1 /******************************************************************* 2 * This file is part of the Emulex Linux Device Driver for * 3 * Fibre Channel Host Bus Adapters. * 4 * Copyright (C) 2004-2008 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/pci.h> 24 #include <linux/kthread.h> 25 #include <linux/interrupt.h> 26 27 #include <scsi/scsi.h> 28 #include <scsi/scsi_device.h> 29 #include <scsi/scsi_host.h> 30 #include <scsi/scsi_transport_fc.h> 31 32 #include "lpfc_hw.h" 33 #include "lpfc_nl.h" 34 #include "lpfc_disc.h" 35 #include "lpfc_sli.h" 36 #include "lpfc_scsi.h" 37 #include "lpfc.h" 38 #include "lpfc_logmsg.h" 39 #include "lpfc_crtn.h" 40 #include "lpfc_vport.h" 41 #include "lpfc_debugfs.h" 42 43 /* AlpaArray for assignment of scsid for scan-down and bind_method */ 44 static uint8_t lpfcAlpaArray[] = { 45 0xEF, 0xE8, 0xE4, 0xE2, 0xE1, 0xE0, 0xDC, 0xDA, 0xD9, 0xD6, 46 0xD5, 0xD4, 0xD3, 0xD2, 0xD1, 0xCE, 0xCD, 0xCC, 0xCB, 0xCA, 47 0xC9, 0xC7, 0xC6, 0xC5, 0xC3, 0xBC, 0xBA, 0xB9, 0xB6, 0xB5, 48 0xB4, 0xB3, 0xB2, 0xB1, 0xAE, 0xAD, 0xAC, 0xAB, 0xAA, 0xA9, 49 0xA7, 0xA6, 0xA5, 0xA3, 0x9F, 0x9E, 0x9D, 0x9B, 0x98, 0x97, 50 0x90, 0x8F, 0x88, 0x84, 0x82, 0x81, 0x80, 0x7C, 0x7A, 0x79, 51 0x76, 0x75, 0x74, 0x73, 0x72, 0x71, 0x6E, 0x6D, 0x6C, 0x6B, 52 0x6A, 0x69, 0x67, 0x66, 0x65, 0x63, 0x5C, 0x5A, 0x59, 0x56, 53 0x55, 0x54, 0x53, 0x52, 0x51, 0x4E, 0x4D, 0x4C, 0x4B, 0x4A, 54 0x49, 0x47, 0x46, 0x45, 0x43, 0x3C, 0x3A, 0x39, 0x36, 0x35, 55 0x34, 0x33, 0x32, 0x31, 0x2E, 0x2D, 0x2C, 0x2B, 0x2A, 0x29, 56 0x27, 0x26, 0x25, 0x23, 0x1F, 0x1E, 0x1D, 0x1B, 0x18, 0x17, 57 0x10, 0x0F, 0x08, 0x04, 0x02, 0x01 58 }; 59 60 static void lpfc_disc_timeout_handler(struct lpfc_vport *); 61 static void lpfc_disc_flush_list(struct lpfc_vport *vport); 62 63 void 64 lpfc_terminate_rport_io(struct fc_rport *rport) 65 { 66 struct lpfc_rport_data *rdata; 67 struct lpfc_nodelist * ndlp; 68 struct lpfc_hba *phba; 69 70 rdata = rport->dd_data; 71 ndlp = rdata->pnode; 72 73 if (!ndlp || !NLP_CHK_NODE_ACT(ndlp)) { 74 if (rport->roles & FC_RPORT_ROLE_FCP_TARGET) 75 printk(KERN_ERR "Cannot find remote node" 76 " to terminate I/O Data x%x\n", 77 rport->port_id); 78 return; 79 } 80 81 phba = ndlp->vport->phba; 82 83 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_RPORT, 84 "rport terminate: sid:x%x did:x%x flg:x%x", 85 ndlp->nlp_sid, ndlp->nlp_DID, ndlp->nlp_flag); 86 87 if (ndlp->nlp_sid != NLP_NO_SID) { 88 lpfc_sli_abort_iocb(ndlp->vport, 89 &phba->sli.ring[phba->sli.fcp_ring], 90 ndlp->nlp_sid, 0, LPFC_CTX_TGT); 91 } 92 } 93 94 /* 95 * This function will be called when dev_loss_tmo fire. 96 */ 97 void 98 lpfc_dev_loss_tmo_callbk(struct fc_rport *rport) 99 { 100 struct lpfc_rport_data *rdata; 101 struct lpfc_nodelist * ndlp; 102 struct lpfc_vport *vport; 103 struct lpfc_hba *phba; 104 struct lpfc_work_evt *evtp; 105 int put_node; 106 int put_rport; 107 108 rdata = rport->dd_data; 109 ndlp = rdata->pnode; 110 if (!ndlp || !NLP_CHK_NODE_ACT(ndlp)) 111 return; 112 113 vport = ndlp->vport; 114 phba = vport->phba; 115 116 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT, 117 "rport devlosscb: sid:x%x did:x%x flg:x%x", 118 ndlp->nlp_sid, ndlp->nlp_DID, ndlp->nlp_flag); 119 120 /* Don't defer this if we are in the process of deleting the vport 121 * or unloading the driver. The unload will cleanup the node 122 * appropriately we just need to cleanup the ndlp rport info here. 123 */ 124 if (vport->load_flag & FC_UNLOADING) { 125 put_node = rdata->pnode != NULL; 126 put_rport = ndlp->rport != NULL; 127 rdata->pnode = NULL; 128 ndlp->rport = NULL; 129 if (put_node) 130 lpfc_nlp_put(ndlp); 131 if (put_rport) 132 put_device(&rport->dev); 133 return; 134 } 135 136 if (ndlp->nlp_state == NLP_STE_MAPPED_NODE) 137 return; 138 139 evtp = &ndlp->dev_loss_evt; 140 141 if (!list_empty(&evtp->evt_listp)) 142 return; 143 144 spin_lock_irq(&phba->hbalock); 145 /* We need to hold the node by incrementing the reference 146 * count until this queued work is done 147 */ 148 evtp->evt_arg1 = lpfc_nlp_get(ndlp); 149 if (evtp->evt_arg1) { 150 evtp->evt = LPFC_EVT_DEV_LOSS; 151 list_add_tail(&evtp->evt_listp, &phba->work_list); 152 lpfc_worker_wake_up(phba); 153 } 154 spin_unlock_irq(&phba->hbalock); 155 156 return; 157 } 158 159 /* 160 * This function is called from the worker thread when dev_loss_tmo 161 * expire. 162 */ 163 static void 164 lpfc_dev_loss_tmo_handler(struct lpfc_nodelist *ndlp) 165 { 166 struct lpfc_rport_data *rdata; 167 struct fc_rport *rport; 168 struct lpfc_vport *vport; 169 struct lpfc_hba *phba; 170 uint8_t *name; 171 int put_node; 172 int put_rport; 173 int warn_on = 0; 174 175 rport = ndlp->rport; 176 177 if (!rport) 178 return; 179 180 rdata = rport->dd_data; 181 name = (uint8_t *) &ndlp->nlp_portname; 182 vport = ndlp->vport; 183 phba = vport->phba; 184 185 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT, 186 "rport devlosstmo:did:x%x type:x%x id:x%x", 187 ndlp->nlp_DID, ndlp->nlp_type, rport->scsi_target_id); 188 189 /* Don't defer this if we are in the process of deleting the vport 190 * or unloading the driver. The unload will cleanup the node 191 * appropriately we just need to cleanup the ndlp rport info here. 192 */ 193 if (vport->load_flag & FC_UNLOADING) { 194 if (ndlp->nlp_sid != NLP_NO_SID) { 195 /* flush the target */ 196 lpfc_sli_abort_iocb(vport, 197 &phba->sli.ring[phba->sli.fcp_ring], 198 ndlp->nlp_sid, 0, LPFC_CTX_TGT); 199 } 200 put_node = rdata->pnode != NULL; 201 put_rport = ndlp->rport != NULL; 202 rdata->pnode = NULL; 203 ndlp->rport = NULL; 204 if (put_node) 205 lpfc_nlp_put(ndlp); 206 if (put_rport) 207 put_device(&rport->dev); 208 return; 209 } 210 211 if (ndlp->nlp_state == NLP_STE_MAPPED_NODE) { 212 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, 213 "0284 Devloss timeout Ignored on " 214 "WWPN %x:%x:%x:%x:%x:%x:%x:%x " 215 "NPort x%x\n", 216 *name, *(name+1), *(name+2), *(name+3), 217 *(name+4), *(name+5), *(name+6), *(name+7), 218 ndlp->nlp_DID); 219 return; 220 } 221 222 if (ndlp->nlp_type & NLP_FABRIC) { 223 /* We will clean up these Nodes in linkup */ 224 put_node = rdata->pnode != NULL; 225 put_rport = ndlp->rport != NULL; 226 rdata->pnode = NULL; 227 ndlp->rport = NULL; 228 if (put_node) 229 lpfc_nlp_put(ndlp); 230 if (put_rport) 231 put_device(&rport->dev); 232 return; 233 } 234 235 if (ndlp->nlp_sid != NLP_NO_SID) { 236 warn_on = 1; 237 /* flush the target */ 238 lpfc_sli_abort_iocb(vport, &phba->sli.ring[phba->sli.fcp_ring], 239 ndlp->nlp_sid, 0, LPFC_CTX_TGT); 240 } 241 242 if (warn_on) { 243 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY, 244 "0203 Devloss timeout on " 245 "WWPN %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x " 246 "NPort x%06x Data: x%x x%x x%x\n", 247 *name, *(name+1), *(name+2), *(name+3), 248 *(name+4), *(name+5), *(name+6), *(name+7), 249 ndlp->nlp_DID, ndlp->nlp_flag, 250 ndlp->nlp_state, ndlp->nlp_rpi); 251 } else { 252 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, 253 "0204 Devloss timeout on " 254 "WWPN %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x " 255 "NPort x%06x Data: x%x x%x x%x\n", 256 *name, *(name+1), *(name+2), *(name+3), 257 *(name+4), *(name+5), *(name+6), *(name+7), 258 ndlp->nlp_DID, ndlp->nlp_flag, 259 ndlp->nlp_state, ndlp->nlp_rpi); 260 } 261 262 put_node = rdata->pnode != NULL; 263 put_rport = ndlp->rport != NULL; 264 rdata->pnode = NULL; 265 ndlp->rport = NULL; 266 if (put_node) 267 lpfc_nlp_put(ndlp); 268 if (put_rport) 269 put_device(&rport->dev); 270 271 if (!(vport->load_flag & FC_UNLOADING) && 272 !(ndlp->nlp_flag & NLP_DELAY_TMO) && 273 !(ndlp->nlp_flag & NLP_NPR_2B_DISC) && 274 (ndlp->nlp_state != NLP_STE_UNMAPPED_NODE)) 275 lpfc_disc_state_machine(vport, ndlp, NULL, NLP_EVT_DEVICE_RM); 276 } 277 278 /** 279 * lpfc_alloc_fast_evt: Allocates data structure for posting event. 280 * @phba: Pointer to hba context object. 281 * 282 * This function is called from the functions which need to post 283 * events from interrupt context. This function allocates data 284 * structure required for posting event. It also keeps track of 285 * number of events pending and prevent event storm when there are 286 * too many events. 287 **/ 288 struct lpfc_fast_path_event * 289 lpfc_alloc_fast_evt(struct lpfc_hba *phba) { 290 struct lpfc_fast_path_event *ret; 291 292 /* If there are lot of fast event do not exhaust memory due to this */ 293 if (atomic_read(&phba->fast_event_count) > LPFC_MAX_EVT_COUNT) 294 return NULL; 295 296 ret = kzalloc(sizeof(struct lpfc_fast_path_event), 297 GFP_ATOMIC); 298 if (ret) 299 atomic_inc(&phba->fast_event_count); 300 INIT_LIST_HEAD(&ret->work_evt.evt_listp); 301 ret->work_evt.evt = LPFC_EVT_FASTPATH_MGMT_EVT; 302 return ret; 303 } 304 305 /** 306 * lpfc_free_fast_evt: Frees event data structure. 307 * @phba: Pointer to hba context object. 308 * @evt: Event object which need to be freed. 309 * 310 * This function frees the data structure required for posting 311 * events. 312 **/ 313 void 314 lpfc_free_fast_evt(struct lpfc_hba *phba, 315 struct lpfc_fast_path_event *evt) { 316 317 atomic_dec(&phba->fast_event_count); 318 kfree(evt); 319 } 320 321 /** 322 * lpfc_send_fastpath_evt: Posts events generated from fast path. 323 * @phba: Pointer to hba context object. 324 * @evtp: Event data structure. 325 * 326 * This function is called from worker thread, when the interrupt 327 * context need to post an event. This function posts the event 328 * to fc transport netlink interface. 329 **/ 330 static void 331 lpfc_send_fastpath_evt(struct lpfc_hba *phba, 332 struct lpfc_work_evt *evtp) 333 { 334 unsigned long evt_category, evt_sub_category; 335 struct lpfc_fast_path_event *fast_evt_data; 336 char *evt_data; 337 uint32_t evt_data_size; 338 struct Scsi_Host *shost; 339 340 fast_evt_data = container_of(evtp, struct lpfc_fast_path_event, 341 work_evt); 342 343 evt_category = (unsigned long) fast_evt_data->un.fabric_evt.event_type; 344 evt_sub_category = (unsigned long) fast_evt_data->un. 345 fabric_evt.subcategory; 346 shost = lpfc_shost_from_vport(fast_evt_data->vport); 347 if (evt_category == FC_REG_FABRIC_EVENT) { 348 if (evt_sub_category == LPFC_EVENT_FCPRDCHKERR) { 349 evt_data = (char *) &fast_evt_data->un.read_check_error; 350 evt_data_size = sizeof(fast_evt_data->un. 351 read_check_error); 352 } else if ((evt_sub_category == LPFC_EVENT_FABRIC_BUSY) || 353 (evt_sub_category == LPFC_EVENT_PORT_BUSY)) { 354 evt_data = (char *) &fast_evt_data->un.fabric_evt; 355 evt_data_size = sizeof(fast_evt_data->un.fabric_evt); 356 } else { 357 lpfc_free_fast_evt(phba, fast_evt_data); 358 return; 359 } 360 } else if (evt_category == FC_REG_SCSI_EVENT) { 361 switch (evt_sub_category) { 362 case LPFC_EVENT_QFULL: 363 case LPFC_EVENT_DEVBSY: 364 evt_data = (char *) &fast_evt_data->un.scsi_evt; 365 evt_data_size = sizeof(fast_evt_data->un.scsi_evt); 366 break; 367 case LPFC_EVENT_CHECK_COND: 368 evt_data = (char *) &fast_evt_data->un.check_cond_evt; 369 evt_data_size = sizeof(fast_evt_data->un. 370 check_cond_evt); 371 break; 372 case LPFC_EVENT_VARQUEDEPTH: 373 evt_data = (char *) &fast_evt_data->un.queue_depth_evt; 374 evt_data_size = sizeof(fast_evt_data->un. 375 queue_depth_evt); 376 break; 377 default: 378 lpfc_free_fast_evt(phba, fast_evt_data); 379 return; 380 } 381 } else { 382 lpfc_free_fast_evt(phba, fast_evt_data); 383 return; 384 } 385 386 fc_host_post_vendor_event(shost, 387 fc_get_event_number(), 388 evt_data_size, 389 evt_data, 390 LPFC_NL_VENDOR_ID); 391 392 lpfc_free_fast_evt(phba, fast_evt_data); 393 return; 394 } 395 396 static void 397 lpfc_work_list_done(struct lpfc_hba *phba) 398 { 399 struct lpfc_work_evt *evtp = NULL; 400 struct lpfc_nodelist *ndlp; 401 int free_evt; 402 403 spin_lock_irq(&phba->hbalock); 404 while (!list_empty(&phba->work_list)) { 405 list_remove_head((&phba->work_list), evtp, typeof(*evtp), 406 evt_listp); 407 spin_unlock_irq(&phba->hbalock); 408 free_evt = 1; 409 switch (evtp->evt) { 410 case LPFC_EVT_ELS_RETRY: 411 ndlp = (struct lpfc_nodelist *) (evtp->evt_arg1); 412 lpfc_els_retry_delay_handler(ndlp); 413 free_evt = 0; /* evt is part of ndlp */ 414 /* decrement the node reference count held 415 * for this queued work 416 */ 417 lpfc_nlp_put(ndlp); 418 break; 419 case LPFC_EVT_DEV_LOSS: 420 ndlp = (struct lpfc_nodelist *)(evtp->evt_arg1); 421 lpfc_dev_loss_tmo_handler(ndlp); 422 free_evt = 0; 423 /* decrement the node reference count held for 424 * this queued work 425 */ 426 lpfc_nlp_put(ndlp); 427 break; 428 case LPFC_EVT_ONLINE: 429 if (phba->link_state < LPFC_LINK_DOWN) 430 *(int *) (evtp->evt_arg1) = lpfc_online(phba); 431 else 432 *(int *) (evtp->evt_arg1) = 0; 433 complete((struct completion *)(evtp->evt_arg2)); 434 break; 435 case LPFC_EVT_OFFLINE_PREP: 436 if (phba->link_state >= LPFC_LINK_DOWN) 437 lpfc_offline_prep(phba); 438 *(int *)(evtp->evt_arg1) = 0; 439 complete((struct completion *)(evtp->evt_arg2)); 440 break; 441 case LPFC_EVT_OFFLINE: 442 lpfc_offline(phba); 443 lpfc_sli_brdrestart(phba); 444 *(int *)(evtp->evt_arg1) = 445 lpfc_sli_brdready(phba, HS_FFRDY | HS_MBRDY); 446 lpfc_unblock_mgmt_io(phba); 447 complete((struct completion *)(evtp->evt_arg2)); 448 break; 449 case LPFC_EVT_WARM_START: 450 lpfc_offline(phba); 451 lpfc_reset_barrier(phba); 452 lpfc_sli_brdreset(phba); 453 lpfc_hba_down_post(phba); 454 *(int *)(evtp->evt_arg1) = 455 lpfc_sli_brdready(phba, HS_MBRDY); 456 lpfc_unblock_mgmt_io(phba); 457 complete((struct completion *)(evtp->evt_arg2)); 458 break; 459 case LPFC_EVT_KILL: 460 lpfc_offline(phba); 461 *(int *)(evtp->evt_arg1) 462 = (phba->pport->stopped) 463 ? 0 : lpfc_sli_brdkill(phba); 464 lpfc_unblock_mgmt_io(phba); 465 complete((struct completion *)(evtp->evt_arg2)); 466 break; 467 case LPFC_EVT_FASTPATH_MGMT_EVT: 468 lpfc_send_fastpath_evt(phba, evtp); 469 free_evt = 0; 470 break; 471 } 472 if (free_evt) 473 kfree(evtp); 474 spin_lock_irq(&phba->hbalock); 475 } 476 spin_unlock_irq(&phba->hbalock); 477 478 } 479 480 static void 481 lpfc_work_done(struct lpfc_hba *phba) 482 { 483 struct lpfc_sli_ring *pring; 484 uint32_t ha_copy, status, control, work_port_events; 485 struct lpfc_vport **vports; 486 struct lpfc_vport *vport; 487 int i; 488 489 spin_lock_irq(&phba->hbalock); 490 ha_copy = phba->work_ha; 491 phba->work_ha = 0; 492 spin_unlock_irq(&phba->hbalock); 493 494 if (ha_copy & HA_ERATT) 495 /* Handle the error attention event */ 496 lpfc_handle_eratt(phba); 497 498 if (ha_copy & HA_MBATT) 499 lpfc_sli_handle_mb_event(phba); 500 501 if (ha_copy & HA_LATT) 502 lpfc_handle_latt(phba); 503 504 vports = lpfc_create_vport_work_array(phba); 505 if (vports != NULL) 506 for(i = 0; i <= phba->max_vpi; i++) { 507 /* 508 * We could have no vports in array if unloading, so if 509 * this happens then just use the pport 510 */ 511 if (vports[i] == NULL && i == 0) 512 vport = phba->pport; 513 else 514 vport = vports[i]; 515 if (vport == NULL) 516 break; 517 spin_lock_irq(&vport->work_port_lock); 518 work_port_events = vport->work_port_events; 519 vport->work_port_events &= ~work_port_events; 520 spin_unlock_irq(&vport->work_port_lock); 521 if (work_port_events & WORKER_DISC_TMO) 522 lpfc_disc_timeout_handler(vport); 523 if (work_port_events & WORKER_ELS_TMO) 524 lpfc_els_timeout_handler(vport); 525 if (work_port_events & WORKER_HB_TMO) 526 lpfc_hb_timeout_handler(phba); 527 if (work_port_events & WORKER_MBOX_TMO) 528 lpfc_mbox_timeout_handler(phba); 529 if (work_port_events & WORKER_FABRIC_BLOCK_TMO) 530 lpfc_unblock_fabric_iocbs(phba); 531 if (work_port_events & WORKER_FDMI_TMO) 532 lpfc_fdmi_timeout_handler(vport); 533 if (work_port_events & WORKER_RAMP_DOWN_QUEUE) 534 lpfc_ramp_down_queue_handler(phba); 535 if (work_port_events & WORKER_RAMP_UP_QUEUE) 536 lpfc_ramp_up_queue_handler(phba); 537 } 538 lpfc_destroy_vport_work_array(phba, vports); 539 540 pring = &phba->sli.ring[LPFC_ELS_RING]; 541 status = (ha_copy & (HA_RXMASK << (4*LPFC_ELS_RING))); 542 status >>= (4*LPFC_ELS_RING); 543 if ((status & HA_RXMASK) 544 || (pring->flag & LPFC_DEFERRED_RING_EVENT)) { 545 if (pring->flag & LPFC_STOP_IOCB_EVENT) { 546 pring->flag |= LPFC_DEFERRED_RING_EVENT; 547 /* Set the lpfc data pending flag */ 548 set_bit(LPFC_DATA_READY, &phba->data_flags); 549 } else { 550 pring->flag &= ~LPFC_DEFERRED_RING_EVENT; 551 lpfc_sli_handle_slow_ring_event(phba, pring, 552 (status & 553 HA_RXMASK)); 554 } 555 /* 556 * Turn on Ring interrupts 557 */ 558 spin_lock_irq(&phba->hbalock); 559 control = readl(phba->HCregaddr); 560 if (!(control & (HC_R0INT_ENA << LPFC_ELS_RING))) { 561 lpfc_debugfs_slow_ring_trc(phba, 562 "WRK Enable ring: cntl:x%x hacopy:x%x", 563 control, ha_copy, 0); 564 565 control |= (HC_R0INT_ENA << LPFC_ELS_RING); 566 writel(control, phba->HCregaddr); 567 readl(phba->HCregaddr); /* flush */ 568 } 569 else { 570 lpfc_debugfs_slow_ring_trc(phba, 571 "WRK Ring ok: cntl:x%x hacopy:x%x", 572 control, ha_copy, 0); 573 } 574 spin_unlock_irq(&phba->hbalock); 575 } 576 lpfc_work_list_done(phba); 577 } 578 579 int 580 lpfc_do_work(void *p) 581 { 582 struct lpfc_hba *phba = p; 583 int rc; 584 585 set_user_nice(current, -20); 586 phba->data_flags = 0; 587 588 while (!kthread_should_stop()) { 589 /* wait and check worker queue activities */ 590 rc = wait_event_interruptible(phba->work_waitq, 591 (test_and_clear_bit(LPFC_DATA_READY, 592 &phba->data_flags) 593 || kthread_should_stop())); 594 /* Signal wakeup shall terminate the worker thread */ 595 if (rc) { 596 lpfc_printf_log(phba, KERN_ERR, LOG_ELS, 597 "0433 Wakeup on signal: rc=x%x\n", rc); 598 break; 599 } 600 601 /* Attend pending lpfc data processing */ 602 lpfc_work_done(phba); 603 } 604 phba->worker_thread = NULL; 605 lpfc_printf_log(phba, KERN_INFO, LOG_ELS, 606 "0432 Worker thread stopped.\n"); 607 return 0; 608 } 609 610 /* 611 * This is only called to handle FC worker events. Since this a rare 612 * occurance, we allocate a struct lpfc_work_evt structure here instead of 613 * embedding it in the IOCB. 614 */ 615 int 616 lpfc_workq_post_event(struct lpfc_hba *phba, void *arg1, void *arg2, 617 uint32_t evt) 618 { 619 struct lpfc_work_evt *evtp; 620 unsigned long flags; 621 622 /* 623 * All Mailbox completions and LPFC_ELS_RING rcv ring IOCB events will 624 * be queued to worker thread for processing 625 */ 626 evtp = kmalloc(sizeof(struct lpfc_work_evt), GFP_ATOMIC); 627 if (!evtp) 628 return 0; 629 630 evtp->evt_arg1 = arg1; 631 evtp->evt_arg2 = arg2; 632 evtp->evt = evt; 633 634 spin_lock_irqsave(&phba->hbalock, flags); 635 list_add_tail(&evtp->evt_listp, &phba->work_list); 636 spin_unlock_irqrestore(&phba->hbalock, flags); 637 638 lpfc_worker_wake_up(phba); 639 640 return 1; 641 } 642 643 void 644 lpfc_cleanup_rpis(struct lpfc_vport *vport, int remove) 645 { 646 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 647 struct lpfc_hba *phba = vport->phba; 648 struct lpfc_nodelist *ndlp, *next_ndlp; 649 int rc; 650 651 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) { 652 if (!NLP_CHK_NODE_ACT(ndlp)) 653 continue; 654 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE) 655 continue; 656 if ((phba->sli3_options & LPFC_SLI3_VPORT_TEARDOWN) || 657 ((vport->port_type == LPFC_NPIV_PORT) && 658 (ndlp->nlp_DID == NameServer_DID))) 659 lpfc_unreg_rpi(vport, ndlp); 660 661 /* Leave Fabric nodes alone on link down */ 662 if (!remove && ndlp->nlp_type & NLP_FABRIC) 663 continue; 664 rc = lpfc_disc_state_machine(vport, ndlp, NULL, 665 remove 666 ? NLP_EVT_DEVICE_RM 667 : NLP_EVT_DEVICE_RECOVERY); 668 } 669 if (phba->sli3_options & LPFC_SLI3_VPORT_TEARDOWN) { 670 lpfc_mbx_unreg_vpi(vport); 671 spin_lock_irq(shost->host_lock); 672 vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI; 673 spin_unlock_irq(shost->host_lock); 674 } 675 } 676 677 void 678 lpfc_port_link_failure(struct lpfc_vport *vport) 679 { 680 /* Cleanup any outstanding RSCN activity */ 681 lpfc_els_flush_rscn(vport); 682 683 /* Cleanup any outstanding ELS commands */ 684 lpfc_els_flush_cmd(vport); 685 686 lpfc_cleanup_rpis(vport, 0); 687 688 /* Turn off discovery timer if its running */ 689 lpfc_can_disctmo(vport); 690 } 691 692 static void 693 lpfc_linkdown_port(struct lpfc_vport *vport) 694 { 695 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 696 697 fc_host_post_event(shost, fc_get_event_number(), FCH_EVT_LINKDOWN, 0); 698 699 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, 700 "Link Down: state:x%x rtry:x%x flg:x%x", 701 vport->port_state, vport->fc_ns_retry, vport->fc_flag); 702 703 lpfc_port_link_failure(vport); 704 705 } 706 707 int 708 lpfc_linkdown(struct lpfc_hba *phba) 709 { 710 struct lpfc_vport *vport = phba->pport; 711 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 712 struct lpfc_vport **vports; 713 LPFC_MBOXQ_t *mb; 714 int i; 715 716 if (phba->link_state == LPFC_LINK_DOWN) 717 return 0; 718 spin_lock_irq(&phba->hbalock); 719 if (phba->link_state > LPFC_LINK_DOWN) { 720 phba->link_state = LPFC_LINK_DOWN; 721 phba->pport->fc_flag &= ~FC_LBIT; 722 } 723 spin_unlock_irq(&phba->hbalock); 724 vports = lpfc_create_vport_work_array(phba); 725 if (vports != NULL) 726 for(i = 0; i <= phba->max_vpi && vports[i] != NULL; i++) { 727 /* Issue a LINK DOWN event to all nodes */ 728 lpfc_linkdown_port(vports[i]); 729 } 730 lpfc_destroy_vport_work_array(phba, vports); 731 /* Clean up any firmware default rpi's */ 732 mb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 733 if (mb) { 734 lpfc_unreg_did(phba, 0xffff, 0xffffffff, mb); 735 mb->vport = vport; 736 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl; 737 if (lpfc_sli_issue_mbox(phba, mb, MBX_NOWAIT) 738 == MBX_NOT_FINISHED) { 739 mempool_free(mb, phba->mbox_mem_pool); 740 } 741 } 742 743 /* Setup myDID for link up if we are in pt2pt mode */ 744 if (phba->pport->fc_flag & FC_PT2PT) { 745 phba->pport->fc_myDID = 0; 746 mb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 747 if (mb) { 748 lpfc_config_link(phba, mb); 749 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl; 750 mb->vport = vport; 751 if (lpfc_sli_issue_mbox(phba, mb, MBX_NOWAIT) 752 == MBX_NOT_FINISHED) { 753 mempool_free(mb, phba->mbox_mem_pool); 754 } 755 } 756 spin_lock_irq(shost->host_lock); 757 phba->pport->fc_flag &= ~(FC_PT2PT | FC_PT2PT_PLOGI); 758 spin_unlock_irq(shost->host_lock); 759 } 760 761 return 0; 762 } 763 764 static void 765 lpfc_linkup_cleanup_nodes(struct lpfc_vport *vport) 766 { 767 struct lpfc_nodelist *ndlp; 768 769 list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) { 770 if (!NLP_CHK_NODE_ACT(ndlp)) 771 continue; 772 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE) 773 continue; 774 if (ndlp->nlp_type & NLP_FABRIC) { 775 /* On Linkup its safe to clean up the ndlp 776 * from Fabric connections. 777 */ 778 if (ndlp->nlp_DID != Fabric_DID) 779 lpfc_unreg_rpi(vport, ndlp); 780 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE); 781 } else if (!(ndlp->nlp_flag & NLP_NPR_ADISC)) { 782 /* Fail outstanding IO now since device is 783 * marked for PLOGI. 784 */ 785 lpfc_unreg_rpi(vport, ndlp); 786 } 787 } 788 } 789 790 static void 791 lpfc_linkup_port(struct lpfc_vport *vport) 792 { 793 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 794 struct lpfc_hba *phba = vport->phba; 795 796 if ((vport->load_flag & FC_UNLOADING) != 0) 797 return; 798 799 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, 800 "Link Up: top:x%x speed:x%x flg:x%x", 801 phba->fc_topology, phba->fc_linkspeed, phba->link_flag); 802 803 /* If NPIV is not enabled, only bring the physical port up */ 804 if (!(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) && 805 (vport != phba->pport)) 806 return; 807 808 fc_host_post_event(shost, fc_get_event_number(), FCH_EVT_LINKUP, 0); 809 810 spin_lock_irq(shost->host_lock); 811 vport->fc_flag &= ~(FC_PT2PT | FC_PT2PT_PLOGI | FC_ABORT_DISCOVERY | 812 FC_RSCN_MODE | FC_NLP_MORE | FC_RSCN_DISCOVERY); 813 vport->fc_flag |= FC_NDISC_ACTIVE; 814 vport->fc_ns_retry = 0; 815 spin_unlock_irq(shost->host_lock); 816 817 if (vport->fc_flag & FC_LBIT) 818 lpfc_linkup_cleanup_nodes(vport); 819 820 } 821 822 static int 823 lpfc_linkup(struct lpfc_hba *phba) 824 { 825 struct lpfc_vport **vports; 826 int i; 827 828 phba->link_state = LPFC_LINK_UP; 829 830 /* Unblock fabric iocbs if they are blocked */ 831 clear_bit(FABRIC_COMANDS_BLOCKED, &phba->bit_flags); 832 del_timer_sync(&phba->fabric_block_timer); 833 834 vports = lpfc_create_vport_work_array(phba); 835 if (vports != NULL) 836 for(i = 0; i <= phba->max_vpi && vports[i] != NULL; i++) 837 lpfc_linkup_port(vports[i]); 838 lpfc_destroy_vport_work_array(phba, vports); 839 if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) 840 lpfc_issue_clear_la(phba, phba->pport); 841 842 return 0; 843 } 844 845 /* 846 * This routine handles processing a CLEAR_LA mailbox 847 * command upon completion. It is setup in the LPFC_MBOXQ 848 * as the completion routine when the command is 849 * handed off to the SLI layer. 850 */ 851 static void 852 lpfc_mbx_cmpl_clear_la(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 853 { 854 struct lpfc_vport *vport = pmb->vport; 855 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 856 struct lpfc_sli *psli = &phba->sli; 857 MAILBOX_t *mb = &pmb->mb; 858 uint32_t control; 859 860 /* Since we don't do discovery right now, turn these off here */ 861 psli->ring[psli->extra_ring].flag &= ~LPFC_STOP_IOCB_EVENT; 862 psli->ring[psli->fcp_ring].flag &= ~LPFC_STOP_IOCB_EVENT; 863 psli->ring[psli->next_ring].flag &= ~LPFC_STOP_IOCB_EVENT; 864 865 /* Check for error */ 866 if ((mb->mbxStatus) && (mb->mbxStatus != 0x1601)) { 867 /* CLEAR_LA mbox error <mbxStatus> state <hba_state> */ 868 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX, 869 "0320 CLEAR_LA mbxStatus error x%x hba " 870 "state x%x\n", 871 mb->mbxStatus, vport->port_state); 872 phba->link_state = LPFC_HBA_ERROR; 873 goto out; 874 } 875 876 if (vport->port_type == LPFC_PHYSICAL_PORT) 877 phba->link_state = LPFC_HBA_READY; 878 879 spin_lock_irq(&phba->hbalock); 880 psli->sli_flag |= LPFC_PROCESS_LA; 881 control = readl(phba->HCregaddr); 882 control |= HC_LAINT_ENA; 883 writel(control, phba->HCregaddr); 884 readl(phba->HCregaddr); /* flush */ 885 spin_unlock_irq(&phba->hbalock); 886 mempool_free(pmb, phba->mbox_mem_pool); 887 return; 888 889 out: 890 /* Device Discovery completes */ 891 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, 892 "0225 Device Discovery completes\n"); 893 mempool_free(pmb, phba->mbox_mem_pool); 894 895 spin_lock_irq(shost->host_lock); 896 vport->fc_flag &= ~FC_ABORT_DISCOVERY; 897 spin_unlock_irq(shost->host_lock); 898 899 lpfc_can_disctmo(vport); 900 901 /* turn on Link Attention interrupts */ 902 903 spin_lock_irq(&phba->hbalock); 904 psli->sli_flag |= LPFC_PROCESS_LA; 905 control = readl(phba->HCregaddr); 906 control |= HC_LAINT_ENA; 907 writel(control, phba->HCregaddr); 908 readl(phba->HCregaddr); /* flush */ 909 spin_unlock_irq(&phba->hbalock); 910 911 return; 912 } 913 914 915 static void 916 lpfc_mbx_cmpl_local_config_link(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 917 { 918 struct lpfc_vport *vport = pmb->vport; 919 920 if (pmb->mb.mbxStatus) 921 goto out; 922 923 mempool_free(pmb, phba->mbox_mem_pool); 924 925 if (phba->fc_topology == TOPOLOGY_LOOP && 926 vport->fc_flag & FC_PUBLIC_LOOP && 927 !(vport->fc_flag & FC_LBIT)) { 928 /* Need to wait for FAN - use discovery timer 929 * for timeout. port_state is identically 930 * LPFC_LOCAL_CFG_LINK while waiting for FAN 931 */ 932 lpfc_set_disctmo(vport); 933 return; 934 } 935 936 /* Start discovery by sending a FLOGI. port_state is identically 937 * LPFC_FLOGI while waiting for FLOGI cmpl 938 */ 939 if (vport->port_state != LPFC_FLOGI) { 940 lpfc_initial_flogi(vport); 941 } 942 return; 943 944 out: 945 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX, 946 "0306 CONFIG_LINK mbxStatus error x%x " 947 "HBA state x%x\n", 948 pmb->mb.mbxStatus, vport->port_state); 949 mempool_free(pmb, phba->mbox_mem_pool); 950 951 lpfc_linkdown(phba); 952 953 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY, 954 "0200 CONFIG_LINK bad hba state x%x\n", 955 vport->port_state); 956 957 lpfc_issue_clear_la(phba, vport); 958 return; 959 } 960 961 static void 962 lpfc_mbx_cmpl_read_sparam(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 963 { 964 MAILBOX_t *mb = &pmb->mb; 965 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) pmb->context1; 966 struct lpfc_vport *vport = pmb->vport; 967 968 969 /* Check for error */ 970 if (mb->mbxStatus) { 971 /* READ_SPARAM mbox error <mbxStatus> state <hba_state> */ 972 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX, 973 "0319 READ_SPARAM mbxStatus error x%x " 974 "hba state x%x>\n", 975 mb->mbxStatus, vport->port_state); 976 lpfc_linkdown(phba); 977 goto out; 978 } 979 980 memcpy((uint8_t *) &vport->fc_sparam, (uint8_t *) mp->virt, 981 sizeof (struct serv_parm)); 982 if (phba->cfg_soft_wwnn) 983 u64_to_wwn(phba->cfg_soft_wwnn, 984 vport->fc_sparam.nodeName.u.wwn); 985 if (phba->cfg_soft_wwpn) 986 u64_to_wwn(phba->cfg_soft_wwpn, 987 vport->fc_sparam.portName.u.wwn); 988 memcpy(&vport->fc_nodename, &vport->fc_sparam.nodeName, 989 sizeof(vport->fc_nodename)); 990 memcpy(&vport->fc_portname, &vport->fc_sparam.portName, 991 sizeof(vport->fc_portname)); 992 if (vport->port_type == LPFC_PHYSICAL_PORT) { 993 memcpy(&phba->wwnn, &vport->fc_nodename, sizeof(phba->wwnn)); 994 memcpy(&phba->wwpn, &vport->fc_portname, sizeof(phba->wwnn)); 995 } 996 997 lpfc_mbuf_free(phba, mp->virt, mp->phys); 998 kfree(mp); 999 mempool_free(pmb, phba->mbox_mem_pool); 1000 return; 1001 1002 out: 1003 pmb->context1 = NULL; 1004 lpfc_mbuf_free(phba, mp->virt, mp->phys); 1005 kfree(mp); 1006 lpfc_issue_clear_la(phba, vport); 1007 mempool_free(pmb, phba->mbox_mem_pool); 1008 return; 1009 } 1010 1011 static void 1012 lpfc_mbx_process_link_up(struct lpfc_hba *phba, READ_LA_VAR *la) 1013 { 1014 struct lpfc_vport *vport = phba->pport; 1015 LPFC_MBOXQ_t *sparam_mbox, *cfglink_mbox; 1016 int i; 1017 struct lpfc_dmabuf *mp; 1018 int rc; 1019 1020 sparam_mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 1021 cfglink_mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 1022 1023 spin_lock_irq(&phba->hbalock); 1024 switch (la->UlnkSpeed) { 1025 case LA_1GHZ_LINK: 1026 phba->fc_linkspeed = LA_1GHZ_LINK; 1027 break; 1028 case LA_2GHZ_LINK: 1029 phba->fc_linkspeed = LA_2GHZ_LINK; 1030 break; 1031 case LA_4GHZ_LINK: 1032 phba->fc_linkspeed = LA_4GHZ_LINK; 1033 break; 1034 case LA_8GHZ_LINK: 1035 phba->fc_linkspeed = LA_8GHZ_LINK; 1036 break; 1037 default: 1038 phba->fc_linkspeed = LA_UNKNW_LINK; 1039 break; 1040 } 1041 1042 phba->fc_topology = la->topology; 1043 phba->link_flag &= ~LS_NPIV_FAB_SUPPORTED; 1044 1045 if (phba->fc_topology == TOPOLOGY_LOOP) { 1046 phba->sli3_options &= ~LPFC_SLI3_NPIV_ENABLED; 1047 1048 if (phba->cfg_enable_npiv) 1049 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT, 1050 "1309 Link Up Event npiv not supported in loop " 1051 "topology\n"); 1052 /* Get Loop Map information */ 1053 if (la->il) 1054 vport->fc_flag |= FC_LBIT; 1055 1056 vport->fc_myDID = la->granted_AL_PA; 1057 i = la->un.lilpBde64.tus.f.bdeSize; 1058 1059 if (i == 0) { 1060 phba->alpa_map[0] = 0; 1061 } else { 1062 if (vport->cfg_log_verbose & LOG_LINK_EVENT) { 1063 int numalpa, j, k; 1064 union { 1065 uint8_t pamap[16]; 1066 struct { 1067 uint32_t wd1; 1068 uint32_t wd2; 1069 uint32_t wd3; 1070 uint32_t wd4; 1071 } pa; 1072 } un; 1073 numalpa = phba->alpa_map[0]; 1074 j = 0; 1075 while (j < numalpa) { 1076 memset(un.pamap, 0, 16); 1077 for (k = 1; j < numalpa; k++) { 1078 un.pamap[k - 1] = 1079 phba->alpa_map[j + 1]; 1080 j++; 1081 if (k == 16) 1082 break; 1083 } 1084 /* Link Up Event ALPA map */ 1085 lpfc_printf_log(phba, 1086 KERN_WARNING, 1087 LOG_LINK_EVENT, 1088 "1304 Link Up Event " 1089 "ALPA map Data: x%x " 1090 "x%x x%x x%x\n", 1091 un.pa.wd1, un.pa.wd2, 1092 un.pa.wd3, un.pa.wd4); 1093 } 1094 } 1095 } 1096 } else { 1097 if (!(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)) { 1098 if (phba->max_vpi && phba->cfg_enable_npiv && 1099 (phba->sli_rev == 3)) 1100 phba->sli3_options |= LPFC_SLI3_NPIV_ENABLED; 1101 } 1102 vport->fc_myDID = phba->fc_pref_DID; 1103 vport->fc_flag |= FC_LBIT; 1104 } 1105 spin_unlock_irq(&phba->hbalock); 1106 1107 lpfc_linkup(phba); 1108 if (sparam_mbox) { 1109 lpfc_read_sparam(phba, sparam_mbox, 0); 1110 sparam_mbox->vport = vport; 1111 sparam_mbox->mbox_cmpl = lpfc_mbx_cmpl_read_sparam; 1112 rc = lpfc_sli_issue_mbox(phba, sparam_mbox, MBX_NOWAIT); 1113 if (rc == MBX_NOT_FINISHED) { 1114 mp = (struct lpfc_dmabuf *) sparam_mbox->context1; 1115 lpfc_mbuf_free(phba, mp->virt, mp->phys); 1116 kfree(mp); 1117 mempool_free(sparam_mbox, phba->mbox_mem_pool); 1118 if (cfglink_mbox) 1119 mempool_free(cfglink_mbox, phba->mbox_mem_pool); 1120 goto out; 1121 } 1122 } 1123 1124 if (cfglink_mbox) { 1125 vport->port_state = LPFC_LOCAL_CFG_LINK; 1126 lpfc_config_link(phba, cfglink_mbox); 1127 cfglink_mbox->vport = vport; 1128 cfglink_mbox->mbox_cmpl = lpfc_mbx_cmpl_local_config_link; 1129 rc = lpfc_sli_issue_mbox(phba, cfglink_mbox, MBX_NOWAIT); 1130 if (rc != MBX_NOT_FINISHED) 1131 return; 1132 mempool_free(cfglink_mbox, phba->mbox_mem_pool); 1133 } 1134 out: 1135 lpfc_vport_set_state(vport, FC_VPORT_FAILED); 1136 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX, 1137 "0263 Discovery Mailbox error: state: 0x%x : %p %p\n", 1138 vport->port_state, sparam_mbox, cfglink_mbox); 1139 lpfc_issue_clear_la(phba, vport); 1140 return; 1141 } 1142 1143 static void 1144 lpfc_enable_la(struct lpfc_hba *phba) 1145 { 1146 uint32_t control; 1147 struct lpfc_sli *psli = &phba->sli; 1148 spin_lock_irq(&phba->hbalock); 1149 psli->sli_flag |= LPFC_PROCESS_LA; 1150 control = readl(phba->HCregaddr); 1151 control |= HC_LAINT_ENA; 1152 writel(control, phba->HCregaddr); 1153 readl(phba->HCregaddr); /* flush */ 1154 spin_unlock_irq(&phba->hbalock); 1155 } 1156 1157 static void 1158 lpfc_mbx_issue_link_down(struct lpfc_hba *phba) 1159 { 1160 lpfc_linkdown(phba); 1161 lpfc_enable_la(phba); 1162 /* turn on Link Attention interrupts - no CLEAR_LA needed */ 1163 } 1164 1165 1166 /* 1167 * This routine handles processing a READ_LA mailbox 1168 * command upon completion. It is setup in the LPFC_MBOXQ 1169 * as the completion routine when the command is 1170 * handed off to the SLI layer. 1171 */ 1172 void 1173 lpfc_mbx_cmpl_read_la(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 1174 { 1175 struct lpfc_vport *vport = pmb->vport; 1176 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 1177 READ_LA_VAR *la; 1178 MAILBOX_t *mb = &pmb->mb; 1179 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1); 1180 1181 /* Unblock ELS traffic */ 1182 phba->sli.ring[LPFC_ELS_RING].flag &= ~LPFC_STOP_IOCB_EVENT; 1183 /* Check for error */ 1184 if (mb->mbxStatus) { 1185 lpfc_printf_log(phba, KERN_INFO, LOG_LINK_EVENT, 1186 "1307 READ_LA mbox error x%x state x%x\n", 1187 mb->mbxStatus, vport->port_state); 1188 lpfc_mbx_issue_link_down(phba); 1189 phba->link_state = LPFC_HBA_ERROR; 1190 goto lpfc_mbx_cmpl_read_la_free_mbuf; 1191 } 1192 1193 la = (READ_LA_VAR *) & pmb->mb.un.varReadLA; 1194 1195 memcpy(&phba->alpa_map[0], mp->virt, 128); 1196 1197 spin_lock_irq(shost->host_lock); 1198 if (la->pb) 1199 vport->fc_flag |= FC_BYPASSED_MODE; 1200 else 1201 vport->fc_flag &= ~FC_BYPASSED_MODE; 1202 spin_unlock_irq(shost->host_lock); 1203 1204 if (((phba->fc_eventTag + 1) < la->eventTag) || 1205 (phba->fc_eventTag == la->eventTag)) { 1206 phba->fc_stat.LinkMultiEvent++; 1207 if (la->attType == AT_LINK_UP) 1208 if (phba->fc_eventTag != 0) 1209 lpfc_linkdown(phba); 1210 } 1211 1212 phba->fc_eventTag = la->eventTag; 1213 if (la->mm) 1214 phba->sli.sli_flag |= LPFC_MENLO_MAINT; 1215 else 1216 phba->sli.sli_flag &= ~LPFC_MENLO_MAINT; 1217 1218 if (la->attType == AT_LINK_UP && (!la->mm)) { 1219 phba->fc_stat.LinkUp++; 1220 if (phba->link_flag & LS_LOOPBACK_MODE) { 1221 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT, 1222 "1306 Link Up Event in loop back mode " 1223 "x%x received Data: x%x x%x x%x x%x\n", 1224 la->eventTag, phba->fc_eventTag, 1225 la->granted_AL_PA, la->UlnkSpeed, 1226 phba->alpa_map[0]); 1227 } else { 1228 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT, 1229 "1303 Link Up Event x%x received " 1230 "Data: x%x x%x x%x x%x x%x x%x %d\n", 1231 la->eventTag, phba->fc_eventTag, 1232 la->granted_AL_PA, la->UlnkSpeed, 1233 phba->alpa_map[0], 1234 la->mm, la->fa, 1235 phba->wait_4_mlo_maint_flg); 1236 } 1237 lpfc_mbx_process_link_up(phba, la); 1238 } else if (la->attType == AT_LINK_DOWN) { 1239 phba->fc_stat.LinkDown++; 1240 if (phba->link_flag & LS_LOOPBACK_MODE) { 1241 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT, 1242 "1308 Link Down Event in loop back mode " 1243 "x%x received " 1244 "Data: x%x x%x x%x\n", 1245 la->eventTag, phba->fc_eventTag, 1246 phba->pport->port_state, vport->fc_flag); 1247 } 1248 else { 1249 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT, 1250 "1305 Link Down Event x%x received " 1251 "Data: x%x x%x x%x x%x x%x\n", 1252 la->eventTag, phba->fc_eventTag, 1253 phba->pport->port_state, vport->fc_flag, 1254 la->mm, la->fa); 1255 } 1256 lpfc_mbx_issue_link_down(phba); 1257 } 1258 if (la->mm && la->attType == AT_LINK_UP) { 1259 if (phba->link_state != LPFC_LINK_DOWN) { 1260 phba->fc_stat.LinkDown++; 1261 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT, 1262 "1312 Link Down Event x%x received " 1263 "Data: x%x x%x x%x\n", 1264 la->eventTag, phba->fc_eventTag, 1265 phba->pport->port_state, vport->fc_flag); 1266 lpfc_mbx_issue_link_down(phba); 1267 } else 1268 lpfc_enable_la(phba); 1269 1270 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT, 1271 "1310 Menlo Maint Mode Link up Event x%x rcvd " 1272 "Data: x%x x%x x%x\n", 1273 la->eventTag, phba->fc_eventTag, 1274 phba->pport->port_state, vport->fc_flag); 1275 /* 1276 * The cmnd that triggered this will be waiting for this 1277 * signal. 1278 */ 1279 /* WAKEUP for MENLO_SET_MODE or MENLO_RESET command. */ 1280 if (phba->wait_4_mlo_maint_flg) { 1281 phba->wait_4_mlo_maint_flg = 0; 1282 wake_up_interruptible(&phba->wait_4_mlo_m_q); 1283 } 1284 } 1285 1286 if (la->fa) { 1287 if (la->mm) 1288 lpfc_issue_clear_la(phba, vport); 1289 lpfc_printf_log(phba, KERN_INFO, LOG_LINK_EVENT, 1290 "1311 fa %d\n", la->fa); 1291 } 1292 1293 lpfc_mbx_cmpl_read_la_free_mbuf: 1294 lpfc_mbuf_free(phba, mp->virt, mp->phys); 1295 kfree(mp); 1296 mempool_free(pmb, phba->mbox_mem_pool); 1297 return; 1298 } 1299 1300 /* 1301 * This routine handles processing a REG_LOGIN mailbox 1302 * command upon completion. It is setup in the LPFC_MBOXQ 1303 * as the completion routine when the command is 1304 * handed off to the SLI layer. 1305 */ 1306 void 1307 lpfc_mbx_cmpl_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 1308 { 1309 struct lpfc_vport *vport = pmb->vport; 1310 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1); 1311 struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) pmb->context2; 1312 1313 pmb->context1 = NULL; 1314 1315 /* Good status, call state machine */ 1316 lpfc_disc_state_machine(vport, ndlp, pmb, NLP_EVT_CMPL_REG_LOGIN); 1317 lpfc_mbuf_free(phba, mp->virt, mp->phys); 1318 kfree(mp); 1319 mempool_free(pmb, phba->mbox_mem_pool); 1320 /* decrement the node reference count held for this callback 1321 * function. 1322 */ 1323 lpfc_nlp_put(ndlp); 1324 1325 return; 1326 } 1327 1328 static void 1329 lpfc_mbx_cmpl_unreg_vpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 1330 { 1331 MAILBOX_t *mb = &pmb->mb; 1332 struct lpfc_vport *vport = pmb->vport; 1333 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 1334 1335 switch (mb->mbxStatus) { 1336 case 0x0011: 1337 case 0x0020: 1338 case 0x9700: 1339 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE, 1340 "0911 cmpl_unreg_vpi, mb status = 0x%x\n", 1341 mb->mbxStatus); 1342 break; 1343 } 1344 vport->unreg_vpi_cmpl = VPORT_OK; 1345 mempool_free(pmb, phba->mbox_mem_pool); 1346 /* 1347 * This shost reference might have been taken at the beginning of 1348 * lpfc_vport_delete() 1349 */ 1350 if (vport->load_flag & FC_UNLOADING) 1351 scsi_host_put(shost); 1352 } 1353 1354 int 1355 lpfc_mbx_unreg_vpi(struct lpfc_vport *vport) 1356 { 1357 struct lpfc_hba *phba = vport->phba; 1358 LPFC_MBOXQ_t *mbox; 1359 int rc; 1360 1361 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 1362 if (!mbox) 1363 return 1; 1364 1365 lpfc_unreg_vpi(phba, vport->vpi, mbox); 1366 mbox->vport = vport; 1367 mbox->mbox_cmpl = lpfc_mbx_cmpl_unreg_vpi; 1368 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT); 1369 if (rc == MBX_NOT_FINISHED) { 1370 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX | LOG_VPORT, 1371 "1800 Could not issue unreg_vpi\n"); 1372 mempool_free(mbox, phba->mbox_mem_pool); 1373 vport->unreg_vpi_cmpl = VPORT_ERROR; 1374 return rc; 1375 } 1376 return 0; 1377 } 1378 1379 static void 1380 lpfc_mbx_cmpl_reg_vpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 1381 { 1382 struct lpfc_vport *vport = pmb->vport; 1383 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 1384 MAILBOX_t *mb = &pmb->mb; 1385 1386 switch (mb->mbxStatus) { 1387 case 0x0011: 1388 case 0x9601: 1389 case 0x9602: 1390 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE, 1391 "0912 cmpl_reg_vpi, mb status = 0x%x\n", 1392 mb->mbxStatus); 1393 lpfc_vport_set_state(vport, FC_VPORT_FAILED); 1394 spin_lock_irq(shost->host_lock); 1395 vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP); 1396 spin_unlock_irq(shost->host_lock); 1397 vport->fc_myDID = 0; 1398 goto out; 1399 } 1400 1401 vport->num_disc_nodes = 0; 1402 /* go thru NPR list and issue ELS PLOGIs */ 1403 if (vport->fc_npr_cnt) 1404 lpfc_els_disc_plogi(vport); 1405 1406 if (!vport->num_disc_nodes) { 1407 spin_lock_irq(shost->host_lock); 1408 vport->fc_flag &= ~FC_NDISC_ACTIVE; 1409 spin_unlock_irq(shost->host_lock); 1410 lpfc_can_disctmo(vport); 1411 } 1412 vport->port_state = LPFC_VPORT_READY; 1413 1414 out: 1415 mempool_free(pmb, phba->mbox_mem_pool); 1416 return; 1417 } 1418 1419 /* 1420 * This routine handles processing a Fabric REG_LOGIN mailbox 1421 * command upon completion. It is setup in the LPFC_MBOXQ 1422 * as the completion routine when the command is 1423 * handed off to the SLI layer. 1424 */ 1425 void 1426 lpfc_mbx_cmpl_fabric_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 1427 { 1428 struct lpfc_vport *vport = pmb->vport; 1429 MAILBOX_t *mb = &pmb->mb; 1430 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1); 1431 struct lpfc_nodelist *ndlp; 1432 struct lpfc_vport **vports; 1433 int i; 1434 1435 ndlp = (struct lpfc_nodelist *) pmb->context2; 1436 pmb->context1 = NULL; 1437 pmb->context2 = NULL; 1438 if (mb->mbxStatus) { 1439 lpfc_mbuf_free(phba, mp->virt, mp->phys); 1440 kfree(mp); 1441 mempool_free(pmb, phba->mbox_mem_pool); 1442 1443 if (phba->fc_topology == TOPOLOGY_LOOP) { 1444 /* FLOGI failed, use loop map to make discovery list */ 1445 lpfc_disc_list_loopmap(vport); 1446 1447 /* Start discovery */ 1448 lpfc_disc_start(vport); 1449 /* Decrement the reference count to ndlp after the 1450 * reference to the ndlp are done. 1451 */ 1452 lpfc_nlp_put(ndlp); 1453 return; 1454 } 1455 1456 lpfc_vport_set_state(vport, FC_VPORT_FAILED); 1457 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX, 1458 "0258 Register Fabric login error: 0x%x\n", 1459 mb->mbxStatus); 1460 /* Decrement the reference count to ndlp after the reference 1461 * to the ndlp are done. 1462 */ 1463 lpfc_nlp_put(ndlp); 1464 return; 1465 } 1466 1467 ndlp->nlp_rpi = mb->un.varWords[0]; 1468 ndlp->nlp_type |= NLP_FABRIC; 1469 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE); 1470 1471 if (vport->port_state == LPFC_FABRIC_CFG_LINK) { 1472 vports = lpfc_create_vport_work_array(phba); 1473 if (vports != NULL) 1474 for(i = 0; 1475 i <= phba->max_vpi && vports[i] != NULL; 1476 i++) { 1477 if (vports[i]->port_type == LPFC_PHYSICAL_PORT) 1478 continue; 1479 if (phba->fc_topology == TOPOLOGY_LOOP) { 1480 lpfc_vport_set_state(vports[i], 1481 FC_VPORT_LINKDOWN); 1482 continue; 1483 } 1484 if (phba->link_flag & LS_NPIV_FAB_SUPPORTED) 1485 lpfc_initial_fdisc(vports[i]); 1486 else { 1487 lpfc_vport_set_state(vports[i], 1488 FC_VPORT_NO_FABRIC_SUPP); 1489 lpfc_printf_vlog(vport, KERN_ERR, 1490 LOG_ELS, 1491 "0259 No NPIV " 1492 "Fabric support\n"); 1493 } 1494 } 1495 lpfc_destroy_vport_work_array(phba, vports); 1496 lpfc_do_scr_ns_plogi(phba, vport); 1497 } 1498 1499 lpfc_mbuf_free(phba, mp->virt, mp->phys); 1500 kfree(mp); 1501 mempool_free(pmb, phba->mbox_mem_pool); 1502 1503 /* Drop the reference count from the mbox at the end after 1504 * all the current reference to the ndlp have been done. 1505 */ 1506 lpfc_nlp_put(ndlp); 1507 return; 1508 } 1509 1510 /* 1511 * This routine handles processing a NameServer REG_LOGIN mailbox 1512 * command upon completion. It is setup in the LPFC_MBOXQ 1513 * as the completion routine when the command is 1514 * handed off to the SLI layer. 1515 */ 1516 void 1517 lpfc_mbx_cmpl_ns_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 1518 { 1519 MAILBOX_t *mb = &pmb->mb; 1520 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1); 1521 struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) pmb->context2; 1522 struct lpfc_vport *vport = pmb->vport; 1523 1524 if (mb->mbxStatus) { 1525 out: 1526 /* decrement the node reference count held for this 1527 * callback function. 1528 */ 1529 lpfc_nlp_put(ndlp); 1530 lpfc_mbuf_free(phba, mp->virt, mp->phys); 1531 kfree(mp); 1532 mempool_free(pmb, phba->mbox_mem_pool); 1533 1534 /* If no other thread is using the ndlp, free it */ 1535 lpfc_nlp_not_used(ndlp); 1536 1537 if (phba->fc_topology == TOPOLOGY_LOOP) { 1538 /* 1539 * RegLogin failed, use loop map to make discovery 1540 * list 1541 */ 1542 lpfc_disc_list_loopmap(vport); 1543 1544 /* Start discovery */ 1545 lpfc_disc_start(vport); 1546 return; 1547 } 1548 lpfc_vport_set_state(vport, FC_VPORT_FAILED); 1549 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS, 1550 "0260 Register NameServer error: 0x%x\n", 1551 mb->mbxStatus); 1552 return; 1553 } 1554 1555 pmb->context1 = NULL; 1556 1557 ndlp->nlp_rpi = mb->un.varWords[0]; 1558 ndlp->nlp_type |= NLP_FABRIC; 1559 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE); 1560 1561 if (vport->port_state < LPFC_VPORT_READY) { 1562 /* Link up discovery requires Fabric registration. */ 1563 lpfc_ns_cmd(vport, SLI_CTNS_RFF_ID, 0, 0); /* Do this first! */ 1564 lpfc_ns_cmd(vport, SLI_CTNS_RNN_ID, 0, 0); 1565 lpfc_ns_cmd(vport, SLI_CTNS_RSNN_NN, 0, 0); 1566 lpfc_ns_cmd(vport, SLI_CTNS_RSPN_ID, 0, 0); 1567 lpfc_ns_cmd(vport, SLI_CTNS_RFT_ID, 0, 0); 1568 1569 /* Issue SCR just before NameServer GID_FT Query */ 1570 lpfc_issue_els_scr(vport, SCR_DID, 0); 1571 } 1572 1573 vport->fc_ns_retry = 0; 1574 /* Good status, issue CT Request to NameServer */ 1575 if (lpfc_ns_cmd(vport, SLI_CTNS_GID_FT, 0, 0)) { 1576 /* Cannot issue NameServer Query, so finish up discovery */ 1577 goto out; 1578 } 1579 1580 /* decrement the node reference count held for this 1581 * callback function. 1582 */ 1583 lpfc_nlp_put(ndlp); 1584 lpfc_mbuf_free(phba, mp->virt, mp->phys); 1585 kfree(mp); 1586 mempool_free(pmb, phba->mbox_mem_pool); 1587 1588 return; 1589 } 1590 1591 static void 1592 lpfc_register_remote_port(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) 1593 { 1594 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 1595 struct fc_rport *rport; 1596 struct lpfc_rport_data *rdata; 1597 struct fc_rport_identifiers rport_ids; 1598 struct lpfc_hba *phba = vport->phba; 1599 1600 /* Remote port has reappeared. Re-register w/ FC transport */ 1601 rport_ids.node_name = wwn_to_u64(ndlp->nlp_nodename.u.wwn); 1602 rport_ids.port_name = wwn_to_u64(ndlp->nlp_portname.u.wwn); 1603 rport_ids.port_id = ndlp->nlp_DID; 1604 rport_ids.roles = FC_RPORT_ROLE_UNKNOWN; 1605 1606 /* 1607 * We leave our node pointer in rport->dd_data when we unregister a 1608 * FCP target port. But fc_remote_port_add zeros the space to which 1609 * rport->dd_data points. So, if we're reusing a previously 1610 * registered port, drop the reference that we took the last time we 1611 * registered the port. 1612 */ 1613 if (ndlp->rport && ndlp->rport->dd_data && 1614 ((struct lpfc_rport_data *) ndlp->rport->dd_data)->pnode == ndlp) 1615 lpfc_nlp_put(ndlp); 1616 1617 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT, 1618 "rport add: did:x%x flg:x%x type x%x", 1619 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type); 1620 1621 ndlp->rport = rport = fc_remote_port_add(shost, 0, &rport_ids); 1622 if (!rport || !get_device(&rport->dev)) { 1623 dev_printk(KERN_WARNING, &phba->pcidev->dev, 1624 "Warning: fc_remote_port_add failed\n"); 1625 return; 1626 } 1627 1628 /* initialize static port data */ 1629 rport->maxframe_size = ndlp->nlp_maxframe; 1630 rport->supported_classes = ndlp->nlp_class_sup; 1631 rdata = rport->dd_data; 1632 rdata->pnode = lpfc_nlp_get(ndlp); 1633 1634 if (ndlp->nlp_type & NLP_FCP_TARGET) 1635 rport_ids.roles |= FC_RPORT_ROLE_FCP_TARGET; 1636 if (ndlp->nlp_type & NLP_FCP_INITIATOR) 1637 rport_ids.roles |= FC_RPORT_ROLE_FCP_INITIATOR; 1638 1639 1640 if (rport_ids.roles != FC_RPORT_ROLE_UNKNOWN) 1641 fc_remote_port_rolechg(rport, rport_ids.roles); 1642 1643 if ((rport->scsi_target_id != -1) && 1644 (rport->scsi_target_id < LPFC_MAX_TARGET)) { 1645 ndlp->nlp_sid = rport->scsi_target_id; 1646 } 1647 return; 1648 } 1649 1650 static void 1651 lpfc_unregister_remote_port(struct lpfc_nodelist *ndlp) 1652 { 1653 struct fc_rport *rport = ndlp->rport; 1654 1655 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_RPORT, 1656 "rport delete: did:x%x flg:x%x type x%x", 1657 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type); 1658 1659 fc_remote_port_delete(rport); 1660 1661 return; 1662 } 1663 1664 static void 1665 lpfc_nlp_counters(struct lpfc_vport *vport, int state, int count) 1666 { 1667 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 1668 1669 spin_lock_irq(shost->host_lock); 1670 switch (state) { 1671 case NLP_STE_UNUSED_NODE: 1672 vport->fc_unused_cnt += count; 1673 break; 1674 case NLP_STE_PLOGI_ISSUE: 1675 vport->fc_plogi_cnt += count; 1676 break; 1677 case NLP_STE_ADISC_ISSUE: 1678 vport->fc_adisc_cnt += count; 1679 break; 1680 case NLP_STE_REG_LOGIN_ISSUE: 1681 vport->fc_reglogin_cnt += count; 1682 break; 1683 case NLP_STE_PRLI_ISSUE: 1684 vport->fc_prli_cnt += count; 1685 break; 1686 case NLP_STE_UNMAPPED_NODE: 1687 vport->fc_unmap_cnt += count; 1688 break; 1689 case NLP_STE_MAPPED_NODE: 1690 vport->fc_map_cnt += count; 1691 break; 1692 case NLP_STE_NPR_NODE: 1693 vport->fc_npr_cnt += count; 1694 break; 1695 } 1696 spin_unlock_irq(shost->host_lock); 1697 } 1698 1699 static void 1700 lpfc_nlp_state_cleanup(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 1701 int old_state, int new_state) 1702 { 1703 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 1704 1705 if (new_state == NLP_STE_UNMAPPED_NODE) { 1706 ndlp->nlp_type &= ~(NLP_FCP_TARGET | NLP_FCP_INITIATOR); 1707 ndlp->nlp_flag &= ~NLP_NODEV_REMOVE; 1708 ndlp->nlp_type |= NLP_FC_NODE; 1709 } 1710 if (new_state == NLP_STE_MAPPED_NODE) 1711 ndlp->nlp_flag &= ~NLP_NODEV_REMOVE; 1712 if (new_state == NLP_STE_NPR_NODE) 1713 ndlp->nlp_flag &= ~NLP_RCV_PLOGI; 1714 1715 /* Transport interface */ 1716 if (ndlp->rport && (old_state == NLP_STE_MAPPED_NODE || 1717 old_state == NLP_STE_UNMAPPED_NODE)) { 1718 vport->phba->nport_event_cnt++; 1719 lpfc_unregister_remote_port(ndlp); 1720 } 1721 1722 if (new_state == NLP_STE_MAPPED_NODE || 1723 new_state == NLP_STE_UNMAPPED_NODE) { 1724 vport->phba->nport_event_cnt++; 1725 /* 1726 * Tell the fc transport about the port, if we haven't 1727 * already. If we have, and it's a scsi entity, be 1728 * sure to unblock any attached scsi devices 1729 */ 1730 lpfc_register_remote_port(vport, ndlp); 1731 } 1732 if ((new_state == NLP_STE_MAPPED_NODE) && 1733 (vport->stat_data_enabled)) { 1734 /* 1735 * A new target is discovered, if there is no buffer for 1736 * statistical data collection allocate buffer. 1737 */ 1738 ndlp->lat_data = kcalloc(LPFC_MAX_BUCKET_COUNT, 1739 sizeof(struct lpfc_scsicmd_bkt), 1740 GFP_KERNEL); 1741 1742 if (!ndlp->lat_data) 1743 lpfc_printf_vlog(vport, KERN_ERR, LOG_NODE, 1744 "0286 lpfc_nlp_state_cleanup failed to " 1745 "allocate statistical data buffer DID " 1746 "0x%x\n", ndlp->nlp_DID); 1747 } 1748 /* 1749 * if we added to Mapped list, but the remote port 1750 * registration failed or assigned a target id outside 1751 * our presentable range - move the node to the 1752 * Unmapped List 1753 */ 1754 if (new_state == NLP_STE_MAPPED_NODE && 1755 (!ndlp->rport || 1756 ndlp->rport->scsi_target_id == -1 || 1757 ndlp->rport->scsi_target_id >= LPFC_MAX_TARGET)) { 1758 spin_lock_irq(shost->host_lock); 1759 ndlp->nlp_flag |= NLP_TGT_NO_SCSIID; 1760 spin_unlock_irq(shost->host_lock); 1761 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE); 1762 } 1763 } 1764 1765 static char * 1766 lpfc_nlp_state_name(char *buffer, size_t size, int state) 1767 { 1768 static char *states[] = { 1769 [NLP_STE_UNUSED_NODE] = "UNUSED", 1770 [NLP_STE_PLOGI_ISSUE] = "PLOGI", 1771 [NLP_STE_ADISC_ISSUE] = "ADISC", 1772 [NLP_STE_REG_LOGIN_ISSUE] = "REGLOGIN", 1773 [NLP_STE_PRLI_ISSUE] = "PRLI", 1774 [NLP_STE_UNMAPPED_NODE] = "UNMAPPED", 1775 [NLP_STE_MAPPED_NODE] = "MAPPED", 1776 [NLP_STE_NPR_NODE] = "NPR", 1777 }; 1778 1779 if (state < NLP_STE_MAX_STATE && states[state]) 1780 strlcpy(buffer, states[state], size); 1781 else 1782 snprintf(buffer, size, "unknown (%d)", state); 1783 return buffer; 1784 } 1785 1786 void 1787 lpfc_nlp_set_state(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 1788 int state) 1789 { 1790 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 1791 int old_state = ndlp->nlp_state; 1792 char name1[16], name2[16]; 1793 1794 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE, 1795 "0904 NPort state transition x%06x, %s -> %s\n", 1796 ndlp->nlp_DID, 1797 lpfc_nlp_state_name(name1, sizeof(name1), old_state), 1798 lpfc_nlp_state_name(name2, sizeof(name2), state)); 1799 1800 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE, 1801 "node statechg did:x%x old:%d ste:%d", 1802 ndlp->nlp_DID, old_state, state); 1803 1804 if (old_state == NLP_STE_NPR_NODE && 1805 state != NLP_STE_NPR_NODE) 1806 lpfc_cancel_retry_delay_tmo(vport, ndlp); 1807 if (old_state == NLP_STE_UNMAPPED_NODE) { 1808 ndlp->nlp_flag &= ~NLP_TGT_NO_SCSIID; 1809 ndlp->nlp_type &= ~NLP_FC_NODE; 1810 } 1811 1812 if (list_empty(&ndlp->nlp_listp)) { 1813 spin_lock_irq(shost->host_lock); 1814 list_add_tail(&ndlp->nlp_listp, &vport->fc_nodes); 1815 spin_unlock_irq(shost->host_lock); 1816 } else if (old_state) 1817 lpfc_nlp_counters(vport, old_state, -1); 1818 1819 ndlp->nlp_state = state; 1820 lpfc_nlp_counters(vport, state, 1); 1821 lpfc_nlp_state_cleanup(vport, ndlp, old_state, state); 1822 } 1823 1824 void 1825 lpfc_enqueue_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) 1826 { 1827 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 1828 1829 if (list_empty(&ndlp->nlp_listp)) { 1830 spin_lock_irq(shost->host_lock); 1831 list_add_tail(&ndlp->nlp_listp, &vport->fc_nodes); 1832 spin_unlock_irq(shost->host_lock); 1833 } 1834 } 1835 1836 void 1837 lpfc_dequeue_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) 1838 { 1839 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 1840 1841 lpfc_cancel_retry_delay_tmo(vport, ndlp); 1842 if (ndlp->nlp_state && !list_empty(&ndlp->nlp_listp)) 1843 lpfc_nlp_counters(vport, ndlp->nlp_state, -1); 1844 spin_lock_irq(shost->host_lock); 1845 list_del_init(&ndlp->nlp_listp); 1846 spin_unlock_irq(shost->host_lock); 1847 lpfc_nlp_state_cleanup(vport, ndlp, ndlp->nlp_state, 1848 NLP_STE_UNUSED_NODE); 1849 } 1850 1851 static void 1852 lpfc_disable_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) 1853 { 1854 lpfc_cancel_retry_delay_tmo(vport, ndlp); 1855 if (ndlp->nlp_state && !list_empty(&ndlp->nlp_listp)) 1856 lpfc_nlp_counters(vport, ndlp->nlp_state, -1); 1857 lpfc_nlp_state_cleanup(vport, ndlp, ndlp->nlp_state, 1858 NLP_STE_UNUSED_NODE); 1859 } 1860 /** 1861 * lpfc_initialize_node: Initialize all fields of node object. 1862 * @vport: Pointer to Virtual Port object. 1863 * @ndlp: Pointer to FC node object. 1864 * @did: FC_ID of the node. 1865 * This function is always called when node object need to 1866 * be initialized. It initializes all the fields of the node 1867 * object. 1868 **/ 1869 static inline void 1870 lpfc_initialize_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 1871 uint32_t did) 1872 { 1873 INIT_LIST_HEAD(&ndlp->els_retry_evt.evt_listp); 1874 INIT_LIST_HEAD(&ndlp->dev_loss_evt.evt_listp); 1875 init_timer(&ndlp->nlp_delayfunc); 1876 ndlp->nlp_delayfunc.function = lpfc_els_retry_delay; 1877 ndlp->nlp_delayfunc.data = (unsigned long)ndlp; 1878 ndlp->nlp_DID = did; 1879 ndlp->vport = vport; 1880 ndlp->nlp_sid = NLP_NO_SID; 1881 kref_init(&ndlp->kref); 1882 NLP_INT_NODE_ACT(ndlp); 1883 atomic_set(&ndlp->cmd_pending, 0); 1884 ndlp->cmd_qdepth = LPFC_MAX_TGT_QDEPTH; 1885 } 1886 1887 struct lpfc_nodelist * 1888 lpfc_enable_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 1889 int state) 1890 { 1891 struct lpfc_hba *phba = vport->phba; 1892 uint32_t did; 1893 unsigned long flags; 1894 1895 if (!ndlp) 1896 return NULL; 1897 1898 spin_lock_irqsave(&phba->ndlp_lock, flags); 1899 /* The ndlp should not be in memory free mode */ 1900 if (NLP_CHK_FREE_REQ(ndlp)) { 1901 spin_unlock_irqrestore(&phba->ndlp_lock, flags); 1902 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NODE, 1903 "0277 lpfc_enable_node: ndlp:x%p " 1904 "usgmap:x%x refcnt:%d\n", 1905 (void *)ndlp, ndlp->nlp_usg_map, 1906 atomic_read(&ndlp->kref.refcount)); 1907 return NULL; 1908 } 1909 /* The ndlp should not already be in active mode */ 1910 if (NLP_CHK_NODE_ACT(ndlp)) { 1911 spin_unlock_irqrestore(&phba->ndlp_lock, flags); 1912 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NODE, 1913 "0278 lpfc_enable_node: ndlp:x%p " 1914 "usgmap:x%x refcnt:%d\n", 1915 (void *)ndlp, ndlp->nlp_usg_map, 1916 atomic_read(&ndlp->kref.refcount)); 1917 return NULL; 1918 } 1919 1920 /* Keep the original DID */ 1921 did = ndlp->nlp_DID; 1922 1923 /* re-initialize ndlp except of ndlp linked list pointer */ 1924 memset((((char *)ndlp) + sizeof (struct list_head)), 0, 1925 sizeof (struct lpfc_nodelist) - sizeof (struct list_head)); 1926 lpfc_initialize_node(vport, ndlp, did); 1927 1928 spin_unlock_irqrestore(&phba->ndlp_lock, flags); 1929 1930 if (state != NLP_STE_UNUSED_NODE) 1931 lpfc_nlp_set_state(vport, ndlp, state); 1932 1933 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE, 1934 "node enable: did:x%x", 1935 ndlp->nlp_DID, 0, 0); 1936 return ndlp; 1937 } 1938 1939 void 1940 lpfc_drop_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) 1941 { 1942 /* 1943 * Use of lpfc_drop_node and UNUSED list: lpfc_drop_node should 1944 * be used if we wish to issue the "last" lpfc_nlp_put() to remove 1945 * the ndlp from the vport. The ndlp marked as UNUSED on the list 1946 * until ALL other outstanding threads have completed. We check 1947 * that the ndlp not already in the UNUSED state before we proceed. 1948 */ 1949 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE) 1950 return; 1951 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNUSED_NODE); 1952 lpfc_nlp_put(ndlp); 1953 return; 1954 } 1955 1956 /* 1957 * Start / ReStart rescue timer for Discovery / RSCN handling 1958 */ 1959 void 1960 lpfc_set_disctmo(struct lpfc_vport *vport) 1961 { 1962 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 1963 struct lpfc_hba *phba = vport->phba; 1964 uint32_t tmo; 1965 1966 if (vport->port_state == LPFC_LOCAL_CFG_LINK) { 1967 /* For FAN, timeout should be greater than edtov */ 1968 tmo = (((phba->fc_edtov + 999) / 1000) + 1); 1969 } else { 1970 /* Normal discovery timeout should be > than ELS/CT timeout 1971 * FC spec states we need 3 * ratov for CT requests 1972 */ 1973 tmo = ((phba->fc_ratov * 3) + 3); 1974 } 1975 1976 1977 if (!timer_pending(&vport->fc_disctmo)) { 1978 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, 1979 "set disc timer: tmo:x%x state:x%x flg:x%x", 1980 tmo, vport->port_state, vport->fc_flag); 1981 } 1982 1983 mod_timer(&vport->fc_disctmo, jiffies + HZ * tmo); 1984 spin_lock_irq(shost->host_lock); 1985 vport->fc_flag |= FC_DISC_TMO; 1986 spin_unlock_irq(shost->host_lock); 1987 1988 /* Start Discovery Timer state <hba_state> */ 1989 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, 1990 "0247 Start Discovery Timer state x%x " 1991 "Data: x%x x%lx x%x x%x\n", 1992 vport->port_state, tmo, 1993 (unsigned long)&vport->fc_disctmo, vport->fc_plogi_cnt, 1994 vport->fc_adisc_cnt); 1995 1996 return; 1997 } 1998 1999 /* 2000 * Cancel rescue timer for Discovery / RSCN handling 2001 */ 2002 int 2003 lpfc_can_disctmo(struct lpfc_vport *vport) 2004 { 2005 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 2006 unsigned long iflags; 2007 2008 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, 2009 "can disc timer: state:x%x rtry:x%x flg:x%x", 2010 vport->port_state, vport->fc_ns_retry, vport->fc_flag); 2011 2012 /* Turn off discovery timer if its running */ 2013 if (vport->fc_flag & FC_DISC_TMO) { 2014 spin_lock_irqsave(shost->host_lock, iflags); 2015 vport->fc_flag &= ~FC_DISC_TMO; 2016 spin_unlock_irqrestore(shost->host_lock, iflags); 2017 del_timer_sync(&vport->fc_disctmo); 2018 spin_lock_irqsave(&vport->work_port_lock, iflags); 2019 vport->work_port_events &= ~WORKER_DISC_TMO; 2020 spin_unlock_irqrestore(&vport->work_port_lock, iflags); 2021 } 2022 2023 /* Cancel Discovery Timer state <hba_state> */ 2024 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, 2025 "0248 Cancel Discovery Timer state x%x " 2026 "Data: x%x x%x x%x\n", 2027 vport->port_state, vport->fc_flag, 2028 vport->fc_plogi_cnt, vport->fc_adisc_cnt); 2029 return 0; 2030 } 2031 2032 /* 2033 * Check specified ring for outstanding IOCB on the SLI queue 2034 * Return true if iocb matches the specified nport 2035 */ 2036 int 2037 lpfc_check_sli_ndlp(struct lpfc_hba *phba, 2038 struct lpfc_sli_ring *pring, 2039 struct lpfc_iocbq *iocb, 2040 struct lpfc_nodelist *ndlp) 2041 { 2042 struct lpfc_sli *psli = &phba->sli; 2043 IOCB_t *icmd = &iocb->iocb; 2044 struct lpfc_vport *vport = ndlp->vport; 2045 2046 if (iocb->vport != vport) 2047 return 0; 2048 2049 if (pring->ringno == LPFC_ELS_RING) { 2050 switch (icmd->ulpCommand) { 2051 case CMD_GEN_REQUEST64_CR: 2052 if (icmd->ulpContext == (volatile ushort)ndlp->nlp_rpi) 2053 return 1; 2054 case CMD_ELS_REQUEST64_CR: 2055 if (icmd->un.elsreq64.remoteID == ndlp->nlp_DID) 2056 return 1; 2057 case CMD_XMIT_ELS_RSP64_CX: 2058 if (iocb->context1 == (uint8_t *) ndlp) 2059 return 1; 2060 } 2061 } else if (pring->ringno == psli->extra_ring) { 2062 2063 } else if (pring->ringno == psli->fcp_ring) { 2064 /* Skip match check if waiting to relogin to FCP target */ 2065 if ((ndlp->nlp_type & NLP_FCP_TARGET) && 2066 (ndlp->nlp_flag & NLP_DELAY_TMO)) { 2067 return 0; 2068 } 2069 if (icmd->ulpContext == (volatile ushort)ndlp->nlp_rpi) { 2070 return 1; 2071 } 2072 } else if (pring->ringno == psli->next_ring) { 2073 2074 } 2075 return 0; 2076 } 2077 2078 /* 2079 * Free resources / clean up outstanding I/Os 2080 * associated with nlp_rpi in the LPFC_NODELIST entry. 2081 */ 2082 static int 2083 lpfc_no_rpi(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp) 2084 { 2085 LIST_HEAD(completions); 2086 struct lpfc_sli *psli; 2087 struct lpfc_sli_ring *pring; 2088 struct lpfc_iocbq *iocb, *next_iocb; 2089 IOCB_t *icmd; 2090 uint32_t rpi, i; 2091 2092 lpfc_fabric_abort_nport(ndlp); 2093 2094 /* 2095 * Everything that matches on txcmplq will be returned 2096 * by firmware with a no rpi error. 2097 */ 2098 psli = &phba->sli; 2099 rpi = ndlp->nlp_rpi; 2100 if (rpi) { 2101 /* Now process each ring */ 2102 for (i = 0; i < psli->num_rings; i++) { 2103 pring = &psli->ring[i]; 2104 2105 spin_lock_irq(&phba->hbalock); 2106 list_for_each_entry_safe(iocb, next_iocb, &pring->txq, 2107 list) { 2108 /* 2109 * Check to see if iocb matches the nport we are 2110 * looking for 2111 */ 2112 if ((lpfc_check_sli_ndlp(phba, pring, iocb, 2113 ndlp))) { 2114 /* It matches, so deque and call compl 2115 with an error */ 2116 list_move_tail(&iocb->list, 2117 &completions); 2118 pring->txq_cnt--; 2119 } 2120 } 2121 spin_unlock_irq(&phba->hbalock); 2122 } 2123 } 2124 2125 while (!list_empty(&completions)) { 2126 iocb = list_get_first(&completions, struct lpfc_iocbq, list); 2127 list_del_init(&iocb->list); 2128 2129 if (!iocb->iocb_cmpl) 2130 lpfc_sli_release_iocbq(phba, iocb); 2131 else { 2132 icmd = &iocb->iocb; 2133 icmd->ulpStatus = IOSTAT_LOCAL_REJECT; 2134 icmd->un.ulpWord[4] = IOERR_SLI_ABORTED; 2135 (iocb->iocb_cmpl)(phba, iocb, iocb); 2136 } 2137 } 2138 2139 return 0; 2140 } 2141 2142 /* 2143 * Free rpi associated with LPFC_NODELIST entry. 2144 * This routine is called from lpfc_freenode(), when we are removing 2145 * a LPFC_NODELIST entry. It is also called if the driver initiates a 2146 * LOGO that completes successfully, and we are waiting to PLOGI back 2147 * to the remote NPort. In addition, it is called after we receive 2148 * and unsolicated ELS cmd, send back a rsp, the rsp completes and 2149 * we are waiting to PLOGI back to the remote NPort. 2150 */ 2151 int 2152 lpfc_unreg_rpi(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) 2153 { 2154 struct lpfc_hba *phba = vport->phba; 2155 LPFC_MBOXQ_t *mbox; 2156 int rc; 2157 2158 if (ndlp->nlp_rpi) { 2159 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 2160 if (mbox) { 2161 lpfc_unreg_login(phba, vport->vpi, ndlp->nlp_rpi, mbox); 2162 mbox->vport = vport; 2163 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl; 2164 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT); 2165 if (rc == MBX_NOT_FINISHED) 2166 mempool_free(mbox, phba->mbox_mem_pool); 2167 } 2168 lpfc_no_rpi(phba, ndlp); 2169 ndlp->nlp_rpi = 0; 2170 return 1; 2171 } 2172 return 0; 2173 } 2174 2175 void 2176 lpfc_unreg_all_rpis(struct lpfc_vport *vport) 2177 { 2178 struct lpfc_hba *phba = vport->phba; 2179 LPFC_MBOXQ_t *mbox; 2180 int rc; 2181 2182 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 2183 if (mbox) { 2184 lpfc_unreg_login(phba, vport->vpi, 0xffff, mbox); 2185 mbox->vport = vport; 2186 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl; 2187 mbox->context1 = NULL; 2188 rc = lpfc_sli_issue_mbox_wait(phba, mbox, LPFC_MBOX_TMO); 2189 if (rc == MBX_NOT_FINISHED) { 2190 mempool_free(mbox, phba->mbox_mem_pool); 2191 } 2192 } 2193 } 2194 2195 void 2196 lpfc_unreg_default_rpis(struct lpfc_vport *vport) 2197 { 2198 struct lpfc_hba *phba = vport->phba; 2199 LPFC_MBOXQ_t *mbox; 2200 int rc; 2201 2202 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 2203 if (mbox) { 2204 lpfc_unreg_did(phba, vport->vpi, 0xffffffff, mbox); 2205 mbox->vport = vport; 2206 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl; 2207 mbox->context1 = NULL; 2208 rc = lpfc_sli_issue_mbox_wait(phba, mbox, LPFC_MBOX_TMO); 2209 if (rc == MBX_NOT_FINISHED) { 2210 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX | LOG_VPORT, 2211 "1815 Could not issue " 2212 "unreg_did (default rpis)\n"); 2213 mempool_free(mbox, phba->mbox_mem_pool); 2214 } 2215 } 2216 } 2217 2218 /* 2219 * Free resources associated with LPFC_NODELIST entry 2220 * so it can be freed. 2221 */ 2222 static int 2223 lpfc_cleanup_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) 2224 { 2225 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 2226 struct lpfc_hba *phba = vport->phba; 2227 LPFC_MBOXQ_t *mb, *nextmb; 2228 struct lpfc_dmabuf *mp; 2229 2230 /* Cleanup node for NPort <nlp_DID> */ 2231 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE, 2232 "0900 Cleanup node for NPort x%x " 2233 "Data: x%x x%x x%x\n", 2234 ndlp->nlp_DID, ndlp->nlp_flag, 2235 ndlp->nlp_state, ndlp->nlp_rpi); 2236 if (NLP_CHK_FREE_REQ(ndlp)) { 2237 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NODE, 2238 "0280 lpfc_cleanup_node: ndlp:x%p " 2239 "usgmap:x%x refcnt:%d\n", 2240 (void *)ndlp, ndlp->nlp_usg_map, 2241 atomic_read(&ndlp->kref.refcount)); 2242 lpfc_dequeue_node(vport, ndlp); 2243 } else { 2244 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NODE, 2245 "0281 lpfc_cleanup_node: ndlp:x%p " 2246 "usgmap:x%x refcnt:%d\n", 2247 (void *)ndlp, ndlp->nlp_usg_map, 2248 atomic_read(&ndlp->kref.refcount)); 2249 lpfc_disable_node(vport, ndlp); 2250 } 2251 2252 /* cleanup any ndlp on mbox q waiting for reglogin cmpl */ 2253 if ((mb = phba->sli.mbox_active)) { 2254 if ((mb->mb.mbxCommand == MBX_REG_LOGIN64) && 2255 (ndlp == (struct lpfc_nodelist *) mb->context2)) { 2256 mb->context2 = NULL; 2257 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl; 2258 } 2259 } 2260 2261 spin_lock_irq(&phba->hbalock); 2262 list_for_each_entry_safe(mb, nextmb, &phba->sli.mboxq, list) { 2263 if ((mb->mb.mbxCommand == MBX_REG_LOGIN64) && 2264 (ndlp == (struct lpfc_nodelist *) mb->context2)) { 2265 mp = (struct lpfc_dmabuf *) (mb->context1); 2266 if (mp) { 2267 __lpfc_mbuf_free(phba, mp->virt, mp->phys); 2268 kfree(mp); 2269 } 2270 list_del(&mb->list); 2271 mempool_free(mb, phba->mbox_mem_pool); 2272 /* We shall not invoke the lpfc_nlp_put to decrement 2273 * the ndlp reference count as we are in the process 2274 * of lpfc_nlp_release. 2275 */ 2276 } 2277 } 2278 spin_unlock_irq(&phba->hbalock); 2279 2280 lpfc_els_abort(phba, ndlp); 2281 2282 spin_lock_irq(shost->host_lock); 2283 ndlp->nlp_flag &= ~NLP_DELAY_TMO; 2284 spin_unlock_irq(shost->host_lock); 2285 2286 ndlp->nlp_last_elscmd = 0; 2287 del_timer_sync(&ndlp->nlp_delayfunc); 2288 2289 list_del_init(&ndlp->els_retry_evt.evt_listp); 2290 list_del_init(&ndlp->dev_loss_evt.evt_listp); 2291 2292 lpfc_unreg_rpi(vport, ndlp); 2293 2294 return 0; 2295 } 2296 2297 /* 2298 * Check to see if we can free the nlp back to the freelist. 2299 * If we are in the middle of using the nlp in the discovery state 2300 * machine, defer the free till we reach the end of the state machine. 2301 */ 2302 static void 2303 lpfc_nlp_remove(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) 2304 { 2305 struct lpfc_hba *phba = vport->phba; 2306 struct lpfc_rport_data *rdata; 2307 LPFC_MBOXQ_t *mbox; 2308 int rc; 2309 2310 lpfc_cancel_retry_delay_tmo(vport, ndlp); 2311 if (ndlp->nlp_flag & NLP_DEFER_RM && !ndlp->nlp_rpi) { 2312 /* For this case we need to cleanup the default rpi 2313 * allocated by the firmware. 2314 */ 2315 if ((mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL)) 2316 != NULL) { 2317 rc = lpfc_reg_login(phba, vport->vpi, ndlp->nlp_DID, 2318 (uint8_t *) &vport->fc_sparam, mbox, 0); 2319 if (rc) { 2320 mempool_free(mbox, phba->mbox_mem_pool); 2321 } 2322 else { 2323 mbox->mbox_flag |= LPFC_MBX_IMED_UNREG; 2324 mbox->mbox_cmpl = lpfc_mbx_cmpl_dflt_rpi; 2325 mbox->vport = vport; 2326 mbox->context2 = NULL; 2327 rc =lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT); 2328 if (rc == MBX_NOT_FINISHED) { 2329 mempool_free(mbox, phba->mbox_mem_pool); 2330 } 2331 } 2332 } 2333 } 2334 lpfc_cleanup_node(vport, ndlp); 2335 2336 /* 2337 * We can get here with a non-NULL ndlp->rport because when we 2338 * unregister a rport we don't break the rport/node linkage. So if we 2339 * do, make sure we don't leaving any dangling pointers behind. 2340 */ 2341 if (ndlp->rport) { 2342 rdata = ndlp->rport->dd_data; 2343 rdata->pnode = NULL; 2344 ndlp->rport = NULL; 2345 } 2346 } 2347 2348 static int 2349 lpfc_matchdid(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 2350 uint32_t did) 2351 { 2352 D_ID mydid, ndlpdid, matchdid; 2353 2354 if (did == Bcast_DID) 2355 return 0; 2356 2357 /* First check for Direct match */ 2358 if (ndlp->nlp_DID == did) 2359 return 1; 2360 2361 /* Next check for area/domain identically equals 0 match */ 2362 mydid.un.word = vport->fc_myDID; 2363 if ((mydid.un.b.domain == 0) && (mydid.un.b.area == 0)) { 2364 return 0; 2365 } 2366 2367 matchdid.un.word = did; 2368 ndlpdid.un.word = ndlp->nlp_DID; 2369 if (matchdid.un.b.id == ndlpdid.un.b.id) { 2370 if ((mydid.un.b.domain == matchdid.un.b.domain) && 2371 (mydid.un.b.area == matchdid.un.b.area)) { 2372 if ((ndlpdid.un.b.domain == 0) && 2373 (ndlpdid.un.b.area == 0)) { 2374 if (ndlpdid.un.b.id) 2375 return 1; 2376 } 2377 return 0; 2378 } 2379 2380 matchdid.un.word = ndlp->nlp_DID; 2381 if ((mydid.un.b.domain == ndlpdid.un.b.domain) && 2382 (mydid.un.b.area == ndlpdid.un.b.area)) { 2383 if ((matchdid.un.b.domain == 0) && 2384 (matchdid.un.b.area == 0)) { 2385 if (matchdid.un.b.id) 2386 return 1; 2387 } 2388 } 2389 } 2390 return 0; 2391 } 2392 2393 /* Search for a nodelist entry */ 2394 static struct lpfc_nodelist * 2395 __lpfc_findnode_did(struct lpfc_vport *vport, uint32_t did) 2396 { 2397 struct lpfc_nodelist *ndlp; 2398 uint32_t data1; 2399 2400 list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) { 2401 if (lpfc_matchdid(vport, ndlp, did)) { 2402 data1 = (((uint32_t) ndlp->nlp_state << 24) | 2403 ((uint32_t) ndlp->nlp_xri << 16) | 2404 ((uint32_t) ndlp->nlp_type << 8) | 2405 ((uint32_t) ndlp->nlp_rpi & 0xff)); 2406 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE, 2407 "0929 FIND node DID " 2408 "Data: x%p x%x x%x x%x\n", 2409 ndlp, ndlp->nlp_DID, 2410 ndlp->nlp_flag, data1); 2411 return ndlp; 2412 } 2413 } 2414 2415 /* FIND node did <did> NOT FOUND */ 2416 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE, 2417 "0932 FIND node did x%x NOT FOUND.\n", did); 2418 return NULL; 2419 } 2420 2421 struct lpfc_nodelist * 2422 lpfc_findnode_did(struct lpfc_vport *vport, uint32_t did) 2423 { 2424 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 2425 struct lpfc_nodelist *ndlp; 2426 2427 spin_lock_irq(shost->host_lock); 2428 ndlp = __lpfc_findnode_did(vport, did); 2429 spin_unlock_irq(shost->host_lock); 2430 return ndlp; 2431 } 2432 2433 struct lpfc_nodelist * 2434 lpfc_setup_disc_node(struct lpfc_vport *vport, uint32_t did) 2435 { 2436 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 2437 struct lpfc_nodelist *ndlp; 2438 2439 ndlp = lpfc_findnode_did(vport, did); 2440 if (!ndlp) { 2441 if ((vport->fc_flag & FC_RSCN_MODE) != 0 && 2442 lpfc_rscn_payload_check(vport, did) == 0) 2443 return NULL; 2444 ndlp = (struct lpfc_nodelist *) 2445 mempool_alloc(vport->phba->nlp_mem_pool, GFP_KERNEL); 2446 if (!ndlp) 2447 return NULL; 2448 lpfc_nlp_init(vport, ndlp, did); 2449 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE); 2450 spin_lock_irq(shost->host_lock); 2451 ndlp->nlp_flag |= NLP_NPR_2B_DISC; 2452 spin_unlock_irq(shost->host_lock); 2453 return ndlp; 2454 } else if (!NLP_CHK_NODE_ACT(ndlp)) { 2455 ndlp = lpfc_enable_node(vport, ndlp, NLP_STE_NPR_NODE); 2456 if (!ndlp) 2457 return NULL; 2458 spin_lock_irq(shost->host_lock); 2459 ndlp->nlp_flag |= NLP_NPR_2B_DISC; 2460 spin_unlock_irq(shost->host_lock); 2461 return ndlp; 2462 } 2463 2464 if ((vport->fc_flag & FC_RSCN_MODE) && 2465 !(vport->fc_flag & FC_NDISC_ACTIVE)) { 2466 if (lpfc_rscn_payload_check(vport, did)) { 2467 /* If we've already recieved a PLOGI from this NPort 2468 * we don't need to try to discover it again. 2469 */ 2470 if (ndlp->nlp_flag & NLP_RCV_PLOGI) 2471 return NULL; 2472 2473 spin_lock_irq(shost->host_lock); 2474 ndlp->nlp_flag |= NLP_NPR_2B_DISC; 2475 spin_unlock_irq(shost->host_lock); 2476 2477 /* Since this node is marked for discovery, 2478 * delay timeout is not needed. 2479 */ 2480 lpfc_cancel_retry_delay_tmo(vport, ndlp); 2481 } else 2482 ndlp = NULL; 2483 } else { 2484 /* If we've already recieved a PLOGI from this NPort, 2485 * or we are already in the process of discovery on it, 2486 * we don't need to try to discover it again. 2487 */ 2488 if (ndlp->nlp_state == NLP_STE_ADISC_ISSUE || 2489 ndlp->nlp_state == NLP_STE_PLOGI_ISSUE || 2490 ndlp->nlp_flag & NLP_RCV_PLOGI) 2491 return NULL; 2492 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE); 2493 spin_lock_irq(shost->host_lock); 2494 ndlp->nlp_flag |= NLP_NPR_2B_DISC; 2495 spin_unlock_irq(shost->host_lock); 2496 } 2497 return ndlp; 2498 } 2499 2500 /* Build a list of nodes to discover based on the loopmap */ 2501 void 2502 lpfc_disc_list_loopmap(struct lpfc_vport *vport) 2503 { 2504 struct lpfc_hba *phba = vport->phba; 2505 int j; 2506 uint32_t alpa, index; 2507 2508 if (!lpfc_is_link_up(phba)) 2509 return; 2510 2511 if (phba->fc_topology != TOPOLOGY_LOOP) 2512 return; 2513 2514 /* Check for loop map present or not */ 2515 if (phba->alpa_map[0]) { 2516 for (j = 1; j <= phba->alpa_map[0]; j++) { 2517 alpa = phba->alpa_map[j]; 2518 if (((vport->fc_myDID & 0xff) == alpa) || (alpa == 0)) 2519 continue; 2520 lpfc_setup_disc_node(vport, alpa); 2521 } 2522 } else { 2523 /* No alpamap, so try all alpa's */ 2524 for (j = 0; j < FC_MAXLOOP; j++) { 2525 /* If cfg_scan_down is set, start from highest 2526 * ALPA (0xef) to lowest (0x1). 2527 */ 2528 if (vport->cfg_scan_down) 2529 index = j; 2530 else 2531 index = FC_MAXLOOP - j - 1; 2532 alpa = lpfcAlpaArray[index]; 2533 if ((vport->fc_myDID & 0xff) == alpa) 2534 continue; 2535 lpfc_setup_disc_node(vport, alpa); 2536 } 2537 } 2538 return; 2539 } 2540 2541 void 2542 lpfc_issue_clear_la(struct lpfc_hba *phba, struct lpfc_vport *vport) 2543 { 2544 LPFC_MBOXQ_t *mbox; 2545 struct lpfc_sli *psli = &phba->sli; 2546 struct lpfc_sli_ring *extra_ring = &psli->ring[psli->extra_ring]; 2547 struct lpfc_sli_ring *fcp_ring = &psli->ring[psli->fcp_ring]; 2548 struct lpfc_sli_ring *next_ring = &psli->ring[psli->next_ring]; 2549 int rc; 2550 2551 /* 2552 * if it's not a physical port or if we already send 2553 * clear_la then don't send it. 2554 */ 2555 if ((phba->link_state >= LPFC_CLEAR_LA) || 2556 (vport->port_type != LPFC_PHYSICAL_PORT)) 2557 return; 2558 2559 /* Link up discovery */ 2560 if ((mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL)) != NULL) { 2561 phba->link_state = LPFC_CLEAR_LA; 2562 lpfc_clear_la(phba, mbox); 2563 mbox->mbox_cmpl = lpfc_mbx_cmpl_clear_la; 2564 mbox->vport = vport; 2565 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT); 2566 if (rc == MBX_NOT_FINISHED) { 2567 mempool_free(mbox, phba->mbox_mem_pool); 2568 lpfc_disc_flush_list(vport); 2569 extra_ring->flag &= ~LPFC_STOP_IOCB_EVENT; 2570 fcp_ring->flag &= ~LPFC_STOP_IOCB_EVENT; 2571 next_ring->flag &= ~LPFC_STOP_IOCB_EVENT; 2572 phba->link_state = LPFC_HBA_ERROR; 2573 } 2574 } 2575 } 2576 2577 /* Reg_vpi to tell firmware to resume normal operations */ 2578 void 2579 lpfc_issue_reg_vpi(struct lpfc_hba *phba, struct lpfc_vport *vport) 2580 { 2581 LPFC_MBOXQ_t *regvpimbox; 2582 2583 regvpimbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 2584 if (regvpimbox) { 2585 lpfc_reg_vpi(phba, vport->vpi, vport->fc_myDID, regvpimbox); 2586 regvpimbox->mbox_cmpl = lpfc_mbx_cmpl_reg_vpi; 2587 regvpimbox->vport = vport; 2588 if (lpfc_sli_issue_mbox(phba, regvpimbox, MBX_NOWAIT) 2589 == MBX_NOT_FINISHED) { 2590 mempool_free(regvpimbox, phba->mbox_mem_pool); 2591 } 2592 } 2593 } 2594 2595 /* Start Link up / RSCN discovery on NPR nodes */ 2596 void 2597 lpfc_disc_start(struct lpfc_vport *vport) 2598 { 2599 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 2600 struct lpfc_hba *phba = vport->phba; 2601 uint32_t num_sent; 2602 uint32_t clear_la_pending; 2603 int did_changed; 2604 2605 if (!lpfc_is_link_up(phba)) 2606 return; 2607 2608 if (phba->link_state == LPFC_CLEAR_LA) 2609 clear_la_pending = 1; 2610 else 2611 clear_la_pending = 0; 2612 2613 if (vport->port_state < LPFC_VPORT_READY) 2614 vport->port_state = LPFC_DISC_AUTH; 2615 2616 lpfc_set_disctmo(vport); 2617 2618 if (vport->fc_prevDID == vport->fc_myDID) 2619 did_changed = 0; 2620 else 2621 did_changed = 1; 2622 2623 vport->fc_prevDID = vport->fc_myDID; 2624 vport->num_disc_nodes = 0; 2625 2626 /* Start Discovery state <hba_state> */ 2627 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, 2628 "0202 Start Discovery hba state x%x " 2629 "Data: x%x x%x x%x\n", 2630 vport->port_state, vport->fc_flag, vport->fc_plogi_cnt, 2631 vport->fc_adisc_cnt); 2632 2633 /* First do ADISCs - if any */ 2634 num_sent = lpfc_els_disc_adisc(vport); 2635 2636 if (num_sent) 2637 return; 2638 2639 /* 2640 * For SLI3, cmpl_reg_vpi will set port_state to READY, and 2641 * continue discovery. 2642 */ 2643 if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) && 2644 !(vport->fc_flag & FC_PT2PT) && 2645 !(vport->fc_flag & FC_RSCN_MODE)) { 2646 lpfc_issue_reg_vpi(phba, vport); 2647 return; 2648 } 2649 2650 /* 2651 * For SLI2, we need to set port_state to READY and continue 2652 * discovery. 2653 */ 2654 if (vport->port_state < LPFC_VPORT_READY && !clear_la_pending) { 2655 /* If we get here, there is nothing to ADISC */ 2656 if (vport->port_type == LPFC_PHYSICAL_PORT) 2657 lpfc_issue_clear_la(phba, vport); 2658 2659 if (!(vport->fc_flag & FC_ABORT_DISCOVERY)) { 2660 vport->num_disc_nodes = 0; 2661 /* go thru NPR nodes and issue ELS PLOGIs */ 2662 if (vport->fc_npr_cnt) 2663 lpfc_els_disc_plogi(vport); 2664 2665 if (!vport->num_disc_nodes) { 2666 spin_lock_irq(shost->host_lock); 2667 vport->fc_flag &= ~FC_NDISC_ACTIVE; 2668 spin_unlock_irq(shost->host_lock); 2669 lpfc_can_disctmo(vport); 2670 } 2671 } 2672 vport->port_state = LPFC_VPORT_READY; 2673 } else { 2674 /* Next do PLOGIs - if any */ 2675 num_sent = lpfc_els_disc_plogi(vport); 2676 2677 if (num_sent) 2678 return; 2679 2680 if (vport->fc_flag & FC_RSCN_MODE) { 2681 /* Check to see if more RSCNs came in while we 2682 * were processing this one. 2683 */ 2684 if ((vport->fc_rscn_id_cnt == 0) && 2685 (!(vport->fc_flag & FC_RSCN_DISCOVERY))) { 2686 spin_lock_irq(shost->host_lock); 2687 vport->fc_flag &= ~FC_RSCN_MODE; 2688 spin_unlock_irq(shost->host_lock); 2689 lpfc_can_disctmo(vport); 2690 } else 2691 lpfc_els_handle_rscn(vport); 2692 } 2693 } 2694 return; 2695 } 2696 2697 /* 2698 * Ignore completion for all IOCBs on tx and txcmpl queue for ELS 2699 * ring the match the sppecified nodelist. 2700 */ 2701 static void 2702 lpfc_free_tx(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp) 2703 { 2704 LIST_HEAD(completions); 2705 struct lpfc_sli *psli; 2706 IOCB_t *icmd; 2707 struct lpfc_iocbq *iocb, *next_iocb; 2708 struct lpfc_sli_ring *pring; 2709 2710 psli = &phba->sli; 2711 pring = &psli->ring[LPFC_ELS_RING]; 2712 2713 /* Error matching iocb on txq or txcmplq 2714 * First check the txq. 2715 */ 2716 spin_lock_irq(&phba->hbalock); 2717 list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) { 2718 if (iocb->context1 != ndlp) { 2719 continue; 2720 } 2721 icmd = &iocb->iocb; 2722 if ((icmd->ulpCommand == CMD_ELS_REQUEST64_CR) || 2723 (icmd->ulpCommand == CMD_XMIT_ELS_RSP64_CX)) { 2724 2725 list_move_tail(&iocb->list, &completions); 2726 pring->txq_cnt--; 2727 } 2728 } 2729 2730 /* Next check the txcmplq */ 2731 list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq, list) { 2732 if (iocb->context1 != ndlp) { 2733 continue; 2734 } 2735 icmd = &iocb->iocb; 2736 if (icmd->ulpCommand == CMD_ELS_REQUEST64_CR || 2737 icmd->ulpCommand == CMD_XMIT_ELS_RSP64_CX) { 2738 lpfc_sli_issue_abort_iotag(phba, pring, iocb); 2739 } 2740 } 2741 spin_unlock_irq(&phba->hbalock); 2742 2743 while (!list_empty(&completions)) { 2744 iocb = list_get_first(&completions, struct lpfc_iocbq, list); 2745 list_del_init(&iocb->list); 2746 2747 if (!iocb->iocb_cmpl) 2748 lpfc_sli_release_iocbq(phba, iocb); 2749 else { 2750 icmd = &iocb->iocb; 2751 icmd->ulpStatus = IOSTAT_LOCAL_REJECT; 2752 icmd->un.ulpWord[4] = IOERR_SLI_ABORTED; 2753 (iocb->iocb_cmpl) (phba, iocb, iocb); 2754 } 2755 } 2756 } 2757 2758 static void 2759 lpfc_disc_flush_list(struct lpfc_vport *vport) 2760 { 2761 struct lpfc_nodelist *ndlp, *next_ndlp; 2762 struct lpfc_hba *phba = vport->phba; 2763 2764 if (vport->fc_plogi_cnt || vport->fc_adisc_cnt) { 2765 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, 2766 nlp_listp) { 2767 if (!NLP_CHK_NODE_ACT(ndlp)) 2768 continue; 2769 if (ndlp->nlp_state == NLP_STE_PLOGI_ISSUE || 2770 ndlp->nlp_state == NLP_STE_ADISC_ISSUE) { 2771 lpfc_free_tx(phba, ndlp); 2772 } 2773 } 2774 } 2775 } 2776 2777 void 2778 lpfc_cleanup_discovery_resources(struct lpfc_vport *vport) 2779 { 2780 lpfc_els_flush_rscn(vport); 2781 lpfc_els_flush_cmd(vport); 2782 lpfc_disc_flush_list(vport); 2783 } 2784 2785 /*****************************************************************************/ 2786 /* 2787 * NAME: lpfc_disc_timeout 2788 * 2789 * FUNCTION: Fibre Channel driver discovery timeout routine. 2790 * 2791 * EXECUTION ENVIRONMENT: interrupt only 2792 * 2793 * CALLED FROM: 2794 * Timer function 2795 * 2796 * RETURNS: 2797 * none 2798 */ 2799 /*****************************************************************************/ 2800 void 2801 lpfc_disc_timeout(unsigned long ptr) 2802 { 2803 struct lpfc_vport *vport = (struct lpfc_vport *) ptr; 2804 struct lpfc_hba *phba = vport->phba; 2805 uint32_t tmo_posted; 2806 unsigned long flags = 0; 2807 2808 if (unlikely(!phba)) 2809 return; 2810 2811 spin_lock_irqsave(&vport->work_port_lock, flags); 2812 tmo_posted = vport->work_port_events & WORKER_DISC_TMO; 2813 if (!tmo_posted) 2814 vport->work_port_events |= WORKER_DISC_TMO; 2815 spin_unlock_irqrestore(&vport->work_port_lock, flags); 2816 2817 if (!tmo_posted) 2818 lpfc_worker_wake_up(phba); 2819 return; 2820 } 2821 2822 static void 2823 lpfc_disc_timeout_handler(struct lpfc_vport *vport) 2824 { 2825 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 2826 struct lpfc_hba *phba = vport->phba; 2827 struct lpfc_sli *psli = &phba->sli; 2828 struct lpfc_nodelist *ndlp, *next_ndlp; 2829 LPFC_MBOXQ_t *initlinkmbox; 2830 int rc, clrlaerr = 0; 2831 2832 if (!(vport->fc_flag & FC_DISC_TMO)) 2833 return; 2834 2835 spin_lock_irq(shost->host_lock); 2836 vport->fc_flag &= ~FC_DISC_TMO; 2837 spin_unlock_irq(shost->host_lock); 2838 2839 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, 2840 "disc timeout: state:x%x rtry:x%x flg:x%x", 2841 vport->port_state, vport->fc_ns_retry, vport->fc_flag); 2842 2843 switch (vport->port_state) { 2844 2845 case LPFC_LOCAL_CFG_LINK: 2846 /* port_state is identically LPFC_LOCAL_CFG_LINK while waiting for 2847 * FAN 2848 */ 2849 /* FAN timeout */ 2850 lpfc_printf_vlog(vport, KERN_WARNING, LOG_DISCOVERY, 2851 "0221 FAN timeout\n"); 2852 /* Start discovery by sending FLOGI, clean up old rpis */ 2853 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, 2854 nlp_listp) { 2855 if (!NLP_CHK_NODE_ACT(ndlp)) 2856 continue; 2857 if (ndlp->nlp_state != NLP_STE_NPR_NODE) 2858 continue; 2859 if (ndlp->nlp_type & NLP_FABRIC) { 2860 /* Clean up the ndlp on Fabric connections */ 2861 lpfc_drop_node(vport, ndlp); 2862 2863 } else if (!(ndlp->nlp_flag & NLP_NPR_ADISC)) { 2864 /* Fail outstanding IO now since device 2865 * is marked for PLOGI. 2866 */ 2867 lpfc_unreg_rpi(vport, ndlp); 2868 } 2869 } 2870 if (vport->port_state != LPFC_FLOGI) { 2871 lpfc_initial_flogi(vport); 2872 return; 2873 } 2874 break; 2875 2876 case LPFC_FDISC: 2877 case LPFC_FLOGI: 2878 /* port_state is identically LPFC_FLOGI while waiting for FLOGI cmpl */ 2879 /* Initial FLOGI timeout */ 2880 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY, 2881 "0222 Initial %s timeout\n", 2882 vport->vpi ? "FDISC" : "FLOGI"); 2883 2884 /* Assume no Fabric and go on with discovery. 2885 * Check for outstanding ELS FLOGI to abort. 2886 */ 2887 2888 /* FLOGI failed, so just use loop map to make discovery list */ 2889 lpfc_disc_list_loopmap(vport); 2890 2891 /* Start discovery */ 2892 lpfc_disc_start(vport); 2893 break; 2894 2895 case LPFC_FABRIC_CFG_LINK: 2896 /* hba_state is identically LPFC_FABRIC_CFG_LINK while waiting for 2897 NameServer login */ 2898 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY, 2899 "0223 Timeout while waiting for " 2900 "NameServer login\n"); 2901 /* Next look for NameServer ndlp */ 2902 ndlp = lpfc_findnode_did(vport, NameServer_DID); 2903 if (ndlp && NLP_CHK_NODE_ACT(ndlp)) 2904 lpfc_els_abort(phba, ndlp); 2905 2906 /* ReStart discovery */ 2907 goto restart_disc; 2908 2909 case LPFC_NS_QRY: 2910 /* Check for wait for NameServer Rsp timeout */ 2911 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY, 2912 "0224 NameServer Query timeout " 2913 "Data: x%x x%x\n", 2914 vport->fc_ns_retry, LPFC_MAX_NS_RETRY); 2915 2916 if (vport->fc_ns_retry < LPFC_MAX_NS_RETRY) { 2917 /* Try it one more time */ 2918 vport->fc_ns_retry++; 2919 rc = lpfc_ns_cmd(vport, SLI_CTNS_GID_FT, 2920 vport->fc_ns_retry, 0); 2921 if (rc == 0) 2922 break; 2923 } 2924 vport->fc_ns_retry = 0; 2925 2926 restart_disc: 2927 /* 2928 * Discovery is over. 2929 * set port_state to PORT_READY if SLI2. 2930 * cmpl_reg_vpi will set port_state to READY for SLI3. 2931 */ 2932 if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) 2933 lpfc_issue_reg_vpi(phba, vport); 2934 else { /* NPIV Not enabled */ 2935 lpfc_issue_clear_la(phba, vport); 2936 vport->port_state = LPFC_VPORT_READY; 2937 } 2938 2939 /* Setup and issue mailbox INITIALIZE LINK command */ 2940 initlinkmbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 2941 if (!initlinkmbox) { 2942 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY, 2943 "0206 Device Discovery " 2944 "completion error\n"); 2945 phba->link_state = LPFC_HBA_ERROR; 2946 break; 2947 } 2948 2949 lpfc_linkdown(phba); 2950 lpfc_init_link(phba, initlinkmbox, phba->cfg_topology, 2951 phba->cfg_link_speed); 2952 initlinkmbox->mb.un.varInitLnk.lipsr_AL_PA = 0; 2953 initlinkmbox->vport = vport; 2954 initlinkmbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl; 2955 rc = lpfc_sli_issue_mbox(phba, initlinkmbox, MBX_NOWAIT); 2956 lpfc_set_loopback_flag(phba); 2957 if (rc == MBX_NOT_FINISHED) 2958 mempool_free(initlinkmbox, phba->mbox_mem_pool); 2959 2960 break; 2961 2962 case LPFC_DISC_AUTH: 2963 /* Node Authentication timeout */ 2964 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY, 2965 "0227 Node Authentication timeout\n"); 2966 lpfc_disc_flush_list(vport); 2967 2968 /* 2969 * set port_state to PORT_READY if SLI2. 2970 * cmpl_reg_vpi will set port_state to READY for SLI3. 2971 */ 2972 if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) 2973 lpfc_issue_reg_vpi(phba, vport); 2974 else { /* NPIV Not enabled */ 2975 lpfc_issue_clear_la(phba, vport); 2976 vport->port_state = LPFC_VPORT_READY; 2977 } 2978 break; 2979 2980 case LPFC_VPORT_READY: 2981 if (vport->fc_flag & FC_RSCN_MODE) { 2982 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY, 2983 "0231 RSCN timeout Data: x%x " 2984 "x%x\n", 2985 vport->fc_ns_retry, LPFC_MAX_NS_RETRY); 2986 2987 /* Cleanup any outstanding ELS commands */ 2988 lpfc_els_flush_cmd(vport); 2989 2990 lpfc_els_flush_rscn(vport); 2991 lpfc_disc_flush_list(vport); 2992 } 2993 break; 2994 2995 default: 2996 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY, 2997 "0273 Unexpected discovery timeout, " 2998 "vport State x%x\n", vport->port_state); 2999 break; 3000 } 3001 3002 switch (phba->link_state) { 3003 case LPFC_CLEAR_LA: 3004 /* CLEAR LA timeout */ 3005 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY, 3006 "0228 CLEAR LA timeout\n"); 3007 clrlaerr = 1; 3008 break; 3009 3010 case LPFC_LINK_UP: 3011 lpfc_issue_clear_la(phba, vport); 3012 /* Drop thru */ 3013 case LPFC_LINK_UNKNOWN: 3014 case LPFC_WARM_START: 3015 case LPFC_INIT_START: 3016 case LPFC_INIT_MBX_CMDS: 3017 case LPFC_LINK_DOWN: 3018 case LPFC_HBA_ERROR: 3019 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY, 3020 "0230 Unexpected timeout, hba link " 3021 "state x%x\n", phba->link_state); 3022 clrlaerr = 1; 3023 break; 3024 3025 case LPFC_HBA_READY: 3026 break; 3027 } 3028 3029 if (clrlaerr) { 3030 lpfc_disc_flush_list(vport); 3031 psli->ring[(psli->extra_ring)].flag &= ~LPFC_STOP_IOCB_EVENT; 3032 psli->ring[(psli->fcp_ring)].flag &= ~LPFC_STOP_IOCB_EVENT; 3033 psli->ring[(psli->next_ring)].flag &= ~LPFC_STOP_IOCB_EVENT; 3034 vport->port_state = LPFC_VPORT_READY; 3035 } 3036 3037 return; 3038 } 3039 3040 /* 3041 * This routine handles processing a NameServer REG_LOGIN mailbox 3042 * command upon completion. It is setup in the LPFC_MBOXQ 3043 * as the completion routine when the command is 3044 * handed off to the SLI layer. 3045 */ 3046 void 3047 lpfc_mbx_cmpl_fdmi_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 3048 { 3049 MAILBOX_t *mb = &pmb->mb; 3050 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1); 3051 struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) pmb->context2; 3052 struct lpfc_vport *vport = pmb->vport; 3053 3054 pmb->context1 = NULL; 3055 3056 ndlp->nlp_rpi = mb->un.varWords[0]; 3057 ndlp->nlp_type |= NLP_FABRIC; 3058 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE); 3059 3060 /* 3061 * Start issuing Fabric-Device Management Interface (FDMI) command to 3062 * 0xfffffa (FDMI well known port) or Delay issuing FDMI command if 3063 * fdmi-on=2 (supporting RPA/hostnmae) 3064 */ 3065 3066 if (vport->cfg_fdmi_on == 1) 3067 lpfc_fdmi_cmd(vport, ndlp, SLI_MGMT_DHBA); 3068 else 3069 mod_timer(&vport->fc_fdmitmo, jiffies + HZ * 60); 3070 3071 /* decrement the node reference count held for this callback 3072 * function. 3073 */ 3074 lpfc_nlp_put(ndlp); 3075 lpfc_mbuf_free(phba, mp->virt, mp->phys); 3076 kfree(mp); 3077 mempool_free(pmb, phba->mbox_mem_pool); 3078 3079 return; 3080 } 3081 3082 static int 3083 lpfc_filter_by_rpi(struct lpfc_nodelist *ndlp, void *param) 3084 { 3085 uint16_t *rpi = param; 3086 3087 return ndlp->nlp_rpi == *rpi; 3088 } 3089 3090 static int 3091 lpfc_filter_by_wwpn(struct lpfc_nodelist *ndlp, void *param) 3092 { 3093 return memcmp(&ndlp->nlp_portname, param, 3094 sizeof(ndlp->nlp_portname)) == 0; 3095 } 3096 3097 static struct lpfc_nodelist * 3098 __lpfc_find_node(struct lpfc_vport *vport, node_filter filter, void *param) 3099 { 3100 struct lpfc_nodelist *ndlp; 3101 3102 list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) { 3103 if (filter(ndlp, param)) 3104 return ndlp; 3105 } 3106 return NULL; 3107 } 3108 3109 /* 3110 * This routine looks up the ndlp lists for the given RPI. If rpi found it 3111 * returns the node list element pointer else return NULL. 3112 */ 3113 struct lpfc_nodelist * 3114 __lpfc_findnode_rpi(struct lpfc_vport *vport, uint16_t rpi) 3115 { 3116 return __lpfc_find_node(vport, lpfc_filter_by_rpi, &rpi); 3117 } 3118 3119 /* 3120 * This routine looks up the ndlp lists for the given WWPN. If WWPN found it 3121 * returns the node element list pointer else return NULL. 3122 */ 3123 struct lpfc_nodelist * 3124 lpfc_findnode_wwpn(struct lpfc_vport *vport, struct lpfc_name *wwpn) 3125 { 3126 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 3127 struct lpfc_nodelist *ndlp; 3128 3129 spin_lock_irq(shost->host_lock); 3130 ndlp = __lpfc_find_node(vport, lpfc_filter_by_wwpn, wwpn); 3131 spin_unlock_irq(shost->host_lock); 3132 return ndlp; 3133 } 3134 3135 void 3136 lpfc_nlp_init(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 3137 uint32_t did) 3138 { 3139 memset(ndlp, 0, sizeof (struct lpfc_nodelist)); 3140 3141 lpfc_initialize_node(vport, ndlp, did); 3142 INIT_LIST_HEAD(&ndlp->nlp_listp); 3143 3144 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE, 3145 "node init: did:x%x", 3146 ndlp->nlp_DID, 0, 0); 3147 3148 return; 3149 } 3150 3151 /* This routine releases all resources associated with a specifc NPort's ndlp 3152 * and mempool_free's the nodelist. 3153 */ 3154 static void 3155 lpfc_nlp_release(struct kref *kref) 3156 { 3157 struct lpfc_hba *phba; 3158 unsigned long flags; 3159 struct lpfc_nodelist *ndlp = container_of(kref, struct lpfc_nodelist, 3160 kref); 3161 3162 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE, 3163 "node release: did:x%x flg:x%x type:x%x", 3164 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type); 3165 3166 lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_NODE, 3167 "0279 lpfc_nlp_release: ndlp:x%p " 3168 "usgmap:x%x refcnt:%d\n", 3169 (void *)ndlp, ndlp->nlp_usg_map, 3170 atomic_read(&ndlp->kref.refcount)); 3171 3172 /* remove ndlp from action. */ 3173 lpfc_nlp_remove(ndlp->vport, ndlp); 3174 3175 /* clear the ndlp active flag for all release cases */ 3176 phba = ndlp->vport->phba; 3177 spin_lock_irqsave(&phba->ndlp_lock, flags); 3178 NLP_CLR_NODE_ACT(ndlp); 3179 spin_unlock_irqrestore(&phba->ndlp_lock, flags); 3180 3181 /* free ndlp memory for final ndlp release */ 3182 if (NLP_CHK_FREE_REQ(ndlp)) { 3183 kfree(ndlp->lat_data); 3184 mempool_free(ndlp, ndlp->vport->phba->nlp_mem_pool); 3185 } 3186 } 3187 3188 /* This routine bumps the reference count for a ndlp structure to ensure 3189 * that one discovery thread won't free a ndlp while another discovery thread 3190 * is using it. 3191 */ 3192 struct lpfc_nodelist * 3193 lpfc_nlp_get(struct lpfc_nodelist *ndlp) 3194 { 3195 struct lpfc_hba *phba; 3196 unsigned long flags; 3197 3198 if (ndlp) { 3199 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE, 3200 "node get: did:x%x flg:x%x refcnt:x%x", 3201 ndlp->nlp_DID, ndlp->nlp_flag, 3202 atomic_read(&ndlp->kref.refcount)); 3203 /* The check of ndlp usage to prevent incrementing the 3204 * ndlp reference count that is in the process of being 3205 * released. 3206 */ 3207 phba = ndlp->vport->phba; 3208 spin_lock_irqsave(&phba->ndlp_lock, flags); 3209 if (!NLP_CHK_NODE_ACT(ndlp) || NLP_CHK_FREE_ACK(ndlp)) { 3210 spin_unlock_irqrestore(&phba->ndlp_lock, flags); 3211 lpfc_printf_vlog(ndlp->vport, KERN_WARNING, LOG_NODE, 3212 "0276 lpfc_nlp_get: ndlp:x%p " 3213 "usgmap:x%x refcnt:%d\n", 3214 (void *)ndlp, ndlp->nlp_usg_map, 3215 atomic_read(&ndlp->kref.refcount)); 3216 return NULL; 3217 } else 3218 kref_get(&ndlp->kref); 3219 spin_unlock_irqrestore(&phba->ndlp_lock, flags); 3220 } 3221 return ndlp; 3222 } 3223 3224 /* This routine decrements the reference count for a ndlp structure. If the 3225 * count goes to 0, this indicates the the associated nodelist should be 3226 * freed. Returning 1 indicates the ndlp resource has been released; on the 3227 * other hand, returning 0 indicates the ndlp resource has not been released 3228 * yet. 3229 */ 3230 int 3231 lpfc_nlp_put(struct lpfc_nodelist *ndlp) 3232 { 3233 struct lpfc_hba *phba; 3234 unsigned long flags; 3235 3236 if (!ndlp) 3237 return 1; 3238 3239 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE, 3240 "node put: did:x%x flg:x%x refcnt:x%x", 3241 ndlp->nlp_DID, ndlp->nlp_flag, 3242 atomic_read(&ndlp->kref.refcount)); 3243 phba = ndlp->vport->phba; 3244 spin_lock_irqsave(&phba->ndlp_lock, flags); 3245 /* Check the ndlp memory free acknowledge flag to avoid the 3246 * possible race condition that kref_put got invoked again 3247 * after previous one has done ndlp memory free. 3248 */ 3249 if (NLP_CHK_FREE_ACK(ndlp)) { 3250 spin_unlock_irqrestore(&phba->ndlp_lock, flags); 3251 lpfc_printf_vlog(ndlp->vport, KERN_WARNING, LOG_NODE, 3252 "0274 lpfc_nlp_put: ndlp:x%p " 3253 "usgmap:x%x refcnt:%d\n", 3254 (void *)ndlp, ndlp->nlp_usg_map, 3255 atomic_read(&ndlp->kref.refcount)); 3256 return 1; 3257 } 3258 /* Check the ndlp inactivate log flag to avoid the possible 3259 * race condition that kref_put got invoked again after ndlp 3260 * is already in inactivating state. 3261 */ 3262 if (NLP_CHK_IACT_REQ(ndlp)) { 3263 spin_unlock_irqrestore(&phba->ndlp_lock, flags); 3264 lpfc_printf_vlog(ndlp->vport, KERN_WARNING, LOG_NODE, 3265 "0275 lpfc_nlp_put: ndlp:x%p " 3266 "usgmap:x%x refcnt:%d\n", 3267 (void *)ndlp, ndlp->nlp_usg_map, 3268 atomic_read(&ndlp->kref.refcount)); 3269 return 1; 3270 } 3271 /* For last put, mark the ndlp usage flags to make sure no 3272 * other kref_get and kref_put on the same ndlp shall get 3273 * in between the process when the final kref_put has been 3274 * invoked on this ndlp. 3275 */ 3276 if (atomic_read(&ndlp->kref.refcount) == 1) { 3277 /* Indicate ndlp is put to inactive state. */ 3278 NLP_SET_IACT_REQ(ndlp); 3279 /* Acknowledge ndlp memory free has been seen. */ 3280 if (NLP_CHK_FREE_REQ(ndlp)) 3281 NLP_SET_FREE_ACK(ndlp); 3282 } 3283 spin_unlock_irqrestore(&phba->ndlp_lock, flags); 3284 /* Note, the kref_put returns 1 when decrementing a reference 3285 * count that was 1, it invokes the release callback function, 3286 * but it still left the reference count as 1 (not actually 3287 * performs the last decrementation). Otherwise, it actually 3288 * decrements the reference count and returns 0. 3289 */ 3290 return kref_put(&ndlp->kref, lpfc_nlp_release); 3291 } 3292 3293 /* This routine free's the specified nodelist if it is not in use 3294 * by any other discovery thread. This routine returns 1 if the 3295 * ndlp has been freed. A return value of 0 indicates the ndlp is 3296 * not yet been released. 3297 */ 3298 int 3299 lpfc_nlp_not_used(struct lpfc_nodelist *ndlp) 3300 { 3301 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE, 3302 "node not used: did:x%x flg:x%x refcnt:x%x", 3303 ndlp->nlp_DID, ndlp->nlp_flag, 3304 atomic_read(&ndlp->kref.refcount)); 3305 if (atomic_read(&ndlp->kref.refcount) == 1) 3306 if (lpfc_nlp_put(ndlp)) 3307 return 1; 3308 return 0; 3309 } 3310