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_disc.h" 34 #include "lpfc_sli.h" 35 #include "lpfc_scsi.h" 36 #include "lpfc.h" 37 #include "lpfc_logmsg.h" 38 #include "lpfc_crtn.h" 39 #include "lpfc_vport.h" 40 #include "lpfc_debugfs.h" 41 42 /* AlpaArray for assignment of scsid for scan-down and bind_method */ 43 static uint8_t lpfcAlpaArray[] = { 44 0xEF, 0xE8, 0xE4, 0xE2, 0xE1, 0xE0, 0xDC, 0xDA, 0xD9, 0xD6, 45 0xD5, 0xD4, 0xD3, 0xD2, 0xD1, 0xCE, 0xCD, 0xCC, 0xCB, 0xCA, 46 0xC9, 0xC7, 0xC6, 0xC5, 0xC3, 0xBC, 0xBA, 0xB9, 0xB6, 0xB5, 47 0xB4, 0xB3, 0xB2, 0xB1, 0xAE, 0xAD, 0xAC, 0xAB, 0xAA, 0xA9, 48 0xA7, 0xA6, 0xA5, 0xA3, 0x9F, 0x9E, 0x9D, 0x9B, 0x98, 0x97, 49 0x90, 0x8F, 0x88, 0x84, 0x82, 0x81, 0x80, 0x7C, 0x7A, 0x79, 50 0x76, 0x75, 0x74, 0x73, 0x72, 0x71, 0x6E, 0x6D, 0x6C, 0x6B, 51 0x6A, 0x69, 0x67, 0x66, 0x65, 0x63, 0x5C, 0x5A, 0x59, 0x56, 52 0x55, 0x54, 0x53, 0x52, 0x51, 0x4E, 0x4D, 0x4C, 0x4B, 0x4A, 53 0x49, 0x47, 0x46, 0x45, 0x43, 0x3C, 0x3A, 0x39, 0x36, 0x35, 54 0x34, 0x33, 0x32, 0x31, 0x2E, 0x2D, 0x2C, 0x2B, 0x2A, 0x29, 55 0x27, 0x26, 0x25, 0x23, 0x1F, 0x1E, 0x1D, 0x1B, 0x18, 0x17, 56 0x10, 0x0F, 0x08, 0x04, 0x02, 0x01 57 }; 58 59 static void lpfc_disc_timeout_handler(struct lpfc_vport *); 60 static void lpfc_disc_flush_list(struct lpfc_vport *vport); 61 62 void 63 lpfc_terminate_rport_io(struct fc_rport *rport) 64 { 65 struct lpfc_rport_data *rdata; 66 struct lpfc_nodelist * ndlp; 67 struct lpfc_hba *phba; 68 69 rdata = rport->dd_data; 70 ndlp = rdata->pnode; 71 72 if (!ndlp || !NLP_CHK_NODE_ACT(ndlp)) { 73 if (rport->roles & FC_RPORT_ROLE_FCP_TARGET) 74 printk(KERN_ERR "Cannot find remote node" 75 " to terminate I/O Data x%x\n", 76 rport->port_id); 77 return; 78 } 79 80 phba = ndlp->vport->phba; 81 82 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_RPORT, 83 "rport terminate: sid:x%x did:x%x flg:x%x", 84 ndlp->nlp_sid, ndlp->nlp_DID, ndlp->nlp_flag); 85 86 if (ndlp->nlp_sid != NLP_NO_SID) { 87 lpfc_sli_abort_iocb(ndlp->vport, 88 &phba->sli.ring[phba->sli.fcp_ring], 89 ndlp->nlp_sid, 0, LPFC_CTX_TGT); 90 } 91 92 /* 93 * A device is normally blocked for rediscovery and unblocked when 94 * devloss timeout happens. In case a vport is removed or driver 95 * unloaded before devloss timeout happens, we need to unblock here. 96 */ 97 scsi_target_unblock(&rport->dev); 98 return; 99 } 100 101 /* 102 * This function will be called when dev_loss_tmo fire. 103 */ 104 void 105 lpfc_dev_loss_tmo_callbk(struct fc_rport *rport) 106 { 107 struct lpfc_rport_data *rdata; 108 struct lpfc_nodelist * ndlp; 109 struct lpfc_vport *vport; 110 struct lpfc_hba *phba; 111 struct lpfc_work_evt *evtp; 112 int put_node; 113 int put_rport; 114 115 rdata = rport->dd_data; 116 ndlp = rdata->pnode; 117 if (!ndlp || !NLP_CHK_NODE_ACT(ndlp)) 118 return; 119 120 vport = ndlp->vport; 121 phba = vport->phba; 122 123 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT, 124 "rport devlosscb: sid:x%x did:x%x flg:x%x", 125 ndlp->nlp_sid, ndlp->nlp_DID, ndlp->nlp_flag); 126 127 /* Don't defer this if we are in the process of deleting the vport 128 * or unloading the driver. The unload will cleanup the node 129 * appropriately we just need to cleanup the ndlp rport info here. 130 */ 131 if (vport->load_flag & FC_UNLOADING) { 132 put_node = rdata->pnode != NULL; 133 put_rport = ndlp->rport != NULL; 134 rdata->pnode = NULL; 135 ndlp->rport = NULL; 136 if (put_node) 137 lpfc_nlp_put(ndlp); 138 if (put_rport) 139 put_device(&rport->dev); 140 return; 141 } 142 143 if (ndlp->nlp_state == NLP_STE_MAPPED_NODE) 144 return; 145 146 evtp = &ndlp->dev_loss_evt; 147 148 if (!list_empty(&evtp->evt_listp)) 149 return; 150 151 spin_lock_irq(&phba->hbalock); 152 /* We need to hold the node by incrementing the reference 153 * count until this queued work is done 154 */ 155 evtp->evt_arg1 = lpfc_nlp_get(ndlp); 156 evtp->evt = LPFC_EVT_DEV_LOSS; 157 list_add_tail(&evtp->evt_listp, &phba->work_list); 158 if (phba->work_wait) 159 wake_up(phba->work_wait); 160 161 spin_unlock_irq(&phba->hbalock); 162 163 return; 164 } 165 166 /* 167 * This function is called from the worker thread when dev_loss_tmo 168 * expire. 169 */ 170 static void 171 lpfc_dev_loss_tmo_handler(struct lpfc_nodelist *ndlp) 172 { 173 struct lpfc_rport_data *rdata; 174 struct fc_rport *rport; 175 struct lpfc_vport *vport; 176 struct lpfc_hba *phba; 177 uint8_t *name; 178 int put_node; 179 int put_rport; 180 int warn_on = 0; 181 182 rport = ndlp->rport; 183 184 if (!rport) 185 return; 186 187 rdata = rport->dd_data; 188 name = (uint8_t *) &ndlp->nlp_portname; 189 vport = ndlp->vport; 190 phba = vport->phba; 191 192 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT, 193 "rport devlosstmo:did:x%x type:x%x id:x%x", 194 ndlp->nlp_DID, ndlp->nlp_type, rport->scsi_target_id); 195 196 /* Don't defer this if we are in the process of deleting the vport 197 * or unloading the driver. The unload will cleanup the node 198 * appropriately we just need to cleanup the ndlp rport info here. 199 */ 200 if (vport->load_flag & FC_UNLOADING) { 201 if (ndlp->nlp_sid != NLP_NO_SID) { 202 /* flush the target */ 203 lpfc_sli_abort_iocb(vport, 204 &phba->sli.ring[phba->sli.fcp_ring], 205 ndlp->nlp_sid, 0, LPFC_CTX_TGT); 206 } 207 put_node = rdata->pnode != NULL; 208 put_rport = ndlp->rport != NULL; 209 rdata->pnode = NULL; 210 ndlp->rport = NULL; 211 if (put_node) 212 lpfc_nlp_put(ndlp); 213 if (put_rport) 214 put_device(&rport->dev); 215 return; 216 } 217 218 if (ndlp->nlp_state == NLP_STE_MAPPED_NODE) 219 return; 220 221 if (ndlp->nlp_type & NLP_FABRIC) { 222 /* We will clean up these Nodes in linkup */ 223 put_node = rdata->pnode != NULL; 224 put_rport = ndlp->rport != NULL; 225 rdata->pnode = NULL; 226 ndlp->rport = NULL; 227 if (put_node) 228 lpfc_nlp_put(ndlp); 229 if (put_rport) 230 put_device(&rport->dev); 231 return; 232 } 233 234 if (ndlp->nlp_sid != NLP_NO_SID) { 235 warn_on = 1; 236 /* flush the target */ 237 lpfc_sli_abort_iocb(vport, &phba->sli.ring[phba->sli.fcp_ring], 238 ndlp->nlp_sid, 0, LPFC_CTX_TGT); 239 } 240 if (vport->load_flag & FC_UNLOADING) 241 warn_on = 0; 242 243 if (warn_on) { 244 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY, 245 "0203 Devloss timeout on " 246 "WWPN %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x " 247 "NPort x%06x Data: x%x x%x x%x\n", 248 *name, *(name+1), *(name+2), *(name+3), 249 *(name+4), *(name+5), *(name+6), *(name+7), 250 ndlp->nlp_DID, ndlp->nlp_flag, 251 ndlp->nlp_state, ndlp->nlp_rpi); 252 } else { 253 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, 254 "0204 Devloss timeout on " 255 "WWPN %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x " 256 "NPort x%06x Data: x%x x%x x%x\n", 257 *name, *(name+1), *(name+2), *(name+3), 258 *(name+4), *(name+5), *(name+6), *(name+7), 259 ndlp->nlp_DID, ndlp->nlp_flag, 260 ndlp->nlp_state, ndlp->nlp_rpi); 261 } 262 263 put_node = rdata->pnode != NULL; 264 put_rport = ndlp->rport != NULL; 265 rdata->pnode = NULL; 266 ndlp->rport = NULL; 267 if (put_node) 268 lpfc_nlp_put(ndlp); 269 if (put_rport) 270 put_device(&rport->dev); 271 272 if (!(vport->load_flag & FC_UNLOADING) && 273 !(ndlp->nlp_flag & NLP_DELAY_TMO) && 274 !(ndlp->nlp_flag & NLP_NPR_2B_DISC) && 275 (ndlp->nlp_state != NLP_STE_UNMAPPED_NODE)) 276 lpfc_disc_state_machine(vport, ndlp, NULL, NLP_EVT_DEVICE_RM); 277 } 278 279 280 void 281 lpfc_worker_wake_up(struct lpfc_hba *phba) 282 { 283 wake_up(phba->work_wait); 284 return; 285 } 286 287 static void 288 lpfc_work_list_done(struct lpfc_hba *phba) 289 { 290 struct lpfc_work_evt *evtp = NULL; 291 struct lpfc_nodelist *ndlp; 292 int free_evt; 293 294 spin_lock_irq(&phba->hbalock); 295 while (!list_empty(&phba->work_list)) { 296 list_remove_head((&phba->work_list), evtp, typeof(*evtp), 297 evt_listp); 298 spin_unlock_irq(&phba->hbalock); 299 free_evt = 1; 300 switch (evtp->evt) { 301 case LPFC_EVT_ELS_RETRY: 302 ndlp = (struct lpfc_nodelist *) (evtp->evt_arg1); 303 lpfc_els_retry_delay_handler(ndlp); 304 free_evt = 0; /* evt is part of ndlp */ 305 /* decrement the node reference count held 306 * for this queued work 307 */ 308 lpfc_nlp_put(ndlp); 309 break; 310 case LPFC_EVT_DEV_LOSS: 311 ndlp = (struct lpfc_nodelist *)(evtp->evt_arg1); 312 lpfc_dev_loss_tmo_handler(ndlp); 313 free_evt = 0; 314 /* decrement the node reference count held for 315 * this queued work 316 */ 317 lpfc_nlp_put(ndlp); 318 break; 319 case LPFC_EVT_ONLINE: 320 if (phba->link_state < LPFC_LINK_DOWN) 321 *(int *) (evtp->evt_arg1) = lpfc_online(phba); 322 else 323 *(int *) (evtp->evt_arg1) = 0; 324 complete((struct completion *)(evtp->evt_arg2)); 325 break; 326 case LPFC_EVT_OFFLINE_PREP: 327 if (phba->link_state >= LPFC_LINK_DOWN) 328 lpfc_offline_prep(phba); 329 *(int *)(evtp->evt_arg1) = 0; 330 complete((struct completion *)(evtp->evt_arg2)); 331 break; 332 case LPFC_EVT_OFFLINE: 333 lpfc_offline(phba); 334 lpfc_sli_brdrestart(phba); 335 *(int *)(evtp->evt_arg1) = 336 lpfc_sli_brdready(phba, HS_FFRDY | HS_MBRDY); 337 lpfc_unblock_mgmt_io(phba); 338 complete((struct completion *)(evtp->evt_arg2)); 339 break; 340 case LPFC_EVT_WARM_START: 341 lpfc_offline(phba); 342 lpfc_reset_barrier(phba); 343 lpfc_sli_brdreset(phba); 344 lpfc_hba_down_post(phba); 345 *(int *)(evtp->evt_arg1) = 346 lpfc_sli_brdready(phba, HS_MBRDY); 347 lpfc_unblock_mgmt_io(phba); 348 complete((struct completion *)(evtp->evt_arg2)); 349 break; 350 case LPFC_EVT_KILL: 351 lpfc_offline(phba); 352 *(int *)(evtp->evt_arg1) 353 = (phba->pport->stopped) 354 ? 0 : lpfc_sli_brdkill(phba); 355 lpfc_unblock_mgmt_io(phba); 356 complete((struct completion *)(evtp->evt_arg2)); 357 break; 358 } 359 if (free_evt) 360 kfree(evtp); 361 spin_lock_irq(&phba->hbalock); 362 } 363 spin_unlock_irq(&phba->hbalock); 364 365 } 366 367 static void 368 lpfc_work_done(struct lpfc_hba *phba) 369 { 370 struct lpfc_sli_ring *pring; 371 uint32_t ha_copy, status, control, work_port_events; 372 struct lpfc_vport **vports; 373 struct lpfc_vport *vport; 374 int i; 375 376 spin_lock_irq(&phba->hbalock); 377 ha_copy = phba->work_ha; 378 phba->work_ha = 0; 379 spin_unlock_irq(&phba->hbalock); 380 381 if (ha_copy & HA_ERATT) 382 lpfc_handle_eratt(phba); 383 384 if (ha_copy & HA_MBATT) 385 lpfc_sli_handle_mb_event(phba); 386 387 if (ha_copy & HA_LATT) 388 lpfc_handle_latt(phba); 389 vports = lpfc_create_vport_work_array(phba); 390 if (vports != NULL) 391 for(i = 0; i <= phba->max_vpi; i++) { 392 /* 393 * We could have no vports in array if unloading, so if 394 * this happens then just use the pport 395 */ 396 if (vports[i] == NULL && i == 0) 397 vport = phba->pport; 398 else 399 vport = vports[i]; 400 if (vport == NULL) 401 break; 402 spin_lock_irq(&vport->work_port_lock); 403 work_port_events = vport->work_port_events; 404 vport->work_port_events &= ~work_port_events; 405 spin_unlock_irq(&vport->work_port_lock); 406 if (work_port_events & WORKER_DISC_TMO) 407 lpfc_disc_timeout_handler(vport); 408 if (work_port_events & WORKER_ELS_TMO) 409 lpfc_els_timeout_handler(vport); 410 if (work_port_events & WORKER_HB_TMO) 411 lpfc_hb_timeout_handler(phba); 412 if (work_port_events & WORKER_MBOX_TMO) 413 lpfc_mbox_timeout_handler(phba); 414 if (work_port_events & WORKER_FABRIC_BLOCK_TMO) 415 lpfc_unblock_fabric_iocbs(phba); 416 if (work_port_events & WORKER_FDMI_TMO) 417 lpfc_fdmi_timeout_handler(vport); 418 if (work_port_events & WORKER_RAMP_DOWN_QUEUE) 419 lpfc_ramp_down_queue_handler(phba); 420 if (work_port_events & WORKER_RAMP_UP_QUEUE) 421 lpfc_ramp_up_queue_handler(phba); 422 } 423 lpfc_destroy_vport_work_array(phba, vports); 424 425 pring = &phba->sli.ring[LPFC_ELS_RING]; 426 status = (ha_copy & (HA_RXMASK << (4*LPFC_ELS_RING))); 427 status >>= (4*LPFC_ELS_RING); 428 if ((status & HA_RXMASK) 429 || (pring->flag & LPFC_DEFERRED_RING_EVENT)) { 430 if (pring->flag & LPFC_STOP_IOCB_EVENT) { 431 pring->flag |= LPFC_DEFERRED_RING_EVENT; 432 } else { 433 pring->flag &= ~LPFC_DEFERRED_RING_EVENT; 434 lpfc_sli_handle_slow_ring_event(phba, pring, 435 (status & 436 HA_RXMASK)); 437 } 438 /* 439 * Turn on Ring interrupts 440 */ 441 spin_lock_irq(&phba->hbalock); 442 control = readl(phba->HCregaddr); 443 if (!(control & (HC_R0INT_ENA << LPFC_ELS_RING))) { 444 lpfc_debugfs_slow_ring_trc(phba, 445 "WRK Enable ring: cntl:x%x hacopy:x%x", 446 control, ha_copy, 0); 447 448 control |= (HC_R0INT_ENA << LPFC_ELS_RING); 449 writel(control, phba->HCregaddr); 450 readl(phba->HCregaddr); /* flush */ 451 } 452 else { 453 lpfc_debugfs_slow_ring_trc(phba, 454 "WRK Ring ok: cntl:x%x hacopy:x%x", 455 control, ha_copy, 0); 456 } 457 spin_unlock_irq(&phba->hbalock); 458 } 459 lpfc_work_list_done(phba); 460 } 461 462 static int 463 check_work_wait_done(struct lpfc_hba *phba) 464 { 465 struct lpfc_vport *vport; 466 struct lpfc_sli_ring *pring = &phba->sli.ring[LPFC_ELS_RING]; 467 int rc = 0; 468 469 spin_lock_irq(&phba->hbalock); 470 list_for_each_entry(vport, &phba->port_list, listentry) { 471 if (vport->work_port_events) { 472 rc = 1; 473 break; 474 } 475 } 476 if (rc || phba->work_ha || (!list_empty(&phba->work_list)) || 477 kthread_should_stop() || pring->flag & LPFC_DEFERRED_RING_EVENT) { 478 rc = 1; 479 phba->work_found++; 480 } else 481 phba->work_found = 0; 482 spin_unlock_irq(&phba->hbalock); 483 return rc; 484 } 485 486 487 int 488 lpfc_do_work(void *p) 489 { 490 struct lpfc_hba *phba = p; 491 int rc; 492 DECLARE_WAIT_QUEUE_HEAD_ONSTACK(work_waitq); 493 494 set_user_nice(current, -20); 495 phba->work_wait = &work_waitq; 496 phba->work_found = 0; 497 498 while (1) { 499 500 rc = wait_event_interruptible(work_waitq, 501 check_work_wait_done(phba)); 502 503 BUG_ON(rc); 504 505 if (kthread_should_stop()) 506 break; 507 508 lpfc_work_done(phba); 509 510 /* If there is alot of slow ring work, like during link up 511 * check_work_wait_done() may cause this thread to not give 512 * up the CPU for very long periods of time. This may cause 513 * soft lockups or other problems. To avoid these situations 514 * give up the CPU here after LPFC_MAX_WORKER_ITERATION 515 * consecutive iterations. 516 */ 517 if (phba->work_found >= LPFC_MAX_WORKER_ITERATION) { 518 phba->work_found = 0; 519 schedule(); 520 } 521 } 522 spin_lock_irq(&phba->hbalock); 523 phba->work_wait = NULL; 524 spin_unlock_irq(&phba->hbalock); 525 return 0; 526 } 527 528 /* 529 * This is only called to handle FC worker events. Since this a rare 530 * occurance, we allocate a struct lpfc_work_evt structure here instead of 531 * embedding it in the IOCB. 532 */ 533 int 534 lpfc_workq_post_event(struct lpfc_hba *phba, void *arg1, void *arg2, 535 uint32_t evt) 536 { 537 struct lpfc_work_evt *evtp; 538 unsigned long flags; 539 540 /* 541 * All Mailbox completions and LPFC_ELS_RING rcv ring IOCB events will 542 * be queued to worker thread for processing 543 */ 544 evtp = kmalloc(sizeof(struct lpfc_work_evt), GFP_ATOMIC); 545 if (!evtp) 546 return 0; 547 548 evtp->evt_arg1 = arg1; 549 evtp->evt_arg2 = arg2; 550 evtp->evt = evt; 551 552 spin_lock_irqsave(&phba->hbalock, flags); 553 list_add_tail(&evtp->evt_listp, &phba->work_list); 554 if (phba->work_wait) 555 lpfc_worker_wake_up(phba); 556 spin_unlock_irqrestore(&phba->hbalock, flags); 557 558 return 1; 559 } 560 561 void 562 lpfc_cleanup_rpis(struct lpfc_vport *vport, int remove) 563 { 564 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 565 struct lpfc_hba *phba = vport->phba; 566 struct lpfc_nodelist *ndlp, *next_ndlp; 567 int rc; 568 569 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) { 570 if (!NLP_CHK_NODE_ACT(ndlp)) 571 continue; 572 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE) 573 continue; 574 if ((phba->sli3_options & LPFC_SLI3_VPORT_TEARDOWN) || 575 ((vport->port_type == LPFC_NPIV_PORT) && 576 (ndlp->nlp_DID == NameServer_DID))) 577 lpfc_unreg_rpi(vport, ndlp); 578 579 /* Leave Fabric nodes alone on link down */ 580 if (!remove && ndlp->nlp_type & NLP_FABRIC) 581 continue; 582 rc = lpfc_disc_state_machine(vport, ndlp, NULL, 583 remove 584 ? NLP_EVT_DEVICE_RM 585 : NLP_EVT_DEVICE_RECOVERY); 586 } 587 if (phba->sli3_options & LPFC_SLI3_VPORT_TEARDOWN) { 588 lpfc_mbx_unreg_vpi(vport); 589 spin_lock_irq(shost->host_lock); 590 vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI; 591 spin_unlock_irq(shost->host_lock); 592 } 593 } 594 595 void 596 lpfc_port_link_failure(struct lpfc_vport *vport) 597 { 598 /* Cleanup any outstanding RSCN activity */ 599 lpfc_els_flush_rscn(vport); 600 601 /* Cleanup any outstanding ELS commands */ 602 lpfc_els_flush_cmd(vport); 603 604 lpfc_cleanup_rpis(vport, 0); 605 606 /* Turn off discovery timer if its running */ 607 lpfc_can_disctmo(vport); 608 } 609 610 static void 611 lpfc_linkdown_port(struct lpfc_vport *vport) 612 { 613 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 614 615 fc_host_post_event(shost, fc_get_event_number(), FCH_EVT_LINKDOWN, 0); 616 617 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, 618 "Link Down: state:x%x rtry:x%x flg:x%x", 619 vport->port_state, vport->fc_ns_retry, vport->fc_flag); 620 621 lpfc_port_link_failure(vport); 622 623 } 624 625 int 626 lpfc_linkdown(struct lpfc_hba *phba) 627 { 628 struct lpfc_vport *vport = phba->pport; 629 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 630 struct lpfc_vport **vports; 631 LPFC_MBOXQ_t *mb; 632 int i; 633 634 if (phba->link_state == LPFC_LINK_DOWN) 635 return 0; 636 spin_lock_irq(&phba->hbalock); 637 if (phba->link_state > LPFC_LINK_DOWN) { 638 phba->link_state = LPFC_LINK_DOWN; 639 phba->pport->fc_flag &= ~FC_LBIT; 640 } 641 spin_unlock_irq(&phba->hbalock); 642 vports = lpfc_create_vport_work_array(phba); 643 if (vports != NULL) 644 for(i = 0; i <= phba->max_vpi && vports[i] != NULL; i++) { 645 /* Issue a LINK DOWN event to all nodes */ 646 lpfc_linkdown_port(vports[i]); 647 } 648 lpfc_destroy_vport_work_array(phba, vports); 649 /* Clean up any firmware default rpi's */ 650 mb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 651 if (mb) { 652 lpfc_unreg_did(phba, 0xffff, 0xffffffff, mb); 653 mb->vport = vport; 654 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl; 655 if (lpfc_sli_issue_mbox(phba, mb, MBX_NOWAIT) 656 == MBX_NOT_FINISHED) { 657 mempool_free(mb, phba->mbox_mem_pool); 658 } 659 } 660 661 /* Setup myDID for link up if we are in pt2pt mode */ 662 if (phba->pport->fc_flag & FC_PT2PT) { 663 phba->pport->fc_myDID = 0; 664 mb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 665 if (mb) { 666 lpfc_config_link(phba, mb); 667 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl; 668 mb->vport = vport; 669 if (lpfc_sli_issue_mbox(phba, mb, MBX_NOWAIT) 670 == MBX_NOT_FINISHED) { 671 mempool_free(mb, phba->mbox_mem_pool); 672 } 673 } 674 spin_lock_irq(shost->host_lock); 675 phba->pport->fc_flag &= ~(FC_PT2PT | FC_PT2PT_PLOGI); 676 spin_unlock_irq(shost->host_lock); 677 } 678 679 return 0; 680 } 681 682 static void 683 lpfc_linkup_cleanup_nodes(struct lpfc_vport *vport) 684 { 685 struct lpfc_nodelist *ndlp; 686 687 list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) { 688 if (!NLP_CHK_NODE_ACT(ndlp)) 689 continue; 690 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE) 691 continue; 692 if (ndlp->nlp_type & NLP_FABRIC) { 693 /* On Linkup its safe to clean up the ndlp 694 * from Fabric connections. 695 */ 696 if (ndlp->nlp_DID != Fabric_DID) 697 lpfc_unreg_rpi(vport, ndlp); 698 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE); 699 } else if (!(ndlp->nlp_flag & NLP_NPR_ADISC)) { 700 /* Fail outstanding IO now since device is 701 * marked for PLOGI. 702 */ 703 lpfc_unreg_rpi(vport, ndlp); 704 } 705 } 706 } 707 708 static void 709 lpfc_linkup_port(struct lpfc_vport *vport) 710 { 711 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 712 struct lpfc_hba *phba = vport->phba; 713 714 if ((vport->load_flag & FC_UNLOADING) != 0) 715 return; 716 717 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, 718 "Link Up: top:x%x speed:x%x flg:x%x", 719 phba->fc_topology, phba->fc_linkspeed, phba->link_flag); 720 721 /* If NPIV is not enabled, only bring the physical port up */ 722 if (!(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) && 723 (vport != phba->pport)) 724 return; 725 726 fc_host_post_event(shost, fc_get_event_number(), FCH_EVT_LINKUP, 0); 727 728 spin_lock_irq(shost->host_lock); 729 vport->fc_flag &= ~(FC_PT2PT | FC_PT2PT_PLOGI | FC_ABORT_DISCOVERY | 730 FC_RSCN_MODE | FC_NLP_MORE | FC_RSCN_DISCOVERY); 731 vport->fc_flag |= FC_NDISC_ACTIVE; 732 vport->fc_ns_retry = 0; 733 spin_unlock_irq(shost->host_lock); 734 735 if (vport->fc_flag & FC_LBIT) 736 lpfc_linkup_cleanup_nodes(vport); 737 738 } 739 740 static int 741 lpfc_linkup(struct lpfc_hba *phba) 742 { 743 struct lpfc_vport **vports; 744 int i; 745 746 phba->link_state = LPFC_LINK_UP; 747 748 /* Unblock fabric iocbs if they are blocked */ 749 clear_bit(FABRIC_COMANDS_BLOCKED, &phba->bit_flags); 750 del_timer_sync(&phba->fabric_block_timer); 751 752 vports = lpfc_create_vport_work_array(phba); 753 if (vports != NULL) 754 for(i = 0; i <= phba->max_vpi && vports[i] != NULL; i++) 755 lpfc_linkup_port(vports[i]); 756 lpfc_destroy_vport_work_array(phba, vports); 757 if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) 758 lpfc_issue_clear_la(phba, phba->pport); 759 760 return 0; 761 } 762 763 /* 764 * This routine handles processing a CLEAR_LA mailbox 765 * command upon completion. It is setup in the LPFC_MBOXQ 766 * as the completion routine when the command is 767 * handed off to the SLI layer. 768 */ 769 static void 770 lpfc_mbx_cmpl_clear_la(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 771 { 772 struct lpfc_vport *vport = pmb->vport; 773 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 774 struct lpfc_sli *psli = &phba->sli; 775 MAILBOX_t *mb = &pmb->mb; 776 uint32_t control; 777 778 /* Since we don't do discovery right now, turn these off here */ 779 psli->ring[psli->extra_ring].flag &= ~LPFC_STOP_IOCB_EVENT; 780 psli->ring[psli->fcp_ring].flag &= ~LPFC_STOP_IOCB_EVENT; 781 psli->ring[psli->next_ring].flag &= ~LPFC_STOP_IOCB_EVENT; 782 783 /* Check for error */ 784 if ((mb->mbxStatus) && (mb->mbxStatus != 0x1601)) { 785 /* CLEAR_LA mbox error <mbxStatus> state <hba_state> */ 786 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX, 787 "0320 CLEAR_LA mbxStatus error x%x hba " 788 "state x%x\n", 789 mb->mbxStatus, vport->port_state); 790 phba->link_state = LPFC_HBA_ERROR; 791 goto out; 792 } 793 794 if (vport->port_type == LPFC_PHYSICAL_PORT) 795 phba->link_state = LPFC_HBA_READY; 796 797 spin_lock_irq(&phba->hbalock); 798 psli->sli_flag |= LPFC_PROCESS_LA; 799 control = readl(phba->HCregaddr); 800 control |= HC_LAINT_ENA; 801 writel(control, phba->HCregaddr); 802 readl(phba->HCregaddr); /* flush */ 803 spin_unlock_irq(&phba->hbalock); 804 mempool_free(pmb, phba->mbox_mem_pool); 805 return; 806 807 out: 808 /* Device Discovery completes */ 809 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, 810 "0225 Device Discovery completes\n"); 811 mempool_free(pmb, phba->mbox_mem_pool); 812 813 spin_lock_irq(shost->host_lock); 814 vport->fc_flag &= ~FC_ABORT_DISCOVERY; 815 spin_unlock_irq(shost->host_lock); 816 817 lpfc_can_disctmo(vport); 818 819 /* turn on Link Attention interrupts */ 820 821 spin_lock_irq(&phba->hbalock); 822 psli->sli_flag |= LPFC_PROCESS_LA; 823 control = readl(phba->HCregaddr); 824 control |= HC_LAINT_ENA; 825 writel(control, phba->HCregaddr); 826 readl(phba->HCregaddr); /* flush */ 827 spin_unlock_irq(&phba->hbalock); 828 829 return; 830 } 831 832 833 static void 834 lpfc_mbx_cmpl_local_config_link(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 835 { 836 struct lpfc_vport *vport = pmb->vport; 837 838 if (pmb->mb.mbxStatus) 839 goto out; 840 841 mempool_free(pmb, phba->mbox_mem_pool); 842 843 if (phba->fc_topology == TOPOLOGY_LOOP && 844 vport->fc_flag & FC_PUBLIC_LOOP && 845 !(vport->fc_flag & FC_LBIT)) { 846 /* Need to wait for FAN - use discovery timer 847 * for timeout. port_state is identically 848 * LPFC_LOCAL_CFG_LINK while waiting for FAN 849 */ 850 lpfc_set_disctmo(vport); 851 return; 852 } 853 854 /* Start discovery by sending a FLOGI. port_state is identically 855 * LPFC_FLOGI while waiting for FLOGI cmpl 856 */ 857 if (vport->port_state != LPFC_FLOGI) { 858 lpfc_initial_flogi(vport); 859 } 860 return; 861 862 out: 863 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX, 864 "0306 CONFIG_LINK mbxStatus error x%x " 865 "HBA state x%x\n", 866 pmb->mb.mbxStatus, vport->port_state); 867 mempool_free(pmb, phba->mbox_mem_pool); 868 869 lpfc_linkdown(phba); 870 871 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY, 872 "0200 CONFIG_LINK bad hba state x%x\n", 873 vport->port_state); 874 875 lpfc_issue_clear_la(phba, vport); 876 return; 877 } 878 879 static void 880 lpfc_mbx_cmpl_read_sparam(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 881 { 882 MAILBOX_t *mb = &pmb->mb; 883 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) pmb->context1; 884 struct lpfc_vport *vport = pmb->vport; 885 886 887 /* Check for error */ 888 if (mb->mbxStatus) { 889 /* READ_SPARAM mbox error <mbxStatus> state <hba_state> */ 890 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX, 891 "0319 READ_SPARAM mbxStatus error x%x " 892 "hba state x%x>\n", 893 mb->mbxStatus, vport->port_state); 894 lpfc_linkdown(phba); 895 goto out; 896 } 897 898 memcpy((uint8_t *) &vport->fc_sparam, (uint8_t *) mp->virt, 899 sizeof (struct serv_parm)); 900 if (phba->cfg_soft_wwnn) 901 u64_to_wwn(phba->cfg_soft_wwnn, 902 vport->fc_sparam.nodeName.u.wwn); 903 if (phba->cfg_soft_wwpn) 904 u64_to_wwn(phba->cfg_soft_wwpn, 905 vport->fc_sparam.portName.u.wwn); 906 memcpy(&vport->fc_nodename, &vport->fc_sparam.nodeName, 907 sizeof(vport->fc_nodename)); 908 memcpy(&vport->fc_portname, &vport->fc_sparam.portName, 909 sizeof(vport->fc_portname)); 910 if (vport->port_type == LPFC_PHYSICAL_PORT) { 911 memcpy(&phba->wwnn, &vport->fc_nodename, sizeof(phba->wwnn)); 912 memcpy(&phba->wwpn, &vport->fc_portname, sizeof(phba->wwnn)); 913 } 914 915 lpfc_mbuf_free(phba, mp->virt, mp->phys); 916 kfree(mp); 917 mempool_free(pmb, phba->mbox_mem_pool); 918 return; 919 920 out: 921 pmb->context1 = NULL; 922 lpfc_mbuf_free(phba, mp->virt, mp->phys); 923 kfree(mp); 924 lpfc_issue_clear_la(phba, vport); 925 mempool_free(pmb, phba->mbox_mem_pool); 926 return; 927 } 928 929 static void 930 lpfc_mbx_process_link_up(struct lpfc_hba *phba, READ_LA_VAR *la) 931 { 932 struct lpfc_vport *vport = phba->pport; 933 LPFC_MBOXQ_t *sparam_mbox, *cfglink_mbox; 934 int i; 935 struct lpfc_dmabuf *mp; 936 int rc; 937 938 sparam_mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 939 cfglink_mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 940 941 spin_lock_irq(&phba->hbalock); 942 switch (la->UlnkSpeed) { 943 case LA_1GHZ_LINK: 944 phba->fc_linkspeed = LA_1GHZ_LINK; 945 break; 946 case LA_2GHZ_LINK: 947 phba->fc_linkspeed = LA_2GHZ_LINK; 948 break; 949 case LA_4GHZ_LINK: 950 phba->fc_linkspeed = LA_4GHZ_LINK; 951 break; 952 case LA_8GHZ_LINK: 953 phba->fc_linkspeed = LA_8GHZ_LINK; 954 break; 955 default: 956 phba->fc_linkspeed = LA_UNKNW_LINK; 957 break; 958 } 959 960 phba->fc_topology = la->topology; 961 phba->link_flag &= ~LS_NPIV_FAB_SUPPORTED; 962 963 if (phba->fc_topology == TOPOLOGY_LOOP) { 964 phba->sli3_options &= ~LPFC_SLI3_NPIV_ENABLED; 965 966 /* Get Loop Map information */ 967 if (la->il) 968 vport->fc_flag |= FC_LBIT; 969 970 vport->fc_myDID = la->granted_AL_PA; 971 i = la->un.lilpBde64.tus.f.bdeSize; 972 973 if (i == 0) { 974 phba->alpa_map[0] = 0; 975 } else { 976 if (vport->cfg_log_verbose & LOG_LINK_EVENT) { 977 int numalpa, j, k; 978 union { 979 uint8_t pamap[16]; 980 struct { 981 uint32_t wd1; 982 uint32_t wd2; 983 uint32_t wd3; 984 uint32_t wd4; 985 } pa; 986 } un; 987 numalpa = phba->alpa_map[0]; 988 j = 0; 989 while (j < numalpa) { 990 memset(un.pamap, 0, 16); 991 for (k = 1; j < numalpa; k++) { 992 un.pamap[k - 1] = 993 phba->alpa_map[j + 1]; 994 j++; 995 if (k == 16) 996 break; 997 } 998 /* Link Up Event ALPA map */ 999 lpfc_printf_log(phba, 1000 KERN_WARNING, 1001 LOG_LINK_EVENT, 1002 "1304 Link Up Event " 1003 "ALPA map Data: x%x " 1004 "x%x x%x x%x\n", 1005 un.pa.wd1, un.pa.wd2, 1006 un.pa.wd3, un.pa.wd4); 1007 } 1008 } 1009 } 1010 } else { 1011 if (!(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)) { 1012 if (phba->max_vpi && phba->cfg_enable_npiv && 1013 (phba->sli_rev == 3)) 1014 phba->sli3_options |= LPFC_SLI3_NPIV_ENABLED; 1015 } 1016 vport->fc_myDID = phba->fc_pref_DID; 1017 vport->fc_flag |= FC_LBIT; 1018 } 1019 spin_unlock_irq(&phba->hbalock); 1020 1021 lpfc_linkup(phba); 1022 if (sparam_mbox) { 1023 lpfc_read_sparam(phba, sparam_mbox, 0); 1024 sparam_mbox->vport = vport; 1025 sparam_mbox->mbox_cmpl = lpfc_mbx_cmpl_read_sparam; 1026 rc = lpfc_sli_issue_mbox(phba, sparam_mbox, MBX_NOWAIT); 1027 if (rc == MBX_NOT_FINISHED) { 1028 mp = (struct lpfc_dmabuf *) sparam_mbox->context1; 1029 lpfc_mbuf_free(phba, mp->virt, mp->phys); 1030 kfree(mp); 1031 mempool_free(sparam_mbox, phba->mbox_mem_pool); 1032 if (cfglink_mbox) 1033 mempool_free(cfglink_mbox, phba->mbox_mem_pool); 1034 goto out; 1035 } 1036 } 1037 1038 if (cfglink_mbox) { 1039 vport->port_state = LPFC_LOCAL_CFG_LINK; 1040 lpfc_config_link(phba, cfglink_mbox); 1041 cfglink_mbox->vport = vport; 1042 cfglink_mbox->mbox_cmpl = lpfc_mbx_cmpl_local_config_link; 1043 rc = lpfc_sli_issue_mbox(phba, cfglink_mbox, MBX_NOWAIT); 1044 if (rc != MBX_NOT_FINISHED) 1045 return; 1046 mempool_free(cfglink_mbox, phba->mbox_mem_pool); 1047 } 1048 out: 1049 lpfc_vport_set_state(vport, FC_VPORT_FAILED); 1050 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX, 1051 "0263 Discovery Mailbox error: state: 0x%x : %p %p\n", 1052 vport->port_state, sparam_mbox, cfglink_mbox); 1053 lpfc_issue_clear_la(phba, vport); 1054 return; 1055 } 1056 1057 static void 1058 lpfc_mbx_issue_link_down(struct lpfc_hba *phba) 1059 { 1060 uint32_t control; 1061 struct lpfc_sli *psli = &phba->sli; 1062 1063 lpfc_linkdown(phba); 1064 1065 /* turn on Link Attention interrupts - no CLEAR_LA needed */ 1066 spin_lock_irq(&phba->hbalock); 1067 psli->sli_flag |= LPFC_PROCESS_LA; 1068 control = readl(phba->HCregaddr); 1069 control |= HC_LAINT_ENA; 1070 writel(control, phba->HCregaddr); 1071 readl(phba->HCregaddr); /* flush */ 1072 spin_unlock_irq(&phba->hbalock); 1073 } 1074 1075 /* 1076 * This routine handles processing a READ_LA mailbox 1077 * command upon completion. It is setup in the LPFC_MBOXQ 1078 * as the completion routine when the command is 1079 * handed off to the SLI layer. 1080 */ 1081 void 1082 lpfc_mbx_cmpl_read_la(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 1083 { 1084 struct lpfc_vport *vport = pmb->vport; 1085 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 1086 READ_LA_VAR *la; 1087 MAILBOX_t *mb = &pmb->mb; 1088 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1); 1089 1090 /* Check for error */ 1091 if (mb->mbxStatus) { 1092 lpfc_printf_log(phba, KERN_INFO, LOG_LINK_EVENT, 1093 "1307 READ_LA mbox error x%x state x%x\n", 1094 mb->mbxStatus, vport->port_state); 1095 lpfc_mbx_issue_link_down(phba); 1096 phba->link_state = LPFC_HBA_ERROR; 1097 goto lpfc_mbx_cmpl_read_la_free_mbuf; 1098 } 1099 1100 la = (READ_LA_VAR *) & pmb->mb.un.varReadLA; 1101 1102 memcpy(&phba->alpa_map[0], mp->virt, 128); 1103 1104 spin_lock_irq(shost->host_lock); 1105 if (la->pb) 1106 vport->fc_flag |= FC_BYPASSED_MODE; 1107 else 1108 vport->fc_flag &= ~FC_BYPASSED_MODE; 1109 spin_unlock_irq(shost->host_lock); 1110 1111 if (((phba->fc_eventTag + 1) < la->eventTag) || 1112 (phba->fc_eventTag == la->eventTag)) { 1113 phba->fc_stat.LinkMultiEvent++; 1114 if (la->attType == AT_LINK_UP) 1115 if (phba->fc_eventTag != 0) 1116 lpfc_linkdown(phba); 1117 } 1118 1119 phba->fc_eventTag = la->eventTag; 1120 1121 if (la->attType == AT_LINK_UP) { 1122 phba->fc_stat.LinkUp++; 1123 if (phba->link_flag & LS_LOOPBACK_MODE) { 1124 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT, 1125 "1306 Link Up Event in loop back mode " 1126 "x%x received Data: x%x x%x x%x x%x\n", 1127 la->eventTag, phba->fc_eventTag, 1128 la->granted_AL_PA, la->UlnkSpeed, 1129 phba->alpa_map[0]); 1130 } else { 1131 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT, 1132 "1303 Link Up Event x%x received " 1133 "Data: x%x x%x x%x x%x\n", 1134 la->eventTag, phba->fc_eventTag, 1135 la->granted_AL_PA, la->UlnkSpeed, 1136 phba->alpa_map[0]); 1137 } 1138 lpfc_mbx_process_link_up(phba, la); 1139 } else { 1140 phba->fc_stat.LinkDown++; 1141 if (phba->link_flag & LS_LOOPBACK_MODE) { 1142 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT, 1143 "1308 Link Down Event in loop back mode " 1144 "x%x received " 1145 "Data: x%x x%x x%x\n", 1146 la->eventTag, phba->fc_eventTag, 1147 phba->pport->port_state, vport->fc_flag); 1148 } 1149 else { 1150 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT, 1151 "1305 Link Down Event x%x received " 1152 "Data: x%x x%x x%x\n", 1153 la->eventTag, phba->fc_eventTag, 1154 phba->pport->port_state, vport->fc_flag); 1155 } 1156 lpfc_mbx_issue_link_down(phba); 1157 } 1158 1159 lpfc_mbx_cmpl_read_la_free_mbuf: 1160 lpfc_mbuf_free(phba, mp->virt, mp->phys); 1161 kfree(mp); 1162 mempool_free(pmb, phba->mbox_mem_pool); 1163 return; 1164 } 1165 1166 /* 1167 * This routine handles processing a REG_LOGIN 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_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 1174 { 1175 struct lpfc_vport *vport = pmb->vport; 1176 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1); 1177 struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) pmb->context2; 1178 1179 pmb->context1 = NULL; 1180 1181 /* Good status, call state machine */ 1182 lpfc_disc_state_machine(vport, ndlp, pmb, NLP_EVT_CMPL_REG_LOGIN); 1183 lpfc_mbuf_free(phba, mp->virt, mp->phys); 1184 kfree(mp); 1185 mempool_free(pmb, phba->mbox_mem_pool); 1186 /* decrement the node reference count held for this callback 1187 * function. 1188 */ 1189 lpfc_nlp_put(ndlp); 1190 1191 return; 1192 } 1193 1194 static void 1195 lpfc_mbx_cmpl_unreg_vpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 1196 { 1197 MAILBOX_t *mb = &pmb->mb; 1198 struct lpfc_vport *vport = pmb->vport; 1199 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 1200 1201 switch (mb->mbxStatus) { 1202 case 0x0011: 1203 case 0x0020: 1204 case 0x9700: 1205 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE, 1206 "0911 cmpl_unreg_vpi, mb status = 0x%x\n", 1207 mb->mbxStatus); 1208 break; 1209 } 1210 vport->unreg_vpi_cmpl = VPORT_OK; 1211 mempool_free(pmb, phba->mbox_mem_pool); 1212 /* 1213 * This shost reference might have been taken at the beginning of 1214 * lpfc_vport_delete() 1215 */ 1216 if (vport->load_flag & FC_UNLOADING) 1217 scsi_host_put(shost); 1218 } 1219 1220 void 1221 lpfc_mbx_unreg_vpi(struct lpfc_vport *vport) 1222 { 1223 struct lpfc_hba *phba = vport->phba; 1224 LPFC_MBOXQ_t *mbox; 1225 int rc; 1226 1227 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 1228 if (!mbox) 1229 return; 1230 1231 lpfc_unreg_vpi(phba, vport->vpi, mbox); 1232 mbox->vport = vport; 1233 mbox->mbox_cmpl = lpfc_mbx_cmpl_unreg_vpi; 1234 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT); 1235 if (rc == MBX_NOT_FINISHED) { 1236 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX | LOG_VPORT, 1237 "1800 Could not issue unreg_vpi\n"); 1238 mempool_free(mbox, phba->mbox_mem_pool); 1239 vport->unreg_vpi_cmpl = VPORT_ERROR; 1240 } 1241 } 1242 1243 static void 1244 lpfc_mbx_cmpl_reg_vpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 1245 { 1246 struct lpfc_vport *vport = pmb->vport; 1247 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 1248 MAILBOX_t *mb = &pmb->mb; 1249 1250 switch (mb->mbxStatus) { 1251 case 0x0011: 1252 case 0x9601: 1253 case 0x9602: 1254 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE, 1255 "0912 cmpl_reg_vpi, mb status = 0x%x\n", 1256 mb->mbxStatus); 1257 lpfc_vport_set_state(vport, FC_VPORT_FAILED); 1258 spin_lock_irq(shost->host_lock); 1259 vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP); 1260 spin_unlock_irq(shost->host_lock); 1261 vport->fc_myDID = 0; 1262 goto out; 1263 } 1264 1265 vport->num_disc_nodes = 0; 1266 /* go thru NPR list and issue ELS PLOGIs */ 1267 if (vport->fc_npr_cnt) 1268 lpfc_els_disc_plogi(vport); 1269 1270 if (!vport->num_disc_nodes) { 1271 spin_lock_irq(shost->host_lock); 1272 vport->fc_flag &= ~FC_NDISC_ACTIVE; 1273 spin_unlock_irq(shost->host_lock); 1274 lpfc_can_disctmo(vport); 1275 } 1276 vport->port_state = LPFC_VPORT_READY; 1277 1278 out: 1279 mempool_free(pmb, phba->mbox_mem_pool); 1280 return; 1281 } 1282 1283 /* 1284 * This routine handles processing a Fabric REG_LOGIN mailbox 1285 * command upon completion. It is setup in the LPFC_MBOXQ 1286 * as the completion routine when the command is 1287 * handed off to the SLI layer. 1288 */ 1289 void 1290 lpfc_mbx_cmpl_fabric_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 1291 { 1292 struct lpfc_vport *vport = pmb->vport; 1293 MAILBOX_t *mb = &pmb->mb; 1294 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1); 1295 struct lpfc_nodelist *ndlp; 1296 struct lpfc_vport **vports; 1297 int i; 1298 1299 ndlp = (struct lpfc_nodelist *) pmb->context2; 1300 pmb->context1 = NULL; 1301 pmb->context2 = NULL; 1302 if (mb->mbxStatus) { 1303 lpfc_mbuf_free(phba, mp->virt, mp->phys); 1304 kfree(mp); 1305 mempool_free(pmb, phba->mbox_mem_pool); 1306 1307 if (phba->fc_topology == TOPOLOGY_LOOP) { 1308 /* FLOGI failed, use loop map to make discovery list */ 1309 lpfc_disc_list_loopmap(vport); 1310 1311 /* Start discovery */ 1312 lpfc_disc_start(vport); 1313 /* Decrement the reference count to ndlp after the 1314 * reference to the ndlp are done. 1315 */ 1316 lpfc_nlp_put(ndlp); 1317 return; 1318 } 1319 1320 lpfc_vport_set_state(vport, FC_VPORT_FAILED); 1321 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX, 1322 "0258 Register Fabric login error: 0x%x\n", 1323 mb->mbxStatus); 1324 /* Decrement the reference count to ndlp after the reference 1325 * to the ndlp are done. 1326 */ 1327 lpfc_nlp_put(ndlp); 1328 return; 1329 } 1330 1331 ndlp->nlp_rpi = mb->un.varWords[0]; 1332 ndlp->nlp_type |= NLP_FABRIC; 1333 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE); 1334 1335 if (vport->port_state == LPFC_FABRIC_CFG_LINK) { 1336 vports = lpfc_create_vport_work_array(phba); 1337 if (vports != NULL) 1338 for(i = 0; 1339 i <= phba->max_vpi && vports[i] != NULL; 1340 i++) { 1341 if (vports[i]->port_type == LPFC_PHYSICAL_PORT) 1342 continue; 1343 if (phba->fc_topology == TOPOLOGY_LOOP) { 1344 lpfc_vport_set_state(vports[i], 1345 FC_VPORT_LINKDOWN); 1346 continue; 1347 } 1348 if (phba->link_flag & LS_NPIV_FAB_SUPPORTED) 1349 lpfc_initial_fdisc(vports[i]); 1350 else { 1351 lpfc_vport_set_state(vports[i], 1352 FC_VPORT_NO_FABRIC_SUPP); 1353 lpfc_printf_vlog(vport, KERN_ERR, 1354 LOG_ELS, 1355 "0259 No NPIV " 1356 "Fabric support\n"); 1357 } 1358 } 1359 lpfc_destroy_vport_work_array(phba, vports); 1360 lpfc_do_scr_ns_plogi(phba, vport); 1361 } 1362 1363 lpfc_mbuf_free(phba, mp->virt, mp->phys); 1364 kfree(mp); 1365 mempool_free(pmb, phba->mbox_mem_pool); 1366 1367 /* Drop the reference count from the mbox at the end after 1368 * all the current reference to the ndlp have been done. 1369 */ 1370 lpfc_nlp_put(ndlp); 1371 return; 1372 } 1373 1374 /* 1375 * This routine handles processing a NameServer REG_LOGIN mailbox 1376 * command upon completion. It is setup in the LPFC_MBOXQ 1377 * as the completion routine when the command is 1378 * handed off to the SLI layer. 1379 */ 1380 void 1381 lpfc_mbx_cmpl_ns_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 1382 { 1383 MAILBOX_t *mb = &pmb->mb; 1384 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1); 1385 struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) pmb->context2; 1386 struct lpfc_vport *vport = pmb->vport; 1387 1388 if (mb->mbxStatus) { 1389 out: 1390 /* decrement the node reference count held for this 1391 * callback function. 1392 */ 1393 lpfc_nlp_put(ndlp); 1394 lpfc_mbuf_free(phba, mp->virt, mp->phys); 1395 kfree(mp); 1396 mempool_free(pmb, phba->mbox_mem_pool); 1397 1398 /* If no other thread is using the ndlp, free it */ 1399 lpfc_nlp_not_used(ndlp); 1400 1401 if (phba->fc_topology == TOPOLOGY_LOOP) { 1402 /* 1403 * RegLogin failed, use loop map to make discovery 1404 * list 1405 */ 1406 lpfc_disc_list_loopmap(vport); 1407 1408 /* Start discovery */ 1409 lpfc_disc_start(vport); 1410 return; 1411 } 1412 lpfc_vport_set_state(vport, FC_VPORT_FAILED); 1413 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS, 1414 "0260 Register NameServer error: 0x%x\n", 1415 mb->mbxStatus); 1416 return; 1417 } 1418 1419 pmb->context1 = NULL; 1420 1421 ndlp->nlp_rpi = mb->un.varWords[0]; 1422 ndlp->nlp_type |= NLP_FABRIC; 1423 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE); 1424 1425 if (vport->port_state < LPFC_VPORT_READY) { 1426 /* Link up discovery requires Fabric registration. */ 1427 lpfc_ns_cmd(vport, SLI_CTNS_RFF_ID, 0, 0); /* Do this first! */ 1428 lpfc_ns_cmd(vport, SLI_CTNS_RNN_ID, 0, 0); 1429 lpfc_ns_cmd(vport, SLI_CTNS_RSNN_NN, 0, 0); 1430 lpfc_ns_cmd(vport, SLI_CTNS_RSPN_ID, 0, 0); 1431 lpfc_ns_cmd(vport, SLI_CTNS_RFT_ID, 0, 0); 1432 1433 /* Issue SCR just before NameServer GID_FT Query */ 1434 lpfc_issue_els_scr(vport, SCR_DID, 0); 1435 } 1436 1437 vport->fc_ns_retry = 0; 1438 /* Good status, issue CT Request to NameServer */ 1439 if (lpfc_ns_cmd(vport, SLI_CTNS_GID_FT, 0, 0)) { 1440 /* Cannot issue NameServer Query, so finish up discovery */ 1441 goto out; 1442 } 1443 1444 /* decrement the node reference count held for this 1445 * callback function. 1446 */ 1447 lpfc_nlp_put(ndlp); 1448 lpfc_mbuf_free(phba, mp->virt, mp->phys); 1449 kfree(mp); 1450 mempool_free(pmb, phba->mbox_mem_pool); 1451 1452 return; 1453 } 1454 1455 static void 1456 lpfc_register_remote_port(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) 1457 { 1458 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 1459 struct fc_rport *rport; 1460 struct lpfc_rport_data *rdata; 1461 struct fc_rport_identifiers rport_ids; 1462 struct lpfc_hba *phba = vport->phba; 1463 1464 /* Remote port has reappeared. Re-register w/ FC transport */ 1465 rport_ids.node_name = wwn_to_u64(ndlp->nlp_nodename.u.wwn); 1466 rport_ids.port_name = wwn_to_u64(ndlp->nlp_portname.u.wwn); 1467 rport_ids.port_id = ndlp->nlp_DID; 1468 rport_ids.roles = FC_RPORT_ROLE_UNKNOWN; 1469 1470 /* 1471 * We leave our node pointer in rport->dd_data when we unregister a 1472 * FCP target port. But fc_remote_port_add zeros the space to which 1473 * rport->dd_data points. So, if we're reusing a previously 1474 * registered port, drop the reference that we took the last time we 1475 * registered the port. 1476 */ 1477 if (ndlp->rport && ndlp->rport->dd_data && 1478 ((struct lpfc_rport_data *) ndlp->rport->dd_data)->pnode == ndlp) 1479 lpfc_nlp_put(ndlp); 1480 1481 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT, 1482 "rport add: did:x%x flg:x%x type x%x", 1483 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type); 1484 1485 ndlp->rport = rport = fc_remote_port_add(shost, 0, &rport_ids); 1486 if (!rport || !get_device(&rport->dev)) { 1487 dev_printk(KERN_WARNING, &phba->pcidev->dev, 1488 "Warning: fc_remote_port_add failed\n"); 1489 return; 1490 } 1491 1492 /* initialize static port data */ 1493 rport->maxframe_size = ndlp->nlp_maxframe; 1494 rport->supported_classes = ndlp->nlp_class_sup; 1495 rdata = rport->dd_data; 1496 rdata->pnode = lpfc_nlp_get(ndlp); 1497 1498 if (ndlp->nlp_type & NLP_FCP_TARGET) 1499 rport_ids.roles |= FC_RPORT_ROLE_FCP_TARGET; 1500 if (ndlp->nlp_type & NLP_FCP_INITIATOR) 1501 rport_ids.roles |= FC_RPORT_ROLE_FCP_INITIATOR; 1502 1503 1504 if (rport_ids.roles != FC_RPORT_ROLE_UNKNOWN) 1505 fc_remote_port_rolechg(rport, rport_ids.roles); 1506 1507 if ((rport->scsi_target_id != -1) && 1508 (rport->scsi_target_id < LPFC_MAX_TARGET)) { 1509 ndlp->nlp_sid = rport->scsi_target_id; 1510 } 1511 return; 1512 } 1513 1514 static void 1515 lpfc_unregister_remote_port(struct lpfc_nodelist *ndlp) 1516 { 1517 struct fc_rport *rport = ndlp->rport; 1518 1519 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_RPORT, 1520 "rport delete: did:x%x flg:x%x type x%x", 1521 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type); 1522 1523 fc_remote_port_delete(rport); 1524 1525 return; 1526 } 1527 1528 static void 1529 lpfc_nlp_counters(struct lpfc_vport *vport, int state, int count) 1530 { 1531 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 1532 1533 spin_lock_irq(shost->host_lock); 1534 switch (state) { 1535 case NLP_STE_UNUSED_NODE: 1536 vport->fc_unused_cnt += count; 1537 break; 1538 case NLP_STE_PLOGI_ISSUE: 1539 vport->fc_plogi_cnt += count; 1540 break; 1541 case NLP_STE_ADISC_ISSUE: 1542 vport->fc_adisc_cnt += count; 1543 break; 1544 case NLP_STE_REG_LOGIN_ISSUE: 1545 vport->fc_reglogin_cnt += count; 1546 break; 1547 case NLP_STE_PRLI_ISSUE: 1548 vport->fc_prli_cnt += count; 1549 break; 1550 case NLP_STE_UNMAPPED_NODE: 1551 vport->fc_unmap_cnt += count; 1552 break; 1553 case NLP_STE_MAPPED_NODE: 1554 vport->fc_map_cnt += count; 1555 break; 1556 case NLP_STE_NPR_NODE: 1557 vport->fc_npr_cnt += count; 1558 break; 1559 } 1560 spin_unlock_irq(shost->host_lock); 1561 } 1562 1563 static void 1564 lpfc_nlp_state_cleanup(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 1565 int old_state, int new_state) 1566 { 1567 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 1568 1569 if (new_state == NLP_STE_UNMAPPED_NODE) { 1570 ndlp->nlp_type &= ~(NLP_FCP_TARGET | NLP_FCP_INITIATOR); 1571 ndlp->nlp_flag &= ~NLP_NODEV_REMOVE; 1572 ndlp->nlp_type |= NLP_FC_NODE; 1573 } 1574 if (new_state == NLP_STE_MAPPED_NODE) 1575 ndlp->nlp_flag &= ~NLP_NODEV_REMOVE; 1576 if (new_state == NLP_STE_NPR_NODE) 1577 ndlp->nlp_flag &= ~NLP_RCV_PLOGI; 1578 1579 /* Transport interface */ 1580 if (ndlp->rport && (old_state == NLP_STE_MAPPED_NODE || 1581 old_state == NLP_STE_UNMAPPED_NODE)) { 1582 vport->phba->nport_event_cnt++; 1583 lpfc_unregister_remote_port(ndlp); 1584 } 1585 1586 if (new_state == NLP_STE_MAPPED_NODE || 1587 new_state == NLP_STE_UNMAPPED_NODE) { 1588 vport->phba->nport_event_cnt++; 1589 /* 1590 * Tell the fc transport about the port, if we haven't 1591 * already. If we have, and it's a scsi entity, be 1592 * sure to unblock any attached scsi devices 1593 */ 1594 lpfc_register_remote_port(vport, ndlp); 1595 } 1596 /* 1597 * if we added to Mapped list, but the remote port 1598 * registration failed or assigned a target id outside 1599 * our presentable range - move the node to the 1600 * Unmapped List 1601 */ 1602 if (new_state == NLP_STE_MAPPED_NODE && 1603 (!ndlp->rport || 1604 ndlp->rport->scsi_target_id == -1 || 1605 ndlp->rport->scsi_target_id >= LPFC_MAX_TARGET)) { 1606 spin_lock_irq(shost->host_lock); 1607 ndlp->nlp_flag |= NLP_TGT_NO_SCSIID; 1608 spin_unlock_irq(shost->host_lock); 1609 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE); 1610 } 1611 } 1612 1613 static char * 1614 lpfc_nlp_state_name(char *buffer, size_t size, int state) 1615 { 1616 static char *states[] = { 1617 [NLP_STE_UNUSED_NODE] = "UNUSED", 1618 [NLP_STE_PLOGI_ISSUE] = "PLOGI", 1619 [NLP_STE_ADISC_ISSUE] = "ADISC", 1620 [NLP_STE_REG_LOGIN_ISSUE] = "REGLOGIN", 1621 [NLP_STE_PRLI_ISSUE] = "PRLI", 1622 [NLP_STE_UNMAPPED_NODE] = "UNMAPPED", 1623 [NLP_STE_MAPPED_NODE] = "MAPPED", 1624 [NLP_STE_NPR_NODE] = "NPR", 1625 }; 1626 1627 if (state < NLP_STE_MAX_STATE && states[state]) 1628 strlcpy(buffer, states[state], size); 1629 else 1630 snprintf(buffer, size, "unknown (%d)", state); 1631 return buffer; 1632 } 1633 1634 void 1635 lpfc_nlp_set_state(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 1636 int state) 1637 { 1638 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 1639 int old_state = ndlp->nlp_state; 1640 char name1[16], name2[16]; 1641 1642 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE, 1643 "0904 NPort state transition x%06x, %s -> %s\n", 1644 ndlp->nlp_DID, 1645 lpfc_nlp_state_name(name1, sizeof(name1), old_state), 1646 lpfc_nlp_state_name(name2, sizeof(name2), state)); 1647 1648 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE, 1649 "node statechg did:x%x old:%d ste:%d", 1650 ndlp->nlp_DID, old_state, state); 1651 1652 if (old_state == NLP_STE_NPR_NODE && 1653 (ndlp->nlp_flag & NLP_DELAY_TMO) != 0 && 1654 state != NLP_STE_NPR_NODE) 1655 lpfc_cancel_retry_delay_tmo(vport, ndlp); 1656 if (old_state == NLP_STE_UNMAPPED_NODE) { 1657 ndlp->nlp_flag &= ~NLP_TGT_NO_SCSIID; 1658 ndlp->nlp_type &= ~NLP_FC_NODE; 1659 } 1660 1661 if (list_empty(&ndlp->nlp_listp)) { 1662 spin_lock_irq(shost->host_lock); 1663 list_add_tail(&ndlp->nlp_listp, &vport->fc_nodes); 1664 spin_unlock_irq(shost->host_lock); 1665 } else if (old_state) 1666 lpfc_nlp_counters(vport, old_state, -1); 1667 1668 ndlp->nlp_state = state; 1669 lpfc_nlp_counters(vport, state, 1); 1670 lpfc_nlp_state_cleanup(vport, ndlp, old_state, state); 1671 } 1672 1673 void 1674 lpfc_enqueue_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) 1675 { 1676 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 1677 1678 if (list_empty(&ndlp->nlp_listp)) { 1679 spin_lock_irq(shost->host_lock); 1680 list_add_tail(&ndlp->nlp_listp, &vport->fc_nodes); 1681 spin_unlock_irq(shost->host_lock); 1682 } 1683 } 1684 1685 void 1686 lpfc_dequeue_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) 1687 { 1688 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 1689 1690 if ((ndlp->nlp_flag & NLP_DELAY_TMO) != 0) 1691 lpfc_cancel_retry_delay_tmo(vport, ndlp); 1692 if (ndlp->nlp_state && !list_empty(&ndlp->nlp_listp)) 1693 lpfc_nlp_counters(vport, ndlp->nlp_state, -1); 1694 spin_lock_irq(shost->host_lock); 1695 list_del_init(&ndlp->nlp_listp); 1696 spin_unlock_irq(shost->host_lock); 1697 lpfc_nlp_state_cleanup(vport, ndlp, ndlp->nlp_state, 1698 NLP_STE_UNUSED_NODE); 1699 } 1700 1701 static void 1702 lpfc_disable_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) 1703 { 1704 if ((ndlp->nlp_flag & NLP_DELAY_TMO) != 0) 1705 lpfc_cancel_retry_delay_tmo(vport, ndlp); 1706 if (ndlp->nlp_state && !list_empty(&ndlp->nlp_listp)) 1707 lpfc_nlp_counters(vport, ndlp->nlp_state, -1); 1708 lpfc_nlp_state_cleanup(vport, ndlp, ndlp->nlp_state, 1709 NLP_STE_UNUSED_NODE); 1710 } 1711 1712 struct lpfc_nodelist * 1713 lpfc_enable_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 1714 int state) 1715 { 1716 struct lpfc_hba *phba = vport->phba; 1717 uint32_t did; 1718 unsigned long flags; 1719 1720 if (!ndlp) 1721 return NULL; 1722 1723 spin_lock_irqsave(&phba->ndlp_lock, flags); 1724 /* The ndlp should not be in memory free mode */ 1725 if (NLP_CHK_FREE_REQ(ndlp)) { 1726 spin_unlock_irqrestore(&phba->ndlp_lock, flags); 1727 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NODE, 1728 "0277 lpfc_enable_node: ndlp:x%p " 1729 "usgmap:x%x refcnt:%d\n", 1730 (void *)ndlp, ndlp->nlp_usg_map, 1731 atomic_read(&ndlp->kref.refcount)); 1732 return NULL; 1733 } 1734 /* The ndlp should not already be in active mode */ 1735 if (NLP_CHK_NODE_ACT(ndlp)) { 1736 spin_unlock_irqrestore(&phba->ndlp_lock, flags); 1737 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NODE, 1738 "0278 lpfc_enable_node: ndlp:x%p " 1739 "usgmap:x%x refcnt:%d\n", 1740 (void *)ndlp, ndlp->nlp_usg_map, 1741 atomic_read(&ndlp->kref.refcount)); 1742 return NULL; 1743 } 1744 1745 /* Keep the original DID */ 1746 did = ndlp->nlp_DID; 1747 1748 /* re-initialize ndlp except of ndlp linked list pointer */ 1749 memset((((char *)ndlp) + sizeof (struct list_head)), 0, 1750 sizeof (struct lpfc_nodelist) - sizeof (struct list_head)); 1751 INIT_LIST_HEAD(&ndlp->els_retry_evt.evt_listp); 1752 INIT_LIST_HEAD(&ndlp->dev_loss_evt.evt_listp); 1753 init_timer(&ndlp->nlp_delayfunc); 1754 ndlp->nlp_delayfunc.function = lpfc_els_retry_delay; 1755 ndlp->nlp_delayfunc.data = (unsigned long)ndlp; 1756 ndlp->nlp_DID = did; 1757 ndlp->vport = vport; 1758 ndlp->nlp_sid = NLP_NO_SID; 1759 /* ndlp management re-initialize */ 1760 kref_init(&ndlp->kref); 1761 NLP_INT_NODE_ACT(ndlp); 1762 1763 spin_unlock_irqrestore(&phba->ndlp_lock, flags); 1764 1765 if (state != NLP_STE_UNUSED_NODE) 1766 lpfc_nlp_set_state(vport, ndlp, state); 1767 1768 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE, 1769 "node enable: did:x%x", 1770 ndlp->nlp_DID, 0, 0); 1771 return ndlp; 1772 } 1773 1774 void 1775 lpfc_drop_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) 1776 { 1777 /* 1778 * Use of lpfc_drop_node and UNUSED list: lpfc_drop_node should 1779 * be used if we wish to issue the "last" lpfc_nlp_put() to remove 1780 * the ndlp from the vport. The ndlp marked as UNUSED on the list 1781 * until ALL other outstanding threads have completed. We check 1782 * that the ndlp not already in the UNUSED state before we proceed. 1783 */ 1784 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE) 1785 return; 1786 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNUSED_NODE); 1787 lpfc_nlp_put(ndlp); 1788 return; 1789 } 1790 1791 /* 1792 * Start / ReStart rescue timer for Discovery / RSCN handling 1793 */ 1794 void 1795 lpfc_set_disctmo(struct lpfc_vport *vport) 1796 { 1797 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 1798 struct lpfc_hba *phba = vport->phba; 1799 uint32_t tmo; 1800 1801 if (vport->port_state == LPFC_LOCAL_CFG_LINK) { 1802 /* For FAN, timeout should be greater then edtov */ 1803 tmo = (((phba->fc_edtov + 999) / 1000) + 1); 1804 } else { 1805 /* Normal discovery timeout should be > then ELS/CT timeout 1806 * FC spec states we need 3 * ratov for CT requests 1807 */ 1808 tmo = ((phba->fc_ratov * 3) + 3); 1809 } 1810 1811 1812 if (!timer_pending(&vport->fc_disctmo)) { 1813 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, 1814 "set disc timer: tmo:x%x state:x%x flg:x%x", 1815 tmo, vport->port_state, vport->fc_flag); 1816 } 1817 1818 mod_timer(&vport->fc_disctmo, jiffies + HZ * tmo); 1819 spin_lock_irq(shost->host_lock); 1820 vport->fc_flag |= FC_DISC_TMO; 1821 spin_unlock_irq(shost->host_lock); 1822 1823 /* Start Discovery Timer state <hba_state> */ 1824 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, 1825 "0247 Start Discovery Timer state x%x " 1826 "Data: x%x x%lx x%x x%x\n", 1827 vport->port_state, tmo, 1828 (unsigned long)&vport->fc_disctmo, vport->fc_plogi_cnt, 1829 vport->fc_adisc_cnt); 1830 1831 return; 1832 } 1833 1834 /* 1835 * Cancel rescue timer for Discovery / RSCN handling 1836 */ 1837 int 1838 lpfc_can_disctmo(struct lpfc_vport *vport) 1839 { 1840 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 1841 unsigned long iflags; 1842 1843 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, 1844 "can disc timer: state:x%x rtry:x%x flg:x%x", 1845 vport->port_state, vport->fc_ns_retry, vport->fc_flag); 1846 1847 /* Turn off discovery timer if its running */ 1848 if (vport->fc_flag & FC_DISC_TMO) { 1849 spin_lock_irqsave(shost->host_lock, iflags); 1850 vport->fc_flag &= ~FC_DISC_TMO; 1851 spin_unlock_irqrestore(shost->host_lock, iflags); 1852 del_timer_sync(&vport->fc_disctmo); 1853 spin_lock_irqsave(&vport->work_port_lock, iflags); 1854 vport->work_port_events &= ~WORKER_DISC_TMO; 1855 spin_unlock_irqrestore(&vport->work_port_lock, iflags); 1856 } 1857 1858 /* Cancel Discovery Timer state <hba_state> */ 1859 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, 1860 "0248 Cancel Discovery Timer state x%x " 1861 "Data: x%x x%x x%x\n", 1862 vport->port_state, vport->fc_flag, 1863 vport->fc_plogi_cnt, vport->fc_adisc_cnt); 1864 return 0; 1865 } 1866 1867 /* 1868 * Check specified ring for outstanding IOCB on the SLI queue 1869 * Return true if iocb matches the specified nport 1870 */ 1871 int 1872 lpfc_check_sli_ndlp(struct lpfc_hba *phba, 1873 struct lpfc_sli_ring *pring, 1874 struct lpfc_iocbq *iocb, 1875 struct lpfc_nodelist *ndlp) 1876 { 1877 struct lpfc_sli *psli = &phba->sli; 1878 IOCB_t *icmd = &iocb->iocb; 1879 struct lpfc_vport *vport = ndlp->vport; 1880 1881 if (iocb->vport != vport) 1882 return 0; 1883 1884 if (pring->ringno == LPFC_ELS_RING) { 1885 switch (icmd->ulpCommand) { 1886 case CMD_GEN_REQUEST64_CR: 1887 if (icmd->ulpContext == (volatile ushort)ndlp->nlp_rpi) 1888 return 1; 1889 case CMD_ELS_REQUEST64_CR: 1890 if (icmd->un.elsreq64.remoteID == ndlp->nlp_DID) 1891 return 1; 1892 case CMD_XMIT_ELS_RSP64_CX: 1893 if (iocb->context1 == (uint8_t *) ndlp) 1894 return 1; 1895 } 1896 } else if (pring->ringno == psli->extra_ring) { 1897 1898 } else if (pring->ringno == psli->fcp_ring) { 1899 /* Skip match check if waiting to relogin to FCP target */ 1900 if ((ndlp->nlp_type & NLP_FCP_TARGET) && 1901 (ndlp->nlp_flag & NLP_DELAY_TMO)) { 1902 return 0; 1903 } 1904 if (icmd->ulpContext == (volatile ushort)ndlp->nlp_rpi) { 1905 return 1; 1906 } 1907 } else if (pring->ringno == psli->next_ring) { 1908 1909 } 1910 return 0; 1911 } 1912 1913 /* 1914 * Free resources / clean up outstanding I/Os 1915 * associated with nlp_rpi in the LPFC_NODELIST entry. 1916 */ 1917 static int 1918 lpfc_no_rpi(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp) 1919 { 1920 LIST_HEAD(completions); 1921 struct lpfc_sli *psli; 1922 struct lpfc_sli_ring *pring; 1923 struct lpfc_iocbq *iocb, *next_iocb; 1924 IOCB_t *icmd; 1925 uint32_t rpi, i; 1926 1927 lpfc_fabric_abort_nport(ndlp); 1928 1929 /* 1930 * Everything that matches on txcmplq will be returned 1931 * by firmware with a no rpi error. 1932 */ 1933 psli = &phba->sli; 1934 rpi = ndlp->nlp_rpi; 1935 if (rpi) { 1936 /* Now process each ring */ 1937 for (i = 0; i < psli->num_rings; i++) { 1938 pring = &psli->ring[i]; 1939 1940 spin_lock_irq(&phba->hbalock); 1941 list_for_each_entry_safe(iocb, next_iocb, &pring->txq, 1942 list) { 1943 /* 1944 * Check to see if iocb matches the nport we are 1945 * looking for 1946 */ 1947 if ((lpfc_check_sli_ndlp(phba, pring, iocb, 1948 ndlp))) { 1949 /* It matches, so deque and call compl 1950 with an error */ 1951 list_move_tail(&iocb->list, 1952 &completions); 1953 pring->txq_cnt--; 1954 } 1955 } 1956 spin_unlock_irq(&phba->hbalock); 1957 } 1958 } 1959 1960 while (!list_empty(&completions)) { 1961 iocb = list_get_first(&completions, struct lpfc_iocbq, list); 1962 list_del_init(&iocb->list); 1963 1964 if (!iocb->iocb_cmpl) 1965 lpfc_sli_release_iocbq(phba, iocb); 1966 else { 1967 icmd = &iocb->iocb; 1968 icmd->ulpStatus = IOSTAT_LOCAL_REJECT; 1969 icmd->un.ulpWord[4] = IOERR_SLI_ABORTED; 1970 (iocb->iocb_cmpl)(phba, iocb, iocb); 1971 } 1972 } 1973 1974 return 0; 1975 } 1976 1977 /* 1978 * Free rpi associated with LPFC_NODELIST entry. 1979 * This routine is called from lpfc_freenode(), when we are removing 1980 * a LPFC_NODELIST entry. It is also called if the driver initiates a 1981 * LOGO that completes successfully, and we are waiting to PLOGI back 1982 * to the remote NPort. In addition, it is called after we receive 1983 * and unsolicated ELS cmd, send back a rsp, the rsp completes and 1984 * we are waiting to PLOGI back to the remote NPort. 1985 */ 1986 int 1987 lpfc_unreg_rpi(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) 1988 { 1989 struct lpfc_hba *phba = vport->phba; 1990 LPFC_MBOXQ_t *mbox; 1991 int rc; 1992 1993 if (ndlp->nlp_rpi) { 1994 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 1995 if (mbox) { 1996 lpfc_unreg_login(phba, vport->vpi, ndlp->nlp_rpi, mbox); 1997 mbox->vport = vport; 1998 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl; 1999 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT); 2000 if (rc == MBX_NOT_FINISHED) 2001 mempool_free(mbox, phba->mbox_mem_pool); 2002 } 2003 lpfc_no_rpi(phba, ndlp); 2004 ndlp->nlp_rpi = 0; 2005 return 1; 2006 } 2007 return 0; 2008 } 2009 2010 void 2011 lpfc_unreg_all_rpis(struct lpfc_vport *vport) 2012 { 2013 struct lpfc_hba *phba = vport->phba; 2014 LPFC_MBOXQ_t *mbox; 2015 int rc; 2016 2017 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 2018 if (mbox) { 2019 lpfc_unreg_login(phba, vport->vpi, 0xffff, mbox); 2020 mbox->vport = vport; 2021 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl; 2022 mbox->context1 = NULL; 2023 rc = lpfc_sli_issue_mbox_wait(phba, mbox, LPFC_MBOX_TMO); 2024 if (rc == MBX_NOT_FINISHED) { 2025 mempool_free(mbox, phba->mbox_mem_pool); 2026 } 2027 } 2028 } 2029 2030 void 2031 lpfc_unreg_default_rpis(struct lpfc_vport *vport) 2032 { 2033 struct lpfc_hba *phba = vport->phba; 2034 LPFC_MBOXQ_t *mbox; 2035 int rc; 2036 2037 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 2038 if (mbox) { 2039 lpfc_unreg_did(phba, vport->vpi, 0xffffffff, mbox); 2040 mbox->vport = vport; 2041 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl; 2042 mbox->context1 = NULL; 2043 rc = lpfc_sli_issue_mbox_wait(phba, mbox, LPFC_MBOX_TMO); 2044 if (rc == MBX_NOT_FINISHED) { 2045 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX | LOG_VPORT, 2046 "1815 Could not issue " 2047 "unreg_did (default rpis)\n"); 2048 mempool_free(mbox, phba->mbox_mem_pool); 2049 } 2050 } 2051 } 2052 2053 /* 2054 * Free resources associated with LPFC_NODELIST entry 2055 * so it can be freed. 2056 */ 2057 static int 2058 lpfc_cleanup_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) 2059 { 2060 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 2061 struct lpfc_hba *phba = vport->phba; 2062 LPFC_MBOXQ_t *mb, *nextmb; 2063 struct lpfc_dmabuf *mp; 2064 2065 /* Cleanup node for NPort <nlp_DID> */ 2066 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE, 2067 "0900 Cleanup node for NPort x%x " 2068 "Data: x%x x%x x%x\n", 2069 ndlp->nlp_DID, ndlp->nlp_flag, 2070 ndlp->nlp_state, ndlp->nlp_rpi); 2071 if (NLP_CHK_FREE_REQ(ndlp)) { 2072 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NODE, 2073 "0280 lpfc_cleanup_node: ndlp:x%p " 2074 "usgmap:x%x refcnt:%d\n", 2075 (void *)ndlp, ndlp->nlp_usg_map, 2076 atomic_read(&ndlp->kref.refcount)); 2077 lpfc_dequeue_node(vport, ndlp); 2078 } else { 2079 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NODE, 2080 "0281 lpfc_cleanup_node: ndlp:x%p " 2081 "usgmap:x%x refcnt:%d\n", 2082 (void *)ndlp, ndlp->nlp_usg_map, 2083 atomic_read(&ndlp->kref.refcount)); 2084 lpfc_disable_node(vport, ndlp); 2085 } 2086 2087 /* cleanup any ndlp on mbox q waiting for reglogin cmpl */ 2088 if ((mb = phba->sli.mbox_active)) { 2089 if ((mb->mb.mbxCommand == MBX_REG_LOGIN64) && 2090 (ndlp == (struct lpfc_nodelist *) mb->context2)) { 2091 mb->context2 = NULL; 2092 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl; 2093 } 2094 } 2095 2096 spin_lock_irq(&phba->hbalock); 2097 list_for_each_entry_safe(mb, nextmb, &phba->sli.mboxq, list) { 2098 if ((mb->mb.mbxCommand == MBX_REG_LOGIN64) && 2099 (ndlp == (struct lpfc_nodelist *) mb->context2)) { 2100 mp = (struct lpfc_dmabuf *) (mb->context1); 2101 if (mp) { 2102 __lpfc_mbuf_free(phba, mp->virt, mp->phys); 2103 kfree(mp); 2104 } 2105 list_del(&mb->list); 2106 mempool_free(mb, phba->mbox_mem_pool); 2107 /* We shall not invoke the lpfc_nlp_put to decrement 2108 * the ndlp reference count as we are in the process 2109 * of lpfc_nlp_release. 2110 */ 2111 } 2112 } 2113 spin_unlock_irq(&phba->hbalock); 2114 2115 lpfc_els_abort(phba, ndlp); 2116 2117 spin_lock_irq(shost->host_lock); 2118 ndlp->nlp_flag &= ~NLP_DELAY_TMO; 2119 spin_unlock_irq(shost->host_lock); 2120 2121 ndlp->nlp_last_elscmd = 0; 2122 del_timer_sync(&ndlp->nlp_delayfunc); 2123 2124 if (!list_empty(&ndlp->els_retry_evt.evt_listp)) 2125 list_del_init(&ndlp->els_retry_evt.evt_listp); 2126 if (!list_empty(&ndlp->dev_loss_evt.evt_listp)) 2127 list_del_init(&ndlp->dev_loss_evt.evt_listp); 2128 2129 lpfc_unreg_rpi(vport, ndlp); 2130 2131 return 0; 2132 } 2133 2134 /* 2135 * Check to see if we can free the nlp back to the freelist. 2136 * If we are in the middle of using the nlp in the discovery state 2137 * machine, defer the free till we reach the end of the state machine. 2138 */ 2139 static void 2140 lpfc_nlp_remove(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) 2141 { 2142 struct lpfc_hba *phba = vport->phba; 2143 struct lpfc_rport_data *rdata; 2144 LPFC_MBOXQ_t *mbox; 2145 int rc; 2146 2147 if (ndlp->nlp_flag & NLP_DELAY_TMO) { 2148 lpfc_cancel_retry_delay_tmo(vport, ndlp); 2149 } 2150 2151 if (ndlp->nlp_flag & NLP_DEFER_RM && !ndlp->nlp_rpi) { 2152 /* For this case we need to cleanup the default rpi 2153 * allocated by the firmware. 2154 */ 2155 if ((mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL)) 2156 != NULL) { 2157 rc = lpfc_reg_login(phba, vport->vpi, ndlp->nlp_DID, 2158 (uint8_t *) &vport->fc_sparam, mbox, 0); 2159 if (rc) { 2160 mempool_free(mbox, phba->mbox_mem_pool); 2161 } 2162 else { 2163 mbox->mbox_flag |= LPFC_MBX_IMED_UNREG; 2164 mbox->mbox_cmpl = lpfc_mbx_cmpl_dflt_rpi; 2165 mbox->vport = vport; 2166 mbox->context2 = NULL; 2167 rc =lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT); 2168 if (rc == MBX_NOT_FINISHED) { 2169 mempool_free(mbox, phba->mbox_mem_pool); 2170 } 2171 } 2172 } 2173 } 2174 lpfc_cleanup_node(vport, ndlp); 2175 2176 /* 2177 * We can get here with a non-NULL ndlp->rport because when we 2178 * unregister a rport we don't break the rport/node linkage. So if we 2179 * do, make sure we don't leaving any dangling pointers behind. 2180 */ 2181 if (ndlp->rport) { 2182 rdata = ndlp->rport->dd_data; 2183 rdata->pnode = NULL; 2184 ndlp->rport = NULL; 2185 } 2186 } 2187 2188 static int 2189 lpfc_matchdid(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 2190 uint32_t did) 2191 { 2192 D_ID mydid, ndlpdid, matchdid; 2193 2194 if (did == Bcast_DID) 2195 return 0; 2196 2197 /* First check for Direct match */ 2198 if (ndlp->nlp_DID == did) 2199 return 1; 2200 2201 /* Next check for area/domain identically equals 0 match */ 2202 mydid.un.word = vport->fc_myDID; 2203 if ((mydid.un.b.domain == 0) && (mydid.un.b.area == 0)) { 2204 return 0; 2205 } 2206 2207 matchdid.un.word = did; 2208 ndlpdid.un.word = ndlp->nlp_DID; 2209 if (matchdid.un.b.id == ndlpdid.un.b.id) { 2210 if ((mydid.un.b.domain == matchdid.un.b.domain) && 2211 (mydid.un.b.area == matchdid.un.b.area)) { 2212 if ((ndlpdid.un.b.domain == 0) && 2213 (ndlpdid.un.b.area == 0)) { 2214 if (ndlpdid.un.b.id) 2215 return 1; 2216 } 2217 return 0; 2218 } 2219 2220 matchdid.un.word = ndlp->nlp_DID; 2221 if ((mydid.un.b.domain == ndlpdid.un.b.domain) && 2222 (mydid.un.b.area == ndlpdid.un.b.area)) { 2223 if ((matchdid.un.b.domain == 0) && 2224 (matchdid.un.b.area == 0)) { 2225 if (matchdid.un.b.id) 2226 return 1; 2227 } 2228 } 2229 } 2230 return 0; 2231 } 2232 2233 /* Search for a nodelist entry */ 2234 static struct lpfc_nodelist * 2235 __lpfc_findnode_did(struct lpfc_vport *vport, uint32_t did) 2236 { 2237 struct lpfc_nodelist *ndlp; 2238 uint32_t data1; 2239 2240 list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) { 2241 if (lpfc_matchdid(vport, ndlp, did)) { 2242 data1 = (((uint32_t) ndlp->nlp_state << 24) | 2243 ((uint32_t) ndlp->nlp_xri << 16) | 2244 ((uint32_t) ndlp->nlp_type << 8) | 2245 ((uint32_t) ndlp->nlp_rpi & 0xff)); 2246 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE, 2247 "0929 FIND node DID " 2248 "Data: x%p x%x x%x x%x\n", 2249 ndlp, ndlp->nlp_DID, 2250 ndlp->nlp_flag, data1); 2251 return ndlp; 2252 } 2253 } 2254 2255 /* FIND node did <did> NOT FOUND */ 2256 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE, 2257 "0932 FIND node did x%x NOT FOUND.\n", did); 2258 return NULL; 2259 } 2260 2261 struct lpfc_nodelist * 2262 lpfc_findnode_did(struct lpfc_vport *vport, uint32_t did) 2263 { 2264 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 2265 struct lpfc_nodelist *ndlp; 2266 2267 spin_lock_irq(shost->host_lock); 2268 ndlp = __lpfc_findnode_did(vport, did); 2269 spin_unlock_irq(shost->host_lock); 2270 return ndlp; 2271 } 2272 2273 struct lpfc_nodelist * 2274 lpfc_setup_disc_node(struct lpfc_vport *vport, uint32_t did) 2275 { 2276 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 2277 struct lpfc_nodelist *ndlp; 2278 2279 ndlp = lpfc_findnode_did(vport, did); 2280 if (!ndlp) { 2281 if ((vport->fc_flag & FC_RSCN_MODE) != 0 && 2282 lpfc_rscn_payload_check(vport, did) == 0) 2283 return NULL; 2284 ndlp = (struct lpfc_nodelist *) 2285 mempool_alloc(vport->phba->nlp_mem_pool, GFP_KERNEL); 2286 if (!ndlp) 2287 return NULL; 2288 lpfc_nlp_init(vport, ndlp, did); 2289 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE); 2290 spin_lock_irq(shost->host_lock); 2291 ndlp->nlp_flag |= NLP_NPR_2B_DISC; 2292 spin_unlock_irq(shost->host_lock); 2293 return ndlp; 2294 } else if (!NLP_CHK_NODE_ACT(ndlp)) { 2295 ndlp = lpfc_enable_node(vport, ndlp, NLP_STE_NPR_NODE); 2296 if (!ndlp) 2297 return NULL; 2298 spin_lock_irq(shost->host_lock); 2299 ndlp->nlp_flag |= NLP_NPR_2B_DISC; 2300 spin_unlock_irq(shost->host_lock); 2301 return ndlp; 2302 } 2303 2304 if ((vport->fc_flag & FC_RSCN_MODE) && 2305 !(vport->fc_flag & FC_NDISC_ACTIVE)) { 2306 if (lpfc_rscn_payload_check(vport, did)) { 2307 /* If we've already recieved a PLOGI from this NPort 2308 * we don't need to try to discover it again. 2309 */ 2310 if (ndlp->nlp_flag & NLP_RCV_PLOGI) 2311 return NULL; 2312 2313 spin_lock_irq(shost->host_lock); 2314 ndlp->nlp_flag |= NLP_NPR_2B_DISC; 2315 spin_unlock_irq(shost->host_lock); 2316 2317 /* Since this node is marked for discovery, 2318 * delay timeout is not needed. 2319 */ 2320 if (ndlp->nlp_flag & NLP_DELAY_TMO) 2321 lpfc_cancel_retry_delay_tmo(vport, ndlp); 2322 } else 2323 ndlp = NULL; 2324 } else { 2325 /* If we've already recieved a PLOGI from this NPort, 2326 * or we are already in the process of discovery on it, 2327 * we don't need to try to discover it again. 2328 */ 2329 if (ndlp->nlp_state == NLP_STE_ADISC_ISSUE || 2330 ndlp->nlp_state == NLP_STE_PLOGI_ISSUE || 2331 ndlp->nlp_flag & NLP_RCV_PLOGI) 2332 return NULL; 2333 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE); 2334 spin_lock_irq(shost->host_lock); 2335 ndlp->nlp_flag |= NLP_NPR_2B_DISC; 2336 spin_unlock_irq(shost->host_lock); 2337 } 2338 return ndlp; 2339 } 2340 2341 /* Build a list of nodes to discover based on the loopmap */ 2342 void 2343 lpfc_disc_list_loopmap(struct lpfc_vport *vport) 2344 { 2345 struct lpfc_hba *phba = vport->phba; 2346 int j; 2347 uint32_t alpa, index; 2348 2349 if (!lpfc_is_link_up(phba)) 2350 return; 2351 2352 if (phba->fc_topology != TOPOLOGY_LOOP) 2353 return; 2354 2355 /* Check for loop map present or not */ 2356 if (phba->alpa_map[0]) { 2357 for (j = 1; j <= phba->alpa_map[0]; j++) { 2358 alpa = phba->alpa_map[j]; 2359 if (((vport->fc_myDID & 0xff) == alpa) || (alpa == 0)) 2360 continue; 2361 lpfc_setup_disc_node(vport, alpa); 2362 } 2363 } else { 2364 /* No alpamap, so try all alpa's */ 2365 for (j = 0; j < FC_MAXLOOP; j++) { 2366 /* If cfg_scan_down is set, start from highest 2367 * ALPA (0xef) to lowest (0x1). 2368 */ 2369 if (vport->cfg_scan_down) 2370 index = j; 2371 else 2372 index = FC_MAXLOOP - j - 1; 2373 alpa = lpfcAlpaArray[index]; 2374 if ((vport->fc_myDID & 0xff) == alpa) 2375 continue; 2376 lpfc_setup_disc_node(vport, alpa); 2377 } 2378 } 2379 return; 2380 } 2381 2382 void 2383 lpfc_issue_clear_la(struct lpfc_hba *phba, struct lpfc_vport *vport) 2384 { 2385 LPFC_MBOXQ_t *mbox; 2386 struct lpfc_sli *psli = &phba->sli; 2387 struct lpfc_sli_ring *extra_ring = &psli->ring[psli->extra_ring]; 2388 struct lpfc_sli_ring *fcp_ring = &psli->ring[psli->fcp_ring]; 2389 struct lpfc_sli_ring *next_ring = &psli->ring[psli->next_ring]; 2390 int rc; 2391 2392 /* 2393 * if it's not a physical port or if we already send 2394 * clear_la then don't send it. 2395 */ 2396 if ((phba->link_state >= LPFC_CLEAR_LA) || 2397 (vport->port_type != LPFC_PHYSICAL_PORT)) 2398 return; 2399 2400 /* Link up discovery */ 2401 if ((mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL)) != NULL) { 2402 phba->link_state = LPFC_CLEAR_LA; 2403 lpfc_clear_la(phba, mbox); 2404 mbox->mbox_cmpl = lpfc_mbx_cmpl_clear_la; 2405 mbox->vport = vport; 2406 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT); 2407 if (rc == MBX_NOT_FINISHED) { 2408 mempool_free(mbox, phba->mbox_mem_pool); 2409 lpfc_disc_flush_list(vport); 2410 extra_ring->flag &= ~LPFC_STOP_IOCB_EVENT; 2411 fcp_ring->flag &= ~LPFC_STOP_IOCB_EVENT; 2412 next_ring->flag &= ~LPFC_STOP_IOCB_EVENT; 2413 phba->link_state = LPFC_HBA_ERROR; 2414 } 2415 } 2416 } 2417 2418 /* Reg_vpi to tell firmware to resume normal operations */ 2419 void 2420 lpfc_issue_reg_vpi(struct lpfc_hba *phba, struct lpfc_vport *vport) 2421 { 2422 LPFC_MBOXQ_t *regvpimbox; 2423 2424 regvpimbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 2425 if (regvpimbox) { 2426 lpfc_reg_vpi(phba, vport->vpi, vport->fc_myDID, regvpimbox); 2427 regvpimbox->mbox_cmpl = lpfc_mbx_cmpl_reg_vpi; 2428 regvpimbox->vport = vport; 2429 if (lpfc_sli_issue_mbox(phba, regvpimbox, MBX_NOWAIT) 2430 == MBX_NOT_FINISHED) { 2431 mempool_free(regvpimbox, phba->mbox_mem_pool); 2432 } 2433 } 2434 } 2435 2436 /* Start Link up / RSCN discovery on NPR nodes */ 2437 void 2438 lpfc_disc_start(struct lpfc_vport *vport) 2439 { 2440 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 2441 struct lpfc_hba *phba = vport->phba; 2442 uint32_t num_sent; 2443 uint32_t clear_la_pending; 2444 int did_changed; 2445 2446 if (!lpfc_is_link_up(phba)) 2447 return; 2448 2449 if (phba->link_state == LPFC_CLEAR_LA) 2450 clear_la_pending = 1; 2451 else 2452 clear_la_pending = 0; 2453 2454 if (vport->port_state < LPFC_VPORT_READY) 2455 vport->port_state = LPFC_DISC_AUTH; 2456 2457 lpfc_set_disctmo(vport); 2458 2459 if (vport->fc_prevDID == vport->fc_myDID) 2460 did_changed = 0; 2461 else 2462 did_changed = 1; 2463 2464 vport->fc_prevDID = vport->fc_myDID; 2465 vport->num_disc_nodes = 0; 2466 2467 /* Start Discovery state <hba_state> */ 2468 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, 2469 "0202 Start Discovery hba state x%x " 2470 "Data: x%x x%x x%x\n", 2471 vport->port_state, vport->fc_flag, vport->fc_plogi_cnt, 2472 vport->fc_adisc_cnt); 2473 2474 /* First do ADISCs - if any */ 2475 num_sent = lpfc_els_disc_adisc(vport); 2476 2477 if (num_sent) 2478 return; 2479 2480 /* 2481 * For SLI3, cmpl_reg_vpi will set port_state to READY, and 2482 * continue discovery. 2483 */ 2484 if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) && 2485 !(vport->fc_flag & FC_PT2PT) && 2486 !(vport->fc_flag & FC_RSCN_MODE)) { 2487 lpfc_issue_reg_vpi(phba, vport); 2488 return; 2489 } 2490 2491 /* 2492 * For SLI2, we need to set port_state to READY and continue 2493 * discovery. 2494 */ 2495 if (vport->port_state < LPFC_VPORT_READY && !clear_la_pending) { 2496 /* If we get here, there is nothing to ADISC */ 2497 if (vport->port_type == LPFC_PHYSICAL_PORT) 2498 lpfc_issue_clear_la(phba, vport); 2499 2500 if (!(vport->fc_flag & FC_ABORT_DISCOVERY)) { 2501 vport->num_disc_nodes = 0; 2502 /* go thru NPR nodes and issue ELS PLOGIs */ 2503 if (vport->fc_npr_cnt) 2504 lpfc_els_disc_plogi(vport); 2505 2506 if (!vport->num_disc_nodes) { 2507 spin_lock_irq(shost->host_lock); 2508 vport->fc_flag &= ~FC_NDISC_ACTIVE; 2509 spin_unlock_irq(shost->host_lock); 2510 lpfc_can_disctmo(vport); 2511 } 2512 } 2513 vport->port_state = LPFC_VPORT_READY; 2514 } else { 2515 /* Next do PLOGIs - if any */ 2516 num_sent = lpfc_els_disc_plogi(vport); 2517 2518 if (num_sent) 2519 return; 2520 2521 if (vport->fc_flag & FC_RSCN_MODE) { 2522 /* Check to see if more RSCNs came in while we 2523 * were processing this one. 2524 */ 2525 if ((vport->fc_rscn_id_cnt == 0) && 2526 (!(vport->fc_flag & FC_RSCN_DISCOVERY))) { 2527 spin_lock_irq(shost->host_lock); 2528 vport->fc_flag &= ~FC_RSCN_MODE; 2529 spin_unlock_irq(shost->host_lock); 2530 lpfc_can_disctmo(vport); 2531 } else 2532 lpfc_els_handle_rscn(vport); 2533 } 2534 } 2535 return; 2536 } 2537 2538 /* 2539 * Ignore completion for all IOCBs on tx and txcmpl queue for ELS 2540 * ring the match the sppecified nodelist. 2541 */ 2542 static void 2543 lpfc_free_tx(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp) 2544 { 2545 LIST_HEAD(completions); 2546 struct lpfc_sli *psli; 2547 IOCB_t *icmd; 2548 struct lpfc_iocbq *iocb, *next_iocb; 2549 struct lpfc_sli_ring *pring; 2550 2551 psli = &phba->sli; 2552 pring = &psli->ring[LPFC_ELS_RING]; 2553 2554 /* Error matching iocb on txq or txcmplq 2555 * First check the txq. 2556 */ 2557 spin_lock_irq(&phba->hbalock); 2558 list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) { 2559 if (iocb->context1 != ndlp) { 2560 continue; 2561 } 2562 icmd = &iocb->iocb; 2563 if ((icmd->ulpCommand == CMD_ELS_REQUEST64_CR) || 2564 (icmd->ulpCommand == CMD_XMIT_ELS_RSP64_CX)) { 2565 2566 list_move_tail(&iocb->list, &completions); 2567 pring->txq_cnt--; 2568 } 2569 } 2570 2571 /* Next check the txcmplq */ 2572 list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq, list) { 2573 if (iocb->context1 != ndlp) { 2574 continue; 2575 } 2576 icmd = &iocb->iocb; 2577 if (icmd->ulpCommand == CMD_ELS_REQUEST64_CR || 2578 icmd->ulpCommand == CMD_XMIT_ELS_RSP64_CX) { 2579 lpfc_sli_issue_abort_iotag(phba, pring, iocb); 2580 } 2581 } 2582 spin_unlock_irq(&phba->hbalock); 2583 2584 while (!list_empty(&completions)) { 2585 iocb = list_get_first(&completions, struct lpfc_iocbq, list); 2586 list_del_init(&iocb->list); 2587 2588 if (!iocb->iocb_cmpl) 2589 lpfc_sli_release_iocbq(phba, iocb); 2590 else { 2591 icmd = &iocb->iocb; 2592 icmd->ulpStatus = IOSTAT_LOCAL_REJECT; 2593 icmd->un.ulpWord[4] = IOERR_SLI_ABORTED; 2594 (iocb->iocb_cmpl) (phba, iocb, iocb); 2595 } 2596 } 2597 } 2598 2599 static void 2600 lpfc_disc_flush_list(struct lpfc_vport *vport) 2601 { 2602 struct lpfc_nodelist *ndlp, *next_ndlp; 2603 struct lpfc_hba *phba = vport->phba; 2604 2605 if (vport->fc_plogi_cnt || vport->fc_adisc_cnt) { 2606 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, 2607 nlp_listp) { 2608 if (!NLP_CHK_NODE_ACT(ndlp)) 2609 continue; 2610 if (ndlp->nlp_state == NLP_STE_PLOGI_ISSUE || 2611 ndlp->nlp_state == NLP_STE_ADISC_ISSUE) { 2612 lpfc_free_tx(phba, ndlp); 2613 } 2614 } 2615 } 2616 } 2617 2618 void 2619 lpfc_cleanup_discovery_resources(struct lpfc_vport *vport) 2620 { 2621 lpfc_els_flush_rscn(vport); 2622 lpfc_els_flush_cmd(vport); 2623 lpfc_disc_flush_list(vport); 2624 } 2625 2626 /*****************************************************************************/ 2627 /* 2628 * NAME: lpfc_disc_timeout 2629 * 2630 * FUNCTION: Fibre Channel driver discovery timeout routine. 2631 * 2632 * EXECUTION ENVIRONMENT: interrupt only 2633 * 2634 * CALLED FROM: 2635 * Timer function 2636 * 2637 * RETURNS: 2638 * none 2639 */ 2640 /*****************************************************************************/ 2641 void 2642 lpfc_disc_timeout(unsigned long ptr) 2643 { 2644 struct lpfc_vport *vport = (struct lpfc_vport *) ptr; 2645 struct lpfc_hba *phba = vport->phba; 2646 unsigned long flags = 0; 2647 2648 if (unlikely(!phba)) 2649 return; 2650 2651 if ((vport->work_port_events & WORKER_DISC_TMO) == 0) { 2652 spin_lock_irqsave(&vport->work_port_lock, flags); 2653 vport->work_port_events |= WORKER_DISC_TMO; 2654 spin_unlock_irqrestore(&vport->work_port_lock, flags); 2655 2656 spin_lock_irqsave(&phba->hbalock, flags); 2657 if (phba->work_wait) 2658 lpfc_worker_wake_up(phba); 2659 spin_unlock_irqrestore(&phba->hbalock, flags); 2660 } 2661 return; 2662 } 2663 2664 static void 2665 lpfc_disc_timeout_handler(struct lpfc_vport *vport) 2666 { 2667 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 2668 struct lpfc_hba *phba = vport->phba; 2669 struct lpfc_sli *psli = &phba->sli; 2670 struct lpfc_nodelist *ndlp, *next_ndlp; 2671 LPFC_MBOXQ_t *initlinkmbox; 2672 int rc, clrlaerr = 0; 2673 2674 if (!(vport->fc_flag & FC_DISC_TMO)) 2675 return; 2676 2677 spin_lock_irq(shost->host_lock); 2678 vport->fc_flag &= ~FC_DISC_TMO; 2679 spin_unlock_irq(shost->host_lock); 2680 2681 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, 2682 "disc timeout: state:x%x rtry:x%x flg:x%x", 2683 vport->port_state, vport->fc_ns_retry, vport->fc_flag); 2684 2685 switch (vport->port_state) { 2686 2687 case LPFC_LOCAL_CFG_LINK: 2688 /* port_state is identically LPFC_LOCAL_CFG_LINK while waiting for 2689 * FAN 2690 */ 2691 /* FAN timeout */ 2692 lpfc_printf_vlog(vport, KERN_WARNING, LOG_DISCOVERY, 2693 "0221 FAN timeout\n"); 2694 /* Start discovery by sending FLOGI, clean up old rpis */ 2695 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, 2696 nlp_listp) { 2697 if (!NLP_CHK_NODE_ACT(ndlp)) 2698 continue; 2699 if (ndlp->nlp_state != NLP_STE_NPR_NODE) 2700 continue; 2701 if (ndlp->nlp_type & NLP_FABRIC) { 2702 /* Clean up the ndlp on Fabric connections */ 2703 lpfc_drop_node(vport, ndlp); 2704 2705 } else if (!(ndlp->nlp_flag & NLP_NPR_ADISC)) { 2706 /* Fail outstanding IO now since device 2707 * is marked for PLOGI. 2708 */ 2709 lpfc_unreg_rpi(vport, ndlp); 2710 } 2711 } 2712 if (vport->port_state != LPFC_FLOGI) { 2713 lpfc_initial_flogi(vport); 2714 return; 2715 } 2716 break; 2717 2718 case LPFC_FDISC: 2719 case LPFC_FLOGI: 2720 /* port_state is identically LPFC_FLOGI while waiting for FLOGI cmpl */ 2721 /* Initial FLOGI timeout */ 2722 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY, 2723 "0222 Initial %s timeout\n", 2724 vport->vpi ? "FDISC" : "FLOGI"); 2725 2726 /* Assume no Fabric and go on with discovery. 2727 * Check for outstanding ELS FLOGI to abort. 2728 */ 2729 2730 /* FLOGI failed, so just use loop map to make discovery list */ 2731 lpfc_disc_list_loopmap(vport); 2732 2733 /* Start discovery */ 2734 lpfc_disc_start(vport); 2735 break; 2736 2737 case LPFC_FABRIC_CFG_LINK: 2738 /* hba_state is identically LPFC_FABRIC_CFG_LINK while waiting for 2739 NameServer login */ 2740 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY, 2741 "0223 Timeout while waiting for " 2742 "NameServer login\n"); 2743 /* Next look for NameServer ndlp */ 2744 ndlp = lpfc_findnode_did(vport, NameServer_DID); 2745 if (ndlp && NLP_CHK_NODE_ACT(ndlp)) 2746 lpfc_els_abort(phba, ndlp); 2747 2748 /* ReStart discovery */ 2749 goto restart_disc; 2750 2751 case LPFC_NS_QRY: 2752 /* Check for wait for NameServer Rsp timeout */ 2753 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY, 2754 "0224 NameServer Query timeout " 2755 "Data: x%x x%x\n", 2756 vport->fc_ns_retry, LPFC_MAX_NS_RETRY); 2757 2758 if (vport->fc_ns_retry < LPFC_MAX_NS_RETRY) { 2759 /* Try it one more time */ 2760 vport->fc_ns_retry++; 2761 rc = lpfc_ns_cmd(vport, SLI_CTNS_GID_FT, 2762 vport->fc_ns_retry, 0); 2763 if (rc == 0) 2764 break; 2765 } 2766 vport->fc_ns_retry = 0; 2767 2768 restart_disc: 2769 /* 2770 * Discovery is over. 2771 * set port_state to PORT_READY if SLI2. 2772 * cmpl_reg_vpi will set port_state to READY for SLI3. 2773 */ 2774 if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) 2775 lpfc_issue_reg_vpi(phba, vport); 2776 else { /* NPIV Not enabled */ 2777 lpfc_issue_clear_la(phba, vport); 2778 vport->port_state = LPFC_VPORT_READY; 2779 } 2780 2781 /* Setup and issue mailbox INITIALIZE LINK command */ 2782 initlinkmbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 2783 if (!initlinkmbox) { 2784 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY, 2785 "0206 Device Discovery " 2786 "completion error\n"); 2787 phba->link_state = LPFC_HBA_ERROR; 2788 break; 2789 } 2790 2791 lpfc_linkdown(phba); 2792 lpfc_init_link(phba, initlinkmbox, phba->cfg_topology, 2793 phba->cfg_link_speed); 2794 initlinkmbox->mb.un.varInitLnk.lipsr_AL_PA = 0; 2795 initlinkmbox->vport = vport; 2796 initlinkmbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl; 2797 rc = lpfc_sli_issue_mbox(phba, initlinkmbox, MBX_NOWAIT); 2798 lpfc_set_loopback_flag(phba); 2799 if (rc == MBX_NOT_FINISHED) 2800 mempool_free(initlinkmbox, phba->mbox_mem_pool); 2801 2802 break; 2803 2804 case LPFC_DISC_AUTH: 2805 /* Node Authentication timeout */ 2806 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY, 2807 "0227 Node Authentication timeout\n"); 2808 lpfc_disc_flush_list(vport); 2809 2810 /* 2811 * set port_state to PORT_READY if SLI2. 2812 * cmpl_reg_vpi will set port_state to READY for SLI3. 2813 */ 2814 if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) 2815 lpfc_issue_reg_vpi(phba, vport); 2816 else { /* NPIV Not enabled */ 2817 lpfc_issue_clear_la(phba, vport); 2818 vport->port_state = LPFC_VPORT_READY; 2819 } 2820 break; 2821 2822 case LPFC_VPORT_READY: 2823 if (vport->fc_flag & FC_RSCN_MODE) { 2824 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY, 2825 "0231 RSCN timeout Data: x%x " 2826 "x%x\n", 2827 vport->fc_ns_retry, LPFC_MAX_NS_RETRY); 2828 2829 /* Cleanup any outstanding ELS commands */ 2830 lpfc_els_flush_cmd(vport); 2831 2832 lpfc_els_flush_rscn(vport); 2833 lpfc_disc_flush_list(vport); 2834 } 2835 break; 2836 2837 default: 2838 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY, 2839 "0229 Unexpected discovery timeout, " 2840 "vport State x%x\n", vport->port_state); 2841 break; 2842 } 2843 2844 switch (phba->link_state) { 2845 case LPFC_CLEAR_LA: 2846 /* CLEAR LA timeout */ 2847 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY, 2848 "0228 CLEAR LA timeout\n"); 2849 clrlaerr = 1; 2850 break; 2851 2852 case LPFC_LINK_UP: 2853 lpfc_issue_clear_la(phba, vport); 2854 /* Drop thru */ 2855 case LPFC_LINK_UNKNOWN: 2856 case LPFC_WARM_START: 2857 case LPFC_INIT_START: 2858 case LPFC_INIT_MBX_CMDS: 2859 case LPFC_LINK_DOWN: 2860 case LPFC_HBA_ERROR: 2861 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY, 2862 "0230 Unexpected timeout, hba link " 2863 "state x%x\n", phba->link_state); 2864 clrlaerr = 1; 2865 break; 2866 2867 case LPFC_HBA_READY: 2868 break; 2869 } 2870 2871 if (clrlaerr) { 2872 lpfc_disc_flush_list(vport); 2873 psli->ring[(psli->extra_ring)].flag &= ~LPFC_STOP_IOCB_EVENT; 2874 psli->ring[(psli->fcp_ring)].flag &= ~LPFC_STOP_IOCB_EVENT; 2875 psli->ring[(psli->next_ring)].flag &= ~LPFC_STOP_IOCB_EVENT; 2876 vport->port_state = LPFC_VPORT_READY; 2877 } 2878 2879 return; 2880 } 2881 2882 /* 2883 * This routine handles processing a NameServer REG_LOGIN mailbox 2884 * command upon completion. It is setup in the LPFC_MBOXQ 2885 * as the completion routine when the command is 2886 * handed off to the SLI layer. 2887 */ 2888 void 2889 lpfc_mbx_cmpl_fdmi_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 2890 { 2891 MAILBOX_t *mb = &pmb->mb; 2892 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1); 2893 struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) pmb->context2; 2894 struct lpfc_vport *vport = pmb->vport; 2895 2896 pmb->context1 = NULL; 2897 2898 ndlp->nlp_rpi = mb->un.varWords[0]; 2899 ndlp->nlp_type |= NLP_FABRIC; 2900 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE); 2901 2902 /* 2903 * Start issuing Fabric-Device Management Interface (FDMI) command to 2904 * 0xfffffa (FDMI well known port) or Delay issuing FDMI command if 2905 * fdmi-on=2 (supporting RPA/hostnmae) 2906 */ 2907 2908 if (vport->cfg_fdmi_on == 1) 2909 lpfc_fdmi_cmd(vport, ndlp, SLI_MGMT_DHBA); 2910 else 2911 mod_timer(&vport->fc_fdmitmo, jiffies + HZ * 60); 2912 2913 /* decrement the node reference count held for this callback 2914 * function. 2915 */ 2916 lpfc_nlp_put(ndlp); 2917 lpfc_mbuf_free(phba, mp->virt, mp->phys); 2918 kfree(mp); 2919 mempool_free(pmb, phba->mbox_mem_pool); 2920 2921 return; 2922 } 2923 2924 static int 2925 lpfc_filter_by_rpi(struct lpfc_nodelist *ndlp, void *param) 2926 { 2927 uint16_t *rpi = param; 2928 2929 return ndlp->nlp_rpi == *rpi; 2930 } 2931 2932 static int 2933 lpfc_filter_by_wwpn(struct lpfc_nodelist *ndlp, void *param) 2934 { 2935 return memcmp(&ndlp->nlp_portname, param, 2936 sizeof(ndlp->nlp_portname)) == 0; 2937 } 2938 2939 static struct lpfc_nodelist * 2940 __lpfc_find_node(struct lpfc_vport *vport, node_filter filter, void *param) 2941 { 2942 struct lpfc_nodelist *ndlp; 2943 2944 list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) { 2945 if (filter(ndlp, param)) 2946 return ndlp; 2947 } 2948 return NULL; 2949 } 2950 2951 /* 2952 * This routine looks up the ndlp lists for the given RPI. If rpi found it 2953 * returns the node list element pointer else return NULL. 2954 */ 2955 struct lpfc_nodelist * 2956 __lpfc_findnode_rpi(struct lpfc_vport *vport, uint16_t rpi) 2957 { 2958 return __lpfc_find_node(vport, lpfc_filter_by_rpi, &rpi); 2959 } 2960 2961 /* 2962 * This routine looks up the ndlp lists for the given WWPN. If WWPN found it 2963 * returns the node element list pointer else return NULL. 2964 */ 2965 struct lpfc_nodelist * 2966 lpfc_findnode_wwpn(struct lpfc_vport *vport, struct lpfc_name *wwpn) 2967 { 2968 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 2969 struct lpfc_nodelist *ndlp; 2970 2971 spin_lock_irq(shost->host_lock); 2972 ndlp = __lpfc_find_node(vport, lpfc_filter_by_wwpn, wwpn); 2973 spin_unlock_irq(shost->host_lock); 2974 return ndlp; 2975 } 2976 2977 void 2978 lpfc_nlp_init(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 2979 uint32_t did) 2980 { 2981 memset(ndlp, 0, sizeof (struct lpfc_nodelist)); 2982 INIT_LIST_HEAD(&ndlp->els_retry_evt.evt_listp); 2983 INIT_LIST_HEAD(&ndlp->dev_loss_evt.evt_listp); 2984 init_timer(&ndlp->nlp_delayfunc); 2985 ndlp->nlp_delayfunc.function = lpfc_els_retry_delay; 2986 ndlp->nlp_delayfunc.data = (unsigned long)ndlp; 2987 ndlp->nlp_DID = did; 2988 ndlp->vport = vport; 2989 ndlp->nlp_sid = NLP_NO_SID; 2990 INIT_LIST_HEAD(&ndlp->nlp_listp); 2991 kref_init(&ndlp->kref); 2992 NLP_INT_NODE_ACT(ndlp); 2993 2994 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE, 2995 "node init: did:x%x", 2996 ndlp->nlp_DID, 0, 0); 2997 2998 return; 2999 } 3000 3001 /* This routine releases all resources associated with a specifc NPort's ndlp 3002 * and mempool_free's the nodelist. 3003 */ 3004 static void 3005 lpfc_nlp_release(struct kref *kref) 3006 { 3007 struct lpfc_hba *phba; 3008 unsigned long flags; 3009 struct lpfc_nodelist *ndlp = container_of(kref, struct lpfc_nodelist, 3010 kref); 3011 3012 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE, 3013 "node release: did:x%x flg:x%x type:x%x", 3014 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type); 3015 3016 lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_NODE, 3017 "0279 lpfc_nlp_release: ndlp:x%p " 3018 "usgmap:x%x refcnt:%d\n", 3019 (void *)ndlp, ndlp->nlp_usg_map, 3020 atomic_read(&ndlp->kref.refcount)); 3021 3022 /* remove ndlp from action. */ 3023 lpfc_nlp_remove(ndlp->vport, ndlp); 3024 3025 /* clear the ndlp active flag for all release cases */ 3026 phba = ndlp->vport->phba; 3027 spin_lock_irqsave(&phba->ndlp_lock, flags); 3028 NLP_CLR_NODE_ACT(ndlp); 3029 spin_unlock_irqrestore(&phba->ndlp_lock, flags); 3030 3031 /* free ndlp memory for final ndlp release */ 3032 if (NLP_CHK_FREE_REQ(ndlp)) 3033 mempool_free(ndlp, ndlp->vport->phba->nlp_mem_pool); 3034 } 3035 3036 /* This routine bumps the reference count for a ndlp structure to ensure 3037 * that one discovery thread won't free a ndlp while another discovery thread 3038 * is using it. 3039 */ 3040 struct lpfc_nodelist * 3041 lpfc_nlp_get(struct lpfc_nodelist *ndlp) 3042 { 3043 struct lpfc_hba *phba; 3044 unsigned long flags; 3045 3046 if (ndlp) { 3047 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE, 3048 "node get: did:x%x flg:x%x refcnt:x%x", 3049 ndlp->nlp_DID, ndlp->nlp_flag, 3050 atomic_read(&ndlp->kref.refcount)); 3051 /* The check of ndlp usage to prevent incrementing the 3052 * ndlp reference count that is in the process of being 3053 * released. 3054 */ 3055 phba = ndlp->vport->phba; 3056 spin_lock_irqsave(&phba->ndlp_lock, flags); 3057 if (!NLP_CHK_NODE_ACT(ndlp) || NLP_CHK_FREE_ACK(ndlp)) { 3058 spin_unlock_irqrestore(&phba->ndlp_lock, flags); 3059 lpfc_printf_vlog(ndlp->vport, KERN_WARNING, LOG_NODE, 3060 "0276 lpfc_nlp_get: ndlp:x%p " 3061 "usgmap:x%x refcnt:%d\n", 3062 (void *)ndlp, ndlp->nlp_usg_map, 3063 atomic_read(&ndlp->kref.refcount)); 3064 return NULL; 3065 } else 3066 kref_get(&ndlp->kref); 3067 spin_unlock_irqrestore(&phba->ndlp_lock, flags); 3068 } 3069 return ndlp; 3070 } 3071 3072 /* This routine decrements the reference count for a ndlp structure. If the 3073 * count goes to 0, this indicates the the associated nodelist should be 3074 * freed. Returning 1 indicates the ndlp resource has been released; on the 3075 * other hand, returning 0 indicates the ndlp resource has not been released 3076 * yet. 3077 */ 3078 int 3079 lpfc_nlp_put(struct lpfc_nodelist *ndlp) 3080 { 3081 struct lpfc_hba *phba; 3082 unsigned long flags; 3083 3084 if (!ndlp) 3085 return 1; 3086 3087 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE, 3088 "node put: did:x%x flg:x%x refcnt:x%x", 3089 ndlp->nlp_DID, ndlp->nlp_flag, 3090 atomic_read(&ndlp->kref.refcount)); 3091 phba = ndlp->vport->phba; 3092 spin_lock_irqsave(&phba->ndlp_lock, flags); 3093 /* Check the ndlp memory free acknowledge flag to avoid the 3094 * possible race condition that kref_put got invoked again 3095 * after previous one has done ndlp memory free. 3096 */ 3097 if (NLP_CHK_FREE_ACK(ndlp)) { 3098 spin_unlock_irqrestore(&phba->ndlp_lock, flags); 3099 lpfc_printf_vlog(ndlp->vport, KERN_WARNING, LOG_NODE, 3100 "0274 lpfc_nlp_put: ndlp:x%p " 3101 "usgmap:x%x refcnt:%d\n", 3102 (void *)ndlp, ndlp->nlp_usg_map, 3103 atomic_read(&ndlp->kref.refcount)); 3104 return 1; 3105 } 3106 /* Check the ndlp inactivate log flag to avoid the possible 3107 * race condition that kref_put got invoked again after ndlp 3108 * is already in inactivating state. 3109 */ 3110 if (NLP_CHK_IACT_REQ(ndlp)) { 3111 spin_unlock_irqrestore(&phba->ndlp_lock, flags); 3112 lpfc_printf_vlog(ndlp->vport, KERN_WARNING, LOG_NODE, 3113 "0275 lpfc_nlp_put: ndlp:x%p " 3114 "usgmap:x%x refcnt:%d\n", 3115 (void *)ndlp, ndlp->nlp_usg_map, 3116 atomic_read(&ndlp->kref.refcount)); 3117 return 1; 3118 } 3119 /* For last put, mark the ndlp usage flags to make sure no 3120 * other kref_get and kref_put on the same ndlp shall get 3121 * in between the process when the final kref_put has been 3122 * invoked on this ndlp. 3123 */ 3124 if (atomic_read(&ndlp->kref.refcount) == 1) { 3125 /* Indicate ndlp is put to inactive state. */ 3126 NLP_SET_IACT_REQ(ndlp); 3127 /* Acknowledge ndlp memory free has been seen. */ 3128 if (NLP_CHK_FREE_REQ(ndlp)) 3129 NLP_SET_FREE_ACK(ndlp); 3130 } 3131 spin_unlock_irqrestore(&phba->ndlp_lock, flags); 3132 /* Note, the kref_put returns 1 when decrementing a reference 3133 * count that was 1, it invokes the release callback function, 3134 * but it still left the reference count as 1 (not actually 3135 * performs the last decrementation). Otherwise, it actually 3136 * decrements the reference count and returns 0. 3137 */ 3138 return kref_put(&ndlp->kref, lpfc_nlp_release); 3139 } 3140 3141 /* This routine free's the specified nodelist if it is not in use 3142 * by any other discovery thread. This routine returns 1 if the 3143 * ndlp has been freed. A return value of 0 indicates the ndlp is 3144 * not yet been released. 3145 */ 3146 int 3147 lpfc_nlp_not_used(struct lpfc_nodelist *ndlp) 3148 { 3149 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE, 3150 "node not used: did:x%x flg:x%x refcnt:x%x", 3151 ndlp->nlp_DID, ndlp->nlp_flag, 3152 atomic_read(&ndlp->kref.refcount)); 3153 if (atomic_read(&ndlp->kref.refcount) == 1) 3154 if (lpfc_nlp_put(ndlp)) 3155 return 1; 3156 return 0; 3157 } 3158