1 /******************************************************************* 2 * This file is part of the Emulex Linux Device Driver for * 3 * Fibre Channel Host Bus Adapters. * 4 * Copyright (C) 2004-2012 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, LPFC_MBX_WAIT); 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 current->flags |= PF_NOFREEZE; 717 phba->data_flags = 0; 718 719 while (!kthread_should_stop()) { 720 /* wait and check worker queue activities */ 721 rc = wait_event_interruptible(phba->work_waitq, 722 (test_and_clear_bit(LPFC_DATA_READY, 723 &phba->data_flags) 724 || kthread_should_stop())); 725 /* Signal wakeup shall terminate the worker thread */ 726 if (rc) { 727 lpfc_printf_log(phba, KERN_ERR, LOG_ELS, 728 "0433 Wakeup on signal: rc=x%x\n", rc); 729 break; 730 } 731 732 /* Attend pending lpfc data processing */ 733 lpfc_work_done(phba); 734 } 735 phba->worker_thread = NULL; 736 lpfc_printf_log(phba, KERN_INFO, LOG_ELS, 737 "0432 Worker thread stopped.\n"); 738 return 0; 739 } 740 741 /* 742 * This is only called to handle FC worker events. Since this a rare 743 * occurrence, we allocate a struct lpfc_work_evt structure here instead of 744 * embedding it in the IOCB. 745 */ 746 int 747 lpfc_workq_post_event(struct lpfc_hba *phba, void *arg1, void *arg2, 748 uint32_t evt) 749 { 750 struct lpfc_work_evt *evtp; 751 unsigned long flags; 752 753 /* 754 * All Mailbox completions and LPFC_ELS_RING rcv ring IOCB events will 755 * be queued to worker thread for processing 756 */ 757 evtp = kmalloc(sizeof(struct lpfc_work_evt), GFP_ATOMIC); 758 if (!evtp) 759 return 0; 760 761 evtp->evt_arg1 = arg1; 762 evtp->evt_arg2 = arg2; 763 evtp->evt = evt; 764 765 spin_lock_irqsave(&phba->hbalock, flags); 766 list_add_tail(&evtp->evt_listp, &phba->work_list); 767 spin_unlock_irqrestore(&phba->hbalock, flags); 768 769 lpfc_worker_wake_up(phba); 770 771 return 1; 772 } 773 774 void 775 lpfc_cleanup_rpis(struct lpfc_vport *vport, int remove) 776 { 777 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 778 struct lpfc_hba *phba = vport->phba; 779 struct lpfc_nodelist *ndlp, *next_ndlp; 780 int rc; 781 782 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) { 783 if (!NLP_CHK_NODE_ACT(ndlp)) 784 continue; 785 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE) 786 continue; 787 if ((phba->sli3_options & LPFC_SLI3_VPORT_TEARDOWN) || 788 ((vport->port_type == LPFC_NPIV_PORT) && 789 (ndlp->nlp_DID == NameServer_DID))) 790 lpfc_unreg_rpi(vport, ndlp); 791 792 /* Leave Fabric nodes alone on link down */ 793 if ((phba->sli_rev < LPFC_SLI_REV4) && 794 (!remove && ndlp->nlp_type & NLP_FABRIC)) 795 continue; 796 rc = lpfc_disc_state_machine(vport, ndlp, NULL, 797 remove 798 ? NLP_EVT_DEVICE_RM 799 : NLP_EVT_DEVICE_RECOVERY); 800 } 801 if (phba->sli3_options & LPFC_SLI3_VPORT_TEARDOWN) { 802 if (phba->sli_rev == LPFC_SLI_REV4) 803 lpfc_sli4_unreg_all_rpis(vport); 804 lpfc_mbx_unreg_vpi(vport); 805 spin_lock_irq(shost->host_lock); 806 vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI; 807 spin_unlock_irq(shost->host_lock); 808 } 809 } 810 811 void 812 lpfc_port_link_failure(struct lpfc_vport *vport) 813 { 814 lpfc_vport_set_state(vport, FC_VPORT_LINKDOWN); 815 816 /* Cleanup any outstanding received buffers */ 817 lpfc_cleanup_rcv_buffers(vport); 818 819 /* Cleanup any outstanding RSCN activity */ 820 lpfc_els_flush_rscn(vport); 821 822 /* Cleanup any outstanding ELS commands */ 823 lpfc_els_flush_cmd(vport); 824 825 lpfc_cleanup_rpis(vport, 0); 826 827 /* Turn off discovery timer if its running */ 828 lpfc_can_disctmo(vport); 829 } 830 831 void 832 lpfc_linkdown_port(struct lpfc_vport *vport) 833 { 834 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 835 836 fc_host_post_event(shost, fc_get_event_number(), FCH_EVT_LINKDOWN, 0); 837 838 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, 839 "Link Down: state:x%x rtry:x%x flg:x%x", 840 vport->port_state, vport->fc_ns_retry, vport->fc_flag); 841 842 lpfc_port_link_failure(vport); 843 844 /* Stop delayed Nport discovery */ 845 spin_lock_irq(shost->host_lock); 846 vport->fc_flag &= ~FC_DISC_DELAYED; 847 spin_unlock_irq(shost->host_lock); 848 del_timer_sync(&vport->delayed_disc_tmo); 849 } 850 851 int 852 lpfc_linkdown(struct lpfc_hba *phba) 853 { 854 struct lpfc_vport *vport = phba->pport; 855 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 856 struct lpfc_vport **vports; 857 LPFC_MBOXQ_t *mb; 858 int i; 859 860 if (phba->link_state == LPFC_LINK_DOWN) 861 return 0; 862 863 /* Block all SCSI stack I/Os */ 864 lpfc_scsi_dev_block(phba); 865 866 spin_lock_irq(&phba->hbalock); 867 phba->fcf.fcf_flag &= ~(FCF_AVAILABLE | FCF_SCAN_DONE); 868 spin_unlock_irq(&phba->hbalock); 869 if (phba->link_state > LPFC_LINK_DOWN) { 870 phba->link_state = LPFC_LINK_DOWN; 871 spin_lock_irq(shost->host_lock); 872 phba->pport->fc_flag &= ~FC_LBIT; 873 spin_unlock_irq(shost->host_lock); 874 } 875 vports = lpfc_create_vport_work_array(phba); 876 if (vports != NULL) 877 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) { 878 /* Issue a LINK DOWN event to all nodes */ 879 lpfc_linkdown_port(vports[i]); 880 } 881 lpfc_destroy_vport_work_array(phba, vports); 882 /* Clean up any firmware default rpi's */ 883 mb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 884 if (mb) { 885 lpfc_unreg_did(phba, 0xffff, LPFC_UNREG_ALL_DFLT_RPIS, mb); 886 mb->vport = vport; 887 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl; 888 if (lpfc_sli_issue_mbox(phba, mb, MBX_NOWAIT) 889 == MBX_NOT_FINISHED) { 890 mempool_free(mb, phba->mbox_mem_pool); 891 } 892 } 893 894 /* Setup myDID for link up if we are in pt2pt mode */ 895 if (phba->pport->fc_flag & FC_PT2PT) { 896 phba->pport->fc_myDID = 0; 897 mb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 898 if (mb) { 899 lpfc_config_link(phba, mb); 900 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl; 901 mb->vport = vport; 902 if (lpfc_sli_issue_mbox(phba, mb, MBX_NOWAIT) 903 == MBX_NOT_FINISHED) { 904 mempool_free(mb, phba->mbox_mem_pool); 905 } 906 } 907 spin_lock_irq(shost->host_lock); 908 phba->pport->fc_flag &= ~(FC_PT2PT | FC_PT2PT_PLOGI); 909 spin_unlock_irq(shost->host_lock); 910 } 911 912 return 0; 913 } 914 915 static void 916 lpfc_linkup_cleanup_nodes(struct lpfc_vport *vport) 917 { 918 struct lpfc_nodelist *ndlp; 919 920 list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) { 921 if (!NLP_CHK_NODE_ACT(ndlp)) 922 continue; 923 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE) 924 continue; 925 if (ndlp->nlp_type & NLP_FABRIC) { 926 /* On Linkup its safe to clean up the ndlp 927 * from Fabric connections. 928 */ 929 if (ndlp->nlp_DID != Fabric_DID) 930 lpfc_unreg_rpi(vport, ndlp); 931 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE); 932 } else if (!(ndlp->nlp_flag & NLP_NPR_ADISC)) { 933 /* Fail outstanding IO now since device is 934 * marked for PLOGI. 935 */ 936 lpfc_unreg_rpi(vport, ndlp); 937 } 938 } 939 } 940 941 static void 942 lpfc_linkup_port(struct lpfc_vport *vport) 943 { 944 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 945 struct lpfc_hba *phba = vport->phba; 946 947 if ((vport->load_flag & FC_UNLOADING) != 0) 948 return; 949 950 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, 951 "Link Up: top:x%x speed:x%x flg:x%x", 952 phba->fc_topology, phba->fc_linkspeed, phba->link_flag); 953 954 /* If NPIV is not enabled, only bring the physical port up */ 955 if (!(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) && 956 (vport != phba->pport)) 957 return; 958 959 fc_host_post_event(shost, fc_get_event_number(), FCH_EVT_LINKUP, 0); 960 961 spin_lock_irq(shost->host_lock); 962 vport->fc_flag &= ~(FC_PT2PT | FC_PT2PT_PLOGI | FC_ABORT_DISCOVERY | 963 FC_RSCN_MODE | FC_NLP_MORE | FC_RSCN_DISCOVERY); 964 vport->fc_flag |= FC_NDISC_ACTIVE; 965 vport->fc_ns_retry = 0; 966 spin_unlock_irq(shost->host_lock); 967 968 if (vport->fc_flag & FC_LBIT) 969 lpfc_linkup_cleanup_nodes(vport); 970 971 } 972 973 static int 974 lpfc_linkup(struct lpfc_hba *phba) 975 { 976 struct lpfc_vport **vports; 977 int i; 978 979 lpfc_cleanup_wt_rrqs(phba); 980 phba->link_state = LPFC_LINK_UP; 981 982 /* Unblock fabric iocbs if they are blocked */ 983 clear_bit(FABRIC_COMANDS_BLOCKED, &phba->bit_flags); 984 del_timer_sync(&phba->fabric_block_timer); 985 986 vports = lpfc_create_vport_work_array(phba); 987 if (vports != NULL) 988 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) 989 lpfc_linkup_port(vports[i]); 990 lpfc_destroy_vport_work_array(phba, vports); 991 if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) && 992 (phba->sli_rev < LPFC_SLI_REV4)) 993 lpfc_issue_clear_la(phba, phba->pport); 994 995 return 0; 996 } 997 998 /* 999 * This routine handles processing a CLEAR_LA mailbox 1000 * command upon completion. It is setup in the LPFC_MBOXQ 1001 * as the completion routine when the command is 1002 * handed off to the SLI layer. 1003 */ 1004 static void 1005 lpfc_mbx_cmpl_clear_la(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 1006 { 1007 struct lpfc_vport *vport = pmb->vport; 1008 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 1009 struct lpfc_sli *psli = &phba->sli; 1010 MAILBOX_t *mb = &pmb->u.mb; 1011 uint32_t control; 1012 1013 /* Since we don't do discovery right now, turn these off here */ 1014 psli->ring[psli->extra_ring].flag &= ~LPFC_STOP_IOCB_EVENT; 1015 psli->ring[psli->fcp_ring].flag &= ~LPFC_STOP_IOCB_EVENT; 1016 psli->ring[psli->next_ring].flag &= ~LPFC_STOP_IOCB_EVENT; 1017 1018 /* Check for error */ 1019 if ((mb->mbxStatus) && (mb->mbxStatus != 0x1601)) { 1020 /* CLEAR_LA mbox error <mbxStatus> state <hba_state> */ 1021 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX, 1022 "0320 CLEAR_LA mbxStatus error x%x hba " 1023 "state x%x\n", 1024 mb->mbxStatus, vport->port_state); 1025 phba->link_state = LPFC_HBA_ERROR; 1026 goto out; 1027 } 1028 1029 if (vport->port_type == LPFC_PHYSICAL_PORT) 1030 phba->link_state = LPFC_HBA_READY; 1031 1032 spin_lock_irq(&phba->hbalock); 1033 psli->sli_flag |= LPFC_PROCESS_LA; 1034 control = readl(phba->HCregaddr); 1035 control |= HC_LAINT_ENA; 1036 writel(control, phba->HCregaddr); 1037 readl(phba->HCregaddr); /* flush */ 1038 spin_unlock_irq(&phba->hbalock); 1039 mempool_free(pmb, phba->mbox_mem_pool); 1040 return; 1041 1042 out: 1043 /* Device Discovery completes */ 1044 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, 1045 "0225 Device Discovery completes\n"); 1046 mempool_free(pmb, phba->mbox_mem_pool); 1047 1048 spin_lock_irq(shost->host_lock); 1049 vport->fc_flag &= ~FC_ABORT_DISCOVERY; 1050 spin_unlock_irq(shost->host_lock); 1051 1052 lpfc_can_disctmo(vport); 1053 1054 /* turn on Link Attention interrupts */ 1055 1056 spin_lock_irq(&phba->hbalock); 1057 psli->sli_flag |= LPFC_PROCESS_LA; 1058 control = readl(phba->HCregaddr); 1059 control |= HC_LAINT_ENA; 1060 writel(control, phba->HCregaddr); 1061 readl(phba->HCregaddr); /* flush */ 1062 spin_unlock_irq(&phba->hbalock); 1063 1064 return; 1065 } 1066 1067 1068 static void 1069 lpfc_mbx_cmpl_local_config_link(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 1070 { 1071 struct lpfc_vport *vport = pmb->vport; 1072 1073 if (pmb->u.mb.mbxStatus) 1074 goto out; 1075 1076 mempool_free(pmb, phba->mbox_mem_pool); 1077 1078 /* don't perform discovery for SLI4 loopback diagnostic test */ 1079 if ((phba->sli_rev == LPFC_SLI_REV4) && 1080 !(phba->hba_flag & HBA_FCOE_MODE) && 1081 (phba->link_flag & LS_LOOPBACK_MODE)) 1082 return; 1083 1084 if (phba->fc_topology == LPFC_TOPOLOGY_LOOP && 1085 vport->fc_flag & FC_PUBLIC_LOOP && 1086 !(vport->fc_flag & FC_LBIT)) { 1087 /* Need to wait for FAN - use discovery timer 1088 * for timeout. port_state is identically 1089 * LPFC_LOCAL_CFG_LINK while waiting for FAN 1090 */ 1091 lpfc_set_disctmo(vport); 1092 return; 1093 } 1094 1095 /* Start discovery by sending a FLOGI. port_state is identically 1096 * LPFC_FLOGI while waiting for FLOGI cmpl 1097 */ 1098 if (vport->port_state != LPFC_FLOGI || vport->fc_flag & FC_PT2PT_PLOGI) 1099 lpfc_initial_flogi(vport); 1100 return; 1101 1102 out: 1103 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX, 1104 "0306 CONFIG_LINK mbxStatus error x%x " 1105 "HBA state x%x\n", 1106 pmb->u.mb.mbxStatus, vport->port_state); 1107 mempool_free(pmb, phba->mbox_mem_pool); 1108 1109 lpfc_linkdown(phba); 1110 1111 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY, 1112 "0200 CONFIG_LINK bad hba state x%x\n", 1113 vport->port_state); 1114 1115 lpfc_issue_clear_la(phba, vport); 1116 return; 1117 } 1118 1119 /** 1120 * lpfc_sli4_clear_fcf_rr_bmask 1121 * @phba pointer to the struct lpfc_hba for this port. 1122 * This fucnction resets the round robin bit mask and clears the 1123 * fcf priority list. The list deletions are done while holding the 1124 * hbalock. The ON_LIST flag and the FLOGI_FAILED flags are cleared 1125 * from the lpfc_fcf_pri record. 1126 **/ 1127 void 1128 lpfc_sli4_clear_fcf_rr_bmask(struct lpfc_hba *phba) 1129 { 1130 struct lpfc_fcf_pri *fcf_pri; 1131 struct lpfc_fcf_pri *next_fcf_pri; 1132 memset(phba->fcf.fcf_rr_bmask, 0, sizeof(*phba->fcf.fcf_rr_bmask)); 1133 spin_lock_irq(&phba->hbalock); 1134 list_for_each_entry_safe(fcf_pri, next_fcf_pri, 1135 &phba->fcf.fcf_pri_list, list) { 1136 list_del_init(&fcf_pri->list); 1137 fcf_pri->fcf_rec.flag = 0; 1138 } 1139 spin_unlock_irq(&phba->hbalock); 1140 } 1141 static void 1142 lpfc_mbx_cmpl_reg_fcfi(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq) 1143 { 1144 struct lpfc_vport *vport = mboxq->vport; 1145 1146 if (mboxq->u.mb.mbxStatus) { 1147 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX, 1148 "2017 REG_FCFI mbxStatus error x%x " 1149 "HBA state x%x\n", 1150 mboxq->u.mb.mbxStatus, vport->port_state); 1151 goto fail_out; 1152 } 1153 1154 /* Start FCoE discovery by sending a FLOGI. */ 1155 phba->fcf.fcfi = bf_get(lpfc_reg_fcfi_fcfi, &mboxq->u.mqe.un.reg_fcfi); 1156 /* Set the FCFI registered flag */ 1157 spin_lock_irq(&phba->hbalock); 1158 phba->fcf.fcf_flag |= FCF_REGISTERED; 1159 spin_unlock_irq(&phba->hbalock); 1160 1161 /* If there is a pending FCoE event, restart FCF table scan. */ 1162 if ((!(phba->hba_flag & FCF_RR_INPROG)) && 1163 lpfc_check_pending_fcoe_event(phba, LPFC_UNREG_FCF)) 1164 goto fail_out; 1165 1166 /* Mark successful completion of FCF table scan */ 1167 spin_lock_irq(&phba->hbalock); 1168 phba->fcf.fcf_flag |= (FCF_SCAN_DONE | FCF_IN_USE); 1169 phba->hba_flag &= ~FCF_TS_INPROG; 1170 if (vport->port_state != LPFC_FLOGI) { 1171 phba->hba_flag |= FCF_RR_INPROG; 1172 spin_unlock_irq(&phba->hbalock); 1173 lpfc_issue_init_vfi(vport); 1174 goto out; 1175 } 1176 spin_unlock_irq(&phba->hbalock); 1177 goto out; 1178 1179 fail_out: 1180 spin_lock_irq(&phba->hbalock); 1181 phba->hba_flag &= ~FCF_RR_INPROG; 1182 spin_unlock_irq(&phba->hbalock); 1183 out: 1184 mempool_free(mboxq, phba->mbox_mem_pool); 1185 } 1186 1187 /** 1188 * lpfc_fab_name_match - Check if the fcf fabric name match. 1189 * @fab_name: pointer to fabric name. 1190 * @new_fcf_record: pointer to fcf record. 1191 * 1192 * This routine compare the fcf record's fabric name with provided 1193 * fabric name. If the fabric name are identical this function 1194 * returns 1 else return 0. 1195 **/ 1196 static uint32_t 1197 lpfc_fab_name_match(uint8_t *fab_name, struct fcf_record *new_fcf_record) 1198 { 1199 if (fab_name[0] != bf_get(lpfc_fcf_record_fab_name_0, new_fcf_record)) 1200 return 0; 1201 if (fab_name[1] != bf_get(lpfc_fcf_record_fab_name_1, new_fcf_record)) 1202 return 0; 1203 if (fab_name[2] != bf_get(lpfc_fcf_record_fab_name_2, new_fcf_record)) 1204 return 0; 1205 if (fab_name[3] != bf_get(lpfc_fcf_record_fab_name_3, new_fcf_record)) 1206 return 0; 1207 if (fab_name[4] != bf_get(lpfc_fcf_record_fab_name_4, new_fcf_record)) 1208 return 0; 1209 if (fab_name[5] != bf_get(lpfc_fcf_record_fab_name_5, new_fcf_record)) 1210 return 0; 1211 if (fab_name[6] != bf_get(lpfc_fcf_record_fab_name_6, new_fcf_record)) 1212 return 0; 1213 if (fab_name[7] != bf_get(lpfc_fcf_record_fab_name_7, new_fcf_record)) 1214 return 0; 1215 return 1; 1216 } 1217 1218 /** 1219 * lpfc_sw_name_match - Check if the fcf switch name match. 1220 * @fab_name: pointer to fabric name. 1221 * @new_fcf_record: pointer to fcf record. 1222 * 1223 * This routine compare the fcf record's switch name with provided 1224 * switch name. If the switch name are identical this function 1225 * returns 1 else return 0. 1226 **/ 1227 static uint32_t 1228 lpfc_sw_name_match(uint8_t *sw_name, struct fcf_record *new_fcf_record) 1229 { 1230 if (sw_name[0] != bf_get(lpfc_fcf_record_switch_name_0, new_fcf_record)) 1231 return 0; 1232 if (sw_name[1] != bf_get(lpfc_fcf_record_switch_name_1, new_fcf_record)) 1233 return 0; 1234 if (sw_name[2] != bf_get(lpfc_fcf_record_switch_name_2, new_fcf_record)) 1235 return 0; 1236 if (sw_name[3] != bf_get(lpfc_fcf_record_switch_name_3, new_fcf_record)) 1237 return 0; 1238 if (sw_name[4] != bf_get(lpfc_fcf_record_switch_name_4, new_fcf_record)) 1239 return 0; 1240 if (sw_name[5] != bf_get(lpfc_fcf_record_switch_name_5, new_fcf_record)) 1241 return 0; 1242 if (sw_name[6] != bf_get(lpfc_fcf_record_switch_name_6, new_fcf_record)) 1243 return 0; 1244 if (sw_name[7] != bf_get(lpfc_fcf_record_switch_name_7, new_fcf_record)) 1245 return 0; 1246 return 1; 1247 } 1248 1249 /** 1250 * lpfc_mac_addr_match - Check if the fcf mac address match. 1251 * @mac_addr: pointer to mac address. 1252 * @new_fcf_record: pointer to fcf record. 1253 * 1254 * This routine compare the fcf record's mac address with HBA's 1255 * FCF mac address. If the mac addresses are identical this function 1256 * returns 1 else return 0. 1257 **/ 1258 static uint32_t 1259 lpfc_mac_addr_match(uint8_t *mac_addr, struct fcf_record *new_fcf_record) 1260 { 1261 if (mac_addr[0] != bf_get(lpfc_fcf_record_mac_0, new_fcf_record)) 1262 return 0; 1263 if (mac_addr[1] != bf_get(lpfc_fcf_record_mac_1, new_fcf_record)) 1264 return 0; 1265 if (mac_addr[2] != bf_get(lpfc_fcf_record_mac_2, new_fcf_record)) 1266 return 0; 1267 if (mac_addr[3] != bf_get(lpfc_fcf_record_mac_3, new_fcf_record)) 1268 return 0; 1269 if (mac_addr[4] != bf_get(lpfc_fcf_record_mac_4, new_fcf_record)) 1270 return 0; 1271 if (mac_addr[5] != bf_get(lpfc_fcf_record_mac_5, new_fcf_record)) 1272 return 0; 1273 return 1; 1274 } 1275 1276 static bool 1277 lpfc_vlan_id_match(uint16_t curr_vlan_id, uint16_t new_vlan_id) 1278 { 1279 return (curr_vlan_id == new_vlan_id); 1280 } 1281 1282 /** 1283 * lpfc_update_fcf_record - Update driver fcf record 1284 * __lpfc_update_fcf_record_pri - update the lpfc_fcf_pri record. 1285 * @phba: pointer to lpfc hba data structure. 1286 * @fcf_index: Index for the lpfc_fcf_record. 1287 * @new_fcf_record: pointer to hba fcf record. 1288 * 1289 * This routine updates the driver FCF priority record from the new HBA FCF 1290 * record. This routine is called with the host lock held. 1291 **/ 1292 static void 1293 __lpfc_update_fcf_record_pri(struct lpfc_hba *phba, uint16_t fcf_index, 1294 struct fcf_record *new_fcf_record 1295 ) 1296 { 1297 struct lpfc_fcf_pri *fcf_pri; 1298 1299 fcf_pri = &phba->fcf.fcf_pri[fcf_index]; 1300 fcf_pri->fcf_rec.fcf_index = fcf_index; 1301 /* FCF record priority */ 1302 fcf_pri->fcf_rec.priority = new_fcf_record->fip_priority; 1303 1304 } 1305 1306 /** 1307 * lpfc_copy_fcf_record - Copy fcf information to lpfc_hba. 1308 * @fcf: pointer to driver fcf record. 1309 * @new_fcf_record: pointer to fcf record. 1310 * 1311 * This routine copies the FCF information from the FCF 1312 * record to lpfc_hba data structure. 1313 **/ 1314 static void 1315 lpfc_copy_fcf_record(struct lpfc_fcf_rec *fcf_rec, 1316 struct fcf_record *new_fcf_record) 1317 { 1318 /* Fabric name */ 1319 fcf_rec->fabric_name[0] = 1320 bf_get(lpfc_fcf_record_fab_name_0, new_fcf_record); 1321 fcf_rec->fabric_name[1] = 1322 bf_get(lpfc_fcf_record_fab_name_1, new_fcf_record); 1323 fcf_rec->fabric_name[2] = 1324 bf_get(lpfc_fcf_record_fab_name_2, new_fcf_record); 1325 fcf_rec->fabric_name[3] = 1326 bf_get(lpfc_fcf_record_fab_name_3, new_fcf_record); 1327 fcf_rec->fabric_name[4] = 1328 bf_get(lpfc_fcf_record_fab_name_4, new_fcf_record); 1329 fcf_rec->fabric_name[5] = 1330 bf_get(lpfc_fcf_record_fab_name_5, new_fcf_record); 1331 fcf_rec->fabric_name[6] = 1332 bf_get(lpfc_fcf_record_fab_name_6, new_fcf_record); 1333 fcf_rec->fabric_name[7] = 1334 bf_get(lpfc_fcf_record_fab_name_7, new_fcf_record); 1335 /* Mac address */ 1336 fcf_rec->mac_addr[0] = bf_get(lpfc_fcf_record_mac_0, new_fcf_record); 1337 fcf_rec->mac_addr[1] = bf_get(lpfc_fcf_record_mac_1, new_fcf_record); 1338 fcf_rec->mac_addr[2] = bf_get(lpfc_fcf_record_mac_2, new_fcf_record); 1339 fcf_rec->mac_addr[3] = bf_get(lpfc_fcf_record_mac_3, new_fcf_record); 1340 fcf_rec->mac_addr[4] = bf_get(lpfc_fcf_record_mac_4, new_fcf_record); 1341 fcf_rec->mac_addr[5] = bf_get(lpfc_fcf_record_mac_5, new_fcf_record); 1342 /* FCF record index */ 1343 fcf_rec->fcf_indx = bf_get(lpfc_fcf_record_fcf_index, new_fcf_record); 1344 /* FCF record priority */ 1345 fcf_rec->priority = new_fcf_record->fip_priority; 1346 /* Switch name */ 1347 fcf_rec->switch_name[0] = 1348 bf_get(lpfc_fcf_record_switch_name_0, new_fcf_record); 1349 fcf_rec->switch_name[1] = 1350 bf_get(lpfc_fcf_record_switch_name_1, new_fcf_record); 1351 fcf_rec->switch_name[2] = 1352 bf_get(lpfc_fcf_record_switch_name_2, new_fcf_record); 1353 fcf_rec->switch_name[3] = 1354 bf_get(lpfc_fcf_record_switch_name_3, new_fcf_record); 1355 fcf_rec->switch_name[4] = 1356 bf_get(lpfc_fcf_record_switch_name_4, new_fcf_record); 1357 fcf_rec->switch_name[5] = 1358 bf_get(lpfc_fcf_record_switch_name_5, new_fcf_record); 1359 fcf_rec->switch_name[6] = 1360 bf_get(lpfc_fcf_record_switch_name_6, new_fcf_record); 1361 fcf_rec->switch_name[7] = 1362 bf_get(lpfc_fcf_record_switch_name_7, new_fcf_record); 1363 } 1364 1365 /** 1366 * lpfc_update_fcf_record - Update driver fcf record 1367 * @phba: pointer to lpfc hba data structure. 1368 * @fcf_rec: pointer to driver fcf record. 1369 * @new_fcf_record: pointer to hba fcf record. 1370 * @addr_mode: address mode to be set to the driver fcf record. 1371 * @vlan_id: vlan tag to be set to the driver fcf record. 1372 * @flag: flag bits to be set to the driver fcf record. 1373 * 1374 * This routine updates the driver FCF record from the new HBA FCF record 1375 * together with the address mode, vlan_id, and other informations. This 1376 * routine is called with the host lock held. 1377 **/ 1378 static void 1379 __lpfc_update_fcf_record(struct lpfc_hba *phba, struct lpfc_fcf_rec *fcf_rec, 1380 struct fcf_record *new_fcf_record, uint32_t addr_mode, 1381 uint16_t vlan_id, uint32_t flag) 1382 { 1383 /* Copy the fields from the HBA's FCF record */ 1384 lpfc_copy_fcf_record(fcf_rec, new_fcf_record); 1385 /* Update other fields of driver FCF record */ 1386 fcf_rec->addr_mode = addr_mode; 1387 fcf_rec->vlan_id = vlan_id; 1388 fcf_rec->flag |= (flag | RECORD_VALID); 1389 __lpfc_update_fcf_record_pri(phba, 1390 bf_get(lpfc_fcf_record_fcf_index, new_fcf_record), 1391 new_fcf_record); 1392 } 1393 1394 /** 1395 * lpfc_register_fcf - Register the FCF with hba. 1396 * @phba: pointer to lpfc hba data structure. 1397 * 1398 * This routine issues a register fcfi mailbox command to register 1399 * the fcf with HBA. 1400 **/ 1401 static void 1402 lpfc_register_fcf(struct lpfc_hba *phba) 1403 { 1404 LPFC_MBOXQ_t *fcf_mbxq; 1405 int rc; 1406 1407 spin_lock_irq(&phba->hbalock); 1408 /* If the FCF is not available do nothing. */ 1409 if (!(phba->fcf.fcf_flag & FCF_AVAILABLE)) { 1410 phba->hba_flag &= ~(FCF_TS_INPROG | FCF_RR_INPROG); 1411 spin_unlock_irq(&phba->hbalock); 1412 return; 1413 } 1414 1415 /* The FCF is already registered, start discovery */ 1416 if (phba->fcf.fcf_flag & FCF_REGISTERED) { 1417 phba->fcf.fcf_flag |= (FCF_SCAN_DONE | FCF_IN_USE); 1418 phba->hba_flag &= ~FCF_TS_INPROG; 1419 if (phba->pport->port_state != LPFC_FLOGI) { 1420 phba->hba_flag |= FCF_RR_INPROG; 1421 spin_unlock_irq(&phba->hbalock); 1422 lpfc_initial_flogi(phba->pport); 1423 return; 1424 } 1425 spin_unlock_irq(&phba->hbalock); 1426 return; 1427 } 1428 spin_unlock_irq(&phba->hbalock); 1429 1430 fcf_mbxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 1431 if (!fcf_mbxq) { 1432 spin_lock_irq(&phba->hbalock); 1433 phba->hba_flag &= ~(FCF_TS_INPROG | FCF_RR_INPROG); 1434 spin_unlock_irq(&phba->hbalock); 1435 return; 1436 } 1437 1438 lpfc_reg_fcfi(phba, fcf_mbxq); 1439 fcf_mbxq->vport = phba->pport; 1440 fcf_mbxq->mbox_cmpl = lpfc_mbx_cmpl_reg_fcfi; 1441 rc = lpfc_sli_issue_mbox(phba, fcf_mbxq, MBX_NOWAIT); 1442 if (rc == MBX_NOT_FINISHED) { 1443 spin_lock_irq(&phba->hbalock); 1444 phba->hba_flag &= ~(FCF_TS_INPROG | FCF_RR_INPROG); 1445 spin_unlock_irq(&phba->hbalock); 1446 mempool_free(fcf_mbxq, phba->mbox_mem_pool); 1447 } 1448 1449 return; 1450 } 1451 1452 /** 1453 * lpfc_match_fcf_conn_list - Check if the FCF record can be used for discovery. 1454 * @phba: pointer to lpfc hba data structure. 1455 * @new_fcf_record: pointer to fcf record. 1456 * @boot_flag: Indicates if this record used by boot bios. 1457 * @addr_mode: The address mode to be used by this FCF 1458 * @vlan_id: The vlan id to be used as vlan tagging by this FCF. 1459 * 1460 * This routine compare the fcf record with connect list obtained from the 1461 * config region to decide if this FCF can be used for SAN discovery. It returns 1462 * 1 if this record can be used for SAN discovery else return zero. If this FCF 1463 * record can be used for SAN discovery, the boot_flag will indicate if this FCF 1464 * is used by boot bios and addr_mode will indicate the addressing mode to be 1465 * used for this FCF when the function returns. 1466 * If the FCF record need to be used with a particular vlan id, the vlan is 1467 * set in the vlan_id on return of the function. If not VLAN tagging need to 1468 * be used with the FCF vlan_id will be set to LPFC_FCOE_NULL_VID; 1469 **/ 1470 static int 1471 lpfc_match_fcf_conn_list(struct lpfc_hba *phba, 1472 struct fcf_record *new_fcf_record, 1473 uint32_t *boot_flag, uint32_t *addr_mode, 1474 uint16_t *vlan_id) 1475 { 1476 struct lpfc_fcf_conn_entry *conn_entry; 1477 int i, j, fcf_vlan_id = 0; 1478 1479 /* Find the lowest VLAN id in the FCF record */ 1480 for (i = 0; i < 512; i++) { 1481 if (new_fcf_record->vlan_bitmap[i]) { 1482 fcf_vlan_id = i * 8; 1483 j = 0; 1484 while (!((new_fcf_record->vlan_bitmap[i] >> j) & 1)) { 1485 j++; 1486 fcf_vlan_id++; 1487 } 1488 break; 1489 } 1490 } 1491 1492 /* If FCF not available return 0 */ 1493 if (!bf_get(lpfc_fcf_record_fcf_avail, new_fcf_record) || 1494 !bf_get(lpfc_fcf_record_fcf_valid, new_fcf_record)) 1495 return 0; 1496 1497 if (!(phba->hba_flag & HBA_FIP_SUPPORT)) { 1498 *boot_flag = 0; 1499 *addr_mode = bf_get(lpfc_fcf_record_mac_addr_prov, 1500 new_fcf_record); 1501 if (phba->valid_vlan) 1502 *vlan_id = phba->vlan_id; 1503 else 1504 *vlan_id = LPFC_FCOE_NULL_VID; 1505 return 1; 1506 } 1507 1508 /* 1509 * If there are no FCF connection table entry, driver connect to all 1510 * FCFs. 1511 */ 1512 if (list_empty(&phba->fcf_conn_rec_list)) { 1513 *boot_flag = 0; 1514 *addr_mode = bf_get(lpfc_fcf_record_mac_addr_prov, 1515 new_fcf_record); 1516 1517 /* 1518 * When there are no FCF connect entries, use driver's default 1519 * addressing mode - FPMA. 1520 */ 1521 if (*addr_mode & LPFC_FCF_FPMA) 1522 *addr_mode = LPFC_FCF_FPMA; 1523 1524 /* If FCF record report a vlan id use that vlan id */ 1525 if (fcf_vlan_id) 1526 *vlan_id = fcf_vlan_id; 1527 else 1528 *vlan_id = LPFC_FCOE_NULL_VID; 1529 return 1; 1530 } 1531 1532 list_for_each_entry(conn_entry, 1533 &phba->fcf_conn_rec_list, list) { 1534 if (!(conn_entry->conn_rec.flags & FCFCNCT_VALID)) 1535 continue; 1536 1537 if ((conn_entry->conn_rec.flags & FCFCNCT_FBNM_VALID) && 1538 !lpfc_fab_name_match(conn_entry->conn_rec.fabric_name, 1539 new_fcf_record)) 1540 continue; 1541 if ((conn_entry->conn_rec.flags & FCFCNCT_SWNM_VALID) && 1542 !lpfc_sw_name_match(conn_entry->conn_rec.switch_name, 1543 new_fcf_record)) 1544 continue; 1545 if (conn_entry->conn_rec.flags & FCFCNCT_VLAN_VALID) { 1546 /* 1547 * If the vlan bit map does not have the bit set for the 1548 * vlan id to be used, then it is not a match. 1549 */ 1550 if (!(new_fcf_record->vlan_bitmap 1551 [conn_entry->conn_rec.vlan_tag / 8] & 1552 (1 << (conn_entry->conn_rec.vlan_tag % 8)))) 1553 continue; 1554 } 1555 1556 /* 1557 * If connection record does not support any addressing mode, 1558 * skip the FCF record. 1559 */ 1560 if (!(bf_get(lpfc_fcf_record_mac_addr_prov, new_fcf_record) 1561 & (LPFC_FCF_FPMA | LPFC_FCF_SPMA))) 1562 continue; 1563 1564 /* 1565 * Check if the connection record specifies a required 1566 * addressing mode. 1567 */ 1568 if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) && 1569 !(conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED)) { 1570 1571 /* 1572 * If SPMA required but FCF not support this continue. 1573 */ 1574 if ((conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) && 1575 !(bf_get(lpfc_fcf_record_mac_addr_prov, 1576 new_fcf_record) & LPFC_FCF_SPMA)) 1577 continue; 1578 1579 /* 1580 * If FPMA required but FCF not support this continue. 1581 */ 1582 if (!(conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) && 1583 !(bf_get(lpfc_fcf_record_mac_addr_prov, 1584 new_fcf_record) & LPFC_FCF_FPMA)) 1585 continue; 1586 } 1587 1588 /* 1589 * This fcf record matches filtering criteria. 1590 */ 1591 if (conn_entry->conn_rec.flags & FCFCNCT_BOOT) 1592 *boot_flag = 1; 1593 else 1594 *boot_flag = 0; 1595 1596 /* 1597 * If user did not specify any addressing mode, or if the 1598 * preferred addressing mode specified by user is not supported 1599 * by FCF, allow fabric to pick the addressing mode. 1600 */ 1601 *addr_mode = bf_get(lpfc_fcf_record_mac_addr_prov, 1602 new_fcf_record); 1603 /* 1604 * If the user specified a required address mode, assign that 1605 * address mode 1606 */ 1607 if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) && 1608 (!(conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED))) 1609 *addr_mode = (conn_entry->conn_rec.flags & 1610 FCFCNCT_AM_SPMA) ? 1611 LPFC_FCF_SPMA : LPFC_FCF_FPMA; 1612 /* 1613 * If the user specified a preferred address mode, use the 1614 * addr mode only if FCF support the addr_mode. 1615 */ 1616 else if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) && 1617 (conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED) && 1618 (conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) && 1619 (*addr_mode & LPFC_FCF_SPMA)) 1620 *addr_mode = LPFC_FCF_SPMA; 1621 else if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) && 1622 (conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED) && 1623 !(conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) && 1624 (*addr_mode & LPFC_FCF_FPMA)) 1625 *addr_mode = LPFC_FCF_FPMA; 1626 1627 /* If matching connect list has a vlan id, use it */ 1628 if (conn_entry->conn_rec.flags & FCFCNCT_VLAN_VALID) 1629 *vlan_id = conn_entry->conn_rec.vlan_tag; 1630 /* 1631 * If no vlan id is specified in connect list, use the vlan id 1632 * in the FCF record 1633 */ 1634 else if (fcf_vlan_id) 1635 *vlan_id = fcf_vlan_id; 1636 else 1637 *vlan_id = LPFC_FCOE_NULL_VID; 1638 1639 return 1; 1640 } 1641 1642 return 0; 1643 } 1644 1645 /** 1646 * lpfc_check_pending_fcoe_event - Check if there is pending fcoe event. 1647 * @phba: pointer to lpfc hba data structure. 1648 * @unreg_fcf: Unregister FCF if FCF table need to be re-scaned. 1649 * 1650 * This function check if there is any fcoe event pending while driver 1651 * scan FCF entries. If there is any pending event, it will restart the 1652 * FCF saning and return 1 else return 0. 1653 */ 1654 int 1655 lpfc_check_pending_fcoe_event(struct lpfc_hba *phba, uint8_t unreg_fcf) 1656 { 1657 /* 1658 * If the Link is up and no FCoE events while in the 1659 * FCF discovery, no need to restart FCF discovery. 1660 */ 1661 if ((phba->link_state >= LPFC_LINK_UP) && 1662 (phba->fcoe_eventtag == phba->fcoe_eventtag_at_fcf_scan)) 1663 return 0; 1664 1665 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 1666 "2768 Pending link or FCF event during current " 1667 "handling of the previous event: link_state:x%x, " 1668 "evt_tag_at_scan:x%x, evt_tag_current:x%x\n", 1669 phba->link_state, phba->fcoe_eventtag_at_fcf_scan, 1670 phba->fcoe_eventtag); 1671 1672 spin_lock_irq(&phba->hbalock); 1673 phba->fcf.fcf_flag &= ~FCF_AVAILABLE; 1674 spin_unlock_irq(&phba->hbalock); 1675 1676 if (phba->link_state >= LPFC_LINK_UP) { 1677 lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY, 1678 "2780 Restart FCF table scan due to " 1679 "pending FCF event:evt_tag_at_scan:x%x, " 1680 "evt_tag_current:x%x\n", 1681 phba->fcoe_eventtag_at_fcf_scan, 1682 phba->fcoe_eventtag); 1683 lpfc_sli4_fcf_scan_read_fcf_rec(phba, LPFC_FCOE_FCF_GET_FIRST); 1684 } else { 1685 /* 1686 * Do not continue FCF discovery and clear FCF_TS_INPROG 1687 * flag 1688 */ 1689 lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY, 1690 "2833 Stop FCF discovery process due to link " 1691 "state change (x%x)\n", phba->link_state); 1692 spin_lock_irq(&phba->hbalock); 1693 phba->hba_flag &= ~(FCF_TS_INPROG | FCF_RR_INPROG); 1694 phba->fcf.fcf_flag &= ~(FCF_REDISC_FOV | FCF_DISCOVERY); 1695 spin_unlock_irq(&phba->hbalock); 1696 } 1697 1698 /* Unregister the currently registered FCF if required */ 1699 if (unreg_fcf) { 1700 spin_lock_irq(&phba->hbalock); 1701 phba->fcf.fcf_flag &= ~FCF_REGISTERED; 1702 spin_unlock_irq(&phba->hbalock); 1703 lpfc_sli4_unregister_fcf(phba); 1704 } 1705 return 1; 1706 } 1707 1708 /** 1709 * lpfc_sli4_new_fcf_random_select - Randomly select an eligible new fcf record 1710 * @phba: pointer to lpfc hba data structure. 1711 * @fcf_cnt: number of eligible fcf record seen so far. 1712 * 1713 * This function makes an running random selection decision on FCF record to 1714 * use through a sequence of @fcf_cnt eligible FCF records with equal 1715 * probability. To perform integer manunipulation of random numbers with 1716 * size unit32_t, the lower 16 bits of the 32-bit random number returned 1717 * from random32() are taken as the random random number generated. 1718 * 1719 * Returns true when outcome is for the newly read FCF record should be 1720 * chosen; otherwise, return false when outcome is for keeping the previously 1721 * chosen FCF record. 1722 **/ 1723 static bool 1724 lpfc_sli4_new_fcf_random_select(struct lpfc_hba *phba, uint32_t fcf_cnt) 1725 { 1726 uint32_t rand_num; 1727 1728 /* Get 16-bit uniform random number */ 1729 rand_num = (0xFFFF & random32()); 1730 1731 /* Decision with probability 1/fcf_cnt */ 1732 if ((fcf_cnt * rand_num) < 0xFFFF) 1733 return true; 1734 else 1735 return false; 1736 } 1737 1738 /** 1739 * lpfc_sli4_fcf_rec_mbox_parse - Parse read_fcf mbox command. 1740 * @phba: pointer to lpfc hba data structure. 1741 * @mboxq: pointer to mailbox object. 1742 * @next_fcf_index: pointer to holder of next fcf index. 1743 * 1744 * This routine parses the non-embedded fcf mailbox command by performing the 1745 * necessarily error checking, non-embedded read FCF record mailbox command 1746 * SGE parsing, and endianness swapping. 1747 * 1748 * Returns the pointer to the new FCF record in the non-embedded mailbox 1749 * command DMA memory if successfully, other NULL. 1750 */ 1751 static struct fcf_record * 1752 lpfc_sli4_fcf_rec_mbox_parse(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq, 1753 uint16_t *next_fcf_index) 1754 { 1755 void *virt_addr; 1756 dma_addr_t phys_addr; 1757 struct lpfc_mbx_sge sge; 1758 struct lpfc_mbx_read_fcf_tbl *read_fcf; 1759 uint32_t shdr_status, shdr_add_status; 1760 union lpfc_sli4_cfg_shdr *shdr; 1761 struct fcf_record *new_fcf_record; 1762 1763 /* Get the first SGE entry from the non-embedded DMA memory. This 1764 * routine only uses a single SGE. 1765 */ 1766 lpfc_sli4_mbx_sge_get(mboxq, 0, &sge); 1767 phys_addr = getPaddr(sge.pa_hi, sge.pa_lo); 1768 if (unlikely(!mboxq->sge_array)) { 1769 lpfc_printf_log(phba, KERN_ERR, LOG_MBOX, 1770 "2524 Failed to get the non-embedded SGE " 1771 "virtual address\n"); 1772 return NULL; 1773 } 1774 virt_addr = mboxq->sge_array->addr[0]; 1775 1776 shdr = (union lpfc_sli4_cfg_shdr *)virt_addr; 1777 shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response); 1778 shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response); 1779 if (shdr_status || shdr_add_status) { 1780 if (shdr_status == STATUS_FCF_TABLE_EMPTY) 1781 lpfc_printf_log(phba, KERN_ERR, LOG_FIP, 1782 "2726 READ_FCF_RECORD Indicates empty " 1783 "FCF table.\n"); 1784 else 1785 lpfc_printf_log(phba, KERN_ERR, LOG_FIP, 1786 "2521 READ_FCF_RECORD mailbox failed " 1787 "with status x%x add_status x%x, " 1788 "mbx\n", shdr_status, shdr_add_status); 1789 return NULL; 1790 } 1791 1792 /* Interpreting the returned information of the FCF record */ 1793 read_fcf = (struct lpfc_mbx_read_fcf_tbl *)virt_addr; 1794 lpfc_sli_pcimem_bcopy(read_fcf, read_fcf, 1795 sizeof(struct lpfc_mbx_read_fcf_tbl)); 1796 *next_fcf_index = bf_get(lpfc_mbx_read_fcf_tbl_nxt_vindx, read_fcf); 1797 new_fcf_record = (struct fcf_record *)(virt_addr + 1798 sizeof(struct lpfc_mbx_read_fcf_tbl)); 1799 lpfc_sli_pcimem_bcopy(new_fcf_record, new_fcf_record, 1800 offsetof(struct fcf_record, vlan_bitmap)); 1801 new_fcf_record->word137 = le32_to_cpu(new_fcf_record->word137); 1802 new_fcf_record->word138 = le32_to_cpu(new_fcf_record->word138); 1803 1804 return new_fcf_record; 1805 } 1806 1807 /** 1808 * lpfc_sli4_log_fcf_record_info - Log the information of a fcf record 1809 * @phba: pointer to lpfc hba data structure. 1810 * @fcf_record: pointer to the fcf record. 1811 * @vlan_id: the lowest vlan identifier associated to this fcf record. 1812 * @next_fcf_index: the index to the next fcf record in hba's fcf table. 1813 * 1814 * This routine logs the detailed FCF record if the LOG_FIP loggin is 1815 * enabled. 1816 **/ 1817 static void 1818 lpfc_sli4_log_fcf_record_info(struct lpfc_hba *phba, 1819 struct fcf_record *fcf_record, 1820 uint16_t vlan_id, 1821 uint16_t next_fcf_index) 1822 { 1823 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 1824 "2764 READ_FCF_RECORD:\n" 1825 "\tFCF_Index : x%x\n" 1826 "\tFCF_Avail : x%x\n" 1827 "\tFCF_Valid : x%x\n" 1828 "\tFIP_Priority : x%x\n" 1829 "\tMAC_Provider : x%x\n" 1830 "\tLowest VLANID : x%x\n" 1831 "\tFCF_MAC Addr : x%x:%x:%x:%x:%x:%x\n" 1832 "\tFabric_Name : x%x:%x:%x:%x:%x:%x:%x:%x\n" 1833 "\tSwitch_Name : x%x:%x:%x:%x:%x:%x:%x:%x\n" 1834 "\tNext_FCF_Index: x%x\n", 1835 bf_get(lpfc_fcf_record_fcf_index, fcf_record), 1836 bf_get(lpfc_fcf_record_fcf_avail, fcf_record), 1837 bf_get(lpfc_fcf_record_fcf_valid, fcf_record), 1838 fcf_record->fip_priority, 1839 bf_get(lpfc_fcf_record_mac_addr_prov, fcf_record), 1840 vlan_id, 1841 bf_get(lpfc_fcf_record_mac_0, fcf_record), 1842 bf_get(lpfc_fcf_record_mac_1, fcf_record), 1843 bf_get(lpfc_fcf_record_mac_2, fcf_record), 1844 bf_get(lpfc_fcf_record_mac_3, fcf_record), 1845 bf_get(lpfc_fcf_record_mac_4, fcf_record), 1846 bf_get(lpfc_fcf_record_mac_5, fcf_record), 1847 bf_get(lpfc_fcf_record_fab_name_0, fcf_record), 1848 bf_get(lpfc_fcf_record_fab_name_1, fcf_record), 1849 bf_get(lpfc_fcf_record_fab_name_2, fcf_record), 1850 bf_get(lpfc_fcf_record_fab_name_3, fcf_record), 1851 bf_get(lpfc_fcf_record_fab_name_4, fcf_record), 1852 bf_get(lpfc_fcf_record_fab_name_5, fcf_record), 1853 bf_get(lpfc_fcf_record_fab_name_6, fcf_record), 1854 bf_get(lpfc_fcf_record_fab_name_7, fcf_record), 1855 bf_get(lpfc_fcf_record_switch_name_0, fcf_record), 1856 bf_get(lpfc_fcf_record_switch_name_1, fcf_record), 1857 bf_get(lpfc_fcf_record_switch_name_2, fcf_record), 1858 bf_get(lpfc_fcf_record_switch_name_3, fcf_record), 1859 bf_get(lpfc_fcf_record_switch_name_4, fcf_record), 1860 bf_get(lpfc_fcf_record_switch_name_5, fcf_record), 1861 bf_get(lpfc_fcf_record_switch_name_6, fcf_record), 1862 bf_get(lpfc_fcf_record_switch_name_7, fcf_record), 1863 next_fcf_index); 1864 } 1865 1866 /** 1867 lpfc_sli4_fcf_record_match - testing new FCF record for matching existing FCF 1868 * @phba: pointer to lpfc hba data structure. 1869 * @fcf_rec: pointer to an existing FCF record. 1870 * @new_fcf_record: pointer to a new FCF record. 1871 * @new_vlan_id: vlan id from the new FCF record. 1872 * 1873 * This function performs matching test of a new FCF record against an existing 1874 * FCF record. If the new_vlan_id passed in is LPFC_FCOE_IGNORE_VID, vlan id 1875 * will not be used as part of the FCF record matching criteria. 1876 * 1877 * Returns true if all the fields matching, otherwise returns false. 1878 */ 1879 static bool 1880 lpfc_sli4_fcf_record_match(struct lpfc_hba *phba, 1881 struct lpfc_fcf_rec *fcf_rec, 1882 struct fcf_record *new_fcf_record, 1883 uint16_t new_vlan_id) 1884 { 1885 if (new_vlan_id != LPFC_FCOE_IGNORE_VID) 1886 if (!lpfc_vlan_id_match(fcf_rec->vlan_id, new_vlan_id)) 1887 return false; 1888 if (!lpfc_mac_addr_match(fcf_rec->mac_addr, new_fcf_record)) 1889 return false; 1890 if (!lpfc_sw_name_match(fcf_rec->switch_name, new_fcf_record)) 1891 return false; 1892 if (!lpfc_fab_name_match(fcf_rec->fabric_name, new_fcf_record)) 1893 return false; 1894 if (fcf_rec->priority != new_fcf_record->fip_priority) 1895 return false; 1896 return true; 1897 } 1898 1899 /** 1900 * lpfc_sli4_fcf_rr_next_proc - processing next roundrobin fcf 1901 * @vport: Pointer to vport object. 1902 * @fcf_index: index to next fcf. 1903 * 1904 * This function processing the roundrobin fcf failover to next fcf index. 1905 * When this function is invoked, there will be a current fcf registered 1906 * for flogi. 1907 * Return: 0 for continue retrying flogi on currently registered fcf; 1908 * 1 for stop flogi on currently registered fcf; 1909 */ 1910 int lpfc_sli4_fcf_rr_next_proc(struct lpfc_vport *vport, uint16_t fcf_index) 1911 { 1912 struct lpfc_hba *phba = vport->phba; 1913 int rc; 1914 1915 if (fcf_index == LPFC_FCOE_FCF_NEXT_NONE) { 1916 spin_lock_irq(&phba->hbalock); 1917 if (phba->hba_flag & HBA_DEVLOSS_TMO) { 1918 spin_unlock_irq(&phba->hbalock); 1919 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 1920 "2872 Devloss tmo with no eligible " 1921 "FCF, unregister in-use FCF (x%x) " 1922 "and rescan FCF table\n", 1923 phba->fcf.current_rec.fcf_indx); 1924 lpfc_unregister_fcf_rescan(phba); 1925 goto stop_flogi_current_fcf; 1926 } 1927 /* Mark the end to FLOGI roundrobin failover */ 1928 phba->hba_flag &= ~FCF_RR_INPROG; 1929 /* Allow action to new fcf asynchronous event */ 1930 phba->fcf.fcf_flag &= ~(FCF_AVAILABLE | FCF_SCAN_DONE); 1931 spin_unlock_irq(&phba->hbalock); 1932 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 1933 "2865 No FCF available, stop roundrobin FCF " 1934 "failover and change port state:x%x/x%x\n", 1935 phba->pport->port_state, LPFC_VPORT_UNKNOWN); 1936 phba->pport->port_state = LPFC_VPORT_UNKNOWN; 1937 goto stop_flogi_current_fcf; 1938 } else { 1939 lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_ELS, 1940 "2794 Try FLOGI roundrobin FCF failover to " 1941 "(x%x)\n", fcf_index); 1942 rc = lpfc_sli4_fcf_rr_read_fcf_rec(phba, fcf_index); 1943 if (rc) 1944 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP | LOG_ELS, 1945 "2761 FLOGI roundrobin FCF failover " 1946 "failed (rc:x%x) to read FCF (x%x)\n", 1947 rc, phba->fcf.current_rec.fcf_indx); 1948 else 1949 goto stop_flogi_current_fcf; 1950 } 1951 return 0; 1952 1953 stop_flogi_current_fcf: 1954 lpfc_can_disctmo(vport); 1955 return 1; 1956 } 1957 1958 /** 1959 * lpfc_sli4_fcf_pri_list_del 1960 * @phba: pointer to lpfc hba data structure. 1961 * @fcf_index the index of the fcf record to delete 1962 * This routine checks the on list flag of the fcf_index to be deleted. 1963 * If it is one the list then it is removed from the list, and the flag 1964 * is cleared. This routine grab the hbalock before removing the fcf 1965 * record from the list. 1966 **/ 1967 static void lpfc_sli4_fcf_pri_list_del(struct lpfc_hba *phba, 1968 uint16_t fcf_index) 1969 { 1970 struct lpfc_fcf_pri *new_fcf_pri; 1971 1972 new_fcf_pri = &phba->fcf.fcf_pri[fcf_index]; 1973 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 1974 "3058 deleting idx x%x pri x%x flg x%x\n", 1975 fcf_index, new_fcf_pri->fcf_rec.priority, 1976 new_fcf_pri->fcf_rec.flag); 1977 spin_lock_irq(&phba->hbalock); 1978 if (new_fcf_pri->fcf_rec.flag & LPFC_FCF_ON_PRI_LIST) { 1979 if (phba->fcf.current_rec.priority == 1980 new_fcf_pri->fcf_rec.priority) 1981 phba->fcf.eligible_fcf_cnt--; 1982 list_del_init(&new_fcf_pri->list); 1983 new_fcf_pri->fcf_rec.flag &= ~LPFC_FCF_ON_PRI_LIST; 1984 } 1985 spin_unlock_irq(&phba->hbalock); 1986 } 1987 1988 /** 1989 * lpfc_sli4_set_fcf_flogi_fail 1990 * @phba: pointer to lpfc hba data structure. 1991 * @fcf_index the index of the fcf record to update 1992 * This routine acquires the hbalock and then set the LPFC_FCF_FLOGI_FAILED 1993 * flag so the the round robin slection for the particular priority level 1994 * will try a different fcf record that does not have this bit set. 1995 * If the fcf record is re-read for any reason this flag is cleared brfore 1996 * adding it to the priority list. 1997 **/ 1998 void 1999 lpfc_sli4_set_fcf_flogi_fail(struct lpfc_hba *phba, uint16_t fcf_index) 2000 { 2001 struct lpfc_fcf_pri *new_fcf_pri; 2002 new_fcf_pri = &phba->fcf.fcf_pri[fcf_index]; 2003 spin_lock_irq(&phba->hbalock); 2004 new_fcf_pri->fcf_rec.flag |= LPFC_FCF_FLOGI_FAILED; 2005 spin_unlock_irq(&phba->hbalock); 2006 } 2007 2008 /** 2009 * lpfc_sli4_fcf_pri_list_add 2010 * @phba: pointer to lpfc hba data structure. 2011 * @fcf_index the index of the fcf record to add 2012 * This routine checks the priority of the fcf_index to be added. 2013 * If it is a lower priority than the current head of the fcf_pri list 2014 * then it is added to the list in the right order. 2015 * If it is the same priority as the current head of the list then it 2016 * is added to the head of the list and its bit in the rr_bmask is set. 2017 * If the fcf_index to be added is of a higher priority than the current 2018 * head of the list then the rr_bmask is cleared, its bit is set in the 2019 * rr_bmask and it is added to the head of the list. 2020 * returns: 2021 * 0=success 1=failure 2022 **/ 2023 int lpfc_sli4_fcf_pri_list_add(struct lpfc_hba *phba, uint16_t fcf_index, 2024 struct fcf_record *new_fcf_record) 2025 { 2026 uint16_t current_fcf_pri; 2027 uint16_t last_index; 2028 struct lpfc_fcf_pri *fcf_pri; 2029 struct lpfc_fcf_pri *next_fcf_pri; 2030 struct lpfc_fcf_pri *new_fcf_pri; 2031 int ret; 2032 2033 new_fcf_pri = &phba->fcf.fcf_pri[fcf_index]; 2034 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2035 "3059 adding idx x%x pri x%x flg x%x\n", 2036 fcf_index, new_fcf_record->fip_priority, 2037 new_fcf_pri->fcf_rec.flag); 2038 spin_lock_irq(&phba->hbalock); 2039 if (new_fcf_pri->fcf_rec.flag & LPFC_FCF_ON_PRI_LIST) 2040 list_del_init(&new_fcf_pri->list); 2041 new_fcf_pri->fcf_rec.fcf_index = fcf_index; 2042 new_fcf_pri->fcf_rec.priority = new_fcf_record->fip_priority; 2043 if (list_empty(&phba->fcf.fcf_pri_list)) { 2044 list_add(&new_fcf_pri->list, &phba->fcf.fcf_pri_list); 2045 ret = lpfc_sli4_fcf_rr_index_set(phba, 2046 new_fcf_pri->fcf_rec.fcf_index); 2047 goto out; 2048 } 2049 2050 last_index = find_first_bit(phba->fcf.fcf_rr_bmask, 2051 LPFC_SLI4_FCF_TBL_INDX_MAX); 2052 if (last_index >= LPFC_SLI4_FCF_TBL_INDX_MAX) { 2053 ret = 0; /* Empty rr list */ 2054 goto out; 2055 } 2056 current_fcf_pri = phba->fcf.fcf_pri[last_index].fcf_rec.priority; 2057 if (new_fcf_pri->fcf_rec.priority <= current_fcf_pri) { 2058 list_add(&new_fcf_pri->list, &phba->fcf.fcf_pri_list); 2059 if (new_fcf_pri->fcf_rec.priority < current_fcf_pri) { 2060 memset(phba->fcf.fcf_rr_bmask, 0, 2061 sizeof(*phba->fcf.fcf_rr_bmask)); 2062 /* fcfs_at_this_priority_level = 1; */ 2063 phba->fcf.eligible_fcf_cnt = 1; 2064 } else 2065 /* fcfs_at_this_priority_level++; */ 2066 phba->fcf.eligible_fcf_cnt++; 2067 ret = lpfc_sli4_fcf_rr_index_set(phba, 2068 new_fcf_pri->fcf_rec.fcf_index); 2069 goto out; 2070 } 2071 2072 list_for_each_entry_safe(fcf_pri, next_fcf_pri, 2073 &phba->fcf.fcf_pri_list, list) { 2074 if (new_fcf_pri->fcf_rec.priority <= 2075 fcf_pri->fcf_rec.priority) { 2076 if (fcf_pri->list.prev == &phba->fcf.fcf_pri_list) 2077 list_add(&new_fcf_pri->list, 2078 &phba->fcf.fcf_pri_list); 2079 else 2080 list_add(&new_fcf_pri->list, 2081 &((struct lpfc_fcf_pri *) 2082 fcf_pri->list.prev)->list); 2083 ret = 0; 2084 goto out; 2085 } else if (fcf_pri->list.next == &phba->fcf.fcf_pri_list 2086 || new_fcf_pri->fcf_rec.priority < 2087 next_fcf_pri->fcf_rec.priority) { 2088 list_add(&new_fcf_pri->list, &fcf_pri->list); 2089 ret = 0; 2090 goto out; 2091 } 2092 if (new_fcf_pri->fcf_rec.priority > fcf_pri->fcf_rec.priority) 2093 continue; 2094 2095 } 2096 ret = 1; 2097 out: 2098 /* we use = instead of |= to clear the FLOGI_FAILED flag. */ 2099 new_fcf_pri->fcf_rec.flag = LPFC_FCF_ON_PRI_LIST; 2100 spin_unlock_irq(&phba->hbalock); 2101 return ret; 2102 } 2103 2104 /** 2105 * lpfc_mbx_cmpl_fcf_scan_read_fcf_rec - fcf scan read_fcf mbox cmpl handler. 2106 * @phba: pointer to lpfc hba data structure. 2107 * @mboxq: pointer to mailbox object. 2108 * 2109 * This function iterates through all the fcf records available in 2110 * HBA and chooses the optimal FCF record for discovery. After finding 2111 * the FCF for discovery it registers the FCF record and kicks start 2112 * discovery. 2113 * If FCF_IN_USE flag is set in currently used FCF, the routine tries to 2114 * use an FCF record which matches fabric name and mac address of the 2115 * currently used FCF record. 2116 * If the driver supports only one FCF, it will try to use the FCF record 2117 * used by BOOT_BIOS. 2118 */ 2119 void 2120 lpfc_mbx_cmpl_fcf_scan_read_fcf_rec(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq) 2121 { 2122 struct fcf_record *new_fcf_record; 2123 uint32_t boot_flag, addr_mode; 2124 uint16_t fcf_index, next_fcf_index; 2125 struct lpfc_fcf_rec *fcf_rec = NULL; 2126 uint16_t vlan_id; 2127 uint32_t seed; 2128 bool select_new_fcf; 2129 int rc; 2130 2131 /* If there is pending FCoE event restart FCF table scan */ 2132 if (lpfc_check_pending_fcoe_event(phba, LPFC_SKIP_UNREG_FCF)) { 2133 lpfc_sli4_mbox_cmd_free(phba, mboxq); 2134 return; 2135 } 2136 2137 /* Parse the FCF record from the non-embedded mailbox command */ 2138 new_fcf_record = lpfc_sli4_fcf_rec_mbox_parse(phba, mboxq, 2139 &next_fcf_index); 2140 if (!new_fcf_record) { 2141 lpfc_printf_log(phba, KERN_ERR, LOG_FIP, 2142 "2765 Mailbox command READ_FCF_RECORD " 2143 "failed to retrieve a FCF record.\n"); 2144 /* Let next new FCF event trigger fast failover */ 2145 spin_lock_irq(&phba->hbalock); 2146 phba->hba_flag &= ~FCF_TS_INPROG; 2147 spin_unlock_irq(&phba->hbalock); 2148 lpfc_sli4_mbox_cmd_free(phba, mboxq); 2149 return; 2150 } 2151 2152 /* Check the FCF record against the connection list */ 2153 rc = lpfc_match_fcf_conn_list(phba, new_fcf_record, &boot_flag, 2154 &addr_mode, &vlan_id); 2155 2156 /* Log the FCF record information if turned on */ 2157 lpfc_sli4_log_fcf_record_info(phba, new_fcf_record, vlan_id, 2158 next_fcf_index); 2159 2160 /* 2161 * If the fcf record does not match with connect list entries 2162 * read the next entry; otherwise, this is an eligible FCF 2163 * record for roundrobin FCF failover. 2164 */ 2165 if (!rc) { 2166 lpfc_sli4_fcf_pri_list_del(phba, 2167 bf_get(lpfc_fcf_record_fcf_index, 2168 new_fcf_record)); 2169 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP, 2170 "2781 FCF (x%x) failed connection " 2171 "list check: (x%x/x%x)\n", 2172 bf_get(lpfc_fcf_record_fcf_index, 2173 new_fcf_record), 2174 bf_get(lpfc_fcf_record_fcf_avail, 2175 new_fcf_record), 2176 bf_get(lpfc_fcf_record_fcf_valid, 2177 new_fcf_record)); 2178 if ((phba->fcf.fcf_flag & FCF_IN_USE) && 2179 lpfc_sli4_fcf_record_match(phba, &phba->fcf.current_rec, 2180 new_fcf_record, LPFC_FCOE_IGNORE_VID)) { 2181 if (bf_get(lpfc_fcf_record_fcf_index, new_fcf_record) != 2182 phba->fcf.current_rec.fcf_indx) { 2183 lpfc_printf_log(phba, KERN_ERR, LOG_FIP, 2184 "2862 FCF (x%x) matches property " 2185 "of in-use FCF (x%x)\n", 2186 bf_get(lpfc_fcf_record_fcf_index, 2187 new_fcf_record), 2188 phba->fcf.current_rec.fcf_indx); 2189 goto read_next_fcf; 2190 } 2191 /* 2192 * In case the current in-use FCF record becomes 2193 * invalid/unavailable during FCF discovery that 2194 * was not triggered by fast FCF failover process, 2195 * treat it as fast FCF failover. 2196 */ 2197 if (!(phba->fcf.fcf_flag & FCF_REDISC_PEND) && 2198 !(phba->fcf.fcf_flag & FCF_REDISC_FOV)) { 2199 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP, 2200 "2835 Invalid in-use FCF " 2201 "(x%x), enter FCF failover " 2202 "table scan.\n", 2203 phba->fcf.current_rec.fcf_indx); 2204 spin_lock_irq(&phba->hbalock); 2205 phba->fcf.fcf_flag |= FCF_REDISC_FOV; 2206 spin_unlock_irq(&phba->hbalock); 2207 lpfc_sli4_mbox_cmd_free(phba, mboxq); 2208 lpfc_sli4_fcf_scan_read_fcf_rec(phba, 2209 LPFC_FCOE_FCF_GET_FIRST); 2210 return; 2211 } 2212 } 2213 goto read_next_fcf; 2214 } else { 2215 fcf_index = bf_get(lpfc_fcf_record_fcf_index, new_fcf_record); 2216 rc = lpfc_sli4_fcf_pri_list_add(phba, fcf_index, 2217 new_fcf_record); 2218 if (rc) 2219 goto read_next_fcf; 2220 } 2221 2222 /* 2223 * If this is not the first FCF discovery of the HBA, use last 2224 * FCF record for the discovery. The condition that a rescan 2225 * matches the in-use FCF record: fabric name, switch name, mac 2226 * address, and vlan_id. 2227 */ 2228 spin_lock_irq(&phba->hbalock); 2229 if (phba->fcf.fcf_flag & FCF_IN_USE) { 2230 if (phba->cfg_fcf_failover_policy == LPFC_FCF_FOV && 2231 lpfc_sli4_fcf_record_match(phba, &phba->fcf.current_rec, 2232 new_fcf_record, vlan_id)) { 2233 if (bf_get(lpfc_fcf_record_fcf_index, new_fcf_record) == 2234 phba->fcf.current_rec.fcf_indx) { 2235 phba->fcf.fcf_flag |= FCF_AVAILABLE; 2236 if (phba->fcf.fcf_flag & FCF_REDISC_PEND) 2237 /* Stop FCF redisc wait timer */ 2238 __lpfc_sli4_stop_fcf_redisc_wait_timer( 2239 phba); 2240 else if (phba->fcf.fcf_flag & FCF_REDISC_FOV) 2241 /* Fast failover, mark completed */ 2242 phba->fcf.fcf_flag &= ~FCF_REDISC_FOV; 2243 spin_unlock_irq(&phba->hbalock); 2244 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2245 "2836 New FCF matches in-use " 2246 "FCF (x%x)\n", 2247 phba->fcf.current_rec.fcf_indx); 2248 goto out; 2249 } else 2250 lpfc_printf_log(phba, KERN_ERR, LOG_FIP, 2251 "2863 New FCF (x%x) matches " 2252 "property of in-use FCF (x%x)\n", 2253 bf_get(lpfc_fcf_record_fcf_index, 2254 new_fcf_record), 2255 phba->fcf.current_rec.fcf_indx); 2256 } 2257 /* 2258 * Read next FCF record from HBA searching for the matching 2259 * with in-use record only if not during the fast failover 2260 * period. In case of fast failover period, it shall try to 2261 * determine whether the FCF record just read should be the 2262 * next candidate. 2263 */ 2264 if (!(phba->fcf.fcf_flag & FCF_REDISC_FOV)) { 2265 spin_unlock_irq(&phba->hbalock); 2266 goto read_next_fcf; 2267 } 2268 } 2269 /* 2270 * Update on failover FCF record only if it's in FCF fast-failover 2271 * period; otherwise, update on current FCF record. 2272 */ 2273 if (phba->fcf.fcf_flag & FCF_REDISC_FOV) 2274 fcf_rec = &phba->fcf.failover_rec; 2275 else 2276 fcf_rec = &phba->fcf.current_rec; 2277 2278 if (phba->fcf.fcf_flag & FCF_AVAILABLE) { 2279 /* 2280 * If the driver FCF record does not have boot flag 2281 * set and new hba fcf record has boot flag set, use 2282 * the new hba fcf record. 2283 */ 2284 if (boot_flag && !(fcf_rec->flag & BOOT_ENABLE)) { 2285 /* Choose this FCF record */ 2286 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2287 "2837 Update current FCF record " 2288 "(x%x) with new FCF record (x%x)\n", 2289 fcf_rec->fcf_indx, 2290 bf_get(lpfc_fcf_record_fcf_index, 2291 new_fcf_record)); 2292 __lpfc_update_fcf_record(phba, fcf_rec, new_fcf_record, 2293 addr_mode, vlan_id, BOOT_ENABLE); 2294 spin_unlock_irq(&phba->hbalock); 2295 goto read_next_fcf; 2296 } 2297 /* 2298 * If the driver FCF record has boot flag set and the 2299 * new hba FCF record does not have boot flag, read 2300 * the next FCF record. 2301 */ 2302 if (!boot_flag && (fcf_rec->flag & BOOT_ENABLE)) { 2303 spin_unlock_irq(&phba->hbalock); 2304 goto read_next_fcf; 2305 } 2306 /* 2307 * If the new hba FCF record has lower priority value 2308 * than the driver FCF record, use the new record. 2309 */ 2310 if (new_fcf_record->fip_priority < fcf_rec->priority) { 2311 /* Choose the new FCF record with lower priority */ 2312 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2313 "2838 Update current FCF record " 2314 "(x%x) with new FCF record (x%x)\n", 2315 fcf_rec->fcf_indx, 2316 bf_get(lpfc_fcf_record_fcf_index, 2317 new_fcf_record)); 2318 __lpfc_update_fcf_record(phba, fcf_rec, new_fcf_record, 2319 addr_mode, vlan_id, 0); 2320 /* Reset running random FCF selection count */ 2321 phba->fcf.eligible_fcf_cnt = 1; 2322 } else if (new_fcf_record->fip_priority == fcf_rec->priority) { 2323 /* Update running random FCF selection count */ 2324 phba->fcf.eligible_fcf_cnt++; 2325 select_new_fcf = lpfc_sli4_new_fcf_random_select(phba, 2326 phba->fcf.eligible_fcf_cnt); 2327 if (select_new_fcf) { 2328 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2329 "2839 Update current FCF record " 2330 "(x%x) with new FCF record (x%x)\n", 2331 fcf_rec->fcf_indx, 2332 bf_get(lpfc_fcf_record_fcf_index, 2333 new_fcf_record)); 2334 /* Choose the new FCF by random selection */ 2335 __lpfc_update_fcf_record(phba, fcf_rec, 2336 new_fcf_record, 2337 addr_mode, vlan_id, 0); 2338 } 2339 } 2340 spin_unlock_irq(&phba->hbalock); 2341 goto read_next_fcf; 2342 } 2343 /* 2344 * This is the first suitable FCF record, choose this record for 2345 * initial best-fit FCF. 2346 */ 2347 if (fcf_rec) { 2348 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2349 "2840 Update initial FCF candidate " 2350 "with FCF (x%x)\n", 2351 bf_get(lpfc_fcf_record_fcf_index, 2352 new_fcf_record)); 2353 __lpfc_update_fcf_record(phba, fcf_rec, new_fcf_record, 2354 addr_mode, vlan_id, (boot_flag ? 2355 BOOT_ENABLE : 0)); 2356 phba->fcf.fcf_flag |= FCF_AVAILABLE; 2357 /* Setup initial running random FCF selection count */ 2358 phba->fcf.eligible_fcf_cnt = 1; 2359 /* Seeding the random number generator for random selection */ 2360 seed = (uint32_t)(0xFFFFFFFF & jiffies); 2361 srandom32(seed); 2362 } 2363 spin_unlock_irq(&phba->hbalock); 2364 goto read_next_fcf; 2365 2366 read_next_fcf: 2367 lpfc_sli4_mbox_cmd_free(phba, mboxq); 2368 if (next_fcf_index == LPFC_FCOE_FCF_NEXT_NONE || next_fcf_index == 0) { 2369 if (phba->fcf.fcf_flag & FCF_REDISC_FOV) { 2370 /* 2371 * Case of FCF fast failover scan 2372 */ 2373 2374 /* 2375 * It has not found any suitable FCF record, cancel 2376 * FCF scan inprogress, and do nothing 2377 */ 2378 if (!(phba->fcf.failover_rec.flag & RECORD_VALID)) { 2379 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP, 2380 "2782 No suitable FCF found: " 2381 "(x%x/x%x)\n", 2382 phba->fcoe_eventtag_at_fcf_scan, 2383 bf_get(lpfc_fcf_record_fcf_index, 2384 new_fcf_record)); 2385 spin_lock_irq(&phba->hbalock); 2386 if (phba->hba_flag & HBA_DEVLOSS_TMO) { 2387 phba->hba_flag &= ~FCF_TS_INPROG; 2388 spin_unlock_irq(&phba->hbalock); 2389 /* Unregister in-use FCF and rescan */ 2390 lpfc_printf_log(phba, KERN_INFO, 2391 LOG_FIP, 2392 "2864 On devloss tmo " 2393 "unreg in-use FCF and " 2394 "rescan FCF table\n"); 2395 lpfc_unregister_fcf_rescan(phba); 2396 return; 2397 } 2398 /* 2399 * Let next new FCF event trigger fast failover 2400 */ 2401 phba->hba_flag &= ~FCF_TS_INPROG; 2402 spin_unlock_irq(&phba->hbalock); 2403 return; 2404 } 2405 /* 2406 * It has found a suitable FCF record that is not 2407 * the same as in-use FCF record, unregister the 2408 * in-use FCF record, replace the in-use FCF record 2409 * with the new FCF record, mark FCF fast failover 2410 * completed, and then start register the new FCF 2411 * record. 2412 */ 2413 2414 /* Unregister the current in-use FCF record */ 2415 lpfc_unregister_fcf(phba); 2416 2417 /* Replace in-use record with the new record */ 2418 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2419 "2842 Replace in-use FCF (x%x) " 2420 "with failover FCF (x%x)\n", 2421 phba->fcf.current_rec.fcf_indx, 2422 phba->fcf.failover_rec.fcf_indx); 2423 memcpy(&phba->fcf.current_rec, 2424 &phba->fcf.failover_rec, 2425 sizeof(struct lpfc_fcf_rec)); 2426 /* 2427 * Mark the fast FCF failover rediscovery completed 2428 * and the start of the first round of the roundrobin 2429 * FCF failover. 2430 */ 2431 spin_lock_irq(&phba->hbalock); 2432 phba->fcf.fcf_flag &= ~FCF_REDISC_FOV; 2433 spin_unlock_irq(&phba->hbalock); 2434 /* Register to the new FCF record */ 2435 lpfc_register_fcf(phba); 2436 } else { 2437 /* 2438 * In case of transaction period to fast FCF failover, 2439 * do nothing when search to the end of the FCF table. 2440 */ 2441 if ((phba->fcf.fcf_flag & FCF_REDISC_EVT) || 2442 (phba->fcf.fcf_flag & FCF_REDISC_PEND)) 2443 return; 2444 2445 if (phba->cfg_fcf_failover_policy == LPFC_FCF_FOV && 2446 phba->fcf.fcf_flag & FCF_IN_USE) { 2447 /* 2448 * In case the current in-use FCF record no 2449 * longer existed during FCF discovery that 2450 * was not triggered by fast FCF failover 2451 * process, treat it as fast FCF failover. 2452 */ 2453 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2454 "2841 In-use FCF record (x%x) " 2455 "not reported, entering fast " 2456 "FCF failover mode scanning.\n", 2457 phba->fcf.current_rec.fcf_indx); 2458 spin_lock_irq(&phba->hbalock); 2459 phba->fcf.fcf_flag |= FCF_REDISC_FOV; 2460 spin_unlock_irq(&phba->hbalock); 2461 lpfc_sli4_fcf_scan_read_fcf_rec(phba, 2462 LPFC_FCOE_FCF_GET_FIRST); 2463 return; 2464 } 2465 /* Register to the new FCF record */ 2466 lpfc_register_fcf(phba); 2467 } 2468 } else 2469 lpfc_sli4_fcf_scan_read_fcf_rec(phba, next_fcf_index); 2470 return; 2471 2472 out: 2473 lpfc_sli4_mbox_cmd_free(phba, mboxq); 2474 lpfc_register_fcf(phba); 2475 2476 return; 2477 } 2478 2479 /** 2480 * lpfc_mbx_cmpl_fcf_rr_read_fcf_rec - fcf roundrobin read_fcf mbox cmpl hdler 2481 * @phba: pointer to lpfc hba data structure. 2482 * @mboxq: pointer to mailbox object. 2483 * 2484 * This is the callback function for FLOGI failure roundrobin FCF failover 2485 * read FCF record mailbox command from the eligible FCF record bmask for 2486 * performing the failover. If the FCF read back is not valid/available, it 2487 * fails through to retrying FLOGI to the currently registered FCF again. 2488 * Otherwise, if the FCF read back is valid and available, it will set the 2489 * newly read FCF record to the failover FCF record, unregister currently 2490 * registered FCF record, copy the failover FCF record to the current 2491 * FCF record, and then register the current FCF record before proceeding 2492 * to trying FLOGI on the new failover FCF. 2493 */ 2494 void 2495 lpfc_mbx_cmpl_fcf_rr_read_fcf_rec(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq) 2496 { 2497 struct fcf_record *new_fcf_record; 2498 uint32_t boot_flag, addr_mode; 2499 uint16_t next_fcf_index, fcf_index; 2500 uint16_t current_fcf_index; 2501 uint16_t vlan_id; 2502 int rc; 2503 2504 /* If link state is not up, stop the roundrobin failover process */ 2505 if (phba->link_state < LPFC_LINK_UP) { 2506 spin_lock_irq(&phba->hbalock); 2507 phba->fcf.fcf_flag &= ~FCF_DISCOVERY; 2508 phba->hba_flag &= ~FCF_RR_INPROG; 2509 spin_unlock_irq(&phba->hbalock); 2510 goto out; 2511 } 2512 2513 /* Parse the FCF record from the non-embedded mailbox command */ 2514 new_fcf_record = lpfc_sli4_fcf_rec_mbox_parse(phba, mboxq, 2515 &next_fcf_index); 2516 if (!new_fcf_record) { 2517 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP, 2518 "2766 Mailbox command READ_FCF_RECORD " 2519 "failed to retrieve a FCF record.\n"); 2520 goto error_out; 2521 } 2522 2523 /* Get the needed parameters from FCF record */ 2524 rc = lpfc_match_fcf_conn_list(phba, new_fcf_record, &boot_flag, 2525 &addr_mode, &vlan_id); 2526 2527 /* Log the FCF record information if turned on */ 2528 lpfc_sli4_log_fcf_record_info(phba, new_fcf_record, vlan_id, 2529 next_fcf_index); 2530 2531 fcf_index = bf_get(lpfc_fcf_record_fcf_index, new_fcf_record); 2532 if (!rc) { 2533 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2534 "2848 Remove ineligible FCF (x%x) from " 2535 "from roundrobin bmask\n", fcf_index); 2536 /* Clear roundrobin bmask bit for ineligible FCF */ 2537 lpfc_sli4_fcf_rr_index_clear(phba, fcf_index); 2538 /* Perform next round of roundrobin FCF failover */ 2539 fcf_index = lpfc_sli4_fcf_rr_next_index_get(phba); 2540 rc = lpfc_sli4_fcf_rr_next_proc(phba->pport, fcf_index); 2541 if (rc) 2542 goto out; 2543 goto error_out; 2544 } 2545 2546 if (fcf_index == phba->fcf.current_rec.fcf_indx) { 2547 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2548 "2760 Perform FLOGI roundrobin FCF failover: " 2549 "FCF (x%x) back to FCF (x%x)\n", 2550 phba->fcf.current_rec.fcf_indx, fcf_index); 2551 /* Wait 500 ms before retrying FLOGI to current FCF */ 2552 msleep(500); 2553 lpfc_issue_init_vfi(phba->pport); 2554 goto out; 2555 } 2556 2557 /* Upload new FCF record to the failover FCF record */ 2558 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2559 "2834 Update current FCF (x%x) with new FCF (x%x)\n", 2560 phba->fcf.failover_rec.fcf_indx, fcf_index); 2561 spin_lock_irq(&phba->hbalock); 2562 __lpfc_update_fcf_record(phba, &phba->fcf.failover_rec, 2563 new_fcf_record, addr_mode, vlan_id, 2564 (boot_flag ? BOOT_ENABLE : 0)); 2565 spin_unlock_irq(&phba->hbalock); 2566 2567 current_fcf_index = phba->fcf.current_rec.fcf_indx; 2568 2569 /* Unregister the current in-use FCF record */ 2570 lpfc_unregister_fcf(phba); 2571 2572 /* Replace in-use record with the new record */ 2573 memcpy(&phba->fcf.current_rec, &phba->fcf.failover_rec, 2574 sizeof(struct lpfc_fcf_rec)); 2575 2576 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2577 "2783 Perform FLOGI roundrobin FCF failover: FCF " 2578 "(x%x) to FCF (x%x)\n", current_fcf_index, fcf_index); 2579 2580 error_out: 2581 lpfc_register_fcf(phba); 2582 out: 2583 lpfc_sli4_mbox_cmd_free(phba, mboxq); 2584 } 2585 2586 /** 2587 * lpfc_mbx_cmpl_read_fcf_rec - read fcf completion handler. 2588 * @phba: pointer to lpfc hba data structure. 2589 * @mboxq: pointer to mailbox object. 2590 * 2591 * This is the callback function of read FCF record mailbox command for 2592 * updating the eligible FCF bmask for FLOGI failure roundrobin FCF 2593 * failover when a new FCF event happened. If the FCF read back is 2594 * valid/available and it passes the connection list check, it updates 2595 * the bmask for the eligible FCF record for roundrobin failover. 2596 */ 2597 void 2598 lpfc_mbx_cmpl_read_fcf_rec(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq) 2599 { 2600 struct fcf_record *new_fcf_record; 2601 uint32_t boot_flag, addr_mode; 2602 uint16_t fcf_index, next_fcf_index; 2603 uint16_t vlan_id; 2604 int rc; 2605 2606 /* If link state is not up, no need to proceed */ 2607 if (phba->link_state < LPFC_LINK_UP) 2608 goto out; 2609 2610 /* If FCF discovery period is over, no need to proceed */ 2611 if (!(phba->fcf.fcf_flag & FCF_DISCOVERY)) 2612 goto out; 2613 2614 /* Parse the FCF record from the non-embedded mailbox command */ 2615 new_fcf_record = lpfc_sli4_fcf_rec_mbox_parse(phba, mboxq, 2616 &next_fcf_index); 2617 if (!new_fcf_record) { 2618 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2619 "2767 Mailbox command READ_FCF_RECORD " 2620 "failed to retrieve a FCF record.\n"); 2621 goto out; 2622 } 2623 2624 /* Check the connection list for eligibility */ 2625 rc = lpfc_match_fcf_conn_list(phba, new_fcf_record, &boot_flag, 2626 &addr_mode, &vlan_id); 2627 2628 /* Log the FCF record information if turned on */ 2629 lpfc_sli4_log_fcf_record_info(phba, new_fcf_record, vlan_id, 2630 next_fcf_index); 2631 2632 if (!rc) 2633 goto out; 2634 2635 /* Update the eligible FCF record index bmask */ 2636 fcf_index = bf_get(lpfc_fcf_record_fcf_index, new_fcf_record); 2637 2638 rc = lpfc_sli4_fcf_pri_list_add(phba, fcf_index, new_fcf_record); 2639 2640 out: 2641 lpfc_sli4_mbox_cmd_free(phba, mboxq); 2642 } 2643 2644 /** 2645 * lpfc_init_vfi_cmpl - Completion handler for init_vfi mbox command. 2646 * @phba: pointer to lpfc hba data structure. 2647 * @mboxq: pointer to mailbox data structure. 2648 * 2649 * This function handles completion of init vfi mailbox command. 2650 */ 2651 void 2652 lpfc_init_vfi_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq) 2653 { 2654 struct lpfc_vport *vport = mboxq->vport; 2655 2656 /* 2657 * VFI not supported on interface type 0, just do the flogi 2658 * Also continue if the VFI is in use - just use the same one. 2659 */ 2660 if (mboxq->u.mb.mbxStatus && 2661 (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) != 2662 LPFC_SLI_INTF_IF_TYPE_0) && 2663 mboxq->u.mb.mbxStatus != MBX_VFI_IN_USE) { 2664 lpfc_printf_vlog(vport, KERN_ERR, 2665 LOG_MBOX, 2666 "2891 Init VFI mailbox failed 0x%x\n", 2667 mboxq->u.mb.mbxStatus); 2668 mempool_free(mboxq, phba->mbox_mem_pool); 2669 lpfc_vport_set_state(vport, FC_VPORT_FAILED); 2670 return; 2671 } 2672 2673 lpfc_initial_flogi(vport); 2674 mempool_free(mboxq, phba->mbox_mem_pool); 2675 return; 2676 } 2677 2678 /** 2679 * lpfc_issue_init_vfi - Issue init_vfi mailbox command. 2680 * @vport: pointer to lpfc_vport data structure. 2681 * 2682 * This function issue a init_vfi mailbox command to initialize the VFI and 2683 * VPI for the physical port. 2684 */ 2685 void 2686 lpfc_issue_init_vfi(struct lpfc_vport *vport) 2687 { 2688 LPFC_MBOXQ_t *mboxq; 2689 int rc; 2690 struct lpfc_hba *phba = vport->phba; 2691 2692 mboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 2693 if (!mboxq) { 2694 lpfc_printf_vlog(vport, KERN_ERR, 2695 LOG_MBOX, "2892 Failed to allocate " 2696 "init_vfi mailbox\n"); 2697 return; 2698 } 2699 lpfc_init_vfi(mboxq, vport); 2700 mboxq->mbox_cmpl = lpfc_init_vfi_cmpl; 2701 rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_NOWAIT); 2702 if (rc == MBX_NOT_FINISHED) { 2703 lpfc_printf_vlog(vport, KERN_ERR, 2704 LOG_MBOX, "2893 Failed to issue init_vfi mailbox\n"); 2705 mempool_free(mboxq, vport->phba->mbox_mem_pool); 2706 } 2707 } 2708 2709 /** 2710 * lpfc_init_vpi_cmpl - Completion handler for init_vpi mbox command. 2711 * @phba: pointer to lpfc hba data structure. 2712 * @mboxq: pointer to mailbox data structure. 2713 * 2714 * This function handles completion of init vpi mailbox command. 2715 */ 2716 void 2717 lpfc_init_vpi_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq) 2718 { 2719 struct lpfc_vport *vport = mboxq->vport; 2720 struct lpfc_nodelist *ndlp; 2721 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 2722 2723 if (mboxq->u.mb.mbxStatus) { 2724 lpfc_printf_vlog(vport, KERN_ERR, 2725 LOG_MBOX, 2726 "2609 Init VPI mailbox failed 0x%x\n", 2727 mboxq->u.mb.mbxStatus); 2728 mempool_free(mboxq, phba->mbox_mem_pool); 2729 lpfc_vport_set_state(vport, FC_VPORT_FAILED); 2730 return; 2731 } 2732 spin_lock_irq(shost->host_lock); 2733 vport->fc_flag &= ~FC_VPORT_NEEDS_INIT_VPI; 2734 spin_unlock_irq(shost->host_lock); 2735 2736 /* If this port is physical port or FDISC is done, do reg_vpi */ 2737 if ((phba->pport == vport) || (vport->port_state == LPFC_FDISC)) { 2738 ndlp = lpfc_findnode_did(vport, Fabric_DID); 2739 if (!ndlp) 2740 lpfc_printf_vlog(vport, KERN_ERR, 2741 LOG_DISCOVERY, 2742 "2731 Cannot find fabric " 2743 "controller node\n"); 2744 else 2745 lpfc_register_new_vport(phba, vport, ndlp); 2746 mempool_free(mboxq, phba->mbox_mem_pool); 2747 return; 2748 } 2749 2750 if (phba->link_flag & LS_NPIV_FAB_SUPPORTED) 2751 lpfc_initial_fdisc(vport); 2752 else { 2753 lpfc_vport_set_state(vport, FC_VPORT_NO_FABRIC_SUPP); 2754 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS, 2755 "2606 No NPIV Fabric support\n"); 2756 } 2757 mempool_free(mboxq, phba->mbox_mem_pool); 2758 return; 2759 } 2760 2761 /** 2762 * lpfc_issue_init_vpi - Issue init_vpi mailbox command. 2763 * @vport: pointer to lpfc_vport data structure. 2764 * 2765 * This function issue a init_vpi mailbox command to initialize 2766 * VPI for the vport. 2767 */ 2768 void 2769 lpfc_issue_init_vpi(struct lpfc_vport *vport) 2770 { 2771 LPFC_MBOXQ_t *mboxq; 2772 int rc; 2773 2774 mboxq = mempool_alloc(vport->phba->mbox_mem_pool, GFP_KERNEL); 2775 if (!mboxq) { 2776 lpfc_printf_vlog(vport, KERN_ERR, 2777 LOG_MBOX, "2607 Failed to allocate " 2778 "init_vpi mailbox\n"); 2779 return; 2780 } 2781 lpfc_init_vpi(vport->phba, mboxq, vport->vpi); 2782 mboxq->vport = vport; 2783 mboxq->mbox_cmpl = lpfc_init_vpi_cmpl; 2784 rc = lpfc_sli_issue_mbox(vport->phba, mboxq, MBX_NOWAIT); 2785 if (rc == MBX_NOT_FINISHED) { 2786 lpfc_printf_vlog(vport, KERN_ERR, 2787 LOG_MBOX, "2608 Failed to issue init_vpi mailbox\n"); 2788 mempool_free(mboxq, vport->phba->mbox_mem_pool); 2789 } 2790 } 2791 2792 /** 2793 * lpfc_start_fdiscs - send fdiscs for each vports on this port. 2794 * @phba: pointer to lpfc hba data structure. 2795 * 2796 * This function loops through the list of vports on the @phba and issues an 2797 * FDISC if possible. 2798 */ 2799 void 2800 lpfc_start_fdiscs(struct lpfc_hba *phba) 2801 { 2802 struct lpfc_vport **vports; 2803 int i; 2804 2805 vports = lpfc_create_vport_work_array(phba); 2806 if (vports != NULL) { 2807 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) { 2808 if (vports[i]->port_type == LPFC_PHYSICAL_PORT) 2809 continue; 2810 /* There are no vpi for this vport */ 2811 if (vports[i]->vpi > phba->max_vpi) { 2812 lpfc_vport_set_state(vports[i], 2813 FC_VPORT_FAILED); 2814 continue; 2815 } 2816 if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) { 2817 lpfc_vport_set_state(vports[i], 2818 FC_VPORT_LINKDOWN); 2819 continue; 2820 } 2821 if (vports[i]->fc_flag & FC_VPORT_NEEDS_INIT_VPI) { 2822 lpfc_issue_init_vpi(vports[i]); 2823 continue; 2824 } 2825 if (phba->link_flag & LS_NPIV_FAB_SUPPORTED) 2826 lpfc_initial_fdisc(vports[i]); 2827 else { 2828 lpfc_vport_set_state(vports[i], 2829 FC_VPORT_NO_FABRIC_SUPP); 2830 lpfc_printf_vlog(vports[i], KERN_ERR, 2831 LOG_ELS, 2832 "0259 No NPIV " 2833 "Fabric support\n"); 2834 } 2835 } 2836 } 2837 lpfc_destroy_vport_work_array(phba, vports); 2838 } 2839 2840 void 2841 lpfc_mbx_cmpl_reg_vfi(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq) 2842 { 2843 struct lpfc_dmabuf *dmabuf = mboxq->context1; 2844 struct lpfc_vport *vport = mboxq->vport; 2845 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 2846 2847 /* 2848 * VFI not supported for interface type 0, so ignore any mailbox 2849 * error (except VFI in use) and continue with the discovery. 2850 */ 2851 if (mboxq->u.mb.mbxStatus && 2852 (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) != 2853 LPFC_SLI_INTF_IF_TYPE_0) && 2854 mboxq->u.mb.mbxStatus != MBX_VFI_IN_USE) { 2855 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX, 2856 "2018 REG_VFI mbxStatus error x%x " 2857 "HBA state x%x\n", 2858 mboxq->u.mb.mbxStatus, vport->port_state); 2859 if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) { 2860 /* FLOGI failed, use loop map to make discovery list */ 2861 lpfc_disc_list_loopmap(vport); 2862 /* Start discovery */ 2863 lpfc_disc_start(vport); 2864 goto out_free_mem; 2865 } 2866 lpfc_vport_set_state(vport, FC_VPORT_FAILED); 2867 goto out_free_mem; 2868 } 2869 /* The VPI is implicitly registered when the VFI is registered */ 2870 spin_lock_irq(shost->host_lock); 2871 vport->vpi_state |= LPFC_VPI_REGISTERED; 2872 vport->fc_flag |= FC_VFI_REGISTERED; 2873 vport->fc_flag &= ~FC_VPORT_NEEDS_REG_VPI; 2874 vport->fc_flag &= ~FC_VPORT_NEEDS_INIT_VPI; 2875 spin_unlock_irq(shost->host_lock); 2876 2877 /* In case SLI4 FC loopback test, we are ready */ 2878 if ((phba->sli_rev == LPFC_SLI_REV4) && 2879 (phba->link_flag & LS_LOOPBACK_MODE)) { 2880 phba->link_state = LPFC_HBA_READY; 2881 goto out_free_mem; 2882 } 2883 2884 if (vport->port_state == LPFC_FABRIC_CFG_LINK) { 2885 /* 2886 * For private loop or for NPort pt2pt, 2887 * just start discovery and we are done. 2888 */ 2889 if ((vport->fc_flag & FC_PT2PT) || 2890 ((phba->fc_topology == LPFC_TOPOLOGY_LOOP) && 2891 !(vport->fc_flag & FC_PUBLIC_LOOP))) { 2892 2893 /* Use loop map to make discovery list */ 2894 lpfc_disc_list_loopmap(vport); 2895 /* Start discovery */ 2896 lpfc_disc_start(vport); 2897 } else { 2898 lpfc_start_fdiscs(phba); 2899 lpfc_do_scr_ns_plogi(phba, vport); 2900 } 2901 } 2902 2903 out_free_mem: 2904 mempool_free(mboxq, phba->mbox_mem_pool); 2905 lpfc_mbuf_free(phba, dmabuf->virt, dmabuf->phys); 2906 kfree(dmabuf); 2907 return; 2908 } 2909 2910 static void 2911 lpfc_mbx_cmpl_read_sparam(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 2912 { 2913 MAILBOX_t *mb = &pmb->u.mb; 2914 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) pmb->context1; 2915 struct lpfc_vport *vport = pmb->vport; 2916 2917 2918 /* Check for error */ 2919 if (mb->mbxStatus) { 2920 /* READ_SPARAM mbox error <mbxStatus> state <hba_state> */ 2921 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX, 2922 "0319 READ_SPARAM mbxStatus error x%x " 2923 "hba state x%x>\n", 2924 mb->mbxStatus, vport->port_state); 2925 lpfc_linkdown(phba); 2926 goto out; 2927 } 2928 2929 memcpy((uint8_t *) &vport->fc_sparam, (uint8_t *) mp->virt, 2930 sizeof (struct serv_parm)); 2931 lpfc_update_vport_wwn(vport); 2932 if (vport->port_type == LPFC_PHYSICAL_PORT) { 2933 memcpy(&phba->wwnn, &vport->fc_nodename, sizeof(phba->wwnn)); 2934 memcpy(&phba->wwpn, &vport->fc_portname, sizeof(phba->wwnn)); 2935 } 2936 2937 lpfc_mbuf_free(phba, mp->virt, mp->phys); 2938 kfree(mp); 2939 mempool_free(pmb, phba->mbox_mem_pool); 2940 return; 2941 2942 out: 2943 pmb->context1 = NULL; 2944 lpfc_mbuf_free(phba, mp->virt, mp->phys); 2945 kfree(mp); 2946 lpfc_issue_clear_la(phba, vport); 2947 mempool_free(pmb, phba->mbox_mem_pool); 2948 return; 2949 } 2950 2951 static void 2952 lpfc_mbx_process_link_up(struct lpfc_hba *phba, struct lpfc_mbx_read_top *la) 2953 { 2954 struct lpfc_vport *vport = phba->pport; 2955 LPFC_MBOXQ_t *sparam_mbox, *cfglink_mbox = NULL; 2956 struct Scsi_Host *shost; 2957 int i; 2958 struct lpfc_dmabuf *mp; 2959 int rc; 2960 struct fcf_record *fcf_record; 2961 2962 spin_lock_irq(&phba->hbalock); 2963 switch (bf_get(lpfc_mbx_read_top_link_spd, la)) { 2964 case LPFC_LINK_SPEED_1GHZ: 2965 case LPFC_LINK_SPEED_2GHZ: 2966 case LPFC_LINK_SPEED_4GHZ: 2967 case LPFC_LINK_SPEED_8GHZ: 2968 case LPFC_LINK_SPEED_10GHZ: 2969 case LPFC_LINK_SPEED_16GHZ: 2970 phba->fc_linkspeed = bf_get(lpfc_mbx_read_top_link_spd, la); 2971 break; 2972 default: 2973 phba->fc_linkspeed = LPFC_LINK_SPEED_UNKNOWN; 2974 break; 2975 } 2976 2977 phba->fc_topology = bf_get(lpfc_mbx_read_top_topology, la); 2978 phba->link_flag &= ~LS_NPIV_FAB_SUPPORTED; 2979 2980 shost = lpfc_shost_from_vport(vport); 2981 if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) { 2982 phba->sli3_options &= ~LPFC_SLI3_NPIV_ENABLED; 2983 2984 /* if npiv is enabled and this adapter supports npiv log 2985 * a message that npiv is not supported in this topology 2986 */ 2987 if (phba->cfg_enable_npiv && phba->max_vpi) 2988 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT, 2989 "1309 Link Up Event npiv not supported in loop " 2990 "topology\n"); 2991 /* Get Loop Map information */ 2992 if (bf_get(lpfc_mbx_read_top_il, la)) { 2993 spin_lock(shost->host_lock); 2994 vport->fc_flag |= FC_LBIT; 2995 spin_unlock(shost->host_lock); 2996 } 2997 2998 vport->fc_myDID = bf_get(lpfc_mbx_read_top_alpa_granted, la); 2999 i = la->lilpBde64.tus.f.bdeSize; 3000 3001 if (i == 0) { 3002 phba->alpa_map[0] = 0; 3003 } else { 3004 if (vport->cfg_log_verbose & LOG_LINK_EVENT) { 3005 int numalpa, j, k; 3006 union { 3007 uint8_t pamap[16]; 3008 struct { 3009 uint32_t wd1; 3010 uint32_t wd2; 3011 uint32_t wd3; 3012 uint32_t wd4; 3013 } pa; 3014 } un; 3015 numalpa = phba->alpa_map[0]; 3016 j = 0; 3017 while (j < numalpa) { 3018 memset(un.pamap, 0, 16); 3019 for (k = 1; j < numalpa; k++) { 3020 un.pamap[k - 1] = 3021 phba->alpa_map[j + 1]; 3022 j++; 3023 if (k == 16) 3024 break; 3025 } 3026 /* Link Up Event ALPA map */ 3027 lpfc_printf_log(phba, 3028 KERN_WARNING, 3029 LOG_LINK_EVENT, 3030 "1304 Link Up Event " 3031 "ALPA map Data: x%x " 3032 "x%x x%x x%x\n", 3033 un.pa.wd1, un.pa.wd2, 3034 un.pa.wd3, un.pa.wd4); 3035 } 3036 } 3037 } 3038 } else { 3039 if (!(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)) { 3040 if (phba->max_vpi && phba->cfg_enable_npiv && 3041 (phba->sli_rev >= LPFC_SLI_REV3)) 3042 phba->sli3_options |= LPFC_SLI3_NPIV_ENABLED; 3043 } 3044 vport->fc_myDID = phba->fc_pref_DID; 3045 spin_lock(shost->host_lock); 3046 vport->fc_flag |= FC_LBIT; 3047 spin_unlock(shost->host_lock); 3048 } 3049 spin_unlock_irq(&phba->hbalock); 3050 3051 lpfc_linkup(phba); 3052 sparam_mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 3053 if (!sparam_mbox) 3054 goto out; 3055 3056 rc = lpfc_read_sparam(phba, sparam_mbox, 0); 3057 if (rc) { 3058 mempool_free(sparam_mbox, phba->mbox_mem_pool); 3059 goto out; 3060 } 3061 sparam_mbox->vport = vport; 3062 sparam_mbox->mbox_cmpl = lpfc_mbx_cmpl_read_sparam; 3063 rc = lpfc_sli_issue_mbox(phba, sparam_mbox, MBX_NOWAIT); 3064 if (rc == MBX_NOT_FINISHED) { 3065 mp = (struct lpfc_dmabuf *) sparam_mbox->context1; 3066 lpfc_mbuf_free(phba, mp->virt, mp->phys); 3067 kfree(mp); 3068 mempool_free(sparam_mbox, phba->mbox_mem_pool); 3069 goto out; 3070 } 3071 3072 if (!(phba->hba_flag & HBA_FCOE_MODE)) { 3073 cfglink_mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 3074 if (!cfglink_mbox) 3075 goto out; 3076 vport->port_state = LPFC_LOCAL_CFG_LINK; 3077 lpfc_config_link(phba, cfglink_mbox); 3078 cfglink_mbox->vport = vport; 3079 cfglink_mbox->mbox_cmpl = lpfc_mbx_cmpl_local_config_link; 3080 rc = lpfc_sli_issue_mbox(phba, cfglink_mbox, MBX_NOWAIT); 3081 if (rc == MBX_NOT_FINISHED) { 3082 mempool_free(cfglink_mbox, phba->mbox_mem_pool); 3083 goto out; 3084 } 3085 } else { 3086 vport->port_state = LPFC_VPORT_UNKNOWN; 3087 /* 3088 * Add the driver's default FCF record at FCF index 0 now. This 3089 * is phase 1 implementation that support FCF index 0 and driver 3090 * defaults. 3091 */ 3092 if (!(phba->hba_flag & HBA_FIP_SUPPORT)) { 3093 fcf_record = kzalloc(sizeof(struct fcf_record), 3094 GFP_KERNEL); 3095 if (unlikely(!fcf_record)) { 3096 lpfc_printf_log(phba, KERN_ERR, 3097 LOG_MBOX | LOG_SLI, 3098 "2554 Could not allocate memory for " 3099 "fcf record\n"); 3100 rc = -ENODEV; 3101 goto out; 3102 } 3103 3104 lpfc_sli4_build_dflt_fcf_record(phba, fcf_record, 3105 LPFC_FCOE_FCF_DEF_INDEX); 3106 rc = lpfc_sli4_add_fcf_record(phba, fcf_record); 3107 if (unlikely(rc)) { 3108 lpfc_printf_log(phba, KERN_ERR, 3109 LOG_MBOX | LOG_SLI, 3110 "2013 Could not manually add FCF " 3111 "record 0, status %d\n", rc); 3112 rc = -ENODEV; 3113 kfree(fcf_record); 3114 goto out; 3115 } 3116 kfree(fcf_record); 3117 } 3118 /* 3119 * The driver is expected to do FIP/FCF. Call the port 3120 * and get the FCF Table. 3121 */ 3122 spin_lock_irq(&phba->hbalock); 3123 if (phba->hba_flag & FCF_TS_INPROG) { 3124 spin_unlock_irq(&phba->hbalock); 3125 return; 3126 } 3127 /* This is the initial FCF discovery scan */ 3128 phba->fcf.fcf_flag |= FCF_INIT_DISC; 3129 spin_unlock_irq(&phba->hbalock); 3130 lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY, 3131 "2778 Start FCF table scan at linkup\n"); 3132 rc = lpfc_sli4_fcf_scan_read_fcf_rec(phba, 3133 LPFC_FCOE_FCF_GET_FIRST); 3134 if (rc) { 3135 spin_lock_irq(&phba->hbalock); 3136 phba->fcf.fcf_flag &= ~FCF_INIT_DISC; 3137 spin_unlock_irq(&phba->hbalock); 3138 goto out; 3139 } 3140 /* Reset FCF roundrobin bmask for new discovery */ 3141 lpfc_sli4_clear_fcf_rr_bmask(phba); 3142 } 3143 3144 return; 3145 out: 3146 lpfc_vport_set_state(vport, FC_VPORT_FAILED); 3147 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX, 3148 "0263 Discovery Mailbox error: state: 0x%x : %p %p\n", 3149 vport->port_state, sparam_mbox, cfglink_mbox); 3150 lpfc_issue_clear_la(phba, vport); 3151 return; 3152 } 3153 3154 static void 3155 lpfc_enable_la(struct lpfc_hba *phba) 3156 { 3157 uint32_t control; 3158 struct lpfc_sli *psli = &phba->sli; 3159 spin_lock_irq(&phba->hbalock); 3160 psli->sli_flag |= LPFC_PROCESS_LA; 3161 if (phba->sli_rev <= LPFC_SLI_REV3) { 3162 control = readl(phba->HCregaddr); 3163 control |= HC_LAINT_ENA; 3164 writel(control, phba->HCregaddr); 3165 readl(phba->HCregaddr); /* flush */ 3166 } 3167 spin_unlock_irq(&phba->hbalock); 3168 } 3169 3170 static void 3171 lpfc_mbx_issue_link_down(struct lpfc_hba *phba) 3172 { 3173 lpfc_linkdown(phba); 3174 lpfc_enable_la(phba); 3175 lpfc_unregister_unused_fcf(phba); 3176 /* turn on Link Attention interrupts - no CLEAR_LA needed */ 3177 } 3178 3179 3180 /* 3181 * This routine handles processing a READ_TOPOLOGY mailbox 3182 * command upon completion. It is setup in the LPFC_MBOXQ 3183 * as the completion routine when the command is 3184 * handed off to the SLI layer. 3185 */ 3186 void 3187 lpfc_mbx_cmpl_read_topology(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 3188 { 3189 struct lpfc_vport *vport = pmb->vport; 3190 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 3191 struct lpfc_mbx_read_top *la; 3192 MAILBOX_t *mb = &pmb->u.mb; 3193 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1); 3194 3195 /* Unblock ELS traffic */ 3196 phba->sli.ring[LPFC_ELS_RING].flag &= ~LPFC_STOP_IOCB_EVENT; 3197 /* Check for error */ 3198 if (mb->mbxStatus) { 3199 lpfc_printf_log(phba, KERN_INFO, LOG_LINK_EVENT, 3200 "1307 READ_LA mbox error x%x state x%x\n", 3201 mb->mbxStatus, vport->port_state); 3202 lpfc_mbx_issue_link_down(phba); 3203 phba->link_state = LPFC_HBA_ERROR; 3204 goto lpfc_mbx_cmpl_read_topology_free_mbuf; 3205 } 3206 3207 la = (struct lpfc_mbx_read_top *) &pmb->u.mb.un.varReadTop; 3208 3209 memcpy(&phba->alpa_map[0], mp->virt, 128); 3210 3211 spin_lock_irq(shost->host_lock); 3212 if (bf_get(lpfc_mbx_read_top_pb, la)) 3213 vport->fc_flag |= FC_BYPASSED_MODE; 3214 else 3215 vport->fc_flag &= ~FC_BYPASSED_MODE; 3216 spin_unlock_irq(shost->host_lock); 3217 3218 if ((phba->fc_eventTag < la->eventTag) || 3219 (phba->fc_eventTag == la->eventTag)) { 3220 phba->fc_stat.LinkMultiEvent++; 3221 if (bf_get(lpfc_mbx_read_top_att_type, la) == LPFC_ATT_LINK_UP) 3222 if (phba->fc_eventTag != 0) 3223 lpfc_linkdown(phba); 3224 } 3225 3226 phba->fc_eventTag = la->eventTag; 3227 spin_lock_irq(&phba->hbalock); 3228 if (bf_get(lpfc_mbx_read_top_mm, la)) 3229 phba->sli.sli_flag |= LPFC_MENLO_MAINT; 3230 else 3231 phba->sli.sli_flag &= ~LPFC_MENLO_MAINT; 3232 spin_unlock_irq(&phba->hbalock); 3233 3234 phba->link_events++; 3235 if ((bf_get(lpfc_mbx_read_top_att_type, la) == LPFC_ATT_LINK_UP) && 3236 (!bf_get(lpfc_mbx_read_top_mm, la))) { 3237 phba->fc_stat.LinkUp++; 3238 if (phba->link_flag & LS_LOOPBACK_MODE) { 3239 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT, 3240 "1306 Link Up Event in loop back mode " 3241 "x%x received Data: x%x x%x x%x x%x\n", 3242 la->eventTag, phba->fc_eventTag, 3243 bf_get(lpfc_mbx_read_top_alpa_granted, 3244 la), 3245 bf_get(lpfc_mbx_read_top_link_spd, la), 3246 phba->alpa_map[0]); 3247 } else { 3248 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT, 3249 "1303 Link Up Event x%x received " 3250 "Data: x%x x%x x%x x%x x%x x%x %d\n", 3251 la->eventTag, phba->fc_eventTag, 3252 bf_get(lpfc_mbx_read_top_alpa_granted, 3253 la), 3254 bf_get(lpfc_mbx_read_top_link_spd, la), 3255 phba->alpa_map[0], 3256 bf_get(lpfc_mbx_read_top_mm, la), 3257 bf_get(lpfc_mbx_read_top_fa, la), 3258 phba->wait_4_mlo_maint_flg); 3259 } 3260 lpfc_mbx_process_link_up(phba, la); 3261 } else if (bf_get(lpfc_mbx_read_top_att_type, la) == 3262 LPFC_ATT_LINK_DOWN) { 3263 phba->fc_stat.LinkDown++; 3264 if (phba->link_flag & LS_LOOPBACK_MODE) 3265 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT, 3266 "1308 Link Down Event in loop back mode " 3267 "x%x received " 3268 "Data: x%x x%x x%x\n", 3269 la->eventTag, phba->fc_eventTag, 3270 phba->pport->port_state, vport->fc_flag); 3271 else 3272 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT, 3273 "1305 Link Down Event x%x received " 3274 "Data: x%x x%x x%x x%x x%x\n", 3275 la->eventTag, phba->fc_eventTag, 3276 phba->pport->port_state, vport->fc_flag, 3277 bf_get(lpfc_mbx_read_top_mm, la), 3278 bf_get(lpfc_mbx_read_top_fa, la)); 3279 lpfc_mbx_issue_link_down(phba); 3280 } 3281 if ((bf_get(lpfc_mbx_read_top_mm, la)) && 3282 (bf_get(lpfc_mbx_read_top_att_type, la) == LPFC_ATT_LINK_UP)) { 3283 if (phba->link_state != LPFC_LINK_DOWN) { 3284 phba->fc_stat.LinkDown++; 3285 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT, 3286 "1312 Link Down Event x%x received " 3287 "Data: x%x x%x x%x\n", 3288 la->eventTag, phba->fc_eventTag, 3289 phba->pport->port_state, vport->fc_flag); 3290 lpfc_mbx_issue_link_down(phba); 3291 } else 3292 lpfc_enable_la(phba); 3293 3294 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT, 3295 "1310 Menlo Maint Mode Link up Event x%x rcvd " 3296 "Data: x%x x%x x%x\n", 3297 la->eventTag, phba->fc_eventTag, 3298 phba->pport->port_state, vport->fc_flag); 3299 /* 3300 * The cmnd that triggered this will be waiting for this 3301 * signal. 3302 */ 3303 /* WAKEUP for MENLO_SET_MODE or MENLO_RESET command. */ 3304 if (phba->wait_4_mlo_maint_flg) { 3305 phba->wait_4_mlo_maint_flg = 0; 3306 wake_up_interruptible(&phba->wait_4_mlo_m_q); 3307 } 3308 } 3309 3310 if (bf_get(lpfc_mbx_read_top_fa, la)) { 3311 if (bf_get(lpfc_mbx_read_top_mm, la)) 3312 lpfc_issue_clear_la(phba, vport); 3313 lpfc_printf_log(phba, KERN_INFO, LOG_LINK_EVENT, 3314 "1311 fa %d\n", 3315 bf_get(lpfc_mbx_read_top_fa, la)); 3316 } 3317 3318 lpfc_mbx_cmpl_read_topology_free_mbuf: 3319 lpfc_mbuf_free(phba, mp->virt, mp->phys); 3320 kfree(mp); 3321 mempool_free(pmb, phba->mbox_mem_pool); 3322 return; 3323 } 3324 3325 /* 3326 * This routine handles processing a REG_LOGIN mailbox 3327 * command upon completion. It is setup in the LPFC_MBOXQ 3328 * as the completion routine when the command is 3329 * handed off to the SLI layer. 3330 */ 3331 void 3332 lpfc_mbx_cmpl_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 3333 { 3334 struct lpfc_vport *vport = pmb->vport; 3335 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1); 3336 struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) pmb->context2; 3337 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 3338 3339 pmb->context1 = NULL; 3340 pmb->context2 = NULL; 3341 3342 if (ndlp->nlp_flag & NLP_REG_LOGIN_SEND) 3343 ndlp->nlp_flag &= ~NLP_REG_LOGIN_SEND; 3344 3345 if (ndlp->nlp_flag & NLP_IGNR_REG_CMPL || 3346 ndlp->nlp_state != NLP_STE_REG_LOGIN_ISSUE) { 3347 /* We rcvd a rscn after issuing this 3348 * mbox reg login, we may have cycled 3349 * back through the state and be 3350 * back at reg login state so this 3351 * mbox needs to be ignored becase 3352 * there is another reg login in 3353 * process. 3354 */ 3355 spin_lock_irq(shost->host_lock); 3356 ndlp->nlp_flag &= ~NLP_IGNR_REG_CMPL; 3357 spin_unlock_irq(shost->host_lock); 3358 } else 3359 /* Good status, call state machine */ 3360 lpfc_disc_state_machine(vport, ndlp, pmb, 3361 NLP_EVT_CMPL_REG_LOGIN); 3362 3363 lpfc_mbuf_free(phba, mp->virt, mp->phys); 3364 kfree(mp); 3365 mempool_free(pmb, phba->mbox_mem_pool); 3366 /* decrement the node reference count held for this callback 3367 * function. 3368 */ 3369 lpfc_nlp_put(ndlp); 3370 3371 return; 3372 } 3373 3374 static void 3375 lpfc_mbx_cmpl_unreg_vpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 3376 { 3377 MAILBOX_t *mb = &pmb->u.mb; 3378 struct lpfc_vport *vport = pmb->vport; 3379 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 3380 3381 switch (mb->mbxStatus) { 3382 case 0x0011: 3383 case 0x0020: 3384 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE, 3385 "0911 cmpl_unreg_vpi, mb status = 0x%x\n", 3386 mb->mbxStatus); 3387 break; 3388 /* If VPI is busy, reset the HBA */ 3389 case 0x9700: 3390 lpfc_printf_vlog(vport, KERN_ERR, LOG_NODE, 3391 "2798 Unreg_vpi failed vpi 0x%x, mb status = 0x%x\n", 3392 vport->vpi, mb->mbxStatus); 3393 if (!(phba->pport->load_flag & FC_UNLOADING)) 3394 lpfc_workq_post_event(phba, NULL, NULL, 3395 LPFC_EVT_RESET_HBA); 3396 } 3397 spin_lock_irq(shost->host_lock); 3398 vport->vpi_state &= ~LPFC_VPI_REGISTERED; 3399 vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI; 3400 spin_unlock_irq(shost->host_lock); 3401 vport->unreg_vpi_cmpl = VPORT_OK; 3402 mempool_free(pmb, phba->mbox_mem_pool); 3403 lpfc_cleanup_vports_rrqs(vport, NULL); 3404 /* 3405 * This shost reference might have been taken at the beginning of 3406 * lpfc_vport_delete() 3407 */ 3408 if ((vport->load_flag & FC_UNLOADING) && (vport != phba->pport)) 3409 scsi_host_put(shost); 3410 } 3411 3412 int 3413 lpfc_mbx_unreg_vpi(struct lpfc_vport *vport) 3414 { 3415 struct lpfc_hba *phba = vport->phba; 3416 LPFC_MBOXQ_t *mbox; 3417 int rc; 3418 3419 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 3420 if (!mbox) 3421 return 1; 3422 3423 lpfc_unreg_vpi(phba, vport->vpi, mbox); 3424 mbox->vport = vport; 3425 mbox->mbox_cmpl = lpfc_mbx_cmpl_unreg_vpi; 3426 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT); 3427 if (rc == MBX_NOT_FINISHED) { 3428 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX | LOG_VPORT, 3429 "1800 Could not issue unreg_vpi\n"); 3430 mempool_free(mbox, phba->mbox_mem_pool); 3431 vport->unreg_vpi_cmpl = VPORT_ERROR; 3432 return rc; 3433 } 3434 return 0; 3435 } 3436 3437 static void 3438 lpfc_mbx_cmpl_reg_vpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 3439 { 3440 struct lpfc_vport *vport = pmb->vport; 3441 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 3442 MAILBOX_t *mb = &pmb->u.mb; 3443 3444 switch (mb->mbxStatus) { 3445 case 0x0011: 3446 case 0x9601: 3447 case 0x9602: 3448 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE, 3449 "0912 cmpl_reg_vpi, mb status = 0x%x\n", 3450 mb->mbxStatus); 3451 lpfc_vport_set_state(vport, FC_VPORT_FAILED); 3452 spin_lock_irq(shost->host_lock); 3453 vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP); 3454 spin_unlock_irq(shost->host_lock); 3455 vport->fc_myDID = 0; 3456 goto out; 3457 } 3458 3459 spin_lock_irq(shost->host_lock); 3460 vport->vpi_state |= LPFC_VPI_REGISTERED; 3461 vport->fc_flag &= ~FC_VPORT_NEEDS_REG_VPI; 3462 spin_unlock_irq(shost->host_lock); 3463 vport->num_disc_nodes = 0; 3464 /* go thru NPR list and issue ELS PLOGIs */ 3465 if (vport->fc_npr_cnt) 3466 lpfc_els_disc_plogi(vport); 3467 3468 if (!vport->num_disc_nodes) { 3469 spin_lock_irq(shost->host_lock); 3470 vport->fc_flag &= ~FC_NDISC_ACTIVE; 3471 spin_unlock_irq(shost->host_lock); 3472 lpfc_can_disctmo(vport); 3473 } 3474 vport->port_state = LPFC_VPORT_READY; 3475 3476 out: 3477 mempool_free(pmb, phba->mbox_mem_pool); 3478 return; 3479 } 3480 3481 /** 3482 * lpfc_create_static_vport - Read HBA config region to create static vports. 3483 * @phba: pointer to lpfc hba data structure. 3484 * 3485 * This routine issue a DUMP mailbox command for config region 22 to get 3486 * the list of static vports to be created. The function create vports 3487 * based on the information returned from the HBA. 3488 **/ 3489 void 3490 lpfc_create_static_vport(struct lpfc_hba *phba) 3491 { 3492 LPFC_MBOXQ_t *pmb = NULL; 3493 MAILBOX_t *mb; 3494 struct static_vport_info *vport_info; 3495 int rc = 0, i; 3496 struct fc_vport_identifiers vport_id; 3497 struct fc_vport *new_fc_vport; 3498 struct Scsi_Host *shost; 3499 struct lpfc_vport *vport; 3500 uint16_t offset = 0; 3501 uint8_t *vport_buff; 3502 struct lpfc_dmabuf *mp; 3503 uint32_t byte_count = 0; 3504 3505 pmb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 3506 if (!pmb) { 3507 lpfc_printf_log(phba, KERN_ERR, LOG_INIT, 3508 "0542 lpfc_create_static_vport failed to" 3509 " allocate mailbox memory\n"); 3510 return; 3511 } 3512 3513 mb = &pmb->u.mb; 3514 3515 vport_info = kzalloc(sizeof(struct static_vport_info), GFP_KERNEL); 3516 if (!vport_info) { 3517 lpfc_printf_log(phba, KERN_ERR, LOG_INIT, 3518 "0543 lpfc_create_static_vport failed to" 3519 " allocate vport_info\n"); 3520 mempool_free(pmb, phba->mbox_mem_pool); 3521 return; 3522 } 3523 3524 vport_buff = (uint8_t *) vport_info; 3525 do { 3526 if (lpfc_dump_static_vport(phba, pmb, offset)) 3527 goto out; 3528 3529 pmb->vport = phba->pport; 3530 rc = lpfc_sli_issue_mbox_wait(phba, pmb, LPFC_MBOX_TMO); 3531 3532 if ((rc != MBX_SUCCESS) || mb->mbxStatus) { 3533 lpfc_printf_log(phba, KERN_WARNING, LOG_INIT, 3534 "0544 lpfc_create_static_vport failed to" 3535 " issue dump mailbox command ret 0x%x " 3536 "status 0x%x\n", 3537 rc, mb->mbxStatus); 3538 goto out; 3539 } 3540 3541 if (phba->sli_rev == LPFC_SLI_REV4) { 3542 byte_count = pmb->u.mqe.un.mb_words[5]; 3543 mp = (struct lpfc_dmabuf *) pmb->context2; 3544 if (byte_count > sizeof(struct static_vport_info) - 3545 offset) 3546 byte_count = sizeof(struct static_vport_info) 3547 - offset; 3548 memcpy(vport_buff + offset, mp->virt, byte_count); 3549 offset += byte_count; 3550 } else { 3551 if (mb->un.varDmp.word_cnt > 3552 sizeof(struct static_vport_info) - offset) 3553 mb->un.varDmp.word_cnt = 3554 sizeof(struct static_vport_info) 3555 - offset; 3556 byte_count = mb->un.varDmp.word_cnt; 3557 lpfc_sli_pcimem_bcopy(((uint8_t *)mb) + DMP_RSP_OFFSET, 3558 vport_buff + offset, 3559 byte_count); 3560 3561 offset += byte_count; 3562 } 3563 3564 } while (byte_count && 3565 offset < sizeof(struct static_vport_info)); 3566 3567 3568 if ((le32_to_cpu(vport_info->signature) != VPORT_INFO_SIG) || 3569 ((le32_to_cpu(vport_info->rev) & VPORT_INFO_REV_MASK) 3570 != VPORT_INFO_REV)) { 3571 lpfc_printf_log(phba, KERN_ERR, LOG_INIT, 3572 "0545 lpfc_create_static_vport bad" 3573 " information header 0x%x 0x%x\n", 3574 le32_to_cpu(vport_info->signature), 3575 le32_to_cpu(vport_info->rev) & VPORT_INFO_REV_MASK); 3576 3577 goto out; 3578 } 3579 3580 shost = lpfc_shost_from_vport(phba->pport); 3581 3582 for (i = 0; i < MAX_STATIC_VPORT_COUNT; i++) { 3583 memset(&vport_id, 0, sizeof(vport_id)); 3584 vport_id.port_name = wwn_to_u64(vport_info->vport_list[i].wwpn); 3585 vport_id.node_name = wwn_to_u64(vport_info->vport_list[i].wwnn); 3586 if (!vport_id.port_name || !vport_id.node_name) 3587 continue; 3588 3589 vport_id.roles = FC_PORT_ROLE_FCP_INITIATOR; 3590 vport_id.vport_type = FC_PORTTYPE_NPIV; 3591 vport_id.disable = false; 3592 new_fc_vport = fc_vport_create(shost, 0, &vport_id); 3593 3594 if (!new_fc_vport) { 3595 lpfc_printf_log(phba, KERN_WARNING, LOG_INIT, 3596 "0546 lpfc_create_static_vport failed to" 3597 " create vport\n"); 3598 continue; 3599 } 3600 3601 vport = *(struct lpfc_vport **)new_fc_vport->dd_data; 3602 vport->vport_flag |= STATIC_VPORT; 3603 } 3604 3605 out: 3606 kfree(vport_info); 3607 if (rc != MBX_TIMEOUT) { 3608 if (pmb->context2) { 3609 mp = (struct lpfc_dmabuf *) pmb->context2; 3610 lpfc_mbuf_free(phba, mp->virt, mp->phys); 3611 kfree(mp); 3612 } 3613 mempool_free(pmb, phba->mbox_mem_pool); 3614 } 3615 3616 return; 3617 } 3618 3619 /* 3620 * This routine handles processing a Fabric REG_LOGIN mailbox 3621 * command upon completion. It is setup in the LPFC_MBOXQ 3622 * as the completion routine when the command is 3623 * handed off to the SLI layer. 3624 */ 3625 void 3626 lpfc_mbx_cmpl_fabric_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 3627 { 3628 struct lpfc_vport *vport = pmb->vport; 3629 MAILBOX_t *mb = &pmb->u.mb; 3630 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1); 3631 struct lpfc_nodelist *ndlp; 3632 struct Scsi_Host *shost; 3633 3634 ndlp = (struct lpfc_nodelist *) pmb->context2; 3635 pmb->context1 = NULL; 3636 pmb->context2 = NULL; 3637 3638 if (mb->mbxStatus) { 3639 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX, 3640 "0258 Register Fabric login error: 0x%x\n", 3641 mb->mbxStatus); 3642 lpfc_mbuf_free(phba, mp->virt, mp->phys); 3643 kfree(mp); 3644 mempool_free(pmb, phba->mbox_mem_pool); 3645 3646 if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) { 3647 /* FLOGI failed, use loop map to make discovery list */ 3648 lpfc_disc_list_loopmap(vport); 3649 3650 /* Start discovery */ 3651 lpfc_disc_start(vport); 3652 /* Decrement the reference count to ndlp after the 3653 * reference to the ndlp are done. 3654 */ 3655 lpfc_nlp_put(ndlp); 3656 return; 3657 } 3658 3659 lpfc_vport_set_state(vport, FC_VPORT_FAILED); 3660 /* Decrement the reference count to ndlp after the reference 3661 * to the ndlp are done. 3662 */ 3663 lpfc_nlp_put(ndlp); 3664 return; 3665 } 3666 3667 if (phba->sli_rev < LPFC_SLI_REV4) 3668 ndlp->nlp_rpi = mb->un.varWords[0]; 3669 ndlp->nlp_flag |= NLP_RPI_REGISTERED; 3670 ndlp->nlp_type |= NLP_FABRIC; 3671 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE); 3672 3673 if (vport->port_state == LPFC_FABRIC_CFG_LINK) { 3674 /* when physical port receive logo donot start 3675 * vport discovery */ 3676 if (!(vport->fc_flag & FC_LOGO_RCVD_DID_CHNG)) 3677 lpfc_start_fdiscs(phba); 3678 else { 3679 shost = lpfc_shost_from_vport(vport); 3680 spin_lock_irq(shost->host_lock); 3681 vport->fc_flag &= ~FC_LOGO_RCVD_DID_CHNG ; 3682 spin_unlock_irq(shost->host_lock); 3683 } 3684 lpfc_do_scr_ns_plogi(phba, vport); 3685 } 3686 3687 lpfc_mbuf_free(phba, mp->virt, mp->phys); 3688 kfree(mp); 3689 mempool_free(pmb, phba->mbox_mem_pool); 3690 3691 /* Drop the reference count from the mbox at the end after 3692 * all the current reference to the ndlp have been done. 3693 */ 3694 lpfc_nlp_put(ndlp); 3695 return; 3696 } 3697 3698 /* 3699 * This routine handles processing a NameServer REG_LOGIN mailbox 3700 * command upon completion. It is setup in the LPFC_MBOXQ 3701 * as the completion routine when the command is 3702 * handed off to the SLI layer. 3703 */ 3704 void 3705 lpfc_mbx_cmpl_ns_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 3706 { 3707 MAILBOX_t *mb = &pmb->u.mb; 3708 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1); 3709 struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) pmb->context2; 3710 struct lpfc_vport *vport = pmb->vport; 3711 3712 pmb->context1 = NULL; 3713 pmb->context2 = NULL; 3714 3715 if (mb->mbxStatus) { 3716 out: 3717 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS, 3718 "0260 Register NameServer error: 0x%x\n", 3719 mb->mbxStatus); 3720 /* decrement the node reference count held for this 3721 * callback function. 3722 */ 3723 lpfc_nlp_put(ndlp); 3724 lpfc_mbuf_free(phba, mp->virt, mp->phys); 3725 kfree(mp); 3726 mempool_free(pmb, phba->mbox_mem_pool); 3727 3728 /* If no other thread is using the ndlp, free it */ 3729 lpfc_nlp_not_used(ndlp); 3730 3731 if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) { 3732 /* 3733 * RegLogin failed, use loop map to make discovery 3734 * list 3735 */ 3736 lpfc_disc_list_loopmap(vport); 3737 3738 /* Start discovery */ 3739 lpfc_disc_start(vport); 3740 return; 3741 } 3742 lpfc_vport_set_state(vport, FC_VPORT_FAILED); 3743 return; 3744 } 3745 3746 if (phba->sli_rev < LPFC_SLI_REV4) 3747 ndlp->nlp_rpi = mb->un.varWords[0]; 3748 ndlp->nlp_flag |= NLP_RPI_REGISTERED; 3749 ndlp->nlp_type |= NLP_FABRIC; 3750 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE); 3751 3752 if (vport->port_state < LPFC_VPORT_READY) { 3753 /* Link up discovery requires Fabric registration. */ 3754 lpfc_ns_cmd(vport, SLI_CTNS_RFF_ID, 0, 0); /* Do this first! */ 3755 lpfc_ns_cmd(vport, SLI_CTNS_RNN_ID, 0, 0); 3756 lpfc_ns_cmd(vport, SLI_CTNS_RSNN_NN, 0, 0); 3757 lpfc_ns_cmd(vport, SLI_CTNS_RSPN_ID, 0, 0); 3758 lpfc_ns_cmd(vport, SLI_CTNS_RFT_ID, 0, 0); 3759 3760 /* Issue SCR just before NameServer GID_FT Query */ 3761 lpfc_issue_els_scr(vport, SCR_DID, 0); 3762 } 3763 3764 vport->fc_ns_retry = 0; 3765 /* Good status, issue CT Request to NameServer */ 3766 if (lpfc_ns_cmd(vport, SLI_CTNS_GID_FT, 0, 0)) { 3767 /* Cannot issue NameServer Query, so finish up discovery */ 3768 goto out; 3769 } 3770 3771 /* decrement the node reference count held for this 3772 * callback function. 3773 */ 3774 lpfc_nlp_put(ndlp); 3775 lpfc_mbuf_free(phba, mp->virt, mp->phys); 3776 kfree(mp); 3777 mempool_free(pmb, phba->mbox_mem_pool); 3778 3779 return; 3780 } 3781 3782 static void 3783 lpfc_register_remote_port(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) 3784 { 3785 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 3786 struct fc_rport *rport; 3787 struct lpfc_rport_data *rdata; 3788 struct fc_rport_identifiers rport_ids; 3789 struct lpfc_hba *phba = vport->phba; 3790 3791 /* Remote port has reappeared. Re-register w/ FC transport */ 3792 rport_ids.node_name = wwn_to_u64(ndlp->nlp_nodename.u.wwn); 3793 rport_ids.port_name = wwn_to_u64(ndlp->nlp_portname.u.wwn); 3794 rport_ids.port_id = ndlp->nlp_DID; 3795 rport_ids.roles = FC_RPORT_ROLE_UNKNOWN; 3796 3797 /* 3798 * We leave our node pointer in rport->dd_data when we unregister a 3799 * FCP target port. But fc_remote_port_add zeros the space to which 3800 * rport->dd_data points. So, if we're reusing a previously 3801 * registered port, drop the reference that we took the last time we 3802 * registered the port. 3803 */ 3804 if (ndlp->rport && ndlp->rport->dd_data && 3805 ((struct lpfc_rport_data *) ndlp->rport->dd_data)->pnode == ndlp) 3806 lpfc_nlp_put(ndlp); 3807 3808 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT, 3809 "rport add: did:x%x flg:x%x type x%x", 3810 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type); 3811 3812 /* Don't add the remote port if unloading. */ 3813 if (vport->load_flag & FC_UNLOADING) 3814 return; 3815 3816 ndlp->rport = rport = fc_remote_port_add(shost, 0, &rport_ids); 3817 if (!rport || !get_device(&rport->dev)) { 3818 dev_printk(KERN_WARNING, &phba->pcidev->dev, 3819 "Warning: fc_remote_port_add failed\n"); 3820 return; 3821 } 3822 3823 /* initialize static port data */ 3824 rport->maxframe_size = ndlp->nlp_maxframe; 3825 rport->supported_classes = ndlp->nlp_class_sup; 3826 rdata = rport->dd_data; 3827 rdata->pnode = lpfc_nlp_get(ndlp); 3828 3829 if (ndlp->nlp_type & NLP_FCP_TARGET) 3830 rport_ids.roles |= FC_RPORT_ROLE_FCP_TARGET; 3831 if (ndlp->nlp_type & NLP_FCP_INITIATOR) 3832 rport_ids.roles |= FC_RPORT_ROLE_FCP_INITIATOR; 3833 3834 if (rport_ids.roles != FC_RPORT_ROLE_UNKNOWN) 3835 fc_remote_port_rolechg(rport, rport_ids.roles); 3836 3837 if ((rport->scsi_target_id != -1) && 3838 (rport->scsi_target_id < LPFC_MAX_TARGET)) { 3839 ndlp->nlp_sid = rport->scsi_target_id; 3840 } 3841 return; 3842 } 3843 3844 static void 3845 lpfc_unregister_remote_port(struct lpfc_nodelist *ndlp) 3846 { 3847 struct fc_rport *rport = ndlp->rport; 3848 3849 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_RPORT, 3850 "rport delete: did:x%x flg:x%x type x%x", 3851 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type); 3852 3853 fc_remote_port_delete(rport); 3854 3855 return; 3856 } 3857 3858 static void 3859 lpfc_nlp_counters(struct lpfc_vport *vport, int state, int count) 3860 { 3861 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 3862 3863 spin_lock_irq(shost->host_lock); 3864 switch (state) { 3865 case NLP_STE_UNUSED_NODE: 3866 vport->fc_unused_cnt += count; 3867 break; 3868 case NLP_STE_PLOGI_ISSUE: 3869 vport->fc_plogi_cnt += count; 3870 break; 3871 case NLP_STE_ADISC_ISSUE: 3872 vport->fc_adisc_cnt += count; 3873 break; 3874 case NLP_STE_REG_LOGIN_ISSUE: 3875 vport->fc_reglogin_cnt += count; 3876 break; 3877 case NLP_STE_PRLI_ISSUE: 3878 vport->fc_prli_cnt += count; 3879 break; 3880 case NLP_STE_UNMAPPED_NODE: 3881 vport->fc_unmap_cnt += count; 3882 break; 3883 case NLP_STE_MAPPED_NODE: 3884 vport->fc_map_cnt += count; 3885 break; 3886 case NLP_STE_NPR_NODE: 3887 vport->fc_npr_cnt += count; 3888 break; 3889 } 3890 spin_unlock_irq(shost->host_lock); 3891 } 3892 3893 static void 3894 lpfc_nlp_state_cleanup(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 3895 int old_state, int new_state) 3896 { 3897 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 3898 3899 if (new_state == NLP_STE_UNMAPPED_NODE) { 3900 ndlp->nlp_flag &= ~NLP_NODEV_REMOVE; 3901 ndlp->nlp_type |= NLP_FC_NODE; 3902 } 3903 if (new_state == NLP_STE_MAPPED_NODE) 3904 ndlp->nlp_flag &= ~NLP_NODEV_REMOVE; 3905 if (new_state == NLP_STE_NPR_NODE) 3906 ndlp->nlp_flag &= ~NLP_RCV_PLOGI; 3907 3908 /* Transport interface */ 3909 if (ndlp->rport && (old_state == NLP_STE_MAPPED_NODE || 3910 old_state == NLP_STE_UNMAPPED_NODE)) { 3911 vport->phba->nport_event_cnt++; 3912 lpfc_unregister_remote_port(ndlp); 3913 } 3914 3915 if (new_state == NLP_STE_MAPPED_NODE || 3916 new_state == NLP_STE_UNMAPPED_NODE) { 3917 vport->phba->nport_event_cnt++; 3918 /* 3919 * Tell the fc transport about the port, if we haven't 3920 * already. If we have, and it's a scsi entity, be 3921 * sure to unblock any attached scsi devices 3922 */ 3923 lpfc_register_remote_port(vport, ndlp); 3924 } 3925 if ((new_state == NLP_STE_MAPPED_NODE) && 3926 (vport->stat_data_enabled)) { 3927 /* 3928 * A new target is discovered, if there is no buffer for 3929 * statistical data collection allocate buffer. 3930 */ 3931 ndlp->lat_data = kcalloc(LPFC_MAX_BUCKET_COUNT, 3932 sizeof(struct lpfc_scsicmd_bkt), 3933 GFP_KERNEL); 3934 3935 if (!ndlp->lat_data) 3936 lpfc_printf_vlog(vport, KERN_ERR, LOG_NODE, 3937 "0286 lpfc_nlp_state_cleanup failed to " 3938 "allocate statistical data buffer DID " 3939 "0x%x\n", ndlp->nlp_DID); 3940 } 3941 /* 3942 * if we added to Mapped list, but the remote port 3943 * registration failed or assigned a target id outside 3944 * our presentable range - move the node to the 3945 * Unmapped List 3946 */ 3947 if (new_state == NLP_STE_MAPPED_NODE && 3948 (!ndlp->rport || 3949 ndlp->rport->scsi_target_id == -1 || 3950 ndlp->rport->scsi_target_id >= LPFC_MAX_TARGET)) { 3951 spin_lock_irq(shost->host_lock); 3952 ndlp->nlp_flag |= NLP_TGT_NO_SCSIID; 3953 spin_unlock_irq(shost->host_lock); 3954 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE); 3955 } 3956 } 3957 3958 static char * 3959 lpfc_nlp_state_name(char *buffer, size_t size, int state) 3960 { 3961 static char *states[] = { 3962 [NLP_STE_UNUSED_NODE] = "UNUSED", 3963 [NLP_STE_PLOGI_ISSUE] = "PLOGI", 3964 [NLP_STE_ADISC_ISSUE] = "ADISC", 3965 [NLP_STE_REG_LOGIN_ISSUE] = "REGLOGIN", 3966 [NLP_STE_PRLI_ISSUE] = "PRLI", 3967 [NLP_STE_UNMAPPED_NODE] = "UNMAPPED", 3968 [NLP_STE_MAPPED_NODE] = "MAPPED", 3969 [NLP_STE_NPR_NODE] = "NPR", 3970 }; 3971 3972 if (state < NLP_STE_MAX_STATE && states[state]) 3973 strlcpy(buffer, states[state], size); 3974 else 3975 snprintf(buffer, size, "unknown (%d)", state); 3976 return buffer; 3977 } 3978 3979 void 3980 lpfc_nlp_set_state(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 3981 int state) 3982 { 3983 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 3984 int old_state = ndlp->nlp_state; 3985 char name1[16], name2[16]; 3986 3987 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE, 3988 "0904 NPort state transition x%06x, %s -> %s\n", 3989 ndlp->nlp_DID, 3990 lpfc_nlp_state_name(name1, sizeof(name1), old_state), 3991 lpfc_nlp_state_name(name2, sizeof(name2), state)); 3992 3993 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE, 3994 "node statechg did:x%x old:%d ste:%d", 3995 ndlp->nlp_DID, old_state, state); 3996 3997 if (old_state == NLP_STE_NPR_NODE && 3998 state != NLP_STE_NPR_NODE) 3999 lpfc_cancel_retry_delay_tmo(vport, ndlp); 4000 if (old_state == NLP_STE_UNMAPPED_NODE) { 4001 ndlp->nlp_flag &= ~NLP_TGT_NO_SCSIID; 4002 ndlp->nlp_type &= ~NLP_FC_NODE; 4003 } 4004 4005 if (list_empty(&ndlp->nlp_listp)) { 4006 spin_lock_irq(shost->host_lock); 4007 list_add_tail(&ndlp->nlp_listp, &vport->fc_nodes); 4008 spin_unlock_irq(shost->host_lock); 4009 } else if (old_state) 4010 lpfc_nlp_counters(vport, old_state, -1); 4011 4012 ndlp->nlp_state = state; 4013 lpfc_nlp_counters(vport, state, 1); 4014 lpfc_nlp_state_cleanup(vport, ndlp, old_state, state); 4015 } 4016 4017 void 4018 lpfc_enqueue_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) 4019 { 4020 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 4021 4022 if (list_empty(&ndlp->nlp_listp)) { 4023 spin_lock_irq(shost->host_lock); 4024 list_add_tail(&ndlp->nlp_listp, &vport->fc_nodes); 4025 spin_unlock_irq(shost->host_lock); 4026 } 4027 } 4028 4029 void 4030 lpfc_dequeue_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) 4031 { 4032 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 4033 4034 lpfc_cancel_retry_delay_tmo(vport, ndlp); 4035 if (ndlp->nlp_state && !list_empty(&ndlp->nlp_listp)) 4036 lpfc_nlp_counters(vport, ndlp->nlp_state, -1); 4037 spin_lock_irq(shost->host_lock); 4038 list_del_init(&ndlp->nlp_listp); 4039 spin_unlock_irq(shost->host_lock); 4040 lpfc_nlp_state_cleanup(vport, ndlp, ndlp->nlp_state, 4041 NLP_STE_UNUSED_NODE); 4042 } 4043 4044 static void 4045 lpfc_disable_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) 4046 { 4047 lpfc_cancel_retry_delay_tmo(vport, ndlp); 4048 if (ndlp->nlp_state && !list_empty(&ndlp->nlp_listp)) 4049 lpfc_nlp_counters(vport, ndlp->nlp_state, -1); 4050 lpfc_nlp_state_cleanup(vport, ndlp, ndlp->nlp_state, 4051 NLP_STE_UNUSED_NODE); 4052 } 4053 /** 4054 * lpfc_initialize_node - Initialize all fields of node object 4055 * @vport: Pointer to Virtual Port object. 4056 * @ndlp: Pointer to FC node object. 4057 * @did: FC_ID of the node. 4058 * 4059 * This function is always called when node object need to be initialized. 4060 * It initializes all the fields of the node object. Although the reference 4061 * to phba from @ndlp can be obtained indirectly through it's reference to 4062 * @vport, a direct reference to phba is taken here by @ndlp. This is due 4063 * to the life-span of the @ndlp might go beyond the existence of @vport as 4064 * the final release of ndlp is determined by its reference count. And, the 4065 * operation on @ndlp needs the reference to phba. 4066 **/ 4067 static inline void 4068 lpfc_initialize_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 4069 uint32_t did) 4070 { 4071 INIT_LIST_HEAD(&ndlp->els_retry_evt.evt_listp); 4072 INIT_LIST_HEAD(&ndlp->dev_loss_evt.evt_listp); 4073 init_timer(&ndlp->nlp_delayfunc); 4074 ndlp->nlp_delayfunc.function = lpfc_els_retry_delay; 4075 ndlp->nlp_delayfunc.data = (unsigned long)ndlp; 4076 ndlp->nlp_DID = did; 4077 ndlp->vport = vport; 4078 ndlp->phba = vport->phba; 4079 ndlp->nlp_sid = NLP_NO_SID; 4080 kref_init(&ndlp->kref); 4081 NLP_INT_NODE_ACT(ndlp); 4082 atomic_set(&ndlp->cmd_pending, 0); 4083 ndlp->cmd_qdepth = vport->cfg_tgt_queue_depth; 4084 if (vport->phba->sli_rev == LPFC_SLI_REV4) 4085 ndlp->nlp_rpi = lpfc_sli4_alloc_rpi(vport->phba); 4086 } 4087 4088 struct lpfc_nodelist * 4089 lpfc_enable_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 4090 int state) 4091 { 4092 struct lpfc_hba *phba = vport->phba; 4093 uint32_t did; 4094 unsigned long flags; 4095 4096 if (!ndlp) 4097 return NULL; 4098 4099 spin_lock_irqsave(&phba->ndlp_lock, flags); 4100 /* The ndlp should not be in memory free mode */ 4101 if (NLP_CHK_FREE_REQ(ndlp)) { 4102 spin_unlock_irqrestore(&phba->ndlp_lock, flags); 4103 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NODE, 4104 "0277 lpfc_enable_node: ndlp:x%p " 4105 "usgmap:x%x refcnt:%d\n", 4106 (void *)ndlp, ndlp->nlp_usg_map, 4107 atomic_read(&ndlp->kref.refcount)); 4108 return NULL; 4109 } 4110 /* The ndlp should not already be in active mode */ 4111 if (NLP_CHK_NODE_ACT(ndlp)) { 4112 spin_unlock_irqrestore(&phba->ndlp_lock, flags); 4113 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NODE, 4114 "0278 lpfc_enable_node: ndlp:x%p " 4115 "usgmap:x%x refcnt:%d\n", 4116 (void *)ndlp, ndlp->nlp_usg_map, 4117 atomic_read(&ndlp->kref.refcount)); 4118 return NULL; 4119 } 4120 4121 /* Keep the original DID */ 4122 did = ndlp->nlp_DID; 4123 4124 /* re-initialize ndlp except of ndlp linked list pointer */ 4125 memset((((char *)ndlp) + sizeof (struct list_head)), 0, 4126 sizeof (struct lpfc_nodelist) - sizeof (struct list_head)); 4127 lpfc_initialize_node(vport, ndlp, did); 4128 4129 spin_unlock_irqrestore(&phba->ndlp_lock, flags); 4130 4131 if (state != NLP_STE_UNUSED_NODE) 4132 lpfc_nlp_set_state(vport, ndlp, state); 4133 4134 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE, 4135 "node enable: did:x%x", 4136 ndlp->nlp_DID, 0, 0); 4137 return ndlp; 4138 } 4139 4140 void 4141 lpfc_drop_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) 4142 { 4143 /* 4144 * Use of lpfc_drop_node and UNUSED list: lpfc_drop_node should 4145 * be used if we wish to issue the "last" lpfc_nlp_put() to remove 4146 * the ndlp from the vport. The ndlp marked as UNUSED on the list 4147 * until ALL other outstanding threads have completed. We check 4148 * that the ndlp not already in the UNUSED state before we proceed. 4149 */ 4150 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE) 4151 return; 4152 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNUSED_NODE); 4153 if (vport->phba->sli_rev == LPFC_SLI_REV4) 4154 lpfc_cleanup_vports_rrqs(vport, ndlp); 4155 lpfc_nlp_put(ndlp); 4156 return; 4157 } 4158 4159 /* 4160 * Start / ReStart rescue timer for Discovery / RSCN handling 4161 */ 4162 void 4163 lpfc_set_disctmo(struct lpfc_vport *vport) 4164 { 4165 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 4166 struct lpfc_hba *phba = vport->phba; 4167 uint32_t tmo; 4168 4169 if (vport->port_state == LPFC_LOCAL_CFG_LINK) { 4170 /* For FAN, timeout should be greater than edtov */ 4171 tmo = (((phba->fc_edtov + 999) / 1000) + 1); 4172 } else { 4173 /* Normal discovery timeout should be > than ELS/CT timeout 4174 * FC spec states we need 3 * ratov for CT requests 4175 */ 4176 tmo = ((phba->fc_ratov * 3) + 3); 4177 } 4178 4179 4180 if (!timer_pending(&vport->fc_disctmo)) { 4181 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, 4182 "set disc timer: tmo:x%x state:x%x flg:x%x", 4183 tmo, vport->port_state, vport->fc_flag); 4184 } 4185 4186 mod_timer(&vport->fc_disctmo, jiffies + HZ * tmo); 4187 spin_lock_irq(shost->host_lock); 4188 vport->fc_flag |= FC_DISC_TMO; 4189 spin_unlock_irq(shost->host_lock); 4190 4191 /* Start Discovery Timer state <hba_state> */ 4192 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, 4193 "0247 Start Discovery Timer state x%x " 4194 "Data: x%x x%lx x%x x%x\n", 4195 vport->port_state, tmo, 4196 (unsigned long)&vport->fc_disctmo, vport->fc_plogi_cnt, 4197 vport->fc_adisc_cnt); 4198 4199 return; 4200 } 4201 4202 /* 4203 * Cancel rescue timer for Discovery / RSCN handling 4204 */ 4205 int 4206 lpfc_can_disctmo(struct lpfc_vport *vport) 4207 { 4208 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 4209 unsigned long iflags; 4210 4211 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, 4212 "can disc timer: state:x%x rtry:x%x flg:x%x", 4213 vport->port_state, vport->fc_ns_retry, vport->fc_flag); 4214 4215 /* Turn off discovery timer if its running */ 4216 if (vport->fc_flag & FC_DISC_TMO) { 4217 spin_lock_irqsave(shost->host_lock, iflags); 4218 vport->fc_flag &= ~FC_DISC_TMO; 4219 spin_unlock_irqrestore(shost->host_lock, iflags); 4220 del_timer_sync(&vport->fc_disctmo); 4221 spin_lock_irqsave(&vport->work_port_lock, iflags); 4222 vport->work_port_events &= ~WORKER_DISC_TMO; 4223 spin_unlock_irqrestore(&vport->work_port_lock, iflags); 4224 } 4225 4226 /* Cancel Discovery Timer state <hba_state> */ 4227 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, 4228 "0248 Cancel Discovery Timer state x%x " 4229 "Data: x%x x%x x%x\n", 4230 vport->port_state, vport->fc_flag, 4231 vport->fc_plogi_cnt, vport->fc_adisc_cnt); 4232 return 0; 4233 } 4234 4235 /* 4236 * Check specified ring for outstanding IOCB on the SLI queue 4237 * Return true if iocb matches the specified nport 4238 */ 4239 int 4240 lpfc_check_sli_ndlp(struct lpfc_hba *phba, 4241 struct lpfc_sli_ring *pring, 4242 struct lpfc_iocbq *iocb, 4243 struct lpfc_nodelist *ndlp) 4244 { 4245 struct lpfc_sli *psli = &phba->sli; 4246 IOCB_t *icmd = &iocb->iocb; 4247 struct lpfc_vport *vport = ndlp->vport; 4248 4249 if (iocb->vport != vport) 4250 return 0; 4251 4252 if (pring->ringno == LPFC_ELS_RING) { 4253 switch (icmd->ulpCommand) { 4254 case CMD_GEN_REQUEST64_CR: 4255 if (iocb->context_un.ndlp == ndlp) 4256 return 1; 4257 case CMD_ELS_REQUEST64_CR: 4258 if (icmd->un.elsreq64.remoteID == ndlp->nlp_DID) 4259 return 1; 4260 case CMD_XMIT_ELS_RSP64_CX: 4261 if (iocb->context1 == (uint8_t *) ndlp) 4262 return 1; 4263 } 4264 } else if (pring->ringno == psli->extra_ring) { 4265 4266 } else if (pring->ringno == psli->fcp_ring) { 4267 /* Skip match check if waiting to relogin to FCP target */ 4268 if ((ndlp->nlp_type & NLP_FCP_TARGET) && 4269 (ndlp->nlp_flag & NLP_DELAY_TMO)) { 4270 return 0; 4271 } 4272 if (icmd->ulpContext == (volatile ushort)ndlp->nlp_rpi) { 4273 return 1; 4274 } 4275 } else if (pring->ringno == psli->next_ring) { 4276 4277 } 4278 return 0; 4279 } 4280 4281 /* 4282 * Free resources / clean up outstanding I/Os 4283 * associated with nlp_rpi in the LPFC_NODELIST entry. 4284 */ 4285 static int 4286 lpfc_no_rpi(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp) 4287 { 4288 LIST_HEAD(completions); 4289 struct lpfc_sli *psli; 4290 struct lpfc_sli_ring *pring; 4291 struct lpfc_iocbq *iocb, *next_iocb; 4292 uint32_t i; 4293 4294 lpfc_fabric_abort_nport(ndlp); 4295 4296 /* 4297 * Everything that matches on txcmplq will be returned 4298 * by firmware with a no rpi error. 4299 */ 4300 psli = &phba->sli; 4301 if (ndlp->nlp_flag & NLP_RPI_REGISTERED) { 4302 /* Now process each ring */ 4303 for (i = 0; i < psli->num_rings; i++) { 4304 pring = &psli->ring[i]; 4305 4306 spin_lock_irq(&phba->hbalock); 4307 list_for_each_entry_safe(iocb, next_iocb, &pring->txq, 4308 list) { 4309 /* 4310 * Check to see if iocb matches the nport we are 4311 * looking for 4312 */ 4313 if ((lpfc_check_sli_ndlp(phba, pring, iocb, 4314 ndlp))) { 4315 /* It matches, so deque and call compl 4316 with an error */ 4317 list_move_tail(&iocb->list, 4318 &completions); 4319 pring->txq_cnt--; 4320 } 4321 } 4322 spin_unlock_irq(&phba->hbalock); 4323 } 4324 } 4325 4326 /* Cancel all the IOCBs from the completions list */ 4327 lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT, 4328 IOERR_SLI_ABORTED); 4329 4330 return 0; 4331 } 4332 4333 /* 4334 * Free rpi associated with LPFC_NODELIST entry. 4335 * This routine is called from lpfc_freenode(), when we are removing 4336 * a LPFC_NODELIST entry. It is also called if the driver initiates a 4337 * LOGO that completes successfully, and we are waiting to PLOGI back 4338 * to the remote NPort. In addition, it is called after we receive 4339 * and unsolicated ELS cmd, send back a rsp, the rsp completes and 4340 * we are waiting to PLOGI back to the remote NPort. 4341 */ 4342 int 4343 lpfc_unreg_rpi(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) 4344 { 4345 struct lpfc_hba *phba = vport->phba; 4346 LPFC_MBOXQ_t *mbox; 4347 int rc; 4348 uint16_t rpi; 4349 4350 if (ndlp->nlp_flag & NLP_RPI_REGISTERED) { 4351 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 4352 if (mbox) { 4353 /* SLI4 ports require the physical rpi value. */ 4354 rpi = ndlp->nlp_rpi; 4355 if (phba->sli_rev == LPFC_SLI_REV4) 4356 rpi = phba->sli4_hba.rpi_ids[ndlp->nlp_rpi]; 4357 lpfc_unreg_login(phba, vport->vpi, rpi, mbox); 4358 mbox->vport = vport; 4359 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl; 4360 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT); 4361 if (rc == MBX_NOT_FINISHED) 4362 mempool_free(mbox, phba->mbox_mem_pool); 4363 } 4364 lpfc_no_rpi(phba, ndlp); 4365 4366 if (phba->sli_rev != LPFC_SLI_REV4) 4367 ndlp->nlp_rpi = 0; 4368 ndlp->nlp_flag &= ~NLP_RPI_REGISTERED; 4369 ndlp->nlp_flag &= ~NLP_NPR_ADISC; 4370 return 1; 4371 } 4372 return 0; 4373 } 4374 4375 /** 4376 * lpfc_unreg_hba_rpis - Unregister rpis registered to the hba. 4377 * @phba: pointer to lpfc hba data structure. 4378 * 4379 * This routine is invoked to unregister all the currently registered RPIs 4380 * to the HBA. 4381 **/ 4382 void 4383 lpfc_unreg_hba_rpis(struct lpfc_hba *phba) 4384 { 4385 struct lpfc_vport **vports; 4386 struct lpfc_nodelist *ndlp; 4387 struct Scsi_Host *shost; 4388 int i; 4389 4390 vports = lpfc_create_vport_work_array(phba); 4391 if (!vports) { 4392 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY, 4393 "2884 Vport array allocation failed \n"); 4394 return; 4395 } 4396 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) { 4397 shost = lpfc_shost_from_vport(vports[i]); 4398 spin_lock_irq(shost->host_lock); 4399 list_for_each_entry(ndlp, &vports[i]->fc_nodes, nlp_listp) { 4400 if (ndlp->nlp_flag & NLP_RPI_REGISTERED) { 4401 /* The mempool_alloc might sleep */ 4402 spin_unlock_irq(shost->host_lock); 4403 lpfc_unreg_rpi(vports[i], ndlp); 4404 spin_lock_irq(shost->host_lock); 4405 } 4406 } 4407 spin_unlock_irq(shost->host_lock); 4408 } 4409 lpfc_destroy_vport_work_array(phba, vports); 4410 } 4411 4412 void 4413 lpfc_unreg_all_rpis(struct lpfc_vport *vport) 4414 { 4415 struct lpfc_hba *phba = vport->phba; 4416 LPFC_MBOXQ_t *mbox; 4417 int rc; 4418 4419 if (phba->sli_rev == LPFC_SLI_REV4) { 4420 lpfc_sli4_unreg_all_rpis(vport); 4421 return; 4422 } 4423 4424 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 4425 if (mbox) { 4426 lpfc_unreg_login(phba, vport->vpi, LPFC_UNREG_ALL_RPIS_VPORT, 4427 mbox); 4428 mbox->vport = vport; 4429 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl; 4430 mbox->context1 = NULL; 4431 rc = lpfc_sli_issue_mbox_wait(phba, mbox, LPFC_MBOX_TMO); 4432 if (rc != MBX_TIMEOUT) 4433 mempool_free(mbox, phba->mbox_mem_pool); 4434 4435 if ((rc == MBX_TIMEOUT) || (rc == MBX_NOT_FINISHED)) 4436 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX | LOG_VPORT, 4437 "1836 Could not issue " 4438 "unreg_login(all_rpis) status %d\n", rc); 4439 } 4440 } 4441 4442 void 4443 lpfc_unreg_default_rpis(struct lpfc_vport *vport) 4444 { 4445 struct lpfc_hba *phba = vport->phba; 4446 LPFC_MBOXQ_t *mbox; 4447 int rc; 4448 4449 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 4450 if (mbox) { 4451 lpfc_unreg_did(phba, vport->vpi, LPFC_UNREG_ALL_DFLT_RPIS, 4452 mbox); 4453 mbox->vport = vport; 4454 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl; 4455 mbox->context1 = NULL; 4456 rc = lpfc_sli_issue_mbox_wait(phba, mbox, LPFC_MBOX_TMO); 4457 if (rc != MBX_TIMEOUT) 4458 mempool_free(mbox, phba->mbox_mem_pool); 4459 4460 if ((rc == MBX_TIMEOUT) || (rc == MBX_NOT_FINISHED)) 4461 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX | LOG_VPORT, 4462 "1815 Could not issue " 4463 "unreg_did (default rpis) status %d\n", 4464 rc); 4465 } 4466 } 4467 4468 /* 4469 * Free resources associated with LPFC_NODELIST entry 4470 * so it can be freed. 4471 */ 4472 static int 4473 lpfc_cleanup_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) 4474 { 4475 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 4476 struct lpfc_hba *phba = vport->phba; 4477 LPFC_MBOXQ_t *mb, *nextmb; 4478 struct lpfc_dmabuf *mp; 4479 4480 /* Cleanup node for NPort <nlp_DID> */ 4481 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE, 4482 "0900 Cleanup node for NPort x%x " 4483 "Data: x%x x%x x%x\n", 4484 ndlp->nlp_DID, ndlp->nlp_flag, 4485 ndlp->nlp_state, ndlp->nlp_rpi); 4486 if (NLP_CHK_FREE_REQ(ndlp)) { 4487 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NODE, 4488 "0280 lpfc_cleanup_node: ndlp:x%p " 4489 "usgmap:x%x refcnt:%d\n", 4490 (void *)ndlp, ndlp->nlp_usg_map, 4491 atomic_read(&ndlp->kref.refcount)); 4492 lpfc_dequeue_node(vport, ndlp); 4493 } else { 4494 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NODE, 4495 "0281 lpfc_cleanup_node: ndlp:x%p " 4496 "usgmap:x%x refcnt:%d\n", 4497 (void *)ndlp, ndlp->nlp_usg_map, 4498 atomic_read(&ndlp->kref.refcount)); 4499 lpfc_disable_node(vport, ndlp); 4500 } 4501 4502 /* cleanup any ndlp on mbox q waiting for reglogin cmpl */ 4503 if ((mb = phba->sli.mbox_active)) { 4504 if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) && 4505 (ndlp == (struct lpfc_nodelist *) mb->context2)) { 4506 mb->context2 = NULL; 4507 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl; 4508 } 4509 } 4510 4511 spin_lock_irq(&phba->hbalock); 4512 /* Cleanup REG_LOGIN completions which are not yet processed */ 4513 list_for_each_entry(mb, &phba->sli.mboxq_cmpl, list) { 4514 if ((mb->u.mb.mbxCommand != MBX_REG_LOGIN64) || 4515 (ndlp != (struct lpfc_nodelist *) mb->context2)) 4516 continue; 4517 4518 mb->context2 = NULL; 4519 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl; 4520 } 4521 4522 list_for_each_entry_safe(mb, nextmb, &phba->sli.mboxq, list) { 4523 if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) && 4524 (ndlp == (struct lpfc_nodelist *) mb->context2)) { 4525 mp = (struct lpfc_dmabuf *) (mb->context1); 4526 if (mp) { 4527 __lpfc_mbuf_free(phba, mp->virt, mp->phys); 4528 kfree(mp); 4529 } 4530 list_del(&mb->list); 4531 mempool_free(mb, phba->mbox_mem_pool); 4532 /* We shall not invoke the lpfc_nlp_put to decrement 4533 * the ndlp reference count as we are in the process 4534 * of lpfc_nlp_release. 4535 */ 4536 } 4537 } 4538 spin_unlock_irq(&phba->hbalock); 4539 4540 lpfc_els_abort(phba, ndlp); 4541 4542 spin_lock_irq(shost->host_lock); 4543 ndlp->nlp_flag &= ~NLP_DELAY_TMO; 4544 spin_unlock_irq(shost->host_lock); 4545 4546 ndlp->nlp_last_elscmd = 0; 4547 del_timer_sync(&ndlp->nlp_delayfunc); 4548 4549 list_del_init(&ndlp->els_retry_evt.evt_listp); 4550 list_del_init(&ndlp->dev_loss_evt.evt_listp); 4551 lpfc_cleanup_vports_rrqs(vport, ndlp); 4552 lpfc_unreg_rpi(vport, ndlp); 4553 4554 return 0; 4555 } 4556 4557 /* 4558 * Check to see if we can free the nlp back to the freelist. 4559 * If we are in the middle of using the nlp in the discovery state 4560 * machine, defer the free till we reach the end of the state machine. 4561 */ 4562 static void 4563 lpfc_nlp_remove(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) 4564 { 4565 struct lpfc_hba *phba = vport->phba; 4566 struct lpfc_rport_data *rdata; 4567 LPFC_MBOXQ_t *mbox; 4568 int rc; 4569 4570 lpfc_cancel_retry_delay_tmo(vport, ndlp); 4571 if ((ndlp->nlp_flag & NLP_DEFER_RM) && 4572 !(ndlp->nlp_flag & NLP_REG_LOGIN_SEND) && 4573 !(ndlp->nlp_flag & NLP_RPI_REGISTERED)) { 4574 /* For this case we need to cleanup the default rpi 4575 * allocated by the firmware. 4576 */ 4577 if ((mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL)) 4578 != NULL) { 4579 rc = lpfc_reg_rpi(phba, vport->vpi, ndlp->nlp_DID, 4580 (uint8_t *) &vport->fc_sparam, mbox, ndlp->nlp_rpi); 4581 if (rc) { 4582 mempool_free(mbox, phba->mbox_mem_pool); 4583 } 4584 else { 4585 mbox->mbox_flag |= LPFC_MBX_IMED_UNREG; 4586 mbox->mbox_cmpl = lpfc_mbx_cmpl_dflt_rpi; 4587 mbox->vport = vport; 4588 mbox->context2 = NULL; 4589 rc =lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT); 4590 if (rc == MBX_NOT_FINISHED) { 4591 mempool_free(mbox, phba->mbox_mem_pool); 4592 } 4593 } 4594 } 4595 } 4596 lpfc_cleanup_node(vport, ndlp); 4597 4598 /* 4599 * We can get here with a non-NULL ndlp->rport because when we 4600 * unregister a rport we don't break the rport/node linkage. So if we 4601 * do, make sure we don't leaving any dangling pointers behind. 4602 */ 4603 if (ndlp->rport) { 4604 rdata = ndlp->rport->dd_data; 4605 rdata->pnode = NULL; 4606 ndlp->rport = NULL; 4607 } 4608 } 4609 4610 static int 4611 lpfc_matchdid(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 4612 uint32_t did) 4613 { 4614 D_ID mydid, ndlpdid, matchdid; 4615 4616 if (did == Bcast_DID) 4617 return 0; 4618 4619 /* First check for Direct match */ 4620 if (ndlp->nlp_DID == did) 4621 return 1; 4622 4623 /* Next check for area/domain identically equals 0 match */ 4624 mydid.un.word = vport->fc_myDID; 4625 if ((mydid.un.b.domain == 0) && (mydid.un.b.area == 0)) { 4626 return 0; 4627 } 4628 4629 matchdid.un.word = did; 4630 ndlpdid.un.word = ndlp->nlp_DID; 4631 if (matchdid.un.b.id == ndlpdid.un.b.id) { 4632 if ((mydid.un.b.domain == matchdid.un.b.domain) && 4633 (mydid.un.b.area == matchdid.un.b.area)) { 4634 if ((ndlpdid.un.b.domain == 0) && 4635 (ndlpdid.un.b.area == 0)) { 4636 if (ndlpdid.un.b.id) 4637 return 1; 4638 } 4639 return 0; 4640 } 4641 4642 matchdid.un.word = ndlp->nlp_DID; 4643 if ((mydid.un.b.domain == ndlpdid.un.b.domain) && 4644 (mydid.un.b.area == ndlpdid.un.b.area)) { 4645 if ((matchdid.un.b.domain == 0) && 4646 (matchdid.un.b.area == 0)) { 4647 if (matchdid.un.b.id) 4648 return 1; 4649 } 4650 } 4651 } 4652 return 0; 4653 } 4654 4655 /* Search for a nodelist entry */ 4656 static struct lpfc_nodelist * 4657 __lpfc_findnode_did(struct lpfc_vport *vport, uint32_t did) 4658 { 4659 struct lpfc_nodelist *ndlp; 4660 uint32_t data1; 4661 4662 list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) { 4663 if (lpfc_matchdid(vport, ndlp, did)) { 4664 data1 = (((uint32_t) ndlp->nlp_state << 24) | 4665 ((uint32_t) ndlp->nlp_xri << 16) | 4666 ((uint32_t) ndlp->nlp_type << 8) | 4667 ((uint32_t) ndlp->nlp_rpi & 0xff)); 4668 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE, 4669 "0929 FIND node DID " 4670 "Data: x%p x%x x%x x%x\n", 4671 ndlp, ndlp->nlp_DID, 4672 ndlp->nlp_flag, data1); 4673 return ndlp; 4674 } 4675 } 4676 4677 /* FIND node did <did> NOT FOUND */ 4678 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE, 4679 "0932 FIND node did x%x NOT FOUND.\n", did); 4680 return NULL; 4681 } 4682 4683 struct lpfc_nodelist * 4684 lpfc_findnode_did(struct lpfc_vport *vport, uint32_t did) 4685 { 4686 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 4687 struct lpfc_nodelist *ndlp; 4688 unsigned long iflags; 4689 4690 spin_lock_irqsave(shost->host_lock, iflags); 4691 ndlp = __lpfc_findnode_did(vport, did); 4692 spin_unlock_irqrestore(shost->host_lock, iflags); 4693 return ndlp; 4694 } 4695 4696 struct lpfc_nodelist * 4697 lpfc_setup_disc_node(struct lpfc_vport *vport, uint32_t did) 4698 { 4699 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 4700 struct lpfc_nodelist *ndlp; 4701 4702 ndlp = lpfc_findnode_did(vport, did); 4703 if (!ndlp) { 4704 if ((vport->fc_flag & FC_RSCN_MODE) != 0 && 4705 lpfc_rscn_payload_check(vport, did) == 0) 4706 return NULL; 4707 ndlp = (struct lpfc_nodelist *) 4708 mempool_alloc(vport->phba->nlp_mem_pool, GFP_KERNEL); 4709 if (!ndlp) 4710 return NULL; 4711 lpfc_nlp_init(vport, ndlp, did); 4712 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE); 4713 spin_lock_irq(shost->host_lock); 4714 ndlp->nlp_flag |= NLP_NPR_2B_DISC; 4715 spin_unlock_irq(shost->host_lock); 4716 return ndlp; 4717 } else if (!NLP_CHK_NODE_ACT(ndlp)) { 4718 ndlp = lpfc_enable_node(vport, ndlp, NLP_STE_NPR_NODE); 4719 if (!ndlp) 4720 return NULL; 4721 spin_lock_irq(shost->host_lock); 4722 ndlp->nlp_flag |= NLP_NPR_2B_DISC; 4723 spin_unlock_irq(shost->host_lock); 4724 return ndlp; 4725 } 4726 4727 if ((vport->fc_flag & FC_RSCN_MODE) && 4728 !(vport->fc_flag & FC_NDISC_ACTIVE)) { 4729 if (lpfc_rscn_payload_check(vport, did)) { 4730 /* If we've already received a PLOGI from this NPort 4731 * we don't need to try to discover it again. 4732 */ 4733 if (ndlp->nlp_flag & NLP_RCV_PLOGI) 4734 return NULL; 4735 4736 /* Since this node is marked for discovery, 4737 * delay timeout is not needed. 4738 */ 4739 lpfc_cancel_retry_delay_tmo(vport, ndlp); 4740 spin_lock_irq(shost->host_lock); 4741 ndlp->nlp_flag |= NLP_NPR_2B_DISC; 4742 spin_unlock_irq(shost->host_lock); 4743 } else 4744 ndlp = NULL; 4745 } else { 4746 /* If we've already received a PLOGI from this NPort, 4747 * or we are already in the process of discovery on it, 4748 * we don't need to try to discover it again. 4749 */ 4750 if (ndlp->nlp_state == NLP_STE_ADISC_ISSUE || 4751 ndlp->nlp_state == NLP_STE_PLOGI_ISSUE || 4752 ndlp->nlp_flag & NLP_RCV_PLOGI) 4753 return NULL; 4754 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE); 4755 spin_lock_irq(shost->host_lock); 4756 ndlp->nlp_flag |= NLP_NPR_2B_DISC; 4757 spin_unlock_irq(shost->host_lock); 4758 } 4759 return ndlp; 4760 } 4761 4762 /* Build a list of nodes to discover based on the loopmap */ 4763 void 4764 lpfc_disc_list_loopmap(struct lpfc_vport *vport) 4765 { 4766 struct lpfc_hba *phba = vport->phba; 4767 int j; 4768 uint32_t alpa, index; 4769 4770 if (!lpfc_is_link_up(phba)) 4771 return; 4772 4773 if (phba->fc_topology != LPFC_TOPOLOGY_LOOP) 4774 return; 4775 4776 /* Check for loop map present or not */ 4777 if (phba->alpa_map[0]) { 4778 for (j = 1; j <= phba->alpa_map[0]; j++) { 4779 alpa = phba->alpa_map[j]; 4780 if (((vport->fc_myDID & 0xff) == alpa) || (alpa == 0)) 4781 continue; 4782 lpfc_setup_disc_node(vport, alpa); 4783 } 4784 } else { 4785 /* No alpamap, so try all alpa's */ 4786 for (j = 0; j < FC_MAXLOOP; j++) { 4787 /* If cfg_scan_down is set, start from highest 4788 * ALPA (0xef) to lowest (0x1). 4789 */ 4790 if (vport->cfg_scan_down) 4791 index = j; 4792 else 4793 index = FC_MAXLOOP - j - 1; 4794 alpa = lpfcAlpaArray[index]; 4795 if ((vport->fc_myDID & 0xff) == alpa) 4796 continue; 4797 lpfc_setup_disc_node(vport, alpa); 4798 } 4799 } 4800 return; 4801 } 4802 4803 void 4804 lpfc_issue_clear_la(struct lpfc_hba *phba, struct lpfc_vport *vport) 4805 { 4806 LPFC_MBOXQ_t *mbox; 4807 struct lpfc_sli *psli = &phba->sli; 4808 struct lpfc_sli_ring *extra_ring = &psli->ring[psli->extra_ring]; 4809 struct lpfc_sli_ring *fcp_ring = &psli->ring[psli->fcp_ring]; 4810 struct lpfc_sli_ring *next_ring = &psli->ring[psli->next_ring]; 4811 int rc; 4812 4813 /* 4814 * if it's not a physical port or if we already send 4815 * clear_la then don't send it. 4816 */ 4817 if ((phba->link_state >= LPFC_CLEAR_LA) || 4818 (vport->port_type != LPFC_PHYSICAL_PORT) || 4819 (phba->sli_rev == LPFC_SLI_REV4)) 4820 return; 4821 4822 /* Link up discovery */ 4823 if ((mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL)) != NULL) { 4824 phba->link_state = LPFC_CLEAR_LA; 4825 lpfc_clear_la(phba, mbox); 4826 mbox->mbox_cmpl = lpfc_mbx_cmpl_clear_la; 4827 mbox->vport = vport; 4828 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT); 4829 if (rc == MBX_NOT_FINISHED) { 4830 mempool_free(mbox, phba->mbox_mem_pool); 4831 lpfc_disc_flush_list(vport); 4832 extra_ring->flag &= ~LPFC_STOP_IOCB_EVENT; 4833 fcp_ring->flag &= ~LPFC_STOP_IOCB_EVENT; 4834 next_ring->flag &= ~LPFC_STOP_IOCB_EVENT; 4835 phba->link_state = LPFC_HBA_ERROR; 4836 } 4837 } 4838 } 4839 4840 /* Reg_vpi to tell firmware to resume normal operations */ 4841 void 4842 lpfc_issue_reg_vpi(struct lpfc_hba *phba, struct lpfc_vport *vport) 4843 { 4844 LPFC_MBOXQ_t *regvpimbox; 4845 4846 regvpimbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 4847 if (regvpimbox) { 4848 lpfc_reg_vpi(vport, regvpimbox); 4849 regvpimbox->mbox_cmpl = lpfc_mbx_cmpl_reg_vpi; 4850 regvpimbox->vport = vport; 4851 if (lpfc_sli_issue_mbox(phba, regvpimbox, MBX_NOWAIT) 4852 == MBX_NOT_FINISHED) { 4853 mempool_free(regvpimbox, phba->mbox_mem_pool); 4854 } 4855 } 4856 } 4857 4858 /* Start Link up / RSCN discovery on NPR nodes */ 4859 void 4860 lpfc_disc_start(struct lpfc_vport *vport) 4861 { 4862 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 4863 struct lpfc_hba *phba = vport->phba; 4864 uint32_t num_sent; 4865 uint32_t clear_la_pending; 4866 int did_changed; 4867 4868 if (!lpfc_is_link_up(phba)) 4869 return; 4870 4871 if (phba->link_state == LPFC_CLEAR_LA) 4872 clear_la_pending = 1; 4873 else 4874 clear_la_pending = 0; 4875 4876 if (vport->port_state < LPFC_VPORT_READY) 4877 vport->port_state = LPFC_DISC_AUTH; 4878 4879 lpfc_set_disctmo(vport); 4880 4881 if (vport->fc_prevDID == vport->fc_myDID) 4882 did_changed = 0; 4883 else 4884 did_changed = 1; 4885 4886 vport->fc_prevDID = vport->fc_myDID; 4887 vport->num_disc_nodes = 0; 4888 4889 /* Start Discovery state <hba_state> */ 4890 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, 4891 "0202 Start Discovery hba state x%x " 4892 "Data: x%x x%x x%x\n", 4893 vport->port_state, vport->fc_flag, vport->fc_plogi_cnt, 4894 vport->fc_adisc_cnt); 4895 4896 /* First do ADISCs - if any */ 4897 num_sent = lpfc_els_disc_adisc(vport); 4898 4899 if (num_sent) 4900 return; 4901 4902 /* Register the VPI for SLI3, NON-NPIV only. */ 4903 if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) && 4904 !(vport->fc_flag & FC_PT2PT) && 4905 !(vport->fc_flag & FC_RSCN_MODE) && 4906 (phba->sli_rev < LPFC_SLI_REV4)) { 4907 lpfc_issue_reg_vpi(phba, vport); 4908 return; 4909 } 4910 4911 /* 4912 * For SLI2, we need to set port_state to READY and continue 4913 * discovery. 4914 */ 4915 if (vport->port_state < LPFC_VPORT_READY && !clear_la_pending) { 4916 /* If we get here, there is nothing to ADISC */ 4917 if (vport->port_type == LPFC_PHYSICAL_PORT) 4918 lpfc_issue_clear_la(phba, vport); 4919 4920 if (!(vport->fc_flag & FC_ABORT_DISCOVERY)) { 4921 vport->num_disc_nodes = 0; 4922 /* go thru NPR nodes and issue ELS PLOGIs */ 4923 if (vport->fc_npr_cnt) 4924 lpfc_els_disc_plogi(vport); 4925 4926 if (!vport->num_disc_nodes) { 4927 spin_lock_irq(shost->host_lock); 4928 vport->fc_flag &= ~FC_NDISC_ACTIVE; 4929 spin_unlock_irq(shost->host_lock); 4930 lpfc_can_disctmo(vport); 4931 } 4932 } 4933 vport->port_state = LPFC_VPORT_READY; 4934 } else { 4935 /* Next do PLOGIs - if any */ 4936 num_sent = lpfc_els_disc_plogi(vport); 4937 4938 if (num_sent) 4939 return; 4940 4941 if (vport->fc_flag & FC_RSCN_MODE) { 4942 /* Check to see if more RSCNs came in while we 4943 * were processing this one. 4944 */ 4945 if ((vport->fc_rscn_id_cnt == 0) && 4946 (!(vport->fc_flag & FC_RSCN_DISCOVERY))) { 4947 spin_lock_irq(shost->host_lock); 4948 vport->fc_flag &= ~FC_RSCN_MODE; 4949 spin_unlock_irq(shost->host_lock); 4950 lpfc_can_disctmo(vport); 4951 } else 4952 lpfc_els_handle_rscn(vport); 4953 } 4954 } 4955 return; 4956 } 4957 4958 /* 4959 * Ignore completion for all IOCBs on tx and txcmpl queue for ELS 4960 * ring the match the sppecified nodelist. 4961 */ 4962 static void 4963 lpfc_free_tx(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp) 4964 { 4965 LIST_HEAD(completions); 4966 struct lpfc_sli *psli; 4967 IOCB_t *icmd; 4968 struct lpfc_iocbq *iocb, *next_iocb; 4969 struct lpfc_sli_ring *pring; 4970 4971 psli = &phba->sli; 4972 pring = &psli->ring[LPFC_ELS_RING]; 4973 4974 /* Error matching iocb on txq or txcmplq 4975 * First check the txq. 4976 */ 4977 spin_lock_irq(&phba->hbalock); 4978 list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) { 4979 if (iocb->context1 != ndlp) { 4980 continue; 4981 } 4982 icmd = &iocb->iocb; 4983 if ((icmd->ulpCommand == CMD_ELS_REQUEST64_CR) || 4984 (icmd->ulpCommand == CMD_XMIT_ELS_RSP64_CX)) { 4985 4986 list_move_tail(&iocb->list, &completions); 4987 pring->txq_cnt--; 4988 } 4989 } 4990 4991 /* Next check the txcmplq */ 4992 list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq, list) { 4993 if (iocb->context1 != ndlp) { 4994 continue; 4995 } 4996 icmd = &iocb->iocb; 4997 if (icmd->ulpCommand == CMD_ELS_REQUEST64_CR || 4998 icmd->ulpCommand == CMD_XMIT_ELS_RSP64_CX) { 4999 lpfc_sli_issue_abort_iotag(phba, pring, iocb); 5000 } 5001 } 5002 spin_unlock_irq(&phba->hbalock); 5003 5004 /* Cancel all the IOCBs from the completions list */ 5005 lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT, 5006 IOERR_SLI_ABORTED); 5007 } 5008 5009 static void 5010 lpfc_disc_flush_list(struct lpfc_vport *vport) 5011 { 5012 struct lpfc_nodelist *ndlp, *next_ndlp; 5013 struct lpfc_hba *phba = vport->phba; 5014 5015 if (vport->fc_plogi_cnt || vport->fc_adisc_cnt) { 5016 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, 5017 nlp_listp) { 5018 if (!NLP_CHK_NODE_ACT(ndlp)) 5019 continue; 5020 if (ndlp->nlp_state == NLP_STE_PLOGI_ISSUE || 5021 ndlp->nlp_state == NLP_STE_ADISC_ISSUE) { 5022 lpfc_free_tx(phba, ndlp); 5023 } 5024 } 5025 } 5026 } 5027 5028 void 5029 lpfc_cleanup_discovery_resources(struct lpfc_vport *vport) 5030 { 5031 lpfc_els_flush_rscn(vport); 5032 lpfc_els_flush_cmd(vport); 5033 lpfc_disc_flush_list(vport); 5034 } 5035 5036 /*****************************************************************************/ 5037 /* 5038 * NAME: lpfc_disc_timeout 5039 * 5040 * FUNCTION: Fibre Channel driver discovery timeout routine. 5041 * 5042 * EXECUTION ENVIRONMENT: interrupt only 5043 * 5044 * CALLED FROM: 5045 * Timer function 5046 * 5047 * RETURNS: 5048 * none 5049 */ 5050 /*****************************************************************************/ 5051 void 5052 lpfc_disc_timeout(unsigned long ptr) 5053 { 5054 struct lpfc_vport *vport = (struct lpfc_vport *) ptr; 5055 struct lpfc_hba *phba = vport->phba; 5056 uint32_t tmo_posted; 5057 unsigned long flags = 0; 5058 5059 if (unlikely(!phba)) 5060 return; 5061 5062 spin_lock_irqsave(&vport->work_port_lock, flags); 5063 tmo_posted = vport->work_port_events & WORKER_DISC_TMO; 5064 if (!tmo_posted) 5065 vport->work_port_events |= WORKER_DISC_TMO; 5066 spin_unlock_irqrestore(&vport->work_port_lock, flags); 5067 5068 if (!tmo_posted) 5069 lpfc_worker_wake_up(phba); 5070 return; 5071 } 5072 5073 static void 5074 lpfc_disc_timeout_handler(struct lpfc_vport *vport) 5075 { 5076 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 5077 struct lpfc_hba *phba = vport->phba; 5078 struct lpfc_sli *psli = &phba->sli; 5079 struct lpfc_nodelist *ndlp, *next_ndlp; 5080 LPFC_MBOXQ_t *initlinkmbox; 5081 int rc, clrlaerr = 0; 5082 5083 if (!(vport->fc_flag & FC_DISC_TMO)) 5084 return; 5085 5086 spin_lock_irq(shost->host_lock); 5087 vport->fc_flag &= ~FC_DISC_TMO; 5088 spin_unlock_irq(shost->host_lock); 5089 5090 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, 5091 "disc timeout: state:x%x rtry:x%x flg:x%x", 5092 vport->port_state, vport->fc_ns_retry, vport->fc_flag); 5093 5094 switch (vport->port_state) { 5095 5096 case LPFC_LOCAL_CFG_LINK: 5097 /* port_state is identically LPFC_LOCAL_CFG_LINK while waiting for 5098 * FAN 5099 */ 5100 /* FAN timeout */ 5101 lpfc_printf_vlog(vport, KERN_WARNING, LOG_DISCOVERY, 5102 "0221 FAN timeout\n"); 5103 /* Start discovery by sending FLOGI, clean up old rpis */ 5104 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, 5105 nlp_listp) { 5106 if (!NLP_CHK_NODE_ACT(ndlp)) 5107 continue; 5108 if (ndlp->nlp_state != NLP_STE_NPR_NODE) 5109 continue; 5110 if (ndlp->nlp_type & NLP_FABRIC) { 5111 /* Clean up the ndlp on Fabric connections */ 5112 lpfc_drop_node(vport, ndlp); 5113 5114 } else if (!(ndlp->nlp_flag & NLP_NPR_ADISC)) { 5115 /* Fail outstanding IO now since device 5116 * is marked for PLOGI. 5117 */ 5118 lpfc_unreg_rpi(vport, ndlp); 5119 } 5120 } 5121 if (vport->port_state != LPFC_FLOGI) { 5122 if (phba->sli_rev <= LPFC_SLI_REV3) 5123 lpfc_initial_flogi(vport); 5124 else 5125 lpfc_issue_init_vfi(vport); 5126 return; 5127 } 5128 break; 5129 5130 case LPFC_FDISC: 5131 case LPFC_FLOGI: 5132 /* port_state is identically LPFC_FLOGI while waiting for FLOGI cmpl */ 5133 /* Initial FLOGI timeout */ 5134 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY, 5135 "0222 Initial %s timeout\n", 5136 vport->vpi ? "FDISC" : "FLOGI"); 5137 5138 /* Assume no Fabric and go on with discovery. 5139 * Check for outstanding ELS FLOGI to abort. 5140 */ 5141 5142 /* FLOGI failed, so just use loop map to make discovery list */ 5143 lpfc_disc_list_loopmap(vport); 5144 5145 /* Start discovery */ 5146 lpfc_disc_start(vport); 5147 break; 5148 5149 case LPFC_FABRIC_CFG_LINK: 5150 /* hba_state is identically LPFC_FABRIC_CFG_LINK while waiting for 5151 NameServer login */ 5152 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY, 5153 "0223 Timeout while waiting for " 5154 "NameServer login\n"); 5155 /* Next look for NameServer ndlp */ 5156 ndlp = lpfc_findnode_did(vport, NameServer_DID); 5157 if (ndlp && NLP_CHK_NODE_ACT(ndlp)) 5158 lpfc_els_abort(phba, ndlp); 5159 5160 /* ReStart discovery */ 5161 goto restart_disc; 5162 5163 case LPFC_NS_QRY: 5164 /* Check for wait for NameServer Rsp timeout */ 5165 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY, 5166 "0224 NameServer Query timeout " 5167 "Data: x%x x%x\n", 5168 vport->fc_ns_retry, LPFC_MAX_NS_RETRY); 5169 5170 if (vport->fc_ns_retry < LPFC_MAX_NS_RETRY) { 5171 /* Try it one more time */ 5172 vport->fc_ns_retry++; 5173 rc = lpfc_ns_cmd(vport, SLI_CTNS_GID_FT, 5174 vport->fc_ns_retry, 0); 5175 if (rc == 0) 5176 break; 5177 } 5178 vport->fc_ns_retry = 0; 5179 5180 restart_disc: 5181 /* 5182 * Discovery is over. 5183 * set port_state to PORT_READY if SLI2. 5184 * cmpl_reg_vpi will set port_state to READY for SLI3. 5185 */ 5186 if (phba->sli_rev < LPFC_SLI_REV4) { 5187 if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) 5188 lpfc_issue_reg_vpi(phba, vport); 5189 else { 5190 lpfc_issue_clear_la(phba, vport); 5191 vport->port_state = LPFC_VPORT_READY; 5192 } 5193 } 5194 5195 /* Setup and issue mailbox INITIALIZE LINK command */ 5196 initlinkmbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 5197 if (!initlinkmbox) { 5198 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY, 5199 "0206 Device Discovery " 5200 "completion error\n"); 5201 phba->link_state = LPFC_HBA_ERROR; 5202 break; 5203 } 5204 5205 lpfc_linkdown(phba); 5206 lpfc_init_link(phba, initlinkmbox, phba->cfg_topology, 5207 phba->cfg_link_speed); 5208 initlinkmbox->u.mb.un.varInitLnk.lipsr_AL_PA = 0; 5209 initlinkmbox->vport = vport; 5210 initlinkmbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl; 5211 rc = lpfc_sli_issue_mbox(phba, initlinkmbox, MBX_NOWAIT); 5212 lpfc_set_loopback_flag(phba); 5213 if (rc == MBX_NOT_FINISHED) 5214 mempool_free(initlinkmbox, phba->mbox_mem_pool); 5215 5216 break; 5217 5218 case LPFC_DISC_AUTH: 5219 /* Node Authentication timeout */ 5220 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY, 5221 "0227 Node Authentication timeout\n"); 5222 lpfc_disc_flush_list(vport); 5223 5224 /* 5225 * set port_state to PORT_READY if SLI2. 5226 * cmpl_reg_vpi will set port_state to READY for SLI3. 5227 */ 5228 if (phba->sli_rev < LPFC_SLI_REV4) { 5229 if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) 5230 lpfc_issue_reg_vpi(phba, vport); 5231 else { /* NPIV Not enabled */ 5232 lpfc_issue_clear_la(phba, vport); 5233 vport->port_state = LPFC_VPORT_READY; 5234 } 5235 } 5236 break; 5237 5238 case LPFC_VPORT_READY: 5239 if (vport->fc_flag & FC_RSCN_MODE) { 5240 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY, 5241 "0231 RSCN timeout Data: x%x " 5242 "x%x\n", 5243 vport->fc_ns_retry, LPFC_MAX_NS_RETRY); 5244 5245 /* Cleanup any outstanding ELS commands */ 5246 lpfc_els_flush_cmd(vport); 5247 5248 lpfc_els_flush_rscn(vport); 5249 lpfc_disc_flush_list(vport); 5250 } 5251 break; 5252 5253 default: 5254 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY, 5255 "0273 Unexpected discovery timeout, " 5256 "vport State x%x\n", vport->port_state); 5257 break; 5258 } 5259 5260 switch (phba->link_state) { 5261 case LPFC_CLEAR_LA: 5262 /* CLEAR LA timeout */ 5263 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY, 5264 "0228 CLEAR LA timeout\n"); 5265 clrlaerr = 1; 5266 break; 5267 5268 case LPFC_LINK_UP: 5269 lpfc_issue_clear_la(phba, vport); 5270 /* Drop thru */ 5271 case LPFC_LINK_UNKNOWN: 5272 case LPFC_WARM_START: 5273 case LPFC_INIT_START: 5274 case LPFC_INIT_MBX_CMDS: 5275 case LPFC_LINK_DOWN: 5276 case LPFC_HBA_ERROR: 5277 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY, 5278 "0230 Unexpected timeout, hba link " 5279 "state x%x\n", phba->link_state); 5280 clrlaerr = 1; 5281 break; 5282 5283 case LPFC_HBA_READY: 5284 break; 5285 } 5286 5287 if (clrlaerr) { 5288 lpfc_disc_flush_list(vport); 5289 psli->ring[(psli->extra_ring)].flag &= ~LPFC_STOP_IOCB_EVENT; 5290 psli->ring[(psli->fcp_ring)].flag &= ~LPFC_STOP_IOCB_EVENT; 5291 psli->ring[(psli->next_ring)].flag &= ~LPFC_STOP_IOCB_EVENT; 5292 vport->port_state = LPFC_VPORT_READY; 5293 } 5294 5295 return; 5296 } 5297 5298 /* 5299 * This routine handles processing a NameServer REG_LOGIN mailbox 5300 * command upon completion. It is setup in the LPFC_MBOXQ 5301 * as the completion routine when the command is 5302 * handed off to the SLI layer. 5303 */ 5304 void 5305 lpfc_mbx_cmpl_fdmi_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 5306 { 5307 MAILBOX_t *mb = &pmb->u.mb; 5308 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1); 5309 struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) pmb->context2; 5310 struct lpfc_vport *vport = pmb->vport; 5311 5312 pmb->context1 = NULL; 5313 pmb->context2 = NULL; 5314 5315 if (phba->sli_rev < LPFC_SLI_REV4) 5316 ndlp->nlp_rpi = mb->un.varWords[0]; 5317 ndlp->nlp_flag |= NLP_RPI_REGISTERED; 5318 ndlp->nlp_type |= NLP_FABRIC; 5319 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE); 5320 5321 /* 5322 * Start issuing Fabric-Device Management Interface (FDMI) command to 5323 * 0xfffffa (FDMI well known port) or Delay issuing FDMI command if 5324 * fdmi-on=2 (supporting RPA/hostnmae) 5325 */ 5326 5327 if (vport->cfg_fdmi_on == 1) 5328 lpfc_fdmi_cmd(vport, ndlp, SLI_MGMT_DHBA); 5329 else 5330 mod_timer(&vport->fc_fdmitmo, jiffies + HZ * 60); 5331 5332 /* decrement the node reference count held for this callback 5333 * function. 5334 */ 5335 lpfc_nlp_put(ndlp); 5336 lpfc_mbuf_free(phba, mp->virt, mp->phys); 5337 kfree(mp); 5338 mempool_free(pmb, phba->mbox_mem_pool); 5339 5340 return; 5341 } 5342 5343 static int 5344 lpfc_filter_by_rpi(struct lpfc_nodelist *ndlp, void *param) 5345 { 5346 uint16_t *rpi = param; 5347 5348 /* check for active node */ 5349 if (!NLP_CHK_NODE_ACT(ndlp)) 5350 return 0; 5351 5352 return ndlp->nlp_rpi == *rpi; 5353 } 5354 5355 static int 5356 lpfc_filter_by_wwpn(struct lpfc_nodelist *ndlp, void *param) 5357 { 5358 return memcmp(&ndlp->nlp_portname, param, 5359 sizeof(ndlp->nlp_portname)) == 0; 5360 } 5361 5362 static struct lpfc_nodelist * 5363 __lpfc_find_node(struct lpfc_vport *vport, node_filter filter, void *param) 5364 { 5365 struct lpfc_nodelist *ndlp; 5366 5367 list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) { 5368 if (filter(ndlp, param)) 5369 return ndlp; 5370 } 5371 return NULL; 5372 } 5373 5374 /* 5375 * This routine looks up the ndlp lists for the given RPI. If rpi found it 5376 * returns the node list element pointer else return NULL. 5377 */ 5378 struct lpfc_nodelist * 5379 __lpfc_findnode_rpi(struct lpfc_vport *vport, uint16_t rpi) 5380 { 5381 return __lpfc_find_node(vport, lpfc_filter_by_rpi, &rpi); 5382 } 5383 5384 /* 5385 * This routine looks up the ndlp lists for the given WWPN. If WWPN found it 5386 * returns the node element list pointer else return NULL. 5387 */ 5388 struct lpfc_nodelist * 5389 lpfc_findnode_wwpn(struct lpfc_vport *vport, struct lpfc_name *wwpn) 5390 { 5391 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 5392 struct lpfc_nodelist *ndlp; 5393 5394 spin_lock_irq(shost->host_lock); 5395 ndlp = __lpfc_find_node(vport, lpfc_filter_by_wwpn, wwpn); 5396 spin_unlock_irq(shost->host_lock); 5397 return ndlp; 5398 } 5399 5400 /* 5401 * This routine looks up the ndlp lists for the given RPI. If the rpi 5402 * is found, the routine returns the node element list pointer else 5403 * return NULL. 5404 */ 5405 struct lpfc_nodelist * 5406 lpfc_findnode_rpi(struct lpfc_vport *vport, uint16_t rpi) 5407 { 5408 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 5409 struct lpfc_nodelist *ndlp; 5410 5411 spin_lock_irq(shost->host_lock); 5412 ndlp = __lpfc_findnode_rpi(vport, rpi); 5413 spin_unlock_irq(shost->host_lock); 5414 return ndlp; 5415 } 5416 5417 /** 5418 * lpfc_find_vport_by_vpid - Find a vport on a HBA through vport identifier 5419 * @phba: pointer to lpfc hba data structure. 5420 * @vpi: the physical host virtual N_Port identifier. 5421 * 5422 * This routine finds a vport on a HBA (referred by @phba) through a 5423 * @vpi. The function walks the HBA's vport list and returns the address 5424 * of the vport with the matching @vpi. 5425 * 5426 * Return code 5427 * NULL - No vport with the matching @vpi found 5428 * Otherwise - Address to the vport with the matching @vpi. 5429 **/ 5430 struct lpfc_vport * 5431 lpfc_find_vport_by_vpid(struct lpfc_hba *phba, uint16_t vpi) 5432 { 5433 struct lpfc_vport *vport; 5434 unsigned long flags; 5435 int i = 0; 5436 5437 /* The physical ports are always vpi 0 - translate is unnecessary. */ 5438 if (vpi > 0) { 5439 /* 5440 * Translate the physical vpi to the logical vpi. The 5441 * vport stores the logical vpi. 5442 */ 5443 for (i = 0; i < phba->max_vpi; i++) { 5444 if (vpi == phba->vpi_ids[i]) 5445 break; 5446 } 5447 5448 if (i >= phba->max_vpi) { 5449 lpfc_printf_log(phba, KERN_ERR, LOG_ELS, 5450 "2936 Could not find Vport mapped " 5451 "to vpi %d\n", vpi); 5452 return NULL; 5453 } 5454 } 5455 5456 spin_lock_irqsave(&phba->hbalock, flags); 5457 list_for_each_entry(vport, &phba->port_list, listentry) { 5458 if (vport->vpi == i) { 5459 spin_unlock_irqrestore(&phba->hbalock, flags); 5460 return vport; 5461 } 5462 } 5463 spin_unlock_irqrestore(&phba->hbalock, flags); 5464 return NULL; 5465 } 5466 5467 void 5468 lpfc_nlp_init(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 5469 uint32_t did) 5470 { 5471 memset(ndlp, 0, sizeof (struct lpfc_nodelist)); 5472 5473 lpfc_initialize_node(vport, ndlp, did); 5474 INIT_LIST_HEAD(&ndlp->nlp_listp); 5475 5476 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE, 5477 "node init: did:x%x", 5478 ndlp->nlp_DID, 0, 0); 5479 5480 return; 5481 } 5482 5483 /* This routine releases all resources associated with a specifc NPort's ndlp 5484 * and mempool_free's the nodelist. 5485 */ 5486 static void 5487 lpfc_nlp_release(struct kref *kref) 5488 { 5489 struct lpfc_hba *phba; 5490 unsigned long flags; 5491 struct lpfc_nodelist *ndlp = container_of(kref, struct lpfc_nodelist, 5492 kref); 5493 5494 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE, 5495 "node release: did:x%x flg:x%x type:x%x", 5496 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type); 5497 5498 lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_NODE, 5499 "0279 lpfc_nlp_release: ndlp:x%p did %x " 5500 "usgmap:x%x refcnt:%d\n", 5501 (void *)ndlp, ndlp->nlp_DID, ndlp->nlp_usg_map, 5502 atomic_read(&ndlp->kref.refcount)); 5503 5504 /* remove ndlp from action. */ 5505 lpfc_nlp_remove(ndlp->vport, ndlp); 5506 5507 /* clear the ndlp active flag for all release cases */ 5508 phba = ndlp->phba; 5509 spin_lock_irqsave(&phba->ndlp_lock, flags); 5510 NLP_CLR_NODE_ACT(ndlp); 5511 spin_unlock_irqrestore(&phba->ndlp_lock, flags); 5512 if (phba->sli_rev == LPFC_SLI_REV4) 5513 lpfc_sli4_free_rpi(phba, ndlp->nlp_rpi); 5514 5515 /* free ndlp memory for final ndlp release */ 5516 if (NLP_CHK_FREE_REQ(ndlp)) { 5517 kfree(ndlp->lat_data); 5518 mempool_free(ndlp, ndlp->phba->nlp_mem_pool); 5519 } 5520 } 5521 5522 /* This routine bumps the reference count for a ndlp structure to ensure 5523 * that one discovery thread won't free a ndlp while another discovery thread 5524 * is using it. 5525 */ 5526 struct lpfc_nodelist * 5527 lpfc_nlp_get(struct lpfc_nodelist *ndlp) 5528 { 5529 struct lpfc_hba *phba; 5530 unsigned long flags; 5531 5532 if (ndlp) { 5533 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE, 5534 "node get: did:x%x flg:x%x refcnt:x%x", 5535 ndlp->nlp_DID, ndlp->nlp_flag, 5536 atomic_read(&ndlp->kref.refcount)); 5537 /* The check of ndlp usage to prevent incrementing the 5538 * ndlp reference count that is in the process of being 5539 * released. 5540 */ 5541 phba = ndlp->phba; 5542 spin_lock_irqsave(&phba->ndlp_lock, flags); 5543 if (!NLP_CHK_NODE_ACT(ndlp) || NLP_CHK_FREE_ACK(ndlp)) { 5544 spin_unlock_irqrestore(&phba->ndlp_lock, flags); 5545 lpfc_printf_vlog(ndlp->vport, KERN_WARNING, LOG_NODE, 5546 "0276 lpfc_nlp_get: ndlp:x%p " 5547 "usgmap:x%x refcnt:%d\n", 5548 (void *)ndlp, ndlp->nlp_usg_map, 5549 atomic_read(&ndlp->kref.refcount)); 5550 return NULL; 5551 } else 5552 kref_get(&ndlp->kref); 5553 spin_unlock_irqrestore(&phba->ndlp_lock, flags); 5554 } 5555 return ndlp; 5556 } 5557 5558 /* This routine decrements the reference count for a ndlp structure. If the 5559 * count goes to 0, this indicates the the associated nodelist should be 5560 * freed. Returning 1 indicates the ndlp resource has been released; on the 5561 * other hand, returning 0 indicates the ndlp resource has not been released 5562 * yet. 5563 */ 5564 int 5565 lpfc_nlp_put(struct lpfc_nodelist *ndlp) 5566 { 5567 struct lpfc_hba *phba; 5568 unsigned long flags; 5569 5570 if (!ndlp) 5571 return 1; 5572 5573 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE, 5574 "node put: did:x%x flg:x%x refcnt:x%x", 5575 ndlp->nlp_DID, ndlp->nlp_flag, 5576 atomic_read(&ndlp->kref.refcount)); 5577 phba = ndlp->phba; 5578 spin_lock_irqsave(&phba->ndlp_lock, flags); 5579 /* Check the ndlp memory free acknowledge flag to avoid the 5580 * possible race condition that kref_put got invoked again 5581 * after previous one has done ndlp memory free. 5582 */ 5583 if (NLP_CHK_FREE_ACK(ndlp)) { 5584 spin_unlock_irqrestore(&phba->ndlp_lock, flags); 5585 lpfc_printf_vlog(ndlp->vport, KERN_WARNING, LOG_NODE, 5586 "0274 lpfc_nlp_put: ndlp:x%p " 5587 "usgmap:x%x refcnt:%d\n", 5588 (void *)ndlp, ndlp->nlp_usg_map, 5589 atomic_read(&ndlp->kref.refcount)); 5590 return 1; 5591 } 5592 /* Check the ndlp inactivate log flag to avoid the possible 5593 * race condition that kref_put got invoked again after ndlp 5594 * is already in inactivating state. 5595 */ 5596 if (NLP_CHK_IACT_REQ(ndlp)) { 5597 spin_unlock_irqrestore(&phba->ndlp_lock, flags); 5598 lpfc_printf_vlog(ndlp->vport, KERN_WARNING, LOG_NODE, 5599 "0275 lpfc_nlp_put: ndlp:x%p " 5600 "usgmap:x%x refcnt:%d\n", 5601 (void *)ndlp, ndlp->nlp_usg_map, 5602 atomic_read(&ndlp->kref.refcount)); 5603 return 1; 5604 } 5605 /* For last put, mark the ndlp usage flags to make sure no 5606 * other kref_get and kref_put on the same ndlp shall get 5607 * in between the process when the final kref_put has been 5608 * invoked on this ndlp. 5609 */ 5610 if (atomic_read(&ndlp->kref.refcount) == 1) { 5611 /* Indicate ndlp is put to inactive state. */ 5612 NLP_SET_IACT_REQ(ndlp); 5613 /* Acknowledge ndlp memory free has been seen. */ 5614 if (NLP_CHK_FREE_REQ(ndlp)) 5615 NLP_SET_FREE_ACK(ndlp); 5616 } 5617 spin_unlock_irqrestore(&phba->ndlp_lock, flags); 5618 /* Note, the kref_put returns 1 when decrementing a reference 5619 * count that was 1, it invokes the release callback function, 5620 * but it still left the reference count as 1 (not actually 5621 * performs the last decrementation). Otherwise, it actually 5622 * decrements the reference count and returns 0. 5623 */ 5624 return kref_put(&ndlp->kref, lpfc_nlp_release); 5625 } 5626 5627 /* This routine free's the specified nodelist if it is not in use 5628 * by any other discovery thread. This routine returns 1 if the 5629 * ndlp has been freed. A return value of 0 indicates the ndlp is 5630 * not yet been released. 5631 */ 5632 int 5633 lpfc_nlp_not_used(struct lpfc_nodelist *ndlp) 5634 { 5635 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE, 5636 "node not used: did:x%x flg:x%x refcnt:x%x", 5637 ndlp->nlp_DID, ndlp->nlp_flag, 5638 atomic_read(&ndlp->kref.refcount)); 5639 if (atomic_read(&ndlp->kref.refcount) == 1) 5640 if (lpfc_nlp_put(ndlp)) 5641 return 1; 5642 return 0; 5643 } 5644 5645 /** 5646 * lpfc_fcf_inuse - Check if FCF can be unregistered. 5647 * @phba: Pointer to hba context object. 5648 * 5649 * This function iterate through all FC nodes associated 5650 * will all vports to check if there is any node with 5651 * fc_rports associated with it. If there is an fc_rport 5652 * associated with the node, then the node is either in 5653 * discovered state or its devloss_timer is pending. 5654 */ 5655 static int 5656 lpfc_fcf_inuse(struct lpfc_hba *phba) 5657 { 5658 struct lpfc_vport **vports; 5659 int i, ret = 0; 5660 struct lpfc_nodelist *ndlp; 5661 struct Scsi_Host *shost; 5662 5663 vports = lpfc_create_vport_work_array(phba); 5664 5665 /* If driver cannot allocate memory, indicate fcf is in use */ 5666 if (!vports) 5667 return 1; 5668 5669 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) { 5670 shost = lpfc_shost_from_vport(vports[i]); 5671 spin_lock_irq(shost->host_lock); 5672 /* 5673 * IF the CVL_RCVD bit is not set then we have sent the 5674 * flogi. 5675 * If dev_loss fires while we are waiting we do not want to 5676 * unreg the fcf. 5677 */ 5678 if (!(vports[i]->fc_flag & FC_VPORT_CVL_RCVD)) { 5679 spin_unlock_irq(shost->host_lock); 5680 ret = 1; 5681 goto out; 5682 } 5683 list_for_each_entry(ndlp, &vports[i]->fc_nodes, nlp_listp) { 5684 if (NLP_CHK_NODE_ACT(ndlp) && ndlp->rport && 5685 (ndlp->rport->roles & FC_RPORT_ROLE_FCP_TARGET)) { 5686 ret = 1; 5687 spin_unlock_irq(shost->host_lock); 5688 goto out; 5689 } else if (ndlp->nlp_flag & NLP_RPI_REGISTERED) { 5690 ret = 1; 5691 lpfc_printf_log(phba, KERN_INFO, LOG_ELS, 5692 "2624 RPI %x DID %x flag %x " 5693 "still logged in\n", 5694 ndlp->nlp_rpi, ndlp->nlp_DID, 5695 ndlp->nlp_flag); 5696 } 5697 } 5698 spin_unlock_irq(shost->host_lock); 5699 } 5700 out: 5701 lpfc_destroy_vport_work_array(phba, vports); 5702 return ret; 5703 } 5704 5705 /** 5706 * lpfc_unregister_vfi_cmpl - Completion handler for unreg vfi. 5707 * @phba: Pointer to hba context object. 5708 * @mboxq: Pointer to mailbox object. 5709 * 5710 * This function frees memory associated with the mailbox command. 5711 */ 5712 void 5713 lpfc_unregister_vfi_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq) 5714 { 5715 struct lpfc_vport *vport = mboxq->vport; 5716 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 5717 5718 if (mboxq->u.mb.mbxStatus) { 5719 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY|LOG_MBOX, 5720 "2555 UNREG_VFI mbxStatus error x%x " 5721 "HBA state x%x\n", 5722 mboxq->u.mb.mbxStatus, vport->port_state); 5723 } 5724 spin_lock_irq(shost->host_lock); 5725 phba->pport->fc_flag &= ~FC_VFI_REGISTERED; 5726 spin_unlock_irq(shost->host_lock); 5727 mempool_free(mboxq, phba->mbox_mem_pool); 5728 return; 5729 } 5730 5731 /** 5732 * lpfc_unregister_fcfi_cmpl - Completion handler for unreg fcfi. 5733 * @phba: Pointer to hba context object. 5734 * @mboxq: Pointer to mailbox object. 5735 * 5736 * This function frees memory associated with the mailbox command. 5737 */ 5738 static void 5739 lpfc_unregister_fcfi_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq) 5740 { 5741 struct lpfc_vport *vport = mboxq->vport; 5742 5743 if (mboxq->u.mb.mbxStatus) { 5744 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY|LOG_MBOX, 5745 "2550 UNREG_FCFI mbxStatus error x%x " 5746 "HBA state x%x\n", 5747 mboxq->u.mb.mbxStatus, vport->port_state); 5748 } 5749 mempool_free(mboxq, phba->mbox_mem_pool); 5750 return; 5751 } 5752 5753 /** 5754 * lpfc_unregister_fcf_prep - Unregister fcf record preparation 5755 * @phba: Pointer to hba context object. 5756 * 5757 * This function prepare the HBA for unregistering the currently registered 5758 * FCF from the HBA. It performs unregistering, in order, RPIs, VPIs, and 5759 * VFIs. 5760 */ 5761 int 5762 lpfc_unregister_fcf_prep(struct lpfc_hba *phba) 5763 { 5764 struct lpfc_vport **vports; 5765 struct lpfc_nodelist *ndlp; 5766 struct Scsi_Host *shost; 5767 int i, rc; 5768 5769 /* Unregister RPIs */ 5770 if (lpfc_fcf_inuse(phba)) 5771 lpfc_unreg_hba_rpis(phba); 5772 5773 /* At this point, all discovery is aborted */ 5774 phba->pport->port_state = LPFC_VPORT_UNKNOWN; 5775 5776 /* Unregister VPIs */ 5777 vports = lpfc_create_vport_work_array(phba); 5778 if (vports && (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)) 5779 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) { 5780 /* Stop FLOGI/FDISC retries */ 5781 ndlp = lpfc_findnode_did(vports[i], Fabric_DID); 5782 if (ndlp) 5783 lpfc_cancel_retry_delay_tmo(vports[i], ndlp); 5784 lpfc_cleanup_pending_mbox(vports[i]); 5785 if (phba->sli_rev == LPFC_SLI_REV4) 5786 lpfc_sli4_unreg_all_rpis(vports[i]); 5787 lpfc_mbx_unreg_vpi(vports[i]); 5788 shost = lpfc_shost_from_vport(vports[i]); 5789 spin_lock_irq(shost->host_lock); 5790 vports[i]->fc_flag |= FC_VPORT_NEEDS_INIT_VPI; 5791 vports[i]->vpi_state &= ~LPFC_VPI_REGISTERED; 5792 spin_unlock_irq(shost->host_lock); 5793 } 5794 lpfc_destroy_vport_work_array(phba, vports); 5795 5796 /* Cleanup any outstanding ELS commands */ 5797 lpfc_els_flush_all_cmd(phba); 5798 5799 /* Unregister the physical port VFI */ 5800 rc = lpfc_issue_unreg_vfi(phba->pport); 5801 return rc; 5802 } 5803 5804 /** 5805 * lpfc_sli4_unregister_fcf - Unregister currently registered FCF record 5806 * @phba: Pointer to hba context object. 5807 * 5808 * This function issues synchronous unregister FCF mailbox command to HBA to 5809 * unregister the currently registered FCF record. The driver does not reset 5810 * the driver FCF usage state flags. 5811 * 5812 * Return 0 if successfully issued, none-zero otherwise. 5813 */ 5814 int 5815 lpfc_sli4_unregister_fcf(struct lpfc_hba *phba) 5816 { 5817 LPFC_MBOXQ_t *mbox; 5818 int rc; 5819 5820 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 5821 if (!mbox) { 5822 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY|LOG_MBOX, 5823 "2551 UNREG_FCFI mbox allocation failed" 5824 "HBA state x%x\n", phba->pport->port_state); 5825 return -ENOMEM; 5826 } 5827 lpfc_unreg_fcfi(mbox, phba->fcf.fcfi); 5828 mbox->vport = phba->pport; 5829 mbox->mbox_cmpl = lpfc_unregister_fcfi_cmpl; 5830 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT); 5831 5832 if (rc == MBX_NOT_FINISHED) { 5833 lpfc_printf_log(phba, KERN_ERR, LOG_SLI, 5834 "2552 Unregister FCFI command failed rc x%x " 5835 "HBA state x%x\n", 5836 rc, phba->pport->port_state); 5837 return -EINVAL; 5838 } 5839 return 0; 5840 } 5841 5842 /** 5843 * lpfc_unregister_fcf_rescan - Unregister currently registered fcf and rescan 5844 * @phba: Pointer to hba context object. 5845 * 5846 * This function unregisters the currently reigstered FCF. This function 5847 * also tries to find another FCF for discovery by rescan the HBA FCF table. 5848 */ 5849 void 5850 lpfc_unregister_fcf_rescan(struct lpfc_hba *phba) 5851 { 5852 int rc; 5853 5854 /* Preparation for unregistering fcf */ 5855 rc = lpfc_unregister_fcf_prep(phba); 5856 if (rc) { 5857 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY, 5858 "2748 Failed to prepare for unregistering " 5859 "HBA's FCF record: rc=%d\n", rc); 5860 return; 5861 } 5862 5863 /* Now, unregister FCF record and reset HBA FCF state */ 5864 rc = lpfc_sli4_unregister_fcf(phba); 5865 if (rc) 5866 return; 5867 /* Reset HBA FCF states after successful unregister FCF */ 5868 phba->fcf.fcf_flag = 0; 5869 phba->fcf.current_rec.flag = 0; 5870 5871 /* 5872 * If driver is not unloading, check if there is any other 5873 * FCF record that can be used for discovery. 5874 */ 5875 if ((phba->pport->load_flag & FC_UNLOADING) || 5876 (phba->link_state < LPFC_LINK_UP)) 5877 return; 5878 5879 /* This is considered as the initial FCF discovery scan */ 5880 spin_lock_irq(&phba->hbalock); 5881 phba->fcf.fcf_flag |= FCF_INIT_DISC; 5882 spin_unlock_irq(&phba->hbalock); 5883 5884 /* Reset FCF roundrobin bmask for new discovery */ 5885 lpfc_sli4_clear_fcf_rr_bmask(phba); 5886 5887 rc = lpfc_sli4_fcf_scan_read_fcf_rec(phba, LPFC_FCOE_FCF_GET_FIRST); 5888 5889 if (rc) { 5890 spin_lock_irq(&phba->hbalock); 5891 phba->fcf.fcf_flag &= ~FCF_INIT_DISC; 5892 spin_unlock_irq(&phba->hbalock); 5893 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY|LOG_MBOX, 5894 "2553 lpfc_unregister_unused_fcf failed " 5895 "to read FCF record HBA state x%x\n", 5896 phba->pport->port_state); 5897 } 5898 } 5899 5900 /** 5901 * lpfc_unregister_fcf - Unregister the currently registered fcf record 5902 * @phba: Pointer to hba context object. 5903 * 5904 * This function just unregisters the currently reigstered FCF. It does not 5905 * try to find another FCF for discovery. 5906 */ 5907 void 5908 lpfc_unregister_fcf(struct lpfc_hba *phba) 5909 { 5910 int rc; 5911 5912 /* Preparation for unregistering fcf */ 5913 rc = lpfc_unregister_fcf_prep(phba); 5914 if (rc) { 5915 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY, 5916 "2749 Failed to prepare for unregistering " 5917 "HBA's FCF record: rc=%d\n", rc); 5918 return; 5919 } 5920 5921 /* Now, unregister FCF record and reset HBA FCF state */ 5922 rc = lpfc_sli4_unregister_fcf(phba); 5923 if (rc) 5924 return; 5925 /* Set proper HBA FCF states after successful unregister FCF */ 5926 spin_lock_irq(&phba->hbalock); 5927 phba->fcf.fcf_flag &= ~FCF_REGISTERED; 5928 spin_unlock_irq(&phba->hbalock); 5929 } 5930 5931 /** 5932 * lpfc_unregister_unused_fcf - Unregister FCF if all devices are disconnected. 5933 * @phba: Pointer to hba context object. 5934 * 5935 * This function check if there are any connected remote port for the FCF and 5936 * if all the devices are disconnected, this function unregister FCFI. 5937 * This function also tries to use another FCF for discovery. 5938 */ 5939 void 5940 lpfc_unregister_unused_fcf(struct lpfc_hba *phba) 5941 { 5942 /* 5943 * If HBA is not running in FIP mode, if HBA does not support 5944 * FCoE, if FCF discovery is ongoing, or if FCF has not been 5945 * registered, do nothing. 5946 */ 5947 spin_lock_irq(&phba->hbalock); 5948 if (!(phba->hba_flag & HBA_FCOE_MODE) || 5949 !(phba->fcf.fcf_flag & FCF_REGISTERED) || 5950 !(phba->hba_flag & HBA_FIP_SUPPORT) || 5951 (phba->fcf.fcf_flag & FCF_DISCOVERY) || 5952 (phba->pport->port_state == LPFC_FLOGI)) { 5953 spin_unlock_irq(&phba->hbalock); 5954 return; 5955 } 5956 spin_unlock_irq(&phba->hbalock); 5957 5958 if (lpfc_fcf_inuse(phba)) 5959 return; 5960 5961 lpfc_unregister_fcf_rescan(phba); 5962 } 5963 5964 /** 5965 * lpfc_read_fcf_conn_tbl - Create driver FCF connection table. 5966 * @phba: Pointer to hba context object. 5967 * @buff: Buffer containing the FCF connection table as in the config 5968 * region. 5969 * This function create driver data structure for the FCF connection 5970 * record table read from config region 23. 5971 */ 5972 static void 5973 lpfc_read_fcf_conn_tbl(struct lpfc_hba *phba, 5974 uint8_t *buff) 5975 { 5976 struct lpfc_fcf_conn_entry *conn_entry, *next_conn_entry; 5977 struct lpfc_fcf_conn_hdr *conn_hdr; 5978 struct lpfc_fcf_conn_rec *conn_rec; 5979 uint32_t record_count; 5980 int i; 5981 5982 /* Free the current connect table */ 5983 list_for_each_entry_safe(conn_entry, next_conn_entry, 5984 &phba->fcf_conn_rec_list, list) { 5985 list_del_init(&conn_entry->list); 5986 kfree(conn_entry); 5987 } 5988 5989 conn_hdr = (struct lpfc_fcf_conn_hdr *) buff; 5990 record_count = conn_hdr->length * sizeof(uint32_t)/ 5991 sizeof(struct lpfc_fcf_conn_rec); 5992 5993 conn_rec = (struct lpfc_fcf_conn_rec *) 5994 (buff + sizeof(struct lpfc_fcf_conn_hdr)); 5995 5996 for (i = 0; i < record_count; i++) { 5997 if (!(conn_rec[i].flags & FCFCNCT_VALID)) 5998 continue; 5999 conn_entry = kzalloc(sizeof(struct lpfc_fcf_conn_entry), 6000 GFP_KERNEL); 6001 if (!conn_entry) { 6002 lpfc_printf_log(phba, KERN_ERR, LOG_INIT, 6003 "2566 Failed to allocate connection" 6004 " table entry\n"); 6005 return; 6006 } 6007 6008 memcpy(&conn_entry->conn_rec, &conn_rec[i], 6009 sizeof(struct lpfc_fcf_conn_rec)); 6010 conn_entry->conn_rec.vlan_tag = 6011 le16_to_cpu(conn_entry->conn_rec.vlan_tag) & 0xFFF; 6012 conn_entry->conn_rec.flags = 6013 le16_to_cpu(conn_entry->conn_rec.flags); 6014 list_add_tail(&conn_entry->list, 6015 &phba->fcf_conn_rec_list); 6016 } 6017 } 6018 6019 /** 6020 * lpfc_read_fcoe_param - Read FCoe parameters from conf region.. 6021 * @phba: Pointer to hba context object. 6022 * @buff: Buffer containing the FCoE parameter data structure. 6023 * 6024 * This function update driver data structure with config 6025 * parameters read from config region 23. 6026 */ 6027 static void 6028 lpfc_read_fcoe_param(struct lpfc_hba *phba, 6029 uint8_t *buff) 6030 { 6031 struct lpfc_fip_param_hdr *fcoe_param_hdr; 6032 struct lpfc_fcoe_params *fcoe_param; 6033 6034 fcoe_param_hdr = (struct lpfc_fip_param_hdr *) 6035 buff; 6036 fcoe_param = (struct lpfc_fcoe_params *) 6037 (buff + sizeof(struct lpfc_fip_param_hdr)); 6038 6039 if ((fcoe_param_hdr->parm_version != FIPP_VERSION) || 6040 (fcoe_param_hdr->length != FCOE_PARAM_LENGTH)) 6041 return; 6042 6043 if (fcoe_param_hdr->parm_flags & FIPP_VLAN_VALID) { 6044 phba->valid_vlan = 1; 6045 phba->vlan_id = le16_to_cpu(fcoe_param->vlan_tag) & 6046 0xFFF; 6047 } 6048 6049 phba->fc_map[0] = fcoe_param->fc_map[0]; 6050 phba->fc_map[1] = fcoe_param->fc_map[1]; 6051 phba->fc_map[2] = fcoe_param->fc_map[2]; 6052 return; 6053 } 6054 6055 /** 6056 * lpfc_get_rec_conf23 - Get a record type in config region data. 6057 * @buff: Buffer containing config region 23 data. 6058 * @size: Size of the data buffer. 6059 * @rec_type: Record type to be searched. 6060 * 6061 * This function searches config region data to find the beginning 6062 * of the record specified by record_type. If record found, this 6063 * function return pointer to the record else return NULL. 6064 */ 6065 static uint8_t * 6066 lpfc_get_rec_conf23(uint8_t *buff, uint32_t size, uint8_t rec_type) 6067 { 6068 uint32_t offset = 0, rec_length; 6069 6070 if ((buff[0] == LPFC_REGION23_LAST_REC) || 6071 (size < sizeof(uint32_t))) 6072 return NULL; 6073 6074 rec_length = buff[offset + 1]; 6075 6076 /* 6077 * One TLV record has one word header and number of data words 6078 * specified in the rec_length field of the record header. 6079 */ 6080 while ((offset + rec_length * sizeof(uint32_t) + sizeof(uint32_t)) 6081 <= size) { 6082 if (buff[offset] == rec_type) 6083 return &buff[offset]; 6084 6085 if (buff[offset] == LPFC_REGION23_LAST_REC) 6086 return NULL; 6087 6088 offset += rec_length * sizeof(uint32_t) + sizeof(uint32_t); 6089 rec_length = buff[offset + 1]; 6090 } 6091 return NULL; 6092 } 6093 6094 /** 6095 * lpfc_parse_fcoe_conf - Parse FCoE config data read from config region 23. 6096 * @phba: Pointer to lpfc_hba data structure. 6097 * @buff: Buffer containing config region 23 data. 6098 * @size: Size of the data buffer. 6099 * 6100 * This function parses the FCoE config parameters in config region 23 and 6101 * populate driver data structure with the parameters. 6102 */ 6103 void 6104 lpfc_parse_fcoe_conf(struct lpfc_hba *phba, 6105 uint8_t *buff, 6106 uint32_t size) 6107 { 6108 uint32_t offset = 0, rec_length; 6109 uint8_t *rec_ptr; 6110 6111 /* 6112 * If data size is less than 2 words signature and version cannot be 6113 * verified. 6114 */ 6115 if (size < 2*sizeof(uint32_t)) 6116 return; 6117 6118 /* Check the region signature first */ 6119 if (memcmp(buff, LPFC_REGION23_SIGNATURE, 4)) { 6120 lpfc_printf_log(phba, KERN_ERR, LOG_INIT, 6121 "2567 Config region 23 has bad signature\n"); 6122 return; 6123 } 6124 6125 offset += 4; 6126 6127 /* Check the data structure version */ 6128 if (buff[offset] != LPFC_REGION23_VERSION) { 6129 lpfc_printf_log(phba, KERN_ERR, LOG_INIT, 6130 "2568 Config region 23 has bad version\n"); 6131 return; 6132 } 6133 offset += 4; 6134 6135 rec_length = buff[offset + 1]; 6136 6137 /* Read FCoE param record */ 6138 rec_ptr = lpfc_get_rec_conf23(&buff[offset], 6139 size - offset, FCOE_PARAM_TYPE); 6140 if (rec_ptr) 6141 lpfc_read_fcoe_param(phba, rec_ptr); 6142 6143 /* Read FCF connection table */ 6144 rec_ptr = lpfc_get_rec_conf23(&buff[offset], 6145 size - offset, FCOE_CONN_TBL_TYPE); 6146 if (rec_ptr) 6147 lpfc_read_fcf_conn_tbl(phba, rec_ptr); 6148 6149 } 6150