1 /******************************************************************* 2 * This file is part of the Emulex Linux Device Driver for * 3 * Fibre Channel Host Bus Adapters. * 4 * Copyright (C) 2004-2011 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/delay.h> 24 #include <linux/slab.h> 25 #include <linux/pci.h> 26 #include <linux/kthread.h> 27 #include <linux/interrupt.h> 28 29 #include <scsi/scsi.h> 30 #include <scsi/scsi_device.h> 31 #include <scsi/scsi_host.h> 32 #include <scsi/scsi_transport_fc.h> 33 34 #include "lpfc_hw4.h" 35 #include "lpfc_hw.h" 36 #include "lpfc_nl.h" 37 #include "lpfc_disc.h" 38 #include "lpfc_sli.h" 39 #include "lpfc_sli4.h" 40 #include "lpfc_scsi.h" 41 #include "lpfc.h" 42 #include "lpfc_logmsg.h" 43 #include "lpfc_crtn.h" 44 #include "lpfc_vport.h" 45 #include "lpfc_debugfs.h" 46 47 /* AlpaArray for assignment of scsid for scan-down and bind_method */ 48 static uint8_t lpfcAlpaArray[] = { 49 0xEF, 0xE8, 0xE4, 0xE2, 0xE1, 0xE0, 0xDC, 0xDA, 0xD9, 0xD6, 50 0xD5, 0xD4, 0xD3, 0xD2, 0xD1, 0xCE, 0xCD, 0xCC, 0xCB, 0xCA, 51 0xC9, 0xC7, 0xC6, 0xC5, 0xC3, 0xBC, 0xBA, 0xB9, 0xB6, 0xB5, 52 0xB4, 0xB3, 0xB2, 0xB1, 0xAE, 0xAD, 0xAC, 0xAB, 0xAA, 0xA9, 53 0xA7, 0xA6, 0xA5, 0xA3, 0x9F, 0x9E, 0x9D, 0x9B, 0x98, 0x97, 54 0x90, 0x8F, 0x88, 0x84, 0x82, 0x81, 0x80, 0x7C, 0x7A, 0x79, 55 0x76, 0x75, 0x74, 0x73, 0x72, 0x71, 0x6E, 0x6D, 0x6C, 0x6B, 56 0x6A, 0x69, 0x67, 0x66, 0x65, 0x63, 0x5C, 0x5A, 0x59, 0x56, 57 0x55, 0x54, 0x53, 0x52, 0x51, 0x4E, 0x4D, 0x4C, 0x4B, 0x4A, 58 0x49, 0x47, 0x46, 0x45, 0x43, 0x3C, 0x3A, 0x39, 0x36, 0x35, 59 0x34, 0x33, 0x32, 0x31, 0x2E, 0x2D, 0x2C, 0x2B, 0x2A, 0x29, 60 0x27, 0x26, 0x25, 0x23, 0x1F, 0x1E, 0x1D, 0x1B, 0x18, 0x17, 61 0x10, 0x0F, 0x08, 0x04, 0x02, 0x01 62 }; 63 64 static void lpfc_disc_timeout_handler(struct lpfc_vport *); 65 static void lpfc_disc_flush_list(struct lpfc_vport *vport); 66 static void lpfc_unregister_fcfi_cmpl(struct lpfc_hba *, LPFC_MBOXQ_t *); 67 static int lpfc_fcf_inuse(struct lpfc_hba *); 68 69 void 70 lpfc_terminate_rport_io(struct fc_rport *rport) 71 { 72 struct lpfc_rport_data *rdata; 73 struct lpfc_nodelist * ndlp; 74 struct lpfc_hba *phba; 75 76 rdata = rport->dd_data; 77 ndlp = rdata->pnode; 78 79 if (!ndlp || !NLP_CHK_NODE_ACT(ndlp)) { 80 if (rport->roles & FC_RPORT_ROLE_FCP_TARGET) 81 printk(KERN_ERR "Cannot find remote node" 82 " to terminate I/O Data x%x\n", 83 rport->port_id); 84 return; 85 } 86 87 phba = ndlp->phba; 88 89 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_RPORT, 90 "rport terminate: sid:x%x did:x%x flg:x%x", 91 ndlp->nlp_sid, ndlp->nlp_DID, ndlp->nlp_flag); 92 93 if (ndlp->nlp_sid != NLP_NO_SID) { 94 lpfc_sli_abort_iocb(ndlp->vport, 95 &phba->sli.ring[phba->sli.fcp_ring], 96 ndlp->nlp_sid, 0, LPFC_CTX_TGT); 97 } 98 } 99 100 /* 101 * This function will be called when dev_loss_tmo fire. 102 */ 103 void 104 lpfc_dev_loss_tmo_callbk(struct fc_rport *rport) 105 { 106 struct lpfc_rport_data *rdata; 107 struct lpfc_nodelist * ndlp; 108 struct lpfc_vport *vport; 109 struct lpfc_hba *phba; 110 struct lpfc_work_evt *evtp; 111 int put_node; 112 int put_rport; 113 114 rdata = rport->dd_data; 115 ndlp = rdata->pnode; 116 if (!ndlp || !NLP_CHK_NODE_ACT(ndlp)) 117 return; 118 119 vport = ndlp->vport; 120 phba = vport->phba; 121 122 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT, 123 "rport devlosscb: sid:x%x did:x%x flg:x%x", 124 ndlp->nlp_sid, ndlp->nlp_DID, ndlp->nlp_flag); 125 126 /* Don't defer this if we are in the process of deleting the vport 127 * or unloading the driver. The unload will cleanup the node 128 * appropriately we just need to cleanup the ndlp rport info here. 129 */ 130 if (vport->load_flag & FC_UNLOADING) { 131 put_node = rdata->pnode != NULL; 132 put_rport = ndlp->rport != NULL; 133 rdata->pnode = NULL; 134 ndlp->rport = NULL; 135 if (put_node) 136 lpfc_nlp_put(ndlp); 137 if (put_rport) 138 put_device(&rport->dev); 139 return; 140 } 141 142 if (ndlp->nlp_state == NLP_STE_MAPPED_NODE) 143 return; 144 145 evtp = &ndlp->dev_loss_evt; 146 147 if (!list_empty(&evtp->evt_listp)) 148 return; 149 150 spin_lock_irq(&phba->hbalock); 151 /* We need to hold the node by incrementing the reference 152 * count until this queued work is done 153 */ 154 evtp->evt_arg1 = lpfc_nlp_get(ndlp); 155 if (evtp->evt_arg1) { 156 evtp->evt = LPFC_EVT_DEV_LOSS; 157 list_add_tail(&evtp->evt_listp, &phba->work_list); 158 lpfc_worker_wake_up(phba); 159 } 160 spin_unlock_irq(&phba->hbalock); 161 162 return; 163 } 164 165 /** 166 * lpfc_dev_loss_tmo_handler - Remote node devloss timeout handler 167 * @ndlp: Pointer to remote node object. 168 * 169 * This function is called from the worker thread when devloss timeout timer 170 * expires. For SLI4 host, this routine shall return 1 when at lease one 171 * remote node, including this @ndlp, is still in use of FCF; otherwise, this 172 * routine shall return 0 when there is no remote node is still in use of FCF 173 * when devloss timeout happened to this @ndlp. 174 **/ 175 static int 176 lpfc_dev_loss_tmo_handler(struct lpfc_nodelist *ndlp) 177 { 178 struct lpfc_rport_data *rdata; 179 struct fc_rport *rport; 180 struct lpfc_vport *vport; 181 struct lpfc_hba *phba; 182 uint8_t *name; 183 int put_node; 184 int put_rport; 185 int warn_on = 0; 186 int fcf_inuse = 0; 187 188 rport = ndlp->rport; 189 190 if (!rport) 191 return fcf_inuse; 192 193 rdata = rport->dd_data; 194 name = (uint8_t *) &ndlp->nlp_portname; 195 vport = ndlp->vport; 196 phba = vport->phba; 197 198 if (phba->sli_rev == LPFC_SLI_REV4) 199 fcf_inuse = lpfc_fcf_inuse(phba); 200 201 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT, 202 "rport devlosstmo:did:x%x type:x%x id:x%x", 203 ndlp->nlp_DID, ndlp->nlp_type, rport->scsi_target_id); 204 205 /* Don't defer this if we are in the process of deleting the vport 206 * or unloading the driver. The unload will cleanup the node 207 * appropriately we just need to cleanup the ndlp rport info here. 208 */ 209 if (vport->load_flag & FC_UNLOADING) { 210 if (ndlp->nlp_sid != NLP_NO_SID) { 211 /* flush the target */ 212 lpfc_sli_abort_iocb(vport, 213 &phba->sli.ring[phba->sli.fcp_ring], 214 ndlp->nlp_sid, 0, LPFC_CTX_TGT); 215 } 216 put_node = rdata->pnode != NULL; 217 put_rport = ndlp->rport != NULL; 218 rdata->pnode = NULL; 219 ndlp->rport = NULL; 220 if (put_node) 221 lpfc_nlp_put(ndlp); 222 if (put_rport) 223 put_device(&rport->dev); 224 return fcf_inuse; 225 } 226 227 if (ndlp->nlp_state == NLP_STE_MAPPED_NODE) { 228 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, 229 "0284 Devloss timeout Ignored on " 230 "WWPN %x:%x:%x:%x:%x:%x:%x:%x " 231 "NPort x%x\n", 232 *name, *(name+1), *(name+2), *(name+3), 233 *(name+4), *(name+5), *(name+6), *(name+7), 234 ndlp->nlp_DID); 235 return fcf_inuse; 236 } 237 238 if (ndlp->nlp_type & NLP_FABRIC) { 239 /* We will clean up these Nodes in linkup */ 240 put_node = rdata->pnode != NULL; 241 put_rport = ndlp->rport != NULL; 242 rdata->pnode = NULL; 243 ndlp->rport = NULL; 244 if (put_node) 245 lpfc_nlp_put(ndlp); 246 if (put_rport) 247 put_device(&rport->dev); 248 return fcf_inuse; 249 } 250 251 if (ndlp->nlp_sid != NLP_NO_SID) { 252 warn_on = 1; 253 /* flush the target */ 254 lpfc_sli_abort_iocb(vport, &phba->sli.ring[phba->sli.fcp_ring], 255 ndlp->nlp_sid, 0, LPFC_CTX_TGT); 256 } 257 258 if (warn_on) { 259 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY, 260 "0203 Devloss timeout on " 261 "WWPN %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x " 262 "NPort x%06x Data: x%x x%x x%x\n", 263 *name, *(name+1), *(name+2), *(name+3), 264 *(name+4), *(name+5), *(name+6), *(name+7), 265 ndlp->nlp_DID, ndlp->nlp_flag, 266 ndlp->nlp_state, ndlp->nlp_rpi); 267 } else { 268 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, 269 "0204 Devloss timeout on " 270 "WWPN %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x " 271 "NPort x%06x Data: x%x x%x x%x\n", 272 *name, *(name+1), *(name+2), *(name+3), 273 *(name+4), *(name+5), *(name+6), *(name+7), 274 ndlp->nlp_DID, ndlp->nlp_flag, 275 ndlp->nlp_state, ndlp->nlp_rpi); 276 } 277 278 put_node = rdata->pnode != NULL; 279 put_rport = ndlp->rport != NULL; 280 rdata->pnode = NULL; 281 ndlp->rport = NULL; 282 if (put_node) 283 lpfc_nlp_put(ndlp); 284 if (put_rport) 285 put_device(&rport->dev); 286 287 if (!(vport->load_flag & FC_UNLOADING) && 288 !(ndlp->nlp_flag & NLP_DELAY_TMO) && 289 !(ndlp->nlp_flag & NLP_NPR_2B_DISC) && 290 (ndlp->nlp_state != NLP_STE_UNMAPPED_NODE) && 291 (ndlp->nlp_state != NLP_STE_REG_LOGIN_ISSUE) && 292 (ndlp->nlp_state != NLP_STE_PRLI_ISSUE)) 293 lpfc_disc_state_machine(vport, ndlp, NULL, NLP_EVT_DEVICE_RM); 294 295 return fcf_inuse; 296 } 297 298 /** 299 * lpfc_sli4_post_dev_loss_tmo_handler - SLI4 post devloss timeout handler 300 * @phba: Pointer to hba context object. 301 * @fcf_inuse: SLI4 FCF in-use state reported from devloss timeout handler. 302 * @nlp_did: remote node identifer with devloss timeout. 303 * 304 * This function is called from the worker thread after invoking devloss 305 * timeout handler and releasing the reference count for the ndlp with 306 * which the devloss timeout was handled for SLI4 host. For the devloss 307 * timeout of the last remote node which had been in use of FCF, when this 308 * routine is invoked, it shall be guaranteed that none of the remote are 309 * in-use of FCF. When devloss timeout to the last remote using the FCF, 310 * if the FIP engine is neither in FCF table scan process nor roundrobin 311 * failover process, the in-use FCF shall be unregistered. If the FIP 312 * engine is in FCF discovery process, the devloss timeout state shall 313 * be set for either the FCF table scan process or roundrobin failover 314 * process to unregister the in-use FCF. 315 **/ 316 static void 317 lpfc_sli4_post_dev_loss_tmo_handler(struct lpfc_hba *phba, int fcf_inuse, 318 uint32_t nlp_did) 319 { 320 /* If devloss timeout happened to a remote node when FCF had no 321 * longer been in-use, do nothing. 322 */ 323 if (!fcf_inuse) 324 return; 325 326 if ((phba->hba_flag & HBA_FIP_SUPPORT) && !lpfc_fcf_inuse(phba)) { 327 spin_lock_irq(&phba->hbalock); 328 if (phba->fcf.fcf_flag & FCF_DISCOVERY) { 329 if (phba->hba_flag & HBA_DEVLOSS_TMO) { 330 spin_unlock_irq(&phba->hbalock); 331 return; 332 } 333 phba->hba_flag |= HBA_DEVLOSS_TMO; 334 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 335 "2847 Last remote node (x%x) using " 336 "FCF devloss tmo\n", nlp_did); 337 } 338 if (phba->fcf.fcf_flag & FCF_REDISC_PROG) { 339 spin_unlock_irq(&phba->hbalock); 340 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 341 "2868 Devloss tmo to FCF rediscovery " 342 "in progress\n"); 343 return; 344 } 345 if (!(phba->hba_flag & (FCF_TS_INPROG | FCF_RR_INPROG))) { 346 spin_unlock_irq(&phba->hbalock); 347 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 348 "2869 Devloss tmo to idle FIP engine, " 349 "unreg in-use FCF and rescan.\n"); 350 /* Unregister in-use FCF and rescan */ 351 lpfc_unregister_fcf_rescan(phba); 352 return; 353 } 354 spin_unlock_irq(&phba->hbalock); 355 if (phba->hba_flag & FCF_TS_INPROG) 356 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 357 "2870 FCF table scan in progress\n"); 358 if (phba->hba_flag & FCF_RR_INPROG) 359 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 360 "2871 FLOGI roundrobin FCF failover " 361 "in progress\n"); 362 } 363 lpfc_unregister_unused_fcf(phba); 364 } 365 366 /** 367 * lpfc_alloc_fast_evt - Allocates data structure for posting event 368 * @phba: Pointer to hba context object. 369 * 370 * This function is called from the functions which need to post 371 * events from interrupt context. This function allocates data 372 * structure required for posting event. It also keeps track of 373 * number of events pending and prevent event storm when there are 374 * too many events. 375 **/ 376 struct lpfc_fast_path_event * 377 lpfc_alloc_fast_evt(struct lpfc_hba *phba) { 378 struct lpfc_fast_path_event *ret; 379 380 /* If there are lot of fast event do not exhaust memory due to this */ 381 if (atomic_read(&phba->fast_event_count) > LPFC_MAX_EVT_COUNT) 382 return NULL; 383 384 ret = kzalloc(sizeof(struct lpfc_fast_path_event), 385 GFP_ATOMIC); 386 if (ret) { 387 atomic_inc(&phba->fast_event_count); 388 INIT_LIST_HEAD(&ret->work_evt.evt_listp); 389 ret->work_evt.evt = LPFC_EVT_FASTPATH_MGMT_EVT; 390 } 391 return ret; 392 } 393 394 /** 395 * lpfc_free_fast_evt - Frees event data structure 396 * @phba: Pointer to hba context object. 397 * @evt: Event object which need to be freed. 398 * 399 * This function frees the data structure required for posting 400 * events. 401 **/ 402 void 403 lpfc_free_fast_evt(struct lpfc_hba *phba, 404 struct lpfc_fast_path_event *evt) { 405 406 atomic_dec(&phba->fast_event_count); 407 kfree(evt); 408 } 409 410 /** 411 * lpfc_send_fastpath_evt - Posts events generated from fast path 412 * @phba: Pointer to hba context object. 413 * @evtp: Event data structure. 414 * 415 * This function is called from worker thread, when the interrupt 416 * context need to post an event. This function posts the event 417 * to fc transport netlink interface. 418 **/ 419 static void 420 lpfc_send_fastpath_evt(struct lpfc_hba *phba, 421 struct lpfc_work_evt *evtp) 422 { 423 unsigned long evt_category, evt_sub_category; 424 struct lpfc_fast_path_event *fast_evt_data; 425 char *evt_data; 426 uint32_t evt_data_size; 427 struct Scsi_Host *shost; 428 429 fast_evt_data = container_of(evtp, struct lpfc_fast_path_event, 430 work_evt); 431 432 evt_category = (unsigned long) fast_evt_data->un.fabric_evt.event_type; 433 evt_sub_category = (unsigned long) fast_evt_data->un. 434 fabric_evt.subcategory; 435 shost = lpfc_shost_from_vport(fast_evt_data->vport); 436 if (evt_category == FC_REG_FABRIC_EVENT) { 437 if (evt_sub_category == LPFC_EVENT_FCPRDCHKERR) { 438 evt_data = (char *) &fast_evt_data->un.read_check_error; 439 evt_data_size = sizeof(fast_evt_data->un. 440 read_check_error); 441 } else if ((evt_sub_category == LPFC_EVENT_FABRIC_BUSY) || 442 (evt_sub_category == LPFC_EVENT_PORT_BUSY)) { 443 evt_data = (char *) &fast_evt_data->un.fabric_evt; 444 evt_data_size = sizeof(fast_evt_data->un.fabric_evt); 445 } else { 446 lpfc_free_fast_evt(phba, fast_evt_data); 447 return; 448 } 449 } else if (evt_category == FC_REG_SCSI_EVENT) { 450 switch (evt_sub_category) { 451 case LPFC_EVENT_QFULL: 452 case LPFC_EVENT_DEVBSY: 453 evt_data = (char *) &fast_evt_data->un.scsi_evt; 454 evt_data_size = sizeof(fast_evt_data->un.scsi_evt); 455 break; 456 case LPFC_EVENT_CHECK_COND: 457 evt_data = (char *) &fast_evt_data->un.check_cond_evt; 458 evt_data_size = sizeof(fast_evt_data->un. 459 check_cond_evt); 460 break; 461 case LPFC_EVENT_VARQUEDEPTH: 462 evt_data = (char *) &fast_evt_data->un.queue_depth_evt; 463 evt_data_size = sizeof(fast_evt_data->un. 464 queue_depth_evt); 465 break; 466 default: 467 lpfc_free_fast_evt(phba, fast_evt_data); 468 return; 469 } 470 } else { 471 lpfc_free_fast_evt(phba, fast_evt_data); 472 return; 473 } 474 475 fc_host_post_vendor_event(shost, 476 fc_get_event_number(), 477 evt_data_size, 478 evt_data, 479 LPFC_NL_VENDOR_ID); 480 481 lpfc_free_fast_evt(phba, fast_evt_data); 482 return; 483 } 484 485 static void 486 lpfc_work_list_done(struct lpfc_hba *phba) 487 { 488 struct lpfc_work_evt *evtp = NULL; 489 struct lpfc_nodelist *ndlp; 490 int free_evt; 491 int fcf_inuse; 492 uint32_t nlp_did; 493 494 spin_lock_irq(&phba->hbalock); 495 while (!list_empty(&phba->work_list)) { 496 list_remove_head((&phba->work_list), evtp, typeof(*evtp), 497 evt_listp); 498 spin_unlock_irq(&phba->hbalock); 499 free_evt = 1; 500 switch (evtp->evt) { 501 case LPFC_EVT_ELS_RETRY: 502 ndlp = (struct lpfc_nodelist *) (evtp->evt_arg1); 503 lpfc_els_retry_delay_handler(ndlp); 504 free_evt = 0; /* evt is part of ndlp */ 505 /* decrement the node reference count held 506 * for this queued work 507 */ 508 lpfc_nlp_put(ndlp); 509 break; 510 case LPFC_EVT_DEV_LOSS: 511 ndlp = (struct lpfc_nodelist *)(evtp->evt_arg1); 512 fcf_inuse = lpfc_dev_loss_tmo_handler(ndlp); 513 free_evt = 0; 514 /* decrement the node reference count held for 515 * this queued work 516 */ 517 nlp_did = ndlp->nlp_DID; 518 lpfc_nlp_put(ndlp); 519 if (phba->sli_rev == LPFC_SLI_REV4) 520 lpfc_sli4_post_dev_loss_tmo_handler(phba, 521 fcf_inuse, 522 nlp_did); 523 break; 524 case LPFC_EVT_ONLINE: 525 if (phba->link_state < LPFC_LINK_DOWN) 526 *(int *) (evtp->evt_arg1) = lpfc_online(phba); 527 else 528 *(int *) (evtp->evt_arg1) = 0; 529 complete((struct completion *)(evtp->evt_arg2)); 530 break; 531 case LPFC_EVT_OFFLINE_PREP: 532 if (phba->link_state >= LPFC_LINK_DOWN) 533 lpfc_offline_prep(phba); 534 *(int *)(evtp->evt_arg1) = 0; 535 complete((struct completion *)(evtp->evt_arg2)); 536 break; 537 case LPFC_EVT_OFFLINE: 538 lpfc_offline(phba); 539 lpfc_sli_brdrestart(phba); 540 *(int *)(evtp->evt_arg1) = 541 lpfc_sli_brdready(phba, HS_FFRDY | HS_MBRDY); 542 lpfc_unblock_mgmt_io(phba); 543 complete((struct completion *)(evtp->evt_arg2)); 544 break; 545 case LPFC_EVT_WARM_START: 546 lpfc_offline(phba); 547 lpfc_reset_barrier(phba); 548 lpfc_sli_brdreset(phba); 549 lpfc_hba_down_post(phba); 550 *(int *)(evtp->evt_arg1) = 551 lpfc_sli_brdready(phba, HS_MBRDY); 552 lpfc_unblock_mgmt_io(phba); 553 complete((struct completion *)(evtp->evt_arg2)); 554 break; 555 case LPFC_EVT_KILL: 556 lpfc_offline(phba); 557 *(int *)(evtp->evt_arg1) 558 = (phba->pport->stopped) 559 ? 0 : lpfc_sli_brdkill(phba); 560 lpfc_unblock_mgmt_io(phba); 561 complete((struct completion *)(evtp->evt_arg2)); 562 break; 563 case LPFC_EVT_FASTPATH_MGMT_EVT: 564 lpfc_send_fastpath_evt(phba, evtp); 565 free_evt = 0; 566 break; 567 case LPFC_EVT_RESET_HBA: 568 if (!(phba->pport->load_flag & FC_UNLOADING)) 569 lpfc_reset_hba(phba); 570 break; 571 } 572 if (free_evt) 573 kfree(evtp); 574 spin_lock_irq(&phba->hbalock); 575 } 576 spin_unlock_irq(&phba->hbalock); 577 578 } 579 580 static void 581 lpfc_work_done(struct lpfc_hba *phba) 582 { 583 struct lpfc_sli_ring *pring; 584 uint32_t ha_copy, status, control, work_port_events; 585 struct lpfc_vport **vports; 586 struct lpfc_vport *vport; 587 int i; 588 589 spin_lock_irq(&phba->hbalock); 590 ha_copy = phba->work_ha; 591 phba->work_ha = 0; 592 spin_unlock_irq(&phba->hbalock); 593 594 /* First, try to post the next mailbox command to SLI4 device */ 595 if (phba->pci_dev_grp == LPFC_PCI_DEV_OC) 596 lpfc_sli4_post_async_mbox(phba); 597 598 if (ha_copy & HA_ERATT) 599 /* Handle the error attention event */ 600 lpfc_handle_eratt(phba); 601 602 if (ha_copy & HA_MBATT) 603 lpfc_sli_handle_mb_event(phba); 604 605 if (ha_copy & HA_LATT) 606 lpfc_handle_latt(phba); 607 608 /* Process SLI4 events */ 609 if (phba->pci_dev_grp == LPFC_PCI_DEV_OC) { 610 if (phba->hba_flag & HBA_RRQ_ACTIVE) 611 lpfc_handle_rrq_active(phba); 612 if (phba->hba_flag & FCP_XRI_ABORT_EVENT) 613 lpfc_sli4_fcp_xri_abort_event_proc(phba); 614 if (phba->hba_flag & ELS_XRI_ABORT_EVENT) 615 lpfc_sli4_els_xri_abort_event_proc(phba); 616 if (phba->hba_flag & ASYNC_EVENT) 617 lpfc_sli4_async_event_proc(phba); 618 if (phba->hba_flag & HBA_POST_RECEIVE_BUFFER) { 619 spin_lock_irq(&phba->hbalock); 620 phba->hba_flag &= ~HBA_POST_RECEIVE_BUFFER; 621 spin_unlock_irq(&phba->hbalock); 622 lpfc_sli_hbqbuf_add_hbqs(phba, LPFC_ELS_HBQ); 623 } 624 if (phba->fcf.fcf_flag & FCF_REDISC_EVT) 625 lpfc_sli4_fcf_redisc_event_proc(phba); 626 } 627 628 vports = lpfc_create_vport_work_array(phba); 629 if (vports != NULL) 630 for (i = 0; i <= phba->max_vports; i++) { 631 /* 632 * We could have no vports in array if unloading, so if 633 * this happens then just use the pport 634 */ 635 if (vports[i] == NULL && i == 0) 636 vport = phba->pport; 637 else 638 vport = vports[i]; 639 if (vport == NULL) 640 break; 641 spin_lock_irq(&vport->work_port_lock); 642 work_port_events = vport->work_port_events; 643 vport->work_port_events &= ~work_port_events; 644 spin_unlock_irq(&vport->work_port_lock); 645 if (work_port_events & WORKER_DISC_TMO) 646 lpfc_disc_timeout_handler(vport); 647 if (work_port_events & WORKER_ELS_TMO) 648 lpfc_els_timeout_handler(vport); 649 if (work_port_events & WORKER_HB_TMO) 650 lpfc_hb_timeout_handler(phba); 651 if (work_port_events & WORKER_MBOX_TMO) 652 lpfc_mbox_timeout_handler(phba); 653 if (work_port_events & WORKER_FABRIC_BLOCK_TMO) 654 lpfc_unblock_fabric_iocbs(phba); 655 if (work_port_events & WORKER_FDMI_TMO) 656 lpfc_fdmi_timeout_handler(vport); 657 if (work_port_events & WORKER_RAMP_DOWN_QUEUE) 658 lpfc_ramp_down_queue_handler(phba); 659 if (work_port_events & WORKER_RAMP_UP_QUEUE) 660 lpfc_ramp_up_queue_handler(phba); 661 if (work_port_events & WORKER_DELAYED_DISC_TMO) 662 lpfc_delayed_disc_timeout_handler(vport); 663 } 664 lpfc_destroy_vport_work_array(phba, vports); 665 666 pring = &phba->sli.ring[LPFC_ELS_RING]; 667 status = (ha_copy & (HA_RXMASK << (4*LPFC_ELS_RING))); 668 status >>= (4*LPFC_ELS_RING); 669 if ((status & HA_RXMASK) || 670 (pring->flag & LPFC_DEFERRED_RING_EVENT) || 671 (phba->hba_flag & HBA_SP_QUEUE_EVT)) { 672 if (pring->flag & LPFC_STOP_IOCB_EVENT) { 673 pring->flag |= LPFC_DEFERRED_RING_EVENT; 674 /* Set the lpfc data pending flag */ 675 set_bit(LPFC_DATA_READY, &phba->data_flags); 676 } else { 677 pring->flag &= ~LPFC_DEFERRED_RING_EVENT; 678 lpfc_sli_handle_slow_ring_event(phba, pring, 679 (status & 680 HA_RXMASK)); 681 } 682 if ((phba->sli_rev == LPFC_SLI_REV4) && pring->txq_cnt) 683 lpfc_drain_txq(phba); 684 /* 685 * Turn on Ring interrupts 686 */ 687 if (phba->sli_rev <= LPFC_SLI_REV3) { 688 spin_lock_irq(&phba->hbalock); 689 control = readl(phba->HCregaddr); 690 if (!(control & (HC_R0INT_ENA << LPFC_ELS_RING))) { 691 lpfc_debugfs_slow_ring_trc(phba, 692 "WRK Enable ring: cntl:x%x hacopy:x%x", 693 control, ha_copy, 0); 694 695 control |= (HC_R0INT_ENA << LPFC_ELS_RING); 696 writel(control, phba->HCregaddr); 697 readl(phba->HCregaddr); /* flush */ 698 } else { 699 lpfc_debugfs_slow_ring_trc(phba, 700 "WRK Ring ok: cntl:x%x hacopy:x%x", 701 control, ha_copy, 0); 702 } 703 spin_unlock_irq(&phba->hbalock); 704 } 705 } 706 lpfc_work_list_done(phba); 707 } 708 709 int 710 lpfc_do_work(void *p) 711 { 712 struct lpfc_hba *phba = p; 713 int rc; 714 715 set_user_nice(current, -20); 716 phba->data_flags = 0; 717 718 while (!kthread_should_stop()) { 719 /* wait and check worker queue activities */ 720 rc = wait_event_interruptible(phba->work_waitq, 721 (test_and_clear_bit(LPFC_DATA_READY, 722 &phba->data_flags) 723 || kthread_should_stop())); 724 /* Signal wakeup shall terminate the worker thread */ 725 if (rc) { 726 lpfc_printf_log(phba, KERN_ERR, LOG_ELS, 727 "0433 Wakeup on signal: rc=x%x\n", rc); 728 break; 729 } 730 731 /* Attend pending lpfc data processing */ 732 lpfc_work_done(phba); 733 } 734 phba->worker_thread = NULL; 735 lpfc_printf_log(phba, KERN_INFO, LOG_ELS, 736 "0432 Worker thread stopped.\n"); 737 return 0; 738 } 739 740 /* 741 * This is only called to handle FC worker events. Since this a rare 742 * occurrence, we allocate a struct lpfc_work_evt structure here instead of 743 * embedding it in the IOCB. 744 */ 745 int 746 lpfc_workq_post_event(struct lpfc_hba *phba, void *arg1, void *arg2, 747 uint32_t evt) 748 { 749 struct lpfc_work_evt *evtp; 750 unsigned long flags; 751 752 /* 753 * All Mailbox completions and LPFC_ELS_RING rcv ring IOCB events will 754 * be queued to worker thread for processing 755 */ 756 evtp = kmalloc(sizeof(struct lpfc_work_evt), GFP_ATOMIC); 757 if (!evtp) 758 return 0; 759 760 evtp->evt_arg1 = arg1; 761 evtp->evt_arg2 = arg2; 762 evtp->evt = evt; 763 764 spin_lock_irqsave(&phba->hbalock, flags); 765 list_add_tail(&evtp->evt_listp, &phba->work_list); 766 spin_unlock_irqrestore(&phba->hbalock, flags); 767 768 lpfc_worker_wake_up(phba); 769 770 return 1; 771 } 772 773 void 774 lpfc_cleanup_rpis(struct lpfc_vport *vport, int remove) 775 { 776 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 777 struct lpfc_hba *phba = vport->phba; 778 struct lpfc_nodelist *ndlp, *next_ndlp; 779 int rc; 780 781 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) { 782 if (!NLP_CHK_NODE_ACT(ndlp)) 783 continue; 784 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE) 785 continue; 786 if ((phba->sli3_options & LPFC_SLI3_VPORT_TEARDOWN) || 787 ((vport->port_type == LPFC_NPIV_PORT) && 788 (ndlp->nlp_DID == NameServer_DID))) 789 lpfc_unreg_rpi(vport, ndlp); 790 791 /* Leave Fabric nodes alone on link down */ 792 if ((phba->sli_rev < LPFC_SLI_REV4) && 793 (!remove && ndlp->nlp_type & NLP_FABRIC)) 794 continue; 795 rc = lpfc_disc_state_machine(vport, ndlp, NULL, 796 remove 797 ? NLP_EVT_DEVICE_RM 798 : NLP_EVT_DEVICE_RECOVERY); 799 } 800 if (phba->sli3_options & LPFC_SLI3_VPORT_TEARDOWN) { 801 if (phba->sli_rev == LPFC_SLI_REV4) 802 lpfc_sli4_unreg_all_rpis(vport); 803 lpfc_mbx_unreg_vpi(vport); 804 spin_lock_irq(shost->host_lock); 805 vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI; 806 spin_unlock_irq(shost->host_lock); 807 } 808 } 809 810 void 811 lpfc_port_link_failure(struct lpfc_vport *vport) 812 { 813 lpfc_vport_set_state(vport, FC_VPORT_LINKDOWN); 814 815 /* Cleanup any outstanding received buffers */ 816 lpfc_cleanup_rcv_buffers(vport); 817 818 /* Cleanup any outstanding RSCN activity */ 819 lpfc_els_flush_rscn(vport); 820 821 /* Cleanup any outstanding ELS commands */ 822 lpfc_els_flush_cmd(vport); 823 824 lpfc_cleanup_rpis(vport, 0); 825 826 /* Turn off discovery timer if its running */ 827 lpfc_can_disctmo(vport); 828 } 829 830 void 831 lpfc_linkdown_port(struct lpfc_vport *vport) 832 { 833 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 834 835 fc_host_post_event(shost, fc_get_event_number(), FCH_EVT_LINKDOWN, 0); 836 837 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, 838 "Link Down: state:x%x rtry:x%x flg:x%x", 839 vport->port_state, vport->fc_ns_retry, vport->fc_flag); 840 841 lpfc_port_link_failure(vport); 842 843 /* Stop delayed Nport discovery */ 844 spin_lock_irq(shost->host_lock); 845 vport->fc_flag &= ~FC_DISC_DELAYED; 846 spin_unlock_irq(shost->host_lock); 847 del_timer_sync(&vport->delayed_disc_tmo); 848 } 849 850 int 851 lpfc_linkdown(struct lpfc_hba *phba) 852 { 853 struct lpfc_vport *vport = phba->pport; 854 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 855 struct lpfc_vport **vports; 856 LPFC_MBOXQ_t *mb; 857 int i; 858 859 if (phba->link_state == LPFC_LINK_DOWN) 860 return 0; 861 862 /* Block all SCSI stack I/Os */ 863 lpfc_scsi_dev_block(phba); 864 865 spin_lock_irq(&phba->hbalock); 866 phba->fcf.fcf_flag &= ~(FCF_AVAILABLE | FCF_SCAN_DONE); 867 spin_unlock_irq(&phba->hbalock); 868 if (phba->link_state > LPFC_LINK_DOWN) { 869 phba->link_state = LPFC_LINK_DOWN; 870 spin_lock_irq(shost->host_lock); 871 phba->pport->fc_flag &= ~FC_LBIT; 872 spin_unlock_irq(shost->host_lock); 873 } 874 vports = lpfc_create_vport_work_array(phba); 875 if (vports != NULL) 876 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) { 877 /* Issue a LINK DOWN event to all nodes */ 878 lpfc_linkdown_port(vports[i]); 879 } 880 lpfc_destroy_vport_work_array(phba, vports); 881 /* Clean up any firmware default rpi's */ 882 mb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 883 if (mb) { 884 lpfc_unreg_did(phba, 0xffff, LPFC_UNREG_ALL_DFLT_RPIS, mb); 885 mb->vport = vport; 886 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl; 887 if (lpfc_sli_issue_mbox(phba, mb, MBX_NOWAIT) 888 == MBX_NOT_FINISHED) { 889 mempool_free(mb, phba->mbox_mem_pool); 890 } 891 } 892 893 /* Setup myDID for link up if we are in pt2pt mode */ 894 if (phba->pport->fc_flag & FC_PT2PT) { 895 phba->pport->fc_myDID = 0; 896 mb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 897 if (mb) { 898 lpfc_config_link(phba, mb); 899 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl; 900 mb->vport = vport; 901 if (lpfc_sli_issue_mbox(phba, mb, MBX_NOWAIT) 902 == MBX_NOT_FINISHED) { 903 mempool_free(mb, phba->mbox_mem_pool); 904 } 905 } 906 spin_lock_irq(shost->host_lock); 907 phba->pport->fc_flag &= ~(FC_PT2PT | FC_PT2PT_PLOGI); 908 spin_unlock_irq(shost->host_lock); 909 } 910 911 return 0; 912 } 913 914 static void 915 lpfc_linkup_cleanup_nodes(struct lpfc_vport *vport) 916 { 917 struct lpfc_nodelist *ndlp; 918 919 list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) { 920 if (!NLP_CHK_NODE_ACT(ndlp)) 921 continue; 922 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE) 923 continue; 924 if (ndlp->nlp_type & NLP_FABRIC) { 925 /* On Linkup its safe to clean up the ndlp 926 * from Fabric connections. 927 */ 928 if (ndlp->nlp_DID != Fabric_DID) 929 lpfc_unreg_rpi(vport, ndlp); 930 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE); 931 } else if (!(ndlp->nlp_flag & NLP_NPR_ADISC)) { 932 /* Fail outstanding IO now since device is 933 * marked for PLOGI. 934 */ 935 lpfc_unreg_rpi(vport, ndlp); 936 } 937 } 938 } 939 940 static void 941 lpfc_linkup_port(struct lpfc_vport *vport) 942 { 943 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 944 struct lpfc_hba *phba = vport->phba; 945 946 if ((vport->load_flag & FC_UNLOADING) != 0) 947 return; 948 949 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, 950 "Link Up: top:x%x speed:x%x flg:x%x", 951 phba->fc_topology, phba->fc_linkspeed, phba->link_flag); 952 953 /* If NPIV is not enabled, only bring the physical port up */ 954 if (!(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) && 955 (vport != phba->pport)) 956 return; 957 958 fc_host_post_event(shost, fc_get_event_number(), FCH_EVT_LINKUP, 0); 959 960 spin_lock_irq(shost->host_lock); 961 vport->fc_flag &= ~(FC_PT2PT | FC_PT2PT_PLOGI | FC_ABORT_DISCOVERY | 962 FC_RSCN_MODE | FC_NLP_MORE | FC_RSCN_DISCOVERY); 963 vport->fc_flag |= FC_NDISC_ACTIVE; 964 vport->fc_ns_retry = 0; 965 spin_unlock_irq(shost->host_lock); 966 967 if (vport->fc_flag & FC_LBIT) 968 lpfc_linkup_cleanup_nodes(vport); 969 970 } 971 972 static int 973 lpfc_linkup(struct lpfc_hba *phba) 974 { 975 struct lpfc_vport **vports; 976 int i; 977 978 lpfc_cleanup_wt_rrqs(phba); 979 phba->link_state = LPFC_LINK_UP; 980 981 /* Unblock fabric iocbs if they are blocked */ 982 clear_bit(FABRIC_COMANDS_BLOCKED, &phba->bit_flags); 983 del_timer_sync(&phba->fabric_block_timer); 984 985 vports = lpfc_create_vport_work_array(phba); 986 if (vports != NULL) 987 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) 988 lpfc_linkup_port(vports[i]); 989 lpfc_destroy_vport_work_array(phba, vports); 990 if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) && 991 (phba->sli_rev < LPFC_SLI_REV4)) 992 lpfc_issue_clear_la(phba, phba->pport); 993 994 return 0; 995 } 996 997 /* 998 * This routine handles processing a CLEAR_LA mailbox 999 * command upon completion. It is setup in the LPFC_MBOXQ 1000 * as the completion routine when the command is 1001 * handed off to the SLI layer. 1002 */ 1003 static void 1004 lpfc_mbx_cmpl_clear_la(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 1005 { 1006 struct lpfc_vport *vport = pmb->vport; 1007 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 1008 struct lpfc_sli *psli = &phba->sli; 1009 MAILBOX_t *mb = &pmb->u.mb; 1010 uint32_t control; 1011 1012 /* Since we don't do discovery right now, turn these off here */ 1013 psli->ring[psli->extra_ring].flag &= ~LPFC_STOP_IOCB_EVENT; 1014 psli->ring[psli->fcp_ring].flag &= ~LPFC_STOP_IOCB_EVENT; 1015 psli->ring[psli->next_ring].flag &= ~LPFC_STOP_IOCB_EVENT; 1016 1017 /* Check for error */ 1018 if ((mb->mbxStatus) && (mb->mbxStatus != 0x1601)) { 1019 /* CLEAR_LA mbox error <mbxStatus> state <hba_state> */ 1020 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX, 1021 "0320 CLEAR_LA mbxStatus error x%x hba " 1022 "state x%x\n", 1023 mb->mbxStatus, vport->port_state); 1024 phba->link_state = LPFC_HBA_ERROR; 1025 goto out; 1026 } 1027 1028 if (vport->port_type == LPFC_PHYSICAL_PORT) 1029 phba->link_state = LPFC_HBA_READY; 1030 1031 spin_lock_irq(&phba->hbalock); 1032 psli->sli_flag |= LPFC_PROCESS_LA; 1033 control = readl(phba->HCregaddr); 1034 control |= HC_LAINT_ENA; 1035 writel(control, phba->HCregaddr); 1036 readl(phba->HCregaddr); /* flush */ 1037 spin_unlock_irq(&phba->hbalock); 1038 mempool_free(pmb, phba->mbox_mem_pool); 1039 return; 1040 1041 out: 1042 /* Device Discovery completes */ 1043 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, 1044 "0225 Device Discovery completes\n"); 1045 mempool_free(pmb, phba->mbox_mem_pool); 1046 1047 spin_lock_irq(shost->host_lock); 1048 vport->fc_flag &= ~FC_ABORT_DISCOVERY; 1049 spin_unlock_irq(shost->host_lock); 1050 1051 lpfc_can_disctmo(vport); 1052 1053 /* turn on Link Attention interrupts */ 1054 1055 spin_lock_irq(&phba->hbalock); 1056 psli->sli_flag |= LPFC_PROCESS_LA; 1057 control = readl(phba->HCregaddr); 1058 control |= HC_LAINT_ENA; 1059 writel(control, phba->HCregaddr); 1060 readl(phba->HCregaddr); /* flush */ 1061 spin_unlock_irq(&phba->hbalock); 1062 1063 return; 1064 } 1065 1066 1067 static void 1068 lpfc_mbx_cmpl_local_config_link(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 1069 { 1070 struct lpfc_vport *vport = pmb->vport; 1071 1072 if (pmb->u.mb.mbxStatus) 1073 goto out; 1074 1075 mempool_free(pmb, phba->mbox_mem_pool); 1076 1077 if (phba->fc_topology == LPFC_TOPOLOGY_LOOP && 1078 vport->fc_flag & FC_PUBLIC_LOOP && 1079 !(vport->fc_flag & FC_LBIT)) { 1080 /* Need to wait for FAN - use discovery timer 1081 * for timeout. port_state is identically 1082 * LPFC_LOCAL_CFG_LINK while waiting for FAN 1083 */ 1084 lpfc_set_disctmo(vport); 1085 return; 1086 } 1087 1088 /* Start discovery by sending a FLOGI. port_state is identically 1089 * LPFC_FLOGI while waiting for FLOGI cmpl 1090 */ 1091 if (vport->port_state != LPFC_FLOGI) 1092 lpfc_initial_flogi(vport); 1093 return; 1094 1095 out: 1096 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX, 1097 "0306 CONFIG_LINK mbxStatus error x%x " 1098 "HBA state x%x\n", 1099 pmb->u.mb.mbxStatus, vport->port_state); 1100 mempool_free(pmb, phba->mbox_mem_pool); 1101 1102 lpfc_linkdown(phba); 1103 1104 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY, 1105 "0200 CONFIG_LINK bad hba state x%x\n", 1106 vport->port_state); 1107 1108 lpfc_issue_clear_la(phba, vport); 1109 return; 1110 } 1111 1112 /** 1113 * lpfc_sli4_clear_fcf_rr_bmask 1114 * @phba pointer to the struct lpfc_hba for this port. 1115 * This fucnction resets the round robin bit mask and clears the 1116 * fcf priority list. The list deletions are done while holding the 1117 * hbalock. The ON_LIST flag and the FLOGI_FAILED flags are cleared 1118 * from the lpfc_fcf_pri record. 1119 **/ 1120 void 1121 lpfc_sli4_clear_fcf_rr_bmask(struct lpfc_hba *phba) 1122 { 1123 struct lpfc_fcf_pri *fcf_pri; 1124 struct lpfc_fcf_pri *next_fcf_pri; 1125 memset(phba->fcf.fcf_rr_bmask, 0, sizeof(*phba->fcf.fcf_rr_bmask)); 1126 spin_lock_irq(&phba->hbalock); 1127 list_for_each_entry_safe(fcf_pri, next_fcf_pri, 1128 &phba->fcf.fcf_pri_list, list) { 1129 list_del_init(&fcf_pri->list); 1130 fcf_pri->fcf_rec.flag = 0; 1131 } 1132 spin_unlock_irq(&phba->hbalock); 1133 } 1134 static void 1135 lpfc_mbx_cmpl_reg_fcfi(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq) 1136 { 1137 struct lpfc_vport *vport = mboxq->vport; 1138 1139 if (mboxq->u.mb.mbxStatus) { 1140 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX, 1141 "2017 REG_FCFI mbxStatus error x%x " 1142 "HBA state x%x\n", 1143 mboxq->u.mb.mbxStatus, vport->port_state); 1144 goto fail_out; 1145 } 1146 1147 /* Start FCoE discovery by sending a FLOGI. */ 1148 phba->fcf.fcfi = bf_get(lpfc_reg_fcfi_fcfi, &mboxq->u.mqe.un.reg_fcfi); 1149 /* Set the FCFI registered flag */ 1150 spin_lock_irq(&phba->hbalock); 1151 phba->fcf.fcf_flag |= FCF_REGISTERED; 1152 spin_unlock_irq(&phba->hbalock); 1153 1154 /* If there is a pending FCoE event, restart FCF table scan. */ 1155 if ((!(phba->hba_flag & FCF_RR_INPROG)) && 1156 lpfc_check_pending_fcoe_event(phba, LPFC_UNREG_FCF)) 1157 goto fail_out; 1158 1159 /* Mark successful completion of FCF table scan */ 1160 spin_lock_irq(&phba->hbalock); 1161 phba->fcf.fcf_flag |= (FCF_SCAN_DONE | FCF_IN_USE); 1162 phba->hba_flag &= ~FCF_TS_INPROG; 1163 if (vport->port_state != LPFC_FLOGI) { 1164 phba->hba_flag |= FCF_RR_INPROG; 1165 spin_unlock_irq(&phba->hbalock); 1166 lpfc_issue_init_vfi(vport); 1167 goto out; 1168 } 1169 spin_unlock_irq(&phba->hbalock); 1170 goto out; 1171 1172 fail_out: 1173 spin_lock_irq(&phba->hbalock); 1174 phba->hba_flag &= ~FCF_RR_INPROG; 1175 spin_unlock_irq(&phba->hbalock); 1176 out: 1177 mempool_free(mboxq, phba->mbox_mem_pool); 1178 } 1179 1180 /** 1181 * lpfc_fab_name_match - Check if the fcf fabric name match. 1182 * @fab_name: pointer to fabric name. 1183 * @new_fcf_record: pointer to fcf record. 1184 * 1185 * This routine compare the fcf record's fabric name with provided 1186 * fabric name. If the fabric name are identical this function 1187 * returns 1 else return 0. 1188 **/ 1189 static uint32_t 1190 lpfc_fab_name_match(uint8_t *fab_name, struct fcf_record *new_fcf_record) 1191 { 1192 if (fab_name[0] != bf_get(lpfc_fcf_record_fab_name_0, new_fcf_record)) 1193 return 0; 1194 if (fab_name[1] != bf_get(lpfc_fcf_record_fab_name_1, new_fcf_record)) 1195 return 0; 1196 if (fab_name[2] != bf_get(lpfc_fcf_record_fab_name_2, new_fcf_record)) 1197 return 0; 1198 if (fab_name[3] != bf_get(lpfc_fcf_record_fab_name_3, new_fcf_record)) 1199 return 0; 1200 if (fab_name[4] != bf_get(lpfc_fcf_record_fab_name_4, new_fcf_record)) 1201 return 0; 1202 if (fab_name[5] != bf_get(lpfc_fcf_record_fab_name_5, new_fcf_record)) 1203 return 0; 1204 if (fab_name[6] != bf_get(lpfc_fcf_record_fab_name_6, new_fcf_record)) 1205 return 0; 1206 if (fab_name[7] != bf_get(lpfc_fcf_record_fab_name_7, new_fcf_record)) 1207 return 0; 1208 return 1; 1209 } 1210 1211 /** 1212 * lpfc_sw_name_match - Check if the fcf switch name match. 1213 * @fab_name: pointer to fabric name. 1214 * @new_fcf_record: pointer to fcf record. 1215 * 1216 * This routine compare the fcf record's switch name with provided 1217 * switch name. If the switch name are identical this function 1218 * returns 1 else return 0. 1219 **/ 1220 static uint32_t 1221 lpfc_sw_name_match(uint8_t *sw_name, struct fcf_record *new_fcf_record) 1222 { 1223 if (sw_name[0] != bf_get(lpfc_fcf_record_switch_name_0, new_fcf_record)) 1224 return 0; 1225 if (sw_name[1] != bf_get(lpfc_fcf_record_switch_name_1, new_fcf_record)) 1226 return 0; 1227 if (sw_name[2] != bf_get(lpfc_fcf_record_switch_name_2, new_fcf_record)) 1228 return 0; 1229 if (sw_name[3] != bf_get(lpfc_fcf_record_switch_name_3, new_fcf_record)) 1230 return 0; 1231 if (sw_name[4] != bf_get(lpfc_fcf_record_switch_name_4, new_fcf_record)) 1232 return 0; 1233 if (sw_name[5] != bf_get(lpfc_fcf_record_switch_name_5, new_fcf_record)) 1234 return 0; 1235 if (sw_name[6] != bf_get(lpfc_fcf_record_switch_name_6, new_fcf_record)) 1236 return 0; 1237 if (sw_name[7] != bf_get(lpfc_fcf_record_switch_name_7, new_fcf_record)) 1238 return 0; 1239 return 1; 1240 } 1241 1242 /** 1243 * lpfc_mac_addr_match - Check if the fcf mac address match. 1244 * @mac_addr: pointer to mac address. 1245 * @new_fcf_record: pointer to fcf record. 1246 * 1247 * This routine compare the fcf record's mac address with HBA's 1248 * FCF mac address. If the mac addresses are identical this function 1249 * returns 1 else return 0. 1250 **/ 1251 static uint32_t 1252 lpfc_mac_addr_match(uint8_t *mac_addr, struct fcf_record *new_fcf_record) 1253 { 1254 if (mac_addr[0] != bf_get(lpfc_fcf_record_mac_0, new_fcf_record)) 1255 return 0; 1256 if (mac_addr[1] != bf_get(lpfc_fcf_record_mac_1, new_fcf_record)) 1257 return 0; 1258 if (mac_addr[2] != bf_get(lpfc_fcf_record_mac_2, new_fcf_record)) 1259 return 0; 1260 if (mac_addr[3] != bf_get(lpfc_fcf_record_mac_3, new_fcf_record)) 1261 return 0; 1262 if (mac_addr[4] != bf_get(lpfc_fcf_record_mac_4, new_fcf_record)) 1263 return 0; 1264 if (mac_addr[5] != bf_get(lpfc_fcf_record_mac_5, new_fcf_record)) 1265 return 0; 1266 return 1; 1267 } 1268 1269 static bool 1270 lpfc_vlan_id_match(uint16_t curr_vlan_id, uint16_t new_vlan_id) 1271 { 1272 return (curr_vlan_id == new_vlan_id); 1273 } 1274 1275 /** 1276 * lpfc_update_fcf_record - Update driver fcf record 1277 * __lpfc_update_fcf_record_pri - update the lpfc_fcf_pri record. 1278 * @phba: pointer to lpfc hba data structure. 1279 * @fcf_index: Index for the lpfc_fcf_record. 1280 * @new_fcf_record: pointer to hba fcf record. 1281 * 1282 * This routine updates the driver FCF priority record from the new HBA FCF 1283 * record. This routine is called with the host lock held. 1284 **/ 1285 static void 1286 __lpfc_update_fcf_record_pri(struct lpfc_hba *phba, uint16_t fcf_index, 1287 struct fcf_record *new_fcf_record 1288 ) 1289 { 1290 struct lpfc_fcf_pri *fcf_pri; 1291 1292 fcf_pri = &phba->fcf.fcf_pri[fcf_index]; 1293 fcf_pri->fcf_rec.fcf_index = fcf_index; 1294 /* FCF record priority */ 1295 fcf_pri->fcf_rec.priority = new_fcf_record->fip_priority; 1296 1297 } 1298 1299 /** 1300 * lpfc_copy_fcf_record - Copy fcf information to lpfc_hba. 1301 * @fcf: pointer to driver fcf record. 1302 * @new_fcf_record: pointer to fcf record. 1303 * 1304 * This routine copies the FCF information from the FCF 1305 * record to lpfc_hba data structure. 1306 **/ 1307 static void 1308 lpfc_copy_fcf_record(struct lpfc_fcf_rec *fcf_rec, 1309 struct fcf_record *new_fcf_record) 1310 { 1311 /* Fabric name */ 1312 fcf_rec->fabric_name[0] = 1313 bf_get(lpfc_fcf_record_fab_name_0, new_fcf_record); 1314 fcf_rec->fabric_name[1] = 1315 bf_get(lpfc_fcf_record_fab_name_1, new_fcf_record); 1316 fcf_rec->fabric_name[2] = 1317 bf_get(lpfc_fcf_record_fab_name_2, new_fcf_record); 1318 fcf_rec->fabric_name[3] = 1319 bf_get(lpfc_fcf_record_fab_name_3, new_fcf_record); 1320 fcf_rec->fabric_name[4] = 1321 bf_get(lpfc_fcf_record_fab_name_4, new_fcf_record); 1322 fcf_rec->fabric_name[5] = 1323 bf_get(lpfc_fcf_record_fab_name_5, new_fcf_record); 1324 fcf_rec->fabric_name[6] = 1325 bf_get(lpfc_fcf_record_fab_name_6, new_fcf_record); 1326 fcf_rec->fabric_name[7] = 1327 bf_get(lpfc_fcf_record_fab_name_7, new_fcf_record); 1328 /* Mac address */ 1329 fcf_rec->mac_addr[0] = bf_get(lpfc_fcf_record_mac_0, new_fcf_record); 1330 fcf_rec->mac_addr[1] = bf_get(lpfc_fcf_record_mac_1, new_fcf_record); 1331 fcf_rec->mac_addr[2] = bf_get(lpfc_fcf_record_mac_2, new_fcf_record); 1332 fcf_rec->mac_addr[3] = bf_get(lpfc_fcf_record_mac_3, new_fcf_record); 1333 fcf_rec->mac_addr[4] = bf_get(lpfc_fcf_record_mac_4, new_fcf_record); 1334 fcf_rec->mac_addr[5] = bf_get(lpfc_fcf_record_mac_5, new_fcf_record); 1335 /* FCF record index */ 1336 fcf_rec->fcf_indx = bf_get(lpfc_fcf_record_fcf_index, new_fcf_record); 1337 /* FCF record priority */ 1338 fcf_rec->priority = new_fcf_record->fip_priority; 1339 /* Switch name */ 1340 fcf_rec->switch_name[0] = 1341 bf_get(lpfc_fcf_record_switch_name_0, new_fcf_record); 1342 fcf_rec->switch_name[1] = 1343 bf_get(lpfc_fcf_record_switch_name_1, new_fcf_record); 1344 fcf_rec->switch_name[2] = 1345 bf_get(lpfc_fcf_record_switch_name_2, new_fcf_record); 1346 fcf_rec->switch_name[3] = 1347 bf_get(lpfc_fcf_record_switch_name_3, new_fcf_record); 1348 fcf_rec->switch_name[4] = 1349 bf_get(lpfc_fcf_record_switch_name_4, new_fcf_record); 1350 fcf_rec->switch_name[5] = 1351 bf_get(lpfc_fcf_record_switch_name_5, new_fcf_record); 1352 fcf_rec->switch_name[6] = 1353 bf_get(lpfc_fcf_record_switch_name_6, new_fcf_record); 1354 fcf_rec->switch_name[7] = 1355 bf_get(lpfc_fcf_record_switch_name_7, new_fcf_record); 1356 } 1357 1358 /** 1359 * lpfc_update_fcf_record - Update driver fcf record 1360 * @phba: pointer to lpfc hba data structure. 1361 * @fcf_rec: pointer to driver fcf record. 1362 * @new_fcf_record: pointer to hba fcf record. 1363 * @addr_mode: address mode to be set to the driver fcf record. 1364 * @vlan_id: vlan tag to be set to the driver fcf record. 1365 * @flag: flag bits to be set to the driver fcf record. 1366 * 1367 * This routine updates the driver FCF record from the new HBA FCF record 1368 * together with the address mode, vlan_id, and other informations. This 1369 * routine is called with the host lock held. 1370 **/ 1371 static void 1372 __lpfc_update_fcf_record(struct lpfc_hba *phba, struct lpfc_fcf_rec *fcf_rec, 1373 struct fcf_record *new_fcf_record, uint32_t addr_mode, 1374 uint16_t vlan_id, uint32_t flag) 1375 { 1376 /* Copy the fields from the HBA's FCF record */ 1377 lpfc_copy_fcf_record(fcf_rec, new_fcf_record); 1378 /* Update other fields of driver FCF record */ 1379 fcf_rec->addr_mode = addr_mode; 1380 fcf_rec->vlan_id = vlan_id; 1381 fcf_rec->flag |= (flag | RECORD_VALID); 1382 __lpfc_update_fcf_record_pri(phba, 1383 bf_get(lpfc_fcf_record_fcf_index, new_fcf_record), 1384 new_fcf_record); 1385 } 1386 1387 /** 1388 * lpfc_register_fcf - Register the FCF with hba. 1389 * @phba: pointer to lpfc hba data structure. 1390 * 1391 * This routine issues a register fcfi mailbox command to register 1392 * the fcf with HBA. 1393 **/ 1394 static void 1395 lpfc_register_fcf(struct lpfc_hba *phba) 1396 { 1397 LPFC_MBOXQ_t *fcf_mbxq; 1398 int rc; 1399 1400 spin_lock_irq(&phba->hbalock); 1401 /* If the FCF is not available do nothing. */ 1402 if (!(phba->fcf.fcf_flag & FCF_AVAILABLE)) { 1403 phba->hba_flag &= ~(FCF_TS_INPROG | FCF_RR_INPROG); 1404 spin_unlock_irq(&phba->hbalock); 1405 return; 1406 } 1407 1408 /* The FCF is already registered, start discovery */ 1409 if (phba->fcf.fcf_flag & FCF_REGISTERED) { 1410 phba->fcf.fcf_flag |= (FCF_SCAN_DONE | FCF_IN_USE); 1411 phba->hba_flag &= ~FCF_TS_INPROG; 1412 if (phba->pport->port_state != LPFC_FLOGI) { 1413 phba->hba_flag |= FCF_RR_INPROG; 1414 spin_unlock_irq(&phba->hbalock); 1415 lpfc_initial_flogi(phba->pport); 1416 return; 1417 } 1418 spin_unlock_irq(&phba->hbalock); 1419 return; 1420 } 1421 spin_unlock_irq(&phba->hbalock); 1422 1423 fcf_mbxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 1424 if (!fcf_mbxq) { 1425 spin_lock_irq(&phba->hbalock); 1426 phba->hba_flag &= ~(FCF_TS_INPROG | FCF_RR_INPROG); 1427 spin_unlock_irq(&phba->hbalock); 1428 return; 1429 } 1430 1431 lpfc_reg_fcfi(phba, fcf_mbxq); 1432 fcf_mbxq->vport = phba->pport; 1433 fcf_mbxq->mbox_cmpl = lpfc_mbx_cmpl_reg_fcfi; 1434 rc = lpfc_sli_issue_mbox(phba, fcf_mbxq, MBX_NOWAIT); 1435 if (rc == MBX_NOT_FINISHED) { 1436 spin_lock_irq(&phba->hbalock); 1437 phba->hba_flag &= ~(FCF_TS_INPROG | FCF_RR_INPROG); 1438 spin_unlock_irq(&phba->hbalock); 1439 mempool_free(fcf_mbxq, phba->mbox_mem_pool); 1440 } 1441 1442 return; 1443 } 1444 1445 /** 1446 * lpfc_match_fcf_conn_list - Check if the FCF record can be used for discovery. 1447 * @phba: pointer to lpfc hba data structure. 1448 * @new_fcf_record: pointer to fcf record. 1449 * @boot_flag: Indicates if this record used by boot bios. 1450 * @addr_mode: The address mode to be used by this FCF 1451 * @vlan_id: The vlan id to be used as vlan tagging by this FCF. 1452 * 1453 * This routine compare the fcf record with connect list obtained from the 1454 * config region to decide if this FCF can be used for SAN discovery. It returns 1455 * 1 if this record can be used for SAN discovery else return zero. If this FCF 1456 * record can be used for SAN discovery, the boot_flag will indicate if this FCF 1457 * is used by boot bios and addr_mode will indicate the addressing mode to be 1458 * used for this FCF when the function returns. 1459 * If the FCF record need to be used with a particular vlan id, the vlan is 1460 * set in the vlan_id on return of the function. If not VLAN tagging need to 1461 * be used with the FCF vlan_id will be set to LPFC_FCOE_NULL_VID; 1462 **/ 1463 static int 1464 lpfc_match_fcf_conn_list(struct lpfc_hba *phba, 1465 struct fcf_record *new_fcf_record, 1466 uint32_t *boot_flag, uint32_t *addr_mode, 1467 uint16_t *vlan_id) 1468 { 1469 struct lpfc_fcf_conn_entry *conn_entry; 1470 int i, j, fcf_vlan_id = 0; 1471 1472 /* Find the lowest VLAN id in the FCF record */ 1473 for (i = 0; i < 512; i++) { 1474 if (new_fcf_record->vlan_bitmap[i]) { 1475 fcf_vlan_id = i * 8; 1476 j = 0; 1477 while (!((new_fcf_record->vlan_bitmap[i] >> j) & 1)) { 1478 j++; 1479 fcf_vlan_id++; 1480 } 1481 break; 1482 } 1483 } 1484 1485 /* If FCF not available return 0 */ 1486 if (!bf_get(lpfc_fcf_record_fcf_avail, new_fcf_record) || 1487 !bf_get(lpfc_fcf_record_fcf_valid, new_fcf_record)) 1488 return 0; 1489 1490 if (!(phba->hba_flag & HBA_FIP_SUPPORT)) { 1491 *boot_flag = 0; 1492 *addr_mode = bf_get(lpfc_fcf_record_mac_addr_prov, 1493 new_fcf_record); 1494 if (phba->valid_vlan) 1495 *vlan_id = phba->vlan_id; 1496 else 1497 *vlan_id = LPFC_FCOE_NULL_VID; 1498 return 1; 1499 } 1500 1501 /* 1502 * If there are no FCF connection table entry, driver connect to all 1503 * FCFs. 1504 */ 1505 if (list_empty(&phba->fcf_conn_rec_list)) { 1506 *boot_flag = 0; 1507 *addr_mode = bf_get(lpfc_fcf_record_mac_addr_prov, 1508 new_fcf_record); 1509 1510 /* 1511 * When there are no FCF connect entries, use driver's default 1512 * addressing mode - FPMA. 1513 */ 1514 if (*addr_mode & LPFC_FCF_FPMA) 1515 *addr_mode = LPFC_FCF_FPMA; 1516 1517 /* If FCF record report a vlan id use that vlan id */ 1518 if (fcf_vlan_id) 1519 *vlan_id = fcf_vlan_id; 1520 else 1521 *vlan_id = LPFC_FCOE_NULL_VID; 1522 return 1; 1523 } 1524 1525 list_for_each_entry(conn_entry, 1526 &phba->fcf_conn_rec_list, list) { 1527 if (!(conn_entry->conn_rec.flags & FCFCNCT_VALID)) 1528 continue; 1529 1530 if ((conn_entry->conn_rec.flags & FCFCNCT_FBNM_VALID) && 1531 !lpfc_fab_name_match(conn_entry->conn_rec.fabric_name, 1532 new_fcf_record)) 1533 continue; 1534 if ((conn_entry->conn_rec.flags & FCFCNCT_SWNM_VALID) && 1535 !lpfc_sw_name_match(conn_entry->conn_rec.switch_name, 1536 new_fcf_record)) 1537 continue; 1538 if (conn_entry->conn_rec.flags & FCFCNCT_VLAN_VALID) { 1539 /* 1540 * If the vlan bit map does not have the bit set for the 1541 * vlan id to be used, then it is not a match. 1542 */ 1543 if (!(new_fcf_record->vlan_bitmap 1544 [conn_entry->conn_rec.vlan_tag / 8] & 1545 (1 << (conn_entry->conn_rec.vlan_tag % 8)))) 1546 continue; 1547 } 1548 1549 /* 1550 * If connection record does not support any addressing mode, 1551 * skip the FCF record. 1552 */ 1553 if (!(bf_get(lpfc_fcf_record_mac_addr_prov, new_fcf_record) 1554 & (LPFC_FCF_FPMA | LPFC_FCF_SPMA))) 1555 continue; 1556 1557 /* 1558 * Check if the connection record specifies a required 1559 * addressing mode. 1560 */ 1561 if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) && 1562 !(conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED)) { 1563 1564 /* 1565 * If SPMA required but FCF not support this continue. 1566 */ 1567 if ((conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) && 1568 !(bf_get(lpfc_fcf_record_mac_addr_prov, 1569 new_fcf_record) & LPFC_FCF_SPMA)) 1570 continue; 1571 1572 /* 1573 * If FPMA required but FCF not support this continue. 1574 */ 1575 if (!(conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) && 1576 !(bf_get(lpfc_fcf_record_mac_addr_prov, 1577 new_fcf_record) & LPFC_FCF_FPMA)) 1578 continue; 1579 } 1580 1581 /* 1582 * This fcf record matches filtering criteria. 1583 */ 1584 if (conn_entry->conn_rec.flags & FCFCNCT_BOOT) 1585 *boot_flag = 1; 1586 else 1587 *boot_flag = 0; 1588 1589 /* 1590 * If user did not specify any addressing mode, or if the 1591 * preferred addressing mode specified by user is not supported 1592 * by FCF, allow fabric to pick the addressing mode. 1593 */ 1594 *addr_mode = bf_get(lpfc_fcf_record_mac_addr_prov, 1595 new_fcf_record); 1596 /* 1597 * If the user specified a required address mode, assign that 1598 * address mode 1599 */ 1600 if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) && 1601 (!(conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED))) 1602 *addr_mode = (conn_entry->conn_rec.flags & 1603 FCFCNCT_AM_SPMA) ? 1604 LPFC_FCF_SPMA : LPFC_FCF_FPMA; 1605 /* 1606 * If the user specified a preferred address mode, use the 1607 * addr mode only if FCF support the addr_mode. 1608 */ 1609 else if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) && 1610 (conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED) && 1611 (conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) && 1612 (*addr_mode & LPFC_FCF_SPMA)) 1613 *addr_mode = LPFC_FCF_SPMA; 1614 else if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) && 1615 (conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED) && 1616 !(conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) && 1617 (*addr_mode & LPFC_FCF_FPMA)) 1618 *addr_mode = LPFC_FCF_FPMA; 1619 1620 /* If matching connect list has a vlan id, use it */ 1621 if (conn_entry->conn_rec.flags & FCFCNCT_VLAN_VALID) 1622 *vlan_id = conn_entry->conn_rec.vlan_tag; 1623 /* 1624 * If no vlan id is specified in connect list, use the vlan id 1625 * in the FCF record 1626 */ 1627 else if (fcf_vlan_id) 1628 *vlan_id = fcf_vlan_id; 1629 else 1630 *vlan_id = LPFC_FCOE_NULL_VID; 1631 1632 return 1; 1633 } 1634 1635 return 0; 1636 } 1637 1638 /** 1639 * lpfc_check_pending_fcoe_event - Check if there is pending fcoe event. 1640 * @phba: pointer to lpfc hba data structure. 1641 * @unreg_fcf: Unregister FCF if FCF table need to be re-scaned. 1642 * 1643 * This function check if there is any fcoe event pending while driver 1644 * scan FCF entries. If there is any pending event, it will restart the 1645 * FCF saning and return 1 else return 0. 1646 */ 1647 int 1648 lpfc_check_pending_fcoe_event(struct lpfc_hba *phba, uint8_t unreg_fcf) 1649 { 1650 /* 1651 * If the Link is up and no FCoE events while in the 1652 * FCF discovery, no need to restart FCF discovery. 1653 */ 1654 if ((phba->link_state >= LPFC_LINK_UP) && 1655 (phba->fcoe_eventtag == phba->fcoe_eventtag_at_fcf_scan)) 1656 return 0; 1657 1658 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 1659 "2768 Pending link or FCF event during current " 1660 "handling of the previous event: link_state:x%x, " 1661 "evt_tag_at_scan:x%x, evt_tag_current:x%x\n", 1662 phba->link_state, phba->fcoe_eventtag_at_fcf_scan, 1663 phba->fcoe_eventtag); 1664 1665 spin_lock_irq(&phba->hbalock); 1666 phba->fcf.fcf_flag &= ~FCF_AVAILABLE; 1667 spin_unlock_irq(&phba->hbalock); 1668 1669 if (phba->link_state >= LPFC_LINK_UP) { 1670 lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY, 1671 "2780 Restart FCF table scan due to " 1672 "pending FCF event:evt_tag_at_scan:x%x, " 1673 "evt_tag_current:x%x\n", 1674 phba->fcoe_eventtag_at_fcf_scan, 1675 phba->fcoe_eventtag); 1676 lpfc_sli4_fcf_scan_read_fcf_rec(phba, LPFC_FCOE_FCF_GET_FIRST); 1677 } else { 1678 /* 1679 * Do not continue FCF discovery and clear FCF_TS_INPROG 1680 * flag 1681 */ 1682 lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY, 1683 "2833 Stop FCF discovery process due to link " 1684 "state change (x%x)\n", phba->link_state); 1685 spin_lock_irq(&phba->hbalock); 1686 phba->hba_flag &= ~(FCF_TS_INPROG | FCF_RR_INPROG); 1687 phba->fcf.fcf_flag &= ~(FCF_REDISC_FOV | FCF_DISCOVERY); 1688 spin_unlock_irq(&phba->hbalock); 1689 } 1690 1691 /* Unregister the currently registered FCF if required */ 1692 if (unreg_fcf) { 1693 spin_lock_irq(&phba->hbalock); 1694 phba->fcf.fcf_flag &= ~FCF_REGISTERED; 1695 spin_unlock_irq(&phba->hbalock); 1696 lpfc_sli4_unregister_fcf(phba); 1697 } 1698 return 1; 1699 } 1700 1701 /** 1702 * lpfc_sli4_new_fcf_random_select - Randomly select an eligible new fcf record 1703 * @phba: pointer to lpfc hba data structure. 1704 * @fcf_cnt: number of eligible fcf record seen so far. 1705 * 1706 * This function makes an running random selection decision on FCF record to 1707 * use through a sequence of @fcf_cnt eligible FCF records with equal 1708 * probability. To perform integer manunipulation of random numbers with 1709 * size unit32_t, the lower 16 bits of the 32-bit random number returned 1710 * from random32() are taken as the random random number generated. 1711 * 1712 * Returns true when outcome is for the newly read FCF record should be 1713 * chosen; otherwise, return false when outcome is for keeping the previously 1714 * chosen FCF record. 1715 **/ 1716 static bool 1717 lpfc_sli4_new_fcf_random_select(struct lpfc_hba *phba, uint32_t fcf_cnt) 1718 { 1719 uint32_t rand_num; 1720 1721 /* Get 16-bit uniform random number */ 1722 rand_num = (0xFFFF & random32()); 1723 1724 /* Decision with probability 1/fcf_cnt */ 1725 if ((fcf_cnt * rand_num) < 0xFFFF) 1726 return true; 1727 else 1728 return false; 1729 } 1730 1731 /** 1732 * lpfc_sli4_fcf_rec_mbox_parse - Parse read_fcf mbox command. 1733 * @phba: pointer to lpfc hba data structure. 1734 * @mboxq: pointer to mailbox object. 1735 * @next_fcf_index: pointer to holder of next fcf index. 1736 * 1737 * This routine parses the non-embedded fcf mailbox command by performing the 1738 * necessarily error checking, non-embedded read FCF record mailbox command 1739 * SGE parsing, and endianness swapping. 1740 * 1741 * Returns the pointer to the new FCF record in the non-embedded mailbox 1742 * command DMA memory if successfully, other NULL. 1743 */ 1744 static struct fcf_record * 1745 lpfc_sli4_fcf_rec_mbox_parse(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq, 1746 uint16_t *next_fcf_index) 1747 { 1748 void *virt_addr; 1749 dma_addr_t phys_addr; 1750 struct lpfc_mbx_sge sge; 1751 struct lpfc_mbx_read_fcf_tbl *read_fcf; 1752 uint32_t shdr_status, shdr_add_status; 1753 union lpfc_sli4_cfg_shdr *shdr; 1754 struct fcf_record *new_fcf_record; 1755 1756 /* Get the first SGE entry from the non-embedded DMA memory. This 1757 * routine only uses a single SGE. 1758 */ 1759 lpfc_sli4_mbx_sge_get(mboxq, 0, &sge); 1760 phys_addr = getPaddr(sge.pa_hi, sge.pa_lo); 1761 if (unlikely(!mboxq->sge_array)) { 1762 lpfc_printf_log(phba, KERN_ERR, LOG_MBOX, 1763 "2524 Failed to get the non-embedded SGE " 1764 "virtual address\n"); 1765 return NULL; 1766 } 1767 virt_addr = mboxq->sge_array->addr[0]; 1768 1769 shdr = (union lpfc_sli4_cfg_shdr *)virt_addr; 1770 shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response); 1771 shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response); 1772 if (shdr_status || shdr_add_status) { 1773 if (shdr_status == STATUS_FCF_TABLE_EMPTY) 1774 lpfc_printf_log(phba, KERN_ERR, LOG_FIP, 1775 "2726 READ_FCF_RECORD Indicates empty " 1776 "FCF table.\n"); 1777 else 1778 lpfc_printf_log(phba, KERN_ERR, LOG_FIP, 1779 "2521 READ_FCF_RECORD mailbox failed " 1780 "with status x%x add_status x%x, " 1781 "mbx\n", shdr_status, shdr_add_status); 1782 return NULL; 1783 } 1784 1785 /* Interpreting the returned information of the FCF record */ 1786 read_fcf = (struct lpfc_mbx_read_fcf_tbl *)virt_addr; 1787 lpfc_sli_pcimem_bcopy(read_fcf, read_fcf, 1788 sizeof(struct lpfc_mbx_read_fcf_tbl)); 1789 *next_fcf_index = bf_get(lpfc_mbx_read_fcf_tbl_nxt_vindx, read_fcf); 1790 new_fcf_record = (struct fcf_record *)(virt_addr + 1791 sizeof(struct lpfc_mbx_read_fcf_tbl)); 1792 lpfc_sli_pcimem_bcopy(new_fcf_record, new_fcf_record, 1793 offsetof(struct fcf_record, vlan_bitmap)); 1794 new_fcf_record->word137 = le32_to_cpu(new_fcf_record->word137); 1795 new_fcf_record->word138 = le32_to_cpu(new_fcf_record->word138); 1796 1797 return new_fcf_record; 1798 } 1799 1800 /** 1801 * lpfc_sli4_log_fcf_record_info - Log the information of a fcf record 1802 * @phba: pointer to lpfc hba data structure. 1803 * @fcf_record: pointer to the fcf record. 1804 * @vlan_id: the lowest vlan identifier associated to this fcf record. 1805 * @next_fcf_index: the index to the next fcf record in hba's fcf table. 1806 * 1807 * This routine logs the detailed FCF record if the LOG_FIP loggin is 1808 * enabled. 1809 **/ 1810 static void 1811 lpfc_sli4_log_fcf_record_info(struct lpfc_hba *phba, 1812 struct fcf_record *fcf_record, 1813 uint16_t vlan_id, 1814 uint16_t next_fcf_index) 1815 { 1816 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 1817 "2764 READ_FCF_RECORD:\n" 1818 "\tFCF_Index : x%x\n" 1819 "\tFCF_Avail : x%x\n" 1820 "\tFCF_Valid : x%x\n" 1821 "\tFIP_Priority : x%x\n" 1822 "\tMAC_Provider : x%x\n" 1823 "\tLowest VLANID : x%x\n" 1824 "\tFCF_MAC Addr : x%x:%x:%x:%x:%x:%x\n" 1825 "\tFabric_Name : x%x:%x:%x:%x:%x:%x:%x:%x\n" 1826 "\tSwitch_Name : x%x:%x:%x:%x:%x:%x:%x:%x\n" 1827 "\tNext_FCF_Index: x%x\n", 1828 bf_get(lpfc_fcf_record_fcf_index, fcf_record), 1829 bf_get(lpfc_fcf_record_fcf_avail, fcf_record), 1830 bf_get(lpfc_fcf_record_fcf_valid, fcf_record), 1831 fcf_record->fip_priority, 1832 bf_get(lpfc_fcf_record_mac_addr_prov, fcf_record), 1833 vlan_id, 1834 bf_get(lpfc_fcf_record_mac_0, fcf_record), 1835 bf_get(lpfc_fcf_record_mac_1, fcf_record), 1836 bf_get(lpfc_fcf_record_mac_2, fcf_record), 1837 bf_get(lpfc_fcf_record_mac_3, fcf_record), 1838 bf_get(lpfc_fcf_record_mac_4, fcf_record), 1839 bf_get(lpfc_fcf_record_mac_5, fcf_record), 1840 bf_get(lpfc_fcf_record_fab_name_0, fcf_record), 1841 bf_get(lpfc_fcf_record_fab_name_1, fcf_record), 1842 bf_get(lpfc_fcf_record_fab_name_2, fcf_record), 1843 bf_get(lpfc_fcf_record_fab_name_3, fcf_record), 1844 bf_get(lpfc_fcf_record_fab_name_4, fcf_record), 1845 bf_get(lpfc_fcf_record_fab_name_5, fcf_record), 1846 bf_get(lpfc_fcf_record_fab_name_6, fcf_record), 1847 bf_get(lpfc_fcf_record_fab_name_7, fcf_record), 1848 bf_get(lpfc_fcf_record_switch_name_0, fcf_record), 1849 bf_get(lpfc_fcf_record_switch_name_1, fcf_record), 1850 bf_get(lpfc_fcf_record_switch_name_2, fcf_record), 1851 bf_get(lpfc_fcf_record_switch_name_3, fcf_record), 1852 bf_get(lpfc_fcf_record_switch_name_4, fcf_record), 1853 bf_get(lpfc_fcf_record_switch_name_5, fcf_record), 1854 bf_get(lpfc_fcf_record_switch_name_6, fcf_record), 1855 bf_get(lpfc_fcf_record_switch_name_7, fcf_record), 1856 next_fcf_index); 1857 } 1858 1859 /** 1860 lpfc_sli4_fcf_record_match - testing new FCF record for matching existing FCF 1861 * @phba: pointer to lpfc hba data structure. 1862 * @fcf_rec: pointer to an existing FCF record. 1863 * @new_fcf_record: pointer to a new FCF record. 1864 * @new_vlan_id: vlan id from the new FCF record. 1865 * 1866 * This function performs matching test of a new FCF record against an existing 1867 * FCF record. If the new_vlan_id passed in is LPFC_FCOE_IGNORE_VID, vlan id 1868 * will not be used as part of the FCF record matching criteria. 1869 * 1870 * Returns true if all the fields matching, otherwise returns false. 1871 */ 1872 static bool 1873 lpfc_sli4_fcf_record_match(struct lpfc_hba *phba, 1874 struct lpfc_fcf_rec *fcf_rec, 1875 struct fcf_record *new_fcf_record, 1876 uint16_t new_vlan_id) 1877 { 1878 if (new_vlan_id != LPFC_FCOE_IGNORE_VID) 1879 if (!lpfc_vlan_id_match(fcf_rec->vlan_id, new_vlan_id)) 1880 return false; 1881 if (!lpfc_mac_addr_match(fcf_rec->mac_addr, new_fcf_record)) 1882 return false; 1883 if (!lpfc_sw_name_match(fcf_rec->switch_name, new_fcf_record)) 1884 return false; 1885 if (!lpfc_fab_name_match(fcf_rec->fabric_name, new_fcf_record)) 1886 return false; 1887 if (fcf_rec->priority != new_fcf_record->fip_priority) 1888 return false; 1889 return true; 1890 } 1891 1892 /** 1893 * lpfc_sli4_fcf_rr_next_proc - processing next roundrobin fcf 1894 * @vport: Pointer to vport object. 1895 * @fcf_index: index to next fcf. 1896 * 1897 * This function processing the roundrobin fcf failover to next fcf index. 1898 * When this function is invoked, there will be a current fcf registered 1899 * for flogi. 1900 * Return: 0 for continue retrying flogi on currently registered fcf; 1901 * 1 for stop flogi on currently registered fcf; 1902 */ 1903 int lpfc_sli4_fcf_rr_next_proc(struct lpfc_vport *vport, uint16_t fcf_index) 1904 { 1905 struct lpfc_hba *phba = vport->phba; 1906 int rc; 1907 1908 if (fcf_index == LPFC_FCOE_FCF_NEXT_NONE) { 1909 spin_lock_irq(&phba->hbalock); 1910 if (phba->hba_flag & HBA_DEVLOSS_TMO) { 1911 spin_unlock_irq(&phba->hbalock); 1912 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 1913 "2872 Devloss tmo with no eligible " 1914 "FCF, unregister in-use FCF (x%x) " 1915 "and rescan FCF table\n", 1916 phba->fcf.current_rec.fcf_indx); 1917 lpfc_unregister_fcf_rescan(phba); 1918 goto stop_flogi_current_fcf; 1919 } 1920 /* Mark the end to FLOGI roundrobin failover */ 1921 phba->hba_flag &= ~FCF_RR_INPROG; 1922 /* Allow action to new fcf asynchronous event */ 1923 phba->fcf.fcf_flag &= ~(FCF_AVAILABLE | FCF_SCAN_DONE); 1924 spin_unlock_irq(&phba->hbalock); 1925 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 1926 "2865 No FCF available, stop roundrobin FCF " 1927 "failover and change port state:x%x/x%x\n", 1928 phba->pport->port_state, LPFC_VPORT_UNKNOWN); 1929 phba->pport->port_state = LPFC_VPORT_UNKNOWN; 1930 goto stop_flogi_current_fcf; 1931 } else { 1932 lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_ELS, 1933 "2794 Try FLOGI roundrobin FCF failover to " 1934 "(x%x)\n", fcf_index); 1935 rc = lpfc_sli4_fcf_rr_read_fcf_rec(phba, fcf_index); 1936 if (rc) 1937 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP | LOG_ELS, 1938 "2761 FLOGI roundrobin FCF failover " 1939 "failed (rc:x%x) to read FCF (x%x)\n", 1940 rc, phba->fcf.current_rec.fcf_indx); 1941 else 1942 goto stop_flogi_current_fcf; 1943 } 1944 return 0; 1945 1946 stop_flogi_current_fcf: 1947 lpfc_can_disctmo(vport); 1948 return 1; 1949 } 1950 1951 /** 1952 * lpfc_sli4_fcf_pri_list_del 1953 * @phba: pointer to lpfc hba data structure. 1954 * @fcf_index the index of the fcf record to delete 1955 * This routine checks the on list flag of the fcf_index to be deleted. 1956 * If it is one the list then it is removed from the list, and the flag 1957 * is cleared. This routine grab the hbalock before removing the fcf 1958 * record from the list. 1959 **/ 1960 static void lpfc_sli4_fcf_pri_list_del(struct lpfc_hba *phba, 1961 uint16_t fcf_index) 1962 { 1963 struct lpfc_fcf_pri *new_fcf_pri; 1964 1965 new_fcf_pri = &phba->fcf.fcf_pri[fcf_index]; 1966 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 1967 "3058 deleting idx x%x pri x%x flg x%x\n", 1968 fcf_index, new_fcf_pri->fcf_rec.priority, 1969 new_fcf_pri->fcf_rec.flag); 1970 spin_lock_irq(&phba->hbalock); 1971 if (new_fcf_pri->fcf_rec.flag & LPFC_FCF_ON_PRI_LIST) { 1972 if (phba->fcf.current_rec.priority == 1973 new_fcf_pri->fcf_rec.priority) 1974 phba->fcf.eligible_fcf_cnt--; 1975 list_del_init(&new_fcf_pri->list); 1976 new_fcf_pri->fcf_rec.flag &= ~LPFC_FCF_ON_PRI_LIST; 1977 } 1978 spin_unlock_irq(&phba->hbalock); 1979 } 1980 1981 /** 1982 * lpfc_sli4_set_fcf_flogi_fail 1983 * @phba: pointer to lpfc hba data structure. 1984 * @fcf_index the index of the fcf record to update 1985 * This routine acquires the hbalock and then set the LPFC_FCF_FLOGI_FAILED 1986 * flag so the the round robin slection for the particular priority level 1987 * will try a different fcf record that does not have this bit set. 1988 * If the fcf record is re-read for any reason this flag is cleared brfore 1989 * adding it to the priority list. 1990 **/ 1991 void 1992 lpfc_sli4_set_fcf_flogi_fail(struct lpfc_hba *phba, uint16_t fcf_index) 1993 { 1994 struct lpfc_fcf_pri *new_fcf_pri; 1995 new_fcf_pri = &phba->fcf.fcf_pri[fcf_index]; 1996 spin_lock_irq(&phba->hbalock); 1997 new_fcf_pri->fcf_rec.flag |= LPFC_FCF_FLOGI_FAILED; 1998 spin_unlock_irq(&phba->hbalock); 1999 } 2000 2001 /** 2002 * lpfc_sli4_fcf_pri_list_add 2003 * @phba: pointer to lpfc hba data structure. 2004 * @fcf_index the index of the fcf record to add 2005 * This routine checks the priority of the fcf_index to be added. 2006 * If it is a lower priority than the current head of the fcf_pri list 2007 * then it is added to the list in the right order. 2008 * If it is the same priority as the current head of the list then it 2009 * is added to the head of the list and its bit in the rr_bmask is set. 2010 * If the fcf_index to be added is of a higher priority than the current 2011 * head of the list then the rr_bmask is cleared, its bit is set in the 2012 * rr_bmask and it is added to the head of the list. 2013 * returns: 2014 * 0=success 1=failure 2015 **/ 2016 int lpfc_sli4_fcf_pri_list_add(struct lpfc_hba *phba, uint16_t fcf_index, 2017 struct fcf_record *new_fcf_record) 2018 { 2019 uint16_t current_fcf_pri; 2020 uint16_t last_index; 2021 struct lpfc_fcf_pri *fcf_pri; 2022 struct lpfc_fcf_pri *next_fcf_pri; 2023 struct lpfc_fcf_pri *new_fcf_pri; 2024 int ret; 2025 2026 new_fcf_pri = &phba->fcf.fcf_pri[fcf_index]; 2027 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2028 "3059 adding idx x%x pri x%x flg x%x\n", 2029 fcf_index, new_fcf_record->fip_priority, 2030 new_fcf_pri->fcf_rec.flag); 2031 spin_lock_irq(&phba->hbalock); 2032 if (new_fcf_pri->fcf_rec.flag & LPFC_FCF_ON_PRI_LIST) 2033 list_del_init(&new_fcf_pri->list); 2034 new_fcf_pri->fcf_rec.fcf_index = fcf_index; 2035 new_fcf_pri->fcf_rec.priority = new_fcf_record->fip_priority; 2036 if (list_empty(&phba->fcf.fcf_pri_list)) { 2037 list_add(&new_fcf_pri->list, &phba->fcf.fcf_pri_list); 2038 ret = lpfc_sli4_fcf_rr_index_set(phba, 2039 new_fcf_pri->fcf_rec.fcf_index); 2040 goto out; 2041 } 2042 2043 last_index = find_first_bit(phba->fcf.fcf_rr_bmask, 2044 LPFC_SLI4_FCF_TBL_INDX_MAX); 2045 if (last_index >= LPFC_SLI4_FCF_TBL_INDX_MAX) { 2046 ret = 0; /* Empty rr list */ 2047 goto out; 2048 } 2049 current_fcf_pri = phba->fcf.fcf_pri[last_index].fcf_rec.priority; 2050 if (new_fcf_pri->fcf_rec.priority <= current_fcf_pri) { 2051 list_add(&new_fcf_pri->list, &phba->fcf.fcf_pri_list); 2052 if (new_fcf_pri->fcf_rec.priority < current_fcf_pri) { 2053 memset(phba->fcf.fcf_rr_bmask, 0, 2054 sizeof(*phba->fcf.fcf_rr_bmask)); 2055 /* fcfs_at_this_priority_level = 1; */ 2056 phba->fcf.eligible_fcf_cnt = 1; 2057 } else 2058 /* fcfs_at_this_priority_level++; */ 2059 phba->fcf.eligible_fcf_cnt++; 2060 ret = lpfc_sli4_fcf_rr_index_set(phba, 2061 new_fcf_pri->fcf_rec.fcf_index); 2062 goto out; 2063 } 2064 2065 list_for_each_entry_safe(fcf_pri, next_fcf_pri, 2066 &phba->fcf.fcf_pri_list, list) { 2067 if (new_fcf_pri->fcf_rec.priority <= 2068 fcf_pri->fcf_rec.priority) { 2069 if (fcf_pri->list.prev == &phba->fcf.fcf_pri_list) 2070 list_add(&new_fcf_pri->list, 2071 &phba->fcf.fcf_pri_list); 2072 else 2073 list_add(&new_fcf_pri->list, 2074 &((struct lpfc_fcf_pri *) 2075 fcf_pri->list.prev)->list); 2076 ret = 0; 2077 goto out; 2078 } else if (fcf_pri->list.next == &phba->fcf.fcf_pri_list 2079 || new_fcf_pri->fcf_rec.priority < 2080 next_fcf_pri->fcf_rec.priority) { 2081 list_add(&new_fcf_pri->list, &fcf_pri->list); 2082 ret = 0; 2083 goto out; 2084 } 2085 if (new_fcf_pri->fcf_rec.priority > fcf_pri->fcf_rec.priority) 2086 continue; 2087 2088 } 2089 ret = 1; 2090 out: 2091 /* we use = instead of |= to clear the FLOGI_FAILED flag. */ 2092 new_fcf_pri->fcf_rec.flag = LPFC_FCF_ON_PRI_LIST; 2093 spin_unlock_irq(&phba->hbalock); 2094 return ret; 2095 } 2096 2097 /** 2098 * lpfc_mbx_cmpl_fcf_scan_read_fcf_rec - fcf scan read_fcf mbox cmpl handler. 2099 * @phba: pointer to lpfc hba data structure. 2100 * @mboxq: pointer to mailbox object. 2101 * 2102 * This function iterates through all the fcf records available in 2103 * HBA and chooses the optimal FCF record for discovery. After finding 2104 * the FCF for discovery it registers the FCF record and kicks start 2105 * discovery. 2106 * If FCF_IN_USE flag is set in currently used FCF, the routine tries to 2107 * use an FCF record which matches fabric name and mac address of the 2108 * currently used FCF record. 2109 * If the driver supports only one FCF, it will try to use the FCF record 2110 * used by BOOT_BIOS. 2111 */ 2112 void 2113 lpfc_mbx_cmpl_fcf_scan_read_fcf_rec(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq) 2114 { 2115 struct fcf_record *new_fcf_record; 2116 uint32_t boot_flag, addr_mode; 2117 uint16_t fcf_index, next_fcf_index; 2118 struct lpfc_fcf_rec *fcf_rec = NULL; 2119 uint16_t vlan_id; 2120 uint32_t seed; 2121 bool select_new_fcf; 2122 int rc; 2123 2124 /* If there is pending FCoE event restart FCF table scan */ 2125 if (lpfc_check_pending_fcoe_event(phba, LPFC_SKIP_UNREG_FCF)) { 2126 lpfc_sli4_mbox_cmd_free(phba, mboxq); 2127 return; 2128 } 2129 2130 /* Parse the FCF record from the non-embedded mailbox command */ 2131 new_fcf_record = lpfc_sli4_fcf_rec_mbox_parse(phba, mboxq, 2132 &next_fcf_index); 2133 if (!new_fcf_record) { 2134 lpfc_printf_log(phba, KERN_ERR, LOG_FIP, 2135 "2765 Mailbox command READ_FCF_RECORD " 2136 "failed to retrieve a FCF record.\n"); 2137 /* Let next new FCF event trigger fast failover */ 2138 spin_lock_irq(&phba->hbalock); 2139 phba->hba_flag &= ~FCF_TS_INPROG; 2140 spin_unlock_irq(&phba->hbalock); 2141 lpfc_sli4_mbox_cmd_free(phba, mboxq); 2142 return; 2143 } 2144 2145 /* Check the FCF record against the connection list */ 2146 rc = lpfc_match_fcf_conn_list(phba, new_fcf_record, &boot_flag, 2147 &addr_mode, &vlan_id); 2148 2149 /* Log the FCF record information if turned on */ 2150 lpfc_sli4_log_fcf_record_info(phba, new_fcf_record, vlan_id, 2151 next_fcf_index); 2152 2153 /* 2154 * If the fcf record does not match with connect list entries 2155 * read the next entry; otherwise, this is an eligible FCF 2156 * record for roundrobin FCF failover. 2157 */ 2158 if (!rc) { 2159 lpfc_sli4_fcf_pri_list_del(phba, 2160 bf_get(lpfc_fcf_record_fcf_index, 2161 new_fcf_record)); 2162 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP, 2163 "2781 FCF (x%x) failed connection " 2164 "list check: (x%x/x%x)\n", 2165 bf_get(lpfc_fcf_record_fcf_index, 2166 new_fcf_record), 2167 bf_get(lpfc_fcf_record_fcf_avail, 2168 new_fcf_record), 2169 bf_get(lpfc_fcf_record_fcf_valid, 2170 new_fcf_record)); 2171 if ((phba->fcf.fcf_flag & FCF_IN_USE) && 2172 lpfc_sli4_fcf_record_match(phba, &phba->fcf.current_rec, 2173 new_fcf_record, LPFC_FCOE_IGNORE_VID)) { 2174 if (bf_get(lpfc_fcf_record_fcf_index, new_fcf_record) != 2175 phba->fcf.current_rec.fcf_indx) { 2176 lpfc_printf_log(phba, KERN_ERR, LOG_FIP, 2177 "2862 FCF (x%x) matches property " 2178 "of in-use FCF (x%x)\n", 2179 bf_get(lpfc_fcf_record_fcf_index, 2180 new_fcf_record), 2181 phba->fcf.current_rec.fcf_indx); 2182 goto read_next_fcf; 2183 } 2184 /* 2185 * In case the current in-use FCF record becomes 2186 * invalid/unavailable during FCF discovery that 2187 * was not triggered by fast FCF failover process, 2188 * treat it as fast FCF failover. 2189 */ 2190 if (!(phba->fcf.fcf_flag & FCF_REDISC_PEND) && 2191 !(phba->fcf.fcf_flag & FCF_REDISC_FOV)) { 2192 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP, 2193 "2835 Invalid in-use FCF " 2194 "(x%x), enter FCF failover " 2195 "table scan.\n", 2196 phba->fcf.current_rec.fcf_indx); 2197 spin_lock_irq(&phba->hbalock); 2198 phba->fcf.fcf_flag |= FCF_REDISC_FOV; 2199 spin_unlock_irq(&phba->hbalock); 2200 lpfc_sli4_mbox_cmd_free(phba, mboxq); 2201 lpfc_sli4_fcf_scan_read_fcf_rec(phba, 2202 LPFC_FCOE_FCF_GET_FIRST); 2203 return; 2204 } 2205 } 2206 goto read_next_fcf; 2207 } else { 2208 fcf_index = bf_get(lpfc_fcf_record_fcf_index, new_fcf_record); 2209 rc = lpfc_sli4_fcf_pri_list_add(phba, fcf_index, 2210 new_fcf_record); 2211 if (rc) 2212 goto read_next_fcf; 2213 } 2214 2215 /* 2216 * If this is not the first FCF discovery of the HBA, use last 2217 * FCF record for the discovery. The condition that a rescan 2218 * matches the in-use FCF record: fabric name, switch name, mac 2219 * address, and vlan_id. 2220 */ 2221 spin_lock_irq(&phba->hbalock); 2222 if (phba->fcf.fcf_flag & FCF_IN_USE) { 2223 if (phba->cfg_fcf_failover_policy == LPFC_FCF_FOV && 2224 lpfc_sli4_fcf_record_match(phba, &phba->fcf.current_rec, 2225 new_fcf_record, vlan_id)) { 2226 if (bf_get(lpfc_fcf_record_fcf_index, new_fcf_record) == 2227 phba->fcf.current_rec.fcf_indx) { 2228 phba->fcf.fcf_flag |= FCF_AVAILABLE; 2229 if (phba->fcf.fcf_flag & FCF_REDISC_PEND) 2230 /* Stop FCF redisc wait timer */ 2231 __lpfc_sli4_stop_fcf_redisc_wait_timer( 2232 phba); 2233 else if (phba->fcf.fcf_flag & FCF_REDISC_FOV) 2234 /* Fast failover, mark completed */ 2235 phba->fcf.fcf_flag &= ~FCF_REDISC_FOV; 2236 spin_unlock_irq(&phba->hbalock); 2237 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2238 "2836 New FCF matches in-use " 2239 "FCF (x%x)\n", 2240 phba->fcf.current_rec.fcf_indx); 2241 goto out; 2242 } else 2243 lpfc_printf_log(phba, KERN_ERR, LOG_FIP, 2244 "2863 New FCF (x%x) matches " 2245 "property of in-use FCF (x%x)\n", 2246 bf_get(lpfc_fcf_record_fcf_index, 2247 new_fcf_record), 2248 phba->fcf.current_rec.fcf_indx); 2249 } 2250 /* 2251 * Read next FCF record from HBA searching for the matching 2252 * with in-use record only if not during the fast failover 2253 * period. In case of fast failover period, it shall try to 2254 * determine whether the FCF record just read should be the 2255 * next candidate. 2256 */ 2257 if (!(phba->fcf.fcf_flag & FCF_REDISC_FOV)) { 2258 spin_unlock_irq(&phba->hbalock); 2259 goto read_next_fcf; 2260 } 2261 } 2262 /* 2263 * Update on failover FCF record only if it's in FCF fast-failover 2264 * period; otherwise, update on current FCF record. 2265 */ 2266 if (phba->fcf.fcf_flag & FCF_REDISC_FOV) 2267 fcf_rec = &phba->fcf.failover_rec; 2268 else 2269 fcf_rec = &phba->fcf.current_rec; 2270 2271 if (phba->fcf.fcf_flag & FCF_AVAILABLE) { 2272 /* 2273 * If the driver FCF record does not have boot flag 2274 * set and new hba fcf record has boot flag set, use 2275 * the new hba fcf record. 2276 */ 2277 if (boot_flag && !(fcf_rec->flag & BOOT_ENABLE)) { 2278 /* Choose this FCF record */ 2279 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2280 "2837 Update current FCF record " 2281 "(x%x) with new FCF record (x%x)\n", 2282 fcf_rec->fcf_indx, 2283 bf_get(lpfc_fcf_record_fcf_index, 2284 new_fcf_record)); 2285 __lpfc_update_fcf_record(phba, fcf_rec, new_fcf_record, 2286 addr_mode, vlan_id, BOOT_ENABLE); 2287 spin_unlock_irq(&phba->hbalock); 2288 goto read_next_fcf; 2289 } 2290 /* 2291 * If the driver FCF record has boot flag set and the 2292 * new hba FCF record does not have boot flag, read 2293 * the next FCF record. 2294 */ 2295 if (!boot_flag && (fcf_rec->flag & BOOT_ENABLE)) { 2296 spin_unlock_irq(&phba->hbalock); 2297 goto read_next_fcf; 2298 } 2299 /* 2300 * If the new hba FCF record has lower priority value 2301 * than the driver FCF record, use the new record. 2302 */ 2303 if (new_fcf_record->fip_priority < fcf_rec->priority) { 2304 /* Choose the new FCF record with lower priority */ 2305 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2306 "2838 Update current FCF record " 2307 "(x%x) with new FCF record (x%x)\n", 2308 fcf_rec->fcf_indx, 2309 bf_get(lpfc_fcf_record_fcf_index, 2310 new_fcf_record)); 2311 __lpfc_update_fcf_record(phba, fcf_rec, new_fcf_record, 2312 addr_mode, vlan_id, 0); 2313 /* Reset running random FCF selection count */ 2314 phba->fcf.eligible_fcf_cnt = 1; 2315 } else if (new_fcf_record->fip_priority == fcf_rec->priority) { 2316 /* Update running random FCF selection count */ 2317 phba->fcf.eligible_fcf_cnt++; 2318 select_new_fcf = lpfc_sli4_new_fcf_random_select(phba, 2319 phba->fcf.eligible_fcf_cnt); 2320 if (select_new_fcf) { 2321 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2322 "2839 Update current FCF record " 2323 "(x%x) with new FCF record (x%x)\n", 2324 fcf_rec->fcf_indx, 2325 bf_get(lpfc_fcf_record_fcf_index, 2326 new_fcf_record)); 2327 /* Choose the new FCF by random selection */ 2328 __lpfc_update_fcf_record(phba, fcf_rec, 2329 new_fcf_record, 2330 addr_mode, vlan_id, 0); 2331 } 2332 } 2333 spin_unlock_irq(&phba->hbalock); 2334 goto read_next_fcf; 2335 } 2336 /* 2337 * This is the first suitable FCF record, choose this record for 2338 * initial best-fit FCF. 2339 */ 2340 if (fcf_rec) { 2341 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2342 "2840 Update initial FCF candidate " 2343 "with FCF (x%x)\n", 2344 bf_get(lpfc_fcf_record_fcf_index, 2345 new_fcf_record)); 2346 __lpfc_update_fcf_record(phba, fcf_rec, new_fcf_record, 2347 addr_mode, vlan_id, (boot_flag ? 2348 BOOT_ENABLE : 0)); 2349 phba->fcf.fcf_flag |= FCF_AVAILABLE; 2350 /* Setup initial running random FCF selection count */ 2351 phba->fcf.eligible_fcf_cnt = 1; 2352 /* Seeding the random number generator for random selection */ 2353 seed = (uint32_t)(0xFFFFFFFF & jiffies); 2354 srandom32(seed); 2355 } 2356 spin_unlock_irq(&phba->hbalock); 2357 goto read_next_fcf; 2358 2359 read_next_fcf: 2360 lpfc_sli4_mbox_cmd_free(phba, mboxq); 2361 if (next_fcf_index == LPFC_FCOE_FCF_NEXT_NONE || next_fcf_index == 0) { 2362 if (phba->fcf.fcf_flag & FCF_REDISC_FOV) { 2363 /* 2364 * Case of FCF fast failover scan 2365 */ 2366 2367 /* 2368 * It has not found any suitable FCF record, cancel 2369 * FCF scan inprogress, and do nothing 2370 */ 2371 if (!(phba->fcf.failover_rec.flag & RECORD_VALID)) { 2372 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP, 2373 "2782 No suitable FCF found: " 2374 "(x%x/x%x)\n", 2375 phba->fcoe_eventtag_at_fcf_scan, 2376 bf_get(lpfc_fcf_record_fcf_index, 2377 new_fcf_record)); 2378 spin_lock_irq(&phba->hbalock); 2379 if (phba->hba_flag & HBA_DEVLOSS_TMO) { 2380 phba->hba_flag &= ~FCF_TS_INPROG; 2381 spin_unlock_irq(&phba->hbalock); 2382 /* Unregister in-use FCF and rescan */ 2383 lpfc_printf_log(phba, KERN_INFO, 2384 LOG_FIP, 2385 "2864 On devloss tmo " 2386 "unreg in-use FCF and " 2387 "rescan FCF table\n"); 2388 lpfc_unregister_fcf_rescan(phba); 2389 return; 2390 } 2391 /* 2392 * Let next new FCF event trigger fast failover 2393 */ 2394 phba->hba_flag &= ~FCF_TS_INPROG; 2395 spin_unlock_irq(&phba->hbalock); 2396 return; 2397 } 2398 /* 2399 * It has found a suitable FCF record that is not 2400 * the same as in-use FCF record, unregister the 2401 * in-use FCF record, replace the in-use FCF record 2402 * with the new FCF record, mark FCF fast failover 2403 * completed, and then start register the new FCF 2404 * record. 2405 */ 2406 2407 /* Unregister the current in-use FCF record */ 2408 lpfc_unregister_fcf(phba); 2409 2410 /* Replace in-use record with the new record */ 2411 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2412 "2842 Replace in-use FCF (x%x) " 2413 "with failover FCF (x%x)\n", 2414 phba->fcf.current_rec.fcf_indx, 2415 phba->fcf.failover_rec.fcf_indx); 2416 memcpy(&phba->fcf.current_rec, 2417 &phba->fcf.failover_rec, 2418 sizeof(struct lpfc_fcf_rec)); 2419 /* 2420 * Mark the fast FCF failover rediscovery completed 2421 * and the start of the first round of the roundrobin 2422 * FCF failover. 2423 */ 2424 spin_lock_irq(&phba->hbalock); 2425 phba->fcf.fcf_flag &= ~FCF_REDISC_FOV; 2426 spin_unlock_irq(&phba->hbalock); 2427 /* Register to the new FCF record */ 2428 lpfc_register_fcf(phba); 2429 } else { 2430 /* 2431 * In case of transaction period to fast FCF failover, 2432 * do nothing when search to the end of the FCF table. 2433 */ 2434 if ((phba->fcf.fcf_flag & FCF_REDISC_EVT) || 2435 (phba->fcf.fcf_flag & FCF_REDISC_PEND)) 2436 return; 2437 2438 if (phba->cfg_fcf_failover_policy == LPFC_FCF_FOV && 2439 phba->fcf.fcf_flag & FCF_IN_USE) { 2440 /* 2441 * In case the current in-use FCF record no 2442 * longer existed during FCF discovery that 2443 * was not triggered by fast FCF failover 2444 * process, treat it as fast FCF failover. 2445 */ 2446 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2447 "2841 In-use FCF record (x%x) " 2448 "not reported, entering fast " 2449 "FCF failover mode scanning.\n", 2450 phba->fcf.current_rec.fcf_indx); 2451 spin_lock_irq(&phba->hbalock); 2452 phba->fcf.fcf_flag |= FCF_REDISC_FOV; 2453 spin_unlock_irq(&phba->hbalock); 2454 lpfc_sli4_fcf_scan_read_fcf_rec(phba, 2455 LPFC_FCOE_FCF_GET_FIRST); 2456 return; 2457 } 2458 /* Register to the new FCF record */ 2459 lpfc_register_fcf(phba); 2460 } 2461 } else 2462 lpfc_sli4_fcf_scan_read_fcf_rec(phba, next_fcf_index); 2463 return; 2464 2465 out: 2466 lpfc_sli4_mbox_cmd_free(phba, mboxq); 2467 lpfc_register_fcf(phba); 2468 2469 return; 2470 } 2471 2472 /** 2473 * lpfc_mbx_cmpl_fcf_rr_read_fcf_rec - fcf roundrobin read_fcf mbox cmpl hdler 2474 * @phba: pointer to lpfc hba data structure. 2475 * @mboxq: pointer to mailbox object. 2476 * 2477 * This is the callback function for FLOGI failure roundrobin FCF failover 2478 * read FCF record mailbox command from the eligible FCF record bmask for 2479 * performing the failover. If the FCF read back is not valid/available, it 2480 * fails through to retrying FLOGI to the currently registered FCF again. 2481 * Otherwise, if the FCF read back is valid and available, it will set the 2482 * newly read FCF record to the failover FCF record, unregister currently 2483 * registered FCF record, copy the failover FCF record to the current 2484 * FCF record, and then register the current FCF record before proceeding 2485 * to trying FLOGI on the new failover FCF. 2486 */ 2487 void 2488 lpfc_mbx_cmpl_fcf_rr_read_fcf_rec(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq) 2489 { 2490 struct fcf_record *new_fcf_record; 2491 uint32_t boot_flag, addr_mode; 2492 uint16_t next_fcf_index, fcf_index; 2493 uint16_t current_fcf_index; 2494 uint16_t vlan_id; 2495 int rc; 2496 2497 /* If link state is not up, stop the roundrobin failover process */ 2498 if (phba->link_state < LPFC_LINK_UP) { 2499 spin_lock_irq(&phba->hbalock); 2500 phba->fcf.fcf_flag &= ~FCF_DISCOVERY; 2501 phba->hba_flag &= ~FCF_RR_INPROG; 2502 spin_unlock_irq(&phba->hbalock); 2503 goto out; 2504 } 2505 2506 /* Parse the FCF record from the non-embedded mailbox command */ 2507 new_fcf_record = lpfc_sli4_fcf_rec_mbox_parse(phba, mboxq, 2508 &next_fcf_index); 2509 if (!new_fcf_record) { 2510 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP, 2511 "2766 Mailbox command READ_FCF_RECORD " 2512 "failed to retrieve a FCF record.\n"); 2513 goto error_out; 2514 } 2515 2516 /* Get the needed parameters from FCF record */ 2517 rc = lpfc_match_fcf_conn_list(phba, new_fcf_record, &boot_flag, 2518 &addr_mode, &vlan_id); 2519 2520 /* Log the FCF record information if turned on */ 2521 lpfc_sli4_log_fcf_record_info(phba, new_fcf_record, vlan_id, 2522 next_fcf_index); 2523 2524 fcf_index = bf_get(lpfc_fcf_record_fcf_index, new_fcf_record); 2525 if (!rc) { 2526 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2527 "2848 Remove ineligible FCF (x%x) from " 2528 "from roundrobin bmask\n", fcf_index); 2529 /* Clear roundrobin bmask bit for ineligible FCF */ 2530 lpfc_sli4_fcf_rr_index_clear(phba, fcf_index); 2531 /* Perform next round of roundrobin FCF failover */ 2532 fcf_index = lpfc_sli4_fcf_rr_next_index_get(phba); 2533 rc = lpfc_sli4_fcf_rr_next_proc(phba->pport, fcf_index); 2534 if (rc) 2535 goto out; 2536 goto error_out; 2537 } 2538 2539 if (fcf_index == phba->fcf.current_rec.fcf_indx) { 2540 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2541 "2760 Perform FLOGI roundrobin FCF failover: " 2542 "FCF (x%x) back to FCF (x%x)\n", 2543 phba->fcf.current_rec.fcf_indx, fcf_index); 2544 /* Wait 500 ms before retrying FLOGI to current FCF */ 2545 msleep(500); 2546 lpfc_issue_init_vfi(phba->pport); 2547 goto out; 2548 } 2549 2550 /* Upload new FCF record to the failover FCF record */ 2551 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2552 "2834 Update current FCF (x%x) with new FCF (x%x)\n", 2553 phba->fcf.failover_rec.fcf_indx, fcf_index); 2554 spin_lock_irq(&phba->hbalock); 2555 __lpfc_update_fcf_record(phba, &phba->fcf.failover_rec, 2556 new_fcf_record, addr_mode, vlan_id, 2557 (boot_flag ? BOOT_ENABLE : 0)); 2558 spin_unlock_irq(&phba->hbalock); 2559 2560 current_fcf_index = phba->fcf.current_rec.fcf_indx; 2561 2562 /* Unregister the current in-use FCF record */ 2563 lpfc_unregister_fcf(phba); 2564 2565 /* Replace in-use record with the new record */ 2566 memcpy(&phba->fcf.current_rec, &phba->fcf.failover_rec, 2567 sizeof(struct lpfc_fcf_rec)); 2568 2569 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2570 "2783 Perform FLOGI roundrobin FCF failover: FCF " 2571 "(x%x) to FCF (x%x)\n", current_fcf_index, fcf_index); 2572 2573 error_out: 2574 lpfc_register_fcf(phba); 2575 out: 2576 lpfc_sli4_mbox_cmd_free(phba, mboxq); 2577 } 2578 2579 /** 2580 * lpfc_mbx_cmpl_read_fcf_rec - read fcf completion handler. 2581 * @phba: pointer to lpfc hba data structure. 2582 * @mboxq: pointer to mailbox object. 2583 * 2584 * This is the callback function of read FCF record mailbox command for 2585 * updating the eligible FCF bmask for FLOGI failure roundrobin FCF 2586 * failover when a new FCF event happened. If the FCF read back is 2587 * valid/available and it passes the connection list check, it updates 2588 * the bmask for the eligible FCF record for roundrobin failover. 2589 */ 2590 void 2591 lpfc_mbx_cmpl_read_fcf_rec(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq) 2592 { 2593 struct fcf_record *new_fcf_record; 2594 uint32_t boot_flag, addr_mode; 2595 uint16_t fcf_index, next_fcf_index; 2596 uint16_t vlan_id; 2597 int rc; 2598 2599 /* If link state is not up, no need to proceed */ 2600 if (phba->link_state < LPFC_LINK_UP) 2601 goto out; 2602 2603 /* If FCF discovery period is over, no need to proceed */ 2604 if (!(phba->fcf.fcf_flag & FCF_DISCOVERY)) 2605 goto out; 2606 2607 /* Parse the FCF record from the non-embedded mailbox command */ 2608 new_fcf_record = lpfc_sli4_fcf_rec_mbox_parse(phba, mboxq, 2609 &next_fcf_index); 2610 if (!new_fcf_record) { 2611 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2612 "2767 Mailbox command READ_FCF_RECORD " 2613 "failed to retrieve a FCF record.\n"); 2614 goto out; 2615 } 2616 2617 /* Check the connection list for eligibility */ 2618 rc = lpfc_match_fcf_conn_list(phba, new_fcf_record, &boot_flag, 2619 &addr_mode, &vlan_id); 2620 2621 /* Log the FCF record information if turned on */ 2622 lpfc_sli4_log_fcf_record_info(phba, new_fcf_record, vlan_id, 2623 next_fcf_index); 2624 2625 if (!rc) 2626 goto out; 2627 2628 /* Update the eligible FCF record index bmask */ 2629 fcf_index = bf_get(lpfc_fcf_record_fcf_index, new_fcf_record); 2630 2631 rc = lpfc_sli4_fcf_pri_list_add(phba, fcf_index, new_fcf_record); 2632 2633 out: 2634 lpfc_sli4_mbox_cmd_free(phba, mboxq); 2635 } 2636 2637 /** 2638 * lpfc_init_vfi_cmpl - Completion handler for init_vfi mbox command. 2639 * @phba: pointer to lpfc hba data structure. 2640 * @mboxq: pointer to mailbox data structure. 2641 * 2642 * This function handles completion of init vfi mailbox command. 2643 */ 2644 void 2645 lpfc_init_vfi_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq) 2646 { 2647 struct lpfc_vport *vport = mboxq->vport; 2648 2649 /* VFI not supported on interface type 0, just do the flogi */ 2650 if (mboxq->u.mb.mbxStatus && (bf_get(lpfc_sli_intf_if_type, 2651 &phba->sli4_hba.sli_intf) != LPFC_SLI_INTF_IF_TYPE_0)) { 2652 lpfc_printf_vlog(vport, KERN_ERR, 2653 LOG_MBOX, 2654 "2891 Init VFI mailbox failed 0x%x\n", 2655 mboxq->u.mb.mbxStatus); 2656 mempool_free(mboxq, phba->mbox_mem_pool); 2657 lpfc_vport_set_state(vport, FC_VPORT_FAILED); 2658 return; 2659 } 2660 2661 lpfc_initial_flogi(vport); 2662 mempool_free(mboxq, phba->mbox_mem_pool); 2663 return; 2664 } 2665 2666 /** 2667 * lpfc_issue_init_vfi - Issue init_vfi mailbox command. 2668 * @vport: pointer to lpfc_vport data structure. 2669 * 2670 * This function issue a init_vfi mailbox command to initialize the VFI and 2671 * VPI for the physical port. 2672 */ 2673 void 2674 lpfc_issue_init_vfi(struct lpfc_vport *vport) 2675 { 2676 LPFC_MBOXQ_t *mboxq; 2677 int rc; 2678 struct lpfc_hba *phba = vport->phba; 2679 2680 mboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 2681 if (!mboxq) { 2682 lpfc_printf_vlog(vport, KERN_ERR, 2683 LOG_MBOX, "2892 Failed to allocate " 2684 "init_vfi mailbox\n"); 2685 return; 2686 } 2687 lpfc_init_vfi(mboxq, vport); 2688 mboxq->mbox_cmpl = lpfc_init_vfi_cmpl; 2689 rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_NOWAIT); 2690 if (rc == MBX_NOT_FINISHED) { 2691 lpfc_printf_vlog(vport, KERN_ERR, 2692 LOG_MBOX, "2893 Failed to issue init_vfi mailbox\n"); 2693 mempool_free(mboxq, vport->phba->mbox_mem_pool); 2694 } 2695 } 2696 2697 /** 2698 * lpfc_init_vpi_cmpl - Completion handler for init_vpi mbox command. 2699 * @phba: pointer to lpfc hba data structure. 2700 * @mboxq: pointer to mailbox data structure. 2701 * 2702 * This function handles completion of init vpi mailbox command. 2703 */ 2704 void 2705 lpfc_init_vpi_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq) 2706 { 2707 struct lpfc_vport *vport = mboxq->vport; 2708 struct lpfc_nodelist *ndlp; 2709 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 2710 2711 if (mboxq->u.mb.mbxStatus) { 2712 lpfc_printf_vlog(vport, KERN_ERR, 2713 LOG_MBOX, 2714 "2609 Init VPI mailbox failed 0x%x\n", 2715 mboxq->u.mb.mbxStatus); 2716 mempool_free(mboxq, phba->mbox_mem_pool); 2717 lpfc_vport_set_state(vport, FC_VPORT_FAILED); 2718 return; 2719 } 2720 spin_lock_irq(shost->host_lock); 2721 vport->fc_flag &= ~FC_VPORT_NEEDS_INIT_VPI; 2722 spin_unlock_irq(shost->host_lock); 2723 2724 /* If this port is physical port or FDISC is done, do reg_vpi */ 2725 if ((phba->pport == vport) || (vport->port_state == LPFC_FDISC)) { 2726 ndlp = lpfc_findnode_did(vport, Fabric_DID); 2727 if (!ndlp) 2728 lpfc_printf_vlog(vport, KERN_ERR, 2729 LOG_DISCOVERY, 2730 "2731 Cannot find fabric " 2731 "controller node\n"); 2732 else 2733 lpfc_register_new_vport(phba, vport, ndlp); 2734 mempool_free(mboxq, phba->mbox_mem_pool); 2735 return; 2736 } 2737 2738 if (phba->link_flag & LS_NPIV_FAB_SUPPORTED) 2739 lpfc_initial_fdisc(vport); 2740 else { 2741 lpfc_vport_set_state(vport, FC_VPORT_NO_FABRIC_SUPP); 2742 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS, 2743 "2606 No NPIV Fabric support\n"); 2744 } 2745 mempool_free(mboxq, phba->mbox_mem_pool); 2746 return; 2747 } 2748 2749 /** 2750 * lpfc_issue_init_vpi - Issue init_vpi mailbox command. 2751 * @vport: pointer to lpfc_vport data structure. 2752 * 2753 * This function issue a init_vpi mailbox command to initialize 2754 * VPI for the vport. 2755 */ 2756 void 2757 lpfc_issue_init_vpi(struct lpfc_vport *vport) 2758 { 2759 LPFC_MBOXQ_t *mboxq; 2760 int rc; 2761 2762 mboxq = mempool_alloc(vport->phba->mbox_mem_pool, GFP_KERNEL); 2763 if (!mboxq) { 2764 lpfc_printf_vlog(vport, KERN_ERR, 2765 LOG_MBOX, "2607 Failed to allocate " 2766 "init_vpi mailbox\n"); 2767 return; 2768 } 2769 lpfc_init_vpi(vport->phba, mboxq, vport->vpi); 2770 mboxq->vport = vport; 2771 mboxq->mbox_cmpl = lpfc_init_vpi_cmpl; 2772 rc = lpfc_sli_issue_mbox(vport->phba, mboxq, MBX_NOWAIT); 2773 if (rc == MBX_NOT_FINISHED) { 2774 lpfc_printf_vlog(vport, KERN_ERR, 2775 LOG_MBOX, "2608 Failed to issue init_vpi mailbox\n"); 2776 mempool_free(mboxq, vport->phba->mbox_mem_pool); 2777 } 2778 } 2779 2780 /** 2781 * lpfc_start_fdiscs - send fdiscs for each vports on this port. 2782 * @phba: pointer to lpfc hba data structure. 2783 * 2784 * This function loops through the list of vports on the @phba and issues an 2785 * FDISC if possible. 2786 */ 2787 void 2788 lpfc_start_fdiscs(struct lpfc_hba *phba) 2789 { 2790 struct lpfc_vport **vports; 2791 int i; 2792 2793 vports = lpfc_create_vport_work_array(phba); 2794 if (vports != NULL) { 2795 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) { 2796 if (vports[i]->port_type == LPFC_PHYSICAL_PORT) 2797 continue; 2798 /* There are no vpi for this vport */ 2799 if (vports[i]->vpi > phba->max_vpi) { 2800 lpfc_vport_set_state(vports[i], 2801 FC_VPORT_FAILED); 2802 continue; 2803 } 2804 if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) { 2805 lpfc_vport_set_state(vports[i], 2806 FC_VPORT_LINKDOWN); 2807 continue; 2808 } 2809 if (vports[i]->fc_flag & FC_VPORT_NEEDS_INIT_VPI) { 2810 lpfc_issue_init_vpi(vports[i]); 2811 continue; 2812 } 2813 if (phba->link_flag & LS_NPIV_FAB_SUPPORTED) 2814 lpfc_initial_fdisc(vports[i]); 2815 else { 2816 lpfc_vport_set_state(vports[i], 2817 FC_VPORT_NO_FABRIC_SUPP); 2818 lpfc_printf_vlog(vports[i], KERN_ERR, 2819 LOG_ELS, 2820 "0259 No NPIV " 2821 "Fabric support\n"); 2822 } 2823 } 2824 } 2825 lpfc_destroy_vport_work_array(phba, vports); 2826 } 2827 2828 void 2829 lpfc_mbx_cmpl_reg_vfi(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq) 2830 { 2831 struct lpfc_dmabuf *dmabuf = mboxq->context1; 2832 struct lpfc_vport *vport = mboxq->vport; 2833 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 2834 2835 if (mboxq->u.mb.mbxStatus) { 2836 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX, 2837 "2018 REG_VFI mbxStatus error x%x " 2838 "HBA state x%x\n", 2839 mboxq->u.mb.mbxStatus, vport->port_state); 2840 if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) { 2841 /* FLOGI failed, use loop map to make discovery list */ 2842 lpfc_disc_list_loopmap(vport); 2843 /* Start discovery */ 2844 lpfc_disc_start(vport); 2845 goto fail_free_mem; 2846 } 2847 lpfc_vport_set_state(vport, FC_VPORT_FAILED); 2848 goto fail_free_mem; 2849 } 2850 /* The VPI is implicitly registered when the VFI is registered */ 2851 spin_lock_irq(shost->host_lock); 2852 vport->vpi_state |= LPFC_VPI_REGISTERED; 2853 vport->fc_flag |= FC_VFI_REGISTERED; 2854 vport->fc_flag &= ~FC_VPORT_NEEDS_REG_VPI; 2855 vport->fc_flag &= ~FC_VPORT_NEEDS_INIT_VPI; 2856 spin_unlock_irq(shost->host_lock); 2857 2858 if (vport->port_state == LPFC_FABRIC_CFG_LINK) { 2859 /* For private loop just start discovery and we are done. */ 2860 if ((phba->fc_topology == LPFC_TOPOLOGY_LOOP) && 2861 (phba->alpa_map[0] == 0) && 2862 !(vport->fc_flag & FC_PUBLIC_LOOP)) { 2863 /* Use loop map to make discovery list */ 2864 lpfc_disc_list_loopmap(vport); 2865 /* Start discovery */ 2866 lpfc_disc_start(vport); 2867 } else { 2868 lpfc_start_fdiscs(phba); 2869 lpfc_do_scr_ns_plogi(phba, vport); 2870 } 2871 } 2872 2873 fail_free_mem: 2874 mempool_free(mboxq, phba->mbox_mem_pool); 2875 lpfc_mbuf_free(phba, dmabuf->virt, dmabuf->phys); 2876 kfree(dmabuf); 2877 return; 2878 } 2879 2880 static void 2881 lpfc_mbx_cmpl_read_sparam(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 2882 { 2883 MAILBOX_t *mb = &pmb->u.mb; 2884 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) pmb->context1; 2885 struct lpfc_vport *vport = pmb->vport; 2886 2887 2888 /* Check for error */ 2889 if (mb->mbxStatus) { 2890 /* READ_SPARAM mbox error <mbxStatus> state <hba_state> */ 2891 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX, 2892 "0319 READ_SPARAM mbxStatus error x%x " 2893 "hba state x%x>\n", 2894 mb->mbxStatus, vport->port_state); 2895 lpfc_linkdown(phba); 2896 goto out; 2897 } 2898 2899 memcpy((uint8_t *) &vport->fc_sparam, (uint8_t *) mp->virt, 2900 sizeof (struct serv_parm)); 2901 lpfc_update_vport_wwn(vport); 2902 if (vport->port_type == LPFC_PHYSICAL_PORT) { 2903 memcpy(&phba->wwnn, &vport->fc_nodename, sizeof(phba->wwnn)); 2904 memcpy(&phba->wwpn, &vport->fc_portname, sizeof(phba->wwnn)); 2905 } 2906 2907 lpfc_mbuf_free(phba, mp->virt, mp->phys); 2908 kfree(mp); 2909 mempool_free(pmb, phba->mbox_mem_pool); 2910 return; 2911 2912 out: 2913 pmb->context1 = NULL; 2914 lpfc_mbuf_free(phba, mp->virt, mp->phys); 2915 kfree(mp); 2916 lpfc_issue_clear_la(phba, vport); 2917 mempool_free(pmb, phba->mbox_mem_pool); 2918 return; 2919 } 2920 2921 static void 2922 lpfc_mbx_process_link_up(struct lpfc_hba *phba, struct lpfc_mbx_read_top *la) 2923 { 2924 struct lpfc_vport *vport = phba->pport; 2925 LPFC_MBOXQ_t *sparam_mbox, *cfglink_mbox = NULL; 2926 int i; 2927 struct lpfc_dmabuf *mp; 2928 int rc; 2929 struct fcf_record *fcf_record; 2930 2931 spin_lock_irq(&phba->hbalock); 2932 switch (bf_get(lpfc_mbx_read_top_link_spd, la)) { 2933 case LPFC_LINK_SPEED_1GHZ: 2934 case LPFC_LINK_SPEED_2GHZ: 2935 case LPFC_LINK_SPEED_4GHZ: 2936 case LPFC_LINK_SPEED_8GHZ: 2937 case LPFC_LINK_SPEED_10GHZ: 2938 case LPFC_LINK_SPEED_16GHZ: 2939 phba->fc_linkspeed = bf_get(lpfc_mbx_read_top_link_spd, la); 2940 break; 2941 default: 2942 phba->fc_linkspeed = LPFC_LINK_SPEED_UNKNOWN; 2943 break; 2944 } 2945 2946 phba->fc_topology = bf_get(lpfc_mbx_read_top_topology, la); 2947 phba->link_flag &= ~LS_NPIV_FAB_SUPPORTED; 2948 2949 if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) { 2950 phba->sli3_options &= ~LPFC_SLI3_NPIV_ENABLED; 2951 2952 /* if npiv is enabled and this adapter supports npiv log 2953 * a message that npiv is not supported in this topology 2954 */ 2955 if (phba->cfg_enable_npiv && phba->max_vpi) 2956 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT, 2957 "1309 Link Up Event npiv not supported in loop " 2958 "topology\n"); 2959 /* Get Loop Map information */ 2960 if (bf_get(lpfc_mbx_read_top_il, la)) 2961 vport->fc_flag |= FC_LBIT; 2962 2963 vport->fc_myDID = bf_get(lpfc_mbx_read_top_alpa_granted, la); 2964 i = la->lilpBde64.tus.f.bdeSize; 2965 2966 if (i == 0) { 2967 phba->alpa_map[0] = 0; 2968 } else { 2969 if (vport->cfg_log_verbose & LOG_LINK_EVENT) { 2970 int numalpa, j, k; 2971 union { 2972 uint8_t pamap[16]; 2973 struct { 2974 uint32_t wd1; 2975 uint32_t wd2; 2976 uint32_t wd3; 2977 uint32_t wd4; 2978 } pa; 2979 } un; 2980 numalpa = phba->alpa_map[0]; 2981 j = 0; 2982 while (j < numalpa) { 2983 memset(un.pamap, 0, 16); 2984 for (k = 1; j < numalpa; k++) { 2985 un.pamap[k - 1] = 2986 phba->alpa_map[j + 1]; 2987 j++; 2988 if (k == 16) 2989 break; 2990 } 2991 /* Link Up Event ALPA map */ 2992 lpfc_printf_log(phba, 2993 KERN_WARNING, 2994 LOG_LINK_EVENT, 2995 "1304 Link Up Event " 2996 "ALPA map Data: x%x " 2997 "x%x x%x x%x\n", 2998 un.pa.wd1, un.pa.wd2, 2999 un.pa.wd3, un.pa.wd4); 3000 } 3001 } 3002 } 3003 } else { 3004 if (!(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)) { 3005 if (phba->max_vpi && phba->cfg_enable_npiv && 3006 (phba->sli_rev == 3)) 3007 phba->sli3_options |= LPFC_SLI3_NPIV_ENABLED; 3008 } 3009 vport->fc_myDID = phba->fc_pref_DID; 3010 vport->fc_flag |= FC_LBIT; 3011 } 3012 spin_unlock_irq(&phba->hbalock); 3013 3014 lpfc_linkup(phba); 3015 sparam_mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 3016 if (!sparam_mbox) 3017 goto out; 3018 3019 rc = lpfc_read_sparam(phba, sparam_mbox, 0); 3020 if (rc) { 3021 mempool_free(sparam_mbox, phba->mbox_mem_pool); 3022 goto out; 3023 } 3024 sparam_mbox->vport = vport; 3025 sparam_mbox->mbox_cmpl = lpfc_mbx_cmpl_read_sparam; 3026 rc = lpfc_sli_issue_mbox(phba, sparam_mbox, MBX_NOWAIT); 3027 if (rc == MBX_NOT_FINISHED) { 3028 mp = (struct lpfc_dmabuf *) sparam_mbox->context1; 3029 lpfc_mbuf_free(phba, mp->virt, mp->phys); 3030 kfree(mp); 3031 mempool_free(sparam_mbox, phba->mbox_mem_pool); 3032 goto out; 3033 } 3034 3035 if (!(phba->hba_flag & HBA_FCOE_MODE)) { 3036 cfglink_mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 3037 if (!cfglink_mbox) 3038 goto out; 3039 vport->port_state = LPFC_LOCAL_CFG_LINK; 3040 lpfc_config_link(phba, cfglink_mbox); 3041 cfglink_mbox->vport = vport; 3042 cfglink_mbox->mbox_cmpl = lpfc_mbx_cmpl_local_config_link; 3043 rc = lpfc_sli_issue_mbox(phba, cfglink_mbox, MBX_NOWAIT); 3044 if (rc == MBX_NOT_FINISHED) { 3045 mempool_free(cfglink_mbox, phba->mbox_mem_pool); 3046 goto out; 3047 } 3048 } else { 3049 vport->port_state = LPFC_VPORT_UNKNOWN; 3050 /* 3051 * Add the driver's default FCF record at FCF index 0 now. This 3052 * is phase 1 implementation that support FCF index 0 and driver 3053 * defaults. 3054 */ 3055 if (!(phba->hba_flag & HBA_FIP_SUPPORT)) { 3056 fcf_record = kzalloc(sizeof(struct fcf_record), 3057 GFP_KERNEL); 3058 if (unlikely(!fcf_record)) { 3059 lpfc_printf_log(phba, KERN_ERR, 3060 LOG_MBOX | LOG_SLI, 3061 "2554 Could not allocate memory for " 3062 "fcf record\n"); 3063 rc = -ENODEV; 3064 goto out; 3065 } 3066 3067 lpfc_sli4_build_dflt_fcf_record(phba, fcf_record, 3068 LPFC_FCOE_FCF_DEF_INDEX); 3069 rc = lpfc_sli4_add_fcf_record(phba, fcf_record); 3070 if (unlikely(rc)) { 3071 lpfc_printf_log(phba, KERN_ERR, 3072 LOG_MBOX | LOG_SLI, 3073 "2013 Could not manually add FCF " 3074 "record 0, status %d\n", rc); 3075 rc = -ENODEV; 3076 kfree(fcf_record); 3077 goto out; 3078 } 3079 kfree(fcf_record); 3080 } 3081 /* 3082 * The driver is expected to do FIP/FCF. Call the port 3083 * and get the FCF Table. 3084 */ 3085 spin_lock_irq(&phba->hbalock); 3086 if (phba->hba_flag & FCF_TS_INPROG) { 3087 spin_unlock_irq(&phba->hbalock); 3088 return; 3089 } 3090 /* This is the initial FCF discovery scan */ 3091 phba->fcf.fcf_flag |= FCF_INIT_DISC; 3092 spin_unlock_irq(&phba->hbalock); 3093 lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY, 3094 "2778 Start FCF table scan at linkup\n"); 3095 rc = lpfc_sli4_fcf_scan_read_fcf_rec(phba, 3096 LPFC_FCOE_FCF_GET_FIRST); 3097 if (rc) { 3098 spin_lock_irq(&phba->hbalock); 3099 phba->fcf.fcf_flag &= ~FCF_INIT_DISC; 3100 spin_unlock_irq(&phba->hbalock); 3101 goto out; 3102 } 3103 /* Reset FCF roundrobin bmask for new discovery */ 3104 lpfc_sli4_clear_fcf_rr_bmask(phba); 3105 } 3106 3107 return; 3108 out: 3109 lpfc_vport_set_state(vport, FC_VPORT_FAILED); 3110 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX, 3111 "0263 Discovery Mailbox error: state: 0x%x : %p %p\n", 3112 vport->port_state, sparam_mbox, cfglink_mbox); 3113 lpfc_issue_clear_la(phba, vport); 3114 return; 3115 } 3116 3117 static void 3118 lpfc_enable_la(struct lpfc_hba *phba) 3119 { 3120 uint32_t control; 3121 struct lpfc_sli *psli = &phba->sli; 3122 spin_lock_irq(&phba->hbalock); 3123 psli->sli_flag |= LPFC_PROCESS_LA; 3124 if (phba->sli_rev <= LPFC_SLI_REV3) { 3125 control = readl(phba->HCregaddr); 3126 control |= HC_LAINT_ENA; 3127 writel(control, phba->HCregaddr); 3128 readl(phba->HCregaddr); /* flush */ 3129 } 3130 spin_unlock_irq(&phba->hbalock); 3131 } 3132 3133 static void 3134 lpfc_mbx_issue_link_down(struct lpfc_hba *phba) 3135 { 3136 lpfc_linkdown(phba); 3137 lpfc_enable_la(phba); 3138 lpfc_unregister_unused_fcf(phba); 3139 /* turn on Link Attention interrupts - no CLEAR_LA needed */ 3140 } 3141 3142 3143 /* 3144 * This routine handles processing a READ_TOPOLOGY mailbox 3145 * command upon completion. It is setup in the LPFC_MBOXQ 3146 * as the completion routine when the command is 3147 * handed off to the SLI layer. 3148 */ 3149 void 3150 lpfc_mbx_cmpl_read_topology(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 3151 { 3152 struct lpfc_vport *vport = pmb->vport; 3153 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 3154 struct lpfc_mbx_read_top *la; 3155 MAILBOX_t *mb = &pmb->u.mb; 3156 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1); 3157 3158 /* Unblock ELS traffic */ 3159 phba->sli.ring[LPFC_ELS_RING].flag &= ~LPFC_STOP_IOCB_EVENT; 3160 /* Check for error */ 3161 if (mb->mbxStatus) { 3162 lpfc_printf_log(phba, KERN_INFO, LOG_LINK_EVENT, 3163 "1307 READ_LA mbox error x%x state x%x\n", 3164 mb->mbxStatus, vport->port_state); 3165 lpfc_mbx_issue_link_down(phba); 3166 phba->link_state = LPFC_HBA_ERROR; 3167 goto lpfc_mbx_cmpl_read_topology_free_mbuf; 3168 } 3169 3170 la = (struct lpfc_mbx_read_top *) &pmb->u.mb.un.varReadTop; 3171 3172 memcpy(&phba->alpa_map[0], mp->virt, 128); 3173 3174 spin_lock_irq(shost->host_lock); 3175 if (bf_get(lpfc_mbx_read_top_pb, la)) 3176 vport->fc_flag |= FC_BYPASSED_MODE; 3177 else 3178 vport->fc_flag &= ~FC_BYPASSED_MODE; 3179 spin_unlock_irq(shost->host_lock); 3180 3181 if ((phba->fc_eventTag < la->eventTag) || 3182 (phba->fc_eventTag == la->eventTag)) { 3183 phba->fc_stat.LinkMultiEvent++; 3184 if (bf_get(lpfc_mbx_read_top_att_type, la) == LPFC_ATT_LINK_UP) 3185 if (phba->fc_eventTag != 0) 3186 lpfc_linkdown(phba); 3187 } 3188 3189 phba->fc_eventTag = la->eventTag; 3190 spin_lock_irq(&phba->hbalock); 3191 if (bf_get(lpfc_mbx_read_top_mm, la)) 3192 phba->sli.sli_flag |= LPFC_MENLO_MAINT; 3193 else 3194 phba->sli.sli_flag &= ~LPFC_MENLO_MAINT; 3195 spin_unlock_irq(&phba->hbalock); 3196 3197 phba->link_events++; 3198 if ((bf_get(lpfc_mbx_read_top_att_type, la) == LPFC_ATT_LINK_UP) && 3199 (!bf_get(lpfc_mbx_read_top_mm, la))) { 3200 phba->fc_stat.LinkUp++; 3201 if (phba->link_flag & LS_LOOPBACK_MODE) { 3202 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT, 3203 "1306 Link Up Event in loop back mode " 3204 "x%x received Data: x%x x%x x%x x%x\n", 3205 la->eventTag, phba->fc_eventTag, 3206 bf_get(lpfc_mbx_read_top_alpa_granted, 3207 la), 3208 bf_get(lpfc_mbx_read_top_link_spd, la), 3209 phba->alpa_map[0]); 3210 } else { 3211 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT, 3212 "1303 Link Up Event x%x received " 3213 "Data: x%x x%x x%x x%x x%x x%x %d\n", 3214 la->eventTag, phba->fc_eventTag, 3215 bf_get(lpfc_mbx_read_top_alpa_granted, 3216 la), 3217 bf_get(lpfc_mbx_read_top_link_spd, la), 3218 phba->alpa_map[0], 3219 bf_get(lpfc_mbx_read_top_mm, la), 3220 bf_get(lpfc_mbx_read_top_fa, la), 3221 phba->wait_4_mlo_maint_flg); 3222 } 3223 lpfc_mbx_process_link_up(phba, la); 3224 } else if (bf_get(lpfc_mbx_read_top_att_type, la) == 3225 LPFC_ATT_LINK_DOWN) { 3226 phba->fc_stat.LinkDown++; 3227 if (phba->link_flag & LS_LOOPBACK_MODE) { 3228 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT, 3229 "1308 Link Down Event in loop back mode " 3230 "x%x received " 3231 "Data: x%x x%x x%x\n", 3232 la->eventTag, phba->fc_eventTag, 3233 phba->pport->port_state, vport->fc_flag); 3234 } 3235 else { 3236 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT, 3237 "1305 Link Down Event x%x received " 3238 "Data: x%x x%x x%x x%x x%x\n", 3239 la->eventTag, phba->fc_eventTag, 3240 phba->pport->port_state, vport->fc_flag, 3241 bf_get(lpfc_mbx_read_top_mm, la), 3242 bf_get(lpfc_mbx_read_top_fa, la)); 3243 } 3244 lpfc_mbx_issue_link_down(phba); 3245 } 3246 if ((bf_get(lpfc_mbx_read_top_mm, la)) && 3247 (bf_get(lpfc_mbx_read_top_att_type, la) == LPFC_ATT_LINK_UP)) { 3248 if (phba->link_state != LPFC_LINK_DOWN) { 3249 phba->fc_stat.LinkDown++; 3250 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT, 3251 "1312 Link Down Event x%x received " 3252 "Data: x%x x%x x%x\n", 3253 la->eventTag, phba->fc_eventTag, 3254 phba->pport->port_state, vport->fc_flag); 3255 lpfc_mbx_issue_link_down(phba); 3256 } else 3257 lpfc_enable_la(phba); 3258 3259 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT, 3260 "1310 Menlo Maint Mode Link up Event x%x rcvd " 3261 "Data: x%x x%x x%x\n", 3262 la->eventTag, phba->fc_eventTag, 3263 phba->pport->port_state, vport->fc_flag); 3264 /* 3265 * The cmnd that triggered this will be waiting for this 3266 * signal. 3267 */ 3268 /* WAKEUP for MENLO_SET_MODE or MENLO_RESET command. */ 3269 if (phba->wait_4_mlo_maint_flg) { 3270 phba->wait_4_mlo_maint_flg = 0; 3271 wake_up_interruptible(&phba->wait_4_mlo_m_q); 3272 } 3273 } 3274 3275 if (bf_get(lpfc_mbx_read_top_fa, la)) { 3276 if (bf_get(lpfc_mbx_read_top_mm, la)) 3277 lpfc_issue_clear_la(phba, vport); 3278 lpfc_printf_log(phba, KERN_INFO, LOG_LINK_EVENT, 3279 "1311 fa %d\n", 3280 bf_get(lpfc_mbx_read_top_fa, la)); 3281 } 3282 3283 lpfc_mbx_cmpl_read_topology_free_mbuf: 3284 lpfc_mbuf_free(phba, mp->virt, mp->phys); 3285 kfree(mp); 3286 mempool_free(pmb, phba->mbox_mem_pool); 3287 return; 3288 } 3289 3290 /* 3291 * This routine handles processing a REG_LOGIN mailbox 3292 * command upon completion. It is setup in the LPFC_MBOXQ 3293 * as the completion routine when the command is 3294 * handed off to the SLI layer. 3295 */ 3296 void 3297 lpfc_mbx_cmpl_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 3298 { 3299 struct lpfc_vport *vport = pmb->vport; 3300 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1); 3301 struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) pmb->context2; 3302 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 3303 3304 pmb->context1 = NULL; 3305 pmb->context2 = NULL; 3306 3307 if (ndlp->nlp_flag & NLP_REG_LOGIN_SEND) 3308 ndlp->nlp_flag &= ~NLP_REG_LOGIN_SEND; 3309 3310 if (ndlp->nlp_flag & NLP_IGNR_REG_CMPL || 3311 ndlp->nlp_state != NLP_STE_REG_LOGIN_ISSUE) { 3312 /* We rcvd a rscn after issuing this 3313 * mbox reg login, we may have cycled 3314 * back through the state and be 3315 * back at reg login state so this 3316 * mbox needs to be ignored becase 3317 * there is another reg login in 3318 * process. 3319 */ 3320 spin_lock_irq(shost->host_lock); 3321 ndlp->nlp_flag &= ~NLP_IGNR_REG_CMPL; 3322 spin_unlock_irq(shost->host_lock); 3323 } else 3324 /* Good status, call state machine */ 3325 lpfc_disc_state_machine(vport, ndlp, pmb, 3326 NLP_EVT_CMPL_REG_LOGIN); 3327 3328 lpfc_mbuf_free(phba, mp->virt, mp->phys); 3329 kfree(mp); 3330 mempool_free(pmb, phba->mbox_mem_pool); 3331 /* decrement the node reference count held for this callback 3332 * function. 3333 */ 3334 lpfc_nlp_put(ndlp); 3335 3336 return; 3337 } 3338 3339 static void 3340 lpfc_mbx_cmpl_unreg_vpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 3341 { 3342 MAILBOX_t *mb = &pmb->u.mb; 3343 struct lpfc_vport *vport = pmb->vport; 3344 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 3345 3346 switch (mb->mbxStatus) { 3347 case 0x0011: 3348 case 0x0020: 3349 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE, 3350 "0911 cmpl_unreg_vpi, mb status = 0x%x\n", 3351 mb->mbxStatus); 3352 break; 3353 /* If VPI is busy, reset the HBA */ 3354 case 0x9700: 3355 lpfc_printf_vlog(vport, KERN_ERR, LOG_NODE, 3356 "2798 Unreg_vpi failed vpi 0x%x, mb status = 0x%x\n", 3357 vport->vpi, mb->mbxStatus); 3358 if (!(phba->pport->load_flag & FC_UNLOADING)) 3359 lpfc_workq_post_event(phba, NULL, NULL, 3360 LPFC_EVT_RESET_HBA); 3361 } 3362 spin_lock_irq(shost->host_lock); 3363 vport->vpi_state &= ~LPFC_VPI_REGISTERED; 3364 vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI; 3365 spin_unlock_irq(shost->host_lock); 3366 vport->unreg_vpi_cmpl = VPORT_OK; 3367 mempool_free(pmb, phba->mbox_mem_pool); 3368 lpfc_cleanup_vports_rrqs(vport, NULL); 3369 /* 3370 * This shost reference might have been taken at the beginning of 3371 * lpfc_vport_delete() 3372 */ 3373 if ((vport->load_flag & FC_UNLOADING) && (vport != phba->pport)) 3374 scsi_host_put(shost); 3375 } 3376 3377 int 3378 lpfc_mbx_unreg_vpi(struct lpfc_vport *vport) 3379 { 3380 struct lpfc_hba *phba = vport->phba; 3381 LPFC_MBOXQ_t *mbox; 3382 int rc; 3383 3384 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 3385 if (!mbox) 3386 return 1; 3387 3388 lpfc_unreg_vpi(phba, vport->vpi, mbox); 3389 mbox->vport = vport; 3390 mbox->mbox_cmpl = lpfc_mbx_cmpl_unreg_vpi; 3391 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT); 3392 if (rc == MBX_NOT_FINISHED) { 3393 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX | LOG_VPORT, 3394 "1800 Could not issue unreg_vpi\n"); 3395 mempool_free(mbox, phba->mbox_mem_pool); 3396 vport->unreg_vpi_cmpl = VPORT_ERROR; 3397 return rc; 3398 } 3399 return 0; 3400 } 3401 3402 static void 3403 lpfc_mbx_cmpl_reg_vpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 3404 { 3405 struct lpfc_vport *vport = pmb->vport; 3406 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 3407 MAILBOX_t *mb = &pmb->u.mb; 3408 3409 switch (mb->mbxStatus) { 3410 case 0x0011: 3411 case 0x9601: 3412 case 0x9602: 3413 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE, 3414 "0912 cmpl_reg_vpi, mb status = 0x%x\n", 3415 mb->mbxStatus); 3416 lpfc_vport_set_state(vport, FC_VPORT_FAILED); 3417 spin_lock_irq(shost->host_lock); 3418 vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP); 3419 spin_unlock_irq(shost->host_lock); 3420 vport->fc_myDID = 0; 3421 goto out; 3422 } 3423 3424 spin_lock_irq(shost->host_lock); 3425 vport->vpi_state |= LPFC_VPI_REGISTERED; 3426 vport->fc_flag &= ~FC_VPORT_NEEDS_REG_VPI; 3427 spin_unlock_irq(shost->host_lock); 3428 vport->num_disc_nodes = 0; 3429 /* go thru NPR list and issue ELS PLOGIs */ 3430 if (vport->fc_npr_cnt) 3431 lpfc_els_disc_plogi(vport); 3432 3433 if (!vport->num_disc_nodes) { 3434 spin_lock_irq(shost->host_lock); 3435 vport->fc_flag &= ~FC_NDISC_ACTIVE; 3436 spin_unlock_irq(shost->host_lock); 3437 lpfc_can_disctmo(vport); 3438 } 3439 vport->port_state = LPFC_VPORT_READY; 3440 3441 out: 3442 mempool_free(pmb, phba->mbox_mem_pool); 3443 return; 3444 } 3445 3446 /** 3447 * lpfc_create_static_vport - Read HBA config region to create static vports. 3448 * @phba: pointer to lpfc hba data structure. 3449 * 3450 * This routine issue a DUMP mailbox command for config region 22 to get 3451 * the list of static vports to be created. The function create vports 3452 * based on the information returned from the HBA. 3453 **/ 3454 void 3455 lpfc_create_static_vport(struct lpfc_hba *phba) 3456 { 3457 LPFC_MBOXQ_t *pmb = NULL; 3458 MAILBOX_t *mb; 3459 struct static_vport_info *vport_info; 3460 int rc = 0, i; 3461 struct fc_vport_identifiers vport_id; 3462 struct fc_vport *new_fc_vport; 3463 struct Scsi_Host *shost; 3464 struct lpfc_vport *vport; 3465 uint16_t offset = 0; 3466 uint8_t *vport_buff; 3467 struct lpfc_dmabuf *mp; 3468 uint32_t byte_count = 0; 3469 3470 pmb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 3471 if (!pmb) { 3472 lpfc_printf_log(phba, KERN_ERR, LOG_INIT, 3473 "0542 lpfc_create_static_vport failed to" 3474 " allocate mailbox memory\n"); 3475 return; 3476 } 3477 3478 mb = &pmb->u.mb; 3479 3480 vport_info = kzalloc(sizeof(struct static_vport_info), GFP_KERNEL); 3481 if (!vport_info) { 3482 lpfc_printf_log(phba, KERN_ERR, LOG_INIT, 3483 "0543 lpfc_create_static_vport failed to" 3484 " allocate vport_info\n"); 3485 mempool_free(pmb, phba->mbox_mem_pool); 3486 return; 3487 } 3488 3489 vport_buff = (uint8_t *) vport_info; 3490 do { 3491 if (lpfc_dump_static_vport(phba, pmb, offset)) 3492 goto out; 3493 3494 pmb->vport = phba->pport; 3495 rc = lpfc_sli_issue_mbox_wait(phba, pmb, LPFC_MBOX_TMO); 3496 3497 if ((rc != MBX_SUCCESS) || mb->mbxStatus) { 3498 lpfc_printf_log(phba, KERN_WARNING, LOG_INIT, 3499 "0544 lpfc_create_static_vport failed to" 3500 " issue dump mailbox command ret 0x%x " 3501 "status 0x%x\n", 3502 rc, mb->mbxStatus); 3503 goto out; 3504 } 3505 3506 if (phba->sli_rev == LPFC_SLI_REV4) { 3507 byte_count = pmb->u.mqe.un.mb_words[5]; 3508 mp = (struct lpfc_dmabuf *) pmb->context2; 3509 if (byte_count > sizeof(struct static_vport_info) - 3510 offset) 3511 byte_count = sizeof(struct static_vport_info) 3512 - offset; 3513 memcpy(vport_buff + offset, mp->virt, byte_count); 3514 offset += byte_count; 3515 } else { 3516 if (mb->un.varDmp.word_cnt > 3517 sizeof(struct static_vport_info) - offset) 3518 mb->un.varDmp.word_cnt = 3519 sizeof(struct static_vport_info) 3520 - offset; 3521 byte_count = mb->un.varDmp.word_cnt; 3522 lpfc_sli_pcimem_bcopy(((uint8_t *)mb) + DMP_RSP_OFFSET, 3523 vport_buff + offset, 3524 byte_count); 3525 3526 offset += byte_count; 3527 } 3528 3529 } while (byte_count && 3530 offset < sizeof(struct static_vport_info)); 3531 3532 3533 if ((le32_to_cpu(vport_info->signature) != VPORT_INFO_SIG) || 3534 ((le32_to_cpu(vport_info->rev) & VPORT_INFO_REV_MASK) 3535 != VPORT_INFO_REV)) { 3536 lpfc_printf_log(phba, KERN_ERR, LOG_INIT, 3537 "0545 lpfc_create_static_vport bad" 3538 " information header 0x%x 0x%x\n", 3539 le32_to_cpu(vport_info->signature), 3540 le32_to_cpu(vport_info->rev) & VPORT_INFO_REV_MASK); 3541 3542 goto out; 3543 } 3544 3545 shost = lpfc_shost_from_vport(phba->pport); 3546 3547 for (i = 0; i < MAX_STATIC_VPORT_COUNT; i++) { 3548 memset(&vport_id, 0, sizeof(vport_id)); 3549 vport_id.port_name = wwn_to_u64(vport_info->vport_list[i].wwpn); 3550 vport_id.node_name = wwn_to_u64(vport_info->vport_list[i].wwnn); 3551 if (!vport_id.port_name || !vport_id.node_name) 3552 continue; 3553 3554 vport_id.roles = FC_PORT_ROLE_FCP_INITIATOR; 3555 vport_id.vport_type = FC_PORTTYPE_NPIV; 3556 vport_id.disable = false; 3557 new_fc_vport = fc_vport_create(shost, 0, &vport_id); 3558 3559 if (!new_fc_vport) { 3560 lpfc_printf_log(phba, KERN_WARNING, LOG_INIT, 3561 "0546 lpfc_create_static_vport failed to" 3562 " create vport\n"); 3563 continue; 3564 } 3565 3566 vport = *(struct lpfc_vport **)new_fc_vport->dd_data; 3567 vport->vport_flag |= STATIC_VPORT; 3568 } 3569 3570 out: 3571 kfree(vport_info); 3572 if (rc != MBX_TIMEOUT) { 3573 if (pmb->context2) { 3574 mp = (struct lpfc_dmabuf *) pmb->context2; 3575 lpfc_mbuf_free(phba, mp->virt, mp->phys); 3576 kfree(mp); 3577 } 3578 mempool_free(pmb, phba->mbox_mem_pool); 3579 } 3580 3581 return; 3582 } 3583 3584 /* 3585 * This routine handles processing a Fabric REG_LOGIN mailbox 3586 * command upon completion. It is setup in the LPFC_MBOXQ 3587 * as the completion routine when the command is 3588 * handed off to the SLI layer. 3589 */ 3590 void 3591 lpfc_mbx_cmpl_fabric_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 3592 { 3593 struct lpfc_vport *vport = pmb->vport; 3594 MAILBOX_t *mb = &pmb->u.mb; 3595 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1); 3596 struct lpfc_nodelist *ndlp; 3597 3598 ndlp = (struct lpfc_nodelist *) pmb->context2; 3599 pmb->context1 = NULL; 3600 pmb->context2 = NULL; 3601 3602 if (mb->mbxStatus) { 3603 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX, 3604 "0258 Register Fabric login error: 0x%x\n", 3605 mb->mbxStatus); 3606 lpfc_mbuf_free(phba, mp->virt, mp->phys); 3607 kfree(mp); 3608 mempool_free(pmb, phba->mbox_mem_pool); 3609 3610 if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) { 3611 /* FLOGI failed, use loop map to make discovery list */ 3612 lpfc_disc_list_loopmap(vport); 3613 3614 /* Start discovery */ 3615 lpfc_disc_start(vport); 3616 /* Decrement the reference count to ndlp after the 3617 * reference to the ndlp are done. 3618 */ 3619 lpfc_nlp_put(ndlp); 3620 return; 3621 } 3622 3623 lpfc_vport_set_state(vport, FC_VPORT_FAILED); 3624 /* Decrement the reference count to ndlp after the reference 3625 * to the ndlp are done. 3626 */ 3627 lpfc_nlp_put(ndlp); 3628 return; 3629 } 3630 3631 if (phba->sli_rev < LPFC_SLI_REV4) 3632 ndlp->nlp_rpi = mb->un.varWords[0]; 3633 ndlp->nlp_flag |= NLP_RPI_REGISTERED; 3634 ndlp->nlp_type |= NLP_FABRIC; 3635 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE); 3636 3637 if (vport->port_state == LPFC_FABRIC_CFG_LINK) { 3638 /* when physical port receive logo donot start 3639 * vport discovery */ 3640 if (!(vport->fc_flag & FC_LOGO_RCVD_DID_CHNG)) 3641 lpfc_start_fdiscs(phba); 3642 else 3643 vport->fc_flag &= ~FC_LOGO_RCVD_DID_CHNG ; 3644 lpfc_do_scr_ns_plogi(phba, vport); 3645 } 3646 3647 lpfc_mbuf_free(phba, mp->virt, mp->phys); 3648 kfree(mp); 3649 mempool_free(pmb, phba->mbox_mem_pool); 3650 3651 /* Drop the reference count from the mbox at the end after 3652 * all the current reference to the ndlp have been done. 3653 */ 3654 lpfc_nlp_put(ndlp); 3655 return; 3656 } 3657 3658 /* 3659 * This routine handles processing a NameServer REG_LOGIN mailbox 3660 * command upon completion. It is setup in the LPFC_MBOXQ 3661 * as the completion routine when the command is 3662 * handed off to the SLI layer. 3663 */ 3664 void 3665 lpfc_mbx_cmpl_ns_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 3666 { 3667 MAILBOX_t *mb = &pmb->u.mb; 3668 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1); 3669 struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) pmb->context2; 3670 struct lpfc_vport *vport = pmb->vport; 3671 3672 pmb->context1 = NULL; 3673 pmb->context2 = NULL; 3674 3675 if (mb->mbxStatus) { 3676 out: 3677 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS, 3678 "0260 Register NameServer error: 0x%x\n", 3679 mb->mbxStatus); 3680 /* decrement the node reference count held for this 3681 * callback function. 3682 */ 3683 lpfc_nlp_put(ndlp); 3684 lpfc_mbuf_free(phba, mp->virt, mp->phys); 3685 kfree(mp); 3686 mempool_free(pmb, phba->mbox_mem_pool); 3687 3688 /* If no other thread is using the ndlp, free it */ 3689 lpfc_nlp_not_used(ndlp); 3690 3691 if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) { 3692 /* 3693 * RegLogin failed, use loop map to make discovery 3694 * list 3695 */ 3696 lpfc_disc_list_loopmap(vport); 3697 3698 /* Start discovery */ 3699 lpfc_disc_start(vport); 3700 return; 3701 } 3702 lpfc_vport_set_state(vport, FC_VPORT_FAILED); 3703 return; 3704 } 3705 3706 if (phba->sli_rev < LPFC_SLI_REV4) 3707 ndlp->nlp_rpi = mb->un.varWords[0]; 3708 ndlp->nlp_flag |= NLP_RPI_REGISTERED; 3709 ndlp->nlp_type |= NLP_FABRIC; 3710 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE); 3711 3712 if (vport->port_state < LPFC_VPORT_READY) { 3713 /* Link up discovery requires Fabric registration. */ 3714 lpfc_ns_cmd(vport, SLI_CTNS_RFF_ID, 0, 0); /* Do this first! */ 3715 lpfc_ns_cmd(vport, SLI_CTNS_RNN_ID, 0, 0); 3716 lpfc_ns_cmd(vport, SLI_CTNS_RSNN_NN, 0, 0); 3717 lpfc_ns_cmd(vport, SLI_CTNS_RSPN_ID, 0, 0); 3718 lpfc_ns_cmd(vport, SLI_CTNS_RFT_ID, 0, 0); 3719 3720 /* Issue SCR just before NameServer GID_FT Query */ 3721 lpfc_issue_els_scr(vport, SCR_DID, 0); 3722 } 3723 3724 vport->fc_ns_retry = 0; 3725 /* Good status, issue CT Request to NameServer */ 3726 if (lpfc_ns_cmd(vport, SLI_CTNS_GID_FT, 0, 0)) { 3727 /* Cannot issue NameServer Query, so finish up discovery */ 3728 goto out; 3729 } 3730 3731 /* decrement the node reference count held for this 3732 * callback function. 3733 */ 3734 lpfc_nlp_put(ndlp); 3735 lpfc_mbuf_free(phba, mp->virt, mp->phys); 3736 kfree(mp); 3737 mempool_free(pmb, phba->mbox_mem_pool); 3738 3739 return; 3740 } 3741 3742 static void 3743 lpfc_register_remote_port(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) 3744 { 3745 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 3746 struct fc_rport *rport; 3747 struct lpfc_rport_data *rdata; 3748 struct fc_rport_identifiers rport_ids; 3749 struct lpfc_hba *phba = vport->phba; 3750 3751 /* Remote port has reappeared. Re-register w/ FC transport */ 3752 rport_ids.node_name = wwn_to_u64(ndlp->nlp_nodename.u.wwn); 3753 rport_ids.port_name = wwn_to_u64(ndlp->nlp_portname.u.wwn); 3754 rport_ids.port_id = ndlp->nlp_DID; 3755 rport_ids.roles = FC_RPORT_ROLE_UNKNOWN; 3756 3757 /* 3758 * We leave our node pointer in rport->dd_data when we unregister a 3759 * FCP target port. But fc_remote_port_add zeros the space to which 3760 * rport->dd_data points. So, if we're reusing a previously 3761 * registered port, drop the reference that we took the last time we 3762 * registered the port. 3763 */ 3764 if (ndlp->rport && ndlp->rport->dd_data && 3765 ((struct lpfc_rport_data *) ndlp->rport->dd_data)->pnode == ndlp) 3766 lpfc_nlp_put(ndlp); 3767 3768 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT, 3769 "rport add: did:x%x flg:x%x type x%x", 3770 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type); 3771 3772 /* Don't add the remote port if unloading. */ 3773 if (vport->load_flag & FC_UNLOADING) 3774 return; 3775 3776 ndlp->rport = rport = fc_remote_port_add(shost, 0, &rport_ids); 3777 if (!rport || !get_device(&rport->dev)) { 3778 dev_printk(KERN_WARNING, &phba->pcidev->dev, 3779 "Warning: fc_remote_port_add failed\n"); 3780 return; 3781 } 3782 3783 /* initialize static port data */ 3784 rport->maxframe_size = ndlp->nlp_maxframe; 3785 rport->supported_classes = ndlp->nlp_class_sup; 3786 rdata = rport->dd_data; 3787 rdata->pnode = lpfc_nlp_get(ndlp); 3788 3789 if (ndlp->nlp_type & NLP_FCP_TARGET) 3790 rport_ids.roles |= FC_RPORT_ROLE_FCP_TARGET; 3791 if (ndlp->nlp_type & NLP_FCP_INITIATOR) 3792 rport_ids.roles |= FC_RPORT_ROLE_FCP_INITIATOR; 3793 3794 if (rport_ids.roles != FC_RPORT_ROLE_UNKNOWN) 3795 fc_remote_port_rolechg(rport, rport_ids.roles); 3796 3797 if ((rport->scsi_target_id != -1) && 3798 (rport->scsi_target_id < LPFC_MAX_TARGET)) { 3799 ndlp->nlp_sid = rport->scsi_target_id; 3800 } 3801 return; 3802 } 3803 3804 static void 3805 lpfc_unregister_remote_port(struct lpfc_nodelist *ndlp) 3806 { 3807 struct fc_rport *rport = ndlp->rport; 3808 3809 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_RPORT, 3810 "rport delete: did:x%x flg:x%x type x%x", 3811 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type); 3812 3813 fc_remote_port_delete(rport); 3814 3815 return; 3816 } 3817 3818 static void 3819 lpfc_nlp_counters(struct lpfc_vport *vport, int state, int count) 3820 { 3821 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 3822 3823 spin_lock_irq(shost->host_lock); 3824 switch (state) { 3825 case NLP_STE_UNUSED_NODE: 3826 vport->fc_unused_cnt += count; 3827 break; 3828 case NLP_STE_PLOGI_ISSUE: 3829 vport->fc_plogi_cnt += count; 3830 break; 3831 case NLP_STE_ADISC_ISSUE: 3832 vport->fc_adisc_cnt += count; 3833 break; 3834 case NLP_STE_REG_LOGIN_ISSUE: 3835 vport->fc_reglogin_cnt += count; 3836 break; 3837 case NLP_STE_PRLI_ISSUE: 3838 vport->fc_prli_cnt += count; 3839 break; 3840 case NLP_STE_UNMAPPED_NODE: 3841 vport->fc_unmap_cnt += count; 3842 break; 3843 case NLP_STE_MAPPED_NODE: 3844 vport->fc_map_cnt += count; 3845 break; 3846 case NLP_STE_NPR_NODE: 3847 vport->fc_npr_cnt += count; 3848 break; 3849 } 3850 spin_unlock_irq(shost->host_lock); 3851 } 3852 3853 static void 3854 lpfc_nlp_state_cleanup(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 3855 int old_state, int new_state) 3856 { 3857 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 3858 3859 if (new_state == NLP_STE_UNMAPPED_NODE) { 3860 ndlp->nlp_flag &= ~NLP_NODEV_REMOVE; 3861 ndlp->nlp_type |= NLP_FC_NODE; 3862 } 3863 if (new_state == NLP_STE_MAPPED_NODE) 3864 ndlp->nlp_flag &= ~NLP_NODEV_REMOVE; 3865 if (new_state == NLP_STE_NPR_NODE) 3866 ndlp->nlp_flag &= ~NLP_RCV_PLOGI; 3867 3868 /* Transport interface */ 3869 if (ndlp->rport && (old_state == NLP_STE_MAPPED_NODE || 3870 old_state == NLP_STE_UNMAPPED_NODE)) { 3871 vport->phba->nport_event_cnt++; 3872 lpfc_unregister_remote_port(ndlp); 3873 } 3874 3875 if (new_state == NLP_STE_MAPPED_NODE || 3876 new_state == NLP_STE_UNMAPPED_NODE) { 3877 vport->phba->nport_event_cnt++; 3878 /* 3879 * Tell the fc transport about the port, if we haven't 3880 * already. If we have, and it's a scsi entity, be 3881 * sure to unblock any attached scsi devices 3882 */ 3883 lpfc_register_remote_port(vport, ndlp); 3884 } 3885 if ((new_state == NLP_STE_MAPPED_NODE) && 3886 (vport->stat_data_enabled)) { 3887 /* 3888 * A new target is discovered, if there is no buffer for 3889 * statistical data collection allocate buffer. 3890 */ 3891 ndlp->lat_data = kcalloc(LPFC_MAX_BUCKET_COUNT, 3892 sizeof(struct lpfc_scsicmd_bkt), 3893 GFP_KERNEL); 3894 3895 if (!ndlp->lat_data) 3896 lpfc_printf_vlog(vport, KERN_ERR, LOG_NODE, 3897 "0286 lpfc_nlp_state_cleanup failed to " 3898 "allocate statistical data buffer DID " 3899 "0x%x\n", ndlp->nlp_DID); 3900 } 3901 /* 3902 * if we added to Mapped list, but the remote port 3903 * registration failed or assigned a target id outside 3904 * our presentable range - move the node to the 3905 * Unmapped List 3906 */ 3907 if (new_state == NLP_STE_MAPPED_NODE && 3908 (!ndlp->rport || 3909 ndlp->rport->scsi_target_id == -1 || 3910 ndlp->rport->scsi_target_id >= LPFC_MAX_TARGET)) { 3911 spin_lock_irq(shost->host_lock); 3912 ndlp->nlp_flag |= NLP_TGT_NO_SCSIID; 3913 spin_unlock_irq(shost->host_lock); 3914 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE); 3915 } 3916 } 3917 3918 static char * 3919 lpfc_nlp_state_name(char *buffer, size_t size, int state) 3920 { 3921 static char *states[] = { 3922 [NLP_STE_UNUSED_NODE] = "UNUSED", 3923 [NLP_STE_PLOGI_ISSUE] = "PLOGI", 3924 [NLP_STE_ADISC_ISSUE] = "ADISC", 3925 [NLP_STE_REG_LOGIN_ISSUE] = "REGLOGIN", 3926 [NLP_STE_PRLI_ISSUE] = "PRLI", 3927 [NLP_STE_UNMAPPED_NODE] = "UNMAPPED", 3928 [NLP_STE_MAPPED_NODE] = "MAPPED", 3929 [NLP_STE_NPR_NODE] = "NPR", 3930 }; 3931 3932 if (state < NLP_STE_MAX_STATE && states[state]) 3933 strlcpy(buffer, states[state], size); 3934 else 3935 snprintf(buffer, size, "unknown (%d)", state); 3936 return buffer; 3937 } 3938 3939 void 3940 lpfc_nlp_set_state(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 3941 int state) 3942 { 3943 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 3944 int old_state = ndlp->nlp_state; 3945 char name1[16], name2[16]; 3946 3947 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE, 3948 "0904 NPort state transition x%06x, %s -> %s\n", 3949 ndlp->nlp_DID, 3950 lpfc_nlp_state_name(name1, sizeof(name1), old_state), 3951 lpfc_nlp_state_name(name2, sizeof(name2), state)); 3952 3953 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE, 3954 "node statechg did:x%x old:%d ste:%d", 3955 ndlp->nlp_DID, old_state, state); 3956 3957 if (old_state == NLP_STE_NPR_NODE && 3958 state != NLP_STE_NPR_NODE) 3959 lpfc_cancel_retry_delay_tmo(vport, ndlp); 3960 if (old_state == NLP_STE_UNMAPPED_NODE) { 3961 ndlp->nlp_flag &= ~NLP_TGT_NO_SCSIID; 3962 ndlp->nlp_type &= ~NLP_FC_NODE; 3963 } 3964 3965 if (list_empty(&ndlp->nlp_listp)) { 3966 spin_lock_irq(shost->host_lock); 3967 list_add_tail(&ndlp->nlp_listp, &vport->fc_nodes); 3968 spin_unlock_irq(shost->host_lock); 3969 } else if (old_state) 3970 lpfc_nlp_counters(vport, old_state, -1); 3971 3972 ndlp->nlp_state = state; 3973 lpfc_nlp_counters(vport, state, 1); 3974 lpfc_nlp_state_cleanup(vport, ndlp, old_state, state); 3975 } 3976 3977 void 3978 lpfc_enqueue_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) 3979 { 3980 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 3981 3982 if (list_empty(&ndlp->nlp_listp)) { 3983 spin_lock_irq(shost->host_lock); 3984 list_add_tail(&ndlp->nlp_listp, &vport->fc_nodes); 3985 spin_unlock_irq(shost->host_lock); 3986 } 3987 } 3988 3989 void 3990 lpfc_dequeue_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) 3991 { 3992 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 3993 3994 lpfc_cancel_retry_delay_tmo(vport, ndlp); 3995 if (ndlp->nlp_state && !list_empty(&ndlp->nlp_listp)) 3996 lpfc_nlp_counters(vport, ndlp->nlp_state, -1); 3997 spin_lock_irq(shost->host_lock); 3998 list_del_init(&ndlp->nlp_listp); 3999 spin_unlock_irq(shost->host_lock); 4000 lpfc_nlp_state_cleanup(vport, ndlp, ndlp->nlp_state, 4001 NLP_STE_UNUSED_NODE); 4002 } 4003 4004 static void 4005 lpfc_disable_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) 4006 { 4007 lpfc_cancel_retry_delay_tmo(vport, ndlp); 4008 if (ndlp->nlp_state && !list_empty(&ndlp->nlp_listp)) 4009 lpfc_nlp_counters(vport, ndlp->nlp_state, -1); 4010 lpfc_nlp_state_cleanup(vport, ndlp, ndlp->nlp_state, 4011 NLP_STE_UNUSED_NODE); 4012 } 4013 /** 4014 * lpfc_initialize_node - Initialize all fields of node object 4015 * @vport: Pointer to Virtual Port object. 4016 * @ndlp: Pointer to FC node object. 4017 * @did: FC_ID of the node. 4018 * 4019 * This function is always called when node object need to be initialized. 4020 * It initializes all the fields of the node object. Although the reference 4021 * to phba from @ndlp can be obtained indirectly through it's reference to 4022 * @vport, a direct reference to phba is taken here by @ndlp. This is due 4023 * to the life-span of the @ndlp might go beyond the existence of @vport as 4024 * the final release of ndlp is determined by its reference count. And, the 4025 * operation on @ndlp needs the reference to phba. 4026 **/ 4027 static inline void 4028 lpfc_initialize_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 4029 uint32_t did) 4030 { 4031 INIT_LIST_HEAD(&ndlp->els_retry_evt.evt_listp); 4032 INIT_LIST_HEAD(&ndlp->dev_loss_evt.evt_listp); 4033 init_timer(&ndlp->nlp_delayfunc); 4034 ndlp->nlp_delayfunc.function = lpfc_els_retry_delay; 4035 ndlp->nlp_delayfunc.data = (unsigned long)ndlp; 4036 ndlp->nlp_DID = did; 4037 ndlp->vport = vport; 4038 ndlp->phba = vport->phba; 4039 ndlp->nlp_sid = NLP_NO_SID; 4040 kref_init(&ndlp->kref); 4041 NLP_INT_NODE_ACT(ndlp); 4042 atomic_set(&ndlp->cmd_pending, 0); 4043 ndlp->cmd_qdepth = vport->cfg_tgt_queue_depth; 4044 if (vport->phba->sli_rev == LPFC_SLI_REV4) 4045 ndlp->nlp_rpi = lpfc_sli4_alloc_rpi(vport->phba); 4046 } 4047 4048 struct lpfc_nodelist * 4049 lpfc_enable_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 4050 int state) 4051 { 4052 struct lpfc_hba *phba = vport->phba; 4053 uint32_t did; 4054 unsigned long flags; 4055 4056 if (!ndlp) 4057 return NULL; 4058 4059 spin_lock_irqsave(&phba->ndlp_lock, flags); 4060 /* The ndlp should not be in memory free mode */ 4061 if (NLP_CHK_FREE_REQ(ndlp)) { 4062 spin_unlock_irqrestore(&phba->ndlp_lock, flags); 4063 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NODE, 4064 "0277 lpfc_enable_node: ndlp:x%p " 4065 "usgmap:x%x refcnt:%d\n", 4066 (void *)ndlp, ndlp->nlp_usg_map, 4067 atomic_read(&ndlp->kref.refcount)); 4068 return NULL; 4069 } 4070 /* The ndlp should not already be in active mode */ 4071 if (NLP_CHK_NODE_ACT(ndlp)) { 4072 spin_unlock_irqrestore(&phba->ndlp_lock, flags); 4073 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NODE, 4074 "0278 lpfc_enable_node: ndlp:x%p " 4075 "usgmap:x%x refcnt:%d\n", 4076 (void *)ndlp, ndlp->nlp_usg_map, 4077 atomic_read(&ndlp->kref.refcount)); 4078 return NULL; 4079 } 4080 4081 /* Keep the original DID */ 4082 did = ndlp->nlp_DID; 4083 4084 /* re-initialize ndlp except of ndlp linked list pointer */ 4085 memset((((char *)ndlp) + sizeof (struct list_head)), 0, 4086 sizeof (struct lpfc_nodelist) - sizeof (struct list_head)); 4087 lpfc_initialize_node(vport, ndlp, did); 4088 4089 spin_unlock_irqrestore(&phba->ndlp_lock, flags); 4090 4091 if (state != NLP_STE_UNUSED_NODE) 4092 lpfc_nlp_set_state(vport, ndlp, state); 4093 4094 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE, 4095 "node enable: did:x%x", 4096 ndlp->nlp_DID, 0, 0); 4097 return ndlp; 4098 } 4099 4100 void 4101 lpfc_drop_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) 4102 { 4103 /* 4104 * Use of lpfc_drop_node and UNUSED list: lpfc_drop_node should 4105 * be used if we wish to issue the "last" lpfc_nlp_put() to remove 4106 * the ndlp from the vport. The ndlp marked as UNUSED on the list 4107 * until ALL other outstanding threads have completed. We check 4108 * that the ndlp not already in the UNUSED state before we proceed. 4109 */ 4110 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE) 4111 return; 4112 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNUSED_NODE); 4113 if (vport->phba->sli_rev == LPFC_SLI_REV4) 4114 lpfc_cleanup_vports_rrqs(vport, ndlp); 4115 lpfc_nlp_put(ndlp); 4116 return; 4117 } 4118 4119 /* 4120 * Start / ReStart rescue timer for Discovery / RSCN handling 4121 */ 4122 void 4123 lpfc_set_disctmo(struct lpfc_vport *vport) 4124 { 4125 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 4126 struct lpfc_hba *phba = vport->phba; 4127 uint32_t tmo; 4128 4129 if (vport->port_state == LPFC_LOCAL_CFG_LINK) { 4130 /* For FAN, timeout should be greater than edtov */ 4131 tmo = (((phba->fc_edtov + 999) / 1000) + 1); 4132 } else { 4133 /* Normal discovery timeout should be > than ELS/CT timeout 4134 * FC spec states we need 3 * ratov for CT requests 4135 */ 4136 tmo = ((phba->fc_ratov * 3) + 3); 4137 } 4138 4139 4140 if (!timer_pending(&vport->fc_disctmo)) { 4141 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, 4142 "set disc timer: tmo:x%x state:x%x flg:x%x", 4143 tmo, vport->port_state, vport->fc_flag); 4144 } 4145 4146 mod_timer(&vport->fc_disctmo, jiffies + HZ * tmo); 4147 spin_lock_irq(shost->host_lock); 4148 vport->fc_flag |= FC_DISC_TMO; 4149 spin_unlock_irq(shost->host_lock); 4150 4151 /* Start Discovery Timer state <hba_state> */ 4152 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, 4153 "0247 Start Discovery Timer state x%x " 4154 "Data: x%x x%lx x%x x%x\n", 4155 vport->port_state, tmo, 4156 (unsigned long)&vport->fc_disctmo, vport->fc_plogi_cnt, 4157 vport->fc_adisc_cnt); 4158 4159 return; 4160 } 4161 4162 /* 4163 * Cancel rescue timer for Discovery / RSCN handling 4164 */ 4165 int 4166 lpfc_can_disctmo(struct lpfc_vport *vport) 4167 { 4168 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 4169 unsigned long iflags; 4170 4171 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, 4172 "can disc timer: state:x%x rtry:x%x flg:x%x", 4173 vport->port_state, vport->fc_ns_retry, vport->fc_flag); 4174 4175 /* Turn off discovery timer if its running */ 4176 if (vport->fc_flag & FC_DISC_TMO) { 4177 spin_lock_irqsave(shost->host_lock, iflags); 4178 vport->fc_flag &= ~FC_DISC_TMO; 4179 spin_unlock_irqrestore(shost->host_lock, iflags); 4180 del_timer_sync(&vport->fc_disctmo); 4181 spin_lock_irqsave(&vport->work_port_lock, iflags); 4182 vport->work_port_events &= ~WORKER_DISC_TMO; 4183 spin_unlock_irqrestore(&vport->work_port_lock, iflags); 4184 } 4185 4186 /* Cancel Discovery Timer state <hba_state> */ 4187 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, 4188 "0248 Cancel Discovery Timer state x%x " 4189 "Data: x%x x%x x%x\n", 4190 vport->port_state, vport->fc_flag, 4191 vport->fc_plogi_cnt, vport->fc_adisc_cnt); 4192 return 0; 4193 } 4194 4195 /* 4196 * Check specified ring for outstanding IOCB on the SLI queue 4197 * Return true if iocb matches the specified nport 4198 */ 4199 int 4200 lpfc_check_sli_ndlp(struct lpfc_hba *phba, 4201 struct lpfc_sli_ring *pring, 4202 struct lpfc_iocbq *iocb, 4203 struct lpfc_nodelist *ndlp) 4204 { 4205 struct lpfc_sli *psli = &phba->sli; 4206 IOCB_t *icmd = &iocb->iocb; 4207 struct lpfc_vport *vport = ndlp->vport; 4208 4209 if (iocb->vport != vport) 4210 return 0; 4211 4212 if (pring->ringno == LPFC_ELS_RING) { 4213 switch (icmd->ulpCommand) { 4214 case CMD_GEN_REQUEST64_CR: 4215 if (iocb->context_un.ndlp == ndlp) 4216 return 1; 4217 case CMD_ELS_REQUEST64_CR: 4218 if (icmd->un.elsreq64.remoteID == ndlp->nlp_DID) 4219 return 1; 4220 case CMD_XMIT_ELS_RSP64_CX: 4221 if (iocb->context1 == (uint8_t *) ndlp) 4222 return 1; 4223 } 4224 } else if (pring->ringno == psli->extra_ring) { 4225 4226 } else if (pring->ringno == psli->fcp_ring) { 4227 /* Skip match check if waiting to relogin to FCP target */ 4228 if ((ndlp->nlp_type & NLP_FCP_TARGET) && 4229 (ndlp->nlp_flag & NLP_DELAY_TMO)) { 4230 return 0; 4231 } 4232 if (icmd->ulpContext == (volatile ushort)ndlp->nlp_rpi) { 4233 return 1; 4234 } 4235 } else if (pring->ringno == psli->next_ring) { 4236 4237 } 4238 return 0; 4239 } 4240 4241 /* 4242 * Free resources / clean up outstanding I/Os 4243 * associated with nlp_rpi in the LPFC_NODELIST entry. 4244 */ 4245 static int 4246 lpfc_no_rpi(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp) 4247 { 4248 LIST_HEAD(completions); 4249 struct lpfc_sli *psli; 4250 struct lpfc_sli_ring *pring; 4251 struct lpfc_iocbq *iocb, *next_iocb; 4252 uint32_t i; 4253 4254 lpfc_fabric_abort_nport(ndlp); 4255 4256 /* 4257 * Everything that matches on txcmplq will be returned 4258 * by firmware with a no rpi error. 4259 */ 4260 psli = &phba->sli; 4261 if (ndlp->nlp_flag & NLP_RPI_REGISTERED) { 4262 /* Now process each ring */ 4263 for (i = 0; i < psli->num_rings; i++) { 4264 pring = &psli->ring[i]; 4265 4266 spin_lock_irq(&phba->hbalock); 4267 list_for_each_entry_safe(iocb, next_iocb, &pring->txq, 4268 list) { 4269 /* 4270 * Check to see if iocb matches the nport we are 4271 * looking for 4272 */ 4273 if ((lpfc_check_sli_ndlp(phba, pring, iocb, 4274 ndlp))) { 4275 /* It matches, so deque and call compl 4276 with an error */ 4277 list_move_tail(&iocb->list, 4278 &completions); 4279 pring->txq_cnt--; 4280 } 4281 } 4282 spin_unlock_irq(&phba->hbalock); 4283 } 4284 } 4285 4286 /* Cancel all the IOCBs from the completions list */ 4287 lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT, 4288 IOERR_SLI_ABORTED); 4289 4290 return 0; 4291 } 4292 4293 /* 4294 * Free rpi associated with LPFC_NODELIST entry. 4295 * This routine is called from lpfc_freenode(), when we are removing 4296 * a LPFC_NODELIST entry. It is also called if the driver initiates a 4297 * LOGO that completes successfully, and we are waiting to PLOGI back 4298 * to the remote NPort. In addition, it is called after we receive 4299 * and unsolicated ELS cmd, send back a rsp, the rsp completes and 4300 * we are waiting to PLOGI back to the remote NPort. 4301 */ 4302 int 4303 lpfc_unreg_rpi(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) 4304 { 4305 struct lpfc_hba *phba = vport->phba; 4306 LPFC_MBOXQ_t *mbox; 4307 int rc; 4308 uint16_t rpi; 4309 4310 if (ndlp->nlp_flag & NLP_RPI_REGISTERED) { 4311 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 4312 if (mbox) { 4313 /* SLI4 ports require the physical rpi value. */ 4314 rpi = ndlp->nlp_rpi; 4315 if (phba->sli_rev == LPFC_SLI_REV4) 4316 rpi = phba->sli4_hba.rpi_ids[ndlp->nlp_rpi]; 4317 lpfc_unreg_login(phba, vport->vpi, rpi, mbox); 4318 mbox->vport = vport; 4319 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl; 4320 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT); 4321 if (rc == MBX_NOT_FINISHED) 4322 mempool_free(mbox, phba->mbox_mem_pool); 4323 } 4324 lpfc_no_rpi(phba, ndlp); 4325 4326 if (phba->sli_rev != LPFC_SLI_REV4) 4327 ndlp->nlp_rpi = 0; 4328 ndlp->nlp_flag &= ~NLP_RPI_REGISTERED; 4329 ndlp->nlp_flag &= ~NLP_NPR_ADISC; 4330 return 1; 4331 } 4332 return 0; 4333 } 4334 4335 /** 4336 * lpfc_unreg_hba_rpis - Unregister rpis registered to the hba. 4337 * @phba: pointer to lpfc hba data structure. 4338 * 4339 * This routine is invoked to unregister all the currently registered RPIs 4340 * to the HBA. 4341 **/ 4342 void 4343 lpfc_unreg_hba_rpis(struct lpfc_hba *phba) 4344 { 4345 struct lpfc_vport **vports; 4346 struct lpfc_nodelist *ndlp; 4347 struct Scsi_Host *shost; 4348 int i; 4349 4350 vports = lpfc_create_vport_work_array(phba); 4351 if (!vports) { 4352 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY, 4353 "2884 Vport array allocation failed \n"); 4354 return; 4355 } 4356 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) { 4357 shost = lpfc_shost_from_vport(vports[i]); 4358 spin_lock_irq(shost->host_lock); 4359 list_for_each_entry(ndlp, &vports[i]->fc_nodes, nlp_listp) { 4360 if (ndlp->nlp_flag & NLP_RPI_REGISTERED) { 4361 /* The mempool_alloc might sleep */ 4362 spin_unlock_irq(shost->host_lock); 4363 lpfc_unreg_rpi(vports[i], ndlp); 4364 spin_lock_irq(shost->host_lock); 4365 } 4366 } 4367 spin_unlock_irq(shost->host_lock); 4368 } 4369 lpfc_destroy_vport_work_array(phba, vports); 4370 } 4371 4372 void 4373 lpfc_unreg_all_rpis(struct lpfc_vport *vport) 4374 { 4375 struct lpfc_hba *phba = vport->phba; 4376 LPFC_MBOXQ_t *mbox; 4377 int rc; 4378 4379 if (phba->sli_rev == LPFC_SLI_REV4) { 4380 lpfc_sli4_unreg_all_rpis(vport); 4381 return; 4382 } 4383 4384 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 4385 if (mbox) { 4386 lpfc_unreg_login(phba, vport->vpi, LPFC_UNREG_ALL_RPIS_VPORT, 4387 mbox); 4388 mbox->vport = vport; 4389 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl; 4390 mbox->context1 = NULL; 4391 rc = lpfc_sli_issue_mbox_wait(phba, mbox, LPFC_MBOX_TMO); 4392 if (rc != MBX_TIMEOUT) 4393 mempool_free(mbox, phba->mbox_mem_pool); 4394 4395 if ((rc == MBX_TIMEOUT) || (rc == MBX_NOT_FINISHED)) 4396 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX | LOG_VPORT, 4397 "1836 Could not issue " 4398 "unreg_login(all_rpis) status %d\n", rc); 4399 } 4400 } 4401 4402 void 4403 lpfc_unreg_default_rpis(struct lpfc_vport *vport) 4404 { 4405 struct lpfc_hba *phba = vport->phba; 4406 LPFC_MBOXQ_t *mbox; 4407 int rc; 4408 4409 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 4410 if (mbox) { 4411 lpfc_unreg_did(phba, vport->vpi, LPFC_UNREG_ALL_DFLT_RPIS, 4412 mbox); 4413 mbox->vport = vport; 4414 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl; 4415 mbox->context1 = NULL; 4416 rc = lpfc_sli_issue_mbox_wait(phba, mbox, LPFC_MBOX_TMO); 4417 if (rc != MBX_TIMEOUT) 4418 mempool_free(mbox, phba->mbox_mem_pool); 4419 4420 if ((rc == MBX_TIMEOUT) || (rc == MBX_NOT_FINISHED)) 4421 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX | LOG_VPORT, 4422 "1815 Could not issue " 4423 "unreg_did (default rpis) status %d\n", 4424 rc); 4425 } 4426 } 4427 4428 /* 4429 * Free resources associated with LPFC_NODELIST entry 4430 * so it can be freed. 4431 */ 4432 static int 4433 lpfc_cleanup_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) 4434 { 4435 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 4436 struct lpfc_hba *phba = vport->phba; 4437 LPFC_MBOXQ_t *mb, *nextmb; 4438 struct lpfc_dmabuf *mp; 4439 4440 /* Cleanup node for NPort <nlp_DID> */ 4441 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE, 4442 "0900 Cleanup node for NPort x%x " 4443 "Data: x%x x%x x%x\n", 4444 ndlp->nlp_DID, ndlp->nlp_flag, 4445 ndlp->nlp_state, ndlp->nlp_rpi); 4446 if (NLP_CHK_FREE_REQ(ndlp)) { 4447 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NODE, 4448 "0280 lpfc_cleanup_node: ndlp:x%p " 4449 "usgmap:x%x refcnt:%d\n", 4450 (void *)ndlp, ndlp->nlp_usg_map, 4451 atomic_read(&ndlp->kref.refcount)); 4452 lpfc_dequeue_node(vport, ndlp); 4453 } else { 4454 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NODE, 4455 "0281 lpfc_cleanup_node: ndlp:x%p " 4456 "usgmap:x%x refcnt:%d\n", 4457 (void *)ndlp, ndlp->nlp_usg_map, 4458 atomic_read(&ndlp->kref.refcount)); 4459 lpfc_disable_node(vport, ndlp); 4460 } 4461 4462 /* cleanup any ndlp on mbox q waiting for reglogin cmpl */ 4463 if ((mb = phba->sli.mbox_active)) { 4464 if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) && 4465 (ndlp == (struct lpfc_nodelist *) mb->context2)) { 4466 mb->context2 = NULL; 4467 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl; 4468 } 4469 } 4470 4471 spin_lock_irq(&phba->hbalock); 4472 /* Cleanup REG_LOGIN completions which are not yet processed */ 4473 list_for_each_entry(mb, &phba->sli.mboxq_cmpl, list) { 4474 if ((mb->u.mb.mbxCommand != MBX_REG_LOGIN64) || 4475 (ndlp != (struct lpfc_nodelist *) mb->context2)) 4476 continue; 4477 4478 mb->context2 = NULL; 4479 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl; 4480 } 4481 4482 list_for_each_entry_safe(mb, nextmb, &phba->sli.mboxq, list) { 4483 if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) && 4484 (ndlp == (struct lpfc_nodelist *) mb->context2)) { 4485 mp = (struct lpfc_dmabuf *) (mb->context1); 4486 if (mp) { 4487 __lpfc_mbuf_free(phba, mp->virt, mp->phys); 4488 kfree(mp); 4489 } 4490 list_del(&mb->list); 4491 mempool_free(mb, phba->mbox_mem_pool); 4492 /* We shall not invoke the lpfc_nlp_put to decrement 4493 * the ndlp reference count as we are in the process 4494 * of lpfc_nlp_release. 4495 */ 4496 } 4497 } 4498 spin_unlock_irq(&phba->hbalock); 4499 4500 lpfc_els_abort(phba, ndlp); 4501 4502 spin_lock_irq(shost->host_lock); 4503 ndlp->nlp_flag &= ~NLP_DELAY_TMO; 4504 spin_unlock_irq(shost->host_lock); 4505 4506 ndlp->nlp_last_elscmd = 0; 4507 del_timer_sync(&ndlp->nlp_delayfunc); 4508 4509 list_del_init(&ndlp->els_retry_evt.evt_listp); 4510 list_del_init(&ndlp->dev_loss_evt.evt_listp); 4511 lpfc_cleanup_vports_rrqs(vport, ndlp); 4512 lpfc_unreg_rpi(vport, ndlp); 4513 4514 return 0; 4515 } 4516 4517 /* 4518 * Check to see if we can free the nlp back to the freelist. 4519 * If we are in the middle of using the nlp in the discovery state 4520 * machine, defer the free till we reach the end of the state machine. 4521 */ 4522 static void 4523 lpfc_nlp_remove(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) 4524 { 4525 struct lpfc_hba *phba = vport->phba; 4526 struct lpfc_rport_data *rdata; 4527 LPFC_MBOXQ_t *mbox; 4528 int rc; 4529 4530 lpfc_cancel_retry_delay_tmo(vport, ndlp); 4531 if ((ndlp->nlp_flag & NLP_DEFER_RM) && 4532 !(ndlp->nlp_flag & NLP_REG_LOGIN_SEND) && 4533 !(ndlp->nlp_flag & NLP_RPI_REGISTERED)) { 4534 /* For this case we need to cleanup the default rpi 4535 * allocated by the firmware. 4536 */ 4537 if ((mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL)) 4538 != NULL) { 4539 rc = lpfc_reg_rpi(phba, vport->vpi, ndlp->nlp_DID, 4540 (uint8_t *) &vport->fc_sparam, mbox, ndlp->nlp_rpi); 4541 if (rc) { 4542 mempool_free(mbox, phba->mbox_mem_pool); 4543 } 4544 else { 4545 mbox->mbox_flag |= LPFC_MBX_IMED_UNREG; 4546 mbox->mbox_cmpl = lpfc_mbx_cmpl_dflt_rpi; 4547 mbox->vport = vport; 4548 mbox->context2 = NULL; 4549 rc =lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT); 4550 if (rc == MBX_NOT_FINISHED) { 4551 mempool_free(mbox, phba->mbox_mem_pool); 4552 } 4553 } 4554 } 4555 } 4556 lpfc_cleanup_node(vport, ndlp); 4557 4558 /* 4559 * We can get here with a non-NULL ndlp->rport because when we 4560 * unregister a rport we don't break the rport/node linkage. So if we 4561 * do, make sure we don't leaving any dangling pointers behind. 4562 */ 4563 if (ndlp->rport) { 4564 rdata = ndlp->rport->dd_data; 4565 rdata->pnode = NULL; 4566 ndlp->rport = NULL; 4567 } 4568 } 4569 4570 static int 4571 lpfc_matchdid(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 4572 uint32_t did) 4573 { 4574 D_ID mydid, ndlpdid, matchdid; 4575 4576 if (did == Bcast_DID) 4577 return 0; 4578 4579 /* First check for Direct match */ 4580 if (ndlp->nlp_DID == did) 4581 return 1; 4582 4583 /* Next check for area/domain identically equals 0 match */ 4584 mydid.un.word = vport->fc_myDID; 4585 if ((mydid.un.b.domain == 0) && (mydid.un.b.area == 0)) { 4586 return 0; 4587 } 4588 4589 matchdid.un.word = did; 4590 ndlpdid.un.word = ndlp->nlp_DID; 4591 if (matchdid.un.b.id == ndlpdid.un.b.id) { 4592 if ((mydid.un.b.domain == matchdid.un.b.domain) && 4593 (mydid.un.b.area == matchdid.un.b.area)) { 4594 if ((ndlpdid.un.b.domain == 0) && 4595 (ndlpdid.un.b.area == 0)) { 4596 if (ndlpdid.un.b.id) 4597 return 1; 4598 } 4599 return 0; 4600 } 4601 4602 matchdid.un.word = ndlp->nlp_DID; 4603 if ((mydid.un.b.domain == ndlpdid.un.b.domain) && 4604 (mydid.un.b.area == ndlpdid.un.b.area)) { 4605 if ((matchdid.un.b.domain == 0) && 4606 (matchdid.un.b.area == 0)) { 4607 if (matchdid.un.b.id) 4608 return 1; 4609 } 4610 } 4611 } 4612 return 0; 4613 } 4614 4615 /* Search for a nodelist entry */ 4616 static struct lpfc_nodelist * 4617 __lpfc_findnode_did(struct lpfc_vport *vport, uint32_t did) 4618 { 4619 struct lpfc_nodelist *ndlp; 4620 uint32_t data1; 4621 4622 list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) { 4623 if (lpfc_matchdid(vport, ndlp, did)) { 4624 data1 = (((uint32_t) ndlp->nlp_state << 24) | 4625 ((uint32_t) ndlp->nlp_xri << 16) | 4626 ((uint32_t) ndlp->nlp_type << 8) | 4627 ((uint32_t) ndlp->nlp_rpi & 0xff)); 4628 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE, 4629 "0929 FIND node DID " 4630 "Data: x%p x%x x%x x%x\n", 4631 ndlp, ndlp->nlp_DID, 4632 ndlp->nlp_flag, data1); 4633 return ndlp; 4634 } 4635 } 4636 4637 /* FIND node did <did> NOT FOUND */ 4638 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE, 4639 "0932 FIND node did x%x NOT FOUND.\n", did); 4640 return NULL; 4641 } 4642 4643 struct lpfc_nodelist * 4644 lpfc_findnode_did(struct lpfc_vport *vport, uint32_t did) 4645 { 4646 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 4647 struct lpfc_nodelist *ndlp; 4648 unsigned long iflags; 4649 4650 spin_lock_irqsave(shost->host_lock, iflags); 4651 ndlp = __lpfc_findnode_did(vport, did); 4652 spin_unlock_irqrestore(shost->host_lock, iflags); 4653 return ndlp; 4654 } 4655 4656 struct lpfc_nodelist * 4657 lpfc_setup_disc_node(struct lpfc_vport *vport, uint32_t did) 4658 { 4659 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 4660 struct lpfc_nodelist *ndlp; 4661 4662 ndlp = lpfc_findnode_did(vport, did); 4663 if (!ndlp) { 4664 if ((vport->fc_flag & FC_RSCN_MODE) != 0 && 4665 lpfc_rscn_payload_check(vport, did) == 0) 4666 return NULL; 4667 ndlp = (struct lpfc_nodelist *) 4668 mempool_alloc(vport->phba->nlp_mem_pool, GFP_KERNEL); 4669 if (!ndlp) 4670 return NULL; 4671 lpfc_nlp_init(vport, ndlp, did); 4672 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE); 4673 spin_lock_irq(shost->host_lock); 4674 ndlp->nlp_flag |= NLP_NPR_2B_DISC; 4675 spin_unlock_irq(shost->host_lock); 4676 return ndlp; 4677 } else if (!NLP_CHK_NODE_ACT(ndlp)) { 4678 ndlp = lpfc_enable_node(vport, ndlp, NLP_STE_NPR_NODE); 4679 if (!ndlp) 4680 return NULL; 4681 spin_lock_irq(shost->host_lock); 4682 ndlp->nlp_flag |= NLP_NPR_2B_DISC; 4683 spin_unlock_irq(shost->host_lock); 4684 return ndlp; 4685 } 4686 4687 if ((vport->fc_flag & FC_RSCN_MODE) && 4688 !(vport->fc_flag & FC_NDISC_ACTIVE)) { 4689 if (lpfc_rscn_payload_check(vport, did)) { 4690 /* If we've already received a PLOGI from this NPort 4691 * we don't need to try to discover it again. 4692 */ 4693 if (ndlp->nlp_flag & NLP_RCV_PLOGI) 4694 return NULL; 4695 4696 /* Since this node is marked for discovery, 4697 * delay timeout is not needed. 4698 */ 4699 lpfc_cancel_retry_delay_tmo(vport, ndlp); 4700 spin_lock_irq(shost->host_lock); 4701 ndlp->nlp_flag |= NLP_NPR_2B_DISC; 4702 spin_unlock_irq(shost->host_lock); 4703 } else 4704 ndlp = NULL; 4705 } else { 4706 /* If we've already received a PLOGI from this NPort, 4707 * or we are already in the process of discovery on it, 4708 * we don't need to try to discover it again. 4709 */ 4710 if (ndlp->nlp_state == NLP_STE_ADISC_ISSUE || 4711 ndlp->nlp_state == NLP_STE_PLOGI_ISSUE || 4712 ndlp->nlp_flag & NLP_RCV_PLOGI) 4713 return NULL; 4714 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE); 4715 spin_lock_irq(shost->host_lock); 4716 ndlp->nlp_flag |= NLP_NPR_2B_DISC; 4717 spin_unlock_irq(shost->host_lock); 4718 } 4719 return ndlp; 4720 } 4721 4722 /* Build a list of nodes to discover based on the loopmap */ 4723 void 4724 lpfc_disc_list_loopmap(struct lpfc_vport *vport) 4725 { 4726 struct lpfc_hba *phba = vport->phba; 4727 int j; 4728 uint32_t alpa, index; 4729 4730 if (!lpfc_is_link_up(phba)) 4731 return; 4732 4733 if (phba->fc_topology != LPFC_TOPOLOGY_LOOP) 4734 return; 4735 4736 /* Check for loop map present or not */ 4737 if (phba->alpa_map[0]) { 4738 for (j = 1; j <= phba->alpa_map[0]; j++) { 4739 alpa = phba->alpa_map[j]; 4740 if (((vport->fc_myDID & 0xff) == alpa) || (alpa == 0)) 4741 continue; 4742 lpfc_setup_disc_node(vport, alpa); 4743 } 4744 } else { 4745 /* No alpamap, so try all alpa's */ 4746 for (j = 0; j < FC_MAXLOOP; j++) { 4747 /* If cfg_scan_down is set, start from highest 4748 * ALPA (0xef) to lowest (0x1). 4749 */ 4750 if (vport->cfg_scan_down) 4751 index = j; 4752 else 4753 index = FC_MAXLOOP - j - 1; 4754 alpa = lpfcAlpaArray[index]; 4755 if ((vport->fc_myDID & 0xff) == alpa) 4756 continue; 4757 lpfc_setup_disc_node(vport, alpa); 4758 } 4759 } 4760 return; 4761 } 4762 4763 void 4764 lpfc_issue_clear_la(struct lpfc_hba *phba, struct lpfc_vport *vport) 4765 { 4766 LPFC_MBOXQ_t *mbox; 4767 struct lpfc_sli *psli = &phba->sli; 4768 struct lpfc_sli_ring *extra_ring = &psli->ring[psli->extra_ring]; 4769 struct lpfc_sli_ring *fcp_ring = &psli->ring[psli->fcp_ring]; 4770 struct lpfc_sli_ring *next_ring = &psli->ring[psli->next_ring]; 4771 int rc; 4772 4773 /* 4774 * if it's not a physical port or if we already send 4775 * clear_la then don't send it. 4776 */ 4777 if ((phba->link_state >= LPFC_CLEAR_LA) || 4778 (vport->port_type != LPFC_PHYSICAL_PORT) || 4779 (phba->sli_rev == LPFC_SLI_REV4)) 4780 return; 4781 4782 /* Link up discovery */ 4783 if ((mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL)) != NULL) { 4784 phba->link_state = LPFC_CLEAR_LA; 4785 lpfc_clear_la(phba, mbox); 4786 mbox->mbox_cmpl = lpfc_mbx_cmpl_clear_la; 4787 mbox->vport = vport; 4788 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT); 4789 if (rc == MBX_NOT_FINISHED) { 4790 mempool_free(mbox, phba->mbox_mem_pool); 4791 lpfc_disc_flush_list(vport); 4792 extra_ring->flag &= ~LPFC_STOP_IOCB_EVENT; 4793 fcp_ring->flag &= ~LPFC_STOP_IOCB_EVENT; 4794 next_ring->flag &= ~LPFC_STOP_IOCB_EVENT; 4795 phba->link_state = LPFC_HBA_ERROR; 4796 } 4797 } 4798 } 4799 4800 /* Reg_vpi to tell firmware to resume normal operations */ 4801 void 4802 lpfc_issue_reg_vpi(struct lpfc_hba *phba, struct lpfc_vport *vport) 4803 { 4804 LPFC_MBOXQ_t *regvpimbox; 4805 4806 regvpimbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 4807 if (regvpimbox) { 4808 lpfc_reg_vpi(vport, regvpimbox); 4809 regvpimbox->mbox_cmpl = lpfc_mbx_cmpl_reg_vpi; 4810 regvpimbox->vport = vport; 4811 if (lpfc_sli_issue_mbox(phba, regvpimbox, MBX_NOWAIT) 4812 == MBX_NOT_FINISHED) { 4813 mempool_free(regvpimbox, phba->mbox_mem_pool); 4814 } 4815 } 4816 } 4817 4818 /* Start Link up / RSCN discovery on NPR nodes */ 4819 void 4820 lpfc_disc_start(struct lpfc_vport *vport) 4821 { 4822 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 4823 struct lpfc_hba *phba = vport->phba; 4824 uint32_t num_sent; 4825 uint32_t clear_la_pending; 4826 int did_changed; 4827 4828 if (!lpfc_is_link_up(phba)) 4829 return; 4830 4831 if (phba->link_state == LPFC_CLEAR_LA) 4832 clear_la_pending = 1; 4833 else 4834 clear_la_pending = 0; 4835 4836 if (vport->port_state < LPFC_VPORT_READY) 4837 vport->port_state = LPFC_DISC_AUTH; 4838 4839 lpfc_set_disctmo(vport); 4840 4841 if (vport->fc_prevDID == vport->fc_myDID) 4842 did_changed = 0; 4843 else 4844 did_changed = 1; 4845 4846 vport->fc_prevDID = vport->fc_myDID; 4847 vport->num_disc_nodes = 0; 4848 4849 /* Start Discovery state <hba_state> */ 4850 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, 4851 "0202 Start Discovery hba state x%x " 4852 "Data: x%x x%x x%x\n", 4853 vport->port_state, vport->fc_flag, vport->fc_plogi_cnt, 4854 vport->fc_adisc_cnt); 4855 4856 /* First do ADISCs - if any */ 4857 num_sent = lpfc_els_disc_adisc(vport); 4858 4859 if (num_sent) 4860 return; 4861 4862 /* Register the VPI for SLI3, NON-NPIV only. */ 4863 if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) && 4864 !(vport->fc_flag & FC_PT2PT) && 4865 !(vport->fc_flag & FC_RSCN_MODE) && 4866 (phba->sli_rev < LPFC_SLI_REV4)) { 4867 lpfc_issue_reg_vpi(phba, vport); 4868 return; 4869 } 4870 4871 /* 4872 * For SLI2, we need to set port_state to READY and continue 4873 * discovery. 4874 */ 4875 if (vport->port_state < LPFC_VPORT_READY && !clear_la_pending) { 4876 /* If we get here, there is nothing to ADISC */ 4877 if (vport->port_type == LPFC_PHYSICAL_PORT) 4878 lpfc_issue_clear_la(phba, vport); 4879 4880 if (!(vport->fc_flag & FC_ABORT_DISCOVERY)) { 4881 vport->num_disc_nodes = 0; 4882 /* go thru NPR nodes and issue ELS PLOGIs */ 4883 if (vport->fc_npr_cnt) 4884 lpfc_els_disc_plogi(vport); 4885 4886 if (!vport->num_disc_nodes) { 4887 spin_lock_irq(shost->host_lock); 4888 vport->fc_flag &= ~FC_NDISC_ACTIVE; 4889 spin_unlock_irq(shost->host_lock); 4890 lpfc_can_disctmo(vport); 4891 } 4892 } 4893 vport->port_state = LPFC_VPORT_READY; 4894 } else { 4895 /* Next do PLOGIs - if any */ 4896 num_sent = lpfc_els_disc_plogi(vport); 4897 4898 if (num_sent) 4899 return; 4900 4901 if (vport->fc_flag & FC_RSCN_MODE) { 4902 /* Check to see if more RSCNs came in while we 4903 * were processing this one. 4904 */ 4905 if ((vport->fc_rscn_id_cnt == 0) && 4906 (!(vport->fc_flag & FC_RSCN_DISCOVERY))) { 4907 spin_lock_irq(shost->host_lock); 4908 vport->fc_flag &= ~FC_RSCN_MODE; 4909 spin_unlock_irq(shost->host_lock); 4910 lpfc_can_disctmo(vport); 4911 } else 4912 lpfc_els_handle_rscn(vport); 4913 } 4914 } 4915 return; 4916 } 4917 4918 /* 4919 * Ignore completion for all IOCBs on tx and txcmpl queue for ELS 4920 * ring the match the sppecified nodelist. 4921 */ 4922 static void 4923 lpfc_free_tx(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp) 4924 { 4925 LIST_HEAD(completions); 4926 struct lpfc_sli *psli; 4927 IOCB_t *icmd; 4928 struct lpfc_iocbq *iocb, *next_iocb; 4929 struct lpfc_sli_ring *pring; 4930 4931 psli = &phba->sli; 4932 pring = &psli->ring[LPFC_ELS_RING]; 4933 4934 /* Error matching iocb on txq or txcmplq 4935 * First check the txq. 4936 */ 4937 spin_lock_irq(&phba->hbalock); 4938 list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) { 4939 if (iocb->context1 != ndlp) { 4940 continue; 4941 } 4942 icmd = &iocb->iocb; 4943 if ((icmd->ulpCommand == CMD_ELS_REQUEST64_CR) || 4944 (icmd->ulpCommand == CMD_XMIT_ELS_RSP64_CX)) { 4945 4946 list_move_tail(&iocb->list, &completions); 4947 pring->txq_cnt--; 4948 } 4949 } 4950 4951 /* Next check the txcmplq */ 4952 list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq, list) { 4953 if (iocb->context1 != ndlp) { 4954 continue; 4955 } 4956 icmd = &iocb->iocb; 4957 if (icmd->ulpCommand == CMD_ELS_REQUEST64_CR || 4958 icmd->ulpCommand == CMD_XMIT_ELS_RSP64_CX) { 4959 lpfc_sli_issue_abort_iotag(phba, pring, iocb); 4960 } 4961 } 4962 spin_unlock_irq(&phba->hbalock); 4963 4964 /* Cancel all the IOCBs from the completions list */ 4965 lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT, 4966 IOERR_SLI_ABORTED); 4967 } 4968 4969 static void 4970 lpfc_disc_flush_list(struct lpfc_vport *vport) 4971 { 4972 struct lpfc_nodelist *ndlp, *next_ndlp; 4973 struct lpfc_hba *phba = vport->phba; 4974 4975 if (vport->fc_plogi_cnt || vport->fc_adisc_cnt) { 4976 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, 4977 nlp_listp) { 4978 if (!NLP_CHK_NODE_ACT(ndlp)) 4979 continue; 4980 if (ndlp->nlp_state == NLP_STE_PLOGI_ISSUE || 4981 ndlp->nlp_state == NLP_STE_ADISC_ISSUE) { 4982 lpfc_free_tx(phba, ndlp); 4983 } 4984 } 4985 } 4986 } 4987 4988 void 4989 lpfc_cleanup_discovery_resources(struct lpfc_vport *vport) 4990 { 4991 lpfc_els_flush_rscn(vport); 4992 lpfc_els_flush_cmd(vport); 4993 lpfc_disc_flush_list(vport); 4994 } 4995 4996 /*****************************************************************************/ 4997 /* 4998 * NAME: lpfc_disc_timeout 4999 * 5000 * FUNCTION: Fibre Channel driver discovery timeout routine. 5001 * 5002 * EXECUTION ENVIRONMENT: interrupt only 5003 * 5004 * CALLED FROM: 5005 * Timer function 5006 * 5007 * RETURNS: 5008 * none 5009 */ 5010 /*****************************************************************************/ 5011 void 5012 lpfc_disc_timeout(unsigned long ptr) 5013 { 5014 struct lpfc_vport *vport = (struct lpfc_vport *) ptr; 5015 struct lpfc_hba *phba = vport->phba; 5016 uint32_t tmo_posted; 5017 unsigned long flags = 0; 5018 5019 if (unlikely(!phba)) 5020 return; 5021 5022 spin_lock_irqsave(&vport->work_port_lock, flags); 5023 tmo_posted = vport->work_port_events & WORKER_DISC_TMO; 5024 if (!tmo_posted) 5025 vport->work_port_events |= WORKER_DISC_TMO; 5026 spin_unlock_irqrestore(&vport->work_port_lock, flags); 5027 5028 if (!tmo_posted) 5029 lpfc_worker_wake_up(phba); 5030 return; 5031 } 5032 5033 static void 5034 lpfc_disc_timeout_handler(struct lpfc_vport *vport) 5035 { 5036 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 5037 struct lpfc_hba *phba = vport->phba; 5038 struct lpfc_sli *psli = &phba->sli; 5039 struct lpfc_nodelist *ndlp, *next_ndlp; 5040 LPFC_MBOXQ_t *initlinkmbox; 5041 int rc, clrlaerr = 0; 5042 5043 if (!(vport->fc_flag & FC_DISC_TMO)) 5044 return; 5045 5046 spin_lock_irq(shost->host_lock); 5047 vport->fc_flag &= ~FC_DISC_TMO; 5048 spin_unlock_irq(shost->host_lock); 5049 5050 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, 5051 "disc timeout: state:x%x rtry:x%x flg:x%x", 5052 vport->port_state, vport->fc_ns_retry, vport->fc_flag); 5053 5054 switch (vport->port_state) { 5055 5056 case LPFC_LOCAL_CFG_LINK: 5057 /* port_state is identically LPFC_LOCAL_CFG_LINK while waiting for 5058 * FAN 5059 */ 5060 /* FAN timeout */ 5061 lpfc_printf_vlog(vport, KERN_WARNING, LOG_DISCOVERY, 5062 "0221 FAN timeout\n"); 5063 /* Start discovery by sending FLOGI, clean up old rpis */ 5064 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, 5065 nlp_listp) { 5066 if (!NLP_CHK_NODE_ACT(ndlp)) 5067 continue; 5068 if (ndlp->nlp_state != NLP_STE_NPR_NODE) 5069 continue; 5070 if (ndlp->nlp_type & NLP_FABRIC) { 5071 /* Clean up the ndlp on Fabric connections */ 5072 lpfc_drop_node(vport, ndlp); 5073 5074 } else if (!(ndlp->nlp_flag & NLP_NPR_ADISC)) { 5075 /* Fail outstanding IO now since device 5076 * is marked for PLOGI. 5077 */ 5078 lpfc_unreg_rpi(vport, ndlp); 5079 } 5080 } 5081 if (vport->port_state != LPFC_FLOGI) { 5082 if (phba->sli_rev <= LPFC_SLI_REV3) 5083 lpfc_initial_flogi(vport); 5084 else 5085 lpfc_issue_init_vfi(vport); 5086 return; 5087 } 5088 break; 5089 5090 case LPFC_FDISC: 5091 case LPFC_FLOGI: 5092 /* port_state is identically LPFC_FLOGI while waiting for FLOGI cmpl */ 5093 /* Initial FLOGI timeout */ 5094 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY, 5095 "0222 Initial %s timeout\n", 5096 vport->vpi ? "FDISC" : "FLOGI"); 5097 5098 /* Assume no Fabric and go on with discovery. 5099 * Check for outstanding ELS FLOGI to abort. 5100 */ 5101 5102 /* FLOGI failed, so just use loop map to make discovery list */ 5103 lpfc_disc_list_loopmap(vport); 5104 5105 /* Start discovery */ 5106 lpfc_disc_start(vport); 5107 break; 5108 5109 case LPFC_FABRIC_CFG_LINK: 5110 /* hba_state is identically LPFC_FABRIC_CFG_LINK while waiting for 5111 NameServer login */ 5112 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY, 5113 "0223 Timeout while waiting for " 5114 "NameServer login\n"); 5115 /* Next look for NameServer ndlp */ 5116 ndlp = lpfc_findnode_did(vport, NameServer_DID); 5117 if (ndlp && NLP_CHK_NODE_ACT(ndlp)) 5118 lpfc_els_abort(phba, ndlp); 5119 5120 /* ReStart discovery */ 5121 goto restart_disc; 5122 5123 case LPFC_NS_QRY: 5124 /* Check for wait for NameServer Rsp timeout */ 5125 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY, 5126 "0224 NameServer Query timeout " 5127 "Data: x%x x%x\n", 5128 vport->fc_ns_retry, LPFC_MAX_NS_RETRY); 5129 5130 if (vport->fc_ns_retry < LPFC_MAX_NS_RETRY) { 5131 /* Try it one more time */ 5132 vport->fc_ns_retry++; 5133 rc = lpfc_ns_cmd(vport, SLI_CTNS_GID_FT, 5134 vport->fc_ns_retry, 0); 5135 if (rc == 0) 5136 break; 5137 } 5138 vport->fc_ns_retry = 0; 5139 5140 restart_disc: 5141 /* 5142 * Discovery is over. 5143 * set port_state to PORT_READY if SLI2. 5144 * cmpl_reg_vpi will set port_state to READY for SLI3. 5145 */ 5146 if (phba->sli_rev < LPFC_SLI_REV4) { 5147 if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) 5148 lpfc_issue_reg_vpi(phba, vport); 5149 else { 5150 lpfc_issue_clear_la(phba, vport); 5151 vport->port_state = LPFC_VPORT_READY; 5152 } 5153 } 5154 5155 /* Setup and issue mailbox INITIALIZE LINK command */ 5156 initlinkmbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 5157 if (!initlinkmbox) { 5158 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY, 5159 "0206 Device Discovery " 5160 "completion error\n"); 5161 phba->link_state = LPFC_HBA_ERROR; 5162 break; 5163 } 5164 5165 lpfc_linkdown(phba); 5166 lpfc_init_link(phba, initlinkmbox, phba->cfg_topology, 5167 phba->cfg_link_speed); 5168 initlinkmbox->u.mb.un.varInitLnk.lipsr_AL_PA = 0; 5169 initlinkmbox->vport = vport; 5170 initlinkmbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl; 5171 rc = lpfc_sli_issue_mbox(phba, initlinkmbox, MBX_NOWAIT); 5172 lpfc_set_loopback_flag(phba); 5173 if (rc == MBX_NOT_FINISHED) 5174 mempool_free(initlinkmbox, phba->mbox_mem_pool); 5175 5176 break; 5177 5178 case LPFC_DISC_AUTH: 5179 /* Node Authentication timeout */ 5180 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY, 5181 "0227 Node Authentication timeout\n"); 5182 lpfc_disc_flush_list(vport); 5183 5184 /* 5185 * set port_state to PORT_READY if SLI2. 5186 * cmpl_reg_vpi will set port_state to READY for SLI3. 5187 */ 5188 if (phba->sli_rev < LPFC_SLI_REV4) { 5189 if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) 5190 lpfc_issue_reg_vpi(phba, vport); 5191 else { /* NPIV Not enabled */ 5192 lpfc_issue_clear_la(phba, vport); 5193 vport->port_state = LPFC_VPORT_READY; 5194 } 5195 } 5196 break; 5197 5198 case LPFC_VPORT_READY: 5199 if (vport->fc_flag & FC_RSCN_MODE) { 5200 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY, 5201 "0231 RSCN timeout Data: x%x " 5202 "x%x\n", 5203 vport->fc_ns_retry, LPFC_MAX_NS_RETRY); 5204 5205 /* Cleanup any outstanding ELS commands */ 5206 lpfc_els_flush_cmd(vport); 5207 5208 lpfc_els_flush_rscn(vport); 5209 lpfc_disc_flush_list(vport); 5210 } 5211 break; 5212 5213 default: 5214 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY, 5215 "0273 Unexpected discovery timeout, " 5216 "vport State x%x\n", vport->port_state); 5217 break; 5218 } 5219 5220 switch (phba->link_state) { 5221 case LPFC_CLEAR_LA: 5222 /* CLEAR LA timeout */ 5223 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY, 5224 "0228 CLEAR LA timeout\n"); 5225 clrlaerr = 1; 5226 break; 5227 5228 case LPFC_LINK_UP: 5229 lpfc_issue_clear_la(phba, vport); 5230 /* Drop thru */ 5231 case LPFC_LINK_UNKNOWN: 5232 case LPFC_WARM_START: 5233 case LPFC_INIT_START: 5234 case LPFC_INIT_MBX_CMDS: 5235 case LPFC_LINK_DOWN: 5236 case LPFC_HBA_ERROR: 5237 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY, 5238 "0230 Unexpected timeout, hba link " 5239 "state x%x\n", phba->link_state); 5240 clrlaerr = 1; 5241 break; 5242 5243 case LPFC_HBA_READY: 5244 break; 5245 } 5246 5247 if (clrlaerr) { 5248 lpfc_disc_flush_list(vport); 5249 psli->ring[(psli->extra_ring)].flag &= ~LPFC_STOP_IOCB_EVENT; 5250 psli->ring[(psli->fcp_ring)].flag &= ~LPFC_STOP_IOCB_EVENT; 5251 psli->ring[(psli->next_ring)].flag &= ~LPFC_STOP_IOCB_EVENT; 5252 vport->port_state = LPFC_VPORT_READY; 5253 } 5254 5255 return; 5256 } 5257 5258 /* 5259 * This routine handles processing a NameServer REG_LOGIN mailbox 5260 * command upon completion. It is setup in the LPFC_MBOXQ 5261 * as the completion routine when the command is 5262 * handed off to the SLI layer. 5263 */ 5264 void 5265 lpfc_mbx_cmpl_fdmi_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 5266 { 5267 MAILBOX_t *mb = &pmb->u.mb; 5268 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1); 5269 struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) pmb->context2; 5270 struct lpfc_vport *vport = pmb->vport; 5271 5272 pmb->context1 = NULL; 5273 pmb->context2 = NULL; 5274 5275 if (phba->sli_rev < LPFC_SLI_REV4) 5276 ndlp->nlp_rpi = mb->un.varWords[0]; 5277 ndlp->nlp_flag |= NLP_RPI_REGISTERED; 5278 ndlp->nlp_type |= NLP_FABRIC; 5279 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE); 5280 5281 /* 5282 * Start issuing Fabric-Device Management Interface (FDMI) command to 5283 * 0xfffffa (FDMI well known port) or Delay issuing FDMI command if 5284 * fdmi-on=2 (supporting RPA/hostnmae) 5285 */ 5286 5287 if (vport->cfg_fdmi_on == 1) 5288 lpfc_fdmi_cmd(vport, ndlp, SLI_MGMT_DHBA); 5289 else 5290 mod_timer(&vport->fc_fdmitmo, jiffies + HZ * 60); 5291 5292 /* decrement the node reference count held for this callback 5293 * function. 5294 */ 5295 lpfc_nlp_put(ndlp); 5296 lpfc_mbuf_free(phba, mp->virt, mp->phys); 5297 kfree(mp); 5298 mempool_free(pmb, phba->mbox_mem_pool); 5299 5300 return; 5301 } 5302 5303 static int 5304 lpfc_filter_by_rpi(struct lpfc_nodelist *ndlp, void *param) 5305 { 5306 uint16_t *rpi = param; 5307 5308 return ndlp->nlp_rpi == *rpi; 5309 } 5310 5311 static int 5312 lpfc_filter_by_wwpn(struct lpfc_nodelist *ndlp, void *param) 5313 { 5314 return memcmp(&ndlp->nlp_portname, param, 5315 sizeof(ndlp->nlp_portname)) == 0; 5316 } 5317 5318 static struct lpfc_nodelist * 5319 __lpfc_find_node(struct lpfc_vport *vport, node_filter filter, void *param) 5320 { 5321 struct lpfc_nodelist *ndlp; 5322 5323 list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) { 5324 if (filter(ndlp, param)) 5325 return ndlp; 5326 } 5327 return NULL; 5328 } 5329 5330 /* 5331 * This routine looks up the ndlp lists for the given RPI. If rpi found it 5332 * returns the node list element pointer else return NULL. 5333 */ 5334 struct lpfc_nodelist * 5335 __lpfc_findnode_rpi(struct lpfc_vport *vport, uint16_t rpi) 5336 { 5337 return __lpfc_find_node(vport, lpfc_filter_by_rpi, &rpi); 5338 } 5339 5340 /* 5341 * This routine looks up the ndlp lists for the given WWPN. If WWPN found it 5342 * returns the node element list pointer else return NULL. 5343 */ 5344 struct lpfc_nodelist * 5345 lpfc_findnode_wwpn(struct lpfc_vport *vport, struct lpfc_name *wwpn) 5346 { 5347 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 5348 struct lpfc_nodelist *ndlp; 5349 5350 spin_lock_irq(shost->host_lock); 5351 ndlp = __lpfc_find_node(vport, lpfc_filter_by_wwpn, wwpn); 5352 spin_unlock_irq(shost->host_lock); 5353 return ndlp; 5354 } 5355 5356 void 5357 lpfc_nlp_init(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 5358 uint32_t did) 5359 { 5360 memset(ndlp, 0, sizeof (struct lpfc_nodelist)); 5361 5362 lpfc_initialize_node(vport, ndlp, did); 5363 INIT_LIST_HEAD(&ndlp->nlp_listp); 5364 5365 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE, 5366 "node init: did:x%x", 5367 ndlp->nlp_DID, 0, 0); 5368 5369 return; 5370 } 5371 5372 /* This routine releases all resources associated with a specifc NPort's ndlp 5373 * and mempool_free's the nodelist. 5374 */ 5375 static void 5376 lpfc_nlp_release(struct kref *kref) 5377 { 5378 struct lpfc_hba *phba; 5379 unsigned long flags; 5380 struct lpfc_nodelist *ndlp = container_of(kref, struct lpfc_nodelist, 5381 kref); 5382 5383 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE, 5384 "node release: did:x%x flg:x%x type:x%x", 5385 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type); 5386 5387 lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_NODE, 5388 "0279 lpfc_nlp_release: ndlp:x%p " 5389 "usgmap:x%x refcnt:%d\n", 5390 (void *)ndlp, ndlp->nlp_usg_map, 5391 atomic_read(&ndlp->kref.refcount)); 5392 5393 /* remove ndlp from action. */ 5394 lpfc_nlp_remove(ndlp->vport, ndlp); 5395 5396 /* clear the ndlp active flag for all release cases */ 5397 phba = ndlp->phba; 5398 spin_lock_irqsave(&phba->ndlp_lock, flags); 5399 NLP_CLR_NODE_ACT(ndlp); 5400 spin_unlock_irqrestore(&phba->ndlp_lock, flags); 5401 if (phba->sli_rev == LPFC_SLI_REV4) 5402 lpfc_sli4_free_rpi(phba, ndlp->nlp_rpi); 5403 5404 /* free ndlp memory for final ndlp release */ 5405 if (NLP_CHK_FREE_REQ(ndlp)) { 5406 kfree(ndlp->lat_data); 5407 mempool_free(ndlp, ndlp->phba->nlp_mem_pool); 5408 } 5409 } 5410 5411 /* This routine bumps the reference count for a ndlp structure to ensure 5412 * that one discovery thread won't free a ndlp while another discovery thread 5413 * is using it. 5414 */ 5415 struct lpfc_nodelist * 5416 lpfc_nlp_get(struct lpfc_nodelist *ndlp) 5417 { 5418 struct lpfc_hba *phba; 5419 unsigned long flags; 5420 5421 if (ndlp) { 5422 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE, 5423 "node get: did:x%x flg:x%x refcnt:x%x", 5424 ndlp->nlp_DID, ndlp->nlp_flag, 5425 atomic_read(&ndlp->kref.refcount)); 5426 /* The check of ndlp usage to prevent incrementing the 5427 * ndlp reference count that is in the process of being 5428 * released. 5429 */ 5430 phba = ndlp->phba; 5431 spin_lock_irqsave(&phba->ndlp_lock, flags); 5432 if (!NLP_CHK_NODE_ACT(ndlp) || NLP_CHK_FREE_ACK(ndlp)) { 5433 spin_unlock_irqrestore(&phba->ndlp_lock, flags); 5434 lpfc_printf_vlog(ndlp->vport, KERN_WARNING, LOG_NODE, 5435 "0276 lpfc_nlp_get: ndlp:x%p " 5436 "usgmap:x%x refcnt:%d\n", 5437 (void *)ndlp, ndlp->nlp_usg_map, 5438 atomic_read(&ndlp->kref.refcount)); 5439 return NULL; 5440 } else 5441 kref_get(&ndlp->kref); 5442 spin_unlock_irqrestore(&phba->ndlp_lock, flags); 5443 } 5444 return ndlp; 5445 } 5446 5447 /* This routine decrements the reference count for a ndlp structure. If the 5448 * count goes to 0, this indicates the the associated nodelist should be 5449 * freed. Returning 1 indicates the ndlp resource has been released; on the 5450 * other hand, returning 0 indicates the ndlp resource has not been released 5451 * yet. 5452 */ 5453 int 5454 lpfc_nlp_put(struct lpfc_nodelist *ndlp) 5455 { 5456 struct lpfc_hba *phba; 5457 unsigned long flags; 5458 5459 if (!ndlp) 5460 return 1; 5461 5462 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE, 5463 "node put: did:x%x flg:x%x refcnt:x%x", 5464 ndlp->nlp_DID, ndlp->nlp_flag, 5465 atomic_read(&ndlp->kref.refcount)); 5466 phba = ndlp->phba; 5467 spin_lock_irqsave(&phba->ndlp_lock, flags); 5468 /* Check the ndlp memory free acknowledge flag to avoid the 5469 * possible race condition that kref_put got invoked again 5470 * after previous one has done ndlp memory free. 5471 */ 5472 if (NLP_CHK_FREE_ACK(ndlp)) { 5473 spin_unlock_irqrestore(&phba->ndlp_lock, flags); 5474 lpfc_printf_vlog(ndlp->vport, KERN_WARNING, LOG_NODE, 5475 "0274 lpfc_nlp_put: ndlp:x%p " 5476 "usgmap:x%x refcnt:%d\n", 5477 (void *)ndlp, ndlp->nlp_usg_map, 5478 atomic_read(&ndlp->kref.refcount)); 5479 return 1; 5480 } 5481 /* Check the ndlp inactivate log flag to avoid the possible 5482 * race condition that kref_put got invoked again after ndlp 5483 * is already in inactivating state. 5484 */ 5485 if (NLP_CHK_IACT_REQ(ndlp)) { 5486 spin_unlock_irqrestore(&phba->ndlp_lock, flags); 5487 lpfc_printf_vlog(ndlp->vport, KERN_WARNING, LOG_NODE, 5488 "0275 lpfc_nlp_put: ndlp:x%p " 5489 "usgmap:x%x refcnt:%d\n", 5490 (void *)ndlp, ndlp->nlp_usg_map, 5491 atomic_read(&ndlp->kref.refcount)); 5492 return 1; 5493 } 5494 /* For last put, mark the ndlp usage flags to make sure no 5495 * other kref_get and kref_put on the same ndlp shall get 5496 * in between the process when the final kref_put has been 5497 * invoked on this ndlp. 5498 */ 5499 if (atomic_read(&ndlp->kref.refcount) == 1) { 5500 /* Indicate ndlp is put to inactive state. */ 5501 NLP_SET_IACT_REQ(ndlp); 5502 /* Acknowledge ndlp memory free has been seen. */ 5503 if (NLP_CHK_FREE_REQ(ndlp)) 5504 NLP_SET_FREE_ACK(ndlp); 5505 } 5506 spin_unlock_irqrestore(&phba->ndlp_lock, flags); 5507 /* Note, the kref_put returns 1 when decrementing a reference 5508 * count that was 1, it invokes the release callback function, 5509 * but it still left the reference count as 1 (not actually 5510 * performs the last decrementation). Otherwise, it actually 5511 * decrements the reference count and returns 0. 5512 */ 5513 return kref_put(&ndlp->kref, lpfc_nlp_release); 5514 } 5515 5516 /* This routine free's the specified nodelist if it is not in use 5517 * by any other discovery thread. This routine returns 1 if the 5518 * ndlp has been freed. A return value of 0 indicates the ndlp is 5519 * not yet been released. 5520 */ 5521 int 5522 lpfc_nlp_not_used(struct lpfc_nodelist *ndlp) 5523 { 5524 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE, 5525 "node not used: did:x%x flg:x%x refcnt:x%x", 5526 ndlp->nlp_DID, ndlp->nlp_flag, 5527 atomic_read(&ndlp->kref.refcount)); 5528 if (atomic_read(&ndlp->kref.refcount) == 1) 5529 if (lpfc_nlp_put(ndlp)) 5530 return 1; 5531 return 0; 5532 } 5533 5534 /** 5535 * lpfc_fcf_inuse - Check if FCF can be unregistered. 5536 * @phba: Pointer to hba context object. 5537 * 5538 * This function iterate through all FC nodes associated 5539 * will all vports to check if there is any node with 5540 * fc_rports associated with it. If there is an fc_rport 5541 * associated with the node, then the node is either in 5542 * discovered state or its devloss_timer is pending. 5543 */ 5544 static int 5545 lpfc_fcf_inuse(struct lpfc_hba *phba) 5546 { 5547 struct lpfc_vport **vports; 5548 int i, ret = 0; 5549 struct lpfc_nodelist *ndlp; 5550 struct Scsi_Host *shost; 5551 5552 vports = lpfc_create_vport_work_array(phba); 5553 5554 /* If driver cannot allocate memory, indicate fcf is in use */ 5555 if (!vports) 5556 return 1; 5557 5558 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) { 5559 shost = lpfc_shost_from_vport(vports[i]); 5560 spin_lock_irq(shost->host_lock); 5561 /* 5562 * IF the CVL_RCVD bit is not set then we have sent the 5563 * flogi. 5564 * If dev_loss fires while we are waiting we do not want to 5565 * unreg the fcf. 5566 */ 5567 if (!(vports[i]->fc_flag & FC_VPORT_CVL_RCVD)) { 5568 spin_unlock_irq(shost->host_lock); 5569 ret = 1; 5570 goto out; 5571 } 5572 list_for_each_entry(ndlp, &vports[i]->fc_nodes, nlp_listp) { 5573 if (NLP_CHK_NODE_ACT(ndlp) && ndlp->rport && 5574 (ndlp->rport->roles & FC_RPORT_ROLE_FCP_TARGET)) { 5575 ret = 1; 5576 spin_unlock_irq(shost->host_lock); 5577 goto out; 5578 } else { 5579 lpfc_printf_log(phba, KERN_INFO, LOG_ELS, 5580 "2624 RPI %x DID %x flg %x still " 5581 "logged in\n", 5582 ndlp->nlp_rpi, ndlp->nlp_DID, 5583 ndlp->nlp_flag); 5584 if (ndlp->nlp_flag & NLP_RPI_REGISTERED) 5585 ret = 1; 5586 } 5587 } 5588 spin_unlock_irq(shost->host_lock); 5589 } 5590 out: 5591 lpfc_destroy_vport_work_array(phba, vports); 5592 return ret; 5593 } 5594 5595 /** 5596 * lpfc_unregister_vfi_cmpl - Completion handler for unreg vfi. 5597 * @phba: Pointer to hba context object. 5598 * @mboxq: Pointer to mailbox object. 5599 * 5600 * This function frees memory associated with the mailbox command. 5601 */ 5602 static void 5603 lpfc_unregister_vfi_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq) 5604 { 5605 struct lpfc_vport *vport = mboxq->vport; 5606 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 5607 5608 if (mboxq->u.mb.mbxStatus) { 5609 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY|LOG_MBOX, 5610 "2555 UNREG_VFI mbxStatus error x%x " 5611 "HBA state x%x\n", 5612 mboxq->u.mb.mbxStatus, vport->port_state); 5613 } 5614 spin_lock_irq(shost->host_lock); 5615 phba->pport->fc_flag &= ~FC_VFI_REGISTERED; 5616 spin_unlock_irq(shost->host_lock); 5617 mempool_free(mboxq, phba->mbox_mem_pool); 5618 return; 5619 } 5620 5621 /** 5622 * lpfc_unregister_fcfi_cmpl - Completion handler for unreg fcfi. 5623 * @phba: Pointer to hba context object. 5624 * @mboxq: Pointer to mailbox object. 5625 * 5626 * This function frees memory associated with the mailbox command. 5627 */ 5628 static void 5629 lpfc_unregister_fcfi_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq) 5630 { 5631 struct lpfc_vport *vport = mboxq->vport; 5632 5633 if (mboxq->u.mb.mbxStatus) { 5634 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY|LOG_MBOX, 5635 "2550 UNREG_FCFI mbxStatus error x%x " 5636 "HBA state x%x\n", 5637 mboxq->u.mb.mbxStatus, vport->port_state); 5638 } 5639 mempool_free(mboxq, phba->mbox_mem_pool); 5640 return; 5641 } 5642 5643 /** 5644 * lpfc_unregister_fcf_prep - Unregister fcf record preparation 5645 * @phba: Pointer to hba context object. 5646 * 5647 * This function prepare the HBA for unregistering the currently registered 5648 * FCF from the HBA. It performs unregistering, in order, RPIs, VPIs, and 5649 * VFIs. 5650 */ 5651 int 5652 lpfc_unregister_fcf_prep(struct lpfc_hba *phba) 5653 { 5654 LPFC_MBOXQ_t *mbox; 5655 struct lpfc_vport **vports; 5656 struct lpfc_nodelist *ndlp; 5657 struct Scsi_Host *shost; 5658 int i, rc; 5659 5660 /* Unregister RPIs */ 5661 if (lpfc_fcf_inuse(phba)) 5662 lpfc_unreg_hba_rpis(phba); 5663 5664 /* At this point, all discovery is aborted */ 5665 phba->pport->port_state = LPFC_VPORT_UNKNOWN; 5666 5667 /* Unregister VPIs */ 5668 vports = lpfc_create_vport_work_array(phba); 5669 if (vports && (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)) 5670 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) { 5671 /* Stop FLOGI/FDISC retries */ 5672 ndlp = lpfc_findnode_did(vports[i], Fabric_DID); 5673 if (ndlp) 5674 lpfc_cancel_retry_delay_tmo(vports[i], ndlp); 5675 lpfc_cleanup_pending_mbox(vports[i]); 5676 if (phba->sli_rev == LPFC_SLI_REV4) 5677 lpfc_sli4_unreg_all_rpis(vports[i]); 5678 lpfc_mbx_unreg_vpi(vports[i]); 5679 shost = lpfc_shost_from_vport(vports[i]); 5680 spin_lock_irq(shost->host_lock); 5681 vports[i]->fc_flag |= FC_VPORT_NEEDS_INIT_VPI; 5682 vports[i]->vpi_state &= ~LPFC_VPI_REGISTERED; 5683 spin_unlock_irq(shost->host_lock); 5684 } 5685 lpfc_destroy_vport_work_array(phba, vports); 5686 5687 /* Cleanup any outstanding ELS commands */ 5688 lpfc_els_flush_all_cmd(phba); 5689 5690 /* Unregister VFI */ 5691 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 5692 if (!mbox) { 5693 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY|LOG_MBOX, 5694 "2556 UNREG_VFI mbox allocation failed" 5695 "HBA state x%x\n", phba->pport->port_state); 5696 return -ENOMEM; 5697 } 5698 5699 lpfc_unreg_vfi(mbox, phba->pport); 5700 mbox->vport = phba->pport; 5701 mbox->mbox_cmpl = lpfc_unregister_vfi_cmpl; 5702 5703 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT); 5704 if (rc == MBX_NOT_FINISHED) { 5705 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY|LOG_MBOX, 5706 "2557 UNREG_VFI issue mbox failed rc x%x " 5707 "HBA state x%x\n", 5708 rc, phba->pport->port_state); 5709 mempool_free(mbox, phba->mbox_mem_pool); 5710 return -EIO; 5711 } 5712 5713 shost = lpfc_shost_from_vport(phba->pport); 5714 spin_lock_irq(shost->host_lock); 5715 phba->pport->fc_flag &= ~FC_VFI_REGISTERED; 5716 spin_unlock_irq(shost->host_lock); 5717 5718 return 0; 5719 } 5720 5721 /** 5722 * lpfc_sli4_unregister_fcf - Unregister currently registered FCF record 5723 * @phba: Pointer to hba context object. 5724 * 5725 * This function issues synchronous unregister FCF mailbox command to HBA to 5726 * unregister the currently registered FCF record. The driver does not reset 5727 * the driver FCF usage state flags. 5728 * 5729 * Return 0 if successfully issued, none-zero otherwise. 5730 */ 5731 int 5732 lpfc_sli4_unregister_fcf(struct lpfc_hba *phba) 5733 { 5734 LPFC_MBOXQ_t *mbox; 5735 int rc; 5736 5737 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 5738 if (!mbox) { 5739 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY|LOG_MBOX, 5740 "2551 UNREG_FCFI mbox allocation failed" 5741 "HBA state x%x\n", phba->pport->port_state); 5742 return -ENOMEM; 5743 } 5744 lpfc_unreg_fcfi(mbox, phba->fcf.fcfi); 5745 mbox->vport = phba->pport; 5746 mbox->mbox_cmpl = lpfc_unregister_fcfi_cmpl; 5747 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT); 5748 5749 if (rc == MBX_NOT_FINISHED) { 5750 lpfc_printf_log(phba, KERN_ERR, LOG_SLI, 5751 "2552 Unregister FCFI command failed rc x%x " 5752 "HBA state x%x\n", 5753 rc, phba->pport->port_state); 5754 return -EINVAL; 5755 } 5756 return 0; 5757 } 5758 5759 /** 5760 * lpfc_unregister_fcf_rescan - Unregister currently registered fcf and rescan 5761 * @phba: Pointer to hba context object. 5762 * 5763 * This function unregisters the currently reigstered FCF. This function 5764 * also tries to find another FCF for discovery by rescan the HBA FCF table. 5765 */ 5766 void 5767 lpfc_unregister_fcf_rescan(struct lpfc_hba *phba) 5768 { 5769 int rc; 5770 5771 /* Preparation for unregistering fcf */ 5772 rc = lpfc_unregister_fcf_prep(phba); 5773 if (rc) { 5774 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY, 5775 "2748 Failed to prepare for unregistering " 5776 "HBA's FCF record: rc=%d\n", rc); 5777 return; 5778 } 5779 5780 /* Now, unregister FCF record and reset HBA FCF state */ 5781 rc = lpfc_sli4_unregister_fcf(phba); 5782 if (rc) 5783 return; 5784 /* Reset HBA FCF states after successful unregister FCF */ 5785 phba->fcf.fcf_flag = 0; 5786 phba->fcf.current_rec.flag = 0; 5787 5788 /* 5789 * If driver is not unloading, check if there is any other 5790 * FCF record that can be used for discovery. 5791 */ 5792 if ((phba->pport->load_flag & FC_UNLOADING) || 5793 (phba->link_state < LPFC_LINK_UP)) 5794 return; 5795 5796 /* This is considered as the initial FCF discovery scan */ 5797 spin_lock_irq(&phba->hbalock); 5798 phba->fcf.fcf_flag |= FCF_INIT_DISC; 5799 spin_unlock_irq(&phba->hbalock); 5800 5801 /* Reset FCF roundrobin bmask for new discovery */ 5802 lpfc_sli4_clear_fcf_rr_bmask(phba); 5803 5804 rc = lpfc_sli4_fcf_scan_read_fcf_rec(phba, LPFC_FCOE_FCF_GET_FIRST); 5805 5806 if (rc) { 5807 spin_lock_irq(&phba->hbalock); 5808 phba->fcf.fcf_flag &= ~FCF_INIT_DISC; 5809 spin_unlock_irq(&phba->hbalock); 5810 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY|LOG_MBOX, 5811 "2553 lpfc_unregister_unused_fcf failed " 5812 "to read FCF record HBA state x%x\n", 5813 phba->pport->port_state); 5814 } 5815 } 5816 5817 /** 5818 * lpfc_unregister_fcf - Unregister the currently registered fcf record 5819 * @phba: Pointer to hba context object. 5820 * 5821 * This function just unregisters the currently reigstered FCF. It does not 5822 * try to find another FCF for discovery. 5823 */ 5824 void 5825 lpfc_unregister_fcf(struct lpfc_hba *phba) 5826 { 5827 int rc; 5828 5829 /* Preparation for unregistering fcf */ 5830 rc = lpfc_unregister_fcf_prep(phba); 5831 if (rc) { 5832 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY, 5833 "2749 Failed to prepare for unregistering " 5834 "HBA's FCF record: rc=%d\n", rc); 5835 return; 5836 } 5837 5838 /* Now, unregister FCF record and reset HBA FCF state */ 5839 rc = lpfc_sli4_unregister_fcf(phba); 5840 if (rc) 5841 return; 5842 /* Set proper HBA FCF states after successful unregister FCF */ 5843 spin_lock_irq(&phba->hbalock); 5844 phba->fcf.fcf_flag &= ~FCF_REGISTERED; 5845 spin_unlock_irq(&phba->hbalock); 5846 } 5847 5848 /** 5849 * lpfc_unregister_unused_fcf - Unregister FCF if all devices are disconnected. 5850 * @phba: Pointer to hba context object. 5851 * 5852 * This function check if there are any connected remote port for the FCF and 5853 * if all the devices are disconnected, this function unregister FCFI. 5854 * This function also tries to use another FCF for discovery. 5855 */ 5856 void 5857 lpfc_unregister_unused_fcf(struct lpfc_hba *phba) 5858 { 5859 /* 5860 * If HBA is not running in FIP mode, if HBA does not support 5861 * FCoE, if FCF discovery is ongoing, or if FCF has not been 5862 * registered, do nothing. 5863 */ 5864 spin_lock_irq(&phba->hbalock); 5865 if (!(phba->hba_flag & HBA_FCOE_MODE) || 5866 !(phba->fcf.fcf_flag & FCF_REGISTERED) || 5867 !(phba->hba_flag & HBA_FIP_SUPPORT) || 5868 (phba->fcf.fcf_flag & FCF_DISCOVERY) || 5869 (phba->pport->port_state == LPFC_FLOGI)) { 5870 spin_unlock_irq(&phba->hbalock); 5871 return; 5872 } 5873 spin_unlock_irq(&phba->hbalock); 5874 5875 if (lpfc_fcf_inuse(phba)) 5876 return; 5877 5878 lpfc_unregister_fcf_rescan(phba); 5879 } 5880 5881 /** 5882 * lpfc_read_fcf_conn_tbl - Create driver FCF connection table. 5883 * @phba: Pointer to hba context object. 5884 * @buff: Buffer containing the FCF connection table as in the config 5885 * region. 5886 * This function create driver data structure for the FCF connection 5887 * record table read from config region 23. 5888 */ 5889 static void 5890 lpfc_read_fcf_conn_tbl(struct lpfc_hba *phba, 5891 uint8_t *buff) 5892 { 5893 struct lpfc_fcf_conn_entry *conn_entry, *next_conn_entry; 5894 struct lpfc_fcf_conn_hdr *conn_hdr; 5895 struct lpfc_fcf_conn_rec *conn_rec; 5896 uint32_t record_count; 5897 int i; 5898 5899 /* Free the current connect table */ 5900 list_for_each_entry_safe(conn_entry, next_conn_entry, 5901 &phba->fcf_conn_rec_list, list) { 5902 list_del_init(&conn_entry->list); 5903 kfree(conn_entry); 5904 } 5905 5906 conn_hdr = (struct lpfc_fcf_conn_hdr *) buff; 5907 record_count = conn_hdr->length * sizeof(uint32_t)/ 5908 sizeof(struct lpfc_fcf_conn_rec); 5909 5910 conn_rec = (struct lpfc_fcf_conn_rec *) 5911 (buff + sizeof(struct lpfc_fcf_conn_hdr)); 5912 5913 for (i = 0; i < record_count; i++) { 5914 if (!(conn_rec[i].flags & FCFCNCT_VALID)) 5915 continue; 5916 conn_entry = kzalloc(sizeof(struct lpfc_fcf_conn_entry), 5917 GFP_KERNEL); 5918 if (!conn_entry) { 5919 lpfc_printf_log(phba, KERN_ERR, LOG_INIT, 5920 "2566 Failed to allocate connection" 5921 " table entry\n"); 5922 return; 5923 } 5924 5925 memcpy(&conn_entry->conn_rec, &conn_rec[i], 5926 sizeof(struct lpfc_fcf_conn_rec)); 5927 conn_entry->conn_rec.vlan_tag = 5928 le16_to_cpu(conn_entry->conn_rec.vlan_tag) & 0xFFF; 5929 conn_entry->conn_rec.flags = 5930 le16_to_cpu(conn_entry->conn_rec.flags); 5931 list_add_tail(&conn_entry->list, 5932 &phba->fcf_conn_rec_list); 5933 } 5934 } 5935 5936 /** 5937 * lpfc_read_fcoe_param - Read FCoe parameters from conf region.. 5938 * @phba: Pointer to hba context object. 5939 * @buff: Buffer containing the FCoE parameter data structure. 5940 * 5941 * This function update driver data structure with config 5942 * parameters read from config region 23. 5943 */ 5944 static void 5945 lpfc_read_fcoe_param(struct lpfc_hba *phba, 5946 uint8_t *buff) 5947 { 5948 struct lpfc_fip_param_hdr *fcoe_param_hdr; 5949 struct lpfc_fcoe_params *fcoe_param; 5950 5951 fcoe_param_hdr = (struct lpfc_fip_param_hdr *) 5952 buff; 5953 fcoe_param = (struct lpfc_fcoe_params *) 5954 (buff + sizeof(struct lpfc_fip_param_hdr)); 5955 5956 if ((fcoe_param_hdr->parm_version != FIPP_VERSION) || 5957 (fcoe_param_hdr->length != FCOE_PARAM_LENGTH)) 5958 return; 5959 5960 if (fcoe_param_hdr->parm_flags & FIPP_VLAN_VALID) { 5961 phba->valid_vlan = 1; 5962 phba->vlan_id = le16_to_cpu(fcoe_param->vlan_tag) & 5963 0xFFF; 5964 } 5965 5966 phba->fc_map[0] = fcoe_param->fc_map[0]; 5967 phba->fc_map[1] = fcoe_param->fc_map[1]; 5968 phba->fc_map[2] = fcoe_param->fc_map[2]; 5969 return; 5970 } 5971 5972 /** 5973 * lpfc_get_rec_conf23 - Get a record type in config region data. 5974 * @buff: Buffer containing config region 23 data. 5975 * @size: Size of the data buffer. 5976 * @rec_type: Record type to be searched. 5977 * 5978 * This function searches config region data to find the beginning 5979 * of the record specified by record_type. If record found, this 5980 * function return pointer to the record else return NULL. 5981 */ 5982 static uint8_t * 5983 lpfc_get_rec_conf23(uint8_t *buff, uint32_t size, uint8_t rec_type) 5984 { 5985 uint32_t offset = 0, rec_length; 5986 5987 if ((buff[0] == LPFC_REGION23_LAST_REC) || 5988 (size < sizeof(uint32_t))) 5989 return NULL; 5990 5991 rec_length = buff[offset + 1]; 5992 5993 /* 5994 * One TLV record has one word header and number of data words 5995 * specified in the rec_length field of the record header. 5996 */ 5997 while ((offset + rec_length * sizeof(uint32_t) + sizeof(uint32_t)) 5998 <= size) { 5999 if (buff[offset] == rec_type) 6000 return &buff[offset]; 6001 6002 if (buff[offset] == LPFC_REGION23_LAST_REC) 6003 return NULL; 6004 6005 offset += rec_length * sizeof(uint32_t) + sizeof(uint32_t); 6006 rec_length = buff[offset + 1]; 6007 } 6008 return NULL; 6009 } 6010 6011 /** 6012 * lpfc_parse_fcoe_conf - Parse FCoE config data read from config region 23. 6013 * @phba: Pointer to lpfc_hba data structure. 6014 * @buff: Buffer containing config region 23 data. 6015 * @size: Size of the data buffer. 6016 * 6017 * This function parses the FCoE config parameters in config region 23 and 6018 * populate driver data structure with the parameters. 6019 */ 6020 void 6021 lpfc_parse_fcoe_conf(struct lpfc_hba *phba, 6022 uint8_t *buff, 6023 uint32_t size) 6024 { 6025 uint32_t offset = 0, rec_length; 6026 uint8_t *rec_ptr; 6027 6028 /* 6029 * If data size is less than 2 words signature and version cannot be 6030 * verified. 6031 */ 6032 if (size < 2*sizeof(uint32_t)) 6033 return; 6034 6035 /* Check the region signature first */ 6036 if (memcmp(buff, LPFC_REGION23_SIGNATURE, 4)) { 6037 lpfc_printf_log(phba, KERN_ERR, LOG_INIT, 6038 "2567 Config region 23 has bad signature\n"); 6039 return; 6040 } 6041 6042 offset += 4; 6043 6044 /* Check the data structure version */ 6045 if (buff[offset] != LPFC_REGION23_VERSION) { 6046 lpfc_printf_log(phba, KERN_ERR, LOG_INIT, 6047 "2568 Config region 23 has bad version\n"); 6048 return; 6049 } 6050 offset += 4; 6051 6052 rec_length = buff[offset + 1]; 6053 6054 /* Read FCoE param record */ 6055 rec_ptr = lpfc_get_rec_conf23(&buff[offset], 6056 size - offset, FCOE_PARAM_TYPE); 6057 if (rec_ptr) 6058 lpfc_read_fcoe_param(phba, rec_ptr); 6059 6060 /* Read FCF connection table */ 6061 rec_ptr = lpfc_get_rec_conf23(&buff[offset], 6062 size - offset, FCOE_CONN_TBL_TYPE); 6063 if (rec_ptr) 6064 lpfc_read_fcf_conn_tbl(phba, rec_ptr); 6065 6066 } 6067