1 /******************************************************************* 2 * This file is part of the Emulex Linux Device Driver for * 3 * Fibre Channel Host Bus Adapters. * 4 * Copyright (C) 2017-2019 Broadcom. All Rights Reserved. The term * 5 * “Broadcom” refers to Broadcom Inc. and/or its subsidiaries. * 6 * Copyright (C) 2004-2016 Emulex. All rights reserved. * 7 * EMULEX and SLI are trademarks of Emulex. * 8 * www.broadcom.com * 9 * Portions Copyright (C) 2004-2005 Christoph Hellwig * 10 * * 11 * This program is free software; you can redistribute it and/or * 12 * modify it under the terms of version 2 of the GNU General * 13 * Public License as published by the Free Software Foundation. * 14 * This program is distributed in the hope that it will be useful. * 15 * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND * 16 * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, * 17 * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE * 18 * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD * 19 * TO BE LEGALLY INVALID. See the GNU General Public License for * 20 * more details, a copy of which can be found in the file COPYING * 21 * included with this package. * 22 *******************************************************************/ 23 /* See Fibre Channel protocol T11 FC-LS for details */ 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 <uapi/scsi/fc/fc_fs.h> 34 #include <uapi/scsi/fc/fc_els.h> 35 36 #include "lpfc_hw4.h" 37 #include "lpfc_hw.h" 38 #include "lpfc_sli.h" 39 #include "lpfc_sli4.h" 40 #include "lpfc_nl.h" 41 #include "lpfc_disc.h" 42 #include "lpfc_scsi.h" 43 #include "lpfc.h" 44 #include "lpfc_logmsg.h" 45 #include "lpfc_crtn.h" 46 #include "lpfc_vport.h" 47 #include "lpfc_debugfs.h" 48 49 static int lpfc_els_retry(struct lpfc_hba *, struct lpfc_iocbq *, 50 struct lpfc_iocbq *); 51 static void lpfc_cmpl_fabric_iocb(struct lpfc_hba *, struct lpfc_iocbq *, 52 struct lpfc_iocbq *); 53 static void lpfc_fabric_abort_vport(struct lpfc_vport *vport); 54 static int lpfc_issue_els_fdisc(struct lpfc_vport *vport, 55 struct lpfc_nodelist *ndlp, uint8_t retry); 56 static int lpfc_issue_fabric_iocb(struct lpfc_hba *phba, 57 struct lpfc_iocbq *iocb); 58 59 static int lpfc_max_els_tries = 3; 60 61 /** 62 * lpfc_els_chk_latt - Check host link attention event for a vport 63 * @vport: pointer to a host virtual N_Port data structure. 64 * 65 * This routine checks whether there is an outstanding host link 66 * attention event during the discovery process with the @vport. It is done 67 * by reading the HBA's Host Attention (HA) register. If there is any host 68 * link attention events during this @vport's discovery process, the @vport 69 * shall be marked as FC_ABORT_DISCOVERY, a host link attention clear shall 70 * be issued if the link state is not already in host link cleared state, 71 * and a return code shall indicate whether the host link attention event 72 * had happened. 73 * 74 * Note that, if either the host link is in state LPFC_LINK_DOWN or @vport 75 * state in LPFC_VPORT_READY, the request for checking host link attention 76 * event will be ignored and a return code shall indicate no host link 77 * attention event had happened. 78 * 79 * Return codes 80 * 0 - no host link attention event happened 81 * 1 - host link attention event happened 82 **/ 83 int 84 lpfc_els_chk_latt(struct lpfc_vport *vport) 85 { 86 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 87 struct lpfc_hba *phba = vport->phba; 88 uint32_t ha_copy; 89 90 if (vport->port_state >= LPFC_VPORT_READY || 91 phba->link_state == LPFC_LINK_DOWN || 92 phba->sli_rev > LPFC_SLI_REV3) 93 return 0; 94 95 /* Read the HBA Host Attention Register */ 96 if (lpfc_readl(phba->HAregaddr, &ha_copy)) 97 return 1; 98 99 if (!(ha_copy & HA_LATT)) 100 return 0; 101 102 /* Pending Link Event during Discovery */ 103 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY, 104 "0237 Pending Link Event during " 105 "Discovery: State x%x\n", 106 phba->pport->port_state); 107 108 /* CLEAR_LA should re-enable link attention events and 109 * we should then immediately take a LATT event. The 110 * LATT processing should call lpfc_linkdown() which 111 * will cleanup any left over in-progress discovery 112 * events. 113 */ 114 spin_lock_irq(shost->host_lock); 115 vport->fc_flag |= FC_ABORT_DISCOVERY; 116 spin_unlock_irq(shost->host_lock); 117 118 if (phba->link_state != LPFC_CLEAR_LA) 119 lpfc_issue_clear_la(phba, vport); 120 121 return 1; 122 } 123 124 /** 125 * lpfc_prep_els_iocb - Allocate and prepare a lpfc iocb data structure 126 * @vport: pointer to a host virtual N_Port data structure. 127 * @expectRsp: flag indicating whether response is expected. 128 * @cmdSize: size of the ELS command. 129 * @retry: number of retries to the command IOCB when it fails. 130 * @ndlp: pointer to a node-list data structure. 131 * @did: destination identifier. 132 * @elscmd: the ELS command code. 133 * 134 * This routine is used for allocating a lpfc-IOCB data structure from 135 * the driver lpfc-IOCB free-list and prepare the IOCB with the parameters 136 * passed into the routine for discovery state machine to issue an Extended 137 * Link Service (ELS) commands. It is a generic lpfc-IOCB allocation 138 * and preparation routine that is used by all the discovery state machine 139 * routines and the ELS command-specific fields will be later set up by 140 * the individual discovery machine routines after calling this routine 141 * allocating and preparing a generic IOCB data structure. It fills in the 142 * Buffer Descriptor Entries (BDEs), allocates buffers for both command 143 * payload and response payload (if expected). The reference count on the 144 * ndlp is incremented by 1 and the reference to the ndlp is put into 145 * context1 of the IOCB data structure for this IOCB to hold the ndlp 146 * reference for the command's callback function to access later. 147 * 148 * Return code 149 * Pointer to the newly allocated/prepared els iocb data structure 150 * NULL - when els iocb data structure allocation/preparation failed 151 **/ 152 struct lpfc_iocbq * 153 lpfc_prep_els_iocb(struct lpfc_vport *vport, uint8_t expectRsp, 154 uint16_t cmdSize, uint8_t retry, 155 struct lpfc_nodelist *ndlp, uint32_t did, 156 uint32_t elscmd) 157 { 158 struct lpfc_hba *phba = vport->phba; 159 struct lpfc_iocbq *elsiocb; 160 struct lpfc_dmabuf *pcmd, *prsp, *pbuflist; 161 struct ulp_bde64 *bpl; 162 IOCB_t *icmd; 163 164 165 if (!lpfc_is_link_up(phba)) 166 return NULL; 167 168 /* Allocate buffer for command iocb */ 169 elsiocb = lpfc_sli_get_iocbq(phba); 170 171 if (elsiocb == NULL) 172 return NULL; 173 174 /* 175 * If this command is for fabric controller and HBA running 176 * in FIP mode send FLOGI, FDISC and LOGO as FIP frames. 177 */ 178 if ((did == Fabric_DID) && 179 (phba->hba_flag & HBA_FIP_SUPPORT) && 180 ((elscmd == ELS_CMD_FLOGI) || 181 (elscmd == ELS_CMD_FDISC) || 182 (elscmd == ELS_CMD_LOGO))) 183 switch (elscmd) { 184 case ELS_CMD_FLOGI: 185 elsiocb->iocb_flag |= 186 ((LPFC_ELS_ID_FLOGI << LPFC_FIP_ELS_ID_SHIFT) 187 & LPFC_FIP_ELS_ID_MASK); 188 break; 189 case ELS_CMD_FDISC: 190 elsiocb->iocb_flag |= 191 ((LPFC_ELS_ID_FDISC << LPFC_FIP_ELS_ID_SHIFT) 192 & LPFC_FIP_ELS_ID_MASK); 193 break; 194 case ELS_CMD_LOGO: 195 elsiocb->iocb_flag |= 196 ((LPFC_ELS_ID_LOGO << LPFC_FIP_ELS_ID_SHIFT) 197 & LPFC_FIP_ELS_ID_MASK); 198 break; 199 } 200 else 201 elsiocb->iocb_flag &= ~LPFC_FIP_ELS_ID_MASK; 202 203 icmd = &elsiocb->iocb; 204 205 /* fill in BDEs for command */ 206 /* Allocate buffer for command payload */ 207 pcmd = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL); 208 if (pcmd) 209 pcmd->virt = lpfc_mbuf_alloc(phba, MEM_PRI, &pcmd->phys); 210 if (!pcmd || !pcmd->virt) 211 goto els_iocb_free_pcmb_exit; 212 213 INIT_LIST_HEAD(&pcmd->list); 214 215 /* Allocate buffer for response payload */ 216 if (expectRsp) { 217 prsp = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL); 218 if (prsp) 219 prsp->virt = lpfc_mbuf_alloc(phba, MEM_PRI, 220 &prsp->phys); 221 if (!prsp || !prsp->virt) 222 goto els_iocb_free_prsp_exit; 223 INIT_LIST_HEAD(&prsp->list); 224 } else 225 prsp = NULL; 226 227 /* Allocate buffer for Buffer ptr list */ 228 pbuflist = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL); 229 if (pbuflist) 230 pbuflist->virt = lpfc_mbuf_alloc(phba, MEM_PRI, 231 &pbuflist->phys); 232 if (!pbuflist || !pbuflist->virt) 233 goto els_iocb_free_pbuf_exit; 234 235 INIT_LIST_HEAD(&pbuflist->list); 236 237 if (expectRsp) { 238 icmd->un.elsreq64.bdl.addrHigh = putPaddrHigh(pbuflist->phys); 239 icmd->un.elsreq64.bdl.addrLow = putPaddrLow(pbuflist->phys); 240 icmd->un.elsreq64.bdl.bdeFlags = BUFF_TYPE_BLP_64; 241 icmd->un.elsreq64.bdl.bdeSize = (2 * sizeof(struct ulp_bde64)); 242 243 icmd->un.elsreq64.remoteID = did; /* DID */ 244 icmd->ulpCommand = CMD_ELS_REQUEST64_CR; 245 if (elscmd == ELS_CMD_FLOGI) 246 icmd->ulpTimeout = FF_DEF_RATOV * 2; 247 else if (elscmd == ELS_CMD_LOGO) 248 icmd->ulpTimeout = phba->fc_ratov; 249 else 250 icmd->ulpTimeout = phba->fc_ratov * 2; 251 } else { 252 icmd->un.xseq64.bdl.addrHigh = putPaddrHigh(pbuflist->phys); 253 icmd->un.xseq64.bdl.addrLow = putPaddrLow(pbuflist->phys); 254 icmd->un.xseq64.bdl.bdeFlags = BUFF_TYPE_BLP_64; 255 icmd->un.xseq64.bdl.bdeSize = sizeof(struct ulp_bde64); 256 icmd->un.xseq64.xmit_els_remoteID = did; /* DID */ 257 icmd->ulpCommand = CMD_XMIT_ELS_RSP64_CX; 258 } 259 icmd->ulpBdeCount = 1; 260 icmd->ulpLe = 1; 261 icmd->ulpClass = CLASS3; 262 263 /* 264 * If we have NPIV enabled, we want to send ELS traffic by VPI. 265 * For SLI4, since the driver controls VPIs we also want to include 266 * all ELS pt2pt protocol traffic as well. 267 */ 268 if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) || 269 ((phba->sli_rev == LPFC_SLI_REV4) && 270 (vport->fc_flag & FC_PT2PT))) { 271 272 if (expectRsp) { 273 icmd->un.elsreq64.myID = vport->fc_myDID; 274 275 /* For ELS_REQUEST64_CR, use the VPI by default */ 276 icmd->ulpContext = phba->vpi_ids[vport->vpi]; 277 } 278 279 icmd->ulpCt_h = 0; 280 /* The CT field must be 0=INVALID_RPI for the ECHO cmd */ 281 if (elscmd == ELS_CMD_ECHO) 282 icmd->ulpCt_l = 0; /* context = invalid RPI */ 283 else 284 icmd->ulpCt_l = 1; /* context = VPI */ 285 } 286 287 bpl = (struct ulp_bde64 *) pbuflist->virt; 288 bpl->addrLow = le32_to_cpu(putPaddrLow(pcmd->phys)); 289 bpl->addrHigh = le32_to_cpu(putPaddrHigh(pcmd->phys)); 290 bpl->tus.f.bdeSize = cmdSize; 291 bpl->tus.f.bdeFlags = 0; 292 bpl->tus.w = le32_to_cpu(bpl->tus.w); 293 294 if (expectRsp) { 295 bpl++; 296 bpl->addrLow = le32_to_cpu(putPaddrLow(prsp->phys)); 297 bpl->addrHigh = le32_to_cpu(putPaddrHigh(prsp->phys)); 298 bpl->tus.f.bdeSize = FCELSSIZE; 299 bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64; 300 bpl->tus.w = le32_to_cpu(bpl->tus.w); 301 } 302 303 /* prevent preparing iocb with NULL ndlp reference */ 304 elsiocb->context1 = lpfc_nlp_get(ndlp); 305 if (!elsiocb->context1) 306 goto els_iocb_free_pbuf_exit; 307 elsiocb->context2 = pcmd; 308 elsiocb->context3 = pbuflist; 309 elsiocb->retry = retry; 310 elsiocb->vport = vport; 311 elsiocb->drvrTimeout = (phba->fc_ratov << 1) + LPFC_DRVR_TIMEOUT; 312 313 if (prsp) { 314 list_add(&prsp->list, &pcmd->list); 315 } 316 if (expectRsp) { 317 /* Xmit ELS command <elsCmd> to remote NPORT <did> */ 318 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, 319 "0116 Xmit ELS command x%x to remote " 320 "NPORT x%x I/O tag: x%x, port state:x%x " 321 "rpi x%x fc_flag:x%x\n", 322 elscmd, did, elsiocb->iotag, 323 vport->port_state, ndlp->nlp_rpi, 324 vport->fc_flag); 325 } else { 326 /* Xmit ELS response <elsCmd> to remote NPORT <did> */ 327 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, 328 "0117 Xmit ELS response x%x to remote " 329 "NPORT x%x I/O tag: x%x, size: x%x " 330 "port_state x%x rpi x%x fc_flag x%x\n", 331 elscmd, ndlp->nlp_DID, elsiocb->iotag, 332 cmdSize, vport->port_state, 333 ndlp->nlp_rpi, vport->fc_flag); 334 } 335 return elsiocb; 336 337 els_iocb_free_pbuf_exit: 338 if (expectRsp) 339 lpfc_mbuf_free(phba, prsp->virt, prsp->phys); 340 kfree(pbuflist); 341 342 els_iocb_free_prsp_exit: 343 lpfc_mbuf_free(phba, pcmd->virt, pcmd->phys); 344 kfree(prsp); 345 346 els_iocb_free_pcmb_exit: 347 kfree(pcmd); 348 lpfc_sli_release_iocbq(phba, elsiocb); 349 return NULL; 350 } 351 352 /** 353 * lpfc_issue_fabric_reglogin - Issue fabric registration login for a vport 354 * @vport: pointer to a host virtual N_Port data structure. 355 * 356 * This routine issues a fabric registration login for a @vport. An 357 * active ndlp node with Fabric_DID must already exist for this @vport. 358 * The routine invokes two mailbox commands to carry out fabric registration 359 * login through the HBA firmware: the first mailbox command requests the 360 * HBA to perform link configuration for the @vport; and the second mailbox 361 * command requests the HBA to perform the actual fabric registration login 362 * with the @vport. 363 * 364 * Return code 365 * 0 - successfully issued fabric registration login for @vport 366 * -ENXIO -- failed to issue fabric registration login for @vport 367 **/ 368 int 369 lpfc_issue_fabric_reglogin(struct lpfc_vport *vport) 370 { 371 struct lpfc_hba *phba = vport->phba; 372 LPFC_MBOXQ_t *mbox; 373 struct lpfc_dmabuf *mp; 374 struct lpfc_nodelist *ndlp; 375 struct serv_parm *sp; 376 int rc; 377 int err = 0; 378 379 sp = &phba->fc_fabparam; 380 ndlp = lpfc_findnode_did(vport, Fabric_DID); 381 if (!ndlp || !NLP_CHK_NODE_ACT(ndlp)) { 382 err = 1; 383 goto fail; 384 } 385 386 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 387 if (!mbox) { 388 err = 2; 389 goto fail; 390 } 391 392 vport->port_state = LPFC_FABRIC_CFG_LINK; 393 lpfc_config_link(phba, mbox); 394 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl; 395 mbox->vport = vport; 396 397 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT); 398 if (rc == MBX_NOT_FINISHED) { 399 err = 3; 400 goto fail_free_mbox; 401 } 402 403 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 404 if (!mbox) { 405 err = 4; 406 goto fail; 407 } 408 rc = lpfc_reg_rpi(phba, vport->vpi, Fabric_DID, (uint8_t *)sp, mbox, 409 ndlp->nlp_rpi); 410 if (rc) { 411 err = 5; 412 goto fail_free_mbox; 413 } 414 415 mbox->mbox_cmpl = lpfc_mbx_cmpl_fabric_reg_login; 416 mbox->vport = vport; 417 /* increment the reference count on ndlp to hold reference 418 * for the callback routine. 419 */ 420 mbox->ctx_ndlp = lpfc_nlp_get(ndlp); 421 422 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT); 423 if (rc == MBX_NOT_FINISHED) { 424 err = 6; 425 goto fail_issue_reg_login; 426 } 427 428 return 0; 429 430 fail_issue_reg_login: 431 /* decrement the reference count on ndlp just incremented 432 * for the failed mbox command. 433 */ 434 lpfc_nlp_put(ndlp); 435 mp = (struct lpfc_dmabuf *)mbox->ctx_buf; 436 lpfc_mbuf_free(phba, mp->virt, mp->phys); 437 kfree(mp); 438 fail_free_mbox: 439 mempool_free(mbox, phba->mbox_mem_pool); 440 441 fail: 442 lpfc_vport_set_state(vport, FC_VPORT_FAILED); 443 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS, 444 "0249 Cannot issue Register Fabric login: Err %d\n", err); 445 return -ENXIO; 446 } 447 448 /** 449 * lpfc_issue_reg_vfi - Register VFI for this vport's fabric login 450 * @vport: pointer to a host virtual N_Port data structure. 451 * 452 * This routine issues a REG_VFI mailbox for the vfi, vpi, fcfi triplet for 453 * the @vport. This mailbox command is necessary for SLI4 port only. 454 * 455 * Return code 456 * 0 - successfully issued REG_VFI for @vport 457 * A failure code otherwise. 458 **/ 459 int 460 lpfc_issue_reg_vfi(struct lpfc_vport *vport) 461 { 462 struct lpfc_hba *phba = vport->phba; 463 LPFC_MBOXQ_t *mboxq = NULL; 464 struct lpfc_nodelist *ndlp; 465 struct lpfc_dmabuf *dmabuf = NULL; 466 int rc = 0; 467 468 /* move forward in case of SLI4 FC port loopback test and pt2pt mode */ 469 if ((phba->sli_rev == LPFC_SLI_REV4) && 470 !(phba->link_flag & LS_LOOPBACK_MODE) && 471 !(vport->fc_flag & FC_PT2PT)) { 472 ndlp = lpfc_findnode_did(vport, Fabric_DID); 473 if (!ndlp || !NLP_CHK_NODE_ACT(ndlp)) { 474 rc = -ENODEV; 475 goto fail; 476 } 477 } 478 479 mboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 480 if (!mboxq) { 481 rc = -ENOMEM; 482 goto fail; 483 } 484 485 /* Supply CSP's only if we are fabric connect or pt-to-pt connect */ 486 if ((vport->fc_flag & FC_FABRIC) || (vport->fc_flag & FC_PT2PT)) { 487 dmabuf = kzalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL); 488 if (!dmabuf) { 489 rc = -ENOMEM; 490 goto fail; 491 } 492 dmabuf->virt = lpfc_mbuf_alloc(phba, MEM_PRI, &dmabuf->phys); 493 if (!dmabuf->virt) { 494 rc = -ENOMEM; 495 goto fail; 496 } 497 memcpy(dmabuf->virt, &phba->fc_fabparam, 498 sizeof(struct serv_parm)); 499 } 500 501 vport->port_state = LPFC_FABRIC_CFG_LINK; 502 if (dmabuf) 503 lpfc_reg_vfi(mboxq, vport, dmabuf->phys); 504 else 505 lpfc_reg_vfi(mboxq, vport, 0); 506 507 mboxq->mbox_cmpl = lpfc_mbx_cmpl_reg_vfi; 508 mboxq->vport = vport; 509 mboxq->ctx_buf = dmabuf; 510 rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_NOWAIT); 511 if (rc == MBX_NOT_FINISHED) { 512 rc = -ENXIO; 513 goto fail; 514 } 515 return 0; 516 517 fail: 518 if (mboxq) 519 mempool_free(mboxq, phba->mbox_mem_pool); 520 if (dmabuf) { 521 if (dmabuf->virt) 522 lpfc_mbuf_free(phba, dmabuf->virt, dmabuf->phys); 523 kfree(dmabuf); 524 } 525 526 lpfc_vport_set_state(vport, FC_VPORT_FAILED); 527 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS, 528 "0289 Issue Register VFI failed: Err %d\n", rc); 529 return rc; 530 } 531 532 /** 533 * lpfc_issue_unreg_vfi - Unregister VFI for this vport's fabric login 534 * @vport: pointer to a host virtual N_Port data structure. 535 * 536 * This routine issues a UNREG_VFI mailbox with the vfi, vpi, fcfi triplet for 537 * the @vport. This mailbox command is necessary for SLI4 port only. 538 * 539 * Return code 540 * 0 - successfully issued REG_VFI for @vport 541 * A failure code otherwise. 542 **/ 543 int 544 lpfc_issue_unreg_vfi(struct lpfc_vport *vport) 545 { 546 struct lpfc_hba *phba = vport->phba; 547 struct Scsi_Host *shost; 548 LPFC_MBOXQ_t *mboxq; 549 int rc; 550 551 mboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 552 if (!mboxq) { 553 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY|LOG_MBOX, 554 "2556 UNREG_VFI mbox allocation failed" 555 "HBA state x%x\n", phba->pport->port_state); 556 return -ENOMEM; 557 } 558 559 lpfc_unreg_vfi(mboxq, vport); 560 mboxq->vport = vport; 561 mboxq->mbox_cmpl = lpfc_unregister_vfi_cmpl; 562 563 rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_NOWAIT); 564 if (rc == MBX_NOT_FINISHED) { 565 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY|LOG_MBOX, 566 "2557 UNREG_VFI issue mbox failed rc x%x " 567 "HBA state x%x\n", 568 rc, phba->pport->port_state); 569 mempool_free(mboxq, phba->mbox_mem_pool); 570 return -EIO; 571 } 572 573 shost = lpfc_shost_from_vport(vport); 574 spin_lock_irq(shost->host_lock); 575 vport->fc_flag &= ~FC_VFI_REGISTERED; 576 spin_unlock_irq(shost->host_lock); 577 return 0; 578 } 579 580 /** 581 * lpfc_check_clean_addr_bit - Check whether assigned FCID is clean. 582 * @vport: pointer to a host virtual N_Port data structure. 583 * @sp: pointer to service parameter data structure. 584 * 585 * This routine is called from FLOGI/FDISC completion handler functions. 586 * lpfc_check_clean_addr_bit return 1 when FCID/Fabric portname/ Fabric 587 * node nodename is changed in the completion service parameter else return 588 * 0. This function also set flag in the vport data structure to delay 589 * NP_Port discovery after the FLOGI/FDISC completion if Clean address bit 590 * in FLOGI/FDISC response is cleared and FCID/Fabric portname/ Fabric 591 * node nodename is changed in the completion service parameter. 592 * 593 * Return code 594 * 0 - FCID and Fabric Nodename and Fabric portname is not changed. 595 * 1 - FCID or Fabric Nodename or Fabric portname is changed. 596 * 597 **/ 598 static uint8_t 599 lpfc_check_clean_addr_bit(struct lpfc_vport *vport, 600 struct serv_parm *sp) 601 { 602 struct lpfc_hba *phba = vport->phba; 603 uint8_t fabric_param_changed = 0; 604 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 605 606 if ((vport->fc_prevDID != vport->fc_myDID) || 607 memcmp(&vport->fabric_portname, &sp->portName, 608 sizeof(struct lpfc_name)) || 609 memcmp(&vport->fabric_nodename, &sp->nodeName, 610 sizeof(struct lpfc_name)) || 611 (vport->vport_flag & FAWWPN_PARAM_CHG)) { 612 fabric_param_changed = 1; 613 vport->vport_flag &= ~FAWWPN_PARAM_CHG; 614 } 615 /* 616 * Word 1 Bit 31 in common service parameter is overloaded. 617 * Word 1 Bit 31 in FLOGI request is multiple NPort request 618 * Word 1 Bit 31 in FLOGI response is clean address bit 619 * 620 * If fabric parameter is changed and clean address bit is 621 * cleared delay nport discovery if 622 * - vport->fc_prevDID != 0 (not initial discovery) OR 623 * - lpfc_delay_discovery module parameter is set. 624 */ 625 if (fabric_param_changed && !sp->cmn.clean_address_bit && 626 (vport->fc_prevDID || phba->cfg_delay_discovery)) { 627 spin_lock_irq(shost->host_lock); 628 vport->fc_flag |= FC_DISC_DELAYED; 629 spin_unlock_irq(shost->host_lock); 630 } 631 632 return fabric_param_changed; 633 } 634 635 636 /** 637 * lpfc_cmpl_els_flogi_fabric - Completion function for flogi to a fabric port 638 * @vport: pointer to a host virtual N_Port data structure. 639 * @ndlp: pointer to a node-list data structure. 640 * @sp: pointer to service parameter data structure. 641 * @irsp: pointer to the IOCB within the lpfc response IOCB. 642 * 643 * This routine is invoked by the lpfc_cmpl_els_flogi() completion callback 644 * function to handle the completion of a Fabric Login (FLOGI) into a fabric 645 * port in a fabric topology. It properly sets up the parameters to the @ndlp 646 * from the IOCB response. It also check the newly assigned N_Port ID to the 647 * @vport against the previously assigned N_Port ID. If it is different from 648 * the previously assigned Destination ID (DID), the lpfc_unreg_rpi() routine 649 * is invoked on all the remaining nodes with the @vport to unregister the 650 * Remote Port Indicators (RPIs). Finally, the lpfc_issue_fabric_reglogin() 651 * is invoked to register login to the fabric. 652 * 653 * Return code 654 * 0 - Success (currently, always return 0) 655 **/ 656 static int 657 lpfc_cmpl_els_flogi_fabric(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 658 struct serv_parm *sp, IOCB_t *irsp) 659 { 660 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 661 struct lpfc_hba *phba = vport->phba; 662 struct lpfc_nodelist *np; 663 struct lpfc_nodelist *next_np; 664 uint8_t fabric_param_changed; 665 666 spin_lock_irq(shost->host_lock); 667 vport->fc_flag |= FC_FABRIC; 668 spin_unlock_irq(shost->host_lock); 669 670 phba->fc_edtov = be32_to_cpu(sp->cmn.e_d_tov); 671 if (sp->cmn.edtovResolution) /* E_D_TOV ticks are in nanoseconds */ 672 phba->fc_edtov = (phba->fc_edtov + 999999) / 1000000; 673 674 phba->fc_edtovResol = sp->cmn.edtovResolution; 675 phba->fc_ratov = (be32_to_cpu(sp->cmn.w2.r_a_tov) + 999) / 1000; 676 677 if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) { 678 spin_lock_irq(shost->host_lock); 679 vport->fc_flag |= FC_PUBLIC_LOOP; 680 spin_unlock_irq(shost->host_lock); 681 } 682 683 vport->fc_myDID = irsp->un.ulpWord[4] & Mask_DID; 684 memcpy(&ndlp->nlp_portname, &sp->portName, sizeof(struct lpfc_name)); 685 memcpy(&ndlp->nlp_nodename, &sp->nodeName, sizeof(struct lpfc_name)); 686 ndlp->nlp_class_sup = 0; 687 if (sp->cls1.classValid) 688 ndlp->nlp_class_sup |= FC_COS_CLASS1; 689 if (sp->cls2.classValid) 690 ndlp->nlp_class_sup |= FC_COS_CLASS2; 691 if (sp->cls3.classValid) 692 ndlp->nlp_class_sup |= FC_COS_CLASS3; 693 if (sp->cls4.classValid) 694 ndlp->nlp_class_sup |= FC_COS_CLASS4; 695 ndlp->nlp_maxframe = ((sp->cmn.bbRcvSizeMsb & 0x0F) << 8) | 696 sp->cmn.bbRcvSizeLsb; 697 698 fabric_param_changed = lpfc_check_clean_addr_bit(vport, sp); 699 if (fabric_param_changed) { 700 /* Reset FDMI attribute masks based on config parameter */ 701 if (phba->cfg_enable_SmartSAN || 702 (phba->cfg_fdmi_on == LPFC_FDMI_SUPPORT)) { 703 /* Setup appropriate attribute masks */ 704 vport->fdmi_hba_mask = LPFC_FDMI2_HBA_ATTR; 705 if (phba->cfg_enable_SmartSAN) 706 vport->fdmi_port_mask = LPFC_FDMI2_SMART_ATTR; 707 else 708 vport->fdmi_port_mask = LPFC_FDMI2_PORT_ATTR; 709 } else { 710 vport->fdmi_hba_mask = 0; 711 vport->fdmi_port_mask = 0; 712 } 713 714 } 715 memcpy(&vport->fabric_portname, &sp->portName, 716 sizeof(struct lpfc_name)); 717 memcpy(&vport->fabric_nodename, &sp->nodeName, 718 sizeof(struct lpfc_name)); 719 memcpy(&phba->fc_fabparam, sp, sizeof(struct serv_parm)); 720 721 if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) { 722 if (sp->cmn.response_multiple_NPort) { 723 lpfc_printf_vlog(vport, KERN_WARNING, 724 LOG_ELS | LOG_VPORT, 725 "1816 FLOGI NPIV supported, " 726 "response data 0x%x\n", 727 sp->cmn.response_multiple_NPort); 728 spin_lock_irq(&phba->hbalock); 729 phba->link_flag |= LS_NPIV_FAB_SUPPORTED; 730 spin_unlock_irq(&phba->hbalock); 731 } else { 732 /* Because we asked f/w for NPIV it still expects us 733 to call reg_vnpid atleast for the physcial host */ 734 lpfc_printf_vlog(vport, KERN_WARNING, 735 LOG_ELS | LOG_VPORT, 736 "1817 Fabric does not support NPIV " 737 "- configuring single port mode.\n"); 738 spin_lock_irq(&phba->hbalock); 739 phba->link_flag &= ~LS_NPIV_FAB_SUPPORTED; 740 spin_unlock_irq(&phba->hbalock); 741 } 742 } 743 744 /* 745 * For FC we need to do some special processing because of the SLI 746 * Port's default settings of the Common Service Parameters. 747 */ 748 if ((phba->sli_rev == LPFC_SLI_REV4) && 749 (phba->sli4_hba.lnk_info.lnk_tp == LPFC_LNK_TYPE_FC)) { 750 /* If physical FC port changed, unreg VFI and ALL VPIs / RPIs */ 751 if (fabric_param_changed) 752 lpfc_unregister_fcf_prep(phba); 753 754 /* This should just update the VFI CSPs*/ 755 if (vport->fc_flag & FC_VFI_REGISTERED) 756 lpfc_issue_reg_vfi(vport); 757 } 758 759 if (fabric_param_changed && 760 !(vport->fc_flag & FC_VPORT_NEEDS_REG_VPI)) { 761 762 /* If our NportID changed, we need to ensure all 763 * remaining NPORTs get unreg_login'ed. 764 */ 765 list_for_each_entry_safe(np, next_np, 766 &vport->fc_nodes, nlp_listp) { 767 if (!NLP_CHK_NODE_ACT(np)) 768 continue; 769 if ((np->nlp_state != NLP_STE_NPR_NODE) || 770 !(np->nlp_flag & NLP_NPR_ADISC)) 771 continue; 772 spin_lock_irq(shost->host_lock); 773 np->nlp_flag &= ~NLP_NPR_ADISC; 774 spin_unlock_irq(shost->host_lock); 775 lpfc_unreg_rpi(vport, np); 776 } 777 lpfc_cleanup_pending_mbox(vport); 778 779 if (phba->sli_rev == LPFC_SLI_REV4) { 780 lpfc_sli4_unreg_all_rpis(vport); 781 lpfc_mbx_unreg_vpi(vport); 782 spin_lock_irq(shost->host_lock); 783 vport->fc_flag |= FC_VPORT_NEEDS_INIT_VPI; 784 spin_unlock_irq(shost->host_lock); 785 } 786 787 /* 788 * For SLI3 and SLI4, the VPI needs to be reregistered in 789 * response to this fabric parameter change event. 790 */ 791 spin_lock_irq(shost->host_lock); 792 vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI; 793 spin_unlock_irq(shost->host_lock); 794 } else if ((phba->sli_rev == LPFC_SLI_REV4) && 795 !(vport->fc_flag & FC_VPORT_NEEDS_REG_VPI)) { 796 /* 797 * Driver needs to re-reg VPI in order for f/w 798 * to update the MAC address. 799 */ 800 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE); 801 lpfc_register_new_vport(phba, vport, ndlp); 802 return 0; 803 } 804 805 if (phba->sli_rev < LPFC_SLI_REV4) { 806 lpfc_nlp_set_state(vport, ndlp, NLP_STE_REG_LOGIN_ISSUE); 807 if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED && 808 vport->fc_flag & FC_VPORT_NEEDS_REG_VPI) 809 lpfc_register_new_vport(phba, vport, ndlp); 810 else 811 lpfc_issue_fabric_reglogin(vport); 812 } else { 813 ndlp->nlp_type |= NLP_FABRIC; 814 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE); 815 if ((!(vport->fc_flag & FC_VPORT_NEEDS_REG_VPI)) && 816 (vport->vpi_state & LPFC_VPI_REGISTERED)) { 817 lpfc_start_fdiscs(phba); 818 lpfc_do_scr_ns_plogi(phba, vport); 819 } else if (vport->fc_flag & FC_VFI_REGISTERED) 820 lpfc_issue_init_vpi(vport); 821 else { 822 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, 823 "3135 Need register VFI: (x%x/%x)\n", 824 vport->fc_prevDID, vport->fc_myDID); 825 lpfc_issue_reg_vfi(vport); 826 } 827 } 828 return 0; 829 } 830 831 /** 832 * lpfc_cmpl_els_flogi_nport - Completion function for flogi to an N_Port 833 * @vport: pointer to a host virtual N_Port data structure. 834 * @ndlp: pointer to a node-list data structure. 835 * @sp: pointer to service parameter data structure. 836 * 837 * This routine is invoked by the lpfc_cmpl_els_flogi() completion callback 838 * function to handle the completion of a Fabric Login (FLOGI) into an N_Port 839 * in a point-to-point topology. First, the @vport's N_Port Name is compared 840 * with the received N_Port Name: if the @vport's N_Port Name is greater than 841 * the received N_Port Name lexicographically, this node shall assign local 842 * N_Port ID (PT2PT_LocalID: 1) and remote N_Port ID (PT2PT_RemoteID: 2) and 843 * will send out Port Login (PLOGI) with the N_Port IDs assigned. Otherwise, 844 * this node shall just wait for the remote node to issue PLOGI and assign 845 * N_Port IDs. 846 * 847 * Return code 848 * 0 - Success 849 * -ENXIO - Fail 850 **/ 851 static int 852 lpfc_cmpl_els_flogi_nport(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 853 struct serv_parm *sp) 854 { 855 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 856 struct lpfc_hba *phba = vport->phba; 857 LPFC_MBOXQ_t *mbox; 858 int rc; 859 860 spin_lock_irq(shost->host_lock); 861 vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP); 862 vport->fc_flag |= FC_PT2PT; 863 spin_unlock_irq(shost->host_lock); 864 865 /* If we are pt2pt with another NPort, force NPIV off! */ 866 phba->sli3_options &= ~LPFC_SLI3_NPIV_ENABLED; 867 868 /* If physical FC port changed, unreg VFI and ALL VPIs / RPIs */ 869 if ((phba->sli_rev == LPFC_SLI_REV4) && phba->fc_topology_changed) { 870 lpfc_unregister_fcf_prep(phba); 871 872 spin_lock_irq(shost->host_lock); 873 vport->fc_flag &= ~FC_VFI_REGISTERED; 874 spin_unlock_irq(shost->host_lock); 875 phba->fc_topology_changed = 0; 876 } 877 878 rc = memcmp(&vport->fc_portname, &sp->portName, 879 sizeof(vport->fc_portname)); 880 881 if (rc >= 0) { 882 /* This side will initiate the PLOGI */ 883 spin_lock_irq(shost->host_lock); 884 vport->fc_flag |= FC_PT2PT_PLOGI; 885 spin_unlock_irq(shost->host_lock); 886 887 /* 888 * N_Port ID cannot be 0, set our Id to LocalID 889 * the other side will be RemoteID. 890 */ 891 892 /* not equal */ 893 if (rc) 894 vport->fc_myDID = PT2PT_LocalID; 895 896 /* Decrement ndlp reference count indicating that ndlp can be 897 * safely released when other references to it are done. 898 */ 899 lpfc_nlp_put(ndlp); 900 901 ndlp = lpfc_findnode_did(vport, PT2PT_RemoteID); 902 if (!ndlp) { 903 /* 904 * Cannot find existing Fabric ndlp, so allocate a 905 * new one 906 */ 907 ndlp = lpfc_nlp_init(vport, PT2PT_RemoteID); 908 if (!ndlp) 909 goto fail; 910 } else if (!NLP_CHK_NODE_ACT(ndlp)) { 911 ndlp = lpfc_enable_node(vport, ndlp, 912 NLP_STE_UNUSED_NODE); 913 if(!ndlp) 914 goto fail; 915 } 916 917 memcpy(&ndlp->nlp_portname, &sp->portName, 918 sizeof(struct lpfc_name)); 919 memcpy(&ndlp->nlp_nodename, &sp->nodeName, 920 sizeof(struct lpfc_name)); 921 /* Set state will put ndlp onto node list if not already done */ 922 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE); 923 spin_lock_irq(shost->host_lock); 924 ndlp->nlp_flag |= NLP_NPR_2B_DISC; 925 spin_unlock_irq(shost->host_lock); 926 927 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 928 if (!mbox) 929 goto fail; 930 931 lpfc_config_link(phba, mbox); 932 933 mbox->mbox_cmpl = lpfc_mbx_cmpl_local_config_link; 934 mbox->vport = vport; 935 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT); 936 if (rc == MBX_NOT_FINISHED) { 937 mempool_free(mbox, phba->mbox_mem_pool); 938 goto fail; 939 } 940 } else { 941 /* This side will wait for the PLOGI, decrement ndlp reference 942 * count indicating that ndlp can be released when other 943 * references to it are done. 944 */ 945 lpfc_nlp_put(ndlp); 946 947 /* Start discovery - this should just do CLEAR_LA */ 948 lpfc_disc_start(vport); 949 } 950 951 return 0; 952 fail: 953 return -ENXIO; 954 } 955 956 /** 957 * lpfc_cmpl_els_flogi - Completion callback function for flogi 958 * @phba: pointer to lpfc hba data structure. 959 * @cmdiocb: pointer to lpfc command iocb data structure. 960 * @rspiocb: pointer to lpfc response iocb data structure. 961 * 962 * This routine is the top-level completion callback function for issuing 963 * a Fabric Login (FLOGI) command. If the response IOCB reported error, 964 * the lpfc_els_retry() routine shall be invoked to retry the FLOGI. If 965 * retry has been made (either immediately or delayed with lpfc_els_retry() 966 * returning 1), the command IOCB will be released and function returned. 967 * If the retry attempt has been given up (possibly reach the maximum 968 * number of retries), one additional decrement of ndlp reference shall be 969 * invoked before going out after releasing the command IOCB. This will 970 * actually release the remote node (Note, lpfc_els_free_iocb() will also 971 * invoke one decrement of ndlp reference count). If no error reported in 972 * the IOCB status, the command Port ID field is used to determine whether 973 * this is a point-to-point topology or a fabric topology: if the Port ID 974 * field is assigned, it is a fabric topology; otherwise, it is a 975 * point-to-point topology. The routine lpfc_cmpl_els_flogi_fabric() or 976 * lpfc_cmpl_els_flogi_nport() shall be invoked accordingly to handle the 977 * specific topology completion conditions. 978 **/ 979 static void 980 lpfc_cmpl_els_flogi(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb, 981 struct lpfc_iocbq *rspiocb) 982 { 983 struct lpfc_vport *vport = cmdiocb->vport; 984 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 985 IOCB_t *irsp = &rspiocb->iocb; 986 struct lpfc_nodelist *ndlp = cmdiocb->context1; 987 struct lpfc_dmabuf *pcmd = cmdiocb->context2, *prsp; 988 struct serv_parm *sp; 989 uint16_t fcf_index; 990 int rc; 991 992 /* Check to see if link went down during discovery */ 993 if (lpfc_els_chk_latt(vport)) { 994 /* One additional decrement on node reference count to 995 * trigger the release of the node 996 */ 997 lpfc_nlp_put(ndlp); 998 goto out; 999 } 1000 1001 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, 1002 "FLOGI cmpl: status:x%x/x%x state:x%x", 1003 irsp->ulpStatus, irsp->un.ulpWord[4], 1004 vport->port_state); 1005 1006 if (irsp->ulpStatus) { 1007 /* 1008 * In case of FIP mode, perform roundrobin FCF failover 1009 * due to new FCF discovery 1010 */ 1011 if ((phba->hba_flag & HBA_FIP_SUPPORT) && 1012 (phba->fcf.fcf_flag & FCF_DISCOVERY)) { 1013 if (phba->link_state < LPFC_LINK_UP) 1014 goto stop_rr_fcf_flogi; 1015 if ((phba->fcoe_cvl_eventtag_attn == 1016 phba->fcoe_cvl_eventtag) && 1017 (irsp->ulpStatus == IOSTAT_LOCAL_REJECT) && 1018 ((irsp->un.ulpWord[4] & IOERR_PARAM_MASK) == 1019 IOERR_SLI_ABORTED)) 1020 goto stop_rr_fcf_flogi; 1021 else 1022 phba->fcoe_cvl_eventtag_attn = 1023 phba->fcoe_cvl_eventtag; 1024 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP | LOG_ELS, 1025 "2611 FLOGI failed on FCF (x%x), " 1026 "status:x%x/x%x, tmo:x%x, perform " 1027 "roundrobin FCF failover\n", 1028 phba->fcf.current_rec.fcf_indx, 1029 irsp->ulpStatus, irsp->un.ulpWord[4], 1030 irsp->ulpTimeout); 1031 lpfc_sli4_set_fcf_flogi_fail(phba, 1032 phba->fcf.current_rec.fcf_indx); 1033 fcf_index = lpfc_sli4_fcf_rr_next_index_get(phba); 1034 rc = lpfc_sli4_fcf_rr_next_proc(vport, fcf_index); 1035 if (rc) 1036 goto out; 1037 } 1038 1039 stop_rr_fcf_flogi: 1040 /* FLOGI failure */ 1041 if (!(irsp->ulpStatus == IOSTAT_LOCAL_REJECT && 1042 ((irsp->un.ulpWord[4] & IOERR_PARAM_MASK) == 1043 IOERR_LOOP_OPEN_FAILURE))) 1044 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS, 1045 "2858 FLOGI failure Status:x%x/x%x " 1046 "TMO:x%x Data x%x x%x\n", 1047 irsp->ulpStatus, irsp->un.ulpWord[4], 1048 irsp->ulpTimeout, phba->hba_flag, 1049 phba->fcf.fcf_flag); 1050 1051 /* Check for retry */ 1052 if (lpfc_els_retry(phba, cmdiocb, rspiocb)) 1053 goto out; 1054 1055 /* If this is not a loop open failure, bail out */ 1056 if (!(irsp->ulpStatus == IOSTAT_LOCAL_REJECT && 1057 ((irsp->un.ulpWord[4] & IOERR_PARAM_MASK) == 1058 IOERR_LOOP_OPEN_FAILURE))) 1059 goto flogifail; 1060 1061 lpfc_printf_vlog(vport, KERN_WARNING, LOG_ELS, 1062 "0150 FLOGI failure Status:x%x/x%x xri x%x TMO:x%x\n", 1063 irsp->ulpStatus, irsp->un.ulpWord[4], 1064 cmdiocb->sli4_xritag, irsp->ulpTimeout); 1065 1066 /* FLOGI failed, so there is no fabric */ 1067 spin_lock_irq(shost->host_lock); 1068 vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP); 1069 spin_unlock_irq(shost->host_lock); 1070 1071 /* If private loop, then allow max outstanding els to be 1072 * LPFC_MAX_DISC_THREADS (32). Scanning in the case of no 1073 * alpa map would take too long otherwise. 1074 */ 1075 if (phba->alpa_map[0] == 0) 1076 vport->cfg_discovery_threads = LPFC_MAX_DISC_THREADS; 1077 if ((phba->sli_rev == LPFC_SLI_REV4) && 1078 (!(vport->fc_flag & FC_VFI_REGISTERED) || 1079 (vport->fc_prevDID != vport->fc_myDID) || 1080 phba->fc_topology_changed)) { 1081 if (vport->fc_flag & FC_VFI_REGISTERED) { 1082 if (phba->fc_topology_changed) { 1083 lpfc_unregister_fcf_prep(phba); 1084 spin_lock_irq(shost->host_lock); 1085 vport->fc_flag &= ~FC_VFI_REGISTERED; 1086 spin_unlock_irq(shost->host_lock); 1087 phba->fc_topology_changed = 0; 1088 } else { 1089 lpfc_sli4_unreg_all_rpis(vport); 1090 } 1091 } 1092 1093 /* Do not register VFI if the driver aborted FLOGI */ 1094 if (!lpfc_error_lost_link(irsp)) 1095 lpfc_issue_reg_vfi(vport); 1096 lpfc_nlp_put(ndlp); 1097 goto out; 1098 } 1099 goto flogifail; 1100 } 1101 spin_lock_irq(shost->host_lock); 1102 vport->fc_flag &= ~FC_VPORT_CVL_RCVD; 1103 vport->fc_flag &= ~FC_VPORT_LOGO_RCVD; 1104 spin_unlock_irq(shost->host_lock); 1105 1106 /* 1107 * The FLogI succeeded. Sync the data for the CPU before 1108 * accessing it. 1109 */ 1110 prsp = list_get_first(&pcmd->list, struct lpfc_dmabuf, list); 1111 if (!prsp) 1112 goto out; 1113 sp = prsp->virt + sizeof(uint32_t); 1114 1115 /* FLOGI completes successfully */ 1116 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, 1117 "0101 FLOGI completes successfully, I/O tag:x%x, " 1118 "xri x%x Data: x%x x%x x%x x%x x%x %x\n", 1119 cmdiocb->iotag, cmdiocb->sli4_xritag, 1120 irsp->un.ulpWord[4], sp->cmn.e_d_tov, 1121 sp->cmn.w2.r_a_tov, sp->cmn.edtovResolution, 1122 vport->port_state, vport->fc_flag); 1123 1124 if (vport->port_state == LPFC_FLOGI) { 1125 /* 1126 * If Common Service Parameters indicate Nport 1127 * we are point to point, if Fport we are Fabric. 1128 */ 1129 if (sp->cmn.fPort) 1130 rc = lpfc_cmpl_els_flogi_fabric(vport, ndlp, sp, irsp); 1131 else if (!(phba->hba_flag & HBA_FCOE_MODE)) 1132 rc = lpfc_cmpl_els_flogi_nport(vport, ndlp, sp); 1133 else { 1134 lpfc_printf_vlog(vport, KERN_ERR, 1135 LOG_FIP | LOG_ELS, 1136 "2831 FLOGI response with cleared Fabric " 1137 "bit fcf_index 0x%x " 1138 "Switch Name %02x%02x%02x%02x%02x%02x%02x%02x " 1139 "Fabric Name " 1140 "%02x%02x%02x%02x%02x%02x%02x%02x\n", 1141 phba->fcf.current_rec.fcf_indx, 1142 phba->fcf.current_rec.switch_name[0], 1143 phba->fcf.current_rec.switch_name[1], 1144 phba->fcf.current_rec.switch_name[2], 1145 phba->fcf.current_rec.switch_name[3], 1146 phba->fcf.current_rec.switch_name[4], 1147 phba->fcf.current_rec.switch_name[5], 1148 phba->fcf.current_rec.switch_name[6], 1149 phba->fcf.current_rec.switch_name[7], 1150 phba->fcf.current_rec.fabric_name[0], 1151 phba->fcf.current_rec.fabric_name[1], 1152 phba->fcf.current_rec.fabric_name[2], 1153 phba->fcf.current_rec.fabric_name[3], 1154 phba->fcf.current_rec.fabric_name[4], 1155 phba->fcf.current_rec.fabric_name[5], 1156 phba->fcf.current_rec.fabric_name[6], 1157 phba->fcf.current_rec.fabric_name[7]); 1158 lpfc_nlp_put(ndlp); 1159 spin_lock_irq(&phba->hbalock); 1160 phba->fcf.fcf_flag &= ~FCF_DISCOVERY; 1161 phba->hba_flag &= ~(FCF_RR_INPROG | HBA_DEVLOSS_TMO); 1162 spin_unlock_irq(&phba->hbalock); 1163 phba->fcf.fcf_redisc_attempted = 0; /* reset */ 1164 goto out; 1165 } 1166 if (!rc) { 1167 /* Mark the FCF discovery process done */ 1168 if (phba->hba_flag & HBA_FIP_SUPPORT) 1169 lpfc_printf_vlog(vport, KERN_INFO, LOG_FIP | 1170 LOG_ELS, 1171 "2769 FLOGI to FCF (x%x) " 1172 "completed successfully\n", 1173 phba->fcf.current_rec.fcf_indx); 1174 spin_lock_irq(&phba->hbalock); 1175 phba->fcf.fcf_flag &= ~FCF_DISCOVERY; 1176 phba->hba_flag &= ~(FCF_RR_INPROG | HBA_DEVLOSS_TMO); 1177 spin_unlock_irq(&phba->hbalock); 1178 phba->fcf.fcf_redisc_attempted = 0; /* reset */ 1179 goto out; 1180 } 1181 } 1182 1183 flogifail: 1184 spin_lock_irq(&phba->hbalock); 1185 phba->fcf.fcf_flag &= ~FCF_DISCOVERY; 1186 spin_unlock_irq(&phba->hbalock); 1187 1188 lpfc_nlp_put(ndlp); 1189 1190 if (!lpfc_error_lost_link(irsp)) { 1191 /* FLOGI failed, so just use loop map to make discovery list */ 1192 lpfc_disc_list_loopmap(vport); 1193 1194 /* Start discovery */ 1195 lpfc_disc_start(vport); 1196 } else if (((irsp->ulpStatus != IOSTAT_LOCAL_REJECT) || 1197 (((irsp->un.ulpWord[4] & IOERR_PARAM_MASK) != 1198 IOERR_SLI_ABORTED) && 1199 ((irsp->un.ulpWord[4] & IOERR_PARAM_MASK) != 1200 IOERR_SLI_DOWN))) && 1201 (phba->link_state != LPFC_CLEAR_LA)) { 1202 /* If FLOGI failed enable link interrupt. */ 1203 lpfc_issue_clear_la(phba, vport); 1204 } 1205 out: 1206 lpfc_els_free_iocb(phba, cmdiocb); 1207 } 1208 1209 /** 1210 * lpfc_issue_els_flogi - Issue an flogi iocb command for a vport 1211 * @vport: pointer to a host virtual N_Port data structure. 1212 * @ndlp: pointer to a node-list data structure. 1213 * @retry: number of retries to the command IOCB. 1214 * 1215 * This routine issues a Fabric Login (FLOGI) Request ELS command 1216 * for a @vport. The initiator service parameters are put into the payload 1217 * of the FLOGI Request IOCB and the top-level callback function pointer 1218 * to lpfc_cmpl_els_flogi() routine is put to the IOCB completion callback 1219 * function field. The lpfc_issue_fabric_iocb routine is invoked to send 1220 * out FLOGI ELS command with one outstanding fabric IOCB at a time. 1221 * 1222 * Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp 1223 * will be incremented by 1 for holding the ndlp and the reference to ndlp 1224 * will be stored into the context1 field of the IOCB for the completion 1225 * callback function to the FLOGI ELS command. 1226 * 1227 * Return code 1228 * 0 - successfully issued flogi iocb for @vport 1229 * 1 - failed to issue flogi iocb for @vport 1230 **/ 1231 static int 1232 lpfc_issue_els_flogi(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 1233 uint8_t retry) 1234 { 1235 struct lpfc_hba *phba = vport->phba; 1236 struct serv_parm *sp; 1237 IOCB_t *icmd; 1238 struct lpfc_iocbq *elsiocb; 1239 struct lpfc_iocbq defer_flogi_acc; 1240 uint8_t *pcmd; 1241 uint16_t cmdsize; 1242 uint32_t tmo, did; 1243 int rc; 1244 1245 cmdsize = (sizeof(uint32_t) + sizeof(struct serv_parm)); 1246 elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp, 1247 ndlp->nlp_DID, ELS_CMD_FLOGI); 1248 1249 if (!elsiocb) 1250 return 1; 1251 1252 icmd = &elsiocb->iocb; 1253 pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt); 1254 1255 /* For FLOGI request, remainder of payload is service parameters */ 1256 *((uint32_t *) (pcmd)) = ELS_CMD_FLOGI; 1257 pcmd += sizeof(uint32_t); 1258 memcpy(pcmd, &vport->fc_sparam, sizeof(struct serv_parm)); 1259 sp = (struct serv_parm *) pcmd; 1260 1261 /* Setup CSPs accordingly for Fabric */ 1262 sp->cmn.e_d_tov = 0; 1263 sp->cmn.w2.r_a_tov = 0; 1264 sp->cmn.virtual_fabric_support = 0; 1265 sp->cls1.classValid = 0; 1266 if (sp->cmn.fcphLow < FC_PH3) 1267 sp->cmn.fcphLow = FC_PH3; 1268 if (sp->cmn.fcphHigh < FC_PH3) 1269 sp->cmn.fcphHigh = FC_PH3; 1270 1271 if (phba->sli_rev == LPFC_SLI_REV4) { 1272 if (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) == 1273 LPFC_SLI_INTF_IF_TYPE_0) { 1274 elsiocb->iocb.ulpCt_h = ((SLI4_CT_FCFI >> 1) & 1); 1275 elsiocb->iocb.ulpCt_l = (SLI4_CT_FCFI & 1); 1276 /* FLOGI needs to be 3 for WQE FCFI */ 1277 /* Set the fcfi to the fcfi we registered with */ 1278 elsiocb->iocb.ulpContext = phba->fcf.fcfi; 1279 } 1280 /* Can't do SLI4 class2 without support sequence coalescing */ 1281 sp->cls2.classValid = 0; 1282 sp->cls2.seqDelivery = 0; 1283 } else { 1284 /* Historical, setting sequential-delivery bit for SLI3 */ 1285 sp->cls2.seqDelivery = (sp->cls2.classValid) ? 1 : 0; 1286 sp->cls3.seqDelivery = (sp->cls3.classValid) ? 1 : 0; 1287 if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) { 1288 sp->cmn.request_multiple_Nport = 1; 1289 /* For FLOGI, Let FLOGI rsp set the NPortID for VPI 0 */ 1290 icmd->ulpCt_h = 1; 1291 icmd->ulpCt_l = 0; 1292 } else 1293 sp->cmn.request_multiple_Nport = 0; 1294 } 1295 1296 if (phba->fc_topology != LPFC_TOPOLOGY_LOOP) { 1297 icmd->un.elsreq64.myID = 0; 1298 icmd->un.elsreq64.fl = 1; 1299 } 1300 1301 tmo = phba->fc_ratov; 1302 phba->fc_ratov = LPFC_DISC_FLOGI_TMO; 1303 lpfc_set_disctmo(vport); 1304 phba->fc_ratov = tmo; 1305 1306 phba->fc_stat.elsXmitFLOGI++; 1307 elsiocb->iocb_cmpl = lpfc_cmpl_els_flogi; 1308 1309 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, 1310 "Issue FLOGI: opt:x%x", 1311 phba->sli3_options, 0, 0); 1312 1313 rc = lpfc_issue_fabric_iocb(phba, elsiocb); 1314 1315 phba->hba_flag |= HBA_FLOGI_ISSUED; 1316 1317 /* Check for a deferred FLOGI ACC condition */ 1318 if (phba->defer_flogi_acc_flag) { 1319 did = vport->fc_myDID; 1320 vport->fc_myDID = Fabric_DID; 1321 1322 memset(&defer_flogi_acc, 0, sizeof(struct lpfc_iocbq)); 1323 1324 defer_flogi_acc.iocb.ulpContext = phba->defer_flogi_acc_rx_id; 1325 defer_flogi_acc.iocb.unsli3.rcvsli3.ox_id = 1326 phba->defer_flogi_acc_ox_id; 1327 1328 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, 1329 "3354 Xmit deferred FLOGI ACC: rx_id: x%x," 1330 " ox_id: x%x, hba_flag x%x\n", 1331 phba->defer_flogi_acc_rx_id, 1332 phba->defer_flogi_acc_ox_id, phba->hba_flag); 1333 1334 /* Send deferred FLOGI ACC */ 1335 lpfc_els_rsp_acc(vport, ELS_CMD_FLOGI, &defer_flogi_acc, 1336 ndlp, NULL); 1337 1338 phba->defer_flogi_acc_flag = false; 1339 1340 vport->fc_myDID = did; 1341 } 1342 1343 if (rc == IOCB_ERROR) { 1344 lpfc_els_free_iocb(phba, elsiocb); 1345 return 1; 1346 } 1347 return 0; 1348 } 1349 1350 /** 1351 * lpfc_els_abort_flogi - Abort all outstanding flogi iocbs 1352 * @phba: pointer to lpfc hba data structure. 1353 * 1354 * This routine aborts all the outstanding Fabric Login (FLOGI) IOCBs 1355 * with a @phba. This routine walks all the outstanding IOCBs on the txcmplq 1356 * list and issues an abort IOCB commond on each outstanding IOCB that 1357 * contains a active Fabric_DID ndlp. Note that this function is to issue 1358 * the abort IOCB command on all the outstanding IOCBs, thus when this 1359 * function returns, it does not guarantee all the IOCBs are actually aborted. 1360 * 1361 * Return code 1362 * 0 - Successfully issued abort iocb on all outstanding flogis (Always 0) 1363 **/ 1364 int 1365 lpfc_els_abort_flogi(struct lpfc_hba *phba) 1366 { 1367 struct lpfc_sli_ring *pring; 1368 struct lpfc_iocbq *iocb, *next_iocb; 1369 struct lpfc_nodelist *ndlp; 1370 IOCB_t *icmd; 1371 1372 /* Abort outstanding I/O on NPort <nlp_DID> */ 1373 lpfc_printf_log(phba, KERN_INFO, LOG_DISCOVERY, 1374 "0201 Abort outstanding I/O on NPort x%x\n", 1375 Fabric_DID); 1376 1377 pring = lpfc_phba_elsring(phba); 1378 if (unlikely(!pring)) 1379 return -EIO; 1380 1381 /* 1382 * Check the txcmplq for an iocb that matches the nport the driver is 1383 * searching for. 1384 */ 1385 spin_lock_irq(&phba->hbalock); 1386 list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq, list) { 1387 icmd = &iocb->iocb; 1388 if (icmd->ulpCommand == CMD_ELS_REQUEST64_CR) { 1389 ndlp = (struct lpfc_nodelist *)(iocb->context1); 1390 if (ndlp && NLP_CHK_NODE_ACT(ndlp) && 1391 (ndlp->nlp_DID == Fabric_DID)) 1392 lpfc_sli_issue_abort_iotag(phba, pring, iocb); 1393 } 1394 } 1395 spin_unlock_irq(&phba->hbalock); 1396 1397 return 0; 1398 } 1399 1400 /** 1401 * lpfc_initial_flogi - Issue an initial fabric login for a vport 1402 * @vport: pointer to a host virtual N_Port data structure. 1403 * 1404 * This routine issues an initial Fabric Login (FLOGI) for the @vport 1405 * specified. It first searches the ndlp with the Fabric_DID (0xfffffe) from 1406 * the @vport's ndlp list. If no such ndlp found, it will create an ndlp and 1407 * put it into the @vport's ndlp list. If an inactive ndlp found on the list, 1408 * it will just be enabled and made active. The lpfc_issue_els_flogi() routine 1409 * is then invoked with the @vport and the ndlp to perform the FLOGI for the 1410 * @vport. 1411 * 1412 * Return code 1413 * 0 - failed to issue initial flogi for @vport 1414 * 1 - successfully issued initial flogi for @vport 1415 **/ 1416 int 1417 lpfc_initial_flogi(struct lpfc_vport *vport) 1418 { 1419 struct lpfc_nodelist *ndlp; 1420 1421 vport->port_state = LPFC_FLOGI; 1422 lpfc_set_disctmo(vport); 1423 1424 /* First look for the Fabric ndlp */ 1425 ndlp = lpfc_findnode_did(vport, Fabric_DID); 1426 if (!ndlp) { 1427 /* Cannot find existing Fabric ndlp, so allocate a new one */ 1428 ndlp = lpfc_nlp_init(vport, Fabric_DID); 1429 if (!ndlp) 1430 return 0; 1431 /* Set the node type */ 1432 ndlp->nlp_type |= NLP_FABRIC; 1433 /* Put ndlp onto node list */ 1434 lpfc_enqueue_node(vport, ndlp); 1435 } else if (!NLP_CHK_NODE_ACT(ndlp)) { 1436 /* re-setup ndlp without removing from node list */ 1437 ndlp = lpfc_enable_node(vport, ndlp, NLP_STE_UNUSED_NODE); 1438 if (!ndlp) 1439 return 0; 1440 } 1441 1442 if (lpfc_issue_els_flogi(vport, ndlp, 0)) { 1443 /* This decrement of reference count to node shall kick off 1444 * the release of the node. 1445 */ 1446 lpfc_nlp_put(ndlp); 1447 return 0; 1448 } 1449 return 1; 1450 } 1451 1452 /** 1453 * lpfc_initial_fdisc - Issue an initial fabric discovery for a vport 1454 * @vport: pointer to a host virtual N_Port data structure. 1455 * 1456 * This routine issues an initial Fabric Discover (FDISC) for the @vport 1457 * specified. It first searches the ndlp with the Fabric_DID (0xfffffe) from 1458 * the @vport's ndlp list. If no such ndlp found, it will create an ndlp and 1459 * put it into the @vport's ndlp list. If an inactive ndlp found on the list, 1460 * it will just be enabled and made active. The lpfc_issue_els_fdisc() routine 1461 * is then invoked with the @vport and the ndlp to perform the FDISC for the 1462 * @vport. 1463 * 1464 * Return code 1465 * 0 - failed to issue initial fdisc for @vport 1466 * 1 - successfully issued initial fdisc for @vport 1467 **/ 1468 int 1469 lpfc_initial_fdisc(struct lpfc_vport *vport) 1470 { 1471 struct lpfc_nodelist *ndlp; 1472 1473 /* First look for the Fabric ndlp */ 1474 ndlp = lpfc_findnode_did(vport, Fabric_DID); 1475 if (!ndlp) { 1476 /* Cannot find existing Fabric ndlp, so allocate a new one */ 1477 ndlp = lpfc_nlp_init(vport, Fabric_DID); 1478 if (!ndlp) 1479 return 0; 1480 /* Put ndlp onto node list */ 1481 lpfc_enqueue_node(vport, ndlp); 1482 } else if (!NLP_CHK_NODE_ACT(ndlp)) { 1483 /* re-setup ndlp without removing from node list */ 1484 ndlp = lpfc_enable_node(vport, ndlp, NLP_STE_UNUSED_NODE); 1485 if (!ndlp) 1486 return 0; 1487 } 1488 1489 if (lpfc_issue_els_fdisc(vport, ndlp, 0)) { 1490 /* decrement node reference count to trigger the release of 1491 * the node. 1492 */ 1493 lpfc_nlp_put(ndlp); 1494 return 0; 1495 } 1496 return 1; 1497 } 1498 1499 /** 1500 * lpfc_more_plogi - Check and issue remaining plogis for a vport 1501 * @vport: pointer to a host virtual N_Port data structure. 1502 * 1503 * This routine checks whether there are more remaining Port Logins 1504 * (PLOGI) to be issued for the @vport. If so, it will invoke the routine 1505 * lpfc_els_disc_plogi() to go through the Node Port Recovery (NPR) nodes 1506 * to issue ELS PLOGIs up to the configured discover threads with the 1507 * @vport (@vport->cfg_discovery_threads). The function also decrement 1508 * the @vport's num_disc_node by 1 if it is not already 0. 1509 **/ 1510 void 1511 lpfc_more_plogi(struct lpfc_vport *vport) 1512 { 1513 if (vport->num_disc_nodes) 1514 vport->num_disc_nodes--; 1515 1516 /* Continue discovery with <num_disc_nodes> PLOGIs to go */ 1517 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, 1518 "0232 Continue discovery with %d PLOGIs to go " 1519 "Data: x%x x%x x%x\n", 1520 vport->num_disc_nodes, vport->fc_plogi_cnt, 1521 vport->fc_flag, vport->port_state); 1522 /* Check to see if there are more PLOGIs to be sent */ 1523 if (vport->fc_flag & FC_NLP_MORE) 1524 /* go thru NPR nodes and issue any remaining ELS PLOGIs */ 1525 lpfc_els_disc_plogi(vport); 1526 1527 return; 1528 } 1529 1530 /** 1531 * lpfc_plogi_confirm_nport - Confirm pologi wwpn matches stored ndlp 1532 * @phba: pointer to lpfc hba data structure. 1533 * @prsp: pointer to response IOCB payload. 1534 * @ndlp: pointer to a node-list data structure. 1535 * 1536 * This routine checks and indicates whether the WWPN of an N_Port, retrieved 1537 * from a PLOGI, matches the WWPN that is stored in the @ndlp for that N_POrt. 1538 * The following cases are considered N_Port confirmed: 1539 * 1) The N_Port is a Fabric ndlp; 2) The @ndlp is on vport list and matches 1540 * the WWPN of the N_Port logged into; 3) The @ndlp is not on vport list but 1541 * it does not have WWPN assigned either. If the WWPN is confirmed, the 1542 * pointer to the @ndlp will be returned. If the WWPN is not confirmed: 1543 * 1) if there is a node on vport list other than the @ndlp with the same 1544 * WWPN of the N_Port PLOGI logged into, the lpfc_unreg_rpi() will be invoked 1545 * on that node to release the RPI associated with the node; 2) if there is 1546 * no node found on vport list with the same WWPN of the N_Port PLOGI logged 1547 * into, a new node shall be allocated (or activated). In either case, the 1548 * parameters of the @ndlp shall be copied to the new_ndlp, the @ndlp shall 1549 * be released and the new_ndlp shall be put on to the vport node list and 1550 * its pointer returned as the confirmed node. 1551 * 1552 * Note that before the @ndlp got "released", the keepDID from not-matching 1553 * or inactive "new_ndlp" on the vport node list is assigned to the nlp_DID 1554 * of the @ndlp. This is because the release of @ndlp is actually to put it 1555 * into an inactive state on the vport node list and the vport node list 1556 * management algorithm does not allow two node with a same DID. 1557 * 1558 * Return code 1559 * pointer to the PLOGI N_Port @ndlp 1560 **/ 1561 static struct lpfc_nodelist * 1562 lpfc_plogi_confirm_nport(struct lpfc_hba *phba, uint32_t *prsp, 1563 struct lpfc_nodelist *ndlp) 1564 { 1565 struct lpfc_vport *vport = ndlp->vport; 1566 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 1567 struct lpfc_nodelist *new_ndlp; 1568 struct lpfc_rport_data *rdata; 1569 struct fc_rport *rport; 1570 struct serv_parm *sp; 1571 uint8_t name[sizeof(struct lpfc_name)]; 1572 uint32_t rc, keepDID = 0, keep_nlp_flag = 0; 1573 uint32_t keep_new_nlp_flag = 0; 1574 uint16_t keep_nlp_state; 1575 u32 keep_nlp_fc4_type = 0; 1576 struct lpfc_nvme_rport *keep_nrport = NULL; 1577 int put_node; 1578 int put_rport; 1579 unsigned long *active_rrqs_xri_bitmap = NULL; 1580 1581 /* Fabric nodes can have the same WWPN so we don't bother searching 1582 * by WWPN. Just return the ndlp that was given to us. 1583 */ 1584 if (ndlp->nlp_type & NLP_FABRIC) 1585 return ndlp; 1586 1587 sp = (struct serv_parm *) ((uint8_t *) prsp + sizeof(uint32_t)); 1588 memset(name, 0, sizeof(struct lpfc_name)); 1589 1590 /* Now we find out if the NPort we are logging into, matches the WWPN 1591 * we have for that ndlp. If not, we have some work to do. 1592 */ 1593 new_ndlp = lpfc_findnode_wwpn(vport, &sp->portName); 1594 1595 /* return immediately if the WWPN matches ndlp */ 1596 if (new_ndlp == ndlp && NLP_CHK_NODE_ACT(new_ndlp)) 1597 return ndlp; 1598 1599 if (phba->sli_rev == LPFC_SLI_REV4) { 1600 active_rrqs_xri_bitmap = mempool_alloc(phba->active_rrq_pool, 1601 GFP_KERNEL); 1602 if (active_rrqs_xri_bitmap) 1603 memset(active_rrqs_xri_bitmap, 0, 1604 phba->cfg_rrq_xri_bitmap_sz); 1605 } 1606 1607 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS | LOG_NODE, 1608 "3178 PLOGI confirm: ndlp x%x x%x x%x: " 1609 "new_ndlp x%x x%x x%x\n", 1610 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_fc4_type, 1611 (new_ndlp ? new_ndlp->nlp_DID : 0), 1612 (new_ndlp ? new_ndlp->nlp_flag : 0), 1613 (new_ndlp ? new_ndlp->nlp_fc4_type : 0)); 1614 1615 if (!new_ndlp) { 1616 rc = memcmp(&ndlp->nlp_portname, name, 1617 sizeof(struct lpfc_name)); 1618 if (!rc) { 1619 if (active_rrqs_xri_bitmap) 1620 mempool_free(active_rrqs_xri_bitmap, 1621 phba->active_rrq_pool); 1622 return ndlp; 1623 } 1624 new_ndlp = lpfc_nlp_init(vport, ndlp->nlp_DID); 1625 if (!new_ndlp) { 1626 if (active_rrqs_xri_bitmap) 1627 mempool_free(active_rrqs_xri_bitmap, 1628 phba->active_rrq_pool); 1629 return ndlp; 1630 } 1631 } else if (!NLP_CHK_NODE_ACT(new_ndlp)) { 1632 rc = memcmp(&ndlp->nlp_portname, name, 1633 sizeof(struct lpfc_name)); 1634 if (!rc) { 1635 if (active_rrqs_xri_bitmap) 1636 mempool_free(active_rrqs_xri_bitmap, 1637 phba->active_rrq_pool); 1638 return ndlp; 1639 } 1640 new_ndlp = lpfc_enable_node(vport, new_ndlp, 1641 NLP_STE_UNUSED_NODE); 1642 if (!new_ndlp) { 1643 if (active_rrqs_xri_bitmap) 1644 mempool_free(active_rrqs_xri_bitmap, 1645 phba->active_rrq_pool); 1646 return ndlp; 1647 } 1648 keepDID = new_ndlp->nlp_DID; 1649 if ((phba->sli_rev == LPFC_SLI_REV4) && active_rrqs_xri_bitmap) 1650 memcpy(active_rrqs_xri_bitmap, 1651 new_ndlp->active_rrqs_xri_bitmap, 1652 phba->cfg_rrq_xri_bitmap_sz); 1653 } else { 1654 keepDID = new_ndlp->nlp_DID; 1655 if (phba->sli_rev == LPFC_SLI_REV4 && 1656 active_rrqs_xri_bitmap) 1657 memcpy(active_rrqs_xri_bitmap, 1658 new_ndlp->active_rrqs_xri_bitmap, 1659 phba->cfg_rrq_xri_bitmap_sz); 1660 } 1661 1662 /* At this point in this routine, we know new_ndlp will be 1663 * returned. however, any previous GID_FTs that were done 1664 * would have updated nlp_fc4_type in ndlp, so we must ensure 1665 * new_ndlp has the right value. 1666 */ 1667 if (vport->fc_flag & FC_FABRIC) { 1668 keep_nlp_fc4_type = new_ndlp->nlp_fc4_type; 1669 new_ndlp->nlp_fc4_type = ndlp->nlp_fc4_type; 1670 } 1671 1672 lpfc_unreg_rpi(vport, new_ndlp); 1673 new_ndlp->nlp_DID = ndlp->nlp_DID; 1674 new_ndlp->nlp_prev_state = ndlp->nlp_prev_state; 1675 if (phba->sli_rev == LPFC_SLI_REV4) 1676 memcpy(new_ndlp->active_rrqs_xri_bitmap, 1677 ndlp->active_rrqs_xri_bitmap, 1678 phba->cfg_rrq_xri_bitmap_sz); 1679 1680 spin_lock_irq(shost->host_lock); 1681 keep_new_nlp_flag = new_ndlp->nlp_flag; 1682 keep_nlp_flag = ndlp->nlp_flag; 1683 new_ndlp->nlp_flag = ndlp->nlp_flag; 1684 1685 /* if new_ndlp had NLP_UNREG_INP set, keep it */ 1686 if (keep_new_nlp_flag & NLP_UNREG_INP) 1687 new_ndlp->nlp_flag |= NLP_UNREG_INP; 1688 else 1689 new_ndlp->nlp_flag &= ~NLP_UNREG_INP; 1690 1691 /* if new_ndlp had NLP_RPI_REGISTERED set, keep it */ 1692 if (keep_new_nlp_flag & NLP_RPI_REGISTERED) 1693 new_ndlp->nlp_flag |= NLP_RPI_REGISTERED; 1694 else 1695 new_ndlp->nlp_flag &= ~NLP_RPI_REGISTERED; 1696 1697 ndlp->nlp_flag = keep_new_nlp_flag; 1698 1699 /* if ndlp had NLP_UNREG_INP set, keep it */ 1700 if (keep_nlp_flag & NLP_UNREG_INP) 1701 ndlp->nlp_flag |= NLP_UNREG_INP; 1702 else 1703 ndlp->nlp_flag &= ~NLP_UNREG_INP; 1704 1705 /* if ndlp had NLP_RPI_REGISTERED set, keep it */ 1706 if (keep_nlp_flag & NLP_RPI_REGISTERED) 1707 ndlp->nlp_flag |= NLP_RPI_REGISTERED; 1708 else 1709 ndlp->nlp_flag &= ~NLP_RPI_REGISTERED; 1710 1711 spin_unlock_irq(shost->host_lock); 1712 1713 /* Set nlp_states accordingly */ 1714 keep_nlp_state = new_ndlp->nlp_state; 1715 lpfc_nlp_set_state(vport, new_ndlp, ndlp->nlp_state); 1716 1717 /* interchange the nvme remoteport structs */ 1718 keep_nrport = new_ndlp->nrport; 1719 new_ndlp->nrport = ndlp->nrport; 1720 1721 /* Move this back to NPR state */ 1722 if (memcmp(&ndlp->nlp_portname, name, sizeof(struct lpfc_name)) == 0) { 1723 /* The new_ndlp is replacing ndlp totally, so we need 1724 * to put ndlp on UNUSED list and try to free it. 1725 */ 1726 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, 1727 "3179 PLOGI confirm NEW: %x %x\n", 1728 new_ndlp->nlp_DID, keepDID); 1729 1730 /* Fix up the rport accordingly */ 1731 rport = ndlp->rport; 1732 if (rport) { 1733 rdata = rport->dd_data; 1734 if (rdata->pnode == ndlp) { 1735 /* break the link before dropping the ref */ 1736 ndlp->rport = NULL; 1737 lpfc_nlp_put(ndlp); 1738 rdata->pnode = lpfc_nlp_get(new_ndlp); 1739 new_ndlp->rport = rport; 1740 } 1741 new_ndlp->nlp_type = ndlp->nlp_type; 1742 } 1743 1744 /* Fix up the nvme rport */ 1745 if (ndlp->nrport) { 1746 ndlp->nrport = NULL; 1747 lpfc_nlp_put(ndlp); 1748 } 1749 1750 /* We shall actually free the ndlp with both nlp_DID and 1751 * nlp_portname fields equals 0 to avoid any ndlp on the 1752 * nodelist never to be used. 1753 */ 1754 if (ndlp->nlp_DID == 0) { 1755 spin_lock_irq(&phba->ndlp_lock); 1756 NLP_SET_FREE_REQ(ndlp); 1757 spin_unlock_irq(&phba->ndlp_lock); 1758 } 1759 1760 /* Two ndlps cannot have the same did on the nodelist. 1761 * Note: for this case, ndlp has a NULL WWPN so setting 1762 * the nlp_fc4_type isn't required. 1763 */ 1764 ndlp->nlp_DID = keepDID; 1765 lpfc_nlp_set_state(vport, ndlp, keep_nlp_state); 1766 if (phba->sli_rev == LPFC_SLI_REV4 && 1767 active_rrqs_xri_bitmap) 1768 memcpy(ndlp->active_rrqs_xri_bitmap, 1769 active_rrqs_xri_bitmap, 1770 phba->cfg_rrq_xri_bitmap_sz); 1771 1772 if (!NLP_CHK_NODE_ACT(ndlp)) 1773 lpfc_drop_node(vport, ndlp); 1774 } 1775 else { 1776 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, 1777 "3180 PLOGI confirm SWAP: %x %x\n", 1778 new_ndlp->nlp_DID, keepDID); 1779 1780 lpfc_unreg_rpi(vport, ndlp); 1781 1782 /* Two ndlps cannot have the same did and the fc4 1783 * type must be transferred because the ndlp is in 1784 * flight. 1785 */ 1786 ndlp->nlp_DID = keepDID; 1787 ndlp->nlp_fc4_type = keep_nlp_fc4_type; 1788 1789 if (phba->sli_rev == LPFC_SLI_REV4 && 1790 active_rrqs_xri_bitmap) 1791 memcpy(ndlp->active_rrqs_xri_bitmap, 1792 active_rrqs_xri_bitmap, 1793 phba->cfg_rrq_xri_bitmap_sz); 1794 1795 /* Since we are switching over to the new_ndlp, 1796 * reset the old ndlp state 1797 */ 1798 if ((ndlp->nlp_state == NLP_STE_UNMAPPED_NODE) || 1799 (ndlp->nlp_state == NLP_STE_MAPPED_NODE)) 1800 keep_nlp_state = NLP_STE_NPR_NODE; 1801 lpfc_nlp_set_state(vport, ndlp, keep_nlp_state); 1802 1803 /* Previous ndlp no longer active with nvme host transport. 1804 * Remove reference from earlier registration unless the 1805 * nvme host took care of it. 1806 */ 1807 if (ndlp->nrport) 1808 lpfc_nlp_put(ndlp); 1809 ndlp->nrport = keep_nrport; 1810 1811 /* Fix up the rport accordingly */ 1812 rport = ndlp->rport; 1813 if (rport) { 1814 rdata = rport->dd_data; 1815 put_node = rdata->pnode != NULL; 1816 put_rport = ndlp->rport != NULL; 1817 rdata->pnode = NULL; 1818 ndlp->rport = NULL; 1819 if (put_node) 1820 lpfc_nlp_put(ndlp); 1821 if (put_rport) 1822 put_device(&rport->dev); 1823 } 1824 } 1825 if (phba->sli_rev == LPFC_SLI_REV4 && 1826 active_rrqs_xri_bitmap) 1827 mempool_free(active_rrqs_xri_bitmap, 1828 phba->active_rrq_pool); 1829 1830 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS | LOG_NODE, 1831 "3173 PLOGI confirm exit: new_ndlp x%x x%x x%x\n", 1832 new_ndlp->nlp_DID, new_ndlp->nlp_flag, 1833 new_ndlp->nlp_fc4_type); 1834 1835 return new_ndlp; 1836 } 1837 1838 /** 1839 * lpfc_end_rscn - Check and handle more rscn for a vport 1840 * @vport: pointer to a host virtual N_Port data structure. 1841 * 1842 * This routine checks whether more Registration State Change 1843 * Notifications (RSCNs) came in while the discovery state machine was in 1844 * the FC_RSCN_MODE. If so, the lpfc_els_handle_rscn() routine will be 1845 * invoked to handle the additional RSCNs for the @vport. Otherwise, the 1846 * FC_RSCN_MODE bit will be cleared with the @vport to mark as the end of 1847 * handling the RSCNs. 1848 **/ 1849 void 1850 lpfc_end_rscn(struct lpfc_vport *vport) 1851 { 1852 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 1853 1854 if (vport->fc_flag & FC_RSCN_MODE) { 1855 /* 1856 * Check to see if more RSCNs came in while we were 1857 * processing this one. 1858 */ 1859 if (vport->fc_rscn_id_cnt || 1860 (vport->fc_flag & FC_RSCN_DISCOVERY) != 0) 1861 lpfc_els_handle_rscn(vport); 1862 else { 1863 spin_lock_irq(shost->host_lock); 1864 vport->fc_flag &= ~FC_RSCN_MODE; 1865 spin_unlock_irq(shost->host_lock); 1866 } 1867 } 1868 } 1869 1870 /** 1871 * lpfc_cmpl_els_rrq - Completion handled for els RRQs. 1872 * @phba: pointer to lpfc hba data structure. 1873 * @cmdiocb: pointer to lpfc command iocb data structure. 1874 * @rspiocb: pointer to lpfc response iocb data structure. 1875 * 1876 * This routine will call the clear rrq function to free the rrq and 1877 * clear the xri's bit in the ndlp's xri_bitmap. If the ndlp does not 1878 * exist then the clear_rrq is still called because the rrq needs to 1879 * be freed. 1880 **/ 1881 1882 static void 1883 lpfc_cmpl_els_rrq(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb, 1884 struct lpfc_iocbq *rspiocb) 1885 { 1886 struct lpfc_vport *vport = cmdiocb->vport; 1887 IOCB_t *irsp; 1888 struct lpfc_nodelist *ndlp; 1889 struct lpfc_node_rrq *rrq; 1890 1891 /* we pass cmdiocb to state machine which needs rspiocb as well */ 1892 rrq = cmdiocb->context_un.rrq; 1893 cmdiocb->context_un.rsp_iocb = rspiocb; 1894 1895 irsp = &rspiocb->iocb; 1896 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, 1897 "RRQ cmpl: status:x%x/x%x did:x%x", 1898 irsp->ulpStatus, irsp->un.ulpWord[4], 1899 irsp->un.elsreq64.remoteID); 1900 1901 ndlp = lpfc_findnode_did(vport, irsp->un.elsreq64.remoteID); 1902 if (!ndlp || !NLP_CHK_NODE_ACT(ndlp) || ndlp != rrq->ndlp) { 1903 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS, 1904 "2882 RRQ completes to NPort x%x " 1905 "with no ndlp. Data: x%x x%x x%x\n", 1906 irsp->un.elsreq64.remoteID, 1907 irsp->ulpStatus, irsp->un.ulpWord[4], 1908 irsp->ulpIoTag); 1909 goto out; 1910 } 1911 1912 /* rrq completes to NPort <nlp_DID> */ 1913 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, 1914 "2880 RRQ completes to NPort x%x " 1915 "Data: x%x x%x x%x x%x x%x\n", 1916 ndlp->nlp_DID, irsp->ulpStatus, irsp->un.ulpWord[4], 1917 irsp->ulpTimeout, rrq->xritag, rrq->rxid); 1918 1919 if (irsp->ulpStatus) { 1920 /* Check for retry */ 1921 /* RRQ failed Don't print the vport to vport rjts */ 1922 if (irsp->ulpStatus != IOSTAT_LS_RJT || 1923 (((irsp->un.ulpWord[4]) >> 16 != LSRJT_INVALID_CMD) && 1924 ((irsp->un.ulpWord[4]) >> 16 != LSRJT_UNABLE_TPC)) || 1925 (phba)->pport->cfg_log_verbose & LOG_ELS) 1926 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS, 1927 "2881 RRQ failure DID:%06X Status:x%x/x%x\n", 1928 ndlp->nlp_DID, irsp->ulpStatus, 1929 irsp->un.ulpWord[4]); 1930 } 1931 out: 1932 if (rrq) 1933 lpfc_clr_rrq_active(phba, rrq->xritag, rrq); 1934 lpfc_els_free_iocb(phba, cmdiocb); 1935 return; 1936 } 1937 /** 1938 * lpfc_cmpl_els_plogi - Completion callback function for plogi 1939 * @phba: pointer to lpfc hba data structure. 1940 * @cmdiocb: pointer to lpfc command iocb data structure. 1941 * @rspiocb: pointer to lpfc response iocb data structure. 1942 * 1943 * This routine is the completion callback function for issuing the Port 1944 * Login (PLOGI) command. For PLOGI completion, there must be an active 1945 * ndlp on the vport node list that matches the remote node ID from the 1946 * PLOGI response IOCB. If such ndlp does not exist, the PLOGI is simply 1947 * ignored and command IOCB released. The PLOGI response IOCB status is 1948 * checked for error conditons. If there is error status reported, PLOGI 1949 * retry shall be attempted by invoking the lpfc_els_retry() routine. 1950 * Otherwise, the lpfc_plogi_confirm_nport() routine shall be invoked on 1951 * the ndlp and the NLP_EVT_CMPL_PLOGI state to the Discover State Machine 1952 * (DSM) is set for this PLOGI completion. Finally, it checks whether 1953 * there are additional N_Port nodes with the vport that need to perform 1954 * PLOGI. If so, the lpfc_more_plogi() routine is invoked to issue addition 1955 * PLOGIs. 1956 **/ 1957 static void 1958 lpfc_cmpl_els_plogi(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb, 1959 struct lpfc_iocbq *rspiocb) 1960 { 1961 struct lpfc_vport *vport = cmdiocb->vport; 1962 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 1963 IOCB_t *irsp; 1964 struct lpfc_nodelist *ndlp; 1965 struct lpfc_dmabuf *prsp; 1966 int disc; 1967 1968 /* we pass cmdiocb to state machine which needs rspiocb as well */ 1969 cmdiocb->context_un.rsp_iocb = rspiocb; 1970 1971 irsp = &rspiocb->iocb; 1972 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, 1973 "PLOGI cmpl: status:x%x/x%x did:x%x", 1974 irsp->ulpStatus, irsp->un.ulpWord[4], 1975 irsp->un.elsreq64.remoteID); 1976 1977 ndlp = lpfc_findnode_did(vport, irsp->un.elsreq64.remoteID); 1978 if (!ndlp || !NLP_CHK_NODE_ACT(ndlp)) { 1979 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS, 1980 "0136 PLOGI completes to NPort x%x " 1981 "with no ndlp. Data: x%x x%x x%x\n", 1982 irsp->un.elsreq64.remoteID, 1983 irsp->ulpStatus, irsp->un.ulpWord[4], 1984 irsp->ulpIoTag); 1985 goto out; 1986 } 1987 1988 /* Since ndlp can be freed in the disc state machine, note if this node 1989 * is being used during discovery. 1990 */ 1991 spin_lock_irq(shost->host_lock); 1992 disc = (ndlp->nlp_flag & NLP_NPR_2B_DISC); 1993 ndlp->nlp_flag &= ~NLP_NPR_2B_DISC; 1994 spin_unlock_irq(shost->host_lock); 1995 1996 /* PLOGI completes to NPort <nlp_DID> */ 1997 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, 1998 "0102 PLOGI completes to NPort x%06x " 1999 "Data: x%x x%x x%x x%x x%x\n", 2000 ndlp->nlp_DID, ndlp->nlp_fc4_type, 2001 irsp->ulpStatus, irsp->un.ulpWord[4], 2002 disc, vport->num_disc_nodes); 2003 2004 /* Check to see if link went down during discovery */ 2005 if (lpfc_els_chk_latt(vport)) { 2006 spin_lock_irq(shost->host_lock); 2007 ndlp->nlp_flag |= NLP_NPR_2B_DISC; 2008 spin_unlock_irq(shost->host_lock); 2009 goto out; 2010 } 2011 2012 if (irsp->ulpStatus) { 2013 /* Check for retry */ 2014 if (lpfc_els_retry(phba, cmdiocb, rspiocb)) { 2015 /* ELS command is being retried */ 2016 if (disc) { 2017 spin_lock_irq(shost->host_lock); 2018 ndlp->nlp_flag |= NLP_NPR_2B_DISC; 2019 spin_unlock_irq(shost->host_lock); 2020 } 2021 goto out; 2022 } 2023 /* PLOGI failed Don't print the vport to vport rjts */ 2024 if (irsp->ulpStatus != IOSTAT_LS_RJT || 2025 (((irsp->un.ulpWord[4]) >> 16 != LSRJT_INVALID_CMD) && 2026 ((irsp->un.ulpWord[4]) >> 16 != LSRJT_UNABLE_TPC)) || 2027 (phba)->pport->cfg_log_verbose & LOG_ELS) 2028 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS, 2029 "2753 PLOGI failure DID:%06X Status:x%x/x%x\n", 2030 ndlp->nlp_DID, irsp->ulpStatus, 2031 irsp->un.ulpWord[4]); 2032 /* Do not call DSM for lpfc_els_abort'ed ELS cmds */ 2033 if (!lpfc_error_lost_link(irsp)) 2034 lpfc_disc_state_machine(vport, ndlp, cmdiocb, 2035 NLP_EVT_CMPL_PLOGI); 2036 } else { 2037 /* Good status, call state machine */ 2038 prsp = list_entry(((struct lpfc_dmabuf *) 2039 cmdiocb->context2)->list.next, 2040 struct lpfc_dmabuf, list); 2041 ndlp = lpfc_plogi_confirm_nport(phba, prsp->virt, ndlp); 2042 lpfc_disc_state_machine(vport, ndlp, cmdiocb, 2043 NLP_EVT_CMPL_PLOGI); 2044 } 2045 2046 if (disc && vport->num_disc_nodes) { 2047 /* Check to see if there are more PLOGIs to be sent */ 2048 lpfc_more_plogi(vport); 2049 2050 if (vport->num_disc_nodes == 0) { 2051 spin_lock_irq(shost->host_lock); 2052 vport->fc_flag &= ~FC_NDISC_ACTIVE; 2053 spin_unlock_irq(shost->host_lock); 2054 2055 lpfc_can_disctmo(vport); 2056 lpfc_end_rscn(vport); 2057 } 2058 } 2059 2060 out: 2061 lpfc_els_free_iocb(phba, cmdiocb); 2062 return; 2063 } 2064 2065 /** 2066 * lpfc_issue_els_plogi - Issue an plogi iocb command for a vport 2067 * @vport: pointer to a host virtual N_Port data structure. 2068 * @did: destination port identifier. 2069 * @retry: number of retries to the command IOCB. 2070 * 2071 * This routine issues a Port Login (PLOGI) command to a remote N_Port 2072 * (with the @did) for a @vport. Before issuing a PLOGI to a remote N_Port, 2073 * the ndlp with the remote N_Port DID must exist on the @vport's ndlp list. 2074 * This routine constructs the proper feilds of the PLOGI IOCB and invokes 2075 * the lpfc_sli_issue_iocb() routine to send out PLOGI ELS command. 2076 * 2077 * Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp 2078 * will be incremented by 1 for holding the ndlp and the reference to ndlp 2079 * will be stored into the context1 field of the IOCB for the completion 2080 * callback function to the PLOGI ELS command. 2081 * 2082 * Return code 2083 * 0 - Successfully issued a plogi for @vport 2084 * 1 - failed to issue a plogi for @vport 2085 **/ 2086 int 2087 lpfc_issue_els_plogi(struct lpfc_vport *vport, uint32_t did, uint8_t retry) 2088 { 2089 struct lpfc_hba *phba = vport->phba; 2090 struct Scsi_Host *shost; 2091 struct serv_parm *sp; 2092 struct lpfc_nodelist *ndlp; 2093 struct lpfc_iocbq *elsiocb; 2094 uint8_t *pcmd; 2095 uint16_t cmdsize; 2096 int ret; 2097 2098 ndlp = lpfc_findnode_did(vport, did); 2099 2100 if (ndlp) { 2101 /* Defer the processing of the issue PLOGI until after the 2102 * outstanding UNREG_RPI mbox command completes, unless we 2103 * are going offline. This logic does not apply for Fabric DIDs 2104 */ 2105 if ((ndlp->nlp_flag & NLP_UNREG_INP) && 2106 ((ndlp->nlp_DID & Fabric_DID_MASK) != Fabric_DID_MASK) && 2107 !(vport->fc_flag & FC_OFFLINE_MODE)) { 2108 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, 2109 "4110 Issue PLOGI x%x deferred " 2110 "on NPort x%x rpi x%x Data: %p\n", 2111 ndlp->nlp_defer_did, ndlp->nlp_DID, 2112 ndlp->nlp_rpi, ndlp); 2113 2114 /* We can only defer 1st PLOGI */ 2115 if (ndlp->nlp_defer_did == NLP_EVT_NOTHING_PENDING) 2116 ndlp->nlp_defer_did = did; 2117 return 0; 2118 } 2119 if (!NLP_CHK_NODE_ACT(ndlp)) 2120 ndlp = NULL; 2121 } 2122 2123 /* If ndlp is not NULL, we will bump the reference count on it */ 2124 cmdsize = (sizeof(uint32_t) + sizeof(struct serv_parm)); 2125 elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp, did, 2126 ELS_CMD_PLOGI); 2127 if (!elsiocb) 2128 return 1; 2129 2130 shost = lpfc_shost_from_vport(vport); 2131 spin_lock_irq(shost->host_lock); 2132 ndlp->nlp_flag &= ~NLP_FCP_PRLI_RJT; 2133 spin_unlock_irq(shost->host_lock); 2134 2135 pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt); 2136 2137 /* For PLOGI request, remainder of payload is service parameters */ 2138 *((uint32_t *) (pcmd)) = ELS_CMD_PLOGI; 2139 pcmd += sizeof(uint32_t); 2140 memcpy(pcmd, &vport->fc_sparam, sizeof(struct serv_parm)); 2141 sp = (struct serv_parm *) pcmd; 2142 2143 /* 2144 * If we are a N-port connected to a Fabric, fix-up paramm's so logins 2145 * to device on remote loops work. 2146 */ 2147 if ((vport->fc_flag & FC_FABRIC) && !(vport->fc_flag & FC_PUBLIC_LOOP)) 2148 sp->cmn.altBbCredit = 1; 2149 2150 if (sp->cmn.fcphLow < FC_PH_4_3) 2151 sp->cmn.fcphLow = FC_PH_4_3; 2152 2153 if (sp->cmn.fcphHigh < FC_PH3) 2154 sp->cmn.fcphHigh = FC_PH3; 2155 2156 sp->cmn.valid_vendor_ver_level = 0; 2157 memset(sp->un.vendorVersion, 0, sizeof(sp->un.vendorVersion)); 2158 sp->cmn.bbRcvSizeMsb &= 0xF; 2159 2160 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, 2161 "Issue PLOGI: did:x%x", 2162 did, 0, 0); 2163 2164 /* If our firmware supports this feature, convey that 2165 * information to the target using the vendor specific field. 2166 */ 2167 if (phba->sli.sli_flag & LPFC_SLI_SUPPRESS_RSP) { 2168 sp->cmn.valid_vendor_ver_level = 1; 2169 sp->un.vv.vid = cpu_to_be32(LPFC_VV_EMLX_ID); 2170 sp->un.vv.flags = cpu_to_be32(LPFC_VV_SUPPRESS_RSP); 2171 } 2172 2173 phba->fc_stat.elsXmitPLOGI++; 2174 elsiocb->iocb_cmpl = lpfc_cmpl_els_plogi; 2175 ret = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0); 2176 2177 if (ret == IOCB_ERROR) { 2178 lpfc_els_free_iocb(phba, elsiocb); 2179 return 1; 2180 } 2181 return 0; 2182 } 2183 2184 /** 2185 * lpfc_cmpl_els_prli - Completion callback function for prli 2186 * @phba: pointer to lpfc hba data structure. 2187 * @cmdiocb: pointer to lpfc command iocb data structure. 2188 * @rspiocb: pointer to lpfc response iocb data structure. 2189 * 2190 * This routine is the completion callback function for a Process Login 2191 * (PRLI) ELS command. The PRLI response IOCB status is checked for error 2192 * status. If there is error status reported, PRLI retry shall be attempted 2193 * by invoking the lpfc_els_retry() routine. Otherwise, the state 2194 * NLP_EVT_CMPL_PRLI is sent to the Discover State Machine (DSM) for this 2195 * ndlp to mark the PRLI completion. 2196 **/ 2197 static void 2198 lpfc_cmpl_els_prli(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb, 2199 struct lpfc_iocbq *rspiocb) 2200 { 2201 struct lpfc_vport *vport = cmdiocb->vport; 2202 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 2203 IOCB_t *irsp; 2204 struct lpfc_nodelist *ndlp; 2205 2206 /* we pass cmdiocb to state machine which needs rspiocb as well */ 2207 cmdiocb->context_un.rsp_iocb = rspiocb; 2208 2209 irsp = &(rspiocb->iocb); 2210 ndlp = (struct lpfc_nodelist *) cmdiocb->context1; 2211 spin_lock_irq(shost->host_lock); 2212 ndlp->nlp_flag &= ~NLP_PRLI_SND; 2213 2214 /* Driver supports multiple FC4 types. Counters matter. */ 2215 vport->fc_prli_sent--; 2216 ndlp->fc4_prli_sent--; 2217 spin_unlock_irq(shost->host_lock); 2218 2219 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, 2220 "PRLI cmpl: status:x%x/x%x did:x%x", 2221 irsp->ulpStatus, irsp->un.ulpWord[4], 2222 ndlp->nlp_DID); 2223 2224 /* PRLI completes to NPort <nlp_DID> */ 2225 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, 2226 "0103 PRLI completes to NPort x%06x " 2227 "Data: x%x x%x x%x x%x\n", 2228 ndlp->nlp_DID, irsp->ulpStatus, irsp->un.ulpWord[4], 2229 vport->num_disc_nodes, ndlp->fc4_prli_sent); 2230 2231 /* Check to see if link went down during discovery */ 2232 if (lpfc_els_chk_latt(vport)) 2233 goto out; 2234 2235 if (irsp->ulpStatus) { 2236 /* Check for retry */ 2237 if (lpfc_els_retry(phba, cmdiocb, rspiocb)) { 2238 /* ELS command is being retried */ 2239 goto out; 2240 } 2241 2242 /* PRLI failed */ 2243 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS, 2244 "2754 PRLI failure DID:%06X Status:x%x/x%x, " 2245 "data: x%x\n", 2246 ndlp->nlp_DID, irsp->ulpStatus, 2247 irsp->un.ulpWord[4], ndlp->fc4_prli_sent); 2248 2249 /* Do not call DSM for lpfc_els_abort'ed ELS cmds */ 2250 if (lpfc_error_lost_link(irsp)) 2251 goto out; 2252 else 2253 lpfc_disc_state_machine(vport, ndlp, cmdiocb, 2254 NLP_EVT_CMPL_PRLI); 2255 } else { 2256 /* Good status, call state machine. However, if another 2257 * PRLI is outstanding, don't call the state machine 2258 * because final disposition to Mapped or Unmapped is 2259 * completed there. 2260 */ 2261 lpfc_disc_state_machine(vport, ndlp, cmdiocb, 2262 NLP_EVT_CMPL_PRLI); 2263 } 2264 2265 out: 2266 lpfc_els_free_iocb(phba, cmdiocb); 2267 return; 2268 } 2269 2270 /** 2271 * lpfc_issue_els_prli - Issue a prli iocb command for a vport 2272 * @vport: pointer to a host virtual N_Port data structure. 2273 * @ndlp: pointer to a node-list data structure. 2274 * @retry: number of retries to the command IOCB. 2275 * 2276 * This routine issues a Process Login (PRLI) ELS command for the 2277 * @vport. The PRLI service parameters are set up in the payload of the 2278 * PRLI Request command and the pointer to lpfc_cmpl_els_prli() routine 2279 * is put to the IOCB completion callback func field before invoking the 2280 * routine lpfc_sli_issue_iocb() to send out PRLI command. 2281 * 2282 * Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp 2283 * will be incremented by 1 for holding the ndlp and the reference to ndlp 2284 * will be stored into the context1 field of the IOCB for the completion 2285 * callback function to the PRLI ELS command. 2286 * 2287 * Return code 2288 * 0 - successfully issued prli iocb command for @vport 2289 * 1 - failed to issue prli iocb command for @vport 2290 **/ 2291 int 2292 lpfc_issue_els_prli(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 2293 uint8_t retry) 2294 { 2295 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 2296 struct lpfc_hba *phba = vport->phba; 2297 PRLI *npr; 2298 struct lpfc_nvme_prli *npr_nvme; 2299 struct lpfc_iocbq *elsiocb; 2300 uint8_t *pcmd; 2301 uint16_t cmdsize; 2302 u32 local_nlp_type, elscmd; 2303 2304 /* 2305 * If we are in RSCN mode, the FC4 types supported from a 2306 * previous GFT_ID command may not be accurate. So, if we 2307 * are a NVME Initiator, always look for the possibility of 2308 * the remote NPort beng a NVME Target. 2309 */ 2310 if (phba->sli_rev == LPFC_SLI_REV4 && 2311 vport->fc_flag & FC_RSCN_MODE && 2312 vport->nvmei_support) 2313 ndlp->nlp_fc4_type |= NLP_FC4_NVME; 2314 local_nlp_type = ndlp->nlp_fc4_type; 2315 2316 /* This routine will issue 1 or 2 PRLIs, so zero all the ndlp 2317 * fields here before any of them can complete. 2318 */ 2319 ndlp->nlp_type &= ~(NLP_FCP_TARGET | NLP_FCP_INITIATOR); 2320 ndlp->nlp_type &= ~(NLP_NVME_TARGET | NLP_NVME_INITIATOR); 2321 ndlp->nlp_fcp_info &= ~NLP_FCP_2_DEVICE; 2322 ndlp->nlp_flag &= ~(NLP_FIRSTBURST | NLP_NPR_2B_DISC); 2323 ndlp->nvme_fb_size = 0; 2324 2325 send_next_prli: 2326 if (local_nlp_type & NLP_FC4_FCP) { 2327 /* Payload is 4 + 16 = 20 x14 bytes. */ 2328 cmdsize = (sizeof(uint32_t) + sizeof(PRLI)); 2329 elscmd = ELS_CMD_PRLI; 2330 } else if (local_nlp_type & NLP_FC4_NVME) { 2331 /* Payload is 4 + 20 = 24 x18 bytes. */ 2332 cmdsize = (sizeof(uint32_t) + sizeof(struct lpfc_nvme_prli)); 2333 elscmd = ELS_CMD_NVMEPRLI; 2334 } else { 2335 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, 2336 "3083 Unknown FC_TYPE x%x ndlp x%06x\n", 2337 ndlp->nlp_fc4_type, ndlp->nlp_DID); 2338 return 1; 2339 } 2340 2341 /* SLI3 ports don't support NVME. If this rport is a strict NVME 2342 * FC4 type, implicitly LOGO. 2343 */ 2344 if (phba->sli_rev == LPFC_SLI_REV3 && 2345 ndlp->nlp_fc4_type == NLP_FC4_NVME) { 2346 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, 2347 "3088 Rport fc4 type 0x%x not supported by SLI3 adapter\n", 2348 ndlp->nlp_type); 2349 lpfc_disc_state_machine(vport, ndlp, NULL, NLP_EVT_DEVICE_RM); 2350 return 1; 2351 } 2352 2353 elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp, 2354 ndlp->nlp_DID, elscmd); 2355 if (!elsiocb) 2356 return 1; 2357 2358 pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt); 2359 2360 /* For PRLI request, remainder of payload is service parameters */ 2361 memset(pcmd, 0, cmdsize); 2362 2363 if (local_nlp_type & NLP_FC4_FCP) { 2364 /* Remainder of payload is FCP PRLI parameter page. 2365 * Note: this data structure is defined as 2366 * BE/LE in the structure definition so no 2367 * byte swap call is made. 2368 */ 2369 *((uint32_t *)(pcmd)) = ELS_CMD_PRLI; 2370 pcmd += sizeof(uint32_t); 2371 npr = (PRLI *)pcmd; 2372 2373 /* 2374 * If our firmware version is 3.20 or later, 2375 * set the following bits for FC-TAPE support. 2376 */ 2377 if (phba->vpd.rev.feaLevelHigh >= 0x02) { 2378 npr->ConfmComplAllowed = 1; 2379 npr->Retry = 1; 2380 npr->TaskRetryIdReq = 1; 2381 } 2382 npr->estabImagePair = 1; 2383 npr->readXferRdyDis = 1; 2384 if (vport->cfg_first_burst_size) 2385 npr->writeXferRdyDis = 1; 2386 2387 /* For FCP support */ 2388 npr->prliType = PRLI_FCP_TYPE; 2389 npr->initiatorFunc = 1; 2390 elsiocb->iocb_flag |= LPFC_PRLI_FCP_REQ; 2391 2392 /* Remove FCP type - processed. */ 2393 local_nlp_type &= ~NLP_FC4_FCP; 2394 } else if (local_nlp_type & NLP_FC4_NVME) { 2395 /* Remainder of payload is NVME PRLI parameter page. 2396 * This data structure is the newer definition that 2397 * uses bf macros so a byte swap is required. 2398 */ 2399 *((uint32_t *)(pcmd)) = ELS_CMD_NVMEPRLI; 2400 pcmd += sizeof(uint32_t); 2401 npr_nvme = (struct lpfc_nvme_prli *)pcmd; 2402 bf_set(prli_type_code, npr_nvme, PRLI_NVME_TYPE); 2403 bf_set(prli_estabImagePair, npr_nvme, 0); /* Should be 0 */ 2404 2405 /* Only initiators request first burst. */ 2406 if ((phba->cfg_nvme_enable_fb) && 2407 !phba->nvmet_support) 2408 bf_set(prli_fba, npr_nvme, 1); 2409 2410 if (phba->nvmet_support) { 2411 bf_set(prli_tgt, npr_nvme, 1); 2412 bf_set(prli_disc, npr_nvme, 1); 2413 } else { 2414 bf_set(prli_init, npr_nvme, 1); 2415 bf_set(prli_conf, npr_nvme, 1); 2416 } 2417 2418 npr_nvme->word1 = cpu_to_be32(npr_nvme->word1); 2419 npr_nvme->word4 = cpu_to_be32(npr_nvme->word4); 2420 elsiocb->iocb_flag |= LPFC_PRLI_NVME_REQ; 2421 2422 /* Remove NVME type - processed. */ 2423 local_nlp_type &= ~NLP_FC4_NVME; 2424 } 2425 2426 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, 2427 "Issue PRLI: did:x%x", 2428 ndlp->nlp_DID, 0, 0); 2429 2430 phba->fc_stat.elsXmitPRLI++; 2431 elsiocb->iocb_cmpl = lpfc_cmpl_els_prli; 2432 spin_lock_irq(shost->host_lock); 2433 ndlp->nlp_flag |= NLP_PRLI_SND; 2434 2435 /* The vport counters are used for lpfc_scan_finished, but 2436 * the ndlp is used to track outstanding PRLIs for different 2437 * FC4 types. 2438 */ 2439 vport->fc_prli_sent++; 2440 ndlp->fc4_prli_sent++; 2441 spin_unlock_irq(shost->host_lock); 2442 if (lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0) == 2443 IOCB_ERROR) { 2444 spin_lock_irq(shost->host_lock); 2445 ndlp->nlp_flag &= ~NLP_PRLI_SND; 2446 spin_unlock_irq(shost->host_lock); 2447 lpfc_els_free_iocb(phba, elsiocb); 2448 return 1; 2449 } 2450 2451 2452 /* The driver supports 2 FC4 types. Make sure 2453 * a PRLI is issued for all types before exiting. 2454 */ 2455 if (phba->sli_rev == LPFC_SLI_REV4 && 2456 local_nlp_type & (NLP_FC4_FCP | NLP_FC4_NVME)) 2457 goto send_next_prli; 2458 2459 return 0; 2460 } 2461 2462 /** 2463 * lpfc_rscn_disc - Perform rscn discovery for a vport 2464 * @vport: pointer to a host virtual N_Port data structure. 2465 * 2466 * This routine performs Registration State Change Notification (RSCN) 2467 * discovery for a @vport. If the @vport's node port recovery count is not 2468 * zero, it will invoke the lpfc_els_disc_plogi() to perform PLOGI for all 2469 * the nodes that need recovery. If none of the PLOGI were needed through 2470 * the lpfc_els_disc_plogi() routine, the lpfc_end_rscn() routine shall be 2471 * invoked to check and handle possible more RSCN came in during the period 2472 * of processing the current ones. 2473 **/ 2474 static void 2475 lpfc_rscn_disc(struct lpfc_vport *vport) 2476 { 2477 lpfc_can_disctmo(vport); 2478 2479 /* RSCN discovery */ 2480 /* go thru NPR nodes and issue ELS PLOGIs */ 2481 if (vport->fc_npr_cnt) 2482 if (lpfc_els_disc_plogi(vport)) 2483 return; 2484 2485 lpfc_end_rscn(vport); 2486 } 2487 2488 /** 2489 * lpfc_adisc_done - Complete the adisc phase of discovery 2490 * @vport: pointer to lpfc_vport hba data structure that finished all ADISCs. 2491 * 2492 * This function is called when the final ADISC is completed during discovery. 2493 * This function handles clearing link attention or issuing reg_vpi depending 2494 * on whether npiv is enabled. This function also kicks off the PLOGI phase of 2495 * discovery. 2496 * This function is called with no locks held. 2497 **/ 2498 static void 2499 lpfc_adisc_done(struct lpfc_vport *vport) 2500 { 2501 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 2502 struct lpfc_hba *phba = vport->phba; 2503 2504 /* 2505 * For NPIV, cmpl_reg_vpi will set port_state to READY, 2506 * and continue discovery. 2507 */ 2508 if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) && 2509 !(vport->fc_flag & FC_RSCN_MODE) && 2510 (phba->sli_rev < LPFC_SLI_REV4)) { 2511 /* The ADISCs are complete. Doesn't matter if they 2512 * succeeded or failed because the ADISC completion 2513 * routine guarantees to call the state machine and 2514 * the RPI is either unregistered (failed ADISC response) 2515 * or the RPI is still valid and the node is marked 2516 * mapped for a target. The exchanges should be in the 2517 * correct state. This code is specific to SLI3. 2518 */ 2519 lpfc_issue_clear_la(phba, vport); 2520 lpfc_issue_reg_vpi(phba, vport); 2521 return; 2522 } 2523 /* 2524 * For SLI2, we need to set port_state to READY 2525 * and continue discovery. 2526 */ 2527 if (vport->port_state < LPFC_VPORT_READY) { 2528 /* If we get here, there is nothing to ADISC */ 2529 lpfc_issue_clear_la(phba, vport); 2530 if (!(vport->fc_flag & FC_ABORT_DISCOVERY)) { 2531 vport->num_disc_nodes = 0; 2532 /* go thru NPR list, issue ELS PLOGIs */ 2533 if (vport->fc_npr_cnt) 2534 lpfc_els_disc_plogi(vport); 2535 if (!vport->num_disc_nodes) { 2536 spin_lock_irq(shost->host_lock); 2537 vport->fc_flag &= ~FC_NDISC_ACTIVE; 2538 spin_unlock_irq(shost->host_lock); 2539 lpfc_can_disctmo(vport); 2540 lpfc_end_rscn(vport); 2541 } 2542 } 2543 vport->port_state = LPFC_VPORT_READY; 2544 } else 2545 lpfc_rscn_disc(vport); 2546 } 2547 2548 /** 2549 * lpfc_more_adisc - Issue more adisc as needed 2550 * @vport: pointer to a host virtual N_Port data structure. 2551 * 2552 * This routine determines whether there are more ndlps on a @vport 2553 * node list need to have Address Discover (ADISC) issued. If so, it will 2554 * invoke the lpfc_els_disc_adisc() routine to issue ADISC on the @vport's 2555 * remaining nodes which need to have ADISC sent. 2556 **/ 2557 void 2558 lpfc_more_adisc(struct lpfc_vport *vport) 2559 { 2560 if (vport->num_disc_nodes) 2561 vport->num_disc_nodes--; 2562 /* Continue discovery with <num_disc_nodes> ADISCs to go */ 2563 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, 2564 "0210 Continue discovery with %d ADISCs to go " 2565 "Data: x%x x%x x%x\n", 2566 vport->num_disc_nodes, vport->fc_adisc_cnt, 2567 vport->fc_flag, vport->port_state); 2568 /* Check to see if there are more ADISCs to be sent */ 2569 if (vport->fc_flag & FC_NLP_MORE) { 2570 lpfc_set_disctmo(vport); 2571 /* go thru NPR nodes and issue any remaining ELS ADISCs */ 2572 lpfc_els_disc_adisc(vport); 2573 } 2574 if (!vport->num_disc_nodes) 2575 lpfc_adisc_done(vport); 2576 return; 2577 } 2578 2579 /** 2580 * lpfc_cmpl_els_adisc - Completion callback function for adisc 2581 * @phba: pointer to lpfc hba data structure. 2582 * @cmdiocb: pointer to lpfc command iocb data structure. 2583 * @rspiocb: pointer to lpfc response iocb data structure. 2584 * 2585 * This routine is the completion function for issuing the Address Discover 2586 * (ADISC) command. It first checks to see whether link went down during 2587 * the discovery process. If so, the node will be marked as node port 2588 * recovery for issuing discover IOCB by the link attention handler and 2589 * exit. Otherwise, the response status is checked. If error was reported 2590 * in the response status, the ADISC command shall be retried by invoking 2591 * the lpfc_els_retry() routine. Otherwise, if no error was reported in 2592 * the response status, the state machine is invoked to set transition 2593 * with respect to NLP_EVT_CMPL_ADISC event. 2594 **/ 2595 static void 2596 lpfc_cmpl_els_adisc(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb, 2597 struct lpfc_iocbq *rspiocb) 2598 { 2599 struct lpfc_vport *vport = cmdiocb->vport; 2600 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 2601 IOCB_t *irsp; 2602 struct lpfc_nodelist *ndlp; 2603 int disc; 2604 2605 /* we pass cmdiocb to state machine which needs rspiocb as well */ 2606 cmdiocb->context_un.rsp_iocb = rspiocb; 2607 2608 irsp = &(rspiocb->iocb); 2609 ndlp = (struct lpfc_nodelist *) cmdiocb->context1; 2610 2611 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, 2612 "ADISC cmpl: status:x%x/x%x did:x%x", 2613 irsp->ulpStatus, irsp->un.ulpWord[4], 2614 ndlp->nlp_DID); 2615 2616 /* Since ndlp can be freed in the disc state machine, note if this node 2617 * is being used during discovery. 2618 */ 2619 spin_lock_irq(shost->host_lock); 2620 disc = (ndlp->nlp_flag & NLP_NPR_2B_DISC); 2621 ndlp->nlp_flag &= ~(NLP_ADISC_SND | NLP_NPR_2B_DISC); 2622 spin_unlock_irq(shost->host_lock); 2623 /* ADISC completes to NPort <nlp_DID> */ 2624 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, 2625 "0104 ADISC completes to NPort x%x " 2626 "Data: x%x x%x x%x x%x x%x\n", 2627 ndlp->nlp_DID, irsp->ulpStatus, irsp->un.ulpWord[4], 2628 irsp->ulpTimeout, disc, vport->num_disc_nodes); 2629 /* Check to see if link went down during discovery */ 2630 if (lpfc_els_chk_latt(vport)) { 2631 spin_lock_irq(shost->host_lock); 2632 ndlp->nlp_flag |= NLP_NPR_2B_DISC; 2633 spin_unlock_irq(shost->host_lock); 2634 goto out; 2635 } 2636 2637 if (irsp->ulpStatus) { 2638 /* Check for retry */ 2639 if (lpfc_els_retry(phba, cmdiocb, rspiocb)) { 2640 /* ELS command is being retried */ 2641 if (disc) { 2642 spin_lock_irq(shost->host_lock); 2643 ndlp->nlp_flag |= NLP_NPR_2B_DISC; 2644 spin_unlock_irq(shost->host_lock); 2645 lpfc_set_disctmo(vport); 2646 } 2647 goto out; 2648 } 2649 /* ADISC failed */ 2650 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS, 2651 "2755 ADISC failure DID:%06X Status:x%x/x%x\n", 2652 ndlp->nlp_DID, irsp->ulpStatus, 2653 irsp->un.ulpWord[4]); 2654 /* Do not call DSM for lpfc_els_abort'ed ELS cmds */ 2655 if (!lpfc_error_lost_link(irsp)) 2656 lpfc_disc_state_machine(vport, ndlp, cmdiocb, 2657 NLP_EVT_CMPL_ADISC); 2658 } else 2659 /* Good status, call state machine */ 2660 lpfc_disc_state_machine(vport, ndlp, cmdiocb, 2661 NLP_EVT_CMPL_ADISC); 2662 2663 /* Check to see if there are more ADISCs to be sent */ 2664 if (disc && vport->num_disc_nodes) 2665 lpfc_more_adisc(vport); 2666 out: 2667 lpfc_els_free_iocb(phba, cmdiocb); 2668 return; 2669 } 2670 2671 /** 2672 * lpfc_issue_els_adisc - Issue an address discover iocb to an node on a vport 2673 * @vport: pointer to a virtual N_Port data structure. 2674 * @ndlp: pointer to a node-list data structure. 2675 * @retry: number of retries to the command IOCB. 2676 * 2677 * This routine issues an Address Discover (ADISC) for an @ndlp on a 2678 * @vport. It prepares the payload of the ADISC ELS command, updates the 2679 * and states of the ndlp, and invokes the lpfc_sli_issue_iocb() routine 2680 * to issue the ADISC ELS command. 2681 * 2682 * Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp 2683 * will be incremented by 1 for holding the ndlp and the reference to ndlp 2684 * will be stored into the context1 field of the IOCB for the completion 2685 * callback function to the ADISC ELS command. 2686 * 2687 * Return code 2688 * 0 - successfully issued adisc 2689 * 1 - failed to issue adisc 2690 **/ 2691 int 2692 lpfc_issue_els_adisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 2693 uint8_t retry) 2694 { 2695 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 2696 struct lpfc_hba *phba = vport->phba; 2697 ADISC *ap; 2698 struct lpfc_iocbq *elsiocb; 2699 uint8_t *pcmd; 2700 uint16_t cmdsize; 2701 2702 cmdsize = (sizeof(uint32_t) + sizeof(ADISC)); 2703 elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp, 2704 ndlp->nlp_DID, ELS_CMD_ADISC); 2705 if (!elsiocb) 2706 return 1; 2707 2708 pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt); 2709 2710 /* For ADISC request, remainder of payload is service parameters */ 2711 *((uint32_t *) (pcmd)) = ELS_CMD_ADISC; 2712 pcmd += sizeof(uint32_t); 2713 2714 /* Fill in ADISC payload */ 2715 ap = (ADISC *) pcmd; 2716 ap->hardAL_PA = phba->fc_pref_ALPA; 2717 memcpy(&ap->portName, &vport->fc_portname, sizeof(struct lpfc_name)); 2718 memcpy(&ap->nodeName, &vport->fc_nodename, sizeof(struct lpfc_name)); 2719 ap->DID = be32_to_cpu(vport->fc_myDID); 2720 2721 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, 2722 "Issue ADISC: did:x%x", 2723 ndlp->nlp_DID, 0, 0); 2724 2725 phba->fc_stat.elsXmitADISC++; 2726 elsiocb->iocb_cmpl = lpfc_cmpl_els_adisc; 2727 spin_lock_irq(shost->host_lock); 2728 ndlp->nlp_flag |= NLP_ADISC_SND; 2729 spin_unlock_irq(shost->host_lock); 2730 if (lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0) == 2731 IOCB_ERROR) { 2732 spin_lock_irq(shost->host_lock); 2733 ndlp->nlp_flag &= ~NLP_ADISC_SND; 2734 spin_unlock_irq(shost->host_lock); 2735 lpfc_els_free_iocb(phba, elsiocb); 2736 return 1; 2737 } 2738 return 0; 2739 } 2740 2741 /** 2742 * lpfc_cmpl_els_logo - Completion callback function for logo 2743 * @phba: pointer to lpfc hba data structure. 2744 * @cmdiocb: pointer to lpfc command iocb data structure. 2745 * @rspiocb: pointer to lpfc response iocb data structure. 2746 * 2747 * This routine is the completion function for issuing the ELS Logout (LOGO) 2748 * command. If no error status was reported from the LOGO response, the 2749 * state machine of the associated ndlp shall be invoked for transition with 2750 * respect to NLP_EVT_CMPL_LOGO event. Otherwise, if error status was reported, 2751 * the lpfc_els_retry() routine will be invoked to retry the LOGO command. 2752 **/ 2753 static void 2754 lpfc_cmpl_els_logo(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb, 2755 struct lpfc_iocbq *rspiocb) 2756 { 2757 struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) cmdiocb->context1; 2758 struct lpfc_vport *vport = ndlp->vport; 2759 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 2760 IOCB_t *irsp; 2761 struct lpfcMboxq *mbox; 2762 unsigned long flags; 2763 uint32_t skip_recovery = 0; 2764 2765 /* we pass cmdiocb to state machine which needs rspiocb as well */ 2766 cmdiocb->context_un.rsp_iocb = rspiocb; 2767 2768 irsp = &(rspiocb->iocb); 2769 spin_lock_irq(shost->host_lock); 2770 ndlp->nlp_flag &= ~NLP_LOGO_SND; 2771 spin_unlock_irq(shost->host_lock); 2772 2773 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, 2774 "LOGO cmpl: status:x%x/x%x did:x%x", 2775 irsp->ulpStatus, irsp->un.ulpWord[4], 2776 ndlp->nlp_DID); 2777 2778 /* LOGO completes to NPort <nlp_DID> */ 2779 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, 2780 "0105 LOGO completes to NPort x%x " 2781 "Data: x%x x%x x%x x%x\n", 2782 ndlp->nlp_DID, irsp->ulpStatus, irsp->un.ulpWord[4], 2783 irsp->ulpTimeout, vport->num_disc_nodes); 2784 2785 if (lpfc_els_chk_latt(vport)) { 2786 skip_recovery = 1; 2787 goto out; 2788 } 2789 2790 /* Check to see if link went down during discovery */ 2791 if (ndlp->nlp_flag & NLP_TARGET_REMOVE) { 2792 /* NLP_EVT_DEVICE_RM should unregister the RPI 2793 * which should abort all outstanding IOs. 2794 */ 2795 lpfc_disc_state_machine(vport, ndlp, cmdiocb, 2796 NLP_EVT_DEVICE_RM); 2797 skip_recovery = 1; 2798 goto out; 2799 } 2800 2801 /* The LOGO will not be retried on failure. A LOGO was 2802 * issued to the remote rport and a ACC or RJT or no Answer are 2803 * all acceptable. Note the failure and move forward with 2804 * discovery. The PLOGI will retry. 2805 */ 2806 if (irsp->ulpStatus) { 2807 /* LOGO failed */ 2808 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS, 2809 "2756 LOGO failure, No Retry DID:%06X Status:x%x/x%x\n", 2810 ndlp->nlp_DID, irsp->ulpStatus, 2811 irsp->un.ulpWord[4]); 2812 /* Do not call DSM for lpfc_els_abort'ed ELS cmds */ 2813 if (lpfc_error_lost_link(irsp)) { 2814 skip_recovery = 1; 2815 goto out; 2816 } 2817 } 2818 2819 /* Call state machine. This will unregister the rpi if needed. */ 2820 lpfc_disc_state_machine(vport, ndlp, cmdiocb, NLP_EVT_CMPL_LOGO); 2821 2822 out: 2823 lpfc_els_free_iocb(phba, cmdiocb); 2824 /* If we are in pt2pt mode, we could rcv new S_ID on PLOGI */ 2825 if ((vport->fc_flag & FC_PT2PT) && 2826 !(vport->fc_flag & FC_PT2PT_PLOGI)) { 2827 phba->pport->fc_myDID = 0; 2828 2829 if ((vport->cfg_enable_fc4_type == LPFC_ENABLE_BOTH) || 2830 (vport->cfg_enable_fc4_type == LPFC_ENABLE_NVME)) { 2831 if (phba->nvmet_support) 2832 lpfc_nvmet_update_targetport(phba); 2833 else 2834 lpfc_nvme_update_localport(phba->pport); 2835 } 2836 2837 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 2838 if (mbox) { 2839 lpfc_config_link(phba, mbox); 2840 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl; 2841 mbox->vport = vport; 2842 if (lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT) == 2843 MBX_NOT_FINISHED) { 2844 mempool_free(mbox, phba->mbox_mem_pool); 2845 skip_recovery = 1; 2846 } 2847 } 2848 } 2849 2850 /* 2851 * If the node is a target, the handling attempts to recover the port. 2852 * For any other port type, the rpi is unregistered as an implicit 2853 * LOGO. 2854 */ 2855 if (ndlp->nlp_type & (NLP_FCP_TARGET | NLP_NVME_TARGET) && 2856 skip_recovery == 0) { 2857 lpfc_cancel_retry_delay_tmo(vport, ndlp); 2858 spin_lock_irqsave(shost->host_lock, flags); 2859 ndlp->nlp_flag |= NLP_NPR_2B_DISC; 2860 spin_unlock_irqrestore(shost->host_lock, flags); 2861 2862 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, 2863 "3187 LOGO completes to NPort x%x: Start " 2864 "Recovery Data: x%x x%x x%x x%x\n", 2865 ndlp->nlp_DID, irsp->ulpStatus, 2866 irsp->un.ulpWord[4], irsp->ulpTimeout, 2867 vport->num_disc_nodes); 2868 lpfc_disc_start(vport); 2869 } 2870 return; 2871 } 2872 2873 /** 2874 * lpfc_issue_els_logo - Issue a logo to an node on a vport 2875 * @vport: pointer to a virtual N_Port data structure. 2876 * @ndlp: pointer to a node-list data structure. 2877 * @retry: number of retries to the command IOCB. 2878 * 2879 * This routine constructs and issues an ELS Logout (LOGO) iocb command 2880 * to a remote node, referred by an @ndlp on a @vport. It constructs the 2881 * payload of the IOCB, properly sets up the @ndlp state, and invokes the 2882 * lpfc_sli_issue_iocb() routine to send out the LOGO ELS command. 2883 * 2884 * Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp 2885 * will be incremented by 1 for holding the ndlp and the reference to ndlp 2886 * will be stored into the context1 field of the IOCB for the completion 2887 * callback function to the LOGO ELS command. 2888 * 2889 * Callers of this routine are expected to unregister the RPI first 2890 * 2891 * Return code 2892 * 0 - successfully issued logo 2893 * 1 - failed to issue logo 2894 **/ 2895 int 2896 lpfc_issue_els_logo(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 2897 uint8_t retry) 2898 { 2899 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 2900 struct lpfc_hba *phba = vport->phba; 2901 struct lpfc_iocbq *elsiocb; 2902 uint8_t *pcmd; 2903 uint16_t cmdsize; 2904 int rc; 2905 2906 spin_lock_irq(shost->host_lock); 2907 if (ndlp->nlp_flag & NLP_LOGO_SND) { 2908 spin_unlock_irq(shost->host_lock); 2909 return 0; 2910 } 2911 spin_unlock_irq(shost->host_lock); 2912 2913 cmdsize = (2 * sizeof(uint32_t)) + sizeof(struct lpfc_name); 2914 elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp, 2915 ndlp->nlp_DID, ELS_CMD_LOGO); 2916 if (!elsiocb) 2917 return 1; 2918 2919 pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt); 2920 *((uint32_t *) (pcmd)) = ELS_CMD_LOGO; 2921 pcmd += sizeof(uint32_t); 2922 2923 /* Fill in LOGO payload */ 2924 *((uint32_t *) (pcmd)) = be32_to_cpu(vport->fc_myDID); 2925 pcmd += sizeof(uint32_t); 2926 memcpy(pcmd, &vport->fc_portname, sizeof(struct lpfc_name)); 2927 2928 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, 2929 "Issue LOGO: did:x%x", 2930 ndlp->nlp_DID, 0, 0); 2931 2932 phba->fc_stat.elsXmitLOGO++; 2933 elsiocb->iocb_cmpl = lpfc_cmpl_els_logo; 2934 spin_lock_irq(shost->host_lock); 2935 ndlp->nlp_flag |= NLP_LOGO_SND; 2936 ndlp->nlp_flag &= ~NLP_ISSUE_LOGO; 2937 spin_unlock_irq(shost->host_lock); 2938 rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0); 2939 if (rc == IOCB_ERROR) { 2940 spin_lock_irq(shost->host_lock); 2941 ndlp->nlp_flag &= ~NLP_LOGO_SND; 2942 spin_unlock_irq(shost->host_lock); 2943 lpfc_els_free_iocb(phba, elsiocb); 2944 return 1; 2945 } 2946 2947 spin_lock_irq(shost->host_lock); 2948 ndlp->nlp_prev_state = ndlp->nlp_state; 2949 spin_unlock_irq(shost->host_lock); 2950 lpfc_nlp_set_state(vport, ndlp, NLP_STE_LOGO_ISSUE); 2951 return 0; 2952 } 2953 2954 /** 2955 * lpfc_cmpl_els_cmd - Completion callback function for generic els command 2956 * @phba: pointer to lpfc hba data structure. 2957 * @cmdiocb: pointer to lpfc command iocb data structure. 2958 * @rspiocb: pointer to lpfc response iocb data structure. 2959 * 2960 * This routine is a generic completion callback function for ELS commands. 2961 * Specifically, it is the callback function which does not need to perform 2962 * any command specific operations. It is currently used by the ELS command 2963 * issuing routines for the ELS State Change Request (SCR), 2964 * lpfc_issue_els_scr(), and the ELS Fibre Channel Address Resolution 2965 * Protocol Response (FARPR) routine, lpfc_issue_els_farpr(). Other than 2966 * certain debug loggings, this callback function simply invokes the 2967 * lpfc_els_chk_latt() routine to check whether link went down during the 2968 * discovery process. 2969 **/ 2970 static void 2971 lpfc_cmpl_els_cmd(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb, 2972 struct lpfc_iocbq *rspiocb) 2973 { 2974 struct lpfc_vport *vport = cmdiocb->vport; 2975 IOCB_t *irsp; 2976 2977 irsp = &rspiocb->iocb; 2978 2979 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, 2980 "ELS cmd cmpl: status:x%x/x%x did:x%x", 2981 irsp->ulpStatus, irsp->un.ulpWord[4], 2982 irsp->un.elsreq64.remoteID); 2983 /* ELS cmd tag <ulpIoTag> completes */ 2984 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, 2985 "0106 ELS cmd tag x%x completes Data: x%x x%x x%x\n", 2986 irsp->ulpIoTag, irsp->ulpStatus, 2987 irsp->un.ulpWord[4], irsp->ulpTimeout); 2988 /* Check to see if link went down during discovery */ 2989 lpfc_els_chk_latt(vport); 2990 lpfc_els_free_iocb(phba, cmdiocb); 2991 return; 2992 } 2993 2994 /** 2995 * lpfc_issue_els_scr - Issue a scr to an node on a vport 2996 * @vport: pointer to a host virtual N_Port data structure. 2997 * @nportid: N_Port identifier to the remote node. 2998 * @retry: number of retries to the command IOCB. 2999 * 3000 * This routine issues a State Change Request (SCR) to a fabric node 3001 * on a @vport. The remote node @nportid is passed into the function. It 3002 * first search the @vport node list to find the matching ndlp. If no such 3003 * ndlp is found, a new ndlp shall be created for this (SCR) purpose. An 3004 * IOCB is allocated, payload prepared, and the lpfc_sli_issue_iocb() 3005 * routine is invoked to send the SCR IOCB. 3006 * 3007 * Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp 3008 * will be incremented by 1 for holding the ndlp and the reference to ndlp 3009 * will be stored into the context1 field of the IOCB for the completion 3010 * callback function to the SCR ELS command. 3011 * 3012 * Return code 3013 * 0 - Successfully issued scr command 3014 * 1 - Failed to issue scr command 3015 **/ 3016 int 3017 lpfc_issue_els_scr(struct lpfc_vport *vport, uint32_t nportid, uint8_t retry) 3018 { 3019 struct lpfc_hba *phba = vport->phba; 3020 struct lpfc_iocbq *elsiocb; 3021 uint8_t *pcmd; 3022 uint16_t cmdsize; 3023 struct lpfc_nodelist *ndlp; 3024 3025 cmdsize = (sizeof(uint32_t) + sizeof(SCR)); 3026 3027 ndlp = lpfc_findnode_did(vport, nportid); 3028 if (!ndlp) { 3029 ndlp = lpfc_nlp_init(vport, nportid); 3030 if (!ndlp) 3031 return 1; 3032 lpfc_enqueue_node(vport, ndlp); 3033 } else if (!NLP_CHK_NODE_ACT(ndlp)) { 3034 ndlp = lpfc_enable_node(vport, ndlp, NLP_STE_UNUSED_NODE); 3035 if (!ndlp) 3036 return 1; 3037 } 3038 3039 elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp, 3040 ndlp->nlp_DID, ELS_CMD_SCR); 3041 3042 if (!elsiocb) { 3043 /* This will trigger the release of the node just 3044 * allocated 3045 */ 3046 lpfc_nlp_put(ndlp); 3047 return 1; 3048 } 3049 3050 pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt); 3051 3052 *((uint32_t *) (pcmd)) = ELS_CMD_SCR; 3053 pcmd += sizeof(uint32_t); 3054 3055 /* For SCR, remainder of payload is SCR parameter page */ 3056 memset(pcmd, 0, sizeof(SCR)); 3057 ((SCR *) pcmd)->Function = SCR_FUNC_FULL; 3058 3059 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, 3060 "Issue SCR: did:x%x", 3061 ndlp->nlp_DID, 0, 0); 3062 3063 phba->fc_stat.elsXmitSCR++; 3064 elsiocb->iocb_cmpl = lpfc_cmpl_els_cmd; 3065 if (lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0) == 3066 IOCB_ERROR) { 3067 /* The additional lpfc_nlp_put will cause the following 3068 * lpfc_els_free_iocb routine to trigger the rlease of 3069 * the node. 3070 */ 3071 lpfc_nlp_put(ndlp); 3072 lpfc_els_free_iocb(phba, elsiocb); 3073 return 1; 3074 } 3075 /* This will cause the callback-function lpfc_cmpl_els_cmd to 3076 * trigger the release of node. 3077 */ 3078 if (!(vport->fc_flag & FC_PT2PT)) 3079 lpfc_nlp_put(ndlp); 3080 return 0; 3081 } 3082 3083 /** 3084 * lpfc_issue_els_rscn - Issue an RSCN to the Fabric Controller (Fabric) 3085 * or the other nport (pt2pt). 3086 * @vport: pointer to a host virtual N_Port data structure. 3087 * @retry: number of retries to the command IOCB. 3088 * 3089 * This routine issues a RSCN to the Fabric Controller (DID 0xFFFFFD) 3090 * when connected to a fabric, or to the remote port when connected 3091 * in point-to-point mode. When sent to the Fabric Controller, it will 3092 * replay the RSCN to registered recipients. 3093 * 3094 * Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp 3095 * will be incremented by 1 for holding the ndlp and the reference to ndlp 3096 * will be stored into the context1 field of the IOCB for the completion 3097 * callback function to the RSCN ELS command. 3098 * 3099 * Return code 3100 * 0 - Successfully issued RSCN command 3101 * 1 - Failed to issue RSCN command 3102 **/ 3103 int 3104 lpfc_issue_els_rscn(struct lpfc_vport *vport, uint8_t retry) 3105 { 3106 struct lpfc_hba *phba = vport->phba; 3107 struct lpfc_iocbq *elsiocb; 3108 struct lpfc_nodelist *ndlp; 3109 struct { 3110 struct fc_els_rscn rscn; 3111 struct fc_els_rscn_page portid; 3112 } *event; 3113 uint32_t nportid; 3114 uint16_t cmdsize = sizeof(*event); 3115 3116 /* Not supported for private loop */ 3117 if (phba->fc_topology == LPFC_TOPOLOGY_LOOP && 3118 !(vport->fc_flag & FC_PUBLIC_LOOP)) 3119 return 1; 3120 3121 if (vport->fc_flag & FC_PT2PT) { 3122 /* find any mapped nport - that would be the other nport */ 3123 ndlp = lpfc_findnode_mapped(vport); 3124 if (!ndlp) 3125 return 1; 3126 } else { 3127 nportid = FC_FID_FCTRL; 3128 /* find the fabric controller node */ 3129 ndlp = lpfc_findnode_did(vport, nportid); 3130 if (!ndlp) { 3131 /* if one didn't exist, make one */ 3132 ndlp = lpfc_nlp_init(vport, nportid); 3133 if (!ndlp) 3134 return 1; 3135 lpfc_enqueue_node(vport, ndlp); 3136 } else if (!NLP_CHK_NODE_ACT(ndlp)) { 3137 ndlp = lpfc_enable_node(vport, ndlp, 3138 NLP_STE_UNUSED_NODE); 3139 if (!ndlp) 3140 return 1; 3141 } 3142 } 3143 3144 elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp, 3145 ndlp->nlp_DID, ELS_CMD_RSCN_XMT); 3146 3147 if (!elsiocb) { 3148 /* This will trigger the release of the node just 3149 * allocated 3150 */ 3151 lpfc_nlp_put(ndlp); 3152 return 1; 3153 } 3154 3155 event = ((struct lpfc_dmabuf *)elsiocb->context2)->virt; 3156 3157 event->rscn.rscn_cmd = ELS_RSCN; 3158 event->rscn.rscn_page_len = sizeof(struct fc_els_rscn_page); 3159 event->rscn.rscn_plen = cpu_to_be16(cmdsize); 3160 3161 nportid = vport->fc_myDID; 3162 /* appears that page flags must be 0 for fabric to broadcast RSCN */ 3163 event->portid.rscn_page_flags = 0; 3164 event->portid.rscn_fid[0] = (nportid & 0x00FF0000) >> 16; 3165 event->portid.rscn_fid[1] = (nportid & 0x0000FF00) >> 8; 3166 event->portid.rscn_fid[2] = nportid & 0x000000FF; 3167 3168 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, 3169 "Issue RSCN: did:x%x", 3170 ndlp->nlp_DID, 0, 0); 3171 3172 phba->fc_stat.elsXmitRSCN++; 3173 elsiocb->iocb_cmpl = lpfc_cmpl_els_cmd; 3174 if (lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0) == 3175 IOCB_ERROR) { 3176 /* The additional lpfc_nlp_put will cause the following 3177 * lpfc_els_free_iocb routine to trigger the rlease of 3178 * the node. 3179 */ 3180 lpfc_nlp_put(ndlp); 3181 lpfc_els_free_iocb(phba, elsiocb); 3182 return 1; 3183 } 3184 /* This will cause the callback-function lpfc_cmpl_els_cmd to 3185 * trigger the release of node. 3186 */ 3187 if (!(vport->fc_flag & FC_PT2PT)) 3188 lpfc_nlp_put(ndlp); 3189 3190 return 0; 3191 } 3192 3193 /** 3194 * lpfc_issue_els_farpr - Issue a farp to an node on a vport 3195 * @vport: pointer to a host virtual N_Port data structure. 3196 * @nportid: N_Port identifier to the remote node. 3197 * @retry: number of retries to the command IOCB. 3198 * 3199 * This routine issues a Fibre Channel Address Resolution Response 3200 * (FARPR) to a node on a vport. The remote node N_Port identifier (@nportid) 3201 * is passed into the function. It first search the @vport node list to find 3202 * the matching ndlp. If no such ndlp is found, a new ndlp shall be created 3203 * for this (FARPR) purpose. An IOCB is allocated, payload prepared, and the 3204 * lpfc_sli_issue_iocb() routine is invoked to send the FARPR ELS command. 3205 * 3206 * Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp 3207 * will be incremented by 1 for holding the ndlp and the reference to ndlp 3208 * will be stored into the context1 field of the IOCB for the completion 3209 * callback function to the PARPR ELS command. 3210 * 3211 * Return code 3212 * 0 - Successfully issued farpr command 3213 * 1 - Failed to issue farpr command 3214 **/ 3215 static int 3216 lpfc_issue_els_farpr(struct lpfc_vport *vport, uint32_t nportid, uint8_t retry) 3217 { 3218 struct lpfc_hba *phba = vport->phba; 3219 struct lpfc_iocbq *elsiocb; 3220 FARP *fp; 3221 uint8_t *pcmd; 3222 uint32_t *lp; 3223 uint16_t cmdsize; 3224 struct lpfc_nodelist *ondlp; 3225 struct lpfc_nodelist *ndlp; 3226 3227 cmdsize = (sizeof(uint32_t) + sizeof(FARP)); 3228 3229 ndlp = lpfc_findnode_did(vport, nportid); 3230 if (!ndlp) { 3231 ndlp = lpfc_nlp_init(vport, nportid); 3232 if (!ndlp) 3233 return 1; 3234 lpfc_enqueue_node(vport, ndlp); 3235 } else if (!NLP_CHK_NODE_ACT(ndlp)) { 3236 ndlp = lpfc_enable_node(vport, ndlp, NLP_STE_UNUSED_NODE); 3237 if (!ndlp) 3238 return 1; 3239 } 3240 3241 elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp, 3242 ndlp->nlp_DID, ELS_CMD_RNID); 3243 if (!elsiocb) { 3244 /* This will trigger the release of the node just 3245 * allocated 3246 */ 3247 lpfc_nlp_put(ndlp); 3248 return 1; 3249 } 3250 3251 pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt); 3252 3253 *((uint32_t *) (pcmd)) = ELS_CMD_FARPR; 3254 pcmd += sizeof(uint32_t); 3255 3256 /* Fill in FARPR payload */ 3257 fp = (FARP *) (pcmd); 3258 memset(fp, 0, sizeof(FARP)); 3259 lp = (uint32_t *) pcmd; 3260 *lp++ = be32_to_cpu(nportid); 3261 *lp++ = be32_to_cpu(vport->fc_myDID); 3262 fp->Rflags = 0; 3263 fp->Mflags = (FARP_MATCH_PORT | FARP_MATCH_NODE); 3264 3265 memcpy(&fp->RportName, &vport->fc_portname, sizeof(struct lpfc_name)); 3266 memcpy(&fp->RnodeName, &vport->fc_nodename, sizeof(struct lpfc_name)); 3267 ondlp = lpfc_findnode_did(vport, nportid); 3268 if (ondlp && NLP_CHK_NODE_ACT(ondlp)) { 3269 memcpy(&fp->OportName, &ondlp->nlp_portname, 3270 sizeof(struct lpfc_name)); 3271 memcpy(&fp->OnodeName, &ondlp->nlp_nodename, 3272 sizeof(struct lpfc_name)); 3273 } 3274 3275 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, 3276 "Issue FARPR: did:x%x", 3277 ndlp->nlp_DID, 0, 0); 3278 3279 phba->fc_stat.elsXmitFARPR++; 3280 elsiocb->iocb_cmpl = lpfc_cmpl_els_cmd; 3281 if (lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0) == 3282 IOCB_ERROR) { 3283 /* The additional lpfc_nlp_put will cause the following 3284 * lpfc_els_free_iocb routine to trigger the release of 3285 * the node. 3286 */ 3287 lpfc_nlp_put(ndlp); 3288 lpfc_els_free_iocb(phba, elsiocb); 3289 return 1; 3290 } 3291 /* This will cause the callback-function lpfc_cmpl_els_cmd to 3292 * trigger the release of the node. 3293 */ 3294 lpfc_nlp_put(ndlp); 3295 return 0; 3296 } 3297 3298 /** 3299 * lpfc_cancel_retry_delay_tmo - Cancel the timer with delayed iocb-cmd retry 3300 * @vport: pointer to a host virtual N_Port data structure. 3301 * @nlp: pointer to a node-list data structure. 3302 * 3303 * This routine cancels the timer with a delayed IOCB-command retry for 3304 * a @vport's @ndlp. It stops the timer for the delayed function retrial and 3305 * removes the ELS retry event if it presents. In addition, if the 3306 * NLP_NPR_2B_DISC bit is set in the @nlp's nlp_flag bitmap, ADISC IOCB 3307 * commands are sent for the @vport's nodes that require issuing discovery 3308 * ADISC. 3309 **/ 3310 void 3311 lpfc_cancel_retry_delay_tmo(struct lpfc_vport *vport, struct lpfc_nodelist *nlp) 3312 { 3313 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 3314 struct lpfc_work_evt *evtp; 3315 3316 if (!(nlp->nlp_flag & NLP_DELAY_TMO)) 3317 return; 3318 spin_lock_irq(shost->host_lock); 3319 nlp->nlp_flag &= ~NLP_DELAY_TMO; 3320 spin_unlock_irq(shost->host_lock); 3321 del_timer_sync(&nlp->nlp_delayfunc); 3322 nlp->nlp_last_elscmd = 0; 3323 if (!list_empty(&nlp->els_retry_evt.evt_listp)) { 3324 list_del_init(&nlp->els_retry_evt.evt_listp); 3325 /* Decrement nlp reference count held for the delayed retry */ 3326 evtp = &nlp->els_retry_evt; 3327 lpfc_nlp_put((struct lpfc_nodelist *)evtp->evt_arg1); 3328 } 3329 if (nlp->nlp_flag & NLP_NPR_2B_DISC) { 3330 spin_lock_irq(shost->host_lock); 3331 nlp->nlp_flag &= ~NLP_NPR_2B_DISC; 3332 spin_unlock_irq(shost->host_lock); 3333 if (vport->num_disc_nodes) { 3334 if (vport->port_state < LPFC_VPORT_READY) { 3335 /* Check if there are more ADISCs to be sent */ 3336 lpfc_more_adisc(vport); 3337 } else { 3338 /* Check if there are more PLOGIs to be sent */ 3339 lpfc_more_plogi(vport); 3340 if (vport->num_disc_nodes == 0) { 3341 spin_lock_irq(shost->host_lock); 3342 vport->fc_flag &= ~FC_NDISC_ACTIVE; 3343 spin_unlock_irq(shost->host_lock); 3344 lpfc_can_disctmo(vport); 3345 lpfc_end_rscn(vport); 3346 } 3347 } 3348 } 3349 } 3350 return; 3351 } 3352 3353 /** 3354 * lpfc_els_retry_delay - Timer function with a ndlp delayed function timer 3355 * @ptr: holder for the pointer to the timer function associated data (ndlp). 3356 * 3357 * This routine is invoked by the ndlp delayed-function timer to check 3358 * whether there is any pending ELS retry event(s) with the node. If not, it 3359 * simply returns. Otherwise, if there is at least one ELS delayed event, it 3360 * adds the delayed events to the HBA work list and invokes the 3361 * lpfc_worker_wake_up() routine to wake up worker thread to process the 3362 * event. Note that lpfc_nlp_get() is called before posting the event to 3363 * the work list to hold reference count of ndlp so that it guarantees the 3364 * reference to ndlp will still be available when the worker thread gets 3365 * to the event associated with the ndlp. 3366 **/ 3367 void 3368 lpfc_els_retry_delay(struct timer_list *t) 3369 { 3370 struct lpfc_nodelist *ndlp = from_timer(ndlp, t, nlp_delayfunc); 3371 struct lpfc_vport *vport = ndlp->vport; 3372 struct lpfc_hba *phba = vport->phba; 3373 unsigned long flags; 3374 struct lpfc_work_evt *evtp = &ndlp->els_retry_evt; 3375 3376 spin_lock_irqsave(&phba->hbalock, flags); 3377 if (!list_empty(&evtp->evt_listp)) { 3378 spin_unlock_irqrestore(&phba->hbalock, flags); 3379 return; 3380 } 3381 3382 /* We need to hold the node by incrementing the reference 3383 * count until the queued work is done 3384 */ 3385 evtp->evt_arg1 = lpfc_nlp_get(ndlp); 3386 if (evtp->evt_arg1) { 3387 evtp->evt = LPFC_EVT_ELS_RETRY; 3388 list_add_tail(&evtp->evt_listp, &phba->work_list); 3389 lpfc_worker_wake_up(phba); 3390 } 3391 spin_unlock_irqrestore(&phba->hbalock, flags); 3392 return; 3393 } 3394 3395 /** 3396 * lpfc_els_retry_delay_handler - Work thread handler for ndlp delayed function 3397 * @ndlp: pointer to a node-list data structure. 3398 * 3399 * This routine is the worker-thread handler for processing the @ndlp delayed 3400 * event(s), posted by the lpfc_els_retry_delay() routine. It simply retrieves 3401 * the last ELS command from the associated ndlp and invokes the proper ELS 3402 * function according to the delayed ELS command to retry the command. 3403 **/ 3404 void 3405 lpfc_els_retry_delay_handler(struct lpfc_nodelist *ndlp) 3406 { 3407 struct lpfc_vport *vport = ndlp->vport; 3408 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 3409 uint32_t cmd, retry; 3410 3411 spin_lock_irq(shost->host_lock); 3412 cmd = ndlp->nlp_last_elscmd; 3413 ndlp->nlp_last_elscmd = 0; 3414 3415 if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) { 3416 spin_unlock_irq(shost->host_lock); 3417 return; 3418 } 3419 3420 ndlp->nlp_flag &= ~NLP_DELAY_TMO; 3421 spin_unlock_irq(shost->host_lock); 3422 /* 3423 * If a discovery event readded nlp_delayfunc after timer 3424 * firing and before processing the timer, cancel the 3425 * nlp_delayfunc. 3426 */ 3427 del_timer_sync(&ndlp->nlp_delayfunc); 3428 retry = ndlp->nlp_retry; 3429 ndlp->nlp_retry = 0; 3430 3431 switch (cmd) { 3432 case ELS_CMD_FLOGI: 3433 lpfc_issue_els_flogi(vport, ndlp, retry); 3434 break; 3435 case ELS_CMD_PLOGI: 3436 if (!lpfc_issue_els_plogi(vport, ndlp->nlp_DID, retry)) { 3437 ndlp->nlp_prev_state = ndlp->nlp_state; 3438 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE); 3439 } 3440 break; 3441 case ELS_CMD_ADISC: 3442 if (!lpfc_issue_els_adisc(vport, ndlp, retry)) { 3443 ndlp->nlp_prev_state = ndlp->nlp_state; 3444 lpfc_nlp_set_state(vport, ndlp, NLP_STE_ADISC_ISSUE); 3445 } 3446 break; 3447 case ELS_CMD_PRLI: 3448 case ELS_CMD_NVMEPRLI: 3449 if (!lpfc_issue_els_prli(vport, ndlp, retry)) { 3450 ndlp->nlp_prev_state = ndlp->nlp_state; 3451 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PRLI_ISSUE); 3452 } 3453 break; 3454 case ELS_CMD_LOGO: 3455 if (!lpfc_issue_els_logo(vport, ndlp, retry)) { 3456 ndlp->nlp_prev_state = ndlp->nlp_state; 3457 lpfc_nlp_set_state(vport, ndlp, NLP_STE_LOGO_ISSUE); 3458 } 3459 break; 3460 case ELS_CMD_FDISC: 3461 if (!(vport->fc_flag & FC_VPORT_NEEDS_INIT_VPI)) 3462 lpfc_issue_els_fdisc(vport, ndlp, retry); 3463 break; 3464 } 3465 return; 3466 } 3467 3468 /** 3469 * lpfc_link_reset - Issue link reset 3470 * @vport: pointer to a virtual N_Port data structure. 3471 * 3472 * This routine performs link reset by sending INIT_LINK mailbox command. 3473 * For SLI-3 adapter, link attention interrupt is enabled before issuing 3474 * INIT_LINK mailbox command. 3475 * 3476 * Return code 3477 * 0 - Link reset initiated successfully 3478 * 1 - Failed to initiate link reset 3479 **/ 3480 int 3481 lpfc_link_reset(struct lpfc_vport *vport) 3482 { 3483 struct lpfc_hba *phba = vport->phba; 3484 LPFC_MBOXQ_t *mbox; 3485 uint32_t control; 3486 int rc; 3487 3488 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS, 3489 "2851 Attempt link reset\n"); 3490 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 3491 if (!mbox) { 3492 lpfc_printf_log(phba, KERN_ERR, LOG_MBOX, 3493 "2852 Failed to allocate mbox memory"); 3494 return 1; 3495 } 3496 3497 /* Enable Link attention interrupts */ 3498 if (phba->sli_rev <= LPFC_SLI_REV3) { 3499 spin_lock_irq(&phba->hbalock); 3500 phba->sli.sli_flag |= LPFC_PROCESS_LA; 3501 control = readl(phba->HCregaddr); 3502 control |= HC_LAINT_ENA; 3503 writel(control, phba->HCregaddr); 3504 readl(phba->HCregaddr); /* flush */ 3505 spin_unlock_irq(&phba->hbalock); 3506 } 3507 3508 lpfc_init_link(phba, mbox, phba->cfg_topology, 3509 phba->cfg_link_speed); 3510 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl; 3511 mbox->vport = vport; 3512 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT); 3513 if ((rc != MBX_BUSY) && (rc != MBX_SUCCESS)) { 3514 lpfc_printf_log(phba, KERN_ERR, LOG_MBOX, 3515 "2853 Failed to issue INIT_LINK " 3516 "mbox command, rc:x%x\n", rc); 3517 mempool_free(mbox, phba->mbox_mem_pool); 3518 return 1; 3519 } 3520 3521 return 0; 3522 } 3523 3524 /** 3525 * lpfc_els_retry - Make retry decision on an els command iocb 3526 * @phba: pointer to lpfc hba data structure. 3527 * @cmdiocb: pointer to lpfc command iocb data structure. 3528 * @rspiocb: pointer to lpfc response iocb data structure. 3529 * 3530 * This routine makes a retry decision on an ELS command IOCB, which has 3531 * failed. The following ELS IOCBs use this function for retrying the command 3532 * when previously issued command responsed with error status: FLOGI, PLOGI, 3533 * PRLI, ADISC, LOGO, and FDISC. Based on the ELS command type and the 3534 * returned error status, it makes the decision whether a retry shall be 3535 * issued for the command, and whether a retry shall be made immediately or 3536 * delayed. In the former case, the corresponding ELS command issuing-function 3537 * is called to retry the command. In the later case, the ELS command shall 3538 * be posted to the ndlp delayed event and delayed function timer set to the 3539 * ndlp for the delayed command issusing. 3540 * 3541 * Return code 3542 * 0 - No retry of els command is made 3543 * 1 - Immediate or delayed retry of els command is made 3544 **/ 3545 static int 3546 lpfc_els_retry(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb, 3547 struct lpfc_iocbq *rspiocb) 3548 { 3549 struct lpfc_vport *vport = cmdiocb->vport; 3550 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 3551 IOCB_t *irsp = &rspiocb->iocb; 3552 struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) cmdiocb->context1; 3553 struct lpfc_dmabuf *pcmd = (struct lpfc_dmabuf *) cmdiocb->context2; 3554 uint32_t *elscmd; 3555 struct ls_rjt stat; 3556 int retry = 0, maxretry = lpfc_max_els_tries, delay = 0; 3557 int logerr = 0; 3558 uint32_t cmd = 0; 3559 uint32_t did; 3560 int link_reset = 0, rc; 3561 3562 3563 /* Note: context2 may be 0 for internal driver abort 3564 * of delays ELS command. 3565 */ 3566 3567 if (pcmd && pcmd->virt) { 3568 elscmd = (uint32_t *) (pcmd->virt); 3569 cmd = *elscmd++; 3570 } 3571 3572 if (ndlp && NLP_CHK_NODE_ACT(ndlp)) 3573 did = ndlp->nlp_DID; 3574 else { 3575 /* We should only hit this case for retrying PLOGI */ 3576 did = irsp->un.elsreq64.remoteID; 3577 ndlp = lpfc_findnode_did(vport, did); 3578 if ((!ndlp || !NLP_CHK_NODE_ACT(ndlp)) 3579 && (cmd != ELS_CMD_PLOGI)) 3580 return 1; 3581 } 3582 3583 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, 3584 "Retry ELS: wd7:x%x wd4:x%x did:x%x", 3585 *(((uint32_t *) irsp) + 7), irsp->un.ulpWord[4], ndlp->nlp_DID); 3586 3587 switch (irsp->ulpStatus) { 3588 case IOSTAT_FCP_RSP_ERROR: 3589 break; 3590 case IOSTAT_REMOTE_STOP: 3591 if (phba->sli_rev == LPFC_SLI_REV4) { 3592 /* This IO was aborted by the target, we don't 3593 * know the rxid and because we did not send the 3594 * ABTS we cannot generate and RRQ. 3595 */ 3596 lpfc_set_rrq_active(phba, ndlp, 3597 cmdiocb->sli4_lxritag, 0, 0); 3598 } 3599 break; 3600 case IOSTAT_LOCAL_REJECT: 3601 switch ((irsp->un.ulpWord[4] & IOERR_PARAM_MASK)) { 3602 case IOERR_LOOP_OPEN_FAILURE: 3603 if (cmd == ELS_CMD_FLOGI) { 3604 if (PCI_DEVICE_ID_HORNET == 3605 phba->pcidev->device) { 3606 phba->fc_topology = LPFC_TOPOLOGY_LOOP; 3607 phba->pport->fc_myDID = 0; 3608 phba->alpa_map[0] = 0; 3609 phba->alpa_map[1] = 0; 3610 } 3611 } 3612 if (cmd == ELS_CMD_PLOGI && cmdiocb->retry == 0) 3613 delay = 1000; 3614 retry = 1; 3615 break; 3616 3617 case IOERR_ILLEGAL_COMMAND: 3618 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS, 3619 "0124 Retry illegal cmd x%x " 3620 "retry:x%x delay:x%x\n", 3621 cmd, cmdiocb->retry, delay); 3622 retry = 1; 3623 /* All command's retry policy */ 3624 maxretry = 8; 3625 if (cmdiocb->retry > 2) 3626 delay = 1000; 3627 break; 3628 3629 case IOERR_NO_RESOURCES: 3630 logerr = 1; /* HBA out of resources */ 3631 retry = 1; 3632 if (cmdiocb->retry > 100) 3633 delay = 100; 3634 maxretry = 250; 3635 break; 3636 3637 case IOERR_ILLEGAL_FRAME: 3638 delay = 100; 3639 retry = 1; 3640 break; 3641 3642 case IOERR_INVALID_RPI: 3643 if (cmd == ELS_CMD_PLOGI && 3644 did == NameServer_DID) { 3645 /* Continue forever if plogi to */ 3646 /* the nameserver fails */ 3647 maxretry = 0; 3648 delay = 100; 3649 } 3650 retry = 1; 3651 break; 3652 3653 case IOERR_SEQUENCE_TIMEOUT: 3654 if (cmd == ELS_CMD_PLOGI && 3655 did == NameServer_DID && 3656 (cmdiocb->retry + 1) == maxretry) { 3657 /* Reset the Link */ 3658 link_reset = 1; 3659 break; 3660 } 3661 retry = 1; 3662 delay = 100; 3663 break; 3664 } 3665 break; 3666 3667 case IOSTAT_NPORT_RJT: 3668 case IOSTAT_FABRIC_RJT: 3669 if (irsp->un.ulpWord[4] & RJT_UNAVAIL_TEMP) { 3670 retry = 1; 3671 break; 3672 } 3673 break; 3674 3675 case IOSTAT_NPORT_BSY: 3676 case IOSTAT_FABRIC_BSY: 3677 logerr = 1; /* Fabric / Remote NPort out of resources */ 3678 retry = 1; 3679 break; 3680 3681 case IOSTAT_LS_RJT: 3682 stat.un.lsRjtError = be32_to_cpu(irsp->un.ulpWord[4]); 3683 /* Added for Vendor specifc support 3684 * Just keep retrying for these Rsn / Exp codes 3685 */ 3686 switch (stat.un.b.lsRjtRsnCode) { 3687 case LSRJT_UNABLE_TPC: 3688 /* The driver has a VALID PLOGI but the rport has 3689 * rejected the PRLI - can't do it now. Delay 3690 * for 1 second and try again - don't care about 3691 * the explanation. 3692 */ 3693 if (cmd == ELS_CMD_PRLI || cmd == ELS_CMD_NVMEPRLI) { 3694 delay = 1000; 3695 maxretry = lpfc_max_els_tries + 1; 3696 retry = 1; 3697 break; 3698 } 3699 3700 /* Legacy bug fix code for targets with PLOGI delays. */ 3701 if (stat.un.b.lsRjtRsnCodeExp == 3702 LSEXP_CMD_IN_PROGRESS) { 3703 if (cmd == ELS_CMD_PLOGI) { 3704 delay = 1000; 3705 maxretry = 48; 3706 } 3707 retry = 1; 3708 break; 3709 } 3710 if (stat.un.b.lsRjtRsnCodeExp == 3711 LSEXP_CANT_GIVE_DATA) { 3712 if (cmd == ELS_CMD_PLOGI) { 3713 delay = 1000; 3714 maxretry = 48; 3715 } 3716 retry = 1; 3717 break; 3718 } 3719 if (cmd == ELS_CMD_PLOGI) { 3720 delay = 1000; 3721 maxretry = lpfc_max_els_tries + 1; 3722 retry = 1; 3723 break; 3724 } 3725 if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) && 3726 (cmd == ELS_CMD_FDISC) && 3727 (stat.un.b.lsRjtRsnCodeExp == LSEXP_OUT_OF_RESOURCE)){ 3728 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS, 3729 "0125 FDISC Failed (x%x). " 3730 "Fabric out of resources\n", 3731 stat.un.lsRjtError); 3732 lpfc_vport_set_state(vport, 3733 FC_VPORT_NO_FABRIC_RSCS); 3734 } 3735 break; 3736 3737 case LSRJT_LOGICAL_BSY: 3738 if ((cmd == ELS_CMD_PLOGI) || 3739 (cmd == ELS_CMD_PRLI) || 3740 (cmd == ELS_CMD_NVMEPRLI)) { 3741 delay = 1000; 3742 maxretry = 48; 3743 } else if (cmd == ELS_CMD_FDISC) { 3744 /* FDISC retry policy */ 3745 maxretry = 48; 3746 if (cmdiocb->retry >= 32) 3747 delay = 1000; 3748 } 3749 retry = 1; 3750 break; 3751 3752 case LSRJT_LOGICAL_ERR: 3753 /* There are some cases where switches return this 3754 * error when they are not ready and should be returning 3755 * Logical Busy. We should delay every time. 3756 */ 3757 if (cmd == ELS_CMD_FDISC && 3758 stat.un.b.lsRjtRsnCodeExp == LSEXP_PORT_LOGIN_REQ) { 3759 maxretry = 3; 3760 delay = 1000; 3761 retry = 1; 3762 } else if (cmd == ELS_CMD_FLOGI && 3763 stat.un.b.lsRjtRsnCodeExp == 3764 LSEXP_NOTHING_MORE) { 3765 vport->fc_sparam.cmn.bbRcvSizeMsb &= 0xf; 3766 retry = 1; 3767 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS, 3768 "0820 FLOGI Failed (x%x). " 3769 "BBCredit Not Supported\n", 3770 stat.un.lsRjtError); 3771 } 3772 break; 3773 3774 case LSRJT_PROTOCOL_ERR: 3775 if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) && 3776 (cmd == ELS_CMD_FDISC) && 3777 ((stat.un.b.lsRjtRsnCodeExp == LSEXP_INVALID_PNAME) || 3778 (stat.un.b.lsRjtRsnCodeExp == LSEXP_INVALID_NPORT_ID)) 3779 ) { 3780 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS, 3781 "0122 FDISC Failed (x%x). " 3782 "Fabric Detected Bad WWN\n", 3783 stat.un.lsRjtError); 3784 lpfc_vport_set_state(vport, 3785 FC_VPORT_FABRIC_REJ_WWN); 3786 } 3787 break; 3788 case LSRJT_VENDOR_UNIQUE: 3789 if ((stat.un.b.vendorUnique == 0x45) && 3790 (cmd == ELS_CMD_FLOGI)) { 3791 goto out_retry; 3792 } 3793 break; 3794 case LSRJT_CMD_UNSUPPORTED: 3795 /* lpfc nvmet returns this type of LS_RJT when it 3796 * receives an FCP PRLI because lpfc nvmet only 3797 * support NVME. ELS request is terminated for FCP4 3798 * on this rport. 3799 */ 3800 if (stat.un.b.lsRjtRsnCodeExp == 3801 LSEXP_REQ_UNSUPPORTED && cmd == ELS_CMD_PRLI) { 3802 spin_lock_irq(shost->host_lock); 3803 ndlp->nlp_flag |= NLP_FCP_PRLI_RJT; 3804 spin_unlock_irq(shost->host_lock); 3805 retry = 0; 3806 goto out_retry; 3807 } 3808 break; 3809 } 3810 break; 3811 3812 case IOSTAT_INTERMED_RSP: 3813 case IOSTAT_BA_RJT: 3814 break; 3815 3816 default: 3817 break; 3818 } 3819 3820 if (link_reset) { 3821 rc = lpfc_link_reset(vport); 3822 if (rc) { 3823 /* Do not give up. Retry PLOGI one more time and attempt 3824 * link reset if PLOGI fails again. 3825 */ 3826 retry = 1; 3827 delay = 100; 3828 goto out_retry; 3829 } 3830 return 1; 3831 } 3832 3833 if (did == FDMI_DID) 3834 retry = 1; 3835 3836 if ((cmd == ELS_CMD_FLOGI) && 3837 (phba->fc_topology != LPFC_TOPOLOGY_LOOP) && 3838 !lpfc_error_lost_link(irsp)) { 3839 /* FLOGI retry policy */ 3840 retry = 1; 3841 /* retry FLOGI forever */ 3842 if (phba->link_flag != LS_LOOPBACK_MODE) 3843 maxretry = 0; 3844 else 3845 maxretry = 2; 3846 3847 if (cmdiocb->retry >= 100) 3848 delay = 5000; 3849 else if (cmdiocb->retry >= 32) 3850 delay = 1000; 3851 } else if ((cmd == ELS_CMD_FDISC) && !lpfc_error_lost_link(irsp)) { 3852 /* retry FDISCs every second up to devloss */ 3853 retry = 1; 3854 maxretry = vport->cfg_devloss_tmo; 3855 delay = 1000; 3856 } 3857 3858 cmdiocb->retry++; 3859 if (maxretry && (cmdiocb->retry >= maxretry)) { 3860 phba->fc_stat.elsRetryExceeded++; 3861 retry = 0; 3862 } 3863 3864 if ((vport->load_flag & FC_UNLOADING) != 0) 3865 retry = 0; 3866 3867 out_retry: 3868 if (retry) { 3869 if ((cmd == ELS_CMD_PLOGI) || (cmd == ELS_CMD_FDISC)) { 3870 /* Stop retrying PLOGI and FDISC if in FCF discovery */ 3871 if (phba->fcf.fcf_flag & FCF_DISCOVERY) { 3872 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, 3873 "2849 Stop retry ELS command " 3874 "x%x to remote NPORT x%x, " 3875 "Data: x%x x%x\n", cmd, did, 3876 cmdiocb->retry, delay); 3877 return 0; 3878 } 3879 } 3880 3881 /* Retry ELS command <elsCmd> to remote NPORT <did> */ 3882 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, 3883 "0107 Retry ELS command x%x to remote " 3884 "NPORT x%x Data: x%x x%x\n", 3885 cmd, did, cmdiocb->retry, delay); 3886 3887 if (((cmd == ELS_CMD_PLOGI) || (cmd == ELS_CMD_ADISC)) && 3888 ((irsp->ulpStatus != IOSTAT_LOCAL_REJECT) || 3889 ((irsp->un.ulpWord[4] & IOERR_PARAM_MASK) != 3890 IOERR_NO_RESOURCES))) { 3891 /* Don't reset timer for no resources */ 3892 3893 /* If discovery / RSCN timer is running, reset it */ 3894 if (timer_pending(&vport->fc_disctmo) || 3895 (vport->fc_flag & FC_RSCN_MODE)) 3896 lpfc_set_disctmo(vport); 3897 } 3898 3899 phba->fc_stat.elsXmitRetry++; 3900 if (ndlp && NLP_CHK_NODE_ACT(ndlp) && delay) { 3901 phba->fc_stat.elsDelayRetry++; 3902 ndlp->nlp_retry = cmdiocb->retry; 3903 3904 /* delay is specified in milliseconds */ 3905 mod_timer(&ndlp->nlp_delayfunc, 3906 jiffies + msecs_to_jiffies(delay)); 3907 spin_lock_irq(shost->host_lock); 3908 ndlp->nlp_flag |= NLP_DELAY_TMO; 3909 spin_unlock_irq(shost->host_lock); 3910 3911 ndlp->nlp_prev_state = ndlp->nlp_state; 3912 if ((cmd == ELS_CMD_PRLI) || 3913 (cmd == ELS_CMD_NVMEPRLI)) 3914 lpfc_nlp_set_state(vport, ndlp, 3915 NLP_STE_PRLI_ISSUE); 3916 else 3917 lpfc_nlp_set_state(vport, ndlp, 3918 NLP_STE_NPR_NODE); 3919 ndlp->nlp_last_elscmd = cmd; 3920 3921 return 1; 3922 } 3923 switch (cmd) { 3924 case ELS_CMD_FLOGI: 3925 lpfc_issue_els_flogi(vport, ndlp, cmdiocb->retry); 3926 return 1; 3927 case ELS_CMD_FDISC: 3928 lpfc_issue_els_fdisc(vport, ndlp, cmdiocb->retry); 3929 return 1; 3930 case ELS_CMD_PLOGI: 3931 if (ndlp && NLP_CHK_NODE_ACT(ndlp)) { 3932 ndlp->nlp_prev_state = ndlp->nlp_state; 3933 lpfc_nlp_set_state(vport, ndlp, 3934 NLP_STE_PLOGI_ISSUE); 3935 } 3936 lpfc_issue_els_plogi(vport, did, cmdiocb->retry); 3937 return 1; 3938 case ELS_CMD_ADISC: 3939 ndlp->nlp_prev_state = ndlp->nlp_state; 3940 lpfc_nlp_set_state(vport, ndlp, NLP_STE_ADISC_ISSUE); 3941 lpfc_issue_els_adisc(vport, ndlp, cmdiocb->retry); 3942 return 1; 3943 case ELS_CMD_PRLI: 3944 case ELS_CMD_NVMEPRLI: 3945 ndlp->nlp_prev_state = ndlp->nlp_state; 3946 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PRLI_ISSUE); 3947 lpfc_issue_els_prli(vport, ndlp, cmdiocb->retry); 3948 return 1; 3949 case ELS_CMD_LOGO: 3950 ndlp->nlp_prev_state = ndlp->nlp_state; 3951 lpfc_nlp_set_state(vport, ndlp, NLP_STE_LOGO_ISSUE); 3952 lpfc_issue_els_logo(vport, ndlp, cmdiocb->retry); 3953 return 1; 3954 } 3955 } 3956 /* No retry ELS command <elsCmd> to remote NPORT <did> */ 3957 if (logerr) { 3958 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS, 3959 "0137 No retry ELS command x%x to remote " 3960 "NPORT x%x: Out of Resources: Error:x%x/%x\n", 3961 cmd, did, irsp->ulpStatus, 3962 irsp->un.ulpWord[4]); 3963 } 3964 else { 3965 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, 3966 "0108 No retry ELS command x%x to remote " 3967 "NPORT x%x Retried:%d Error:x%x/%x\n", 3968 cmd, did, cmdiocb->retry, irsp->ulpStatus, 3969 irsp->un.ulpWord[4]); 3970 } 3971 return 0; 3972 } 3973 3974 /** 3975 * lpfc_els_free_data - Free lpfc dma buffer and data structure with an iocb 3976 * @phba: pointer to lpfc hba data structure. 3977 * @buf_ptr1: pointer to the lpfc DMA buffer data structure. 3978 * 3979 * This routine releases the lpfc DMA (Direct Memory Access) buffer(s) 3980 * associated with a command IOCB back to the lpfc DMA buffer pool. It first 3981 * checks to see whether there is a lpfc DMA buffer associated with the 3982 * response of the command IOCB. If so, it will be released before releasing 3983 * the lpfc DMA buffer associated with the IOCB itself. 3984 * 3985 * Return code 3986 * 0 - Successfully released lpfc DMA buffer (currently, always return 0) 3987 **/ 3988 static int 3989 lpfc_els_free_data(struct lpfc_hba *phba, struct lpfc_dmabuf *buf_ptr1) 3990 { 3991 struct lpfc_dmabuf *buf_ptr; 3992 3993 /* Free the response before processing the command. */ 3994 if (!list_empty(&buf_ptr1->list)) { 3995 list_remove_head(&buf_ptr1->list, buf_ptr, 3996 struct lpfc_dmabuf, 3997 list); 3998 lpfc_mbuf_free(phba, buf_ptr->virt, buf_ptr->phys); 3999 kfree(buf_ptr); 4000 } 4001 lpfc_mbuf_free(phba, buf_ptr1->virt, buf_ptr1->phys); 4002 kfree(buf_ptr1); 4003 return 0; 4004 } 4005 4006 /** 4007 * lpfc_els_free_bpl - Free lpfc dma buffer and data structure with bpl 4008 * @phba: pointer to lpfc hba data structure. 4009 * @buf_ptr: pointer to the lpfc dma buffer data structure. 4010 * 4011 * This routine releases the lpfc Direct Memory Access (DMA) buffer 4012 * associated with a Buffer Pointer List (BPL) back to the lpfc DMA buffer 4013 * pool. 4014 * 4015 * Return code 4016 * 0 - Successfully released lpfc DMA buffer (currently, always return 0) 4017 **/ 4018 static int 4019 lpfc_els_free_bpl(struct lpfc_hba *phba, struct lpfc_dmabuf *buf_ptr) 4020 { 4021 lpfc_mbuf_free(phba, buf_ptr->virt, buf_ptr->phys); 4022 kfree(buf_ptr); 4023 return 0; 4024 } 4025 4026 /** 4027 * lpfc_els_free_iocb - Free a command iocb and its associated resources 4028 * @phba: pointer to lpfc hba data structure. 4029 * @elsiocb: pointer to lpfc els command iocb data structure. 4030 * 4031 * This routine frees a command IOCB and its associated resources. The 4032 * command IOCB data structure contains the reference to various associated 4033 * resources, these fields must be set to NULL if the associated reference 4034 * not present: 4035 * context1 - reference to ndlp 4036 * context2 - reference to cmd 4037 * context2->next - reference to rsp 4038 * context3 - reference to bpl 4039 * 4040 * It first properly decrements the reference count held on ndlp for the 4041 * IOCB completion callback function. If LPFC_DELAY_MEM_FREE flag is not 4042 * set, it invokes the lpfc_els_free_data() routine to release the Direct 4043 * Memory Access (DMA) buffers associated with the IOCB. Otherwise, it 4044 * adds the DMA buffer the @phba data structure for the delayed release. 4045 * If reference to the Buffer Pointer List (BPL) is present, the 4046 * lpfc_els_free_bpl() routine is invoked to release the DMA memory 4047 * associated with BPL. Finally, the lpfc_sli_release_iocbq() routine is 4048 * invoked to release the IOCB data structure back to @phba IOCBQ list. 4049 * 4050 * Return code 4051 * 0 - Success (currently, always return 0) 4052 **/ 4053 int 4054 lpfc_els_free_iocb(struct lpfc_hba *phba, struct lpfc_iocbq *elsiocb) 4055 { 4056 struct lpfc_dmabuf *buf_ptr, *buf_ptr1; 4057 struct lpfc_nodelist *ndlp; 4058 4059 ndlp = (struct lpfc_nodelist *)elsiocb->context1; 4060 if (ndlp) { 4061 if (ndlp->nlp_flag & NLP_DEFER_RM) { 4062 lpfc_nlp_put(ndlp); 4063 4064 /* If the ndlp is not being used by another discovery 4065 * thread, free it. 4066 */ 4067 if (!lpfc_nlp_not_used(ndlp)) { 4068 /* If ndlp is being used by another discovery 4069 * thread, just clear NLP_DEFER_RM 4070 */ 4071 ndlp->nlp_flag &= ~NLP_DEFER_RM; 4072 } 4073 } 4074 else 4075 lpfc_nlp_put(ndlp); 4076 elsiocb->context1 = NULL; 4077 } 4078 /* context2 = cmd, context2->next = rsp, context3 = bpl */ 4079 if (elsiocb->context2) { 4080 if (elsiocb->iocb_flag & LPFC_DELAY_MEM_FREE) { 4081 /* Firmware could still be in progress of DMAing 4082 * payload, so don't free data buffer till after 4083 * a hbeat. 4084 */ 4085 elsiocb->iocb_flag &= ~LPFC_DELAY_MEM_FREE; 4086 buf_ptr = elsiocb->context2; 4087 elsiocb->context2 = NULL; 4088 if (buf_ptr) { 4089 buf_ptr1 = NULL; 4090 spin_lock_irq(&phba->hbalock); 4091 if (!list_empty(&buf_ptr->list)) { 4092 list_remove_head(&buf_ptr->list, 4093 buf_ptr1, struct lpfc_dmabuf, 4094 list); 4095 INIT_LIST_HEAD(&buf_ptr1->list); 4096 list_add_tail(&buf_ptr1->list, 4097 &phba->elsbuf); 4098 phba->elsbuf_cnt++; 4099 } 4100 INIT_LIST_HEAD(&buf_ptr->list); 4101 list_add_tail(&buf_ptr->list, &phba->elsbuf); 4102 phba->elsbuf_cnt++; 4103 spin_unlock_irq(&phba->hbalock); 4104 } 4105 } else { 4106 buf_ptr1 = (struct lpfc_dmabuf *) elsiocb->context2; 4107 lpfc_els_free_data(phba, buf_ptr1); 4108 elsiocb->context2 = NULL; 4109 } 4110 } 4111 4112 if (elsiocb->context3) { 4113 buf_ptr = (struct lpfc_dmabuf *) elsiocb->context3; 4114 lpfc_els_free_bpl(phba, buf_ptr); 4115 elsiocb->context3 = NULL; 4116 } 4117 lpfc_sli_release_iocbq(phba, elsiocb); 4118 return 0; 4119 } 4120 4121 /** 4122 * lpfc_cmpl_els_logo_acc - Completion callback function to logo acc response 4123 * @phba: pointer to lpfc hba data structure. 4124 * @cmdiocb: pointer to lpfc command iocb data structure. 4125 * @rspiocb: pointer to lpfc response iocb data structure. 4126 * 4127 * This routine is the completion callback function to the Logout (LOGO) 4128 * Accept (ACC) Response ELS command. This routine is invoked to indicate 4129 * the completion of the LOGO process. It invokes the lpfc_nlp_not_used() to 4130 * release the ndlp if it has the last reference remaining (reference count 4131 * is 1). If succeeded (meaning ndlp released), it sets the IOCB context1 4132 * field to NULL to inform the following lpfc_els_free_iocb() routine no 4133 * ndlp reference count needs to be decremented. Otherwise, the ndlp 4134 * reference use-count shall be decremented by the lpfc_els_free_iocb() 4135 * routine. Finally, the lpfc_els_free_iocb() is invoked to release the 4136 * IOCB data structure. 4137 **/ 4138 static void 4139 lpfc_cmpl_els_logo_acc(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb, 4140 struct lpfc_iocbq *rspiocb) 4141 { 4142 struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) cmdiocb->context1; 4143 struct lpfc_vport *vport = cmdiocb->vport; 4144 IOCB_t *irsp; 4145 4146 irsp = &rspiocb->iocb; 4147 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP, 4148 "ACC LOGO cmpl: status:x%x/x%x did:x%x", 4149 irsp->ulpStatus, irsp->un.ulpWord[4], ndlp->nlp_DID); 4150 /* ACC to LOGO completes to NPort <nlp_DID> */ 4151 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, 4152 "0109 ACC to LOGO completes to NPort x%x " 4153 "Data: x%x x%x x%x\n", 4154 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state, 4155 ndlp->nlp_rpi); 4156 4157 if (ndlp->nlp_state == NLP_STE_NPR_NODE) { 4158 /* NPort Recovery mode or node is just allocated */ 4159 if (!lpfc_nlp_not_used(ndlp)) { 4160 /* If the ndlp is being used by another discovery 4161 * thread, just unregister the RPI. 4162 */ 4163 lpfc_unreg_rpi(vport, ndlp); 4164 } else { 4165 /* Indicate the node has already released, should 4166 * not reference to it from within lpfc_els_free_iocb. 4167 */ 4168 cmdiocb->context1 = NULL; 4169 } 4170 } 4171 4172 /* 4173 * The driver received a LOGO from the rport and has ACK'd it. 4174 * At this point, the driver is done so release the IOCB 4175 */ 4176 lpfc_els_free_iocb(phba, cmdiocb); 4177 } 4178 4179 /** 4180 * lpfc_mbx_cmpl_dflt_rpi - Completion callbk func for unreg dflt rpi mbox cmd 4181 * @phba: pointer to lpfc hba data structure. 4182 * @pmb: pointer to the driver internal queue element for mailbox command. 4183 * 4184 * This routine is the completion callback function for unregister default 4185 * RPI (Remote Port Index) mailbox command to the @phba. It simply releases 4186 * the associated lpfc Direct Memory Access (DMA) buffer back to the pool and 4187 * decrements the ndlp reference count held for this completion callback 4188 * function. After that, it invokes the lpfc_nlp_not_used() to check 4189 * whether there is only one reference left on the ndlp. If so, it will 4190 * perform one more decrement and trigger the release of the ndlp. 4191 **/ 4192 void 4193 lpfc_mbx_cmpl_dflt_rpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 4194 { 4195 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *)(pmb->ctx_buf); 4196 struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *)pmb->ctx_ndlp; 4197 4198 pmb->ctx_buf = NULL; 4199 pmb->ctx_ndlp = NULL; 4200 4201 lpfc_mbuf_free(phba, mp->virt, mp->phys); 4202 kfree(mp); 4203 mempool_free(pmb, phba->mbox_mem_pool); 4204 if (ndlp) { 4205 lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_NODE, 4206 "0006 rpi%x DID:%x flg:%x %d map:%x %p\n", 4207 ndlp->nlp_rpi, ndlp->nlp_DID, ndlp->nlp_flag, 4208 kref_read(&ndlp->kref), 4209 ndlp->nlp_usg_map, ndlp); 4210 if (NLP_CHK_NODE_ACT(ndlp)) { 4211 lpfc_nlp_put(ndlp); 4212 /* This is the end of the default RPI cleanup logic for 4213 * this ndlp. If no other discovery threads are using 4214 * this ndlp, free all resources associated with it. 4215 */ 4216 lpfc_nlp_not_used(ndlp); 4217 } else { 4218 lpfc_drop_node(ndlp->vport, ndlp); 4219 } 4220 } 4221 4222 return; 4223 } 4224 4225 /** 4226 * lpfc_cmpl_els_rsp - Completion callback function for els response iocb cmd 4227 * @phba: pointer to lpfc hba data structure. 4228 * @cmdiocb: pointer to lpfc command iocb data structure. 4229 * @rspiocb: pointer to lpfc response iocb data structure. 4230 * 4231 * This routine is the completion callback function for ELS Response IOCB 4232 * command. In normal case, this callback function just properly sets the 4233 * nlp_flag bitmap in the ndlp data structure, if the mbox command reference 4234 * field in the command IOCB is not NULL, the referred mailbox command will 4235 * be send out, and then invokes the lpfc_els_free_iocb() routine to release 4236 * the IOCB. Under error conditions, such as when a LS_RJT is returned or a 4237 * link down event occurred during the discovery, the lpfc_nlp_not_used() 4238 * routine shall be invoked trying to release the ndlp if no other threads 4239 * are currently referring it. 4240 **/ 4241 static void 4242 lpfc_cmpl_els_rsp(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb, 4243 struct lpfc_iocbq *rspiocb) 4244 { 4245 struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) cmdiocb->context1; 4246 struct lpfc_vport *vport = ndlp ? ndlp->vport : NULL; 4247 struct Scsi_Host *shost = vport ? lpfc_shost_from_vport(vport) : NULL; 4248 IOCB_t *irsp; 4249 uint8_t *pcmd; 4250 LPFC_MBOXQ_t *mbox = NULL; 4251 struct lpfc_dmabuf *mp = NULL; 4252 uint32_t ls_rjt = 0; 4253 4254 irsp = &rspiocb->iocb; 4255 4256 if (cmdiocb->context_un.mbox) 4257 mbox = cmdiocb->context_un.mbox; 4258 4259 /* First determine if this is a LS_RJT cmpl. Note, this callback 4260 * function can have cmdiocb->contest1 (ndlp) field set to NULL. 4261 */ 4262 pcmd = (uint8_t *) (((struct lpfc_dmabuf *) cmdiocb->context2)->virt); 4263 if (ndlp && NLP_CHK_NODE_ACT(ndlp) && 4264 (*((uint32_t *) (pcmd)) == ELS_CMD_LS_RJT)) { 4265 /* A LS_RJT associated with Default RPI cleanup has its own 4266 * separate code path. 4267 */ 4268 if (!(ndlp->nlp_flag & NLP_RM_DFLT_RPI)) 4269 ls_rjt = 1; 4270 } 4271 4272 /* Check to see if link went down during discovery */ 4273 if (!ndlp || !NLP_CHK_NODE_ACT(ndlp) || lpfc_els_chk_latt(vport)) { 4274 if (mbox) { 4275 mp = (struct lpfc_dmabuf *)mbox->ctx_buf; 4276 if (mp) { 4277 lpfc_mbuf_free(phba, mp->virt, mp->phys); 4278 kfree(mp); 4279 } 4280 mempool_free(mbox, phba->mbox_mem_pool); 4281 } 4282 if (ndlp && NLP_CHK_NODE_ACT(ndlp) && 4283 (ndlp->nlp_flag & NLP_RM_DFLT_RPI)) 4284 if (lpfc_nlp_not_used(ndlp)) { 4285 ndlp = NULL; 4286 /* Indicate the node has already released, 4287 * should not reference to it from within 4288 * the routine lpfc_els_free_iocb. 4289 */ 4290 cmdiocb->context1 = NULL; 4291 } 4292 goto out; 4293 } 4294 4295 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP, 4296 "ELS rsp cmpl: status:x%x/x%x did:x%x", 4297 irsp->ulpStatus, irsp->un.ulpWord[4], 4298 cmdiocb->iocb.un.elsreq64.remoteID); 4299 /* ELS response tag <ulpIoTag> completes */ 4300 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, 4301 "0110 ELS response tag x%x completes " 4302 "Data: x%x x%x x%x x%x x%x x%x x%x\n", 4303 cmdiocb->iocb.ulpIoTag, rspiocb->iocb.ulpStatus, 4304 rspiocb->iocb.un.ulpWord[4], rspiocb->iocb.ulpTimeout, 4305 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state, 4306 ndlp->nlp_rpi); 4307 if (mbox) { 4308 if ((rspiocb->iocb.ulpStatus == 0) 4309 && (ndlp->nlp_flag & NLP_ACC_REGLOGIN)) { 4310 if (!lpfc_unreg_rpi(vport, ndlp) && 4311 (!(vport->fc_flag & FC_PT2PT)) && 4312 (ndlp->nlp_state == NLP_STE_PLOGI_ISSUE || 4313 ndlp->nlp_state == NLP_STE_REG_LOGIN_ISSUE)) { 4314 lpfc_printf_vlog(vport, KERN_INFO, 4315 LOG_DISCOVERY, 4316 "0314 PLOGI recov DID x%x " 4317 "Data: x%x x%x x%x\n", 4318 ndlp->nlp_DID, ndlp->nlp_state, 4319 ndlp->nlp_rpi, ndlp->nlp_flag); 4320 mp = mbox->ctx_buf; 4321 if (mp) { 4322 lpfc_mbuf_free(phba, mp->virt, 4323 mp->phys); 4324 kfree(mp); 4325 } 4326 mempool_free(mbox, phba->mbox_mem_pool); 4327 goto out; 4328 } 4329 4330 /* Increment reference count to ndlp to hold the 4331 * reference to ndlp for the callback function. 4332 */ 4333 mbox->ctx_ndlp = lpfc_nlp_get(ndlp); 4334 mbox->vport = vport; 4335 if (ndlp->nlp_flag & NLP_RM_DFLT_RPI) { 4336 mbox->mbox_flag |= LPFC_MBX_IMED_UNREG; 4337 mbox->mbox_cmpl = lpfc_mbx_cmpl_dflt_rpi; 4338 } 4339 else { 4340 mbox->mbox_cmpl = lpfc_mbx_cmpl_reg_login; 4341 ndlp->nlp_prev_state = ndlp->nlp_state; 4342 lpfc_nlp_set_state(vport, ndlp, 4343 NLP_STE_REG_LOGIN_ISSUE); 4344 } 4345 4346 ndlp->nlp_flag |= NLP_REG_LOGIN_SEND; 4347 if (lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT) 4348 != MBX_NOT_FINISHED) 4349 goto out; 4350 4351 /* Decrement the ndlp reference count we 4352 * set for this failed mailbox command. 4353 */ 4354 lpfc_nlp_put(ndlp); 4355 ndlp->nlp_flag &= ~NLP_REG_LOGIN_SEND; 4356 4357 /* ELS rsp: Cannot issue reg_login for <NPortid> */ 4358 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS, 4359 "0138 ELS rsp: Cannot issue reg_login for x%x " 4360 "Data: x%x x%x x%x\n", 4361 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state, 4362 ndlp->nlp_rpi); 4363 4364 if (lpfc_nlp_not_used(ndlp)) { 4365 ndlp = NULL; 4366 /* Indicate node has already been released, 4367 * should not reference to it from within 4368 * the routine lpfc_els_free_iocb. 4369 */ 4370 cmdiocb->context1 = NULL; 4371 } 4372 } else { 4373 /* Do not drop node for lpfc_els_abort'ed ELS cmds */ 4374 if (!lpfc_error_lost_link(irsp) && 4375 ndlp->nlp_flag & NLP_ACC_REGLOGIN) { 4376 if (lpfc_nlp_not_used(ndlp)) { 4377 ndlp = NULL; 4378 /* Indicate node has already been 4379 * released, should not reference 4380 * to it from within the routine 4381 * lpfc_els_free_iocb. 4382 */ 4383 cmdiocb->context1 = NULL; 4384 } 4385 } 4386 } 4387 mp = (struct lpfc_dmabuf *)mbox->ctx_buf; 4388 if (mp) { 4389 lpfc_mbuf_free(phba, mp->virt, mp->phys); 4390 kfree(mp); 4391 } 4392 mempool_free(mbox, phba->mbox_mem_pool); 4393 } 4394 out: 4395 if (ndlp && NLP_CHK_NODE_ACT(ndlp)) { 4396 spin_lock_irq(shost->host_lock); 4397 ndlp->nlp_flag &= ~(NLP_ACC_REGLOGIN | NLP_RM_DFLT_RPI); 4398 spin_unlock_irq(shost->host_lock); 4399 4400 /* If the node is not being used by another discovery thread, 4401 * and we are sending a reject, we are done with it. 4402 * Release driver reference count here and free associated 4403 * resources. 4404 */ 4405 if (ls_rjt) 4406 if (lpfc_nlp_not_used(ndlp)) 4407 /* Indicate node has already been released, 4408 * should not reference to it from within 4409 * the routine lpfc_els_free_iocb. 4410 */ 4411 cmdiocb->context1 = NULL; 4412 4413 } 4414 4415 lpfc_els_free_iocb(phba, cmdiocb); 4416 return; 4417 } 4418 4419 /** 4420 * lpfc_els_rsp_acc - Prepare and issue an acc response iocb command 4421 * @vport: pointer to a host virtual N_Port data structure. 4422 * @flag: the els command code to be accepted. 4423 * @oldiocb: pointer to the original lpfc command iocb data structure. 4424 * @ndlp: pointer to a node-list data structure. 4425 * @mbox: pointer to the driver internal queue element for mailbox command. 4426 * 4427 * This routine prepares and issues an Accept (ACC) response IOCB 4428 * command. It uses the @flag to properly set up the IOCB field for the 4429 * specific ACC response command to be issued and invokes the 4430 * lpfc_sli_issue_iocb() routine to send out ACC response IOCB. If a 4431 * @mbox pointer is passed in, it will be put into the context_un.mbox 4432 * field of the IOCB for the completion callback function to issue the 4433 * mailbox command to the HBA later when callback is invoked. 4434 * 4435 * Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp 4436 * will be incremented by 1 for holding the ndlp and the reference to ndlp 4437 * will be stored into the context1 field of the IOCB for the completion 4438 * callback function to the corresponding response ELS IOCB command. 4439 * 4440 * Return code 4441 * 0 - Successfully issued acc response 4442 * 1 - Failed to issue acc response 4443 **/ 4444 int 4445 lpfc_els_rsp_acc(struct lpfc_vport *vport, uint32_t flag, 4446 struct lpfc_iocbq *oldiocb, struct lpfc_nodelist *ndlp, 4447 LPFC_MBOXQ_t *mbox) 4448 { 4449 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 4450 struct lpfc_hba *phba = vport->phba; 4451 IOCB_t *icmd; 4452 IOCB_t *oldcmd; 4453 struct lpfc_iocbq *elsiocb; 4454 uint8_t *pcmd; 4455 struct serv_parm *sp; 4456 uint16_t cmdsize; 4457 int rc; 4458 ELS_PKT *els_pkt_ptr; 4459 4460 oldcmd = &oldiocb->iocb; 4461 4462 switch (flag) { 4463 case ELS_CMD_ACC: 4464 cmdsize = sizeof(uint32_t); 4465 elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry, 4466 ndlp, ndlp->nlp_DID, ELS_CMD_ACC); 4467 if (!elsiocb) { 4468 spin_lock_irq(shost->host_lock); 4469 ndlp->nlp_flag &= ~NLP_LOGO_ACC; 4470 spin_unlock_irq(shost->host_lock); 4471 return 1; 4472 } 4473 4474 icmd = &elsiocb->iocb; 4475 icmd->ulpContext = oldcmd->ulpContext; /* Xri / rx_id */ 4476 icmd->unsli3.rcvsli3.ox_id = oldcmd->unsli3.rcvsli3.ox_id; 4477 pcmd = (((struct lpfc_dmabuf *) elsiocb->context2)->virt); 4478 *((uint32_t *) (pcmd)) = ELS_CMD_ACC; 4479 pcmd += sizeof(uint32_t); 4480 4481 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP, 4482 "Issue ACC: did:x%x flg:x%x", 4483 ndlp->nlp_DID, ndlp->nlp_flag, 0); 4484 break; 4485 case ELS_CMD_FLOGI: 4486 case ELS_CMD_PLOGI: 4487 cmdsize = (sizeof(struct serv_parm) + sizeof(uint32_t)); 4488 elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry, 4489 ndlp, ndlp->nlp_DID, ELS_CMD_ACC); 4490 if (!elsiocb) 4491 return 1; 4492 4493 icmd = &elsiocb->iocb; 4494 icmd->ulpContext = oldcmd->ulpContext; /* Xri / rx_id */ 4495 icmd->unsli3.rcvsli3.ox_id = oldcmd->unsli3.rcvsli3.ox_id; 4496 pcmd = (((struct lpfc_dmabuf *) elsiocb->context2)->virt); 4497 4498 if (mbox) 4499 elsiocb->context_un.mbox = mbox; 4500 4501 *((uint32_t *) (pcmd)) = ELS_CMD_ACC; 4502 pcmd += sizeof(uint32_t); 4503 sp = (struct serv_parm *)pcmd; 4504 4505 if (flag == ELS_CMD_FLOGI) { 4506 /* Copy the received service parameters back */ 4507 memcpy(sp, &phba->fc_fabparam, 4508 sizeof(struct serv_parm)); 4509 4510 /* Clear the F_Port bit */ 4511 sp->cmn.fPort = 0; 4512 4513 /* Mark all class service parameters as invalid */ 4514 sp->cls1.classValid = 0; 4515 sp->cls2.classValid = 0; 4516 sp->cls3.classValid = 0; 4517 sp->cls4.classValid = 0; 4518 4519 /* Copy our worldwide names */ 4520 memcpy(&sp->portName, &vport->fc_sparam.portName, 4521 sizeof(struct lpfc_name)); 4522 memcpy(&sp->nodeName, &vport->fc_sparam.nodeName, 4523 sizeof(struct lpfc_name)); 4524 } else { 4525 memcpy(pcmd, &vport->fc_sparam, 4526 sizeof(struct serv_parm)); 4527 4528 sp->cmn.valid_vendor_ver_level = 0; 4529 memset(sp->un.vendorVersion, 0, 4530 sizeof(sp->un.vendorVersion)); 4531 sp->cmn.bbRcvSizeMsb &= 0xF; 4532 4533 /* If our firmware supports this feature, convey that 4534 * info to the target using the vendor specific field. 4535 */ 4536 if (phba->sli.sli_flag & LPFC_SLI_SUPPRESS_RSP) { 4537 sp->cmn.valid_vendor_ver_level = 1; 4538 sp->un.vv.vid = cpu_to_be32(LPFC_VV_EMLX_ID); 4539 sp->un.vv.flags = 4540 cpu_to_be32(LPFC_VV_SUPPRESS_RSP); 4541 } 4542 } 4543 4544 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP, 4545 "Issue ACC FLOGI/PLOGI: did:x%x flg:x%x", 4546 ndlp->nlp_DID, ndlp->nlp_flag, 0); 4547 break; 4548 case ELS_CMD_PRLO: 4549 cmdsize = sizeof(uint32_t) + sizeof(PRLO); 4550 elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry, 4551 ndlp, ndlp->nlp_DID, ELS_CMD_PRLO); 4552 if (!elsiocb) 4553 return 1; 4554 4555 icmd = &elsiocb->iocb; 4556 icmd->ulpContext = oldcmd->ulpContext; /* Xri / rx_id */ 4557 icmd->unsli3.rcvsli3.ox_id = oldcmd->unsli3.rcvsli3.ox_id; 4558 pcmd = (((struct lpfc_dmabuf *) elsiocb->context2)->virt); 4559 4560 memcpy(pcmd, ((struct lpfc_dmabuf *) oldiocb->context2)->virt, 4561 sizeof(uint32_t) + sizeof(PRLO)); 4562 *((uint32_t *) (pcmd)) = ELS_CMD_PRLO_ACC; 4563 els_pkt_ptr = (ELS_PKT *) pcmd; 4564 els_pkt_ptr->un.prlo.acceptRspCode = PRLO_REQ_EXECUTED; 4565 4566 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP, 4567 "Issue ACC PRLO: did:x%x flg:x%x", 4568 ndlp->nlp_DID, ndlp->nlp_flag, 0); 4569 break; 4570 default: 4571 return 1; 4572 } 4573 if (ndlp->nlp_flag & NLP_LOGO_ACC) { 4574 spin_lock_irq(shost->host_lock); 4575 if (!(ndlp->nlp_flag & NLP_RPI_REGISTERED || 4576 ndlp->nlp_flag & NLP_REG_LOGIN_SEND)) 4577 ndlp->nlp_flag &= ~NLP_LOGO_ACC; 4578 spin_unlock_irq(shost->host_lock); 4579 elsiocb->iocb_cmpl = lpfc_cmpl_els_logo_acc; 4580 } else { 4581 elsiocb->iocb_cmpl = lpfc_cmpl_els_rsp; 4582 } 4583 4584 phba->fc_stat.elsXmitACC++; 4585 rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0); 4586 if (rc == IOCB_ERROR) { 4587 lpfc_els_free_iocb(phba, elsiocb); 4588 return 1; 4589 } 4590 return 0; 4591 } 4592 4593 /** 4594 * lpfc_els_rsp_reject - Propare and issue a rjt response iocb command 4595 * @vport: pointer to a virtual N_Port data structure. 4596 * @rejectError: 4597 * @oldiocb: pointer to the original lpfc command iocb data structure. 4598 * @ndlp: pointer to a node-list data structure. 4599 * @mbox: pointer to the driver internal queue element for mailbox command. 4600 * 4601 * This routine prepares and issue an Reject (RJT) response IOCB 4602 * command. If a @mbox pointer is passed in, it will be put into the 4603 * context_un.mbox field of the IOCB for the completion callback function 4604 * to issue to the HBA later. 4605 * 4606 * Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp 4607 * will be incremented by 1 for holding the ndlp and the reference to ndlp 4608 * will be stored into the context1 field of the IOCB for the completion 4609 * callback function to the reject response ELS IOCB command. 4610 * 4611 * Return code 4612 * 0 - Successfully issued reject response 4613 * 1 - Failed to issue reject response 4614 **/ 4615 int 4616 lpfc_els_rsp_reject(struct lpfc_vport *vport, uint32_t rejectError, 4617 struct lpfc_iocbq *oldiocb, struct lpfc_nodelist *ndlp, 4618 LPFC_MBOXQ_t *mbox) 4619 { 4620 struct lpfc_hba *phba = vport->phba; 4621 IOCB_t *icmd; 4622 IOCB_t *oldcmd; 4623 struct lpfc_iocbq *elsiocb; 4624 uint8_t *pcmd; 4625 uint16_t cmdsize; 4626 int rc; 4627 4628 cmdsize = 2 * sizeof(uint32_t); 4629 elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry, ndlp, 4630 ndlp->nlp_DID, ELS_CMD_LS_RJT); 4631 if (!elsiocb) 4632 return 1; 4633 4634 icmd = &elsiocb->iocb; 4635 oldcmd = &oldiocb->iocb; 4636 icmd->ulpContext = oldcmd->ulpContext; /* Xri / rx_id */ 4637 icmd->unsli3.rcvsli3.ox_id = oldcmd->unsli3.rcvsli3.ox_id; 4638 pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt); 4639 4640 *((uint32_t *) (pcmd)) = ELS_CMD_LS_RJT; 4641 pcmd += sizeof(uint32_t); 4642 *((uint32_t *) (pcmd)) = rejectError; 4643 4644 if (mbox) 4645 elsiocb->context_un.mbox = mbox; 4646 4647 /* Xmit ELS RJT <err> response tag <ulpIoTag> */ 4648 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, 4649 "0129 Xmit ELS RJT x%x response tag x%x " 4650 "xri x%x, did x%x, nlp_flag x%x, nlp_state x%x, " 4651 "rpi x%x\n", 4652 rejectError, elsiocb->iotag, 4653 elsiocb->iocb.ulpContext, ndlp->nlp_DID, 4654 ndlp->nlp_flag, ndlp->nlp_state, ndlp->nlp_rpi); 4655 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP, 4656 "Issue LS_RJT: did:x%x flg:x%x err:x%x", 4657 ndlp->nlp_DID, ndlp->nlp_flag, rejectError); 4658 4659 phba->fc_stat.elsXmitLSRJT++; 4660 elsiocb->iocb_cmpl = lpfc_cmpl_els_rsp; 4661 rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0); 4662 4663 if (rc == IOCB_ERROR) { 4664 lpfc_els_free_iocb(phba, elsiocb); 4665 return 1; 4666 } 4667 return 0; 4668 } 4669 4670 /** 4671 * lpfc_els_rsp_adisc_acc - Prepare and issue acc response to adisc iocb cmd 4672 * @vport: pointer to a virtual N_Port data structure. 4673 * @oldiocb: pointer to the original lpfc command iocb data structure. 4674 * @ndlp: pointer to a node-list data structure. 4675 * 4676 * This routine prepares and issues an Accept (ACC) response to Address 4677 * Discover (ADISC) ELS command. It simply prepares the payload of the IOCB 4678 * and invokes the lpfc_sli_issue_iocb() routine to send out the command. 4679 * 4680 * Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp 4681 * will be incremented by 1 for holding the ndlp and the reference to ndlp 4682 * will be stored into the context1 field of the IOCB for the completion 4683 * callback function to the ADISC Accept response ELS IOCB command. 4684 * 4685 * Return code 4686 * 0 - Successfully issued acc adisc response 4687 * 1 - Failed to issue adisc acc response 4688 **/ 4689 int 4690 lpfc_els_rsp_adisc_acc(struct lpfc_vport *vport, struct lpfc_iocbq *oldiocb, 4691 struct lpfc_nodelist *ndlp) 4692 { 4693 struct lpfc_hba *phba = vport->phba; 4694 ADISC *ap; 4695 IOCB_t *icmd, *oldcmd; 4696 struct lpfc_iocbq *elsiocb; 4697 uint8_t *pcmd; 4698 uint16_t cmdsize; 4699 int rc; 4700 4701 cmdsize = sizeof(uint32_t) + sizeof(ADISC); 4702 elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry, ndlp, 4703 ndlp->nlp_DID, ELS_CMD_ACC); 4704 if (!elsiocb) 4705 return 1; 4706 4707 icmd = &elsiocb->iocb; 4708 oldcmd = &oldiocb->iocb; 4709 icmd->ulpContext = oldcmd->ulpContext; /* Xri / rx_id */ 4710 icmd->unsli3.rcvsli3.ox_id = oldcmd->unsli3.rcvsli3.ox_id; 4711 4712 /* Xmit ADISC ACC response tag <ulpIoTag> */ 4713 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, 4714 "0130 Xmit ADISC ACC response iotag x%x xri: " 4715 "x%x, did x%x, nlp_flag x%x, nlp_state x%x rpi x%x\n", 4716 elsiocb->iotag, elsiocb->iocb.ulpContext, 4717 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state, 4718 ndlp->nlp_rpi); 4719 pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt); 4720 4721 *((uint32_t *) (pcmd)) = ELS_CMD_ACC; 4722 pcmd += sizeof(uint32_t); 4723 4724 ap = (ADISC *) (pcmd); 4725 ap->hardAL_PA = phba->fc_pref_ALPA; 4726 memcpy(&ap->portName, &vport->fc_portname, sizeof(struct lpfc_name)); 4727 memcpy(&ap->nodeName, &vport->fc_nodename, sizeof(struct lpfc_name)); 4728 ap->DID = be32_to_cpu(vport->fc_myDID); 4729 4730 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP, 4731 "Issue ACC ADISC: did:x%x flg:x%x", 4732 ndlp->nlp_DID, ndlp->nlp_flag, 0); 4733 4734 phba->fc_stat.elsXmitACC++; 4735 elsiocb->iocb_cmpl = lpfc_cmpl_els_rsp; 4736 rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0); 4737 if (rc == IOCB_ERROR) { 4738 lpfc_els_free_iocb(phba, elsiocb); 4739 return 1; 4740 } 4741 4742 /* Xmit ELS ACC response tag <ulpIoTag> */ 4743 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, 4744 "0128 Xmit ELS ACC response Status: x%x, IoTag: x%x, " 4745 "XRI: x%x, DID: x%x, nlp_flag: x%x nlp_state: x%x " 4746 "RPI: x%x, fc_flag x%x\n", 4747 rc, elsiocb->iotag, elsiocb->sli4_xritag, 4748 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state, 4749 ndlp->nlp_rpi, vport->fc_flag); 4750 return 0; 4751 } 4752 4753 /** 4754 * lpfc_els_rsp_prli_acc - Prepare and issue acc response to prli iocb cmd 4755 * @vport: pointer to a virtual N_Port data structure. 4756 * @oldiocb: pointer to the original lpfc command iocb data structure. 4757 * @ndlp: pointer to a node-list data structure. 4758 * 4759 * This routine prepares and issues an Accept (ACC) response to Process 4760 * Login (PRLI) ELS command. It simply prepares the payload of the IOCB 4761 * and invokes the lpfc_sli_issue_iocb() routine to send out the command. 4762 * 4763 * Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp 4764 * will be incremented by 1 for holding the ndlp and the reference to ndlp 4765 * will be stored into the context1 field of the IOCB for the completion 4766 * callback function to the PRLI Accept response ELS IOCB command. 4767 * 4768 * Return code 4769 * 0 - Successfully issued acc prli response 4770 * 1 - Failed to issue acc prli response 4771 **/ 4772 int 4773 lpfc_els_rsp_prli_acc(struct lpfc_vport *vport, struct lpfc_iocbq *oldiocb, 4774 struct lpfc_nodelist *ndlp) 4775 { 4776 struct lpfc_hba *phba = vport->phba; 4777 PRLI *npr; 4778 struct lpfc_nvme_prli *npr_nvme; 4779 lpfc_vpd_t *vpd; 4780 IOCB_t *icmd; 4781 IOCB_t *oldcmd; 4782 struct lpfc_iocbq *elsiocb; 4783 uint8_t *pcmd; 4784 uint16_t cmdsize; 4785 uint32_t prli_fc4_req, *req_payload; 4786 struct lpfc_dmabuf *req_buf; 4787 int rc; 4788 u32 elsrspcmd; 4789 4790 /* Need the incoming PRLI payload to determine if the ACC is for an 4791 * FC4 or NVME PRLI type. The PRLI type is at word 1. 4792 */ 4793 req_buf = (struct lpfc_dmabuf *)oldiocb->context2; 4794 req_payload = (((uint32_t *)req_buf->virt) + 1); 4795 4796 /* PRLI type payload is at byte 3 for FCP or NVME. */ 4797 prli_fc4_req = be32_to_cpu(*req_payload); 4798 prli_fc4_req = (prli_fc4_req >> 24) & 0xff; 4799 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, 4800 "6127 PRLI_ACC: Req Type x%x, Word1 x%08x\n", 4801 prli_fc4_req, *((uint32_t *)req_payload)); 4802 4803 if (prli_fc4_req == PRLI_FCP_TYPE) { 4804 cmdsize = sizeof(uint32_t) + sizeof(PRLI); 4805 elsrspcmd = (ELS_CMD_ACC | (ELS_CMD_PRLI & ~ELS_RSP_MASK)); 4806 } else if (prli_fc4_req & PRLI_NVME_TYPE) { 4807 cmdsize = sizeof(uint32_t) + sizeof(struct lpfc_nvme_prli); 4808 elsrspcmd = (ELS_CMD_ACC | (ELS_CMD_NVMEPRLI & ~ELS_RSP_MASK)); 4809 } else { 4810 return 1; 4811 } 4812 4813 elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry, ndlp, 4814 ndlp->nlp_DID, elsrspcmd); 4815 if (!elsiocb) 4816 return 1; 4817 4818 icmd = &elsiocb->iocb; 4819 oldcmd = &oldiocb->iocb; 4820 icmd->ulpContext = oldcmd->ulpContext; /* Xri / rx_id */ 4821 icmd->unsli3.rcvsli3.ox_id = oldcmd->unsli3.rcvsli3.ox_id; 4822 4823 /* Xmit PRLI ACC response tag <ulpIoTag> */ 4824 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, 4825 "0131 Xmit PRLI ACC response tag x%x xri x%x, " 4826 "did x%x, nlp_flag x%x, nlp_state x%x, rpi x%x\n", 4827 elsiocb->iotag, elsiocb->iocb.ulpContext, 4828 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state, 4829 ndlp->nlp_rpi); 4830 pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt); 4831 memset(pcmd, 0, cmdsize); 4832 4833 *((uint32_t *)(pcmd)) = elsrspcmd; 4834 pcmd += sizeof(uint32_t); 4835 4836 /* For PRLI, remainder of payload is PRLI parameter page */ 4837 vpd = &phba->vpd; 4838 4839 if (prli_fc4_req == PRLI_FCP_TYPE) { 4840 /* 4841 * If the remote port is a target and our firmware version 4842 * is 3.20 or later, set the following bits for FC-TAPE 4843 * support. 4844 */ 4845 npr = (PRLI *) pcmd; 4846 if ((ndlp->nlp_type & NLP_FCP_TARGET) && 4847 (vpd->rev.feaLevelHigh >= 0x02)) { 4848 npr->ConfmComplAllowed = 1; 4849 npr->Retry = 1; 4850 npr->TaskRetryIdReq = 1; 4851 } 4852 npr->acceptRspCode = PRLI_REQ_EXECUTED; 4853 npr->estabImagePair = 1; 4854 npr->readXferRdyDis = 1; 4855 npr->ConfmComplAllowed = 1; 4856 npr->prliType = PRLI_FCP_TYPE; 4857 npr->initiatorFunc = 1; 4858 } else if (prli_fc4_req & PRLI_NVME_TYPE) { 4859 /* Respond with an NVME PRLI Type */ 4860 npr_nvme = (struct lpfc_nvme_prli *) pcmd; 4861 bf_set(prli_type_code, npr_nvme, PRLI_NVME_TYPE); 4862 bf_set(prli_estabImagePair, npr_nvme, 0); /* Should be 0 */ 4863 bf_set(prli_acc_rsp_code, npr_nvme, PRLI_REQ_EXECUTED); 4864 if (phba->nvmet_support) { 4865 bf_set(prli_tgt, npr_nvme, 1); 4866 bf_set(prli_disc, npr_nvme, 1); 4867 if (phba->cfg_nvme_enable_fb) { 4868 bf_set(prli_fba, npr_nvme, 1); 4869 4870 /* TBD. Target mode needs to post buffers 4871 * that support the configured first burst 4872 * byte size. 4873 */ 4874 bf_set(prli_fb_sz, npr_nvme, 4875 phba->cfg_nvmet_fb_size); 4876 } 4877 } else { 4878 bf_set(prli_init, npr_nvme, 1); 4879 } 4880 4881 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_DISC, 4882 "6015 NVME issue PRLI ACC word1 x%08x " 4883 "word4 x%08x word5 x%08x flag x%x, " 4884 "fcp_info x%x nlp_type x%x\n", 4885 npr_nvme->word1, npr_nvme->word4, 4886 npr_nvme->word5, ndlp->nlp_flag, 4887 ndlp->nlp_fcp_info, ndlp->nlp_type); 4888 npr_nvme->word1 = cpu_to_be32(npr_nvme->word1); 4889 npr_nvme->word4 = cpu_to_be32(npr_nvme->word4); 4890 npr_nvme->word5 = cpu_to_be32(npr_nvme->word5); 4891 } else 4892 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, 4893 "6128 Unknown FC_TYPE x%x x%x ndlp x%06x\n", 4894 prli_fc4_req, ndlp->nlp_fc4_type, 4895 ndlp->nlp_DID); 4896 4897 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP, 4898 "Issue ACC PRLI: did:x%x flg:x%x", 4899 ndlp->nlp_DID, ndlp->nlp_flag, 0); 4900 4901 phba->fc_stat.elsXmitACC++; 4902 elsiocb->iocb_cmpl = lpfc_cmpl_els_rsp; 4903 4904 rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0); 4905 if (rc == IOCB_ERROR) { 4906 lpfc_els_free_iocb(phba, elsiocb); 4907 return 1; 4908 } 4909 return 0; 4910 } 4911 4912 /** 4913 * lpfc_els_rsp_rnid_acc - Issue rnid acc response iocb command 4914 * @vport: pointer to a virtual N_Port data structure. 4915 * @format: rnid command format. 4916 * @oldiocb: pointer to the original lpfc command iocb data structure. 4917 * @ndlp: pointer to a node-list data structure. 4918 * 4919 * This routine issues a Request Node Identification Data (RNID) Accept 4920 * (ACC) response. It constructs the RNID ACC response command according to 4921 * the proper @format and then calls the lpfc_sli_issue_iocb() routine to 4922 * issue the response. Note that this command does not need to hold the ndlp 4923 * reference count for the callback. So, the ndlp reference count taken by 4924 * the lpfc_prep_els_iocb() routine is put back and the context1 field of 4925 * IOCB is set to NULL to indicate to the lpfc_els_free_iocb() routine that 4926 * there is no ndlp reference available. 4927 * 4928 * Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp 4929 * will be incremented by 1 for holding the ndlp and the reference to ndlp 4930 * will be stored into the context1 field of the IOCB for the completion 4931 * callback function. However, for the RNID Accept Response ELS command, 4932 * this is undone later by this routine after the IOCB is allocated. 4933 * 4934 * Return code 4935 * 0 - Successfully issued acc rnid response 4936 * 1 - Failed to issue acc rnid response 4937 **/ 4938 static int 4939 lpfc_els_rsp_rnid_acc(struct lpfc_vport *vport, uint8_t format, 4940 struct lpfc_iocbq *oldiocb, struct lpfc_nodelist *ndlp) 4941 { 4942 struct lpfc_hba *phba = vport->phba; 4943 RNID *rn; 4944 IOCB_t *icmd, *oldcmd; 4945 struct lpfc_iocbq *elsiocb; 4946 uint8_t *pcmd; 4947 uint16_t cmdsize; 4948 int rc; 4949 4950 cmdsize = sizeof(uint32_t) + sizeof(uint32_t) 4951 + (2 * sizeof(struct lpfc_name)); 4952 if (format) 4953 cmdsize += sizeof(RNID_TOP_DISC); 4954 4955 elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry, ndlp, 4956 ndlp->nlp_DID, ELS_CMD_ACC); 4957 if (!elsiocb) 4958 return 1; 4959 4960 icmd = &elsiocb->iocb; 4961 oldcmd = &oldiocb->iocb; 4962 icmd->ulpContext = oldcmd->ulpContext; /* Xri / rx_id */ 4963 icmd->unsli3.rcvsli3.ox_id = oldcmd->unsli3.rcvsli3.ox_id; 4964 4965 /* Xmit RNID ACC response tag <ulpIoTag> */ 4966 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, 4967 "0132 Xmit RNID ACC response tag x%x xri x%x\n", 4968 elsiocb->iotag, elsiocb->iocb.ulpContext); 4969 pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt); 4970 *((uint32_t *) (pcmd)) = ELS_CMD_ACC; 4971 pcmd += sizeof(uint32_t); 4972 4973 memset(pcmd, 0, sizeof(RNID)); 4974 rn = (RNID *) (pcmd); 4975 rn->Format = format; 4976 rn->CommonLen = (2 * sizeof(struct lpfc_name)); 4977 memcpy(&rn->portName, &vport->fc_portname, sizeof(struct lpfc_name)); 4978 memcpy(&rn->nodeName, &vport->fc_nodename, sizeof(struct lpfc_name)); 4979 switch (format) { 4980 case 0: 4981 rn->SpecificLen = 0; 4982 break; 4983 case RNID_TOPOLOGY_DISC: 4984 rn->SpecificLen = sizeof(RNID_TOP_DISC); 4985 memcpy(&rn->un.topologyDisc.portName, 4986 &vport->fc_portname, sizeof(struct lpfc_name)); 4987 rn->un.topologyDisc.unitType = RNID_HBA; 4988 rn->un.topologyDisc.physPort = 0; 4989 rn->un.topologyDisc.attachedNodes = 0; 4990 break; 4991 default: 4992 rn->CommonLen = 0; 4993 rn->SpecificLen = 0; 4994 break; 4995 } 4996 4997 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP, 4998 "Issue ACC RNID: did:x%x flg:x%x", 4999 ndlp->nlp_DID, ndlp->nlp_flag, 0); 5000 5001 phba->fc_stat.elsXmitACC++; 5002 elsiocb->iocb_cmpl = lpfc_cmpl_els_rsp; 5003 5004 rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0); 5005 if (rc == IOCB_ERROR) { 5006 lpfc_els_free_iocb(phba, elsiocb); 5007 return 1; 5008 } 5009 return 0; 5010 } 5011 5012 /** 5013 * lpfc_els_clear_rrq - Clear the rq that this rrq describes. 5014 * @vport: pointer to a virtual N_Port data structure. 5015 * @iocb: pointer to the lpfc command iocb data structure. 5016 * @ndlp: pointer to a node-list data structure. 5017 * 5018 * Return 5019 **/ 5020 static void 5021 lpfc_els_clear_rrq(struct lpfc_vport *vport, 5022 struct lpfc_iocbq *iocb, struct lpfc_nodelist *ndlp) 5023 { 5024 struct lpfc_hba *phba = vport->phba; 5025 uint8_t *pcmd; 5026 struct RRQ *rrq; 5027 uint16_t rxid; 5028 uint16_t xri; 5029 struct lpfc_node_rrq *prrq; 5030 5031 5032 pcmd = (uint8_t *) (((struct lpfc_dmabuf *) iocb->context2)->virt); 5033 pcmd += sizeof(uint32_t); 5034 rrq = (struct RRQ *)pcmd; 5035 rrq->rrq_exchg = be32_to_cpu(rrq->rrq_exchg); 5036 rxid = bf_get(rrq_rxid, rrq); 5037 5038 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, 5039 "2883 Clear RRQ for SID:x%x OXID:x%x RXID:x%x" 5040 " x%x x%x\n", 5041 be32_to_cpu(bf_get(rrq_did, rrq)), 5042 bf_get(rrq_oxid, rrq), 5043 rxid, 5044 iocb->iotag, iocb->iocb.ulpContext); 5045 5046 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP, 5047 "Clear RRQ: did:x%x flg:x%x exchg:x%.08x", 5048 ndlp->nlp_DID, ndlp->nlp_flag, rrq->rrq_exchg); 5049 if (vport->fc_myDID == be32_to_cpu(bf_get(rrq_did, rrq))) 5050 xri = bf_get(rrq_oxid, rrq); 5051 else 5052 xri = rxid; 5053 prrq = lpfc_get_active_rrq(vport, xri, ndlp->nlp_DID); 5054 if (prrq) 5055 lpfc_clr_rrq_active(phba, xri, prrq); 5056 return; 5057 } 5058 5059 /** 5060 * lpfc_els_rsp_echo_acc - Issue echo acc response 5061 * @vport: pointer to a virtual N_Port data structure. 5062 * @data: pointer to echo data to return in the accept. 5063 * @oldiocb: pointer to the original lpfc command iocb data structure. 5064 * @ndlp: pointer to a node-list data structure. 5065 * 5066 * Return code 5067 * 0 - Successfully issued acc echo response 5068 * 1 - Failed to issue acc echo response 5069 **/ 5070 static int 5071 lpfc_els_rsp_echo_acc(struct lpfc_vport *vport, uint8_t *data, 5072 struct lpfc_iocbq *oldiocb, struct lpfc_nodelist *ndlp) 5073 { 5074 struct lpfc_hba *phba = vport->phba; 5075 struct lpfc_iocbq *elsiocb; 5076 uint8_t *pcmd; 5077 uint16_t cmdsize; 5078 int rc; 5079 5080 cmdsize = oldiocb->iocb.unsli3.rcvsli3.acc_len; 5081 5082 /* The accumulated length can exceed the BPL_SIZE. For 5083 * now, use this as the limit 5084 */ 5085 if (cmdsize > LPFC_BPL_SIZE) 5086 cmdsize = LPFC_BPL_SIZE; 5087 elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry, ndlp, 5088 ndlp->nlp_DID, ELS_CMD_ACC); 5089 if (!elsiocb) 5090 return 1; 5091 5092 elsiocb->iocb.ulpContext = oldiocb->iocb.ulpContext; /* Xri / rx_id */ 5093 elsiocb->iocb.unsli3.rcvsli3.ox_id = oldiocb->iocb.unsli3.rcvsli3.ox_id; 5094 5095 /* Xmit ECHO ACC response tag <ulpIoTag> */ 5096 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, 5097 "2876 Xmit ECHO ACC response tag x%x xri x%x\n", 5098 elsiocb->iotag, elsiocb->iocb.ulpContext); 5099 pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt); 5100 *((uint32_t *) (pcmd)) = ELS_CMD_ACC; 5101 pcmd += sizeof(uint32_t); 5102 memcpy(pcmd, data, cmdsize - sizeof(uint32_t)); 5103 5104 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP, 5105 "Issue ACC ECHO: did:x%x flg:x%x", 5106 ndlp->nlp_DID, ndlp->nlp_flag, 0); 5107 5108 phba->fc_stat.elsXmitACC++; 5109 elsiocb->iocb_cmpl = lpfc_cmpl_els_rsp; 5110 5111 rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0); 5112 if (rc == IOCB_ERROR) { 5113 lpfc_els_free_iocb(phba, elsiocb); 5114 return 1; 5115 } 5116 return 0; 5117 } 5118 5119 /** 5120 * lpfc_els_disc_adisc - Issue remaining adisc iocbs to npr nodes of a vport 5121 * @vport: pointer to a host virtual N_Port data structure. 5122 * 5123 * This routine issues Address Discover (ADISC) ELS commands to those 5124 * N_Ports which are in node port recovery state and ADISC has not been issued 5125 * for the @vport. Each time an ELS ADISC IOCB is issued by invoking the 5126 * lpfc_issue_els_adisc() routine, the per @vport number of discover count 5127 * (num_disc_nodes) shall be incremented. If the num_disc_nodes reaches a 5128 * pre-configured threshold (cfg_discovery_threads), the @vport fc_flag will 5129 * be marked with FC_NLP_MORE bit and the process of issuing remaining ADISC 5130 * IOCBs quit for later pick up. On the other hand, after walking through 5131 * all the ndlps with the @vport and there is none ADISC IOCB issued, the 5132 * @vport fc_flag shall be cleared with FC_NLP_MORE bit indicating there is 5133 * no more ADISC need to be sent. 5134 * 5135 * Return code 5136 * The number of N_Ports with adisc issued. 5137 **/ 5138 int 5139 lpfc_els_disc_adisc(struct lpfc_vport *vport) 5140 { 5141 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 5142 struct lpfc_nodelist *ndlp, *next_ndlp; 5143 int sentadisc = 0; 5144 5145 /* go thru NPR nodes and issue any remaining ELS ADISCs */ 5146 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) { 5147 if (!NLP_CHK_NODE_ACT(ndlp)) 5148 continue; 5149 if (ndlp->nlp_state == NLP_STE_NPR_NODE && 5150 (ndlp->nlp_flag & NLP_NPR_2B_DISC) != 0 && 5151 (ndlp->nlp_flag & NLP_NPR_ADISC) != 0) { 5152 spin_lock_irq(shost->host_lock); 5153 ndlp->nlp_flag &= ~NLP_NPR_ADISC; 5154 spin_unlock_irq(shost->host_lock); 5155 ndlp->nlp_prev_state = ndlp->nlp_state; 5156 lpfc_nlp_set_state(vport, ndlp, NLP_STE_ADISC_ISSUE); 5157 lpfc_issue_els_adisc(vport, ndlp, 0); 5158 sentadisc++; 5159 vport->num_disc_nodes++; 5160 if (vport->num_disc_nodes >= 5161 vport->cfg_discovery_threads) { 5162 spin_lock_irq(shost->host_lock); 5163 vport->fc_flag |= FC_NLP_MORE; 5164 spin_unlock_irq(shost->host_lock); 5165 break; 5166 } 5167 } 5168 } 5169 if (sentadisc == 0) { 5170 spin_lock_irq(shost->host_lock); 5171 vport->fc_flag &= ~FC_NLP_MORE; 5172 spin_unlock_irq(shost->host_lock); 5173 } 5174 return sentadisc; 5175 } 5176 5177 /** 5178 * lpfc_els_disc_plogi - Issue plogi for all npr nodes of a vport before adisc 5179 * @vport: pointer to a host virtual N_Port data structure. 5180 * 5181 * This routine issues Port Login (PLOGI) ELS commands to all the N_Ports 5182 * which are in node port recovery state, with a @vport. Each time an ELS 5183 * ADISC PLOGI IOCB is issued by invoking the lpfc_issue_els_plogi() routine, 5184 * the per @vport number of discover count (num_disc_nodes) shall be 5185 * incremented. If the num_disc_nodes reaches a pre-configured threshold 5186 * (cfg_discovery_threads), the @vport fc_flag will be marked with FC_NLP_MORE 5187 * bit set and quit the process of issuing remaining ADISC PLOGIN IOCBs for 5188 * later pick up. On the other hand, after walking through all the ndlps with 5189 * the @vport and there is none ADISC PLOGI IOCB issued, the @vport fc_flag 5190 * shall be cleared with the FC_NLP_MORE bit indicating there is no more ADISC 5191 * PLOGI need to be sent. 5192 * 5193 * Return code 5194 * The number of N_Ports with plogi issued. 5195 **/ 5196 int 5197 lpfc_els_disc_plogi(struct lpfc_vport *vport) 5198 { 5199 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 5200 struct lpfc_nodelist *ndlp, *next_ndlp; 5201 int sentplogi = 0; 5202 5203 /* go thru NPR nodes and issue any remaining ELS PLOGIs */ 5204 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) { 5205 if (!NLP_CHK_NODE_ACT(ndlp)) 5206 continue; 5207 if (ndlp->nlp_state == NLP_STE_NPR_NODE && 5208 (ndlp->nlp_flag & NLP_NPR_2B_DISC) != 0 && 5209 (ndlp->nlp_flag & NLP_DELAY_TMO) == 0 && 5210 (ndlp->nlp_flag & NLP_NPR_ADISC) == 0) { 5211 ndlp->nlp_prev_state = ndlp->nlp_state; 5212 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE); 5213 lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0); 5214 sentplogi++; 5215 vport->num_disc_nodes++; 5216 if (vport->num_disc_nodes >= 5217 vport->cfg_discovery_threads) { 5218 spin_lock_irq(shost->host_lock); 5219 vport->fc_flag |= FC_NLP_MORE; 5220 spin_unlock_irq(shost->host_lock); 5221 break; 5222 } 5223 } 5224 } 5225 if (sentplogi) { 5226 lpfc_set_disctmo(vport); 5227 } 5228 else { 5229 spin_lock_irq(shost->host_lock); 5230 vport->fc_flag &= ~FC_NLP_MORE; 5231 spin_unlock_irq(shost->host_lock); 5232 } 5233 return sentplogi; 5234 } 5235 5236 static uint32_t 5237 lpfc_rdp_res_link_service(struct fc_rdp_link_service_desc *desc, 5238 uint32_t word0) 5239 { 5240 5241 desc->tag = cpu_to_be32(RDP_LINK_SERVICE_DESC_TAG); 5242 desc->payload.els_req = word0; 5243 desc->length = cpu_to_be32(sizeof(desc->payload)); 5244 5245 return sizeof(struct fc_rdp_link_service_desc); 5246 } 5247 5248 static uint32_t 5249 lpfc_rdp_res_sfp_desc(struct fc_rdp_sfp_desc *desc, 5250 uint8_t *page_a0, uint8_t *page_a2) 5251 { 5252 uint16_t wavelength; 5253 uint16_t temperature; 5254 uint16_t rx_power; 5255 uint16_t tx_bias; 5256 uint16_t tx_power; 5257 uint16_t vcc; 5258 uint16_t flag = 0; 5259 struct sff_trasnceiver_codes_byte4 *trasn_code_byte4; 5260 struct sff_trasnceiver_codes_byte5 *trasn_code_byte5; 5261 5262 desc->tag = cpu_to_be32(RDP_SFP_DESC_TAG); 5263 5264 trasn_code_byte4 = (struct sff_trasnceiver_codes_byte4 *) 5265 &page_a0[SSF_TRANSCEIVER_CODE_B4]; 5266 trasn_code_byte5 = (struct sff_trasnceiver_codes_byte5 *) 5267 &page_a0[SSF_TRANSCEIVER_CODE_B5]; 5268 5269 if ((trasn_code_byte4->fc_sw_laser) || 5270 (trasn_code_byte5->fc_sw_laser_sl) || 5271 (trasn_code_byte5->fc_sw_laser_sn)) { /* check if its short WL */ 5272 flag |= (SFP_FLAG_PT_SWLASER << SFP_FLAG_PT_SHIFT); 5273 } else if (trasn_code_byte4->fc_lw_laser) { 5274 wavelength = (page_a0[SSF_WAVELENGTH_B1] << 8) | 5275 page_a0[SSF_WAVELENGTH_B0]; 5276 if (wavelength == SFP_WAVELENGTH_LC1310) 5277 flag |= SFP_FLAG_PT_LWLASER_LC1310 << SFP_FLAG_PT_SHIFT; 5278 if (wavelength == SFP_WAVELENGTH_LL1550) 5279 flag |= SFP_FLAG_PT_LWLASER_LL1550 << SFP_FLAG_PT_SHIFT; 5280 } 5281 /* check if its SFP+ */ 5282 flag |= ((page_a0[SSF_IDENTIFIER] == SFF_PG0_IDENT_SFP) ? 5283 SFP_FLAG_CT_SFP_PLUS : SFP_FLAG_CT_UNKNOWN) 5284 << SFP_FLAG_CT_SHIFT; 5285 5286 /* check if its OPTICAL */ 5287 flag |= ((page_a0[SSF_CONNECTOR] == SFF_PG0_CONNECTOR_LC) ? 5288 SFP_FLAG_IS_OPTICAL_PORT : 0) 5289 << SFP_FLAG_IS_OPTICAL_SHIFT; 5290 5291 temperature = (page_a2[SFF_TEMPERATURE_B1] << 8 | 5292 page_a2[SFF_TEMPERATURE_B0]); 5293 vcc = (page_a2[SFF_VCC_B1] << 8 | 5294 page_a2[SFF_VCC_B0]); 5295 tx_power = (page_a2[SFF_TXPOWER_B1] << 8 | 5296 page_a2[SFF_TXPOWER_B0]); 5297 tx_bias = (page_a2[SFF_TX_BIAS_CURRENT_B1] << 8 | 5298 page_a2[SFF_TX_BIAS_CURRENT_B0]); 5299 rx_power = (page_a2[SFF_RXPOWER_B1] << 8 | 5300 page_a2[SFF_RXPOWER_B0]); 5301 desc->sfp_info.temperature = cpu_to_be16(temperature); 5302 desc->sfp_info.rx_power = cpu_to_be16(rx_power); 5303 desc->sfp_info.tx_bias = cpu_to_be16(tx_bias); 5304 desc->sfp_info.tx_power = cpu_to_be16(tx_power); 5305 desc->sfp_info.vcc = cpu_to_be16(vcc); 5306 5307 desc->sfp_info.flags = cpu_to_be16(flag); 5308 desc->length = cpu_to_be32(sizeof(desc->sfp_info)); 5309 5310 return sizeof(struct fc_rdp_sfp_desc); 5311 } 5312 5313 static uint32_t 5314 lpfc_rdp_res_link_error(struct fc_rdp_link_error_status_desc *desc, 5315 READ_LNK_VAR *stat) 5316 { 5317 uint32_t type; 5318 5319 desc->tag = cpu_to_be32(RDP_LINK_ERROR_STATUS_DESC_TAG); 5320 5321 type = VN_PT_PHY_PF_PORT << VN_PT_PHY_SHIFT; 5322 5323 desc->info.port_type = cpu_to_be32(type); 5324 5325 desc->info.link_status.link_failure_cnt = 5326 cpu_to_be32(stat->linkFailureCnt); 5327 desc->info.link_status.loss_of_synch_cnt = 5328 cpu_to_be32(stat->lossSyncCnt); 5329 desc->info.link_status.loss_of_signal_cnt = 5330 cpu_to_be32(stat->lossSignalCnt); 5331 desc->info.link_status.primitive_seq_proto_err = 5332 cpu_to_be32(stat->primSeqErrCnt); 5333 desc->info.link_status.invalid_trans_word = 5334 cpu_to_be32(stat->invalidXmitWord); 5335 desc->info.link_status.invalid_crc_cnt = cpu_to_be32(stat->crcCnt); 5336 5337 desc->length = cpu_to_be32(sizeof(desc->info)); 5338 5339 return sizeof(struct fc_rdp_link_error_status_desc); 5340 } 5341 5342 static uint32_t 5343 lpfc_rdp_res_bbc_desc(struct fc_rdp_bbc_desc *desc, READ_LNK_VAR *stat, 5344 struct lpfc_vport *vport) 5345 { 5346 uint32_t bbCredit; 5347 5348 desc->tag = cpu_to_be32(RDP_BBC_DESC_TAG); 5349 5350 bbCredit = vport->fc_sparam.cmn.bbCreditLsb | 5351 (vport->fc_sparam.cmn.bbCreditMsb << 8); 5352 desc->bbc_info.port_bbc = cpu_to_be32(bbCredit); 5353 if (vport->phba->fc_topology != LPFC_TOPOLOGY_LOOP) { 5354 bbCredit = vport->phba->fc_fabparam.cmn.bbCreditLsb | 5355 (vport->phba->fc_fabparam.cmn.bbCreditMsb << 8); 5356 desc->bbc_info.attached_port_bbc = cpu_to_be32(bbCredit); 5357 } else { 5358 desc->bbc_info.attached_port_bbc = 0; 5359 } 5360 5361 desc->bbc_info.rtt = 0; 5362 desc->length = cpu_to_be32(sizeof(desc->bbc_info)); 5363 5364 return sizeof(struct fc_rdp_bbc_desc); 5365 } 5366 5367 static uint32_t 5368 lpfc_rdp_res_oed_temp_desc(struct lpfc_hba *phba, 5369 struct fc_rdp_oed_sfp_desc *desc, uint8_t *page_a2) 5370 { 5371 uint32_t flags = 0; 5372 5373 desc->tag = cpu_to_be32(RDP_OED_DESC_TAG); 5374 5375 desc->oed_info.hi_alarm = page_a2[SSF_TEMP_HIGH_ALARM]; 5376 desc->oed_info.lo_alarm = page_a2[SSF_TEMP_LOW_ALARM]; 5377 desc->oed_info.hi_warning = page_a2[SSF_TEMP_HIGH_WARNING]; 5378 desc->oed_info.lo_warning = page_a2[SSF_TEMP_LOW_WARNING]; 5379 5380 if (phba->sfp_alarm & LPFC_TRANSGRESSION_HIGH_TEMPERATURE) 5381 flags |= RDP_OET_HIGH_ALARM; 5382 if (phba->sfp_alarm & LPFC_TRANSGRESSION_LOW_TEMPERATURE) 5383 flags |= RDP_OET_LOW_ALARM; 5384 if (phba->sfp_warning & LPFC_TRANSGRESSION_HIGH_TEMPERATURE) 5385 flags |= RDP_OET_HIGH_WARNING; 5386 if (phba->sfp_warning & LPFC_TRANSGRESSION_LOW_TEMPERATURE) 5387 flags |= RDP_OET_LOW_WARNING; 5388 5389 flags |= ((0xf & RDP_OED_TEMPERATURE) << RDP_OED_TYPE_SHIFT); 5390 desc->oed_info.function_flags = cpu_to_be32(flags); 5391 desc->length = cpu_to_be32(sizeof(desc->oed_info)); 5392 return sizeof(struct fc_rdp_oed_sfp_desc); 5393 } 5394 5395 static uint32_t 5396 lpfc_rdp_res_oed_voltage_desc(struct lpfc_hba *phba, 5397 struct fc_rdp_oed_sfp_desc *desc, 5398 uint8_t *page_a2) 5399 { 5400 uint32_t flags = 0; 5401 5402 desc->tag = cpu_to_be32(RDP_OED_DESC_TAG); 5403 5404 desc->oed_info.hi_alarm = page_a2[SSF_VOLTAGE_HIGH_ALARM]; 5405 desc->oed_info.lo_alarm = page_a2[SSF_VOLTAGE_LOW_ALARM]; 5406 desc->oed_info.hi_warning = page_a2[SSF_VOLTAGE_HIGH_WARNING]; 5407 desc->oed_info.lo_warning = page_a2[SSF_VOLTAGE_LOW_WARNING]; 5408 5409 if (phba->sfp_alarm & LPFC_TRANSGRESSION_HIGH_VOLTAGE) 5410 flags |= RDP_OET_HIGH_ALARM; 5411 if (phba->sfp_alarm & LPFC_TRANSGRESSION_LOW_VOLTAGE) 5412 flags |= RDP_OET_LOW_ALARM; 5413 if (phba->sfp_warning & LPFC_TRANSGRESSION_HIGH_VOLTAGE) 5414 flags |= RDP_OET_HIGH_WARNING; 5415 if (phba->sfp_warning & LPFC_TRANSGRESSION_LOW_VOLTAGE) 5416 flags |= RDP_OET_LOW_WARNING; 5417 5418 flags |= ((0xf & RDP_OED_VOLTAGE) << RDP_OED_TYPE_SHIFT); 5419 desc->oed_info.function_flags = cpu_to_be32(flags); 5420 desc->length = cpu_to_be32(sizeof(desc->oed_info)); 5421 return sizeof(struct fc_rdp_oed_sfp_desc); 5422 } 5423 5424 static uint32_t 5425 lpfc_rdp_res_oed_txbias_desc(struct lpfc_hba *phba, 5426 struct fc_rdp_oed_sfp_desc *desc, 5427 uint8_t *page_a2) 5428 { 5429 uint32_t flags = 0; 5430 5431 desc->tag = cpu_to_be32(RDP_OED_DESC_TAG); 5432 5433 desc->oed_info.hi_alarm = page_a2[SSF_BIAS_HIGH_ALARM]; 5434 desc->oed_info.lo_alarm = page_a2[SSF_BIAS_LOW_ALARM]; 5435 desc->oed_info.hi_warning = page_a2[SSF_BIAS_HIGH_WARNING]; 5436 desc->oed_info.lo_warning = page_a2[SSF_BIAS_LOW_WARNING]; 5437 5438 if (phba->sfp_alarm & LPFC_TRANSGRESSION_HIGH_TXBIAS) 5439 flags |= RDP_OET_HIGH_ALARM; 5440 if (phba->sfp_alarm & LPFC_TRANSGRESSION_LOW_TXBIAS) 5441 flags |= RDP_OET_LOW_ALARM; 5442 if (phba->sfp_warning & LPFC_TRANSGRESSION_HIGH_TXBIAS) 5443 flags |= RDP_OET_HIGH_WARNING; 5444 if (phba->sfp_warning & LPFC_TRANSGRESSION_LOW_TXBIAS) 5445 flags |= RDP_OET_LOW_WARNING; 5446 5447 flags |= ((0xf & RDP_OED_TXBIAS) << RDP_OED_TYPE_SHIFT); 5448 desc->oed_info.function_flags = cpu_to_be32(flags); 5449 desc->length = cpu_to_be32(sizeof(desc->oed_info)); 5450 return sizeof(struct fc_rdp_oed_sfp_desc); 5451 } 5452 5453 static uint32_t 5454 lpfc_rdp_res_oed_txpower_desc(struct lpfc_hba *phba, 5455 struct fc_rdp_oed_sfp_desc *desc, 5456 uint8_t *page_a2) 5457 { 5458 uint32_t flags = 0; 5459 5460 desc->tag = cpu_to_be32(RDP_OED_DESC_TAG); 5461 5462 desc->oed_info.hi_alarm = page_a2[SSF_TXPOWER_HIGH_ALARM]; 5463 desc->oed_info.lo_alarm = page_a2[SSF_TXPOWER_LOW_ALARM]; 5464 desc->oed_info.hi_warning = page_a2[SSF_TXPOWER_HIGH_WARNING]; 5465 desc->oed_info.lo_warning = page_a2[SSF_TXPOWER_LOW_WARNING]; 5466 5467 if (phba->sfp_alarm & LPFC_TRANSGRESSION_HIGH_TXPOWER) 5468 flags |= RDP_OET_HIGH_ALARM; 5469 if (phba->sfp_alarm & LPFC_TRANSGRESSION_LOW_TXPOWER) 5470 flags |= RDP_OET_LOW_ALARM; 5471 if (phba->sfp_warning & LPFC_TRANSGRESSION_HIGH_TXPOWER) 5472 flags |= RDP_OET_HIGH_WARNING; 5473 if (phba->sfp_warning & LPFC_TRANSGRESSION_LOW_TXPOWER) 5474 flags |= RDP_OET_LOW_WARNING; 5475 5476 flags |= ((0xf & RDP_OED_TXPOWER) << RDP_OED_TYPE_SHIFT); 5477 desc->oed_info.function_flags = cpu_to_be32(flags); 5478 desc->length = cpu_to_be32(sizeof(desc->oed_info)); 5479 return sizeof(struct fc_rdp_oed_sfp_desc); 5480 } 5481 5482 5483 static uint32_t 5484 lpfc_rdp_res_oed_rxpower_desc(struct lpfc_hba *phba, 5485 struct fc_rdp_oed_sfp_desc *desc, 5486 uint8_t *page_a2) 5487 { 5488 uint32_t flags = 0; 5489 5490 desc->tag = cpu_to_be32(RDP_OED_DESC_TAG); 5491 5492 desc->oed_info.hi_alarm = page_a2[SSF_RXPOWER_HIGH_ALARM]; 5493 desc->oed_info.lo_alarm = page_a2[SSF_RXPOWER_LOW_ALARM]; 5494 desc->oed_info.hi_warning = page_a2[SSF_RXPOWER_HIGH_WARNING]; 5495 desc->oed_info.lo_warning = page_a2[SSF_RXPOWER_LOW_WARNING]; 5496 5497 if (phba->sfp_alarm & LPFC_TRANSGRESSION_HIGH_RXPOWER) 5498 flags |= RDP_OET_HIGH_ALARM; 5499 if (phba->sfp_alarm & LPFC_TRANSGRESSION_LOW_RXPOWER) 5500 flags |= RDP_OET_LOW_ALARM; 5501 if (phba->sfp_warning & LPFC_TRANSGRESSION_HIGH_RXPOWER) 5502 flags |= RDP_OET_HIGH_WARNING; 5503 if (phba->sfp_warning & LPFC_TRANSGRESSION_LOW_RXPOWER) 5504 flags |= RDP_OET_LOW_WARNING; 5505 5506 flags |= ((0xf & RDP_OED_RXPOWER) << RDP_OED_TYPE_SHIFT); 5507 desc->oed_info.function_flags = cpu_to_be32(flags); 5508 desc->length = cpu_to_be32(sizeof(desc->oed_info)); 5509 return sizeof(struct fc_rdp_oed_sfp_desc); 5510 } 5511 5512 static uint32_t 5513 lpfc_rdp_res_opd_desc(struct fc_rdp_opd_sfp_desc *desc, 5514 uint8_t *page_a0, struct lpfc_vport *vport) 5515 { 5516 desc->tag = cpu_to_be32(RDP_OPD_DESC_TAG); 5517 memcpy(desc->opd_info.vendor_name, &page_a0[SSF_VENDOR_NAME], 16); 5518 memcpy(desc->opd_info.model_number, &page_a0[SSF_VENDOR_PN], 16); 5519 memcpy(desc->opd_info.serial_number, &page_a0[SSF_VENDOR_SN], 16); 5520 memcpy(desc->opd_info.revision, &page_a0[SSF_VENDOR_REV], 4); 5521 memcpy(desc->opd_info.date, &page_a0[SSF_DATE_CODE], 8); 5522 desc->length = cpu_to_be32(sizeof(desc->opd_info)); 5523 return sizeof(struct fc_rdp_opd_sfp_desc); 5524 } 5525 5526 static uint32_t 5527 lpfc_rdp_res_fec_desc(struct fc_fec_rdp_desc *desc, READ_LNK_VAR *stat) 5528 { 5529 if (bf_get(lpfc_read_link_stat_gec2, stat) == 0) 5530 return 0; 5531 desc->tag = cpu_to_be32(RDP_FEC_DESC_TAG); 5532 5533 desc->info.CorrectedBlocks = 5534 cpu_to_be32(stat->fecCorrBlkCount); 5535 desc->info.UncorrectableBlocks = 5536 cpu_to_be32(stat->fecUncorrBlkCount); 5537 5538 desc->length = cpu_to_be32(sizeof(desc->info)); 5539 5540 return sizeof(struct fc_fec_rdp_desc); 5541 } 5542 5543 static uint32_t 5544 lpfc_rdp_res_speed(struct fc_rdp_port_speed_desc *desc, struct lpfc_hba *phba) 5545 { 5546 uint16_t rdp_cap = 0; 5547 uint16_t rdp_speed; 5548 5549 desc->tag = cpu_to_be32(RDP_PORT_SPEED_DESC_TAG); 5550 5551 switch (phba->fc_linkspeed) { 5552 case LPFC_LINK_SPEED_1GHZ: 5553 rdp_speed = RDP_PS_1GB; 5554 break; 5555 case LPFC_LINK_SPEED_2GHZ: 5556 rdp_speed = RDP_PS_2GB; 5557 break; 5558 case LPFC_LINK_SPEED_4GHZ: 5559 rdp_speed = RDP_PS_4GB; 5560 break; 5561 case LPFC_LINK_SPEED_8GHZ: 5562 rdp_speed = RDP_PS_8GB; 5563 break; 5564 case LPFC_LINK_SPEED_10GHZ: 5565 rdp_speed = RDP_PS_10GB; 5566 break; 5567 case LPFC_LINK_SPEED_16GHZ: 5568 rdp_speed = RDP_PS_16GB; 5569 break; 5570 case LPFC_LINK_SPEED_32GHZ: 5571 rdp_speed = RDP_PS_32GB; 5572 break; 5573 case LPFC_LINK_SPEED_64GHZ: 5574 rdp_speed = RDP_PS_64GB; 5575 break; 5576 default: 5577 rdp_speed = RDP_PS_UNKNOWN; 5578 break; 5579 } 5580 5581 desc->info.port_speed.speed = cpu_to_be16(rdp_speed); 5582 5583 if (phba->lmt & LMT_128Gb) 5584 rdp_cap |= RDP_PS_128GB; 5585 if (phba->lmt & LMT_64Gb) 5586 rdp_cap |= RDP_PS_64GB; 5587 if (phba->lmt & LMT_32Gb) 5588 rdp_cap |= RDP_PS_32GB; 5589 if (phba->lmt & LMT_16Gb) 5590 rdp_cap |= RDP_PS_16GB; 5591 if (phba->lmt & LMT_10Gb) 5592 rdp_cap |= RDP_PS_10GB; 5593 if (phba->lmt & LMT_8Gb) 5594 rdp_cap |= RDP_PS_8GB; 5595 if (phba->lmt & LMT_4Gb) 5596 rdp_cap |= RDP_PS_4GB; 5597 if (phba->lmt & LMT_2Gb) 5598 rdp_cap |= RDP_PS_2GB; 5599 if (phba->lmt & LMT_1Gb) 5600 rdp_cap |= RDP_PS_1GB; 5601 5602 if (rdp_cap == 0) 5603 rdp_cap = RDP_CAP_UNKNOWN; 5604 if (phba->cfg_link_speed != LPFC_USER_LINK_SPEED_AUTO) 5605 rdp_cap |= RDP_CAP_USER_CONFIGURED; 5606 5607 desc->info.port_speed.capabilities = cpu_to_be16(rdp_cap); 5608 desc->length = cpu_to_be32(sizeof(desc->info)); 5609 return sizeof(struct fc_rdp_port_speed_desc); 5610 } 5611 5612 static uint32_t 5613 lpfc_rdp_res_diag_port_names(struct fc_rdp_port_name_desc *desc, 5614 struct lpfc_vport *vport) 5615 { 5616 5617 desc->tag = cpu_to_be32(RDP_PORT_NAMES_DESC_TAG); 5618 5619 memcpy(desc->port_names.wwnn, &vport->fc_nodename, 5620 sizeof(desc->port_names.wwnn)); 5621 5622 memcpy(desc->port_names.wwpn, &vport->fc_portname, 5623 sizeof(desc->port_names.wwpn)); 5624 5625 desc->length = cpu_to_be32(sizeof(desc->port_names)); 5626 return sizeof(struct fc_rdp_port_name_desc); 5627 } 5628 5629 static uint32_t 5630 lpfc_rdp_res_attach_port_names(struct fc_rdp_port_name_desc *desc, 5631 struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) 5632 { 5633 5634 desc->tag = cpu_to_be32(RDP_PORT_NAMES_DESC_TAG); 5635 if (vport->fc_flag & FC_FABRIC) { 5636 memcpy(desc->port_names.wwnn, &vport->fabric_nodename, 5637 sizeof(desc->port_names.wwnn)); 5638 5639 memcpy(desc->port_names.wwpn, &vport->fabric_portname, 5640 sizeof(desc->port_names.wwpn)); 5641 } else { /* Point to Point */ 5642 memcpy(desc->port_names.wwnn, &ndlp->nlp_nodename, 5643 sizeof(desc->port_names.wwnn)); 5644 5645 memcpy(desc->port_names.wwnn, &ndlp->nlp_portname, 5646 sizeof(desc->port_names.wwpn)); 5647 } 5648 5649 desc->length = cpu_to_be32(sizeof(desc->port_names)); 5650 return sizeof(struct fc_rdp_port_name_desc); 5651 } 5652 5653 static void 5654 lpfc_els_rdp_cmpl(struct lpfc_hba *phba, struct lpfc_rdp_context *rdp_context, 5655 int status) 5656 { 5657 struct lpfc_nodelist *ndlp = rdp_context->ndlp; 5658 struct lpfc_vport *vport = ndlp->vport; 5659 struct lpfc_iocbq *elsiocb; 5660 struct ulp_bde64 *bpl; 5661 IOCB_t *icmd; 5662 uint8_t *pcmd; 5663 struct ls_rjt *stat; 5664 struct fc_rdp_res_frame *rdp_res; 5665 uint32_t cmdsize, len; 5666 uint16_t *flag_ptr; 5667 int rc; 5668 5669 if (status != SUCCESS) 5670 goto error; 5671 5672 /* This will change once we know the true size of the RDP payload */ 5673 cmdsize = sizeof(struct fc_rdp_res_frame); 5674 5675 elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, 5676 lpfc_max_els_tries, rdp_context->ndlp, 5677 rdp_context->ndlp->nlp_DID, ELS_CMD_ACC); 5678 lpfc_nlp_put(ndlp); 5679 if (!elsiocb) 5680 goto free_rdp_context; 5681 5682 icmd = &elsiocb->iocb; 5683 icmd->ulpContext = rdp_context->rx_id; 5684 icmd->unsli3.rcvsli3.ox_id = rdp_context->ox_id; 5685 5686 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, 5687 "2171 Xmit RDP response tag x%x xri x%x, " 5688 "did x%x, nlp_flag x%x, nlp_state x%x, rpi x%x", 5689 elsiocb->iotag, elsiocb->iocb.ulpContext, 5690 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state, 5691 ndlp->nlp_rpi); 5692 rdp_res = (struct fc_rdp_res_frame *) 5693 (((struct lpfc_dmabuf *) elsiocb->context2)->virt); 5694 pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt); 5695 memset(pcmd, 0, sizeof(struct fc_rdp_res_frame)); 5696 *((uint32_t *) (pcmd)) = ELS_CMD_ACC; 5697 5698 /* Update Alarm and Warning */ 5699 flag_ptr = (uint16_t *)(rdp_context->page_a2 + SSF_ALARM_FLAGS); 5700 phba->sfp_alarm |= *flag_ptr; 5701 flag_ptr = (uint16_t *)(rdp_context->page_a2 + SSF_WARNING_FLAGS); 5702 phba->sfp_warning |= *flag_ptr; 5703 5704 /* For RDP payload */ 5705 len = 8; 5706 len += lpfc_rdp_res_link_service((struct fc_rdp_link_service_desc *) 5707 (len + pcmd), ELS_CMD_RDP); 5708 5709 len += lpfc_rdp_res_sfp_desc((struct fc_rdp_sfp_desc *)(len + pcmd), 5710 rdp_context->page_a0, rdp_context->page_a2); 5711 len += lpfc_rdp_res_speed((struct fc_rdp_port_speed_desc *)(len + pcmd), 5712 phba); 5713 len += lpfc_rdp_res_link_error((struct fc_rdp_link_error_status_desc *) 5714 (len + pcmd), &rdp_context->link_stat); 5715 len += lpfc_rdp_res_diag_port_names((struct fc_rdp_port_name_desc *) 5716 (len + pcmd), vport); 5717 len += lpfc_rdp_res_attach_port_names((struct fc_rdp_port_name_desc *) 5718 (len + pcmd), vport, ndlp); 5719 len += lpfc_rdp_res_fec_desc((struct fc_fec_rdp_desc *)(len + pcmd), 5720 &rdp_context->link_stat); 5721 len += lpfc_rdp_res_bbc_desc((struct fc_rdp_bbc_desc *)(len + pcmd), 5722 &rdp_context->link_stat, vport); 5723 len += lpfc_rdp_res_oed_temp_desc(phba, 5724 (struct fc_rdp_oed_sfp_desc *)(len + pcmd), 5725 rdp_context->page_a2); 5726 len += lpfc_rdp_res_oed_voltage_desc(phba, 5727 (struct fc_rdp_oed_sfp_desc *)(len + pcmd), 5728 rdp_context->page_a2); 5729 len += lpfc_rdp_res_oed_txbias_desc(phba, 5730 (struct fc_rdp_oed_sfp_desc *)(len + pcmd), 5731 rdp_context->page_a2); 5732 len += lpfc_rdp_res_oed_txpower_desc(phba, 5733 (struct fc_rdp_oed_sfp_desc *)(len + pcmd), 5734 rdp_context->page_a2); 5735 len += lpfc_rdp_res_oed_rxpower_desc(phba, 5736 (struct fc_rdp_oed_sfp_desc *)(len + pcmd), 5737 rdp_context->page_a2); 5738 len += lpfc_rdp_res_opd_desc((struct fc_rdp_opd_sfp_desc *)(len + pcmd), 5739 rdp_context->page_a0, vport); 5740 5741 rdp_res->length = cpu_to_be32(len - 8); 5742 elsiocb->iocb_cmpl = lpfc_cmpl_els_rsp; 5743 5744 /* Now that we know the true size of the payload, update the BPL */ 5745 bpl = (struct ulp_bde64 *) 5746 (((struct lpfc_dmabuf *)(elsiocb->context3))->virt); 5747 bpl->tus.f.bdeSize = len; 5748 bpl->tus.f.bdeFlags = 0; 5749 bpl->tus.w = le32_to_cpu(bpl->tus.w); 5750 5751 phba->fc_stat.elsXmitACC++; 5752 rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0); 5753 if (rc == IOCB_ERROR) 5754 lpfc_els_free_iocb(phba, elsiocb); 5755 5756 kfree(rdp_context); 5757 5758 return; 5759 error: 5760 cmdsize = 2 * sizeof(uint32_t); 5761 elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, lpfc_max_els_tries, 5762 ndlp, ndlp->nlp_DID, ELS_CMD_LS_RJT); 5763 lpfc_nlp_put(ndlp); 5764 if (!elsiocb) 5765 goto free_rdp_context; 5766 5767 icmd = &elsiocb->iocb; 5768 icmd->ulpContext = rdp_context->rx_id; 5769 icmd->unsli3.rcvsli3.ox_id = rdp_context->ox_id; 5770 pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt); 5771 5772 *((uint32_t *) (pcmd)) = ELS_CMD_LS_RJT; 5773 stat = (struct ls_rjt *)(pcmd + sizeof(uint32_t)); 5774 stat->un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC; 5775 5776 phba->fc_stat.elsXmitLSRJT++; 5777 elsiocb->iocb_cmpl = lpfc_cmpl_els_rsp; 5778 rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0); 5779 5780 if (rc == IOCB_ERROR) 5781 lpfc_els_free_iocb(phba, elsiocb); 5782 free_rdp_context: 5783 kfree(rdp_context); 5784 } 5785 5786 static int 5787 lpfc_get_rdp_info(struct lpfc_hba *phba, struct lpfc_rdp_context *rdp_context) 5788 { 5789 LPFC_MBOXQ_t *mbox = NULL; 5790 int rc; 5791 5792 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 5793 if (!mbox) { 5794 lpfc_printf_log(phba, KERN_WARNING, LOG_MBOX | LOG_ELS, 5795 "7105 failed to allocate mailbox memory"); 5796 return 1; 5797 } 5798 5799 if (lpfc_sli4_dump_page_a0(phba, mbox)) 5800 goto prep_mbox_fail; 5801 mbox->vport = rdp_context->ndlp->vport; 5802 mbox->mbox_cmpl = lpfc_mbx_cmpl_rdp_page_a0; 5803 mbox->ctx_ndlp = (struct lpfc_rdp_context *)rdp_context; 5804 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT); 5805 if (rc == MBX_NOT_FINISHED) 5806 goto issue_mbox_fail; 5807 5808 return 0; 5809 5810 prep_mbox_fail: 5811 issue_mbox_fail: 5812 mempool_free(mbox, phba->mbox_mem_pool); 5813 return 1; 5814 } 5815 5816 /* 5817 * lpfc_els_rcv_rdp - Process an unsolicited RDP ELS. 5818 * @vport: pointer to a host virtual N_Port data structure. 5819 * @cmdiocb: pointer to lpfc command iocb data structure. 5820 * @ndlp: pointer to a node-list data structure. 5821 * 5822 * This routine processes an unsolicited RDP(Read Diagnostic Parameters) 5823 * IOCB. First, the payload of the unsolicited RDP is checked. 5824 * Then it will (1) send MBX_DUMP_MEMORY, Embedded DMP_LMSD sub command TYPE-3 5825 * for Page A0, (2) send MBX_DUMP_MEMORY, DMP_LMSD for Page A2, 5826 * (3) send MBX_READ_LNK_STAT to get link stat, (4) Call lpfc_els_rdp_cmpl 5827 * gather all data and send RDP response. 5828 * 5829 * Return code 5830 * 0 - Sent the acc response 5831 * 1 - Sent the reject response. 5832 */ 5833 static int 5834 lpfc_els_rcv_rdp(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb, 5835 struct lpfc_nodelist *ndlp) 5836 { 5837 struct lpfc_hba *phba = vport->phba; 5838 struct lpfc_dmabuf *pcmd; 5839 uint8_t rjt_err, rjt_expl = LSEXP_NOTHING_MORE; 5840 struct fc_rdp_req_frame *rdp_req; 5841 struct lpfc_rdp_context *rdp_context; 5842 IOCB_t *cmd = NULL; 5843 struct ls_rjt stat; 5844 5845 if (phba->sli_rev < LPFC_SLI_REV4 || 5846 bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) < 5847 LPFC_SLI_INTF_IF_TYPE_2) { 5848 rjt_err = LSRJT_UNABLE_TPC; 5849 rjt_expl = LSEXP_REQ_UNSUPPORTED; 5850 goto error; 5851 } 5852 5853 if (phba->sli_rev < LPFC_SLI_REV4 || (phba->hba_flag & HBA_FCOE_MODE)) { 5854 rjt_err = LSRJT_UNABLE_TPC; 5855 rjt_expl = LSEXP_REQ_UNSUPPORTED; 5856 goto error; 5857 } 5858 5859 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2; 5860 rdp_req = (struct fc_rdp_req_frame *) pcmd->virt; 5861 5862 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, 5863 "2422 ELS RDP Request " 5864 "dec len %d tag x%x port_id %d len %d\n", 5865 be32_to_cpu(rdp_req->rdp_des_length), 5866 be32_to_cpu(rdp_req->nport_id_desc.tag), 5867 be32_to_cpu(rdp_req->nport_id_desc.nport_id), 5868 be32_to_cpu(rdp_req->nport_id_desc.length)); 5869 5870 if (sizeof(struct fc_rdp_nport_desc) != 5871 be32_to_cpu(rdp_req->rdp_des_length)) 5872 goto rjt_logerr; 5873 if (RDP_N_PORT_DESC_TAG != be32_to_cpu(rdp_req->nport_id_desc.tag)) 5874 goto rjt_logerr; 5875 if (RDP_NPORT_ID_SIZE != 5876 be32_to_cpu(rdp_req->nport_id_desc.length)) 5877 goto rjt_logerr; 5878 rdp_context = kzalloc(sizeof(struct lpfc_rdp_context), GFP_KERNEL); 5879 if (!rdp_context) { 5880 rjt_err = LSRJT_UNABLE_TPC; 5881 goto error; 5882 } 5883 5884 cmd = &cmdiocb->iocb; 5885 rdp_context->ndlp = lpfc_nlp_get(ndlp); 5886 rdp_context->ox_id = cmd->unsli3.rcvsli3.ox_id; 5887 rdp_context->rx_id = cmd->ulpContext; 5888 rdp_context->cmpl = lpfc_els_rdp_cmpl; 5889 if (lpfc_get_rdp_info(phba, rdp_context)) { 5890 lpfc_printf_vlog(ndlp->vport, KERN_WARNING, LOG_ELS, 5891 "2423 Unable to send mailbox"); 5892 kfree(rdp_context); 5893 rjt_err = LSRJT_UNABLE_TPC; 5894 lpfc_nlp_put(ndlp); 5895 goto error; 5896 } 5897 5898 return 0; 5899 5900 rjt_logerr: 5901 rjt_err = LSRJT_LOGICAL_ERR; 5902 5903 error: 5904 memset(&stat, 0, sizeof(stat)); 5905 stat.un.b.lsRjtRsnCode = rjt_err; 5906 stat.un.b.lsRjtRsnCodeExp = rjt_expl; 5907 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL); 5908 return 1; 5909 } 5910 5911 5912 static void 5913 lpfc_els_lcb_rsp(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 5914 { 5915 MAILBOX_t *mb; 5916 IOCB_t *icmd; 5917 uint8_t *pcmd; 5918 struct lpfc_iocbq *elsiocb; 5919 struct lpfc_nodelist *ndlp; 5920 struct ls_rjt *stat; 5921 union lpfc_sli4_cfg_shdr *shdr; 5922 struct lpfc_lcb_context *lcb_context; 5923 struct fc_lcb_res_frame *lcb_res; 5924 uint32_t cmdsize, shdr_status, shdr_add_status; 5925 int rc; 5926 5927 mb = &pmb->u.mb; 5928 lcb_context = (struct lpfc_lcb_context *)pmb->ctx_ndlp; 5929 ndlp = lcb_context->ndlp; 5930 pmb->ctx_ndlp = NULL; 5931 pmb->ctx_buf = NULL; 5932 5933 shdr = (union lpfc_sli4_cfg_shdr *) 5934 &pmb->u.mqe.un.beacon_config.header.cfg_shdr; 5935 shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response); 5936 shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response); 5937 5938 lpfc_printf_log(phba, KERN_INFO, LOG_MBOX, 5939 "0194 SET_BEACON_CONFIG mailbox " 5940 "completed with status x%x add_status x%x," 5941 " mbx status x%x\n", 5942 shdr_status, shdr_add_status, mb->mbxStatus); 5943 5944 if ((mb->mbxStatus != MBX_SUCCESS) || shdr_status || 5945 (shdr_add_status == ADD_STATUS_OPERATION_ALREADY_ACTIVE) || 5946 (shdr_add_status == ADD_STATUS_INVALID_REQUEST)) { 5947 mempool_free(pmb, phba->mbox_mem_pool); 5948 goto error; 5949 } 5950 5951 mempool_free(pmb, phba->mbox_mem_pool); 5952 cmdsize = sizeof(struct fc_lcb_res_frame); 5953 elsiocb = lpfc_prep_els_iocb(phba->pport, 0, cmdsize, 5954 lpfc_max_els_tries, ndlp, 5955 ndlp->nlp_DID, ELS_CMD_ACC); 5956 5957 /* Decrement the ndlp reference count from previous mbox command */ 5958 lpfc_nlp_put(ndlp); 5959 5960 if (!elsiocb) 5961 goto free_lcb_context; 5962 5963 lcb_res = (struct fc_lcb_res_frame *) 5964 (((struct lpfc_dmabuf *)elsiocb->context2)->virt); 5965 5966 memset(lcb_res, 0, sizeof(struct fc_lcb_res_frame)); 5967 icmd = &elsiocb->iocb; 5968 icmd->ulpContext = lcb_context->rx_id; 5969 icmd->unsli3.rcvsli3.ox_id = lcb_context->ox_id; 5970 5971 pcmd = (uint8_t *)(((struct lpfc_dmabuf *)elsiocb->context2)->virt); 5972 *((uint32_t *)(pcmd)) = ELS_CMD_ACC; 5973 lcb_res->lcb_sub_command = lcb_context->sub_command; 5974 lcb_res->lcb_type = lcb_context->type; 5975 lcb_res->capability = lcb_context->capability; 5976 lcb_res->lcb_frequency = lcb_context->frequency; 5977 lcb_res->lcb_duration = lcb_context->duration; 5978 elsiocb->iocb_cmpl = lpfc_cmpl_els_rsp; 5979 phba->fc_stat.elsXmitACC++; 5980 rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0); 5981 if (rc == IOCB_ERROR) 5982 lpfc_els_free_iocb(phba, elsiocb); 5983 5984 kfree(lcb_context); 5985 return; 5986 5987 error: 5988 cmdsize = sizeof(struct fc_lcb_res_frame); 5989 elsiocb = lpfc_prep_els_iocb(phba->pport, 0, cmdsize, 5990 lpfc_max_els_tries, ndlp, 5991 ndlp->nlp_DID, ELS_CMD_LS_RJT); 5992 lpfc_nlp_put(ndlp); 5993 if (!elsiocb) 5994 goto free_lcb_context; 5995 5996 icmd = &elsiocb->iocb; 5997 icmd->ulpContext = lcb_context->rx_id; 5998 icmd->unsli3.rcvsli3.ox_id = lcb_context->ox_id; 5999 pcmd = (uint8_t *)(((struct lpfc_dmabuf *)elsiocb->context2)->virt); 6000 6001 *((uint32_t *)(pcmd)) = ELS_CMD_LS_RJT; 6002 stat = (struct ls_rjt *)(pcmd + sizeof(uint32_t)); 6003 stat->un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC; 6004 6005 if (shdr_add_status == ADD_STATUS_OPERATION_ALREADY_ACTIVE) 6006 stat->un.b.lsRjtRsnCodeExp = LSEXP_CMD_IN_PROGRESS; 6007 6008 elsiocb->iocb_cmpl = lpfc_cmpl_els_rsp; 6009 phba->fc_stat.elsXmitLSRJT++; 6010 rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0); 6011 if (rc == IOCB_ERROR) 6012 lpfc_els_free_iocb(phba, elsiocb); 6013 free_lcb_context: 6014 kfree(lcb_context); 6015 } 6016 6017 static int 6018 lpfc_sli4_set_beacon(struct lpfc_vport *vport, 6019 struct lpfc_lcb_context *lcb_context, 6020 uint32_t beacon_state) 6021 { 6022 struct lpfc_hba *phba = vport->phba; 6023 union lpfc_sli4_cfg_shdr *cfg_shdr; 6024 LPFC_MBOXQ_t *mbox = NULL; 6025 uint32_t len; 6026 int rc; 6027 6028 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 6029 if (!mbox) 6030 return 1; 6031 6032 cfg_shdr = &mbox->u.mqe.un.sli4_config.header.cfg_shdr; 6033 len = sizeof(struct lpfc_mbx_set_beacon_config) - 6034 sizeof(struct lpfc_sli4_cfg_mhdr); 6035 lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_COMMON, 6036 LPFC_MBOX_OPCODE_SET_BEACON_CONFIG, len, 6037 LPFC_SLI4_MBX_EMBED); 6038 mbox->ctx_ndlp = (void *)lcb_context; 6039 mbox->vport = phba->pport; 6040 mbox->mbox_cmpl = lpfc_els_lcb_rsp; 6041 bf_set(lpfc_mbx_set_beacon_port_num, &mbox->u.mqe.un.beacon_config, 6042 phba->sli4_hba.physical_port); 6043 bf_set(lpfc_mbx_set_beacon_state, &mbox->u.mqe.un.beacon_config, 6044 beacon_state); 6045 mbox->u.mqe.un.beacon_config.word5 = 0; /* Reserved */ 6046 6047 /* 6048 * Check bv1s bit before issuing the mailbox 6049 * if bv1s == 1, LCB V1 supported 6050 * else, LCB V0 supported 6051 */ 6052 6053 if (phba->sli4_hba.pc_sli4_params.bv1s) { 6054 /* COMMON_SET_BEACON_CONFIG_V1 */ 6055 cfg_shdr->request.word9 = BEACON_VERSION_V1; 6056 lcb_context->capability |= LCB_CAPABILITY_DURATION; 6057 bf_set(lpfc_mbx_set_beacon_port_type, 6058 &mbox->u.mqe.un.beacon_config, 0); 6059 bf_set(lpfc_mbx_set_beacon_duration_v1, 6060 &mbox->u.mqe.un.beacon_config, 6061 be16_to_cpu(lcb_context->duration)); 6062 } else { 6063 /* COMMON_SET_BEACON_CONFIG_V0 */ 6064 if (be16_to_cpu(lcb_context->duration) != 0) { 6065 mempool_free(mbox, phba->mbox_mem_pool); 6066 return 1; 6067 } 6068 cfg_shdr->request.word9 = BEACON_VERSION_V0; 6069 lcb_context->capability &= ~(LCB_CAPABILITY_DURATION); 6070 bf_set(lpfc_mbx_set_beacon_state, 6071 &mbox->u.mqe.un.beacon_config, beacon_state); 6072 bf_set(lpfc_mbx_set_beacon_port_type, 6073 &mbox->u.mqe.un.beacon_config, 1); 6074 bf_set(lpfc_mbx_set_beacon_duration, 6075 &mbox->u.mqe.un.beacon_config, 6076 be16_to_cpu(lcb_context->duration)); 6077 } 6078 6079 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT); 6080 if (rc == MBX_NOT_FINISHED) { 6081 mempool_free(mbox, phba->mbox_mem_pool); 6082 return 1; 6083 } 6084 6085 return 0; 6086 } 6087 6088 6089 /** 6090 * lpfc_els_rcv_lcb - Process an unsolicited LCB 6091 * @vport: pointer to a host virtual N_Port data structure. 6092 * @cmdiocb: pointer to lpfc command iocb data structure. 6093 * @ndlp: pointer to a node-list data structure. 6094 * 6095 * This routine processes an unsolicited LCB(LINK CABLE BEACON) IOCB. 6096 * First, the payload of the unsolicited LCB is checked. 6097 * Then based on Subcommand beacon will either turn on or off. 6098 * 6099 * Return code 6100 * 0 - Sent the acc response 6101 * 1 - Sent the reject response. 6102 **/ 6103 static int 6104 lpfc_els_rcv_lcb(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb, 6105 struct lpfc_nodelist *ndlp) 6106 { 6107 struct lpfc_hba *phba = vport->phba; 6108 struct lpfc_dmabuf *pcmd; 6109 uint8_t *lp; 6110 struct fc_lcb_request_frame *beacon; 6111 struct lpfc_lcb_context *lcb_context; 6112 uint8_t state, rjt_err; 6113 struct ls_rjt stat; 6114 6115 pcmd = (struct lpfc_dmabuf *)cmdiocb->context2; 6116 lp = (uint8_t *)pcmd->virt; 6117 beacon = (struct fc_lcb_request_frame *)pcmd->virt; 6118 6119 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, 6120 "0192 ELS LCB Data x%x x%x x%x x%x sub x%x " 6121 "type x%x frequency %x duration x%x\n", 6122 lp[0], lp[1], lp[2], 6123 beacon->lcb_command, 6124 beacon->lcb_sub_command, 6125 beacon->lcb_type, 6126 beacon->lcb_frequency, 6127 be16_to_cpu(beacon->lcb_duration)); 6128 6129 if (beacon->lcb_sub_command != LPFC_LCB_ON && 6130 beacon->lcb_sub_command != LPFC_LCB_OFF) { 6131 rjt_err = LSRJT_CMD_UNSUPPORTED; 6132 goto rjt; 6133 } 6134 6135 if (phba->sli_rev < LPFC_SLI_REV4 || 6136 phba->hba_flag & HBA_FCOE_MODE || 6137 (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) < 6138 LPFC_SLI_INTF_IF_TYPE_2)) { 6139 rjt_err = LSRJT_CMD_UNSUPPORTED; 6140 goto rjt; 6141 } 6142 6143 lcb_context = kmalloc(sizeof(*lcb_context), GFP_KERNEL); 6144 if (!lcb_context) { 6145 rjt_err = LSRJT_UNABLE_TPC; 6146 goto rjt; 6147 } 6148 6149 state = (beacon->lcb_sub_command == LPFC_LCB_ON) ? 1 : 0; 6150 lcb_context->sub_command = beacon->lcb_sub_command; 6151 lcb_context->capability = 0; 6152 lcb_context->type = beacon->lcb_type; 6153 lcb_context->frequency = beacon->lcb_frequency; 6154 lcb_context->duration = beacon->lcb_duration; 6155 lcb_context->ox_id = cmdiocb->iocb.unsli3.rcvsli3.ox_id; 6156 lcb_context->rx_id = cmdiocb->iocb.ulpContext; 6157 lcb_context->ndlp = lpfc_nlp_get(ndlp); 6158 if (lpfc_sli4_set_beacon(vport, lcb_context, state)) { 6159 lpfc_printf_vlog(ndlp->vport, KERN_ERR, 6160 LOG_ELS, "0193 failed to send mail box"); 6161 kfree(lcb_context); 6162 lpfc_nlp_put(ndlp); 6163 rjt_err = LSRJT_UNABLE_TPC; 6164 goto rjt; 6165 } 6166 return 0; 6167 rjt: 6168 memset(&stat, 0, sizeof(stat)); 6169 stat.un.b.lsRjtRsnCode = rjt_err; 6170 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL); 6171 return 1; 6172 } 6173 6174 6175 /** 6176 * lpfc_els_flush_rscn - Clean up any rscn activities with a vport 6177 * @vport: pointer to a host virtual N_Port data structure. 6178 * 6179 * This routine cleans up any Registration State Change Notification 6180 * (RSCN) activity with a @vport. Note that the fc_rscn_flush flag of the 6181 * @vport together with the host_lock is used to prevent multiple thread 6182 * trying to access the RSCN array on a same @vport at the same time. 6183 **/ 6184 void 6185 lpfc_els_flush_rscn(struct lpfc_vport *vport) 6186 { 6187 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 6188 struct lpfc_hba *phba = vport->phba; 6189 int i; 6190 6191 spin_lock_irq(shost->host_lock); 6192 if (vport->fc_rscn_flush) { 6193 /* Another thread is walking fc_rscn_id_list on this vport */ 6194 spin_unlock_irq(shost->host_lock); 6195 return; 6196 } 6197 /* Indicate we are walking lpfc_els_flush_rscn on this vport */ 6198 vport->fc_rscn_flush = 1; 6199 spin_unlock_irq(shost->host_lock); 6200 6201 for (i = 0; i < vport->fc_rscn_id_cnt; i++) { 6202 lpfc_in_buf_free(phba, vport->fc_rscn_id_list[i]); 6203 vport->fc_rscn_id_list[i] = NULL; 6204 } 6205 spin_lock_irq(shost->host_lock); 6206 vport->fc_rscn_id_cnt = 0; 6207 vport->fc_flag &= ~(FC_RSCN_MODE | FC_RSCN_DISCOVERY); 6208 spin_unlock_irq(shost->host_lock); 6209 lpfc_can_disctmo(vport); 6210 /* Indicate we are done walking this fc_rscn_id_list */ 6211 vport->fc_rscn_flush = 0; 6212 } 6213 6214 /** 6215 * lpfc_rscn_payload_check - Check whether there is a pending rscn to a did 6216 * @vport: pointer to a host virtual N_Port data structure. 6217 * @did: remote destination port identifier. 6218 * 6219 * This routine checks whether there is any pending Registration State 6220 * Configuration Notification (RSCN) to a @did on @vport. 6221 * 6222 * Return code 6223 * None zero - The @did matched with a pending rscn 6224 * 0 - not able to match @did with a pending rscn 6225 **/ 6226 int 6227 lpfc_rscn_payload_check(struct lpfc_vport *vport, uint32_t did) 6228 { 6229 D_ID ns_did; 6230 D_ID rscn_did; 6231 uint32_t *lp; 6232 uint32_t payload_len, i; 6233 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 6234 6235 ns_did.un.word = did; 6236 6237 /* Never match fabric nodes for RSCNs */ 6238 if ((did & Fabric_DID_MASK) == Fabric_DID_MASK) 6239 return 0; 6240 6241 /* If we are doing a FULL RSCN rediscovery, match everything */ 6242 if (vport->fc_flag & FC_RSCN_DISCOVERY) 6243 return did; 6244 6245 spin_lock_irq(shost->host_lock); 6246 if (vport->fc_rscn_flush) { 6247 /* Another thread is walking fc_rscn_id_list on this vport */ 6248 spin_unlock_irq(shost->host_lock); 6249 return 0; 6250 } 6251 /* Indicate we are walking fc_rscn_id_list on this vport */ 6252 vport->fc_rscn_flush = 1; 6253 spin_unlock_irq(shost->host_lock); 6254 for (i = 0; i < vport->fc_rscn_id_cnt; i++) { 6255 lp = vport->fc_rscn_id_list[i]->virt; 6256 payload_len = be32_to_cpu(*lp++ & ~ELS_CMD_MASK); 6257 payload_len -= sizeof(uint32_t); /* take off word 0 */ 6258 while (payload_len) { 6259 rscn_did.un.word = be32_to_cpu(*lp++); 6260 payload_len -= sizeof(uint32_t); 6261 switch (rscn_did.un.b.resv & RSCN_ADDRESS_FORMAT_MASK) { 6262 case RSCN_ADDRESS_FORMAT_PORT: 6263 if ((ns_did.un.b.domain == rscn_did.un.b.domain) 6264 && (ns_did.un.b.area == rscn_did.un.b.area) 6265 && (ns_did.un.b.id == rscn_did.un.b.id)) 6266 goto return_did_out; 6267 break; 6268 case RSCN_ADDRESS_FORMAT_AREA: 6269 if ((ns_did.un.b.domain == rscn_did.un.b.domain) 6270 && (ns_did.un.b.area == rscn_did.un.b.area)) 6271 goto return_did_out; 6272 break; 6273 case RSCN_ADDRESS_FORMAT_DOMAIN: 6274 if (ns_did.un.b.domain == rscn_did.un.b.domain) 6275 goto return_did_out; 6276 break; 6277 case RSCN_ADDRESS_FORMAT_FABRIC: 6278 goto return_did_out; 6279 } 6280 } 6281 } 6282 /* Indicate we are done with walking fc_rscn_id_list on this vport */ 6283 vport->fc_rscn_flush = 0; 6284 return 0; 6285 return_did_out: 6286 /* Indicate we are done with walking fc_rscn_id_list on this vport */ 6287 vport->fc_rscn_flush = 0; 6288 return did; 6289 } 6290 6291 /** 6292 * lpfc_rscn_recovery_check - Send recovery event to vport nodes matching rscn 6293 * @vport: pointer to a host virtual N_Port data structure. 6294 * 6295 * This routine sends recovery (NLP_EVT_DEVICE_RECOVERY) event to the 6296 * state machine for a @vport's nodes that are with pending RSCN (Registration 6297 * State Change Notification). 6298 * 6299 * Return code 6300 * 0 - Successful (currently alway return 0) 6301 **/ 6302 static int 6303 lpfc_rscn_recovery_check(struct lpfc_vport *vport) 6304 { 6305 struct lpfc_nodelist *ndlp = NULL; 6306 6307 /* Move all affected nodes by pending RSCNs to NPR state. */ 6308 list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) { 6309 if (!NLP_CHK_NODE_ACT(ndlp) || 6310 (ndlp->nlp_state == NLP_STE_UNUSED_NODE) || 6311 !lpfc_rscn_payload_check(vport, ndlp->nlp_DID)) 6312 continue; 6313 6314 /* NVME Target mode does not do RSCN Recovery. */ 6315 if (vport->phba->nvmet_support) 6316 continue; 6317 6318 /* If we are in the process of doing discovery on this 6319 * NPort, let it continue on its own. 6320 */ 6321 switch (ndlp->nlp_state) { 6322 case NLP_STE_PLOGI_ISSUE: 6323 case NLP_STE_ADISC_ISSUE: 6324 case NLP_STE_REG_LOGIN_ISSUE: 6325 case NLP_STE_PRLI_ISSUE: 6326 case NLP_STE_LOGO_ISSUE: 6327 continue; 6328 } 6329 6330 if (ndlp->nlp_fc4_type & NLP_FC4_NVME) 6331 lpfc_nvme_rescan_port(vport, ndlp); 6332 6333 lpfc_disc_state_machine(vport, ndlp, NULL, 6334 NLP_EVT_DEVICE_RECOVERY); 6335 lpfc_cancel_retry_delay_tmo(vport, ndlp); 6336 } 6337 return 0; 6338 } 6339 6340 /** 6341 * lpfc_send_rscn_event - Send an RSCN event to management application 6342 * @vport: pointer to a host virtual N_Port data structure. 6343 * @cmdiocb: pointer to lpfc command iocb data structure. 6344 * 6345 * lpfc_send_rscn_event sends an RSCN netlink event to management 6346 * applications. 6347 */ 6348 static void 6349 lpfc_send_rscn_event(struct lpfc_vport *vport, 6350 struct lpfc_iocbq *cmdiocb) 6351 { 6352 struct lpfc_dmabuf *pcmd; 6353 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 6354 uint32_t *payload_ptr; 6355 uint32_t payload_len; 6356 struct lpfc_rscn_event_header *rscn_event_data; 6357 6358 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2; 6359 payload_ptr = (uint32_t *) pcmd->virt; 6360 payload_len = be32_to_cpu(*payload_ptr & ~ELS_CMD_MASK); 6361 6362 rscn_event_data = kmalloc(sizeof(struct lpfc_rscn_event_header) + 6363 payload_len, GFP_KERNEL); 6364 if (!rscn_event_data) { 6365 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS, 6366 "0147 Failed to allocate memory for RSCN event\n"); 6367 return; 6368 } 6369 rscn_event_data->event_type = FC_REG_RSCN_EVENT; 6370 rscn_event_data->payload_length = payload_len; 6371 memcpy(rscn_event_data->rscn_payload, payload_ptr, 6372 payload_len); 6373 6374 fc_host_post_vendor_event(shost, 6375 fc_get_event_number(), 6376 sizeof(struct lpfc_rscn_event_header) + payload_len, 6377 (char *)rscn_event_data, 6378 LPFC_NL_VENDOR_ID); 6379 6380 kfree(rscn_event_data); 6381 } 6382 6383 /** 6384 * lpfc_els_rcv_rscn - Process an unsolicited rscn iocb 6385 * @vport: pointer to a host virtual N_Port data structure. 6386 * @cmdiocb: pointer to lpfc command iocb data structure. 6387 * @ndlp: pointer to a node-list data structure. 6388 * 6389 * This routine processes an unsolicited RSCN (Registration State Change 6390 * Notification) IOCB. First, the payload of the unsolicited RSCN is walked 6391 * to invoke fc_host_post_event() routine to the FC transport layer. If the 6392 * discover state machine is about to begin discovery, it just accepts the 6393 * RSCN and the discovery process will satisfy the RSCN. If this RSCN only 6394 * contains N_Port IDs for other vports on this HBA, it just accepts the 6395 * RSCN and ignore processing it. If the state machine is in the recovery 6396 * state, the fc_rscn_id_list of this @vport is walked and the 6397 * lpfc_rscn_recovery_check() routine is invoked to send recovery event for 6398 * all nodes that match RSCN payload. Otherwise, the lpfc_els_handle_rscn() 6399 * routine is invoked to handle the RSCN event. 6400 * 6401 * Return code 6402 * 0 - Just sent the acc response 6403 * 1 - Sent the acc response and waited for name server completion 6404 **/ 6405 static int 6406 lpfc_els_rcv_rscn(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb, 6407 struct lpfc_nodelist *ndlp) 6408 { 6409 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 6410 struct lpfc_hba *phba = vport->phba; 6411 struct lpfc_dmabuf *pcmd; 6412 uint32_t *lp, *datap; 6413 uint32_t payload_len, length, nportid, *cmd; 6414 int rscn_cnt; 6415 int rscn_id = 0, hba_id = 0; 6416 int i; 6417 6418 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2; 6419 lp = (uint32_t *) pcmd->virt; 6420 6421 payload_len = be32_to_cpu(*lp++ & ~ELS_CMD_MASK); 6422 payload_len -= sizeof(uint32_t); /* take off word 0 */ 6423 /* RSCN received */ 6424 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, 6425 "0214 RSCN received Data: x%x x%x x%x x%x\n", 6426 vport->fc_flag, payload_len, *lp, 6427 vport->fc_rscn_id_cnt); 6428 6429 /* Send an RSCN event to the management application */ 6430 lpfc_send_rscn_event(vport, cmdiocb); 6431 6432 for (i = 0; i < payload_len/sizeof(uint32_t); i++) 6433 fc_host_post_event(shost, fc_get_event_number(), 6434 FCH_EVT_RSCN, lp[i]); 6435 6436 /* Check if RSCN is coming from a direct-connected remote NPort */ 6437 if (vport->fc_flag & FC_PT2PT) { 6438 /* If so, just ACC it, no other action needed for now */ 6439 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, 6440 "2024 pt2pt RSCN %08x Data: x%x x%x\n", 6441 *lp, vport->fc_flag, payload_len); 6442 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL); 6443 6444 if (ndlp->nlp_fc4_type & NLP_FC4_NVME) 6445 lpfc_nvme_rescan_port(vport, ndlp); 6446 return 0; 6447 } 6448 6449 /* If we are about to begin discovery, just ACC the RSCN. 6450 * Discovery processing will satisfy it. 6451 */ 6452 if (vport->port_state <= LPFC_NS_QRY) { 6453 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL, 6454 "RCV RSCN ignore: did:x%x/ste:x%x flg:x%x", 6455 ndlp->nlp_DID, vport->port_state, ndlp->nlp_flag); 6456 6457 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL); 6458 return 0; 6459 } 6460 6461 /* If this RSCN just contains NPortIDs for other vports on this HBA, 6462 * just ACC and ignore it. 6463 */ 6464 if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) && 6465 !(vport->cfg_peer_port_login)) { 6466 i = payload_len; 6467 datap = lp; 6468 while (i > 0) { 6469 nportid = *datap++; 6470 nportid = ((be32_to_cpu(nportid)) & Mask_DID); 6471 i -= sizeof(uint32_t); 6472 rscn_id++; 6473 if (lpfc_find_vport_by_did(phba, nportid)) 6474 hba_id++; 6475 } 6476 if (rscn_id == hba_id) { 6477 /* ALL NPortIDs in RSCN are on HBA */ 6478 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, 6479 "0219 Ignore RSCN " 6480 "Data: x%x x%x x%x x%x\n", 6481 vport->fc_flag, payload_len, 6482 *lp, vport->fc_rscn_id_cnt); 6483 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL, 6484 "RCV RSCN vport: did:x%x/ste:x%x flg:x%x", 6485 ndlp->nlp_DID, vport->port_state, 6486 ndlp->nlp_flag); 6487 6488 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, 6489 ndlp, NULL); 6490 return 0; 6491 } 6492 } 6493 6494 spin_lock_irq(shost->host_lock); 6495 if (vport->fc_rscn_flush) { 6496 /* Another thread is walking fc_rscn_id_list on this vport */ 6497 vport->fc_flag |= FC_RSCN_DISCOVERY; 6498 spin_unlock_irq(shost->host_lock); 6499 /* Send back ACC */ 6500 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL); 6501 return 0; 6502 } 6503 /* Indicate we are walking fc_rscn_id_list on this vport */ 6504 vport->fc_rscn_flush = 1; 6505 spin_unlock_irq(shost->host_lock); 6506 /* Get the array count after successfully have the token */ 6507 rscn_cnt = vport->fc_rscn_id_cnt; 6508 /* If we are already processing an RSCN, save the received 6509 * RSCN payload buffer, cmdiocb->context2 to process later. 6510 */ 6511 if (vport->fc_flag & (FC_RSCN_MODE | FC_NDISC_ACTIVE)) { 6512 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL, 6513 "RCV RSCN defer: did:x%x/ste:x%x flg:x%x", 6514 ndlp->nlp_DID, vport->port_state, ndlp->nlp_flag); 6515 6516 spin_lock_irq(shost->host_lock); 6517 vport->fc_flag |= FC_RSCN_DEFERRED; 6518 if ((rscn_cnt < FC_MAX_HOLD_RSCN) && 6519 !(vport->fc_flag & FC_RSCN_DISCOVERY)) { 6520 vport->fc_flag |= FC_RSCN_MODE; 6521 spin_unlock_irq(shost->host_lock); 6522 if (rscn_cnt) { 6523 cmd = vport->fc_rscn_id_list[rscn_cnt-1]->virt; 6524 length = be32_to_cpu(*cmd & ~ELS_CMD_MASK); 6525 } 6526 if ((rscn_cnt) && 6527 (payload_len + length <= LPFC_BPL_SIZE)) { 6528 *cmd &= ELS_CMD_MASK; 6529 *cmd |= cpu_to_be32(payload_len + length); 6530 memcpy(((uint8_t *)cmd) + length, lp, 6531 payload_len); 6532 } else { 6533 vport->fc_rscn_id_list[rscn_cnt] = pcmd; 6534 vport->fc_rscn_id_cnt++; 6535 /* If we zero, cmdiocb->context2, the calling 6536 * routine will not try to free it. 6537 */ 6538 cmdiocb->context2 = NULL; 6539 } 6540 /* Deferred RSCN */ 6541 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, 6542 "0235 Deferred RSCN " 6543 "Data: x%x x%x x%x\n", 6544 vport->fc_rscn_id_cnt, vport->fc_flag, 6545 vport->port_state); 6546 } else { 6547 vport->fc_flag |= FC_RSCN_DISCOVERY; 6548 spin_unlock_irq(shost->host_lock); 6549 /* ReDiscovery RSCN */ 6550 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, 6551 "0234 ReDiscovery RSCN " 6552 "Data: x%x x%x x%x\n", 6553 vport->fc_rscn_id_cnt, vport->fc_flag, 6554 vport->port_state); 6555 } 6556 /* Indicate we are done walking fc_rscn_id_list on this vport */ 6557 vport->fc_rscn_flush = 0; 6558 /* Send back ACC */ 6559 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL); 6560 /* send RECOVERY event for ALL nodes that match RSCN payload */ 6561 lpfc_rscn_recovery_check(vport); 6562 return 0; 6563 } 6564 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL, 6565 "RCV RSCN: did:x%x/ste:x%x flg:x%x", 6566 ndlp->nlp_DID, vport->port_state, ndlp->nlp_flag); 6567 6568 spin_lock_irq(shost->host_lock); 6569 vport->fc_flag |= FC_RSCN_MODE; 6570 spin_unlock_irq(shost->host_lock); 6571 vport->fc_rscn_id_list[vport->fc_rscn_id_cnt++] = pcmd; 6572 /* Indicate we are done walking fc_rscn_id_list on this vport */ 6573 vport->fc_rscn_flush = 0; 6574 /* 6575 * If we zero, cmdiocb->context2, the calling routine will 6576 * not try to free it. 6577 */ 6578 cmdiocb->context2 = NULL; 6579 lpfc_set_disctmo(vport); 6580 /* Send back ACC */ 6581 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL); 6582 /* send RECOVERY event for ALL nodes that match RSCN payload */ 6583 lpfc_rscn_recovery_check(vport); 6584 return lpfc_els_handle_rscn(vport); 6585 } 6586 6587 /** 6588 * lpfc_els_handle_rscn - Handle rscn for a vport 6589 * @vport: pointer to a host virtual N_Port data structure. 6590 * 6591 * This routine handles the Registration State Configuration Notification 6592 * (RSCN) for a @vport. If login to NameServer does not exist, a new ndlp shall 6593 * be created and a Port Login (PLOGI) to the NameServer is issued. Otherwise, 6594 * if the ndlp to NameServer exists, a Common Transport (CT) command to the 6595 * NameServer shall be issued. If CT command to the NameServer fails to be 6596 * issued, the lpfc_els_flush_rscn() routine shall be invoked to clean up any 6597 * RSCN activities with the @vport. 6598 * 6599 * Return code 6600 * 0 - Cleaned up rscn on the @vport 6601 * 1 - Wait for plogi to name server before proceed 6602 **/ 6603 int 6604 lpfc_els_handle_rscn(struct lpfc_vport *vport) 6605 { 6606 struct lpfc_nodelist *ndlp; 6607 struct lpfc_hba *phba = vport->phba; 6608 6609 /* Ignore RSCN if the port is being torn down. */ 6610 if (vport->load_flag & FC_UNLOADING) { 6611 lpfc_els_flush_rscn(vport); 6612 return 0; 6613 } 6614 6615 /* Start timer for RSCN processing */ 6616 lpfc_set_disctmo(vport); 6617 6618 /* RSCN processed */ 6619 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, 6620 "0215 RSCN processed Data: x%x x%x x%x x%x\n", 6621 vport->fc_flag, 0, vport->fc_rscn_id_cnt, 6622 vport->port_state); 6623 6624 /* To process RSCN, first compare RSCN data with NameServer */ 6625 vport->fc_ns_retry = 0; 6626 vport->num_disc_nodes = 0; 6627 6628 ndlp = lpfc_findnode_did(vport, NameServer_DID); 6629 if (ndlp && NLP_CHK_NODE_ACT(ndlp) 6630 && ndlp->nlp_state == NLP_STE_UNMAPPED_NODE) { 6631 /* Good ndlp, issue CT Request to NameServer. Need to 6632 * know how many gidfts were issued. If none, then just 6633 * flush the RSCN. Otherwise, the outstanding requests 6634 * need to complete. 6635 */ 6636 if (phba->cfg_ns_query == LPFC_NS_QUERY_GID_FT) { 6637 if (lpfc_issue_gidft(vport) > 0) 6638 return 1; 6639 } else if (phba->cfg_ns_query == LPFC_NS_QUERY_GID_PT) { 6640 if (lpfc_issue_gidpt(vport) > 0) 6641 return 1; 6642 } else { 6643 return 1; 6644 } 6645 } else { 6646 /* Nameserver login in question. Revalidate. */ 6647 if (ndlp) { 6648 ndlp = lpfc_enable_node(vport, ndlp, 6649 NLP_STE_PLOGI_ISSUE); 6650 if (!ndlp) { 6651 lpfc_els_flush_rscn(vport); 6652 return 0; 6653 } 6654 ndlp->nlp_prev_state = NLP_STE_UNUSED_NODE; 6655 } else { 6656 ndlp = lpfc_nlp_init(vport, NameServer_DID); 6657 if (!ndlp) { 6658 lpfc_els_flush_rscn(vport); 6659 return 0; 6660 } 6661 ndlp->nlp_prev_state = ndlp->nlp_state; 6662 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE); 6663 } 6664 ndlp->nlp_type |= NLP_FABRIC; 6665 lpfc_issue_els_plogi(vport, NameServer_DID, 0); 6666 /* Wait for NameServer login cmpl before we can 6667 * continue 6668 */ 6669 return 1; 6670 } 6671 6672 lpfc_els_flush_rscn(vport); 6673 return 0; 6674 } 6675 6676 /** 6677 * lpfc_els_rcv_flogi - Process an unsolicited flogi iocb 6678 * @vport: pointer to a host virtual N_Port data structure. 6679 * @cmdiocb: pointer to lpfc command iocb data structure. 6680 * @ndlp: pointer to a node-list data structure. 6681 * 6682 * This routine processes Fabric Login (FLOGI) IOCB received as an ELS 6683 * unsolicited event. An unsolicited FLOGI can be received in a point-to- 6684 * point topology. As an unsolicited FLOGI should not be received in a loop 6685 * mode, any unsolicited FLOGI received in loop mode shall be ignored. The 6686 * lpfc_check_sparm() routine is invoked to check the parameters in the 6687 * unsolicited FLOGI. If parameters validation failed, the routine 6688 * lpfc_els_rsp_reject() shall be called with reject reason code set to 6689 * LSEXP_SPARM_OPTIONS to reject the FLOGI. Otherwise, the Port WWN in the 6690 * FLOGI shall be compared with the Port WWN of the @vport to determine who 6691 * will initiate PLOGI. The higher lexicographical value party shall has 6692 * higher priority (as the winning port) and will initiate PLOGI and 6693 * communicate Port_IDs (Addresses) for both nodes in PLOGI. The result 6694 * of this will be marked in the @vport fc_flag field with FC_PT2PT_PLOGI 6695 * and then the lpfc_els_rsp_acc() routine is invoked to accept the FLOGI. 6696 * 6697 * Return code 6698 * 0 - Successfully processed the unsolicited flogi 6699 * 1 - Failed to process the unsolicited flogi 6700 **/ 6701 static int 6702 lpfc_els_rcv_flogi(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb, 6703 struct lpfc_nodelist *ndlp) 6704 { 6705 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 6706 struct lpfc_hba *phba = vport->phba; 6707 struct lpfc_dmabuf *pcmd = (struct lpfc_dmabuf *) cmdiocb->context2; 6708 uint32_t *lp = (uint32_t *) pcmd->virt; 6709 IOCB_t *icmd = &cmdiocb->iocb; 6710 struct serv_parm *sp; 6711 LPFC_MBOXQ_t *mbox; 6712 uint32_t cmd, did; 6713 int rc; 6714 uint32_t fc_flag = 0; 6715 uint32_t port_state = 0; 6716 6717 cmd = *lp++; 6718 sp = (struct serv_parm *) lp; 6719 6720 /* FLOGI received */ 6721 6722 lpfc_set_disctmo(vport); 6723 6724 if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) { 6725 /* We should never receive a FLOGI in loop mode, ignore it */ 6726 did = icmd->un.elsreq64.remoteID; 6727 6728 /* An FLOGI ELS command <elsCmd> was received from DID <did> in 6729 Loop Mode */ 6730 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS, 6731 "0113 An FLOGI ELS command x%x was " 6732 "received from DID x%x in Loop Mode\n", 6733 cmd, did); 6734 return 1; 6735 } 6736 6737 (void) lpfc_check_sparm(vport, ndlp, sp, CLASS3, 1); 6738 6739 /* 6740 * If our portname is greater than the remote portname, 6741 * then we initiate Nport login. 6742 */ 6743 6744 rc = memcmp(&vport->fc_portname, &sp->portName, 6745 sizeof(struct lpfc_name)); 6746 6747 if (!rc) { 6748 if (phba->sli_rev < LPFC_SLI_REV4) { 6749 mbox = mempool_alloc(phba->mbox_mem_pool, 6750 GFP_KERNEL); 6751 if (!mbox) 6752 return 1; 6753 lpfc_linkdown(phba); 6754 lpfc_init_link(phba, mbox, 6755 phba->cfg_topology, 6756 phba->cfg_link_speed); 6757 mbox->u.mb.un.varInitLnk.lipsr_AL_PA = 0; 6758 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl; 6759 mbox->vport = vport; 6760 rc = lpfc_sli_issue_mbox(phba, mbox, 6761 MBX_NOWAIT); 6762 lpfc_set_loopback_flag(phba); 6763 if (rc == MBX_NOT_FINISHED) 6764 mempool_free(mbox, phba->mbox_mem_pool); 6765 return 1; 6766 } 6767 6768 /* abort the flogi coming back to ourselves 6769 * due to external loopback on the port. 6770 */ 6771 lpfc_els_abort_flogi(phba); 6772 return 0; 6773 6774 } else if (rc > 0) { /* greater than */ 6775 spin_lock_irq(shost->host_lock); 6776 vport->fc_flag |= FC_PT2PT_PLOGI; 6777 spin_unlock_irq(shost->host_lock); 6778 6779 /* If we have the high WWPN we can assign our own 6780 * myDID; otherwise, we have to WAIT for a PLOGI 6781 * from the remote NPort to find out what it 6782 * will be. 6783 */ 6784 vport->fc_myDID = PT2PT_LocalID; 6785 } else { 6786 vport->fc_myDID = PT2PT_RemoteID; 6787 } 6788 6789 /* 6790 * The vport state should go to LPFC_FLOGI only 6791 * AFTER we issue a FLOGI, not receive one. 6792 */ 6793 spin_lock_irq(shost->host_lock); 6794 fc_flag = vport->fc_flag; 6795 port_state = vport->port_state; 6796 vport->fc_flag |= FC_PT2PT; 6797 vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP); 6798 6799 /* Acking an unsol FLOGI. Count 1 for link bounce 6800 * work-around. 6801 */ 6802 vport->rcv_flogi_cnt++; 6803 spin_unlock_irq(shost->host_lock); 6804 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, 6805 "3311 Rcv Flogi PS x%x new PS x%x " 6806 "fc_flag x%x new fc_flag x%x\n", 6807 port_state, vport->port_state, 6808 fc_flag, vport->fc_flag); 6809 6810 /* 6811 * We temporarily set fc_myDID to make it look like we are 6812 * a Fabric. This is done just so we end up with the right 6813 * did / sid on the FLOGI ACC rsp. 6814 */ 6815 did = vport->fc_myDID; 6816 vport->fc_myDID = Fabric_DID; 6817 6818 memcpy(&phba->fc_fabparam, sp, sizeof(struct serv_parm)); 6819 6820 /* Defer ACC response until AFTER we issue a FLOGI */ 6821 if (!(phba->hba_flag & HBA_FLOGI_ISSUED)) { 6822 phba->defer_flogi_acc_rx_id = cmdiocb->iocb.ulpContext; 6823 phba->defer_flogi_acc_ox_id = 6824 cmdiocb->iocb.unsli3.rcvsli3.ox_id; 6825 6826 vport->fc_myDID = did; 6827 6828 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, 6829 "3344 Deferring FLOGI ACC: rx_id: x%x," 6830 " ox_id: x%x, hba_flag x%x\n", 6831 phba->defer_flogi_acc_rx_id, 6832 phba->defer_flogi_acc_ox_id, phba->hba_flag); 6833 6834 phba->defer_flogi_acc_flag = true; 6835 6836 return 0; 6837 } 6838 6839 /* Send back ACC */ 6840 lpfc_els_rsp_acc(vport, ELS_CMD_FLOGI, cmdiocb, ndlp, NULL); 6841 6842 /* Now lets put fc_myDID back to what its supposed to be */ 6843 vport->fc_myDID = did; 6844 6845 return 0; 6846 } 6847 6848 /** 6849 * lpfc_els_rcv_rnid - Process an unsolicited rnid iocb 6850 * @vport: pointer to a host virtual N_Port data structure. 6851 * @cmdiocb: pointer to lpfc command iocb data structure. 6852 * @ndlp: pointer to a node-list data structure. 6853 * 6854 * This routine processes Request Node Identification Data (RNID) IOCB 6855 * received as an ELS unsolicited event. Only when the RNID specified format 6856 * 0x0 or 0xDF (Topology Discovery Specific Node Identification Data) 6857 * present, this routine will invoke the lpfc_els_rsp_rnid_acc() routine to 6858 * Accept (ACC) the RNID ELS command. All the other RNID formats are 6859 * rejected by invoking the lpfc_els_rsp_reject() routine. 6860 * 6861 * Return code 6862 * 0 - Successfully processed rnid iocb (currently always return 0) 6863 **/ 6864 static int 6865 lpfc_els_rcv_rnid(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb, 6866 struct lpfc_nodelist *ndlp) 6867 { 6868 struct lpfc_dmabuf *pcmd; 6869 uint32_t *lp; 6870 RNID *rn; 6871 struct ls_rjt stat; 6872 6873 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2; 6874 lp = (uint32_t *) pcmd->virt; 6875 6876 lp++; 6877 rn = (RNID *) lp; 6878 6879 /* RNID received */ 6880 6881 switch (rn->Format) { 6882 case 0: 6883 case RNID_TOPOLOGY_DISC: 6884 /* Send back ACC */ 6885 lpfc_els_rsp_rnid_acc(vport, rn->Format, cmdiocb, ndlp); 6886 break; 6887 default: 6888 /* Reject this request because format not supported */ 6889 stat.un.b.lsRjtRsvd0 = 0; 6890 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC; 6891 stat.un.b.lsRjtRsnCodeExp = LSEXP_CANT_GIVE_DATA; 6892 stat.un.b.vendorUnique = 0; 6893 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, 6894 NULL); 6895 } 6896 return 0; 6897 } 6898 6899 /** 6900 * lpfc_els_rcv_echo - Process an unsolicited echo iocb 6901 * @vport: pointer to a host virtual N_Port data structure. 6902 * @cmdiocb: pointer to lpfc command iocb data structure. 6903 * @ndlp: pointer to a node-list data structure. 6904 * 6905 * Return code 6906 * 0 - Successfully processed echo iocb (currently always return 0) 6907 **/ 6908 static int 6909 lpfc_els_rcv_echo(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb, 6910 struct lpfc_nodelist *ndlp) 6911 { 6912 uint8_t *pcmd; 6913 6914 pcmd = (uint8_t *) (((struct lpfc_dmabuf *) cmdiocb->context2)->virt); 6915 6916 /* skip over first word of echo command to find echo data */ 6917 pcmd += sizeof(uint32_t); 6918 6919 lpfc_els_rsp_echo_acc(vport, pcmd, cmdiocb, ndlp); 6920 return 0; 6921 } 6922 6923 /** 6924 * lpfc_els_rcv_lirr - Process an unsolicited lirr iocb 6925 * @vport: pointer to a host virtual N_Port data structure. 6926 * @cmdiocb: pointer to lpfc command iocb data structure. 6927 * @ndlp: pointer to a node-list data structure. 6928 * 6929 * This routine processes a Link Incident Report Registration(LIRR) IOCB 6930 * received as an ELS unsolicited event. Currently, this function just invokes 6931 * the lpfc_els_rsp_reject() routine to reject the LIRR IOCB unconditionally. 6932 * 6933 * Return code 6934 * 0 - Successfully processed lirr iocb (currently always return 0) 6935 **/ 6936 static int 6937 lpfc_els_rcv_lirr(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb, 6938 struct lpfc_nodelist *ndlp) 6939 { 6940 struct ls_rjt stat; 6941 6942 /* For now, unconditionally reject this command */ 6943 stat.un.b.lsRjtRsvd0 = 0; 6944 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC; 6945 stat.un.b.lsRjtRsnCodeExp = LSEXP_CANT_GIVE_DATA; 6946 stat.un.b.vendorUnique = 0; 6947 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL); 6948 return 0; 6949 } 6950 6951 /** 6952 * lpfc_els_rcv_rrq - Process an unsolicited rrq iocb 6953 * @vport: pointer to a host virtual N_Port data structure. 6954 * @cmdiocb: pointer to lpfc command iocb data structure. 6955 * @ndlp: pointer to a node-list data structure. 6956 * 6957 * This routine processes a Reinstate Recovery Qualifier (RRQ) IOCB 6958 * received as an ELS unsolicited event. A request to RRQ shall only 6959 * be accepted if the Originator Nx_Port N_Port_ID or the Responder 6960 * Nx_Port N_Port_ID of the target Exchange is the same as the 6961 * N_Port_ID of the Nx_Port that makes the request. If the RRQ is 6962 * not accepted, an LS_RJT with reason code "Unable to perform 6963 * command request" and reason code explanation "Invalid Originator 6964 * S_ID" shall be returned. For now, we just unconditionally accept 6965 * RRQ from the target. 6966 **/ 6967 static void 6968 lpfc_els_rcv_rrq(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb, 6969 struct lpfc_nodelist *ndlp) 6970 { 6971 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL); 6972 if (vport->phba->sli_rev == LPFC_SLI_REV4) 6973 lpfc_els_clear_rrq(vport, cmdiocb, ndlp); 6974 } 6975 6976 /** 6977 * lpfc_els_rsp_rls_acc - Completion callbk func for MBX_READ_LNK_STAT mbox cmd 6978 * @phba: pointer to lpfc hba data structure. 6979 * @pmb: pointer to the driver internal queue element for mailbox command. 6980 * 6981 * This routine is the completion callback function for the MBX_READ_LNK_STAT 6982 * mailbox command. This callback function is to actually send the Accept 6983 * (ACC) response to a Read Port Status (RPS) unsolicited IOCB event. It 6984 * collects the link statistics from the completion of the MBX_READ_LNK_STAT 6985 * mailbox command, constructs the RPS response with the link statistics 6986 * collected, and then invokes the lpfc_sli_issue_iocb() routine to send ACC 6987 * response to the RPS. 6988 * 6989 * Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp 6990 * will be incremented by 1 for holding the ndlp and the reference to ndlp 6991 * will be stored into the context1 field of the IOCB for the completion 6992 * callback function to the RPS Accept Response ELS IOCB command. 6993 * 6994 **/ 6995 static void 6996 lpfc_els_rsp_rls_acc(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 6997 { 6998 MAILBOX_t *mb; 6999 IOCB_t *icmd; 7000 struct RLS_RSP *rls_rsp; 7001 uint8_t *pcmd; 7002 struct lpfc_iocbq *elsiocb; 7003 struct lpfc_nodelist *ndlp; 7004 uint16_t oxid; 7005 uint16_t rxid; 7006 uint32_t cmdsize; 7007 7008 mb = &pmb->u.mb; 7009 7010 ndlp = (struct lpfc_nodelist *)pmb->ctx_ndlp; 7011 rxid = (uint16_t)((unsigned long)(pmb->ctx_buf) & 0xffff); 7012 oxid = (uint16_t)(((unsigned long)(pmb->ctx_buf) >> 16) & 0xffff); 7013 pmb->ctx_buf = NULL; 7014 pmb->ctx_ndlp = NULL; 7015 7016 if (mb->mbxStatus) { 7017 mempool_free(pmb, phba->mbox_mem_pool); 7018 return; 7019 } 7020 7021 cmdsize = sizeof(struct RLS_RSP) + sizeof(uint32_t); 7022 elsiocb = lpfc_prep_els_iocb(phba->pport, 0, cmdsize, 7023 lpfc_max_els_tries, ndlp, 7024 ndlp->nlp_DID, ELS_CMD_ACC); 7025 7026 /* Decrement the ndlp reference count from previous mbox command */ 7027 lpfc_nlp_put(ndlp); 7028 7029 if (!elsiocb) { 7030 mempool_free(pmb, phba->mbox_mem_pool); 7031 return; 7032 } 7033 7034 icmd = &elsiocb->iocb; 7035 icmd->ulpContext = rxid; 7036 icmd->unsli3.rcvsli3.ox_id = oxid; 7037 7038 pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt); 7039 *((uint32_t *) (pcmd)) = ELS_CMD_ACC; 7040 pcmd += sizeof(uint32_t); /* Skip past command */ 7041 rls_rsp = (struct RLS_RSP *)pcmd; 7042 7043 rls_rsp->linkFailureCnt = cpu_to_be32(mb->un.varRdLnk.linkFailureCnt); 7044 rls_rsp->lossSyncCnt = cpu_to_be32(mb->un.varRdLnk.lossSyncCnt); 7045 rls_rsp->lossSignalCnt = cpu_to_be32(mb->un.varRdLnk.lossSignalCnt); 7046 rls_rsp->primSeqErrCnt = cpu_to_be32(mb->un.varRdLnk.primSeqErrCnt); 7047 rls_rsp->invalidXmitWord = cpu_to_be32(mb->un.varRdLnk.invalidXmitWord); 7048 rls_rsp->crcCnt = cpu_to_be32(mb->un.varRdLnk.crcCnt); 7049 mempool_free(pmb, phba->mbox_mem_pool); 7050 /* Xmit ELS RLS ACC response tag <ulpIoTag> */ 7051 lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_ELS, 7052 "2874 Xmit ELS RLS ACC response tag x%x xri x%x, " 7053 "did x%x, nlp_flag x%x, nlp_state x%x, rpi x%x\n", 7054 elsiocb->iotag, elsiocb->iocb.ulpContext, 7055 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state, 7056 ndlp->nlp_rpi); 7057 elsiocb->iocb_cmpl = lpfc_cmpl_els_rsp; 7058 phba->fc_stat.elsXmitACC++; 7059 if (lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0) == IOCB_ERROR) 7060 lpfc_els_free_iocb(phba, elsiocb); 7061 } 7062 7063 /** 7064 * lpfc_els_rsp_rps_acc - Completion callbk func for MBX_READ_LNK_STAT mbox cmd 7065 * @phba: pointer to lpfc hba data structure. 7066 * @pmb: pointer to the driver internal queue element for mailbox command. 7067 * 7068 * This routine is the completion callback function for the MBX_READ_LNK_STAT 7069 * mailbox command. This callback function is to actually send the Accept 7070 * (ACC) response to a Read Port Status (RPS) unsolicited IOCB event. It 7071 * collects the link statistics from the completion of the MBX_READ_LNK_STAT 7072 * mailbox command, constructs the RPS response with the link statistics 7073 * collected, and then invokes the lpfc_sli_issue_iocb() routine to send ACC 7074 * response to the RPS. 7075 * 7076 * Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp 7077 * will be incremented by 1 for holding the ndlp and the reference to ndlp 7078 * will be stored into the context1 field of the IOCB for the completion 7079 * callback function to the RPS Accept Response ELS IOCB command. 7080 * 7081 **/ 7082 static void 7083 lpfc_els_rsp_rps_acc(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 7084 { 7085 MAILBOX_t *mb; 7086 IOCB_t *icmd; 7087 RPS_RSP *rps_rsp; 7088 uint8_t *pcmd; 7089 struct lpfc_iocbq *elsiocb; 7090 struct lpfc_nodelist *ndlp; 7091 uint16_t status; 7092 uint16_t oxid; 7093 uint16_t rxid; 7094 uint32_t cmdsize; 7095 7096 mb = &pmb->u.mb; 7097 7098 ndlp = (struct lpfc_nodelist *)pmb->ctx_ndlp; 7099 rxid = (uint16_t)((unsigned long)(pmb->ctx_buf) & 0xffff); 7100 oxid = (uint16_t)(((unsigned long)(pmb->ctx_buf) >> 16) & 0xffff); 7101 pmb->ctx_ndlp = NULL; 7102 pmb->ctx_buf = NULL; 7103 7104 if (mb->mbxStatus) { 7105 mempool_free(pmb, phba->mbox_mem_pool); 7106 return; 7107 } 7108 7109 cmdsize = sizeof(RPS_RSP) + sizeof(uint32_t); 7110 mempool_free(pmb, phba->mbox_mem_pool); 7111 elsiocb = lpfc_prep_els_iocb(phba->pport, 0, cmdsize, 7112 lpfc_max_els_tries, ndlp, 7113 ndlp->nlp_DID, ELS_CMD_ACC); 7114 7115 /* Decrement the ndlp reference count from previous mbox command */ 7116 lpfc_nlp_put(ndlp); 7117 7118 if (!elsiocb) 7119 return; 7120 7121 icmd = &elsiocb->iocb; 7122 icmd->ulpContext = rxid; 7123 icmd->unsli3.rcvsli3.ox_id = oxid; 7124 7125 pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt); 7126 *((uint32_t *) (pcmd)) = ELS_CMD_ACC; 7127 pcmd += sizeof(uint32_t); /* Skip past command */ 7128 rps_rsp = (RPS_RSP *)pcmd; 7129 7130 if (phba->fc_topology != LPFC_TOPOLOGY_LOOP) 7131 status = 0x10; 7132 else 7133 status = 0x8; 7134 if (phba->pport->fc_flag & FC_FABRIC) 7135 status |= 0x4; 7136 7137 rps_rsp->rsvd1 = 0; 7138 rps_rsp->portStatus = cpu_to_be16(status); 7139 rps_rsp->linkFailureCnt = cpu_to_be32(mb->un.varRdLnk.linkFailureCnt); 7140 rps_rsp->lossSyncCnt = cpu_to_be32(mb->un.varRdLnk.lossSyncCnt); 7141 rps_rsp->lossSignalCnt = cpu_to_be32(mb->un.varRdLnk.lossSignalCnt); 7142 rps_rsp->primSeqErrCnt = cpu_to_be32(mb->un.varRdLnk.primSeqErrCnt); 7143 rps_rsp->invalidXmitWord = cpu_to_be32(mb->un.varRdLnk.invalidXmitWord); 7144 rps_rsp->crcCnt = cpu_to_be32(mb->un.varRdLnk.crcCnt); 7145 /* Xmit ELS RPS ACC response tag <ulpIoTag> */ 7146 lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_ELS, 7147 "0118 Xmit ELS RPS ACC response tag x%x xri x%x, " 7148 "did x%x, nlp_flag x%x, nlp_state x%x, rpi x%x\n", 7149 elsiocb->iotag, elsiocb->iocb.ulpContext, 7150 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state, 7151 ndlp->nlp_rpi); 7152 elsiocb->iocb_cmpl = lpfc_cmpl_els_rsp; 7153 phba->fc_stat.elsXmitACC++; 7154 if (lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0) == IOCB_ERROR) 7155 lpfc_els_free_iocb(phba, elsiocb); 7156 return; 7157 } 7158 7159 /** 7160 * lpfc_els_rcv_rls - Process an unsolicited rls iocb 7161 * @vport: pointer to a host virtual N_Port data structure. 7162 * @cmdiocb: pointer to lpfc command iocb data structure. 7163 * @ndlp: pointer to a node-list data structure. 7164 * 7165 * This routine processes Read Port Status (RPL) IOCB received as an 7166 * ELS unsolicited event. It first checks the remote port state. If the 7167 * remote port is not in NLP_STE_UNMAPPED_NODE state or NLP_STE_MAPPED_NODE 7168 * state, it invokes the lpfc_els_rsl_reject() routine to send the reject 7169 * response. Otherwise, it issue the MBX_READ_LNK_STAT mailbox command 7170 * for reading the HBA link statistics. It is for the callback function, 7171 * lpfc_els_rsp_rls_acc(), set to the MBX_READ_LNK_STAT mailbox command 7172 * to actually sending out RPL Accept (ACC) response. 7173 * 7174 * Return codes 7175 * 0 - Successfully processed rls iocb (currently always return 0) 7176 **/ 7177 static int 7178 lpfc_els_rcv_rls(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb, 7179 struct lpfc_nodelist *ndlp) 7180 { 7181 struct lpfc_hba *phba = vport->phba; 7182 LPFC_MBOXQ_t *mbox; 7183 struct ls_rjt stat; 7184 7185 if ((ndlp->nlp_state != NLP_STE_UNMAPPED_NODE) && 7186 (ndlp->nlp_state != NLP_STE_MAPPED_NODE)) 7187 /* reject the unsolicited RPS request and done with it */ 7188 goto reject_out; 7189 7190 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_ATOMIC); 7191 if (mbox) { 7192 lpfc_read_lnk_stat(phba, mbox); 7193 mbox->ctx_buf = (void *)((unsigned long) 7194 ((cmdiocb->iocb.unsli3.rcvsli3.ox_id << 16) | 7195 cmdiocb->iocb.ulpContext)); /* rx_id */ 7196 mbox->ctx_ndlp = lpfc_nlp_get(ndlp); 7197 mbox->vport = vport; 7198 mbox->mbox_cmpl = lpfc_els_rsp_rls_acc; 7199 if (lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT) 7200 != MBX_NOT_FINISHED) 7201 /* Mbox completion will send ELS Response */ 7202 return 0; 7203 /* Decrement reference count used for the failed mbox 7204 * command. 7205 */ 7206 lpfc_nlp_put(ndlp); 7207 mempool_free(mbox, phba->mbox_mem_pool); 7208 } 7209 reject_out: 7210 /* issue rejection response */ 7211 stat.un.b.lsRjtRsvd0 = 0; 7212 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC; 7213 stat.un.b.lsRjtRsnCodeExp = LSEXP_CANT_GIVE_DATA; 7214 stat.un.b.vendorUnique = 0; 7215 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL); 7216 return 0; 7217 } 7218 7219 /** 7220 * lpfc_els_rcv_rtv - Process an unsolicited rtv iocb 7221 * @vport: pointer to a host virtual N_Port data structure. 7222 * @cmdiocb: pointer to lpfc command iocb data structure. 7223 * @ndlp: pointer to a node-list data structure. 7224 * 7225 * This routine processes Read Timout Value (RTV) IOCB received as an 7226 * ELS unsolicited event. It first checks the remote port state. If the 7227 * remote port is not in NLP_STE_UNMAPPED_NODE state or NLP_STE_MAPPED_NODE 7228 * state, it invokes the lpfc_els_rsl_reject() routine to send the reject 7229 * response. Otherwise, it sends the Accept(ACC) response to a Read Timeout 7230 * Value (RTV) unsolicited IOCB event. 7231 * 7232 * Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp 7233 * will be incremented by 1 for holding the ndlp and the reference to ndlp 7234 * will be stored into the context1 field of the IOCB for the completion 7235 * callback function to the RPS Accept Response ELS IOCB command. 7236 * 7237 * Return codes 7238 * 0 - Successfully processed rtv iocb (currently always return 0) 7239 **/ 7240 static int 7241 lpfc_els_rcv_rtv(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb, 7242 struct lpfc_nodelist *ndlp) 7243 { 7244 struct lpfc_hba *phba = vport->phba; 7245 struct ls_rjt stat; 7246 struct RTV_RSP *rtv_rsp; 7247 uint8_t *pcmd; 7248 struct lpfc_iocbq *elsiocb; 7249 uint32_t cmdsize; 7250 7251 7252 if ((ndlp->nlp_state != NLP_STE_UNMAPPED_NODE) && 7253 (ndlp->nlp_state != NLP_STE_MAPPED_NODE)) 7254 /* reject the unsolicited RPS request and done with it */ 7255 goto reject_out; 7256 7257 cmdsize = sizeof(struct RTV_RSP) + sizeof(uint32_t); 7258 elsiocb = lpfc_prep_els_iocb(phba->pport, 0, cmdsize, 7259 lpfc_max_els_tries, ndlp, 7260 ndlp->nlp_DID, ELS_CMD_ACC); 7261 7262 if (!elsiocb) 7263 return 1; 7264 7265 pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt); 7266 *((uint32_t *) (pcmd)) = ELS_CMD_ACC; 7267 pcmd += sizeof(uint32_t); /* Skip past command */ 7268 7269 /* use the command's xri in the response */ 7270 elsiocb->iocb.ulpContext = cmdiocb->iocb.ulpContext; /* Xri / rx_id */ 7271 elsiocb->iocb.unsli3.rcvsli3.ox_id = cmdiocb->iocb.unsli3.rcvsli3.ox_id; 7272 7273 rtv_rsp = (struct RTV_RSP *)pcmd; 7274 7275 /* populate RTV payload */ 7276 rtv_rsp->ratov = cpu_to_be32(phba->fc_ratov * 1000); /* report msecs */ 7277 rtv_rsp->edtov = cpu_to_be32(phba->fc_edtov); 7278 bf_set(qtov_edtovres, rtv_rsp, phba->fc_edtovResol ? 1 : 0); 7279 bf_set(qtov_rttov, rtv_rsp, 0); /* Field is for FC ONLY */ 7280 rtv_rsp->qtov = cpu_to_be32(rtv_rsp->qtov); 7281 7282 /* Xmit ELS RLS ACC response tag <ulpIoTag> */ 7283 lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_ELS, 7284 "2875 Xmit ELS RTV ACC response tag x%x xri x%x, " 7285 "did x%x, nlp_flag x%x, nlp_state x%x, rpi x%x, " 7286 "Data: x%x x%x x%x\n", 7287 elsiocb->iotag, elsiocb->iocb.ulpContext, 7288 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state, 7289 ndlp->nlp_rpi, 7290 rtv_rsp->ratov, rtv_rsp->edtov, rtv_rsp->qtov); 7291 elsiocb->iocb_cmpl = lpfc_cmpl_els_rsp; 7292 phba->fc_stat.elsXmitACC++; 7293 if (lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0) == IOCB_ERROR) 7294 lpfc_els_free_iocb(phba, elsiocb); 7295 return 0; 7296 7297 reject_out: 7298 /* issue rejection response */ 7299 stat.un.b.lsRjtRsvd0 = 0; 7300 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC; 7301 stat.un.b.lsRjtRsnCodeExp = LSEXP_CANT_GIVE_DATA; 7302 stat.un.b.vendorUnique = 0; 7303 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL); 7304 return 0; 7305 } 7306 7307 /* lpfc_els_rcv_rps - Process an unsolicited rps iocb 7308 * @vport: pointer to a host virtual N_Port data structure. 7309 * @cmdiocb: pointer to lpfc command iocb data structure. 7310 * @ndlp: pointer to a node-list data structure. 7311 * 7312 * This routine processes Read Port Status (RPS) IOCB received as an 7313 * ELS unsolicited event. It first checks the remote port state. If the 7314 * remote port is not in NLP_STE_UNMAPPED_NODE state or NLP_STE_MAPPED_NODE 7315 * state, it invokes the lpfc_els_rsp_reject() routine to send the reject 7316 * response. Otherwise, it issue the MBX_READ_LNK_STAT mailbox command 7317 * for reading the HBA link statistics. It is for the callback function, 7318 * lpfc_els_rsp_rps_acc(), set to the MBX_READ_LNK_STAT mailbox command 7319 * to actually sending out RPS Accept (ACC) response. 7320 * 7321 * Return codes 7322 * 0 - Successfully processed rps iocb (currently always return 0) 7323 **/ 7324 static int 7325 lpfc_els_rcv_rps(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb, 7326 struct lpfc_nodelist *ndlp) 7327 { 7328 struct lpfc_hba *phba = vport->phba; 7329 uint32_t *lp; 7330 uint8_t flag; 7331 LPFC_MBOXQ_t *mbox; 7332 struct lpfc_dmabuf *pcmd; 7333 RPS *rps; 7334 struct ls_rjt stat; 7335 7336 if ((ndlp->nlp_state != NLP_STE_UNMAPPED_NODE) && 7337 (ndlp->nlp_state != NLP_STE_MAPPED_NODE)) 7338 /* reject the unsolicited RPS request and done with it */ 7339 goto reject_out; 7340 7341 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2; 7342 lp = (uint32_t *) pcmd->virt; 7343 flag = (be32_to_cpu(*lp++) & 0xf); 7344 rps = (RPS *) lp; 7345 7346 if ((flag == 0) || 7347 ((flag == 1) && (be32_to_cpu(rps->un.portNum) == 0)) || 7348 ((flag == 2) && (memcmp(&rps->un.portName, &vport->fc_portname, 7349 sizeof(struct lpfc_name)) == 0))) { 7350 7351 printk("Fix me....\n"); 7352 dump_stack(); 7353 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_ATOMIC); 7354 if (mbox) { 7355 lpfc_read_lnk_stat(phba, mbox); 7356 mbox->ctx_buf = (void *)((unsigned long) 7357 ((cmdiocb->iocb.unsli3.rcvsli3.ox_id << 16) | 7358 cmdiocb->iocb.ulpContext)); /* rx_id */ 7359 mbox->ctx_ndlp = lpfc_nlp_get(ndlp); 7360 mbox->vport = vport; 7361 mbox->mbox_cmpl = lpfc_els_rsp_rps_acc; 7362 if (lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT) 7363 != MBX_NOT_FINISHED) 7364 /* Mbox completion will send ELS Response */ 7365 return 0; 7366 /* Decrement reference count used for the failed mbox 7367 * command. 7368 */ 7369 lpfc_nlp_put(ndlp); 7370 mempool_free(mbox, phba->mbox_mem_pool); 7371 } 7372 } 7373 7374 reject_out: 7375 /* issue rejection response */ 7376 stat.un.b.lsRjtRsvd0 = 0; 7377 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC; 7378 stat.un.b.lsRjtRsnCodeExp = LSEXP_CANT_GIVE_DATA; 7379 stat.un.b.vendorUnique = 0; 7380 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL); 7381 return 0; 7382 } 7383 7384 /* lpfc_issue_els_rrq - Process an unsolicited rps iocb 7385 * @vport: pointer to a host virtual N_Port data structure. 7386 * @ndlp: pointer to a node-list data structure. 7387 * @did: DID of the target. 7388 * @rrq: Pointer to the rrq struct. 7389 * 7390 * Build a ELS RRQ command and send it to the target. If the issue_iocb is 7391 * Successful the the completion handler will clear the RRQ. 7392 * 7393 * Return codes 7394 * 0 - Successfully sent rrq els iocb. 7395 * 1 - Failed to send rrq els iocb. 7396 **/ 7397 static int 7398 lpfc_issue_els_rrq(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 7399 uint32_t did, struct lpfc_node_rrq *rrq) 7400 { 7401 struct lpfc_hba *phba = vport->phba; 7402 struct RRQ *els_rrq; 7403 struct lpfc_iocbq *elsiocb; 7404 uint8_t *pcmd; 7405 uint16_t cmdsize; 7406 int ret; 7407 7408 7409 if (ndlp != rrq->ndlp) 7410 ndlp = rrq->ndlp; 7411 if (!ndlp || !NLP_CHK_NODE_ACT(ndlp)) 7412 return 1; 7413 7414 /* If ndlp is not NULL, we will bump the reference count on it */ 7415 cmdsize = (sizeof(uint32_t) + sizeof(struct RRQ)); 7416 elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, 0, ndlp, did, 7417 ELS_CMD_RRQ); 7418 if (!elsiocb) 7419 return 1; 7420 7421 pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt); 7422 7423 /* For RRQ request, remainder of payload is Exchange IDs */ 7424 *((uint32_t *) (pcmd)) = ELS_CMD_RRQ; 7425 pcmd += sizeof(uint32_t); 7426 els_rrq = (struct RRQ *) pcmd; 7427 7428 bf_set(rrq_oxid, els_rrq, phba->sli4_hba.xri_ids[rrq->xritag]); 7429 bf_set(rrq_rxid, els_rrq, rrq->rxid); 7430 bf_set(rrq_did, els_rrq, vport->fc_myDID); 7431 els_rrq->rrq = cpu_to_be32(els_rrq->rrq); 7432 els_rrq->rrq_exchg = cpu_to_be32(els_rrq->rrq_exchg); 7433 7434 7435 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, 7436 "Issue RRQ: did:x%x", 7437 did, rrq->xritag, rrq->rxid); 7438 elsiocb->context_un.rrq = rrq; 7439 elsiocb->iocb_cmpl = lpfc_cmpl_els_rrq; 7440 ret = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0); 7441 7442 if (ret == IOCB_ERROR) { 7443 lpfc_els_free_iocb(phba, elsiocb); 7444 return 1; 7445 } 7446 return 0; 7447 } 7448 7449 /** 7450 * lpfc_send_rrq - Sends ELS RRQ if needed. 7451 * @phba: pointer to lpfc hba data structure. 7452 * @rrq: pointer to the active rrq. 7453 * 7454 * This routine will call the lpfc_issue_els_rrq if the rrq is 7455 * still active for the xri. If this function returns a failure then 7456 * the caller needs to clean up the RRQ by calling lpfc_clr_active_rrq. 7457 * 7458 * Returns 0 Success. 7459 * 1 Failure. 7460 **/ 7461 int 7462 lpfc_send_rrq(struct lpfc_hba *phba, struct lpfc_node_rrq *rrq) 7463 { 7464 struct lpfc_nodelist *ndlp = lpfc_findnode_did(rrq->vport, 7465 rrq->nlp_DID); 7466 if (!ndlp) 7467 return 1; 7468 7469 if (lpfc_test_rrq_active(phba, ndlp, rrq->xritag)) 7470 return lpfc_issue_els_rrq(rrq->vport, ndlp, 7471 rrq->nlp_DID, rrq); 7472 else 7473 return 1; 7474 } 7475 7476 /** 7477 * lpfc_els_rsp_rpl_acc - Issue an accept rpl els command 7478 * @vport: pointer to a host virtual N_Port data structure. 7479 * @cmdsize: size of the ELS command. 7480 * @oldiocb: pointer to the original lpfc command iocb data structure. 7481 * @ndlp: pointer to a node-list data structure. 7482 * 7483 * This routine issuees an Accept (ACC) Read Port List (RPL) ELS command. 7484 * It is to be called by the lpfc_els_rcv_rpl() routine to accept the RPL. 7485 * 7486 * Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp 7487 * will be incremented by 1 for holding the ndlp and the reference to ndlp 7488 * will be stored into the context1 field of the IOCB for the completion 7489 * callback function to the RPL Accept Response ELS command. 7490 * 7491 * Return code 7492 * 0 - Successfully issued ACC RPL ELS command 7493 * 1 - Failed to issue ACC RPL ELS command 7494 **/ 7495 static int 7496 lpfc_els_rsp_rpl_acc(struct lpfc_vport *vport, uint16_t cmdsize, 7497 struct lpfc_iocbq *oldiocb, struct lpfc_nodelist *ndlp) 7498 { 7499 struct lpfc_hba *phba = vport->phba; 7500 IOCB_t *icmd, *oldcmd; 7501 RPL_RSP rpl_rsp; 7502 struct lpfc_iocbq *elsiocb; 7503 uint8_t *pcmd; 7504 7505 elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry, ndlp, 7506 ndlp->nlp_DID, ELS_CMD_ACC); 7507 7508 if (!elsiocb) 7509 return 1; 7510 7511 icmd = &elsiocb->iocb; 7512 oldcmd = &oldiocb->iocb; 7513 icmd->ulpContext = oldcmd->ulpContext; /* Xri / rx_id */ 7514 icmd->unsli3.rcvsli3.ox_id = oldcmd->unsli3.rcvsli3.ox_id; 7515 7516 pcmd = (((struct lpfc_dmabuf *) elsiocb->context2)->virt); 7517 *((uint32_t *) (pcmd)) = ELS_CMD_ACC; 7518 pcmd += sizeof(uint16_t); 7519 *((uint16_t *)(pcmd)) = be16_to_cpu(cmdsize); 7520 pcmd += sizeof(uint16_t); 7521 7522 /* Setup the RPL ACC payload */ 7523 rpl_rsp.listLen = be32_to_cpu(1); 7524 rpl_rsp.index = 0; 7525 rpl_rsp.port_num_blk.portNum = 0; 7526 rpl_rsp.port_num_blk.portID = be32_to_cpu(vport->fc_myDID); 7527 memcpy(&rpl_rsp.port_num_blk.portName, &vport->fc_portname, 7528 sizeof(struct lpfc_name)); 7529 memcpy(pcmd, &rpl_rsp, cmdsize - sizeof(uint32_t)); 7530 /* Xmit ELS RPL ACC response tag <ulpIoTag> */ 7531 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, 7532 "0120 Xmit ELS RPL ACC response tag x%x " 7533 "xri x%x, did x%x, nlp_flag x%x, nlp_state x%x, " 7534 "rpi x%x\n", 7535 elsiocb->iotag, elsiocb->iocb.ulpContext, 7536 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state, 7537 ndlp->nlp_rpi); 7538 elsiocb->iocb_cmpl = lpfc_cmpl_els_rsp; 7539 phba->fc_stat.elsXmitACC++; 7540 if (lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0) == 7541 IOCB_ERROR) { 7542 lpfc_els_free_iocb(phba, elsiocb); 7543 return 1; 7544 } 7545 return 0; 7546 } 7547 7548 /** 7549 * lpfc_els_rcv_rpl - Process an unsolicited rpl iocb 7550 * @vport: pointer to a host virtual N_Port data structure. 7551 * @cmdiocb: pointer to lpfc command iocb data structure. 7552 * @ndlp: pointer to a node-list data structure. 7553 * 7554 * This routine processes Read Port List (RPL) IOCB received as an ELS 7555 * unsolicited event. It first checks the remote port state. If the remote 7556 * port is not in NLP_STE_UNMAPPED_NODE and NLP_STE_MAPPED_NODE states, it 7557 * invokes the lpfc_els_rsp_reject() routine to send reject response. 7558 * Otherwise, this routine then invokes the lpfc_els_rsp_rpl_acc() routine 7559 * to accept the RPL. 7560 * 7561 * Return code 7562 * 0 - Successfully processed rpl iocb (currently always return 0) 7563 **/ 7564 static int 7565 lpfc_els_rcv_rpl(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb, 7566 struct lpfc_nodelist *ndlp) 7567 { 7568 struct lpfc_dmabuf *pcmd; 7569 uint32_t *lp; 7570 uint32_t maxsize; 7571 uint16_t cmdsize; 7572 RPL *rpl; 7573 struct ls_rjt stat; 7574 7575 if ((ndlp->nlp_state != NLP_STE_UNMAPPED_NODE) && 7576 (ndlp->nlp_state != NLP_STE_MAPPED_NODE)) { 7577 /* issue rejection response */ 7578 stat.un.b.lsRjtRsvd0 = 0; 7579 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC; 7580 stat.un.b.lsRjtRsnCodeExp = LSEXP_CANT_GIVE_DATA; 7581 stat.un.b.vendorUnique = 0; 7582 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, 7583 NULL); 7584 /* rejected the unsolicited RPL request and done with it */ 7585 return 0; 7586 } 7587 7588 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2; 7589 lp = (uint32_t *) pcmd->virt; 7590 rpl = (RPL *) (lp + 1); 7591 maxsize = be32_to_cpu(rpl->maxsize); 7592 7593 /* We support only one port */ 7594 if ((rpl->index == 0) && 7595 ((maxsize == 0) || 7596 ((maxsize * sizeof(uint32_t)) >= sizeof(RPL_RSP)))) { 7597 cmdsize = sizeof(uint32_t) + sizeof(RPL_RSP); 7598 } else { 7599 cmdsize = sizeof(uint32_t) + maxsize * sizeof(uint32_t); 7600 } 7601 lpfc_els_rsp_rpl_acc(vport, cmdsize, cmdiocb, ndlp); 7602 7603 return 0; 7604 } 7605 7606 /** 7607 * lpfc_els_rcv_farp - Process an unsolicited farp request els command 7608 * @vport: pointer to a virtual N_Port data structure. 7609 * @cmdiocb: pointer to lpfc command iocb data structure. 7610 * @ndlp: pointer to a node-list data structure. 7611 * 7612 * This routine processes Fibre Channel Address Resolution Protocol 7613 * (FARP) Request IOCB received as an ELS unsolicited event. Currently, 7614 * the lpfc driver only supports matching on WWPN or WWNN for FARP. As such, 7615 * FARP_MATCH_PORT flag and FARP_MATCH_NODE flag are checked against the 7616 * Match Flag in the FARP request IOCB: if FARP_MATCH_PORT flag is set, the 7617 * remote PortName is compared against the FC PortName stored in the @vport 7618 * data structure; if FARP_MATCH_NODE flag is set, the remote NodeName is 7619 * compared against the FC NodeName stored in the @vport data structure. 7620 * If any of these matches and the FARP_REQUEST_FARPR flag is set in the 7621 * FARP request IOCB Response Flag, the lpfc_issue_els_farpr() routine is 7622 * invoked to send out FARP Response to the remote node. Before sending the 7623 * FARP Response, however, the FARP_REQUEST_PLOGI flag is check in the FARP 7624 * request IOCB Response Flag and, if it is set, the lpfc_issue_els_plogi() 7625 * routine is invoked to log into the remote port first. 7626 * 7627 * Return code 7628 * 0 - Either the FARP Match Mode not supported or successfully processed 7629 **/ 7630 static int 7631 lpfc_els_rcv_farp(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb, 7632 struct lpfc_nodelist *ndlp) 7633 { 7634 struct lpfc_dmabuf *pcmd; 7635 uint32_t *lp; 7636 IOCB_t *icmd; 7637 FARP *fp; 7638 uint32_t cnt, did; 7639 7640 icmd = &cmdiocb->iocb; 7641 did = icmd->un.elsreq64.remoteID; 7642 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2; 7643 lp = (uint32_t *) pcmd->virt; 7644 7645 lp++; 7646 fp = (FARP *) lp; 7647 /* FARP-REQ received from DID <did> */ 7648 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, 7649 "0601 FARP-REQ received from DID x%x\n", did); 7650 /* We will only support match on WWPN or WWNN */ 7651 if (fp->Mflags & ~(FARP_MATCH_NODE | FARP_MATCH_PORT)) { 7652 return 0; 7653 } 7654 7655 cnt = 0; 7656 /* If this FARP command is searching for my portname */ 7657 if (fp->Mflags & FARP_MATCH_PORT) { 7658 if (memcmp(&fp->RportName, &vport->fc_portname, 7659 sizeof(struct lpfc_name)) == 0) 7660 cnt = 1; 7661 } 7662 7663 /* If this FARP command is searching for my nodename */ 7664 if (fp->Mflags & FARP_MATCH_NODE) { 7665 if (memcmp(&fp->RnodeName, &vport->fc_nodename, 7666 sizeof(struct lpfc_name)) == 0) 7667 cnt = 1; 7668 } 7669 7670 if (cnt) { 7671 if ((ndlp->nlp_state == NLP_STE_UNMAPPED_NODE) || 7672 (ndlp->nlp_state == NLP_STE_MAPPED_NODE)) { 7673 /* Log back into the node before sending the FARP. */ 7674 if (fp->Rflags & FARP_REQUEST_PLOGI) { 7675 ndlp->nlp_prev_state = ndlp->nlp_state; 7676 lpfc_nlp_set_state(vport, ndlp, 7677 NLP_STE_PLOGI_ISSUE); 7678 lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0); 7679 } 7680 7681 /* Send a FARP response to that node */ 7682 if (fp->Rflags & FARP_REQUEST_FARPR) 7683 lpfc_issue_els_farpr(vport, did, 0); 7684 } 7685 } 7686 return 0; 7687 } 7688 7689 /** 7690 * lpfc_els_rcv_farpr - Process an unsolicited farp response iocb 7691 * @vport: pointer to a host virtual N_Port data structure. 7692 * @cmdiocb: pointer to lpfc command iocb data structure. 7693 * @ndlp: pointer to a node-list data structure. 7694 * 7695 * This routine processes Fibre Channel Address Resolution Protocol 7696 * Response (FARPR) IOCB received as an ELS unsolicited event. It simply 7697 * invokes the lpfc_els_rsp_acc() routine to the remote node to accept 7698 * the FARP response request. 7699 * 7700 * Return code 7701 * 0 - Successfully processed FARPR IOCB (currently always return 0) 7702 **/ 7703 static int 7704 lpfc_els_rcv_farpr(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb, 7705 struct lpfc_nodelist *ndlp) 7706 { 7707 struct lpfc_dmabuf *pcmd; 7708 uint32_t *lp; 7709 IOCB_t *icmd; 7710 uint32_t did; 7711 7712 icmd = &cmdiocb->iocb; 7713 did = icmd->un.elsreq64.remoteID; 7714 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2; 7715 lp = (uint32_t *) pcmd->virt; 7716 7717 lp++; 7718 /* FARP-RSP received from DID <did> */ 7719 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, 7720 "0600 FARP-RSP received from DID x%x\n", did); 7721 /* ACCEPT the Farp resp request */ 7722 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL); 7723 7724 return 0; 7725 } 7726 7727 /** 7728 * lpfc_els_rcv_fan - Process an unsolicited fan iocb command 7729 * @vport: pointer to a host virtual N_Port data structure. 7730 * @cmdiocb: pointer to lpfc command iocb data structure. 7731 * @fan_ndlp: pointer to a node-list data structure. 7732 * 7733 * This routine processes a Fabric Address Notification (FAN) IOCB 7734 * command received as an ELS unsolicited event. The FAN ELS command will 7735 * only be processed on a physical port (i.e., the @vport represents the 7736 * physical port). The fabric NodeName and PortName from the FAN IOCB are 7737 * compared against those in the phba data structure. If any of those is 7738 * different, the lpfc_initial_flogi() routine is invoked to initialize 7739 * Fabric Login (FLOGI) to the fabric to start the discover over. Otherwise, 7740 * if both of those are identical, the lpfc_issue_fabric_reglogin() routine 7741 * is invoked to register login to the fabric. 7742 * 7743 * Return code 7744 * 0 - Successfully processed fan iocb (currently always return 0). 7745 **/ 7746 static int 7747 lpfc_els_rcv_fan(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb, 7748 struct lpfc_nodelist *fan_ndlp) 7749 { 7750 struct lpfc_hba *phba = vport->phba; 7751 uint32_t *lp; 7752 FAN *fp; 7753 7754 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, "0265 FAN received\n"); 7755 lp = (uint32_t *)((struct lpfc_dmabuf *)cmdiocb->context2)->virt; 7756 fp = (FAN *) ++lp; 7757 /* FAN received; Fan does not have a reply sequence */ 7758 if ((vport == phba->pport) && 7759 (vport->port_state == LPFC_LOCAL_CFG_LINK)) { 7760 if ((memcmp(&phba->fc_fabparam.nodeName, &fp->FnodeName, 7761 sizeof(struct lpfc_name))) || 7762 (memcmp(&phba->fc_fabparam.portName, &fp->FportName, 7763 sizeof(struct lpfc_name)))) { 7764 /* This port has switched fabrics. FLOGI is required */ 7765 lpfc_issue_init_vfi(vport); 7766 } else { 7767 /* FAN verified - skip FLOGI */ 7768 vport->fc_myDID = vport->fc_prevDID; 7769 if (phba->sli_rev < LPFC_SLI_REV4) 7770 lpfc_issue_fabric_reglogin(vport); 7771 else { 7772 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, 7773 "3138 Need register VFI: (x%x/%x)\n", 7774 vport->fc_prevDID, vport->fc_myDID); 7775 lpfc_issue_reg_vfi(vport); 7776 } 7777 } 7778 } 7779 return 0; 7780 } 7781 7782 /** 7783 * lpfc_els_timeout - Handler funciton to the els timer 7784 * @ptr: holder for the timer function associated data. 7785 * 7786 * This routine is invoked by the ELS timer after timeout. It posts the ELS 7787 * timer timeout event by setting the WORKER_ELS_TMO bit to the work port 7788 * event bitmap and then invokes the lpfc_worker_wake_up() routine to wake 7789 * up the worker thread. It is for the worker thread to invoke the routine 7790 * lpfc_els_timeout_handler() to work on the posted event WORKER_ELS_TMO. 7791 **/ 7792 void 7793 lpfc_els_timeout(struct timer_list *t) 7794 { 7795 struct lpfc_vport *vport = from_timer(vport, t, els_tmofunc); 7796 struct lpfc_hba *phba = vport->phba; 7797 uint32_t tmo_posted; 7798 unsigned long iflag; 7799 7800 spin_lock_irqsave(&vport->work_port_lock, iflag); 7801 tmo_posted = vport->work_port_events & WORKER_ELS_TMO; 7802 if ((!tmo_posted) && (!(vport->load_flag & FC_UNLOADING))) 7803 vport->work_port_events |= WORKER_ELS_TMO; 7804 spin_unlock_irqrestore(&vport->work_port_lock, iflag); 7805 7806 if ((!tmo_posted) && (!(vport->load_flag & FC_UNLOADING))) 7807 lpfc_worker_wake_up(phba); 7808 return; 7809 } 7810 7811 7812 /** 7813 * lpfc_els_timeout_handler - Process an els timeout event 7814 * @vport: pointer to a virtual N_Port data structure. 7815 * 7816 * This routine is the actual handler function that processes an ELS timeout 7817 * event. It walks the ELS ring to get and abort all the IOCBs (except the 7818 * ABORT/CLOSE/FARP/FARPR/FDISC), which are associated with the @vport by 7819 * invoking the lpfc_sli_issue_abort_iotag() routine. 7820 **/ 7821 void 7822 lpfc_els_timeout_handler(struct lpfc_vport *vport) 7823 { 7824 struct lpfc_hba *phba = vport->phba; 7825 struct lpfc_sli_ring *pring; 7826 struct lpfc_iocbq *tmp_iocb, *piocb; 7827 IOCB_t *cmd = NULL; 7828 struct lpfc_dmabuf *pcmd; 7829 uint32_t els_command = 0; 7830 uint32_t timeout; 7831 uint32_t remote_ID = 0xffffffff; 7832 LIST_HEAD(abort_list); 7833 7834 7835 timeout = (uint32_t)(phba->fc_ratov << 1); 7836 7837 pring = lpfc_phba_elsring(phba); 7838 if (unlikely(!pring)) 7839 return; 7840 7841 if ((phba->pport->load_flag & FC_UNLOADING)) 7842 return; 7843 spin_lock_irq(&phba->hbalock); 7844 if (phba->sli_rev == LPFC_SLI_REV4) 7845 spin_lock(&pring->ring_lock); 7846 7847 if ((phba->pport->load_flag & FC_UNLOADING)) { 7848 if (phba->sli_rev == LPFC_SLI_REV4) 7849 spin_unlock(&pring->ring_lock); 7850 spin_unlock_irq(&phba->hbalock); 7851 return; 7852 } 7853 7854 list_for_each_entry_safe(piocb, tmp_iocb, &pring->txcmplq, list) { 7855 cmd = &piocb->iocb; 7856 7857 if ((piocb->iocb_flag & LPFC_IO_LIBDFC) != 0 || 7858 piocb->iocb.ulpCommand == CMD_ABORT_XRI_CN || 7859 piocb->iocb.ulpCommand == CMD_CLOSE_XRI_CN) 7860 continue; 7861 7862 if (piocb->vport != vport) 7863 continue; 7864 7865 pcmd = (struct lpfc_dmabuf *) piocb->context2; 7866 if (pcmd) 7867 els_command = *(uint32_t *) (pcmd->virt); 7868 7869 if (els_command == ELS_CMD_FARP || 7870 els_command == ELS_CMD_FARPR || 7871 els_command == ELS_CMD_FDISC) 7872 continue; 7873 7874 if (piocb->drvrTimeout > 0) { 7875 if (piocb->drvrTimeout >= timeout) 7876 piocb->drvrTimeout -= timeout; 7877 else 7878 piocb->drvrTimeout = 0; 7879 continue; 7880 } 7881 7882 remote_ID = 0xffffffff; 7883 if (cmd->ulpCommand != CMD_GEN_REQUEST64_CR) 7884 remote_ID = cmd->un.elsreq64.remoteID; 7885 else { 7886 struct lpfc_nodelist *ndlp; 7887 ndlp = __lpfc_findnode_rpi(vport, cmd->ulpContext); 7888 if (ndlp && NLP_CHK_NODE_ACT(ndlp)) 7889 remote_ID = ndlp->nlp_DID; 7890 } 7891 list_add_tail(&piocb->dlist, &abort_list); 7892 } 7893 if (phba->sli_rev == LPFC_SLI_REV4) 7894 spin_unlock(&pring->ring_lock); 7895 spin_unlock_irq(&phba->hbalock); 7896 7897 list_for_each_entry_safe(piocb, tmp_iocb, &abort_list, dlist) { 7898 cmd = &piocb->iocb; 7899 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS, 7900 "0127 ELS timeout Data: x%x x%x x%x " 7901 "x%x\n", els_command, 7902 remote_ID, cmd->ulpCommand, cmd->ulpIoTag); 7903 spin_lock_irq(&phba->hbalock); 7904 list_del_init(&piocb->dlist); 7905 lpfc_sli_issue_abort_iotag(phba, pring, piocb); 7906 spin_unlock_irq(&phba->hbalock); 7907 } 7908 7909 if (!list_empty(&pring->txcmplq)) 7910 if (!(phba->pport->load_flag & FC_UNLOADING)) 7911 mod_timer(&vport->els_tmofunc, 7912 jiffies + msecs_to_jiffies(1000 * timeout)); 7913 } 7914 7915 /** 7916 * lpfc_els_flush_cmd - Clean up the outstanding els commands to a vport 7917 * @vport: pointer to a host virtual N_Port data structure. 7918 * 7919 * This routine is used to clean up all the outstanding ELS commands on a 7920 * @vport. It first aborts the @vport by invoking lpfc_fabric_abort_vport() 7921 * routine. After that, it walks the ELS transmit queue to remove all the 7922 * IOCBs with the @vport other than the QUE_RING and ABORT/CLOSE IOCBs. For 7923 * the IOCBs with a non-NULL completion callback function, the callback 7924 * function will be invoked with the status set to IOSTAT_LOCAL_REJECT and 7925 * un.ulpWord[4] set to IOERR_SLI_ABORTED. For IOCBs with a NULL completion 7926 * callback function, the IOCB will simply be released. Finally, it walks 7927 * the ELS transmit completion queue to issue an abort IOCB to any transmit 7928 * completion queue IOCB that is associated with the @vport and is not 7929 * an IOCB from libdfc (i.e., the management plane IOCBs that are not 7930 * part of the discovery state machine) out to HBA by invoking the 7931 * lpfc_sli_issue_abort_iotag() routine. Note that this function issues the 7932 * abort IOCB to any transmit completion queueed IOCB, it does not guarantee 7933 * the IOCBs are aborted when this function returns. 7934 **/ 7935 void 7936 lpfc_els_flush_cmd(struct lpfc_vport *vport) 7937 { 7938 LIST_HEAD(abort_list); 7939 struct lpfc_hba *phba = vport->phba; 7940 struct lpfc_sli_ring *pring; 7941 struct lpfc_iocbq *tmp_iocb, *piocb; 7942 IOCB_t *cmd = NULL; 7943 7944 lpfc_fabric_abort_vport(vport); 7945 /* 7946 * For SLI3, only the hbalock is required. But SLI4 needs to coordinate 7947 * with the ring insert operation. Because lpfc_sli_issue_abort_iotag 7948 * ultimately grabs the ring_lock, the driver must splice the list into 7949 * a working list and release the locks before calling the abort. 7950 */ 7951 spin_lock_irq(&phba->hbalock); 7952 pring = lpfc_phba_elsring(phba); 7953 7954 /* Bail out if we've no ELS wq, like in PCI error recovery case. */ 7955 if (unlikely(!pring)) { 7956 spin_unlock_irq(&phba->hbalock); 7957 return; 7958 } 7959 7960 if (phba->sli_rev == LPFC_SLI_REV4) 7961 spin_lock(&pring->ring_lock); 7962 7963 list_for_each_entry_safe(piocb, tmp_iocb, &pring->txcmplq, list) { 7964 if (piocb->iocb_flag & LPFC_IO_LIBDFC) 7965 continue; 7966 7967 if (piocb->vport != vport) 7968 continue; 7969 list_add_tail(&piocb->dlist, &abort_list); 7970 } 7971 if (phba->sli_rev == LPFC_SLI_REV4) 7972 spin_unlock(&pring->ring_lock); 7973 spin_unlock_irq(&phba->hbalock); 7974 /* Abort each iocb on the aborted list and remove the dlist links. */ 7975 list_for_each_entry_safe(piocb, tmp_iocb, &abort_list, dlist) { 7976 spin_lock_irq(&phba->hbalock); 7977 list_del_init(&piocb->dlist); 7978 lpfc_sli_issue_abort_iotag(phba, pring, piocb); 7979 spin_unlock_irq(&phba->hbalock); 7980 } 7981 if (!list_empty(&abort_list)) 7982 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS, 7983 "3387 abort list for txq not empty\n"); 7984 INIT_LIST_HEAD(&abort_list); 7985 7986 spin_lock_irq(&phba->hbalock); 7987 if (phba->sli_rev == LPFC_SLI_REV4) 7988 spin_lock(&pring->ring_lock); 7989 7990 list_for_each_entry_safe(piocb, tmp_iocb, &pring->txq, list) { 7991 cmd = &piocb->iocb; 7992 7993 if (piocb->iocb_flag & LPFC_IO_LIBDFC) { 7994 continue; 7995 } 7996 7997 /* Do not flush out the QUE_RING and ABORT/CLOSE iocbs */ 7998 if (cmd->ulpCommand == CMD_QUE_RING_BUF_CN || 7999 cmd->ulpCommand == CMD_QUE_RING_BUF64_CN || 8000 cmd->ulpCommand == CMD_CLOSE_XRI_CN || 8001 cmd->ulpCommand == CMD_ABORT_XRI_CN) 8002 continue; 8003 8004 if (piocb->vport != vport) 8005 continue; 8006 8007 list_del_init(&piocb->list); 8008 list_add_tail(&piocb->list, &abort_list); 8009 } 8010 if (phba->sli_rev == LPFC_SLI_REV4) 8011 spin_unlock(&pring->ring_lock); 8012 spin_unlock_irq(&phba->hbalock); 8013 8014 /* Cancell all the IOCBs from the completions list */ 8015 lpfc_sli_cancel_iocbs(phba, &abort_list, 8016 IOSTAT_LOCAL_REJECT, IOERR_SLI_ABORTED); 8017 8018 return; 8019 } 8020 8021 /** 8022 * lpfc_els_flush_all_cmd - Clean up all the outstanding els commands to a HBA 8023 * @phba: pointer to lpfc hba data structure. 8024 * 8025 * This routine is used to clean up all the outstanding ELS commands on a 8026 * @phba. It first aborts the @phba by invoking the lpfc_fabric_abort_hba() 8027 * routine. After that, it walks the ELS transmit queue to remove all the 8028 * IOCBs to the @phba other than the QUE_RING and ABORT/CLOSE IOCBs. For 8029 * the IOCBs with the completion callback function associated, the callback 8030 * function will be invoked with the status set to IOSTAT_LOCAL_REJECT and 8031 * un.ulpWord[4] set to IOERR_SLI_ABORTED. For IOCBs without the completion 8032 * callback function associated, the IOCB will simply be released. Finally, 8033 * it walks the ELS transmit completion queue to issue an abort IOCB to any 8034 * transmit completion queue IOCB that is not an IOCB from libdfc (i.e., the 8035 * management plane IOCBs that are not part of the discovery state machine) 8036 * out to HBA by invoking the lpfc_sli_issue_abort_iotag() routine. 8037 **/ 8038 void 8039 lpfc_els_flush_all_cmd(struct lpfc_hba *phba) 8040 { 8041 struct lpfc_vport *vport; 8042 8043 spin_lock_irq(&phba->port_list_lock); 8044 list_for_each_entry(vport, &phba->port_list, listentry) 8045 lpfc_els_flush_cmd(vport); 8046 spin_unlock_irq(&phba->port_list_lock); 8047 8048 return; 8049 } 8050 8051 /** 8052 * lpfc_send_els_failure_event - Posts an ELS command failure event 8053 * @phba: Pointer to hba context object. 8054 * @cmdiocbp: Pointer to command iocb which reported error. 8055 * @rspiocbp: Pointer to response iocb which reported error. 8056 * 8057 * This function sends an event when there is an ELS command 8058 * failure. 8059 **/ 8060 void 8061 lpfc_send_els_failure_event(struct lpfc_hba *phba, 8062 struct lpfc_iocbq *cmdiocbp, 8063 struct lpfc_iocbq *rspiocbp) 8064 { 8065 struct lpfc_vport *vport = cmdiocbp->vport; 8066 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 8067 struct lpfc_lsrjt_event lsrjt_event; 8068 struct lpfc_fabric_event_header fabric_event; 8069 struct ls_rjt stat; 8070 struct lpfc_nodelist *ndlp; 8071 uint32_t *pcmd; 8072 8073 ndlp = cmdiocbp->context1; 8074 if (!ndlp || !NLP_CHK_NODE_ACT(ndlp)) 8075 return; 8076 8077 if (rspiocbp->iocb.ulpStatus == IOSTAT_LS_RJT) { 8078 lsrjt_event.header.event_type = FC_REG_ELS_EVENT; 8079 lsrjt_event.header.subcategory = LPFC_EVENT_LSRJT_RCV; 8080 memcpy(lsrjt_event.header.wwpn, &ndlp->nlp_portname, 8081 sizeof(struct lpfc_name)); 8082 memcpy(lsrjt_event.header.wwnn, &ndlp->nlp_nodename, 8083 sizeof(struct lpfc_name)); 8084 pcmd = (uint32_t *) (((struct lpfc_dmabuf *) 8085 cmdiocbp->context2)->virt); 8086 lsrjt_event.command = (pcmd != NULL) ? *pcmd : 0; 8087 stat.un.lsRjtError = be32_to_cpu(rspiocbp->iocb.un.ulpWord[4]); 8088 lsrjt_event.reason_code = stat.un.b.lsRjtRsnCode; 8089 lsrjt_event.explanation = stat.un.b.lsRjtRsnCodeExp; 8090 fc_host_post_vendor_event(shost, 8091 fc_get_event_number(), 8092 sizeof(lsrjt_event), 8093 (char *)&lsrjt_event, 8094 LPFC_NL_VENDOR_ID); 8095 return; 8096 } 8097 if ((rspiocbp->iocb.ulpStatus == IOSTAT_NPORT_BSY) || 8098 (rspiocbp->iocb.ulpStatus == IOSTAT_FABRIC_BSY)) { 8099 fabric_event.event_type = FC_REG_FABRIC_EVENT; 8100 if (rspiocbp->iocb.ulpStatus == IOSTAT_NPORT_BSY) 8101 fabric_event.subcategory = LPFC_EVENT_PORT_BUSY; 8102 else 8103 fabric_event.subcategory = LPFC_EVENT_FABRIC_BUSY; 8104 memcpy(fabric_event.wwpn, &ndlp->nlp_portname, 8105 sizeof(struct lpfc_name)); 8106 memcpy(fabric_event.wwnn, &ndlp->nlp_nodename, 8107 sizeof(struct lpfc_name)); 8108 fc_host_post_vendor_event(shost, 8109 fc_get_event_number(), 8110 sizeof(fabric_event), 8111 (char *)&fabric_event, 8112 LPFC_NL_VENDOR_ID); 8113 return; 8114 } 8115 8116 } 8117 8118 /** 8119 * lpfc_send_els_event - Posts unsolicited els event 8120 * @vport: Pointer to vport object. 8121 * @ndlp: Pointer FC node object. 8122 * @cmd: ELS command code. 8123 * 8124 * This function posts an event when there is an incoming 8125 * unsolicited ELS command. 8126 **/ 8127 static void 8128 lpfc_send_els_event(struct lpfc_vport *vport, 8129 struct lpfc_nodelist *ndlp, 8130 uint32_t *payload) 8131 { 8132 struct lpfc_els_event_header *els_data = NULL; 8133 struct lpfc_logo_event *logo_data = NULL; 8134 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 8135 8136 if (*payload == ELS_CMD_LOGO) { 8137 logo_data = kmalloc(sizeof(struct lpfc_logo_event), GFP_KERNEL); 8138 if (!logo_data) { 8139 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS, 8140 "0148 Failed to allocate memory " 8141 "for LOGO event\n"); 8142 return; 8143 } 8144 els_data = &logo_data->header; 8145 } else { 8146 els_data = kmalloc(sizeof(struct lpfc_els_event_header), 8147 GFP_KERNEL); 8148 if (!els_data) { 8149 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS, 8150 "0149 Failed to allocate memory " 8151 "for ELS event\n"); 8152 return; 8153 } 8154 } 8155 els_data->event_type = FC_REG_ELS_EVENT; 8156 switch (*payload) { 8157 case ELS_CMD_PLOGI: 8158 els_data->subcategory = LPFC_EVENT_PLOGI_RCV; 8159 break; 8160 case ELS_CMD_PRLO: 8161 els_data->subcategory = LPFC_EVENT_PRLO_RCV; 8162 break; 8163 case ELS_CMD_ADISC: 8164 els_data->subcategory = LPFC_EVENT_ADISC_RCV; 8165 break; 8166 case ELS_CMD_LOGO: 8167 els_data->subcategory = LPFC_EVENT_LOGO_RCV; 8168 /* Copy the WWPN in the LOGO payload */ 8169 memcpy(logo_data->logo_wwpn, &payload[2], 8170 sizeof(struct lpfc_name)); 8171 break; 8172 default: 8173 kfree(els_data); 8174 return; 8175 } 8176 memcpy(els_data->wwpn, &ndlp->nlp_portname, sizeof(struct lpfc_name)); 8177 memcpy(els_data->wwnn, &ndlp->nlp_nodename, sizeof(struct lpfc_name)); 8178 if (*payload == ELS_CMD_LOGO) { 8179 fc_host_post_vendor_event(shost, 8180 fc_get_event_number(), 8181 sizeof(struct lpfc_logo_event), 8182 (char *)logo_data, 8183 LPFC_NL_VENDOR_ID); 8184 kfree(logo_data); 8185 } else { 8186 fc_host_post_vendor_event(shost, 8187 fc_get_event_number(), 8188 sizeof(struct lpfc_els_event_header), 8189 (char *)els_data, 8190 LPFC_NL_VENDOR_ID); 8191 kfree(els_data); 8192 } 8193 8194 return; 8195 } 8196 8197 8198 /** 8199 * lpfc_els_unsol_buffer - Process an unsolicited event data buffer 8200 * @phba: pointer to lpfc hba data structure. 8201 * @pring: pointer to a SLI ring. 8202 * @vport: pointer to a host virtual N_Port data structure. 8203 * @elsiocb: pointer to lpfc els command iocb data structure. 8204 * 8205 * This routine is used for processing the IOCB associated with a unsolicited 8206 * event. It first determines whether there is an existing ndlp that matches 8207 * the DID from the unsolicited IOCB. If not, it will create a new one with 8208 * the DID from the unsolicited IOCB. The ELS command from the unsolicited 8209 * IOCB is then used to invoke the proper routine and to set up proper state 8210 * of the discovery state machine. 8211 **/ 8212 static void 8213 lpfc_els_unsol_buffer(struct lpfc_hba *phba, struct lpfc_sli_ring *pring, 8214 struct lpfc_vport *vport, struct lpfc_iocbq *elsiocb) 8215 { 8216 struct Scsi_Host *shost; 8217 struct lpfc_nodelist *ndlp; 8218 struct ls_rjt stat; 8219 uint32_t *payload; 8220 uint32_t cmd, did, newnode; 8221 uint8_t rjt_exp, rjt_err = 0, init_link = 0; 8222 IOCB_t *icmd = &elsiocb->iocb; 8223 LPFC_MBOXQ_t *mbox; 8224 8225 if (!vport || !(elsiocb->context2)) 8226 goto dropit; 8227 8228 newnode = 0; 8229 payload = ((struct lpfc_dmabuf *)elsiocb->context2)->virt; 8230 cmd = *payload; 8231 if ((phba->sli3_options & LPFC_SLI3_HBQ_ENABLED) == 0) 8232 lpfc_post_buffer(phba, pring, 1); 8233 8234 did = icmd->un.rcvels.remoteID; 8235 if (icmd->ulpStatus) { 8236 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL, 8237 "RCV Unsol ELS: status:x%x/x%x did:x%x", 8238 icmd->ulpStatus, icmd->un.ulpWord[4], did); 8239 goto dropit; 8240 } 8241 8242 /* Check to see if link went down during discovery */ 8243 if (lpfc_els_chk_latt(vport)) 8244 goto dropit; 8245 8246 /* Ignore traffic received during vport shutdown. */ 8247 if (vport->load_flag & FC_UNLOADING) 8248 goto dropit; 8249 8250 /* If NPort discovery is delayed drop incoming ELS */ 8251 if ((vport->fc_flag & FC_DISC_DELAYED) && 8252 (cmd != ELS_CMD_PLOGI)) 8253 goto dropit; 8254 8255 ndlp = lpfc_findnode_did(vport, did); 8256 if (!ndlp) { 8257 /* Cannot find existing Fabric ndlp, so allocate a new one */ 8258 ndlp = lpfc_nlp_init(vport, did); 8259 if (!ndlp) 8260 goto dropit; 8261 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE); 8262 newnode = 1; 8263 if ((did & Fabric_DID_MASK) == Fabric_DID_MASK) 8264 ndlp->nlp_type |= NLP_FABRIC; 8265 } else if (!NLP_CHK_NODE_ACT(ndlp)) { 8266 ndlp = lpfc_enable_node(vport, ndlp, 8267 NLP_STE_UNUSED_NODE); 8268 if (!ndlp) 8269 goto dropit; 8270 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE); 8271 newnode = 1; 8272 if ((did & Fabric_DID_MASK) == Fabric_DID_MASK) 8273 ndlp->nlp_type |= NLP_FABRIC; 8274 } else if (ndlp->nlp_state == NLP_STE_UNUSED_NODE) { 8275 /* This is similar to the new node path */ 8276 ndlp = lpfc_nlp_get(ndlp); 8277 if (!ndlp) 8278 goto dropit; 8279 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE); 8280 newnode = 1; 8281 } 8282 8283 phba->fc_stat.elsRcvFrame++; 8284 8285 /* 8286 * Do not process any unsolicited ELS commands 8287 * if the ndlp is in DEV_LOSS 8288 */ 8289 shost = lpfc_shost_from_vport(vport); 8290 spin_lock_irq(shost->host_lock); 8291 if (ndlp->nlp_flag & NLP_IN_DEV_LOSS) { 8292 spin_unlock_irq(shost->host_lock); 8293 goto dropit; 8294 } 8295 spin_unlock_irq(shost->host_lock); 8296 8297 elsiocb->context1 = lpfc_nlp_get(ndlp); 8298 elsiocb->vport = vport; 8299 8300 if ((cmd & ELS_CMD_MASK) == ELS_CMD_RSCN) { 8301 cmd &= ELS_CMD_MASK; 8302 } 8303 /* ELS command <elsCmd> received from NPORT <did> */ 8304 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, 8305 "0112 ELS command x%x received from NPORT x%x " 8306 "Data: x%x x%x x%x x%x\n", 8307 cmd, did, vport->port_state, vport->fc_flag, 8308 vport->fc_myDID, vport->fc_prevDID); 8309 8310 /* reject till our FLOGI completes or PLOGI assigned DID via PT2PT */ 8311 if ((vport->port_state < LPFC_FABRIC_CFG_LINK) && 8312 (cmd != ELS_CMD_FLOGI) && 8313 !((cmd == ELS_CMD_PLOGI) && (vport->fc_flag & FC_PT2PT))) { 8314 rjt_err = LSRJT_LOGICAL_BSY; 8315 rjt_exp = LSEXP_NOTHING_MORE; 8316 goto lsrjt; 8317 } 8318 8319 switch (cmd) { 8320 case ELS_CMD_PLOGI: 8321 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL, 8322 "RCV PLOGI: did:x%x/ste:x%x flg:x%x", 8323 did, vport->port_state, ndlp->nlp_flag); 8324 8325 phba->fc_stat.elsRcvPLOGI++; 8326 ndlp = lpfc_plogi_confirm_nport(phba, payload, ndlp); 8327 if (phba->sli_rev == LPFC_SLI_REV4 && 8328 (phba->pport->fc_flag & FC_PT2PT)) { 8329 vport->fc_prevDID = vport->fc_myDID; 8330 /* Our DID needs to be updated before registering 8331 * the vfi. This is done in lpfc_rcv_plogi but 8332 * that is called after the reg_vfi. 8333 */ 8334 vport->fc_myDID = elsiocb->iocb.un.rcvels.parmRo; 8335 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, 8336 "3312 Remote port assigned DID x%x " 8337 "%x\n", vport->fc_myDID, 8338 vport->fc_prevDID); 8339 } 8340 8341 lpfc_send_els_event(vport, ndlp, payload); 8342 8343 /* If Nport discovery is delayed, reject PLOGIs */ 8344 if (vport->fc_flag & FC_DISC_DELAYED) { 8345 rjt_err = LSRJT_UNABLE_TPC; 8346 rjt_exp = LSEXP_NOTHING_MORE; 8347 break; 8348 } 8349 8350 if (vport->port_state < LPFC_DISC_AUTH) { 8351 if (!(phba->pport->fc_flag & FC_PT2PT) || 8352 (phba->pport->fc_flag & FC_PT2PT_PLOGI)) { 8353 rjt_err = LSRJT_UNABLE_TPC; 8354 rjt_exp = LSEXP_NOTHING_MORE; 8355 break; 8356 } 8357 } 8358 8359 spin_lock_irq(shost->host_lock); 8360 ndlp->nlp_flag &= ~NLP_TARGET_REMOVE; 8361 spin_unlock_irq(shost->host_lock); 8362 8363 lpfc_disc_state_machine(vport, ndlp, elsiocb, 8364 NLP_EVT_RCV_PLOGI); 8365 8366 break; 8367 case ELS_CMD_FLOGI: 8368 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL, 8369 "RCV FLOGI: did:x%x/ste:x%x flg:x%x", 8370 did, vport->port_state, ndlp->nlp_flag); 8371 8372 phba->fc_stat.elsRcvFLOGI++; 8373 8374 /* If the driver believes fabric discovery is done and is ready, 8375 * bounce the link. There is some descrepancy. 8376 */ 8377 if (vport->port_state >= LPFC_LOCAL_CFG_LINK && 8378 vport->fc_flag & FC_PT2PT && 8379 vport->rcv_flogi_cnt >= 1) { 8380 rjt_err = LSRJT_LOGICAL_BSY; 8381 rjt_exp = LSEXP_NOTHING_MORE; 8382 init_link++; 8383 goto lsrjt; 8384 } 8385 8386 lpfc_els_rcv_flogi(vport, elsiocb, ndlp); 8387 if (newnode) 8388 lpfc_nlp_put(ndlp); 8389 break; 8390 case ELS_CMD_LOGO: 8391 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL, 8392 "RCV LOGO: did:x%x/ste:x%x flg:x%x", 8393 did, vport->port_state, ndlp->nlp_flag); 8394 8395 phba->fc_stat.elsRcvLOGO++; 8396 lpfc_send_els_event(vport, ndlp, payload); 8397 if (vport->port_state < LPFC_DISC_AUTH) { 8398 rjt_err = LSRJT_UNABLE_TPC; 8399 rjt_exp = LSEXP_NOTHING_MORE; 8400 break; 8401 } 8402 lpfc_disc_state_machine(vport, ndlp, elsiocb, NLP_EVT_RCV_LOGO); 8403 break; 8404 case ELS_CMD_PRLO: 8405 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL, 8406 "RCV PRLO: did:x%x/ste:x%x flg:x%x", 8407 did, vport->port_state, ndlp->nlp_flag); 8408 8409 phba->fc_stat.elsRcvPRLO++; 8410 lpfc_send_els_event(vport, ndlp, payload); 8411 if (vport->port_state < LPFC_DISC_AUTH) { 8412 rjt_err = LSRJT_UNABLE_TPC; 8413 rjt_exp = LSEXP_NOTHING_MORE; 8414 break; 8415 } 8416 lpfc_disc_state_machine(vport, ndlp, elsiocb, NLP_EVT_RCV_PRLO); 8417 break; 8418 case ELS_CMD_LCB: 8419 phba->fc_stat.elsRcvLCB++; 8420 lpfc_els_rcv_lcb(vport, elsiocb, ndlp); 8421 break; 8422 case ELS_CMD_RDP: 8423 phba->fc_stat.elsRcvRDP++; 8424 lpfc_els_rcv_rdp(vport, elsiocb, ndlp); 8425 break; 8426 case ELS_CMD_RSCN: 8427 phba->fc_stat.elsRcvRSCN++; 8428 lpfc_els_rcv_rscn(vport, elsiocb, ndlp); 8429 if (newnode) 8430 lpfc_nlp_put(ndlp); 8431 break; 8432 case ELS_CMD_ADISC: 8433 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL, 8434 "RCV ADISC: did:x%x/ste:x%x flg:x%x", 8435 did, vport->port_state, ndlp->nlp_flag); 8436 8437 lpfc_send_els_event(vport, ndlp, payload); 8438 phba->fc_stat.elsRcvADISC++; 8439 if (vport->port_state < LPFC_DISC_AUTH) { 8440 rjt_err = LSRJT_UNABLE_TPC; 8441 rjt_exp = LSEXP_NOTHING_MORE; 8442 break; 8443 } 8444 lpfc_disc_state_machine(vport, ndlp, elsiocb, 8445 NLP_EVT_RCV_ADISC); 8446 break; 8447 case ELS_CMD_PDISC: 8448 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL, 8449 "RCV PDISC: did:x%x/ste:x%x flg:x%x", 8450 did, vport->port_state, ndlp->nlp_flag); 8451 8452 phba->fc_stat.elsRcvPDISC++; 8453 if (vport->port_state < LPFC_DISC_AUTH) { 8454 rjt_err = LSRJT_UNABLE_TPC; 8455 rjt_exp = LSEXP_NOTHING_MORE; 8456 break; 8457 } 8458 lpfc_disc_state_machine(vport, ndlp, elsiocb, 8459 NLP_EVT_RCV_PDISC); 8460 break; 8461 case ELS_CMD_FARPR: 8462 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL, 8463 "RCV FARPR: did:x%x/ste:x%x flg:x%x", 8464 did, vport->port_state, ndlp->nlp_flag); 8465 8466 phba->fc_stat.elsRcvFARPR++; 8467 lpfc_els_rcv_farpr(vport, elsiocb, ndlp); 8468 break; 8469 case ELS_CMD_FARP: 8470 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL, 8471 "RCV FARP: did:x%x/ste:x%x flg:x%x", 8472 did, vport->port_state, ndlp->nlp_flag); 8473 8474 phba->fc_stat.elsRcvFARP++; 8475 lpfc_els_rcv_farp(vport, elsiocb, ndlp); 8476 break; 8477 case ELS_CMD_FAN: 8478 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL, 8479 "RCV FAN: did:x%x/ste:x%x flg:x%x", 8480 did, vport->port_state, ndlp->nlp_flag); 8481 8482 phba->fc_stat.elsRcvFAN++; 8483 lpfc_els_rcv_fan(vport, elsiocb, ndlp); 8484 break; 8485 case ELS_CMD_PRLI: 8486 case ELS_CMD_NVMEPRLI: 8487 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL, 8488 "RCV PRLI: did:x%x/ste:x%x flg:x%x", 8489 did, vport->port_state, ndlp->nlp_flag); 8490 8491 phba->fc_stat.elsRcvPRLI++; 8492 if ((vport->port_state < LPFC_DISC_AUTH) && 8493 (vport->fc_flag & FC_FABRIC)) { 8494 rjt_err = LSRJT_UNABLE_TPC; 8495 rjt_exp = LSEXP_NOTHING_MORE; 8496 break; 8497 } 8498 lpfc_disc_state_machine(vport, ndlp, elsiocb, NLP_EVT_RCV_PRLI); 8499 break; 8500 case ELS_CMD_LIRR: 8501 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL, 8502 "RCV LIRR: did:x%x/ste:x%x flg:x%x", 8503 did, vport->port_state, ndlp->nlp_flag); 8504 8505 phba->fc_stat.elsRcvLIRR++; 8506 lpfc_els_rcv_lirr(vport, elsiocb, ndlp); 8507 if (newnode) 8508 lpfc_nlp_put(ndlp); 8509 break; 8510 case ELS_CMD_RLS: 8511 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL, 8512 "RCV RLS: did:x%x/ste:x%x flg:x%x", 8513 did, vport->port_state, ndlp->nlp_flag); 8514 8515 phba->fc_stat.elsRcvRLS++; 8516 lpfc_els_rcv_rls(vport, elsiocb, ndlp); 8517 if (newnode) 8518 lpfc_nlp_put(ndlp); 8519 break; 8520 case ELS_CMD_RPS: 8521 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL, 8522 "RCV RPS: did:x%x/ste:x%x flg:x%x", 8523 did, vport->port_state, ndlp->nlp_flag); 8524 8525 phba->fc_stat.elsRcvRPS++; 8526 lpfc_els_rcv_rps(vport, elsiocb, ndlp); 8527 if (newnode) 8528 lpfc_nlp_put(ndlp); 8529 break; 8530 case ELS_CMD_RPL: 8531 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL, 8532 "RCV RPL: did:x%x/ste:x%x flg:x%x", 8533 did, vport->port_state, ndlp->nlp_flag); 8534 8535 phba->fc_stat.elsRcvRPL++; 8536 lpfc_els_rcv_rpl(vport, elsiocb, ndlp); 8537 if (newnode) 8538 lpfc_nlp_put(ndlp); 8539 break; 8540 case ELS_CMD_RNID: 8541 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL, 8542 "RCV RNID: did:x%x/ste:x%x flg:x%x", 8543 did, vport->port_state, ndlp->nlp_flag); 8544 8545 phba->fc_stat.elsRcvRNID++; 8546 lpfc_els_rcv_rnid(vport, elsiocb, ndlp); 8547 if (newnode) 8548 lpfc_nlp_put(ndlp); 8549 break; 8550 case ELS_CMD_RTV: 8551 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL, 8552 "RCV RTV: did:x%x/ste:x%x flg:x%x", 8553 did, vport->port_state, ndlp->nlp_flag); 8554 phba->fc_stat.elsRcvRTV++; 8555 lpfc_els_rcv_rtv(vport, elsiocb, ndlp); 8556 if (newnode) 8557 lpfc_nlp_put(ndlp); 8558 break; 8559 case ELS_CMD_RRQ: 8560 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL, 8561 "RCV RRQ: did:x%x/ste:x%x flg:x%x", 8562 did, vport->port_state, ndlp->nlp_flag); 8563 8564 phba->fc_stat.elsRcvRRQ++; 8565 lpfc_els_rcv_rrq(vport, elsiocb, ndlp); 8566 if (newnode) 8567 lpfc_nlp_put(ndlp); 8568 break; 8569 case ELS_CMD_ECHO: 8570 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL, 8571 "RCV ECHO: did:x%x/ste:x%x flg:x%x", 8572 did, vport->port_state, ndlp->nlp_flag); 8573 8574 phba->fc_stat.elsRcvECHO++; 8575 lpfc_els_rcv_echo(vport, elsiocb, ndlp); 8576 if (newnode) 8577 lpfc_nlp_put(ndlp); 8578 break; 8579 case ELS_CMD_REC: 8580 /* receive this due to exchange closed */ 8581 rjt_err = LSRJT_UNABLE_TPC; 8582 rjt_exp = LSEXP_INVALID_OX_RX; 8583 break; 8584 case ELS_CMD_FPIN: 8585 /* 8586 * Received FPIN from fabric - pass it to the 8587 * transport FPIN handler. 8588 */ 8589 fc_host_fpin_rcv(shost, elsiocb->iocb.unsli3.rcvsli3.acc_len, 8590 (char *)payload); 8591 break; 8592 default: 8593 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL, 8594 "RCV ELS cmd: cmd:x%x did:x%x/ste:x%x", 8595 cmd, did, vport->port_state); 8596 8597 /* Unsupported ELS command, reject */ 8598 rjt_err = LSRJT_CMD_UNSUPPORTED; 8599 rjt_exp = LSEXP_NOTHING_MORE; 8600 8601 /* Unknown ELS command <elsCmd> received from NPORT <did> */ 8602 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS, 8603 "0115 Unknown ELS command x%x " 8604 "received from NPORT x%x\n", cmd, did); 8605 if (newnode) 8606 lpfc_nlp_put(ndlp); 8607 break; 8608 } 8609 8610 lsrjt: 8611 /* check if need to LS_RJT received ELS cmd */ 8612 if (rjt_err) { 8613 memset(&stat, 0, sizeof(stat)); 8614 stat.un.b.lsRjtRsnCode = rjt_err; 8615 stat.un.b.lsRjtRsnCodeExp = rjt_exp; 8616 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, elsiocb, ndlp, 8617 NULL); 8618 } 8619 8620 lpfc_nlp_put(elsiocb->context1); 8621 elsiocb->context1 = NULL; 8622 8623 /* Special case. Driver received an unsolicited command that 8624 * unsupportable given the driver's current state. Reset the 8625 * link and start over. 8626 */ 8627 if (init_link) { 8628 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 8629 if (!mbox) 8630 return; 8631 lpfc_linkdown(phba); 8632 lpfc_init_link(phba, mbox, 8633 phba->cfg_topology, 8634 phba->cfg_link_speed); 8635 mbox->u.mb.un.varInitLnk.lipsr_AL_PA = 0; 8636 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl; 8637 mbox->vport = vport; 8638 if (lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT) == 8639 MBX_NOT_FINISHED) 8640 mempool_free(mbox, phba->mbox_mem_pool); 8641 } 8642 8643 return; 8644 8645 dropit: 8646 if (vport && !(vport->load_flag & FC_UNLOADING)) 8647 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS, 8648 "0111 Dropping received ELS cmd " 8649 "Data: x%x x%x x%x\n", 8650 icmd->ulpStatus, icmd->un.ulpWord[4], icmd->ulpTimeout); 8651 phba->fc_stat.elsRcvDrop++; 8652 } 8653 8654 /** 8655 * lpfc_els_unsol_event - Process an unsolicited event from an els sli ring 8656 * @phba: pointer to lpfc hba data structure. 8657 * @pring: pointer to a SLI ring. 8658 * @elsiocb: pointer to lpfc els iocb data structure. 8659 * 8660 * This routine is used to process an unsolicited event received from a SLI 8661 * (Service Level Interface) ring. The actual processing of the data buffer 8662 * associated with the unsolicited event is done by invoking the routine 8663 * lpfc_els_unsol_buffer() after properly set up the iocb buffer from the 8664 * SLI ring on which the unsolicited event was received. 8665 **/ 8666 void 8667 lpfc_els_unsol_event(struct lpfc_hba *phba, struct lpfc_sli_ring *pring, 8668 struct lpfc_iocbq *elsiocb) 8669 { 8670 struct lpfc_vport *vport = phba->pport; 8671 IOCB_t *icmd = &elsiocb->iocb; 8672 dma_addr_t paddr; 8673 struct lpfc_dmabuf *bdeBuf1 = elsiocb->context2; 8674 struct lpfc_dmabuf *bdeBuf2 = elsiocb->context3; 8675 8676 elsiocb->context1 = NULL; 8677 elsiocb->context2 = NULL; 8678 elsiocb->context3 = NULL; 8679 8680 if (icmd->ulpStatus == IOSTAT_NEED_BUFFER) { 8681 lpfc_sli_hbqbuf_add_hbqs(phba, LPFC_ELS_HBQ); 8682 } else if (icmd->ulpStatus == IOSTAT_LOCAL_REJECT && 8683 (icmd->un.ulpWord[4] & IOERR_PARAM_MASK) == 8684 IOERR_RCV_BUFFER_WAITING) { 8685 phba->fc_stat.NoRcvBuf++; 8686 /* Not enough posted buffers; Try posting more buffers */ 8687 if (!(phba->sli3_options & LPFC_SLI3_HBQ_ENABLED)) 8688 lpfc_post_buffer(phba, pring, 0); 8689 return; 8690 } 8691 8692 if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) && 8693 (icmd->ulpCommand == CMD_IOCB_RCV_ELS64_CX || 8694 icmd->ulpCommand == CMD_IOCB_RCV_SEQ64_CX)) { 8695 if (icmd->unsli3.rcvsli3.vpi == 0xffff) 8696 vport = phba->pport; 8697 else 8698 vport = lpfc_find_vport_by_vpid(phba, 8699 icmd->unsli3.rcvsli3.vpi); 8700 } 8701 8702 /* If there are no BDEs associated 8703 * with this IOCB, there is nothing to do. 8704 */ 8705 if (icmd->ulpBdeCount == 0) 8706 return; 8707 8708 /* type of ELS cmd is first 32bit word 8709 * in packet 8710 */ 8711 if (phba->sli3_options & LPFC_SLI3_HBQ_ENABLED) { 8712 elsiocb->context2 = bdeBuf1; 8713 } else { 8714 paddr = getPaddr(icmd->un.cont64[0].addrHigh, 8715 icmd->un.cont64[0].addrLow); 8716 elsiocb->context2 = lpfc_sli_ringpostbuf_get(phba, pring, 8717 paddr); 8718 } 8719 8720 lpfc_els_unsol_buffer(phba, pring, vport, elsiocb); 8721 /* 8722 * The different unsolicited event handlers would tell us 8723 * if they are done with "mp" by setting context2 to NULL. 8724 */ 8725 if (elsiocb->context2) { 8726 lpfc_in_buf_free(phba, (struct lpfc_dmabuf *)elsiocb->context2); 8727 elsiocb->context2 = NULL; 8728 } 8729 8730 /* RCV_ELS64_CX provide for 2 BDEs - process 2nd if included */ 8731 if ((phba->sli3_options & LPFC_SLI3_HBQ_ENABLED) && 8732 icmd->ulpBdeCount == 2) { 8733 elsiocb->context2 = bdeBuf2; 8734 lpfc_els_unsol_buffer(phba, pring, vport, elsiocb); 8735 /* free mp if we are done with it */ 8736 if (elsiocb->context2) { 8737 lpfc_in_buf_free(phba, elsiocb->context2); 8738 elsiocb->context2 = NULL; 8739 } 8740 } 8741 } 8742 8743 static void 8744 lpfc_start_fdmi(struct lpfc_vport *vport) 8745 { 8746 struct lpfc_nodelist *ndlp; 8747 8748 /* If this is the first time, allocate an ndlp and initialize 8749 * it. Otherwise, make sure the node is enabled and then do the 8750 * login. 8751 */ 8752 ndlp = lpfc_findnode_did(vport, FDMI_DID); 8753 if (!ndlp) { 8754 ndlp = lpfc_nlp_init(vport, FDMI_DID); 8755 if (ndlp) { 8756 ndlp->nlp_type |= NLP_FABRIC; 8757 } else { 8758 return; 8759 } 8760 } 8761 if (!NLP_CHK_NODE_ACT(ndlp)) 8762 ndlp = lpfc_enable_node(vport, ndlp, NLP_STE_NPR_NODE); 8763 8764 if (ndlp) { 8765 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE); 8766 lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0); 8767 } 8768 } 8769 8770 /** 8771 * lpfc_do_scr_ns_plogi - Issue a plogi to the name server for scr 8772 * @phba: pointer to lpfc hba data structure. 8773 * @vport: pointer to a virtual N_Port data structure. 8774 * 8775 * This routine issues a Port Login (PLOGI) to the Name Server with 8776 * State Change Request (SCR) for a @vport. This routine will create an 8777 * ndlp for the Name Server associated to the @vport if such node does 8778 * not already exist. The PLOGI to Name Server is issued by invoking the 8779 * lpfc_issue_els_plogi() routine. If Fabric-Device Management Interface 8780 * (FDMI) is configured to the @vport, a FDMI node will be created and 8781 * the PLOGI to FDMI is issued by invoking lpfc_issue_els_plogi() routine. 8782 **/ 8783 void 8784 lpfc_do_scr_ns_plogi(struct lpfc_hba *phba, struct lpfc_vport *vport) 8785 { 8786 struct lpfc_nodelist *ndlp; 8787 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 8788 8789 /* 8790 * If lpfc_delay_discovery parameter is set and the clean address 8791 * bit is cleared and fc fabric parameters chenged, delay FC NPort 8792 * discovery. 8793 */ 8794 spin_lock_irq(shost->host_lock); 8795 if (vport->fc_flag & FC_DISC_DELAYED) { 8796 spin_unlock_irq(shost->host_lock); 8797 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY, 8798 "3334 Delay fc port discovery for %d seconds\n", 8799 phba->fc_ratov); 8800 mod_timer(&vport->delayed_disc_tmo, 8801 jiffies + msecs_to_jiffies(1000 * phba->fc_ratov)); 8802 return; 8803 } 8804 spin_unlock_irq(shost->host_lock); 8805 8806 ndlp = lpfc_findnode_did(vport, NameServer_DID); 8807 if (!ndlp) { 8808 ndlp = lpfc_nlp_init(vport, NameServer_DID); 8809 if (!ndlp) { 8810 if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) { 8811 lpfc_disc_start(vport); 8812 return; 8813 } 8814 lpfc_vport_set_state(vport, FC_VPORT_FAILED); 8815 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS, 8816 "0251 NameServer login: no memory\n"); 8817 return; 8818 } 8819 } else if (!NLP_CHK_NODE_ACT(ndlp)) { 8820 ndlp = lpfc_enable_node(vport, ndlp, NLP_STE_UNUSED_NODE); 8821 if (!ndlp) { 8822 if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) { 8823 lpfc_disc_start(vport); 8824 return; 8825 } 8826 lpfc_vport_set_state(vport, FC_VPORT_FAILED); 8827 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS, 8828 "0348 NameServer login: node freed\n"); 8829 return; 8830 } 8831 } 8832 ndlp->nlp_type |= NLP_FABRIC; 8833 8834 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE); 8835 8836 if (lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0)) { 8837 lpfc_vport_set_state(vport, FC_VPORT_FAILED); 8838 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS, 8839 "0252 Cannot issue NameServer login\n"); 8840 return; 8841 } 8842 8843 if ((phba->cfg_enable_SmartSAN || 8844 (phba->cfg_fdmi_on == LPFC_FDMI_SUPPORT)) && 8845 (vport->load_flag & FC_ALLOW_FDMI)) 8846 lpfc_start_fdmi(vport); 8847 } 8848 8849 /** 8850 * lpfc_cmpl_reg_new_vport - Completion callback function to register new vport 8851 * @phba: pointer to lpfc hba data structure. 8852 * @pmb: pointer to the driver internal queue element for mailbox command. 8853 * 8854 * This routine is the completion callback function to register new vport 8855 * mailbox command. If the new vport mailbox command completes successfully, 8856 * the fabric registration login shall be performed on physical port (the 8857 * new vport created is actually a physical port, with VPI 0) or the port 8858 * login to Name Server for State Change Request (SCR) will be performed 8859 * on virtual port (real virtual port, with VPI greater than 0). 8860 **/ 8861 static void 8862 lpfc_cmpl_reg_new_vport(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 8863 { 8864 struct lpfc_vport *vport = pmb->vport; 8865 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 8866 struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *)pmb->ctx_ndlp; 8867 MAILBOX_t *mb = &pmb->u.mb; 8868 int rc; 8869 8870 spin_lock_irq(shost->host_lock); 8871 vport->fc_flag &= ~FC_VPORT_NEEDS_REG_VPI; 8872 spin_unlock_irq(shost->host_lock); 8873 8874 if (mb->mbxStatus) { 8875 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX, 8876 "0915 Register VPI failed : Status: x%x" 8877 " upd bit: x%x \n", mb->mbxStatus, 8878 mb->un.varRegVpi.upd); 8879 if (phba->sli_rev == LPFC_SLI_REV4 && 8880 mb->un.varRegVpi.upd) 8881 goto mbox_err_exit ; 8882 8883 switch (mb->mbxStatus) { 8884 case 0x11: /* unsupported feature */ 8885 case 0x9603: /* max_vpi exceeded */ 8886 case 0x9602: /* Link event since CLEAR_LA */ 8887 /* giving up on vport registration */ 8888 lpfc_vport_set_state(vport, FC_VPORT_FAILED); 8889 spin_lock_irq(shost->host_lock); 8890 vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP); 8891 spin_unlock_irq(shost->host_lock); 8892 lpfc_can_disctmo(vport); 8893 break; 8894 /* If reg_vpi fail with invalid VPI status, re-init VPI */ 8895 case 0x20: 8896 spin_lock_irq(shost->host_lock); 8897 vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI; 8898 spin_unlock_irq(shost->host_lock); 8899 lpfc_init_vpi(phba, pmb, vport->vpi); 8900 pmb->vport = vport; 8901 pmb->mbox_cmpl = lpfc_init_vpi_cmpl; 8902 rc = lpfc_sli_issue_mbox(phba, pmb, 8903 MBX_NOWAIT); 8904 if (rc == MBX_NOT_FINISHED) { 8905 lpfc_printf_vlog(vport, 8906 KERN_ERR, LOG_MBOX, 8907 "2732 Failed to issue INIT_VPI" 8908 " mailbox command\n"); 8909 } else { 8910 lpfc_nlp_put(ndlp); 8911 return; 8912 } 8913 /* fall through */ 8914 default: 8915 /* Try to recover from this error */ 8916 if (phba->sli_rev == LPFC_SLI_REV4) 8917 lpfc_sli4_unreg_all_rpis(vport); 8918 lpfc_mbx_unreg_vpi(vport); 8919 spin_lock_irq(shost->host_lock); 8920 vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI; 8921 spin_unlock_irq(shost->host_lock); 8922 if (mb->mbxStatus == MBX_NOT_FINISHED) 8923 break; 8924 if ((vport->port_type == LPFC_PHYSICAL_PORT) && 8925 !(vport->fc_flag & FC_LOGO_RCVD_DID_CHNG)) { 8926 if (phba->sli_rev == LPFC_SLI_REV4) 8927 lpfc_issue_init_vfi(vport); 8928 else 8929 lpfc_initial_flogi(vport); 8930 } else { 8931 lpfc_initial_fdisc(vport); 8932 } 8933 break; 8934 } 8935 } else { 8936 spin_lock_irq(shost->host_lock); 8937 vport->vpi_state |= LPFC_VPI_REGISTERED; 8938 spin_unlock_irq(shost->host_lock); 8939 if (vport == phba->pport) { 8940 if (phba->sli_rev < LPFC_SLI_REV4) 8941 lpfc_issue_fabric_reglogin(vport); 8942 else { 8943 /* 8944 * If the physical port is instantiated using 8945 * FDISC, do not start vport discovery. 8946 */ 8947 if (vport->port_state != LPFC_FDISC) 8948 lpfc_start_fdiscs(phba); 8949 lpfc_do_scr_ns_plogi(phba, vport); 8950 } 8951 } else 8952 lpfc_do_scr_ns_plogi(phba, vport); 8953 } 8954 mbox_err_exit: 8955 /* Now, we decrement the ndlp reference count held for this 8956 * callback function 8957 */ 8958 lpfc_nlp_put(ndlp); 8959 8960 mempool_free(pmb, phba->mbox_mem_pool); 8961 return; 8962 } 8963 8964 /** 8965 * lpfc_register_new_vport - Register a new vport with a HBA 8966 * @phba: pointer to lpfc hba data structure. 8967 * @vport: pointer to a host virtual N_Port data structure. 8968 * @ndlp: pointer to a node-list data structure. 8969 * 8970 * This routine registers the @vport as a new virtual port with a HBA. 8971 * It is done through a registering vpi mailbox command. 8972 **/ 8973 void 8974 lpfc_register_new_vport(struct lpfc_hba *phba, struct lpfc_vport *vport, 8975 struct lpfc_nodelist *ndlp) 8976 { 8977 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 8978 LPFC_MBOXQ_t *mbox; 8979 8980 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 8981 if (mbox) { 8982 lpfc_reg_vpi(vport, mbox); 8983 mbox->vport = vport; 8984 mbox->ctx_ndlp = lpfc_nlp_get(ndlp); 8985 mbox->mbox_cmpl = lpfc_cmpl_reg_new_vport; 8986 if (lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT) 8987 == MBX_NOT_FINISHED) { 8988 /* mailbox command not success, decrement ndlp 8989 * reference count for this command 8990 */ 8991 lpfc_nlp_put(ndlp); 8992 mempool_free(mbox, phba->mbox_mem_pool); 8993 8994 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX, 8995 "0253 Register VPI: Can't send mbox\n"); 8996 goto mbox_err_exit; 8997 } 8998 } else { 8999 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX, 9000 "0254 Register VPI: no memory\n"); 9001 goto mbox_err_exit; 9002 } 9003 return; 9004 9005 mbox_err_exit: 9006 lpfc_vport_set_state(vport, FC_VPORT_FAILED); 9007 spin_lock_irq(shost->host_lock); 9008 vport->fc_flag &= ~FC_VPORT_NEEDS_REG_VPI; 9009 spin_unlock_irq(shost->host_lock); 9010 return; 9011 } 9012 9013 /** 9014 * lpfc_cancel_all_vport_retry_delay_timer - Cancel all vport retry delay timer 9015 * @phba: pointer to lpfc hba data structure. 9016 * 9017 * This routine cancels the retry delay timers to all the vports. 9018 **/ 9019 void 9020 lpfc_cancel_all_vport_retry_delay_timer(struct lpfc_hba *phba) 9021 { 9022 struct lpfc_vport **vports; 9023 struct lpfc_nodelist *ndlp; 9024 uint32_t link_state; 9025 int i; 9026 9027 /* Treat this failure as linkdown for all vports */ 9028 link_state = phba->link_state; 9029 lpfc_linkdown(phba); 9030 phba->link_state = link_state; 9031 9032 vports = lpfc_create_vport_work_array(phba); 9033 9034 if (vports) { 9035 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) { 9036 ndlp = lpfc_findnode_did(vports[i], Fabric_DID); 9037 if (ndlp) 9038 lpfc_cancel_retry_delay_tmo(vports[i], ndlp); 9039 lpfc_els_flush_cmd(vports[i]); 9040 } 9041 lpfc_destroy_vport_work_array(phba, vports); 9042 } 9043 } 9044 9045 /** 9046 * lpfc_retry_pport_discovery - Start timer to retry FLOGI. 9047 * @phba: pointer to lpfc hba data structure. 9048 * 9049 * This routine abort all pending discovery commands and 9050 * start a timer to retry FLOGI for the physical port 9051 * discovery. 9052 **/ 9053 void 9054 lpfc_retry_pport_discovery(struct lpfc_hba *phba) 9055 { 9056 struct lpfc_nodelist *ndlp; 9057 struct Scsi_Host *shost; 9058 9059 /* Cancel the all vports retry delay retry timers */ 9060 lpfc_cancel_all_vport_retry_delay_timer(phba); 9061 9062 /* If fabric require FLOGI, then re-instantiate physical login */ 9063 ndlp = lpfc_findnode_did(phba->pport, Fabric_DID); 9064 if (!ndlp) 9065 return; 9066 9067 shost = lpfc_shost_from_vport(phba->pport); 9068 mod_timer(&ndlp->nlp_delayfunc, jiffies + msecs_to_jiffies(1000)); 9069 spin_lock_irq(shost->host_lock); 9070 ndlp->nlp_flag |= NLP_DELAY_TMO; 9071 spin_unlock_irq(shost->host_lock); 9072 ndlp->nlp_last_elscmd = ELS_CMD_FLOGI; 9073 phba->pport->port_state = LPFC_FLOGI; 9074 return; 9075 } 9076 9077 /** 9078 * lpfc_fabric_login_reqd - Check if FLOGI required. 9079 * @phba: pointer to lpfc hba data structure. 9080 * @cmdiocb: pointer to FDISC command iocb. 9081 * @rspiocb: pointer to FDISC response iocb. 9082 * 9083 * This routine checks if a FLOGI is reguired for FDISC 9084 * to succeed. 9085 **/ 9086 static int 9087 lpfc_fabric_login_reqd(struct lpfc_hba *phba, 9088 struct lpfc_iocbq *cmdiocb, 9089 struct lpfc_iocbq *rspiocb) 9090 { 9091 9092 if ((rspiocb->iocb.ulpStatus != IOSTAT_FABRIC_RJT) || 9093 (rspiocb->iocb.un.ulpWord[4] != RJT_LOGIN_REQUIRED)) 9094 return 0; 9095 else 9096 return 1; 9097 } 9098 9099 /** 9100 * lpfc_cmpl_els_fdisc - Completion function for fdisc iocb command 9101 * @phba: pointer to lpfc hba data structure. 9102 * @cmdiocb: pointer to lpfc command iocb data structure. 9103 * @rspiocb: pointer to lpfc response iocb data structure. 9104 * 9105 * This routine is the completion callback function to a Fabric Discover 9106 * (FDISC) ELS command. Since all the FDISC ELS commands are issued 9107 * single threaded, each FDISC completion callback function will reset 9108 * the discovery timer for all vports such that the timers will not get 9109 * unnecessary timeout. The function checks the FDISC IOCB status. If error 9110 * detected, the vport will be set to FC_VPORT_FAILED state. Otherwise,the 9111 * vport will set to FC_VPORT_ACTIVE state. It then checks whether the DID 9112 * assigned to the vport has been changed with the completion of the FDISC 9113 * command. If so, both RPI (Remote Port Index) and VPI (Virtual Port Index) 9114 * are unregistered from the HBA, and then the lpfc_register_new_vport() 9115 * routine is invoked to register new vport with the HBA. Otherwise, the 9116 * lpfc_do_scr_ns_plogi() routine is invoked to issue a PLOGI to the Name 9117 * Server for State Change Request (SCR). 9118 **/ 9119 static void 9120 lpfc_cmpl_els_fdisc(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb, 9121 struct lpfc_iocbq *rspiocb) 9122 { 9123 struct lpfc_vport *vport = cmdiocb->vport; 9124 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 9125 struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) cmdiocb->context1; 9126 struct lpfc_nodelist *np; 9127 struct lpfc_nodelist *next_np; 9128 IOCB_t *irsp = &rspiocb->iocb; 9129 struct lpfc_iocbq *piocb; 9130 struct lpfc_dmabuf *pcmd = cmdiocb->context2, *prsp; 9131 struct serv_parm *sp; 9132 uint8_t fabric_param_changed; 9133 9134 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, 9135 "0123 FDISC completes. x%x/x%x prevDID: x%x\n", 9136 irsp->ulpStatus, irsp->un.ulpWord[4], 9137 vport->fc_prevDID); 9138 /* Since all FDISCs are being single threaded, we 9139 * must reset the discovery timer for ALL vports 9140 * waiting to send FDISC when one completes. 9141 */ 9142 list_for_each_entry(piocb, &phba->fabric_iocb_list, list) { 9143 lpfc_set_disctmo(piocb->vport); 9144 } 9145 9146 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, 9147 "FDISC cmpl: status:x%x/x%x prevdid:x%x", 9148 irsp->ulpStatus, irsp->un.ulpWord[4], vport->fc_prevDID); 9149 9150 if (irsp->ulpStatus) { 9151 9152 if (lpfc_fabric_login_reqd(phba, cmdiocb, rspiocb)) { 9153 lpfc_retry_pport_discovery(phba); 9154 goto out; 9155 } 9156 9157 /* Check for retry */ 9158 if (lpfc_els_retry(phba, cmdiocb, rspiocb)) 9159 goto out; 9160 /* FDISC failed */ 9161 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS, 9162 "0126 FDISC failed. (x%x/x%x)\n", 9163 irsp->ulpStatus, irsp->un.ulpWord[4]); 9164 goto fdisc_failed; 9165 } 9166 spin_lock_irq(shost->host_lock); 9167 vport->fc_flag &= ~FC_VPORT_CVL_RCVD; 9168 vport->fc_flag &= ~FC_VPORT_LOGO_RCVD; 9169 vport->fc_flag |= FC_FABRIC; 9170 if (vport->phba->fc_topology == LPFC_TOPOLOGY_LOOP) 9171 vport->fc_flag |= FC_PUBLIC_LOOP; 9172 spin_unlock_irq(shost->host_lock); 9173 9174 vport->fc_myDID = irsp->un.ulpWord[4] & Mask_DID; 9175 lpfc_vport_set_state(vport, FC_VPORT_ACTIVE); 9176 prsp = list_get_first(&pcmd->list, struct lpfc_dmabuf, list); 9177 if (!prsp) 9178 goto out; 9179 sp = prsp->virt + sizeof(uint32_t); 9180 fabric_param_changed = lpfc_check_clean_addr_bit(vport, sp); 9181 memcpy(&vport->fabric_portname, &sp->portName, 9182 sizeof(struct lpfc_name)); 9183 memcpy(&vport->fabric_nodename, &sp->nodeName, 9184 sizeof(struct lpfc_name)); 9185 if (fabric_param_changed && 9186 !(vport->fc_flag & FC_VPORT_NEEDS_REG_VPI)) { 9187 /* If our NportID changed, we need to ensure all 9188 * remaining NPORTs get unreg_login'ed so we can 9189 * issue unreg_vpi. 9190 */ 9191 list_for_each_entry_safe(np, next_np, 9192 &vport->fc_nodes, nlp_listp) { 9193 if (!NLP_CHK_NODE_ACT(ndlp) || 9194 (np->nlp_state != NLP_STE_NPR_NODE) || 9195 !(np->nlp_flag & NLP_NPR_ADISC)) 9196 continue; 9197 spin_lock_irq(shost->host_lock); 9198 np->nlp_flag &= ~NLP_NPR_ADISC; 9199 spin_unlock_irq(shost->host_lock); 9200 lpfc_unreg_rpi(vport, np); 9201 } 9202 lpfc_cleanup_pending_mbox(vport); 9203 9204 if (phba->sli_rev == LPFC_SLI_REV4) 9205 lpfc_sli4_unreg_all_rpis(vport); 9206 9207 lpfc_mbx_unreg_vpi(vport); 9208 spin_lock_irq(shost->host_lock); 9209 vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI; 9210 if (phba->sli_rev == LPFC_SLI_REV4) 9211 vport->fc_flag |= FC_VPORT_NEEDS_INIT_VPI; 9212 else 9213 vport->fc_flag |= FC_LOGO_RCVD_DID_CHNG; 9214 spin_unlock_irq(shost->host_lock); 9215 } else if ((phba->sli_rev == LPFC_SLI_REV4) && 9216 !(vport->fc_flag & FC_VPORT_NEEDS_REG_VPI)) { 9217 /* 9218 * Driver needs to re-reg VPI in order for f/w 9219 * to update the MAC address. 9220 */ 9221 lpfc_register_new_vport(phba, vport, ndlp); 9222 goto out; 9223 } 9224 9225 if (vport->fc_flag & FC_VPORT_NEEDS_INIT_VPI) 9226 lpfc_issue_init_vpi(vport); 9227 else if (vport->fc_flag & FC_VPORT_NEEDS_REG_VPI) 9228 lpfc_register_new_vport(phba, vport, ndlp); 9229 else 9230 lpfc_do_scr_ns_plogi(phba, vport); 9231 goto out; 9232 fdisc_failed: 9233 if (vport->fc_vport && 9234 (vport->fc_vport->vport_state != FC_VPORT_NO_FABRIC_RSCS)) 9235 lpfc_vport_set_state(vport, FC_VPORT_FAILED); 9236 /* Cancel discovery timer */ 9237 lpfc_can_disctmo(vport); 9238 lpfc_nlp_put(ndlp); 9239 out: 9240 lpfc_els_free_iocb(phba, cmdiocb); 9241 } 9242 9243 /** 9244 * lpfc_issue_els_fdisc - Issue a fdisc iocb command 9245 * @vport: pointer to a virtual N_Port data structure. 9246 * @ndlp: pointer to a node-list data structure. 9247 * @retry: number of retries to the command IOCB. 9248 * 9249 * This routine prepares and issues a Fabric Discover (FDISC) IOCB to 9250 * a remote node (@ndlp) off a @vport. It uses the lpfc_issue_fabric_iocb() 9251 * routine to issue the IOCB, which makes sure only one outstanding fabric 9252 * IOCB will be sent off HBA at any given time. 9253 * 9254 * Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp 9255 * will be incremented by 1 for holding the ndlp and the reference to ndlp 9256 * will be stored into the context1 field of the IOCB for the completion 9257 * callback function to the FDISC ELS command. 9258 * 9259 * Return code 9260 * 0 - Successfully issued fdisc iocb command 9261 * 1 - Failed to issue fdisc iocb command 9262 **/ 9263 static int 9264 lpfc_issue_els_fdisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 9265 uint8_t retry) 9266 { 9267 struct lpfc_hba *phba = vport->phba; 9268 IOCB_t *icmd; 9269 struct lpfc_iocbq *elsiocb; 9270 struct serv_parm *sp; 9271 uint8_t *pcmd; 9272 uint16_t cmdsize; 9273 int did = ndlp->nlp_DID; 9274 int rc; 9275 9276 vport->port_state = LPFC_FDISC; 9277 vport->fc_myDID = 0; 9278 cmdsize = (sizeof(uint32_t) + sizeof(struct serv_parm)); 9279 elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp, did, 9280 ELS_CMD_FDISC); 9281 if (!elsiocb) { 9282 lpfc_vport_set_state(vport, FC_VPORT_FAILED); 9283 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS, 9284 "0255 Issue FDISC: no IOCB\n"); 9285 return 1; 9286 } 9287 9288 icmd = &elsiocb->iocb; 9289 icmd->un.elsreq64.myID = 0; 9290 icmd->un.elsreq64.fl = 1; 9291 9292 /* 9293 * SLI3 ports require a different context type value than SLI4. 9294 * Catch SLI3 ports here and override the prep. 9295 */ 9296 if (phba->sli_rev == LPFC_SLI_REV3) { 9297 icmd->ulpCt_h = 1; 9298 icmd->ulpCt_l = 0; 9299 } 9300 9301 pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt); 9302 *((uint32_t *) (pcmd)) = ELS_CMD_FDISC; 9303 pcmd += sizeof(uint32_t); /* CSP Word 1 */ 9304 memcpy(pcmd, &vport->phba->pport->fc_sparam, sizeof(struct serv_parm)); 9305 sp = (struct serv_parm *) pcmd; 9306 /* Setup CSPs accordingly for Fabric */ 9307 sp->cmn.e_d_tov = 0; 9308 sp->cmn.w2.r_a_tov = 0; 9309 sp->cmn.virtual_fabric_support = 0; 9310 sp->cls1.classValid = 0; 9311 sp->cls2.seqDelivery = 1; 9312 sp->cls3.seqDelivery = 1; 9313 9314 pcmd += sizeof(uint32_t); /* CSP Word 2 */ 9315 pcmd += sizeof(uint32_t); /* CSP Word 3 */ 9316 pcmd += sizeof(uint32_t); /* CSP Word 4 */ 9317 pcmd += sizeof(uint32_t); /* Port Name */ 9318 memcpy(pcmd, &vport->fc_portname, 8); 9319 pcmd += sizeof(uint32_t); /* Node Name */ 9320 pcmd += sizeof(uint32_t); /* Node Name */ 9321 memcpy(pcmd, &vport->fc_nodename, 8); 9322 sp->cmn.valid_vendor_ver_level = 0; 9323 memset(sp->un.vendorVersion, 0, sizeof(sp->un.vendorVersion)); 9324 lpfc_set_disctmo(vport); 9325 9326 phba->fc_stat.elsXmitFDISC++; 9327 elsiocb->iocb_cmpl = lpfc_cmpl_els_fdisc; 9328 9329 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, 9330 "Issue FDISC: did:x%x", 9331 did, 0, 0); 9332 9333 rc = lpfc_issue_fabric_iocb(phba, elsiocb); 9334 if (rc == IOCB_ERROR) { 9335 lpfc_els_free_iocb(phba, elsiocb); 9336 lpfc_vport_set_state(vport, FC_VPORT_FAILED); 9337 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS, 9338 "0256 Issue FDISC: Cannot send IOCB\n"); 9339 return 1; 9340 } 9341 lpfc_vport_set_state(vport, FC_VPORT_INITIALIZING); 9342 return 0; 9343 } 9344 9345 /** 9346 * lpfc_cmpl_els_npiv_logo - Completion function with vport logo 9347 * @phba: pointer to lpfc hba data structure. 9348 * @cmdiocb: pointer to lpfc command iocb data structure. 9349 * @rspiocb: pointer to lpfc response iocb data structure. 9350 * 9351 * This routine is the completion callback function to the issuing of a LOGO 9352 * ELS command off a vport. It frees the command IOCB and then decrement the 9353 * reference count held on ndlp for this completion function, indicating that 9354 * the reference to the ndlp is no long needed. Note that the 9355 * lpfc_els_free_iocb() routine decrements the ndlp reference held for this 9356 * callback function and an additional explicit ndlp reference decrementation 9357 * will trigger the actual release of the ndlp. 9358 **/ 9359 static void 9360 lpfc_cmpl_els_npiv_logo(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb, 9361 struct lpfc_iocbq *rspiocb) 9362 { 9363 struct lpfc_vport *vport = cmdiocb->vport; 9364 IOCB_t *irsp; 9365 struct lpfc_nodelist *ndlp; 9366 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 9367 9368 ndlp = (struct lpfc_nodelist *)cmdiocb->context1; 9369 irsp = &rspiocb->iocb; 9370 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, 9371 "LOGO npiv cmpl: status:x%x/x%x did:x%x", 9372 irsp->ulpStatus, irsp->un.ulpWord[4], irsp->un.rcvels.remoteID); 9373 9374 lpfc_els_free_iocb(phba, cmdiocb); 9375 vport->unreg_vpi_cmpl = VPORT_ERROR; 9376 9377 /* Trigger the release of the ndlp after logo */ 9378 lpfc_nlp_put(ndlp); 9379 9380 /* NPIV LOGO completes to NPort <nlp_DID> */ 9381 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, 9382 "2928 NPIV LOGO completes to NPort x%x " 9383 "Data: x%x x%x x%x x%x\n", 9384 ndlp->nlp_DID, irsp->ulpStatus, irsp->un.ulpWord[4], 9385 irsp->ulpTimeout, vport->num_disc_nodes); 9386 9387 if (irsp->ulpStatus == IOSTAT_SUCCESS) { 9388 spin_lock_irq(shost->host_lock); 9389 vport->fc_flag &= ~FC_NDISC_ACTIVE; 9390 vport->fc_flag &= ~FC_FABRIC; 9391 spin_unlock_irq(shost->host_lock); 9392 lpfc_can_disctmo(vport); 9393 } 9394 } 9395 9396 /** 9397 * lpfc_issue_els_npiv_logo - Issue a logo off a vport 9398 * @vport: pointer to a virtual N_Port data structure. 9399 * @ndlp: pointer to a node-list data structure. 9400 * 9401 * This routine issues a LOGO ELS command to an @ndlp off a @vport. 9402 * 9403 * Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp 9404 * will be incremented by 1 for holding the ndlp and the reference to ndlp 9405 * will be stored into the context1 field of the IOCB for the completion 9406 * callback function to the LOGO ELS command. 9407 * 9408 * Return codes 9409 * 0 - Successfully issued logo off the @vport 9410 * 1 - Failed to issue logo off the @vport 9411 **/ 9412 int 9413 lpfc_issue_els_npiv_logo(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) 9414 { 9415 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 9416 struct lpfc_hba *phba = vport->phba; 9417 struct lpfc_iocbq *elsiocb; 9418 uint8_t *pcmd; 9419 uint16_t cmdsize; 9420 9421 cmdsize = 2 * sizeof(uint32_t) + sizeof(struct lpfc_name); 9422 elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, 0, ndlp, ndlp->nlp_DID, 9423 ELS_CMD_LOGO); 9424 if (!elsiocb) 9425 return 1; 9426 9427 pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt); 9428 *((uint32_t *) (pcmd)) = ELS_CMD_LOGO; 9429 pcmd += sizeof(uint32_t); 9430 9431 /* Fill in LOGO payload */ 9432 *((uint32_t *) (pcmd)) = be32_to_cpu(vport->fc_myDID); 9433 pcmd += sizeof(uint32_t); 9434 memcpy(pcmd, &vport->fc_portname, sizeof(struct lpfc_name)); 9435 9436 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, 9437 "Issue LOGO npiv did:x%x flg:x%x", 9438 ndlp->nlp_DID, ndlp->nlp_flag, 0); 9439 9440 elsiocb->iocb_cmpl = lpfc_cmpl_els_npiv_logo; 9441 spin_lock_irq(shost->host_lock); 9442 ndlp->nlp_flag |= NLP_LOGO_SND; 9443 spin_unlock_irq(shost->host_lock); 9444 if (lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0) == 9445 IOCB_ERROR) { 9446 spin_lock_irq(shost->host_lock); 9447 ndlp->nlp_flag &= ~NLP_LOGO_SND; 9448 spin_unlock_irq(shost->host_lock); 9449 lpfc_els_free_iocb(phba, elsiocb); 9450 return 1; 9451 } 9452 return 0; 9453 } 9454 9455 /** 9456 * lpfc_fabric_block_timeout - Handler function to the fabric block timer 9457 * @ptr: holder for the timer function associated data. 9458 * 9459 * This routine is invoked by the fabric iocb block timer after 9460 * timeout. It posts the fabric iocb block timeout event by setting the 9461 * WORKER_FABRIC_BLOCK_TMO bit to work port event bitmap and then invokes 9462 * lpfc_worker_wake_up() routine to wake up the worker thread. It is for 9463 * the worker thread to invoke the lpfc_unblock_fabric_iocbs() on the 9464 * posted event WORKER_FABRIC_BLOCK_TMO. 9465 **/ 9466 void 9467 lpfc_fabric_block_timeout(struct timer_list *t) 9468 { 9469 struct lpfc_hba *phba = from_timer(phba, t, fabric_block_timer); 9470 unsigned long iflags; 9471 uint32_t tmo_posted; 9472 9473 spin_lock_irqsave(&phba->pport->work_port_lock, iflags); 9474 tmo_posted = phba->pport->work_port_events & WORKER_FABRIC_BLOCK_TMO; 9475 if (!tmo_posted) 9476 phba->pport->work_port_events |= WORKER_FABRIC_BLOCK_TMO; 9477 spin_unlock_irqrestore(&phba->pport->work_port_lock, iflags); 9478 9479 if (!tmo_posted) 9480 lpfc_worker_wake_up(phba); 9481 return; 9482 } 9483 9484 /** 9485 * lpfc_resume_fabric_iocbs - Issue a fabric iocb from driver internal list 9486 * @phba: pointer to lpfc hba data structure. 9487 * 9488 * This routine issues one fabric iocb from the driver internal list to 9489 * the HBA. It first checks whether it's ready to issue one fabric iocb to 9490 * the HBA (whether there is no outstanding fabric iocb). If so, it shall 9491 * remove one pending fabric iocb from the driver internal list and invokes 9492 * lpfc_sli_issue_iocb() routine to send the fabric iocb to the HBA. 9493 **/ 9494 static void 9495 lpfc_resume_fabric_iocbs(struct lpfc_hba *phba) 9496 { 9497 struct lpfc_iocbq *iocb; 9498 unsigned long iflags; 9499 int ret; 9500 IOCB_t *cmd; 9501 9502 repeat: 9503 iocb = NULL; 9504 spin_lock_irqsave(&phba->hbalock, iflags); 9505 /* Post any pending iocb to the SLI layer */ 9506 if (atomic_read(&phba->fabric_iocb_count) == 0) { 9507 list_remove_head(&phba->fabric_iocb_list, iocb, typeof(*iocb), 9508 list); 9509 if (iocb) 9510 /* Increment fabric iocb count to hold the position */ 9511 atomic_inc(&phba->fabric_iocb_count); 9512 } 9513 spin_unlock_irqrestore(&phba->hbalock, iflags); 9514 if (iocb) { 9515 iocb->fabric_iocb_cmpl = iocb->iocb_cmpl; 9516 iocb->iocb_cmpl = lpfc_cmpl_fabric_iocb; 9517 iocb->iocb_flag |= LPFC_IO_FABRIC; 9518 9519 lpfc_debugfs_disc_trc(iocb->vport, LPFC_DISC_TRC_ELS_CMD, 9520 "Fabric sched1: ste:x%x", 9521 iocb->vport->port_state, 0, 0); 9522 9523 ret = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, iocb, 0); 9524 9525 if (ret == IOCB_ERROR) { 9526 iocb->iocb_cmpl = iocb->fabric_iocb_cmpl; 9527 iocb->fabric_iocb_cmpl = NULL; 9528 iocb->iocb_flag &= ~LPFC_IO_FABRIC; 9529 cmd = &iocb->iocb; 9530 cmd->ulpStatus = IOSTAT_LOCAL_REJECT; 9531 cmd->un.ulpWord[4] = IOERR_SLI_ABORTED; 9532 iocb->iocb_cmpl(phba, iocb, iocb); 9533 9534 atomic_dec(&phba->fabric_iocb_count); 9535 goto repeat; 9536 } 9537 } 9538 9539 return; 9540 } 9541 9542 /** 9543 * lpfc_unblock_fabric_iocbs - Unblock issuing fabric iocb command 9544 * @phba: pointer to lpfc hba data structure. 9545 * 9546 * This routine unblocks the issuing fabric iocb command. The function 9547 * will clear the fabric iocb block bit and then invoke the routine 9548 * lpfc_resume_fabric_iocbs() to issue one of the pending fabric iocb 9549 * from the driver internal fabric iocb list. 9550 **/ 9551 void 9552 lpfc_unblock_fabric_iocbs(struct lpfc_hba *phba) 9553 { 9554 clear_bit(FABRIC_COMANDS_BLOCKED, &phba->bit_flags); 9555 9556 lpfc_resume_fabric_iocbs(phba); 9557 return; 9558 } 9559 9560 /** 9561 * lpfc_block_fabric_iocbs - Block issuing fabric iocb command 9562 * @phba: pointer to lpfc hba data structure. 9563 * 9564 * This routine blocks the issuing fabric iocb for a specified amount of 9565 * time (currently 100 ms). This is done by set the fabric iocb block bit 9566 * and set up a timeout timer for 100ms. When the block bit is set, no more 9567 * fabric iocb will be issued out of the HBA. 9568 **/ 9569 static void 9570 lpfc_block_fabric_iocbs(struct lpfc_hba *phba) 9571 { 9572 int blocked; 9573 9574 blocked = test_and_set_bit(FABRIC_COMANDS_BLOCKED, &phba->bit_flags); 9575 /* Start a timer to unblock fabric iocbs after 100ms */ 9576 if (!blocked) 9577 mod_timer(&phba->fabric_block_timer, 9578 jiffies + msecs_to_jiffies(100)); 9579 9580 return; 9581 } 9582 9583 /** 9584 * lpfc_cmpl_fabric_iocb - Completion callback function for fabric iocb 9585 * @phba: pointer to lpfc hba data structure. 9586 * @cmdiocb: pointer to lpfc command iocb data structure. 9587 * @rspiocb: pointer to lpfc response iocb data structure. 9588 * 9589 * This routine is the callback function that is put to the fabric iocb's 9590 * callback function pointer (iocb->iocb_cmpl). The original iocb's callback 9591 * function pointer has been stored in iocb->fabric_iocb_cmpl. This callback 9592 * function first restores and invokes the original iocb's callback function 9593 * and then invokes the lpfc_resume_fabric_iocbs() routine to issue the next 9594 * fabric bound iocb from the driver internal fabric iocb list onto the wire. 9595 **/ 9596 static void 9597 lpfc_cmpl_fabric_iocb(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb, 9598 struct lpfc_iocbq *rspiocb) 9599 { 9600 struct ls_rjt stat; 9601 9602 BUG_ON((cmdiocb->iocb_flag & LPFC_IO_FABRIC) != LPFC_IO_FABRIC); 9603 9604 switch (rspiocb->iocb.ulpStatus) { 9605 case IOSTAT_NPORT_RJT: 9606 case IOSTAT_FABRIC_RJT: 9607 if (rspiocb->iocb.un.ulpWord[4] & RJT_UNAVAIL_TEMP) { 9608 lpfc_block_fabric_iocbs(phba); 9609 } 9610 break; 9611 9612 case IOSTAT_NPORT_BSY: 9613 case IOSTAT_FABRIC_BSY: 9614 lpfc_block_fabric_iocbs(phba); 9615 break; 9616 9617 case IOSTAT_LS_RJT: 9618 stat.un.lsRjtError = 9619 be32_to_cpu(rspiocb->iocb.un.ulpWord[4]); 9620 if ((stat.un.b.lsRjtRsnCode == LSRJT_UNABLE_TPC) || 9621 (stat.un.b.lsRjtRsnCode == LSRJT_LOGICAL_BSY)) 9622 lpfc_block_fabric_iocbs(phba); 9623 break; 9624 } 9625 9626 BUG_ON(atomic_read(&phba->fabric_iocb_count) == 0); 9627 9628 cmdiocb->iocb_cmpl = cmdiocb->fabric_iocb_cmpl; 9629 cmdiocb->fabric_iocb_cmpl = NULL; 9630 cmdiocb->iocb_flag &= ~LPFC_IO_FABRIC; 9631 cmdiocb->iocb_cmpl(phba, cmdiocb, rspiocb); 9632 9633 atomic_dec(&phba->fabric_iocb_count); 9634 if (!test_bit(FABRIC_COMANDS_BLOCKED, &phba->bit_flags)) { 9635 /* Post any pending iocbs to HBA */ 9636 lpfc_resume_fabric_iocbs(phba); 9637 } 9638 } 9639 9640 /** 9641 * lpfc_issue_fabric_iocb - Issue a fabric iocb command 9642 * @phba: pointer to lpfc hba data structure. 9643 * @iocb: pointer to lpfc command iocb data structure. 9644 * 9645 * This routine is used as the top-level API for issuing a fabric iocb command 9646 * such as FLOGI and FDISC. To accommodate certain switch fabric, this driver 9647 * function makes sure that only one fabric bound iocb will be outstanding at 9648 * any given time. As such, this function will first check to see whether there 9649 * is already an outstanding fabric iocb on the wire. If so, it will put the 9650 * newly issued iocb onto the driver internal fabric iocb list, waiting to be 9651 * issued later. Otherwise, it will issue the iocb on the wire and update the 9652 * fabric iocb count it indicate that there is one fabric iocb on the wire. 9653 * 9654 * Note, this implementation has a potential sending out fabric IOCBs out of 9655 * order. The problem is caused by the construction of the "ready" boolen does 9656 * not include the condition that the internal fabric IOCB list is empty. As 9657 * such, it is possible a fabric IOCB issued by this routine might be "jump" 9658 * ahead of the fabric IOCBs in the internal list. 9659 * 9660 * Return code 9661 * IOCB_SUCCESS - either fabric iocb put on the list or issued successfully 9662 * IOCB_ERROR - failed to issue fabric iocb 9663 **/ 9664 static int 9665 lpfc_issue_fabric_iocb(struct lpfc_hba *phba, struct lpfc_iocbq *iocb) 9666 { 9667 unsigned long iflags; 9668 int ready; 9669 int ret; 9670 9671 BUG_ON(atomic_read(&phba->fabric_iocb_count) > 1); 9672 9673 spin_lock_irqsave(&phba->hbalock, iflags); 9674 ready = atomic_read(&phba->fabric_iocb_count) == 0 && 9675 !test_bit(FABRIC_COMANDS_BLOCKED, &phba->bit_flags); 9676 9677 if (ready) 9678 /* Increment fabric iocb count to hold the position */ 9679 atomic_inc(&phba->fabric_iocb_count); 9680 spin_unlock_irqrestore(&phba->hbalock, iflags); 9681 if (ready) { 9682 iocb->fabric_iocb_cmpl = iocb->iocb_cmpl; 9683 iocb->iocb_cmpl = lpfc_cmpl_fabric_iocb; 9684 iocb->iocb_flag |= LPFC_IO_FABRIC; 9685 9686 lpfc_debugfs_disc_trc(iocb->vport, LPFC_DISC_TRC_ELS_CMD, 9687 "Fabric sched2: ste:x%x", 9688 iocb->vport->port_state, 0, 0); 9689 9690 ret = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, iocb, 0); 9691 9692 if (ret == IOCB_ERROR) { 9693 iocb->iocb_cmpl = iocb->fabric_iocb_cmpl; 9694 iocb->fabric_iocb_cmpl = NULL; 9695 iocb->iocb_flag &= ~LPFC_IO_FABRIC; 9696 atomic_dec(&phba->fabric_iocb_count); 9697 } 9698 } else { 9699 spin_lock_irqsave(&phba->hbalock, iflags); 9700 list_add_tail(&iocb->list, &phba->fabric_iocb_list); 9701 spin_unlock_irqrestore(&phba->hbalock, iflags); 9702 ret = IOCB_SUCCESS; 9703 } 9704 return ret; 9705 } 9706 9707 /** 9708 * lpfc_fabric_abort_vport - Abort a vport's iocbs from driver fabric iocb list 9709 * @vport: pointer to a virtual N_Port data structure. 9710 * 9711 * This routine aborts all the IOCBs associated with a @vport from the 9712 * driver internal fabric IOCB list. The list contains fabric IOCBs to be 9713 * issued to the ELS IOCB ring. This abort function walks the fabric IOCB 9714 * list, removes each IOCB associated with the @vport off the list, set the 9715 * status feild to IOSTAT_LOCAL_REJECT, and invokes the callback function 9716 * associated with the IOCB. 9717 **/ 9718 static void lpfc_fabric_abort_vport(struct lpfc_vport *vport) 9719 { 9720 LIST_HEAD(completions); 9721 struct lpfc_hba *phba = vport->phba; 9722 struct lpfc_iocbq *tmp_iocb, *piocb; 9723 9724 spin_lock_irq(&phba->hbalock); 9725 list_for_each_entry_safe(piocb, tmp_iocb, &phba->fabric_iocb_list, 9726 list) { 9727 9728 if (piocb->vport != vport) 9729 continue; 9730 9731 list_move_tail(&piocb->list, &completions); 9732 } 9733 spin_unlock_irq(&phba->hbalock); 9734 9735 /* Cancel all the IOCBs from the completions list */ 9736 lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT, 9737 IOERR_SLI_ABORTED); 9738 } 9739 9740 /** 9741 * lpfc_fabric_abort_nport - Abort a ndlp's iocbs from driver fabric iocb list 9742 * @ndlp: pointer to a node-list data structure. 9743 * 9744 * This routine aborts all the IOCBs associated with an @ndlp from the 9745 * driver internal fabric IOCB list. The list contains fabric IOCBs to be 9746 * issued to the ELS IOCB ring. This abort function walks the fabric IOCB 9747 * list, removes each IOCB associated with the @ndlp off the list, set the 9748 * status feild to IOSTAT_LOCAL_REJECT, and invokes the callback function 9749 * associated with the IOCB. 9750 **/ 9751 void lpfc_fabric_abort_nport(struct lpfc_nodelist *ndlp) 9752 { 9753 LIST_HEAD(completions); 9754 struct lpfc_hba *phba = ndlp->phba; 9755 struct lpfc_iocbq *tmp_iocb, *piocb; 9756 struct lpfc_sli_ring *pring; 9757 9758 pring = lpfc_phba_elsring(phba); 9759 9760 if (unlikely(!pring)) 9761 return; 9762 9763 spin_lock_irq(&phba->hbalock); 9764 list_for_each_entry_safe(piocb, tmp_iocb, &phba->fabric_iocb_list, 9765 list) { 9766 if ((lpfc_check_sli_ndlp(phba, pring, piocb, ndlp))) { 9767 9768 list_move_tail(&piocb->list, &completions); 9769 } 9770 } 9771 spin_unlock_irq(&phba->hbalock); 9772 9773 /* Cancel all the IOCBs from the completions list */ 9774 lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT, 9775 IOERR_SLI_ABORTED); 9776 } 9777 9778 /** 9779 * lpfc_fabric_abort_hba - Abort all iocbs on driver fabric iocb list 9780 * @phba: pointer to lpfc hba data structure. 9781 * 9782 * This routine aborts all the IOCBs currently on the driver internal 9783 * fabric IOCB list. The list contains fabric IOCBs to be issued to the ELS 9784 * IOCB ring. This function takes the entire IOCB list off the fabric IOCB 9785 * list, removes IOCBs off the list, set the status feild to 9786 * IOSTAT_LOCAL_REJECT, and invokes the callback function associated with 9787 * the IOCB. 9788 **/ 9789 void lpfc_fabric_abort_hba(struct lpfc_hba *phba) 9790 { 9791 LIST_HEAD(completions); 9792 9793 spin_lock_irq(&phba->hbalock); 9794 list_splice_init(&phba->fabric_iocb_list, &completions); 9795 spin_unlock_irq(&phba->hbalock); 9796 9797 /* Cancel all the IOCBs from the completions list */ 9798 lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT, 9799 IOERR_SLI_ABORTED); 9800 } 9801 9802 /** 9803 * lpfc_sli4_vport_delete_els_xri_aborted -Remove all ndlp references for vport 9804 * @vport: pointer to lpfc vport data structure. 9805 * 9806 * This routine is invoked by the vport cleanup for deletions and the cleanup 9807 * for an ndlp on removal. 9808 **/ 9809 void 9810 lpfc_sli4_vport_delete_els_xri_aborted(struct lpfc_vport *vport) 9811 { 9812 struct lpfc_hba *phba = vport->phba; 9813 struct lpfc_sglq *sglq_entry = NULL, *sglq_next = NULL; 9814 unsigned long iflag = 0; 9815 9816 spin_lock_irqsave(&phba->hbalock, iflag); 9817 spin_lock(&phba->sli4_hba.sgl_list_lock); 9818 list_for_each_entry_safe(sglq_entry, sglq_next, 9819 &phba->sli4_hba.lpfc_abts_els_sgl_list, list) { 9820 if (sglq_entry->ndlp && sglq_entry->ndlp->vport == vport) 9821 sglq_entry->ndlp = NULL; 9822 } 9823 spin_unlock(&phba->sli4_hba.sgl_list_lock); 9824 spin_unlock_irqrestore(&phba->hbalock, iflag); 9825 return; 9826 } 9827 9828 /** 9829 * lpfc_sli4_els_xri_aborted - Slow-path process of els xri abort 9830 * @phba: pointer to lpfc hba data structure. 9831 * @axri: pointer to the els xri abort wcqe structure. 9832 * 9833 * This routine is invoked by the worker thread to process a SLI4 slow-path 9834 * ELS aborted xri. 9835 **/ 9836 void 9837 lpfc_sli4_els_xri_aborted(struct lpfc_hba *phba, 9838 struct sli4_wcqe_xri_aborted *axri) 9839 { 9840 uint16_t xri = bf_get(lpfc_wcqe_xa_xri, axri); 9841 uint16_t rxid = bf_get(lpfc_wcqe_xa_remote_xid, axri); 9842 uint16_t lxri = 0; 9843 9844 struct lpfc_sglq *sglq_entry = NULL, *sglq_next = NULL; 9845 unsigned long iflag = 0; 9846 struct lpfc_nodelist *ndlp; 9847 struct lpfc_sli_ring *pring; 9848 9849 pring = lpfc_phba_elsring(phba); 9850 9851 spin_lock_irqsave(&phba->hbalock, iflag); 9852 spin_lock(&phba->sli4_hba.sgl_list_lock); 9853 list_for_each_entry_safe(sglq_entry, sglq_next, 9854 &phba->sli4_hba.lpfc_abts_els_sgl_list, list) { 9855 if (sglq_entry->sli4_xritag == xri) { 9856 list_del(&sglq_entry->list); 9857 ndlp = sglq_entry->ndlp; 9858 sglq_entry->ndlp = NULL; 9859 list_add_tail(&sglq_entry->list, 9860 &phba->sli4_hba.lpfc_els_sgl_list); 9861 sglq_entry->state = SGL_FREED; 9862 spin_unlock(&phba->sli4_hba.sgl_list_lock); 9863 spin_unlock_irqrestore(&phba->hbalock, iflag); 9864 lpfc_set_rrq_active(phba, ndlp, 9865 sglq_entry->sli4_lxritag, 9866 rxid, 1); 9867 9868 /* Check if TXQ queue needs to be serviced */ 9869 if (pring && !list_empty(&pring->txq)) 9870 lpfc_worker_wake_up(phba); 9871 return; 9872 } 9873 } 9874 spin_unlock(&phba->sli4_hba.sgl_list_lock); 9875 lxri = lpfc_sli4_xri_inrange(phba, xri); 9876 if (lxri == NO_XRI) { 9877 spin_unlock_irqrestore(&phba->hbalock, iflag); 9878 return; 9879 } 9880 spin_lock(&phba->sli4_hba.sgl_list_lock); 9881 sglq_entry = __lpfc_get_active_sglq(phba, lxri); 9882 if (!sglq_entry || (sglq_entry->sli4_xritag != xri)) { 9883 spin_unlock(&phba->sli4_hba.sgl_list_lock); 9884 spin_unlock_irqrestore(&phba->hbalock, iflag); 9885 return; 9886 } 9887 sglq_entry->state = SGL_XRI_ABORTED; 9888 spin_unlock(&phba->sli4_hba.sgl_list_lock); 9889 spin_unlock_irqrestore(&phba->hbalock, iflag); 9890 return; 9891 } 9892 9893 /* lpfc_sli_abts_recover_port - Recover a port that failed a BLS_ABORT req. 9894 * @vport: pointer to virtual port object. 9895 * @ndlp: nodelist pointer for the impacted node. 9896 * 9897 * The driver calls this routine in response to an SLI4 XRI ABORT CQE 9898 * or an SLI3 ASYNC_STATUS_CN event from the port. For either event, 9899 * the driver is required to send a LOGO to the remote node before it 9900 * attempts to recover its login to the remote node. 9901 */ 9902 void 9903 lpfc_sli_abts_recover_port(struct lpfc_vport *vport, 9904 struct lpfc_nodelist *ndlp) 9905 { 9906 struct Scsi_Host *shost; 9907 struct lpfc_hba *phba; 9908 unsigned long flags = 0; 9909 9910 shost = lpfc_shost_from_vport(vport); 9911 phba = vport->phba; 9912 if (ndlp->nlp_state != NLP_STE_MAPPED_NODE) { 9913 lpfc_printf_log(phba, KERN_INFO, 9914 LOG_SLI, "3093 No rport recovery needed. " 9915 "rport in state 0x%x\n", ndlp->nlp_state); 9916 return; 9917 } 9918 lpfc_printf_log(phba, KERN_ERR, 9919 LOG_ELS | LOG_FCP_ERROR | LOG_NVME_IOERR, 9920 "3094 Start rport recovery on shost id 0x%x " 9921 "fc_id 0x%06x vpi 0x%x rpi 0x%x state 0x%x " 9922 "flags 0x%x\n", 9923 shost->host_no, ndlp->nlp_DID, 9924 vport->vpi, ndlp->nlp_rpi, ndlp->nlp_state, 9925 ndlp->nlp_flag); 9926 /* 9927 * The rport is not responding. Remove the FCP-2 flag to prevent 9928 * an ADISC in the follow-up recovery code. 9929 */ 9930 spin_lock_irqsave(shost->host_lock, flags); 9931 ndlp->nlp_fcp_info &= ~NLP_FCP_2_DEVICE; 9932 ndlp->nlp_flag |= NLP_ISSUE_LOGO; 9933 spin_unlock_irqrestore(shost->host_lock, flags); 9934 lpfc_unreg_rpi(vport, ndlp); 9935 } 9936 9937