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 if (evtp->evt_arg1) { 157 evtp->evt = LPFC_EVT_DEV_LOSS; 158 list_add_tail(&evtp->evt_listp, &phba->work_list); 159 lpfc_worker_wake_up(phba); 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 static void 280 lpfc_work_list_done(struct lpfc_hba *phba) 281 { 282 struct lpfc_work_evt *evtp = NULL; 283 struct lpfc_nodelist *ndlp; 284 int free_evt; 285 286 spin_lock_irq(&phba->hbalock); 287 while (!list_empty(&phba->work_list)) { 288 list_remove_head((&phba->work_list), evtp, typeof(*evtp), 289 evt_listp); 290 spin_unlock_irq(&phba->hbalock); 291 free_evt = 1; 292 switch (evtp->evt) { 293 case LPFC_EVT_ELS_RETRY: 294 ndlp = (struct lpfc_nodelist *) (evtp->evt_arg1); 295 lpfc_els_retry_delay_handler(ndlp); 296 free_evt = 0; /* evt is part of ndlp */ 297 /* decrement the node reference count held 298 * for this queued work 299 */ 300 lpfc_nlp_put(ndlp); 301 break; 302 case LPFC_EVT_DEV_LOSS: 303 ndlp = (struct lpfc_nodelist *)(evtp->evt_arg1); 304 lpfc_dev_loss_tmo_handler(ndlp); 305 free_evt = 0; 306 /* decrement the node reference count held for 307 * this queued work 308 */ 309 lpfc_nlp_put(ndlp); 310 break; 311 case LPFC_EVT_ONLINE: 312 if (phba->link_state < LPFC_LINK_DOWN) 313 *(int *) (evtp->evt_arg1) = lpfc_online(phba); 314 else 315 *(int *) (evtp->evt_arg1) = 0; 316 complete((struct completion *)(evtp->evt_arg2)); 317 break; 318 case LPFC_EVT_OFFLINE_PREP: 319 if (phba->link_state >= LPFC_LINK_DOWN) 320 lpfc_offline_prep(phba); 321 *(int *)(evtp->evt_arg1) = 0; 322 complete((struct completion *)(evtp->evt_arg2)); 323 break; 324 case LPFC_EVT_OFFLINE: 325 lpfc_offline(phba); 326 lpfc_sli_brdrestart(phba); 327 *(int *)(evtp->evt_arg1) = 328 lpfc_sli_brdready(phba, HS_FFRDY | HS_MBRDY); 329 lpfc_unblock_mgmt_io(phba); 330 complete((struct completion *)(evtp->evt_arg2)); 331 break; 332 case LPFC_EVT_WARM_START: 333 lpfc_offline(phba); 334 lpfc_reset_barrier(phba); 335 lpfc_sli_brdreset(phba); 336 lpfc_hba_down_post(phba); 337 *(int *)(evtp->evt_arg1) = 338 lpfc_sli_brdready(phba, HS_MBRDY); 339 lpfc_unblock_mgmt_io(phba); 340 complete((struct completion *)(evtp->evt_arg2)); 341 break; 342 case LPFC_EVT_KILL: 343 lpfc_offline(phba); 344 *(int *)(evtp->evt_arg1) 345 = (phba->pport->stopped) 346 ? 0 : lpfc_sli_brdkill(phba); 347 lpfc_unblock_mgmt_io(phba); 348 complete((struct completion *)(evtp->evt_arg2)); 349 break; 350 } 351 if (free_evt) 352 kfree(evtp); 353 spin_lock_irq(&phba->hbalock); 354 } 355 spin_unlock_irq(&phba->hbalock); 356 357 } 358 359 static void 360 lpfc_work_done(struct lpfc_hba *phba) 361 { 362 struct lpfc_sli_ring *pring; 363 uint32_t ha_copy, status, control, work_port_events; 364 struct lpfc_vport **vports; 365 struct lpfc_vport *vport; 366 int i; 367 368 spin_lock_irq(&phba->hbalock); 369 ha_copy = phba->work_ha; 370 phba->work_ha = 0; 371 spin_unlock_irq(&phba->hbalock); 372 373 if (ha_copy & HA_ERATT) 374 lpfc_handle_eratt(phba); 375 376 if (ha_copy & HA_MBATT) 377 lpfc_sli_handle_mb_event(phba); 378 379 if (ha_copy & HA_LATT) 380 lpfc_handle_latt(phba); 381 vports = lpfc_create_vport_work_array(phba); 382 if (vports != NULL) 383 for(i = 0; i <= phba->max_vpi; i++) { 384 /* 385 * We could have no vports in array if unloading, so if 386 * this happens then just use the pport 387 */ 388 if (vports[i] == NULL && i == 0) 389 vport = phba->pport; 390 else 391 vport = vports[i]; 392 if (vport == NULL) 393 break; 394 spin_lock_irq(&vport->work_port_lock); 395 work_port_events = vport->work_port_events; 396 vport->work_port_events &= ~work_port_events; 397 spin_unlock_irq(&vport->work_port_lock); 398 if (work_port_events & WORKER_DISC_TMO) 399 lpfc_disc_timeout_handler(vport); 400 if (work_port_events & WORKER_ELS_TMO) 401 lpfc_els_timeout_handler(vport); 402 if (work_port_events & WORKER_HB_TMO) 403 lpfc_hb_timeout_handler(phba); 404 if (work_port_events & WORKER_MBOX_TMO) 405 lpfc_mbox_timeout_handler(phba); 406 if (work_port_events & WORKER_FABRIC_BLOCK_TMO) 407 lpfc_unblock_fabric_iocbs(phba); 408 if (work_port_events & WORKER_FDMI_TMO) 409 lpfc_fdmi_timeout_handler(vport); 410 if (work_port_events & WORKER_RAMP_DOWN_QUEUE) 411 lpfc_ramp_down_queue_handler(phba); 412 if (work_port_events & WORKER_RAMP_UP_QUEUE) 413 lpfc_ramp_up_queue_handler(phba); 414 } 415 lpfc_destroy_vport_work_array(phba, vports); 416 417 pring = &phba->sli.ring[LPFC_ELS_RING]; 418 status = (ha_copy & (HA_RXMASK << (4*LPFC_ELS_RING))); 419 status >>= (4*LPFC_ELS_RING); 420 if ((status & HA_RXMASK) 421 || (pring->flag & LPFC_DEFERRED_RING_EVENT)) { 422 if (pring->flag & LPFC_STOP_IOCB_EVENT) { 423 pring->flag |= LPFC_DEFERRED_RING_EVENT; 424 /* Set the lpfc data pending flag */ 425 set_bit(LPFC_DATA_READY, &phba->data_flags); 426 } else { 427 pring->flag &= ~LPFC_DEFERRED_RING_EVENT; 428 lpfc_sli_handle_slow_ring_event(phba, pring, 429 (status & 430 HA_RXMASK)); 431 } 432 /* 433 * Turn on Ring interrupts 434 */ 435 spin_lock_irq(&phba->hbalock); 436 control = readl(phba->HCregaddr); 437 if (!(control & (HC_R0INT_ENA << LPFC_ELS_RING))) { 438 lpfc_debugfs_slow_ring_trc(phba, 439 "WRK Enable ring: cntl:x%x hacopy:x%x", 440 control, ha_copy, 0); 441 442 control |= (HC_R0INT_ENA << LPFC_ELS_RING); 443 writel(control, phba->HCregaddr); 444 readl(phba->HCregaddr); /* flush */ 445 } 446 else { 447 lpfc_debugfs_slow_ring_trc(phba, 448 "WRK Ring ok: cntl:x%x hacopy:x%x", 449 control, ha_copy, 0); 450 } 451 spin_unlock_irq(&phba->hbalock); 452 } 453 lpfc_work_list_done(phba); 454 } 455 456 int 457 lpfc_do_work(void *p) 458 { 459 struct lpfc_hba *phba = p; 460 int rc; 461 462 set_user_nice(current, -20); 463 phba->data_flags = 0; 464 465 while (1) { 466 /* wait and check worker queue activities */ 467 rc = wait_event_interruptible(phba->work_waitq, 468 (test_and_clear_bit(LPFC_DATA_READY, 469 &phba->data_flags) 470 || kthread_should_stop())); 471 BUG_ON(rc); 472 473 if (kthread_should_stop()) 474 break; 475 476 /* Attend pending lpfc data processing */ 477 lpfc_work_done(phba); 478 } 479 return 0; 480 } 481 482 /* 483 * This is only called to handle FC worker events. Since this a rare 484 * occurance, we allocate a struct lpfc_work_evt structure here instead of 485 * embedding it in the IOCB. 486 */ 487 int 488 lpfc_workq_post_event(struct lpfc_hba *phba, void *arg1, void *arg2, 489 uint32_t evt) 490 { 491 struct lpfc_work_evt *evtp; 492 unsigned long flags; 493 494 /* 495 * All Mailbox completions and LPFC_ELS_RING rcv ring IOCB events will 496 * be queued to worker thread for processing 497 */ 498 evtp = kmalloc(sizeof(struct lpfc_work_evt), GFP_ATOMIC); 499 if (!evtp) 500 return 0; 501 502 evtp->evt_arg1 = arg1; 503 evtp->evt_arg2 = arg2; 504 evtp->evt = evt; 505 506 spin_lock_irqsave(&phba->hbalock, flags); 507 list_add_tail(&evtp->evt_listp, &phba->work_list); 508 spin_unlock_irqrestore(&phba->hbalock, flags); 509 510 lpfc_worker_wake_up(phba); 511 512 return 1; 513 } 514 515 void 516 lpfc_cleanup_rpis(struct lpfc_vport *vport, int remove) 517 { 518 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 519 struct lpfc_hba *phba = vport->phba; 520 struct lpfc_nodelist *ndlp, *next_ndlp; 521 int rc; 522 523 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) { 524 if (!NLP_CHK_NODE_ACT(ndlp)) 525 continue; 526 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE) 527 continue; 528 if ((phba->sli3_options & LPFC_SLI3_VPORT_TEARDOWN) || 529 ((vport->port_type == LPFC_NPIV_PORT) && 530 (ndlp->nlp_DID == NameServer_DID))) 531 lpfc_unreg_rpi(vport, ndlp); 532 533 /* Leave Fabric nodes alone on link down */ 534 if (!remove && ndlp->nlp_type & NLP_FABRIC) 535 continue; 536 rc = lpfc_disc_state_machine(vport, ndlp, NULL, 537 remove 538 ? NLP_EVT_DEVICE_RM 539 : NLP_EVT_DEVICE_RECOVERY); 540 } 541 if (phba->sli3_options & LPFC_SLI3_VPORT_TEARDOWN) { 542 lpfc_mbx_unreg_vpi(vport); 543 spin_lock_irq(shost->host_lock); 544 vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI; 545 spin_unlock_irq(shost->host_lock); 546 } 547 } 548 549 void 550 lpfc_port_link_failure(struct lpfc_vport *vport) 551 { 552 /* Cleanup any outstanding RSCN activity */ 553 lpfc_els_flush_rscn(vport); 554 555 /* Cleanup any outstanding ELS commands */ 556 lpfc_els_flush_cmd(vport); 557 558 lpfc_cleanup_rpis(vport, 0); 559 560 /* Turn off discovery timer if its running */ 561 lpfc_can_disctmo(vport); 562 } 563 564 static void 565 lpfc_linkdown_port(struct lpfc_vport *vport) 566 { 567 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 568 569 fc_host_post_event(shost, fc_get_event_number(), FCH_EVT_LINKDOWN, 0); 570 571 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, 572 "Link Down: state:x%x rtry:x%x flg:x%x", 573 vport->port_state, vport->fc_ns_retry, vport->fc_flag); 574 575 lpfc_port_link_failure(vport); 576 577 } 578 579 int 580 lpfc_linkdown(struct lpfc_hba *phba) 581 { 582 struct lpfc_vport *vport = phba->pport; 583 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 584 struct lpfc_vport **vports; 585 LPFC_MBOXQ_t *mb; 586 int i; 587 588 if (phba->link_state == LPFC_LINK_DOWN) 589 return 0; 590 spin_lock_irq(&phba->hbalock); 591 if (phba->link_state > LPFC_LINK_DOWN) { 592 phba->link_state = LPFC_LINK_DOWN; 593 phba->pport->fc_flag &= ~FC_LBIT; 594 } 595 spin_unlock_irq(&phba->hbalock); 596 vports = lpfc_create_vport_work_array(phba); 597 if (vports != NULL) 598 for(i = 0; i <= phba->max_vpi && vports[i] != NULL; i++) { 599 /* Issue a LINK DOWN event to all nodes */ 600 lpfc_linkdown_port(vports[i]); 601 } 602 lpfc_destroy_vport_work_array(phba, vports); 603 /* Clean up any firmware default rpi's */ 604 mb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 605 if (mb) { 606 lpfc_unreg_did(phba, 0xffff, 0xffffffff, mb); 607 mb->vport = vport; 608 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl; 609 if (lpfc_sli_issue_mbox(phba, mb, MBX_NOWAIT) 610 == MBX_NOT_FINISHED) { 611 mempool_free(mb, phba->mbox_mem_pool); 612 } 613 } 614 615 /* Setup myDID for link up if we are in pt2pt mode */ 616 if (phba->pport->fc_flag & FC_PT2PT) { 617 phba->pport->fc_myDID = 0; 618 mb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 619 if (mb) { 620 lpfc_config_link(phba, mb); 621 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl; 622 mb->vport = vport; 623 if (lpfc_sli_issue_mbox(phba, mb, MBX_NOWAIT) 624 == MBX_NOT_FINISHED) { 625 mempool_free(mb, phba->mbox_mem_pool); 626 } 627 } 628 spin_lock_irq(shost->host_lock); 629 phba->pport->fc_flag &= ~(FC_PT2PT | FC_PT2PT_PLOGI); 630 spin_unlock_irq(shost->host_lock); 631 } 632 633 return 0; 634 } 635 636 static void 637 lpfc_linkup_cleanup_nodes(struct lpfc_vport *vport) 638 { 639 struct lpfc_nodelist *ndlp; 640 641 list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) { 642 if (!NLP_CHK_NODE_ACT(ndlp)) 643 continue; 644 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE) 645 continue; 646 if (ndlp->nlp_type & NLP_FABRIC) { 647 /* On Linkup its safe to clean up the ndlp 648 * from Fabric connections. 649 */ 650 if (ndlp->nlp_DID != Fabric_DID) 651 lpfc_unreg_rpi(vport, ndlp); 652 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE); 653 } else if (!(ndlp->nlp_flag & NLP_NPR_ADISC)) { 654 /* Fail outstanding IO now since device is 655 * marked for PLOGI. 656 */ 657 lpfc_unreg_rpi(vport, ndlp); 658 } 659 } 660 } 661 662 static void 663 lpfc_linkup_port(struct lpfc_vport *vport) 664 { 665 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 666 struct lpfc_hba *phba = vport->phba; 667 668 if ((vport->load_flag & FC_UNLOADING) != 0) 669 return; 670 671 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, 672 "Link Up: top:x%x speed:x%x flg:x%x", 673 phba->fc_topology, phba->fc_linkspeed, phba->link_flag); 674 675 /* If NPIV is not enabled, only bring the physical port up */ 676 if (!(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) && 677 (vport != phba->pport)) 678 return; 679 680 fc_host_post_event(shost, fc_get_event_number(), FCH_EVT_LINKUP, 0); 681 682 spin_lock_irq(shost->host_lock); 683 vport->fc_flag &= ~(FC_PT2PT | FC_PT2PT_PLOGI | FC_ABORT_DISCOVERY | 684 FC_RSCN_MODE | FC_NLP_MORE | FC_RSCN_DISCOVERY); 685 vport->fc_flag |= FC_NDISC_ACTIVE; 686 vport->fc_ns_retry = 0; 687 spin_unlock_irq(shost->host_lock); 688 689 if (vport->fc_flag & FC_LBIT) 690 lpfc_linkup_cleanup_nodes(vport); 691 692 } 693 694 static int 695 lpfc_linkup(struct lpfc_hba *phba) 696 { 697 struct lpfc_vport **vports; 698 int i; 699 700 phba->link_state = LPFC_LINK_UP; 701 702 /* Unblock fabric iocbs if they are blocked */ 703 clear_bit(FABRIC_COMANDS_BLOCKED, &phba->bit_flags); 704 del_timer_sync(&phba->fabric_block_timer); 705 706 vports = lpfc_create_vport_work_array(phba); 707 if (vports != NULL) 708 for(i = 0; i <= phba->max_vpi && vports[i] != NULL; i++) 709 lpfc_linkup_port(vports[i]); 710 lpfc_destroy_vport_work_array(phba, vports); 711 if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) 712 lpfc_issue_clear_la(phba, phba->pport); 713 714 return 0; 715 } 716 717 /* 718 * This routine handles processing a CLEAR_LA mailbox 719 * command upon completion. It is setup in the LPFC_MBOXQ 720 * as the completion routine when the command is 721 * handed off to the SLI layer. 722 */ 723 static void 724 lpfc_mbx_cmpl_clear_la(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 725 { 726 struct lpfc_vport *vport = pmb->vport; 727 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 728 struct lpfc_sli *psli = &phba->sli; 729 MAILBOX_t *mb = &pmb->mb; 730 uint32_t control; 731 732 /* Since we don't do discovery right now, turn these off here */ 733 psli->ring[psli->extra_ring].flag &= ~LPFC_STOP_IOCB_EVENT; 734 psli->ring[psli->fcp_ring].flag &= ~LPFC_STOP_IOCB_EVENT; 735 psli->ring[psli->next_ring].flag &= ~LPFC_STOP_IOCB_EVENT; 736 737 /* Check for error */ 738 if ((mb->mbxStatus) && (mb->mbxStatus != 0x1601)) { 739 /* CLEAR_LA mbox error <mbxStatus> state <hba_state> */ 740 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX, 741 "0320 CLEAR_LA mbxStatus error x%x hba " 742 "state x%x\n", 743 mb->mbxStatus, vport->port_state); 744 phba->link_state = LPFC_HBA_ERROR; 745 goto out; 746 } 747 748 if (vport->port_type == LPFC_PHYSICAL_PORT) 749 phba->link_state = LPFC_HBA_READY; 750 751 spin_lock_irq(&phba->hbalock); 752 psli->sli_flag |= LPFC_PROCESS_LA; 753 control = readl(phba->HCregaddr); 754 control |= HC_LAINT_ENA; 755 writel(control, phba->HCregaddr); 756 readl(phba->HCregaddr); /* flush */ 757 spin_unlock_irq(&phba->hbalock); 758 mempool_free(pmb, phba->mbox_mem_pool); 759 return; 760 761 out: 762 /* Device Discovery completes */ 763 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, 764 "0225 Device Discovery completes\n"); 765 mempool_free(pmb, phba->mbox_mem_pool); 766 767 spin_lock_irq(shost->host_lock); 768 vport->fc_flag &= ~FC_ABORT_DISCOVERY; 769 spin_unlock_irq(shost->host_lock); 770 771 lpfc_can_disctmo(vport); 772 773 /* turn on Link Attention interrupts */ 774 775 spin_lock_irq(&phba->hbalock); 776 psli->sli_flag |= LPFC_PROCESS_LA; 777 control = readl(phba->HCregaddr); 778 control |= HC_LAINT_ENA; 779 writel(control, phba->HCregaddr); 780 readl(phba->HCregaddr); /* flush */ 781 spin_unlock_irq(&phba->hbalock); 782 783 return; 784 } 785 786 787 static void 788 lpfc_mbx_cmpl_local_config_link(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 789 { 790 struct lpfc_vport *vport = pmb->vport; 791 792 if (pmb->mb.mbxStatus) 793 goto out; 794 795 mempool_free(pmb, phba->mbox_mem_pool); 796 797 if (phba->fc_topology == TOPOLOGY_LOOP && 798 vport->fc_flag & FC_PUBLIC_LOOP && 799 !(vport->fc_flag & FC_LBIT)) { 800 /* Need to wait for FAN - use discovery timer 801 * for timeout. port_state is identically 802 * LPFC_LOCAL_CFG_LINK while waiting for FAN 803 */ 804 lpfc_set_disctmo(vport); 805 return; 806 } 807 808 /* Start discovery by sending a FLOGI. port_state is identically 809 * LPFC_FLOGI while waiting for FLOGI cmpl 810 */ 811 if (vport->port_state != LPFC_FLOGI) { 812 lpfc_initial_flogi(vport); 813 } 814 return; 815 816 out: 817 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX, 818 "0306 CONFIG_LINK mbxStatus error x%x " 819 "HBA state x%x\n", 820 pmb->mb.mbxStatus, vport->port_state); 821 mempool_free(pmb, phba->mbox_mem_pool); 822 823 lpfc_linkdown(phba); 824 825 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY, 826 "0200 CONFIG_LINK bad hba state x%x\n", 827 vport->port_state); 828 829 lpfc_issue_clear_la(phba, vport); 830 return; 831 } 832 833 static void 834 lpfc_mbx_cmpl_read_sparam(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 835 { 836 MAILBOX_t *mb = &pmb->mb; 837 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) pmb->context1; 838 struct lpfc_vport *vport = pmb->vport; 839 840 841 /* Check for error */ 842 if (mb->mbxStatus) { 843 /* READ_SPARAM mbox error <mbxStatus> state <hba_state> */ 844 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX, 845 "0319 READ_SPARAM mbxStatus error x%x " 846 "hba state x%x>\n", 847 mb->mbxStatus, vport->port_state); 848 lpfc_linkdown(phba); 849 goto out; 850 } 851 852 memcpy((uint8_t *) &vport->fc_sparam, (uint8_t *) mp->virt, 853 sizeof (struct serv_parm)); 854 if (phba->cfg_soft_wwnn) 855 u64_to_wwn(phba->cfg_soft_wwnn, 856 vport->fc_sparam.nodeName.u.wwn); 857 if (phba->cfg_soft_wwpn) 858 u64_to_wwn(phba->cfg_soft_wwpn, 859 vport->fc_sparam.portName.u.wwn); 860 memcpy(&vport->fc_nodename, &vport->fc_sparam.nodeName, 861 sizeof(vport->fc_nodename)); 862 memcpy(&vport->fc_portname, &vport->fc_sparam.portName, 863 sizeof(vport->fc_portname)); 864 if (vport->port_type == LPFC_PHYSICAL_PORT) { 865 memcpy(&phba->wwnn, &vport->fc_nodename, sizeof(phba->wwnn)); 866 memcpy(&phba->wwpn, &vport->fc_portname, sizeof(phba->wwnn)); 867 } 868 869 lpfc_mbuf_free(phba, mp->virt, mp->phys); 870 kfree(mp); 871 mempool_free(pmb, phba->mbox_mem_pool); 872 return; 873 874 out: 875 pmb->context1 = NULL; 876 lpfc_mbuf_free(phba, mp->virt, mp->phys); 877 kfree(mp); 878 lpfc_issue_clear_la(phba, vport); 879 mempool_free(pmb, phba->mbox_mem_pool); 880 return; 881 } 882 883 static void 884 lpfc_mbx_process_link_up(struct lpfc_hba *phba, READ_LA_VAR *la) 885 { 886 struct lpfc_vport *vport = phba->pport; 887 LPFC_MBOXQ_t *sparam_mbox, *cfglink_mbox; 888 int i; 889 struct lpfc_dmabuf *mp; 890 int rc; 891 892 sparam_mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 893 cfglink_mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 894 895 spin_lock_irq(&phba->hbalock); 896 switch (la->UlnkSpeed) { 897 case LA_1GHZ_LINK: 898 phba->fc_linkspeed = LA_1GHZ_LINK; 899 break; 900 case LA_2GHZ_LINK: 901 phba->fc_linkspeed = LA_2GHZ_LINK; 902 break; 903 case LA_4GHZ_LINK: 904 phba->fc_linkspeed = LA_4GHZ_LINK; 905 break; 906 case LA_8GHZ_LINK: 907 phba->fc_linkspeed = LA_8GHZ_LINK; 908 break; 909 default: 910 phba->fc_linkspeed = LA_UNKNW_LINK; 911 break; 912 } 913 914 phba->fc_topology = la->topology; 915 phba->link_flag &= ~LS_NPIV_FAB_SUPPORTED; 916 917 if (phba->fc_topology == TOPOLOGY_LOOP) { 918 phba->sli3_options &= ~LPFC_SLI3_NPIV_ENABLED; 919 920 if (phba->cfg_enable_npiv) 921 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT, 922 "1309 Link Up Event npiv not supported in loop " 923 "topology\n"); 924 /* Get Loop Map information */ 925 if (la->il) 926 vport->fc_flag |= FC_LBIT; 927 928 vport->fc_myDID = la->granted_AL_PA; 929 i = la->un.lilpBde64.tus.f.bdeSize; 930 931 if (i == 0) { 932 phba->alpa_map[0] = 0; 933 } else { 934 if (vport->cfg_log_verbose & LOG_LINK_EVENT) { 935 int numalpa, j, k; 936 union { 937 uint8_t pamap[16]; 938 struct { 939 uint32_t wd1; 940 uint32_t wd2; 941 uint32_t wd3; 942 uint32_t wd4; 943 } pa; 944 } un; 945 numalpa = phba->alpa_map[0]; 946 j = 0; 947 while (j < numalpa) { 948 memset(un.pamap, 0, 16); 949 for (k = 1; j < numalpa; k++) { 950 un.pamap[k - 1] = 951 phba->alpa_map[j + 1]; 952 j++; 953 if (k == 16) 954 break; 955 } 956 /* Link Up Event ALPA map */ 957 lpfc_printf_log(phba, 958 KERN_WARNING, 959 LOG_LINK_EVENT, 960 "1304 Link Up Event " 961 "ALPA map Data: x%x " 962 "x%x x%x x%x\n", 963 un.pa.wd1, un.pa.wd2, 964 un.pa.wd3, un.pa.wd4); 965 } 966 } 967 } 968 } else { 969 if (!(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)) { 970 if (phba->max_vpi && phba->cfg_enable_npiv && 971 (phba->sli_rev == 3)) 972 phba->sli3_options |= LPFC_SLI3_NPIV_ENABLED; 973 } 974 vport->fc_myDID = phba->fc_pref_DID; 975 vport->fc_flag |= FC_LBIT; 976 } 977 spin_unlock_irq(&phba->hbalock); 978 979 lpfc_linkup(phba); 980 if (sparam_mbox) { 981 lpfc_read_sparam(phba, sparam_mbox, 0); 982 sparam_mbox->vport = vport; 983 sparam_mbox->mbox_cmpl = lpfc_mbx_cmpl_read_sparam; 984 rc = lpfc_sli_issue_mbox(phba, sparam_mbox, MBX_NOWAIT); 985 if (rc == MBX_NOT_FINISHED) { 986 mp = (struct lpfc_dmabuf *) sparam_mbox->context1; 987 lpfc_mbuf_free(phba, mp->virt, mp->phys); 988 kfree(mp); 989 mempool_free(sparam_mbox, phba->mbox_mem_pool); 990 if (cfglink_mbox) 991 mempool_free(cfglink_mbox, phba->mbox_mem_pool); 992 goto out; 993 } 994 } 995 996 if (cfglink_mbox) { 997 vport->port_state = LPFC_LOCAL_CFG_LINK; 998 lpfc_config_link(phba, cfglink_mbox); 999 cfglink_mbox->vport = vport; 1000 cfglink_mbox->mbox_cmpl = lpfc_mbx_cmpl_local_config_link; 1001 rc = lpfc_sli_issue_mbox(phba, cfglink_mbox, MBX_NOWAIT); 1002 if (rc != MBX_NOT_FINISHED) 1003 return; 1004 mempool_free(cfglink_mbox, phba->mbox_mem_pool); 1005 } 1006 out: 1007 lpfc_vport_set_state(vport, FC_VPORT_FAILED); 1008 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX, 1009 "0263 Discovery Mailbox error: state: 0x%x : %p %p\n", 1010 vport->port_state, sparam_mbox, cfglink_mbox); 1011 lpfc_issue_clear_la(phba, vport); 1012 return; 1013 } 1014 1015 static void 1016 lpfc_mbx_issue_link_down(struct lpfc_hba *phba) 1017 { 1018 uint32_t control; 1019 struct lpfc_sli *psli = &phba->sli; 1020 1021 lpfc_linkdown(phba); 1022 1023 /* turn on Link Attention interrupts - no CLEAR_LA needed */ 1024 spin_lock_irq(&phba->hbalock); 1025 psli->sli_flag |= LPFC_PROCESS_LA; 1026 control = readl(phba->HCregaddr); 1027 control |= HC_LAINT_ENA; 1028 writel(control, phba->HCregaddr); 1029 readl(phba->HCregaddr); /* flush */ 1030 spin_unlock_irq(&phba->hbalock); 1031 } 1032 1033 /* 1034 * This routine handles processing a READ_LA mailbox 1035 * command upon completion. It is setup in the LPFC_MBOXQ 1036 * as the completion routine when the command is 1037 * handed off to the SLI layer. 1038 */ 1039 void 1040 lpfc_mbx_cmpl_read_la(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 1041 { 1042 struct lpfc_vport *vport = pmb->vport; 1043 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 1044 READ_LA_VAR *la; 1045 MAILBOX_t *mb = &pmb->mb; 1046 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1); 1047 1048 /* Unblock ELS traffic */ 1049 phba->sli.ring[LPFC_ELS_RING].flag &= ~LPFC_STOP_IOCB_EVENT; 1050 /* Check for error */ 1051 if (mb->mbxStatus) { 1052 lpfc_printf_log(phba, KERN_INFO, LOG_LINK_EVENT, 1053 "1307 READ_LA mbox error x%x state x%x\n", 1054 mb->mbxStatus, vport->port_state); 1055 lpfc_mbx_issue_link_down(phba); 1056 phba->link_state = LPFC_HBA_ERROR; 1057 goto lpfc_mbx_cmpl_read_la_free_mbuf; 1058 } 1059 1060 la = (READ_LA_VAR *) & pmb->mb.un.varReadLA; 1061 1062 memcpy(&phba->alpa_map[0], mp->virt, 128); 1063 1064 spin_lock_irq(shost->host_lock); 1065 if (la->pb) 1066 vport->fc_flag |= FC_BYPASSED_MODE; 1067 else 1068 vport->fc_flag &= ~FC_BYPASSED_MODE; 1069 spin_unlock_irq(shost->host_lock); 1070 1071 if (((phba->fc_eventTag + 1) < la->eventTag) || 1072 (phba->fc_eventTag == la->eventTag)) { 1073 phba->fc_stat.LinkMultiEvent++; 1074 if (la->attType == AT_LINK_UP) 1075 if (phba->fc_eventTag != 0) 1076 lpfc_linkdown(phba); 1077 } 1078 1079 phba->fc_eventTag = la->eventTag; 1080 1081 if (la->attType == AT_LINK_UP) { 1082 phba->fc_stat.LinkUp++; 1083 if (phba->link_flag & LS_LOOPBACK_MODE) { 1084 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT, 1085 "1306 Link Up Event in loop back mode " 1086 "x%x received Data: x%x x%x x%x x%x\n", 1087 la->eventTag, phba->fc_eventTag, 1088 la->granted_AL_PA, la->UlnkSpeed, 1089 phba->alpa_map[0]); 1090 } else { 1091 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT, 1092 "1303 Link Up Event x%x received " 1093 "Data: x%x x%x x%x x%x\n", 1094 la->eventTag, phba->fc_eventTag, 1095 la->granted_AL_PA, la->UlnkSpeed, 1096 phba->alpa_map[0]); 1097 } 1098 lpfc_mbx_process_link_up(phba, la); 1099 } else { 1100 phba->fc_stat.LinkDown++; 1101 if (phba->link_flag & LS_LOOPBACK_MODE) { 1102 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT, 1103 "1308 Link Down Event in loop back mode " 1104 "x%x received " 1105 "Data: x%x x%x x%x\n", 1106 la->eventTag, phba->fc_eventTag, 1107 phba->pport->port_state, vport->fc_flag); 1108 } 1109 else { 1110 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT, 1111 "1305 Link Down Event x%x received " 1112 "Data: x%x x%x x%x\n", 1113 la->eventTag, phba->fc_eventTag, 1114 phba->pport->port_state, vport->fc_flag); 1115 } 1116 lpfc_mbx_issue_link_down(phba); 1117 } 1118 1119 lpfc_mbx_cmpl_read_la_free_mbuf: 1120 lpfc_mbuf_free(phba, mp->virt, mp->phys); 1121 kfree(mp); 1122 mempool_free(pmb, phba->mbox_mem_pool); 1123 return; 1124 } 1125 1126 /* 1127 * This routine handles processing a REG_LOGIN mailbox 1128 * command upon completion. It is setup in the LPFC_MBOXQ 1129 * as the completion routine when the command is 1130 * handed off to the SLI layer. 1131 */ 1132 void 1133 lpfc_mbx_cmpl_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 1134 { 1135 struct lpfc_vport *vport = pmb->vport; 1136 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1); 1137 struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) pmb->context2; 1138 1139 pmb->context1 = NULL; 1140 1141 /* Good status, call state machine */ 1142 lpfc_disc_state_machine(vport, ndlp, pmb, NLP_EVT_CMPL_REG_LOGIN); 1143 lpfc_mbuf_free(phba, mp->virt, mp->phys); 1144 kfree(mp); 1145 mempool_free(pmb, phba->mbox_mem_pool); 1146 /* decrement the node reference count held for this callback 1147 * function. 1148 */ 1149 lpfc_nlp_put(ndlp); 1150 1151 return; 1152 } 1153 1154 static void 1155 lpfc_mbx_cmpl_unreg_vpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 1156 { 1157 MAILBOX_t *mb = &pmb->mb; 1158 struct lpfc_vport *vport = pmb->vport; 1159 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 1160 1161 switch (mb->mbxStatus) { 1162 case 0x0011: 1163 case 0x0020: 1164 case 0x9700: 1165 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE, 1166 "0911 cmpl_unreg_vpi, mb status = 0x%x\n", 1167 mb->mbxStatus); 1168 break; 1169 } 1170 vport->unreg_vpi_cmpl = VPORT_OK; 1171 mempool_free(pmb, phba->mbox_mem_pool); 1172 /* 1173 * This shost reference might have been taken at the beginning of 1174 * lpfc_vport_delete() 1175 */ 1176 if (vport->load_flag & FC_UNLOADING) 1177 scsi_host_put(shost); 1178 } 1179 1180 void 1181 lpfc_mbx_unreg_vpi(struct lpfc_vport *vport) 1182 { 1183 struct lpfc_hba *phba = vport->phba; 1184 LPFC_MBOXQ_t *mbox; 1185 int rc; 1186 1187 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 1188 if (!mbox) 1189 return; 1190 1191 lpfc_unreg_vpi(phba, vport->vpi, mbox); 1192 mbox->vport = vport; 1193 mbox->mbox_cmpl = lpfc_mbx_cmpl_unreg_vpi; 1194 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT); 1195 if (rc == MBX_NOT_FINISHED) { 1196 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX | LOG_VPORT, 1197 "1800 Could not issue unreg_vpi\n"); 1198 mempool_free(mbox, phba->mbox_mem_pool); 1199 vport->unreg_vpi_cmpl = VPORT_ERROR; 1200 } 1201 } 1202 1203 static void 1204 lpfc_mbx_cmpl_reg_vpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 1205 { 1206 struct lpfc_vport *vport = pmb->vport; 1207 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 1208 MAILBOX_t *mb = &pmb->mb; 1209 1210 switch (mb->mbxStatus) { 1211 case 0x0011: 1212 case 0x9601: 1213 case 0x9602: 1214 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE, 1215 "0912 cmpl_reg_vpi, mb status = 0x%x\n", 1216 mb->mbxStatus); 1217 lpfc_vport_set_state(vport, FC_VPORT_FAILED); 1218 spin_lock_irq(shost->host_lock); 1219 vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP); 1220 spin_unlock_irq(shost->host_lock); 1221 vport->fc_myDID = 0; 1222 goto out; 1223 } 1224 1225 vport->num_disc_nodes = 0; 1226 /* go thru NPR list and issue ELS PLOGIs */ 1227 if (vport->fc_npr_cnt) 1228 lpfc_els_disc_plogi(vport); 1229 1230 if (!vport->num_disc_nodes) { 1231 spin_lock_irq(shost->host_lock); 1232 vport->fc_flag &= ~FC_NDISC_ACTIVE; 1233 spin_unlock_irq(shost->host_lock); 1234 lpfc_can_disctmo(vport); 1235 } 1236 vport->port_state = LPFC_VPORT_READY; 1237 1238 out: 1239 mempool_free(pmb, phba->mbox_mem_pool); 1240 return; 1241 } 1242 1243 /* 1244 * This routine handles processing a Fabric REG_LOGIN mailbox 1245 * command upon completion. It is setup in the LPFC_MBOXQ 1246 * as the completion routine when the command is 1247 * handed off to the SLI layer. 1248 */ 1249 void 1250 lpfc_mbx_cmpl_fabric_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 1251 { 1252 struct lpfc_vport *vport = pmb->vport; 1253 MAILBOX_t *mb = &pmb->mb; 1254 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1); 1255 struct lpfc_nodelist *ndlp; 1256 struct lpfc_vport **vports; 1257 int i; 1258 1259 ndlp = (struct lpfc_nodelist *) pmb->context2; 1260 pmb->context1 = NULL; 1261 pmb->context2 = NULL; 1262 if (mb->mbxStatus) { 1263 lpfc_mbuf_free(phba, mp->virt, mp->phys); 1264 kfree(mp); 1265 mempool_free(pmb, phba->mbox_mem_pool); 1266 1267 if (phba->fc_topology == TOPOLOGY_LOOP) { 1268 /* FLOGI failed, use loop map to make discovery list */ 1269 lpfc_disc_list_loopmap(vport); 1270 1271 /* Start discovery */ 1272 lpfc_disc_start(vport); 1273 /* Decrement the reference count to ndlp after the 1274 * reference to the ndlp are done. 1275 */ 1276 lpfc_nlp_put(ndlp); 1277 return; 1278 } 1279 1280 lpfc_vport_set_state(vport, FC_VPORT_FAILED); 1281 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX, 1282 "0258 Register Fabric login error: 0x%x\n", 1283 mb->mbxStatus); 1284 /* Decrement the reference count to ndlp after the reference 1285 * to the ndlp are done. 1286 */ 1287 lpfc_nlp_put(ndlp); 1288 return; 1289 } 1290 1291 ndlp->nlp_rpi = mb->un.varWords[0]; 1292 ndlp->nlp_type |= NLP_FABRIC; 1293 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE); 1294 1295 if (vport->port_state == LPFC_FABRIC_CFG_LINK) { 1296 vports = lpfc_create_vport_work_array(phba); 1297 if (vports != NULL) 1298 for(i = 0; 1299 i <= phba->max_vpi && vports[i] != NULL; 1300 i++) { 1301 if (vports[i]->port_type == LPFC_PHYSICAL_PORT) 1302 continue; 1303 if (phba->fc_topology == TOPOLOGY_LOOP) { 1304 lpfc_vport_set_state(vports[i], 1305 FC_VPORT_LINKDOWN); 1306 continue; 1307 } 1308 if (phba->link_flag & LS_NPIV_FAB_SUPPORTED) 1309 lpfc_initial_fdisc(vports[i]); 1310 else { 1311 lpfc_vport_set_state(vports[i], 1312 FC_VPORT_NO_FABRIC_SUPP); 1313 lpfc_printf_vlog(vport, KERN_ERR, 1314 LOG_ELS, 1315 "0259 No NPIV " 1316 "Fabric support\n"); 1317 } 1318 } 1319 lpfc_destroy_vport_work_array(phba, vports); 1320 lpfc_do_scr_ns_plogi(phba, vport); 1321 } 1322 1323 lpfc_mbuf_free(phba, mp->virt, mp->phys); 1324 kfree(mp); 1325 mempool_free(pmb, phba->mbox_mem_pool); 1326 1327 /* Drop the reference count from the mbox at the end after 1328 * all the current reference to the ndlp have been done. 1329 */ 1330 lpfc_nlp_put(ndlp); 1331 return; 1332 } 1333 1334 /* 1335 * This routine handles processing a NameServer REG_LOGIN mailbox 1336 * command upon completion. It is setup in the LPFC_MBOXQ 1337 * as the completion routine when the command is 1338 * handed off to the SLI layer. 1339 */ 1340 void 1341 lpfc_mbx_cmpl_ns_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 1342 { 1343 MAILBOX_t *mb = &pmb->mb; 1344 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1); 1345 struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) pmb->context2; 1346 struct lpfc_vport *vport = pmb->vport; 1347 1348 if (mb->mbxStatus) { 1349 out: 1350 /* decrement the node reference count held for this 1351 * callback function. 1352 */ 1353 lpfc_nlp_put(ndlp); 1354 lpfc_mbuf_free(phba, mp->virt, mp->phys); 1355 kfree(mp); 1356 mempool_free(pmb, phba->mbox_mem_pool); 1357 1358 /* If no other thread is using the ndlp, free it */ 1359 lpfc_nlp_not_used(ndlp); 1360 1361 if (phba->fc_topology == TOPOLOGY_LOOP) { 1362 /* 1363 * RegLogin failed, use loop map to make discovery 1364 * list 1365 */ 1366 lpfc_disc_list_loopmap(vport); 1367 1368 /* Start discovery */ 1369 lpfc_disc_start(vport); 1370 return; 1371 } 1372 lpfc_vport_set_state(vport, FC_VPORT_FAILED); 1373 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS, 1374 "0260 Register NameServer error: 0x%x\n", 1375 mb->mbxStatus); 1376 return; 1377 } 1378 1379 pmb->context1 = NULL; 1380 1381 ndlp->nlp_rpi = mb->un.varWords[0]; 1382 ndlp->nlp_type |= NLP_FABRIC; 1383 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE); 1384 1385 if (vport->port_state < LPFC_VPORT_READY) { 1386 /* Link up discovery requires Fabric registration. */ 1387 lpfc_ns_cmd(vport, SLI_CTNS_RFF_ID, 0, 0); /* Do this first! */ 1388 lpfc_ns_cmd(vport, SLI_CTNS_RNN_ID, 0, 0); 1389 lpfc_ns_cmd(vport, SLI_CTNS_RSNN_NN, 0, 0); 1390 lpfc_ns_cmd(vport, SLI_CTNS_RSPN_ID, 0, 0); 1391 lpfc_ns_cmd(vport, SLI_CTNS_RFT_ID, 0, 0); 1392 1393 /* Issue SCR just before NameServer GID_FT Query */ 1394 lpfc_issue_els_scr(vport, SCR_DID, 0); 1395 } 1396 1397 vport->fc_ns_retry = 0; 1398 /* Good status, issue CT Request to NameServer */ 1399 if (lpfc_ns_cmd(vport, SLI_CTNS_GID_FT, 0, 0)) { 1400 /* Cannot issue NameServer Query, so finish up discovery */ 1401 goto out; 1402 } 1403 1404 /* decrement the node reference count held for this 1405 * callback function. 1406 */ 1407 lpfc_nlp_put(ndlp); 1408 lpfc_mbuf_free(phba, mp->virt, mp->phys); 1409 kfree(mp); 1410 mempool_free(pmb, phba->mbox_mem_pool); 1411 1412 return; 1413 } 1414 1415 static void 1416 lpfc_register_remote_port(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) 1417 { 1418 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 1419 struct fc_rport *rport; 1420 struct lpfc_rport_data *rdata; 1421 struct fc_rport_identifiers rport_ids; 1422 struct lpfc_hba *phba = vport->phba; 1423 1424 /* Remote port has reappeared. Re-register w/ FC transport */ 1425 rport_ids.node_name = wwn_to_u64(ndlp->nlp_nodename.u.wwn); 1426 rport_ids.port_name = wwn_to_u64(ndlp->nlp_portname.u.wwn); 1427 rport_ids.port_id = ndlp->nlp_DID; 1428 rport_ids.roles = FC_RPORT_ROLE_UNKNOWN; 1429 1430 /* 1431 * We leave our node pointer in rport->dd_data when we unregister a 1432 * FCP target port. But fc_remote_port_add zeros the space to which 1433 * rport->dd_data points. So, if we're reusing a previously 1434 * registered port, drop the reference that we took the last time we 1435 * registered the port. 1436 */ 1437 if (ndlp->rport && ndlp->rport->dd_data && 1438 ((struct lpfc_rport_data *) ndlp->rport->dd_data)->pnode == ndlp) 1439 lpfc_nlp_put(ndlp); 1440 1441 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT, 1442 "rport add: did:x%x flg:x%x type x%x", 1443 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type); 1444 1445 ndlp->rport = rport = fc_remote_port_add(shost, 0, &rport_ids); 1446 if (!rport || !get_device(&rport->dev)) { 1447 dev_printk(KERN_WARNING, &phba->pcidev->dev, 1448 "Warning: fc_remote_port_add failed\n"); 1449 return; 1450 } 1451 1452 /* initialize static port data */ 1453 rport->maxframe_size = ndlp->nlp_maxframe; 1454 rport->supported_classes = ndlp->nlp_class_sup; 1455 rdata = rport->dd_data; 1456 rdata->pnode = lpfc_nlp_get(ndlp); 1457 1458 if (ndlp->nlp_type & NLP_FCP_TARGET) 1459 rport_ids.roles |= FC_RPORT_ROLE_FCP_TARGET; 1460 if (ndlp->nlp_type & NLP_FCP_INITIATOR) 1461 rport_ids.roles |= FC_RPORT_ROLE_FCP_INITIATOR; 1462 1463 1464 if (rport_ids.roles != FC_RPORT_ROLE_UNKNOWN) 1465 fc_remote_port_rolechg(rport, rport_ids.roles); 1466 1467 if ((rport->scsi_target_id != -1) && 1468 (rport->scsi_target_id < LPFC_MAX_TARGET)) { 1469 ndlp->nlp_sid = rport->scsi_target_id; 1470 } 1471 return; 1472 } 1473 1474 static void 1475 lpfc_unregister_remote_port(struct lpfc_nodelist *ndlp) 1476 { 1477 struct fc_rport *rport = ndlp->rport; 1478 1479 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_RPORT, 1480 "rport delete: did:x%x flg:x%x type x%x", 1481 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type); 1482 1483 fc_remote_port_delete(rport); 1484 1485 return; 1486 } 1487 1488 static void 1489 lpfc_nlp_counters(struct lpfc_vport *vport, int state, int count) 1490 { 1491 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 1492 1493 spin_lock_irq(shost->host_lock); 1494 switch (state) { 1495 case NLP_STE_UNUSED_NODE: 1496 vport->fc_unused_cnt += count; 1497 break; 1498 case NLP_STE_PLOGI_ISSUE: 1499 vport->fc_plogi_cnt += count; 1500 break; 1501 case NLP_STE_ADISC_ISSUE: 1502 vport->fc_adisc_cnt += count; 1503 break; 1504 case NLP_STE_REG_LOGIN_ISSUE: 1505 vport->fc_reglogin_cnt += count; 1506 break; 1507 case NLP_STE_PRLI_ISSUE: 1508 vport->fc_prli_cnt += count; 1509 break; 1510 case NLP_STE_UNMAPPED_NODE: 1511 vport->fc_unmap_cnt += count; 1512 break; 1513 case NLP_STE_MAPPED_NODE: 1514 vport->fc_map_cnt += count; 1515 break; 1516 case NLP_STE_NPR_NODE: 1517 vport->fc_npr_cnt += count; 1518 break; 1519 } 1520 spin_unlock_irq(shost->host_lock); 1521 } 1522 1523 static void 1524 lpfc_nlp_state_cleanup(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 1525 int old_state, int new_state) 1526 { 1527 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 1528 1529 if (new_state == NLP_STE_UNMAPPED_NODE) { 1530 ndlp->nlp_type &= ~(NLP_FCP_TARGET | NLP_FCP_INITIATOR); 1531 ndlp->nlp_flag &= ~NLP_NODEV_REMOVE; 1532 ndlp->nlp_type |= NLP_FC_NODE; 1533 } 1534 if (new_state == NLP_STE_MAPPED_NODE) 1535 ndlp->nlp_flag &= ~NLP_NODEV_REMOVE; 1536 if (new_state == NLP_STE_NPR_NODE) 1537 ndlp->nlp_flag &= ~NLP_RCV_PLOGI; 1538 1539 /* Transport interface */ 1540 if (ndlp->rport && (old_state == NLP_STE_MAPPED_NODE || 1541 old_state == NLP_STE_UNMAPPED_NODE)) { 1542 vport->phba->nport_event_cnt++; 1543 lpfc_unregister_remote_port(ndlp); 1544 } 1545 1546 if (new_state == NLP_STE_MAPPED_NODE || 1547 new_state == NLP_STE_UNMAPPED_NODE) { 1548 vport->phba->nport_event_cnt++; 1549 /* 1550 * Tell the fc transport about the port, if we haven't 1551 * already. If we have, and it's a scsi entity, be 1552 * sure to unblock any attached scsi devices 1553 */ 1554 lpfc_register_remote_port(vport, ndlp); 1555 } 1556 /* 1557 * if we added to Mapped list, but the remote port 1558 * registration failed or assigned a target id outside 1559 * our presentable range - move the node to the 1560 * Unmapped List 1561 */ 1562 if (new_state == NLP_STE_MAPPED_NODE && 1563 (!ndlp->rport || 1564 ndlp->rport->scsi_target_id == -1 || 1565 ndlp->rport->scsi_target_id >= LPFC_MAX_TARGET)) { 1566 spin_lock_irq(shost->host_lock); 1567 ndlp->nlp_flag |= NLP_TGT_NO_SCSIID; 1568 spin_unlock_irq(shost->host_lock); 1569 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE); 1570 } 1571 } 1572 1573 static char * 1574 lpfc_nlp_state_name(char *buffer, size_t size, int state) 1575 { 1576 static char *states[] = { 1577 [NLP_STE_UNUSED_NODE] = "UNUSED", 1578 [NLP_STE_PLOGI_ISSUE] = "PLOGI", 1579 [NLP_STE_ADISC_ISSUE] = "ADISC", 1580 [NLP_STE_REG_LOGIN_ISSUE] = "REGLOGIN", 1581 [NLP_STE_PRLI_ISSUE] = "PRLI", 1582 [NLP_STE_UNMAPPED_NODE] = "UNMAPPED", 1583 [NLP_STE_MAPPED_NODE] = "MAPPED", 1584 [NLP_STE_NPR_NODE] = "NPR", 1585 }; 1586 1587 if (state < NLP_STE_MAX_STATE && states[state]) 1588 strlcpy(buffer, states[state], size); 1589 else 1590 snprintf(buffer, size, "unknown (%d)", state); 1591 return buffer; 1592 } 1593 1594 void 1595 lpfc_nlp_set_state(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 1596 int state) 1597 { 1598 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 1599 int old_state = ndlp->nlp_state; 1600 char name1[16], name2[16]; 1601 1602 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE, 1603 "0904 NPort state transition x%06x, %s -> %s\n", 1604 ndlp->nlp_DID, 1605 lpfc_nlp_state_name(name1, sizeof(name1), old_state), 1606 lpfc_nlp_state_name(name2, sizeof(name2), state)); 1607 1608 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE, 1609 "node statechg did:x%x old:%d ste:%d", 1610 ndlp->nlp_DID, old_state, state); 1611 1612 if (old_state == NLP_STE_NPR_NODE && 1613 state != NLP_STE_NPR_NODE) 1614 lpfc_cancel_retry_delay_tmo(vport, ndlp); 1615 if (old_state == NLP_STE_UNMAPPED_NODE) { 1616 ndlp->nlp_flag &= ~NLP_TGT_NO_SCSIID; 1617 ndlp->nlp_type &= ~NLP_FC_NODE; 1618 } 1619 1620 if (list_empty(&ndlp->nlp_listp)) { 1621 spin_lock_irq(shost->host_lock); 1622 list_add_tail(&ndlp->nlp_listp, &vport->fc_nodes); 1623 spin_unlock_irq(shost->host_lock); 1624 } else if (old_state) 1625 lpfc_nlp_counters(vport, old_state, -1); 1626 1627 ndlp->nlp_state = state; 1628 lpfc_nlp_counters(vport, state, 1); 1629 lpfc_nlp_state_cleanup(vport, ndlp, old_state, state); 1630 } 1631 1632 void 1633 lpfc_enqueue_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) 1634 { 1635 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 1636 1637 if (list_empty(&ndlp->nlp_listp)) { 1638 spin_lock_irq(shost->host_lock); 1639 list_add_tail(&ndlp->nlp_listp, &vport->fc_nodes); 1640 spin_unlock_irq(shost->host_lock); 1641 } 1642 } 1643 1644 void 1645 lpfc_dequeue_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) 1646 { 1647 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 1648 1649 lpfc_cancel_retry_delay_tmo(vport, ndlp); 1650 if (ndlp->nlp_state && !list_empty(&ndlp->nlp_listp)) 1651 lpfc_nlp_counters(vport, ndlp->nlp_state, -1); 1652 spin_lock_irq(shost->host_lock); 1653 list_del_init(&ndlp->nlp_listp); 1654 spin_unlock_irq(shost->host_lock); 1655 lpfc_nlp_state_cleanup(vport, ndlp, ndlp->nlp_state, 1656 NLP_STE_UNUSED_NODE); 1657 } 1658 1659 static void 1660 lpfc_disable_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) 1661 { 1662 lpfc_cancel_retry_delay_tmo(vport, ndlp); 1663 if (ndlp->nlp_state && !list_empty(&ndlp->nlp_listp)) 1664 lpfc_nlp_counters(vport, ndlp->nlp_state, -1); 1665 lpfc_nlp_state_cleanup(vport, ndlp, ndlp->nlp_state, 1666 NLP_STE_UNUSED_NODE); 1667 } 1668 1669 struct lpfc_nodelist * 1670 lpfc_enable_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 1671 int state) 1672 { 1673 struct lpfc_hba *phba = vport->phba; 1674 uint32_t did; 1675 unsigned long flags; 1676 1677 if (!ndlp) 1678 return NULL; 1679 1680 spin_lock_irqsave(&phba->ndlp_lock, flags); 1681 /* The ndlp should not be in memory free mode */ 1682 if (NLP_CHK_FREE_REQ(ndlp)) { 1683 spin_unlock_irqrestore(&phba->ndlp_lock, flags); 1684 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NODE, 1685 "0277 lpfc_enable_node: ndlp:x%p " 1686 "usgmap:x%x refcnt:%d\n", 1687 (void *)ndlp, ndlp->nlp_usg_map, 1688 atomic_read(&ndlp->kref.refcount)); 1689 return NULL; 1690 } 1691 /* The ndlp should not already be in active mode */ 1692 if (NLP_CHK_NODE_ACT(ndlp)) { 1693 spin_unlock_irqrestore(&phba->ndlp_lock, flags); 1694 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NODE, 1695 "0278 lpfc_enable_node: ndlp:x%p " 1696 "usgmap:x%x refcnt:%d\n", 1697 (void *)ndlp, ndlp->nlp_usg_map, 1698 atomic_read(&ndlp->kref.refcount)); 1699 return NULL; 1700 } 1701 1702 /* Keep the original DID */ 1703 did = ndlp->nlp_DID; 1704 1705 /* re-initialize ndlp except of ndlp linked list pointer */ 1706 memset((((char *)ndlp) + sizeof (struct list_head)), 0, 1707 sizeof (struct lpfc_nodelist) - sizeof (struct list_head)); 1708 INIT_LIST_HEAD(&ndlp->els_retry_evt.evt_listp); 1709 INIT_LIST_HEAD(&ndlp->dev_loss_evt.evt_listp); 1710 init_timer(&ndlp->nlp_delayfunc); 1711 ndlp->nlp_delayfunc.function = lpfc_els_retry_delay; 1712 ndlp->nlp_delayfunc.data = (unsigned long)ndlp; 1713 ndlp->nlp_DID = did; 1714 ndlp->vport = vport; 1715 ndlp->nlp_sid = NLP_NO_SID; 1716 /* ndlp management re-initialize */ 1717 kref_init(&ndlp->kref); 1718 NLP_INT_NODE_ACT(ndlp); 1719 1720 spin_unlock_irqrestore(&phba->ndlp_lock, flags); 1721 1722 if (state != NLP_STE_UNUSED_NODE) 1723 lpfc_nlp_set_state(vport, ndlp, state); 1724 1725 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE, 1726 "node enable: did:x%x", 1727 ndlp->nlp_DID, 0, 0); 1728 return ndlp; 1729 } 1730 1731 void 1732 lpfc_drop_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) 1733 { 1734 /* 1735 * Use of lpfc_drop_node and UNUSED list: lpfc_drop_node should 1736 * be used if we wish to issue the "last" lpfc_nlp_put() to remove 1737 * the ndlp from the vport. The ndlp marked as UNUSED on the list 1738 * until ALL other outstanding threads have completed. We check 1739 * that the ndlp not already in the UNUSED state before we proceed. 1740 */ 1741 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE) 1742 return; 1743 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNUSED_NODE); 1744 lpfc_nlp_put(ndlp); 1745 return; 1746 } 1747 1748 /* 1749 * Start / ReStart rescue timer for Discovery / RSCN handling 1750 */ 1751 void 1752 lpfc_set_disctmo(struct lpfc_vport *vport) 1753 { 1754 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 1755 struct lpfc_hba *phba = vport->phba; 1756 uint32_t tmo; 1757 1758 if (vport->port_state == LPFC_LOCAL_CFG_LINK) { 1759 /* For FAN, timeout should be greater then edtov */ 1760 tmo = (((phba->fc_edtov + 999) / 1000) + 1); 1761 } else { 1762 /* Normal discovery timeout should be > then ELS/CT timeout 1763 * FC spec states we need 3 * ratov for CT requests 1764 */ 1765 tmo = ((phba->fc_ratov * 3) + 3); 1766 } 1767 1768 1769 if (!timer_pending(&vport->fc_disctmo)) { 1770 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, 1771 "set disc timer: tmo:x%x state:x%x flg:x%x", 1772 tmo, vport->port_state, vport->fc_flag); 1773 } 1774 1775 mod_timer(&vport->fc_disctmo, jiffies + HZ * tmo); 1776 spin_lock_irq(shost->host_lock); 1777 vport->fc_flag |= FC_DISC_TMO; 1778 spin_unlock_irq(shost->host_lock); 1779 1780 /* Start Discovery Timer state <hba_state> */ 1781 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, 1782 "0247 Start Discovery Timer state x%x " 1783 "Data: x%x x%lx x%x x%x\n", 1784 vport->port_state, tmo, 1785 (unsigned long)&vport->fc_disctmo, vport->fc_plogi_cnt, 1786 vport->fc_adisc_cnt); 1787 1788 return; 1789 } 1790 1791 /* 1792 * Cancel rescue timer for Discovery / RSCN handling 1793 */ 1794 int 1795 lpfc_can_disctmo(struct lpfc_vport *vport) 1796 { 1797 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 1798 unsigned long iflags; 1799 1800 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, 1801 "can disc timer: state:x%x rtry:x%x flg:x%x", 1802 vport->port_state, vport->fc_ns_retry, vport->fc_flag); 1803 1804 /* Turn off discovery timer if its running */ 1805 if (vport->fc_flag & FC_DISC_TMO) { 1806 spin_lock_irqsave(shost->host_lock, iflags); 1807 vport->fc_flag &= ~FC_DISC_TMO; 1808 spin_unlock_irqrestore(shost->host_lock, iflags); 1809 del_timer_sync(&vport->fc_disctmo); 1810 spin_lock_irqsave(&vport->work_port_lock, iflags); 1811 vport->work_port_events &= ~WORKER_DISC_TMO; 1812 spin_unlock_irqrestore(&vport->work_port_lock, iflags); 1813 } 1814 1815 /* Cancel Discovery Timer state <hba_state> */ 1816 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, 1817 "0248 Cancel Discovery Timer state x%x " 1818 "Data: x%x x%x x%x\n", 1819 vport->port_state, vport->fc_flag, 1820 vport->fc_plogi_cnt, vport->fc_adisc_cnt); 1821 return 0; 1822 } 1823 1824 /* 1825 * Check specified ring for outstanding IOCB on the SLI queue 1826 * Return true if iocb matches the specified nport 1827 */ 1828 int 1829 lpfc_check_sli_ndlp(struct lpfc_hba *phba, 1830 struct lpfc_sli_ring *pring, 1831 struct lpfc_iocbq *iocb, 1832 struct lpfc_nodelist *ndlp) 1833 { 1834 struct lpfc_sli *psli = &phba->sli; 1835 IOCB_t *icmd = &iocb->iocb; 1836 struct lpfc_vport *vport = ndlp->vport; 1837 1838 if (iocb->vport != vport) 1839 return 0; 1840 1841 if (pring->ringno == LPFC_ELS_RING) { 1842 switch (icmd->ulpCommand) { 1843 case CMD_GEN_REQUEST64_CR: 1844 if (icmd->ulpContext == (volatile ushort)ndlp->nlp_rpi) 1845 return 1; 1846 case CMD_ELS_REQUEST64_CR: 1847 if (icmd->un.elsreq64.remoteID == ndlp->nlp_DID) 1848 return 1; 1849 case CMD_XMIT_ELS_RSP64_CX: 1850 if (iocb->context1 == (uint8_t *) ndlp) 1851 return 1; 1852 } 1853 } else if (pring->ringno == psli->extra_ring) { 1854 1855 } else if (pring->ringno == psli->fcp_ring) { 1856 /* Skip match check if waiting to relogin to FCP target */ 1857 if ((ndlp->nlp_type & NLP_FCP_TARGET) && 1858 (ndlp->nlp_flag & NLP_DELAY_TMO)) { 1859 return 0; 1860 } 1861 if (icmd->ulpContext == (volatile ushort)ndlp->nlp_rpi) { 1862 return 1; 1863 } 1864 } else if (pring->ringno == psli->next_ring) { 1865 1866 } 1867 return 0; 1868 } 1869 1870 /* 1871 * Free resources / clean up outstanding I/Os 1872 * associated with nlp_rpi in the LPFC_NODELIST entry. 1873 */ 1874 static int 1875 lpfc_no_rpi(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp) 1876 { 1877 LIST_HEAD(completions); 1878 struct lpfc_sli *psli; 1879 struct lpfc_sli_ring *pring; 1880 struct lpfc_iocbq *iocb, *next_iocb; 1881 IOCB_t *icmd; 1882 uint32_t rpi, i; 1883 1884 lpfc_fabric_abort_nport(ndlp); 1885 1886 /* 1887 * Everything that matches on txcmplq will be returned 1888 * by firmware with a no rpi error. 1889 */ 1890 psli = &phba->sli; 1891 rpi = ndlp->nlp_rpi; 1892 if (rpi) { 1893 /* Now process each ring */ 1894 for (i = 0; i < psli->num_rings; i++) { 1895 pring = &psli->ring[i]; 1896 1897 spin_lock_irq(&phba->hbalock); 1898 list_for_each_entry_safe(iocb, next_iocb, &pring->txq, 1899 list) { 1900 /* 1901 * Check to see if iocb matches the nport we are 1902 * looking for 1903 */ 1904 if ((lpfc_check_sli_ndlp(phba, pring, iocb, 1905 ndlp))) { 1906 /* It matches, so deque and call compl 1907 with an error */ 1908 list_move_tail(&iocb->list, 1909 &completions); 1910 pring->txq_cnt--; 1911 } 1912 } 1913 spin_unlock_irq(&phba->hbalock); 1914 } 1915 } 1916 1917 while (!list_empty(&completions)) { 1918 iocb = list_get_first(&completions, struct lpfc_iocbq, list); 1919 list_del_init(&iocb->list); 1920 1921 if (!iocb->iocb_cmpl) 1922 lpfc_sli_release_iocbq(phba, iocb); 1923 else { 1924 icmd = &iocb->iocb; 1925 icmd->ulpStatus = IOSTAT_LOCAL_REJECT; 1926 icmd->un.ulpWord[4] = IOERR_SLI_ABORTED; 1927 (iocb->iocb_cmpl)(phba, iocb, iocb); 1928 } 1929 } 1930 1931 return 0; 1932 } 1933 1934 /* 1935 * Free rpi associated with LPFC_NODELIST entry. 1936 * This routine is called from lpfc_freenode(), when we are removing 1937 * a LPFC_NODELIST entry. It is also called if the driver initiates a 1938 * LOGO that completes successfully, and we are waiting to PLOGI back 1939 * to the remote NPort. In addition, it is called after we receive 1940 * and unsolicated ELS cmd, send back a rsp, the rsp completes and 1941 * we are waiting to PLOGI back to the remote NPort. 1942 */ 1943 int 1944 lpfc_unreg_rpi(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) 1945 { 1946 struct lpfc_hba *phba = vport->phba; 1947 LPFC_MBOXQ_t *mbox; 1948 int rc; 1949 1950 if (ndlp->nlp_rpi) { 1951 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 1952 if (mbox) { 1953 lpfc_unreg_login(phba, vport->vpi, ndlp->nlp_rpi, mbox); 1954 mbox->vport = vport; 1955 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl; 1956 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT); 1957 if (rc == MBX_NOT_FINISHED) 1958 mempool_free(mbox, phba->mbox_mem_pool); 1959 } 1960 lpfc_no_rpi(phba, ndlp); 1961 ndlp->nlp_rpi = 0; 1962 return 1; 1963 } 1964 return 0; 1965 } 1966 1967 void 1968 lpfc_unreg_all_rpis(struct lpfc_vport *vport) 1969 { 1970 struct lpfc_hba *phba = vport->phba; 1971 LPFC_MBOXQ_t *mbox; 1972 int rc; 1973 1974 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 1975 if (mbox) { 1976 lpfc_unreg_login(phba, vport->vpi, 0xffff, mbox); 1977 mbox->vport = vport; 1978 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl; 1979 mbox->context1 = NULL; 1980 rc = lpfc_sli_issue_mbox_wait(phba, mbox, LPFC_MBOX_TMO); 1981 if (rc == MBX_NOT_FINISHED) { 1982 mempool_free(mbox, phba->mbox_mem_pool); 1983 } 1984 } 1985 } 1986 1987 void 1988 lpfc_unreg_default_rpis(struct lpfc_vport *vport) 1989 { 1990 struct lpfc_hba *phba = vport->phba; 1991 LPFC_MBOXQ_t *mbox; 1992 int rc; 1993 1994 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 1995 if (mbox) { 1996 lpfc_unreg_did(phba, vport->vpi, 0xffffffff, mbox); 1997 mbox->vport = vport; 1998 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl; 1999 mbox->context1 = NULL; 2000 rc = lpfc_sli_issue_mbox_wait(phba, mbox, LPFC_MBOX_TMO); 2001 if (rc == MBX_NOT_FINISHED) { 2002 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX | LOG_VPORT, 2003 "1815 Could not issue " 2004 "unreg_did (default rpis)\n"); 2005 mempool_free(mbox, phba->mbox_mem_pool); 2006 } 2007 } 2008 } 2009 2010 /* 2011 * Free resources associated with LPFC_NODELIST entry 2012 * so it can be freed. 2013 */ 2014 static int 2015 lpfc_cleanup_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) 2016 { 2017 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 2018 struct lpfc_hba *phba = vport->phba; 2019 LPFC_MBOXQ_t *mb, *nextmb; 2020 struct lpfc_dmabuf *mp; 2021 2022 /* Cleanup node for NPort <nlp_DID> */ 2023 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE, 2024 "0900 Cleanup node for NPort x%x " 2025 "Data: x%x x%x x%x\n", 2026 ndlp->nlp_DID, ndlp->nlp_flag, 2027 ndlp->nlp_state, ndlp->nlp_rpi); 2028 if (NLP_CHK_FREE_REQ(ndlp)) { 2029 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NODE, 2030 "0280 lpfc_cleanup_node: ndlp:x%p " 2031 "usgmap:x%x refcnt:%d\n", 2032 (void *)ndlp, ndlp->nlp_usg_map, 2033 atomic_read(&ndlp->kref.refcount)); 2034 lpfc_dequeue_node(vport, ndlp); 2035 } else { 2036 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NODE, 2037 "0281 lpfc_cleanup_node: ndlp:x%p " 2038 "usgmap:x%x refcnt:%d\n", 2039 (void *)ndlp, ndlp->nlp_usg_map, 2040 atomic_read(&ndlp->kref.refcount)); 2041 lpfc_disable_node(vport, ndlp); 2042 } 2043 2044 /* cleanup any ndlp on mbox q waiting for reglogin cmpl */ 2045 if ((mb = phba->sli.mbox_active)) { 2046 if ((mb->mb.mbxCommand == MBX_REG_LOGIN64) && 2047 (ndlp == (struct lpfc_nodelist *) mb->context2)) { 2048 mb->context2 = NULL; 2049 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl; 2050 } 2051 } 2052 2053 spin_lock_irq(&phba->hbalock); 2054 list_for_each_entry_safe(mb, nextmb, &phba->sli.mboxq, list) { 2055 if ((mb->mb.mbxCommand == MBX_REG_LOGIN64) && 2056 (ndlp == (struct lpfc_nodelist *) mb->context2)) { 2057 mp = (struct lpfc_dmabuf *) (mb->context1); 2058 if (mp) { 2059 __lpfc_mbuf_free(phba, mp->virt, mp->phys); 2060 kfree(mp); 2061 } 2062 list_del(&mb->list); 2063 mempool_free(mb, phba->mbox_mem_pool); 2064 /* We shall not invoke the lpfc_nlp_put to decrement 2065 * the ndlp reference count as we are in the process 2066 * of lpfc_nlp_release. 2067 */ 2068 } 2069 } 2070 spin_unlock_irq(&phba->hbalock); 2071 2072 lpfc_els_abort(phba, ndlp); 2073 2074 spin_lock_irq(shost->host_lock); 2075 ndlp->nlp_flag &= ~NLP_DELAY_TMO; 2076 spin_unlock_irq(shost->host_lock); 2077 2078 ndlp->nlp_last_elscmd = 0; 2079 del_timer_sync(&ndlp->nlp_delayfunc); 2080 2081 list_del_init(&ndlp->els_retry_evt.evt_listp); 2082 list_del_init(&ndlp->dev_loss_evt.evt_listp); 2083 2084 lpfc_unreg_rpi(vport, ndlp); 2085 2086 return 0; 2087 } 2088 2089 /* 2090 * Check to see if we can free the nlp back to the freelist. 2091 * If we are in the middle of using the nlp in the discovery state 2092 * machine, defer the free till we reach the end of the state machine. 2093 */ 2094 static void 2095 lpfc_nlp_remove(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) 2096 { 2097 struct lpfc_hba *phba = vport->phba; 2098 struct lpfc_rport_data *rdata; 2099 LPFC_MBOXQ_t *mbox; 2100 int rc; 2101 2102 lpfc_cancel_retry_delay_tmo(vport, ndlp); 2103 if (ndlp->nlp_flag & NLP_DEFER_RM && !ndlp->nlp_rpi) { 2104 /* For this case we need to cleanup the default rpi 2105 * allocated by the firmware. 2106 */ 2107 if ((mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL)) 2108 != NULL) { 2109 rc = lpfc_reg_login(phba, vport->vpi, ndlp->nlp_DID, 2110 (uint8_t *) &vport->fc_sparam, mbox, 0); 2111 if (rc) { 2112 mempool_free(mbox, phba->mbox_mem_pool); 2113 } 2114 else { 2115 mbox->mbox_flag |= LPFC_MBX_IMED_UNREG; 2116 mbox->mbox_cmpl = lpfc_mbx_cmpl_dflt_rpi; 2117 mbox->vport = vport; 2118 mbox->context2 = NULL; 2119 rc =lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT); 2120 if (rc == MBX_NOT_FINISHED) { 2121 mempool_free(mbox, phba->mbox_mem_pool); 2122 } 2123 } 2124 } 2125 } 2126 lpfc_cleanup_node(vport, ndlp); 2127 2128 /* 2129 * We can get here with a non-NULL ndlp->rport because when we 2130 * unregister a rport we don't break the rport/node linkage. So if we 2131 * do, make sure we don't leaving any dangling pointers behind. 2132 */ 2133 if (ndlp->rport) { 2134 rdata = ndlp->rport->dd_data; 2135 rdata->pnode = NULL; 2136 ndlp->rport = NULL; 2137 } 2138 } 2139 2140 static int 2141 lpfc_matchdid(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 2142 uint32_t did) 2143 { 2144 D_ID mydid, ndlpdid, matchdid; 2145 2146 if (did == Bcast_DID) 2147 return 0; 2148 2149 /* First check for Direct match */ 2150 if (ndlp->nlp_DID == did) 2151 return 1; 2152 2153 /* Next check for area/domain identically equals 0 match */ 2154 mydid.un.word = vport->fc_myDID; 2155 if ((mydid.un.b.domain == 0) && (mydid.un.b.area == 0)) { 2156 return 0; 2157 } 2158 2159 matchdid.un.word = did; 2160 ndlpdid.un.word = ndlp->nlp_DID; 2161 if (matchdid.un.b.id == ndlpdid.un.b.id) { 2162 if ((mydid.un.b.domain == matchdid.un.b.domain) && 2163 (mydid.un.b.area == matchdid.un.b.area)) { 2164 if ((ndlpdid.un.b.domain == 0) && 2165 (ndlpdid.un.b.area == 0)) { 2166 if (ndlpdid.un.b.id) 2167 return 1; 2168 } 2169 return 0; 2170 } 2171 2172 matchdid.un.word = ndlp->nlp_DID; 2173 if ((mydid.un.b.domain == ndlpdid.un.b.domain) && 2174 (mydid.un.b.area == ndlpdid.un.b.area)) { 2175 if ((matchdid.un.b.domain == 0) && 2176 (matchdid.un.b.area == 0)) { 2177 if (matchdid.un.b.id) 2178 return 1; 2179 } 2180 } 2181 } 2182 return 0; 2183 } 2184 2185 /* Search for a nodelist entry */ 2186 static struct lpfc_nodelist * 2187 __lpfc_findnode_did(struct lpfc_vport *vport, uint32_t did) 2188 { 2189 struct lpfc_nodelist *ndlp; 2190 uint32_t data1; 2191 2192 list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) { 2193 if (lpfc_matchdid(vport, ndlp, did)) { 2194 data1 = (((uint32_t) ndlp->nlp_state << 24) | 2195 ((uint32_t) ndlp->nlp_xri << 16) | 2196 ((uint32_t) ndlp->nlp_type << 8) | 2197 ((uint32_t) ndlp->nlp_rpi & 0xff)); 2198 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE, 2199 "0929 FIND node DID " 2200 "Data: x%p x%x x%x x%x\n", 2201 ndlp, ndlp->nlp_DID, 2202 ndlp->nlp_flag, data1); 2203 return ndlp; 2204 } 2205 } 2206 2207 /* FIND node did <did> NOT FOUND */ 2208 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE, 2209 "0932 FIND node did x%x NOT FOUND.\n", did); 2210 return NULL; 2211 } 2212 2213 struct lpfc_nodelist * 2214 lpfc_findnode_did(struct lpfc_vport *vport, uint32_t did) 2215 { 2216 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 2217 struct lpfc_nodelist *ndlp; 2218 2219 spin_lock_irq(shost->host_lock); 2220 ndlp = __lpfc_findnode_did(vport, did); 2221 spin_unlock_irq(shost->host_lock); 2222 return ndlp; 2223 } 2224 2225 struct lpfc_nodelist * 2226 lpfc_setup_disc_node(struct lpfc_vport *vport, uint32_t did) 2227 { 2228 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 2229 struct lpfc_nodelist *ndlp; 2230 2231 ndlp = lpfc_findnode_did(vport, did); 2232 if (!ndlp) { 2233 if ((vport->fc_flag & FC_RSCN_MODE) != 0 && 2234 lpfc_rscn_payload_check(vport, did) == 0) 2235 return NULL; 2236 ndlp = (struct lpfc_nodelist *) 2237 mempool_alloc(vport->phba->nlp_mem_pool, GFP_KERNEL); 2238 if (!ndlp) 2239 return NULL; 2240 lpfc_nlp_init(vport, ndlp, did); 2241 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE); 2242 spin_lock_irq(shost->host_lock); 2243 ndlp->nlp_flag |= NLP_NPR_2B_DISC; 2244 spin_unlock_irq(shost->host_lock); 2245 return ndlp; 2246 } else if (!NLP_CHK_NODE_ACT(ndlp)) { 2247 ndlp = lpfc_enable_node(vport, ndlp, NLP_STE_NPR_NODE); 2248 if (!ndlp) 2249 return NULL; 2250 spin_lock_irq(shost->host_lock); 2251 ndlp->nlp_flag |= NLP_NPR_2B_DISC; 2252 spin_unlock_irq(shost->host_lock); 2253 return ndlp; 2254 } 2255 2256 if ((vport->fc_flag & FC_RSCN_MODE) && 2257 !(vport->fc_flag & FC_NDISC_ACTIVE)) { 2258 if (lpfc_rscn_payload_check(vport, did)) { 2259 /* If we've already recieved a PLOGI from this NPort 2260 * we don't need to try to discover it again. 2261 */ 2262 if (ndlp->nlp_flag & NLP_RCV_PLOGI) 2263 return NULL; 2264 2265 spin_lock_irq(shost->host_lock); 2266 ndlp->nlp_flag |= NLP_NPR_2B_DISC; 2267 spin_unlock_irq(shost->host_lock); 2268 2269 /* Since this node is marked for discovery, 2270 * delay timeout is not needed. 2271 */ 2272 lpfc_cancel_retry_delay_tmo(vport, ndlp); 2273 } else 2274 ndlp = NULL; 2275 } else { 2276 /* If we've already recieved a PLOGI from this NPort, 2277 * or we are already in the process of discovery on it, 2278 * we don't need to try to discover it again. 2279 */ 2280 if (ndlp->nlp_state == NLP_STE_ADISC_ISSUE || 2281 ndlp->nlp_state == NLP_STE_PLOGI_ISSUE || 2282 ndlp->nlp_flag & NLP_RCV_PLOGI) 2283 return NULL; 2284 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE); 2285 spin_lock_irq(shost->host_lock); 2286 ndlp->nlp_flag |= NLP_NPR_2B_DISC; 2287 spin_unlock_irq(shost->host_lock); 2288 } 2289 return ndlp; 2290 } 2291 2292 /* Build a list of nodes to discover based on the loopmap */ 2293 void 2294 lpfc_disc_list_loopmap(struct lpfc_vport *vport) 2295 { 2296 struct lpfc_hba *phba = vport->phba; 2297 int j; 2298 uint32_t alpa, index; 2299 2300 if (!lpfc_is_link_up(phba)) 2301 return; 2302 2303 if (phba->fc_topology != TOPOLOGY_LOOP) 2304 return; 2305 2306 /* Check for loop map present or not */ 2307 if (phba->alpa_map[0]) { 2308 for (j = 1; j <= phba->alpa_map[0]; j++) { 2309 alpa = phba->alpa_map[j]; 2310 if (((vport->fc_myDID & 0xff) == alpa) || (alpa == 0)) 2311 continue; 2312 lpfc_setup_disc_node(vport, alpa); 2313 } 2314 } else { 2315 /* No alpamap, so try all alpa's */ 2316 for (j = 0; j < FC_MAXLOOP; j++) { 2317 /* If cfg_scan_down is set, start from highest 2318 * ALPA (0xef) to lowest (0x1). 2319 */ 2320 if (vport->cfg_scan_down) 2321 index = j; 2322 else 2323 index = FC_MAXLOOP - j - 1; 2324 alpa = lpfcAlpaArray[index]; 2325 if ((vport->fc_myDID & 0xff) == alpa) 2326 continue; 2327 lpfc_setup_disc_node(vport, alpa); 2328 } 2329 } 2330 return; 2331 } 2332 2333 void 2334 lpfc_issue_clear_la(struct lpfc_hba *phba, struct lpfc_vport *vport) 2335 { 2336 LPFC_MBOXQ_t *mbox; 2337 struct lpfc_sli *psli = &phba->sli; 2338 struct lpfc_sli_ring *extra_ring = &psli->ring[psli->extra_ring]; 2339 struct lpfc_sli_ring *fcp_ring = &psli->ring[psli->fcp_ring]; 2340 struct lpfc_sli_ring *next_ring = &psli->ring[psli->next_ring]; 2341 int rc; 2342 2343 /* 2344 * if it's not a physical port or if we already send 2345 * clear_la then don't send it. 2346 */ 2347 if ((phba->link_state >= LPFC_CLEAR_LA) || 2348 (vport->port_type != LPFC_PHYSICAL_PORT)) 2349 return; 2350 2351 /* Link up discovery */ 2352 if ((mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL)) != NULL) { 2353 phba->link_state = LPFC_CLEAR_LA; 2354 lpfc_clear_la(phba, mbox); 2355 mbox->mbox_cmpl = lpfc_mbx_cmpl_clear_la; 2356 mbox->vport = vport; 2357 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT); 2358 if (rc == MBX_NOT_FINISHED) { 2359 mempool_free(mbox, phba->mbox_mem_pool); 2360 lpfc_disc_flush_list(vport); 2361 extra_ring->flag &= ~LPFC_STOP_IOCB_EVENT; 2362 fcp_ring->flag &= ~LPFC_STOP_IOCB_EVENT; 2363 next_ring->flag &= ~LPFC_STOP_IOCB_EVENT; 2364 phba->link_state = LPFC_HBA_ERROR; 2365 } 2366 } 2367 } 2368 2369 /* Reg_vpi to tell firmware to resume normal operations */ 2370 void 2371 lpfc_issue_reg_vpi(struct lpfc_hba *phba, struct lpfc_vport *vport) 2372 { 2373 LPFC_MBOXQ_t *regvpimbox; 2374 2375 regvpimbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 2376 if (regvpimbox) { 2377 lpfc_reg_vpi(phba, vport->vpi, vport->fc_myDID, regvpimbox); 2378 regvpimbox->mbox_cmpl = lpfc_mbx_cmpl_reg_vpi; 2379 regvpimbox->vport = vport; 2380 if (lpfc_sli_issue_mbox(phba, regvpimbox, MBX_NOWAIT) 2381 == MBX_NOT_FINISHED) { 2382 mempool_free(regvpimbox, phba->mbox_mem_pool); 2383 } 2384 } 2385 } 2386 2387 /* Start Link up / RSCN discovery on NPR nodes */ 2388 void 2389 lpfc_disc_start(struct lpfc_vport *vport) 2390 { 2391 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 2392 struct lpfc_hba *phba = vport->phba; 2393 uint32_t num_sent; 2394 uint32_t clear_la_pending; 2395 int did_changed; 2396 2397 if (!lpfc_is_link_up(phba)) 2398 return; 2399 2400 if (phba->link_state == LPFC_CLEAR_LA) 2401 clear_la_pending = 1; 2402 else 2403 clear_la_pending = 0; 2404 2405 if (vport->port_state < LPFC_VPORT_READY) 2406 vport->port_state = LPFC_DISC_AUTH; 2407 2408 lpfc_set_disctmo(vport); 2409 2410 if (vport->fc_prevDID == vport->fc_myDID) 2411 did_changed = 0; 2412 else 2413 did_changed = 1; 2414 2415 vport->fc_prevDID = vport->fc_myDID; 2416 vport->num_disc_nodes = 0; 2417 2418 /* Start Discovery state <hba_state> */ 2419 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, 2420 "0202 Start Discovery hba state x%x " 2421 "Data: x%x x%x x%x\n", 2422 vport->port_state, vport->fc_flag, vport->fc_plogi_cnt, 2423 vport->fc_adisc_cnt); 2424 2425 /* First do ADISCs - if any */ 2426 num_sent = lpfc_els_disc_adisc(vport); 2427 2428 if (num_sent) 2429 return; 2430 2431 /* 2432 * For SLI3, cmpl_reg_vpi will set port_state to READY, and 2433 * continue discovery. 2434 */ 2435 if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) && 2436 !(vport->fc_flag & FC_PT2PT) && 2437 !(vport->fc_flag & FC_RSCN_MODE)) { 2438 lpfc_issue_reg_vpi(phba, vport); 2439 return; 2440 } 2441 2442 /* 2443 * For SLI2, we need to set port_state to READY and continue 2444 * discovery. 2445 */ 2446 if (vport->port_state < LPFC_VPORT_READY && !clear_la_pending) { 2447 /* If we get here, there is nothing to ADISC */ 2448 if (vport->port_type == LPFC_PHYSICAL_PORT) 2449 lpfc_issue_clear_la(phba, vport); 2450 2451 if (!(vport->fc_flag & FC_ABORT_DISCOVERY)) { 2452 vport->num_disc_nodes = 0; 2453 /* go thru NPR nodes and issue ELS PLOGIs */ 2454 if (vport->fc_npr_cnt) 2455 lpfc_els_disc_plogi(vport); 2456 2457 if (!vport->num_disc_nodes) { 2458 spin_lock_irq(shost->host_lock); 2459 vport->fc_flag &= ~FC_NDISC_ACTIVE; 2460 spin_unlock_irq(shost->host_lock); 2461 lpfc_can_disctmo(vport); 2462 } 2463 } 2464 vport->port_state = LPFC_VPORT_READY; 2465 } else { 2466 /* Next do PLOGIs - if any */ 2467 num_sent = lpfc_els_disc_plogi(vport); 2468 2469 if (num_sent) 2470 return; 2471 2472 if (vport->fc_flag & FC_RSCN_MODE) { 2473 /* Check to see if more RSCNs came in while we 2474 * were processing this one. 2475 */ 2476 if ((vport->fc_rscn_id_cnt == 0) && 2477 (!(vport->fc_flag & FC_RSCN_DISCOVERY))) { 2478 spin_lock_irq(shost->host_lock); 2479 vport->fc_flag &= ~FC_RSCN_MODE; 2480 spin_unlock_irq(shost->host_lock); 2481 lpfc_can_disctmo(vport); 2482 } else 2483 lpfc_els_handle_rscn(vport); 2484 } 2485 } 2486 return; 2487 } 2488 2489 /* 2490 * Ignore completion for all IOCBs on tx and txcmpl queue for ELS 2491 * ring the match the sppecified nodelist. 2492 */ 2493 static void 2494 lpfc_free_tx(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp) 2495 { 2496 LIST_HEAD(completions); 2497 struct lpfc_sli *psli; 2498 IOCB_t *icmd; 2499 struct lpfc_iocbq *iocb, *next_iocb; 2500 struct lpfc_sli_ring *pring; 2501 2502 psli = &phba->sli; 2503 pring = &psli->ring[LPFC_ELS_RING]; 2504 2505 /* Error matching iocb on txq or txcmplq 2506 * First check the txq. 2507 */ 2508 spin_lock_irq(&phba->hbalock); 2509 list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) { 2510 if (iocb->context1 != ndlp) { 2511 continue; 2512 } 2513 icmd = &iocb->iocb; 2514 if ((icmd->ulpCommand == CMD_ELS_REQUEST64_CR) || 2515 (icmd->ulpCommand == CMD_XMIT_ELS_RSP64_CX)) { 2516 2517 list_move_tail(&iocb->list, &completions); 2518 pring->txq_cnt--; 2519 } 2520 } 2521 2522 /* Next check the txcmplq */ 2523 list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq, list) { 2524 if (iocb->context1 != ndlp) { 2525 continue; 2526 } 2527 icmd = &iocb->iocb; 2528 if (icmd->ulpCommand == CMD_ELS_REQUEST64_CR || 2529 icmd->ulpCommand == CMD_XMIT_ELS_RSP64_CX) { 2530 lpfc_sli_issue_abort_iotag(phba, pring, iocb); 2531 } 2532 } 2533 spin_unlock_irq(&phba->hbalock); 2534 2535 while (!list_empty(&completions)) { 2536 iocb = list_get_first(&completions, struct lpfc_iocbq, list); 2537 list_del_init(&iocb->list); 2538 2539 if (!iocb->iocb_cmpl) 2540 lpfc_sli_release_iocbq(phba, iocb); 2541 else { 2542 icmd = &iocb->iocb; 2543 icmd->ulpStatus = IOSTAT_LOCAL_REJECT; 2544 icmd->un.ulpWord[4] = IOERR_SLI_ABORTED; 2545 (iocb->iocb_cmpl) (phba, iocb, iocb); 2546 } 2547 } 2548 } 2549 2550 static void 2551 lpfc_disc_flush_list(struct lpfc_vport *vport) 2552 { 2553 struct lpfc_nodelist *ndlp, *next_ndlp; 2554 struct lpfc_hba *phba = vport->phba; 2555 2556 if (vport->fc_plogi_cnt || vport->fc_adisc_cnt) { 2557 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, 2558 nlp_listp) { 2559 if (!NLP_CHK_NODE_ACT(ndlp)) 2560 continue; 2561 if (ndlp->nlp_state == NLP_STE_PLOGI_ISSUE || 2562 ndlp->nlp_state == NLP_STE_ADISC_ISSUE) { 2563 lpfc_free_tx(phba, ndlp); 2564 } 2565 } 2566 } 2567 } 2568 2569 void 2570 lpfc_cleanup_discovery_resources(struct lpfc_vport *vport) 2571 { 2572 lpfc_els_flush_rscn(vport); 2573 lpfc_els_flush_cmd(vport); 2574 lpfc_disc_flush_list(vport); 2575 } 2576 2577 /*****************************************************************************/ 2578 /* 2579 * NAME: lpfc_disc_timeout 2580 * 2581 * FUNCTION: Fibre Channel driver discovery timeout routine. 2582 * 2583 * EXECUTION ENVIRONMENT: interrupt only 2584 * 2585 * CALLED FROM: 2586 * Timer function 2587 * 2588 * RETURNS: 2589 * none 2590 */ 2591 /*****************************************************************************/ 2592 void 2593 lpfc_disc_timeout(unsigned long ptr) 2594 { 2595 struct lpfc_vport *vport = (struct lpfc_vport *) ptr; 2596 struct lpfc_hba *phba = vport->phba; 2597 uint32_t tmo_posted; 2598 unsigned long flags = 0; 2599 2600 if (unlikely(!phba)) 2601 return; 2602 2603 spin_lock_irqsave(&vport->work_port_lock, flags); 2604 tmo_posted = vport->work_port_events & WORKER_DISC_TMO; 2605 if (!tmo_posted) 2606 vport->work_port_events |= WORKER_DISC_TMO; 2607 spin_unlock_irqrestore(&vport->work_port_lock, flags); 2608 2609 if (!tmo_posted) 2610 lpfc_worker_wake_up(phba); 2611 return; 2612 } 2613 2614 static void 2615 lpfc_disc_timeout_handler(struct lpfc_vport *vport) 2616 { 2617 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 2618 struct lpfc_hba *phba = vport->phba; 2619 struct lpfc_sli *psli = &phba->sli; 2620 struct lpfc_nodelist *ndlp, *next_ndlp; 2621 LPFC_MBOXQ_t *initlinkmbox; 2622 int rc, clrlaerr = 0; 2623 2624 if (!(vport->fc_flag & FC_DISC_TMO)) 2625 return; 2626 2627 spin_lock_irq(shost->host_lock); 2628 vport->fc_flag &= ~FC_DISC_TMO; 2629 spin_unlock_irq(shost->host_lock); 2630 2631 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, 2632 "disc timeout: state:x%x rtry:x%x flg:x%x", 2633 vport->port_state, vport->fc_ns_retry, vport->fc_flag); 2634 2635 switch (vport->port_state) { 2636 2637 case LPFC_LOCAL_CFG_LINK: 2638 /* port_state is identically LPFC_LOCAL_CFG_LINK while waiting for 2639 * FAN 2640 */ 2641 /* FAN timeout */ 2642 lpfc_printf_vlog(vport, KERN_WARNING, LOG_DISCOVERY, 2643 "0221 FAN timeout\n"); 2644 /* Start discovery by sending FLOGI, clean up old rpis */ 2645 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, 2646 nlp_listp) { 2647 if (!NLP_CHK_NODE_ACT(ndlp)) 2648 continue; 2649 if (ndlp->nlp_state != NLP_STE_NPR_NODE) 2650 continue; 2651 if (ndlp->nlp_type & NLP_FABRIC) { 2652 /* Clean up the ndlp on Fabric connections */ 2653 lpfc_drop_node(vport, ndlp); 2654 2655 } else if (!(ndlp->nlp_flag & NLP_NPR_ADISC)) { 2656 /* Fail outstanding IO now since device 2657 * is marked for PLOGI. 2658 */ 2659 lpfc_unreg_rpi(vport, ndlp); 2660 } 2661 } 2662 if (vport->port_state != LPFC_FLOGI) { 2663 lpfc_initial_flogi(vport); 2664 return; 2665 } 2666 break; 2667 2668 case LPFC_FDISC: 2669 case LPFC_FLOGI: 2670 /* port_state is identically LPFC_FLOGI while waiting for FLOGI cmpl */ 2671 /* Initial FLOGI timeout */ 2672 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY, 2673 "0222 Initial %s timeout\n", 2674 vport->vpi ? "FDISC" : "FLOGI"); 2675 2676 /* Assume no Fabric and go on with discovery. 2677 * Check for outstanding ELS FLOGI to abort. 2678 */ 2679 2680 /* FLOGI failed, so just use loop map to make discovery list */ 2681 lpfc_disc_list_loopmap(vport); 2682 2683 /* Start discovery */ 2684 lpfc_disc_start(vport); 2685 break; 2686 2687 case LPFC_FABRIC_CFG_LINK: 2688 /* hba_state is identically LPFC_FABRIC_CFG_LINK while waiting for 2689 NameServer login */ 2690 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY, 2691 "0223 Timeout while waiting for " 2692 "NameServer login\n"); 2693 /* Next look for NameServer ndlp */ 2694 ndlp = lpfc_findnode_did(vport, NameServer_DID); 2695 if (ndlp && NLP_CHK_NODE_ACT(ndlp)) 2696 lpfc_els_abort(phba, ndlp); 2697 2698 /* ReStart discovery */ 2699 goto restart_disc; 2700 2701 case LPFC_NS_QRY: 2702 /* Check for wait for NameServer Rsp timeout */ 2703 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY, 2704 "0224 NameServer Query timeout " 2705 "Data: x%x x%x\n", 2706 vport->fc_ns_retry, LPFC_MAX_NS_RETRY); 2707 2708 if (vport->fc_ns_retry < LPFC_MAX_NS_RETRY) { 2709 /* Try it one more time */ 2710 vport->fc_ns_retry++; 2711 rc = lpfc_ns_cmd(vport, SLI_CTNS_GID_FT, 2712 vport->fc_ns_retry, 0); 2713 if (rc == 0) 2714 break; 2715 } 2716 vport->fc_ns_retry = 0; 2717 2718 restart_disc: 2719 /* 2720 * Discovery is over. 2721 * set port_state to PORT_READY if SLI2. 2722 * cmpl_reg_vpi will set port_state to READY for SLI3. 2723 */ 2724 if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) 2725 lpfc_issue_reg_vpi(phba, vport); 2726 else { /* NPIV Not enabled */ 2727 lpfc_issue_clear_la(phba, vport); 2728 vport->port_state = LPFC_VPORT_READY; 2729 } 2730 2731 /* Setup and issue mailbox INITIALIZE LINK command */ 2732 initlinkmbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 2733 if (!initlinkmbox) { 2734 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY, 2735 "0206 Device Discovery " 2736 "completion error\n"); 2737 phba->link_state = LPFC_HBA_ERROR; 2738 break; 2739 } 2740 2741 lpfc_linkdown(phba); 2742 lpfc_init_link(phba, initlinkmbox, phba->cfg_topology, 2743 phba->cfg_link_speed); 2744 initlinkmbox->mb.un.varInitLnk.lipsr_AL_PA = 0; 2745 initlinkmbox->vport = vport; 2746 initlinkmbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl; 2747 rc = lpfc_sli_issue_mbox(phba, initlinkmbox, MBX_NOWAIT); 2748 lpfc_set_loopback_flag(phba); 2749 if (rc == MBX_NOT_FINISHED) 2750 mempool_free(initlinkmbox, phba->mbox_mem_pool); 2751 2752 break; 2753 2754 case LPFC_DISC_AUTH: 2755 /* Node Authentication timeout */ 2756 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY, 2757 "0227 Node Authentication timeout\n"); 2758 lpfc_disc_flush_list(vport); 2759 2760 /* 2761 * set port_state to PORT_READY if SLI2. 2762 * cmpl_reg_vpi will set port_state to READY for SLI3. 2763 */ 2764 if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) 2765 lpfc_issue_reg_vpi(phba, vport); 2766 else { /* NPIV Not enabled */ 2767 lpfc_issue_clear_la(phba, vport); 2768 vport->port_state = LPFC_VPORT_READY; 2769 } 2770 break; 2771 2772 case LPFC_VPORT_READY: 2773 if (vport->fc_flag & FC_RSCN_MODE) { 2774 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY, 2775 "0231 RSCN timeout Data: x%x " 2776 "x%x\n", 2777 vport->fc_ns_retry, LPFC_MAX_NS_RETRY); 2778 2779 /* Cleanup any outstanding ELS commands */ 2780 lpfc_els_flush_cmd(vport); 2781 2782 lpfc_els_flush_rscn(vport); 2783 lpfc_disc_flush_list(vport); 2784 } 2785 break; 2786 2787 default: 2788 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY, 2789 "0229 Unexpected discovery timeout, " 2790 "vport State x%x\n", vport->port_state); 2791 break; 2792 } 2793 2794 switch (phba->link_state) { 2795 case LPFC_CLEAR_LA: 2796 /* CLEAR LA timeout */ 2797 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY, 2798 "0228 CLEAR LA timeout\n"); 2799 clrlaerr = 1; 2800 break; 2801 2802 case LPFC_LINK_UP: 2803 lpfc_issue_clear_la(phba, vport); 2804 /* Drop thru */ 2805 case LPFC_LINK_UNKNOWN: 2806 case LPFC_WARM_START: 2807 case LPFC_INIT_START: 2808 case LPFC_INIT_MBX_CMDS: 2809 case LPFC_LINK_DOWN: 2810 case LPFC_HBA_ERROR: 2811 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY, 2812 "0230 Unexpected timeout, hba link " 2813 "state x%x\n", phba->link_state); 2814 clrlaerr = 1; 2815 break; 2816 2817 case LPFC_HBA_READY: 2818 break; 2819 } 2820 2821 if (clrlaerr) { 2822 lpfc_disc_flush_list(vport); 2823 psli->ring[(psli->extra_ring)].flag &= ~LPFC_STOP_IOCB_EVENT; 2824 psli->ring[(psli->fcp_ring)].flag &= ~LPFC_STOP_IOCB_EVENT; 2825 psli->ring[(psli->next_ring)].flag &= ~LPFC_STOP_IOCB_EVENT; 2826 vport->port_state = LPFC_VPORT_READY; 2827 } 2828 2829 return; 2830 } 2831 2832 /* 2833 * This routine handles processing a NameServer REG_LOGIN mailbox 2834 * command upon completion. It is setup in the LPFC_MBOXQ 2835 * as the completion routine when the command is 2836 * handed off to the SLI layer. 2837 */ 2838 void 2839 lpfc_mbx_cmpl_fdmi_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 2840 { 2841 MAILBOX_t *mb = &pmb->mb; 2842 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1); 2843 struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) pmb->context2; 2844 struct lpfc_vport *vport = pmb->vport; 2845 2846 pmb->context1 = NULL; 2847 2848 ndlp->nlp_rpi = mb->un.varWords[0]; 2849 ndlp->nlp_type |= NLP_FABRIC; 2850 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE); 2851 2852 /* 2853 * Start issuing Fabric-Device Management Interface (FDMI) command to 2854 * 0xfffffa (FDMI well known port) or Delay issuing FDMI command if 2855 * fdmi-on=2 (supporting RPA/hostnmae) 2856 */ 2857 2858 if (vport->cfg_fdmi_on == 1) 2859 lpfc_fdmi_cmd(vport, ndlp, SLI_MGMT_DHBA); 2860 else 2861 mod_timer(&vport->fc_fdmitmo, jiffies + HZ * 60); 2862 2863 /* decrement the node reference count held for this callback 2864 * function. 2865 */ 2866 lpfc_nlp_put(ndlp); 2867 lpfc_mbuf_free(phba, mp->virt, mp->phys); 2868 kfree(mp); 2869 mempool_free(pmb, phba->mbox_mem_pool); 2870 2871 return; 2872 } 2873 2874 static int 2875 lpfc_filter_by_rpi(struct lpfc_nodelist *ndlp, void *param) 2876 { 2877 uint16_t *rpi = param; 2878 2879 return ndlp->nlp_rpi == *rpi; 2880 } 2881 2882 static int 2883 lpfc_filter_by_wwpn(struct lpfc_nodelist *ndlp, void *param) 2884 { 2885 return memcmp(&ndlp->nlp_portname, param, 2886 sizeof(ndlp->nlp_portname)) == 0; 2887 } 2888 2889 static struct lpfc_nodelist * 2890 __lpfc_find_node(struct lpfc_vport *vport, node_filter filter, void *param) 2891 { 2892 struct lpfc_nodelist *ndlp; 2893 2894 list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) { 2895 if (filter(ndlp, param)) 2896 return ndlp; 2897 } 2898 return NULL; 2899 } 2900 2901 /* 2902 * This routine looks up the ndlp lists for the given RPI. If rpi found it 2903 * returns the node list element pointer else return NULL. 2904 */ 2905 struct lpfc_nodelist * 2906 __lpfc_findnode_rpi(struct lpfc_vport *vport, uint16_t rpi) 2907 { 2908 return __lpfc_find_node(vport, lpfc_filter_by_rpi, &rpi); 2909 } 2910 2911 /* 2912 * This routine looks up the ndlp lists for the given WWPN. If WWPN found it 2913 * returns the node element list pointer else return NULL. 2914 */ 2915 struct lpfc_nodelist * 2916 lpfc_findnode_wwpn(struct lpfc_vport *vport, struct lpfc_name *wwpn) 2917 { 2918 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 2919 struct lpfc_nodelist *ndlp; 2920 2921 spin_lock_irq(shost->host_lock); 2922 ndlp = __lpfc_find_node(vport, lpfc_filter_by_wwpn, wwpn); 2923 spin_unlock_irq(shost->host_lock); 2924 return ndlp; 2925 } 2926 2927 void 2928 lpfc_nlp_init(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 2929 uint32_t did) 2930 { 2931 memset(ndlp, 0, sizeof (struct lpfc_nodelist)); 2932 INIT_LIST_HEAD(&ndlp->els_retry_evt.evt_listp); 2933 INIT_LIST_HEAD(&ndlp->dev_loss_evt.evt_listp); 2934 init_timer(&ndlp->nlp_delayfunc); 2935 ndlp->nlp_delayfunc.function = lpfc_els_retry_delay; 2936 ndlp->nlp_delayfunc.data = (unsigned long)ndlp; 2937 ndlp->nlp_DID = did; 2938 ndlp->vport = vport; 2939 ndlp->nlp_sid = NLP_NO_SID; 2940 INIT_LIST_HEAD(&ndlp->nlp_listp); 2941 kref_init(&ndlp->kref); 2942 NLP_INT_NODE_ACT(ndlp); 2943 2944 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE, 2945 "node init: did:x%x", 2946 ndlp->nlp_DID, 0, 0); 2947 2948 return; 2949 } 2950 2951 /* This routine releases all resources associated with a specifc NPort's ndlp 2952 * and mempool_free's the nodelist. 2953 */ 2954 static void 2955 lpfc_nlp_release(struct kref *kref) 2956 { 2957 struct lpfc_hba *phba; 2958 unsigned long flags; 2959 struct lpfc_nodelist *ndlp = container_of(kref, struct lpfc_nodelist, 2960 kref); 2961 2962 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE, 2963 "node release: did:x%x flg:x%x type:x%x", 2964 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type); 2965 2966 lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_NODE, 2967 "0279 lpfc_nlp_release: ndlp:x%p " 2968 "usgmap:x%x refcnt:%d\n", 2969 (void *)ndlp, ndlp->nlp_usg_map, 2970 atomic_read(&ndlp->kref.refcount)); 2971 2972 /* remove ndlp from action. */ 2973 lpfc_nlp_remove(ndlp->vport, ndlp); 2974 2975 /* clear the ndlp active flag for all release cases */ 2976 phba = ndlp->vport->phba; 2977 spin_lock_irqsave(&phba->ndlp_lock, flags); 2978 NLP_CLR_NODE_ACT(ndlp); 2979 spin_unlock_irqrestore(&phba->ndlp_lock, flags); 2980 2981 /* free ndlp memory for final ndlp release */ 2982 if (NLP_CHK_FREE_REQ(ndlp)) 2983 mempool_free(ndlp, ndlp->vport->phba->nlp_mem_pool); 2984 } 2985 2986 /* This routine bumps the reference count for a ndlp structure to ensure 2987 * that one discovery thread won't free a ndlp while another discovery thread 2988 * is using it. 2989 */ 2990 struct lpfc_nodelist * 2991 lpfc_nlp_get(struct lpfc_nodelist *ndlp) 2992 { 2993 struct lpfc_hba *phba; 2994 unsigned long flags; 2995 2996 if (ndlp) { 2997 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE, 2998 "node get: did:x%x flg:x%x refcnt:x%x", 2999 ndlp->nlp_DID, ndlp->nlp_flag, 3000 atomic_read(&ndlp->kref.refcount)); 3001 /* The check of ndlp usage to prevent incrementing the 3002 * ndlp reference count that is in the process of being 3003 * released. 3004 */ 3005 phba = ndlp->vport->phba; 3006 spin_lock_irqsave(&phba->ndlp_lock, flags); 3007 if (!NLP_CHK_NODE_ACT(ndlp) || NLP_CHK_FREE_ACK(ndlp)) { 3008 spin_unlock_irqrestore(&phba->ndlp_lock, flags); 3009 lpfc_printf_vlog(ndlp->vport, KERN_WARNING, LOG_NODE, 3010 "0276 lpfc_nlp_get: ndlp:x%p " 3011 "usgmap:x%x refcnt:%d\n", 3012 (void *)ndlp, ndlp->nlp_usg_map, 3013 atomic_read(&ndlp->kref.refcount)); 3014 return NULL; 3015 } else 3016 kref_get(&ndlp->kref); 3017 spin_unlock_irqrestore(&phba->ndlp_lock, flags); 3018 } 3019 return ndlp; 3020 } 3021 3022 /* This routine decrements the reference count for a ndlp structure. If the 3023 * count goes to 0, this indicates the the associated nodelist should be 3024 * freed. Returning 1 indicates the ndlp resource has been released; on the 3025 * other hand, returning 0 indicates the ndlp resource has not been released 3026 * yet. 3027 */ 3028 int 3029 lpfc_nlp_put(struct lpfc_nodelist *ndlp) 3030 { 3031 struct lpfc_hba *phba; 3032 unsigned long flags; 3033 3034 if (!ndlp) 3035 return 1; 3036 3037 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE, 3038 "node put: did:x%x flg:x%x refcnt:x%x", 3039 ndlp->nlp_DID, ndlp->nlp_flag, 3040 atomic_read(&ndlp->kref.refcount)); 3041 phba = ndlp->vport->phba; 3042 spin_lock_irqsave(&phba->ndlp_lock, flags); 3043 /* Check the ndlp memory free acknowledge flag to avoid the 3044 * possible race condition that kref_put got invoked again 3045 * after previous one has done ndlp memory free. 3046 */ 3047 if (NLP_CHK_FREE_ACK(ndlp)) { 3048 spin_unlock_irqrestore(&phba->ndlp_lock, flags); 3049 lpfc_printf_vlog(ndlp->vport, KERN_WARNING, LOG_NODE, 3050 "0274 lpfc_nlp_put: ndlp:x%p " 3051 "usgmap:x%x refcnt:%d\n", 3052 (void *)ndlp, ndlp->nlp_usg_map, 3053 atomic_read(&ndlp->kref.refcount)); 3054 return 1; 3055 } 3056 /* Check the ndlp inactivate log flag to avoid the possible 3057 * race condition that kref_put got invoked again after ndlp 3058 * is already in inactivating state. 3059 */ 3060 if (NLP_CHK_IACT_REQ(ndlp)) { 3061 spin_unlock_irqrestore(&phba->ndlp_lock, flags); 3062 lpfc_printf_vlog(ndlp->vport, KERN_WARNING, LOG_NODE, 3063 "0275 lpfc_nlp_put: ndlp:x%p " 3064 "usgmap:x%x refcnt:%d\n", 3065 (void *)ndlp, ndlp->nlp_usg_map, 3066 atomic_read(&ndlp->kref.refcount)); 3067 return 1; 3068 } 3069 /* For last put, mark the ndlp usage flags to make sure no 3070 * other kref_get and kref_put on the same ndlp shall get 3071 * in between the process when the final kref_put has been 3072 * invoked on this ndlp. 3073 */ 3074 if (atomic_read(&ndlp->kref.refcount) == 1) { 3075 /* Indicate ndlp is put to inactive state. */ 3076 NLP_SET_IACT_REQ(ndlp); 3077 /* Acknowledge ndlp memory free has been seen. */ 3078 if (NLP_CHK_FREE_REQ(ndlp)) 3079 NLP_SET_FREE_ACK(ndlp); 3080 } 3081 spin_unlock_irqrestore(&phba->ndlp_lock, flags); 3082 /* Note, the kref_put returns 1 when decrementing a reference 3083 * count that was 1, it invokes the release callback function, 3084 * but it still left the reference count as 1 (not actually 3085 * performs the last decrementation). Otherwise, it actually 3086 * decrements the reference count and returns 0. 3087 */ 3088 return kref_put(&ndlp->kref, lpfc_nlp_release); 3089 } 3090 3091 /* This routine free's the specified nodelist if it is not in use 3092 * by any other discovery thread. This routine returns 1 if the 3093 * ndlp has been freed. A return value of 0 indicates the ndlp is 3094 * not yet been released. 3095 */ 3096 int 3097 lpfc_nlp_not_used(struct lpfc_nodelist *ndlp) 3098 { 3099 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE, 3100 "node not used: did:x%x flg:x%x refcnt:x%x", 3101 ndlp->nlp_DID, ndlp->nlp_flag, 3102 atomic_read(&ndlp->kref.refcount)); 3103 if (atomic_read(&ndlp->kref.refcount) == 1) 3104 if (lpfc_nlp_put(ndlp)) 3105 return 1; 3106 return 0; 3107 } 3108