1 /******************************************************************* 2 * This file is part of the Emulex Linux Device Driver for * 3 * Fibre Channel Host Bus Adapters. * 4 * Copyright (C) 2017-2018 Broadcom. All Rights Reserved. The term * 5 * “Broadcom” refers to Broadcom Inc. 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 (unlikely(!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 ndlp->nlp_type &= ~(NLP_FCP_TARGET | NLP_FCP_INITIATOR); 394 ndlp->nlp_type &= ~(NLP_NVME_TARGET | NLP_NVME_INITIATOR); 395 ndlp->nlp_fcp_info &= ~NLP_FCP_2_DEVICE; 396 ndlp->nlp_flag &= ~NLP_FIRSTBURST; 397 398 /* Check for Nport to NPort pt2pt protocol */ 399 if ((vport->fc_flag & FC_PT2PT) && 400 !(vport->fc_flag & FC_PT2PT_PLOGI)) { 401 /* rcv'ed PLOGI decides what our NPortId will be */ 402 vport->fc_myDID = icmd->un.rcvels.parmRo; 403 404 ed_tov = be32_to_cpu(sp->cmn.e_d_tov); 405 if (sp->cmn.edtovResolution) { 406 /* E_D_TOV ticks are in nanoseconds */ 407 ed_tov = (phba->fc_edtov + 999999) / 1000000; 408 } 409 410 /* 411 * For pt-to-pt, use the larger EDTOV 412 * RATOV = 2 * EDTOV 413 */ 414 if (ed_tov > phba->fc_edtov) 415 phba->fc_edtov = ed_tov; 416 phba->fc_ratov = (2 * phba->fc_edtov) / 1000; 417 418 memcpy(&phba->fc_fabparam, sp, sizeof(struct serv_parm)); 419 420 /* Issue config_link / reg_vfi to account for updated TOV's */ 421 422 if (phba->sli_rev == LPFC_SLI_REV4) 423 lpfc_issue_reg_vfi(vport); 424 else { 425 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 426 if (mbox == NULL) 427 goto out; 428 lpfc_config_link(phba, mbox); 429 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl; 430 mbox->vport = vport; 431 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT); 432 if (rc == MBX_NOT_FINISHED) { 433 mempool_free(mbox, phba->mbox_mem_pool); 434 goto out; 435 } 436 } 437 438 lpfc_can_disctmo(vport); 439 } 440 441 ndlp->nlp_flag &= ~NLP_SUPPRESS_RSP; 442 if ((phba->sli.sli_flag & LPFC_SLI_SUPPRESS_RSP) && 443 sp->cmn.valid_vendor_ver_level) { 444 vid = be32_to_cpu(sp->un.vv.vid); 445 flag = be32_to_cpu(sp->un.vv.flags); 446 if ((vid == LPFC_VV_EMLX_ID) && (flag & LPFC_VV_SUPPRESS_RSP)) 447 ndlp->nlp_flag |= NLP_SUPPRESS_RSP; 448 } 449 450 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 451 if (!mbox) 452 goto out; 453 454 /* Registering an existing RPI behaves differently for SLI3 vs SLI4 */ 455 if (phba->sli_rev == LPFC_SLI_REV4) 456 lpfc_unreg_rpi(vport, ndlp); 457 458 rc = lpfc_reg_rpi(phba, vport->vpi, icmd->un.rcvels.remoteID, 459 (uint8_t *) sp, mbox, ndlp->nlp_rpi); 460 if (rc) { 461 mempool_free(mbox, phba->mbox_mem_pool); 462 goto out; 463 } 464 465 /* ACC PLOGI rsp command needs to execute first, 466 * queue this mbox command to be processed later. 467 */ 468 mbox->mbox_cmpl = lpfc_mbx_cmpl_reg_login; 469 /* 470 * mbox->context2 = lpfc_nlp_get(ndlp) deferred until mailbox 471 * command issued in lpfc_cmpl_els_acc(). 472 */ 473 mbox->vport = vport; 474 spin_lock_irq(shost->host_lock); 475 ndlp->nlp_flag |= (NLP_ACC_REGLOGIN | NLP_RCV_PLOGI); 476 spin_unlock_irq(shost->host_lock); 477 478 /* 479 * If there is an outstanding PLOGI issued, abort it before 480 * sending ACC rsp for received PLOGI. If pending plogi 481 * is not canceled here, the plogi will be rejected by 482 * remote port and will be retried. On a configuration with 483 * single discovery thread, this will cause a huge delay in 484 * discovery. Also this will cause multiple state machines 485 * running in parallel for this node. 486 */ 487 if (ndlp->nlp_state == NLP_STE_PLOGI_ISSUE) { 488 /* software abort outstanding PLOGI */ 489 lpfc_els_abort(phba, ndlp); 490 } 491 492 if ((vport->port_type == LPFC_NPIV_PORT && 493 vport->cfg_restrict_login)) { 494 495 /* In order to preserve RPIs, we want to cleanup 496 * the default RPI the firmware created to rcv 497 * this ELS request. The only way to do this is 498 * to register, then unregister the RPI. 499 */ 500 spin_lock_irq(shost->host_lock); 501 ndlp->nlp_flag |= NLP_RM_DFLT_RPI; 502 spin_unlock_irq(shost->host_lock); 503 stat.un.b.lsRjtRsnCode = LSRJT_INVALID_CMD; 504 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE; 505 rc = lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, 506 ndlp, mbox); 507 if (rc) 508 mempool_free(mbox, phba->mbox_mem_pool); 509 return 1; 510 } 511 rc = lpfc_els_rsp_acc(vport, ELS_CMD_PLOGI, cmdiocb, ndlp, mbox); 512 if (rc) 513 mempool_free(mbox, phba->mbox_mem_pool); 514 return 1; 515 out: 516 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC; 517 stat.un.b.lsRjtRsnCodeExp = LSEXP_OUT_OF_RESOURCE; 518 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL); 519 return 0; 520 } 521 522 /** 523 * lpfc_mbx_cmpl_resume_rpi - Resume RPI completion routine 524 * @phba: pointer to lpfc hba data structure. 525 * @mboxq: pointer to mailbox object 526 * 527 * This routine is invoked to issue a completion to a rcv'ed 528 * ADISC or PDISC after the paused RPI has been resumed. 529 **/ 530 static void 531 lpfc_mbx_cmpl_resume_rpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq) 532 { 533 struct lpfc_vport *vport; 534 struct lpfc_iocbq *elsiocb; 535 struct lpfc_nodelist *ndlp; 536 uint32_t cmd; 537 538 elsiocb = (struct lpfc_iocbq *)mboxq->context1; 539 ndlp = (struct lpfc_nodelist *) mboxq->context2; 540 vport = mboxq->vport; 541 cmd = elsiocb->drvrTimeout; 542 543 if (cmd == ELS_CMD_ADISC) { 544 lpfc_els_rsp_adisc_acc(vport, elsiocb, ndlp); 545 } else { 546 lpfc_els_rsp_acc(vport, ELS_CMD_PLOGI, elsiocb, 547 ndlp, NULL); 548 } 549 kfree(elsiocb); 550 mempool_free(mboxq, phba->mbox_mem_pool); 551 } 552 553 static int 554 lpfc_rcv_padisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 555 struct lpfc_iocbq *cmdiocb) 556 { 557 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 558 struct lpfc_iocbq *elsiocb; 559 struct lpfc_dmabuf *pcmd; 560 struct serv_parm *sp; 561 struct lpfc_name *pnn, *ppn; 562 struct ls_rjt stat; 563 ADISC *ap; 564 IOCB_t *icmd; 565 uint32_t *lp; 566 uint32_t cmd; 567 568 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2; 569 lp = (uint32_t *) pcmd->virt; 570 571 cmd = *lp++; 572 if (cmd == ELS_CMD_ADISC) { 573 ap = (ADISC *) lp; 574 pnn = (struct lpfc_name *) & ap->nodeName; 575 ppn = (struct lpfc_name *) & ap->portName; 576 } else { 577 sp = (struct serv_parm *) lp; 578 pnn = (struct lpfc_name *) & sp->nodeName; 579 ppn = (struct lpfc_name *) & sp->portName; 580 } 581 582 icmd = &cmdiocb->iocb; 583 if (icmd->ulpStatus == 0 && lpfc_check_adisc(vport, ndlp, pnn, ppn)) { 584 585 /* 586 * As soon as we send ACC, the remote NPort can 587 * start sending us data. Thus, for SLI4 we must 588 * resume the RPI before the ACC goes out. 589 */ 590 if (vport->phba->sli_rev == LPFC_SLI_REV4) { 591 elsiocb = kmalloc(sizeof(struct lpfc_iocbq), 592 GFP_KERNEL); 593 if (elsiocb) { 594 595 /* Save info from cmd IOCB used in rsp */ 596 memcpy((uint8_t *)elsiocb, (uint8_t *)cmdiocb, 597 sizeof(struct lpfc_iocbq)); 598 599 /* Save the ELS cmd */ 600 elsiocb->drvrTimeout = cmd; 601 602 lpfc_sli4_resume_rpi(ndlp, 603 lpfc_mbx_cmpl_resume_rpi, elsiocb); 604 goto out; 605 } 606 } 607 608 if (cmd == ELS_CMD_ADISC) { 609 lpfc_els_rsp_adisc_acc(vport, cmdiocb, ndlp); 610 } else { 611 lpfc_els_rsp_acc(vport, ELS_CMD_PLOGI, cmdiocb, 612 ndlp, NULL); 613 } 614 out: 615 /* If we are authenticated, move to the proper state */ 616 if (ndlp->nlp_type & NLP_FCP_TARGET) 617 lpfc_nlp_set_state(vport, ndlp, NLP_STE_MAPPED_NODE); 618 else 619 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE); 620 621 return 1; 622 } 623 /* Reject this request because invalid parameters */ 624 stat.un.b.lsRjtRsvd0 = 0; 625 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC; 626 stat.un.b.lsRjtRsnCodeExp = LSEXP_SPARM_OPTIONS; 627 stat.un.b.vendorUnique = 0; 628 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL); 629 630 /* 1 sec timeout */ 631 mod_timer(&ndlp->nlp_delayfunc, jiffies + msecs_to_jiffies(1000)); 632 633 spin_lock_irq(shost->host_lock); 634 ndlp->nlp_flag |= NLP_DELAY_TMO; 635 spin_unlock_irq(shost->host_lock); 636 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI; 637 ndlp->nlp_prev_state = ndlp->nlp_state; 638 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE); 639 return 0; 640 } 641 642 static int 643 lpfc_rcv_logo(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 644 struct lpfc_iocbq *cmdiocb, uint32_t els_cmd) 645 { 646 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 647 struct lpfc_hba *phba = vport->phba; 648 struct lpfc_vport **vports; 649 int i, active_vlink_present = 0 ; 650 651 /* Put ndlp in NPR state with 1 sec timeout for plogi, ACC logo */ 652 /* Only call LOGO ACC for first LOGO, this avoids sending unnecessary 653 * PLOGIs during LOGO storms from a device. 654 */ 655 spin_lock_irq(shost->host_lock); 656 ndlp->nlp_flag |= NLP_LOGO_ACC; 657 spin_unlock_irq(shost->host_lock); 658 if (els_cmd == ELS_CMD_PRLO) 659 lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL); 660 else 661 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL); 662 if (ndlp->nlp_DID == Fabric_DID) { 663 if (vport->port_state <= LPFC_FDISC) 664 goto out; 665 lpfc_linkdown_port(vport); 666 spin_lock_irq(shost->host_lock); 667 vport->fc_flag |= FC_VPORT_LOGO_RCVD; 668 spin_unlock_irq(shost->host_lock); 669 vports = lpfc_create_vport_work_array(phba); 670 if (vports) { 671 for (i = 0; i <= phba->max_vports && vports[i] != NULL; 672 i++) { 673 if ((!(vports[i]->fc_flag & 674 FC_VPORT_LOGO_RCVD)) && 675 (vports[i]->port_state > LPFC_FDISC)) { 676 active_vlink_present = 1; 677 break; 678 } 679 } 680 lpfc_destroy_vport_work_array(phba, vports); 681 } 682 683 /* 684 * Don't re-instantiate if vport is marked for deletion. 685 * If we are here first then vport_delete is going to wait 686 * for discovery to complete. 687 */ 688 if (!(vport->load_flag & FC_UNLOADING) && 689 active_vlink_present) { 690 /* 691 * If there are other active VLinks present, 692 * re-instantiate the Vlink using FDISC. 693 */ 694 mod_timer(&ndlp->nlp_delayfunc, 695 jiffies + msecs_to_jiffies(1000)); 696 spin_lock_irq(shost->host_lock); 697 ndlp->nlp_flag |= NLP_DELAY_TMO; 698 spin_unlock_irq(shost->host_lock); 699 ndlp->nlp_last_elscmd = ELS_CMD_FDISC; 700 vport->port_state = LPFC_FDISC; 701 } else { 702 spin_lock_irq(shost->host_lock); 703 phba->pport->fc_flag &= ~FC_LOGO_RCVD_DID_CHNG; 704 spin_unlock_irq(shost->host_lock); 705 lpfc_retry_pport_discovery(phba); 706 } 707 } else if ((!(ndlp->nlp_type & NLP_FABRIC) && 708 ((ndlp->nlp_type & NLP_FCP_TARGET) || 709 !(ndlp->nlp_type & NLP_FCP_INITIATOR))) || 710 (ndlp->nlp_state == NLP_STE_ADISC_ISSUE)) { 711 /* Only try to re-login if this is NOT a Fabric Node */ 712 mod_timer(&ndlp->nlp_delayfunc, 713 jiffies + msecs_to_jiffies(1000 * 1)); 714 spin_lock_irq(shost->host_lock); 715 ndlp->nlp_flag |= NLP_DELAY_TMO; 716 spin_unlock_irq(shost->host_lock); 717 718 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI; 719 } 720 out: 721 ndlp->nlp_prev_state = ndlp->nlp_state; 722 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE); 723 724 spin_lock_irq(shost->host_lock); 725 ndlp->nlp_flag &= ~NLP_NPR_ADISC; 726 spin_unlock_irq(shost->host_lock); 727 /* The driver has to wait until the ACC completes before it continues 728 * processing the LOGO. The action will resume in 729 * lpfc_cmpl_els_logo_acc routine. Since part of processing includes an 730 * unreg_login, the driver waits so the ACC does not get aborted. 731 */ 732 return 0; 733 } 734 735 static uint32_t 736 lpfc_rcv_prli_support_check(struct lpfc_vport *vport, 737 struct lpfc_nodelist *ndlp, 738 struct lpfc_iocbq *cmdiocb) 739 { 740 struct ls_rjt stat; 741 uint32_t *payload; 742 uint32_t cmd; 743 744 payload = ((struct lpfc_dmabuf *)cmdiocb->context2)->virt; 745 cmd = *payload; 746 if (vport->phba->nvmet_support) { 747 /* Must be a NVME PRLI */ 748 if (cmd == ELS_CMD_PRLI) 749 goto out; 750 } else { 751 /* Initiator mode. */ 752 if (!vport->nvmei_support && (cmd == ELS_CMD_NVMEPRLI)) 753 goto out; 754 } 755 return 1; 756 out: 757 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NVME_DISC, 758 "6115 Rcv PRLI (%x) check failed: ndlp rpi %d " 759 "state x%x flags x%x\n", 760 cmd, ndlp->nlp_rpi, ndlp->nlp_state, 761 ndlp->nlp_flag); 762 memset(&stat, 0, sizeof(struct ls_rjt)); 763 stat.un.b.lsRjtRsnCode = LSRJT_CMD_UNSUPPORTED; 764 stat.un.b.lsRjtRsnCodeExp = LSEXP_REQ_UNSUPPORTED; 765 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, 766 ndlp, NULL); 767 return 0; 768 } 769 770 static void 771 lpfc_rcv_prli(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 772 struct lpfc_iocbq *cmdiocb) 773 { 774 struct lpfc_hba *phba = vport->phba; 775 struct lpfc_dmabuf *pcmd; 776 uint32_t *lp; 777 PRLI *npr; 778 struct fc_rport *rport = ndlp->rport; 779 u32 roles; 780 781 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2; 782 lp = (uint32_t *) pcmd->virt; 783 npr = (PRLI *) ((uint8_t *) lp + sizeof (uint32_t)); 784 785 if ((npr->prliType == PRLI_FCP_TYPE) || 786 (npr->prliType == PRLI_NVME_TYPE)) { 787 if (npr->initiatorFunc) { 788 if (npr->prliType == PRLI_FCP_TYPE) 789 ndlp->nlp_type |= NLP_FCP_INITIATOR; 790 if (npr->prliType == PRLI_NVME_TYPE) 791 ndlp->nlp_type |= NLP_NVME_INITIATOR; 792 } 793 if (npr->targetFunc) { 794 if (npr->prliType == PRLI_FCP_TYPE) 795 ndlp->nlp_type |= NLP_FCP_TARGET; 796 if (npr->prliType == PRLI_NVME_TYPE) 797 ndlp->nlp_type |= NLP_NVME_TARGET; 798 if (npr->writeXferRdyDis) 799 ndlp->nlp_flag |= NLP_FIRSTBURST; 800 } 801 if (npr->Retry) 802 ndlp->nlp_fcp_info |= NLP_FCP_2_DEVICE; 803 804 /* If this driver is in nvme target mode, set the ndlp's fc4 805 * type to NVME provided the PRLI response claims NVME FC4 806 * type. Target mode does not issue gft_id so doesn't get 807 * the fc4 type set until now. 808 */ 809 if (phba->nvmet_support && (npr->prliType == PRLI_NVME_TYPE)) { 810 ndlp->nlp_fc4_type |= NLP_FC4_NVME; 811 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE); 812 } 813 if (npr->prliType == PRLI_FCP_TYPE) 814 ndlp->nlp_fc4_type |= NLP_FC4_FCP; 815 } 816 if (rport) { 817 /* We need to update the rport role values */ 818 roles = FC_RPORT_ROLE_UNKNOWN; 819 if (ndlp->nlp_type & NLP_FCP_INITIATOR) 820 roles |= FC_RPORT_ROLE_FCP_INITIATOR; 821 if (ndlp->nlp_type & NLP_FCP_TARGET) 822 roles |= FC_RPORT_ROLE_FCP_TARGET; 823 824 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT, 825 "rport rolechg: role:x%x did:x%x flg:x%x", 826 roles, ndlp->nlp_DID, ndlp->nlp_flag); 827 828 if (phba->cfg_enable_fc4_type != LPFC_ENABLE_NVME) 829 fc_remote_port_rolechg(rport, roles); 830 } 831 } 832 833 static uint32_t 834 lpfc_disc_set_adisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) 835 { 836 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 837 838 if (!(ndlp->nlp_flag & NLP_RPI_REGISTERED)) { 839 ndlp->nlp_flag &= ~NLP_NPR_ADISC; 840 return 0; 841 } 842 843 if (!(vport->fc_flag & FC_PT2PT)) { 844 /* Check config parameter use-adisc or FCP-2 */ 845 if ((vport->cfg_use_adisc && (vport->fc_flag & FC_RSCN_MODE)) || 846 ((ndlp->nlp_fcp_info & NLP_FCP_2_DEVICE) && 847 (ndlp->nlp_type & NLP_FCP_TARGET))) { 848 spin_lock_irq(shost->host_lock); 849 ndlp->nlp_flag |= NLP_NPR_ADISC; 850 spin_unlock_irq(shost->host_lock); 851 return 1; 852 } 853 } 854 ndlp->nlp_flag &= ~NLP_NPR_ADISC; 855 lpfc_unreg_rpi(vport, ndlp); 856 return 0; 857 } 858 859 /** 860 * lpfc_release_rpi - Release a RPI by issuing unreg_login mailbox cmd. 861 * @phba : Pointer to lpfc_hba structure. 862 * @vport: Pointer to lpfc_vport structure. 863 * @rpi : rpi to be release. 864 * 865 * This function will send a unreg_login mailbox command to the firmware 866 * to release a rpi. 867 **/ 868 void 869 lpfc_release_rpi(struct lpfc_hba *phba, 870 struct lpfc_vport *vport, 871 uint16_t rpi) 872 { 873 LPFC_MBOXQ_t *pmb; 874 int rc; 875 876 pmb = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool, 877 GFP_KERNEL); 878 if (!pmb) 879 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX, 880 "2796 mailbox memory allocation failed \n"); 881 else { 882 lpfc_unreg_login(phba, vport->vpi, rpi, pmb); 883 pmb->mbox_cmpl = lpfc_sli_def_mbox_cmpl; 884 rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT); 885 if (rc == MBX_NOT_FINISHED) 886 mempool_free(pmb, phba->mbox_mem_pool); 887 } 888 } 889 890 static uint32_t 891 lpfc_disc_illegal(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 892 void *arg, uint32_t evt) 893 { 894 struct lpfc_hba *phba; 895 LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg; 896 uint16_t rpi; 897 898 phba = vport->phba; 899 /* Release the RPI if reglogin completing */ 900 if (!(phba->pport->load_flag & FC_UNLOADING) && 901 (evt == NLP_EVT_CMPL_REG_LOGIN) && 902 (!pmb->u.mb.mbxStatus)) { 903 rpi = pmb->u.mb.un.varWords[0]; 904 lpfc_release_rpi(phba, vport, rpi); 905 } 906 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY, 907 "0271 Illegal State Transition: node x%x " 908 "event x%x, state x%x Data: x%x x%x\n", 909 ndlp->nlp_DID, evt, ndlp->nlp_state, ndlp->nlp_rpi, 910 ndlp->nlp_flag); 911 return ndlp->nlp_state; 912 } 913 914 static uint32_t 915 lpfc_cmpl_plogi_illegal(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 916 void *arg, uint32_t evt) 917 { 918 /* This transition is only legal if we previously 919 * rcv'ed a PLOGI. Since we don't want 2 discovery threads 920 * working on the same NPortID, do nothing for this thread 921 * to stop it. 922 */ 923 if (!(ndlp->nlp_flag & NLP_RCV_PLOGI)) { 924 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY, 925 "0272 Illegal State Transition: node x%x " 926 "event x%x, state x%x Data: x%x x%x\n", 927 ndlp->nlp_DID, evt, ndlp->nlp_state, ndlp->nlp_rpi, 928 ndlp->nlp_flag); 929 } 930 return ndlp->nlp_state; 931 } 932 933 /* Start of Discovery State Machine routines */ 934 935 static uint32_t 936 lpfc_rcv_plogi_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 937 void *arg, uint32_t evt) 938 { 939 struct lpfc_iocbq *cmdiocb; 940 941 cmdiocb = (struct lpfc_iocbq *) arg; 942 943 if (lpfc_rcv_plogi(vport, ndlp, cmdiocb)) { 944 return ndlp->nlp_state; 945 } 946 return NLP_STE_FREED_NODE; 947 } 948 949 static uint32_t 950 lpfc_rcv_els_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 951 void *arg, uint32_t evt) 952 { 953 lpfc_issue_els_logo(vport, ndlp, 0); 954 return ndlp->nlp_state; 955 } 956 957 static uint32_t 958 lpfc_rcv_logo_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 959 void *arg, uint32_t evt) 960 { 961 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 962 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg; 963 964 spin_lock_irq(shost->host_lock); 965 ndlp->nlp_flag |= NLP_LOGO_ACC; 966 spin_unlock_irq(shost->host_lock); 967 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL); 968 969 return ndlp->nlp_state; 970 } 971 972 static uint32_t 973 lpfc_cmpl_logo_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 974 void *arg, uint32_t evt) 975 { 976 return NLP_STE_FREED_NODE; 977 } 978 979 static uint32_t 980 lpfc_device_rm_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 981 void *arg, uint32_t evt) 982 { 983 return NLP_STE_FREED_NODE; 984 } 985 986 static uint32_t 987 lpfc_device_recov_unused_node(struct lpfc_vport *vport, 988 struct lpfc_nodelist *ndlp, 989 void *arg, uint32_t evt) 990 { 991 return ndlp->nlp_state; 992 } 993 994 static uint32_t 995 lpfc_rcv_plogi_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 996 void *arg, uint32_t evt) 997 { 998 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 999 struct lpfc_hba *phba = vport->phba; 1000 struct lpfc_iocbq *cmdiocb = arg; 1001 struct lpfc_dmabuf *pcmd = (struct lpfc_dmabuf *) cmdiocb->context2; 1002 uint32_t *lp = (uint32_t *) pcmd->virt; 1003 struct serv_parm *sp = (struct serv_parm *) (lp + 1); 1004 struct ls_rjt stat; 1005 int port_cmp; 1006 1007 memset(&stat, 0, sizeof (struct ls_rjt)); 1008 1009 /* For a PLOGI, we only accept if our portname is less 1010 * than the remote portname. 1011 */ 1012 phba->fc_stat.elsLogiCol++; 1013 port_cmp = memcmp(&vport->fc_portname, &sp->portName, 1014 sizeof(struct lpfc_name)); 1015 1016 if (port_cmp >= 0) { 1017 /* Reject this request because the remote node will accept 1018 ours */ 1019 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC; 1020 stat.un.b.lsRjtRsnCodeExp = LSEXP_CMD_IN_PROGRESS; 1021 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, 1022 NULL); 1023 } else { 1024 if (lpfc_rcv_plogi(vport, ndlp, cmdiocb) && 1025 (ndlp->nlp_flag & NLP_NPR_2B_DISC) && 1026 (vport->num_disc_nodes)) { 1027 spin_lock_irq(shost->host_lock); 1028 ndlp->nlp_flag &= ~NLP_NPR_2B_DISC; 1029 spin_unlock_irq(shost->host_lock); 1030 /* Check if there are more PLOGIs to be sent */ 1031 lpfc_more_plogi(vport); 1032 if (vport->num_disc_nodes == 0) { 1033 spin_lock_irq(shost->host_lock); 1034 vport->fc_flag &= ~FC_NDISC_ACTIVE; 1035 spin_unlock_irq(shost->host_lock); 1036 lpfc_can_disctmo(vport); 1037 lpfc_end_rscn(vport); 1038 } 1039 } 1040 } /* If our portname was less */ 1041 1042 return ndlp->nlp_state; 1043 } 1044 1045 static uint32_t 1046 lpfc_rcv_prli_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 1047 void *arg, uint32_t evt) 1048 { 1049 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg; 1050 struct ls_rjt stat; 1051 1052 memset(&stat, 0, sizeof (struct ls_rjt)); 1053 stat.un.b.lsRjtRsnCode = LSRJT_LOGICAL_BSY; 1054 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE; 1055 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL); 1056 return ndlp->nlp_state; 1057 } 1058 1059 static uint32_t 1060 lpfc_rcv_logo_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 1061 void *arg, uint32_t evt) 1062 { 1063 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg; 1064 1065 /* Retrieve RPI from LOGO IOCB. RPI is used for CMD_ABORT_XRI_CN */ 1066 if (vport->phba->sli_rev == LPFC_SLI_REV3) 1067 ndlp->nlp_rpi = cmdiocb->iocb.ulpIoTag; 1068 /* software abort outstanding PLOGI */ 1069 lpfc_els_abort(vport->phba, ndlp); 1070 1071 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO); 1072 return ndlp->nlp_state; 1073 } 1074 1075 static uint32_t 1076 lpfc_rcv_els_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 1077 void *arg, uint32_t evt) 1078 { 1079 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 1080 struct lpfc_hba *phba = vport->phba; 1081 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg; 1082 1083 /* software abort outstanding PLOGI */ 1084 lpfc_els_abort(phba, ndlp); 1085 1086 if (evt == NLP_EVT_RCV_LOGO) { 1087 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL); 1088 } else { 1089 lpfc_issue_els_logo(vport, ndlp, 0); 1090 } 1091 1092 /* Put ndlp in npr state set plogi timer for 1 sec */ 1093 mod_timer(&ndlp->nlp_delayfunc, jiffies + msecs_to_jiffies(1000 * 1)); 1094 spin_lock_irq(shost->host_lock); 1095 ndlp->nlp_flag |= NLP_DELAY_TMO; 1096 spin_unlock_irq(shost->host_lock); 1097 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI; 1098 ndlp->nlp_prev_state = NLP_STE_PLOGI_ISSUE; 1099 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE); 1100 1101 return ndlp->nlp_state; 1102 } 1103 1104 static uint32_t 1105 lpfc_cmpl_plogi_plogi_issue(struct lpfc_vport *vport, 1106 struct lpfc_nodelist *ndlp, 1107 void *arg, 1108 uint32_t evt) 1109 { 1110 struct lpfc_hba *phba = vport->phba; 1111 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 1112 struct lpfc_iocbq *cmdiocb, *rspiocb; 1113 struct lpfc_dmabuf *pcmd, *prsp, *mp; 1114 uint32_t *lp; 1115 uint32_t vid, flag; 1116 IOCB_t *irsp; 1117 struct serv_parm *sp; 1118 uint32_t ed_tov; 1119 LPFC_MBOXQ_t *mbox; 1120 int rc; 1121 1122 cmdiocb = (struct lpfc_iocbq *) arg; 1123 rspiocb = cmdiocb->context_un.rsp_iocb; 1124 1125 if (ndlp->nlp_flag & NLP_ACC_REGLOGIN) { 1126 /* Recovery from PLOGI collision logic */ 1127 return ndlp->nlp_state; 1128 } 1129 1130 irsp = &rspiocb->iocb; 1131 1132 if (irsp->ulpStatus) 1133 goto out; 1134 1135 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2; 1136 1137 prsp = list_get_first(&pcmd->list, struct lpfc_dmabuf, list); 1138 if (!prsp) 1139 goto out; 1140 1141 lp = (uint32_t *) prsp->virt; 1142 sp = (struct serv_parm *) ((uint8_t *) lp + sizeof (uint32_t)); 1143 1144 /* Some switches have FDMI servers returning 0 for WWN */ 1145 if ((ndlp->nlp_DID != FDMI_DID) && 1146 (wwn_to_u64(sp->portName.u.wwn) == 0 || 1147 wwn_to_u64(sp->nodeName.u.wwn) == 0)) { 1148 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS, 1149 "0142 PLOGI RSP: Invalid WWN.\n"); 1150 goto out; 1151 } 1152 if (!lpfc_check_sparm(vport, ndlp, sp, CLASS3, 0)) 1153 goto out; 1154 /* PLOGI chkparm OK */ 1155 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, 1156 "0121 PLOGI chkparm OK Data: x%x x%x x%x x%x\n", 1157 ndlp->nlp_DID, ndlp->nlp_state, 1158 ndlp->nlp_flag, ndlp->nlp_rpi); 1159 if (vport->cfg_fcp_class == 2 && (sp->cls2.classValid)) 1160 ndlp->nlp_fcp_info |= CLASS2; 1161 else 1162 ndlp->nlp_fcp_info |= CLASS3; 1163 1164 ndlp->nlp_class_sup = 0; 1165 if (sp->cls1.classValid) 1166 ndlp->nlp_class_sup |= FC_COS_CLASS1; 1167 if (sp->cls2.classValid) 1168 ndlp->nlp_class_sup |= FC_COS_CLASS2; 1169 if (sp->cls3.classValid) 1170 ndlp->nlp_class_sup |= FC_COS_CLASS3; 1171 if (sp->cls4.classValid) 1172 ndlp->nlp_class_sup |= FC_COS_CLASS4; 1173 ndlp->nlp_maxframe = 1174 ((sp->cmn.bbRcvSizeMsb & 0x0F) << 8) | sp->cmn.bbRcvSizeLsb; 1175 1176 if ((vport->fc_flag & FC_PT2PT) && 1177 (vport->fc_flag & FC_PT2PT_PLOGI)) { 1178 ed_tov = be32_to_cpu(sp->cmn.e_d_tov); 1179 if (sp->cmn.edtovResolution) { 1180 /* E_D_TOV ticks are in nanoseconds */ 1181 ed_tov = (phba->fc_edtov + 999999) / 1000000; 1182 } 1183 1184 ndlp->nlp_flag &= ~NLP_SUPPRESS_RSP; 1185 if ((phba->sli.sli_flag & LPFC_SLI_SUPPRESS_RSP) && 1186 sp->cmn.valid_vendor_ver_level) { 1187 vid = be32_to_cpu(sp->un.vv.vid); 1188 flag = be32_to_cpu(sp->un.vv.flags); 1189 if ((vid == LPFC_VV_EMLX_ID) && 1190 (flag & LPFC_VV_SUPPRESS_RSP)) 1191 ndlp->nlp_flag |= NLP_SUPPRESS_RSP; 1192 } 1193 1194 /* 1195 * Use the larger EDTOV 1196 * RATOV = 2 * EDTOV for pt-to-pt 1197 */ 1198 if (ed_tov > phba->fc_edtov) 1199 phba->fc_edtov = ed_tov; 1200 phba->fc_ratov = (2 * phba->fc_edtov) / 1000; 1201 1202 memcpy(&phba->fc_fabparam, sp, sizeof(struct serv_parm)); 1203 1204 /* Issue config_link / reg_vfi to account for updated TOV's */ 1205 if (phba->sli_rev == LPFC_SLI_REV4) { 1206 lpfc_issue_reg_vfi(vport); 1207 } else { 1208 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 1209 if (!mbox) { 1210 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS, 1211 "0133 PLOGI: no memory " 1212 "for config_link " 1213 "Data: x%x x%x x%x x%x\n", 1214 ndlp->nlp_DID, ndlp->nlp_state, 1215 ndlp->nlp_flag, ndlp->nlp_rpi); 1216 goto out; 1217 } 1218 1219 lpfc_config_link(phba, mbox); 1220 1221 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl; 1222 mbox->vport = vport; 1223 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT); 1224 if (rc == MBX_NOT_FINISHED) { 1225 mempool_free(mbox, phba->mbox_mem_pool); 1226 goto out; 1227 } 1228 } 1229 } 1230 1231 lpfc_unreg_rpi(vport, ndlp); 1232 1233 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 1234 if (!mbox) { 1235 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS, 1236 "0018 PLOGI: no memory for reg_login " 1237 "Data: x%x x%x x%x x%x\n", 1238 ndlp->nlp_DID, ndlp->nlp_state, 1239 ndlp->nlp_flag, ndlp->nlp_rpi); 1240 goto out; 1241 } 1242 1243 if (lpfc_reg_rpi(phba, vport->vpi, irsp->un.elsreq64.remoteID, 1244 (uint8_t *) sp, mbox, ndlp->nlp_rpi) == 0) { 1245 switch (ndlp->nlp_DID) { 1246 case NameServer_DID: 1247 mbox->mbox_cmpl = lpfc_mbx_cmpl_ns_reg_login; 1248 break; 1249 case FDMI_DID: 1250 mbox->mbox_cmpl = lpfc_mbx_cmpl_fdmi_reg_login; 1251 break; 1252 default: 1253 ndlp->nlp_flag |= NLP_REG_LOGIN_SEND; 1254 mbox->mbox_cmpl = lpfc_mbx_cmpl_reg_login; 1255 } 1256 mbox->context2 = lpfc_nlp_get(ndlp); 1257 mbox->vport = vport; 1258 if (lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT) 1259 != MBX_NOT_FINISHED) { 1260 lpfc_nlp_set_state(vport, ndlp, 1261 NLP_STE_REG_LOGIN_ISSUE); 1262 return ndlp->nlp_state; 1263 } 1264 if (ndlp->nlp_flag & NLP_REG_LOGIN_SEND) 1265 ndlp->nlp_flag &= ~NLP_REG_LOGIN_SEND; 1266 /* decrement node reference count to the failed mbox 1267 * command 1268 */ 1269 lpfc_nlp_put(ndlp); 1270 mp = (struct lpfc_dmabuf *) mbox->context1; 1271 lpfc_mbuf_free(phba, mp->virt, mp->phys); 1272 kfree(mp); 1273 mempool_free(mbox, phba->mbox_mem_pool); 1274 1275 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS, 1276 "0134 PLOGI: cannot issue reg_login " 1277 "Data: x%x x%x x%x x%x\n", 1278 ndlp->nlp_DID, ndlp->nlp_state, 1279 ndlp->nlp_flag, ndlp->nlp_rpi); 1280 } else { 1281 mempool_free(mbox, phba->mbox_mem_pool); 1282 1283 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS, 1284 "0135 PLOGI: cannot format reg_login " 1285 "Data: x%x x%x x%x x%x\n", 1286 ndlp->nlp_DID, ndlp->nlp_state, 1287 ndlp->nlp_flag, ndlp->nlp_rpi); 1288 } 1289 1290 1291 out: 1292 if (ndlp->nlp_DID == NameServer_DID) { 1293 lpfc_vport_set_state(vport, FC_VPORT_FAILED); 1294 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS, 1295 "0261 Cannot Register NameServer login\n"); 1296 } 1297 1298 /* 1299 ** In case the node reference counter does not go to zero, ensure that 1300 ** the stale state for the node is not processed. 1301 */ 1302 1303 ndlp->nlp_prev_state = ndlp->nlp_state; 1304 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE); 1305 spin_lock_irq(shost->host_lock); 1306 ndlp->nlp_flag |= NLP_DEFER_RM; 1307 spin_unlock_irq(shost->host_lock); 1308 return NLP_STE_FREED_NODE; 1309 } 1310 1311 static uint32_t 1312 lpfc_cmpl_logo_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 1313 void *arg, uint32_t evt) 1314 { 1315 return ndlp->nlp_state; 1316 } 1317 1318 static uint32_t 1319 lpfc_cmpl_reglogin_plogi_issue(struct lpfc_vport *vport, 1320 struct lpfc_nodelist *ndlp, void *arg, uint32_t evt) 1321 { 1322 struct lpfc_hba *phba; 1323 LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg; 1324 MAILBOX_t *mb = &pmb->u.mb; 1325 uint16_t rpi; 1326 1327 phba = vport->phba; 1328 /* Release the RPI */ 1329 if (!(phba->pport->load_flag & FC_UNLOADING) && 1330 !mb->mbxStatus) { 1331 rpi = pmb->u.mb.un.varWords[0]; 1332 lpfc_release_rpi(phba, vport, rpi); 1333 } 1334 return ndlp->nlp_state; 1335 } 1336 1337 static uint32_t 1338 lpfc_device_rm_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 1339 void *arg, uint32_t evt) 1340 { 1341 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 1342 1343 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) { 1344 spin_lock_irq(shost->host_lock); 1345 ndlp->nlp_flag |= NLP_NODEV_REMOVE; 1346 spin_unlock_irq(shost->host_lock); 1347 return ndlp->nlp_state; 1348 } else { 1349 /* software abort outstanding PLOGI */ 1350 lpfc_els_abort(vport->phba, ndlp); 1351 1352 lpfc_drop_node(vport, ndlp); 1353 return NLP_STE_FREED_NODE; 1354 } 1355 } 1356 1357 static uint32_t 1358 lpfc_device_recov_plogi_issue(struct lpfc_vport *vport, 1359 struct lpfc_nodelist *ndlp, 1360 void *arg, 1361 uint32_t evt) 1362 { 1363 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 1364 struct lpfc_hba *phba = vport->phba; 1365 1366 /* Don't do anything that will mess up processing of the 1367 * previous RSCN. 1368 */ 1369 if (vport->fc_flag & FC_RSCN_DEFERRED) 1370 return ndlp->nlp_state; 1371 1372 /* software abort outstanding PLOGI */ 1373 lpfc_els_abort(phba, ndlp); 1374 1375 ndlp->nlp_prev_state = NLP_STE_PLOGI_ISSUE; 1376 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE); 1377 spin_lock_irq(shost->host_lock); 1378 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC); 1379 spin_unlock_irq(shost->host_lock); 1380 1381 return ndlp->nlp_state; 1382 } 1383 1384 static uint32_t 1385 lpfc_rcv_plogi_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 1386 void *arg, uint32_t evt) 1387 { 1388 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 1389 struct lpfc_hba *phba = vport->phba; 1390 struct lpfc_iocbq *cmdiocb; 1391 1392 /* software abort outstanding ADISC */ 1393 lpfc_els_abort(phba, ndlp); 1394 1395 cmdiocb = (struct lpfc_iocbq *) arg; 1396 1397 if (lpfc_rcv_plogi(vport, ndlp, cmdiocb)) { 1398 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) { 1399 spin_lock_irq(shost->host_lock); 1400 ndlp->nlp_flag &= ~NLP_NPR_2B_DISC; 1401 spin_unlock_irq(shost->host_lock); 1402 if (vport->num_disc_nodes) 1403 lpfc_more_adisc(vport); 1404 } 1405 return ndlp->nlp_state; 1406 } 1407 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE; 1408 lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0); 1409 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE); 1410 1411 return ndlp->nlp_state; 1412 } 1413 1414 static uint32_t 1415 lpfc_rcv_prli_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 1416 void *arg, uint32_t evt) 1417 { 1418 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg; 1419 1420 if (lpfc_rcv_prli_support_check(vport, ndlp, cmdiocb)) 1421 lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp); 1422 return ndlp->nlp_state; 1423 } 1424 1425 static uint32_t 1426 lpfc_rcv_logo_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 1427 void *arg, uint32_t evt) 1428 { 1429 struct lpfc_hba *phba = vport->phba; 1430 struct lpfc_iocbq *cmdiocb; 1431 1432 cmdiocb = (struct lpfc_iocbq *) arg; 1433 1434 /* software abort outstanding ADISC */ 1435 lpfc_els_abort(phba, ndlp); 1436 1437 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO); 1438 return ndlp->nlp_state; 1439 } 1440 1441 static uint32_t 1442 lpfc_rcv_padisc_adisc_issue(struct lpfc_vport *vport, 1443 struct lpfc_nodelist *ndlp, 1444 void *arg, uint32_t evt) 1445 { 1446 struct lpfc_iocbq *cmdiocb; 1447 1448 cmdiocb = (struct lpfc_iocbq *) arg; 1449 1450 lpfc_rcv_padisc(vport, ndlp, cmdiocb); 1451 return ndlp->nlp_state; 1452 } 1453 1454 static uint32_t 1455 lpfc_rcv_prlo_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 1456 void *arg, uint32_t evt) 1457 { 1458 struct lpfc_iocbq *cmdiocb; 1459 1460 cmdiocb = (struct lpfc_iocbq *) arg; 1461 1462 /* Treat like rcv logo */ 1463 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_PRLO); 1464 return ndlp->nlp_state; 1465 } 1466 1467 static uint32_t 1468 lpfc_cmpl_adisc_adisc_issue(struct lpfc_vport *vport, 1469 struct lpfc_nodelist *ndlp, 1470 void *arg, uint32_t evt) 1471 { 1472 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 1473 struct lpfc_hba *phba = vport->phba; 1474 struct lpfc_iocbq *cmdiocb, *rspiocb; 1475 IOCB_t *irsp; 1476 ADISC *ap; 1477 int rc; 1478 1479 cmdiocb = (struct lpfc_iocbq *) arg; 1480 rspiocb = cmdiocb->context_un.rsp_iocb; 1481 1482 ap = (ADISC *)lpfc_check_elscmpl_iocb(phba, cmdiocb, rspiocb); 1483 irsp = &rspiocb->iocb; 1484 1485 if ((irsp->ulpStatus) || 1486 (!lpfc_check_adisc(vport, ndlp, &ap->nodeName, &ap->portName))) { 1487 /* 1 sec timeout */ 1488 mod_timer(&ndlp->nlp_delayfunc, 1489 jiffies + msecs_to_jiffies(1000)); 1490 spin_lock_irq(shost->host_lock); 1491 ndlp->nlp_flag |= NLP_DELAY_TMO; 1492 spin_unlock_irq(shost->host_lock); 1493 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI; 1494 1495 memset(&ndlp->nlp_nodename, 0, sizeof(struct lpfc_name)); 1496 memset(&ndlp->nlp_portname, 0, sizeof(struct lpfc_name)); 1497 1498 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE; 1499 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE); 1500 lpfc_unreg_rpi(vport, ndlp); 1501 return ndlp->nlp_state; 1502 } 1503 1504 if (phba->sli_rev == LPFC_SLI_REV4) { 1505 rc = lpfc_sli4_resume_rpi(ndlp, NULL, NULL); 1506 if (rc) { 1507 /* Stay in state and retry. */ 1508 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE; 1509 return ndlp->nlp_state; 1510 } 1511 } 1512 1513 if (ndlp->nlp_type & NLP_FCP_TARGET) { 1514 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE; 1515 lpfc_nlp_set_state(vport, ndlp, NLP_STE_MAPPED_NODE); 1516 } else { 1517 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE; 1518 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE); 1519 } 1520 1521 return ndlp->nlp_state; 1522 } 1523 1524 static uint32_t 1525 lpfc_device_rm_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 1526 void *arg, uint32_t evt) 1527 { 1528 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 1529 1530 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) { 1531 spin_lock_irq(shost->host_lock); 1532 ndlp->nlp_flag |= NLP_NODEV_REMOVE; 1533 spin_unlock_irq(shost->host_lock); 1534 return ndlp->nlp_state; 1535 } else { 1536 /* software abort outstanding ADISC */ 1537 lpfc_els_abort(vport->phba, ndlp); 1538 1539 lpfc_drop_node(vport, ndlp); 1540 return NLP_STE_FREED_NODE; 1541 } 1542 } 1543 1544 static uint32_t 1545 lpfc_device_recov_adisc_issue(struct lpfc_vport *vport, 1546 struct lpfc_nodelist *ndlp, 1547 void *arg, 1548 uint32_t evt) 1549 { 1550 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 1551 struct lpfc_hba *phba = vport->phba; 1552 1553 /* Don't do anything that will mess up processing of the 1554 * previous RSCN. 1555 */ 1556 if (vport->fc_flag & FC_RSCN_DEFERRED) 1557 return ndlp->nlp_state; 1558 1559 /* software abort outstanding ADISC */ 1560 lpfc_els_abort(phba, ndlp); 1561 1562 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE; 1563 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE); 1564 spin_lock_irq(shost->host_lock); 1565 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC); 1566 spin_unlock_irq(shost->host_lock); 1567 lpfc_disc_set_adisc(vport, ndlp); 1568 return ndlp->nlp_state; 1569 } 1570 1571 static uint32_t 1572 lpfc_rcv_plogi_reglogin_issue(struct lpfc_vport *vport, 1573 struct lpfc_nodelist *ndlp, 1574 void *arg, 1575 uint32_t evt) 1576 { 1577 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg; 1578 1579 lpfc_rcv_plogi(vport, ndlp, cmdiocb); 1580 return ndlp->nlp_state; 1581 } 1582 1583 static uint32_t 1584 lpfc_rcv_prli_reglogin_issue(struct lpfc_vport *vport, 1585 struct lpfc_nodelist *ndlp, 1586 void *arg, 1587 uint32_t evt) 1588 { 1589 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg; 1590 struct ls_rjt stat; 1591 1592 if (!lpfc_rcv_prli_support_check(vport, ndlp, cmdiocb)) { 1593 return ndlp->nlp_state; 1594 } 1595 if (vport->phba->nvmet_support) { 1596 /* NVME Target mode. Handle and respond to the PRLI and 1597 * transition to UNMAPPED provided the RPI has completed 1598 * registration. 1599 */ 1600 if (ndlp->nlp_flag & NLP_RPI_REGISTERED) { 1601 lpfc_rcv_prli(vport, ndlp, cmdiocb); 1602 lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp); 1603 } else { 1604 /* RPI registration has not completed. Reject the PRLI 1605 * to prevent an illegal state transition when the 1606 * rpi registration does complete. 1607 */ 1608 memset(&stat, 0, sizeof(struct ls_rjt)); 1609 stat.un.b.lsRjtRsnCode = LSRJT_LOGICAL_BSY; 1610 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE; 1611 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, 1612 ndlp, NULL); 1613 return ndlp->nlp_state; 1614 } 1615 } else { 1616 /* Initiator mode. */ 1617 lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp); 1618 } 1619 return ndlp->nlp_state; 1620 } 1621 1622 static uint32_t 1623 lpfc_rcv_logo_reglogin_issue(struct lpfc_vport *vport, 1624 struct lpfc_nodelist *ndlp, 1625 void *arg, 1626 uint32_t evt) 1627 { 1628 struct lpfc_hba *phba = vport->phba; 1629 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg; 1630 LPFC_MBOXQ_t *mb; 1631 LPFC_MBOXQ_t *nextmb; 1632 struct lpfc_dmabuf *mp; 1633 1634 cmdiocb = (struct lpfc_iocbq *) arg; 1635 1636 /* cleanup any ndlp on mbox q waiting for reglogin cmpl */ 1637 if ((mb = phba->sli.mbox_active)) { 1638 if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) && 1639 (ndlp == (struct lpfc_nodelist *) mb->context2)) { 1640 ndlp->nlp_flag &= ~NLP_REG_LOGIN_SEND; 1641 lpfc_nlp_put(ndlp); 1642 mb->context2 = NULL; 1643 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl; 1644 } 1645 } 1646 1647 spin_lock_irq(&phba->hbalock); 1648 list_for_each_entry_safe(mb, nextmb, &phba->sli.mboxq, list) { 1649 if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) && 1650 (ndlp == (struct lpfc_nodelist *) mb->context2)) { 1651 mp = (struct lpfc_dmabuf *) (mb->context1); 1652 if (mp) { 1653 __lpfc_mbuf_free(phba, mp->virt, mp->phys); 1654 kfree(mp); 1655 } 1656 ndlp->nlp_flag &= ~NLP_REG_LOGIN_SEND; 1657 lpfc_nlp_put(ndlp); 1658 list_del(&mb->list); 1659 phba->sli.mboxq_cnt--; 1660 mempool_free(mb, phba->mbox_mem_pool); 1661 } 1662 } 1663 spin_unlock_irq(&phba->hbalock); 1664 1665 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO); 1666 return ndlp->nlp_state; 1667 } 1668 1669 static uint32_t 1670 lpfc_rcv_padisc_reglogin_issue(struct lpfc_vport *vport, 1671 struct lpfc_nodelist *ndlp, 1672 void *arg, 1673 uint32_t evt) 1674 { 1675 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg; 1676 1677 lpfc_rcv_padisc(vport, ndlp, cmdiocb); 1678 return ndlp->nlp_state; 1679 } 1680 1681 static uint32_t 1682 lpfc_rcv_prlo_reglogin_issue(struct lpfc_vport *vport, 1683 struct lpfc_nodelist *ndlp, 1684 void *arg, 1685 uint32_t evt) 1686 { 1687 struct lpfc_iocbq *cmdiocb; 1688 1689 cmdiocb = (struct lpfc_iocbq *) arg; 1690 lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL); 1691 return ndlp->nlp_state; 1692 } 1693 1694 static uint32_t 1695 lpfc_cmpl_reglogin_reglogin_issue(struct lpfc_vport *vport, 1696 struct lpfc_nodelist *ndlp, 1697 void *arg, 1698 uint32_t evt) 1699 { 1700 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 1701 struct lpfc_hba *phba = vport->phba; 1702 LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg; 1703 MAILBOX_t *mb = &pmb->u.mb; 1704 uint32_t did = mb->un.varWords[1]; 1705 int rc = 0; 1706 1707 if (mb->mbxStatus) { 1708 /* RegLogin failed */ 1709 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY, 1710 "0246 RegLogin failed Data: x%x x%x x%x x%x " 1711 "x%x\n", 1712 did, mb->mbxStatus, vport->port_state, 1713 mb->un.varRegLogin.vpi, 1714 mb->un.varRegLogin.rpi); 1715 /* 1716 * If RegLogin failed due to lack of HBA resources do not 1717 * retry discovery. 1718 */ 1719 if (mb->mbxStatus == MBXERR_RPI_FULL) { 1720 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE; 1721 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE); 1722 return ndlp->nlp_state; 1723 } 1724 1725 /* Put ndlp in npr state set plogi timer for 1 sec */ 1726 mod_timer(&ndlp->nlp_delayfunc, 1727 jiffies + msecs_to_jiffies(1000 * 1)); 1728 spin_lock_irq(shost->host_lock); 1729 ndlp->nlp_flag |= NLP_DELAY_TMO; 1730 spin_unlock_irq(shost->host_lock); 1731 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI; 1732 1733 lpfc_issue_els_logo(vport, ndlp, 0); 1734 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE; 1735 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE); 1736 return ndlp->nlp_state; 1737 } 1738 1739 /* SLI4 ports have preallocated logical rpis. */ 1740 if (phba->sli_rev < LPFC_SLI_REV4) 1741 ndlp->nlp_rpi = mb->un.varWords[0]; 1742 1743 ndlp->nlp_flag |= NLP_RPI_REGISTERED; 1744 1745 /* Only if we are not a fabric nport do we issue PRLI */ 1746 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, 1747 "3066 RegLogin Complete on x%x x%x x%x\n", 1748 did, ndlp->nlp_type, ndlp->nlp_fc4_type); 1749 if (!(ndlp->nlp_type & NLP_FABRIC) && 1750 (phba->nvmet_support == 0)) { 1751 /* The driver supports FCP and NVME concurrently. If the 1752 * ndlp's nlp_fc4_type is still zero, the driver doesn't 1753 * know what PRLI to send yet. Figure that out now and 1754 * call PRLI depending on the outcome. 1755 */ 1756 if (vport->fc_flag & FC_PT2PT) { 1757 /* If we are pt2pt, there is no Fabric to determine 1758 * the FC4 type of the remote nport. So if NVME 1759 * is configured try it. 1760 */ 1761 ndlp->nlp_fc4_type |= NLP_FC4_FCP; 1762 if ((phba->cfg_enable_fc4_type == LPFC_ENABLE_BOTH) || 1763 (phba->cfg_enable_fc4_type == LPFC_ENABLE_NVME)) { 1764 ndlp->nlp_fc4_type |= NLP_FC4_NVME; 1765 /* We need to update the localport also */ 1766 lpfc_nvme_update_localport(vport); 1767 } 1768 1769 } else if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) { 1770 ndlp->nlp_fc4_type |= NLP_FC4_FCP; 1771 1772 } else if (ndlp->nlp_fc4_type == 0) { 1773 rc = lpfc_ns_cmd(vport, SLI_CTNS_GFT_ID, 1774 0, ndlp->nlp_DID); 1775 return ndlp->nlp_state; 1776 } 1777 1778 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE; 1779 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PRLI_ISSUE); 1780 lpfc_issue_els_prli(vport, ndlp, 0); 1781 } else { 1782 if ((vport->fc_flag & FC_PT2PT) && phba->nvmet_support) 1783 phba->targetport->port_id = vport->fc_myDID; 1784 1785 /* Only Fabric ports should transition. NVME target 1786 * must complete PRLI. 1787 */ 1788 if (ndlp->nlp_type & NLP_FABRIC) { 1789 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE; 1790 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE); 1791 } 1792 } 1793 return ndlp->nlp_state; 1794 } 1795 1796 static uint32_t 1797 lpfc_device_rm_reglogin_issue(struct lpfc_vport *vport, 1798 struct lpfc_nodelist *ndlp, 1799 void *arg, 1800 uint32_t evt) 1801 { 1802 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 1803 1804 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) { 1805 spin_lock_irq(shost->host_lock); 1806 ndlp->nlp_flag |= NLP_NODEV_REMOVE; 1807 spin_unlock_irq(shost->host_lock); 1808 return ndlp->nlp_state; 1809 } else { 1810 lpfc_drop_node(vport, ndlp); 1811 return NLP_STE_FREED_NODE; 1812 } 1813 } 1814 1815 static uint32_t 1816 lpfc_device_recov_reglogin_issue(struct lpfc_vport *vport, 1817 struct lpfc_nodelist *ndlp, 1818 void *arg, 1819 uint32_t evt) 1820 { 1821 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 1822 1823 /* Don't do anything that will mess up processing of the 1824 * previous RSCN. 1825 */ 1826 if (vport->fc_flag & FC_RSCN_DEFERRED) 1827 return ndlp->nlp_state; 1828 1829 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE; 1830 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE); 1831 spin_lock_irq(shost->host_lock); 1832 1833 /* If we are a target we won't immediately transition into PRLI, 1834 * so if REG_LOGIN already completed we don't need to ignore it. 1835 */ 1836 if (!(ndlp->nlp_flag & NLP_RPI_REGISTERED) || 1837 !vport->phba->nvmet_support) 1838 ndlp->nlp_flag |= NLP_IGNR_REG_CMPL; 1839 1840 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC); 1841 spin_unlock_irq(shost->host_lock); 1842 lpfc_disc_set_adisc(vport, ndlp); 1843 return ndlp->nlp_state; 1844 } 1845 1846 static uint32_t 1847 lpfc_rcv_plogi_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 1848 void *arg, uint32_t evt) 1849 { 1850 struct lpfc_iocbq *cmdiocb; 1851 1852 cmdiocb = (struct lpfc_iocbq *) arg; 1853 1854 lpfc_rcv_plogi(vport, ndlp, cmdiocb); 1855 return ndlp->nlp_state; 1856 } 1857 1858 static uint32_t 1859 lpfc_rcv_prli_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 1860 void *arg, uint32_t evt) 1861 { 1862 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg; 1863 1864 if (!lpfc_rcv_prli_support_check(vport, ndlp, cmdiocb)) 1865 return ndlp->nlp_state; 1866 lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp); 1867 return ndlp->nlp_state; 1868 } 1869 1870 static uint32_t 1871 lpfc_rcv_logo_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 1872 void *arg, uint32_t evt) 1873 { 1874 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg; 1875 1876 /* Software abort outstanding PRLI before sending acc */ 1877 lpfc_els_abort(vport->phba, ndlp); 1878 1879 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO); 1880 return ndlp->nlp_state; 1881 } 1882 1883 static uint32_t 1884 lpfc_rcv_padisc_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 1885 void *arg, uint32_t evt) 1886 { 1887 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg; 1888 1889 lpfc_rcv_padisc(vport, ndlp, cmdiocb); 1890 return ndlp->nlp_state; 1891 } 1892 1893 /* This routine is envoked when we rcv a PRLO request from a nport 1894 * we are logged into. We should send back a PRLO rsp setting the 1895 * appropriate bits. 1896 * NEXT STATE = PRLI_ISSUE 1897 */ 1898 static uint32_t 1899 lpfc_rcv_prlo_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 1900 void *arg, uint32_t evt) 1901 { 1902 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg; 1903 1904 lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL); 1905 return ndlp->nlp_state; 1906 } 1907 1908 static uint32_t 1909 lpfc_cmpl_prli_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 1910 void *arg, uint32_t evt) 1911 { 1912 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 1913 struct lpfc_iocbq *cmdiocb, *rspiocb; 1914 struct lpfc_hba *phba = vport->phba; 1915 IOCB_t *irsp; 1916 PRLI *npr; 1917 struct lpfc_nvme_prli *nvpr; 1918 void *temp_ptr; 1919 1920 cmdiocb = (struct lpfc_iocbq *) arg; 1921 rspiocb = cmdiocb->context_un.rsp_iocb; 1922 1923 /* A solicited PRLI is either FCP or NVME. The PRLI cmd/rsp 1924 * format is different so NULL the two PRLI types so that the 1925 * driver correctly gets the correct context. 1926 */ 1927 npr = NULL; 1928 nvpr = NULL; 1929 temp_ptr = lpfc_check_elscmpl_iocb(phba, cmdiocb, rspiocb); 1930 if (cmdiocb->iocb_flag & LPFC_PRLI_FCP_REQ) 1931 npr = (PRLI *) temp_ptr; 1932 else if (cmdiocb->iocb_flag & LPFC_PRLI_NVME_REQ) 1933 nvpr = (struct lpfc_nvme_prli *) temp_ptr; 1934 1935 irsp = &rspiocb->iocb; 1936 if (irsp->ulpStatus) { 1937 if ((vport->port_type == LPFC_NPIV_PORT) && 1938 vport->cfg_restrict_login) { 1939 goto out; 1940 } 1941 1942 /* Adjust the nlp_type accordingly if the PRLI failed */ 1943 if (npr) 1944 ndlp->nlp_fc4_type &= ~NLP_FC4_FCP; 1945 if (nvpr) 1946 ndlp->nlp_fc4_type &= ~NLP_FC4_NVME; 1947 1948 /* We can't set the DSM state till BOTH PRLIs complete */ 1949 goto out_err; 1950 } 1951 1952 if (npr && (npr->acceptRspCode == PRLI_REQ_EXECUTED) && 1953 (npr->prliType == PRLI_FCP_TYPE)) { 1954 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_DISC, 1955 "6028 FCP NPR PRLI Cmpl Init %d Target %d\n", 1956 npr->initiatorFunc, 1957 npr->targetFunc); 1958 if (npr->initiatorFunc) 1959 ndlp->nlp_type |= NLP_FCP_INITIATOR; 1960 if (npr->targetFunc) { 1961 ndlp->nlp_type |= NLP_FCP_TARGET; 1962 if (npr->writeXferRdyDis) 1963 ndlp->nlp_flag |= NLP_FIRSTBURST; 1964 } 1965 if (npr->Retry) 1966 ndlp->nlp_fcp_info |= NLP_FCP_2_DEVICE; 1967 1968 } else if (nvpr && 1969 (bf_get_be32(prli_acc_rsp_code, nvpr) == 1970 PRLI_REQ_EXECUTED) && 1971 (bf_get_be32(prli_type_code, nvpr) == 1972 PRLI_NVME_TYPE)) { 1973 1974 /* Complete setting up the remote ndlp personality. */ 1975 if (bf_get_be32(prli_init, nvpr)) 1976 ndlp->nlp_type |= NLP_NVME_INITIATOR; 1977 1978 /* Target driver cannot solicit NVME FB. */ 1979 if (bf_get_be32(prli_tgt, nvpr)) { 1980 /* Complete the nvme target roles. The transport 1981 * needs to know if the rport is capable of 1982 * discovery in addition to its role. 1983 */ 1984 ndlp->nlp_type |= NLP_NVME_TARGET; 1985 if (bf_get_be32(prli_disc, nvpr)) 1986 ndlp->nlp_type |= NLP_NVME_DISCOVERY; 1987 1988 /* 1989 * If prli_fba is set, the Target supports FirstBurst. 1990 * If prli_fb_sz is 0, the FirstBurst size is unlimited, 1991 * otherwise it defines the actual size supported by 1992 * the NVME Target. 1993 */ 1994 if ((bf_get_be32(prli_fba, nvpr) == 1) && 1995 (phba->cfg_nvme_enable_fb) && 1996 (!phba->nvmet_support)) { 1997 /* Both sides support FB. The target's first 1998 * burst size is a 512 byte encoded value. 1999 */ 2000 ndlp->nlp_flag |= NLP_FIRSTBURST; 2001 ndlp->nvme_fb_size = bf_get_be32(prli_fb_sz, 2002 nvpr); 2003 2004 /* Expressed in units of 512 bytes */ 2005 if (ndlp->nvme_fb_size) 2006 ndlp->nvme_fb_size <<= 2007 LPFC_NVME_FB_SHIFT; 2008 else 2009 ndlp->nvme_fb_size = LPFC_NVME_MAX_FB; 2010 } 2011 } 2012 2013 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_DISC, 2014 "6029 NVME PRLI Cmpl w1 x%08x " 2015 "w4 x%08x w5 x%08x flag x%x, " 2016 "fcp_info x%x nlp_type x%x\n", 2017 be32_to_cpu(nvpr->word1), 2018 be32_to_cpu(nvpr->word4), 2019 be32_to_cpu(nvpr->word5), 2020 ndlp->nlp_flag, ndlp->nlp_fcp_info, 2021 ndlp->nlp_type); 2022 } 2023 if (!(ndlp->nlp_type & NLP_FCP_TARGET) && 2024 (vport->port_type == LPFC_NPIV_PORT) && 2025 vport->cfg_restrict_login) { 2026 out: 2027 spin_lock_irq(shost->host_lock); 2028 ndlp->nlp_flag |= NLP_TARGET_REMOVE; 2029 spin_unlock_irq(shost->host_lock); 2030 lpfc_issue_els_logo(vport, ndlp, 0); 2031 2032 ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE; 2033 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE); 2034 return ndlp->nlp_state; 2035 } 2036 2037 out_err: 2038 /* The ndlp state cannot move to MAPPED or UNMAPPED before all PRLIs 2039 * are complete. 2040 */ 2041 if (ndlp->fc4_prli_sent == 0) { 2042 ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE; 2043 if (ndlp->nlp_type & (NLP_FCP_TARGET | NLP_NVME_TARGET)) 2044 lpfc_nlp_set_state(vport, ndlp, NLP_STE_MAPPED_NODE); 2045 else if (ndlp->nlp_type & 2046 (NLP_FCP_INITIATOR | NLP_NVME_INITIATOR)) 2047 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE); 2048 } else 2049 lpfc_printf_vlog(vport, 2050 KERN_INFO, LOG_ELS, 2051 "3067 PRLI's still outstanding " 2052 "on x%06x - count %d, Pend Node Mode " 2053 "transition...\n", 2054 ndlp->nlp_DID, ndlp->fc4_prli_sent); 2055 2056 return ndlp->nlp_state; 2057 } 2058 2059 /*! lpfc_device_rm_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 * This routine is envoked when we a request to remove a nport we are in the 2071 * process of PRLIing. We should software abort outstanding prli, unreg 2072 * login, send a logout. We will change node state to UNUSED_NODE, put it 2073 * on plogi list so it can be freed when LOGO completes. 2074 * 2075 */ 2076 2077 static uint32_t 2078 lpfc_device_rm_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 2079 void *arg, uint32_t evt) 2080 { 2081 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 2082 2083 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) { 2084 spin_lock_irq(shost->host_lock); 2085 ndlp->nlp_flag |= NLP_NODEV_REMOVE; 2086 spin_unlock_irq(shost->host_lock); 2087 return ndlp->nlp_state; 2088 } else { 2089 /* software abort outstanding PLOGI */ 2090 lpfc_els_abort(vport->phba, ndlp); 2091 2092 lpfc_drop_node(vport, ndlp); 2093 return NLP_STE_FREED_NODE; 2094 } 2095 } 2096 2097 2098 /*! lpfc_device_recov_prli_issue 2099 * 2100 * \pre 2101 * \post 2102 * \param phba 2103 * \param ndlp 2104 * \param arg 2105 * \param evt 2106 * \return uint32_t 2107 * 2108 * \b Description: 2109 * The routine is envoked when the state of a device is unknown, like 2110 * during a link down. We should remove the nodelist entry from the 2111 * unmapped list, issue a UNREG_LOGIN, do a software abort of the 2112 * outstanding PRLI command, then free the node entry. 2113 */ 2114 static uint32_t 2115 lpfc_device_recov_prli_issue(struct lpfc_vport *vport, 2116 struct lpfc_nodelist *ndlp, 2117 void *arg, 2118 uint32_t evt) 2119 { 2120 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 2121 struct lpfc_hba *phba = vport->phba; 2122 2123 /* Don't do anything that will mess up processing of the 2124 * previous RSCN. 2125 */ 2126 if (vport->fc_flag & FC_RSCN_DEFERRED) 2127 return ndlp->nlp_state; 2128 2129 /* software abort outstanding PRLI */ 2130 lpfc_els_abort(phba, ndlp); 2131 2132 ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE; 2133 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE); 2134 spin_lock_irq(shost->host_lock); 2135 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC); 2136 spin_unlock_irq(shost->host_lock); 2137 lpfc_disc_set_adisc(vport, ndlp); 2138 return ndlp->nlp_state; 2139 } 2140 2141 static uint32_t 2142 lpfc_rcv_plogi_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 2143 void *arg, uint32_t evt) 2144 { 2145 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *)arg; 2146 struct ls_rjt stat; 2147 2148 memset(&stat, 0, sizeof(struct ls_rjt)); 2149 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC; 2150 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE; 2151 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL); 2152 return ndlp->nlp_state; 2153 } 2154 2155 static uint32_t 2156 lpfc_rcv_prli_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 2157 void *arg, uint32_t evt) 2158 { 2159 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *)arg; 2160 struct ls_rjt stat; 2161 2162 memset(&stat, 0, sizeof(struct ls_rjt)); 2163 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC; 2164 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE; 2165 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL); 2166 return ndlp->nlp_state; 2167 } 2168 2169 static uint32_t 2170 lpfc_rcv_logo_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 2171 void *arg, uint32_t evt) 2172 { 2173 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 2174 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *)arg; 2175 2176 spin_lock_irq(shost->host_lock); 2177 ndlp->nlp_flag |= NLP_LOGO_ACC; 2178 spin_unlock_irq(shost->host_lock); 2179 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL); 2180 return ndlp->nlp_state; 2181 } 2182 2183 static uint32_t 2184 lpfc_rcv_padisc_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 2185 void *arg, uint32_t evt) 2186 { 2187 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *)arg; 2188 struct ls_rjt stat; 2189 2190 memset(&stat, 0, sizeof(struct ls_rjt)); 2191 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC; 2192 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE; 2193 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL); 2194 return ndlp->nlp_state; 2195 } 2196 2197 static uint32_t 2198 lpfc_rcv_prlo_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 2199 void *arg, uint32_t evt) 2200 { 2201 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *)arg; 2202 struct ls_rjt stat; 2203 2204 memset(&stat, 0, sizeof(struct ls_rjt)); 2205 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC; 2206 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE; 2207 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL); 2208 return ndlp->nlp_state; 2209 } 2210 2211 static uint32_t 2212 lpfc_cmpl_logo_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 2213 void *arg, uint32_t evt) 2214 { 2215 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 2216 2217 ndlp->nlp_prev_state = NLP_STE_LOGO_ISSUE; 2218 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE); 2219 spin_lock_irq(shost->host_lock); 2220 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC); 2221 spin_unlock_irq(shost->host_lock); 2222 lpfc_disc_set_adisc(vport, ndlp); 2223 return ndlp->nlp_state; 2224 } 2225 2226 static uint32_t 2227 lpfc_device_rm_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 2228 void *arg, uint32_t evt) 2229 { 2230 /* 2231 * DevLoss has timed out and is calling for Device Remove. 2232 * In this case, abort the LOGO and cleanup the ndlp 2233 */ 2234 2235 lpfc_unreg_rpi(vport, ndlp); 2236 /* software abort outstanding PLOGI */ 2237 lpfc_els_abort(vport->phba, ndlp); 2238 lpfc_drop_node(vport, ndlp); 2239 return NLP_STE_FREED_NODE; 2240 } 2241 2242 static uint32_t 2243 lpfc_device_recov_logo_issue(struct lpfc_vport *vport, 2244 struct lpfc_nodelist *ndlp, 2245 void *arg, uint32_t evt) 2246 { 2247 /* 2248 * Device Recovery events have no meaning for a node with a LOGO 2249 * outstanding. The LOGO has to complete first and handle the 2250 * node from that point. 2251 */ 2252 return ndlp->nlp_state; 2253 } 2254 2255 static uint32_t 2256 lpfc_rcv_plogi_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 2257 void *arg, uint32_t evt) 2258 { 2259 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg; 2260 2261 lpfc_rcv_plogi(vport, ndlp, cmdiocb); 2262 return ndlp->nlp_state; 2263 } 2264 2265 static uint32_t 2266 lpfc_rcv_prli_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 2267 void *arg, uint32_t evt) 2268 { 2269 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg; 2270 2271 if (!lpfc_rcv_prli_support_check(vport, ndlp, cmdiocb)) 2272 return ndlp->nlp_state; 2273 2274 lpfc_rcv_prli(vport, ndlp, cmdiocb); 2275 lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp); 2276 return ndlp->nlp_state; 2277 } 2278 2279 static uint32_t 2280 lpfc_rcv_logo_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 2281 void *arg, uint32_t evt) 2282 { 2283 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg; 2284 2285 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO); 2286 return ndlp->nlp_state; 2287 } 2288 2289 static uint32_t 2290 lpfc_rcv_padisc_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 2291 void *arg, uint32_t evt) 2292 { 2293 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg; 2294 2295 lpfc_rcv_padisc(vport, ndlp, cmdiocb); 2296 return ndlp->nlp_state; 2297 } 2298 2299 static uint32_t 2300 lpfc_rcv_prlo_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 2301 void *arg, uint32_t evt) 2302 { 2303 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg; 2304 2305 lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL); 2306 return ndlp->nlp_state; 2307 } 2308 2309 static uint32_t 2310 lpfc_device_recov_unmap_node(struct lpfc_vport *vport, 2311 struct lpfc_nodelist *ndlp, 2312 void *arg, 2313 uint32_t evt) 2314 { 2315 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 2316 2317 ndlp->nlp_prev_state = NLP_STE_UNMAPPED_NODE; 2318 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE); 2319 spin_lock_irq(shost->host_lock); 2320 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC); 2321 spin_unlock_irq(shost->host_lock); 2322 lpfc_disc_set_adisc(vport, ndlp); 2323 2324 return ndlp->nlp_state; 2325 } 2326 2327 static uint32_t 2328 lpfc_rcv_plogi_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 2329 void *arg, uint32_t evt) 2330 { 2331 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg; 2332 2333 lpfc_rcv_plogi(vport, ndlp, cmdiocb); 2334 return ndlp->nlp_state; 2335 } 2336 2337 static uint32_t 2338 lpfc_rcv_prli_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 2339 void *arg, uint32_t evt) 2340 { 2341 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg; 2342 2343 if (!lpfc_rcv_prli_support_check(vport, ndlp, cmdiocb)) 2344 return ndlp->nlp_state; 2345 lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp); 2346 return ndlp->nlp_state; 2347 } 2348 2349 static uint32_t 2350 lpfc_rcv_logo_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 2351 void *arg, uint32_t evt) 2352 { 2353 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg; 2354 2355 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO); 2356 return ndlp->nlp_state; 2357 } 2358 2359 static uint32_t 2360 lpfc_rcv_padisc_mapped_node(struct lpfc_vport *vport, 2361 struct lpfc_nodelist *ndlp, 2362 void *arg, uint32_t evt) 2363 { 2364 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg; 2365 2366 lpfc_rcv_padisc(vport, ndlp, cmdiocb); 2367 return ndlp->nlp_state; 2368 } 2369 2370 static uint32_t 2371 lpfc_rcv_prlo_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 2372 void *arg, uint32_t evt) 2373 { 2374 struct lpfc_hba *phba = vport->phba; 2375 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg; 2376 2377 /* flush the target */ 2378 lpfc_sli_abort_iocb(vport, &phba->sli.sli3_ring[LPFC_FCP_RING], 2379 ndlp->nlp_sid, 0, LPFC_CTX_TGT); 2380 2381 /* Treat like rcv logo */ 2382 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_PRLO); 2383 return ndlp->nlp_state; 2384 } 2385 2386 static uint32_t 2387 lpfc_device_recov_mapped_node(struct lpfc_vport *vport, 2388 struct lpfc_nodelist *ndlp, 2389 void *arg, 2390 uint32_t evt) 2391 { 2392 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 2393 2394 ndlp->nlp_prev_state = NLP_STE_MAPPED_NODE; 2395 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE); 2396 spin_lock_irq(shost->host_lock); 2397 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC); 2398 spin_unlock_irq(shost->host_lock); 2399 lpfc_disc_set_adisc(vport, ndlp); 2400 return ndlp->nlp_state; 2401 } 2402 2403 static uint32_t 2404 lpfc_rcv_plogi_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 2405 void *arg, uint32_t evt) 2406 { 2407 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 2408 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg; 2409 2410 /* Ignore PLOGI if we have an outstanding LOGO */ 2411 if (ndlp->nlp_flag & (NLP_LOGO_SND | NLP_LOGO_ACC)) 2412 return ndlp->nlp_state; 2413 if (lpfc_rcv_plogi(vport, ndlp, cmdiocb)) { 2414 lpfc_cancel_retry_delay_tmo(vport, ndlp); 2415 spin_lock_irq(shost->host_lock); 2416 ndlp->nlp_flag &= ~(NLP_NPR_ADISC | NLP_NPR_2B_DISC); 2417 spin_unlock_irq(shost->host_lock); 2418 } else if (!(ndlp->nlp_flag & NLP_NPR_2B_DISC)) { 2419 /* send PLOGI immediately, move to PLOGI issue state */ 2420 if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) { 2421 ndlp->nlp_prev_state = NLP_STE_NPR_NODE; 2422 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE); 2423 lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0); 2424 } 2425 } 2426 return ndlp->nlp_state; 2427 } 2428 2429 static uint32_t 2430 lpfc_rcv_prli_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 2431 void *arg, uint32_t evt) 2432 { 2433 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 2434 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg; 2435 struct ls_rjt stat; 2436 2437 memset(&stat, 0, sizeof (struct ls_rjt)); 2438 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC; 2439 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE; 2440 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL); 2441 2442 if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) { 2443 if (ndlp->nlp_flag & NLP_NPR_ADISC) { 2444 spin_lock_irq(shost->host_lock); 2445 ndlp->nlp_flag &= ~NLP_NPR_ADISC; 2446 ndlp->nlp_prev_state = NLP_STE_NPR_NODE; 2447 spin_unlock_irq(shost->host_lock); 2448 lpfc_nlp_set_state(vport, ndlp, NLP_STE_ADISC_ISSUE); 2449 lpfc_issue_els_adisc(vport, ndlp, 0); 2450 } else { 2451 ndlp->nlp_prev_state = NLP_STE_NPR_NODE; 2452 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE); 2453 lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0); 2454 } 2455 } 2456 return ndlp->nlp_state; 2457 } 2458 2459 static uint32_t 2460 lpfc_rcv_logo_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 2461 void *arg, uint32_t evt) 2462 { 2463 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg; 2464 2465 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO); 2466 return ndlp->nlp_state; 2467 } 2468 2469 static uint32_t 2470 lpfc_rcv_padisc_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 2471 void *arg, uint32_t evt) 2472 { 2473 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg; 2474 2475 lpfc_rcv_padisc(vport, ndlp, cmdiocb); 2476 /* 2477 * Do not start discovery if discovery is about to start 2478 * or discovery in progress for this node. Starting discovery 2479 * here will affect the counting of discovery threads. 2480 */ 2481 if (!(ndlp->nlp_flag & NLP_DELAY_TMO) && 2482 !(ndlp->nlp_flag & NLP_NPR_2B_DISC)) { 2483 if (ndlp->nlp_flag & NLP_NPR_ADISC) { 2484 ndlp->nlp_flag &= ~NLP_NPR_ADISC; 2485 ndlp->nlp_prev_state = NLP_STE_NPR_NODE; 2486 lpfc_nlp_set_state(vport, ndlp, NLP_STE_ADISC_ISSUE); 2487 lpfc_issue_els_adisc(vport, ndlp, 0); 2488 } else { 2489 ndlp->nlp_prev_state = NLP_STE_NPR_NODE; 2490 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE); 2491 lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0); 2492 } 2493 } 2494 return ndlp->nlp_state; 2495 } 2496 2497 static uint32_t 2498 lpfc_rcv_prlo_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 2499 void *arg, uint32_t evt) 2500 { 2501 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 2502 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg; 2503 2504 spin_lock_irq(shost->host_lock); 2505 ndlp->nlp_flag |= NLP_LOGO_ACC; 2506 spin_unlock_irq(shost->host_lock); 2507 2508 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL); 2509 2510 if ((ndlp->nlp_flag & NLP_DELAY_TMO) == 0) { 2511 mod_timer(&ndlp->nlp_delayfunc, 2512 jiffies + msecs_to_jiffies(1000 * 1)); 2513 spin_lock_irq(shost->host_lock); 2514 ndlp->nlp_flag |= NLP_DELAY_TMO; 2515 ndlp->nlp_flag &= ~NLP_NPR_ADISC; 2516 spin_unlock_irq(shost->host_lock); 2517 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI; 2518 } else { 2519 spin_lock_irq(shost->host_lock); 2520 ndlp->nlp_flag &= ~NLP_NPR_ADISC; 2521 spin_unlock_irq(shost->host_lock); 2522 } 2523 return ndlp->nlp_state; 2524 } 2525 2526 static uint32_t 2527 lpfc_cmpl_plogi_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 2528 void *arg, uint32_t evt) 2529 { 2530 struct lpfc_iocbq *cmdiocb, *rspiocb; 2531 IOCB_t *irsp; 2532 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 2533 2534 cmdiocb = (struct lpfc_iocbq *) arg; 2535 rspiocb = cmdiocb->context_un.rsp_iocb; 2536 2537 irsp = &rspiocb->iocb; 2538 if (irsp->ulpStatus) { 2539 spin_lock_irq(shost->host_lock); 2540 ndlp->nlp_flag |= NLP_DEFER_RM; 2541 spin_unlock_irq(shost->host_lock); 2542 return NLP_STE_FREED_NODE; 2543 } 2544 return ndlp->nlp_state; 2545 } 2546 2547 static uint32_t 2548 lpfc_cmpl_prli_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 2549 void *arg, uint32_t evt) 2550 { 2551 struct lpfc_iocbq *cmdiocb, *rspiocb; 2552 IOCB_t *irsp; 2553 2554 cmdiocb = (struct lpfc_iocbq *) arg; 2555 rspiocb = cmdiocb->context_un.rsp_iocb; 2556 2557 irsp = &rspiocb->iocb; 2558 if (irsp->ulpStatus && (ndlp->nlp_flag & NLP_NODEV_REMOVE)) { 2559 lpfc_drop_node(vport, ndlp); 2560 return NLP_STE_FREED_NODE; 2561 } 2562 return ndlp->nlp_state; 2563 } 2564 2565 static uint32_t 2566 lpfc_cmpl_logo_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 2567 void *arg, uint32_t evt) 2568 { 2569 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 2570 2571 /* For the fabric port just clear the fc flags. */ 2572 if (ndlp->nlp_DID == Fabric_DID) { 2573 spin_lock_irq(shost->host_lock); 2574 vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP); 2575 spin_unlock_irq(shost->host_lock); 2576 } 2577 lpfc_unreg_rpi(vport, ndlp); 2578 return ndlp->nlp_state; 2579 } 2580 2581 static uint32_t 2582 lpfc_cmpl_adisc_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 2583 void *arg, uint32_t evt) 2584 { 2585 struct lpfc_iocbq *cmdiocb, *rspiocb; 2586 IOCB_t *irsp; 2587 2588 cmdiocb = (struct lpfc_iocbq *) arg; 2589 rspiocb = cmdiocb->context_un.rsp_iocb; 2590 2591 irsp = &rspiocb->iocb; 2592 if (irsp->ulpStatus && (ndlp->nlp_flag & NLP_NODEV_REMOVE)) { 2593 lpfc_drop_node(vport, ndlp); 2594 return NLP_STE_FREED_NODE; 2595 } 2596 return ndlp->nlp_state; 2597 } 2598 2599 static uint32_t 2600 lpfc_cmpl_reglogin_npr_node(struct lpfc_vport *vport, 2601 struct lpfc_nodelist *ndlp, 2602 void *arg, uint32_t evt) 2603 { 2604 LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg; 2605 MAILBOX_t *mb = &pmb->u.mb; 2606 2607 if (!mb->mbxStatus) { 2608 /* SLI4 ports have preallocated logical rpis. */ 2609 if (vport->phba->sli_rev < LPFC_SLI_REV4) 2610 ndlp->nlp_rpi = mb->un.varWords[0]; 2611 ndlp->nlp_flag |= NLP_RPI_REGISTERED; 2612 if (ndlp->nlp_flag & NLP_LOGO_ACC) { 2613 lpfc_unreg_rpi(vport, ndlp); 2614 } 2615 } else { 2616 if (ndlp->nlp_flag & NLP_NODEV_REMOVE) { 2617 lpfc_drop_node(vport, ndlp); 2618 return NLP_STE_FREED_NODE; 2619 } 2620 } 2621 return ndlp->nlp_state; 2622 } 2623 2624 static uint32_t 2625 lpfc_device_rm_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 2626 void *arg, uint32_t evt) 2627 { 2628 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 2629 2630 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) { 2631 spin_lock_irq(shost->host_lock); 2632 ndlp->nlp_flag |= NLP_NODEV_REMOVE; 2633 spin_unlock_irq(shost->host_lock); 2634 return ndlp->nlp_state; 2635 } 2636 lpfc_drop_node(vport, ndlp); 2637 return NLP_STE_FREED_NODE; 2638 } 2639 2640 static uint32_t 2641 lpfc_device_recov_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 2642 void *arg, uint32_t evt) 2643 { 2644 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 2645 2646 /* Don't do anything that will mess up processing of the 2647 * previous RSCN. 2648 */ 2649 if (vport->fc_flag & FC_RSCN_DEFERRED) 2650 return ndlp->nlp_state; 2651 2652 lpfc_cancel_retry_delay_tmo(vport, ndlp); 2653 spin_lock_irq(shost->host_lock); 2654 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC); 2655 spin_unlock_irq(shost->host_lock); 2656 return ndlp->nlp_state; 2657 } 2658 2659 2660 /* This next section defines the NPort Discovery State Machine */ 2661 2662 /* There are 4 different double linked lists nodelist entries can reside on. 2663 * The plogi list and adisc list are used when Link Up discovery or RSCN 2664 * processing is needed. Each list holds the nodes that we will send PLOGI 2665 * or ADISC on. These lists will keep track of what nodes will be effected 2666 * by an RSCN, or a Link Up (Typically, all nodes are effected on Link Up). 2667 * The unmapped_list will contain all nodes that we have successfully logged 2668 * into at the Fibre Channel level. The mapped_list will contain all nodes 2669 * that are mapped FCP targets. 2670 */ 2671 /* 2672 * The bind list is a list of undiscovered (potentially non-existent) nodes 2673 * that we have saved binding information on. This information is used when 2674 * nodes transition from the unmapped to the mapped list. 2675 */ 2676 /* For UNUSED_NODE state, the node has just been allocated . 2677 * For PLOGI_ISSUE and REG_LOGIN_ISSUE, the node is on 2678 * the PLOGI list. For REG_LOGIN_COMPL, the node is taken off the PLOGI list 2679 * and put on the unmapped list. For ADISC processing, the node is taken off 2680 * the ADISC list and placed on either the mapped or unmapped list (depending 2681 * on its previous state). Once on the unmapped list, a PRLI is issued and the 2682 * state changed to PRLI_ISSUE. When the PRLI completion occurs, the state is 2683 * changed to UNMAPPED_NODE. If the completion indicates a mapped 2684 * node, the node is taken off the unmapped list. The binding list is checked 2685 * for a valid binding, or a binding is automatically assigned. If binding 2686 * assignment is unsuccessful, the node is left on the unmapped list. If 2687 * binding assignment is successful, the associated binding list entry (if 2688 * any) is removed, and the node is placed on the mapped list. 2689 */ 2690 /* 2691 * For a Link Down, all nodes on the ADISC, PLOGI, unmapped or mapped 2692 * lists will receive a DEVICE_RECOVERY event. If the linkdown or devloss timers 2693 * expire, all effected nodes will receive a DEVICE_RM event. 2694 */ 2695 /* 2696 * For a Link Up or RSCN, all nodes will move from the mapped / unmapped lists 2697 * to either the ADISC or PLOGI list. After a Nameserver query or ALPA loopmap 2698 * check, additional nodes may be added or removed (via DEVICE_RM) to / from 2699 * the PLOGI or ADISC lists. Once the PLOGI and ADISC lists are populated, 2700 * we will first process the ADISC list. 32 entries are processed initially and 2701 * ADISC is initited for each one. Completions / Events for each node are 2702 * funnelled thru the state machine. As each node finishes ADISC processing, it 2703 * starts ADISC for any nodes waiting for ADISC processing. If no nodes are 2704 * waiting, and the ADISC list count is identically 0, then we are done. For 2705 * Link Up discovery, since all nodes on the PLOGI list are UNREG_LOGIN'ed, we 2706 * can issue a CLEAR_LA and reenable Link Events. Next we will process the PLOGI 2707 * list. 32 entries are processed initially and PLOGI is initited for each one. 2708 * Completions / Events for each node are funnelled thru the state machine. As 2709 * each node finishes PLOGI processing, it starts PLOGI for any nodes waiting 2710 * for PLOGI processing. If no nodes are waiting, and the PLOGI list count is 2711 * indentically 0, then we are done. We have now completed discovery / RSCN 2712 * handling. Upon completion, ALL nodes should be on either the mapped or 2713 * unmapped lists. 2714 */ 2715 2716 static uint32_t (*lpfc_disc_action[NLP_STE_MAX_STATE * NLP_EVT_MAX_EVENT]) 2717 (struct lpfc_vport *, struct lpfc_nodelist *, void *, uint32_t) = { 2718 /* Action routine Event Current State */ 2719 lpfc_rcv_plogi_unused_node, /* RCV_PLOGI UNUSED_NODE */ 2720 lpfc_rcv_els_unused_node, /* RCV_PRLI */ 2721 lpfc_rcv_logo_unused_node, /* RCV_LOGO */ 2722 lpfc_rcv_els_unused_node, /* RCV_ADISC */ 2723 lpfc_rcv_els_unused_node, /* RCV_PDISC */ 2724 lpfc_rcv_els_unused_node, /* RCV_PRLO */ 2725 lpfc_disc_illegal, /* CMPL_PLOGI */ 2726 lpfc_disc_illegal, /* CMPL_PRLI */ 2727 lpfc_cmpl_logo_unused_node, /* CMPL_LOGO */ 2728 lpfc_disc_illegal, /* CMPL_ADISC */ 2729 lpfc_disc_illegal, /* CMPL_REG_LOGIN */ 2730 lpfc_device_rm_unused_node, /* DEVICE_RM */ 2731 lpfc_device_recov_unused_node, /* DEVICE_RECOVERY */ 2732 2733 lpfc_rcv_plogi_plogi_issue, /* RCV_PLOGI PLOGI_ISSUE */ 2734 lpfc_rcv_prli_plogi_issue, /* RCV_PRLI */ 2735 lpfc_rcv_logo_plogi_issue, /* RCV_LOGO */ 2736 lpfc_rcv_els_plogi_issue, /* RCV_ADISC */ 2737 lpfc_rcv_els_plogi_issue, /* RCV_PDISC */ 2738 lpfc_rcv_els_plogi_issue, /* RCV_PRLO */ 2739 lpfc_cmpl_plogi_plogi_issue, /* CMPL_PLOGI */ 2740 lpfc_disc_illegal, /* CMPL_PRLI */ 2741 lpfc_cmpl_logo_plogi_issue, /* CMPL_LOGO */ 2742 lpfc_disc_illegal, /* CMPL_ADISC */ 2743 lpfc_cmpl_reglogin_plogi_issue,/* CMPL_REG_LOGIN */ 2744 lpfc_device_rm_plogi_issue, /* DEVICE_RM */ 2745 lpfc_device_recov_plogi_issue, /* DEVICE_RECOVERY */ 2746 2747 lpfc_rcv_plogi_adisc_issue, /* RCV_PLOGI ADISC_ISSUE */ 2748 lpfc_rcv_prli_adisc_issue, /* RCV_PRLI */ 2749 lpfc_rcv_logo_adisc_issue, /* RCV_LOGO */ 2750 lpfc_rcv_padisc_adisc_issue, /* RCV_ADISC */ 2751 lpfc_rcv_padisc_adisc_issue, /* RCV_PDISC */ 2752 lpfc_rcv_prlo_adisc_issue, /* RCV_PRLO */ 2753 lpfc_disc_illegal, /* CMPL_PLOGI */ 2754 lpfc_disc_illegal, /* CMPL_PRLI */ 2755 lpfc_disc_illegal, /* CMPL_LOGO */ 2756 lpfc_cmpl_adisc_adisc_issue, /* CMPL_ADISC */ 2757 lpfc_disc_illegal, /* CMPL_REG_LOGIN */ 2758 lpfc_device_rm_adisc_issue, /* DEVICE_RM */ 2759 lpfc_device_recov_adisc_issue, /* DEVICE_RECOVERY */ 2760 2761 lpfc_rcv_plogi_reglogin_issue, /* RCV_PLOGI REG_LOGIN_ISSUE */ 2762 lpfc_rcv_prli_reglogin_issue, /* RCV_PLOGI */ 2763 lpfc_rcv_logo_reglogin_issue, /* RCV_LOGO */ 2764 lpfc_rcv_padisc_reglogin_issue, /* RCV_ADISC */ 2765 lpfc_rcv_padisc_reglogin_issue, /* RCV_PDISC */ 2766 lpfc_rcv_prlo_reglogin_issue, /* RCV_PRLO */ 2767 lpfc_cmpl_plogi_illegal, /* CMPL_PLOGI */ 2768 lpfc_disc_illegal, /* CMPL_PRLI */ 2769 lpfc_disc_illegal, /* CMPL_LOGO */ 2770 lpfc_disc_illegal, /* CMPL_ADISC */ 2771 lpfc_cmpl_reglogin_reglogin_issue,/* CMPL_REG_LOGIN */ 2772 lpfc_device_rm_reglogin_issue, /* DEVICE_RM */ 2773 lpfc_device_recov_reglogin_issue,/* DEVICE_RECOVERY */ 2774 2775 lpfc_rcv_plogi_prli_issue, /* RCV_PLOGI PRLI_ISSUE */ 2776 lpfc_rcv_prli_prli_issue, /* RCV_PRLI */ 2777 lpfc_rcv_logo_prli_issue, /* RCV_LOGO */ 2778 lpfc_rcv_padisc_prli_issue, /* RCV_ADISC */ 2779 lpfc_rcv_padisc_prli_issue, /* RCV_PDISC */ 2780 lpfc_rcv_prlo_prli_issue, /* RCV_PRLO */ 2781 lpfc_cmpl_plogi_illegal, /* CMPL_PLOGI */ 2782 lpfc_cmpl_prli_prli_issue, /* CMPL_PRLI */ 2783 lpfc_disc_illegal, /* CMPL_LOGO */ 2784 lpfc_disc_illegal, /* CMPL_ADISC */ 2785 lpfc_disc_illegal, /* CMPL_REG_LOGIN */ 2786 lpfc_device_rm_prli_issue, /* DEVICE_RM */ 2787 lpfc_device_recov_prli_issue, /* DEVICE_RECOVERY */ 2788 2789 lpfc_rcv_plogi_logo_issue, /* RCV_PLOGI LOGO_ISSUE */ 2790 lpfc_rcv_prli_logo_issue, /* RCV_PRLI */ 2791 lpfc_rcv_logo_logo_issue, /* RCV_LOGO */ 2792 lpfc_rcv_padisc_logo_issue, /* RCV_ADISC */ 2793 lpfc_rcv_padisc_logo_issue, /* RCV_PDISC */ 2794 lpfc_rcv_prlo_logo_issue, /* RCV_PRLO */ 2795 lpfc_cmpl_plogi_illegal, /* CMPL_PLOGI */ 2796 lpfc_disc_illegal, /* CMPL_PRLI */ 2797 lpfc_cmpl_logo_logo_issue, /* CMPL_LOGO */ 2798 lpfc_disc_illegal, /* CMPL_ADISC */ 2799 lpfc_disc_illegal, /* CMPL_REG_LOGIN */ 2800 lpfc_device_rm_logo_issue, /* DEVICE_RM */ 2801 lpfc_device_recov_logo_issue, /* DEVICE_RECOVERY */ 2802 2803 lpfc_rcv_plogi_unmap_node, /* RCV_PLOGI UNMAPPED_NODE */ 2804 lpfc_rcv_prli_unmap_node, /* RCV_PRLI */ 2805 lpfc_rcv_logo_unmap_node, /* RCV_LOGO */ 2806 lpfc_rcv_padisc_unmap_node, /* RCV_ADISC */ 2807 lpfc_rcv_padisc_unmap_node, /* RCV_PDISC */ 2808 lpfc_rcv_prlo_unmap_node, /* RCV_PRLO */ 2809 lpfc_disc_illegal, /* CMPL_PLOGI */ 2810 lpfc_disc_illegal, /* CMPL_PRLI */ 2811 lpfc_disc_illegal, /* CMPL_LOGO */ 2812 lpfc_disc_illegal, /* CMPL_ADISC */ 2813 lpfc_disc_illegal, /* CMPL_REG_LOGIN */ 2814 lpfc_disc_illegal, /* DEVICE_RM */ 2815 lpfc_device_recov_unmap_node, /* DEVICE_RECOVERY */ 2816 2817 lpfc_rcv_plogi_mapped_node, /* RCV_PLOGI MAPPED_NODE */ 2818 lpfc_rcv_prli_mapped_node, /* RCV_PRLI */ 2819 lpfc_rcv_logo_mapped_node, /* RCV_LOGO */ 2820 lpfc_rcv_padisc_mapped_node, /* RCV_ADISC */ 2821 lpfc_rcv_padisc_mapped_node, /* RCV_PDISC */ 2822 lpfc_rcv_prlo_mapped_node, /* RCV_PRLO */ 2823 lpfc_disc_illegal, /* CMPL_PLOGI */ 2824 lpfc_disc_illegal, /* CMPL_PRLI */ 2825 lpfc_disc_illegal, /* CMPL_LOGO */ 2826 lpfc_disc_illegal, /* CMPL_ADISC */ 2827 lpfc_disc_illegal, /* CMPL_REG_LOGIN */ 2828 lpfc_disc_illegal, /* DEVICE_RM */ 2829 lpfc_device_recov_mapped_node, /* DEVICE_RECOVERY */ 2830 2831 lpfc_rcv_plogi_npr_node, /* RCV_PLOGI NPR_NODE */ 2832 lpfc_rcv_prli_npr_node, /* RCV_PRLI */ 2833 lpfc_rcv_logo_npr_node, /* RCV_LOGO */ 2834 lpfc_rcv_padisc_npr_node, /* RCV_ADISC */ 2835 lpfc_rcv_padisc_npr_node, /* RCV_PDISC */ 2836 lpfc_rcv_prlo_npr_node, /* RCV_PRLO */ 2837 lpfc_cmpl_plogi_npr_node, /* CMPL_PLOGI */ 2838 lpfc_cmpl_prli_npr_node, /* CMPL_PRLI */ 2839 lpfc_cmpl_logo_npr_node, /* CMPL_LOGO */ 2840 lpfc_cmpl_adisc_npr_node, /* CMPL_ADISC */ 2841 lpfc_cmpl_reglogin_npr_node, /* CMPL_REG_LOGIN */ 2842 lpfc_device_rm_npr_node, /* DEVICE_RM */ 2843 lpfc_device_recov_npr_node, /* DEVICE_RECOVERY */ 2844 }; 2845 2846 int 2847 lpfc_disc_state_machine(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 2848 void *arg, uint32_t evt) 2849 { 2850 uint32_t cur_state, rc; 2851 uint32_t(*func) (struct lpfc_vport *, struct lpfc_nodelist *, void *, 2852 uint32_t); 2853 uint32_t got_ndlp = 0; 2854 2855 if (lpfc_nlp_get(ndlp)) 2856 got_ndlp = 1; 2857 2858 cur_state = ndlp->nlp_state; 2859 2860 /* DSM in event <evt> on NPort <nlp_DID> in state <cur_state> */ 2861 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, 2862 "0211 DSM in event x%x on NPort x%x in " 2863 "state %d Data: x%x\n", 2864 evt, ndlp->nlp_DID, cur_state, ndlp->nlp_flag); 2865 2866 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_DSM, 2867 "DSM in: evt:%d ste:%d did:x%x", 2868 evt, cur_state, ndlp->nlp_DID); 2869 2870 func = lpfc_disc_action[(cur_state * NLP_EVT_MAX_EVENT) + evt]; 2871 rc = (func) (vport, ndlp, arg, evt); 2872 2873 /* DSM out state <rc> on NPort <nlp_DID> */ 2874 if (got_ndlp) { 2875 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, 2876 "0212 DSM out state %d on NPort x%x Data: x%x\n", 2877 rc, ndlp->nlp_DID, ndlp->nlp_flag); 2878 2879 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_DSM, 2880 "DSM out: ste:%d did:x%x flg:x%x", 2881 rc, ndlp->nlp_DID, ndlp->nlp_flag); 2882 /* Decrement the ndlp reference count held for this function */ 2883 lpfc_nlp_put(ndlp); 2884 } else { 2885 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, 2886 "0213 DSM out state %d on NPort free\n", rc); 2887 2888 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_DSM, 2889 "DSM out: ste:%d did:x%x flg:x%x", 2890 rc, 0, 0); 2891 } 2892 2893 return rc; 2894 } 2895