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