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 lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_NODE, 127 "3181 dev_loss_callbk x%06x, rport %p flg x%x\n", 128 ndlp->nlp_DID, ndlp->rport, ndlp->nlp_flag); 129 130 /* Don't defer this if we are in the process of deleting the vport 131 * or unloading the driver. The unload will cleanup the node 132 * appropriately we just need to cleanup the ndlp rport info here. 133 */ 134 if (vport->load_flag & FC_UNLOADING) { 135 put_node = rdata->pnode != NULL; 136 put_rport = ndlp->rport != NULL; 137 rdata->pnode = NULL; 138 ndlp->rport = NULL; 139 if (put_node) 140 lpfc_nlp_put(ndlp); 141 if (put_rport) 142 put_device(&rport->dev); 143 return; 144 } 145 146 if (ndlp->nlp_state == NLP_STE_MAPPED_NODE) 147 return; 148 149 if (ndlp->nlp_type & NLP_FABRIC) { 150 151 /* If the WWPN of the rport and ndlp don't match, ignore it */ 152 if (rport->port_name != wwn_to_u64(ndlp->nlp_portname.u.wwn)) { 153 put_device(&rport->dev); 154 return; 155 } 156 } 157 158 evtp = &ndlp->dev_loss_evt; 159 160 if (!list_empty(&evtp->evt_listp)) 161 return; 162 163 evtp->evt_arg1 = lpfc_nlp_get(ndlp); 164 165 spin_lock_irq(&phba->hbalock); 166 /* We need to hold the node by incrementing the reference 167 * count until this queued work is done 168 */ 169 if (evtp->evt_arg1) { 170 evtp->evt = LPFC_EVT_DEV_LOSS; 171 list_add_tail(&evtp->evt_listp, &phba->work_list); 172 lpfc_worker_wake_up(phba); 173 } 174 spin_unlock_irq(&phba->hbalock); 175 176 return; 177 } 178 179 /** 180 * lpfc_dev_loss_tmo_handler - Remote node devloss timeout handler 181 * @ndlp: Pointer to remote node object. 182 * 183 * This function is called from the worker thread when devloss timeout timer 184 * expires. For SLI4 host, this routine shall return 1 when at lease one 185 * remote node, including this @ndlp, is still in use of FCF; otherwise, this 186 * routine shall return 0 when there is no remote node is still in use of FCF 187 * when devloss timeout happened to this @ndlp. 188 **/ 189 static int 190 lpfc_dev_loss_tmo_handler(struct lpfc_nodelist *ndlp) 191 { 192 struct lpfc_rport_data *rdata; 193 struct fc_rport *rport; 194 struct lpfc_vport *vport; 195 struct lpfc_hba *phba; 196 uint8_t *name; 197 int put_node; 198 int put_rport; 199 int warn_on = 0; 200 int fcf_inuse = 0; 201 202 rport = ndlp->rport; 203 204 if (!rport) 205 return fcf_inuse; 206 207 rdata = rport->dd_data; 208 name = (uint8_t *) &ndlp->nlp_portname; 209 vport = ndlp->vport; 210 phba = vport->phba; 211 212 if (phba->sli_rev == LPFC_SLI_REV4) 213 fcf_inuse = lpfc_fcf_inuse(phba); 214 215 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT, 216 "rport devlosstmo:did:x%x type:x%x id:x%x", 217 ndlp->nlp_DID, ndlp->nlp_type, rport->scsi_target_id); 218 219 lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_NODE, 220 "3182 dev_loss_tmo_handler x%06x, rport %p flg x%x\n", 221 ndlp->nlp_DID, ndlp->rport, ndlp->nlp_flag); 222 223 /* Don't defer this if we are in the process of deleting the vport 224 * or unloading the driver. The unload will cleanup the node 225 * appropriately we just need to cleanup the ndlp rport info here. 226 */ 227 if (vport->load_flag & FC_UNLOADING) { 228 if (ndlp->nlp_sid != NLP_NO_SID) { 229 /* flush the target */ 230 lpfc_sli_abort_iocb(vport, 231 &phba->sli.ring[phba->sli.fcp_ring], 232 ndlp->nlp_sid, 0, LPFC_CTX_TGT); 233 } 234 put_node = rdata->pnode != NULL; 235 put_rport = ndlp->rport != NULL; 236 rdata->pnode = NULL; 237 ndlp->rport = NULL; 238 if (put_node) 239 lpfc_nlp_put(ndlp); 240 if (put_rport) 241 put_device(&rport->dev); 242 return fcf_inuse; 243 } 244 245 if (ndlp->nlp_state == NLP_STE_MAPPED_NODE) { 246 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, 247 "0284 Devloss timeout Ignored on " 248 "WWPN %x:%x:%x:%x:%x:%x:%x:%x " 249 "NPort x%x\n", 250 *name, *(name+1), *(name+2), *(name+3), 251 *(name+4), *(name+5), *(name+6), *(name+7), 252 ndlp->nlp_DID); 253 return fcf_inuse; 254 } 255 256 if (ndlp->nlp_type & NLP_FABRIC) { 257 /* We will clean up these Nodes in linkup */ 258 put_node = rdata->pnode != NULL; 259 put_rport = ndlp->rport != NULL; 260 rdata->pnode = NULL; 261 ndlp->rport = NULL; 262 if (put_node) 263 lpfc_nlp_put(ndlp); 264 if (put_rport) 265 put_device(&rport->dev); 266 return fcf_inuse; 267 } 268 269 if (ndlp->nlp_sid != NLP_NO_SID) { 270 warn_on = 1; 271 /* flush the target */ 272 lpfc_sli_abort_iocb(vport, &phba->sli.ring[phba->sli.fcp_ring], 273 ndlp->nlp_sid, 0, LPFC_CTX_TGT); 274 } 275 276 if (warn_on) { 277 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY, 278 "0203 Devloss timeout on " 279 "WWPN %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x " 280 "NPort x%06x Data: x%x x%x x%x\n", 281 *name, *(name+1), *(name+2), *(name+3), 282 *(name+4), *(name+5), *(name+6), *(name+7), 283 ndlp->nlp_DID, ndlp->nlp_flag, 284 ndlp->nlp_state, ndlp->nlp_rpi); 285 } else { 286 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, 287 "0204 Devloss timeout on " 288 "WWPN %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x " 289 "NPort x%06x Data: x%x x%x x%x\n", 290 *name, *(name+1), *(name+2), *(name+3), 291 *(name+4), *(name+5), *(name+6), *(name+7), 292 ndlp->nlp_DID, ndlp->nlp_flag, 293 ndlp->nlp_state, ndlp->nlp_rpi); 294 } 295 296 put_node = rdata->pnode != NULL; 297 put_rport = ndlp->rport != NULL; 298 rdata->pnode = NULL; 299 ndlp->rport = NULL; 300 if (put_node) 301 lpfc_nlp_put(ndlp); 302 if (put_rport) 303 put_device(&rport->dev); 304 305 if (!(vport->load_flag & FC_UNLOADING) && 306 !(ndlp->nlp_flag & NLP_DELAY_TMO) && 307 !(ndlp->nlp_flag & NLP_NPR_2B_DISC) && 308 (ndlp->nlp_state != NLP_STE_UNMAPPED_NODE) && 309 (ndlp->nlp_state != NLP_STE_REG_LOGIN_ISSUE) && 310 (ndlp->nlp_state != NLP_STE_PRLI_ISSUE)) 311 lpfc_disc_state_machine(vport, ndlp, NULL, NLP_EVT_DEVICE_RM); 312 313 return fcf_inuse; 314 } 315 316 /** 317 * lpfc_sli4_post_dev_loss_tmo_handler - SLI4 post devloss timeout handler 318 * @phba: Pointer to hba context object. 319 * @fcf_inuse: SLI4 FCF in-use state reported from devloss timeout handler. 320 * @nlp_did: remote node identifer with devloss timeout. 321 * 322 * This function is called from the worker thread after invoking devloss 323 * timeout handler and releasing the reference count for the ndlp with 324 * which the devloss timeout was handled for SLI4 host. For the devloss 325 * timeout of the last remote node which had been in use of FCF, when this 326 * routine is invoked, it shall be guaranteed that none of the remote are 327 * in-use of FCF. When devloss timeout to the last remote using the FCF, 328 * if the FIP engine is neither in FCF table scan process nor roundrobin 329 * failover process, the in-use FCF shall be unregistered. If the FIP 330 * engine is in FCF discovery process, the devloss timeout state shall 331 * be set for either the FCF table scan process or roundrobin failover 332 * process to unregister the in-use FCF. 333 **/ 334 static void 335 lpfc_sli4_post_dev_loss_tmo_handler(struct lpfc_hba *phba, int fcf_inuse, 336 uint32_t nlp_did) 337 { 338 /* If devloss timeout happened to a remote node when FCF had no 339 * longer been in-use, do nothing. 340 */ 341 if (!fcf_inuse) 342 return; 343 344 if ((phba->hba_flag & HBA_FIP_SUPPORT) && !lpfc_fcf_inuse(phba)) { 345 spin_lock_irq(&phba->hbalock); 346 if (phba->fcf.fcf_flag & FCF_DISCOVERY) { 347 if (phba->hba_flag & HBA_DEVLOSS_TMO) { 348 spin_unlock_irq(&phba->hbalock); 349 return; 350 } 351 phba->hba_flag |= HBA_DEVLOSS_TMO; 352 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 353 "2847 Last remote node (x%x) using " 354 "FCF devloss tmo\n", nlp_did); 355 } 356 if (phba->fcf.fcf_flag & FCF_REDISC_PROG) { 357 spin_unlock_irq(&phba->hbalock); 358 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 359 "2868 Devloss tmo to FCF rediscovery " 360 "in progress\n"); 361 return; 362 } 363 if (!(phba->hba_flag & (FCF_TS_INPROG | FCF_RR_INPROG))) { 364 spin_unlock_irq(&phba->hbalock); 365 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 366 "2869 Devloss tmo to idle FIP engine, " 367 "unreg in-use FCF and rescan.\n"); 368 /* Unregister in-use FCF and rescan */ 369 lpfc_unregister_fcf_rescan(phba); 370 return; 371 } 372 spin_unlock_irq(&phba->hbalock); 373 if (phba->hba_flag & FCF_TS_INPROG) 374 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 375 "2870 FCF table scan in progress\n"); 376 if (phba->hba_flag & FCF_RR_INPROG) 377 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 378 "2871 FLOGI roundrobin FCF failover " 379 "in progress\n"); 380 } 381 lpfc_unregister_unused_fcf(phba); 382 } 383 384 /** 385 * lpfc_alloc_fast_evt - Allocates data structure for posting event 386 * @phba: Pointer to hba context object. 387 * 388 * This function is called from the functions which need to post 389 * events from interrupt context. This function allocates data 390 * structure required for posting event. It also keeps track of 391 * number of events pending and prevent event storm when there are 392 * too many events. 393 **/ 394 struct lpfc_fast_path_event * 395 lpfc_alloc_fast_evt(struct lpfc_hba *phba) { 396 struct lpfc_fast_path_event *ret; 397 398 /* If there are lot of fast event do not exhaust memory due to this */ 399 if (atomic_read(&phba->fast_event_count) > LPFC_MAX_EVT_COUNT) 400 return NULL; 401 402 ret = kzalloc(sizeof(struct lpfc_fast_path_event), 403 GFP_ATOMIC); 404 if (ret) { 405 atomic_inc(&phba->fast_event_count); 406 INIT_LIST_HEAD(&ret->work_evt.evt_listp); 407 ret->work_evt.evt = LPFC_EVT_FASTPATH_MGMT_EVT; 408 } 409 return ret; 410 } 411 412 /** 413 * lpfc_free_fast_evt - Frees event data structure 414 * @phba: Pointer to hba context object. 415 * @evt: Event object which need to be freed. 416 * 417 * This function frees the data structure required for posting 418 * events. 419 **/ 420 void 421 lpfc_free_fast_evt(struct lpfc_hba *phba, 422 struct lpfc_fast_path_event *evt) { 423 424 atomic_dec(&phba->fast_event_count); 425 kfree(evt); 426 } 427 428 /** 429 * lpfc_send_fastpath_evt - Posts events generated from fast path 430 * @phba: Pointer to hba context object. 431 * @evtp: Event data structure. 432 * 433 * This function is called from worker thread, when the interrupt 434 * context need to post an event. This function posts the event 435 * to fc transport netlink interface. 436 **/ 437 static void 438 lpfc_send_fastpath_evt(struct lpfc_hba *phba, 439 struct lpfc_work_evt *evtp) 440 { 441 unsigned long evt_category, evt_sub_category; 442 struct lpfc_fast_path_event *fast_evt_data; 443 char *evt_data; 444 uint32_t evt_data_size; 445 struct Scsi_Host *shost; 446 447 fast_evt_data = container_of(evtp, struct lpfc_fast_path_event, 448 work_evt); 449 450 evt_category = (unsigned long) fast_evt_data->un.fabric_evt.event_type; 451 evt_sub_category = (unsigned long) fast_evt_data->un. 452 fabric_evt.subcategory; 453 shost = lpfc_shost_from_vport(fast_evt_data->vport); 454 if (evt_category == FC_REG_FABRIC_EVENT) { 455 if (evt_sub_category == LPFC_EVENT_FCPRDCHKERR) { 456 evt_data = (char *) &fast_evt_data->un.read_check_error; 457 evt_data_size = sizeof(fast_evt_data->un. 458 read_check_error); 459 } else if ((evt_sub_category == LPFC_EVENT_FABRIC_BUSY) || 460 (evt_sub_category == LPFC_EVENT_PORT_BUSY)) { 461 evt_data = (char *) &fast_evt_data->un.fabric_evt; 462 evt_data_size = sizeof(fast_evt_data->un.fabric_evt); 463 } else { 464 lpfc_free_fast_evt(phba, fast_evt_data); 465 return; 466 } 467 } else if (evt_category == FC_REG_SCSI_EVENT) { 468 switch (evt_sub_category) { 469 case LPFC_EVENT_QFULL: 470 case LPFC_EVENT_DEVBSY: 471 evt_data = (char *) &fast_evt_data->un.scsi_evt; 472 evt_data_size = sizeof(fast_evt_data->un.scsi_evt); 473 break; 474 case LPFC_EVENT_CHECK_COND: 475 evt_data = (char *) &fast_evt_data->un.check_cond_evt; 476 evt_data_size = sizeof(fast_evt_data->un. 477 check_cond_evt); 478 break; 479 case LPFC_EVENT_VARQUEDEPTH: 480 evt_data = (char *) &fast_evt_data->un.queue_depth_evt; 481 evt_data_size = sizeof(fast_evt_data->un. 482 queue_depth_evt); 483 break; 484 default: 485 lpfc_free_fast_evt(phba, fast_evt_data); 486 return; 487 } 488 } else { 489 lpfc_free_fast_evt(phba, fast_evt_data); 490 return; 491 } 492 493 fc_host_post_vendor_event(shost, 494 fc_get_event_number(), 495 evt_data_size, 496 evt_data, 497 LPFC_NL_VENDOR_ID); 498 499 lpfc_free_fast_evt(phba, fast_evt_data); 500 return; 501 } 502 503 static void 504 lpfc_work_list_done(struct lpfc_hba *phba) 505 { 506 struct lpfc_work_evt *evtp = NULL; 507 struct lpfc_nodelist *ndlp; 508 int free_evt; 509 int fcf_inuse; 510 uint32_t nlp_did; 511 512 spin_lock_irq(&phba->hbalock); 513 while (!list_empty(&phba->work_list)) { 514 list_remove_head((&phba->work_list), evtp, typeof(*evtp), 515 evt_listp); 516 spin_unlock_irq(&phba->hbalock); 517 free_evt = 1; 518 switch (evtp->evt) { 519 case LPFC_EVT_ELS_RETRY: 520 ndlp = (struct lpfc_nodelist *) (evtp->evt_arg1); 521 lpfc_els_retry_delay_handler(ndlp); 522 free_evt = 0; /* evt is part of ndlp */ 523 /* decrement the node reference count held 524 * for this queued work 525 */ 526 lpfc_nlp_put(ndlp); 527 break; 528 case LPFC_EVT_DEV_LOSS: 529 ndlp = (struct lpfc_nodelist *)(evtp->evt_arg1); 530 fcf_inuse = lpfc_dev_loss_tmo_handler(ndlp); 531 free_evt = 0; 532 /* decrement the node reference count held for 533 * this queued work 534 */ 535 nlp_did = ndlp->nlp_DID; 536 lpfc_nlp_put(ndlp); 537 if (phba->sli_rev == LPFC_SLI_REV4) 538 lpfc_sli4_post_dev_loss_tmo_handler(phba, 539 fcf_inuse, 540 nlp_did); 541 break; 542 case LPFC_EVT_ONLINE: 543 if (phba->link_state < LPFC_LINK_DOWN) 544 *(int *) (evtp->evt_arg1) = lpfc_online(phba); 545 else 546 *(int *) (evtp->evt_arg1) = 0; 547 complete((struct completion *)(evtp->evt_arg2)); 548 break; 549 case LPFC_EVT_OFFLINE_PREP: 550 if (phba->link_state >= LPFC_LINK_DOWN) 551 lpfc_offline_prep(phba, LPFC_MBX_WAIT); 552 *(int *)(evtp->evt_arg1) = 0; 553 complete((struct completion *)(evtp->evt_arg2)); 554 break; 555 case LPFC_EVT_OFFLINE: 556 lpfc_offline(phba); 557 lpfc_sli_brdrestart(phba); 558 *(int *)(evtp->evt_arg1) = 559 lpfc_sli_brdready(phba, HS_FFRDY | HS_MBRDY); 560 lpfc_unblock_mgmt_io(phba); 561 complete((struct completion *)(evtp->evt_arg2)); 562 break; 563 case LPFC_EVT_WARM_START: 564 lpfc_offline(phba); 565 lpfc_reset_barrier(phba); 566 lpfc_sli_brdreset(phba); 567 lpfc_hba_down_post(phba); 568 *(int *)(evtp->evt_arg1) = 569 lpfc_sli_brdready(phba, HS_MBRDY); 570 lpfc_unblock_mgmt_io(phba); 571 complete((struct completion *)(evtp->evt_arg2)); 572 break; 573 case LPFC_EVT_KILL: 574 lpfc_offline(phba); 575 *(int *)(evtp->evt_arg1) 576 = (phba->pport->stopped) 577 ? 0 : lpfc_sli_brdkill(phba); 578 lpfc_unblock_mgmt_io(phba); 579 complete((struct completion *)(evtp->evt_arg2)); 580 break; 581 case LPFC_EVT_FASTPATH_MGMT_EVT: 582 lpfc_send_fastpath_evt(phba, evtp); 583 free_evt = 0; 584 break; 585 case LPFC_EVT_RESET_HBA: 586 if (!(phba->pport->load_flag & FC_UNLOADING)) 587 lpfc_reset_hba(phba); 588 break; 589 } 590 if (free_evt) 591 kfree(evtp); 592 spin_lock_irq(&phba->hbalock); 593 } 594 spin_unlock_irq(&phba->hbalock); 595 596 } 597 598 static void 599 lpfc_work_done(struct lpfc_hba *phba) 600 { 601 struct lpfc_sli_ring *pring; 602 uint32_t ha_copy, status, control, work_port_events; 603 struct lpfc_vport **vports; 604 struct lpfc_vport *vport; 605 int i; 606 607 spin_lock_irq(&phba->hbalock); 608 ha_copy = phba->work_ha; 609 phba->work_ha = 0; 610 spin_unlock_irq(&phba->hbalock); 611 612 /* First, try to post the next mailbox command to SLI4 device */ 613 if (phba->pci_dev_grp == LPFC_PCI_DEV_OC) 614 lpfc_sli4_post_async_mbox(phba); 615 616 if (ha_copy & HA_ERATT) 617 /* Handle the error attention event */ 618 lpfc_handle_eratt(phba); 619 620 if (ha_copy & HA_MBATT) 621 lpfc_sli_handle_mb_event(phba); 622 623 if (ha_copy & HA_LATT) 624 lpfc_handle_latt(phba); 625 626 /* Process SLI4 events */ 627 if (phba->pci_dev_grp == LPFC_PCI_DEV_OC) { 628 if (phba->hba_flag & HBA_RRQ_ACTIVE) 629 lpfc_handle_rrq_active(phba); 630 if (phba->hba_flag & FCP_XRI_ABORT_EVENT) 631 lpfc_sli4_fcp_xri_abort_event_proc(phba); 632 if (phba->hba_flag & ELS_XRI_ABORT_EVENT) 633 lpfc_sli4_els_xri_abort_event_proc(phba); 634 if (phba->hba_flag & ASYNC_EVENT) 635 lpfc_sli4_async_event_proc(phba); 636 if (phba->hba_flag & HBA_POST_RECEIVE_BUFFER) { 637 spin_lock_irq(&phba->hbalock); 638 phba->hba_flag &= ~HBA_POST_RECEIVE_BUFFER; 639 spin_unlock_irq(&phba->hbalock); 640 lpfc_sli_hbqbuf_add_hbqs(phba, LPFC_ELS_HBQ); 641 } 642 if (phba->fcf.fcf_flag & FCF_REDISC_EVT) 643 lpfc_sli4_fcf_redisc_event_proc(phba); 644 } 645 646 vports = lpfc_create_vport_work_array(phba); 647 if (vports != NULL) 648 for (i = 0; i <= phba->max_vports; i++) { 649 /* 650 * We could have no vports in array if unloading, so if 651 * this happens then just use the pport 652 */ 653 if (vports[i] == NULL && i == 0) 654 vport = phba->pport; 655 else 656 vport = vports[i]; 657 if (vport == NULL) 658 break; 659 spin_lock_irq(&vport->work_port_lock); 660 work_port_events = vport->work_port_events; 661 vport->work_port_events &= ~work_port_events; 662 spin_unlock_irq(&vport->work_port_lock); 663 if (work_port_events & WORKER_DISC_TMO) 664 lpfc_disc_timeout_handler(vport); 665 if (work_port_events & WORKER_ELS_TMO) 666 lpfc_els_timeout_handler(vport); 667 if (work_port_events & WORKER_HB_TMO) 668 lpfc_hb_timeout_handler(phba); 669 if (work_port_events & WORKER_MBOX_TMO) 670 lpfc_mbox_timeout_handler(phba); 671 if (work_port_events & WORKER_FABRIC_BLOCK_TMO) 672 lpfc_unblock_fabric_iocbs(phba); 673 if (work_port_events & WORKER_FDMI_TMO) 674 lpfc_fdmi_timeout_handler(vport); 675 if (work_port_events & WORKER_RAMP_DOWN_QUEUE) 676 lpfc_ramp_down_queue_handler(phba); 677 if (work_port_events & WORKER_RAMP_UP_QUEUE) 678 lpfc_ramp_up_queue_handler(phba); 679 if (work_port_events & WORKER_DELAYED_DISC_TMO) 680 lpfc_delayed_disc_timeout_handler(vport); 681 } 682 lpfc_destroy_vport_work_array(phba, vports); 683 684 pring = &phba->sli.ring[LPFC_ELS_RING]; 685 status = (ha_copy & (HA_RXMASK << (4*LPFC_ELS_RING))); 686 status >>= (4*LPFC_ELS_RING); 687 if ((status & HA_RXMASK) || 688 (pring->flag & LPFC_DEFERRED_RING_EVENT) || 689 (phba->hba_flag & HBA_SP_QUEUE_EVT)) { 690 if (pring->flag & LPFC_STOP_IOCB_EVENT) { 691 pring->flag |= LPFC_DEFERRED_RING_EVENT; 692 /* Set the lpfc data pending flag */ 693 set_bit(LPFC_DATA_READY, &phba->data_flags); 694 } else { 695 if (phba->link_state >= LPFC_LINK_UP) { 696 pring->flag &= ~LPFC_DEFERRED_RING_EVENT; 697 lpfc_sli_handle_slow_ring_event(phba, pring, 698 (status & 699 HA_RXMASK)); 700 } 701 } 702 if ((phba->sli_rev == LPFC_SLI_REV4) & 703 (!list_empty(&pring->txq))) 704 lpfc_drain_txq(phba); 705 /* 706 * Turn on Ring interrupts 707 */ 708 if (phba->sli_rev <= LPFC_SLI_REV3) { 709 spin_lock_irq(&phba->hbalock); 710 control = readl(phba->HCregaddr); 711 if (!(control & (HC_R0INT_ENA << LPFC_ELS_RING))) { 712 lpfc_debugfs_slow_ring_trc(phba, 713 "WRK Enable ring: cntl:x%x hacopy:x%x", 714 control, ha_copy, 0); 715 716 control |= (HC_R0INT_ENA << LPFC_ELS_RING); 717 writel(control, phba->HCregaddr); 718 readl(phba->HCregaddr); /* flush */ 719 } else { 720 lpfc_debugfs_slow_ring_trc(phba, 721 "WRK Ring ok: cntl:x%x hacopy:x%x", 722 control, ha_copy, 0); 723 } 724 spin_unlock_irq(&phba->hbalock); 725 } 726 } 727 lpfc_work_list_done(phba); 728 } 729 730 int 731 lpfc_do_work(void *p) 732 { 733 struct lpfc_hba *phba = p; 734 int rc; 735 736 set_user_nice(current, -20); 737 current->flags |= PF_NOFREEZE; 738 phba->data_flags = 0; 739 740 while (!kthread_should_stop()) { 741 /* wait and check worker queue activities */ 742 rc = wait_event_interruptible(phba->work_waitq, 743 (test_and_clear_bit(LPFC_DATA_READY, 744 &phba->data_flags) 745 || kthread_should_stop())); 746 /* Signal wakeup shall terminate the worker thread */ 747 if (rc) { 748 lpfc_printf_log(phba, KERN_ERR, LOG_ELS, 749 "0433 Wakeup on signal: rc=x%x\n", rc); 750 break; 751 } 752 753 /* Attend pending lpfc data processing */ 754 lpfc_work_done(phba); 755 } 756 phba->worker_thread = NULL; 757 lpfc_printf_log(phba, KERN_INFO, LOG_ELS, 758 "0432 Worker thread stopped.\n"); 759 return 0; 760 } 761 762 /* 763 * This is only called to handle FC worker events. Since this a rare 764 * occurrence, we allocate a struct lpfc_work_evt structure here instead of 765 * embedding it in the IOCB. 766 */ 767 int 768 lpfc_workq_post_event(struct lpfc_hba *phba, void *arg1, void *arg2, 769 uint32_t evt) 770 { 771 struct lpfc_work_evt *evtp; 772 unsigned long flags; 773 774 /* 775 * All Mailbox completions and LPFC_ELS_RING rcv ring IOCB events will 776 * be queued to worker thread for processing 777 */ 778 evtp = kmalloc(sizeof(struct lpfc_work_evt), GFP_ATOMIC); 779 if (!evtp) 780 return 0; 781 782 evtp->evt_arg1 = arg1; 783 evtp->evt_arg2 = arg2; 784 evtp->evt = evt; 785 786 spin_lock_irqsave(&phba->hbalock, flags); 787 list_add_tail(&evtp->evt_listp, &phba->work_list); 788 spin_unlock_irqrestore(&phba->hbalock, flags); 789 790 lpfc_worker_wake_up(phba); 791 792 return 1; 793 } 794 795 void 796 lpfc_cleanup_rpis(struct lpfc_vport *vport, int remove) 797 { 798 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 799 struct lpfc_hba *phba = vport->phba; 800 struct lpfc_nodelist *ndlp, *next_ndlp; 801 int rc; 802 803 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) { 804 if (!NLP_CHK_NODE_ACT(ndlp)) 805 continue; 806 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE) 807 continue; 808 if ((phba->sli3_options & LPFC_SLI3_VPORT_TEARDOWN) || 809 ((vport->port_type == LPFC_NPIV_PORT) && 810 (ndlp->nlp_DID == NameServer_DID))) 811 lpfc_unreg_rpi(vport, ndlp); 812 813 /* Leave Fabric nodes alone on link down */ 814 if ((phba->sli_rev < LPFC_SLI_REV4) && 815 (!remove && ndlp->nlp_type & NLP_FABRIC)) 816 continue; 817 rc = lpfc_disc_state_machine(vport, ndlp, NULL, 818 remove 819 ? NLP_EVT_DEVICE_RM 820 : NLP_EVT_DEVICE_RECOVERY); 821 } 822 if (phba->sli3_options & LPFC_SLI3_VPORT_TEARDOWN) { 823 if (phba->sli_rev == LPFC_SLI_REV4) 824 lpfc_sli4_unreg_all_rpis(vport); 825 lpfc_mbx_unreg_vpi(vport); 826 spin_lock_irq(shost->host_lock); 827 vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI; 828 spin_unlock_irq(shost->host_lock); 829 } 830 } 831 832 void 833 lpfc_port_link_failure(struct lpfc_vport *vport) 834 { 835 lpfc_vport_set_state(vport, FC_VPORT_LINKDOWN); 836 837 /* Cleanup any outstanding received buffers */ 838 lpfc_cleanup_rcv_buffers(vport); 839 840 /* Cleanup any outstanding RSCN activity */ 841 lpfc_els_flush_rscn(vport); 842 843 /* Cleanup any outstanding ELS commands */ 844 lpfc_els_flush_cmd(vport); 845 846 lpfc_cleanup_rpis(vport, 0); 847 848 /* Turn off discovery timer if its running */ 849 lpfc_can_disctmo(vport); 850 } 851 852 void 853 lpfc_linkdown_port(struct lpfc_vport *vport) 854 { 855 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 856 857 fc_host_post_event(shost, fc_get_event_number(), FCH_EVT_LINKDOWN, 0); 858 859 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, 860 "Link Down: state:x%x rtry:x%x flg:x%x", 861 vport->port_state, vport->fc_ns_retry, vport->fc_flag); 862 863 lpfc_port_link_failure(vport); 864 865 /* Stop delayed Nport discovery */ 866 spin_lock_irq(shost->host_lock); 867 vport->fc_flag &= ~FC_DISC_DELAYED; 868 spin_unlock_irq(shost->host_lock); 869 del_timer_sync(&vport->delayed_disc_tmo); 870 } 871 872 int 873 lpfc_linkdown(struct lpfc_hba *phba) 874 { 875 struct lpfc_vport *vport = phba->pport; 876 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 877 struct lpfc_vport **vports; 878 LPFC_MBOXQ_t *mb; 879 int i; 880 881 if (phba->link_state == LPFC_LINK_DOWN) 882 return 0; 883 884 /* Block all SCSI stack I/Os */ 885 lpfc_scsi_dev_block(phba); 886 887 spin_lock_irq(&phba->hbalock); 888 phba->fcf.fcf_flag &= ~(FCF_AVAILABLE | FCF_SCAN_DONE); 889 spin_unlock_irq(&phba->hbalock); 890 if (phba->link_state > LPFC_LINK_DOWN) { 891 phba->link_state = LPFC_LINK_DOWN; 892 spin_lock_irq(shost->host_lock); 893 phba->pport->fc_flag &= ~FC_LBIT; 894 spin_unlock_irq(shost->host_lock); 895 } 896 vports = lpfc_create_vport_work_array(phba); 897 if (vports != NULL) 898 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) { 899 /* Issue a LINK DOWN event to all nodes */ 900 lpfc_linkdown_port(vports[i]); 901 } 902 lpfc_destroy_vport_work_array(phba, vports); 903 /* Clean up any firmware default rpi's */ 904 mb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 905 if (mb) { 906 lpfc_unreg_did(phba, 0xffff, LPFC_UNREG_ALL_DFLT_RPIS, mb); 907 mb->vport = vport; 908 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl; 909 if (lpfc_sli_issue_mbox(phba, mb, MBX_NOWAIT) 910 == MBX_NOT_FINISHED) { 911 mempool_free(mb, phba->mbox_mem_pool); 912 } 913 } 914 915 /* Setup myDID for link up if we are in pt2pt mode */ 916 if (phba->pport->fc_flag & FC_PT2PT) { 917 phba->pport->fc_myDID = 0; 918 mb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 919 if (mb) { 920 lpfc_config_link(phba, mb); 921 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl; 922 mb->vport = vport; 923 if (lpfc_sli_issue_mbox(phba, mb, MBX_NOWAIT) 924 == MBX_NOT_FINISHED) { 925 mempool_free(mb, phba->mbox_mem_pool); 926 } 927 } 928 spin_lock_irq(shost->host_lock); 929 phba->pport->fc_flag &= ~(FC_PT2PT | FC_PT2PT_PLOGI); 930 spin_unlock_irq(shost->host_lock); 931 } 932 933 return 0; 934 } 935 936 static void 937 lpfc_linkup_cleanup_nodes(struct lpfc_vport *vport) 938 { 939 struct lpfc_nodelist *ndlp; 940 941 list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) { 942 if (!NLP_CHK_NODE_ACT(ndlp)) 943 continue; 944 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE) 945 continue; 946 if (ndlp->nlp_type & NLP_FABRIC) { 947 /* On Linkup its safe to clean up the ndlp 948 * from Fabric connections. 949 */ 950 if (ndlp->nlp_DID != Fabric_DID) 951 lpfc_unreg_rpi(vport, ndlp); 952 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE); 953 } else if (!(ndlp->nlp_flag & NLP_NPR_ADISC)) { 954 /* Fail outstanding IO now since device is 955 * marked for PLOGI. 956 */ 957 lpfc_unreg_rpi(vport, ndlp); 958 } 959 } 960 } 961 962 static void 963 lpfc_linkup_port(struct lpfc_vport *vport) 964 { 965 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 966 struct lpfc_hba *phba = vport->phba; 967 968 if ((vport->load_flag & FC_UNLOADING) != 0) 969 return; 970 971 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, 972 "Link Up: top:x%x speed:x%x flg:x%x", 973 phba->fc_topology, phba->fc_linkspeed, phba->link_flag); 974 975 /* If NPIV is not enabled, only bring the physical port up */ 976 if (!(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) && 977 (vport != phba->pport)) 978 return; 979 980 fc_host_post_event(shost, fc_get_event_number(), FCH_EVT_LINKUP, 0); 981 982 spin_lock_irq(shost->host_lock); 983 vport->fc_flag &= ~(FC_PT2PT | FC_PT2PT_PLOGI | FC_ABORT_DISCOVERY | 984 FC_RSCN_MODE | FC_NLP_MORE | FC_RSCN_DISCOVERY); 985 vport->fc_flag |= FC_NDISC_ACTIVE; 986 vport->fc_ns_retry = 0; 987 spin_unlock_irq(shost->host_lock); 988 989 if (vport->fc_flag & FC_LBIT) 990 lpfc_linkup_cleanup_nodes(vport); 991 992 } 993 994 static int 995 lpfc_linkup(struct lpfc_hba *phba) 996 { 997 struct lpfc_vport **vports; 998 int i; 999 1000 lpfc_cleanup_wt_rrqs(phba); 1001 phba->link_state = LPFC_LINK_UP; 1002 1003 /* Unblock fabric iocbs if they are blocked */ 1004 clear_bit(FABRIC_COMANDS_BLOCKED, &phba->bit_flags); 1005 del_timer_sync(&phba->fabric_block_timer); 1006 1007 vports = lpfc_create_vport_work_array(phba); 1008 if (vports != NULL) 1009 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) 1010 lpfc_linkup_port(vports[i]); 1011 lpfc_destroy_vport_work_array(phba, vports); 1012 1013 return 0; 1014 } 1015 1016 /* 1017 * This routine handles processing a CLEAR_LA mailbox 1018 * command upon completion. It is setup in the LPFC_MBOXQ 1019 * as the completion routine when the command is 1020 * handed off to the SLI layer. 1021 */ 1022 static void 1023 lpfc_mbx_cmpl_clear_la(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 1024 { 1025 struct lpfc_vport *vport = pmb->vport; 1026 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 1027 struct lpfc_sli *psli = &phba->sli; 1028 MAILBOX_t *mb = &pmb->u.mb; 1029 uint32_t control; 1030 1031 /* Since we don't do discovery right now, turn these off here */ 1032 psli->ring[psli->extra_ring].flag &= ~LPFC_STOP_IOCB_EVENT; 1033 psli->ring[psli->fcp_ring].flag &= ~LPFC_STOP_IOCB_EVENT; 1034 psli->ring[psli->next_ring].flag &= ~LPFC_STOP_IOCB_EVENT; 1035 1036 /* Check for error */ 1037 if ((mb->mbxStatus) && (mb->mbxStatus != 0x1601)) { 1038 /* CLEAR_LA mbox error <mbxStatus> state <hba_state> */ 1039 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX, 1040 "0320 CLEAR_LA mbxStatus error x%x hba " 1041 "state x%x\n", 1042 mb->mbxStatus, vport->port_state); 1043 phba->link_state = LPFC_HBA_ERROR; 1044 goto out; 1045 } 1046 1047 if (vport->port_type == LPFC_PHYSICAL_PORT) 1048 phba->link_state = LPFC_HBA_READY; 1049 1050 spin_lock_irq(&phba->hbalock); 1051 psli->sli_flag |= LPFC_PROCESS_LA; 1052 control = readl(phba->HCregaddr); 1053 control |= HC_LAINT_ENA; 1054 writel(control, phba->HCregaddr); 1055 readl(phba->HCregaddr); /* flush */ 1056 spin_unlock_irq(&phba->hbalock); 1057 mempool_free(pmb, phba->mbox_mem_pool); 1058 return; 1059 1060 out: 1061 /* Device Discovery completes */ 1062 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, 1063 "0225 Device Discovery completes\n"); 1064 mempool_free(pmb, phba->mbox_mem_pool); 1065 1066 spin_lock_irq(shost->host_lock); 1067 vport->fc_flag &= ~FC_ABORT_DISCOVERY; 1068 spin_unlock_irq(shost->host_lock); 1069 1070 lpfc_can_disctmo(vport); 1071 1072 /* turn on Link Attention interrupts */ 1073 1074 spin_lock_irq(&phba->hbalock); 1075 psli->sli_flag |= LPFC_PROCESS_LA; 1076 control = readl(phba->HCregaddr); 1077 control |= HC_LAINT_ENA; 1078 writel(control, phba->HCregaddr); 1079 readl(phba->HCregaddr); /* flush */ 1080 spin_unlock_irq(&phba->hbalock); 1081 1082 return; 1083 } 1084 1085 1086 static void 1087 lpfc_mbx_cmpl_local_config_link(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 1088 { 1089 struct lpfc_vport *vport = pmb->vport; 1090 1091 if (pmb->u.mb.mbxStatus) 1092 goto out; 1093 1094 mempool_free(pmb, phba->mbox_mem_pool); 1095 1096 /* don't perform discovery for SLI4 loopback diagnostic test */ 1097 if ((phba->sli_rev == LPFC_SLI_REV4) && 1098 !(phba->hba_flag & HBA_FCOE_MODE) && 1099 (phba->link_flag & LS_LOOPBACK_MODE)) 1100 return; 1101 1102 if (phba->fc_topology == LPFC_TOPOLOGY_LOOP && 1103 vport->fc_flag & FC_PUBLIC_LOOP && 1104 !(vport->fc_flag & FC_LBIT)) { 1105 /* Need to wait for FAN - use discovery timer 1106 * for timeout. port_state is identically 1107 * LPFC_LOCAL_CFG_LINK while waiting for FAN 1108 */ 1109 lpfc_set_disctmo(vport); 1110 return; 1111 } 1112 1113 /* Start discovery by sending a FLOGI. port_state is identically 1114 * LPFC_FLOGI while waiting for FLOGI cmpl 1115 */ 1116 if (vport->port_state != LPFC_FLOGI || vport->fc_flag & FC_PT2PT_PLOGI) 1117 lpfc_initial_flogi(vport); 1118 return; 1119 1120 out: 1121 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX, 1122 "0306 CONFIG_LINK mbxStatus error x%x " 1123 "HBA state x%x\n", 1124 pmb->u.mb.mbxStatus, vport->port_state); 1125 mempool_free(pmb, phba->mbox_mem_pool); 1126 1127 lpfc_linkdown(phba); 1128 1129 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY, 1130 "0200 CONFIG_LINK bad hba state x%x\n", 1131 vport->port_state); 1132 1133 lpfc_issue_clear_la(phba, vport); 1134 return; 1135 } 1136 1137 /** 1138 * lpfc_sli4_clear_fcf_rr_bmask 1139 * @phba pointer to the struct lpfc_hba for this port. 1140 * This fucnction resets the round robin bit mask and clears the 1141 * fcf priority list. The list deletions are done while holding the 1142 * hbalock. The ON_LIST flag and the FLOGI_FAILED flags are cleared 1143 * from the lpfc_fcf_pri record. 1144 **/ 1145 void 1146 lpfc_sli4_clear_fcf_rr_bmask(struct lpfc_hba *phba) 1147 { 1148 struct lpfc_fcf_pri *fcf_pri; 1149 struct lpfc_fcf_pri *next_fcf_pri; 1150 memset(phba->fcf.fcf_rr_bmask, 0, sizeof(*phba->fcf.fcf_rr_bmask)); 1151 spin_lock_irq(&phba->hbalock); 1152 list_for_each_entry_safe(fcf_pri, next_fcf_pri, 1153 &phba->fcf.fcf_pri_list, list) { 1154 list_del_init(&fcf_pri->list); 1155 fcf_pri->fcf_rec.flag = 0; 1156 } 1157 spin_unlock_irq(&phba->hbalock); 1158 } 1159 static void 1160 lpfc_mbx_cmpl_reg_fcfi(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq) 1161 { 1162 struct lpfc_vport *vport = mboxq->vport; 1163 1164 if (mboxq->u.mb.mbxStatus) { 1165 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX, 1166 "2017 REG_FCFI mbxStatus error x%x " 1167 "HBA state x%x\n", 1168 mboxq->u.mb.mbxStatus, vport->port_state); 1169 goto fail_out; 1170 } 1171 1172 /* Start FCoE discovery by sending a FLOGI. */ 1173 phba->fcf.fcfi = bf_get(lpfc_reg_fcfi_fcfi, &mboxq->u.mqe.un.reg_fcfi); 1174 /* Set the FCFI registered flag */ 1175 spin_lock_irq(&phba->hbalock); 1176 phba->fcf.fcf_flag |= FCF_REGISTERED; 1177 spin_unlock_irq(&phba->hbalock); 1178 1179 /* If there is a pending FCoE event, restart FCF table scan. */ 1180 if ((!(phba->hba_flag & FCF_RR_INPROG)) && 1181 lpfc_check_pending_fcoe_event(phba, LPFC_UNREG_FCF)) 1182 goto fail_out; 1183 1184 /* Mark successful completion of FCF table scan */ 1185 spin_lock_irq(&phba->hbalock); 1186 phba->fcf.fcf_flag |= (FCF_SCAN_DONE | FCF_IN_USE); 1187 phba->hba_flag &= ~FCF_TS_INPROG; 1188 if (vport->port_state != LPFC_FLOGI) { 1189 phba->hba_flag |= FCF_RR_INPROG; 1190 spin_unlock_irq(&phba->hbalock); 1191 lpfc_issue_init_vfi(vport); 1192 goto out; 1193 } 1194 spin_unlock_irq(&phba->hbalock); 1195 goto out; 1196 1197 fail_out: 1198 spin_lock_irq(&phba->hbalock); 1199 phba->hba_flag &= ~FCF_RR_INPROG; 1200 spin_unlock_irq(&phba->hbalock); 1201 out: 1202 mempool_free(mboxq, phba->mbox_mem_pool); 1203 } 1204 1205 /** 1206 * lpfc_fab_name_match - Check if the fcf fabric name match. 1207 * @fab_name: pointer to fabric name. 1208 * @new_fcf_record: pointer to fcf record. 1209 * 1210 * This routine compare the fcf record's fabric name with provided 1211 * fabric name. If the fabric name are identical this function 1212 * returns 1 else return 0. 1213 **/ 1214 static uint32_t 1215 lpfc_fab_name_match(uint8_t *fab_name, struct fcf_record *new_fcf_record) 1216 { 1217 if (fab_name[0] != bf_get(lpfc_fcf_record_fab_name_0, new_fcf_record)) 1218 return 0; 1219 if (fab_name[1] != bf_get(lpfc_fcf_record_fab_name_1, new_fcf_record)) 1220 return 0; 1221 if (fab_name[2] != bf_get(lpfc_fcf_record_fab_name_2, new_fcf_record)) 1222 return 0; 1223 if (fab_name[3] != bf_get(lpfc_fcf_record_fab_name_3, new_fcf_record)) 1224 return 0; 1225 if (fab_name[4] != bf_get(lpfc_fcf_record_fab_name_4, new_fcf_record)) 1226 return 0; 1227 if (fab_name[5] != bf_get(lpfc_fcf_record_fab_name_5, new_fcf_record)) 1228 return 0; 1229 if (fab_name[6] != bf_get(lpfc_fcf_record_fab_name_6, new_fcf_record)) 1230 return 0; 1231 if (fab_name[7] != bf_get(lpfc_fcf_record_fab_name_7, new_fcf_record)) 1232 return 0; 1233 return 1; 1234 } 1235 1236 /** 1237 * lpfc_sw_name_match - Check if the fcf switch name match. 1238 * @fab_name: pointer to fabric name. 1239 * @new_fcf_record: pointer to fcf record. 1240 * 1241 * This routine compare the fcf record's switch name with provided 1242 * switch name. If the switch name are identical this function 1243 * returns 1 else return 0. 1244 **/ 1245 static uint32_t 1246 lpfc_sw_name_match(uint8_t *sw_name, struct fcf_record *new_fcf_record) 1247 { 1248 if (sw_name[0] != bf_get(lpfc_fcf_record_switch_name_0, new_fcf_record)) 1249 return 0; 1250 if (sw_name[1] != bf_get(lpfc_fcf_record_switch_name_1, new_fcf_record)) 1251 return 0; 1252 if (sw_name[2] != bf_get(lpfc_fcf_record_switch_name_2, new_fcf_record)) 1253 return 0; 1254 if (sw_name[3] != bf_get(lpfc_fcf_record_switch_name_3, new_fcf_record)) 1255 return 0; 1256 if (sw_name[4] != bf_get(lpfc_fcf_record_switch_name_4, new_fcf_record)) 1257 return 0; 1258 if (sw_name[5] != bf_get(lpfc_fcf_record_switch_name_5, new_fcf_record)) 1259 return 0; 1260 if (sw_name[6] != bf_get(lpfc_fcf_record_switch_name_6, new_fcf_record)) 1261 return 0; 1262 if (sw_name[7] != bf_get(lpfc_fcf_record_switch_name_7, new_fcf_record)) 1263 return 0; 1264 return 1; 1265 } 1266 1267 /** 1268 * lpfc_mac_addr_match - Check if the fcf mac address match. 1269 * @mac_addr: pointer to mac address. 1270 * @new_fcf_record: pointer to fcf record. 1271 * 1272 * This routine compare the fcf record's mac address with HBA's 1273 * FCF mac address. If the mac addresses are identical this function 1274 * returns 1 else return 0. 1275 **/ 1276 static uint32_t 1277 lpfc_mac_addr_match(uint8_t *mac_addr, struct fcf_record *new_fcf_record) 1278 { 1279 if (mac_addr[0] != bf_get(lpfc_fcf_record_mac_0, new_fcf_record)) 1280 return 0; 1281 if (mac_addr[1] != bf_get(lpfc_fcf_record_mac_1, new_fcf_record)) 1282 return 0; 1283 if (mac_addr[2] != bf_get(lpfc_fcf_record_mac_2, new_fcf_record)) 1284 return 0; 1285 if (mac_addr[3] != bf_get(lpfc_fcf_record_mac_3, new_fcf_record)) 1286 return 0; 1287 if (mac_addr[4] != bf_get(lpfc_fcf_record_mac_4, new_fcf_record)) 1288 return 0; 1289 if (mac_addr[5] != bf_get(lpfc_fcf_record_mac_5, new_fcf_record)) 1290 return 0; 1291 return 1; 1292 } 1293 1294 static bool 1295 lpfc_vlan_id_match(uint16_t curr_vlan_id, uint16_t new_vlan_id) 1296 { 1297 return (curr_vlan_id == new_vlan_id); 1298 } 1299 1300 /** 1301 * lpfc_update_fcf_record - Update driver fcf record 1302 * __lpfc_update_fcf_record_pri - update the lpfc_fcf_pri record. 1303 * @phba: pointer to lpfc hba data structure. 1304 * @fcf_index: Index for the lpfc_fcf_record. 1305 * @new_fcf_record: pointer to hba fcf record. 1306 * 1307 * This routine updates the driver FCF priority record from the new HBA FCF 1308 * record. This routine is called with the host lock held. 1309 **/ 1310 static void 1311 __lpfc_update_fcf_record_pri(struct lpfc_hba *phba, uint16_t fcf_index, 1312 struct fcf_record *new_fcf_record 1313 ) 1314 { 1315 struct lpfc_fcf_pri *fcf_pri; 1316 1317 fcf_pri = &phba->fcf.fcf_pri[fcf_index]; 1318 fcf_pri->fcf_rec.fcf_index = fcf_index; 1319 /* FCF record priority */ 1320 fcf_pri->fcf_rec.priority = new_fcf_record->fip_priority; 1321 1322 } 1323 1324 /** 1325 * lpfc_copy_fcf_record - Copy fcf information to lpfc_hba. 1326 * @fcf: pointer to driver fcf record. 1327 * @new_fcf_record: pointer to fcf record. 1328 * 1329 * This routine copies the FCF information from the FCF 1330 * record to lpfc_hba data structure. 1331 **/ 1332 static void 1333 lpfc_copy_fcf_record(struct lpfc_fcf_rec *fcf_rec, 1334 struct fcf_record *new_fcf_record) 1335 { 1336 /* Fabric name */ 1337 fcf_rec->fabric_name[0] = 1338 bf_get(lpfc_fcf_record_fab_name_0, new_fcf_record); 1339 fcf_rec->fabric_name[1] = 1340 bf_get(lpfc_fcf_record_fab_name_1, new_fcf_record); 1341 fcf_rec->fabric_name[2] = 1342 bf_get(lpfc_fcf_record_fab_name_2, new_fcf_record); 1343 fcf_rec->fabric_name[3] = 1344 bf_get(lpfc_fcf_record_fab_name_3, new_fcf_record); 1345 fcf_rec->fabric_name[4] = 1346 bf_get(lpfc_fcf_record_fab_name_4, new_fcf_record); 1347 fcf_rec->fabric_name[5] = 1348 bf_get(lpfc_fcf_record_fab_name_5, new_fcf_record); 1349 fcf_rec->fabric_name[6] = 1350 bf_get(lpfc_fcf_record_fab_name_6, new_fcf_record); 1351 fcf_rec->fabric_name[7] = 1352 bf_get(lpfc_fcf_record_fab_name_7, new_fcf_record); 1353 /* Mac address */ 1354 fcf_rec->mac_addr[0] = bf_get(lpfc_fcf_record_mac_0, new_fcf_record); 1355 fcf_rec->mac_addr[1] = bf_get(lpfc_fcf_record_mac_1, new_fcf_record); 1356 fcf_rec->mac_addr[2] = bf_get(lpfc_fcf_record_mac_2, new_fcf_record); 1357 fcf_rec->mac_addr[3] = bf_get(lpfc_fcf_record_mac_3, new_fcf_record); 1358 fcf_rec->mac_addr[4] = bf_get(lpfc_fcf_record_mac_4, new_fcf_record); 1359 fcf_rec->mac_addr[5] = bf_get(lpfc_fcf_record_mac_5, new_fcf_record); 1360 /* FCF record index */ 1361 fcf_rec->fcf_indx = bf_get(lpfc_fcf_record_fcf_index, new_fcf_record); 1362 /* FCF record priority */ 1363 fcf_rec->priority = new_fcf_record->fip_priority; 1364 /* Switch name */ 1365 fcf_rec->switch_name[0] = 1366 bf_get(lpfc_fcf_record_switch_name_0, new_fcf_record); 1367 fcf_rec->switch_name[1] = 1368 bf_get(lpfc_fcf_record_switch_name_1, new_fcf_record); 1369 fcf_rec->switch_name[2] = 1370 bf_get(lpfc_fcf_record_switch_name_2, new_fcf_record); 1371 fcf_rec->switch_name[3] = 1372 bf_get(lpfc_fcf_record_switch_name_3, new_fcf_record); 1373 fcf_rec->switch_name[4] = 1374 bf_get(lpfc_fcf_record_switch_name_4, new_fcf_record); 1375 fcf_rec->switch_name[5] = 1376 bf_get(lpfc_fcf_record_switch_name_5, new_fcf_record); 1377 fcf_rec->switch_name[6] = 1378 bf_get(lpfc_fcf_record_switch_name_6, new_fcf_record); 1379 fcf_rec->switch_name[7] = 1380 bf_get(lpfc_fcf_record_switch_name_7, new_fcf_record); 1381 } 1382 1383 /** 1384 * lpfc_update_fcf_record - Update driver fcf record 1385 * @phba: pointer to lpfc hba data structure. 1386 * @fcf_rec: pointer to driver fcf record. 1387 * @new_fcf_record: pointer to hba fcf record. 1388 * @addr_mode: address mode to be set to the driver fcf record. 1389 * @vlan_id: vlan tag to be set to the driver fcf record. 1390 * @flag: flag bits to be set to the driver fcf record. 1391 * 1392 * This routine updates the driver FCF record from the new HBA FCF record 1393 * together with the address mode, vlan_id, and other informations. This 1394 * routine is called with the host lock held. 1395 **/ 1396 static void 1397 __lpfc_update_fcf_record(struct lpfc_hba *phba, struct lpfc_fcf_rec *fcf_rec, 1398 struct fcf_record *new_fcf_record, uint32_t addr_mode, 1399 uint16_t vlan_id, uint32_t flag) 1400 { 1401 /* Copy the fields from the HBA's FCF record */ 1402 lpfc_copy_fcf_record(fcf_rec, new_fcf_record); 1403 /* Update other fields of driver FCF record */ 1404 fcf_rec->addr_mode = addr_mode; 1405 fcf_rec->vlan_id = vlan_id; 1406 fcf_rec->flag |= (flag | RECORD_VALID); 1407 __lpfc_update_fcf_record_pri(phba, 1408 bf_get(lpfc_fcf_record_fcf_index, new_fcf_record), 1409 new_fcf_record); 1410 } 1411 1412 /** 1413 * lpfc_register_fcf - Register the FCF with hba. 1414 * @phba: pointer to lpfc hba data structure. 1415 * 1416 * This routine issues a register fcfi mailbox command to register 1417 * the fcf with HBA. 1418 **/ 1419 static void 1420 lpfc_register_fcf(struct lpfc_hba *phba) 1421 { 1422 LPFC_MBOXQ_t *fcf_mbxq; 1423 int rc; 1424 1425 spin_lock_irq(&phba->hbalock); 1426 /* If the FCF is not available do nothing. */ 1427 if (!(phba->fcf.fcf_flag & FCF_AVAILABLE)) { 1428 phba->hba_flag &= ~(FCF_TS_INPROG | FCF_RR_INPROG); 1429 spin_unlock_irq(&phba->hbalock); 1430 return; 1431 } 1432 1433 /* The FCF is already registered, start discovery */ 1434 if (phba->fcf.fcf_flag & FCF_REGISTERED) { 1435 phba->fcf.fcf_flag |= (FCF_SCAN_DONE | FCF_IN_USE); 1436 phba->hba_flag &= ~FCF_TS_INPROG; 1437 if (phba->pport->port_state != LPFC_FLOGI && 1438 phba->pport->fc_flag & FC_FABRIC) { 1439 phba->hba_flag |= FCF_RR_INPROG; 1440 spin_unlock_irq(&phba->hbalock); 1441 lpfc_initial_flogi(phba->pport); 1442 return; 1443 } 1444 spin_unlock_irq(&phba->hbalock); 1445 return; 1446 } 1447 spin_unlock_irq(&phba->hbalock); 1448 1449 fcf_mbxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 1450 if (!fcf_mbxq) { 1451 spin_lock_irq(&phba->hbalock); 1452 phba->hba_flag &= ~(FCF_TS_INPROG | FCF_RR_INPROG); 1453 spin_unlock_irq(&phba->hbalock); 1454 return; 1455 } 1456 1457 lpfc_reg_fcfi(phba, fcf_mbxq); 1458 fcf_mbxq->vport = phba->pport; 1459 fcf_mbxq->mbox_cmpl = lpfc_mbx_cmpl_reg_fcfi; 1460 rc = lpfc_sli_issue_mbox(phba, fcf_mbxq, MBX_NOWAIT); 1461 if (rc == MBX_NOT_FINISHED) { 1462 spin_lock_irq(&phba->hbalock); 1463 phba->hba_flag &= ~(FCF_TS_INPROG | FCF_RR_INPROG); 1464 spin_unlock_irq(&phba->hbalock); 1465 mempool_free(fcf_mbxq, phba->mbox_mem_pool); 1466 } 1467 1468 return; 1469 } 1470 1471 /** 1472 * lpfc_match_fcf_conn_list - Check if the FCF record can be used for discovery. 1473 * @phba: pointer to lpfc hba data structure. 1474 * @new_fcf_record: pointer to fcf record. 1475 * @boot_flag: Indicates if this record used by boot bios. 1476 * @addr_mode: The address mode to be used by this FCF 1477 * @vlan_id: The vlan id to be used as vlan tagging by this FCF. 1478 * 1479 * This routine compare the fcf record with connect list obtained from the 1480 * config region to decide if this FCF can be used for SAN discovery. It returns 1481 * 1 if this record can be used for SAN discovery else return zero. If this FCF 1482 * record can be used for SAN discovery, the boot_flag will indicate if this FCF 1483 * is used by boot bios and addr_mode will indicate the addressing mode to be 1484 * used for this FCF when the function returns. 1485 * If the FCF record need to be used with a particular vlan id, the vlan is 1486 * set in the vlan_id on return of the function. If not VLAN tagging need to 1487 * be used with the FCF vlan_id will be set to LPFC_FCOE_NULL_VID; 1488 **/ 1489 static int 1490 lpfc_match_fcf_conn_list(struct lpfc_hba *phba, 1491 struct fcf_record *new_fcf_record, 1492 uint32_t *boot_flag, uint32_t *addr_mode, 1493 uint16_t *vlan_id) 1494 { 1495 struct lpfc_fcf_conn_entry *conn_entry; 1496 int i, j, fcf_vlan_id = 0; 1497 1498 /* Find the lowest VLAN id in the FCF record */ 1499 for (i = 0; i < 512; i++) { 1500 if (new_fcf_record->vlan_bitmap[i]) { 1501 fcf_vlan_id = i * 8; 1502 j = 0; 1503 while (!((new_fcf_record->vlan_bitmap[i] >> j) & 1)) { 1504 j++; 1505 fcf_vlan_id++; 1506 } 1507 break; 1508 } 1509 } 1510 1511 /* FCF not valid/available or solicitation in progress */ 1512 if (!bf_get(lpfc_fcf_record_fcf_avail, new_fcf_record) || 1513 !bf_get(lpfc_fcf_record_fcf_valid, new_fcf_record) || 1514 bf_get(lpfc_fcf_record_fcf_sol, new_fcf_record)) 1515 return 0; 1516 1517 if (!(phba->hba_flag & HBA_FIP_SUPPORT)) { 1518 *boot_flag = 0; 1519 *addr_mode = bf_get(lpfc_fcf_record_mac_addr_prov, 1520 new_fcf_record); 1521 if (phba->valid_vlan) 1522 *vlan_id = phba->vlan_id; 1523 else 1524 *vlan_id = LPFC_FCOE_NULL_VID; 1525 return 1; 1526 } 1527 1528 /* 1529 * If there are no FCF connection table entry, driver connect to all 1530 * FCFs. 1531 */ 1532 if (list_empty(&phba->fcf_conn_rec_list)) { 1533 *boot_flag = 0; 1534 *addr_mode = bf_get(lpfc_fcf_record_mac_addr_prov, 1535 new_fcf_record); 1536 1537 /* 1538 * When there are no FCF connect entries, use driver's default 1539 * addressing mode - FPMA. 1540 */ 1541 if (*addr_mode & LPFC_FCF_FPMA) 1542 *addr_mode = LPFC_FCF_FPMA; 1543 1544 /* If FCF record report a vlan id use that vlan id */ 1545 if (fcf_vlan_id) 1546 *vlan_id = fcf_vlan_id; 1547 else 1548 *vlan_id = LPFC_FCOE_NULL_VID; 1549 return 1; 1550 } 1551 1552 list_for_each_entry(conn_entry, 1553 &phba->fcf_conn_rec_list, list) { 1554 if (!(conn_entry->conn_rec.flags & FCFCNCT_VALID)) 1555 continue; 1556 1557 if ((conn_entry->conn_rec.flags & FCFCNCT_FBNM_VALID) && 1558 !lpfc_fab_name_match(conn_entry->conn_rec.fabric_name, 1559 new_fcf_record)) 1560 continue; 1561 if ((conn_entry->conn_rec.flags & FCFCNCT_SWNM_VALID) && 1562 !lpfc_sw_name_match(conn_entry->conn_rec.switch_name, 1563 new_fcf_record)) 1564 continue; 1565 if (conn_entry->conn_rec.flags & FCFCNCT_VLAN_VALID) { 1566 /* 1567 * If the vlan bit map does not have the bit set for the 1568 * vlan id to be used, then it is not a match. 1569 */ 1570 if (!(new_fcf_record->vlan_bitmap 1571 [conn_entry->conn_rec.vlan_tag / 8] & 1572 (1 << (conn_entry->conn_rec.vlan_tag % 8)))) 1573 continue; 1574 } 1575 1576 /* 1577 * If connection record does not support any addressing mode, 1578 * skip the FCF record. 1579 */ 1580 if (!(bf_get(lpfc_fcf_record_mac_addr_prov, new_fcf_record) 1581 & (LPFC_FCF_FPMA | LPFC_FCF_SPMA))) 1582 continue; 1583 1584 /* 1585 * Check if the connection record specifies a required 1586 * addressing mode. 1587 */ 1588 if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) && 1589 !(conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED)) { 1590 1591 /* 1592 * If SPMA required but FCF not support this continue. 1593 */ 1594 if ((conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) && 1595 !(bf_get(lpfc_fcf_record_mac_addr_prov, 1596 new_fcf_record) & LPFC_FCF_SPMA)) 1597 continue; 1598 1599 /* 1600 * If FPMA required but FCF not support this continue. 1601 */ 1602 if (!(conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) && 1603 !(bf_get(lpfc_fcf_record_mac_addr_prov, 1604 new_fcf_record) & LPFC_FCF_FPMA)) 1605 continue; 1606 } 1607 1608 /* 1609 * This fcf record matches filtering criteria. 1610 */ 1611 if (conn_entry->conn_rec.flags & FCFCNCT_BOOT) 1612 *boot_flag = 1; 1613 else 1614 *boot_flag = 0; 1615 1616 /* 1617 * If user did not specify any addressing mode, or if the 1618 * preferred addressing mode specified by user is not supported 1619 * by FCF, allow fabric to pick the addressing mode. 1620 */ 1621 *addr_mode = bf_get(lpfc_fcf_record_mac_addr_prov, 1622 new_fcf_record); 1623 /* 1624 * If the user specified a required address mode, assign that 1625 * address mode 1626 */ 1627 if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) && 1628 (!(conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED))) 1629 *addr_mode = (conn_entry->conn_rec.flags & 1630 FCFCNCT_AM_SPMA) ? 1631 LPFC_FCF_SPMA : LPFC_FCF_FPMA; 1632 /* 1633 * If the user specified a preferred address mode, use the 1634 * addr mode only if FCF support the addr_mode. 1635 */ 1636 else if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) && 1637 (conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED) && 1638 (conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) && 1639 (*addr_mode & LPFC_FCF_SPMA)) 1640 *addr_mode = LPFC_FCF_SPMA; 1641 else if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) && 1642 (conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED) && 1643 !(conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) && 1644 (*addr_mode & LPFC_FCF_FPMA)) 1645 *addr_mode = LPFC_FCF_FPMA; 1646 1647 /* If matching connect list has a vlan id, use it */ 1648 if (conn_entry->conn_rec.flags & FCFCNCT_VLAN_VALID) 1649 *vlan_id = conn_entry->conn_rec.vlan_tag; 1650 /* 1651 * If no vlan id is specified in connect list, use the vlan id 1652 * in the FCF record 1653 */ 1654 else if (fcf_vlan_id) 1655 *vlan_id = fcf_vlan_id; 1656 else 1657 *vlan_id = LPFC_FCOE_NULL_VID; 1658 1659 return 1; 1660 } 1661 1662 return 0; 1663 } 1664 1665 /** 1666 * lpfc_check_pending_fcoe_event - Check if there is pending fcoe event. 1667 * @phba: pointer to lpfc hba data structure. 1668 * @unreg_fcf: Unregister FCF if FCF table need to be re-scaned. 1669 * 1670 * This function check if there is any fcoe event pending while driver 1671 * scan FCF entries. If there is any pending event, it will restart the 1672 * FCF saning and return 1 else return 0. 1673 */ 1674 int 1675 lpfc_check_pending_fcoe_event(struct lpfc_hba *phba, uint8_t unreg_fcf) 1676 { 1677 /* 1678 * If the Link is up and no FCoE events while in the 1679 * FCF discovery, no need to restart FCF discovery. 1680 */ 1681 if ((phba->link_state >= LPFC_LINK_UP) && 1682 (phba->fcoe_eventtag == phba->fcoe_eventtag_at_fcf_scan)) 1683 return 0; 1684 1685 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 1686 "2768 Pending link or FCF event during current " 1687 "handling of the previous event: link_state:x%x, " 1688 "evt_tag_at_scan:x%x, evt_tag_current:x%x\n", 1689 phba->link_state, phba->fcoe_eventtag_at_fcf_scan, 1690 phba->fcoe_eventtag); 1691 1692 spin_lock_irq(&phba->hbalock); 1693 phba->fcf.fcf_flag &= ~FCF_AVAILABLE; 1694 spin_unlock_irq(&phba->hbalock); 1695 1696 if (phba->link_state >= LPFC_LINK_UP) { 1697 lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY, 1698 "2780 Restart FCF table scan due to " 1699 "pending FCF event:evt_tag_at_scan:x%x, " 1700 "evt_tag_current:x%x\n", 1701 phba->fcoe_eventtag_at_fcf_scan, 1702 phba->fcoe_eventtag); 1703 lpfc_sli4_fcf_scan_read_fcf_rec(phba, LPFC_FCOE_FCF_GET_FIRST); 1704 } else { 1705 /* 1706 * Do not continue FCF discovery and clear FCF_TS_INPROG 1707 * flag 1708 */ 1709 lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY, 1710 "2833 Stop FCF discovery process due to link " 1711 "state change (x%x)\n", phba->link_state); 1712 spin_lock_irq(&phba->hbalock); 1713 phba->hba_flag &= ~(FCF_TS_INPROG | FCF_RR_INPROG); 1714 phba->fcf.fcf_flag &= ~(FCF_REDISC_FOV | FCF_DISCOVERY); 1715 spin_unlock_irq(&phba->hbalock); 1716 } 1717 1718 /* Unregister the currently registered FCF if required */ 1719 if (unreg_fcf) { 1720 spin_lock_irq(&phba->hbalock); 1721 phba->fcf.fcf_flag &= ~FCF_REGISTERED; 1722 spin_unlock_irq(&phba->hbalock); 1723 lpfc_sli4_unregister_fcf(phba); 1724 } 1725 return 1; 1726 } 1727 1728 /** 1729 * lpfc_sli4_new_fcf_random_select - Randomly select an eligible new fcf record 1730 * @phba: pointer to lpfc hba data structure. 1731 * @fcf_cnt: number of eligible fcf record seen so far. 1732 * 1733 * This function makes an running random selection decision on FCF record to 1734 * use through a sequence of @fcf_cnt eligible FCF records with equal 1735 * probability. To perform integer manunipulation of random numbers with 1736 * size unit32_t, the lower 16 bits of the 32-bit random number returned 1737 * from prandom_u32() are taken as the random random number generated. 1738 * 1739 * Returns true when outcome is for the newly read FCF record should be 1740 * chosen; otherwise, return false when outcome is for keeping the previously 1741 * chosen FCF record. 1742 **/ 1743 static bool 1744 lpfc_sli4_new_fcf_random_select(struct lpfc_hba *phba, uint32_t fcf_cnt) 1745 { 1746 uint32_t rand_num; 1747 1748 /* Get 16-bit uniform random number */ 1749 rand_num = 0xFFFF & prandom_u32(); 1750 1751 /* Decision with probability 1/fcf_cnt */ 1752 if ((fcf_cnt * rand_num) < 0xFFFF) 1753 return true; 1754 else 1755 return false; 1756 } 1757 1758 /** 1759 * lpfc_sli4_fcf_rec_mbox_parse - Parse read_fcf mbox command. 1760 * @phba: pointer to lpfc hba data structure. 1761 * @mboxq: pointer to mailbox object. 1762 * @next_fcf_index: pointer to holder of next fcf index. 1763 * 1764 * This routine parses the non-embedded fcf mailbox command by performing the 1765 * necessarily error checking, non-embedded read FCF record mailbox command 1766 * SGE parsing, and endianness swapping. 1767 * 1768 * Returns the pointer to the new FCF record in the non-embedded mailbox 1769 * command DMA memory if successfully, other NULL. 1770 */ 1771 static struct fcf_record * 1772 lpfc_sli4_fcf_rec_mbox_parse(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq, 1773 uint16_t *next_fcf_index) 1774 { 1775 void *virt_addr; 1776 dma_addr_t phys_addr; 1777 struct lpfc_mbx_sge sge; 1778 struct lpfc_mbx_read_fcf_tbl *read_fcf; 1779 uint32_t shdr_status, shdr_add_status; 1780 union lpfc_sli4_cfg_shdr *shdr; 1781 struct fcf_record *new_fcf_record; 1782 1783 /* Get the first SGE entry from the non-embedded DMA memory. This 1784 * routine only uses a single SGE. 1785 */ 1786 lpfc_sli4_mbx_sge_get(mboxq, 0, &sge); 1787 phys_addr = getPaddr(sge.pa_hi, sge.pa_lo); 1788 if (unlikely(!mboxq->sge_array)) { 1789 lpfc_printf_log(phba, KERN_ERR, LOG_MBOX, 1790 "2524 Failed to get the non-embedded SGE " 1791 "virtual address\n"); 1792 return NULL; 1793 } 1794 virt_addr = mboxq->sge_array->addr[0]; 1795 1796 shdr = (union lpfc_sli4_cfg_shdr *)virt_addr; 1797 lpfc_sli_pcimem_bcopy(shdr, shdr, 1798 sizeof(union lpfc_sli4_cfg_shdr)); 1799 shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response); 1800 shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response); 1801 if (shdr_status || shdr_add_status) { 1802 if (shdr_status == STATUS_FCF_TABLE_EMPTY) 1803 lpfc_printf_log(phba, KERN_ERR, LOG_FIP, 1804 "2726 READ_FCF_RECORD Indicates empty " 1805 "FCF table.\n"); 1806 else 1807 lpfc_printf_log(phba, KERN_ERR, LOG_FIP, 1808 "2521 READ_FCF_RECORD mailbox failed " 1809 "with status x%x add_status x%x, " 1810 "mbx\n", shdr_status, shdr_add_status); 1811 return NULL; 1812 } 1813 1814 /* Interpreting the returned information of the FCF record */ 1815 read_fcf = (struct lpfc_mbx_read_fcf_tbl *)virt_addr; 1816 lpfc_sli_pcimem_bcopy(read_fcf, read_fcf, 1817 sizeof(struct lpfc_mbx_read_fcf_tbl)); 1818 *next_fcf_index = bf_get(lpfc_mbx_read_fcf_tbl_nxt_vindx, read_fcf); 1819 new_fcf_record = (struct fcf_record *)(virt_addr + 1820 sizeof(struct lpfc_mbx_read_fcf_tbl)); 1821 lpfc_sli_pcimem_bcopy(new_fcf_record, new_fcf_record, 1822 offsetof(struct fcf_record, vlan_bitmap)); 1823 new_fcf_record->word137 = le32_to_cpu(new_fcf_record->word137); 1824 new_fcf_record->word138 = le32_to_cpu(new_fcf_record->word138); 1825 1826 return new_fcf_record; 1827 } 1828 1829 /** 1830 * lpfc_sli4_log_fcf_record_info - Log the information of a fcf record 1831 * @phba: pointer to lpfc hba data structure. 1832 * @fcf_record: pointer to the fcf record. 1833 * @vlan_id: the lowest vlan identifier associated to this fcf record. 1834 * @next_fcf_index: the index to the next fcf record in hba's fcf table. 1835 * 1836 * This routine logs the detailed FCF record if the LOG_FIP loggin is 1837 * enabled. 1838 **/ 1839 static void 1840 lpfc_sli4_log_fcf_record_info(struct lpfc_hba *phba, 1841 struct fcf_record *fcf_record, 1842 uint16_t vlan_id, 1843 uint16_t next_fcf_index) 1844 { 1845 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 1846 "2764 READ_FCF_RECORD:\n" 1847 "\tFCF_Index : x%x\n" 1848 "\tFCF_Avail : x%x\n" 1849 "\tFCF_Valid : x%x\n" 1850 "\tFCF_SOL : x%x\n" 1851 "\tFIP_Priority : x%x\n" 1852 "\tMAC_Provider : x%x\n" 1853 "\tLowest VLANID : x%x\n" 1854 "\tFCF_MAC Addr : x%x:%x:%x:%x:%x:%x\n" 1855 "\tFabric_Name : x%x:%x:%x:%x:%x:%x:%x:%x\n" 1856 "\tSwitch_Name : x%x:%x:%x:%x:%x:%x:%x:%x\n" 1857 "\tNext_FCF_Index: x%x\n", 1858 bf_get(lpfc_fcf_record_fcf_index, fcf_record), 1859 bf_get(lpfc_fcf_record_fcf_avail, fcf_record), 1860 bf_get(lpfc_fcf_record_fcf_valid, fcf_record), 1861 bf_get(lpfc_fcf_record_fcf_sol, fcf_record), 1862 fcf_record->fip_priority, 1863 bf_get(lpfc_fcf_record_mac_addr_prov, fcf_record), 1864 vlan_id, 1865 bf_get(lpfc_fcf_record_mac_0, fcf_record), 1866 bf_get(lpfc_fcf_record_mac_1, fcf_record), 1867 bf_get(lpfc_fcf_record_mac_2, fcf_record), 1868 bf_get(lpfc_fcf_record_mac_3, fcf_record), 1869 bf_get(lpfc_fcf_record_mac_4, fcf_record), 1870 bf_get(lpfc_fcf_record_mac_5, fcf_record), 1871 bf_get(lpfc_fcf_record_fab_name_0, fcf_record), 1872 bf_get(lpfc_fcf_record_fab_name_1, fcf_record), 1873 bf_get(lpfc_fcf_record_fab_name_2, fcf_record), 1874 bf_get(lpfc_fcf_record_fab_name_3, fcf_record), 1875 bf_get(lpfc_fcf_record_fab_name_4, fcf_record), 1876 bf_get(lpfc_fcf_record_fab_name_5, fcf_record), 1877 bf_get(lpfc_fcf_record_fab_name_6, fcf_record), 1878 bf_get(lpfc_fcf_record_fab_name_7, fcf_record), 1879 bf_get(lpfc_fcf_record_switch_name_0, fcf_record), 1880 bf_get(lpfc_fcf_record_switch_name_1, fcf_record), 1881 bf_get(lpfc_fcf_record_switch_name_2, fcf_record), 1882 bf_get(lpfc_fcf_record_switch_name_3, fcf_record), 1883 bf_get(lpfc_fcf_record_switch_name_4, fcf_record), 1884 bf_get(lpfc_fcf_record_switch_name_5, fcf_record), 1885 bf_get(lpfc_fcf_record_switch_name_6, fcf_record), 1886 bf_get(lpfc_fcf_record_switch_name_7, fcf_record), 1887 next_fcf_index); 1888 } 1889 1890 /** 1891 lpfc_sli4_fcf_record_match - testing new FCF record for matching existing FCF 1892 * @phba: pointer to lpfc hba data structure. 1893 * @fcf_rec: pointer to an existing FCF record. 1894 * @new_fcf_record: pointer to a new FCF record. 1895 * @new_vlan_id: vlan id from the new FCF record. 1896 * 1897 * This function performs matching test of a new FCF record against an existing 1898 * FCF record. If the new_vlan_id passed in is LPFC_FCOE_IGNORE_VID, vlan id 1899 * will not be used as part of the FCF record matching criteria. 1900 * 1901 * Returns true if all the fields matching, otherwise returns false. 1902 */ 1903 static bool 1904 lpfc_sli4_fcf_record_match(struct lpfc_hba *phba, 1905 struct lpfc_fcf_rec *fcf_rec, 1906 struct fcf_record *new_fcf_record, 1907 uint16_t new_vlan_id) 1908 { 1909 if (new_vlan_id != LPFC_FCOE_IGNORE_VID) 1910 if (!lpfc_vlan_id_match(fcf_rec->vlan_id, new_vlan_id)) 1911 return false; 1912 if (!lpfc_mac_addr_match(fcf_rec->mac_addr, new_fcf_record)) 1913 return false; 1914 if (!lpfc_sw_name_match(fcf_rec->switch_name, new_fcf_record)) 1915 return false; 1916 if (!lpfc_fab_name_match(fcf_rec->fabric_name, new_fcf_record)) 1917 return false; 1918 if (fcf_rec->priority != new_fcf_record->fip_priority) 1919 return false; 1920 return true; 1921 } 1922 1923 /** 1924 * lpfc_sli4_fcf_rr_next_proc - processing next roundrobin fcf 1925 * @vport: Pointer to vport object. 1926 * @fcf_index: index to next fcf. 1927 * 1928 * This function processing the roundrobin fcf failover to next fcf index. 1929 * When this function is invoked, there will be a current fcf registered 1930 * for flogi. 1931 * Return: 0 for continue retrying flogi on currently registered fcf; 1932 * 1 for stop flogi on currently registered fcf; 1933 */ 1934 int lpfc_sli4_fcf_rr_next_proc(struct lpfc_vport *vport, uint16_t fcf_index) 1935 { 1936 struct lpfc_hba *phba = vport->phba; 1937 int rc; 1938 1939 if (fcf_index == LPFC_FCOE_FCF_NEXT_NONE) { 1940 spin_lock_irq(&phba->hbalock); 1941 if (phba->hba_flag & HBA_DEVLOSS_TMO) { 1942 spin_unlock_irq(&phba->hbalock); 1943 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 1944 "2872 Devloss tmo with no eligible " 1945 "FCF, unregister in-use FCF (x%x) " 1946 "and rescan FCF table\n", 1947 phba->fcf.current_rec.fcf_indx); 1948 lpfc_unregister_fcf_rescan(phba); 1949 goto stop_flogi_current_fcf; 1950 } 1951 /* Mark the end to FLOGI roundrobin failover */ 1952 phba->hba_flag &= ~FCF_RR_INPROG; 1953 /* Allow action to new fcf asynchronous event */ 1954 phba->fcf.fcf_flag &= ~(FCF_AVAILABLE | FCF_SCAN_DONE); 1955 spin_unlock_irq(&phba->hbalock); 1956 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 1957 "2865 No FCF available, stop roundrobin FCF " 1958 "failover and change port state:x%x/x%x\n", 1959 phba->pport->port_state, LPFC_VPORT_UNKNOWN); 1960 phba->pport->port_state = LPFC_VPORT_UNKNOWN; 1961 goto stop_flogi_current_fcf; 1962 } else { 1963 lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_ELS, 1964 "2794 Try FLOGI roundrobin FCF failover to " 1965 "(x%x)\n", fcf_index); 1966 rc = lpfc_sli4_fcf_rr_read_fcf_rec(phba, fcf_index); 1967 if (rc) 1968 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP | LOG_ELS, 1969 "2761 FLOGI roundrobin FCF failover " 1970 "failed (rc:x%x) to read FCF (x%x)\n", 1971 rc, phba->fcf.current_rec.fcf_indx); 1972 else 1973 goto stop_flogi_current_fcf; 1974 } 1975 return 0; 1976 1977 stop_flogi_current_fcf: 1978 lpfc_can_disctmo(vport); 1979 return 1; 1980 } 1981 1982 /** 1983 * lpfc_sli4_fcf_pri_list_del 1984 * @phba: pointer to lpfc hba data structure. 1985 * @fcf_index the index of the fcf record to delete 1986 * This routine checks the on list flag of the fcf_index to be deleted. 1987 * If it is one the list then it is removed from the list, and the flag 1988 * is cleared. This routine grab the hbalock before removing the fcf 1989 * record from the list. 1990 **/ 1991 static void lpfc_sli4_fcf_pri_list_del(struct lpfc_hba *phba, 1992 uint16_t fcf_index) 1993 { 1994 struct lpfc_fcf_pri *new_fcf_pri; 1995 1996 new_fcf_pri = &phba->fcf.fcf_pri[fcf_index]; 1997 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 1998 "3058 deleting idx x%x pri x%x flg x%x\n", 1999 fcf_index, new_fcf_pri->fcf_rec.priority, 2000 new_fcf_pri->fcf_rec.flag); 2001 spin_lock_irq(&phba->hbalock); 2002 if (new_fcf_pri->fcf_rec.flag & LPFC_FCF_ON_PRI_LIST) { 2003 if (phba->fcf.current_rec.priority == 2004 new_fcf_pri->fcf_rec.priority) 2005 phba->fcf.eligible_fcf_cnt--; 2006 list_del_init(&new_fcf_pri->list); 2007 new_fcf_pri->fcf_rec.flag &= ~LPFC_FCF_ON_PRI_LIST; 2008 } 2009 spin_unlock_irq(&phba->hbalock); 2010 } 2011 2012 /** 2013 * lpfc_sli4_set_fcf_flogi_fail 2014 * @phba: pointer to lpfc hba data structure. 2015 * @fcf_index the index of the fcf record to update 2016 * This routine acquires the hbalock and then set the LPFC_FCF_FLOGI_FAILED 2017 * flag so the the round robin slection for the particular priority level 2018 * will try a different fcf record that does not have this bit set. 2019 * If the fcf record is re-read for any reason this flag is cleared brfore 2020 * adding it to the priority list. 2021 **/ 2022 void 2023 lpfc_sli4_set_fcf_flogi_fail(struct lpfc_hba *phba, uint16_t fcf_index) 2024 { 2025 struct lpfc_fcf_pri *new_fcf_pri; 2026 new_fcf_pri = &phba->fcf.fcf_pri[fcf_index]; 2027 spin_lock_irq(&phba->hbalock); 2028 new_fcf_pri->fcf_rec.flag |= LPFC_FCF_FLOGI_FAILED; 2029 spin_unlock_irq(&phba->hbalock); 2030 } 2031 2032 /** 2033 * lpfc_sli4_fcf_pri_list_add 2034 * @phba: pointer to lpfc hba data structure. 2035 * @fcf_index the index of the fcf record to add 2036 * This routine checks the priority of the fcf_index to be added. 2037 * If it is a lower priority than the current head of the fcf_pri list 2038 * then it is added to the list in the right order. 2039 * If it is the same priority as the current head of the list then it 2040 * is added to the head of the list and its bit in the rr_bmask is set. 2041 * If the fcf_index to be added is of a higher priority than the current 2042 * head of the list then the rr_bmask is cleared, its bit is set in the 2043 * rr_bmask and it is added to the head of the list. 2044 * returns: 2045 * 0=success 1=failure 2046 **/ 2047 int lpfc_sli4_fcf_pri_list_add(struct lpfc_hba *phba, uint16_t fcf_index, 2048 struct fcf_record *new_fcf_record) 2049 { 2050 uint16_t current_fcf_pri; 2051 uint16_t last_index; 2052 struct lpfc_fcf_pri *fcf_pri; 2053 struct lpfc_fcf_pri *next_fcf_pri; 2054 struct lpfc_fcf_pri *new_fcf_pri; 2055 int ret; 2056 2057 new_fcf_pri = &phba->fcf.fcf_pri[fcf_index]; 2058 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2059 "3059 adding idx x%x pri x%x flg x%x\n", 2060 fcf_index, new_fcf_record->fip_priority, 2061 new_fcf_pri->fcf_rec.flag); 2062 spin_lock_irq(&phba->hbalock); 2063 if (new_fcf_pri->fcf_rec.flag & LPFC_FCF_ON_PRI_LIST) 2064 list_del_init(&new_fcf_pri->list); 2065 new_fcf_pri->fcf_rec.fcf_index = fcf_index; 2066 new_fcf_pri->fcf_rec.priority = new_fcf_record->fip_priority; 2067 if (list_empty(&phba->fcf.fcf_pri_list)) { 2068 list_add(&new_fcf_pri->list, &phba->fcf.fcf_pri_list); 2069 ret = lpfc_sli4_fcf_rr_index_set(phba, 2070 new_fcf_pri->fcf_rec.fcf_index); 2071 goto out; 2072 } 2073 2074 last_index = find_first_bit(phba->fcf.fcf_rr_bmask, 2075 LPFC_SLI4_FCF_TBL_INDX_MAX); 2076 if (last_index >= LPFC_SLI4_FCF_TBL_INDX_MAX) { 2077 ret = 0; /* Empty rr list */ 2078 goto out; 2079 } 2080 current_fcf_pri = phba->fcf.fcf_pri[last_index].fcf_rec.priority; 2081 if (new_fcf_pri->fcf_rec.priority <= current_fcf_pri) { 2082 list_add(&new_fcf_pri->list, &phba->fcf.fcf_pri_list); 2083 if (new_fcf_pri->fcf_rec.priority < current_fcf_pri) { 2084 memset(phba->fcf.fcf_rr_bmask, 0, 2085 sizeof(*phba->fcf.fcf_rr_bmask)); 2086 /* fcfs_at_this_priority_level = 1; */ 2087 phba->fcf.eligible_fcf_cnt = 1; 2088 } else 2089 /* fcfs_at_this_priority_level++; */ 2090 phba->fcf.eligible_fcf_cnt++; 2091 ret = lpfc_sli4_fcf_rr_index_set(phba, 2092 new_fcf_pri->fcf_rec.fcf_index); 2093 goto out; 2094 } 2095 2096 list_for_each_entry_safe(fcf_pri, next_fcf_pri, 2097 &phba->fcf.fcf_pri_list, list) { 2098 if (new_fcf_pri->fcf_rec.priority <= 2099 fcf_pri->fcf_rec.priority) { 2100 if (fcf_pri->list.prev == &phba->fcf.fcf_pri_list) 2101 list_add(&new_fcf_pri->list, 2102 &phba->fcf.fcf_pri_list); 2103 else 2104 list_add(&new_fcf_pri->list, 2105 &((struct lpfc_fcf_pri *) 2106 fcf_pri->list.prev)->list); 2107 ret = 0; 2108 goto out; 2109 } else if (fcf_pri->list.next == &phba->fcf.fcf_pri_list 2110 || new_fcf_pri->fcf_rec.priority < 2111 next_fcf_pri->fcf_rec.priority) { 2112 list_add(&new_fcf_pri->list, &fcf_pri->list); 2113 ret = 0; 2114 goto out; 2115 } 2116 if (new_fcf_pri->fcf_rec.priority > fcf_pri->fcf_rec.priority) 2117 continue; 2118 2119 } 2120 ret = 1; 2121 out: 2122 /* we use = instead of |= to clear the FLOGI_FAILED flag. */ 2123 new_fcf_pri->fcf_rec.flag = LPFC_FCF_ON_PRI_LIST; 2124 spin_unlock_irq(&phba->hbalock); 2125 return ret; 2126 } 2127 2128 /** 2129 * lpfc_mbx_cmpl_fcf_scan_read_fcf_rec - fcf scan read_fcf mbox cmpl handler. 2130 * @phba: pointer to lpfc hba data structure. 2131 * @mboxq: pointer to mailbox object. 2132 * 2133 * This function iterates through all the fcf records available in 2134 * HBA and chooses the optimal FCF record for discovery. After finding 2135 * the FCF for discovery it registers the FCF record and kicks start 2136 * discovery. 2137 * If FCF_IN_USE flag is set in currently used FCF, the routine tries to 2138 * use an FCF record which matches fabric name and mac address of the 2139 * currently used FCF record. 2140 * If the driver supports only one FCF, it will try to use the FCF record 2141 * used by BOOT_BIOS. 2142 */ 2143 void 2144 lpfc_mbx_cmpl_fcf_scan_read_fcf_rec(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq) 2145 { 2146 struct fcf_record *new_fcf_record; 2147 uint32_t boot_flag, addr_mode; 2148 uint16_t fcf_index, next_fcf_index; 2149 struct lpfc_fcf_rec *fcf_rec = NULL; 2150 uint16_t vlan_id; 2151 uint32_t seed; 2152 bool select_new_fcf; 2153 int rc; 2154 2155 /* If there is pending FCoE event restart FCF table scan */ 2156 if (lpfc_check_pending_fcoe_event(phba, LPFC_SKIP_UNREG_FCF)) { 2157 lpfc_sli4_mbox_cmd_free(phba, mboxq); 2158 return; 2159 } 2160 2161 /* Parse the FCF record from the non-embedded mailbox command */ 2162 new_fcf_record = lpfc_sli4_fcf_rec_mbox_parse(phba, mboxq, 2163 &next_fcf_index); 2164 if (!new_fcf_record) { 2165 lpfc_printf_log(phba, KERN_ERR, LOG_FIP, 2166 "2765 Mailbox command READ_FCF_RECORD " 2167 "failed to retrieve a FCF record.\n"); 2168 /* Let next new FCF event trigger fast failover */ 2169 spin_lock_irq(&phba->hbalock); 2170 phba->hba_flag &= ~FCF_TS_INPROG; 2171 spin_unlock_irq(&phba->hbalock); 2172 lpfc_sli4_mbox_cmd_free(phba, mboxq); 2173 return; 2174 } 2175 2176 /* Check the FCF record against the connection list */ 2177 rc = lpfc_match_fcf_conn_list(phba, new_fcf_record, &boot_flag, 2178 &addr_mode, &vlan_id); 2179 2180 /* Log the FCF record information if turned on */ 2181 lpfc_sli4_log_fcf_record_info(phba, new_fcf_record, vlan_id, 2182 next_fcf_index); 2183 2184 /* 2185 * If the fcf record does not match with connect list entries 2186 * read the next entry; otherwise, this is an eligible FCF 2187 * record for roundrobin FCF failover. 2188 */ 2189 if (!rc) { 2190 lpfc_sli4_fcf_pri_list_del(phba, 2191 bf_get(lpfc_fcf_record_fcf_index, 2192 new_fcf_record)); 2193 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP, 2194 "2781 FCF (x%x) failed connection " 2195 "list check: (x%x/x%x/%x)\n", 2196 bf_get(lpfc_fcf_record_fcf_index, 2197 new_fcf_record), 2198 bf_get(lpfc_fcf_record_fcf_avail, 2199 new_fcf_record), 2200 bf_get(lpfc_fcf_record_fcf_valid, 2201 new_fcf_record), 2202 bf_get(lpfc_fcf_record_fcf_sol, 2203 new_fcf_record)); 2204 if ((phba->fcf.fcf_flag & FCF_IN_USE) && 2205 lpfc_sli4_fcf_record_match(phba, &phba->fcf.current_rec, 2206 new_fcf_record, LPFC_FCOE_IGNORE_VID)) { 2207 if (bf_get(lpfc_fcf_record_fcf_index, new_fcf_record) != 2208 phba->fcf.current_rec.fcf_indx) { 2209 lpfc_printf_log(phba, KERN_ERR, LOG_FIP, 2210 "2862 FCF (x%x) matches property " 2211 "of in-use FCF (x%x)\n", 2212 bf_get(lpfc_fcf_record_fcf_index, 2213 new_fcf_record), 2214 phba->fcf.current_rec.fcf_indx); 2215 goto read_next_fcf; 2216 } 2217 /* 2218 * In case the current in-use FCF record becomes 2219 * invalid/unavailable during FCF discovery that 2220 * was not triggered by fast FCF failover process, 2221 * treat it as fast FCF failover. 2222 */ 2223 if (!(phba->fcf.fcf_flag & FCF_REDISC_PEND) && 2224 !(phba->fcf.fcf_flag & FCF_REDISC_FOV)) { 2225 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP, 2226 "2835 Invalid in-use FCF " 2227 "(x%x), enter FCF failover " 2228 "table scan.\n", 2229 phba->fcf.current_rec.fcf_indx); 2230 spin_lock_irq(&phba->hbalock); 2231 phba->fcf.fcf_flag |= FCF_REDISC_FOV; 2232 spin_unlock_irq(&phba->hbalock); 2233 lpfc_sli4_mbox_cmd_free(phba, mboxq); 2234 lpfc_sli4_fcf_scan_read_fcf_rec(phba, 2235 LPFC_FCOE_FCF_GET_FIRST); 2236 return; 2237 } 2238 } 2239 goto read_next_fcf; 2240 } else { 2241 fcf_index = bf_get(lpfc_fcf_record_fcf_index, new_fcf_record); 2242 rc = lpfc_sli4_fcf_pri_list_add(phba, fcf_index, 2243 new_fcf_record); 2244 if (rc) 2245 goto read_next_fcf; 2246 } 2247 2248 /* 2249 * If this is not the first FCF discovery of the HBA, use last 2250 * FCF record for the discovery. The condition that a rescan 2251 * matches the in-use FCF record: fabric name, switch name, mac 2252 * address, and vlan_id. 2253 */ 2254 spin_lock_irq(&phba->hbalock); 2255 if (phba->fcf.fcf_flag & FCF_IN_USE) { 2256 if (phba->cfg_fcf_failover_policy == LPFC_FCF_FOV && 2257 lpfc_sli4_fcf_record_match(phba, &phba->fcf.current_rec, 2258 new_fcf_record, vlan_id)) { 2259 if (bf_get(lpfc_fcf_record_fcf_index, new_fcf_record) == 2260 phba->fcf.current_rec.fcf_indx) { 2261 phba->fcf.fcf_flag |= FCF_AVAILABLE; 2262 if (phba->fcf.fcf_flag & FCF_REDISC_PEND) 2263 /* Stop FCF redisc wait timer */ 2264 __lpfc_sli4_stop_fcf_redisc_wait_timer( 2265 phba); 2266 else if (phba->fcf.fcf_flag & FCF_REDISC_FOV) 2267 /* Fast failover, mark completed */ 2268 phba->fcf.fcf_flag &= ~FCF_REDISC_FOV; 2269 spin_unlock_irq(&phba->hbalock); 2270 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2271 "2836 New FCF matches in-use " 2272 "FCF (x%x), port_state:x%x, " 2273 "fc_flag:x%x\n", 2274 phba->fcf.current_rec.fcf_indx, 2275 phba->pport->port_state, 2276 phba->pport->fc_flag); 2277 goto out; 2278 } else 2279 lpfc_printf_log(phba, KERN_ERR, LOG_FIP, 2280 "2863 New FCF (x%x) matches " 2281 "property of in-use FCF (x%x)\n", 2282 bf_get(lpfc_fcf_record_fcf_index, 2283 new_fcf_record), 2284 phba->fcf.current_rec.fcf_indx); 2285 } 2286 /* 2287 * Read next FCF record from HBA searching for the matching 2288 * with in-use record only if not during the fast failover 2289 * period. In case of fast failover period, it shall try to 2290 * determine whether the FCF record just read should be the 2291 * next candidate. 2292 */ 2293 if (!(phba->fcf.fcf_flag & FCF_REDISC_FOV)) { 2294 spin_unlock_irq(&phba->hbalock); 2295 goto read_next_fcf; 2296 } 2297 } 2298 /* 2299 * Update on failover FCF record only if it's in FCF fast-failover 2300 * period; otherwise, update on current FCF record. 2301 */ 2302 if (phba->fcf.fcf_flag & FCF_REDISC_FOV) 2303 fcf_rec = &phba->fcf.failover_rec; 2304 else 2305 fcf_rec = &phba->fcf.current_rec; 2306 2307 if (phba->fcf.fcf_flag & FCF_AVAILABLE) { 2308 /* 2309 * If the driver FCF record does not have boot flag 2310 * set and new hba fcf record has boot flag set, use 2311 * the new hba fcf record. 2312 */ 2313 if (boot_flag && !(fcf_rec->flag & BOOT_ENABLE)) { 2314 /* Choose this FCF record */ 2315 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2316 "2837 Update current FCF record " 2317 "(x%x) with new FCF record (x%x)\n", 2318 fcf_rec->fcf_indx, 2319 bf_get(lpfc_fcf_record_fcf_index, 2320 new_fcf_record)); 2321 __lpfc_update_fcf_record(phba, fcf_rec, new_fcf_record, 2322 addr_mode, vlan_id, BOOT_ENABLE); 2323 spin_unlock_irq(&phba->hbalock); 2324 goto read_next_fcf; 2325 } 2326 /* 2327 * If the driver FCF record has boot flag set and the 2328 * new hba FCF record does not have boot flag, read 2329 * the next FCF record. 2330 */ 2331 if (!boot_flag && (fcf_rec->flag & BOOT_ENABLE)) { 2332 spin_unlock_irq(&phba->hbalock); 2333 goto read_next_fcf; 2334 } 2335 /* 2336 * If the new hba FCF record has lower priority value 2337 * than the driver FCF record, use the new record. 2338 */ 2339 if (new_fcf_record->fip_priority < fcf_rec->priority) { 2340 /* Choose the new FCF record with lower priority */ 2341 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2342 "2838 Update current FCF record " 2343 "(x%x) with new FCF record (x%x)\n", 2344 fcf_rec->fcf_indx, 2345 bf_get(lpfc_fcf_record_fcf_index, 2346 new_fcf_record)); 2347 __lpfc_update_fcf_record(phba, fcf_rec, new_fcf_record, 2348 addr_mode, vlan_id, 0); 2349 /* Reset running random FCF selection count */ 2350 phba->fcf.eligible_fcf_cnt = 1; 2351 } else if (new_fcf_record->fip_priority == fcf_rec->priority) { 2352 /* Update running random FCF selection count */ 2353 phba->fcf.eligible_fcf_cnt++; 2354 select_new_fcf = lpfc_sli4_new_fcf_random_select(phba, 2355 phba->fcf.eligible_fcf_cnt); 2356 if (select_new_fcf) { 2357 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2358 "2839 Update current FCF record " 2359 "(x%x) with new FCF record (x%x)\n", 2360 fcf_rec->fcf_indx, 2361 bf_get(lpfc_fcf_record_fcf_index, 2362 new_fcf_record)); 2363 /* Choose the new FCF by random selection */ 2364 __lpfc_update_fcf_record(phba, fcf_rec, 2365 new_fcf_record, 2366 addr_mode, vlan_id, 0); 2367 } 2368 } 2369 spin_unlock_irq(&phba->hbalock); 2370 goto read_next_fcf; 2371 } 2372 /* 2373 * This is the first suitable FCF record, choose this record for 2374 * initial best-fit FCF. 2375 */ 2376 if (fcf_rec) { 2377 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2378 "2840 Update initial FCF candidate " 2379 "with FCF (x%x)\n", 2380 bf_get(lpfc_fcf_record_fcf_index, 2381 new_fcf_record)); 2382 __lpfc_update_fcf_record(phba, fcf_rec, new_fcf_record, 2383 addr_mode, vlan_id, (boot_flag ? 2384 BOOT_ENABLE : 0)); 2385 phba->fcf.fcf_flag |= FCF_AVAILABLE; 2386 /* Setup initial running random FCF selection count */ 2387 phba->fcf.eligible_fcf_cnt = 1; 2388 /* Seeding the random number generator for random selection */ 2389 seed = (uint32_t)(0xFFFFFFFF & jiffies); 2390 prandom_seed(seed); 2391 } 2392 spin_unlock_irq(&phba->hbalock); 2393 goto read_next_fcf; 2394 2395 read_next_fcf: 2396 lpfc_sli4_mbox_cmd_free(phba, mboxq); 2397 if (next_fcf_index == LPFC_FCOE_FCF_NEXT_NONE || next_fcf_index == 0) { 2398 if (phba->fcf.fcf_flag & FCF_REDISC_FOV) { 2399 /* 2400 * Case of FCF fast failover scan 2401 */ 2402 2403 /* 2404 * It has not found any suitable FCF record, cancel 2405 * FCF scan inprogress, and do nothing 2406 */ 2407 if (!(phba->fcf.failover_rec.flag & RECORD_VALID)) { 2408 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP, 2409 "2782 No suitable FCF found: " 2410 "(x%x/x%x)\n", 2411 phba->fcoe_eventtag_at_fcf_scan, 2412 bf_get(lpfc_fcf_record_fcf_index, 2413 new_fcf_record)); 2414 spin_lock_irq(&phba->hbalock); 2415 if (phba->hba_flag & HBA_DEVLOSS_TMO) { 2416 phba->hba_flag &= ~FCF_TS_INPROG; 2417 spin_unlock_irq(&phba->hbalock); 2418 /* Unregister in-use FCF and rescan */ 2419 lpfc_printf_log(phba, KERN_INFO, 2420 LOG_FIP, 2421 "2864 On devloss tmo " 2422 "unreg in-use FCF and " 2423 "rescan FCF table\n"); 2424 lpfc_unregister_fcf_rescan(phba); 2425 return; 2426 } 2427 /* 2428 * Let next new FCF event trigger fast failover 2429 */ 2430 phba->hba_flag &= ~FCF_TS_INPROG; 2431 spin_unlock_irq(&phba->hbalock); 2432 return; 2433 } 2434 /* 2435 * It has found a suitable FCF record that is not 2436 * the same as in-use FCF record, unregister the 2437 * in-use FCF record, replace the in-use FCF record 2438 * with the new FCF record, mark FCF fast failover 2439 * completed, and then start register the new FCF 2440 * record. 2441 */ 2442 2443 /* Unregister the current in-use FCF record */ 2444 lpfc_unregister_fcf(phba); 2445 2446 /* Replace in-use record with the new record */ 2447 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2448 "2842 Replace in-use FCF (x%x) " 2449 "with failover FCF (x%x)\n", 2450 phba->fcf.current_rec.fcf_indx, 2451 phba->fcf.failover_rec.fcf_indx); 2452 memcpy(&phba->fcf.current_rec, 2453 &phba->fcf.failover_rec, 2454 sizeof(struct lpfc_fcf_rec)); 2455 /* 2456 * Mark the fast FCF failover rediscovery completed 2457 * and the start of the first round of the roundrobin 2458 * FCF failover. 2459 */ 2460 spin_lock_irq(&phba->hbalock); 2461 phba->fcf.fcf_flag &= ~FCF_REDISC_FOV; 2462 spin_unlock_irq(&phba->hbalock); 2463 /* Register to the new FCF record */ 2464 lpfc_register_fcf(phba); 2465 } else { 2466 /* 2467 * In case of transaction period to fast FCF failover, 2468 * do nothing when search to the end of the FCF table. 2469 */ 2470 if ((phba->fcf.fcf_flag & FCF_REDISC_EVT) || 2471 (phba->fcf.fcf_flag & FCF_REDISC_PEND)) 2472 return; 2473 2474 if (phba->cfg_fcf_failover_policy == LPFC_FCF_FOV && 2475 phba->fcf.fcf_flag & FCF_IN_USE) { 2476 /* 2477 * In case the current in-use FCF record no 2478 * longer existed during FCF discovery that 2479 * was not triggered by fast FCF failover 2480 * process, treat it as fast FCF failover. 2481 */ 2482 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2483 "2841 In-use FCF record (x%x) " 2484 "not reported, entering fast " 2485 "FCF failover mode scanning.\n", 2486 phba->fcf.current_rec.fcf_indx); 2487 spin_lock_irq(&phba->hbalock); 2488 phba->fcf.fcf_flag |= FCF_REDISC_FOV; 2489 spin_unlock_irq(&phba->hbalock); 2490 lpfc_sli4_fcf_scan_read_fcf_rec(phba, 2491 LPFC_FCOE_FCF_GET_FIRST); 2492 return; 2493 } 2494 /* Register to the new FCF record */ 2495 lpfc_register_fcf(phba); 2496 } 2497 } else 2498 lpfc_sli4_fcf_scan_read_fcf_rec(phba, next_fcf_index); 2499 return; 2500 2501 out: 2502 lpfc_sli4_mbox_cmd_free(phba, mboxq); 2503 lpfc_register_fcf(phba); 2504 2505 return; 2506 } 2507 2508 /** 2509 * lpfc_mbx_cmpl_fcf_rr_read_fcf_rec - fcf roundrobin read_fcf mbox cmpl hdler 2510 * @phba: pointer to lpfc hba data structure. 2511 * @mboxq: pointer to mailbox object. 2512 * 2513 * This is the callback function for FLOGI failure roundrobin FCF failover 2514 * read FCF record mailbox command from the eligible FCF record bmask for 2515 * performing the failover. If the FCF read back is not valid/available, it 2516 * fails through to retrying FLOGI to the currently registered FCF again. 2517 * Otherwise, if the FCF read back is valid and available, it will set the 2518 * newly read FCF record to the failover FCF record, unregister currently 2519 * registered FCF record, copy the failover FCF record to the current 2520 * FCF record, and then register the current FCF record before proceeding 2521 * to trying FLOGI on the new failover FCF. 2522 */ 2523 void 2524 lpfc_mbx_cmpl_fcf_rr_read_fcf_rec(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq) 2525 { 2526 struct fcf_record *new_fcf_record; 2527 uint32_t boot_flag, addr_mode; 2528 uint16_t next_fcf_index, fcf_index; 2529 uint16_t current_fcf_index; 2530 uint16_t vlan_id; 2531 int rc; 2532 2533 /* If link state is not up, stop the roundrobin failover process */ 2534 if (phba->link_state < LPFC_LINK_UP) { 2535 spin_lock_irq(&phba->hbalock); 2536 phba->fcf.fcf_flag &= ~FCF_DISCOVERY; 2537 phba->hba_flag &= ~FCF_RR_INPROG; 2538 spin_unlock_irq(&phba->hbalock); 2539 goto out; 2540 } 2541 2542 /* Parse the FCF record from the non-embedded mailbox command */ 2543 new_fcf_record = lpfc_sli4_fcf_rec_mbox_parse(phba, mboxq, 2544 &next_fcf_index); 2545 if (!new_fcf_record) { 2546 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP, 2547 "2766 Mailbox command READ_FCF_RECORD " 2548 "failed to retrieve a FCF record.\n"); 2549 goto error_out; 2550 } 2551 2552 /* Get the needed parameters from FCF record */ 2553 rc = lpfc_match_fcf_conn_list(phba, new_fcf_record, &boot_flag, 2554 &addr_mode, &vlan_id); 2555 2556 /* Log the FCF record information if turned on */ 2557 lpfc_sli4_log_fcf_record_info(phba, new_fcf_record, vlan_id, 2558 next_fcf_index); 2559 2560 fcf_index = bf_get(lpfc_fcf_record_fcf_index, new_fcf_record); 2561 if (!rc) { 2562 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2563 "2848 Remove ineligible FCF (x%x) from " 2564 "from roundrobin bmask\n", fcf_index); 2565 /* Clear roundrobin bmask bit for ineligible FCF */ 2566 lpfc_sli4_fcf_rr_index_clear(phba, fcf_index); 2567 /* Perform next round of roundrobin FCF failover */ 2568 fcf_index = lpfc_sli4_fcf_rr_next_index_get(phba); 2569 rc = lpfc_sli4_fcf_rr_next_proc(phba->pport, fcf_index); 2570 if (rc) 2571 goto out; 2572 goto error_out; 2573 } 2574 2575 if (fcf_index == phba->fcf.current_rec.fcf_indx) { 2576 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2577 "2760 Perform FLOGI roundrobin FCF failover: " 2578 "FCF (x%x) back to FCF (x%x)\n", 2579 phba->fcf.current_rec.fcf_indx, fcf_index); 2580 /* Wait 500 ms before retrying FLOGI to current FCF */ 2581 msleep(500); 2582 lpfc_issue_init_vfi(phba->pport); 2583 goto out; 2584 } 2585 2586 /* Upload new FCF record to the failover FCF record */ 2587 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2588 "2834 Update current FCF (x%x) with new FCF (x%x)\n", 2589 phba->fcf.failover_rec.fcf_indx, fcf_index); 2590 spin_lock_irq(&phba->hbalock); 2591 __lpfc_update_fcf_record(phba, &phba->fcf.failover_rec, 2592 new_fcf_record, addr_mode, vlan_id, 2593 (boot_flag ? BOOT_ENABLE : 0)); 2594 spin_unlock_irq(&phba->hbalock); 2595 2596 current_fcf_index = phba->fcf.current_rec.fcf_indx; 2597 2598 /* Unregister the current in-use FCF record */ 2599 lpfc_unregister_fcf(phba); 2600 2601 /* Replace in-use record with the new record */ 2602 memcpy(&phba->fcf.current_rec, &phba->fcf.failover_rec, 2603 sizeof(struct lpfc_fcf_rec)); 2604 2605 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2606 "2783 Perform FLOGI roundrobin FCF failover: FCF " 2607 "(x%x) to FCF (x%x)\n", current_fcf_index, fcf_index); 2608 2609 error_out: 2610 lpfc_register_fcf(phba); 2611 out: 2612 lpfc_sli4_mbox_cmd_free(phba, mboxq); 2613 } 2614 2615 /** 2616 * lpfc_mbx_cmpl_read_fcf_rec - read fcf completion handler. 2617 * @phba: pointer to lpfc hba data structure. 2618 * @mboxq: pointer to mailbox object. 2619 * 2620 * This is the callback function of read FCF record mailbox command for 2621 * updating the eligible FCF bmask for FLOGI failure roundrobin FCF 2622 * failover when a new FCF event happened. If the FCF read back is 2623 * valid/available and it passes the connection list check, it updates 2624 * the bmask for the eligible FCF record for roundrobin failover. 2625 */ 2626 void 2627 lpfc_mbx_cmpl_read_fcf_rec(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq) 2628 { 2629 struct fcf_record *new_fcf_record; 2630 uint32_t boot_flag, addr_mode; 2631 uint16_t fcf_index, next_fcf_index; 2632 uint16_t vlan_id; 2633 int rc; 2634 2635 /* If link state is not up, no need to proceed */ 2636 if (phba->link_state < LPFC_LINK_UP) 2637 goto out; 2638 2639 /* If FCF discovery period is over, no need to proceed */ 2640 if (!(phba->fcf.fcf_flag & FCF_DISCOVERY)) 2641 goto out; 2642 2643 /* Parse the FCF record from the non-embedded mailbox command */ 2644 new_fcf_record = lpfc_sli4_fcf_rec_mbox_parse(phba, mboxq, 2645 &next_fcf_index); 2646 if (!new_fcf_record) { 2647 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2648 "2767 Mailbox command READ_FCF_RECORD " 2649 "failed to retrieve a FCF record.\n"); 2650 goto out; 2651 } 2652 2653 /* Check the connection list for eligibility */ 2654 rc = lpfc_match_fcf_conn_list(phba, new_fcf_record, &boot_flag, 2655 &addr_mode, &vlan_id); 2656 2657 /* Log the FCF record information if turned on */ 2658 lpfc_sli4_log_fcf_record_info(phba, new_fcf_record, vlan_id, 2659 next_fcf_index); 2660 2661 if (!rc) 2662 goto out; 2663 2664 /* Update the eligible FCF record index bmask */ 2665 fcf_index = bf_get(lpfc_fcf_record_fcf_index, new_fcf_record); 2666 2667 rc = lpfc_sli4_fcf_pri_list_add(phba, fcf_index, new_fcf_record); 2668 2669 out: 2670 lpfc_sli4_mbox_cmd_free(phba, mboxq); 2671 } 2672 2673 /** 2674 * lpfc_init_vfi_cmpl - Completion handler for init_vfi mbox command. 2675 * @phba: pointer to lpfc hba data structure. 2676 * @mboxq: pointer to mailbox data structure. 2677 * 2678 * This function handles completion of init vfi mailbox command. 2679 */ 2680 void 2681 lpfc_init_vfi_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq) 2682 { 2683 struct lpfc_vport *vport = mboxq->vport; 2684 2685 /* 2686 * VFI not supported on interface type 0, just do the flogi 2687 * Also continue if the VFI is in use - just use the same one. 2688 */ 2689 if (mboxq->u.mb.mbxStatus && 2690 (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) != 2691 LPFC_SLI_INTF_IF_TYPE_0) && 2692 mboxq->u.mb.mbxStatus != MBX_VFI_IN_USE) { 2693 lpfc_printf_vlog(vport, KERN_ERR, 2694 LOG_MBOX, 2695 "2891 Init VFI mailbox failed 0x%x\n", 2696 mboxq->u.mb.mbxStatus); 2697 mempool_free(mboxq, phba->mbox_mem_pool); 2698 lpfc_vport_set_state(vport, FC_VPORT_FAILED); 2699 return; 2700 } 2701 2702 lpfc_initial_flogi(vport); 2703 mempool_free(mboxq, phba->mbox_mem_pool); 2704 return; 2705 } 2706 2707 /** 2708 * lpfc_issue_init_vfi - Issue init_vfi mailbox command. 2709 * @vport: pointer to lpfc_vport data structure. 2710 * 2711 * This function issue a init_vfi mailbox command to initialize the VFI and 2712 * VPI for the physical port. 2713 */ 2714 void 2715 lpfc_issue_init_vfi(struct lpfc_vport *vport) 2716 { 2717 LPFC_MBOXQ_t *mboxq; 2718 int rc; 2719 struct lpfc_hba *phba = vport->phba; 2720 2721 mboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 2722 if (!mboxq) { 2723 lpfc_printf_vlog(vport, KERN_ERR, 2724 LOG_MBOX, "2892 Failed to allocate " 2725 "init_vfi mailbox\n"); 2726 return; 2727 } 2728 lpfc_init_vfi(mboxq, vport); 2729 mboxq->mbox_cmpl = lpfc_init_vfi_cmpl; 2730 rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_NOWAIT); 2731 if (rc == MBX_NOT_FINISHED) { 2732 lpfc_printf_vlog(vport, KERN_ERR, 2733 LOG_MBOX, "2893 Failed to issue init_vfi mailbox\n"); 2734 mempool_free(mboxq, vport->phba->mbox_mem_pool); 2735 } 2736 } 2737 2738 /** 2739 * lpfc_init_vpi_cmpl - Completion handler for init_vpi mbox command. 2740 * @phba: pointer to lpfc hba data structure. 2741 * @mboxq: pointer to mailbox data structure. 2742 * 2743 * This function handles completion of init vpi mailbox command. 2744 */ 2745 void 2746 lpfc_init_vpi_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq) 2747 { 2748 struct lpfc_vport *vport = mboxq->vport; 2749 struct lpfc_nodelist *ndlp; 2750 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 2751 2752 if (mboxq->u.mb.mbxStatus) { 2753 lpfc_printf_vlog(vport, KERN_ERR, 2754 LOG_MBOX, 2755 "2609 Init VPI mailbox failed 0x%x\n", 2756 mboxq->u.mb.mbxStatus); 2757 mempool_free(mboxq, phba->mbox_mem_pool); 2758 lpfc_vport_set_state(vport, FC_VPORT_FAILED); 2759 return; 2760 } 2761 spin_lock_irq(shost->host_lock); 2762 vport->fc_flag &= ~FC_VPORT_NEEDS_INIT_VPI; 2763 spin_unlock_irq(shost->host_lock); 2764 2765 /* If this port is physical port or FDISC is done, do reg_vpi */ 2766 if ((phba->pport == vport) || (vport->port_state == LPFC_FDISC)) { 2767 ndlp = lpfc_findnode_did(vport, Fabric_DID); 2768 if (!ndlp) 2769 lpfc_printf_vlog(vport, KERN_ERR, 2770 LOG_DISCOVERY, 2771 "2731 Cannot find fabric " 2772 "controller node\n"); 2773 else 2774 lpfc_register_new_vport(phba, vport, ndlp); 2775 mempool_free(mboxq, phba->mbox_mem_pool); 2776 return; 2777 } 2778 2779 if (phba->link_flag & LS_NPIV_FAB_SUPPORTED) 2780 lpfc_initial_fdisc(vport); 2781 else { 2782 lpfc_vport_set_state(vport, FC_VPORT_NO_FABRIC_SUPP); 2783 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS, 2784 "2606 No NPIV Fabric support\n"); 2785 } 2786 mempool_free(mboxq, phba->mbox_mem_pool); 2787 return; 2788 } 2789 2790 /** 2791 * lpfc_issue_init_vpi - Issue init_vpi mailbox command. 2792 * @vport: pointer to lpfc_vport data structure. 2793 * 2794 * This function issue a init_vpi mailbox command to initialize 2795 * VPI for the vport. 2796 */ 2797 void 2798 lpfc_issue_init_vpi(struct lpfc_vport *vport) 2799 { 2800 LPFC_MBOXQ_t *mboxq; 2801 int rc, vpi; 2802 2803 if ((vport->port_type != LPFC_PHYSICAL_PORT) && (!vport->vpi)) { 2804 vpi = lpfc_alloc_vpi(vport->phba); 2805 if (!vpi) { 2806 lpfc_printf_vlog(vport, KERN_ERR, 2807 LOG_MBOX, 2808 "3303 Failed to obtain vport vpi\n"); 2809 lpfc_vport_set_state(vport, FC_VPORT_FAILED); 2810 return; 2811 } 2812 vport->vpi = vpi; 2813 } 2814 2815 mboxq = mempool_alloc(vport->phba->mbox_mem_pool, GFP_KERNEL); 2816 if (!mboxq) { 2817 lpfc_printf_vlog(vport, KERN_ERR, 2818 LOG_MBOX, "2607 Failed to allocate " 2819 "init_vpi mailbox\n"); 2820 return; 2821 } 2822 lpfc_init_vpi(vport->phba, mboxq, vport->vpi); 2823 mboxq->vport = vport; 2824 mboxq->mbox_cmpl = lpfc_init_vpi_cmpl; 2825 rc = lpfc_sli_issue_mbox(vport->phba, mboxq, MBX_NOWAIT); 2826 if (rc == MBX_NOT_FINISHED) { 2827 lpfc_printf_vlog(vport, KERN_ERR, 2828 LOG_MBOX, "2608 Failed to issue init_vpi mailbox\n"); 2829 mempool_free(mboxq, vport->phba->mbox_mem_pool); 2830 } 2831 } 2832 2833 /** 2834 * lpfc_start_fdiscs - send fdiscs for each vports on this port. 2835 * @phba: pointer to lpfc hba data structure. 2836 * 2837 * This function loops through the list of vports on the @phba and issues an 2838 * FDISC if possible. 2839 */ 2840 void 2841 lpfc_start_fdiscs(struct lpfc_hba *phba) 2842 { 2843 struct lpfc_vport **vports; 2844 int i; 2845 2846 vports = lpfc_create_vport_work_array(phba); 2847 if (vports != NULL) { 2848 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) { 2849 if (vports[i]->port_type == LPFC_PHYSICAL_PORT) 2850 continue; 2851 /* There are no vpi for this vport */ 2852 if (vports[i]->vpi > phba->max_vpi) { 2853 lpfc_vport_set_state(vports[i], 2854 FC_VPORT_FAILED); 2855 continue; 2856 } 2857 if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) { 2858 lpfc_vport_set_state(vports[i], 2859 FC_VPORT_LINKDOWN); 2860 continue; 2861 } 2862 if (vports[i]->fc_flag & FC_VPORT_NEEDS_INIT_VPI) { 2863 lpfc_issue_init_vpi(vports[i]); 2864 continue; 2865 } 2866 if (phba->link_flag & LS_NPIV_FAB_SUPPORTED) 2867 lpfc_initial_fdisc(vports[i]); 2868 else { 2869 lpfc_vport_set_state(vports[i], 2870 FC_VPORT_NO_FABRIC_SUPP); 2871 lpfc_printf_vlog(vports[i], KERN_ERR, 2872 LOG_ELS, 2873 "0259 No NPIV " 2874 "Fabric support\n"); 2875 } 2876 } 2877 } 2878 lpfc_destroy_vport_work_array(phba, vports); 2879 } 2880 2881 void 2882 lpfc_mbx_cmpl_reg_vfi(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq) 2883 { 2884 struct lpfc_dmabuf *dmabuf = mboxq->context1; 2885 struct lpfc_vport *vport = mboxq->vport; 2886 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 2887 2888 /* 2889 * VFI not supported for interface type 0, so ignore any mailbox 2890 * error (except VFI in use) and continue with the discovery. 2891 */ 2892 if (mboxq->u.mb.mbxStatus && 2893 (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) != 2894 LPFC_SLI_INTF_IF_TYPE_0) && 2895 mboxq->u.mb.mbxStatus != MBX_VFI_IN_USE) { 2896 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX, 2897 "2018 REG_VFI mbxStatus error x%x " 2898 "HBA state x%x\n", 2899 mboxq->u.mb.mbxStatus, vport->port_state); 2900 if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) { 2901 /* FLOGI failed, use loop map to make discovery list */ 2902 lpfc_disc_list_loopmap(vport); 2903 /* Start discovery */ 2904 lpfc_disc_start(vport); 2905 goto out_free_mem; 2906 } 2907 lpfc_vport_set_state(vport, FC_VPORT_FAILED); 2908 goto out_free_mem; 2909 } 2910 2911 /* If the VFI is already registered, there is nothing else to do 2912 * Unless this was a VFI update and we are in PT2PT mode, then 2913 * we should drop through to set the port state to ready. 2914 */ 2915 if (vport->fc_flag & FC_VFI_REGISTERED) 2916 if (!(phba->sli_rev == LPFC_SLI_REV4 && 2917 vport->fc_flag & FC_PT2PT)) 2918 goto out_free_mem; 2919 2920 /* The VPI is implicitly registered when the VFI is registered */ 2921 spin_lock_irq(shost->host_lock); 2922 vport->vpi_state |= LPFC_VPI_REGISTERED; 2923 vport->fc_flag |= FC_VFI_REGISTERED; 2924 vport->fc_flag &= ~FC_VPORT_NEEDS_REG_VPI; 2925 vport->fc_flag &= ~FC_VPORT_NEEDS_INIT_VPI; 2926 spin_unlock_irq(shost->host_lock); 2927 2928 /* In case SLI4 FC loopback test, we are ready */ 2929 if ((phba->sli_rev == LPFC_SLI_REV4) && 2930 (phba->link_flag & LS_LOOPBACK_MODE)) { 2931 phba->link_state = LPFC_HBA_READY; 2932 goto out_free_mem; 2933 } 2934 2935 lpfc_printf_vlog(vport, KERN_INFO, LOG_SLI, 2936 "3313 cmpl reg vfi port_state:%x fc_flag:%x myDid:%x " 2937 "alpacnt:%d LinkState:%x topology:%x\n", 2938 vport->port_state, vport->fc_flag, vport->fc_myDID, 2939 vport->phba->alpa_map[0], 2940 phba->link_state, phba->fc_topology); 2941 2942 if (vport->port_state == LPFC_FABRIC_CFG_LINK) { 2943 /* 2944 * For private loop or for NPort pt2pt, 2945 * just start discovery and we are done. 2946 */ 2947 if ((vport->fc_flag & FC_PT2PT) || 2948 ((phba->fc_topology == LPFC_TOPOLOGY_LOOP) && 2949 !(vport->fc_flag & FC_PUBLIC_LOOP))) { 2950 2951 /* Use loop map to make discovery list */ 2952 lpfc_disc_list_loopmap(vport); 2953 /* Start discovery */ 2954 if (vport->fc_flag & FC_PT2PT) 2955 vport->port_state = LPFC_VPORT_READY; 2956 else 2957 lpfc_disc_start(vport); 2958 } else { 2959 lpfc_start_fdiscs(phba); 2960 lpfc_do_scr_ns_plogi(phba, vport); 2961 } 2962 } 2963 2964 out_free_mem: 2965 mempool_free(mboxq, phba->mbox_mem_pool); 2966 lpfc_mbuf_free(phba, dmabuf->virt, dmabuf->phys); 2967 kfree(dmabuf); 2968 return; 2969 } 2970 2971 static void 2972 lpfc_mbx_cmpl_read_sparam(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 2973 { 2974 MAILBOX_t *mb = &pmb->u.mb; 2975 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) pmb->context1; 2976 struct lpfc_vport *vport = pmb->vport; 2977 2978 2979 /* Check for error */ 2980 if (mb->mbxStatus) { 2981 /* READ_SPARAM mbox error <mbxStatus> state <hba_state> */ 2982 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX, 2983 "0319 READ_SPARAM mbxStatus error x%x " 2984 "hba state x%x>\n", 2985 mb->mbxStatus, vport->port_state); 2986 lpfc_linkdown(phba); 2987 goto out; 2988 } 2989 2990 memcpy((uint8_t *) &vport->fc_sparam, (uint8_t *) mp->virt, 2991 sizeof (struct serv_parm)); 2992 lpfc_update_vport_wwn(vport); 2993 if (vport->port_type == LPFC_PHYSICAL_PORT) { 2994 memcpy(&phba->wwnn, &vport->fc_nodename, sizeof(phba->wwnn)); 2995 memcpy(&phba->wwpn, &vport->fc_portname, sizeof(phba->wwnn)); 2996 } 2997 2998 lpfc_mbuf_free(phba, mp->virt, mp->phys); 2999 kfree(mp); 3000 mempool_free(pmb, phba->mbox_mem_pool); 3001 return; 3002 3003 out: 3004 pmb->context1 = NULL; 3005 lpfc_mbuf_free(phba, mp->virt, mp->phys); 3006 kfree(mp); 3007 lpfc_issue_clear_la(phba, vport); 3008 mempool_free(pmb, phba->mbox_mem_pool); 3009 return; 3010 } 3011 3012 static void 3013 lpfc_mbx_process_link_up(struct lpfc_hba *phba, struct lpfc_mbx_read_top *la) 3014 { 3015 struct lpfc_vport *vport = phba->pport; 3016 LPFC_MBOXQ_t *sparam_mbox, *cfglink_mbox = NULL; 3017 struct Scsi_Host *shost; 3018 int i; 3019 struct lpfc_dmabuf *mp; 3020 int rc; 3021 struct fcf_record *fcf_record; 3022 uint32_t fc_flags = 0; 3023 3024 spin_lock_irq(&phba->hbalock); 3025 switch (bf_get(lpfc_mbx_read_top_link_spd, la)) { 3026 case LPFC_LINK_SPEED_1GHZ: 3027 case LPFC_LINK_SPEED_2GHZ: 3028 case LPFC_LINK_SPEED_4GHZ: 3029 case LPFC_LINK_SPEED_8GHZ: 3030 case LPFC_LINK_SPEED_10GHZ: 3031 case LPFC_LINK_SPEED_16GHZ: 3032 phba->fc_linkspeed = bf_get(lpfc_mbx_read_top_link_spd, la); 3033 break; 3034 default: 3035 phba->fc_linkspeed = LPFC_LINK_SPEED_UNKNOWN; 3036 break; 3037 } 3038 3039 if (phba->fc_topology && 3040 phba->fc_topology != bf_get(lpfc_mbx_read_top_topology, la)) { 3041 lpfc_printf_log(phba, KERN_WARNING, LOG_SLI, 3042 "3314 Toplogy changed was 0x%x is 0x%x\n", 3043 phba->fc_topology, 3044 bf_get(lpfc_mbx_read_top_topology, la)); 3045 phba->fc_topology_changed = 1; 3046 } 3047 3048 phba->fc_topology = bf_get(lpfc_mbx_read_top_topology, la); 3049 phba->link_flag &= ~LS_NPIV_FAB_SUPPORTED; 3050 3051 shost = lpfc_shost_from_vport(vport); 3052 if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) { 3053 phba->sli3_options &= ~LPFC_SLI3_NPIV_ENABLED; 3054 3055 /* if npiv is enabled and this adapter supports npiv log 3056 * a message that npiv is not supported in this topology 3057 */ 3058 if (phba->cfg_enable_npiv && phba->max_vpi) 3059 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT, 3060 "1309 Link Up Event npiv not supported in loop " 3061 "topology\n"); 3062 /* Get Loop Map information */ 3063 if (bf_get(lpfc_mbx_read_top_il, la)) 3064 fc_flags |= FC_LBIT; 3065 3066 vport->fc_myDID = bf_get(lpfc_mbx_read_top_alpa_granted, la); 3067 i = la->lilpBde64.tus.f.bdeSize; 3068 3069 if (i == 0) { 3070 phba->alpa_map[0] = 0; 3071 } else { 3072 if (vport->cfg_log_verbose & LOG_LINK_EVENT) { 3073 int numalpa, j, k; 3074 union { 3075 uint8_t pamap[16]; 3076 struct { 3077 uint32_t wd1; 3078 uint32_t wd2; 3079 uint32_t wd3; 3080 uint32_t wd4; 3081 } pa; 3082 } un; 3083 numalpa = phba->alpa_map[0]; 3084 j = 0; 3085 while (j < numalpa) { 3086 memset(un.pamap, 0, 16); 3087 for (k = 1; j < numalpa; k++) { 3088 un.pamap[k - 1] = 3089 phba->alpa_map[j + 1]; 3090 j++; 3091 if (k == 16) 3092 break; 3093 } 3094 /* Link Up Event ALPA map */ 3095 lpfc_printf_log(phba, 3096 KERN_WARNING, 3097 LOG_LINK_EVENT, 3098 "1304 Link Up Event " 3099 "ALPA map Data: x%x " 3100 "x%x x%x x%x\n", 3101 un.pa.wd1, un.pa.wd2, 3102 un.pa.wd3, un.pa.wd4); 3103 } 3104 } 3105 } 3106 } else { 3107 if (!(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)) { 3108 if (phba->max_vpi && phba->cfg_enable_npiv && 3109 (phba->sli_rev >= LPFC_SLI_REV3)) 3110 phba->sli3_options |= LPFC_SLI3_NPIV_ENABLED; 3111 } 3112 vport->fc_myDID = phba->fc_pref_DID; 3113 fc_flags |= FC_LBIT; 3114 } 3115 spin_unlock_irq(&phba->hbalock); 3116 3117 if (fc_flags) { 3118 spin_lock_irq(shost->host_lock); 3119 vport->fc_flag |= fc_flags; 3120 spin_unlock_irq(shost->host_lock); 3121 } 3122 3123 lpfc_linkup(phba); 3124 sparam_mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 3125 if (!sparam_mbox) 3126 goto out; 3127 3128 rc = lpfc_read_sparam(phba, sparam_mbox, 0); 3129 if (rc) { 3130 mempool_free(sparam_mbox, phba->mbox_mem_pool); 3131 goto out; 3132 } 3133 sparam_mbox->vport = vport; 3134 sparam_mbox->mbox_cmpl = lpfc_mbx_cmpl_read_sparam; 3135 rc = lpfc_sli_issue_mbox(phba, sparam_mbox, MBX_NOWAIT); 3136 if (rc == MBX_NOT_FINISHED) { 3137 mp = (struct lpfc_dmabuf *) sparam_mbox->context1; 3138 lpfc_mbuf_free(phba, mp->virt, mp->phys); 3139 kfree(mp); 3140 mempool_free(sparam_mbox, phba->mbox_mem_pool); 3141 goto out; 3142 } 3143 3144 if (!(phba->hba_flag & HBA_FCOE_MODE)) { 3145 cfglink_mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 3146 if (!cfglink_mbox) 3147 goto out; 3148 vport->port_state = LPFC_LOCAL_CFG_LINK; 3149 lpfc_config_link(phba, cfglink_mbox); 3150 cfglink_mbox->vport = vport; 3151 cfglink_mbox->mbox_cmpl = lpfc_mbx_cmpl_local_config_link; 3152 rc = lpfc_sli_issue_mbox(phba, cfglink_mbox, MBX_NOWAIT); 3153 if (rc == MBX_NOT_FINISHED) { 3154 mempool_free(cfglink_mbox, phba->mbox_mem_pool); 3155 goto out; 3156 } 3157 } else { 3158 vport->port_state = LPFC_VPORT_UNKNOWN; 3159 /* 3160 * Add the driver's default FCF record at FCF index 0 now. This 3161 * is phase 1 implementation that support FCF index 0 and driver 3162 * defaults. 3163 */ 3164 if (!(phba->hba_flag & HBA_FIP_SUPPORT)) { 3165 fcf_record = kzalloc(sizeof(struct fcf_record), 3166 GFP_KERNEL); 3167 if (unlikely(!fcf_record)) { 3168 lpfc_printf_log(phba, KERN_ERR, 3169 LOG_MBOX | LOG_SLI, 3170 "2554 Could not allocate memory for " 3171 "fcf record\n"); 3172 rc = -ENODEV; 3173 goto out; 3174 } 3175 3176 lpfc_sli4_build_dflt_fcf_record(phba, fcf_record, 3177 LPFC_FCOE_FCF_DEF_INDEX); 3178 rc = lpfc_sli4_add_fcf_record(phba, fcf_record); 3179 if (unlikely(rc)) { 3180 lpfc_printf_log(phba, KERN_ERR, 3181 LOG_MBOX | LOG_SLI, 3182 "2013 Could not manually add FCF " 3183 "record 0, status %d\n", rc); 3184 rc = -ENODEV; 3185 kfree(fcf_record); 3186 goto out; 3187 } 3188 kfree(fcf_record); 3189 } 3190 /* 3191 * The driver is expected to do FIP/FCF. Call the port 3192 * and get the FCF Table. 3193 */ 3194 spin_lock_irq(&phba->hbalock); 3195 if (phba->hba_flag & FCF_TS_INPROG) { 3196 spin_unlock_irq(&phba->hbalock); 3197 return; 3198 } 3199 /* This is the initial FCF discovery scan */ 3200 phba->fcf.fcf_flag |= FCF_INIT_DISC; 3201 spin_unlock_irq(&phba->hbalock); 3202 lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY, 3203 "2778 Start FCF table scan at linkup\n"); 3204 rc = lpfc_sli4_fcf_scan_read_fcf_rec(phba, 3205 LPFC_FCOE_FCF_GET_FIRST); 3206 if (rc) { 3207 spin_lock_irq(&phba->hbalock); 3208 phba->fcf.fcf_flag &= ~FCF_INIT_DISC; 3209 spin_unlock_irq(&phba->hbalock); 3210 goto out; 3211 } 3212 /* Reset FCF roundrobin bmask for new discovery */ 3213 lpfc_sli4_clear_fcf_rr_bmask(phba); 3214 } 3215 3216 return; 3217 out: 3218 lpfc_vport_set_state(vport, FC_VPORT_FAILED); 3219 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX, 3220 "0263 Discovery Mailbox error: state: 0x%x : %p %p\n", 3221 vport->port_state, sparam_mbox, cfglink_mbox); 3222 lpfc_issue_clear_la(phba, vport); 3223 return; 3224 } 3225 3226 static void 3227 lpfc_enable_la(struct lpfc_hba *phba) 3228 { 3229 uint32_t control; 3230 struct lpfc_sli *psli = &phba->sli; 3231 spin_lock_irq(&phba->hbalock); 3232 psli->sli_flag |= LPFC_PROCESS_LA; 3233 if (phba->sli_rev <= LPFC_SLI_REV3) { 3234 control = readl(phba->HCregaddr); 3235 control |= HC_LAINT_ENA; 3236 writel(control, phba->HCregaddr); 3237 readl(phba->HCregaddr); /* flush */ 3238 } 3239 spin_unlock_irq(&phba->hbalock); 3240 } 3241 3242 static void 3243 lpfc_mbx_issue_link_down(struct lpfc_hba *phba) 3244 { 3245 lpfc_linkdown(phba); 3246 lpfc_enable_la(phba); 3247 lpfc_unregister_unused_fcf(phba); 3248 /* turn on Link Attention interrupts - no CLEAR_LA needed */ 3249 } 3250 3251 3252 /* 3253 * This routine handles processing a READ_TOPOLOGY mailbox 3254 * command upon completion. It is setup in the LPFC_MBOXQ 3255 * as the completion routine when the command is 3256 * handed off to the SLI layer. 3257 */ 3258 void 3259 lpfc_mbx_cmpl_read_topology(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 3260 { 3261 struct lpfc_vport *vport = pmb->vport; 3262 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 3263 struct lpfc_mbx_read_top *la; 3264 MAILBOX_t *mb = &pmb->u.mb; 3265 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1); 3266 3267 /* Unblock ELS traffic */ 3268 phba->sli.ring[LPFC_ELS_RING].flag &= ~LPFC_STOP_IOCB_EVENT; 3269 /* Check for error */ 3270 if (mb->mbxStatus) { 3271 lpfc_printf_log(phba, KERN_INFO, LOG_LINK_EVENT, 3272 "1307 READ_LA mbox error x%x state x%x\n", 3273 mb->mbxStatus, vport->port_state); 3274 lpfc_mbx_issue_link_down(phba); 3275 phba->link_state = LPFC_HBA_ERROR; 3276 goto lpfc_mbx_cmpl_read_topology_free_mbuf; 3277 } 3278 3279 la = (struct lpfc_mbx_read_top *) &pmb->u.mb.un.varReadTop; 3280 3281 memcpy(&phba->alpa_map[0], mp->virt, 128); 3282 3283 spin_lock_irq(shost->host_lock); 3284 if (bf_get(lpfc_mbx_read_top_pb, la)) 3285 vport->fc_flag |= FC_BYPASSED_MODE; 3286 else 3287 vport->fc_flag &= ~FC_BYPASSED_MODE; 3288 spin_unlock_irq(shost->host_lock); 3289 3290 if (phba->fc_eventTag <= la->eventTag) { 3291 phba->fc_stat.LinkMultiEvent++; 3292 if (bf_get(lpfc_mbx_read_top_att_type, la) == LPFC_ATT_LINK_UP) 3293 if (phba->fc_eventTag != 0) 3294 lpfc_linkdown(phba); 3295 } 3296 3297 phba->fc_eventTag = la->eventTag; 3298 if (phba->sli_rev < LPFC_SLI_REV4) { 3299 spin_lock_irq(&phba->hbalock); 3300 if (bf_get(lpfc_mbx_read_top_mm, la)) 3301 phba->sli.sli_flag |= LPFC_MENLO_MAINT; 3302 else 3303 phba->sli.sli_flag &= ~LPFC_MENLO_MAINT; 3304 spin_unlock_irq(&phba->hbalock); 3305 } 3306 3307 phba->link_events++; 3308 if ((bf_get(lpfc_mbx_read_top_att_type, la) == LPFC_ATT_LINK_UP) && 3309 !(phba->sli.sli_flag & LPFC_MENLO_MAINT)) { 3310 phba->fc_stat.LinkUp++; 3311 if (phba->link_flag & LS_LOOPBACK_MODE) { 3312 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT, 3313 "1306 Link Up Event in loop back mode " 3314 "x%x received Data: x%x x%x x%x x%x\n", 3315 la->eventTag, phba->fc_eventTag, 3316 bf_get(lpfc_mbx_read_top_alpa_granted, 3317 la), 3318 bf_get(lpfc_mbx_read_top_link_spd, la), 3319 phba->alpa_map[0]); 3320 } else { 3321 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT, 3322 "1303 Link Up Event x%x received " 3323 "Data: x%x x%x x%x x%x x%x x%x %d\n", 3324 la->eventTag, phba->fc_eventTag, 3325 bf_get(lpfc_mbx_read_top_alpa_granted, 3326 la), 3327 bf_get(lpfc_mbx_read_top_link_spd, la), 3328 phba->alpa_map[0], 3329 bf_get(lpfc_mbx_read_top_mm, la), 3330 bf_get(lpfc_mbx_read_top_fa, la), 3331 phba->wait_4_mlo_maint_flg); 3332 } 3333 lpfc_mbx_process_link_up(phba, la); 3334 } else if (bf_get(lpfc_mbx_read_top_att_type, la) == 3335 LPFC_ATT_LINK_DOWN) { 3336 phba->fc_stat.LinkDown++; 3337 if (phba->link_flag & LS_LOOPBACK_MODE) 3338 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT, 3339 "1308 Link Down Event in loop back mode " 3340 "x%x received " 3341 "Data: x%x x%x x%x\n", 3342 la->eventTag, phba->fc_eventTag, 3343 phba->pport->port_state, vport->fc_flag); 3344 else 3345 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT, 3346 "1305 Link Down Event x%x received " 3347 "Data: x%x x%x x%x x%x x%x\n", 3348 la->eventTag, phba->fc_eventTag, 3349 phba->pport->port_state, vport->fc_flag, 3350 bf_get(lpfc_mbx_read_top_mm, la), 3351 bf_get(lpfc_mbx_read_top_fa, la)); 3352 lpfc_mbx_issue_link_down(phba); 3353 } 3354 if ((phba->sli.sli_flag & LPFC_MENLO_MAINT) && 3355 ((bf_get(lpfc_mbx_read_top_att_type, la) == LPFC_ATT_LINK_UP))) { 3356 if (phba->link_state != LPFC_LINK_DOWN) { 3357 phba->fc_stat.LinkDown++; 3358 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT, 3359 "1312 Link Down Event x%x received " 3360 "Data: x%x x%x x%x\n", 3361 la->eventTag, phba->fc_eventTag, 3362 phba->pport->port_state, vport->fc_flag); 3363 lpfc_mbx_issue_link_down(phba); 3364 } else 3365 lpfc_enable_la(phba); 3366 3367 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT, 3368 "1310 Menlo Maint Mode Link up Event x%x rcvd " 3369 "Data: x%x x%x x%x\n", 3370 la->eventTag, phba->fc_eventTag, 3371 phba->pport->port_state, vport->fc_flag); 3372 /* 3373 * The cmnd that triggered this will be waiting for this 3374 * signal. 3375 */ 3376 /* WAKEUP for MENLO_SET_MODE or MENLO_RESET command. */ 3377 if (phba->wait_4_mlo_maint_flg) { 3378 phba->wait_4_mlo_maint_flg = 0; 3379 wake_up_interruptible(&phba->wait_4_mlo_m_q); 3380 } 3381 } 3382 3383 if ((phba->sli_rev < LPFC_SLI_REV4) && 3384 bf_get(lpfc_mbx_read_top_fa, la)) { 3385 if (phba->sli.sli_flag & LPFC_MENLO_MAINT) 3386 lpfc_issue_clear_la(phba, vport); 3387 lpfc_printf_log(phba, KERN_INFO, LOG_LINK_EVENT, 3388 "1311 fa %d\n", 3389 bf_get(lpfc_mbx_read_top_fa, la)); 3390 } 3391 3392 lpfc_mbx_cmpl_read_topology_free_mbuf: 3393 lpfc_mbuf_free(phba, mp->virt, mp->phys); 3394 kfree(mp); 3395 mempool_free(pmb, phba->mbox_mem_pool); 3396 return; 3397 } 3398 3399 /* 3400 * This routine handles processing a REG_LOGIN mailbox 3401 * command upon completion. It is setup in the LPFC_MBOXQ 3402 * as the completion routine when the command is 3403 * handed off to the SLI layer. 3404 */ 3405 void 3406 lpfc_mbx_cmpl_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 3407 { 3408 struct lpfc_vport *vport = pmb->vport; 3409 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1); 3410 struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) pmb->context2; 3411 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 3412 3413 pmb->context1 = NULL; 3414 pmb->context2 = NULL; 3415 3416 if (ndlp->nlp_flag & NLP_REG_LOGIN_SEND) 3417 ndlp->nlp_flag &= ~NLP_REG_LOGIN_SEND; 3418 3419 if (ndlp->nlp_flag & NLP_IGNR_REG_CMPL || 3420 ndlp->nlp_state != NLP_STE_REG_LOGIN_ISSUE) { 3421 /* We rcvd a rscn after issuing this 3422 * mbox reg login, we may have cycled 3423 * back through the state and be 3424 * back at reg login state so this 3425 * mbox needs to be ignored becase 3426 * there is another reg login in 3427 * process. 3428 */ 3429 spin_lock_irq(shost->host_lock); 3430 ndlp->nlp_flag &= ~NLP_IGNR_REG_CMPL; 3431 spin_unlock_irq(shost->host_lock); 3432 } else 3433 /* Good status, call state machine */ 3434 lpfc_disc_state_machine(vport, ndlp, pmb, 3435 NLP_EVT_CMPL_REG_LOGIN); 3436 3437 lpfc_mbuf_free(phba, mp->virt, mp->phys); 3438 kfree(mp); 3439 mempool_free(pmb, phba->mbox_mem_pool); 3440 /* decrement the node reference count held for this callback 3441 * function. 3442 */ 3443 lpfc_nlp_put(ndlp); 3444 3445 return; 3446 } 3447 3448 static void 3449 lpfc_mbx_cmpl_unreg_vpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 3450 { 3451 MAILBOX_t *mb = &pmb->u.mb; 3452 struct lpfc_vport *vport = pmb->vport; 3453 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 3454 3455 switch (mb->mbxStatus) { 3456 case 0x0011: 3457 case 0x0020: 3458 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE, 3459 "0911 cmpl_unreg_vpi, mb status = 0x%x\n", 3460 mb->mbxStatus); 3461 break; 3462 /* If VPI is busy, reset the HBA */ 3463 case 0x9700: 3464 lpfc_printf_vlog(vport, KERN_ERR, LOG_NODE, 3465 "2798 Unreg_vpi failed vpi 0x%x, mb status = 0x%x\n", 3466 vport->vpi, mb->mbxStatus); 3467 if (!(phba->pport->load_flag & FC_UNLOADING)) 3468 lpfc_workq_post_event(phba, NULL, NULL, 3469 LPFC_EVT_RESET_HBA); 3470 } 3471 spin_lock_irq(shost->host_lock); 3472 vport->vpi_state &= ~LPFC_VPI_REGISTERED; 3473 vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI; 3474 spin_unlock_irq(shost->host_lock); 3475 vport->unreg_vpi_cmpl = VPORT_OK; 3476 mempool_free(pmb, phba->mbox_mem_pool); 3477 lpfc_cleanup_vports_rrqs(vport, NULL); 3478 /* 3479 * This shost reference might have been taken at the beginning of 3480 * lpfc_vport_delete() 3481 */ 3482 if ((vport->load_flag & FC_UNLOADING) && (vport != phba->pport)) 3483 scsi_host_put(shost); 3484 } 3485 3486 int 3487 lpfc_mbx_unreg_vpi(struct lpfc_vport *vport) 3488 { 3489 struct lpfc_hba *phba = vport->phba; 3490 LPFC_MBOXQ_t *mbox; 3491 int rc; 3492 3493 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 3494 if (!mbox) 3495 return 1; 3496 3497 lpfc_unreg_vpi(phba, vport->vpi, mbox); 3498 mbox->vport = vport; 3499 mbox->mbox_cmpl = lpfc_mbx_cmpl_unreg_vpi; 3500 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT); 3501 if (rc == MBX_NOT_FINISHED) { 3502 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX | LOG_VPORT, 3503 "1800 Could not issue unreg_vpi\n"); 3504 mempool_free(mbox, phba->mbox_mem_pool); 3505 vport->unreg_vpi_cmpl = VPORT_ERROR; 3506 return rc; 3507 } 3508 return 0; 3509 } 3510 3511 static void 3512 lpfc_mbx_cmpl_reg_vpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 3513 { 3514 struct lpfc_vport *vport = pmb->vport; 3515 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 3516 MAILBOX_t *mb = &pmb->u.mb; 3517 3518 switch (mb->mbxStatus) { 3519 case 0x0011: 3520 case 0x9601: 3521 case 0x9602: 3522 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE, 3523 "0912 cmpl_reg_vpi, mb status = 0x%x\n", 3524 mb->mbxStatus); 3525 lpfc_vport_set_state(vport, FC_VPORT_FAILED); 3526 spin_lock_irq(shost->host_lock); 3527 vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP); 3528 spin_unlock_irq(shost->host_lock); 3529 vport->fc_myDID = 0; 3530 goto out; 3531 } 3532 3533 spin_lock_irq(shost->host_lock); 3534 vport->vpi_state |= LPFC_VPI_REGISTERED; 3535 vport->fc_flag &= ~FC_VPORT_NEEDS_REG_VPI; 3536 spin_unlock_irq(shost->host_lock); 3537 vport->num_disc_nodes = 0; 3538 /* go thru NPR list and issue ELS PLOGIs */ 3539 if (vport->fc_npr_cnt) 3540 lpfc_els_disc_plogi(vport); 3541 3542 if (!vport->num_disc_nodes) { 3543 spin_lock_irq(shost->host_lock); 3544 vport->fc_flag &= ~FC_NDISC_ACTIVE; 3545 spin_unlock_irq(shost->host_lock); 3546 lpfc_can_disctmo(vport); 3547 } 3548 vport->port_state = LPFC_VPORT_READY; 3549 3550 out: 3551 mempool_free(pmb, phba->mbox_mem_pool); 3552 return; 3553 } 3554 3555 /** 3556 * lpfc_create_static_vport - Read HBA config region to create static vports. 3557 * @phba: pointer to lpfc hba data structure. 3558 * 3559 * This routine issue a DUMP mailbox command for config region 22 to get 3560 * the list of static vports to be created. The function create vports 3561 * based on the information returned from the HBA. 3562 **/ 3563 void 3564 lpfc_create_static_vport(struct lpfc_hba *phba) 3565 { 3566 LPFC_MBOXQ_t *pmb = NULL; 3567 MAILBOX_t *mb; 3568 struct static_vport_info *vport_info; 3569 int mbx_wait_rc = 0, i; 3570 struct fc_vport_identifiers vport_id; 3571 struct fc_vport *new_fc_vport; 3572 struct Scsi_Host *shost; 3573 struct lpfc_vport *vport; 3574 uint16_t offset = 0; 3575 uint8_t *vport_buff; 3576 struct lpfc_dmabuf *mp; 3577 uint32_t byte_count = 0; 3578 3579 pmb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 3580 if (!pmb) { 3581 lpfc_printf_log(phba, KERN_ERR, LOG_INIT, 3582 "0542 lpfc_create_static_vport failed to" 3583 " allocate mailbox memory\n"); 3584 return; 3585 } 3586 memset(pmb, 0, sizeof(LPFC_MBOXQ_t)); 3587 mb = &pmb->u.mb; 3588 3589 vport_info = kzalloc(sizeof(struct static_vport_info), GFP_KERNEL); 3590 if (!vport_info) { 3591 lpfc_printf_log(phba, KERN_ERR, LOG_INIT, 3592 "0543 lpfc_create_static_vport failed to" 3593 " allocate vport_info\n"); 3594 mempool_free(pmb, phba->mbox_mem_pool); 3595 return; 3596 } 3597 3598 vport_buff = (uint8_t *) vport_info; 3599 do { 3600 /* free dma buffer from previous round */ 3601 if (pmb->context1) { 3602 mp = (struct lpfc_dmabuf *)pmb->context1; 3603 lpfc_mbuf_free(phba, mp->virt, mp->phys); 3604 kfree(mp); 3605 } 3606 if (lpfc_dump_static_vport(phba, pmb, offset)) 3607 goto out; 3608 3609 pmb->vport = phba->pport; 3610 mbx_wait_rc = lpfc_sli_issue_mbox_wait(phba, pmb, 3611 LPFC_MBOX_TMO); 3612 3613 if ((mbx_wait_rc != MBX_SUCCESS) || mb->mbxStatus) { 3614 lpfc_printf_log(phba, KERN_WARNING, LOG_INIT, 3615 "0544 lpfc_create_static_vport failed to" 3616 " issue dump mailbox command ret 0x%x " 3617 "status 0x%x\n", 3618 mbx_wait_rc, mb->mbxStatus); 3619 goto out; 3620 } 3621 3622 if (phba->sli_rev == LPFC_SLI_REV4) { 3623 byte_count = pmb->u.mqe.un.mb_words[5]; 3624 mp = (struct lpfc_dmabuf *)pmb->context1; 3625 if (byte_count > sizeof(struct static_vport_info) - 3626 offset) 3627 byte_count = sizeof(struct static_vport_info) 3628 - offset; 3629 memcpy(vport_buff + offset, mp->virt, byte_count); 3630 offset += byte_count; 3631 } else { 3632 if (mb->un.varDmp.word_cnt > 3633 sizeof(struct static_vport_info) - offset) 3634 mb->un.varDmp.word_cnt = 3635 sizeof(struct static_vport_info) 3636 - offset; 3637 byte_count = mb->un.varDmp.word_cnt; 3638 lpfc_sli_pcimem_bcopy(((uint8_t *)mb) + DMP_RSP_OFFSET, 3639 vport_buff + offset, 3640 byte_count); 3641 3642 offset += byte_count; 3643 } 3644 3645 } while (byte_count && 3646 offset < sizeof(struct static_vport_info)); 3647 3648 3649 if ((le32_to_cpu(vport_info->signature) != VPORT_INFO_SIG) || 3650 ((le32_to_cpu(vport_info->rev) & VPORT_INFO_REV_MASK) 3651 != VPORT_INFO_REV)) { 3652 lpfc_printf_log(phba, KERN_ERR, LOG_INIT, 3653 "0545 lpfc_create_static_vport bad" 3654 " information header 0x%x 0x%x\n", 3655 le32_to_cpu(vport_info->signature), 3656 le32_to_cpu(vport_info->rev) & VPORT_INFO_REV_MASK); 3657 3658 goto out; 3659 } 3660 3661 shost = lpfc_shost_from_vport(phba->pport); 3662 3663 for (i = 0; i < MAX_STATIC_VPORT_COUNT; i++) { 3664 memset(&vport_id, 0, sizeof(vport_id)); 3665 vport_id.port_name = wwn_to_u64(vport_info->vport_list[i].wwpn); 3666 vport_id.node_name = wwn_to_u64(vport_info->vport_list[i].wwnn); 3667 if (!vport_id.port_name || !vport_id.node_name) 3668 continue; 3669 3670 vport_id.roles = FC_PORT_ROLE_FCP_INITIATOR; 3671 vport_id.vport_type = FC_PORTTYPE_NPIV; 3672 vport_id.disable = false; 3673 new_fc_vport = fc_vport_create(shost, 0, &vport_id); 3674 3675 if (!new_fc_vport) { 3676 lpfc_printf_log(phba, KERN_WARNING, LOG_INIT, 3677 "0546 lpfc_create_static_vport failed to" 3678 " create vport\n"); 3679 continue; 3680 } 3681 3682 vport = *(struct lpfc_vport **)new_fc_vport->dd_data; 3683 vport->vport_flag |= STATIC_VPORT; 3684 } 3685 3686 out: 3687 kfree(vport_info); 3688 if (mbx_wait_rc != MBX_TIMEOUT) { 3689 if (pmb->context1) { 3690 mp = (struct lpfc_dmabuf *)pmb->context1; 3691 lpfc_mbuf_free(phba, mp->virt, mp->phys); 3692 kfree(mp); 3693 } 3694 mempool_free(pmb, phba->mbox_mem_pool); 3695 } 3696 3697 return; 3698 } 3699 3700 /* 3701 * This routine handles processing a Fabric REG_LOGIN mailbox 3702 * command upon completion. It is setup in the LPFC_MBOXQ 3703 * as the completion routine when the command is 3704 * handed off to the SLI layer. 3705 */ 3706 void 3707 lpfc_mbx_cmpl_fabric_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 3708 { 3709 struct lpfc_vport *vport = pmb->vport; 3710 MAILBOX_t *mb = &pmb->u.mb; 3711 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1); 3712 struct lpfc_nodelist *ndlp; 3713 struct Scsi_Host *shost; 3714 3715 ndlp = (struct lpfc_nodelist *) pmb->context2; 3716 pmb->context1 = NULL; 3717 pmb->context2 = NULL; 3718 3719 if (mb->mbxStatus) { 3720 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX, 3721 "0258 Register Fabric login error: 0x%x\n", 3722 mb->mbxStatus); 3723 lpfc_mbuf_free(phba, mp->virt, mp->phys); 3724 kfree(mp); 3725 mempool_free(pmb, phba->mbox_mem_pool); 3726 3727 if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) { 3728 /* FLOGI failed, use loop map to make discovery list */ 3729 lpfc_disc_list_loopmap(vport); 3730 3731 /* Start discovery */ 3732 lpfc_disc_start(vport); 3733 /* Decrement the reference count to ndlp after the 3734 * reference to the ndlp are done. 3735 */ 3736 lpfc_nlp_put(ndlp); 3737 return; 3738 } 3739 3740 lpfc_vport_set_state(vport, FC_VPORT_FAILED); 3741 /* Decrement the reference count to ndlp after the reference 3742 * to the ndlp are done. 3743 */ 3744 lpfc_nlp_put(ndlp); 3745 return; 3746 } 3747 3748 if (phba->sli_rev < LPFC_SLI_REV4) 3749 ndlp->nlp_rpi = mb->un.varWords[0]; 3750 ndlp->nlp_flag |= NLP_RPI_REGISTERED; 3751 ndlp->nlp_type |= NLP_FABRIC; 3752 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE); 3753 3754 if (vport->port_state == LPFC_FABRIC_CFG_LINK) { 3755 /* when physical port receive logo donot start 3756 * vport discovery */ 3757 if (!(vport->fc_flag & FC_LOGO_RCVD_DID_CHNG)) 3758 lpfc_start_fdiscs(phba); 3759 else { 3760 shost = lpfc_shost_from_vport(vport); 3761 spin_lock_irq(shost->host_lock); 3762 vport->fc_flag &= ~FC_LOGO_RCVD_DID_CHNG ; 3763 spin_unlock_irq(shost->host_lock); 3764 } 3765 lpfc_do_scr_ns_plogi(phba, vport); 3766 } 3767 3768 lpfc_mbuf_free(phba, mp->virt, mp->phys); 3769 kfree(mp); 3770 mempool_free(pmb, phba->mbox_mem_pool); 3771 3772 /* Drop the reference count from the mbox at the end after 3773 * all the current reference to the ndlp have been done. 3774 */ 3775 lpfc_nlp_put(ndlp); 3776 return; 3777 } 3778 3779 /* 3780 * This routine handles processing a NameServer REG_LOGIN mailbox 3781 * command upon completion. It is setup in the LPFC_MBOXQ 3782 * as the completion routine when the command is 3783 * handed off to the SLI layer. 3784 */ 3785 void 3786 lpfc_mbx_cmpl_ns_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 3787 { 3788 MAILBOX_t *mb = &pmb->u.mb; 3789 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1); 3790 struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) pmb->context2; 3791 struct lpfc_vport *vport = pmb->vport; 3792 3793 pmb->context1 = NULL; 3794 pmb->context2 = NULL; 3795 3796 if (mb->mbxStatus) { 3797 out: 3798 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS, 3799 "0260 Register NameServer error: 0x%x\n", 3800 mb->mbxStatus); 3801 /* decrement the node reference count held for this 3802 * callback function. 3803 */ 3804 lpfc_nlp_put(ndlp); 3805 lpfc_mbuf_free(phba, mp->virt, mp->phys); 3806 kfree(mp); 3807 mempool_free(pmb, phba->mbox_mem_pool); 3808 3809 /* If no other thread is using the ndlp, free it */ 3810 lpfc_nlp_not_used(ndlp); 3811 3812 if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) { 3813 /* 3814 * RegLogin failed, use loop map to make discovery 3815 * list 3816 */ 3817 lpfc_disc_list_loopmap(vport); 3818 3819 /* Start discovery */ 3820 lpfc_disc_start(vport); 3821 return; 3822 } 3823 lpfc_vport_set_state(vport, FC_VPORT_FAILED); 3824 return; 3825 } 3826 3827 if (phba->sli_rev < LPFC_SLI_REV4) 3828 ndlp->nlp_rpi = mb->un.varWords[0]; 3829 ndlp->nlp_flag |= NLP_RPI_REGISTERED; 3830 ndlp->nlp_type |= NLP_FABRIC; 3831 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE); 3832 3833 if (vport->port_state < LPFC_VPORT_READY) { 3834 /* Link up discovery requires Fabric registration. */ 3835 lpfc_ns_cmd(vport, SLI_CTNS_RFF_ID, 0, 0); /* Do this first! */ 3836 lpfc_ns_cmd(vport, SLI_CTNS_RNN_ID, 0, 0); 3837 lpfc_ns_cmd(vport, SLI_CTNS_RSNN_NN, 0, 0); 3838 lpfc_ns_cmd(vport, SLI_CTNS_RSPN_ID, 0, 0); 3839 lpfc_ns_cmd(vport, SLI_CTNS_RFT_ID, 0, 0); 3840 3841 /* Issue SCR just before NameServer GID_FT Query */ 3842 lpfc_issue_els_scr(vport, SCR_DID, 0); 3843 } 3844 3845 vport->fc_ns_retry = 0; 3846 /* Good status, issue CT Request to NameServer */ 3847 if (lpfc_ns_cmd(vport, SLI_CTNS_GID_FT, 0, 0)) { 3848 /* Cannot issue NameServer Query, so finish up discovery */ 3849 goto out; 3850 } 3851 3852 /* decrement the node reference count held for this 3853 * callback function. 3854 */ 3855 lpfc_nlp_put(ndlp); 3856 lpfc_mbuf_free(phba, mp->virt, mp->phys); 3857 kfree(mp); 3858 mempool_free(pmb, phba->mbox_mem_pool); 3859 3860 return; 3861 } 3862 3863 static void 3864 lpfc_register_remote_port(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) 3865 { 3866 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 3867 struct fc_rport *rport; 3868 struct lpfc_rport_data *rdata; 3869 struct fc_rport_identifiers rport_ids; 3870 struct lpfc_hba *phba = vport->phba; 3871 3872 /* Remote port has reappeared. Re-register w/ FC transport */ 3873 rport_ids.node_name = wwn_to_u64(ndlp->nlp_nodename.u.wwn); 3874 rport_ids.port_name = wwn_to_u64(ndlp->nlp_portname.u.wwn); 3875 rport_ids.port_id = ndlp->nlp_DID; 3876 rport_ids.roles = FC_RPORT_ROLE_UNKNOWN; 3877 3878 /* 3879 * We leave our node pointer in rport->dd_data when we unregister a 3880 * FCP target port. But fc_remote_port_add zeros the space to which 3881 * rport->dd_data points. So, if we're reusing a previously 3882 * registered port, drop the reference that we took the last time we 3883 * registered the port. 3884 */ 3885 if (ndlp->rport && ndlp->rport->dd_data && 3886 ((struct lpfc_rport_data *) ndlp->rport->dd_data)->pnode == ndlp) 3887 lpfc_nlp_put(ndlp); 3888 3889 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT, 3890 "rport add: did:x%x flg:x%x type x%x", 3891 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type); 3892 3893 /* Don't add the remote port if unloading. */ 3894 if (vport->load_flag & FC_UNLOADING) 3895 return; 3896 3897 ndlp->rport = rport = fc_remote_port_add(shost, 0, &rport_ids); 3898 if (!rport || !get_device(&rport->dev)) { 3899 dev_printk(KERN_WARNING, &phba->pcidev->dev, 3900 "Warning: fc_remote_port_add failed\n"); 3901 return; 3902 } 3903 3904 /* initialize static port data */ 3905 rport->maxframe_size = ndlp->nlp_maxframe; 3906 rport->supported_classes = ndlp->nlp_class_sup; 3907 rdata = rport->dd_data; 3908 rdata->pnode = lpfc_nlp_get(ndlp); 3909 3910 if (ndlp->nlp_type & NLP_FCP_TARGET) 3911 rport_ids.roles |= FC_RPORT_ROLE_FCP_TARGET; 3912 if (ndlp->nlp_type & NLP_FCP_INITIATOR) 3913 rport_ids.roles |= FC_RPORT_ROLE_FCP_INITIATOR; 3914 3915 if (rport_ids.roles != FC_RPORT_ROLE_UNKNOWN) 3916 fc_remote_port_rolechg(rport, rport_ids.roles); 3917 3918 lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_NODE, 3919 "3183 rport register x%06x, rport %p role x%x\n", 3920 ndlp->nlp_DID, rport, rport_ids.roles); 3921 3922 if ((rport->scsi_target_id != -1) && 3923 (rport->scsi_target_id < LPFC_MAX_TARGET)) { 3924 ndlp->nlp_sid = rport->scsi_target_id; 3925 } 3926 return; 3927 } 3928 3929 static void 3930 lpfc_unregister_remote_port(struct lpfc_nodelist *ndlp) 3931 { 3932 struct fc_rport *rport = ndlp->rport; 3933 3934 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_RPORT, 3935 "rport delete: did:x%x flg:x%x type x%x", 3936 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type); 3937 3938 lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_NODE, 3939 "3184 rport unregister x%06x, rport %p\n", 3940 ndlp->nlp_DID, rport); 3941 3942 fc_remote_port_delete(rport); 3943 3944 return; 3945 } 3946 3947 static void 3948 lpfc_nlp_counters(struct lpfc_vport *vport, int state, int count) 3949 { 3950 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 3951 3952 spin_lock_irq(shost->host_lock); 3953 switch (state) { 3954 case NLP_STE_UNUSED_NODE: 3955 vport->fc_unused_cnt += count; 3956 break; 3957 case NLP_STE_PLOGI_ISSUE: 3958 vport->fc_plogi_cnt += count; 3959 break; 3960 case NLP_STE_ADISC_ISSUE: 3961 vport->fc_adisc_cnt += count; 3962 break; 3963 case NLP_STE_REG_LOGIN_ISSUE: 3964 vport->fc_reglogin_cnt += count; 3965 break; 3966 case NLP_STE_PRLI_ISSUE: 3967 vport->fc_prli_cnt += count; 3968 break; 3969 case NLP_STE_UNMAPPED_NODE: 3970 vport->fc_unmap_cnt += count; 3971 break; 3972 case NLP_STE_MAPPED_NODE: 3973 vport->fc_map_cnt += count; 3974 break; 3975 case NLP_STE_NPR_NODE: 3976 vport->fc_npr_cnt += count; 3977 break; 3978 } 3979 spin_unlock_irq(shost->host_lock); 3980 } 3981 3982 static void 3983 lpfc_nlp_state_cleanup(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 3984 int old_state, int new_state) 3985 { 3986 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 3987 3988 if (new_state == NLP_STE_UNMAPPED_NODE) { 3989 ndlp->nlp_flag &= ~NLP_NODEV_REMOVE; 3990 ndlp->nlp_type |= NLP_FC_NODE; 3991 } 3992 if (new_state == NLP_STE_MAPPED_NODE) 3993 ndlp->nlp_flag &= ~NLP_NODEV_REMOVE; 3994 if (new_state == NLP_STE_NPR_NODE) 3995 ndlp->nlp_flag &= ~NLP_RCV_PLOGI; 3996 3997 /* Transport interface */ 3998 if (ndlp->rport && (old_state == NLP_STE_MAPPED_NODE || 3999 old_state == NLP_STE_UNMAPPED_NODE)) { 4000 vport->phba->nport_event_cnt++; 4001 lpfc_unregister_remote_port(ndlp); 4002 } 4003 4004 if (new_state == NLP_STE_MAPPED_NODE || 4005 new_state == NLP_STE_UNMAPPED_NODE) { 4006 vport->phba->nport_event_cnt++; 4007 /* 4008 * Tell the fc transport about the port, if we haven't 4009 * already. If we have, and it's a scsi entity, be 4010 * sure to unblock any attached scsi devices 4011 */ 4012 lpfc_register_remote_port(vport, ndlp); 4013 } 4014 if ((new_state == NLP_STE_MAPPED_NODE) && 4015 (vport->stat_data_enabled)) { 4016 /* 4017 * A new target is discovered, if there is no buffer for 4018 * statistical data collection allocate buffer. 4019 */ 4020 ndlp->lat_data = kcalloc(LPFC_MAX_BUCKET_COUNT, 4021 sizeof(struct lpfc_scsicmd_bkt), 4022 GFP_KERNEL); 4023 4024 if (!ndlp->lat_data) 4025 lpfc_printf_vlog(vport, KERN_ERR, LOG_NODE, 4026 "0286 lpfc_nlp_state_cleanup failed to " 4027 "allocate statistical data buffer DID " 4028 "0x%x\n", ndlp->nlp_DID); 4029 } 4030 /* 4031 * if we added to Mapped list, but the remote port 4032 * registration failed or assigned a target id outside 4033 * our presentable range - move the node to the 4034 * Unmapped List 4035 */ 4036 if (new_state == NLP_STE_MAPPED_NODE && 4037 (!ndlp->rport || 4038 ndlp->rport->scsi_target_id == -1 || 4039 ndlp->rport->scsi_target_id >= LPFC_MAX_TARGET)) { 4040 spin_lock_irq(shost->host_lock); 4041 ndlp->nlp_flag |= NLP_TGT_NO_SCSIID; 4042 spin_unlock_irq(shost->host_lock); 4043 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE); 4044 } 4045 } 4046 4047 static char * 4048 lpfc_nlp_state_name(char *buffer, size_t size, int state) 4049 { 4050 static char *states[] = { 4051 [NLP_STE_UNUSED_NODE] = "UNUSED", 4052 [NLP_STE_PLOGI_ISSUE] = "PLOGI", 4053 [NLP_STE_ADISC_ISSUE] = "ADISC", 4054 [NLP_STE_REG_LOGIN_ISSUE] = "REGLOGIN", 4055 [NLP_STE_PRLI_ISSUE] = "PRLI", 4056 [NLP_STE_LOGO_ISSUE] = "LOGO", 4057 [NLP_STE_UNMAPPED_NODE] = "UNMAPPED", 4058 [NLP_STE_MAPPED_NODE] = "MAPPED", 4059 [NLP_STE_NPR_NODE] = "NPR", 4060 }; 4061 4062 if (state < NLP_STE_MAX_STATE && states[state]) 4063 strlcpy(buffer, states[state], size); 4064 else 4065 snprintf(buffer, size, "unknown (%d)", state); 4066 return buffer; 4067 } 4068 4069 void 4070 lpfc_nlp_set_state(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 4071 int state) 4072 { 4073 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 4074 int old_state = ndlp->nlp_state; 4075 char name1[16], name2[16]; 4076 4077 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE, 4078 "0904 NPort state transition x%06x, %s -> %s\n", 4079 ndlp->nlp_DID, 4080 lpfc_nlp_state_name(name1, sizeof(name1), old_state), 4081 lpfc_nlp_state_name(name2, sizeof(name2), state)); 4082 4083 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE, 4084 "node statechg did:x%x old:%d ste:%d", 4085 ndlp->nlp_DID, old_state, state); 4086 4087 if (old_state == NLP_STE_NPR_NODE && 4088 state != NLP_STE_NPR_NODE) 4089 lpfc_cancel_retry_delay_tmo(vport, ndlp); 4090 if (old_state == NLP_STE_UNMAPPED_NODE) { 4091 ndlp->nlp_flag &= ~NLP_TGT_NO_SCSIID; 4092 ndlp->nlp_type &= ~NLP_FC_NODE; 4093 } 4094 4095 if (list_empty(&ndlp->nlp_listp)) { 4096 spin_lock_irq(shost->host_lock); 4097 list_add_tail(&ndlp->nlp_listp, &vport->fc_nodes); 4098 spin_unlock_irq(shost->host_lock); 4099 } else if (old_state) 4100 lpfc_nlp_counters(vport, old_state, -1); 4101 4102 ndlp->nlp_state = state; 4103 lpfc_nlp_counters(vport, state, 1); 4104 lpfc_nlp_state_cleanup(vport, ndlp, old_state, state); 4105 } 4106 4107 void 4108 lpfc_enqueue_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) 4109 { 4110 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 4111 4112 if (list_empty(&ndlp->nlp_listp)) { 4113 spin_lock_irq(shost->host_lock); 4114 list_add_tail(&ndlp->nlp_listp, &vport->fc_nodes); 4115 spin_unlock_irq(shost->host_lock); 4116 } 4117 } 4118 4119 void 4120 lpfc_dequeue_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) 4121 { 4122 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 4123 4124 lpfc_cancel_retry_delay_tmo(vport, ndlp); 4125 if (ndlp->nlp_state && !list_empty(&ndlp->nlp_listp)) 4126 lpfc_nlp_counters(vport, ndlp->nlp_state, -1); 4127 spin_lock_irq(shost->host_lock); 4128 list_del_init(&ndlp->nlp_listp); 4129 spin_unlock_irq(shost->host_lock); 4130 lpfc_nlp_state_cleanup(vport, ndlp, ndlp->nlp_state, 4131 NLP_STE_UNUSED_NODE); 4132 } 4133 4134 static void 4135 lpfc_disable_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) 4136 { 4137 lpfc_cancel_retry_delay_tmo(vport, ndlp); 4138 if (ndlp->nlp_state && !list_empty(&ndlp->nlp_listp)) 4139 lpfc_nlp_counters(vport, ndlp->nlp_state, -1); 4140 lpfc_nlp_state_cleanup(vport, ndlp, ndlp->nlp_state, 4141 NLP_STE_UNUSED_NODE); 4142 } 4143 /** 4144 * lpfc_initialize_node - Initialize all fields of node object 4145 * @vport: Pointer to Virtual Port object. 4146 * @ndlp: Pointer to FC node object. 4147 * @did: FC_ID of the node. 4148 * 4149 * This function is always called when node object need to be initialized. 4150 * It initializes all the fields of the node object. Although the reference 4151 * to phba from @ndlp can be obtained indirectly through it's reference to 4152 * @vport, a direct reference to phba is taken here by @ndlp. This is due 4153 * to the life-span of the @ndlp might go beyond the existence of @vport as 4154 * the final release of ndlp is determined by its reference count. And, the 4155 * operation on @ndlp needs the reference to phba. 4156 **/ 4157 static inline void 4158 lpfc_initialize_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 4159 uint32_t did) 4160 { 4161 INIT_LIST_HEAD(&ndlp->els_retry_evt.evt_listp); 4162 INIT_LIST_HEAD(&ndlp->dev_loss_evt.evt_listp); 4163 init_timer(&ndlp->nlp_delayfunc); 4164 ndlp->nlp_delayfunc.function = lpfc_els_retry_delay; 4165 ndlp->nlp_delayfunc.data = (unsigned long)ndlp; 4166 ndlp->nlp_DID = did; 4167 ndlp->vport = vport; 4168 ndlp->phba = vport->phba; 4169 ndlp->nlp_sid = NLP_NO_SID; 4170 kref_init(&ndlp->kref); 4171 NLP_INT_NODE_ACT(ndlp); 4172 atomic_set(&ndlp->cmd_pending, 0); 4173 ndlp->cmd_qdepth = vport->cfg_tgt_queue_depth; 4174 if (vport->phba->sli_rev == LPFC_SLI_REV4) 4175 ndlp->nlp_rpi = lpfc_sli4_alloc_rpi(vport->phba); 4176 } 4177 4178 struct lpfc_nodelist * 4179 lpfc_enable_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 4180 int state) 4181 { 4182 struct lpfc_hba *phba = vport->phba; 4183 uint32_t did; 4184 unsigned long flags; 4185 4186 if (!ndlp) 4187 return NULL; 4188 4189 spin_lock_irqsave(&phba->ndlp_lock, flags); 4190 /* The ndlp should not be in memory free mode */ 4191 if (NLP_CHK_FREE_REQ(ndlp)) { 4192 spin_unlock_irqrestore(&phba->ndlp_lock, flags); 4193 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NODE, 4194 "0277 lpfc_enable_node: ndlp:x%p " 4195 "usgmap:x%x refcnt:%d\n", 4196 (void *)ndlp, ndlp->nlp_usg_map, 4197 atomic_read(&ndlp->kref.refcount)); 4198 return NULL; 4199 } 4200 /* The ndlp should not already be in active mode */ 4201 if (NLP_CHK_NODE_ACT(ndlp)) { 4202 spin_unlock_irqrestore(&phba->ndlp_lock, flags); 4203 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NODE, 4204 "0278 lpfc_enable_node: ndlp:x%p " 4205 "usgmap:x%x refcnt:%d\n", 4206 (void *)ndlp, ndlp->nlp_usg_map, 4207 atomic_read(&ndlp->kref.refcount)); 4208 return NULL; 4209 } 4210 4211 /* Keep the original DID */ 4212 did = ndlp->nlp_DID; 4213 4214 /* re-initialize ndlp except of ndlp linked list pointer */ 4215 memset((((char *)ndlp) + sizeof (struct list_head)), 0, 4216 sizeof (struct lpfc_nodelist) - sizeof (struct list_head)); 4217 lpfc_initialize_node(vport, ndlp, did); 4218 4219 spin_unlock_irqrestore(&phba->ndlp_lock, flags); 4220 4221 if (state != NLP_STE_UNUSED_NODE) 4222 lpfc_nlp_set_state(vport, ndlp, state); 4223 4224 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE, 4225 "node enable: did:x%x", 4226 ndlp->nlp_DID, 0, 0); 4227 return ndlp; 4228 } 4229 4230 void 4231 lpfc_drop_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) 4232 { 4233 /* 4234 * Use of lpfc_drop_node and UNUSED list: lpfc_drop_node should 4235 * be used if we wish to issue the "last" lpfc_nlp_put() to remove 4236 * the ndlp from the vport. The ndlp marked as UNUSED on the list 4237 * until ALL other outstanding threads have completed. We check 4238 * that the ndlp not already in the UNUSED state before we proceed. 4239 */ 4240 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE) 4241 return; 4242 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNUSED_NODE); 4243 if (vport->phba->sli_rev == LPFC_SLI_REV4) 4244 lpfc_cleanup_vports_rrqs(vport, ndlp); 4245 lpfc_nlp_put(ndlp); 4246 return; 4247 } 4248 4249 /* 4250 * Start / ReStart rescue timer for Discovery / RSCN handling 4251 */ 4252 void 4253 lpfc_set_disctmo(struct lpfc_vport *vport) 4254 { 4255 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 4256 struct lpfc_hba *phba = vport->phba; 4257 uint32_t tmo; 4258 4259 if (vport->port_state == LPFC_LOCAL_CFG_LINK) { 4260 /* For FAN, timeout should be greater than edtov */ 4261 tmo = (((phba->fc_edtov + 999) / 1000) + 1); 4262 } else { 4263 /* Normal discovery timeout should be > than ELS/CT timeout 4264 * FC spec states we need 3 * ratov for CT requests 4265 */ 4266 tmo = ((phba->fc_ratov * 3) + 3); 4267 } 4268 4269 4270 if (!timer_pending(&vport->fc_disctmo)) { 4271 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, 4272 "set disc timer: tmo:x%x state:x%x flg:x%x", 4273 tmo, vport->port_state, vport->fc_flag); 4274 } 4275 4276 mod_timer(&vport->fc_disctmo, jiffies + msecs_to_jiffies(1000 * tmo)); 4277 spin_lock_irq(shost->host_lock); 4278 vport->fc_flag |= FC_DISC_TMO; 4279 spin_unlock_irq(shost->host_lock); 4280 4281 /* Start Discovery Timer state <hba_state> */ 4282 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, 4283 "0247 Start Discovery Timer state x%x " 4284 "Data: x%x x%lx x%x x%x\n", 4285 vport->port_state, tmo, 4286 (unsigned long)&vport->fc_disctmo, vport->fc_plogi_cnt, 4287 vport->fc_adisc_cnt); 4288 4289 return; 4290 } 4291 4292 /* 4293 * Cancel rescue timer for Discovery / RSCN handling 4294 */ 4295 int 4296 lpfc_can_disctmo(struct lpfc_vport *vport) 4297 { 4298 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 4299 unsigned long iflags; 4300 4301 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, 4302 "can disc timer: state:x%x rtry:x%x flg:x%x", 4303 vport->port_state, vport->fc_ns_retry, vport->fc_flag); 4304 4305 /* Turn off discovery timer if its running */ 4306 if (vport->fc_flag & FC_DISC_TMO) { 4307 spin_lock_irqsave(shost->host_lock, iflags); 4308 vport->fc_flag &= ~FC_DISC_TMO; 4309 spin_unlock_irqrestore(shost->host_lock, iflags); 4310 del_timer_sync(&vport->fc_disctmo); 4311 spin_lock_irqsave(&vport->work_port_lock, iflags); 4312 vport->work_port_events &= ~WORKER_DISC_TMO; 4313 spin_unlock_irqrestore(&vport->work_port_lock, iflags); 4314 } 4315 4316 /* Cancel Discovery Timer state <hba_state> */ 4317 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, 4318 "0248 Cancel Discovery Timer state x%x " 4319 "Data: x%x x%x x%x\n", 4320 vport->port_state, vport->fc_flag, 4321 vport->fc_plogi_cnt, vport->fc_adisc_cnt); 4322 return 0; 4323 } 4324 4325 /* 4326 * Check specified ring for outstanding IOCB on the SLI queue 4327 * Return true if iocb matches the specified nport 4328 */ 4329 int 4330 lpfc_check_sli_ndlp(struct lpfc_hba *phba, 4331 struct lpfc_sli_ring *pring, 4332 struct lpfc_iocbq *iocb, 4333 struct lpfc_nodelist *ndlp) 4334 { 4335 struct lpfc_sli *psli = &phba->sli; 4336 IOCB_t *icmd = &iocb->iocb; 4337 struct lpfc_vport *vport = ndlp->vport; 4338 4339 if (iocb->vport != vport) 4340 return 0; 4341 4342 if (pring->ringno == LPFC_ELS_RING) { 4343 switch (icmd->ulpCommand) { 4344 case CMD_GEN_REQUEST64_CR: 4345 if (iocb->context_un.ndlp == ndlp) 4346 return 1; 4347 case CMD_ELS_REQUEST64_CR: 4348 if (icmd->un.elsreq64.remoteID == ndlp->nlp_DID) 4349 return 1; 4350 case CMD_XMIT_ELS_RSP64_CX: 4351 if (iocb->context1 == (uint8_t *) ndlp) 4352 return 1; 4353 } 4354 } else if (pring->ringno == psli->extra_ring) { 4355 4356 } else if (pring->ringno == psli->fcp_ring) { 4357 /* Skip match check if waiting to relogin to FCP target */ 4358 if ((ndlp->nlp_type & NLP_FCP_TARGET) && 4359 (ndlp->nlp_flag & NLP_DELAY_TMO)) { 4360 return 0; 4361 } 4362 if (icmd->ulpContext == (volatile ushort)ndlp->nlp_rpi) { 4363 return 1; 4364 } 4365 } else if (pring->ringno == psli->next_ring) { 4366 4367 } 4368 return 0; 4369 } 4370 4371 /* 4372 * Free resources / clean up outstanding I/Os 4373 * associated with nlp_rpi in the LPFC_NODELIST entry. 4374 */ 4375 static int 4376 lpfc_no_rpi(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp) 4377 { 4378 LIST_HEAD(completions); 4379 struct lpfc_sli *psli; 4380 struct lpfc_sli_ring *pring; 4381 struct lpfc_iocbq *iocb, *next_iocb; 4382 uint32_t i; 4383 4384 lpfc_fabric_abort_nport(ndlp); 4385 4386 /* 4387 * Everything that matches on txcmplq will be returned 4388 * by firmware with a no rpi error. 4389 */ 4390 psli = &phba->sli; 4391 if (ndlp->nlp_flag & NLP_RPI_REGISTERED) { 4392 /* Now process each ring */ 4393 for (i = 0; i < psli->num_rings; i++) { 4394 pring = &psli->ring[i]; 4395 4396 spin_lock_irq(&phba->hbalock); 4397 list_for_each_entry_safe(iocb, next_iocb, &pring->txq, 4398 list) { 4399 /* 4400 * Check to see if iocb matches the nport we are 4401 * looking for 4402 */ 4403 if ((lpfc_check_sli_ndlp(phba, pring, iocb, 4404 ndlp))) { 4405 /* It matches, so deque and call compl 4406 with an error */ 4407 list_move_tail(&iocb->list, 4408 &completions); 4409 } 4410 } 4411 spin_unlock_irq(&phba->hbalock); 4412 } 4413 } 4414 4415 /* Cancel all the IOCBs from the completions list */ 4416 lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT, 4417 IOERR_SLI_ABORTED); 4418 4419 return 0; 4420 } 4421 4422 /** 4423 * lpfc_nlp_logo_unreg - Unreg mailbox completion handler before LOGO 4424 * @phba: Pointer to HBA context object. 4425 * @pmb: Pointer to mailbox object. 4426 * 4427 * This function will issue an ELS LOGO command after completing 4428 * the UNREG_RPI. 4429 **/ 4430 void 4431 lpfc_nlp_logo_unreg(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 4432 { 4433 struct lpfc_vport *vport = pmb->vport; 4434 struct lpfc_nodelist *ndlp; 4435 4436 ndlp = (struct lpfc_nodelist *)(pmb->context1); 4437 if (!ndlp) 4438 return; 4439 lpfc_issue_els_logo(vport, ndlp, 0); 4440 } 4441 4442 /* 4443 * Free rpi associated with LPFC_NODELIST entry. 4444 * This routine is called from lpfc_freenode(), when we are removing 4445 * a LPFC_NODELIST entry. It is also called if the driver initiates a 4446 * LOGO that completes successfully, and we are waiting to PLOGI back 4447 * to the remote NPort. In addition, it is called after we receive 4448 * and unsolicated ELS cmd, send back a rsp, the rsp completes and 4449 * we are waiting to PLOGI back to the remote NPort. 4450 */ 4451 int 4452 lpfc_unreg_rpi(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) 4453 { 4454 struct lpfc_hba *phba = vport->phba; 4455 LPFC_MBOXQ_t *mbox; 4456 int rc; 4457 uint16_t rpi; 4458 4459 if (ndlp->nlp_flag & NLP_RPI_REGISTERED) { 4460 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 4461 if (mbox) { 4462 /* SLI4 ports require the physical rpi value. */ 4463 rpi = ndlp->nlp_rpi; 4464 if (phba->sli_rev == LPFC_SLI_REV4) 4465 rpi = phba->sli4_hba.rpi_ids[ndlp->nlp_rpi]; 4466 4467 lpfc_unreg_login(phba, vport->vpi, rpi, mbox); 4468 mbox->vport = vport; 4469 if (ndlp->nlp_flag & NLP_ISSUE_LOGO) { 4470 mbox->context1 = ndlp; 4471 mbox->mbox_cmpl = lpfc_nlp_logo_unreg; 4472 } else { 4473 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl; 4474 } 4475 4476 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT); 4477 if (rc == MBX_NOT_FINISHED) 4478 mempool_free(mbox, phba->mbox_mem_pool); 4479 } 4480 lpfc_no_rpi(phba, ndlp); 4481 4482 if (phba->sli_rev != LPFC_SLI_REV4) 4483 ndlp->nlp_rpi = 0; 4484 ndlp->nlp_flag &= ~NLP_RPI_REGISTERED; 4485 ndlp->nlp_flag &= ~NLP_NPR_ADISC; 4486 return 1; 4487 } 4488 return 0; 4489 } 4490 4491 /** 4492 * lpfc_unreg_hba_rpis - Unregister rpis registered to the hba. 4493 * @phba: pointer to lpfc hba data structure. 4494 * 4495 * This routine is invoked to unregister all the currently registered RPIs 4496 * to the HBA. 4497 **/ 4498 void 4499 lpfc_unreg_hba_rpis(struct lpfc_hba *phba) 4500 { 4501 struct lpfc_vport **vports; 4502 struct lpfc_nodelist *ndlp; 4503 struct Scsi_Host *shost; 4504 int i; 4505 4506 vports = lpfc_create_vport_work_array(phba); 4507 if (!vports) { 4508 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY, 4509 "2884 Vport array allocation failed \n"); 4510 return; 4511 } 4512 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) { 4513 shost = lpfc_shost_from_vport(vports[i]); 4514 spin_lock_irq(shost->host_lock); 4515 list_for_each_entry(ndlp, &vports[i]->fc_nodes, nlp_listp) { 4516 if (ndlp->nlp_flag & NLP_RPI_REGISTERED) { 4517 /* The mempool_alloc might sleep */ 4518 spin_unlock_irq(shost->host_lock); 4519 lpfc_unreg_rpi(vports[i], ndlp); 4520 spin_lock_irq(shost->host_lock); 4521 } 4522 } 4523 spin_unlock_irq(shost->host_lock); 4524 } 4525 lpfc_destroy_vport_work_array(phba, vports); 4526 } 4527 4528 void 4529 lpfc_unreg_all_rpis(struct lpfc_vport *vport) 4530 { 4531 struct lpfc_hba *phba = vport->phba; 4532 LPFC_MBOXQ_t *mbox; 4533 int rc; 4534 4535 if (phba->sli_rev == LPFC_SLI_REV4) { 4536 lpfc_sli4_unreg_all_rpis(vport); 4537 return; 4538 } 4539 4540 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 4541 if (mbox) { 4542 lpfc_unreg_login(phba, vport->vpi, LPFC_UNREG_ALL_RPIS_VPORT, 4543 mbox); 4544 mbox->vport = vport; 4545 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl; 4546 mbox->context1 = NULL; 4547 rc = lpfc_sli_issue_mbox_wait(phba, mbox, LPFC_MBOX_TMO); 4548 if (rc != MBX_TIMEOUT) 4549 mempool_free(mbox, phba->mbox_mem_pool); 4550 4551 if ((rc == MBX_TIMEOUT) || (rc == MBX_NOT_FINISHED)) 4552 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX | LOG_VPORT, 4553 "1836 Could not issue " 4554 "unreg_login(all_rpis) status %d\n", rc); 4555 } 4556 } 4557 4558 void 4559 lpfc_unreg_default_rpis(struct lpfc_vport *vport) 4560 { 4561 struct lpfc_hba *phba = vport->phba; 4562 LPFC_MBOXQ_t *mbox; 4563 int rc; 4564 4565 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 4566 if (mbox) { 4567 lpfc_unreg_did(phba, vport->vpi, LPFC_UNREG_ALL_DFLT_RPIS, 4568 mbox); 4569 mbox->vport = vport; 4570 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl; 4571 mbox->context1 = NULL; 4572 rc = lpfc_sli_issue_mbox_wait(phba, mbox, LPFC_MBOX_TMO); 4573 if (rc != MBX_TIMEOUT) 4574 mempool_free(mbox, phba->mbox_mem_pool); 4575 4576 if ((rc == MBX_TIMEOUT) || (rc == MBX_NOT_FINISHED)) 4577 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX | LOG_VPORT, 4578 "1815 Could not issue " 4579 "unreg_did (default rpis) status %d\n", 4580 rc); 4581 } 4582 } 4583 4584 /* 4585 * Free resources associated with LPFC_NODELIST entry 4586 * so it can be freed. 4587 */ 4588 static int 4589 lpfc_cleanup_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) 4590 { 4591 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 4592 struct lpfc_hba *phba = vport->phba; 4593 LPFC_MBOXQ_t *mb, *nextmb; 4594 struct lpfc_dmabuf *mp; 4595 4596 /* Cleanup node for NPort <nlp_DID> */ 4597 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE, 4598 "0900 Cleanup node for NPort x%x " 4599 "Data: x%x x%x x%x\n", 4600 ndlp->nlp_DID, ndlp->nlp_flag, 4601 ndlp->nlp_state, ndlp->nlp_rpi); 4602 if (NLP_CHK_FREE_REQ(ndlp)) { 4603 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NODE, 4604 "0280 lpfc_cleanup_node: ndlp:x%p " 4605 "usgmap:x%x refcnt:%d\n", 4606 (void *)ndlp, ndlp->nlp_usg_map, 4607 atomic_read(&ndlp->kref.refcount)); 4608 lpfc_dequeue_node(vport, ndlp); 4609 } else { 4610 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NODE, 4611 "0281 lpfc_cleanup_node: ndlp:x%p " 4612 "usgmap:x%x refcnt:%d\n", 4613 (void *)ndlp, ndlp->nlp_usg_map, 4614 atomic_read(&ndlp->kref.refcount)); 4615 lpfc_disable_node(vport, ndlp); 4616 } 4617 4618 4619 /* Don't need to clean up REG_LOGIN64 cmds for Default RPI cleanup */ 4620 4621 /* cleanup any ndlp on mbox q waiting for reglogin cmpl */ 4622 if ((mb = phba->sli.mbox_active)) { 4623 if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) && 4624 !(mb->mbox_flag & LPFC_MBX_IMED_UNREG) && 4625 (ndlp == (struct lpfc_nodelist *) mb->context2)) { 4626 mb->context2 = NULL; 4627 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl; 4628 } 4629 } 4630 4631 spin_lock_irq(&phba->hbalock); 4632 /* Cleanup REG_LOGIN completions which are not yet processed */ 4633 list_for_each_entry(mb, &phba->sli.mboxq_cmpl, list) { 4634 if ((mb->u.mb.mbxCommand != MBX_REG_LOGIN64) || 4635 (mb->mbox_flag & LPFC_MBX_IMED_UNREG) || 4636 (ndlp != (struct lpfc_nodelist *) mb->context2)) 4637 continue; 4638 4639 mb->context2 = NULL; 4640 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl; 4641 } 4642 4643 list_for_each_entry_safe(mb, nextmb, &phba->sli.mboxq, list) { 4644 if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) && 4645 !(mb->mbox_flag & LPFC_MBX_IMED_UNREG) && 4646 (ndlp == (struct lpfc_nodelist *) mb->context2)) { 4647 mp = (struct lpfc_dmabuf *) (mb->context1); 4648 if (mp) { 4649 __lpfc_mbuf_free(phba, mp->virt, mp->phys); 4650 kfree(mp); 4651 } 4652 list_del(&mb->list); 4653 mempool_free(mb, phba->mbox_mem_pool); 4654 /* We shall not invoke the lpfc_nlp_put to decrement 4655 * the ndlp reference count as we are in the process 4656 * of lpfc_nlp_release. 4657 */ 4658 } 4659 } 4660 spin_unlock_irq(&phba->hbalock); 4661 4662 lpfc_els_abort(phba, ndlp); 4663 4664 spin_lock_irq(shost->host_lock); 4665 ndlp->nlp_flag &= ~NLP_DELAY_TMO; 4666 spin_unlock_irq(shost->host_lock); 4667 4668 ndlp->nlp_last_elscmd = 0; 4669 del_timer_sync(&ndlp->nlp_delayfunc); 4670 4671 list_del_init(&ndlp->els_retry_evt.evt_listp); 4672 list_del_init(&ndlp->dev_loss_evt.evt_listp); 4673 lpfc_cleanup_vports_rrqs(vport, ndlp); 4674 lpfc_unreg_rpi(vport, ndlp); 4675 4676 return 0; 4677 } 4678 4679 /* 4680 * Check to see if we can free the nlp back to the freelist. 4681 * If we are in the middle of using the nlp in the discovery state 4682 * machine, defer the free till we reach the end of the state machine. 4683 */ 4684 static void 4685 lpfc_nlp_remove(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) 4686 { 4687 struct lpfc_hba *phba = vport->phba; 4688 struct lpfc_rport_data *rdata; 4689 LPFC_MBOXQ_t *mbox; 4690 int rc; 4691 4692 lpfc_cancel_retry_delay_tmo(vport, ndlp); 4693 if ((ndlp->nlp_flag & NLP_DEFER_RM) && 4694 !(ndlp->nlp_flag & NLP_REG_LOGIN_SEND) && 4695 !(ndlp->nlp_flag & NLP_RPI_REGISTERED)) { 4696 /* For this case we need to cleanup the default rpi 4697 * allocated by the firmware. 4698 */ 4699 if ((mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL)) 4700 != NULL) { 4701 rc = lpfc_reg_rpi(phba, vport->vpi, ndlp->nlp_DID, 4702 (uint8_t *) &vport->fc_sparam, mbox, ndlp->nlp_rpi); 4703 if (rc) { 4704 mempool_free(mbox, phba->mbox_mem_pool); 4705 } 4706 else { 4707 mbox->mbox_flag |= LPFC_MBX_IMED_UNREG; 4708 mbox->mbox_cmpl = lpfc_mbx_cmpl_dflt_rpi; 4709 mbox->vport = vport; 4710 mbox->context2 = ndlp; 4711 rc =lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT); 4712 if (rc == MBX_NOT_FINISHED) { 4713 mempool_free(mbox, phba->mbox_mem_pool); 4714 } 4715 } 4716 } 4717 } 4718 lpfc_cleanup_node(vport, ndlp); 4719 4720 /* 4721 * We can get here with a non-NULL ndlp->rport because when we 4722 * unregister a rport we don't break the rport/node linkage. So if we 4723 * do, make sure we don't leaving any dangling pointers behind. 4724 */ 4725 if (ndlp->rport) { 4726 rdata = ndlp->rport->dd_data; 4727 rdata->pnode = NULL; 4728 ndlp->rport = NULL; 4729 } 4730 } 4731 4732 static int 4733 lpfc_matchdid(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 4734 uint32_t did) 4735 { 4736 D_ID mydid, ndlpdid, matchdid; 4737 4738 if (did == Bcast_DID) 4739 return 0; 4740 4741 /* First check for Direct match */ 4742 if (ndlp->nlp_DID == did) 4743 return 1; 4744 4745 /* Next check for area/domain identically equals 0 match */ 4746 mydid.un.word = vport->fc_myDID; 4747 if ((mydid.un.b.domain == 0) && (mydid.un.b.area == 0)) { 4748 return 0; 4749 } 4750 4751 matchdid.un.word = did; 4752 ndlpdid.un.word = ndlp->nlp_DID; 4753 if (matchdid.un.b.id == ndlpdid.un.b.id) { 4754 if ((mydid.un.b.domain == matchdid.un.b.domain) && 4755 (mydid.un.b.area == matchdid.un.b.area)) { 4756 if ((ndlpdid.un.b.domain == 0) && 4757 (ndlpdid.un.b.area == 0)) { 4758 if (ndlpdid.un.b.id) 4759 return 1; 4760 } 4761 return 0; 4762 } 4763 4764 matchdid.un.word = ndlp->nlp_DID; 4765 if ((mydid.un.b.domain == ndlpdid.un.b.domain) && 4766 (mydid.un.b.area == ndlpdid.un.b.area)) { 4767 if ((matchdid.un.b.domain == 0) && 4768 (matchdid.un.b.area == 0)) { 4769 if (matchdid.un.b.id) 4770 return 1; 4771 } 4772 } 4773 } 4774 return 0; 4775 } 4776 4777 /* Search for a nodelist entry */ 4778 static struct lpfc_nodelist * 4779 __lpfc_findnode_did(struct lpfc_vport *vport, uint32_t did) 4780 { 4781 struct lpfc_nodelist *ndlp; 4782 uint32_t data1; 4783 4784 list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) { 4785 if (lpfc_matchdid(vport, ndlp, did)) { 4786 data1 = (((uint32_t) ndlp->nlp_state << 24) | 4787 ((uint32_t) ndlp->nlp_xri << 16) | 4788 ((uint32_t) ndlp->nlp_type << 8) | 4789 ((uint32_t) ndlp->nlp_rpi & 0xff)); 4790 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE, 4791 "0929 FIND node DID " 4792 "Data: x%p x%x x%x x%x\n", 4793 ndlp, ndlp->nlp_DID, 4794 ndlp->nlp_flag, data1); 4795 return ndlp; 4796 } 4797 } 4798 4799 /* FIND node did <did> NOT FOUND */ 4800 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE, 4801 "0932 FIND node did x%x NOT FOUND.\n", did); 4802 return NULL; 4803 } 4804 4805 struct lpfc_nodelist * 4806 lpfc_findnode_did(struct lpfc_vport *vport, uint32_t did) 4807 { 4808 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 4809 struct lpfc_nodelist *ndlp; 4810 unsigned long iflags; 4811 4812 spin_lock_irqsave(shost->host_lock, iflags); 4813 ndlp = __lpfc_findnode_did(vport, did); 4814 spin_unlock_irqrestore(shost->host_lock, iflags); 4815 return ndlp; 4816 } 4817 4818 struct lpfc_nodelist * 4819 lpfc_setup_disc_node(struct lpfc_vport *vport, uint32_t did) 4820 { 4821 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 4822 struct lpfc_nodelist *ndlp; 4823 4824 ndlp = lpfc_findnode_did(vport, did); 4825 if (!ndlp) { 4826 if ((vport->fc_flag & FC_RSCN_MODE) != 0 && 4827 lpfc_rscn_payload_check(vport, did) == 0) 4828 return NULL; 4829 ndlp = (struct lpfc_nodelist *) 4830 mempool_alloc(vport->phba->nlp_mem_pool, GFP_KERNEL); 4831 if (!ndlp) 4832 return NULL; 4833 lpfc_nlp_init(vport, ndlp, did); 4834 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE); 4835 spin_lock_irq(shost->host_lock); 4836 ndlp->nlp_flag |= NLP_NPR_2B_DISC; 4837 spin_unlock_irq(shost->host_lock); 4838 return ndlp; 4839 } else if (!NLP_CHK_NODE_ACT(ndlp)) { 4840 ndlp = lpfc_enable_node(vport, ndlp, NLP_STE_NPR_NODE); 4841 if (!ndlp) 4842 return NULL; 4843 spin_lock_irq(shost->host_lock); 4844 ndlp->nlp_flag |= NLP_NPR_2B_DISC; 4845 spin_unlock_irq(shost->host_lock); 4846 return ndlp; 4847 } 4848 4849 if ((vport->fc_flag & FC_RSCN_MODE) && 4850 !(vport->fc_flag & FC_NDISC_ACTIVE)) { 4851 if (lpfc_rscn_payload_check(vport, did)) { 4852 /* If we've already received a PLOGI from this NPort 4853 * we don't need to try to discover it again. 4854 */ 4855 if (ndlp->nlp_flag & NLP_RCV_PLOGI) 4856 return NULL; 4857 4858 /* Since this node is marked for discovery, 4859 * delay timeout is not needed. 4860 */ 4861 lpfc_cancel_retry_delay_tmo(vport, ndlp); 4862 spin_lock_irq(shost->host_lock); 4863 ndlp->nlp_flag |= NLP_NPR_2B_DISC; 4864 spin_unlock_irq(shost->host_lock); 4865 } else 4866 ndlp = NULL; 4867 } else { 4868 /* If we've already received a PLOGI from this NPort, 4869 * or we are already in the process of discovery on it, 4870 * we don't need to try to discover it again. 4871 */ 4872 if (ndlp->nlp_state == NLP_STE_ADISC_ISSUE || 4873 ndlp->nlp_state == NLP_STE_PLOGI_ISSUE || 4874 ndlp->nlp_flag & NLP_RCV_PLOGI) 4875 return NULL; 4876 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE); 4877 spin_lock_irq(shost->host_lock); 4878 ndlp->nlp_flag |= NLP_NPR_2B_DISC; 4879 spin_unlock_irq(shost->host_lock); 4880 } 4881 return ndlp; 4882 } 4883 4884 /* Build a list of nodes to discover based on the loopmap */ 4885 void 4886 lpfc_disc_list_loopmap(struct lpfc_vport *vport) 4887 { 4888 struct lpfc_hba *phba = vport->phba; 4889 int j; 4890 uint32_t alpa, index; 4891 4892 if (!lpfc_is_link_up(phba)) 4893 return; 4894 4895 if (phba->fc_topology != LPFC_TOPOLOGY_LOOP) 4896 return; 4897 4898 /* Check for loop map present or not */ 4899 if (phba->alpa_map[0]) { 4900 for (j = 1; j <= phba->alpa_map[0]; j++) { 4901 alpa = phba->alpa_map[j]; 4902 if (((vport->fc_myDID & 0xff) == alpa) || (alpa == 0)) 4903 continue; 4904 lpfc_setup_disc_node(vport, alpa); 4905 } 4906 } else { 4907 /* No alpamap, so try all alpa's */ 4908 for (j = 0; j < FC_MAXLOOP; j++) { 4909 /* If cfg_scan_down is set, start from highest 4910 * ALPA (0xef) to lowest (0x1). 4911 */ 4912 if (vport->cfg_scan_down) 4913 index = j; 4914 else 4915 index = FC_MAXLOOP - j - 1; 4916 alpa = lpfcAlpaArray[index]; 4917 if ((vport->fc_myDID & 0xff) == alpa) 4918 continue; 4919 lpfc_setup_disc_node(vport, alpa); 4920 } 4921 } 4922 return; 4923 } 4924 4925 void 4926 lpfc_issue_clear_la(struct lpfc_hba *phba, struct lpfc_vport *vport) 4927 { 4928 LPFC_MBOXQ_t *mbox; 4929 struct lpfc_sli *psli = &phba->sli; 4930 struct lpfc_sli_ring *extra_ring = &psli->ring[psli->extra_ring]; 4931 struct lpfc_sli_ring *fcp_ring = &psli->ring[psli->fcp_ring]; 4932 struct lpfc_sli_ring *next_ring = &psli->ring[psli->next_ring]; 4933 int rc; 4934 4935 /* 4936 * if it's not a physical port or if we already send 4937 * clear_la then don't send it. 4938 */ 4939 if ((phba->link_state >= LPFC_CLEAR_LA) || 4940 (vport->port_type != LPFC_PHYSICAL_PORT) || 4941 (phba->sli_rev == LPFC_SLI_REV4)) 4942 return; 4943 4944 /* Link up discovery */ 4945 if ((mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL)) != NULL) { 4946 phba->link_state = LPFC_CLEAR_LA; 4947 lpfc_clear_la(phba, mbox); 4948 mbox->mbox_cmpl = lpfc_mbx_cmpl_clear_la; 4949 mbox->vport = vport; 4950 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT); 4951 if (rc == MBX_NOT_FINISHED) { 4952 mempool_free(mbox, phba->mbox_mem_pool); 4953 lpfc_disc_flush_list(vport); 4954 extra_ring->flag &= ~LPFC_STOP_IOCB_EVENT; 4955 fcp_ring->flag &= ~LPFC_STOP_IOCB_EVENT; 4956 next_ring->flag &= ~LPFC_STOP_IOCB_EVENT; 4957 phba->link_state = LPFC_HBA_ERROR; 4958 } 4959 } 4960 } 4961 4962 /* Reg_vpi to tell firmware to resume normal operations */ 4963 void 4964 lpfc_issue_reg_vpi(struct lpfc_hba *phba, struct lpfc_vport *vport) 4965 { 4966 LPFC_MBOXQ_t *regvpimbox; 4967 4968 regvpimbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 4969 if (regvpimbox) { 4970 lpfc_reg_vpi(vport, regvpimbox); 4971 regvpimbox->mbox_cmpl = lpfc_mbx_cmpl_reg_vpi; 4972 regvpimbox->vport = vport; 4973 if (lpfc_sli_issue_mbox(phba, regvpimbox, MBX_NOWAIT) 4974 == MBX_NOT_FINISHED) { 4975 mempool_free(regvpimbox, phba->mbox_mem_pool); 4976 } 4977 } 4978 } 4979 4980 /* Start Link up / RSCN discovery on NPR nodes */ 4981 void 4982 lpfc_disc_start(struct lpfc_vport *vport) 4983 { 4984 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 4985 struct lpfc_hba *phba = vport->phba; 4986 uint32_t num_sent; 4987 uint32_t clear_la_pending; 4988 int did_changed; 4989 4990 if (!lpfc_is_link_up(phba)) { 4991 lpfc_printf_vlog(vport, KERN_INFO, LOG_SLI, 4992 "3315 Link is not up %x\n", 4993 phba->link_state); 4994 return; 4995 } 4996 4997 if (phba->link_state == LPFC_CLEAR_LA) 4998 clear_la_pending = 1; 4999 else 5000 clear_la_pending = 0; 5001 5002 if (vport->port_state < LPFC_VPORT_READY) 5003 vport->port_state = LPFC_DISC_AUTH; 5004 5005 lpfc_set_disctmo(vport); 5006 5007 if (vport->fc_prevDID == vport->fc_myDID) 5008 did_changed = 0; 5009 else 5010 did_changed = 1; 5011 5012 vport->fc_prevDID = vport->fc_myDID; 5013 vport->num_disc_nodes = 0; 5014 5015 /* Start Discovery state <hba_state> */ 5016 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, 5017 "0202 Start Discovery hba state x%x " 5018 "Data: x%x x%x x%x\n", 5019 vport->port_state, vport->fc_flag, vport->fc_plogi_cnt, 5020 vport->fc_adisc_cnt); 5021 5022 /* First do ADISCs - if any */ 5023 num_sent = lpfc_els_disc_adisc(vport); 5024 5025 if (num_sent) 5026 return; 5027 5028 /* Register the VPI for SLI3, NPIV only. */ 5029 if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) && 5030 !(vport->fc_flag & FC_PT2PT) && 5031 !(vport->fc_flag & FC_RSCN_MODE) && 5032 (phba->sli_rev < LPFC_SLI_REV4)) { 5033 if (vport->port_type == LPFC_PHYSICAL_PORT) 5034 lpfc_issue_clear_la(phba, vport); 5035 lpfc_issue_reg_vpi(phba, vport); 5036 return; 5037 } 5038 5039 /* 5040 * For SLI2, we need to set port_state to READY and continue 5041 * discovery. 5042 */ 5043 if (vport->port_state < LPFC_VPORT_READY && !clear_la_pending) { 5044 /* If we get here, there is nothing to ADISC */ 5045 if (vport->port_type == LPFC_PHYSICAL_PORT) 5046 lpfc_issue_clear_la(phba, vport); 5047 5048 if (!(vport->fc_flag & FC_ABORT_DISCOVERY)) { 5049 vport->num_disc_nodes = 0; 5050 /* go thru NPR nodes and issue ELS PLOGIs */ 5051 if (vport->fc_npr_cnt) 5052 lpfc_els_disc_plogi(vport); 5053 5054 if (!vport->num_disc_nodes) { 5055 spin_lock_irq(shost->host_lock); 5056 vport->fc_flag &= ~FC_NDISC_ACTIVE; 5057 spin_unlock_irq(shost->host_lock); 5058 lpfc_can_disctmo(vport); 5059 } 5060 } 5061 vport->port_state = LPFC_VPORT_READY; 5062 } else { 5063 /* Next do PLOGIs - if any */ 5064 num_sent = lpfc_els_disc_plogi(vport); 5065 5066 if (num_sent) 5067 return; 5068 5069 if (vport->fc_flag & FC_RSCN_MODE) { 5070 /* Check to see if more RSCNs came in while we 5071 * were processing this one. 5072 */ 5073 if ((vport->fc_rscn_id_cnt == 0) && 5074 (!(vport->fc_flag & FC_RSCN_DISCOVERY))) { 5075 spin_lock_irq(shost->host_lock); 5076 vport->fc_flag &= ~FC_RSCN_MODE; 5077 spin_unlock_irq(shost->host_lock); 5078 lpfc_can_disctmo(vport); 5079 } else 5080 lpfc_els_handle_rscn(vport); 5081 } 5082 } 5083 return; 5084 } 5085 5086 /* 5087 * Ignore completion for all IOCBs on tx and txcmpl queue for ELS 5088 * ring the match the sppecified nodelist. 5089 */ 5090 static void 5091 lpfc_free_tx(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp) 5092 { 5093 LIST_HEAD(completions); 5094 struct lpfc_sli *psli; 5095 IOCB_t *icmd; 5096 struct lpfc_iocbq *iocb, *next_iocb; 5097 struct lpfc_sli_ring *pring; 5098 5099 psli = &phba->sli; 5100 pring = &psli->ring[LPFC_ELS_RING]; 5101 5102 /* Error matching iocb on txq or txcmplq 5103 * First check the txq. 5104 */ 5105 spin_lock_irq(&phba->hbalock); 5106 list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) { 5107 if (iocb->context1 != ndlp) { 5108 continue; 5109 } 5110 icmd = &iocb->iocb; 5111 if ((icmd->ulpCommand == CMD_ELS_REQUEST64_CR) || 5112 (icmd->ulpCommand == CMD_XMIT_ELS_RSP64_CX)) { 5113 5114 list_move_tail(&iocb->list, &completions); 5115 } 5116 } 5117 5118 /* Next check the txcmplq */ 5119 list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq, list) { 5120 if (iocb->context1 != ndlp) { 5121 continue; 5122 } 5123 icmd = &iocb->iocb; 5124 if (icmd->ulpCommand == CMD_ELS_REQUEST64_CR || 5125 icmd->ulpCommand == CMD_XMIT_ELS_RSP64_CX) { 5126 lpfc_sli_issue_abort_iotag(phba, pring, iocb); 5127 } 5128 } 5129 spin_unlock_irq(&phba->hbalock); 5130 5131 /* Cancel all the IOCBs from the completions list */ 5132 lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT, 5133 IOERR_SLI_ABORTED); 5134 } 5135 5136 static void 5137 lpfc_disc_flush_list(struct lpfc_vport *vport) 5138 { 5139 struct lpfc_nodelist *ndlp, *next_ndlp; 5140 struct lpfc_hba *phba = vport->phba; 5141 5142 if (vport->fc_plogi_cnt || vport->fc_adisc_cnt) { 5143 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, 5144 nlp_listp) { 5145 if (!NLP_CHK_NODE_ACT(ndlp)) 5146 continue; 5147 if (ndlp->nlp_state == NLP_STE_PLOGI_ISSUE || 5148 ndlp->nlp_state == NLP_STE_ADISC_ISSUE) { 5149 lpfc_free_tx(phba, ndlp); 5150 } 5151 } 5152 } 5153 } 5154 5155 void 5156 lpfc_cleanup_discovery_resources(struct lpfc_vport *vport) 5157 { 5158 lpfc_els_flush_rscn(vport); 5159 lpfc_els_flush_cmd(vport); 5160 lpfc_disc_flush_list(vport); 5161 } 5162 5163 /*****************************************************************************/ 5164 /* 5165 * NAME: lpfc_disc_timeout 5166 * 5167 * FUNCTION: Fibre Channel driver discovery timeout routine. 5168 * 5169 * EXECUTION ENVIRONMENT: interrupt only 5170 * 5171 * CALLED FROM: 5172 * Timer function 5173 * 5174 * RETURNS: 5175 * none 5176 */ 5177 /*****************************************************************************/ 5178 void 5179 lpfc_disc_timeout(unsigned long ptr) 5180 { 5181 struct lpfc_vport *vport = (struct lpfc_vport *) ptr; 5182 struct lpfc_hba *phba = vport->phba; 5183 uint32_t tmo_posted; 5184 unsigned long flags = 0; 5185 5186 if (unlikely(!phba)) 5187 return; 5188 5189 spin_lock_irqsave(&vport->work_port_lock, flags); 5190 tmo_posted = vport->work_port_events & WORKER_DISC_TMO; 5191 if (!tmo_posted) 5192 vport->work_port_events |= WORKER_DISC_TMO; 5193 spin_unlock_irqrestore(&vport->work_port_lock, flags); 5194 5195 if (!tmo_posted) 5196 lpfc_worker_wake_up(phba); 5197 return; 5198 } 5199 5200 static void 5201 lpfc_disc_timeout_handler(struct lpfc_vport *vport) 5202 { 5203 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 5204 struct lpfc_hba *phba = vport->phba; 5205 struct lpfc_sli *psli = &phba->sli; 5206 struct lpfc_nodelist *ndlp, *next_ndlp; 5207 LPFC_MBOXQ_t *initlinkmbox; 5208 int rc, clrlaerr = 0; 5209 5210 if (!(vport->fc_flag & FC_DISC_TMO)) 5211 return; 5212 5213 spin_lock_irq(shost->host_lock); 5214 vport->fc_flag &= ~FC_DISC_TMO; 5215 spin_unlock_irq(shost->host_lock); 5216 5217 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, 5218 "disc timeout: state:x%x rtry:x%x flg:x%x", 5219 vport->port_state, vport->fc_ns_retry, vport->fc_flag); 5220 5221 switch (vport->port_state) { 5222 5223 case LPFC_LOCAL_CFG_LINK: 5224 /* port_state is identically LPFC_LOCAL_CFG_LINK while waiting for 5225 * FAN 5226 */ 5227 /* FAN timeout */ 5228 lpfc_printf_vlog(vport, KERN_WARNING, LOG_DISCOVERY, 5229 "0221 FAN timeout\n"); 5230 /* Start discovery by sending FLOGI, clean up old rpis */ 5231 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, 5232 nlp_listp) { 5233 if (!NLP_CHK_NODE_ACT(ndlp)) 5234 continue; 5235 if (ndlp->nlp_state != NLP_STE_NPR_NODE) 5236 continue; 5237 if (ndlp->nlp_type & NLP_FABRIC) { 5238 /* Clean up the ndlp on Fabric connections */ 5239 lpfc_drop_node(vport, ndlp); 5240 5241 } else if (!(ndlp->nlp_flag & NLP_NPR_ADISC)) { 5242 /* Fail outstanding IO now since device 5243 * is marked for PLOGI. 5244 */ 5245 lpfc_unreg_rpi(vport, ndlp); 5246 } 5247 } 5248 if (vport->port_state != LPFC_FLOGI) { 5249 if (phba->sli_rev <= LPFC_SLI_REV3) 5250 lpfc_initial_flogi(vport); 5251 else 5252 lpfc_issue_init_vfi(vport); 5253 return; 5254 } 5255 break; 5256 5257 case LPFC_FDISC: 5258 case LPFC_FLOGI: 5259 /* port_state is identically LPFC_FLOGI while waiting for FLOGI cmpl */ 5260 /* Initial FLOGI timeout */ 5261 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY, 5262 "0222 Initial %s timeout\n", 5263 vport->vpi ? "FDISC" : "FLOGI"); 5264 5265 /* Assume no Fabric and go on with discovery. 5266 * Check for outstanding ELS FLOGI to abort. 5267 */ 5268 5269 /* FLOGI failed, so just use loop map to make discovery list */ 5270 lpfc_disc_list_loopmap(vport); 5271 5272 /* Start discovery */ 5273 lpfc_disc_start(vport); 5274 break; 5275 5276 case LPFC_FABRIC_CFG_LINK: 5277 /* hba_state is identically LPFC_FABRIC_CFG_LINK while waiting for 5278 NameServer login */ 5279 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY, 5280 "0223 Timeout while waiting for " 5281 "NameServer login\n"); 5282 /* Next look for NameServer ndlp */ 5283 ndlp = lpfc_findnode_did(vport, NameServer_DID); 5284 if (ndlp && NLP_CHK_NODE_ACT(ndlp)) 5285 lpfc_els_abort(phba, ndlp); 5286 5287 /* ReStart discovery */ 5288 goto restart_disc; 5289 5290 case LPFC_NS_QRY: 5291 /* Check for wait for NameServer Rsp timeout */ 5292 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY, 5293 "0224 NameServer Query timeout " 5294 "Data: x%x x%x\n", 5295 vport->fc_ns_retry, LPFC_MAX_NS_RETRY); 5296 5297 if (vport->fc_ns_retry < LPFC_MAX_NS_RETRY) { 5298 /* Try it one more time */ 5299 vport->fc_ns_retry++; 5300 rc = lpfc_ns_cmd(vport, SLI_CTNS_GID_FT, 5301 vport->fc_ns_retry, 0); 5302 if (rc == 0) 5303 break; 5304 } 5305 vport->fc_ns_retry = 0; 5306 5307 restart_disc: 5308 /* 5309 * Discovery is over. 5310 * set port_state to PORT_READY if SLI2. 5311 * cmpl_reg_vpi will set port_state to READY for SLI3. 5312 */ 5313 if (phba->sli_rev < LPFC_SLI_REV4) { 5314 if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) 5315 lpfc_issue_reg_vpi(phba, vport); 5316 else { 5317 lpfc_issue_clear_la(phba, vport); 5318 vport->port_state = LPFC_VPORT_READY; 5319 } 5320 } 5321 5322 /* Setup and issue mailbox INITIALIZE LINK command */ 5323 initlinkmbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 5324 if (!initlinkmbox) { 5325 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY, 5326 "0206 Device Discovery " 5327 "completion error\n"); 5328 phba->link_state = LPFC_HBA_ERROR; 5329 break; 5330 } 5331 5332 lpfc_linkdown(phba); 5333 lpfc_init_link(phba, initlinkmbox, phba->cfg_topology, 5334 phba->cfg_link_speed); 5335 initlinkmbox->u.mb.un.varInitLnk.lipsr_AL_PA = 0; 5336 initlinkmbox->vport = vport; 5337 initlinkmbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl; 5338 rc = lpfc_sli_issue_mbox(phba, initlinkmbox, MBX_NOWAIT); 5339 lpfc_set_loopback_flag(phba); 5340 if (rc == MBX_NOT_FINISHED) 5341 mempool_free(initlinkmbox, phba->mbox_mem_pool); 5342 5343 break; 5344 5345 case LPFC_DISC_AUTH: 5346 /* Node Authentication timeout */ 5347 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY, 5348 "0227 Node Authentication timeout\n"); 5349 lpfc_disc_flush_list(vport); 5350 5351 /* 5352 * set port_state to PORT_READY if SLI2. 5353 * cmpl_reg_vpi will set port_state to READY for SLI3. 5354 */ 5355 if (phba->sli_rev < LPFC_SLI_REV4) { 5356 if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) 5357 lpfc_issue_reg_vpi(phba, vport); 5358 else { /* NPIV Not enabled */ 5359 lpfc_issue_clear_la(phba, vport); 5360 vport->port_state = LPFC_VPORT_READY; 5361 } 5362 } 5363 break; 5364 5365 case LPFC_VPORT_READY: 5366 if (vport->fc_flag & FC_RSCN_MODE) { 5367 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY, 5368 "0231 RSCN timeout Data: x%x " 5369 "x%x\n", 5370 vport->fc_ns_retry, LPFC_MAX_NS_RETRY); 5371 5372 /* Cleanup any outstanding ELS commands */ 5373 lpfc_els_flush_cmd(vport); 5374 5375 lpfc_els_flush_rscn(vport); 5376 lpfc_disc_flush_list(vport); 5377 } 5378 break; 5379 5380 default: 5381 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY, 5382 "0273 Unexpected discovery timeout, " 5383 "vport State x%x\n", vport->port_state); 5384 break; 5385 } 5386 5387 switch (phba->link_state) { 5388 case LPFC_CLEAR_LA: 5389 /* CLEAR LA timeout */ 5390 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY, 5391 "0228 CLEAR LA timeout\n"); 5392 clrlaerr = 1; 5393 break; 5394 5395 case LPFC_LINK_UP: 5396 lpfc_issue_clear_la(phba, vport); 5397 /* Drop thru */ 5398 case LPFC_LINK_UNKNOWN: 5399 case LPFC_WARM_START: 5400 case LPFC_INIT_START: 5401 case LPFC_INIT_MBX_CMDS: 5402 case LPFC_LINK_DOWN: 5403 case LPFC_HBA_ERROR: 5404 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY, 5405 "0230 Unexpected timeout, hba link " 5406 "state x%x\n", phba->link_state); 5407 clrlaerr = 1; 5408 break; 5409 5410 case LPFC_HBA_READY: 5411 break; 5412 } 5413 5414 if (clrlaerr) { 5415 lpfc_disc_flush_list(vport); 5416 psli->ring[(psli->extra_ring)].flag &= ~LPFC_STOP_IOCB_EVENT; 5417 psli->ring[(psli->fcp_ring)].flag &= ~LPFC_STOP_IOCB_EVENT; 5418 psli->ring[(psli->next_ring)].flag &= ~LPFC_STOP_IOCB_EVENT; 5419 vport->port_state = LPFC_VPORT_READY; 5420 } 5421 5422 return; 5423 } 5424 5425 /* 5426 * This routine handles processing a NameServer REG_LOGIN mailbox 5427 * command upon completion. It is setup in the LPFC_MBOXQ 5428 * as the completion routine when the command is 5429 * handed off to the SLI layer. 5430 */ 5431 void 5432 lpfc_mbx_cmpl_fdmi_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 5433 { 5434 MAILBOX_t *mb = &pmb->u.mb; 5435 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1); 5436 struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) pmb->context2; 5437 struct lpfc_vport *vport = pmb->vport; 5438 5439 pmb->context1 = NULL; 5440 pmb->context2 = NULL; 5441 5442 if (phba->sli_rev < LPFC_SLI_REV4) 5443 ndlp->nlp_rpi = mb->un.varWords[0]; 5444 ndlp->nlp_flag |= NLP_RPI_REGISTERED; 5445 ndlp->nlp_type |= NLP_FABRIC; 5446 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE); 5447 5448 /* 5449 * Start issuing Fabric-Device Management Interface (FDMI) command to 5450 * 0xfffffa (FDMI well known port) or Delay issuing FDMI command if 5451 * fdmi-on=2 (supporting RPA/hostnmae) 5452 */ 5453 5454 if (vport->cfg_fdmi_on == 1) 5455 lpfc_fdmi_cmd(vport, ndlp, SLI_MGMT_DHBA); 5456 else 5457 mod_timer(&vport->fc_fdmitmo, 5458 jiffies + msecs_to_jiffies(1000 * 60)); 5459 5460 /* decrement the node reference count held for this callback 5461 * function. 5462 */ 5463 lpfc_nlp_put(ndlp); 5464 lpfc_mbuf_free(phba, mp->virt, mp->phys); 5465 kfree(mp); 5466 mempool_free(pmb, phba->mbox_mem_pool); 5467 5468 return; 5469 } 5470 5471 static int 5472 lpfc_filter_by_rpi(struct lpfc_nodelist *ndlp, void *param) 5473 { 5474 uint16_t *rpi = param; 5475 5476 /* check for active node */ 5477 if (!NLP_CHK_NODE_ACT(ndlp)) 5478 return 0; 5479 5480 return ndlp->nlp_rpi == *rpi; 5481 } 5482 5483 static int 5484 lpfc_filter_by_wwpn(struct lpfc_nodelist *ndlp, void *param) 5485 { 5486 return memcmp(&ndlp->nlp_portname, param, 5487 sizeof(ndlp->nlp_portname)) == 0; 5488 } 5489 5490 static struct lpfc_nodelist * 5491 __lpfc_find_node(struct lpfc_vport *vport, node_filter filter, void *param) 5492 { 5493 struct lpfc_nodelist *ndlp; 5494 5495 list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) { 5496 if (filter(ndlp, param)) { 5497 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE, 5498 "3185 FIND node filter %p DID " 5499 "Data: x%p x%x x%x\n", 5500 filter, ndlp, ndlp->nlp_DID, 5501 ndlp->nlp_flag); 5502 return ndlp; 5503 } 5504 } 5505 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE, 5506 "3186 FIND node filter %p NOT FOUND.\n", filter); 5507 return NULL; 5508 } 5509 5510 /* 5511 * This routine looks up the ndlp lists for the given RPI. If rpi found it 5512 * returns the node list element pointer else return NULL. 5513 */ 5514 struct lpfc_nodelist * 5515 __lpfc_findnode_rpi(struct lpfc_vport *vport, uint16_t rpi) 5516 { 5517 return __lpfc_find_node(vport, lpfc_filter_by_rpi, &rpi); 5518 } 5519 5520 /* 5521 * This routine looks up the ndlp lists for the given WWPN. If WWPN found it 5522 * returns the node element list pointer else return NULL. 5523 */ 5524 struct lpfc_nodelist * 5525 lpfc_findnode_wwpn(struct lpfc_vport *vport, struct lpfc_name *wwpn) 5526 { 5527 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 5528 struct lpfc_nodelist *ndlp; 5529 5530 spin_lock_irq(shost->host_lock); 5531 ndlp = __lpfc_find_node(vport, lpfc_filter_by_wwpn, wwpn); 5532 spin_unlock_irq(shost->host_lock); 5533 return ndlp; 5534 } 5535 5536 /* 5537 * This routine looks up the ndlp lists for the given RPI. If the rpi 5538 * is found, the routine returns the node element list pointer else 5539 * return NULL. 5540 */ 5541 struct lpfc_nodelist * 5542 lpfc_findnode_rpi(struct lpfc_vport *vport, uint16_t rpi) 5543 { 5544 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 5545 struct lpfc_nodelist *ndlp; 5546 5547 spin_lock_irq(shost->host_lock); 5548 ndlp = __lpfc_findnode_rpi(vport, rpi); 5549 spin_unlock_irq(shost->host_lock); 5550 return ndlp; 5551 } 5552 5553 /** 5554 * lpfc_find_vport_by_vpid - Find a vport on a HBA through vport identifier 5555 * @phba: pointer to lpfc hba data structure. 5556 * @vpi: the physical host virtual N_Port identifier. 5557 * 5558 * This routine finds a vport on a HBA (referred by @phba) through a 5559 * @vpi. The function walks the HBA's vport list and returns the address 5560 * of the vport with the matching @vpi. 5561 * 5562 * Return code 5563 * NULL - No vport with the matching @vpi found 5564 * Otherwise - Address to the vport with the matching @vpi. 5565 **/ 5566 struct lpfc_vport * 5567 lpfc_find_vport_by_vpid(struct lpfc_hba *phba, uint16_t vpi) 5568 { 5569 struct lpfc_vport *vport; 5570 unsigned long flags; 5571 int i = 0; 5572 5573 /* The physical ports are always vpi 0 - translate is unnecessary. */ 5574 if (vpi > 0) { 5575 /* 5576 * Translate the physical vpi to the logical vpi. The 5577 * vport stores the logical vpi. 5578 */ 5579 for (i = 0; i < phba->max_vpi; i++) { 5580 if (vpi == phba->vpi_ids[i]) 5581 break; 5582 } 5583 5584 if (i >= phba->max_vpi) { 5585 lpfc_printf_log(phba, KERN_ERR, LOG_ELS, 5586 "2936 Could not find Vport mapped " 5587 "to vpi %d\n", vpi); 5588 return NULL; 5589 } 5590 } 5591 5592 spin_lock_irqsave(&phba->hbalock, flags); 5593 list_for_each_entry(vport, &phba->port_list, listentry) { 5594 if (vport->vpi == i) { 5595 spin_unlock_irqrestore(&phba->hbalock, flags); 5596 return vport; 5597 } 5598 } 5599 spin_unlock_irqrestore(&phba->hbalock, flags); 5600 return NULL; 5601 } 5602 5603 void 5604 lpfc_nlp_init(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 5605 uint32_t did) 5606 { 5607 memset(ndlp, 0, sizeof (struct lpfc_nodelist)); 5608 5609 lpfc_initialize_node(vport, ndlp, did); 5610 INIT_LIST_HEAD(&ndlp->nlp_listp); 5611 5612 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE, 5613 "node init: did:x%x", 5614 ndlp->nlp_DID, 0, 0); 5615 5616 return; 5617 } 5618 5619 /* This routine releases all resources associated with a specifc NPort's ndlp 5620 * and mempool_free's the nodelist. 5621 */ 5622 static void 5623 lpfc_nlp_release(struct kref *kref) 5624 { 5625 struct lpfc_hba *phba; 5626 unsigned long flags; 5627 struct lpfc_nodelist *ndlp = container_of(kref, struct lpfc_nodelist, 5628 kref); 5629 5630 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE, 5631 "node release: did:x%x flg:x%x type:x%x", 5632 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type); 5633 5634 lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_NODE, 5635 "0279 lpfc_nlp_release: ndlp:x%p did %x " 5636 "usgmap:x%x refcnt:%d\n", 5637 (void *)ndlp, ndlp->nlp_DID, ndlp->nlp_usg_map, 5638 atomic_read(&ndlp->kref.refcount)); 5639 5640 /* remove ndlp from action. */ 5641 lpfc_nlp_remove(ndlp->vport, ndlp); 5642 5643 /* clear the ndlp active flag for all release cases */ 5644 phba = ndlp->phba; 5645 spin_lock_irqsave(&phba->ndlp_lock, flags); 5646 NLP_CLR_NODE_ACT(ndlp); 5647 spin_unlock_irqrestore(&phba->ndlp_lock, flags); 5648 if (phba->sli_rev == LPFC_SLI_REV4) 5649 lpfc_sli4_free_rpi(phba, ndlp->nlp_rpi); 5650 5651 /* free ndlp memory for final ndlp release */ 5652 if (NLP_CHK_FREE_REQ(ndlp)) { 5653 kfree(ndlp->lat_data); 5654 mempool_free(ndlp, ndlp->phba->nlp_mem_pool); 5655 } 5656 } 5657 5658 /* This routine bumps the reference count for a ndlp structure to ensure 5659 * that one discovery thread won't free a ndlp while another discovery thread 5660 * is using it. 5661 */ 5662 struct lpfc_nodelist * 5663 lpfc_nlp_get(struct lpfc_nodelist *ndlp) 5664 { 5665 struct lpfc_hba *phba; 5666 unsigned long flags; 5667 5668 if (ndlp) { 5669 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE, 5670 "node get: did:x%x flg:x%x refcnt:x%x", 5671 ndlp->nlp_DID, ndlp->nlp_flag, 5672 atomic_read(&ndlp->kref.refcount)); 5673 /* The check of ndlp usage to prevent incrementing the 5674 * ndlp reference count that is in the process of being 5675 * released. 5676 */ 5677 phba = ndlp->phba; 5678 spin_lock_irqsave(&phba->ndlp_lock, flags); 5679 if (!NLP_CHK_NODE_ACT(ndlp) || NLP_CHK_FREE_ACK(ndlp)) { 5680 spin_unlock_irqrestore(&phba->ndlp_lock, flags); 5681 lpfc_printf_vlog(ndlp->vport, KERN_WARNING, LOG_NODE, 5682 "0276 lpfc_nlp_get: ndlp:x%p " 5683 "usgmap:x%x refcnt:%d\n", 5684 (void *)ndlp, ndlp->nlp_usg_map, 5685 atomic_read(&ndlp->kref.refcount)); 5686 return NULL; 5687 } else 5688 kref_get(&ndlp->kref); 5689 spin_unlock_irqrestore(&phba->ndlp_lock, flags); 5690 } 5691 return ndlp; 5692 } 5693 5694 /* This routine decrements the reference count for a ndlp structure. If the 5695 * count goes to 0, this indicates the the associated nodelist should be 5696 * freed. Returning 1 indicates the ndlp resource has been released; on the 5697 * other hand, returning 0 indicates the ndlp resource has not been released 5698 * yet. 5699 */ 5700 int 5701 lpfc_nlp_put(struct lpfc_nodelist *ndlp) 5702 { 5703 struct lpfc_hba *phba; 5704 unsigned long flags; 5705 5706 if (!ndlp) 5707 return 1; 5708 5709 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE, 5710 "node put: did:x%x flg:x%x refcnt:x%x", 5711 ndlp->nlp_DID, ndlp->nlp_flag, 5712 atomic_read(&ndlp->kref.refcount)); 5713 phba = ndlp->phba; 5714 spin_lock_irqsave(&phba->ndlp_lock, flags); 5715 /* Check the ndlp memory free acknowledge flag to avoid the 5716 * possible race condition that kref_put got invoked again 5717 * after previous one has done ndlp memory free. 5718 */ 5719 if (NLP_CHK_FREE_ACK(ndlp)) { 5720 spin_unlock_irqrestore(&phba->ndlp_lock, flags); 5721 lpfc_printf_vlog(ndlp->vport, KERN_WARNING, LOG_NODE, 5722 "0274 lpfc_nlp_put: ndlp:x%p " 5723 "usgmap:x%x refcnt:%d\n", 5724 (void *)ndlp, ndlp->nlp_usg_map, 5725 atomic_read(&ndlp->kref.refcount)); 5726 return 1; 5727 } 5728 /* Check the ndlp inactivate log flag to avoid the possible 5729 * race condition that kref_put got invoked again after ndlp 5730 * is already in inactivating state. 5731 */ 5732 if (NLP_CHK_IACT_REQ(ndlp)) { 5733 spin_unlock_irqrestore(&phba->ndlp_lock, flags); 5734 lpfc_printf_vlog(ndlp->vport, KERN_WARNING, LOG_NODE, 5735 "0275 lpfc_nlp_put: ndlp:x%p " 5736 "usgmap:x%x refcnt:%d\n", 5737 (void *)ndlp, ndlp->nlp_usg_map, 5738 atomic_read(&ndlp->kref.refcount)); 5739 return 1; 5740 } 5741 /* For last put, mark the ndlp usage flags to make sure no 5742 * other kref_get and kref_put on the same ndlp shall get 5743 * in between the process when the final kref_put has been 5744 * invoked on this ndlp. 5745 */ 5746 if (atomic_read(&ndlp->kref.refcount) == 1) { 5747 /* Indicate ndlp is put to inactive state. */ 5748 NLP_SET_IACT_REQ(ndlp); 5749 /* Acknowledge ndlp memory free has been seen. */ 5750 if (NLP_CHK_FREE_REQ(ndlp)) 5751 NLP_SET_FREE_ACK(ndlp); 5752 } 5753 spin_unlock_irqrestore(&phba->ndlp_lock, flags); 5754 /* Note, the kref_put returns 1 when decrementing a reference 5755 * count that was 1, it invokes the release callback function, 5756 * but it still left the reference count as 1 (not actually 5757 * performs the last decrementation). Otherwise, it actually 5758 * decrements the reference count and returns 0. 5759 */ 5760 return kref_put(&ndlp->kref, lpfc_nlp_release); 5761 } 5762 5763 /* This routine free's the specified nodelist if it is not in use 5764 * by any other discovery thread. This routine returns 1 if the 5765 * ndlp has been freed. A return value of 0 indicates the ndlp is 5766 * not yet been released. 5767 */ 5768 int 5769 lpfc_nlp_not_used(struct lpfc_nodelist *ndlp) 5770 { 5771 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE, 5772 "node not used: did:x%x flg:x%x refcnt:x%x", 5773 ndlp->nlp_DID, ndlp->nlp_flag, 5774 atomic_read(&ndlp->kref.refcount)); 5775 if (atomic_read(&ndlp->kref.refcount) == 1) 5776 if (lpfc_nlp_put(ndlp)) 5777 return 1; 5778 return 0; 5779 } 5780 5781 /** 5782 * lpfc_fcf_inuse - Check if FCF can be unregistered. 5783 * @phba: Pointer to hba context object. 5784 * 5785 * This function iterate through all FC nodes associated 5786 * will all vports to check if there is any node with 5787 * fc_rports associated with it. If there is an fc_rport 5788 * associated with the node, then the node is either in 5789 * discovered state or its devloss_timer is pending. 5790 */ 5791 static int 5792 lpfc_fcf_inuse(struct lpfc_hba *phba) 5793 { 5794 struct lpfc_vport **vports; 5795 int i, ret = 0; 5796 struct lpfc_nodelist *ndlp; 5797 struct Scsi_Host *shost; 5798 5799 vports = lpfc_create_vport_work_array(phba); 5800 5801 /* If driver cannot allocate memory, indicate fcf is in use */ 5802 if (!vports) 5803 return 1; 5804 5805 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) { 5806 shost = lpfc_shost_from_vport(vports[i]); 5807 spin_lock_irq(shost->host_lock); 5808 /* 5809 * IF the CVL_RCVD bit is not set then we have sent the 5810 * flogi. 5811 * If dev_loss fires while we are waiting we do not want to 5812 * unreg the fcf. 5813 */ 5814 if (!(vports[i]->fc_flag & FC_VPORT_CVL_RCVD)) { 5815 spin_unlock_irq(shost->host_lock); 5816 ret = 1; 5817 goto out; 5818 } 5819 list_for_each_entry(ndlp, &vports[i]->fc_nodes, nlp_listp) { 5820 if (NLP_CHK_NODE_ACT(ndlp) && ndlp->rport && 5821 (ndlp->rport->roles & FC_RPORT_ROLE_FCP_TARGET)) { 5822 ret = 1; 5823 spin_unlock_irq(shost->host_lock); 5824 goto out; 5825 } else if (ndlp->nlp_flag & NLP_RPI_REGISTERED) { 5826 ret = 1; 5827 lpfc_printf_log(phba, KERN_INFO, LOG_ELS, 5828 "2624 RPI %x DID %x flag %x " 5829 "still logged in\n", 5830 ndlp->nlp_rpi, ndlp->nlp_DID, 5831 ndlp->nlp_flag); 5832 } 5833 } 5834 spin_unlock_irq(shost->host_lock); 5835 } 5836 out: 5837 lpfc_destroy_vport_work_array(phba, vports); 5838 return ret; 5839 } 5840 5841 /** 5842 * lpfc_unregister_vfi_cmpl - Completion handler for unreg vfi. 5843 * @phba: Pointer to hba context object. 5844 * @mboxq: Pointer to mailbox object. 5845 * 5846 * This function frees memory associated with the mailbox command. 5847 */ 5848 void 5849 lpfc_unregister_vfi_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq) 5850 { 5851 struct lpfc_vport *vport = mboxq->vport; 5852 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 5853 5854 if (mboxq->u.mb.mbxStatus) { 5855 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY|LOG_MBOX, 5856 "2555 UNREG_VFI mbxStatus error x%x " 5857 "HBA state x%x\n", 5858 mboxq->u.mb.mbxStatus, vport->port_state); 5859 } 5860 spin_lock_irq(shost->host_lock); 5861 phba->pport->fc_flag &= ~FC_VFI_REGISTERED; 5862 spin_unlock_irq(shost->host_lock); 5863 mempool_free(mboxq, phba->mbox_mem_pool); 5864 return; 5865 } 5866 5867 /** 5868 * lpfc_unregister_fcfi_cmpl - Completion handler for unreg fcfi. 5869 * @phba: Pointer to hba context object. 5870 * @mboxq: Pointer to mailbox object. 5871 * 5872 * This function frees memory associated with the mailbox command. 5873 */ 5874 static void 5875 lpfc_unregister_fcfi_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq) 5876 { 5877 struct lpfc_vport *vport = mboxq->vport; 5878 5879 if (mboxq->u.mb.mbxStatus) { 5880 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY|LOG_MBOX, 5881 "2550 UNREG_FCFI mbxStatus error x%x " 5882 "HBA state x%x\n", 5883 mboxq->u.mb.mbxStatus, vport->port_state); 5884 } 5885 mempool_free(mboxq, phba->mbox_mem_pool); 5886 return; 5887 } 5888 5889 /** 5890 * lpfc_unregister_fcf_prep - Unregister fcf record preparation 5891 * @phba: Pointer to hba context object. 5892 * 5893 * This function prepare the HBA for unregistering the currently registered 5894 * FCF from the HBA. It performs unregistering, in order, RPIs, VPIs, and 5895 * VFIs. 5896 */ 5897 int 5898 lpfc_unregister_fcf_prep(struct lpfc_hba *phba) 5899 { 5900 struct lpfc_vport **vports; 5901 struct lpfc_nodelist *ndlp; 5902 struct Scsi_Host *shost; 5903 int i = 0, rc; 5904 5905 /* Unregister RPIs */ 5906 if (lpfc_fcf_inuse(phba)) 5907 lpfc_unreg_hba_rpis(phba); 5908 5909 /* At this point, all discovery is aborted */ 5910 phba->pport->port_state = LPFC_VPORT_UNKNOWN; 5911 5912 /* Unregister VPIs */ 5913 vports = lpfc_create_vport_work_array(phba); 5914 if (vports && (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)) 5915 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) { 5916 /* Stop FLOGI/FDISC retries */ 5917 ndlp = lpfc_findnode_did(vports[i], Fabric_DID); 5918 if (ndlp) 5919 lpfc_cancel_retry_delay_tmo(vports[i], ndlp); 5920 lpfc_cleanup_pending_mbox(vports[i]); 5921 if (phba->sli_rev == LPFC_SLI_REV4) 5922 lpfc_sli4_unreg_all_rpis(vports[i]); 5923 lpfc_mbx_unreg_vpi(vports[i]); 5924 shost = lpfc_shost_from_vport(vports[i]); 5925 spin_lock_irq(shost->host_lock); 5926 vports[i]->fc_flag |= FC_VPORT_NEEDS_INIT_VPI; 5927 vports[i]->vpi_state &= ~LPFC_VPI_REGISTERED; 5928 spin_unlock_irq(shost->host_lock); 5929 } 5930 lpfc_destroy_vport_work_array(phba, vports); 5931 if (i == 0 && (!(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED))) { 5932 ndlp = lpfc_findnode_did(phba->pport, Fabric_DID); 5933 if (ndlp) 5934 lpfc_cancel_retry_delay_tmo(phba->pport, ndlp); 5935 lpfc_cleanup_pending_mbox(phba->pport); 5936 if (phba->sli_rev == LPFC_SLI_REV4) 5937 lpfc_sli4_unreg_all_rpis(phba->pport); 5938 lpfc_mbx_unreg_vpi(phba->pport); 5939 shost = lpfc_shost_from_vport(phba->pport); 5940 spin_lock_irq(shost->host_lock); 5941 phba->pport->fc_flag |= FC_VPORT_NEEDS_INIT_VPI; 5942 phba->pport->vpi_state &= ~LPFC_VPI_REGISTERED; 5943 spin_unlock_irq(shost->host_lock); 5944 } 5945 5946 /* Cleanup any outstanding ELS commands */ 5947 lpfc_els_flush_all_cmd(phba); 5948 5949 /* Unregister the physical port VFI */ 5950 rc = lpfc_issue_unreg_vfi(phba->pport); 5951 return rc; 5952 } 5953 5954 /** 5955 * lpfc_sli4_unregister_fcf - Unregister currently registered FCF record 5956 * @phba: Pointer to hba context object. 5957 * 5958 * This function issues synchronous unregister FCF mailbox command to HBA to 5959 * unregister the currently registered FCF record. The driver does not reset 5960 * the driver FCF usage state flags. 5961 * 5962 * Return 0 if successfully issued, none-zero otherwise. 5963 */ 5964 int 5965 lpfc_sli4_unregister_fcf(struct lpfc_hba *phba) 5966 { 5967 LPFC_MBOXQ_t *mbox; 5968 int rc; 5969 5970 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 5971 if (!mbox) { 5972 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY|LOG_MBOX, 5973 "2551 UNREG_FCFI mbox allocation failed" 5974 "HBA state x%x\n", phba->pport->port_state); 5975 return -ENOMEM; 5976 } 5977 lpfc_unreg_fcfi(mbox, phba->fcf.fcfi); 5978 mbox->vport = phba->pport; 5979 mbox->mbox_cmpl = lpfc_unregister_fcfi_cmpl; 5980 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT); 5981 5982 if (rc == MBX_NOT_FINISHED) { 5983 lpfc_printf_log(phba, KERN_ERR, LOG_SLI, 5984 "2552 Unregister FCFI command failed rc x%x " 5985 "HBA state x%x\n", 5986 rc, phba->pport->port_state); 5987 return -EINVAL; 5988 } 5989 return 0; 5990 } 5991 5992 /** 5993 * lpfc_unregister_fcf_rescan - Unregister currently registered fcf and rescan 5994 * @phba: Pointer to hba context object. 5995 * 5996 * This function unregisters the currently reigstered FCF. This function 5997 * also tries to find another FCF for discovery by rescan the HBA FCF table. 5998 */ 5999 void 6000 lpfc_unregister_fcf_rescan(struct lpfc_hba *phba) 6001 { 6002 int rc; 6003 6004 /* Preparation for unregistering fcf */ 6005 rc = lpfc_unregister_fcf_prep(phba); 6006 if (rc) { 6007 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY, 6008 "2748 Failed to prepare for unregistering " 6009 "HBA's FCF record: rc=%d\n", rc); 6010 return; 6011 } 6012 6013 /* Now, unregister FCF record and reset HBA FCF state */ 6014 rc = lpfc_sli4_unregister_fcf(phba); 6015 if (rc) 6016 return; 6017 /* Reset HBA FCF states after successful unregister FCF */ 6018 phba->fcf.fcf_flag = 0; 6019 phba->fcf.current_rec.flag = 0; 6020 6021 /* 6022 * If driver is not unloading, check if there is any other 6023 * FCF record that can be used for discovery. 6024 */ 6025 if ((phba->pport->load_flag & FC_UNLOADING) || 6026 (phba->link_state < LPFC_LINK_UP)) 6027 return; 6028 6029 /* This is considered as the initial FCF discovery scan */ 6030 spin_lock_irq(&phba->hbalock); 6031 phba->fcf.fcf_flag |= FCF_INIT_DISC; 6032 spin_unlock_irq(&phba->hbalock); 6033 6034 /* Reset FCF roundrobin bmask for new discovery */ 6035 lpfc_sli4_clear_fcf_rr_bmask(phba); 6036 6037 rc = lpfc_sli4_fcf_scan_read_fcf_rec(phba, LPFC_FCOE_FCF_GET_FIRST); 6038 6039 if (rc) { 6040 spin_lock_irq(&phba->hbalock); 6041 phba->fcf.fcf_flag &= ~FCF_INIT_DISC; 6042 spin_unlock_irq(&phba->hbalock); 6043 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY|LOG_MBOX, 6044 "2553 lpfc_unregister_unused_fcf failed " 6045 "to read FCF record HBA state x%x\n", 6046 phba->pport->port_state); 6047 } 6048 } 6049 6050 /** 6051 * lpfc_unregister_fcf - Unregister the currently registered fcf record 6052 * @phba: Pointer to hba context object. 6053 * 6054 * This function just unregisters the currently reigstered FCF. It does not 6055 * try to find another FCF for discovery. 6056 */ 6057 void 6058 lpfc_unregister_fcf(struct lpfc_hba *phba) 6059 { 6060 int rc; 6061 6062 /* Preparation for unregistering fcf */ 6063 rc = lpfc_unregister_fcf_prep(phba); 6064 if (rc) { 6065 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY, 6066 "2749 Failed to prepare for unregistering " 6067 "HBA's FCF record: rc=%d\n", rc); 6068 return; 6069 } 6070 6071 /* Now, unregister FCF record and reset HBA FCF state */ 6072 rc = lpfc_sli4_unregister_fcf(phba); 6073 if (rc) 6074 return; 6075 /* Set proper HBA FCF states after successful unregister FCF */ 6076 spin_lock_irq(&phba->hbalock); 6077 phba->fcf.fcf_flag &= ~FCF_REGISTERED; 6078 spin_unlock_irq(&phba->hbalock); 6079 } 6080 6081 /** 6082 * lpfc_unregister_unused_fcf - Unregister FCF if all devices are disconnected. 6083 * @phba: Pointer to hba context object. 6084 * 6085 * This function check if there are any connected remote port for the FCF and 6086 * if all the devices are disconnected, this function unregister FCFI. 6087 * This function also tries to use another FCF for discovery. 6088 */ 6089 void 6090 lpfc_unregister_unused_fcf(struct lpfc_hba *phba) 6091 { 6092 /* 6093 * If HBA is not running in FIP mode, if HBA does not support 6094 * FCoE, if FCF discovery is ongoing, or if FCF has not been 6095 * registered, do nothing. 6096 */ 6097 spin_lock_irq(&phba->hbalock); 6098 if (!(phba->hba_flag & HBA_FCOE_MODE) || 6099 !(phba->fcf.fcf_flag & FCF_REGISTERED) || 6100 !(phba->hba_flag & HBA_FIP_SUPPORT) || 6101 (phba->fcf.fcf_flag & FCF_DISCOVERY) || 6102 (phba->pport->port_state == LPFC_FLOGI)) { 6103 spin_unlock_irq(&phba->hbalock); 6104 return; 6105 } 6106 spin_unlock_irq(&phba->hbalock); 6107 6108 if (lpfc_fcf_inuse(phba)) 6109 return; 6110 6111 lpfc_unregister_fcf_rescan(phba); 6112 } 6113 6114 /** 6115 * lpfc_read_fcf_conn_tbl - Create driver FCF connection table. 6116 * @phba: Pointer to hba context object. 6117 * @buff: Buffer containing the FCF connection table as in the config 6118 * region. 6119 * This function create driver data structure for the FCF connection 6120 * record table read from config region 23. 6121 */ 6122 static void 6123 lpfc_read_fcf_conn_tbl(struct lpfc_hba *phba, 6124 uint8_t *buff) 6125 { 6126 struct lpfc_fcf_conn_entry *conn_entry, *next_conn_entry; 6127 struct lpfc_fcf_conn_hdr *conn_hdr; 6128 struct lpfc_fcf_conn_rec *conn_rec; 6129 uint32_t record_count; 6130 int i; 6131 6132 /* Free the current connect table */ 6133 list_for_each_entry_safe(conn_entry, next_conn_entry, 6134 &phba->fcf_conn_rec_list, list) { 6135 list_del_init(&conn_entry->list); 6136 kfree(conn_entry); 6137 } 6138 6139 conn_hdr = (struct lpfc_fcf_conn_hdr *) buff; 6140 record_count = conn_hdr->length * sizeof(uint32_t)/ 6141 sizeof(struct lpfc_fcf_conn_rec); 6142 6143 conn_rec = (struct lpfc_fcf_conn_rec *) 6144 (buff + sizeof(struct lpfc_fcf_conn_hdr)); 6145 6146 for (i = 0; i < record_count; i++) { 6147 if (!(conn_rec[i].flags & FCFCNCT_VALID)) 6148 continue; 6149 conn_entry = kzalloc(sizeof(struct lpfc_fcf_conn_entry), 6150 GFP_KERNEL); 6151 if (!conn_entry) { 6152 lpfc_printf_log(phba, KERN_ERR, LOG_INIT, 6153 "2566 Failed to allocate connection" 6154 " table entry\n"); 6155 return; 6156 } 6157 6158 memcpy(&conn_entry->conn_rec, &conn_rec[i], 6159 sizeof(struct lpfc_fcf_conn_rec)); 6160 conn_entry->conn_rec.vlan_tag = 6161 le16_to_cpu(conn_entry->conn_rec.vlan_tag) & 0xFFF; 6162 conn_entry->conn_rec.flags = 6163 le16_to_cpu(conn_entry->conn_rec.flags); 6164 list_add_tail(&conn_entry->list, 6165 &phba->fcf_conn_rec_list); 6166 } 6167 } 6168 6169 /** 6170 * lpfc_read_fcoe_param - Read FCoe parameters from conf region.. 6171 * @phba: Pointer to hba context object. 6172 * @buff: Buffer containing the FCoE parameter data structure. 6173 * 6174 * This function update driver data structure with config 6175 * parameters read from config region 23. 6176 */ 6177 static void 6178 lpfc_read_fcoe_param(struct lpfc_hba *phba, 6179 uint8_t *buff) 6180 { 6181 struct lpfc_fip_param_hdr *fcoe_param_hdr; 6182 struct lpfc_fcoe_params *fcoe_param; 6183 6184 fcoe_param_hdr = (struct lpfc_fip_param_hdr *) 6185 buff; 6186 fcoe_param = (struct lpfc_fcoe_params *) 6187 (buff + sizeof(struct lpfc_fip_param_hdr)); 6188 6189 if ((fcoe_param_hdr->parm_version != FIPP_VERSION) || 6190 (fcoe_param_hdr->length != FCOE_PARAM_LENGTH)) 6191 return; 6192 6193 if (fcoe_param_hdr->parm_flags & FIPP_VLAN_VALID) { 6194 phba->valid_vlan = 1; 6195 phba->vlan_id = le16_to_cpu(fcoe_param->vlan_tag) & 6196 0xFFF; 6197 } 6198 6199 phba->fc_map[0] = fcoe_param->fc_map[0]; 6200 phba->fc_map[1] = fcoe_param->fc_map[1]; 6201 phba->fc_map[2] = fcoe_param->fc_map[2]; 6202 return; 6203 } 6204 6205 /** 6206 * lpfc_get_rec_conf23 - Get a record type in config region data. 6207 * @buff: Buffer containing config region 23 data. 6208 * @size: Size of the data buffer. 6209 * @rec_type: Record type to be searched. 6210 * 6211 * This function searches config region data to find the beginning 6212 * of the record specified by record_type. If record found, this 6213 * function return pointer to the record else return NULL. 6214 */ 6215 static uint8_t * 6216 lpfc_get_rec_conf23(uint8_t *buff, uint32_t size, uint8_t rec_type) 6217 { 6218 uint32_t offset = 0, rec_length; 6219 6220 if ((buff[0] == LPFC_REGION23_LAST_REC) || 6221 (size < sizeof(uint32_t))) 6222 return NULL; 6223 6224 rec_length = buff[offset + 1]; 6225 6226 /* 6227 * One TLV record has one word header and number of data words 6228 * specified in the rec_length field of the record header. 6229 */ 6230 while ((offset + rec_length * sizeof(uint32_t) + sizeof(uint32_t)) 6231 <= size) { 6232 if (buff[offset] == rec_type) 6233 return &buff[offset]; 6234 6235 if (buff[offset] == LPFC_REGION23_LAST_REC) 6236 return NULL; 6237 6238 offset += rec_length * sizeof(uint32_t) + sizeof(uint32_t); 6239 rec_length = buff[offset + 1]; 6240 } 6241 return NULL; 6242 } 6243 6244 /** 6245 * lpfc_parse_fcoe_conf - Parse FCoE config data read from config region 23. 6246 * @phba: Pointer to lpfc_hba data structure. 6247 * @buff: Buffer containing config region 23 data. 6248 * @size: Size of the data buffer. 6249 * 6250 * This function parses the FCoE config parameters in config region 23 and 6251 * populate driver data structure with the parameters. 6252 */ 6253 void 6254 lpfc_parse_fcoe_conf(struct lpfc_hba *phba, 6255 uint8_t *buff, 6256 uint32_t size) 6257 { 6258 uint32_t offset = 0, rec_length; 6259 uint8_t *rec_ptr; 6260 6261 /* 6262 * If data size is less than 2 words signature and version cannot be 6263 * verified. 6264 */ 6265 if (size < 2*sizeof(uint32_t)) 6266 return; 6267 6268 /* Check the region signature first */ 6269 if (memcmp(buff, LPFC_REGION23_SIGNATURE, 4)) { 6270 lpfc_printf_log(phba, KERN_ERR, LOG_INIT, 6271 "2567 Config region 23 has bad signature\n"); 6272 return; 6273 } 6274 6275 offset += 4; 6276 6277 /* Check the data structure version */ 6278 if (buff[offset] != LPFC_REGION23_VERSION) { 6279 lpfc_printf_log(phba, KERN_ERR, LOG_INIT, 6280 "2568 Config region 23 has bad version\n"); 6281 return; 6282 } 6283 offset += 4; 6284 6285 rec_length = buff[offset + 1]; 6286 6287 /* Read FCoE param record */ 6288 rec_ptr = lpfc_get_rec_conf23(&buff[offset], 6289 size - offset, FCOE_PARAM_TYPE); 6290 if (rec_ptr) 6291 lpfc_read_fcoe_param(phba, rec_ptr); 6292 6293 /* Read FCF connection table */ 6294 rec_ptr = lpfc_get_rec_conf23(&buff[offset], 6295 size - offset, FCOE_CONN_TBL_TYPE); 6296 if (rec_ptr) 6297 lpfc_read_fcf_conn_tbl(phba, rec_ptr); 6298 6299 } 6300