1 /******************************************************************* 2 * This file is part of the Emulex Linux Device Driver for * 3 * Fibre Channel Host Bus Adapters. * 4 * Copyright (C) 2004-2009 Emulex. All rights reserved. * 5 * EMULEX and SLI are trademarks of Emulex. * 6 * www.emulex.com * 7 * Portions Copyright (C) 2004-2005 Christoph Hellwig * 8 * * 9 * This program is free software; you can redistribute it and/or * 10 * modify it under the terms of version 2 of the GNU General * 11 * Public License as published by the Free Software Foundation. * 12 * This program is distributed in the hope that it will be useful. * 13 * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND * 14 * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, * 15 * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE * 16 * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD * 17 * TO BE LEGALLY INVALID. See the GNU General Public License for * 18 * more details, a copy of which can be found in the file COPYING * 19 * included with this package. * 20 *******************************************************************/ 21 22#include <linux/blkdev.h> 23#include <linux/pci.h> 24#include <linux/slab.h> 25#include <linux/interrupt.h> 26 27#include <scsi/scsi.h> 28#include <scsi/scsi_device.h> 29#include <scsi/scsi_host.h> 30#include <scsi/scsi_transport_fc.h> 31 32#include "lpfc_hw4.h" 33#include "lpfc_hw.h" 34#include "lpfc_sli.h" 35#include "lpfc_sli4.h" 36#include "lpfc_nl.h" 37#include "lpfc_disc.h" 38#include "lpfc_scsi.h" 39#include "lpfc.h" 40#include "lpfc_logmsg.h" 41#include "lpfc_crtn.h" 42#include "lpfc_vport.h" 43#include "lpfc_debugfs.h" 44 45 46/* Called to verify a rcv'ed ADISC was intended for us. */ 47static int 48lpfc_check_adisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 49 struct lpfc_name *nn, struct lpfc_name *pn) 50{ 51 /* Compare the ADISC rsp WWNN / WWPN matches our internal node 52 * table entry for that node. 53 */ 54 if (memcmp(nn, &ndlp->nlp_nodename, sizeof (struct lpfc_name))) 55 return 0; 56 57 if (memcmp(pn, &ndlp->nlp_portname, sizeof (struct lpfc_name))) 58 return 0; 59 60 /* we match, return success */ 61 return 1; 62} 63 64int 65lpfc_check_sparm(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 66 struct serv_parm *sp, uint32_t class, int flogi) 67{ 68 volatile struct serv_parm *hsp = &vport->fc_sparam; 69 uint16_t hsp_value, ssp_value = 0; 70 71 /* 72 * The receive data field size and buffer-to-buffer receive data field 73 * size entries are 16 bits but are represented as two 8-bit fields in 74 * the driver data structure to account for rsvd bits and other control 75 * bits. Reconstruct and compare the fields as a 16-bit values before 76 * correcting the byte values. 77 */ 78 if (sp->cls1.classValid) { 79 if (!flogi) { 80 hsp_value = ((hsp->cls1.rcvDataSizeMsb << 8) | 81 hsp->cls1.rcvDataSizeLsb); 82 ssp_value = ((sp->cls1.rcvDataSizeMsb << 8) | 83 sp->cls1.rcvDataSizeLsb); 84 if (!ssp_value) 85 goto bad_service_param; 86 if (ssp_value > hsp_value) { 87 sp->cls1.rcvDataSizeLsb = 88 hsp->cls1.rcvDataSizeLsb; 89 sp->cls1.rcvDataSizeMsb = 90 hsp->cls1.rcvDataSizeMsb; 91 } 92 } 93 } else if (class == CLASS1) 94 goto bad_service_param; 95 if (sp->cls2.classValid) { 96 if (!flogi) { 97 hsp_value = ((hsp->cls2.rcvDataSizeMsb << 8) | 98 hsp->cls2.rcvDataSizeLsb); 99 ssp_value = ((sp->cls2.rcvDataSizeMsb << 8) | 100 sp->cls2.rcvDataSizeLsb); 101 if (!ssp_value) 102 goto bad_service_param; 103 if (ssp_value > hsp_value) { 104 sp->cls2.rcvDataSizeLsb = 105 hsp->cls2.rcvDataSizeLsb; 106 sp->cls2.rcvDataSizeMsb = 107 hsp->cls2.rcvDataSizeMsb; 108 } 109 } 110 } else if (class == CLASS2) 111 goto bad_service_param; 112 if (sp->cls3.classValid) { 113 if (!flogi) { 114 hsp_value = ((hsp->cls3.rcvDataSizeMsb << 8) | 115 hsp->cls3.rcvDataSizeLsb); 116 ssp_value = ((sp->cls3.rcvDataSizeMsb << 8) | 117 sp->cls3.rcvDataSizeLsb); 118 if (!ssp_value) 119 goto bad_service_param; 120 if (ssp_value > hsp_value) { 121 sp->cls3.rcvDataSizeLsb = 122 hsp->cls3.rcvDataSizeLsb; 123 sp->cls3.rcvDataSizeMsb = 124 hsp->cls3.rcvDataSizeMsb; 125 } 126 } 127 } else if (class == CLASS3) 128 goto bad_service_param; 129 130 /* 131 * Preserve the upper four bits of the MSB from the PLOGI response. 132 * These bits contain the Buffer-to-Buffer State Change Number 133 * from the target and need to be passed to the FW. 134 */ 135 hsp_value = (hsp->cmn.bbRcvSizeMsb << 8) | hsp->cmn.bbRcvSizeLsb; 136 ssp_value = (sp->cmn.bbRcvSizeMsb << 8) | sp->cmn.bbRcvSizeLsb; 137 if (ssp_value > hsp_value) { 138 sp->cmn.bbRcvSizeLsb = hsp->cmn.bbRcvSizeLsb; 139 sp->cmn.bbRcvSizeMsb = (sp->cmn.bbRcvSizeMsb & 0xF0) | 140 (hsp->cmn.bbRcvSizeMsb & 0x0F); 141 } 142 143 memcpy(&ndlp->nlp_nodename, &sp->nodeName, sizeof (struct lpfc_name)); 144 memcpy(&ndlp->nlp_portname, &sp->portName, sizeof (struct lpfc_name)); 145 return 1; 146bad_service_param: 147 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY, 148 "0207 Device %x " 149 "(%02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x) sent " 150 "invalid service parameters. Ignoring device.\n", 151 ndlp->nlp_DID, 152 sp->nodeName.u.wwn[0], sp->nodeName.u.wwn[1], 153 sp->nodeName.u.wwn[2], sp->nodeName.u.wwn[3], 154 sp->nodeName.u.wwn[4], sp->nodeName.u.wwn[5], 155 sp->nodeName.u.wwn[6], sp->nodeName.u.wwn[7]); 156 return 0; 157} 158 159static void * 160lpfc_check_elscmpl_iocb(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb, 161 struct lpfc_iocbq *rspiocb) 162{ 163 struct lpfc_dmabuf *pcmd, *prsp; 164 uint32_t *lp; 165 void *ptr = NULL; 166 IOCB_t *irsp; 167 168 irsp = &rspiocb->iocb; 169 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2; 170 171 /* For lpfc_els_abort, context2 could be zero'ed to delay 172 * freeing associated memory till after ABTS completes. 173 */ 174 if (pcmd) { 175 prsp = list_get_first(&pcmd->list, struct lpfc_dmabuf, 176 list); 177 if (prsp) { 178 lp = (uint32_t *) prsp->virt; 179 ptr = (void *)((uint8_t *)lp + sizeof(uint32_t)); 180 } 181 } else { 182 /* Force ulpStatus error since we are returning NULL ptr */ 183 if (!(irsp->ulpStatus)) { 184 irsp->ulpStatus = IOSTAT_LOCAL_REJECT; 185 irsp->un.ulpWord[4] = IOERR_SLI_ABORTED; 186 } 187 ptr = NULL; 188 } 189 return ptr; 190} 191 192 193 194/* 195 * Free resources / clean up outstanding I/Os 196 * associated with a LPFC_NODELIST entry. This 197 * routine effectively results in a "software abort". 198 */ 199int 200lpfc_els_abort(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp) 201{ 202 LIST_HEAD(completions); 203 LIST_HEAD(txcmplq_completions); 204 LIST_HEAD(abort_list); 205 struct lpfc_sli *psli = &phba->sli; 206 struct lpfc_sli_ring *pring = &psli->ring[LPFC_ELS_RING]; 207 struct lpfc_iocbq *iocb, *next_iocb; 208 209 /* Abort outstanding I/O on NPort <nlp_DID> */ 210 lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_DISCOVERY, 211 "2819 Abort outstanding I/O on NPort x%x " 212 "Data: x%x x%x x%x\n", 213 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state, 214 ndlp->nlp_rpi); 215 216 lpfc_fabric_abort_nport(ndlp); 217 218 /* First check the txq */ 219 spin_lock_irq(&phba->hbalock); 220 list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) { 221 /* Check to see if iocb matches the nport we are looking for */ 222 if (lpfc_check_sli_ndlp(phba, pring, iocb, ndlp)) { 223 /* It matches, so deque and call compl with anp error */ 224 list_move_tail(&iocb->list, &completions); 225 pring->txq_cnt--; 226 } 227 } 228 229 /* Next check the txcmplq */ 230 list_splice_init(&pring->txcmplq, &txcmplq_completions); 231 spin_unlock_irq(&phba->hbalock); 232 233 list_for_each_entry_safe(iocb, next_iocb, &txcmplq_completions, list) { 234 /* Check to see if iocb matches the nport we are looking for */ 235 if (lpfc_check_sli_ndlp(phba, pring, iocb, ndlp)) 236 list_add_tail(&iocb->dlist, &abort_list); 237 } 238 spin_lock_irq(&phba->hbalock); 239 list_splice(&txcmplq_completions, &pring->txcmplq); 240 spin_unlock_irq(&phba->hbalock); 241 242 list_for_each_entry_safe(iocb, next_iocb, &abort_list, dlist) { 243 spin_lock_irq(&phba->hbalock); 244 list_del_init(&iocb->dlist); 245 lpfc_sli_issue_abort_iotag(phba, pring, iocb); 246 spin_unlock_irq(&phba->hbalock); 247 } 248 249 /* Cancel all the IOCBs from the completions list */ 250 lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT, 251 IOERR_SLI_ABORTED); 252 253 lpfc_cancel_retry_delay_tmo(phba->pport, ndlp); 254 return 0; 255} 256 257static int 258lpfc_rcv_plogi(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 259 struct lpfc_iocbq *cmdiocb) 260{ 261 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 262 struct lpfc_hba *phba = vport->phba; 263 struct lpfc_dmabuf *pcmd; 264 uint32_t *lp; 265 IOCB_t *icmd; 266 struct serv_parm *sp; 267 LPFC_MBOXQ_t *mbox; 268 struct ls_rjt stat; 269 int rc; 270 271 memset(&stat, 0, sizeof (struct ls_rjt)); 272 if (vport->port_state <= LPFC_FDISC) { 273 /* Before responding to PLOGI, check for pt2pt mode. 274 * If we are pt2pt, with an outstanding FLOGI, abort 275 * the FLOGI and resend it first. 276 */ 277 if (vport->fc_flag & FC_PT2PT) { 278 lpfc_els_abort_flogi(phba); 279 if (!(vport->fc_flag & FC_PT2PT_PLOGI)) { 280 /* If the other side is supposed to initiate 281 * the PLOGI anyway, just ACC it now and 282 * move on with discovery. 283 */ 284 phba->fc_edtov = FF_DEF_EDTOV; 285 phba->fc_ratov = FF_DEF_RATOV; 286 /* Start discovery - this should just do 287 CLEAR_LA */ 288 lpfc_disc_start(vport); 289 } else 290 lpfc_initial_flogi(vport); 291 } else { 292 stat.un.b.lsRjtRsnCode = LSRJT_LOGICAL_BSY; 293 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE; 294 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, 295 ndlp, NULL); 296 return 0; 297 } 298 } 299 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2; 300 lp = (uint32_t *) pcmd->virt; 301 sp = (struct serv_parm *) ((uint8_t *) lp + sizeof (uint32_t)); 302 if (wwn_to_u64(sp->portName.u.wwn) == 0) { 303 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS, 304 "0140 PLOGI Reject: invalid nname\n"); 305 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC; 306 stat.un.b.lsRjtRsnCodeExp = LSEXP_INVALID_PNAME; 307 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, 308 NULL); 309 return 0; 310 } 311 if (wwn_to_u64(sp->nodeName.u.wwn) == 0) { 312 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS, 313 "0141 PLOGI Reject: invalid pname\n"); 314 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC; 315 stat.un.b.lsRjtRsnCodeExp = LSEXP_INVALID_NNAME; 316 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, 317 NULL); 318 return 0; 319 } 320 if ((lpfc_check_sparm(vport, ndlp, sp, CLASS3, 0) == 0)) { 321 /* Reject this request because invalid parameters */ 322 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC; 323 stat.un.b.lsRjtRsnCodeExp = LSEXP_SPARM_OPTIONS; 324 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, 325 NULL); 326 return 0; 327 } 328 icmd = &cmdiocb->iocb; 329 330 /* PLOGI chkparm OK */ 331 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, 332 "0114 PLOGI chkparm OK Data: x%x x%x x%x x%x\n", 333 ndlp->nlp_DID, ndlp->nlp_state, ndlp->nlp_flag, 334 ndlp->nlp_rpi); 335 336 if (vport->cfg_fcp_class == 2 && sp->cls2.classValid) 337 ndlp->nlp_fcp_info |= CLASS2; 338 else 339 ndlp->nlp_fcp_info |= CLASS3; 340 341 ndlp->nlp_class_sup = 0; 342 if (sp->cls1.classValid) 343 ndlp->nlp_class_sup |= FC_COS_CLASS1; 344 if (sp->cls2.classValid) 345 ndlp->nlp_class_sup |= FC_COS_CLASS2; 346 if (sp->cls3.classValid) 347 ndlp->nlp_class_sup |= FC_COS_CLASS3; 348 if (sp->cls4.classValid) 349 ndlp->nlp_class_sup |= FC_COS_CLASS4; 350 ndlp->nlp_maxframe = 351 ((sp->cmn.bbRcvSizeMsb & 0x0F) << 8) | sp->cmn.bbRcvSizeLsb; 352 353 /* no need to reg_login if we are already in one of these states */ 354 switch (ndlp->nlp_state) { 355 case NLP_STE_NPR_NODE: 356 if (!(ndlp->nlp_flag & NLP_NPR_ADISC)) 357 break; 358 case NLP_STE_REG_LOGIN_ISSUE: 359 case NLP_STE_PRLI_ISSUE: 360 case NLP_STE_UNMAPPED_NODE: 361 case NLP_STE_MAPPED_NODE: 362 lpfc_els_rsp_acc(vport, ELS_CMD_PLOGI, cmdiocb, ndlp, NULL); 363 return 1; 364 } 365 366 if ((vport->fc_flag & FC_PT2PT) && 367 !(vport->fc_flag & FC_PT2PT_PLOGI)) { 368 /* rcv'ed PLOGI decides what our NPortId will be */ 369 vport->fc_myDID = icmd->un.rcvels.parmRo; 370 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 371 if (mbox == NULL) 372 goto out; 373 lpfc_config_link(phba, mbox); 374 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl; 375 mbox->vport = vport; 376 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT); 377 if (rc == MBX_NOT_FINISHED) { 378 mempool_free(mbox, phba->mbox_mem_pool); 379 goto out; 380 } 381 382 lpfc_can_disctmo(vport); 383 } 384 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 385 if (!mbox) 386 goto out; 387 388 rc = lpfc_reg_rpi(phba, vport->vpi, icmd->un.rcvels.remoteID, 389 (uint8_t *) sp, mbox, 0); 390 if (rc) { 391 mempool_free(mbox, phba->mbox_mem_pool); 392 goto out; 393 } 394 395 /* ACC PLOGI rsp command needs to execute first, 396 * queue this mbox command to be processed later. 397 */ 398 mbox->mbox_cmpl = lpfc_mbx_cmpl_reg_login; 399 /* 400 * mbox->context2 = lpfc_nlp_get(ndlp) deferred until mailbox 401 * command issued in lpfc_cmpl_els_acc(). 402 */ 403 mbox->vport = vport; 404 spin_lock_irq(shost->host_lock); 405 ndlp->nlp_flag |= (NLP_ACC_REGLOGIN | NLP_RCV_PLOGI); 406 spin_unlock_irq(shost->host_lock); 407 408 /* 409 * If there is an outstanding PLOGI issued, abort it before 410 * sending ACC rsp for received PLOGI. If pending plogi 411 * is not canceled here, the plogi will be rejected by 412 * remote port and will be retried. On a configuration with 413 * single discovery thread, this will cause a huge delay in 414 * discovery. Also this will cause multiple state machines 415 * running in parallel for this node. 416 */ 417 if (ndlp->nlp_state == NLP_STE_PLOGI_ISSUE) { 418 /* software abort outstanding PLOGI */ 419 lpfc_els_abort(phba, ndlp); 420 } 421 422 if ((vport->port_type == LPFC_NPIV_PORT && 423 vport->cfg_restrict_login)) { 424 425 /* In order to preserve RPIs, we want to cleanup 426 * the default RPI the firmware created to rcv 427 * this ELS request. The only way to do this is 428 * to register, then unregister the RPI. 429 */ 430 spin_lock_irq(shost->host_lock); 431 ndlp->nlp_flag |= NLP_RM_DFLT_RPI; 432 spin_unlock_irq(shost->host_lock); 433 stat.un.b.lsRjtRsnCode = LSRJT_INVALID_CMD; 434 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE; 435 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, 436 ndlp, mbox); 437 return 1; 438 } 439 lpfc_els_rsp_acc(vport, ELS_CMD_PLOGI, cmdiocb, ndlp, mbox); 440 return 1; 441out: 442 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC; 443 stat.un.b.lsRjtRsnCodeExp = LSEXP_OUT_OF_RESOURCE; 444 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL); 445 return 0; 446} 447 448static int 449lpfc_rcv_padisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 450 struct lpfc_iocbq *cmdiocb) 451{ 452 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 453 struct lpfc_dmabuf *pcmd; 454 struct serv_parm *sp; 455 struct lpfc_name *pnn, *ppn; 456 struct ls_rjt stat; 457 ADISC *ap; 458 IOCB_t *icmd; 459 uint32_t *lp; 460 uint32_t cmd; 461 462 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2; 463 lp = (uint32_t *) pcmd->virt; 464 465 cmd = *lp++; 466 if (cmd == ELS_CMD_ADISC) { 467 ap = (ADISC *) lp; 468 pnn = (struct lpfc_name *) & ap->nodeName; 469 ppn = (struct lpfc_name *) & ap->portName; 470 } else { 471 sp = (struct serv_parm *) lp; 472 pnn = (struct lpfc_name *) & sp->nodeName; 473 ppn = (struct lpfc_name *) & sp->portName; 474 } 475 476 icmd = &cmdiocb->iocb; 477 if (icmd->ulpStatus == 0 && lpfc_check_adisc(vport, ndlp, pnn, ppn)) { 478 if (cmd == ELS_CMD_ADISC) { 479 lpfc_els_rsp_adisc_acc(vport, cmdiocb, ndlp); 480 } else { 481 lpfc_els_rsp_acc(vport, ELS_CMD_PLOGI, cmdiocb, ndlp, 482 NULL); 483 } 484 return 1; 485 } 486 /* Reject this request because invalid parameters */ 487 stat.un.b.lsRjtRsvd0 = 0; 488 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC; 489 stat.un.b.lsRjtRsnCodeExp = LSEXP_SPARM_OPTIONS; 490 stat.un.b.vendorUnique = 0; 491 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL); 492 493 /* 1 sec timeout */ 494 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ); 495 496 spin_lock_irq(shost->host_lock); 497 ndlp->nlp_flag |= NLP_DELAY_TMO; 498 spin_unlock_irq(shost->host_lock); 499 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI; 500 ndlp->nlp_prev_state = ndlp->nlp_state; 501 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE); 502 return 0; 503} 504 505static int 506lpfc_rcv_logo(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 507 struct lpfc_iocbq *cmdiocb, uint32_t els_cmd) 508{ 509 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 510 struct lpfc_hba *phba = vport->phba; 511 struct lpfc_vport **vports; 512 int i, active_vlink_present = 0 ; 513 514 /* Put ndlp in NPR state with 1 sec timeout for plogi, ACC logo */ 515 /* Only call LOGO ACC for first LOGO, this avoids sending unnecessary 516 * PLOGIs during LOGO storms from a device. 517 */ 518 spin_lock_irq(shost->host_lock); 519 ndlp->nlp_flag |= NLP_LOGO_ACC; 520 spin_unlock_irq(shost->host_lock); 521 if (els_cmd == ELS_CMD_PRLO) 522 lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL); 523 else 524 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL); 525 if (ndlp->nlp_DID == Fabric_DID) { 526 if (vport->port_state <= LPFC_FDISC) 527 goto out; 528 lpfc_linkdown_port(vport); 529 spin_lock_irq(shost->host_lock); 530 vport->fc_flag |= FC_VPORT_LOGO_RCVD; 531 spin_unlock_irq(shost->host_lock); 532 vports = lpfc_create_vport_work_array(phba); 533 if (vports) { 534 for (i = 0; i <= phba->max_vports && vports[i] != NULL; 535 i++) { 536 if ((!(vports[i]->fc_flag & 537 FC_VPORT_LOGO_RCVD)) && 538 (vports[i]->port_state > LPFC_FDISC)) { 539 active_vlink_present = 1; 540 break; 541 } 542 } 543 lpfc_destroy_vport_work_array(phba, vports); 544 } 545 546 if (active_vlink_present) { 547 /* 548 * If there are other active VLinks present, 549 * re-instantiate the Vlink using FDISC. 550 */ 551 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ); 552 spin_lock_irq(shost->host_lock); 553 ndlp->nlp_flag |= NLP_DELAY_TMO; 554 spin_unlock_irq(shost->host_lock); 555 ndlp->nlp_last_elscmd = ELS_CMD_FDISC; 556 vport->port_state = LPFC_FDISC; 557 } else { 558 spin_lock_irq(shost->host_lock); 559 phba->pport->fc_flag &= ~FC_LOGO_RCVD_DID_CHNG; 560 spin_unlock_irq(shost->host_lock); 561 lpfc_retry_pport_discovery(phba); 562 } 563 } else if ((!(ndlp->nlp_type & NLP_FABRIC) && 564 ((ndlp->nlp_type & NLP_FCP_TARGET) || 565 !(ndlp->nlp_type & NLP_FCP_INITIATOR))) || 566 (ndlp->nlp_state == NLP_STE_ADISC_ISSUE)) { 567 /* Only try to re-login if this is NOT a Fabric Node */ 568 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ * 1); 569 spin_lock_irq(shost->host_lock); 570 ndlp->nlp_flag |= NLP_DELAY_TMO; 571 spin_unlock_irq(shost->host_lock); 572 573 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI; 574 } 575out: 576 ndlp->nlp_prev_state = ndlp->nlp_state; 577 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE); 578 579 spin_lock_irq(shost->host_lock); 580 ndlp->nlp_flag &= ~NLP_NPR_ADISC; 581 spin_unlock_irq(shost->host_lock); 582 /* The driver has to wait until the ACC completes before it continues 583 * processing the LOGO. The action will resume in 584 * lpfc_cmpl_els_logo_acc routine. Since part of processing includes an 585 * unreg_login, the driver waits so the ACC does not get aborted. 586 */ 587 return 0; 588} 589 590static void 591lpfc_rcv_prli(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 592 struct lpfc_iocbq *cmdiocb) 593{ 594 struct lpfc_dmabuf *pcmd; 595 uint32_t *lp; 596 PRLI *npr; 597 struct fc_rport *rport = ndlp->rport; 598 u32 roles; 599 600 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2; 601 lp = (uint32_t *) pcmd->virt; 602 npr = (PRLI *) ((uint8_t *) lp + sizeof (uint32_t)); 603 604 ndlp->nlp_type &= ~(NLP_FCP_TARGET | NLP_FCP_INITIATOR); 605 ndlp->nlp_fcp_info &= ~NLP_FCP_2_DEVICE; 606 if (npr->prliType == PRLI_FCP_TYPE) { 607 if (npr->initiatorFunc) 608 ndlp->nlp_type |= NLP_FCP_INITIATOR; 609 if (npr->targetFunc) 610 ndlp->nlp_type |= NLP_FCP_TARGET; 611 if (npr->Retry) 612 ndlp->nlp_fcp_info |= NLP_FCP_2_DEVICE; 613 } 614 if (rport) { 615 /* We need to update the rport role values */ 616 roles = FC_RPORT_ROLE_UNKNOWN; 617 if (ndlp->nlp_type & NLP_FCP_INITIATOR) 618 roles |= FC_RPORT_ROLE_FCP_INITIATOR; 619 if (ndlp->nlp_type & NLP_FCP_TARGET) 620 roles |= FC_RPORT_ROLE_FCP_TARGET; 621 622 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT, 623 "rport rolechg: role:x%x did:x%x flg:x%x", 624 roles, ndlp->nlp_DID, ndlp->nlp_flag); 625 626 fc_remote_port_rolechg(rport, roles); 627 } 628} 629 630static uint32_t 631lpfc_disc_set_adisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) 632{ 633 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 634 635 if (!(ndlp->nlp_flag & NLP_RPI_VALID)) { 636 ndlp->nlp_flag &= ~NLP_NPR_ADISC; 637 return 0; 638 } 639 640 if (!(vport->fc_flag & FC_PT2PT)) { 641 /* Check config parameter use-adisc or FCP-2 */ 642 if ((vport->cfg_use_adisc && (vport->fc_flag & FC_RSCN_MODE)) || 643 ((ndlp->nlp_fcp_info & NLP_FCP_2_DEVICE) && 644 (ndlp->nlp_type & NLP_FCP_TARGET))) { 645 spin_lock_irq(shost->host_lock); 646 ndlp->nlp_flag |= NLP_NPR_ADISC; 647 spin_unlock_irq(shost->host_lock); 648 return 1; 649 } 650 } 651 ndlp->nlp_flag &= ~NLP_NPR_ADISC; 652 lpfc_unreg_rpi(vport, ndlp); 653 return 0; 654} 655/** 656 * lpfc_release_rpi - Release a RPI by issueing unreg_login mailbox cmd. 657 * @phba : Pointer to lpfc_hba structure. 658 * @vport: Pointer to lpfc_vport structure. 659 * @rpi : rpi to be release. 660 * 661 * This function will send a unreg_login mailbox command to the firmware 662 * to release a rpi. 663 **/ 664void 665lpfc_release_rpi(struct lpfc_hba *phba, 666 struct lpfc_vport *vport, 667 uint16_t rpi) 668{ 669 LPFC_MBOXQ_t *pmb; 670 int rc; 671 672 pmb = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool, 673 GFP_KERNEL); 674 if (!pmb) 675 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX, 676 "2796 mailbox memory allocation failed \n"); 677 else { 678 lpfc_unreg_login(phba, vport->vpi, rpi, pmb); 679 pmb->mbox_cmpl = lpfc_sli_def_mbox_cmpl; 680 rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT); 681 if (rc == MBX_NOT_FINISHED) 682 mempool_free(pmb, phba->mbox_mem_pool); 683 } 684} 685 686static uint32_t 687lpfc_disc_illegal(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 688 void *arg, uint32_t evt) 689{ 690 struct lpfc_hba *phba; 691 LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg; 692 MAILBOX_t *mb; 693 uint16_t rpi; 694 695 phba = vport->phba; 696 /* Release the RPI if reglogin completing */ 697 if (!(phba->pport->load_flag & FC_UNLOADING) && 698 (evt == NLP_EVT_CMPL_REG_LOGIN) && 699 (!pmb->u.mb.mbxStatus)) { 700 mb = &pmb->u.mb; 701 rpi = pmb->u.mb.un.varWords[0]; 702 lpfc_release_rpi(phba, vport, rpi); 703 } 704 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY, 705 "0271 Illegal State Transition: node x%x " 706 "event x%x, state x%x Data: x%x x%x\n", 707 ndlp->nlp_DID, evt, ndlp->nlp_state, ndlp->nlp_rpi, 708 ndlp->nlp_flag); 709 return ndlp->nlp_state; 710} 711 712static uint32_t 713lpfc_cmpl_plogi_illegal(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 714 void *arg, uint32_t evt) 715{ 716 /* This transition is only legal if we previously 717 * rcv'ed a PLOGI. Since we don't want 2 discovery threads 718 * working on the same NPortID, do nothing for this thread 719 * to stop it. 720 */ 721 if (!(ndlp->nlp_flag & NLP_RCV_PLOGI)) { 722 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY, 723 "0272 Illegal State Transition: node x%x " 724 "event x%x, state x%x Data: x%x x%x\n", 725 ndlp->nlp_DID, evt, ndlp->nlp_state, ndlp->nlp_rpi, 726 ndlp->nlp_flag); 727 } 728 return ndlp->nlp_state; 729} 730 731/* Start of Discovery State Machine routines */ 732 733static uint32_t 734lpfc_rcv_plogi_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 735 void *arg, uint32_t evt) 736{ 737 struct lpfc_iocbq *cmdiocb; 738 739 cmdiocb = (struct lpfc_iocbq *) arg; 740 741 if (lpfc_rcv_plogi(vport, ndlp, cmdiocb)) { 742 return ndlp->nlp_state; 743 } 744 return NLP_STE_FREED_NODE; 745} 746 747static uint32_t 748lpfc_rcv_els_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 749 void *arg, uint32_t evt) 750{ 751 lpfc_issue_els_logo(vport, ndlp, 0); 752 return ndlp->nlp_state; 753} 754 755static uint32_t 756lpfc_rcv_logo_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 757 void *arg, uint32_t evt) 758{ 759 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 760 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg; 761 762 spin_lock_irq(shost->host_lock); 763 ndlp->nlp_flag |= NLP_LOGO_ACC; 764 spin_unlock_irq(shost->host_lock); 765 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL); 766 767 return ndlp->nlp_state; 768} 769 770static uint32_t 771lpfc_cmpl_logo_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 772 void *arg, uint32_t evt) 773{ 774 return NLP_STE_FREED_NODE; 775} 776 777static uint32_t 778lpfc_device_rm_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 779 void *arg, uint32_t evt) 780{ 781 return NLP_STE_FREED_NODE; 782} 783 784static uint32_t 785lpfc_rcv_plogi_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 786 void *arg, uint32_t evt) 787{ 788 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 789 struct lpfc_hba *phba = vport->phba; 790 struct lpfc_iocbq *cmdiocb = arg; 791 struct lpfc_dmabuf *pcmd = (struct lpfc_dmabuf *) cmdiocb->context2; 792 uint32_t *lp = (uint32_t *) pcmd->virt; 793 struct serv_parm *sp = (struct serv_parm *) (lp + 1); 794 struct ls_rjt stat; 795 int port_cmp; 796 797 memset(&stat, 0, sizeof (struct ls_rjt)); 798 799 /* For a PLOGI, we only accept if our portname is less 800 * than the remote portname. 801 */ 802 phba->fc_stat.elsLogiCol++; 803 port_cmp = memcmp(&vport->fc_portname, &sp->portName, 804 sizeof(struct lpfc_name)); 805 806 if (port_cmp >= 0) { 807 /* Reject this request because the remote node will accept 808 ours */ 809 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC; 810 stat.un.b.lsRjtRsnCodeExp = LSEXP_CMD_IN_PROGRESS; 811 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, 812 NULL); 813 } else { 814 if (lpfc_rcv_plogi(vport, ndlp, cmdiocb) && 815 (ndlp->nlp_flag & NLP_NPR_2B_DISC) && 816 (vport->num_disc_nodes)) { 817 spin_lock_irq(shost->host_lock); 818 ndlp->nlp_flag &= ~NLP_NPR_2B_DISC; 819 spin_unlock_irq(shost->host_lock); 820 /* Check if there are more PLOGIs to be sent */ 821 lpfc_more_plogi(vport); 822 if (vport->num_disc_nodes == 0) { 823 spin_lock_irq(shost->host_lock); 824 vport->fc_flag &= ~FC_NDISC_ACTIVE; 825 spin_unlock_irq(shost->host_lock); 826 lpfc_can_disctmo(vport); 827 lpfc_end_rscn(vport); 828 } 829 } 830 } /* If our portname was less */ 831 832 return ndlp->nlp_state; 833} 834 835static uint32_t 836lpfc_rcv_prli_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 837 void *arg, uint32_t evt) 838{ 839 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg; 840 struct ls_rjt stat; 841 842 memset(&stat, 0, sizeof (struct ls_rjt)); 843 stat.un.b.lsRjtRsnCode = LSRJT_LOGICAL_BSY; 844 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE; 845 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL); 846 return ndlp->nlp_state; 847} 848 849static uint32_t 850lpfc_rcv_logo_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 851 void *arg, uint32_t evt) 852{ 853 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg; 854 855 /* software abort outstanding PLOGI */ 856 lpfc_els_abort(vport->phba, ndlp); 857 858 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO); 859 return ndlp->nlp_state; 860} 861 862static uint32_t 863lpfc_rcv_els_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 864 void *arg, uint32_t evt) 865{ 866 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 867 struct lpfc_hba *phba = vport->phba; 868 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg; 869 870 /* software abort outstanding PLOGI */ 871 lpfc_els_abort(phba, ndlp); 872 873 if (evt == NLP_EVT_RCV_LOGO) { 874 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL); 875 } else { 876 lpfc_issue_els_logo(vport, ndlp, 0); 877 } 878 879 /* Put ndlp in npr state set plogi timer for 1 sec */ 880 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ * 1); 881 spin_lock_irq(shost->host_lock); 882 ndlp->nlp_flag |= NLP_DELAY_TMO; 883 spin_unlock_irq(shost->host_lock); 884 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI; 885 ndlp->nlp_prev_state = NLP_STE_PLOGI_ISSUE; 886 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE); 887 888 return ndlp->nlp_state; 889} 890 891static uint32_t 892lpfc_cmpl_plogi_plogi_issue(struct lpfc_vport *vport, 893 struct lpfc_nodelist *ndlp, 894 void *arg, 895 uint32_t evt) 896{ 897 struct lpfc_hba *phba = vport->phba; 898 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 899 struct lpfc_iocbq *cmdiocb, *rspiocb; 900 struct lpfc_dmabuf *pcmd, *prsp, *mp; 901 uint32_t *lp; 902 IOCB_t *irsp; 903 struct serv_parm *sp; 904 LPFC_MBOXQ_t *mbox; 905 906 cmdiocb = (struct lpfc_iocbq *) arg; 907 rspiocb = cmdiocb->context_un.rsp_iocb; 908 909 if (ndlp->nlp_flag & NLP_ACC_REGLOGIN) { 910 /* Recovery from PLOGI collision logic */ 911 return ndlp->nlp_state; 912 } 913 914 irsp = &rspiocb->iocb; 915 916 if (irsp->ulpStatus) 917 goto out; 918 919 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2; 920 921 prsp = list_get_first(&pcmd->list, struct lpfc_dmabuf, list); 922 923 lp = (uint32_t *) prsp->virt; 924 sp = (struct serv_parm *) ((uint8_t *) lp + sizeof (uint32_t)); 925 926 /* Some switches have FDMI servers returning 0 for WWN */ 927 if ((ndlp->nlp_DID != FDMI_DID) && 928 (wwn_to_u64(sp->portName.u.wwn) == 0 || 929 wwn_to_u64(sp->nodeName.u.wwn) == 0)) { 930 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS, 931 "0142 PLOGI RSP: Invalid WWN.\n"); 932 goto out; 933 } 934 if (!lpfc_check_sparm(vport, ndlp, sp, CLASS3, 0)) 935 goto out; 936 /* PLOGI chkparm OK */ 937 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, 938 "0121 PLOGI chkparm OK Data: x%x x%x x%x x%x\n", 939 ndlp->nlp_DID, ndlp->nlp_state, 940 ndlp->nlp_flag, ndlp->nlp_rpi); 941 if (vport->cfg_fcp_class == 2 && (sp->cls2.classValid)) 942 ndlp->nlp_fcp_info |= CLASS2; 943 else 944 ndlp->nlp_fcp_info |= CLASS3; 945 946 ndlp->nlp_class_sup = 0; 947 if (sp->cls1.classValid) 948 ndlp->nlp_class_sup |= FC_COS_CLASS1; 949 if (sp->cls2.classValid) 950 ndlp->nlp_class_sup |= FC_COS_CLASS2; 951 if (sp->cls3.classValid) 952 ndlp->nlp_class_sup |= FC_COS_CLASS3; 953 if (sp->cls4.classValid) 954 ndlp->nlp_class_sup |= FC_COS_CLASS4; 955 ndlp->nlp_maxframe = 956 ((sp->cmn.bbRcvSizeMsb & 0x0F) << 8) | sp->cmn.bbRcvSizeLsb; 957 958 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 959 if (!mbox) { 960 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS, 961 "0133 PLOGI: no memory for reg_login " 962 "Data: x%x x%x x%x x%x\n", 963 ndlp->nlp_DID, ndlp->nlp_state, 964 ndlp->nlp_flag, ndlp->nlp_rpi); 965 goto out; 966 } 967 968 lpfc_unreg_rpi(vport, ndlp); 969 970 if (lpfc_reg_rpi(phba, vport->vpi, irsp->un.elsreq64.remoteID, 971 (uint8_t *) sp, mbox, 0) == 0) { 972 switch (ndlp->nlp_DID) { 973 case NameServer_DID: 974 mbox->mbox_cmpl = lpfc_mbx_cmpl_ns_reg_login; 975 break; 976 case FDMI_DID: 977 mbox->mbox_cmpl = lpfc_mbx_cmpl_fdmi_reg_login; 978 break; 979 default: 980 ndlp->nlp_flag |= NLP_REG_LOGIN_SEND; 981 mbox->mbox_cmpl = lpfc_mbx_cmpl_reg_login; 982 } 983 mbox->context2 = lpfc_nlp_get(ndlp); 984 mbox->vport = vport; 985 if (lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT) 986 != MBX_NOT_FINISHED) { 987 lpfc_nlp_set_state(vport, ndlp, 988 NLP_STE_REG_LOGIN_ISSUE); 989 return ndlp->nlp_state; 990 } 991 if (ndlp->nlp_flag & NLP_REG_LOGIN_SEND) 992 ndlp->nlp_flag &= ~NLP_REG_LOGIN_SEND; 993 /* decrement node reference count to the failed mbox 994 * command 995 */ 996 lpfc_nlp_put(ndlp); 997 mp = (struct lpfc_dmabuf *) mbox->context1; 998 lpfc_mbuf_free(phba, mp->virt, mp->phys); 999 kfree(mp); 1000 mempool_free(mbox, phba->mbox_mem_pool); 1001 1002 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS, 1003 "0134 PLOGI: cannot issue reg_login " 1004 "Data: x%x x%x x%x x%x\n", 1005 ndlp->nlp_DID, ndlp->nlp_state, 1006 ndlp->nlp_flag, ndlp->nlp_rpi); 1007 } else { 1008 mempool_free(mbox, phba->mbox_mem_pool); 1009 1010 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS, 1011 "0135 PLOGI: cannot format reg_login " 1012 "Data: x%x x%x x%x x%x\n", 1013 ndlp->nlp_DID, ndlp->nlp_state, 1014 ndlp->nlp_flag, ndlp->nlp_rpi); 1015 } 1016 1017 1018out: 1019 if (ndlp->nlp_DID == NameServer_DID) { 1020 lpfc_vport_set_state(vport, FC_VPORT_FAILED); 1021 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS, 1022 "0261 Cannot Register NameServer login\n"); 1023 } 1024 1025 spin_lock_irq(shost->host_lock); 1026 ndlp->nlp_flag |= NLP_DEFER_RM; 1027 spin_unlock_irq(shost->host_lock); 1028 return NLP_STE_FREED_NODE; 1029} 1030 1031static uint32_t 1032lpfc_cmpl_logo_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 1033 void *arg, uint32_t evt) 1034{ 1035 return ndlp->nlp_state; 1036} 1037 1038static uint32_t 1039lpfc_cmpl_reglogin_plogi_issue(struct lpfc_vport *vport, 1040 struct lpfc_nodelist *ndlp, void *arg, uint32_t evt) 1041{ 1042 struct lpfc_hba *phba; 1043 LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg; 1044 MAILBOX_t *mb = &pmb->u.mb; 1045 uint16_t rpi; 1046 1047 phba = vport->phba; 1048 /* Release the RPI */ 1049 if (!(phba->pport->load_flag & FC_UNLOADING) && 1050 !mb->mbxStatus) { 1051 rpi = pmb->u.mb.un.varWords[0]; 1052 lpfc_release_rpi(phba, vport, rpi); 1053 } 1054 return ndlp->nlp_state; 1055} 1056 1057static uint32_t 1058lpfc_device_rm_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 1059 void *arg, uint32_t evt) 1060{ 1061 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 1062 1063 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) { 1064 spin_lock_irq(shost->host_lock); 1065 ndlp->nlp_flag |= NLP_NODEV_REMOVE; 1066 spin_unlock_irq(shost->host_lock); 1067 return ndlp->nlp_state; 1068 } else { 1069 /* software abort outstanding PLOGI */ 1070 lpfc_els_abort(vport->phba, ndlp); 1071 1072 lpfc_drop_node(vport, ndlp); 1073 return NLP_STE_FREED_NODE; 1074 } 1075} 1076 1077static uint32_t 1078lpfc_device_recov_plogi_issue(struct lpfc_vport *vport, 1079 struct lpfc_nodelist *ndlp, 1080 void *arg, 1081 uint32_t evt) 1082{ 1083 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 1084 struct lpfc_hba *phba = vport->phba; 1085 1086 /* Don't do anything that will mess up processing of the 1087 * previous RSCN. 1088 */ 1089 if (vport->fc_flag & FC_RSCN_DEFERRED) 1090 return ndlp->nlp_state; 1091 1092 /* software abort outstanding PLOGI */ 1093 lpfc_els_abort(phba, ndlp); 1094 1095 ndlp->nlp_prev_state = NLP_STE_PLOGI_ISSUE; 1096 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE); 1097 spin_lock_irq(shost->host_lock); 1098 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC); 1099 spin_unlock_irq(shost->host_lock); 1100 1101 return ndlp->nlp_state; 1102} 1103 1104static uint32_t 1105lpfc_rcv_plogi_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 1106 void *arg, uint32_t evt) 1107{ 1108 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 1109 struct lpfc_hba *phba = vport->phba; 1110 struct lpfc_iocbq *cmdiocb; 1111 1112 /* software abort outstanding ADISC */ 1113 lpfc_els_abort(phba, ndlp); 1114 1115 cmdiocb = (struct lpfc_iocbq *) arg; 1116 1117 if (lpfc_rcv_plogi(vport, ndlp, cmdiocb)) { 1118 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) { 1119 spin_lock_irq(shost->host_lock); 1120 ndlp->nlp_flag &= ~NLP_NPR_2B_DISC; 1121 spin_unlock_irq(shost->host_lock); 1122 if (vport->num_disc_nodes) 1123 lpfc_more_adisc(vport); 1124 } 1125 return ndlp->nlp_state; 1126 } 1127 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE; 1128 lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0); 1129 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE); 1130 1131 return ndlp->nlp_state; 1132} 1133 1134static uint32_t 1135lpfc_rcv_prli_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 1136 void *arg, uint32_t evt) 1137{ 1138 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg; 1139 1140 lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp); 1141 return ndlp->nlp_state; 1142} 1143 1144static uint32_t 1145lpfc_rcv_logo_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 1146 void *arg, uint32_t evt) 1147{ 1148 struct lpfc_hba *phba = vport->phba; 1149 struct lpfc_iocbq *cmdiocb; 1150 1151 cmdiocb = (struct lpfc_iocbq *) arg; 1152 1153 /* software abort outstanding ADISC */ 1154 lpfc_els_abort(phba, ndlp); 1155 1156 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO); 1157 return ndlp->nlp_state; 1158} 1159 1160static uint32_t 1161lpfc_rcv_padisc_adisc_issue(struct lpfc_vport *vport, 1162 struct lpfc_nodelist *ndlp, 1163 void *arg, uint32_t evt) 1164{ 1165 struct lpfc_iocbq *cmdiocb; 1166 1167 cmdiocb = (struct lpfc_iocbq *) arg; 1168 1169 lpfc_rcv_padisc(vport, ndlp, cmdiocb); 1170 return ndlp->nlp_state; 1171} 1172 1173static uint32_t 1174lpfc_rcv_prlo_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 1175 void *arg, uint32_t evt) 1176{ 1177 struct lpfc_iocbq *cmdiocb; 1178 1179 cmdiocb = (struct lpfc_iocbq *) arg; 1180 1181 /* Treat like rcv logo */ 1182 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_PRLO); 1183 return ndlp->nlp_state; 1184} 1185 1186static uint32_t 1187lpfc_cmpl_adisc_adisc_issue(struct lpfc_vport *vport, 1188 struct lpfc_nodelist *ndlp, 1189 void *arg, uint32_t evt) 1190{ 1191 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 1192 struct lpfc_hba *phba = vport->phba; 1193 struct lpfc_iocbq *cmdiocb, *rspiocb; 1194 IOCB_t *irsp; 1195 ADISC *ap; 1196 int rc; 1197 1198 cmdiocb = (struct lpfc_iocbq *) arg; 1199 rspiocb = cmdiocb->context_un.rsp_iocb; 1200 1201 ap = (ADISC *)lpfc_check_elscmpl_iocb(phba, cmdiocb, rspiocb); 1202 irsp = &rspiocb->iocb; 1203 1204 if ((irsp->ulpStatus) || 1205 (!lpfc_check_adisc(vport, ndlp, &ap->nodeName, &ap->portName))) { 1206 /* 1 sec timeout */ 1207 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ); 1208 spin_lock_irq(shost->host_lock); 1209 ndlp->nlp_flag |= NLP_DELAY_TMO; 1210 spin_unlock_irq(shost->host_lock); 1211 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI; 1212 1213 memset(&ndlp->nlp_nodename, 0, sizeof(struct lpfc_name)); 1214 memset(&ndlp->nlp_portname, 0, sizeof(struct lpfc_name)); 1215 1216 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE; 1217 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE); 1218 lpfc_unreg_rpi(vport, ndlp); 1219 return ndlp->nlp_state; 1220 } 1221 1222 if (phba->sli_rev == LPFC_SLI_REV4) { 1223 rc = lpfc_sli4_resume_rpi(ndlp); 1224 if (rc) { 1225 /* Stay in state and retry. */ 1226 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE; 1227 return ndlp->nlp_state; 1228 } 1229 } 1230 1231 if (ndlp->nlp_type & NLP_FCP_TARGET) { 1232 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE; 1233 lpfc_nlp_set_state(vport, ndlp, NLP_STE_MAPPED_NODE); 1234 } else { 1235 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE; 1236 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE); 1237 } 1238 1239 return ndlp->nlp_state; 1240} 1241 1242static uint32_t 1243lpfc_device_rm_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 1244 void *arg, uint32_t evt) 1245{ 1246 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 1247 1248 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) { 1249 spin_lock_irq(shost->host_lock); 1250 ndlp->nlp_flag |= NLP_NODEV_REMOVE; 1251 spin_unlock_irq(shost->host_lock); 1252 return ndlp->nlp_state; 1253 } else { 1254 /* software abort outstanding ADISC */ 1255 lpfc_els_abort(vport->phba, ndlp); 1256 1257 lpfc_drop_node(vport, ndlp); 1258 return NLP_STE_FREED_NODE; 1259 } 1260} 1261 1262static uint32_t 1263lpfc_device_recov_adisc_issue(struct lpfc_vport *vport, 1264 struct lpfc_nodelist *ndlp, 1265 void *arg, 1266 uint32_t evt) 1267{ 1268 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 1269 struct lpfc_hba *phba = vport->phba; 1270 1271 /* Don't do anything that will mess up processing of the 1272 * previous RSCN. 1273 */ 1274 if (vport->fc_flag & FC_RSCN_DEFERRED) 1275 return ndlp->nlp_state; 1276 1277 /* software abort outstanding ADISC */ 1278 lpfc_els_abort(phba, ndlp); 1279 1280 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE; 1281 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE); 1282 spin_lock_irq(shost->host_lock); 1283 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC); 1284 spin_unlock_irq(shost->host_lock); 1285 lpfc_disc_set_adisc(vport, ndlp); 1286 return ndlp->nlp_state; 1287} 1288 1289static uint32_t 1290lpfc_rcv_plogi_reglogin_issue(struct lpfc_vport *vport, 1291 struct lpfc_nodelist *ndlp, 1292 void *arg, 1293 uint32_t evt) 1294{ 1295 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg; 1296 1297 lpfc_rcv_plogi(vport, ndlp, cmdiocb); 1298 return ndlp->nlp_state; 1299} 1300 1301static uint32_t 1302lpfc_rcv_prli_reglogin_issue(struct lpfc_vport *vport, 1303 struct lpfc_nodelist *ndlp, 1304 void *arg, 1305 uint32_t evt) 1306{ 1307 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg; 1308 1309 lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp); 1310 return ndlp->nlp_state; 1311} 1312 1313static uint32_t 1314lpfc_rcv_logo_reglogin_issue(struct lpfc_vport *vport, 1315 struct lpfc_nodelist *ndlp, 1316 void *arg, 1317 uint32_t evt) 1318{ 1319 struct lpfc_hba *phba = vport->phba; 1320 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg; 1321 LPFC_MBOXQ_t *mb; 1322 LPFC_MBOXQ_t *nextmb; 1323 struct lpfc_dmabuf *mp; 1324 1325 cmdiocb = (struct lpfc_iocbq *) arg; 1326 1327 /* cleanup any ndlp on mbox q waiting for reglogin cmpl */ 1328 if ((mb = phba->sli.mbox_active)) { 1329 if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) && 1330 (ndlp == (struct lpfc_nodelist *) mb->context2)) { 1331 lpfc_nlp_put(ndlp); 1332 mb->context2 = NULL; 1333 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl; 1334 } 1335 } 1336 1337 spin_lock_irq(&phba->hbalock); 1338 list_for_each_entry_safe(mb, nextmb, &phba->sli.mboxq, list) { 1339 if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) && 1340 (ndlp == (struct lpfc_nodelist *) mb->context2)) { 1341 if (phba->sli_rev == LPFC_SLI_REV4) { 1342 spin_unlock_irq(&phba->hbalock); 1343 lpfc_sli4_free_rpi(phba, 1344 mb->u.mb.un.varRegLogin.rpi); 1345 spin_lock_irq(&phba->hbalock); 1346 } 1347 mp = (struct lpfc_dmabuf *) (mb->context1); 1348 if (mp) { 1349 __lpfc_mbuf_free(phba, mp->virt, mp->phys); 1350 kfree(mp); 1351 } 1352 lpfc_nlp_put(ndlp); 1353 list_del(&mb->list); 1354 phba->sli.mboxq_cnt--; 1355 mempool_free(mb, phba->mbox_mem_pool); 1356 } 1357 } 1358 spin_unlock_irq(&phba->hbalock); 1359 1360 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO); 1361 return ndlp->nlp_state; 1362} 1363 1364static uint32_t 1365lpfc_rcv_padisc_reglogin_issue(struct lpfc_vport *vport, 1366 struct lpfc_nodelist *ndlp, 1367 void *arg, 1368 uint32_t evt) 1369{ 1370 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg; 1371 1372 lpfc_rcv_padisc(vport, ndlp, cmdiocb); 1373 return ndlp->nlp_state; 1374} 1375 1376static uint32_t 1377lpfc_rcv_prlo_reglogin_issue(struct lpfc_vport *vport, 1378 struct lpfc_nodelist *ndlp, 1379 void *arg, 1380 uint32_t evt) 1381{ 1382 struct lpfc_iocbq *cmdiocb; 1383 1384 cmdiocb = (struct lpfc_iocbq *) arg; 1385 lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL); 1386 return ndlp->nlp_state; 1387} 1388 1389static uint32_t 1390lpfc_cmpl_reglogin_reglogin_issue(struct lpfc_vport *vport, 1391 struct lpfc_nodelist *ndlp, 1392 void *arg, 1393 uint32_t evt) 1394{ 1395 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 1396 LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg; 1397 MAILBOX_t *mb = &pmb->u.mb; 1398 uint32_t did = mb->un.varWords[1]; 1399 1400 if (mb->mbxStatus) { 1401 /* RegLogin failed */ 1402 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY, 1403 "0246 RegLogin failed Data: x%x x%x x%x\n", 1404 did, mb->mbxStatus, vport->port_state); 1405 /* 1406 * If RegLogin failed due to lack of HBA resources do not 1407 * retry discovery. 1408 */ 1409 if (mb->mbxStatus == MBXERR_RPI_FULL) { 1410 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE; 1411 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE); 1412 return ndlp->nlp_state; 1413 } 1414 1415 /* Put ndlp in npr state set plogi timer for 1 sec */ 1416 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ * 1); 1417 spin_lock_irq(shost->host_lock); 1418 ndlp->nlp_flag |= NLP_DELAY_TMO; 1419 spin_unlock_irq(shost->host_lock); 1420 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI; 1421 1422 lpfc_issue_els_logo(vport, ndlp, 0); 1423 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE; 1424 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE); 1425 return ndlp->nlp_state; 1426 } 1427 1428 ndlp->nlp_rpi = mb->un.varWords[0]; 1429 ndlp->nlp_flag |= NLP_RPI_VALID; 1430 1431 /* Only if we are not a fabric nport do we issue PRLI */ 1432 if (!(ndlp->nlp_type & NLP_FABRIC)) { 1433 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE; 1434 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PRLI_ISSUE); 1435 lpfc_issue_els_prli(vport, ndlp, 0); 1436 } else { 1437 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE; 1438 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE); 1439 } 1440 return ndlp->nlp_state; 1441} 1442 1443static uint32_t 1444lpfc_device_rm_reglogin_issue(struct lpfc_vport *vport, 1445 struct lpfc_nodelist *ndlp, 1446 void *arg, 1447 uint32_t evt) 1448{ 1449 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 1450 1451 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) { 1452 spin_lock_irq(shost->host_lock); 1453 ndlp->nlp_flag |= NLP_NODEV_REMOVE; 1454 spin_unlock_irq(shost->host_lock); 1455 return ndlp->nlp_state; 1456 } else { 1457 lpfc_drop_node(vport, ndlp); 1458 return NLP_STE_FREED_NODE; 1459 } 1460} 1461 1462static uint32_t 1463lpfc_device_recov_reglogin_issue(struct lpfc_vport *vport, 1464 struct lpfc_nodelist *ndlp, 1465 void *arg, 1466 uint32_t evt) 1467{ 1468 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 1469 1470 /* Don't do anything that will mess up processing of the 1471 * previous RSCN. 1472 */ 1473 if (vport->fc_flag & FC_RSCN_DEFERRED) 1474 return ndlp->nlp_state; 1475 1476 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE; 1477 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE); 1478 spin_lock_irq(shost->host_lock); 1479 ndlp->nlp_flag |= NLP_IGNR_REG_CMPL; 1480 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC); 1481 spin_unlock_irq(shost->host_lock); 1482 lpfc_disc_set_adisc(vport, ndlp); 1483 return ndlp->nlp_state; 1484} 1485 1486static uint32_t 1487lpfc_rcv_plogi_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 1488 void *arg, uint32_t evt) 1489{ 1490 struct lpfc_iocbq *cmdiocb; 1491 1492 cmdiocb = (struct lpfc_iocbq *) arg; 1493 1494 lpfc_rcv_plogi(vport, ndlp, cmdiocb); 1495 return ndlp->nlp_state; 1496} 1497 1498static uint32_t 1499lpfc_rcv_prli_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 1500 void *arg, uint32_t evt) 1501{ 1502 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg; 1503 1504 lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp); 1505 return ndlp->nlp_state; 1506} 1507 1508static uint32_t 1509lpfc_rcv_logo_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 1510 void *arg, uint32_t evt) 1511{ 1512 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg; 1513 1514 /* Software abort outstanding PRLI before sending acc */ 1515 lpfc_els_abort(vport->phba, ndlp); 1516 1517 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO); 1518 return ndlp->nlp_state; 1519} 1520 1521static uint32_t 1522lpfc_rcv_padisc_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 1523 void *arg, uint32_t evt) 1524{ 1525 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg; 1526 1527 lpfc_rcv_padisc(vport, ndlp, cmdiocb); 1528 return ndlp->nlp_state; 1529} 1530 1531/* This routine is envoked when we rcv a PRLO request from a nport 1532 * we are logged into. We should send back a PRLO rsp setting the 1533 * appropriate bits. 1534 * NEXT STATE = PRLI_ISSUE 1535 */ 1536static uint32_t 1537lpfc_rcv_prlo_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 1538 void *arg, uint32_t evt) 1539{ 1540 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg; 1541 1542 lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL); 1543 return ndlp->nlp_state; 1544} 1545 1546static uint32_t 1547lpfc_cmpl_prli_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 1548 void *arg, uint32_t evt) 1549{ 1550 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 1551 struct lpfc_iocbq *cmdiocb, *rspiocb; 1552 struct lpfc_hba *phba = vport->phba; 1553 IOCB_t *irsp; 1554 PRLI *npr; 1555 1556 cmdiocb = (struct lpfc_iocbq *) arg; 1557 rspiocb = cmdiocb->context_un.rsp_iocb; 1558 npr = (PRLI *)lpfc_check_elscmpl_iocb(phba, cmdiocb, rspiocb); 1559 1560 irsp = &rspiocb->iocb; 1561 if (irsp->ulpStatus) { 1562 if ((vport->port_type == LPFC_NPIV_PORT) && 1563 vport->cfg_restrict_login) { 1564 goto out; 1565 } 1566 ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE; 1567 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE); 1568 return ndlp->nlp_state; 1569 } 1570 1571 /* Check out PRLI rsp */ 1572 ndlp->nlp_type &= ~(NLP_FCP_TARGET | NLP_FCP_INITIATOR); 1573 ndlp->nlp_fcp_info &= ~NLP_FCP_2_DEVICE; 1574 if ((npr->acceptRspCode == PRLI_REQ_EXECUTED) && 1575 (npr->prliType == PRLI_FCP_TYPE)) { 1576 if (npr->initiatorFunc) 1577 ndlp->nlp_type |= NLP_FCP_INITIATOR; 1578 if (npr->targetFunc) 1579 ndlp->nlp_type |= NLP_FCP_TARGET; 1580 if (npr->Retry) 1581 ndlp->nlp_fcp_info |= NLP_FCP_2_DEVICE; 1582 } 1583 if (!(ndlp->nlp_type & NLP_FCP_TARGET) && 1584 (vport->port_type == LPFC_NPIV_PORT) && 1585 vport->cfg_restrict_login) { 1586out: 1587 spin_lock_irq(shost->host_lock); 1588 ndlp->nlp_flag |= NLP_TARGET_REMOVE; 1589 spin_unlock_irq(shost->host_lock); 1590 lpfc_issue_els_logo(vport, ndlp, 0); 1591 1592 ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE; 1593 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE); 1594 return ndlp->nlp_state; 1595 } 1596 1597 ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE; 1598 if (ndlp->nlp_type & NLP_FCP_TARGET) 1599 lpfc_nlp_set_state(vport, ndlp, NLP_STE_MAPPED_NODE); 1600 else 1601 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE); 1602 return ndlp->nlp_state; 1603} 1604 1605/*! lpfc_device_rm_prli_issue 1606 * 1607 * \pre 1608 * \post 1609 * \param phba 1610 * \param ndlp 1611 * \param arg 1612 * \param evt 1613 * \return uint32_t 1614 * 1615 * \b Description: 1616 * This routine is envoked when we a request to remove a nport we are in the 1617 * process of PRLIing. We should software abort outstanding prli, unreg 1618 * login, send a logout. We will change node state to UNUSED_NODE, put it 1619 * on plogi list so it can be freed when LOGO completes. 1620 * 1621 */ 1622 1623static uint32_t 1624lpfc_device_rm_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 1625 void *arg, uint32_t evt) 1626{ 1627 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 1628 1629 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) { 1630 spin_lock_irq(shost->host_lock); 1631 ndlp->nlp_flag |= NLP_NODEV_REMOVE; 1632 spin_unlock_irq(shost->host_lock); 1633 return ndlp->nlp_state; 1634 } else { 1635 /* software abort outstanding PLOGI */ 1636 lpfc_els_abort(vport->phba, ndlp); 1637 1638 lpfc_drop_node(vport, ndlp); 1639 return NLP_STE_FREED_NODE; 1640 } 1641} 1642 1643 1644/*! lpfc_device_recov_prli_issue 1645 * 1646 * \pre 1647 * \post 1648 * \param phba 1649 * \param ndlp 1650 * \param arg 1651 * \param evt 1652 * \return uint32_t 1653 * 1654 * \b Description: 1655 * The routine is envoked when the state of a device is unknown, like 1656 * during a link down. We should remove the nodelist entry from the 1657 * unmapped list, issue a UNREG_LOGIN, do a software abort of the 1658 * outstanding PRLI command, then free the node entry. 1659 */ 1660static uint32_t 1661lpfc_device_recov_prli_issue(struct lpfc_vport *vport, 1662 struct lpfc_nodelist *ndlp, 1663 void *arg, 1664 uint32_t evt) 1665{ 1666 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 1667 struct lpfc_hba *phba = vport->phba; 1668 1669 /* Don't do anything that will mess up processing of the 1670 * previous RSCN. 1671 */ 1672 if (vport->fc_flag & FC_RSCN_DEFERRED) 1673 return ndlp->nlp_state; 1674 1675 /* software abort outstanding PRLI */ 1676 lpfc_els_abort(phba, ndlp); 1677 1678 ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE; 1679 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE); 1680 spin_lock_irq(shost->host_lock); 1681 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC); 1682 spin_unlock_irq(shost->host_lock); 1683 lpfc_disc_set_adisc(vport, ndlp); 1684 return ndlp->nlp_state; 1685} 1686 1687static uint32_t 1688lpfc_rcv_plogi_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 1689 void *arg, uint32_t evt) 1690{ 1691 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg; 1692 1693 lpfc_rcv_plogi(vport, ndlp, cmdiocb); 1694 return ndlp->nlp_state; 1695} 1696 1697static uint32_t 1698lpfc_rcv_prli_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 1699 void *arg, uint32_t evt) 1700{ 1701 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg; 1702 1703 lpfc_rcv_prli(vport, ndlp, cmdiocb); 1704 lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp); 1705 return ndlp->nlp_state; 1706} 1707 1708static uint32_t 1709lpfc_rcv_logo_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 1710 void *arg, uint32_t evt) 1711{ 1712 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg; 1713 1714 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO); 1715 return ndlp->nlp_state; 1716} 1717 1718static uint32_t 1719lpfc_rcv_padisc_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 1720 void *arg, uint32_t evt) 1721{ 1722 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg; 1723 1724 lpfc_rcv_padisc(vport, ndlp, cmdiocb); 1725 return ndlp->nlp_state; 1726} 1727 1728static uint32_t 1729lpfc_rcv_prlo_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 1730 void *arg, uint32_t evt) 1731{ 1732 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg; 1733 1734 lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL); 1735 return ndlp->nlp_state; 1736} 1737 1738static uint32_t 1739lpfc_device_recov_unmap_node(struct lpfc_vport *vport, 1740 struct lpfc_nodelist *ndlp, 1741 void *arg, 1742 uint32_t evt) 1743{ 1744 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 1745 1746 ndlp->nlp_prev_state = NLP_STE_UNMAPPED_NODE; 1747 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE); 1748 spin_lock_irq(shost->host_lock); 1749 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC); 1750 spin_unlock_irq(shost->host_lock); 1751 lpfc_disc_set_adisc(vport, ndlp); 1752 1753 return ndlp->nlp_state; 1754} 1755 1756static uint32_t 1757lpfc_rcv_plogi_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 1758 void *arg, uint32_t evt) 1759{ 1760 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg; 1761 1762 lpfc_rcv_plogi(vport, ndlp, cmdiocb); 1763 return ndlp->nlp_state; 1764} 1765 1766static uint32_t 1767lpfc_rcv_prli_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 1768 void *arg, uint32_t evt) 1769{ 1770 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg; 1771 1772 lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp); 1773 return ndlp->nlp_state; 1774} 1775 1776static uint32_t 1777lpfc_rcv_logo_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 1778 void *arg, uint32_t evt) 1779{ 1780 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg; 1781 1782 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO); 1783 return ndlp->nlp_state; 1784} 1785 1786static uint32_t 1787lpfc_rcv_padisc_mapped_node(struct lpfc_vport *vport, 1788 struct lpfc_nodelist *ndlp, 1789 void *arg, uint32_t evt) 1790{ 1791 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg; 1792 1793 lpfc_rcv_padisc(vport, ndlp, cmdiocb); 1794 return ndlp->nlp_state; 1795} 1796 1797static uint32_t 1798lpfc_rcv_prlo_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 1799 void *arg, uint32_t evt) 1800{ 1801 struct lpfc_hba *phba = vport->phba; 1802 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg; 1803 1804 /* flush the target */ 1805 lpfc_sli_abort_iocb(vport, &phba->sli.ring[phba->sli.fcp_ring], 1806 ndlp->nlp_sid, 0, LPFC_CTX_TGT); 1807 1808 /* Treat like rcv logo */ 1809 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_PRLO); 1810 return ndlp->nlp_state; 1811} 1812 1813static uint32_t 1814lpfc_device_recov_mapped_node(struct lpfc_vport *vport, 1815 struct lpfc_nodelist *ndlp, 1816 void *arg, 1817 uint32_t evt) 1818{ 1819 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 1820 1821 ndlp->nlp_prev_state = NLP_STE_MAPPED_NODE; 1822 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE); 1823 spin_lock_irq(shost->host_lock); 1824 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC); 1825 spin_unlock_irq(shost->host_lock); 1826 lpfc_disc_set_adisc(vport, ndlp); 1827 return ndlp->nlp_state; 1828} 1829 1830static uint32_t 1831lpfc_rcv_plogi_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 1832 void *arg, uint32_t evt) 1833{ 1834 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 1835 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg; 1836 1837 /* Ignore PLOGI if we have an outstanding LOGO */ 1838 if (ndlp->nlp_flag & (NLP_LOGO_SND | NLP_LOGO_ACC)) 1839 return ndlp->nlp_state; 1840 if (lpfc_rcv_plogi(vport, ndlp, cmdiocb)) { 1841 lpfc_cancel_retry_delay_tmo(vport, ndlp); 1842 spin_lock_irq(shost->host_lock); 1843 ndlp->nlp_flag &= ~(NLP_NPR_ADISC | NLP_NPR_2B_DISC); 1844 spin_unlock_irq(shost->host_lock); 1845 } else if (!(ndlp->nlp_flag & NLP_NPR_2B_DISC)) { 1846 /* send PLOGI immediately, move to PLOGI issue state */ 1847 if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) { 1848 ndlp->nlp_prev_state = NLP_STE_NPR_NODE; 1849 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE); 1850 lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0); 1851 } 1852 } 1853 return ndlp->nlp_state; 1854} 1855 1856static uint32_t 1857lpfc_rcv_prli_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 1858 void *arg, uint32_t evt) 1859{ 1860 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 1861 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg; 1862 struct ls_rjt stat; 1863 1864 memset(&stat, 0, sizeof (struct ls_rjt)); 1865 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC; 1866 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE; 1867 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL); 1868 1869 if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) { 1870 if (ndlp->nlp_flag & NLP_NPR_ADISC) { 1871 spin_lock_irq(shost->host_lock); 1872 ndlp->nlp_flag &= ~NLP_NPR_ADISC; 1873 ndlp->nlp_prev_state = NLP_STE_NPR_NODE; 1874 spin_unlock_irq(shost->host_lock); 1875 lpfc_nlp_set_state(vport, ndlp, NLP_STE_ADISC_ISSUE); 1876 lpfc_issue_els_adisc(vport, ndlp, 0); 1877 } else { 1878 ndlp->nlp_prev_state = NLP_STE_NPR_NODE; 1879 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE); 1880 lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0); 1881 } 1882 } 1883 return ndlp->nlp_state; 1884} 1885 1886static uint32_t 1887lpfc_rcv_logo_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 1888 void *arg, uint32_t evt) 1889{ 1890 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg; 1891 1892 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO); 1893 return ndlp->nlp_state; 1894} 1895 1896static uint32_t 1897lpfc_rcv_padisc_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 1898 void *arg, uint32_t evt) 1899{ 1900 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg; 1901 1902 lpfc_rcv_padisc(vport, ndlp, cmdiocb); 1903 /* 1904 * Do not start discovery if discovery is about to start 1905 * or discovery in progress for this node. Starting discovery 1906 * here will affect the counting of discovery threads. 1907 */ 1908 if (!(ndlp->nlp_flag & NLP_DELAY_TMO) && 1909 !(ndlp->nlp_flag & NLP_NPR_2B_DISC)) { 1910 if (ndlp->nlp_flag & NLP_NPR_ADISC) { 1911 ndlp->nlp_flag &= ~NLP_NPR_ADISC; 1912 ndlp->nlp_prev_state = NLP_STE_NPR_NODE; 1913 lpfc_nlp_set_state(vport, ndlp, NLP_STE_ADISC_ISSUE); 1914 lpfc_issue_els_adisc(vport, ndlp, 0); 1915 } else { 1916 ndlp->nlp_prev_state = NLP_STE_NPR_NODE; 1917 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE); 1918 lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0); 1919 } 1920 } 1921 return ndlp->nlp_state; 1922} 1923 1924static uint32_t 1925lpfc_rcv_prlo_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 1926 void *arg, uint32_t evt) 1927{ 1928 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 1929 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg; 1930 1931 spin_lock_irq(shost->host_lock); 1932 ndlp->nlp_flag |= NLP_LOGO_ACC; 1933 spin_unlock_irq(shost->host_lock); 1934 1935 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL); 1936 1937 if ((ndlp->nlp_flag & NLP_DELAY_TMO) == 0) { 1938 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ * 1); 1939 spin_lock_irq(shost->host_lock); 1940 ndlp->nlp_flag |= NLP_DELAY_TMO; 1941 ndlp->nlp_flag &= ~NLP_NPR_ADISC; 1942 spin_unlock_irq(shost->host_lock); 1943 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI; 1944 } else { 1945 spin_lock_irq(shost->host_lock); 1946 ndlp->nlp_flag &= ~NLP_NPR_ADISC; 1947 spin_unlock_irq(shost->host_lock); 1948 } 1949 return ndlp->nlp_state; 1950} 1951 1952static uint32_t 1953lpfc_cmpl_plogi_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 1954 void *arg, uint32_t evt) 1955{ 1956 struct lpfc_iocbq *cmdiocb, *rspiocb; 1957 IOCB_t *irsp; 1958 1959 cmdiocb = (struct lpfc_iocbq *) arg; 1960 rspiocb = cmdiocb->context_un.rsp_iocb; 1961 1962 irsp = &rspiocb->iocb; 1963 if (irsp->ulpStatus) { 1964 ndlp->nlp_flag |= NLP_DEFER_RM; 1965 return NLP_STE_FREED_NODE; 1966 } 1967 return ndlp->nlp_state; 1968} 1969 1970static uint32_t 1971lpfc_cmpl_prli_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 1972 void *arg, uint32_t evt) 1973{ 1974 struct lpfc_iocbq *cmdiocb, *rspiocb; 1975 IOCB_t *irsp; 1976 1977 cmdiocb = (struct lpfc_iocbq *) arg; 1978 rspiocb = cmdiocb->context_un.rsp_iocb; 1979 1980 irsp = &rspiocb->iocb; 1981 if (irsp->ulpStatus && (ndlp->nlp_flag & NLP_NODEV_REMOVE)) { 1982 lpfc_drop_node(vport, ndlp); 1983 return NLP_STE_FREED_NODE; 1984 } 1985 return ndlp->nlp_state; 1986} 1987 1988static uint32_t 1989lpfc_cmpl_logo_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 1990 void *arg, uint32_t evt) 1991{ 1992 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 1993 if (ndlp->nlp_DID == Fabric_DID) { 1994 spin_lock_irq(shost->host_lock); 1995 vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP); 1996 spin_unlock_irq(shost->host_lock); 1997 } 1998 lpfc_unreg_rpi(vport, ndlp); 1999 return ndlp->nlp_state; 2000} 2001 2002static uint32_t 2003lpfc_cmpl_adisc_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 2004 void *arg, uint32_t evt) 2005{ 2006 struct lpfc_iocbq *cmdiocb, *rspiocb; 2007 IOCB_t *irsp; 2008 2009 cmdiocb = (struct lpfc_iocbq *) arg; 2010 rspiocb = cmdiocb->context_un.rsp_iocb; 2011 2012 irsp = &rspiocb->iocb; 2013 if (irsp->ulpStatus && (ndlp->nlp_flag & NLP_NODEV_REMOVE)) { 2014 lpfc_drop_node(vport, ndlp); 2015 return NLP_STE_FREED_NODE; 2016 } 2017 return ndlp->nlp_state; 2018} 2019 2020static uint32_t 2021lpfc_cmpl_reglogin_npr_node(struct lpfc_vport *vport, 2022 struct lpfc_nodelist *ndlp, 2023 void *arg, uint32_t evt) 2024{ 2025 LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg; 2026 MAILBOX_t *mb = &pmb->u.mb; 2027 2028 if (!mb->mbxStatus) { 2029 ndlp->nlp_rpi = mb->un.varWords[0]; 2030 ndlp->nlp_flag |= NLP_RPI_VALID; 2031 } else { 2032 if (ndlp->nlp_flag & NLP_NODEV_REMOVE) { 2033 lpfc_drop_node(vport, ndlp); 2034 return NLP_STE_FREED_NODE; 2035 } 2036 } 2037 return ndlp->nlp_state; 2038} 2039 2040static uint32_t 2041lpfc_device_rm_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 2042 void *arg, uint32_t evt) 2043{ 2044 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 2045 2046 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) { 2047 spin_lock_irq(shost->host_lock); 2048 ndlp->nlp_flag |= NLP_NODEV_REMOVE; 2049 spin_unlock_irq(shost->host_lock); 2050 return ndlp->nlp_state; 2051 } 2052 lpfc_drop_node(vport, ndlp); 2053 return NLP_STE_FREED_NODE; 2054} 2055 2056static uint32_t 2057lpfc_device_recov_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 2058 void *arg, uint32_t evt) 2059{ 2060 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 2061 2062 /* Don't do anything that will mess up processing of the 2063 * previous RSCN. 2064 */ 2065 if (vport->fc_flag & FC_RSCN_DEFERRED) 2066 return ndlp->nlp_state; 2067 2068 lpfc_cancel_retry_delay_tmo(vport, ndlp); 2069 spin_lock_irq(shost->host_lock); 2070 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC); 2071 spin_unlock_irq(shost->host_lock); 2072 return ndlp->nlp_state; 2073} 2074 2075 2076/* This next section defines the NPort Discovery State Machine */ 2077 2078/* There are 4 different double linked lists nodelist entries can reside on. 2079 * The plogi list and adisc list are used when Link Up discovery or RSCN 2080 * processing is needed. Each list holds the nodes that we will send PLOGI 2081 * or ADISC on. These lists will keep track of what nodes will be effected 2082 * by an RSCN, or a Link Up (Typically, all nodes are effected on Link Up). 2083 * The unmapped_list will contain all nodes that we have successfully logged 2084 * into at the Fibre Channel level. The mapped_list will contain all nodes 2085 * that are mapped FCP targets. 2086 */ 2087/* 2088 * The bind list is a list of undiscovered (potentially non-existent) nodes 2089 * that we have saved binding information on. This information is used when 2090 * nodes transition from the unmapped to the mapped list. 2091 */ 2092/* For UNUSED_NODE state, the node has just been allocated . 2093 * For PLOGI_ISSUE and REG_LOGIN_ISSUE, the node is on 2094 * the PLOGI list. For REG_LOGIN_COMPL, the node is taken off the PLOGI list 2095 * and put on the unmapped list. For ADISC processing, the node is taken off 2096 * the ADISC list and placed on either the mapped or unmapped list (depending 2097 * on its previous state). Once on the unmapped list, a PRLI is issued and the 2098 * state changed to PRLI_ISSUE. When the PRLI completion occurs, the state is 2099 * changed to UNMAPPED_NODE. If the completion indicates a mapped 2100 * node, the node is taken off the unmapped list. The binding list is checked 2101 * for a valid binding, or a binding is automatically assigned. If binding 2102 * assignment is unsuccessful, the node is left on the unmapped list. If 2103 * binding assignment is successful, the associated binding list entry (if 2104 * any) is removed, and the node is placed on the mapped list. 2105 */ 2106/* 2107 * For a Link Down, all nodes on the ADISC, PLOGI, unmapped or mapped 2108 * lists will receive a DEVICE_RECOVERY event. If the linkdown or devloss timers 2109 * expire, all effected nodes will receive a DEVICE_RM event. 2110 */ 2111/* 2112 * For a Link Up or RSCN, all nodes will move from the mapped / unmapped lists 2113 * to either the ADISC or PLOGI list. After a Nameserver query or ALPA loopmap 2114 * check, additional nodes may be added or removed (via DEVICE_RM) to / from 2115 * the PLOGI or ADISC lists. Once the PLOGI and ADISC lists are populated, 2116 * we will first process the ADISC list. 32 entries are processed initially and 2117 * ADISC is initited for each one. Completions / Events for each node are 2118 * funnelled thru the state machine. As each node finishes ADISC processing, it 2119 * starts ADISC for any nodes waiting for ADISC processing. If no nodes are 2120 * waiting, and the ADISC list count is identically 0, then we are done. For 2121 * Link Up discovery, since all nodes on the PLOGI list are UNREG_LOGIN'ed, we 2122 * can issue a CLEAR_LA and reenable Link Events. Next we will process the PLOGI 2123 * list. 32 entries are processed initially and PLOGI is initited for each one. 2124 * Completions / Events for each node are funnelled thru the state machine. As 2125 * each node finishes PLOGI processing, it starts PLOGI for any nodes waiting 2126 * for PLOGI processing. If no nodes are waiting, and the PLOGI list count is 2127 * indentically 0, then we are done. We have now completed discovery / RSCN 2128 * handling. Upon completion, ALL nodes should be on either the mapped or 2129 * unmapped lists. 2130 */ 2131 2132static uint32_t (*lpfc_disc_action[NLP_STE_MAX_STATE * NLP_EVT_MAX_EVENT]) 2133 (struct lpfc_vport *, struct lpfc_nodelist *, void *, uint32_t) = { 2134 /* Action routine Event Current State */ 2135 lpfc_rcv_plogi_unused_node, /* RCV_PLOGI UNUSED_NODE */ 2136 lpfc_rcv_els_unused_node, /* RCV_PRLI */ 2137 lpfc_rcv_logo_unused_node, /* RCV_LOGO */ 2138 lpfc_rcv_els_unused_node, /* RCV_ADISC */ 2139 lpfc_rcv_els_unused_node, /* RCV_PDISC */ 2140 lpfc_rcv_els_unused_node, /* RCV_PRLO */ 2141 lpfc_disc_illegal, /* CMPL_PLOGI */ 2142 lpfc_disc_illegal, /* CMPL_PRLI */ 2143 lpfc_cmpl_logo_unused_node, /* CMPL_LOGO */ 2144 lpfc_disc_illegal, /* CMPL_ADISC */ 2145 lpfc_disc_illegal, /* CMPL_REG_LOGIN */ 2146 lpfc_device_rm_unused_node, /* DEVICE_RM */ 2147 lpfc_disc_illegal, /* DEVICE_RECOVERY */ 2148 2149 lpfc_rcv_plogi_plogi_issue, /* RCV_PLOGI PLOGI_ISSUE */ 2150 lpfc_rcv_prli_plogi_issue, /* RCV_PRLI */ 2151 lpfc_rcv_logo_plogi_issue, /* RCV_LOGO */ 2152 lpfc_rcv_els_plogi_issue, /* RCV_ADISC */ 2153 lpfc_rcv_els_plogi_issue, /* RCV_PDISC */ 2154 lpfc_rcv_els_plogi_issue, /* RCV_PRLO */ 2155 lpfc_cmpl_plogi_plogi_issue, /* CMPL_PLOGI */ 2156 lpfc_disc_illegal, /* CMPL_PRLI */ 2157 lpfc_cmpl_logo_plogi_issue, /* CMPL_LOGO */ 2158 lpfc_disc_illegal, /* CMPL_ADISC */ 2159 lpfc_cmpl_reglogin_plogi_issue,/* CMPL_REG_LOGIN */ 2160 lpfc_device_rm_plogi_issue, /* DEVICE_RM */ 2161 lpfc_device_recov_plogi_issue, /* DEVICE_RECOVERY */ 2162 2163 lpfc_rcv_plogi_adisc_issue, /* RCV_PLOGI ADISC_ISSUE */ 2164 lpfc_rcv_prli_adisc_issue, /* RCV_PRLI */ 2165 lpfc_rcv_logo_adisc_issue, /* RCV_LOGO */ 2166 lpfc_rcv_padisc_adisc_issue, /* RCV_ADISC */ 2167 lpfc_rcv_padisc_adisc_issue, /* RCV_PDISC */ 2168 lpfc_rcv_prlo_adisc_issue, /* RCV_PRLO */ 2169 lpfc_disc_illegal, /* CMPL_PLOGI */ 2170 lpfc_disc_illegal, /* CMPL_PRLI */ 2171 lpfc_disc_illegal, /* CMPL_LOGO */ 2172 lpfc_cmpl_adisc_adisc_issue, /* CMPL_ADISC */ 2173 lpfc_disc_illegal, /* CMPL_REG_LOGIN */ 2174 lpfc_device_rm_adisc_issue, /* DEVICE_RM */ 2175 lpfc_device_recov_adisc_issue, /* DEVICE_RECOVERY */ 2176 2177 lpfc_rcv_plogi_reglogin_issue, /* RCV_PLOGI REG_LOGIN_ISSUE */ 2178 lpfc_rcv_prli_reglogin_issue, /* RCV_PLOGI */ 2179 lpfc_rcv_logo_reglogin_issue, /* RCV_LOGO */ 2180 lpfc_rcv_padisc_reglogin_issue, /* RCV_ADISC */ 2181 lpfc_rcv_padisc_reglogin_issue, /* RCV_PDISC */ 2182 lpfc_rcv_prlo_reglogin_issue, /* RCV_PRLO */ 2183 lpfc_cmpl_plogi_illegal, /* CMPL_PLOGI */ 2184 lpfc_disc_illegal, /* CMPL_PRLI */ 2185 lpfc_disc_illegal, /* CMPL_LOGO */ 2186 lpfc_disc_illegal, /* CMPL_ADISC */ 2187 lpfc_cmpl_reglogin_reglogin_issue,/* CMPL_REG_LOGIN */ 2188 lpfc_device_rm_reglogin_issue, /* DEVICE_RM */ 2189 lpfc_device_recov_reglogin_issue,/* DEVICE_RECOVERY */ 2190 2191 lpfc_rcv_plogi_prli_issue, /* RCV_PLOGI PRLI_ISSUE */ 2192 lpfc_rcv_prli_prli_issue, /* RCV_PRLI */ 2193 lpfc_rcv_logo_prli_issue, /* RCV_LOGO */ 2194 lpfc_rcv_padisc_prli_issue, /* RCV_ADISC */ 2195 lpfc_rcv_padisc_prli_issue, /* RCV_PDISC */ 2196 lpfc_rcv_prlo_prli_issue, /* RCV_PRLO */ 2197 lpfc_cmpl_plogi_illegal, /* CMPL_PLOGI */ 2198 lpfc_cmpl_prli_prli_issue, /* CMPL_PRLI */ 2199 lpfc_disc_illegal, /* CMPL_LOGO */ 2200 lpfc_disc_illegal, /* CMPL_ADISC */ 2201 lpfc_disc_illegal, /* CMPL_REG_LOGIN */ 2202 lpfc_device_rm_prli_issue, /* DEVICE_RM */ 2203 lpfc_device_recov_prli_issue, /* DEVICE_RECOVERY */ 2204 2205 lpfc_rcv_plogi_unmap_node, /* RCV_PLOGI UNMAPPED_NODE */ 2206 lpfc_rcv_prli_unmap_node, /* RCV_PRLI */ 2207 lpfc_rcv_logo_unmap_node, /* RCV_LOGO */ 2208 lpfc_rcv_padisc_unmap_node, /* RCV_ADISC */ 2209 lpfc_rcv_padisc_unmap_node, /* RCV_PDISC */ 2210 lpfc_rcv_prlo_unmap_node, /* RCV_PRLO */ 2211 lpfc_disc_illegal, /* CMPL_PLOGI */ 2212 lpfc_disc_illegal, /* CMPL_PRLI */ 2213 lpfc_disc_illegal, /* CMPL_LOGO */ 2214 lpfc_disc_illegal, /* CMPL_ADISC */ 2215 lpfc_disc_illegal, /* CMPL_REG_LOGIN */ 2216 lpfc_disc_illegal, /* DEVICE_RM */ 2217 lpfc_device_recov_unmap_node, /* DEVICE_RECOVERY */ 2218 2219 lpfc_rcv_plogi_mapped_node, /* RCV_PLOGI MAPPED_NODE */ 2220 lpfc_rcv_prli_mapped_node, /* RCV_PRLI */ 2221 lpfc_rcv_logo_mapped_node, /* RCV_LOGO */ 2222 lpfc_rcv_padisc_mapped_node, /* RCV_ADISC */ 2223 lpfc_rcv_padisc_mapped_node, /* RCV_PDISC */ 2224 lpfc_rcv_prlo_mapped_node, /* RCV_PRLO */ 2225 lpfc_disc_illegal, /* CMPL_PLOGI */ 2226 lpfc_disc_illegal, /* CMPL_PRLI */ 2227 lpfc_disc_illegal, /* CMPL_LOGO */ 2228 lpfc_disc_illegal, /* CMPL_ADISC */ 2229 lpfc_disc_illegal, /* CMPL_REG_LOGIN */ 2230 lpfc_disc_illegal, /* DEVICE_RM */ 2231 lpfc_device_recov_mapped_node, /* DEVICE_RECOVERY */ 2232 2233 lpfc_rcv_plogi_npr_node, /* RCV_PLOGI NPR_NODE */ 2234 lpfc_rcv_prli_npr_node, /* RCV_PRLI */ 2235 lpfc_rcv_logo_npr_node, /* RCV_LOGO */ 2236 lpfc_rcv_padisc_npr_node, /* RCV_ADISC */ 2237 lpfc_rcv_padisc_npr_node, /* RCV_PDISC */ 2238 lpfc_rcv_prlo_npr_node, /* RCV_PRLO */ 2239 lpfc_cmpl_plogi_npr_node, /* CMPL_PLOGI */ 2240 lpfc_cmpl_prli_npr_node, /* CMPL_PRLI */ 2241 lpfc_cmpl_logo_npr_node, /* CMPL_LOGO */ 2242 lpfc_cmpl_adisc_npr_node, /* CMPL_ADISC */ 2243 lpfc_cmpl_reglogin_npr_node, /* CMPL_REG_LOGIN */ 2244 lpfc_device_rm_npr_node, /* DEVICE_RM */ 2245 lpfc_device_recov_npr_node, /* DEVICE_RECOVERY */ 2246}; 2247 2248int 2249lpfc_disc_state_machine(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 2250 void *arg, uint32_t evt) 2251{ 2252 uint32_t cur_state, rc; 2253 uint32_t(*func) (struct lpfc_vport *, struct lpfc_nodelist *, void *, 2254 uint32_t); 2255 uint32_t got_ndlp = 0; 2256 2257 if (lpfc_nlp_get(ndlp)) 2258 got_ndlp = 1; 2259 2260 cur_state = ndlp->nlp_state; 2261 2262 /* DSM in event <evt> on NPort <nlp_DID> in state <cur_state> */ 2263 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, 2264 "0211 DSM in event x%x on NPort x%x in " 2265 "state %d Data: x%x\n", 2266 evt, ndlp->nlp_DID, cur_state, ndlp->nlp_flag); 2267 2268 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_DSM, 2269 "DSM in: evt:%d ste:%d did:x%x", 2270 evt, cur_state, ndlp->nlp_DID); 2271 2272 func = lpfc_disc_action[(cur_state * NLP_EVT_MAX_EVENT) + evt]; 2273 rc = (func) (vport, ndlp, arg, evt); 2274 2275 /* DSM out state <rc> on NPort <nlp_DID> */ 2276 if (got_ndlp) { 2277 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, 2278 "0212 DSM out state %d on NPort x%x Data: x%x\n", 2279 rc, ndlp->nlp_DID, ndlp->nlp_flag); 2280 2281 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_DSM, 2282 "DSM out: ste:%d did:x%x flg:x%x", 2283 rc, ndlp->nlp_DID, ndlp->nlp_flag); 2284 /* Decrement the ndlp reference count held for this function */ 2285 lpfc_nlp_put(ndlp); 2286 } else { 2287 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, 2288 "0213 DSM out state %d on NPort free\n", rc); 2289 2290 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_DSM, 2291 "DSM out: ste:%d did:x%x flg:x%x", 2292 rc, 0, 0); 2293 } 2294 2295 return rc; 2296} 2297