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. */ 47 static int 48 lpfc_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 64 int 65 lpfc_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; 146 bad_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 } 158 159 static void * 160 lpfc_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 */ 199 int 200 lpfc_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 } 256 257 static int 258 lpfc_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, ndlp->nlp_rpi); 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; 441 out: 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 } 447 448 static int 449 lpfc_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 } 504 505 static int 506 lpfc_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 } 575 out: 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 } 589 590 static void 591 lpfc_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 } 629 630 static uint32_t 631 lpfc_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_REGISTERED)) { 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 /** 657 * lpfc_release_rpi - Release a RPI by issuing unreg_login mailbox cmd. 658 * @phba : Pointer to lpfc_hba structure. 659 * @vport: Pointer to lpfc_vport structure. 660 * @rpi : rpi to be release. 661 * 662 * This function will send a unreg_login mailbox command to the firmware 663 * to release a rpi. 664 **/ 665 void 666 lpfc_release_rpi(struct lpfc_hba *phba, 667 struct lpfc_vport *vport, 668 uint16_t rpi) 669 { 670 LPFC_MBOXQ_t *pmb; 671 int rc; 672 673 pmb = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool, 674 GFP_KERNEL); 675 if (!pmb) 676 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX, 677 "2796 mailbox memory allocation failed \n"); 678 else { 679 lpfc_unreg_login(phba, vport->vpi, rpi, pmb); 680 pmb->mbox_cmpl = lpfc_sli_def_mbox_cmpl; 681 rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT); 682 if (rc == MBX_NOT_FINISHED) 683 mempool_free(pmb, phba->mbox_mem_pool); 684 } 685 } 686 687 static uint32_t 688 lpfc_disc_illegal(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 689 void *arg, uint32_t evt) 690 { 691 struct lpfc_hba *phba; 692 LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg; 693 MAILBOX_t *mb; 694 uint16_t rpi; 695 696 phba = vport->phba; 697 /* Release the RPI if reglogin completing */ 698 if (!(phba->pport->load_flag & FC_UNLOADING) && 699 (evt == NLP_EVT_CMPL_REG_LOGIN) && 700 (!pmb->u.mb.mbxStatus)) { 701 mb = &pmb->u.mb; 702 rpi = pmb->u.mb.un.varWords[0]; 703 lpfc_release_rpi(phba, vport, rpi); 704 } 705 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY, 706 "0271 Illegal State Transition: node x%x " 707 "event x%x, state x%x Data: x%x x%x\n", 708 ndlp->nlp_DID, evt, ndlp->nlp_state, ndlp->nlp_rpi, 709 ndlp->nlp_flag); 710 return ndlp->nlp_state; 711 } 712 713 static uint32_t 714 lpfc_cmpl_plogi_illegal(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 715 void *arg, uint32_t evt) 716 { 717 /* This transition is only legal if we previously 718 * rcv'ed a PLOGI. Since we don't want 2 discovery threads 719 * working on the same NPortID, do nothing for this thread 720 * to stop it. 721 */ 722 if (!(ndlp->nlp_flag & NLP_RCV_PLOGI)) { 723 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY, 724 "0272 Illegal State Transition: node x%x " 725 "event x%x, state x%x Data: x%x x%x\n", 726 ndlp->nlp_DID, evt, ndlp->nlp_state, ndlp->nlp_rpi, 727 ndlp->nlp_flag); 728 } 729 return ndlp->nlp_state; 730 } 731 732 /* Start of Discovery State Machine routines */ 733 734 static uint32_t 735 lpfc_rcv_plogi_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 736 void *arg, uint32_t evt) 737 { 738 struct lpfc_iocbq *cmdiocb; 739 740 cmdiocb = (struct lpfc_iocbq *) arg; 741 742 if (lpfc_rcv_plogi(vport, ndlp, cmdiocb)) { 743 return ndlp->nlp_state; 744 } 745 return NLP_STE_FREED_NODE; 746 } 747 748 static uint32_t 749 lpfc_rcv_els_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 750 void *arg, uint32_t evt) 751 { 752 lpfc_issue_els_logo(vport, ndlp, 0); 753 return ndlp->nlp_state; 754 } 755 756 static uint32_t 757 lpfc_rcv_logo_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 758 void *arg, uint32_t evt) 759 { 760 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 761 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg; 762 763 spin_lock_irq(shost->host_lock); 764 ndlp->nlp_flag |= NLP_LOGO_ACC; 765 spin_unlock_irq(shost->host_lock); 766 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL); 767 768 return ndlp->nlp_state; 769 } 770 771 static uint32_t 772 lpfc_cmpl_logo_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 773 void *arg, uint32_t evt) 774 { 775 return NLP_STE_FREED_NODE; 776 } 777 778 static uint32_t 779 lpfc_device_rm_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 780 void *arg, uint32_t evt) 781 { 782 return NLP_STE_FREED_NODE; 783 } 784 785 static uint32_t 786 lpfc_rcv_plogi_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 787 void *arg, uint32_t evt) 788 { 789 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 790 struct lpfc_hba *phba = vport->phba; 791 struct lpfc_iocbq *cmdiocb = arg; 792 struct lpfc_dmabuf *pcmd = (struct lpfc_dmabuf *) cmdiocb->context2; 793 uint32_t *lp = (uint32_t *) pcmd->virt; 794 struct serv_parm *sp = (struct serv_parm *) (lp + 1); 795 struct ls_rjt stat; 796 int port_cmp; 797 798 memset(&stat, 0, sizeof (struct ls_rjt)); 799 800 /* For a PLOGI, we only accept if our portname is less 801 * than the remote portname. 802 */ 803 phba->fc_stat.elsLogiCol++; 804 port_cmp = memcmp(&vport->fc_portname, &sp->portName, 805 sizeof(struct lpfc_name)); 806 807 if (port_cmp >= 0) { 808 /* Reject this request because the remote node will accept 809 ours */ 810 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC; 811 stat.un.b.lsRjtRsnCodeExp = LSEXP_CMD_IN_PROGRESS; 812 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, 813 NULL); 814 } else { 815 if (lpfc_rcv_plogi(vport, ndlp, cmdiocb) && 816 (ndlp->nlp_flag & NLP_NPR_2B_DISC) && 817 (vport->num_disc_nodes)) { 818 spin_lock_irq(shost->host_lock); 819 ndlp->nlp_flag &= ~NLP_NPR_2B_DISC; 820 spin_unlock_irq(shost->host_lock); 821 /* Check if there are more PLOGIs to be sent */ 822 lpfc_more_plogi(vport); 823 if (vport->num_disc_nodes == 0) { 824 spin_lock_irq(shost->host_lock); 825 vport->fc_flag &= ~FC_NDISC_ACTIVE; 826 spin_unlock_irq(shost->host_lock); 827 lpfc_can_disctmo(vport); 828 lpfc_end_rscn(vport); 829 } 830 } 831 } /* If our portname was less */ 832 833 return ndlp->nlp_state; 834 } 835 836 static uint32_t 837 lpfc_rcv_prli_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 838 void *arg, uint32_t evt) 839 { 840 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg; 841 struct ls_rjt stat; 842 843 memset(&stat, 0, sizeof (struct ls_rjt)); 844 stat.un.b.lsRjtRsnCode = LSRJT_LOGICAL_BSY; 845 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE; 846 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL); 847 return ndlp->nlp_state; 848 } 849 850 static uint32_t 851 lpfc_rcv_logo_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 852 void *arg, uint32_t evt) 853 { 854 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg; 855 856 /* software abort outstanding PLOGI */ 857 lpfc_els_abort(vport->phba, ndlp); 858 859 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO); 860 return ndlp->nlp_state; 861 } 862 863 static uint32_t 864 lpfc_rcv_els_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 865 void *arg, uint32_t evt) 866 { 867 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 868 struct lpfc_hba *phba = vport->phba; 869 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg; 870 871 /* software abort outstanding PLOGI */ 872 lpfc_els_abort(phba, ndlp); 873 874 if (evt == NLP_EVT_RCV_LOGO) { 875 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL); 876 } else { 877 lpfc_issue_els_logo(vport, ndlp, 0); 878 } 879 880 /* Put ndlp in npr state set plogi timer for 1 sec */ 881 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ * 1); 882 spin_lock_irq(shost->host_lock); 883 ndlp->nlp_flag |= NLP_DELAY_TMO; 884 spin_unlock_irq(shost->host_lock); 885 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI; 886 ndlp->nlp_prev_state = NLP_STE_PLOGI_ISSUE; 887 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE); 888 889 return ndlp->nlp_state; 890 } 891 892 static uint32_t 893 lpfc_cmpl_plogi_plogi_issue(struct lpfc_vport *vport, 894 struct lpfc_nodelist *ndlp, 895 void *arg, 896 uint32_t evt) 897 { 898 struct lpfc_hba *phba = vport->phba; 899 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 900 struct lpfc_iocbq *cmdiocb, *rspiocb; 901 struct lpfc_dmabuf *pcmd, *prsp, *mp; 902 uint32_t *lp; 903 IOCB_t *irsp; 904 struct serv_parm *sp; 905 LPFC_MBOXQ_t *mbox; 906 907 cmdiocb = (struct lpfc_iocbq *) arg; 908 rspiocb = cmdiocb->context_un.rsp_iocb; 909 910 if (ndlp->nlp_flag & NLP_ACC_REGLOGIN) { 911 /* Recovery from PLOGI collision logic */ 912 return ndlp->nlp_state; 913 } 914 915 irsp = &rspiocb->iocb; 916 917 if (irsp->ulpStatus) 918 goto out; 919 920 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2; 921 922 prsp = list_get_first(&pcmd->list, struct lpfc_dmabuf, list); 923 924 lp = (uint32_t *) prsp->virt; 925 sp = (struct serv_parm *) ((uint8_t *) lp + sizeof (uint32_t)); 926 927 /* Some switches have FDMI servers returning 0 for WWN */ 928 if ((ndlp->nlp_DID != FDMI_DID) && 929 (wwn_to_u64(sp->portName.u.wwn) == 0 || 930 wwn_to_u64(sp->nodeName.u.wwn) == 0)) { 931 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS, 932 "0142 PLOGI RSP: Invalid WWN.\n"); 933 goto out; 934 } 935 if (!lpfc_check_sparm(vport, ndlp, sp, CLASS3, 0)) 936 goto out; 937 /* PLOGI chkparm OK */ 938 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, 939 "0121 PLOGI chkparm OK Data: x%x x%x x%x x%x\n", 940 ndlp->nlp_DID, ndlp->nlp_state, 941 ndlp->nlp_flag, ndlp->nlp_rpi); 942 if (vport->cfg_fcp_class == 2 && (sp->cls2.classValid)) 943 ndlp->nlp_fcp_info |= CLASS2; 944 else 945 ndlp->nlp_fcp_info |= CLASS3; 946 947 ndlp->nlp_class_sup = 0; 948 if (sp->cls1.classValid) 949 ndlp->nlp_class_sup |= FC_COS_CLASS1; 950 if (sp->cls2.classValid) 951 ndlp->nlp_class_sup |= FC_COS_CLASS2; 952 if (sp->cls3.classValid) 953 ndlp->nlp_class_sup |= FC_COS_CLASS3; 954 if (sp->cls4.classValid) 955 ndlp->nlp_class_sup |= FC_COS_CLASS4; 956 ndlp->nlp_maxframe = 957 ((sp->cmn.bbRcvSizeMsb & 0x0F) << 8) | sp->cmn.bbRcvSizeLsb; 958 959 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 960 if (!mbox) { 961 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS, 962 "0133 PLOGI: no memory for reg_login " 963 "Data: x%x x%x x%x x%x\n", 964 ndlp->nlp_DID, ndlp->nlp_state, 965 ndlp->nlp_flag, ndlp->nlp_rpi); 966 goto out; 967 } 968 969 lpfc_unreg_rpi(vport, ndlp); 970 971 if (lpfc_reg_rpi(phba, vport->vpi, irsp->un.elsreq64.remoteID, 972 (uint8_t *) sp, mbox, ndlp->nlp_rpi) == 0) { 973 switch (ndlp->nlp_DID) { 974 case NameServer_DID: 975 mbox->mbox_cmpl = lpfc_mbx_cmpl_ns_reg_login; 976 break; 977 case FDMI_DID: 978 mbox->mbox_cmpl = lpfc_mbx_cmpl_fdmi_reg_login; 979 break; 980 default: 981 ndlp->nlp_flag |= NLP_REG_LOGIN_SEND; 982 mbox->mbox_cmpl = lpfc_mbx_cmpl_reg_login; 983 } 984 mbox->context2 = lpfc_nlp_get(ndlp); 985 mbox->vport = vport; 986 if (lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT) 987 != MBX_NOT_FINISHED) { 988 lpfc_nlp_set_state(vport, ndlp, 989 NLP_STE_REG_LOGIN_ISSUE); 990 return ndlp->nlp_state; 991 } 992 if (ndlp->nlp_flag & NLP_REG_LOGIN_SEND) 993 ndlp->nlp_flag &= ~NLP_REG_LOGIN_SEND; 994 /* decrement node reference count to the failed mbox 995 * command 996 */ 997 lpfc_nlp_put(ndlp); 998 mp = (struct lpfc_dmabuf *) mbox->context1; 999 lpfc_mbuf_free(phba, mp->virt, mp->phys); 1000 kfree(mp); 1001 mempool_free(mbox, phba->mbox_mem_pool); 1002 1003 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS, 1004 "0134 PLOGI: cannot issue reg_login " 1005 "Data: x%x x%x x%x x%x\n", 1006 ndlp->nlp_DID, ndlp->nlp_state, 1007 ndlp->nlp_flag, ndlp->nlp_rpi); 1008 } else { 1009 mempool_free(mbox, phba->mbox_mem_pool); 1010 1011 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS, 1012 "0135 PLOGI: cannot format reg_login " 1013 "Data: x%x x%x x%x x%x\n", 1014 ndlp->nlp_DID, ndlp->nlp_state, 1015 ndlp->nlp_flag, ndlp->nlp_rpi); 1016 } 1017 1018 1019 out: 1020 if (ndlp->nlp_DID == NameServer_DID) { 1021 lpfc_vport_set_state(vport, FC_VPORT_FAILED); 1022 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS, 1023 "0261 Cannot Register NameServer login\n"); 1024 } 1025 1026 spin_lock_irq(shost->host_lock); 1027 ndlp->nlp_flag |= NLP_DEFER_RM; 1028 spin_unlock_irq(shost->host_lock); 1029 return NLP_STE_FREED_NODE; 1030 } 1031 1032 static uint32_t 1033 lpfc_cmpl_logo_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 1034 void *arg, uint32_t evt) 1035 { 1036 return ndlp->nlp_state; 1037 } 1038 1039 static uint32_t 1040 lpfc_cmpl_reglogin_plogi_issue(struct lpfc_vport *vport, 1041 struct lpfc_nodelist *ndlp, void *arg, uint32_t evt) 1042 { 1043 struct lpfc_hba *phba; 1044 LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg; 1045 MAILBOX_t *mb = &pmb->u.mb; 1046 uint16_t rpi; 1047 1048 phba = vport->phba; 1049 /* Release the RPI */ 1050 if (!(phba->pport->load_flag & FC_UNLOADING) && 1051 !mb->mbxStatus) { 1052 rpi = pmb->u.mb.un.varWords[0]; 1053 lpfc_release_rpi(phba, vport, rpi); 1054 } 1055 return ndlp->nlp_state; 1056 } 1057 1058 static uint32_t 1059 lpfc_device_rm_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 1060 void *arg, uint32_t evt) 1061 { 1062 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 1063 1064 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) { 1065 spin_lock_irq(shost->host_lock); 1066 ndlp->nlp_flag |= NLP_NODEV_REMOVE; 1067 spin_unlock_irq(shost->host_lock); 1068 return ndlp->nlp_state; 1069 } else { 1070 /* software abort outstanding PLOGI */ 1071 lpfc_els_abort(vport->phba, ndlp); 1072 1073 lpfc_drop_node(vport, ndlp); 1074 return NLP_STE_FREED_NODE; 1075 } 1076 } 1077 1078 static uint32_t 1079 lpfc_device_recov_plogi_issue(struct lpfc_vport *vport, 1080 struct lpfc_nodelist *ndlp, 1081 void *arg, 1082 uint32_t evt) 1083 { 1084 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 1085 struct lpfc_hba *phba = vport->phba; 1086 1087 /* Don't do anything that will mess up processing of the 1088 * previous RSCN. 1089 */ 1090 if (vport->fc_flag & FC_RSCN_DEFERRED) 1091 return ndlp->nlp_state; 1092 1093 /* software abort outstanding PLOGI */ 1094 lpfc_els_abort(phba, ndlp); 1095 1096 ndlp->nlp_prev_state = NLP_STE_PLOGI_ISSUE; 1097 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE); 1098 spin_lock_irq(shost->host_lock); 1099 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC); 1100 spin_unlock_irq(shost->host_lock); 1101 1102 return ndlp->nlp_state; 1103 } 1104 1105 static uint32_t 1106 lpfc_rcv_plogi_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 1107 void *arg, uint32_t evt) 1108 { 1109 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 1110 struct lpfc_hba *phba = vport->phba; 1111 struct lpfc_iocbq *cmdiocb; 1112 1113 /* software abort outstanding ADISC */ 1114 lpfc_els_abort(phba, ndlp); 1115 1116 cmdiocb = (struct lpfc_iocbq *) arg; 1117 1118 if (lpfc_rcv_plogi(vport, ndlp, cmdiocb)) { 1119 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) { 1120 spin_lock_irq(shost->host_lock); 1121 ndlp->nlp_flag &= ~NLP_NPR_2B_DISC; 1122 spin_unlock_irq(shost->host_lock); 1123 if (vport->num_disc_nodes) 1124 lpfc_more_adisc(vport); 1125 } 1126 return ndlp->nlp_state; 1127 } 1128 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE; 1129 lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0); 1130 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE); 1131 1132 return ndlp->nlp_state; 1133 } 1134 1135 static uint32_t 1136 lpfc_rcv_prli_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 1137 void *arg, uint32_t evt) 1138 { 1139 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg; 1140 1141 lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp); 1142 return ndlp->nlp_state; 1143 } 1144 1145 static uint32_t 1146 lpfc_rcv_logo_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 1147 void *arg, uint32_t evt) 1148 { 1149 struct lpfc_hba *phba = vport->phba; 1150 struct lpfc_iocbq *cmdiocb; 1151 1152 cmdiocb = (struct lpfc_iocbq *) arg; 1153 1154 /* software abort outstanding ADISC */ 1155 lpfc_els_abort(phba, ndlp); 1156 1157 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO); 1158 return ndlp->nlp_state; 1159 } 1160 1161 static uint32_t 1162 lpfc_rcv_padisc_adisc_issue(struct lpfc_vport *vport, 1163 struct lpfc_nodelist *ndlp, 1164 void *arg, uint32_t evt) 1165 { 1166 struct lpfc_iocbq *cmdiocb; 1167 1168 cmdiocb = (struct lpfc_iocbq *) arg; 1169 1170 lpfc_rcv_padisc(vport, ndlp, cmdiocb); 1171 return ndlp->nlp_state; 1172 } 1173 1174 static uint32_t 1175 lpfc_rcv_prlo_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 1176 void *arg, uint32_t evt) 1177 { 1178 struct lpfc_iocbq *cmdiocb; 1179 1180 cmdiocb = (struct lpfc_iocbq *) arg; 1181 1182 /* Treat like rcv logo */ 1183 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_PRLO); 1184 return ndlp->nlp_state; 1185 } 1186 1187 static uint32_t 1188 lpfc_cmpl_adisc_adisc_issue(struct lpfc_vport *vport, 1189 struct lpfc_nodelist *ndlp, 1190 void *arg, uint32_t evt) 1191 { 1192 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 1193 struct lpfc_hba *phba = vport->phba; 1194 struct lpfc_iocbq *cmdiocb, *rspiocb; 1195 IOCB_t *irsp; 1196 ADISC *ap; 1197 int rc; 1198 1199 cmdiocb = (struct lpfc_iocbq *) arg; 1200 rspiocb = cmdiocb->context_un.rsp_iocb; 1201 1202 ap = (ADISC *)lpfc_check_elscmpl_iocb(phba, cmdiocb, rspiocb); 1203 irsp = &rspiocb->iocb; 1204 1205 if ((irsp->ulpStatus) || 1206 (!lpfc_check_adisc(vport, ndlp, &ap->nodeName, &ap->portName))) { 1207 /* 1 sec timeout */ 1208 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ); 1209 spin_lock_irq(shost->host_lock); 1210 ndlp->nlp_flag |= NLP_DELAY_TMO; 1211 spin_unlock_irq(shost->host_lock); 1212 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI; 1213 1214 memset(&ndlp->nlp_nodename, 0, sizeof(struct lpfc_name)); 1215 memset(&ndlp->nlp_portname, 0, sizeof(struct lpfc_name)); 1216 1217 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE; 1218 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE); 1219 lpfc_unreg_rpi(vport, ndlp); 1220 return ndlp->nlp_state; 1221 } 1222 1223 if (phba->sli_rev == LPFC_SLI_REV4) { 1224 rc = lpfc_sli4_resume_rpi(ndlp); 1225 if (rc) { 1226 /* Stay in state and retry. */ 1227 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE; 1228 return ndlp->nlp_state; 1229 } 1230 } 1231 1232 if (ndlp->nlp_type & NLP_FCP_TARGET) { 1233 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE; 1234 lpfc_nlp_set_state(vport, ndlp, NLP_STE_MAPPED_NODE); 1235 } else { 1236 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE; 1237 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE); 1238 } 1239 1240 return ndlp->nlp_state; 1241 } 1242 1243 static uint32_t 1244 lpfc_device_rm_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 1245 void *arg, uint32_t evt) 1246 { 1247 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 1248 1249 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) { 1250 spin_lock_irq(shost->host_lock); 1251 ndlp->nlp_flag |= NLP_NODEV_REMOVE; 1252 spin_unlock_irq(shost->host_lock); 1253 return ndlp->nlp_state; 1254 } else { 1255 /* software abort outstanding ADISC */ 1256 lpfc_els_abort(vport->phba, ndlp); 1257 1258 lpfc_drop_node(vport, ndlp); 1259 return NLP_STE_FREED_NODE; 1260 } 1261 } 1262 1263 static uint32_t 1264 lpfc_device_recov_adisc_issue(struct lpfc_vport *vport, 1265 struct lpfc_nodelist *ndlp, 1266 void *arg, 1267 uint32_t evt) 1268 { 1269 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 1270 struct lpfc_hba *phba = vport->phba; 1271 1272 /* Don't do anything that will mess up processing of the 1273 * previous RSCN. 1274 */ 1275 if (vport->fc_flag & FC_RSCN_DEFERRED) 1276 return ndlp->nlp_state; 1277 1278 /* software abort outstanding ADISC */ 1279 lpfc_els_abort(phba, ndlp); 1280 1281 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE; 1282 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE); 1283 spin_lock_irq(shost->host_lock); 1284 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC); 1285 spin_unlock_irq(shost->host_lock); 1286 lpfc_disc_set_adisc(vport, ndlp); 1287 return ndlp->nlp_state; 1288 } 1289 1290 static uint32_t 1291 lpfc_rcv_plogi_reglogin_issue(struct lpfc_vport *vport, 1292 struct lpfc_nodelist *ndlp, 1293 void *arg, 1294 uint32_t evt) 1295 { 1296 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg; 1297 1298 lpfc_rcv_plogi(vport, ndlp, cmdiocb); 1299 return ndlp->nlp_state; 1300 } 1301 1302 static uint32_t 1303 lpfc_rcv_prli_reglogin_issue(struct lpfc_vport *vport, 1304 struct lpfc_nodelist *ndlp, 1305 void *arg, 1306 uint32_t evt) 1307 { 1308 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg; 1309 1310 lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp); 1311 return ndlp->nlp_state; 1312 } 1313 1314 static uint32_t 1315 lpfc_rcv_logo_reglogin_issue(struct lpfc_vport *vport, 1316 struct lpfc_nodelist *ndlp, 1317 void *arg, 1318 uint32_t evt) 1319 { 1320 struct lpfc_hba *phba = vport->phba; 1321 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg; 1322 LPFC_MBOXQ_t *mb; 1323 LPFC_MBOXQ_t *nextmb; 1324 struct lpfc_dmabuf *mp; 1325 1326 cmdiocb = (struct lpfc_iocbq *) arg; 1327 1328 /* cleanup any ndlp on mbox q waiting for reglogin cmpl */ 1329 if ((mb = phba->sli.mbox_active)) { 1330 if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) && 1331 (ndlp == (struct lpfc_nodelist *) mb->context2)) { 1332 lpfc_nlp_put(ndlp); 1333 mb->context2 = NULL; 1334 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl; 1335 } 1336 } 1337 1338 spin_lock_irq(&phba->hbalock); 1339 list_for_each_entry_safe(mb, nextmb, &phba->sli.mboxq, list) { 1340 if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) && 1341 (ndlp == (struct lpfc_nodelist *) mb->context2)) { 1342 mp = (struct lpfc_dmabuf *) (mb->context1); 1343 if (mp) { 1344 __lpfc_mbuf_free(phba, mp->virt, mp->phys); 1345 kfree(mp); 1346 } 1347 lpfc_nlp_put(ndlp); 1348 list_del(&mb->list); 1349 phba->sli.mboxq_cnt--; 1350 mempool_free(mb, phba->mbox_mem_pool); 1351 } 1352 } 1353 spin_unlock_irq(&phba->hbalock); 1354 1355 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO); 1356 return ndlp->nlp_state; 1357 } 1358 1359 static uint32_t 1360 lpfc_rcv_padisc_reglogin_issue(struct lpfc_vport *vport, 1361 struct lpfc_nodelist *ndlp, 1362 void *arg, 1363 uint32_t evt) 1364 { 1365 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg; 1366 1367 lpfc_rcv_padisc(vport, ndlp, cmdiocb); 1368 return ndlp->nlp_state; 1369 } 1370 1371 static uint32_t 1372 lpfc_rcv_prlo_reglogin_issue(struct lpfc_vport *vport, 1373 struct lpfc_nodelist *ndlp, 1374 void *arg, 1375 uint32_t evt) 1376 { 1377 struct lpfc_iocbq *cmdiocb; 1378 1379 cmdiocb = (struct lpfc_iocbq *) arg; 1380 lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL); 1381 return ndlp->nlp_state; 1382 } 1383 1384 static uint32_t 1385 lpfc_cmpl_reglogin_reglogin_issue(struct lpfc_vport *vport, 1386 struct lpfc_nodelist *ndlp, 1387 void *arg, 1388 uint32_t evt) 1389 { 1390 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 1391 LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg; 1392 MAILBOX_t *mb = &pmb->u.mb; 1393 uint32_t did = mb->un.varWords[1]; 1394 1395 if (mb->mbxStatus) { 1396 /* RegLogin failed */ 1397 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY, 1398 "0246 RegLogin failed Data: x%x x%x x%x x%x " 1399 "x%x\n", 1400 did, mb->mbxStatus, vport->port_state, 1401 mb->un.varRegLogin.vpi, 1402 mb->un.varRegLogin.rpi); 1403 /* 1404 * If RegLogin failed due to lack of HBA resources do not 1405 * retry discovery. 1406 */ 1407 if (mb->mbxStatus == MBXERR_RPI_FULL) { 1408 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE; 1409 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE); 1410 return ndlp->nlp_state; 1411 } 1412 1413 /* Put ndlp in npr state set plogi timer for 1 sec */ 1414 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ * 1); 1415 spin_lock_irq(shost->host_lock); 1416 ndlp->nlp_flag |= NLP_DELAY_TMO; 1417 spin_unlock_irq(shost->host_lock); 1418 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI; 1419 1420 lpfc_issue_els_logo(vport, ndlp, 0); 1421 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE; 1422 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE); 1423 return ndlp->nlp_state; 1424 } 1425 1426 /* SLI4 ports have preallocated logical rpis. */ 1427 if (vport->phba->sli_rev < LPFC_SLI_REV4) 1428 ndlp->nlp_rpi = mb->un.varWords[0]; 1429 1430 ndlp->nlp_flag |= NLP_RPI_REGISTERED; 1431 1432 /* Only if we are not a fabric nport do we issue PRLI */ 1433 if (!(ndlp->nlp_type & NLP_FABRIC)) { 1434 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE; 1435 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PRLI_ISSUE); 1436 lpfc_issue_els_prli(vport, ndlp, 0); 1437 } else { 1438 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE; 1439 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE); 1440 } 1441 return ndlp->nlp_state; 1442 } 1443 1444 static uint32_t 1445 lpfc_device_rm_reglogin_issue(struct lpfc_vport *vport, 1446 struct lpfc_nodelist *ndlp, 1447 void *arg, 1448 uint32_t evt) 1449 { 1450 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 1451 1452 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) { 1453 spin_lock_irq(shost->host_lock); 1454 ndlp->nlp_flag |= NLP_NODEV_REMOVE; 1455 spin_unlock_irq(shost->host_lock); 1456 return ndlp->nlp_state; 1457 } else { 1458 lpfc_drop_node(vport, ndlp); 1459 return NLP_STE_FREED_NODE; 1460 } 1461 } 1462 1463 static uint32_t 1464 lpfc_device_recov_reglogin_issue(struct lpfc_vport *vport, 1465 struct lpfc_nodelist *ndlp, 1466 void *arg, 1467 uint32_t evt) 1468 { 1469 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 1470 1471 /* Don't do anything that will mess up processing of the 1472 * previous RSCN. 1473 */ 1474 if (vport->fc_flag & FC_RSCN_DEFERRED) 1475 return ndlp->nlp_state; 1476 1477 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE; 1478 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE); 1479 spin_lock_irq(shost->host_lock); 1480 ndlp->nlp_flag |= NLP_IGNR_REG_CMPL; 1481 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC); 1482 spin_unlock_irq(shost->host_lock); 1483 lpfc_disc_set_adisc(vport, ndlp); 1484 return ndlp->nlp_state; 1485 } 1486 1487 static uint32_t 1488 lpfc_rcv_plogi_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 1489 void *arg, uint32_t evt) 1490 { 1491 struct lpfc_iocbq *cmdiocb; 1492 1493 cmdiocb = (struct lpfc_iocbq *) arg; 1494 1495 lpfc_rcv_plogi(vport, ndlp, cmdiocb); 1496 return ndlp->nlp_state; 1497 } 1498 1499 static uint32_t 1500 lpfc_rcv_prli_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 1501 void *arg, uint32_t evt) 1502 { 1503 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg; 1504 1505 lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp); 1506 return ndlp->nlp_state; 1507 } 1508 1509 static uint32_t 1510 lpfc_rcv_logo_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 1511 void *arg, uint32_t evt) 1512 { 1513 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg; 1514 1515 /* Software abort outstanding PRLI before sending acc */ 1516 lpfc_els_abort(vport->phba, ndlp); 1517 1518 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO); 1519 return ndlp->nlp_state; 1520 } 1521 1522 static uint32_t 1523 lpfc_rcv_padisc_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 1524 void *arg, uint32_t evt) 1525 { 1526 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg; 1527 1528 lpfc_rcv_padisc(vport, ndlp, cmdiocb); 1529 return ndlp->nlp_state; 1530 } 1531 1532 /* This routine is envoked when we rcv a PRLO request from a nport 1533 * we are logged into. We should send back a PRLO rsp setting the 1534 * appropriate bits. 1535 * NEXT STATE = PRLI_ISSUE 1536 */ 1537 static uint32_t 1538 lpfc_rcv_prlo_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 1539 void *arg, uint32_t evt) 1540 { 1541 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg; 1542 1543 lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL); 1544 return ndlp->nlp_state; 1545 } 1546 1547 static uint32_t 1548 lpfc_cmpl_prli_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 1549 void *arg, uint32_t evt) 1550 { 1551 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 1552 struct lpfc_iocbq *cmdiocb, *rspiocb; 1553 struct lpfc_hba *phba = vport->phba; 1554 IOCB_t *irsp; 1555 PRLI *npr; 1556 1557 cmdiocb = (struct lpfc_iocbq *) arg; 1558 rspiocb = cmdiocb->context_un.rsp_iocb; 1559 npr = (PRLI *)lpfc_check_elscmpl_iocb(phba, cmdiocb, rspiocb); 1560 1561 irsp = &rspiocb->iocb; 1562 if (irsp->ulpStatus) { 1563 if ((vport->port_type == LPFC_NPIV_PORT) && 1564 vport->cfg_restrict_login) { 1565 goto out; 1566 } 1567 ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE; 1568 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE); 1569 return ndlp->nlp_state; 1570 } 1571 1572 /* Check out PRLI rsp */ 1573 ndlp->nlp_type &= ~(NLP_FCP_TARGET | NLP_FCP_INITIATOR); 1574 ndlp->nlp_fcp_info &= ~NLP_FCP_2_DEVICE; 1575 if ((npr->acceptRspCode == PRLI_REQ_EXECUTED) && 1576 (npr->prliType == PRLI_FCP_TYPE)) { 1577 if (npr->initiatorFunc) 1578 ndlp->nlp_type |= NLP_FCP_INITIATOR; 1579 if (npr->targetFunc) 1580 ndlp->nlp_type |= NLP_FCP_TARGET; 1581 if (npr->Retry) 1582 ndlp->nlp_fcp_info |= NLP_FCP_2_DEVICE; 1583 } 1584 if (!(ndlp->nlp_type & NLP_FCP_TARGET) && 1585 (vport->port_type == LPFC_NPIV_PORT) && 1586 vport->cfg_restrict_login) { 1587 out: 1588 spin_lock_irq(shost->host_lock); 1589 ndlp->nlp_flag |= NLP_TARGET_REMOVE; 1590 spin_unlock_irq(shost->host_lock); 1591 lpfc_issue_els_logo(vport, ndlp, 0); 1592 1593 ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE; 1594 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE); 1595 return ndlp->nlp_state; 1596 } 1597 1598 ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE; 1599 if (ndlp->nlp_type & NLP_FCP_TARGET) 1600 lpfc_nlp_set_state(vport, ndlp, NLP_STE_MAPPED_NODE); 1601 else 1602 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE); 1603 return ndlp->nlp_state; 1604 } 1605 1606 /*! lpfc_device_rm_prli_issue 1607 * 1608 * \pre 1609 * \post 1610 * \param phba 1611 * \param ndlp 1612 * \param arg 1613 * \param evt 1614 * \return uint32_t 1615 * 1616 * \b Description: 1617 * This routine is envoked when we a request to remove a nport we are in the 1618 * process of PRLIing. We should software abort outstanding prli, unreg 1619 * login, send a logout. We will change node state to UNUSED_NODE, put it 1620 * on plogi list so it can be freed when LOGO completes. 1621 * 1622 */ 1623 1624 static uint32_t 1625 lpfc_device_rm_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 1626 void *arg, uint32_t evt) 1627 { 1628 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 1629 1630 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) { 1631 spin_lock_irq(shost->host_lock); 1632 ndlp->nlp_flag |= NLP_NODEV_REMOVE; 1633 spin_unlock_irq(shost->host_lock); 1634 return ndlp->nlp_state; 1635 } else { 1636 /* software abort outstanding PLOGI */ 1637 lpfc_els_abort(vport->phba, ndlp); 1638 1639 lpfc_drop_node(vport, ndlp); 1640 return NLP_STE_FREED_NODE; 1641 } 1642 } 1643 1644 1645 /*! lpfc_device_recov_prli_issue 1646 * 1647 * \pre 1648 * \post 1649 * \param phba 1650 * \param ndlp 1651 * \param arg 1652 * \param evt 1653 * \return uint32_t 1654 * 1655 * \b Description: 1656 * The routine is envoked when the state of a device is unknown, like 1657 * during a link down. We should remove the nodelist entry from the 1658 * unmapped list, issue a UNREG_LOGIN, do a software abort of the 1659 * outstanding PRLI command, then free the node entry. 1660 */ 1661 static uint32_t 1662 lpfc_device_recov_prli_issue(struct lpfc_vport *vport, 1663 struct lpfc_nodelist *ndlp, 1664 void *arg, 1665 uint32_t evt) 1666 { 1667 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 1668 struct lpfc_hba *phba = vport->phba; 1669 1670 /* Don't do anything that will mess up processing of the 1671 * previous RSCN. 1672 */ 1673 if (vport->fc_flag & FC_RSCN_DEFERRED) 1674 return ndlp->nlp_state; 1675 1676 /* software abort outstanding PRLI */ 1677 lpfc_els_abort(phba, ndlp); 1678 1679 ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE; 1680 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE); 1681 spin_lock_irq(shost->host_lock); 1682 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC); 1683 spin_unlock_irq(shost->host_lock); 1684 lpfc_disc_set_adisc(vport, ndlp); 1685 return ndlp->nlp_state; 1686 } 1687 1688 static uint32_t 1689 lpfc_rcv_plogi_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 1690 void *arg, uint32_t evt) 1691 { 1692 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg; 1693 1694 lpfc_rcv_plogi(vport, ndlp, cmdiocb); 1695 return ndlp->nlp_state; 1696 } 1697 1698 static uint32_t 1699 lpfc_rcv_prli_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 1700 void *arg, uint32_t evt) 1701 { 1702 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg; 1703 1704 lpfc_rcv_prli(vport, ndlp, cmdiocb); 1705 lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp); 1706 return ndlp->nlp_state; 1707 } 1708 1709 static uint32_t 1710 lpfc_rcv_logo_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 1711 void *arg, uint32_t evt) 1712 { 1713 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg; 1714 1715 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO); 1716 return ndlp->nlp_state; 1717 } 1718 1719 static uint32_t 1720 lpfc_rcv_padisc_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 1721 void *arg, uint32_t evt) 1722 { 1723 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg; 1724 1725 lpfc_rcv_padisc(vport, ndlp, cmdiocb); 1726 return ndlp->nlp_state; 1727 } 1728 1729 static uint32_t 1730 lpfc_rcv_prlo_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 1731 void *arg, uint32_t evt) 1732 { 1733 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg; 1734 1735 lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL); 1736 return ndlp->nlp_state; 1737 } 1738 1739 static uint32_t 1740 lpfc_device_recov_unmap_node(struct lpfc_vport *vport, 1741 struct lpfc_nodelist *ndlp, 1742 void *arg, 1743 uint32_t evt) 1744 { 1745 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 1746 1747 ndlp->nlp_prev_state = NLP_STE_UNMAPPED_NODE; 1748 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE); 1749 spin_lock_irq(shost->host_lock); 1750 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC); 1751 spin_unlock_irq(shost->host_lock); 1752 lpfc_disc_set_adisc(vport, ndlp); 1753 1754 return ndlp->nlp_state; 1755 } 1756 1757 static uint32_t 1758 lpfc_rcv_plogi_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 1759 void *arg, uint32_t evt) 1760 { 1761 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg; 1762 1763 lpfc_rcv_plogi(vport, ndlp, cmdiocb); 1764 return ndlp->nlp_state; 1765 } 1766 1767 static uint32_t 1768 lpfc_rcv_prli_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 1769 void *arg, uint32_t evt) 1770 { 1771 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg; 1772 1773 lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp); 1774 return ndlp->nlp_state; 1775 } 1776 1777 static uint32_t 1778 lpfc_rcv_logo_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 1779 void *arg, uint32_t evt) 1780 { 1781 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg; 1782 1783 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO); 1784 return ndlp->nlp_state; 1785 } 1786 1787 static uint32_t 1788 lpfc_rcv_padisc_mapped_node(struct lpfc_vport *vport, 1789 struct lpfc_nodelist *ndlp, 1790 void *arg, uint32_t evt) 1791 { 1792 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg; 1793 1794 lpfc_rcv_padisc(vport, ndlp, cmdiocb); 1795 return ndlp->nlp_state; 1796 } 1797 1798 static uint32_t 1799 lpfc_rcv_prlo_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 1800 void *arg, uint32_t evt) 1801 { 1802 struct lpfc_hba *phba = vport->phba; 1803 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg; 1804 1805 /* flush the target */ 1806 lpfc_sli_abort_iocb(vport, &phba->sli.ring[phba->sli.fcp_ring], 1807 ndlp->nlp_sid, 0, LPFC_CTX_TGT); 1808 1809 /* Treat like rcv logo */ 1810 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_PRLO); 1811 return ndlp->nlp_state; 1812 } 1813 1814 static uint32_t 1815 lpfc_device_recov_mapped_node(struct lpfc_vport *vport, 1816 struct lpfc_nodelist *ndlp, 1817 void *arg, 1818 uint32_t evt) 1819 { 1820 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 1821 1822 ndlp->nlp_prev_state = NLP_STE_MAPPED_NODE; 1823 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE); 1824 spin_lock_irq(shost->host_lock); 1825 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC); 1826 spin_unlock_irq(shost->host_lock); 1827 lpfc_disc_set_adisc(vport, ndlp); 1828 return ndlp->nlp_state; 1829 } 1830 1831 static uint32_t 1832 lpfc_rcv_plogi_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 1833 void *arg, uint32_t evt) 1834 { 1835 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 1836 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg; 1837 1838 /* Ignore PLOGI if we have an outstanding LOGO */ 1839 if (ndlp->nlp_flag & (NLP_LOGO_SND | NLP_LOGO_ACC)) 1840 return ndlp->nlp_state; 1841 if (lpfc_rcv_plogi(vport, ndlp, cmdiocb)) { 1842 lpfc_cancel_retry_delay_tmo(vport, ndlp); 1843 spin_lock_irq(shost->host_lock); 1844 ndlp->nlp_flag &= ~(NLP_NPR_ADISC | NLP_NPR_2B_DISC); 1845 spin_unlock_irq(shost->host_lock); 1846 } else if (!(ndlp->nlp_flag & NLP_NPR_2B_DISC)) { 1847 /* send PLOGI immediately, move to PLOGI issue state */ 1848 if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) { 1849 ndlp->nlp_prev_state = NLP_STE_NPR_NODE; 1850 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE); 1851 lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0); 1852 } 1853 } 1854 return ndlp->nlp_state; 1855 } 1856 1857 static uint32_t 1858 lpfc_rcv_prli_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 1859 void *arg, uint32_t evt) 1860 { 1861 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 1862 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg; 1863 struct ls_rjt stat; 1864 1865 memset(&stat, 0, sizeof (struct ls_rjt)); 1866 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC; 1867 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE; 1868 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL); 1869 1870 if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) { 1871 if (ndlp->nlp_flag & NLP_NPR_ADISC) { 1872 spin_lock_irq(shost->host_lock); 1873 ndlp->nlp_flag &= ~NLP_NPR_ADISC; 1874 ndlp->nlp_prev_state = NLP_STE_NPR_NODE; 1875 spin_unlock_irq(shost->host_lock); 1876 lpfc_nlp_set_state(vport, ndlp, NLP_STE_ADISC_ISSUE); 1877 lpfc_issue_els_adisc(vport, ndlp, 0); 1878 } else { 1879 ndlp->nlp_prev_state = NLP_STE_NPR_NODE; 1880 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE); 1881 lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0); 1882 } 1883 } 1884 return ndlp->nlp_state; 1885 } 1886 1887 static uint32_t 1888 lpfc_rcv_logo_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 1889 void *arg, uint32_t evt) 1890 { 1891 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg; 1892 1893 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO); 1894 return ndlp->nlp_state; 1895 } 1896 1897 static uint32_t 1898 lpfc_rcv_padisc_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 1899 void *arg, uint32_t evt) 1900 { 1901 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg; 1902 1903 lpfc_rcv_padisc(vport, ndlp, cmdiocb); 1904 /* 1905 * Do not start discovery if discovery is about to start 1906 * or discovery in progress for this node. Starting discovery 1907 * here will affect the counting of discovery threads. 1908 */ 1909 if (!(ndlp->nlp_flag & NLP_DELAY_TMO) && 1910 !(ndlp->nlp_flag & NLP_NPR_2B_DISC)) { 1911 if (ndlp->nlp_flag & NLP_NPR_ADISC) { 1912 ndlp->nlp_flag &= ~NLP_NPR_ADISC; 1913 ndlp->nlp_prev_state = NLP_STE_NPR_NODE; 1914 lpfc_nlp_set_state(vport, ndlp, NLP_STE_ADISC_ISSUE); 1915 lpfc_issue_els_adisc(vport, ndlp, 0); 1916 } else { 1917 ndlp->nlp_prev_state = NLP_STE_NPR_NODE; 1918 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE); 1919 lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0); 1920 } 1921 } 1922 return ndlp->nlp_state; 1923 } 1924 1925 static uint32_t 1926 lpfc_rcv_prlo_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 1927 void *arg, uint32_t evt) 1928 { 1929 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 1930 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg; 1931 1932 spin_lock_irq(shost->host_lock); 1933 ndlp->nlp_flag |= NLP_LOGO_ACC; 1934 spin_unlock_irq(shost->host_lock); 1935 1936 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL); 1937 1938 if ((ndlp->nlp_flag & NLP_DELAY_TMO) == 0) { 1939 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ * 1); 1940 spin_lock_irq(shost->host_lock); 1941 ndlp->nlp_flag |= NLP_DELAY_TMO; 1942 ndlp->nlp_flag &= ~NLP_NPR_ADISC; 1943 spin_unlock_irq(shost->host_lock); 1944 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI; 1945 } else { 1946 spin_lock_irq(shost->host_lock); 1947 ndlp->nlp_flag &= ~NLP_NPR_ADISC; 1948 spin_unlock_irq(shost->host_lock); 1949 } 1950 return ndlp->nlp_state; 1951 } 1952 1953 static uint32_t 1954 lpfc_cmpl_plogi_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 1955 void *arg, uint32_t evt) 1956 { 1957 struct lpfc_iocbq *cmdiocb, *rspiocb; 1958 IOCB_t *irsp; 1959 1960 cmdiocb = (struct lpfc_iocbq *) arg; 1961 rspiocb = cmdiocb->context_un.rsp_iocb; 1962 1963 irsp = &rspiocb->iocb; 1964 if (irsp->ulpStatus) { 1965 ndlp->nlp_flag |= NLP_DEFER_RM; 1966 return NLP_STE_FREED_NODE; 1967 } 1968 return ndlp->nlp_state; 1969 } 1970 1971 static uint32_t 1972 lpfc_cmpl_prli_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 1973 void *arg, uint32_t evt) 1974 { 1975 struct lpfc_iocbq *cmdiocb, *rspiocb; 1976 IOCB_t *irsp; 1977 1978 cmdiocb = (struct lpfc_iocbq *) arg; 1979 rspiocb = cmdiocb->context_un.rsp_iocb; 1980 1981 irsp = &rspiocb->iocb; 1982 if (irsp->ulpStatus && (ndlp->nlp_flag & NLP_NODEV_REMOVE)) { 1983 lpfc_drop_node(vport, ndlp); 1984 return NLP_STE_FREED_NODE; 1985 } 1986 return ndlp->nlp_state; 1987 } 1988 1989 static uint32_t 1990 lpfc_cmpl_logo_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 1991 void *arg, uint32_t evt) 1992 { 1993 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 1994 if (ndlp->nlp_DID == Fabric_DID) { 1995 spin_lock_irq(shost->host_lock); 1996 vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP); 1997 spin_unlock_irq(shost->host_lock); 1998 } 1999 lpfc_unreg_rpi(vport, ndlp); 2000 return ndlp->nlp_state; 2001 } 2002 2003 static uint32_t 2004 lpfc_cmpl_adisc_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 2005 void *arg, uint32_t evt) 2006 { 2007 struct lpfc_iocbq *cmdiocb, *rspiocb; 2008 IOCB_t *irsp; 2009 2010 cmdiocb = (struct lpfc_iocbq *) arg; 2011 rspiocb = cmdiocb->context_un.rsp_iocb; 2012 2013 irsp = &rspiocb->iocb; 2014 if (irsp->ulpStatus && (ndlp->nlp_flag & NLP_NODEV_REMOVE)) { 2015 lpfc_drop_node(vport, ndlp); 2016 return NLP_STE_FREED_NODE; 2017 } 2018 return ndlp->nlp_state; 2019 } 2020 2021 static uint32_t 2022 lpfc_cmpl_reglogin_npr_node(struct lpfc_vport *vport, 2023 struct lpfc_nodelist *ndlp, 2024 void *arg, uint32_t evt) 2025 { 2026 LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg; 2027 MAILBOX_t *mb = &pmb->u.mb; 2028 2029 if (!mb->mbxStatus) { 2030 /* SLI4 ports have preallocated logical rpis. */ 2031 if (vport->phba->sli_rev < LPFC_SLI_REV4) 2032 ndlp->nlp_rpi = mb->un.varWords[0]; 2033 ndlp->nlp_flag |= NLP_RPI_REGISTERED; 2034 } else { 2035 if (ndlp->nlp_flag & NLP_NODEV_REMOVE) { 2036 lpfc_drop_node(vport, ndlp); 2037 return NLP_STE_FREED_NODE; 2038 } 2039 } 2040 return ndlp->nlp_state; 2041 } 2042 2043 static uint32_t 2044 lpfc_device_rm_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 2045 void *arg, uint32_t evt) 2046 { 2047 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 2048 2049 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) { 2050 spin_lock_irq(shost->host_lock); 2051 ndlp->nlp_flag |= NLP_NODEV_REMOVE; 2052 spin_unlock_irq(shost->host_lock); 2053 return ndlp->nlp_state; 2054 } 2055 lpfc_drop_node(vport, ndlp); 2056 return NLP_STE_FREED_NODE; 2057 } 2058 2059 static uint32_t 2060 lpfc_device_recov_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 2061 void *arg, uint32_t evt) 2062 { 2063 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 2064 2065 /* Don't do anything that will mess up processing of the 2066 * previous RSCN. 2067 */ 2068 if (vport->fc_flag & FC_RSCN_DEFERRED) 2069 return ndlp->nlp_state; 2070 2071 lpfc_cancel_retry_delay_tmo(vport, ndlp); 2072 spin_lock_irq(shost->host_lock); 2073 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC); 2074 spin_unlock_irq(shost->host_lock); 2075 return ndlp->nlp_state; 2076 } 2077 2078 2079 /* This next section defines the NPort Discovery State Machine */ 2080 2081 /* There are 4 different double linked lists nodelist entries can reside on. 2082 * The plogi list and adisc list are used when Link Up discovery or RSCN 2083 * processing is needed. Each list holds the nodes that we will send PLOGI 2084 * or ADISC on. These lists will keep track of what nodes will be effected 2085 * by an RSCN, or a Link Up (Typically, all nodes are effected on Link Up). 2086 * The unmapped_list will contain all nodes that we have successfully logged 2087 * into at the Fibre Channel level. The mapped_list will contain all nodes 2088 * that are mapped FCP targets. 2089 */ 2090 /* 2091 * The bind list is a list of undiscovered (potentially non-existent) nodes 2092 * that we have saved binding information on. This information is used when 2093 * nodes transition from the unmapped to the mapped list. 2094 */ 2095 /* For UNUSED_NODE state, the node has just been allocated . 2096 * For PLOGI_ISSUE and REG_LOGIN_ISSUE, the node is on 2097 * the PLOGI list. For REG_LOGIN_COMPL, the node is taken off the PLOGI list 2098 * and put on the unmapped list. For ADISC processing, the node is taken off 2099 * the ADISC list and placed on either the mapped or unmapped list (depending 2100 * on its previous state). Once on the unmapped list, a PRLI is issued and the 2101 * state changed to PRLI_ISSUE. When the PRLI completion occurs, the state is 2102 * changed to UNMAPPED_NODE. If the completion indicates a mapped 2103 * node, the node is taken off the unmapped list. The binding list is checked 2104 * for a valid binding, or a binding is automatically assigned. If binding 2105 * assignment is unsuccessful, the node is left on the unmapped list. If 2106 * binding assignment is successful, the associated binding list entry (if 2107 * any) is removed, and the node is placed on the mapped list. 2108 */ 2109 /* 2110 * For a Link Down, all nodes on the ADISC, PLOGI, unmapped or mapped 2111 * lists will receive a DEVICE_RECOVERY event. If the linkdown or devloss timers 2112 * expire, all effected nodes will receive a DEVICE_RM event. 2113 */ 2114 /* 2115 * For a Link Up or RSCN, all nodes will move from the mapped / unmapped lists 2116 * to either the ADISC or PLOGI list. After a Nameserver query or ALPA loopmap 2117 * check, additional nodes may be added or removed (via DEVICE_RM) to / from 2118 * the PLOGI or ADISC lists. Once the PLOGI and ADISC lists are populated, 2119 * we will first process the ADISC list. 32 entries are processed initially and 2120 * ADISC is initited for each one. Completions / Events for each node are 2121 * funnelled thru the state machine. As each node finishes ADISC processing, it 2122 * starts ADISC for any nodes waiting for ADISC processing. If no nodes are 2123 * waiting, and the ADISC list count is identically 0, then we are done. For 2124 * Link Up discovery, since all nodes on the PLOGI list are UNREG_LOGIN'ed, we 2125 * can issue a CLEAR_LA and reenable Link Events. Next we will process the PLOGI 2126 * list. 32 entries are processed initially and PLOGI is initited for each one. 2127 * Completions / Events for each node are funnelled thru the state machine. As 2128 * each node finishes PLOGI processing, it starts PLOGI for any nodes waiting 2129 * for PLOGI processing. If no nodes are waiting, and the PLOGI list count is 2130 * indentically 0, then we are done. We have now completed discovery / RSCN 2131 * handling. Upon completion, ALL nodes should be on either the mapped or 2132 * unmapped lists. 2133 */ 2134 2135 static uint32_t (*lpfc_disc_action[NLP_STE_MAX_STATE * NLP_EVT_MAX_EVENT]) 2136 (struct lpfc_vport *, struct lpfc_nodelist *, void *, uint32_t) = { 2137 /* Action routine Event Current State */ 2138 lpfc_rcv_plogi_unused_node, /* RCV_PLOGI UNUSED_NODE */ 2139 lpfc_rcv_els_unused_node, /* RCV_PRLI */ 2140 lpfc_rcv_logo_unused_node, /* RCV_LOGO */ 2141 lpfc_rcv_els_unused_node, /* RCV_ADISC */ 2142 lpfc_rcv_els_unused_node, /* RCV_PDISC */ 2143 lpfc_rcv_els_unused_node, /* RCV_PRLO */ 2144 lpfc_disc_illegal, /* CMPL_PLOGI */ 2145 lpfc_disc_illegal, /* CMPL_PRLI */ 2146 lpfc_cmpl_logo_unused_node, /* CMPL_LOGO */ 2147 lpfc_disc_illegal, /* CMPL_ADISC */ 2148 lpfc_disc_illegal, /* CMPL_REG_LOGIN */ 2149 lpfc_device_rm_unused_node, /* DEVICE_RM */ 2150 lpfc_disc_illegal, /* DEVICE_RECOVERY */ 2151 2152 lpfc_rcv_plogi_plogi_issue, /* RCV_PLOGI PLOGI_ISSUE */ 2153 lpfc_rcv_prli_plogi_issue, /* RCV_PRLI */ 2154 lpfc_rcv_logo_plogi_issue, /* RCV_LOGO */ 2155 lpfc_rcv_els_plogi_issue, /* RCV_ADISC */ 2156 lpfc_rcv_els_plogi_issue, /* RCV_PDISC */ 2157 lpfc_rcv_els_plogi_issue, /* RCV_PRLO */ 2158 lpfc_cmpl_plogi_plogi_issue, /* CMPL_PLOGI */ 2159 lpfc_disc_illegal, /* CMPL_PRLI */ 2160 lpfc_cmpl_logo_plogi_issue, /* CMPL_LOGO */ 2161 lpfc_disc_illegal, /* CMPL_ADISC */ 2162 lpfc_cmpl_reglogin_plogi_issue,/* CMPL_REG_LOGIN */ 2163 lpfc_device_rm_plogi_issue, /* DEVICE_RM */ 2164 lpfc_device_recov_plogi_issue, /* DEVICE_RECOVERY */ 2165 2166 lpfc_rcv_plogi_adisc_issue, /* RCV_PLOGI ADISC_ISSUE */ 2167 lpfc_rcv_prli_adisc_issue, /* RCV_PRLI */ 2168 lpfc_rcv_logo_adisc_issue, /* RCV_LOGO */ 2169 lpfc_rcv_padisc_adisc_issue, /* RCV_ADISC */ 2170 lpfc_rcv_padisc_adisc_issue, /* RCV_PDISC */ 2171 lpfc_rcv_prlo_adisc_issue, /* RCV_PRLO */ 2172 lpfc_disc_illegal, /* CMPL_PLOGI */ 2173 lpfc_disc_illegal, /* CMPL_PRLI */ 2174 lpfc_disc_illegal, /* CMPL_LOGO */ 2175 lpfc_cmpl_adisc_adisc_issue, /* CMPL_ADISC */ 2176 lpfc_disc_illegal, /* CMPL_REG_LOGIN */ 2177 lpfc_device_rm_adisc_issue, /* DEVICE_RM */ 2178 lpfc_device_recov_adisc_issue, /* DEVICE_RECOVERY */ 2179 2180 lpfc_rcv_plogi_reglogin_issue, /* RCV_PLOGI REG_LOGIN_ISSUE */ 2181 lpfc_rcv_prli_reglogin_issue, /* RCV_PLOGI */ 2182 lpfc_rcv_logo_reglogin_issue, /* RCV_LOGO */ 2183 lpfc_rcv_padisc_reglogin_issue, /* RCV_ADISC */ 2184 lpfc_rcv_padisc_reglogin_issue, /* RCV_PDISC */ 2185 lpfc_rcv_prlo_reglogin_issue, /* RCV_PRLO */ 2186 lpfc_cmpl_plogi_illegal, /* CMPL_PLOGI */ 2187 lpfc_disc_illegal, /* CMPL_PRLI */ 2188 lpfc_disc_illegal, /* CMPL_LOGO */ 2189 lpfc_disc_illegal, /* CMPL_ADISC */ 2190 lpfc_cmpl_reglogin_reglogin_issue,/* CMPL_REG_LOGIN */ 2191 lpfc_device_rm_reglogin_issue, /* DEVICE_RM */ 2192 lpfc_device_recov_reglogin_issue,/* DEVICE_RECOVERY */ 2193 2194 lpfc_rcv_plogi_prli_issue, /* RCV_PLOGI PRLI_ISSUE */ 2195 lpfc_rcv_prli_prli_issue, /* RCV_PRLI */ 2196 lpfc_rcv_logo_prli_issue, /* RCV_LOGO */ 2197 lpfc_rcv_padisc_prli_issue, /* RCV_ADISC */ 2198 lpfc_rcv_padisc_prli_issue, /* RCV_PDISC */ 2199 lpfc_rcv_prlo_prli_issue, /* RCV_PRLO */ 2200 lpfc_cmpl_plogi_illegal, /* CMPL_PLOGI */ 2201 lpfc_cmpl_prli_prli_issue, /* CMPL_PRLI */ 2202 lpfc_disc_illegal, /* CMPL_LOGO */ 2203 lpfc_disc_illegal, /* CMPL_ADISC */ 2204 lpfc_disc_illegal, /* CMPL_REG_LOGIN */ 2205 lpfc_device_rm_prli_issue, /* DEVICE_RM */ 2206 lpfc_device_recov_prli_issue, /* DEVICE_RECOVERY */ 2207 2208 lpfc_rcv_plogi_unmap_node, /* RCV_PLOGI UNMAPPED_NODE */ 2209 lpfc_rcv_prli_unmap_node, /* RCV_PRLI */ 2210 lpfc_rcv_logo_unmap_node, /* RCV_LOGO */ 2211 lpfc_rcv_padisc_unmap_node, /* RCV_ADISC */ 2212 lpfc_rcv_padisc_unmap_node, /* RCV_PDISC */ 2213 lpfc_rcv_prlo_unmap_node, /* RCV_PRLO */ 2214 lpfc_disc_illegal, /* CMPL_PLOGI */ 2215 lpfc_disc_illegal, /* CMPL_PRLI */ 2216 lpfc_disc_illegal, /* CMPL_LOGO */ 2217 lpfc_disc_illegal, /* CMPL_ADISC */ 2218 lpfc_disc_illegal, /* CMPL_REG_LOGIN */ 2219 lpfc_disc_illegal, /* DEVICE_RM */ 2220 lpfc_device_recov_unmap_node, /* DEVICE_RECOVERY */ 2221 2222 lpfc_rcv_plogi_mapped_node, /* RCV_PLOGI MAPPED_NODE */ 2223 lpfc_rcv_prli_mapped_node, /* RCV_PRLI */ 2224 lpfc_rcv_logo_mapped_node, /* RCV_LOGO */ 2225 lpfc_rcv_padisc_mapped_node, /* RCV_ADISC */ 2226 lpfc_rcv_padisc_mapped_node, /* RCV_PDISC */ 2227 lpfc_rcv_prlo_mapped_node, /* RCV_PRLO */ 2228 lpfc_disc_illegal, /* CMPL_PLOGI */ 2229 lpfc_disc_illegal, /* CMPL_PRLI */ 2230 lpfc_disc_illegal, /* CMPL_LOGO */ 2231 lpfc_disc_illegal, /* CMPL_ADISC */ 2232 lpfc_disc_illegal, /* CMPL_REG_LOGIN */ 2233 lpfc_disc_illegal, /* DEVICE_RM */ 2234 lpfc_device_recov_mapped_node, /* DEVICE_RECOVERY */ 2235 2236 lpfc_rcv_plogi_npr_node, /* RCV_PLOGI NPR_NODE */ 2237 lpfc_rcv_prli_npr_node, /* RCV_PRLI */ 2238 lpfc_rcv_logo_npr_node, /* RCV_LOGO */ 2239 lpfc_rcv_padisc_npr_node, /* RCV_ADISC */ 2240 lpfc_rcv_padisc_npr_node, /* RCV_PDISC */ 2241 lpfc_rcv_prlo_npr_node, /* RCV_PRLO */ 2242 lpfc_cmpl_plogi_npr_node, /* CMPL_PLOGI */ 2243 lpfc_cmpl_prli_npr_node, /* CMPL_PRLI */ 2244 lpfc_cmpl_logo_npr_node, /* CMPL_LOGO */ 2245 lpfc_cmpl_adisc_npr_node, /* CMPL_ADISC */ 2246 lpfc_cmpl_reglogin_npr_node, /* CMPL_REG_LOGIN */ 2247 lpfc_device_rm_npr_node, /* DEVICE_RM */ 2248 lpfc_device_recov_npr_node, /* DEVICE_RECOVERY */ 2249 }; 2250 2251 int 2252 lpfc_disc_state_machine(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 2253 void *arg, uint32_t evt) 2254 { 2255 uint32_t cur_state, rc; 2256 uint32_t(*func) (struct lpfc_vport *, struct lpfc_nodelist *, void *, 2257 uint32_t); 2258 uint32_t got_ndlp = 0; 2259 2260 if (lpfc_nlp_get(ndlp)) 2261 got_ndlp = 1; 2262 2263 cur_state = ndlp->nlp_state; 2264 2265 /* DSM in event <evt> on NPort <nlp_DID> in state <cur_state> */ 2266 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, 2267 "0211 DSM in event x%x on NPort x%x in " 2268 "state %d Data: x%x\n", 2269 evt, ndlp->nlp_DID, cur_state, ndlp->nlp_flag); 2270 2271 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_DSM, 2272 "DSM in: evt:%d ste:%d did:x%x", 2273 evt, cur_state, ndlp->nlp_DID); 2274 2275 func = lpfc_disc_action[(cur_state * NLP_EVT_MAX_EVENT) + evt]; 2276 rc = (func) (vport, ndlp, arg, evt); 2277 2278 /* DSM out state <rc> on NPort <nlp_DID> */ 2279 if (got_ndlp) { 2280 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, 2281 "0212 DSM out state %d on NPort x%x Data: x%x\n", 2282 rc, ndlp->nlp_DID, ndlp->nlp_flag); 2283 2284 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_DSM, 2285 "DSM out: ste:%d did:x%x flg:x%x", 2286 rc, ndlp->nlp_DID, ndlp->nlp_flag); 2287 /* Decrement the ndlp reference count held for this function */ 2288 lpfc_nlp_put(ndlp); 2289 } else { 2290 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, 2291 "0213 DSM out state %d on NPort free\n", rc); 2292 2293 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_DSM, 2294 "DSM out: ste:%d did:x%x flg:x%x", 2295 rc, 0, 0); 2296 } 2297 2298 return rc; 2299 } 2300