1 /******************************************************************* 2 * This file is part of the Emulex Linux Device Driver for * 3 * Fibre Channel Host Bus Adapters. * 4 * Copyright (C) 2017 Broadcom. All Rights Reserved. The term * 5 * “Broadcom” refers to Broadcom Limited and/or its subsidiaries. * 6 * Copyright (C) 2004-2016 Emulex. All rights reserved. * 7 * EMULEX and SLI are trademarks of Emulex. * 8 * www.broadcom.com * 9 * Portions Copyright (C) 2004-2005 Christoph Hellwig * 10 * * 11 * This program is free software; you can redistribute it and/or * 12 * modify it under the terms of version 2 of the GNU General * 13 * Public License as published by the Free Software Foundation. * 14 * This program is distributed in the hope that it will be useful. * 15 * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND * 16 * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, * 17 * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE * 18 * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD * 19 * TO BE LEGALLY INVALID. See the GNU General Public License for * 20 * more details, a copy of which can be found in the file COPYING * 21 * included with this package. * 22 *******************************************************************/ 23 24 #include <linux/blkdev.h> 25 #include <linux/pci.h> 26 #include <linux/slab.h> 27 #include <linux/interrupt.h> 28 29 #include <scsi/scsi.h> 30 #include <scsi/scsi_device.h> 31 #include <scsi/scsi_host.h> 32 #include <scsi/scsi_transport_fc.h> 33 #include <scsi/fc/fc_fs.h> 34 35 #include <linux/nvme-fc-driver.h> 36 37 #include "lpfc_hw4.h" 38 #include "lpfc_hw.h" 39 #include "lpfc_sli.h" 40 #include "lpfc_sli4.h" 41 #include "lpfc_nl.h" 42 #include "lpfc_disc.h" 43 #include "lpfc.h" 44 #include "lpfc_scsi.h" 45 #include "lpfc_nvme.h" 46 #include "lpfc_logmsg.h" 47 #include "lpfc_crtn.h" 48 #include "lpfc_vport.h" 49 #include "lpfc_debugfs.h" 50 51 52 /* Called to verify a rcv'ed ADISC was intended for us. */ 53 static int 54 lpfc_check_adisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 55 struct lpfc_name *nn, struct lpfc_name *pn) 56 { 57 /* First, we MUST have a RPI registered */ 58 if (!(ndlp->nlp_flag & NLP_RPI_REGISTERED)) 59 return 0; 60 61 /* Compare the ADISC rsp WWNN / WWPN matches our internal node 62 * table entry for that node. 63 */ 64 if (memcmp(nn, &ndlp->nlp_nodename, sizeof (struct lpfc_name))) 65 return 0; 66 67 if (memcmp(pn, &ndlp->nlp_portname, sizeof (struct lpfc_name))) 68 return 0; 69 70 /* we match, return success */ 71 return 1; 72 } 73 74 int 75 lpfc_check_sparm(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 76 struct serv_parm *sp, uint32_t class, int flogi) 77 { 78 volatile struct serv_parm *hsp = &vport->fc_sparam; 79 uint16_t hsp_value, ssp_value = 0; 80 81 /* 82 * The receive data field size and buffer-to-buffer receive data field 83 * size entries are 16 bits but are represented as two 8-bit fields in 84 * the driver data structure to account for rsvd bits and other control 85 * bits. Reconstruct and compare the fields as a 16-bit values before 86 * correcting the byte values. 87 */ 88 if (sp->cls1.classValid) { 89 if (!flogi) { 90 hsp_value = ((hsp->cls1.rcvDataSizeMsb << 8) | 91 hsp->cls1.rcvDataSizeLsb); 92 ssp_value = ((sp->cls1.rcvDataSizeMsb << 8) | 93 sp->cls1.rcvDataSizeLsb); 94 if (!ssp_value) 95 goto bad_service_param; 96 if (ssp_value > hsp_value) { 97 sp->cls1.rcvDataSizeLsb = 98 hsp->cls1.rcvDataSizeLsb; 99 sp->cls1.rcvDataSizeMsb = 100 hsp->cls1.rcvDataSizeMsb; 101 } 102 } 103 } else if (class == CLASS1) 104 goto bad_service_param; 105 if (sp->cls2.classValid) { 106 if (!flogi) { 107 hsp_value = ((hsp->cls2.rcvDataSizeMsb << 8) | 108 hsp->cls2.rcvDataSizeLsb); 109 ssp_value = ((sp->cls2.rcvDataSizeMsb << 8) | 110 sp->cls2.rcvDataSizeLsb); 111 if (!ssp_value) 112 goto bad_service_param; 113 if (ssp_value > hsp_value) { 114 sp->cls2.rcvDataSizeLsb = 115 hsp->cls2.rcvDataSizeLsb; 116 sp->cls2.rcvDataSizeMsb = 117 hsp->cls2.rcvDataSizeMsb; 118 } 119 } 120 } else if (class == CLASS2) 121 goto bad_service_param; 122 if (sp->cls3.classValid) { 123 if (!flogi) { 124 hsp_value = ((hsp->cls3.rcvDataSizeMsb << 8) | 125 hsp->cls3.rcvDataSizeLsb); 126 ssp_value = ((sp->cls3.rcvDataSizeMsb << 8) | 127 sp->cls3.rcvDataSizeLsb); 128 if (!ssp_value) 129 goto bad_service_param; 130 if (ssp_value > hsp_value) { 131 sp->cls3.rcvDataSizeLsb = 132 hsp->cls3.rcvDataSizeLsb; 133 sp->cls3.rcvDataSizeMsb = 134 hsp->cls3.rcvDataSizeMsb; 135 } 136 } 137 } else if (class == CLASS3) 138 goto bad_service_param; 139 140 /* 141 * Preserve the upper four bits of the MSB from the PLOGI response. 142 * These bits contain the Buffer-to-Buffer State Change Number 143 * from the target and need to be passed to the FW. 144 */ 145 hsp_value = (hsp->cmn.bbRcvSizeMsb << 8) | hsp->cmn.bbRcvSizeLsb; 146 ssp_value = (sp->cmn.bbRcvSizeMsb << 8) | sp->cmn.bbRcvSizeLsb; 147 if (ssp_value > hsp_value) { 148 sp->cmn.bbRcvSizeLsb = hsp->cmn.bbRcvSizeLsb; 149 sp->cmn.bbRcvSizeMsb = (sp->cmn.bbRcvSizeMsb & 0xF0) | 150 (hsp->cmn.bbRcvSizeMsb & 0x0F); 151 } 152 153 memcpy(&ndlp->nlp_nodename, &sp->nodeName, sizeof (struct lpfc_name)); 154 memcpy(&ndlp->nlp_portname, &sp->portName, sizeof (struct lpfc_name)); 155 return 1; 156 bad_service_param: 157 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY, 158 "0207 Device %x " 159 "(%02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x) sent " 160 "invalid service parameters. Ignoring device.\n", 161 ndlp->nlp_DID, 162 sp->nodeName.u.wwn[0], sp->nodeName.u.wwn[1], 163 sp->nodeName.u.wwn[2], sp->nodeName.u.wwn[3], 164 sp->nodeName.u.wwn[4], sp->nodeName.u.wwn[5], 165 sp->nodeName.u.wwn[6], sp->nodeName.u.wwn[7]); 166 return 0; 167 } 168 169 static void * 170 lpfc_check_elscmpl_iocb(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb, 171 struct lpfc_iocbq *rspiocb) 172 { 173 struct lpfc_dmabuf *pcmd, *prsp; 174 uint32_t *lp; 175 void *ptr = NULL; 176 IOCB_t *irsp; 177 178 irsp = &rspiocb->iocb; 179 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2; 180 181 /* For lpfc_els_abort, context2 could be zero'ed to delay 182 * freeing associated memory till after ABTS completes. 183 */ 184 if (pcmd) { 185 prsp = list_get_first(&pcmd->list, struct lpfc_dmabuf, 186 list); 187 if (prsp) { 188 lp = (uint32_t *) prsp->virt; 189 ptr = (void *)((uint8_t *)lp + sizeof(uint32_t)); 190 } 191 } else { 192 /* Force ulpStatus error since we are returning NULL ptr */ 193 if (!(irsp->ulpStatus)) { 194 irsp->ulpStatus = IOSTAT_LOCAL_REJECT; 195 irsp->un.ulpWord[4] = IOERR_SLI_ABORTED; 196 } 197 ptr = NULL; 198 } 199 return ptr; 200 } 201 202 203 204 /* 205 * Free resources / clean up outstanding I/Os 206 * associated with a LPFC_NODELIST entry. This 207 * routine effectively results in a "software abort". 208 */ 209 void 210 lpfc_els_abort(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp) 211 { 212 LIST_HEAD(abort_list); 213 struct lpfc_sli_ring *pring; 214 struct lpfc_iocbq *iocb, *next_iocb; 215 216 pring = lpfc_phba_elsring(phba); 217 218 /* In case of error recovery path, we might have a NULL pring here */ 219 if (!pring) 220 return; 221 222 /* Abort outstanding I/O on NPort <nlp_DID> */ 223 lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_DISCOVERY, 224 "2819 Abort outstanding I/O on NPort x%x " 225 "Data: x%x x%x x%x\n", 226 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state, 227 ndlp->nlp_rpi); 228 /* Clean up all fabric IOs first.*/ 229 lpfc_fabric_abort_nport(ndlp); 230 231 /* 232 * Lock the ELS ring txcmplq for SLI3/SLI4 and build a local list 233 * of all ELS IOs that need an ABTS. The IOs need to stay on the 234 * txcmplq so that the abort operation completes them successfully. 235 */ 236 spin_lock_irq(&phba->hbalock); 237 if (phba->sli_rev == LPFC_SLI_REV4) 238 spin_lock(&pring->ring_lock); 239 list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq, list) { 240 /* Add to abort_list on on NDLP match. */ 241 if (lpfc_check_sli_ndlp(phba, pring, iocb, ndlp)) 242 list_add_tail(&iocb->dlist, &abort_list); 243 } 244 if (phba->sli_rev == LPFC_SLI_REV4) 245 spin_unlock(&pring->ring_lock); 246 spin_unlock_irq(&phba->hbalock); 247 248 /* Abort the targeted IOs and remove them from the abort list. */ 249 list_for_each_entry_safe(iocb, next_iocb, &abort_list, dlist) { 250 spin_lock_irq(&phba->hbalock); 251 list_del_init(&iocb->dlist); 252 lpfc_sli_issue_abort_iotag(phba, pring, iocb); 253 spin_unlock_irq(&phba->hbalock); 254 } 255 256 INIT_LIST_HEAD(&abort_list); 257 258 /* Now process the txq */ 259 spin_lock_irq(&phba->hbalock); 260 if (phba->sli_rev == LPFC_SLI_REV4) 261 spin_lock(&pring->ring_lock); 262 263 list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) { 264 /* Check to see if iocb matches the nport we are looking for */ 265 if (lpfc_check_sli_ndlp(phba, pring, iocb, ndlp)) { 266 list_del_init(&iocb->list); 267 list_add_tail(&iocb->list, &abort_list); 268 } 269 } 270 271 if (phba->sli_rev == LPFC_SLI_REV4) 272 spin_unlock(&pring->ring_lock); 273 spin_unlock_irq(&phba->hbalock); 274 275 /* Cancel all the IOCBs from the completions list */ 276 lpfc_sli_cancel_iocbs(phba, &abort_list, 277 IOSTAT_LOCAL_REJECT, IOERR_SLI_ABORTED); 278 279 lpfc_cancel_retry_delay_tmo(phba->pport, ndlp); 280 } 281 282 static int 283 lpfc_rcv_plogi(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 284 struct lpfc_iocbq *cmdiocb) 285 { 286 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 287 struct lpfc_hba *phba = vport->phba; 288 struct lpfc_dmabuf *pcmd; 289 uint64_t nlp_portwwn = 0; 290 uint32_t *lp; 291 IOCB_t *icmd; 292 struct serv_parm *sp; 293 uint32_t ed_tov; 294 LPFC_MBOXQ_t *mbox; 295 struct ls_rjt stat; 296 uint32_t vid, flag; 297 int rc; 298 299 memset(&stat, 0, sizeof (struct ls_rjt)); 300 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2; 301 lp = (uint32_t *) pcmd->virt; 302 sp = (struct serv_parm *) ((uint8_t *) lp + sizeof (uint32_t)); 303 if (wwn_to_u64(sp->portName.u.wwn) == 0) { 304 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS, 305 "0140 PLOGI Reject: invalid nname\n"); 306 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC; 307 stat.un.b.lsRjtRsnCodeExp = LSEXP_INVALID_PNAME; 308 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, 309 NULL); 310 return 0; 311 } 312 if (wwn_to_u64(sp->nodeName.u.wwn) == 0) { 313 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS, 314 "0141 PLOGI Reject: invalid pname\n"); 315 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC; 316 stat.un.b.lsRjtRsnCodeExp = LSEXP_INVALID_NNAME; 317 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, 318 NULL); 319 return 0; 320 } 321 322 nlp_portwwn = wwn_to_u64(ndlp->nlp_portname.u.wwn); 323 if ((lpfc_check_sparm(vport, ndlp, sp, CLASS3, 0) == 0)) { 324 /* Reject this request because invalid parameters */ 325 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC; 326 stat.un.b.lsRjtRsnCodeExp = LSEXP_SPARM_OPTIONS; 327 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, 328 NULL); 329 return 0; 330 } 331 icmd = &cmdiocb->iocb; 332 333 /* PLOGI chkparm OK */ 334 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, 335 "0114 PLOGI chkparm OK Data: x%x x%x x%x " 336 "x%x x%x x%x\n", 337 ndlp->nlp_DID, ndlp->nlp_state, ndlp->nlp_flag, 338 ndlp->nlp_rpi, vport->port_state, 339 vport->fc_flag); 340 341 if (vport->cfg_fcp_class == 2 && sp->cls2.classValid) 342 ndlp->nlp_fcp_info |= CLASS2; 343 else 344 ndlp->nlp_fcp_info |= CLASS3; 345 346 ndlp->nlp_class_sup = 0; 347 if (sp->cls1.classValid) 348 ndlp->nlp_class_sup |= FC_COS_CLASS1; 349 if (sp->cls2.classValid) 350 ndlp->nlp_class_sup |= FC_COS_CLASS2; 351 if (sp->cls3.classValid) 352 ndlp->nlp_class_sup |= FC_COS_CLASS3; 353 if (sp->cls4.classValid) 354 ndlp->nlp_class_sup |= FC_COS_CLASS4; 355 ndlp->nlp_maxframe = 356 ((sp->cmn.bbRcvSizeMsb & 0x0F) << 8) | sp->cmn.bbRcvSizeLsb; 357 358 /* if already logged in, do implicit logout */ 359 switch (ndlp->nlp_state) { 360 case NLP_STE_NPR_NODE: 361 if (!(ndlp->nlp_flag & NLP_NPR_ADISC)) 362 break; 363 case NLP_STE_REG_LOGIN_ISSUE: 364 case NLP_STE_PRLI_ISSUE: 365 case NLP_STE_UNMAPPED_NODE: 366 case NLP_STE_MAPPED_NODE: 367 /* For initiators, lpfc_plogi_confirm_nport skips fabric did. 368 * For target mode, execute implicit logo. 369 * Fabric nodes go into NPR. 370 */ 371 if (!(ndlp->nlp_type & NLP_FABRIC) && 372 !(phba->nvmet_support)) { 373 lpfc_els_rsp_acc(vport, ELS_CMD_PLOGI, cmdiocb, 374 ndlp, NULL); 375 return 1; 376 } 377 if (nlp_portwwn != 0 && 378 nlp_portwwn != wwn_to_u64(sp->portName.u.wwn)) 379 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS, 380 "0143 PLOGI recv'd from DID: x%x " 381 "WWPN changed: old %llx new %llx\n", 382 ndlp->nlp_DID, 383 (unsigned long long)nlp_portwwn, 384 (unsigned long long) 385 wwn_to_u64(sp->portName.u.wwn)); 386 387 ndlp->nlp_prev_state = ndlp->nlp_state; 388 /* rport needs to be unregistered first */ 389 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE); 390 break; 391 } 392 393 /* Check for Nport to NPort pt2pt protocol */ 394 if ((vport->fc_flag & FC_PT2PT) && 395 !(vport->fc_flag & FC_PT2PT_PLOGI)) { 396 /* rcv'ed PLOGI decides what our NPortId will be */ 397 vport->fc_myDID = icmd->un.rcvels.parmRo; 398 399 ed_tov = be32_to_cpu(sp->cmn.e_d_tov); 400 if (sp->cmn.edtovResolution) { 401 /* E_D_TOV ticks are in nanoseconds */ 402 ed_tov = (phba->fc_edtov + 999999) / 1000000; 403 } 404 405 /* 406 * For pt-to-pt, use the larger EDTOV 407 * RATOV = 2 * EDTOV 408 */ 409 if (ed_tov > phba->fc_edtov) 410 phba->fc_edtov = ed_tov; 411 phba->fc_ratov = (2 * phba->fc_edtov) / 1000; 412 413 memcpy(&phba->fc_fabparam, sp, sizeof(struct serv_parm)); 414 415 /* Issue config_link / reg_vfi to account for updated TOV's */ 416 417 if (phba->sli_rev == LPFC_SLI_REV4) 418 lpfc_issue_reg_vfi(vport); 419 else { 420 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 421 if (mbox == NULL) 422 goto out; 423 lpfc_config_link(phba, mbox); 424 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl; 425 mbox->vport = vport; 426 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT); 427 if (rc == MBX_NOT_FINISHED) { 428 mempool_free(mbox, phba->mbox_mem_pool); 429 goto out; 430 } 431 } 432 433 lpfc_can_disctmo(vport); 434 } 435 436 ndlp->nlp_flag &= ~NLP_SUPPRESS_RSP; 437 if ((phba->sli.sli_flag & LPFC_SLI_SUPPRESS_RSP) && 438 sp->cmn.valid_vendor_ver_level) { 439 vid = be32_to_cpu(sp->un.vv.vid); 440 flag = be32_to_cpu(sp->un.vv.flags); 441 if ((vid == LPFC_VV_EMLX_ID) && (flag & LPFC_VV_SUPPRESS_RSP)) 442 ndlp->nlp_flag |= NLP_SUPPRESS_RSP; 443 } 444 445 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 446 if (!mbox) 447 goto out; 448 449 /* Registering an existing RPI behaves differently for SLI3 vs SLI4 */ 450 if (phba->sli_rev == LPFC_SLI_REV4) 451 lpfc_unreg_rpi(vport, ndlp); 452 453 rc = lpfc_reg_rpi(phba, vport->vpi, icmd->un.rcvels.remoteID, 454 (uint8_t *) sp, mbox, ndlp->nlp_rpi); 455 if (rc) { 456 mempool_free(mbox, phba->mbox_mem_pool); 457 goto out; 458 } 459 460 /* ACC PLOGI rsp command needs to execute first, 461 * queue this mbox command to be processed later. 462 */ 463 mbox->mbox_cmpl = lpfc_mbx_cmpl_reg_login; 464 /* 465 * mbox->context2 = lpfc_nlp_get(ndlp) deferred until mailbox 466 * command issued in lpfc_cmpl_els_acc(). 467 */ 468 mbox->vport = vport; 469 spin_lock_irq(shost->host_lock); 470 ndlp->nlp_flag |= (NLP_ACC_REGLOGIN | NLP_RCV_PLOGI); 471 spin_unlock_irq(shost->host_lock); 472 473 /* 474 * If there is an outstanding PLOGI issued, abort it before 475 * sending ACC rsp for received PLOGI. If pending plogi 476 * is not canceled here, the plogi will be rejected by 477 * remote port and will be retried. On a configuration with 478 * single discovery thread, this will cause a huge delay in 479 * discovery. Also this will cause multiple state machines 480 * running in parallel for this node. 481 */ 482 if (ndlp->nlp_state == NLP_STE_PLOGI_ISSUE) { 483 /* software abort outstanding PLOGI */ 484 lpfc_els_abort(phba, ndlp); 485 } 486 487 if ((vport->port_type == LPFC_NPIV_PORT && 488 vport->cfg_restrict_login)) { 489 490 /* In order to preserve RPIs, we want to cleanup 491 * the default RPI the firmware created to rcv 492 * this ELS request. The only way to do this is 493 * to register, then unregister the RPI. 494 */ 495 spin_lock_irq(shost->host_lock); 496 ndlp->nlp_flag |= NLP_RM_DFLT_RPI; 497 spin_unlock_irq(shost->host_lock); 498 stat.un.b.lsRjtRsnCode = LSRJT_INVALID_CMD; 499 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE; 500 rc = lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, 501 ndlp, mbox); 502 if (rc) 503 mempool_free(mbox, phba->mbox_mem_pool); 504 return 1; 505 } 506 rc = lpfc_els_rsp_acc(vport, ELS_CMD_PLOGI, cmdiocb, ndlp, mbox); 507 if (rc) 508 mempool_free(mbox, phba->mbox_mem_pool); 509 return 1; 510 out: 511 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC; 512 stat.un.b.lsRjtRsnCodeExp = LSEXP_OUT_OF_RESOURCE; 513 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL); 514 return 0; 515 } 516 517 /** 518 * lpfc_mbx_cmpl_resume_rpi - Resume RPI completion routine 519 * @phba: pointer to lpfc hba data structure. 520 * @mboxq: pointer to mailbox object 521 * 522 * This routine is invoked to issue a completion to a rcv'ed 523 * ADISC or PDISC after the paused RPI has been resumed. 524 **/ 525 static void 526 lpfc_mbx_cmpl_resume_rpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq) 527 { 528 struct lpfc_vport *vport; 529 struct lpfc_iocbq *elsiocb; 530 struct lpfc_nodelist *ndlp; 531 uint32_t cmd; 532 533 elsiocb = (struct lpfc_iocbq *)mboxq->context1; 534 ndlp = (struct lpfc_nodelist *) mboxq->context2; 535 vport = mboxq->vport; 536 cmd = elsiocb->drvrTimeout; 537 538 if (cmd == ELS_CMD_ADISC) { 539 lpfc_els_rsp_adisc_acc(vport, elsiocb, ndlp); 540 } else { 541 lpfc_els_rsp_acc(vport, ELS_CMD_PLOGI, elsiocb, 542 ndlp, NULL); 543 } 544 kfree(elsiocb); 545 mempool_free(mboxq, phba->mbox_mem_pool); 546 } 547 548 static int 549 lpfc_rcv_padisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 550 struct lpfc_iocbq *cmdiocb) 551 { 552 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 553 struct lpfc_iocbq *elsiocb; 554 struct lpfc_dmabuf *pcmd; 555 struct serv_parm *sp; 556 struct lpfc_name *pnn, *ppn; 557 struct ls_rjt stat; 558 ADISC *ap; 559 IOCB_t *icmd; 560 uint32_t *lp; 561 uint32_t cmd; 562 563 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2; 564 lp = (uint32_t *) pcmd->virt; 565 566 cmd = *lp++; 567 if (cmd == ELS_CMD_ADISC) { 568 ap = (ADISC *) lp; 569 pnn = (struct lpfc_name *) & ap->nodeName; 570 ppn = (struct lpfc_name *) & ap->portName; 571 } else { 572 sp = (struct serv_parm *) lp; 573 pnn = (struct lpfc_name *) & sp->nodeName; 574 ppn = (struct lpfc_name *) & sp->portName; 575 } 576 577 icmd = &cmdiocb->iocb; 578 if (icmd->ulpStatus == 0 && lpfc_check_adisc(vport, ndlp, pnn, ppn)) { 579 580 /* 581 * As soon as we send ACC, the remote NPort can 582 * start sending us data. Thus, for SLI4 we must 583 * resume the RPI before the ACC goes out. 584 */ 585 if (vport->phba->sli_rev == LPFC_SLI_REV4) { 586 elsiocb = kmalloc(sizeof(struct lpfc_iocbq), 587 GFP_KERNEL); 588 if (elsiocb) { 589 590 /* Save info from cmd IOCB used in rsp */ 591 memcpy((uint8_t *)elsiocb, (uint8_t *)cmdiocb, 592 sizeof(struct lpfc_iocbq)); 593 594 /* Save the ELS cmd */ 595 elsiocb->drvrTimeout = cmd; 596 597 lpfc_sli4_resume_rpi(ndlp, 598 lpfc_mbx_cmpl_resume_rpi, elsiocb); 599 goto out; 600 } 601 } 602 603 if (cmd == ELS_CMD_ADISC) { 604 lpfc_els_rsp_adisc_acc(vport, cmdiocb, ndlp); 605 } else { 606 lpfc_els_rsp_acc(vport, ELS_CMD_PLOGI, cmdiocb, 607 ndlp, NULL); 608 } 609 out: 610 /* If we are authenticated, move to the proper state */ 611 if (ndlp->nlp_type & NLP_FCP_TARGET) 612 lpfc_nlp_set_state(vport, ndlp, NLP_STE_MAPPED_NODE); 613 else 614 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE); 615 616 return 1; 617 } 618 /* Reject this request because invalid parameters */ 619 stat.un.b.lsRjtRsvd0 = 0; 620 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC; 621 stat.un.b.lsRjtRsnCodeExp = LSEXP_SPARM_OPTIONS; 622 stat.un.b.vendorUnique = 0; 623 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL); 624 625 /* 1 sec timeout */ 626 mod_timer(&ndlp->nlp_delayfunc, jiffies + msecs_to_jiffies(1000)); 627 628 spin_lock_irq(shost->host_lock); 629 ndlp->nlp_flag |= NLP_DELAY_TMO; 630 spin_unlock_irq(shost->host_lock); 631 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI; 632 ndlp->nlp_prev_state = ndlp->nlp_state; 633 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE); 634 return 0; 635 } 636 637 static int 638 lpfc_rcv_logo(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 639 struct lpfc_iocbq *cmdiocb, uint32_t els_cmd) 640 { 641 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 642 struct lpfc_hba *phba = vport->phba; 643 struct lpfc_vport **vports; 644 int i, active_vlink_present = 0 ; 645 646 /* Put ndlp in NPR state with 1 sec timeout for plogi, ACC logo */ 647 /* Only call LOGO ACC for first LOGO, this avoids sending unnecessary 648 * PLOGIs during LOGO storms from a device. 649 */ 650 spin_lock_irq(shost->host_lock); 651 ndlp->nlp_flag |= NLP_LOGO_ACC; 652 spin_unlock_irq(shost->host_lock); 653 if (els_cmd == ELS_CMD_PRLO) 654 lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL); 655 else 656 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL); 657 if (ndlp->nlp_DID == Fabric_DID) { 658 if (vport->port_state <= LPFC_FDISC) 659 goto out; 660 lpfc_linkdown_port(vport); 661 spin_lock_irq(shost->host_lock); 662 vport->fc_flag |= FC_VPORT_LOGO_RCVD; 663 spin_unlock_irq(shost->host_lock); 664 vports = lpfc_create_vport_work_array(phba); 665 if (vports) { 666 for (i = 0; i <= phba->max_vports && vports[i] != NULL; 667 i++) { 668 if ((!(vports[i]->fc_flag & 669 FC_VPORT_LOGO_RCVD)) && 670 (vports[i]->port_state > LPFC_FDISC)) { 671 active_vlink_present = 1; 672 break; 673 } 674 } 675 lpfc_destroy_vport_work_array(phba, vports); 676 } 677 678 /* 679 * Don't re-instantiate if vport is marked for deletion. 680 * If we are here first then vport_delete is going to wait 681 * for discovery to complete. 682 */ 683 if (!(vport->load_flag & FC_UNLOADING) && 684 active_vlink_present) { 685 /* 686 * If there are other active VLinks present, 687 * re-instantiate the Vlink using FDISC. 688 */ 689 mod_timer(&ndlp->nlp_delayfunc, 690 jiffies + msecs_to_jiffies(1000)); 691 spin_lock_irq(shost->host_lock); 692 ndlp->nlp_flag |= NLP_DELAY_TMO; 693 spin_unlock_irq(shost->host_lock); 694 ndlp->nlp_last_elscmd = ELS_CMD_FDISC; 695 vport->port_state = LPFC_FDISC; 696 } else { 697 spin_lock_irq(shost->host_lock); 698 phba->pport->fc_flag &= ~FC_LOGO_RCVD_DID_CHNG; 699 spin_unlock_irq(shost->host_lock); 700 lpfc_retry_pport_discovery(phba); 701 } 702 } else if ((!(ndlp->nlp_type & NLP_FABRIC) && 703 ((ndlp->nlp_type & NLP_FCP_TARGET) || 704 !(ndlp->nlp_type & NLP_FCP_INITIATOR))) || 705 (ndlp->nlp_state == NLP_STE_ADISC_ISSUE)) { 706 /* Only try to re-login if this is NOT a Fabric Node */ 707 mod_timer(&ndlp->nlp_delayfunc, 708 jiffies + msecs_to_jiffies(1000 * 1)); 709 spin_lock_irq(shost->host_lock); 710 ndlp->nlp_flag |= NLP_DELAY_TMO; 711 spin_unlock_irq(shost->host_lock); 712 713 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI; 714 } 715 out: 716 ndlp->nlp_prev_state = ndlp->nlp_state; 717 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE); 718 719 spin_lock_irq(shost->host_lock); 720 ndlp->nlp_flag &= ~NLP_NPR_ADISC; 721 spin_unlock_irq(shost->host_lock); 722 /* The driver has to wait until the ACC completes before it continues 723 * processing the LOGO. The action will resume in 724 * lpfc_cmpl_els_logo_acc routine. Since part of processing includes an 725 * unreg_login, the driver waits so the ACC does not get aborted. 726 */ 727 return 0; 728 } 729 730 static void 731 lpfc_rcv_prli(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 732 struct lpfc_iocbq *cmdiocb) 733 { 734 struct lpfc_hba *phba = vport->phba; 735 struct lpfc_dmabuf *pcmd; 736 uint32_t *lp; 737 PRLI *npr; 738 struct fc_rport *rport = ndlp->rport; 739 u32 roles; 740 741 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2; 742 lp = (uint32_t *) pcmd->virt; 743 npr = (PRLI *) ((uint8_t *) lp + sizeof (uint32_t)); 744 745 ndlp->nlp_type &= ~(NLP_FCP_TARGET | NLP_FCP_INITIATOR); 746 ndlp->nlp_fcp_info &= ~NLP_FCP_2_DEVICE; 747 ndlp->nlp_flag &= ~NLP_FIRSTBURST; 748 if ((npr->prliType == PRLI_FCP_TYPE) || 749 (npr->prliType == PRLI_NVME_TYPE)) { 750 if (npr->initiatorFunc) { 751 if (npr->prliType == PRLI_FCP_TYPE) 752 ndlp->nlp_type |= NLP_FCP_INITIATOR; 753 if (npr->prliType == PRLI_NVME_TYPE) 754 ndlp->nlp_type |= NLP_NVME_INITIATOR; 755 } 756 if (npr->targetFunc) { 757 if (npr->prliType == PRLI_FCP_TYPE) 758 ndlp->nlp_type |= NLP_FCP_TARGET; 759 if (npr->prliType == PRLI_NVME_TYPE) 760 ndlp->nlp_type |= NLP_NVME_TARGET; 761 if (npr->writeXferRdyDis) 762 ndlp->nlp_flag |= NLP_FIRSTBURST; 763 } 764 if (npr->Retry) 765 ndlp->nlp_fcp_info |= NLP_FCP_2_DEVICE; 766 767 /* If this driver is in nvme target mode, set the ndlp's fc4 768 * type to NVME provided the PRLI response claims NVME FC4 769 * type. Target mode does not issue gft_id so doesn't get 770 * the fc4 type set until now. 771 */ 772 if ((phba->nvmet_support) && (npr->prliType == PRLI_NVME_TYPE)) 773 ndlp->nlp_fc4_type |= NLP_FC4_NVME; 774 } 775 if (rport) { 776 /* We need to update the rport role values */ 777 roles = FC_RPORT_ROLE_UNKNOWN; 778 if (ndlp->nlp_type & NLP_FCP_INITIATOR) 779 roles |= FC_RPORT_ROLE_FCP_INITIATOR; 780 if (ndlp->nlp_type & NLP_FCP_TARGET) 781 roles |= FC_RPORT_ROLE_FCP_TARGET; 782 783 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT, 784 "rport rolechg: role:x%x did:x%x flg:x%x", 785 roles, ndlp->nlp_DID, ndlp->nlp_flag); 786 787 if (phba->cfg_enable_fc4_type != LPFC_ENABLE_NVME) 788 fc_remote_port_rolechg(rport, roles); 789 } 790 } 791 792 static uint32_t 793 lpfc_disc_set_adisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) 794 { 795 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 796 797 if (!(ndlp->nlp_flag & NLP_RPI_REGISTERED)) { 798 ndlp->nlp_flag &= ~NLP_NPR_ADISC; 799 return 0; 800 } 801 802 if (!(vport->fc_flag & FC_PT2PT)) { 803 /* Check config parameter use-adisc or FCP-2 */ 804 if ((vport->cfg_use_adisc && (vport->fc_flag & FC_RSCN_MODE)) || 805 ((ndlp->nlp_fcp_info & NLP_FCP_2_DEVICE) && 806 (ndlp->nlp_type & NLP_FCP_TARGET))) { 807 spin_lock_irq(shost->host_lock); 808 ndlp->nlp_flag |= NLP_NPR_ADISC; 809 spin_unlock_irq(shost->host_lock); 810 return 1; 811 } 812 } 813 ndlp->nlp_flag &= ~NLP_NPR_ADISC; 814 lpfc_unreg_rpi(vport, ndlp); 815 return 0; 816 } 817 818 /** 819 * lpfc_release_rpi - Release a RPI by issuing unreg_login mailbox cmd. 820 * @phba : Pointer to lpfc_hba structure. 821 * @vport: Pointer to lpfc_vport structure. 822 * @rpi : rpi to be release. 823 * 824 * This function will send a unreg_login mailbox command to the firmware 825 * to release a rpi. 826 **/ 827 void 828 lpfc_release_rpi(struct lpfc_hba *phba, 829 struct lpfc_vport *vport, 830 uint16_t rpi) 831 { 832 LPFC_MBOXQ_t *pmb; 833 int rc; 834 835 pmb = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool, 836 GFP_KERNEL); 837 if (!pmb) 838 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX, 839 "2796 mailbox memory allocation failed \n"); 840 else { 841 lpfc_unreg_login(phba, vport->vpi, rpi, pmb); 842 pmb->mbox_cmpl = lpfc_sli_def_mbox_cmpl; 843 rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT); 844 if (rc == MBX_NOT_FINISHED) 845 mempool_free(pmb, phba->mbox_mem_pool); 846 } 847 } 848 849 static uint32_t 850 lpfc_disc_illegal(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 851 void *arg, uint32_t evt) 852 { 853 struct lpfc_hba *phba; 854 LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg; 855 uint16_t rpi; 856 857 phba = vport->phba; 858 /* Release the RPI if reglogin completing */ 859 if (!(phba->pport->load_flag & FC_UNLOADING) && 860 (evt == NLP_EVT_CMPL_REG_LOGIN) && 861 (!pmb->u.mb.mbxStatus)) { 862 rpi = pmb->u.mb.un.varWords[0]; 863 lpfc_release_rpi(phba, vport, rpi); 864 } 865 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY, 866 "0271 Illegal State Transition: node x%x " 867 "event x%x, state x%x Data: x%x x%x\n", 868 ndlp->nlp_DID, evt, ndlp->nlp_state, ndlp->nlp_rpi, 869 ndlp->nlp_flag); 870 return ndlp->nlp_state; 871 } 872 873 static uint32_t 874 lpfc_cmpl_plogi_illegal(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 875 void *arg, uint32_t evt) 876 { 877 /* This transition is only legal if we previously 878 * rcv'ed a PLOGI. Since we don't want 2 discovery threads 879 * working on the same NPortID, do nothing for this thread 880 * to stop it. 881 */ 882 if (!(ndlp->nlp_flag & NLP_RCV_PLOGI)) { 883 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY, 884 "0272 Illegal State Transition: node x%x " 885 "event x%x, state x%x Data: x%x x%x\n", 886 ndlp->nlp_DID, evt, ndlp->nlp_state, ndlp->nlp_rpi, 887 ndlp->nlp_flag); 888 } 889 return ndlp->nlp_state; 890 } 891 892 /* Start of Discovery State Machine routines */ 893 894 static uint32_t 895 lpfc_rcv_plogi_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 896 void *arg, uint32_t evt) 897 { 898 struct lpfc_iocbq *cmdiocb; 899 900 cmdiocb = (struct lpfc_iocbq *) arg; 901 902 if (lpfc_rcv_plogi(vport, ndlp, cmdiocb)) { 903 return ndlp->nlp_state; 904 } 905 return NLP_STE_FREED_NODE; 906 } 907 908 static uint32_t 909 lpfc_rcv_els_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 910 void *arg, uint32_t evt) 911 { 912 lpfc_issue_els_logo(vport, ndlp, 0); 913 return ndlp->nlp_state; 914 } 915 916 static uint32_t 917 lpfc_rcv_logo_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 918 void *arg, uint32_t evt) 919 { 920 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 921 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg; 922 923 spin_lock_irq(shost->host_lock); 924 ndlp->nlp_flag |= NLP_LOGO_ACC; 925 spin_unlock_irq(shost->host_lock); 926 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL); 927 928 return ndlp->nlp_state; 929 } 930 931 static uint32_t 932 lpfc_cmpl_logo_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 933 void *arg, uint32_t evt) 934 { 935 return NLP_STE_FREED_NODE; 936 } 937 938 static uint32_t 939 lpfc_device_rm_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 940 void *arg, uint32_t evt) 941 { 942 return NLP_STE_FREED_NODE; 943 } 944 945 static uint32_t 946 lpfc_device_recov_unused_node(struct lpfc_vport *vport, 947 struct lpfc_nodelist *ndlp, 948 void *arg, uint32_t evt) 949 { 950 return ndlp->nlp_state; 951 } 952 953 static uint32_t 954 lpfc_rcv_plogi_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 955 void *arg, uint32_t evt) 956 { 957 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 958 struct lpfc_hba *phba = vport->phba; 959 struct lpfc_iocbq *cmdiocb = arg; 960 struct lpfc_dmabuf *pcmd = (struct lpfc_dmabuf *) cmdiocb->context2; 961 uint32_t *lp = (uint32_t *) pcmd->virt; 962 struct serv_parm *sp = (struct serv_parm *) (lp + 1); 963 struct ls_rjt stat; 964 int port_cmp; 965 966 memset(&stat, 0, sizeof (struct ls_rjt)); 967 968 /* For a PLOGI, we only accept if our portname is less 969 * than the remote portname. 970 */ 971 phba->fc_stat.elsLogiCol++; 972 port_cmp = memcmp(&vport->fc_portname, &sp->portName, 973 sizeof(struct lpfc_name)); 974 975 if (port_cmp >= 0) { 976 /* Reject this request because the remote node will accept 977 ours */ 978 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC; 979 stat.un.b.lsRjtRsnCodeExp = LSEXP_CMD_IN_PROGRESS; 980 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, 981 NULL); 982 } else { 983 if (lpfc_rcv_plogi(vport, ndlp, cmdiocb) && 984 (ndlp->nlp_flag & NLP_NPR_2B_DISC) && 985 (vport->num_disc_nodes)) { 986 spin_lock_irq(shost->host_lock); 987 ndlp->nlp_flag &= ~NLP_NPR_2B_DISC; 988 spin_unlock_irq(shost->host_lock); 989 /* Check if there are more PLOGIs to be sent */ 990 lpfc_more_plogi(vport); 991 if (vport->num_disc_nodes == 0) { 992 spin_lock_irq(shost->host_lock); 993 vport->fc_flag &= ~FC_NDISC_ACTIVE; 994 spin_unlock_irq(shost->host_lock); 995 lpfc_can_disctmo(vport); 996 lpfc_end_rscn(vport); 997 } 998 } 999 } /* If our portname was less */ 1000 1001 return ndlp->nlp_state; 1002 } 1003 1004 static uint32_t 1005 lpfc_rcv_prli_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 1006 void *arg, uint32_t evt) 1007 { 1008 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg; 1009 struct ls_rjt stat; 1010 1011 memset(&stat, 0, sizeof (struct ls_rjt)); 1012 stat.un.b.lsRjtRsnCode = LSRJT_LOGICAL_BSY; 1013 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE; 1014 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL); 1015 return ndlp->nlp_state; 1016 } 1017 1018 static uint32_t 1019 lpfc_rcv_logo_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 1020 void *arg, uint32_t evt) 1021 { 1022 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg; 1023 1024 /* software abort outstanding PLOGI */ 1025 lpfc_els_abort(vport->phba, ndlp); 1026 1027 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO); 1028 return ndlp->nlp_state; 1029 } 1030 1031 static uint32_t 1032 lpfc_rcv_els_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 1033 void *arg, uint32_t evt) 1034 { 1035 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 1036 struct lpfc_hba *phba = vport->phba; 1037 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg; 1038 1039 /* software abort outstanding PLOGI */ 1040 lpfc_els_abort(phba, ndlp); 1041 1042 if (evt == NLP_EVT_RCV_LOGO) { 1043 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL); 1044 } else { 1045 lpfc_issue_els_logo(vport, ndlp, 0); 1046 } 1047 1048 /* Put ndlp in npr state set plogi timer for 1 sec */ 1049 mod_timer(&ndlp->nlp_delayfunc, jiffies + msecs_to_jiffies(1000 * 1)); 1050 spin_lock_irq(shost->host_lock); 1051 ndlp->nlp_flag |= NLP_DELAY_TMO; 1052 spin_unlock_irq(shost->host_lock); 1053 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI; 1054 ndlp->nlp_prev_state = NLP_STE_PLOGI_ISSUE; 1055 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE); 1056 1057 return ndlp->nlp_state; 1058 } 1059 1060 static uint32_t 1061 lpfc_cmpl_plogi_plogi_issue(struct lpfc_vport *vport, 1062 struct lpfc_nodelist *ndlp, 1063 void *arg, 1064 uint32_t evt) 1065 { 1066 struct lpfc_hba *phba = vport->phba; 1067 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 1068 struct lpfc_iocbq *cmdiocb, *rspiocb; 1069 struct lpfc_dmabuf *pcmd, *prsp, *mp; 1070 uint32_t *lp; 1071 uint32_t vid, flag; 1072 IOCB_t *irsp; 1073 struct serv_parm *sp; 1074 uint32_t ed_tov; 1075 LPFC_MBOXQ_t *mbox; 1076 int rc; 1077 1078 cmdiocb = (struct lpfc_iocbq *) arg; 1079 rspiocb = cmdiocb->context_un.rsp_iocb; 1080 1081 if (ndlp->nlp_flag & NLP_ACC_REGLOGIN) { 1082 /* Recovery from PLOGI collision logic */ 1083 return ndlp->nlp_state; 1084 } 1085 1086 irsp = &rspiocb->iocb; 1087 1088 if (irsp->ulpStatus) 1089 goto out; 1090 1091 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2; 1092 1093 prsp = list_get_first(&pcmd->list, struct lpfc_dmabuf, list); 1094 if (!prsp) 1095 goto out; 1096 1097 lp = (uint32_t *) prsp->virt; 1098 sp = (struct serv_parm *) ((uint8_t *) lp + sizeof (uint32_t)); 1099 1100 /* Some switches have FDMI servers returning 0 for WWN */ 1101 if ((ndlp->nlp_DID != FDMI_DID) && 1102 (wwn_to_u64(sp->portName.u.wwn) == 0 || 1103 wwn_to_u64(sp->nodeName.u.wwn) == 0)) { 1104 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS, 1105 "0142 PLOGI RSP: Invalid WWN.\n"); 1106 goto out; 1107 } 1108 if (!lpfc_check_sparm(vport, ndlp, sp, CLASS3, 0)) 1109 goto out; 1110 /* PLOGI chkparm OK */ 1111 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, 1112 "0121 PLOGI chkparm OK Data: x%x x%x x%x x%x\n", 1113 ndlp->nlp_DID, ndlp->nlp_state, 1114 ndlp->nlp_flag, ndlp->nlp_rpi); 1115 if (vport->cfg_fcp_class == 2 && (sp->cls2.classValid)) 1116 ndlp->nlp_fcp_info |= CLASS2; 1117 else 1118 ndlp->nlp_fcp_info |= CLASS3; 1119 1120 ndlp->nlp_class_sup = 0; 1121 if (sp->cls1.classValid) 1122 ndlp->nlp_class_sup |= FC_COS_CLASS1; 1123 if (sp->cls2.classValid) 1124 ndlp->nlp_class_sup |= FC_COS_CLASS2; 1125 if (sp->cls3.classValid) 1126 ndlp->nlp_class_sup |= FC_COS_CLASS3; 1127 if (sp->cls4.classValid) 1128 ndlp->nlp_class_sup |= FC_COS_CLASS4; 1129 ndlp->nlp_maxframe = 1130 ((sp->cmn.bbRcvSizeMsb & 0x0F) << 8) | sp->cmn.bbRcvSizeLsb; 1131 1132 if ((vport->fc_flag & FC_PT2PT) && 1133 (vport->fc_flag & FC_PT2PT_PLOGI)) { 1134 ed_tov = be32_to_cpu(sp->cmn.e_d_tov); 1135 if (sp->cmn.edtovResolution) { 1136 /* E_D_TOV ticks are in nanoseconds */ 1137 ed_tov = (phba->fc_edtov + 999999) / 1000000; 1138 } 1139 1140 ndlp->nlp_flag &= ~NLP_SUPPRESS_RSP; 1141 if ((phba->sli.sli_flag & LPFC_SLI_SUPPRESS_RSP) && 1142 sp->cmn.valid_vendor_ver_level) { 1143 vid = be32_to_cpu(sp->un.vv.vid); 1144 flag = be32_to_cpu(sp->un.vv.flags); 1145 if ((vid == LPFC_VV_EMLX_ID) && 1146 (flag & LPFC_VV_SUPPRESS_RSP)) 1147 ndlp->nlp_flag |= NLP_SUPPRESS_RSP; 1148 } 1149 1150 /* 1151 * Use the larger EDTOV 1152 * RATOV = 2 * EDTOV for pt-to-pt 1153 */ 1154 if (ed_tov > phba->fc_edtov) 1155 phba->fc_edtov = ed_tov; 1156 phba->fc_ratov = (2 * phba->fc_edtov) / 1000; 1157 1158 memcpy(&phba->fc_fabparam, sp, sizeof(struct serv_parm)); 1159 1160 /* Issue config_link / reg_vfi to account for updated TOV's */ 1161 if (phba->sli_rev == LPFC_SLI_REV4) { 1162 lpfc_issue_reg_vfi(vport); 1163 } else { 1164 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 1165 if (!mbox) { 1166 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS, 1167 "0133 PLOGI: no memory " 1168 "for config_link " 1169 "Data: x%x x%x x%x x%x\n", 1170 ndlp->nlp_DID, ndlp->nlp_state, 1171 ndlp->nlp_flag, ndlp->nlp_rpi); 1172 goto out; 1173 } 1174 1175 lpfc_config_link(phba, mbox); 1176 1177 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl; 1178 mbox->vport = vport; 1179 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT); 1180 if (rc == MBX_NOT_FINISHED) { 1181 mempool_free(mbox, phba->mbox_mem_pool); 1182 goto out; 1183 } 1184 } 1185 } 1186 1187 lpfc_unreg_rpi(vport, ndlp); 1188 1189 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 1190 if (!mbox) { 1191 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS, 1192 "0018 PLOGI: no memory for reg_login " 1193 "Data: x%x x%x x%x x%x\n", 1194 ndlp->nlp_DID, ndlp->nlp_state, 1195 ndlp->nlp_flag, ndlp->nlp_rpi); 1196 goto out; 1197 } 1198 1199 if (lpfc_reg_rpi(phba, vport->vpi, irsp->un.elsreq64.remoteID, 1200 (uint8_t *) sp, mbox, ndlp->nlp_rpi) == 0) { 1201 switch (ndlp->nlp_DID) { 1202 case NameServer_DID: 1203 mbox->mbox_cmpl = lpfc_mbx_cmpl_ns_reg_login; 1204 break; 1205 case FDMI_DID: 1206 mbox->mbox_cmpl = lpfc_mbx_cmpl_fdmi_reg_login; 1207 break; 1208 default: 1209 ndlp->nlp_flag |= NLP_REG_LOGIN_SEND; 1210 mbox->mbox_cmpl = lpfc_mbx_cmpl_reg_login; 1211 } 1212 mbox->context2 = lpfc_nlp_get(ndlp); 1213 mbox->vport = vport; 1214 if (lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT) 1215 != MBX_NOT_FINISHED) { 1216 lpfc_nlp_set_state(vport, ndlp, 1217 NLP_STE_REG_LOGIN_ISSUE); 1218 return ndlp->nlp_state; 1219 } 1220 if (ndlp->nlp_flag & NLP_REG_LOGIN_SEND) 1221 ndlp->nlp_flag &= ~NLP_REG_LOGIN_SEND; 1222 /* decrement node reference count to the failed mbox 1223 * command 1224 */ 1225 lpfc_nlp_put(ndlp); 1226 mp = (struct lpfc_dmabuf *) mbox->context1; 1227 lpfc_mbuf_free(phba, mp->virt, mp->phys); 1228 kfree(mp); 1229 mempool_free(mbox, phba->mbox_mem_pool); 1230 1231 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS, 1232 "0134 PLOGI: cannot issue reg_login " 1233 "Data: x%x x%x x%x x%x\n", 1234 ndlp->nlp_DID, ndlp->nlp_state, 1235 ndlp->nlp_flag, ndlp->nlp_rpi); 1236 } else { 1237 mempool_free(mbox, phba->mbox_mem_pool); 1238 1239 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS, 1240 "0135 PLOGI: cannot format reg_login " 1241 "Data: x%x x%x x%x x%x\n", 1242 ndlp->nlp_DID, ndlp->nlp_state, 1243 ndlp->nlp_flag, ndlp->nlp_rpi); 1244 } 1245 1246 1247 out: 1248 if (ndlp->nlp_DID == NameServer_DID) { 1249 lpfc_vport_set_state(vport, FC_VPORT_FAILED); 1250 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS, 1251 "0261 Cannot Register NameServer login\n"); 1252 } 1253 1254 /* 1255 ** In case the node reference counter does not go to zero, ensure that 1256 ** the stale state for the node is not processed. 1257 */ 1258 1259 ndlp->nlp_prev_state = ndlp->nlp_state; 1260 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE); 1261 spin_lock_irq(shost->host_lock); 1262 ndlp->nlp_flag |= NLP_DEFER_RM; 1263 spin_unlock_irq(shost->host_lock); 1264 return NLP_STE_FREED_NODE; 1265 } 1266 1267 static uint32_t 1268 lpfc_cmpl_logo_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 1269 void *arg, uint32_t evt) 1270 { 1271 return ndlp->nlp_state; 1272 } 1273 1274 static uint32_t 1275 lpfc_cmpl_reglogin_plogi_issue(struct lpfc_vport *vport, 1276 struct lpfc_nodelist *ndlp, void *arg, uint32_t evt) 1277 { 1278 struct lpfc_hba *phba; 1279 LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg; 1280 MAILBOX_t *mb = &pmb->u.mb; 1281 uint16_t rpi; 1282 1283 phba = vport->phba; 1284 /* Release the RPI */ 1285 if (!(phba->pport->load_flag & FC_UNLOADING) && 1286 !mb->mbxStatus) { 1287 rpi = pmb->u.mb.un.varWords[0]; 1288 lpfc_release_rpi(phba, vport, rpi); 1289 } 1290 return ndlp->nlp_state; 1291 } 1292 1293 static uint32_t 1294 lpfc_device_rm_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 1295 void *arg, uint32_t evt) 1296 { 1297 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 1298 1299 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) { 1300 spin_lock_irq(shost->host_lock); 1301 ndlp->nlp_flag |= NLP_NODEV_REMOVE; 1302 spin_unlock_irq(shost->host_lock); 1303 return ndlp->nlp_state; 1304 } else { 1305 /* software abort outstanding PLOGI */ 1306 lpfc_els_abort(vport->phba, ndlp); 1307 1308 lpfc_drop_node(vport, ndlp); 1309 return NLP_STE_FREED_NODE; 1310 } 1311 } 1312 1313 static uint32_t 1314 lpfc_device_recov_plogi_issue(struct lpfc_vport *vport, 1315 struct lpfc_nodelist *ndlp, 1316 void *arg, 1317 uint32_t evt) 1318 { 1319 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 1320 struct lpfc_hba *phba = vport->phba; 1321 1322 /* Don't do anything that will mess up processing of the 1323 * previous RSCN. 1324 */ 1325 if (vport->fc_flag & FC_RSCN_DEFERRED) 1326 return ndlp->nlp_state; 1327 1328 /* software abort outstanding PLOGI */ 1329 lpfc_els_abort(phba, ndlp); 1330 1331 ndlp->nlp_prev_state = NLP_STE_PLOGI_ISSUE; 1332 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE); 1333 spin_lock_irq(shost->host_lock); 1334 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC); 1335 spin_unlock_irq(shost->host_lock); 1336 1337 return ndlp->nlp_state; 1338 } 1339 1340 static uint32_t 1341 lpfc_rcv_plogi_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 1342 void *arg, uint32_t evt) 1343 { 1344 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 1345 struct lpfc_hba *phba = vport->phba; 1346 struct lpfc_iocbq *cmdiocb; 1347 1348 /* software abort outstanding ADISC */ 1349 lpfc_els_abort(phba, ndlp); 1350 1351 cmdiocb = (struct lpfc_iocbq *) arg; 1352 1353 if (lpfc_rcv_plogi(vport, ndlp, cmdiocb)) { 1354 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) { 1355 spin_lock_irq(shost->host_lock); 1356 ndlp->nlp_flag &= ~NLP_NPR_2B_DISC; 1357 spin_unlock_irq(shost->host_lock); 1358 if (vport->num_disc_nodes) 1359 lpfc_more_adisc(vport); 1360 } 1361 return ndlp->nlp_state; 1362 } 1363 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE; 1364 lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0); 1365 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE); 1366 1367 return ndlp->nlp_state; 1368 } 1369 1370 static uint32_t 1371 lpfc_rcv_prli_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 1372 void *arg, uint32_t evt) 1373 { 1374 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg; 1375 1376 lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp); 1377 return ndlp->nlp_state; 1378 } 1379 1380 static uint32_t 1381 lpfc_rcv_logo_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 1382 void *arg, uint32_t evt) 1383 { 1384 struct lpfc_hba *phba = vport->phba; 1385 struct lpfc_iocbq *cmdiocb; 1386 1387 cmdiocb = (struct lpfc_iocbq *) arg; 1388 1389 /* software abort outstanding ADISC */ 1390 lpfc_els_abort(phba, ndlp); 1391 1392 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO); 1393 return ndlp->nlp_state; 1394 } 1395 1396 static uint32_t 1397 lpfc_rcv_padisc_adisc_issue(struct lpfc_vport *vport, 1398 struct lpfc_nodelist *ndlp, 1399 void *arg, uint32_t evt) 1400 { 1401 struct lpfc_iocbq *cmdiocb; 1402 1403 cmdiocb = (struct lpfc_iocbq *) arg; 1404 1405 lpfc_rcv_padisc(vport, ndlp, cmdiocb); 1406 return ndlp->nlp_state; 1407 } 1408 1409 static uint32_t 1410 lpfc_rcv_prlo_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 1411 void *arg, uint32_t evt) 1412 { 1413 struct lpfc_iocbq *cmdiocb; 1414 1415 cmdiocb = (struct lpfc_iocbq *) arg; 1416 1417 /* Treat like rcv logo */ 1418 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_PRLO); 1419 return ndlp->nlp_state; 1420 } 1421 1422 static uint32_t 1423 lpfc_cmpl_adisc_adisc_issue(struct lpfc_vport *vport, 1424 struct lpfc_nodelist *ndlp, 1425 void *arg, uint32_t evt) 1426 { 1427 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 1428 struct lpfc_hba *phba = vport->phba; 1429 struct lpfc_iocbq *cmdiocb, *rspiocb; 1430 IOCB_t *irsp; 1431 ADISC *ap; 1432 int rc; 1433 1434 cmdiocb = (struct lpfc_iocbq *) arg; 1435 rspiocb = cmdiocb->context_un.rsp_iocb; 1436 1437 ap = (ADISC *)lpfc_check_elscmpl_iocb(phba, cmdiocb, rspiocb); 1438 irsp = &rspiocb->iocb; 1439 1440 if ((irsp->ulpStatus) || 1441 (!lpfc_check_adisc(vport, ndlp, &ap->nodeName, &ap->portName))) { 1442 /* 1 sec timeout */ 1443 mod_timer(&ndlp->nlp_delayfunc, 1444 jiffies + msecs_to_jiffies(1000)); 1445 spin_lock_irq(shost->host_lock); 1446 ndlp->nlp_flag |= NLP_DELAY_TMO; 1447 spin_unlock_irq(shost->host_lock); 1448 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI; 1449 1450 memset(&ndlp->nlp_nodename, 0, sizeof(struct lpfc_name)); 1451 memset(&ndlp->nlp_portname, 0, sizeof(struct lpfc_name)); 1452 1453 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE; 1454 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE); 1455 lpfc_unreg_rpi(vport, ndlp); 1456 return ndlp->nlp_state; 1457 } 1458 1459 if (phba->sli_rev == LPFC_SLI_REV4) { 1460 rc = lpfc_sli4_resume_rpi(ndlp, NULL, NULL); 1461 if (rc) { 1462 /* Stay in state and retry. */ 1463 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE; 1464 return ndlp->nlp_state; 1465 } 1466 } 1467 1468 if (ndlp->nlp_type & NLP_FCP_TARGET) { 1469 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE; 1470 lpfc_nlp_set_state(vport, ndlp, NLP_STE_MAPPED_NODE); 1471 } else { 1472 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE; 1473 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE); 1474 } 1475 1476 return ndlp->nlp_state; 1477 } 1478 1479 static uint32_t 1480 lpfc_device_rm_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 1481 void *arg, uint32_t evt) 1482 { 1483 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 1484 1485 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) { 1486 spin_lock_irq(shost->host_lock); 1487 ndlp->nlp_flag |= NLP_NODEV_REMOVE; 1488 spin_unlock_irq(shost->host_lock); 1489 return ndlp->nlp_state; 1490 } else { 1491 /* software abort outstanding ADISC */ 1492 lpfc_els_abort(vport->phba, ndlp); 1493 1494 lpfc_drop_node(vport, ndlp); 1495 return NLP_STE_FREED_NODE; 1496 } 1497 } 1498 1499 static uint32_t 1500 lpfc_device_recov_adisc_issue(struct lpfc_vport *vport, 1501 struct lpfc_nodelist *ndlp, 1502 void *arg, 1503 uint32_t evt) 1504 { 1505 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 1506 struct lpfc_hba *phba = vport->phba; 1507 1508 /* Don't do anything that will mess up processing of the 1509 * previous RSCN. 1510 */ 1511 if (vport->fc_flag & FC_RSCN_DEFERRED) 1512 return ndlp->nlp_state; 1513 1514 /* software abort outstanding ADISC */ 1515 lpfc_els_abort(phba, ndlp); 1516 1517 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE; 1518 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE); 1519 spin_lock_irq(shost->host_lock); 1520 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC); 1521 spin_unlock_irq(shost->host_lock); 1522 lpfc_disc_set_adisc(vport, ndlp); 1523 return ndlp->nlp_state; 1524 } 1525 1526 static uint32_t 1527 lpfc_rcv_plogi_reglogin_issue(struct lpfc_vport *vport, 1528 struct lpfc_nodelist *ndlp, 1529 void *arg, 1530 uint32_t evt) 1531 { 1532 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg; 1533 1534 lpfc_rcv_plogi(vport, ndlp, cmdiocb); 1535 return ndlp->nlp_state; 1536 } 1537 1538 static uint32_t 1539 lpfc_rcv_prli_reglogin_issue(struct lpfc_vport *vport, 1540 struct lpfc_nodelist *ndlp, 1541 void *arg, 1542 uint32_t evt) 1543 { 1544 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg; 1545 struct ls_rjt stat; 1546 1547 if (vport->phba->nvmet_support) { 1548 /* NVME Target mode. Handle and respond to the PRLI and 1549 * transition to UNMAPPED provided the RPI has completed 1550 * registration. 1551 */ 1552 if (ndlp->nlp_flag & NLP_RPI_REGISTERED) { 1553 lpfc_rcv_prli(vport, ndlp, cmdiocb); 1554 lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp); 1555 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE); 1556 } else { 1557 /* RPI registration has not completed. Reject the PRLI 1558 * to prevent an illegal state transition when the 1559 * rpi registration does complete. 1560 */ 1561 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NVME_DISC, 1562 "6115 NVMET ndlp rpi %d state " 1563 "unknown, state x%x flags x%08x\n", 1564 ndlp->nlp_rpi, ndlp->nlp_state, 1565 ndlp->nlp_flag); 1566 memset(&stat, 0, sizeof(struct ls_rjt)); 1567 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC; 1568 stat.un.b.lsRjtRsnCodeExp = LSEXP_CMD_IN_PROGRESS; 1569 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, 1570 ndlp, NULL); 1571 } 1572 } else { 1573 /* Initiator mode. */ 1574 lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp); 1575 } 1576 1577 return ndlp->nlp_state; 1578 } 1579 1580 static uint32_t 1581 lpfc_rcv_logo_reglogin_issue(struct lpfc_vport *vport, 1582 struct lpfc_nodelist *ndlp, 1583 void *arg, 1584 uint32_t evt) 1585 { 1586 struct lpfc_hba *phba = vport->phba; 1587 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg; 1588 LPFC_MBOXQ_t *mb; 1589 LPFC_MBOXQ_t *nextmb; 1590 struct lpfc_dmabuf *mp; 1591 1592 cmdiocb = (struct lpfc_iocbq *) arg; 1593 1594 /* cleanup any ndlp on mbox q waiting for reglogin cmpl */ 1595 if ((mb = phba->sli.mbox_active)) { 1596 if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) && 1597 (ndlp == (struct lpfc_nodelist *) mb->context2)) { 1598 ndlp->nlp_flag &= ~NLP_REG_LOGIN_SEND; 1599 lpfc_nlp_put(ndlp); 1600 mb->context2 = NULL; 1601 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl; 1602 } 1603 } 1604 1605 spin_lock_irq(&phba->hbalock); 1606 list_for_each_entry_safe(mb, nextmb, &phba->sli.mboxq, list) { 1607 if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) && 1608 (ndlp == (struct lpfc_nodelist *) mb->context2)) { 1609 mp = (struct lpfc_dmabuf *) (mb->context1); 1610 if (mp) { 1611 __lpfc_mbuf_free(phba, mp->virt, mp->phys); 1612 kfree(mp); 1613 } 1614 ndlp->nlp_flag &= ~NLP_REG_LOGIN_SEND; 1615 lpfc_nlp_put(ndlp); 1616 list_del(&mb->list); 1617 phba->sli.mboxq_cnt--; 1618 mempool_free(mb, phba->mbox_mem_pool); 1619 } 1620 } 1621 spin_unlock_irq(&phba->hbalock); 1622 1623 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO); 1624 return ndlp->nlp_state; 1625 } 1626 1627 static uint32_t 1628 lpfc_rcv_padisc_reglogin_issue(struct lpfc_vport *vport, 1629 struct lpfc_nodelist *ndlp, 1630 void *arg, 1631 uint32_t evt) 1632 { 1633 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg; 1634 1635 lpfc_rcv_padisc(vport, ndlp, cmdiocb); 1636 return ndlp->nlp_state; 1637 } 1638 1639 static uint32_t 1640 lpfc_rcv_prlo_reglogin_issue(struct lpfc_vport *vport, 1641 struct lpfc_nodelist *ndlp, 1642 void *arg, 1643 uint32_t evt) 1644 { 1645 struct lpfc_iocbq *cmdiocb; 1646 1647 cmdiocb = (struct lpfc_iocbq *) arg; 1648 lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL); 1649 return ndlp->nlp_state; 1650 } 1651 1652 static uint32_t 1653 lpfc_cmpl_reglogin_reglogin_issue(struct lpfc_vport *vport, 1654 struct lpfc_nodelist *ndlp, 1655 void *arg, 1656 uint32_t evt) 1657 { 1658 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 1659 struct lpfc_hba *phba = vport->phba; 1660 LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg; 1661 MAILBOX_t *mb = &pmb->u.mb; 1662 uint32_t did = mb->un.varWords[1]; 1663 int rc = 0; 1664 1665 if (mb->mbxStatus) { 1666 /* RegLogin failed */ 1667 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY, 1668 "0246 RegLogin failed Data: x%x x%x x%x x%x " 1669 "x%x\n", 1670 did, mb->mbxStatus, vport->port_state, 1671 mb->un.varRegLogin.vpi, 1672 mb->un.varRegLogin.rpi); 1673 /* 1674 * If RegLogin failed due to lack of HBA resources do not 1675 * retry discovery. 1676 */ 1677 if (mb->mbxStatus == MBXERR_RPI_FULL) { 1678 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE; 1679 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE); 1680 return ndlp->nlp_state; 1681 } 1682 1683 /* Put ndlp in npr state set plogi timer for 1 sec */ 1684 mod_timer(&ndlp->nlp_delayfunc, 1685 jiffies + msecs_to_jiffies(1000 * 1)); 1686 spin_lock_irq(shost->host_lock); 1687 ndlp->nlp_flag |= NLP_DELAY_TMO; 1688 spin_unlock_irq(shost->host_lock); 1689 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI; 1690 1691 lpfc_issue_els_logo(vport, ndlp, 0); 1692 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE; 1693 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE); 1694 return ndlp->nlp_state; 1695 } 1696 1697 /* SLI4 ports have preallocated logical rpis. */ 1698 if (phba->sli_rev < LPFC_SLI_REV4) 1699 ndlp->nlp_rpi = mb->un.varWords[0]; 1700 1701 ndlp->nlp_flag |= NLP_RPI_REGISTERED; 1702 1703 /* Only if we are not a fabric nport do we issue PRLI */ 1704 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, 1705 "3066 RegLogin Complete on x%x x%x x%x\n", 1706 did, ndlp->nlp_type, ndlp->nlp_fc4_type); 1707 if (!(ndlp->nlp_type & NLP_FABRIC) && 1708 (phba->nvmet_support == 0)) { 1709 /* The driver supports FCP and NVME concurrently. If the 1710 * ndlp's nlp_fc4_type is still zero, the driver doesn't 1711 * know what PRLI to send yet. Figure that out now and 1712 * call PRLI depending on the outcome. 1713 */ 1714 if (vport->fc_flag & FC_PT2PT) { 1715 /* If we are pt2pt, there is no Fabric to determine 1716 * the FC4 type of the remote nport. So if NVME 1717 * is configured try it. 1718 */ 1719 ndlp->nlp_fc4_type |= NLP_FC4_FCP; 1720 if ((phba->cfg_enable_fc4_type == LPFC_ENABLE_BOTH) || 1721 (phba->cfg_enable_fc4_type == LPFC_ENABLE_NVME)) { 1722 ndlp->nlp_fc4_type |= NLP_FC4_NVME; 1723 /* We need to update the localport also */ 1724 lpfc_nvme_update_localport(vport); 1725 } 1726 1727 } else if (ndlp->nlp_fc4_type == 0) { 1728 rc = lpfc_ns_cmd(vport, SLI_CTNS_GFT_ID, 1729 0, ndlp->nlp_DID); 1730 return ndlp->nlp_state; 1731 } 1732 1733 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE; 1734 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PRLI_ISSUE); 1735 lpfc_issue_els_prli(vport, ndlp, 0); 1736 } else { 1737 if ((vport->fc_flag & FC_PT2PT) && phba->nvmet_support) 1738 phba->targetport->port_id = vport->fc_myDID; 1739 1740 /* Only Fabric ports should transition. NVME target 1741 * must complete PRLI. 1742 */ 1743 if (ndlp->nlp_type & NLP_FABRIC) { 1744 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE; 1745 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE); 1746 } 1747 } 1748 return ndlp->nlp_state; 1749 } 1750 1751 static uint32_t 1752 lpfc_device_rm_reglogin_issue(struct lpfc_vport *vport, 1753 struct lpfc_nodelist *ndlp, 1754 void *arg, 1755 uint32_t evt) 1756 { 1757 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 1758 1759 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) { 1760 spin_lock_irq(shost->host_lock); 1761 ndlp->nlp_flag |= NLP_NODEV_REMOVE; 1762 spin_unlock_irq(shost->host_lock); 1763 return ndlp->nlp_state; 1764 } else { 1765 lpfc_drop_node(vport, ndlp); 1766 return NLP_STE_FREED_NODE; 1767 } 1768 } 1769 1770 static uint32_t 1771 lpfc_device_recov_reglogin_issue(struct lpfc_vport *vport, 1772 struct lpfc_nodelist *ndlp, 1773 void *arg, 1774 uint32_t evt) 1775 { 1776 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 1777 1778 /* Don't do anything that will mess up processing of the 1779 * previous RSCN. 1780 */ 1781 if (vport->fc_flag & FC_RSCN_DEFERRED) 1782 return ndlp->nlp_state; 1783 1784 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE; 1785 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE); 1786 spin_lock_irq(shost->host_lock); 1787 1788 /* If we are a target we won't immediately transition into PRLI, 1789 * so if REG_LOGIN already completed we don't need to ignore it. 1790 */ 1791 if (!(ndlp->nlp_flag & NLP_RPI_REGISTERED) || 1792 !vport->phba->nvmet_support) 1793 ndlp->nlp_flag |= NLP_IGNR_REG_CMPL; 1794 1795 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC); 1796 spin_unlock_irq(shost->host_lock); 1797 lpfc_disc_set_adisc(vport, ndlp); 1798 return ndlp->nlp_state; 1799 } 1800 1801 static uint32_t 1802 lpfc_rcv_plogi_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 1803 void *arg, uint32_t evt) 1804 { 1805 struct lpfc_iocbq *cmdiocb; 1806 1807 cmdiocb = (struct lpfc_iocbq *) arg; 1808 1809 lpfc_rcv_plogi(vport, ndlp, cmdiocb); 1810 return ndlp->nlp_state; 1811 } 1812 1813 static uint32_t 1814 lpfc_rcv_prli_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 1815 void *arg, uint32_t evt) 1816 { 1817 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg; 1818 1819 lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp); 1820 return ndlp->nlp_state; 1821 } 1822 1823 static uint32_t 1824 lpfc_rcv_logo_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 1825 void *arg, uint32_t evt) 1826 { 1827 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg; 1828 1829 /* Software abort outstanding PRLI before sending acc */ 1830 lpfc_els_abort(vport->phba, ndlp); 1831 1832 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO); 1833 return ndlp->nlp_state; 1834 } 1835 1836 static uint32_t 1837 lpfc_rcv_padisc_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 1838 void *arg, uint32_t evt) 1839 { 1840 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg; 1841 1842 lpfc_rcv_padisc(vport, ndlp, cmdiocb); 1843 return ndlp->nlp_state; 1844 } 1845 1846 /* This routine is envoked when we rcv a PRLO request from a nport 1847 * we are logged into. We should send back a PRLO rsp setting the 1848 * appropriate bits. 1849 * NEXT STATE = PRLI_ISSUE 1850 */ 1851 static uint32_t 1852 lpfc_rcv_prlo_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 1853 void *arg, uint32_t evt) 1854 { 1855 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg; 1856 1857 lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL); 1858 return ndlp->nlp_state; 1859 } 1860 1861 static uint32_t 1862 lpfc_cmpl_prli_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 1863 void *arg, uint32_t evt) 1864 { 1865 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 1866 struct lpfc_iocbq *cmdiocb, *rspiocb; 1867 struct lpfc_hba *phba = vport->phba; 1868 IOCB_t *irsp; 1869 PRLI *npr; 1870 struct lpfc_nvme_prli *nvpr; 1871 void *temp_ptr; 1872 1873 cmdiocb = (struct lpfc_iocbq *) arg; 1874 rspiocb = cmdiocb->context_un.rsp_iocb; 1875 1876 /* A solicited PRLI is either FCP or NVME. The PRLI cmd/rsp 1877 * format is different so NULL the two PRLI types so that the 1878 * driver correctly gets the correct context. 1879 */ 1880 npr = NULL; 1881 nvpr = NULL; 1882 temp_ptr = lpfc_check_elscmpl_iocb(phba, cmdiocb, rspiocb); 1883 if (cmdiocb->iocb_flag & LPFC_PRLI_FCP_REQ) 1884 npr = (PRLI *) temp_ptr; 1885 else if (cmdiocb->iocb_flag & LPFC_PRLI_NVME_REQ) 1886 nvpr = (struct lpfc_nvme_prli *) temp_ptr; 1887 1888 irsp = &rspiocb->iocb; 1889 if (irsp->ulpStatus) { 1890 if ((vport->port_type == LPFC_NPIV_PORT) && 1891 vport->cfg_restrict_login) { 1892 goto out; 1893 } 1894 1895 /* The LS Req had some error. Don't let this be a 1896 * target. 1897 */ 1898 if ((ndlp->fc4_prli_sent == 1) && 1899 (ndlp->nlp_state == NLP_STE_PRLI_ISSUE) && 1900 (ndlp->nlp_type & (NLP_FCP_TARGET | NLP_FCP_INITIATOR))) 1901 /* The FCP PRLI completed successfully but 1902 * the NVME PRLI failed. Since they are sent in 1903 * succession, allow the FCP to complete. 1904 */ 1905 goto out_err; 1906 1907 ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE; 1908 ndlp->nlp_type |= NLP_FCP_INITIATOR; 1909 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE); 1910 return ndlp->nlp_state; 1911 } 1912 1913 /* Check out PRLI rsp */ 1914 ndlp->nlp_type &= ~(NLP_FCP_TARGET | NLP_FCP_INITIATOR); 1915 ndlp->nlp_fcp_info &= ~NLP_FCP_2_DEVICE; 1916 1917 /* NVME or FCP first burst must be negotiated for each PRLI. */ 1918 ndlp->nlp_flag &= ~NLP_FIRSTBURST; 1919 ndlp->nvme_fb_size = 0; 1920 if (npr && (npr->acceptRspCode == PRLI_REQ_EXECUTED) && 1921 (npr->prliType == PRLI_FCP_TYPE)) { 1922 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_DISC, 1923 "6028 FCP NPR PRLI Cmpl Init %d Target %d\n", 1924 npr->initiatorFunc, 1925 npr->targetFunc); 1926 if (npr->initiatorFunc) 1927 ndlp->nlp_type |= NLP_FCP_INITIATOR; 1928 if (npr->targetFunc) { 1929 ndlp->nlp_type |= NLP_FCP_TARGET; 1930 if (npr->writeXferRdyDis) 1931 ndlp->nlp_flag |= NLP_FIRSTBURST; 1932 } 1933 if (npr->Retry) 1934 ndlp->nlp_fcp_info |= NLP_FCP_2_DEVICE; 1935 1936 /* PRLI completed. Decrement count. */ 1937 ndlp->fc4_prli_sent--; 1938 } else if (nvpr && 1939 (bf_get_be32(prli_acc_rsp_code, nvpr) == 1940 PRLI_REQ_EXECUTED) && 1941 (bf_get_be32(prli_type_code, nvpr) == 1942 PRLI_NVME_TYPE)) { 1943 1944 /* Complete setting up the remote ndlp personality. */ 1945 if (bf_get_be32(prli_init, nvpr)) 1946 ndlp->nlp_type |= NLP_NVME_INITIATOR; 1947 1948 /* Target driver cannot solicit NVME FB. */ 1949 if (bf_get_be32(prli_tgt, nvpr)) { 1950 /* Complete the nvme target roles. The transport 1951 * needs to know if the rport is capable of 1952 * discovery in addition to its role. 1953 */ 1954 ndlp->nlp_type |= NLP_NVME_TARGET; 1955 if (bf_get_be32(prli_disc, nvpr)) 1956 ndlp->nlp_type |= NLP_NVME_DISCOVERY; 1957 if ((bf_get_be32(prli_fba, nvpr) == 1) && 1958 (bf_get_be32(prli_fb_sz, nvpr) > 0) && 1959 (phba->cfg_nvme_enable_fb) && 1960 (!phba->nvmet_support)) { 1961 /* Both sides support FB. The target's first 1962 * burst size is a 512 byte encoded value. 1963 */ 1964 ndlp->nlp_flag |= NLP_FIRSTBURST; 1965 ndlp->nvme_fb_size = bf_get_be32(prli_fb_sz, 1966 nvpr); 1967 } 1968 } 1969 1970 if (bf_get_be32(prli_recov, nvpr)) 1971 ndlp->nlp_fcp_info |= NLP_FCP_2_DEVICE; 1972 1973 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_DISC, 1974 "6029 NVME PRLI Cmpl w1 x%08x " 1975 "w4 x%08x w5 x%08x flag x%x, " 1976 "fcp_info x%x nlp_type x%x\n", 1977 be32_to_cpu(nvpr->word1), 1978 be32_to_cpu(nvpr->word4), 1979 be32_to_cpu(nvpr->word5), 1980 ndlp->nlp_flag, ndlp->nlp_fcp_info, 1981 ndlp->nlp_type); 1982 /* PRLI completed. Decrement count. */ 1983 ndlp->fc4_prli_sent--; 1984 } 1985 if (!(ndlp->nlp_type & NLP_FCP_TARGET) && 1986 (vport->port_type == LPFC_NPIV_PORT) && 1987 vport->cfg_restrict_login) { 1988 out: 1989 spin_lock_irq(shost->host_lock); 1990 ndlp->nlp_flag |= NLP_TARGET_REMOVE; 1991 spin_unlock_irq(shost->host_lock); 1992 lpfc_issue_els_logo(vport, ndlp, 0); 1993 1994 ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE; 1995 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE); 1996 return ndlp->nlp_state; 1997 } 1998 1999 out_err: 2000 /* The ndlp state cannot move to MAPPED or UNMAPPED before all PRLIs 2001 * are complete. 2002 */ 2003 if (ndlp->fc4_prli_sent == 0) { 2004 ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE; 2005 if (ndlp->nlp_type & (NLP_FCP_TARGET | NLP_NVME_TARGET)) 2006 lpfc_nlp_set_state(vport, ndlp, NLP_STE_MAPPED_NODE); 2007 else 2008 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE); 2009 } else 2010 lpfc_printf_vlog(vport, 2011 KERN_INFO, LOG_ELS, 2012 "3067 PRLI's still outstanding " 2013 "on x%06x - count %d, Pend Node Mode " 2014 "transition...\n", 2015 ndlp->nlp_DID, ndlp->fc4_prli_sent); 2016 2017 return ndlp->nlp_state; 2018 } 2019 2020 /*! lpfc_device_rm_prli_issue 2021 * 2022 * \pre 2023 * \post 2024 * \param phba 2025 * \param ndlp 2026 * \param arg 2027 * \param evt 2028 * \return uint32_t 2029 * 2030 * \b Description: 2031 * This routine is envoked when we a request to remove a nport we are in the 2032 * process of PRLIing. We should software abort outstanding prli, unreg 2033 * login, send a logout. We will change node state to UNUSED_NODE, put it 2034 * on plogi list so it can be freed when LOGO completes. 2035 * 2036 */ 2037 2038 static uint32_t 2039 lpfc_device_rm_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 2040 void *arg, uint32_t evt) 2041 { 2042 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 2043 2044 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) { 2045 spin_lock_irq(shost->host_lock); 2046 ndlp->nlp_flag |= NLP_NODEV_REMOVE; 2047 spin_unlock_irq(shost->host_lock); 2048 return ndlp->nlp_state; 2049 } else { 2050 /* software abort outstanding PLOGI */ 2051 lpfc_els_abort(vport->phba, ndlp); 2052 2053 lpfc_drop_node(vport, ndlp); 2054 return NLP_STE_FREED_NODE; 2055 } 2056 } 2057 2058 2059 /*! lpfc_device_recov_prli_issue 2060 * 2061 * \pre 2062 * \post 2063 * \param phba 2064 * \param ndlp 2065 * \param arg 2066 * \param evt 2067 * \return uint32_t 2068 * 2069 * \b Description: 2070 * The routine is envoked when the state of a device is unknown, like 2071 * during a link down. We should remove the nodelist entry from the 2072 * unmapped list, issue a UNREG_LOGIN, do a software abort of the 2073 * outstanding PRLI command, then free the node entry. 2074 */ 2075 static uint32_t 2076 lpfc_device_recov_prli_issue(struct lpfc_vport *vport, 2077 struct lpfc_nodelist *ndlp, 2078 void *arg, 2079 uint32_t evt) 2080 { 2081 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 2082 struct lpfc_hba *phba = vport->phba; 2083 2084 /* Don't do anything that will mess up processing of the 2085 * previous RSCN. 2086 */ 2087 if (vport->fc_flag & FC_RSCN_DEFERRED) 2088 return ndlp->nlp_state; 2089 2090 /* software abort outstanding PRLI */ 2091 lpfc_els_abort(phba, ndlp); 2092 2093 ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE; 2094 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE); 2095 spin_lock_irq(shost->host_lock); 2096 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC); 2097 spin_unlock_irq(shost->host_lock); 2098 lpfc_disc_set_adisc(vport, ndlp); 2099 return ndlp->nlp_state; 2100 } 2101 2102 static uint32_t 2103 lpfc_rcv_plogi_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 2104 void *arg, uint32_t evt) 2105 { 2106 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *)arg; 2107 struct ls_rjt stat; 2108 2109 memset(&stat, 0, sizeof(struct ls_rjt)); 2110 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC; 2111 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE; 2112 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL); 2113 return ndlp->nlp_state; 2114 } 2115 2116 static uint32_t 2117 lpfc_rcv_prli_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 2118 void *arg, uint32_t evt) 2119 { 2120 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *)arg; 2121 struct ls_rjt stat; 2122 2123 memset(&stat, 0, sizeof(struct ls_rjt)); 2124 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC; 2125 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE; 2126 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL); 2127 return ndlp->nlp_state; 2128 } 2129 2130 static uint32_t 2131 lpfc_rcv_logo_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 2132 void *arg, uint32_t evt) 2133 { 2134 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 2135 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *)arg; 2136 2137 spin_lock_irq(shost->host_lock); 2138 ndlp->nlp_flag |= NLP_LOGO_ACC; 2139 spin_unlock_irq(shost->host_lock); 2140 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL); 2141 return ndlp->nlp_state; 2142 } 2143 2144 static uint32_t 2145 lpfc_rcv_padisc_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 2146 void *arg, uint32_t evt) 2147 { 2148 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *)arg; 2149 struct ls_rjt stat; 2150 2151 memset(&stat, 0, sizeof(struct ls_rjt)); 2152 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC; 2153 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE; 2154 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL); 2155 return ndlp->nlp_state; 2156 } 2157 2158 static uint32_t 2159 lpfc_rcv_prlo_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 2160 void *arg, uint32_t evt) 2161 { 2162 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *)arg; 2163 struct ls_rjt stat; 2164 2165 memset(&stat, 0, sizeof(struct ls_rjt)); 2166 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC; 2167 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE; 2168 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL); 2169 return ndlp->nlp_state; 2170 } 2171 2172 static uint32_t 2173 lpfc_cmpl_logo_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 2174 void *arg, uint32_t evt) 2175 { 2176 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 2177 2178 ndlp->nlp_prev_state = NLP_STE_LOGO_ISSUE; 2179 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE); 2180 spin_lock_irq(shost->host_lock); 2181 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC); 2182 spin_unlock_irq(shost->host_lock); 2183 lpfc_disc_set_adisc(vport, ndlp); 2184 return ndlp->nlp_state; 2185 } 2186 2187 static uint32_t 2188 lpfc_device_rm_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 2189 void *arg, uint32_t evt) 2190 { 2191 /* 2192 * Take no action. If a LOGO is outstanding, then possibly DevLoss has 2193 * timed out and is calling for Device Remove. In this case, the LOGO 2194 * must be allowed to complete in state LOGO_ISSUE so that the rpi 2195 * and other NLP flags are correctly cleaned up. 2196 */ 2197 return ndlp->nlp_state; 2198 } 2199 2200 static uint32_t 2201 lpfc_device_recov_logo_issue(struct lpfc_vport *vport, 2202 struct lpfc_nodelist *ndlp, 2203 void *arg, uint32_t evt) 2204 { 2205 /* 2206 * Device Recovery events have no meaning for a node with a LOGO 2207 * outstanding. The LOGO has to complete first and handle the 2208 * node from that point. 2209 */ 2210 return ndlp->nlp_state; 2211 } 2212 2213 static uint32_t 2214 lpfc_rcv_plogi_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 2215 void *arg, uint32_t evt) 2216 { 2217 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg; 2218 2219 lpfc_rcv_plogi(vport, ndlp, cmdiocb); 2220 return ndlp->nlp_state; 2221 } 2222 2223 static uint32_t 2224 lpfc_rcv_prli_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 2225 void *arg, uint32_t evt) 2226 { 2227 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg; 2228 2229 lpfc_rcv_prli(vport, ndlp, cmdiocb); 2230 lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp); 2231 return ndlp->nlp_state; 2232 } 2233 2234 static uint32_t 2235 lpfc_rcv_logo_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 2236 void *arg, uint32_t evt) 2237 { 2238 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg; 2239 2240 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO); 2241 return ndlp->nlp_state; 2242 } 2243 2244 static uint32_t 2245 lpfc_rcv_padisc_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 2246 void *arg, uint32_t evt) 2247 { 2248 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg; 2249 2250 lpfc_rcv_padisc(vport, ndlp, cmdiocb); 2251 return ndlp->nlp_state; 2252 } 2253 2254 static uint32_t 2255 lpfc_rcv_prlo_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 2256 void *arg, uint32_t evt) 2257 { 2258 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg; 2259 2260 lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL); 2261 return ndlp->nlp_state; 2262 } 2263 2264 static uint32_t 2265 lpfc_device_recov_unmap_node(struct lpfc_vport *vport, 2266 struct lpfc_nodelist *ndlp, 2267 void *arg, 2268 uint32_t evt) 2269 { 2270 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 2271 2272 ndlp->nlp_prev_state = NLP_STE_UNMAPPED_NODE; 2273 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE); 2274 spin_lock_irq(shost->host_lock); 2275 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC); 2276 spin_unlock_irq(shost->host_lock); 2277 lpfc_disc_set_adisc(vport, ndlp); 2278 2279 return ndlp->nlp_state; 2280 } 2281 2282 static uint32_t 2283 lpfc_rcv_plogi_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 2284 void *arg, uint32_t evt) 2285 { 2286 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg; 2287 2288 lpfc_rcv_plogi(vport, ndlp, cmdiocb); 2289 return ndlp->nlp_state; 2290 } 2291 2292 static uint32_t 2293 lpfc_rcv_prli_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 2294 void *arg, uint32_t evt) 2295 { 2296 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg; 2297 2298 lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp); 2299 return ndlp->nlp_state; 2300 } 2301 2302 static uint32_t 2303 lpfc_rcv_logo_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 2304 void *arg, uint32_t evt) 2305 { 2306 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg; 2307 2308 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO); 2309 return ndlp->nlp_state; 2310 } 2311 2312 static uint32_t 2313 lpfc_rcv_padisc_mapped_node(struct lpfc_vport *vport, 2314 struct lpfc_nodelist *ndlp, 2315 void *arg, uint32_t evt) 2316 { 2317 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg; 2318 2319 lpfc_rcv_padisc(vport, ndlp, cmdiocb); 2320 return ndlp->nlp_state; 2321 } 2322 2323 static uint32_t 2324 lpfc_rcv_prlo_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 2325 void *arg, uint32_t evt) 2326 { 2327 struct lpfc_hba *phba = vport->phba; 2328 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg; 2329 2330 /* flush the target */ 2331 lpfc_sli_abort_iocb(vport, &phba->sli.sli3_ring[LPFC_FCP_RING], 2332 ndlp->nlp_sid, 0, LPFC_CTX_TGT); 2333 2334 /* Treat like rcv logo */ 2335 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_PRLO); 2336 return ndlp->nlp_state; 2337 } 2338 2339 static uint32_t 2340 lpfc_device_recov_mapped_node(struct lpfc_vport *vport, 2341 struct lpfc_nodelist *ndlp, 2342 void *arg, 2343 uint32_t evt) 2344 { 2345 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 2346 2347 ndlp->nlp_prev_state = NLP_STE_MAPPED_NODE; 2348 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE); 2349 spin_lock_irq(shost->host_lock); 2350 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC); 2351 spin_unlock_irq(shost->host_lock); 2352 lpfc_disc_set_adisc(vport, ndlp); 2353 return ndlp->nlp_state; 2354 } 2355 2356 static uint32_t 2357 lpfc_rcv_plogi_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 2358 void *arg, uint32_t evt) 2359 { 2360 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 2361 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg; 2362 2363 /* Ignore PLOGI if we have an outstanding LOGO */ 2364 if (ndlp->nlp_flag & (NLP_LOGO_SND | NLP_LOGO_ACC)) 2365 return ndlp->nlp_state; 2366 if (lpfc_rcv_plogi(vport, ndlp, cmdiocb)) { 2367 lpfc_cancel_retry_delay_tmo(vport, ndlp); 2368 spin_lock_irq(shost->host_lock); 2369 ndlp->nlp_flag &= ~(NLP_NPR_ADISC | NLP_NPR_2B_DISC); 2370 spin_unlock_irq(shost->host_lock); 2371 } else if (!(ndlp->nlp_flag & NLP_NPR_2B_DISC)) { 2372 /* send PLOGI immediately, move to PLOGI issue state */ 2373 if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) { 2374 ndlp->nlp_prev_state = NLP_STE_NPR_NODE; 2375 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE); 2376 lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0); 2377 } 2378 } 2379 return ndlp->nlp_state; 2380 } 2381 2382 static uint32_t 2383 lpfc_rcv_prli_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 2384 void *arg, uint32_t evt) 2385 { 2386 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 2387 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg; 2388 struct ls_rjt stat; 2389 2390 memset(&stat, 0, sizeof (struct ls_rjt)); 2391 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC; 2392 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE; 2393 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL); 2394 2395 if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) { 2396 if (ndlp->nlp_flag & NLP_NPR_ADISC) { 2397 spin_lock_irq(shost->host_lock); 2398 ndlp->nlp_flag &= ~NLP_NPR_ADISC; 2399 ndlp->nlp_prev_state = NLP_STE_NPR_NODE; 2400 spin_unlock_irq(shost->host_lock); 2401 lpfc_nlp_set_state(vport, ndlp, NLP_STE_ADISC_ISSUE); 2402 lpfc_issue_els_adisc(vport, ndlp, 0); 2403 } else { 2404 ndlp->nlp_prev_state = NLP_STE_NPR_NODE; 2405 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE); 2406 lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0); 2407 } 2408 } 2409 return ndlp->nlp_state; 2410 } 2411 2412 static uint32_t 2413 lpfc_rcv_logo_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 2414 void *arg, uint32_t evt) 2415 { 2416 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg; 2417 2418 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO); 2419 return ndlp->nlp_state; 2420 } 2421 2422 static uint32_t 2423 lpfc_rcv_padisc_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 2424 void *arg, uint32_t evt) 2425 { 2426 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg; 2427 2428 lpfc_rcv_padisc(vport, ndlp, cmdiocb); 2429 /* 2430 * Do not start discovery if discovery is about to start 2431 * or discovery in progress for this node. Starting discovery 2432 * here will affect the counting of discovery threads. 2433 */ 2434 if (!(ndlp->nlp_flag & NLP_DELAY_TMO) && 2435 !(ndlp->nlp_flag & NLP_NPR_2B_DISC)) { 2436 if (ndlp->nlp_flag & NLP_NPR_ADISC) { 2437 ndlp->nlp_flag &= ~NLP_NPR_ADISC; 2438 ndlp->nlp_prev_state = NLP_STE_NPR_NODE; 2439 lpfc_nlp_set_state(vport, ndlp, NLP_STE_ADISC_ISSUE); 2440 lpfc_issue_els_adisc(vport, ndlp, 0); 2441 } else { 2442 ndlp->nlp_prev_state = NLP_STE_NPR_NODE; 2443 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE); 2444 lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0); 2445 } 2446 } 2447 return ndlp->nlp_state; 2448 } 2449 2450 static uint32_t 2451 lpfc_rcv_prlo_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 2452 void *arg, uint32_t evt) 2453 { 2454 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 2455 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg; 2456 2457 spin_lock_irq(shost->host_lock); 2458 ndlp->nlp_flag |= NLP_LOGO_ACC; 2459 spin_unlock_irq(shost->host_lock); 2460 2461 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL); 2462 2463 if ((ndlp->nlp_flag & NLP_DELAY_TMO) == 0) { 2464 mod_timer(&ndlp->nlp_delayfunc, 2465 jiffies + msecs_to_jiffies(1000 * 1)); 2466 spin_lock_irq(shost->host_lock); 2467 ndlp->nlp_flag |= NLP_DELAY_TMO; 2468 ndlp->nlp_flag &= ~NLP_NPR_ADISC; 2469 spin_unlock_irq(shost->host_lock); 2470 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI; 2471 } else { 2472 spin_lock_irq(shost->host_lock); 2473 ndlp->nlp_flag &= ~NLP_NPR_ADISC; 2474 spin_unlock_irq(shost->host_lock); 2475 } 2476 return ndlp->nlp_state; 2477 } 2478 2479 static uint32_t 2480 lpfc_cmpl_plogi_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 2481 void *arg, uint32_t evt) 2482 { 2483 struct lpfc_iocbq *cmdiocb, *rspiocb; 2484 IOCB_t *irsp; 2485 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 2486 2487 cmdiocb = (struct lpfc_iocbq *) arg; 2488 rspiocb = cmdiocb->context_un.rsp_iocb; 2489 2490 irsp = &rspiocb->iocb; 2491 if (irsp->ulpStatus) { 2492 spin_lock_irq(shost->host_lock); 2493 ndlp->nlp_flag |= NLP_DEFER_RM; 2494 spin_unlock_irq(shost->host_lock); 2495 return NLP_STE_FREED_NODE; 2496 } 2497 return ndlp->nlp_state; 2498 } 2499 2500 static uint32_t 2501 lpfc_cmpl_prli_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 2502 void *arg, uint32_t evt) 2503 { 2504 struct lpfc_iocbq *cmdiocb, *rspiocb; 2505 IOCB_t *irsp; 2506 2507 cmdiocb = (struct lpfc_iocbq *) arg; 2508 rspiocb = cmdiocb->context_un.rsp_iocb; 2509 2510 irsp = &rspiocb->iocb; 2511 if (irsp->ulpStatus && (ndlp->nlp_flag & NLP_NODEV_REMOVE)) { 2512 lpfc_drop_node(vport, ndlp); 2513 return NLP_STE_FREED_NODE; 2514 } 2515 return ndlp->nlp_state; 2516 } 2517 2518 static uint32_t 2519 lpfc_cmpl_logo_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 2520 void *arg, uint32_t evt) 2521 { 2522 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 2523 2524 /* For the fabric port just clear the fc flags. */ 2525 if (ndlp->nlp_DID == Fabric_DID) { 2526 spin_lock_irq(shost->host_lock); 2527 vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP); 2528 spin_unlock_irq(shost->host_lock); 2529 } 2530 lpfc_unreg_rpi(vport, ndlp); 2531 return ndlp->nlp_state; 2532 } 2533 2534 static uint32_t 2535 lpfc_cmpl_adisc_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 2536 void *arg, uint32_t evt) 2537 { 2538 struct lpfc_iocbq *cmdiocb, *rspiocb; 2539 IOCB_t *irsp; 2540 2541 cmdiocb = (struct lpfc_iocbq *) arg; 2542 rspiocb = cmdiocb->context_un.rsp_iocb; 2543 2544 irsp = &rspiocb->iocb; 2545 if (irsp->ulpStatus && (ndlp->nlp_flag & NLP_NODEV_REMOVE)) { 2546 lpfc_drop_node(vport, ndlp); 2547 return NLP_STE_FREED_NODE; 2548 } 2549 return ndlp->nlp_state; 2550 } 2551 2552 static uint32_t 2553 lpfc_cmpl_reglogin_npr_node(struct lpfc_vport *vport, 2554 struct lpfc_nodelist *ndlp, 2555 void *arg, uint32_t evt) 2556 { 2557 LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg; 2558 MAILBOX_t *mb = &pmb->u.mb; 2559 2560 if (!mb->mbxStatus) { 2561 /* SLI4 ports have preallocated logical rpis. */ 2562 if (vport->phba->sli_rev < LPFC_SLI_REV4) 2563 ndlp->nlp_rpi = mb->un.varWords[0]; 2564 ndlp->nlp_flag |= NLP_RPI_REGISTERED; 2565 if (ndlp->nlp_flag & NLP_LOGO_ACC) { 2566 lpfc_unreg_rpi(vport, ndlp); 2567 } 2568 } else { 2569 if (ndlp->nlp_flag & NLP_NODEV_REMOVE) { 2570 lpfc_drop_node(vport, ndlp); 2571 return NLP_STE_FREED_NODE; 2572 } 2573 } 2574 return ndlp->nlp_state; 2575 } 2576 2577 static uint32_t 2578 lpfc_device_rm_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 2579 void *arg, uint32_t evt) 2580 { 2581 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 2582 2583 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) { 2584 spin_lock_irq(shost->host_lock); 2585 ndlp->nlp_flag |= NLP_NODEV_REMOVE; 2586 spin_unlock_irq(shost->host_lock); 2587 return ndlp->nlp_state; 2588 } 2589 lpfc_drop_node(vport, ndlp); 2590 return NLP_STE_FREED_NODE; 2591 } 2592 2593 static uint32_t 2594 lpfc_device_recov_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 2595 void *arg, uint32_t evt) 2596 { 2597 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 2598 2599 /* Don't do anything that will mess up processing of the 2600 * previous RSCN. 2601 */ 2602 if (vport->fc_flag & FC_RSCN_DEFERRED) 2603 return ndlp->nlp_state; 2604 2605 lpfc_cancel_retry_delay_tmo(vport, ndlp); 2606 spin_lock_irq(shost->host_lock); 2607 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC); 2608 spin_unlock_irq(shost->host_lock); 2609 return ndlp->nlp_state; 2610 } 2611 2612 2613 /* This next section defines the NPort Discovery State Machine */ 2614 2615 /* There are 4 different double linked lists nodelist entries can reside on. 2616 * The plogi list and adisc list are used when Link Up discovery or RSCN 2617 * processing is needed. Each list holds the nodes that we will send PLOGI 2618 * or ADISC on. These lists will keep track of what nodes will be effected 2619 * by an RSCN, or a Link Up (Typically, all nodes are effected on Link Up). 2620 * The unmapped_list will contain all nodes that we have successfully logged 2621 * into at the Fibre Channel level. The mapped_list will contain all nodes 2622 * that are mapped FCP targets. 2623 */ 2624 /* 2625 * The bind list is a list of undiscovered (potentially non-existent) nodes 2626 * that we have saved binding information on. This information is used when 2627 * nodes transition from the unmapped to the mapped list. 2628 */ 2629 /* For UNUSED_NODE state, the node has just been allocated . 2630 * For PLOGI_ISSUE and REG_LOGIN_ISSUE, the node is on 2631 * the PLOGI list. For REG_LOGIN_COMPL, the node is taken off the PLOGI list 2632 * and put on the unmapped list. For ADISC processing, the node is taken off 2633 * the ADISC list and placed on either the mapped or unmapped list (depending 2634 * on its previous state). Once on the unmapped list, a PRLI is issued and the 2635 * state changed to PRLI_ISSUE. When the PRLI completion occurs, the state is 2636 * changed to UNMAPPED_NODE. If the completion indicates a mapped 2637 * node, the node is taken off the unmapped list. The binding list is checked 2638 * for a valid binding, or a binding is automatically assigned. If binding 2639 * assignment is unsuccessful, the node is left on the unmapped list. If 2640 * binding assignment is successful, the associated binding list entry (if 2641 * any) is removed, and the node is placed on the mapped list. 2642 */ 2643 /* 2644 * For a Link Down, all nodes on the ADISC, PLOGI, unmapped or mapped 2645 * lists will receive a DEVICE_RECOVERY event. If the linkdown or devloss timers 2646 * expire, all effected nodes will receive a DEVICE_RM event. 2647 */ 2648 /* 2649 * For a Link Up or RSCN, all nodes will move from the mapped / unmapped lists 2650 * to either the ADISC or PLOGI list. After a Nameserver query or ALPA loopmap 2651 * check, additional nodes may be added or removed (via DEVICE_RM) to / from 2652 * the PLOGI or ADISC lists. Once the PLOGI and ADISC lists are populated, 2653 * we will first process the ADISC list. 32 entries are processed initially and 2654 * ADISC is initited for each one. Completions / Events for each node are 2655 * funnelled thru the state machine. As each node finishes ADISC processing, it 2656 * starts ADISC for any nodes waiting for ADISC processing. If no nodes are 2657 * waiting, and the ADISC list count is identically 0, then we are done. For 2658 * Link Up discovery, since all nodes on the PLOGI list are UNREG_LOGIN'ed, we 2659 * can issue a CLEAR_LA and reenable Link Events. Next we will process the PLOGI 2660 * list. 32 entries are processed initially and PLOGI is initited for each one. 2661 * Completions / Events for each node are funnelled thru the state machine. As 2662 * each node finishes PLOGI processing, it starts PLOGI for any nodes waiting 2663 * for PLOGI processing. If no nodes are waiting, and the PLOGI list count is 2664 * indentically 0, then we are done. We have now completed discovery / RSCN 2665 * handling. Upon completion, ALL nodes should be on either the mapped or 2666 * unmapped lists. 2667 */ 2668 2669 static uint32_t (*lpfc_disc_action[NLP_STE_MAX_STATE * NLP_EVT_MAX_EVENT]) 2670 (struct lpfc_vport *, struct lpfc_nodelist *, void *, uint32_t) = { 2671 /* Action routine Event Current State */ 2672 lpfc_rcv_plogi_unused_node, /* RCV_PLOGI UNUSED_NODE */ 2673 lpfc_rcv_els_unused_node, /* RCV_PRLI */ 2674 lpfc_rcv_logo_unused_node, /* RCV_LOGO */ 2675 lpfc_rcv_els_unused_node, /* RCV_ADISC */ 2676 lpfc_rcv_els_unused_node, /* RCV_PDISC */ 2677 lpfc_rcv_els_unused_node, /* RCV_PRLO */ 2678 lpfc_disc_illegal, /* CMPL_PLOGI */ 2679 lpfc_disc_illegal, /* CMPL_PRLI */ 2680 lpfc_cmpl_logo_unused_node, /* CMPL_LOGO */ 2681 lpfc_disc_illegal, /* CMPL_ADISC */ 2682 lpfc_disc_illegal, /* CMPL_REG_LOGIN */ 2683 lpfc_device_rm_unused_node, /* DEVICE_RM */ 2684 lpfc_device_recov_unused_node, /* DEVICE_RECOVERY */ 2685 2686 lpfc_rcv_plogi_plogi_issue, /* RCV_PLOGI PLOGI_ISSUE */ 2687 lpfc_rcv_prli_plogi_issue, /* RCV_PRLI */ 2688 lpfc_rcv_logo_plogi_issue, /* RCV_LOGO */ 2689 lpfc_rcv_els_plogi_issue, /* RCV_ADISC */ 2690 lpfc_rcv_els_plogi_issue, /* RCV_PDISC */ 2691 lpfc_rcv_els_plogi_issue, /* RCV_PRLO */ 2692 lpfc_cmpl_plogi_plogi_issue, /* CMPL_PLOGI */ 2693 lpfc_disc_illegal, /* CMPL_PRLI */ 2694 lpfc_cmpl_logo_plogi_issue, /* CMPL_LOGO */ 2695 lpfc_disc_illegal, /* CMPL_ADISC */ 2696 lpfc_cmpl_reglogin_plogi_issue,/* CMPL_REG_LOGIN */ 2697 lpfc_device_rm_plogi_issue, /* DEVICE_RM */ 2698 lpfc_device_recov_plogi_issue, /* DEVICE_RECOVERY */ 2699 2700 lpfc_rcv_plogi_adisc_issue, /* RCV_PLOGI ADISC_ISSUE */ 2701 lpfc_rcv_prli_adisc_issue, /* RCV_PRLI */ 2702 lpfc_rcv_logo_adisc_issue, /* RCV_LOGO */ 2703 lpfc_rcv_padisc_adisc_issue, /* RCV_ADISC */ 2704 lpfc_rcv_padisc_adisc_issue, /* RCV_PDISC */ 2705 lpfc_rcv_prlo_adisc_issue, /* RCV_PRLO */ 2706 lpfc_disc_illegal, /* CMPL_PLOGI */ 2707 lpfc_disc_illegal, /* CMPL_PRLI */ 2708 lpfc_disc_illegal, /* CMPL_LOGO */ 2709 lpfc_cmpl_adisc_adisc_issue, /* CMPL_ADISC */ 2710 lpfc_disc_illegal, /* CMPL_REG_LOGIN */ 2711 lpfc_device_rm_adisc_issue, /* DEVICE_RM */ 2712 lpfc_device_recov_adisc_issue, /* DEVICE_RECOVERY */ 2713 2714 lpfc_rcv_plogi_reglogin_issue, /* RCV_PLOGI REG_LOGIN_ISSUE */ 2715 lpfc_rcv_prli_reglogin_issue, /* RCV_PLOGI */ 2716 lpfc_rcv_logo_reglogin_issue, /* RCV_LOGO */ 2717 lpfc_rcv_padisc_reglogin_issue, /* RCV_ADISC */ 2718 lpfc_rcv_padisc_reglogin_issue, /* RCV_PDISC */ 2719 lpfc_rcv_prlo_reglogin_issue, /* RCV_PRLO */ 2720 lpfc_cmpl_plogi_illegal, /* CMPL_PLOGI */ 2721 lpfc_disc_illegal, /* CMPL_PRLI */ 2722 lpfc_disc_illegal, /* CMPL_LOGO */ 2723 lpfc_disc_illegal, /* CMPL_ADISC */ 2724 lpfc_cmpl_reglogin_reglogin_issue,/* CMPL_REG_LOGIN */ 2725 lpfc_device_rm_reglogin_issue, /* DEVICE_RM */ 2726 lpfc_device_recov_reglogin_issue,/* DEVICE_RECOVERY */ 2727 2728 lpfc_rcv_plogi_prli_issue, /* RCV_PLOGI PRLI_ISSUE */ 2729 lpfc_rcv_prli_prli_issue, /* RCV_PRLI */ 2730 lpfc_rcv_logo_prli_issue, /* RCV_LOGO */ 2731 lpfc_rcv_padisc_prli_issue, /* RCV_ADISC */ 2732 lpfc_rcv_padisc_prli_issue, /* RCV_PDISC */ 2733 lpfc_rcv_prlo_prli_issue, /* RCV_PRLO */ 2734 lpfc_cmpl_plogi_illegal, /* CMPL_PLOGI */ 2735 lpfc_cmpl_prli_prli_issue, /* CMPL_PRLI */ 2736 lpfc_disc_illegal, /* CMPL_LOGO */ 2737 lpfc_disc_illegal, /* CMPL_ADISC */ 2738 lpfc_disc_illegal, /* CMPL_REG_LOGIN */ 2739 lpfc_device_rm_prli_issue, /* DEVICE_RM */ 2740 lpfc_device_recov_prli_issue, /* DEVICE_RECOVERY */ 2741 2742 lpfc_rcv_plogi_logo_issue, /* RCV_PLOGI LOGO_ISSUE */ 2743 lpfc_rcv_prli_logo_issue, /* RCV_PRLI */ 2744 lpfc_rcv_logo_logo_issue, /* RCV_LOGO */ 2745 lpfc_rcv_padisc_logo_issue, /* RCV_ADISC */ 2746 lpfc_rcv_padisc_logo_issue, /* RCV_PDISC */ 2747 lpfc_rcv_prlo_logo_issue, /* RCV_PRLO */ 2748 lpfc_cmpl_plogi_illegal, /* CMPL_PLOGI */ 2749 lpfc_disc_illegal, /* CMPL_PRLI */ 2750 lpfc_cmpl_logo_logo_issue, /* CMPL_LOGO */ 2751 lpfc_disc_illegal, /* CMPL_ADISC */ 2752 lpfc_disc_illegal, /* CMPL_REG_LOGIN */ 2753 lpfc_device_rm_logo_issue, /* DEVICE_RM */ 2754 lpfc_device_recov_logo_issue, /* DEVICE_RECOVERY */ 2755 2756 lpfc_rcv_plogi_unmap_node, /* RCV_PLOGI UNMAPPED_NODE */ 2757 lpfc_rcv_prli_unmap_node, /* RCV_PRLI */ 2758 lpfc_rcv_logo_unmap_node, /* RCV_LOGO */ 2759 lpfc_rcv_padisc_unmap_node, /* RCV_ADISC */ 2760 lpfc_rcv_padisc_unmap_node, /* RCV_PDISC */ 2761 lpfc_rcv_prlo_unmap_node, /* RCV_PRLO */ 2762 lpfc_disc_illegal, /* CMPL_PLOGI */ 2763 lpfc_disc_illegal, /* CMPL_PRLI */ 2764 lpfc_disc_illegal, /* CMPL_LOGO */ 2765 lpfc_disc_illegal, /* CMPL_ADISC */ 2766 lpfc_disc_illegal, /* CMPL_REG_LOGIN */ 2767 lpfc_disc_illegal, /* DEVICE_RM */ 2768 lpfc_device_recov_unmap_node, /* DEVICE_RECOVERY */ 2769 2770 lpfc_rcv_plogi_mapped_node, /* RCV_PLOGI MAPPED_NODE */ 2771 lpfc_rcv_prli_mapped_node, /* RCV_PRLI */ 2772 lpfc_rcv_logo_mapped_node, /* RCV_LOGO */ 2773 lpfc_rcv_padisc_mapped_node, /* RCV_ADISC */ 2774 lpfc_rcv_padisc_mapped_node, /* RCV_PDISC */ 2775 lpfc_rcv_prlo_mapped_node, /* RCV_PRLO */ 2776 lpfc_disc_illegal, /* CMPL_PLOGI */ 2777 lpfc_disc_illegal, /* CMPL_PRLI */ 2778 lpfc_disc_illegal, /* CMPL_LOGO */ 2779 lpfc_disc_illegal, /* CMPL_ADISC */ 2780 lpfc_disc_illegal, /* CMPL_REG_LOGIN */ 2781 lpfc_disc_illegal, /* DEVICE_RM */ 2782 lpfc_device_recov_mapped_node, /* DEVICE_RECOVERY */ 2783 2784 lpfc_rcv_plogi_npr_node, /* RCV_PLOGI NPR_NODE */ 2785 lpfc_rcv_prli_npr_node, /* RCV_PRLI */ 2786 lpfc_rcv_logo_npr_node, /* RCV_LOGO */ 2787 lpfc_rcv_padisc_npr_node, /* RCV_ADISC */ 2788 lpfc_rcv_padisc_npr_node, /* RCV_PDISC */ 2789 lpfc_rcv_prlo_npr_node, /* RCV_PRLO */ 2790 lpfc_cmpl_plogi_npr_node, /* CMPL_PLOGI */ 2791 lpfc_cmpl_prli_npr_node, /* CMPL_PRLI */ 2792 lpfc_cmpl_logo_npr_node, /* CMPL_LOGO */ 2793 lpfc_cmpl_adisc_npr_node, /* CMPL_ADISC */ 2794 lpfc_cmpl_reglogin_npr_node, /* CMPL_REG_LOGIN */ 2795 lpfc_device_rm_npr_node, /* DEVICE_RM */ 2796 lpfc_device_recov_npr_node, /* DEVICE_RECOVERY */ 2797 }; 2798 2799 int 2800 lpfc_disc_state_machine(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 2801 void *arg, uint32_t evt) 2802 { 2803 uint32_t cur_state, rc; 2804 uint32_t(*func) (struct lpfc_vport *, struct lpfc_nodelist *, void *, 2805 uint32_t); 2806 uint32_t got_ndlp = 0; 2807 2808 if (lpfc_nlp_get(ndlp)) 2809 got_ndlp = 1; 2810 2811 cur_state = ndlp->nlp_state; 2812 2813 /* DSM in event <evt> on NPort <nlp_DID> in state <cur_state> */ 2814 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, 2815 "0211 DSM in event x%x on NPort x%x in " 2816 "state %d Data: x%x\n", 2817 evt, ndlp->nlp_DID, cur_state, ndlp->nlp_flag); 2818 2819 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_DSM, 2820 "DSM in: evt:%d ste:%d did:x%x", 2821 evt, cur_state, ndlp->nlp_DID); 2822 2823 func = lpfc_disc_action[(cur_state * NLP_EVT_MAX_EVENT) + evt]; 2824 rc = (func) (vport, ndlp, arg, evt); 2825 2826 /* DSM out state <rc> on NPort <nlp_DID> */ 2827 if (got_ndlp) { 2828 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, 2829 "0212 DSM out state %d on NPort x%x Data: x%x\n", 2830 rc, ndlp->nlp_DID, ndlp->nlp_flag); 2831 2832 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_DSM, 2833 "DSM out: ste:%d did:x%x flg:x%x", 2834 rc, ndlp->nlp_DID, ndlp->nlp_flag); 2835 /* Decrement the ndlp reference count held for this function */ 2836 lpfc_nlp_put(ndlp); 2837 } else { 2838 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, 2839 "0213 DSM out state %d on NPort free\n", rc); 2840 2841 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_DSM, 2842 "DSM out: ste:%d did:x%x flg:x%x", 2843 rc, 0, 0); 2844 } 2845 2846 return rc; 2847 } 2848