cmpl_fcf_scan_read_fcf_rec(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq) 2540 { 2541 struct fcf_record *new_fcf_record; 2542 uint32_t boot_flag, addr_mode; 2543 uint16_t fcf_index, next_fcf_index; 2544 struct lpfc_fcf_rec *fcf_rec = NULL; 2545 uint16_t vlan_id = LPFC_FCOE_NULL_VID; 2546 bool select_new_fcf; 2547 int rc; 2548 2549 /* If there is pending FCoE event restart FCF table scan */ 2550 if (lpfc_check_pending_fcoe_event(phba, LPFC_SKIP_UNREG_FCF)) { 2551 lpfc_sli4_mbox_cmd_free(phba, mboxq); 2552 return; 2553 } 2554 2555 /* Parse the FCF record from the non-embedded mailbox command */ 2556 new_fcf_record = lpfc_sli4_fcf_rec_mbox_parse(phba, mboxq, 2557 &next_fcf_index); 2558 if (!new_fcf_record) { 2559 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 2560 "2765 Mailbox command READ_FCF_RECORD " 2561 "failed to retrieve a FCF record.\n"); 2562 /* Let next new FCF event trigger fast failover */ 2563 spin_lock_irq(&phba->hbalock); 2564 phba->hba_flag &= ~FCF_TS_INPROG; 2565 spin_unlock_irq(&phba->hbalock); 2566 lpfc_sli4_mbox_cmd_free(phba, mboxq); 2567 return; 2568 } 2569 2570 /* Check the FCF record against the connection list */ 2571 rc = lpfc_match_fcf_conn_list(phba, new_fcf_record, &boot_flag, 2572 &addr_mode, &vlan_id); 2573 2574 /* Log the FCF record information if turned on */ 2575 lpfc_sli4_log_fcf_record_info(phba, new_fcf_record, vlan_id, 2576 next_fcf_index); 2577 2578 /* 2579 * If the fcf record does not match with connect list entries 2580 * read the next entry; otherwise, this is an eligible FCF 2581 * record for roundrobin FCF failover. 2582 */ 2583 if (!rc) { 2584 lpfc_sli4_fcf_pri_list_del(phba, 2585 bf_get(lpfc_fcf_record_fcf_index, 2586 new_fcf_record)); 2587 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP, 2588 "2781 FCF (x%x) failed connection " 2589 "list check: (x%x/x%x/%x)\n", 2590 bf_get(lpfc_fcf_record_fcf_index, 2591 new_fcf_record), 2592 bf_get(lpfc_fcf_record_fcf_avail, 2593 new_fcf_record), 2594 bf_get(lpfc_fcf_record_fcf_valid, 2595 new_fcf_record), 2596 bf_get(lpfc_fcf_record_fcf_sol, 2597 new_fcf_record)); 2598 if ((phba->fcf.fcf_flag & FCF_IN_USE) && 2599 lpfc_sli4_fcf_record_match(phba, &phba->fcf.current_rec, 2600 new_fcf_record, LPFC_FCOE_IGNORE_VID)) { 2601 if (bf_get(lpfc_fcf_record_fcf_index, new_fcf_record) != 2602 phba->fcf.current_rec.fcf_indx) { 2603 lpfc_printf_log(phba, KERN_ERR, 2604 LOG_TRACE_EVENT, 2605 "2862 FCF (x%x) matches property " 2606 "of in-use FCF (x%x)\n", 2607 bf_get(lpfc_fcf_record_fcf_index, 2608 new_fcf_record), 2609 phba->fcf.current_rec.fcf_indx); 2610 goto read_next_fcf; 2611 } 2612 /* 2613 * In case the current in-use FCF record becomes 2614 * invalid/unavailable during FCF discovery that 2615 * was not triggered by fast FCF failover process, 2616 * treat it as fast FCF failover. 2617 */ 2618 if (!(phba->fcf.fcf_flag & FCF_REDISC_PEND) && 2619 !(phba->fcf.fcf_flag & FCF_REDISC_FOV)) { 2620 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP, 2621 "2835 Invalid in-use FCF " 2622 "(x%x), enter FCF failover " 2623 "table scan.\n", 2624 phba->fcf.current_rec.fcf_indx); 2625 spin_lock_irq(&phba->hbalock); 2626 phba->fcf.fcf_flag |= FCF_REDISC_FOV; 2627 spin_unlock_irq(&phba->hbalock); 2628 lpfc_sli4_mbox_cmd_free(phba, mboxq); 2629 lpfc_sli4_fcf_scan_read_fcf_rec(phba, 2630 LPFC_FCOE_FCF_GET_FIRST); 2631 return; 2632 } 2633 } 2634 goto read_next_fcf; 2635 } else { 2636 fcf_index = bf_get(lpfc_fcf_record_fcf_index, new_fcf_record); 2637 rc = lpfc_sli4_fcf_pri_list_add(phba, fcf_index, 2638 new_fcf_record); 2639 if (rc) 2640 goto read_next_fcf; 2641 } 2642 2643 /* 2644 * If this is not the first FCF discovery of the HBA, use last 2645 * FCF record for the discovery. The condition that a rescan 2646 * matches the in-use FCF record: fabric name, switch name, mac 2647 * address, and vlan_id. 2648 */ 2649 spin_lock_irq(&phba->hbalock); 2650 if (phba->fcf.fcf_flag & FCF_IN_USE) { 2651 if (phba->cfg_fcf_failover_policy == LPFC_FCF_FOV && 2652 lpfc_sli4_fcf_record_match(phba, &phba->fcf.current_rec, 2653 new_fcf_record, vlan_id)) { 2654 if (bf_get(lpfc_fcf_record_fcf_index, new_fcf_record) == 2655 phba->fcf.current_rec.fcf_indx) { 2656 phba->fcf.fcf_flag |= FCF_AVAILABLE; 2657 if (phba->fcf.fcf_flag & FCF_REDISC_PEND) 2658 /* Stop FCF redisc wait timer */ 2659 __lpfc_sli4_stop_fcf_redisc_wait_timer( 2660 phba); 2661 else if (phba->fcf.fcf_flag & FCF_REDISC_FOV) 2662 /* Fast failover, mark completed */ 2663 phba->fcf.fcf_flag &= ~FCF_REDISC_FOV; 2664 spin_unlock_irq(&phba->hbalock); 2665 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2666 "2836 New FCF matches in-use " 2667 "FCF (x%x), port_state:x%x, " 2668 "fc_flag:x%x\n", 2669 phba->fcf.current_rec.fcf_indx, 2670 phba->pport->port_state, 2671 phba->pport->fc_flag); 2672 goto out; 2673 } else 2674 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 2675 "2863 New FCF (x%x) matches " 2676 "property of in-use FCF (x%x)\n", 2677 bf_get(lpfc_fcf_record_fcf_index, 2678 new_fcf_record), 2679 phba->fcf.current_rec.fcf_indx); 2680 } 2681 /* 2682 * Read next FCF record from HBA searching for the matching 2683 * with in-use record only if not during the fast failover 2684 * period. In case of fast failover period, it shall try to 2685 * determine whether the FCF record just read should be the 2686 * next candidate. 2687 */ 2688 if (!(phba->fcf.fcf_flag & FCF_REDISC_FOV)) { 2689 spin_unlock_irq(&phba->hbalock); 2690 goto read_next_fcf; 2691 } 2692 } 2693 /* 2694 * Update on failover FCF record only if it's in FCF fast-failover 2695 * period; otherwise, update on current FCF record. 2696 */ 2697 if (phba->fcf.fcf_flag & FCF_REDISC_FOV) 2698 fcf_rec = &phba->fcf.failover_rec; 2699 else 2700 fcf_rec = &phba->fcf.current_rec; 2701 2702 if (phba->fcf.fcf_flag & FCF_AVAILABLE) { 2703 /* 2704 * If the driver FCF record does not have boot flag 2705 * set and new hba fcf record has boot flag set, use 2706 * the new hba fcf record. 2707 */ 2708 if (boot_flag && !(fcf_rec->flag & BOOT_ENABLE)) { 2709 /* Choose this FCF record */ 2710 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2711 "2837 Update current FCF record " 2712 "(x%x) with new FCF record (x%x)\n", 2713 fcf_rec->fcf_indx, 2714 bf_get(lpfc_fcf_record_fcf_index, 2715 new_fcf_record)); 2716 __lpfc_update_fcf_record(phba, fcf_rec, new_fcf_record, 2717 addr_mode, vlan_id, BOOT_ENABLE); 2718 spin_unlock_irq(&phba->hbalock); 2719 goto read_next_fcf; 2720 } 2721 /* 2722 * If the driver FCF record has boot flag set and the 2723 * new hba FCF record does not have boot flag, read 2724 * the next FCF record. 2725 */ 2726 if (!boot_flag && (fcf_rec->flag & BOOT_ENABLE)) { 2727 spin_unlock_irq(&phba->hbalock); 2728 goto read_next_fcf; 2729 } 2730 /* 2731 * If the new hba FCF record has lower priority value 2732 * than the driver FCF record, use the new record. 2733 */ 2734 if (new_fcf_record->fip_priority < fcf_rec->priority) { 2735 /* Choose the new FCF record with lower priority */ 2736 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2737 "2838 Update current FCF record " 2738 "(x%x) with new FCF record (x%x)\n", 2739 fcf_rec->fcf_indx, 2740 bf_get(lpfc_fcf_record_fcf_index, 2741 new_fcf_record)); 2742 __lpfc_update_fcf_record(phba, fcf_rec, new_fcf_record, 2743 addr_mode, vlan_id, 0); 2744 /* Reset running random FCF selection count */ 2745 phba->fcf.eligible_fcf_cnt = 1; 2746 } else if (new_fcf_record->fip_priority == fcf_rec->priority) { 2747 /* Update running random FCF selection count */ 2748 phba->fcf.eligible_fcf_cnt++; 2749 select_new_fcf = lpfc_sli4_new_fcf_random_select(phba, 2750 phba->fcf.eligible_fcf_cnt); 2751 if (select_new_fcf) { 2752 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2753 "2839 Update current FCF record " 2754 "(x%x) with new FCF record (x%x)\n", 2755 fcf_rec->fcf_indx, 2756 bf_get(lpfc_fcf_record_fcf_index, 2757 new_fcf_record)); 2758 /* Choose the new FCF by random selection */ 2759 __lpfc_update_fcf_record(phba, fcf_rec, 2760 new_fcf_record, 2761 addr_mode, vlan_id, 0); 2762 } 2763 } 2764 spin_unlock_irq(&phba->hbalock); 2765 goto read_next_fcf; 2766 } 2767 /* 2768 * This is the first suitable FCF record, choose this record for 2769 * initial best-fit FCF. 2770 */ 2771 if (fcf_rec) { 2772 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2773 "2840 Update initial FCF candidate " 2774 "with FCF (x%x)\n", 2775 bf_get(lpfc_fcf_record_fcf_index, 2776 new_fcf_record)); 2777 __lpfc_update_fcf_record(phba, fcf_rec, new_fcf_record, 2778 addr_mode, vlan_id, (boot_flag ? 2779 BOOT_ENABLE : 0)); 2780 phba->fcf.fcf_flag |= FCF_AVAILABLE; 2781 /* Setup initial running random FCF selection count */ 2782 phba->fcf.eligible_fcf_cnt = 1; 2783 } 2784 spin_unlock_irq(&phba->hbalock); 2785 goto read_next_fcf; 2786 2787 read_next_fcf: 2788 lpfc_sli4_mbox_cmd_free(phba, mboxq); 2789 if (next_fcf_index == LPFC_FCOE_FCF_NEXT_NONE || next_fcf_index == 0) { 2790 if (phba->fcf.fcf_flag & FCF_REDISC_FOV) { 2791 /* 2792 * Case of FCF fast failover scan 2793 */ 2794 2795 /* 2796 * It has not found any suitable FCF record, cancel 2797 * FCF scan inprogress, and do nothing 2798 */ 2799 if (!(phba->fcf.failover_rec.flag & RECORD_VALID)) { 2800 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP, 2801 "2782 No suitable FCF found: " 2802 "(x%x/x%x)\n", 2803 phba->fcoe_eventtag_at_fcf_scan, 2804 bf_get(lpfc_fcf_record_fcf_index, 2805 new_fcf_record)); 2806 spin_lock_irq(&phba->hbalock); 2807 if (phba->hba_flag & HBA_DEVLOSS_TMO) { 2808 phba->hba_flag &= ~FCF_TS_INPROG; 2809 spin_unlock_irq(&phba->hbalock); 2810 /* Unregister in-use FCF and rescan */ 2811 lpfc_printf_log(phba, KERN_INFO, 2812 LOG_FIP, 2813 "2864 On devloss tmo " 2814 "unreg in-use FCF and " 2815 "rescan FCF table\n"); 2816 lpfc_unregister_fcf_rescan(phba); 2817 return; 2818 } 2819 /* 2820 * Let next new FCF event trigger fast failover 2821 */ 2822 phba->hba_flag &= ~FCF_TS_INPROG; 2823 spin_unlock_irq(&phba->hbalock); 2824 return; 2825 } 2826 /* 2827 * It has found a suitable FCF record that is not 2828 * the same as in-use FCF record, unregister the 2829 * in-use FCF record, replace the in-use FCF record 2830 * with the new FCF record, mark FCF fast failover 2831 * completed, and then start register the new FCF 2832 * record. 2833 */ 2834 2835 /* Unregister the current in-use FCF record */ 2836 lpfc_unregister_fcf(phba); 2837 2838 /* Replace in-use record with the new record */ 2839 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2840 "2842 Replace in-use FCF (x%x) " 2841 "with failover FCF (x%x)\n", 2842 phba->fcf.current_rec.fcf_indx, 2843 phba->fcf.failover_rec.fcf_indx); 2844 memcpy(&phba->fcf.current_rec, 2845 &phba->fcf.failover_rec, 2846 sizeof(struct lpfc_fcf_rec)); 2847 /* 2848 * Mark the fast FCF failover rediscovery completed 2849 * and the start of the first round of the roundrobin 2850 * FCF failover. 2851 */ 2852 spin_lock_irq(&phba->hbalock); 2853 phba->fcf.fcf_flag &= ~FCF_REDISC_FOV; 2854 spin_unlock_irq(&phba->hbalock); 2855 /* Register to the new FCF record */ 2856 lpfc_register_fcf(phba); 2857 } else { 2858 /* 2859 * In case of transaction period to fast FCF failover, 2860 * do nothing when search to the end of the FCF table. 2861 */ 2862 if ((phba->fcf.fcf_flag & FCF_REDISC_EVT) || 2863 (phba->fcf.fcf_flag & FCF_REDISC_PEND)) 2864 return; 2865 2866 if (phba->cfg_fcf_failover_policy == LPFC_FCF_FOV && 2867 phba->fcf.fcf_flag & FCF_IN_USE) { 2868 /* 2869 * In case the current in-use FCF record no 2870 * longer existed during FCF discovery that 2871 * was not triggered by fast FCF failover 2872 * process, treat it as fast FCF failover. 2873 */ 2874 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2875 "2841 In-use FCF record (x%x) " 2876 "not reported, entering fast " 2877 "FCF failover mode scanning.\n", 2878 phba->fcf.current_rec.fcf_indx); 2879 spin_lock_irq(&phba->hbalock); 2880 phba->fcf.fcf_flag |= FCF_REDISC_FOV; 2881 spin_unlock_irq(&phba->hbalock); 2882 lpfc_sli4_fcf_scan_read_fcf_rec(phba, 2883 LPFC_FCOE_FCF_GET_FIRST); 2884 return; 2885 } 2886 /* Register to the new FCF record */ 2887 lpfc_register_fcf(phba); 2888 } 2889 } else 2890 lpfc_sli4_fcf_scan_read_fcf_rec(phba, next_fcf_index); 2891 return; 2892 2893 out: 2894 lpfc_sli4_mbox_cmd_free(phba, mboxq); 2895 lpfc_register_fcf(phba); 2896 2897 return; 2898 } 2899 2900 /** 2901 * lpfc_mbx_cmpl_fcf_rr_read_fcf_rec - fcf roundrobin read_fcf mbox cmpl hdler 2902 * @phba: pointer to lpfc hba data structure. 2903 * @mboxq: pointer to mailbox object. 2904 * 2905 * This is the callback function for FLOGI failure roundrobin FCF failover 2906 * read FCF record mailbox command from the eligible FCF record bmask for 2907 * performing the failover. If the FCF read back is not valid/available, it 2908 * fails through to retrying FLOGI to the currently registered FCF again. 2909 * Otherwise, if the FCF read back is valid and available, it will set the 2910 * newly read FCF record to the failover FCF record, unregister currently 2911 * registered FCF record, copy the failover FCF record to the current 2912 * FCF record, and then register the current FCF record before proceeding 2913 * to trying FLOGI on the new failover FCF. 2914 */ 2915 void 2916 lpfc_mbx_cmpl_fcf_rr_read_fcf_rec(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq) 2917 { 2918 struct fcf_record *new_fcf_record; 2919 uint32_t boot_flag, addr_mode; 2920 uint16_t next_fcf_index, fcf_index; 2921 uint16_t current_fcf_index; 2922 uint16_t vlan_id; 2923 int rc; 2924 2925 /* If link state is not up, stop the roundrobin failover process */ 2926 if (phba->link_state < LPFC_LINK_UP) { 2927 spin_lock_irq(&phba->hbalock); 2928 phba->fcf.fcf_flag &= ~FCF_DISCOVERY; 2929 phba->hba_flag &= ~FCF_RR_INPROG; 2930 spin_unlock_irq(&phba->hbalock); 2931 goto out; 2932 } 2933 2934 /* Parse the FCF record from the non-embedded mailbox command */ 2935 new_fcf_record = lpfc_sli4_fcf_rec_mbox_parse(phba, mboxq, 2936 &next_fcf_index); 2937 if (!new_fcf_record) { 2938 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP, 2939 "2766 Mailbox command READ_FCF_RECORD " 2940 "failed to retrieve a FCF record. " 2941 "hba_flg x%x fcf_flg x%x\n", phba->hba_flag, 2942 phba->fcf.fcf_flag); 2943 lpfc_unregister_fcf_rescan(phba); 2944 goto out; 2945 } 2946 2947 /* Get the needed parameters from FCF record */ 2948 rc = lpfc_match_fcf_conn_list(phba, new_fcf_record, &boot_flag, 2949 &addr_mode, &vlan_id); 2950 2951 /* Log the FCF record information if turned on */ 2952 lpfc_sli4_log_fcf_record_info(phba, new_fcf_record, vlan_id, 2953 next_fcf_index); 2954 2955 fcf_index = bf_get(lpfc_fcf_record_fcf_index, new_fcf_record); 2956 if (!rc) { 2957 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2958 "2848 Remove ineligible FCF (x%x) from " 2959 "from roundrobin bmask\n", fcf_index); 2960 /* Clear roundrobin bmask bit for ineligible FCF */ 2961 lpfc_sli4_fcf_rr_index_clear(phba, fcf_index); 2962 /* Perform next round of roundrobin FCF failover */ 2963 fcf_index = lpfc_sli4_fcf_rr_next_index_get(phba); 2964 rc = lpfc_sli4_fcf_rr_next_proc(phba->pport, fcf_index); 2965 if (rc) 2966 goto out; 2967 goto error_out; 2968 } 2969 2970 if (fcf_index == phba->fcf.current_rec.fcf_indx) { 2971 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2972 "2760 Perform FLOGI roundrobin FCF failover: " 2973 "FCF (x%x) back to FCF (x%x)\n", 2974 phba->fcf.current_rec.fcf_indx, fcf_index); 2975 /* Wait 500 ms before retrying FLOGI to current FCF */ 2976 msleep(500); 2977 lpfc_issue_init_vfi(phba->pport); 2978 goto out; 2979 } 2980 2981 /* Upload new FCF record to the failover FCF record */ 2982 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2983 "2834 Update current FCF (x%x) with new FCF (x%x)\n", 2984 phba->fcf.failover_rec.fcf_indx, fcf_index); 2985 spin_lock_irq(&phba->hbalock); 2986 __lpfc_update_fcf_record(phba, &phba->fcf.failover_rec, 2987 new_fcf_record, addr_mode, vlan_id, 2988 (boot_flag ? BOOT_ENABLE : 0)); 2989 spin_unlock_irq(&phba->hbalock); 2990 2991 current_fcf_index = phba->fcf.current_rec.fcf_indx; 2992 2993 /* Unregister the current in-use FCF record */ 2994 lpfc_unregister_fcf(phba); 2995 2996 /* Replace in-use record with the new record */ 2997 memcpy(&phba->fcf.current_rec, &phba->fcf.failover_rec, 2998 sizeof(struct lpfc_fcf_rec)); 2999 3000 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 3001 "2783 Perform FLOGI roundrobin FCF failover: FCF " 3002 "(x%x) to FCF (x%x)\n", current_fcf_index, fcf_index); 3003 3004 error_out: 3005 lpfc_register_fcf(phba); 3006 out: 3007 lpfc_sli4_mbox_cmd_free(phba, mboxq); 3008 } 3009 3010 /** 3011 * lpfc_mbx_cmpl_read_fcf_rec - read fcf completion handler. 3012 * @phba: pointer to lpfc hba data structure. 3013 * @mboxq: pointer to mailbox object. 3014 * 3015 * This is the callback function of read FCF record mailbox command for 3016 * updating the eligible FCF bmask for FLOGI failure roundrobin FCF 3017 * failover when a new FCF event happened. If the FCF read back is 3018 * valid/available and it passes the connection list check, it updates 3019 * the bmask for the eligible FCF record for roundrobin failover. 3020 */ 3021 void 3022 lpfc_mbx_cmpl_read_fcf_rec(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq) 3023 { 3024 struct fcf_record *new_fcf_record; 3025 uint32_t boot_flag, addr_mode; 3026 uint16_t fcf_index, next_fcf_index; 3027 uint16_t vlan_id; 3028 int rc; 3029 3030 /* If link state is not up, no need to proceed */ 3031 if (phba->link_state < LPFC_LINK_UP) 3032 goto out; 3033 3034 /* If FCF discovery period is over, no need to proceed */ 3035 if (!(phba->fcf.fcf_flag & FCF_DISCOVERY)) 3036 goto out; 3037 3038 /* Parse the FCF record from the non-embedded mailbox command */ 3039 new_fcf_record = lpfc_sli4_fcf_rec_mbox_parse(phba, mboxq, 3040 &next_fcf_index); 3041 if (!new_fcf_record) { 3042 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 3043 "2767 Mailbox command READ_FCF_RECORD " 3044 "failed to retrieve a FCF record.\n"); 3045 goto out; 3046 } 3047 3048 /* Check the connection list for eligibility */ 3049 rc = lpfc_match_fcf_conn_list(phba, new_fcf_record, &boot_flag, 3050 &addr_mode, &vlan_id); 3051 3052 /* Log the FCF record information if turned on */ 3053 lpfc_sli4_log_fcf_record_info(phba, new_fcf_record, vlan_id, 3054 next_fcf_index); 3055 3056 if (!rc) 3057 goto out; 3058 3059 /* Update the eligible FCF record index bmask */ 3060 fcf_index = bf_get(lpfc_fcf_record_fcf_index, new_fcf_record); 3061 3062 rc = lpfc_sli4_fcf_pri_list_add(phba, fcf_index, new_fcf_record); 3063 3064 out: 3065 lpfc_sli4_mbox_cmd_free(phba, mboxq); 3066 } 3067 3068 /** 3069 * lpfc_init_vfi_cmpl - Completion handler for init_vfi mbox command. 3070 * @phba: pointer to lpfc hba data structure. 3071 * @mboxq: pointer to mailbox data structure. 3072 * 3073 * This function handles completion of init vfi mailbox command. 3074 */ 3075 static void 3076 lpfc_init_vfi_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq) 3077 { 3078 struct lpfc_vport *vport = mboxq->vport; 3079 3080 /* 3081 * VFI not supported on interface type 0, just do the flogi 3082 * Also continue if the VFI is in use - just use the same one. 3083 */ 3084 if (mboxq->u.mb.mbxStatus && 3085 (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) != 3086 LPFC_SLI_INTF_IF_TYPE_0) && 3087 mboxq->u.mb.mbxStatus != MBX_VFI_IN_USE) { 3088 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 3089 "2891 Init VFI mailbox failed 0x%x\n", 3090 mboxq->u.mb.mbxStatus); 3091 mempool_free(mboxq, phba->mbox_mem_pool); 3092 lpfc_vport_set_state(vport, FC_VPORT_FAILED); 3093 return; 3094 } 3095 3096 lpfc_initial_flogi(vport); 3097 mempool_free(mboxq, phba->mbox_mem_pool); 3098 return; 3099 } 3100 3101 /** 3102 * lpfc_issue_init_vfi - Issue init_vfi mailbox command. 3103 * @vport: pointer to lpfc_vport data structure. 3104 * 3105 * This function issue a init_vfi mailbox command to initialize the VFI and 3106 * VPI for the physical port. 3107 */ 3108 void 3109 lpfc_issue_init_vfi(struct lpfc_vport *vport) 3110 { 3111 LPFC_MBOXQ_t *mboxq; 3112 int rc; 3113 struct lpfc_hba *phba = vport->phba; 3114 3115 mboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 3116 if (!mboxq) { 3117 lpfc_printf_vlog(vport, KERN_ERR, 3118 LOG_TRACE_EVENT, "2892 Failed to allocate " 3119 "init_vfi mailbox\n"); 3120 return; 3121 } 3122 lpfc_init_vfi(mboxq, vport); 3123 mboxq->mbox_cmpl = lpfc_init_vfi_cmpl; 3124 rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_NOWAIT); 3125 if (rc == MBX_NOT_FINISHED) { 3126 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 3127 "2893 Failed to issue init_vfi mailbox\n"); 3128 mempool_free(mboxq, vport->phba->mbox_mem_pool); 3129 } 3130 } 3131 3132 /** 3133 * lpfc_init_vpi_cmpl - Completion handler for init_vpi mbox command. 3134 * @phba: pointer to lpfc hba data structure. 3135 * @mboxq: pointer to mailbox data structure. 3136 * 3137 * This function handles completion of init vpi mailbox command. 3138 */ 3139 void 3140 lpfc_init_vpi_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq) 3141 { 3142 struct lpfc_vport *vport = mboxq->vport; 3143 struct lpfc_nodelist *ndlp; 3144 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 3145 3146 if (mboxq->u.mb.mbxStatus) { 3147 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 3148 "2609 Init VPI mailbox failed 0x%x\n", 3149 mboxq->u.mb.mbxStatus); 3150 mempool_free(mboxq, phba->mbox_mem_pool); 3151 lpfc_vport_set_state(vport, FC_VPORT_FAILED); 3152 return; 3153 } 3154 spin_lock_irq(shost->host_lock); 3155 vport->fc_flag &= ~FC_VPORT_NEEDS_INIT_VPI; 3156 spin_unlock_irq(shost->host_lock); 3157 3158 /* If this port is physical port or FDISC is done, do reg_vpi */ 3159 if ((phba->pport == vport) || (vport->port_state == LPFC_FDISC)) { 3160 ndlp = lpfc_findnode_did(vport, Fabric_DID); 3161 if (!ndlp) 3162 lpfc_printf_vlog(vport, KERN_ERR, 3163 LOG_TRACE_EVENT, 3164 "2731 Cannot find fabric " 3165 "controller node\n"); 3166 else 3167 lpfc_register_new_vport(phba, vport, ndlp); 3168 mempool_free(mboxq, phba->mbox_mem_pool); 3169 return; 3170 } 3171 3172 if (phba->link_flag & LS_NPIV_FAB_SUPPORTED) 3173 lpfc_initial_fdisc(vport); 3174 else { 3175 lpfc_vport_set_state(vport, FC_VPORT_NO_FABRIC_SUPP); 3176 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 3177 "2606 No NPIV Fabric support\n"); 3178 } 3179 mempool_free(mboxq, phba->mbox_mem_pool); 3180 return; 3181 } 3182 3183 /** 3184 * lpfc_issue_init_vpi - Issue init_vpi mailbox command. 3185 * @vport: pointer to lpfc_vport data structure. 3186 * 3187 * This function issue a init_vpi mailbox command to initialize 3188 * VPI for the vport. 3189 */ 3190 void 3191 lpfc_issue_init_vpi(struct lpfc_vport *vport) 3192 { 3193 LPFC_MBOXQ_t *mboxq; 3194 int rc, vpi; 3195 3196 if ((vport->port_type != LPFC_PHYSICAL_PORT) && (!vport->vpi)) { 3197 vpi = lpfc_alloc_vpi(vport->phba); 3198 if (!vpi) { 3199 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 3200 "3303 Failed to obtain vport vpi\n"); 3201 lpfc_vport_set_state(vport, FC_VPORT_FAILED); 3202 return; 3203 } 3204 vport->vpi = vpi; 3205 } 3206 3207 mboxq = mempool_alloc(vport->phba->mbox_mem_pool, GFP_KERNEL); 3208 if (!mboxq) { 3209 lpfc_printf_vlog(vport, KERN_ERR, 3210 LOG_TRACE_EVENT, "2607 Failed to allocate " 3211 "init_vpi mailbox\n"); 3212 return; 3213 } 3214 lpfc_init_vpi(vport->phba, mboxq, vport->vpi); 3215 mboxq->vport = vport; 3216 mboxq->mbox_cmpl = lpfc_init_vpi_cmpl; 3217 rc = lpfc_sli_issue_mbox(vport->phba, mboxq, MBX_NOWAIT); 3218 if (rc == MBX_NOT_FINISHED) { 3219 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 3220 "2608 Failed to issue init_vpi mailbox\n"); 3221 mempool_free(mboxq, vport->phba->mbox_mem_pool); 3222 } 3223 } 3224 3225 /** 3226 * lpfc_start_fdiscs - send fdiscs for each vports on this port. 3227 * @phba: pointer to lpfc hba data structure. 3228 * 3229 * This function loops through the list of vports on the @phba and issues an 3230 * FDISC if possible. 3231 */ 3232 void 3233 lpfc_start_fdiscs(struct lpfc_hba *phba) 3234 { 3235 struct lpfc_vport **vports; 3236 int i; 3237 3238 vports = lpfc_create_vport_work_array(phba); 3239 if (vports != NULL) { 3240 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) { 3241 if (vports[i]->port_type == LPFC_PHYSICAL_PORT) 3242 continue; 3243 /* There are no vpi for this vport */ 3244 if (vports[i]->vpi > phba->max_vpi) { 3245 lpfc_vport_set_state(vports[i], 3246 FC_VPORT_FAILED); 3247 continue; 3248 } 3249 if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) { 3250 lpfc_vport_set_state(vports[i], 3251 FC_VPORT_LINKDOWN); 3252 continue; 3253 } 3254 if (vports[i]->fc_flag & FC_VPORT_NEEDS_INIT_VPI) { 3255 lpfc_issue_init_vpi(vports[i]); 3256 continue; 3257 } 3258 if (phba->link_flag & LS_NPIV_FAB_SUPPORTED) 3259 lpfc_initial_fdisc(vports[i]); 3260 else { 3261 lpfc_vport_set_state(vports[i], 3262 FC_VPORT_NO_FABRIC_SUPP); 3263 lpfc_printf_vlog(vports[i], KERN_ERR, 3264 LOG_TRACE_EVENT, 3265 "0259 No NPIV " 3266 "Fabric support\n"); 3267 } 3268 } 3269 } 3270 lpfc_destroy_vport_work_array(phba, vports); 3271 } 3272 3273 void 3274 lpfc_mbx_cmpl_reg_vfi(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq) 3275 { 3276 struct lpfc_dmabuf *dmabuf = mboxq->ctx_buf; 3277 struct lpfc_vport *vport = mboxq->vport; 3278 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 3279 3280 /* 3281 * VFI not supported for interface type 0, so ignore any mailbox 3282 * error (except VFI in use) and continue with the discovery. 3283 */ 3284 if (mboxq->u.mb.mbxStatus && 3285 (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) != 3286 LPFC_SLI_INTF_IF_TYPE_0) && 3287 mboxq->u.mb.mbxStatus != MBX_VFI_IN_USE) { 3288 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 3289 "2018 REG_VFI mbxStatus error x%x " 3290 "HBA state x%x\n", 3291 mboxq->u.mb.mbxStatus, vport->port_state); 3292 if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) { 3293 /* FLOGI failed, use loop map to make discovery list */ 3294 lpfc_disc_list_loopmap(vport); 3295 /* Start discovery */ 3296 lpfc_disc_start(vport); 3297 goto out_free_mem; 3298 } 3299 lpfc_vport_set_state(vport, FC_VPORT_FAILED); 3300 goto out_free_mem; 3301 } 3302 3303 /* If the VFI is already registered, there is nothing else to do 3304 * Unless this was a VFI update and we are in PT2PT mode, then 3305 * we should drop through to set the port state to ready. 3306 */ 3307 if (vport->fc_flag & FC_VFI_REGISTERED) 3308 if (!(phba->sli_rev == LPFC_SLI_REV4 && 3309 vport->fc_flag & FC_PT2PT)) 3310 goto out_free_mem; 3311 3312 /* The VPI is implicitly registered when the VFI is registered */ 3313 spin_lock_irq(shost->host_lock); 3314 vport->vpi_state |= LPFC_VPI_REGISTERED; 3315 vport->fc_flag |= FC_VFI_REGISTERED; 3316 vport->fc_flag &= ~FC_VPORT_NEEDS_REG_VPI; 3317 vport->fc_flag &= ~FC_VPORT_NEEDS_INIT_VPI; 3318 spin_unlock_irq(shost->host_lock); 3319 3320 /* In case SLI4 FC loopback test, we are ready */ 3321 if ((phba->sli_rev == LPFC_SLI_REV4) && 3322 (phba->link_flag & LS_LOOPBACK_MODE)) { 3323 phba->link_state = LPFC_HBA_READY; 3324 goto out_free_mem; 3325 } 3326 3327 lpfc_printf_vlog(vport, KERN_INFO, LOG_SLI, 3328 "3313 cmpl reg vfi port_state:%x fc_flag:%x myDid:%x " 3329 "alpacnt:%d LinkState:%x topology:%x\n", 3330 vport->port_state, vport->fc_flag, vport->fc_myDID, 3331 vport->phba->alpa_map[0], 3332 phba->link_state, phba->fc_topology); 3333 3334 if (vport->port_state == LPFC_FABRIC_CFG_LINK) { 3335 /* 3336 * For private loop or for NPort pt2pt, 3337 * just start discovery and we are done. 3338 */ 3339 if ((vport->fc_flag & FC_PT2PT) || 3340 ((phba->fc_topology == LPFC_TOPOLOGY_LOOP) && 3341 !(vport->fc_flag & FC_PUBLIC_LOOP))) { 3342 3343 /* Use loop map to make discovery list */ 3344 lpfc_disc_list_loopmap(vport); 3345 /* Start discovery */ 3346 if (vport->fc_flag & FC_PT2PT) 3347 vport->port_state = LPFC_VPORT_READY; 3348 else 3349 lpfc_disc_start(vport); 3350 } else { 3351 lpfc_start_fdiscs(phba); 3352 lpfc_do_scr_ns_plogi(phba, vport); 3353 } 3354 } 3355 3356 out_free_mem: 3357 mempool_free(mboxq, phba->mbox_mem_pool); 3358 if (dmabuf) { 3359 lpfc_mbuf_free(phba, dmabuf->virt, dmabuf->phys); 3360 kfree(dmabuf); 3361 } 3362 return; 3363 } 3364 3365 static void 3366 lpfc_mbx_cmpl_read_sparam(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 3367 { 3368 MAILBOX_t *mb = &pmb->u.mb; 3369 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *)pmb->ctx_buf; 3370 struct lpfc_vport *vport = pmb->vport; 3371 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 3372 struct serv_parm *sp = &vport->fc_sparam; 3373 uint32_t ed_tov; 3374 3375 /* Check for error */ 3376 if (mb->mbxStatus) { 3377 /* READ_SPARAM mbox error <mbxStatus> state <hba_state> */ 3378 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 3379 "0319 READ_SPARAM mbxStatus error x%x " 3380 "hba state x%x>\n", 3381 mb->mbxStatus, vport->port_state); 3382 lpfc_linkdown(phba); 3383 goto out; 3384 } 3385 3386 memcpy((uint8_t *) &vport->fc_sparam, (uint8_t *) mp->virt, 3387 sizeof (struct serv_parm)); 3388 3389 ed_tov = be32_to_cpu(sp->cmn.e_d_tov); 3390 if (sp->cmn.edtovResolution) /* E_D_TOV ticks are in nanoseconds */ 3391 ed_tov = (ed_tov + 999999) / 1000000; 3392 3393 phba->fc_edtov = ed_tov; 3394 phba->fc_ratov = (2 * ed_tov) / 1000; 3395 if (phba->fc_ratov < FF_DEF_RATOV) { 3396 /* RA_TOV should be atleast 10sec for initial flogi */ 3397 phba->fc_ratov = FF_DEF_RATOV; 3398 } 3399 3400 lpfc_update_vport_wwn(vport); 3401 fc_host_port_name(shost) = wwn_to_u64(vport->fc_portname.u.wwn); 3402 if (vport->port_type == LPFC_PHYSICAL_PORT) { 3403 memcpy(&phba->wwnn, &vport->fc_nodename, sizeof(phba->wwnn)); 3404 memcpy(&phba->wwpn, &vport->fc_portname, sizeof(phba->wwnn)); 3405 } 3406 3407 lpfc_mbuf_free(phba, mp->virt, mp->phys); 3408 kfree(mp); 3409 mempool_free(pmb, phba->mbox_mem_pool); 3410 3411 /* Check if sending the FLOGI is being deferred to after we get 3412 * up to date CSPs from MBX_READ_SPARAM. 3413 */ 3414 if (phba->hba_flag & HBA_DEFER_FLOGI) { 3415 lpfc_initial_flogi(vport); 3416 phba->hba_flag &= ~HBA_DEFER_FLOGI; 3417 } 3418 return; 3419 3420 out: 3421 pmb->ctx_buf = NULL; 3422 lpfc_mbuf_free(phba, mp->virt, mp->phys); 3423 kfree(mp); 3424 lpfc_issue_clear_la(phba, vport); 3425 mempool_free(pmb, phba->mbox_mem_pool); 3426 return; 3427 } 3428 3429 static void 3430 lpfc_mbx_process_link_up(struct lpfc_hba *phba, struct lpfc_mbx_read_top *la) 3431 { 3432 struct lpfc_vport *vport = phba->pport; 3433 LPFC_MBOXQ_t *sparam_mbox, *cfglink_mbox = NULL; 3434 struct Scsi_Host *shost; 3435 int i; 3436 struct lpfc_dmabuf *mp; 3437 int rc; 3438 struct fcf_record *fcf_record; 3439 uint32_t fc_flags = 0; 3440 unsigned long iflags; 3441 3442 spin_lock_irqsave(&phba->hbalock, iflags); 3443 phba->fc_linkspeed = bf_get(lpfc_mbx_read_top_link_spd, la); 3444 3445 if (!(phba->hba_flag & HBA_FCOE_MODE)) { 3446 switch (bf_get(lpfc_mbx_read_top_link_spd, la)) { 3447 case LPFC_LINK_SPEED_1GHZ: 3448 case LPFC_LINK_SPEED_2GHZ: 3449 case LPFC_LINK_SPEED_4GHZ: 3450 case LPFC_LINK_SPEED_8GHZ: 3451 case LPFC_LINK_SPEED_10GHZ: 3452 case LPFC_LINK_SPEED_16GHZ: 3453 case LPFC_LINK_SPEED_32GHZ: 3454 case LPFC_LINK_SPEED_64GHZ: 3455 case LPFC_LINK_SPEED_128GHZ: 3456 case LPFC_LINK_SPEED_256GHZ: 3457 break; 3458 default: 3459 phba->fc_linkspeed = LPFC_LINK_SPEED_UNKNOWN; 3460 break; 3461 } 3462 } 3463 3464 if (phba->fc_topology && 3465 phba->fc_topology != bf_get(lpfc_mbx_read_top_topology, la)) { 3466 lpfc_printf_log(phba, KERN_WARNING, LOG_SLI, 3467 "3314 Toplogy changed was 0x%x is 0x%x\n", 3468 phba->fc_topology, 3469 bf_get(lpfc_mbx_read_top_topology, la)); 3470 phba->fc_topology_changed = 1; 3471 } 3472 3473 phba->fc_topology = bf_get(lpfc_mbx_read_top_topology, la); 3474 phba->link_flag &= ~(LS_NPIV_FAB_SUPPORTED | LS_CT_VEN_RPA); 3475 3476 shost = lpfc_shost_from_vport(vport); 3477 if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) { 3478 phba->sli3_options &= ~LPFC_SLI3_NPIV_ENABLED; 3479 3480 /* if npiv is enabled and this adapter supports npiv log 3481 * a message that npiv is not supported in this topology 3482 */ 3483 if (phba->cfg_enable_npiv && phba->max_vpi) 3484 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT, 3485 "1309 Link Up Event npiv not supported in loop " 3486 "topology\n"); 3487 /* Get Loop Map information */ 3488 if (bf_get(lpfc_mbx_read_top_il, la)) 3489 fc_flags |= FC_LBIT; 3490 3491 vport->fc_myDID = bf_get(lpfc_mbx_read_top_alpa_granted, la); 3492 i = la->lilpBde64.tus.f.bdeSize; 3493 3494 if (i == 0) { 3495 phba->alpa_map[0] = 0; 3496 } else { 3497 if (vport->cfg_log_verbose & LOG_LINK_EVENT) { 3498 int numalpa, j, k; 3499 union { 3500 uint8_t pamap[16]; 3501 struct { 3502 uint32_t wd1; 3503 uint32_t wd2; 3504 uint32_t wd3; 3505 uint32_t wd4; 3506 } pa; 3507 } un; 3508 numalpa = phba->alpa_map[0]; 3509 j = 0; 3510 while (j < numalpa) { 3511 memset(un.pamap, 0, 16); 3512 for (k = 1; j < numalpa; k++) { 3513 un.pamap[k - 1] = 3514 phba->alpa_map[j + 1]; 3515 j++; 3516 if (k == 16) 3517 break; 3518 } 3519 /* Link Up Event ALPA map */ 3520 lpfc_printf_log(phba, 3521 KERN_WARNING, 3522 LOG_LINK_EVENT, 3523 "1304 Link Up Event " 3524 "ALPA map Data: x%x " 3525 "x%x x%x x%x\n", 3526 un.pa.wd1, un.pa.wd2, 3527 un.pa.wd3, un.pa.wd4); 3528 } 3529 } 3530 } 3531 } else { 3532 if (!(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)) { 3533 if (phba->max_vpi && phba->cfg_enable_npiv && 3534 (phba->sli_rev >= LPFC_SLI_REV3)) 3535 phba->sli3_options |= LPFC_SLI3_NPIV_ENABLED; 3536 } 3537 vport->fc_myDID = phba->fc_pref_DID; 3538 fc_flags |= FC_LBIT; 3539 } 3540 spin_unlock_irqrestore(&phba->hbalock, iflags); 3541 3542 if (fc_flags) { 3543 spin_lock_irqsave(shost->host_lock, iflags); 3544 vport->fc_flag |= fc_flags; 3545 spin_unlock_irqrestore(shost->host_lock, iflags); 3546 } 3547 3548 lpfc_linkup(phba); 3549 sparam_mbox = NULL; 3550 3551 sparam_mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 3552 if (!sparam_mbox) 3553 goto out; 3554 3555 rc = lpfc_read_sparam(phba, sparam_mbox, 0); 3556 if (rc) { 3557 mempool_free(sparam_mbox, phba->mbox_mem_pool); 3558 goto out; 3559 } 3560 sparam_mbox->vport = vport; 3561 sparam_mbox->mbox_cmpl = lpfc_mbx_cmpl_read_sparam; 3562 rc = lpfc_sli_issue_mbox(phba, sparam_mbox, MBX_NOWAIT); 3563 if (rc == MBX_NOT_FINISHED) { 3564 mp = (struct lpfc_dmabuf *)sparam_mbox->ctx_buf; 3565 lpfc_mbuf_free(phba, mp->virt, mp->phys); 3566 kfree(mp); 3567 mempool_free(sparam_mbox, phba->mbox_mem_pool); 3568 goto out; 3569 } 3570 3571 if (!(phba->hba_flag & HBA_FCOE_MODE)) { 3572 cfglink_mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 3573 if (!cfglink_mbox) 3574 goto out; 3575 vport->port_state = LPFC_LOCAL_CFG_LINK; 3576 lpfc_config_link(phba, cfglink_mbox); 3577 cfglink_mbox->vport = vport; 3578 cfglink_mbox->mbox_cmpl = lpfc_mbx_cmpl_local_config_link; 3579 rc = lpfc_sli_issue_mbox(phba, cfglink_mbox, MBX_NOWAIT); 3580 if (rc == MBX_NOT_FINISHED) { 3581 mempool_free(cfglink_mbox, phba->mbox_mem_pool); 3582 goto out; 3583 } 3584 } else { 3585 vport->port_state = LPFC_VPORT_UNKNOWN; 3586 /* 3587 * Add the driver's default FCF record at FCF index 0 now. This 3588 * is phase 1 implementation that support FCF index 0 and driver 3589 * defaults. 3590 */ 3591 if (!(phba->hba_flag & HBA_FIP_SUPPORT)) { 3592 fcf_record = kzalloc(sizeof(struct fcf_record), 3593 GFP_KERNEL); 3594 if (unlikely(!fcf_record)) { 3595 lpfc_printf_log(phba, KERN_ERR, 3596 LOG_TRACE_EVENT, 3597 "2554 Could not allocate memory for " 3598 "fcf record\n"); 3599 rc = -ENODEV; 3600 goto out; 3601 } 3602 3603 lpfc_sli4_build_dflt_fcf_record(phba, fcf_record, 3604 LPFC_FCOE_FCF_DEF_INDEX); 3605 rc = lpfc_sli4_add_fcf_record(phba, fcf_record); 3606 if (unlikely(rc)) { 3607 lpfc_printf_log(phba, KERN_ERR, 3608 LOG_TRACE_EVENT, 3609 "2013 Could not manually add FCF " 3610 "record 0, status %d\n", rc); 3611 rc = -ENODEV; 3612 kfree(fcf_record); 3613 goto out; 3614 } 3615 kfree(fcf_record); 3616 } 3617 /* 3618 * The driver is expected to do FIP/FCF. Call the port 3619 * and get the FCF Table. 3620 */ 3621 spin_lock_irqsave(&phba->hbalock, iflags); 3622 if (phba->hba_flag & FCF_TS_INPROG) { 3623 spin_unlock_irqrestore(&phba->hbalock, iflags); 3624 return; 3625 } 3626 /* This is the initial FCF discovery scan */ 3627 phba->fcf.fcf_flag |= FCF_INIT_DISC; 3628 spin_unlock_irqrestore(&phba->hbalock, iflags); 3629 lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY, 3630 "2778 Start FCF table scan at linkup\n"); 3631 rc = lpfc_sli4_fcf_scan_read_fcf_rec(phba, 3632 LPFC_FCOE_FCF_GET_FIRST); 3633 if (rc) { 3634 spin_lock_irqsave(&phba->hbalock, iflags); 3635 phba->fcf.fcf_flag &= ~FCF_INIT_DISC; 3636 spin_unlock_irqrestore(&phba->hbalock, iflags); 3637 goto out; 3638 } 3639 /* Reset FCF roundrobin bmask for new discovery */ 3640 lpfc_sli4_clear_fcf_rr_bmask(phba); 3641 } 3642 3643 /* Prepare for LINK up registrations */ 3644 memset(phba->os_host_name, 0, sizeof(phba->os_host_name)); 3645 scnprintf(phba->os_host_name, sizeof(phba->os_host_name), "%s", 3646 init_utsname()->nodename); 3647 return; 3648 out: 3649 lpfc_vport_set_state(vport, FC_VPORT_FAILED); 3650 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 3651 "0263 Discovery Mailbox error: state: 0x%x : x%px x%px\n", 3652 vport->port_state, sparam_mbox, cfglink_mbox); 3653 lpfc_issue_clear_la(phba, vport); 3654 return; 3655 } 3656 3657 static void 3658 lpfc_enable_la(struct lpfc_hba *phba) 3659 { 3660 uint32_t control; 3661 struct lpfc_sli *psli = &phba->sli; 3662 spin_lock_irq(&phba->hbalock); 3663 psli->sli_flag |= LPFC_PROCESS_LA; 3664 if (phba->sli_rev <= LPFC_SLI_REV3) { 3665 control = readl(phba->HCregaddr); 3666 control |= HC_LAINT_ENA; 3667 writel(control, phba->HCregaddr); 3668 readl(phba->HCregaddr); /* flush */ 3669 } 3670 spin_unlock_irq(&phba->hbalock); 3671 } 3672 3673 static void 3674 lpfc_mbx_issue_link_down(struct lpfc_hba *phba) 3675 { 3676 lpfc_linkdown(phba); 3677 lpfc_enable_la(phba); 3678 lpfc_unregister_unused_fcf(phba); 3679 /* turn on Link Attention interrupts - no CLEAR_LA needed */ 3680 } 3681 3682 3683 /* 3684 * This routine handles processing a READ_TOPOLOGY mailbox 3685 * command upon completion. It is setup in the LPFC_MBOXQ 3686 * as the completion routine when the command is 3687 * handed off to the SLI layer. SLI4 only. 3688 */ 3689 void 3690 lpfc_mbx_cmpl_read_topology(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 3691 { 3692 struct lpfc_vport *vport = pmb->vport; 3693 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 3694 struct lpfc_mbx_read_top *la; 3695 struct lpfc_sli_ring *pring; 3696 MAILBOX_t *mb = &pmb->u.mb; 3697 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *)(pmb->ctx_buf); 3698 uint8_t attn_type; 3699 unsigned long iflags; 3700 3701 /* Unblock ELS traffic */ 3702 pring = lpfc_phba_elsring(phba); 3703 if (pring) 3704 pring->flag &= ~LPFC_STOP_IOCB_EVENT; 3705 3706 /* Check for error */ 3707 if (mb->mbxStatus) { 3708 lpfc_printf_log(phba, KERN_INFO, LOG_LINK_EVENT, 3709 "1307 READ_LA mbox error x%x state x%x\n", 3710 mb->mbxStatus, vport->port_state); 3711 lpfc_mbx_issue_link_down(phba); 3712 phba->link_state = LPFC_HBA_ERROR; 3713 goto lpfc_mbx_cmpl_read_topology_free_mbuf; 3714 } 3715 3716 la = (struct lpfc_mbx_read_top *) &pmb->u.mb.un.varReadTop; 3717 attn_type = bf_get(lpfc_mbx_read_top_att_type, la); 3718 3719 memcpy(&phba->alpa_map[0], mp->virt, 128); 3720 3721 spin_lock_irqsave(shost->host_lock, iflags); 3722 if (bf_get(lpfc_mbx_read_top_pb, la)) 3723 vport->fc_flag |= FC_BYPASSED_MODE; 3724 else 3725 vport->fc_flag &= ~FC_BYPASSED_MODE; 3726 spin_unlock_irqrestore(shost->host_lock, iflags); 3727 3728 if (phba->fc_eventTag <= la->eventTag) { 3729 phba->fc_stat.LinkMultiEvent++; 3730 if (attn_type == LPFC_ATT_LINK_UP) 3731 if (phba->fc_eventTag != 0) 3732 lpfc_linkdown(phba); 3733 } 3734 3735 phba->fc_eventTag = la->eventTag; 3736 if (phba->sli_rev < LPFC_SLI_REV4) { 3737 spin_lock_irqsave(&phba->hbalock, iflags); 3738 if (bf_get(lpfc_mbx_read_top_mm, la)) 3739 phba->sli.sli_flag |= LPFC_MENLO_MAINT; 3740 else 3741 phba->sli.sli_flag &= ~LPFC_MENLO_MAINT; 3742 spin_unlock_irqrestore(&phba->hbalock, iflags); 3743 } 3744 3745 phba->link_events++; 3746 if ((attn_type == LPFC_ATT_LINK_UP) && 3747 !(phba->sli.sli_flag & LPFC_MENLO_MAINT)) { 3748 phba->fc_stat.LinkUp++; 3749 if (phba->link_flag & LS_LOOPBACK_MODE) { 3750 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT, 3751 "1306 Link Up Event in loop back mode " 3752 "x%x received Data: x%x x%x x%x x%x\n", 3753 la->eventTag, phba->fc_eventTag, 3754 bf_get(lpfc_mbx_read_top_alpa_granted, 3755 la), 3756 bf_get(lpfc_mbx_read_top_link_spd, la), 3757 phba->alpa_map[0]); 3758 } else { 3759 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT, 3760 "1303 Link Up Event x%x received " 3761 "Data: x%x x%x x%x x%x x%x x%x %d\n", 3762 la->eventTag, phba->fc_eventTag, 3763 bf_get(lpfc_mbx_read_top_alpa_granted, 3764 la), 3765 bf_get(lpfc_mbx_read_top_link_spd, la), 3766 phba->alpa_map[0], 3767 bf_get(lpfc_mbx_read_top_mm, la), 3768 bf_get(lpfc_mbx_read_top_fa, la), 3769 phba->wait_4_mlo_maint_flg); 3770 } 3771 lpfc_mbx_process_link_up(phba, la); 3772 3773 if (phba->cmf_active_mode != LPFC_CFG_OFF) 3774 lpfc_cmf_signal_init(phba); 3775 3776 } else if (attn_type == LPFC_ATT_LINK_DOWN || 3777 attn_type == LPFC_ATT_UNEXP_WWPN) { 3778 phba->fc_stat.LinkDown++; 3779 if (phba->link_flag & LS_LOOPBACK_MODE) 3780 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT, 3781 "1308 Link Down Event in loop back mode " 3782 "x%x received " 3783 "Data: x%x x%x x%x\n", 3784 la->eventTag, phba->fc_eventTag, 3785 phba->pport->port_state, vport->fc_flag); 3786 else if (attn_type == LPFC_ATT_UNEXP_WWPN) 3787 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT, 3788 "1313 Link Down Unexpected FA WWPN Event x%x " 3789 "received Data: x%x x%x x%x x%x x%x\n", 3790 la->eventTag, phba->fc_eventTag, 3791 phba->pport->port_state, vport->fc_flag, 3792 bf_get(lpfc_mbx_read_top_mm, la), 3793 bf_get(lpfc_mbx_read_top_fa, la)); 3794 else 3795 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT, 3796 "1305 Link Down Event x%x received " 3797 "Data: x%x x%x x%x x%x x%x\n", 3798 la->eventTag, phba->fc_eventTag, 3799 phba->pport->port_state, vport->fc_flag, 3800 bf_get(lpfc_mbx_read_top_mm, la), 3801 bf_get(lpfc_mbx_read_top_fa, la)); 3802 lpfc_mbx_issue_link_down(phba); 3803 } 3804 if (phba->sli.sli_flag & LPFC_MENLO_MAINT && 3805 attn_type == LPFC_ATT_LINK_UP) { 3806 if (phba->link_state != LPFC_LINK_DOWN) { 3807 phba->fc_stat.LinkDown++; 3808 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT, 3809 "1312 Link Down Event x%x received " 3810 "Data: x%x x%x x%x\n", 3811 la->eventTag, phba->fc_eventTag, 3812 phba->pport->port_state, vport->fc_flag); 3813 lpfc_mbx_issue_link_down(phba); 3814 } else 3815 lpfc_enable_la(phba); 3816 3817 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT, 3818 "1310 Menlo Maint Mode Link up Event x%x rcvd " 3819 "Data: x%x x%x x%x\n", 3820 la->eventTag, phba->fc_eventTag, 3821 phba->pport->port_state, vport->fc_flag); 3822 /* 3823 * The cmnd that triggered this will be waiting for this 3824 * signal. 3825 */ 3826 /* WAKEUP for MENLO_SET_MODE or MENLO_RESET command. */ 3827 if (phba->wait_4_mlo_maint_flg) { 3828 phba->wait_4_mlo_maint_flg = 0; 3829 wake_up_interruptible(&phba->wait_4_mlo_m_q); 3830 } 3831 } 3832 3833 if ((phba->sli_rev < LPFC_SLI_REV4) && 3834 bf_get(lpfc_mbx_read_top_fa, la)) { 3835 if (phba->sli.sli_flag & LPFC_MENLO_MAINT) 3836 lpfc_issue_clear_la(phba, vport); 3837 lpfc_printf_log(phba, KERN_INFO, LOG_LINK_EVENT, 3838 "1311 fa %d\n", 3839 bf_get(lpfc_mbx_read_top_fa, la)); 3840 } 3841 3842 lpfc_mbx_cmpl_read_topology_free_mbuf: 3843 lpfc_mbuf_free(phba, mp->virt, mp->phys); 3844 kfree(mp); 3845 mempool_free(pmb, phba->mbox_mem_pool); 3846 return; 3847 } 3848 3849 /* 3850 * This routine handles processing a REG_LOGIN mailbox 3851 * command upon completion. It is setup in the LPFC_MBOXQ 3852 * as the completion routine when the command is 3853 * handed off to the SLI layer. 3854 */ 3855 void 3856 lpfc_mbx_cmpl_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 3857 { 3858 struct lpfc_vport *vport = pmb->vport; 3859 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *)(pmb->ctx_buf); 3860 struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *)pmb->ctx_ndlp; 3861 3862 pmb->ctx_buf = NULL; 3863 pmb->ctx_ndlp = NULL; 3864 3865 lpfc_printf_vlog(vport, KERN_INFO, LOG_SLI | LOG_NODE | LOG_DISCOVERY, 3866 "0002 rpi:%x DID:%x flg:%x %d x%px\n", 3867 ndlp->nlp_rpi, ndlp->nlp_DID, ndlp->nlp_flag, 3868 kref_read(&ndlp->kref), 3869 ndlp); 3870 if (ndlp->nlp_flag & NLP_REG_LOGIN_SEND) 3871 ndlp->nlp_flag &= ~NLP_REG_LOGIN_SEND; 3872 3873 if (ndlp->nlp_flag & NLP_IGNR_REG_CMPL || 3874 ndlp->nlp_state != NLP_STE_REG_LOGIN_ISSUE) { 3875 /* We rcvd a rscn after issuing this 3876 * mbox reg login, we may have cycled 3877 * back through the state and be 3878 * back at reg login state so this 3879 * mbox needs to be ignored becase 3880 * there is another reg login in 3881 * process. 3882 */ 3883 spin_lock_irq(&ndlp->lock); 3884 ndlp->nlp_flag &= ~NLP_IGNR_REG_CMPL; 3885 spin_unlock_irq(&ndlp->lock); 3886 3887 /* 3888 * We cannot leave the RPI registered because 3889 * if we go thru discovery again for this ndlp 3890 * a subsequent REG_RPI will fail. 3891 */ 3892 ndlp->nlp_flag |= NLP_RPI_REGISTERED; 3893 lpfc_unreg_rpi(vport, ndlp); 3894 } 3895 3896 /* Call state machine */ 3897 lpfc_disc_state_machine(vport, ndlp, pmb, NLP_EVT_CMPL_REG_LOGIN); 3898 3899 lpfc_mbuf_free(phba, mp->virt, mp->phys); 3900 kfree(mp); 3901 mempool_free(pmb, phba->mbox_mem_pool); 3902 /* decrement the node reference count held for this callback 3903 * function. 3904 */ 3905 lpfc_nlp_put(ndlp); 3906 3907 return; 3908 } 3909 3910 static void 3911 lpfc_mbx_cmpl_unreg_vpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 3912 { 3913 MAILBOX_t *mb = &pmb->u.mb; 3914 struct lpfc_vport *vport = pmb->vport; 3915 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 3916 3917 switch (mb->mbxStatus) { 3918 case 0x0011: 3919 case 0x0020: 3920 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE, 3921 "0911 cmpl_unreg_vpi, mb status = 0x%x\n", 3922 mb->mbxStatus); 3923 break; 3924 /* If VPI is busy, reset the HBA */ 3925 case 0x9700: 3926 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 3927 "2798 Unreg_vpi failed vpi 0x%x, mb status = 0x%x\n", 3928 vport->vpi, mb->mbxStatus); 3929 if (!(phba->pport->load_flag & FC_UNLOADING)) 3930 lpfc_workq_post_event(phba, NULL, NULL, 3931 LPFC_EVT_RESET_HBA); 3932 } 3933 spin_lock_irq(shost->host_lock); 3934 vport->vpi_state &= ~LPFC_VPI_REGISTERED; 3935 vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI; 3936 spin_unlock_irq(shost->host_lock); 3937 mempool_free(pmb, phba->mbox_mem_pool); 3938 lpfc_cleanup_vports_rrqs(vport, NULL); 3939 /* 3940 * This shost reference might have been taken at the beginning of 3941 * lpfc_vport_delete() 3942 */ 3943 if ((vport->load_flag & FC_UNLOADING) && (vport != phba->pport)) 3944 scsi_host_put(shost); 3945 } 3946 3947 int 3948 lpfc_mbx_unreg_vpi(struct lpfc_vport *vport) 3949 { 3950 struct lpfc_hba *phba = vport->phba; 3951 LPFC_MBOXQ_t *mbox; 3952 int rc; 3953 3954 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 3955 if (!mbox) 3956 return 1; 3957 3958 lpfc_unreg_vpi(phba, vport->vpi, mbox); 3959 mbox->vport = vport; 3960 mbox->mbox_cmpl = lpfc_mbx_cmpl_unreg_vpi; 3961 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT); 3962 if (rc == MBX_NOT_FINISHED) { 3963 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 3964 "1800 Could not issue unreg_vpi\n"); 3965 mempool_free(mbox, phba->mbox_mem_pool); 3966 return rc; 3967 } 3968 return 0; 3969 } 3970 3971 static void 3972 lpfc_mbx_cmpl_reg_vpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 3973 { 3974 struct lpfc_vport *vport = pmb->vport; 3975 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 3976 MAILBOX_t *mb = &pmb->u.mb; 3977 3978 switch (mb->mbxStatus) { 3979 case 0x0011: 3980 case 0x9601: 3981 case 0x9602: 3982 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE, 3983 "0912 cmpl_reg_vpi, mb status = 0x%x\n", 3984 mb->mbxStatus); 3985 lpfc_vport_set_state(vport, FC_VPORT_FAILED); 3986 spin_lock_irq(shost->host_lock); 3987 vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP); 3988 spin_unlock_irq(shost->host_lock); 3989 vport->fc_myDID = 0; 3990 3991 if ((vport->cfg_enable_fc4_type == LPFC_ENABLE_BOTH) || 3992 (vport->cfg_enable_fc4_type == LPFC_ENABLE_NVME)) { 3993 if (phba->nvmet_support) 3994 lpfc_nvmet_update_targetport(phba); 3995 else 3996 lpfc_nvme_update_localport(vport); 3997 } 3998 goto out; 3999 } 4000 4001 spin_lock_irq(shost->host_lock); 4002 vport->vpi_state |= LPFC_VPI_REGISTERED; 4003 vport->fc_flag &= ~FC_VPORT_NEEDS_REG_VPI; 4004 spin_unlock_irq(shost->host_lock); 4005 vport->num_disc_nodes = 0; 4006 /* go thru NPR list and issue ELS PLOGIs */ 4007 if (vport->fc_npr_cnt) 4008 lpfc_els_disc_plogi(vport); 4009 4010 if (!vport->num_disc_nodes) { 4011 spin_lock_irq(shost->host_lock); 4012 vport->fc_flag &= ~FC_NDISC_ACTIVE; 4013 spin_unlock_irq(shost->host_lock); 4014 lpfc_can_disctmo(vport); 4015 } 4016 vport->port_state = LPFC_VPORT_READY; 4017 4018 out: 4019 mempool_free(pmb, phba->mbox_mem_pool); 4020 return; 4021 } 4022 4023 /** 4024 * lpfc_create_static_vport - Read HBA config region to create static vports. 4025 * @phba: pointer to lpfc hba data structure. 4026 * 4027 * This routine issue a DUMP mailbox command for config region 22 to get 4028 * the list of static vports to be created. The function create vports 4029 * based on the information returned from the HBA. 4030 **/ 4031 void 4032 lpfc_create_static_vport(struct lpfc_hba *phba) 4033 { 4034 LPFC_MBOXQ_t *pmb = NULL; 4035 MAILBOX_t *mb; 4036 struct static_vport_info *vport_info; 4037 int mbx_wait_rc = 0, i; 4038 struct fc_vport_identifiers vport_id; 4039 struct fc_vport *new_fc_vport; 4040 struct Scsi_Host *shost; 4041 struct lpfc_vport *vport; 4042 uint16_t offset = 0; 4043 uint8_t *vport_buff; 4044 struct lpfc_dmabuf *mp; 4045 uint32_t byte_count = 0; 4046 4047 pmb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 4048 if (!pmb) { 4049 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 4050 "0542 lpfc_create_static_vport failed to" 4051 " allocate mailbox memory\n"); 4052 return; 4053 } 4054 memset(pmb, 0, sizeof(LPFC_MBOXQ_t)); 4055 mb = &pmb->u.mb; 4056 4057 vport_info = kzalloc(sizeof(struct static_vport_info), GFP_KERNEL); 4058 if (!vport_info) { 4059 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 4060 "0543 lpfc_create_static_vport failed to" 4061 " allocate vport_info\n"); 4062 mempool_free(pmb, phba->mbox_mem_pool); 4063 return; 4064 } 4065 4066 vport_buff = (uint8_t *) vport_info; 4067 do { 4068 /* free dma buffer from previous round */ 4069 if (pmb->ctx_buf) { 4070 mp = (struct lpfc_dmabuf *)pmb->ctx_buf; 4071 lpfc_mbuf_free(phba, mp->virt, mp->phys); 4072 kfree(mp); 4073 } 4074 if (lpfc_dump_static_vport(phba, pmb, offset)) 4075 goto out; 4076 4077 pmb->vport = phba->pport; 4078 mbx_wait_rc = lpfc_sli_issue_mbox_wait(phba, pmb, 4079 LPFC_MBOX_TMO); 4080 4081 if ((mbx_wait_rc != MBX_SUCCESS) || mb->mbxStatus) { 4082 lpfc_printf_log(phba, KERN_WARNING, LOG_INIT, 4083 "0544 lpfc_create_static_vport failed to" 4084 " issue dump mailbox command ret 0x%x " 4085 "status 0x%x\n", 4086 mbx_wait_rc, mb->mbxStatus); 4087 goto out; 4088 } 4089 4090 if (phba->sli_rev == LPFC_SLI_REV4) { 4091 byte_count = pmb->u.mqe.un.mb_words[5]; 4092 mp = (struct lpfc_dmabuf *)pmb->ctx_buf; 4093 if (byte_count > sizeof(struct static_vport_info) - 4094 offset) 4095 byte_count = sizeof(struct static_vport_info) 4096 - offset; 4097 memcpy(vport_buff + offset, mp->virt, byte_count); 4098 offset += byte_count; 4099 } else { 4100 if (mb->un.varDmp.word_cnt > 4101 sizeof(struct static_vport_info) - offset) 4102 mb->un.varDmp.word_cnt = 4103 sizeof(struct static_vport_info) 4104 - offset; 4105 byte_count = mb->un.varDmp.word_cnt; 4106 lpfc_sli_pcimem_bcopy(((uint8_t *)mb) + DMP_RSP_OFFSET, 4107 vport_buff + offset, 4108 byte_count); 4109 4110 offset += byte_count; 4111 } 4112 4113 } while (byte_count && 4114 offset < sizeof(struct static_vport_info)); 4115 4116 4117 if ((le32_to_cpu(vport_info->signature) != VPORT_INFO_SIG) || 4118 ((le32_to_cpu(vport_info->rev) & VPORT_INFO_REV_MASK) 4119 != VPORT_INFO_REV)) { 4120 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 4121 "0545 lpfc_create_static_vport bad" 4122 " information header 0x%x 0x%x\n", 4123 le32_to_cpu(vport_info->signature), 4124 le32_to_cpu(vport_info->rev) & 4125 VPORT_INFO_REV_MASK); 4126 4127 goto out; 4128 } 4129 4130 shost = lpfc_shost_from_vport(phba->pport); 4131 4132 for (i = 0; i < MAX_STATIC_VPORT_COUNT; i++) { 4133 memset(&vport_id, 0, sizeof(vport_id)); 4134 vport_id.port_name = wwn_to_u64(vport_info->vport_list[i].wwpn); 4135 vport_id.node_name = wwn_to_u64(vport_info->vport_list[i].wwnn); 4136 if (!vport_id.port_name || !vport_id.node_name) 4137 continue; 4138 4139 vport_id.roles = FC_PORT_ROLE_FCP_INITIATOR; 4140 vport_id.vport_type = FC_PORTTYPE_NPIV; 4141 vport_id.disable = false; 4142 new_fc_vport = fc_vport_create(shost, 0, &vport_id); 4143 4144 if (!new_fc_vport) { 4145 lpfc_printf_log(phba, KERN_WARNING, LOG_INIT, 4146 "0546 lpfc_create_static_vport failed to" 4147 " create vport\n"); 4148 continue; 4149 } 4150 4151 vport = *(struct lpfc_vport **)new_fc_vport->dd_data; 4152 vport->vport_flag |= STATIC_VPORT; 4153 } 4154 4155 out: 4156 kfree(vport_info); 4157 if (mbx_wait_rc != MBX_TIMEOUT) { 4158 if (pmb->ctx_buf) { 4159 mp = (struct lpfc_dmabuf *)pmb->ctx_buf; 4160 lpfc_mbuf_free(phba, mp->virt, mp->phys); 4161 kfree(mp); 4162 } 4163 mempool_free(pmb, phba->mbox_mem_pool); 4164 } 4165 4166 return; 4167 } 4168 4169 /* 4170 * This routine handles processing a Fabric REG_LOGIN mailbox 4171 * command upon completion. It is setup in the LPFC_MBOXQ 4172 * as the completion routine when the command is 4173 * handed off to the SLI layer. 4174 */ 4175 void 4176 lpfc_mbx_cmpl_fabric_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 4177 { 4178 struct lpfc_vport *vport = pmb->vport; 4179 MAILBOX_t *mb = &pmb->u.mb; 4180 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *)(pmb->ctx_buf); 4181 struct lpfc_nodelist *ndlp; 4182 struct Scsi_Host *shost; 4183 4184 ndlp = (struct lpfc_nodelist *)pmb->ctx_ndlp; 4185 pmb->ctx_ndlp = NULL; 4186 pmb->ctx_buf = NULL; 4187 4188 if (mb->mbxStatus) { 4189 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 4190 "0258 Register Fabric login error: 0x%x\n", 4191 mb->mbxStatus); 4192 lpfc_mbuf_free(phba, mp->virt, mp->phys); 4193 kfree(mp); 4194 mempool_free(pmb, phba->mbox_mem_pool); 4195 4196 if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) { 4197 /* FLOGI failed, use loop map to make discovery list */ 4198 lpfc_disc_list_loopmap(vport); 4199 4200 /* Start discovery */ 4201 lpfc_disc_start(vport); 4202 /* Decrement the reference count to ndlp after the 4203 * reference to the ndlp are done. 4204 */ 4205 lpfc_nlp_put(ndlp); 4206 return; 4207 } 4208 4209 lpfc_vport_set_state(vport, FC_VPORT_FAILED); 4210 /* Decrement the reference count to ndlp after the reference 4211 * to the ndlp are done. 4212 */ 4213 lpfc_nlp_put(ndlp); 4214 return; 4215 } 4216 4217 if (phba->sli_rev < LPFC_SLI_REV4) 4218 ndlp->nlp_rpi = mb->un.varWords[0]; 4219 ndlp->nlp_flag |= NLP_RPI_REGISTERED; 4220 ndlp->nlp_type |= NLP_FABRIC; 4221 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE); 4222 4223 if (vport->port_state == LPFC_FABRIC_CFG_LINK) { 4224 /* when physical port receive logo donot start 4225 * vport discovery */ 4226 if (!(vport->fc_flag & FC_LOGO_RCVD_DID_CHNG)) 4227 lpfc_start_fdiscs(phba); 4228 else { 4229 shost = lpfc_shost_from_vport(vport); 4230 spin_lock_irq(shost->host_lock); 4231 vport->fc_flag &= ~FC_LOGO_RCVD_DID_CHNG ; 4232 spin_unlock_irq(shost->host_lock); 4233 } 4234 lpfc_do_scr_ns_plogi(phba, vport); 4235 } 4236 4237 lpfc_mbuf_free(phba, mp->virt, mp->phys); 4238 kfree(mp); 4239 mempool_free(pmb, phba->mbox_mem_pool); 4240 4241 /* Drop the reference count from the mbox at the end after 4242 * all the current reference to the ndlp have been done. 4243 */ 4244 lpfc_nlp_put(ndlp); 4245 return; 4246 } 4247 4248 /* 4249 * This routine will issue a GID_FT for each FC4 Type supported 4250 * by the driver. ALL GID_FTs must complete before discovery is started. 4251 */ 4252 int 4253 lpfc_issue_gidft(struct lpfc_vport *vport) 4254 { 4255 /* Good status, issue CT Request to NameServer */ 4256 if ((vport->cfg_enable_fc4_type == LPFC_ENABLE_BOTH) || 4257 (vport->cfg_enable_fc4_type == LPFC_ENABLE_FCP)) { 4258 if (lpfc_ns_cmd(vport, SLI_CTNS_GID_FT, 0, SLI_CTPT_FCP)) { 4259 /* Cannot issue NameServer FCP Query, so finish up 4260 * discovery 4261 */ 4262 lpfc_printf_vlog(vport, KERN_ERR, 4263 LOG_TRACE_EVENT, 4264 "0604 %s FC TYPE %x %s\n", 4265 "Failed to issue GID_FT to ", 4266 FC_TYPE_FCP, 4267 "Finishing discovery."); 4268 return 0; 4269 } 4270 vport->gidft_inp++; 4271 } 4272 4273 if ((vport->cfg_enable_fc4_type == LPFC_ENABLE_BOTH) || 4274 (vport->cfg_enable_fc4_type == LPFC_ENABLE_NVME)) { 4275 if (lpfc_ns_cmd(vport, SLI_CTNS_GID_FT, 0, SLI_CTPT_NVME)) { 4276 /* Cannot issue NameServer NVME Query, so finish up 4277 * discovery 4278 */ 4279 lpfc_printf_vlog(vport, KERN_ERR, 4280 LOG_TRACE_EVENT, 4281 "0605 %s FC_TYPE %x %s %d\n", 4282 "Failed to issue GID_FT to ", 4283 FC_TYPE_NVME, 4284 "Finishing discovery: gidftinp ", 4285 vport->gidft_inp); 4286 if (vport->gidft_inp == 0) 4287 return 0; 4288 } else 4289 vport->gidft_inp++; 4290 } 4291 return vport->gidft_inp; 4292 } 4293 4294 /** 4295 * lpfc_issue_gidpt - issue a GID_PT for all N_Ports 4296 * @vport: The virtual port for which this call is being executed. 4297 * 4298 * This routine will issue a GID_PT to get a list of all N_Ports 4299 * 4300 * Return value : 4301 * 0 - Failure to issue a GID_PT 4302 * 1 - GID_PT issued 4303 **/ 4304 int 4305 lpfc_issue_gidpt(struct lpfc_vport *vport) 4306 { 4307 /* Good status, issue CT Request to NameServer */ 4308 if (lpfc_ns_cmd(vport, SLI_CTNS_GID_PT, 0, GID_PT_N_PORT)) { 4309 /* Cannot issue NameServer FCP Query, so finish up 4310 * discovery 4311 */ 4312 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 4313 "0606 %s Port TYPE %x %s\n", 4314 "Failed to issue GID_PT to ", 4315 GID_PT_N_PORT, 4316 "Finishing discovery."); 4317 return 0; 4318 } 4319 vport->gidft_inp++; 4320 return 1; 4321 } 4322 4323 /* 4324 * This routine handles processing a NameServer REG_LOGIN mailbox 4325 * command upon completion. It is setup in the LPFC_MBOXQ 4326 * as the completion routine when the command is 4327 * handed off to the SLI layer. 4328 */ 4329 void 4330 lpfc_mbx_cmpl_ns_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 4331 { 4332 MAILBOX_t *mb = &pmb->u.mb; 4333 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *)(pmb->ctx_buf); 4334 struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *)pmb->ctx_ndlp; 4335 struct lpfc_vport *vport = pmb->vport; 4336 int rc; 4337 4338 pmb->ctx_buf = NULL; 4339 pmb->ctx_ndlp = NULL; 4340 vport->gidft_inp = 0; 4341 4342 if (mb->mbxStatus) { 4343 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 4344 "0260 Register NameServer error: 0x%x\n", 4345 mb->mbxStatus); 4346 4347 out: 4348 /* decrement the node reference count held for this 4349 * callback function. 4350 */ 4351 lpfc_nlp_put(ndlp); 4352 lpfc_mbuf_free(phba, mp->virt, mp->phys); 4353 kfree(mp); 4354 mempool_free(pmb, phba->mbox_mem_pool); 4355 4356 /* If the node is not registered with the scsi or nvme 4357 * transport, remove the fabric node. The failed reg_login 4358 * is terminal. 4359 */ 4360 if (!(ndlp->fc4_xpt_flags & (SCSI_XPT_REGD | NVME_XPT_REGD))) { 4361 spin_lock_irq(&ndlp->lock); 4362 ndlp->nlp_flag &= ~NLP_NPR_2B_DISC; 4363 spin_unlock_irq(&ndlp->lock); 4364 lpfc_nlp_not_used(ndlp); 4365 } 4366 4367 if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) { 4368 /* 4369 * RegLogin failed, use loop map to make discovery 4370 * list 4371 */ 4372 lpfc_disc_list_loopmap(vport); 4373 4374 /* Start discovery */ 4375 lpfc_disc_start(vport); 4376 return; 4377 } 4378 lpfc_vport_set_state(vport, FC_VPORT_FAILED); 4379 return; 4380 } 4381 4382 if (phba->sli_rev < LPFC_SLI_REV4) 4383 ndlp->nlp_rpi = mb->un.varWords[0]; 4384 ndlp->nlp_flag |= NLP_RPI_REGISTERED; 4385 ndlp->nlp_type |= NLP_FABRIC; 4386 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE); 4387 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE | LOG_DISCOVERY, 4388 "0003 rpi:%x DID:%x flg:%x %d x%px\n", 4389 ndlp->nlp_rpi, ndlp->nlp_DID, ndlp->nlp_flag, 4390 kref_read(&ndlp->kref), 4391 ndlp); 4392 4393 if (vport->port_state < LPFC_VPORT_READY) { 4394 /* Link up discovery requires Fabric registration. */ 4395 lpfc_ns_cmd(vport, SLI_CTNS_RNN_ID, 0, 0); 4396 lpfc_ns_cmd(vport, SLI_CTNS_RSNN_NN, 0, 0); 4397 lpfc_ns_cmd(vport, SLI_CTNS_RSPN_ID, 0, 0); 4398 lpfc_ns_cmd(vport, SLI_CTNS_RFT_ID, 0, 0); 4399 4400 if ((vport->cfg_enable_fc4_type == LPFC_ENABLE_BOTH) || 4401 (vport->cfg_enable_fc4_type == LPFC_ENABLE_FCP)) 4402 lpfc_ns_cmd(vport, SLI_CTNS_RFF_ID, 0, FC_TYPE_FCP); 4403 4404 if ((vport->cfg_enable_fc4_type == LPFC_ENABLE_BOTH) || 4405 (vport->cfg_enable_fc4_type == LPFC_ENABLE_NVME)) 4406 lpfc_ns_cmd(vport, SLI_CTNS_RFF_ID, 0, 4407 FC_TYPE_NVME); 4408 4409 /* Issue SCR just before NameServer GID_FT Query */ 4410 lpfc_issue_els_scr(vport, 0); 4411 4412 /* Link was bounced or a Fabric LOGO occurred. Start EDC 4413 * with initial FW values provided the congestion mode is 4414 * not off. Note that signals may or may not be supported 4415 * by the adapter but FPIN is provided by default for 1 4416 * or both missing signals support. 4417 */ 4418 if (phba->cmf_active_mode != LPFC_CFG_OFF) { 4419 phba->cgn_reg_fpin = phba->cgn_init_reg_fpin; 4420 phba->cgn_reg_signal = phba->cgn_init_reg_signal; 4421 rc = lpfc_issue_els_edc(vport, 0); 4422 lpfc_printf_log(phba, KERN_INFO, 4423 LOG_INIT | LOG_ELS | LOG_DISCOVERY, 4424 "4220 EDC issue error x%x, Data: x%x\n", 4425 rc, phba->cgn_init_reg_signal); 4426 } else { 4427 lpfc_issue_els_rdf(vport, 0); 4428 } 4429 } 4430 4431 vport->fc_ns_retry = 0; 4432 if (lpfc_issue_gidft(vport) == 0) 4433 goto out; 4434 4435 /* 4436 * At this point in time we may need to wait for multiple 4437 * SLI_CTNS_GID_FT CT commands to complete before we start discovery. 4438 * 4439 * decrement the node reference count held for this 4440 * callback function. 4441 */ 4442 lpfc_nlp_put(ndlp); 4443 lpfc_mbuf_free(phba, mp->virt, mp->phys); 4444 kfree(mp); 4445 mempool_free(pmb, phba->mbox_mem_pool); 4446 4447 return; 4448 } 4449 4450 /* 4451 * This routine handles processing a Fabric Controller REG_LOGIN mailbox 4452 * command upon completion. It is setup in the LPFC_MBOXQ 4453 * as the completion routine when the command is handed off to the SLI layer. 4454 */ 4455 void 4456 lpfc_mbx_cmpl_fc_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 4457 { 4458 struct lpfc_vport *vport = pmb->vport; 4459 MAILBOX_t *mb = &pmb->u.mb; 4460 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *)(pmb->ctx_buf); 4461 struct lpfc_nodelist *ndlp; 4462 4463 ndlp = (struct lpfc_nodelist *)pmb->ctx_ndlp; 4464 pmb->ctx_ndlp = NULL; 4465 pmb->ctx_buf = NULL; 4466 4467 if (mb->mbxStatus) { 4468 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 4469 "0933 %s: Register FC login error: 0x%x\n", 4470 __func__, mb->mbxStatus); 4471 goto out; 4472 } 4473 4474 lpfc_check_nlp_post_devloss(vport, ndlp); 4475 4476 if (phba->sli_rev < LPFC_SLI_REV4) 4477 ndlp->nlp_rpi = mb->un.varWords[0]; 4478 4479 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE, 4480 "0934 %s: Complete FC x%x RegLogin rpi x%x ste x%x\n", 4481 __func__, ndlp->nlp_DID, ndlp->nlp_rpi, 4482 ndlp->nlp_state); 4483 4484 ndlp->nlp_flag |= NLP_RPI_REGISTERED; 4485 ndlp->nlp_flag &= ~NLP_REG_LOGIN_SEND; 4486 ndlp->nlp_type |= NLP_FABRIC; 4487 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE); 4488 4489 out: 4490 lpfc_mbuf_free(phba, mp->virt, mp->phys); 4491 kfree(mp); 4492 mempool_free(pmb, phba->mbox_mem_pool); 4493 4494 /* Drop the reference count from the mbox at the end after 4495 * all the current reference to the ndlp have been done. 4496 */ 4497 lpfc_nlp_put(ndlp); 4498 } 4499 4500 static void 4501 lpfc_register_remote_port(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) 4502 { 4503 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 4504 struct fc_rport *rport; 4505 struct lpfc_rport_data *rdata; 4506 struct fc_rport_identifiers rport_ids; 4507 struct lpfc_hba *phba = vport->phba; 4508 unsigned long flags; 4509 4510 if (vport->cfg_enable_fc4_type == LPFC_ENABLE_NVME) 4511 return; 4512 4513 /* Remote port has reappeared. Re-register w/ FC transport */ 4514 rport_ids.node_name = wwn_to_u64(ndlp->nlp_nodename.u.wwn); 4515 rport_ids.port_name = wwn_to_u64(ndlp->nlp_portname.u.wwn); 4516 rport_ids.port_id = ndlp->nlp_DID; 4517 rport_ids.roles = FC_RPORT_ROLE_UNKNOWN; 4518 4519 4520 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT, 4521 "rport add: did:x%x flg:x%x type x%x", 4522 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type); 4523 4524 /* Don't add the remote port if unloading. */ 4525 if (vport->load_flag & FC_UNLOADING) 4526 return; 4527 4528 /* 4529 * Disassociate any older association between this ndlp and rport 4530 */ 4531 if (ndlp->rport) { 4532 rdata = ndlp->rport->dd_data; 4533 rdata->pnode = NULL; 4534 } 4535 4536 ndlp->rport = rport = fc_remote_port_add(shost, 0, &rport_ids); 4537 if (!rport) { 4538 dev_printk(KERN_WARNING, &phba->pcidev->dev, 4539 "Warning: fc_remote_port_add failed\n"); 4540 return; 4541 } 4542 4543 /* Successful port add. Complete initializing node data */ 4544 rport->maxframe_size = ndlp->nlp_maxframe; 4545 rport->supported_classes = ndlp->nlp_class_sup; 4546 rdata = rport->dd_data; 4547 rdata->pnode = lpfc_nlp_get(ndlp); 4548 if (!rdata->pnode) { 4549 dev_warn(&phba->pcidev->dev, 4550 "Warning - node ref failed. Unreg rport\n"); 4551 fc_remote_port_delete(rport); 4552 ndlp->rport = NULL; 4553 return; 4554 } 4555 4556 spin_lock_irqsave(&ndlp->lock, flags); 4557 ndlp->fc4_xpt_flags |= SCSI_XPT_REGD; 4558 spin_unlock_irqrestore(&ndlp->lock, flags); 4559 4560 if (ndlp->nlp_type & NLP_FCP_TARGET) 4561 rport_ids.roles |= FC_PORT_ROLE_FCP_TARGET; 4562 if (ndlp->nlp_type & NLP_FCP_INITIATOR) 4563 rport_ids.roles |= FC_PORT_ROLE_FCP_INITIATOR; 4564 if (ndlp->nlp_type & NLP_NVME_INITIATOR) 4565 rport_ids.roles |= FC_PORT_ROLE_NVME_INITIATOR; 4566 if (ndlp->nlp_type & NLP_NVME_TARGET) 4567 rport_ids.roles |= FC_PORT_ROLE_NVME_TARGET; 4568 if (ndlp->nlp_type & NLP_NVME_DISCOVERY) 4569 rport_ids.roles |= FC_PORT_ROLE_NVME_DISCOVERY; 4570 4571 if (rport_ids.roles != FC_RPORT_ROLE_UNKNOWN) 4572 fc_remote_port_rolechg(rport, rport_ids.roles); 4573 4574 lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_NODE, 4575 "3183 %s rport x%px DID x%x, role x%x refcnt %d\n", 4576 __func__, rport, rport->port_id, rport->roles, 4577 kref_read(&ndlp->kref)); 4578 4579 if ((rport->scsi_target_id != -1) && 4580 (rport->scsi_target_id < LPFC_MAX_TARGET)) { 4581 ndlp->nlp_sid = rport->scsi_target_id; 4582 } 4583 4584 return; 4585 } 4586 4587 static void 4588 lpfc_unregister_remote_port(struct lpfc_nodelist *ndlp) 4589 { 4590 struct fc_rport *rport = ndlp->rport; 4591 struct lpfc_vport *vport = ndlp->vport; 4592 4593 if (vport->cfg_enable_fc4_type == LPFC_ENABLE_NVME) 4594 return; 4595 4596 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT, 4597 "rport delete: did:x%x flg:x%x type x%x", 4598 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type); 4599 4600 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE, 4601 "3184 rport unregister x%06x, rport x%px " 4602 "xptflg x%x refcnt %d\n", 4603 ndlp->nlp_DID, rport, ndlp->fc4_xpt_flags, 4604 kref_read(&ndlp->kref)); 4605 4606 fc_remote_port_delete(rport); 4607 lpfc_nlp_put(ndlp); 4608 } 4609 4610 static void 4611 lpfc_nlp_counters(struct lpfc_vport *vport, int state, int count) 4612 { 4613 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 4614 unsigned long iflags; 4615 4616 spin_lock_irqsave(shost->host_lock, iflags); 4617 switch (state) { 4618 case NLP_STE_UNUSED_NODE: 4619 vport->fc_unused_cnt += count; 4620 break; 4621 case NLP_STE_PLOGI_ISSUE: 4622 vport->fc_plogi_cnt += count; 4623 break; 4624 case NLP_STE_ADISC_ISSUE: 4625 vport->fc_adisc_cnt += count; 4626 break; 4627 case NLP_STE_REG_LOGIN_ISSUE: 4628 vport->fc_reglogin_cnt += count; 4629 break; 4630 case NLP_STE_PRLI_ISSUE: 4631 vport->fc_prli_cnt += count; 4632 break; 4633 case NLP_STE_UNMAPPED_NODE: 4634 vport->fc_unmap_cnt += count; 4635 break; 4636 case NLP_STE_MAPPED_NODE: 4637 vport->fc_map_cnt += count; 4638 break; 4639 case NLP_STE_NPR_NODE: 4640 if (vport->fc_npr_cnt == 0 && count == -1) 4641 vport->fc_npr_cnt = 0; 4642 else 4643 vport->fc_npr_cnt += count; 4644 break; 4645 } 4646 spin_unlock_irqrestore(shost->host_lock, iflags); 4647 } 4648 4649 /* Register a node with backend if not already done */ 4650 void 4651 lpfc_nlp_reg_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) 4652 { 4653 unsigned long iflags; 4654 4655 lpfc_check_nlp_post_devloss(vport, ndlp); 4656 4657 spin_lock_irqsave(&ndlp->lock, iflags); 4658 if (ndlp->fc4_xpt_flags & NLP_XPT_REGD) { 4659 /* Already registered with backend, trigger rescan */ 4660 spin_unlock_irqrestore(&ndlp->lock, iflags); 4661 4662 if (ndlp->fc4_xpt_flags & NVME_XPT_REGD && 4663 ndlp->nlp_type & (NLP_NVME_TARGET | NLP_NVME_DISCOVERY)) { 4664 lpfc_nvme_rescan_port(vport, ndlp); 4665 } 4666 return; 4667 } 4668 4669 ndlp->fc4_xpt_flags |= NLP_XPT_REGD; 4670 spin_unlock_irqrestore(&ndlp->lock, iflags); 4671 4672 if (lpfc_valid_xpt_node(ndlp)) { 4673 vport->phba->nport_event_cnt++; 4674 /* 4675 * Tell the fc transport about the port, if we haven't 4676 * already. If we have, and it's a scsi entity, be 4677 */ 4678 lpfc_register_remote_port(vport, ndlp); 4679 } 4680 4681 /* We are done if we do not have any NVME remote node */ 4682 if (!(ndlp->nlp_fc4_type & NLP_FC4_NVME)) 4683 return; 4684 4685 /* Notify the NVME transport of this new rport. */ 4686 if (vport->phba->sli_rev >= LPFC_SLI_REV4 && 4687 ndlp->nlp_fc4_type & NLP_FC4_NVME) { 4688 if (vport->phba->nvmet_support == 0) { 4689 /* Register this rport with the transport. 4690 * Only NVME Target Rports are registered with 4691 * the transport. 4692 */ 4693 if (ndlp->nlp_type & NLP_NVME_TARGET) { 4694 vport->phba->nport_event_cnt++; 4695 lpfc_nvme_register_port(vport, ndlp); 4696 } 4697 } else { 4698 /* Just take an NDLP ref count since the 4699 * target does not register rports. 4700 */ 4701 lpfc_nlp_get(ndlp); 4702 } 4703 } 4704 } 4705 4706 /* Unregister a node with backend if not already done */ 4707 void 4708 lpfc_nlp_unreg_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) 4709 { 4710 unsigned long iflags; 4711 4712 spin_lock_irqsave(&ndlp->lock, iflags); 4713 if (!(ndlp->fc4_xpt_flags & NLP_XPT_REGD)) { 4714 spin_unlock_irqrestore(&ndlp->lock, iflags); 4715 return; 4716 } 4717 4718 ndlp->fc4_xpt_flags &= ~NLP_XPT_REGD; 4719 spin_unlock_irqrestore(&ndlp->lock, iflags); 4720 4721 if (ndlp->rport && 4722 ndlp->fc4_xpt_flags & SCSI_XPT_REGD) { 4723 vport->phba->nport_event_cnt++; 4724 lpfc_unregister_remote_port(ndlp); 4725 } 4726 4727 if (ndlp->fc4_xpt_flags & NVME_XPT_REGD) { 4728 vport->phba->nport_event_cnt++; 4729 if (vport->phba->nvmet_support == 0) { 4730 /* Start devloss if target. */ 4731 if (ndlp->nlp_type & NLP_NVME_TARGET) 4732 lpfc_nvme_unregister_port(vport, ndlp); 4733 } else { 4734 /* NVMET has no upcall. */ 4735 lpfc_nlp_put(ndlp); 4736 } 4737 } 4738 4739 } 4740 4741 /* 4742 * Adisc state change handling 4743 */ 4744 static void 4745 lpfc_handle_adisc_state(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 4746 int new_state) 4747 { 4748 switch (new_state) { 4749 /* 4750 * Any state to ADISC_ISSUE 4751 * Do nothing, adisc cmpl handling will trigger state changes 4752 */ 4753 case NLP_STE_ADISC_ISSUE: 4754 break; 4755 4756 /* 4757 * ADISC_ISSUE to mapped states 4758 * Trigger a registration with backend, it will be nop if 4759 * already registered 4760 */ 4761 case NLP_STE_UNMAPPED_NODE: 4762 ndlp->nlp_type |= NLP_FC_NODE; 4763 fallthrough; 4764 case NLP_STE_MAPPED_NODE: 4765 ndlp->nlp_flag &= ~NLP_NODEV_REMOVE; 4766 lpfc_nlp_reg_node(vport, ndlp); 4767 break; 4768 4769 /* 4770 * ADISC_ISSUE to non-mapped states 4771 * We are moving from ADISC_ISSUE to a non-mapped state because 4772 * ADISC failed, we would have skipped unregistering with 4773 * backend, attempt it now 4774 */ 4775 case NLP_STE_NPR_NODE: 4776 ndlp->nlp_flag &= ~NLP_RCV_PLOGI; 4777 fallthrough; 4778 default: 4779 lpfc_nlp_unreg_node(vport, ndlp); 4780 break; 4781 } 4782 4783 } 4784 4785 static void 4786 lpfc_nlp_state_cleanup(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 4787 int old_state, int new_state) 4788 { 4789 /* Trap ADISC changes here */ 4790 if (new_state == NLP_STE_ADISC_ISSUE || 4791 old_state == NLP_STE_ADISC_ISSUE) { 4792 lpfc_handle_adisc_state(vport, ndlp, new_state); 4793 return; 4794 } 4795 4796 if (new_state == NLP_STE_UNMAPPED_NODE) { 4797 ndlp->nlp_flag &= ~NLP_NODEV_REMOVE; 4798 ndlp->nlp_type |= NLP_FC_NODE; 4799 } 4800 if (new_state == NLP_STE_MAPPED_NODE) 4801 ndlp->nlp_flag &= ~NLP_NODEV_REMOVE; 4802 if (new_state == NLP_STE_NPR_NODE) 4803 ndlp->nlp_flag &= ~NLP_RCV_PLOGI; 4804 4805 /* Reg/Unreg for FCP and NVME Transport interface */ 4806 if ((old_state == NLP_STE_MAPPED_NODE || 4807 old_state == NLP_STE_UNMAPPED_NODE)) { 4808 /* For nodes marked for ADISC, Handle unreg in ADISC cmpl 4809 * if linkup. In linkdown do unreg_node 4810 */ 4811 if (!(ndlp->nlp_flag & NLP_NPR_ADISC) || 4812 !lpfc_is_link_up(vport->phba)) 4813 lpfc_nlp_unreg_node(vport, ndlp); 4814 } 4815 4816 if (new_state == NLP_STE_MAPPED_NODE || 4817 new_state == NLP_STE_UNMAPPED_NODE) 4818 lpfc_nlp_reg_node(vport, ndlp); 4819 4820 if ((new_state == NLP_STE_MAPPED_NODE) && 4821 (vport->stat_data_enabled)) { 4822 /* 4823 * A new target is discovered, if there is no buffer for 4824 * statistical data collection allocate buffer. 4825 */ 4826 ndlp->lat_data = kcalloc(LPFC_MAX_BUCKET_COUNT, 4827 sizeof(struct lpfc_scsicmd_bkt), 4828 GFP_KERNEL); 4829 4830 if (!ndlp->lat_data) 4831 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 4832 "0286 lpfc_nlp_state_cleanup failed to " 4833 "allocate statistical data buffer DID " 4834 "0x%x\n", ndlp->nlp_DID); 4835 } 4836 /* 4837 * If the node just added to Mapped list was an FCP target, 4838 * but the remote port registration failed or assigned a target 4839 * id outside the presentable range - move the node to the 4840 * Unmapped List. 4841 */ 4842 if ((new_state == NLP_STE_MAPPED_NODE) && 4843 (ndlp->nlp_type & NLP_FCP_TARGET) && 4844 (!ndlp->rport || 4845 ndlp->rport->scsi_target_id == -1 || 4846 ndlp->rport->scsi_target_id >= LPFC_MAX_TARGET)) { 4847 spin_lock_irq(&ndlp->lock); 4848 ndlp->nlp_flag |= NLP_TGT_NO_SCSIID; 4849 spin_unlock_irq(&ndlp->lock); 4850 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE); 4851 } 4852 } 4853 4854 static char * 4855 lpfc_nlp_state_name(char *buffer, size_t size, int state) 4856 { 4857 static char *states[] = { 4858 [NLP_STE_UNUSED_NODE] = "UNUSED", 4859 [NLP_STE_PLOGI_ISSUE] = "PLOGI", 4860 [NLP_STE_ADISC_ISSUE] = "ADISC", 4861 [NLP_STE_REG_LOGIN_ISSUE] = "REGLOGIN", 4862 [NLP_STE_PRLI_ISSUE] = "PRLI", 4863 [NLP_STE_LOGO_ISSUE] = "LOGO", 4864 [NLP_STE_UNMAPPED_NODE] = "UNMAPPED", 4865 [NLP_STE_MAPPED_NODE] = "MAPPED", 4866 [NLP_STE_NPR_NODE] = "NPR", 4867 }; 4868 4869 if (state < NLP_STE_MAX_STATE && states[state]) 4870 strlcpy(buffer, states[state], size); 4871 else 4872 snprintf(buffer, size, "unknown (%d)", state); 4873 return buffer; 4874 } 4875 4876 void 4877 lpfc_nlp_set_state(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 4878 int state) 4879 { 4880 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 4881 int old_state = ndlp->nlp_state; 4882 int node_dropped = ndlp->nlp_flag & NLP_DROPPED; 4883 char name1[16], name2[16]; 4884 4885 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE, 4886 "0904 NPort state transition x%06x, %s -> %s\n", 4887 ndlp->nlp_DID, 4888 lpfc_nlp_state_name(name1, sizeof(name1), old_state), 4889 lpfc_nlp_state_name(name2, sizeof(name2), state)); 4890 4891 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE, 4892 "node statechg did:x%x old:%d ste:%d", 4893 ndlp->nlp_DID, old_state, state); 4894 4895 if (node_dropped && old_state == NLP_STE_UNUSED_NODE && 4896 state != NLP_STE_UNUSED_NODE) { 4897 ndlp->nlp_flag &= ~NLP_DROPPED; 4898 lpfc_nlp_get(ndlp); 4899 } 4900 4901 if (old_state == NLP_STE_NPR_NODE && 4902 state != NLP_STE_NPR_NODE) 4903 lpfc_cancel_retry_delay_tmo(vport, ndlp); 4904 if (old_state == NLP_STE_UNMAPPED_NODE) { 4905 ndlp->nlp_flag &= ~NLP_TGT_NO_SCSIID; 4906 ndlp->nlp_type &= ~NLP_FC_NODE; 4907 } 4908 4909 if (list_empty(&ndlp->nlp_listp)) { 4910 spin_lock_irq(shost->host_lock); 4911 list_add_tail(&ndlp->nlp_listp, &vport->fc_nodes); 4912 spin_unlock_irq(shost->host_lock); 4913 } else if (old_state) 4914 lpfc_nlp_counters(vport, old_state, -1); 4915 4916 ndlp->nlp_state = state; 4917 lpfc_nlp_counters(vport, state, 1); 4918 lpfc_nlp_state_cleanup(vport, ndlp, old_state, state); 4919 } 4920 4921 void 4922 lpfc_enqueue_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) 4923 { 4924 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 4925 4926 if (list_empty(&ndlp->nlp_listp)) { 4927 spin_lock_irq(shost->host_lock); 4928 list_add_tail(&ndlp->nlp_listp, &vport->fc_nodes); 4929 spin_unlock_irq(shost->host_lock); 4930 } 4931 } 4932 4933 void 4934 lpfc_dequeue_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) 4935 { 4936 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 4937 4938 lpfc_cancel_retry_delay_tmo(vport, ndlp); 4939 if (ndlp->nlp_state && !list_empty(&ndlp->nlp_listp)) 4940 lpfc_nlp_counters(vport, ndlp->nlp_state, -1); 4941 spin_lock_irq(shost->host_lock); 4942 list_del_init(&ndlp->nlp_listp); 4943 spin_unlock_irq(shost->host_lock); 4944 lpfc_nlp_state_cleanup(vport, ndlp, ndlp->nlp_state, 4945 NLP_STE_UNUSED_NODE); 4946 } 4947 4948 /** 4949 * lpfc_initialize_node - Initialize all fields of node object 4950 * @vport: Pointer to Virtual Port object. 4951 * @ndlp: Pointer to FC node object. 4952 * @did: FC_ID of the node. 4953 * 4954 * This function is always called when node object need to be initialized. 4955 * It initializes all the fields of the node object. Although the reference 4956 * to phba from @ndlp can be obtained indirectly through it's reference to 4957 * @vport, a direct reference to phba is taken here by @ndlp. This is due 4958 * to the life-span of the @ndlp might go beyond the existence of @vport as 4959 * the final release of ndlp is determined by its reference count. And, the 4960 * operation on @ndlp needs the reference to phba. 4961 **/ 4962 static inline void 4963 lpfc_initialize_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 4964 uint32_t did) 4965 { 4966 INIT_LIST_HEAD(&ndlp->els_retry_evt.evt_listp); 4967 INIT_LIST_HEAD(&ndlp->dev_loss_evt.evt_listp); 4968 timer_setup(&ndlp->nlp_delayfunc, lpfc_els_retry_delay, 0); 4969 INIT_LIST_HEAD(&ndlp->recovery_evt.evt_listp); 4970 4971 ndlp->nlp_DID = did; 4972 ndlp->vport = vport; 4973 ndlp->phba = vport->phba; 4974 ndlp->nlp_sid = NLP_NO_SID; 4975 ndlp->nlp_fc4_type = NLP_FC4_NONE; 4976 kref_init(&ndlp->kref); 4977 atomic_set(&ndlp->cmd_pending, 0); 4978 ndlp->cmd_qdepth = vport->cfg_tgt_queue_depth; 4979 ndlp->nlp_defer_did = NLP_EVT_NOTHING_PENDING; 4980 } 4981 4982 void 4983 lpfc_drop_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) 4984 { 4985 /* 4986 * Use of lpfc_drop_node and UNUSED list: lpfc_drop_node should 4987 * be used if we wish to issue the "last" lpfc_nlp_put() to remove 4988 * the ndlp from the vport. The ndlp marked as UNUSED on the list 4989 * until ALL other outstanding threads have completed. We check 4990 * that the ndlp not already in the UNUSED state before we proceed. 4991 */ 4992 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE) 4993 return; 4994 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNUSED_NODE); 4995 ndlp->nlp_flag |= NLP_DROPPED; 4996 if (vport->phba->sli_rev == LPFC_SLI_REV4) { 4997 lpfc_cleanup_vports_rrqs(vport, ndlp); 4998 lpfc_unreg_rpi(vport, ndlp); 4999 } 5000 5001 lpfc_nlp_put(ndlp); 5002 return; 5003 } 5004 5005 /* 5006 * Start / ReStart rescue timer for Discovery / RSCN handling 5007 */ 5008 void 5009 lpfc_set_disctmo(struct lpfc_vport *vport) 5010 { 5011 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 5012 struct lpfc_hba *phba = vport->phba; 5013 uint32_t tmo; 5014 5015 if (vport->port_state == LPFC_LOCAL_CFG_LINK) { 5016 /* For FAN, timeout should be greater than edtov */ 5017 tmo = (((phba->fc_edtov + 999) / 1000) + 1); 5018 } else { 5019 /* Normal discovery timeout should be > than ELS/CT timeout 5020 * FC spec states we need 3 * ratov for CT requests 5021 */ 5022 tmo = ((phba->fc_ratov * 3) + 3); 5023 } 5024 5025 5026 if (!timer_pending(&vport->fc_disctmo)) { 5027 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, 5028 "set disc timer: tmo:x%x state:x%x flg:x%x", 5029 tmo, vport->port_state, vport->fc_flag); 5030 } 5031 5032 mod_timer(&vport->fc_disctmo, jiffies + msecs_to_jiffies(1000 * tmo)); 5033 spin_lock_irq(shost->host_lock); 5034 vport->fc_flag |= FC_DISC_TMO; 5035 spin_unlock_irq(shost->host_lock); 5036 5037 /* Start Discovery Timer state <hba_state> */ 5038 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, 5039 "0247 Start Discovery Timer state x%x " 5040 "Data: x%x x%lx x%x x%x\n", 5041 vport->port_state, tmo, 5042 (unsigned long)&vport->fc_disctmo, vport->fc_plogi_cnt, 5043 vport->fc_adisc_cnt); 5044 5045 return; 5046 } 5047 5048 /* 5049 * Cancel rescue timer for Discovery / RSCN handling 5050 */ 5051 int 5052 lpfc_can_disctmo(struct lpfc_vport *vport) 5053 { 5054 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 5055 unsigned long iflags; 5056 5057 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, 5058 "can disc timer: state:x%x rtry:x%x flg:x%x", 5059 vport->port_state, vport->fc_ns_retry, vport->fc_flag); 5060 5061 /* Turn off discovery timer if its running */ 5062 if (vport->fc_flag & FC_DISC_TMO) { 5063 spin_lock_irqsave(shost->host_lock, iflags); 5064 vport->fc_flag &= ~FC_DISC_TMO; 5065 spin_unlock_irqrestore(shost->host_lock, iflags); 5066 del_timer_sync(&vport->fc_disctmo); 5067 spin_lock_irqsave(&vport->work_port_lock, iflags); 5068 vport->work_port_events &= ~WORKER_DISC_TMO; 5069 spin_unlock_irqrestore(&vport->work_port_lock, iflags); 5070 } 5071 5072 /* Cancel Discovery Timer state <hba_state> */ 5073 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, 5074 "0248 Cancel Discovery Timer state x%x " 5075 "Data: x%x x%x x%x\n", 5076 vport->port_state, vport->fc_flag, 5077 vport->fc_plogi_cnt, vport->fc_adisc_cnt); 5078 return 0; 5079 } 5080 5081 /* 5082 * Check specified ring for outstanding IOCB on the SLI queue 5083 * Return true if iocb matches the specified nport 5084 */ 5085 int 5086 lpfc_check_sli_ndlp(struct lpfc_hba *phba, 5087 struct lpfc_sli_ring *pring, 5088 struct lpfc_iocbq *iocb, 5089 struct lpfc_nodelist *ndlp) 5090 { 5091 IOCB_t *icmd = &iocb->iocb; 5092 struct lpfc_vport *vport = ndlp->vport; 5093 5094 if (iocb->vport != vport) 5095 return 0; 5096 5097 if (pring->ringno == LPFC_ELS_RING) { 5098 switch (icmd->ulpCommand) { 5099 case CMD_GEN_REQUEST64_CR: 5100 if (iocb->context_un.ndlp == ndlp) 5101 return 1; 5102 fallthrough; 5103 case CMD_ELS_REQUEST64_CR: 5104 if (icmd->un.elsreq64.remoteID == ndlp->nlp_DID) 5105 return 1; 5106 fallthrough; 5107 case CMD_XMIT_ELS_RSP64_CX: 5108 if (iocb->context1 == (uint8_t *) ndlp) 5109 return 1; 5110 } 5111 } else if (pring->ringno == LPFC_FCP_RING) { 5112 /* Skip match check if waiting to relogin to FCP target */ 5113 if ((ndlp->nlp_type & NLP_FCP_TARGET) && 5114 (ndlp->nlp_flag & NLP_DELAY_TMO)) { 5115 return 0; 5116 } 5117 if (icmd->ulpContext == (volatile ushort)ndlp->nlp_rpi) { 5118 return 1; 5119 } 5120 } 5121 return 0; 5122 } 5123 5124 static void 5125 __lpfc_dequeue_nport_iocbs(struct lpfc_hba *phba, 5126 struct lpfc_nodelist *ndlp, struct lpfc_sli_ring *pring, 5127 struct list_head *dequeue_list) 5128 { 5129 struct lpfc_iocbq *iocb, *next_iocb; 5130 5131 list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) { 5132 /* Check to see if iocb matches the nport */ 5133 if (lpfc_check_sli_ndlp(phba, pring, iocb, ndlp)) 5134 /* match, dequeue */ 5135 list_move_tail(&iocb->list, dequeue_list); 5136 } 5137 } 5138 5139 static void 5140 lpfc_sli3_dequeue_nport_iocbs(struct lpfc_hba *phba, 5141 struct lpfc_nodelist *ndlp, struct list_head *dequeue_list) 5142 { 5143 struct lpfc_sli *psli = &phba->sli; 5144 uint32_t i; 5145 5146 spin_lock_irq(&phba->hbalock); 5147 for (i = 0; i < psli->num_rings; i++) 5148 __lpfc_dequeue_nport_iocbs(phba, ndlp, &psli->sli3_ring[i], 5149 dequeue_list); 5150 spin_unlock_irq(&phba->hbalock); 5151 } 5152 5153 static void 5154 lpfc_sli4_dequeue_nport_iocbs(struct lpfc_hba *phba, 5155 struct lpfc_nodelist *ndlp, struct list_head *dequeue_list) 5156 { 5157 struct lpfc_sli_ring *pring; 5158 struct lpfc_queue *qp = NULL; 5159 5160 spin_lock_irq(&phba->hbalock); 5161 list_for_each_entry(qp, &phba->sli4_hba.lpfc_wq_list, wq_list) { 5162 pring = qp->pring; 5163 if (!pring) 5164 continue; 5165 spin_lock(&pring->ring_lock); 5166 __lpfc_dequeue_nport_iocbs(phba, ndlp, pring, dequeue_list); 5167 spin_unlock(&pring->ring_lock); 5168 } 5169 spin_unlock_irq(&phba->hbalock); 5170 } 5171 5172 /* 5173 * Free resources / clean up outstanding I/Os 5174 * associated with nlp_rpi in the LPFC_NODELIST entry. 5175 */ 5176 static int 5177 lpfc_no_rpi(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp) 5178 { 5179 LIST_HEAD(completions); 5180 5181 lpfc_fabric_abort_nport(ndlp); 5182 5183 /* 5184 * Everything that matches on txcmplq will be returned 5185 * by firmware with a no rpi error. 5186 */ 5187 if (ndlp->nlp_flag & NLP_RPI_REGISTERED) { 5188 if (phba->sli_rev != LPFC_SLI_REV4) 5189 lpfc_sli3_dequeue_nport_iocbs(phba, ndlp, &completions); 5190 else 5191 lpfc_sli4_dequeue_nport_iocbs(phba, ndlp, &completions); 5192 } 5193 5194 /* Cancel all the IOCBs from the completions list */ 5195 lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT, 5196 IOERR_SLI_ABORTED); 5197 5198 return 0; 5199 } 5200 5201 /** 5202 * lpfc_nlp_logo_unreg - Unreg mailbox completion handler before LOGO 5203 * @phba: Pointer to HBA context object. 5204 * @pmb: Pointer to mailbox object. 5205 * 5206 * This function will issue an ELS LOGO command after completing 5207 * the UNREG_RPI. 5208 **/ 5209 static void 5210 lpfc_nlp_logo_unreg(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 5211 { 5212 struct lpfc_vport *vport = pmb->vport; 5213 struct lpfc_nodelist *ndlp; 5214 5215 ndlp = (struct lpfc_nodelist *)(pmb->ctx_ndlp); 5216 if (!ndlp) 5217 return; 5218 lpfc_issue_els_logo(vport, ndlp, 0); 5219 mempool_free(pmb, phba->mbox_mem_pool); 5220 5221 /* Check to see if there are any deferred events to process */ 5222 if ((ndlp->nlp_flag & NLP_UNREG_INP) && 5223 (ndlp->nlp_defer_did != NLP_EVT_NOTHING_PENDING)) { 5224 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, 5225 "1434 UNREG cmpl deferred logo x%x " 5226 "on NPort x%x Data: x%x x%px\n", 5227 ndlp->nlp_rpi, ndlp->nlp_DID, 5228 ndlp->nlp_defer_did, ndlp); 5229 5230 ndlp->nlp_flag &= ~NLP_UNREG_INP; 5231 ndlp->nlp_defer_did = NLP_EVT_NOTHING_PENDING; 5232 lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0); 5233 } else { 5234 /* NLP_RELEASE_RPI is only set for SLI4 ports. */ 5235 if (ndlp->nlp_flag & NLP_RELEASE_RPI) { 5236 lpfc_sli4_free_rpi(vport->phba, ndlp->nlp_rpi); 5237 spin_lock_irq(&ndlp->lock); 5238 ndlp->nlp_flag &= ~NLP_RELEASE_RPI; 5239 ndlp->nlp_rpi = LPFC_RPI_ALLOC_ERROR; 5240 spin_unlock_irq(&ndlp->lock); 5241 } 5242 spin_lock_irq(&ndlp->lock); 5243 ndlp->nlp_flag &= ~NLP_UNREG_INP; 5244 spin_unlock_irq(&ndlp->lock); 5245 } 5246 } 5247 5248 /* 5249 * Sets the mailbox completion handler to be used for the 5250 * unreg_rpi command. The handler varies based on the state of 5251 * the port and what will be happening to the rpi next. 5252 */ 5253 static void 5254 lpfc_set_unreg_login_mbx_cmpl(struct lpfc_hba *phba, struct lpfc_vport *vport, 5255 struct lpfc_nodelist *ndlp, LPFC_MBOXQ_t *mbox) 5256 { 5257 unsigned long iflags; 5258 5259 /* Driver always gets a reference on the mailbox job 5260 * in support of async jobs. 5261 */ 5262 mbox->ctx_ndlp = lpfc_nlp_get(ndlp); 5263 if (!mbox->ctx_ndlp) 5264 return; 5265 5266 if (ndlp->nlp_flag & NLP_ISSUE_LOGO) { 5267 mbox->mbox_cmpl = lpfc_nlp_logo_unreg; 5268 5269 } else if (phba->sli_rev == LPFC_SLI_REV4 && 5270 (!(vport->load_flag & FC_UNLOADING)) && 5271 (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) >= 5272 LPFC_SLI_INTF_IF_TYPE_2) && 5273 (kref_read(&ndlp->kref) > 0)) { 5274 mbox->mbox_cmpl = lpfc_sli4_unreg_rpi_cmpl_clr; 5275 } else { 5276 if (vport->load_flag & FC_UNLOADING) { 5277 if (phba->sli_rev == LPFC_SLI_REV4) { 5278 spin_lock_irqsave(&ndlp->lock, iflags); 5279 ndlp->nlp_flag |= NLP_RELEASE_RPI; 5280 spin_unlock_irqrestore(&ndlp->lock, iflags); 5281 } 5282 } 5283 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl; 5284 } 5285 } 5286 5287 /* 5288 * Free rpi associated with LPFC_NODELIST entry. 5289 * This routine is called from lpfc_freenode(), when we are removing 5290 * a LPFC_NODELIST entry. It is also called if the driver initiates a 5291 * LOGO that completes successfully, and we are waiting to PLOGI back 5292 * to the remote NPort. In addition, it is called after we receive 5293 * and unsolicated ELS cmd, send back a rsp, the rsp completes and 5294 * we are waiting to PLOGI back to the remote NPort. 5295 */ 5296 int 5297 lpfc_unreg_rpi(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) 5298 { 5299 struct lpfc_hba *phba = vport->phba; 5300 LPFC_MBOXQ_t *mbox; 5301 int rc, acc_plogi = 1; 5302 uint16_t rpi; 5303 5304 if (ndlp->nlp_flag & NLP_RPI_REGISTERED || 5305 ndlp->nlp_flag & NLP_REG_LOGIN_SEND) { 5306 if (ndlp->nlp_flag & NLP_REG_LOGIN_SEND) 5307 lpfc_printf_vlog(vport, KERN_INFO, 5308 LOG_NODE | LOG_DISCOVERY, 5309 "3366 RPI x%x needs to be " 5310 "unregistered nlp_flag x%x " 5311 "did x%x\n", 5312 ndlp->nlp_rpi, ndlp->nlp_flag, 5313 ndlp->nlp_DID); 5314 5315 /* If there is already an UNREG in progress for this ndlp, 5316 * no need to queue up another one. 5317 */ 5318 if (ndlp->nlp_flag & NLP_UNREG_INP) { 5319 lpfc_printf_vlog(vport, KERN_INFO, 5320 LOG_NODE | LOG_DISCOVERY, 5321 "1436 unreg_rpi SKIP UNREG x%x on " 5322 "NPort x%x deferred x%x flg x%x " 5323 "Data: x%px\n", 5324 ndlp->nlp_rpi, ndlp->nlp_DID, 5325 ndlp->nlp_defer_did, 5326 ndlp->nlp_flag, ndlp); 5327 goto out; 5328 } 5329 5330 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 5331 if (mbox) { 5332 /* SLI4 ports require the physical rpi value. */ 5333 rpi = ndlp->nlp_rpi; 5334 if (phba->sli_rev == LPFC_SLI_REV4) 5335 rpi = phba->sli4_hba.rpi_ids[ndlp->nlp_rpi]; 5336 5337 lpfc_unreg_login(phba, vport->vpi, rpi, mbox); 5338 mbox->vport = vport; 5339 lpfc_set_unreg_login_mbx_cmpl(phba, vport, ndlp, mbox); 5340 if (!mbox->ctx_ndlp) { 5341 mempool_free(mbox, phba->mbox_mem_pool); 5342 return 1; 5343 } 5344 5345 if (mbox->mbox_cmpl == lpfc_sli4_unreg_rpi_cmpl_clr) 5346 /* 5347 * accept PLOGIs after unreg_rpi_cmpl 5348 */ 5349 acc_plogi = 0; 5350 if (((ndlp->nlp_DID & Fabric_DID_MASK) != 5351 Fabric_DID_MASK) && 5352 (!(vport->fc_flag & FC_OFFLINE_MODE))) 5353 ndlp->nlp_flag |= NLP_UNREG_INP; 5354 5355 lpfc_printf_vlog(vport, KERN_INFO, 5356 LOG_NODE | LOG_DISCOVERY, 5357 "1433 unreg_rpi UNREG x%x on " 5358 "NPort x%x deferred flg x%x " 5359 "Data:x%px\n", 5360 ndlp->nlp_rpi, ndlp->nlp_DID, 5361 ndlp->nlp_flag, ndlp); 5362 5363 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT); 5364 if (rc == MBX_NOT_FINISHED) { 5365 ndlp->nlp_flag &= ~NLP_UNREG_INP; 5366 mempool_free(mbox, phba->mbox_mem_pool); 5367 acc_plogi = 1; 5368 } 5369 } else { 5370 lpfc_printf_vlog(vport, KERN_INFO, 5371 LOG_NODE | LOG_DISCOVERY, 5372 "1444 Failed to allocate mempool " 5373 "unreg_rpi UNREG x%x, " 5374 "DID x%x, flag x%x, " 5375 "ndlp x%px\n", 5376 ndlp->nlp_rpi, ndlp->nlp_DID, 5377 ndlp->nlp_flag, ndlp); 5378 5379 /* Because mempool_alloc failed, we 5380 * will issue a LOGO here and keep the rpi alive if 5381 * not unloading. 5382 */ 5383 if (!(vport->load_flag & FC_UNLOADING)) { 5384 ndlp->nlp_flag &= ~NLP_UNREG_INP; 5385 lpfc_issue_els_logo(vport, ndlp, 0); 5386 ndlp->nlp_prev_state = ndlp->nlp_state; 5387 lpfc_nlp_set_state(vport, ndlp, 5388 NLP_STE_NPR_NODE); 5389 } 5390 5391 return 1; 5392 } 5393 lpfc_no_rpi(phba, ndlp); 5394 out: 5395 if (phba->sli_rev != LPFC_SLI_REV4) 5396 ndlp->nlp_rpi = 0; 5397 ndlp->nlp_flag &= ~NLP_RPI_REGISTERED; 5398 ndlp->nlp_flag &= ~NLP_NPR_ADISC; 5399 if (acc_plogi) 5400 ndlp->nlp_flag &= ~NLP_LOGO_ACC; 5401 return 1; 5402 } 5403 ndlp->nlp_flag &= ~NLP_LOGO_ACC; 5404 return 0; 5405 } 5406 5407 /** 5408 * lpfc_unreg_hba_rpis - Unregister rpis registered to the hba. 5409 * @phba: pointer to lpfc hba data structure. 5410 * 5411 * This routine is invoked to unregister all the currently registered RPIs 5412 * to the HBA. 5413 **/ 5414 void 5415 lpfc_unreg_hba_rpis(struct lpfc_hba *phba) 5416 { 5417 struct lpfc_vport **vports; 5418 struct lpfc_nodelist *ndlp; 5419 struct Scsi_Host *shost; 5420 int i; 5421 5422 vports = lpfc_create_vport_work_array(phba); 5423 if (!vports) { 5424 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 5425 "2884 Vport array allocation failed \n"); 5426 return; 5427 } 5428 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) { 5429 shost = lpfc_shost_from_vport(vports[i]); 5430 spin_lock_irq(shost->host_lock); 5431 list_for_each_entry(ndlp, &vports[i]->fc_nodes, nlp_listp) { 5432 if (ndlp->nlp_flag & NLP_RPI_REGISTERED) { 5433 /* The mempool_alloc might sleep */ 5434 spin_unlock_irq(shost->host_lock); 5435 lpfc_unreg_rpi(vports[i], ndlp); 5436 spin_lock_irq(shost->host_lock); 5437 } 5438 } 5439 spin_unlock_irq(shost->host_lock); 5440 } 5441 lpfc_destroy_vport_work_array(phba, vports); 5442 } 5443 5444 void 5445 lpfc_unreg_all_rpis(struct lpfc_vport *vport) 5446 { 5447 struct lpfc_hba *phba = vport->phba; 5448 LPFC_MBOXQ_t *mbox; 5449 int rc; 5450 5451 if (phba->sli_rev == LPFC_SLI_REV4) { 5452 lpfc_sli4_unreg_all_rpis(vport); 5453 return; 5454 } 5455 5456 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 5457 if (mbox) { 5458 lpfc_unreg_login(phba, vport->vpi, LPFC_UNREG_ALL_RPIS_VPORT, 5459 mbox); 5460 mbox->vport = vport; 5461 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl; 5462 mbox->ctx_ndlp = NULL; 5463 rc = lpfc_sli_issue_mbox_wait(phba, mbox, LPFC_MBOX_TMO); 5464 if (rc != MBX_TIMEOUT) 5465 mempool_free(mbox, phba->mbox_mem_pool); 5466 5467 if ((rc == MBX_TIMEOUT) || (rc == MBX_NOT_FINISHED)) 5468 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 5469 "1836 Could not issue " 5470 "unreg_login(all_rpis) status %d\n", 5471 rc); 5472 } 5473 } 5474 5475 void 5476 lpfc_unreg_default_rpis(struct lpfc_vport *vport) 5477 { 5478 struct lpfc_hba *phba = vport->phba; 5479 LPFC_MBOXQ_t *mbox; 5480 int rc; 5481 5482 /* Unreg DID is an SLI3 operation. */ 5483 if (phba->sli_rev > LPFC_SLI_REV3) 5484 return; 5485 5486 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 5487 if (mbox) { 5488 lpfc_unreg_did(phba, vport->vpi, LPFC_UNREG_ALL_DFLT_RPIS, 5489 mbox); 5490 mbox->vport = vport; 5491 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl; 5492 mbox->ctx_ndlp = NULL; 5493 rc = lpfc_sli_issue_mbox_wait(phba, mbox, LPFC_MBOX_TMO); 5494 if (rc != MBX_TIMEOUT) 5495 mempool_free(mbox, phba->mbox_mem_pool); 5496 5497 if ((rc == MBX_TIMEOUT) || (rc == MBX_NOT_FINISHED)) 5498 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 5499 "1815 Could not issue " 5500 "unreg_did (default rpis) status %d\n", 5501 rc); 5502 } 5503 } 5504 5505 /* 5506 * Free resources associated with LPFC_NODELIST entry 5507 * so it can be freed. 5508 */ 5509 static int 5510 lpfc_cleanup_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) 5511 { 5512 struct lpfc_hba *phba = vport->phba; 5513 LPFC_MBOXQ_t *mb, *nextmb; 5514 struct lpfc_dmabuf *mp; 5515 5516 /* Cleanup node for NPort <nlp_DID> */ 5517 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE, 5518 "0900 Cleanup node for NPort x%x " 5519 "Data: x%x x%x x%x\n", 5520 ndlp->nlp_DID, ndlp->nlp_flag, 5521 ndlp->nlp_state, ndlp->nlp_rpi); 5522 lpfc_dequeue_node(vport, ndlp); 5523 5524 /* Don't need to clean up REG_LOGIN64 cmds for Default RPI cleanup */ 5525 5526 /* cleanup any ndlp on mbox q waiting for reglogin cmpl */ 5527 if ((mb = phba->sli.mbox_active)) { 5528 if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) && 5529 !(mb->mbox_flag & LPFC_MBX_IMED_UNREG) && 5530 (ndlp == (struct lpfc_nodelist *)mb->ctx_ndlp)) { 5531 mb->ctx_ndlp = NULL; 5532 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl; 5533 } 5534 } 5535 5536 spin_lock_irq(&phba->hbalock); 5537 /* Cleanup REG_LOGIN completions which are not yet processed */ 5538 list_for_each_entry(mb, &phba->sli.mboxq_cmpl, list) { 5539 if ((mb->u.mb.mbxCommand != MBX_REG_LOGIN64) || 5540 (mb->mbox_flag & LPFC_MBX_IMED_UNREG) || 5541 (ndlp != (struct lpfc_nodelist *)mb->ctx_ndlp)) 5542 continue; 5543 5544 mb->ctx_ndlp = NULL; 5545 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl; 5546 } 5547 5548 list_for_each_entry_safe(mb, nextmb, &phba->sli.mboxq, list) { 5549 if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) && 5550 !(mb->mbox_flag & LPFC_MBX_IMED_UNREG) && 5551 (ndlp == (struct lpfc_nodelist *)mb->ctx_ndlp)) { 5552 mp = (struct lpfc_dmabuf *)(mb->ctx_buf); 5553 if (mp) { 5554 __lpfc_mbuf_free(phba, mp->virt, mp->phys); 5555 kfree(mp); 5556 } 5557 list_del(&mb->list); 5558 mempool_free(mb, phba->mbox_mem_pool); 5559 /* We shall not invoke the lpfc_nlp_put to decrement 5560 * the ndlp reference count as we are in the process 5561 * of lpfc_nlp_release. 5562 */ 5563 } 5564 } 5565 spin_unlock_irq(&phba->hbalock); 5566 5567 lpfc_els_abort(phba, ndlp); 5568 5569 spin_lock_irq(&ndlp->lock); 5570 ndlp->nlp_flag &= ~NLP_DELAY_TMO; 5571 spin_unlock_irq(&ndlp->lock); 5572 5573 ndlp->nlp_last_elscmd = 0; 5574 del_timer_sync(&ndlp->nlp_delayfunc); 5575 5576 list_del_init(&ndlp->els_retry_evt.evt_listp); 5577 list_del_init(&ndlp->dev_loss_evt.evt_listp); 5578 list_del_init(&ndlp->recovery_evt.evt_listp); 5579 lpfc_cleanup_vports_rrqs(vport, ndlp); 5580 5581 if (phba->sli_rev == LPFC_SLI_REV4) 5582 ndlp->nlp_flag |= NLP_RELEASE_RPI; 5583 5584 return 0; 5585 } 5586 5587 static int 5588 lpfc_matchdid(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 5589 uint32_t did) 5590 { 5591 D_ID mydid, ndlpdid, matchdid; 5592 5593 if (did == Bcast_DID) 5594 return 0; 5595 5596 /* First check for Direct match */ 5597 if (ndlp->nlp_DID == did) 5598 return 1; 5599 5600 /* Next check for area/domain identically equals 0 match */ 5601 mydid.un.word = vport->fc_myDID; 5602 if ((mydid.un.b.domain == 0) && (mydid.un.b.area == 0)) { 5603 return 0; 5604 } 5605 5606 matchdid.un.word = did; 5607 ndlpdid.un.word = ndlp->nlp_DID; 5608 if (matchdid.un.b.id == ndlpdid.un.b.id) { 5609 if ((mydid.un.b.domain == matchdid.un.b.domain) && 5610 (mydid.un.b.area == matchdid.un.b.area)) { 5611 /* This code is supposed to match the ID 5612 * for a private loop device that is 5613 * connect to fl_port. But we need to 5614 * check that the port did not just go 5615 * from pt2pt to fabric or we could end 5616 * up matching ndlp->nlp_DID 000001 to 5617 * fabric DID 0x20101 5618 */ 5619 if ((ndlpdid.un.b.domain == 0) && 5620 (ndlpdid.un.b.area == 0)) { 5621 if (ndlpdid.un.b.id && 5622 vport->phba->fc_topology == 5623 LPFC_TOPOLOGY_LOOP) 5624 return 1; 5625 } 5626 return 0; 5627 } 5628 5629 matchdid.un.word = ndlp->nlp_DID; 5630 if ((mydid.un.b.domain == ndlpdid.un.b.domain) && 5631 (mydid.un.b.area == ndlpdid.un.b.area)) { 5632 if ((matchdid.un.b.domain == 0) && 5633 (matchdid.un.b.area == 0)) { 5634 if (matchdid.un.b.id) 5635 return 1; 5636 } 5637 } 5638 } 5639 return 0; 5640 } 5641 5642 /* Search for a nodelist entry */ 5643 static struct lpfc_nodelist * 5644 __lpfc_findnode_did(struct lpfc_vport *vport, uint32_t did) 5645 { 5646 struct lpfc_nodelist *ndlp; 5647 uint32_t data1; 5648 5649 list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) { 5650 if (lpfc_matchdid(vport, ndlp, did)) { 5651 data1 = (((uint32_t)ndlp->nlp_state << 24) | 5652 ((uint32_t)ndlp->nlp_xri << 16) | 5653 ((uint32_t)ndlp->nlp_type << 8) 5654 ); 5655 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE, 5656 "0929 FIND node DID " 5657 "Data: x%px x%x x%x x%x x%x x%px\n", 5658 ndlp, ndlp->nlp_DID, 5659 ndlp->nlp_flag, data1, ndlp->nlp_rpi, 5660 ndlp->active_rrqs_xri_bitmap); 5661 return ndlp; 5662 } 5663 } 5664 5665 /* FIND node did <did> NOT FOUND */ 5666 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE, 5667 "0932 FIND node did x%x NOT FOUND.\n", did); 5668 return NULL; 5669 } 5670 5671 struct lpfc_nodelist * 5672 lpfc_findnode_did(struct lpfc_vport *vport, uint32_t did) 5673 { 5674 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 5675 struct lpfc_nodelist *ndlp; 5676 unsigned long iflags; 5677 5678 spin_lock_irqsave(shost->host_lock, iflags); 5679 ndlp = __lpfc_findnode_did(vport, did); 5680 spin_unlock_irqrestore(shost->host_lock, iflags); 5681 return ndlp; 5682 } 5683 5684 struct lpfc_nodelist * 5685 lpfc_findnode_mapped(struct lpfc_vport *vport) 5686 { 5687 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 5688 struct lpfc_nodelist *ndlp; 5689 uint32_t data1; 5690 unsigned long iflags; 5691 5692 spin_lock_irqsave(shost->host_lock, iflags); 5693 5694 list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) { 5695 if (ndlp->nlp_state == NLP_STE_UNMAPPED_NODE || 5696 ndlp->nlp_state == NLP_STE_MAPPED_NODE) { 5697 data1 = (((uint32_t)ndlp->nlp_state << 24) | 5698 ((uint32_t)ndlp->nlp_xri << 16) | 5699 ((uint32_t)ndlp->nlp_type << 8) | 5700 ((uint32_t)ndlp->nlp_rpi & 0xff)); 5701 spin_unlock_irqrestore(shost->host_lock, iflags); 5702 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE, 5703 "2025 FIND node DID " 5704 "Data: x%px x%x x%x x%x x%px\n", 5705 ndlp, ndlp->nlp_DID, 5706 ndlp->nlp_flag, data1, 5707 ndlp->active_rrqs_xri_bitmap); 5708 return ndlp; 5709 } 5710 } 5711 spin_unlock_irqrestore(shost->host_lock, iflags); 5712 5713 /* FIND node did <did> NOT FOUND */ 5714 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE, 5715 "2026 FIND mapped did NOT FOUND.\n"); 5716 return NULL; 5717 } 5718 5719 struct lpfc_nodelist * 5720 lpfc_setup_disc_node(struct lpfc_vport *vport, uint32_t did) 5721 { 5722 struct lpfc_nodelist *ndlp; 5723 5724 ndlp = lpfc_findnode_did(vport, did); 5725 if (!ndlp) { 5726 if (vport->phba->nvmet_support) 5727 return NULL; 5728 if ((vport->fc_flag & FC_RSCN_MODE) != 0 && 5729 lpfc_rscn_payload_check(vport, did) == 0) 5730 return NULL; 5731 ndlp = lpfc_nlp_init(vport, did); 5732 if (!ndlp) 5733 return NULL; 5734 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE); 5735 5736 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, 5737 "6453 Setup New Node 2B_DISC x%x " 5738 "Data:x%x x%x x%x\n", 5739 ndlp->nlp_DID, ndlp->nlp_flag, 5740 ndlp->nlp_state, vport->fc_flag); 5741 5742 spin_lock_irq(&ndlp->lock); 5743 ndlp->nlp_flag |= NLP_NPR_2B_DISC; 5744 spin_unlock_irq(&ndlp->lock); 5745 return ndlp; 5746 } 5747 5748 /* The NVME Target does not want to actively manage an rport. 5749 * The goal is to allow the target to reset its state and clear 5750 * pending IO in preparation for the initiator to recover. 5751 */ 5752 if ((vport->fc_flag & FC_RSCN_MODE) && 5753 !(vport->fc_flag & FC_NDISC_ACTIVE)) { 5754 if (lpfc_rscn_payload_check(vport, did)) { 5755 5756 /* Since this node is marked for discovery, 5757 * delay timeout is not needed. 5758 */ 5759 lpfc_cancel_retry_delay_tmo(vport, ndlp); 5760 5761 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, 5762 "6455 Setup RSCN Node 2B_DISC x%x " 5763 "Data:x%x x%x x%x\n", 5764 ndlp->nlp_DID, ndlp->nlp_flag, 5765 ndlp->nlp_state, vport->fc_flag); 5766 5767 /* NVME Target mode waits until rport is known to be 5768 * impacted by the RSCN before it transitions. No 5769 * active management - just go to NPR provided the 5770 * node had a valid login. 5771 */ 5772 if (vport->phba->nvmet_support) 5773 return ndlp; 5774 5775 /* If we've already received a PLOGI from this NPort 5776 * we don't need to try to discover it again. 5777 */ 5778 if (ndlp->nlp_flag & NLP_RCV_PLOGI && 5779 !(ndlp->nlp_type & 5780 (NLP_FCP_TARGET | NLP_NVME_TARGET))) 5781 return NULL; 5782 5783 ndlp->nlp_prev_state = ndlp->nlp_state; 5784 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE); 5785 5786 spin_lock_irq(&ndlp->lock); 5787 ndlp->nlp_flag |= NLP_NPR_2B_DISC; 5788 spin_unlock_irq(&ndlp->lock); 5789 } else { 5790 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, 5791 "6456 Skip Setup RSCN Node x%x " 5792 "Data:x%x x%x x%x\n", 5793 ndlp->nlp_DID, ndlp->nlp_flag, 5794 ndlp->nlp_state, vport->fc_flag); 5795 ndlp = NULL; 5796 } 5797 } else { 5798 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, 5799 "6457 Setup Active Node 2B_DISC x%x " 5800 "Data:x%x x%x x%x\n", 5801 ndlp->nlp_DID, ndlp->nlp_flag, 5802 ndlp->nlp_state, vport->fc_flag); 5803 5804 /* If the initiator received a PLOGI from this NPort or if the 5805 * initiator is already in the process of discovery on it, 5806 * there's no need to try to discover it again. 5807 */ 5808 if (ndlp->nlp_state == NLP_STE_ADISC_ISSUE || 5809 ndlp->nlp_state == NLP_STE_PLOGI_ISSUE || 5810 (!vport->phba->nvmet_support && 5811 ndlp->nlp_flag & NLP_RCV_PLOGI)) 5812 return NULL; 5813 5814 if (vport->phba->nvmet_support) 5815 return ndlp; 5816 5817 /* Moving to NPR state clears unsolicited flags and 5818 * allows for rediscovery 5819 */ 5820 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE); 5821 5822 spin_lock_irq(&ndlp->lock); 5823 ndlp->nlp_flag |= NLP_NPR_2B_DISC; 5824 spin_unlock_irq(&ndlp->lock); 5825 } 5826 return ndlp; 5827 } 5828 5829 /* Build a list of nodes to discover based on the loopmap */ 5830 void 5831 lpfc_disc_list_loopmap(struct lpfc_vport *vport) 5832 { 5833 struct lpfc_hba *phba = vport->phba; 5834 int j; 5835 uint32_t alpa, index; 5836 5837 if (!lpfc_is_link_up(phba)) 5838 return; 5839 5840 if (phba->fc_topology != LPFC_TOPOLOGY_LOOP) 5841 return; 5842 5843 /* Check for loop map present or not */ 5844 if (phba->alpa_map[0]) { 5845 for (j = 1; j <= phba->alpa_map[0]; j++) { 5846 alpa = phba->alpa_map[j]; 5847 if (((vport->fc_myDID & 0xff) == alpa) || (alpa == 0)) 5848 continue; 5849 lpfc_setup_disc_node(vport, alpa); 5850 } 5851 } else { 5852 /* No alpamap, so try all alpa's */ 5853 for (j = 0; j < FC_MAXLOOP; j++) { 5854 /* If cfg_scan_down is set, start from highest 5855 * ALPA (0xef) to lowest (0x1). 5856 */ 5857 if (vport->cfg_scan_down) 5858 index = j; 5859 else 5860 index = FC_MAXLOOP - j - 1; 5861 alpa = lpfcAlpaArray[index]; 5862 if ((vport->fc_myDID & 0xff) == alpa) 5863 continue; 5864 lpfc_setup_disc_node(vport, alpa); 5865 } 5866 } 5867 return; 5868 } 5869 5870 /* SLI3 only */ 5871 void 5872 lpfc_issue_clear_la(struct lpfc_hba *phba, struct lpfc_vport *vport) 5873 { 5874 LPFC_MBOXQ_t *mbox; 5875 struct lpfc_sli *psli = &phba->sli; 5876 struct lpfc_sli_ring *extra_ring = &psli->sli3_ring[LPFC_EXTRA_RING]; 5877 struct lpfc_sli_ring *fcp_ring = &psli->sli3_ring[LPFC_FCP_RING]; 5878 int rc; 5879 5880 /* 5881 * if it's not a physical port or if we already send 5882 * clear_la then don't send it. 5883 */ 5884 if ((phba->link_state >= LPFC_CLEAR_LA) || 5885 (vport->port_type != LPFC_PHYSICAL_PORT) || 5886 (phba->sli_rev == LPFC_SLI_REV4)) 5887 return; 5888 5889 /* Link up discovery */ 5890 if ((mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL)) != NULL) { 5891 phba->link_state = LPFC_CLEAR_LA; 5892 lpfc_clear_la(phba, mbox); 5893 mbox->mbox_cmpl = lpfc_mbx_cmpl_clear_la; 5894 mbox->vport = vport; 5895 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT); 5896 if (rc == MBX_NOT_FINISHED) { 5897 mempool_free(mbox, phba->mbox_mem_pool); 5898 lpfc_disc_flush_list(vport); 5899 extra_ring->flag &= ~LPFC_STOP_IOCB_EVENT; 5900 fcp_ring->flag &= ~LPFC_STOP_IOCB_EVENT; 5901 phba->link_state = LPFC_HBA_ERROR; 5902 } 5903 } 5904 } 5905 5906 /* Reg_vpi to tell firmware to resume normal operations */ 5907 void 5908 lpfc_issue_reg_vpi(struct lpfc_hba *phba, struct lpfc_vport *vport) 5909 { 5910 LPFC_MBOXQ_t *regvpimbox; 5911 5912 regvpimbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 5913 if (regvpimbox) { 5914 lpfc_reg_vpi(vport, regvpimbox); 5915 regvpimbox->mbox_cmpl = lpfc_mbx_cmpl_reg_vpi; 5916 regvpimbox->vport = vport; 5917 if (lpfc_sli_issue_mbox(phba, regvpimbox, MBX_NOWAIT) 5918 == MBX_NOT_FINISHED) { 5919 mempool_free(regvpimbox, phba->mbox_mem_pool); 5920 } 5921 } 5922 } 5923 5924 /* Start Link up / RSCN discovery on NPR nodes */ 5925 void 5926 lpfc_disc_start(struct lpfc_vport *vport) 5927 { 5928 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 5929 struct lpfc_hba *phba = vport->phba; 5930 uint32_t num_sent; 5931 uint32_t clear_la_pending; 5932 5933 if (!lpfc_is_link_up(phba)) { 5934 lpfc_printf_vlog(vport, KERN_INFO, LOG_SLI, 5935 "3315 Link is not up %x\n", 5936 phba->link_state); 5937 return; 5938 } 5939 5940 if (phba->link_state == LPFC_CLEAR_LA) 5941 clear_la_pending = 1; 5942 else 5943 clear_la_pending = 0; 5944 5945 if (vport->port_state < LPFC_VPORT_READY) 5946 vport->port_state = LPFC_DISC_AUTH; 5947 5948 lpfc_set_disctmo(vport); 5949 5950 vport->fc_prevDID = vport->fc_myDID; 5951 vport->num_disc_nodes = 0; 5952 5953 /* Start Discovery state <hba_state> */ 5954 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, 5955 "0202 Start Discovery port state x%x " 5956 "flg x%x Data: x%x x%x x%x\n", 5957 vport->port_state, vport->fc_flag, vport->fc_plogi_cnt, 5958 vport->fc_adisc_cnt, vport->fc_npr_cnt); 5959 5960 /* First do ADISCs - if any */ 5961 num_sent = lpfc_els_disc_adisc(vport); 5962 5963 if (num_sent) 5964 return; 5965 5966 /* Register the VPI for SLI3, NPIV only. */ 5967 if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) && 5968 !(vport->fc_flag & FC_PT2PT) && 5969 !(vport->fc_flag & FC_RSCN_MODE) && 5970 (phba->sli_rev < LPFC_SLI_REV4)) { 5971 lpfc_issue_clear_la(phba, vport); 5972 lpfc_issue_reg_vpi(phba, vport); 5973 return; 5974 } 5975 5976 /* 5977 * For SLI2, we need to set port_state to READY and continue 5978 * discovery. 5979 */ 5980 if (vport->port_state < LPFC_VPORT_READY && !clear_la_pending) { 5981 /* If we get here, there is nothing to ADISC */ 5982 lpfc_issue_clear_la(phba, vport); 5983 5984 if (!(vport->fc_flag & FC_ABORT_DISCOVERY)) { 5985 vport->num_disc_nodes = 0; 5986 /* go thru NPR nodes and issue ELS PLOGIs */ 5987 if (vport->fc_npr_cnt) 5988 lpfc_els_disc_plogi(vport); 5989 5990 if (!vport->num_disc_nodes) { 5991 spin_lock_irq(shost->host_lock); 5992 vport->fc_flag &= ~FC_NDISC_ACTIVE; 5993 spin_unlock_irq(shost->host_lock); 5994 lpfc_can_disctmo(vport); 5995 } 5996 } 5997 vport->port_state = LPFC_VPORT_READY; 5998 } else { 5999 /* Next do PLOGIs - if any */ 6000 num_sent = lpfc_els_disc_plogi(vport); 6001 6002 if (num_sent) 6003 return; 6004 6005 if (vport->fc_flag & FC_RSCN_MODE) { 6006 /* Check to see if more RSCNs came in while we 6007 * were processing this one. 6008 */ 6009 if ((vport->fc_rscn_id_cnt == 0) && 6010 (!(vport->fc_flag & FC_RSCN_DISCOVERY))) { 6011 spin_lock_irq(shost->host_lock); 6012 vport->fc_flag &= ~FC_RSCN_MODE; 6013 spin_unlock_irq(shost->host_lock); 6014 lpfc_can_disctmo(vport); 6015 } else 6016 lpfc_els_handle_rscn(vport); 6017 } 6018 } 6019 return; 6020 } 6021 6022 /* 6023 * Ignore completion for all IOCBs on tx and txcmpl queue for ELS 6024 * ring the match the sppecified nodelist. 6025 */ 6026 static void 6027 lpfc_free_tx(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp) 6028 { 6029 LIST_HEAD(completions); 6030 IOCB_t *icmd; 6031 struct lpfc_iocbq *iocb, *next_iocb; 6032 struct lpfc_sli_ring *pring; 6033 6034 pring = lpfc_phba_elsring(phba); 6035 if (unlikely(!pring)) 6036 return; 6037 6038 /* Error matching iocb on txq or txcmplq 6039 * First check the txq. 6040 */ 6041 spin_lock_irq(&phba->hbalock); 6042 list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) { 6043 if (iocb->context1 != ndlp) { 6044 continue; 6045 } 6046 icmd = &iocb->iocb; 6047 if ((icmd->ulpCommand == CMD_ELS_REQUEST64_CR) || 6048 (icmd->ulpCommand == CMD_XMIT_ELS_RSP64_CX)) { 6049 6050 list_move_tail(&iocb->list, &completions); 6051 } 6052 } 6053 6054 /* Next check the txcmplq */ 6055 list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq, list) { 6056 if (iocb->context1 != ndlp) { 6057 continue; 6058 } 6059 icmd = &iocb->iocb; 6060 if (icmd->ulpCommand == CMD_ELS_REQUEST64_CR || 6061 icmd->ulpCommand == CMD_XMIT_ELS_RSP64_CX) { 6062 lpfc_sli_issue_abort_iotag(phba, pring, iocb, NULL); 6063 } 6064 } 6065 spin_unlock_irq(&phba->hbalock); 6066 6067 /* Make sure HBA is alive */ 6068 lpfc_issue_hb_tmo(phba); 6069 6070 /* Cancel all the IOCBs from the completions list */ 6071 lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT, 6072 IOERR_SLI_ABORTED); 6073 } 6074 6075 static void 6076 lpfc_disc_flush_list(struct lpfc_vport *vport) 6077 { 6078 struct lpfc_nodelist *ndlp, *next_ndlp; 6079 struct lpfc_hba *phba = vport->phba; 6080 6081 if (vport->fc_plogi_cnt || vport->fc_adisc_cnt) { 6082 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, 6083 nlp_listp) { 6084 if (ndlp->nlp_state == NLP_STE_PLOGI_ISSUE || 6085 ndlp->nlp_state == NLP_STE_ADISC_ISSUE) { 6086 lpfc_free_tx(phba, ndlp); 6087 } 6088 } 6089 } 6090 } 6091 6092 void 6093 lpfc_cleanup_discovery_resources(struct lpfc_vport *vport) 6094 { 6095 lpfc_els_flush_rscn(vport); 6096 lpfc_els_flush_cmd(vport); 6097 lpfc_disc_flush_list(vport); 6098 } 6099 6100 /*****************************************************************************/ 6101 /* 6102 * NAME: lpfc_disc_timeout 6103 * 6104 * FUNCTION: Fibre Channel driver discovery timeout routine. 6105 * 6106 * EXECUTION ENVIRONMENT: interrupt only 6107 * 6108 * CALLED FROM: 6109 * Timer function 6110 * 6111 * RETURNS: 6112 * none 6113 */ 6114 /*****************************************************************************/ 6115 void 6116 lpfc_disc_timeout(struct timer_list *t) 6117 { 6118 struct lpfc_vport *vport = from_timer(vport, t, fc_disctmo); 6119 struct lpfc_hba *phba = vport->phba; 6120 uint32_t tmo_posted; 6121 unsigned long flags = 0; 6122 6123 if (unlikely(!phba)) 6124 return; 6125 6126 spin_lock_irqsave(&vport->work_port_lock, flags); 6127 tmo_posted = vport->work_port_events & WORKER_DISC_TMO; 6128 if (!tmo_posted) 6129 vport->work_port_events |= WORKER_DISC_TMO; 6130 spin_unlock_irqrestore(&vport->work_port_lock, flags); 6131 6132 if (!tmo_posted) 6133 lpfc_worker_wake_up(phba); 6134 return; 6135 } 6136 6137 static void 6138 lpfc_disc_timeout_handler(struct lpfc_vport *vport) 6139 { 6140 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 6141 struct lpfc_hba *phba = vport->phba; 6142 struct lpfc_sli *psli = &phba->sli; 6143 struct lpfc_nodelist *ndlp, *next_ndlp; 6144 LPFC_MBOXQ_t *initlinkmbox; 6145 int rc, clrlaerr = 0; 6146 6147 if (!(vport->fc_flag & FC_DISC_TMO)) 6148 return; 6149 6150 spin_lock_irq(shost->host_lock); 6151 vport->fc_flag &= ~FC_DISC_TMO; 6152 spin_unlock_irq(shost->host_lock); 6153 6154 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, 6155 "disc timeout: state:x%x rtry:x%x flg:x%x", 6156 vport->port_state, vport->fc_ns_retry, vport->fc_flag); 6157 6158 switch (vport->port_state) { 6159 6160 case LPFC_LOCAL_CFG_LINK: 6161 /* 6162 * port_state is identically LPFC_LOCAL_CFG_LINK while 6163 * waiting for FAN timeout 6164 */ 6165 lpfc_printf_vlog(vport, KERN_WARNING, LOG_DISCOVERY, 6166 "0221 FAN timeout\n"); 6167 6168 /* Start discovery by sending FLOGI, clean up old rpis */ 6169 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, 6170 nlp_listp) { 6171 if (ndlp->nlp_state != NLP_STE_NPR_NODE) 6172 continue; 6173 if (ndlp->nlp_type & NLP_FABRIC) { 6174 /* Clean up the ndlp on Fabric connections */ 6175 lpfc_drop_node(vport, ndlp); 6176 6177 } else if (!(ndlp->nlp_flag & NLP_NPR_ADISC)) { 6178 /* Fail outstanding IO now since device 6179 * is marked for PLOGI. 6180 */ 6181 lpfc_unreg_rpi(vport, ndlp); 6182 } 6183 } 6184 if (vport->port_state != LPFC_FLOGI) { 6185 if (phba->sli_rev <= LPFC_SLI_REV3) 6186 lpfc_initial_flogi(vport); 6187 else 6188 lpfc_issue_init_vfi(vport); 6189 return; 6190 } 6191 break; 6192 6193 case LPFC_FDISC: 6194 case LPFC_FLOGI: 6195 /* port_state is identically LPFC_FLOGI while waiting for FLOGI cmpl */ 6196 /* Initial FLOGI timeout */ 6197 lpfc_printf_vlog(vport, KERN_ERR, 6198 LOG_TRACE_EVENT, 6199 "0222 Initial %s timeout\n", 6200 vport->vpi ? "FDISC" : "FLOGI"); 6201 6202 /* Assume no Fabric and go on with discovery. 6203 * Check for outstanding ELS FLOGI to abort. 6204 */ 6205 6206 /* FLOGI failed, so just use loop map to make discovery list */ 6207 lpfc_disc_list_loopmap(vport); 6208 6209 /* Start discovery */ 6210 lpfc_disc_start(vport); 6211 break; 6212 6213 case LPFC_FABRIC_CFG_LINK: 6214 /* hba_state is identically LPFC_FABRIC_CFG_LINK while waiting for 6215 NameServer login */ 6216 lpfc_printf_vlog(vport, KERN_ERR, 6217 LOG_TRACE_EVENT, 6218 "0223 Timeout while waiting for " 6219 "NameServer login\n"); 6220 /* Next look for NameServer ndlp */ 6221 ndlp = lpfc_findnode_did(vport, NameServer_DID); 6222 if (ndlp) 6223 lpfc_els_abort(phba, ndlp); 6224 6225 /* ReStart discovery */ 6226 goto restart_disc; 6227 6228 case LPFC_NS_QRY: 6229 /* Check for wait for NameServer Rsp timeout */ 6230 lpfc_printf_vlog(vport, KERN_ERR, 6231 LOG_TRACE_EVENT, 6232 "0224 NameServer Query timeout " 6233 "Data: x%x x%x\n", 6234 vport->fc_ns_retry, LPFC_MAX_NS_RETRY); 6235 6236 if (vport->fc_ns_retry < LPFC_MAX_NS_RETRY) { 6237 /* Try it one more time */ 6238 vport->fc_ns_retry++; 6239 vport->gidft_inp = 0; 6240 rc = lpfc_issue_gidft(vport); 6241 if (rc == 0) 6242 break; 6243 } 6244 vport->fc_ns_retry = 0; 6245 6246 restart_disc: 6247 /* 6248 * Discovery is over. 6249 * set port_state to PORT_READY if SLI2. 6250 * cmpl_reg_vpi will set port_state to READY for SLI3. 6251 */ 6252 if (phba->sli_rev < LPFC_SLI_REV4) { 6253 if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) 6254 lpfc_issue_reg_vpi(phba, vport); 6255 else { 6256 lpfc_issue_clear_la(phba, vport); 6257 vport->port_state = LPFC_VPORT_READY; 6258 } 6259 } 6260 6261 /* Setup and issue mailbox INITIALIZE LINK command */ 6262 initlinkmbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 6263 if (!initlinkmbox) { 6264 lpfc_printf_vlog(vport, KERN_ERR, 6265 LOG_TRACE_EVENT, 6266 "0206 Device Discovery " 6267 "completion error\n"); 6268 phba->link_state = LPFC_HBA_ERROR; 6269 break; 6270 } 6271 6272 lpfc_linkdown(phba); 6273 lpfc_init_link(phba, initlinkmbox, phba->cfg_topology, 6274 phba->cfg_link_speed); 6275 initlinkmbox->u.mb.un.varInitLnk.lipsr_AL_PA = 0; 6276 initlinkmbox->vport = vport; 6277 initlinkmbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl; 6278 rc = lpfc_sli_issue_mbox(phba, initlinkmbox, MBX_NOWAIT); 6279 lpfc_set_loopback_flag(phba); 6280 if (rc == MBX_NOT_FINISHED) 6281 mempool_free(initlinkmbox, phba->mbox_mem_pool); 6282 6283 break; 6284 6285 case LPFC_DISC_AUTH: 6286 /* Node Authentication timeout */ 6287 lpfc_printf_vlog(vport, KERN_ERR, 6288 LOG_TRACE_EVENT, 6289 "0227 Node Authentication timeout\n"); 6290 lpfc_disc_flush_list(vport); 6291 6292 /* 6293 * set port_state to PORT_READY if SLI2. 6294 * cmpl_reg_vpi will set port_state to READY for SLI3. 6295 */ 6296 if (phba->sli_rev < LPFC_SLI_REV4) { 6297 if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) 6298 lpfc_issue_reg_vpi(phba, vport); 6299 else { /* NPIV Not enabled */ 6300 lpfc_issue_clear_la(phba, vport); 6301 vport->port_state = LPFC_VPORT_READY; 6302 } 6303 } 6304 break; 6305 6306 case LPFC_VPORT_READY: 6307 if (vport->fc_flag & FC_RSCN_MODE) { 6308 lpfc_printf_vlog(vport, KERN_ERR, 6309 LOG_TRACE_EVENT, 6310 "0231 RSCN timeout Data: x%x " 6311 "x%x\n", 6312 vport->fc_ns_retry, LPFC_MAX_NS_RETRY); 6313 6314 /* Cleanup any outstanding ELS commands */ 6315 lpfc_els_flush_cmd(vport); 6316 6317 lpfc_els_flush_rscn(vport); 6318 lpfc_disc_flush_list(vport); 6319 } 6320 break; 6321 6322 default: 6323 lpfc_printf_vlog(vport, KERN_ERR, 6324 LOG_TRACE_EVENT, 6325 "0273 Unexpected discovery timeout, " 6326 "vport State x%x\n", vport->port_state); 6327 break; 6328 } 6329 6330 switch (phba->link_state) { 6331 case LPFC_CLEAR_LA: 6332 /* CLEAR LA timeout */ 6333 lpfc_printf_vlog(vport, KERN_ERR, 6334 LOG_TRACE_EVENT, 6335 "0228 CLEAR LA timeout\n"); 6336 clrlaerr = 1; 6337 break; 6338 6339 case LPFC_LINK_UP: 6340 lpfc_issue_clear_la(phba, vport); 6341 fallthrough; 6342 case LPFC_LINK_UNKNOWN: 6343 case LPFC_WARM_START: 6344 case LPFC_INIT_START: 6345 case LPFC_INIT_MBX_CMDS: 6346 case LPFC_LINK_DOWN: 6347 case LPFC_HBA_ERROR: 6348 lpfc_printf_vlog(vport, KERN_ERR, 6349 LOG_TRACE_EVENT, 6350 "0230 Unexpected timeout, hba link " 6351 "state x%x\n", phba->link_state); 6352 clrlaerr = 1; 6353 break; 6354 6355 case LPFC_HBA_READY: 6356 break; 6357 } 6358 6359 if (clrlaerr) { 6360 lpfc_disc_flush_list(vport); 6361 if (phba->sli_rev != LPFC_SLI_REV4) { 6362 psli->sli3_ring[(LPFC_EXTRA_RING)].flag &= 6363 ~LPFC_STOP_IOCB_EVENT; 6364 psli->sli3_ring[LPFC_FCP_RING].flag &= 6365 ~LPFC_STOP_IOCB_EVENT; 6366 } 6367 vport->port_state = LPFC_VPORT_READY; 6368 } 6369 return; 6370 } 6371 6372 /* 6373 * This routine handles processing a NameServer REG_LOGIN mailbox 6374 * command upon completion. It is setup in the LPFC_MBOXQ 6375 * as the completion routine when the command is 6376 * handed off to the SLI layer. 6377 */ 6378 void 6379 lpfc_mbx_cmpl_fdmi_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 6380 { 6381 MAILBOX_t *mb = &pmb->u.mb; 6382 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *)(pmb->ctx_buf); 6383 struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *)pmb->ctx_ndlp; 6384 struct lpfc_vport *vport = pmb->vport; 6385 6386 pmb->ctx_buf = NULL; 6387 pmb->ctx_ndlp = NULL; 6388 6389 if (phba->sli_rev < LPFC_SLI_REV4) 6390 ndlp->nlp_rpi = mb->un.varWords[0]; 6391 ndlp->nlp_flag |= NLP_RPI_REGISTERED; 6392 ndlp->nlp_type |= NLP_FABRIC; 6393 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE); 6394 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE | LOG_DISCOVERY, 6395 "0004 rpi:%x DID:%x flg:%x %d x%px\n", 6396 ndlp->nlp_rpi, ndlp->nlp_DID, ndlp->nlp_flag, 6397 kref_read(&ndlp->kref), 6398 ndlp); 6399 /* 6400 * Start issuing Fabric-Device Management Interface (FDMI) command to 6401 * 0xfffffa (FDMI well known port). 6402 * DHBA -> DPRT -> RHBA -> RPA (physical port) 6403 * DPRT -> RPRT (vports) 6404 */ 6405 if (vport->port_type == LPFC_PHYSICAL_PORT) { 6406 phba->link_flag &= ~LS_CT_VEN_RPA; /* For extra Vendor RPA */ 6407 lpfc_fdmi_cmd(vport, ndlp, SLI_MGMT_DHBA, 0); 6408 } else { 6409 lpfc_fdmi_cmd(vport, ndlp, SLI_MGMT_DPRT, 0); 6410 } 6411 6412 6413 /* decrement the node reference count held for this callback 6414 * function. 6415 */ 6416 lpfc_nlp_put(ndlp); 6417 lpfc_mbuf_free(phba, mp->virt, mp->phys); 6418 kfree(mp); 6419 mempool_free(pmb, phba->mbox_mem_pool); 6420 6421 return; 6422 } 6423 6424 static int 6425 lpfc_filter_by_rpi(struct lpfc_nodelist *ndlp, void *param) 6426 { 6427 uint16_t *rpi = param; 6428 6429 return ndlp->nlp_rpi == *rpi; 6430 } 6431 6432 static int 6433 lpfc_filter_by_wwpn(struct lpfc_nodelist *ndlp, void *param) 6434 { 6435 return memcmp(&ndlp->nlp_portname, param, 6436 sizeof(ndlp->nlp_portname)) == 0; 6437 } 6438 6439 static struct lpfc_nodelist * 6440 __lpfc_find_node(struct lpfc_vport *vport, node_filter filter, void *param) 6441 { 6442 struct lpfc_nodelist *ndlp; 6443 6444 list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) { 6445 if (filter(ndlp, param)) { 6446 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE, 6447 "3185 FIND node filter %ps DID " 6448 "ndlp x%px did x%x flg x%x st x%x " 6449 "xri x%x type x%x rpi x%x\n", 6450 filter, ndlp, ndlp->nlp_DID, 6451 ndlp->nlp_flag, ndlp->nlp_state, 6452 ndlp->nlp_xri, ndlp->nlp_type, 6453 ndlp->nlp_rpi); 6454 return ndlp; 6455 } 6456 } 6457 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE, 6458 "3186 FIND node filter %ps NOT FOUND.\n", filter); 6459 return NULL; 6460 } 6461 6462 /* 6463 * This routine looks up the ndlp lists for the given RPI. If rpi found it 6464 * returns the node list element pointer else return NULL. 6465 */ 6466 struct lpfc_nodelist * 6467 __lpfc_findnode_rpi(struct lpfc_vport *vport, uint16_t rpi) 6468 { 6469 return __lpfc_find_node(vport, lpfc_filter_by_rpi, &rpi); 6470 } 6471 6472 /* 6473 * This routine looks up the ndlp lists for the given WWPN. If WWPN found it 6474 * returns the node element list pointer else return NULL. 6475 */ 6476 struct lpfc_nodelist * 6477 lpfc_findnode_wwpn(struct lpfc_vport *vport, struct lpfc_name *wwpn) 6478 { 6479 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 6480 struct lpfc_nodelist *ndlp; 6481 6482 spin_lock_irq(shost->host_lock); 6483 ndlp = __lpfc_find_node(vport, lpfc_filter_by_wwpn, wwpn); 6484 spin_unlock_irq(shost->host_lock); 6485 return ndlp; 6486 } 6487 6488 /* 6489 * This routine looks up the ndlp lists for the given RPI. If the rpi 6490 * is found, the routine returns the node element list pointer else 6491 * return NULL. 6492 */ 6493 struct lpfc_nodelist * 6494 lpfc_findnode_rpi(struct lpfc_vport *vport, uint16_t rpi) 6495 { 6496 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 6497 struct lpfc_nodelist *ndlp; 6498 unsigned long flags; 6499 6500 spin_lock_irqsave(shost->host_lock, flags); 6501 ndlp = __lpfc_findnode_rpi(vport, rpi); 6502 spin_unlock_irqrestore(shost->host_lock, flags); 6503 return ndlp; 6504 } 6505 6506 /** 6507 * lpfc_find_vport_by_vpid - Find a vport on a HBA through vport identifier 6508 * @phba: pointer to lpfc hba data structure. 6509 * @vpi: the physical host virtual N_Port identifier. 6510 * 6511 * This routine finds a vport on a HBA (referred by @phba) through a 6512 * @vpi. The function walks the HBA's vport list and returns the address 6513 * of the vport with the matching @vpi. 6514 * 6515 * Return code 6516 * NULL - No vport with the matching @vpi found 6517 * Otherwise - Address to the vport with the matching @vpi. 6518 **/ 6519 struct lpfc_vport * 6520 lpfc_find_vport_by_vpid(struct lpfc_hba *phba, uint16_t vpi) 6521 { 6522 struct lpfc_vport *vport; 6523 unsigned long flags; 6524 int i = 0; 6525 6526 /* The physical ports are always vpi 0 - translate is unnecessary. */ 6527 if (vpi > 0) { 6528 /* 6529 * Translate the physical vpi to the logical vpi. The 6530 * vport stores the logical vpi. 6531 */ 6532 for (i = 0; i <= phba->max_vpi; i++) { 6533 if (vpi == phba->vpi_ids[i]) 6534 break; 6535 } 6536 6537 if (i > phba->max_vpi) { 6538 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 6539 "2936 Could not find Vport mapped " 6540 "to vpi %d\n", vpi); 6541 return NULL; 6542 } 6543 } 6544 6545 spin_lock_irqsave(&phba->port_list_lock, flags); 6546 list_for_each_entry(vport, &phba->port_list, listentry) { 6547 if (vport->vpi == i) { 6548 spin_unlock_irqrestore(&phba->port_list_lock, flags); 6549 return vport; 6550 } 6551 } 6552 spin_unlock_irqrestore(&phba->port_list_lock, flags); 6553 return NULL; 6554 } 6555 6556 struct lpfc_nodelist * 6557 lpfc_nlp_init(struct lpfc_vport *vport, uint32_t did) 6558 { 6559 struct lpfc_nodelist *ndlp; 6560 int rpi = LPFC_RPI_ALLOC_ERROR; 6561 6562 if (vport->phba->sli_rev == LPFC_SLI_REV4) { 6563 rpi = lpfc_sli4_alloc_rpi(vport->phba); 6564 if (rpi == LPFC_RPI_ALLOC_ERROR) 6565 return NULL; 6566 } 6567 6568 ndlp = mempool_alloc(vport->phba->nlp_mem_pool, GFP_KERNEL); 6569 if (!ndlp) { 6570 if (vport->phba->sli_rev == LPFC_SLI_REV4) 6571 lpfc_sli4_free_rpi(vport->phba, rpi); 6572 return NULL; 6573 } 6574 6575 memset(ndlp, 0, sizeof (struct lpfc_nodelist)); 6576 6577 spin_lock_init(&ndlp->lock); 6578 6579 lpfc_initialize_node(vport, ndlp, did); 6580 INIT_LIST_HEAD(&ndlp->nlp_listp); 6581 if (vport->phba->sli_rev == LPFC_SLI_REV4) { 6582 ndlp->nlp_rpi = rpi; 6583 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE | LOG_DISCOVERY, 6584 "0007 Init New ndlp x%px, rpi:x%x DID:%x " 6585 "flg:x%x refcnt:%d\n", 6586 ndlp, ndlp->nlp_rpi, ndlp->nlp_DID, 6587 ndlp->nlp_flag, kref_read(&ndlp->kref)); 6588 6589 ndlp->active_rrqs_xri_bitmap = 6590 mempool_alloc(vport->phba->active_rrq_pool, 6591 GFP_KERNEL); 6592 if (ndlp->active_rrqs_xri_bitmap) 6593 memset(ndlp->active_rrqs_xri_bitmap, 0, 6594 ndlp->phba->cfg_rrq_xri_bitmap_sz); 6595 } 6596 6597 6598 6599 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE, 6600 "node init: did:x%x", 6601 ndlp->nlp_DID, 0, 0); 6602 6603 return ndlp; 6604 } 6605 6606 /* This routine releases all resources associated with a specifc NPort's ndlp 6607 * and mempool_free's the nodelist. 6608 */ 6609 static void 6610 lpfc_nlp_release(struct kref *kref) 6611 { 6612 struct lpfc_nodelist *ndlp = container_of(kref, struct lpfc_nodelist, 6613 kref); 6614 struct lpfc_vport *vport = ndlp->vport; 6615 6616 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE, 6617 "node release: did:x%x flg:x%x type:x%x", 6618 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type); 6619 6620 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE, 6621 "0279 %s: ndlp: x%px did %x refcnt:%d rpi:%x\n", 6622 __func__, ndlp, ndlp->nlp_DID, 6623 kref_read(&ndlp->kref), ndlp->nlp_rpi); 6624 6625 /* remove ndlp from action. */ 6626 lpfc_cancel_retry_delay_tmo(vport, ndlp); 6627 lpfc_cleanup_node(vport, ndlp); 6628 6629 /* Not all ELS transactions have registered the RPI with the port. 6630 * In these cases the rpi usage is temporary and the node is 6631 * released when the WQE is completed. Catch this case to free the 6632 * RPI to the pool. Because this node is in the release path, a lock 6633 * is unnecessary. All references are gone and the node has been 6634 * dequeued. 6635 */ 6636 if (ndlp->nlp_flag & NLP_RELEASE_RPI) { 6637 if (ndlp->nlp_rpi != LPFC_RPI_ALLOC_ERROR && 6638 !(ndlp->nlp_flag & (NLP_RPI_REGISTERED | NLP_UNREG_INP))) { 6639 lpfc_sli4_free_rpi(vport->phba, ndlp->nlp_rpi); 6640 ndlp->nlp_rpi = LPFC_RPI_ALLOC_ERROR; 6641 } 6642 } 6643 6644 /* The node is not freed back to memory, it is released to a pool so 6645 * the node fields need to be cleaned up. 6646 */ 6647 ndlp->vport = NULL; 6648 ndlp->nlp_state = NLP_STE_FREED_NODE; 6649 ndlp->nlp_flag = 0; 6650 ndlp->fc4_xpt_flags = 0; 6651 6652 /* free ndlp memory for final ndlp release */ 6653 kfree(ndlp->lat_data); 6654 if (ndlp->phba->sli_rev == LPFC_SLI_REV4) 6655 mempool_free(ndlp->active_rrqs_xri_bitmap, 6656 ndlp->phba->active_rrq_pool); 6657 mempool_free(ndlp, ndlp->phba->nlp_mem_pool); 6658 } 6659 6660 /* This routine bumps the reference count for a ndlp structure to ensure 6661 * that one discovery thread won't free a ndlp while another discovery thread 6662 * is using it. 6663 */ 6664 struct lpfc_nodelist * 6665 lpfc_nlp_get(struct lpfc_nodelist *ndlp) 6666 { 6667 unsigned long flags; 6668 6669 if (ndlp) { 6670 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE, 6671 "node get: did:x%x flg:x%x refcnt:x%x", 6672 ndlp->nlp_DID, ndlp->nlp_flag, 6673 kref_read(&ndlp->kref)); 6674 6675 /* The check of ndlp usage to prevent incrementing the 6676 * ndlp reference count that is in the process of being 6677 * released. 6678 */ 6679 spin_lock_irqsave(&ndlp->lock, flags); 6680 if (!kref_get_unless_zero(&ndlp->kref)) { 6681 spin_unlock_irqrestore(&ndlp->lock, flags); 6682 lpfc_printf_vlog(ndlp->vport, KERN_WARNING, LOG_NODE, 6683 "0276 %s: ndlp:x%px refcnt:%d\n", 6684 __func__, (void *)ndlp, kref_read(&ndlp->kref)); 6685 return NULL; 6686 } 6687 spin_unlock_irqrestore(&ndlp->lock, flags); 6688 } else { 6689 WARN_ONCE(!ndlp, "**** %s, get ref on NULL ndlp!", __func__); 6690 } 6691 6692 return ndlp; 6693 } 6694 6695 /* This routine decrements the reference count for a ndlp structure. If the 6696 * count goes to 0, this indicates the associated nodelist should be freed. 6697 */ 6698 int 6699 lpfc_nlp_put(struct lpfc_nodelist *ndlp) 6700 { 6701 if (ndlp) { 6702 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE, 6703 "node put: did:x%x flg:x%x refcnt:x%x", 6704 ndlp->nlp_DID, ndlp->nlp_flag, 6705 kref_read(&ndlp->kref)); 6706 } else { 6707 WARN_ONCE(!ndlp, "**** %s, put ref on NULL ndlp!", __func__); 6708 } 6709 6710 return ndlp ? kref_put(&ndlp->kref, lpfc_nlp_release) : 0; 6711 } 6712 6713 /* This routine free's the specified nodelist if it is not in use 6714 * by any other discovery thread. This routine returns 1 if the 6715 * ndlp has been freed. A return value of 0 indicates the ndlp is 6716 * not yet been released. 6717 */ 6718 int 6719 lpfc_nlp_not_used(struct lpfc_nodelist *ndlp) 6720 { 6721 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE, 6722 "node not used: did:x%x flg:x%x refcnt:x%x", 6723 ndlp->nlp_DID, ndlp->nlp_flag, 6724 kref_read(&ndlp->kref)); 6725 6726 if (kref_read(&ndlp->kref) == 1) 6727 if (lpfc_nlp_put(ndlp)) 6728 return 1; 6729 return 0; 6730 } 6731 6732 /** 6733 * lpfc_fcf_inuse - Check if FCF can be unregistered. 6734 * @phba: Pointer to hba context object. 6735 * 6736 * This function iterate through all FC nodes associated 6737 * will all vports to check if there is any node with 6738 * fc_rports associated with it. If there is an fc_rport 6739 * associated with the node, then the node is either in 6740 * discovered state or its devloss_timer is pending. 6741 */ 6742 static int 6743 lpfc_fcf_inuse(struct lpfc_hba *phba) 6744 { 6745 struct lpfc_vport **vports; 6746 int i, ret = 0; 6747 struct lpfc_nodelist *ndlp; 6748 struct Scsi_Host *shost; 6749 6750 vports = lpfc_create_vport_work_array(phba); 6751 6752 /* If driver cannot allocate memory, indicate fcf is in use */ 6753 if (!vports) 6754 return 1; 6755 6756 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) { 6757 shost = lpfc_shost_from_vport(vports[i]); 6758 spin_lock_irq(shost->host_lock); 6759 /* 6760 * IF the CVL_RCVD bit is not set then we have sent the 6761 * flogi. 6762 * If dev_loss fires while we are waiting we do not want to 6763 * unreg the fcf. 6764 */ 6765 if (!(vports[i]->fc_flag & FC_VPORT_CVL_RCVD)) { 6766 spin_unlock_irq(shost->host_lock); 6767 ret = 1; 6768 goto out; 6769 } 6770 list_for_each_entry(ndlp, &vports[i]->fc_nodes, nlp_listp) { 6771 if (ndlp->rport && 6772 (ndlp->rport->roles & FC_RPORT_ROLE_FCP_TARGET)) { 6773 ret = 1; 6774 spin_unlock_irq(shost->host_lock); 6775 goto out; 6776 } else if (ndlp->nlp_flag & NLP_RPI_REGISTERED) { 6777 ret = 1; 6778 lpfc_printf_log(phba, KERN_INFO, 6779 LOG_NODE | LOG_DISCOVERY, 6780 "2624 RPI %x DID %x flag %x " 6781 "still logged in\n", 6782 ndlp->nlp_rpi, ndlp->nlp_DID, 6783 ndlp->nlp_flag); 6784 } 6785 } 6786 spin_unlock_irq(shost->host_lock); 6787 } 6788 out: 6789 lpfc_destroy_vport_work_array(phba, vports); 6790 return ret; 6791 } 6792 6793 /** 6794 * lpfc_unregister_vfi_cmpl - Completion handler for unreg vfi. 6795 * @phba: Pointer to hba context object. 6796 * @mboxq: Pointer to mailbox object. 6797 * 6798 * This function frees memory associated with the mailbox command. 6799 */ 6800 void 6801 lpfc_unregister_vfi_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq) 6802 { 6803 struct lpfc_vport *vport = mboxq->vport; 6804 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 6805 6806 if (mboxq->u.mb.mbxStatus) { 6807 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 6808 "2555 UNREG_VFI mbxStatus error x%x " 6809 "HBA state x%x\n", 6810 mboxq->u.mb.mbxStatus, vport->port_state); 6811 } 6812 spin_lock_irq(shost->host_lock); 6813 phba->pport->fc_flag &= ~FC_VFI_REGISTERED; 6814 spin_unlock_irq(shost->host_lock); 6815 mempool_free(mboxq, phba->mbox_mem_pool); 6816 return; 6817 } 6818 6819 /** 6820 * lpfc_unregister_fcfi_cmpl - Completion handler for unreg fcfi. 6821 * @phba: Pointer to hba context object. 6822 * @mboxq: Pointer to mailbox object. 6823 * 6824 * This function frees memory associated with the mailbox command. 6825 */ 6826 static void 6827 lpfc_unregister_fcfi_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq) 6828 { 6829 struct lpfc_vport *vport = mboxq->vport; 6830 6831 if (mboxq->u.mb.mbxStatus) { 6832 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 6833 "2550 UNREG_FCFI mbxStatus error x%x " 6834 "HBA state x%x\n", 6835 mboxq->u.mb.mbxStatus, vport->port_state); 6836 } 6837 mempool_free(mboxq, phba->mbox_mem_pool); 6838 return; 6839 } 6840 6841 /** 6842 * lpfc_unregister_fcf_prep - Unregister fcf record preparation 6843 * @phba: Pointer to hba context object. 6844 * 6845 * This function prepare the HBA for unregistering the currently registered 6846 * FCF from the HBA. It performs unregistering, in order, RPIs, VPIs, and 6847 * VFIs. 6848 */ 6849 int 6850 lpfc_unregister_fcf_prep(struct lpfc_hba *phba) 6851 { 6852 struct lpfc_vport **vports; 6853 struct lpfc_nodelist *ndlp; 6854 struct Scsi_Host *shost; 6855 int i = 0, rc; 6856 6857 /* Unregister RPIs */ 6858 if (lpfc_fcf_inuse(phba)) 6859 lpfc_unreg_hba_rpis(phba); 6860 6861 /* At this point, all discovery is aborted */ 6862 phba->pport->port_state = LPFC_VPORT_UNKNOWN; 6863 6864 /* Unregister VPIs */ 6865 vports = lpfc_create_vport_work_array(phba); 6866 if (vports && (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)) 6867 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) { 6868 /* Stop FLOGI/FDISC retries */ 6869 ndlp = lpfc_findnode_did(vports[i], Fabric_DID); 6870 if (ndlp) 6871 lpfc_cancel_retry_delay_tmo(vports[i], ndlp); 6872 lpfc_cleanup_pending_mbox(vports[i]); 6873 if (phba->sli_rev == LPFC_SLI_REV4) 6874 lpfc_sli4_unreg_all_rpis(vports[i]); 6875 lpfc_mbx_unreg_vpi(vports[i]); 6876 shost = lpfc_shost_from_vport(vports[i]); 6877 spin_lock_irq(shost->host_lock); 6878 vports[i]->fc_flag |= FC_VPORT_NEEDS_INIT_VPI; 6879 vports[i]->vpi_state &= ~LPFC_VPI_REGISTERED; 6880 spin_unlock_irq(shost->host_lock); 6881 } 6882 lpfc_destroy_vport_work_array(phba, vports); 6883 if (i == 0 && (!(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED))) { 6884 ndlp = lpfc_findnode_did(phba->pport, Fabric_DID); 6885 if (ndlp) 6886 lpfc_cancel_retry_delay_tmo(phba->pport, ndlp); 6887 lpfc_cleanup_pending_mbox(phba->pport); 6888 if (phba->sli_rev == LPFC_SLI_REV4) 6889 lpfc_sli4_unreg_all_rpis(phba->pport); 6890 lpfc_mbx_unreg_vpi(phba->pport); 6891 shost = lpfc_shost_from_vport(phba->pport); 6892 spin_lock_irq(shost->host_lock); 6893 phba->pport->fc_flag |= FC_VPORT_NEEDS_INIT_VPI; 6894 phba->pport->vpi_state &= ~LPFC_VPI_REGISTERED; 6895 spin_unlock_irq(shost->host_lock); 6896 } 6897 6898 /* Cleanup any outstanding ELS commands */ 6899 lpfc_els_flush_all_cmd(phba); 6900 6901 /* Unregister the physical port VFI */ 6902 rc = lpfc_issue_unreg_vfi(phba->pport); 6903 return rc; 6904 } 6905 6906 /** 6907 * lpfc_sli4_unregister_fcf - Unregister currently registered FCF record 6908 * @phba: Pointer to hba context object. 6909 * 6910 * This function issues synchronous unregister FCF mailbox command to HBA to 6911 * unregister the currently registered FCF record. The driver does not reset 6912 * the driver FCF usage state flags. 6913 * 6914 * Return 0 if successfully issued, none-zero otherwise. 6915 */ 6916 int 6917 lpfc_sli4_unregister_fcf(struct lpfc_hba *phba) 6918 { 6919 LPFC_MBOXQ_t *mbox; 6920 int rc; 6921 6922 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 6923 if (!mbox) { 6924 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 6925 "2551 UNREG_FCFI mbox allocation failed" 6926 "HBA state x%x\n", phba->pport->port_state); 6927 return -ENOMEM; 6928 } 6929 lpfc_unreg_fcfi(mbox, phba->fcf.fcfi); 6930 mbox->vport = phba->pport; 6931 mbox->mbox_cmpl = lpfc_unregister_fcfi_cmpl; 6932 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT); 6933 6934 if (rc == MBX_NOT_FINISHED) { 6935 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 6936 "2552 Unregister FCFI command failed rc x%x " 6937 "HBA state x%x\n", 6938 rc, phba->pport->port_state); 6939 return -EINVAL; 6940 } 6941 return 0; 6942 } 6943 6944 /** 6945 * lpfc_unregister_fcf_rescan - Unregister currently registered fcf and rescan 6946 * @phba: Pointer to hba context object. 6947 * 6948 * This function unregisters the currently reigstered FCF. This function 6949 * also tries to find another FCF for discovery by rescan the HBA FCF table. 6950 */ 6951 void 6952 lpfc_unregister_fcf_rescan(struct lpfc_hba *phba) 6953 { 6954 int rc; 6955 6956 /* Preparation for unregistering fcf */ 6957 rc = lpfc_unregister_fcf_prep(phba); 6958 if (rc) { 6959 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 6960 "2748 Failed to prepare for unregistering " 6961 "HBA's FCF record: rc=%d\n", rc); 6962 return; 6963 } 6964 6965 /* Now, unregister FCF record and reset HBA FCF state */ 6966 rc = lpfc_sli4_unregister_fcf(phba); 6967 if (rc) 6968 return; 6969 /* Reset HBA FCF states after successful unregister FCF */ 6970 phba->fcf.fcf_flag = 0; 6971 phba->fcf.current_rec.flag = 0; 6972 6973 /* 6974 * If driver is not unloading, check if there is any other 6975 * FCF record that can be used for discovery. 6976 */ 6977 if ((phba->pport->load_flag & FC_UNLOADING) || 6978 (phba->link_state < LPFC_LINK_UP)) 6979 return; 6980 6981 /* This is considered as the initial FCF discovery scan */ 6982 spin_lock_irq(&phba->hbalock); 6983 phba->fcf.fcf_flag |= FCF_INIT_DISC; 6984 spin_unlock_irq(&phba->hbalock); 6985 6986 /* Reset FCF roundrobin bmask for new discovery */ 6987 lpfc_sli4_clear_fcf_rr_bmask(phba); 6988 6989 rc = lpfc_sli4_fcf_scan_read_fcf_rec(phba, LPFC_FCOE_FCF_GET_FIRST); 6990 6991 if (rc) { 6992 spin_lock_irq(&phba->hbalock); 6993 phba->fcf.fcf_flag &= ~FCF_INIT_DISC; 6994 spin_unlock_irq(&phba->hbalock); 6995 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 6996 "2553 lpfc_unregister_unused_fcf failed " 6997 "to read FCF record HBA state x%x\n", 6998 phba->pport->port_state); 6999 } 7000 } 7001 7002 /** 7003 * lpfc_unregister_fcf - Unregister the currently registered fcf record 7004 * @phba: Pointer to hba context object. 7005 * 7006 * This function just unregisters the currently reigstered FCF. It does not 7007 * try to find another FCF for discovery. 7008 */ 7009 void 7010 lpfc_unregister_fcf(struct lpfc_hba *phba) 7011 { 7012 int rc; 7013 7014 /* Preparation for unregistering fcf */ 7015 rc = lpfc_unregister_fcf_prep(phba); 7016 if (rc) { 7017 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 7018 "2749 Failed to prepare for unregistering " 7019 "HBA's FCF record: rc=%d\n", rc); 7020 return; 7021 } 7022 7023 /* Now, unregister FCF record and reset HBA FCF state */ 7024 rc = lpfc_sli4_unregister_fcf(phba); 7025 if (rc) 7026 return; 7027 /* Set proper HBA FCF states after successful unregister FCF */ 7028 spin_lock_irq(&phba->hbalock); 7029 phba->fcf.fcf_flag &= ~FCF_REGISTERED; 7030 spin_unlock_irq(&phba->hbalock); 7031 } 7032 7033 /** 7034 * lpfc_unregister_unused_fcf - Unregister FCF if all devices are disconnected. 7035 * @phba: Pointer to hba context object. 7036 * 7037 * This function check if there are any connected remote port for the FCF and 7038 * if all the devices are disconnected, this function unregister FCFI. 7039 * This function also tries to use another FCF for discovery. 7040 */ 7041 void 7042 lpfc_unregister_unused_fcf(struct lpfc_hba *phba) 7043 { 7044 /* 7045 * If HBA is not running in FIP mode, if HBA does not support 7046 * FCoE, if FCF discovery is ongoing, or if FCF has not been 7047 * registered, do nothing. 7048 */ 7049 spin_lock_irq(&phba->hbalock); 7050 if (!(phba->hba_flag & HBA_FCOE_MODE) || 7051 !(phba->fcf.fcf_flag & FCF_REGISTERED) || 7052 !(phba->hba_flag & HBA_FIP_SUPPORT) || 7053 (phba->fcf.fcf_flag & FCF_DISCOVERY) || 7054 (phba->pport->port_state == LPFC_FLOGI)) { 7055 spin_unlock_irq(&phba->hbalock); 7056 return; 7057 } 7058 spin_unlock_irq(&phba->hbalock); 7059 7060 if (lpfc_fcf_inuse(phba)) 7061 return; 7062 7063 lpfc_unregister_fcf_rescan(phba); 7064 } 7065 7066 /** 7067 * lpfc_read_fcf_conn_tbl - Create driver FCF connection table. 7068 * @phba: Pointer to hba context object. 7069 * @buff: Buffer containing the FCF connection table as in the config 7070 * region. 7071 * This function create driver data structure for the FCF connection 7072 * record table read from config region 23. 7073 */ 7074 static void 7075 lpfc_read_fcf_conn_tbl(struct lpfc_hba *phba, 7076 uint8_t *buff) 7077 { 7078 struct lpfc_fcf_conn_entry *conn_entry, *next_conn_entry; 7079 struct lpfc_fcf_conn_hdr *conn_hdr; 7080 struct lpfc_fcf_conn_rec *conn_rec; 7081 uint32_t record_count; 7082 int i; 7083 7084 /* Free the current connect table */ 7085 list_for_each_entry_safe(conn_entry, next_conn_entry, 7086 &phba->fcf_conn_rec_list, list) { 7087 list_del_init(&conn_entry->list); 7088 kfree(conn_entry); 7089 } 7090 7091 conn_hdr = (struct lpfc_fcf_conn_hdr *) buff; 7092 record_count = conn_hdr->length * sizeof(uint32_t)/ 7093 sizeof(struct lpfc_fcf_conn_rec); 7094 7095 conn_rec = (struct lpfc_fcf_conn_rec *) 7096 (buff + sizeof(struct lpfc_fcf_conn_hdr)); 7097 7098 for (i = 0; i < record_count; i++) { 7099 if (!(conn_rec[i].flags & FCFCNCT_VALID)) 7100 continue; 7101 conn_entry = kzalloc(sizeof(struct lpfc_fcf_conn_entry), 7102 GFP_KERNEL); 7103 if (!conn_entry) { 7104 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 7105 "2566 Failed to allocate connection" 7106 " table entry\n"); 7107 return; 7108 } 7109 7110 memcpy(&conn_entry->conn_rec, &conn_rec[i], 7111 sizeof(struct lpfc_fcf_conn_rec)); 7112 list_add_tail(&conn_entry->list, 7113 &phba->fcf_conn_rec_list); 7114 } 7115 7116 if (!list_empty(&phba->fcf_conn_rec_list)) { 7117 i = 0; 7118 list_for_each_entry(conn_entry, &phba->fcf_conn_rec_list, 7119 list) { 7120 conn_rec = &conn_entry->conn_rec; 7121 lpfc_printf_log(phba, KERN_INFO, LOG_INIT, 7122 "3345 FCF connection list rec[%02d]: " 7123 "flags:x%04x, vtag:x%04x, " 7124 "fabric_name:x%02x:%02x:%02x:%02x:" 7125 "%02x:%02x:%02x:%02x, " 7126 "switch_name:x%02x:%02x:%02x:%02x:" 7127 "%02x:%02x:%02x:%02x\n", i++, 7128 conn_rec->flags, conn_rec->vlan_tag, 7129 conn_rec->fabric_name[0], 7130 conn_rec->fabric_name[1], 7131 conn_rec->fabric_name[2], 7132 conn_rec->fabric_name[3], 7133 conn_rec->fabric_name[4], 7134 conn_rec->fabric_name[5], 7135 conn_rec->fabric_name[6], 7136 conn_rec->fabric_name[7], 7137 conn_rec->switch_name[0], 7138 conn_rec->switch_name[1], 7139 conn_rec->switch_name[2], 7140 conn_rec->switch_name[3], 7141 conn_rec->switch_name[4], 7142 conn_rec->switch_name[5], 7143 conn_rec->switch_name[6], 7144 conn_rec->switch_name[7]); 7145 } 7146 } 7147 } 7148 7149 /** 7150 * lpfc_read_fcoe_param - Read FCoe parameters from conf region.. 7151 * @phba: Pointer to hba context object. 7152 * @buff: Buffer containing the FCoE parameter data structure. 7153 * 7154 * This function update driver data structure with config 7155 * parameters read from config region 23. 7156 */ 7157 static void 7158 lpfc_read_fcoe_param(struct lpfc_hba *phba, 7159 uint8_t *buff) 7160 { 7161 struct lpfc_fip_param_hdr *fcoe_param_hdr; 7162 struct lpfc_fcoe_params *fcoe_param; 7163 7164 fcoe_param_hdr = (struct lpfc_fip_param_hdr *) 7165 buff; 7166 fcoe_param = (struct lpfc_fcoe_params *) 7167 (buff + sizeof(struct lpfc_fip_param_hdr)); 7168 7169 if ((fcoe_param_hdr->parm_version != FIPP_VERSION) || 7170 (fcoe_param_hdr->length != FCOE_PARAM_LENGTH)) 7171 return; 7172 7173 if (fcoe_param_hdr->parm_flags & FIPP_VLAN_VALID) { 7174 phba->valid_vlan = 1; 7175 phba->vlan_id = le16_to_cpu(fcoe_param->vlan_tag) & 7176 0xFFF; 7177 } 7178 7179 phba->fc_map[0] = fcoe_param->fc_map[0]; 7180 phba->fc_map[1] = fcoe_param->fc_map[1]; 7181 phba->fc_map[2] = fcoe_param->fc_map[2]; 7182 return; 7183 } 7184 7185 /** 7186 * lpfc_get_rec_conf23 - Get a record type in config region data. 7187 * @buff: Buffer containing config region 23 data. 7188 * @size: Size of the data buffer. 7189 * @rec_type: Record type to be searched. 7190 * 7191 * This function searches config region data to find the beginning 7192 * of the record specified by record_type. If record found, this 7193 * function return pointer to the record else return NULL. 7194 */ 7195 static uint8_t * 7196 lpfc_get_rec_conf23(uint8_t *buff, uint32_t size, uint8_t rec_type) 7197 { 7198 uint32_t offset = 0, rec_length; 7199 7200 if ((buff[0] == LPFC_REGION23_LAST_REC) || 7201 (size < sizeof(uint32_t))) 7202 return NULL; 7203 7204 rec_length = buff[offset + 1]; 7205 7206 /* 7207 * One TLV record has one word header and number of data words 7208 * specified in the rec_length field of the record header. 7209 */ 7210 while ((offset + rec_length * sizeof(uint32_t) + sizeof(uint32_t)) 7211 <= size) { 7212 if (buff[offset] == rec_type) 7213 return &buff[offset]; 7214 7215 if (buff[offset] == LPFC_REGION23_LAST_REC) 7216 return NULL; 7217 7218 offset += rec_length * sizeof(uint32_t) + sizeof(uint32_t); 7219 rec_length = buff[offset + 1]; 7220 } 7221 return NULL; 7222 } 7223 7224 /** 7225 * lpfc_parse_fcoe_conf - Parse FCoE config data read from config region 23. 7226 * @phba: Pointer to lpfc_hba data structure. 7227 * @buff: Buffer containing config region 23 data. 7228 * @size: Size of the data buffer. 7229 * 7230 * This function parses the FCoE config parameters in config region 23 and 7231 * populate driver data structure with the parameters. 7232 */ 7233 void 7234 lpfc_parse_fcoe_conf(struct lpfc_hba *phba, 7235 uint8_t *buff, 7236 uint32_t size) 7237 { 7238 uint32_t offset = 0; 7239 uint8_t *rec_ptr; 7240 7241 /* 7242 * If data size is less than 2 words signature and version cannot be 7243 * verified. 7244 */ 7245 if (size < 2*sizeof(uint32_t)) 7246 return; 7247 7248 /* Check the region signature first */ 7249 if (memcmp(buff, LPFC_REGION23_SIGNATURE, 4)) { 7250 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 7251 "2567 Config region 23 has bad signature\n"); 7252 return; 7253 } 7254 7255 offset += 4; 7256 7257 /* Check the data structure version */ 7258 if (buff[offset] != LPFC_REGION23_VERSION) { 7259 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 7260 "2568 Config region 23 has bad version\n"); 7261 return; 7262 } 7263 offset += 4; 7264 7265 /* Read FCoE param record */ 7266 rec_ptr = lpfc_get_rec_conf23(&buff[offset], 7267 size - offset, FCOE_PARAM_TYPE); 7268 if (rec_ptr) 7269 lpfc_read_fcoe_param(phba, rec_ptr); 7270 7271 /* Read FCF connection table */ 7272 rec_ptr = lpfc_get_rec_conf23(&buff[offset], 7273 size - offset, FCOE_CONN_TBL_TYPE); 7274 if (rec_ptr) 7275 lpfc_read_fcf_conn_tbl(phba, rec_ptr); 7276 7277 } 7278