1/******************************************************************* 2 * This file is part of the Emulex Linux Device Driver for * 3 * Fibre Channel Host Bus Adapters. * 4 * Copyright (C) 2004-2009 Emulex. All rights reserved. * 5 * EMULEX and SLI are trademarks of Emulex. * 6 * www.emulex.com * 7 * Portions Copyright (C) 2004-2005 Christoph Hellwig * 8 * * 9 * This program is free software; you can redistribute it and/or * 10 * modify it under the terms of version 2 of the GNU General * 11 * Public License as published by the Free Software Foundation. * 12 * This program is distributed in the hope that it will be useful. * 13 * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND * 14 * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, * 15 * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE * 16 * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD * 17 * TO BE LEGALLY INVALID. See the GNU General Public License for * 18 * more details, a copy of which can be found in the file COPYING * 19 * included with this package. * 20 *******************************************************************/ 21 22#include <linux/blkdev.h> 23#include <linux/slab.h> 24#include <linux/pci.h> 25#include <linux/kthread.h> 26#include <linux/interrupt.h> 27 28#include <scsi/scsi.h> 29#include <scsi/scsi_device.h> 30#include <scsi/scsi_host.h> 31#include <scsi/scsi_transport_fc.h> 32 33#include "lpfc_hw4.h" 34#include "lpfc_hw.h" 35#include "lpfc_nl.h" 36#include "lpfc_disc.h" 37#include "lpfc_sli.h" 38#include "lpfc_sli4.h" 39#include "lpfc_scsi.h" 40#include "lpfc.h" 41#include "lpfc_logmsg.h" 42#include "lpfc_crtn.h" 43#include "lpfc_vport.h" 44#include "lpfc_debugfs.h" 45 46/* AlpaArray for assignment of scsid for scan-down and bind_method */ 47static uint8_t lpfcAlpaArray[] = { 48 0xEF, 0xE8, 0xE4, 0xE2, 0xE1, 0xE0, 0xDC, 0xDA, 0xD9, 0xD6, 49 0xD5, 0xD4, 0xD3, 0xD2, 0xD1, 0xCE, 0xCD, 0xCC, 0xCB, 0xCA, 50 0xC9, 0xC7, 0xC6, 0xC5, 0xC3, 0xBC, 0xBA, 0xB9, 0xB6, 0xB5, 51 0xB4, 0xB3, 0xB2, 0xB1, 0xAE, 0xAD, 0xAC, 0xAB, 0xAA, 0xA9, 52 0xA7, 0xA6, 0xA5, 0xA3, 0x9F, 0x9E, 0x9D, 0x9B, 0x98, 0x97, 53 0x90, 0x8F, 0x88, 0x84, 0x82, 0x81, 0x80, 0x7C, 0x7A, 0x79, 54 0x76, 0x75, 0x74, 0x73, 0x72, 0x71, 0x6E, 0x6D, 0x6C, 0x6B, 55 0x6A, 0x69, 0x67, 0x66, 0x65, 0x63, 0x5C, 0x5A, 0x59, 0x56, 56 0x55, 0x54, 0x53, 0x52, 0x51, 0x4E, 0x4D, 0x4C, 0x4B, 0x4A, 57 0x49, 0x47, 0x46, 0x45, 0x43, 0x3C, 0x3A, 0x39, 0x36, 0x35, 58 0x34, 0x33, 0x32, 0x31, 0x2E, 0x2D, 0x2C, 0x2B, 0x2A, 0x29, 59 0x27, 0x26, 0x25, 0x23, 0x1F, 0x1E, 0x1D, 0x1B, 0x18, 0x17, 60 0x10, 0x0F, 0x08, 0x04, 0x02, 0x01 61}; 62 63static void lpfc_disc_timeout_handler(struct lpfc_vport *); 64static void lpfc_disc_flush_list(struct lpfc_vport *vport); 65static void lpfc_unregister_fcfi_cmpl(struct lpfc_hba *, LPFC_MBOXQ_t *); 66 67void 68lpfc_terminate_rport_io(struct fc_rport *rport) 69{ 70 struct lpfc_rport_data *rdata; 71 struct lpfc_nodelist * ndlp; 72 struct lpfc_hba *phba; 73 74 rdata = rport->dd_data; 75 ndlp = rdata->pnode; 76 77 if (!ndlp || !NLP_CHK_NODE_ACT(ndlp)) { 78 if (rport->roles & FC_RPORT_ROLE_FCP_TARGET) 79 printk(KERN_ERR "Cannot find remote node" 80 " to terminate I/O Data x%x\n", 81 rport->port_id); 82 return; 83 } 84 85 phba = ndlp->phba; 86 87 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_RPORT, 88 "rport terminate: sid:x%x did:x%x flg:x%x", 89 ndlp->nlp_sid, ndlp->nlp_DID, ndlp->nlp_flag); 90 91 if (ndlp->nlp_sid != NLP_NO_SID) { 92 lpfc_sli_abort_iocb(ndlp->vport, 93 &phba->sli.ring[phba->sli.fcp_ring], 94 ndlp->nlp_sid, 0, LPFC_CTX_TGT); 95 } 96} 97 98/* 99 * This function will be called when dev_loss_tmo fire. 100 */ 101void 102lpfc_dev_loss_tmo_callbk(struct fc_rport *rport) 103{ 104 struct lpfc_rport_data *rdata; 105 struct lpfc_nodelist * ndlp; 106 struct lpfc_vport *vport; 107 struct lpfc_hba *phba; 108 struct lpfc_work_evt *evtp; 109 int put_node; 110 int put_rport; 111 112 rdata = rport->dd_data; 113 ndlp = rdata->pnode; 114 if (!ndlp || !NLP_CHK_NODE_ACT(ndlp)) 115 return; 116 117 vport = ndlp->vport; 118 phba = vport->phba; 119 120 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT, 121 "rport devlosscb: sid:x%x did:x%x flg:x%x", 122 ndlp->nlp_sid, ndlp->nlp_DID, ndlp->nlp_flag); 123 124 /* Don't defer this if we are in the process of deleting the vport 125 * or unloading the driver. The unload will cleanup the node 126 * appropriately we just need to cleanup the ndlp rport info here. 127 */ 128 if (vport->load_flag & FC_UNLOADING) { 129 put_node = rdata->pnode != NULL; 130 put_rport = ndlp->rport != NULL; 131 rdata->pnode = NULL; 132 ndlp->rport = NULL; 133 if (put_node) 134 lpfc_nlp_put(ndlp); 135 if (put_rport) 136 put_device(&rport->dev); 137 return; 138 } 139 140 if (ndlp->nlp_state == NLP_STE_MAPPED_NODE) 141 return; 142 143 evtp = &ndlp->dev_loss_evt; 144 145 if (!list_empty(&evtp->evt_listp)) 146 return; 147 148 spin_lock_irq(&phba->hbalock); 149 /* We need to hold the node by incrementing the reference 150 * count until this queued work is done 151 */ 152 evtp->evt_arg1 = lpfc_nlp_get(ndlp); 153 if (evtp->evt_arg1) { 154 evtp->evt = LPFC_EVT_DEV_LOSS; 155 list_add_tail(&evtp->evt_listp, &phba->work_list); 156 lpfc_worker_wake_up(phba); 157 } 158 spin_unlock_irq(&phba->hbalock); 159 160 return; 161} 162 163/* 164 * This function is called from the worker thread when dev_loss_tmo 165 * expire. 166 */ 167static void 168lpfc_dev_loss_tmo_handler(struct lpfc_nodelist *ndlp) 169{ 170 struct lpfc_rport_data *rdata; 171 struct fc_rport *rport; 172 struct lpfc_vport *vport; 173 struct lpfc_hba *phba; 174 uint8_t *name; 175 int put_node; 176 int put_rport; 177 int warn_on = 0; 178 179 rport = ndlp->rport; 180 181 if (!rport) 182 return; 183 184 rdata = rport->dd_data; 185 name = (uint8_t *) &ndlp->nlp_portname; 186 vport = ndlp->vport; 187 phba = vport->phba; 188 189 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT, 190 "rport devlosstmo:did:x%x type:x%x id:x%x", 191 ndlp->nlp_DID, ndlp->nlp_type, rport->scsi_target_id); 192 193 /* Don't defer this if we are in the process of deleting the vport 194 * or unloading the driver. The unload will cleanup the node 195 * appropriately we just need to cleanup the ndlp rport info here. 196 */ 197 if (vport->load_flag & FC_UNLOADING) { 198 if (ndlp->nlp_sid != NLP_NO_SID) { 199 /* flush the target */ 200 lpfc_sli_abort_iocb(vport, 201 &phba->sli.ring[phba->sli.fcp_ring], 202 ndlp->nlp_sid, 0, LPFC_CTX_TGT); 203 } 204 put_node = rdata->pnode != NULL; 205 put_rport = ndlp->rport != NULL; 206 rdata->pnode = NULL; 207 ndlp->rport = NULL; 208 if (put_node) 209 lpfc_nlp_put(ndlp); 210 if (put_rport) 211 put_device(&rport->dev); 212 return; 213 } 214 215 if (ndlp->nlp_state == NLP_STE_MAPPED_NODE) { 216 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, 217 "0284 Devloss timeout Ignored on " 218 "WWPN %x:%x:%x:%x:%x:%x:%x:%x " 219 "NPort x%x\n", 220 *name, *(name+1), *(name+2), *(name+3), 221 *(name+4), *(name+5), *(name+6), *(name+7), 222 ndlp->nlp_DID); 223 return; 224 } 225 226 if (ndlp->nlp_type & NLP_FABRIC) { 227 /* We will clean up these Nodes in linkup */ 228 put_node = rdata->pnode != NULL; 229 put_rport = ndlp->rport != NULL; 230 rdata->pnode = NULL; 231 ndlp->rport = NULL; 232 if (put_node) 233 lpfc_nlp_put(ndlp); 234 if (put_rport) 235 put_device(&rport->dev); 236 return; 237 } 238 239 if (ndlp->nlp_sid != NLP_NO_SID) { 240 warn_on = 1; 241 /* flush the target */ 242 lpfc_sli_abort_iocb(vport, &phba->sli.ring[phba->sli.fcp_ring], 243 ndlp->nlp_sid, 0, LPFC_CTX_TGT); 244 } 245 246 if (warn_on) { 247 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY, 248 "0203 Devloss timeout on " 249 "WWPN %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x " 250 "NPort x%06x Data: x%x x%x x%x\n", 251 *name, *(name+1), *(name+2), *(name+3), 252 *(name+4), *(name+5), *(name+6), *(name+7), 253 ndlp->nlp_DID, ndlp->nlp_flag, 254 ndlp->nlp_state, ndlp->nlp_rpi); 255 } else { 256 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, 257 "0204 Devloss timeout on " 258 "WWPN %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x " 259 "NPort x%06x Data: x%x x%x x%x\n", 260 *name, *(name+1), *(name+2), *(name+3), 261 *(name+4), *(name+5), *(name+6), *(name+7), 262 ndlp->nlp_DID, ndlp->nlp_flag, 263 ndlp->nlp_state, ndlp->nlp_rpi); 264 } 265 266 put_node = rdata->pnode != NULL; 267 put_rport = ndlp->rport != NULL; 268 rdata->pnode = NULL; 269 ndlp->rport = NULL; 270 if (put_node) 271 lpfc_nlp_put(ndlp); 272 if (put_rport) 273 put_device(&rport->dev); 274 275 if (!(vport->load_flag & FC_UNLOADING) && 276 !(ndlp->nlp_flag & NLP_DELAY_TMO) && 277 !(ndlp->nlp_flag & NLP_NPR_2B_DISC) && 278 (ndlp->nlp_state != NLP_STE_UNMAPPED_NODE) && 279 (ndlp->nlp_state != NLP_STE_REG_LOGIN_ISSUE) && 280 (ndlp->nlp_state != NLP_STE_PRLI_ISSUE)) 281 lpfc_disc_state_machine(vport, ndlp, NULL, NLP_EVT_DEVICE_RM); 282 283 lpfc_unregister_unused_fcf(phba); 284} 285 286/** 287 * lpfc_alloc_fast_evt - Allocates data structure for posting event 288 * @phba: Pointer to hba context object. 289 * 290 * This function is called from the functions which need to post 291 * events from interrupt context. This function allocates data 292 * structure required for posting event. It also keeps track of 293 * number of events pending and prevent event storm when there are 294 * too many events. 295 **/ 296struct lpfc_fast_path_event * 297lpfc_alloc_fast_evt(struct lpfc_hba *phba) { 298 struct lpfc_fast_path_event *ret; 299 300 /* If there are lot of fast event do not exhaust memory due to this */ 301 if (atomic_read(&phba->fast_event_count) > LPFC_MAX_EVT_COUNT) 302 return NULL; 303 304 ret = kzalloc(sizeof(struct lpfc_fast_path_event), 305 GFP_ATOMIC); 306 if (ret) { 307 atomic_inc(&phba->fast_event_count); 308 INIT_LIST_HEAD(&ret->work_evt.evt_listp); 309 ret->work_evt.evt = LPFC_EVT_FASTPATH_MGMT_EVT; 310 } 311 return ret; 312} 313 314/** 315 * lpfc_free_fast_evt - Frees event data structure 316 * @phba: Pointer to hba context object. 317 * @evt: Event object which need to be freed. 318 * 319 * This function frees the data structure required for posting 320 * events. 321 **/ 322void 323lpfc_free_fast_evt(struct lpfc_hba *phba, 324 struct lpfc_fast_path_event *evt) { 325 326 atomic_dec(&phba->fast_event_count); 327 kfree(evt); 328} 329 330/** 331 * lpfc_send_fastpath_evt - Posts events generated from fast path 332 * @phba: Pointer to hba context object. 333 * @evtp: Event data structure. 334 * 335 * This function is called from worker thread, when the interrupt 336 * context need to post an event. This function posts the event 337 * to fc transport netlink interface. 338 **/ 339static void 340lpfc_send_fastpath_evt(struct lpfc_hba *phba, 341 struct lpfc_work_evt *evtp) 342{ 343 unsigned long evt_category, evt_sub_category; 344 struct lpfc_fast_path_event *fast_evt_data; 345 char *evt_data; 346 uint32_t evt_data_size; 347 struct Scsi_Host *shost; 348 349 fast_evt_data = container_of(evtp, struct lpfc_fast_path_event, 350 work_evt); 351 352 evt_category = (unsigned long) fast_evt_data->un.fabric_evt.event_type; 353 evt_sub_category = (unsigned long) fast_evt_data->un. 354 fabric_evt.subcategory; 355 shost = lpfc_shost_from_vport(fast_evt_data->vport); 356 if (evt_category == FC_REG_FABRIC_EVENT) { 357 if (evt_sub_category == LPFC_EVENT_FCPRDCHKERR) { 358 evt_data = (char *) &fast_evt_data->un.read_check_error; 359 evt_data_size = sizeof(fast_evt_data->un. 360 read_check_error); 361 } else if ((evt_sub_category == LPFC_EVENT_FABRIC_BUSY) || 362 (evt_sub_category == LPFC_EVENT_PORT_BUSY)) { 363 evt_data = (char *) &fast_evt_data->un.fabric_evt; 364 evt_data_size = sizeof(fast_evt_data->un.fabric_evt); 365 } else { 366 lpfc_free_fast_evt(phba, fast_evt_data); 367 return; 368 } 369 } else if (evt_category == FC_REG_SCSI_EVENT) { 370 switch (evt_sub_category) { 371 case LPFC_EVENT_QFULL: 372 case LPFC_EVENT_DEVBSY: 373 evt_data = (char *) &fast_evt_data->un.scsi_evt; 374 evt_data_size = sizeof(fast_evt_data->un.scsi_evt); 375 break; 376 case LPFC_EVENT_CHECK_COND: 377 evt_data = (char *) &fast_evt_data->un.check_cond_evt; 378 evt_data_size = sizeof(fast_evt_data->un. 379 check_cond_evt); 380 break; 381 case LPFC_EVENT_VARQUEDEPTH: 382 evt_data = (char *) &fast_evt_data->un.queue_depth_evt; 383 evt_data_size = sizeof(fast_evt_data->un. 384 queue_depth_evt); 385 break; 386 default: 387 lpfc_free_fast_evt(phba, fast_evt_data); 388 return; 389 } 390 } else { 391 lpfc_free_fast_evt(phba, fast_evt_data); 392 return; 393 } 394 395 fc_host_post_vendor_event(shost, 396 fc_get_event_number(), 397 evt_data_size, 398 evt_data, 399 LPFC_NL_VENDOR_ID); 400 401 lpfc_free_fast_evt(phba, fast_evt_data); 402 return; 403} 404 405static void 406lpfc_work_list_done(struct lpfc_hba *phba) 407{ 408 struct lpfc_work_evt *evtp = NULL; 409 struct lpfc_nodelist *ndlp; 410 int free_evt; 411 412 spin_lock_irq(&phba->hbalock); 413 while (!list_empty(&phba->work_list)) { 414 list_remove_head((&phba->work_list), evtp, typeof(*evtp), 415 evt_listp); 416 spin_unlock_irq(&phba->hbalock); 417 free_evt = 1; 418 switch (evtp->evt) { 419 case LPFC_EVT_ELS_RETRY: 420 ndlp = (struct lpfc_nodelist *) (evtp->evt_arg1); 421 lpfc_els_retry_delay_handler(ndlp); 422 free_evt = 0; /* evt is part of ndlp */ 423 /* decrement the node reference count held 424 * for this queued work 425 */ 426 lpfc_nlp_put(ndlp); 427 break; 428 case LPFC_EVT_DEV_LOSS: 429 ndlp = (struct lpfc_nodelist *)(evtp->evt_arg1); 430 lpfc_dev_loss_tmo_handler(ndlp); 431 free_evt = 0; 432 /* decrement the node reference count held for 433 * this queued work 434 */ 435 lpfc_nlp_put(ndlp); 436 break; 437 case LPFC_EVT_ONLINE: 438 if (phba->link_state < LPFC_LINK_DOWN) 439 *(int *) (evtp->evt_arg1) = lpfc_online(phba); 440 else 441 *(int *) (evtp->evt_arg1) = 0; 442 complete((struct completion *)(evtp->evt_arg2)); 443 break; 444 case LPFC_EVT_OFFLINE_PREP: 445 if (phba->link_state >= LPFC_LINK_DOWN) 446 lpfc_offline_prep(phba); 447 *(int *)(evtp->evt_arg1) = 0; 448 complete((struct completion *)(evtp->evt_arg2)); 449 break; 450 case LPFC_EVT_OFFLINE: 451 lpfc_offline(phba); 452 lpfc_sli_brdrestart(phba); 453 *(int *)(evtp->evt_arg1) = 454 lpfc_sli_brdready(phba, HS_FFRDY | HS_MBRDY); 455 lpfc_unblock_mgmt_io(phba); 456 complete((struct completion *)(evtp->evt_arg2)); 457 break; 458 case LPFC_EVT_WARM_START: 459 lpfc_offline(phba); 460 lpfc_reset_barrier(phba); 461 lpfc_sli_brdreset(phba); 462 lpfc_hba_down_post(phba); 463 *(int *)(evtp->evt_arg1) = 464 lpfc_sli_brdready(phba, HS_MBRDY); 465 lpfc_unblock_mgmt_io(phba); 466 complete((struct completion *)(evtp->evt_arg2)); 467 break; 468 case LPFC_EVT_KILL: 469 lpfc_offline(phba); 470 *(int *)(evtp->evt_arg1) 471 = (phba->pport->stopped) 472 ? 0 : lpfc_sli_brdkill(phba); 473 lpfc_unblock_mgmt_io(phba); 474 complete((struct completion *)(evtp->evt_arg2)); 475 break; 476 case LPFC_EVT_FASTPATH_MGMT_EVT: 477 lpfc_send_fastpath_evt(phba, evtp); 478 free_evt = 0; 479 break; 480 case LPFC_EVT_RESET_HBA: 481 if (!(phba->pport->load_flag & FC_UNLOADING)) 482 lpfc_reset_hba(phba); 483 break; 484 } 485 if (free_evt) 486 kfree(evtp); 487 spin_lock_irq(&phba->hbalock); 488 } 489 spin_unlock_irq(&phba->hbalock); 490 491} 492 493static void 494lpfc_work_done(struct lpfc_hba *phba) 495{ 496 struct lpfc_sli_ring *pring; 497 uint32_t ha_copy, status, control, work_port_events; 498 struct lpfc_vport **vports; 499 struct lpfc_vport *vport; 500 int i; 501 502 spin_lock_irq(&phba->hbalock); 503 ha_copy = phba->work_ha; 504 phba->work_ha = 0; 505 spin_unlock_irq(&phba->hbalock); 506 507 /* First, try to post the next mailbox command to SLI4 device */ 508 if (phba->pci_dev_grp == LPFC_PCI_DEV_OC) 509 lpfc_sli4_post_async_mbox(phba); 510 511 if (ha_copy & HA_ERATT) 512 /* Handle the error attention event */ 513 lpfc_handle_eratt(phba); 514 515 if (ha_copy & HA_MBATT) 516 lpfc_sli_handle_mb_event(phba); 517 518 if (ha_copy & HA_LATT) 519 lpfc_handle_latt(phba); 520 521 /* Process SLI4 events */ 522 if (phba->pci_dev_grp == LPFC_PCI_DEV_OC) { 523 if (phba->hba_flag & FCP_XRI_ABORT_EVENT) 524 lpfc_sli4_fcp_xri_abort_event_proc(phba); 525 if (phba->hba_flag & ELS_XRI_ABORT_EVENT) 526 lpfc_sli4_els_xri_abort_event_proc(phba); 527 if (phba->hba_flag & ASYNC_EVENT) 528 lpfc_sli4_async_event_proc(phba); 529 if (phba->hba_flag & HBA_POST_RECEIVE_BUFFER) { 530 spin_lock_irq(&phba->hbalock); 531 phba->hba_flag &= ~HBA_POST_RECEIVE_BUFFER; 532 spin_unlock_irq(&phba->hbalock); 533 lpfc_sli_hbqbuf_add_hbqs(phba, LPFC_ELS_HBQ); 534 } 535 if (phba->fcf.fcf_flag & FCF_REDISC_EVT) 536 lpfc_sli4_fcf_redisc_event_proc(phba); 537 } 538 539 vports = lpfc_create_vport_work_array(phba); 540 if (vports != NULL) 541 for (i = 0; i <= phba->max_vports; i++) { 542 /* 543 * We could have no vports in array if unloading, so if 544 * this happens then just use the pport 545 */ 546 if (vports[i] == NULL && i == 0) 547 vport = phba->pport; 548 else 549 vport = vports[i]; 550 if (vport == NULL) 551 break; 552 spin_lock_irq(&vport->work_port_lock); 553 work_port_events = vport->work_port_events; 554 vport->work_port_events &= ~work_port_events; 555 spin_unlock_irq(&vport->work_port_lock); 556 if (work_port_events & WORKER_DISC_TMO) 557 lpfc_disc_timeout_handler(vport); 558 if (work_port_events & WORKER_ELS_TMO) 559 lpfc_els_timeout_handler(vport); 560 if (work_port_events & WORKER_HB_TMO) 561 lpfc_hb_timeout_handler(phba); 562 if (work_port_events & WORKER_MBOX_TMO) 563 lpfc_mbox_timeout_handler(phba); 564 if (work_port_events & WORKER_FABRIC_BLOCK_TMO) 565 lpfc_unblock_fabric_iocbs(phba); 566 if (work_port_events & WORKER_FDMI_TMO) 567 lpfc_fdmi_timeout_handler(vport); 568 if (work_port_events & WORKER_RAMP_DOWN_QUEUE) 569 lpfc_ramp_down_queue_handler(phba); 570 if (work_port_events & WORKER_RAMP_UP_QUEUE) 571 lpfc_ramp_up_queue_handler(phba); 572 } 573 lpfc_destroy_vport_work_array(phba, vports); 574 575 pring = &phba->sli.ring[LPFC_ELS_RING]; 576 status = (ha_copy & (HA_RXMASK << (4*LPFC_ELS_RING))); 577 status >>= (4*LPFC_ELS_RING); 578 if ((status & HA_RXMASK) || 579 (pring->flag & LPFC_DEFERRED_RING_EVENT) || 580 (phba->hba_flag & HBA_SP_QUEUE_EVT)) { 581 if (pring->flag & LPFC_STOP_IOCB_EVENT) { 582 pring->flag |= LPFC_DEFERRED_RING_EVENT; 583 /* Set the lpfc data pending flag */ 584 set_bit(LPFC_DATA_READY, &phba->data_flags); 585 } else { 586 pring->flag &= ~LPFC_DEFERRED_RING_EVENT; 587 lpfc_sli_handle_slow_ring_event(phba, pring, 588 (status & 589 HA_RXMASK)); 590 } 591 if ((phba->sli_rev == LPFC_SLI_REV4) && pring->txq_cnt) 592 lpfc_drain_txq(phba); 593 /* 594 * Turn on Ring interrupts 595 */ 596 if (phba->sli_rev <= LPFC_SLI_REV3) { 597 spin_lock_irq(&phba->hbalock); 598 control = readl(phba->HCregaddr); 599 if (!(control & (HC_R0INT_ENA << LPFC_ELS_RING))) { 600 lpfc_debugfs_slow_ring_trc(phba, 601 "WRK Enable ring: cntl:x%x hacopy:x%x", 602 control, ha_copy, 0); 603 604 control |= (HC_R0INT_ENA << LPFC_ELS_RING); 605 writel(control, phba->HCregaddr); 606 readl(phba->HCregaddr); /* flush */ 607 } else { 608 lpfc_debugfs_slow_ring_trc(phba, 609 "WRK Ring ok: cntl:x%x hacopy:x%x", 610 control, ha_copy, 0); 611 } 612 spin_unlock_irq(&phba->hbalock); 613 } 614 } 615 lpfc_work_list_done(phba); 616} 617 618int 619lpfc_do_work(void *p) 620{ 621 struct lpfc_hba *phba = p; 622 int rc; 623 624 set_user_nice(current, -20); 625 phba->data_flags = 0; 626 627 while (!kthread_should_stop()) { 628 /* wait and check worker queue activities */ 629 rc = wait_event_interruptible(phba->work_waitq, 630 (test_and_clear_bit(LPFC_DATA_READY, 631 &phba->data_flags) 632 || kthread_should_stop())); 633 /* Signal wakeup shall terminate the worker thread */ 634 if (rc) { 635 lpfc_printf_log(phba, KERN_ERR, LOG_ELS, 636 "0433 Wakeup on signal: rc=x%x\n", rc); 637 break; 638 } 639 640 /* Attend pending lpfc data processing */ 641 lpfc_work_done(phba); 642 } 643 phba->worker_thread = NULL; 644 lpfc_printf_log(phba, KERN_INFO, LOG_ELS, 645 "0432 Worker thread stopped.\n"); 646 return 0; 647} 648 649/* 650 * This is only called to handle FC worker events. Since this a rare 651 * occurance, we allocate a struct lpfc_work_evt structure here instead of 652 * embedding it in the IOCB. 653 */ 654int 655lpfc_workq_post_event(struct lpfc_hba *phba, void *arg1, void *arg2, 656 uint32_t evt) 657{ 658 struct lpfc_work_evt *evtp; 659 unsigned long flags; 660 661 /* 662 * All Mailbox completions and LPFC_ELS_RING rcv ring IOCB events will 663 * be queued to worker thread for processing 664 */ 665 evtp = kmalloc(sizeof(struct lpfc_work_evt), GFP_ATOMIC); 666 if (!evtp) 667 return 0; 668 669 evtp->evt_arg1 = arg1; 670 evtp->evt_arg2 = arg2; 671 evtp->evt = evt; 672 673 spin_lock_irqsave(&phba->hbalock, flags); 674 list_add_tail(&evtp->evt_listp, &phba->work_list); 675 spin_unlock_irqrestore(&phba->hbalock, flags); 676 677 lpfc_worker_wake_up(phba); 678 679 return 1; 680} 681 682void 683lpfc_cleanup_rpis(struct lpfc_vport *vport, int remove) 684{ 685 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 686 struct lpfc_hba *phba = vport->phba; 687 struct lpfc_nodelist *ndlp, *next_ndlp; 688 int rc; 689 690 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) { 691 if (!NLP_CHK_NODE_ACT(ndlp)) 692 continue; 693 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE) 694 continue; 695 if ((phba->sli3_options & LPFC_SLI3_VPORT_TEARDOWN) || 696 ((vport->port_type == LPFC_NPIV_PORT) && 697 (ndlp->nlp_DID == NameServer_DID))) 698 lpfc_unreg_rpi(vport, ndlp); 699 700 /* Leave Fabric nodes alone on link down */ 701 if ((phba->sli_rev < LPFC_SLI_REV4) && 702 (!remove && ndlp->nlp_type & NLP_FABRIC)) 703 continue; 704 rc = lpfc_disc_state_machine(vport, ndlp, NULL, 705 remove 706 ? NLP_EVT_DEVICE_RM 707 : NLP_EVT_DEVICE_RECOVERY); 708 } 709 if (phba->sli3_options & LPFC_SLI3_VPORT_TEARDOWN) { 710 lpfc_mbx_unreg_vpi(vport); 711 spin_lock_irq(shost->host_lock); 712 vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI; 713 spin_unlock_irq(shost->host_lock); 714 } 715} 716 717void 718lpfc_port_link_failure(struct lpfc_vport *vport) 719{ 720 lpfc_vport_set_state(vport, FC_VPORT_LINKDOWN); 721 722 /* Cleanup any outstanding received buffers */ 723 lpfc_cleanup_rcv_buffers(vport); 724 725 /* Cleanup any outstanding RSCN activity */ 726 lpfc_els_flush_rscn(vport); 727 728 /* Cleanup any outstanding ELS commands */ 729 lpfc_els_flush_cmd(vport); 730 731 lpfc_cleanup_rpis(vport, 0); 732 733 /* Turn off discovery timer if its running */ 734 lpfc_can_disctmo(vport); 735} 736 737void 738lpfc_linkdown_port(struct lpfc_vport *vport) 739{ 740 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 741 742 fc_host_post_event(shost, fc_get_event_number(), FCH_EVT_LINKDOWN, 0); 743 744 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, 745 "Link Down: state:x%x rtry:x%x flg:x%x", 746 vport->port_state, vport->fc_ns_retry, vport->fc_flag); 747 748 lpfc_port_link_failure(vport); 749 750} 751 752int 753lpfc_linkdown(struct lpfc_hba *phba) 754{ 755 struct lpfc_vport *vport = phba->pport; 756 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 757 struct lpfc_vport **vports; 758 LPFC_MBOXQ_t *mb; 759 int i; 760 761 if (phba->link_state == LPFC_LINK_DOWN) 762 return 0; 763 764 /* Block all SCSI stack I/Os */ 765 lpfc_scsi_dev_block(phba); 766 767 spin_lock_irq(&phba->hbalock); 768 phba->fcf.fcf_flag &= ~(FCF_AVAILABLE | FCF_SCAN_DONE); 769 spin_unlock_irq(&phba->hbalock); 770 if (phba->link_state > LPFC_LINK_DOWN) { 771 phba->link_state = LPFC_LINK_DOWN; 772 spin_lock_irq(shost->host_lock); 773 phba->pport->fc_flag &= ~FC_LBIT; 774 spin_unlock_irq(shost->host_lock); 775 } 776 vports = lpfc_create_vport_work_array(phba); 777 if (vports != NULL) 778 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) { 779 /* Issue a LINK DOWN event to all nodes */ 780 lpfc_linkdown_port(vports[i]); 781 } 782 lpfc_destroy_vport_work_array(phba, vports); 783 /* Clean up any firmware default rpi's */ 784 mb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 785 if (mb) { 786 lpfc_unreg_did(phba, 0xffff, 0xffffffff, mb); 787 mb->vport = vport; 788 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl; 789 if (lpfc_sli_issue_mbox(phba, mb, MBX_NOWAIT) 790 == MBX_NOT_FINISHED) { 791 mempool_free(mb, phba->mbox_mem_pool); 792 } 793 } 794 795 /* Setup myDID for link up if we are in pt2pt mode */ 796 if (phba->pport->fc_flag & FC_PT2PT) { 797 phba->pport->fc_myDID = 0; 798 mb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 799 if (mb) { 800 lpfc_config_link(phba, mb); 801 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl; 802 mb->vport = vport; 803 if (lpfc_sli_issue_mbox(phba, mb, MBX_NOWAIT) 804 == MBX_NOT_FINISHED) { 805 mempool_free(mb, phba->mbox_mem_pool); 806 } 807 } 808 spin_lock_irq(shost->host_lock); 809 phba->pport->fc_flag &= ~(FC_PT2PT | FC_PT2PT_PLOGI); 810 spin_unlock_irq(shost->host_lock); 811 } 812 813 return 0; 814} 815 816static void 817lpfc_linkup_cleanup_nodes(struct lpfc_vport *vport) 818{ 819 struct lpfc_nodelist *ndlp; 820 821 list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) { 822 if (!NLP_CHK_NODE_ACT(ndlp)) 823 continue; 824 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE) 825 continue; 826 if (ndlp->nlp_type & NLP_FABRIC) { 827 /* On Linkup its safe to clean up the ndlp 828 * from Fabric connections. 829 */ 830 if (ndlp->nlp_DID != Fabric_DID) 831 lpfc_unreg_rpi(vport, ndlp); 832 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE); 833 } else if (!(ndlp->nlp_flag & NLP_NPR_ADISC)) { 834 /* Fail outstanding IO now since device is 835 * marked for PLOGI. 836 */ 837 lpfc_unreg_rpi(vport, ndlp); 838 } 839 } 840} 841 842static void 843lpfc_linkup_port(struct lpfc_vport *vport) 844{ 845 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 846 struct lpfc_hba *phba = vport->phba; 847 848 if ((vport->load_flag & FC_UNLOADING) != 0) 849 return; 850 851 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, 852 "Link Up: top:x%x speed:x%x flg:x%x", 853 phba->fc_topology, phba->fc_linkspeed, phba->link_flag); 854 855 /* If NPIV is not enabled, only bring the physical port up */ 856 if (!(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) && 857 (vport != phba->pport)) 858 return; 859 860 fc_host_post_event(shost, fc_get_event_number(), FCH_EVT_LINKUP, 0); 861 862 spin_lock_irq(shost->host_lock); 863 vport->fc_flag &= ~(FC_PT2PT | FC_PT2PT_PLOGI | FC_ABORT_DISCOVERY | 864 FC_RSCN_MODE | FC_NLP_MORE | FC_RSCN_DISCOVERY); 865 vport->fc_flag |= FC_NDISC_ACTIVE; 866 vport->fc_ns_retry = 0; 867 spin_unlock_irq(shost->host_lock); 868 869 if (vport->fc_flag & FC_LBIT) 870 lpfc_linkup_cleanup_nodes(vport); 871 872} 873 874static int 875lpfc_linkup(struct lpfc_hba *phba) 876{ 877 struct lpfc_vport **vports; 878 int i; 879 880 phba->link_state = LPFC_LINK_UP; 881 882 /* Unblock fabric iocbs if they are blocked */ 883 clear_bit(FABRIC_COMANDS_BLOCKED, &phba->bit_flags); 884 del_timer_sync(&phba->fabric_block_timer); 885 886 vports = lpfc_create_vport_work_array(phba); 887 if (vports != NULL) 888 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) 889 lpfc_linkup_port(vports[i]); 890 lpfc_destroy_vport_work_array(phba, vports); 891 if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) && 892 (phba->sli_rev < LPFC_SLI_REV4)) 893 lpfc_issue_clear_la(phba, phba->pport); 894 895 return 0; 896} 897 898/* 899 * This routine handles processing a CLEAR_LA mailbox 900 * command upon completion. It is setup in the LPFC_MBOXQ 901 * as the completion routine when the command is 902 * handed off to the SLI layer. 903 */ 904static void 905lpfc_mbx_cmpl_clear_la(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 906{ 907 struct lpfc_vport *vport = pmb->vport; 908 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 909 struct lpfc_sli *psli = &phba->sli; 910 MAILBOX_t *mb = &pmb->u.mb; 911 uint32_t control; 912 913 /* Since we don't do discovery right now, turn these off here */ 914 psli->ring[psli->extra_ring].flag &= ~LPFC_STOP_IOCB_EVENT; 915 psli->ring[psli->fcp_ring].flag &= ~LPFC_STOP_IOCB_EVENT; 916 psli->ring[psli->next_ring].flag &= ~LPFC_STOP_IOCB_EVENT; 917 918 /* Check for error */ 919 if ((mb->mbxStatus) && (mb->mbxStatus != 0x1601)) { 920 /* CLEAR_LA mbox error <mbxStatus> state <hba_state> */ 921 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX, 922 "0320 CLEAR_LA mbxStatus error x%x hba " 923 "state x%x\n", 924 mb->mbxStatus, vport->port_state); 925 phba->link_state = LPFC_HBA_ERROR; 926 goto out; 927 } 928 929 if (vport->port_type == LPFC_PHYSICAL_PORT) 930 phba->link_state = LPFC_HBA_READY; 931 932 spin_lock_irq(&phba->hbalock); 933 psli->sli_flag |= LPFC_PROCESS_LA; 934 control = readl(phba->HCregaddr); 935 control |= HC_LAINT_ENA; 936 writel(control, phba->HCregaddr); 937 readl(phba->HCregaddr); /* flush */ 938 spin_unlock_irq(&phba->hbalock); 939 mempool_free(pmb, phba->mbox_mem_pool); 940 return; 941 942out: 943 /* Device Discovery completes */ 944 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, 945 "0225 Device Discovery completes\n"); 946 mempool_free(pmb, phba->mbox_mem_pool); 947 948 spin_lock_irq(shost->host_lock); 949 vport->fc_flag &= ~FC_ABORT_DISCOVERY; 950 spin_unlock_irq(shost->host_lock); 951 952 lpfc_can_disctmo(vport); 953 954 /* turn on Link Attention interrupts */ 955 956 spin_lock_irq(&phba->hbalock); 957 psli->sli_flag |= LPFC_PROCESS_LA; 958 control = readl(phba->HCregaddr); 959 control |= HC_LAINT_ENA; 960 writel(control, phba->HCregaddr); 961 readl(phba->HCregaddr); /* flush */ 962 spin_unlock_irq(&phba->hbalock); 963 964 return; 965} 966 967 968static void 969lpfc_mbx_cmpl_local_config_link(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 970{ 971 struct lpfc_vport *vport = pmb->vport; 972 973 if (pmb->u.mb.mbxStatus) 974 goto out; 975 976 mempool_free(pmb, phba->mbox_mem_pool); 977 978 if (phba->fc_topology == TOPOLOGY_LOOP && 979 vport->fc_flag & FC_PUBLIC_LOOP && 980 !(vport->fc_flag & FC_LBIT)) { 981 /* Need to wait for FAN - use discovery timer 982 * for timeout. port_state is identically 983 * LPFC_LOCAL_CFG_LINK while waiting for FAN 984 */ 985 lpfc_set_disctmo(vport); 986 return; 987 } 988 989 /* Start discovery by sending a FLOGI. port_state is identically 990 * LPFC_FLOGI while waiting for FLOGI cmpl 991 */ 992 if (vport->port_state != LPFC_FLOGI) { 993 lpfc_initial_flogi(vport); 994 } 995 return; 996 997out: 998 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX, 999 "0306 CONFIG_LINK mbxStatus error x%x " 1000 "HBA state x%x\n", 1001 pmb->u.mb.mbxStatus, vport->port_state); 1002 mempool_free(pmb, phba->mbox_mem_pool); 1003 1004 lpfc_linkdown(phba); 1005 1006 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY, 1007 "0200 CONFIG_LINK bad hba state x%x\n", 1008 vport->port_state); 1009 1010 lpfc_issue_clear_la(phba, vport); 1011 return; 1012} 1013 1014static void 1015lpfc_mbx_cmpl_reg_fcfi(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq) 1016{ 1017 struct lpfc_vport *vport = mboxq->vport; 1018 unsigned long flags; 1019 1020 if (mboxq->u.mb.mbxStatus) { 1021 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX, 1022 "2017 REG_FCFI mbxStatus error x%x " 1023 "HBA state x%x\n", 1024 mboxq->u.mb.mbxStatus, vport->port_state); 1025 mempool_free(mboxq, phba->mbox_mem_pool); 1026 return; 1027 } 1028 1029 /* Start FCoE discovery by sending a FLOGI. */ 1030 phba->fcf.fcfi = bf_get(lpfc_reg_fcfi_fcfi, &mboxq->u.mqe.un.reg_fcfi); 1031 /* Set the FCFI registered flag */ 1032 spin_lock_irqsave(&phba->hbalock, flags); 1033 phba->fcf.fcf_flag |= FCF_REGISTERED; 1034 spin_unlock_irqrestore(&phba->hbalock, flags); 1035 /* If there is a pending FCoE event, restart FCF table scan. */ 1036 if (lpfc_check_pending_fcoe_event(phba, 1)) { 1037 mempool_free(mboxq, phba->mbox_mem_pool); 1038 return; 1039 } 1040 spin_lock_irqsave(&phba->hbalock, flags); 1041 phba->fcf.fcf_flag |= (FCF_SCAN_DONE | FCF_IN_USE); 1042 phba->hba_flag &= ~FCF_DISC_INPROGRESS; 1043 spin_unlock_irqrestore(&phba->hbalock, flags); 1044 if (vport->port_state != LPFC_FLOGI) 1045 lpfc_initial_flogi(vport); 1046 1047 mempool_free(mboxq, phba->mbox_mem_pool); 1048 return; 1049} 1050 1051/** 1052 * lpfc_fab_name_match - Check if the fcf fabric name match. 1053 * @fab_name: pointer to fabric name. 1054 * @new_fcf_record: pointer to fcf record. 1055 * 1056 * This routine compare the fcf record's fabric name with provided 1057 * fabric name. If the fabric name are identical this function 1058 * returns 1 else return 0. 1059 **/ 1060static uint32_t 1061lpfc_fab_name_match(uint8_t *fab_name, struct fcf_record *new_fcf_record) 1062{ 1063 if (fab_name[0] != bf_get(lpfc_fcf_record_fab_name_0, new_fcf_record)) 1064 return 0; 1065 if (fab_name[1] != bf_get(lpfc_fcf_record_fab_name_1, new_fcf_record)) 1066 return 0; 1067 if (fab_name[2] != bf_get(lpfc_fcf_record_fab_name_2, new_fcf_record)) 1068 return 0; 1069 if (fab_name[3] != bf_get(lpfc_fcf_record_fab_name_3, new_fcf_record)) 1070 return 0; 1071 if (fab_name[4] != bf_get(lpfc_fcf_record_fab_name_4, new_fcf_record)) 1072 return 0; 1073 if (fab_name[5] != bf_get(lpfc_fcf_record_fab_name_5, new_fcf_record)) 1074 return 0; 1075 if (fab_name[6] != bf_get(lpfc_fcf_record_fab_name_6, new_fcf_record)) 1076 return 0; 1077 if (fab_name[7] != bf_get(lpfc_fcf_record_fab_name_7, new_fcf_record)) 1078 return 0; 1079 return 1; 1080} 1081 1082/** 1083 * lpfc_sw_name_match - Check if the fcf switch name match. 1084 * @fab_name: pointer to fabric name. 1085 * @new_fcf_record: pointer to fcf record. 1086 * 1087 * This routine compare the fcf record's switch name with provided 1088 * switch name. If the switch name are identical this function 1089 * returns 1 else return 0. 1090 **/ 1091static uint32_t 1092lpfc_sw_name_match(uint8_t *sw_name, struct fcf_record *new_fcf_record) 1093{ 1094 if (sw_name[0] != bf_get(lpfc_fcf_record_switch_name_0, new_fcf_record)) 1095 return 0; 1096 if (sw_name[1] != bf_get(lpfc_fcf_record_switch_name_1, new_fcf_record)) 1097 return 0; 1098 if (sw_name[2] != bf_get(lpfc_fcf_record_switch_name_2, new_fcf_record)) 1099 return 0; 1100 if (sw_name[3] != bf_get(lpfc_fcf_record_switch_name_3, new_fcf_record)) 1101 return 0; 1102 if (sw_name[4] != bf_get(lpfc_fcf_record_switch_name_4, new_fcf_record)) 1103 return 0; 1104 if (sw_name[5] != bf_get(lpfc_fcf_record_switch_name_5, new_fcf_record)) 1105 return 0; 1106 if (sw_name[6] != bf_get(lpfc_fcf_record_switch_name_6, new_fcf_record)) 1107 return 0; 1108 if (sw_name[7] != bf_get(lpfc_fcf_record_switch_name_7, new_fcf_record)) 1109 return 0; 1110 return 1; 1111} 1112 1113/** 1114 * lpfc_mac_addr_match - Check if the fcf mac address match. 1115 * @mac_addr: pointer to mac address. 1116 * @new_fcf_record: pointer to fcf record. 1117 * 1118 * This routine compare the fcf record's mac address with HBA's 1119 * FCF mac address. If the mac addresses are identical this function 1120 * returns 1 else return 0. 1121 **/ 1122static uint32_t 1123lpfc_mac_addr_match(uint8_t *mac_addr, struct fcf_record *new_fcf_record) 1124{ 1125 if (mac_addr[0] != bf_get(lpfc_fcf_record_mac_0, new_fcf_record)) 1126 return 0; 1127 if (mac_addr[1] != bf_get(lpfc_fcf_record_mac_1, new_fcf_record)) 1128 return 0; 1129 if (mac_addr[2] != bf_get(lpfc_fcf_record_mac_2, new_fcf_record)) 1130 return 0; 1131 if (mac_addr[3] != bf_get(lpfc_fcf_record_mac_3, new_fcf_record)) 1132 return 0; 1133 if (mac_addr[4] != bf_get(lpfc_fcf_record_mac_4, new_fcf_record)) 1134 return 0; 1135 if (mac_addr[5] != bf_get(lpfc_fcf_record_mac_5, new_fcf_record)) 1136 return 0; 1137 return 1; 1138} 1139 1140static bool 1141lpfc_vlan_id_match(uint16_t curr_vlan_id, uint16_t new_vlan_id) 1142{ 1143 return (curr_vlan_id == new_vlan_id); 1144} 1145 1146/** 1147 * lpfc_copy_fcf_record - Copy fcf information to lpfc_hba. 1148 * @fcf: pointer to driver fcf record. 1149 * @new_fcf_record: pointer to fcf record. 1150 * 1151 * This routine copies the FCF information from the FCF 1152 * record to lpfc_hba data structure. 1153 **/ 1154static void 1155lpfc_copy_fcf_record(struct lpfc_fcf_rec *fcf_rec, 1156 struct fcf_record *new_fcf_record) 1157{ 1158 /* Fabric name */ 1159 fcf_rec->fabric_name[0] = 1160 bf_get(lpfc_fcf_record_fab_name_0, new_fcf_record); 1161 fcf_rec->fabric_name[1] = 1162 bf_get(lpfc_fcf_record_fab_name_1, new_fcf_record); 1163 fcf_rec->fabric_name[2] = 1164 bf_get(lpfc_fcf_record_fab_name_2, new_fcf_record); 1165 fcf_rec->fabric_name[3] = 1166 bf_get(lpfc_fcf_record_fab_name_3, new_fcf_record); 1167 fcf_rec->fabric_name[4] = 1168 bf_get(lpfc_fcf_record_fab_name_4, new_fcf_record); 1169 fcf_rec->fabric_name[5] = 1170 bf_get(lpfc_fcf_record_fab_name_5, new_fcf_record); 1171 fcf_rec->fabric_name[6] = 1172 bf_get(lpfc_fcf_record_fab_name_6, new_fcf_record); 1173 fcf_rec->fabric_name[7] = 1174 bf_get(lpfc_fcf_record_fab_name_7, new_fcf_record); 1175 /* Mac address */ 1176 fcf_rec->mac_addr[0] = bf_get(lpfc_fcf_record_mac_0, new_fcf_record); 1177 fcf_rec->mac_addr[1] = bf_get(lpfc_fcf_record_mac_1, new_fcf_record); 1178 fcf_rec->mac_addr[2] = bf_get(lpfc_fcf_record_mac_2, new_fcf_record); 1179 fcf_rec->mac_addr[3] = bf_get(lpfc_fcf_record_mac_3, new_fcf_record); 1180 fcf_rec->mac_addr[4] = bf_get(lpfc_fcf_record_mac_4, new_fcf_record); 1181 fcf_rec->mac_addr[5] = bf_get(lpfc_fcf_record_mac_5, new_fcf_record); 1182 /* FCF record index */ 1183 fcf_rec->fcf_indx = bf_get(lpfc_fcf_record_fcf_index, new_fcf_record); 1184 /* FCF record priority */ 1185 fcf_rec->priority = new_fcf_record->fip_priority; 1186 /* Switch name */ 1187 fcf_rec->switch_name[0] = 1188 bf_get(lpfc_fcf_record_switch_name_0, new_fcf_record); 1189 fcf_rec->switch_name[1] = 1190 bf_get(lpfc_fcf_record_switch_name_1, new_fcf_record); 1191 fcf_rec->switch_name[2] = 1192 bf_get(lpfc_fcf_record_switch_name_2, new_fcf_record); 1193 fcf_rec->switch_name[3] = 1194 bf_get(lpfc_fcf_record_switch_name_3, new_fcf_record); 1195 fcf_rec->switch_name[4] = 1196 bf_get(lpfc_fcf_record_switch_name_4, new_fcf_record); 1197 fcf_rec->switch_name[5] = 1198 bf_get(lpfc_fcf_record_switch_name_5, new_fcf_record); 1199 fcf_rec->switch_name[6] = 1200 bf_get(lpfc_fcf_record_switch_name_6, new_fcf_record); 1201 fcf_rec->switch_name[7] = 1202 bf_get(lpfc_fcf_record_switch_name_7, new_fcf_record); 1203} 1204 1205/** 1206 * lpfc_update_fcf_record - Update driver fcf record 1207 * @phba: pointer to lpfc hba data structure. 1208 * @fcf_rec: pointer to driver fcf record. 1209 * @new_fcf_record: pointer to hba fcf record. 1210 * @addr_mode: address mode to be set to the driver fcf record. 1211 * @vlan_id: vlan tag to be set to the driver fcf record. 1212 * @flag: flag bits to be set to the driver fcf record. 1213 * 1214 * This routine updates the driver FCF record from the new HBA FCF record 1215 * together with the address mode, vlan_id, and other informations. This 1216 * routine is called with the host lock held. 1217 **/ 1218static void 1219__lpfc_update_fcf_record(struct lpfc_hba *phba, struct lpfc_fcf_rec *fcf_rec, 1220 struct fcf_record *new_fcf_record, uint32_t addr_mode, 1221 uint16_t vlan_id, uint32_t flag) 1222{ 1223 /* Copy the fields from the HBA's FCF record */ 1224 lpfc_copy_fcf_record(fcf_rec, new_fcf_record); 1225 /* Update other fields of driver FCF record */ 1226 fcf_rec->addr_mode = addr_mode; 1227 fcf_rec->vlan_id = vlan_id; 1228 fcf_rec->flag |= (flag | RECORD_VALID); 1229} 1230 1231/** 1232 * lpfc_register_fcf - Register the FCF with hba. 1233 * @phba: pointer to lpfc hba data structure. 1234 * 1235 * This routine issues a register fcfi mailbox command to register 1236 * the fcf with HBA. 1237 **/ 1238static void 1239lpfc_register_fcf(struct lpfc_hba *phba) 1240{ 1241 LPFC_MBOXQ_t *fcf_mbxq; 1242 int rc; 1243 unsigned long flags; 1244 1245 spin_lock_irqsave(&phba->hbalock, flags); 1246 1247 /* If the FCF is not availabe do nothing. */ 1248 if (!(phba->fcf.fcf_flag & FCF_AVAILABLE)) { 1249 phba->hba_flag &= ~FCF_DISC_INPROGRESS; 1250 spin_unlock_irqrestore(&phba->hbalock, flags); 1251 return; 1252 } 1253 1254 /* The FCF is already registered, start discovery */ 1255 if (phba->fcf.fcf_flag & FCF_REGISTERED) { 1256 phba->fcf.fcf_flag |= (FCF_SCAN_DONE | FCF_IN_USE); 1257 phba->hba_flag &= ~FCF_DISC_INPROGRESS; 1258 spin_unlock_irqrestore(&phba->hbalock, flags); 1259 if (phba->pport->port_state != LPFC_FLOGI) 1260 lpfc_initial_flogi(phba->pport); 1261 return; 1262 } 1263 spin_unlock_irqrestore(&phba->hbalock, flags); 1264 1265 fcf_mbxq = mempool_alloc(phba->mbox_mem_pool, 1266 GFP_KERNEL); 1267 if (!fcf_mbxq) { 1268 spin_lock_irqsave(&phba->hbalock, flags); 1269 phba->hba_flag &= ~FCF_DISC_INPROGRESS; 1270 spin_unlock_irqrestore(&phba->hbalock, flags); 1271 return; 1272 } 1273 1274 lpfc_reg_fcfi(phba, fcf_mbxq); 1275 fcf_mbxq->vport = phba->pport; 1276 fcf_mbxq->mbox_cmpl = lpfc_mbx_cmpl_reg_fcfi; 1277 rc = lpfc_sli_issue_mbox(phba, fcf_mbxq, MBX_NOWAIT); 1278 if (rc == MBX_NOT_FINISHED) { 1279 spin_lock_irqsave(&phba->hbalock, flags); 1280 phba->hba_flag &= ~FCF_DISC_INPROGRESS; 1281 spin_unlock_irqrestore(&phba->hbalock, flags); 1282 mempool_free(fcf_mbxq, phba->mbox_mem_pool); 1283 } 1284 1285 return; 1286} 1287 1288/** 1289 * lpfc_match_fcf_conn_list - Check if the FCF record can be used for discovery. 1290 * @phba: pointer to lpfc hba data structure. 1291 * @new_fcf_record: pointer to fcf record. 1292 * @boot_flag: Indicates if this record used by boot bios. 1293 * @addr_mode: The address mode to be used by this FCF 1294 * @vlan_id: The vlan id to be used as vlan tagging by this FCF. 1295 * 1296 * This routine compare the fcf record with connect list obtained from the 1297 * config region to decide if this FCF can be used for SAN discovery. It returns 1298 * 1 if this record can be used for SAN discovery else return zero. If this FCF 1299 * record can be used for SAN discovery, the boot_flag will indicate if this FCF 1300 * is used by boot bios and addr_mode will indicate the addressing mode to be 1301 * used for this FCF when the function returns. 1302 * If the FCF record need to be used with a particular vlan id, the vlan is 1303 * set in the vlan_id on return of the function. If not VLAN tagging need to 1304 * be used with the FCF vlan_id will be set to LPFC_FCOE_NULL_VID; 1305 **/ 1306static int 1307lpfc_match_fcf_conn_list(struct lpfc_hba *phba, 1308 struct fcf_record *new_fcf_record, 1309 uint32_t *boot_flag, uint32_t *addr_mode, 1310 uint16_t *vlan_id) 1311{ 1312 struct lpfc_fcf_conn_entry *conn_entry; 1313 int i, j, fcf_vlan_id = 0; 1314 1315 /* Find the lowest VLAN id in the FCF record */ 1316 for (i = 0; i < 512; i++) { 1317 if (new_fcf_record->vlan_bitmap[i]) { 1318 fcf_vlan_id = i * 8; 1319 j = 0; 1320 while (!((new_fcf_record->vlan_bitmap[i] >> j) & 1)) { 1321 j++; 1322 fcf_vlan_id++; 1323 } 1324 break; 1325 } 1326 } 1327 1328 /* If FCF not available return 0 */ 1329 if (!bf_get(lpfc_fcf_record_fcf_avail, new_fcf_record) || 1330 !bf_get(lpfc_fcf_record_fcf_valid, new_fcf_record)) 1331 return 0; 1332 1333 if (!(phba->hba_flag & HBA_FIP_SUPPORT)) { 1334 *boot_flag = 0; 1335 *addr_mode = bf_get(lpfc_fcf_record_mac_addr_prov, 1336 new_fcf_record); 1337 if (phba->valid_vlan) 1338 *vlan_id = phba->vlan_id; 1339 else 1340 *vlan_id = LPFC_FCOE_NULL_VID; 1341 return 1; 1342 } 1343 1344 /* 1345 * If there are no FCF connection table entry, driver connect to all 1346 * FCFs. 1347 */ 1348 if (list_empty(&phba->fcf_conn_rec_list)) { 1349 *boot_flag = 0; 1350 *addr_mode = bf_get(lpfc_fcf_record_mac_addr_prov, 1351 new_fcf_record); 1352 1353 /* 1354 * When there are no FCF connect entries, use driver's default 1355 * addressing mode - FPMA. 1356 */ 1357 if (*addr_mode & LPFC_FCF_FPMA) 1358 *addr_mode = LPFC_FCF_FPMA; 1359 1360 /* If FCF record report a vlan id use that vlan id */ 1361 if (fcf_vlan_id) 1362 *vlan_id = fcf_vlan_id; 1363 else 1364 *vlan_id = LPFC_FCOE_NULL_VID; 1365 return 1; 1366 } 1367 1368 list_for_each_entry(conn_entry, 1369 &phba->fcf_conn_rec_list, list) { 1370 if (!(conn_entry->conn_rec.flags & FCFCNCT_VALID)) 1371 continue; 1372 1373 if ((conn_entry->conn_rec.flags & FCFCNCT_FBNM_VALID) && 1374 !lpfc_fab_name_match(conn_entry->conn_rec.fabric_name, 1375 new_fcf_record)) 1376 continue; 1377 if ((conn_entry->conn_rec.flags & FCFCNCT_SWNM_VALID) && 1378 !lpfc_sw_name_match(conn_entry->conn_rec.switch_name, 1379 new_fcf_record)) 1380 continue; 1381 if (conn_entry->conn_rec.flags & FCFCNCT_VLAN_VALID) { 1382 /* 1383 * If the vlan bit map does not have the bit set for the 1384 * vlan id to be used, then it is not a match. 1385 */ 1386 if (!(new_fcf_record->vlan_bitmap 1387 [conn_entry->conn_rec.vlan_tag / 8] & 1388 (1 << (conn_entry->conn_rec.vlan_tag % 8)))) 1389 continue; 1390 } 1391 1392 /* 1393 * If connection record does not support any addressing mode, 1394 * skip the FCF record. 1395 */ 1396 if (!(bf_get(lpfc_fcf_record_mac_addr_prov, new_fcf_record) 1397 & (LPFC_FCF_FPMA | LPFC_FCF_SPMA))) 1398 continue; 1399 1400 /* 1401 * Check if the connection record specifies a required 1402 * addressing mode. 1403 */ 1404 if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) && 1405 !(conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED)) { 1406 1407 /* 1408 * If SPMA required but FCF not support this continue. 1409 */ 1410 if ((conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) && 1411 !(bf_get(lpfc_fcf_record_mac_addr_prov, 1412 new_fcf_record) & LPFC_FCF_SPMA)) 1413 continue; 1414 1415 /* 1416 * If FPMA required but FCF not support this continue. 1417 */ 1418 if (!(conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) && 1419 !(bf_get(lpfc_fcf_record_mac_addr_prov, 1420 new_fcf_record) & LPFC_FCF_FPMA)) 1421 continue; 1422 } 1423 1424 /* 1425 * This fcf record matches filtering criteria. 1426 */ 1427 if (conn_entry->conn_rec.flags & FCFCNCT_BOOT) 1428 *boot_flag = 1; 1429 else 1430 *boot_flag = 0; 1431 1432 /* 1433 * If user did not specify any addressing mode, or if the 1434 * prefered addressing mode specified by user is not supported 1435 * by FCF, allow fabric to pick the addressing mode. 1436 */ 1437 *addr_mode = bf_get(lpfc_fcf_record_mac_addr_prov, 1438 new_fcf_record); 1439 /* 1440 * If the user specified a required address mode, assign that 1441 * address mode 1442 */ 1443 if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) && 1444 (!(conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED))) 1445 *addr_mode = (conn_entry->conn_rec.flags & 1446 FCFCNCT_AM_SPMA) ? 1447 LPFC_FCF_SPMA : LPFC_FCF_FPMA; 1448 /* 1449 * If the user specified a prefered address mode, use the 1450 * addr mode only if FCF support the addr_mode. 1451 */ 1452 else if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) && 1453 (conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED) && 1454 (conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) && 1455 (*addr_mode & LPFC_FCF_SPMA)) 1456 *addr_mode = LPFC_FCF_SPMA; 1457 else if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) && 1458 (conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED) && 1459 !(conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) && 1460 (*addr_mode & LPFC_FCF_FPMA)) 1461 *addr_mode = LPFC_FCF_FPMA; 1462 1463 /* If matching connect list has a vlan id, use it */ 1464 if (conn_entry->conn_rec.flags & FCFCNCT_VLAN_VALID) 1465 *vlan_id = conn_entry->conn_rec.vlan_tag; 1466 /* 1467 * If no vlan id is specified in connect list, use the vlan id 1468 * in the FCF record 1469 */ 1470 else if (fcf_vlan_id) 1471 *vlan_id = fcf_vlan_id; 1472 else 1473 *vlan_id = LPFC_FCOE_NULL_VID; 1474 1475 return 1; 1476 } 1477 1478 return 0; 1479} 1480 1481/** 1482 * lpfc_check_pending_fcoe_event - Check if there is pending fcoe event. 1483 * @phba: pointer to lpfc hba data structure. 1484 * @unreg_fcf: Unregister FCF if FCF table need to be re-scaned. 1485 * 1486 * This function check if there is any fcoe event pending while driver 1487 * scan FCF entries. If there is any pending event, it will restart the 1488 * FCF saning and return 1 else return 0. 1489 */ 1490int 1491lpfc_check_pending_fcoe_event(struct lpfc_hba *phba, uint8_t unreg_fcf) 1492{ 1493 /* 1494 * If the Link is up and no FCoE events while in the 1495 * FCF discovery, no need to restart FCF discovery. 1496 */ 1497 if ((phba->link_state >= LPFC_LINK_UP) && 1498 (phba->fcoe_eventtag == phba->fcoe_eventtag_at_fcf_scan)) 1499 return 0; 1500 1501 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 1502 "2768 Pending link or FCF event during current " 1503 "handling of the previous event: link_state:x%x, " 1504 "evt_tag_at_scan:x%x, evt_tag_current:x%x\n", 1505 phba->link_state, phba->fcoe_eventtag_at_fcf_scan, 1506 phba->fcoe_eventtag); 1507 1508 spin_lock_irq(&phba->hbalock); 1509 phba->fcf.fcf_flag &= ~FCF_AVAILABLE; 1510 spin_unlock_irq(&phba->hbalock); 1511 1512 if (phba->link_state >= LPFC_LINK_UP) { 1513 lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY, 1514 "2780 Restart FCF table scan due to " 1515 "pending FCF event:evt_tag_at_scan:x%x, " 1516 "evt_tag_current:x%x\n", 1517 phba->fcoe_eventtag_at_fcf_scan, 1518 phba->fcoe_eventtag); 1519 lpfc_sli4_fcf_scan_read_fcf_rec(phba, LPFC_FCOE_FCF_GET_FIRST); 1520 } else { 1521 /* 1522 * Do not continue FCF discovery and clear FCF_DISC_INPROGRESS 1523 * flag 1524 */ 1525 lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY, 1526 "2833 Stop FCF discovery process due to link " 1527 "state change (x%x)\n", phba->link_state); 1528 spin_lock_irq(&phba->hbalock); 1529 phba->hba_flag &= ~FCF_DISC_INPROGRESS; 1530 phba->fcf.fcf_flag &= ~(FCF_REDISC_FOV | FCF_DISCOVERY); 1531 spin_unlock_irq(&phba->hbalock); 1532 } 1533 1534 /* Unregister the currently registered FCF if required */ 1535 if (unreg_fcf) { 1536 spin_lock_irq(&phba->hbalock); 1537 phba->fcf.fcf_flag &= ~FCF_REGISTERED; 1538 spin_unlock_irq(&phba->hbalock); 1539 lpfc_sli4_unregister_fcf(phba); 1540 } 1541 return 1; 1542} 1543 1544/** 1545 * lpfc_sli4_new_fcf_random_select - Randomly select an eligible new fcf record 1546 * @phba: pointer to lpfc hba data structure. 1547 * @fcf_cnt: number of eligible fcf record seen so far. 1548 * 1549 * This function makes an running random selection decision on FCF record to 1550 * use through a sequence of @fcf_cnt eligible FCF records with equal 1551 * probability. To perform integer manunipulation of random numbers with 1552 * size unit32_t, the lower 16 bits of the 32-bit random number returned 1553 * from random32() are taken as the random random number generated. 1554 * 1555 * Returns true when outcome is for the newly read FCF record should be 1556 * chosen; otherwise, return false when outcome is for keeping the previously 1557 * chosen FCF record. 1558 **/ 1559static bool 1560lpfc_sli4_new_fcf_random_select(struct lpfc_hba *phba, uint32_t fcf_cnt) 1561{ 1562 uint32_t rand_num; 1563 1564 /* Get 16-bit uniform random number */ 1565 rand_num = (0xFFFF & random32()); 1566 1567 /* Decision with probability 1/fcf_cnt */ 1568 if ((fcf_cnt * rand_num) < 0xFFFF) 1569 return true; 1570 else 1571 return false; 1572} 1573 1574/** 1575 * lpfc_sli4_fcf_rec_mbox_parse - Parse read_fcf mbox command. 1576 * @phba: pointer to lpfc hba data structure. 1577 * @mboxq: pointer to mailbox object. 1578 * @next_fcf_index: pointer to holder of next fcf index. 1579 * 1580 * This routine parses the non-embedded fcf mailbox command by performing the 1581 * necessarily error checking, non-embedded read FCF record mailbox command 1582 * SGE parsing, and endianness swapping. 1583 * 1584 * Returns the pointer to the new FCF record in the non-embedded mailbox 1585 * command DMA memory if successfully, other NULL. 1586 */ 1587static struct fcf_record * 1588lpfc_sli4_fcf_rec_mbox_parse(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq, 1589 uint16_t *next_fcf_index) 1590{ 1591 void *virt_addr; 1592 dma_addr_t phys_addr; 1593 struct lpfc_mbx_sge sge; 1594 struct lpfc_mbx_read_fcf_tbl *read_fcf; 1595 uint32_t shdr_status, shdr_add_status; 1596 union lpfc_sli4_cfg_shdr *shdr; 1597 struct fcf_record *new_fcf_record; 1598 1599 /* Get the first SGE entry from the non-embedded DMA memory. This 1600 * routine only uses a single SGE. 1601 */ 1602 lpfc_sli4_mbx_sge_get(mboxq, 0, &sge); 1603 phys_addr = getPaddr(sge.pa_hi, sge.pa_lo); 1604 if (unlikely(!mboxq->sge_array)) { 1605 lpfc_printf_log(phba, KERN_ERR, LOG_MBOX, 1606 "2524 Failed to get the non-embedded SGE " 1607 "virtual address\n"); 1608 return NULL; 1609 } 1610 virt_addr = mboxq->sge_array->addr[0]; 1611 1612 shdr = (union lpfc_sli4_cfg_shdr *)virt_addr; 1613 shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response); 1614 shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response); 1615 if (shdr_status || shdr_add_status) { 1616 if (shdr_status == STATUS_FCF_TABLE_EMPTY) 1617 lpfc_printf_log(phba, KERN_ERR, LOG_FIP, 1618 "2726 READ_FCF_RECORD Indicates empty " 1619 "FCF table.\n"); 1620 else 1621 lpfc_printf_log(phba, KERN_ERR, LOG_FIP, 1622 "2521 READ_FCF_RECORD mailbox failed " 1623 "with status x%x add_status x%x, " 1624 "mbx\n", shdr_status, shdr_add_status); 1625 return NULL; 1626 } 1627 1628 /* Interpreting the returned information of the FCF record */ 1629 read_fcf = (struct lpfc_mbx_read_fcf_tbl *)virt_addr; 1630 lpfc_sli_pcimem_bcopy(read_fcf, read_fcf, 1631 sizeof(struct lpfc_mbx_read_fcf_tbl)); 1632 *next_fcf_index = bf_get(lpfc_mbx_read_fcf_tbl_nxt_vindx, read_fcf); 1633 new_fcf_record = (struct fcf_record *)(virt_addr + 1634 sizeof(struct lpfc_mbx_read_fcf_tbl)); 1635 lpfc_sli_pcimem_bcopy(new_fcf_record, new_fcf_record, 1636 offsetof(struct fcf_record, vlan_bitmap)); 1637 new_fcf_record->word137 = le32_to_cpu(new_fcf_record->word137); 1638 new_fcf_record->word138 = le32_to_cpu(new_fcf_record->word138); 1639 1640 return new_fcf_record; 1641} 1642 1643/** 1644 * lpfc_sli4_log_fcf_record_info - Log the information of a fcf record 1645 * @phba: pointer to lpfc hba data structure. 1646 * @fcf_record: pointer to the fcf record. 1647 * @vlan_id: the lowest vlan identifier associated to this fcf record. 1648 * @next_fcf_index: the index to the next fcf record in hba's fcf table. 1649 * 1650 * This routine logs the detailed FCF record if the LOG_FIP loggin is 1651 * enabled. 1652 **/ 1653static void 1654lpfc_sli4_log_fcf_record_info(struct lpfc_hba *phba, 1655 struct fcf_record *fcf_record, 1656 uint16_t vlan_id, 1657 uint16_t next_fcf_index) 1658{ 1659 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 1660 "2764 READ_FCF_RECORD:\n" 1661 "\tFCF_Index : x%x\n" 1662 "\tFCF_Avail : x%x\n" 1663 "\tFCF_Valid : x%x\n" 1664 "\tFIP_Priority : x%x\n" 1665 "\tMAC_Provider : x%x\n" 1666 "\tLowest VLANID : x%x\n" 1667 "\tFCF_MAC Addr : x%x:%x:%x:%x:%x:%x\n" 1668 "\tFabric_Name : x%x:%x:%x:%x:%x:%x:%x:%x\n" 1669 "\tSwitch_Name : x%x:%x:%x:%x:%x:%x:%x:%x\n" 1670 "\tNext_FCF_Index: x%x\n", 1671 bf_get(lpfc_fcf_record_fcf_index, fcf_record), 1672 bf_get(lpfc_fcf_record_fcf_avail, fcf_record), 1673 bf_get(lpfc_fcf_record_fcf_valid, fcf_record), 1674 fcf_record->fip_priority, 1675 bf_get(lpfc_fcf_record_mac_addr_prov, fcf_record), 1676 vlan_id, 1677 bf_get(lpfc_fcf_record_mac_0, fcf_record), 1678 bf_get(lpfc_fcf_record_mac_1, fcf_record), 1679 bf_get(lpfc_fcf_record_mac_2, fcf_record), 1680 bf_get(lpfc_fcf_record_mac_3, fcf_record), 1681 bf_get(lpfc_fcf_record_mac_4, fcf_record), 1682 bf_get(lpfc_fcf_record_mac_5, fcf_record), 1683 bf_get(lpfc_fcf_record_fab_name_0, fcf_record), 1684 bf_get(lpfc_fcf_record_fab_name_1, fcf_record), 1685 bf_get(lpfc_fcf_record_fab_name_2, fcf_record), 1686 bf_get(lpfc_fcf_record_fab_name_3, fcf_record), 1687 bf_get(lpfc_fcf_record_fab_name_4, fcf_record), 1688 bf_get(lpfc_fcf_record_fab_name_5, fcf_record), 1689 bf_get(lpfc_fcf_record_fab_name_6, fcf_record), 1690 bf_get(lpfc_fcf_record_fab_name_7, fcf_record), 1691 bf_get(lpfc_fcf_record_switch_name_0, fcf_record), 1692 bf_get(lpfc_fcf_record_switch_name_1, fcf_record), 1693 bf_get(lpfc_fcf_record_switch_name_2, fcf_record), 1694 bf_get(lpfc_fcf_record_switch_name_3, fcf_record), 1695 bf_get(lpfc_fcf_record_switch_name_4, fcf_record), 1696 bf_get(lpfc_fcf_record_switch_name_5, fcf_record), 1697 bf_get(lpfc_fcf_record_switch_name_6, fcf_record), 1698 bf_get(lpfc_fcf_record_switch_name_7, fcf_record), 1699 next_fcf_index); 1700} 1701 1702/** 1703 lpfc_sli4_fcf_record_match - testing new FCF record for matching existing FCF 1704 * @phba: pointer to lpfc hba data structure. 1705 * @fcf_rec: pointer to an existing FCF record. 1706 * @new_fcf_record: pointer to a new FCF record. 1707 * @new_vlan_id: vlan id from the new FCF record. 1708 * 1709 * This function performs matching test of a new FCF record against an existing 1710 * FCF record. If the new_vlan_id passed in is LPFC_FCOE_IGNORE_VID, vlan id 1711 * will not be used as part of the FCF record matching criteria. 1712 * 1713 * Returns true if all the fields matching, otherwise returns false. 1714 */ 1715static bool 1716lpfc_sli4_fcf_record_match(struct lpfc_hba *phba, 1717 struct lpfc_fcf_rec *fcf_rec, 1718 struct fcf_record *new_fcf_record, 1719 uint16_t new_vlan_id) 1720{ 1721 if (new_vlan_id != LPFC_FCOE_IGNORE_VID) 1722 if (!lpfc_vlan_id_match(fcf_rec->vlan_id, new_vlan_id)) 1723 return false; 1724 if (!lpfc_mac_addr_match(fcf_rec->mac_addr, new_fcf_record)) 1725 return false; 1726 if (!lpfc_sw_name_match(fcf_rec->switch_name, new_fcf_record)) 1727 return false; 1728 if (!lpfc_fab_name_match(fcf_rec->fabric_name, new_fcf_record)) 1729 return false; 1730 return true; 1731} 1732 1733/** 1734 * lpfc_mbx_cmpl_fcf_scan_read_fcf_rec - fcf scan read_fcf mbox cmpl handler. 1735 * @phba: pointer to lpfc hba data structure. 1736 * @mboxq: pointer to mailbox object. 1737 * 1738 * This function iterates through all the fcf records available in 1739 * HBA and chooses the optimal FCF record for discovery. After finding 1740 * the FCF for discovery it registers the FCF record and kicks start 1741 * discovery. 1742 * If FCF_IN_USE flag is set in currently used FCF, the routine tries to 1743 * use an FCF record which matches fabric name and mac address of the 1744 * currently used FCF record. 1745 * If the driver supports only one FCF, it will try to use the FCF record 1746 * used by BOOT_BIOS. 1747 */ 1748void 1749lpfc_mbx_cmpl_fcf_scan_read_fcf_rec(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq) 1750{ 1751 struct fcf_record *new_fcf_record; 1752 uint32_t boot_flag, addr_mode; 1753 uint16_t fcf_index, next_fcf_index; 1754 struct lpfc_fcf_rec *fcf_rec = NULL; 1755 uint16_t vlan_id; 1756 uint32_t seed; 1757 bool select_new_fcf; 1758 int rc; 1759 1760 /* If there is pending FCoE event restart FCF table scan */ 1761 if (lpfc_check_pending_fcoe_event(phba, 0)) { 1762 lpfc_sli4_mbox_cmd_free(phba, mboxq); 1763 return; 1764 } 1765 1766 /* Parse the FCF record from the non-embedded mailbox command */ 1767 new_fcf_record = lpfc_sli4_fcf_rec_mbox_parse(phba, mboxq, 1768 &next_fcf_index); 1769 if (!new_fcf_record) { 1770 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP, 1771 "2765 Mailbox command READ_FCF_RECORD " 1772 "failed to retrieve a FCF record.\n"); 1773 /* Let next new FCF event trigger fast failover */ 1774 spin_lock_irq(&phba->hbalock); 1775 phba->hba_flag &= ~FCF_DISC_INPROGRESS; 1776 spin_unlock_irq(&phba->hbalock); 1777 lpfc_sli4_mbox_cmd_free(phba, mboxq); 1778 return; 1779 } 1780 1781 /* Check the FCF record against the connection list */ 1782 rc = lpfc_match_fcf_conn_list(phba, new_fcf_record, &boot_flag, 1783 &addr_mode, &vlan_id); 1784 1785 /* Log the FCF record information if turned on */ 1786 lpfc_sli4_log_fcf_record_info(phba, new_fcf_record, vlan_id, 1787 next_fcf_index); 1788 1789 /* 1790 * If the fcf record does not match with connect list entries 1791 * read the next entry; otherwise, this is an eligible FCF 1792 * record for round robin FCF failover. 1793 */ 1794 if (!rc) { 1795 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP, 1796 "2781 FCF record (x%x) failed FCF " 1797 "connection list check, fcf_avail:x%x, " 1798 "fcf_valid:x%x\n", 1799 bf_get(lpfc_fcf_record_fcf_index, 1800 new_fcf_record), 1801 bf_get(lpfc_fcf_record_fcf_avail, 1802 new_fcf_record), 1803 bf_get(lpfc_fcf_record_fcf_valid, 1804 new_fcf_record)); 1805 if ((phba->fcf.fcf_flag & FCF_IN_USE) && 1806 lpfc_sli4_fcf_record_match(phba, &phba->fcf.current_rec, 1807 new_fcf_record, LPFC_FCOE_IGNORE_VID)) { 1808 /* 1809 * In case the current in-use FCF record becomes 1810 * invalid/unavailable during FCF discovery that 1811 * was not triggered by fast FCF failover process, 1812 * treat it as fast FCF failover. 1813 */ 1814 if (!(phba->fcf.fcf_flag & FCF_REDISC_PEND) && 1815 !(phba->fcf.fcf_flag & FCF_REDISC_FOV)) { 1816 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP, 1817 "2835 Invalid in-use FCF " 1818 "record (x%x) reported, " 1819 "entering fast FCF failover " 1820 "mode scanning.\n", 1821 phba->fcf.current_rec.fcf_indx); 1822 spin_lock_irq(&phba->hbalock); 1823 phba->fcf.fcf_flag |= FCF_REDISC_FOV; 1824 spin_unlock_irq(&phba->hbalock); 1825 lpfc_sli4_mbox_cmd_free(phba, mboxq); 1826 lpfc_sli4_fcf_scan_read_fcf_rec(phba, 1827 LPFC_FCOE_FCF_GET_FIRST); 1828 return; 1829 } 1830 } 1831 goto read_next_fcf; 1832 } else { 1833 fcf_index = bf_get(lpfc_fcf_record_fcf_index, new_fcf_record); 1834 rc = lpfc_sli4_fcf_rr_index_set(phba, fcf_index); 1835 if (rc) 1836 goto read_next_fcf; 1837 } 1838 1839 /* 1840 * If this is not the first FCF discovery of the HBA, use last 1841 * FCF record for the discovery. The condition that a rescan 1842 * matches the in-use FCF record: fabric name, switch name, mac 1843 * address, and vlan_id. 1844 */ 1845 spin_lock_irq(&phba->hbalock); 1846 if (phba->fcf.fcf_flag & FCF_IN_USE) { 1847 if (lpfc_sli4_fcf_record_match(phba, &phba->fcf.current_rec, 1848 new_fcf_record, vlan_id)) { 1849 phba->fcf.fcf_flag |= FCF_AVAILABLE; 1850 if (phba->fcf.fcf_flag & FCF_REDISC_PEND) 1851 /* Stop FCF redisc wait timer if pending */ 1852 __lpfc_sli4_stop_fcf_redisc_wait_timer(phba); 1853 else if (phba->fcf.fcf_flag & FCF_REDISC_FOV) 1854 /* If in fast failover, mark it's completed */ 1855 phba->fcf.fcf_flag &= ~FCF_REDISC_FOV; 1856 spin_unlock_irq(&phba->hbalock); 1857 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 1858 "2836 The new FCF record (x%x) " 1859 "matches the in-use FCF record " 1860 "(x%x)\n", 1861 phba->fcf.current_rec.fcf_indx, 1862 bf_get(lpfc_fcf_record_fcf_index, 1863 new_fcf_record)); 1864 goto out; 1865 } 1866 /* 1867 * Read next FCF record from HBA searching for the matching 1868 * with in-use record only if not during the fast failover 1869 * period. In case of fast failover period, it shall try to 1870 * determine whether the FCF record just read should be the 1871 * next candidate. 1872 */ 1873 if (!(phba->fcf.fcf_flag & FCF_REDISC_FOV)) { 1874 spin_unlock_irq(&phba->hbalock); 1875 goto read_next_fcf; 1876 } 1877 } 1878 /* 1879 * Update on failover FCF record only if it's in FCF fast-failover 1880 * period; otherwise, update on current FCF record. 1881 */ 1882 if (phba->fcf.fcf_flag & FCF_REDISC_FOV) 1883 fcf_rec = &phba->fcf.failover_rec; 1884 else 1885 fcf_rec = &phba->fcf.current_rec; 1886 1887 if (phba->fcf.fcf_flag & FCF_AVAILABLE) { 1888 /* 1889 * If the driver FCF record does not have boot flag 1890 * set and new hba fcf record has boot flag set, use 1891 * the new hba fcf record. 1892 */ 1893 if (boot_flag && !(fcf_rec->flag & BOOT_ENABLE)) { 1894 /* Choose this FCF record */ 1895 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 1896 "2837 Update current FCF record " 1897 "(x%x) with new FCF record (x%x)\n", 1898 fcf_rec->fcf_indx, 1899 bf_get(lpfc_fcf_record_fcf_index, 1900 new_fcf_record)); 1901 __lpfc_update_fcf_record(phba, fcf_rec, new_fcf_record, 1902 addr_mode, vlan_id, BOOT_ENABLE); 1903 spin_unlock_irq(&phba->hbalock); 1904 goto read_next_fcf; 1905 } 1906 /* 1907 * If the driver FCF record has boot flag set and the 1908 * new hba FCF record does not have boot flag, read 1909 * the next FCF record. 1910 */ 1911 if (!boot_flag && (fcf_rec->flag & BOOT_ENABLE)) { 1912 spin_unlock_irq(&phba->hbalock); 1913 goto read_next_fcf; 1914 } 1915 /* 1916 * If the new hba FCF record has lower priority value 1917 * than the driver FCF record, use the new record. 1918 */ 1919 if (new_fcf_record->fip_priority < fcf_rec->priority) { 1920 /* Choose the new FCF record with lower priority */ 1921 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 1922 "2838 Update current FCF record " 1923 "(x%x) with new FCF record (x%x)\n", 1924 fcf_rec->fcf_indx, 1925 bf_get(lpfc_fcf_record_fcf_index, 1926 new_fcf_record)); 1927 __lpfc_update_fcf_record(phba, fcf_rec, new_fcf_record, 1928 addr_mode, vlan_id, 0); 1929 /* Reset running random FCF selection count */ 1930 phba->fcf.eligible_fcf_cnt = 1; 1931 } else if (new_fcf_record->fip_priority == fcf_rec->priority) { 1932 /* Update running random FCF selection count */ 1933 phba->fcf.eligible_fcf_cnt++; 1934 select_new_fcf = lpfc_sli4_new_fcf_random_select(phba, 1935 phba->fcf.eligible_fcf_cnt); 1936 if (select_new_fcf) { 1937 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 1938 "2839 Update current FCF record " 1939 "(x%x) with new FCF record (x%x)\n", 1940 fcf_rec->fcf_indx, 1941 bf_get(lpfc_fcf_record_fcf_index, 1942 new_fcf_record)); 1943 /* Choose the new FCF by random selection */ 1944 __lpfc_update_fcf_record(phba, fcf_rec, 1945 new_fcf_record, 1946 addr_mode, vlan_id, 0); 1947 } 1948 } 1949 spin_unlock_irq(&phba->hbalock); 1950 goto read_next_fcf; 1951 } 1952 /* 1953 * This is the first suitable FCF record, choose this record for 1954 * initial best-fit FCF. 1955 */ 1956 if (fcf_rec) { 1957 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 1958 "2840 Update current FCF record " 1959 "with initial FCF record (x%x)\n", 1960 bf_get(lpfc_fcf_record_fcf_index, 1961 new_fcf_record)); 1962 __lpfc_update_fcf_record(phba, fcf_rec, new_fcf_record, 1963 addr_mode, vlan_id, (boot_flag ? 1964 BOOT_ENABLE : 0)); 1965 phba->fcf.fcf_flag |= FCF_AVAILABLE; 1966 /* Setup initial running random FCF selection count */ 1967 phba->fcf.eligible_fcf_cnt = 1; 1968 /* Seeding the random number generator for random selection */ 1969 seed = (uint32_t)(0xFFFFFFFF & jiffies); 1970 srandom32(seed); 1971 } 1972 spin_unlock_irq(&phba->hbalock); 1973 goto read_next_fcf; 1974 1975read_next_fcf: 1976 lpfc_sli4_mbox_cmd_free(phba, mboxq); 1977 if (next_fcf_index == LPFC_FCOE_FCF_NEXT_NONE || next_fcf_index == 0) { 1978 if (phba->fcf.fcf_flag & FCF_REDISC_FOV) { 1979 /* 1980 * Case of FCF fast failover scan 1981 */ 1982 1983 /* 1984 * It has not found any suitable FCF record, cancel 1985 * FCF scan inprogress, and do nothing 1986 */ 1987 if (!(phba->fcf.failover_rec.flag & RECORD_VALID)) { 1988 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP, 1989 "2782 No suitable FCF record " 1990 "found during this round of " 1991 "post FCF rediscovery scan: " 1992 "fcf_evt_tag:x%x, fcf_index: " 1993 "x%x\n", 1994 phba->fcoe_eventtag_at_fcf_scan, 1995 bf_get(lpfc_fcf_record_fcf_index, 1996 new_fcf_record)); 1997 /* 1998 * Let next new FCF event trigger fast 1999 * failover 2000 */ 2001 spin_lock_irq(&phba->hbalock); 2002 phba->hba_flag &= ~FCF_DISC_INPROGRESS; 2003 spin_unlock_irq(&phba->hbalock); 2004 return; 2005 } 2006 /* 2007 * It has found a suitable FCF record that is not 2008 * the same as in-use FCF record, unregister the 2009 * in-use FCF record, replace the in-use FCF record 2010 * with the new FCF record, mark FCF fast failover 2011 * completed, and then start register the new FCF 2012 * record. 2013 */ 2014 2015 /* Unregister the current in-use FCF record */ 2016 lpfc_unregister_fcf(phba); 2017 2018 /* Replace in-use record with the new record */ 2019 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2020 "2842 Replace the current in-use " 2021 "FCF record (x%x) with failover FCF " 2022 "record (x%x)\n", 2023 phba->fcf.current_rec.fcf_indx, 2024 phba->fcf.failover_rec.fcf_indx); 2025 memcpy(&phba->fcf.current_rec, 2026 &phba->fcf.failover_rec, 2027 sizeof(struct lpfc_fcf_rec)); 2028 /* 2029 * Mark the fast FCF failover rediscovery completed 2030 * and the start of the first round of the roundrobin 2031 * FCF failover. 2032 */ 2033 spin_lock_irq(&phba->hbalock); 2034 phba->fcf.fcf_flag &= 2035 ~(FCF_REDISC_FOV | FCF_REDISC_RRU); 2036 spin_unlock_irq(&phba->hbalock); 2037 /* 2038 * Set up the initial registered FCF index for FLOGI 2039 * round robin FCF failover. 2040 */ 2041 phba->fcf.fcf_rr_init_indx = 2042 phba->fcf.failover_rec.fcf_indx; 2043 /* Register to the new FCF record */ 2044 lpfc_register_fcf(phba); 2045 } else { 2046 /* 2047 * In case of transaction period to fast FCF failover, 2048 * do nothing when search to the end of the FCF table. 2049 */ 2050 if ((phba->fcf.fcf_flag & FCF_REDISC_EVT) || 2051 (phba->fcf.fcf_flag & FCF_REDISC_PEND)) 2052 return; 2053 2054 if (phba->fcf.fcf_flag & FCF_IN_USE) { 2055 /* 2056 * In case the current in-use FCF record no 2057 * longer existed during FCF discovery that 2058 * was not triggered by fast FCF failover 2059 * process, treat it as fast FCF failover. 2060 */ 2061 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2062 "2841 In-use FCF record (x%x) " 2063 "not reported, entering fast " 2064 "FCF failover mode scanning.\n", 2065 phba->fcf.current_rec.fcf_indx); 2066 spin_lock_irq(&phba->hbalock); 2067 phba->fcf.fcf_flag |= FCF_REDISC_FOV; 2068 spin_unlock_irq(&phba->hbalock); 2069 lpfc_sli4_mbox_cmd_free(phba, mboxq); 2070 lpfc_sli4_fcf_scan_read_fcf_rec(phba, 2071 LPFC_FCOE_FCF_GET_FIRST); 2072 return; 2073 } 2074 2075 /* 2076 * Otherwise, initial scan or post linkdown rescan, 2077 * register with the best FCF record found so far 2078 * through the FCF scanning process. 2079 */ 2080 2081 /* 2082 * Mark the initial FCF discovery completed and 2083 * the start of the first round of the roundrobin 2084 * FCF failover. 2085 */ 2086 spin_lock_irq(&phba->hbalock); 2087 phba->fcf.fcf_flag &= 2088 ~(FCF_INIT_DISC | FCF_REDISC_RRU); 2089 spin_unlock_irq(&phba->hbalock); 2090 /* 2091 * Set up the initial registered FCF index for FLOGI 2092 * round robin FCF failover 2093 */ 2094 phba->fcf.fcf_rr_init_indx = 2095 phba->fcf.current_rec.fcf_indx; 2096 /* Register to the new FCF record */ 2097 lpfc_register_fcf(phba); 2098 } 2099 } else 2100 lpfc_sli4_fcf_scan_read_fcf_rec(phba, next_fcf_index); 2101 return; 2102 2103out: 2104 lpfc_sli4_mbox_cmd_free(phba, mboxq); 2105 lpfc_register_fcf(phba); 2106 2107 return; 2108} 2109 2110/** 2111 * lpfc_mbx_cmpl_fcf_rr_read_fcf_rec - fcf round robin read_fcf mbox cmpl hdler 2112 * @phba: pointer to lpfc hba data structure. 2113 * @mboxq: pointer to mailbox object. 2114 * 2115 * This is the callback function for FLOGI failure round robin FCF failover 2116 * read FCF record mailbox command from the eligible FCF record bmask for 2117 * performing the failover. If the FCF read back is not valid/available, it 2118 * fails through to retrying FLOGI to the currently registered FCF again. 2119 * Otherwise, if the FCF read back is valid and available, it will set the 2120 * newly read FCF record to the failover FCF record, unregister currently 2121 * registered FCF record, copy the failover FCF record to the current 2122 * FCF record, and then register the current FCF record before proceeding 2123 * to trying FLOGI on the new failover FCF. 2124 */ 2125void 2126lpfc_mbx_cmpl_fcf_rr_read_fcf_rec(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq) 2127{ 2128 struct fcf_record *new_fcf_record; 2129 uint32_t boot_flag, addr_mode; 2130 uint16_t next_fcf_index; 2131 uint16_t current_fcf_index; 2132 uint16_t vlan_id; 2133 2134 /* If link state is not up, stop the round robin failover process */ 2135 if (phba->link_state < LPFC_LINK_UP) { 2136 spin_lock_irq(&phba->hbalock); 2137 phba->fcf.fcf_flag &= ~FCF_DISCOVERY; 2138 spin_unlock_irq(&phba->hbalock); 2139 lpfc_sli4_mbox_cmd_free(phba, mboxq); 2140 return; 2141 } 2142 2143 /* Parse the FCF record from the non-embedded mailbox command */ 2144 new_fcf_record = lpfc_sli4_fcf_rec_mbox_parse(phba, mboxq, 2145 &next_fcf_index); 2146 if (!new_fcf_record) { 2147 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP, 2148 "2766 Mailbox command READ_FCF_RECORD " 2149 "failed to retrieve a FCF record.\n"); 2150 goto out; 2151 } 2152 2153 /* Get the needed parameters from FCF record */ 2154 lpfc_match_fcf_conn_list(phba, new_fcf_record, &boot_flag, 2155 &addr_mode, &vlan_id); 2156 2157 /* Log the FCF record information if turned on */ 2158 lpfc_sli4_log_fcf_record_info(phba, new_fcf_record, vlan_id, 2159 next_fcf_index); 2160 2161 /* Upload new FCF record to the failover FCF record */ 2162 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2163 "2834 Update the current FCF record (x%x) " 2164 "with the next FCF record (x%x)\n", 2165 phba->fcf.failover_rec.fcf_indx, 2166 bf_get(lpfc_fcf_record_fcf_index, new_fcf_record)); 2167 spin_lock_irq(&phba->hbalock); 2168 __lpfc_update_fcf_record(phba, &phba->fcf.failover_rec, 2169 new_fcf_record, addr_mode, vlan_id, 2170 (boot_flag ? BOOT_ENABLE : 0)); 2171 spin_unlock_irq(&phba->hbalock); 2172 2173 current_fcf_index = phba->fcf.current_rec.fcf_indx; 2174 2175 /* Unregister the current in-use FCF record */ 2176 lpfc_unregister_fcf(phba); 2177 2178 /* Replace in-use record with the new record */ 2179 memcpy(&phba->fcf.current_rec, &phba->fcf.failover_rec, 2180 sizeof(struct lpfc_fcf_rec)); 2181 2182 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2183 "2783 FLOGI round robin FCF failover from FCF " 2184 "(x%x) to FCF (x%x).\n", 2185 current_fcf_index, 2186 bf_get(lpfc_fcf_record_fcf_index, new_fcf_record)); 2187 2188out: 2189 lpfc_sli4_mbox_cmd_free(phba, mboxq); 2190 lpfc_register_fcf(phba); 2191} 2192 2193/** 2194 * lpfc_mbx_cmpl_read_fcf_rec - read fcf completion handler. 2195 * @phba: pointer to lpfc hba data structure. 2196 * @mboxq: pointer to mailbox object. 2197 * 2198 * This is the callback function of read FCF record mailbox command for 2199 * updating the eligible FCF bmask for FLOGI failure round robin FCF 2200 * failover when a new FCF event happened. If the FCF read back is 2201 * valid/available and it passes the connection list check, it updates 2202 * the bmask for the eligible FCF record for round robin failover. 2203 */ 2204void 2205lpfc_mbx_cmpl_read_fcf_rec(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq) 2206{ 2207 struct fcf_record *new_fcf_record; 2208 uint32_t boot_flag, addr_mode; 2209 uint16_t fcf_index, next_fcf_index; 2210 uint16_t vlan_id; 2211 int rc; 2212 2213 /* If link state is not up, no need to proceed */ 2214 if (phba->link_state < LPFC_LINK_UP) 2215 goto out; 2216 2217 /* If FCF discovery period is over, no need to proceed */ 2218 if (!(phba->fcf.fcf_flag & FCF_DISCOVERY)) 2219 goto out; 2220 2221 /* Parse the FCF record from the non-embedded mailbox command */ 2222 new_fcf_record = lpfc_sli4_fcf_rec_mbox_parse(phba, mboxq, 2223 &next_fcf_index); 2224 if (!new_fcf_record) { 2225 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2226 "2767 Mailbox command READ_FCF_RECORD " 2227 "failed to retrieve a FCF record.\n"); 2228 goto out; 2229 } 2230 2231 /* Check the connection list for eligibility */ 2232 rc = lpfc_match_fcf_conn_list(phba, new_fcf_record, &boot_flag, 2233 &addr_mode, &vlan_id); 2234 2235 /* Log the FCF record information if turned on */ 2236 lpfc_sli4_log_fcf_record_info(phba, new_fcf_record, vlan_id, 2237 next_fcf_index); 2238 2239 if (!rc) 2240 goto out; 2241 2242 /* Update the eligible FCF record index bmask */ 2243 fcf_index = bf_get(lpfc_fcf_record_fcf_index, new_fcf_record); 2244 rc = lpfc_sli4_fcf_rr_index_set(phba, fcf_index); 2245 2246out: 2247 lpfc_sli4_mbox_cmd_free(phba, mboxq); 2248} 2249 2250/** 2251 * lpfc_init_vpi_cmpl - Completion handler for init_vpi mbox command. 2252 * @phba: pointer to lpfc hba data structure. 2253 * @mboxq: pointer to mailbox data structure. 2254 * 2255 * This function handles completion of init vpi mailbox command. 2256 */ 2257void 2258lpfc_init_vpi_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq) 2259{ 2260 struct lpfc_vport *vport = mboxq->vport; 2261 struct lpfc_nodelist *ndlp; 2262 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 2263 2264 if (mboxq->u.mb.mbxStatus) { 2265 lpfc_printf_vlog(vport, KERN_ERR, 2266 LOG_MBOX, 2267 "2609 Init VPI mailbox failed 0x%x\n", 2268 mboxq->u.mb.mbxStatus); 2269 mempool_free(mboxq, phba->mbox_mem_pool); 2270 lpfc_vport_set_state(vport, FC_VPORT_FAILED); 2271 return; 2272 } 2273 spin_lock_irq(shost->host_lock); 2274 vport->fc_flag &= ~FC_VPORT_NEEDS_INIT_VPI; 2275 spin_unlock_irq(shost->host_lock); 2276 2277 /* If this port is physical port or FDISC is done, do reg_vpi */ 2278 if ((phba->pport == vport) || (vport->port_state == LPFC_FDISC)) { 2279 ndlp = lpfc_findnode_did(vport, Fabric_DID); 2280 if (!ndlp) 2281 lpfc_printf_vlog(vport, KERN_ERR, 2282 LOG_DISCOVERY, 2283 "2731 Cannot find fabric " 2284 "controller node\n"); 2285 else 2286 lpfc_register_new_vport(phba, vport, ndlp); 2287 mempool_free(mboxq, phba->mbox_mem_pool); 2288 return; 2289 } 2290 2291 if (phba->link_flag & LS_NPIV_FAB_SUPPORTED) 2292 lpfc_initial_fdisc(vport); 2293 else { 2294 lpfc_vport_set_state(vport, FC_VPORT_NO_FABRIC_SUPP); 2295 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS, 2296 "2606 No NPIV Fabric support\n"); 2297 } 2298 mempool_free(mboxq, phba->mbox_mem_pool); 2299 return; 2300} 2301 2302/** 2303 * lpfc_issue_init_vpi - Issue init_vpi mailbox command. 2304 * @vport: pointer to lpfc_vport data structure. 2305 * 2306 * This function issue a init_vpi mailbox command to initialize 2307 * VPI for the vport. 2308 */ 2309void 2310lpfc_issue_init_vpi(struct lpfc_vport *vport) 2311{ 2312 LPFC_MBOXQ_t *mboxq; 2313 int rc; 2314 2315 mboxq = mempool_alloc(vport->phba->mbox_mem_pool, GFP_KERNEL); 2316 if (!mboxq) { 2317 lpfc_printf_vlog(vport, KERN_ERR, 2318 LOG_MBOX, "2607 Failed to allocate " 2319 "init_vpi mailbox\n"); 2320 return; 2321 } 2322 lpfc_init_vpi(vport->phba, mboxq, vport->vpi); 2323 mboxq->vport = vport; 2324 mboxq->mbox_cmpl = lpfc_init_vpi_cmpl; 2325 rc = lpfc_sli_issue_mbox(vport->phba, mboxq, MBX_NOWAIT); 2326 if (rc == MBX_NOT_FINISHED) { 2327 lpfc_printf_vlog(vport, KERN_ERR, 2328 LOG_MBOX, "2608 Failed to issue init_vpi mailbox\n"); 2329 mempool_free(mboxq, vport->phba->mbox_mem_pool); 2330 } 2331} 2332 2333/** 2334 * lpfc_start_fdiscs - send fdiscs for each vports on this port. 2335 * @phba: pointer to lpfc hba data structure. 2336 * 2337 * This function loops through the list of vports on the @phba and issues an 2338 * FDISC if possible. 2339 */ 2340void 2341lpfc_start_fdiscs(struct lpfc_hba *phba) 2342{ 2343 struct lpfc_vport **vports; 2344 int i; 2345 2346 vports = lpfc_create_vport_work_array(phba); 2347 if (vports != NULL) { 2348 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) { 2349 if (vports[i]->port_type == LPFC_PHYSICAL_PORT) 2350 continue; 2351 /* There are no vpi for this vport */ 2352 if (vports[i]->vpi > phba->max_vpi) { 2353 lpfc_vport_set_state(vports[i], 2354 FC_VPORT_FAILED); 2355 continue; 2356 } 2357 if (phba->fc_topology == TOPOLOGY_LOOP) { 2358 lpfc_vport_set_state(vports[i], 2359 FC_VPORT_LINKDOWN); 2360 continue; 2361 } 2362 if (vports[i]->fc_flag & FC_VPORT_NEEDS_INIT_VPI) { 2363 lpfc_issue_init_vpi(vports[i]); 2364 continue; 2365 } 2366 if (phba->link_flag & LS_NPIV_FAB_SUPPORTED) 2367 lpfc_initial_fdisc(vports[i]); 2368 else { 2369 lpfc_vport_set_state(vports[i], 2370 FC_VPORT_NO_FABRIC_SUPP); 2371 lpfc_printf_vlog(vports[i], KERN_ERR, 2372 LOG_ELS, 2373 "0259 No NPIV " 2374 "Fabric support\n"); 2375 } 2376 } 2377 } 2378 lpfc_destroy_vport_work_array(phba, vports); 2379} 2380 2381void 2382lpfc_mbx_cmpl_reg_vfi(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq) 2383{ 2384 struct lpfc_dmabuf *dmabuf = mboxq->context1; 2385 struct lpfc_vport *vport = mboxq->vport; 2386 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 2387 2388 if (mboxq->u.mb.mbxStatus) { 2389 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX, 2390 "2018 REG_VFI mbxStatus error x%x " 2391 "HBA state x%x\n", 2392 mboxq->u.mb.mbxStatus, vport->port_state); 2393 if (phba->fc_topology == TOPOLOGY_LOOP) { 2394 /* FLOGI failed, use loop map to make discovery list */ 2395 lpfc_disc_list_loopmap(vport); 2396 /* Start discovery */ 2397 lpfc_disc_start(vport); 2398 goto fail_free_mem; 2399 } 2400 lpfc_vport_set_state(vport, FC_VPORT_FAILED); 2401 goto fail_free_mem; 2402 } 2403 /* The VPI is implicitly registered when the VFI is registered */ 2404 spin_lock_irq(shost->host_lock); 2405 vport->vpi_state |= LPFC_VPI_REGISTERED; 2406 vport->fc_flag |= FC_VFI_REGISTERED; 2407 vport->fc_flag &= ~FC_VPORT_NEEDS_REG_VPI; 2408 spin_unlock_irq(shost->host_lock); 2409 2410 if (vport->port_state == LPFC_FABRIC_CFG_LINK) { 2411 lpfc_start_fdiscs(phba); 2412 lpfc_do_scr_ns_plogi(phba, vport); 2413 } 2414 2415fail_free_mem: 2416 mempool_free(mboxq, phba->mbox_mem_pool); 2417 lpfc_mbuf_free(phba, dmabuf->virt, dmabuf->phys); 2418 kfree(dmabuf); 2419 return; 2420} 2421 2422static void 2423lpfc_mbx_cmpl_read_sparam(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 2424{ 2425 MAILBOX_t *mb = &pmb->u.mb; 2426 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) pmb->context1; 2427 struct lpfc_vport *vport = pmb->vport; 2428 2429 2430 /* Check for error */ 2431 if (mb->mbxStatus) { 2432 /* READ_SPARAM mbox error <mbxStatus> state <hba_state> */ 2433 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX, 2434 "0319 READ_SPARAM mbxStatus error x%x " 2435 "hba state x%x>\n", 2436 mb->mbxStatus, vport->port_state); 2437 lpfc_linkdown(phba); 2438 goto out; 2439 } 2440 2441 memcpy((uint8_t *) &vport->fc_sparam, (uint8_t *) mp->virt, 2442 sizeof (struct serv_parm)); 2443 if (phba->cfg_soft_wwnn) 2444 u64_to_wwn(phba->cfg_soft_wwnn, 2445 vport->fc_sparam.nodeName.u.wwn); 2446 if (phba->cfg_soft_wwpn) 2447 u64_to_wwn(phba->cfg_soft_wwpn, 2448 vport->fc_sparam.portName.u.wwn); 2449 memcpy(&vport->fc_nodename, &vport->fc_sparam.nodeName, 2450 sizeof(vport->fc_nodename)); 2451 memcpy(&vport->fc_portname, &vport->fc_sparam.portName, 2452 sizeof(vport->fc_portname)); 2453 if (vport->port_type == LPFC_PHYSICAL_PORT) { 2454 memcpy(&phba->wwnn, &vport->fc_nodename, sizeof(phba->wwnn)); 2455 memcpy(&phba->wwpn, &vport->fc_portname, sizeof(phba->wwnn)); 2456 } 2457 2458 lpfc_mbuf_free(phba, mp->virt, mp->phys); 2459 kfree(mp); 2460 mempool_free(pmb, phba->mbox_mem_pool); 2461 return; 2462 2463out: 2464 pmb->context1 = NULL; 2465 lpfc_mbuf_free(phba, mp->virt, mp->phys); 2466 kfree(mp); 2467 lpfc_issue_clear_la(phba, vport); 2468 mempool_free(pmb, phba->mbox_mem_pool); 2469 return; 2470} 2471 2472static void 2473lpfc_mbx_process_link_up(struct lpfc_hba *phba, READ_LA_VAR *la) 2474{ 2475 struct lpfc_vport *vport = phba->pport; 2476 LPFC_MBOXQ_t *sparam_mbox, *cfglink_mbox = NULL; 2477 int i; 2478 struct lpfc_dmabuf *mp; 2479 int rc; 2480 struct fcf_record *fcf_record; 2481 2482 spin_lock_irq(&phba->hbalock); 2483 switch (la->UlnkSpeed) { 2484 case LA_1GHZ_LINK: 2485 phba->fc_linkspeed = LA_1GHZ_LINK; 2486 break; 2487 case LA_2GHZ_LINK: 2488 phba->fc_linkspeed = LA_2GHZ_LINK; 2489 break; 2490 case LA_4GHZ_LINK: 2491 phba->fc_linkspeed = LA_4GHZ_LINK; 2492 break; 2493 case LA_8GHZ_LINK: 2494 phba->fc_linkspeed = LA_8GHZ_LINK; 2495 break; 2496 case LA_10GHZ_LINK: 2497 phba->fc_linkspeed = LA_10GHZ_LINK; 2498 break; 2499 default: 2500 phba->fc_linkspeed = LA_UNKNW_LINK; 2501 break; 2502 } 2503 2504 phba->fc_topology = la->topology; 2505 phba->link_flag &= ~LS_NPIV_FAB_SUPPORTED; 2506 2507 if (phba->fc_topology == TOPOLOGY_LOOP) { 2508 phba->sli3_options &= ~LPFC_SLI3_NPIV_ENABLED; 2509 2510 /* if npiv is enabled and this adapter supports npiv log 2511 * a message that npiv is not supported in this topology 2512 */ 2513 if (phba->cfg_enable_npiv && phba->max_vpi) 2514 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT, 2515 "1309 Link Up Event npiv not supported in loop " 2516 "topology\n"); 2517 /* Get Loop Map information */ 2518 if (la->il) 2519 vport->fc_flag |= FC_LBIT; 2520 2521 vport->fc_myDID = la->granted_AL_PA; 2522 i = la->un.lilpBde64.tus.f.bdeSize; 2523 2524 if (i == 0) { 2525 phba->alpa_map[0] = 0; 2526 } else { 2527 if (vport->cfg_log_verbose & LOG_LINK_EVENT) { 2528 int numalpa, j, k; 2529 union { 2530 uint8_t pamap[16]; 2531 struct { 2532 uint32_t wd1; 2533 uint32_t wd2; 2534 uint32_t wd3; 2535 uint32_t wd4; 2536 } pa; 2537 } un; 2538 numalpa = phba->alpa_map[0]; 2539 j = 0; 2540 while (j < numalpa) { 2541 memset(un.pamap, 0, 16); 2542 for (k = 1; j < numalpa; k++) { 2543 un.pamap[k - 1] = 2544 phba->alpa_map[j + 1]; 2545 j++; 2546 if (k == 16) 2547 break; 2548 } 2549 /* Link Up Event ALPA map */ 2550 lpfc_printf_log(phba, 2551 KERN_WARNING, 2552 LOG_LINK_EVENT, 2553 "1304 Link Up Event " 2554 "ALPA map Data: x%x " 2555 "x%x x%x x%x\n", 2556 un.pa.wd1, un.pa.wd2, 2557 un.pa.wd3, un.pa.wd4); 2558 } 2559 } 2560 } 2561 } else { 2562 if (!(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)) { 2563 if (phba->max_vpi && phba->cfg_enable_npiv && 2564 (phba->sli_rev == 3)) 2565 phba->sli3_options |= LPFC_SLI3_NPIV_ENABLED; 2566 } 2567 vport->fc_myDID = phba->fc_pref_DID; 2568 vport->fc_flag |= FC_LBIT; 2569 } 2570 spin_unlock_irq(&phba->hbalock); 2571 2572 lpfc_linkup(phba); 2573 sparam_mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 2574 if (!sparam_mbox) 2575 goto out; 2576 2577 rc = lpfc_read_sparam(phba, sparam_mbox, 0); 2578 if (rc) { 2579 mempool_free(sparam_mbox, phba->mbox_mem_pool); 2580 goto out; 2581 } 2582 sparam_mbox->vport = vport; 2583 sparam_mbox->mbox_cmpl = lpfc_mbx_cmpl_read_sparam; 2584 rc = lpfc_sli_issue_mbox(phba, sparam_mbox, MBX_NOWAIT); 2585 if (rc == MBX_NOT_FINISHED) { 2586 mp = (struct lpfc_dmabuf *) sparam_mbox->context1; 2587 lpfc_mbuf_free(phba, mp->virt, mp->phys); 2588 kfree(mp); 2589 mempool_free(sparam_mbox, phba->mbox_mem_pool); 2590 goto out; 2591 } 2592 2593 if (!(phba->hba_flag & HBA_FCOE_SUPPORT)) { 2594 cfglink_mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 2595 if (!cfglink_mbox) 2596 goto out; 2597 vport->port_state = LPFC_LOCAL_CFG_LINK; 2598 lpfc_config_link(phba, cfglink_mbox); 2599 cfglink_mbox->vport = vport; 2600 cfglink_mbox->mbox_cmpl = lpfc_mbx_cmpl_local_config_link; 2601 rc = lpfc_sli_issue_mbox(phba, cfglink_mbox, MBX_NOWAIT); 2602 if (rc == MBX_NOT_FINISHED) { 2603 mempool_free(cfglink_mbox, phba->mbox_mem_pool); 2604 goto out; 2605 } 2606 } else { 2607 vport->port_state = LPFC_VPORT_UNKNOWN; 2608 /* 2609 * Add the driver's default FCF record at FCF index 0 now. This 2610 * is phase 1 implementation that support FCF index 0 and driver 2611 * defaults. 2612 */ 2613 if (!(phba->hba_flag & HBA_FIP_SUPPORT)) { 2614 fcf_record = kzalloc(sizeof(struct fcf_record), 2615 GFP_KERNEL); 2616 if (unlikely(!fcf_record)) { 2617 lpfc_printf_log(phba, KERN_ERR, 2618 LOG_MBOX | LOG_SLI, 2619 "2554 Could not allocate memmory for " 2620 "fcf record\n"); 2621 rc = -ENODEV; 2622 goto out; 2623 } 2624 2625 lpfc_sli4_build_dflt_fcf_record(phba, fcf_record, 2626 LPFC_FCOE_FCF_DEF_INDEX); 2627 rc = lpfc_sli4_add_fcf_record(phba, fcf_record); 2628 if (unlikely(rc)) { 2629 lpfc_printf_log(phba, KERN_ERR, 2630 LOG_MBOX | LOG_SLI, 2631 "2013 Could not manually add FCF " 2632 "record 0, status %d\n", rc); 2633 rc = -ENODEV; 2634 kfree(fcf_record); 2635 goto out; 2636 } 2637 kfree(fcf_record); 2638 } 2639 /* 2640 * The driver is expected to do FIP/FCF. Call the port 2641 * and get the FCF Table. 2642 */ 2643 spin_lock_irq(&phba->hbalock); 2644 if (phba->hba_flag & FCF_DISC_INPROGRESS) { 2645 spin_unlock_irq(&phba->hbalock); 2646 return; 2647 } 2648 /* This is the initial FCF discovery scan */ 2649 phba->fcf.fcf_flag |= FCF_INIT_DISC; 2650 spin_unlock_irq(&phba->hbalock); 2651 lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY, 2652 "2778 Start FCF table scan at linkup\n"); 2653 rc = lpfc_sli4_fcf_scan_read_fcf_rec(phba, 2654 LPFC_FCOE_FCF_GET_FIRST); 2655 if (rc) { 2656 spin_lock_irq(&phba->hbalock); 2657 phba->fcf.fcf_flag &= ~FCF_INIT_DISC; 2658 spin_unlock_irq(&phba->hbalock); 2659 goto out; 2660 } 2661 /* Reset FCF roundrobin bmask for new discovery */ 2662 memset(phba->fcf.fcf_rr_bmask, 0, 2663 sizeof(*phba->fcf.fcf_rr_bmask)); 2664 } 2665 2666 return; 2667out: 2668 lpfc_vport_set_state(vport, FC_VPORT_FAILED); 2669 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX, 2670 "0263 Discovery Mailbox error: state: 0x%x : %p %p\n", 2671 vport->port_state, sparam_mbox, cfglink_mbox); 2672 lpfc_issue_clear_la(phba, vport); 2673 return; 2674} 2675 2676static void 2677lpfc_enable_la(struct lpfc_hba *phba) 2678{ 2679 uint32_t control; 2680 struct lpfc_sli *psli = &phba->sli; 2681 spin_lock_irq(&phba->hbalock); 2682 psli->sli_flag |= LPFC_PROCESS_LA; 2683 if (phba->sli_rev <= LPFC_SLI_REV3) { 2684 control = readl(phba->HCregaddr); 2685 control |= HC_LAINT_ENA; 2686 writel(control, phba->HCregaddr); 2687 readl(phba->HCregaddr); /* flush */ 2688 } 2689 spin_unlock_irq(&phba->hbalock); 2690} 2691 2692static void 2693lpfc_mbx_issue_link_down(struct lpfc_hba *phba) 2694{ 2695 lpfc_linkdown(phba); 2696 lpfc_enable_la(phba); 2697 lpfc_unregister_unused_fcf(phba); 2698 /* turn on Link Attention interrupts - no CLEAR_LA needed */ 2699} 2700 2701 2702/* 2703 * This routine handles processing a READ_LA mailbox 2704 * command upon completion. It is setup in the LPFC_MBOXQ 2705 * as the completion routine when the command is 2706 * handed off to the SLI layer. 2707 */ 2708void 2709lpfc_mbx_cmpl_read_la(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 2710{ 2711 struct lpfc_vport *vport = pmb->vport; 2712 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 2713 READ_LA_VAR *la; 2714 MAILBOX_t *mb = &pmb->u.mb; 2715 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1); 2716 2717 /* Unblock ELS traffic */ 2718 phba->sli.ring[LPFC_ELS_RING].flag &= ~LPFC_STOP_IOCB_EVENT; 2719 /* Check for error */ 2720 if (mb->mbxStatus) { 2721 lpfc_printf_log(phba, KERN_INFO, LOG_LINK_EVENT, 2722 "1307 READ_LA mbox error x%x state x%x\n", 2723 mb->mbxStatus, vport->port_state); 2724 lpfc_mbx_issue_link_down(phba); 2725 phba->link_state = LPFC_HBA_ERROR; 2726 goto lpfc_mbx_cmpl_read_la_free_mbuf; 2727 } 2728 2729 la = (READ_LA_VAR *) &pmb->u.mb.un.varReadLA; 2730 2731 memcpy(&phba->alpa_map[0], mp->virt, 128); 2732 2733 spin_lock_irq(shost->host_lock); 2734 if (la->pb) 2735 vport->fc_flag |= FC_BYPASSED_MODE; 2736 else 2737 vport->fc_flag &= ~FC_BYPASSED_MODE; 2738 spin_unlock_irq(shost->host_lock); 2739 2740 if ((phba->fc_eventTag < la->eventTag) || 2741 (phba->fc_eventTag == la->eventTag)) { 2742 phba->fc_stat.LinkMultiEvent++; 2743 if (la->attType == AT_LINK_UP) 2744 if (phba->fc_eventTag != 0) 2745 lpfc_linkdown(phba); 2746 } 2747 2748 phba->fc_eventTag = la->eventTag; 2749 spin_lock_irq(&phba->hbalock); 2750 if (la->mm) 2751 phba->sli.sli_flag |= LPFC_MENLO_MAINT; 2752 else 2753 phba->sli.sli_flag &= ~LPFC_MENLO_MAINT; 2754 spin_unlock_irq(&phba->hbalock); 2755 2756 phba->link_events++; 2757 if (la->attType == AT_LINK_UP && (!la->mm)) { 2758 phba->fc_stat.LinkUp++; 2759 if (phba->link_flag & LS_LOOPBACK_MODE) { 2760 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT, 2761 "1306 Link Up Event in loop back mode " 2762 "x%x received Data: x%x x%x x%x x%x\n", 2763 la->eventTag, phba->fc_eventTag, 2764 la->granted_AL_PA, la->UlnkSpeed, 2765 phba->alpa_map[0]); 2766 } else { 2767 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT, 2768 "1303 Link Up Event x%x received " 2769 "Data: x%x x%x x%x x%x x%x x%x %d\n", 2770 la->eventTag, phba->fc_eventTag, 2771 la->granted_AL_PA, la->UlnkSpeed, 2772 phba->alpa_map[0], 2773 la->mm, la->fa, 2774 phba->wait_4_mlo_maint_flg); 2775 } 2776 lpfc_mbx_process_link_up(phba, la); 2777 } else if (la->attType == AT_LINK_DOWN) { 2778 phba->fc_stat.LinkDown++; 2779 if (phba->link_flag & LS_LOOPBACK_MODE) { 2780 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT, 2781 "1308 Link Down Event in loop back mode " 2782 "x%x received " 2783 "Data: x%x x%x x%x\n", 2784 la->eventTag, phba->fc_eventTag, 2785 phba->pport->port_state, vport->fc_flag); 2786 } 2787 else { 2788 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT, 2789 "1305 Link Down Event x%x received " 2790 "Data: x%x x%x x%x x%x x%x\n", 2791 la->eventTag, phba->fc_eventTag, 2792 phba->pport->port_state, vport->fc_flag, 2793 la->mm, la->fa); 2794 } 2795 lpfc_mbx_issue_link_down(phba); 2796 } 2797 if (la->mm && la->attType == AT_LINK_UP) { 2798 if (phba->link_state != LPFC_LINK_DOWN) { 2799 phba->fc_stat.LinkDown++; 2800 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT, 2801 "1312 Link Down Event x%x received " 2802 "Data: x%x x%x x%x\n", 2803 la->eventTag, phba->fc_eventTag, 2804 phba->pport->port_state, vport->fc_flag); 2805 lpfc_mbx_issue_link_down(phba); 2806 } else 2807 lpfc_enable_la(phba); 2808 2809 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT, 2810 "1310 Menlo Maint Mode Link up Event x%x rcvd " 2811 "Data: x%x x%x x%x\n", 2812 la->eventTag, phba->fc_eventTag, 2813 phba->pport->port_state, vport->fc_flag); 2814 /* 2815 * The cmnd that triggered this will be waiting for this 2816 * signal. 2817 */ 2818 /* WAKEUP for MENLO_SET_MODE or MENLO_RESET command. */ 2819 if (phba->wait_4_mlo_maint_flg) { 2820 phba->wait_4_mlo_maint_flg = 0; 2821 wake_up_interruptible(&phba->wait_4_mlo_m_q); 2822 } 2823 } 2824 2825 if (la->fa) { 2826 if (la->mm) 2827 lpfc_issue_clear_la(phba, vport); 2828 lpfc_printf_log(phba, KERN_INFO, LOG_LINK_EVENT, 2829 "1311 fa %d\n", la->fa); 2830 } 2831 2832lpfc_mbx_cmpl_read_la_free_mbuf: 2833 lpfc_mbuf_free(phba, mp->virt, mp->phys); 2834 kfree(mp); 2835 mempool_free(pmb, phba->mbox_mem_pool); 2836 return; 2837} 2838 2839/* 2840 * This routine handles processing a REG_LOGIN mailbox 2841 * command upon completion. It is setup in the LPFC_MBOXQ 2842 * as the completion routine when the command is 2843 * handed off to the SLI layer. 2844 */ 2845void 2846lpfc_mbx_cmpl_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 2847{ 2848 struct lpfc_vport *vport = pmb->vport; 2849 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1); 2850 struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) pmb->context2; 2851 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 2852 2853 pmb->context1 = NULL; 2854 2855 if (ndlp->nlp_flag & NLP_REG_LOGIN_SEND) 2856 ndlp->nlp_flag &= ~NLP_REG_LOGIN_SEND; 2857 2858 if (ndlp->nlp_flag & NLP_IGNR_REG_CMPL || 2859 ndlp->nlp_state != NLP_STE_REG_LOGIN_ISSUE) { 2860 /* We rcvd a rscn after issuing this 2861 * mbox reg login, we may have cycled 2862 * back through the state and be 2863 * back at reg login state so this 2864 * mbox needs to be ignored becase 2865 * there is another reg login in 2866 * proccess. 2867 */ 2868 spin_lock_irq(shost->host_lock); 2869 ndlp->nlp_flag &= ~NLP_IGNR_REG_CMPL; 2870 spin_unlock_irq(shost->host_lock); 2871 if (phba->sli_rev == LPFC_SLI_REV4) 2872 lpfc_sli4_free_rpi(phba, 2873 pmb->u.mb.un.varRegLogin.rpi); 2874 2875 } else 2876 /* Good status, call state machine */ 2877 lpfc_disc_state_machine(vport, ndlp, pmb, 2878 NLP_EVT_CMPL_REG_LOGIN); 2879 2880 lpfc_mbuf_free(phba, mp->virt, mp->phys); 2881 kfree(mp); 2882 mempool_free(pmb, phba->mbox_mem_pool); 2883 /* decrement the node reference count held for this callback 2884 * function. 2885 */ 2886 lpfc_nlp_put(ndlp); 2887 2888 return; 2889} 2890 2891static void 2892lpfc_mbx_cmpl_unreg_vpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 2893{ 2894 MAILBOX_t *mb = &pmb->u.mb; 2895 struct lpfc_vport *vport = pmb->vport; 2896 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 2897 2898 switch (mb->mbxStatus) { 2899 case 0x0011: 2900 case 0x0020: 2901 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE, 2902 "0911 cmpl_unreg_vpi, mb status = 0x%x\n", 2903 mb->mbxStatus); 2904 break; 2905 /* If VPI is busy, reset the HBA */ 2906 case 0x9700: 2907 lpfc_printf_vlog(vport, KERN_ERR, LOG_NODE, 2908 "2798 Unreg_vpi failed vpi 0x%x, mb status = 0x%x\n", 2909 vport->vpi, mb->mbxStatus); 2910 if (!(phba->pport->load_flag & FC_UNLOADING)) 2911 lpfc_workq_post_event(phba, NULL, NULL, 2912 LPFC_EVT_RESET_HBA); 2913 } 2914 spin_lock_irq(shost->host_lock); 2915 vport->vpi_state &= ~LPFC_VPI_REGISTERED; 2916 vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI; 2917 spin_unlock_irq(shost->host_lock); 2918 vport->unreg_vpi_cmpl = VPORT_OK; 2919 mempool_free(pmb, phba->mbox_mem_pool); 2920 /* 2921 * This shost reference might have been taken at the beginning of 2922 * lpfc_vport_delete() 2923 */ 2924 if ((vport->load_flag & FC_UNLOADING) && (vport != phba->pport)) 2925 scsi_host_put(shost); 2926} 2927 2928int 2929lpfc_mbx_unreg_vpi(struct lpfc_vport *vport) 2930{ 2931 struct lpfc_hba *phba = vport->phba; 2932 LPFC_MBOXQ_t *mbox; 2933 int rc; 2934 2935 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 2936 if (!mbox) 2937 return 1; 2938 2939 lpfc_unreg_vpi(phba, vport->vpi, mbox); 2940 mbox->vport = vport; 2941 mbox->mbox_cmpl = lpfc_mbx_cmpl_unreg_vpi; 2942 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT); 2943 if (rc == MBX_NOT_FINISHED) { 2944 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX | LOG_VPORT, 2945 "1800 Could not issue unreg_vpi\n"); 2946 mempool_free(mbox, phba->mbox_mem_pool); 2947 vport->unreg_vpi_cmpl = VPORT_ERROR; 2948 return rc; 2949 } 2950 return 0; 2951} 2952 2953static void 2954lpfc_mbx_cmpl_reg_vpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 2955{ 2956 struct lpfc_vport *vport = pmb->vport; 2957 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 2958 MAILBOX_t *mb = &pmb->u.mb; 2959 2960 switch (mb->mbxStatus) { 2961 case 0x0011: 2962 case 0x9601: 2963 case 0x9602: 2964 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE, 2965 "0912 cmpl_reg_vpi, mb status = 0x%x\n", 2966 mb->mbxStatus); 2967 lpfc_vport_set_state(vport, FC_VPORT_FAILED); 2968 spin_lock_irq(shost->host_lock); 2969 vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP); 2970 spin_unlock_irq(shost->host_lock); 2971 vport->fc_myDID = 0; 2972 goto out; 2973 } 2974 2975 spin_lock_irq(shost->host_lock); 2976 vport->vpi_state |= LPFC_VPI_REGISTERED; 2977 vport->fc_flag &= ~FC_VPORT_NEEDS_REG_VPI; 2978 spin_unlock_irq(shost->host_lock); 2979 vport->num_disc_nodes = 0; 2980 /* go thru NPR list and issue ELS PLOGIs */ 2981 if (vport->fc_npr_cnt) 2982 lpfc_els_disc_plogi(vport); 2983 2984 if (!vport->num_disc_nodes) { 2985 spin_lock_irq(shost->host_lock); 2986 vport->fc_flag &= ~FC_NDISC_ACTIVE; 2987 spin_unlock_irq(shost->host_lock); 2988 lpfc_can_disctmo(vport); 2989 } 2990 vport->port_state = LPFC_VPORT_READY; 2991 2992out: 2993 mempool_free(pmb, phba->mbox_mem_pool); 2994 return; 2995} 2996 2997/** 2998 * lpfc_create_static_vport - Read HBA config region to create static vports. 2999 * @phba: pointer to lpfc hba data structure. 3000 * 3001 * This routine issue a DUMP mailbox command for config region 22 to get 3002 * the list of static vports to be created. The function create vports 3003 * based on the information returned from the HBA. 3004 **/ 3005void 3006lpfc_create_static_vport(struct lpfc_hba *phba) 3007{ 3008 LPFC_MBOXQ_t *pmb = NULL; 3009 MAILBOX_t *mb; 3010 struct static_vport_info *vport_info; 3011 int rc = 0, i; 3012 struct fc_vport_identifiers vport_id; 3013 struct fc_vport *new_fc_vport; 3014 struct Scsi_Host *shost; 3015 struct lpfc_vport *vport; 3016 uint16_t offset = 0; 3017 uint8_t *vport_buff; 3018 struct lpfc_dmabuf *mp; 3019 uint32_t byte_count = 0; 3020 3021 pmb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 3022 if (!pmb) { 3023 lpfc_printf_log(phba, KERN_ERR, LOG_INIT, 3024 "0542 lpfc_create_static_vport failed to" 3025 " allocate mailbox memory\n"); 3026 return; 3027 } 3028 3029 mb = &pmb->u.mb; 3030 3031 vport_info = kzalloc(sizeof(struct static_vport_info), GFP_KERNEL); 3032 if (!vport_info) { 3033 lpfc_printf_log(phba, KERN_ERR, LOG_INIT, 3034 "0543 lpfc_create_static_vport failed to" 3035 " allocate vport_info\n"); 3036 mempool_free(pmb, phba->mbox_mem_pool); 3037 return; 3038 } 3039 3040 vport_buff = (uint8_t *) vport_info; 3041 do { 3042 if (lpfc_dump_static_vport(phba, pmb, offset)) 3043 goto out; 3044 3045 pmb->vport = phba->pport; 3046 rc = lpfc_sli_issue_mbox_wait(phba, pmb, LPFC_MBOX_TMO); 3047 3048 if ((rc != MBX_SUCCESS) || mb->mbxStatus) { 3049 lpfc_printf_log(phba, KERN_WARNING, LOG_INIT, 3050 "0544 lpfc_create_static_vport failed to" 3051 " issue dump mailbox command ret 0x%x " 3052 "status 0x%x\n", 3053 rc, mb->mbxStatus); 3054 goto out; 3055 } 3056 3057 if (phba->sli_rev == LPFC_SLI_REV4) { 3058 byte_count = pmb->u.mqe.un.mb_words[5]; 3059 mp = (struct lpfc_dmabuf *) pmb->context2; 3060 if (byte_count > sizeof(struct static_vport_info) - 3061 offset) 3062 byte_count = sizeof(struct static_vport_info) 3063 - offset; 3064 memcpy(vport_buff + offset, mp->virt, byte_count); 3065 offset += byte_count; 3066 } else { 3067 if (mb->un.varDmp.word_cnt > 3068 sizeof(struct static_vport_info) - offset) 3069 mb->un.varDmp.word_cnt = 3070 sizeof(struct static_vport_info) 3071 - offset; 3072 byte_count = mb->un.varDmp.word_cnt; 3073 lpfc_sli_pcimem_bcopy(((uint8_t *)mb) + DMP_RSP_OFFSET, 3074 vport_buff + offset, 3075 byte_count); 3076 3077 offset += byte_count; 3078 } 3079 3080 } while (byte_count && 3081 offset < sizeof(struct static_vport_info)); 3082 3083 3084 if ((le32_to_cpu(vport_info->signature) != VPORT_INFO_SIG) || 3085 ((le32_to_cpu(vport_info->rev) & VPORT_INFO_REV_MASK) 3086 != VPORT_INFO_REV)) { 3087 lpfc_printf_log(phba, KERN_ERR, LOG_INIT, 3088 "0545 lpfc_create_static_vport bad" 3089 " information header 0x%x 0x%x\n", 3090 le32_to_cpu(vport_info->signature), 3091 le32_to_cpu(vport_info->rev) & VPORT_INFO_REV_MASK); 3092 3093 goto out; 3094 } 3095 3096 shost = lpfc_shost_from_vport(phba->pport); 3097 3098 for (i = 0; i < MAX_STATIC_VPORT_COUNT; i++) { 3099 memset(&vport_id, 0, sizeof(vport_id)); 3100 vport_id.port_name = wwn_to_u64(vport_info->vport_list[i].wwpn); 3101 vport_id.node_name = wwn_to_u64(vport_info->vport_list[i].wwnn); 3102 if (!vport_id.port_name || !vport_id.node_name) 3103 continue; 3104 3105 vport_id.roles = FC_PORT_ROLE_FCP_INITIATOR; 3106 vport_id.vport_type = FC_PORTTYPE_NPIV; 3107 vport_id.disable = false; 3108 new_fc_vport = fc_vport_create(shost, 0, &vport_id); 3109 3110 if (!new_fc_vport) { 3111 lpfc_printf_log(phba, KERN_WARNING, LOG_INIT, 3112 "0546 lpfc_create_static_vport failed to" 3113 " create vport\n"); 3114 continue; 3115 } 3116 3117 vport = *(struct lpfc_vport **)new_fc_vport->dd_data; 3118 vport->vport_flag |= STATIC_VPORT; 3119 } 3120 3121out: 3122 kfree(vport_info); 3123 if (rc != MBX_TIMEOUT) { 3124 if (pmb->context2) { 3125 mp = (struct lpfc_dmabuf *) pmb->context2; 3126 lpfc_mbuf_free(phba, mp->virt, mp->phys); 3127 kfree(mp); 3128 } 3129 mempool_free(pmb, phba->mbox_mem_pool); 3130 } 3131 3132 return; 3133} 3134 3135/* 3136 * This routine handles processing a Fabric REG_LOGIN mailbox 3137 * command upon completion. It is setup in the LPFC_MBOXQ 3138 * as the completion routine when the command is 3139 * handed off to the SLI layer. 3140 */ 3141void 3142lpfc_mbx_cmpl_fabric_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 3143{ 3144 struct lpfc_vport *vport = pmb->vport; 3145 MAILBOX_t *mb = &pmb->u.mb; 3146 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1); 3147 struct lpfc_nodelist *ndlp; 3148 3149 ndlp = (struct lpfc_nodelist *) pmb->context2; 3150 pmb->context1 = NULL; 3151 pmb->context2 = NULL; 3152 if (mb->mbxStatus) { 3153 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX, 3154 "0258 Register Fabric login error: 0x%x\n", 3155 mb->mbxStatus); 3156 lpfc_mbuf_free(phba, mp->virt, mp->phys); 3157 kfree(mp); 3158 mempool_free(pmb, phba->mbox_mem_pool); 3159 3160 if (phba->fc_topology == TOPOLOGY_LOOP) { 3161 /* FLOGI failed, use loop map to make discovery list */ 3162 lpfc_disc_list_loopmap(vport); 3163 3164 /* Start discovery */ 3165 lpfc_disc_start(vport); 3166 /* Decrement the reference count to ndlp after the 3167 * reference to the ndlp are done. 3168 */ 3169 lpfc_nlp_put(ndlp); 3170 return; 3171 } 3172 3173 lpfc_vport_set_state(vport, FC_VPORT_FAILED); 3174 /* Decrement the reference count to ndlp after the reference 3175 * to the ndlp are done. 3176 */ 3177 lpfc_nlp_put(ndlp); 3178 return; 3179 } 3180 3181 ndlp->nlp_rpi = mb->un.varWords[0]; 3182 ndlp->nlp_flag |= NLP_RPI_VALID; 3183 ndlp->nlp_type |= NLP_FABRIC; 3184 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE); 3185 3186 if (vport->port_state == LPFC_FABRIC_CFG_LINK) { 3187 /* when physical port receive logo donot start 3188 * vport discovery */ 3189 if (!(vport->fc_flag & FC_LOGO_RCVD_DID_CHNG)) 3190 lpfc_start_fdiscs(phba); 3191 else 3192 vport->fc_flag &= ~FC_LOGO_RCVD_DID_CHNG ; 3193 lpfc_do_scr_ns_plogi(phba, vport); 3194 } 3195 3196 lpfc_mbuf_free(phba, mp->virt, mp->phys); 3197 kfree(mp); 3198 mempool_free(pmb, phba->mbox_mem_pool); 3199 3200 /* Drop the reference count from the mbox at the end after 3201 * all the current reference to the ndlp have been done. 3202 */ 3203 lpfc_nlp_put(ndlp); 3204 return; 3205} 3206 3207/* 3208 * This routine handles processing a NameServer REG_LOGIN mailbox 3209 * command upon completion. It is setup in the LPFC_MBOXQ 3210 * as the completion routine when the command is 3211 * handed off to the SLI layer. 3212 */ 3213void 3214lpfc_mbx_cmpl_ns_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 3215{ 3216 MAILBOX_t *mb = &pmb->u.mb; 3217 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1); 3218 struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) pmb->context2; 3219 struct lpfc_vport *vport = pmb->vport; 3220 3221 if (mb->mbxStatus) { 3222out: 3223 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS, 3224 "0260 Register NameServer error: 0x%x\n", 3225 mb->mbxStatus); 3226 /* decrement the node reference count held for this 3227 * callback function. 3228 */ 3229 lpfc_nlp_put(ndlp); 3230 lpfc_mbuf_free(phba, mp->virt, mp->phys); 3231 kfree(mp); 3232 mempool_free(pmb, phba->mbox_mem_pool); 3233 3234 /* If no other thread is using the ndlp, free it */ 3235 lpfc_nlp_not_used(ndlp); 3236 3237 if (phba->fc_topology == TOPOLOGY_LOOP) { 3238 /* 3239 * RegLogin failed, use loop map to make discovery 3240 * list 3241 */ 3242 lpfc_disc_list_loopmap(vport); 3243 3244 /* Start discovery */ 3245 lpfc_disc_start(vport); 3246 return; 3247 } 3248 lpfc_vport_set_state(vport, FC_VPORT_FAILED); 3249 return; 3250 } 3251 3252 pmb->context1 = NULL; 3253 3254 ndlp->nlp_rpi = mb->un.varWords[0]; 3255 ndlp->nlp_flag |= NLP_RPI_VALID; 3256 ndlp->nlp_type |= NLP_FABRIC; 3257 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE); 3258 3259 if (vport->port_state < LPFC_VPORT_READY) { 3260 /* Link up discovery requires Fabric registration. */ 3261 lpfc_ns_cmd(vport, SLI_CTNS_RFF_ID, 0, 0); /* Do this first! */ 3262 lpfc_ns_cmd(vport, SLI_CTNS_RNN_ID, 0, 0); 3263 lpfc_ns_cmd(vport, SLI_CTNS_RSNN_NN, 0, 0); 3264 lpfc_ns_cmd(vport, SLI_CTNS_RSPN_ID, 0, 0); 3265 lpfc_ns_cmd(vport, SLI_CTNS_RFT_ID, 0, 0); 3266 3267 /* Issue SCR just before NameServer GID_FT Query */ 3268 lpfc_issue_els_scr(vport, SCR_DID, 0); 3269 } 3270 3271 vport->fc_ns_retry = 0; 3272 /* Good status, issue CT Request to NameServer */ 3273 if (lpfc_ns_cmd(vport, SLI_CTNS_GID_FT, 0, 0)) { 3274 /* Cannot issue NameServer Query, so finish up discovery */ 3275 goto out; 3276 } 3277 3278 /* decrement the node reference count held for this 3279 * callback function. 3280 */ 3281 lpfc_nlp_put(ndlp); 3282 lpfc_mbuf_free(phba, mp->virt, mp->phys); 3283 kfree(mp); 3284 mempool_free(pmb, phba->mbox_mem_pool); 3285 3286 return; 3287} 3288 3289static void 3290lpfc_register_remote_port(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) 3291{ 3292 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 3293 struct fc_rport *rport; 3294 struct lpfc_rport_data *rdata; 3295 struct fc_rport_identifiers rport_ids; 3296 struct lpfc_hba *phba = vport->phba; 3297 3298 /* Remote port has reappeared. Re-register w/ FC transport */ 3299 rport_ids.node_name = wwn_to_u64(ndlp->nlp_nodename.u.wwn); 3300 rport_ids.port_name = wwn_to_u64(ndlp->nlp_portname.u.wwn); 3301 rport_ids.port_id = ndlp->nlp_DID; 3302 rport_ids.roles = FC_RPORT_ROLE_UNKNOWN; 3303 3304 /* 3305 * We leave our node pointer in rport->dd_data when we unregister a 3306 * FCP target port. But fc_remote_port_add zeros the space to which 3307 * rport->dd_data points. So, if we're reusing a previously 3308 * registered port, drop the reference that we took the last time we 3309 * registered the port. 3310 */ 3311 if (ndlp->rport && ndlp->rport->dd_data && 3312 ((struct lpfc_rport_data *) ndlp->rport->dd_data)->pnode == ndlp) 3313 lpfc_nlp_put(ndlp); 3314 3315 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT, 3316 "rport add: did:x%x flg:x%x type x%x", 3317 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type); 3318 3319 ndlp->rport = rport = fc_remote_port_add(shost, 0, &rport_ids); 3320 if (!rport || !get_device(&rport->dev)) { 3321 dev_printk(KERN_WARNING, &phba->pcidev->dev, 3322 "Warning: fc_remote_port_add failed\n"); 3323 return; 3324 } 3325 3326 /* initialize static port data */ 3327 rport->maxframe_size = ndlp->nlp_maxframe; 3328 rport->supported_classes = ndlp->nlp_class_sup; 3329 rdata = rport->dd_data; 3330 rdata->pnode = lpfc_nlp_get(ndlp); 3331 3332 if (ndlp->nlp_type & NLP_FCP_TARGET) 3333 rport_ids.roles |= FC_RPORT_ROLE_FCP_TARGET; 3334 if (ndlp->nlp_type & NLP_FCP_INITIATOR) 3335 rport_ids.roles |= FC_RPORT_ROLE_FCP_INITIATOR; 3336 3337 3338 if (rport_ids.roles != FC_RPORT_ROLE_UNKNOWN) 3339 fc_remote_port_rolechg(rport, rport_ids.roles); 3340 3341 if ((rport->scsi_target_id != -1) && 3342 (rport->scsi_target_id < LPFC_MAX_TARGET)) { 3343 ndlp->nlp_sid = rport->scsi_target_id; 3344 } 3345 return; 3346} 3347 3348static void 3349lpfc_unregister_remote_port(struct lpfc_nodelist *ndlp) 3350{ 3351 struct fc_rport *rport = ndlp->rport; 3352 3353 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_RPORT, 3354 "rport delete: did:x%x flg:x%x type x%x", 3355 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type); 3356 3357 fc_remote_port_delete(rport); 3358 3359 return; 3360} 3361 3362static void 3363lpfc_nlp_counters(struct lpfc_vport *vport, int state, int count) 3364{ 3365 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 3366 3367 spin_lock_irq(shost->host_lock); 3368 switch (state) { 3369 case NLP_STE_UNUSED_NODE: 3370 vport->fc_unused_cnt += count; 3371 break; 3372 case NLP_STE_PLOGI_ISSUE: 3373 vport->fc_plogi_cnt += count; 3374 break; 3375 case NLP_STE_ADISC_ISSUE: 3376 vport->fc_adisc_cnt += count; 3377 break; 3378 case NLP_STE_REG_LOGIN_ISSUE: 3379 vport->fc_reglogin_cnt += count; 3380 break; 3381 case NLP_STE_PRLI_ISSUE: 3382 vport->fc_prli_cnt += count; 3383 break; 3384 case NLP_STE_UNMAPPED_NODE: 3385 vport->fc_unmap_cnt += count; 3386 break; 3387 case NLP_STE_MAPPED_NODE: 3388 vport->fc_map_cnt += count; 3389 break; 3390 case NLP_STE_NPR_NODE: 3391 vport->fc_npr_cnt += count; 3392 break; 3393 } 3394 spin_unlock_irq(shost->host_lock); 3395} 3396 3397static void 3398lpfc_nlp_state_cleanup(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 3399 int old_state, int new_state) 3400{ 3401 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 3402 3403 if (new_state == NLP_STE_UNMAPPED_NODE) { 3404 ndlp->nlp_flag &= ~NLP_NODEV_REMOVE; 3405 ndlp->nlp_type |= NLP_FC_NODE; 3406 } 3407 if (new_state == NLP_STE_MAPPED_NODE) 3408 ndlp->nlp_flag &= ~NLP_NODEV_REMOVE; 3409 if (new_state == NLP_STE_NPR_NODE) 3410 ndlp->nlp_flag &= ~NLP_RCV_PLOGI; 3411 3412 /* Transport interface */ 3413 if (ndlp->rport && (old_state == NLP_STE_MAPPED_NODE || 3414 old_state == NLP_STE_UNMAPPED_NODE)) { 3415 vport->phba->nport_event_cnt++; 3416 lpfc_unregister_remote_port(ndlp); 3417 } 3418 3419 if (new_state == NLP_STE_MAPPED_NODE || 3420 new_state == NLP_STE_UNMAPPED_NODE) { 3421 vport->phba->nport_event_cnt++; 3422 /* 3423 * Tell the fc transport about the port, if we haven't 3424 * already. If we have, and it's a scsi entity, be 3425 * sure to unblock any attached scsi devices 3426 */ 3427 lpfc_register_remote_port(vport, ndlp); 3428 } 3429 if ((new_state == NLP_STE_MAPPED_NODE) && 3430 (vport->stat_data_enabled)) { 3431 /* 3432 * A new target is discovered, if there is no buffer for 3433 * statistical data collection allocate buffer. 3434 */ 3435 ndlp->lat_data = kcalloc(LPFC_MAX_BUCKET_COUNT, 3436 sizeof(struct lpfc_scsicmd_bkt), 3437 GFP_KERNEL); 3438 3439 if (!ndlp->lat_data) 3440 lpfc_printf_vlog(vport, KERN_ERR, LOG_NODE, 3441 "0286 lpfc_nlp_state_cleanup failed to " 3442 "allocate statistical data buffer DID " 3443 "0x%x\n", ndlp->nlp_DID); 3444 } 3445 /* 3446 * if we added to Mapped list, but the remote port 3447 * registration failed or assigned a target id outside 3448 * our presentable range - move the node to the 3449 * Unmapped List 3450 */ 3451 if (new_state == NLP_STE_MAPPED_NODE && 3452 (!ndlp->rport || 3453 ndlp->rport->scsi_target_id == -1 || 3454 ndlp->rport->scsi_target_id >= LPFC_MAX_TARGET)) { 3455 spin_lock_irq(shost->host_lock); 3456 ndlp->nlp_flag |= NLP_TGT_NO_SCSIID; 3457 spin_unlock_irq(shost->host_lock); 3458 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE); 3459 } 3460} 3461 3462static char * 3463lpfc_nlp_state_name(char *buffer, size_t size, int state) 3464{ 3465 static char *states[] = { 3466 [NLP_STE_UNUSED_NODE] = "UNUSED", 3467 [NLP_STE_PLOGI_ISSUE] = "PLOGI", 3468 [NLP_STE_ADISC_ISSUE] = "ADISC", 3469 [NLP_STE_REG_LOGIN_ISSUE] = "REGLOGIN", 3470 [NLP_STE_PRLI_ISSUE] = "PRLI", 3471 [NLP_STE_UNMAPPED_NODE] = "UNMAPPED", 3472 [NLP_STE_MAPPED_NODE] = "MAPPED", 3473 [NLP_STE_NPR_NODE] = "NPR", 3474 }; 3475 3476 if (state < NLP_STE_MAX_STATE && states[state]) 3477 strlcpy(buffer, states[state], size); 3478 else 3479 snprintf(buffer, size, "unknown (%d)", state); 3480 return buffer; 3481} 3482 3483void 3484lpfc_nlp_set_state(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 3485 int state) 3486{ 3487 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 3488 int old_state = ndlp->nlp_state; 3489 char name1[16], name2[16]; 3490 3491 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE, 3492 "0904 NPort state transition x%06x, %s -> %s\n", 3493 ndlp->nlp_DID, 3494 lpfc_nlp_state_name(name1, sizeof(name1), old_state), 3495 lpfc_nlp_state_name(name2, sizeof(name2), state)); 3496 3497 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE, 3498 "node statechg did:x%x old:%d ste:%d", 3499 ndlp->nlp_DID, old_state, state); 3500 3501 if (old_state == NLP_STE_NPR_NODE && 3502 state != NLP_STE_NPR_NODE) 3503 lpfc_cancel_retry_delay_tmo(vport, ndlp); 3504 if (old_state == NLP_STE_UNMAPPED_NODE) { 3505 ndlp->nlp_flag &= ~NLP_TGT_NO_SCSIID; 3506 ndlp->nlp_type &= ~NLP_FC_NODE; 3507 } 3508 3509 if (list_empty(&ndlp->nlp_listp)) { 3510 spin_lock_irq(shost->host_lock); 3511 list_add_tail(&ndlp->nlp_listp, &vport->fc_nodes); 3512 spin_unlock_irq(shost->host_lock); 3513 } else if (old_state) 3514 lpfc_nlp_counters(vport, old_state, -1); 3515 3516 ndlp->nlp_state = state; 3517 lpfc_nlp_counters(vport, state, 1); 3518 lpfc_nlp_state_cleanup(vport, ndlp, old_state, state); 3519} 3520 3521void 3522lpfc_enqueue_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) 3523{ 3524 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 3525 3526 if (list_empty(&ndlp->nlp_listp)) { 3527 spin_lock_irq(shost->host_lock); 3528 list_add_tail(&ndlp->nlp_listp, &vport->fc_nodes); 3529 spin_unlock_irq(shost->host_lock); 3530 } 3531} 3532 3533void 3534lpfc_dequeue_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) 3535{ 3536 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 3537 3538 lpfc_cancel_retry_delay_tmo(vport, ndlp); 3539 if (ndlp->nlp_state && !list_empty(&ndlp->nlp_listp)) 3540 lpfc_nlp_counters(vport, ndlp->nlp_state, -1); 3541 spin_lock_irq(shost->host_lock); 3542 list_del_init(&ndlp->nlp_listp); 3543 spin_unlock_irq(shost->host_lock); 3544 lpfc_nlp_state_cleanup(vport, ndlp, ndlp->nlp_state, 3545 NLP_STE_UNUSED_NODE); 3546} 3547 3548static void 3549lpfc_disable_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) 3550{ 3551 lpfc_cancel_retry_delay_tmo(vport, ndlp); 3552 if (ndlp->nlp_state && !list_empty(&ndlp->nlp_listp)) 3553 lpfc_nlp_counters(vport, ndlp->nlp_state, -1); 3554 lpfc_nlp_state_cleanup(vport, ndlp, ndlp->nlp_state, 3555 NLP_STE_UNUSED_NODE); 3556} 3557/** 3558 * lpfc_initialize_node - Initialize all fields of node object 3559 * @vport: Pointer to Virtual Port object. 3560 * @ndlp: Pointer to FC node object. 3561 * @did: FC_ID of the node. 3562 * 3563 * This function is always called when node object need to be initialized. 3564 * It initializes all the fields of the node object. Although the reference 3565 * to phba from @ndlp can be obtained indirectly through it's reference to 3566 * @vport, a direct reference to phba is taken here by @ndlp. This is due 3567 * to the life-span of the @ndlp might go beyond the existence of @vport as 3568 * the final release of ndlp is determined by its reference count. And, the 3569 * operation on @ndlp needs the reference to phba. 3570 **/ 3571static inline void 3572lpfc_initialize_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 3573 uint32_t did) 3574{ 3575 INIT_LIST_HEAD(&ndlp->els_retry_evt.evt_listp); 3576 INIT_LIST_HEAD(&ndlp->dev_loss_evt.evt_listp); 3577 init_timer(&ndlp->nlp_delayfunc); 3578 ndlp->nlp_delayfunc.function = lpfc_els_retry_delay; 3579 ndlp->nlp_delayfunc.data = (unsigned long)ndlp; 3580 ndlp->nlp_DID = did; 3581 ndlp->vport = vport; 3582 ndlp->phba = vport->phba; 3583 ndlp->nlp_sid = NLP_NO_SID; 3584 kref_init(&ndlp->kref); 3585 NLP_INT_NODE_ACT(ndlp); 3586 atomic_set(&ndlp->cmd_pending, 0); 3587 ndlp->cmd_qdepth = vport->cfg_tgt_queue_depth; 3588} 3589 3590struct lpfc_nodelist * 3591lpfc_enable_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 3592 int state) 3593{ 3594 struct lpfc_hba *phba = vport->phba; 3595 uint32_t did; 3596 unsigned long flags; 3597 3598 if (!ndlp) 3599 return NULL; 3600 3601 spin_lock_irqsave(&phba->ndlp_lock, flags); 3602 /* The ndlp should not be in memory free mode */ 3603 if (NLP_CHK_FREE_REQ(ndlp)) { 3604 spin_unlock_irqrestore(&phba->ndlp_lock, flags); 3605 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NODE, 3606 "0277 lpfc_enable_node: ndlp:x%p " 3607 "usgmap:x%x refcnt:%d\n", 3608 (void *)ndlp, ndlp->nlp_usg_map, 3609 atomic_read(&ndlp->kref.refcount)); 3610 return NULL; 3611 } 3612 /* The ndlp should not already be in active mode */ 3613 if (NLP_CHK_NODE_ACT(ndlp)) { 3614 spin_unlock_irqrestore(&phba->ndlp_lock, flags); 3615 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NODE, 3616 "0278 lpfc_enable_node: ndlp:x%p " 3617 "usgmap:x%x refcnt:%d\n", 3618 (void *)ndlp, ndlp->nlp_usg_map, 3619 atomic_read(&ndlp->kref.refcount)); 3620 return NULL; 3621 } 3622 3623 /* Keep the original DID */ 3624 did = ndlp->nlp_DID; 3625 3626 /* re-initialize ndlp except of ndlp linked list pointer */ 3627 memset((((char *)ndlp) + sizeof (struct list_head)), 0, 3628 sizeof (struct lpfc_nodelist) - sizeof (struct list_head)); 3629 lpfc_initialize_node(vport, ndlp, did); 3630 3631 spin_unlock_irqrestore(&phba->ndlp_lock, flags); 3632 3633 if (state != NLP_STE_UNUSED_NODE) 3634 lpfc_nlp_set_state(vport, ndlp, state); 3635 3636 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE, 3637 "node enable: did:x%x", 3638 ndlp->nlp_DID, 0, 0); 3639 return ndlp; 3640} 3641 3642void 3643lpfc_drop_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) 3644{ 3645 /* 3646 * Use of lpfc_drop_node and UNUSED list: lpfc_drop_node should 3647 * be used if we wish to issue the "last" lpfc_nlp_put() to remove 3648 * the ndlp from the vport. The ndlp marked as UNUSED on the list 3649 * until ALL other outstanding threads have completed. We check 3650 * that the ndlp not already in the UNUSED state before we proceed. 3651 */ 3652 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE) 3653 return; 3654 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNUSED_NODE); 3655 lpfc_nlp_put(ndlp); 3656 return; 3657} 3658 3659/* 3660 * Start / ReStart rescue timer for Discovery / RSCN handling 3661 */ 3662void 3663lpfc_set_disctmo(struct lpfc_vport *vport) 3664{ 3665 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 3666 struct lpfc_hba *phba = vport->phba; 3667 uint32_t tmo; 3668 3669 if (vport->port_state == LPFC_LOCAL_CFG_LINK) { 3670 /* For FAN, timeout should be greater than edtov */ 3671 tmo = (((phba->fc_edtov + 999) / 1000) + 1); 3672 } else { 3673 /* Normal discovery timeout should be > than ELS/CT timeout 3674 * FC spec states we need 3 * ratov for CT requests 3675 */ 3676 tmo = ((phba->fc_ratov * 3) + 3); 3677 } 3678 3679 3680 if (!timer_pending(&vport->fc_disctmo)) { 3681 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, 3682 "set disc timer: tmo:x%x state:x%x flg:x%x", 3683 tmo, vport->port_state, vport->fc_flag); 3684 } 3685 3686 mod_timer(&vport->fc_disctmo, jiffies + HZ * tmo); 3687 spin_lock_irq(shost->host_lock); 3688 vport->fc_flag |= FC_DISC_TMO; 3689 spin_unlock_irq(shost->host_lock); 3690 3691 /* Start Discovery Timer state <hba_state> */ 3692 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, 3693 "0247 Start Discovery Timer state x%x " 3694 "Data: x%x x%lx x%x x%x\n", 3695 vport->port_state, tmo, 3696 (unsigned long)&vport->fc_disctmo, vport->fc_plogi_cnt, 3697 vport->fc_adisc_cnt); 3698 3699 return; 3700} 3701 3702/* 3703 * Cancel rescue timer for Discovery / RSCN handling 3704 */ 3705int 3706lpfc_can_disctmo(struct lpfc_vport *vport) 3707{ 3708 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 3709 unsigned long iflags; 3710 3711 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, 3712 "can disc timer: state:x%x rtry:x%x flg:x%x", 3713 vport->port_state, vport->fc_ns_retry, vport->fc_flag); 3714 3715 /* Turn off discovery timer if its running */ 3716 if (vport->fc_flag & FC_DISC_TMO) { 3717 spin_lock_irqsave(shost->host_lock, iflags); 3718 vport->fc_flag &= ~FC_DISC_TMO; 3719 spin_unlock_irqrestore(shost->host_lock, iflags); 3720 del_timer_sync(&vport->fc_disctmo); 3721 spin_lock_irqsave(&vport->work_port_lock, iflags); 3722 vport->work_port_events &= ~WORKER_DISC_TMO; 3723 spin_unlock_irqrestore(&vport->work_port_lock, iflags); 3724 } 3725 3726 /* Cancel Discovery Timer state <hba_state> */ 3727 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, 3728 "0248 Cancel Discovery Timer state x%x " 3729 "Data: x%x x%x x%x\n", 3730 vport->port_state, vport->fc_flag, 3731 vport->fc_plogi_cnt, vport->fc_adisc_cnt); 3732 return 0; 3733} 3734 3735/* 3736 * Check specified ring for outstanding IOCB on the SLI queue 3737 * Return true if iocb matches the specified nport 3738 */ 3739int 3740lpfc_check_sli_ndlp(struct lpfc_hba *phba, 3741 struct lpfc_sli_ring *pring, 3742 struct lpfc_iocbq *iocb, 3743 struct lpfc_nodelist *ndlp) 3744{ 3745 struct lpfc_sli *psli = &phba->sli; 3746 IOCB_t *icmd = &iocb->iocb; 3747 struct lpfc_vport *vport = ndlp->vport; 3748 3749 if (iocb->vport != vport) 3750 return 0; 3751 3752 if (pring->ringno == LPFC_ELS_RING) { 3753 switch (icmd->ulpCommand) { 3754 case CMD_GEN_REQUEST64_CR: 3755 if (iocb->context_un.ndlp == ndlp) 3756 return 1; 3757 case CMD_ELS_REQUEST64_CR: 3758 if (icmd->un.elsreq64.remoteID == ndlp->nlp_DID) 3759 return 1; 3760 case CMD_XMIT_ELS_RSP64_CX: 3761 if (iocb->context1 == (uint8_t *) ndlp) 3762 return 1; 3763 } 3764 } else if (pring->ringno == psli->extra_ring) { 3765 3766 } else if (pring->ringno == psli->fcp_ring) { 3767 /* Skip match check if waiting to relogin to FCP target */ 3768 if ((ndlp->nlp_type & NLP_FCP_TARGET) && 3769 (ndlp->nlp_flag & NLP_DELAY_TMO)) { 3770 return 0; 3771 } 3772 if (icmd->ulpContext == (volatile ushort)ndlp->nlp_rpi) { 3773 return 1; 3774 } 3775 } else if (pring->ringno == psli->next_ring) { 3776 3777 } 3778 return 0; 3779} 3780 3781/* 3782 * Free resources / clean up outstanding I/Os 3783 * associated with nlp_rpi in the LPFC_NODELIST entry. 3784 */ 3785static int 3786lpfc_no_rpi(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp) 3787{ 3788 LIST_HEAD(completions); 3789 struct lpfc_sli *psli; 3790 struct lpfc_sli_ring *pring; 3791 struct lpfc_iocbq *iocb, *next_iocb; 3792 uint32_t i; 3793 3794 lpfc_fabric_abort_nport(ndlp); 3795 3796 /* 3797 * Everything that matches on txcmplq will be returned 3798 * by firmware with a no rpi error. 3799 */ 3800 psli = &phba->sli; 3801 if (ndlp->nlp_flag & NLP_RPI_VALID) { 3802 /* Now process each ring */ 3803 for (i = 0; i < psli->num_rings; i++) { 3804 pring = &psli->ring[i]; 3805 3806 spin_lock_irq(&phba->hbalock); 3807 list_for_each_entry_safe(iocb, next_iocb, &pring->txq, 3808 list) { 3809 /* 3810 * Check to see if iocb matches the nport we are 3811 * looking for 3812 */ 3813 if ((lpfc_check_sli_ndlp(phba, pring, iocb, 3814 ndlp))) { 3815 /* It matches, so deque and call compl 3816 with an error */ 3817 list_move_tail(&iocb->list, 3818 &completions); 3819 pring->txq_cnt--; 3820 } 3821 } 3822 spin_unlock_irq(&phba->hbalock); 3823 } 3824 } 3825 3826 /* Cancel all the IOCBs from the completions list */ 3827 lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT, 3828 IOERR_SLI_ABORTED); 3829 3830 return 0; 3831} 3832 3833/* 3834 * Free rpi associated with LPFC_NODELIST entry. 3835 * This routine is called from lpfc_freenode(), when we are removing 3836 * a LPFC_NODELIST entry. It is also called if the driver initiates a 3837 * LOGO that completes successfully, and we are waiting to PLOGI back 3838 * to the remote NPort. In addition, it is called after we receive 3839 * and unsolicated ELS cmd, send back a rsp, the rsp completes and 3840 * we are waiting to PLOGI back to the remote NPort. 3841 */ 3842int 3843lpfc_unreg_rpi(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) 3844{ 3845 struct lpfc_hba *phba = vport->phba; 3846 LPFC_MBOXQ_t *mbox; 3847 int rc; 3848 3849 if (ndlp->nlp_flag & NLP_RPI_VALID) { 3850 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 3851 if (mbox) { 3852 lpfc_unreg_login(phba, vport->vpi, ndlp->nlp_rpi, mbox); 3853 mbox->vport = vport; 3854 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl; 3855 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT); 3856 if (rc == MBX_NOT_FINISHED) 3857 mempool_free(mbox, phba->mbox_mem_pool); 3858 } 3859 lpfc_no_rpi(phba, ndlp); 3860 3861 ndlp->nlp_rpi = 0; 3862 ndlp->nlp_flag &= ~NLP_RPI_VALID; 3863 ndlp->nlp_flag &= ~NLP_NPR_ADISC; 3864 return 1; 3865 } 3866 return 0; 3867} 3868 3869/** 3870 * lpfc_unreg_hba_rpis - Unregister rpis registered to the hba. 3871 * @phba: pointer to lpfc hba data structure. 3872 * 3873 * This routine is invoked to unregister all the currently registered RPIs 3874 * to the HBA. 3875 **/ 3876void 3877lpfc_unreg_hba_rpis(struct lpfc_hba *phba) 3878{ 3879 struct lpfc_vport **vports; 3880 struct lpfc_nodelist *ndlp; 3881 struct Scsi_Host *shost; 3882 int i; 3883 3884 vports = lpfc_create_vport_work_array(phba); 3885 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) { 3886 shost = lpfc_shost_from_vport(vports[i]); 3887 spin_lock_irq(shost->host_lock); 3888 list_for_each_entry(ndlp, &vports[i]->fc_nodes, nlp_listp) { 3889 if (ndlp->nlp_flag & NLP_RPI_VALID) { 3890 /* The mempool_alloc might sleep */ 3891 spin_unlock_irq(shost->host_lock); 3892 lpfc_unreg_rpi(vports[i], ndlp); 3893 spin_lock_irq(shost->host_lock); 3894 } 3895 } 3896 spin_unlock_irq(shost->host_lock); 3897 } 3898 lpfc_destroy_vport_work_array(phba, vports); 3899} 3900 3901void 3902lpfc_unreg_all_rpis(struct lpfc_vport *vport) 3903{ 3904 struct lpfc_hba *phba = vport->phba; 3905 LPFC_MBOXQ_t *mbox; 3906 int rc; 3907 3908 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 3909 if (mbox) { 3910 lpfc_unreg_login(phba, vport->vpi, 0xffff, mbox); 3911 mbox->vport = vport; 3912 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl; 3913 mbox->context1 = NULL; 3914 rc = lpfc_sli_issue_mbox_wait(phba, mbox, LPFC_MBOX_TMO); 3915 if (rc != MBX_TIMEOUT) 3916 mempool_free(mbox, phba->mbox_mem_pool); 3917 3918 if ((rc == MBX_TIMEOUT) || (rc == MBX_NOT_FINISHED)) 3919 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX | LOG_VPORT, 3920 "1836 Could not issue " 3921 "unreg_login(all_rpis) status %d\n", rc); 3922 } 3923} 3924 3925void 3926lpfc_unreg_default_rpis(struct lpfc_vport *vport) 3927{ 3928 struct lpfc_hba *phba = vport->phba; 3929 LPFC_MBOXQ_t *mbox; 3930 int rc; 3931 3932 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 3933 if (mbox) { 3934 lpfc_unreg_did(phba, vport->vpi, 0xffffffff, mbox); 3935 mbox->vport = vport; 3936 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl; 3937 mbox->context1 = NULL; 3938 rc = lpfc_sli_issue_mbox_wait(phba, mbox, LPFC_MBOX_TMO); 3939 if (rc != MBX_TIMEOUT) 3940 mempool_free(mbox, phba->mbox_mem_pool); 3941 3942 if ((rc == MBX_TIMEOUT) || (rc == MBX_NOT_FINISHED)) 3943 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX | LOG_VPORT, 3944 "1815 Could not issue " 3945 "unreg_did (default rpis) status %d\n", 3946 rc); 3947 } 3948} 3949 3950/* 3951 * Free resources associated with LPFC_NODELIST entry 3952 * so it can be freed. 3953 */ 3954static int 3955lpfc_cleanup_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) 3956{ 3957 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 3958 struct lpfc_hba *phba = vport->phba; 3959 LPFC_MBOXQ_t *mb, *nextmb; 3960 struct lpfc_dmabuf *mp; 3961 3962 /* Cleanup node for NPort <nlp_DID> */ 3963 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE, 3964 "0900 Cleanup node for NPort x%x " 3965 "Data: x%x x%x x%x\n", 3966 ndlp->nlp_DID, ndlp->nlp_flag, 3967 ndlp->nlp_state, ndlp->nlp_rpi); 3968 if (NLP_CHK_FREE_REQ(ndlp)) { 3969 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NODE, 3970 "0280 lpfc_cleanup_node: ndlp:x%p " 3971 "usgmap:x%x refcnt:%d\n", 3972 (void *)ndlp, ndlp->nlp_usg_map, 3973 atomic_read(&ndlp->kref.refcount)); 3974 lpfc_dequeue_node(vport, ndlp); 3975 } else { 3976 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NODE, 3977 "0281 lpfc_cleanup_node: ndlp:x%p " 3978 "usgmap:x%x refcnt:%d\n", 3979 (void *)ndlp, ndlp->nlp_usg_map, 3980 atomic_read(&ndlp->kref.refcount)); 3981 lpfc_disable_node(vport, ndlp); 3982 } 3983 3984 /* cleanup any ndlp on mbox q waiting for reglogin cmpl */ 3985 if ((mb = phba->sli.mbox_active)) { 3986 if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) && 3987 (ndlp == (struct lpfc_nodelist *) mb->context2)) { 3988 mb->context2 = NULL; 3989 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl; 3990 } 3991 } 3992 3993 spin_lock_irq(&phba->hbalock); 3994 list_for_each_entry_safe(mb, nextmb, &phba->sli.mboxq, list) { 3995 if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) && 3996 (ndlp == (struct lpfc_nodelist *) mb->context2)) { 3997 mp = (struct lpfc_dmabuf *) (mb->context1); 3998 if (mp) { 3999 __lpfc_mbuf_free(phba, mp->virt, mp->phys); 4000 kfree(mp); 4001 } 4002 list_del(&mb->list); 4003 if (phba->sli_rev == LPFC_SLI_REV4) 4004 lpfc_sli4_free_rpi(phba, 4005 mb->u.mb.un.varRegLogin.rpi); 4006 mempool_free(mb, phba->mbox_mem_pool); 4007 /* We shall not invoke the lpfc_nlp_put to decrement 4008 * the ndlp reference count as we are in the process 4009 * of lpfc_nlp_release. 4010 */ 4011 } 4012 } 4013 spin_unlock_irq(&phba->hbalock); 4014 4015 lpfc_els_abort(phba, ndlp); 4016 4017 spin_lock_irq(shost->host_lock); 4018 ndlp->nlp_flag &= ~NLP_DELAY_TMO; 4019 spin_unlock_irq(shost->host_lock); 4020 4021 ndlp->nlp_last_elscmd = 0; 4022 del_timer_sync(&ndlp->nlp_delayfunc); 4023 4024 list_del_init(&ndlp->els_retry_evt.evt_listp); 4025 list_del_init(&ndlp->dev_loss_evt.evt_listp); 4026 4027 lpfc_unreg_rpi(vport, ndlp); 4028 4029 return 0; 4030} 4031 4032/* 4033 * Check to see if we can free the nlp back to the freelist. 4034 * If we are in the middle of using the nlp in the discovery state 4035 * machine, defer the free till we reach the end of the state machine. 4036 */ 4037static void 4038lpfc_nlp_remove(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) 4039{ 4040 struct lpfc_hba *phba = vport->phba; 4041 struct lpfc_rport_data *rdata; 4042 LPFC_MBOXQ_t *mbox; 4043 int rc; 4044 4045 lpfc_cancel_retry_delay_tmo(vport, ndlp); 4046 if ((ndlp->nlp_flag & NLP_DEFER_RM) && 4047 !(ndlp->nlp_flag & NLP_REG_LOGIN_SEND) && 4048 !(ndlp->nlp_flag & NLP_RPI_VALID)) { 4049 /* For this case we need to cleanup the default rpi 4050 * allocated by the firmware. 4051 */ 4052 if ((mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL)) 4053 != NULL) { 4054 rc = lpfc_reg_rpi(phba, vport->vpi, ndlp->nlp_DID, 4055 (uint8_t *) &vport->fc_sparam, mbox, 0); 4056 if (rc) { 4057 mempool_free(mbox, phba->mbox_mem_pool); 4058 } 4059 else { 4060 mbox->mbox_flag |= LPFC_MBX_IMED_UNREG; 4061 mbox->mbox_cmpl = lpfc_mbx_cmpl_dflt_rpi; 4062 mbox->vport = vport; 4063 mbox->context2 = NULL; 4064 rc =lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT); 4065 if (rc == MBX_NOT_FINISHED) { 4066 mempool_free(mbox, phba->mbox_mem_pool); 4067 } 4068 } 4069 } 4070 } 4071 lpfc_cleanup_node(vport, ndlp); 4072 4073 /* 4074 * We can get here with a non-NULL ndlp->rport because when we 4075 * unregister a rport we don't break the rport/node linkage. So if we 4076 * do, make sure we don't leaving any dangling pointers behind. 4077 */ 4078 if (ndlp->rport) { 4079 rdata = ndlp->rport->dd_data; 4080 rdata->pnode = NULL; 4081 ndlp->rport = NULL; 4082 } 4083} 4084 4085static int 4086lpfc_matchdid(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 4087 uint32_t did) 4088{ 4089 D_ID mydid, ndlpdid, matchdid; 4090 4091 if (did == Bcast_DID) 4092 return 0; 4093 4094 /* First check for Direct match */ 4095 if (ndlp->nlp_DID == did) 4096 return 1; 4097 4098 /* Next check for area/domain identically equals 0 match */ 4099 mydid.un.word = vport->fc_myDID; 4100 if ((mydid.un.b.domain == 0) && (mydid.un.b.area == 0)) { 4101 return 0; 4102 } 4103 4104 matchdid.un.word = did; 4105 ndlpdid.un.word = ndlp->nlp_DID; 4106 if (matchdid.un.b.id == ndlpdid.un.b.id) { 4107 if ((mydid.un.b.domain == matchdid.un.b.domain) && 4108 (mydid.un.b.area == matchdid.un.b.area)) { 4109 if ((ndlpdid.un.b.domain == 0) && 4110 (ndlpdid.un.b.area == 0)) { 4111 if (ndlpdid.un.b.id) 4112 return 1; 4113 } 4114 return 0; 4115 } 4116 4117 matchdid.un.word = ndlp->nlp_DID; 4118 if ((mydid.un.b.domain == ndlpdid.un.b.domain) && 4119 (mydid.un.b.area == ndlpdid.un.b.area)) { 4120 if ((matchdid.un.b.domain == 0) && 4121 (matchdid.un.b.area == 0)) { 4122 if (matchdid.un.b.id) 4123 return 1; 4124 } 4125 } 4126 } 4127 return 0; 4128} 4129 4130/* Search for a nodelist entry */ 4131static struct lpfc_nodelist * 4132__lpfc_findnode_did(struct lpfc_vport *vport, uint32_t did) 4133{ 4134 struct lpfc_nodelist *ndlp; 4135 uint32_t data1; 4136 4137 list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) { 4138 if (lpfc_matchdid(vport, ndlp, did)) { 4139 data1 = (((uint32_t) ndlp->nlp_state << 24) | 4140 ((uint32_t) ndlp->nlp_xri << 16) | 4141 ((uint32_t) ndlp->nlp_type << 8) | 4142 ((uint32_t) ndlp->nlp_rpi & 0xff)); 4143 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE, 4144 "0929 FIND node DID " 4145 "Data: x%p x%x x%x x%x\n", 4146 ndlp, ndlp->nlp_DID, 4147 ndlp->nlp_flag, data1); 4148 return ndlp; 4149 } 4150 } 4151 4152 /* FIND node did <did> NOT FOUND */ 4153 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE, 4154 "0932 FIND node did x%x NOT FOUND.\n", did); 4155 return NULL; 4156} 4157 4158struct lpfc_nodelist * 4159lpfc_findnode_did(struct lpfc_vport *vport, uint32_t did) 4160{ 4161 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 4162 struct lpfc_nodelist *ndlp; 4163 4164 spin_lock_irq(shost->host_lock); 4165 ndlp = __lpfc_findnode_did(vport, did); 4166 spin_unlock_irq(shost->host_lock); 4167 return ndlp; 4168} 4169 4170struct lpfc_nodelist * 4171lpfc_setup_disc_node(struct lpfc_vport *vport, uint32_t did) 4172{ 4173 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 4174 struct lpfc_nodelist *ndlp; 4175 4176 ndlp = lpfc_findnode_did(vport, did); 4177 if (!ndlp) { 4178 if ((vport->fc_flag & FC_RSCN_MODE) != 0 && 4179 lpfc_rscn_payload_check(vport, did) == 0) 4180 return NULL; 4181 ndlp = (struct lpfc_nodelist *) 4182 mempool_alloc(vport->phba->nlp_mem_pool, GFP_KERNEL); 4183 if (!ndlp) 4184 return NULL; 4185 lpfc_nlp_init(vport, ndlp, did); 4186 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE); 4187 spin_lock_irq(shost->host_lock); 4188 ndlp->nlp_flag |= NLP_NPR_2B_DISC; 4189 spin_unlock_irq(shost->host_lock); 4190 return ndlp; 4191 } else if (!NLP_CHK_NODE_ACT(ndlp)) { 4192 ndlp = lpfc_enable_node(vport, ndlp, NLP_STE_NPR_NODE); 4193 if (!ndlp) 4194 return NULL; 4195 spin_lock_irq(shost->host_lock); 4196 ndlp->nlp_flag |= NLP_NPR_2B_DISC; 4197 spin_unlock_irq(shost->host_lock); 4198 return ndlp; 4199 } 4200 4201 if ((vport->fc_flag & FC_RSCN_MODE) && 4202 !(vport->fc_flag & FC_NDISC_ACTIVE)) { 4203 if (lpfc_rscn_payload_check(vport, did)) { 4204 /* If we've already recieved a PLOGI from this NPort 4205 * we don't need to try to discover it again. 4206 */ 4207 if (ndlp->nlp_flag & NLP_RCV_PLOGI) 4208 return NULL; 4209 4210 /* Since this node is marked for discovery, 4211 * delay timeout is not needed. 4212 */ 4213 lpfc_cancel_retry_delay_tmo(vport, ndlp); 4214 spin_lock_irq(shost->host_lock); 4215 ndlp->nlp_flag |= NLP_NPR_2B_DISC; 4216 spin_unlock_irq(shost->host_lock); 4217 } else 4218 ndlp = NULL; 4219 } else { 4220 /* If we've already recieved a PLOGI from this NPort, 4221 * or we are already in the process of discovery on it, 4222 * we don't need to try to discover it again. 4223 */ 4224 if (ndlp->nlp_state == NLP_STE_ADISC_ISSUE || 4225 ndlp->nlp_state == NLP_STE_PLOGI_ISSUE || 4226 ndlp->nlp_flag & NLP_RCV_PLOGI) 4227 return NULL; 4228 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE); 4229 spin_lock_irq(shost->host_lock); 4230 ndlp->nlp_flag |= NLP_NPR_2B_DISC; 4231 spin_unlock_irq(shost->host_lock); 4232 } 4233 return ndlp; 4234} 4235 4236/* Build a list of nodes to discover based on the loopmap */ 4237void 4238lpfc_disc_list_loopmap(struct lpfc_vport *vport) 4239{ 4240 struct lpfc_hba *phba = vport->phba; 4241 int j; 4242 uint32_t alpa, index; 4243 4244 if (!lpfc_is_link_up(phba)) 4245 return; 4246 4247 if (phba->fc_topology != TOPOLOGY_LOOP) 4248 return; 4249 4250 /* Check for loop map present or not */ 4251 if (phba->alpa_map[0]) { 4252 for (j = 1; j <= phba->alpa_map[0]; j++) { 4253 alpa = phba->alpa_map[j]; 4254 if (((vport->fc_myDID & 0xff) == alpa) || (alpa == 0)) 4255 continue; 4256 lpfc_setup_disc_node(vport, alpa); 4257 } 4258 } else { 4259 /* No alpamap, so try all alpa's */ 4260 for (j = 0; j < FC_MAXLOOP; j++) { 4261 /* If cfg_scan_down is set, start from highest 4262 * ALPA (0xef) to lowest (0x1). 4263 */ 4264 if (vport->cfg_scan_down) 4265 index = j; 4266 else 4267 index = FC_MAXLOOP - j - 1; 4268 alpa = lpfcAlpaArray[index]; 4269 if ((vport->fc_myDID & 0xff) == alpa) 4270 continue; 4271 lpfc_setup_disc_node(vport, alpa); 4272 } 4273 } 4274 return; 4275} 4276 4277void 4278lpfc_issue_clear_la(struct lpfc_hba *phba, struct lpfc_vport *vport) 4279{ 4280 LPFC_MBOXQ_t *mbox; 4281 struct lpfc_sli *psli = &phba->sli; 4282 struct lpfc_sli_ring *extra_ring = &psli->ring[psli->extra_ring]; 4283 struct lpfc_sli_ring *fcp_ring = &psli->ring[psli->fcp_ring]; 4284 struct lpfc_sli_ring *next_ring = &psli->ring[psli->next_ring]; 4285 int rc; 4286 4287 /* 4288 * if it's not a physical port or if we already send 4289 * clear_la then don't send it. 4290 */ 4291 if ((phba->link_state >= LPFC_CLEAR_LA) || 4292 (vport->port_type != LPFC_PHYSICAL_PORT) || 4293 (phba->sli_rev == LPFC_SLI_REV4)) 4294 return; 4295 4296 /* Link up discovery */ 4297 if ((mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL)) != NULL) { 4298 phba->link_state = LPFC_CLEAR_LA; 4299 lpfc_clear_la(phba, mbox); 4300 mbox->mbox_cmpl = lpfc_mbx_cmpl_clear_la; 4301 mbox->vport = vport; 4302 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT); 4303 if (rc == MBX_NOT_FINISHED) { 4304 mempool_free(mbox, phba->mbox_mem_pool); 4305 lpfc_disc_flush_list(vport); 4306 extra_ring->flag &= ~LPFC_STOP_IOCB_EVENT; 4307 fcp_ring->flag &= ~LPFC_STOP_IOCB_EVENT; 4308 next_ring->flag &= ~LPFC_STOP_IOCB_EVENT; 4309 phba->link_state = LPFC_HBA_ERROR; 4310 } 4311 } 4312} 4313 4314/* Reg_vpi to tell firmware to resume normal operations */ 4315void 4316lpfc_issue_reg_vpi(struct lpfc_hba *phba, struct lpfc_vport *vport) 4317{ 4318 LPFC_MBOXQ_t *regvpimbox; 4319 4320 regvpimbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 4321 if (regvpimbox) { 4322 lpfc_reg_vpi(vport, regvpimbox); 4323 regvpimbox->mbox_cmpl = lpfc_mbx_cmpl_reg_vpi; 4324 regvpimbox->vport = vport; 4325 if (lpfc_sli_issue_mbox(phba, regvpimbox, MBX_NOWAIT) 4326 == MBX_NOT_FINISHED) { 4327 mempool_free(regvpimbox, phba->mbox_mem_pool); 4328 } 4329 } 4330} 4331 4332/* Start Link up / RSCN discovery on NPR nodes */ 4333void 4334lpfc_disc_start(struct lpfc_vport *vport) 4335{ 4336 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 4337 struct lpfc_hba *phba = vport->phba; 4338 uint32_t num_sent; 4339 uint32_t clear_la_pending; 4340 int did_changed; 4341 4342 if (!lpfc_is_link_up(phba)) 4343 return; 4344 4345 if (phba->link_state == LPFC_CLEAR_LA) 4346 clear_la_pending = 1; 4347 else 4348 clear_la_pending = 0; 4349 4350 if (vport->port_state < LPFC_VPORT_READY) 4351 vport->port_state = LPFC_DISC_AUTH; 4352 4353 lpfc_set_disctmo(vport); 4354 4355 if (vport->fc_prevDID == vport->fc_myDID) 4356 did_changed = 0; 4357 else 4358 did_changed = 1; 4359 4360 vport->fc_prevDID = vport->fc_myDID; 4361 vport->num_disc_nodes = 0; 4362 4363 /* Start Discovery state <hba_state> */ 4364 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, 4365 "0202 Start Discovery hba state x%x " 4366 "Data: x%x x%x x%x\n", 4367 vport->port_state, vport->fc_flag, vport->fc_plogi_cnt, 4368 vport->fc_adisc_cnt); 4369 4370 /* First do ADISCs - if any */ 4371 num_sent = lpfc_els_disc_adisc(vport); 4372 4373 if (num_sent) 4374 return; 4375 4376 /* 4377 * For SLI3, cmpl_reg_vpi will set port_state to READY, and 4378 * continue discovery. 4379 */ 4380 if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) && 4381 !(vport->fc_flag & FC_PT2PT) && 4382 !(vport->fc_flag & FC_RSCN_MODE) && 4383 (phba->sli_rev < LPFC_SLI_REV4)) { 4384 lpfc_issue_reg_vpi(phba, vport); 4385 return; 4386 } 4387 4388 /* 4389 * For SLI2, we need to set port_state to READY and continue 4390 * discovery. 4391 */ 4392 if (vport->port_state < LPFC_VPORT_READY && !clear_la_pending) { 4393 /* If we get here, there is nothing to ADISC */ 4394 if (vport->port_type == LPFC_PHYSICAL_PORT) 4395 lpfc_issue_clear_la(phba, vport); 4396 4397 if (!(vport->fc_flag & FC_ABORT_DISCOVERY)) { 4398 vport->num_disc_nodes = 0; 4399 /* go thru NPR nodes and issue ELS PLOGIs */ 4400 if (vport->fc_npr_cnt) 4401 lpfc_els_disc_plogi(vport); 4402 4403 if (!vport->num_disc_nodes) { 4404 spin_lock_irq(shost->host_lock); 4405 vport->fc_flag &= ~FC_NDISC_ACTIVE; 4406 spin_unlock_irq(shost->host_lock); 4407 lpfc_can_disctmo(vport); 4408 } 4409 } 4410 vport->port_state = LPFC_VPORT_READY; 4411 } else { 4412 /* Next do PLOGIs - if any */ 4413 num_sent = lpfc_els_disc_plogi(vport); 4414 4415 if (num_sent) 4416 return; 4417 4418 if (vport->fc_flag & FC_RSCN_MODE) { 4419 /* Check to see if more RSCNs came in while we 4420 * were processing this one. 4421 */ 4422 if ((vport->fc_rscn_id_cnt == 0) && 4423 (!(vport->fc_flag & FC_RSCN_DISCOVERY))) { 4424 spin_lock_irq(shost->host_lock); 4425 vport->fc_flag &= ~FC_RSCN_MODE; 4426 spin_unlock_irq(shost->host_lock); 4427 lpfc_can_disctmo(vport); 4428 } else 4429 lpfc_els_handle_rscn(vport); 4430 } 4431 } 4432 return; 4433} 4434 4435/* 4436 * Ignore completion for all IOCBs on tx and txcmpl queue for ELS 4437 * ring the match the sppecified nodelist. 4438 */ 4439static void 4440lpfc_free_tx(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp) 4441{ 4442 LIST_HEAD(completions); 4443 struct lpfc_sli *psli; 4444 IOCB_t *icmd; 4445 struct lpfc_iocbq *iocb, *next_iocb; 4446 struct lpfc_sli_ring *pring; 4447 4448 psli = &phba->sli; 4449 pring = &psli->ring[LPFC_ELS_RING]; 4450 4451 /* Error matching iocb on txq or txcmplq 4452 * First check the txq. 4453 */ 4454 spin_lock_irq(&phba->hbalock); 4455 list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) { 4456 if (iocb->context1 != ndlp) { 4457 continue; 4458 } 4459 icmd = &iocb->iocb; 4460 if ((icmd->ulpCommand == CMD_ELS_REQUEST64_CR) || 4461 (icmd->ulpCommand == CMD_XMIT_ELS_RSP64_CX)) { 4462 4463 list_move_tail(&iocb->list, &completions); 4464 pring->txq_cnt--; 4465 } 4466 } 4467 4468 /* Next check the txcmplq */ 4469 list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq, list) { 4470 if (iocb->context1 != ndlp) { 4471 continue; 4472 } 4473 icmd = &iocb->iocb; 4474 if (icmd->ulpCommand == CMD_ELS_REQUEST64_CR || 4475 icmd->ulpCommand == CMD_XMIT_ELS_RSP64_CX) { 4476 lpfc_sli_issue_abort_iotag(phba, pring, iocb); 4477 } 4478 } 4479 spin_unlock_irq(&phba->hbalock); 4480 4481 /* Cancel all the IOCBs from the completions list */ 4482 lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT, 4483 IOERR_SLI_ABORTED); 4484} 4485 4486static void 4487lpfc_disc_flush_list(struct lpfc_vport *vport) 4488{ 4489 struct lpfc_nodelist *ndlp, *next_ndlp; 4490 struct lpfc_hba *phba = vport->phba; 4491 4492 if (vport->fc_plogi_cnt || vport->fc_adisc_cnt) { 4493 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, 4494 nlp_listp) { 4495 if (!NLP_CHK_NODE_ACT(ndlp)) 4496 continue; 4497 if (ndlp->nlp_state == NLP_STE_PLOGI_ISSUE || 4498 ndlp->nlp_state == NLP_STE_ADISC_ISSUE) { 4499 lpfc_free_tx(phba, ndlp); 4500 } 4501 } 4502 } 4503} 4504 4505void 4506lpfc_cleanup_discovery_resources(struct lpfc_vport *vport) 4507{ 4508 lpfc_els_flush_rscn(vport); 4509 lpfc_els_flush_cmd(vport); 4510 lpfc_disc_flush_list(vport); 4511} 4512 4513/*****************************************************************************/ 4514/* 4515 * NAME: lpfc_disc_timeout 4516 * 4517 * FUNCTION: Fibre Channel driver discovery timeout routine. 4518 * 4519 * EXECUTION ENVIRONMENT: interrupt only 4520 * 4521 * CALLED FROM: 4522 * Timer function 4523 * 4524 * RETURNS: 4525 * none 4526 */ 4527/*****************************************************************************/ 4528void 4529lpfc_disc_timeout(unsigned long ptr) 4530{ 4531 struct lpfc_vport *vport = (struct lpfc_vport *) ptr; 4532 struct lpfc_hba *phba = vport->phba; 4533 uint32_t tmo_posted; 4534 unsigned long flags = 0; 4535 4536 if (unlikely(!phba)) 4537 return; 4538 4539 spin_lock_irqsave(&vport->work_port_lock, flags); 4540 tmo_posted = vport->work_port_events & WORKER_DISC_TMO; 4541 if (!tmo_posted) 4542 vport->work_port_events |= WORKER_DISC_TMO; 4543 spin_unlock_irqrestore(&vport->work_port_lock, flags); 4544 4545 if (!tmo_posted) 4546 lpfc_worker_wake_up(phba); 4547 return; 4548} 4549 4550static void 4551lpfc_disc_timeout_handler(struct lpfc_vport *vport) 4552{ 4553 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 4554 struct lpfc_hba *phba = vport->phba; 4555 struct lpfc_sli *psli = &phba->sli; 4556 struct lpfc_nodelist *ndlp, *next_ndlp; 4557 LPFC_MBOXQ_t *initlinkmbox; 4558 int rc, clrlaerr = 0; 4559 4560 if (!(vport->fc_flag & FC_DISC_TMO)) 4561 return; 4562 4563 spin_lock_irq(shost->host_lock); 4564 vport->fc_flag &= ~FC_DISC_TMO; 4565 spin_unlock_irq(shost->host_lock); 4566 4567 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, 4568 "disc timeout: state:x%x rtry:x%x flg:x%x", 4569 vport->port_state, vport->fc_ns_retry, vport->fc_flag); 4570 4571 switch (vport->port_state) { 4572 4573 case LPFC_LOCAL_CFG_LINK: 4574 /* port_state is identically LPFC_LOCAL_CFG_LINK while waiting for 4575 * FAN 4576 */ 4577 /* FAN timeout */ 4578 lpfc_printf_vlog(vport, KERN_WARNING, LOG_DISCOVERY, 4579 "0221 FAN timeout\n"); 4580 /* Start discovery by sending FLOGI, clean up old rpis */ 4581 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, 4582 nlp_listp) { 4583 if (!NLP_CHK_NODE_ACT(ndlp)) 4584 continue; 4585 if (ndlp->nlp_state != NLP_STE_NPR_NODE) 4586 continue; 4587 if (ndlp->nlp_type & NLP_FABRIC) { 4588 /* Clean up the ndlp on Fabric connections */ 4589 lpfc_drop_node(vport, ndlp); 4590 4591 } else if (!(ndlp->nlp_flag & NLP_NPR_ADISC)) { 4592 /* Fail outstanding IO now since device 4593 * is marked for PLOGI. 4594 */ 4595 lpfc_unreg_rpi(vport, ndlp); 4596 } 4597 } 4598 if (vport->port_state != LPFC_FLOGI) { 4599 lpfc_initial_flogi(vport); 4600 return; 4601 } 4602 break; 4603 4604 case LPFC_FDISC: 4605 case LPFC_FLOGI: 4606 /* port_state is identically LPFC_FLOGI while waiting for FLOGI cmpl */ 4607 /* Initial FLOGI timeout */ 4608 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY, 4609 "0222 Initial %s timeout\n", 4610 vport->vpi ? "FDISC" : "FLOGI"); 4611 4612 /* Assume no Fabric and go on with discovery. 4613 * Check for outstanding ELS FLOGI to abort. 4614 */ 4615 4616 /* FLOGI failed, so just use loop map to make discovery list */ 4617 lpfc_disc_list_loopmap(vport); 4618 4619 /* Start discovery */ 4620 lpfc_disc_start(vport); 4621 break; 4622 4623 case LPFC_FABRIC_CFG_LINK: 4624 /* hba_state is identically LPFC_FABRIC_CFG_LINK while waiting for 4625 NameServer login */ 4626 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY, 4627 "0223 Timeout while waiting for " 4628 "NameServer login\n"); 4629 /* Next look for NameServer ndlp */ 4630 ndlp = lpfc_findnode_did(vport, NameServer_DID); 4631 if (ndlp && NLP_CHK_NODE_ACT(ndlp)) 4632 lpfc_els_abort(phba, ndlp); 4633 4634 /* ReStart discovery */ 4635 goto restart_disc; 4636 4637 case LPFC_NS_QRY: 4638 /* Check for wait for NameServer Rsp timeout */ 4639 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY, 4640 "0224 NameServer Query timeout " 4641 "Data: x%x x%x\n", 4642 vport->fc_ns_retry, LPFC_MAX_NS_RETRY); 4643 4644 if (vport->fc_ns_retry < LPFC_MAX_NS_RETRY) { 4645 /* Try it one more time */ 4646 vport->fc_ns_retry++; 4647 rc = lpfc_ns_cmd(vport, SLI_CTNS_GID_FT, 4648 vport->fc_ns_retry, 0); 4649 if (rc == 0) 4650 break; 4651 } 4652 vport->fc_ns_retry = 0; 4653 4654restart_disc: 4655 /* 4656 * Discovery is over. 4657 * set port_state to PORT_READY if SLI2. 4658 * cmpl_reg_vpi will set port_state to READY for SLI3. 4659 */ 4660 if (phba->sli_rev < LPFC_SLI_REV4) { 4661 if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) 4662 lpfc_issue_reg_vpi(phba, vport); 4663 else { /* NPIV Not enabled */ 4664 lpfc_issue_clear_la(phba, vport); 4665 vport->port_state = LPFC_VPORT_READY; 4666 } 4667 } 4668 4669 /* Setup and issue mailbox INITIALIZE LINK command */ 4670 initlinkmbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 4671 if (!initlinkmbox) { 4672 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY, 4673 "0206 Device Discovery " 4674 "completion error\n"); 4675 phba->link_state = LPFC_HBA_ERROR; 4676 break; 4677 } 4678 4679 lpfc_linkdown(phba); 4680 lpfc_init_link(phba, initlinkmbox, phba->cfg_topology, 4681 phba->cfg_link_speed); 4682 initlinkmbox->u.mb.un.varInitLnk.lipsr_AL_PA = 0; 4683 initlinkmbox->vport = vport; 4684 initlinkmbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl; 4685 rc = lpfc_sli_issue_mbox(phba, initlinkmbox, MBX_NOWAIT); 4686 lpfc_set_loopback_flag(phba); 4687 if (rc == MBX_NOT_FINISHED) 4688 mempool_free(initlinkmbox, phba->mbox_mem_pool); 4689 4690 break; 4691 4692 case LPFC_DISC_AUTH: 4693 /* Node Authentication timeout */ 4694 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY, 4695 "0227 Node Authentication timeout\n"); 4696 lpfc_disc_flush_list(vport); 4697 4698 /* 4699 * set port_state to PORT_READY if SLI2. 4700 * cmpl_reg_vpi will set port_state to READY for SLI3. 4701 */ 4702 if (phba->sli_rev < LPFC_SLI_REV4) { 4703 if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) 4704 lpfc_issue_reg_vpi(phba, vport); 4705 else { /* NPIV Not enabled */ 4706 lpfc_issue_clear_la(phba, vport); 4707 vport->port_state = LPFC_VPORT_READY; 4708 } 4709 } 4710 break; 4711 4712 case LPFC_VPORT_READY: 4713 if (vport->fc_flag & FC_RSCN_MODE) { 4714 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY, 4715 "0231 RSCN timeout Data: x%x " 4716 "x%x\n", 4717 vport->fc_ns_retry, LPFC_MAX_NS_RETRY); 4718 4719 /* Cleanup any outstanding ELS commands */ 4720 lpfc_els_flush_cmd(vport); 4721 4722 lpfc_els_flush_rscn(vport); 4723 lpfc_disc_flush_list(vport); 4724 } 4725 break; 4726 4727 default: 4728 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY, 4729 "0273 Unexpected discovery timeout, " 4730 "vport State x%x\n", vport->port_state); 4731 break; 4732 } 4733 4734 switch (phba->link_state) { 4735 case LPFC_CLEAR_LA: 4736 /* CLEAR LA timeout */ 4737 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY, 4738 "0228 CLEAR LA timeout\n"); 4739 clrlaerr = 1; 4740 break; 4741 4742 case LPFC_LINK_UP: 4743 lpfc_issue_clear_la(phba, vport); 4744 /* Drop thru */ 4745 case LPFC_LINK_UNKNOWN: 4746 case LPFC_WARM_START: 4747 case LPFC_INIT_START: 4748 case LPFC_INIT_MBX_CMDS: 4749 case LPFC_LINK_DOWN: 4750 case LPFC_HBA_ERROR: 4751 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY, 4752 "0230 Unexpected timeout, hba link " 4753 "state x%x\n", phba->link_state); 4754 clrlaerr = 1; 4755 break; 4756 4757 case LPFC_HBA_READY: 4758 break; 4759 } 4760 4761 if (clrlaerr) { 4762 lpfc_disc_flush_list(vport); 4763 psli->ring[(psli->extra_ring)].flag &= ~LPFC_STOP_IOCB_EVENT; 4764 psli->ring[(psli->fcp_ring)].flag &= ~LPFC_STOP_IOCB_EVENT; 4765 psli->ring[(psli->next_ring)].flag &= ~LPFC_STOP_IOCB_EVENT; 4766 vport->port_state = LPFC_VPORT_READY; 4767 } 4768 4769 return; 4770} 4771 4772/* 4773 * This routine handles processing a NameServer REG_LOGIN mailbox 4774 * command upon completion. It is setup in the LPFC_MBOXQ 4775 * as the completion routine when the command is 4776 * handed off to the SLI layer. 4777 */ 4778void 4779lpfc_mbx_cmpl_fdmi_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 4780{ 4781 MAILBOX_t *mb = &pmb->u.mb; 4782 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1); 4783 struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) pmb->context2; 4784 struct lpfc_vport *vport = pmb->vport; 4785 4786 pmb->context1 = NULL; 4787 4788 ndlp->nlp_rpi = mb->un.varWords[0]; 4789 ndlp->nlp_flag |= NLP_RPI_VALID; 4790 ndlp->nlp_type |= NLP_FABRIC; 4791 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE); 4792 4793 /* 4794 * Start issuing Fabric-Device Management Interface (FDMI) command to 4795 * 0xfffffa (FDMI well known port) or Delay issuing FDMI command if 4796 * fdmi-on=2 (supporting RPA/hostnmae) 4797 */ 4798 4799 if (vport->cfg_fdmi_on == 1) 4800 lpfc_fdmi_cmd(vport, ndlp, SLI_MGMT_DHBA); 4801 else 4802 mod_timer(&vport->fc_fdmitmo, jiffies + HZ * 60); 4803 4804 /* decrement the node reference count held for this callback 4805 * function. 4806 */ 4807 lpfc_nlp_put(ndlp); 4808 lpfc_mbuf_free(phba, mp->virt, mp->phys); 4809 kfree(mp); 4810 mempool_free(pmb, phba->mbox_mem_pool); 4811 4812 return; 4813} 4814 4815static int 4816lpfc_filter_by_rpi(struct lpfc_nodelist *ndlp, void *param) 4817{ 4818 uint16_t *rpi = param; 4819 4820 return ndlp->nlp_rpi == *rpi; 4821} 4822 4823static int 4824lpfc_filter_by_wwpn(struct lpfc_nodelist *ndlp, void *param) 4825{ 4826 return memcmp(&ndlp->nlp_portname, param, 4827 sizeof(ndlp->nlp_portname)) == 0; 4828} 4829 4830static struct lpfc_nodelist * 4831__lpfc_find_node(struct lpfc_vport *vport, node_filter filter, void *param) 4832{ 4833 struct lpfc_nodelist *ndlp; 4834 4835 list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) { 4836 if (filter(ndlp, param)) 4837 return ndlp; 4838 } 4839 return NULL; 4840} 4841 4842/* 4843 * This routine looks up the ndlp lists for the given RPI. If rpi found it 4844 * returns the node list element pointer else return NULL. 4845 */ 4846struct lpfc_nodelist * 4847__lpfc_findnode_rpi(struct lpfc_vport *vport, uint16_t rpi) 4848{ 4849 return __lpfc_find_node(vport, lpfc_filter_by_rpi, &rpi); 4850} 4851 4852/* 4853 * This routine looks up the ndlp lists for the given WWPN. If WWPN found it 4854 * returns the node element list pointer else return NULL. 4855 */ 4856struct lpfc_nodelist * 4857lpfc_findnode_wwpn(struct lpfc_vport *vport, struct lpfc_name *wwpn) 4858{ 4859 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 4860 struct lpfc_nodelist *ndlp; 4861 4862 spin_lock_irq(shost->host_lock); 4863 ndlp = __lpfc_find_node(vport, lpfc_filter_by_wwpn, wwpn); 4864 spin_unlock_irq(shost->host_lock); 4865 return ndlp; 4866} 4867 4868void 4869lpfc_nlp_init(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 4870 uint32_t did) 4871{ 4872 memset(ndlp, 0, sizeof (struct lpfc_nodelist)); 4873 4874 lpfc_initialize_node(vport, ndlp, did); 4875 INIT_LIST_HEAD(&ndlp->nlp_listp); 4876 4877 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE, 4878 "node init: did:x%x", 4879 ndlp->nlp_DID, 0, 0); 4880 4881 return; 4882} 4883 4884/* This routine releases all resources associated with a specifc NPort's ndlp 4885 * and mempool_free's the nodelist. 4886 */ 4887static void 4888lpfc_nlp_release(struct kref *kref) 4889{ 4890 struct lpfc_hba *phba; 4891 unsigned long flags; 4892 struct lpfc_nodelist *ndlp = container_of(kref, struct lpfc_nodelist, 4893 kref); 4894 4895 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE, 4896 "node release: did:x%x flg:x%x type:x%x", 4897 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type); 4898 4899 lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_NODE, 4900 "0279 lpfc_nlp_release: ndlp:x%p " 4901 "usgmap:x%x refcnt:%d\n", 4902 (void *)ndlp, ndlp->nlp_usg_map, 4903 atomic_read(&ndlp->kref.refcount)); 4904 4905 /* remove ndlp from action. */ 4906 lpfc_nlp_remove(ndlp->vport, ndlp); 4907 4908 /* clear the ndlp active flag for all release cases */ 4909 phba = ndlp->phba; 4910 spin_lock_irqsave(&phba->ndlp_lock, flags); 4911 NLP_CLR_NODE_ACT(ndlp); 4912 spin_unlock_irqrestore(&phba->ndlp_lock, flags); 4913 4914 /* free ndlp memory for final ndlp release */ 4915 if (NLP_CHK_FREE_REQ(ndlp)) { 4916 kfree(ndlp->lat_data); 4917 mempool_free(ndlp, ndlp->phba->nlp_mem_pool); 4918 } 4919} 4920 4921/* This routine bumps the reference count for a ndlp structure to ensure 4922 * that one discovery thread won't free a ndlp while another discovery thread 4923 * is using it. 4924 */ 4925struct lpfc_nodelist * 4926lpfc_nlp_get(struct lpfc_nodelist *ndlp) 4927{ 4928 struct lpfc_hba *phba; 4929 unsigned long flags; 4930 4931 if (ndlp) { 4932 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE, 4933 "node get: did:x%x flg:x%x refcnt:x%x", 4934 ndlp->nlp_DID, ndlp->nlp_flag, 4935 atomic_read(&ndlp->kref.refcount)); 4936 /* The check of ndlp usage to prevent incrementing the 4937 * ndlp reference count that is in the process of being 4938 * released. 4939 */ 4940 phba = ndlp->phba; 4941 spin_lock_irqsave(&phba->ndlp_lock, flags); 4942 if (!NLP_CHK_NODE_ACT(ndlp) || NLP_CHK_FREE_ACK(ndlp)) { 4943 spin_unlock_irqrestore(&phba->ndlp_lock, flags); 4944 lpfc_printf_vlog(ndlp->vport, KERN_WARNING, LOG_NODE, 4945 "0276 lpfc_nlp_get: ndlp:x%p " 4946 "usgmap:x%x refcnt:%d\n", 4947 (void *)ndlp, ndlp->nlp_usg_map, 4948 atomic_read(&ndlp->kref.refcount)); 4949 return NULL; 4950 } else 4951 kref_get(&ndlp->kref); 4952 spin_unlock_irqrestore(&phba->ndlp_lock, flags); 4953 } 4954 return ndlp; 4955} 4956 4957/* This routine decrements the reference count for a ndlp structure. If the 4958 * count goes to 0, this indicates the the associated nodelist should be 4959 * freed. Returning 1 indicates the ndlp resource has been released; on the 4960 * other hand, returning 0 indicates the ndlp resource has not been released 4961 * yet. 4962 */ 4963int 4964lpfc_nlp_put(struct lpfc_nodelist *ndlp) 4965{ 4966 struct lpfc_hba *phba; 4967 unsigned long flags; 4968 4969 if (!ndlp) 4970 return 1; 4971 4972 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE, 4973 "node put: did:x%x flg:x%x refcnt:x%x", 4974 ndlp->nlp_DID, ndlp->nlp_flag, 4975 atomic_read(&ndlp->kref.refcount)); 4976 phba = ndlp->phba; 4977 spin_lock_irqsave(&phba->ndlp_lock, flags); 4978 /* Check the ndlp memory free acknowledge flag to avoid the 4979 * possible race condition that kref_put got invoked again 4980 * after previous one has done ndlp memory free. 4981 */ 4982 if (NLP_CHK_FREE_ACK(ndlp)) { 4983 spin_unlock_irqrestore(&phba->ndlp_lock, flags); 4984 lpfc_printf_vlog(ndlp->vport, KERN_WARNING, LOG_NODE, 4985 "0274 lpfc_nlp_put: ndlp:x%p " 4986 "usgmap:x%x refcnt:%d\n", 4987 (void *)ndlp, ndlp->nlp_usg_map, 4988 atomic_read(&ndlp->kref.refcount)); 4989 return 1; 4990 } 4991 /* Check the ndlp inactivate log flag to avoid the possible 4992 * race condition that kref_put got invoked again after ndlp 4993 * is already in inactivating state. 4994 */ 4995 if (NLP_CHK_IACT_REQ(ndlp)) { 4996 spin_unlock_irqrestore(&phba->ndlp_lock, flags); 4997 lpfc_printf_vlog(ndlp->vport, KERN_WARNING, LOG_NODE, 4998 "0275 lpfc_nlp_put: ndlp:x%p " 4999 "usgmap:x%x refcnt:%d\n", 5000 (void *)ndlp, ndlp->nlp_usg_map, 5001 atomic_read(&ndlp->kref.refcount)); 5002 return 1; 5003 } 5004 /* For last put, mark the ndlp usage flags to make sure no 5005 * other kref_get and kref_put on the same ndlp shall get 5006 * in between the process when the final kref_put has been 5007 * invoked on this ndlp. 5008 */ 5009 if (atomic_read(&ndlp->kref.refcount) == 1) { 5010 /* Indicate ndlp is put to inactive state. */ 5011 NLP_SET_IACT_REQ(ndlp); 5012 /* Acknowledge ndlp memory free has been seen. */ 5013 if (NLP_CHK_FREE_REQ(ndlp)) 5014 NLP_SET_FREE_ACK(ndlp); 5015 } 5016 spin_unlock_irqrestore(&phba->ndlp_lock, flags); 5017 /* Note, the kref_put returns 1 when decrementing a reference 5018 * count that was 1, it invokes the release callback function, 5019 * but it still left the reference count as 1 (not actually 5020 * performs the last decrementation). Otherwise, it actually 5021 * decrements the reference count and returns 0. 5022 */ 5023 return kref_put(&ndlp->kref, lpfc_nlp_release); 5024} 5025 5026/* This routine free's the specified nodelist if it is not in use 5027 * by any other discovery thread. This routine returns 1 if the 5028 * ndlp has been freed. A return value of 0 indicates the ndlp is 5029 * not yet been released. 5030 */ 5031int 5032lpfc_nlp_not_used(struct lpfc_nodelist *ndlp) 5033{ 5034 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE, 5035 "node not used: did:x%x flg:x%x refcnt:x%x", 5036 ndlp->nlp_DID, ndlp->nlp_flag, 5037 atomic_read(&ndlp->kref.refcount)); 5038 if (atomic_read(&ndlp->kref.refcount) == 1) 5039 if (lpfc_nlp_put(ndlp)) 5040 return 1; 5041 return 0; 5042} 5043 5044/** 5045 * lpfc_fcf_inuse - Check if FCF can be unregistered. 5046 * @phba: Pointer to hba context object. 5047 * 5048 * This function iterate through all FC nodes associated 5049 * will all vports to check if there is any node with 5050 * fc_rports associated with it. If there is an fc_rport 5051 * associated with the node, then the node is either in 5052 * discovered state or its devloss_timer is pending. 5053 */ 5054static int 5055lpfc_fcf_inuse(struct lpfc_hba *phba) 5056{ 5057 struct lpfc_vport **vports; 5058 int i, ret = 0; 5059 struct lpfc_nodelist *ndlp; 5060 struct Scsi_Host *shost; 5061 5062 vports = lpfc_create_vport_work_array(phba); 5063 5064 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) { 5065 shost = lpfc_shost_from_vport(vports[i]); 5066 spin_lock_irq(shost->host_lock); 5067 list_for_each_entry(ndlp, &vports[i]->fc_nodes, nlp_listp) { 5068 if (NLP_CHK_NODE_ACT(ndlp) && ndlp->rport && 5069 (ndlp->rport->roles & FC_RPORT_ROLE_FCP_TARGET)) { 5070 ret = 1; 5071 spin_unlock_irq(shost->host_lock); 5072 goto out; 5073 } else { 5074 lpfc_printf_log(phba, KERN_INFO, LOG_ELS, 5075 "2624 RPI %x DID %x flg %x still " 5076 "logged in\n", 5077 ndlp->nlp_rpi, ndlp->nlp_DID, 5078 ndlp->nlp_flag); 5079 if (ndlp->nlp_flag & NLP_RPI_VALID) 5080 ret = 1; 5081 } 5082 } 5083 spin_unlock_irq(shost->host_lock); 5084 } 5085out: 5086 lpfc_destroy_vport_work_array(phba, vports); 5087 return ret; 5088} 5089 5090/** 5091 * lpfc_unregister_vfi_cmpl - Completion handler for unreg vfi. 5092 * @phba: Pointer to hba context object. 5093 * @mboxq: Pointer to mailbox object. 5094 * 5095 * This function frees memory associated with the mailbox command. 5096 */ 5097static void 5098lpfc_unregister_vfi_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq) 5099{ 5100 struct lpfc_vport *vport = mboxq->vport; 5101 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 5102 5103 if (mboxq->u.mb.mbxStatus) { 5104 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY|LOG_MBOX, 5105 "2555 UNREG_VFI mbxStatus error x%x " 5106 "HBA state x%x\n", 5107 mboxq->u.mb.mbxStatus, vport->port_state); 5108 } 5109 spin_lock_irq(shost->host_lock); 5110 phba->pport->fc_flag &= ~FC_VFI_REGISTERED; 5111 spin_unlock_irq(shost->host_lock); 5112 mempool_free(mboxq, phba->mbox_mem_pool); 5113 return; 5114} 5115 5116/** 5117 * lpfc_unregister_fcfi_cmpl - Completion handler for unreg fcfi. 5118 * @phba: Pointer to hba context object. 5119 * @mboxq: Pointer to mailbox object. 5120 * 5121 * This function frees memory associated with the mailbox command. 5122 */ 5123static void 5124lpfc_unregister_fcfi_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq) 5125{ 5126 struct lpfc_vport *vport = mboxq->vport; 5127 5128 if (mboxq->u.mb.mbxStatus) { 5129 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY|LOG_MBOX, 5130 "2550 UNREG_FCFI mbxStatus error x%x " 5131 "HBA state x%x\n", 5132 mboxq->u.mb.mbxStatus, vport->port_state); 5133 } 5134 mempool_free(mboxq, phba->mbox_mem_pool); 5135 return; 5136} 5137 5138/** 5139 * lpfc_unregister_fcf_prep - Unregister fcf record preparation 5140 * @phba: Pointer to hba context object. 5141 * 5142 * This function prepare the HBA for unregistering the currently registered 5143 * FCF from the HBA. It performs unregistering, in order, RPIs, VPIs, and 5144 * VFIs. 5145 */ 5146int 5147lpfc_unregister_fcf_prep(struct lpfc_hba *phba) 5148{ 5149 LPFC_MBOXQ_t *mbox; 5150 struct lpfc_vport **vports; 5151 struct lpfc_nodelist *ndlp; 5152 struct Scsi_Host *shost; 5153 int i, rc; 5154 5155 /* Unregister RPIs */ 5156 if (lpfc_fcf_inuse(phba)) 5157 lpfc_unreg_hba_rpis(phba); 5158 5159 /* At this point, all discovery is aborted */ 5160 phba->pport->port_state = LPFC_VPORT_UNKNOWN; 5161 5162 /* Unregister VPIs */ 5163 vports = lpfc_create_vport_work_array(phba); 5164 if (vports && (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)) 5165 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) { 5166 /* Stop FLOGI/FDISC retries */ 5167 ndlp = lpfc_findnode_did(vports[i], Fabric_DID); 5168 if (ndlp) 5169 lpfc_cancel_retry_delay_tmo(vports[i], ndlp); 5170 lpfc_cleanup_pending_mbox(vports[i]); 5171 lpfc_mbx_unreg_vpi(vports[i]); 5172 shost = lpfc_shost_from_vport(vports[i]); 5173 spin_lock_irq(shost->host_lock); 5174 vports[i]->fc_flag |= FC_VPORT_NEEDS_INIT_VPI; 5175 vports[i]->vpi_state &= ~LPFC_VPI_REGISTERED; 5176 spin_unlock_irq(shost->host_lock); 5177 } 5178 lpfc_destroy_vport_work_array(phba, vports); 5179 5180 /* Cleanup any outstanding ELS commands */ 5181 lpfc_els_flush_all_cmd(phba); 5182 5183 /* Unregister VFI */ 5184 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 5185 if (!mbox) { 5186 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY|LOG_MBOX, 5187 "2556 UNREG_VFI mbox allocation failed" 5188 "HBA state x%x\n", phba->pport->port_state); 5189 return -ENOMEM; 5190 } 5191 5192 lpfc_unreg_vfi(mbox, phba->pport); 5193 mbox->vport = phba->pport; 5194 mbox->mbox_cmpl = lpfc_unregister_vfi_cmpl; 5195 5196 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT); 5197 if (rc == MBX_NOT_FINISHED) { 5198 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY|LOG_MBOX, 5199 "2557 UNREG_VFI issue mbox failed rc x%x " 5200 "HBA state x%x\n", 5201 rc, phba->pport->port_state); 5202 mempool_free(mbox, phba->mbox_mem_pool); 5203 return -EIO; 5204 } 5205 5206 shost = lpfc_shost_from_vport(phba->pport); 5207 spin_lock_irq(shost->host_lock); 5208 phba->pport->fc_flag &= ~FC_VFI_REGISTERED; 5209 spin_unlock_irq(shost->host_lock); 5210 5211 return 0; 5212} 5213 5214/** 5215 * lpfc_sli4_unregister_fcf - Unregister currently registered FCF record 5216 * @phba: Pointer to hba context object. 5217 * 5218 * This function issues synchronous unregister FCF mailbox command to HBA to 5219 * unregister the currently registered FCF record. The driver does not reset 5220 * the driver FCF usage state flags. 5221 * 5222 * Return 0 if successfully issued, none-zero otherwise. 5223 */ 5224int 5225lpfc_sli4_unregister_fcf(struct lpfc_hba *phba) 5226{ 5227 LPFC_MBOXQ_t *mbox; 5228 int rc; 5229 5230 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 5231 if (!mbox) { 5232 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY|LOG_MBOX, 5233 "2551 UNREG_FCFI mbox allocation failed" 5234 "HBA state x%x\n", phba->pport->port_state); 5235 return -ENOMEM; 5236 } 5237 lpfc_unreg_fcfi(mbox, phba->fcf.fcfi); 5238 mbox->vport = phba->pport; 5239 mbox->mbox_cmpl = lpfc_unregister_fcfi_cmpl; 5240 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT); 5241 5242 if (rc == MBX_NOT_FINISHED) { 5243 lpfc_printf_log(phba, KERN_ERR, LOG_SLI, 5244 "2552 Unregister FCFI command failed rc x%x " 5245 "HBA state x%x\n", 5246 rc, phba->pport->port_state); 5247 return -EINVAL; 5248 } 5249 return 0; 5250} 5251 5252/** 5253 * lpfc_unregister_fcf_rescan - Unregister currently registered fcf and rescan 5254 * @phba: Pointer to hba context object. 5255 * 5256 * This function unregisters the currently reigstered FCF. This function 5257 * also tries to find another FCF for discovery by rescan the HBA FCF table. 5258 */ 5259void 5260lpfc_unregister_fcf_rescan(struct lpfc_hba *phba) 5261{ 5262 int rc; 5263 5264 /* Preparation for unregistering fcf */ 5265 rc = lpfc_unregister_fcf_prep(phba); 5266 if (rc) { 5267 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY, 5268 "2748 Failed to prepare for unregistering " 5269 "HBA's FCF record: rc=%d\n", rc); 5270 return; 5271 } 5272 5273 /* Now, unregister FCF record and reset HBA FCF state */ 5274 rc = lpfc_sli4_unregister_fcf(phba); 5275 if (rc) 5276 return; 5277 /* Reset HBA FCF states after successful unregister FCF */ 5278 phba->fcf.fcf_flag = 0; 5279 phba->fcf.current_rec.flag = 0; 5280 5281 /* 5282 * If driver is not unloading, check if there is any other 5283 * FCF record that can be used for discovery. 5284 */ 5285 if ((phba->pport->load_flag & FC_UNLOADING) || 5286 (phba->link_state < LPFC_LINK_UP)) 5287 return; 5288 5289 /* This is considered as the initial FCF discovery scan */ 5290 spin_lock_irq(&phba->hbalock); 5291 phba->fcf.fcf_flag |= FCF_INIT_DISC; 5292 spin_unlock_irq(&phba->hbalock); 5293 5294 /* Reset FCF roundrobin bmask for new discovery */ 5295 memset(phba->fcf.fcf_rr_bmask, 0, sizeof(*phba->fcf.fcf_rr_bmask)); 5296 5297 rc = lpfc_sli4_fcf_scan_read_fcf_rec(phba, LPFC_FCOE_FCF_GET_FIRST); 5298 5299 if (rc) { 5300 spin_lock_irq(&phba->hbalock); 5301 phba->fcf.fcf_flag &= ~FCF_INIT_DISC; 5302 spin_unlock_irq(&phba->hbalock); 5303 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY|LOG_MBOX, 5304 "2553 lpfc_unregister_unused_fcf failed " 5305 "to read FCF record HBA state x%x\n", 5306 phba->pport->port_state); 5307 } 5308} 5309 5310/** 5311 * lpfc_unregister_fcf - Unregister the currently registered fcf record 5312 * @phba: Pointer to hba context object. 5313 * 5314 * This function just unregisters the currently reigstered FCF. It does not 5315 * try to find another FCF for discovery. 5316 */ 5317void 5318lpfc_unregister_fcf(struct lpfc_hba *phba) 5319{ 5320 int rc; 5321 5322 /* Preparation for unregistering fcf */ 5323 rc = lpfc_unregister_fcf_prep(phba); 5324 if (rc) { 5325 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY, 5326 "2749 Failed to prepare for unregistering " 5327 "HBA's FCF record: rc=%d\n", rc); 5328 return; 5329 } 5330 5331 /* Now, unregister FCF record and reset HBA FCF state */ 5332 rc = lpfc_sli4_unregister_fcf(phba); 5333 if (rc) 5334 return; 5335 /* Set proper HBA FCF states after successful unregister FCF */ 5336 spin_lock_irq(&phba->hbalock); 5337 phba->fcf.fcf_flag &= ~FCF_REGISTERED; 5338 spin_unlock_irq(&phba->hbalock); 5339} 5340 5341/** 5342 * lpfc_unregister_unused_fcf - Unregister FCF if all devices are disconnected. 5343 * @phba: Pointer to hba context object. 5344 * 5345 * This function check if there are any connected remote port for the FCF and 5346 * if all the devices are disconnected, this function unregister FCFI. 5347 * This function also tries to use another FCF for discovery. 5348 */ 5349void 5350lpfc_unregister_unused_fcf(struct lpfc_hba *phba) 5351{ 5352 /* 5353 * If HBA is not running in FIP mode, if HBA does not support 5354 * FCoE, if FCF discovery is ongoing, or if FCF has not been 5355 * registered, do nothing. 5356 */ 5357 spin_lock_irq(&phba->hbalock); 5358 if (!(phba->hba_flag & HBA_FCOE_SUPPORT) || 5359 !(phba->fcf.fcf_flag & FCF_REGISTERED) || 5360 !(phba->hba_flag & HBA_FIP_SUPPORT) || 5361 (phba->fcf.fcf_flag & FCF_DISCOVERY) || 5362 (phba->pport->port_state == LPFC_FLOGI)) { 5363 spin_unlock_irq(&phba->hbalock); 5364 return; 5365 } 5366 spin_unlock_irq(&phba->hbalock); 5367 5368 if (lpfc_fcf_inuse(phba)) 5369 return; 5370 5371 lpfc_unregister_fcf_rescan(phba); 5372} 5373 5374/** 5375 * lpfc_read_fcf_conn_tbl - Create driver FCF connection table. 5376 * @phba: Pointer to hba context object. 5377 * @buff: Buffer containing the FCF connection table as in the config 5378 * region. 5379 * This function create driver data structure for the FCF connection 5380 * record table read from config region 23. 5381 */ 5382static void 5383lpfc_read_fcf_conn_tbl(struct lpfc_hba *phba, 5384 uint8_t *buff) 5385{ 5386 struct lpfc_fcf_conn_entry *conn_entry, *next_conn_entry; 5387 struct lpfc_fcf_conn_hdr *conn_hdr; 5388 struct lpfc_fcf_conn_rec *conn_rec; 5389 uint32_t record_count; 5390 int i; 5391 5392 /* Free the current connect table */ 5393 list_for_each_entry_safe(conn_entry, next_conn_entry, 5394 &phba->fcf_conn_rec_list, list) { 5395 list_del_init(&conn_entry->list); 5396 kfree(conn_entry); 5397 } 5398 5399 conn_hdr = (struct lpfc_fcf_conn_hdr *) buff; 5400 record_count = conn_hdr->length * sizeof(uint32_t)/ 5401 sizeof(struct lpfc_fcf_conn_rec); 5402 5403 conn_rec = (struct lpfc_fcf_conn_rec *) 5404 (buff + sizeof(struct lpfc_fcf_conn_hdr)); 5405 5406 for (i = 0; i < record_count; i++) { 5407 if (!(conn_rec[i].flags & FCFCNCT_VALID)) 5408 continue; 5409 conn_entry = kzalloc(sizeof(struct lpfc_fcf_conn_entry), 5410 GFP_KERNEL); 5411 if (!conn_entry) { 5412 lpfc_printf_log(phba, KERN_ERR, LOG_INIT, 5413 "2566 Failed to allocate connection" 5414 " table entry\n"); 5415 return; 5416 } 5417 5418 memcpy(&conn_entry->conn_rec, &conn_rec[i], 5419 sizeof(struct lpfc_fcf_conn_rec)); 5420 conn_entry->conn_rec.vlan_tag = 5421 le16_to_cpu(conn_entry->conn_rec.vlan_tag) & 0xFFF; 5422 conn_entry->conn_rec.flags = 5423 le16_to_cpu(conn_entry->conn_rec.flags); 5424 list_add_tail(&conn_entry->list, 5425 &phba->fcf_conn_rec_list); 5426 } 5427} 5428 5429/** 5430 * lpfc_read_fcoe_param - Read FCoe parameters from conf region.. 5431 * @phba: Pointer to hba context object. 5432 * @buff: Buffer containing the FCoE parameter data structure. 5433 * 5434 * This function update driver data structure with config 5435 * parameters read from config region 23. 5436 */ 5437static void 5438lpfc_read_fcoe_param(struct lpfc_hba *phba, 5439 uint8_t *buff) 5440{ 5441 struct lpfc_fip_param_hdr *fcoe_param_hdr; 5442 struct lpfc_fcoe_params *fcoe_param; 5443 5444 fcoe_param_hdr = (struct lpfc_fip_param_hdr *) 5445 buff; 5446 fcoe_param = (struct lpfc_fcoe_params *) 5447 (buff + sizeof(struct lpfc_fip_param_hdr)); 5448 5449 if ((fcoe_param_hdr->parm_version != FIPP_VERSION) || 5450 (fcoe_param_hdr->length != FCOE_PARAM_LENGTH)) 5451 return; 5452 5453 if (fcoe_param_hdr->parm_flags & FIPP_VLAN_VALID) { 5454 phba->valid_vlan = 1; 5455 phba->vlan_id = le16_to_cpu(fcoe_param->vlan_tag) & 5456 0xFFF; 5457 } 5458 5459 phba->fc_map[0] = fcoe_param->fc_map[0]; 5460 phba->fc_map[1] = fcoe_param->fc_map[1]; 5461 phba->fc_map[2] = fcoe_param->fc_map[2]; 5462 return; 5463} 5464 5465/** 5466 * lpfc_get_rec_conf23 - Get a record type in config region data. 5467 * @buff: Buffer containing config region 23 data. 5468 * @size: Size of the data buffer. 5469 * @rec_type: Record type to be searched. 5470 * 5471 * This function searches config region data to find the begining 5472 * of the record specified by record_type. If record found, this 5473 * function return pointer to the record else return NULL. 5474 */ 5475static uint8_t * 5476lpfc_get_rec_conf23(uint8_t *buff, uint32_t size, uint8_t rec_type) 5477{ 5478 uint32_t offset = 0, rec_length; 5479 5480 if ((buff[0] == LPFC_REGION23_LAST_REC) || 5481 (size < sizeof(uint32_t))) 5482 return NULL; 5483 5484 rec_length = buff[offset + 1]; 5485 5486 /* 5487 * One TLV record has one word header and number of data words 5488 * specified in the rec_length field of the record header. 5489 */ 5490 while ((offset + rec_length * sizeof(uint32_t) + sizeof(uint32_t)) 5491 <= size) { 5492 if (buff[offset] == rec_type) 5493 return &buff[offset]; 5494 5495 if (buff[offset] == LPFC_REGION23_LAST_REC) 5496 return NULL; 5497 5498 offset += rec_length * sizeof(uint32_t) + sizeof(uint32_t); 5499 rec_length = buff[offset + 1]; 5500 } 5501 return NULL; 5502} 5503 5504/** 5505 * lpfc_parse_fcoe_conf - Parse FCoE config data read from config region 23. 5506 * @phba: Pointer to lpfc_hba data structure. 5507 * @buff: Buffer containing config region 23 data. 5508 * @size: Size of the data buffer. 5509 * 5510 * This fuction parse the FCoE config parameters in config region 23 and 5511 * populate driver data structure with the parameters. 5512 */ 5513void 5514lpfc_parse_fcoe_conf(struct lpfc_hba *phba, 5515 uint8_t *buff, 5516 uint32_t size) 5517{ 5518 uint32_t offset = 0, rec_length; 5519 uint8_t *rec_ptr; 5520 5521 /* 5522 * If data size is less than 2 words signature and version cannot be 5523 * verified. 5524 */ 5525 if (size < 2*sizeof(uint32_t)) 5526 return; 5527 5528 /* Check the region signature first */ 5529 if (memcmp(buff, LPFC_REGION23_SIGNATURE, 4)) { 5530 lpfc_printf_log(phba, KERN_ERR, LOG_INIT, 5531 "2567 Config region 23 has bad signature\n"); 5532 return; 5533 } 5534 5535 offset += 4; 5536 5537 /* Check the data structure version */ 5538 if (buff[offset] != LPFC_REGION23_VERSION) { 5539 lpfc_printf_log(phba, KERN_ERR, LOG_INIT, 5540 "2568 Config region 23 has bad version\n"); 5541 return; 5542 } 5543 offset += 4; 5544 5545 rec_length = buff[offset + 1]; 5546 5547 /* Read FCoE param record */ 5548 rec_ptr = lpfc_get_rec_conf23(&buff[offset], 5549 size - offset, FCOE_PARAM_TYPE); 5550 if (rec_ptr) 5551 lpfc_read_fcoe_param(phba, rec_ptr); 5552 5553 /* Read FCF connection table */ 5554 rec_ptr = lpfc_get_rec_conf23(&buff[offset], 5555 size - offset, FCOE_CONN_TBL_TYPE); 5556 if (rec_ptr) 5557 lpfc_read_fcf_conn_tbl(phba, rec_ptr); 5558 5559} 5560