1 /******************************************************************* 2 * This file is part of the Emulex Linux Device Driver for * 3 * Fibre Channel Host Bus Adapters. * 4 * Copyright (C) 2017-2021 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 #include <linux/delay.h> 29 30 #include <scsi/scsi.h> 31 #include <scsi/scsi_device.h> 32 #include <scsi/scsi_host.h> 33 #include <scsi/scsi_transport_fc.h> 34 #include <uapi/scsi/fc/fc_fs.h> 35 #include <uapi/scsi/fc/fc_els.h> 36 37 #include "lpfc_hw4.h" 38 #include "lpfc_hw.h" 39 #include "lpfc_sli.h" 40 #include "lpfc_sli4.h" 41 #include "lpfc_nl.h" 42 #include "lpfc_disc.h" 43 #include "lpfc_scsi.h" 44 #include "lpfc.h" 45 #include "lpfc_logmsg.h" 46 #include "lpfc_crtn.h" 47 #include "lpfc_vport.h" 48 #include "lpfc_debugfs.h" 49 50 static int lpfc_els_retry(struct lpfc_hba *, struct lpfc_iocbq *, 51 struct lpfc_iocbq *); 52 static void lpfc_cmpl_fabric_iocb(struct lpfc_hba *, struct lpfc_iocbq *, 53 struct lpfc_iocbq *); 54 static void lpfc_fabric_abort_vport(struct lpfc_vport *vport); 55 static int lpfc_issue_els_fdisc(struct lpfc_vport *vport, 56 struct lpfc_nodelist *ndlp, uint8_t retry); 57 static int lpfc_issue_fabric_iocb(struct lpfc_hba *phba, 58 struct lpfc_iocbq *iocb); 59 static void lpfc_cmpl_els_edc(struct lpfc_hba *phba, 60 struct lpfc_iocbq *cmdiocb, 61 struct lpfc_iocbq *rspiocb); 62 static void lpfc_cmpl_els_uvem(struct lpfc_hba *, struct lpfc_iocbq *, 63 struct lpfc_iocbq *); 64 65 static int lpfc_max_els_tries = 3; 66 67 static void lpfc_init_cs_ctl_bitmap(struct lpfc_vport *vport); 68 static void lpfc_vmid_set_cs_ctl_range(struct lpfc_vport *vport, u32 min, u32 max); 69 static void lpfc_vmid_put_cs_ctl(struct lpfc_vport *vport, u32 ctcl_vmid); 70 71 /** 72 * lpfc_els_chk_latt - Check host link attention event for a vport 73 * @vport: pointer to a host virtual N_Port data structure. 74 * 75 * This routine checks whether there is an outstanding host link 76 * attention event during the discovery process with the @vport. It is done 77 * by reading the HBA's Host Attention (HA) register. If there is any host 78 * link attention events during this @vport's discovery process, the @vport 79 * shall be marked as FC_ABORT_DISCOVERY, a host link attention clear shall 80 * be issued if the link state is not already in host link cleared state, 81 * and a return code shall indicate whether the host link attention event 82 * had happened. 83 * 84 * Note that, if either the host link is in state LPFC_LINK_DOWN or @vport 85 * state in LPFC_VPORT_READY, the request for checking host link attention 86 * event will be ignored and a return code shall indicate no host link 87 * attention event had happened. 88 * 89 * Return codes 90 * 0 - no host link attention event happened 91 * 1 - host link attention event happened 92 **/ 93 int 94 lpfc_els_chk_latt(struct lpfc_vport *vport) 95 { 96 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 97 struct lpfc_hba *phba = vport->phba; 98 uint32_t ha_copy; 99 100 if (vport->port_state >= LPFC_VPORT_READY || 101 phba->link_state == LPFC_LINK_DOWN || 102 phba->sli_rev > LPFC_SLI_REV3) 103 return 0; 104 105 /* Read the HBA Host Attention Register */ 106 if (lpfc_readl(phba->HAregaddr, &ha_copy)) 107 return 1; 108 109 if (!(ha_copy & HA_LATT)) 110 return 0; 111 112 /* Pending Link Event during Discovery */ 113 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 114 "0237 Pending Link Event during " 115 "Discovery: State x%x\n", 116 phba->pport->port_state); 117 118 /* CLEAR_LA should re-enable link attention events and 119 * we should then immediately take a LATT event. The 120 * LATT processing should call lpfc_linkdown() which 121 * will cleanup any left over in-progress discovery 122 * events. 123 */ 124 spin_lock_irq(shost->host_lock); 125 vport->fc_flag |= FC_ABORT_DISCOVERY; 126 spin_unlock_irq(shost->host_lock); 127 128 if (phba->link_state != LPFC_CLEAR_LA) 129 lpfc_issue_clear_la(phba, vport); 130 131 return 1; 132 } 133 134 /** 135 * lpfc_prep_els_iocb - Allocate and prepare a lpfc iocb data structure 136 * @vport: pointer to a host virtual N_Port data structure. 137 * @expectRsp: flag indicating whether response is expected. 138 * @cmdSize: size of the ELS command. 139 * @retry: number of retries to the command IOCB when it fails. 140 * @ndlp: pointer to a node-list data structure. 141 * @did: destination identifier. 142 * @elscmd: the ELS command code. 143 * 144 * This routine is used for allocating a lpfc-IOCB data structure from 145 * the driver lpfc-IOCB free-list and prepare the IOCB with the parameters 146 * passed into the routine for discovery state machine to issue an Extended 147 * Link Service (ELS) commands. It is a generic lpfc-IOCB allocation 148 * and preparation routine that is used by all the discovery state machine 149 * routines and the ELS command-specific fields will be later set up by 150 * the individual discovery machine routines after calling this routine 151 * allocating and preparing a generic IOCB data structure. It fills in the 152 * Buffer Descriptor Entries (BDEs), allocates buffers for both command 153 * payload and response payload (if expected). The reference count on the 154 * ndlp is incremented by 1 and the reference to the ndlp is put into 155 * context1 of the IOCB data structure for this IOCB to hold the ndlp 156 * reference for the command's callback function to access later. 157 * 158 * Return code 159 * Pointer to the newly allocated/prepared els iocb data structure 160 * NULL - when els iocb data structure allocation/preparation failed 161 **/ 162 struct lpfc_iocbq * 163 lpfc_prep_els_iocb(struct lpfc_vport *vport, uint8_t expectRsp, 164 uint16_t cmdSize, uint8_t retry, 165 struct lpfc_nodelist *ndlp, uint32_t did, 166 uint32_t elscmd) 167 { 168 struct lpfc_hba *phba = vport->phba; 169 struct lpfc_iocbq *elsiocb; 170 struct lpfc_dmabuf *pcmd, *prsp, *pbuflist; 171 struct ulp_bde64 *bpl; 172 IOCB_t *icmd; 173 174 175 if (!lpfc_is_link_up(phba)) 176 return NULL; 177 178 /* Allocate buffer for command iocb */ 179 elsiocb = lpfc_sli_get_iocbq(phba); 180 181 if (elsiocb == NULL) 182 return NULL; 183 184 /* 185 * If this command is for fabric controller and HBA running 186 * in FIP mode send FLOGI, FDISC and LOGO as FIP frames. 187 */ 188 if ((did == Fabric_DID) && 189 (phba->hba_flag & HBA_FIP_SUPPORT) && 190 ((elscmd == ELS_CMD_FLOGI) || 191 (elscmd == ELS_CMD_FDISC) || 192 (elscmd == ELS_CMD_LOGO))) 193 switch (elscmd) { 194 case ELS_CMD_FLOGI: 195 elsiocb->iocb_flag |= 196 ((LPFC_ELS_ID_FLOGI << LPFC_FIP_ELS_ID_SHIFT) 197 & LPFC_FIP_ELS_ID_MASK); 198 break; 199 case ELS_CMD_FDISC: 200 elsiocb->iocb_flag |= 201 ((LPFC_ELS_ID_FDISC << LPFC_FIP_ELS_ID_SHIFT) 202 & LPFC_FIP_ELS_ID_MASK); 203 break; 204 case ELS_CMD_LOGO: 205 elsiocb->iocb_flag |= 206 ((LPFC_ELS_ID_LOGO << LPFC_FIP_ELS_ID_SHIFT) 207 & LPFC_FIP_ELS_ID_MASK); 208 break; 209 } 210 else 211 elsiocb->iocb_flag &= ~LPFC_FIP_ELS_ID_MASK; 212 213 icmd = &elsiocb->iocb; 214 215 /* fill in BDEs for command */ 216 /* Allocate buffer for command payload */ 217 pcmd = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL); 218 if (pcmd) 219 pcmd->virt = lpfc_mbuf_alloc(phba, MEM_PRI, &pcmd->phys); 220 if (!pcmd || !pcmd->virt) 221 goto els_iocb_free_pcmb_exit; 222 223 INIT_LIST_HEAD(&pcmd->list); 224 225 /* Allocate buffer for response payload */ 226 if (expectRsp) { 227 prsp = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL); 228 if (prsp) 229 prsp->virt = lpfc_mbuf_alloc(phba, MEM_PRI, 230 &prsp->phys); 231 if (!prsp || !prsp->virt) 232 goto els_iocb_free_prsp_exit; 233 INIT_LIST_HEAD(&prsp->list); 234 } else 235 prsp = NULL; 236 237 /* Allocate buffer for Buffer ptr list */ 238 pbuflist = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL); 239 if (pbuflist) 240 pbuflist->virt = lpfc_mbuf_alloc(phba, MEM_PRI, 241 &pbuflist->phys); 242 if (!pbuflist || !pbuflist->virt) 243 goto els_iocb_free_pbuf_exit; 244 245 INIT_LIST_HEAD(&pbuflist->list); 246 247 if (expectRsp) { 248 icmd->un.elsreq64.bdl.addrHigh = putPaddrHigh(pbuflist->phys); 249 icmd->un.elsreq64.bdl.addrLow = putPaddrLow(pbuflist->phys); 250 icmd->un.elsreq64.bdl.bdeFlags = BUFF_TYPE_BLP_64; 251 icmd->un.elsreq64.bdl.bdeSize = (2 * sizeof(struct ulp_bde64)); 252 253 icmd->un.elsreq64.remoteID = did; /* DID */ 254 icmd->ulpCommand = CMD_ELS_REQUEST64_CR; 255 if (elscmd == ELS_CMD_FLOGI) 256 icmd->ulpTimeout = FF_DEF_RATOV * 2; 257 else if (elscmd == ELS_CMD_LOGO) 258 icmd->ulpTimeout = phba->fc_ratov; 259 else 260 icmd->ulpTimeout = phba->fc_ratov * 2; 261 } else { 262 icmd->un.xseq64.bdl.addrHigh = putPaddrHigh(pbuflist->phys); 263 icmd->un.xseq64.bdl.addrLow = putPaddrLow(pbuflist->phys); 264 icmd->un.xseq64.bdl.bdeFlags = BUFF_TYPE_BLP_64; 265 icmd->un.xseq64.bdl.bdeSize = sizeof(struct ulp_bde64); 266 icmd->un.xseq64.xmit_els_remoteID = did; /* DID */ 267 icmd->ulpCommand = CMD_XMIT_ELS_RSP64_CX; 268 } 269 icmd->ulpBdeCount = 1; 270 icmd->ulpLe = 1; 271 icmd->ulpClass = CLASS3; 272 273 /* 274 * If we have NPIV enabled, we want to send ELS traffic by VPI. 275 * For SLI4, since the driver controls VPIs we also want to include 276 * all ELS pt2pt protocol traffic as well. 277 */ 278 if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) || 279 ((phba->sli_rev == LPFC_SLI_REV4) && 280 (vport->fc_flag & FC_PT2PT))) { 281 282 if (expectRsp) { 283 icmd->un.elsreq64.myID = vport->fc_myDID; 284 285 /* For ELS_REQUEST64_CR, use the VPI by default */ 286 icmd->ulpContext = phba->vpi_ids[vport->vpi]; 287 } 288 289 icmd->ulpCt_h = 0; 290 /* The CT field must be 0=INVALID_RPI for the ECHO cmd */ 291 if (elscmd == ELS_CMD_ECHO) 292 icmd->ulpCt_l = 0; /* context = invalid RPI */ 293 else 294 icmd->ulpCt_l = 1; /* context = VPI */ 295 } 296 297 bpl = (struct ulp_bde64 *) pbuflist->virt; 298 bpl->addrLow = le32_to_cpu(putPaddrLow(pcmd->phys)); 299 bpl->addrHigh = le32_to_cpu(putPaddrHigh(pcmd->phys)); 300 bpl->tus.f.bdeSize = cmdSize; 301 bpl->tus.f.bdeFlags = 0; 302 bpl->tus.w = le32_to_cpu(bpl->tus.w); 303 304 if (expectRsp) { 305 bpl++; 306 bpl->addrLow = le32_to_cpu(putPaddrLow(prsp->phys)); 307 bpl->addrHigh = le32_to_cpu(putPaddrHigh(prsp->phys)); 308 bpl->tus.f.bdeSize = FCELSSIZE; 309 bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64; 310 bpl->tus.w = le32_to_cpu(bpl->tus.w); 311 } 312 313 elsiocb->context2 = pcmd; 314 elsiocb->context3 = pbuflist; 315 elsiocb->retry = retry; 316 elsiocb->vport = vport; 317 elsiocb->drvrTimeout = (phba->fc_ratov << 1) + LPFC_DRVR_TIMEOUT; 318 319 if (prsp) { 320 list_add(&prsp->list, &pcmd->list); 321 } 322 if (expectRsp) { 323 /* Xmit ELS command <elsCmd> to remote NPORT <did> */ 324 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, 325 "0116 Xmit ELS command x%x to remote " 326 "NPORT x%x I/O tag: x%x, port state:x%x " 327 "rpi x%x fc_flag:x%x nlp_flag:x%x vport:x%p\n", 328 elscmd, did, elsiocb->iotag, 329 vport->port_state, ndlp->nlp_rpi, 330 vport->fc_flag, ndlp->nlp_flag, vport); 331 } else { 332 /* Xmit ELS response <elsCmd> to remote NPORT <did> */ 333 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, 334 "0117 Xmit ELS response x%x to remote " 335 "NPORT x%x I/O tag: x%x, size: x%x " 336 "port_state x%x rpi x%x fc_flag x%x\n", 337 elscmd, ndlp->nlp_DID, elsiocb->iotag, 338 cmdSize, vport->port_state, 339 ndlp->nlp_rpi, vport->fc_flag); 340 } 341 return elsiocb; 342 343 els_iocb_free_pbuf_exit: 344 if (expectRsp) 345 lpfc_mbuf_free(phba, prsp->virt, prsp->phys); 346 kfree(pbuflist); 347 348 els_iocb_free_prsp_exit: 349 lpfc_mbuf_free(phba, pcmd->virt, pcmd->phys); 350 kfree(prsp); 351 352 els_iocb_free_pcmb_exit: 353 kfree(pcmd); 354 lpfc_sli_release_iocbq(phba, elsiocb); 355 return NULL; 356 } 357 358 /** 359 * lpfc_issue_fabric_reglogin - Issue fabric registration login for a vport 360 * @vport: pointer to a host virtual N_Port data structure. 361 * 362 * This routine issues a fabric registration login for a @vport. An 363 * active ndlp node with Fabric_DID must already exist for this @vport. 364 * The routine invokes two mailbox commands to carry out fabric registration 365 * login through the HBA firmware: the first mailbox command requests the 366 * HBA to perform link configuration for the @vport; and the second mailbox 367 * command requests the HBA to perform the actual fabric registration login 368 * with the @vport. 369 * 370 * Return code 371 * 0 - successfully issued fabric registration login for @vport 372 * -ENXIO -- failed to issue fabric registration login for @vport 373 **/ 374 int 375 lpfc_issue_fabric_reglogin(struct lpfc_vport *vport) 376 { 377 struct lpfc_hba *phba = vport->phba; 378 LPFC_MBOXQ_t *mbox; 379 struct lpfc_dmabuf *mp; 380 struct lpfc_nodelist *ndlp; 381 struct serv_parm *sp; 382 int rc; 383 int err = 0; 384 385 sp = &phba->fc_fabparam; 386 ndlp = lpfc_findnode_did(vport, Fabric_DID); 387 if (!ndlp) { 388 err = 1; 389 goto fail; 390 } 391 392 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 393 if (!mbox) { 394 err = 2; 395 goto fail; 396 } 397 398 vport->port_state = LPFC_FABRIC_CFG_LINK; 399 lpfc_config_link(phba, mbox); 400 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl; 401 mbox->vport = vport; 402 403 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT); 404 if (rc == MBX_NOT_FINISHED) { 405 err = 3; 406 goto fail_free_mbox; 407 } 408 409 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 410 if (!mbox) { 411 err = 4; 412 goto fail; 413 } 414 rc = lpfc_reg_rpi(phba, vport->vpi, Fabric_DID, (uint8_t *)sp, mbox, 415 ndlp->nlp_rpi); 416 if (rc) { 417 err = 5; 418 goto fail_free_mbox; 419 } 420 421 mbox->mbox_cmpl = lpfc_mbx_cmpl_fabric_reg_login; 422 mbox->vport = vport; 423 /* increment the reference count on ndlp to hold reference 424 * for the callback routine. 425 */ 426 mbox->ctx_ndlp = lpfc_nlp_get(ndlp); 427 if (!mbox->ctx_ndlp) { 428 err = 6; 429 goto fail_no_ndlp; 430 } 431 432 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT); 433 if (rc == MBX_NOT_FINISHED) { 434 err = 7; 435 goto fail_issue_reg_login; 436 } 437 438 return 0; 439 440 fail_issue_reg_login: 441 /* decrement the reference count on ndlp just incremented 442 * for the failed mbox command. 443 */ 444 lpfc_nlp_put(ndlp); 445 fail_no_ndlp: 446 mp = (struct lpfc_dmabuf *)mbox->ctx_buf; 447 lpfc_mbuf_free(phba, mp->virt, mp->phys); 448 kfree(mp); 449 fail_free_mbox: 450 mempool_free(mbox, phba->mbox_mem_pool); 451 452 fail: 453 lpfc_vport_set_state(vport, FC_VPORT_FAILED); 454 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 455 "0249 Cannot issue Register Fabric login: Err %d\n", 456 err); 457 return -ENXIO; 458 } 459 460 /** 461 * lpfc_issue_reg_vfi - Register VFI for this vport's fabric login 462 * @vport: pointer to a host virtual N_Port data structure. 463 * 464 * This routine issues a REG_VFI mailbox for the vfi, vpi, fcfi triplet for 465 * the @vport. This mailbox command is necessary for SLI4 port only. 466 * 467 * Return code 468 * 0 - successfully issued REG_VFI for @vport 469 * A failure code otherwise. 470 **/ 471 int 472 lpfc_issue_reg_vfi(struct lpfc_vport *vport) 473 { 474 struct lpfc_hba *phba = vport->phba; 475 LPFC_MBOXQ_t *mboxq = NULL; 476 struct lpfc_nodelist *ndlp; 477 struct lpfc_dmabuf *dmabuf = NULL; 478 int rc = 0; 479 480 /* move forward in case of SLI4 FC port loopback test and pt2pt mode */ 481 if ((phba->sli_rev == LPFC_SLI_REV4) && 482 !(phba->link_flag & LS_LOOPBACK_MODE) && 483 !(vport->fc_flag & FC_PT2PT)) { 484 ndlp = lpfc_findnode_did(vport, Fabric_DID); 485 if (!ndlp) { 486 rc = -ENODEV; 487 goto fail; 488 } 489 } 490 491 mboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 492 if (!mboxq) { 493 rc = -ENOMEM; 494 goto fail; 495 } 496 497 /* Supply CSP's only if we are fabric connect or pt-to-pt connect */ 498 if ((vport->fc_flag & FC_FABRIC) || (vport->fc_flag & FC_PT2PT)) { 499 dmabuf = kzalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL); 500 if (!dmabuf) { 501 rc = -ENOMEM; 502 goto fail; 503 } 504 dmabuf->virt = lpfc_mbuf_alloc(phba, MEM_PRI, &dmabuf->phys); 505 if (!dmabuf->virt) { 506 rc = -ENOMEM; 507 goto fail; 508 } 509 memcpy(dmabuf->virt, &phba->fc_fabparam, 510 sizeof(struct serv_parm)); 511 } 512 513 vport->port_state = LPFC_FABRIC_CFG_LINK; 514 if (dmabuf) 515 lpfc_reg_vfi(mboxq, vport, dmabuf->phys); 516 else 517 lpfc_reg_vfi(mboxq, vport, 0); 518 519 mboxq->mbox_cmpl = lpfc_mbx_cmpl_reg_vfi; 520 mboxq->vport = vport; 521 mboxq->ctx_buf = dmabuf; 522 rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_NOWAIT); 523 if (rc == MBX_NOT_FINISHED) { 524 rc = -ENXIO; 525 goto fail; 526 } 527 return 0; 528 529 fail: 530 if (mboxq) 531 mempool_free(mboxq, phba->mbox_mem_pool); 532 if (dmabuf) { 533 if (dmabuf->virt) 534 lpfc_mbuf_free(phba, dmabuf->virt, dmabuf->phys); 535 kfree(dmabuf); 536 } 537 538 lpfc_vport_set_state(vport, FC_VPORT_FAILED); 539 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 540 "0289 Issue Register VFI failed: Err %d\n", rc); 541 return rc; 542 } 543 544 /** 545 * lpfc_issue_unreg_vfi - Unregister VFI for this vport's fabric login 546 * @vport: pointer to a host virtual N_Port data structure. 547 * 548 * This routine issues a UNREG_VFI mailbox with the vfi, vpi, fcfi triplet for 549 * the @vport. This mailbox command is necessary for SLI4 port only. 550 * 551 * Return code 552 * 0 - successfully issued REG_VFI for @vport 553 * A failure code otherwise. 554 **/ 555 int 556 lpfc_issue_unreg_vfi(struct lpfc_vport *vport) 557 { 558 struct lpfc_hba *phba = vport->phba; 559 struct Scsi_Host *shost; 560 LPFC_MBOXQ_t *mboxq; 561 int rc; 562 563 mboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 564 if (!mboxq) { 565 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 566 "2556 UNREG_VFI mbox allocation failed" 567 "HBA state x%x\n", phba->pport->port_state); 568 return -ENOMEM; 569 } 570 571 lpfc_unreg_vfi(mboxq, vport); 572 mboxq->vport = vport; 573 mboxq->mbox_cmpl = lpfc_unregister_vfi_cmpl; 574 575 rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_NOWAIT); 576 if (rc == MBX_NOT_FINISHED) { 577 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 578 "2557 UNREG_VFI issue mbox failed rc x%x " 579 "HBA state x%x\n", 580 rc, phba->pport->port_state); 581 mempool_free(mboxq, phba->mbox_mem_pool); 582 return -EIO; 583 } 584 585 shost = lpfc_shost_from_vport(vport); 586 spin_lock_irq(shost->host_lock); 587 vport->fc_flag &= ~FC_VFI_REGISTERED; 588 spin_unlock_irq(shost->host_lock); 589 return 0; 590 } 591 592 /** 593 * lpfc_check_clean_addr_bit - Check whether assigned FCID is clean. 594 * @vport: pointer to a host virtual N_Port data structure. 595 * @sp: pointer to service parameter data structure. 596 * 597 * This routine is called from FLOGI/FDISC completion handler functions. 598 * lpfc_check_clean_addr_bit return 1 when FCID/Fabric portname/ Fabric 599 * node nodename is changed in the completion service parameter else return 600 * 0. This function also set flag in the vport data structure to delay 601 * NP_Port discovery after the FLOGI/FDISC completion if Clean address bit 602 * in FLOGI/FDISC response is cleared and FCID/Fabric portname/ Fabric 603 * node nodename is changed in the completion service parameter. 604 * 605 * Return code 606 * 0 - FCID and Fabric Nodename and Fabric portname is not changed. 607 * 1 - FCID or Fabric Nodename or Fabric portname is changed. 608 * 609 **/ 610 static uint8_t 611 lpfc_check_clean_addr_bit(struct lpfc_vport *vport, 612 struct serv_parm *sp) 613 { 614 struct lpfc_hba *phba = vport->phba; 615 uint8_t fabric_param_changed = 0; 616 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 617 618 if ((vport->fc_prevDID != vport->fc_myDID) || 619 memcmp(&vport->fabric_portname, &sp->portName, 620 sizeof(struct lpfc_name)) || 621 memcmp(&vport->fabric_nodename, &sp->nodeName, 622 sizeof(struct lpfc_name)) || 623 (vport->vport_flag & FAWWPN_PARAM_CHG)) { 624 fabric_param_changed = 1; 625 vport->vport_flag &= ~FAWWPN_PARAM_CHG; 626 } 627 /* 628 * Word 1 Bit 31 in common service parameter is overloaded. 629 * Word 1 Bit 31 in FLOGI request is multiple NPort request 630 * Word 1 Bit 31 in FLOGI response is clean address bit 631 * 632 * If fabric parameter is changed and clean address bit is 633 * cleared delay nport discovery if 634 * - vport->fc_prevDID != 0 (not initial discovery) OR 635 * - lpfc_delay_discovery module parameter is set. 636 */ 637 if (fabric_param_changed && !sp->cmn.clean_address_bit && 638 (vport->fc_prevDID || phba->cfg_delay_discovery)) { 639 spin_lock_irq(shost->host_lock); 640 vport->fc_flag |= FC_DISC_DELAYED; 641 spin_unlock_irq(shost->host_lock); 642 } 643 644 return fabric_param_changed; 645 } 646 647 648 /** 649 * lpfc_cmpl_els_flogi_fabric - Completion function for flogi to a fabric port 650 * @vport: pointer to a host virtual N_Port data structure. 651 * @ndlp: pointer to a node-list data structure. 652 * @sp: pointer to service parameter data structure. 653 * @irsp: pointer to the IOCB within the lpfc response IOCB. 654 * 655 * This routine is invoked by the lpfc_cmpl_els_flogi() completion callback 656 * function to handle the completion of a Fabric Login (FLOGI) into a fabric 657 * port in a fabric topology. It properly sets up the parameters to the @ndlp 658 * from the IOCB response. It also check the newly assigned N_Port ID to the 659 * @vport against the previously assigned N_Port ID. If it is different from 660 * the previously assigned Destination ID (DID), the lpfc_unreg_rpi() routine 661 * is invoked on all the remaining nodes with the @vport to unregister the 662 * Remote Port Indicators (RPIs). Finally, the lpfc_issue_fabric_reglogin() 663 * is invoked to register login to the fabric. 664 * 665 * Return code 666 * 0 - Success (currently, always return 0) 667 **/ 668 static int 669 lpfc_cmpl_els_flogi_fabric(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 670 struct serv_parm *sp, IOCB_t *irsp) 671 { 672 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 673 struct lpfc_hba *phba = vport->phba; 674 struct lpfc_nodelist *np; 675 struct lpfc_nodelist *next_np; 676 uint8_t fabric_param_changed; 677 678 spin_lock_irq(shost->host_lock); 679 vport->fc_flag |= FC_FABRIC; 680 spin_unlock_irq(shost->host_lock); 681 682 phba->fc_edtov = be32_to_cpu(sp->cmn.e_d_tov); 683 if (sp->cmn.edtovResolution) /* E_D_TOV ticks are in nanoseconds */ 684 phba->fc_edtov = (phba->fc_edtov + 999999) / 1000000; 685 686 phba->fc_edtovResol = sp->cmn.edtovResolution; 687 phba->fc_ratov = (be32_to_cpu(sp->cmn.w2.r_a_tov) + 999) / 1000; 688 689 if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) { 690 spin_lock_irq(shost->host_lock); 691 vport->fc_flag |= FC_PUBLIC_LOOP; 692 spin_unlock_irq(shost->host_lock); 693 } 694 695 vport->fc_myDID = irsp->un.ulpWord[4] & Mask_DID; 696 memcpy(&ndlp->nlp_portname, &sp->portName, sizeof(struct lpfc_name)); 697 memcpy(&ndlp->nlp_nodename, &sp->nodeName, sizeof(struct lpfc_name)); 698 ndlp->nlp_class_sup = 0; 699 if (sp->cls1.classValid) 700 ndlp->nlp_class_sup |= FC_COS_CLASS1; 701 if (sp->cls2.classValid) 702 ndlp->nlp_class_sup |= FC_COS_CLASS2; 703 if (sp->cls3.classValid) 704 ndlp->nlp_class_sup |= FC_COS_CLASS3; 705 if (sp->cls4.classValid) 706 ndlp->nlp_class_sup |= FC_COS_CLASS4; 707 ndlp->nlp_maxframe = ((sp->cmn.bbRcvSizeMsb & 0x0F) << 8) | 708 sp->cmn.bbRcvSizeLsb; 709 710 fabric_param_changed = lpfc_check_clean_addr_bit(vport, sp); 711 if (fabric_param_changed) { 712 /* Reset FDMI attribute masks based on config parameter */ 713 if (phba->cfg_enable_SmartSAN || 714 (phba->cfg_fdmi_on == LPFC_FDMI_SUPPORT)) { 715 /* Setup appropriate attribute masks */ 716 vport->fdmi_hba_mask = LPFC_FDMI2_HBA_ATTR; 717 if (phba->cfg_enable_SmartSAN) 718 vport->fdmi_port_mask = LPFC_FDMI2_SMART_ATTR; 719 else 720 vport->fdmi_port_mask = LPFC_FDMI2_PORT_ATTR; 721 } else { 722 vport->fdmi_hba_mask = 0; 723 vport->fdmi_port_mask = 0; 724 } 725 726 } 727 memcpy(&vport->fabric_portname, &sp->portName, 728 sizeof(struct lpfc_name)); 729 memcpy(&vport->fabric_nodename, &sp->nodeName, 730 sizeof(struct lpfc_name)); 731 memcpy(&phba->fc_fabparam, sp, sizeof(struct serv_parm)); 732 733 if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) { 734 if (sp->cmn.response_multiple_NPort) { 735 lpfc_printf_vlog(vport, KERN_WARNING, 736 LOG_ELS | LOG_VPORT, 737 "1816 FLOGI NPIV supported, " 738 "response data 0x%x\n", 739 sp->cmn.response_multiple_NPort); 740 spin_lock_irq(&phba->hbalock); 741 phba->link_flag |= LS_NPIV_FAB_SUPPORTED; 742 spin_unlock_irq(&phba->hbalock); 743 } else { 744 /* Because we asked f/w for NPIV it still expects us 745 to call reg_vnpid at least for the physical host */ 746 lpfc_printf_vlog(vport, KERN_WARNING, 747 LOG_ELS | LOG_VPORT, 748 "1817 Fabric does not support NPIV " 749 "- configuring single port mode.\n"); 750 spin_lock_irq(&phba->hbalock); 751 phba->link_flag &= ~LS_NPIV_FAB_SUPPORTED; 752 spin_unlock_irq(&phba->hbalock); 753 } 754 } 755 756 /* 757 * For FC we need to do some special processing because of the SLI 758 * Port's default settings of the Common Service Parameters. 759 */ 760 if ((phba->sli_rev == LPFC_SLI_REV4) && 761 (phba->sli4_hba.lnk_info.lnk_tp == LPFC_LNK_TYPE_FC)) { 762 /* If physical FC port changed, unreg VFI and ALL VPIs / RPIs */ 763 if (fabric_param_changed) 764 lpfc_unregister_fcf_prep(phba); 765 766 /* This should just update the VFI CSPs*/ 767 if (vport->fc_flag & FC_VFI_REGISTERED) 768 lpfc_issue_reg_vfi(vport); 769 } 770 771 if (fabric_param_changed && 772 !(vport->fc_flag & FC_VPORT_NEEDS_REG_VPI)) { 773 774 /* If our NportID changed, we need to ensure all 775 * remaining NPORTs get unreg_login'ed. 776 */ 777 list_for_each_entry_safe(np, next_np, 778 &vport->fc_nodes, nlp_listp) { 779 if ((np->nlp_state != NLP_STE_NPR_NODE) || 780 !(np->nlp_flag & NLP_NPR_ADISC)) 781 continue; 782 spin_lock_irq(&np->lock); 783 np->nlp_flag &= ~NLP_NPR_ADISC; 784 spin_unlock_irq(&np->lock); 785 lpfc_unreg_rpi(vport, np); 786 } 787 lpfc_cleanup_pending_mbox(vport); 788 789 if (phba->sli_rev == LPFC_SLI_REV4) { 790 lpfc_sli4_unreg_all_rpis(vport); 791 lpfc_mbx_unreg_vpi(vport); 792 spin_lock_irq(shost->host_lock); 793 vport->fc_flag |= FC_VPORT_NEEDS_INIT_VPI; 794 spin_unlock_irq(shost->host_lock); 795 } 796 797 /* 798 * For SLI3 and SLI4, the VPI needs to be reregistered in 799 * response to this fabric parameter change event. 800 */ 801 spin_lock_irq(shost->host_lock); 802 vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI; 803 spin_unlock_irq(shost->host_lock); 804 } else if ((phba->sli_rev == LPFC_SLI_REV4) && 805 !(vport->fc_flag & FC_VPORT_NEEDS_REG_VPI)) { 806 /* 807 * Driver needs to re-reg VPI in order for f/w 808 * to update the MAC address. 809 */ 810 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE); 811 lpfc_register_new_vport(phba, vport, ndlp); 812 return 0; 813 } 814 815 if (phba->sli_rev < LPFC_SLI_REV4) { 816 lpfc_nlp_set_state(vport, ndlp, NLP_STE_REG_LOGIN_ISSUE); 817 if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED && 818 vport->fc_flag & FC_VPORT_NEEDS_REG_VPI) 819 lpfc_register_new_vport(phba, vport, ndlp); 820 else 821 lpfc_issue_fabric_reglogin(vport); 822 } else { 823 ndlp->nlp_type |= NLP_FABRIC; 824 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE); 825 if ((!(vport->fc_flag & FC_VPORT_NEEDS_REG_VPI)) && 826 (vport->vpi_state & LPFC_VPI_REGISTERED)) { 827 lpfc_start_fdiscs(phba); 828 lpfc_do_scr_ns_plogi(phba, vport); 829 } else if (vport->fc_flag & FC_VFI_REGISTERED) 830 lpfc_issue_init_vpi(vport); 831 else { 832 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, 833 "3135 Need register VFI: (x%x/%x)\n", 834 vport->fc_prevDID, vport->fc_myDID); 835 lpfc_issue_reg_vfi(vport); 836 } 837 } 838 return 0; 839 } 840 841 /** 842 * lpfc_cmpl_els_flogi_nport - Completion function for flogi to an N_Port 843 * @vport: pointer to a host virtual N_Port data structure. 844 * @ndlp: pointer to a node-list data structure. 845 * @sp: pointer to service parameter data structure. 846 * 847 * This routine is invoked by the lpfc_cmpl_els_flogi() completion callback 848 * function to handle the completion of a Fabric Login (FLOGI) into an N_Port 849 * in a point-to-point topology. First, the @vport's N_Port Name is compared 850 * with the received N_Port Name: if the @vport's N_Port Name is greater than 851 * the received N_Port Name lexicographically, this node shall assign local 852 * N_Port ID (PT2PT_LocalID: 1) and remote N_Port ID (PT2PT_RemoteID: 2) and 853 * will send out Port Login (PLOGI) with the N_Port IDs assigned. Otherwise, 854 * this node shall just wait for the remote node to issue PLOGI and assign 855 * N_Port IDs. 856 * 857 * Return code 858 * 0 - Success 859 * -ENXIO - Fail 860 **/ 861 static int 862 lpfc_cmpl_els_flogi_nport(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 863 struct serv_parm *sp) 864 { 865 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 866 struct lpfc_hba *phba = vport->phba; 867 LPFC_MBOXQ_t *mbox; 868 int rc; 869 870 spin_lock_irq(shost->host_lock); 871 vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP); 872 vport->fc_flag |= FC_PT2PT; 873 spin_unlock_irq(shost->host_lock); 874 875 /* If we are pt2pt with another NPort, force NPIV off! */ 876 phba->sli3_options &= ~LPFC_SLI3_NPIV_ENABLED; 877 878 /* If physical FC port changed, unreg VFI and ALL VPIs / RPIs */ 879 if ((phba->sli_rev == LPFC_SLI_REV4) && phba->fc_topology_changed) { 880 lpfc_unregister_fcf_prep(phba); 881 882 spin_lock_irq(shost->host_lock); 883 vport->fc_flag &= ~FC_VFI_REGISTERED; 884 spin_unlock_irq(shost->host_lock); 885 phba->fc_topology_changed = 0; 886 } 887 888 rc = memcmp(&vport->fc_portname, &sp->portName, 889 sizeof(vport->fc_portname)); 890 891 if (rc >= 0) { 892 /* This side will initiate the PLOGI */ 893 spin_lock_irq(shost->host_lock); 894 vport->fc_flag |= FC_PT2PT_PLOGI; 895 spin_unlock_irq(shost->host_lock); 896 897 /* 898 * N_Port ID cannot be 0, set our Id to LocalID 899 * the other side will be RemoteID. 900 */ 901 902 /* not equal */ 903 if (rc) 904 vport->fc_myDID = PT2PT_LocalID; 905 906 /* Decrement ndlp reference count indicating that ndlp can be 907 * safely released when other references to it are done. 908 */ 909 lpfc_nlp_put(ndlp); 910 911 ndlp = lpfc_findnode_did(vport, PT2PT_RemoteID); 912 if (!ndlp) { 913 /* 914 * Cannot find existing Fabric ndlp, so allocate a 915 * new one 916 */ 917 ndlp = lpfc_nlp_init(vport, PT2PT_RemoteID); 918 if (!ndlp) 919 goto fail; 920 } 921 922 memcpy(&ndlp->nlp_portname, &sp->portName, 923 sizeof(struct lpfc_name)); 924 memcpy(&ndlp->nlp_nodename, &sp->nodeName, 925 sizeof(struct lpfc_name)); 926 /* Set state will put ndlp onto node list if not already done */ 927 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE); 928 spin_lock_irq(&ndlp->lock); 929 ndlp->nlp_flag |= NLP_NPR_2B_DISC; 930 spin_unlock_irq(&ndlp->lock); 931 932 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 933 if (!mbox) 934 goto fail; 935 936 lpfc_config_link(phba, mbox); 937 938 mbox->mbox_cmpl = lpfc_mbx_cmpl_local_config_link; 939 mbox->vport = vport; 940 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT); 941 if (rc == MBX_NOT_FINISHED) { 942 mempool_free(mbox, phba->mbox_mem_pool); 943 goto fail; 944 } 945 } else { 946 /* This side will wait for the PLOGI, decrement ndlp reference 947 * count indicating that ndlp can be released when other 948 * references to it are done. 949 */ 950 lpfc_nlp_put(ndlp); 951 952 /* Start discovery - this should just do CLEAR_LA */ 953 lpfc_disc_start(vport); 954 } 955 956 return 0; 957 fail: 958 return -ENXIO; 959 } 960 961 /** 962 * lpfc_cmpl_els_flogi - Completion callback function for flogi 963 * @phba: pointer to lpfc hba data structure. 964 * @cmdiocb: pointer to lpfc command iocb data structure. 965 * @rspiocb: pointer to lpfc response iocb data structure. 966 * 967 * This routine is the top-level completion callback function for issuing 968 * a Fabric Login (FLOGI) command. If the response IOCB reported error, 969 * the lpfc_els_retry() routine shall be invoked to retry the FLOGI. If 970 * retry has been made (either immediately or delayed with lpfc_els_retry() 971 * returning 1), the command IOCB will be released and function returned. 972 * If the retry attempt has been given up (possibly reach the maximum 973 * number of retries), one additional decrement of ndlp reference shall be 974 * invoked before going out after releasing the command IOCB. This will 975 * actually release the remote node (Note, lpfc_els_free_iocb() will also 976 * invoke one decrement of ndlp reference count). If no error reported in 977 * the IOCB status, the command Port ID field is used to determine whether 978 * this is a point-to-point topology or a fabric topology: if the Port ID 979 * field is assigned, it is a fabric topology; otherwise, it is a 980 * point-to-point topology. The routine lpfc_cmpl_els_flogi_fabric() or 981 * lpfc_cmpl_els_flogi_nport() shall be invoked accordingly to handle the 982 * specific topology completion conditions. 983 **/ 984 static void 985 lpfc_cmpl_els_flogi(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb, 986 struct lpfc_iocbq *rspiocb) 987 { 988 struct lpfc_vport *vport = cmdiocb->vport; 989 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 990 IOCB_t *irsp = &rspiocb->iocb; 991 struct lpfc_nodelist *ndlp = cmdiocb->context1; 992 struct lpfc_dmabuf *pcmd = cmdiocb->context2, *prsp; 993 struct serv_parm *sp; 994 uint16_t fcf_index; 995 int rc; 996 997 /* Check to see if link went down during discovery */ 998 if (lpfc_els_chk_latt(vport)) { 999 /* One additional decrement on node reference count to 1000 * trigger the release of the node 1001 */ 1002 lpfc_nlp_put(ndlp); 1003 goto out; 1004 } 1005 1006 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, 1007 "FLOGI cmpl: status:x%x/x%x state:x%x", 1008 irsp->ulpStatus, irsp->un.ulpWord[4], 1009 vport->port_state); 1010 1011 if (irsp->ulpStatus) { 1012 /* 1013 * In case of FIP mode, perform roundrobin FCF failover 1014 * due to new FCF discovery 1015 */ 1016 if ((phba->hba_flag & HBA_FIP_SUPPORT) && 1017 (phba->fcf.fcf_flag & FCF_DISCOVERY)) { 1018 if (phba->link_state < LPFC_LINK_UP) 1019 goto stop_rr_fcf_flogi; 1020 if ((phba->fcoe_cvl_eventtag_attn == 1021 phba->fcoe_cvl_eventtag) && 1022 (irsp->ulpStatus == IOSTAT_LOCAL_REJECT) && 1023 ((irsp->un.ulpWord[4] & IOERR_PARAM_MASK) == 1024 IOERR_SLI_ABORTED)) 1025 goto stop_rr_fcf_flogi; 1026 else 1027 phba->fcoe_cvl_eventtag_attn = 1028 phba->fcoe_cvl_eventtag; 1029 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP | LOG_ELS, 1030 "2611 FLOGI failed on FCF (x%x), " 1031 "status:x%x/x%x, tmo:x%x, perform " 1032 "roundrobin FCF failover\n", 1033 phba->fcf.current_rec.fcf_indx, 1034 irsp->ulpStatus, irsp->un.ulpWord[4], 1035 irsp->ulpTimeout); 1036 lpfc_sli4_set_fcf_flogi_fail(phba, 1037 phba->fcf.current_rec.fcf_indx); 1038 fcf_index = lpfc_sli4_fcf_rr_next_index_get(phba); 1039 rc = lpfc_sli4_fcf_rr_next_proc(vport, fcf_index); 1040 if (rc) 1041 goto out; 1042 } 1043 1044 stop_rr_fcf_flogi: 1045 /* FLOGI failure */ 1046 if (!(irsp->ulpStatus == IOSTAT_LOCAL_REJECT && 1047 ((irsp->un.ulpWord[4] & IOERR_PARAM_MASK) == 1048 IOERR_LOOP_OPEN_FAILURE))) 1049 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 1050 "2858 FLOGI failure Status:x%x/x%x TMO" 1051 ":x%x Data x%x x%x\n", 1052 irsp->ulpStatus, irsp->un.ulpWord[4], 1053 irsp->ulpTimeout, phba->hba_flag, 1054 phba->fcf.fcf_flag); 1055 1056 /* Check for retry */ 1057 if (lpfc_els_retry(phba, cmdiocb, rspiocb)) 1058 goto out; 1059 1060 lpfc_printf_vlog(vport, KERN_WARNING, LOG_TRACE_EVENT, 1061 "0150 FLOGI failure Status:x%x/x%x " 1062 "xri x%x TMO:x%x refcnt %d\n", 1063 irsp->ulpStatus, irsp->un.ulpWord[4], 1064 cmdiocb->sli4_xritag, irsp->ulpTimeout, 1065 kref_read(&ndlp->kref)); 1066 1067 /* If this is not a loop open failure, bail out */ 1068 if (!(irsp->ulpStatus == IOSTAT_LOCAL_REJECT && 1069 ((irsp->un.ulpWord[4] & IOERR_PARAM_MASK) == 1070 IOERR_LOOP_OPEN_FAILURE))) 1071 goto flogifail; 1072 1073 /* FLOGI failed, so there is no fabric */ 1074 spin_lock_irq(shost->host_lock); 1075 vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP); 1076 spin_unlock_irq(shost->host_lock); 1077 1078 /* If private loop, then allow max outstanding els to be 1079 * LPFC_MAX_DISC_THREADS (32). Scanning in the case of no 1080 * alpa map would take too long otherwise. 1081 */ 1082 if (phba->alpa_map[0] == 0) 1083 vport->cfg_discovery_threads = LPFC_MAX_DISC_THREADS; 1084 if ((phba->sli_rev == LPFC_SLI_REV4) && 1085 (!(vport->fc_flag & FC_VFI_REGISTERED) || 1086 (vport->fc_prevDID != vport->fc_myDID) || 1087 phba->fc_topology_changed)) { 1088 if (vport->fc_flag & FC_VFI_REGISTERED) { 1089 if (phba->fc_topology_changed) { 1090 lpfc_unregister_fcf_prep(phba); 1091 spin_lock_irq(shost->host_lock); 1092 vport->fc_flag &= ~FC_VFI_REGISTERED; 1093 spin_unlock_irq(shost->host_lock); 1094 phba->fc_topology_changed = 0; 1095 } else { 1096 lpfc_sli4_unreg_all_rpis(vport); 1097 } 1098 } 1099 1100 /* Do not register VFI if the driver aborted FLOGI */ 1101 if (!lpfc_error_lost_link(irsp)) 1102 lpfc_issue_reg_vfi(vport); 1103 1104 lpfc_nlp_put(ndlp); 1105 goto out; 1106 } 1107 goto flogifail; 1108 } 1109 spin_lock_irq(shost->host_lock); 1110 vport->fc_flag &= ~FC_VPORT_CVL_RCVD; 1111 vport->fc_flag &= ~FC_VPORT_LOGO_RCVD; 1112 spin_unlock_irq(shost->host_lock); 1113 1114 /* 1115 * The FLogI succeeded. Sync the data for the CPU before 1116 * accessing it. 1117 */ 1118 prsp = list_get_first(&pcmd->list, struct lpfc_dmabuf, list); 1119 if (!prsp) 1120 goto out; 1121 sp = prsp->virt + sizeof(uint32_t); 1122 1123 /* FLOGI completes successfully */ 1124 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, 1125 "0101 FLOGI completes successfully, I/O tag:x%x, " 1126 "xri x%x Data: x%x x%x x%x x%x x%x x%x x%x %d\n", 1127 cmdiocb->iotag, cmdiocb->sli4_xritag, 1128 irsp->un.ulpWord[4], sp->cmn.e_d_tov, 1129 sp->cmn.w2.r_a_tov, sp->cmn.edtovResolution, 1130 vport->port_state, vport->fc_flag, 1131 sp->cmn.priority_tagging, kref_read(&ndlp->kref)); 1132 1133 if (sp->cmn.priority_tagging) 1134 vport->vmid_flag |= LPFC_VMID_ISSUE_QFPA; 1135 1136 if (vport->port_state == LPFC_FLOGI) { 1137 /* 1138 * If Common Service Parameters indicate Nport 1139 * we are point to point, if Fport we are Fabric. 1140 */ 1141 if (sp->cmn.fPort) 1142 rc = lpfc_cmpl_els_flogi_fabric(vport, ndlp, sp, irsp); 1143 else if (!(phba->hba_flag & HBA_FCOE_MODE)) 1144 rc = lpfc_cmpl_els_flogi_nport(vport, ndlp, sp); 1145 else { 1146 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 1147 "2831 FLOGI response with cleared Fabric " 1148 "bit fcf_index 0x%x " 1149 "Switch Name %02x%02x%02x%02x%02x%02x%02x%02x " 1150 "Fabric Name " 1151 "%02x%02x%02x%02x%02x%02x%02x%02x\n", 1152 phba->fcf.current_rec.fcf_indx, 1153 phba->fcf.current_rec.switch_name[0], 1154 phba->fcf.current_rec.switch_name[1], 1155 phba->fcf.current_rec.switch_name[2], 1156 phba->fcf.current_rec.switch_name[3], 1157 phba->fcf.current_rec.switch_name[4], 1158 phba->fcf.current_rec.switch_name[5], 1159 phba->fcf.current_rec.switch_name[6], 1160 phba->fcf.current_rec.switch_name[7], 1161 phba->fcf.current_rec.fabric_name[0], 1162 phba->fcf.current_rec.fabric_name[1], 1163 phba->fcf.current_rec.fabric_name[2], 1164 phba->fcf.current_rec.fabric_name[3], 1165 phba->fcf.current_rec.fabric_name[4], 1166 phba->fcf.current_rec.fabric_name[5], 1167 phba->fcf.current_rec.fabric_name[6], 1168 phba->fcf.current_rec.fabric_name[7]); 1169 1170 lpfc_nlp_put(ndlp); 1171 spin_lock_irq(&phba->hbalock); 1172 phba->fcf.fcf_flag &= ~FCF_DISCOVERY; 1173 phba->hba_flag &= ~(FCF_RR_INPROG | HBA_DEVLOSS_TMO); 1174 spin_unlock_irq(&phba->hbalock); 1175 phba->fcf.fcf_redisc_attempted = 0; /* reset */ 1176 goto out; 1177 } 1178 if (!rc) { 1179 /* Mark the FCF discovery process done */ 1180 if (phba->hba_flag & HBA_FIP_SUPPORT) 1181 lpfc_printf_vlog(vport, KERN_INFO, LOG_FIP | 1182 LOG_ELS, 1183 "2769 FLOGI to FCF (x%x) " 1184 "completed successfully\n", 1185 phba->fcf.current_rec.fcf_indx); 1186 spin_lock_irq(&phba->hbalock); 1187 phba->fcf.fcf_flag &= ~FCF_DISCOVERY; 1188 phba->hba_flag &= ~(FCF_RR_INPROG | HBA_DEVLOSS_TMO); 1189 spin_unlock_irq(&phba->hbalock); 1190 phba->fcf.fcf_redisc_attempted = 0; /* reset */ 1191 goto out; 1192 } 1193 } else if (vport->port_state > LPFC_FLOGI && 1194 vport->fc_flag & FC_PT2PT) { 1195 /* 1196 * In a p2p topology, it is possible that discovery has 1197 * already progressed, and this completion can be ignored. 1198 * Recheck the indicated topology. 1199 */ 1200 if (!sp->cmn.fPort) 1201 goto out; 1202 } 1203 1204 flogifail: 1205 spin_lock_irq(&phba->hbalock); 1206 phba->fcf.fcf_flag &= ~FCF_DISCOVERY; 1207 spin_unlock_irq(&phba->hbalock); 1208 1209 if (!lpfc_error_lost_link(irsp)) { 1210 /* FLOGI failed, so just use loop map to make discovery list */ 1211 lpfc_disc_list_loopmap(vport); 1212 1213 /* Start discovery */ 1214 lpfc_disc_start(vport); 1215 } else if (((irsp->ulpStatus != IOSTAT_LOCAL_REJECT) || 1216 (((irsp->un.ulpWord[4] & IOERR_PARAM_MASK) != 1217 IOERR_SLI_ABORTED) && 1218 ((irsp->un.ulpWord[4] & IOERR_PARAM_MASK) != 1219 IOERR_SLI_DOWN))) && 1220 (phba->link_state != LPFC_CLEAR_LA)) { 1221 /* If FLOGI failed enable link interrupt. */ 1222 lpfc_issue_clear_la(phba, vport); 1223 } 1224 out: 1225 phba->hba_flag &= ~HBA_FLOGI_OUTSTANDING; 1226 lpfc_els_free_iocb(phba, cmdiocb); 1227 lpfc_nlp_put(ndlp); 1228 } 1229 1230 /** 1231 * lpfc_cmpl_els_link_down - Completion callback function for ELS command 1232 * aborted during a link down 1233 * @phba: pointer to lpfc hba data structure. 1234 * @cmdiocb: pointer to lpfc command iocb data structure. 1235 * @rspiocb: pointer to lpfc response iocb data structure. 1236 * 1237 */ 1238 static void 1239 lpfc_cmpl_els_link_down(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb, 1240 struct lpfc_iocbq *rspiocb) 1241 { 1242 IOCB_t *irsp; 1243 uint32_t *pcmd; 1244 uint32_t cmd; 1245 1246 pcmd = (uint32_t *)(((struct lpfc_dmabuf *)cmdiocb->context2)->virt); 1247 cmd = *pcmd; 1248 irsp = &rspiocb->iocb; 1249 1250 lpfc_printf_log(phba, KERN_INFO, LOG_ELS, 1251 "6445 ELS completes after LINK_DOWN: " 1252 " Status %x/%x cmd x%x flg x%x\n", 1253 irsp->ulpStatus, irsp->un.ulpWord[4], cmd, 1254 cmdiocb->iocb_flag); 1255 1256 if (cmdiocb->iocb_flag & LPFC_IO_FABRIC) { 1257 cmdiocb->iocb_flag &= ~LPFC_IO_FABRIC; 1258 atomic_dec(&phba->fabric_iocb_count); 1259 } 1260 lpfc_els_free_iocb(phba, cmdiocb); 1261 } 1262 1263 /** 1264 * lpfc_issue_els_flogi - Issue an flogi iocb command for a vport 1265 * @vport: pointer to a host virtual N_Port data structure. 1266 * @ndlp: pointer to a node-list data structure. 1267 * @retry: number of retries to the command IOCB. 1268 * 1269 * This routine issues a Fabric Login (FLOGI) Request ELS command 1270 * for a @vport. The initiator service parameters are put into the payload 1271 * of the FLOGI Request IOCB and the top-level callback function pointer 1272 * to lpfc_cmpl_els_flogi() routine is put to the IOCB completion callback 1273 * function field. The lpfc_issue_fabric_iocb routine is invoked to send 1274 * out FLOGI ELS command with one outstanding fabric IOCB at a time. 1275 * 1276 * Note that the ndlp reference count will be incremented by 1 for holding the 1277 * ndlp and the reference to ndlp will be stored into the context1 field of 1278 * the IOCB for the completion callback function to the FLOGI ELS command. 1279 * 1280 * Return code 1281 * 0 - successfully issued flogi iocb for @vport 1282 * 1 - failed to issue flogi iocb for @vport 1283 **/ 1284 static int 1285 lpfc_issue_els_flogi(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 1286 uint8_t retry) 1287 { 1288 struct lpfc_hba *phba = vport->phba; 1289 struct serv_parm *sp; 1290 IOCB_t *icmd; 1291 struct lpfc_iocbq *elsiocb; 1292 struct lpfc_iocbq defer_flogi_acc; 1293 uint8_t *pcmd; 1294 uint16_t cmdsize; 1295 uint32_t tmo, did; 1296 int rc; 1297 1298 cmdsize = (sizeof(uint32_t) + sizeof(struct serv_parm)); 1299 elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp, 1300 ndlp->nlp_DID, ELS_CMD_FLOGI); 1301 1302 if (!elsiocb) 1303 return 1; 1304 1305 icmd = &elsiocb->iocb; 1306 pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt); 1307 1308 /* For FLOGI request, remainder of payload is service parameters */ 1309 *((uint32_t *) (pcmd)) = ELS_CMD_FLOGI; 1310 pcmd += sizeof(uint32_t); 1311 memcpy(pcmd, &vport->fc_sparam, sizeof(struct serv_parm)); 1312 sp = (struct serv_parm *) pcmd; 1313 1314 /* Setup CSPs accordingly for Fabric */ 1315 sp->cmn.e_d_tov = 0; 1316 sp->cmn.w2.r_a_tov = 0; 1317 sp->cmn.virtual_fabric_support = 0; 1318 sp->cls1.classValid = 0; 1319 if (sp->cmn.fcphLow < FC_PH3) 1320 sp->cmn.fcphLow = FC_PH3; 1321 if (sp->cmn.fcphHigh < FC_PH3) 1322 sp->cmn.fcphHigh = FC_PH3; 1323 1324 /* Determine if switch supports priority tagging */ 1325 if (phba->cfg_vmid_priority_tagging) { 1326 sp->cmn.priority_tagging = 1; 1327 /* lpfc_vmid_host_uuid is combination of wwpn and wwnn */ 1328 if (uuid_is_null((uuid_t *)vport->lpfc_vmid_host_uuid)) { 1329 memcpy(vport->lpfc_vmid_host_uuid, phba->wwpn, 1330 sizeof(phba->wwpn)); 1331 memcpy(&vport->lpfc_vmid_host_uuid[8], phba->wwnn, 1332 sizeof(phba->wwnn)); 1333 } 1334 } 1335 1336 if (phba->sli_rev == LPFC_SLI_REV4) { 1337 if (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) == 1338 LPFC_SLI_INTF_IF_TYPE_0) { 1339 elsiocb->iocb.ulpCt_h = ((SLI4_CT_FCFI >> 1) & 1); 1340 elsiocb->iocb.ulpCt_l = (SLI4_CT_FCFI & 1); 1341 /* FLOGI needs to be 3 for WQE FCFI */ 1342 /* Set the fcfi to the fcfi we registered with */ 1343 elsiocb->iocb.ulpContext = phba->fcf.fcfi; 1344 } 1345 /* Can't do SLI4 class2 without support sequence coalescing */ 1346 sp->cls2.classValid = 0; 1347 sp->cls2.seqDelivery = 0; 1348 } else { 1349 /* Historical, setting sequential-delivery bit for SLI3 */ 1350 sp->cls2.seqDelivery = (sp->cls2.classValid) ? 1 : 0; 1351 sp->cls3.seqDelivery = (sp->cls3.classValid) ? 1 : 0; 1352 if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) { 1353 sp->cmn.request_multiple_Nport = 1; 1354 /* For FLOGI, Let FLOGI rsp set the NPortID for VPI 0 */ 1355 icmd->ulpCt_h = 1; 1356 icmd->ulpCt_l = 0; 1357 } else 1358 sp->cmn.request_multiple_Nport = 0; 1359 } 1360 1361 if (phba->fc_topology != LPFC_TOPOLOGY_LOOP) { 1362 icmd->un.elsreq64.myID = 0; 1363 icmd->un.elsreq64.fl = 1; 1364 } 1365 1366 tmo = phba->fc_ratov; 1367 phba->fc_ratov = LPFC_DISC_FLOGI_TMO; 1368 lpfc_set_disctmo(vport); 1369 phba->fc_ratov = tmo; 1370 1371 phba->fc_stat.elsXmitFLOGI++; 1372 elsiocb->iocb_cmpl = lpfc_cmpl_els_flogi; 1373 1374 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, 1375 "Issue FLOGI: opt:x%x", 1376 phba->sli3_options, 0, 0); 1377 1378 elsiocb->context1 = lpfc_nlp_get(ndlp); 1379 if (!elsiocb->context1) { 1380 lpfc_els_free_iocb(phba, elsiocb); 1381 return 1; 1382 } 1383 1384 rc = lpfc_issue_fabric_iocb(phba, elsiocb); 1385 if (rc == IOCB_ERROR) { 1386 lpfc_els_free_iocb(phba, elsiocb); 1387 lpfc_nlp_put(ndlp); 1388 return 1; 1389 } 1390 1391 phba->hba_flag |= (HBA_FLOGI_ISSUED | HBA_FLOGI_OUTSTANDING); 1392 1393 /* Check for a deferred FLOGI ACC condition */ 1394 if (phba->defer_flogi_acc_flag) { 1395 did = vport->fc_myDID; 1396 vport->fc_myDID = Fabric_DID; 1397 1398 memset(&defer_flogi_acc, 0, sizeof(struct lpfc_iocbq)); 1399 1400 defer_flogi_acc.iocb.ulpContext = phba->defer_flogi_acc_rx_id; 1401 defer_flogi_acc.iocb.unsli3.rcvsli3.ox_id = 1402 phba->defer_flogi_acc_ox_id; 1403 1404 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, 1405 "3354 Xmit deferred FLOGI ACC: rx_id: x%x," 1406 " ox_id: x%x, hba_flag x%x\n", 1407 phba->defer_flogi_acc_rx_id, 1408 phba->defer_flogi_acc_ox_id, phba->hba_flag); 1409 1410 /* Send deferred FLOGI ACC */ 1411 lpfc_els_rsp_acc(vport, ELS_CMD_FLOGI, &defer_flogi_acc, 1412 ndlp, NULL); 1413 1414 phba->defer_flogi_acc_flag = false; 1415 1416 vport->fc_myDID = did; 1417 } 1418 1419 return 0; 1420 } 1421 1422 /** 1423 * lpfc_els_abort_flogi - Abort all outstanding flogi iocbs 1424 * @phba: pointer to lpfc hba data structure. 1425 * 1426 * This routine aborts all the outstanding Fabric Login (FLOGI) IOCBs 1427 * with a @phba. This routine walks all the outstanding IOCBs on the txcmplq 1428 * list and issues an abort IOCB commond on each outstanding IOCB that 1429 * contains a active Fabric_DID ndlp. Note that this function is to issue 1430 * the abort IOCB command on all the outstanding IOCBs, thus when this 1431 * function returns, it does not guarantee all the IOCBs are actually aborted. 1432 * 1433 * Return code 1434 * 0 - Successfully issued abort iocb on all outstanding flogis (Always 0) 1435 **/ 1436 int 1437 lpfc_els_abort_flogi(struct lpfc_hba *phba) 1438 { 1439 struct lpfc_sli_ring *pring; 1440 struct lpfc_iocbq *iocb, *next_iocb; 1441 struct lpfc_nodelist *ndlp; 1442 IOCB_t *icmd; 1443 1444 /* Abort outstanding I/O on NPort <nlp_DID> */ 1445 lpfc_printf_log(phba, KERN_INFO, LOG_DISCOVERY, 1446 "0201 Abort outstanding I/O on NPort x%x\n", 1447 Fabric_DID); 1448 1449 pring = lpfc_phba_elsring(phba); 1450 if (unlikely(!pring)) 1451 return -EIO; 1452 1453 /* 1454 * Check the txcmplq for an iocb that matches the nport the driver is 1455 * searching for. 1456 */ 1457 spin_lock_irq(&phba->hbalock); 1458 list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq, list) { 1459 icmd = &iocb->iocb; 1460 if (icmd->ulpCommand == CMD_ELS_REQUEST64_CR) { 1461 ndlp = (struct lpfc_nodelist *)(iocb->context1); 1462 if (ndlp && ndlp->nlp_DID == Fabric_DID) { 1463 if ((phba->pport->fc_flag & FC_PT2PT) && 1464 !(phba->pport->fc_flag & FC_PT2PT_PLOGI)) 1465 iocb->fabric_iocb_cmpl = 1466 lpfc_ignore_els_cmpl; 1467 lpfc_sli_issue_abort_iotag(phba, pring, iocb, 1468 NULL); 1469 } 1470 } 1471 } 1472 /* Make sure HBA is alive */ 1473 lpfc_issue_hb_tmo(phba); 1474 1475 spin_unlock_irq(&phba->hbalock); 1476 1477 return 0; 1478 } 1479 1480 /** 1481 * lpfc_initial_flogi - Issue an initial fabric login for a vport 1482 * @vport: pointer to a host virtual N_Port data structure. 1483 * 1484 * This routine issues an initial Fabric Login (FLOGI) for the @vport 1485 * specified. It first searches the ndlp with the Fabric_DID (0xfffffe) from 1486 * the @vport's ndlp list. If no such ndlp found, it will create an ndlp and 1487 * put it into the @vport's ndlp list. If an inactive ndlp found on the list, 1488 * it will just be enabled and made active. The lpfc_issue_els_flogi() routine 1489 * is then invoked with the @vport and the ndlp to perform the FLOGI for the 1490 * @vport. 1491 * 1492 * Return code 1493 * 0 - failed to issue initial flogi for @vport 1494 * 1 - successfully issued initial flogi for @vport 1495 **/ 1496 int 1497 lpfc_initial_flogi(struct lpfc_vport *vport) 1498 { 1499 struct lpfc_nodelist *ndlp; 1500 1501 vport->port_state = LPFC_FLOGI; 1502 lpfc_set_disctmo(vport); 1503 1504 /* First look for the Fabric ndlp */ 1505 ndlp = lpfc_findnode_did(vport, Fabric_DID); 1506 if (!ndlp) { 1507 /* Cannot find existing Fabric ndlp, so allocate a new one */ 1508 ndlp = lpfc_nlp_init(vport, Fabric_DID); 1509 if (!ndlp) 1510 return 0; 1511 /* Set the node type */ 1512 ndlp->nlp_type |= NLP_FABRIC; 1513 1514 /* Put ndlp onto node list */ 1515 lpfc_enqueue_node(vport, ndlp); 1516 } 1517 1518 if (lpfc_issue_els_flogi(vport, ndlp, 0)) { 1519 /* This decrement of reference count to node shall kick off 1520 * the release of the node. 1521 */ 1522 lpfc_nlp_put(ndlp); 1523 return 0; 1524 } 1525 return 1; 1526 } 1527 1528 /** 1529 * lpfc_initial_fdisc - Issue an initial fabric discovery for a vport 1530 * @vport: pointer to a host virtual N_Port data structure. 1531 * 1532 * This routine issues an initial Fabric Discover (FDISC) for the @vport 1533 * specified. It first searches the ndlp with the Fabric_DID (0xfffffe) from 1534 * the @vport's ndlp list. If no such ndlp found, it will create an ndlp and 1535 * put it into the @vport's ndlp list. If an inactive ndlp found on the list, 1536 * it will just be enabled and made active. The lpfc_issue_els_fdisc() routine 1537 * is then invoked with the @vport and the ndlp to perform the FDISC for the 1538 * @vport. 1539 * 1540 * Return code 1541 * 0 - failed to issue initial fdisc for @vport 1542 * 1 - successfully issued initial fdisc for @vport 1543 **/ 1544 int 1545 lpfc_initial_fdisc(struct lpfc_vport *vport) 1546 { 1547 struct lpfc_nodelist *ndlp; 1548 1549 /* First look for the Fabric ndlp */ 1550 ndlp = lpfc_findnode_did(vport, Fabric_DID); 1551 if (!ndlp) { 1552 /* Cannot find existing Fabric ndlp, so allocate a new one */ 1553 ndlp = lpfc_nlp_init(vport, Fabric_DID); 1554 if (!ndlp) 1555 return 0; 1556 1557 /* NPIV is only supported in Fabrics. */ 1558 ndlp->nlp_type |= NLP_FABRIC; 1559 1560 /* Put ndlp onto node list */ 1561 lpfc_enqueue_node(vport, ndlp); 1562 } 1563 1564 if (lpfc_issue_els_fdisc(vport, ndlp, 0)) { 1565 /* decrement node reference count to trigger the release of 1566 * the node. 1567 */ 1568 lpfc_nlp_put(ndlp); 1569 return 0; 1570 } 1571 return 1; 1572 } 1573 1574 /** 1575 * lpfc_more_plogi - Check and issue remaining plogis for a vport 1576 * @vport: pointer to a host virtual N_Port data structure. 1577 * 1578 * This routine checks whether there are more remaining Port Logins 1579 * (PLOGI) to be issued for the @vport. If so, it will invoke the routine 1580 * lpfc_els_disc_plogi() to go through the Node Port Recovery (NPR) nodes 1581 * to issue ELS PLOGIs up to the configured discover threads with the 1582 * @vport (@vport->cfg_discovery_threads). The function also decrement 1583 * the @vport's num_disc_node by 1 if it is not already 0. 1584 **/ 1585 void 1586 lpfc_more_plogi(struct lpfc_vport *vport) 1587 { 1588 if (vport->num_disc_nodes) 1589 vport->num_disc_nodes--; 1590 1591 /* Continue discovery with <num_disc_nodes> PLOGIs to go */ 1592 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, 1593 "0232 Continue discovery with %d PLOGIs to go " 1594 "Data: x%x x%x x%x\n", 1595 vport->num_disc_nodes, vport->fc_plogi_cnt, 1596 vport->fc_flag, vport->port_state); 1597 /* Check to see if there are more PLOGIs to be sent */ 1598 if (vport->fc_flag & FC_NLP_MORE) 1599 /* go thru NPR nodes and issue any remaining ELS PLOGIs */ 1600 lpfc_els_disc_plogi(vport); 1601 1602 return; 1603 } 1604 1605 /** 1606 * lpfc_plogi_confirm_nport - Confirm plogi wwpn matches stored ndlp 1607 * @phba: pointer to lpfc hba data structure. 1608 * @prsp: pointer to response IOCB payload. 1609 * @ndlp: pointer to a node-list data structure. 1610 * 1611 * This routine checks and indicates whether the WWPN of an N_Port, retrieved 1612 * from a PLOGI, matches the WWPN that is stored in the @ndlp for that N_POrt. 1613 * The following cases are considered N_Port confirmed: 1614 * 1) The N_Port is a Fabric ndlp; 2) The @ndlp is on vport list and matches 1615 * the WWPN of the N_Port logged into; 3) The @ndlp is not on vport list but 1616 * it does not have WWPN assigned either. If the WWPN is confirmed, the 1617 * pointer to the @ndlp will be returned. If the WWPN is not confirmed: 1618 * 1) if there is a node on vport list other than the @ndlp with the same 1619 * WWPN of the N_Port PLOGI logged into, the lpfc_unreg_rpi() will be invoked 1620 * on that node to release the RPI associated with the node; 2) if there is 1621 * no node found on vport list with the same WWPN of the N_Port PLOGI logged 1622 * into, a new node shall be allocated (or activated). In either case, the 1623 * parameters of the @ndlp shall be copied to the new_ndlp, the @ndlp shall 1624 * be released and the new_ndlp shall be put on to the vport node list and 1625 * its pointer returned as the confirmed node. 1626 * 1627 * Note that before the @ndlp got "released", the keepDID from not-matching 1628 * or inactive "new_ndlp" on the vport node list is assigned to the nlp_DID 1629 * of the @ndlp. This is because the release of @ndlp is actually to put it 1630 * into an inactive state on the vport node list and the vport node list 1631 * management algorithm does not allow two node with a same DID. 1632 * 1633 * Return code 1634 * pointer to the PLOGI N_Port @ndlp 1635 **/ 1636 static struct lpfc_nodelist * 1637 lpfc_plogi_confirm_nport(struct lpfc_hba *phba, uint32_t *prsp, 1638 struct lpfc_nodelist *ndlp) 1639 { 1640 struct lpfc_vport *vport = ndlp->vport; 1641 struct lpfc_nodelist *new_ndlp; 1642 struct serv_parm *sp; 1643 uint8_t name[sizeof(struct lpfc_name)]; 1644 uint32_t keepDID = 0, keep_nlp_flag = 0; 1645 uint32_t keep_new_nlp_flag = 0; 1646 uint16_t keep_nlp_state; 1647 u32 keep_nlp_fc4_type = 0; 1648 struct lpfc_nvme_rport *keep_nrport = NULL; 1649 unsigned long *active_rrqs_xri_bitmap = NULL; 1650 1651 /* Fabric nodes can have the same WWPN so we don't bother searching 1652 * by WWPN. Just return the ndlp that was given to us. 1653 */ 1654 if (ndlp->nlp_type & NLP_FABRIC) 1655 return ndlp; 1656 1657 sp = (struct serv_parm *) ((uint8_t *) prsp + sizeof(uint32_t)); 1658 memset(name, 0, sizeof(struct lpfc_name)); 1659 1660 /* Now we find out if the NPort we are logging into, matches the WWPN 1661 * we have for that ndlp. If not, we have some work to do. 1662 */ 1663 new_ndlp = lpfc_findnode_wwpn(vport, &sp->portName); 1664 1665 /* return immediately if the WWPN matches ndlp */ 1666 if (!new_ndlp || (new_ndlp == ndlp)) 1667 return ndlp; 1668 1669 /* 1670 * Unregister from backend if not done yet. Could have been skipped 1671 * due to ADISC 1672 */ 1673 lpfc_nlp_unreg_node(vport, new_ndlp); 1674 1675 if (phba->sli_rev == LPFC_SLI_REV4) { 1676 active_rrqs_xri_bitmap = mempool_alloc(phba->active_rrq_pool, 1677 GFP_KERNEL); 1678 if (active_rrqs_xri_bitmap) 1679 memset(active_rrqs_xri_bitmap, 0, 1680 phba->cfg_rrq_xri_bitmap_sz); 1681 } 1682 1683 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS | LOG_NODE, 1684 "3178 PLOGI confirm: ndlp x%x x%x x%x: " 1685 "new_ndlp x%x x%x x%x\n", 1686 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_fc4_type, 1687 (new_ndlp ? new_ndlp->nlp_DID : 0), 1688 (new_ndlp ? new_ndlp->nlp_flag : 0), 1689 (new_ndlp ? new_ndlp->nlp_fc4_type : 0)); 1690 1691 keepDID = new_ndlp->nlp_DID; 1692 1693 if (phba->sli_rev == LPFC_SLI_REV4 && active_rrqs_xri_bitmap) 1694 memcpy(active_rrqs_xri_bitmap, new_ndlp->active_rrqs_xri_bitmap, 1695 phba->cfg_rrq_xri_bitmap_sz); 1696 1697 /* At this point in this routine, we know new_ndlp will be 1698 * returned. however, any previous GID_FTs that were done 1699 * would have updated nlp_fc4_type in ndlp, so we must ensure 1700 * new_ndlp has the right value. 1701 */ 1702 if (vport->fc_flag & FC_FABRIC) { 1703 keep_nlp_fc4_type = new_ndlp->nlp_fc4_type; 1704 new_ndlp->nlp_fc4_type = ndlp->nlp_fc4_type; 1705 } 1706 1707 lpfc_unreg_rpi(vport, new_ndlp); 1708 new_ndlp->nlp_DID = ndlp->nlp_DID; 1709 new_ndlp->nlp_prev_state = ndlp->nlp_prev_state; 1710 if (phba->sli_rev == LPFC_SLI_REV4) 1711 memcpy(new_ndlp->active_rrqs_xri_bitmap, 1712 ndlp->active_rrqs_xri_bitmap, 1713 phba->cfg_rrq_xri_bitmap_sz); 1714 1715 /* Lock both ndlps */ 1716 spin_lock_irq(&ndlp->lock); 1717 spin_lock_irq(&new_ndlp->lock); 1718 keep_new_nlp_flag = new_ndlp->nlp_flag; 1719 keep_nlp_flag = ndlp->nlp_flag; 1720 new_ndlp->nlp_flag = ndlp->nlp_flag; 1721 1722 /* if new_ndlp had NLP_UNREG_INP set, keep it */ 1723 if (keep_new_nlp_flag & NLP_UNREG_INP) 1724 new_ndlp->nlp_flag |= NLP_UNREG_INP; 1725 else 1726 new_ndlp->nlp_flag &= ~NLP_UNREG_INP; 1727 1728 /* if new_ndlp had NLP_RPI_REGISTERED set, keep it */ 1729 if (keep_new_nlp_flag & NLP_RPI_REGISTERED) 1730 new_ndlp->nlp_flag |= NLP_RPI_REGISTERED; 1731 else 1732 new_ndlp->nlp_flag &= ~NLP_RPI_REGISTERED; 1733 1734 /* 1735 * Retain the DROPPED flag. This will take care of the init 1736 * refcount when affecting the state change 1737 */ 1738 if (keep_new_nlp_flag & NLP_DROPPED) 1739 new_ndlp->nlp_flag |= NLP_DROPPED; 1740 else 1741 new_ndlp->nlp_flag &= ~NLP_DROPPED; 1742 1743 ndlp->nlp_flag = keep_new_nlp_flag; 1744 1745 /* if ndlp had NLP_UNREG_INP set, keep it */ 1746 if (keep_nlp_flag & NLP_UNREG_INP) 1747 ndlp->nlp_flag |= NLP_UNREG_INP; 1748 else 1749 ndlp->nlp_flag &= ~NLP_UNREG_INP; 1750 1751 /* if ndlp had NLP_RPI_REGISTERED set, keep it */ 1752 if (keep_nlp_flag & NLP_RPI_REGISTERED) 1753 ndlp->nlp_flag |= NLP_RPI_REGISTERED; 1754 else 1755 ndlp->nlp_flag &= ~NLP_RPI_REGISTERED; 1756 1757 /* 1758 * Retain the DROPPED flag. This will take care of the init 1759 * refcount when affecting the state change 1760 */ 1761 if (keep_nlp_flag & NLP_DROPPED) 1762 ndlp->nlp_flag |= NLP_DROPPED; 1763 else 1764 ndlp->nlp_flag &= ~NLP_DROPPED; 1765 1766 spin_unlock_irq(&new_ndlp->lock); 1767 spin_unlock_irq(&ndlp->lock); 1768 1769 /* Set nlp_states accordingly */ 1770 keep_nlp_state = new_ndlp->nlp_state; 1771 lpfc_nlp_set_state(vport, new_ndlp, ndlp->nlp_state); 1772 1773 /* interchange the nvme remoteport structs */ 1774 keep_nrport = new_ndlp->nrport; 1775 new_ndlp->nrport = ndlp->nrport; 1776 1777 /* Move this back to NPR state */ 1778 if (memcmp(&ndlp->nlp_portname, name, sizeof(struct lpfc_name)) == 0) { 1779 /* The new_ndlp is replacing ndlp totally, so we need 1780 * to put ndlp on UNUSED list and try to free it. 1781 */ 1782 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, 1783 "3179 PLOGI confirm NEW: %x %x\n", 1784 new_ndlp->nlp_DID, keepDID); 1785 1786 /* Two ndlps cannot have the same did on the nodelist. 1787 * Note: for this case, ndlp has a NULL WWPN so setting 1788 * the nlp_fc4_type isn't required. 1789 */ 1790 ndlp->nlp_DID = keepDID; 1791 lpfc_nlp_set_state(vport, ndlp, keep_nlp_state); 1792 if (phba->sli_rev == LPFC_SLI_REV4 && 1793 active_rrqs_xri_bitmap) 1794 memcpy(ndlp->active_rrqs_xri_bitmap, 1795 active_rrqs_xri_bitmap, 1796 phba->cfg_rrq_xri_bitmap_sz); 1797 1798 } else { 1799 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, 1800 "3180 PLOGI confirm SWAP: %x %x\n", 1801 new_ndlp->nlp_DID, keepDID); 1802 1803 lpfc_unreg_rpi(vport, ndlp); 1804 1805 /* Two ndlps cannot have the same did and the fc4 1806 * type must be transferred because the ndlp is in 1807 * flight. 1808 */ 1809 ndlp->nlp_DID = keepDID; 1810 ndlp->nlp_fc4_type = keep_nlp_fc4_type; 1811 1812 if (phba->sli_rev == LPFC_SLI_REV4 && 1813 active_rrqs_xri_bitmap) 1814 memcpy(ndlp->active_rrqs_xri_bitmap, 1815 active_rrqs_xri_bitmap, 1816 phba->cfg_rrq_xri_bitmap_sz); 1817 1818 /* Since we are switching over to the new_ndlp, 1819 * reset the old ndlp state 1820 */ 1821 if ((ndlp->nlp_state == NLP_STE_UNMAPPED_NODE) || 1822 (ndlp->nlp_state == NLP_STE_MAPPED_NODE)) 1823 keep_nlp_state = NLP_STE_NPR_NODE; 1824 lpfc_nlp_set_state(vport, ndlp, keep_nlp_state); 1825 ndlp->nrport = keep_nrport; 1826 } 1827 1828 /* 1829 * If ndlp is not associated with any rport we can drop it here else 1830 * let dev_loss_tmo_callbk trigger DEVICE_RM event 1831 */ 1832 if (!ndlp->rport && (ndlp->nlp_state == NLP_STE_NPR_NODE)) 1833 lpfc_disc_state_machine(vport, ndlp, NULL, NLP_EVT_DEVICE_RM); 1834 1835 if (phba->sli_rev == LPFC_SLI_REV4 && 1836 active_rrqs_xri_bitmap) 1837 mempool_free(active_rrqs_xri_bitmap, 1838 phba->active_rrq_pool); 1839 1840 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS | LOG_NODE, 1841 "3173 PLOGI confirm exit: new_ndlp x%x x%x x%x\n", 1842 new_ndlp->nlp_DID, new_ndlp->nlp_flag, 1843 new_ndlp->nlp_fc4_type); 1844 1845 return new_ndlp; 1846 } 1847 1848 /** 1849 * lpfc_end_rscn - Check and handle more rscn for a vport 1850 * @vport: pointer to a host virtual N_Port data structure. 1851 * 1852 * This routine checks whether more Registration State Change 1853 * Notifications (RSCNs) came in while the discovery state machine was in 1854 * the FC_RSCN_MODE. If so, the lpfc_els_handle_rscn() routine will be 1855 * invoked to handle the additional RSCNs for the @vport. Otherwise, the 1856 * FC_RSCN_MODE bit will be cleared with the @vport to mark as the end of 1857 * handling the RSCNs. 1858 **/ 1859 void 1860 lpfc_end_rscn(struct lpfc_vport *vport) 1861 { 1862 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 1863 1864 if (vport->fc_flag & FC_RSCN_MODE) { 1865 /* 1866 * Check to see if more RSCNs came in while we were 1867 * processing this one. 1868 */ 1869 if (vport->fc_rscn_id_cnt || 1870 (vport->fc_flag & FC_RSCN_DISCOVERY) != 0) 1871 lpfc_els_handle_rscn(vport); 1872 else { 1873 spin_lock_irq(shost->host_lock); 1874 vport->fc_flag &= ~FC_RSCN_MODE; 1875 spin_unlock_irq(shost->host_lock); 1876 } 1877 } 1878 } 1879 1880 /** 1881 * lpfc_cmpl_els_rrq - Completion handled for els RRQs. 1882 * @phba: pointer to lpfc hba data structure. 1883 * @cmdiocb: pointer to lpfc command iocb data structure. 1884 * @rspiocb: pointer to lpfc response iocb data structure. 1885 * 1886 * This routine will call the clear rrq function to free the rrq and 1887 * clear the xri's bit in the ndlp's xri_bitmap. If the ndlp does not 1888 * exist then the clear_rrq is still called because the rrq needs to 1889 * be freed. 1890 **/ 1891 1892 static void 1893 lpfc_cmpl_els_rrq(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb, 1894 struct lpfc_iocbq *rspiocb) 1895 { 1896 struct lpfc_vport *vport = cmdiocb->vport; 1897 IOCB_t *irsp; 1898 struct lpfc_nodelist *ndlp = cmdiocb->context1; 1899 struct lpfc_node_rrq *rrq; 1900 1901 /* we pass cmdiocb to state machine which needs rspiocb as well */ 1902 rrq = cmdiocb->context_un.rrq; 1903 cmdiocb->context_un.rsp_iocb = rspiocb; 1904 1905 irsp = &rspiocb->iocb; 1906 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, 1907 "RRQ cmpl: status:x%x/x%x did:x%x", 1908 irsp->ulpStatus, irsp->un.ulpWord[4], 1909 irsp->un.elsreq64.remoteID); 1910 1911 /* rrq completes to NPort <nlp_DID> */ 1912 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, 1913 "2880 RRQ completes to DID x%x " 1914 "Data: x%x x%x x%x x%x x%x\n", 1915 irsp->un.elsreq64.remoteID, 1916 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_TRACE_EVENT, 1927 "2881 RRQ failure DID:%06X Status:" 1928 "x%x/x%x\n", 1929 ndlp->nlp_DID, irsp->ulpStatus, 1930 irsp->un.ulpWord[4]); 1931 } 1932 1933 lpfc_clr_rrq_active(phba, rrq->xritag, rrq); 1934 lpfc_els_free_iocb(phba, cmdiocb); 1935 lpfc_nlp_put(ndlp); 1936 return; 1937 } 1938 /** 1939 * lpfc_cmpl_els_plogi - Completion callback function for plogi 1940 * @phba: pointer to lpfc hba data structure. 1941 * @cmdiocb: pointer to lpfc command iocb data structure. 1942 * @rspiocb: pointer to lpfc response iocb data structure. 1943 * 1944 * This routine is the completion callback function for issuing the Port 1945 * Login (PLOGI) command. For PLOGI completion, there must be an active 1946 * ndlp on the vport node list that matches the remote node ID from the 1947 * PLOGI response IOCB. If such ndlp does not exist, the PLOGI is simply 1948 * ignored and command IOCB released. The PLOGI response IOCB status is 1949 * checked for error conditions. If there is error status reported, PLOGI 1950 * retry shall be attempted by invoking the lpfc_els_retry() routine. 1951 * Otherwise, the lpfc_plogi_confirm_nport() routine shall be invoked on 1952 * the ndlp and the NLP_EVT_CMPL_PLOGI state to the Discover State Machine 1953 * (DSM) is set for this PLOGI completion. Finally, it checks whether 1954 * there are additional N_Port nodes with the vport that need to perform 1955 * PLOGI. If so, the lpfc_more_plogi() routine is invoked to issue addition 1956 * PLOGIs. 1957 **/ 1958 static void 1959 lpfc_cmpl_els_plogi(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb, 1960 struct lpfc_iocbq *rspiocb) 1961 { 1962 struct lpfc_vport *vport = cmdiocb->vport; 1963 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 1964 IOCB_t *irsp; 1965 struct lpfc_nodelist *ndlp, *free_ndlp; 1966 struct lpfc_dmabuf *prsp; 1967 int disc; 1968 struct serv_parm *sp = NULL; 1969 1970 /* we pass cmdiocb to state machine which needs rspiocb as well */ 1971 cmdiocb->context_un.rsp_iocb = rspiocb; 1972 1973 irsp = &rspiocb->iocb; 1974 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, 1975 "PLOGI cmpl: status:x%x/x%x did:x%x", 1976 irsp->ulpStatus, irsp->un.ulpWord[4], 1977 irsp->un.elsreq64.remoteID); 1978 1979 ndlp = lpfc_findnode_did(vport, irsp->un.elsreq64.remoteID); 1980 if (!ndlp) { 1981 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 1982 "0136 PLOGI completes to NPort x%x " 1983 "with no ndlp. Data: x%x x%x x%x\n", 1984 irsp->un.elsreq64.remoteID, 1985 irsp->ulpStatus, irsp->un.ulpWord[4], 1986 irsp->ulpIoTag); 1987 goto out_freeiocb; 1988 } 1989 1990 /* Since ndlp can be freed in the disc state machine, note if this node 1991 * is being used during discovery. 1992 */ 1993 spin_lock_irq(&ndlp->lock); 1994 disc = (ndlp->nlp_flag & NLP_NPR_2B_DISC); 1995 ndlp->nlp_flag &= ~NLP_NPR_2B_DISC; 1996 spin_unlock_irq(&ndlp->lock); 1997 1998 /* PLOGI completes to NPort <nlp_DID> */ 1999 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, 2000 "0102 PLOGI completes to NPort x%06x " 2001 "Data: x%x x%x x%x x%x x%x\n", 2002 ndlp->nlp_DID, ndlp->nlp_fc4_type, 2003 irsp->ulpStatus, irsp->un.ulpWord[4], 2004 disc, vport->num_disc_nodes); 2005 2006 /* Check to see if link went down during discovery */ 2007 if (lpfc_els_chk_latt(vport)) { 2008 spin_lock_irq(&ndlp->lock); 2009 ndlp->nlp_flag |= NLP_NPR_2B_DISC; 2010 spin_unlock_irq(&ndlp->lock); 2011 goto out; 2012 } 2013 2014 if (irsp->ulpStatus) { 2015 /* Check for retry */ 2016 if (lpfc_els_retry(phba, cmdiocb, rspiocb)) { 2017 /* ELS command is being retried */ 2018 if (disc) { 2019 spin_lock_irq(&ndlp->lock); 2020 ndlp->nlp_flag |= NLP_NPR_2B_DISC; 2021 spin_unlock_irq(&ndlp->lock); 2022 } 2023 goto out; 2024 } 2025 /* PLOGI failed Don't print the vport to vport rjts */ 2026 if (irsp->ulpStatus != IOSTAT_LS_RJT || 2027 (((irsp->un.ulpWord[4]) >> 16 != LSRJT_INVALID_CMD) && 2028 ((irsp->un.ulpWord[4]) >> 16 != LSRJT_UNABLE_TPC)) || 2029 (phba)->pport->cfg_log_verbose & LOG_ELS) 2030 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 2031 "2753 PLOGI failure DID:%06X Status:x%x/x%x\n", 2032 ndlp->nlp_DID, irsp->ulpStatus, 2033 irsp->un.ulpWord[4]); 2034 2035 /* Do not call DSM for lpfc_els_abort'ed ELS cmds */ 2036 if (!lpfc_error_lost_link(irsp)) 2037 lpfc_disc_state_machine(vport, ndlp, cmdiocb, 2038 NLP_EVT_CMPL_PLOGI); 2039 2040 /* If a PLOGI collision occurred, the node needs to continue 2041 * with the reglogin process. 2042 */ 2043 spin_lock_irq(&ndlp->lock); 2044 if ((ndlp->nlp_flag & (NLP_ACC_REGLOGIN | NLP_RCV_PLOGI)) && 2045 ndlp->nlp_state == NLP_STE_REG_LOGIN_ISSUE) { 2046 spin_unlock_irq(&ndlp->lock); 2047 goto out; 2048 } 2049 spin_unlock_irq(&ndlp->lock); 2050 2051 /* No PLOGI collision and the node is not registered with the 2052 * scsi or nvme transport. It is no longer an active node. Just 2053 * start the device remove process. 2054 */ 2055 if (!(ndlp->fc4_xpt_flags & (SCSI_XPT_REGD | NVME_XPT_REGD))) { 2056 spin_lock_irq(&ndlp->lock); 2057 ndlp->nlp_flag &= ~NLP_NPR_2B_DISC; 2058 spin_unlock_irq(&ndlp->lock); 2059 lpfc_disc_state_machine(vport, ndlp, cmdiocb, 2060 NLP_EVT_DEVICE_RM); 2061 } 2062 } else { 2063 /* Good status, call state machine */ 2064 prsp = list_entry(((struct lpfc_dmabuf *) 2065 cmdiocb->context2)->list.next, 2066 struct lpfc_dmabuf, list); 2067 ndlp = lpfc_plogi_confirm_nport(phba, prsp->virt, ndlp); 2068 2069 sp = (struct serv_parm *)((u8 *)prsp->virt + 2070 sizeof(u32)); 2071 2072 ndlp->vmid_support = 0; 2073 if ((phba->cfg_vmid_app_header && sp->cmn.app_hdr_support) || 2074 (phba->cfg_vmid_priority_tagging && 2075 sp->cmn.priority_tagging)) { 2076 lpfc_printf_log(phba, KERN_DEBUG, LOG_ELS, 2077 "4018 app_hdr_support %d tagging %d DID x%x\n", 2078 sp->cmn.app_hdr_support, 2079 sp->cmn.priority_tagging, 2080 ndlp->nlp_DID); 2081 /* if the dest port supports VMID, mark it in ndlp */ 2082 ndlp->vmid_support = 1; 2083 } 2084 2085 lpfc_disc_state_machine(vport, ndlp, cmdiocb, 2086 NLP_EVT_CMPL_PLOGI); 2087 } 2088 2089 if (disc && vport->num_disc_nodes) { 2090 /* Check to see if there are more PLOGIs to be sent */ 2091 lpfc_more_plogi(vport); 2092 2093 if (vport->num_disc_nodes == 0) { 2094 spin_lock_irq(shost->host_lock); 2095 vport->fc_flag &= ~FC_NDISC_ACTIVE; 2096 spin_unlock_irq(shost->host_lock); 2097 2098 lpfc_can_disctmo(vport); 2099 lpfc_end_rscn(vport); 2100 } 2101 } 2102 2103 out: 2104 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE, 2105 "PLOGI Cmpl PUT: did:x%x refcnt %d", 2106 ndlp->nlp_DID, kref_read(&ndlp->kref), 0); 2107 2108 out_freeiocb: 2109 /* Release the reference on the original I/O request. */ 2110 free_ndlp = (struct lpfc_nodelist *)cmdiocb->context1; 2111 2112 lpfc_els_free_iocb(phba, cmdiocb); 2113 lpfc_nlp_put(free_ndlp); 2114 return; 2115 } 2116 2117 /** 2118 * lpfc_issue_els_plogi - Issue an plogi iocb command for a vport 2119 * @vport: pointer to a host virtual N_Port data structure. 2120 * @did: destination port identifier. 2121 * @retry: number of retries to the command IOCB. 2122 * 2123 * This routine issues a Port Login (PLOGI) command to a remote N_Port 2124 * (with the @did) for a @vport. Before issuing a PLOGI to a remote N_Port, 2125 * the ndlp with the remote N_Port DID must exist on the @vport's ndlp list. 2126 * This routine constructs the proper fields of the PLOGI IOCB and invokes 2127 * the lpfc_sli_issue_iocb() routine to send out PLOGI ELS command. 2128 * 2129 * Note that the ndlp reference count will be incremented by 1 for holding 2130 * the ndlp and the reference to ndlp will be stored into the context1 field 2131 * of the IOCB for the completion callback function to the PLOGI ELS command. 2132 * 2133 * Return code 2134 * 0 - Successfully issued a plogi for @vport 2135 * 1 - failed to issue a plogi for @vport 2136 **/ 2137 int 2138 lpfc_issue_els_plogi(struct lpfc_vport *vport, uint32_t did, uint8_t retry) 2139 { 2140 struct lpfc_hba *phba = vport->phba; 2141 struct serv_parm *sp; 2142 struct lpfc_nodelist *ndlp; 2143 struct lpfc_iocbq *elsiocb; 2144 uint8_t *pcmd; 2145 uint16_t cmdsize; 2146 int ret; 2147 2148 ndlp = lpfc_findnode_did(vport, did); 2149 if (!ndlp) 2150 return 1; 2151 2152 /* Defer the processing of the issue PLOGI until after the 2153 * outstanding UNREG_RPI mbox command completes, unless we 2154 * are going offline. This logic does not apply for Fabric DIDs 2155 */ 2156 if ((ndlp->nlp_flag & NLP_UNREG_INP) && 2157 ((ndlp->nlp_DID & Fabric_DID_MASK) != Fabric_DID_MASK) && 2158 !(vport->fc_flag & FC_OFFLINE_MODE)) { 2159 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, 2160 "4110 Issue PLOGI x%x deferred " 2161 "on NPort x%x rpi x%x Data: x%px\n", 2162 ndlp->nlp_defer_did, ndlp->nlp_DID, 2163 ndlp->nlp_rpi, ndlp); 2164 2165 /* We can only defer 1st PLOGI */ 2166 if (ndlp->nlp_defer_did == NLP_EVT_NOTHING_PENDING) 2167 ndlp->nlp_defer_did = did; 2168 return 0; 2169 } 2170 2171 cmdsize = (sizeof(uint32_t) + sizeof(struct serv_parm)); 2172 elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp, did, 2173 ELS_CMD_PLOGI); 2174 if (!elsiocb) 2175 return 1; 2176 2177 spin_lock_irq(&ndlp->lock); 2178 ndlp->nlp_flag &= ~NLP_FCP_PRLI_RJT; 2179 spin_unlock_irq(&ndlp->lock); 2180 2181 pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt); 2182 2183 /* For PLOGI request, remainder of payload is service parameters */ 2184 *((uint32_t *) (pcmd)) = ELS_CMD_PLOGI; 2185 pcmd += sizeof(uint32_t); 2186 memcpy(pcmd, &vport->fc_sparam, sizeof(struct serv_parm)); 2187 sp = (struct serv_parm *) pcmd; 2188 2189 /* 2190 * If we are a N-port connected to a Fabric, fix-up paramm's so logins 2191 * to device on remote loops work. 2192 */ 2193 if ((vport->fc_flag & FC_FABRIC) && !(vport->fc_flag & FC_PUBLIC_LOOP)) 2194 sp->cmn.altBbCredit = 1; 2195 2196 if (sp->cmn.fcphLow < FC_PH_4_3) 2197 sp->cmn.fcphLow = FC_PH_4_3; 2198 2199 if (sp->cmn.fcphHigh < FC_PH3) 2200 sp->cmn.fcphHigh = FC_PH3; 2201 2202 sp->cmn.valid_vendor_ver_level = 0; 2203 memset(sp->un.vendorVersion, 0, sizeof(sp->un.vendorVersion)); 2204 sp->cmn.bbRcvSizeMsb &= 0xF; 2205 2206 /* Check if the destination port supports VMID */ 2207 ndlp->vmid_support = 0; 2208 if (vport->vmid_priority_tagging) 2209 sp->cmn.priority_tagging = 1; 2210 else if (phba->cfg_vmid_app_header && 2211 bf_get(lpfc_ftr_ashdr, &phba->sli4_hba.sli4_flags)) 2212 sp->cmn.app_hdr_support = 1; 2213 2214 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, 2215 "Issue PLOGI: did:x%x", 2216 did, 0, 0); 2217 2218 /* If our firmware supports this feature, convey that 2219 * information to the target using the vendor specific field. 2220 */ 2221 if (phba->sli.sli_flag & LPFC_SLI_SUPPRESS_RSP) { 2222 sp->cmn.valid_vendor_ver_level = 1; 2223 sp->un.vv.vid = cpu_to_be32(LPFC_VV_EMLX_ID); 2224 sp->un.vv.flags = cpu_to_be32(LPFC_VV_SUPPRESS_RSP); 2225 } 2226 2227 phba->fc_stat.elsXmitPLOGI++; 2228 elsiocb->iocb_cmpl = lpfc_cmpl_els_plogi; 2229 2230 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, 2231 "Issue PLOGI: did:x%x refcnt %d", 2232 did, kref_read(&ndlp->kref), 0); 2233 elsiocb->context1 = lpfc_nlp_get(ndlp); 2234 if (!elsiocb->context1) { 2235 lpfc_els_free_iocb(phba, elsiocb); 2236 return 1; 2237 } 2238 2239 ret = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0); 2240 if (ret) { 2241 lpfc_els_free_iocb(phba, elsiocb); 2242 lpfc_nlp_put(ndlp); 2243 return 1; 2244 } 2245 2246 return 0; 2247 } 2248 2249 /** 2250 * lpfc_cmpl_els_prli - Completion callback function for prli 2251 * @phba: pointer to lpfc hba data structure. 2252 * @cmdiocb: pointer to lpfc command iocb data structure. 2253 * @rspiocb: pointer to lpfc response iocb data structure. 2254 * 2255 * This routine is the completion callback function for a Process Login 2256 * (PRLI) ELS command. The PRLI response IOCB status is checked for error 2257 * status. If there is error status reported, PRLI retry shall be attempted 2258 * by invoking the lpfc_els_retry() routine. Otherwise, the state 2259 * NLP_EVT_CMPL_PRLI is sent to the Discover State Machine (DSM) for this 2260 * ndlp to mark the PRLI completion. 2261 **/ 2262 static void 2263 lpfc_cmpl_els_prli(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb, 2264 struct lpfc_iocbq *rspiocb) 2265 { 2266 struct lpfc_vport *vport = cmdiocb->vport; 2267 IOCB_t *irsp; 2268 struct lpfc_nodelist *ndlp; 2269 char *mode; 2270 u32 loglevel; 2271 2272 /* we pass cmdiocb to state machine which needs rspiocb as well */ 2273 cmdiocb->context_un.rsp_iocb = rspiocb; 2274 2275 irsp = &(rspiocb->iocb); 2276 ndlp = (struct lpfc_nodelist *) cmdiocb->context1; 2277 spin_lock_irq(&ndlp->lock); 2278 ndlp->nlp_flag &= ~NLP_PRLI_SND; 2279 2280 /* Driver supports multiple FC4 types. Counters matter. */ 2281 vport->fc_prli_sent--; 2282 ndlp->fc4_prli_sent--; 2283 spin_unlock_irq(&ndlp->lock); 2284 2285 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, 2286 "PRLI cmpl: status:x%x/x%x did:x%x", 2287 irsp->ulpStatus, irsp->un.ulpWord[4], 2288 ndlp->nlp_DID); 2289 2290 /* PRLI completes to NPort <nlp_DID> */ 2291 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, 2292 "0103 PRLI completes to NPort x%06x " 2293 "Data: x%x x%x x%x x%x\n", 2294 ndlp->nlp_DID, irsp->ulpStatus, irsp->un.ulpWord[4], 2295 vport->num_disc_nodes, ndlp->fc4_prli_sent); 2296 2297 /* Check to see if link went down during discovery */ 2298 if (lpfc_els_chk_latt(vport)) 2299 goto out; 2300 2301 if (irsp->ulpStatus) { 2302 /* Check for retry */ 2303 if (lpfc_els_retry(phba, cmdiocb, rspiocb)) { 2304 /* ELS command is being retried */ 2305 goto out; 2306 } 2307 2308 /* If we don't send GFT_ID to Fabric, a PRLI error 2309 * could be expected. 2310 */ 2311 if ((vport->fc_flag & FC_FABRIC) || 2312 (vport->cfg_enable_fc4_type != LPFC_ENABLE_BOTH)) { 2313 mode = KERN_ERR; 2314 loglevel = LOG_TRACE_EVENT; 2315 } else { 2316 mode = KERN_INFO; 2317 loglevel = LOG_ELS; 2318 } 2319 2320 /* PRLI failed */ 2321 lpfc_printf_vlog(vport, mode, loglevel, 2322 "2754 PRLI failure DID:%06X Status:x%x/x%x, " 2323 "data: x%x\n", 2324 ndlp->nlp_DID, irsp->ulpStatus, 2325 irsp->un.ulpWord[4], ndlp->fc4_prli_sent); 2326 2327 /* Do not call DSM for lpfc_els_abort'ed ELS cmds */ 2328 if (!lpfc_error_lost_link(irsp)) 2329 lpfc_disc_state_machine(vport, ndlp, cmdiocb, 2330 NLP_EVT_CMPL_PRLI); 2331 2332 /* 2333 * For P2P topology, retain the node so that PLOGI can be 2334 * attempted on it again. 2335 */ 2336 if (vport->fc_flag & FC_PT2PT) 2337 goto out; 2338 2339 /* As long as this node is not registered with the SCSI 2340 * or NVMe transport and no other PRLIs are outstanding, 2341 * it is no longer an active node. Otherwise devloss 2342 * handles the final cleanup. 2343 */ 2344 if (!(ndlp->fc4_xpt_flags & (SCSI_XPT_REGD | NVME_XPT_REGD)) && 2345 !ndlp->fc4_prli_sent) { 2346 spin_lock_irq(&ndlp->lock); 2347 ndlp->nlp_flag &= ~NLP_NPR_2B_DISC; 2348 spin_unlock_irq(&ndlp->lock); 2349 lpfc_disc_state_machine(vport, ndlp, cmdiocb, 2350 NLP_EVT_DEVICE_RM); 2351 } 2352 } else { 2353 /* Good status, call state machine. However, if another 2354 * PRLI is outstanding, don't call the state machine 2355 * because final disposition to Mapped or Unmapped is 2356 * completed there. 2357 */ 2358 lpfc_disc_state_machine(vport, ndlp, cmdiocb, 2359 NLP_EVT_CMPL_PRLI); 2360 } 2361 2362 out: 2363 lpfc_els_free_iocb(phba, cmdiocb); 2364 lpfc_nlp_put(ndlp); 2365 return; 2366 } 2367 2368 /** 2369 * lpfc_issue_els_prli - Issue a prli iocb command for a vport 2370 * @vport: pointer to a host virtual N_Port data structure. 2371 * @ndlp: pointer to a node-list data structure. 2372 * @retry: number of retries to the command IOCB. 2373 * 2374 * This routine issues a Process Login (PRLI) ELS command for the 2375 * @vport. The PRLI service parameters are set up in the payload of the 2376 * PRLI Request command and the pointer to lpfc_cmpl_els_prli() routine 2377 * is put to the IOCB completion callback func field before invoking the 2378 * routine lpfc_sli_issue_iocb() to send out PRLI command. 2379 * 2380 * Note that the ndlp reference count will be incremented by 1 for holding the 2381 * ndlp and the reference to ndlp will be stored into the context1 field of 2382 * the IOCB for the completion callback function to the PRLI ELS command. 2383 * 2384 * Return code 2385 * 0 - successfully issued prli iocb command for @vport 2386 * 1 - failed to issue prli iocb command for @vport 2387 **/ 2388 int 2389 lpfc_issue_els_prli(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 2390 uint8_t retry) 2391 { 2392 int rc = 0; 2393 struct lpfc_hba *phba = vport->phba; 2394 PRLI *npr; 2395 struct lpfc_nvme_prli *npr_nvme; 2396 struct lpfc_iocbq *elsiocb; 2397 uint8_t *pcmd; 2398 uint16_t cmdsize; 2399 u32 local_nlp_type, elscmd; 2400 2401 /* 2402 * If we are in RSCN mode, the FC4 types supported from a 2403 * previous GFT_ID command may not be accurate. So, if we 2404 * are a NVME Initiator, always look for the possibility of 2405 * the remote NPort beng a NVME Target. 2406 */ 2407 if (phba->sli_rev == LPFC_SLI_REV4 && 2408 vport->fc_flag & FC_RSCN_MODE && 2409 vport->nvmei_support) 2410 ndlp->nlp_fc4_type |= NLP_FC4_NVME; 2411 local_nlp_type = ndlp->nlp_fc4_type; 2412 2413 /* This routine will issue 1 or 2 PRLIs, so zero all the ndlp 2414 * fields here before any of them can complete. 2415 */ 2416 ndlp->nlp_type &= ~(NLP_FCP_TARGET | NLP_FCP_INITIATOR); 2417 ndlp->nlp_type &= ~(NLP_NVME_TARGET | NLP_NVME_INITIATOR); 2418 ndlp->nlp_fcp_info &= ~NLP_FCP_2_DEVICE; 2419 ndlp->nlp_flag &= ~(NLP_FIRSTBURST | NLP_NPR_2B_DISC); 2420 ndlp->nvme_fb_size = 0; 2421 2422 send_next_prli: 2423 if (local_nlp_type & NLP_FC4_FCP) { 2424 /* Payload is 4 + 16 = 20 x14 bytes. */ 2425 cmdsize = (sizeof(uint32_t) + sizeof(PRLI)); 2426 elscmd = ELS_CMD_PRLI; 2427 } else if (local_nlp_type & NLP_FC4_NVME) { 2428 /* Payload is 4 + 20 = 24 x18 bytes. */ 2429 cmdsize = (sizeof(uint32_t) + sizeof(struct lpfc_nvme_prli)); 2430 elscmd = ELS_CMD_NVMEPRLI; 2431 } else { 2432 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, 2433 "3083 Unknown FC_TYPE x%x ndlp x%06x\n", 2434 ndlp->nlp_fc4_type, ndlp->nlp_DID); 2435 return 1; 2436 } 2437 2438 /* SLI3 ports don't support NVME. If this rport is a strict NVME 2439 * FC4 type, implicitly LOGO. 2440 */ 2441 if (phba->sli_rev == LPFC_SLI_REV3 && 2442 ndlp->nlp_fc4_type == NLP_FC4_NVME) { 2443 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, 2444 "3088 Rport fc4 type 0x%x not supported by SLI3 adapter\n", 2445 ndlp->nlp_type); 2446 lpfc_disc_state_machine(vport, ndlp, NULL, NLP_EVT_DEVICE_RM); 2447 return 1; 2448 } 2449 2450 elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp, 2451 ndlp->nlp_DID, elscmd); 2452 if (!elsiocb) 2453 return 1; 2454 2455 pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt); 2456 2457 /* For PRLI request, remainder of payload is service parameters */ 2458 memset(pcmd, 0, cmdsize); 2459 2460 if (local_nlp_type & NLP_FC4_FCP) { 2461 /* Remainder of payload is FCP PRLI parameter page. 2462 * Note: this data structure is defined as 2463 * BE/LE in the structure definition so no 2464 * byte swap call is made. 2465 */ 2466 *((uint32_t *)(pcmd)) = ELS_CMD_PRLI; 2467 pcmd += sizeof(uint32_t); 2468 npr = (PRLI *)pcmd; 2469 2470 /* 2471 * If our firmware version is 3.20 or later, 2472 * set the following bits for FC-TAPE support. 2473 */ 2474 if (phba->vpd.rev.feaLevelHigh >= 0x02) { 2475 npr->ConfmComplAllowed = 1; 2476 npr->Retry = 1; 2477 npr->TaskRetryIdReq = 1; 2478 } 2479 npr->estabImagePair = 1; 2480 npr->readXferRdyDis = 1; 2481 if (vport->cfg_first_burst_size) 2482 npr->writeXferRdyDis = 1; 2483 2484 /* For FCP support */ 2485 npr->prliType = PRLI_FCP_TYPE; 2486 npr->initiatorFunc = 1; 2487 elsiocb->iocb_flag |= LPFC_PRLI_FCP_REQ; 2488 2489 /* Remove FCP type - processed. */ 2490 local_nlp_type &= ~NLP_FC4_FCP; 2491 } else if (local_nlp_type & NLP_FC4_NVME) { 2492 /* Remainder of payload is NVME PRLI parameter page. 2493 * This data structure is the newer definition that 2494 * uses bf macros so a byte swap is required. 2495 */ 2496 *((uint32_t *)(pcmd)) = ELS_CMD_NVMEPRLI; 2497 pcmd += sizeof(uint32_t); 2498 npr_nvme = (struct lpfc_nvme_prli *)pcmd; 2499 bf_set(prli_type_code, npr_nvme, PRLI_NVME_TYPE); 2500 bf_set(prli_estabImagePair, npr_nvme, 0); /* Should be 0 */ 2501 if (phba->nsler) { 2502 bf_set(prli_nsler, npr_nvme, 1); 2503 bf_set(prli_conf, npr_nvme, 1); 2504 } 2505 2506 /* Only initiators request first burst. */ 2507 if ((phba->cfg_nvme_enable_fb) && 2508 !phba->nvmet_support) 2509 bf_set(prli_fba, npr_nvme, 1); 2510 2511 if (phba->nvmet_support) { 2512 bf_set(prli_tgt, npr_nvme, 1); 2513 bf_set(prli_disc, npr_nvme, 1); 2514 } else { 2515 bf_set(prli_init, npr_nvme, 1); 2516 bf_set(prli_conf, npr_nvme, 1); 2517 } 2518 2519 npr_nvme->word1 = cpu_to_be32(npr_nvme->word1); 2520 npr_nvme->word4 = cpu_to_be32(npr_nvme->word4); 2521 elsiocb->iocb_flag |= LPFC_PRLI_NVME_REQ; 2522 2523 /* Remove NVME type - processed. */ 2524 local_nlp_type &= ~NLP_FC4_NVME; 2525 } 2526 2527 phba->fc_stat.elsXmitPRLI++; 2528 elsiocb->iocb_cmpl = lpfc_cmpl_els_prli; 2529 spin_lock_irq(&ndlp->lock); 2530 ndlp->nlp_flag |= NLP_PRLI_SND; 2531 2532 /* The vport counters are used for lpfc_scan_finished, but 2533 * the ndlp is used to track outstanding PRLIs for different 2534 * FC4 types. 2535 */ 2536 vport->fc_prli_sent++; 2537 ndlp->fc4_prli_sent++; 2538 spin_unlock_irq(&ndlp->lock); 2539 2540 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, 2541 "Issue PRLI: did:x%x refcnt %d", 2542 ndlp->nlp_DID, kref_read(&ndlp->kref), 0); 2543 elsiocb->context1 = lpfc_nlp_get(ndlp); 2544 if (!elsiocb->context1) { 2545 lpfc_els_free_iocb(phba, elsiocb); 2546 goto err; 2547 } 2548 2549 rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0); 2550 if (rc == IOCB_ERROR) { 2551 lpfc_els_free_iocb(phba, elsiocb); 2552 lpfc_nlp_put(ndlp); 2553 goto err; 2554 } 2555 2556 2557 /* The driver supports 2 FC4 types. Make sure 2558 * a PRLI is issued for all types before exiting. 2559 */ 2560 if (phba->sli_rev == LPFC_SLI_REV4 && 2561 local_nlp_type & (NLP_FC4_FCP | NLP_FC4_NVME)) 2562 goto send_next_prli; 2563 else 2564 return 0; 2565 2566 err: 2567 spin_lock_irq(&ndlp->lock); 2568 ndlp->nlp_flag &= ~NLP_PRLI_SND; 2569 spin_unlock_irq(&ndlp->lock); 2570 return 1; 2571 } 2572 2573 /** 2574 * lpfc_rscn_disc - Perform rscn discovery for a vport 2575 * @vport: pointer to a host virtual N_Port data structure. 2576 * 2577 * This routine performs Registration State Change Notification (RSCN) 2578 * discovery for a @vport. If the @vport's node port recovery count is not 2579 * zero, it will invoke the lpfc_els_disc_plogi() to perform PLOGI for all 2580 * the nodes that need recovery. If none of the PLOGI were needed through 2581 * the lpfc_els_disc_plogi() routine, the lpfc_end_rscn() routine shall be 2582 * invoked to check and handle possible more RSCN came in during the period 2583 * of processing the current ones. 2584 **/ 2585 static void 2586 lpfc_rscn_disc(struct lpfc_vport *vport) 2587 { 2588 lpfc_can_disctmo(vport); 2589 2590 /* RSCN discovery */ 2591 /* go thru NPR nodes and issue ELS PLOGIs */ 2592 if (vport->fc_npr_cnt) 2593 if (lpfc_els_disc_plogi(vport)) 2594 return; 2595 2596 lpfc_end_rscn(vport); 2597 } 2598 2599 /** 2600 * lpfc_adisc_done - Complete the adisc phase of discovery 2601 * @vport: pointer to lpfc_vport hba data structure that finished all ADISCs. 2602 * 2603 * This function is called when the final ADISC is completed during discovery. 2604 * This function handles clearing link attention or issuing reg_vpi depending 2605 * on whether npiv is enabled. This function also kicks off the PLOGI phase of 2606 * discovery. 2607 * This function is called with no locks held. 2608 **/ 2609 static void 2610 lpfc_adisc_done(struct lpfc_vport *vport) 2611 { 2612 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 2613 struct lpfc_hba *phba = vport->phba; 2614 2615 /* 2616 * For NPIV, cmpl_reg_vpi will set port_state to READY, 2617 * and continue discovery. 2618 */ 2619 if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) && 2620 !(vport->fc_flag & FC_RSCN_MODE) && 2621 (phba->sli_rev < LPFC_SLI_REV4)) { 2622 2623 /* 2624 * If link is down, clear_la and reg_vpi will be done after 2625 * flogi following a link up event 2626 */ 2627 if (!lpfc_is_link_up(phba)) 2628 return; 2629 2630 /* The ADISCs are complete. Doesn't matter if they 2631 * succeeded or failed because the ADISC completion 2632 * routine guarantees to call the state machine and 2633 * the RPI is either unregistered (failed ADISC response) 2634 * or the RPI is still valid and the node is marked 2635 * mapped for a target. The exchanges should be in the 2636 * correct state. This code is specific to SLI3. 2637 */ 2638 lpfc_issue_clear_la(phba, vport); 2639 lpfc_issue_reg_vpi(phba, vport); 2640 return; 2641 } 2642 /* 2643 * For SLI2, we need to set port_state to READY 2644 * and continue discovery. 2645 */ 2646 if (vport->port_state < LPFC_VPORT_READY) { 2647 /* If we get here, there is nothing to ADISC */ 2648 lpfc_issue_clear_la(phba, vport); 2649 if (!(vport->fc_flag & FC_ABORT_DISCOVERY)) { 2650 vport->num_disc_nodes = 0; 2651 /* go thru NPR list, issue ELS PLOGIs */ 2652 if (vport->fc_npr_cnt) 2653 lpfc_els_disc_plogi(vport); 2654 if (!vport->num_disc_nodes) { 2655 spin_lock_irq(shost->host_lock); 2656 vport->fc_flag &= ~FC_NDISC_ACTIVE; 2657 spin_unlock_irq(shost->host_lock); 2658 lpfc_can_disctmo(vport); 2659 lpfc_end_rscn(vport); 2660 } 2661 } 2662 vport->port_state = LPFC_VPORT_READY; 2663 } else 2664 lpfc_rscn_disc(vport); 2665 } 2666 2667 /** 2668 * lpfc_more_adisc - Issue more adisc as needed 2669 * @vport: pointer to a host virtual N_Port data structure. 2670 * 2671 * This routine determines whether there are more ndlps on a @vport 2672 * node list need to have Address Discover (ADISC) issued. If so, it will 2673 * invoke the lpfc_els_disc_adisc() routine to issue ADISC on the @vport's 2674 * remaining nodes which need to have ADISC sent. 2675 **/ 2676 void 2677 lpfc_more_adisc(struct lpfc_vport *vport) 2678 { 2679 if (vport->num_disc_nodes) 2680 vport->num_disc_nodes--; 2681 /* Continue discovery with <num_disc_nodes> ADISCs to go */ 2682 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, 2683 "0210 Continue discovery with %d ADISCs to go " 2684 "Data: x%x x%x x%x\n", 2685 vport->num_disc_nodes, vport->fc_adisc_cnt, 2686 vport->fc_flag, vport->port_state); 2687 /* Check to see if there are more ADISCs to be sent */ 2688 if (vport->fc_flag & FC_NLP_MORE) { 2689 lpfc_set_disctmo(vport); 2690 /* go thru NPR nodes and issue any remaining ELS ADISCs */ 2691 lpfc_els_disc_adisc(vport); 2692 } 2693 if (!vport->num_disc_nodes) 2694 lpfc_adisc_done(vport); 2695 return; 2696 } 2697 2698 /** 2699 * lpfc_cmpl_els_adisc - Completion callback function for adisc 2700 * @phba: pointer to lpfc hba data structure. 2701 * @cmdiocb: pointer to lpfc command iocb data structure. 2702 * @rspiocb: pointer to lpfc response iocb data structure. 2703 * 2704 * This routine is the completion function for issuing the Address Discover 2705 * (ADISC) command. It first checks to see whether link went down during 2706 * the discovery process. If so, the node will be marked as node port 2707 * recovery for issuing discover IOCB by the link attention handler and 2708 * exit. Otherwise, the response status is checked. If error was reported 2709 * in the response status, the ADISC command shall be retried by invoking 2710 * the lpfc_els_retry() routine. Otherwise, if no error was reported in 2711 * the response status, the state machine is invoked to set transition 2712 * with respect to NLP_EVT_CMPL_ADISC event. 2713 **/ 2714 static void 2715 lpfc_cmpl_els_adisc(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb, 2716 struct lpfc_iocbq *rspiocb) 2717 { 2718 struct lpfc_vport *vport = cmdiocb->vport; 2719 IOCB_t *irsp; 2720 struct lpfc_nodelist *ndlp; 2721 int disc; 2722 2723 /* we pass cmdiocb to state machine which needs rspiocb as well */ 2724 cmdiocb->context_un.rsp_iocb = rspiocb; 2725 2726 irsp = &(rspiocb->iocb); 2727 ndlp = (struct lpfc_nodelist *) cmdiocb->context1; 2728 2729 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, 2730 "ADISC cmpl: status:x%x/x%x did:x%x", 2731 irsp->ulpStatus, irsp->un.ulpWord[4], 2732 ndlp->nlp_DID); 2733 2734 /* Since ndlp can be freed in the disc state machine, note if this node 2735 * is being used during discovery. 2736 */ 2737 spin_lock_irq(&ndlp->lock); 2738 disc = (ndlp->nlp_flag & NLP_NPR_2B_DISC); 2739 ndlp->nlp_flag &= ~(NLP_ADISC_SND | NLP_NPR_2B_DISC); 2740 spin_unlock_irq(&ndlp->lock); 2741 /* ADISC completes to NPort <nlp_DID> */ 2742 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, 2743 "0104 ADISC completes to NPort x%x " 2744 "Data: x%x x%x x%x x%x x%x\n", 2745 ndlp->nlp_DID, irsp->ulpStatus, irsp->un.ulpWord[4], 2746 irsp->ulpTimeout, disc, vport->num_disc_nodes); 2747 /* Check to see if link went down during discovery */ 2748 if (lpfc_els_chk_latt(vport)) { 2749 spin_lock_irq(&ndlp->lock); 2750 ndlp->nlp_flag |= NLP_NPR_2B_DISC; 2751 spin_unlock_irq(&ndlp->lock); 2752 goto out; 2753 } 2754 2755 if (irsp->ulpStatus) { 2756 /* Check for retry */ 2757 if (lpfc_els_retry(phba, cmdiocb, rspiocb)) { 2758 /* ELS command is being retried */ 2759 if (disc) { 2760 spin_lock_irq(&ndlp->lock); 2761 ndlp->nlp_flag |= NLP_NPR_2B_DISC; 2762 spin_unlock_irq(&ndlp->lock); 2763 lpfc_set_disctmo(vport); 2764 } 2765 goto out; 2766 } 2767 /* ADISC failed */ 2768 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 2769 "2755 ADISC failure DID:%06X Status:x%x/x%x\n", 2770 ndlp->nlp_DID, irsp->ulpStatus, 2771 irsp->un.ulpWord[4]); 2772 2773 lpfc_disc_state_machine(vport, ndlp, cmdiocb, 2774 NLP_EVT_CMPL_ADISC); 2775 2776 /* As long as this node is not registered with the SCSI or NVMe 2777 * transport, it is no longer an active node. Otherwise 2778 * devloss handles the final cleanup. 2779 */ 2780 if (!(ndlp->fc4_xpt_flags & (SCSI_XPT_REGD | NVME_XPT_REGD))) { 2781 spin_lock_irq(&ndlp->lock); 2782 ndlp->nlp_flag &= ~NLP_NPR_2B_DISC; 2783 spin_unlock_irq(&ndlp->lock); 2784 lpfc_disc_state_machine(vport, ndlp, cmdiocb, 2785 NLP_EVT_DEVICE_RM); 2786 } 2787 } else 2788 /* Good status, call state machine */ 2789 lpfc_disc_state_machine(vport, ndlp, cmdiocb, 2790 NLP_EVT_CMPL_ADISC); 2791 2792 /* Check to see if there are more ADISCs to be sent */ 2793 if (disc && vport->num_disc_nodes) 2794 lpfc_more_adisc(vport); 2795 out: 2796 lpfc_els_free_iocb(phba, cmdiocb); 2797 lpfc_nlp_put(ndlp); 2798 return; 2799 } 2800 2801 /** 2802 * lpfc_issue_els_adisc - Issue an address discover iocb to an node on a vport 2803 * @vport: pointer to a virtual N_Port data structure. 2804 * @ndlp: pointer to a node-list data structure. 2805 * @retry: number of retries to the command IOCB. 2806 * 2807 * This routine issues an Address Discover (ADISC) for an @ndlp on a 2808 * @vport. It prepares the payload of the ADISC ELS command, updates the 2809 * and states of the ndlp, and invokes the lpfc_sli_issue_iocb() routine 2810 * to issue the ADISC ELS command. 2811 * 2812 * Note that the ndlp reference count will be incremented by 1 for holding the 2813 * ndlp and the reference to ndlp will be stored into the context1 field of 2814 * the IOCB for the completion callback function to the ADISC ELS command. 2815 * 2816 * Return code 2817 * 0 - successfully issued adisc 2818 * 1 - failed to issue adisc 2819 **/ 2820 int 2821 lpfc_issue_els_adisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 2822 uint8_t retry) 2823 { 2824 int rc = 0; 2825 struct lpfc_hba *phba = vport->phba; 2826 ADISC *ap; 2827 struct lpfc_iocbq *elsiocb; 2828 uint8_t *pcmd; 2829 uint16_t cmdsize; 2830 2831 cmdsize = (sizeof(uint32_t) + sizeof(ADISC)); 2832 elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp, 2833 ndlp->nlp_DID, ELS_CMD_ADISC); 2834 if (!elsiocb) 2835 return 1; 2836 2837 pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt); 2838 2839 /* For ADISC request, remainder of payload is service parameters */ 2840 *((uint32_t *) (pcmd)) = ELS_CMD_ADISC; 2841 pcmd += sizeof(uint32_t); 2842 2843 /* Fill in ADISC payload */ 2844 ap = (ADISC *) pcmd; 2845 ap->hardAL_PA = phba->fc_pref_ALPA; 2846 memcpy(&ap->portName, &vport->fc_portname, sizeof(struct lpfc_name)); 2847 memcpy(&ap->nodeName, &vport->fc_nodename, sizeof(struct lpfc_name)); 2848 ap->DID = be32_to_cpu(vport->fc_myDID); 2849 2850 phba->fc_stat.elsXmitADISC++; 2851 elsiocb->iocb_cmpl = lpfc_cmpl_els_adisc; 2852 spin_lock_irq(&ndlp->lock); 2853 ndlp->nlp_flag |= NLP_ADISC_SND; 2854 spin_unlock_irq(&ndlp->lock); 2855 elsiocb->context1 = lpfc_nlp_get(ndlp); 2856 if (!elsiocb->context1) { 2857 lpfc_els_free_iocb(phba, elsiocb); 2858 goto err; 2859 } 2860 2861 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, 2862 "Issue ADISC: did:x%x refcnt %d", 2863 ndlp->nlp_DID, kref_read(&ndlp->kref), 0); 2864 rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0); 2865 if (rc == IOCB_ERROR) { 2866 lpfc_els_free_iocb(phba, elsiocb); 2867 lpfc_nlp_put(ndlp); 2868 goto err; 2869 } 2870 2871 return 0; 2872 2873 err: 2874 spin_lock_irq(&ndlp->lock); 2875 ndlp->nlp_flag &= ~NLP_ADISC_SND; 2876 spin_unlock_irq(&ndlp->lock); 2877 return 1; 2878 } 2879 2880 /** 2881 * lpfc_cmpl_els_logo - Completion callback function for logo 2882 * @phba: pointer to lpfc hba data structure. 2883 * @cmdiocb: pointer to lpfc command iocb data structure. 2884 * @rspiocb: pointer to lpfc response iocb data structure. 2885 * 2886 * This routine is the completion function for issuing the ELS Logout (LOGO) 2887 * command. If no error status was reported from the LOGO response, the 2888 * state machine of the associated ndlp shall be invoked for transition with 2889 * respect to NLP_EVT_CMPL_LOGO event. 2890 **/ 2891 static void 2892 lpfc_cmpl_els_logo(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb, 2893 struct lpfc_iocbq *rspiocb) 2894 { 2895 struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) cmdiocb->context1; 2896 struct lpfc_vport *vport = ndlp->vport; 2897 IOCB_t *irsp; 2898 unsigned long flags; 2899 uint32_t skip_recovery = 0; 2900 int wake_up_waiter = 0; 2901 2902 /* we pass cmdiocb to state machine which needs rspiocb as well */ 2903 cmdiocb->context_un.rsp_iocb = rspiocb; 2904 2905 irsp = &(rspiocb->iocb); 2906 spin_lock_irq(&ndlp->lock); 2907 ndlp->nlp_flag &= ~NLP_LOGO_SND; 2908 if (ndlp->upcall_flags & NLP_WAIT_FOR_LOGO) { 2909 wake_up_waiter = 1; 2910 ndlp->upcall_flags &= ~NLP_WAIT_FOR_LOGO; 2911 } 2912 spin_unlock_irq(&ndlp->lock); 2913 2914 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, 2915 "LOGO cmpl: status:x%x/x%x did:x%x", 2916 irsp->ulpStatus, irsp->un.ulpWord[4], 2917 ndlp->nlp_DID); 2918 2919 /* LOGO completes to NPort <nlp_DID> */ 2920 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, 2921 "0105 LOGO completes to NPort x%x " 2922 "refcnt %d nflags x%x Data: x%x x%x x%x x%x\n", 2923 ndlp->nlp_DID, kref_read(&ndlp->kref), ndlp->nlp_flag, 2924 irsp->ulpStatus, irsp->un.ulpWord[4], 2925 irsp->ulpTimeout, vport->num_disc_nodes); 2926 2927 if (lpfc_els_chk_latt(vport)) { 2928 skip_recovery = 1; 2929 goto out; 2930 } 2931 2932 /* The LOGO will not be retried on failure. A LOGO was 2933 * issued to the remote rport and a ACC or RJT or no Answer are 2934 * all acceptable. Note the failure and move forward with 2935 * discovery. The PLOGI will retry. 2936 */ 2937 if (irsp->ulpStatus) { 2938 /* LOGO failed */ 2939 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 2940 "2756 LOGO failure, No Retry DID:%06X Status:x%x/x%x\n", 2941 ndlp->nlp_DID, irsp->ulpStatus, 2942 irsp->un.ulpWord[4]); 2943 /* Do not call DSM for lpfc_els_abort'ed ELS cmds */ 2944 if (lpfc_error_lost_link(irsp)) { 2945 skip_recovery = 1; 2946 goto out; 2947 } 2948 } 2949 2950 /* Call state machine. This will unregister the rpi if needed. */ 2951 lpfc_disc_state_machine(vport, ndlp, cmdiocb, NLP_EVT_CMPL_LOGO); 2952 2953 /* The driver sets this flag for an NPIV instance that doesn't want to 2954 * log into the remote port. 2955 */ 2956 if (ndlp->nlp_flag & NLP_TARGET_REMOVE) { 2957 spin_lock_irq(&ndlp->lock); 2958 if (phba->sli_rev == LPFC_SLI_REV4) 2959 ndlp->nlp_flag |= NLP_RELEASE_RPI; 2960 ndlp->nlp_flag &= ~NLP_NPR_2B_DISC; 2961 spin_unlock_irq(&ndlp->lock); 2962 lpfc_disc_state_machine(vport, ndlp, cmdiocb, 2963 NLP_EVT_DEVICE_RM); 2964 lpfc_els_free_iocb(phba, cmdiocb); 2965 lpfc_nlp_put(ndlp); 2966 2967 /* Presume the node was released. */ 2968 return; 2969 } 2970 2971 out: 2972 /* Driver is done with the IO. */ 2973 lpfc_els_free_iocb(phba, cmdiocb); 2974 lpfc_nlp_put(ndlp); 2975 2976 /* At this point, the LOGO processing is complete. NOTE: For a 2977 * pt2pt topology, we are assuming the NPortID will only change 2978 * on link up processing. For a LOGO / PLOGI initiated by the 2979 * Initiator, we are assuming the NPortID is not going to change. 2980 */ 2981 2982 if (wake_up_waiter && ndlp->logo_waitq) 2983 wake_up(ndlp->logo_waitq); 2984 /* 2985 * If the node is a target, the handling attempts to recover the port. 2986 * For any other port type, the rpi is unregistered as an implicit 2987 * LOGO. 2988 */ 2989 if (ndlp->nlp_type & (NLP_FCP_TARGET | NLP_NVME_TARGET) && 2990 skip_recovery == 0) { 2991 lpfc_cancel_retry_delay_tmo(vport, ndlp); 2992 spin_lock_irqsave(&ndlp->lock, flags); 2993 ndlp->nlp_flag |= NLP_NPR_2B_DISC; 2994 spin_unlock_irqrestore(&ndlp->lock, flags); 2995 2996 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, 2997 "3187 LOGO completes to NPort x%x: Start " 2998 "Recovery Data: x%x x%x x%x x%x\n", 2999 ndlp->nlp_DID, irsp->ulpStatus, 3000 irsp->un.ulpWord[4], irsp->ulpTimeout, 3001 vport->num_disc_nodes); 3002 lpfc_disc_start(vport); 3003 return; 3004 } 3005 3006 /* Cleanup path for failed REG_RPI handling. If REG_RPI fails, the 3007 * driver sends a LOGO to the rport to cleanup. For fabric and 3008 * initiator ports cleanup the node as long as it the node is not 3009 * register with the transport. 3010 */ 3011 if (!(ndlp->fc4_xpt_flags & (SCSI_XPT_REGD | NVME_XPT_REGD))) { 3012 spin_lock_irq(&ndlp->lock); 3013 ndlp->nlp_flag &= ~NLP_NPR_2B_DISC; 3014 spin_unlock_irq(&ndlp->lock); 3015 lpfc_disc_state_machine(vport, ndlp, cmdiocb, 3016 NLP_EVT_DEVICE_RM); 3017 } 3018 } 3019 3020 /** 3021 * lpfc_issue_els_logo - Issue a logo to an node on a vport 3022 * @vport: pointer to a virtual N_Port data structure. 3023 * @ndlp: pointer to a node-list data structure. 3024 * @retry: number of retries to the command IOCB. 3025 * 3026 * This routine constructs and issues an ELS Logout (LOGO) iocb command 3027 * to a remote node, referred by an @ndlp on a @vport. It constructs the 3028 * payload of the IOCB, properly sets up the @ndlp state, and invokes the 3029 * lpfc_sli_issue_iocb() routine to send out the LOGO ELS command. 3030 * 3031 * Note that the ndlp reference count will be incremented by 1 for holding the 3032 * ndlp and the reference to ndlp will be stored into the context1 field of 3033 * the IOCB for the completion callback function to the LOGO ELS command. 3034 * 3035 * Callers of this routine are expected to unregister the RPI first 3036 * 3037 * Return code 3038 * 0 - successfully issued logo 3039 * 1 - failed to issue logo 3040 **/ 3041 int 3042 lpfc_issue_els_logo(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 3043 uint8_t retry) 3044 { 3045 struct lpfc_hba *phba = vport->phba; 3046 struct lpfc_iocbq *elsiocb; 3047 uint8_t *pcmd; 3048 uint16_t cmdsize; 3049 int rc; 3050 3051 spin_lock_irq(&ndlp->lock); 3052 if (ndlp->nlp_flag & NLP_LOGO_SND) { 3053 spin_unlock_irq(&ndlp->lock); 3054 return 0; 3055 } 3056 spin_unlock_irq(&ndlp->lock); 3057 3058 cmdsize = (2 * sizeof(uint32_t)) + sizeof(struct lpfc_name); 3059 elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp, 3060 ndlp->nlp_DID, ELS_CMD_LOGO); 3061 if (!elsiocb) 3062 return 1; 3063 3064 pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt); 3065 *((uint32_t *) (pcmd)) = ELS_CMD_LOGO; 3066 pcmd += sizeof(uint32_t); 3067 3068 /* Fill in LOGO payload */ 3069 *((uint32_t *) (pcmd)) = be32_to_cpu(vport->fc_myDID); 3070 pcmd += sizeof(uint32_t); 3071 memcpy(pcmd, &vport->fc_portname, sizeof(struct lpfc_name)); 3072 3073 phba->fc_stat.elsXmitLOGO++; 3074 elsiocb->iocb_cmpl = lpfc_cmpl_els_logo; 3075 spin_lock_irq(&ndlp->lock); 3076 ndlp->nlp_flag |= NLP_LOGO_SND; 3077 ndlp->nlp_flag &= ~NLP_ISSUE_LOGO; 3078 spin_unlock_irq(&ndlp->lock); 3079 elsiocb->context1 = lpfc_nlp_get(ndlp); 3080 if (!elsiocb->context1) { 3081 lpfc_els_free_iocb(phba, elsiocb); 3082 goto err; 3083 } 3084 3085 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, 3086 "Issue LOGO: did:x%x refcnt %d", 3087 ndlp->nlp_DID, kref_read(&ndlp->kref), 0); 3088 rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0); 3089 if (rc == IOCB_ERROR) { 3090 lpfc_els_free_iocb(phba, elsiocb); 3091 lpfc_nlp_put(ndlp); 3092 goto err; 3093 } 3094 3095 spin_lock_irq(&ndlp->lock); 3096 ndlp->nlp_prev_state = ndlp->nlp_state; 3097 spin_unlock_irq(&ndlp->lock); 3098 lpfc_nlp_set_state(vport, ndlp, NLP_STE_LOGO_ISSUE); 3099 return 0; 3100 3101 err: 3102 spin_lock_irq(&ndlp->lock); 3103 ndlp->nlp_flag &= ~NLP_LOGO_SND; 3104 spin_unlock_irq(&ndlp->lock); 3105 return 1; 3106 } 3107 3108 /** 3109 * lpfc_cmpl_els_cmd - Completion callback function for generic els command 3110 * @phba: pointer to lpfc hba data structure. 3111 * @cmdiocb: pointer to lpfc command iocb data structure. 3112 * @rspiocb: pointer to lpfc response iocb data structure. 3113 * 3114 * This routine is a generic completion callback function for ELS commands. 3115 * Specifically, it is the callback function which does not need to perform 3116 * any command specific operations. It is currently used by the ELS command 3117 * issuing routines for RSCN, lpfc_issue_els_rscn, and the ELS Fibre Channel 3118 * Address Resolution Protocol Response (FARPR) routine, lpfc_issue_els_farpr(). 3119 * Other than certain debug loggings, this callback function simply invokes the 3120 * lpfc_els_chk_latt() routine to check whether link went down during the 3121 * discovery process. 3122 **/ 3123 static void 3124 lpfc_cmpl_els_cmd(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb, 3125 struct lpfc_iocbq *rspiocb) 3126 { 3127 struct lpfc_vport *vport = cmdiocb->vport; 3128 struct lpfc_nodelist *free_ndlp; 3129 IOCB_t *irsp; 3130 3131 irsp = &rspiocb->iocb; 3132 3133 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, 3134 "ELS cmd cmpl: status:x%x/x%x did:x%x", 3135 irsp->ulpStatus, irsp->un.ulpWord[4], 3136 irsp->un.elsreq64.remoteID); 3137 3138 /* ELS cmd tag <ulpIoTag> completes */ 3139 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, 3140 "0106 ELS cmd tag x%x completes Data: x%x x%x x%x\n", 3141 irsp->ulpIoTag, irsp->ulpStatus, 3142 irsp->un.ulpWord[4], irsp->ulpTimeout); 3143 3144 /* Check to see if link went down during discovery */ 3145 lpfc_els_chk_latt(vport); 3146 3147 free_ndlp = (struct lpfc_nodelist *)cmdiocb->context1; 3148 3149 lpfc_els_free_iocb(phba, cmdiocb); 3150 lpfc_nlp_put(free_ndlp); 3151 } 3152 3153 /** 3154 * lpfc_reg_fab_ctrl_node - RPI register the fabric controller node. 3155 * @vport: pointer to lpfc_vport data structure. 3156 * @fc_ndlp: pointer to the fabric controller (0xfffffd) node. 3157 * 3158 * This routine registers the rpi assigned to the fabric controller 3159 * NPort_ID (0xfffffd) with the port and moves the node to UNMAPPED 3160 * state triggering a registration with the SCSI transport. 3161 * 3162 * This routine is single out because the fabric controller node 3163 * does not receive a PLOGI. This routine is consumed by the 3164 * SCR and RDF ELS commands. Callers are expected to qualify 3165 * with SLI4 first. 3166 **/ 3167 static int 3168 lpfc_reg_fab_ctrl_node(struct lpfc_vport *vport, struct lpfc_nodelist *fc_ndlp) 3169 { 3170 int rc = 0; 3171 struct lpfc_hba *phba = vport->phba; 3172 struct lpfc_nodelist *ns_ndlp; 3173 LPFC_MBOXQ_t *mbox; 3174 struct lpfc_dmabuf *mp; 3175 3176 if (fc_ndlp->nlp_flag & NLP_RPI_REGISTERED) 3177 return rc; 3178 3179 ns_ndlp = lpfc_findnode_did(vport, NameServer_DID); 3180 if (!ns_ndlp) 3181 return -ENODEV; 3182 3183 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE, 3184 "0935 %s: Reg FC RPI x%x on FC DID x%x NSSte: x%x\n", 3185 __func__, fc_ndlp->nlp_rpi, fc_ndlp->nlp_DID, 3186 ns_ndlp->nlp_state); 3187 if (ns_ndlp->nlp_state != NLP_STE_UNMAPPED_NODE) 3188 return -ENODEV; 3189 3190 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 3191 if (!mbox) { 3192 lpfc_printf_vlog(vport, KERN_ERR, LOG_NODE, 3193 "0936 %s: no memory for reg_login " 3194 "Data: x%x x%x x%x x%x\n", __func__, 3195 fc_ndlp->nlp_DID, fc_ndlp->nlp_state, 3196 fc_ndlp->nlp_flag, fc_ndlp->nlp_rpi); 3197 return -ENOMEM; 3198 } 3199 rc = lpfc_reg_rpi(phba, vport->vpi, fc_ndlp->nlp_DID, 3200 (u8 *)&vport->fc_sparam, mbox, fc_ndlp->nlp_rpi); 3201 if (rc) { 3202 rc = -EACCES; 3203 goto out; 3204 } 3205 3206 fc_ndlp->nlp_flag |= NLP_REG_LOGIN_SEND; 3207 mbox->mbox_cmpl = lpfc_mbx_cmpl_fc_reg_login; 3208 mbox->ctx_ndlp = lpfc_nlp_get(fc_ndlp); 3209 if (!mbox->ctx_ndlp) { 3210 rc = -ENOMEM; 3211 goto out_mem; 3212 } 3213 3214 mbox->vport = vport; 3215 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT); 3216 if (rc == MBX_NOT_FINISHED) { 3217 rc = -ENODEV; 3218 lpfc_nlp_put(fc_ndlp); 3219 goto out_mem; 3220 } 3221 /* Success path. Exit. */ 3222 lpfc_nlp_set_state(vport, fc_ndlp, 3223 NLP_STE_REG_LOGIN_ISSUE); 3224 return 0; 3225 3226 out_mem: 3227 fc_ndlp->nlp_flag &= ~NLP_REG_LOGIN_SEND; 3228 mp = (struct lpfc_dmabuf *)mbox->ctx_buf; 3229 lpfc_mbuf_free(phba, mp->virt, mp->phys); 3230 kfree(mp); 3231 3232 out: 3233 mempool_free(mbox, phba->mbox_mem_pool); 3234 lpfc_printf_vlog(vport, KERN_ERR, LOG_NODE, 3235 "0938 %s: failed to format reg_login " 3236 "Data: x%x x%x x%x x%x\n", __func__, 3237 fc_ndlp->nlp_DID, fc_ndlp->nlp_state, 3238 fc_ndlp->nlp_flag, fc_ndlp->nlp_rpi); 3239 return rc; 3240 } 3241 3242 /** 3243 * lpfc_cmpl_els_disc_cmd - Completion callback function for Discovery ELS cmd 3244 * @phba: pointer to lpfc hba data structure. 3245 * @cmdiocb: pointer to lpfc command iocb data structure. 3246 * @rspiocb: pointer to lpfc response iocb data structure. 3247 * 3248 * This routine is a generic completion callback function for Discovery ELS cmd. 3249 * Currently used by the ELS command issuing routines for the ELS State Change 3250 * Request (SCR), lpfc_issue_els_scr() and the ELS RDF, lpfc_issue_els_rdf(). 3251 * These commands will be retried once only for ELS timeout errors. 3252 **/ 3253 static void 3254 lpfc_cmpl_els_disc_cmd(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb, 3255 struct lpfc_iocbq *rspiocb) 3256 { 3257 struct lpfc_vport *vport = cmdiocb->vport; 3258 IOCB_t *irsp; 3259 struct lpfc_els_rdf_rsp *prdf; 3260 struct lpfc_dmabuf *pcmd, *prsp; 3261 u32 *pdata; 3262 u32 cmd; 3263 struct lpfc_nodelist *ndlp = cmdiocb->context1; 3264 3265 irsp = &rspiocb->iocb; 3266 3267 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, 3268 "ELS cmd cmpl: status:x%x/x%x did:x%x", 3269 irsp->ulpStatus, irsp->un.ulpWord[4], 3270 irsp->un.elsreq64.remoteID); 3271 /* ELS cmd tag <ulpIoTag> completes */ 3272 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS | LOG_CGN_MGMT, 3273 "0217 ELS cmd tag x%x completes Data: x%x x%x x%x " 3274 "x%x\n", 3275 irsp->ulpIoTag, irsp->ulpStatus, 3276 irsp->un.ulpWord[4], irsp->ulpTimeout, 3277 cmdiocb->retry); 3278 3279 pcmd = (struct lpfc_dmabuf *)cmdiocb->context2; 3280 if (!pcmd) 3281 goto out; 3282 3283 pdata = (u32 *)pcmd->virt; 3284 if (!pdata) 3285 goto out; 3286 cmd = *pdata; 3287 3288 /* Only 1 retry for ELS Timeout only */ 3289 if (irsp->ulpStatus == IOSTAT_LOCAL_REJECT && 3290 ((irsp->un.ulpWord[4] & IOERR_PARAM_MASK) == 3291 IOERR_SEQUENCE_TIMEOUT)) { 3292 cmdiocb->retry++; 3293 if (cmdiocb->retry <= 1) { 3294 switch (cmd) { 3295 case ELS_CMD_SCR: 3296 lpfc_issue_els_scr(vport, cmdiocb->retry); 3297 break; 3298 case ELS_CMD_EDC: 3299 lpfc_issue_els_edc(vport, cmdiocb->retry); 3300 break; 3301 case ELS_CMD_RDF: 3302 cmdiocb->context1 = NULL; /* save ndlp refcnt */ 3303 lpfc_issue_els_rdf(vport, cmdiocb->retry); 3304 break; 3305 } 3306 goto out; 3307 } 3308 phba->fc_stat.elsRetryExceeded++; 3309 } 3310 if (cmd == ELS_CMD_EDC) { 3311 /* must be called before checking uplStatus and returning */ 3312 lpfc_cmpl_els_edc(phba, cmdiocb, rspiocb); 3313 return; 3314 } 3315 if (irsp->ulpStatus) { 3316 /* ELS discovery cmd completes with error */ 3317 lpfc_printf_vlog(vport, KERN_WARNING, LOG_ELS, 3318 "4203 ELS cmd x%x error: x%x x%X\n", cmd, 3319 irsp->ulpStatus, irsp->un.ulpWord[4]); 3320 goto out; 3321 } 3322 3323 /* The RDF response doesn't have any impact on the running driver 3324 * but the notification descriptors are dumped here for support. 3325 */ 3326 if (cmd == ELS_CMD_RDF) { 3327 int i; 3328 3329 prsp = list_get_first(&pcmd->list, struct lpfc_dmabuf, list); 3330 if (!prsp) 3331 goto out; 3332 3333 prdf = (struct lpfc_els_rdf_rsp *)prsp->virt; 3334 if (!prdf) 3335 goto out; 3336 3337 for (i = 0; i < ELS_RDF_REG_TAG_CNT && 3338 i < be32_to_cpu(prdf->reg_d1.reg_desc.count); i++) 3339 lpfc_printf_vlog(vport, KERN_INFO, 3340 LOG_ELS | LOG_CGN_MGMT, 3341 "4677 Fabric RDF Notification Grant " 3342 "Data: 0x%08x Reg: %x %x\n", 3343 be32_to_cpu( 3344 prdf->reg_d1.desc_tags[i]), 3345 phba->cgn_reg_signal, 3346 phba->cgn_reg_fpin); 3347 } 3348 3349 out: 3350 /* Check to see if link went down during discovery */ 3351 lpfc_els_chk_latt(vport); 3352 lpfc_els_free_iocb(phba, cmdiocb); 3353 lpfc_nlp_put(ndlp); 3354 return; 3355 } 3356 3357 /** 3358 * lpfc_issue_els_scr - Issue a scr to an node on a vport 3359 * @vport: pointer to a host virtual N_Port data structure. 3360 * @retry: retry counter for the command IOCB. 3361 * 3362 * This routine issues a State Change Request (SCR) to a fabric node 3363 * on a @vport. The remote node is Fabric Controller (0xfffffd). It 3364 * first search the @vport node list to find the matching ndlp. If no such 3365 * ndlp is found, a new ndlp shall be created for this (SCR) purpose. An 3366 * IOCB is allocated, payload prepared, and the lpfc_sli_issue_iocb() 3367 * routine is invoked to send the SCR IOCB. 3368 * 3369 * Note that the ndlp reference count will be incremented by 1 for holding the 3370 * ndlp and the reference to ndlp will be stored into the context1 field of 3371 * the IOCB for the completion callback function to the SCR ELS command. 3372 * 3373 * Return code 3374 * 0 - Successfully issued scr command 3375 * 1 - Failed to issue scr command 3376 **/ 3377 int 3378 lpfc_issue_els_scr(struct lpfc_vport *vport, uint8_t retry) 3379 { 3380 int rc = 0; 3381 struct lpfc_hba *phba = vport->phba; 3382 struct lpfc_iocbq *elsiocb; 3383 uint8_t *pcmd; 3384 uint16_t cmdsize; 3385 struct lpfc_nodelist *ndlp; 3386 3387 cmdsize = (sizeof(uint32_t) + sizeof(SCR)); 3388 3389 ndlp = lpfc_findnode_did(vport, Fabric_Cntl_DID); 3390 if (!ndlp) { 3391 ndlp = lpfc_nlp_init(vport, Fabric_Cntl_DID); 3392 if (!ndlp) 3393 return 1; 3394 lpfc_enqueue_node(vport, ndlp); 3395 } 3396 3397 elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp, 3398 ndlp->nlp_DID, ELS_CMD_SCR); 3399 if (!elsiocb) 3400 return 1; 3401 3402 if (phba->sli_rev == LPFC_SLI_REV4) { 3403 rc = lpfc_reg_fab_ctrl_node(vport, ndlp); 3404 if (rc) { 3405 lpfc_els_free_iocb(phba, elsiocb); 3406 lpfc_printf_vlog(vport, KERN_ERR, LOG_NODE, 3407 "0937 %s: Failed to reg fc node, rc %d\n", 3408 __func__, rc); 3409 return 1; 3410 } 3411 } 3412 pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt); 3413 3414 *((uint32_t *) (pcmd)) = ELS_CMD_SCR; 3415 pcmd += sizeof(uint32_t); 3416 3417 /* For SCR, remainder of payload is SCR parameter page */ 3418 memset(pcmd, 0, sizeof(SCR)); 3419 ((SCR *) pcmd)->Function = SCR_FUNC_FULL; 3420 3421 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, 3422 "Issue SCR: did:x%x", 3423 ndlp->nlp_DID, 0, 0); 3424 3425 phba->fc_stat.elsXmitSCR++; 3426 elsiocb->iocb_cmpl = lpfc_cmpl_els_disc_cmd; 3427 elsiocb->context1 = lpfc_nlp_get(ndlp); 3428 if (!elsiocb->context1) { 3429 lpfc_els_free_iocb(phba, elsiocb); 3430 return 1; 3431 } 3432 3433 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, 3434 "Issue SCR: did:x%x refcnt %d", 3435 ndlp->nlp_DID, kref_read(&ndlp->kref), 0); 3436 3437 rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0); 3438 if (rc == IOCB_ERROR) { 3439 lpfc_els_free_iocb(phba, elsiocb); 3440 lpfc_nlp_put(ndlp); 3441 return 1; 3442 } 3443 3444 return 0; 3445 } 3446 3447 /** 3448 * lpfc_issue_els_rscn - Issue an RSCN to the Fabric Controller (Fabric) 3449 * or the other nport (pt2pt). 3450 * @vport: pointer to a host virtual N_Port data structure. 3451 * @retry: number of retries to the command IOCB. 3452 * 3453 * This routine issues a RSCN to the Fabric Controller (DID 0xFFFFFD) 3454 * when connected to a fabric, or to the remote port when connected 3455 * in point-to-point mode. When sent to the Fabric Controller, it will 3456 * replay the RSCN to registered recipients. 3457 * 3458 * Note that the ndlp reference count will be incremented by 1 for holding the 3459 * ndlp and the reference to ndlp will be stored into the context1 field of 3460 * the IOCB for the completion callback function to the RSCN ELS command. 3461 * 3462 * Return code 3463 * 0 - Successfully issued RSCN command 3464 * 1 - Failed to issue RSCN command 3465 **/ 3466 int 3467 lpfc_issue_els_rscn(struct lpfc_vport *vport, uint8_t retry) 3468 { 3469 int rc = 0; 3470 struct lpfc_hba *phba = vport->phba; 3471 struct lpfc_iocbq *elsiocb; 3472 struct lpfc_nodelist *ndlp; 3473 struct { 3474 struct fc_els_rscn rscn; 3475 struct fc_els_rscn_page portid; 3476 } *event; 3477 uint32_t nportid; 3478 uint16_t cmdsize = sizeof(*event); 3479 3480 /* Not supported for private loop */ 3481 if (phba->fc_topology == LPFC_TOPOLOGY_LOOP && 3482 !(vport->fc_flag & FC_PUBLIC_LOOP)) 3483 return 1; 3484 3485 if (vport->fc_flag & FC_PT2PT) { 3486 /* find any mapped nport - that would be the other nport */ 3487 ndlp = lpfc_findnode_mapped(vport); 3488 if (!ndlp) 3489 return 1; 3490 } else { 3491 nportid = FC_FID_FCTRL; 3492 /* find the fabric controller node */ 3493 ndlp = lpfc_findnode_did(vport, nportid); 3494 if (!ndlp) { 3495 /* if one didn't exist, make one */ 3496 ndlp = lpfc_nlp_init(vport, nportid); 3497 if (!ndlp) 3498 return 1; 3499 lpfc_enqueue_node(vport, ndlp); 3500 } 3501 } 3502 3503 elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp, 3504 ndlp->nlp_DID, ELS_CMD_RSCN_XMT); 3505 3506 if (!elsiocb) 3507 return 1; 3508 3509 event = ((struct lpfc_dmabuf *)elsiocb->context2)->virt; 3510 3511 event->rscn.rscn_cmd = ELS_RSCN; 3512 event->rscn.rscn_page_len = sizeof(struct fc_els_rscn_page); 3513 event->rscn.rscn_plen = cpu_to_be16(cmdsize); 3514 3515 nportid = vport->fc_myDID; 3516 /* appears that page flags must be 0 for fabric to broadcast RSCN */ 3517 event->portid.rscn_page_flags = 0; 3518 event->portid.rscn_fid[0] = (nportid & 0x00FF0000) >> 16; 3519 event->portid.rscn_fid[1] = (nportid & 0x0000FF00) >> 8; 3520 event->portid.rscn_fid[2] = nportid & 0x000000FF; 3521 3522 phba->fc_stat.elsXmitRSCN++; 3523 elsiocb->iocb_cmpl = lpfc_cmpl_els_cmd; 3524 elsiocb->context1 = lpfc_nlp_get(ndlp); 3525 if (!elsiocb->context1) { 3526 lpfc_els_free_iocb(phba, elsiocb); 3527 return 1; 3528 } 3529 3530 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, 3531 "Issue RSCN: did:x%x", 3532 ndlp->nlp_DID, 0, 0); 3533 3534 rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0); 3535 if (rc == IOCB_ERROR) { 3536 lpfc_els_free_iocb(phba, elsiocb); 3537 lpfc_nlp_put(ndlp); 3538 return 1; 3539 } 3540 3541 /* This will cause the callback-function lpfc_cmpl_els_cmd to 3542 * trigger the release of node. 3543 */ 3544 if (!(vport->fc_flag & FC_PT2PT)) 3545 lpfc_nlp_put(ndlp); 3546 return 0; 3547 } 3548 3549 /** 3550 * lpfc_issue_els_farpr - Issue a farp to an node on a vport 3551 * @vport: pointer to a host virtual N_Port data structure. 3552 * @nportid: N_Port identifier to the remote node. 3553 * @retry: number of retries to the command IOCB. 3554 * 3555 * This routine issues a Fibre Channel Address Resolution Response 3556 * (FARPR) to a node on a vport. The remote node N_Port identifier (@nportid) 3557 * is passed into the function. It first search the @vport node list to find 3558 * the matching ndlp. If no such ndlp is found, a new ndlp shall be created 3559 * for this (FARPR) purpose. An IOCB is allocated, payload prepared, and the 3560 * lpfc_sli_issue_iocb() routine is invoked to send the FARPR ELS command. 3561 * 3562 * Note that the ndlp reference count will be incremented by 1 for holding the 3563 * ndlp and the reference to ndlp will be stored into the context1 field of 3564 * the IOCB for the completion callback function to the FARPR ELS command. 3565 * 3566 * Return code 3567 * 0 - Successfully issued farpr command 3568 * 1 - Failed to issue farpr command 3569 **/ 3570 static int 3571 lpfc_issue_els_farpr(struct lpfc_vport *vport, uint32_t nportid, uint8_t retry) 3572 { 3573 int rc = 0; 3574 struct lpfc_hba *phba = vport->phba; 3575 struct lpfc_iocbq *elsiocb; 3576 FARP *fp; 3577 uint8_t *pcmd; 3578 uint32_t *lp; 3579 uint16_t cmdsize; 3580 struct lpfc_nodelist *ondlp; 3581 struct lpfc_nodelist *ndlp; 3582 3583 cmdsize = (sizeof(uint32_t) + sizeof(FARP)); 3584 3585 ndlp = lpfc_findnode_did(vport, nportid); 3586 if (!ndlp) { 3587 ndlp = lpfc_nlp_init(vport, nportid); 3588 if (!ndlp) 3589 return 1; 3590 lpfc_enqueue_node(vport, ndlp); 3591 } 3592 3593 elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp, 3594 ndlp->nlp_DID, ELS_CMD_RNID); 3595 if (!elsiocb) 3596 return 1; 3597 3598 pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt); 3599 3600 *((uint32_t *) (pcmd)) = ELS_CMD_FARPR; 3601 pcmd += sizeof(uint32_t); 3602 3603 /* Fill in FARPR payload */ 3604 fp = (FARP *) (pcmd); 3605 memset(fp, 0, sizeof(FARP)); 3606 lp = (uint32_t *) pcmd; 3607 *lp++ = be32_to_cpu(nportid); 3608 *lp++ = be32_to_cpu(vport->fc_myDID); 3609 fp->Rflags = 0; 3610 fp->Mflags = (FARP_MATCH_PORT | FARP_MATCH_NODE); 3611 3612 memcpy(&fp->RportName, &vport->fc_portname, sizeof(struct lpfc_name)); 3613 memcpy(&fp->RnodeName, &vport->fc_nodename, sizeof(struct lpfc_name)); 3614 ondlp = lpfc_findnode_did(vport, nportid); 3615 if (ondlp) { 3616 memcpy(&fp->OportName, &ondlp->nlp_portname, 3617 sizeof(struct lpfc_name)); 3618 memcpy(&fp->OnodeName, &ondlp->nlp_nodename, 3619 sizeof(struct lpfc_name)); 3620 } 3621 3622 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, 3623 "Issue FARPR: did:x%x", 3624 ndlp->nlp_DID, 0, 0); 3625 3626 phba->fc_stat.elsXmitFARPR++; 3627 elsiocb->iocb_cmpl = lpfc_cmpl_els_cmd; 3628 elsiocb->context1 = lpfc_nlp_get(ndlp); 3629 if (!elsiocb->context1) { 3630 lpfc_els_free_iocb(phba, elsiocb); 3631 return 1; 3632 } 3633 3634 rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0); 3635 if (rc == IOCB_ERROR) { 3636 /* The additional lpfc_nlp_put will cause the following 3637 * lpfc_els_free_iocb routine to trigger the release of 3638 * the node. 3639 */ 3640 lpfc_els_free_iocb(phba, elsiocb); 3641 lpfc_nlp_put(ndlp); 3642 return 1; 3643 } 3644 /* This will cause the callback-function lpfc_cmpl_els_cmd to 3645 * trigger the release of the node. 3646 */ 3647 /* Don't release reference count as RDF is likely outstanding */ 3648 return 0; 3649 } 3650 3651 /** 3652 * lpfc_issue_els_rdf - Register for diagnostic functions from the fabric. 3653 * @vport: pointer to a host virtual N_Port data structure. 3654 * @retry: retry counter for the command IOCB. 3655 * 3656 * This routine issues an ELS RDF to the Fabric Controller to register 3657 * for diagnostic functions. 3658 * 3659 * Note that the ndlp reference count will be incremented by 1 for holding the 3660 * ndlp and the reference to ndlp will be stored into the context1 field of 3661 * the IOCB for the completion callback function to the RDF ELS command. 3662 * 3663 * Return code 3664 * 0 - Successfully issued rdf command 3665 * 1 - Failed to issue rdf command 3666 **/ 3667 int 3668 lpfc_issue_els_rdf(struct lpfc_vport *vport, uint8_t retry) 3669 { 3670 struct lpfc_hba *phba = vport->phba; 3671 struct lpfc_iocbq *elsiocb; 3672 struct lpfc_els_rdf_req *prdf; 3673 struct lpfc_nodelist *ndlp; 3674 uint16_t cmdsize; 3675 int rc; 3676 3677 cmdsize = sizeof(*prdf); 3678 3679 ndlp = lpfc_findnode_did(vport, Fabric_Cntl_DID); 3680 if (!ndlp) { 3681 ndlp = lpfc_nlp_init(vport, Fabric_Cntl_DID); 3682 if (!ndlp) 3683 return -ENODEV; 3684 lpfc_enqueue_node(vport, ndlp); 3685 } 3686 3687 /* RDF ELS is not required on an NPIV VN_Port. */ 3688 if (vport->port_type == LPFC_NPIV_PORT) 3689 return -EACCES; 3690 3691 elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp, 3692 ndlp->nlp_DID, ELS_CMD_RDF); 3693 if (!elsiocb) 3694 return -ENOMEM; 3695 3696 /* Configure the payload for the supported FPIN events. */ 3697 prdf = (struct lpfc_els_rdf_req *) 3698 (((struct lpfc_dmabuf *)elsiocb->context2)->virt); 3699 memset(prdf, 0, cmdsize); 3700 prdf->rdf.fpin_cmd = ELS_RDF; 3701 prdf->rdf.desc_len = cpu_to_be32(sizeof(struct lpfc_els_rdf_req) - 3702 sizeof(struct fc_els_rdf)); 3703 prdf->reg_d1.reg_desc.desc_tag = cpu_to_be32(ELS_DTAG_FPIN_REGISTER); 3704 prdf->reg_d1.reg_desc.desc_len = cpu_to_be32( 3705 FC_TLV_DESC_LENGTH_FROM_SZ(prdf->reg_d1)); 3706 prdf->reg_d1.reg_desc.count = cpu_to_be32(ELS_RDF_REG_TAG_CNT); 3707 prdf->reg_d1.desc_tags[0] = cpu_to_be32(ELS_DTAG_LNK_INTEGRITY); 3708 prdf->reg_d1.desc_tags[1] = cpu_to_be32(ELS_DTAG_DELIVERY); 3709 prdf->reg_d1.desc_tags[2] = cpu_to_be32(ELS_DTAG_PEER_CONGEST); 3710 prdf->reg_d1.desc_tags[3] = cpu_to_be32(ELS_DTAG_CONGESTION); 3711 3712 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS | LOG_CGN_MGMT, 3713 "6444 Xmit RDF to remote NPORT x%x Reg: %x %x\n", 3714 ndlp->nlp_DID, phba->cgn_reg_signal, 3715 phba->cgn_reg_fpin); 3716 3717 phba->cgn_fpin_frequency = LPFC_FPIN_INIT_FREQ; 3718 elsiocb->iocb_cmpl = lpfc_cmpl_els_disc_cmd; 3719 elsiocb->context1 = lpfc_nlp_get(ndlp); 3720 if (!elsiocb->context1) { 3721 lpfc_els_free_iocb(phba, elsiocb); 3722 return -EIO; 3723 } 3724 3725 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, 3726 "Issue RDF: did:x%x refcnt %d", 3727 ndlp->nlp_DID, kref_read(&ndlp->kref), 0); 3728 3729 rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0); 3730 if (rc == IOCB_ERROR) { 3731 lpfc_els_free_iocb(phba, elsiocb); 3732 lpfc_nlp_put(ndlp); 3733 return -EIO; 3734 } 3735 return 0; 3736 } 3737 3738 /** 3739 * lpfc_els_rcv_rdf - Receive RDF ELS request from the fabric. 3740 * @vport: pointer to a host virtual N_Port data structure. 3741 * @cmdiocb: pointer to lpfc command iocb data structure. 3742 * @ndlp: pointer to a node-list data structure. 3743 * 3744 * A received RDF implies a possible change to fabric supported diagnostic 3745 * functions. This routine sends LS_ACC and then has the Nx_Port issue a new 3746 * RDF request to reregister for supported diagnostic functions. 3747 * 3748 * Return code 3749 * 0 - Success 3750 * -EIO - Failed to process received RDF 3751 **/ 3752 static int 3753 lpfc_els_rcv_rdf(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb, 3754 struct lpfc_nodelist *ndlp) 3755 { 3756 /* Send LS_ACC */ 3757 if (lpfc_els_rsp_acc(vport, ELS_CMD_RDF, cmdiocb, ndlp, NULL)) { 3758 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS | LOG_CGN_MGMT, 3759 "1623 Failed to RDF_ACC from x%x for x%x\n", 3760 ndlp->nlp_DID, vport->fc_myDID); 3761 return -EIO; 3762 } 3763 3764 /* Issue new RDF for reregistering */ 3765 if (lpfc_issue_els_rdf(vport, 0)) { 3766 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS | LOG_CGN_MGMT, 3767 "2623 Failed to re register RDF for x%x\n", 3768 vport->fc_myDID); 3769 return -EIO; 3770 } 3771 3772 return 0; 3773 } 3774 3775 /** 3776 * lpfc_least_capable_settings - helper function for EDC rsp processing 3777 * @phba: pointer to lpfc hba data structure. 3778 * @pcgd: pointer to congestion detection descriptor in EDC rsp. 3779 * 3780 * This helper routine determines the least capable setting for 3781 * congestion signals, signal freq, including scale, from the 3782 * congestion detection descriptor in the EDC rsp. The routine 3783 * sets @phba values in preparation for a set_featues mailbox. 3784 **/ 3785 static void 3786 lpfc_least_capable_settings(struct lpfc_hba *phba, 3787 struct fc_diag_cg_sig_desc *pcgd) 3788 { 3789 u32 rsp_sig_cap = 0, drv_sig_cap = 0; 3790 u32 rsp_sig_freq_cyc = 0, rsp_sig_freq_scale = 0; 3791 struct lpfc_cgn_info *cp; 3792 u32 crc; 3793 u16 sig_freq; 3794 3795 /* Get rsp signal and frequency capabilities. */ 3796 rsp_sig_cap = be32_to_cpu(pcgd->xmt_signal_capability); 3797 rsp_sig_freq_cyc = be16_to_cpu(pcgd->xmt_signal_frequency.count); 3798 rsp_sig_freq_scale = be16_to_cpu(pcgd->xmt_signal_frequency.units); 3799 3800 /* If the Fport does not support signals. Set FPIN only */ 3801 if (rsp_sig_cap == EDC_CG_SIG_NOTSUPPORTED) 3802 goto out_no_support; 3803 3804 /* Apply the xmt scale to the xmt cycle to get the correct frequency. 3805 * Adapter default is 100 millisSeconds. Convert all xmt cycle values 3806 * to milliSeconds. 3807 */ 3808 switch (rsp_sig_freq_scale) { 3809 case EDC_CG_SIGFREQ_SEC: 3810 rsp_sig_freq_cyc *= MSEC_PER_SEC; 3811 break; 3812 case EDC_CG_SIGFREQ_MSEC: 3813 rsp_sig_freq_cyc = 1; 3814 break; 3815 default: 3816 goto out_no_support; 3817 } 3818 3819 /* Convenient shorthand. */ 3820 drv_sig_cap = phba->cgn_reg_signal; 3821 3822 /* Choose the least capable frequency. */ 3823 if (rsp_sig_freq_cyc > phba->cgn_sig_freq) 3824 phba->cgn_sig_freq = rsp_sig_freq_cyc; 3825 3826 /* Should be some common signals support. Settle on least capable 3827 * signal and adjust FPIN values. Initialize defaults to ease the 3828 * decision. 3829 */ 3830 phba->cgn_reg_fpin = LPFC_CGN_FPIN_WARN | LPFC_CGN_FPIN_ALARM; 3831 phba->cgn_reg_signal = EDC_CG_SIG_NOTSUPPORTED; 3832 if (rsp_sig_cap == EDC_CG_SIG_WARN_ONLY && 3833 (drv_sig_cap == EDC_CG_SIG_WARN_ONLY || 3834 drv_sig_cap == EDC_CG_SIG_WARN_ALARM)) { 3835 phba->cgn_reg_signal = EDC_CG_SIG_WARN_ONLY; 3836 phba->cgn_reg_fpin &= ~LPFC_CGN_FPIN_WARN; 3837 } 3838 if (rsp_sig_cap == EDC_CG_SIG_WARN_ALARM) { 3839 if (drv_sig_cap == EDC_CG_SIG_WARN_ALARM) { 3840 phba->cgn_reg_signal = EDC_CG_SIG_WARN_ALARM; 3841 phba->cgn_reg_fpin = LPFC_CGN_FPIN_NONE; 3842 } 3843 if (drv_sig_cap == EDC_CG_SIG_WARN_ONLY) { 3844 phba->cgn_reg_signal = EDC_CG_SIG_WARN_ONLY; 3845 phba->cgn_reg_fpin &= ~LPFC_CGN_FPIN_WARN; 3846 } 3847 } 3848 3849 if (!phba->cgn_i) 3850 return; 3851 3852 /* Update signal frequency in congestion info buffer */ 3853 cp = (struct lpfc_cgn_info *)phba->cgn_i->virt; 3854 3855 /* Frequency (in ms) Signal Warning/Signal Congestion Notifications 3856 * are received by the HBA 3857 */ 3858 sig_freq = phba->cgn_sig_freq; 3859 3860 if (phba->cgn_reg_signal == EDC_CG_SIG_WARN_ONLY) 3861 cp->cgn_warn_freq = cpu_to_le16(sig_freq); 3862 if (phba->cgn_reg_signal == EDC_CG_SIG_WARN_ALARM) { 3863 cp->cgn_alarm_freq = cpu_to_le16(sig_freq); 3864 cp->cgn_warn_freq = cpu_to_le16(sig_freq); 3865 } 3866 crc = lpfc_cgn_calc_crc32(cp, LPFC_CGN_INFO_SZ, LPFC_CGN_CRC32_SEED); 3867 cp->cgn_info_crc = cpu_to_le32(crc); 3868 return; 3869 3870 out_no_support: 3871 phba->cgn_reg_signal = EDC_CG_SIG_NOTSUPPORTED; 3872 phba->cgn_sig_freq = 0; 3873 phba->cgn_reg_fpin = LPFC_CGN_FPIN_ALARM | LPFC_CGN_FPIN_WARN; 3874 } 3875 3876 DECLARE_ENUM2STR_LOOKUP(lpfc_get_tlv_dtag_nm, fc_ls_tlv_dtag, 3877 FC_LS_TLV_DTAG_INIT); 3878 3879 /** 3880 * lpfc_cmpl_els_edc - Completion callback function for EDC 3881 * @phba: pointer to lpfc hba data structure. 3882 * @cmdiocb: pointer to lpfc command iocb data structure. 3883 * @rspiocb: pointer to lpfc response iocb data structure. 3884 * 3885 * This routine is the completion callback function for issuing the Exchange 3886 * Diagnostic Capabilities (EDC) command. The driver issues an EDC to 3887 * notify the FPort of its Congestion and Link Fault capabilities. This 3888 * routine parses the FPort's response and decides on the least common 3889 * values applicable to both FPort and NPort for Warnings and Alarms that 3890 * are communicated via hardware signals. 3891 **/ 3892 static void 3893 lpfc_cmpl_els_edc(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb, 3894 struct lpfc_iocbq *rspiocb) 3895 { 3896 IOCB_t *irsp; 3897 struct fc_els_edc_resp *edc_rsp; 3898 struct fc_tlv_desc *tlv; 3899 struct fc_diag_cg_sig_desc *pcgd; 3900 struct fc_diag_lnkflt_desc *plnkflt; 3901 struct lpfc_dmabuf *pcmd, *prsp; 3902 const char *dtag_nm; 3903 u32 *pdata, dtag; 3904 int desc_cnt = 0, bytes_remain; 3905 bool rcv_cap_desc = false; 3906 struct lpfc_nodelist *ndlp; 3907 3908 irsp = &rspiocb->iocb; 3909 ndlp = cmdiocb->context1; 3910 3911 lpfc_debugfs_disc_trc(phba->pport, LPFC_DISC_TRC_ELS_CMD, 3912 "EDC cmpl: status:x%x/x%x did:x%x", 3913 irsp->ulpStatus, irsp->un.ulpWord[4], 3914 irsp->un.elsreq64.remoteID); 3915 3916 /* ELS cmd tag <ulpIoTag> completes */ 3917 lpfc_printf_log(phba, KERN_INFO, LOG_ELS | LOG_CGN_MGMT, 3918 "4201 EDC cmd tag x%x completes Data: x%x x%x x%x\n", 3919 irsp->ulpIoTag, irsp->ulpStatus, 3920 irsp->un.ulpWord[4], irsp->ulpTimeout); 3921 3922 pcmd = (struct lpfc_dmabuf *)cmdiocb->context2; 3923 if (!pcmd) 3924 goto out; 3925 3926 pdata = (u32 *)pcmd->virt; 3927 if (!pdata) 3928 goto out; 3929 3930 /* Need to clear signal values, send features MB and RDF with FPIN. */ 3931 if (irsp->ulpStatus) 3932 goto out; 3933 3934 prsp = list_get_first(&pcmd->list, struct lpfc_dmabuf, list); 3935 if (!prsp) 3936 goto out; 3937 3938 edc_rsp = prsp->virt; 3939 if (!edc_rsp) 3940 goto out; 3941 3942 /* ELS cmd tag <ulpIoTag> completes */ 3943 lpfc_printf_log(phba, KERN_INFO, LOG_ELS | LOG_CGN_MGMT, 3944 "4676 Fabric EDC Rsp: " 3945 "0x%02x, 0x%08x\n", 3946 edc_rsp->acc_hdr.la_cmd, 3947 be32_to_cpu(edc_rsp->desc_list_len)); 3948 3949 /* 3950 * Payload length in bytes is the response descriptor list 3951 * length minus the 12 bytes of Link Service Request 3952 * Information descriptor in the reply. 3953 */ 3954 bytes_remain = be32_to_cpu(edc_rsp->desc_list_len) - 3955 sizeof(struct fc_els_lsri_desc); 3956 if (bytes_remain <= 0) 3957 goto out; 3958 3959 tlv = edc_rsp->desc; 3960 3961 /* 3962 * cycle through EDC diagnostic descriptors to find the 3963 * congestion signaling capability descriptor 3964 */ 3965 while (bytes_remain) { 3966 if (bytes_remain < FC_TLV_DESC_HDR_SZ) { 3967 lpfc_printf_log(phba, KERN_WARNING, LOG_CGN_MGMT, 3968 "6461 Truncated TLV hdr on " 3969 "Diagnostic descriptor[%d]\n", 3970 desc_cnt); 3971 goto out; 3972 } 3973 3974 dtag = be32_to_cpu(tlv->desc_tag); 3975 switch (dtag) { 3976 case ELS_DTAG_LNK_FAULT_CAP: 3977 if (bytes_remain < FC_TLV_DESC_SZ_FROM_LENGTH(tlv) || 3978 FC_TLV_DESC_SZ_FROM_LENGTH(tlv) != 3979 sizeof(struct fc_diag_lnkflt_desc)) { 3980 lpfc_printf_log( 3981 phba, KERN_WARNING, LOG_CGN_MGMT, 3982 "6462 Truncated Link Fault Diagnostic " 3983 "descriptor[%d]: %d vs 0x%zx 0x%zx\n", 3984 desc_cnt, bytes_remain, 3985 FC_TLV_DESC_SZ_FROM_LENGTH(tlv), 3986 sizeof(struct fc_diag_cg_sig_desc)); 3987 goto out; 3988 } 3989 plnkflt = (struct fc_diag_lnkflt_desc *)tlv; 3990 lpfc_printf_log( 3991 phba, KERN_INFO, LOG_ELS | LOG_CGN_MGMT, 3992 "4617 Link Fault Desc Data: 0x%08x 0x%08x " 3993 "0x%08x 0x%08x 0x%08x\n", 3994 be32_to_cpu(plnkflt->desc_tag), 3995 be32_to_cpu(plnkflt->desc_len), 3996 be32_to_cpu( 3997 plnkflt->degrade_activate_threshold), 3998 be32_to_cpu( 3999 plnkflt->degrade_deactivate_threshold), 4000 be32_to_cpu(plnkflt->fec_degrade_interval)); 4001 break; 4002 case ELS_DTAG_CG_SIGNAL_CAP: 4003 if (bytes_remain < FC_TLV_DESC_SZ_FROM_LENGTH(tlv) || 4004 FC_TLV_DESC_SZ_FROM_LENGTH(tlv) != 4005 sizeof(struct fc_diag_cg_sig_desc)) { 4006 lpfc_printf_log( 4007 phba, KERN_WARNING, LOG_CGN_MGMT, 4008 "6463 Truncated Cgn Signal Diagnostic " 4009 "descriptor[%d]: %d vs 0x%zx 0x%zx\n", 4010 desc_cnt, bytes_remain, 4011 FC_TLV_DESC_SZ_FROM_LENGTH(tlv), 4012 sizeof(struct fc_diag_cg_sig_desc)); 4013 goto out; 4014 } 4015 4016 pcgd = (struct fc_diag_cg_sig_desc *)tlv; 4017 lpfc_printf_log( 4018 phba, KERN_INFO, LOG_ELS | LOG_CGN_MGMT, 4019 "4616 CGN Desc Data: 0x%08x 0x%08x " 4020 "0x%08x 0x%04x 0x%04x 0x%08x 0x%04x 0x%04x\n", 4021 be32_to_cpu(pcgd->desc_tag), 4022 be32_to_cpu(pcgd->desc_len), 4023 be32_to_cpu(pcgd->xmt_signal_capability), 4024 be32_to_cpu(pcgd->xmt_signal_frequency.count), 4025 be32_to_cpu(pcgd->xmt_signal_frequency.units), 4026 be32_to_cpu(pcgd->rcv_signal_capability), 4027 be32_to_cpu(pcgd->rcv_signal_frequency.count), 4028 be32_to_cpu(pcgd->rcv_signal_frequency.units)); 4029 4030 /* Compare driver and Fport capabilities and choose 4031 * least common. 4032 */ 4033 lpfc_least_capable_settings(phba, pcgd); 4034 rcv_cap_desc = true; 4035 break; 4036 default: 4037 dtag_nm = lpfc_get_tlv_dtag_nm(dtag); 4038 lpfc_printf_log(phba, KERN_WARNING, LOG_CGN_MGMT, 4039 "4919 unknown Diagnostic " 4040 "Descriptor[%d]: tag x%x (%s)\n", 4041 desc_cnt, dtag, dtag_nm); 4042 } 4043 4044 bytes_remain -= FC_TLV_DESC_SZ_FROM_LENGTH(tlv); 4045 tlv = fc_tlv_next_desc(tlv); 4046 desc_cnt++; 4047 } 4048 4049 out: 4050 if (!rcv_cap_desc) { 4051 phba->cgn_reg_fpin = LPFC_CGN_FPIN_ALARM | LPFC_CGN_FPIN_WARN; 4052 phba->cgn_reg_signal = EDC_CG_SIG_NOTSUPPORTED; 4053 phba->cgn_sig_freq = 0; 4054 lpfc_printf_log(phba, KERN_WARNING, LOG_ELS | LOG_CGN_MGMT, 4055 "4202 EDC rsp error - sending RDF " 4056 "for FPIN only.\n"); 4057 } 4058 4059 lpfc_config_cgn_signal(phba); 4060 4061 /* Check to see if link went down during discovery */ 4062 lpfc_els_chk_latt(phba->pport); 4063 lpfc_debugfs_disc_trc(phba->pport, LPFC_DISC_TRC_ELS_CMD, 4064 "EDC Cmpl: did:x%x refcnt %d", 4065 ndlp->nlp_DID, kref_read(&ndlp->kref), 0); 4066 lpfc_els_free_iocb(phba, cmdiocb); 4067 lpfc_nlp_put(ndlp); 4068 } 4069 4070 static void 4071 lpfc_format_edc_cgn_desc(struct lpfc_hba *phba, struct fc_diag_cg_sig_desc *cgd) 4072 { 4073 /* We are assuming cgd was zero'ed before calling this routine */ 4074 4075 /* Configure the congestion detection capability */ 4076 cgd->desc_tag = cpu_to_be32(ELS_DTAG_CG_SIGNAL_CAP); 4077 4078 /* Descriptor len doesn't include the tag or len fields. */ 4079 cgd->desc_len = cpu_to_be32( 4080 FC_TLV_DESC_LENGTH_FROM_SZ(struct fc_diag_cg_sig_desc)); 4081 4082 /* xmt_signal_capability already set to EDC_CG_SIG_NOTSUPPORTED. 4083 * xmt_signal_frequency.count already set to 0. 4084 * xmt_signal_frequency.units already set to 0. 4085 */ 4086 4087 if (phba->cmf_active_mode == LPFC_CFG_OFF) { 4088 /* rcv_signal_capability already set to EDC_CG_SIG_NOTSUPPORTED. 4089 * rcv_signal_frequency.count already set to 0. 4090 * rcv_signal_frequency.units already set to 0. 4091 */ 4092 phba->cgn_sig_freq = 0; 4093 return; 4094 } 4095 switch (phba->cgn_reg_signal) { 4096 case EDC_CG_SIG_WARN_ONLY: 4097 cgd->rcv_signal_capability = cpu_to_be32(EDC_CG_SIG_WARN_ONLY); 4098 break; 4099 case EDC_CG_SIG_WARN_ALARM: 4100 cgd->rcv_signal_capability = cpu_to_be32(EDC_CG_SIG_WARN_ALARM); 4101 break; 4102 default: 4103 /* rcv_signal_capability left 0 thus no support */ 4104 break; 4105 } 4106 4107 /* We start negotiation with lpfc_fabric_cgn_frequency, after 4108 * the completion we settle on the higher frequency. 4109 */ 4110 cgd->rcv_signal_frequency.count = 4111 cpu_to_be16(lpfc_fabric_cgn_frequency); 4112 cgd->rcv_signal_frequency.units = 4113 cpu_to_be16(EDC_CG_SIGFREQ_MSEC); 4114 } 4115 4116 /** 4117 * lpfc_issue_els_edc - Exchange Diagnostic Capabilities with the fabric. 4118 * @vport: pointer to a host virtual N_Port data structure. 4119 * @retry: retry counter for the command iocb. 4120 * 4121 * This routine issues an ELS EDC to the F-Port Controller to communicate 4122 * this N_Port's support of hardware signals in its Congestion 4123 * Capabilities Descriptor. 4124 * 4125 * Note: This routine does not check if one or more signals are 4126 * set in the cgn_reg_signal parameter. The caller makes the 4127 * decision to enforce cgn_reg_signal as nonzero or zero depending 4128 * on the conditions. During Fabric requests, the driver 4129 * requires cgn_reg_signals to be nonzero. But a dynamic request 4130 * to set the congestion mode to OFF from Monitor or Manage 4131 * would correctly issue an EDC with no signals enabled to 4132 * turn off switch functionality and then update the FW. 4133 * 4134 * Return code 4135 * 0 - Successfully issued edc command 4136 * 1 - Failed to issue edc command 4137 **/ 4138 int 4139 lpfc_issue_els_edc(struct lpfc_vport *vport, uint8_t retry) 4140 { 4141 struct lpfc_hba *phba = vport->phba; 4142 struct lpfc_iocbq *elsiocb; 4143 struct lpfc_els_edc_req *edc_req; 4144 struct fc_diag_cg_sig_desc *cgn_desc; 4145 u16 cmdsize; 4146 struct lpfc_nodelist *ndlp; 4147 u8 *pcmd = NULL; 4148 u32 edc_req_size, cgn_desc_size; 4149 int rc; 4150 4151 if (vport->port_type == LPFC_NPIV_PORT) 4152 return -EACCES; 4153 4154 ndlp = lpfc_findnode_did(vport, Fabric_DID); 4155 if (!ndlp || ndlp->nlp_state != NLP_STE_UNMAPPED_NODE) 4156 return -ENODEV; 4157 4158 /* If HBA doesn't support signals, drop into RDF */ 4159 if (!phba->cgn_init_reg_signal) 4160 goto try_rdf; 4161 4162 edc_req_size = sizeof(struct fc_els_edc); 4163 cgn_desc_size = sizeof(struct fc_diag_cg_sig_desc); 4164 cmdsize = edc_req_size + cgn_desc_size; 4165 elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp, 4166 ndlp->nlp_DID, ELS_CMD_EDC); 4167 if (!elsiocb) 4168 goto try_rdf; 4169 4170 /* Configure the payload for the supported Diagnostics capabilities. */ 4171 pcmd = (u8 *)(((struct lpfc_dmabuf *)elsiocb->context2)->virt); 4172 memset(pcmd, 0, cmdsize); 4173 edc_req = (struct lpfc_els_edc_req *)pcmd; 4174 edc_req->edc.desc_len = cpu_to_be32(cgn_desc_size); 4175 edc_req->edc.edc_cmd = ELS_EDC; 4176 4177 cgn_desc = &edc_req->cgn_desc; 4178 4179 lpfc_format_edc_cgn_desc(phba, cgn_desc); 4180 4181 phba->cgn_sig_freq = lpfc_fabric_cgn_frequency; 4182 4183 lpfc_printf_vlog(vport, KERN_INFO, LOG_CGN_MGMT, 4184 "4623 Xmit EDC to remote " 4185 "NPORT x%x reg_sig x%x reg_fpin:x%x\n", 4186 ndlp->nlp_DID, phba->cgn_reg_signal, 4187 phba->cgn_reg_fpin); 4188 4189 elsiocb->iocb_cmpl = lpfc_cmpl_els_disc_cmd; 4190 elsiocb->context1 = lpfc_nlp_get(ndlp); 4191 if (!elsiocb->context1) { 4192 lpfc_els_free_iocb(phba, elsiocb); 4193 return -EIO; 4194 } 4195 4196 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, 4197 "Issue EDC: did:x%x refcnt %d", 4198 ndlp->nlp_DID, kref_read(&ndlp->kref), 0); 4199 rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0); 4200 if (rc == IOCB_ERROR) { 4201 /* The additional lpfc_nlp_put will cause the following 4202 * lpfc_els_free_iocb routine to trigger the rlease of 4203 * the node. 4204 */ 4205 lpfc_els_free_iocb(phba, elsiocb); 4206 lpfc_nlp_put(ndlp); 4207 goto try_rdf; 4208 } 4209 return 0; 4210 try_rdf: 4211 phba->cgn_reg_fpin = LPFC_CGN_FPIN_WARN | LPFC_CGN_FPIN_ALARM; 4212 phba->cgn_reg_signal = EDC_CG_SIG_NOTSUPPORTED; 4213 rc = lpfc_issue_els_rdf(vport, 0); 4214 return rc; 4215 } 4216 4217 /** 4218 * lpfc_cancel_retry_delay_tmo - Cancel the timer with delayed iocb-cmd retry 4219 * @vport: pointer to a host virtual N_Port data structure. 4220 * @nlp: pointer to a node-list data structure. 4221 * 4222 * This routine cancels the timer with a delayed IOCB-command retry for 4223 * a @vport's @ndlp. It stops the timer for the delayed function retrial and 4224 * removes the ELS retry event if it presents. In addition, if the 4225 * NLP_NPR_2B_DISC bit is set in the @nlp's nlp_flag bitmap, ADISC IOCB 4226 * commands are sent for the @vport's nodes that require issuing discovery 4227 * ADISC. 4228 **/ 4229 void 4230 lpfc_cancel_retry_delay_tmo(struct lpfc_vport *vport, struct lpfc_nodelist *nlp) 4231 { 4232 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 4233 struct lpfc_work_evt *evtp; 4234 4235 if (!(nlp->nlp_flag & NLP_DELAY_TMO)) 4236 return; 4237 spin_lock_irq(&nlp->lock); 4238 nlp->nlp_flag &= ~NLP_DELAY_TMO; 4239 spin_unlock_irq(&nlp->lock); 4240 del_timer_sync(&nlp->nlp_delayfunc); 4241 nlp->nlp_last_elscmd = 0; 4242 if (!list_empty(&nlp->els_retry_evt.evt_listp)) { 4243 list_del_init(&nlp->els_retry_evt.evt_listp); 4244 /* Decrement nlp reference count held for the delayed retry */ 4245 evtp = &nlp->els_retry_evt; 4246 lpfc_nlp_put((struct lpfc_nodelist *)evtp->evt_arg1); 4247 } 4248 if (nlp->nlp_flag & NLP_NPR_2B_DISC) { 4249 spin_lock_irq(&nlp->lock); 4250 nlp->nlp_flag &= ~NLP_NPR_2B_DISC; 4251 spin_unlock_irq(&nlp->lock); 4252 if (vport->num_disc_nodes) { 4253 if (vport->port_state < LPFC_VPORT_READY) { 4254 /* Check if there are more ADISCs to be sent */ 4255 lpfc_more_adisc(vport); 4256 } else { 4257 /* Check if there are more PLOGIs to be sent */ 4258 lpfc_more_plogi(vport); 4259 if (vport->num_disc_nodes == 0) { 4260 spin_lock_irq(shost->host_lock); 4261 vport->fc_flag &= ~FC_NDISC_ACTIVE; 4262 spin_unlock_irq(shost->host_lock); 4263 lpfc_can_disctmo(vport); 4264 lpfc_end_rscn(vport); 4265 } 4266 } 4267 } 4268 } 4269 return; 4270 } 4271 4272 /** 4273 * lpfc_els_retry_delay - Timer function with a ndlp delayed function timer 4274 * @t: pointer to the timer function associated data (ndlp). 4275 * 4276 * This routine is invoked by the ndlp delayed-function timer to check 4277 * whether there is any pending ELS retry event(s) with the node. If not, it 4278 * simply returns. Otherwise, if there is at least one ELS delayed event, it 4279 * adds the delayed events to the HBA work list and invokes the 4280 * lpfc_worker_wake_up() routine to wake up worker thread to process the 4281 * event. Note that lpfc_nlp_get() is called before posting the event to 4282 * the work list to hold reference count of ndlp so that it guarantees the 4283 * reference to ndlp will still be available when the worker thread gets 4284 * to the event associated with the ndlp. 4285 **/ 4286 void 4287 lpfc_els_retry_delay(struct timer_list *t) 4288 { 4289 struct lpfc_nodelist *ndlp = from_timer(ndlp, t, nlp_delayfunc); 4290 struct lpfc_vport *vport = ndlp->vport; 4291 struct lpfc_hba *phba = vport->phba; 4292 unsigned long flags; 4293 struct lpfc_work_evt *evtp = &ndlp->els_retry_evt; 4294 4295 spin_lock_irqsave(&phba->hbalock, flags); 4296 if (!list_empty(&evtp->evt_listp)) { 4297 spin_unlock_irqrestore(&phba->hbalock, flags); 4298 return; 4299 } 4300 4301 /* We need to hold the node by incrementing the reference 4302 * count until the queued work is done 4303 */ 4304 evtp->evt_arg1 = lpfc_nlp_get(ndlp); 4305 if (evtp->evt_arg1) { 4306 evtp->evt = LPFC_EVT_ELS_RETRY; 4307 list_add_tail(&evtp->evt_listp, &phba->work_list); 4308 lpfc_worker_wake_up(phba); 4309 } 4310 spin_unlock_irqrestore(&phba->hbalock, flags); 4311 return; 4312 } 4313 4314 /** 4315 * lpfc_els_retry_delay_handler - Work thread handler for ndlp delayed function 4316 * @ndlp: pointer to a node-list data structure. 4317 * 4318 * This routine is the worker-thread handler for processing the @ndlp delayed 4319 * event(s), posted by the lpfc_els_retry_delay() routine. It simply retrieves 4320 * the last ELS command from the associated ndlp and invokes the proper ELS 4321 * function according to the delayed ELS command to retry the command. 4322 **/ 4323 void 4324 lpfc_els_retry_delay_handler(struct lpfc_nodelist *ndlp) 4325 { 4326 struct lpfc_vport *vport = ndlp->vport; 4327 uint32_t cmd, retry; 4328 4329 spin_lock_irq(&ndlp->lock); 4330 cmd = ndlp->nlp_last_elscmd; 4331 ndlp->nlp_last_elscmd = 0; 4332 4333 if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) { 4334 spin_unlock_irq(&ndlp->lock); 4335 return; 4336 } 4337 4338 ndlp->nlp_flag &= ~NLP_DELAY_TMO; 4339 spin_unlock_irq(&ndlp->lock); 4340 /* 4341 * If a discovery event readded nlp_delayfunc after timer 4342 * firing and before processing the timer, cancel the 4343 * nlp_delayfunc. 4344 */ 4345 del_timer_sync(&ndlp->nlp_delayfunc); 4346 retry = ndlp->nlp_retry; 4347 ndlp->nlp_retry = 0; 4348 4349 switch (cmd) { 4350 case ELS_CMD_FLOGI: 4351 lpfc_issue_els_flogi(vport, ndlp, retry); 4352 break; 4353 case ELS_CMD_PLOGI: 4354 if (!lpfc_issue_els_plogi(vport, ndlp->nlp_DID, retry)) { 4355 ndlp->nlp_prev_state = ndlp->nlp_state; 4356 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE); 4357 } 4358 break; 4359 case ELS_CMD_ADISC: 4360 if (!lpfc_issue_els_adisc(vport, ndlp, retry)) { 4361 ndlp->nlp_prev_state = ndlp->nlp_state; 4362 lpfc_nlp_set_state(vport, ndlp, NLP_STE_ADISC_ISSUE); 4363 } 4364 break; 4365 case ELS_CMD_PRLI: 4366 case ELS_CMD_NVMEPRLI: 4367 if (!lpfc_issue_els_prli(vport, ndlp, retry)) { 4368 ndlp->nlp_prev_state = ndlp->nlp_state; 4369 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PRLI_ISSUE); 4370 } 4371 break; 4372 case ELS_CMD_LOGO: 4373 if (!lpfc_issue_els_logo(vport, ndlp, retry)) { 4374 ndlp->nlp_prev_state = ndlp->nlp_state; 4375 lpfc_nlp_set_state(vport, ndlp, NLP_STE_LOGO_ISSUE); 4376 } 4377 break; 4378 case ELS_CMD_FDISC: 4379 if (!(vport->fc_flag & FC_VPORT_NEEDS_INIT_VPI)) 4380 lpfc_issue_els_fdisc(vport, ndlp, retry); 4381 break; 4382 } 4383 return; 4384 } 4385 4386 /** 4387 * lpfc_link_reset - Issue link reset 4388 * @vport: pointer to a virtual N_Port data structure. 4389 * 4390 * This routine performs link reset by sending INIT_LINK mailbox command. 4391 * For SLI-3 adapter, link attention interrupt is enabled before issuing 4392 * INIT_LINK mailbox command. 4393 * 4394 * Return code 4395 * 0 - Link reset initiated successfully 4396 * 1 - Failed to initiate link reset 4397 **/ 4398 int 4399 lpfc_link_reset(struct lpfc_vport *vport) 4400 { 4401 struct lpfc_hba *phba = vport->phba; 4402 LPFC_MBOXQ_t *mbox; 4403 uint32_t control; 4404 int rc; 4405 4406 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS, 4407 "2851 Attempt link reset\n"); 4408 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 4409 if (!mbox) { 4410 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 4411 "2852 Failed to allocate mbox memory"); 4412 return 1; 4413 } 4414 4415 /* Enable Link attention interrupts */ 4416 if (phba->sli_rev <= LPFC_SLI_REV3) { 4417 spin_lock_irq(&phba->hbalock); 4418 phba->sli.sli_flag |= LPFC_PROCESS_LA; 4419 control = readl(phba->HCregaddr); 4420 control |= HC_LAINT_ENA; 4421 writel(control, phba->HCregaddr); 4422 readl(phba->HCregaddr); /* flush */ 4423 spin_unlock_irq(&phba->hbalock); 4424 } 4425 4426 lpfc_init_link(phba, mbox, phba->cfg_topology, 4427 phba->cfg_link_speed); 4428 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl; 4429 mbox->vport = vport; 4430 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT); 4431 if ((rc != MBX_BUSY) && (rc != MBX_SUCCESS)) { 4432 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 4433 "2853 Failed to issue INIT_LINK " 4434 "mbox command, rc:x%x\n", rc); 4435 mempool_free(mbox, phba->mbox_mem_pool); 4436 return 1; 4437 } 4438 4439 return 0; 4440 } 4441 4442 /** 4443 * lpfc_els_retry - Make retry decision on an els command iocb 4444 * @phba: pointer to lpfc hba data structure. 4445 * @cmdiocb: pointer to lpfc command iocb data structure. 4446 * @rspiocb: pointer to lpfc response iocb data structure. 4447 * 4448 * This routine makes a retry decision on an ELS command IOCB, which has 4449 * failed. The following ELS IOCBs use this function for retrying the command 4450 * when previously issued command responsed with error status: FLOGI, PLOGI, 4451 * PRLI, ADISC and FDISC. Based on the ELS command type and the 4452 * returned error status, it makes the decision whether a retry shall be 4453 * issued for the command, and whether a retry shall be made immediately or 4454 * delayed. In the former case, the corresponding ELS command issuing-function 4455 * is called to retry the command. In the later case, the ELS command shall 4456 * be posted to the ndlp delayed event and delayed function timer set to the 4457 * ndlp for the delayed command issusing. 4458 * 4459 * Return code 4460 * 0 - No retry of els command is made 4461 * 1 - Immediate or delayed retry of els command is made 4462 **/ 4463 static int 4464 lpfc_els_retry(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb, 4465 struct lpfc_iocbq *rspiocb) 4466 { 4467 struct lpfc_vport *vport = cmdiocb->vport; 4468 IOCB_t *irsp = &rspiocb->iocb; 4469 struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) cmdiocb->context1; 4470 struct lpfc_dmabuf *pcmd = (struct lpfc_dmabuf *) cmdiocb->context2; 4471 uint32_t *elscmd; 4472 struct ls_rjt stat; 4473 int retry = 0, maxretry = lpfc_max_els_tries, delay = 0; 4474 int logerr = 0; 4475 uint32_t cmd = 0; 4476 uint32_t did; 4477 int link_reset = 0, rc; 4478 4479 4480 /* Note: context2 may be 0 for internal driver abort 4481 * of delays ELS command. 4482 */ 4483 4484 if (pcmd && pcmd->virt) { 4485 elscmd = (uint32_t *) (pcmd->virt); 4486 cmd = *elscmd++; 4487 } 4488 4489 if (ndlp) 4490 did = ndlp->nlp_DID; 4491 else { 4492 /* We should only hit this case for retrying PLOGI */ 4493 did = irsp->un.elsreq64.remoteID; 4494 ndlp = lpfc_findnode_did(vport, did); 4495 if (!ndlp && (cmd != ELS_CMD_PLOGI)) 4496 return 0; 4497 } 4498 4499 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, 4500 "Retry ELS: wd7:x%x wd4:x%x did:x%x", 4501 *(((uint32_t *)irsp) + 7), irsp->un.ulpWord[4], did); 4502 4503 switch (irsp->ulpStatus) { 4504 case IOSTAT_FCP_RSP_ERROR: 4505 break; 4506 case IOSTAT_REMOTE_STOP: 4507 if (phba->sli_rev == LPFC_SLI_REV4) { 4508 /* This IO was aborted by the target, we don't 4509 * know the rxid and because we did not send the 4510 * ABTS we cannot generate and RRQ. 4511 */ 4512 lpfc_set_rrq_active(phba, ndlp, 4513 cmdiocb->sli4_lxritag, 0, 0); 4514 } 4515 break; 4516 case IOSTAT_LOCAL_REJECT: 4517 switch ((irsp->un.ulpWord[4] & IOERR_PARAM_MASK)) { 4518 case IOERR_LOOP_OPEN_FAILURE: 4519 if (cmd == ELS_CMD_FLOGI) { 4520 if (PCI_DEVICE_ID_HORNET == 4521 phba->pcidev->device) { 4522 phba->fc_topology = LPFC_TOPOLOGY_LOOP; 4523 phba->pport->fc_myDID = 0; 4524 phba->alpa_map[0] = 0; 4525 phba->alpa_map[1] = 0; 4526 } 4527 } 4528 if (cmd == ELS_CMD_PLOGI && cmdiocb->retry == 0) 4529 delay = 1000; 4530 retry = 1; 4531 break; 4532 4533 case IOERR_ILLEGAL_COMMAND: 4534 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 4535 "0124 Retry illegal cmd x%x " 4536 "retry:x%x delay:x%x\n", 4537 cmd, cmdiocb->retry, delay); 4538 retry = 1; 4539 /* All command's retry policy */ 4540 maxretry = 8; 4541 if (cmdiocb->retry > 2) 4542 delay = 1000; 4543 break; 4544 4545 case IOERR_NO_RESOURCES: 4546 logerr = 1; /* HBA out of resources */ 4547 retry = 1; 4548 if (cmdiocb->retry > 100) 4549 delay = 100; 4550 maxretry = 250; 4551 break; 4552 4553 case IOERR_ILLEGAL_FRAME: 4554 delay = 100; 4555 retry = 1; 4556 break; 4557 4558 case IOERR_INVALID_RPI: 4559 if (cmd == ELS_CMD_PLOGI && 4560 did == NameServer_DID) { 4561 /* Continue forever if plogi to */ 4562 /* the nameserver fails */ 4563 maxretry = 0; 4564 delay = 100; 4565 } 4566 retry = 1; 4567 break; 4568 4569 case IOERR_SEQUENCE_TIMEOUT: 4570 if (cmd == ELS_CMD_PLOGI && 4571 did == NameServer_DID && 4572 (cmdiocb->retry + 1) == maxretry) { 4573 /* Reset the Link */ 4574 link_reset = 1; 4575 break; 4576 } 4577 retry = 1; 4578 delay = 100; 4579 break; 4580 } 4581 break; 4582 4583 case IOSTAT_NPORT_RJT: 4584 case IOSTAT_FABRIC_RJT: 4585 if (irsp->un.ulpWord[4] & RJT_UNAVAIL_TEMP) { 4586 retry = 1; 4587 break; 4588 } 4589 break; 4590 4591 case IOSTAT_NPORT_BSY: 4592 case IOSTAT_FABRIC_BSY: 4593 logerr = 1; /* Fabric / Remote NPort out of resources */ 4594 retry = 1; 4595 break; 4596 4597 case IOSTAT_LS_RJT: 4598 stat.un.lsRjtError = be32_to_cpu(irsp->un.ulpWord[4]); 4599 /* Added for Vendor specifc support 4600 * Just keep retrying for these Rsn / Exp codes 4601 */ 4602 switch (stat.un.b.lsRjtRsnCode) { 4603 case LSRJT_UNABLE_TPC: 4604 /* The driver has a VALID PLOGI but the rport has 4605 * rejected the PRLI - can't do it now. Delay 4606 * for 1 second and try again. 4607 * 4608 * However, if explanation is REQ_UNSUPPORTED there's 4609 * no point to retry PRLI. 4610 */ 4611 if ((cmd == ELS_CMD_PRLI || cmd == ELS_CMD_NVMEPRLI) && 4612 stat.un.b.lsRjtRsnCodeExp != 4613 LSEXP_REQ_UNSUPPORTED) { 4614 delay = 1000; 4615 maxretry = lpfc_max_els_tries + 1; 4616 retry = 1; 4617 break; 4618 } 4619 4620 /* Legacy bug fix code for targets with PLOGI delays. */ 4621 if (stat.un.b.lsRjtRsnCodeExp == 4622 LSEXP_CMD_IN_PROGRESS) { 4623 if (cmd == ELS_CMD_PLOGI) { 4624 delay = 1000; 4625 maxretry = 48; 4626 } 4627 retry = 1; 4628 break; 4629 } 4630 if (stat.un.b.lsRjtRsnCodeExp == 4631 LSEXP_CANT_GIVE_DATA) { 4632 if (cmd == ELS_CMD_PLOGI) { 4633 delay = 1000; 4634 maxretry = 48; 4635 } 4636 retry = 1; 4637 break; 4638 } 4639 if (cmd == ELS_CMD_PLOGI) { 4640 delay = 1000; 4641 maxretry = lpfc_max_els_tries + 1; 4642 retry = 1; 4643 break; 4644 } 4645 if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) && 4646 (cmd == ELS_CMD_FDISC) && 4647 (stat.un.b.lsRjtRsnCodeExp == LSEXP_OUT_OF_RESOURCE)){ 4648 lpfc_printf_vlog(vport, KERN_ERR, 4649 LOG_TRACE_EVENT, 4650 "0125 FDISC Failed (x%x). " 4651 "Fabric out of resources\n", 4652 stat.un.lsRjtError); 4653 lpfc_vport_set_state(vport, 4654 FC_VPORT_NO_FABRIC_RSCS); 4655 } 4656 break; 4657 4658 case LSRJT_LOGICAL_BSY: 4659 if ((cmd == ELS_CMD_PLOGI) || 4660 (cmd == ELS_CMD_PRLI) || 4661 (cmd == ELS_CMD_NVMEPRLI)) { 4662 delay = 1000; 4663 maxretry = 48; 4664 } else if (cmd == ELS_CMD_FDISC) { 4665 /* FDISC retry policy */ 4666 maxretry = 48; 4667 if (cmdiocb->retry >= 32) 4668 delay = 1000; 4669 } 4670 retry = 1; 4671 break; 4672 4673 case LSRJT_LOGICAL_ERR: 4674 /* There are some cases where switches return this 4675 * error when they are not ready and should be returning 4676 * Logical Busy. We should delay every time. 4677 */ 4678 if (cmd == ELS_CMD_FDISC && 4679 stat.un.b.lsRjtRsnCodeExp == LSEXP_PORT_LOGIN_REQ) { 4680 maxretry = 3; 4681 delay = 1000; 4682 retry = 1; 4683 } else if (cmd == ELS_CMD_FLOGI && 4684 stat.un.b.lsRjtRsnCodeExp == 4685 LSEXP_NOTHING_MORE) { 4686 vport->fc_sparam.cmn.bbRcvSizeMsb &= 0xf; 4687 retry = 1; 4688 lpfc_printf_vlog(vport, KERN_ERR, 4689 LOG_TRACE_EVENT, 4690 "0820 FLOGI Failed (x%x). " 4691 "BBCredit Not Supported\n", 4692 stat.un.lsRjtError); 4693 } 4694 break; 4695 4696 case LSRJT_PROTOCOL_ERR: 4697 if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) && 4698 (cmd == ELS_CMD_FDISC) && 4699 ((stat.un.b.lsRjtRsnCodeExp == LSEXP_INVALID_PNAME) || 4700 (stat.un.b.lsRjtRsnCodeExp == LSEXP_INVALID_NPORT_ID)) 4701 ) { 4702 lpfc_printf_vlog(vport, KERN_ERR, 4703 LOG_TRACE_EVENT, 4704 "0122 FDISC Failed (x%x). " 4705 "Fabric Detected Bad WWN\n", 4706 stat.un.lsRjtError); 4707 lpfc_vport_set_state(vport, 4708 FC_VPORT_FABRIC_REJ_WWN); 4709 } 4710 break; 4711 case LSRJT_VENDOR_UNIQUE: 4712 if ((stat.un.b.vendorUnique == 0x45) && 4713 (cmd == ELS_CMD_FLOGI)) { 4714 goto out_retry; 4715 } 4716 break; 4717 case LSRJT_CMD_UNSUPPORTED: 4718 /* lpfc nvmet returns this type of LS_RJT when it 4719 * receives an FCP PRLI because lpfc nvmet only 4720 * support NVME. ELS request is terminated for FCP4 4721 * on this rport. 4722 */ 4723 if (stat.un.b.lsRjtRsnCodeExp == 4724 LSEXP_REQ_UNSUPPORTED && cmd == ELS_CMD_PRLI) { 4725 spin_lock_irq(&ndlp->lock); 4726 ndlp->nlp_flag |= NLP_FCP_PRLI_RJT; 4727 spin_unlock_irq(&ndlp->lock); 4728 retry = 0; 4729 goto out_retry; 4730 } 4731 break; 4732 } 4733 break; 4734 4735 case IOSTAT_INTERMED_RSP: 4736 case IOSTAT_BA_RJT: 4737 break; 4738 4739 default: 4740 break; 4741 } 4742 4743 if (link_reset) { 4744 rc = lpfc_link_reset(vport); 4745 if (rc) { 4746 /* Do not give up. Retry PLOGI one more time and attempt 4747 * link reset if PLOGI fails again. 4748 */ 4749 retry = 1; 4750 delay = 100; 4751 goto out_retry; 4752 } 4753 return 1; 4754 } 4755 4756 if (did == FDMI_DID) 4757 retry = 1; 4758 4759 if ((cmd == ELS_CMD_FLOGI) && 4760 (phba->fc_topology != LPFC_TOPOLOGY_LOOP) && 4761 !lpfc_error_lost_link(irsp)) { 4762 /* FLOGI retry policy */ 4763 retry = 1; 4764 /* retry FLOGI forever */ 4765 if (phba->link_flag != LS_LOOPBACK_MODE) 4766 maxretry = 0; 4767 else 4768 maxretry = 2; 4769 4770 if (cmdiocb->retry >= 100) 4771 delay = 5000; 4772 else if (cmdiocb->retry >= 32) 4773 delay = 1000; 4774 } else if ((cmd == ELS_CMD_FDISC) && !lpfc_error_lost_link(irsp)) { 4775 /* retry FDISCs every second up to devloss */ 4776 retry = 1; 4777 maxretry = vport->cfg_devloss_tmo; 4778 delay = 1000; 4779 } 4780 4781 cmdiocb->retry++; 4782 if (maxretry && (cmdiocb->retry >= maxretry)) { 4783 phba->fc_stat.elsRetryExceeded++; 4784 retry = 0; 4785 } 4786 4787 if ((vport->load_flag & FC_UNLOADING) != 0) 4788 retry = 0; 4789 4790 out_retry: 4791 if (retry) { 4792 if ((cmd == ELS_CMD_PLOGI) || (cmd == ELS_CMD_FDISC)) { 4793 /* Stop retrying PLOGI and FDISC if in FCF discovery */ 4794 if (phba->fcf.fcf_flag & FCF_DISCOVERY) { 4795 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, 4796 "2849 Stop retry ELS command " 4797 "x%x to remote NPORT x%x, " 4798 "Data: x%x x%x\n", cmd, did, 4799 cmdiocb->retry, delay); 4800 return 0; 4801 } 4802 } 4803 4804 /* Retry ELS command <elsCmd> to remote NPORT <did> */ 4805 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, 4806 "0107 Retry ELS command x%x to remote " 4807 "NPORT x%x Data: x%x x%x\n", 4808 cmd, did, cmdiocb->retry, delay); 4809 4810 if (((cmd == ELS_CMD_PLOGI) || (cmd == ELS_CMD_ADISC)) && 4811 ((irsp->ulpStatus != IOSTAT_LOCAL_REJECT) || 4812 ((irsp->un.ulpWord[4] & IOERR_PARAM_MASK) != 4813 IOERR_NO_RESOURCES))) { 4814 /* Don't reset timer for no resources */ 4815 4816 /* If discovery / RSCN timer is running, reset it */ 4817 if (timer_pending(&vport->fc_disctmo) || 4818 (vport->fc_flag & FC_RSCN_MODE)) 4819 lpfc_set_disctmo(vport); 4820 } 4821 4822 phba->fc_stat.elsXmitRetry++; 4823 if (ndlp && delay) { 4824 phba->fc_stat.elsDelayRetry++; 4825 ndlp->nlp_retry = cmdiocb->retry; 4826 4827 /* delay is specified in milliseconds */ 4828 mod_timer(&ndlp->nlp_delayfunc, 4829 jiffies + msecs_to_jiffies(delay)); 4830 spin_lock_irq(&ndlp->lock); 4831 ndlp->nlp_flag |= NLP_DELAY_TMO; 4832 spin_unlock_irq(&ndlp->lock); 4833 4834 ndlp->nlp_prev_state = ndlp->nlp_state; 4835 if ((cmd == ELS_CMD_PRLI) || 4836 (cmd == ELS_CMD_NVMEPRLI)) 4837 lpfc_nlp_set_state(vport, ndlp, 4838 NLP_STE_PRLI_ISSUE); 4839 else if (cmd != ELS_CMD_ADISC) 4840 lpfc_nlp_set_state(vport, ndlp, 4841 NLP_STE_NPR_NODE); 4842 ndlp->nlp_last_elscmd = cmd; 4843 4844 return 1; 4845 } 4846 switch (cmd) { 4847 case ELS_CMD_FLOGI: 4848 lpfc_issue_els_flogi(vport, ndlp, cmdiocb->retry); 4849 return 1; 4850 case ELS_CMD_FDISC: 4851 lpfc_issue_els_fdisc(vport, ndlp, cmdiocb->retry); 4852 return 1; 4853 case ELS_CMD_PLOGI: 4854 if (ndlp) { 4855 ndlp->nlp_prev_state = ndlp->nlp_state; 4856 lpfc_nlp_set_state(vport, ndlp, 4857 NLP_STE_PLOGI_ISSUE); 4858 } 4859 lpfc_issue_els_plogi(vport, did, cmdiocb->retry); 4860 return 1; 4861 case ELS_CMD_ADISC: 4862 ndlp->nlp_prev_state = ndlp->nlp_state; 4863 lpfc_nlp_set_state(vport, ndlp, NLP_STE_ADISC_ISSUE); 4864 lpfc_issue_els_adisc(vport, ndlp, cmdiocb->retry); 4865 return 1; 4866 case ELS_CMD_PRLI: 4867 case ELS_CMD_NVMEPRLI: 4868 ndlp->nlp_prev_state = ndlp->nlp_state; 4869 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PRLI_ISSUE); 4870 lpfc_issue_els_prli(vport, ndlp, cmdiocb->retry); 4871 return 1; 4872 case ELS_CMD_LOGO: 4873 ndlp->nlp_prev_state = ndlp->nlp_state; 4874 lpfc_nlp_set_state(vport, ndlp, NLP_STE_LOGO_ISSUE); 4875 lpfc_issue_els_logo(vport, ndlp, cmdiocb->retry); 4876 return 1; 4877 } 4878 } 4879 /* No retry ELS command <elsCmd> to remote NPORT <did> */ 4880 if (logerr) { 4881 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 4882 "0137 No retry ELS command x%x to remote " 4883 "NPORT x%x: Out of Resources: Error:x%x/%x\n", 4884 cmd, did, irsp->ulpStatus, 4885 irsp->un.ulpWord[4]); 4886 } 4887 else { 4888 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, 4889 "0108 No retry ELS command x%x to remote " 4890 "NPORT x%x Retried:%d Error:x%x/%x\n", 4891 cmd, did, cmdiocb->retry, irsp->ulpStatus, 4892 irsp->un.ulpWord[4]); 4893 } 4894 return 0; 4895 } 4896 4897 /** 4898 * lpfc_els_free_data - Free lpfc dma buffer and data structure with an iocb 4899 * @phba: pointer to lpfc hba data structure. 4900 * @buf_ptr1: pointer to the lpfc DMA buffer data structure. 4901 * 4902 * This routine releases the lpfc DMA (Direct Memory Access) buffer(s) 4903 * associated with a command IOCB back to the lpfc DMA buffer pool. It first 4904 * checks to see whether there is a lpfc DMA buffer associated with the 4905 * response of the command IOCB. If so, it will be released before releasing 4906 * the lpfc DMA buffer associated with the IOCB itself. 4907 * 4908 * Return code 4909 * 0 - Successfully released lpfc DMA buffer (currently, always return 0) 4910 **/ 4911 static int 4912 lpfc_els_free_data(struct lpfc_hba *phba, struct lpfc_dmabuf *buf_ptr1) 4913 { 4914 struct lpfc_dmabuf *buf_ptr; 4915 4916 /* Free the response before processing the command. */ 4917 if (!list_empty(&buf_ptr1->list)) { 4918 list_remove_head(&buf_ptr1->list, buf_ptr, 4919 struct lpfc_dmabuf, 4920 list); 4921 lpfc_mbuf_free(phba, buf_ptr->virt, buf_ptr->phys); 4922 kfree(buf_ptr); 4923 } 4924 lpfc_mbuf_free(phba, buf_ptr1->virt, buf_ptr1->phys); 4925 kfree(buf_ptr1); 4926 return 0; 4927 } 4928 4929 /** 4930 * lpfc_els_free_bpl - Free lpfc dma buffer and data structure with bpl 4931 * @phba: pointer to lpfc hba data structure. 4932 * @buf_ptr: pointer to the lpfc dma buffer data structure. 4933 * 4934 * This routine releases the lpfc Direct Memory Access (DMA) buffer 4935 * associated with a Buffer Pointer List (BPL) back to the lpfc DMA buffer 4936 * pool. 4937 * 4938 * Return code 4939 * 0 - Successfully released lpfc DMA buffer (currently, always return 0) 4940 **/ 4941 static int 4942 lpfc_els_free_bpl(struct lpfc_hba *phba, struct lpfc_dmabuf *buf_ptr) 4943 { 4944 lpfc_mbuf_free(phba, buf_ptr->virt, buf_ptr->phys); 4945 kfree(buf_ptr); 4946 return 0; 4947 } 4948 4949 /** 4950 * lpfc_els_free_iocb - Free a command iocb and its associated resources 4951 * @phba: pointer to lpfc hba data structure. 4952 * @elsiocb: pointer to lpfc els command iocb data structure. 4953 * 4954 * This routine frees a command IOCB and its associated resources. The 4955 * command IOCB data structure contains the reference to various associated 4956 * resources, these fields must be set to NULL if the associated reference 4957 * not present: 4958 * context1 - reference to ndlp 4959 * context2 - reference to cmd 4960 * context2->next - reference to rsp 4961 * context3 - reference to bpl 4962 * 4963 * It first properly decrements the reference count held on ndlp for the 4964 * IOCB completion callback function. If LPFC_DELAY_MEM_FREE flag is not 4965 * set, it invokes the lpfc_els_free_data() routine to release the Direct 4966 * Memory Access (DMA) buffers associated with the IOCB. Otherwise, it 4967 * adds the DMA buffer the @phba data structure for the delayed release. 4968 * If reference to the Buffer Pointer List (BPL) is present, the 4969 * lpfc_els_free_bpl() routine is invoked to release the DMA memory 4970 * associated with BPL. Finally, the lpfc_sli_release_iocbq() routine is 4971 * invoked to release the IOCB data structure back to @phba IOCBQ list. 4972 * 4973 * Return code 4974 * 0 - Success (currently, always return 0) 4975 **/ 4976 int 4977 lpfc_els_free_iocb(struct lpfc_hba *phba, struct lpfc_iocbq *elsiocb) 4978 { 4979 struct lpfc_dmabuf *buf_ptr, *buf_ptr1; 4980 4981 /* The I/O iocb is complete. Clear the context1 data. */ 4982 elsiocb->context1 = NULL; 4983 4984 /* context2 = cmd, context2->next = rsp, context3 = bpl */ 4985 if (elsiocb->context2) { 4986 if (elsiocb->iocb_flag & LPFC_DELAY_MEM_FREE) { 4987 /* Firmware could still be in progress of DMAing 4988 * payload, so don't free data buffer till after 4989 * a hbeat. 4990 */ 4991 elsiocb->iocb_flag &= ~LPFC_DELAY_MEM_FREE; 4992 buf_ptr = elsiocb->context2; 4993 elsiocb->context2 = NULL; 4994 if (buf_ptr) { 4995 buf_ptr1 = NULL; 4996 spin_lock_irq(&phba->hbalock); 4997 if (!list_empty(&buf_ptr->list)) { 4998 list_remove_head(&buf_ptr->list, 4999 buf_ptr1, struct lpfc_dmabuf, 5000 list); 5001 INIT_LIST_HEAD(&buf_ptr1->list); 5002 list_add_tail(&buf_ptr1->list, 5003 &phba->elsbuf); 5004 phba->elsbuf_cnt++; 5005 } 5006 INIT_LIST_HEAD(&buf_ptr->list); 5007 list_add_tail(&buf_ptr->list, &phba->elsbuf); 5008 phba->elsbuf_cnt++; 5009 spin_unlock_irq(&phba->hbalock); 5010 } 5011 } else { 5012 buf_ptr1 = (struct lpfc_dmabuf *) elsiocb->context2; 5013 lpfc_els_free_data(phba, buf_ptr1); 5014 elsiocb->context2 = NULL; 5015 } 5016 } 5017 5018 if (elsiocb->context3) { 5019 buf_ptr = (struct lpfc_dmabuf *) elsiocb->context3; 5020 lpfc_els_free_bpl(phba, buf_ptr); 5021 elsiocb->context3 = NULL; 5022 } 5023 lpfc_sli_release_iocbq(phba, elsiocb); 5024 return 0; 5025 } 5026 5027 /** 5028 * lpfc_cmpl_els_logo_acc - Completion callback function to logo acc response 5029 * @phba: pointer to lpfc hba data structure. 5030 * @cmdiocb: pointer to lpfc command iocb data structure. 5031 * @rspiocb: pointer to lpfc response iocb data structure. 5032 * 5033 * This routine is the completion callback function to the Logout (LOGO) 5034 * Accept (ACC) Response ELS command. This routine is invoked to indicate 5035 * the completion of the LOGO process. It invokes the lpfc_nlp_not_used() to 5036 * release the ndlp if it has the last reference remaining (reference count 5037 * is 1). If succeeded (meaning ndlp released), it sets the IOCB context1 5038 * field to NULL to inform the following lpfc_els_free_iocb() routine no 5039 * ndlp reference count needs to be decremented. Otherwise, the ndlp 5040 * reference use-count shall be decremented by the lpfc_els_free_iocb() 5041 * routine. Finally, the lpfc_els_free_iocb() is invoked to release the 5042 * IOCB data structure. 5043 **/ 5044 static void 5045 lpfc_cmpl_els_logo_acc(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb, 5046 struct lpfc_iocbq *rspiocb) 5047 { 5048 struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) cmdiocb->context1; 5049 struct lpfc_vport *vport = cmdiocb->vport; 5050 IOCB_t *irsp; 5051 5052 irsp = &rspiocb->iocb; 5053 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP, 5054 "ACC LOGO cmpl: status:x%x/x%x did:x%x", 5055 irsp->ulpStatus, irsp->un.ulpWord[4], ndlp->nlp_DID); 5056 /* ACC to LOGO completes to NPort <nlp_DID> */ 5057 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, 5058 "0109 ACC to LOGO completes to NPort x%x refcnt %d " 5059 "Data: x%x x%x x%x\n", 5060 ndlp->nlp_DID, kref_read(&ndlp->kref), ndlp->nlp_flag, 5061 ndlp->nlp_state, ndlp->nlp_rpi); 5062 5063 /* This clause allows the LOGO ACC to complete and free resources 5064 * for the Fabric Domain Controller. It does deliberately skip 5065 * the unreg_rpi and release rpi because some fabrics send RDP 5066 * requests after logging out from the initiator. 5067 */ 5068 if (ndlp->nlp_type & NLP_FABRIC && 5069 ((ndlp->nlp_DID & WELL_KNOWN_DID_MASK) != WELL_KNOWN_DID_MASK)) 5070 goto out; 5071 5072 if (ndlp->nlp_state == NLP_STE_NPR_NODE) { 5073 5074 /* If PLOGI is being retried, PLOGI completion will cleanup the 5075 * node. The NLP_NPR_2B_DISC flag needs to be retained to make 5076 * progress on nodes discovered from last RSCN. 5077 */ 5078 if ((ndlp->nlp_flag & NLP_DELAY_TMO) && 5079 (ndlp->nlp_last_elscmd == ELS_CMD_PLOGI)) 5080 goto out; 5081 5082 /* NPort Recovery mode or node is just allocated */ 5083 if (!lpfc_nlp_not_used(ndlp)) { 5084 /* A LOGO is completing and the node is in NPR state. 5085 * If this a fabric node that cleared its transport 5086 * registration, release the rpi. 5087 */ 5088 spin_lock_irq(&ndlp->lock); 5089 ndlp->nlp_flag &= ~NLP_NPR_2B_DISC; 5090 if (phba->sli_rev == LPFC_SLI_REV4) 5091 ndlp->nlp_flag |= NLP_RELEASE_RPI; 5092 spin_unlock_irq(&ndlp->lock); 5093 lpfc_unreg_rpi(vport, ndlp); 5094 } else { 5095 /* Indicate the node has already released, should 5096 * not reference to it from within lpfc_els_free_iocb. 5097 */ 5098 cmdiocb->context1 = NULL; 5099 } 5100 } 5101 out: 5102 /* 5103 * The driver received a LOGO from the rport and has ACK'd it. 5104 * At this point, the driver is done so release the IOCB 5105 */ 5106 lpfc_els_free_iocb(phba, cmdiocb); 5107 lpfc_nlp_put(ndlp); 5108 } 5109 5110 /** 5111 * lpfc_mbx_cmpl_dflt_rpi - Completion callbk func for unreg dflt rpi mbox cmd 5112 * @phba: pointer to lpfc hba data structure. 5113 * @pmb: pointer to the driver internal queue element for mailbox command. 5114 * 5115 * This routine is the completion callback function for unregister default 5116 * RPI (Remote Port Index) mailbox command to the @phba. It simply releases 5117 * the associated lpfc Direct Memory Access (DMA) buffer back to the pool and 5118 * decrements the ndlp reference count held for this completion callback 5119 * function. After that, it invokes the lpfc_nlp_not_used() to check 5120 * whether there is only one reference left on the ndlp. If so, it will 5121 * perform one more decrement and trigger the release of the ndlp. 5122 **/ 5123 void 5124 lpfc_mbx_cmpl_dflt_rpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 5125 { 5126 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *)(pmb->ctx_buf); 5127 struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *)pmb->ctx_ndlp; 5128 u32 mbx_flag = pmb->mbox_flag; 5129 u32 mbx_cmd = pmb->u.mb.mbxCommand; 5130 5131 pmb->ctx_buf = NULL; 5132 pmb->ctx_ndlp = NULL; 5133 5134 if (ndlp) { 5135 lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_NODE, 5136 "0006 rpi x%x DID:%x flg:%x %d x%px " 5137 "mbx_cmd x%x mbx_flag x%x x%px\n", 5138 ndlp->nlp_rpi, ndlp->nlp_DID, ndlp->nlp_flag, 5139 kref_read(&ndlp->kref), ndlp, mbx_cmd, 5140 mbx_flag, pmb); 5141 5142 /* This ends the default/temporary RPI cleanup logic for this 5143 * ndlp and the node and rpi needs to be released. Free the rpi 5144 * first on an UNREG_LOGIN and then release the final 5145 * references. 5146 */ 5147 spin_lock_irq(&ndlp->lock); 5148 ndlp->nlp_flag &= ~NLP_REG_LOGIN_SEND; 5149 if (mbx_cmd == MBX_UNREG_LOGIN) 5150 ndlp->nlp_flag &= ~NLP_UNREG_INP; 5151 spin_unlock_irq(&ndlp->lock); 5152 lpfc_nlp_put(ndlp); 5153 lpfc_drop_node(ndlp->vport, ndlp); 5154 } 5155 5156 lpfc_mbuf_free(phba, mp->virt, mp->phys); 5157 kfree(mp); 5158 mempool_free(pmb, phba->mbox_mem_pool); 5159 return; 5160 } 5161 5162 /** 5163 * lpfc_cmpl_els_rsp - Completion callback function for els response iocb cmd 5164 * @phba: pointer to lpfc hba data structure. 5165 * @cmdiocb: pointer to lpfc command iocb data structure. 5166 * @rspiocb: pointer to lpfc response iocb data structure. 5167 * 5168 * This routine is the completion callback function for ELS Response IOCB 5169 * command. In normal case, this callback function just properly sets the 5170 * nlp_flag bitmap in the ndlp data structure, if the mbox command reference 5171 * field in the command IOCB is not NULL, the referred mailbox command will 5172 * be send out, and then invokes the lpfc_els_free_iocb() routine to release 5173 * the IOCB. 5174 **/ 5175 static void 5176 lpfc_cmpl_els_rsp(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb, 5177 struct lpfc_iocbq *rspiocb) 5178 { 5179 struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) cmdiocb->context1; 5180 struct lpfc_vport *vport = ndlp ? ndlp->vport : NULL; 5181 struct Scsi_Host *shost = vport ? lpfc_shost_from_vport(vport) : NULL; 5182 IOCB_t *irsp; 5183 LPFC_MBOXQ_t *mbox = NULL; 5184 struct lpfc_dmabuf *mp = NULL; 5185 5186 irsp = &rspiocb->iocb; 5187 5188 if (!vport) { 5189 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 5190 "3177 ELS response failed\n"); 5191 goto out; 5192 } 5193 if (cmdiocb->context_un.mbox) 5194 mbox = cmdiocb->context_un.mbox; 5195 5196 /* Check to see if link went down during discovery */ 5197 if (!ndlp || lpfc_els_chk_latt(vport)) { 5198 if (mbox) { 5199 mp = (struct lpfc_dmabuf *)mbox->ctx_buf; 5200 if (mp) { 5201 lpfc_mbuf_free(phba, mp->virt, mp->phys); 5202 kfree(mp); 5203 } 5204 mempool_free(mbox, phba->mbox_mem_pool); 5205 } 5206 goto out; 5207 } 5208 5209 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP, 5210 "ELS rsp cmpl: status:x%x/x%x did:x%x", 5211 irsp->ulpStatus, irsp->un.ulpWord[4], 5212 cmdiocb->iocb.un.elsreq64.remoteID); 5213 /* ELS response tag <ulpIoTag> completes */ 5214 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, 5215 "0110 ELS response tag x%x completes " 5216 "Data: x%x x%x x%x x%x x%x x%x x%x x%x x%px\n", 5217 cmdiocb->iocb.ulpIoTag, rspiocb->iocb.ulpStatus, 5218 rspiocb->iocb.un.ulpWord[4], rspiocb->iocb.ulpTimeout, 5219 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state, 5220 ndlp->nlp_rpi, kref_read(&ndlp->kref), mbox); 5221 if (mbox) { 5222 if ((rspiocb->iocb.ulpStatus == 0) && 5223 (ndlp->nlp_flag & NLP_ACC_REGLOGIN)) { 5224 if (!lpfc_unreg_rpi(vport, ndlp) && 5225 (!(vport->fc_flag & FC_PT2PT))) { 5226 if (ndlp->nlp_state == NLP_STE_REG_LOGIN_ISSUE) { 5227 lpfc_printf_vlog(vport, KERN_INFO, 5228 LOG_DISCOVERY, 5229 "0314 PLOGI recov " 5230 "DID x%x " 5231 "Data: x%x x%x x%x\n", 5232 ndlp->nlp_DID, 5233 ndlp->nlp_state, 5234 ndlp->nlp_rpi, 5235 ndlp->nlp_flag); 5236 mp = mbox->ctx_buf; 5237 if (mp) { 5238 lpfc_mbuf_free(phba, mp->virt, 5239 mp->phys); 5240 kfree(mp); 5241 } 5242 mempool_free(mbox, phba->mbox_mem_pool); 5243 goto out; 5244 } 5245 } 5246 5247 /* Increment reference count to ndlp to hold the 5248 * reference to ndlp for the callback function. 5249 */ 5250 mbox->ctx_ndlp = lpfc_nlp_get(ndlp); 5251 if (!mbox->ctx_ndlp) 5252 goto out; 5253 5254 mbox->vport = vport; 5255 if (ndlp->nlp_flag & NLP_RM_DFLT_RPI) { 5256 mbox->mbox_flag |= LPFC_MBX_IMED_UNREG; 5257 mbox->mbox_cmpl = lpfc_mbx_cmpl_dflt_rpi; 5258 } 5259 else { 5260 mbox->mbox_cmpl = lpfc_mbx_cmpl_reg_login; 5261 ndlp->nlp_prev_state = ndlp->nlp_state; 5262 lpfc_nlp_set_state(vport, ndlp, 5263 NLP_STE_REG_LOGIN_ISSUE); 5264 } 5265 5266 ndlp->nlp_flag |= NLP_REG_LOGIN_SEND; 5267 if (lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT) 5268 != MBX_NOT_FINISHED) 5269 goto out; 5270 5271 /* Decrement the ndlp reference count we 5272 * set for this failed mailbox command. 5273 */ 5274 lpfc_nlp_put(ndlp); 5275 ndlp->nlp_flag &= ~NLP_REG_LOGIN_SEND; 5276 5277 /* ELS rsp: Cannot issue reg_login for <NPortid> */ 5278 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 5279 "0138 ELS rsp: Cannot issue reg_login for x%x " 5280 "Data: x%x x%x x%x\n", 5281 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state, 5282 ndlp->nlp_rpi); 5283 } 5284 mp = (struct lpfc_dmabuf *)mbox->ctx_buf; 5285 if (mp) { 5286 lpfc_mbuf_free(phba, mp->virt, mp->phys); 5287 kfree(mp); 5288 } 5289 mempool_free(mbox, phba->mbox_mem_pool); 5290 } 5291 out: 5292 if (ndlp && shost) { 5293 spin_lock_irq(&ndlp->lock); 5294 if (mbox) 5295 ndlp->nlp_flag &= ~NLP_ACC_REGLOGIN; 5296 ndlp->nlp_flag &= ~NLP_RM_DFLT_RPI; 5297 spin_unlock_irq(&ndlp->lock); 5298 } 5299 5300 /* An SLI4 NPIV instance wants to drop the node at this point under 5301 * these conditions and release the RPI. 5302 */ 5303 if (phba->sli_rev == LPFC_SLI_REV4 && 5304 (vport && vport->port_type == LPFC_NPIV_PORT) && 5305 !(ndlp->fc4_xpt_flags & SCSI_XPT_REGD) && 5306 ndlp->nlp_flag & NLP_RELEASE_RPI) { 5307 lpfc_sli4_free_rpi(phba, ndlp->nlp_rpi); 5308 spin_lock_irq(&ndlp->lock); 5309 ndlp->nlp_rpi = LPFC_RPI_ALLOC_ERROR; 5310 ndlp->nlp_flag &= ~NLP_RELEASE_RPI; 5311 spin_unlock_irq(&ndlp->lock); 5312 lpfc_drop_node(vport, ndlp); 5313 } 5314 5315 /* Release the originating I/O reference. */ 5316 lpfc_els_free_iocb(phba, cmdiocb); 5317 lpfc_nlp_put(ndlp); 5318 return; 5319 } 5320 5321 /** 5322 * lpfc_els_rsp_acc - Prepare and issue an acc response iocb command 5323 * @vport: pointer to a host virtual N_Port data structure. 5324 * @flag: the els command code to be accepted. 5325 * @oldiocb: pointer to the original lpfc command iocb data structure. 5326 * @ndlp: pointer to a node-list data structure. 5327 * @mbox: pointer to the driver internal queue element for mailbox command. 5328 * 5329 * This routine prepares and issues an Accept (ACC) response IOCB 5330 * command. It uses the @flag to properly set up the IOCB field for the 5331 * specific ACC response command to be issued and invokes the 5332 * lpfc_sli_issue_iocb() routine to send out ACC response IOCB. If a 5333 * @mbox pointer is passed in, it will be put into the context_un.mbox 5334 * field of the IOCB for the completion callback function to issue the 5335 * mailbox command to the HBA later when callback is invoked. 5336 * 5337 * Note that the ndlp reference count will be incremented by 1 for holding the 5338 * ndlp and the reference to ndlp will be stored into the context1 field of 5339 * the IOCB for the completion callback function to the corresponding 5340 * response ELS IOCB command. 5341 * 5342 * Return code 5343 * 0 - Successfully issued acc response 5344 * 1 - Failed to issue acc response 5345 **/ 5346 int 5347 lpfc_els_rsp_acc(struct lpfc_vport *vport, uint32_t flag, 5348 struct lpfc_iocbq *oldiocb, struct lpfc_nodelist *ndlp, 5349 LPFC_MBOXQ_t *mbox) 5350 { 5351 struct lpfc_hba *phba = vport->phba; 5352 IOCB_t *icmd; 5353 IOCB_t *oldcmd; 5354 struct lpfc_iocbq *elsiocb; 5355 uint8_t *pcmd; 5356 struct serv_parm *sp; 5357 uint16_t cmdsize; 5358 int rc; 5359 ELS_PKT *els_pkt_ptr; 5360 struct fc_els_rdf_resp *rdf_resp; 5361 5362 oldcmd = &oldiocb->iocb; 5363 5364 switch (flag) { 5365 case ELS_CMD_ACC: 5366 cmdsize = sizeof(uint32_t); 5367 elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry, 5368 ndlp, ndlp->nlp_DID, ELS_CMD_ACC); 5369 if (!elsiocb) { 5370 spin_lock_irq(&ndlp->lock); 5371 ndlp->nlp_flag &= ~NLP_LOGO_ACC; 5372 spin_unlock_irq(&ndlp->lock); 5373 return 1; 5374 } 5375 5376 icmd = &elsiocb->iocb; 5377 icmd->ulpContext = oldcmd->ulpContext; /* Xri / rx_id */ 5378 icmd->unsli3.rcvsli3.ox_id = oldcmd->unsli3.rcvsli3.ox_id; 5379 pcmd = (((struct lpfc_dmabuf *) elsiocb->context2)->virt); 5380 *((uint32_t *) (pcmd)) = ELS_CMD_ACC; 5381 pcmd += sizeof(uint32_t); 5382 5383 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP, 5384 "Issue ACC: did:x%x flg:x%x", 5385 ndlp->nlp_DID, ndlp->nlp_flag, 0); 5386 break; 5387 case ELS_CMD_FLOGI: 5388 case ELS_CMD_PLOGI: 5389 cmdsize = (sizeof(struct serv_parm) + sizeof(uint32_t)); 5390 elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry, 5391 ndlp, ndlp->nlp_DID, ELS_CMD_ACC); 5392 if (!elsiocb) 5393 return 1; 5394 5395 icmd = &elsiocb->iocb; 5396 icmd->ulpContext = oldcmd->ulpContext; /* Xri / rx_id */ 5397 icmd->unsli3.rcvsli3.ox_id = oldcmd->unsli3.rcvsli3.ox_id; 5398 pcmd = (((struct lpfc_dmabuf *) elsiocb->context2)->virt); 5399 5400 if (mbox) 5401 elsiocb->context_un.mbox = mbox; 5402 5403 *((uint32_t *) (pcmd)) = ELS_CMD_ACC; 5404 pcmd += sizeof(uint32_t); 5405 sp = (struct serv_parm *)pcmd; 5406 5407 if (flag == ELS_CMD_FLOGI) { 5408 /* Copy the received service parameters back */ 5409 memcpy(sp, &phba->fc_fabparam, 5410 sizeof(struct serv_parm)); 5411 5412 /* Clear the F_Port bit */ 5413 sp->cmn.fPort = 0; 5414 5415 /* Mark all class service parameters as invalid */ 5416 sp->cls1.classValid = 0; 5417 sp->cls2.classValid = 0; 5418 sp->cls3.classValid = 0; 5419 sp->cls4.classValid = 0; 5420 5421 /* Copy our worldwide names */ 5422 memcpy(&sp->portName, &vport->fc_sparam.portName, 5423 sizeof(struct lpfc_name)); 5424 memcpy(&sp->nodeName, &vport->fc_sparam.nodeName, 5425 sizeof(struct lpfc_name)); 5426 } else { 5427 memcpy(pcmd, &vport->fc_sparam, 5428 sizeof(struct serv_parm)); 5429 5430 sp->cmn.valid_vendor_ver_level = 0; 5431 memset(sp->un.vendorVersion, 0, 5432 sizeof(sp->un.vendorVersion)); 5433 sp->cmn.bbRcvSizeMsb &= 0xF; 5434 5435 /* If our firmware supports this feature, convey that 5436 * info to the target using the vendor specific field. 5437 */ 5438 if (phba->sli.sli_flag & LPFC_SLI_SUPPRESS_RSP) { 5439 sp->cmn.valid_vendor_ver_level = 1; 5440 sp->un.vv.vid = cpu_to_be32(LPFC_VV_EMLX_ID); 5441 sp->un.vv.flags = 5442 cpu_to_be32(LPFC_VV_SUPPRESS_RSP); 5443 } 5444 } 5445 5446 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP, 5447 "Issue ACC FLOGI/PLOGI: did:x%x flg:x%x", 5448 ndlp->nlp_DID, ndlp->nlp_flag, 0); 5449 break; 5450 case ELS_CMD_PRLO: 5451 cmdsize = sizeof(uint32_t) + sizeof(PRLO); 5452 elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry, 5453 ndlp, ndlp->nlp_DID, ELS_CMD_PRLO); 5454 if (!elsiocb) 5455 return 1; 5456 5457 icmd = &elsiocb->iocb; 5458 icmd->ulpContext = oldcmd->ulpContext; /* Xri / rx_id */ 5459 icmd->unsli3.rcvsli3.ox_id = oldcmd->unsli3.rcvsli3.ox_id; 5460 pcmd = (((struct lpfc_dmabuf *) elsiocb->context2)->virt); 5461 5462 memcpy(pcmd, ((struct lpfc_dmabuf *) oldiocb->context2)->virt, 5463 sizeof(uint32_t) + sizeof(PRLO)); 5464 *((uint32_t *) (pcmd)) = ELS_CMD_PRLO_ACC; 5465 els_pkt_ptr = (ELS_PKT *) pcmd; 5466 els_pkt_ptr->un.prlo.acceptRspCode = PRLO_REQ_EXECUTED; 5467 5468 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP, 5469 "Issue ACC PRLO: did:x%x flg:x%x", 5470 ndlp->nlp_DID, ndlp->nlp_flag, 0); 5471 break; 5472 case ELS_CMD_RDF: 5473 cmdsize = sizeof(*rdf_resp); 5474 elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry, 5475 ndlp, ndlp->nlp_DID, ELS_CMD_ACC); 5476 if (!elsiocb) 5477 return 1; 5478 5479 icmd = &elsiocb->iocb; 5480 icmd->ulpContext = oldcmd->ulpContext; /* Xri / rx_id */ 5481 icmd->unsli3.rcvsli3.ox_id = oldcmd->unsli3.rcvsli3.ox_id; 5482 pcmd = (((struct lpfc_dmabuf *)elsiocb->context2)->virt); 5483 rdf_resp = (struct fc_els_rdf_resp *)pcmd; 5484 memset(rdf_resp, 0, sizeof(*rdf_resp)); 5485 rdf_resp->acc_hdr.la_cmd = ELS_LS_ACC; 5486 5487 /* FC-LS-5 specifies desc_list_len shall be set to 12 */ 5488 rdf_resp->desc_list_len = cpu_to_be32(12); 5489 5490 /* FC-LS-5 specifies LS REQ Information descriptor */ 5491 rdf_resp->lsri.desc_tag = cpu_to_be32(1); 5492 rdf_resp->lsri.desc_len = cpu_to_be32(sizeof(u32)); 5493 rdf_resp->lsri.rqst_w0.cmd = ELS_RDF; 5494 break; 5495 default: 5496 return 1; 5497 } 5498 if (ndlp->nlp_flag & NLP_LOGO_ACC) { 5499 spin_lock_irq(&ndlp->lock); 5500 if (!(ndlp->nlp_flag & NLP_RPI_REGISTERED || 5501 ndlp->nlp_flag & NLP_REG_LOGIN_SEND)) 5502 ndlp->nlp_flag &= ~NLP_LOGO_ACC; 5503 spin_unlock_irq(&ndlp->lock); 5504 elsiocb->iocb_cmpl = lpfc_cmpl_els_logo_acc; 5505 } else { 5506 elsiocb->iocb_cmpl = lpfc_cmpl_els_rsp; 5507 } 5508 5509 phba->fc_stat.elsXmitACC++; 5510 elsiocb->context1 = lpfc_nlp_get(ndlp); 5511 if (!elsiocb->context1) { 5512 lpfc_els_free_iocb(phba, elsiocb); 5513 return 1; 5514 } 5515 5516 rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0); 5517 if (rc == IOCB_ERROR) { 5518 lpfc_els_free_iocb(phba, elsiocb); 5519 lpfc_nlp_put(ndlp); 5520 return 1; 5521 } 5522 5523 /* Xmit ELS ACC response tag <ulpIoTag> */ 5524 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, 5525 "0128 Xmit ELS ACC response Status: x%x, IoTag: x%x, " 5526 "XRI: x%x, DID: x%x, nlp_flag: x%x nlp_state: x%x " 5527 "RPI: x%x, fc_flag x%x refcnt %d\n", 5528 rc, elsiocb->iotag, elsiocb->sli4_xritag, 5529 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state, 5530 ndlp->nlp_rpi, vport->fc_flag, kref_read(&ndlp->kref)); 5531 return 0; 5532 } 5533 5534 /** 5535 * lpfc_els_rsp_reject - Prepare and issue a rjt response iocb command 5536 * @vport: pointer to a virtual N_Port data structure. 5537 * @rejectError: reject response to issue 5538 * @oldiocb: pointer to the original lpfc command iocb data structure. 5539 * @ndlp: pointer to a node-list data structure. 5540 * @mbox: pointer to the driver internal queue element for mailbox command. 5541 * 5542 * This routine prepares and issue an Reject (RJT) response IOCB 5543 * command. If a @mbox pointer is passed in, it will be put into the 5544 * context_un.mbox field of the IOCB for the completion callback function 5545 * to issue to the HBA later. 5546 * 5547 * Note that the ndlp reference count will be incremented by 1 for holding the 5548 * ndlp and the reference to ndlp will be stored into the context1 field of 5549 * the IOCB for the completion callback function to the reject response 5550 * ELS IOCB command. 5551 * 5552 * Return code 5553 * 0 - Successfully issued reject response 5554 * 1 - Failed to issue reject response 5555 **/ 5556 int 5557 lpfc_els_rsp_reject(struct lpfc_vport *vport, uint32_t rejectError, 5558 struct lpfc_iocbq *oldiocb, struct lpfc_nodelist *ndlp, 5559 LPFC_MBOXQ_t *mbox) 5560 { 5561 int rc; 5562 struct lpfc_hba *phba = vport->phba; 5563 IOCB_t *icmd; 5564 IOCB_t *oldcmd; 5565 struct lpfc_iocbq *elsiocb; 5566 uint8_t *pcmd; 5567 uint16_t cmdsize; 5568 5569 cmdsize = 2 * sizeof(uint32_t); 5570 elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry, ndlp, 5571 ndlp->nlp_DID, ELS_CMD_LS_RJT); 5572 if (!elsiocb) 5573 return 1; 5574 5575 icmd = &elsiocb->iocb; 5576 oldcmd = &oldiocb->iocb; 5577 icmd->ulpContext = oldcmd->ulpContext; /* Xri / rx_id */ 5578 icmd->unsli3.rcvsli3.ox_id = oldcmd->unsli3.rcvsli3.ox_id; 5579 pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt); 5580 5581 *((uint32_t *) (pcmd)) = ELS_CMD_LS_RJT; 5582 pcmd += sizeof(uint32_t); 5583 *((uint32_t *) (pcmd)) = rejectError; 5584 5585 if (mbox) 5586 elsiocb->context_un.mbox = mbox; 5587 5588 /* Xmit ELS RJT <err> response tag <ulpIoTag> */ 5589 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, 5590 "0129 Xmit ELS RJT x%x response tag x%x " 5591 "xri x%x, did x%x, nlp_flag x%x, nlp_state x%x, " 5592 "rpi x%x\n", 5593 rejectError, elsiocb->iotag, 5594 elsiocb->iocb.ulpContext, ndlp->nlp_DID, 5595 ndlp->nlp_flag, ndlp->nlp_state, ndlp->nlp_rpi); 5596 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP, 5597 "Issue LS_RJT: did:x%x flg:x%x err:x%x", 5598 ndlp->nlp_DID, ndlp->nlp_flag, rejectError); 5599 5600 phba->fc_stat.elsXmitLSRJT++; 5601 elsiocb->iocb_cmpl = lpfc_cmpl_els_rsp; 5602 elsiocb->context1 = lpfc_nlp_get(ndlp); 5603 if (!elsiocb->context1) { 5604 lpfc_els_free_iocb(phba, elsiocb); 5605 return 1; 5606 } 5607 5608 /* The NPIV instance is rejecting this unsolicited ELS. Make sure the 5609 * node's assigned RPI gets released provided this node is not already 5610 * registered with the transport. 5611 */ 5612 if (phba->sli_rev == LPFC_SLI_REV4 && 5613 vport->port_type == LPFC_NPIV_PORT && 5614 !(ndlp->fc4_xpt_flags & SCSI_XPT_REGD)) { 5615 spin_lock_irq(&ndlp->lock); 5616 ndlp->nlp_flag |= NLP_RELEASE_RPI; 5617 spin_unlock_irq(&ndlp->lock); 5618 } 5619 5620 rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0); 5621 if (rc == IOCB_ERROR) { 5622 lpfc_els_free_iocb(phba, elsiocb); 5623 lpfc_nlp_put(ndlp); 5624 return 1; 5625 } 5626 5627 return 0; 5628 } 5629 5630 /** 5631 * lpfc_issue_els_edc_rsp - Exchange Diagnostic Capabilities with the fabric. 5632 * @vport: pointer to a host virtual N_Port data structure. 5633 * @cmdiocb: pointer to the original lpfc command iocb data structure. 5634 * @ndlp: NPort to where rsp is directed 5635 * 5636 * This routine issues an EDC ACC RSP to the F-Port Controller to communicate 5637 * this N_Port's support of hardware signals in its Congestion 5638 * Capabilities Descriptor. 5639 * 5640 * Return code 5641 * 0 - Successfully issued edc rsp command 5642 * 1 - Failed to issue edc rsp command 5643 **/ 5644 static int 5645 lpfc_issue_els_edc_rsp(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb, 5646 struct lpfc_nodelist *ndlp) 5647 { 5648 struct lpfc_hba *phba = vport->phba; 5649 struct lpfc_els_edc_rsp *edc_rsp; 5650 struct lpfc_iocbq *elsiocb; 5651 IOCB_t *icmd, *cmd; 5652 uint8_t *pcmd; 5653 int cmdsize, rc; 5654 5655 cmdsize = sizeof(struct lpfc_els_edc_rsp); 5656 elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, cmdiocb->retry, 5657 ndlp, ndlp->nlp_DID, ELS_CMD_ACC); 5658 if (!elsiocb) 5659 return 1; 5660 5661 icmd = &elsiocb->iocb; 5662 cmd = &cmdiocb->iocb; 5663 icmd->ulpContext = cmd->ulpContext; /* Xri / rx_id */ 5664 icmd->unsli3.rcvsli3.ox_id = cmd->unsli3.rcvsli3.ox_id; 5665 pcmd = (((struct lpfc_dmabuf *)elsiocb->context2)->virt); 5666 memset(pcmd, 0, cmdsize); 5667 5668 edc_rsp = (struct lpfc_els_edc_rsp *)pcmd; 5669 edc_rsp->edc_rsp.acc_hdr.la_cmd = ELS_LS_ACC; 5670 edc_rsp->edc_rsp.desc_list_len = cpu_to_be32( 5671 FC_TLV_DESC_LENGTH_FROM_SZ(struct lpfc_els_edc_rsp)); 5672 edc_rsp->edc_rsp.lsri.desc_tag = cpu_to_be32(ELS_DTAG_LS_REQ_INFO); 5673 edc_rsp->edc_rsp.lsri.desc_len = cpu_to_be32( 5674 FC_TLV_DESC_LENGTH_FROM_SZ(struct fc_els_lsri_desc)); 5675 edc_rsp->edc_rsp.lsri.rqst_w0.cmd = ELS_EDC; 5676 lpfc_format_edc_cgn_desc(phba, &edc_rsp->cgn_desc); 5677 5678 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP, 5679 "Issue EDC ACC: did:x%x flg:x%x refcnt %d", 5680 ndlp->nlp_DID, ndlp->nlp_flag, 5681 kref_read(&ndlp->kref)); 5682 elsiocb->iocb_cmpl = lpfc_cmpl_els_rsp; 5683 5684 phba->fc_stat.elsXmitACC++; 5685 elsiocb->context1 = lpfc_nlp_get(ndlp); 5686 if (!elsiocb->context1) { 5687 lpfc_els_free_iocb(phba, elsiocb); 5688 return 1; 5689 } 5690 5691 rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0); 5692 if (rc == IOCB_ERROR) { 5693 lpfc_els_free_iocb(phba, elsiocb); 5694 lpfc_nlp_put(ndlp); 5695 return 1; 5696 } 5697 5698 /* Xmit ELS ACC response tag <ulpIoTag> */ 5699 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, 5700 "0152 Xmit EDC ACC response Status: x%x, IoTag: x%x, " 5701 "XRI: x%x, DID: x%x, nlp_flag: x%x nlp_state: x%x " 5702 "RPI: x%x, fc_flag x%x\n", 5703 rc, elsiocb->iotag, elsiocb->sli4_xritag, 5704 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state, 5705 ndlp->nlp_rpi, vport->fc_flag); 5706 5707 return 0; 5708 } 5709 5710 /** 5711 * lpfc_els_rsp_adisc_acc - Prepare and issue acc response to adisc iocb cmd 5712 * @vport: pointer to a virtual N_Port data structure. 5713 * @oldiocb: pointer to the original lpfc command iocb data structure. 5714 * @ndlp: pointer to a node-list data structure. 5715 * 5716 * This routine prepares and issues an Accept (ACC) response to Address 5717 * Discover (ADISC) ELS command. It simply prepares the payload of the IOCB 5718 * and invokes the lpfc_sli_issue_iocb() routine to send out the command. 5719 * 5720 * Note that the ndlp reference count will be incremented by 1 for holding the 5721 * ndlp and the reference to ndlp will be stored into the context1 field of 5722 * the IOCB for the completion callback function to the ADISC Accept response 5723 * ELS IOCB command. 5724 * 5725 * Return code 5726 * 0 - Successfully issued acc adisc response 5727 * 1 - Failed to issue adisc acc response 5728 **/ 5729 int 5730 lpfc_els_rsp_adisc_acc(struct lpfc_vport *vport, struct lpfc_iocbq *oldiocb, 5731 struct lpfc_nodelist *ndlp) 5732 { 5733 struct lpfc_hba *phba = vport->phba; 5734 ADISC *ap; 5735 IOCB_t *icmd, *oldcmd; 5736 struct lpfc_iocbq *elsiocb; 5737 uint8_t *pcmd; 5738 uint16_t cmdsize; 5739 int rc; 5740 5741 cmdsize = sizeof(uint32_t) + sizeof(ADISC); 5742 elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry, ndlp, 5743 ndlp->nlp_DID, ELS_CMD_ACC); 5744 if (!elsiocb) 5745 return 1; 5746 5747 icmd = &elsiocb->iocb; 5748 oldcmd = &oldiocb->iocb; 5749 icmd->ulpContext = oldcmd->ulpContext; /* Xri / rx_id */ 5750 icmd->unsli3.rcvsli3.ox_id = oldcmd->unsli3.rcvsli3.ox_id; 5751 5752 /* Xmit ADISC ACC response tag <ulpIoTag> */ 5753 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, 5754 "0130 Xmit ADISC ACC response iotag x%x xri: " 5755 "x%x, did x%x, nlp_flag x%x, nlp_state x%x rpi x%x\n", 5756 elsiocb->iotag, elsiocb->iocb.ulpContext, 5757 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state, 5758 ndlp->nlp_rpi); 5759 pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt); 5760 5761 *((uint32_t *) (pcmd)) = ELS_CMD_ACC; 5762 pcmd += sizeof(uint32_t); 5763 5764 ap = (ADISC *) (pcmd); 5765 ap->hardAL_PA = phba->fc_pref_ALPA; 5766 memcpy(&ap->portName, &vport->fc_portname, sizeof(struct lpfc_name)); 5767 memcpy(&ap->nodeName, &vport->fc_nodename, sizeof(struct lpfc_name)); 5768 ap->DID = be32_to_cpu(vport->fc_myDID); 5769 5770 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP, 5771 "Issue ACC ADISC: did:x%x flg:x%x refcnt %d", 5772 ndlp->nlp_DID, ndlp->nlp_flag, kref_read(&ndlp->kref)); 5773 5774 phba->fc_stat.elsXmitACC++; 5775 elsiocb->iocb_cmpl = lpfc_cmpl_els_rsp; 5776 elsiocb->context1 = lpfc_nlp_get(ndlp); 5777 if (!elsiocb->context1) { 5778 lpfc_els_free_iocb(phba, elsiocb); 5779 return 1; 5780 } 5781 5782 rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0); 5783 if (rc == IOCB_ERROR) { 5784 lpfc_els_free_iocb(phba, elsiocb); 5785 lpfc_nlp_put(ndlp); 5786 return 1; 5787 } 5788 5789 /* Xmit ELS ACC response tag <ulpIoTag> */ 5790 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, 5791 "0128 Xmit ELS ACC response Status: x%x, IoTag: x%x, " 5792 "XRI: x%x, DID: x%x, nlp_flag: x%x nlp_state: x%x " 5793 "RPI: x%x, fc_flag x%x\n", 5794 rc, elsiocb->iotag, elsiocb->sli4_xritag, 5795 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state, 5796 ndlp->nlp_rpi, vport->fc_flag); 5797 return 0; 5798 } 5799 5800 /** 5801 * lpfc_els_rsp_prli_acc - Prepare and issue acc response to prli iocb cmd 5802 * @vport: pointer to a virtual N_Port data structure. 5803 * @oldiocb: pointer to the original lpfc command iocb data structure. 5804 * @ndlp: pointer to a node-list data structure. 5805 * 5806 * This routine prepares and issues an Accept (ACC) response to Process 5807 * Login (PRLI) ELS command. It simply prepares the payload of the IOCB 5808 * and invokes the lpfc_sli_issue_iocb() routine to send out the command. 5809 * 5810 * Note that the ndlp reference count will be incremented by 1 for holding the 5811 * ndlp and the reference to ndlp will be stored into the context1 field of 5812 * the IOCB for the completion callback function to the PRLI Accept response 5813 * ELS IOCB command. 5814 * 5815 * Return code 5816 * 0 - Successfully issued acc prli response 5817 * 1 - Failed to issue acc prli response 5818 **/ 5819 int 5820 lpfc_els_rsp_prli_acc(struct lpfc_vport *vport, struct lpfc_iocbq *oldiocb, 5821 struct lpfc_nodelist *ndlp) 5822 { 5823 struct lpfc_hba *phba = vport->phba; 5824 PRLI *npr; 5825 struct lpfc_nvme_prli *npr_nvme; 5826 lpfc_vpd_t *vpd; 5827 IOCB_t *icmd; 5828 IOCB_t *oldcmd; 5829 struct lpfc_iocbq *elsiocb; 5830 uint8_t *pcmd; 5831 uint16_t cmdsize; 5832 uint32_t prli_fc4_req, *req_payload; 5833 struct lpfc_dmabuf *req_buf; 5834 int rc; 5835 u32 elsrspcmd; 5836 5837 /* Need the incoming PRLI payload to determine if the ACC is for an 5838 * FC4 or NVME PRLI type. The PRLI type is at word 1. 5839 */ 5840 req_buf = (struct lpfc_dmabuf *)oldiocb->context2; 5841 req_payload = (((uint32_t *)req_buf->virt) + 1); 5842 5843 /* PRLI type payload is at byte 3 for FCP or NVME. */ 5844 prli_fc4_req = be32_to_cpu(*req_payload); 5845 prli_fc4_req = (prli_fc4_req >> 24) & 0xff; 5846 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, 5847 "6127 PRLI_ACC: Req Type x%x, Word1 x%08x\n", 5848 prli_fc4_req, *((uint32_t *)req_payload)); 5849 5850 if (prli_fc4_req == PRLI_FCP_TYPE) { 5851 cmdsize = sizeof(uint32_t) + sizeof(PRLI); 5852 elsrspcmd = (ELS_CMD_ACC | (ELS_CMD_PRLI & ~ELS_RSP_MASK)); 5853 } else if (prli_fc4_req & PRLI_NVME_TYPE) { 5854 cmdsize = sizeof(uint32_t) + sizeof(struct lpfc_nvme_prli); 5855 elsrspcmd = (ELS_CMD_ACC | (ELS_CMD_NVMEPRLI & ~ELS_RSP_MASK)); 5856 } else { 5857 return 1; 5858 } 5859 5860 elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry, ndlp, 5861 ndlp->nlp_DID, elsrspcmd); 5862 if (!elsiocb) 5863 return 1; 5864 5865 icmd = &elsiocb->iocb; 5866 oldcmd = &oldiocb->iocb; 5867 icmd->ulpContext = oldcmd->ulpContext; /* Xri / rx_id */ 5868 icmd->unsli3.rcvsli3.ox_id = oldcmd->unsli3.rcvsli3.ox_id; 5869 5870 /* Xmit PRLI ACC response tag <ulpIoTag> */ 5871 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, 5872 "0131 Xmit PRLI ACC response tag x%x xri x%x, " 5873 "did x%x, nlp_flag x%x, nlp_state x%x, rpi x%x\n", 5874 elsiocb->iotag, elsiocb->iocb.ulpContext, 5875 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state, 5876 ndlp->nlp_rpi); 5877 pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt); 5878 memset(pcmd, 0, cmdsize); 5879 5880 *((uint32_t *)(pcmd)) = elsrspcmd; 5881 pcmd += sizeof(uint32_t); 5882 5883 /* For PRLI, remainder of payload is PRLI parameter page */ 5884 vpd = &phba->vpd; 5885 5886 if (prli_fc4_req == PRLI_FCP_TYPE) { 5887 /* 5888 * If the remote port is a target and our firmware version 5889 * is 3.20 or later, set the following bits for FC-TAPE 5890 * support. 5891 */ 5892 npr = (PRLI *) pcmd; 5893 if ((ndlp->nlp_type & NLP_FCP_TARGET) && 5894 (vpd->rev.feaLevelHigh >= 0x02)) { 5895 npr->ConfmComplAllowed = 1; 5896 npr->Retry = 1; 5897 npr->TaskRetryIdReq = 1; 5898 } 5899 npr->acceptRspCode = PRLI_REQ_EXECUTED; 5900 npr->estabImagePair = 1; 5901 npr->readXferRdyDis = 1; 5902 npr->ConfmComplAllowed = 1; 5903 npr->prliType = PRLI_FCP_TYPE; 5904 npr->initiatorFunc = 1; 5905 } else if (prli_fc4_req & PRLI_NVME_TYPE) { 5906 /* Respond with an NVME PRLI Type */ 5907 npr_nvme = (struct lpfc_nvme_prli *) pcmd; 5908 bf_set(prli_type_code, npr_nvme, PRLI_NVME_TYPE); 5909 bf_set(prli_estabImagePair, npr_nvme, 0); /* Should be 0 */ 5910 bf_set(prli_acc_rsp_code, npr_nvme, PRLI_REQ_EXECUTED); 5911 if (phba->nvmet_support) { 5912 bf_set(prli_tgt, npr_nvme, 1); 5913 bf_set(prli_disc, npr_nvme, 1); 5914 if (phba->cfg_nvme_enable_fb) { 5915 bf_set(prli_fba, npr_nvme, 1); 5916 5917 /* TBD. Target mode needs to post buffers 5918 * that support the configured first burst 5919 * byte size. 5920 */ 5921 bf_set(prli_fb_sz, npr_nvme, 5922 phba->cfg_nvmet_fb_size); 5923 } 5924 } else { 5925 bf_set(prli_init, npr_nvme, 1); 5926 } 5927 5928 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_DISC, 5929 "6015 NVME issue PRLI ACC word1 x%08x " 5930 "word4 x%08x word5 x%08x flag x%x, " 5931 "fcp_info x%x nlp_type x%x\n", 5932 npr_nvme->word1, npr_nvme->word4, 5933 npr_nvme->word5, ndlp->nlp_flag, 5934 ndlp->nlp_fcp_info, ndlp->nlp_type); 5935 npr_nvme->word1 = cpu_to_be32(npr_nvme->word1); 5936 npr_nvme->word4 = cpu_to_be32(npr_nvme->word4); 5937 npr_nvme->word5 = cpu_to_be32(npr_nvme->word5); 5938 } else 5939 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, 5940 "6128 Unknown FC_TYPE x%x x%x ndlp x%06x\n", 5941 prli_fc4_req, ndlp->nlp_fc4_type, 5942 ndlp->nlp_DID); 5943 5944 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP, 5945 "Issue ACC PRLI: did:x%x flg:x%x", 5946 ndlp->nlp_DID, ndlp->nlp_flag, kref_read(&ndlp->kref)); 5947 5948 phba->fc_stat.elsXmitACC++; 5949 elsiocb->iocb_cmpl = lpfc_cmpl_els_rsp; 5950 elsiocb->context1 = lpfc_nlp_get(ndlp); 5951 if (!elsiocb->context1) { 5952 lpfc_els_free_iocb(phba, elsiocb); 5953 return 1; 5954 } 5955 5956 rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0); 5957 if (rc == IOCB_ERROR) { 5958 lpfc_els_free_iocb(phba, elsiocb); 5959 lpfc_nlp_put(ndlp); 5960 return 1; 5961 } 5962 5963 return 0; 5964 } 5965 5966 /** 5967 * lpfc_els_rsp_rnid_acc - Issue rnid acc response iocb command 5968 * @vport: pointer to a virtual N_Port data structure. 5969 * @format: rnid command format. 5970 * @oldiocb: pointer to the original lpfc command iocb data structure. 5971 * @ndlp: pointer to a node-list data structure. 5972 * 5973 * This routine issues a Request Node Identification Data (RNID) Accept 5974 * (ACC) response. It constructs the RNID ACC response command according to 5975 * the proper @format and then calls the lpfc_sli_issue_iocb() routine to 5976 * issue the response. 5977 * 5978 * Note that the ndlp reference count will be incremented by 1 for holding the 5979 * ndlp and the reference to ndlp will be stored into the context1 field of 5980 * the IOCB for the completion callback function. 5981 * 5982 * Return code 5983 * 0 - Successfully issued acc rnid response 5984 * 1 - Failed to issue acc rnid response 5985 **/ 5986 static int 5987 lpfc_els_rsp_rnid_acc(struct lpfc_vport *vport, uint8_t format, 5988 struct lpfc_iocbq *oldiocb, struct lpfc_nodelist *ndlp) 5989 { 5990 struct lpfc_hba *phba = vport->phba; 5991 RNID *rn; 5992 IOCB_t *icmd, *oldcmd; 5993 struct lpfc_iocbq *elsiocb; 5994 uint8_t *pcmd; 5995 uint16_t cmdsize; 5996 int rc; 5997 5998 cmdsize = sizeof(uint32_t) + sizeof(uint32_t) 5999 + (2 * sizeof(struct lpfc_name)); 6000 if (format) 6001 cmdsize += sizeof(RNID_TOP_DISC); 6002 6003 elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry, ndlp, 6004 ndlp->nlp_DID, ELS_CMD_ACC); 6005 if (!elsiocb) 6006 return 1; 6007 6008 icmd = &elsiocb->iocb; 6009 oldcmd = &oldiocb->iocb; 6010 icmd->ulpContext = oldcmd->ulpContext; /* Xri / rx_id */ 6011 icmd->unsli3.rcvsli3.ox_id = oldcmd->unsli3.rcvsli3.ox_id; 6012 6013 /* Xmit RNID ACC response tag <ulpIoTag> */ 6014 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, 6015 "0132 Xmit RNID ACC response tag x%x xri x%x\n", 6016 elsiocb->iotag, elsiocb->iocb.ulpContext); 6017 pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt); 6018 *((uint32_t *) (pcmd)) = ELS_CMD_ACC; 6019 pcmd += sizeof(uint32_t); 6020 6021 memset(pcmd, 0, sizeof(RNID)); 6022 rn = (RNID *) (pcmd); 6023 rn->Format = format; 6024 rn->CommonLen = (2 * sizeof(struct lpfc_name)); 6025 memcpy(&rn->portName, &vport->fc_portname, sizeof(struct lpfc_name)); 6026 memcpy(&rn->nodeName, &vport->fc_nodename, sizeof(struct lpfc_name)); 6027 switch (format) { 6028 case 0: 6029 rn->SpecificLen = 0; 6030 break; 6031 case RNID_TOPOLOGY_DISC: 6032 rn->SpecificLen = sizeof(RNID_TOP_DISC); 6033 memcpy(&rn->un.topologyDisc.portName, 6034 &vport->fc_portname, sizeof(struct lpfc_name)); 6035 rn->un.topologyDisc.unitType = RNID_HBA; 6036 rn->un.topologyDisc.physPort = 0; 6037 rn->un.topologyDisc.attachedNodes = 0; 6038 break; 6039 default: 6040 rn->CommonLen = 0; 6041 rn->SpecificLen = 0; 6042 break; 6043 } 6044 6045 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP, 6046 "Issue ACC RNID: did:x%x flg:x%x refcnt %d", 6047 ndlp->nlp_DID, ndlp->nlp_flag, kref_read(&ndlp->kref)); 6048 6049 phba->fc_stat.elsXmitACC++; 6050 elsiocb->iocb_cmpl = lpfc_cmpl_els_rsp; 6051 elsiocb->context1 = lpfc_nlp_get(ndlp); 6052 if (!elsiocb->context1) { 6053 lpfc_els_free_iocb(phba, elsiocb); 6054 return 1; 6055 } 6056 6057 rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0); 6058 if (rc == IOCB_ERROR) { 6059 lpfc_els_free_iocb(phba, elsiocb); 6060 lpfc_nlp_put(ndlp); 6061 return 1; 6062 } 6063 6064 return 0; 6065 } 6066 6067 /** 6068 * lpfc_els_clear_rrq - Clear the rq that this rrq describes. 6069 * @vport: pointer to a virtual N_Port data structure. 6070 * @iocb: pointer to the lpfc command iocb data structure. 6071 * @ndlp: pointer to a node-list data structure. 6072 * 6073 * Return 6074 **/ 6075 static void 6076 lpfc_els_clear_rrq(struct lpfc_vport *vport, 6077 struct lpfc_iocbq *iocb, struct lpfc_nodelist *ndlp) 6078 { 6079 struct lpfc_hba *phba = vport->phba; 6080 uint8_t *pcmd; 6081 struct RRQ *rrq; 6082 uint16_t rxid; 6083 uint16_t xri; 6084 struct lpfc_node_rrq *prrq; 6085 6086 6087 pcmd = (uint8_t *) (((struct lpfc_dmabuf *) iocb->context2)->virt); 6088 pcmd += sizeof(uint32_t); 6089 rrq = (struct RRQ *)pcmd; 6090 rrq->rrq_exchg = be32_to_cpu(rrq->rrq_exchg); 6091 rxid = bf_get(rrq_rxid, rrq); 6092 6093 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, 6094 "2883 Clear RRQ for SID:x%x OXID:x%x RXID:x%x" 6095 " x%x x%x\n", 6096 be32_to_cpu(bf_get(rrq_did, rrq)), 6097 bf_get(rrq_oxid, rrq), 6098 rxid, 6099 iocb->iotag, iocb->iocb.ulpContext); 6100 6101 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP, 6102 "Clear RRQ: did:x%x flg:x%x exchg:x%.08x", 6103 ndlp->nlp_DID, ndlp->nlp_flag, rrq->rrq_exchg); 6104 if (vport->fc_myDID == be32_to_cpu(bf_get(rrq_did, rrq))) 6105 xri = bf_get(rrq_oxid, rrq); 6106 else 6107 xri = rxid; 6108 prrq = lpfc_get_active_rrq(vport, xri, ndlp->nlp_DID); 6109 if (prrq) 6110 lpfc_clr_rrq_active(phba, xri, prrq); 6111 return; 6112 } 6113 6114 /** 6115 * lpfc_els_rsp_echo_acc - Issue echo acc response 6116 * @vport: pointer to a virtual N_Port data structure. 6117 * @data: pointer to echo data to return in the accept. 6118 * @oldiocb: pointer to the original lpfc command iocb data structure. 6119 * @ndlp: pointer to a node-list data structure. 6120 * 6121 * Return code 6122 * 0 - Successfully issued acc echo response 6123 * 1 - Failed to issue acc echo response 6124 **/ 6125 static int 6126 lpfc_els_rsp_echo_acc(struct lpfc_vport *vport, uint8_t *data, 6127 struct lpfc_iocbq *oldiocb, struct lpfc_nodelist *ndlp) 6128 { 6129 struct lpfc_hba *phba = vport->phba; 6130 struct lpfc_iocbq *elsiocb; 6131 uint8_t *pcmd; 6132 uint16_t cmdsize; 6133 int rc; 6134 6135 cmdsize = oldiocb->iocb.unsli3.rcvsli3.acc_len; 6136 6137 /* The accumulated length can exceed the BPL_SIZE. For 6138 * now, use this as the limit 6139 */ 6140 if (cmdsize > LPFC_BPL_SIZE) 6141 cmdsize = LPFC_BPL_SIZE; 6142 elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry, ndlp, 6143 ndlp->nlp_DID, ELS_CMD_ACC); 6144 if (!elsiocb) 6145 return 1; 6146 6147 elsiocb->iocb.ulpContext = oldiocb->iocb.ulpContext; /* Xri / rx_id */ 6148 elsiocb->iocb.unsli3.rcvsli3.ox_id = oldiocb->iocb.unsli3.rcvsli3.ox_id; 6149 6150 /* Xmit ECHO ACC response tag <ulpIoTag> */ 6151 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, 6152 "2876 Xmit ECHO ACC response tag x%x xri x%x\n", 6153 elsiocb->iotag, elsiocb->iocb.ulpContext); 6154 pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt); 6155 *((uint32_t *) (pcmd)) = ELS_CMD_ACC; 6156 pcmd += sizeof(uint32_t); 6157 memcpy(pcmd, data, cmdsize - sizeof(uint32_t)); 6158 6159 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP, 6160 "Issue ACC ECHO: did:x%x flg:x%x refcnt %d", 6161 ndlp->nlp_DID, ndlp->nlp_flag, kref_read(&ndlp->kref)); 6162 6163 phba->fc_stat.elsXmitACC++; 6164 elsiocb->iocb_cmpl = lpfc_cmpl_els_rsp; 6165 elsiocb->context1 = lpfc_nlp_get(ndlp); 6166 if (!elsiocb->context1) { 6167 lpfc_els_free_iocb(phba, elsiocb); 6168 return 1; 6169 } 6170 6171 rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0); 6172 if (rc == IOCB_ERROR) { 6173 lpfc_els_free_iocb(phba, elsiocb); 6174 lpfc_nlp_put(ndlp); 6175 return 1; 6176 } 6177 6178 return 0; 6179 } 6180 6181 /** 6182 * lpfc_els_disc_adisc - Issue remaining adisc iocbs to npr nodes of a vport 6183 * @vport: pointer to a host virtual N_Port data structure. 6184 * 6185 * This routine issues Address Discover (ADISC) ELS commands to those 6186 * N_Ports which are in node port recovery state and ADISC has not been issued 6187 * for the @vport. Each time an ELS ADISC IOCB is issued by invoking the 6188 * lpfc_issue_els_adisc() routine, the per @vport number of discover count 6189 * (num_disc_nodes) shall be incremented. If the num_disc_nodes reaches a 6190 * pre-configured threshold (cfg_discovery_threads), the @vport fc_flag will 6191 * be marked with FC_NLP_MORE bit and the process of issuing remaining ADISC 6192 * IOCBs quit for later pick up. On the other hand, after walking through 6193 * all the ndlps with the @vport and there is none ADISC IOCB issued, the 6194 * @vport fc_flag shall be cleared with FC_NLP_MORE bit indicating there is 6195 * no more ADISC need to be sent. 6196 * 6197 * Return code 6198 * The number of N_Ports with adisc issued. 6199 **/ 6200 int 6201 lpfc_els_disc_adisc(struct lpfc_vport *vport) 6202 { 6203 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 6204 struct lpfc_nodelist *ndlp, *next_ndlp; 6205 int sentadisc = 0; 6206 6207 /* go thru NPR nodes and issue any remaining ELS ADISCs */ 6208 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) { 6209 6210 if (ndlp->nlp_state != NLP_STE_NPR_NODE || 6211 !(ndlp->nlp_flag & NLP_NPR_ADISC)) 6212 continue; 6213 6214 spin_lock_irq(&ndlp->lock); 6215 ndlp->nlp_flag &= ~NLP_NPR_ADISC; 6216 spin_unlock_irq(&ndlp->lock); 6217 6218 if (!(ndlp->nlp_flag & NLP_NPR_2B_DISC)) { 6219 /* This node was marked for ADISC but was not picked 6220 * for discovery. This is possible if the node was 6221 * missing in gidft response. 6222 * 6223 * At time of marking node for ADISC, we skipped unreg 6224 * from backend 6225 */ 6226 lpfc_nlp_unreg_node(vport, ndlp); 6227 lpfc_unreg_rpi(vport, ndlp); 6228 continue; 6229 } 6230 6231 ndlp->nlp_prev_state = ndlp->nlp_state; 6232 lpfc_nlp_set_state(vport, ndlp, NLP_STE_ADISC_ISSUE); 6233 lpfc_issue_els_adisc(vport, ndlp, 0); 6234 sentadisc++; 6235 vport->num_disc_nodes++; 6236 if (vport->num_disc_nodes >= 6237 vport->cfg_discovery_threads) { 6238 spin_lock_irq(shost->host_lock); 6239 vport->fc_flag |= FC_NLP_MORE; 6240 spin_unlock_irq(shost->host_lock); 6241 break; 6242 } 6243 6244 } 6245 if (sentadisc == 0) { 6246 spin_lock_irq(shost->host_lock); 6247 vport->fc_flag &= ~FC_NLP_MORE; 6248 spin_unlock_irq(shost->host_lock); 6249 } 6250 return sentadisc; 6251 } 6252 6253 /** 6254 * lpfc_els_disc_plogi - Issue plogi for all npr nodes of a vport before adisc 6255 * @vport: pointer to a host virtual N_Port data structure. 6256 * 6257 * This routine issues Port Login (PLOGI) ELS commands to all the N_Ports 6258 * which are in node port recovery state, with a @vport. Each time an ELS 6259 * ADISC PLOGI IOCB is issued by invoking the lpfc_issue_els_plogi() routine, 6260 * the per @vport number of discover count (num_disc_nodes) shall be 6261 * incremented. If the num_disc_nodes reaches a pre-configured threshold 6262 * (cfg_discovery_threads), the @vport fc_flag will be marked with FC_NLP_MORE 6263 * bit set and quit the process of issuing remaining ADISC PLOGIN IOCBs for 6264 * later pick up. On the other hand, after walking through all the ndlps with 6265 * the @vport and there is none ADISC PLOGI IOCB issued, the @vport fc_flag 6266 * shall be cleared with the FC_NLP_MORE bit indicating there is no more ADISC 6267 * PLOGI need to be sent. 6268 * 6269 * Return code 6270 * The number of N_Ports with plogi issued. 6271 **/ 6272 int 6273 lpfc_els_disc_plogi(struct lpfc_vport *vport) 6274 { 6275 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 6276 struct lpfc_nodelist *ndlp, *next_ndlp; 6277 int sentplogi = 0; 6278 6279 /* go thru NPR nodes and issue any remaining ELS PLOGIs */ 6280 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) { 6281 if (ndlp->nlp_state == NLP_STE_NPR_NODE && 6282 (ndlp->nlp_flag & NLP_NPR_2B_DISC) != 0 && 6283 (ndlp->nlp_flag & NLP_DELAY_TMO) == 0 && 6284 (ndlp->nlp_flag & NLP_NPR_ADISC) == 0) { 6285 ndlp->nlp_prev_state = ndlp->nlp_state; 6286 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE); 6287 lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0); 6288 sentplogi++; 6289 vport->num_disc_nodes++; 6290 if (vport->num_disc_nodes >= 6291 vport->cfg_discovery_threads) { 6292 spin_lock_irq(shost->host_lock); 6293 vport->fc_flag |= FC_NLP_MORE; 6294 spin_unlock_irq(shost->host_lock); 6295 break; 6296 } 6297 } 6298 } 6299 6300 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, 6301 "6452 Discover PLOGI %d flag x%x\n", 6302 sentplogi, vport->fc_flag); 6303 6304 if (sentplogi) { 6305 lpfc_set_disctmo(vport); 6306 } 6307 else { 6308 spin_lock_irq(shost->host_lock); 6309 vport->fc_flag &= ~FC_NLP_MORE; 6310 spin_unlock_irq(shost->host_lock); 6311 } 6312 return sentplogi; 6313 } 6314 6315 static uint32_t 6316 lpfc_rdp_res_link_service(struct fc_rdp_link_service_desc *desc, 6317 uint32_t word0) 6318 { 6319 6320 desc->tag = cpu_to_be32(RDP_LINK_SERVICE_DESC_TAG); 6321 desc->payload.els_req = word0; 6322 desc->length = cpu_to_be32(sizeof(desc->payload)); 6323 6324 return sizeof(struct fc_rdp_link_service_desc); 6325 } 6326 6327 static uint32_t 6328 lpfc_rdp_res_sfp_desc(struct fc_rdp_sfp_desc *desc, 6329 uint8_t *page_a0, uint8_t *page_a2) 6330 { 6331 uint16_t wavelength; 6332 uint16_t temperature; 6333 uint16_t rx_power; 6334 uint16_t tx_bias; 6335 uint16_t tx_power; 6336 uint16_t vcc; 6337 uint16_t flag = 0; 6338 struct sff_trasnceiver_codes_byte4 *trasn_code_byte4; 6339 struct sff_trasnceiver_codes_byte5 *trasn_code_byte5; 6340 6341 desc->tag = cpu_to_be32(RDP_SFP_DESC_TAG); 6342 6343 trasn_code_byte4 = (struct sff_trasnceiver_codes_byte4 *) 6344 &page_a0[SSF_TRANSCEIVER_CODE_B4]; 6345 trasn_code_byte5 = (struct sff_trasnceiver_codes_byte5 *) 6346 &page_a0[SSF_TRANSCEIVER_CODE_B5]; 6347 6348 if ((trasn_code_byte4->fc_sw_laser) || 6349 (trasn_code_byte5->fc_sw_laser_sl) || 6350 (trasn_code_byte5->fc_sw_laser_sn)) { /* check if its short WL */ 6351 flag |= (SFP_FLAG_PT_SWLASER << SFP_FLAG_PT_SHIFT); 6352 } else if (trasn_code_byte4->fc_lw_laser) { 6353 wavelength = (page_a0[SSF_WAVELENGTH_B1] << 8) | 6354 page_a0[SSF_WAVELENGTH_B0]; 6355 if (wavelength == SFP_WAVELENGTH_LC1310) 6356 flag |= SFP_FLAG_PT_LWLASER_LC1310 << SFP_FLAG_PT_SHIFT; 6357 if (wavelength == SFP_WAVELENGTH_LL1550) 6358 flag |= SFP_FLAG_PT_LWLASER_LL1550 << SFP_FLAG_PT_SHIFT; 6359 } 6360 /* check if its SFP+ */ 6361 flag |= ((page_a0[SSF_IDENTIFIER] == SFF_PG0_IDENT_SFP) ? 6362 SFP_FLAG_CT_SFP_PLUS : SFP_FLAG_CT_UNKNOWN) 6363 << SFP_FLAG_CT_SHIFT; 6364 6365 /* check if its OPTICAL */ 6366 flag |= ((page_a0[SSF_CONNECTOR] == SFF_PG0_CONNECTOR_LC) ? 6367 SFP_FLAG_IS_OPTICAL_PORT : 0) 6368 << SFP_FLAG_IS_OPTICAL_SHIFT; 6369 6370 temperature = (page_a2[SFF_TEMPERATURE_B1] << 8 | 6371 page_a2[SFF_TEMPERATURE_B0]); 6372 vcc = (page_a2[SFF_VCC_B1] << 8 | 6373 page_a2[SFF_VCC_B0]); 6374 tx_power = (page_a2[SFF_TXPOWER_B1] << 8 | 6375 page_a2[SFF_TXPOWER_B0]); 6376 tx_bias = (page_a2[SFF_TX_BIAS_CURRENT_B1] << 8 | 6377 page_a2[SFF_TX_BIAS_CURRENT_B0]); 6378 rx_power = (page_a2[SFF_RXPOWER_B1] << 8 | 6379 page_a2[SFF_RXPOWER_B0]); 6380 desc->sfp_info.temperature = cpu_to_be16(temperature); 6381 desc->sfp_info.rx_power = cpu_to_be16(rx_power); 6382 desc->sfp_info.tx_bias = cpu_to_be16(tx_bias); 6383 desc->sfp_info.tx_power = cpu_to_be16(tx_power); 6384 desc->sfp_info.vcc = cpu_to_be16(vcc); 6385 6386 desc->sfp_info.flags = cpu_to_be16(flag); 6387 desc->length = cpu_to_be32(sizeof(desc->sfp_info)); 6388 6389 return sizeof(struct fc_rdp_sfp_desc); 6390 } 6391 6392 static uint32_t 6393 lpfc_rdp_res_link_error(struct fc_rdp_link_error_status_desc *desc, 6394 READ_LNK_VAR *stat) 6395 { 6396 uint32_t type; 6397 6398 desc->tag = cpu_to_be32(RDP_LINK_ERROR_STATUS_DESC_TAG); 6399 6400 type = VN_PT_PHY_PF_PORT << VN_PT_PHY_SHIFT; 6401 6402 desc->info.port_type = cpu_to_be32(type); 6403 6404 desc->info.link_status.link_failure_cnt = 6405 cpu_to_be32(stat->linkFailureCnt); 6406 desc->info.link_status.loss_of_synch_cnt = 6407 cpu_to_be32(stat->lossSyncCnt); 6408 desc->info.link_status.loss_of_signal_cnt = 6409 cpu_to_be32(stat->lossSignalCnt); 6410 desc->info.link_status.primitive_seq_proto_err = 6411 cpu_to_be32(stat->primSeqErrCnt); 6412 desc->info.link_status.invalid_trans_word = 6413 cpu_to_be32(stat->invalidXmitWord); 6414 desc->info.link_status.invalid_crc_cnt = cpu_to_be32(stat->crcCnt); 6415 6416 desc->length = cpu_to_be32(sizeof(desc->info)); 6417 6418 return sizeof(struct fc_rdp_link_error_status_desc); 6419 } 6420 6421 static uint32_t 6422 lpfc_rdp_res_bbc_desc(struct fc_rdp_bbc_desc *desc, READ_LNK_VAR *stat, 6423 struct lpfc_vport *vport) 6424 { 6425 uint32_t bbCredit; 6426 6427 desc->tag = cpu_to_be32(RDP_BBC_DESC_TAG); 6428 6429 bbCredit = vport->fc_sparam.cmn.bbCreditLsb | 6430 (vport->fc_sparam.cmn.bbCreditMsb << 8); 6431 desc->bbc_info.port_bbc = cpu_to_be32(bbCredit); 6432 if (vport->phba->fc_topology != LPFC_TOPOLOGY_LOOP) { 6433 bbCredit = vport->phba->fc_fabparam.cmn.bbCreditLsb | 6434 (vport->phba->fc_fabparam.cmn.bbCreditMsb << 8); 6435 desc->bbc_info.attached_port_bbc = cpu_to_be32(bbCredit); 6436 } else { 6437 desc->bbc_info.attached_port_bbc = 0; 6438 } 6439 6440 desc->bbc_info.rtt = 0; 6441 desc->length = cpu_to_be32(sizeof(desc->bbc_info)); 6442 6443 return sizeof(struct fc_rdp_bbc_desc); 6444 } 6445 6446 static uint32_t 6447 lpfc_rdp_res_oed_temp_desc(struct lpfc_hba *phba, 6448 struct fc_rdp_oed_sfp_desc *desc, uint8_t *page_a2) 6449 { 6450 uint32_t flags = 0; 6451 6452 desc->tag = cpu_to_be32(RDP_OED_DESC_TAG); 6453 6454 desc->oed_info.hi_alarm = page_a2[SSF_TEMP_HIGH_ALARM]; 6455 desc->oed_info.lo_alarm = page_a2[SSF_TEMP_LOW_ALARM]; 6456 desc->oed_info.hi_warning = page_a2[SSF_TEMP_HIGH_WARNING]; 6457 desc->oed_info.lo_warning = page_a2[SSF_TEMP_LOW_WARNING]; 6458 6459 if (phba->sfp_alarm & LPFC_TRANSGRESSION_HIGH_TEMPERATURE) 6460 flags |= RDP_OET_HIGH_ALARM; 6461 if (phba->sfp_alarm & LPFC_TRANSGRESSION_LOW_TEMPERATURE) 6462 flags |= RDP_OET_LOW_ALARM; 6463 if (phba->sfp_warning & LPFC_TRANSGRESSION_HIGH_TEMPERATURE) 6464 flags |= RDP_OET_HIGH_WARNING; 6465 if (phba->sfp_warning & LPFC_TRANSGRESSION_LOW_TEMPERATURE) 6466 flags |= RDP_OET_LOW_WARNING; 6467 6468 flags |= ((0xf & RDP_OED_TEMPERATURE) << RDP_OED_TYPE_SHIFT); 6469 desc->oed_info.function_flags = cpu_to_be32(flags); 6470 desc->length = cpu_to_be32(sizeof(desc->oed_info)); 6471 return sizeof(struct fc_rdp_oed_sfp_desc); 6472 } 6473 6474 static uint32_t 6475 lpfc_rdp_res_oed_voltage_desc(struct lpfc_hba *phba, 6476 struct fc_rdp_oed_sfp_desc *desc, 6477 uint8_t *page_a2) 6478 { 6479 uint32_t flags = 0; 6480 6481 desc->tag = cpu_to_be32(RDP_OED_DESC_TAG); 6482 6483 desc->oed_info.hi_alarm = page_a2[SSF_VOLTAGE_HIGH_ALARM]; 6484 desc->oed_info.lo_alarm = page_a2[SSF_VOLTAGE_LOW_ALARM]; 6485 desc->oed_info.hi_warning = page_a2[SSF_VOLTAGE_HIGH_WARNING]; 6486 desc->oed_info.lo_warning = page_a2[SSF_VOLTAGE_LOW_WARNING]; 6487 6488 if (phba->sfp_alarm & LPFC_TRANSGRESSION_HIGH_VOLTAGE) 6489 flags |= RDP_OET_HIGH_ALARM; 6490 if (phba->sfp_alarm & LPFC_TRANSGRESSION_LOW_VOLTAGE) 6491 flags |= RDP_OET_LOW_ALARM; 6492 if (phba->sfp_warning & LPFC_TRANSGRESSION_HIGH_VOLTAGE) 6493 flags |= RDP_OET_HIGH_WARNING; 6494 if (phba->sfp_warning & LPFC_TRANSGRESSION_LOW_VOLTAGE) 6495 flags |= RDP_OET_LOW_WARNING; 6496 6497 flags |= ((0xf & RDP_OED_VOLTAGE) << RDP_OED_TYPE_SHIFT); 6498 desc->oed_info.function_flags = cpu_to_be32(flags); 6499 desc->length = cpu_to_be32(sizeof(desc->oed_info)); 6500 return sizeof(struct fc_rdp_oed_sfp_desc); 6501 } 6502 6503 static uint32_t 6504 lpfc_rdp_res_oed_txbias_desc(struct lpfc_hba *phba, 6505 struct fc_rdp_oed_sfp_desc *desc, 6506 uint8_t *page_a2) 6507 { 6508 uint32_t flags = 0; 6509 6510 desc->tag = cpu_to_be32(RDP_OED_DESC_TAG); 6511 6512 desc->oed_info.hi_alarm = page_a2[SSF_BIAS_HIGH_ALARM]; 6513 desc->oed_info.lo_alarm = page_a2[SSF_BIAS_LOW_ALARM]; 6514 desc->oed_info.hi_warning = page_a2[SSF_BIAS_HIGH_WARNING]; 6515 desc->oed_info.lo_warning = page_a2[SSF_BIAS_LOW_WARNING]; 6516 6517 if (phba->sfp_alarm & LPFC_TRANSGRESSION_HIGH_TXBIAS) 6518 flags |= RDP_OET_HIGH_ALARM; 6519 if (phba->sfp_alarm & LPFC_TRANSGRESSION_LOW_TXBIAS) 6520 flags |= RDP_OET_LOW_ALARM; 6521 if (phba->sfp_warning & LPFC_TRANSGRESSION_HIGH_TXBIAS) 6522 flags |= RDP_OET_HIGH_WARNING; 6523 if (phba->sfp_warning & LPFC_TRANSGRESSION_LOW_TXBIAS) 6524 flags |= RDP_OET_LOW_WARNING; 6525 6526 flags |= ((0xf & RDP_OED_TXBIAS) << RDP_OED_TYPE_SHIFT); 6527 desc->oed_info.function_flags = cpu_to_be32(flags); 6528 desc->length = cpu_to_be32(sizeof(desc->oed_info)); 6529 return sizeof(struct fc_rdp_oed_sfp_desc); 6530 } 6531 6532 static uint32_t 6533 lpfc_rdp_res_oed_txpower_desc(struct lpfc_hba *phba, 6534 struct fc_rdp_oed_sfp_desc *desc, 6535 uint8_t *page_a2) 6536 { 6537 uint32_t flags = 0; 6538 6539 desc->tag = cpu_to_be32(RDP_OED_DESC_TAG); 6540 6541 desc->oed_info.hi_alarm = page_a2[SSF_TXPOWER_HIGH_ALARM]; 6542 desc->oed_info.lo_alarm = page_a2[SSF_TXPOWER_LOW_ALARM]; 6543 desc->oed_info.hi_warning = page_a2[SSF_TXPOWER_HIGH_WARNING]; 6544 desc->oed_info.lo_warning = page_a2[SSF_TXPOWER_LOW_WARNING]; 6545 6546 if (phba->sfp_alarm & LPFC_TRANSGRESSION_HIGH_TXPOWER) 6547 flags |= RDP_OET_HIGH_ALARM; 6548 if (phba->sfp_alarm & LPFC_TRANSGRESSION_LOW_TXPOWER) 6549 flags |= RDP_OET_LOW_ALARM; 6550 if (phba->sfp_warning & LPFC_TRANSGRESSION_HIGH_TXPOWER) 6551 flags |= RDP_OET_HIGH_WARNING; 6552 if (phba->sfp_warning & LPFC_TRANSGRESSION_LOW_TXPOWER) 6553 flags |= RDP_OET_LOW_WARNING; 6554 6555 flags |= ((0xf & RDP_OED_TXPOWER) << RDP_OED_TYPE_SHIFT); 6556 desc->oed_info.function_flags = cpu_to_be32(flags); 6557 desc->length = cpu_to_be32(sizeof(desc->oed_info)); 6558 return sizeof(struct fc_rdp_oed_sfp_desc); 6559 } 6560 6561 6562 static uint32_t 6563 lpfc_rdp_res_oed_rxpower_desc(struct lpfc_hba *phba, 6564 struct fc_rdp_oed_sfp_desc *desc, 6565 uint8_t *page_a2) 6566 { 6567 uint32_t flags = 0; 6568 6569 desc->tag = cpu_to_be32(RDP_OED_DESC_TAG); 6570 6571 desc->oed_info.hi_alarm = page_a2[SSF_RXPOWER_HIGH_ALARM]; 6572 desc->oed_info.lo_alarm = page_a2[SSF_RXPOWER_LOW_ALARM]; 6573 desc->oed_info.hi_warning = page_a2[SSF_RXPOWER_HIGH_WARNING]; 6574 desc->oed_info.lo_warning = page_a2[SSF_RXPOWER_LOW_WARNING]; 6575 6576 if (phba->sfp_alarm & LPFC_TRANSGRESSION_HIGH_RXPOWER) 6577 flags |= RDP_OET_HIGH_ALARM; 6578 if (phba->sfp_alarm & LPFC_TRANSGRESSION_LOW_RXPOWER) 6579 flags |= RDP_OET_LOW_ALARM; 6580 if (phba->sfp_warning & LPFC_TRANSGRESSION_HIGH_RXPOWER) 6581 flags |= RDP_OET_HIGH_WARNING; 6582 if (phba->sfp_warning & LPFC_TRANSGRESSION_LOW_RXPOWER) 6583 flags |= RDP_OET_LOW_WARNING; 6584 6585 flags |= ((0xf & RDP_OED_RXPOWER) << RDP_OED_TYPE_SHIFT); 6586 desc->oed_info.function_flags = cpu_to_be32(flags); 6587 desc->length = cpu_to_be32(sizeof(desc->oed_info)); 6588 return sizeof(struct fc_rdp_oed_sfp_desc); 6589 } 6590 6591 static uint32_t 6592 lpfc_rdp_res_opd_desc(struct fc_rdp_opd_sfp_desc *desc, 6593 uint8_t *page_a0, struct lpfc_vport *vport) 6594 { 6595 desc->tag = cpu_to_be32(RDP_OPD_DESC_TAG); 6596 memcpy(desc->opd_info.vendor_name, &page_a0[SSF_VENDOR_NAME], 16); 6597 memcpy(desc->opd_info.model_number, &page_a0[SSF_VENDOR_PN], 16); 6598 memcpy(desc->opd_info.serial_number, &page_a0[SSF_VENDOR_SN], 16); 6599 memcpy(desc->opd_info.revision, &page_a0[SSF_VENDOR_REV], 4); 6600 memcpy(desc->opd_info.date, &page_a0[SSF_DATE_CODE], 8); 6601 desc->length = cpu_to_be32(sizeof(desc->opd_info)); 6602 return sizeof(struct fc_rdp_opd_sfp_desc); 6603 } 6604 6605 static uint32_t 6606 lpfc_rdp_res_fec_desc(struct fc_fec_rdp_desc *desc, READ_LNK_VAR *stat) 6607 { 6608 if (bf_get(lpfc_read_link_stat_gec2, stat) == 0) 6609 return 0; 6610 desc->tag = cpu_to_be32(RDP_FEC_DESC_TAG); 6611 6612 desc->info.CorrectedBlocks = 6613 cpu_to_be32(stat->fecCorrBlkCount); 6614 desc->info.UncorrectableBlocks = 6615 cpu_to_be32(stat->fecUncorrBlkCount); 6616 6617 desc->length = cpu_to_be32(sizeof(desc->info)); 6618 6619 return sizeof(struct fc_fec_rdp_desc); 6620 } 6621 6622 static uint32_t 6623 lpfc_rdp_res_speed(struct fc_rdp_port_speed_desc *desc, struct lpfc_hba *phba) 6624 { 6625 uint16_t rdp_cap = 0; 6626 uint16_t rdp_speed; 6627 6628 desc->tag = cpu_to_be32(RDP_PORT_SPEED_DESC_TAG); 6629 6630 switch (phba->fc_linkspeed) { 6631 case LPFC_LINK_SPEED_1GHZ: 6632 rdp_speed = RDP_PS_1GB; 6633 break; 6634 case LPFC_LINK_SPEED_2GHZ: 6635 rdp_speed = RDP_PS_2GB; 6636 break; 6637 case LPFC_LINK_SPEED_4GHZ: 6638 rdp_speed = RDP_PS_4GB; 6639 break; 6640 case LPFC_LINK_SPEED_8GHZ: 6641 rdp_speed = RDP_PS_8GB; 6642 break; 6643 case LPFC_LINK_SPEED_10GHZ: 6644 rdp_speed = RDP_PS_10GB; 6645 break; 6646 case LPFC_LINK_SPEED_16GHZ: 6647 rdp_speed = RDP_PS_16GB; 6648 break; 6649 case LPFC_LINK_SPEED_32GHZ: 6650 rdp_speed = RDP_PS_32GB; 6651 break; 6652 case LPFC_LINK_SPEED_64GHZ: 6653 rdp_speed = RDP_PS_64GB; 6654 break; 6655 case LPFC_LINK_SPEED_128GHZ: 6656 rdp_speed = RDP_PS_128GB; 6657 break; 6658 case LPFC_LINK_SPEED_256GHZ: 6659 rdp_speed = RDP_PS_256GB; 6660 break; 6661 default: 6662 rdp_speed = RDP_PS_UNKNOWN; 6663 break; 6664 } 6665 6666 desc->info.port_speed.speed = cpu_to_be16(rdp_speed); 6667 6668 if (phba->lmt & LMT_256Gb) 6669 rdp_cap |= RDP_PS_256GB; 6670 if (phba->lmt & LMT_128Gb) 6671 rdp_cap |= RDP_PS_128GB; 6672 if (phba->lmt & LMT_64Gb) 6673 rdp_cap |= RDP_PS_64GB; 6674 if (phba->lmt & LMT_32Gb) 6675 rdp_cap |= RDP_PS_32GB; 6676 if (phba->lmt & LMT_16Gb) 6677 rdp_cap |= RDP_PS_16GB; 6678 if (phba->lmt & LMT_10Gb) 6679 rdp_cap |= RDP_PS_10GB; 6680 if (phba->lmt & LMT_8Gb) 6681 rdp_cap |= RDP_PS_8GB; 6682 if (phba->lmt & LMT_4Gb) 6683 rdp_cap |= RDP_PS_4GB; 6684 if (phba->lmt & LMT_2Gb) 6685 rdp_cap |= RDP_PS_2GB; 6686 if (phba->lmt & LMT_1Gb) 6687 rdp_cap |= RDP_PS_1GB; 6688 6689 if (rdp_cap == 0) 6690 rdp_cap = RDP_CAP_UNKNOWN; 6691 if (phba->cfg_link_speed != LPFC_USER_LINK_SPEED_AUTO) 6692 rdp_cap |= RDP_CAP_USER_CONFIGURED; 6693 6694 desc->info.port_speed.capabilities = cpu_to_be16(rdp_cap); 6695 desc->length = cpu_to_be32(sizeof(desc->info)); 6696 return sizeof(struct fc_rdp_port_speed_desc); 6697 } 6698 6699 static uint32_t 6700 lpfc_rdp_res_diag_port_names(struct fc_rdp_port_name_desc *desc, 6701 struct lpfc_vport *vport) 6702 { 6703 6704 desc->tag = cpu_to_be32(RDP_PORT_NAMES_DESC_TAG); 6705 6706 memcpy(desc->port_names.wwnn, &vport->fc_nodename, 6707 sizeof(desc->port_names.wwnn)); 6708 6709 memcpy(desc->port_names.wwpn, &vport->fc_portname, 6710 sizeof(desc->port_names.wwpn)); 6711 6712 desc->length = cpu_to_be32(sizeof(desc->port_names)); 6713 return sizeof(struct fc_rdp_port_name_desc); 6714 } 6715 6716 static uint32_t 6717 lpfc_rdp_res_attach_port_names(struct fc_rdp_port_name_desc *desc, 6718 struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) 6719 { 6720 6721 desc->tag = cpu_to_be32(RDP_PORT_NAMES_DESC_TAG); 6722 if (vport->fc_flag & FC_FABRIC) { 6723 memcpy(desc->port_names.wwnn, &vport->fabric_nodename, 6724 sizeof(desc->port_names.wwnn)); 6725 6726 memcpy(desc->port_names.wwpn, &vport->fabric_portname, 6727 sizeof(desc->port_names.wwpn)); 6728 } else { /* Point to Point */ 6729 memcpy(desc->port_names.wwnn, &ndlp->nlp_nodename, 6730 sizeof(desc->port_names.wwnn)); 6731 6732 memcpy(desc->port_names.wwpn, &ndlp->nlp_portname, 6733 sizeof(desc->port_names.wwpn)); 6734 } 6735 6736 desc->length = cpu_to_be32(sizeof(desc->port_names)); 6737 return sizeof(struct fc_rdp_port_name_desc); 6738 } 6739 6740 static void 6741 lpfc_els_rdp_cmpl(struct lpfc_hba *phba, struct lpfc_rdp_context *rdp_context, 6742 int status) 6743 { 6744 struct lpfc_nodelist *ndlp = rdp_context->ndlp; 6745 struct lpfc_vport *vport = ndlp->vport; 6746 struct lpfc_iocbq *elsiocb; 6747 struct ulp_bde64 *bpl; 6748 IOCB_t *icmd; 6749 uint8_t *pcmd; 6750 struct ls_rjt *stat; 6751 struct fc_rdp_res_frame *rdp_res; 6752 uint32_t cmdsize, len; 6753 uint16_t *flag_ptr; 6754 int rc; 6755 6756 if (status != SUCCESS) 6757 goto error; 6758 6759 /* This will change once we know the true size of the RDP payload */ 6760 cmdsize = sizeof(struct fc_rdp_res_frame); 6761 6762 elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, 6763 lpfc_max_els_tries, rdp_context->ndlp, 6764 rdp_context->ndlp->nlp_DID, ELS_CMD_ACC); 6765 if (!elsiocb) 6766 goto free_rdp_context; 6767 6768 icmd = &elsiocb->iocb; 6769 icmd->ulpContext = rdp_context->rx_id; 6770 icmd->unsli3.rcvsli3.ox_id = rdp_context->ox_id; 6771 6772 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, 6773 "2171 Xmit RDP response tag x%x xri x%x, " 6774 "did x%x, nlp_flag x%x, nlp_state x%x, rpi x%x", 6775 elsiocb->iotag, elsiocb->iocb.ulpContext, 6776 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state, 6777 ndlp->nlp_rpi); 6778 rdp_res = (struct fc_rdp_res_frame *) 6779 (((struct lpfc_dmabuf *) elsiocb->context2)->virt); 6780 pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt); 6781 memset(pcmd, 0, sizeof(struct fc_rdp_res_frame)); 6782 *((uint32_t *) (pcmd)) = ELS_CMD_ACC; 6783 6784 /* Update Alarm and Warning */ 6785 flag_ptr = (uint16_t *)(rdp_context->page_a2 + SSF_ALARM_FLAGS); 6786 phba->sfp_alarm |= *flag_ptr; 6787 flag_ptr = (uint16_t *)(rdp_context->page_a2 + SSF_WARNING_FLAGS); 6788 phba->sfp_warning |= *flag_ptr; 6789 6790 /* For RDP payload */ 6791 len = 8; 6792 len += lpfc_rdp_res_link_service((struct fc_rdp_link_service_desc *) 6793 (len + pcmd), ELS_CMD_RDP); 6794 6795 len += lpfc_rdp_res_sfp_desc((struct fc_rdp_sfp_desc *)(len + pcmd), 6796 rdp_context->page_a0, rdp_context->page_a2); 6797 len += lpfc_rdp_res_speed((struct fc_rdp_port_speed_desc *)(len + pcmd), 6798 phba); 6799 len += lpfc_rdp_res_link_error((struct fc_rdp_link_error_status_desc *) 6800 (len + pcmd), &rdp_context->link_stat); 6801 len += lpfc_rdp_res_diag_port_names((struct fc_rdp_port_name_desc *) 6802 (len + pcmd), vport); 6803 len += lpfc_rdp_res_attach_port_names((struct fc_rdp_port_name_desc *) 6804 (len + pcmd), vport, ndlp); 6805 len += lpfc_rdp_res_fec_desc((struct fc_fec_rdp_desc *)(len + pcmd), 6806 &rdp_context->link_stat); 6807 len += lpfc_rdp_res_bbc_desc((struct fc_rdp_bbc_desc *)(len + pcmd), 6808 &rdp_context->link_stat, vport); 6809 len += lpfc_rdp_res_oed_temp_desc(phba, 6810 (struct fc_rdp_oed_sfp_desc *)(len + pcmd), 6811 rdp_context->page_a2); 6812 len += lpfc_rdp_res_oed_voltage_desc(phba, 6813 (struct fc_rdp_oed_sfp_desc *)(len + pcmd), 6814 rdp_context->page_a2); 6815 len += lpfc_rdp_res_oed_txbias_desc(phba, 6816 (struct fc_rdp_oed_sfp_desc *)(len + pcmd), 6817 rdp_context->page_a2); 6818 len += lpfc_rdp_res_oed_txpower_desc(phba, 6819 (struct fc_rdp_oed_sfp_desc *)(len + pcmd), 6820 rdp_context->page_a2); 6821 len += lpfc_rdp_res_oed_rxpower_desc(phba, 6822 (struct fc_rdp_oed_sfp_desc *)(len + pcmd), 6823 rdp_context->page_a2); 6824 len += lpfc_rdp_res_opd_desc((struct fc_rdp_opd_sfp_desc *)(len + pcmd), 6825 rdp_context->page_a0, vport); 6826 6827 rdp_res->length = cpu_to_be32(len - 8); 6828 elsiocb->iocb_cmpl = lpfc_cmpl_els_rsp; 6829 6830 /* Now that we know the true size of the payload, update the BPL */ 6831 bpl = (struct ulp_bde64 *) 6832 (((struct lpfc_dmabuf *)(elsiocb->context3))->virt); 6833 bpl->tus.f.bdeSize = len; 6834 bpl->tus.f.bdeFlags = 0; 6835 bpl->tus.w = le32_to_cpu(bpl->tus.w); 6836 6837 phba->fc_stat.elsXmitACC++; 6838 elsiocb->context1 = lpfc_nlp_get(ndlp); 6839 if (!elsiocb->context1) { 6840 lpfc_els_free_iocb(phba, elsiocb); 6841 goto free_rdp_context; 6842 } 6843 6844 rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0); 6845 if (rc == IOCB_ERROR) { 6846 lpfc_els_free_iocb(phba, elsiocb); 6847 lpfc_nlp_put(ndlp); 6848 } 6849 6850 goto free_rdp_context; 6851 6852 error: 6853 cmdsize = 2 * sizeof(uint32_t); 6854 elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, lpfc_max_els_tries, 6855 ndlp, ndlp->nlp_DID, ELS_CMD_LS_RJT); 6856 if (!elsiocb) 6857 goto free_rdp_context; 6858 6859 icmd = &elsiocb->iocb; 6860 icmd->ulpContext = rdp_context->rx_id; 6861 icmd->unsli3.rcvsli3.ox_id = rdp_context->ox_id; 6862 pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt); 6863 6864 *((uint32_t *) (pcmd)) = ELS_CMD_LS_RJT; 6865 stat = (struct ls_rjt *)(pcmd + sizeof(uint32_t)); 6866 stat->un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC; 6867 6868 phba->fc_stat.elsXmitLSRJT++; 6869 elsiocb->iocb_cmpl = lpfc_cmpl_els_rsp; 6870 elsiocb->context1 = lpfc_nlp_get(ndlp); 6871 if (!elsiocb->context1) { 6872 lpfc_els_free_iocb(phba, elsiocb); 6873 goto free_rdp_context; 6874 } 6875 6876 rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0); 6877 if (rc == IOCB_ERROR) { 6878 lpfc_els_free_iocb(phba, elsiocb); 6879 lpfc_nlp_put(ndlp); 6880 } 6881 6882 free_rdp_context: 6883 /* This reference put is for the original unsolicited RDP. If the 6884 * iocb prep failed, there is no reference to remove. 6885 */ 6886 lpfc_nlp_put(ndlp); 6887 kfree(rdp_context); 6888 } 6889 6890 static int 6891 lpfc_get_rdp_info(struct lpfc_hba *phba, struct lpfc_rdp_context *rdp_context) 6892 { 6893 LPFC_MBOXQ_t *mbox = NULL; 6894 int rc; 6895 6896 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 6897 if (!mbox) { 6898 lpfc_printf_log(phba, KERN_WARNING, LOG_MBOX | LOG_ELS, 6899 "7105 failed to allocate mailbox memory"); 6900 return 1; 6901 } 6902 6903 if (lpfc_sli4_dump_page_a0(phba, mbox)) 6904 goto prep_mbox_fail; 6905 mbox->vport = rdp_context->ndlp->vport; 6906 mbox->mbox_cmpl = lpfc_mbx_cmpl_rdp_page_a0; 6907 mbox->ctx_ndlp = (struct lpfc_rdp_context *)rdp_context; 6908 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT); 6909 if (rc == MBX_NOT_FINISHED) 6910 goto issue_mbox_fail; 6911 6912 return 0; 6913 6914 prep_mbox_fail: 6915 issue_mbox_fail: 6916 mempool_free(mbox, phba->mbox_mem_pool); 6917 return 1; 6918 } 6919 6920 /* 6921 * lpfc_els_rcv_rdp - Process an unsolicited RDP ELS. 6922 * @vport: pointer to a host virtual N_Port data structure. 6923 * @cmdiocb: pointer to lpfc command iocb data structure. 6924 * @ndlp: pointer to a node-list data structure. 6925 * 6926 * This routine processes an unsolicited RDP(Read Diagnostic Parameters) 6927 * IOCB. First, the payload of the unsolicited RDP is checked. 6928 * Then it will (1) send MBX_DUMP_MEMORY, Embedded DMP_LMSD sub command TYPE-3 6929 * for Page A0, (2) send MBX_DUMP_MEMORY, DMP_LMSD for Page A2, 6930 * (3) send MBX_READ_LNK_STAT to get link stat, (4) Call lpfc_els_rdp_cmpl 6931 * gather all data and send RDP response. 6932 * 6933 * Return code 6934 * 0 - Sent the acc response 6935 * 1 - Sent the reject response. 6936 */ 6937 static int 6938 lpfc_els_rcv_rdp(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb, 6939 struct lpfc_nodelist *ndlp) 6940 { 6941 struct lpfc_hba *phba = vport->phba; 6942 struct lpfc_dmabuf *pcmd; 6943 uint8_t rjt_err, rjt_expl = LSEXP_NOTHING_MORE; 6944 struct fc_rdp_req_frame *rdp_req; 6945 struct lpfc_rdp_context *rdp_context; 6946 IOCB_t *cmd = NULL; 6947 struct ls_rjt stat; 6948 6949 if (phba->sli_rev < LPFC_SLI_REV4 || 6950 bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) < 6951 LPFC_SLI_INTF_IF_TYPE_2) { 6952 rjt_err = LSRJT_UNABLE_TPC; 6953 rjt_expl = LSEXP_REQ_UNSUPPORTED; 6954 goto error; 6955 } 6956 6957 if (phba->sli_rev < LPFC_SLI_REV4 || (phba->hba_flag & HBA_FCOE_MODE)) { 6958 rjt_err = LSRJT_UNABLE_TPC; 6959 rjt_expl = LSEXP_REQ_UNSUPPORTED; 6960 goto error; 6961 } 6962 6963 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2; 6964 rdp_req = (struct fc_rdp_req_frame *) pcmd->virt; 6965 6966 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, 6967 "2422 ELS RDP Request " 6968 "dec len %d tag x%x port_id %d len %d\n", 6969 be32_to_cpu(rdp_req->rdp_des_length), 6970 be32_to_cpu(rdp_req->nport_id_desc.tag), 6971 be32_to_cpu(rdp_req->nport_id_desc.nport_id), 6972 be32_to_cpu(rdp_req->nport_id_desc.length)); 6973 6974 if (sizeof(struct fc_rdp_nport_desc) != 6975 be32_to_cpu(rdp_req->rdp_des_length)) 6976 goto rjt_logerr; 6977 if (RDP_N_PORT_DESC_TAG != be32_to_cpu(rdp_req->nport_id_desc.tag)) 6978 goto rjt_logerr; 6979 if (RDP_NPORT_ID_SIZE != 6980 be32_to_cpu(rdp_req->nport_id_desc.length)) 6981 goto rjt_logerr; 6982 rdp_context = kzalloc(sizeof(struct lpfc_rdp_context), GFP_KERNEL); 6983 if (!rdp_context) { 6984 rjt_err = LSRJT_UNABLE_TPC; 6985 goto error; 6986 } 6987 6988 cmd = &cmdiocb->iocb; 6989 rdp_context->ndlp = lpfc_nlp_get(ndlp); 6990 if (!rdp_context->ndlp) { 6991 kfree(rdp_context); 6992 rjt_err = LSRJT_UNABLE_TPC; 6993 goto error; 6994 } 6995 rdp_context->ox_id = cmd->unsli3.rcvsli3.ox_id; 6996 rdp_context->rx_id = cmd->ulpContext; 6997 rdp_context->cmpl = lpfc_els_rdp_cmpl; 6998 if (lpfc_get_rdp_info(phba, rdp_context)) { 6999 lpfc_printf_vlog(ndlp->vport, KERN_WARNING, LOG_ELS, 7000 "2423 Unable to send mailbox"); 7001 kfree(rdp_context); 7002 rjt_err = LSRJT_UNABLE_TPC; 7003 lpfc_nlp_put(ndlp); 7004 goto error; 7005 } 7006 7007 return 0; 7008 7009 rjt_logerr: 7010 rjt_err = LSRJT_LOGICAL_ERR; 7011 7012 error: 7013 memset(&stat, 0, sizeof(stat)); 7014 stat.un.b.lsRjtRsnCode = rjt_err; 7015 stat.un.b.lsRjtRsnCodeExp = rjt_expl; 7016 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL); 7017 return 1; 7018 } 7019 7020 7021 static void 7022 lpfc_els_lcb_rsp(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 7023 { 7024 MAILBOX_t *mb; 7025 IOCB_t *icmd; 7026 uint8_t *pcmd; 7027 struct lpfc_iocbq *elsiocb; 7028 struct lpfc_nodelist *ndlp; 7029 struct ls_rjt *stat; 7030 union lpfc_sli4_cfg_shdr *shdr; 7031 struct lpfc_lcb_context *lcb_context; 7032 struct fc_lcb_res_frame *lcb_res; 7033 uint32_t cmdsize, shdr_status, shdr_add_status; 7034 int rc; 7035 7036 mb = &pmb->u.mb; 7037 lcb_context = (struct lpfc_lcb_context *)pmb->ctx_ndlp; 7038 ndlp = lcb_context->ndlp; 7039 pmb->ctx_ndlp = NULL; 7040 pmb->ctx_buf = NULL; 7041 7042 shdr = (union lpfc_sli4_cfg_shdr *) 7043 &pmb->u.mqe.un.beacon_config.header.cfg_shdr; 7044 shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response); 7045 shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response); 7046 7047 lpfc_printf_log(phba, KERN_INFO, LOG_MBOX, 7048 "0194 SET_BEACON_CONFIG mailbox " 7049 "completed with status x%x add_status x%x," 7050 " mbx status x%x\n", 7051 shdr_status, shdr_add_status, mb->mbxStatus); 7052 7053 if ((mb->mbxStatus != MBX_SUCCESS) || shdr_status || 7054 (shdr_add_status == ADD_STATUS_OPERATION_ALREADY_ACTIVE) || 7055 (shdr_add_status == ADD_STATUS_INVALID_REQUEST)) { 7056 mempool_free(pmb, phba->mbox_mem_pool); 7057 goto error; 7058 } 7059 7060 mempool_free(pmb, phba->mbox_mem_pool); 7061 cmdsize = sizeof(struct fc_lcb_res_frame); 7062 elsiocb = lpfc_prep_els_iocb(phba->pport, 0, cmdsize, 7063 lpfc_max_els_tries, ndlp, 7064 ndlp->nlp_DID, ELS_CMD_ACC); 7065 7066 /* Decrement the ndlp reference count from previous mbox command */ 7067 lpfc_nlp_put(ndlp); 7068 7069 if (!elsiocb) 7070 goto free_lcb_context; 7071 7072 lcb_res = (struct fc_lcb_res_frame *) 7073 (((struct lpfc_dmabuf *)elsiocb->context2)->virt); 7074 7075 memset(lcb_res, 0, sizeof(struct fc_lcb_res_frame)); 7076 icmd = &elsiocb->iocb; 7077 icmd->ulpContext = lcb_context->rx_id; 7078 icmd->unsli3.rcvsli3.ox_id = lcb_context->ox_id; 7079 7080 pcmd = (uint8_t *)(((struct lpfc_dmabuf *)elsiocb->context2)->virt); 7081 *((uint32_t *)(pcmd)) = ELS_CMD_ACC; 7082 lcb_res->lcb_sub_command = lcb_context->sub_command; 7083 lcb_res->lcb_type = lcb_context->type; 7084 lcb_res->capability = lcb_context->capability; 7085 lcb_res->lcb_frequency = lcb_context->frequency; 7086 lcb_res->lcb_duration = lcb_context->duration; 7087 elsiocb->iocb_cmpl = lpfc_cmpl_els_rsp; 7088 phba->fc_stat.elsXmitACC++; 7089 7090 elsiocb->context1 = lpfc_nlp_get(ndlp); 7091 if (!elsiocb->context1) { 7092 lpfc_els_free_iocb(phba, elsiocb); 7093 goto out; 7094 } 7095 7096 rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0); 7097 if (rc == IOCB_ERROR) { 7098 lpfc_els_free_iocb(phba, elsiocb); 7099 lpfc_nlp_put(ndlp); 7100 } 7101 out: 7102 kfree(lcb_context); 7103 return; 7104 7105 error: 7106 cmdsize = sizeof(struct fc_lcb_res_frame); 7107 elsiocb = lpfc_prep_els_iocb(phba->pport, 0, cmdsize, 7108 lpfc_max_els_tries, ndlp, 7109 ndlp->nlp_DID, ELS_CMD_LS_RJT); 7110 lpfc_nlp_put(ndlp); 7111 if (!elsiocb) 7112 goto free_lcb_context; 7113 7114 icmd = &elsiocb->iocb; 7115 icmd->ulpContext = lcb_context->rx_id; 7116 icmd->unsli3.rcvsli3.ox_id = lcb_context->ox_id; 7117 pcmd = (uint8_t *)(((struct lpfc_dmabuf *)elsiocb->context2)->virt); 7118 7119 *((uint32_t *)(pcmd)) = ELS_CMD_LS_RJT; 7120 stat = (struct ls_rjt *)(pcmd + sizeof(uint32_t)); 7121 stat->un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC; 7122 7123 if (shdr_add_status == ADD_STATUS_OPERATION_ALREADY_ACTIVE) 7124 stat->un.b.lsRjtRsnCodeExp = LSEXP_CMD_IN_PROGRESS; 7125 7126 elsiocb->iocb_cmpl = lpfc_cmpl_els_rsp; 7127 phba->fc_stat.elsXmitLSRJT++; 7128 elsiocb->context1 = lpfc_nlp_get(ndlp); 7129 if (!elsiocb->context1) { 7130 lpfc_els_free_iocb(phba, elsiocb); 7131 goto free_lcb_context; 7132 } 7133 7134 rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0); 7135 if (rc == IOCB_ERROR) { 7136 lpfc_els_free_iocb(phba, elsiocb); 7137 lpfc_nlp_put(ndlp); 7138 } 7139 free_lcb_context: 7140 kfree(lcb_context); 7141 } 7142 7143 static int 7144 lpfc_sli4_set_beacon(struct lpfc_vport *vport, 7145 struct lpfc_lcb_context *lcb_context, 7146 uint32_t beacon_state) 7147 { 7148 struct lpfc_hba *phba = vport->phba; 7149 union lpfc_sli4_cfg_shdr *cfg_shdr; 7150 LPFC_MBOXQ_t *mbox = NULL; 7151 uint32_t len; 7152 int rc; 7153 7154 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 7155 if (!mbox) 7156 return 1; 7157 7158 cfg_shdr = &mbox->u.mqe.un.sli4_config.header.cfg_shdr; 7159 len = sizeof(struct lpfc_mbx_set_beacon_config) - 7160 sizeof(struct lpfc_sli4_cfg_mhdr); 7161 lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_COMMON, 7162 LPFC_MBOX_OPCODE_SET_BEACON_CONFIG, len, 7163 LPFC_SLI4_MBX_EMBED); 7164 mbox->ctx_ndlp = (void *)lcb_context; 7165 mbox->vport = phba->pport; 7166 mbox->mbox_cmpl = lpfc_els_lcb_rsp; 7167 bf_set(lpfc_mbx_set_beacon_port_num, &mbox->u.mqe.un.beacon_config, 7168 phba->sli4_hba.physical_port); 7169 bf_set(lpfc_mbx_set_beacon_state, &mbox->u.mqe.un.beacon_config, 7170 beacon_state); 7171 mbox->u.mqe.un.beacon_config.word5 = 0; /* Reserved */ 7172 7173 /* 7174 * Check bv1s bit before issuing the mailbox 7175 * if bv1s == 1, LCB V1 supported 7176 * else, LCB V0 supported 7177 */ 7178 7179 if (phba->sli4_hba.pc_sli4_params.bv1s) { 7180 /* COMMON_SET_BEACON_CONFIG_V1 */ 7181 cfg_shdr->request.word9 = BEACON_VERSION_V1; 7182 lcb_context->capability |= LCB_CAPABILITY_DURATION; 7183 bf_set(lpfc_mbx_set_beacon_port_type, 7184 &mbox->u.mqe.un.beacon_config, 0); 7185 bf_set(lpfc_mbx_set_beacon_duration_v1, 7186 &mbox->u.mqe.un.beacon_config, 7187 be16_to_cpu(lcb_context->duration)); 7188 } else { 7189 /* COMMON_SET_BEACON_CONFIG_V0 */ 7190 if (be16_to_cpu(lcb_context->duration) != 0) { 7191 mempool_free(mbox, phba->mbox_mem_pool); 7192 return 1; 7193 } 7194 cfg_shdr->request.word9 = BEACON_VERSION_V0; 7195 lcb_context->capability &= ~(LCB_CAPABILITY_DURATION); 7196 bf_set(lpfc_mbx_set_beacon_state, 7197 &mbox->u.mqe.un.beacon_config, beacon_state); 7198 bf_set(lpfc_mbx_set_beacon_port_type, 7199 &mbox->u.mqe.un.beacon_config, 1); 7200 bf_set(lpfc_mbx_set_beacon_duration, 7201 &mbox->u.mqe.un.beacon_config, 7202 be16_to_cpu(lcb_context->duration)); 7203 } 7204 7205 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT); 7206 if (rc == MBX_NOT_FINISHED) { 7207 mempool_free(mbox, phba->mbox_mem_pool); 7208 return 1; 7209 } 7210 7211 return 0; 7212 } 7213 7214 7215 /** 7216 * lpfc_els_rcv_lcb - Process an unsolicited LCB 7217 * @vport: pointer to a host virtual N_Port data structure. 7218 * @cmdiocb: pointer to lpfc command iocb data structure. 7219 * @ndlp: pointer to a node-list data structure. 7220 * 7221 * This routine processes an unsolicited LCB(LINK CABLE BEACON) IOCB. 7222 * First, the payload of the unsolicited LCB is checked. 7223 * Then based on Subcommand beacon will either turn on or off. 7224 * 7225 * Return code 7226 * 0 - Sent the acc response 7227 * 1 - Sent the reject response. 7228 **/ 7229 static int 7230 lpfc_els_rcv_lcb(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb, 7231 struct lpfc_nodelist *ndlp) 7232 { 7233 struct lpfc_hba *phba = vport->phba; 7234 struct lpfc_dmabuf *pcmd; 7235 uint8_t *lp; 7236 struct fc_lcb_request_frame *beacon; 7237 struct lpfc_lcb_context *lcb_context; 7238 u8 state, rjt_err = 0; 7239 struct ls_rjt stat; 7240 7241 pcmd = (struct lpfc_dmabuf *)cmdiocb->context2; 7242 lp = (uint8_t *)pcmd->virt; 7243 beacon = (struct fc_lcb_request_frame *)pcmd->virt; 7244 7245 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, 7246 "0192 ELS LCB Data x%x x%x x%x x%x sub x%x " 7247 "type x%x frequency %x duration x%x\n", 7248 lp[0], lp[1], lp[2], 7249 beacon->lcb_command, 7250 beacon->lcb_sub_command, 7251 beacon->lcb_type, 7252 beacon->lcb_frequency, 7253 be16_to_cpu(beacon->lcb_duration)); 7254 7255 if (beacon->lcb_sub_command != LPFC_LCB_ON && 7256 beacon->lcb_sub_command != LPFC_LCB_OFF) { 7257 rjt_err = LSRJT_CMD_UNSUPPORTED; 7258 goto rjt; 7259 } 7260 7261 if (phba->sli_rev < LPFC_SLI_REV4 || 7262 phba->hba_flag & HBA_FCOE_MODE || 7263 (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) < 7264 LPFC_SLI_INTF_IF_TYPE_2)) { 7265 rjt_err = LSRJT_CMD_UNSUPPORTED; 7266 goto rjt; 7267 } 7268 7269 lcb_context = kmalloc(sizeof(*lcb_context), GFP_KERNEL); 7270 if (!lcb_context) { 7271 rjt_err = LSRJT_UNABLE_TPC; 7272 goto rjt; 7273 } 7274 7275 state = (beacon->lcb_sub_command == LPFC_LCB_ON) ? 1 : 0; 7276 lcb_context->sub_command = beacon->lcb_sub_command; 7277 lcb_context->capability = 0; 7278 lcb_context->type = beacon->lcb_type; 7279 lcb_context->frequency = beacon->lcb_frequency; 7280 lcb_context->duration = beacon->lcb_duration; 7281 lcb_context->ox_id = cmdiocb->iocb.unsli3.rcvsli3.ox_id; 7282 lcb_context->rx_id = cmdiocb->iocb.ulpContext; 7283 lcb_context->ndlp = lpfc_nlp_get(ndlp); 7284 if (!lcb_context->ndlp) { 7285 rjt_err = LSRJT_UNABLE_TPC; 7286 goto rjt_free; 7287 } 7288 7289 if (lpfc_sli4_set_beacon(vport, lcb_context, state)) { 7290 lpfc_printf_vlog(ndlp->vport, KERN_ERR, LOG_TRACE_EVENT, 7291 "0193 failed to send mail box"); 7292 lpfc_nlp_put(ndlp); 7293 rjt_err = LSRJT_UNABLE_TPC; 7294 goto rjt_free; 7295 } 7296 return 0; 7297 7298 rjt_free: 7299 kfree(lcb_context); 7300 rjt: 7301 memset(&stat, 0, sizeof(stat)); 7302 stat.un.b.lsRjtRsnCode = rjt_err; 7303 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL); 7304 return 1; 7305 } 7306 7307 7308 /** 7309 * lpfc_els_flush_rscn - Clean up any rscn activities with a vport 7310 * @vport: pointer to a host virtual N_Port data structure. 7311 * 7312 * This routine cleans up any Registration State Change Notification 7313 * (RSCN) activity with a @vport. Note that the fc_rscn_flush flag of the 7314 * @vport together with the host_lock is used to prevent multiple thread 7315 * trying to access the RSCN array on a same @vport at the same time. 7316 **/ 7317 void 7318 lpfc_els_flush_rscn(struct lpfc_vport *vport) 7319 { 7320 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 7321 struct lpfc_hba *phba = vport->phba; 7322 int i; 7323 7324 spin_lock_irq(shost->host_lock); 7325 if (vport->fc_rscn_flush) { 7326 /* Another thread is walking fc_rscn_id_list on this vport */ 7327 spin_unlock_irq(shost->host_lock); 7328 return; 7329 } 7330 /* Indicate we are walking lpfc_els_flush_rscn on this vport */ 7331 vport->fc_rscn_flush = 1; 7332 spin_unlock_irq(shost->host_lock); 7333 7334 for (i = 0; i < vport->fc_rscn_id_cnt; i++) { 7335 lpfc_in_buf_free(phba, vport->fc_rscn_id_list[i]); 7336 vport->fc_rscn_id_list[i] = NULL; 7337 } 7338 spin_lock_irq(shost->host_lock); 7339 vport->fc_rscn_id_cnt = 0; 7340 vport->fc_flag &= ~(FC_RSCN_MODE | FC_RSCN_DISCOVERY); 7341 spin_unlock_irq(shost->host_lock); 7342 lpfc_can_disctmo(vport); 7343 /* Indicate we are done walking this fc_rscn_id_list */ 7344 vport->fc_rscn_flush = 0; 7345 } 7346 7347 /** 7348 * lpfc_rscn_payload_check - Check whether there is a pending rscn to a did 7349 * @vport: pointer to a host virtual N_Port data structure. 7350 * @did: remote destination port identifier. 7351 * 7352 * This routine checks whether there is any pending Registration State 7353 * Configuration Notification (RSCN) to a @did on @vport. 7354 * 7355 * Return code 7356 * None zero - The @did matched with a pending rscn 7357 * 0 - not able to match @did with a pending rscn 7358 **/ 7359 int 7360 lpfc_rscn_payload_check(struct lpfc_vport *vport, uint32_t did) 7361 { 7362 D_ID ns_did; 7363 D_ID rscn_did; 7364 uint32_t *lp; 7365 uint32_t payload_len, i; 7366 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 7367 7368 ns_did.un.word = did; 7369 7370 /* Never match fabric nodes for RSCNs */ 7371 if ((did & Fabric_DID_MASK) == Fabric_DID_MASK) 7372 return 0; 7373 7374 /* If we are doing a FULL RSCN rediscovery, match everything */ 7375 if (vport->fc_flag & FC_RSCN_DISCOVERY) 7376 return did; 7377 7378 spin_lock_irq(shost->host_lock); 7379 if (vport->fc_rscn_flush) { 7380 /* Another thread is walking fc_rscn_id_list on this vport */ 7381 spin_unlock_irq(shost->host_lock); 7382 return 0; 7383 } 7384 /* Indicate we are walking fc_rscn_id_list on this vport */ 7385 vport->fc_rscn_flush = 1; 7386 spin_unlock_irq(shost->host_lock); 7387 for (i = 0; i < vport->fc_rscn_id_cnt; i++) { 7388 lp = vport->fc_rscn_id_list[i]->virt; 7389 payload_len = be32_to_cpu(*lp++ & ~ELS_CMD_MASK); 7390 payload_len -= sizeof(uint32_t); /* take off word 0 */ 7391 while (payload_len) { 7392 rscn_did.un.word = be32_to_cpu(*lp++); 7393 payload_len -= sizeof(uint32_t); 7394 switch (rscn_did.un.b.resv & RSCN_ADDRESS_FORMAT_MASK) { 7395 case RSCN_ADDRESS_FORMAT_PORT: 7396 if ((ns_did.un.b.domain == rscn_did.un.b.domain) 7397 && (ns_did.un.b.area == rscn_did.un.b.area) 7398 && (ns_did.un.b.id == rscn_did.un.b.id)) 7399 goto return_did_out; 7400 break; 7401 case RSCN_ADDRESS_FORMAT_AREA: 7402 if ((ns_did.un.b.domain == rscn_did.un.b.domain) 7403 && (ns_did.un.b.area == rscn_did.un.b.area)) 7404 goto return_did_out; 7405 break; 7406 case RSCN_ADDRESS_FORMAT_DOMAIN: 7407 if (ns_did.un.b.domain == rscn_did.un.b.domain) 7408 goto return_did_out; 7409 break; 7410 case RSCN_ADDRESS_FORMAT_FABRIC: 7411 goto return_did_out; 7412 } 7413 } 7414 } 7415 /* Indicate we are done with walking fc_rscn_id_list on this vport */ 7416 vport->fc_rscn_flush = 0; 7417 return 0; 7418 return_did_out: 7419 /* Indicate we are done with walking fc_rscn_id_list on this vport */ 7420 vport->fc_rscn_flush = 0; 7421 return did; 7422 } 7423 7424 /** 7425 * lpfc_rscn_recovery_check - Send recovery event to vport nodes matching rscn 7426 * @vport: pointer to a host virtual N_Port data structure. 7427 * 7428 * This routine sends recovery (NLP_EVT_DEVICE_RECOVERY) event to the 7429 * state machine for a @vport's nodes that are with pending RSCN (Registration 7430 * State Change Notification). 7431 * 7432 * Return code 7433 * 0 - Successful (currently alway return 0) 7434 **/ 7435 static int 7436 lpfc_rscn_recovery_check(struct lpfc_vport *vport) 7437 { 7438 struct lpfc_nodelist *ndlp = NULL; 7439 7440 /* Move all affected nodes by pending RSCNs to NPR state. */ 7441 list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) { 7442 if ((ndlp->nlp_state == NLP_STE_UNUSED_NODE) || 7443 !lpfc_rscn_payload_check(vport, ndlp->nlp_DID)) 7444 continue; 7445 7446 /* NVME Target mode does not do RSCN Recovery. */ 7447 if (vport->phba->nvmet_support) 7448 continue; 7449 7450 /* If we are in the process of doing discovery on this 7451 * NPort, let it continue on its own. 7452 */ 7453 switch (ndlp->nlp_state) { 7454 case NLP_STE_PLOGI_ISSUE: 7455 case NLP_STE_ADISC_ISSUE: 7456 case NLP_STE_REG_LOGIN_ISSUE: 7457 case NLP_STE_PRLI_ISSUE: 7458 case NLP_STE_LOGO_ISSUE: 7459 continue; 7460 } 7461 7462 lpfc_disc_state_machine(vport, ndlp, NULL, 7463 NLP_EVT_DEVICE_RECOVERY); 7464 lpfc_cancel_retry_delay_tmo(vport, ndlp); 7465 } 7466 return 0; 7467 } 7468 7469 /** 7470 * lpfc_send_rscn_event - Send an RSCN event to management application 7471 * @vport: pointer to a host virtual N_Port data structure. 7472 * @cmdiocb: pointer to lpfc command iocb data structure. 7473 * 7474 * lpfc_send_rscn_event sends an RSCN netlink event to management 7475 * applications. 7476 */ 7477 static void 7478 lpfc_send_rscn_event(struct lpfc_vport *vport, 7479 struct lpfc_iocbq *cmdiocb) 7480 { 7481 struct lpfc_dmabuf *pcmd; 7482 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 7483 uint32_t *payload_ptr; 7484 uint32_t payload_len; 7485 struct lpfc_rscn_event_header *rscn_event_data; 7486 7487 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2; 7488 payload_ptr = (uint32_t *) pcmd->virt; 7489 payload_len = be32_to_cpu(*payload_ptr & ~ELS_CMD_MASK); 7490 7491 rscn_event_data = kmalloc(sizeof(struct lpfc_rscn_event_header) + 7492 payload_len, GFP_KERNEL); 7493 if (!rscn_event_data) { 7494 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 7495 "0147 Failed to allocate memory for RSCN event\n"); 7496 return; 7497 } 7498 rscn_event_data->event_type = FC_REG_RSCN_EVENT; 7499 rscn_event_data->payload_length = payload_len; 7500 memcpy(rscn_event_data->rscn_payload, payload_ptr, 7501 payload_len); 7502 7503 fc_host_post_vendor_event(shost, 7504 fc_get_event_number(), 7505 sizeof(struct lpfc_rscn_event_header) + payload_len, 7506 (char *)rscn_event_data, 7507 LPFC_NL_VENDOR_ID); 7508 7509 kfree(rscn_event_data); 7510 } 7511 7512 /** 7513 * lpfc_els_rcv_rscn - Process an unsolicited rscn iocb 7514 * @vport: pointer to a host virtual N_Port data structure. 7515 * @cmdiocb: pointer to lpfc command iocb data structure. 7516 * @ndlp: pointer to a node-list data structure. 7517 * 7518 * This routine processes an unsolicited RSCN (Registration State Change 7519 * Notification) IOCB. First, the payload of the unsolicited RSCN is walked 7520 * to invoke fc_host_post_event() routine to the FC transport layer. If the 7521 * discover state machine is about to begin discovery, it just accepts the 7522 * RSCN and the discovery process will satisfy the RSCN. If this RSCN only 7523 * contains N_Port IDs for other vports on this HBA, it just accepts the 7524 * RSCN and ignore processing it. If the state machine is in the recovery 7525 * state, the fc_rscn_id_list of this @vport is walked and the 7526 * lpfc_rscn_recovery_check() routine is invoked to send recovery event for 7527 * all nodes that match RSCN payload. Otherwise, the lpfc_els_handle_rscn() 7528 * routine is invoked to handle the RSCN event. 7529 * 7530 * Return code 7531 * 0 - Just sent the acc response 7532 * 1 - Sent the acc response and waited for name server completion 7533 **/ 7534 static int 7535 lpfc_els_rcv_rscn(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb, 7536 struct lpfc_nodelist *ndlp) 7537 { 7538 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 7539 struct lpfc_hba *phba = vport->phba; 7540 struct lpfc_dmabuf *pcmd; 7541 uint32_t *lp, *datap; 7542 uint32_t payload_len, length, nportid, *cmd; 7543 int rscn_cnt; 7544 int rscn_id = 0, hba_id = 0; 7545 int i, tmo; 7546 7547 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2; 7548 lp = (uint32_t *) pcmd->virt; 7549 7550 payload_len = be32_to_cpu(*lp++ & ~ELS_CMD_MASK); 7551 payload_len -= sizeof(uint32_t); /* take off word 0 */ 7552 /* RSCN received */ 7553 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, 7554 "0214 RSCN received Data: x%x x%x x%x x%x\n", 7555 vport->fc_flag, payload_len, *lp, 7556 vport->fc_rscn_id_cnt); 7557 7558 /* Send an RSCN event to the management application */ 7559 lpfc_send_rscn_event(vport, cmdiocb); 7560 7561 for (i = 0; i < payload_len/sizeof(uint32_t); i++) 7562 fc_host_post_event(shost, fc_get_event_number(), 7563 FCH_EVT_RSCN, lp[i]); 7564 7565 /* Check if RSCN is coming from a direct-connected remote NPort */ 7566 if (vport->fc_flag & FC_PT2PT) { 7567 /* If so, just ACC it, no other action needed for now */ 7568 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, 7569 "2024 pt2pt RSCN %08x Data: x%x x%x\n", 7570 *lp, vport->fc_flag, payload_len); 7571 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL); 7572 7573 /* Check to see if we need to NVME rescan this target 7574 * remoteport. 7575 */ 7576 if (ndlp->nlp_fc4_type & NLP_FC4_NVME && 7577 ndlp->nlp_type & (NLP_NVME_TARGET | NLP_NVME_DISCOVERY)) 7578 lpfc_nvme_rescan_port(vport, ndlp); 7579 return 0; 7580 } 7581 7582 /* If we are about to begin discovery, just ACC the RSCN. 7583 * Discovery processing will satisfy it. 7584 */ 7585 if (vport->port_state <= LPFC_NS_QRY) { 7586 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL, 7587 "RCV RSCN ignore: did:x%x/ste:x%x flg:x%x", 7588 ndlp->nlp_DID, vport->port_state, ndlp->nlp_flag); 7589 7590 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL); 7591 return 0; 7592 } 7593 7594 /* If this RSCN just contains NPortIDs for other vports on this HBA, 7595 * just ACC and ignore it. 7596 */ 7597 if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) && 7598 !(vport->cfg_peer_port_login)) { 7599 i = payload_len; 7600 datap = lp; 7601 while (i > 0) { 7602 nportid = *datap++; 7603 nportid = ((be32_to_cpu(nportid)) & Mask_DID); 7604 i -= sizeof(uint32_t); 7605 rscn_id++; 7606 if (lpfc_find_vport_by_did(phba, nportid)) 7607 hba_id++; 7608 } 7609 if (rscn_id == hba_id) { 7610 /* ALL NPortIDs in RSCN are on HBA */ 7611 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, 7612 "0219 Ignore RSCN " 7613 "Data: x%x x%x x%x x%x\n", 7614 vport->fc_flag, payload_len, 7615 *lp, vport->fc_rscn_id_cnt); 7616 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL, 7617 "RCV RSCN vport: did:x%x/ste:x%x flg:x%x", 7618 ndlp->nlp_DID, vport->port_state, 7619 ndlp->nlp_flag); 7620 7621 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, 7622 ndlp, NULL); 7623 return 0; 7624 } 7625 } 7626 7627 spin_lock_irq(shost->host_lock); 7628 if (vport->fc_rscn_flush) { 7629 /* Another thread is walking fc_rscn_id_list on this vport */ 7630 vport->fc_flag |= FC_RSCN_DISCOVERY; 7631 spin_unlock_irq(shost->host_lock); 7632 /* Send back ACC */ 7633 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL); 7634 return 0; 7635 } 7636 /* Indicate we are walking fc_rscn_id_list on this vport */ 7637 vport->fc_rscn_flush = 1; 7638 spin_unlock_irq(shost->host_lock); 7639 /* Get the array count after successfully have the token */ 7640 rscn_cnt = vport->fc_rscn_id_cnt; 7641 /* If we are already processing an RSCN, save the received 7642 * RSCN payload buffer, cmdiocb->context2 to process later. 7643 */ 7644 if (vport->fc_flag & (FC_RSCN_MODE | FC_NDISC_ACTIVE)) { 7645 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL, 7646 "RCV RSCN defer: did:x%x/ste:x%x flg:x%x", 7647 ndlp->nlp_DID, vport->port_state, ndlp->nlp_flag); 7648 7649 spin_lock_irq(shost->host_lock); 7650 vport->fc_flag |= FC_RSCN_DEFERRED; 7651 7652 /* Restart disctmo if its already running */ 7653 if (vport->fc_flag & FC_DISC_TMO) { 7654 tmo = ((phba->fc_ratov * 3) + 3); 7655 mod_timer(&vport->fc_disctmo, 7656 jiffies + msecs_to_jiffies(1000 * tmo)); 7657 } 7658 if ((rscn_cnt < FC_MAX_HOLD_RSCN) && 7659 !(vport->fc_flag & FC_RSCN_DISCOVERY)) { 7660 vport->fc_flag |= FC_RSCN_MODE; 7661 spin_unlock_irq(shost->host_lock); 7662 if (rscn_cnt) { 7663 cmd = vport->fc_rscn_id_list[rscn_cnt-1]->virt; 7664 length = be32_to_cpu(*cmd & ~ELS_CMD_MASK); 7665 } 7666 if ((rscn_cnt) && 7667 (payload_len + length <= LPFC_BPL_SIZE)) { 7668 *cmd &= ELS_CMD_MASK; 7669 *cmd |= cpu_to_be32(payload_len + length); 7670 memcpy(((uint8_t *)cmd) + length, lp, 7671 payload_len); 7672 } else { 7673 vport->fc_rscn_id_list[rscn_cnt] = pcmd; 7674 vport->fc_rscn_id_cnt++; 7675 /* If we zero, cmdiocb->context2, the calling 7676 * routine will not try to free it. 7677 */ 7678 cmdiocb->context2 = NULL; 7679 } 7680 /* Deferred RSCN */ 7681 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, 7682 "0235 Deferred RSCN " 7683 "Data: x%x x%x x%x\n", 7684 vport->fc_rscn_id_cnt, vport->fc_flag, 7685 vport->port_state); 7686 } else { 7687 vport->fc_flag |= FC_RSCN_DISCOVERY; 7688 spin_unlock_irq(shost->host_lock); 7689 /* ReDiscovery RSCN */ 7690 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, 7691 "0234 ReDiscovery RSCN " 7692 "Data: x%x x%x x%x\n", 7693 vport->fc_rscn_id_cnt, vport->fc_flag, 7694 vport->port_state); 7695 } 7696 /* Indicate we are done walking fc_rscn_id_list on this vport */ 7697 vport->fc_rscn_flush = 0; 7698 /* Send back ACC */ 7699 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL); 7700 /* send RECOVERY event for ALL nodes that match RSCN payload */ 7701 lpfc_rscn_recovery_check(vport); 7702 return 0; 7703 } 7704 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL, 7705 "RCV RSCN: did:x%x/ste:x%x flg:x%x", 7706 ndlp->nlp_DID, vport->port_state, ndlp->nlp_flag); 7707 7708 spin_lock_irq(shost->host_lock); 7709 vport->fc_flag |= FC_RSCN_MODE; 7710 spin_unlock_irq(shost->host_lock); 7711 vport->fc_rscn_id_list[vport->fc_rscn_id_cnt++] = pcmd; 7712 /* Indicate we are done walking fc_rscn_id_list on this vport */ 7713 vport->fc_rscn_flush = 0; 7714 /* 7715 * If we zero, cmdiocb->context2, the calling routine will 7716 * not try to free it. 7717 */ 7718 cmdiocb->context2 = NULL; 7719 lpfc_set_disctmo(vport); 7720 /* Send back ACC */ 7721 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL); 7722 /* send RECOVERY event for ALL nodes that match RSCN payload */ 7723 lpfc_rscn_recovery_check(vport); 7724 return lpfc_els_handle_rscn(vport); 7725 } 7726 7727 /** 7728 * lpfc_els_handle_rscn - Handle rscn for a vport 7729 * @vport: pointer to a host virtual N_Port data structure. 7730 * 7731 * This routine handles the Registration State Configuration Notification 7732 * (RSCN) for a @vport. If login to NameServer does not exist, a new ndlp shall 7733 * be created and a Port Login (PLOGI) to the NameServer is issued. Otherwise, 7734 * if the ndlp to NameServer exists, a Common Transport (CT) command to the 7735 * NameServer shall be issued. If CT command to the NameServer fails to be 7736 * issued, the lpfc_els_flush_rscn() routine shall be invoked to clean up any 7737 * RSCN activities with the @vport. 7738 * 7739 * Return code 7740 * 0 - Cleaned up rscn on the @vport 7741 * 1 - Wait for plogi to name server before proceed 7742 **/ 7743 int 7744 lpfc_els_handle_rscn(struct lpfc_vport *vport) 7745 { 7746 struct lpfc_nodelist *ndlp; 7747 struct lpfc_hba *phba = vport->phba; 7748 7749 /* Ignore RSCN if the port is being torn down. */ 7750 if (vport->load_flag & FC_UNLOADING) { 7751 lpfc_els_flush_rscn(vport); 7752 return 0; 7753 } 7754 7755 /* Start timer for RSCN processing */ 7756 lpfc_set_disctmo(vport); 7757 7758 /* RSCN processed */ 7759 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, 7760 "0215 RSCN processed Data: x%x x%x x%x x%x x%x x%x\n", 7761 vport->fc_flag, 0, vport->fc_rscn_id_cnt, 7762 vport->port_state, vport->num_disc_nodes, 7763 vport->gidft_inp); 7764 7765 /* To process RSCN, first compare RSCN data with NameServer */ 7766 vport->fc_ns_retry = 0; 7767 vport->num_disc_nodes = 0; 7768 7769 ndlp = lpfc_findnode_did(vport, NameServer_DID); 7770 if (ndlp && ndlp->nlp_state == NLP_STE_UNMAPPED_NODE) { 7771 /* Good ndlp, issue CT Request to NameServer. Need to 7772 * know how many gidfts were issued. If none, then just 7773 * flush the RSCN. Otherwise, the outstanding requests 7774 * need to complete. 7775 */ 7776 if (phba->cfg_ns_query == LPFC_NS_QUERY_GID_FT) { 7777 if (lpfc_issue_gidft(vport) > 0) 7778 return 1; 7779 } else if (phba->cfg_ns_query == LPFC_NS_QUERY_GID_PT) { 7780 if (lpfc_issue_gidpt(vport) > 0) 7781 return 1; 7782 } else { 7783 return 1; 7784 } 7785 } else { 7786 /* Nameserver login in question. Revalidate. */ 7787 if (ndlp) { 7788 ndlp->nlp_prev_state = NLP_STE_UNUSED_NODE; 7789 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE); 7790 } else { 7791 ndlp = lpfc_nlp_init(vport, NameServer_DID); 7792 if (!ndlp) { 7793 lpfc_els_flush_rscn(vport); 7794 return 0; 7795 } 7796 ndlp->nlp_prev_state = ndlp->nlp_state; 7797 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE); 7798 } 7799 ndlp->nlp_type |= NLP_FABRIC; 7800 lpfc_issue_els_plogi(vport, NameServer_DID, 0); 7801 /* Wait for NameServer login cmpl before we can 7802 * continue 7803 */ 7804 return 1; 7805 } 7806 7807 lpfc_els_flush_rscn(vport); 7808 return 0; 7809 } 7810 7811 /** 7812 * lpfc_els_rcv_flogi - Process an unsolicited flogi iocb 7813 * @vport: pointer to a host virtual N_Port data structure. 7814 * @cmdiocb: pointer to lpfc command iocb data structure. 7815 * @ndlp: pointer to a node-list data structure. 7816 * 7817 * This routine processes Fabric Login (FLOGI) IOCB received as an ELS 7818 * unsolicited event. An unsolicited FLOGI can be received in a point-to- 7819 * point topology. As an unsolicited FLOGI should not be received in a loop 7820 * mode, any unsolicited FLOGI received in loop mode shall be ignored. The 7821 * lpfc_check_sparm() routine is invoked to check the parameters in the 7822 * unsolicited FLOGI. If parameters validation failed, the routine 7823 * lpfc_els_rsp_reject() shall be called with reject reason code set to 7824 * LSEXP_SPARM_OPTIONS to reject the FLOGI. Otherwise, the Port WWN in the 7825 * FLOGI shall be compared with the Port WWN of the @vport to determine who 7826 * will initiate PLOGI. The higher lexicographical value party shall has 7827 * higher priority (as the winning port) and will initiate PLOGI and 7828 * communicate Port_IDs (Addresses) for both nodes in PLOGI. The result 7829 * of this will be marked in the @vport fc_flag field with FC_PT2PT_PLOGI 7830 * and then the lpfc_els_rsp_acc() routine is invoked to accept the FLOGI. 7831 * 7832 * Return code 7833 * 0 - Successfully processed the unsolicited flogi 7834 * 1 - Failed to process the unsolicited flogi 7835 **/ 7836 static int 7837 lpfc_els_rcv_flogi(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb, 7838 struct lpfc_nodelist *ndlp) 7839 { 7840 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 7841 struct lpfc_hba *phba = vport->phba; 7842 struct lpfc_dmabuf *pcmd = (struct lpfc_dmabuf *) cmdiocb->context2; 7843 uint32_t *lp = (uint32_t *) pcmd->virt; 7844 IOCB_t *icmd = &cmdiocb->iocb; 7845 struct serv_parm *sp; 7846 LPFC_MBOXQ_t *mbox; 7847 uint32_t cmd, did; 7848 int rc; 7849 uint32_t fc_flag = 0; 7850 uint32_t port_state = 0; 7851 7852 cmd = *lp++; 7853 sp = (struct serv_parm *) lp; 7854 7855 /* FLOGI received */ 7856 7857 lpfc_set_disctmo(vport); 7858 7859 if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) { 7860 /* We should never receive a FLOGI in loop mode, ignore it */ 7861 did = icmd->un.elsreq64.remoteID; 7862 7863 /* An FLOGI ELS command <elsCmd> was received from DID <did> in 7864 Loop Mode */ 7865 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 7866 "0113 An FLOGI ELS command x%x was " 7867 "received from DID x%x in Loop Mode\n", 7868 cmd, did); 7869 return 1; 7870 } 7871 7872 (void) lpfc_check_sparm(vport, ndlp, sp, CLASS3, 1); 7873 7874 /* 7875 * If our portname is greater than the remote portname, 7876 * then we initiate Nport login. 7877 */ 7878 7879 rc = memcmp(&vport->fc_portname, &sp->portName, 7880 sizeof(struct lpfc_name)); 7881 7882 if (!rc) { 7883 if (phba->sli_rev < LPFC_SLI_REV4) { 7884 mbox = mempool_alloc(phba->mbox_mem_pool, 7885 GFP_KERNEL); 7886 if (!mbox) 7887 return 1; 7888 lpfc_linkdown(phba); 7889 lpfc_init_link(phba, mbox, 7890 phba->cfg_topology, 7891 phba->cfg_link_speed); 7892 mbox->u.mb.un.varInitLnk.lipsr_AL_PA = 0; 7893 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl; 7894 mbox->vport = vport; 7895 rc = lpfc_sli_issue_mbox(phba, mbox, 7896 MBX_NOWAIT); 7897 lpfc_set_loopback_flag(phba); 7898 if (rc == MBX_NOT_FINISHED) 7899 mempool_free(mbox, phba->mbox_mem_pool); 7900 return 1; 7901 } 7902 7903 /* abort the flogi coming back to ourselves 7904 * due to external loopback on the port. 7905 */ 7906 lpfc_els_abort_flogi(phba); 7907 return 0; 7908 7909 } else if (rc > 0) { /* greater than */ 7910 spin_lock_irq(shost->host_lock); 7911 vport->fc_flag |= FC_PT2PT_PLOGI; 7912 spin_unlock_irq(shost->host_lock); 7913 7914 /* If we have the high WWPN we can assign our own 7915 * myDID; otherwise, we have to WAIT for a PLOGI 7916 * from the remote NPort to find out what it 7917 * will be. 7918 */ 7919 vport->fc_myDID = PT2PT_LocalID; 7920 } else { 7921 vport->fc_myDID = PT2PT_RemoteID; 7922 } 7923 7924 /* 7925 * The vport state should go to LPFC_FLOGI only 7926 * AFTER we issue a FLOGI, not receive one. 7927 */ 7928 spin_lock_irq(shost->host_lock); 7929 fc_flag = vport->fc_flag; 7930 port_state = vport->port_state; 7931 vport->fc_flag |= FC_PT2PT; 7932 vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP); 7933 7934 /* Acking an unsol FLOGI. Count 1 for link bounce 7935 * work-around. 7936 */ 7937 vport->rcv_flogi_cnt++; 7938 spin_unlock_irq(shost->host_lock); 7939 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, 7940 "3311 Rcv Flogi PS x%x new PS x%x " 7941 "fc_flag x%x new fc_flag x%x\n", 7942 port_state, vport->port_state, 7943 fc_flag, vport->fc_flag); 7944 7945 /* 7946 * We temporarily set fc_myDID to make it look like we are 7947 * a Fabric. This is done just so we end up with the right 7948 * did / sid on the FLOGI ACC rsp. 7949 */ 7950 did = vport->fc_myDID; 7951 vport->fc_myDID = Fabric_DID; 7952 7953 memcpy(&phba->fc_fabparam, sp, sizeof(struct serv_parm)); 7954 7955 /* Defer ACC response until AFTER we issue a FLOGI */ 7956 if (!(phba->hba_flag & HBA_FLOGI_ISSUED)) { 7957 phba->defer_flogi_acc_rx_id = cmdiocb->iocb.ulpContext; 7958 phba->defer_flogi_acc_ox_id = 7959 cmdiocb->iocb.unsli3.rcvsli3.ox_id; 7960 7961 vport->fc_myDID = did; 7962 7963 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, 7964 "3344 Deferring FLOGI ACC: rx_id: x%x," 7965 " ox_id: x%x, hba_flag x%x\n", 7966 phba->defer_flogi_acc_rx_id, 7967 phba->defer_flogi_acc_ox_id, phba->hba_flag); 7968 7969 phba->defer_flogi_acc_flag = true; 7970 7971 return 0; 7972 } 7973 7974 /* Send back ACC */ 7975 lpfc_els_rsp_acc(vport, ELS_CMD_FLOGI, cmdiocb, ndlp, NULL); 7976 7977 /* Now lets put fc_myDID back to what its supposed to be */ 7978 vport->fc_myDID = did; 7979 7980 return 0; 7981 } 7982 7983 /** 7984 * lpfc_els_rcv_rnid - Process an unsolicited rnid iocb 7985 * @vport: pointer to a host virtual N_Port data structure. 7986 * @cmdiocb: pointer to lpfc command iocb data structure. 7987 * @ndlp: pointer to a node-list data structure. 7988 * 7989 * This routine processes Request Node Identification Data (RNID) IOCB 7990 * received as an ELS unsolicited event. Only when the RNID specified format 7991 * 0x0 or 0xDF (Topology Discovery Specific Node Identification Data) 7992 * present, this routine will invoke the lpfc_els_rsp_rnid_acc() routine to 7993 * Accept (ACC) the RNID ELS command. All the other RNID formats are 7994 * rejected by invoking the lpfc_els_rsp_reject() routine. 7995 * 7996 * Return code 7997 * 0 - Successfully processed rnid iocb (currently always return 0) 7998 **/ 7999 static int 8000 lpfc_els_rcv_rnid(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb, 8001 struct lpfc_nodelist *ndlp) 8002 { 8003 struct lpfc_dmabuf *pcmd; 8004 uint32_t *lp; 8005 RNID *rn; 8006 struct ls_rjt stat; 8007 8008 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2; 8009 lp = (uint32_t *) pcmd->virt; 8010 8011 lp++; 8012 rn = (RNID *) lp; 8013 8014 /* RNID received */ 8015 8016 switch (rn->Format) { 8017 case 0: 8018 case RNID_TOPOLOGY_DISC: 8019 /* Send back ACC */ 8020 lpfc_els_rsp_rnid_acc(vport, rn->Format, cmdiocb, ndlp); 8021 break; 8022 default: 8023 /* Reject this request because format not supported */ 8024 stat.un.b.lsRjtRsvd0 = 0; 8025 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC; 8026 stat.un.b.lsRjtRsnCodeExp = LSEXP_CANT_GIVE_DATA; 8027 stat.un.b.vendorUnique = 0; 8028 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, 8029 NULL); 8030 } 8031 return 0; 8032 } 8033 8034 /** 8035 * lpfc_els_rcv_echo - Process an unsolicited echo iocb 8036 * @vport: pointer to a host virtual N_Port data structure. 8037 * @cmdiocb: pointer to lpfc command iocb data structure. 8038 * @ndlp: pointer to a node-list data structure. 8039 * 8040 * Return code 8041 * 0 - Successfully processed echo iocb (currently always return 0) 8042 **/ 8043 static int 8044 lpfc_els_rcv_echo(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb, 8045 struct lpfc_nodelist *ndlp) 8046 { 8047 uint8_t *pcmd; 8048 8049 pcmd = (uint8_t *) (((struct lpfc_dmabuf *) cmdiocb->context2)->virt); 8050 8051 /* skip over first word of echo command to find echo data */ 8052 pcmd += sizeof(uint32_t); 8053 8054 lpfc_els_rsp_echo_acc(vport, pcmd, cmdiocb, ndlp); 8055 return 0; 8056 } 8057 8058 /** 8059 * lpfc_els_rcv_lirr - Process an unsolicited lirr iocb 8060 * @vport: pointer to a host virtual N_Port data structure. 8061 * @cmdiocb: pointer to lpfc command iocb data structure. 8062 * @ndlp: pointer to a node-list data structure. 8063 * 8064 * This routine processes a Link Incident Report Registration(LIRR) IOCB 8065 * received as an ELS unsolicited event. Currently, this function just invokes 8066 * the lpfc_els_rsp_reject() routine to reject the LIRR IOCB unconditionally. 8067 * 8068 * Return code 8069 * 0 - Successfully processed lirr iocb (currently always return 0) 8070 **/ 8071 static int 8072 lpfc_els_rcv_lirr(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb, 8073 struct lpfc_nodelist *ndlp) 8074 { 8075 struct ls_rjt stat; 8076 8077 /* For now, unconditionally reject this command */ 8078 stat.un.b.lsRjtRsvd0 = 0; 8079 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC; 8080 stat.un.b.lsRjtRsnCodeExp = LSEXP_CANT_GIVE_DATA; 8081 stat.un.b.vendorUnique = 0; 8082 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL); 8083 return 0; 8084 } 8085 8086 /** 8087 * lpfc_els_rcv_rrq - Process an unsolicited rrq iocb 8088 * @vport: pointer to a host virtual N_Port data structure. 8089 * @cmdiocb: pointer to lpfc command iocb data structure. 8090 * @ndlp: pointer to a node-list data structure. 8091 * 8092 * This routine processes a Reinstate Recovery Qualifier (RRQ) IOCB 8093 * received as an ELS unsolicited event. A request to RRQ shall only 8094 * be accepted if the Originator Nx_Port N_Port_ID or the Responder 8095 * Nx_Port N_Port_ID of the target Exchange is the same as the 8096 * N_Port_ID of the Nx_Port that makes the request. If the RRQ is 8097 * not accepted, an LS_RJT with reason code "Unable to perform 8098 * command request" and reason code explanation "Invalid Originator 8099 * S_ID" shall be returned. For now, we just unconditionally accept 8100 * RRQ from the target. 8101 **/ 8102 static void 8103 lpfc_els_rcv_rrq(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb, 8104 struct lpfc_nodelist *ndlp) 8105 { 8106 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL); 8107 if (vport->phba->sli_rev == LPFC_SLI_REV4) 8108 lpfc_els_clear_rrq(vport, cmdiocb, ndlp); 8109 } 8110 8111 /** 8112 * lpfc_els_rsp_rls_acc - Completion callbk func for MBX_READ_LNK_STAT mbox cmd 8113 * @phba: pointer to lpfc hba data structure. 8114 * @pmb: pointer to the driver internal queue element for mailbox command. 8115 * 8116 * This routine is the completion callback function for the MBX_READ_LNK_STAT 8117 * mailbox command. This callback function is to actually send the Accept 8118 * (ACC) response to a Read Link Status (RLS) unsolicited IOCB event. It 8119 * collects the link statistics from the completion of the MBX_READ_LNK_STAT 8120 * mailbox command, constructs the RLS response with the link statistics 8121 * collected, and then invokes the lpfc_sli_issue_iocb() routine to send ACC 8122 * response to the RLS. 8123 * 8124 * Note that the ndlp reference count will be incremented by 1 for holding the 8125 * ndlp and the reference to ndlp will be stored into the context1 field of 8126 * the IOCB for the completion callback function to the RLS Accept Response 8127 * ELS IOCB command. 8128 * 8129 **/ 8130 static void 8131 lpfc_els_rsp_rls_acc(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 8132 { 8133 int rc = 0; 8134 MAILBOX_t *mb; 8135 IOCB_t *icmd; 8136 struct RLS_RSP *rls_rsp; 8137 uint8_t *pcmd; 8138 struct lpfc_iocbq *elsiocb; 8139 struct lpfc_nodelist *ndlp; 8140 uint16_t oxid; 8141 uint16_t rxid; 8142 uint32_t cmdsize; 8143 8144 mb = &pmb->u.mb; 8145 8146 ndlp = (struct lpfc_nodelist *)pmb->ctx_ndlp; 8147 rxid = (uint16_t)((unsigned long)(pmb->ctx_buf) & 0xffff); 8148 oxid = (uint16_t)(((unsigned long)(pmb->ctx_buf) >> 16) & 0xffff); 8149 pmb->ctx_buf = NULL; 8150 pmb->ctx_ndlp = NULL; 8151 8152 if (mb->mbxStatus) { 8153 mempool_free(pmb, phba->mbox_mem_pool); 8154 return; 8155 } 8156 8157 cmdsize = sizeof(struct RLS_RSP) + sizeof(uint32_t); 8158 elsiocb = lpfc_prep_els_iocb(phba->pport, 0, cmdsize, 8159 lpfc_max_els_tries, ndlp, 8160 ndlp->nlp_DID, ELS_CMD_ACC); 8161 8162 /* Decrement the ndlp reference count from previous mbox command */ 8163 lpfc_nlp_put(ndlp); 8164 8165 if (!elsiocb) { 8166 mempool_free(pmb, phba->mbox_mem_pool); 8167 return; 8168 } 8169 8170 icmd = &elsiocb->iocb; 8171 icmd->ulpContext = rxid; 8172 icmd->unsli3.rcvsli3.ox_id = oxid; 8173 8174 pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt); 8175 *((uint32_t *) (pcmd)) = ELS_CMD_ACC; 8176 pcmd += sizeof(uint32_t); /* Skip past command */ 8177 rls_rsp = (struct RLS_RSP *)pcmd; 8178 8179 rls_rsp->linkFailureCnt = cpu_to_be32(mb->un.varRdLnk.linkFailureCnt); 8180 rls_rsp->lossSyncCnt = cpu_to_be32(mb->un.varRdLnk.lossSyncCnt); 8181 rls_rsp->lossSignalCnt = cpu_to_be32(mb->un.varRdLnk.lossSignalCnt); 8182 rls_rsp->primSeqErrCnt = cpu_to_be32(mb->un.varRdLnk.primSeqErrCnt); 8183 rls_rsp->invalidXmitWord = cpu_to_be32(mb->un.varRdLnk.invalidXmitWord); 8184 rls_rsp->crcCnt = cpu_to_be32(mb->un.varRdLnk.crcCnt); 8185 mempool_free(pmb, phba->mbox_mem_pool); 8186 /* Xmit ELS RLS ACC response tag <ulpIoTag> */ 8187 lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_ELS, 8188 "2874 Xmit ELS RLS ACC response tag x%x xri x%x, " 8189 "did x%x, nlp_flag x%x, nlp_state x%x, rpi x%x\n", 8190 elsiocb->iotag, elsiocb->iocb.ulpContext, 8191 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state, 8192 ndlp->nlp_rpi); 8193 elsiocb->iocb_cmpl = lpfc_cmpl_els_rsp; 8194 phba->fc_stat.elsXmitACC++; 8195 elsiocb->context1 = lpfc_nlp_get(ndlp); 8196 if (!elsiocb->context1) { 8197 lpfc_els_free_iocb(phba, elsiocb); 8198 return; 8199 } 8200 8201 rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0); 8202 if (rc == IOCB_ERROR) { 8203 lpfc_els_free_iocb(phba, elsiocb); 8204 lpfc_nlp_put(ndlp); 8205 } 8206 return; 8207 } 8208 8209 /** 8210 * lpfc_els_rcv_rls - Process an unsolicited rls iocb 8211 * @vport: pointer to a host virtual N_Port data structure. 8212 * @cmdiocb: pointer to lpfc command iocb data structure. 8213 * @ndlp: pointer to a node-list data structure. 8214 * 8215 * This routine processes Read Link Status (RLS) IOCB received as an 8216 * ELS unsolicited event. It first checks the remote port state. If the 8217 * remote port is not in NLP_STE_UNMAPPED_NODE state or NLP_STE_MAPPED_NODE 8218 * state, it invokes the lpfc_els_rsl_reject() routine to send the reject 8219 * response. Otherwise, it issue the MBX_READ_LNK_STAT mailbox command 8220 * for reading the HBA link statistics. It is for the callback function, 8221 * lpfc_els_rsp_rls_acc(), set to the MBX_READ_LNK_STAT mailbox command 8222 * to actually sending out RPL Accept (ACC) response. 8223 * 8224 * Return codes 8225 * 0 - Successfully processed rls iocb (currently always return 0) 8226 **/ 8227 static int 8228 lpfc_els_rcv_rls(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb, 8229 struct lpfc_nodelist *ndlp) 8230 { 8231 struct lpfc_hba *phba = vport->phba; 8232 LPFC_MBOXQ_t *mbox; 8233 struct ls_rjt stat; 8234 8235 if ((ndlp->nlp_state != NLP_STE_UNMAPPED_NODE) && 8236 (ndlp->nlp_state != NLP_STE_MAPPED_NODE)) 8237 /* reject the unsolicited RLS request and done with it */ 8238 goto reject_out; 8239 8240 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_ATOMIC); 8241 if (mbox) { 8242 lpfc_read_lnk_stat(phba, mbox); 8243 mbox->ctx_buf = (void *)((unsigned long) 8244 ((cmdiocb->iocb.unsli3.rcvsli3.ox_id << 16) | 8245 cmdiocb->iocb.ulpContext)); /* rx_id */ 8246 mbox->ctx_ndlp = lpfc_nlp_get(ndlp); 8247 if (!mbox->ctx_ndlp) 8248 goto node_err; 8249 mbox->vport = vport; 8250 mbox->mbox_cmpl = lpfc_els_rsp_rls_acc; 8251 if (lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT) 8252 != MBX_NOT_FINISHED) 8253 /* Mbox completion will send ELS Response */ 8254 return 0; 8255 /* Decrement reference count used for the failed mbox 8256 * command. 8257 */ 8258 lpfc_nlp_put(ndlp); 8259 node_err: 8260 mempool_free(mbox, phba->mbox_mem_pool); 8261 } 8262 reject_out: 8263 /* issue rejection response */ 8264 stat.un.b.lsRjtRsvd0 = 0; 8265 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC; 8266 stat.un.b.lsRjtRsnCodeExp = LSEXP_CANT_GIVE_DATA; 8267 stat.un.b.vendorUnique = 0; 8268 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL); 8269 return 0; 8270 } 8271 8272 /** 8273 * lpfc_els_rcv_rtv - Process an unsolicited rtv iocb 8274 * @vport: pointer to a host virtual N_Port data structure. 8275 * @cmdiocb: pointer to lpfc command iocb data structure. 8276 * @ndlp: pointer to a node-list data structure. 8277 * 8278 * This routine processes Read Timout Value (RTV) IOCB received as an 8279 * ELS unsolicited event. It first checks the remote port state. If the 8280 * remote port is not in NLP_STE_UNMAPPED_NODE state or NLP_STE_MAPPED_NODE 8281 * state, it invokes the lpfc_els_rsl_reject() routine to send the reject 8282 * response. Otherwise, it sends the Accept(ACC) response to a Read Timeout 8283 * Value (RTV) unsolicited IOCB event. 8284 * 8285 * Note that the ndlp reference count will be incremented by 1 for holding the 8286 * ndlp and the reference to ndlp will be stored into the context1 field of 8287 * the IOCB for the completion callback function to the RTV Accept Response 8288 * ELS IOCB command. 8289 * 8290 * Return codes 8291 * 0 - Successfully processed rtv iocb (currently always return 0) 8292 **/ 8293 static int 8294 lpfc_els_rcv_rtv(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb, 8295 struct lpfc_nodelist *ndlp) 8296 { 8297 int rc = 0; 8298 struct lpfc_hba *phba = vport->phba; 8299 struct ls_rjt stat; 8300 struct RTV_RSP *rtv_rsp; 8301 uint8_t *pcmd; 8302 struct lpfc_iocbq *elsiocb; 8303 uint32_t cmdsize; 8304 8305 8306 if ((ndlp->nlp_state != NLP_STE_UNMAPPED_NODE) && 8307 (ndlp->nlp_state != NLP_STE_MAPPED_NODE)) 8308 /* reject the unsolicited RTV request and done with it */ 8309 goto reject_out; 8310 8311 cmdsize = sizeof(struct RTV_RSP) + sizeof(uint32_t); 8312 elsiocb = lpfc_prep_els_iocb(phba->pport, 0, cmdsize, 8313 lpfc_max_els_tries, ndlp, 8314 ndlp->nlp_DID, ELS_CMD_ACC); 8315 8316 if (!elsiocb) 8317 return 1; 8318 8319 pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt); 8320 *((uint32_t *) (pcmd)) = ELS_CMD_ACC; 8321 pcmd += sizeof(uint32_t); /* Skip past command */ 8322 8323 /* use the command's xri in the response */ 8324 elsiocb->iocb.ulpContext = cmdiocb->iocb.ulpContext; /* Xri / rx_id */ 8325 elsiocb->iocb.unsli3.rcvsli3.ox_id = cmdiocb->iocb.unsli3.rcvsli3.ox_id; 8326 8327 rtv_rsp = (struct RTV_RSP *)pcmd; 8328 8329 /* populate RTV payload */ 8330 rtv_rsp->ratov = cpu_to_be32(phba->fc_ratov * 1000); /* report msecs */ 8331 rtv_rsp->edtov = cpu_to_be32(phba->fc_edtov); 8332 bf_set(qtov_edtovres, rtv_rsp, phba->fc_edtovResol ? 1 : 0); 8333 bf_set(qtov_rttov, rtv_rsp, 0); /* Field is for FC ONLY */ 8334 rtv_rsp->qtov = cpu_to_be32(rtv_rsp->qtov); 8335 8336 /* Xmit ELS RLS ACC response tag <ulpIoTag> */ 8337 lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_ELS, 8338 "2875 Xmit ELS RTV ACC response tag x%x xri x%x, " 8339 "did x%x, nlp_flag x%x, nlp_state x%x, rpi x%x, " 8340 "Data: x%x x%x x%x\n", 8341 elsiocb->iotag, elsiocb->iocb.ulpContext, 8342 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state, 8343 ndlp->nlp_rpi, 8344 rtv_rsp->ratov, rtv_rsp->edtov, rtv_rsp->qtov); 8345 elsiocb->iocb_cmpl = lpfc_cmpl_els_rsp; 8346 phba->fc_stat.elsXmitACC++; 8347 elsiocb->context1 = lpfc_nlp_get(ndlp); 8348 if (!elsiocb->context1) { 8349 lpfc_els_free_iocb(phba, elsiocb); 8350 return 0; 8351 } 8352 8353 rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0); 8354 if (rc == IOCB_ERROR) { 8355 lpfc_els_free_iocb(phba, elsiocb); 8356 lpfc_nlp_put(ndlp); 8357 } 8358 return 0; 8359 8360 reject_out: 8361 /* issue rejection response */ 8362 stat.un.b.lsRjtRsvd0 = 0; 8363 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC; 8364 stat.un.b.lsRjtRsnCodeExp = LSEXP_CANT_GIVE_DATA; 8365 stat.un.b.vendorUnique = 0; 8366 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL); 8367 return 0; 8368 } 8369 8370 /* lpfc_issue_els_rrq - Process an unsolicited rrq iocb 8371 * @vport: pointer to a host virtual N_Port data structure. 8372 * @ndlp: pointer to a node-list data structure. 8373 * @did: DID of the target. 8374 * @rrq: Pointer to the rrq struct. 8375 * 8376 * Build a ELS RRQ command and send it to the target. If the issue_iocb is 8377 * Successful the the completion handler will clear the RRQ. 8378 * 8379 * Return codes 8380 * 0 - Successfully sent rrq els iocb. 8381 * 1 - Failed to send rrq els iocb. 8382 **/ 8383 static int 8384 lpfc_issue_els_rrq(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 8385 uint32_t did, struct lpfc_node_rrq *rrq) 8386 { 8387 struct lpfc_hba *phba = vport->phba; 8388 struct RRQ *els_rrq; 8389 struct lpfc_iocbq *elsiocb; 8390 uint8_t *pcmd; 8391 uint16_t cmdsize; 8392 int ret; 8393 8394 if (!ndlp) 8395 return 1; 8396 8397 /* If ndlp is not NULL, we will bump the reference count on it */ 8398 cmdsize = (sizeof(uint32_t) + sizeof(struct RRQ)); 8399 elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, 0, ndlp, did, 8400 ELS_CMD_RRQ); 8401 if (!elsiocb) 8402 return 1; 8403 8404 pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt); 8405 8406 /* For RRQ request, remainder of payload is Exchange IDs */ 8407 *((uint32_t *) (pcmd)) = ELS_CMD_RRQ; 8408 pcmd += sizeof(uint32_t); 8409 els_rrq = (struct RRQ *) pcmd; 8410 8411 bf_set(rrq_oxid, els_rrq, phba->sli4_hba.xri_ids[rrq->xritag]); 8412 bf_set(rrq_rxid, els_rrq, rrq->rxid); 8413 bf_set(rrq_did, els_rrq, vport->fc_myDID); 8414 els_rrq->rrq = cpu_to_be32(els_rrq->rrq); 8415 els_rrq->rrq_exchg = cpu_to_be32(els_rrq->rrq_exchg); 8416 8417 8418 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, 8419 "Issue RRQ: did:x%x", 8420 did, rrq->xritag, rrq->rxid); 8421 elsiocb->context_un.rrq = rrq; 8422 elsiocb->iocb_cmpl = lpfc_cmpl_els_rrq; 8423 8424 lpfc_nlp_get(ndlp); 8425 elsiocb->context1 = ndlp; 8426 8427 ret = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0); 8428 if (ret == IOCB_ERROR) 8429 goto io_err; 8430 return 0; 8431 8432 io_err: 8433 lpfc_els_free_iocb(phba, elsiocb); 8434 lpfc_nlp_put(ndlp); 8435 return 1; 8436 } 8437 8438 /** 8439 * lpfc_send_rrq - Sends ELS RRQ if needed. 8440 * @phba: pointer to lpfc hba data structure. 8441 * @rrq: pointer to the active rrq. 8442 * 8443 * This routine will call the lpfc_issue_els_rrq if the rrq is 8444 * still active for the xri. If this function returns a failure then 8445 * the caller needs to clean up the RRQ by calling lpfc_clr_active_rrq. 8446 * 8447 * Returns 0 Success. 8448 * 1 Failure. 8449 **/ 8450 int 8451 lpfc_send_rrq(struct lpfc_hba *phba, struct lpfc_node_rrq *rrq) 8452 { 8453 struct lpfc_nodelist *ndlp = lpfc_findnode_did(rrq->vport, 8454 rrq->nlp_DID); 8455 if (!ndlp) 8456 return 1; 8457 8458 if (lpfc_test_rrq_active(phba, ndlp, rrq->xritag)) 8459 return lpfc_issue_els_rrq(rrq->vport, ndlp, 8460 rrq->nlp_DID, rrq); 8461 else 8462 return 1; 8463 } 8464 8465 /** 8466 * lpfc_els_rsp_rpl_acc - Issue an accept rpl els command 8467 * @vport: pointer to a host virtual N_Port data structure. 8468 * @cmdsize: size of the ELS command. 8469 * @oldiocb: pointer to the original lpfc command iocb data structure. 8470 * @ndlp: pointer to a node-list data structure. 8471 * 8472 * This routine issuees an Accept (ACC) Read Port List (RPL) ELS command. 8473 * It is to be called by the lpfc_els_rcv_rpl() routine to accept the RPL. 8474 * 8475 * Note that the ndlp reference count will be incremented by 1 for holding the 8476 * ndlp and the reference to ndlp will be stored into the context1 field of 8477 * the IOCB for the completion callback function to the RPL Accept Response 8478 * ELS command. 8479 * 8480 * Return code 8481 * 0 - Successfully issued ACC RPL ELS command 8482 * 1 - Failed to issue ACC RPL ELS command 8483 **/ 8484 static int 8485 lpfc_els_rsp_rpl_acc(struct lpfc_vport *vport, uint16_t cmdsize, 8486 struct lpfc_iocbq *oldiocb, struct lpfc_nodelist *ndlp) 8487 { 8488 int rc = 0; 8489 struct lpfc_hba *phba = vport->phba; 8490 IOCB_t *icmd, *oldcmd; 8491 RPL_RSP rpl_rsp; 8492 struct lpfc_iocbq *elsiocb; 8493 uint8_t *pcmd; 8494 8495 elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry, ndlp, 8496 ndlp->nlp_DID, ELS_CMD_ACC); 8497 8498 if (!elsiocb) 8499 return 1; 8500 8501 icmd = &elsiocb->iocb; 8502 oldcmd = &oldiocb->iocb; 8503 icmd->ulpContext = oldcmd->ulpContext; /* Xri / rx_id */ 8504 icmd->unsli3.rcvsli3.ox_id = oldcmd->unsli3.rcvsli3.ox_id; 8505 8506 pcmd = (((struct lpfc_dmabuf *) elsiocb->context2)->virt); 8507 *((uint32_t *) (pcmd)) = ELS_CMD_ACC; 8508 pcmd += sizeof(uint16_t); 8509 *((uint16_t *)(pcmd)) = be16_to_cpu(cmdsize); 8510 pcmd += sizeof(uint16_t); 8511 8512 /* Setup the RPL ACC payload */ 8513 rpl_rsp.listLen = be32_to_cpu(1); 8514 rpl_rsp.index = 0; 8515 rpl_rsp.port_num_blk.portNum = 0; 8516 rpl_rsp.port_num_blk.portID = be32_to_cpu(vport->fc_myDID); 8517 memcpy(&rpl_rsp.port_num_blk.portName, &vport->fc_portname, 8518 sizeof(struct lpfc_name)); 8519 memcpy(pcmd, &rpl_rsp, cmdsize - sizeof(uint32_t)); 8520 /* Xmit ELS RPL ACC response tag <ulpIoTag> */ 8521 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, 8522 "0120 Xmit ELS RPL ACC response tag x%x " 8523 "xri x%x, did x%x, nlp_flag x%x, nlp_state x%x, " 8524 "rpi x%x\n", 8525 elsiocb->iotag, elsiocb->iocb.ulpContext, 8526 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state, 8527 ndlp->nlp_rpi); 8528 elsiocb->iocb_cmpl = lpfc_cmpl_els_rsp; 8529 phba->fc_stat.elsXmitACC++; 8530 elsiocb->context1 = lpfc_nlp_get(ndlp); 8531 if (!elsiocb->context1) { 8532 lpfc_els_free_iocb(phba, elsiocb); 8533 return 1; 8534 } 8535 8536 rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0); 8537 if (rc == IOCB_ERROR) { 8538 lpfc_els_free_iocb(phba, elsiocb); 8539 lpfc_nlp_put(ndlp); 8540 return 1; 8541 } 8542 8543 return 0; 8544 } 8545 8546 /** 8547 * lpfc_els_rcv_rpl - Process an unsolicited rpl iocb 8548 * @vport: pointer to a host virtual N_Port data structure. 8549 * @cmdiocb: pointer to lpfc command iocb data structure. 8550 * @ndlp: pointer to a node-list data structure. 8551 * 8552 * This routine processes Read Port List (RPL) IOCB received as an ELS 8553 * unsolicited event. It first checks the remote port state. If the remote 8554 * port is not in NLP_STE_UNMAPPED_NODE and NLP_STE_MAPPED_NODE states, it 8555 * invokes the lpfc_els_rsp_reject() routine to send reject response. 8556 * Otherwise, this routine then invokes the lpfc_els_rsp_rpl_acc() routine 8557 * to accept the RPL. 8558 * 8559 * Return code 8560 * 0 - Successfully processed rpl iocb (currently always return 0) 8561 **/ 8562 static int 8563 lpfc_els_rcv_rpl(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb, 8564 struct lpfc_nodelist *ndlp) 8565 { 8566 struct lpfc_dmabuf *pcmd; 8567 uint32_t *lp; 8568 uint32_t maxsize; 8569 uint16_t cmdsize; 8570 RPL *rpl; 8571 struct ls_rjt stat; 8572 8573 if ((ndlp->nlp_state != NLP_STE_UNMAPPED_NODE) && 8574 (ndlp->nlp_state != NLP_STE_MAPPED_NODE)) { 8575 /* issue rejection response */ 8576 stat.un.b.lsRjtRsvd0 = 0; 8577 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC; 8578 stat.un.b.lsRjtRsnCodeExp = LSEXP_CANT_GIVE_DATA; 8579 stat.un.b.vendorUnique = 0; 8580 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, 8581 NULL); 8582 /* rejected the unsolicited RPL request and done with it */ 8583 return 0; 8584 } 8585 8586 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2; 8587 lp = (uint32_t *) pcmd->virt; 8588 rpl = (RPL *) (lp + 1); 8589 maxsize = be32_to_cpu(rpl->maxsize); 8590 8591 /* We support only one port */ 8592 if ((rpl->index == 0) && 8593 ((maxsize == 0) || 8594 ((maxsize * sizeof(uint32_t)) >= sizeof(RPL_RSP)))) { 8595 cmdsize = sizeof(uint32_t) + sizeof(RPL_RSP); 8596 } else { 8597 cmdsize = sizeof(uint32_t) + maxsize * sizeof(uint32_t); 8598 } 8599 lpfc_els_rsp_rpl_acc(vport, cmdsize, cmdiocb, ndlp); 8600 8601 return 0; 8602 } 8603 8604 /** 8605 * lpfc_els_rcv_farp - Process an unsolicited farp request els command 8606 * @vport: pointer to a virtual N_Port data structure. 8607 * @cmdiocb: pointer to lpfc command iocb data structure. 8608 * @ndlp: pointer to a node-list data structure. 8609 * 8610 * This routine processes Fibre Channel Address Resolution Protocol 8611 * (FARP) Request IOCB received as an ELS unsolicited event. Currently, 8612 * the lpfc driver only supports matching on WWPN or WWNN for FARP. As such, 8613 * FARP_MATCH_PORT flag and FARP_MATCH_NODE flag are checked against the 8614 * Match Flag in the FARP request IOCB: if FARP_MATCH_PORT flag is set, the 8615 * remote PortName is compared against the FC PortName stored in the @vport 8616 * data structure; if FARP_MATCH_NODE flag is set, the remote NodeName is 8617 * compared against the FC NodeName stored in the @vport data structure. 8618 * If any of these matches and the FARP_REQUEST_FARPR flag is set in the 8619 * FARP request IOCB Response Flag, the lpfc_issue_els_farpr() routine is 8620 * invoked to send out FARP Response to the remote node. Before sending the 8621 * FARP Response, however, the FARP_REQUEST_PLOGI flag is check in the FARP 8622 * request IOCB Response Flag and, if it is set, the lpfc_issue_els_plogi() 8623 * routine is invoked to log into the remote port first. 8624 * 8625 * Return code 8626 * 0 - Either the FARP Match Mode not supported or successfully processed 8627 **/ 8628 static int 8629 lpfc_els_rcv_farp(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb, 8630 struct lpfc_nodelist *ndlp) 8631 { 8632 struct lpfc_dmabuf *pcmd; 8633 uint32_t *lp; 8634 IOCB_t *icmd; 8635 FARP *fp; 8636 uint32_t cnt, did; 8637 8638 icmd = &cmdiocb->iocb; 8639 did = icmd->un.elsreq64.remoteID; 8640 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2; 8641 lp = (uint32_t *) pcmd->virt; 8642 8643 lp++; 8644 fp = (FARP *) lp; 8645 /* FARP-REQ received from DID <did> */ 8646 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, 8647 "0601 FARP-REQ received from DID x%x\n", did); 8648 /* We will only support match on WWPN or WWNN */ 8649 if (fp->Mflags & ~(FARP_MATCH_NODE | FARP_MATCH_PORT)) { 8650 return 0; 8651 } 8652 8653 cnt = 0; 8654 /* If this FARP command is searching for my portname */ 8655 if (fp->Mflags & FARP_MATCH_PORT) { 8656 if (memcmp(&fp->RportName, &vport->fc_portname, 8657 sizeof(struct lpfc_name)) == 0) 8658 cnt = 1; 8659 } 8660 8661 /* If this FARP command is searching for my nodename */ 8662 if (fp->Mflags & FARP_MATCH_NODE) { 8663 if (memcmp(&fp->RnodeName, &vport->fc_nodename, 8664 sizeof(struct lpfc_name)) == 0) 8665 cnt = 1; 8666 } 8667 8668 if (cnt) { 8669 if ((ndlp->nlp_state == NLP_STE_UNMAPPED_NODE) || 8670 (ndlp->nlp_state == NLP_STE_MAPPED_NODE)) { 8671 /* Log back into the node before sending the FARP. */ 8672 if (fp->Rflags & FARP_REQUEST_PLOGI) { 8673 ndlp->nlp_prev_state = ndlp->nlp_state; 8674 lpfc_nlp_set_state(vport, ndlp, 8675 NLP_STE_PLOGI_ISSUE); 8676 lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0); 8677 } 8678 8679 /* Send a FARP response to that node */ 8680 if (fp->Rflags & FARP_REQUEST_FARPR) 8681 lpfc_issue_els_farpr(vport, did, 0); 8682 } 8683 } 8684 return 0; 8685 } 8686 8687 /** 8688 * lpfc_els_rcv_farpr - Process an unsolicited farp response iocb 8689 * @vport: pointer to a host virtual N_Port data structure. 8690 * @cmdiocb: pointer to lpfc command iocb data structure. 8691 * @ndlp: pointer to a node-list data structure. 8692 * 8693 * This routine processes Fibre Channel Address Resolution Protocol 8694 * Response (FARPR) IOCB received as an ELS unsolicited event. It simply 8695 * invokes the lpfc_els_rsp_acc() routine to the remote node to accept 8696 * the FARP response request. 8697 * 8698 * Return code 8699 * 0 - Successfully processed FARPR IOCB (currently always return 0) 8700 **/ 8701 static int 8702 lpfc_els_rcv_farpr(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb, 8703 struct lpfc_nodelist *ndlp) 8704 { 8705 struct lpfc_dmabuf *pcmd; 8706 uint32_t *lp; 8707 IOCB_t *icmd; 8708 uint32_t did; 8709 8710 icmd = &cmdiocb->iocb; 8711 did = icmd->un.elsreq64.remoteID; 8712 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2; 8713 lp = (uint32_t *) pcmd->virt; 8714 8715 lp++; 8716 /* FARP-RSP received from DID <did> */ 8717 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, 8718 "0600 FARP-RSP received from DID x%x\n", did); 8719 /* ACCEPT the Farp resp request */ 8720 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL); 8721 8722 return 0; 8723 } 8724 8725 /** 8726 * lpfc_els_rcv_fan - Process an unsolicited fan iocb command 8727 * @vport: pointer to a host virtual N_Port data structure. 8728 * @cmdiocb: pointer to lpfc command iocb data structure. 8729 * @fan_ndlp: pointer to a node-list data structure. 8730 * 8731 * This routine processes a Fabric Address Notification (FAN) IOCB 8732 * command received as an ELS unsolicited event. The FAN ELS command will 8733 * only be processed on a physical port (i.e., the @vport represents the 8734 * physical port). The fabric NodeName and PortName from the FAN IOCB are 8735 * compared against those in the phba data structure. If any of those is 8736 * different, the lpfc_initial_flogi() routine is invoked to initialize 8737 * Fabric Login (FLOGI) to the fabric to start the discover over. Otherwise, 8738 * if both of those are identical, the lpfc_issue_fabric_reglogin() routine 8739 * is invoked to register login to the fabric. 8740 * 8741 * Return code 8742 * 0 - Successfully processed fan iocb (currently always return 0). 8743 **/ 8744 static int 8745 lpfc_els_rcv_fan(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb, 8746 struct lpfc_nodelist *fan_ndlp) 8747 { 8748 struct lpfc_hba *phba = vport->phba; 8749 uint32_t *lp; 8750 FAN *fp; 8751 8752 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, "0265 FAN received\n"); 8753 lp = (uint32_t *)((struct lpfc_dmabuf *)cmdiocb->context2)->virt; 8754 fp = (FAN *) ++lp; 8755 /* FAN received; Fan does not have a reply sequence */ 8756 if ((vport == phba->pport) && 8757 (vport->port_state == LPFC_LOCAL_CFG_LINK)) { 8758 if ((memcmp(&phba->fc_fabparam.nodeName, &fp->FnodeName, 8759 sizeof(struct lpfc_name))) || 8760 (memcmp(&phba->fc_fabparam.portName, &fp->FportName, 8761 sizeof(struct lpfc_name)))) { 8762 /* This port has switched fabrics. FLOGI is required */ 8763 lpfc_issue_init_vfi(vport); 8764 } else { 8765 /* FAN verified - skip FLOGI */ 8766 vport->fc_myDID = vport->fc_prevDID; 8767 if (phba->sli_rev < LPFC_SLI_REV4) 8768 lpfc_issue_fabric_reglogin(vport); 8769 else { 8770 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, 8771 "3138 Need register VFI: (x%x/%x)\n", 8772 vport->fc_prevDID, vport->fc_myDID); 8773 lpfc_issue_reg_vfi(vport); 8774 } 8775 } 8776 } 8777 return 0; 8778 } 8779 8780 /** 8781 * lpfc_els_rcv_edc - Process an unsolicited EDC iocb 8782 * @vport: pointer to a host virtual N_Port data structure. 8783 * @cmdiocb: pointer to lpfc command iocb data structure. 8784 * @ndlp: pointer to a node-list data structure. 8785 * 8786 * Return code 8787 * 0 - Successfully processed echo iocb (currently always return 0) 8788 **/ 8789 static int 8790 lpfc_els_rcv_edc(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb, 8791 struct lpfc_nodelist *ndlp) 8792 { 8793 struct lpfc_hba *phba = vport->phba; 8794 struct fc_els_edc *edc_req; 8795 struct fc_tlv_desc *tlv; 8796 uint8_t *payload; 8797 uint32_t *ptr, dtag; 8798 const char *dtag_nm; 8799 int desc_cnt = 0, bytes_remain; 8800 bool rcv_cap_desc = false; 8801 8802 payload = ((struct lpfc_dmabuf *)cmdiocb->context2)->virt; 8803 8804 edc_req = (struct fc_els_edc *)payload; 8805 bytes_remain = be32_to_cpu(edc_req->desc_len); 8806 8807 ptr = (uint32_t *)payload; 8808 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS | LOG_CGN_MGMT, 8809 "3319 Rcv EDC payload len %d: x%x x%x x%x\n", 8810 bytes_remain, be32_to_cpu(*ptr), 8811 be32_to_cpu(*(ptr + 1)), be32_to_cpu(*(ptr + 2))); 8812 8813 /* No signal support unless there is a congestion descriptor */ 8814 phba->cgn_reg_signal = EDC_CG_SIG_NOTSUPPORTED; 8815 phba->cgn_sig_freq = 0; 8816 phba->cgn_reg_fpin = LPFC_CGN_FPIN_ALARM | LPFC_CGN_FPIN_WARN; 8817 8818 if (bytes_remain <= 0) 8819 goto out; 8820 8821 tlv = edc_req->desc; 8822 8823 /* 8824 * cycle through EDC diagnostic descriptors to find the 8825 * congestion signaling capability descriptor 8826 */ 8827 while (bytes_remain && !rcv_cap_desc) { 8828 if (bytes_remain < FC_TLV_DESC_HDR_SZ) { 8829 lpfc_printf_log(phba, KERN_WARNING, LOG_CGN_MGMT, 8830 "6464 Truncated TLV hdr on " 8831 "Diagnostic descriptor[%d]\n", 8832 desc_cnt); 8833 goto out; 8834 } 8835 8836 dtag = be32_to_cpu(tlv->desc_tag); 8837 switch (dtag) { 8838 case ELS_DTAG_LNK_FAULT_CAP: 8839 if (bytes_remain < FC_TLV_DESC_SZ_FROM_LENGTH(tlv) || 8840 FC_TLV_DESC_SZ_FROM_LENGTH(tlv) != 8841 sizeof(struct fc_diag_lnkflt_desc)) { 8842 lpfc_printf_log( 8843 phba, KERN_WARNING, LOG_CGN_MGMT, 8844 "6465 Truncated Link Fault Diagnostic " 8845 "descriptor[%d]: %d vs 0x%zx 0x%zx\n", 8846 desc_cnt, bytes_remain, 8847 FC_TLV_DESC_SZ_FROM_LENGTH(tlv), 8848 sizeof(struct fc_diag_cg_sig_desc)); 8849 goto out; 8850 } 8851 /* No action for Link Fault descriptor for now */ 8852 break; 8853 case ELS_DTAG_CG_SIGNAL_CAP: 8854 if (bytes_remain < FC_TLV_DESC_SZ_FROM_LENGTH(tlv) || 8855 FC_TLV_DESC_SZ_FROM_LENGTH(tlv) != 8856 sizeof(struct fc_diag_cg_sig_desc)) { 8857 lpfc_printf_log( 8858 phba, KERN_WARNING, LOG_CGN_MGMT, 8859 "6466 Truncated cgn signal Diagnostic " 8860 "descriptor[%d]: %d vs 0x%zx 0x%zx\n", 8861 desc_cnt, bytes_remain, 8862 FC_TLV_DESC_SZ_FROM_LENGTH(tlv), 8863 sizeof(struct fc_diag_cg_sig_desc)); 8864 goto out; 8865 } 8866 8867 phba->cgn_reg_fpin = phba->cgn_init_reg_fpin; 8868 phba->cgn_reg_signal = phba->cgn_init_reg_signal; 8869 8870 /* We start negotiation with lpfc_fabric_cgn_frequency. 8871 * When we process the EDC, we will settle on the 8872 * higher frequency. 8873 */ 8874 phba->cgn_sig_freq = lpfc_fabric_cgn_frequency; 8875 8876 lpfc_least_capable_settings( 8877 phba, (struct fc_diag_cg_sig_desc *)tlv); 8878 rcv_cap_desc = true; 8879 break; 8880 default: 8881 dtag_nm = lpfc_get_tlv_dtag_nm(dtag); 8882 lpfc_printf_log(phba, KERN_WARNING, LOG_CGN_MGMT, 8883 "6467 unknown Diagnostic " 8884 "Descriptor[%d]: tag x%x (%s)\n", 8885 desc_cnt, dtag, dtag_nm); 8886 } 8887 bytes_remain -= FC_TLV_DESC_SZ_FROM_LENGTH(tlv); 8888 tlv = fc_tlv_next_desc(tlv); 8889 desc_cnt++; 8890 } 8891 out: 8892 /* Need to send back an ACC */ 8893 lpfc_issue_els_edc_rsp(vport, cmdiocb, ndlp); 8894 8895 lpfc_config_cgn_signal(phba); 8896 return 0; 8897 } 8898 8899 /** 8900 * lpfc_els_timeout - Handler funciton to the els timer 8901 * @t: timer context used to obtain the vport. 8902 * 8903 * This routine is invoked by the ELS timer after timeout. It posts the ELS 8904 * timer timeout event by setting the WORKER_ELS_TMO bit to the work port 8905 * event bitmap and then invokes the lpfc_worker_wake_up() routine to wake 8906 * up the worker thread. It is for the worker thread to invoke the routine 8907 * lpfc_els_timeout_handler() to work on the posted event WORKER_ELS_TMO. 8908 **/ 8909 void 8910 lpfc_els_timeout(struct timer_list *t) 8911 { 8912 struct lpfc_vport *vport = from_timer(vport, t, els_tmofunc); 8913 struct lpfc_hba *phba = vport->phba; 8914 uint32_t tmo_posted; 8915 unsigned long iflag; 8916 8917 spin_lock_irqsave(&vport->work_port_lock, iflag); 8918 tmo_posted = vport->work_port_events & WORKER_ELS_TMO; 8919 if ((!tmo_posted) && (!(vport->load_flag & FC_UNLOADING))) 8920 vport->work_port_events |= WORKER_ELS_TMO; 8921 spin_unlock_irqrestore(&vport->work_port_lock, iflag); 8922 8923 if ((!tmo_posted) && (!(vport->load_flag & FC_UNLOADING))) 8924 lpfc_worker_wake_up(phba); 8925 return; 8926 } 8927 8928 8929 /** 8930 * lpfc_els_timeout_handler - Process an els timeout event 8931 * @vport: pointer to a virtual N_Port data structure. 8932 * 8933 * This routine is the actual handler function that processes an ELS timeout 8934 * event. It walks the ELS ring to get and abort all the IOCBs (except the 8935 * ABORT/CLOSE/FARP/FARPR/FDISC), which are associated with the @vport by 8936 * invoking the lpfc_sli_issue_abort_iotag() routine. 8937 **/ 8938 void 8939 lpfc_els_timeout_handler(struct lpfc_vport *vport) 8940 { 8941 struct lpfc_hba *phba = vport->phba; 8942 struct lpfc_sli_ring *pring; 8943 struct lpfc_iocbq *tmp_iocb, *piocb; 8944 IOCB_t *cmd = NULL; 8945 struct lpfc_dmabuf *pcmd; 8946 uint32_t els_command = 0; 8947 uint32_t timeout; 8948 uint32_t remote_ID = 0xffffffff; 8949 LIST_HEAD(abort_list); 8950 8951 8952 timeout = (uint32_t)(phba->fc_ratov << 1); 8953 8954 pring = lpfc_phba_elsring(phba); 8955 if (unlikely(!pring)) 8956 return; 8957 8958 if (phba->pport->load_flag & FC_UNLOADING) 8959 return; 8960 8961 spin_lock_irq(&phba->hbalock); 8962 if (phba->sli_rev == LPFC_SLI_REV4) 8963 spin_lock(&pring->ring_lock); 8964 8965 list_for_each_entry_safe(piocb, tmp_iocb, &pring->txcmplq, list) { 8966 cmd = &piocb->iocb; 8967 8968 if ((piocb->iocb_flag & LPFC_IO_LIBDFC) != 0 || 8969 piocb->iocb.ulpCommand == CMD_ABORT_XRI_CN || 8970 piocb->iocb.ulpCommand == CMD_CLOSE_XRI_CN) 8971 continue; 8972 8973 if (piocb->vport != vport) 8974 continue; 8975 8976 pcmd = (struct lpfc_dmabuf *) piocb->context2; 8977 if (pcmd) 8978 els_command = *(uint32_t *) (pcmd->virt); 8979 8980 if (els_command == ELS_CMD_FARP || 8981 els_command == ELS_CMD_FARPR || 8982 els_command == ELS_CMD_FDISC) 8983 continue; 8984 8985 if (piocb->drvrTimeout > 0) { 8986 if (piocb->drvrTimeout >= timeout) 8987 piocb->drvrTimeout -= timeout; 8988 else 8989 piocb->drvrTimeout = 0; 8990 continue; 8991 } 8992 8993 remote_ID = 0xffffffff; 8994 if (cmd->ulpCommand != CMD_GEN_REQUEST64_CR) 8995 remote_ID = cmd->un.elsreq64.remoteID; 8996 else { 8997 struct lpfc_nodelist *ndlp; 8998 ndlp = __lpfc_findnode_rpi(vport, cmd->ulpContext); 8999 if (ndlp) 9000 remote_ID = ndlp->nlp_DID; 9001 } 9002 list_add_tail(&piocb->dlist, &abort_list); 9003 } 9004 if (phba->sli_rev == LPFC_SLI_REV4) 9005 spin_unlock(&pring->ring_lock); 9006 spin_unlock_irq(&phba->hbalock); 9007 9008 list_for_each_entry_safe(piocb, tmp_iocb, &abort_list, dlist) { 9009 cmd = &piocb->iocb; 9010 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 9011 "0127 ELS timeout Data: x%x x%x x%x " 9012 "x%x\n", els_command, 9013 remote_ID, cmd->ulpCommand, cmd->ulpIoTag); 9014 spin_lock_irq(&phba->hbalock); 9015 list_del_init(&piocb->dlist); 9016 lpfc_sli_issue_abort_iotag(phba, pring, piocb, NULL); 9017 spin_unlock_irq(&phba->hbalock); 9018 } 9019 9020 /* Make sure HBA is alive */ 9021 lpfc_issue_hb_tmo(phba); 9022 9023 if (!list_empty(&pring->txcmplq)) 9024 if (!(phba->pport->load_flag & FC_UNLOADING)) 9025 mod_timer(&vport->els_tmofunc, 9026 jiffies + msecs_to_jiffies(1000 * timeout)); 9027 } 9028 9029 /** 9030 * lpfc_els_flush_cmd - Clean up the outstanding els commands to a vport 9031 * @vport: pointer to a host virtual N_Port data structure. 9032 * 9033 * This routine is used to clean up all the outstanding ELS commands on a 9034 * @vport. It first aborts the @vport by invoking lpfc_fabric_abort_vport() 9035 * routine. After that, it walks the ELS transmit queue to remove all the 9036 * IOCBs with the @vport other than the QUE_RING and ABORT/CLOSE IOCBs. For 9037 * the IOCBs with a non-NULL completion callback function, the callback 9038 * function will be invoked with the status set to IOSTAT_LOCAL_REJECT and 9039 * un.ulpWord[4] set to IOERR_SLI_ABORTED. For IOCBs with a NULL completion 9040 * callback function, the IOCB will simply be released. Finally, it walks 9041 * the ELS transmit completion queue to issue an abort IOCB to any transmit 9042 * completion queue IOCB that is associated with the @vport and is not 9043 * an IOCB from libdfc (i.e., the management plane IOCBs that are not 9044 * part of the discovery state machine) out to HBA by invoking the 9045 * lpfc_sli_issue_abort_iotag() routine. Note that this function issues the 9046 * abort IOCB to any transmit completion queueed IOCB, it does not guarantee 9047 * the IOCBs are aborted when this function returns. 9048 **/ 9049 void 9050 lpfc_els_flush_cmd(struct lpfc_vport *vport) 9051 { 9052 LIST_HEAD(abort_list); 9053 struct lpfc_hba *phba = vport->phba; 9054 struct lpfc_sli_ring *pring; 9055 struct lpfc_iocbq *tmp_iocb, *piocb; 9056 IOCB_t *cmd = NULL; 9057 unsigned long iflags = 0; 9058 9059 lpfc_fabric_abort_vport(vport); 9060 9061 /* 9062 * For SLI3, only the hbalock is required. But SLI4 needs to coordinate 9063 * with the ring insert operation. Because lpfc_sli_issue_abort_iotag 9064 * ultimately grabs the ring_lock, the driver must splice the list into 9065 * a working list and release the locks before calling the abort. 9066 */ 9067 spin_lock_irqsave(&phba->hbalock, iflags); 9068 pring = lpfc_phba_elsring(phba); 9069 9070 /* Bail out if we've no ELS wq, like in PCI error recovery case. */ 9071 if (unlikely(!pring)) { 9072 spin_unlock_irqrestore(&phba->hbalock, iflags); 9073 return; 9074 } 9075 9076 if (phba->sli_rev == LPFC_SLI_REV4) 9077 spin_lock(&pring->ring_lock); 9078 9079 /* First we need to issue aborts to outstanding cmds on txcmpl */ 9080 list_for_each_entry_safe(piocb, tmp_iocb, &pring->txcmplq, list) { 9081 if (piocb->iocb_flag & LPFC_IO_LIBDFC) 9082 continue; 9083 9084 if (piocb->vport != vport) 9085 continue; 9086 9087 if (piocb->iocb_flag & LPFC_DRIVER_ABORTED) 9088 continue; 9089 9090 /* On the ELS ring we can have ELS_REQUESTs or 9091 * GEN_REQUESTs waiting for a response. 9092 */ 9093 cmd = &piocb->iocb; 9094 if (cmd->ulpCommand == CMD_ELS_REQUEST64_CR) { 9095 list_add_tail(&piocb->dlist, &abort_list); 9096 9097 /* If the link is down when flushing ELS commands 9098 * the firmware will not complete them till after 9099 * the link comes back up. This may confuse 9100 * discovery for the new link up, so we need to 9101 * change the compl routine to just clean up the iocb 9102 * and avoid any retry logic. 9103 */ 9104 if (phba->link_state == LPFC_LINK_DOWN) 9105 piocb->iocb_cmpl = lpfc_cmpl_els_link_down; 9106 } 9107 if (cmd->ulpCommand == CMD_GEN_REQUEST64_CR) 9108 list_add_tail(&piocb->dlist, &abort_list); 9109 } 9110 9111 if (phba->sli_rev == LPFC_SLI_REV4) 9112 spin_unlock(&pring->ring_lock); 9113 spin_unlock_irqrestore(&phba->hbalock, iflags); 9114 9115 /* Abort each txcmpl iocb on aborted list and remove the dlist links. */ 9116 list_for_each_entry_safe(piocb, tmp_iocb, &abort_list, dlist) { 9117 spin_lock_irqsave(&phba->hbalock, iflags); 9118 list_del_init(&piocb->dlist); 9119 lpfc_sli_issue_abort_iotag(phba, pring, piocb, NULL); 9120 spin_unlock_irqrestore(&phba->hbalock, iflags); 9121 } 9122 /* Make sure HBA is alive */ 9123 lpfc_issue_hb_tmo(phba); 9124 9125 if (!list_empty(&abort_list)) 9126 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 9127 "3387 abort list for txq not empty\n"); 9128 INIT_LIST_HEAD(&abort_list); 9129 9130 spin_lock_irqsave(&phba->hbalock, iflags); 9131 if (phba->sli_rev == LPFC_SLI_REV4) 9132 spin_lock(&pring->ring_lock); 9133 9134 /* No need to abort the txq list, 9135 * just queue them up for lpfc_sli_cancel_iocbs 9136 */ 9137 list_for_each_entry_safe(piocb, tmp_iocb, &pring->txq, list) { 9138 cmd = &piocb->iocb; 9139 9140 if (piocb->iocb_flag & LPFC_IO_LIBDFC) { 9141 continue; 9142 } 9143 9144 /* Do not flush out the QUE_RING and ABORT/CLOSE iocbs */ 9145 if (cmd->ulpCommand == CMD_QUE_RING_BUF_CN || 9146 cmd->ulpCommand == CMD_QUE_RING_BUF64_CN || 9147 cmd->ulpCommand == CMD_CLOSE_XRI_CN || 9148 cmd->ulpCommand == CMD_ABORT_XRI_CN) 9149 continue; 9150 9151 if (piocb->vport != vport) 9152 continue; 9153 9154 list_del_init(&piocb->list); 9155 list_add_tail(&piocb->list, &abort_list); 9156 } 9157 9158 /* The same holds true for any FLOGI/FDISC on the fabric_iocb_list */ 9159 if (vport == phba->pport) { 9160 list_for_each_entry_safe(piocb, tmp_iocb, 9161 &phba->fabric_iocb_list, list) { 9162 cmd = &piocb->iocb; 9163 list_del_init(&piocb->list); 9164 list_add_tail(&piocb->list, &abort_list); 9165 } 9166 } 9167 9168 if (phba->sli_rev == LPFC_SLI_REV4) 9169 spin_unlock(&pring->ring_lock); 9170 spin_unlock_irqrestore(&phba->hbalock, iflags); 9171 9172 /* Cancel all the IOCBs from the completions list */ 9173 lpfc_sli_cancel_iocbs(phba, &abort_list, 9174 IOSTAT_LOCAL_REJECT, IOERR_SLI_ABORTED); 9175 9176 return; 9177 } 9178 9179 /** 9180 * lpfc_els_flush_all_cmd - Clean up all the outstanding els commands to a HBA 9181 * @phba: pointer to lpfc hba data structure. 9182 * 9183 * This routine is used to clean up all the outstanding ELS commands on a 9184 * @phba. It first aborts the @phba by invoking the lpfc_fabric_abort_hba() 9185 * routine. After that, it walks the ELS transmit queue to remove all the 9186 * IOCBs to the @phba other than the QUE_RING and ABORT/CLOSE IOCBs. For 9187 * the IOCBs with the completion callback function associated, the callback 9188 * function will be invoked with the status set to IOSTAT_LOCAL_REJECT and 9189 * un.ulpWord[4] set to IOERR_SLI_ABORTED. For IOCBs without the completion 9190 * callback function associated, the IOCB will simply be released. Finally, 9191 * it walks the ELS transmit completion queue to issue an abort IOCB to any 9192 * transmit completion queue IOCB that is not an IOCB from libdfc (i.e., the 9193 * management plane IOCBs that are not part of the discovery state machine) 9194 * out to HBA by invoking the lpfc_sli_issue_abort_iotag() routine. 9195 **/ 9196 void 9197 lpfc_els_flush_all_cmd(struct lpfc_hba *phba) 9198 { 9199 struct lpfc_vport *vport; 9200 9201 spin_lock_irq(&phba->port_list_lock); 9202 list_for_each_entry(vport, &phba->port_list, listentry) 9203 lpfc_els_flush_cmd(vport); 9204 spin_unlock_irq(&phba->port_list_lock); 9205 9206 return; 9207 } 9208 9209 /** 9210 * lpfc_send_els_failure_event - Posts an ELS command failure event 9211 * @phba: Pointer to hba context object. 9212 * @cmdiocbp: Pointer to command iocb which reported error. 9213 * @rspiocbp: Pointer to response iocb which reported error. 9214 * 9215 * This function sends an event when there is an ELS command 9216 * failure. 9217 **/ 9218 void 9219 lpfc_send_els_failure_event(struct lpfc_hba *phba, 9220 struct lpfc_iocbq *cmdiocbp, 9221 struct lpfc_iocbq *rspiocbp) 9222 { 9223 struct lpfc_vport *vport = cmdiocbp->vport; 9224 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 9225 struct lpfc_lsrjt_event lsrjt_event; 9226 struct lpfc_fabric_event_header fabric_event; 9227 struct ls_rjt stat; 9228 struct lpfc_nodelist *ndlp; 9229 uint32_t *pcmd; 9230 9231 ndlp = cmdiocbp->context1; 9232 if (!ndlp) 9233 return; 9234 9235 if (rspiocbp->iocb.ulpStatus == IOSTAT_LS_RJT) { 9236 lsrjt_event.header.event_type = FC_REG_ELS_EVENT; 9237 lsrjt_event.header.subcategory = LPFC_EVENT_LSRJT_RCV; 9238 memcpy(lsrjt_event.header.wwpn, &ndlp->nlp_portname, 9239 sizeof(struct lpfc_name)); 9240 memcpy(lsrjt_event.header.wwnn, &ndlp->nlp_nodename, 9241 sizeof(struct lpfc_name)); 9242 pcmd = (uint32_t *) (((struct lpfc_dmabuf *) 9243 cmdiocbp->context2)->virt); 9244 lsrjt_event.command = (pcmd != NULL) ? *pcmd : 0; 9245 stat.un.lsRjtError = be32_to_cpu(rspiocbp->iocb.un.ulpWord[4]); 9246 lsrjt_event.reason_code = stat.un.b.lsRjtRsnCode; 9247 lsrjt_event.explanation = stat.un.b.lsRjtRsnCodeExp; 9248 fc_host_post_vendor_event(shost, 9249 fc_get_event_number(), 9250 sizeof(lsrjt_event), 9251 (char *)&lsrjt_event, 9252 LPFC_NL_VENDOR_ID); 9253 return; 9254 } 9255 if ((rspiocbp->iocb.ulpStatus == IOSTAT_NPORT_BSY) || 9256 (rspiocbp->iocb.ulpStatus == IOSTAT_FABRIC_BSY)) { 9257 fabric_event.event_type = FC_REG_FABRIC_EVENT; 9258 if (rspiocbp->iocb.ulpStatus == IOSTAT_NPORT_BSY) 9259 fabric_event.subcategory = LPFC_EVENT_PORT_BUSY; 9260 else 9261 fabric_event.subcategory = LPFC_EVENT_FABRIC_BUSY; 9262 memcpy(fabric_event.wwpn, &ndlp->nlp_portname, 9263 sizeof(struct lpfc_name)); 9264 memcpy(fabric_event.wwnn, &ndlp->nlp_nodename, 9265 sizeof(struct lpfc_name)); 9266 fc_host_post_vendor_event(shost, 9267 fc_get_event_number(), 9268 sizeof(fabric_event), 9269 (char *)&fabric_event, 9270 LPFC_NL_VENDOR_ID); 9271 return; 9272 } 9273 9274 } 9275 9276 /** 9277 * lpfc_send_els_event - Posts unsolicited els event 9278 * @vport: Pointer to vport object. 9279 * @ndlp: Pointer FC node object. 9280 * @payload: ELS command code type. 9281 * 9282 * This function posts an event when there is an incoming 9283 * unsolicited ELS command. 9284 **/ 9285 static void 9286 lpfc_send_els_event(struct lpfc_vport *vport, 9287 struct lpfc_nodelist *ndlp, 9288 uint32_t *payload) 9289 { 9290 struct lpfc_els_event_header *els_data = NULL; 9291 struct lpfc_logo_event *logo_data = NULL; 9292 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 9293 9294 if (*payload == ELS_CMD_LOGO) { 9295 logo_data = kmalloc(sizeof(struct lpfc_logo_event), GFP_KERNEL); 9296 if (!logo_data) { 9297 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 9298 "0148 Failed to allocate memory " 9299 "for LOGO event\n"); 9300 return; 9301 } 9302 els_data = &logo_data->header; 9303 } else { 9304 els_data = kmalloc(sizeof(struct lpfc_els_event_header), 9305 GFP_KERNEL); 9306 if (!els_data) { 9307 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 9308 "0149 Failed to allocate memory " 9309 "for ELS event\n"); 9310 return; 9311 } 9312 } 9313 els_data->event_type = FC_REG_ELS_EVENT; 9314 switch (*payload) { 9315 case ELS_CMD_PLOGI: 9316 els_data->subcategory = LPFC_EVENT_PLOGI_RCV; 9317 break; 9318 case ELS_CMD_PRLO: 9319 els_data->subcategory = LPFC_EVENT_PRLO_RCV; 9320 break; 9321 case ELS_CMD_ADISC: 9322 els_data->subcategory = LPFC_EVENT_ADISC_RCV; 9323 break; 9324 case ELS_CMD_LOGO: 9325 els_data->subcategory = LPFC_EVENT_LOGO_RCV; 9326 /* Copy the WWPN in the LOGO payload */ 9327 memcpy(logo_data->logo_wwpn, &payload[2], 9328 sizeof(struct lpfc_name)); 9329 break; 9330 default: 9331 kfree(els_data); 9332 return; 9333 } 9334 memcpy(els_data->wwpn, &ndlp->nlp_portname, sizeof(struct lpfc_name)); 9335 memcpy(els_data->wwnn, &ndlp->nlp_nodename, sizeof(struct lpfc_name)); 9336 if (*payload == ELS_CMD_LOGO) { 9337 fc_host_post_vendor_event(shost, 9338 fc_get_event_number(), 9339 sizeof(struct lpfc_logo_event), 9340 (char *)logo_data, 9341 LPFC_NL_VENDOR_ID); 9342 kfree(logo_data); 9343 } else { 9344 fc_host_post_vendor_event(shost, 9345 fc_get_event_number(), 9346 sizeof(struct lpfc_els_event_header), 9347 (char *)els_data, 9348 LPFC_NL_VENDOR_ID); 9349 kfree(els_data); 9350 } 9351 9352 return; 9353 } 9354 9355 9356 DECLARE_ENUM2STR_LOOKUP(lpfc_get_fpin_li_event_nm, fc_fpin_li_event_types, 9357 FC_FPIN_LI_EVT_TYPES_INIT); 9358 9359 DECLARE_ENUM2STR_LOOKUP(lpfc_get_fpin_deli_event_nm, fc_fpin_deli_event_types, 9360 FC_FPIN_DELI_EVT_TYPES_INIT); 9361 9362 DECLARE_ENUM2STR_LOOKUP(lpfc_get_fpin_congn_event_nm, fc_fpin_congn_event_types, 9363 FC_FPIN_CONGN_EVT_TYPES_INIT); 9364 9365 DECLARE_ENUM2STR_LOOKUP(lpfc_get_fpin_congn_severity_nm, 9366 fc_fpin_congn_severity_types, 9367 FC_FPIN_CONGN_SEVERITY_INIT); 9368 9369 9370 /** 9371 * lpfc_display_fpin_wwpn - Display WWPNs accessible by the attached port 9372 * @phba: Pointer to phba object. 9373 * @wwnlist: Pointer to list of WWPNs in FPIN payload 9374 * @cnt: count of WWPNs in FPIN payload 9375 * 9376 * This routine is called by LI and PC descriptors. 9377 * Limit the number of WWPNs displayed to 6 log messages, 6 per log message 9378 */ 9379 static void 9380 lpfc_display_fpin_wwpn(struct lpfc_hba *phba, __be64 *wwnlist, u32 cnt) 9381 { 9382 char buf[LPFC_FPIN_WWPN_LINE_SZ]; 9383 __be64 wwn; 9384 u64 wwpn; 9385 int i, len; 9386 int line = 0; 9387 int wcnt = 0; 9388 bool endit = false; 9389 9390 len = scnprintf(buf, LPFC_FPIN_WWPN_LINE_SZ, "Accessible WWPNs:"); 9391 for (i = 0; i < cnt; i++) { 9392 /* Are we on the last WWPN */ 9393 if (i == (cnt - 1)) 9394 endit = true; 9395 9396 /* Extract the next WWPN from the payload */ 9397 wwn = *wwnlist++; 9398 wwpn = be64_to_cpu(wwn); 9399 len += scnprintf(buf + len, LPFC_FPIN_WWPN_LINE_SZ, 9400 " %016llx", wwpn); 9401 9402 /* Log a message if we are on the last WWPN 9403 * or if we hit the max allowed per message. 9404 */ 9405 wcnt++; 9406 if (wcnt == LPFC_FPIN_WWPN_LINE_CNT || endit) { 9407 buf[len] = 0; 9408 lpfc_printf_log(phba, KERN_INFO, LOG_ELS, 9409 "4686 %s\n", buf); 9410 9411 /* Check if we reached the last WWPN */ 9412 if (endit) 9413 return; 9414 9415 /* Limit the number of log message displayed per FPIN */ 9416 line++; 9417 if (line == LPFC_FPIN_WWPN_NUM_LINE) { 9418 lpfc_printf_log(phba, KERN_INFO, LOG_ELS, 9419 "4687 %d WWPNs Truncated\n", 9420 cnt - i - 1); 9421 return; 9422 } 9423 9424 /* Start over with next log message */ 9425 wcnt = 0; 9426 len = scnprintf(buf, LPFC_FPIN_WWPN_LINE_SZ, 9427 "Additional WWPNs:"); 9428 } 9429 } 9430 } 9431 9432 /** 9433 * lpfc_els_rcv_fpin_li - Process an FPIN Link Integrity Event. 9434 * @phba: Pointer to phba object. 9435 * @tlv: Pointer to the Link Integrity Notification Descriptor. 9436 * 9437 * This function processes a Link Integrity FPIN event by logging a message. 9438 **/ 9439 static void 9440 lpfc_els_rcv_fpin_li(struct lpfc_hba *phba, struct fc_tlv_desc *tlv) 9441 { 9442 struct fc_fn_li_desc *li = (struct fc_fn_li_desc *)tlv; 9443 const char *li_evt_str; 9444 u32 li_evt, cnt; 9445 9446 li_evt = be16_to_cpu(li->event_type); 9447 li_evt_str = lpfc_get_fpin_li_event_nm(li_evt); 9448 cnt = be32_to_cpu(li->pname_count); 9449 9450 lpfc_printf_log(phba, KERN_INFO, LOG_ELS, 9451 "4680 FPIN Link Integrity %s (x%x) " 9452 "Detecting PN x%016llx Attached PN x%016llx " 9453 "Duration %d mSecs Count %d Port Cnt %d\n", 9454 li_evt_str, li_evt, 9455 be64_to_cpu(li->detecting_wwpn), 9456 be64_to_cpu(li->attached_wwpn), 9457 be32_to_cpu(li->event_threshold), 9458 be32_to_cpu(li->event_count), cnt); 9459 9460 lpfc_display_fpin_wwpn(phba, (__be64 *)&li->pname_list, cnt); 9461 } 9462 9463 /** 9464 * lpfc_els_rcv_fpin_del - Process an FPIN Delivery Event. 9465 * @phba: Pointer to hba object. 9466 * @tlv: Pointer to the Delivery Notification Descriptor TLV 9467 * 9468 * This function processes a Delivery FPIN event by logging a message. 9469 **/ 9470 static void 9471 lpfc_els_rcv_fpin_del(struct lpfc_hba *phba, struct fc_tlv_desc *tlv) 9472 { 9473 struct fc_fn_deli_desc *del = (struct fc_fn_deli_desc *)tlv; 9474 const char *del_rsn_str; 9475 u32 del_rsn; 9476 __be32 *frame; 9477 9478 del_rsn = be16_to_cpu(del->deli_reason_code); 9479 del_rsn_str = lpfc_get_fpin_deli_event_nm(del_rsn); 9480 9481 /* Skip over desc_tag/desc_len header to payload */ 9482 frame = (__be32 *)(del + 1); 9483 9484 lpfc_printf_log(phba, KERN_INFO, LOG_ELS, 9485 "4681 FPIN Delivery %s (x%x) " 9486 "Detecting PN x%016llx Attached PN x%016llx " 9487 "DiscHdr0 x%08x " 9488 "DiscHdr1 x%08x DiscHdr2 x%08x DiscHdr3 x%08x " 9489 "DiscHdr4 x%08x DiscHdr5 x%08x\n", 9490 del_rsn_str, del_rsn, 9491 be64_to_cpu(del->detecting_wwpn), 9492 be64_to_cpu(del->attached_wwpn), 9493 be32_to_cpu(frame[0]), 9494 be32_to_cpu(frame[1]), 9495 be32_to_cpu(frame[2]), 9496 be32_to_cpu(frame[3]), 9497 be32_to_cpu(frame[4]), 9498 be32_to_cpu(frame[5])); 9499 } 9500 9501 /** 9502 * lpfc_els_rcv_fpin_peer_cgn - Process a FPIN Peer Congestion Event. 9503 * @phba: Pointer to hba object. 9504 * @tlv: Pointer to the Peer Congestion Notification Descriptor TLV 9505 * 9506 * This function processes a Peer Congestion FPIN event by logging a message. 9507 **/ 9508 static void 9509 lpfc_els_rcv_fpin_peer_cgn(struct lpfc_hba *phba, struct fc_tlv_desc *tlv) 9510 { 9511 struct fc_fn_peer_congn_desc *pc = (struct fc_fn_peer_congn_desc *)tlv; 9512 const char *pc_evt_str; 9513 u32 pc_evt, cnt; 9514 9515 pc_evt = be16_to_cpu(pc->event_type); 9516 pc_evt_str = lpfc_get_fpin_congn_event_nm(pc_evt); 9517 cnt = be32_to_cpu(pc->pname_count); 9518 9519 lpfc_printf_log(phba, KERN_INFO, LOG_CGN_MGMT | LOG_ELS, 9520 "4684 FPIN Peer Congestion %s (x%x) " 9521 "Duration %d mSecs " 9522 "Detecting PN x%016llx Attached PN x%016llx " 9523 "Impacted Port Cnt %d\n", 9524 pc_evt_str, pc_evt, 9525 be32_to_cpu(pc->event_period), 9526 be64_to_cpu(pc->detecting_wwpn), 9527 be64_to_cpu(pc->attached_wwpn), 9528 cnt); 9529 9530 lpfc_display_fpin_wwpn(phba, (__be64 *)&pc->pname_list, cnt); 9531 } 9532 9533 /** 9534 * lpfc_els_rcv_fpin_cgn - Process an FPIN Congestion notification 9535 * @phba: Pointer to hba object. 9536 * @tlv: Pointer to the Congestion Notification Descriptor TLV 9537 * 9538 * This function processes an FPIN Congestion Notifiction. The notification 9539 * could be an Alarm or Warning. This routine feeds that data into driver's 9540 * running congestion algorithm. It also processes the FPIN by 9541 * logging a message. It returns 1 to indicate deliver this message 9542 * to the upper layer or 0 to indicate don't deliver it. 9543 **/ 9544 static int 9545 lpfc_els_rcv_fpin_cgn(struct lpfc_hba *phba, struct fc_tlv_desc *tlv) 9546 { 9547 struct lpfc_cgn_info *cp; 9548 struct fc_fn_congn_desc *cgn = (struct fc_fn_congn_desc *)tlv; 9549 const char *cgn_evt_str; 9550 u32 cgn_evt; 9551 const char *cgn_sev_str; 9552 u32 cgn_sev; 9553 uint16_t value; 9554 u32 crc; 9555 bool nm_log = false; 9556 int rc = 1; 9557 9558 cgn_evt = be16_to_cpu(cgn->event_type); 9559 cgn_evt_str = lpfc_get_fpin_congn_event_nm(cgn_evt); 9560 cgn_sev = cgn->severity; 9561 cgn_sev_str = lpfc_get_fpin_congn_severity_nm(cgn_sev); 9562 9563 /* The driver only takes action on a Credit Stall or Oversubscription 9564 * event type to engage the IO algorithm. The driver prints an 9565 * unmaskable message only for Lost Credit and Credit Stall. 9566 * TODO: Still need to have definition of host action on clear, 9567 * lost credit and device specific event types. 9568 */ 9569 switch (cgn_evt) { 9570 case FPIN_CONGN_LOST_CREDIT: 9571 nm_log = true; 9572 break; 9573 case FPIN_CONGN_CREDIT_STALL: 9574 nm_log = true; 9575 fallthrough; 9576 case FPIN_CONGN_OVERSUBSCRIPTION: 9577 if (cgn_evt == FPIN_CONGN_OVERSUBSCRIPTION) 9578 nm_log = false; 9579 switch (cgn_sev) { 9580 case FPIN_CONGN_SEVERITY_ERROR: 9581 /* Take action here for an Alarm event */ 9582 if (phba->cmf_active_mode != LPFC_CFG_OFF) { 9583 if (phba->cgn_reg_fpin & LPFC_CGN_FPIN_ALARM) { 9584 /* Track of alarm cnt for cgn_info */ 9585 atomic_inc(&phba->cgn_fabric_alarm_cnt); 9586 /* Track of alarm cnt for SYNC_WQE */ 9587 atomic_inc(&phba->cgn_sync_alarm_cnt); 9588 } 9589 goto cleanup; 9590 } 9591 break; 9592 case FPIN_CONGN_SEVERITY_WARNING: 9593 /* Take action here for a Warning event */ 9594 if (phba->cmf_active_mode != LPFC_CFG_OFF) { 9595 if (phba->cgn_reg_fpin & LPFC_CGN_FPIN_WARN) { 9596 /* Track of warning cnt for cgn_info */ 9597 atomic_inc(&phba->cgn_fabric_warn_cnt); 9598 /* Track of warning cnt for SYNC_WQE */ 9599 atomic_inc(&phba->cgn_sync_warn_cnt); 9600 } 9601 cleanup: 9602 /* Save frequency in ms */ 9603 phba->cgn_fpin_frequency = 9604 be32_to_cpu(cgn->event_period); 9605 value = phba->cgn_fpin_frequency; 9606 if (phba->cgn_i) { 9607 cp = (struct lpfc_cgn_info *) 9608 phba->cgn_i->virt; 9609 if (phba->cgn_reg_fpin & 9610 LPFC_CGN_FPIN_ALARM) 9611 cp->cgn_alarm_freq = 9612 cpu_to_le16(value); 9613 if (phba->cgn_reg_fpin & 9614 LPFC_CGN_FPIN_WARN) 9615 cp->cgn_warn_freq = 9616 cpu_to_le16(value); 9617 crc = lpfc_cgn_calc_crc32 9618 (cp, 9619 LPFC_CGN_INFO_SZ, 9620 LPFC_CGN_CRC32_SEED); 9621 cp->cgn_info_crc = cpu_to_le32(crc); 9622 } 9623 9624 /* Don't deliver to upper layer since 9625 * driver took action on this tlv. 9626 */ 9627 rc = 0; 9628 } 9629 break; 9630 } 9631 break; 9632 } 9633 9634 /* Change the log level to unmaskable for the following event types. */ 9635 lpfc_printf_log(phba, (nm_log ? KERN_WARNING : KERN_INFO), 9636 LOG_CGN_MGMT | LOG_ELS, 9637 "4683 FPIN CONGESTION %s type %s (x%x) Event " 9638 "Duration %d mSecs\n", 9639 cgn_sev_str, cgn_evt_str, cgn_evt, 9640 be32_to_cpu(cgn->event_period)); 9641 return rc; 9642 } 9643 9644 void 9645 lpfc_els_rcv_fpin(struct lpfc_vport *vport, void *p, u32 fpin_length) 9646 { 9647 struct lpfc_hba *phba = vport->phba; 9648 struct fc_els_fpin *fpin = (struct fc_els_fpin *)p; 9649 struct fc_tlv_desc *tlv, *first_tlv, *current_tlv; 9650 const char *dtag_nm; 9651 int desc_cnt = 0, bytes_remain, cnt; 9652 u32 dtag, deliver = 0; 9653 int len; 9654 9655 /* FPINs handled only if we are in the right discovery state */ 9656 if (vport->port_state < LPFC_DISC_AUTH) 9657 return; 9658 9659 /* make sure there is the full fpin header */ 9660 if (fpin_length < sizeof(struct fc_els_fpin)) 9661 return; 9662 9663 /* Sanity check descriptor length. The desc_len value does not 9664 * include space for the ELS command and the desc_len fields. 9665 */ 9666 len = be32_to_cpu(fpin->desc_len); 9667 if (fpin_length < len + sizeof(struct fc_els_fpin)) { 9668 lpfc_printf_log(phba, KERN_WARNING, LOG_CGN_MGMT, 9669 "4671 Bad ELS FPIN length %d: %d\n", 9670 len, fpin_length); 9671 return; 9672 } 9673 9674 tlv = (struct fc_tlv_desc *)&fpin->fpin_desc[0]; 9675 first_tlv = tlv; 9676 bytes_remain = fpin_length - offsetof(struct fc_els_fpin, fpin_desc); 9677 bytes_remain = min_t(u32, bytes_remain, be32_to_cpu(fpin->desc_len)); 9678 9679 /* process each descriptor separately */ 9680 while (bytes_remain >= FC_TLV_DESC_HDR_SZ && 9681 bytes_remain >= FC_TLV_DESC_SZ_FROM_LENGTH(tlv)) { 9682 dtag = be32_to_cpu(tlv->desc_tag); 9683 switch (dtag) { 9684 case ELS_DTAG_LNK_INTEGRITY: 9685 lpfc_els_rcv_fpin_li(phba, tlv); 9686 deliver = 1; 9687 break; 9688 case ELS_DTAG_DELIVERY: 9689 lpfc_els_rcv_fpin_del(phba, tlv); 9690 deliver = 1; 9691 break; 9692 case ELS_DTAG_PEER_CONGEST: 9693 lpfc_els_rcv_fpin_peer_cgn(phba, tlv); 9694 deliver = 1; 9695 break; 9696 case ELS_DTAG_CONGESTION: 9697 deliver = lpfc_els_rcv_fpin_cgn(phba, tlv); 9698 break; 9699 default: 9700 dtag_nm = lpfc_get_tlv_dtag_nm(dtag); 9701 lpfc_printf_log(phba, KERN_WARNING, LOG_CGN_MGMT, 9702 "4678 unknown FPIN descriptor[%d]: " 9703 "tag x%x (%s)\n", 9704 desc_cnt, dtag, dtag_nm); 9705 9706 /* If descriptor is bad, drop the rest of the data */ 9707 return; 9708 } 9709 lpfc_cgn_update_stat(phba, dtag); 9710 cnt = be32_to_cpu(tlv->desc_len); 9711 9712 /* Sanity check descriptor length. The desc_len value does not 9713 * include space for the desc_tag and the desc_len fields. 9714 */ 9715 len -= (cnt + sizeof(struct fc_tlv_desc)); 9716 if (len < 0) { 9717 dtag_nm = lpfc_get_tlv_dtag_nm(dtag); 9718 lpfc_printf_log(phba, KERN_WARNING, LOG_CGN_MGMT, 9719 "4672 Bad FPIN descriptor TLV length " 9720 "%d: %d %d %s\n", 9721 cnt, len, fpin_length, dtag_nm); 9722 return; 9723 } 9724 9725 current_tlv = tlv; 9726 bytes_remain -= FC_TLV_DESC_SZ_FROM_LENGTH(tlv); 9727 tlv = fc_tlv_next_desc(tlv); 9728 9729 /* Format payload such that the FPIN delivered to the 9730 * upper layer is a single descriptor FPIN. 9731 */ 9732 if (desc_cnt) 9733 memcpy(first_tlv, current_tlv, 9734 (cnt + sizeof(struct fc_els_fpin))); 9735 9736 /* Adjust the length so that it only reflects a 9737 * single descriptor FPIN. 9738 */ 9739 fpin_length = cnt + sizeof(struct fc_els_fpin); 9740 fpin->desc_len = cpu_to_be32(fpin_length); 9741 fpin_length += sizeof(struct fc_els_fpin); /* the entire FPIN */ 9742 9743 /* Send every descriptor individually to the upper layer */ 9744 if (deliver) 9745 fc_host_fpin_rcv(lpfc_shost_from_vport(vport), 9746 fpin_length, (char *)fpin); 9747 desc_cnt++; 9748 } 9749 } 9750 9751 /** 9752 * lpfc_els_unsol_buffer - Process an unsolicited event data buffer 9753 * @phba: pointer to lpfc hba data structure. 9754 * @pring: pointer to a SLI ring. 9755 * @vport: pointer to a host virtual N_Port data structure. 9756 * @elsiocb: pointer to lpfc els command iocb data structure. 9757 * 9758 * This routine is used for processing the IOCB associated with a unsolicited 9759 * event. It first determines whether there is an existing ndlp that matches 9760 * the DID from the unsolicited IOCB. If not, it will create a new one with 9761 * the DID from the unsolicited IOCB. The ELS command from the unsolicited 9762 * IOCB is then used to invoke the proper routine and to set up proper state 9763 * of the discovery state machine. 9764 **/ 9765 static void 9766 lpfc_els_unsol_buffer(struct lpfc_hba *phba, struct lpfc_sli_ring *pring, 9767 struct lpfc_vport *vport, struct lpfc_iocbq *elsiocb) 9768 { 9769 struct lpfc_nodelist *ndlp; 9770 struct ls_rjt stat; 9771 uint32_t *payload, payload_len; 9772 uint32_t cmd, did, newnode; 9773 uint8_t rjt_exp, rjt_err = 0, init_link = 0; 9774 IOCB_t *icmd = &elsiocb->iocb; 9775 LPFC_MBOXQ_t *mbox; 9776 9777 if (!vport || !(elsiocb->context2)) 9778 goto dropit; 9779 9780 newnode = 0; 9781 payload = ((struct lpfc_dmabuf *)elsiocb->context2)->virt; 9782 payload_len = elsiocb->iocb.unsli3.rcvsli3.acc_len; 9783 cmd = *payload; 9784 if ((phba->sli3_options & LPFC_SLI3_HBQ_ENABLED) == 0) 9785 lpfc_post_buffer(phba, pring, 1); 9786 9787 did = icmd->un.rcvels.remoteID; 9788 if (icmd->ulpStatus) { 9789 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL, 9790 "RCV Unsol ELS: status:x%x/x%x did:x%x", 9791 icmd->ulpStatus, icmd->un.ulpWord[4], did); 9792 goto dropit; 9793 } 9794 9795 /* Check to see if link went down during discovery */ 9796 if (lpfc_els_chk_latt(vport)) 9797 goto dropit; 9798 9799 /* Ignore traffic received during vport shutdown. */ 9800 if (vport->load_flag & FC_UNLOADING) 9801 goto dropit; 9802 9803 /* If NPort discovery is delayed drop incoming ELS */ 9804 if ((vport->fc_flag & FC_DISC_DELAYED) && 9805 (cmd != ELS_CMD_PLOGI)) 9806 goto dropit; 9807 9808 ndlp = lpfc_findnode_did(vport, did); 9809 if (!ndlp) { 9810 /* Cannot find existing Fabric ndlp, so allocate a new one */ 9811 ndlp = lpfc_nlp_init(vport, did); 9812 if (!ndlp) 9813 goto dropit; 9814 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE); 9815 newnode = 1; 9816 if ((did & Fabric_DID_MASK) == Fabric_DID_MASK) 9817 ndlp->nlp_type |= NLP_FABRIC; 9818 } else if (ndlp->nlp_state == NLP_STE_UNUSED_NODE) { 9819 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE); 9820 newnode = 1; 9821 } 9822 9823 phba->fc_stat.elsRcvFrame++; 9824 9825 /* 9826 * Do not process any unsolicited ELS commands 9827 * if the ndlp is in DEV_LOSS 9828 */ 9829 spin_lock_irq(&ndlp->lock); 9830 if (ndlp->nlp_flag & NLP_IN_DEV_LOSS) { 9831 spin_unlock_irq(&ndlp->lock); 9832 if (newnode) 9833 lpfc_nlp_put(ndlp); 9834 goto dropit; 9835 } 9836 spin_unlock_irq(&ndlp->lock); 9837 9838 elsiocb->context1 = lpfc_nlp_get(ndlp); 9839 if (!elsiocb->context1) 9840 goto dropit; 9841 elsiocb->vport = vport; 9842 9843 if ((cmd & ELS_CMD_MASK) == ELS_CMD_RSCN) { 9844 cmd &= ELS_CMD_MASK; 9845 } 9846 /* ELS command <elsCmd> received from NPORT <did> */ 9847 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, 9848 "0112 ELS command x%x received from NPORT x%x " 9849 "refcnt %d Data: x%x x%x x%x x%x\n", 9850 cmd, did, kref_read(&ndlp->kref), vport->port_state, 9851 vport->fc_flag, vport->fc_myDID, vport->fc_prevDID); 9852 9853 /* reject till our FLOGI completes or PLOGI assigned DID via PT2PT */ 9854 if ((vport->port_state < LPFC_FABRIC_CFG_LINK) && 9855 (cmd != ELS_CMD_FLOGI) && 9856 !((cmd == ELS_CMD_PLOGI) && (vport->fc_flag & FC_PT2PT))) { 9857 rjt_err = LSRJT_LOGICAL_BSY; 9858 rjt_exp = LSEXP_NOTHING_MORE; 9859 goto lsrjt; 9860 } 9861 9862 switch (cmd) { 9863 case ELS_CMD_PLOGI: 9864 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL, 9865 "RCV PLOGI: did:x%x/ste:x%x flg:x%x", 9866 did, vport->port_state, ndlp->nlp_flag); 9867 9868 phba->fc_stat.elsRcvPLOGI++; 9869 ndlp = lpfc_plogi_confirm_nport(phba, payload, ndlp); 9870 if (phba->sli_rev == LPFC_SLI_REV4 && 9871 (phba->pport->fc_flag & FC_PT2PT)) { 9872 vport->fc_prevDID = vport->fc_myDID; 9873 /* Our DID needs to be updated before registering 9874 * the vfi. This is done in lpfc_rcv_plogi but 9875 * that is called after the reg_vfi. 9876 */ 9877 vport->fc_myDID = elsiocb->iocb.un.rcvels.parmRo; 9878 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, 9879 "3312 Remote port assigned DID x%x " 9880 "%x\n", vport->fc_myDID, 9881 vport->fc_prevDID); 9882 } 9883 9884 lpfc_send_els_event(vport, ndlp, payload); 9885 9886 /* If Nport discovery is delayed, reject PLOGIs */ 9887 if (vport->fc_flag & FC_DISC_DELAYED) { 9888 rjt_err = LSRJT_UNABLE_TPC; 9889 rjt_exp = LSEXP_NOTHING_MORE; 9890 break; 9891 } 9892 9893 if (vport->port_state < LPFC_DISC_AUTH) { 9894 if (!(phba->pport->fc_flag & FC_PT2PT) || 9895 (phba->pport->fc_flag & FC_PT2PT_PLOGI)) { 9896 rjt_err = LSRJT_UNABLE_TPC; 9897 rjt_exp = LSEXP_NOTHING_MORE; 9898 break; 9899 } 9900 } 9901 9902 spin_lock_irq(&ndlp->lock); 9903 ndlp->nlp_flag &= ~NLP_TARGET_REMOVE; 9904 spin_unlock_irq(&ndlp->lock); 9905 9906 lpfc_disc_state_machine(vport, ndlp, elsiocb, 9907 NLP_EVT_RCV_PLOGI); 9908 9909 break; 9910 case ELS_CMD_FLOGI: 9911 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL, 9912 "RCV FLOGI: did:x%x/ste:x%x flg:x%x", 9913 did, vport->port_state, ndlp->nlp_flag); 9914 9915 phba->fc_stat.elsRcvFLOGI++; 9916 9917 /* If the driver believes fabric discovery is done and is ready, 9918 * bounce the link. There is some descrepancy. 9919 */ 9920 if (vport->port_state >= LPFC_LOCAL_CFG_LINK && 9921 vport->fc_flag & FC_PT2PT && 9922 vport->rcv_flogi_cnt >= 1) { 9923 rjt_err = LSRJT_LOGICAL_BSY; 9924 rjt_exp = LSEXP_NOTHING_MORE; 9925 init_link++; 9926 goto lsrjt; 9927 } 9928 9929 lpfc_els_rcv_flogi(vport, elsiocb, ndlp); 9930 if (newnode) 9931 lpfc_disc_state_machine(vport, ndlp, NULL, 9932 NLP_EVT_DEVICE_RM); 9933 break; 9934 case ELS_CMD_LOGO: 9935 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL, 9936 "RCV LOGO: did:x%x/ste:x%x flg:x%x", 9937 did, vport->port_state, ndlp->nlp_flag); 9938 9939 phba->fc_stat.elsRcvLOGO++; 9940 lpfc_send_els_event(vport, ndlp, payload); 9941 if (vport->port_state < LPFC_DISC_AUTH) { 9942 rjt_err = LSRJT_UNABLE_TPC; 9943 rjt_exp = LSEXP_NOTHING_MORE; 9944 break; 9945 } 9946 lpfc_disc_state_machine(vport, ndlp, elsiocb, NLP_EVT_RCV_LOGO); 9947 if (newnode) 9948 lpfc_disc_state_machine(vport, ndlp, NULL, 9949 NLP_EVT_DEVICE_RM); 9950 break; 9951 case ELS_CMD_PRLO: 9952 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL, 9953 "RCV PRLO: did:x%x/ste:x%x flg:x%x", 9954 did, vport->port_state, ndlp->nlp_flag); 9955 9956 phba->fc_stat.elsRcvPRLO++; 9957 lpfc_send_els_event(vport, ndlp, payload); 9958 if (vport->port_state < LPFC_DISC_AUTH) { 9959 rjt_err = LSRJT_UNABLE_TPC; 9960 rjt_exp = LSEXP_NOTHING_MORE; 9961 break; 9962 } 9963 lpfc_disc_state_machine(vport, ndlp, elsiocb, NLP_EVT_RCV_PRLO); 9964 break; 9965 case ELS_CMD_LCB: 9966 phba->fc_stat.elsRcvLCB++; 9967 lpfc_els_rcv_lcb(vport, elsiocb, ndlp); 9968 break; 9969 case ELS_CMD_RDP: 9970 phba->fc_stat.elsRcvRDP++; 9971 lpfc_els_rcv_rdp(vport, elsiocb, ndlp); 9972 break; 9973 case ELS_CMD_RSCN: 9974 phba->fc_stat.elsRcvRSCN++; 9975 lpfc_els_rcv_rscn(vport, elsiocb, ndlp); 9976 if (newnode) 9977 lpfc_disc_state_machine(vport, ndlp, NULL, 9978 NLP_EVT_DEVICE_RM); 9979 break; 9980 case ELS_CMD_ADISC: 9981 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL, 9982 "RCV ADISC: did:x%x/ste:x%x flg:x%x", 9983 did, vport->port_state, ndlp->nlp_flag); 9984 9985 lpfc_send_els_event(vport, ndlp, payload); 9986 phba->fc_stat.elsRcvADISC++; 9987 if (vport->port_state < LPFC_DISC_AUTH) { 9988 rjt_err = LSRJT_UNABLE_TPC; 9989 rjt_exp = LSEXP_NOTHING_MORE; 9990 break; 9991 } 9992 lpfc_disc_state_machine(vport, ndlp, elsiocb, 9993 NLP_EVT_RCV_ADISC); 9994 break; 9995 case ELS_CMD_PDISC: 9996 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL, 9997 "RCV PDISC: did:x%x/ste:x%x flg:x%x", 9998 did, vport->port_state, ndlp->nlp_flag); 9999 10000 phba->fc_stat.elsRcvPDISC++; 10001 if (vport->port_state < LPFC_DISC_AUTH) { 10002 rjt_err = LSRJT_UNABLE_TPC; 10003 rjt_exp = LSEXP_NOTHING_MORE; 10004 break; 10005 } 10006 lpfc_disc_state_machine(vport, ndlp, elsiocb, 10007 NLP_EVT_RCV_PDISC); 10008 break; 10009 case ELS_CMD_FARPR: 10010 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL, 10011 "RCV FARPR: did:x%x/ste:x%x flg:x%x", 10012 did, vport->port_state, ndlp->nlp_flag); 10013 10014 phba->fc_stat.elsRcvFARPR++; 10015 lpfc_els_rcv_farpr(vport, elsiocb, ndlp); 10016 break; 10017 case ELS_CMD_FARP: 10018 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL, 10019 "RCV FARP: did:x%x/ste:x%x flg:x%x", 10020 did, vport->port_state, ndlp->nlp_flag); 10021 10022 phba->fc_stat.elsRcvFARP++; 10023 lpfc_els_rcv_farp(vport, elsiocb, ndlp); 10024 break; 10025 case ELS_CMD_FAN: 10026 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL, 10027 "RCV FAN: did:x%x/ste:x%x flg:x%x", 10028 did, vport->port_state, ndlp->nlp_flag); 10029 10030 phba->fc_stat.elsRcvFAN++; 10031 lpfc_els_rcv_fan(vport, elsiocb, ndlp); 10032 break; 10033 case ELS_CMD_PRLI: 10034 case ELS_CMD_NVMEPRLI: 10035 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL, 10036 "RCV PRLI: did:x%x/ste:x%x flg:x%x", 10037 did, vport->port_state, ndlp->nlp_flag); 10038 10039 phba->fc_stat.elsRcvPRLI++; 10040 if ((vport->port_state < LPFC_DISC_AUTH) && 10041 (vport->fc_flag & FC_FABRIC)) { 10042 rjt_err = LSRJT_UNABLE_TPC; 10043 rjt_exp = LSEXP_NOTHING_MORE; 10044 break; 10045 } 10046 lpfc_disc_state_machine(vport, ndlp, elsiocb, NLP_EVT_RCV_PRLI); 10047 break; 10048 case ELS_CMD_LIRR: 10049 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL, 10050 "RCV LIRR: did:x%x/ste:x%x flg:x%x", 10051 did, vport->port_state, ndlp->nlp_flag); 10052 10053 phba->fc_stat.elsRcvLIRR++; 10054 lpfc_els_rcv_lirr(vport, elsiocb, ndlp); 10055 if (newnode) 10056 lpfc_disc_state_machine(vport, ndlp, NULL, 10057 NLP_EVT_DEVICE_RM); 10058 break; 10059 case ELS_CMD_RLS: 10060 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL, 10061 "RCV RLS: did:x%x/ste:x%x flg:x%x", 10062 did, vport->port_state, ndlp->nlp_flag); 10063 10064 phba->fc_stat.elsRcvRLS++; 10065 lpfc_els_rcv_rls(vport, elsiocb, ndlp); 10066 if (newnode) 10067 lpfc_disc_state_machine(vport, ndlp, NULL, 10068 NLP_EVT_DEVICE_RM); 10069 break; 10070 case ELS_CMD_RPL: 10071 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL, 10072 "RCV RPL: did:x%x/ste:x%x flg:x%x", 10073 did, vport->port_state, ndlp->nlp_flag); 10074 10075 phba->fc_stat.elsRcvRPL++; 10076 lpfc_els_rcv_rpl(vport, elsiocb, ndlp); 10077 if (newnode) 10078 lpfc_disc_state_machine(vport, ndlp, NULL, 10079 NLP_EVT_DEVICE_RM); 10080 break; 10081 case ELS_CMD_RNID: 10082 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL, 10083 "RCV RNID: did:x%x/ste:x%x flg:x%x", 10084 did, vport->port_state, ndlp->nlp_flag); 10085 10086 phba->fc_stat.elsRcvRNID++; 10087 lpfc_els_rcv_rnid(vport, elsiocb, ndlp); 10088 if (newnode) 10089 lpfc_disc_state_machine(vport, ndlp, NULL, 10090 NLP_EVT_DEVICE_RM); 10091 break; 10092 case ELS_CMD_RTV: 10093 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL, 10094 "RCV RTV: did:x%x/ste:x%x flg:x%x", 10095 did, vport->port_state, ndlp->nlp_flag); 10096 phba->fc_stat.elsRcvRTV++; 10097 lpfc_els_rcv_rtv(vport, elsiocb, ndlp); 10098 if (newnode) 10099 lpfc_disc_state_machine(vport, ndlp, NULL, 10100 NLP_EVT_DEVICE_RM); 10101 break; 10102 case ELS_CMD_RRQ: 10103 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL, 10104 "RCV RRQ: did:x%x/ste:x%x flg:x%x", 10105 did, vport->port_state, ndlp->nlp_flag); 10106 10107 phba->fc_stat.elsRcvRRQ++; 10108 lpfc_els_rcv_rrq(vport, elsiocb, ndlp); 10109 if (newnode) 10110 lpfc_disc_state_machine(vport, ndlp, NULL, 10111 NLP_EVT_DEVICE_RM); 10112 break; 10113 case ELS_CMD_ECHO: 10114 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL, 10115 "RCV ECHO: did:x%x/ste:x%x flg:x%x", 10116 did, vport->port_state, ndlp->nlp_flag); 10117 10118 phba->fc_stat.elsRcvECHO++; 10119 lpfc_els_rcv_echo(vport, elsiocb, ndlp); 10120 if (newnode) 10121 lpfc_disc_state_machine(vport, ndlp, NULL, 10122 NLP_EVT_DEVICE_RM); 10123 break; 10124 case ELS_CMD_REC: 10125 /* receive this due to exchange closed */ 10126 rjt_err = LSRJT_UNABLE_TPC; 10127 rjt_exp = LSEXP_INVALID_OX_RX; 10128 break; 10129 case ELS_CMD_FPIN: 10130 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL, 10131 "RCV FPIN: did:x%x/ste:x%x flg:x%x", 10132 did, vport->port_state, ndlp->nlp_flag); 10133 10134 lpfc_els_rcv_fpin(vport, (struct fc_els_fpin *)payload, 10135 payload_len); 10136 10137 /* There are no replies, so no rjt codes */ 10138 break; 10139 case ELS_CMD_EDC: 10140 lpfc_els_rcv_edc(vport, elsiocb, ndlp); 10141 break; 10142 case ELS_CMD_RDF: 10143 phba->fc_stat.elsRcvRDF++; 10144 /* Accept RDF only from fabric controller */ 10145 if (did != Fabric_Cntl_DID) { 10146 lpfc_printf_vlog(vport, KERN_WARNING, LOG_ELS, 10147 "1115 Received RDF from invalid DID " 10148 "x%x\n", did); 10149 rjt_err = LSRJT_PROTOCOL_ERR; 10150 rjt_exp = LSEXP_NOTHING_MORE; 10151 goto lsrjt; 10152 } 10153 10154 lpfc_els_rcv_rdf(vport, elsiocb, ndlp); 10155 break; 10156 default: 10157 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL, 10158 "RCV ELS cmd: cmd:x%x did:x%x/ste:x%x", 10159 cmd, did, vport->port_state); 10160 10161 /* Unsupported ELS command, reject */ 10162 rjt_err = LSRJT_CMD_UNSUPPORTED; 10163 rjt_exp = LSEXP_NOTHING_MORE; 10164 10165 /* Unknown ELS command <elsCmd> received from NPORT <did> */ 10166 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 10167 "0115 Unknown ELS command x%x " 10168 "received from NPORT x%x\n", cmd, did); 10169 if (newnode) 10170 lpfc_disc_state_machine(vport, ndlp, NULL, 10171 NLP_EVT_DEVICE_RM); 10172 break; 10173 } 10174 10175 lsrjt: 10176 /* check if need to LS_RJT received ELS cmd */ 10177 if (rjt_err) { 10178 memset(&stat, 0, sizeof(stat)); 10179 stat.un.b.lsRjtRsnCode = rjt_err; 10180 stat.un.b.lsRjtRsnCodeExp = rjt_exp; 10181 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, elsiocb, ndlp, 10182 NULL); 10183 /* Remove the reference from above for new nodes. */ 10184 if (newnode) 10185 lpfc_disc_state_machine(vport, ndlp, NULL, 10186 NLP_EVT_DEVICE_RM); 10187 } 10188 10189 /* Release the reference on this elsiocb, not the ndlp. */ 10190 lpfc_nlp_put(elsiocb->context1); 10191 elsiocb->context1 = NULL; 10192 10193 /* Special case. Driver received an unsolicited command that 10194 * unsupportable given the driver's current state. Reset the 10195 * link and start over. 10196 */ 10197 if (init_link) { 10198 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 10199 if (!mbox) 10200 return; 10201 lpfc_linkdown(phba); 10202 lpfc_init_link(phba, mbox, 10203 phba->cfg_topology, 10204 phba->cfg_link_speed); 10205 mbox->u.mb.un.varInitLnk.lipsr_AL_PA = 0; 10206 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl; 10207 mbox->vport = vport; 10208 if (lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT) == 10209 MBX_NOT_FINISHED) 10210 mempool_free(mbox, phba->mbox_mem_pool); 10211 } 10212 10213 return; 10214 10215 dropit: 10216 if (vport && !(vport->load_flag & FC_UNLOADING)) 10217 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 10218 "0111 Dropping received ELS cmd " 10219 "Data: x%x x%x x%x\n", 10220 icmd->ulpStatus, icmd->un.ulpWord[4], icmd->ulpTimeout); 10221 phba->fc_stat.elsRcvDrop++; 10222 } 10223 10224 /** 10225 * lpfc_els_unsol_event - Process an unsolicited event from an els sli ring 10226 * @phba: pointer to lpfc hba data structure. 10227 * @pring: pointer to a SLI ring. 10228 * @elsiocb: pointer to lpfc els iocb data structure. 10229 * 10230 * This routine is used to process an unsolicited event received from a SLI 10231 * (Service Level Interface) ring. The actual processing of the data buffer 10232 * associated with the unsolicited event is done by invoking the routine 10233 * lpfc_els_unsol_buffer() after properly set up the iocb buffer from the 10234 * SLI ring on which the unsolicited event was received. 10235 **/ 10236 void 10237 lpfc_els_unsol_event(struct lpfc_hba *phba, struct lpfc_sli_ring *pring, 10238 struct lpfc_iocbq *elsiocb) 10239 { 10240 struct lpfc_vport *vport = phba->pport; 10241 IOCB_t *icmd = &elsiocb->iocb; 10242 dma_addr_t paddr; 10243 struct lpfc_dmabuf *bdeBuf1 = elsiocb->context2; 10244 struct lpfc_dmabuf *bdeBuf2 = elsiocb->context3; 10245 10246 elsiocb->context1 = NULL; 10247 elsiocb->context2 = NULL; 10248 elsiocb->context3 = NULL; 10249 10250 if (icmd->ulpStatus == IOSTAT_NEED_BUFFER) { 10251 lpfc_sli_hbqbuf_add_hbqs(phba, LPFC_ELS_HBQ); 10252 } else if (icmd->ulpStatus == IOSTAT_LOCAL_REJECT && 10253 (icmd->un.ulpWord[4] & IOERR_PARAM_MASK) == 10254 IOERR_RCV_BUFFER_WAITING) { 10255 phba->fc_stat.NoRcvBuf++; 10256 /* Not enough posted buffers; Try posting more buffers */ 10257 if (!(phba->sli3_options & LPFC_SLI3_HBQ_ENABLED)) 10258 lpfc_post_buffer(phba, pring, 0); 10259 return; 10260 } 10261 10262 if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) && 10263 (icmd->ulpCommand == CMD_IOCB_RCV_ELS64_CX || 10264 icmd->ulpCommand == CMD_IOCB_RCV_SEQ64_CX)) { 10265 if (icmd->unsli3.rcvsli3.vpi == 0xffff) 10266 vport = phba->pport; 10267 else 10268 vport = lpfc_find_vport_by_vpid(phba, 10269 icmd->unsli3.rcvsli3.vpi); 10270 } 10271 10272 /* If there are no BDEs associated 10273 * with this IOCB, there is nothing to do. 10274 */ 10275 if (icmd->ulpBdeCount == 0) 10276 return; 10277 10278 /* type of ELS cmd is first 32bit word 10279 * in packet 10280 */ 10281 if (phba->sli3_options & LPFC_SLI3_HBQ_ENABLED) { 10282 elsiocb->context2 = bdeBuf1; 10283 } else { 10284 paddr = getPaddr(icmd->un.cont64[0].addrHigh, 10285 icmd->un.cont64[0].addrLow); 10286 elsiocb->context2 = lpfc_sli_ringpostbuf_get(phba, pring, 10287 paddr); 10288 } 10289 10290 lpfc_els_unsol_buffer(phba, pring, vport, elsiocb); 10291 /* 10292 * The different unsolicited event handlers would tell us 10293 * if they are done with "mp" by setting context2 to NULL. 10294 */ 10295 if (elsiocb->context2) { 10296 lpfc_in_buf_free(phba, (struct lpfc_dmabuf *)elsiocb->context2); 10297 elsiocb->context2 = NULL; 10298 } 10299 10300 /* RCV_ELS64_CX provide for 2 BDEs - process 2nd if included */ 10301 if ((phba->sli3_options & LPFC_SLI3_HBQ_ENABLED) && 10302 icmd->ulpBdeCount == 2) { 10303 elsiocb->context2 = bdeBuf2; 10304 lpfc_els_unsol_buffer(phba, pring, vport, elsiocb); 10305 /* free mp if we are done with it */ 10306 if (elsiocb->context2) { 10307 lpfc_in_buf_free(phba, elsiocb->context2); 10308 elsiocb->context2 = NULL; 10309 } 10310 } 10311 } 10312 10313 static void 10314 lpfc_start_fdmi(struct lpfc_vport *vport) 10315 { 10316 struct lpfc_nodelist *ndlp; 10317 10318 /* If this is the first time, allocate an ndlp and initialize 10319 * it. Otherwise, make sure the node is enabled and then do the 10320 * login. 10321 */ 10322 ndlp = lpfc_findnode_did(vport, FDMI_DID); 10323 if (!ndlp) { 10324 ndlp = lpfc_nlp_init(vport, FDMI_DID); 10325 if (ndlp) { 10326 ndlp->nlp_type |= NLP_FABRIC; 10327 } else { 10328 return; 10329 } 10330 } 10331 10332 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE); 10333 lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0); 10334 } 10335 10336 /** 10337 * lpfc_do_scr_ns_plogi - Issue a plogi to the name server for scr 10338 * @phba: pointer to lpfc hba data structure. 10339 * @vport: pointer to a virtual N_Port data structure. 10340 * 10341 * This routine issues a Port Login (PLOGI) to the Name Server with 10342 * State Change Request (SCR) for a @vport. This routine will create an 10343 * ndlp for the Name Server associated to the @vport if such node does 10344 * not already exist. The PLOGI to Name Server is issued by invoking the 10345 * lpfc_issue_els_plogi() routine. If Fabric-Device Management Interface 10346 * (FDMI) is configured to the @vport, a FDMI node will be created and 10347 * the PLOGI to FDMI is issued by invoking lpfc_issue_els_plogi() routine. 10348 **/ 10349 void 10350 lpfc_do_scr_ns_plogi(struct lpfc_hba *phba, struct lpfc_vport *vport) 10351 { 10352 struct lpfc_nodelist *ndlp; 10353 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 10354 10355 /* 10356 * If lpfc_delay_discovery parameter is set and the clean address 10357 * bit is cleared and fc fabric parameters chenged, delay FC NPort 10358 * discovery. 10359 */ 10360 spin_lock_irq(shost->host_lock); 10361 if (vport->fc_flag & FC_DISC_DELAYED) { 10362 spin_unlock_irq(shost->host_lock); 10363 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 10364 "3334 Delay fc port discovery for %d secs\n", 10365 phba->fc_ratov); 10366 mod_timer(&vport->delayed_disc_tmo, 10367 jiffies + msecs_to_jiffies(1000 * phba->fc_ratov)); 10368 return; 10369 } 10370 spin_unlock_irq(shost->host_lock); 10371 10372 ndlp = lpfc_findnode_did(vport, NameServer_DID); 10373 if (!ndlp) { 10374 ndlp = lpfc_nlp_init(vport, NameServer_DID); 10375 if (!ndlp) { 10376 if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) { 10377 lpfc_disc_start(vport); 10378 return; 10379 } 10380 lpfc_vport_set_state(vport, FC_VPORT_FAILED); 10381 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 10382 "0251 NameServer login: no memory\n"); 10383 return; 10384 } 10385 } 10386 10387 ndlp->nlp_type |= NLP_FABRIC; 10388 10389 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE); 10390 10391 if (lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0)) { 10392 lpfc_vport_set_state(vport, FC_VPORT_FAILED); 10393 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 10394 "0252 Cannot issue NameServer login\n"); 10395 return; 10396 } 10397 10398 if ((phba->cfg_enable_SmartSAN || 10399 (phba->cfg_fdmi_on == LPFC_FDMI_SUPPORT)) && 10400 (vport->load_flag & FC_ALLOW_FDMI)) 10401 lpfc_start_fdmi(vport); 10402 } 10403 10404 /** 10405 * lpfc_cmpl_reg_new_vport - Completion callback function to register new vport 10406 * @phba: pointer to lpfc hba data structure. 10407 * @pmb: pointer to the driver internal queue element for mailbox command. 10408 * 10409 * This routine is the completion callback function to register new vport 10410 * mailbox command. If the new vport mailbox command completes successfully, 10411 * the fabric registration login shall be performed on physical port (the 10412 * new vport created is actually a physical port, with VPI 0) or the port 10413 * login to Name Server for State Change Request (SCR) will be performed 10414 * on virtual port (real virtual port, with VPI greater than 0). 10415 **/ 10416 static void 10417 lpfc_cmpl_reg_new_vport(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 10418 { 10419 struct lpfc_vport *vport = pmb->vport; 10420 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 10421 struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *)pmb->ctx_ndlp; 10422 MAILBOX_t *mb = &pmb->u.mb; 10423 int rc; 10424 10425 spin_lock_irq(shost->host_lock); 10426 vport->fc_flag &= ~FC_VPORT_NEEDS_REG_VPI; 10427 spin_unlock_irq(shost->host_lock); 10428 10429 if (mb->mbxStatus) { 10430 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 10431 "0915 Register VPI failed : Status: x%x" 10432 " upd bit: x%x \n", mb->mbxStatus, 10433 mb->un.varRegVpi.upd); 10434 if (phba->sli_rev == LPFC_SLI_REV4 && 10435 mb->un.varRegVpi.upd) 10436 goto mbox_err_exit ; 10437 10438 switch (mb->mbxStatus) { 10439 case 0x11: /* unsupported feature */ 10440 case 0x9603: /* max_vpi exceeded */ 10441 case 0x9602: /* Link event since CLEAR_LA */ 10442 /* giving up on vport registration */ 10443 lpfc_vport_set_state(vport, FC_VPORT_FAILED); 10444 spin_lock_irq(shost->host_lock); 10445 vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP); 10446 spin_unlock_irq(shost->host_lock); 10447 lpfc_can_disctmo(vport); 10448 break; 10449 /* If reg_vpi fail with invalid VPI status, re-init VPI */ 10450 case 0x20: 10451 spin_lock_irq(shost->host_lock); 10452 vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI; 10453 spin_unlock_irq(shost->host_lock); 10454 lpfc_init_vpi(phba, pmb, vport->vpi); 10455 pmb->vport = vport; 10456 pmb->mbox_cmpl = lpfc_init_vpi_cmpl; 10457 rc = lpfc_sli_issue_mbox(phba, pmb, 10458 MBX_NOWAIT); 10459 if (rc == MBX_NOT_FINISHED) { 10460 lpfc_printf_vlog(vport, KERN_ERR, 10461 LOG_TRACE_EVENT, 10462 "2732 Failed to issue INIT_VPI" 10463 " mailbox command\n"); 10464 } else { 10465 lpfc_nlp_put(ndlp); 10466 return; 10467 } 10468 fallthrough; 10469 default: 10470 /* Try to recover from this error */ 10471 if (phba->sli_rev == LPFC_SLI_REV4) 10472 lpfc_sli4_unreg_all_rpis(vport); 10473 lpfc_mbx_unreg_vpi(vport); 10474 spin_lock_irq(shost->host_lock); 10475 vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI; 10476 spin_unlock_irq(shost->host_lock); 10477 if (mb->mbxStatus == MBX_NOT_FINISHED) 10478 break; 10479 if ((vport->port_type == LPFC_PHYSICAL_PORT) && 10480 !(vport->fc_flag & FC_LOGO_RCVD_DID_CHNG)) { 10481 if (phba->sli_rev == LPFC_SLI_REV4) 10482 lpfc_issue_init_vfi(vport); 10483 else 10484 lpfc_initial_flogi(vport); 10485 } else { 10486 lpfc_initial_fdisc(vport); 10487 } 10488 break; 10489 } 10490 } else { 10491 spin_lock_irq(shost->host_lock); 10492 vport->vpi_state |= LPFC_VPI_REGISTERED; 10493 spin_unlock_irq(shost->host_lock); 10494 if (vport == phba->pport) { 10495 if (phba->sli_rev < LPFC_SLI_REV4) 10496 lpfc_issue_fabric_reglogin(vport); 10497 else { 10498 /* 10499 * If the physical port is instantiated using 10500 * FDISC, do not start vport discovery. 10501 */ 10502 if (vport->port_state != LPFC_FDISC) 10503 lpfc_start_fdiscs(phba); 10504 lpfc_do_scr_ns_plogi(phba, vport); 10505 } 10506 } else { 10507 lpfc_do_scr_ns_plogi(phba, vport); 10508 } 10509 } 10510 mbox_err_exit: 10511 /* Now, we decrement the ndlp reference count held for this 10512 * callback function 10513 */ 10514 lpfc_nlp_put(ndlp); 10515 10516 mempool_free(pmb, phba->mbox_mem_pool); 10517 return; 10518 } 10519 10520 /** 10521 * lpfc_register_new_vport - Register a new vport with a HBA 10522 * @phba: pointer to lpfc hba data structure. 10523 * @vport: pointer to a host virtual N_Port data structure. 10524 * @ndlp: pointer to a node-list data structure. 10525 * 10526 * This routine registers the @vport as a new virtual port with a HBA. 10527 * It is done through a registering vpi mailbox command. 10528 **/ 10529 void 10530 lpfc_register_new_vport(struct lpfc_hba *phba, struct lpfc_vport *vport, 10531 struct lpfc_nodelist *ndlp) 10532 { 10533 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 10534 LPFC_MBOXQ_t *mbox; 10535 10536 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 10537 if (mbox) { 10538 lpfc_reg_vpi(vport, mbox); 10539 mbox->vport = vport; 10540 mbox->ctx_ndlp = lpfc_nlp_get(ndlp); 10541 if (!mbox->ctx_ndlp) { 10542 mempool_free(mbox, phba->mbox_mem_pool); 10543 goto mbox_err_exit; 10544 } 10545 10546 mbox->mbox_cmpl = lpfc_cmpl_reg_new_vport; 10547 if (lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT) 10548 == MBX_NOT_FINISHED) { 10549 /* mailbox command not success, decrement ndlp 10550 * reference count for this command 10551 */ 10552 lpfc_nlp_put(ndlp); 10553 mempool_free(mbox, phba->mbox_mem_pool); 10554 10555 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 10556 "0253 Register VPI: Can't send mbox\n"); 10557 goto mbox_err_exit; 10558 } 10559 } else { 10560 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 10561 "0254 Register VPI: no memory\n"); 10562 goto mbox_err_exit; 10563 } 10564 return; 10565 10566 mbox_err_exit: 10567 lpfc_vport_set_state(vport, FC_VPORT_FAILED); 10568 spin_lock_irq(shost->host_lock); 10569 vport->fc_flag &= ~FC_VPORT_NEEDS_REG_VPI; 10570 spin_unlock_irq(shost->host_lock); 10571 return; 10572 } 10573 10574 /** 10575 * lpfc_cancel_all_vport_retry_delay_timer - Cancel all vport retry delay timer 10576 * @phba: pointer to lpfc hba data structure. 10577 * 10578 * This routine cancels the retry delay timers to all the vports. 10579 **/ 10580 void 10581 lpfc_cancel_all_vport_retry_delay_timer(struct lpfc_hba *phba) 10582 { 10583 struct lpfc_vport **vports; 10584 struct lpfc_nodelist *ndlp; 10585 uint32_t link_state; 10586 int i; 10587 10588 /* Treat this failure as linkdown for all vports */ 10589 link_state = phba->link_state; 10590 lpfc_linkdown(phba); 10591 phba->link_state = link_state; 10592 10593 vports = lpfc_create_vport_work_array(phba); 10594 10595 if (vports) { 10596 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) { 10597 ndlp = lpfc_findnode_did(vports[i], Fabric_DID); 10598 if (ndlp) 10599 lpfc_cancel_retry_delay_tmo(vports[i], ndlp); 10600 lpfc_els_flush_cmd(vports[i]); 10601 } 10602 lpfc_destroy_vport_work_array(phba, vports); 10603 } 10604 } 10605 10606 /** 10607 * lpfc_retry_pport_discovery - Start timer to retry FLOGI. 10608 * @phba: pointer to lpfc hba data structure. 10609 * 10610 * This routine abort all pending discovery commands and 10611 * start a timer to retry FLOGI for the physical port 10612 * discovery. 10613 **/ 10614 void 10615 lpfc_retry_pport_discovery(struct lpfc_hba *phba) 10616 { 10617 struct lpfc_nodelist *ndlp; 10618 10619 /* Cancel the all vports retry delay retry timers */ 10620 lpfc_cancel_all_vport_retry_delay_timer(phba); 10621 10622 /* If fabric require FLOGI, then re-instantiate physical login */ 10623 ndlp = lpfc_findnode_did(phba->pport, Fabric_DID); 10624 if (!ndlp) 10625 return; 10626 10627 mod_timer(&ndlp->nlp_delayfunc, jiffies + msecs_to_jiffies(1000)); 10628 spin_lock_irq(&ndlp->lock); 10629 ndlp->nlp_flag |= NLP_DELAY_TMO; 10630 spin_unlock_irq(&ndlp->lock); 10631 ndlp->nlp_last_elscmd = ELS_CMD_FLOGI; 10632 phba->pport->port_state = LPFC_FLOGI; 10633 return; 10634 } 10635 10636 /** 10637 * lpfc_fabric_login_reqd - Check if FLOGI required. 10638 * @phba: pointer to lpfc hba data structure. 10639 * @cmdiocb: pointer to FDISC command iocb. 10640 * @rspiocb: pointer to FDISC response iocb. 10641 * 10642 * This routine checks if a FLOGI is reguired for FDISC 10643 * to succeed. 10644 **/ 10645 static int 10646 lpfc_fabric_login_reqd(struct lpfc_hba *phba, 10647 struct lpfc_iocbq *cmdiocb, 10648 struct lpfc_iocbq *rspiocb) 10649 { 10650 10651 if ((rspiocb->iocb.ulpStatus != IOSTAT_FABRIC_RJT) || 10652 (rspiocb->iocb.un.ulpWord[4] != RJT_LOGIN_REQUIRED)) 10653 return 0; 10654 else 10655 return 1; 10656 } 10657 10658 /** 10659 * lpfc_cmpl_els_fdisc - Completion function for fdisc iocb command 10660 * @phba: pointer to lpfc hba data structure. 10661 * @cmdiocb: pointer to lpfc command iocb data structure. 10662 * @rspiocb: pointer to lpfc response iocb data structure. 10663 * 10664 * This routine is the completion callback function to a Fabric Discover 10665 * (FDISC) ELS command. Since all the FDISC ELS commands are issued 10666 * single threaded, each FDISC completion callback function will reset 10667 * the discovery timer for all vports such that the timers will not get 10668 * unnecessary timeout. The function checks the FDISC IOCB status. If error 10669 * detected, the vport will be set to FC_VPORT_FAILED state. Otherwise,the 10670 * vport will set to FC_VPORT_ACTIVE state. It then checks whether the DID 10671 * assigned to the vport has been changed with the completion of the FDISC 10672 * command. If so, both RPI (Remote Port Index) and VPI (Virtual Port Index) 10673 * are unregistered from the HBA, and then the lpfc_register_new_vport() 10674 * routine is invoked to register new vport with the HBA. Otherwise, the 10675 * lpfc_do_scr_ns_plogi() routine is invoked to issue a PLOGI to the Name 10676 * Server for State Change Request (SCR). 10677 **/ 10678 static void 10679 lpfc_cmpl_els_fdisc(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb, 10680 struct lpfc_iocbq *rspiocb) 10681 { 10682 struct lpfc_vport *vport = cmdiocb->vport; 10683 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 10684 struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) cmdiocb->context1; 10685 struct lpfc_nodelist *np; 10686 struct lpfc_nodelist *next_np; 10687 IOCB_t *irsp = &rspiocb->iocb; 10688 struct lpfc_iocbq *piocb; 10689 struct lpfc_dmabuf *pcmd = cmdiocb->context2, *prsp; 10690 struct serv_parm *sp; 10691 uint8_t fabric_param_changed; 10692 10693 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, 10694 "0123 FDISC completes. x%x/x%x prevDID: x%x\n", 10695 irsp->ulpStatus, irsp->un.ulpWord[4], 10696 vport->fc_prevDID); 10697 /* Since all FDISCs are being single threaded, we 10698 * must reset the discovery timer for ALL vports 10699 * waiting to send FDISC when one completes. 10700 */ 10701 list_for_each_entry(piocb, &phba->fabric_iocb_list, list) { 10702 lpfc_set_disctmo(piocb->vport); 10703 } 10704 10705 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, 10706 "FDISC cmpl: status:x%x/x%x prevdid:x%x", 10707 irsp->ulpStatus, irsp->un.ulpWord[4], vport->fc_prevDID); 10708 10709 if (irsp->ulpStatus) { 10710 10711 if (lpfc_fabric_login_reqd(phba, cmdiocb, rspiocb)) { 10712 lpfc_retry_pport_discovery(phba); 10713 goto out; 10714 } 10715 10716 /* Check for retry */ 10717 if (lpfc_els_retry(phba, cmdiocb, rspiocb)) 10718 goto out; 10719 /* FDISC failed */ 10720 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 10721 "0126 FDISC failed. (x%x/x%x)\n", 10722 irsp->ulpStatus, irsp->un.ulpWord[4]); 10723 goto fdisc_failed; 10724 } 10725 spin_lock_irq(shost->host_lock); 10726 vport->fc_flag &= ~FC_VPORT_CVL_RCVD; 10727 vport->fc_flag &= ~FC_VPORT_LOGO_RCVD; 10728 vport->fc_flag |= FC_FABRIC; 10729 if (vport->phba->fc_topology == LPFC_TOPOLOGY_LOOP) 10730 vport->fc_flag |= FC_PUBLIC_LOOP; 10731 spin_unlock_irq(shost->host_lock); 10732 10733 vport->fc_myDID = irsp->un.ulpWord[4] & Mask_DID; 10734 lpfc_vport_set_state(vport, FC_VPORT_ACTIVE); 10735 prsp = list_get_first(&pcmd->list, struct lpfc_dmabuf, list); 10736 if (!prsp) 10737 goto out; 10738 sp = prsp->virt + sizeof(uint32_t); 10739 fabric_param_changed = lpfc_check_clean_addr_bit(vport, sp); 10740 memcpy(&vport->fabric_portname, &sp->portName, 10741 sizeof(struct lpfc_name)); 10742 memcpy(&vport->fabric_nodename, &sp->nodeName, 10743 sizeof(struct lpfc_name)); 10744 if (fabric_param_changed && 10745 !(vport->fc_flag & FC_VPORT_NEEDS_REG_VPI)) { 10746 /* If our NportID changed, we need to ensure all 10747 * remaining NPORTs get unreg_login'ed so we can 10748 * issue unreg_vpi. 10749 */ 10750 list_for_each_entry_safe(np, next_np, 10751 &vport->fc_nodes, nlp_listp) { 10752 if ((np->nlp_state != NLP_STE_NPR_NODE) || 10753 !(np->nlp_flag & NLP_NPR_ADISC)) 10754 continue; 10755 spin_lock_irq(&ndlp->lock); 10756 np->nlp_flag &= ~NLP_NPR_ADISC; 10757 spin_unlock_irq(&ndlp->lock); 10758 lpfc_unreg_rpi(vport, np); 10759 } 10760 lpfc_cleanup_pending_mbox(vport); 10761 10762 if (phba->sli_rev == LPFC_SLI_REV4) 10763 lpfc_sli4_unreg_all_rpis(vport); 10764 10765 lpfc_mbx_unreg_vpi(vport); 10766 spin_lock_irq(shost->host_lock); 10767 vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI; 10768 if (phba->sli_rev == LPFC_SLI_REV4) 10769 vport->fc_flag |= FC_VPORT_NEEDS_INIT_VPI; 10770 else 10771 vport->fc_flag |= FC_LOGO_RCVD_DID_CHNG; 10772 spin_unlock_irq(shost->host_lock); 10773 } else if ((phba->sli_rev == LPFC_SLI_REV4) && 10774 !(vport->fc_flag & FC_VPORT_NEEDS_REG_VPI)) { 10775 /* 10776 * Driver needs to re-reg VPI in order for f/w 10777 * to update the MAC address. 10778 */ 10779 lpfc_register_new_vport(phba, vport, ndlp); 10780 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE); 10781 goto out; 10782 } 10783 10784 if (vport->fc_flag & FC_VPORT_NEEDS_INIT_VPI) 10785 lpfc_issue_init_vpi(vport); 10786 else if (vport->fc_flag & FC_VPORT_NEEDS_REG_VPI) 10787 lpfc_register_new_vport(phba, vport, ndlp); 10788 else 10789 lpfc_do_scr_ns_plogi(phba, vport); 10790 10791 /* The FDISC completed successfully. Move the fabric ndlp to 10792 * UNMAPPED state and register with the transport. 10793 */ 10794 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE); 10795 goto out; 10796 10797 fdisc_failed: 10798 if (vport->fc_vport && 10799 (vport->fc_vport->vport_state != FC_VPORT_NO_FABRIC_RSCS)) 10800 lpfc_vport_set_state(vport, FC_VPORT_FAILED); 10801 /* Cancel discovery timer */ 10802 lpfc_can_disctmo(vport); 10803 out: 10804 lpfc_els_free_iocb(phba, cmdiocb); 10805 lpfc_nlp_put(ndlp); 10806 } 10807 10808 /** 10809 * lpfc_issue_els_fdisc - Issue a fdisc iocb command 10810 * @vport: pointer to a virtual N_Port data structure. 10811 * @ndlp: pointer to a node-list data structure. 10812 * @retry: number of retries to the command IOCB. 10813 * 10814 * This routine prepares and issues a Fabric Discover (FDISC) IOCB to 10815 * a remote node (@ndlp) off a @vport. It uses the lpfc_issue_fabric_iocb() 10816 * routine to issue the IOCB, which makes sure only one outstanding fabric 10817 * IOCB will be sent off HBA at any given time. 10818 * 10819 * Note that the ndlp reference count will be incremented by 1 for holding the 10820 * ndlp and the reference to ndlp will be stored into the context1 field of 10821 * the IOCB for the completion callback function to the FDISC ELS command. 10822 * 10823 * Return code 10824 * 0 - Successfully issued fdisc iocb command 10825 * 1 - Failed to issue fdisc iocb command 10826 **/ 10827 static int 10828 lpfc_issue_els_fdisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 10829 uint8_t retry) 10830 { 10831 struct lpfc_hba *phba = vport->phba; 10832 IOCB_t *icmd; 10833 struct lpfc_iocbq *elsiocb; 10834 struct serv_parm *sp; 10835 uint8_t *pcmd; 10836 uint16_t cmdsize; 10837 int did = ndlp->nlp_DID; 10838 int rc; 10839 10840 vport->port_state = LPFC_FDISC; 10841 vport->fc_myDID = 0; 10842 cmdsize = (sizeof(uint32_t) + sizeof(struct serv_parm)); 10843 elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp, did, 10844 ELS_CMD_FDISC); 10845 if (!elsiocb) { 10846 lpfc_vport_set_state(vport, FC_VPORT_FAILED); 10847 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 10848 "0255 Issue FDISC: no IOCB\n"); 10849 return 1; 10850 } 10851 10852 icmd = &elsiocb->iocb; 10853 icmd->un.elsreq64.myID = 0; 10854 icmd->un.elsreq64.fl = 1; 10855 10856 /* 10857 * SLI3 ports require a different context type value than SLI4. 10858 * Catch SLI3 ports here and override the prep. 10859 */ 10860 if (phba->sli_rev == LPFC_SLI_REV3) { 10861 icmd->ulpCt_h = 1; 10862 icmd->ulpCt_l = 0; 10863 } 10864 10865 pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt); 10866 *((uint32_t *) (pcmd)) = ELS_CMD_FDISC; 10867 pcmd += sizeof(uint32_t); /* CSP Word 1 */ 10868 memcpy(pcmd, &vport->phba->pport->fc_sparam, sizeof(struct serv_parm)); 10869 sp = (struct serv_parm *) pcmd; 10870 /* Setup CSPs accordingly for Fabric */ 10871 sp->cmn.e_d_tov = 0; 10872 sp->cmn.w2.r_a_tov = 0; 10873 sp->cmn.virtual_fabric_support = 0; 10874 sp->cls1.classValid = 0; 10875 sp->cls2.seqDelivery = 1; 10876 sp->cls3.seqDelivery = 1; 10877 10878 pcmd += sizeof(uint32_t); /* CSP Word 2 */ 10879 pcmd += sizeof(uint32_t); /* CSP Word 3 */ 10880 pcmd += sizeof(uint32_t); /* CSP Word 4 */ 10881 pcmd += sizeof(uint32_t); /* Port Name */ 10882 memcpy(pcmd, &vport->fc_portname, 8); 10883 pcmd += sizeof(uint32_t); /* Node Name */ 10884 pcmd += sizeof(uint32_t); /* Node Name */ 10885 memcpy(pcmd, &vport->fc_nodename, 8); 10886 sp->cmn.valid_vendor_ver_level = 0; 10887 memset(sp->un.vendorVersion, 0, sizeof(sp->un.vendorVersion)); 10888 lpfc_set_disctmo(vport); 10889 10890 phba->fc_stat.elsXmitFDISC++; 10891 elsiocb->iocb_cmpl = lpfc_cmpl_els_fdisc; 10892 10893 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, 10894 "Issue FDISC: did:x%x", 10895 did, 0, 0); 10896 10897 elsiocb->context1 = lpfc_nlp_get(ndlp); 10898 if (!elsiocb->context1) { 10899 lpfc_els_free_iocb(phba, elsiocb); 10900 goto err_out; 10901 } 10902 10903 rc = lpfc_issue_fabric_iocb(phba, elsiocb); 10904 if (rc == IOCB_ERROR) { 10905 lpfc_els_free_iocb(phba, elsiocb); 10906 lpfc_nlp_put(ndlp); 10907 goto err_out; 10908 } 10909 10910 lpfc_vport_set_state(vport, FC_VPORT_INITIALIZING); 10911 return 0; 10912 10913 err_out: 10914 lpfc_vport_set_state(vport, FC_VPORT_FAILED); 10915 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 10916 "0256 Issue FDISC: Cannot send IOCB\n"); 10917 return 1; 10918 } 10919 10920 /** 10921 * lpfc_cmpl_els_npiv_logo - Completion function with vport logo 10922 * @phba: pointer to lpfc hba data structure. 10923 * @cmdiocb: pointer to lpfc command iocb data structure. 10924 * @rspiocb: pointer to lpfc response iocb data structure. 10925 * 10926 * This routine is the completion callback function to the issuing of a LOGO 10927 * ELS command off a vport. It frees the command IOCB and then decrement the 10928 * reference count held on ndlp for this completion function, indicating that 10929 * the reference to the ndlp is no long needed. Note that the 10930 * lpfc_els_free_iocb() routine decrements the ndlp reference held for this 10931 * callback function and an additional explicit ndlp reference decrementation 10932 * will trigger the actual release of the ndlp. 10933 **/ 10934 static void 10935 lpfc_cmpl_els_npiv_logo(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb, 10936 struct lpfc_iocbq *rspiocb) 10937 { 10938 struct lpfc_vport *vport = cmdiocb->vport; 10939 IOCB_t *irsp; 10940 struct lpfc_nodelist *ndlp; 10941 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 10942 10943 ndlp = (struct lpfc_nodelist *)cmdiocb->context1; 10944 irsp = &rspiocb->iocb; 10945 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, 10946 "LOGO npiv cmpl: status:x%x/x%x did:x%x", 10947 irsp->ulpStatus, irsp->un.ulpWord[4], irsp->un.rcvels.remoteID); 10948 10949 /* NPIV LOGO completes to NPort <nlp_DID> */ 10950 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, 10951 "2928 NPIV LOGO completes to NPort x%x " 10952 "Data: x%x x%x x%x x%x x%x x%x x%x\n", 10953 ndlp->nlp_DID, irsp->ulpStatus, irsp->un.ulpWord[4], 10954 irsp->ulpTimeout, vport->num_disc_nodes, 10955 kref_read(&ndlp->kref), ndlp->nlp_flag, 10956 ndlp->fc4_xpt_flags); 10957 10958 if (irsp->ulpStatus == IOSTAT_SUCCESS) { 10959 spin_lock_irq(shost->host_lock); 10960 vport->fc_flag &= ~FC_NDISC_ACTIVE; 10961 vport->fc_flag &= ~FC_FABRIC; 10962 spin_unlock_irq(shost->host_lock); 10963 lpfc_can_disctmo(vport); 10964 } 10965 10966 /* Safe to release resources now. */ 10967 lpfc_els_free_iocb(phba, cmdiocb); 10968 lpfc_nlp_put(ndlp); 10969 vport->unreg_vpi_cmpl = VPORT_ERROR; 10970 } 10971 10972 /** 10973 * lpfc_issue_els_npiv_logo - Issue a logo off a vport 10974 * @vport: pointer to a virtual N_Port data structure. 10975 * @ndlp: pointer to a node-list data structure. 10976 * 10977 * This routine issues a LOGO ELS command to an @ndlp off a @vport. 10978 * 10979 * Note that the ndlp reference count will be incremented by 1 for holding the 10980 * ndlp and the reference to ndlp will be stored into the context1 field of 10981 * the IOCB for the completion callback function to the LOGO ELS command. 10982 * 10983 * Return codes 10984 * 0 - Successfully issued logo off the @vport 10985 * 1 - Failed to issue logo off the @vport 10986 **/ 10987 int 10988 lpfc_issue_els_npiv_logo(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) 10989 { 10990 int rc = 0; 10991 struct lpfc_hba *phba = vport->phba; 10992 struct lpfc_iocbq *elsiocb; 10993 uint8_t *pcmd; 10994 uint16_t cmdsize; 10995 10996 cmdsize = 2 * sizeof(uint32_t) + sizeof(struct lpfc_name); 10997 elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, 0, ndlp, ndlp->nlp_DID, 10998 ELS_CMD_LOGO); 10999 if (!elsiocb) 11000 return 1; 11001 11002 pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt); 11003 *((uint32_t *) (pcmd)) = ELS_CMD_LOGO; 11004 pcmd += sizeof(uint32_t); 11005 11006 /* Fill in LOGO payload */ 11007 *((uint32_t *) (pcmd)) = be32_to_cpu(vport->fc_myDID); 11008 pcmd += sizeof(uint32_t); 11009 memcpy(pcmd, &vport->fc_portname, sizeof(struct lpfc_name)); 11010 11011 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, 11012 "Issue LOGO npiv did:x%x flg:x%x", 11013 ndlp->nlp_DID, ndlp->nlp_flag, 0); 11014 11015 elsiocb->iocb_cmpl = lpfc_cmpl_els_npiv_logo; 11016 spin_lock_irq(&ndlp->lock); 11017 ndlp->nlp_flag |= NLP_LOGO_SND; 11018 spin_unlock_irq(&ndlp->lock); 11019 elsiocb->context1 = lpfc_nlp_get(ndlp); 11020 if (!elsiocb->context1) { 11021 lpfc_els_free_iocb(phba, elsiocb); 11022 goto err; 11023 } 11024 11025 rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0); 11026 if (rc == IOCB_ERROR) { 11027 lpfc_els_free_iocb(phba, elsiocb); 11028 lpfc_nlp_put(ndlp); 11029 goto err; 11030 } 11031 return 0; 11032 11033 err: 11034 spin_lock_irq(&ndlp->lock); 11035 ndlp->nlp_flag &= ~NLP_LOGO_SND; 11036 spin_unlock_irq(&ndlp->lock); 11037 return 1; 11038 } 11039 11040 /** 11041 * lpfc_fabric_block_timeout - Handler function to the fabric block timer 11042 * @t: timer context used to obtain the lpfc hba. 11043 * 11044 * This routine is invoked by the fabric iocb block timer after 11045 * timeout. It posts the fabric iocb block timeout event by setting the 11046 * WORKER_FABRIC_BLOCK_TMO bit to work port event bitmap and then invokes 11047 * lpfc_worker_wake_up() routine to wake up the worker thread. It is for 11048 * the worker thread to invoke the lpfc_unblock_fabric_iocbs() on the 11049 * posted event WORKER_FABRIC_BLOCK_TMO. 11050 **/ 11051 void 11052 lpfc_fabric_block_timeout(struct timer_list *t) 11053 { 11054 struct lpfc_hba *phba = from_timer(phba, t, fabric_block_timer); 11055 unsigned long iflags; 11056 uint32_t tmo_posted; 11057 11058 spin_lock_irqsave(&phba->pport->work_port_lock, iflags); 11059 tmo_posted = phba->pport->work_port_events & WORKER_FABRIC_BLOCK_TMO; 11060 if (!tmo_posted) 11061 phba->pport->work_port_events |= WORKER_FABRIC_BLOCK_TMO; 11062 spin_unlock_irqrestore(&phba->pport->work_port_lock, iflags); 11063 11064 if (!tmo_posted) 11065 lpfc_worker_wake_up(phba); 11066 return; 11067 } 11068 11069 /** 11070 * lpfc_resume_fabric_iocbs - Issue a fabric iocb from driver internal list 11071 * @phba: pointer to lpfc hba data structure. 11072 * 11073 * This routine issues one fabric iocb from the driver internal list to 11074 * the HBA. It first checks whether it's ready to issue one fabric iocb to 11075 * the HBA (whether there is no outstanding fabric iocb). If so, it shall 11076 * remove one pending fabric iocb from the driver internal list and invokes 11077 * lpfc_sli_issue_iocb() routine to send the fabric iocb to the HBA. 11078 **/ 11079 static void 11080 lpfc_resume_fabric_iocbs(struct lpfc_hba *phba) 11081 { 11082 struct lpfc_iocbq *iocb; 11083 unsigned long iflags; 11084 int ret; 11085 IOCB_t *cmd; 11086 11087 repeat: 11088 iocb = NULL; 11089 spin_lock_irqsave(&phba->hbalock, iflags); 11090 /* Post any pending iocb to the SLI layer */ 11091 if (atomic_read(&phba->fabric_iocb_count) == 0) { 11092 list_remove_head(&phba->fabric_iocb_list, iocb, typeof(*iocb), 11093 list); 11094 if (iocb) 11095 /* Increment fabric iocb count to hold the position */ 11096 atomic_inc(&phba->fabric_iocb_count); 11097 } 11098 spin_unlock_irqrestore(&phba->hbalock, iflags); 11099 if (iocb) { 11100 iocb->fabric_iocb_cmpl = iocb->iocb_cmpl; 11101 iocb->iocb_cmpl = lpfc_cmpl_fabric_iocb; 11102 iocb->iocb_flag |= LPFC_IO_FABRIC; 11103 11104 lpfc_debugfs_disc_trc(iocb->vport, LPFC_DISC_TRC_ELS_CMD, 11105 "Fabric sched1: ste:x%x", 11106 iocb->vport->port_state, 0, 0); 11107 11108 ret = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, iocb, 0); 11109 11110 if (ret == IOCB_ERROR) { 11111 iocb->iocb_cmpl = iocb->fabric_iocb_cmpl; 11112 iocb->fabric_iocb_cmpl = NULL; 11113 iocb->iocb_flag &= ~LPFC_IO_FABRIC; 11114 cmd = &iocb->iocb; 11115 cmd->ulpStatus = IOSTAT_LOCAL_REJECT; 11116 cmd->un.ulpWord[4] = IOERR_SLI_ABORTED; 11117 iocb->iocb_cmpl(phba, iocb, iocb); 11118 11119 atomic_dec(&phba->fabric_iocb_count); 11120 goto repeat; 11121 } 11122 } 11123 } 11124 11125 /** 11126 * lpfc_unblock_fabric_iocbs - Unblock issuing fabric iocb command 11127 * @phba: pointer to lpfc hba data structure. 11128 * 11129 * This routine unblocks the issuing fabric iocb command. The function 11130 * will clear the fabric iocb block bit and then invoke the routine 11131 * lpfc_resume_fabric_iocbs() to issue one of the pending fabric iocb 11132 * from the driver internal fabric iocb list. 11133 **/ 11134 void 11135 lpfc_unblock_fabric_iocbs(struct lpfc_hba *phba) 11136 { 11137 clear_bit(FABRIC_COMANDS_BLOCKED, &phba->bit_flags); 11138 11139 lpfc_resume_fabric_iocbs(phba); 11140 return; 11141 } 11142 11143 /** 11144 * lpfc_block_fabric_iocbs - Block issuing fabric iocb command 11145 * @phba: pointer to lpfc hba data structure. 11146 * 11147 * This routine blocks the issuing fabric iocb for a specified amount of 11148 * time (currently 100 ms). This is done by set the fabric iocb block bit 11149 * and set up a timeout timer for 100ms. When the block bit is set, no more 11150 * fabric iocb will be issued out of the HBA. 11151 **/ 11152 static void 11153 lpfc_block_fabric_iocbs(struct lpfc_hba *phba) 11154 { 11155 int blocked; 11156 11157 blocked = test_and_set_bit(FABRIC_COMANDS_BLOCKED, &phba->bit_flags); 11158 /* Start a timer to unblock fabric iocbs after 100ms */ 11159 if (!blocked) 11160 mod_timer(&phba->fabric_block_timer, 11161 jiffies + msecs_to_jiffies(100)); 11162 11163 return; 11164 } 11165 11166 /** 11167 * lpfc_cmpl_fabric_iocb - Completion callback function for fabric iocb 11168 * @phba: pointer to lpfc hba data structure. 11169 * @cmdiocb: pointer to lpfc command iocb data structure. 11170 * @rspiocb: pointer to lpfc response iocb data structure. 11171 * 11172 * This routine is the callback function that is put to the fabric iocb's 11173 * callback function pointer (iocb->iocb_cmpl). The original iocb's callback 11174 * function pointer has been stored in iocb->fabric_iocb_cmpl. This callback 11175 * function first restores and invokes the original iocb's callback function 11176 * and then invokes the lpfc_resume_fabric_iocbs() routine to issue the next 11177 * fabric bound iocb from the driver internal fabric iocb list onto the wire. 11178 **/ 11179 static void 11180 lpfc_cmpl_fabric_iocb(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb, 11181 struct lpfc_iocbq *rspiocb) 11182 { 11183 struct ls_rjt stat; 11184 11185 BUG_ON((cmdiocb->iocb_flag & LPFC_IO_FABRIC) != LPFC_IO_FABRIC); 11186 11187 switch (rspiocb->iocb.ulpStatus) { 11188 case IOSTAT_NPORT_RJT: 11189 case IOSTAT_FABRIC_RJT: 11190 if (rspiocb->iocb.un.ulpWord[4] & RJT_UNAVAIL_TEMP) { 11191 lpfc_block_fabric_iocbs(phba); 11192 } 11193 break; 11194 11195 case IOSTAT_NPORT_BSY: 11196 case IOSTAT_FABRIC_BSY: 11197 lpfc_block_fabric_iocbs(phba); 11198 break; 11199 11200 case IOSTAT_LS_RJT: 11201 stat.un.lsRjtError = 11202 be32_to_cpu(rspiocb->iocb.un.ulpWord[4]); 11203 if ((stat.un.b.lsRjtRsnCode == LSRJT_UNABLE_TPC) || 11204 (stat.un.b.lsRjtRsnCode == LSRJT_LOGICAL_BSY)) 11205 lpfc_block_fabric_iocbs(phba); 11206 break; 11207 } 11208 11209 BUG_ON(atomic_read(&phba->fabric_iocb_count) == 0); 11210 11211 cmdiocb->iocb_cmpl = cmdiocb->fabric_iocb_cmpl; 11212 cmdiocb->fabric_iocb_cmpl = NULL; 11213 cmdiocb->iocb_flag &= ~LPFC_IO_FABRIC; 11214 cmdiocb->iocb_cmpl(phba, cmdiocb, rspiocb); 11215 11216 atomic_dec(&phba->fabric_iocb_count); 11217 if (!test_bit(FABRIC_COMANDS_BLOCKED, &phba->bit_flags)) { 11218 /* Post any pending iocbs to HBA */ 11219 lpfc_resume_fabric_iocbs(phba); 11220 } 11221 } 11222 11223 /** 11224 * lpfc_issue_fabric_iocb - Issue a fabric iocb command 11225 * @phba: pointer to lpfc hba data structure. 11226 * @iocb: pointer to lpfc command iocb data structure. 11227 * 11228 * This routine is used as the top-level API for issuing a fabric iocb command 11229 * such as FLOGI and FDISC. To accommodate certain switch fabric, this driver 11230 * function makes sure that only one fabric bound iocb will be outstanding at 11231 * any given time. As such, this function will first check to see whether there 11232 * is already an outstanding fabric iocb on the wire. If so, it will put the 11233 * newly issued iocb onto the driver internal fabric iocb list, waiting to be 11234 * issued later. Otherwise, it will issue the iocb on the wire and update the 11235 * fabric iocb count it indicate that there is one fabric iocb on the wire. 11236 * 11237 * Note, this implementation has a potential sending out fabric IOCBs out of 11238 * order. The problem is caused by the construction of the "ready" boolen does 11239 * not include the condition that the internal fabric IOCB list is empty. As 11240 * such, it is possible a fabric IOCB issued by this routine might be "jump" 11241 * ahead of the fabric IOCBs in the internal list. 11242 * 11243 * Return code 11244 * IOCB_SUCCESS - either fabric iocb put on the list or issued successfully 11245 * IOCB_ERROR - failed to issue fabric iocb 11246 **/ 11247 static int 11248 lpfc_issue_fabric_iocb(struct lpfc_hba *phba, struct lpfc_iocbq *iocb) 11249 { 11250 unsigned long iflags; 11251 int ready; 11252 int ret; 11253 11254 BUG_ON(atomic_read(&phba->fabric_iocb_count) > 1); 11255 11256 spin_lock_irqsave(&phba->hbalock, iflags); 11257 ready = atomic_read(&phba->fabric_iocb_count) == 0 && 11258 !test_bit(FABRIC_COMANDS_BLOCKED, &phba->bit_flags); 11259 11260 if (ready) 11261 /* Increment fabric iocb count to hold the position */ 11262 atomic_inc(&phba->fabric_iocb_count); 11263 spin_unlock_irqrestore(&phba->hbalock, iflags); 11264 if (ready) { 11265 iocb->fabric_iocb_cmpl = iocb->iocb_cmpl; 11266 iocb->iocb_cmpl = lpfc_cmpl_fabric_iocb; 11267 iocb->iocb_flag |= LPFC_IO_FABRIC; 11268 11269 lpfc_debugfs_disc_trc(iocb->vport, LPFC_DISC_TRC_ELS_CMD, 11270 "Fabric sched2: ste:x%x", 11271 iocb->vport->port_state, 0, 0); 11272 11273 ret = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, iocb, 0); 11274 11275 if (ret == IOCB_ERROR) { 11276 iocb->iocb_cmpl = iocb->fabric_iocb_cmpl; 11277 iocb->fabric_iocb_cmpl = NULL; 11278 iocb->iocb_flag &= ~LPFC_IO_FABRIC; 11279 atomic_dec(&phba->fabric_iocb_count); 11280 } 11281 } else { 11282 spin_lock_irqsave(&phba->hbalock, iflags); 11283 list_add_tail(&iocb->list, &phba->fabric_iocb_list); 11284 spin_unlock_irqrestore(&phba->hbalock, iflags); 11285 ret = IOCB_SUCCESS; 11286 } 11287 return ret; 11288 } 11289 11290 /** 11291 * lpfc_fabric_abort_vport - Abort a vport's iocbs from driver fabric iocb list 11292 * @vport: pointer to a virtual N_Port data structure. 11293 * 11294 * This routine aborts all the IOCBs associated with a @vport from the 11295 * driver internal fabric IOCB list. The list contains fabric IOCBs to be 11296 * issued to the ELS IOCB ring. This abort function walks the fabric IOCB 11297 * list, removes each IOCB associated with the @vport off the list, set the 11298 * status field to IOSTAT_LOCAL_REJECT, and invokes the callback function 11299 * associated with the IOCB. 11300 **/ 11301 static void lpfc_fabric_abort_vport(struct lpfc_vport *vport) 11302 { 11303 LIST_HEAD(completions); 11304 struct lpfc_hba *phba = vport->phba; 11305 struct lpfc_iocbq *tmp_iocb, *piocb; 11306 11307 spin_lock_irq(&phba->hbalock); 11308 list_for_each_entry_safe(piocb, tmp_iocb, &phba->fabric_iocb_list, 11309 list) { 11310 11311 if (piocb->vport != vport) 11312 continue; 11313 11314 list_move_tail(&piocb->list, &completions); 11315 } 11316 spin_unlock_irq(&phba->hbalock); 11317 11318 /* Cancel all the IOCBs from the completions list */ 11319 lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT, 11320 IOERR_SLI_ABORTED); 11321 } 11322 11323 /** 11324 * lpfc_fabric_abort_nport - Abort a ndlp's iocbs from driver fabric iocb list 11325 * @ndlp: pointer to a node-list data structure. 11326 * 11327 * This routine aborts all the IOCBs associated with an @ndlp from the 11328 * driver internal fabric IOCB list. The list contains fabric IOCBs to be 11329 * issued to the ELS IOCB ring. This abort function walks the fabric IOCB 11330 * list, removes each IOCB associated with the @ndlp off the list, set the 11331 * status field to IOSTAT_LOCAL_REJECT, and invokes the callback function 11332 * associated with the IOCB. 11333 **/ 11334 void lpfc_fabric_abort_nport(struct lpfc_nodelist *ndlp) 11335 { 11336 LIST_HEAD(completions); 11337 struct lpfc_hba *phba = ndlp->phba; 11338 struct lpfc_iocbq *tmp_iocb, *piocb; 11339 struct lpfc_sli_ring *pring; 11340 11341 pring = lpfc_phba_elsring(phba); 11342 11343 if (unlikely(!pring)) 11344 return; 11345 11346 spin_lock_irq(&phba->hbalock); 11347 list_for_each_entry_safe(piocb, tmp_iocb, &phba->fabric_iocb_list, 11348 list) { 11349 if ((lpfc_check_sli_ndlp(phba, pring, piocb, ndlp))) { 11350 11351 list_move_tail(&piocb->list, &completions); 11352 } 11353 } 11354 spin_unlock_irq(&phba->hbalock); 11355 11356 /* Cancel all the IOCBs from the completions list */ 11357 lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT, 11358 IOERR_SLI_ABORTED); 11359 } 11360 11361 /** 11362 * lpfc_fabric_abort_hba - Abort all iocbs on driver fabric iocb list 11363 * @phba: pointer to lpfc hba data structure. 11364 * 11365 * This routine aborts all the IOCBs currently on the driver internal 11366 * fabric IOCB list. The list contains fabric IOCBs to be issued to the ELS 11367 * IOCB ring. This function takes the entire IOCB list off the fabric IOCB 11368 * list, removes IOCBs off the list, set the status field to 11369 * IOSTAT_LOCAL_REJECT, and invokes the callback function associated with 11370 * the IOCB. 11371 **/ 11372 void lpfc_fabric_abort_hba(struct lpfc_hba *phba) 11373 { 11374 LIST_HEAD(completions); 11375 11376 spin_lock_irq(&phba->hbalock); 11377 list_splice_init(&phba->fabric_iocb_list, &completions); 11378 spin_unlock_irq(&phba->hbalock); 11379 11380 /* Cancel all the IOCBs from the completions list */ 11381 lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT, 11382 IOERR_SLI_ABORTED); 11383 } 11384 11385 /** 11386 * lpfc_sli4_vport_delete_els_xri_aborted -Remove all ndlp references for vport 11387 * @vport: pointer to lpfc vport data structure. 11388 * 11389 * This routine is invoked by the vport cleanup for deletions and the cleanup 11390 * for an ndlp on removal. 11391 **/ 11392 void 11393 lpfc_sli4_vport_delete_els_xri_aborted(struct lpfc_vport *vport) 11394 { 11395 struct lpfc_hba *phba = vport->phba; 11396 struct lpfc_sglq *sglq_entry = NULL, *sglq_next = NULL; 11397 struct lpfc_nodelist *ndlp = NULL; 11398 unsigned long iflag = 0; 11399 11400 spin_lock_irqsave(&phba->sli4_hba.sgl_list_lock, iflag); 11401 list_for_each_entry_safe(sglq_entry, sglq_next, 11402 &phba->sli4_hba.lpfc_abts_els_sgl_list, list) { 11403 if (sglq_entry->ndlp && sglq_entry->ndlp->vport == vport) { 11404 lpfc_nlp_put(sglq_entry->ndlp); 11405 ndlp = sglq_entry->ndlp; 11406 sglq_entry->ndlp = NULL; 11407 11408 /* If the xri on the abts_els_sgl list is for the Fport 11409 * node and the vport is unloading, the xri aborted wcqe 11410 * likely isn't coming back. Just release the sgl. 11411 */ 11412 if ((vport->load_flag & FC_UNLOADING) && 11413 ndlp->nlp_DID == Fabric_DID) { 11414 list_del(&sglq_entry->list); 11415 sglq_entry->state = SGL_FREED; 11416 list_add_tail(&sglq_entry->list, 11417 &phba->sli4_hba.lpfc_els_sgl_list); 11418 } 11419 } 11420 } 11421 spin_unlock_irqrestore(&phba->sli4_hba.sgl_list_lock, iflag); 11422 return; 11423 } 11424 11425 /** 11426 * lpfc_sli4_els_xri_aborted - Slow-path process of els xri abort 11427 * @phba: pointer to lpfc hba data structure. 11428 * @axri: pointer to the els xri abort wcqe structure. 11429 * 11430 * This routine is invoked by the worker thread to process a SLI4 slow-path 11431 * ELS aborted xri. 11432 **/ 11433 void 11434 lpfc_sli4_els_xri_aborted(struct lpfc_hba *phba, 11435 struct sli4_wcqe_xri_aborted *axri) 11436 { 11437 uint16_t xri = bf_get(lpfc_wcqe_xa_xri, axri); 11438 uint16_t rxid = bf_get(lpfc_wcqe_xa_remote_xid, axri); 11439 uint16_t lxri = 0; 11440 11441 struct lpfc_sglq *sglq_entry = NULL, *sglq_next = NULL; 11442 unsigned long iflag = 0; 11443 struct lpfc_nodelist *ndlp; 11444 struct lpfc_sli_ring *pring; 11445 11446 pring = lpfc_phba_elsring(phba); 11447 11448 spin_lock_irqsave(&phba->sli4_hba.sgl_list_lock, iflag); 11449 list_for_each_entry_safe(sglq_entry, sglq_next, 11450 &phba->sli4_hba.lpfc_abts_els_sgl_list, list) { 11451 if (sglq_entry->sli4_xritag == xri) { 11452 list_del(&sglq_entry->list); 11453 ndlp = sglq_entry->ndlp; 11454 sglq_entry->ndlp = NULL; 11455 list_add_tail(&sglq_entry->list, 11456 &phba->sli4_hba.lpfc_els_sgl_list); 11457 sglq_entry->state = SGL_FREED; 11458 spin_unlock_irqrestore(&phba->sli4_hba.sgl_list_lock, 11459 iflag); 11460 11461 if (ndlp) { 11462 lpfc_set_rrq_active(phba, ndlp, 11463 sglq_entry->sli4_lxritag, 11464 rxid, 1); 11465 lpfc_nlp_put(ndlp); 11466 } 11467 11468 /* Check if TXQ queue needs to be serviced */ 11469 if (pring && !list_empty(&pring->txq)) 11470 lpfc_worker_wake_up(phba); 11471 return; 11472 } 11473 } 11474 spin_unlock_irqrestore(&phba->sli4_hba.sgl_list_lock, iflag); 11475 lxri = lpfc_sli4_xri_inrange(phba, xri); 11476 if (lxri == NO_XRI) 11477 return; 11478 11479 spin_lock_irqsave(&phba->hbalock, iflag); 11480 sglq_entry = __lpfc_get_active_sglq(phba, lxri); 11481 if (!sglq_entry || (sglq_entry->sli4_xritag != xri)) { 11482 spin_unlock_irqrestore(&phba->hbalock, iflag); 11483 return; 11484 } 11485 sglq_entry->state = SGL_XRI_ABORTED; 11486 spin_unlock_irqrestore(&phba->hbalock, iflag); 11487 return; 11488 } 11489 11490 /* lpfc_sli_abts_recover_port - Recover a port that failed a BLS_ABORT req. 11491 * @vport: pointer to virtual port object. 11492 * @ndlp: nodelist pointer for the impacted node. 11493 * 11494 * The driver calls this routine in response to an SLI4 XRI ABORT CQE 11495 * or an SLI3 ASYNC_STATUS_CN event from the port. For either event, 11496 * the driver is required to send a LOGO to the remote node before it 11497 * attempts to recover its login to the remote node. 11498 */ 11499 void 11500 lpfc_sli_abts_recover_port(struct lpfc_vport *vport, 11501 struct lpfc_nodelist *ndlp) 11502 { 11503 struct Scsi_Host *shost; 11504 struct lpfc_hba *phba; 11505 unsigned long flags = 0; 11506 11507 shost = lpfc_shost_from_vport(vport); 11508 phba = vport->phba; 11509 if (ndlp->nlp_state != NLP_STE_MAPPED_NODE) { 11510 lpfc_printf_log(phba, KERN_INFO, 11511 LOG_SLI, "3093 No rport recovery needed. " 11512 "rport in state 0x%x\n", ndlp->nlp_state); 11513 return; 11514 } 11515 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 11516 "3094 Start rport recovery on shost id 0x%x " 11517 "fc_id 0x%06x vpi 0x%x rpi 0x%x state 0x%x " 11518 "flags 0x%x\n", 11519 shost->host_no, ndlp->nlp_DID, 11520 vport->vpi, ndlp->nlp_rpi, ndlp->nlp_state, 11521 ndlp->nlp_flag); 11522 /* 11523 * The rport is not responding. Remove the FCP-2 flag to prevent 11524 * an ADISC in the follow-up recovery code. 11525 */ 11526 spin_lock_irqsave(&ndlp->lock, flags); 11527 ndlp->nlp_fcp_info &= ~NLP_FCP_2_DEVICE; 11528 ndlp->nlp_flag |= NLP_ISSUE_LOGO; 11529 spin_unlock_irqrestore(&ndlp->lock, flags); 11530 lpfc_unreg_rpi(vport, ndlp); 11531 } 11532 11533 static void lpfc_init_cs_ctl_bitmap(struct lpfc_vport *vport) 11534 { 11535 bitmap_zero(vport->vmid_priority_range, LPFC_VMID_MAX_PRIORITY_RANGE); 11536 } 11537 11538 static void 11539 lpfc_vmid_set_cs_ctl_range(struct lpfc_vport *vport, u32 min, u32 max) 11540 { 11541 u32 i; 11542 11543 if ((min > max) || (max > LPFC_VMID_MAX_PRIORITY_RANGE)) 11544 return; 11545 11546 for (i = min; i <= max; i++) 11547 set_bit(i, vport->vmid_priority_range); 11548 } 11549 11550 static void lpfc_vmid_put_cs_ctl(struct lpfc_vport *vport, u32 ctcl_vmid) 11551 { 11552 set_bit(ctcl_vmid, vport->vmid_priority_range); 11553 } 11554 11555 u32 lpfc_vmid_get_cs_ctl(struct lpfc_vport *vport) 11556 { 11557 u32 i; 11558 11559 i = find_first_bit(vport->vmid_priority_range, 11560 LPFC_VMID_MAX_PRIORITY_RANGE); 11561 11562 if (i == LPFC_VMID_MAX_PRIORITY_RANGE) 11563 return 0; 11564 11565 clear_bit(i, vport->vmid_priority_range); 11566 return i; 11567 } 11568 11569 #define MAX_PRIORITY_DESC 255 11570 11571 static void 11572 lpfc_cmpl_els_qfpa(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb, 11573 struct lpfc_iocbq *rspiocb) 11574 { 11575 struct lpfc_vport *vport = cmdiocb->vport; 11576 struct priority_range_desc *desc; 11577 struct lpfc_dmabuf *prsp = NULL; 11578 struct lpfc_vmid_priority_range *vmid_range = NULL; 11579 u32 *data; 11580 struct lpfc_dmabuf *dmabuf = cmdiocb->context2; 11581 IOCB_t *irsp = &rspiocb->iocb; 11582 u8 *pcmd, max_desc; 11583 u32 len, i; 11584 struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *)cmdiocb->context1; 11585 11586 prsp = list_get_first(&dmabuf->list, struct lpfc_dmabuf, list); 11587 if (!prsp) 11588 goto out; 11589 11590 pcmd = prsp->virt; 11591 data = (u32 *)pcmd; 11592 if (data[0] == ELS_CMD_LS_RJT) { 11593 lpfc_printf_vlog(vport, KERN_WARNING, LOG_SLI, 11594 "3277 QFPA LS_RJT x%x x%x\n", 11595 data[0], data[1]); 11596 goto out; 11597 } 11598 if (irsp->ulpStatus) { 11599 lpfc_printf_vlog(vport, KERN_ERR, LOG_SLI, 11600 "6529 QFPA failed with status x%x x%x\n", 11601 irsp->ulpStatus, irsp->un.ulpWord[4]); 11602 goto out; 11603 } 11604 11605 if (!vport->qfpa_res) { 11606 max_desc = FCELSSIZE / sizeof(*vport->qfpa_res); 11607 vport->qfpa_res = kcalloc(max_desc, sizeof(*vport->qfpa_res), 11608 GFP_KERNEL); 11609 if (!vport->qfpa_res) 11610 goto out; 11611 } 11612 11613 len = *((u32 *)(pcmd + 4)); 11614 len = be32_to_cpu(len); 11615 memcpy(vport->qfpa_res, pcmd, len + 8); 11616 len = len / LPFC_PRIORITY_RANGE_DESC_SIZE; 11617 11618 desc = (struct priority_range_desc *)(pcmd + 8); 11619 vmid_range = vport->vmid_priority.vmid_range; 11620 if (!vmid_range) { 11621 vmid_range = kcalloc(MAX_PRIORITY_DESC, sizeof(*vmid_range), 11622 GFP_KERNEL); 11623 if (!vmid_range) { 11624 kfree(vport->qfpa_res); 11625 goto out; 11626 } 11627 vport->vmid_priority.vmid_range = vmid_range; 11628 } 11629 vport->vmid_priority.num_descriptors = len; 11630 11631 for (i = 0; i < len; i++, vmid_range++, desc++) { 11632 lpfc_printf_vlog(vport, KERN_DEBUG, LOG_ELS, 11633 "6539 vmid values low=%d, high=%d, qos=%d, " 11634 "local ve id=%d\n", desc->lo_range, 11635 desc->hi_range, desc->qos_priority, 11636 desc->local_ve_id); 11637 11638 vmid_range->low = desc->lo_range << 1; 11639 if (desc->local_ve_id == QFPA_ODD_ONLY) 11640 vmid_range->low++; 11641 if (desc->qos_priority) 11642 vport->vmid_flag |= LPFC_VMID_QOS_ENABLED; 11643 vmid_range->qos = desc->qos_priority; 11644 11645 vmid_range->high = desc->hi_range << 1; 11646 if ((desc->local_ve_id == QFPA_ODD_ONLY) || 11647 (desc->local_ve_id == QFPA_EVEN_ODD)) 11648 vmid_range->high++; 11649 } 11650 lpfc_init_cs_ctl_bitmap(vport); 11651 for (i = 0; i < vport->vmid_priority.num_descriptors; i++) { 11652 lpfc_vmid_set_cs_ctl_range(vport, 11653 vport->vmid_priority.vmid_range[i].low, 11654 vport->vmid_priority.vmid_range[i].high); 11655 } 11656 11657 vport->vmid_flag |= LPFC_VMID_QFPA_CMPL; 11658 out: 11659 lpfc_els_free_iocb(phba, cmdiocb); 11660 lpfc_nlp_put(ndlp); 11661 } 11662 11663 int lpfc_issue_els_qfpa(struct lpfc_vport *vport) 11664 { 11665 struct lpfc_hba *phba = vport->phba; 11666 struct lpfc_nodelist *ndlp; 11667 struct lpfc_iocbq *elsiocb; 11668 u8 *pcmd; 11669 int ret; 11670 11671 ndlp = lpfc_findnode_did(phba->pport, Fabric_DID); 11672 if (!ndlp || ndlp->nlp_state != NLP_STE_UNMAPPED_NODE) 11673 return -ENXIO; 11674 11675 elsiocb = lpfc_prep_els_iocb(vport, 1, LPFC_QFPA_SIZE, 2, ndlp, 11676 ndlp->nlp_DID, ELS_CMD_QFPA); 11677 if (!elsiocb) 11678 return -ENOMEM; 11679 11680 pcmd = (u8 *)(((struct lpfc_dmabuf *)elsiocb->context2)->virt); 11681 11682 *((u32 *)(pcmd)) = ELS_CMD_QFPA; 11683 pcmd += 4; 11684 11685 elsiocb->iocb_cmpl = lpfc_cmpl_els_qfpa; 11686 11687 elsiocb->context1 = lpfc_nlp_get(ndlp); 11688 if (!elsiocb->context1) { 11689 lpfc_els_free_iocb(vport->phba, elsiocb); 11690 return -ENXIO; 11691 } 11692 11693 ret = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 2); 11694 if (ret != IOCB_SUCCESS) { 11695 lpfc_els_free_iocb(phba, elsiocb); 11696 lpfc_nlp_put(ndlp); 11697 return -EIO; 11698 } 11699 vport->vmid_flag &= ~LPFC_VMID_QOS_ENABLED; 11700 return 0; 11701 } 11702 11703 int 11704 lpfc_vmid_uvem(struct lpfc_vport *vport, 11705 struct lpfc_vmid *vmid, bool instantiated) 11706 { 11707 struct lpfc_vem_id_desc *vem_id_desc; 11708 struct lpfc_nodelist *ndlp; 11709 struct lpfc_iocbq *elsiocb; 11710 struct instantiated_ve_desc *inst_desc; 11711 struct lpfc_vmid_context *vmid_context; 11712 u8 *pcmd; 11713 u32 *len; 11714 int ret = 0; 11715 11716 ndlp = lpfc_findnode_did(vport, Fabric_DID); 11717 if (!ndlp || ndlp->nlp_state != NLP_STE_UNMAPPED_NODE) 11718 return -ENXIO; 11719 11720 vmid_context = kmalloc(sizeof(*vmid_context), GFP_KERNEL); 11721 if (!vmid_context) 11722 return -ENOMEM; 11723 elsiocb = lpfc_prep_els_iocb(vport, 1, LPFC_UVEM_SIZE, 2, 11724 ndlp, Fabric_DID, ELS_CMD_UVEM); 11725 if (!elsiocb) 11726 goto out; 11727 11728 lpfc_printf_vlog(vport, KERN_DEBUG, LOG_ELS, 11729 "3427 Host vmid %s %d\n", 11730 vmid->host_vmid, instantiated); 11731 vmid_context->vmp = vmid; 11732 vmid_context->nlp = ndlp; 11733 vmid_context->instantiated = instantiated; 11734 elsiocb->vmid_tag.vmid_context = vmid_context; 11735 pcmd = (u8 *)(((struct lpfc_dmabuf *)elsiocb->context2)->virt); 11736 11737 if (uuid_is_null((uuid_t *)vport->lpfc_vmid_host_uuid)) 11738 memcpy(vport->lpfc_vmid_host_uuid, vmid->host_vmid, 11739 LPFC_COMPRESS_VMID_SIZE); 11740 11741 *((u32 *)(pcmd)) = ELS_CMD_UVEM; 11742 len = (u32 *)(pcmd + 4); 11743 *len = cpu_to_be32(LPFC_UVEM_SIZE - 8); 11744 11745 vem_id_desc = (struct lpfc_vem_id_desc *)(pcmd + 8); 11746 vem_id_desc->tag = be32_to_cpu(VEM_ID_DESC_TAG); 11747 vem_id_desc->length = be32_to_cpu(LPFC_UVEM_VEM_ID_DESC_SIZE); 11748 memcpy(vem_id_desc->vem_id, vport->lpfc_vmid_host_uuid, 11749 LPFC_COMPRESS_VMID_SIZE); 11750 11751 inst_desc = (struct instantiated_ve_desc *)(pcmd + 32); 11752 inst_desc->tag = be32_to_cpu(INSTANTIATED_VE_DESC_TAG); 11753 inst_desc->length = be32_to_cpu(LPFC_UVEM_VE_MAP_DESC_SIZE); 11754 memcpy(inst_desc->global_vem_id, vmid->host_vmid, 11755 LPFC_COMPRESS_VMID_SIZE); 11756 11757 bf_set(lpfc_instantiated_nport_id, inst_desc, vport->fc_myDID); 11758 bf_set(lpfc_instantiated_local_id, inst_desc, 11759 vmid->un.cs_ctl_vmid); 11760 if (instantiated) { 11761 inst_desc->tag = be32_to_cpu(INSTANTIATED_VE_DESC_TAG); 11762 } else { 11763 inst_desc->tag = be32_to_cpu(DEINSTANTIATED_VE_DESC_TAG); 11764 lpfc_vmid_put_cs_ctl(vport, vmid->un.cs_ctl_vmid); 11765 } 11766 inst_desc->word6 = cpu_to_be32(inst_desc->word6); 11767 11768 elsiocb->iocb_cmpl = lpfc_cmpl_els_uvem; 11769 11770 elsiocb->context1 = lpfc_nlp_get(ndlp); 11771 if (!elsiocb->context1) { 11772 lpfc_els_free_iocb(vport->phba, elsiocb); 11773 goto out; 11774 } 11775 11776 ret = lpfc_sli_issue_iocb(vport->phba, LPFC_ELS_RING, elsiocb, 0); 11777 if (ret != IOCB_SUCCESS) { 11778 lpfc_els_free_iocb(vport->phba, elsiocb); 11779 lpfc_nlp_put(ndlp); 11780 goto out; 11781 } 11782 11783 return 0; 11784 out: 11785 kfree(vmid_context); 11786 return -EIO; 11787 } 11788 11789 static void 11790 lpfc_cmpl_els_uvem(struct lpfc_hba *phba, struct lpfc_iocbq *icmdiocb, 11791 struct lpfc_iocbq *rspiocb) 11792 { 11793 struct lpfc_vport *vport = icmdiocb->vport; 11794 struct lpfc_dmabuf *prsp = NULL; 11795 struct lpfc_vmid_context *vmid_context = 11796 icmdiocb->vmid_tag.vmid_context; 11797 struct lpfc_nodelist *ndlp = icmdiocb->context1; 11798 u8 *pcmd; 11799 u32 *data; 11800 IOCB_t *irsp = &rspiocb->iocb; 11801 struct lpfc_dmabuf *dmabuf = icmdiocb->context2; 11802 struct lpfc_vmid *vmid; 11803 11804 vmid = vmid_context->vmp; 11805 if (!ndlp || ndlp->nlp_state != NLP_STE_UNMAPPED_NODE) 11806 ndlp = NULL; 11807 11808 prsp = list_get_first(&dmabuf->list, struct lpfc_dmabuf, list); 11809 if (!prsp) 11810 goto out; 11811 pcmd = prsp->virt; 11812 data = (u32 *)pcmd; 11813 if (data[0] == ELS_CMD_LS_RJT) { 11814 lpfc_printf_vlog(vport, KERN_WARNING, LOG_SLI, 11815 "4532 UVEM LS_RJT %x %x\n", data[0], data[1]); 11816 goto out; 11817 } 11818 if (irsp->ulpStatus) { 11819 lpfc_printf_vlog(vport, KERN_WARNING, LOG_SLI, 11820 "4533 UVEM error status %x: %x\n", 11821 irsp->ulpStatus, irsp->un.ulpWord[4]); 11822 goto out; 11823 } 11824 spin_lock(&phba->hbalock); 11825 /* Set IN USE flag */ 11826 vport->vmid_flag |= LPFC_VMID_IN_USE; 11827 phba->pport->vmid_flag |= LPFC_VMID_IN_USE; 11828 spin_unlock(&phba->hbalock); 11829 11830 if (vmid_context->instantiated) { 11831 write_lock(&vport->vmid_lock); 11832 vmid->flag |= LPFC_VMID_REGISTERED; 11833 vmid->flag &= ~LPFC_VMID_REQ_REGISTER; 11834 write_unlock(&vport->vmid_lock); 11835 } 11836 11837 out: 11838 kfree(vmid_context); 11839 lpfc_els_free_iocb(phba, icmdiocb); 11840 lpfc_nlp_put(ndlp); 11841 } 11842