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