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