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->save_flags & NLP_WAIT_FOR_LOGO) { 2909 wake_up_waiter = 1; 2910 ndlp->save_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 be16_to_cpu(pcgd->xmt_signal_frequency.count), 4025 be16_to_cpu(pcgd->xmt_signal_frequency.units), 4026 be32_to_cpu(pcgd->rcv_signal_capability), 4027 be16_to_cpu(pcgd->rcv_signal_frequency.count), 4028 be16_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 case IOERR_SLI_ABORTED: 4581 /* Retry ELS PLOGI command? 4582 * Possibly the rport just wasn't ready. 4583 */ 4584 if (cmd == ELS_CMD_PLOGI) { 4585 /* No retry if state change */ 4586 if (ndlp && 4587 ndlp->nlp_state != NLP_STE_PLOGI_ISSUE) 4588 goto out_retry; 4589 retry = 1; 4590 maxretry = 2; 4591 } 4592 break; 4593 } 4594 break; 4595 4596 case IOSTAT_NPORT_RJT: 4597 case IOSTAT_FABRIC_RJT: 4598 if (irsp->un.ulpWord[4] & RJT_UNAVAIL_TEMP) { 4599 retry = 1; 4600 break; 4601 } 4602 break; 4603 4604 case IOSTAT_NPORT_BSY: 4605 case IOSTAT_FABRIC_BSY: 4606 logerr = 1; /* Fabric / Remote NPort out of resources */ 4607 retry = 1; 4608 break; 4609 4610 case IOSTAT_LS_RJT: 4611 stat.un.lsRjtError = be32_to_cpu(irsp->un.ulpWord[4]); 4612 /* Added for Vendor specifc support 4613 * Just keep retrying for these Rsn / Exp codes 4614 */ 4615 switch (stat.un.b.lsRjtRsnCode) { 4616 case LSRJT_UNABLE_TPC: 4617 /* The driver has a VALID PLOGI but the rport has 4618 * rejected the PRLI - can't do it now. Delay 4619 * for 1 second and try again. 4620 * 4621 * However, if explanation is REQ_UNSUPPORTED there's 4622 * no point to retry PRLI. 4623 */ 4624 if ((cmd == ELS_CMD_PRLI || cmd == ELS_CMD_NVMEPRLI) && 4625 stat.un.b.lsRjtRsnCodeExp != 4626 LSEXP_REQ_UNSUPPORTED) { 4627 delay = 1000; 4628 maxretry = lpfc_max_els_tries + 1; 4629 retry = 1; 4630 break; 4631 } 4632 4633 /* Legacy bug fix code for targets with PLOGI delays. */ 4634 if (stat.un.b.lsRjtRsnCodeExp == 4635 LSEXP_CMD_IN_PROGRESS) { 4636 if (cmd == ELS_CMD_PLOGI) { 4637 delay = 1000; 4638 maxretry = 48; 4639 } 4640 retry = 1; 4641 break; 4642 } 4643 if (stat.un.b.lsRjtRsnCodeExp == 4644 LSEXP_CANT_GIVE_DATA) { 4645 if (cmd == ELS_CMD_PLOGI) { 4646 delay = 1000; 4647 maxretry = 48; 4648 } 4649 retry = 1; 4650 break; 4651 } 4652 if (cmd == ELS_CMD_PLOGI) { 4653 delay = 1000; 4654 maxretry = lpfc_max_els_tries + 1; 4655 retry = 1; 4656 break; 4657 } 4658 if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) && 4659 (cmd == ELS_CMD_FDISC) && 4660 (stat.un.b.lsRjtRsnCodeExp == LSEXP_OUT_OF_RESOURCE)){ 4661 lpfc_printf_vlog(vport, KERN_ERR, 4662 LOG_TRACE_EVENT, 4663 "0125 FDISC Failed (x%x). " 4664 "Fabric out of resources\n", 4665 stat.un.lsRjtError); 4666 lpfc_vport_set_state(vport, 4667 FC_VPORT_NO_FABRIC_RSCS); 4668 } 4669 break; 4670 4671 case LSRJT_LOGICAL_BSY: 4672 if ((cmd == ELS_CMD_PLOGI) || 4673 (cmd == ELS_CMD_PRLI) || 4674 (cmd == ELS_CMD_NVMEPRLI)) { 4675 delay = 1000; 4676 maxretry = 48; 4677 } else if (cmd == ELS_CMD_FDISC) { 4678 /* FDISC retry policy */ 4679 maxretry = 48; 4680 if (cmdiocb->retry >= 32) 4681 delay = 1000; 4682 } 4683 retry = 1; 4684 break; 4685 4686 case LSRJT_LOGICAL_ERR: 4687 /* There are some cases where switches return this 4688 * error when they are not ready and should be returning 4689 * Logical Busy. We should delay every time. 4690 */ 4691 if (cmd == ELS_CMD_FDISC && 4692 stat.un.b.lsRjtRsnCodeExp == LSEXP_PORT_LOGIN_REQ) { 4693 maxretry = 3; 4694 delay = 1000; 4695 retry = 1; 4696 } else if (cmd == ELS_CMD_FLOGI && 4697 stat.un.b.lsRjtRsnCodeExp == 4698 LSEXP_NOTHING_MORE) { 4699 vport->fc_sparam.cmn.bbRcvSizeMsb &= 0xf; 4700 retry = 1; 4701 lpfc_printf_vlog(vport, KERN_ERR, 4702 LOG_TRACE_EVENT, 4703 "0820 FLOGI Failed (x%x). " 4704 "BBCredit Not Supported\n", 4705 stat.un.lsRjtError); 4706 } 4707 break; 4708 4709 case LSRJT_PROTOCOL_ERR: 4710 if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) && 4711 (cmd == ELS_CMD_FDISC) && 4712 ((stat.un.b.lsRjtRsnCodeExp == LSEXP_INVALID_PNAME) || 4713 (stat.un.b.lsRjtRsnCodeExp == LSEXP_INVALID_NPORT_ID)) 4714 ) { 4715 lpfc_printf_vlog(vport, KERN_ERR, 4716 LOG_TRACE_EVENT, 4717 "0122 FDISC Failed (x%x). " 4718 "Fabric Detected Bad WWN\n", 4719 stat.un.lsRjtError); 4720 lpfc_vport_set_state(vport, 4721 FC_VPORT_FABRIC_REJ_WWN); 4722 } 4723 break; 4724 case LSRJT_VENDOR_UNIQUE: 4725 if ((stat.un.b.vendorUnique == 0x45) && 4726 (cmd == ELS_CMD_FLOGI)) { 4727 goto out_retry; 4728 } 4729 break; 4730 case LSRJT_CMD_UNSUPPORTED: 4731 /* lpfc nvmet returns this type of LS_RJT when it 4732 * receives an FCP PRLI because lpfc nvmet only 4733 * support NVME. ELS request is terminated for FCP4 4734 * on this rport. 4735 */ 4736 if (stat.un.b.lsRjtRsnCodeExp == 4737 LSEXP_REQ_UNSUPPORTED && cmd == ELS_CMD_PRLI) { 4738 spin_lock_irq(&ndlp->lock); 4739 ndlp->nlp_flag |= NLP_FCP_PRLI_RJT; 4740 spin_unlock_irq(&ndlp->lock); 4741 retry = 0; 4742 goto out_retry; 4743 } 4744 break; 4745 } 4746 break; 4747 4748 case IOSTAT_INTERMED_RSP: 4749 case IOSTAT_BA_RJT: 4750 break; 4751 4752 default: 4753 break; 4754 } 4755 4756 if (link_reset) { 4757 rc = lpfc_link_reset(vport); 4758 if (rc) { 4759 /* Do not give up. Retry PLOGI one more time and attempt 4760 * link reset if PLOGI fails again. 4761 */ 4762 retry = 1; 4763 delay = 100; 4764 goto out_retry; 4765 } 4766 return 1; 4767 } 4768 4769 if (did == FDMI_DID) 4770 retry = 1; 4771 4772 if ((cmd == ELS_CMD_FLOGI) && 4773 (phba->fc_topology != LPFC_TOPOLOGY_LOOP) && 4774 !lpfc_error_lost_link(irsp)) { 4775 /* FLOGI retry policy */ 4776 retry = 1; 4777 /* retry FLOGI forever */ 4778 if (phba->link_flag != LS_LOOPBACK_MODE) 4779 maxretry = 0; 4780 else 4781 maxretry = 2; 4782 4783 if (cmdiocb->retry >= 100) 4784 delay = 5000; 4785 else if (cmdiocb->retry >= 32) 4786 delay = 1000; 4787 } else if ((cmd == ELS_CMD_FDISC) && !lpfc_error_lost_link(irsp)) { 4788 /* retry FDISCs every second up to devloss */ 4789 retry = 1; 4790 maxretry = vport->cfg_devloss_tmo; 4791 delay = 1000; 4792 } 4793 4794 cmdiocb->retry++; 4795 if (maxretry && (cmdiocb->retry >= maxretry)) { 4796 phba->fc_stat.elsRetryExceeded++; 4797 retry = 0; 4798 } 4799 4800 if ((vport->load_flag & FC_UNLOADING) != 0) 4801 retry = 0; 4802 4803 out_retry: 4804 if (retry) { 4805 if ((cmd == ELS_CMD_PLOGI) || (cmd == ELS_CMD_FDISC)) { 4806 /* Stop retrying PLOGI and FDISC if in FCF discovery */ 4807 if (phba->fcf.fcf_flag & FCF_DISCOVERY) { 4808 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, 4809 "2849 Stop retry ELS command " 4810 "x%x to remote NPORT x%x, " 4811 "Data: x%x x%x\n", cmd, did, 4812 cmdiocb->retry, delay); 4813 return 0; 4814 } 4815 } 4816 4817 /* Retry ELS command <elsCmd> to remote NPORT <did> */ 4818 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, 4819 "0107 Retry ELS command x%x to remote " 4820 "NPORT x%x Data: x%x x%x\n", 4821 cmd, did, cmdiocb->retry, delay); 4822 4823 if (((cmd == ELS_CMD_PLOGI) || (cmd == ELS_CMD_ADISC)) && 4824 ((irsp->ulpStatus != IOSTAT_LOCAL_REJECT) || 4825 ((irsp->un.ulpWord[4] & IOERR_PARAM_MASK) != 4826 IOERR_NO_RESOURCES))) { 4827 /* Don't reset timer for no resources */ 4828 4829 /* If discovery / RSCN timer is running, reset it */ 4830 if (timer_pending(&vport->fc_disctmo) || 4831 (vport->fc_flag & FC_RSCN_MODE)) 4832 lpfc_set_disctmo(vport); 4833 } 4834 4835 phba->fc_stat.elsXmitRetry++; 4836 if (ndlp && delay) { 4837 phba->fc_stat.elsDelayRetry++; 4838 ndlp->nlp_retry = cmdiocb->retry; 4839 4840 /* delay is specified in milliseconds */ 4841 mod_timer(&ndlp->nlp_delayfunc, 4842 jiffies + msecs_to_jiffies(delay)); 4843 spin_lock_irq(&ndlp->lock); 4844 ndlp->nlp_flag |= NLP_DELAY_TMO; 4845 spin_unlock_irq(&ndlp->lock); 4846 4847 ndlp->nlp_prev_state = ndlp->nlp_state; 4848 if ((cmd == ELS_CMD_PRLI) || 4849 (cmd == ELS_CMD_NVMEPRLI)) 4850 lpfc_nlp_set_state(vport, ndlp, 4851 NLP_STE_PRLI_ISSUE); 4852 else if (cmd != ELS_CMD_ADISC) 4853 lpfc_nlp_set_state(vport, ndlp, 4854 NLP_STE_NPR_NODE); 4855 ndlp->nlp_last_elscmd = cmd; 4856 4857 return 1; 4858 } 4859 switch (cmd) { 4860 case ELS_CMD_FLOGI: 4861 lpfc_issue_els_flogi(vport, ndlp, cmdiocb->retry); 4862 return 1; 4863 case ELS_CMD_FDISC: 4864 lpfc_issue_els_fdisc(vport, ndlp, cmdiocb->retry); 4865 return 1; 4866 case ELS_CMD_PLOGI: 4867 if (ndlp) { 4868 ndlp->nlp_prev_state = ndlp->nlp_state; 4869 lpfc_nlp_set_state(vport, ndlp, 4870 NLP_STE_PLOGI_ISSUE); 4871 } 4872 lpfc_issue_els_plogi(vport, did, cmdiocb->retry); 4873 return 1; 4874 case ELS_CMD_ADISC: 4875 ndlp->nlp_prev_state = ndlp->nlp_state; 4876 lpfc_nlp_set_state(vport, ndlp, NLP_STE_ADISC_ISSUE); 4877 lpfc_issue_els_adisc(vport, ndlp, cmdiocb->retry); 4878 return 1; 4879 case ELS_CMD_PRLI: 4880 case ELS_CMD_NVMEPRLI: 4881 ndlp->nlp_prev_state = ndlp->nlp_state; 4882 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PRLI_ISSUE); 4883 lpfc_issue_els_prli(vport, ndlp, cmdiocb->retry); 4884 return 1; 4885 case ELS_CMD_LOGO: 4886 ndlp->nlp_prev_state = ndlp->nlp_state; 4887 lpfc_nlp_set_state(vport, ndlp, NLP_STE_LOGO_ISSUE); 4888 lpfc_issue_els_logo(vport, ndlp, cmdiocb->retry); 4889 return 1; 4890 } 4891 } 4892 /* No retry ELS command <elsCmd> to remote NPORT <did> */ 4893 if (logerr) { 4894 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 4895 "0137 No retry ELS command x%x to remote " 4896 "NPORT x%x: Out of Resources: Error:x%x/%x\n", 4897 cmd, did, irsp->ulpStatus, 4898 irsp->un.ulpWord[4]); 4899 } 4900 else { 4901 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, 4902 "0108 No retry ELS command x%x to remote " 4903 "NPORT x%x Retried:%d Error:x%x/%x\n", 4904 cmd, did, cmdiocb->retry, irsp->ulpStatus, 4905 irsp->un.ulpWord[4]); 4906 } 4907 return 0; 4908 } 4909 4910 /** 4911 * lpfc_els_free_data - Free lpfc dma buffer and data structure with an iocb 4912 * @phba: pointer to lpfc hba data structure. 4913 * @buf_ptr1: pointer to the lpfc DMA buffer data structure. 4914 * 4915 * This routine releases the lpfc DMA (Direct Memory Access) buffer(s) 4916 * associated with a command IOCB back to the lpfc DMA buffer pool. It first 4917 * checks to see whether there is a lpfc DMA buffer associated with the 4918 * response of the command IOCB. If so, it will be released before releasing 4919 * the lpfc DMA buffer associated with the IOCB itself. 4920 * 4921 * Return code 4922 * 0 - Successfully released lpfc DMA buffer (currently, always return 0) 4923 **/ 4924 static int 4925 lpfc_els_free_data(struct lpfc_hba *phba, struct lpfc_dmabuf *buf_ptr1) 4926 { 4927 struct lpfc_dmabuf *buf_ptr; 4928 4929 /* Free the response before processing the command. */ 4930 if (!list_empty(&buf_ptr1->list)) { 4931 list_remove_head(&buf_ptr1->list, buf_ptr, 4932 struct lpfc_dmabuf, 4933 list); 4934 lpfc_mbuf_free(phba, buf_ptr->virt, buf_ptr->phys); 4935 kfree(buf_ptr); 4936 } 4937 lpfc_mbuf_free(phba, buf_ptr1->virt, buf_ptr1->phys); 4938 kfree(buf_ptr1); 4939 return 0; 4940 } 4941 4942 /** 4943 * lpfc_els_free_bpl - Free lpfc dma buffer and data structure with bpl 4944 * @phba: pointer to lpfc hba data structure. 4945 * @buf_ptr: pointer to the lpfc dma buffer data structure. 4946 * 4947 * This routine releases the lpfc Direct Memory Access (DMA) buffer 4948 * associated with a Buffer Pointer List (BPL) back to the lpfc DMA buffer 4949 * pool. 4950 * 4951 * Return code 4952 * 0 - Successfully released lpfc DMA buffer (currently, always return 0) 4953 **/ 4954 static int 4955 lpfc_els_free_bpl(struct lpfc_hba *phba, struct lpfc_dmabuf *buf_ptr) 4956 { 4957 lpfc_mbuf_free(phba, buf_ptr->virt, buf_ptr->phys); 4958 kfree(buf_ptr); 4959 return 0; 4960 } 4961 4962 /** 4963 * lpfc_els_free_iocb - Free a command iocb and its associated resources 4964 * @phba: pointer to lpfc hba data structure. 4965 * @elsiocb: pointer to lpfc els command iocb data structure. 4966 * 4967 * This routine frees a command IOCB and its associated resources. The 4968 * command IOCB data structure contains the reference to various associated 4969 * resources, these fields must be set to NULL if the associated reference 4970 * not present: 4971 * context1 - reference to ndlp 4972 * context2 - reference to cmd 4973 * context2->next - reference to rsp 4974 * context3 - reference to bpl 4975 * 4976 * It first properly decrements the reference count held on ndlp for the 4977 * IOCB completion callback function. If LPFC_DELAY_MEM_FREE flag is not 4978 * set, it invokes the lpfc_els_free_data() routine to release the Direct 4979 * Memory Access (DMA) buffers associated with the IOCB. Otherwise, it 4980 * adds the DMA buffer the @phba data structure for the delayed release. 4981 * If reference to the Buffer Pointer List (BPL) is present, the 4982 * lpfc_els_free_bpl() routine is invoked to release the DMA memory 4983 * associated with BPL. Finally, the lpfc_sli_release_iocbq() routine is 4984 * invoked to release the IOCB data structure back to @phba IOCBQ list. 4985 * 4986 * Return code 4987 * 0 - Success (currently, always return 0) 4988 **/ 4989 int 4990 lpfc_els_free_iocb(struct lpfc_hba *phba, struct lpfc_iocbq *elsiocb) 4991 { 4992 struct lpfc_dmabuf *buf_ptr, *buf_ptr1; 4993 4994 /* The I/O iocb is complete. Clear the context1 data. */ 4995 elsiocb->context1 = NULL; 4996 4997 /* context2 = cmd, context2->next = rsp, context3 = bpl */ 4998 if (elsiocb->context2) { 4999 if (elsiocb->iocb_flag & LPFC_DELAY_MEM_FREE) { 5000 /* Firmware could still be in progress of DMAing 5001 * payload, so don't free data buffer till after 5002 * a hbeat. 5003 */ 5004 elsiocb->iocb_flag &= ~LPFC_DELAY_MEM_FREE; 5005 buf_ptr = elsiocb->context2; 5006 elsiocb->context2 = NULL; 5007 if (buf_ptr) { 5008 buf_ptr1 = NULL; 5009 spin_lock_irq(&phba->hbalock); 5010 if (!list_empty(&buf_ptr->list)) { 5011 list_remove_head(&buf_ptr->list, 5012 buf_ptr1, struct lpfc_dmabuf, 5013 list); 5014 INIT_LIST_HEAD(&buf_ptr1->list); 5015 list_add_tail(&buf_ptr1->list, 5016 &phba->elsbuf); 5017 phba->elsbuf_cnt++; 5018 } 5019 INIT_LIST_HEAD(&buf_ptr->list); 5020 list_add_tail(&buf_ptr->list, &phba->elsbuf); 5021 phba->elsbuf_cnt++; 5022 spin_unlock_irq(&phba->hbalock); 5023 } 5024 } else { 5025 buf_ptr1 = (struct lpfc_dmabuf *) elsiocb->context2; 5026 lpfc_els_free_data(phba, buf_ptr1); 5027 elsiocb->context2 = NULL; 5028 } 5029 } 5030 5031 if (elsiocb->context3) { 5032 buf_ptr = (struct lpfc_dmabuf *) elsiocb->context3; 5033 lpfc_els_free_bpl(phba, buf_ptr); 5034 elsiocb->context3 = NULL; 5035 } 5036 lpfc_sli_release_iocbq(phba, elsiocb); 5037 return 0; 5038 } 5039 5040 /** 5041 * lpfc_cmpl_els_logo_acc - Completion callback function to logo acc response 5042 * @phba: pointer to lpfc hba data structure. 5043 * @cmdiocb: pointer to lpfc command iocb data structure. 5044 * @rspiocb: pointer to lpfc response iocb data structure. 5045 * 5046 * This routine is the completion callback function to the Logout (LOGO) 5047 * Accept (ACC) Response ELS command. This routine is invoked to indicate 5048 * the completion of the LOGO process. It invokes the lpfc_nlp_not_used() to 5049 * release the ndlp if it has the last reference remaining (reference count 5050 * is 1). If succeeded (meaning ndlp released), it sets the IOCB context1 5051 * field to NULL to inform the following lpfc_els_free_iocb() routine no 5052 * ndlp reference count needs to be decremented. Otherwise, the ndlp 5053 * reference use-count shall be decremented by the lpfc_els_free_iocb() 5054 * routine. Finally, the lpfc_els_free_iocb() is invoked to release the 5055 * IOCB data structure. 5056 **/ 5057 static void 5058 lpfc_cmpl_els_logo_acc(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb, 5059 struct lpfc_iocbq *rspiocb) 5060 { 5061 struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) cmdiocb->context1; 5062 struct lpfc_vport *vport = cmdiocb->vport; 5063 IOCB_t *irsp; 5064 5065 irsp = &rspiocb->iocb; 5066 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP, 5067 "ACC LOGO cmpl: status:x%x/x%x did:x%x", 5068 irsp->ulpStatus, irsp->un.ulpWord[4], ndlp->nlp_DID); 5069 /* ACC to LOGO completes to NPort <nlp_DID> */ 5070 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, 5071 "0109 ACC to LOGO completes to NPort x%x refcnt %d " 5072 "Data: x%x x%x x%x\n", 5073 ndlp->nlp_DID, kref_read(&ndlp->kref), ndlp->nlp_flag, 5074 ndlp->nlp_state, ndlp->nlp_rpi); 5075 5076 /* This clause allows the LOGO ACC to complete and free resources 5077 * for the Fabric Domain Controller. It does deliberately skip 5078 * the unreg_rpi and release rpi because some fabrics send RDP 5079 * requests after logging out from the initiator. 5080 */ 5081 if (ndlp->nlp_type & NLP_FABRIC && 5082 ((ndlp->nlp_DID & WELL_KNOWN_DID_MASK) != WELL_KNOWN_DID_MASK)) 5083 goto out; 5084 5085 if (ndlp->nlp_state == NLP_STE_NPR_NODE) { 5086 5087 /* If PLOGI is being retried, PLOGI completion will cleanup the 5088 * node. The NLP_NPR_2B_DISC flag needs to be retained to make 5089 * progress on nodes discovered from last RSCN. 5090 */ 5091 if ((ndlp->nlp_flag & NLP_DELAY_TMO) && 5092 (ndlp->nlp_last_elscmd == ELS_CMD_PLOGI)) 5093 goto out; 5094 5095 /* NPort Recovery mode or node is just allocated */ 5096 if (!lpfc_nlp_not_used(ndlp)) { 5097 /* A LOGO is completing and the node is in NPR state. 5098 * If this a fabric node that cleared its transport 5099 * registration, release the rpi. 5100 */ 5101 spin_lock_irq(&ndlp->lock); 5102 ndlp->nlp_flag &= ~NLP_NPR_2B_DISC; 5103 if (phba->sli_rev == LPFC_SLI_REV4) 5104 ndlp->nlp_flag |= NLP_RELEASE_RPI; 5105 spin_unlock_irq(&ndlp->lock); 5106 lpfc_unreg_rpi(vport, ndlp); 5107 } else { 5108 /* Indicate the node has already released, should 5109 * not reference to it from within lpfc_els_free_iocb. 5110 */ 5111 cmdiocb->context1 = NULL; 5112 } 5113 } 5114 out: 5115 /* 5116 * The driver received a LOGO from the rport and has ACK'd it. 5117 * At this point, the driver is done so release the IOCB 5118 */ 5119 lpfc_els_free_iocb(phba, cmdiocb); 5120 lpfc_nlp_put(ndlp); 5121 } 5122 5123 /** 5124 * lpfc_mbx_cmpl_dflt_rpi - Completion callbk func for unreg dflt rpi mbox cmd 5125 * @phba: pointer to lpfc hba data structure. 5126 * @pmb: pointer to the driver internal queue element for mailbox command. 5127 * 5128 * This routine is the completion callback function for unregister default 5129 * RPI (Remote Port Index) mailbox command to the @phba. It simply releases 5130 * the associated lpfc Direct Memory Access (DMA) buffer back to the pool and 5131 * decrements the ndlp reference count held for this completion callback 5132 * function. After that, it invokes the lpfc_nlp_not_used() to check 5133 * whether there is only one reference left on the ndlp. If so, it will 5134 * perform one more decrement and trigger the release of the ndlp. 5135 **/ 5136 void 5137 lpfc_mbx_cmpl_dflt_rpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 5138 { 5139 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *)(pmb->ctx_buf); 5140 struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *)pmb->ctx_ndlp; 5141 u32 mbx_flag = pmb->mbox_flag; 5142 u32 mbx_cmd = pmb->u.mb.mbxCommand; 5143 5144 pmb->ctx_buf = NULL; 5145 pmb->ctx_ndlp = NULL; 5146 5147 if (ndlp) { 5148 lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_NODE, 5149 "0006 rpi x%x DID:%x flg:%x %d x%px " 5150 "mbx_cmd x%x mbx_flag x%x x%px\n", 5151 ndlp->nlp_rpi, ndlp->nlp_DID, ndlp->nlp_flag, 5152 kref_read(&ndlp->kref), ndlp, mbx_cmd, 5153 mbx_flag, pmb); 5154 5155 /* This ends the default/temporary RPI cleanup logic for this 5156 * ndlp and the node and rpi needs to be released. Free the rpi 5157 * first on an UNREG_LOGIN and then release the final 5158 * references. 5159 */ 5160 spin_lock_irq(&ndlp->lock); 5161 ndlp->nlp_flag &= ~NLP_REG_LOGIN_SEND; 5162 if (mbx_cmd == MBX_UNREG_LOGIN) 5163 ndlp->nlp_flag &= ~NLP_UNREG_INP; 5164 spin_unlock_irq(&ndlp->lock); 5165 lpfc_nlp_put(ndlp); 5166 lpfc_drop_node(ndlp->vport, ndlp); 5167 } 5168 5169 lpfc_mbuf_free(phba, mp->virt, mp->phys); 5170 kfree(mp); 5171 mempool_free(pmb, phba->mbox_mem_pool); 5172 return; 5173 } 5174 5175 /** 5176 * lpfc_cmpl_els_rsp - Completion callback function for els response iocb cmd 5177 * @phba: pointer to lpfc hba data structure. 5178 * @cmdiocb: pointer to lpfc command iocb data structure. 5179 * @rspiocb: pointer to lpfc response iocb data structure. 5180 * 5181 * This routine is the completion callback function for ELS Response IOCB 5182 * command. In normal case, this callback function just properly sets the 5183 * nlp_flag bitmap in the ndlp data structure, if the mbox command reference 5184 * field in the command IOCB is not NULL, the referred mailbox command will 5185 * be send out, and then invokes the lpfc_els_free_iocb() routine to release 5186 * the IOCB. 5187 **/ 5188 static void 5189 lpfc_cmpl_els_rsp(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb, 5190 struct lpfc_iocbq *rspiocb) 5191 { 5192 struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) cmdiocb->context1; 5193 struct lpfc_vport *vport = ndlp ? ndlp->vport : NULL; 5194 struct Scsi_Host *shost = vport ? lpfc_shost_from_vport(vport) : NULL; 5195 IOCB_t *irsp; 5196 LPFC_MBOXQ_t *mbox = NULL; 5197 struct lpfc_dmabuf *mp = NULL; 5198 5199 irsp = &rspiocb->iocb; 5200 5201 if (!vport) { 5202 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 5203 "3177 ELS response failed\n"); 5204 goto out; 5205 } 5206 if (cmdiocb->context_un.mbox) 5207 mbox = cmdiocb->context_un.mbox; 5208 5209 /* Check to see if link went down during discovery */ 5210 if (!ndlp || lpfc_els_chk_latt(vport)) { 5211 if (mbox) { 5212 mp = (struct lpfc_dmabuf *)mbox->ctx_buf; 5213 if (mp) { 5214 lpfc_mbuf_free(phba, mp->virt, mp->phys); 5215 kfree(mp); 5216 } 5217 mempool_free(mbox, phba->mbox_mem_pool); 5218 } 5219 goto out; 5220 } 5221 5222 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP, 5223 "ELS rsp cmpl: status:x%x/x%x did:x%x", 5224 irsp->ulpStatus, irsp->un.ulpWord[4], 5225 cmdiocb->iocb.un.elsreq64.remoteID); 5226 /* ELS response tag <ulpIoTag> completes */ 5227 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, 5228 "0110 ELS response tag x%x completes " 5229 "Data: x%x x%x x%x x%x x%x x%x x%x x%x x%px\n", 5230 cmdiocb->iocb.ulpIoTag, rspiocb->iocb.ulpStatus, 5231 rspiocb->iocb.un.ulpWord[4], rspiocb->iocb.ulpTimeout, 5232 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state, 5233 ndlp->nlp_rpi, kref_read(&ndlp->kref), mbox); 5234 if (mbox) { 5235 if ((rspiocb->iocb.ulpStatus == 0) && 5236 (ndlp->nlp_flag & NLP_ACC_REGLOGIN)) { 5237 if (!lpfc_unreg_rpi(vport, ndlp) && 5238 (!(vport->fc_flag & FC_PT2PT))) { 5239 if (ndlp->nlp_state == NLP_STE_REG_LOGIN_ISSUE) { 5240 lpfc_printf_vlog(vport, KERN_INFO, 5241 LOG_DISCOVERY, 5242 "0314 PLOGI recov " 5243 "DID x%x " 5244 "Data: x%x x%x x%x\n", 5245 ndlp->nlp_DID, 5246 ndlp->nlp_state, 5247 ndlp->nlp_rpi, 5248 ndlp->nlp_flag); 5249 mp = mbox->ctx_buf; 5250 if (mp) { 5251 lpfc_mbuf_free(phba, mp->virt, 5252 mp->phys); 5253 kfree(mp); 5254 } 5255 mempool_free(mbox, phba->mbox_mem_pool); 5256 goto out; 5257 } 5258 } 5259 5260 /* Increment reference count to ndlp to hold the 5261 * reference to ndlp for the callback function. 5262 */ 5263 mbox->ctx_ndlp = lpfc_nlp_get(ndlp); 5264 if (!mbox->ctx_ndlp) 5265 goto out; 5266 5267 mbox->vport = vport; 5268 if (ndlp->nlp_flag & NLP_RM_DFLT_RPI) { 5269 mbox->mbox_flag |= LPFC_MBX_IMED_UNREG; 5270 mbox->mbox_cmpl = lpfc_mbx_cmpl_dflt_rpi; 5271 } 5272 else { 5273 mbox->mbox_cmpl = lpfc_mbx_cmpl_reg_login; 5274 ndlp->nlp_prev_state = ndlp->nlp_state; 5275 lpfc_nlp_set_state(vport, ndlp, 5276 NLP_STE_REG_LOGIN_ISSUE); 5277 } 5278 5279 ndlp->nlp_flag |= NLP_REG_LOGIN_SEND; 5280 if (lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT) 5281 != MBX_NOT_FINISHED) 5282 goto out; 5283 5284 /* Decrement the ndlp reference count we 5285 * set for this failed mailbox command. 5286 */ 5287 lpfc_nlp_put(ndlp); 5288 ndlp->nlp_flag &= ~NLP_REG_LOGIN_SEND; 5289 5290 /* ELS rsp: Cannot issue reg_login for <NPortid> */ 5291 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 5292 "0138 ELS rsp: Cannot issue reg_login for x%x " 5293 "Data: x%x x%x x%x\n", 5294 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state, 5295 ndlp->nlp_rpi); 5296 } 5297 mp = (struct lpfc_dmabuf *)mbox->ctx_buf; 5298 if (mp) { 5299 lpfc_mbuf_free(phba, mp->virt, mp->phys); 5300 kfree(mp); 5301 } 5302 mempool_free(mbox, phba->mbox_mem_pool); 5303 } 5304 out: 5305 if (ndlp && shost) { 5306 spin_lock_irq(&ndlp->lock); 5307 if (mbox) 5308 ndlp->nlp_flag &= ~NLP_ACC_REGLOGIN; 5309 ndlp->nlp_flag &= ~NLP_RM_DFLT_RPI; 5310 spin_unlock_irq(&ndlp->lock); 5311 } 5312 5313 /* An SLI4 NPIV instance wants to drop the node at this point under 5314 * these conditions and release the RPI. 5315 */ 5316 if (phba->sli_rev == LPFC_SLI_REV4 && 5317 (vport && vport->port_type == LPFC_NPIV_PORT) && 5318 !(ndlp->fc4_xpt_flags & SCSI_XPT_REGD) && 5319 ndlp->nlp_flag & NLP_RELEASE_RPI) { 5320 lpfc_sli4_free_rpi(phba, ndlp->nlp_rpi); 5321 spin_lock_irq(&ndlp->lock); 5322 ndlp->nlp_rpi = LPFC_RPI_ALLOC_ERROR; 5323 ndlp->nlp_flag &= ~NLP_RELEASE_RPI; 5324 spin_unlock_irq(&ndlp->lock); 5325 lpfc_drop_node(vport, ndlp); 5326 } 5327 5328 /* Release the originating I/O reference. */ 5329 lpfc_els_free_iocb(phba, cmdiocb); 5330 lpfc_nlp_put(ndlp); 5331 return; 5332 } 5333 5334 /** 5335 * lpfc_els_rsp_acc - Prepare and issue an acc response iocb command 5336 * @vport: pointer to a host virtual N_Port data structure. 5337 * @flag: the els command code to be accepted. 5338 * @oldiocb: pointer to the original lpfc command iocb data structure. 5339 * @ndlp: pointer to a node-list data structure. 5340 * @mbox: pointer to the driver internal queue element for mailbox command. 5341 * 5342 * This routine prepares and issues an Accept (ACC) response IOCB 5343 * command. It uses the @flag to properly set up the IOCB field for the 5344 * specific ACC response command to be issued and invokes the 5345 * lpfc_sli_issue_iocb() routine to send out ACC response IOCB. If a 5346 * @mbox pointer is passed in, it will be put into the context_un.mbox 5347 * field of the IOCB for the completion callback function to issue the 5348 * mailbox command to the HBA later when callback is invoked. 5349 * 5350 * Note that the ndlp reference count will be incremented by 1 for holding the 5351 * ndlp and the reference to ndlp will be stored into the context1 field of 5352 * the IOCB for the completion callback function to the corresponding 5353 * response ELS IOCB command. 5354 * 5355 * Return code 5356 * 0 - Successfully issued acc response 5357 * 1 - Failed to issue acc response 5358 **/ 5359 int 5360 lpfc_els_rsp_acc(struct lpfc_vport *vport, uint32_t flag, 5361 struct lpfc_iocbq *oldiocb, struct lpfc_nodelist *ndlp, 5362 LPFC_MBOXQ_t *mbox) 5363 { 5364 struct lpfc_hba *phba = vport->phba; 5365 IOCB_t *icmd; 5366 IOCB_t *oldcmd; 5367 struct lpfc_iocbq *elsiocb; 5368 uint8_t *pcmd; 5369 struct serv_parm *sp; 5370 uint16_t cmdsize; 5371 int rc; 5372 ELS_PKT *els_pkt_ptr; 5373 struct fc_els_rdf_resp *rdf_resp; 5374 5375 oldcmd = &oldiocb->iocb; 5376 5377 switch (flag) { 5378 case ELS_CMD_ACC: 5379 cmdsize = sizeof(uint32_t); 5380 elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry, 5381 ndlp, ndlp->nlp_DID, ELS_CMD_ACC); 5382 if (!elsiocb) { 5383 spin_lock_irq(&ndlp->lock); 5384 ndlp->nlp_flag &= ~NLP_LOGO_ACC; 5385 spin_unlock_irq(&ndlp->lock); 5386 return 1; 5387 } 5388 5389 icmd = &elsiocb->iocb; 5390 icmd->ulpContext = oldcmd->ulpContext; /* Xri / rx_id */ 5391 icmd->unsli3.rcvsli3.ox_id = oldcmd->unsli3.rcvsli3.ox_id; 5392 pcmd = (((struct lpfc_dmabuf *) elsiocb->context2)->virt); 5393 *((uint32_t *) (pcmd)) = ELS_CMD_ACC; 5394 pcmd += sizeof(uint32_t); 5395 5396 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP, 5397 "Issue ACC: did:x%x flg:x%x", 5398 ndlp->nlp_DID, ndlp->nlp_flag, 0); 5399 break; 5400 case ELS_CMD_FLOGI: 5401 case ELS_CMD_PLOGI: 5402 cmdsize = (sizeof(struct serv_parm) + sizeof(uint32_t)); 5403 elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry, 5404 ndlp, ndlp->nlp_DID, ELS_CMD_ACC); 5405 if (!elsiocb) 5406 return 1; 5407 5408 icmd = &elsiocb->iocb; 5409 icmd->ulpContext = oldcmd->ulpContext; /* Xri / rx_id */ 5410 icmd->unsli3.rcvsli3.ox_id = oldcmd->unsli3.rcvsli3.ox_id; 5411 pcmd = (((struct lpfc_dmabuf *) elsiocb->context2)->virt); 5412 5413 if (mbox) 5414 elsiocb->context_un.mbox = mbox; 5415 5416 *((uint32_t *) (pcmd)) = ELS_CMD_ACC; 5417 pcmd += sizeof(uint32_t); 5418 sp = (struct serv_parm *)pcmd; 5419 5420 if (flag == ELS_CMD_FLOGI) { 5421 /* Copy the received service parameters back */ 5422 memcpy(sp, &phba->fc_fabparam, 5423 sizeof(struct serv_parm)); 5424 5425 /* Clear the F_Port bit */ 5426 sp->cmn.fPort = 0; 5427 5428 /* Mark all class service parameters as invalid */ 5429 sp->cls1.classValid = 0; 5430 sp->cls2.classValid = 0; 5431 sp->cls3.classValid = 0; 5432 sp->cls4.classValid = 0; 5433 5434 /* Copy our worldwide names */ 5435 memcpy(&sp->portName, &vport->fc_sparam.portName, 5436 sizeof(struct lpfc_name)); 5437 memcpy(&sp->nodeName, &vport->fc_sparam.nodeName, 5438 sizeof(struct lpfc_name)); 5439 } else { 5440 memcpy(pcmd, &vport->fc_sparam, 5441 sizeof(struct serv_parm)); 5442 5443 sp->cmn.valid_vendor_ver_level = 0; 5444 memset(sp->un.vendorVersion, 0, 5445 sizeof(sp->un.vendorVersion)); 5446 sp->cmn.bbRcvSizeMsb &= 0xF; 5447 5448 /* If our firmware supports this feature, convey that 5449 * info to the target using the vendor specific field. 5450 */ 5451 if (phba->sli.sli_flag & LPFC_SLI_SUPPRESS_RSP) { 5452 sp->cmn.valid_vendor_ver_level = 1; 5453 sp->un.vv.vid = cpu_to_be32(LPFC_VV_EMLX_ID); 5454 sp->un.vv.flags = 5455 cpu_to_be32(LPFC_VV_SUPPRESS_RSP); 5456 } 5457 } 5458 5459 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP, 5460 "Issue ACC FLOGI/PLOGI: did:x%x flg:x%x", 5461 ndlp->nlp_DID, ndlp->nlp_flag, 0); 5462 break; 5463 case ELS_CMD_PRLO: 5464 cmdsize = sizeof(uint32_t) + sizeof(PRLO); 5465 elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry, 5466 ndlp, ndlp->nlp_DID, ELS_CMD_PRLO); 5467 if (!elsiocb) 5468 return 1; 5469 5470 icmd = &elsiocb->iocb; 5471 icmd->ulpContext = oldcmd->ulpContext; /* Xri / rx_id */ 5472 icmd->unsli3.rcvsli3.ox_id = oldcmd->unsli3.rcvsli3.ox_id; 5473 pcmd = (((struct lpfc_dmabuf *) elsiocb->context2)->virt); 5474 5475 memcpy(pcmd, ((struct lpfc_dmabuf *) oldiocb->context2)->virt, 5476 sizeof(uint32_t) + sizeof(PRLO)); 5477 *((uint32_t *) (pcmd)) = ELS_CMD_PRLO_ACC; 5478 els_pkt_ptr = (ELS_PKT *) pcmd; 5479 els_pkt_ptr->un.prlo.acceptRspCode = PRLO_REQ_EXECUTED; 5480 5481 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP, 5482 "Issue ACC PRLO: did:x%x flg:x%x", 5483 ndlp->nlp_DID, ndlp->nlp_flag, 0); 5484 break; 5485 case ELS_CMD_RDF: 5486 cmdsize = sizeof(*rdf_resp); 5487 elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry, 5488 ndlp, ndlp->nlp_DID, ELS_CMD_ACC); 5489 if (!elsiocb) 5490 return 1; 5491 5492 icmd = &elsiocb->iocb; 5493 icmd->ulpContext = oldcmd->ulpContext; /* Xri / rx_id */ 5494 icmd->unsli3.rcvsli3.ox_id = oldcmd->unsli3.rcvsli3.ox_id; 5495 pcmd = (((struct lpfc_dmabuf *)elsiocb->context2)->virt); 5496 rdf_resp = (struct fc_els_rdf_resp *)pcmd; 5497 memset(rdf_resp, 0, sizeof(*rdf_resp)); 5498 rdf_resp->acc_hdr.la_cmd = ELS_LS_ACC; 5499 5500 /* FC-LS-5 specifies desc_list_len shall be set to 12 */ 5501 rdf_resp->desc_list_len = cpu_to_be32(12); 5502 5503 /* FC-LS-5 specifies LS REQ Information descriptor */ 5504 rdf_resp->lsri.desc_tag = cpu_to_be32(1); 5505 rdf_resp->lsri.desc_len = cpu_to_be32(sizeof(u32)); 5506 rdf_resp->lsri.rqst_w0.cmd = ELS_RDF; 5507 break; 5508 default: 5509 return 1; 5510 } 5511 if (ndlp->nlp_flag & NLP_LOGO_ACC) { 5512 spin_lock_irq(&ndlp->lock); 5513 if (!(ndlp->nlp_flag & NLP_RPI_REGISTERED || 5514 ndlp->nlp_flag & NLP_REG_LOGIN_SEND)) 5515 ndlp->nlp_flag &= ~NLP_LOGO_ACC; 5516 spin_unlock_irq(&ndlp->lock); 5517 elsiocb->iocb_cmpl = lpfc_cmpl_els_logo_acc; 5518 } else { 5519 elsiocb->iocb_cmpl = lpfc_cmpl_els_rsp; 5520 } 5521 5522 phba->fc_stat.elsXmitACC++; 5523 elsiocb->context1 = lpfc_nlp_get(ndlp); 5524 if (!elsiocb->context1) { 5525 lpfc_els_free_iocb(phba, elsiocb); 5526 return 1; 5527 } 5528 5529 rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0); 5530 if (rc == IOCB_ERROR) { 5531 lpfc_els_free_iocb(phba, elsiocb); 5532 lpfc_nlp_put(ndlp); 5533 return 1; 5534 } 5535 5536 /* Xmit ELS ACC response tag <ulpIoTag> */ 5537 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, 5538 "0128 Xmit ELS ACC response Status: x%x, IoTag: x%x, " 5539 "XRI: x%x, DID: x%x, nlp_flag: x%x nlp_state: x%x " 5540 "RPI: x%x, fc_flag x%x refcnt %d\n", 5541 rc, elsiocb->iotag, elsiocb->sli4_xritag, 5542 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state, 5543 ndlp->nlp_rpi, vport->fc_flag, kref_read(&ndlp->kref)); 5544 return 0; 5545 } 5546 5547 /** 5548 * lpfc_els_rsp_reject - Prepare and issue a rjt response iocb command 5549 * @vport: pointer to a virtual N_Port data structure. 5550 * @rejectError: reject response to issue 5551 * @oldiocb: pointer to the original lpfc command iocb data structure. 5552 * @ndlp: pointer to a node-list data structure. 5553 * @mbox: pointer to the driver internal queue element for mailbox command. 5554 * 5555 * This routine prepares and issue an Reject (RJT) response IOCB 5556 * command. If a @mbox pointer is passed in, it will be put into the 5557 * context_un.mbox field of the IOCB for the completion callback function 5558 * to issue to the HBA later. 5559 * 5560 * Note that the ndlp reference count will be incremented by 1 for holding the 5561 * ndlp and the reference to ndlp will be stored into the context1 field of 5562 * the IOCB for the completion callback function to the reject response 5563 * ELS IOCB command. 5564 * 5565 * Return code 5566 * 0 - Successfully issued reject response 5567 * 1 - Failed to issue reject response 5568 **/ 5569 int 5570 lpfc_els_rsp_reject(struct lpfc_vport *vport, uint32_t rejectError, 5571 struct lpfc_iocbq *oldiocb, struct lpfc_nodelist *ndlp, 5572 LPFC_MBOXQ_t *mbox) 5573 { 5574 int rc; 5575 struct lpfc_hba *phba = vport->phba; 5576 IOCB_t *icmd; 5577 IOCB_t *oldcmd; 5578 struct lpfc_iocbq *elsiocb; 5579 uint8_t *pcmd; 5580 uint16_t cmdsize; 5581 5582 cmdsize = 2 * sizeof(uint32_t); 5583 elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry, ndlp, 5584 ndlp->nlp_DID, ELS_CMD_LS_RJT); 5585 if (!elsiocb) 5586 return 1; 5587 5588 icmd = &elsiocb->iocb; 5589 oldcmd = &oldiocb->iocb; 5590 icmd->ulpContext = oldcmd->ulpContext; /* Xri / rx_id */ 5591 icmd->unsli3.rcvsli3.ox_id = oldcmd->unsli3.rcvsli3.ox_id; 5592 pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt); 5593 5594 *((uint32_t *) (pcmd)) = ELS_CMD_LS_RJT; 5595 pcmd += sizeof(uint32_t); 5596 *((uint32_t *) (pcmd)) = rejectError; 5597 5598 if (mbox) 5599 elsiocb->context_un.mbox = mbox; 5600 5601 /* Xmit ELS RJT <err> response tag <ulpIoTag> */ 5602 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, 5603 "0129 Xmit ELS RJT x%x response tag x%x " 5604 "xri x%x, did x%x, nlp_flag x%x, nlp_state x%x, " 5605 "rpi x%x\n", 5606 rejectError, elsiocb->iotag, 5607 elsiocb->iocb.ulpContext, ndlp->nlp_DID, 5608 ndlp->nlp_flag, ndlp->nlp_state, ndlp->nlp_rpi); 5609 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP, 5610 "Issue LS_RJT: did:x%x flg:x%x err:x%x", 5611 ndlp->nlp_DID, ndlp->nlp_flag, rejectError); 5612 5613 phba->fc_stat.elsXmitLSRJT++; 5614 elsiocb->iocb_cmpl = lpfc_cmpl_els_rsp; 5615 elsiocb->context1 = lpfc_nlp_get(ndlp); 5616 if (!elsiocb->context1) { 5617 lpfc_els_free_iocb(phba, elsiocb); 5618 return 1; 5619 } 5620 5621 /* The NPIV instance is rejecting this unsolicited ELS. Make sure the 5622 * node's assigned RPI gets released provided this node is not already 5623 * registered with the transport. 5624 */ 5625 if (phba->sli_rev == LPFC_SLI_REV4 && 5626 vport->port_type == LPFC_NPIV_PORT && 5627 !(ndlp->fc4_xpt_flags & SCSI_XPT_REGD)) { 5628 spin_lock_irq(&ndlp->lock); 5629 ndlp->nlp_flag |= NLP_RELEASE_RPI; 5630 spin_unlock_irq(&ndlp->lock); 5631 } 5632 5633 rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0); 5634 if (rc == IOCB_ERROR) { 5635 lpfc_els_free_iocb(phba, elsiocb); 5636 lpfc_nlp_put(ndlp); 5637 return 1; 5638 } 5639 5640 return 0; 5641 } 5642 5643 /** 5644 * lpfc_issue_els_edc_rsp - Exchange Diagnostic Capabilities with the fabric. 5645 * @vport: pointer to a host virtual N_Port data structure. 5646 * @cmdiocb: pointer to the original lpfc command iocb data structure. 5647 * @ndlp: NPort to where rsp is directed 5648 * 5649 * This routine issues an EDC ACC RSP to the F-Port Controller to communicate 5650 * this N_Port's support of hardware signals in its Congestion 5651 * Capabilities Descriptor. 5652 * 5653 * Return code 5654 * 0 - Successfully issued edc rsp command 5655 * 1 - Failed to issue edc rsp command 5656 **/ 5657 static int 5658 lpfc_issue_els_edc_rsp(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb, 5659 struct lpfc_nodelist *ndlp) 5660 { 5661 struct lpfc_hba *phba = vport->phba; 5662 struct lpfc_els_edc_rsp *edc_rsp; 5663 struct lpfc_iocbq *elsiocb; 5664 IOCB_t *icmd, *cmd; 5665 uint8_t *pcmd; 5666 int cmdsize, rc; 5667 5668 cmdsize = sizeof(struct lpfc_els_edc_rsp); 5669 elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, cmdiocb->retry, 5670 ndlp, ndlp->nlp_DID, ELS_CMD_ACC); 5671 if (!elsiocb) 5672 return 1; 5673 5674 icmd = &elsiocb->iocb; 5675 cmd = &cmdiocb->iocb; 5676 icmd->ulpContext = cmd->ulpContext; /* Xri / rx_id */ 5677 icmd->unsli3.rcvsli3.ox_id = cmd->unsli3.rcvsli3.ox_id; 5678 pcmd = (((struct lpfc_dmabuf *)elsiocb->context2)->virt); 5679 memset(pcmd, 0, cmdsize); 5680 5681 edc_rsp = (struct lpfc_els_edc_rsp *)pcmd; 5682 edc_rsp->edc_rsp.acc_hdr.la_cmd = ELS_LS_ACC; 5683 edc_rsp->edc_rsp.desc_list_len = cpu_to_be32( 5684 FC_TLV_DESC_LENGTH_FROM_SZ(struct lpfc_els_edc_rsp)); 5685 edc_rsp->edc_rsp.lsri.desc_tag = cpu_to_be32(ELS_DTAG_LS_REQ_INFO); 5686 edc_rsp->edc_rsp.lsri.desc_len = cpu_to_be32( 5687 FC_TLV_DESC_LENGTH_FROM_SZ(struct fc_els_lsri_desc)); 5688 edc_rsp->edc_rsp.lsri.rqst_w0.cmd = ELS_EDC; 5689 lpfc_format_edc_cgn_desc(phba, &edc_rsp->cgn_desc); 5690 5691 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP, 5692 "Issue EDC ACC: did:x%x flg:x%x refcnt %d", 5693 ndlp->nlp_DID, ndlp->nlp_flag, 5694 kref_read(&ndlp->kref)); 5695 elsiocb->iocb_cmpl = lpfc_cmpl_els_rsp; 5696 5697 phba->fc_stat.elsXmitACC++; 5698 elsiocb->context1 = lpfc_nlp_get(ndlp); 5699 if (!elsiocb->context1) { 5700 lpfc_els_free_iocb(phba, elsiocb); 5701 return 1; 5702 } 5703 5704 rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0); 5705 if (rc == IOCB_ERROR) { 5706 lpfc_els_free_iocb(phba, elsiocb); 5707 lpfc_nlp_put(ndlp); 5708 return 1; 5709 } 5710 5711 /* Xmit ELS ACC response tag <ulpIoTag> */ 5712 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, 5713 "0152 Xmit EDC ACC response Status: x%x, IoTag: x%x, " 5714 "XRI: x%x, DID: x%x, nlp_flag: x%x nlp_state: x%x " 5715 "RPI: x%x, fc_flag x%x\n", 5716 rc, elsiocb->iotag, elsiocb->sli4_xritag, 5717 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state, 5718 ndlp->nlp_rpi, vport->fc_flag); 5719 5720 return 0; 5721 } 5722 5723 /** 5724 * lpfc_els_rsp_adisc_acc - Prepare and issue acc response to adisc iocb cmd 5725 * @vport: pointer to a virtual N_Port data structure. 5726 * @oldiocb: pointer to the original lpfc command iocb data structure. 5727 * @ndlp: pointer to a node-list data structure. 5728 * 5729 * This routine prepares and issues an Accept (ACC) response to Address 5730 * Discover (ADISC) ELS command. It simply prepares the payload of the IOCB 5731 * and invokes the lpfc_sli_issue_iocb() routine to send out the command. 5732 * 5733 * Note that the ndlp reference count will be incremented by 1 for holding the 5734 * ndlp and the reference to ndlp will be stored into the context1 field of 5735 * the IOCB for the completion callback function to the ADISC Accept response 5736 * ELS IOCB command. 5737 * 5738 * Return code 5739 * 0 - Successfully issued acc adisc response 5740 * 1 - Failed to issue adisc acc response 5741 **/ 5742 int 5743 lpfc_els_rsp_adisc_acc(struct lpfc_vport *vport, struct lpfc_iocbq *oldiocb, 5744 struct lpfc_nodelist *ndlp) 5745 { 5746 struct lpfc_hba *phba = vport->phba; 5747 ADISC *ap; 5748 IOCB_t *icmd, *oldcmd; 5749 struct lpfc_iocbq *elsiocb; 5750 uint8_t *pcmd; 5751 uint16_t cmdsize; 5752 int rc; 5753 5754 cmdsize = sizeof(uint32_t) + sizeof(ADISC); 5755 elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry, ndlp, 5756 ndlp->nlp_DID, ELS_CMD_ACC); 5757 if (!elsiocb) 5758 return 1; 5759 5760 icmd = &elsiocb->iocb; 5761 oldcmd = &oldiocb->iocb; 5762 icmd->ulpContext = oldcmd->ulpContext; /* Xri / rx_id */ 5763 icmd->unsli3.rcvsli3.ox_id = oldcmd->unsli3.rcvsli3.ox_id; 5764 5765 /* Xmit ADISC ACC response tag <ulpIoTag> */ 5766 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, 5767 "0130 Xmit ADISC ACC response iotag x%x xri: " 5768 "x%x, did x%x, nlp_flag x%x, nlp_state x%x rpi x%x\n", 5769 elsiocb->iotag, elsiocb->iocb.ulpContext, 5770 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state, 5771 ndlp->nlp_rpi); 5772 pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt); 5773 5774 *((uint32_t *) (pcmd)) = ELS_CMD_ACC; 5775 pcmd += sizeof(uint32_t); 5776 5777 ap = (ADISC *) (pcmd); 5778 ap->hardAL_PA = phba->fc_pref_ALPA; 5779 memcpy(&ap->portName, &vport->fc_portname, sizeof(struct lpfc_name)); 5780 memcpy(&ap->nodeName, &vport->fc_nodename, sizeof(struct lpfc_name)); 5781 ap->DID = be32_to_cpu(vport->fc_myDID); 5782 5783 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP, 5784 "Issue ACC ADISC: did:x%x flg:x%x refcnt %d", 5785 ndlp->nlp_DID, ndlp->nlp_flag, kref_read(&ndlp->kref)); 5786 5787 phba->fc_stat.elsXmitACC++; 5788 elsiocb->iocb_cmpl = lpfc_cmpl_els_rsp; 5789 elsiocb->context1 = lpfc_nlp_get(ndlp); 5790 if (!elsiocb->context1) { 5791 lpfc_els_free_iocb(phba, elsiocb); 5792 return 1; 5793 } 5794 5795 rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0); 5796 if (rc == IOCB_ERROR) { 5797 lpfc_els_free_iocb(phba, elsiocb); 5798 lpfc_nlp_put(ndlp); 5799 return 1; 5800 } 5801 5802 /* Xmit ELS ACC response tag <ulpIoTag> */ 5803 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, 5804 "0128 Xmit ELS ACC response Status: x%x, IoTag: x%x, " 5805 "XRI: x%x, DID: x%x, nlp_flag: x%x nlp_state: x%x " 5806 "RPI: x%x, fc_flag x%x\n", 5807 rc, elsiocb->iotag, elsiocb->sli4_xritag, 5808 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state, 5809 ndlp->nlp_rpi, vport->fc_flag); 5810 return 0; 5811 } 5812 5813 /** 5814 * lpfc_els_rsp_prli_acc - Prepare and issue acc response to prli iocb cmd 5815 * @vport: pointer to a virtual N_Port data structure. 5816 * @oldiocb: pointer to the original lpfc command iocb data structure. 5817 * @ndlp: pointer to a node-list data structure. 5818 * 5819 * This routine prepares and issues an Accept (ACC) response to Process 5820 * Login (PRLI) ELS command. It simply prepares the payload of the IOCB 5821 * and invokes the lpfc_sli_issue_iocb() routine to send out the command. 5822 * 5823 * Note that the ndlp reference count will be incremented by 1 for holding the 5824 * ndlp and the reference to ndlp will be stored into the context1 field of 5825 * the IOCB for the completion callback function to the PRLI Accept response 5826 * ELS IOCB command. 5827 * 5828 * Return code 5829 * 0 - Successfully issued acc prli response 5830 * 1 - Failed to issue acc prli response 5831 **/ 5832 int 5833 lpfc_els_rsp_prli_acc(struct lpfc_vport *vport, struct lpfc_iocbq *oldiocb, 5834 struct lpfc_nodelist *ndlp) 5835 { 5836 struct lpfc_hba *phba = vport->phba; 5837 PRLI *npr; 5838 struct lpfc_nvme_prli *npr_nvme; 5839 lpfc_vpd_t *vpd; 5840 IOCB_t *icmd; 5841 IOCB_t *oldcmd; 5842 struct lpfc_iocbq *elsiocb; 5843 uint8_t *pcmd; 5844 uint16_t cmdsize; 5845 uint32_t prli_fc4_req, *req_payload; 5846 struct lpfc_dmabuf *req_buf; 5847 int rc; 5848 u32 elsrspcmd; 5849 5850 /* Need the incoming PRLI payload to determine if the ACC is for an 5851 * FC4 or NVME PRLI type. The PRLI type is at word 1. 5852 */ 5853 req_buf = (struct lpfc_dmabuf *)oldiocb->context2; 5854 req_payload = (((uint32_t *)req_buf->virt) + 1); 5855 5856 /* PRLI type payload is at byte 3 for FCP or NVME. */ 5857 prli_fc4_req = be32_to_cpu(*req_payload); 5858 prli_fc4_req = (prli_fc4_req >> 24) & 0xff; 5859 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, 5860 "6127 PRLI_ACC: Req Type x%x, Word1 x%08x\n", 5861 prli_fc4_req, *((uint32_t *)req_payload)); 5862 5863 if (prli_fc4_req == PRLI_FCP_TYPE) { 5864 cmdsize = sizeof(uint32_t) + sizeof(PRLI); 5865 elsrspcmd = (ELS_CMD_ACC | (ELS_CMD_PRLI & ~ELS_RSP_MASK)); 5866 } else if (prli_fc4_req & PRLI_NVME_TYPE) { 5867 cmdsize = sizeof(uint32_t) + sizeof(struct lpfc_nvme_prli); 5868 elsrspcmd = (ELS_CMD_ACC | (ELS_CMD_NVMEPRLI & ~ELS_RSP_MASK)); 5869 } else { 5870 return 1; 5871 } 5872 5873 elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry, ndlp, 5874 ndlp->nlp_DID, elsrspcmd); 5875 if (!elsiocb) 5876 return 1; 5877 5878 icmd = &elsiocb->iocb; 5879 oldcmd = &oldiocb->iocb; 5880 icmd->ulpContext = oldcmd->ulpContext; /* Xri / rx_id */ 5881 icmd->unsli3.rcvsli3.ox_id = oldcmd->unsli3.rcvsli3.ox_id; 5882 5883 /* Xmit PRLI ACC response tag <ulpIoTag> */ 5884 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, 5885 "0131 Xmit PRLI ACC response tag x%x xri x%x, " 5886 "did x%x, nlp_flag x%x, nlp_state x%x, rpi x%x\n", 5887 elsiocb->iotag, elsiocb->iocb.ulpContext, 5888 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state, 5889 ndlp->nlp_rpi); 5890 pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt); 5891 memset(pcmd, 0, cmdsize); 5892 5893 *((uint32_t *)(pcmd)) = elsrspcmd; 5894 pcmd += sizeof(uint32_t); 5895 5896 /* For PRLI, remainder of payload is PRLI parameter page */ 5897 vpd = &phba->vpd; 5898 5899 if (prli_fc4_req == PRLI_FCP_TYPE) { 5900 /* 5901 * If the remote port is a target and our firmware version 5902 * is 3.20 or later, set the following bits for FC-TAPE 5903 * support. 5904 */ 5905 npr = (PRLI *) pcmd; 5906 if ((ndlp->nlp_type & NLP_FCP_TARGET) && 5907 (vpd->rev.feaLevelHigh >= 0x02)) { 5908 npr->ConfmComplAllowed = 1; 5909 npr->Retry = 1; 5910 npr->TaskRetryIdReq = 1; 5911 } 5912 npr->acceptRspCode = PRLI_REQ_EXECUTED; 5913 npr->estabImagePair = 1; 5914 npr->readXferRdyDis = 1; 5915 npr->ConfmComplAllowed = 1; 5916 npr->prliType = PRLI_FCP_TYPE; 5917 npr->initiatorFunc = 1; 5918 } else if (prli_fc4_req & PRLI_NVME_TYPE) { 5919 /* Respond with an NVME PRLI Type */ 5920 npr_nvme = (struct lpfc_nvme_prli *) pcmd; 5921 bf_set(prli_type_code, npr_nvme, PRLI_NVME_TYPE); 5922 bf_set(prli_estabImagePair, npr_nvme, 0); /* Should be 0 */ 5923 bf_set(prli_acc_rsp_code, npr_nvme, PRLI_REQ_EXECUTED); 5924 if (phba->nvmet_support) { 5925 bf_set(prli_tgt, npr_nvme, 1); 5926 bf_set(prli_disc, npr_nvme, 1); 5927 if (phba->cfg_nvme_enable_fb) { 5928 bf_set(prli_fba, npr_nvme, 1); 5929 5930 /* TBD. Target mode needs to post buffers 5931 * that support the configured first burst 5932 * byte size. 5933 */ 5934 bf_set(prli_fb_sz, npr_nvme, 5935 phba->cfg_nvmet_fb_size); 5936 } 5937 } else { 5938 bf_set(prli_init, npr_nvme, 1); 5939 } 5940 5941 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_DISC, 5942 "6015 NVME issue PRLI ACC word1 x%08x " 5943 "word4 x%08x word5 x%08x flag x%x, " 5944 "fcp_info x%x nlp_type x%x\n", 5945 npr_nvme->word1, npr_nvme->word4, 5946 npr_nvme->word5, ndlp->nlp_flag, 5947 ndlp->nlp_fcp_info, ndlp->nlp_type); 5948 npr_nvme->word1 = cpu_to_be32(npr_nvme->word1); 5949 npr_nvme->word4 = cpu_to_be32(npr_nvme->word4); 5950 npr_nvme->word5 = cpu_to_be32(npr_nvme->word5); 5951 } else 5952 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, 5953 "6128 Unknown FC_TYPE x%x x%x ndlp x%06x\n", 5954 prli_fc4_req, ndlp->nlp_fc4_type, 5955 ndlp->nlp_DID); 5956 5957 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP, 5958 "Issue ACC PRLI: did:x%x flg:x%x", 5959 ndlp->nlp_DID, ndlp->nlp_flag, kref_read(&ndlp->kref)); 5960 5961 phba->fc_stat.elsXmitACC++; 5962 elsiocb->iocb_cmpl = lpfc_cmpl_els_rsp; 5963 elsiocb->context1 = lpfc_nlp_get(ndlp); 5964 if (!elsiocb->context1) { 5965 lpfc_els_free_iocb(phba, elsiocb); 5966 return 1; 5967 } 5968 5969 rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0); 5970 if (rc == IOCB_ERROR) { 5971 lpfc_els_free_iocb(phba, elsiocb); 5972 lpfc_nlp_put(ndlp); 5973 return 1; 5974 } 5975 5976 return 0; 5977 } 5978 5979 /** 5980 * lpfc_els_rsp_rnid_acc - Issue rnid acc response iocb command 5981 * @vport: pointer to a virtual N_Port data structure. 5982 * @format: rnid command format. 5983 * @oldiocb: pointer to the original lpfc command iocb data structure. 5984 * @ndlp: pointer to a node-list data structure. 5985 * 5986 * This routine issues a Request Node Identification Data (RNID) Accept 5987 * (ACC) response. It constructs the RNID ACC response command according to 5988 * the proper @format and then calls the lpfc_sli_issue_iocb() routine to 5989 * issue the response. 5990 * 5991 * Note that the ndlp reference count will be incremented by 1 for holding the 5992 * ndlp and the reference to ndlp will be stored into the context1 field of 5993 * the IOCB for the completion callback function. 5994 * 5995 * Return code 5996 * 0 - Successfully issued acc rnid response 5997 * 1 - Failed to issue acc rnid response 5998 **/ 5999 static int 6000 lpfc_els_rsp_rnid_acc(struct lpfc_vport *vport, uint8_t format, 6001 struct lpfc_iocbq *oldiocb, struct lpfc_nodelist *ndlp) 6002 { 6003 struct lpfc_hba *phba = vport->phba; 6004 RNID *rn; 6005 IOCB_t *icmd, *oldcmd; 6006 struct lpfc_iocbq *elsiocb; 6007 uint8_t *pcmd; 6008 uint16_t cmdsize; 6009 int rc; 6010 6011 cmdsize = sizeof(uint32_t) + sizeof(uint32_t) 6012 + (2 * sizeof(struct lpfc_name)); 6013 if (format) 6014 cmdsize += sizeof(RNID_TOP_DISC); 6015 6016 elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry, ndlp, 6017 ndlp->nlp_DID, ELS_CMD_ACC); 6018 if (!elsiocb) 6019 return 1; 6020 6021 icmd = &elsiocb->iocb; 6022 oldcmd = &oldiocb->iocb; 6023 icmd->ulpContext = oldcmd->ulpContext; /* Xri / rx_id */ 6024 icmd->unsli3.rcvsli3.ox_id = oldcmd->unsli3.rcvsli3.ox_id; 6025 6026 /* Xmit RNID ACC response tag <ulpIoTag> */ 6027 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, 6028 "0132 Xmit RNID ACC response tag x%x xri x%x\n", 6029 elsiocb->iotag, elsiocb->iocb.ulpContext); 6030 pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt); 6031 *((uint32_t *) (pcmd)) = ELS_CMD_ACC; 6032 pcmd += sizeof(uint32_t); 6033 6034 memset(pcmd, 0, sizeof(RNID)); 6035 rn = (RNID *) (pcmd); 6036 rn->Format = format; 6037 rn->CommonLen = (2 * sizeof(struct lpfc_name)); 6038 memcpy(&rn->portName, &vport->fc_portname, sizeof(struct lpfc_name)); 6039 memcpy(&rn->nodeName, &vport->fc_nodename, sizeof(struct lpfc_name)); 6040 switch (format) { 6041 case 0: 6042 rn->SpecificLen = 0; 6043 break; 6044 case RNID_TOPOLOGY_DISC: 6045 rn->SpecificLen = sizeof(RNID_TOP_DISC); 6046 memcpy(&rn->un.topologyDisc.portName, 6047 &vport->fc_portname, sizeof(struct lpfc_name)); 6048 rn->un.topologyDisc.unitType = RNID_HBA; 6049 rn->un.topologyDisc.physPort = 0; 6050 rn->un.topologyDisc.attachedNodes = 0; 6051 break; 6052 default: 6053 rn->CommonLen = 0; 6054 rn->SpecificLen = 0; 6055 break; 6056 } 6057 6058 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP, 6059 "Issue ACC RNID: did:x%x flg:x%x refcnt %d", 6060 ndlp->nlp_DID, ndlp->nlp_flag, kref_read(&ndlp->kref)); 6061 6062 phba->fc_stat.elsXmitACC++; 6063 elsiocb->iocb_cmpl = lpfc_cmpl_els_rsp; 6064 elsiocb->context1 = lpfc_nlp_get(ndlp); 6065 if (!elsiocb->context1) { 6066 lpfc_els_free_iocb(phba, elsiocb); 6067 return 1; 6068 } 6069 6070 rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0); 6071 if (rc == IOCB_ERROR) { 6072 lpfc_els_free_iocb(phba, elsiocb); 6073 lpfc_nlp_put(ndlp); 6074 return 1; 6075 } 6076 6077 return 0; 6078 } 6079 6080 /** 6081 * lpfc_els_clear_rrq - Clear the rq that this rrq describes. 6082 * @vport: pointer to a virtual N_Port data structure. 6083 * @iocb: pointer to the lpfc command iocb data structure. 6084 * @ndlp: pointer to a node-list data structure. 6085 * 6086 * Return 6087 **/ 6088 static void 6089 lpfc_els_clear_rrq(struct lpfc_vport *vport, 6090 struct lpfc_iocbq *iocb, struct lpfc_nodelist *ndlp) 6091 { 6092 struct lpfc_hba *phba = vport->phba; 6093 uint8_t *pcmd; 6094 struct RRQ *rrq; 6095 uint16_t rxid; 6096 uint16_t xri; 6097 struct lpfc_node_rrq *prrq; 6098 6099 6100 pcmd = (uint8_t *) (((struct lpfc_dmabuf *) iocb->context2)->virt); 6101 pcmd += sizeof(uint32_t); 6102 rrq = (struct RRQ *)pcmd; 6103 rrq->rrq_exchg = be32_to_cpu(rrq->rrq_exchg); 6104 rxid = bf_get(rrq_rxid, rrq); 6105 6106 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, 6107 "2883 Clear RRQ for SID:x%x OXID:x%x RXID:x%x" 6108 " x%x x%x\n", 6109 be32_to_cpu(bf_get(rrq_did, rrq)), 6110 bf_get(rrq_oxid, rrq), 6111 rxid, 6112 iocb->iotag, iocb->iocb.ulpContext); 6113 6114 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP, 6115 "Clear RRQ: did:x%x flg:x%x exchg:x%.08x", 6116 ndlp->nlp_DID, ndlp->nlp_flag, rrq->rrq_exchg); 6117 if (vport->fc_myDID == be32_to_cpu(bf_get(rrq_did, rrq))) 6118 xri = bf_get(rrq_oxid, rrq); 6119 else 6120 xri = rxid; 6121 prrq = lpfc_get_active_rrq(vport, xri, ndlp->nlp_DID); 6122 if (prrq) 6123 lpfc_clr_rrq_active(phba, xri, prrq); 6124 return; 6125 } 6126 6127 /** 6128 * lpfc_els_rsp_echo_acc - Issue echo acc response 6129 * @vport: pointer to a virtual N_Port data structure. 6130 * @data: pointer to echo data to return in the accept. 6131 * @oldiocb: pointer to the original lpfc command iocb data structure. 6132 * @ndlp: pointer to a node-list data structure. 6133 * 6134 * Return code 6135 * 0 - Successfully issued acc echo response 6136 * 1 - Failed to issue acc echo response 6137 **/ 6138 static int 6139 lpfc_els_rsp_echo_acc(struct lpfc_vport *vport, uint8_t *data, 6140 struct lpfc_iocbq *oldiocb, struct lpfc_nodelist *ndlp) 6141 { 6142 struct lpfc_hba *phba = vport->phba; 6143 struct lpfc_iocbq *elsiocb; 6144 uint8_t *pcmd; 6145 uint16_t cmdsize; 6146 int rc; 6147 6148 cmdsize = oldiocb->iocb.unsli3.rcvsli3.acc_len; 6149 6150 /* The accumulated length can exceed the BPL_SIZE. For 6151 * now, use this as the limit 6152 */ 6153 if (cmdsize > LPFC_BPL_SIZE) 6154 cmdsize = LPFC_BPL_SIZE; 6155 elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry, ndlp, 6156 ndlp->nlp_DID, ELS_CMD_ACC); 6157 if (!elsiocb) 6158 return 1; 6159 6160 elsiocb->iocb.ulpContext = oldiocb->iocb.ulpContext; /* Xri / rx_id */ 6161 elsiocb->iocb.unsli3.rcvsli3.ox_id = oldiocb->iocb.unsli3.rcvsli3.ox_id; 6162 6163 /* Xmit ECHO ACC response tag <ulpIoTag> */ 6164 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, 6165 "2876 Xmit ECHO ACC response tag x%x xri x%x\n", 6166 elsiocb->iotag, elsiocb->iocb.ulpContext); 6167 pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt); 6168 *((uint32_t *) (pcmd)) = ELS_CMD_ACC; 6169 pcmd += sizeof(uint32_t); 6170 memcpy(pcmd, data, cmdsize - sizeof(uint32_t)); 6171 6172 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP, 6173 "Issue ACC ECHO: did:x%x flg:x%x refcnt %d", 6174 ndlp->nlp_DID, ndlp->nlp_flag, kref_read(&ndlp->kref)); 6175 6176 phba->fc_stat.elsXmitACC++; 6177 elsiocb->iocb_cmpl = lpfc_cmpl_els_rsp; 6178 elsiocb->context1 = lpfc_nlp_get(ndlp); 6179 if (!elsiocb->context1) { 6180 lpfc_els_free_iocb(phba, elsiocb); 6181 return 1; 6182 } 6183 6184 rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0); 6185 if (rc == IOCB_ERROR) { 6186 lpfc_els_free_iocb(phba, elsiocb); 6187 lpfc_nlp_put(ndlp); 6188 return 1; 6189 } 6190 6191 return 0; 6192 } 6193 6194 /** 6195 * lpfc_els_disc_adisc - Issue remaining adisc iocbs to npr nodes of a vport 6196 * @vport: pointer to a host virtual N_Port data structure. 6197 * 6198 * This routine issues Address Discover (ADISC) ELS commands to those 6199 * N_Ports which are in node port recovery state and ADISC has not been issued 6200 * for the @vport. Each time an ELS ADISC IOCB is issued by invoking the 6201 * lpfc_issue_els_adisc() routine, the per @vport number of discover count 6202 * (num_disc_nodes) shall be incremented. If the num_disc_nodes reaches a 6203 * pre-configured threshold (cfg_discovery_threads), the @vport fc_flag will 6204 * be marked with FC_NLP_MORE bit and the process of issuing remaining ADISC 6205 * IOCBs quit for later pick up. On the other hand, after walking through 6206 * all the ndlps with the @vport and there is none ADISC IOCB issued, the 6207 * @vport fc_flag shall be cleared with FC_NLP_MORE bit indicating there is 6208 * no more ADISC need to be sent. 6209 * 6210 * Return code 6211 * The number of N_Ports with adisc issued. 6212 **/ 6213 int 6214 lpfc_els_disc_adisc(struct lpfc_vport *vport) 6215 { 6216 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 6217 struct lpfc_nodelist *ndlp, *next_ndlp; 6218 int sentadisc = 0; 6219 6220 /* go thru NPR nodes and issue any remaining ELS ADISCs */ 6221 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) { 6222 6223 if (ndlp->nlp_state != NLP_STE_NPR_NODE || 6224 !(ndlp->nlp_flag & NLP_NPR_ADISC)) 6225 continue; 6226 6227 spin_lock_irq(&ndlp->lock); 6228 ndlp->nlp_flag &= ~NLP_NPR_ADISC; 6229 spin_unlock_irq(&ndlp->lock); 6230 6231 if (!(ndlp->nlp_flag & NLP_NPR_2B_DISC)) { 6232 /* This node was marked for ADISC but was not picked 6233 * for discovery. This is possible if the node was 6234 * missing in gidft response. 6235 * 6236 * At time of marking node for ADISC, we skipped unreg 6237 * from backend 6238 */ 6239 lpfc_nlp_unreg_node(vport, ndlp); 6240 lpfc_unreg_rpi(vport, ndlp); 6241 continue; 6242 } 6243 6244 ndlp->nlp_prev_state = ndlp->nlp_state; 6245 lpfc_nlp_set_state(vport, ndlp, NLP_STE_ADISC_ISSUE); 6246 lpfc_issue_els_adisc(vport, ndlp, 0); 6247 sentadisc++; 6248 vport->num_disc_nodes++; 6249 if (vport->num_disc_nodes >= 6250 vport->cfg_discovery_threads) { 6251 spin_lock_irq(shost->host_lock); 6252 vport->fc_flag |= FC_NLP_MORE; 6253 spin_unlock_irq(shost->host_lock); 6254 break; 6255 } 6256 6257 } 6258 if (sentadisc == 0) { 6259 spin_lock_irq(shost->host_lock); 6260 vport->fc_flag &= ~FC_NLP_MORE; 6261 spin_unlock_irq(shost->host_lock); 6262 } 6263 return sentadisc; 6264 } 6265 6266 /** 6267 * lpfc_els_disc_plogi - Issue plogi for all npr nodes of a vport before adisc 6268 * @vport: pointer to a host virtual N_Port data structure. 6269 * 6270 * This routine issues Port Login (PLOGI) ELS commands to all the N_Ports 6271 * which are in node port recovery state, with a @vport. Each time an ELS 6272 * ADISC PLOGI IOCB is issued by invoking the lpfc_issue_els_plogi() routine, 6273 * the per @vport number of discover count (num_disc_nodes) shall be 6274 * incremented. If the num_disc_nodes reaches a pre-configured threshold 6275 * (cfg_discovery_threads), the @vport fc_flag will be marked with FC_NLP_MORE 6276 * bit set and quit the process of issuing remaining ADISC PLOGIN IOCBs for 6277 * later pick up. On the other hand, after walking through all the ndlps with 6278 * the @vport and there is none ADISC PLOGI IOCB issued, the @vport fc_flag 6279 * shall be cleared with the FC_NLP_MORE bit indicating there is no more ADISC 6280 * PLOGI need to be sent. 6281 * 6282 * Return code 6283 * The number of N_Ports with plogi issued. 6284 **/ 6285 int 6286 lpfc_els_disc_plogi(struct lpfc_vport *vport) 6287 { 6288 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 6289 struct lpfc_nodelist *ndlp, *next_ndlp; 6290 int sentplogi = 0; 6291 6292 /* go thru NPR nodes and issue any remaining ELS PLOGIs */ 6293 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) { 6294 if (ndlp->nlp_state == NLP_STE_NPR_NODE && 6295 (ndlp->nlp_flag & NLP_NPR_2B_DISC) != 0 && 6296 (ndlp->nlp_flag & NLP_DELAY_TMO) == 0 && 6297 (ndlp->nlp_flag & NLP_NPR_ADISC) == 0) { 6298 ndlp->nlp_prev_state = ndlp->nlp_state; 6299 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE); 6300 lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0); 6301 sentplogi++; 6302 vport->num_disc_nodes++; 6303 if (vport->num_disc_nodes >= 6304 vport->cfg_discovery_threads) { 6305 spin_lock_irq(shost->host_lock); 6306 vport->fc_flag |= FC_NLP_MORE; 6307 spin_unlock_irq(shost->host_lock); 6308 break; 6309 } 6310 } 6311 } 6312 6313 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, 6314 "6452 Discover PLOGI %d flag x%x\n", 6315 sentplogi, vport->fc_flag); 6316 6317 if (sentplogi) { 6318 lpfc_set_disctmo(vport); 6319 } 6320 else { 6321 spin_lock_irq(shost->host_lock); 6322 vport->fc_flag &= ~FC_NLP_MORE; 6323 spin_unlock_irq(shost->host_lock); 6324 } 6325 return sentplogi; 6326 } 6327 6328 static uint32_t 6329 lpfc_rdp_res_link_service(struct fc_rdp_link_service_desc *desc, 6330 uint32_t word0) 6331 { 6332 6333 desc->tag = cpu_to_be32(RDP_LINK_SERVICE_DESC_TAG); 6334 desc->payload.els_req = word0; 6335 desc->length = cpu_to_be32(sizeof(desc->payload)); 6336 6337 return sizeof(struct fc_rdp_link_service_desc); 6338 } 6339 6340 static uint32_t 6341 lpfc_rdp_res_sfp_desc(struct fc_rdp_sfp_desc *desc, 6342 uint8_t *page_a0, uint8_t *page_a2) 6343 { 6344 uint16_t wavelength; 6345 uint16_t temperature; 6346 uint16_t rx_power; 6347 uint16_t tx_bias; 6348 uint16_t tx_power; 6349 uint16_t vcc; 6350 uint16_t flag = 0; 6351 struct sff_trasnceiver_codes_byte4 *trasn_code_byte4; 6352 struct sff_trasnceiver_codes_byte5 *trasn_code_byte5; 6353 6354 desc->tag = cpu_to_be32(RDP_SFP_DESC_TAG); 6355 6356 trasn_code_byte4 = (struct sff_trasnceiver_codes_byte4 *) 6357 &page_a0[SSF_TRANSCEIVER_CODE_B4]; 6358 trasn_code_byte5 = (struct sff_trasnceiver_codes_byte5 *) 6359 &page_a0[SSF_TRANSCEIVER_CODE_B5]; 6360 6361 if ((trasn_code_byte4->fc_sw_laser) || 6362 (trasn_code_byte5->fc_sw_laser_sl) || 6363 (trasn_code_byte5->fc_sw_laser_sn)) { /* check if its short WL */ 6364 flag |= (SFP_FLAG_PT_SWLASER << SFP_FLAG_PT_SHIFT); 6365 } else if (trasn_code_byte4->fc_lw_laser) { 6366 wavelength = (page_a0[SSF_WAVELENGTH_B1] << 8) | 6367 page_a0[SSF_WAVELENGTH_B0]; 6368 if (wavelength == SFP_WAVELENGTH_LC1310) 6369 flag |= SFP_FLAG_PT_LWLASER_LC1310 << SFP_FLAG_PT_SHIFT; 6370 if (wavelength == SFP_WAVELENGTH_LL1550) 6371 flag |= SFP_FLAG_PT_LWLASER_LL1550 << SFP_FLAG_PT_SHIFT; 6372 } 6373 /* check if its SFP+ */ 6374 flag |= ((page_a0[SSF_IDENTIFIER] == SFF_PG0_IDENT_SFP) ? 6375 SFP_FLAG_CT_SFP_PLUS : SFP_FLAG_CT_UNKNOWN) 6376 << SFP_FLAG_CT_SHIFT; 6377 6378 /* check if its OPTICAL */ 6379 flag |= ((page_a0[SSF_CONNECTOR] == SFF_PG0_CONNECTOR_LC) ? 6380 SFP_FLAG_IS_OPTICAL_PORT : 0) 6381 << SFP_FLAG_IS_OPTICAL_SHIFT; 6382 6383 temperature = (page_a2[SFF_TEMPERATURE_B1] << 8 | 6384 page_a2[SFF_TEMPERATURE_B0]); 6385 vcc = (page_a2[SFF_VCC_B1] << 8 | 6386 page_a2[SFF_VCC_B0]); 6387 tx_power = (page_a2[SFF_TXPOWER_B1] << 8 | 6388 page_a2[SFF_TXPOWER_B0]); 6389 tx_bias = (page_a2[SFF_TX_BIAS_CURRENT_B1] << 8 | 6390 page_a2[SFF_TX_BIAS_CURRENT_B0]); 6391 rx_power = (page_a2[SFF_RXPOWER_B1] << 8 | 6392 page_a2[SFF_RXPOWER_B0]); 6393 desc->sfp_info.temperature = cpu_to_be16(temperature); 6394 desc->sfp_info.rx_power = cpu_to_be16(rx_power); 6395 desc->sfp_info.tx_bias = cpu_to_be16(tx_bias); 6396 desc->sfp_info.tx_power = cpu_to_be16(tx_power); 6397 desc->sfp_info.vcc = cpu_to_be16(vcc); 6398 6399 desc->sfp_info.flags = cpu_to_be16(flag); 6400 desc->length = cpu_to_be32(sizeof(desc->sfp_info)); 6401 6402 return sizeof(struct fc_rdp_sfp_desc); 6403 } 6404 6405 static uint32_t 6406 lpfc_rdp_res_link_error(struct fc_rdp_link_error_status_desc *desc, 6407 READ_LNK_VAR *stat) 6408 { 6409 uint32_t type; 6410 6411 desc->tag = cpu_to_be32(RDP_LINK_ERROR_STATUS_DESC_TAG); 6412 6413 type = VN_PT_PHY_PF_PORT << VN_PT_PHY_SHIFT; 6414 6415 desc->info.port_type = cpu_to_be32(type); 6416 6417 desc->info.link_status.link_failure_cnt = 6418 cpu_to_be32(stat->linkFailureCnt); 6419 desc->info.link_status.loss_of_synch_cnt = 6420 cpu_to_be32(stat->lossSyncCnt); 6421 desc->info.link_status.loss_of_signal_cnt = 6422 cpu_to_be32(stat->lossSignalCnt); 6423 desc->info.link_status.primitive_seq_proto_err = 6424 cpu_to_be32(stat->primSeqErrCnt); 6425 desc->info.link_status.invalid_trans_word = 6426 cpu_to_be32(stat->invalidXmitWord); 6427 desc->info.link_status.invalid_crc_cnt = cpu_to_be32(stat->crcCnt); 6428 6429 desc->length = cpu_to_be32(sizeof(desc->info)); 6430 6431 return sizeof(struct fc_rdp_link_error_status_desc); 6432 } 6433 6434 static uint32_t 6435 lpfc_rdp_res_bbc_desc(struct fc_rdp_bbc_desc *desc, READ_LNK_VAR *stat, 6436 struct lpfc_vport *vport) 6437 { 6438 uint32_t bbCredit; 6439 6440 desc->tag = cpu_to_be32(RDP_BBC_DESC_TAG); 6441 6442 bbCredit = vport->fc_sparam.cmn.bbCreditLsb | 6443 (vport->fc_sparam.cmn.bbCreditMsb << 8); 6444 desc->bbc_info.port_bbc = cpu_to_be32(bbCredit); 6445 if (vport->phba->fc_topology != LPFC_TOPOLOGY_LOOP) { 6446 bbCredit = vport->phba->fc_fabparam.cmn.bbCreditLsb | 6447 (vport->phba->fc_fabparam.cmn.bbCreditMsb << 8); 6448 desc->bbc_info.attached_port_bbc = cpu_to_be32(bbCredit); 6449 } else { 6450 desc->bbc_info.attached_port_bbc = 0; 6451 } 6452 6453 desc->bbc_info.rtt = 0; 6454 desc->length = cpu_to_be32(sizeof(desc->bbc_info)); 6455 6456 return sizeof(struct fc_rdp_bbc_desc); 6457 } 6458 6459 static uint32_t 6460 lpfc_rdp_res_oed_temp_desc(struct lpfc_hba *phba, 6461 struct fc_rdp_oed_sfp_desc *desc, uint8_t *page_a2) 6462 { 6463 uint32_t flags = 0; 6464 6465 desc->tag = cpu_to_be32(RDP_OED_DESC_TAG); 6466 6467 desc->oed_info.hi_alarm = page_a2[SSF_TEMP_HIGH_ALARM]; 6468 desc->oed_info.lo_alarm = page_a2[SSF_TEMP_LOW_ALARM]; 6469 desc->oed_info.hi_warning = page_a2[SSF_TEMP_HIGH_WARNING]; 6470 desc->oed_info.lo_warning = page_a2[SSF_TEMP_LOW_WARNING]; 6471 6472 if (phba->sfp_alarm & LPFC_TRANSGRESSION_HIGH_TEMPERATURE) 6473 flags |= RDP_OET_HIGH_ALARM; 6474 if (phba->sfp_alarm & LPFC_TRANSGRESSION_LOW_TEMPERATURE) 6475 flags |= RDP_OET_LOW_ALARM; 6476 if (phba->sfp_warning & LPFC_TRANSGRESSION_HIGH_TEMPERATURE) 6477 flags |= RDP_OET_HIGH_WARNING; 6478 if (phba->sfp_warning & LPFC_TRANSGRESSION_LOW_TEMPERATURE) 6479 flags |= RDP_OET_LOW_WARNING; 6480 6481 flags |= ((0xf & RDP_OED_TEMPERATURE) << RDP_OED_TYPE_SHIFT); 6482 desc->oed_info.function_flags = cpu_to_be32(flags); 6483 desc->length = cpu_to_be32(sizeof(desc->oed_info)); 6484 return sizeof(struct fc_rdp_oed_sfp_desc); 6485 } 6486 6487 static uint32_t 6488 lpfc_rdp_res_oed_voltage_desc(struct lpfc_hba *phba, 6489 struct fc_rdp_oed_sfp_desc *desc, 6490 uint8_t *page_a2) 6491 { 6492 uint32_t flags = 0; 6493 6494 desc->tag = cpu_to_be32(RDP_OED_DESC_TAG); 6495 6496 desc->oed_info.hi_alarm = page_a2[SSF_VOLTAGE_HIGH_ALARM]; 6497 desc->oed_info.lo_alarm = page_a2[SSF_VOLTAGE_LOW_ALARM]; 6498 desc->oed_info.hi_warning = page_a2[SSF_VOLTAGE_HIGH_WARNING]; 6499 desc->oed_info.lo_warning = page_a2[SSF_VOLTAGE_LOW_WARNING]; 6500 6501 if (phba->sfp_alarm & LPFC_TRANSGRESSION_HIGH_VOLTAGE) 6502 flags |= RDP_OET_HIGH_ALARM; 6503 if (phba->sfp_alarm & LPFC_TRANSGRESSION_LOW_VOLTAGE) 6504 flags |= RDP_OET_LOW_ALARM; 6505 if (phba->sfp_warning & LPFC_TRANSGRESSION_HIGH_VOLTAGE) 6506 flags |= RDP_OET_HIGH_WARNING; 6507 if (phba->sfp_warning & LPFC_TRANSGRESSION_LOW_VOLTAGE) 6508 flags |= RDP_OET_LOW_WARNING; 6509 6510 flags |= ((0xf & RDP_OED_VOLTAGE) << RDP_OED_TYPE_SHIFT); 6511 desc->oed_info.function_flags = cpu_to_be32(flags); 6512 desc->length = cpu_to_be32(sizeof(desc->oed_info)); 6513 return sizeof(struct fc_rdp_oed_sfp_desc); 6514 } 6515 6516 static uint32_t 6517 lpfc_rdp_res_oed_txbias_desc(struct lpfc_hba *phba, 6518 struct fc_rdp_oed_sfp_desc *desc, 6519 uint8_t *page_a2) 6520 { 6521 uint32_t flags = 0; 6522 6523 desc->tag = cpu_to_be32(RDP_OED_DESC_TAG); 6524 6525 desc->oed_info.hi_alarm = page_a2[SSF_BIAS_HIGH_ALARM]; 6526 desc->oed_info.lo_alarm = page_a2[SSF_BIAS_LOW_ALARM]; 6527 desc->oed_info.hi_warning = page_a2[SSF_BIAS_HIGH_WARNING]; 6528 desc->oed_info.lo_warning = page_a2[SSF_BIAS_LOW_WARNING]; 6529 6530 if (phba->sfp_alarm & LPFC_TRANSGRESSION_HIGH_TXBIAS) 6531 flags |= RDP_OET_HIGH_ALARM; 6532 if (phba->sfp_alarm & LPFC_TRANSGRESSION_LOW_TXBIAS) 6533 flags |= RDP_OET_LOW_ALARM; 6534 if (phba->sfp_warning & LPFC_TRANSGRESSION_HIGH_TXBIAS) 6535 flags |= RDP_OET_HIGH_WARNING; 6536 if (phba->sfp_warning & LPFC_TRANSGRESSION_LOW_TXBIAS) 6537 flags |= RDP_OET_LOW_WARNING; 6538 6539 flags |= ((0xf & RDP_OED_TXBIAS) << RDP_OED_TYPE_SHIFT); 6540 desc->oed_info.function_flags = cpu_to_be32(flags); 6541 desc->length = cpu_to_be32(sizeof(desc->oed_info)); 6542 return sizeof(struct fc_rdp_oed_sfp_desc); 6543 } 6544 6545 static uint32_t 6546 lpfc_rdp_res_oed_txpower_desc(struct lpfc_hba *phba, 6547 struct fc_rdp_oed_sfp_desc *desc, 6548 uint8_t *page_a2) 6549 { 6550 uint32_t flags = 0; 6551 6552 desc->tag = cpu_to_be32(RDP_OED_DESC_TAG); 6553 6554 desc->oed_info.hi_alarm = page_a2[SSF_TXPOWER_HIGH_ALARM]; 6555 desc->oed_info.lo_alarm = page_a2[SSF_TXPOWER_LOW_ALARM]; 6556 desc->oed_info.hi_warning = page_a2[SSF_TXPOWER_HIGH_WARNING]; 6557 desc->oed_info.lo_warning = page_a2[SSF_TXPOWER_LOW_WARNING]; 6558 6559 if (phba->sfp_alarm & LPFC_TRANSGRESSION_HIGH_TXPOWER) 6560 flags |= RDP_OET_HIGH_ALARM; 6561 if (phba->sfp_alarm & LPFC_TRANSGRESSION_LOW_TXPOWER) 6562 flags |= RDP_OET_LOW_ALARM; 6563 if (phba->sfp_warning & LPFC_TRANSGRESSION_HIGH_TXPOWER) 6564 flags |= RDP_OET_HIGH_WARNING; 6565 if (phba->sfp_warning & LPFC_TRANSGRESSION_LOW_TXPOWER) 6566 flags |= RDP_OET_LOW_WARNING; 6567 6568 flags |= ((0xf & RDP_OED_TXPOWER) << RDP_OED_TYPE_SHIFT); 6569 desc->oed_info.function_flags = cpu_to_be32(flags); 6570 desc->length = cpu_to_be32(sizeof(desc->oed_info)); 6571 return sizeof(struct fc_rdp_oed_sfp_desc); 6572 } 6573 6574 6575 static uint32_t 6576 lpfc_rdp_res_oed_rxpower_desc(struct lpfc_hba *phba, 6577 struct fc_rdp_oed_sfp_desc *desc, 6578 uint8_t *page_a2) 6579 { 6580 uint32_t flags = 0; 6581 6582 desc->tag = cpu_to_be32(RDP_OED_DESC_TAG); 6583 6584 desc->oed_info.hi_alarm = page_a2[SSF_RXPOWER_HIGH_ALARM]; 6585 desc->oed_info.lo_alarm = page_a2[SSF_RXPOWER_LOW_ALARM]; 6586 desc->oed_info.hi_warning = page_a2[SSF_RXPOWER_HIGH_WARNING]; 6587 desc->oed_info.lo_warning = page_a2[SSF_RXPOWER_LOW_WARNING]; 6588 6589 if (phba->sfp_alarm & LPFC_TRANSGRESSION_HIGH_RXPOWER) 6590 flags |= RDP_OET_HIGH_ALARM; 6591 if (phba->sfp_alarm & LPFC_TRANSGRESSION_LOW_RXPOWER) 6592 flags |= RDP_OET_LOW_ALARM; 6593 if (phba->sfp_warning & LPFC_TRANSGRESSION_HIGH_RXPOWER) 6594 flags |= RDP_OET_HIGH_WARNING; 6595 if (phba->sfp_warning & LPFC_TRANSGRESSION_LOW_RXPOWER) 6596 flags |= RDP_OET_LOW_WARNING; 6597 6598 flags |= ((0xf & RDP_OED_RXPOWER) << RDP_OED_TYPE_SHIFT); 6599 desc->oed_info.function_flags = cpu_to_be32(flags); 6600 desc->length = cpu_to_be32(sizeof(desc->oed_info)); 6601 return sizeof(struct fc_rdp_oed_sfp_desc); 6602 } 6603 6604 static uint32_t 6605 lpfc_rdp_res_opd_desc(struct fc_rdp_opd_sfp_desc *desc, 6606 uint8_t *page_a0, struct lpfc_vport *vport) 6607 { 6608 desc->tag = cpu_to_be32(RDP_OPD_DESC_TAG); 6609 memcpy(desc->opd_info.vendor_name, &page_a0[SSF_VENDOR_NAME], 16); 6610 memcpy(desc->opd_info.model_number, &page_a0[SSF_VENDOR_PN], 16); 6611 memcpy(desc->opd_info.serial_number, &page_a0[SSF_VENDOR_SN], 16); 6612 memcpy(desc->opd_info.revision, &page_a0[SSF_VENDOR_REV], 4); 6613 memcpy(desc->opd_info.date, &page_a0[SSF_DATE_CODE], 8); 6614 desc->length = cpu_to_be32(sizeof(desc->opd_info)); 6615 return sizeof(struct fc_rdp_opd_sfp_desc); 6616 } 6617 6618 static uint32_t 6619 lpfc_rdp_res_fec_desc(struct fc_fec_rdp_desc *desc, READ_LNK_VAR *stat) 6620 { 6621 if (bf_get(lpfc_read_link_stat_gec2, stat) == 0) 6622 return 0; 6623 desc->tag = cpu_to_be32(RDP_FEC_DESC_TAG); 6624 6625 desc->info.CorrectedBlocks = 6626 cpu_to_be32(stat->fecCorrBlkCount); 6627 desc->info.UncorrectableBlocks = 6628 cpu_to_be32(stat->fecUncorrBlkCount); 6629 6630 desc->length = cpu_to_be32(sizeof(desc->info)); 6631 6632 return sizeof(struct fc_fec_rdp_desc); 6633 } 6634 6635 static uint32_t 6636 lpfc_rdp_res_speed(struct fc_rdp_port_speed_desc *desc, struct lpfc_hba *phba) 6637 { 6638 uint16_t rdp_cap = 0; 6639 uint16_t rdp_speed; 6640 6641 desc->tag = cpu_to_be32(RDP_PORT_SPEED_DESC_TAG); 6642 6643 switch (phba->fc_linkspeed) { 6644 case LPFC_LINK_SPEED_1GHZ: 6645 rdp_speed = RDP_PS_1GB; 6646 break; 6647 case LPFC_LINK_SPEED_2GHZ: 6648 rdp_speed = RDP_PS_2GB; 6649 break; 6650 case LPFC_LINK_SPEED_4GHZ: 6651 rdp_speed = RDP_PS_4GB; 6652 break; 6653 case LPFC_LINK_SPEED_8GHZ: 6654 rdp_speed = RDP_PS_8GB; 6655 break; 6656 case LPFC_LINK_SPEED_10GHZ: 6657 rdp_speed = RDP_PS_10GB; 6658 break; 6659 case LPFC_LINK_SPEED_16GHZ: 6660 rdp_speed = RDP_PS_16GB; 6661 break; 6662 case LPFC_LINK_SPEED_32GHZ: 6663 rdp_speed = RDP_PS_32GB; 6664 break; 6665 case LPFC_LINK_SPEED_64GHZ: 6666 rdp_speed = RDP_PS_64GB; 6667 break; 6668 case LPFC_LINK_SPEED_128GHZ: 6669 rdp_speed = RDP_PS_128GB; 6670 break; 6671 case LPFC_LINK_SPEED_256GHZ: 6672 rdp_speed = RDP_PS_256GB; 6673 break; 6674 default: 6675 rdp_speed = RDP_PS_UNKNOWN; 6676 break; 6677 } 6678 6679 desc->info.port_speed.speed = cpu_to_be16(rdp_speed); 6680 6681 if (phba->lmt & LMT_256Gb) 6682 rdp_cap |= RDP_PS_256GB; 6683 if (phba->lmt & LMT_128Gb) 6684 rdp_cap |= RDP_PS_128GB; 6685 if (phba->lmt & LMT_64Gb) 6686 rdp_cap |= RDP_PS_64GB; 6687 if (phba->lmt & LMT_32Gb) 6688 rdp_cap |= RDP_PS_32GB; 6689 if (phba->lmt & LMT_16Gb) 6690 rdp_cap |= RDP_PS_16GB; 6691 if (phba->lmt & LMT_10Gb) 6692 rdp_cap |= RDP_PS_10GB; 6693 if (phba->lmt & LMT_8Gb) 6694 rdp_cap |= RDP_PS_8GB; 6695 if (phba->lmt & LMT_4Gb) 6696 rdp_cap |= RDP_PS_4GB; 6697 if (phba->lmt & LMT_2Gb) 6698 rdp_cap |= RDP_PS_2GB; 6699 if (phba->lmt & LMT_1Gb) 6700 rdp_cap |= RDP_PS_1GB; 6701 6702 if (rdp_cap == 0) 6703 rdp_cap = RDP_CAP_UNKNOWN; 6704 if (phba->cfg_link_speed != LPFC_USER_LINK_SPEED_AUTO) 6705 rdp_cap |= RDP_CAP_USER_CONFIGURED; 6706 6707 desc->info.port_speed.capabilities = cpu_to_be16(rdp_cap); 6708 desc->length = cpu_to_be32(sizeof(desc->info)); 6709 return sizeof(struct fc_rdp_port_speed_desc); 6710 } 6711 6712 static uint32_t 6713 lpfc_rdp_res_diag_port_names(struct fc_rdp_port_name_desc *desc, 6714 struct lpfc_vport *vport) 6715 { 6716 6717 desc->tag = cpu_to_be32(RDP_PORT_NAMES_DESC_TAG); 6718 6719 memcpy(desc->port_names.wwnn, &vport->fc_nodename, 6720 sizeof(desc->port_names.wwnn)); 6721 6722 memcpy(desc->port_names.wwpn, &vport->fc_portname, 6723 sizeof(desc->port_names.wwpn)); 6724 6725 desc->length = cpu_to_be32(sizeof(desc->port_names)); 6726 return sizeof(struct fc_rdp_port_name_desc); 6727 } 6728 6729 static uint32_t 6730 lpfc_rdp_res_attach_port_names(struct fc_rdp_port_name_desc *desc, 6731 struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) 6732 { 6733 6734 desc->tag = cpu_to_be32(RDP_PORT_NAMES_DESC_TAG); 6735 if (vport->fc_flag & FC_FABRIC) { 6736 memcpy(desc->port_names.wwnn, &vport->fabric_nodename, 6737 sizeof(desc->port_names.wwnn)); 6738 6739 memcpy(desc->port_names.wwpn, &vport->fabric_portname, 6740 sizeof(desc->port_names.wwpn)); 6741 } else { /* Point to Point */ 6742 memcpy(desc->port_names.wwnn, &ndlp->nlp_nodename, 6743 sizeof(desc->port_names.wwnn)); 6744 6745 memcpy(desc->port_names.wwpn, &ndlp->nlp_portname, 6746 sizeof(desc->port_names.wwpn)); 6747 } 6748 6749 desc->length = cpu_to_be32(sizeof(desc->port_names)); 6750 return sizeof(struct fc_rdp_port_name_desc); 6751 } 6752 6753 static void 6754 lpfc_els_rdp_cmpl(struct lpfc_hba *phba, struct lpfc_rdp_context *rdp_context, 6755 int status) 6756 { 6757 struct lpfc_nodelist *ndlp = rdp_context->ndlp; 6758 struct lpfc_vport *vport = ndlp->vport; 6759 struct lpfc_iocbq *elsiocb; 6760 struct ulp_bde64 *bpl; 6761 IOCB_t *icmd; 6762 uint8_t *pcmd; 6763 struct ls_rjt *stat; 6764 struct fc_rdp_res_frame *rdp_res; 6765 uint32_t cmdsize, len; 6766 uint16_t *flag_ptr; 6767 int rc; 6768 6769 if (status != SUCCESS) 6770 goto error; 6771 6772 /* This will change once we know the true size of the RDP payload */ 6773 cmdsize = sizeof(struct fc_rdp_res_frame); 6774 6775 elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, 6776 lpfc_max_els_tries, rdp_context->ndlp, 6777 rdp_context->ndlp->nlp_DID, ELS_CMD_ACC); 6778 if (!elsiocb) 6779 goto free_rdp_context; 6780 6781 icmd = &elsiocb->iocb; 6782 icmd->ulpContext = rdp_context->rx_id; 6783 icmd->unsli3.rcvsli3.ox_id = rdp_context->ox_id; 6784 6785 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, 6786 "2171 Xmit RDP response tag x%x xri x%x, " 6787 "did x%x, nlp_flag x%x, nlp_state x%x, rpi x%x", 6788 elsiocb->iotag, elsiocb->iocb.ulpContext, 6789 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state, 6790 ndlp->nlp_rpi); 6791 rdp_res = (struct fc_rdp_res_frame *) 6792 (((struct lpfc_dmabuf *) elsiocb->context2)->virt); 6793 pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt); 6794 memset(pcmd, 0, sizeof(struct fc_rdp_res_frame)); 6795 *((uint32_t *) (pcmd)) = ELS_CMD_ACC; 6796 6797 /* Update Alarm and Warning */ 6798 flag_ptr = (uint16_t *)(rdp_context->page_a2 + SSF_ALARM_FLAGS); 6799 phba->sfp_alarm |= *flag_ptr; 6800 flag_ptr = (uint16_t *)(rdp_context->page_a2 + SSF_WARNING_FLAGS); 6801 phba->sfp_warning |= *flag_ptr; 6802 6803 /* For RDP payload */ 6804 len = 8; 6805 len += lpfc_rdp_res_link_service((struct fc_rdp_link_service_desc *) 6806 (len + pcmd), ELS_CMD_RDP); 6807 6808 len += lpfc_rdp_res_sfp_desc((struct fc_rdp_sfp_desc *)(len + pcmd), 6809 rdp_context->page_a0, rdp_context->page_a2); 6810 len += lpfc_rdp_res_speed((struct fc_rdp_port_speed_desc *)(len + pcmd), 6811 phba); 6812 len += lpfc_rdp_res_link_error((struct fc_rdp_link_error_status_desc *) 6813 (len + pcmd), &rdp_context->link_stat); 6814 len += lpfc_rdp_res_diag_port_names((struct fc_rdp_port_name_desc *) 6815 (len + pcmd), vport); 6816 len += lpfc_rdp_res_attach_port_names((struct fc_rdp_port_name_desc *) 6817 (len + pcmd), vport, ndlp); 6818 len += lpfc_rdp_res_fec_desc((struct fc_fec_rdp_desc *)(len + pcmd), 6819 &rdp_context->link_stat); 6820 len += lpfc_rdp_res_bbc_desc((struct fc_rdp_bbc_desc *)(len + pcmd), 6821 &rdp_context->link_stat, vport); 6822 len += lpfc_rdp_res_oed_temp_desc(phba, 6823 (struct fc_rdp_oed_sfp_desc *)(len + pcmd), 6824 rdp_context->page_a2); 6825 len += lpfc_rdp_res_oed_voltage_desc(phba, 6826 (struct fc_rdp_oed_sfp_desc *)(len + pcmd), 6827 rdp_context->page_a2); 6828 len += lpfc_rdp_res_oed_txbias_desc(phba, 6829 (struct fc_rdp_oed_sfp_desc *)(len + pcmd), 6830 rdp_context->page_a2); 6831 len += lpfc_rdp_res_oed_txpower_desc(phba, 6832 (struct fc_rdp_oed_sfp_desc *)(len + pcmd), 6833 rdp_context->page_a2); 6834 len += lpfc_rdp_res_oed_rxpower_desc(phba, 6835 (struct fc_rdp_oed_sfp_desc *)(len + pcmd), 6836 rdp_context->page_a2); 6837 len += lpfc_rdp_res_opd_desc((struct fc_rdp_opd_sfp_desc *)(len + pcmd), 6838 rdp_context->page_a0, vport); 6839 6840 rdp_res->length = cpu_to_be32(len - 8); 6841 elsiocb->iocb_cmpl = lpfc_cmpl_els_rsp; 6842 6843 /* Now that we know the true size of the payload, update the BPL */ 6844 bpl = (struct ulp_bde64 *) 6845 (((struct lpfc_dmabuf *)(elsiocb->context3))->virt); 6846 bpl->tus.f.bdeSize = len; 6847 bpl->tus.f.bdeFlags = 0; 6848 bpl->tus.w = le32_to_cpu(bpl->tus.w); 6849 6850 phba->fc_stat.elsXmitACC++; 6851 elsiocb->context1 = lpfc_nlp_get(ndlp); 6852 if (!elsiocb->context1) { 6853 lpfc_els_free_iocb(phba, elsiocb); 6854 goto free_rdp_context; 6855 } 6856 6857 rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0); 6858 if (rc == IOCB_ERROR) { 6859 lpfc_els_free_iocb(phba, elsiocb); 6860 lpfc_nlp_put(ndlp); 6861 } 6862 6863 goto free_rdp_context; 6864 6865 error: 6866 cmdsize = 2 * sizeof(uint32_t); 6867 elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, lpfc_max_els_tries, 6868 ndlp, ndlp->nlp_DID, ELS_CMD_LS_RJT); 6869 if (!elsiocb) 6870 goto free_rdp_context; 6871 6872 icmd = &elsiocb->iocb; 6873 icmd->ulpContext = rdp_context->rx_id; 6874 icmd->unsli3.rcvsli3.ox_id = rdp_context->ox_id; 6875 pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt); 6876 6877 *((uint32_t *) (pcmd)) = ELS_CMD_LS_RJT; 6878 stat = (struct ls_rjt *)(pcmd + sizeof(uint32_t)); 6879 stat->un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC; 6880 6881 phba->fc_stat.elsXmitLSRJT++; 6882 elsiocb->iocb_cmpl = lpfc_cmpl_els_rsp; 6883 elsiocb->context1 = lpfc_nlp_get(ndlp); 6884 if (!elsiocb->context1) { 6885 lpfc_els_free_iocb(phba, elsiocb); 6886 goto free_rdp_context; 6887 } 6888 6889 rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0); 6890 if (rc == IOCB_ERROR) { 6891 lpfc_els_free_iocb(phba, elsiocb); 6892 lpfc_nlp_put(ndlp); 6893 } 6894 6895 free_rdp_context: 6896 /* This reference put is for the original unsolicited RDP. If the 6897 * iocb prep failed, there is no reference to remove. 6898 */ 6899 lpfc_nlp_put(ndlp); 6900 kfree(rdp_context); 6901 } 6902 6903 static int 6904 lpfc_get_rdp_info(struct lpfc_hba *phba, struct lpfc_rdp_context *rdp_context) 6905 { 6906 LPFC_MBOXQ_t *mbox = NULL; 6907 int rc; 6908 6909 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 6910 if (!mbox) { 6911 lpfc_printf_log(phba, KERN_WARNING, LOG_MBOX | LOG_ELS, 6912 "7105 failed to allocate mailbox memory"); 6913 return 1; 6914 } 6915 6916 if (lpfc_sli4_dump_page_a0(phba, mbox)) 6917 goto prep_mbox_fail; 6918 mbox->vport = rdp_context->ndlp->vport; 6919 mbox->mbox_cmpl = lpfc_mbx_cmpl_rdp_page_a0; 6920 mbox->ctx_ndlp = (struct lpfc_rdp_context *)rdp_context; 6921 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT); 6922 if (rc == MBX_NOT_FINISHED) 6923 goto issue_mbox_fail; 6924 6925 return 0; 6926 6927 prep_mbox_fail: 6928 issue_mbox_fail: 6929 mempool_free(mbox, phba->mbox_mem_pool); 6930 return 1; 6931 } 6932 6933 /* 6934 * lpfc_els_rcv_rdp - Process an unsolicited RDP ELS. 6935 * @vport: pointer to a host virtual N_Port data structure. 6936 * @cmdiocb: pointer to lpfc command iocb data structure. 6937 * @ndlp: pointer to a node-list data structure. 6938 * 6939 * This routine processes an unsolicited RDP(Read Diagnostic Parameters) 6940 * IOCB. First, the payload of the unsolicited RDP is checked. 6941 * Then it will (1) send MBX_DUMP_MEMORY, Embedded DMP_LMSD sub command TYPE-3 6942 * for Page A0, (2) send MBX_DUMP_MEMORY, DMP_LMSD for Page A2, 6943 * (3) send MBX_READ_LNK_STAT to get link stat, (4) Call lpfc_els_rdp_cmpl 6944 * gather all data and send RDP response. 6945 * 6946 * Return code 6947 * 0 - Sent the acc response 6948 * 1 - Sent the reject response. 6949 */ 6950 static int 6951 lpfc_els_rcv_rdp(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb, 6952 struct lpfc_nodelist *ndlp) 6953 { 6954 struct lpfc_hba *phba = vport->phba; 6955 struct lpfc_dmabuf *pcmd; 6956 uint8_t rjt_err, rjt_expl = LSEXP_NOTHING_MORE; 6957 struct fc_rdp_req_frame *rdp_req; 6958 struct lpfc_rdp_context *rdp_context; 6959 IOCB_t *cmd = NULL; 6960 struct ls_rjt stat; 6961 6962 if (phba->sli_rev < LPFC_SLI_REV4 || 6963 bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) < 6964 LPFC_SLI_INTF_IF_TYPE_2) { 6965 rjt_err = LSRJT_UNABLE_TPC; 6966 rjt_expl = LSEXP_REQ_UNSUPPORTED; 6967 goto error; 6968 } 6969 6970 if (phba->sli_rev < LPFC_SLI_REV4 || (phba->hba_flag & HBA_FCOE_MODE)) { 6971 rjt_err = LSRJT_UNABLE_TPC; 6972 rjt_expl = LSEXP_REQ_UNSUPPORTED; 6973 goto error; 6974 } 6975 6976 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2; 6977 rdp_req = (struct fc_rdp_req_frame *) pcmd->virt; 6978 6979 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, 6980 "2422 ELS RDP Request " 6981 "dec len %d tag x%x port_id %d len %d\n", 6982 be32_to_cpu(rdp_req->rdp_des_length), 6983 be32_to_cpu(rdp_req->nport_id_desc.tag), 6984 be32_to_cpu(rdp_req->nport_id_desc.nport_id), 6985 be32_to_cpu(rdp_req->nport_id_desc.length)); 6986 6987 if (sizeof(struct fc_rdp_nport_desc) != 6988 be32_to_cpu(rdp_req->rdp_des_length)) 6989 goto rjt_logerr; 6990 if (RDP_N_PORT_DESC_TAG != be32_to_cpu(rdp_req->nport_id_desc.tag)) 6991 goto rjt_logerr; 6992 if (RDP_NPORT_ID_SIZE != 6993 be32_to_cpu(rdp_req->nport_id_desc.length)) 6994 goto rjt_logerr; 6995 rdp_context = kzalloc(sizeof(struct lpfc_rdp_context), GFP_KERNEL); 6996 if (!rdp_context) { 6997 rjt_err = LSRJT_UNABLE_TPC; 6998 goto error; 6999 } 7000 7001 cmd = &cmdiocb->iocb; 7002 rdp_context->ndlp = lpfc_nlp_get(ndlp); 7003 if (!rdp_context->ndlp) { 7004 kfree(rdp_context); 7005 rjt_err = LSRJT_UNABLE_TPC; 7006 goto error; 7007 } 7008 rdp_context->ox_id = cmd->unsli3.rcvsli3.ox_id; 7009 rdp_context->rx_id = cmd->ulpContext; 7010 rdp_context->cmpl = lpfc_els_rdp_cmpl; 7011 if (lpfc_get_rdp_info(phba, rdp_context)) { 7012 lpfc_printf_vlog(ndlp->vport, KERN_WARNING, LOG_ELS, 7013 "2423 Unable to send mailbox"); 7014 kfree(rdp_context); 7015 rjt_err = LSRJT_UNABLE_TPC; 7016 lpfc_nlp_put(ndlp); 7017 goto error; 7018 } 7019 7020 return 0; 7021 7022 rjt_logerr: 7023 rjt_err = LSRJT_LOGICAL_ERR; 7024 7025 error: 7026 memset(&stat, 0, sizeof(stat)); 7027 stat.un.b.lsRjtRsnCode = rjt_err; 7028 stat.un.b.lsRjtRsnCodeExp = rjt_expl; 7029 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL); 7030 return 1; 7031 } 7032 7033 7034 static void 7035 lpfc_els_lcb_rsp(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 7036 { 7037 MAILBOX_t *mb; 7038 IOCB_t *icmd; 7039 uint8_t *pcmd; 7040 struct lpfc_iocbq *elsiocb; 7041 struct lpfc_nodelist *ndlp; 7042 struct ls_rjt *stat; 7043 union lpfc_sli4_cfg_shdr *shdr; 7044 struct lpfc_lcb_context *lcb_context; 7045 struct fc_lcb_res_frame *lcb_res; 7046 uint32_t cmdsize, shdr_status, shdr_add_status; 7047 int rc; 7048 7049 mb = &pmb->u.mb; 7050 lcb_context = (struct lpfc_lcb_context *)pmb->ctx_ndlp; 7051 ndlp = lcb_context->ndlp; 7052 pmb->ctx_ndlp = NULL; 7053 pmb->ctx_buf = NULL; 7054 7055 shdr = (union lpfc_sli4_cfg_shdr *) 7056 &pmb->u.mqe.un.beacon_config.header.cfg_shdr; 7057 shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response); 7058 shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response); 7059 7060 lpfc_printf_log(phba, KERN_INFO, LOG_MBOX, 7061 "0194 SET_BEACON_CONFIG mailbox " 7062 "completed with status x%x add_status x%x," 7063 " mbx status x%x\n", 7064 shdr_status, shdr_add_status, mb->mbxStatus); 7065 7066 if ((mb->mbxStatus != MBX_SUCCESS) || shdr_status || 7067 (shdr_add_status == ADD_STATUS_OPERATION_ALREADY_ACTIVE) || 7068 (shdr_add_status == ADD_STATUS_INVALID_REQUEST)) { 7069 mempool_free(pmb, phba->mbox_mem_pool); 7070 goto error; 7071 } 7072 7073 mempool_free(pmb, phba->mbox_mem_pool); 7074 cmdsize = sizeof(struct fc_lcb_res_frame); 7075 elsiocb = lpfc_prep_els_iocb(phba->pport, 0, cmdsize, 7076 lpfc_max_els_tries, ndlp, 7077 ndlp->nlp_DID, ELS_CMD_ACC); 7078 7079 /* Decrement the ndlp reference count from previous mbox command */ 7080 lpfc_nlp_put(ndlp); 7081 7082 if (!elsiocb) 7083 goto free_lcb_context; 7084 7085 lcb_res = (struct fc_lcb_res_frame *) 7086 (((struct lpfc_dmabuf *)elsiocb->context2)->virt); 7087 7088 memset(lcb_res, 0, sizeof(struct fc_lcb_res_frame)); 7089 icmd = &elsiocb->iocb; 7090 icmd->ulpContext = lcb_context->rx_id; 7091 icmd->unsli3.rcvsli3.ox_id = lcb_context->ox_id; 7092 7093 pcmd = (uint8_t *)(((struct lpfc_dmabuf *)elsiocb->context2)->virt); 7094 *((uint32_t *)(pcmd)) = ELS_CMD_ACC; 7095 lcb_res->lcb_sub_command = lcb_context->sub_command; 7096 lcb_res->lcb_type = lcb_context->type; 7097 lcb_res->capability = lcb_context->capability; 7098 lcb_res->lcb_frequency = lcb_context->frequency; 7099 lcb_res->lcb_duration = lcb_context->duration; 7100 elsiocb->iocb_cmpl = lpfc_cmpl_els_rsp; 7101 phba->fc_stat.elsXmitACC++; 7102 7103 elsiocb->context1 = lpfc_nlp_get(ndlp); 7104 if (!elsiocb->context1) { 7105 lpfc_els_free_iocb(phba, elsiocb); 7106 goto out; 7107 } 7108 7109 rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0); 7110 if (rc == IOCB_ERROR) { 7111 lpfc_els_free_iocb(phba, elsiocb); 7112 lpfc_nlp_put(ndlp); 7113 } 7114 out: 7115 kfree(lcb_context); 7116 return; 7117 7118 error: 7119 cmdsize = sizeof(struct fc_lcb_res_frame); 7120 elsiocb = lpfc_prep_els_iocb(phba->pport, 0, cmdsize, 7121 lpfc_max_els_tries, ndlp, 7122 ndlp->nlp_DID, ELS_CMD_LS_RJT); 7123 lpfc_nlp_put(ndlp); 7124 if (!elsiocb) 7125 goto free_lcb_context; 7126 7127 icmd = &elsiocb->iocb; 7128 icmd->ulpContext = lcb_context->rx_id; 7129 icmd->unsli3.rcvsli3.ox_id = lcb_context->ox_id; 7130 pcmd = (uint8_t *)(((struct lpfc_dmabuf *)elsiocb->context2)->virt); 7131 7132 *((uint32_t *)(pcmd)) = ELS_CMD_LS_RJT; 7133 stat = (struct ls_rjt *)(pcmd + sizeof(uint32_t)); 7134 stat->un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC; 7135 7136 if (shdr_add_status == ADD_STATUS_OPERATION_ALREADY_ACTIVE) 7137 stat->un.b.lsRjtRsnCodeExp = LSEXP_CMD_IN_PROGRESS; 7138 7139 elsiocb->iocb_cmpl = lpfc_cmpl_els_rsp; 7140 phba->fc_stat.elsXmitLSRJT++; 7141 elsiocb->context1 = lpfc_nlp_get(ndlp); 7142 if (!elsiocb->context1) { 7143 lpfc_els_free_iocb(phba, elsiocb); 7144 goto free_lcb_context; 7145 } 7146 7147 rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0); 7148 if (rc == IOCB_ERROR) { 7149 lpfc_els_free_iocb(phba, elsiocb); 7150 lpfc_nlp_put(ndlp); 7151 } 7152 free_lcb_context: 7153 kfree(lcb_context); 7154 } 7155 7156 static int 7157 lpfc_sli4_set_beacon(struct lpfc_vport *vport, 7158 struct lpfc_lcb_context *lcb_context, 7159 uint32_t beacon_state) 7160 { 7161 struct lpfc_hba *phba = vport->phba; 7162 union lpfc_sli4_cfg_shdr *cfg_shdr; 7163 LPFC_MBOXQ_t *mbox = NULL; 7164 uint32_t len; 7165 int rc; 7166 7167 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 7168 if (!mbox) 7169 return 1; 7170 7171 cfg_shdr = &mbox->u.mqe.un.sli4_config.header.cfg_shdr; 7172 len = sizeof(struct lpfc_mbx_set_beacon_config) - 7173 sizeof(struct lpfc_sli4_cfg_mhdr); 7174 lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_COMMON, 7175 LPFC_MBOX_OPCODE_SET_BEACON_CONFIG, len, 7176 LPFC_SLI4_MBX_EMBED); 7177 mbox->ctx_ndlp = (void *)lcb_context; 7178 mbox->vport = phba->pport; 7179 mbox->mbox_cmpl = lpfc_els_lcb_rsp; 7180 bf_set(lpfc_mbx_set_beacon_port_num, &mbox->u.mqe.un.beacon_config, 7181 phba->sli4_hba.physical_port); 7182 bf_set(lpfc_mbx_set_beacon_state, &mbox->u.mqe.un.beacon_config, 7183 beacon_state); 7184 mbox->u.mqe.un.beacon_config.word5 = 0; /* Reserved */ 7185 7186 /* 7187 * Check bv1s bit before issuing the mailbox 7188 * if bv1s == 1, LCB V1 supported 7189 * else, LCB V0 supported 7190 */ 7191 7192 if (phba->sli4_hba.pc_sli4_params.bv1s) { 7193 /* COMMON_SET_BEACON_CONFIG_V1 */ 7194 cfg_shdr->request.word9 = BEACON_VERSION_V1; 7195 lcb_context->capability |= LCB_CAPABILITY_DURATION; 7196 bf_set(lpfc_mbx_set_beacon_port_type, 7197 &mbox->u.mqe.un.beacon_config, 0); 7198 bf_set(lpfc_mbx_set_beacon_duration_v1, 7199 &mbox->u.mqe.un.beacon_config, 7200 be16_to_cpu(lcb_context->duration)); 7201 } else { 7202 /* COMMON_SET_BEACON_CONFIG_V0 */ 7203 if (be16_to_cpu(lcb_context->duration) != 0) { 7204 mempool_free(mbox, phba->mbox_mem_pool); 7205 return 1; 7206 } 7207 cfg_shdr->request.word9 = BEACON_VERSION_V0; 7208 lcb_context->capability &= ~(LCB_CAPABILITY_DURATION); 7209 bf_set(lpfc_mbx_set_beacon_state, 7210 &mbox->u.mqe.un.beacon_config, beacon_state); 7211 bf_set(lpfc_mbx_set_beacon_port_type, 7212 &mbox->u.mqe.un.beacon_config, 1); 7213 bf_set(lpfc_mbx_set_beacon_duration, 7214 &mbox->u.mqe.un.beacon_config, 7215 be16_to_cpu(lcb_context->duration)); 7216 } 7217 7218 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT); 7219 if (rc == MBX_NOT_FINISHED) { 7220 mempool_free(mbox, phba->mbox_mem_pool); 7221 return 1; 7222 } 7223 7224 return 0; 7225 } 7226 7227 7228 /** 7229 * lpfc_els_rcv_lcb - Process an unsolicited LCB 7230 * @vport: pointer to a host virtual N_Port data structure. 7231 * @cmdiocb: pointer to lpfc command iocb data structure. 7232 * @ndlp: pointer to a node-list data structure. 7233 * 7234 * This routine processes an unsolicited LCB(LINK CABLE BEACON) IOCB. 7235 * First, the payload of the unsolicited LCB is checked. 7236 * Then based on Subcommand beacon will either turn on or off. 7237 * 7238 * Return code 7239 * 0 - Sent the acc response 7240 * 1 - Sent the reject response. 7241 **/ 7242 static int 7243 lpfc_els_rcv_lcb(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb, 7244 struct lpfc_nodelist *ndlp) 7245 { 7246 struct lpfc_hba *phba = vport->phba; 7247 struct lpfc_dmabuf *pcmd; 7248 uint8_t *lp; 7249 struct fc_lcb_request_frame *beacon; 7250 struct lpfc_lcb_context *lcb_context; 7251 u8 state, rjt_err = 0; 7252 struct ls_rjt stat; 7253 7254 pcmd = (struct lpfc_dmabuf *)cmdiocb->context2; 7255 lp = (uint8_t *)pcmd->virt; 7256 beacon = (struct fc_lcb_request_frame *)pcmd->virt; 7257 7258 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, 7259 "0192 ELS LCB Data x%x x%x x%x x%x sub x%x " 7260 "type x%x frequency %x duration x%x\n", 7261 lp[0], lp[1], lp[2], 7262 beacon->lcb_command, 7263 beacon->lcb_sub_command, 7264 beacon->lcb_type, 7265 beacon->lcb_frequency, 7266 be16_to_cpu(beacon->lcb_duration)); 7267 7268 if (beacon->lcb_sub_command != LPFC_LCB_ON && 7269 beacon->lcb_sub_command != LPFC_LCB_OFF) { 7270 rjt_err = LSRJT_CMD_UNSUPPORTED; 7271 goto rjt; 7272 } 7273 7274 if (phba->sli_rev < LPFC_SLI_REV4 || 7275 phba->hba_flag & HBA_FCOE_MODE || 7276 (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) < 7277 LPFC_SLI_INTF_IF_TYPE_2)) { 7278 rjt_err = LSRJT_CMD_UNSUPPORTED; 7279 goto rjt; 7280 } 7281 7282 lcb_context = kmalloc(sizeof(*lcb_context), GFP_KERNEL); 7283 if (!lcb_context) { 7284 rjt_err = LSRJT_UNABLE_TPC; 7285 goto rjt; 7286 } 7287 7288 state = (beacon->lcb_sub_command == LPFC_LCB_ON) ? 1 : 0; 7289 lcb_context->sub_command = beacon->lcb_sub_command; 7290 lcb_context->capability = 0; 7291 lcb_context->type = beacon->lcb_type; 7292 lcb_context->frequency = beacon->lcb_frequency; 7293 lcb_context->duration = beacon->lcb_duration; 7294 lcb_context->ox_id = cmdiocb->iocb.unsli3.rcvsli3.ox_id; 7295 lcb_context->rx_id = cmdiocb->iocb.ulpContext; 7296 lcb_context->ndlp = lpfc_nlp_get(ndlp); 7297 if (!lcb_context->ndlp) { 7298 rjt_err = LSRJT_UNABLE_TPC; 7299 goto rjt_free; 7300 } 7301 7302 if (lpfc_sli4_set_beacon(vport, lcb_context, state)) { 7303 lpfc_printf_vlog(ndlp->vport, KERN_ERR, LOG_TRACE_EVENT, 7304 "0193 failed to send mail box"); 7305 lpfc_nlp_put(ndlp); 7306 rjt_err = LSRJT_UNABLE_TPC; 7307 goto rjt_free; 7308 } 7309 return 0; 7310 7311 rjt_free: 7312 kfree(lcb_context); 7313 rjt: 7314 memset(&stat, 0, sizeof(stat)); 7315 stat.un.b.lsRjtRsnCode = rjt_err; 7316 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL); 7317 return 1; 7318 } 7319 7320 7321 /** 7322 * lpfc_els_flush_rscn - Clean up any rscn activities with a vport 7323 * @vport: pointer to a host virtual N_Port data structure. 7324 * 7325 * This routine cleans up any Registration State Change Notification 7326 * (RSCN) activity with a @vport. Note that the fc_rscn_flush flag of the 7327 * @vport together with the host_lock is used to prevent multiple thread 7328 * trying to access the RSCN array on a same @vport at the same time. 7329 **/ 7330 void 7331 lpfc_els_flush_rscn(struct lpfc_vport *vport) 7332 { 7333 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 7334 struct lpfc_hba *phba = vport->phba; 7335 int i; 7336 7337 spin_lock_irq(shost->host_lock); 7338 if (vport->fc_rscn_flush) { 7339 /* Another thread is walking fc_rscn_id_list on this vport */ 7340 spin_unlock_irq(shost->host_lock); 7341 return; 7342 } 7343 /* Indicate we are walking lpfc_els_flush_rscn on this vport */ 7344 vport->fc_rscn_flush = 1; 7345 spin_unlock_irq(shost->host_lock); 7346 7347 for (i = 0; i < vport->fc_rscn_id_cnt; i++) { 7348 lpfc_in_buf_free(phba, vport->fc_rscn_id_list[i]); 7349 vport->fc_rscn_id_list[i] = NULL; 7350 } 7351 spin_lock_irq(shost->host_lock); 7352 vport->fc_rscn_id_cnt = 0; 7353 vport->fc_flag &= ~(FC_RSCN_MODE | FC_RSCN_DISCOVERY); 7354 spin_unlock_irq(shost->host_lock); 7355 lpfc_can_disctmo(vport); 7356 /* Indicate we are done walking this fc_rscn_id_list */ 7357 vport->fc_rscn_flush = 0; 7358 } 7359 7360 /** 7361 * lpfc_rscn_payload_check - Check whether there is a pending rscn to a did 7362 * @vport: pointer to a host virtual N_Port data structure. 7363 * @did: remote destination port identifier. 7364 * 7365 * This routine checks whether there is any pending Registration State 7366 * Configuration Notification (RSCN) to a @did on @vport. 7367 * 7368 * Return code 7369 * None zero - The @did matched with a pending rscn 7370 * 0 - not able to match @did with a pending rscn 7371 **/ 7372 int 7373 lpfc_rscn_payload_check(struct lpfc_vport *vport, uint32_t did) 7374 { 7375 D_ID ns_did; 7376 D_ID rscn_did; 7377 uint32_t *lp; 7378 uint32_t payload_len, i; 7379 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 7380 7381 ns_did.un.word = did; 7382 7383 /* Never match fabric nodes for RSCNs */ 7384 if ((did & Fabric_DID_MASK) == Fabric_DID_MASK) 7385 return 0; 7386 7387 /* If we are doing a FULL RSCN rediscovery, match everything */ 7388 if (vport->fc_flag & FC_RSCN_DISCOVERY) 7389 return did; 7390 7391 spin_lock_irq(shost->host_lock); 7392 if (vport->fc_rscn_flush) { 7393 /* Another thread is walking fc_rscn_id_list on this vport */ 7394 spin_unlock_irq(shost->host_lock); 7395 return 0; 7396 } 7397 /* Indicate we are walking fc_rscn_id_list on this vport */ 7398 vport->fc_rscn_flush = 1; 7399 spin_unlock_irq(shost->host_lock); 7400 for (i = 0; i < vport->fc_rscn_id_cnt; i++) { 7401 lp = vport->fc_rscn_id_list[i]->virt; 7402 payload_len = be32_to_cpu(*lp++ & ~ELS_CMD_MASK); 7403 payload_len -= sizeof(uint32_t); /* take off word 0 */ 7404 while (payload_len) { 7405 rscn_did.un.word = be32_to_cpu(*lp++); 7406 payload_len -= sizeof(uint32_t); 7407 switch (rscn_did.un.b.resv & RSCN_ADDRESS_FORMAT_MASK) { 7408 case RSCN_ADDRESS_FORMAT_PORT: 7409 if ((ns_did.un.b.domain == rscn_did.un.b.domain) 7410 && (ns_did.un.b.area == rscn_did.un.b.area) 7411 && (ns_did.un.b.id == rscn_did.un.b.id)) 7412 goto return_did_out; 7413 break; 7414 case RSCN_ADDRESS_FORMAT_AREA: 7415 if ((ns_did.un.b.domain == rscn_did.un.b.domain) 7416 && (ns_did.un.b.area == rscn_did.un.b.area)) 7417 goto return_did_out; 7418 break; 7419 case RSCN_ADDRESS_FORMAT_DOMAIN: 7420 if (ns_did.un.b.domain == rscn_did.un.b.domain) 7421 goto return_did_out; 7422 break; 7423 case RSCN_ADDRESS_FORMAT_FABRIC: 7424 goto return_did_out; 7425 } 7426 } 7427 } 7428 /* Indicate we are done with walking fc_rscn_id_list on this vport */ 7429 vport->fc_rscn_flush = 0; 7430 return 0; 7431 return_did_out: 7432 /* Indicate we are done with walking fc_rscn_id_list on this vport */ 7433 vport->fc_rscn_flush = 0; 7434 return did; 7435 } 7436 7437 /** 7438 * lpfc_rscn_recovery_check - Send recovery event to vport nodes matching rscn 7439 * @vport: pointer to a host virtual N_Port data structure. 7440 * 7441 * This routine sends recovery (NLP_EVT_DEVICE_RECOVERY) event to the 7442 * state machine for a @vport's nodes that are with pending RSCN (Registration 7443 * State Change Notification). 7444 * 7445 * Return code 7446 * 0 - Successful (currently alway return 0) 7447 **/ 7448 static int 7449 lpfc_rscn_recovery_check(struct lpfc_vport *vport) 7450 { 7451 struct lpfc_nodelist *ndlp = NULL; 7452 7453 /* Move all affected nodes by pending RSCNs to NPR state. */ 7454 list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) { 7455 if ((ndlp->nlp_state == NLP_STE_UNUSED_NODE) || 7456 !lpfc_rscn_payload_check(vport, ndlp->nlp_DID)) 7457 continue; 7458 7459 /* NVME Target mode does not do RSCN Recovery. */ 7460 if (vport->phba->nvmet_support) 7461 continue; 7462 7463 /* If we are in the process of doing discovery on this 7464 * NPort, let it continue on its own. 7465 */ 7466 switch (ndlp->nlp_state) { 7467 case NLP_STE_PLOGI_ISSUE: 7468 case NLP_STE_ADISC_ISSUE: 7469 case NLP_STE_REG_LOGIN_ISSUE: 7470 case NLP_STE_PRLI_ISSUE: 7471 case NLP_STE_LOGO_ISSUE: 7472 continue; 7473 } 7474 7475 lpfc_disc_state_machine(vport, ndlp, NULL, 7476 NLP_EVT_DEVICE_RECOVERY); 7477 lpfc_cancel_retry_delay_tmo(vport, ndlp); 7478 } 7479 return 0; 7480 } 7481 7482 /** 7483 * lpfc_send_rscn_event - Send an RSCN event to management application 7484 * @vport: pointer to a host virtual N_Port data structure. 7485 * @cmdiocb: pointer to lpfc command iocb data structure. 7486 * 7487 * lpfc_send_rscn_event sends an RSCN netlink event to management 7488 * applications. 7489 */ 7490 static void 7491 lpfc_send_rscn_event(struct lpfc_vport *vport, 7492 struct lpfc_iocbq *cmdiocb) 7493 { 7494 struct lpfc_dmabuf *pcmd; 7495 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 7496 uint32_t *payload_ptr; 7497 uint32_t payload_len; 7498 struct lpfc_rscn_event_header *rscn_event_data; 7499 7500 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2; 7501 payload_ptr = (uint32_t *) pcmd->virt; 7502 payload_len = be32_to_cpu(*payload_ptr & ~ELS_CMD_MASK); 7503 7504 rscn_event_data = kmalloc(sizeof(struct lpfc_rscn_event_header) + 7505 payload_len, GFP_KERNEL); 7506 if (!rscn_event_data) { 7507 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 7508 "0147 Failed to allocate memory for RSCN event\n"); 7509 return; 7510 } 7511 rscn_event_data->event_type = FC_REG_RSCN_EVENT; 7512 rscn_event_data->payload_length = payload_len; 7513 memcpy(rscn_event_data->rscn_payload, payload_ptr, 7514 payload_len); 7515 7516 fc_host_post_vendor_event(shost, 7517 fc_get_event_number(), 7518 sizeof(struct lpfc_rscn_event_header) + payload_len, 7519 (char *)rscn_event_data, 7520 LPFC_NL_VENDOR_ID); 7521 7522 kfree(rscn_event_data); 7523 } 7524 7525 /** 7526 * lpfc_els_rcv_rscn - Process an unsolicited rscn iocb 7527 * @vport: pointer to a host virtual N_Port data structure. 7528 * @cmdiocb: pointer to lpfc command iocb data structure. 7529 * @ndlp: pointer to a node-list data structure. 7530 * 7531 * This routine processes an unsolicited RSCN (Registration State Change 7532 * Notification) IOCB. First, the payload of the unsolicited RSCN is walked 7533 * to invoke fc_host_post_event() routine to the FC transport layer. If the 7534 * discover state machine is about to begin discovery, it just accepts the 7535 * RSCN and the discovery process will satisfy the RSCN. If this RSCN only 7536 * contains N_Port IDs for other vports on this HBA, it just accepts the 7537 * RSCN and ignore processing it. If the state machine is in the recovery 7538 * state, the fc_rscn_id_list of this @vport is walked and the 7539 * lpfc_rscn_recovery_check() routine is invoked to send recovery event for 7540 * all nodes that match RSCN payload. Otherwise, the lpfc_els_handle_rscn() 7541 * routine is invoked to handle the RSCN event. 7542 * 7543 * Return code 7544 * 0 - Just sent the acc response 7545 * 1 - Sent the acc response and waited for name server completion 7546 **/ 7547 static int 7548 lpfc_els_rcv_rscn(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb, 7549 struct lpfc_nodelist *ndlp) 7550 { 7551 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 7552 struct lpfc_hba *phba = vport->phba; 7553 struct lpfc_dmabuf *pcmd; 7554 uint32_t *lp, *datap; 7555 uint32_t payload_len, length, nportid, *cmd; 7556 int rscn_cnt; 7557 int rscn_id = 0, hba_id = 0; 7558 int i, tmo; 7559 7560 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2; 7561 lp = (uint32_t *) pcmd->virt; 7562 7563 payload_len = be32_to_cpu(*lp++ & ~ELS_CMD_MASK); 7564 payload_len -= sizeof(uint32_t); /* take off word 0 */ 7565 /* RSCN received */ 7566 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, 7567 "0214 RSCN received Data: x%x x%x x%x x%x\n", 7568 vport->fc_flag, payload_len, *lp, 7569 vport->fc_rscn_id_cnt); 7570 7571 /* Send an RSCN event to the management application */ 7572 lpfc_send_rscn_event(vport, cmdiocb); 7573 7574 for (i = 0; i < payload_len/sizeof(uint32_t); i++) 7575 fc_host_post_event(shost, fc_get_event_number(), 7576 FCH_EVT_RSCN, lp[i]); 7577 7578 /* Check if RSCN is coming from a direct-connected remote NPort */ 7579 if (vport->fc_flag & FC_PT2PT) { 7580 /* If so, just ACC it, no other action needed for now */ 7581 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, 7582 "2024 pt2pt RSCN %08x Data: x%x x%x\n", 7583 *lp, vport->fc_flag, payload_len); 7584 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL); 7585 7586 /* Check to see if we need to NVME rescan this target 7587 * remoteport. 7588 */ 7589 if (ndlp->nlp_fc4_type & NLP_FC4_NVME && 7590 ndlp->nlp_type & (NLP_NVME_TARGET | NLP_NVME_DISCOVERY)) 7591 lpfc_nvme_rescan_port(vport, ndlp); 7592 return 0; 7593 } 7594 7595 /* If we are about to begin discovery, just ACC the RSCN. 7596 * Discovery processing will satisfy it. 7597 */ 7598 if (vport->port_state <= LPFC_NS_QRY) { 7599 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL, 7600 "RCV RSCN ignore: did:x%x/ste:x%x flg:x%x", 7601 ndlp->nlp_DID, vport->port_state, ndlp->nlp_flag); 7602 7603 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL); 7604 return 0; 7605 } 7606 7607 /* If this RSCN just contains NPortIDs for other vports on this HBA, 7608 * just ACC and ignore it. 7609 */ 7610 if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) && 7611 !(vport->cfg_peer_port_login)) { 7612 i = payload_len; 7613 datap = lp; 7614 while (i > 0) { 7615 nportid = *datap++; 7616 nportid = ((be32_to_cpu(nportid)) & Mask_DID); 7617 i -= sizeof(uint32_t); 7618 rscn_id++; 7619 if (lpfc_find_vport_by_did(phba, nportid)) 7620 hba_id++; 7621 } 7622 if (rscn_id == hba_id) { 7623 /* ALL NPortIDs in RSCN are on HBA */ 7624 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, 7625 "0219 Ignore RSCN " 7626 "Data: x%x x%x x%x x%x\n", 7627 vport->fc_flag, payload_len, 7628 *lp, vport->fc_rscn_id_cnt); 7629 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL, 7630 "RCV RSCN vport: did:x%x/ste:x%x flg:x%x", 7631 ndlp->nlp_DID, vport->port_state, 7632 ndlp->nlp_flag); 7633 7634 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, 7635 ndlp, NULL); 7636 return 0; 7637 } 7638 } 7639 7640 spin_lock_irq(shost->host_lock); 7641 if (vport->fc_rscn_flush) { 7642 /* Another thread is walking fc_rscn_id_list on this vport */ 7643 vport->fc_flag |= FC_RSCN_DISCOVERY; 7644 spin_unlock_irq(shost->host_lock); 7645 /* Send back ACC */ 7646 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL); 7647 return 0; 7648 } 7649 /* Indicate we are walking fc_rscn_id_list on this vport */ 7650 vport->fc_rscn_flush = 1; 7651 spin_unlock_irq(shost->host_lock); 7652 /* Get the array count after successfully have the token */ 7653 rscn_cnt = vport->fc_rscn_id_cnt; 7654 /* If we are already processing an RSCN, save the received 7655 * RSCN payload buffer, cmdiocb->context2 to process later. 7656 */ 7657 if (vport->fc_flag & (FC_RSCN_MODE | FC_NDISC_ACTIVE)) { 7658 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL, 7659 "RCV RSCN defer: did:x%x/ste:x%x flg:x%x", 7660 ndlp->nlp_DID, vport->port_state, ndlp->nlp_flag); 7661 7662 spin_lock_irq(shost->host_lock); 7663 vport->fc_flag |= FC_RSCN_DEFERRED; 7664 7665 /* Restart disctmo if its already running */ 7666 if (vport->fc_flag & FC_DISC_TMO) { 7667 tmo = ((phba->fc_ratov * 3) + 3); 7668 mod_timer(&vport->fc_disctmo, 7669 jiffies + msecs_to_jiffies(1000 * tmo)); 7670 } 7671 if ((rscn_cnt < FC_MAX_HOLD_RSCN) && 7672 !(vport->fc_flag & FC_RSCN_DISCOVERY)) { 7673 vport->fc_flag |= FC_RSCN_MODE; 7674 spin_unlock_irq(shost->host_lock); 7675 if (rscn_cnt) { 7676 cmd = vport->fc_rscn_id_list[rscn_cnt-1]->virt; 7677 length = be32_to_cpu(*cmd & ~ELS_CMD_MASK); 7678 } 7679 if ((rscn_cnt) && 7680 (payload_len + length <= LPFC_BPL_SIZE)) { 7681 *cmd &= ELS_CMD_MASK; 7682 *cmd |= cpu_to_be32(payload_len + length); 7683 memcpy(((uint8_t *)cmd) + length, lp, 7684 payload_len); 7685 } else { 7686 vport->fc_rscn_id_list[rscn_cnt] = pcmd; 7687 vport->fc_rscn_id_cnt++; 7688 /* If we zero, cmdiocb->context2, the calling 7689 * routine will not try to free it. 7690 */ 7691 cmdiocb->context2 = NULL; 7692 } 7693 /* Deferred RSCN */ 7694 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, 7695 "0235 Deferred RSCN " 7696 "Data: x%x x%x x%x\n", 7697 vport->fc_rscn_id_cnt, vport->fc_flag, 7698 vport->port_state); 7699 } else { 7700 vport->fc_flag |= FC_RSCN_DISCOVERY; 7701 spin_unlock_irq(shost->host_lock); 7702 /* ReDiscovery RSCN */ 7703 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, 7704 "0234 ReDiscovery RSCN " 7705 "Data: x%x x%x x%x\n", 7706 vport->fc_rscn_id_cnt, vport->fc_flag, 7707 vport->port_state); 7708 } 7709 /* Indicate we are done walking fc_rscn_id_list on this vport */ 7710 vport->fc_rscn_flush = 0; 7711 /* Send back ACC */ 7712 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL); 7713 /* send RECOVERY event for ALL nodes that match RSCN payload */ 7714 lpfc_rscn_recovery_check(vport); 7715 return 0; 7716 } 7717 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL, 7718 "RCV RSCN: did:x%x/ste:x%x flg:x%x", 7719 ndlp->nlp_DID, vport->port_state, ndlp->nlp_flag); 7720 7721 spin_lock_irq(shost->host_lock); 7722 vport->fc_flag |= FC_RSCN_MODE; 7723 spin_unlock_irq(shost->host_lock); 7724 vport->fc_rscn_id_list[vport->fc_rscn_id_cnt++] = pcmd; 7725 /* Indicate we are done walking fc_rscn_id_list on this vport */ 7726 vport->fc_rscn_flush = 0; 7727 /* 7728 * If we zero, cmdiocb->context2, the calling routine will 7729 * not try to free it. 7730 */ 7731 cmdiocb->context2 = NULL; 7732 lpfc_set_disctmo(vport); 7733 /* Send back ACC */ 7734 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL); 7735 /* send RECOVERY event for ALL nodes that match RSCN payload */ 7736 lpfc_rscn_recovery_check(vport); 7737 return lpfc_els_handle_rscn(vport); 7738 } 7739 7740 /** 7741 * lpfc_els_handle_rscn - Handle rscn for a vport 7742 * @vport: pointer to a host virtual N_Port data structure. 7743 * 7744 * This routine handles the Registration State Configuration Notification 7745 * (RSCN) for a @vport. If login to NameServer does not exist, a new ndlp shall 7746 * be created and a Port Login (PLOGI) to the NameServer is issued. Otherwise, 7747 * if the ndlp to NameServer exists, a Common Transport (CT) command to the 7748 * NameServer shall be issued. If CT command to the NameServer fails to be 7749 * issued, the lpfc_els_flush_rscn() routine shall be invoked to clean up any 7750 * RSCN activities with the @vport. 7751 * 7752 * Return code 7753 * 0 - Cleaned up rscn on the @vport 7754 * 1 - Wait for plogi to name server before proceed 7755 **/ 7756 int 7757 lpfc_els_handle_rscn(struct lpfc_vport *vport) 7758 { 7759 struct lpfc_nodelist *ndlp; 7760 struct lpfc_hba *phba = vport->phba; 7761 7762 /* Ignore RSCN if the port is being torn down. */ 7763 if (vport->load_flag & FC_UNLOADING) { 7764 lpfc_els_flush_rscn(vport); 7765 return 0; 7766 } 7767 7768 /* Start timer for RSCN processing */ 7769 lpfc_set_disctmo(vport); 7770 7771 /* RSCN processed */ 7772 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, 7773 "0215 RSCN processed Data: x%x x%x x%x x%x x%x x%x\n", 7774 vport->fc_flag, 0, vport->fc_rscn_id_cnt, 7775 vport->port_state, vport->num_disc_nodes, 7776 vport->gidft_inp); 7777 7778 /* To process RSCN, first compare RSCN data with NameServer */ 7779 vport->fc_ns_retry = 0; 7780 vport->num_disc_nodes = 0; 7781 7782 ndlp = lpfc_findnode_did(vport, NameServer_DID); 7783 if (ndlp && ndlp->nlp_state == NLP_STE_UNMAPPED_NODE) { 7784 /* Good ndlp, issue CT Request to NameServer. Need to 7785 * know how many gidfts were issued. If none, then just 7786 * flush the RSCN. Otherwise, the outstanding requests 7787 * need to complete. 7788 */ 7789 if (phba->cfg_ns_query == LPFC_NS_QUERY_GID_FT) { 7790 if (lpfc_issue_gidft(vport) > 0) 7791 return 1; 7792 } else if (phba->cfg_ns_query == LPFC_NS_QUERY_GID_PT) { 7793 if (lpfc_issue_gidpt(vport) > 0) 7794 return 1; 7795 } else { 7796 return 1; 7797 } 7798 } else { 7799 /* Nameserver login in question. Revalidate. */ 7800 if (ndlp) { 7801 ndlp->nlp_prev_state = NLP_STE_UNUSED_NODE; 7802 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE); 7803 } else { 7804 ndlp = lpfc_nlp_init(vport, NameServer_DID); 7805 if (!ndlp) { 7806 lpfc_els_flush_rscn(vport); 7807 return 0; 7808 } 7809 ndlp->nlp_prev_state = ndlp->nlp_state; 7810 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE); 7811 } 7812 ndlp->nlp_type |= NLP_FABRIC; 7813 lpfc_issue_els_plogi(vport, NameServer_DID, 0); 7814 /* Wait for NameServer login cmpl before we can 7815 * continue 7816 */ 7817 return 1; 7818 } 7819 7820 lpfc_els_flush_rscn(vport); 7821 return 0; 7822 } 7823 7824 /** 7825 * lpfc_els_rcv_flogi - Process an unsolicited flogi iocb 7826 * @vport: pointer to a host virtual N_Port data structure. 7827 * @cmdiocb: pointer to lpfc command iocb data structure. 7828 * @ndlp: pointer to a node-list data structure. 7829 * 7830 * This routine processes Fabric Login (FLOGI) IOCB received as an ELS 7831 * unsolicited event. An unsolicited FLOGI can be received in a point-to- 7832 * point topology. As an unsolicited FLOGI should not be received in a loop 7833 * mode, any unsolicited FLOGI received in loop mode shall be ignored. The 7834 * lpfc_check_sparm() routine is invoked to check the parameters in the 7835 * unsolicited FLOGI. If parameters validation failed, the routine 7836 * lpfc_els_rsp_reject() shall be called with reject reason code set to 7837 * LSEXP_SPARM_OPTIONS to reject the FLOGI. Otherwise, the Port WWN in the 7838 * FLOGI shall be compared with the Port WWN of the @vport to determine who 7839 * will initiate PLOGI. The higher lexicographical value party shall has 7840 * higher priority (as the winning port) and will initiate PLOGI and 7841 * communicate Port_IDs (Addresses) for both nodes in PLOGI. The result 7842 * of this will be marked in the @vport fc_flag field with FC_PT2PT_PLOGI 7843 * and then the lpfc_els_rsp_acc() routine is invoked to accept the FLOGI. 7844 * 7845 * Return code 7846 * 0 - Successfully processed the unsolicited flogi 7847 * 1 - Failed to process the unsolicited flogi 7848 **/ 7849 static int 7850 lpfc_els_rcv_flogi(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb, 7851 struct lpfc_nodelist *ndlp) 7852 { 7853 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 7854 struct lpfc_hba *phba = vport->phba; 7855 struct lpfc_dmabuf *pcmd = (struct lpfc_dmabuf *) cmdiocb->context2; 7856 uint32_t *lp = (uint32_t *) pcmd->virt; 7857 IOCB_t *icmd = &cmdiocb->iocb; 7858 struct serv_parm *sp; 7859 LPFC_MBOXQ_t *mbox; 7860 uint32_t cmd, did; 7861 int rc; 7862 uint32_t fc_flag = 0; 7863 uint32_t port_state = 0; 7864 7865 cmd = *lp++; 7866 sp = (struct serv_parm *) lp; 7867 7868 /* FLOGI received */ 7869 7870 lpfc_set_disctmo(vport); 7871 7872 if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) { 7873 /* We should never receive a FLOGI in loop mode, ignore it */ 7874 did = icmd->un.elsreq64.remoteID; 7875 7876 /* An FLOGI ELS command <elsCmd> was received from DID <did> in 7877 Loop Mode */ 7878 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 7879 "0113 An FLOGI ELS command x%x was " 7880 "received from DID x%x in Loop Mode\n", 7881 cmd, did); 7882 return 1; 7883 } 7884 7885 (void) lpfc_check_sparm(vport, ndlp, sp, CLASS3, 1); 7886 7887 /* 7888 * If our portname is greater than the remote portname, 7889 * then we initiate Nport login. 7890 */ 7891 7892 rc = memcmp(&vport->fc_portname, &sp->portName, 7893 sizeof(struct lpfc_name)); 7894 7895 if (!rc) { 7896 if (phba->sli_rev < LPFC_SLI_REV4) { 7897 mbox = mempool_alloc(phba->mbox_mem_pool, 7898 GFP_KERNEL); 7899 if (!mbox) 7900 return 1; 7901 lpfc_linkdown(phba); 7902 lpfc_init_link(phba, mbox, 7903 phba->cfg_topology, 7904 phba->cfg_link_speed); 7905 mbox->u.mb.un.varInitLnk.lipsr_AL_PA = 0; 7906 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl; 7907 mbox->vport = vport; 7908 rc = lpfc_sli_issue_mbox(phba, mbox, 7909 MBX_NOWAIT); 7910 lpfc_set_loopback_flag(phba); 7911 if (rc == MBX_NOT_FINISHED) 7912 mempool_free(mbox, phba->mbox_mem_pool); 7913 return 1; 7914 } 7915 7916 /* abort the flogi coming back to ourselves 7917 * due to external loopback on the port. 7918 */ 7919 lpfc_els_abort_flogi(phba); 7920 return 0; 7921 7922 } else if (rc > 0) { /* greater than */ 7923 spin_lock_irq(shost->host_lock); 7924 vport->fc_flag |= FC_PT2PT_PLOGI; 7925 spin_unlock_irq(shost->host_lock); 7926 7927 /* If we have the high WWPN we can assign our own 7928 * myDID; otherwise, we have to WAIT for a PLOGI 7929 * from the remote NPort to find out what it 7930 * will be. 7931 */ 7932 vport->fc_myDID = PT2PT_LocalID; 7933 } else { 7934 vport->fc_myDID = PT2PT_RemoteID; 7935 } 7936 7937 /* 7938 * The vport state should go to LPFC_FLOGI only 7939 * AFTER we issue a FLOGI, not receive one. 7940 */ 7941 spin_lock_irq(shost->host_lock); 7942 fc_flag = vport->fc_flag; 7943 port_state = vport->port_state; 7944 vport->fc_flag |= FC_PT2PT; 7945 vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP); 7946 7947 /* Acking an unsol FLOGI. Count 1 for link bounce 7948 * work-around. 7949 */ 7950 vport->rcv_flogi_cnt++; 7951 spin_unlock_irq(shost->host_lock); 7952 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, 7953 "3311 Rcv Flogi PS x%x new PS x%x " 7954 "fc_flag x%x new fc_flag x%x\n", 7955 port_state, vport->port_state, 7956 fc_flag, vport->fc_flag); 7957 7958 /* 7959 * We temporarily set fc_myDID to make it look like we are 7960 * a Fabric. This is done just so we end up with the right 7961 * did / sid on the FLOGI ACC rsp. 7962 */ 7963 did = vport->fc_myDID; 7964 vport->fc_myDID = Fabric_DID; 7965 7966 memcpy(&phba->fc_fabparam, sp, sizeof(struct serv_parm)); 7967 7968 /* Defer ACC response until AFTER we issue a FLOGI */ 7969 if (!(phba->hba_flag & HBA_FLOGI_ISSUED)) { 7970 phba->defer_flogi_acc_rx_id = cmdiocb->iocb.ulpContext; 7971 phba->defer_flogi_acc_ox_id = 7972 cmdiocb->iocb.unsli3.rcvsli3.ox_id; 7973 7974 vport->fc_myDID = did; 7975 7976 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, 7977 "3344 Deferring FLOGI ACC: rx_id: x%x," 7978 " ox_id: x%x, hba_flag x%x\n", 7979 phba->defer_flogi_acc_rx_id, 7980 phba->defer_flogi_acc_ox_id, phba->hba_flag); 7981 7982 phba->defer_flogi_acc_flag = true; 7983 7984 return 0; 7985 } 7986 7987 /* Send back ACC */ 7988 lpfc_els_rsp_acc(vport, ELS_CMD_FLOGI, cmdiocb, ndlp, NULL); 7989 7990 /* Now lets put fc_myDID back to what its supposed to be */ 7991 vport->fc_myDID = did; 7992 7993 return 0; 7994 } 7995 7996 /** 7997 * lpfc_els_rcv_rnid - Process an unsolicited rnid iocb 7998 * @vport: pointer to a host virtual N_Port data structure. 7999 * @cmdiocb: pointer to lpfc command iocb data structure. 8000 * @ndlp: pointer to a node-list data structure. 8001 * 8002 * This routine processes Request Node Identification Data (RNID) IOCB 8003 * received as an ELS unsolicited event. Only when the RNID specified format 8004 * 0x0 or 0xDF (Topology Discovery Specific Node Identification Data) 8005 * present, this routine will invoke the lpfc_els_rsp_rnid_acc() routine to 8006 * Accept (ACC) the RNID ELS command. All the other RNID formats are 8007 * rejected by invoking the lpfc_els_rsp_reject() routine. 8008 * 8009 * Return code 8010 * 0 - Successfully processed rnid iocb (currently always return 0) 8011 **/ 8012 static int 8013 lpfc_els_rcv_rnid(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb, 8014 struct lpfc_nodelist *ndlp) 8015 { 8016 struct lpfc_dmabuf *pcmd; 8017 uint32_t *lp; 8018 RNID *rn; 8019 struct ls_rjt stat; 8020 8021 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2; 8022 lp = (uint32_t *) pcmd->virt; 8023 8024 lp++; 8025 rn = (RNID *) lp; 8026 8027 /* RNID received */ 8028 8029 switch (rn->Format) { 8030 case 0: 8031 case RNID_TOPOLOGY_DISC: 8032 /* Send back ACC */ 8033 lpfc_els_rsp_rnid_acc(vport, rn->Format, cmdiocb, ndlp); 8034 break; 8035 default: 8036 /* Reject this request because format not supported */ 8037 stat.un.b.lsRjtRsvd0 = 0; 8038 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC; 8039 stat.un.b.lsRjtRsnCodeExp = LSEXP_CANT_GIVE_DATA; 8040 stat.un.b.vendorUnique = 0; 8041 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, 8042 NULL); 8043 } 8044 return 0; 8045 } 8046 8047 /** 8048 * lpfc_els_rcv_echo - Process an unsolicited echo iocb 8049 * @vport: pointer to a host virtual N_Port data structure. 8050 * @cmdiocb: pointer to lpfc command iocb data structure. 8051 * @ndlp: pointer to a node-list data structure. 8052 * 8053 * Return code 8054 * 0 - Successfully processed echo iocb (currently always return 0) 8055 **/ 8056 static int 8057 lpfc_els_rcv_echo(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb, 8058 struct lpfc_nodelist *ndlp) 8059 { 8060 uint8_t *pcmd; 8061 8062 pcmd = (uint8_t *) (((struct lpfc_dmabuf *) cmdiocb->context2)->virt); 8063 8064 /* skip over first word of echo command to find echo data */ 8065 pcmd += sizeof(uint32_t); 8066 8067 lpfc_els_rsp_echo_acc(vport, pcmd, cmdiocb, ndlp); 8068 return 0; 8069 } 8070 8071 /** 8072 * lpfc_els_rcv_lirr - Process an unsolicited lirr iocb 8073 * @vport: pointer to a host virtual N_Port data structure. 8074 * @cmdiocb: pointer to lpfc command iocb data structure. 8075 * @ndlp: pointer to a node-list data structure. 8076 * 8077 * This routine processes a Link Incident Report Registration(LIRR) IOCB 8078 * received as an ELS unsolicited event. Currently, this function just invokes 8079 * the lpfc_els_rsp_reject() routine to reject the LIRR IOCB unconditionally. 8080 * 8081 * Return code 8082 * 0 - Successfully processed lirr iocb (currently always return 0) 8083 **/ 8084 static int 8085 lpfc_els_rcv_lirr(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb, 8086 struct lpfc_nodelist *ndlp) 8087 { 8088 struct ls_rjt stat; 8089 8090 /* For now, unconditionally reject this command */ 8091 stat.un.b.lsRjtRsvd0 = 0; 8092 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC; 8093 stat.un.b.lsRjtRsnCodeExp = LSEXP_CANT_GIVE_DATA; 8094 stat.un.b.vendorUnique = 0; 8095 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL); 8096 return 0; 8097 } 8098 8099 /** 8100 * lpfc_els_rcv_rrq - Process an unsolicited rrq iocb 8101 * @vport: pointer to a host virtual N_Port data structure. 8102 * @cmdiocb: pointer to lpfc command iocb data structure. 8103 * @ndlp: pointer to a node-list data structure. 8104 * 8105 * This routine processes a Reinstate Recovery Qualifier (RRQ) IOCB 8106 * received as an ELS unsolicited event. A request to RRQ shall only 8107 * be accepted if the Originator Nx_Port N_Port_ID or the Responder 8108 * Nx_Port N_Port_ID of the target Exchange is the same as the 8109 * N_Port_ID of the Nx_Port that makes the request. If the RRQ is 8110 * not accepted, an LS_RJT with reason code "Unable to perform 8111 * command request" and reason code explanation "Invalid Originator 8112 * S_ID" shall be returned. For now, we just unconditionally accept 8113 * RRQ from the target. 8114 **/ 8115 static void 8116 lpfc_els_rcv_rrq(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb, 8117 struct lpfc_nodelist *ndlp) 8118 { 8119 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL); 8120 if (vport->phba->sli_rev == LPFC_SLI_REV4) 8121 lpfc_els_clear_rrq(vport, cmdiocb, ndlp); 8122 } 8123 8124 /** 8125 * lpfc_els_rsp_rls_acc - Completion callbk func for MBX_READ_LNK_STAT mbox cmd 8126 * @phba: pointer to lpfc hba data structure. 8127 * @pmb: pointer to the driver internal queue element for mailbox command. 8128 * 8129 * This routine is the completion callback function for the MBX_READ_LNK_STAT 8130 * mailbox command. This callback function is to actually send the Accept 8131 * (ACC) response to a Read Link Status (RLS) unsolicited IOCB event. It 8132 * collects the link statistics from the completion of the MBX_READ_LNK_STAT 8133 * mailbox command, constructs the RLS response with the link statistics 8134 * collected, and then invokes the lpfc_sli_issue_iocb() routine to send ACC 8135 * response to the RLS. 8136 * 8137 * Note that the ndlp reference count will be incremented by 1 for holding the 8138 * ndlp and the reference to ndlp will be stored into the context1 field of 8139 * the IOCB for the completion callback function to the RLS Accept Response 8140 * ELS IOCB command. 8141 * 8142 **/ 8143 static void 8144 lpfc_els_rsp_rls_acc(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 8145 { 8146 int rc = 0; 8147 MAILBOX_t *mb; 8148 IOCB_t *icmd; 8149 struct RLS_RSP *rls_rsp; 8150 uint8_t *pcmd; 8151 struct lpfc_iocbq *elsiocb; 8152 struct lpfc_nodelist *ndlp; 8153 uint16_t oxid; 8154 uint16_t rxid; 8155 uint32_t cmdsize; 8156 8157 mb = &pmb->u.mb; 8158 8159 ndlp = (struct lpfc_nodelist *)pmb->ctx_ndlp; 8160 rxid = (uint16_t)((unsigned long)(pmb->ctx_buf) & 0xffff); 8161 oxid = (uint16_t)(((unsigned long)(pmb->ctx_buf) >> 16) & 0xffff); 8162 pmb->ctx_buf = NULL; 8163 pmb->ctx_ndlp = NULL; 8164 8165 if (mb->mbxStatus) { 8166 mempool_free(pmb, phba->mbox_mem_pool); 8167 return; 8168 } 8169 8170 cmdsize = sizeof(struct RLS_RSP) + sizeof(uint32_t); 8171 elsiocb = lpfc_prep_els_iocb(phba->pport, 0, cmdsize, 8172 lpfc_max_els_tries, ndlp, 8173 ndlp->nlp_DID, ELS_CMD_ACC); 8174 8175 /* Decrement the ndlp reference count from previous mbox command */ 8176 lpfc_nlp_put(ndlp); 8177 8178 if (!elsiocb) { 8179 mempool_free(pmb, phba->mbox_mem_pool); 8180 return; 8181 } 8182 8183 icmd = &elsiocb->iocb; 8184 icmd->ulpContext = rxid; 8185 icmd->unsli3.rcvsli3.ox_id = oxid; 8186 8187 pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt); 8188 *((uint32_t *) (pcmd)) = ELS_CMD_ACC; 8189 pcmd += sizeof(uint32_t); /* Skip past command */ 8190 rls_rsp = (struct RLS_RSP *)pcmd; 8191 8192 rls_rsp->linkFailureCnt = cpu_to_be32(mb->un.varRdLnk.linkFailureCnt); 8193 rls_rsp->lossSyncCnt = cpu_to_be32(mb->un.varRdLnk.lossSyncCnt); 8194 rls_rsp->lossSignalCnt = cpu_to_be32(mb->un.varRdLnk.lossSignalCnt); 8195 rls_rsp->primSeqErrCnt = cpu_to_be32(mb->un.varRdLnk.primSeqErrCnt); 8196 rls_rsp->invalidXmitWord = cpu_to_be32(mb->un.varRdLnk.invalidXmitWord); 8197 rls_rsp->crcCnt = cpu_to_be32(mb->un.varRdLnk.crcCnt); 8198 mempool_free(pmb, phba->mbox_mem_pool); 8199 /* Xmit ELS RLS ACC response tag <ulpIoTag> */ 8200 lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_ELS, 8201 "2874 Xmit ELS RLS ACC response tag x%x xri x%x, " 8202 "did x%x, nlp_flag x%x, nlp_state x%x, rpi x%x\n", 8203 elsiocb->iotag, elsiocb->iocb.ulpContext, 8204 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state, 8205 ndlp->nlp_rpi); 8206 elsiocb->iocb_cmpl = lpfc_cmpl_els_rsp; 8207 phba->fc_stat.elsXmitACC++; 8208 elsiocb->context1 = lpfc_nlp_get(ndlp); 8209 if (!elsiocb->context1) { 8210 lpfc_els_free_iocb(phba, elsiocb); 8211 return; 8212 } 8213 8214 rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0); 8215 if (rc == IOCB_ERROR) { 8216 lpfc_els_free_iocb(phba, elsiocb); 8217 lpfc_nlp_put(ndlp); 8218 } 8219 return; 8220 } 8221 8222 /** 8223 * lpfc_els_rcv_rls - Process an unsolicited rls iocb 8224 * @vport: pointer to a host virtual N_Port data structure. 8225 * @cmdiocb: pointer to lpfc command iocb data structure. 8226 * @ndlp: pointer to a node-list data structure. 8227 * 8228 * This routine processes Read Link Status (RLS) IOCB received as an 8229 * ELS unsolicited event. It first checks the remote port state. If the 8230 * remote port is not in NLP_STE_UNMAPPED_NODE state or NLP_STE_MAPPED_NODE 8231 * state, it invokes the lpfc_els_rsl_reject() routine to send the reject 8232 * response. Otherwise, it issue the MBX_READ_LNK_STAT mailbox command 8233 * for reading the HBA link statistics. It is for the callback function, 8234 * lpfc_els_rsp_rls_acc(), set to the MBX_READ_LNK_STAT mailbox command 8235 * to actually sending out RPL Accept (ACC) response. 8236 * 8237 * Return codes 8238 * 0 - Successfully processed rls iocb (currently always return 0) 8239 **/ 8240 static int 8241 lpfc_els_rcv_rls(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb, 8242 struct lpfc_nodelist *ndlp) 8243 { 8244 struct lpfc_hba *phba = vport->phba; 8245 LPFC_MBOXQ_t *mbox; 8246 struct ls_rjt stat; 8247 8248 if ((ndlp->nlp_state != NLP_STE_UNMAPPED_NODE) && 8249 (ndlp->nlp_state != NLP_STE_MAPPED_NODE)) 8250 /* reject the unsolicited RLS request and done with it */ 8251 goto reject_out; 8252 8253 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_ATOMIC); 8254 if (mbox) { 8255 lpfc_read_lnk_stat(phba, mbox); 8256 mbox->ctx_buf = (void *)((unsigned long) 8257 ((cmdiocb->iocb.unsli3.rcvsli3.ox_id << 16) | 8258 cmdiocb->iocb.ulpContext)); /* rx_id */ 8259 mbox->ctx_ndlp = lpfc_nlp_get(ndlp); 8260 if (!mbox->ctx_ndlp) 8261 goto node_err; 8262 mbox->vport = vport; 8263 mbox->mbox_cmpl = lpfc_els_rsp_rls_acc; 8264 if (lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT) 8265 != MBX_NOT_FINISHED) 8266 /* Mbox completion will send ELS Response */ 8267 return 0; 8268 /* Decrement reference count used for the failed mbox 8269 * command. 8270 */ 8271 lpfc_nlp_put(ndlp); 8272 node_err: 8273 mempool_free(mbox, phba->mbox_mem_pool); 8274 } 8275 reject_out: 8276 /* issue rejection response */ 8277 stat.un.b.lsRjtRsvd0 = 0; 8278 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC; 8279 stat.un.b.lsRjtRsnCodeExp = LSEXP_CANT_GIVE_DATA; 8280 stat.un.b.vendorUnique = 0; 8281 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL); 8282 return 0; 8283 } 8284 8285 /** 8286 * lpfc_els_rcv_rtv - Process an unsolicited rtv iocb 8287 * @vport: pointer to a host virtual N_Port data structure. 8288 * @cmdiocb: pointer to lpfc command iocb data structure. 8289 * @ndlp: pointer to a node-list data structure. 8290 * 8291 * This routine processes Read Timout Value (RTV) IOCB received as an 8292 * ELS unsolicited event. It first checks the remote port state. If the 8293 * remote port is not in NLP_STE_UNMAPPED_NODE state or NLP_STE_MAPPED_NODE 8294 * state, it invokes the lpfc_els_rsl_reject() routine to send the reject 8295 * response. Otherwise, it sends the Accept(ACC) response to a Read Timeout 8296 * Value (RTV) unsolicited IOCB event. 8297 * 8298 * Note that the ndlp reference count will be incremented by 1 for holding the 8299 * ndlp and the reference to ndlp will be stored into the context1 field of 8300 * the IOCB for the completion callback function to the RTV Accept Response 8301 * ELS IOCB command. 8302 * 8303 * Return codes 8304 * 0 - Successfully processed rtv iocb (currently always return 0) 8305 **/ 8306 static int 8307 lpfc_els_rcv_rtv(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb, 8308 struct lpfc_nodelist *ndlp) 8309 { 8310 int rc = 0; 8311 struct lpfc_hba *phba = vport->phba; 8312 struct ls_rjt stat; 8313 struct RTV_RSP *rtv_rsp; 8314 uint8_t *pcmd; 8315 struct lpfc_iocbq *elsiocb; 8316 uint32_t cmdsize; 8317 8318 8319 if ((ndlp->nlp_state != NLP_STE_UNMAPPED_NODE) && 8320 (ndlp->nlp_state != NLP_STE_MAPPED_NODE)) 8321 /* reject the unsolicited RTV request and done with it */ 8322 goto reject_out; 8323 8324 cmdsize = sizeof(struct RTV_RSP) + sizeof(uint32_t); 8325 elsiocb = lpfc_prep_els_iocb(phba->pport, 0, cmdsize, 8326 lpfc_max_els_tries, ndlp, 8327 ndlp->nlp_DID, ELS_CMD_ACC); 8328 8329 if (!elsiocb) 8330 return 1; 8331 8332 pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt); 8333 *((uint32_t *) (pcmd)) = ELS_CMD_ACC; 8334 pcmd += sizeof(uint32_t); /* Skip past command */ 8335 8336 /* use the command's xri in the response */ 8337 elsiocb->iocb.ulpContext = cmdiocb->iocb.ulpContext; /* Xri / rx_id */ 8338 elsiocb->iocb.unsli3.rcvsli3.ox_id = cmdiocb->iocb.unsli3.rcvsli3.ox_id; 8339 8340 rtv_rsp = (struct RTV_RSP *)pcmd; 8341 8342 /* populate RTV payload */ 8343 rtv_rsp->ratov = cpu_to_be32(phba->fc_ratov * 1000); /* report msecs */ 8344 rtv_rsp->edtov = cpu_to_be32(phba->fc_edtov); 8345 bf_set(qtov_edtovres, rtv_rsp, phba->fc_edtovResol ? 1 : 0); 8346 bf_set(qtov_rttov, rtv_rsp, 0); /* Field is for FC ONLY */ 8347 rtv_rsp->qtov = cpu_to_be32(rtv_rsp->qtov); 8348 8349 /* Xmit ELS RLS ACC response tag <ulpIoTag> */ 8350 lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_ELS, 8351 "2875 Xmit ELS RTV ACC response tag x%x xri x%x, " 8352 "did x%x, nlp_flag x%x, nlp_state x%x, rpi x%x, " 8353 "Data: x%x x%x x%x\n", 8354 elsiocb->iotag, elsiocb->iocb.ulpContext, 8355 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state, 8356 ndlp->nlp_rpi, 8357 rtv_rsp->ratov, rtv_rsp->edtov, rtv_rsp->qtov); 8358 elsiocb->iocb_cmpl = lpfc_cmpl_els_rsp; 8359 phba->fc_stat.elsXmitACC++; 8360 elsiocb->context1 = lpfc_nlp_get(ndlp); 8361 if (!elsiocb->context1) { 8362 lpfc_els_free_iocb(phba, elsiocb); 8363 return 0; 8364 } 8365 8366 rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0); 8367 if (rc == IOCB_ERROR) { 8368 lpfc_els_free_iocb(phba, elsiocb); 8369 lpfc_nlp_put(ndlp); 8370 } 8371 return 0; 8372 8373 reject_out: 8374 /* issue rejection response */ 8375 stat.un.b.lsRjtRsvd0 = 0; 8376 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC; 8377 stat.un.b.lsRjtRsnCodeExp = LSEXP_CANT_GIVE_DATA; 8378 stat.un.b.vendorUnique = 0; 8379 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL); 8380 return 0; 8381 } 8382 8383 /* lpfc_issue_els_rrq - Process an unsolicited rrq iocb 8384 * @vport: pointer to a host virtual N_Port data structure. 8385 * @ndlp: pointer to a node-list data structure. 8386 * @did: DID of the target. 8387 * @rrq: Pointer to the rrq struct. 8388 * 8389 * Build a ELS RRQ command and send it to the target. If the issue_iocb is 8390 * Successful the the completion handler will clear the RRQ. 8391 * 8392 * Return codes 8393 * 0 - Successfully sent rrq els iocb. 8394 * 1 - Failed to send rrq els iocb. 8395 **/ 8396 static int 8397 lpfc_issue_els_rrq(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 8398 uint32_t did, struct lpfc_node_rrq *rrq) 8399 { 8400 struct lpfc_hba *phba = vport->phba; 8401 struct RRQ *els_rrq; 8402 struct lpfc_iocbq *elsiocb; 8403 uint8_t *pcmd; 8404 uint16_t cmdsize; 8405 int ret; 8406 8407 if (!ndlp) 8408 return 1; 8409 8410 /* If ndlp is not NULL, we will bump the reference count on it */ 8411 cmdsize = (sizeof(uint32_t) + sizeof(struct RRQ)); 8412 elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, 0, ndlp, did, 8413 ELS_CMD_RRQ); 8414 if (!elsiocb) 8415 return 1; 8416 8417 pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt); 8418 8419 /* For RRQ request, remainder of payload is Exchange IDs */ 8420 *((uint32_t *) (pcmd)) = ELS_CMD_RRQ; 8421 pcmd += sizeof(uint32_t); 8422 els_rrq = (struct RRQ *) pcmd; 8423 8424 bf_set(rrq_oxid, els_rrq, phba->sli4_hba.xri_ids[rrq->xritag]); 8425 bf_set(rrq_rxid, els_rrq, rrq->rxid); 8426 bf_set(rrq_did, els_rrq, vport->fc_myDID); 8427 els_rrq->rrq = cpu_to_be32(els_rrq->rrq); 8428 els_rrq->rrq_exchg = cpu_to_be32(els_rrq->rrq_exchg); 8429 8430 8431 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, 8432 "Issue RRQ: did:x%x", 8433 did, rrq->xritag, rrq->rxid); 8434 elsiocb->context_un.rrq = rrq; 8435 elsiocb->iocb_cmpl = lpfc_cmpl_els_rrq; 8436 8437 lpfc_nlp_get(ndlp); 8438 elsiocb->context1 = ndlp; 8439 8440 ret = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0); 8441 if (ret == IOCB_ERROR) 8442 goto io_err; 8443 return 0; 8444 8445 io_err: 8446 lpfc_els_free_iocb(phba, elsiocb); 8447 lpfc_nlp_put(ndlp); 8448 return 1; 8449 } 8450 8451 /** 8452 * lpfc_send_rrq - Sends ELS RRQ if needed. 8453 * @phba: pointer to lpfc hba data structure. 8454 * @rrq: pointer to the active rrq. 8455 * 8456 * This routine will call the lpfc_issue_els_rrq if the rrq is 8457 * still active for the xri. If this function returns a failure then 8458 * the caller needs to clean up the RRQ by calling lpfc_clr_active_rrq. 8459 * 8460 * Returns 0 Success. 8461 * 1 Failure. 8462 **/ 8463 int 8464 lpfc_send_rrq(struct lpfc_hba *phba, struct lpfc_node_rrq *rrq) 8465 { 8466 struct lpfc_nodelist *ndlp = lpfc_findnode_did(rrq->vport, 8467 rrq->nlp_DID); 8468 if (!ndlp) 8469 return 1; 8470 8471 if (lpfc_test_rrq_active(phba, ndlp, rrq->xritag)) 8472 return lpfc_issue_els_rrq(rrq->vport, ndlp, 8473 rrq->nlp_DID, rrq); 8474 else 8475 return 1; 8476 } 8477 8478 /** 8479 * lpfc_els_rsp_rpl_acc - Issue an accept rpl els command 8480 * @vport: pointer to a host virtual N_Port data structure. 8481 * @cmdsize: size of the ELS command. 8482 * @oldiocb: pointer to the original lpfc command iocb data structure. 8483 * @ndlp: pointer to a node-list data structure. 8484 * 8485 * This routine issuees an Accept (ACC) Read Port List (RPL) ELS command. 8486 * It is to be called by the lpfc_els_rcv_rpl() routine to accept the RPL. 8487 * 8488 * Note that the ndlp reference count will be incremented by 1 for holding the 8489 * ndlp and the reference to ndlp will be stored into the context1 field of 8490 * the IOCB for the completion callback function to the RPL Accept Response 8491 * ELS command. 8492 * 8493 * Return code 8494 * 0 - Successfully issued ACC RPL ELS command 8495 * 1 - Failed to issue ACC RPL ELS command 8496 **/ 8497 static int 8498 lpfc_els_rsp_rpl_acc(struct lpfc_vport *vport, uint16_t cmdsize, 8499 struct lpfc_iocbq *oldiocb, struct lpfc_nodelist *ndlp) 8500 { 8501 int rc = 0; 8502 struct lpfc_hba *phba = vport->phba; 8503 IOCB_t *icmd, *oldcmd; 8504 RPL_RSP rpl_rsp; 8505 struct lpfc_iocbq *elsiocb; 8506 uint8_t *pcmd; 8507 8508 elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry, ndlp, 8509 ndlp->nlp_DID, ELS_CMD_ACC); 8510 8511 if (!elsiocb) 8512 return 1; 8513 8514 icmd = &elsiocb->iocb; 8515 oldcmd = &oldiocb->iocb; 8516 icmd->ulpContext = oldcmd->ulpContext; /* Xri / rx_id */ 8517 icmd->unsli3.rcvsli3.ox_id = oldcmd->unsli3.rcvsli3.ox_id; 8518 8519 pcmd = (((struct lpfc_dmabuf *) elsiocb->context2)->virt); 8520 *((uint32_t *) (pcmd)) = ELS_CMD_ACC; 8521 pcmd += sizeof(uint16_t); 8522 *((uint16_t *)(pcmd)) = be16_to_cpu(cmdsize); 8523 pcmd += sizeof(uint16_t); 8524 8525 /* Setup the RPL ACC payload */ 8526 rpl_rsp.listLen = be32_to_cpu(1); 8527 rpl_rsp.index = 0; 8528 rpl_rsp.port_num_blk.portNum = 0; 8529 rpl_rsp.port_num_blk.portID = be32_to_cpu(vport->fc_myDID); 8530 memcpy(&rpl_rsp.port_num_blk.portName, &vport->fc_portname, 8531 sizeof(struct lpfc_name)); 8532 memcpy(pcmd, &rpl_rsp, cmdsize - sizeof(uint32_t)); 8533 /* Xmit ELS RPL ACC response tag <ulpIoTag> */ 8534 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, 8535 "0120 Xmit ELS RPL ACC response tag x%x " 8536 "xri x%x, did x%x, nlp_flag x%x, nlp_state x%x, " 8537 "rpi x%x\n", 8538 elsiocb->iotag, elsiocb->iocb.ulpContext, 8539 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state, 8540 ndlp->nlp_rpi); 8541 elsiocb->iocb_cmpl = lpfc_cmpl_els_rsp; 8542 phba->fc_stat.elsXmitACC++; 8543 elsiocb->context1 = lpfc_nlp_get(ndlp); 8544 if (!elsiocb->context1) { 8545 lpfc_els_free_iocb(phba, elsiocb); 8546 return 1; 8547 } 8548 8549 rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0); 8550 if (rc == IOCB_ERROR) { 8551 lpfc_els_free_iocb(phba, elsiocb); 8552 lpfc_nlp_put(ndlp); 8553 return 1; 8554 } 8555 8556 return 0; 8557 } 8558 8559 /** 8560 * lpfc_els_rcv_rpl - Process an unsolicited rpl iocb 8561 * @vport: pointer to a host virtual N_Port data structure. 8562 * @cmdiocb: pointer to lpfc command iocb data structure. 8563 * @ndlp: pointer to a node-list data structure. 8564 * 8565 * This routine processes Read Port List (RPL) IOCB received as an ELS 8566 * unsolicited event. It first checks the remote port state. If the remote 8567 * port is not in NLP_STE_UNMAPPED_NODE and NLP_STE_MAPPED_NODE states, it 8568 * invokes the lpfc_els_rsp_reject() routine to send reject response. 8569 * Otherwise, this routine then invokes the lpfc_els_rsp_rpl_acc() routine 8570 * to accept the RPL. 8571 * 8572 * Return code 8573 * 0 - Successfully processed rpl iocb (currently always return 0) 8574 **/ 8575 static int 8576 lpfc_els_rcv_rpl(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb, 8577 struct lpfc_nodelist *ndlp) 8578 { 8579 struct lpfc_dmabuf *pcmd; 8580 uint32_t *lp; 8581 uint32_t maxsize; 8582 uint16_t cmdsize; 8583 RPL *rpl; 8584 struct ls_rjt stat; 8585 8586 if ((ndlp->nlp_state != NLP_STE_UNMAPPED_NODE) && 8587 (ndlp->nlp_state != NLP_STE_MAPPED_NODE)) { 8588 /* issue rejection response */ 8589 stat.un.b.lsRjtRsvd0 = 0; 8590 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC; 8591 stat.un.b.lsRjtRsnCodeExp = LSEXP_CANT_GIVE_DATA; 8592 stat.un.b.vendorUnique = 0; 8593 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, 8594 NULL); 8595 /* rejected the unsolicited RPL request and done with it */ 8596 return 0; 8597 } 8598 8599 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2; 8600 lp = (uint32_t *) pcmd->virt; 8601 rpl = (RPL *) (lp + 1); 8602 maxsize = be32_to_cpu(rpl->maxsize); 8603 8604 /* We support only one port */ 8605 if ((rpl->index == 0) && 8606 ((maxsize == 0) || 8607 ((maxsize * sizeof(uint32_t)) >= sizeof(RPL_RSP)))) { 8608 cmdsize = sizeof(uint32_t) + sizeof(RPL_RSP); 8609 } else { 8610 cmdsize = sizeof(uint32_t) + maxsize * sizeof(uint32_t); 8611 } 8612 lpfc_els_rsp_rpl_acc(vport, cmdsize, cmdiocb, ndlp); 8613 8614 return 0; 8615 } 8616 8617 /** 8618 * lpfc_els_rcv_farp - Process an unsolicited farp request els command 8619 * @vport: pointer to a virtual N_Port data structure. 8620 * @cmdiocb: pointer to lpfc command iocb data structure. 8621 * @ndlp: pointer to a node-list data structure. 8622 * 8623 * This routine processes Fibre Channel Address Resolution Protocol 8624 * (FARP) Request IOCB received as an ELS unsolicited event. Currently, 8625 * the lpfc driver only supports matching on WWPN or WWNN for FARP. As such, 8626 * FARP_MATCH_PORT flag and FARP_MATCH_NODE flag are checked against the 8627 * Match Flag in the FARP request IOCB: if FARP_MATCH_PORT flag is set, the 8628 * remote PortName is compared against the FC PortName stored in the @vport 8629 * data structure; if FARP_MATCH_NODE flag is set, the remote NodeName is 8630 * compared against the FC NodeName stored in the @vport data structure. 8631 * If any of these matches and the FARP_REQUEST_FARPR flag is set in the 8632 * FARP request IOCB Response Flag, the lpfc_issue_els_farpr() routine is 8633 * invoked to send out FARP Response to the remote node. Before sending the 8634 * FARP Response, however, the FARP_REQUEST_PLOGI flag is check in the FARP 8635 * request IOCB Response Flag and, if it is set, the lpfc_issue_els_plogi() 8636 * routine is invoked to log into the remote port first. 8637 * 8638 * Return code 8639 * 0 - Either the FARP Match Mode not supported or successfully processed 8640 **/ 8641 static int 8642 lpfc_els_rcv_farp(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb, 8643 struct lpfc_nodelist *ndlp) 8644 { 8645 struct lpfc_dmabuf *pcmd; 8646 uint32_t *lp; 8647 IOCB_t *icmd; 8648 FARP *fp; 8649 uint32_t cnt, did; 8650 8651 icmd = &cmdiocb->iocb; 8652 did = icmd->un.elsreq64.remoteID; 8653 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2; 8654 lp = (uint32_t *) pcmd->virt; 8655 8656 lp++; 8657 fp = (FARP *) lp; 8658 /* FARP-REQ received from DID <did> */ 8659 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, 8660 "0601 FARP-REQ received from DID x%x\n", did); 8661 /* We will only support match on WWPN or WWNN */ 8662 if (fp->Mflags & ~(FARP_MATCH_NODE | FARP_MATCH_PORT)) { 8663 return 0; 8664 } 8665 8666 cnt = 0; 8667 /* If this FARP command is searching for my portname */ 8668 if (fp->Mflags & FARP_MATCH_PORT) { 8669 if (memcmp(&fp->RportName, &vport->fc_portname, 8670 sizeof(struct lpfc_name)) == 0) 8671 cnt = 1; 8672 } 8673 8674 /* If this FARP command is searching for my nodename */ 8675 if (fp->Mflags & FARP_MATCH_NODE) { 8676 if (memcmp(&fp->RnodeName, &vport->fc_nodename, 8677 sizeof(struct lpfc_name)) == 0) 8678 cnt = 1; 8679 } 8680 8681 if (cnt) { 8682 if ((ndlp->nlp_state == NLP_STE_UNMAPPED_NODE) || 8683 (ndlp->nlp_state == NLP_STE_MAPPED_NODE)) { 8684 /* Log back into the node before sending the FARP. */ 8685 if (fp->Rflags & FARP_REQUEST_PLOGI) { 8686 ndlp->nlp_prev_state = ndlp->nlp_state; 8687 lpfc_nlp_set_state(vport, ndlp, 8688 NLP_STE_PLOGI_ISSUE); 8689 lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0); 8690 } 8691 8692 /* Send a FARP response to that node */ 8693 if (fp->Rflags & FARP_REQUEST_FARPR) 8694 lpfc_issue_els_farpr(vport, did, 0); 8695 } 8696 } 8697 return 0; 8698 } 8699 8700 /** 8701 * lpfc_els_rcv_farpr - Process an unsolicited farp response iocb 8702 * @vport: pointer to a host virtual N_Port data structure. 8703 * @cmdiocb: pointer to lpfc command iocb data structure. 8704 * @ndlp: pointer to a node-list data structure. 8705 * 8706 * This routine processes Fibre Channel Address Resolution Protocol 8707 * Response (FARPR) IOCB received as an ELS unsolicited event. It simply 8708 * invokes the lpfc_els_rsp_acc() routine to the remote node to accept 8709 * the FARP response request. 8710 * 8711 * Return code 8712 * 0 - Successfully processed FARPR IOCB (currently always return 0) 8713 **/ 8714 static int 8715 lpfc_els_rcv_farpr(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb, 8716 struct lpfc_nodelist *ndlp) 8717 { 8718 struct lpfc_dmabuf *pcmd; 8719 uint32_t *lp; 8720 IOCB_t *icmd; 8721 uint32_t did; 8722 8723 icmd = &cmdiocb->iocb; 8724 did = icmd->un.elsreq64.remoteID; 8725 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2; 8726 lp = (uint32_t *) pcmd->virt; 8727 8728 lp++; 8729 /* FARP-RSP received from DID <did> */ 8730 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, 8731 "0600 FARP-RSP received from DID x%x\n", did); 8732 /* ACCEPT the Farp resp request */ 8733 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL); 8734 8735 return 0; 8736 } 8737 8738 /** 8739 * lpfc_els_rcv_fan - Process an unsolicited fan iocb command 8740 * @vport: pointer to a host virtual N_Port data structure. 8741 * @cmdiocb: pointer to lpfc command iocb data structure. 8742 * @fan_ndlp: pointer to a node-list data structure. 8743 * 8744 * This routine processes a Fabric Address Notification (FAN) IOCB 8745 * command received as an ELS unsolicited event. The FAN ELS command will 8746 * only be processed on a physical port (i.e., the @vport represents the 8747 * physical port). The fabric NodeName and PortName from the FAN IOCB are 8748 * compared against those in the phba data structure. If any of those is 8749 * different, the lpfc_initial_flogi() routine is invoked to initialize 8750 * Fabric Login (FLOGI) to the fabric to start the discover over. Otherwise, 8751 * if both of those are identical, the lpfc_issue_fabric_reglogin() routine 8752 * is invoked to register login to the fabric. 8753 * 8754 * Return code 8755 * 0 - Successfully processed fan iocb (currently always return 0). 8756 **/ 8757 static int 8758 lpfc_els_rcv_fan(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb, 8759 struct lpfc_nodelist *fan_ndlp) 8760 { 8761 struct lpfc_hba *phba = vport->phba; 8762 uint32_t *lp; 8763 FAN *fp; 8764 8765 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, "0265 FAN received\n"); 8766 lp = (uint32_t *)((struct lpfc_dmabuf *)cmdiocb->context2)->virt; 8767 fp = (FAN *) ++lp; 8768 /* FAN received; Fan does not have a reply sequence */ 8769 if ((vport == phba->pport) && 8770 (vport->port_state == LPFC_LOCAL_CFG_LINK)) { 8771 if ((memcmp(&phba->fc_fabparam.nodeName, &fp->FnodeName, 8772 sizeof(struct lpfc_name))) || 8773 (memcmp(&phba->fc_fabparam.portName, &fp->FportName, 8774 sizeof(struct lpfc_name)))) { 8775 /* This port has switched fabrics. FLOGI is required */ 8776 lpfc_issue_init_vfi(vport); 8777 } else { 8778 /* FAN verified - skip FLOGI */ 8779 vport->fc_myDID = vport->fc_prevDID; 8780 if (phba->sli_rev < LPFC_SLI_REV4) 8781 lpfc_issue_fabric_reglogin(vport); 8782 else { 8783 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, 8784 "3138 Need register VFI: (x%x/%x)\n", 8785 vport->fc_prevDID, vport->fc_myDID); 8786 lpfc_issue_reg_vfi(vport); 8787 } 8788 } 8789 } 8790 return 0; 8791 } 8792 8793 /** 8794 * lpfc_els_rcv_edc - Process an unsolicited EDC iocb 8795 * @vport: pointer to a host virtual N_Port data structure. 8796 * @cmdiocb: pointer to lpfc command iocb data structure. 8797 * @ndlp: pointer to a node-list data structure. 8798 * 8799 * Return code 8800 * 0 - Successfully processed echo iocb (currently always return 0) 8801 **/ 8802 static int 8803 lpfc_els_rcv_edc(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb, 8804 struct lpfc_nodelist *ndlp) 8805 { 8806 struct lpfc_hba *phba = vport->phba; 8807 struct fc_els_edc *edc_req; 8808 struct fc_tlv_desc *tlv; 8809 uint8_t *payload; 8810 uint32_t *ptr, dtag; 8811 const char *dtag_nm; 8812 int desc_cnt = 0, bytes_remain; 8813 bool rcv_cap_desc = false; 8814 8815 payload = ((struct lpfc_dmabuf *)cmdiocb->context2)->virt; 8816 8817 edc_req = (struct fc_els_edc *)payload; 8818 bytes_remain = be32_to_cpu(edc_req->desc_len); 8819 8820 ptr = (uint32_t *)payload; 8821 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS | LOG_CGN_MGMT, 8822 "3319 Rcv EDC payload len %d: x%x x%x x%x\n", 8823 bytes_remain, be32_to_cpu(*ptr), 8824 be32_to_cpu(*(ptr + 1)), be32_to_cpu(*(ptr + 2))); 8825 8826 /* No signal support unless there is a congestion descriptor */ 8827 phba->cgn_reg_signal = EDC_CG_SIG_NOTSUPPORTED; 8828 phba->cgn_sig_freq = 0; 8829 phba->cgn_reg_fpin = LPFC_CGN_FPIN_ALARM | LPFC_CGN_FPIN_WARN; 8830 8831 if (bytes_remain <= 0) 8832 goto out; 8833 8834 tlv = edc_req->desc; 8835 8836 /* 8837 * cycle through EDC diagnostic descriptors to find the 8838 * congestion signaling capability descriptor 8839 */ 8840 while (bytes_remain && !rcv_cap_desc) { 8841 if (bytes_remain < FC_TLV_DESC_HDR_SZ) { 8842 lpfc_printf_log(phba, KERN_WARNING, LOG_CGN_MGMT, 8843 "6464 Truncated TLV hdr on " 8844 "Diagnostic descriptor[%d]\n", 8845 desc_cnt); 8846 goto out; 8847 } 8848 8849 dtag = be32_to_cpu(tlv->desc_tag); 8850 switch (dtag) { 8851 case ELS_DTAG_LNK_FAULT_CAP: 8852 if (bytes_remain < FC_TLV_DESC_SZ_FROM_LENGTH(tlv) || 8853 FC_TLV_DESC_SZ_FROM_LENGTH(tlv) != 8854 sizeof(struct fc_diag_lnkflt_desc)) { 8855 lpfc_printf_log( 8856 phba, KERN_WARNING, LOG_CGN_MGMT, 8857 "6465 Truncated Link Fault Diagnostic " 8858 "descriptor[%d]: %d vs 0x%zx 0x%zx\n", 8859 desc_cnt, bytes_remain, 8860 FC_TLV_DESC_SZ_FROM_LENGTH(tlv), 8861 sizeof(struct fc_diag_cg_sig_desc)); 8862 goto out; 8863 } 8864 /* No action for Link Fault descriptor for now */ 8865 break; 8866 case ELS_DTAG_CG_SIGNAL_CAP: 8867 if (bytes_remain < FC_TLV_DESC_SZ_FROM_LENGTH(tlv) || 8868 FC_TLV_DESC_SZ_FROM_LENGTH(tlv) != 8869 sizeof(struct fc_diag_cg_sig_desc)) { 8870 lpfc_printf_log( 8871 phba, KERN_WARNING, LOG_CGN_MGMT, 8872 "6466 Truncated cgn signal Diagnostic " 8873 "descriptor[%d]: %d vs 0x%zx 0x%zx\n", 8874 desc_cnt, bytes_remain, 8875 FC_TLV_DESC_SZ_FROM_LENGTH(tlv), 8876 sizeof(struct fc_diag_cg_sig_desc)); 8877 goto out; 8878 } 8879 8880 phba->cgn_reg_fpin = phba->cgn_init_reg_fpin; 8881 phba->cgn_reg_signal = phba->cgn_init_reg_signal; 8882 8883 /* We start negotiation with lpfc_fabric_cgn_frequency. 8884 * When we process the EDC, we will settle on the 8885 * higher frequency. 8886 */ 8887 phba->cgn_sig_freq = lpfc_fabric_cgn_frequency; 8888 8889 lpfc_least_capable_settings( 8890 phba, (struct fc_diag_cg_sig_desc *)tlv); 8891 rcv_cap_desc = true; 8892 break; 8893 default: 8894 dtag_nm = lpfc_get_tlv_dtag_nm(dtag); 8895 lpfc_printf_log(phba, KERN_WARNING, LOG_CGN_MGMT, 8896 "6467 unknown Diagnostic " 8897 "Descriptor[%d]: tag x%x (%s)\n", 8898 desc_cnt, dtag, dtag_nm); 8899 } 8900 bytes_remain -= FC_TLV_DESC_SZ_FROM_LENGTH(tlv); 8901 tlv = fc_tlv_next_desc(tlv); 8902 desc_cnt++; 8903 } 8904 out: 8905 /* Need to send back an ACC */ 8906 lpfc_issue_els_edc_rsp(vport, cmdiocb, ndlp); 8907 8908 lpfc_config_cgn_signal(phba); 8909 return 0; 8910 } 8911 8912 /** 8913 * lpfc_els_timeout - Handler funciton to the els timer 8914 * @t: timer context used to obtain the vport. 8915 * 8916 * This routine is invoked by the ELS timer after timeout. It posts the ELS 8917 * timer timeout event by setting the WORKER_ELS_TMO bit to the work port 8918 * event bitmap and then invokes the lpfc_worker_wake_up() routine to wake 8919 * up the worker thread. It is for the worker thread to invoke the routine 8920 * lpfc_els_timeout_handler() to work on the posted event WORKER_ELS_TMO. 8921 **/ 8922 void 8923 lpfc_els_timeout(struct timer_list *t) 8924 { 8925 struct lpfc_vport *vport = from_timer(vport, t, els_tmofunc); 8926 struct lpfc_hba *phba = vport->phba; 8927 uint32_t tmo_posted; 8928 unsigned long iflag; 8929 8930 spin_lock_irqsave(&vport->work_port_lock, iflag); 8931 tmo_posted = vport->work_port_events & WORKER_ELS_TMO; 8932 if ((!tmo_posted) && (!(vport->load_flag & FC_UNLOADING))) 8933 vport->work_port_events |= WORKER_ELS_TMO; 8934 spin_unlock_irqrestore(&vport->work_port_lock, iflag); 8935 8936 if ((!tmo_posted) && (!(vport->load_flag & FC_UNLOADING))) 8937 lpfc_worker_wake_up(phba); 8938 return; 8939 } 8940 8941 8942 /** 8943 * lpfc_els_timeout_handler - Process an els timeout event 8944 * @vport: pointer to a virtual N_Port data structure. 8945 * 8946 * This routine is the actual handler function that processes an ELS timeout 8947 * event. It walks the ELS ring to get and abort all the IOCBs (except the 8948 * ABORT/CLOSE/FARP/FARPR/FDISC), which are associated with the @vport by 8949 * invoking the lpfc_sli_issue_abort_iotag() routine. 8950 **/ 8951 void 8952 lpfc_els_timeout_handler(struct lpfc_vport *vport) 8953 { 8954 struct lpfc_hba *phba = vport->phba; 8955 struct lpfc_sli_ring *pring; 8956 struct lpfc_iocbq *tmp_iocb, *piocb; 8957 IOCB_t *cmd = NULL; 8958 struct lpfc_dmabuf *pcmd; 8959 uint32_t els_command = 0; 8960 uint32_t timeout; 8961 uint32_t remote_ID = 0xffffffff; 8962 LIST_HEAD(abort_list); 8963 8964 8965 timeout = (uint32_t)(phba->fc_ratov << 1); 8966 8967 pring = lpfc_phba_elsring(phba); 8968 if (unlikely(!pring)) 8969 return; 8970 8971 if (phba->pport->load_flag & FC_UNLOADING) 8972 return; 8973 8974 spin_lock_irq(&phba->hbalock); 8975 if (phba->sli_rev == LPFC_SLI_REV4) 8976 spin_lock(&pring->ring_lock); 8977 8978 list_for_each_entry_safe(piocb, tmp_iocb, &pring->txcmplq, list) { 8979 cmd = &piocb->iocb; 8980 8981 if ((piocb->iocb_flag & LPFC_IO_LIBDFC) != 0 || 8982 piocb->iocb.ulpCommand == CMD_ABORT_XRI_CN || 8983 piocb->iocb.ulpCommand == CMD_CLOSE_XRI_CN) 8984 continue; 8985 8986 if (piocb->vport != vport) 8987 continue; 8988 8989 pcmd = (struct lpfc_dmabuf *) piocb->context2; 8990 if (pcmd) 8991 els_command = *(uint32_t *) (pcmd->virt); 8992 8993 if (els_command == ELS_CMD_FARP || 8994 els_command == ELS_CMD_FARPR || 8995 els_command == ELS_CMD_FDISC) 8996 continue; 8997 8998 if (piocb->drvrTimeout > 0) { 8999 if (piocb->drvrTimeout >= timeout) 9000 piocb->drvrTimeout -= timeout; 9001 else 9002 piocb->drvrTimeout = 0; 9003 continue; 9004 } 9005 9006 remote_ID = 0xffffffff; 9007 if (cmd->ulpCommand != CMD_GEN_REQUEST64_CR) 9008 remote_ID = cmd->un.elsreq64.remoteID; 9009 else { 9010 struct lpfc_nodelist *ndlp; 9011 ndlp = __lpfc_findnode_rpi(vport, cmd->ulpContext); 9012 if (ndlp) 9013 remote_ID = ndlp->nlp_DID; 9014 } 9015 list_add_tail(&piocb->dlist, &abort_list); 9016 } 9017 if (phba->sli_rev == LPFC_SLI_REV4) 9018 spin_unlock(&pring->ring_lock); 9019 spin_unlock_irq(&phba->hbalock); 9020 9021 list_for_each_entry_safe(piocb, tmp_iocb, &abort_list, dlist) { 9022 cmd = &piocb->iocb; 9023 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 9024 "0127 ELS timeout Data: x%x x%x x%x " 9025 "x%x\n", els_command, 9026 remote_ID, cmd->ulpCommand, cmd->ulpIoTag); 9027 spin_lock_irq(&phba->hbalock); 9028 list_del_init(&piocb->dlist); 9029 lpfc_sli_issue_abort_iotag(phba, pring, piocb, NULL); 9030 spin_unlock_irq(&phba->hbalock); 9031 } 9032 9033 /* Make sure HBA is alive */ 9034 lpfc_issue_hb_tmo(phba); 9035 9036 if (!list_empty(&pring->txcmplq)) 9037 if (!(phba->pport->load_flag & FC_UNLOADING)) 9038 mod_timer(&vport->els_tmofunc, 9039 jiffies + msecs_to_jiffies(1000 * timeout)); 9040 } 9041 9042 /** 9043 * lpfc_els_flush_cmd - Clean up the outstanding els commands to a vport 9044 * @vport: pointer to a host virtual N_Port data structure. 9045 * 9046 * This routine is used to clean up all the outstanding ELS commands on a 9047 * @vport. It first aborts the @vport by invoking lpfc_fabric_abort_vport() 9048 * routine. After that, it walks the ELS transmit queue to remove all the 9049 * IOCBs with the @vport other than the QUE_RING and ABORT/CLOSE IOCBs. For 9050 * the IOCBs with a non-NULL completion callback function, the callback 9051 * function will be invoked with the status set to IOSTAT_LOCAL_REJECT and 9052 * un.ulpWord[4] set to IOERR_SLI_ABORTED. For IOCBs with a NULL completion 9053 * callback function, the IOCB will simply be released. Finally, it walks 9054 * the ELS transmit completion queue to issue an abort IOCB to any transmit 9055 * completion queue IOCB that is associated with the @vport and is not 9056 * an IOCB from libdfc (i.e., the management plane IOCBs that are not 9057 * part of the discovery state machine) out to HBA by invoking the 9058 * lpfc_sli_issue_abort_iotag() routine. Note that this function issues the 9059 * abort IOCB to any transmit completion queueed IOCB, it does not guarantee 9060 * the IOCBs are aborted when this function returns. 9061 **/ 9062 void 9063 lpfc_els_flush_cmd(struct lpfc_vport *vport) 9064 { 9065 LIST_HEAD(abort_list); 9066 struct lpfc_hba *phba = vport->phba; 9067 struct lpfc_sli_ring *pring; 9068 struct lpfc_iocbq *tmp_iocb, *piocb; 9069 IOCB_t *cmd = NULL; 9070 unsigned long iflags = 0; 9071 9072 lpfc_fabric_abort_vport(vport); 9073 9074 /* 9075 * For SLI3, only the hbalock is required. But SLI4 needs to coordinate 9076 * with the ring insert operation. Because lpfc_sli_issue_abort_iotag 9077 * ultimately grabs the ring_lock, the driver must splice the list into 9078 * a working list and release the locks before calling the abort. 9079 */ 9080 spin_lock_irqsave(&phba->hbalock, iflags); 9081 pring = lpfc_phba_elsring(phba); 9082 9083 /* Bail out if we've no ELS wq, like in PCI error recovery case. */ 9084 if (unlikely(!pring)) { 9085 spin_unlock_irqrestore(&phba->hbalock, iflags); 9086 return; 9087 } 9088 9089 if (phba->sli_rev == LPFC_SLI_REV4) 9090 spin_lock(&pring->ring_lock); 9091 9092 /* First we need to issue aborts to outstanding cmds on txcmpl */ 9093 list_for_each_entry_safe(piocb, tmp_iocb, &pring->txcmplq, list) { 9094 if (piocb->iocb_flag & LPFC_IO_LIBDFC) 9095 continue; 9096 9097 if (piocb->vport != vport) 9098 continue; 9099 9100 if (piocb->iocb_flag & LPFC_DRIVER_ABORTED) 9101 continue; 9102 9103 /* On the ELS ring we can have ELS_REQUESTs or 9104 * GEN_REQUESTs waiting for a response. 9105 */ 9106 cmd = &piocb->iocb; 9107 if (cmd->ulpCommand == CMD_ELS_REQUEST64_CR) { 9108 list_add_tail(&piocb->dlist, &abort_list); 9109 9110 /* If the link is down when flushing ELS commands 9111 * the firmware will not complete them till after 9112 * the link comes back up. This may confuse 9113 * discovery for the new link up, so we need to 9114 * change the compl routine to just clean up the iocb 9115 * and avoid any retry logic. 9116 */ 9117 if (phba->link_state == LPFC_LINK_DOWN) 9118 piocb->iocb_cmpl = lpfc_cmpl_els_link_down; 9119 } 9120 if (cmd->ulpCommand == CMD_GEN_REQUEST64_CR) 9121 list_add_tail(&piocb->dlist, &abort_list); 9122 } 9123 9124 if (phba->sli_rev == LPFC_SLI_REV4) 9125 spin_unlock(&pring->ring_lock); 9126 spin_unlock_irqrestore(&phba->hbalock, iflags); 9127 9128 /* Abort each txcmpl iocb on aborted list and remove the dlist links. */ 9129 list_for_each_entry_safe(piocb, tmp_iocb, &abort_list, dlist) { 9130 spin_lock_irqsave(&phba->hbalock, iflags); 9131 list_del_init(&piocb->dlist); 9132 lpfc_sli_issue_abort_iotag(phba, pring, piocb, NULL); 9133 spin_unlock_irqrestore(&phba->hbalock, iflags); 9134 } 9135 /* Make sure HBA is alive */ 9136 lpfc_issue_hb_tmo(phba); 9137 9138 if (!list_empty(&abort_list)) 9139 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 9140 "3387 abort list for txq not empty\n"); 9141 INIT_LIST_HEAD(&abort_list); 9142 9143 spin_lock_irqsave(&phba->hbalock, iflags); 9144 if (phba->sli_rev == LPFC_SLI_REV4) 9145 spin_lock(&pring->ring_lock); 9146 9147 /* No need to abort the txq list, 9148 * just queue them up for lpfc_sli_cancel_iocbs 9149 */ 9150 list_for_each_entry_safe(piocb, tmp_iocb, &pring->txq, list) { 9151 cmd = &piocb->iocb; 9152 9153 if (piocb->iocb_flag & LPFC_IO_LIBDFC) { 9154 continue; 9155 } 9156 9157 /* Do not flush out the QUE_RING and ABORT/CLOSE iocbs */ 9158 if (cmd->ulpCommand == CMD_QUE_RING_BUF_CN || 9159 cmd->ulpCommand == CMD_QUE_RING_BUF64_CN || 9160 cmd->ulpCommand == CMD_CLOSE_XRI_CN || 9161 cmd->ulpCommand == CMD_ABORT_XRI_CN) 9162 continue; 9163 9164 if (piocb->vport != vport) 9165 continue; 9166 9167 list_del_init(&piocb->list); 9168 list_add_tail(&piocb->list, &abort_list); 9169 } 9170 9171 /* The same holds true for any FLOGI/FDISC on the fabric_iocb_list */ 9172 if (vport == phba->pport) { 9173 list_for_each_entry_safe(piocb, tmp_iocb, 9174 &phba->fabric_iocb_list, list) { 9175 cmd = &piocb->iocb; 9176 list_del_init(&piocb->list); 9177 list_add_tail(&piocb->list, &abort_list); 9178 } 9179 } 9180 9181 if (phba->sli_rev == LPFC_SLI_REV4) 9182 spin_unlock(&pring->ring_lock); 9183 spin_unlock_irqrestore(&phba->hbalock, iflags); 9184 9185 /* Cancel all the IOCBs from the completions list */ 9186 lpfc_sli_cancel_iocbs(phba, &abort_list, 9187 IOSTAT_LOCAL_REJECT, IOERR_SLI_ABORTED); 9188 9189 return; 9190 } 9191 9192 /** 9193 * lpfc_els_flush_all_cmd - Clean up all the outstanding els commands to a HBA 9194 * @phba: pointer to lpfc hba data structure. 9195 * 9196 * This routine is used to clean up all the outstanding ELS commands on a 9197 * @phba. It first aborts the @phba by invoking the lpfc_fabric_abort_hba() 9198 * routine. After that, it walks the ELS transmit queue to remove all the 9199 * IOCBs to the @phba other than the QUE_RING and ABORT/CLOSE IOCBs. For 9200 * the IOCBs with the completion callback function associated, the callback 9201 * function will be invoked with the status set to IOSTAT_LOCAL_REJECT and 9202 * un.ulpWord[4] set to IOERR_SLI_ABORTED. For IOCBs without the completion 9203 * callback function associated, the IOCB will simply be released. Finally, 9204 * it walks the ELS transmit completion queue to issue an abort IOCB to any 9205 * transmit completion queue IOCB that is not an IOCB from libdfc (i.e., the 9206 * management plane IOCBs that are not part of the discovery state machine) 9207 * out to HBA by invoking the lpfc_sli_issue_abort_iotag() routine. 9208 **/ 9209 void 9210 lpfc_els_flush_all_cmd(struct lpfc_hba *phba) 9211 { 9212 struct lpfc_vport *vport; 9213 9214 spin_lock_irq(&phba->port_list_lock); 9215 list_for_each_entry(vport, &phba->port_list, listentry) 9216 lpfc_els_flush_cmd(vport); 9217 spin_unlock_irq(&phba->port_list_lock); 9218 9219 return; 9220 } 9221 9222 /** 9223 * lpfc_send_els_failure_event - Posts an ELS command failure event 9224 * @phba: Pointer to hba context object. 9225 * @cmdiocbp: Pointer to command iocb which reported error. 9226 * @rspiocbp: Pointer to response iocb which reported error. 9227 * 9228 * This function sends an event when there is an ELS command 9229 * failure. 9230 **/ 9231 void 9232 lpfc_send_els_failure_event(struct lpfc_hba *phba, 9233 struct lpfc_iocbq *cmdiocbp, 9234 struct lpfc_iocbq *rspiocbp) 9235 { 9236 struct lpfc_vport *vport = cmdiocbp->vport; 9237 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 9238 struct lpfc_lsrjt_event lsrjt_event; 9239 struct lpfc_fabric_event_header fabric_event; 9240 struct ls_rjt stat; 9241 struct lpfc_nodelist *ndlp; 9242 uint32_t *pcmd; 9243 9244 ndlp = cmdiocbp->context1; 9245 if (!ndlp) 9246 return; 9247 9248 if (rspiocbp->iocb.ulpStatus == IOSTAT_LS_RJT) { 9249 lsrjt_event.header.event_type = FC_REG_ELS_EVENT; 9250 lsrjt_event.header.subcategory = LPFC_EVENT_LSRJT_RCV; 9251 memcpy(lsrjt_event.header.wwpn, &ndlp->nlp_portname, 9252 sizeof(struct lpfc_name)); 9253 memcpy(lsrjt_event.header.wwnn, &ndlp->nlp_nodename, 9254 sizeof(struct lpfc_name)); 9255 pcmd = (uint32_t *) (((struct lpfc_dmabuf *) 9256 cmdiocbp->context2)->virt); 9257 lsrjt_event.command = (pcmd != NULL) ? *pcmd : 0; 9258 stat.un.lsRjtError = be32_to_cpu(rspiocbp->iocb.un.ulpWord[4]); 9259 lsrjt_event.reason_code = stat.un.b.lsRjtRsnCode; 9260 lsrjt_event.explanation = stat.un.b.lsRjtRsnCodeExp; 9261 fc_host_post_vendor_event(shost, 9262 fc_get_event_number(), 9263 sizeof(lsrjt_event), 9264 (char *)&lsrjt_event, 9265 LPFC_NL_VENDOR_ID); 9266 return; 9267 } 9268 if ((rspiocbp->iocb.ulpStatus == IOSTAT_NPORT_BSY) || 9269 (rspiocbp->iocb.ulpStatus == IOSTAT_FABRIC_BSY)) { 9270 fabric_event.event_type = FC_REG_FABRIC_EVENT; 9271 if (rspiocbp->iocb.ulpStatus == IOSTAT_NPORT_BSY) 9272 fabric_event.subcategory = LPFC_EVENT_PORT_BUSY; 9273 else 9274 fabric_event.subcategory = LPFC_EVENT_FABRIC_BUSY; 9275 memcpy(fabric_event.wwpn, &ndlp->nlp_portname, 9276 sizeof(struct lpfc_name)); 9277 memcpy(fabric_event.wwnn, &ndlp->nlp_nodename, 9278 sizeof(struct lpfc_name)); 9279 fc_host_post_vendor_event(shost, 9280 fc_get_event_number(), 9281 sizeof(fabric_event), 9282 (char *)&fabric_event, 9283 LPFC_NL_VENDOR_ID); 9284 return; 9285 } 9286 9287 } 9288 9289 /** 9290 * lpfc_send_els_event - Posts unsolicited els event 9291 * @vport: Pointer to vport object. 9292 * @ndlp: Pointer FC node object. 9293 * @payload: ELS command code type. 9294 * 9295 * This function posts an event when there is an incoming 9296 * unsolicited ELS command. 9297 **/ 9298 static void 9299 lpfc_send_els_event(struct lpfc_vport *vport, 9300 struct lpfc_nodelist *ndlp, 9301 uint32_t *payload) 9302 { 9303 struct lpfc_els_event_header *els_data = NULL; 9304 struct lpfc_logo_event *logo_data = NULL; 9305 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 9306 9307 if (*payload == ELS_CMD_LOGO) { 9308 logo_data = kmalloc(sizeof(struct lpfc_logo_event), GFP_KERNEL); 9309 if (!logo_data) { 9310 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 9311 "0148 Failed to allocate memory " 9312 "for LOGO event\n"); 9313 return; 9314 } 9315 els_data = &logo_data->header; 9316 } else { 9317 els_data = kmalloc(sizeof(struct lpfc_els_event_header), 9318 GFP_KERNEL); 9319 if (!els_data) { 9320 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 9321 "0149 Failed to allocate memory " 9322 "for ELS event\n"); 9323 return; 9324 } 9325 } 9326 els_data->event_type = FC_REG_ELS_EVENT; 9327 switch (*payload) { 9328 case ELS_CMD_PLOGI: 9329 els_data->subcategory = LPFC_EVENT_PLOGI_RCV; 9330 break; 9331 case ELS_CMD_PRLO: 9332 els_data->subcategory = LPFC_EVENT_PRLO_RCV; 9333 break; 9334 case ELS_CMD_ADISC: 9335 els_data->subcategory = LPFC_EVENT_ADISC_RCV; 9336 break; 9337 case ELS_CMD_LOGO: 9338 els_data->subcategory = LPFC_EVENT_LOGO_RCV; 9339 /* Copy the WWPN in the LOGO payload */ 9340 memcpy(logo_data->logo_wwpn, &payload[2], 9341 sizeof(struct lpfc_name)); 9342 break; 9343 default: 9344 kfree(els_data); 9345 return; 9346 } 9347 memcpy(els_data->wwpn, &ndlp->nlp_portname, sizeof(struct lpfc_name)); 9348 memcpy(els_data->wwnn, &ndlp->nlp_nodename, sizeof(struct lpfc_name)); 9349 if (*payload == ELS_CMD_LOGO) { 9350 fc_host_post_vendor_event(shost, 9351 fc_get_event_number(), 9352 sizeof(struct lpfc_logo_event), 9353 (char *)logo_data, 9354 LPFC_NL_VENDOR_ID); 9355 kfree(logo_data); 9356 } else { 9357 fc_host_post_vendor_event(shost, 9358 fc_get_event_number(), 9359 sizeof(struct lpfc_els_event_header), 9360 (char *)els_data, 9361 LPFC_NL_VENDOR_ID); 9362 kfree(els_data); 9363 } 9364 9365 return; 9366 } 9367 9368 9369 DECLARE_ENUM2STR_LOOKUP(lpfc_get_fpin_li_event_nm, fc_fpin_li_event_types, 9370 FC_FPIN_LI_EVT_TYPES_INIT); 9371 9372 DECLARE_ENUM2STR_LOOKUP(lpfc_get_fpin_deli_event_nm, fc_fpin_deli_event_types, 9373 FC_FPIN_DELI_EVT_TYPES_INIT); 9374 9375 DECLARE_ENUM2STR_LOOKUP(lpfc_get_fpin_congn_event_nm, fc_fpin_congn_event_types, 9376 FC_FPIN_CONGN_EVT_TYPES_INIT); 9377 9378 DECLARE_ENUM2STR_LOOKUP(lpfc_get_fpin_congn_severity_nm, 9379 fc_fpin_congn_severity_types, 9380 FC_FPIN_CONGN_SEVERITY_INIT); 9381 9382 9383 /** 9384 * lpfc_display_fpin_wwpn - Display WWPNs accessible by the attached port 9385 * @phba: Pointer to phba object. 9386 * @wwnlist: Pointer to list of WWPNs in FPIN payload 9387 * @cnt: count of WWPNs in FPIN payload 9388 * 9389 * This routine is called by LI and PC descriptors. 9390 * Limit the number of WWPNs displayed to 6 log messages, 6 per log message 9391 */ 9392 static void 9393 lpfc_display_fpin_wwpn(struct lpfc_hba *phba, __be64 *wwnlist, u32 cnt) 9394 { 9395 char buf[LPFC_FPIN_WWPN_LINE_SZ]; 9396 __be64 wwn; 9397 u64 wwpn; 9398 int i, len; 9399 int line = 0; 9400 int wcnt = 0; 9401 bool endit = false; 9402 9403 len = scnprintf(buf, LPFC_FPIN_WWPN_LINE_SZ, "Accessible WWPNs:"); 9404 for (i = 0; i < cnt; i++) { 9405 /* Are we on the last WWPN */ 9406 if (i == (cnt - 1)) 9407 endit = true; 9408 9409 /* Extract the next WWPN from the payload */ 9410 wwn = *wwnlist++; 9411 wwpn = be64_to_cpu(wwn); 9412 len += scnprintf(buf + len, LPFC_FPIN_WWPN_LINE_SZ - len, 9413 " %016llx", wwpn); 9414 9415 /* Log a message if we are on the last WWPN 9416 * or if we hit the max allowed per message. 9417 */ 9418 wcnt++; 9419 if (wcnt == LPFC_FPIN_WWPN_LINE_CNT || endit) { 9420 buf[len] = 0; 9421 lpfc_printf_log(phba, KERN_INFO, LOG_ELS, 9422 "4686 %s\n", buf); 9423 9424 /* Check if we reached the last WWPN */ 9425 if (endit) 9426 return; 9427 9428 /* Limit the number of log message displayed per FPIN */ 9429 line++; 9430 if (line == LPFC_FPIN_WWPN_NUM_LINE) { 9431 lpfc_printf_log(phba, KERN_INFO, LOG_ELS, 9432 "4687 %d WWPNs Truncated\n", 9433 cnt - i - 1); 9434 return; 9435 } 9436 9437 /* Start over with next log message */ 9438 wcnt = 0; 9439 len = scnprintf(buf, LPFC_FPIN_WWPN_LINE_SZ, 9440 "Additional WWPNs:"); 9441 } 9442 } 9443 } 9444 9445 /** 9446 * lpfc_els_rcv_fpin_li - Process an FPIN Link Integrity Event. 9447 * @phba: Pointer to phba object. 9448 * @tlv: Pointer to the Link Integrity Notification Descriptor. 9449 * 9450 * This function processes a Link Integrity FPIN event by logging a message. 9451 **/ 9452 static void 9453 lpfc_els_rcv_fpin_li(struct lpfc_hba *phba, struct fc_tlv_desc *tlv) 9454 { 9455 struct fc_fn_li_desc *li = (struct fc_fn_li_desc *)tlv; 9456 const char *li_evt_str; 9457 u32 li_evt, cnt; 9458 9459 li_evt = be16_to_cpu(li->event_type); 9460 li_evt_str = lpfc_get_fpin_li_event_nm(li_evt); 9461 cnt = be32_to_cpu(li->pname_count); 9462 9463 lpfc_printf_log(phba, KERN_INFO, LOG_ELS, 9464 "4680 FPIN Link Integrity %s (x%x) " 9465 "Detecting PN x%016llx Attached PN x%016llx " 9466 "Duration %d mSecs Count %d Port Cnt %d\n", 9467 li_evt_str, li_evt, 9468 be64_to_cpu(li->detecting_wwpn), 9469 be64_to_cpu(li->attached_wwpn), 9470 be32_to_cpu(li->event_threshold), 9471 be32_to_cpu(li->event_count), cnt); 9472 9473 lpfc_display_fpin_wwpn(phba, (__be64 *)&li->pname_list, cnt); 9474 } 9475 9476 /** 9477 * lpfc_els_rcv_fpin_del - Process an FPIN Delivery Event. 9478 * @phba: Pointer to hba object. 9479 * @tlv: Pointer to the Delivery Notification Descriptor TLV 9480 * 9481 * This function processes a Delivery FPIN event by logging a message. 9482 **/ 9483 static void 9484 lpfc_els_rcv_fpin_del(struct lpfc_hba *phba, struct fc_tlv_desc *tlv) 9485 { 9486 struct fc_fn_deli_desc *del = (struct fc_fn_deli_desc *)tlv; 9487 const char *del_rsn_str; 9488 u32 del_rsn; 9489 __be32 *frame; 9490 9491 del_rsn = be16_to_cpu(del->deli_reason_code); 9492 del_rsn_str = lpfc_get_fpin_deli_event_nm(del_rsn); 9493 9494 /* Skip over desc_tag/desc_len header to payload */ 9495 frame = (__be32 *)(del + 1); 9496 9497 lpfc_printf_log(phba, KERN_INFO, LOG_ELS, 9498 "4681 FPIN Delivery %s (x%x) " 9499 "Detecting PN x%016llx Attached PN x%016llx " 9500 "DiscHdr0 x%08x " 9501 "DiscHdr1 x%08x DiscHdr2 x%08x DiscHdr3 x%08x " 9502 "DiscHdr4 x%08x DiscHdr5 x%08x\n", 9503 del_rsn_str, del_rsn, 9504 be64_to_cpu(del->detecting_wwpn), 9505 be64_to_cpu(del->attached_wwpn), 9506 be32_to_cpu(frame[0]), 9507 be32_to_cpu(frame[1]), 9508 be32_to_cpu(frame[2]), 9509 be32_to_cpu(frame[3]), 9510 be32_to_cpu(frame[4]), 9511 be32_to_cpu(frame[5])); 9512 } 9513 9514 /** 9515 * lpfc_els_rcv_fpin_peer_cgn - Process a FPIN Peer Congestion Event. 9516 * @phba: Pointer to hba object. 9517 * @tlv: Pointer to the Peer Congestion Notification Descriptor TLV 9518 * 9519 * This function processes a Peer Congestion FPIN event by logging a message. 9520 **/ 9521 static void 9522 lpfc_els_rcv_fpin_peer_cgn(struct lpfc_hba *phba, struct fc_tlv_desc *tlv) 9523 { 9524 struct fc_fn_peer_congn_desc *pc = (struct fc_fn_peer_congn_desc *)tlv; 9525 const char *pc_evt_str; 9526 u32 pc_evt, cnt; 9527 9528 pc_evt = be16_to_cpu(pc->event_type); 9529 pc_evt_str = lpfc_get_fpin_congn_event_nm(pc_evt); 9530 cnt = be32_to_cpu(pc->pname_count); 9531 9532 lpfc_printf_log(phba, KERN_INFO, LOG_CGN_MGMT | LOG_ELS, 9533 "4684 FPIN Peer Congestion %s (x%x) " 9534 "Duration %d mSecs " 9535 "Detecting PN x%016llx Attached PN x%016llx " 9536 "Impacted Port Cnt %d\n", 9537 pc_evt_str, pc_evt, 9538 be32_to_cpu(pc->event_period), 9539 be64_to_cpu(pc->detecting_wwpn), 9540 be64_to_cpu(pc->attached_wwpn), 9541 cnt); 9542 9543 lpfc_display_fpin_wwpn(phba, (__be64 *)&pc->pname_list, cnt); 9544 } 9545 9546 /** 9547 * lpfc_els_rcv_fpin_cgn - Process an FPIN Congestion notification 9548 * @phba: Pointer to hba object. 9549 * @tlv: Pointer to the Congestion Notification Descriptor TLV 9550 * 9551 * This function processes an FPIN Congestion Notifiction. The notification 9552 * could be an Alarm or Warning. This routine feeds that data into driver's 9553 * running congestion algorithm. It also processes the FPIN by 9554 * logging a message. It returns 1 to indicate deliver this message 9555 * to the upper layer or 0 to indicate don't deliver it. 9556 **/ 9557 static int 9558 lpfc_els_rcv_fpin_cgn(struct lpfc_hba *phba, struct fc_tlv_desc *tlv) 9559 { 9560 struct lpfc_cgn_info *cp; 9561 struct fc_fn_congn_desc *cgn = (struct fc_fn_congn_desc *)tlv; 9562 const char *cgn_evt_str; 9563 u32 cgn_evt; 9564 const char *cgn_sev_str; 9565 u32 cgn_sev; 9566 uint16_t value; 9567 u32 crc; 9568 bool nm_log = false; 9569 int rc = 1; 9570 9571 cgn_evt = be16_to_cpu(cgn->event_type); 9572 cgn_evt_str = lpfc_get_fpin_congn_event_nm(cgn_evt); 9573 cgn_sev = cgn->severity; 9574 cgn_sev_str = lpfc_get_fpin_congn_severity_nm(cgn_sev); 9575 9576 /* The driver only takes action on a Credit Stall or Oversubscription 9577 * event type to engage the IO algorithm. The driver prints an 9578 * unmaskable message only for Lost Credit and Credit Stall. 9579 * TODO: Still need to have definition of host action on clear, 9580 * lost credit and device specific event types. 9581 */ 9582 switch (cgn_evt) { 9583 case FPIN_CONGN_LOST_CREDIT: 9584 nm_log = true; 9585 break; 9586 case FPIN_CONGN_CREDIT_STALL: 9587 nm_log = true; 9588 fallthrough; 9589 case FPIN_CONGN_OVERSUBSCRIPTION: 9590 if (cgn_evt == FPIN_CONGN_OVERSUBSCRIPTION) 9591 nm_log = false; 9592 switch (cgn_sev) { 9593 case FPIN_CONGN_SEVERITY_ERROR: 9594 /* Take action here for an Alarm event */ 9595 if (phba->cmf_active_mode != LPFC_CFG_OFF) { 9596 if (phba->cgn_reg_fpin & LPFC_CGN_FPIN_ALARM) { 9597 /* Track of alarm cnt for cgn_info */ 9598 atomic_inc(&phba->cgn_fabric_alarm_cnt); 9599 /* Track of alarm cnt for SYNC_WQE */ 9600 atomic_inc(&phba->cgn_sync_alarm_cnt); 9601 } 9602 goto cleanup; 9603 } 9604 break; 9605 case FPIN_CONGN_SEVERITY_WARNING: 9606 /* Take action here for a Warning event */ 9607 if (phba->cmf_active_mode != LPFC_CFG_OFF) { 9608 if (phba->cgn_reg_fpin & LPFC_CGN_FPIN_WARN) { 9609 /* Track of warning cnt for cgn_info */ 9610 atomic_inc(&phba->cgn_fabric_warn_cnt); 9611 /* Track of warning cnt for SYNC_WQE */ 9612 atomic_inc(&phba->cgn_sync_warn_cnt); 9613 } 9614 cleanup: 9615 /* Save frequency in ms */ 9616 phba->cgn_fpin_frequency = 9617 be32_to_cpu(cgn->event_period); 9618 value = phba->cgn_fpin_frequency; 9619 if (phba->cgn_i) { 9620 cp = (struct lpfc_cgn_info *) 9621 phba->cgn_i->virt; 9622 if (phba->cgn_reg_fpin & 9623 LPFC_CGN_FPIN_ALARM) 9624 cp->cgn_alarm_freq = 9625 cpu_to_le16(value); 9626 if (phba->cgn_reg_fpin & 9627 LPFC_CGN_FPIN_WARN) 9628 cp->cgn_warn_freq = 9629 cpu_to_le16(value); 9630 crc = lpfc_cgn_calc_crc32 9631 (cp, 9632 LPFC_CGN_INFO_SZ, 9633 LPFC_CGN_CRC32_SEED); 9634 cp->cgn_info_crc = cpu_to_le32(crc); 9635 } 9636 9637 /* Don't deliver to upper layer since 9638 * driver took action on this tlv. 9639 */ 9640 rc = 0; 9641 } 9642 break; 9643 } 9644 break; 9645 } 9646 9647 /* Change the log level to unmaskable for the following event types. */ 9648 lpfc_printf_log(phba, (nm_log ? KERN_WARNING : KERN_INFO), 9649 LOG_CGN_MGMT | LOG_ELS, 9650 "4683 FPIN CONGESTION %s type %s (x%x) Event " 9651 "Duration %d mSecs\n", 9652 cgn_sev_str, cgn_evt_str, cgn_evt, 9653 be32_to_cpu(cgn->event_period)); 9654 return rc; 9655 } 9656 9657 void 9658 lpfc_els_rcv_fpin(struct lpfc_vport *vport, void *p, u32 fpin_length) 9659 { 9660 struct lpfc_hba *phba = vport->phba; 9661 struct fc_els_fpin *fpin = (struct fc_els_fpin *)p; 9662 struct fc_tlv_desc *tlv, *first_tlv, *current_tlv; 9663 const char *dtag_nm; 9664 int desc_cnt = 0, bytes_remain, cnt; 9665 u32 dtag, deliver = 0; 9666 int len; 9667 9668 /* FPINs handled only if we are in the right discovery state */ 9669 if (vport->port_state < LPFC_DISC_AUTH) 9670 return; 9671 9672 /* make sure there is the full fpin header */ 9673 if (fpin_length < sizeof(struct fc_els_fpin)) 9674 return; 9675 9676 /* Sanity check descriptor length. The desc_len value does not 9677 * include space for the ELS command and the desc_len fields. 9678 */ 9679 len = be32_to_cpu(fpin->desc_len); 9680 if (fpin_length < len + sizeof(struct fc_els_fpin)) { 9681 lpfc_printf_log(phba, KERN_WARNING, LOG_CGN_MGMT, 9682 "4671 Bad ELS FPIN length %d: %d\n", 9683 len, fpin_length); 9684 return; 9685 } 9686 9687 tlv = (struct fc_tlv_desc *)&fpin->fpin_desc[0]; 9688 first_tlv = tlv; 9689 bytes_remain = fpin_length - offsetof(struct fc_els_fpin, fpin_desc); 9690 bytes_remain = min_t(u32, bytes_remain, be32_to_cpu(fpin->desc_len)); 9691 9692 /* process each descriptor separately */ 9693 while (bytes_remain >= FC_TLV_DESC_HDR_SZ && 9694 bytes_remain >= FC_TLV_DESC_SZ_FROM_LENGTH(tlv)) { 9695 dtag = be32_to_cpu(tlv->desc_tag); 9696 switch (dtag) { 9697 case ELS_DTAG_LNK_INTEGRITY: 9698 lpfc_els_rcv_fpin_li(phba, tlv); 9699 deliver = 1; 9700 break; 9701 case ELS_DTAG_DELIVERY: 9702 lpfc_els_rcv_fpin_del(phba, tlv); 9703 deliver = 1; 9704 break; 9705 case ELS_DTAG_PEER_CONGEST: 9706 lpfc_els_rcv_fpin_peer_cgn(phba, tlv); 9707 deliver = 1; 9708 break; 9709 case ELS_DTAG_CONGESTION: 9710 deliver = lpfc_els_rcv_fpin_cgn(phba, tlv); 9711 break; 9712 default: 9713 dtag_nm = lpfc_get_tlv_dtag_nm(dtag); 9714 lpfc_printf_log(phba, KERN_WARNING, LOG_CGN_MGMT, 9715 "4678 unknown FPIN descriptor[%d]: " 9716 "tag x%x (%s)\n", 9717 desc_cnt, dtag, dtag_nm); 9718 9719 /* If descriptor is bad, drop the rest of the data */ 9720 return; 9721 } 9722 lpfc_cgn_update_stat(phba, dtag); 9723 cnt = be32_to_cpu(tlv->desc_len); 9724 9725 /* Sanity check descriptor length. The desc_len value does not 9726 * include space for the desc_tag and the desc_len fields. 9727 */ 9728 len -= (cnt + sizeof(struct fc_tlv_desc)); 9729 if (len < 0) { 9730 dtag_nm = lpfc_get_tlv_dtag_nm(dtag); 9731 lpfc_printf_log(phba, KERN_WARNING, LOG_CGN_MGMT, 9732 "4672 Bad FPIN descriptor TLV length " 9733 "%d: %d %d %s\n", 9734 cnt, len, fpin_length, dtag_nm); 9735 return; 9736 } 9737 9738 current_tlv = tlv; 9739 bytes_remain -= FC_TLV_DESC_SZ_FROM_LENGTH(tlv); 9740 tlv = fc_tlv_next_desc(tlv); 9741 9742 /* Format payload such that the FPIN delivered to the 9743 * upper layer is a single descriptor FPIN. 9744 */ 9745 if (desc_cnt) 9746 memcpy(first_tlv, current_tlv, 9747 (cnt + sizeof(struct fc_els_fpin))); 9748 9749 /* Adjust the length so that it only reflects a 9750 * single descriptor FPIN. 9751 */ 9752 fpin_length = cnt + sizeof(struct fc_els_fpin); 9753 fpin->desc_len = cpu_to_be32(fpin_length); 9754 fpin_length += sizeof(struct fc_els_fpin); /* the entire FPIN */ 9755 9756 /* Send every descriptor individually to the upper layer */ 9757 if (deliver) 9758 fc_host_fpin_rcv(lpfc_shost_from_vport(vport), 9759 fpin_length, (char *)fpin); 9760 desc_cnt++; 9761 } 9762 } 9763 9764 /** 9765 * lpfc_els_unsol_buffer - Process an unsolicited event data buffer 9766 * @phba: pointer to lpfc hba data structure. 9767 * @pring: pointer to a SLI ring. 9768 * @vport: pointer to a host virtual N_Port data structure. 9769 * @elsiocb: pointer to lpfc els command iocb data structure. 9770 * 9771 * This routine is used for processing the IOCB associated with a unsolicited 9772 * event. It first determines whether there is an existing ndlp that matches 9773 * the DID from the unsolicited IOCB. If not, it will create a new one with 9774 * the DID from the unsolicited IOCB. The ELS command from the unsolicited 9775 * IOCB is then used to invoke the proper routine and to set up proper state 9776 * of the discovery state machine. 9777 **/ 9778 static void 9779 lpfc_els_unsol_buffer(struct lpfc_hba *phba, struct lpfc_sli_ring *pring, 9780 struct lpfc_vport *vport, struct lpfc_iocbq *elsiocb) 9781 { 9782 struct lpfc_nodelist *ndlp; 9783 struct ls_rjt stat; 9784 uint32_t *payload, payload_len; 9785 uint32_t cmd, did, newnode; 9786 uint8_t rjt_exp, rjt_err = 0, init_link = 0; 9787 IOCB_t *icmd = &elsiocb->iocb; 9788 LPFC_MBOXQ_t *mbox; 9789 9790 if (!vport || !(elsiocb->context2)) 9791 goto dropit; 9792 9793 newnode = 0; 9794 payload = ((struct lpfc_dmabuf *)elsiocb->context2)->virt; 9795 payload_len = elsiocb->iocb.unsli3.rcvsli3.acc_len; 9796 cmd = *payload; 9797 if ((phba->sli3_options & LPFC_SLI3_HBQ_ENABLED) == 0) 9798 lpfc_post_buffer(phba, pring, 1); 9799 9800 did = icmd->un.rcvels.remoteID; 9801 if (icmd->ulpStatus) { 9802 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL, 9803 "RCV Unsol ELS: status:x%x/x%x did:x%x", 9804 icmd->ulpStatus, icmd->un.ulpWord[4], did); 9805 goto dropit; 9806 } 9807 9808 /* Check to see if link went down during discovery */ 9809 if (lpfc_els_chk_latt(vport)) 9810 goto dropit; 9811 9812 /* Ignore traffic received during vport shutdown. */ 9813 if (vport->load_flag & FC_UNLOADING) 9814 goto dropit; 9815 9816 /* If NPort discovery is delayed drop incoming ELS */ 9817 if ((vport->fc_flag & FC_DISC_DELAYED) && 9818 (cmd != ELS_CMD_PLOGI)) 9819 goto dropit; 9820 9821 ndlp = lpfc_findnode_did(vport, did); 9822 if (!ndlp) { 9823 /* Cannot find existing Fabric ndlp, so allocate a new one */ 9824 ndlp = lpfc_nlp_init(vport, did); 9825 if (!ndlp) 9826 goto dropit; 9827 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE); 9828 newnode = 1; 9829 if ((did & Fabric_DID_MASK) == Fabric_DID_MASK) 9830 ndlp->nlp_type |= NLP_FABRIC; 9831 } else if (ndlp->nlp_state == NLP_STE_UNUSED_NODE) { 9832 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE); 9833 newnode = 1; 9834 } 9835 9836 phba->fc_stat.elsRcvFrame++; 9837 9838 /* 9839 * Do not process any unsolicited ELS commands 9840 * if the ndlp is in DEV_LOSS 9841 */ 9842 spin_lock_irq(&ndlp->lock); 9843 if (ndlp->nlp_flag & NLP_IN_DEV_LOSS) { 9844 spin_unlock_irq(&ndlp->lock); 9845 if (newnode) 9846 lpfc_nlp_put(ndlp); 9847 goto dropit; 9848 } 9849 spin_unlock_irq(&ndlp->lock); 9850 9851 elsiocb->context1 = lpfc_nlp_get(ndlp); 9852 if (!elsiocb->context1) 9853 goto dropit; 9854 elsiocb->vport = vport; 9855 9856 if ((cmd & ELS_CMD_MASK) == ELS_CMD_RSCN) { 9857 cmd &= ELS_CMD_MASK; 9858 } 9859 /* ELS command <elsCmd> received from NPORT <did> */ 9860 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, 9861 "0112 ELS command x%x received from NPORT x%x " 9862 "refcnt %d Data: x%x x%x x%x x%x\n", 9863 cmd, did, kref_read(&ndlp->kref), vport->port_state, 9864 vport->fc_flag, vport->fc_myDID, vport->fc_prevDID); 9865 9866 /* reject till our FLOGI completes or PLOGI assigned DID via PT2PT */ 9867 if ((vport->port_state < LPFC_FABRIC_CFG_LINK) && 9868 (cmd != ELS_CMD_FLOGI) && 9869 !((cmd == ELS_CMD_PLOGI) && (vport->fc_flag & FC_PT2PT))) { 9870 rjt_err = LSRJT_LOGICAL_BSY; 9871 rjt_exp = LSEXP_NOTHING_MORE; 9872 goto lsrjt; 9873 } 9874 9875 switch (cmd) { 9876 case ELS_CMD_PLOGI: 9877 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL, 9878 "RCV PLOGI: did:x%x/ste:x%x flg:x%x", 9879 did, vport->port_state, ndlp->nlp_flag); 9880 9881 phba->fc_stat.elsRcvPLOGI++; 9882 ndlp = lpfc_plogi_confirm_nport(phba, payload, ndlp); 9883 if (phba->sli_rev == LPFC_SLI_REV4 && 9884 (phba->pport->fc_flag & FC_PT2PT)) { 9885 vport->fc_prevDID = vport->fc_myDID; 9886 /* Our DID needs to be updated before registering 9887 * the vfi. This is done in lpfc_rcv_plogi but 9888 * that is called after the reg_vfi. 9889 */ 9890 vport->fc_myDID = elsiocb->iocb.un.rcvels.parmRo; 9891 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, 9892 "3312 Remote port assigned DID x%x " 9893 "%x\n", vport->fc_myDID, 9894 vport->fc_prevDID); 9895 } 9896 9897 lpfc_send_els_event(vport, ndlp, payload); 9898 9899 /* If Nport discovery is delayed, reject PLOGIs */ 9900 if (vport->fc_flag & FC_DISC_DELAYED) { 9901 rjt_err = LSRJT_UNABLE_TPC; 9902 rjt_exp = LSEXP_NOTHING_MORE; 9903 break; 9904 } 9905 9906 if (vport->port_state < LPFC_DISC_AUTH) { 9907 if (!(phba->pport->fc_flag & FC_PT2PT) || 9908 (phba->pport->fc_flag & FC_PT2PT_PLOGI)) { 9909 rjt_err = LSRJT_UNABLE_TPC; 9910 rjt_exp = LSEXP_NOTHING_MORE; 9911 break; 9912 } 9913 } 9914 9915 spin_lock_irq(&ndlp->lock); 9916 ndlp->nlp_flag &= ~NLP_TARGET_REMOVE; 9917 spin_unlock_irq(&ndlp->lock); 9918 9919 lpfc_disc_state_machine(vport, ndlp, elsiocb, 9920 NLP_EVT_RCV_PLOGI); 9921 9922 break; 9923 case ELS_CMD_FLOGI: 9924 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL, 9925 "RCV FLOGI: did:x%x/ste:x%x flg:x%x", 9926 did, vport->port_state, ndlp->nlp_flag); 9927 9928 phba->fc_stat.elsRcvFLOGI++; 9929 9930 /* If the driver believes fabric discovery is done and is ready, 9931 * bounce the link. There is some descrepancy. 9932 */ 9933 if (vport->port_state >= LPFC_LOCAL_CFG_LINK && 9934 vport->fc_flag & FC_PT2PT && 9935 vport->rcv_flogi_cnt >= 1) { 9936 rjt_err = LSRJT_LOGICAL_BSY; 9937 rjt_exp = LSEXP_NOTHING_MORE; 9938 init_link++; 9939 goto lsrjt; 9940 } 9941 9942 lpfc_els_rcv_flogi(vport, elsiocb, ndlp); 9943 if (newnode) 9944 lpfc_disc_state_machine(vport, ndlp, NULL, 9945 NLP_EVT_DEVICE_RM); 9946 break; 9947 case ELS_CMD_LOGO: 9948 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL, 9949 "RCV LOGO: did:x%x/ste:x%x flg:x%x", 9950 did, vport->port_state, ndlp->nlp_flag); 9951 9952 phba->fc_stat.elsRcvLOGO++; 9953 lpfc_send_els_event(vport, ndlp, payload); 9954 if (vport->port_state < LPFC_DISC_AUTH) { 9955 rjt_err = LSRJT_UNABLE_TPC; 9956 rjt_exp = LSEXP_NOTHING_MORE; 9957 break; 9958 } 9959 lpfc_disc_state_machine(vport, ndlp, elsiocb, NLP_EVT_RCV_LOGO); 9960 if (newnode) 9961 lpfc_disc_state_machine(vport, ndlp, NULL, 9962 NLP_EVT_DEVICE_RM); 9963 break; 9964 case ELS_CMD_PRLO: 9965 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL, 9966 "RCV PRLO: did:x%x/ste:x%x flg:x%x", 9967 did, vport->port_state, ndlp->nlp_flag); 9968 9969 phba->fc_stat.elsRcvPRLO++; 9970 lpfc_send_els_event(vport, ndlp, payload); 9971 if (vport->port_state < LPFC_DISC_AUTH) { 9972 rjt_err = LSRJT_UNABLE_TPC; 9973 rjt_exp = LSEXP_NOTHING_MORE; 9974 break; 9975 } 9976 lpfc_disc_state_machine(vport, ndlp, elsiocb, NLP_EVT_RCV_PRLO); 9977 break; 9978 case ELS_CMD_LCB: 9979 phba->fc_stat.elsRcvLCB++; 9980 lpfc_els_rcv_lcb(vport, elsiocb, ndlp); 9981 break; 9982 case ELS_CMD_RDP: 9983 phba->fc_stat.elsRcvRDP++; 9984 lpfc_els_rcv_rdp(vport, elsiocb, ndlp); 9985 break; 9986 case ELS_CMD_RSCN: 9987 phba->fc_stat.elsRcvRSCN++; 9988 lpfc_els_rcv_rscn(vport, elsiocb, ndlp); 9989 if (newnode) 9990 lpfc_disc_state_machine(vport, ndlp, NULL, 9991 NLP_EVT_DEVICE_RM); 9992 break; 9993 case ELS_CMD_ADISC: 9994 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL, 9995 "RCV ADISC: did:x%x/ste:x%x flg:x%x", 9996 did, vport->port_state, ndlp->nlp_flag); 9997 9998 lpfc_send_els_event(vport, ndlp, payload); 9999 phba->fc_stat.elsRcvADISC++; 10000 if (vport->port_state < LPFC_DISC_AUTH) { 10001 rjt_err = LSRJT_UNABLE_TPC; 10002 rjt_exp = LSEXP_NOTHING_MORE; 10003 break; 10004 } 10005 lpfc_disc_state_machine(vport, ndlp, elsiocb, 10006 NLP_EVT_RCV_ADISC); 10007 break; 10008 case ELS_CMD_PDISC: 10009 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL, 10010 "RCV PDISC: did:x%x/ste:x%x flg:x%x", 10011 did, vport->port_state, ndlp->nlp_flag); 10012 10013 phba->fc_stat.elsRcvPDISC++; 10014 if (vport->port_state < LPFC_DISC_AUTH) { 10015 rjt_err = LSRJT_UNABLE_TPC; 10016 rjt_exp = LSEXP_NOTHING_MORE; 10017 break; 10018 } 10019 lpfc_disc_state_machine(vport, ndlp, elsiocb, 10020 NLP_EVT_RCV_PDISC); 10021 break; 10022 case ELS_CMD_FARPR: 10023 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL, 10024 "RCV FARPR: did:x%x/ste:x%x flg:x%x", 10025 did, vport->port_state, ndlp->nlp_flag); 10026 10027 phba->fc_stat.elsRcvFARPR++; 10028 lpfc_els_rcv_farpr(vport, elsiocb, ndlp); 10029 break; 10030 case ELS_CMD_FARP: 10031 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL, 10032 "RCV FARP: did:x%x/ste:x%x flg:x%x", 10033 did, vport->port_state, ndlp->nlp_flag); 10034 10035 phba->fc_stat.elsRcvFARP++; 10036 lpfc_els_rcv_farp(vport, elsiocb, ndlp); 10037 break; 10038 case ELS_CMD_FAN: 10039 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL, 10040 "RCV FAN: did:x%x/ste:x%x flg:x%x", 10041 did, vport->port_state, ndlp->nlp_flag); 10042 10043 phba->fc_stat.elsRcvFAN++; 10044 lpfc_els_rcv_fan(vport, elsiocb, ndlp); 10045 break; 10046 case ELS_CMD_PRLI: 10047 case ELS_CMD_NVMEPRLI: 10048 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL, 10049 "RCV PRLI: did:x%x/ste:x%x flg:x%x", 10050 did, vport->port_state, ndlp->nlp_flag); 10051 10052 phba->fc_stat.elsRcvPRLI++; 10053 if ((vport->port_state < LPFC_DISC_AUTH) && 10054 (vport->fc_flag & FC_FABRIC)) { 10055 rjt_err = LSRJT_UNABLE_TPC; 10056 rjt_exp = LSEXP_NOTHING_MORE; 10057 break; 10058 } 10059 lpfc_disc_state_machine(vport, ndlp, elsiocb, NLP_EVT_RCV_PRLI); 10060 break; 10061 case ELS_CMD_LIRR: 10062 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL, 10063 "RCV LIRR: did:x%x/ste:x%x flg:x%x", 10064 did, vport->port_state, ndlp->nlp_flag); 10065 10066 phba->fc_stat.elsRcvLIRR++; 10067 lpfc_els_rcv_lirr(vport, elsiocb, ndlp); 10068 if (newnode) 10069 lpfc_disc_state_machine(vport, ndlp, NULL, 10070 NLP_EVT_DEVICE_RM); 10071 break; 10072 case ELS_CMD_RLS: 10073 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL, 10074 "RCV RLS: did:x%x/ste:x%x flg:x%x", 10075 did, vport->port_state, ndlp->nlp_flag); 10076 10077 phba->fc_stat.elsRcvRLS++; 10078 lpfc_els_rcv_rls(vport, elsiocb, ndlp); 10079 if (newnode) 10080 lpfc_disc_state_machine(vport, ndlp, NULL, 10081 NLP_EVT_DEVICE_RM); 10082 break; 10083 case ELS_CMD_RPL: 10084 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL, 10085 "RCV RPL: did:x%x/ste:x%x flg:x%x", 10086 did, vport->port_state, ndlp->nlp_flag); 10087 10088 phba->fc_stat.elsRcvRPL++; 10089 lpfc_els_rcv_rpl(vport, elsiocb, ndlp); 10090 if (newnode) 10091 lpfc_disc_state_machine(vport, ndlp, NULL, 10092 NLP_EVT_DEVICE_RM); 10093 break; 10094 case ELS_CMD_RNID: 10095 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL, 10096 "RCV RNID: did:x%x/ste:x%x flg:x%x", 10097 did, vport->port_state, ndlp->nlp_flag); 10098 10099 phba->fc_stat.elsRcvRNID++; 10100 lpfc_els_rcv_rnid(vport, elsiocb, ndlp); 10101 if (newnode) 10102 lpfc_disc_state_machine(vport, ndlp, NULL, 10103 NLP_EVT_DEVICE_RM); 10104 break; 10105 case ELS_CMD_RTV: 10106 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL, 10107 "RCV RTV: did:x%x/ste:x%x flg:x%x", 10108 did, vport->port_state, ndlp->nlp_flag); 10109 phba->fc_stat.elsRcvRTV++; 10110 lpfc_els_rcv_rtv(vport, elsiocb, ndlp); 10111 if (newnode) 10112 lpfc_disc_state_machine(vport, ndlp, NULL, 10113 NLP_EVT_DEVICE_RM); 10114 break; 10115 case ELS_CMD_RRQ: 10116 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL, 10117 "RCV RRQ: did:x%x/ste:x%x flg:x%x", 10118 did, vport->port_state, ndlp->nlp_flag); 10119 10120 phba->fc_stat.elsRcvRRQ++; 10121 lpfc_els_rcv_rrq(vport, elsiocb, ndlp); 10122 if (newnode) 10123 lpfc_disc_state_machine(vport, ndlp, NULL, 10124 NLP_EVT_DEVICE_RM); 10125 break; 10126 case ELS_CMD_ECHO: 10127 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL, 10128 "RCV ECHO: did:x%x/ste:x%x flg:x%x", 10129 did, vport->port_state, ndlp->nlp_flag); 10130 10131 phba->fc_stat.elsRcvECHO++; 10132 lpfc_els_rcv_echo(vport, elsiocb, ndlp); 10133 if (newnode) 10134 lpfc_disc_state_machine(vport, ndlp, NULL, 10135 NLP_EVT_DEVICE_RM); 10136 break; 10137 case ELS_CMD_REC: 10138 /* receive this due to exchange closed */ 10139 rjt_err = LSRJT_UNABLE_TPC; 10140 rjt_exp = LSEXP_INVALID_OX_RX; 10141 break; 10142 case ELS_CMD_FPIN: 10143 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL, 10144 "RCV FPIN: did:x%x/ste:x%x flg:x%x", 10145 did, vport->port_state, ndlp->nlp_flag); 10146 10147 lpfc_els_rcv_fpin(vport, (struct fc_els_fpin *)payload, 10148 payload_len); 10149 10150 /* There are no replies, so no rjt codes */ 10151 break; 10152 case ELS_CMD_EDC: 10153 lpfc_els_rcv_edc(vport, elsiocb, ndlp); 10154 break; 10155 case ELS_CMD_RDF: 10156 phba->fc_stat.elsRcvRDF++; 10157 /* Accept RDF only from fabric controller */ 10158 if (did != Fabric_Cntl_DID) { 10159 lpfc_printf_vlog(vport, KERN_WARNING, LOG_ELS, 10160 "1115 Received RDF from invalid DID " 10161 "x%x\n", did); 10162 rjt_err = LSRJT_PROTOCOL_ERR; 10163 rjt_exp = LSEXP_NOTHING_MORE; 10164 goto lsrjt; 10165 } 10166 10167 lpfc_els_rcv_rdf(vport, elsiocb, ndlp); 10168 break; 10169 default: 10170 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL, 10171 "RCV ELS cmd: cmd:x%x did:x%x/ste:x%x", 10172 cmd, did, vport->port_state); 10173 10174 /* Unsupported ELS command, reject */ 10175 rjt_err = LSRJT_CMD_UNSUPPORTED; 10176 rjt_exp = LSEXP_NOTHING_MORE; 10177 10178 /* Unknown ELS command <elsCmd> received from NPORT <did> */ 10179 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 10180 "0115 Unknown ELS command x%x " 10181 "received from NPORT x%x\n", cmd, did); 10182 if (newnode) 10183 lpfc_disc_state_machine(vport, ndlp, NULL, 10184 NLP_EVT_DEVICE_RM); 10185 break; 10186 } 10187 10188 lsrjt: 10189 /* check if need to LS_RJT received ELS cmd */ 10190 if (rjt_err) { 10191 memset(&stat, 0, sizeof(stat)); 10192 stat.un.b.lsRjtRsnCode = rjt_err; 10193 stat.un.b.lsRjtRsnCodeExp = rjt_exp; 10194 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, elsiocb, ndlp, 10195 NULL); 10196 /* Remove the reference from above for new nodes. */ 10197 if (newnode) 10198 lpfc_disc_state_machine(vport, ndlp, NULL, 10199 NLP_EVT_DEVICE_RM); 10200 } 10201 10202 /* Release the reference on this elsiocb, not the ndlp. */ 10203 lpfc_nlp_put(elsiocb->context1); 10204 elsiocb->context1 = NULL; 10205 10206 /* Special case. Driver received an unsolicited command that 10207 * unsupportable given the driver's current state. Reset the 10208 * link and start over. 10209 */ 10210 if (init_link) { 10211 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 10212 if (!mbox) 10213 return; 10214 lpfc_linkdown(phba); 10215 lpfc_init_link(phba, mbox, 10216 phba->cfg_topology, 10217 phba->cfg_link_speed); 10218 mbox->u.mb.un.varInitLnk.lipsr_AL_PA = 0; 10219 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl; 10220 mbox->vport = vport; 10221 if (lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT) == 10222 MBX_NOT_FINISHED) 10223 mempool_free(mbox, phba->mbox_mem_pool); 10224 } 10225 10226 return; 10227 10228 dropit: 10229 if (vport && !(vport->load_flag & FC_UNLOADING)) 10230 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 10231 "0111 Dropping received ELS cmd " 10232 "Data: x%x x%x x%x\n", 10233 icmd->ulpStatus, icmd->un.ulpWord[4], icmd->ulpTimeout); 10234 phba->fc_stat.elsRcvDrop++; 10235 } 10236 10237 /** 10238 * lpfc_els_unsol_event - Process an unsolicited event from an els sli ring 10239 * @phba: pointer to lpfc hba data structure. 10240 * @pring: pointer to a SLI ring. 10241 * @elsiocb: pointer to lpfc els iocb data structure. 10242 * 10243 * This routine is used to process an unsolicited event received from a SLI 10244 * (Service Level Interface) ring. The actual processing of the data buffer 10245 * associated with the unsolicited event is done by invoking the routine 10246 * lpfc_els_unsol_buffer() after properly set up the iocb buffer from the 10247 * SLI ring on which the unsolicited event was received. 10248 **/ 10249 void 10250 lpfc_els_unsol_event(struct lpfc_hba *phba, struct lpfc_sli_ring *pring, 10251 struct lpfc_iocbq *elsiocb) 10252 { 10253 struct lpfc_vport *vport = phba->pport; 10254 IOCB_t *icmd = &elsiocb->iocb; 10255 dma_addr_t paddr; 10256 struct lpfc_dmabuf *bdeBuf1 = elsiocb->context2; 10257 struct lpfc_dmabuf *bdeBuf2 = elsiocb->context3; 10258 10259 elsiocb->context1 = NULL; 10260 elsiocb->context2 = NULL; 10261 elsiocb->context3 = NULL; 10262 10263 if (icmd->ulpStatus == IOSTAT_NEED_BUFFER) { 10264 lpfc_sli_hbqbuf_add_hbqs(phba, LPFC_ELS_HBQ); 10265 } else if (icmd->ulpStatus == IOSTAT_LOCAL_REJECT && 10266 (icmd->un.ulpWord[4] & IOERR_PARAM_MASK) == 10267 IOERR_RCV_BUFFER_WAITING) { 10268 phba->fc_stat.NoRcvBuf++; 10269 /* Not enough posted buffers; Try posting more buffers */ 10270 if (!(phba->sli3_options & LPFC_SLI3_HBQ_ENABLED)) 10271 lpfc_post_buffer(phba, pring, 0); 10272 return; 10273 } 10274 10275 if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) && 10276 (icmd->ulpCommand == CMD_IOCB_RCV_ELS64_CX || 10277 icmd->ulpCommand == CMD_IOCB_RCV_SEQ64_CX)) { 10278 if (icmd->unsli3.rcvsli3.vpi == 0xffff) 10279 vport = phba->pport; 10280 else 10281 vport = lpfc_find_vport_by_vpid(phba, 10282 icmd->unsli3.rcvsli3.vpi); 10283 } 10284 10285 /* If there are no BDEs associated 10286 * with this IOCB, there is nothing to do. 10287 */ 10288 if (icmd->ulpBdeCount == 0) 10289 return; 10290 10291 /* type of ELS cmd is first 32bit word 10292 * in packet 10293 */ 10294 if (phba->sli3_options & LPFC_SLI3_HBQ_ENABLED) { 10295 elsiocb->context2 = bdeBuf1; 10296 } else { 10297 paddr = getPaddr(icmd->un.cont64[0].addrHigh, 10298 icmd->un.cont64[0].addrLow); 10299 elsiocb->context2 = lpfc_sli_ringpostbuf_get(phba, pring, 10300 paddr); 10301 } 10302 10303 lpfc_els_unsol_buffer(phba, pring, vport, elsiocb); 10304 /* 10305 * The different unsolicited event handlers would tell us 10306 * if they are done with "mp" by setting context2 to NULL. 10307 */ 10308 if (elsiocb->context2) { 10309 lpfc_in_buf_free(phba, (struct lpfc_dmabuf *)elsiocb->context2); 10310 elsiocb->context2 = NULL; 10311 } 10312 10313 /* RCV_ELS64_CX provide for 2 BDEs - process 2nd if included */ 10314 if ((phba->sli3_options & LPFC_SLI3_HBQ_ENABLED) && 10315 icmd->ulpBdeCount == 2) { 10316 elsiocb->context2 = bdeBuf2; 10317 lpfc_els_unsol_buffer(phba, pring, vport, elsiocb); 10318 /* free mp if we are done with it */ 10319 if (elsiocb->context2) { 10320 lpfc_in_buf_free(phba, elsiocb->context2); 10321 elsiocb->context2 = NULL; 10322 } 10323 } 10324 } 10325 10326 static void 10327 lpfc_start_fdmi(struct lpfc_vport *vport) 10328 { 10329 struct lpfc_nodelist *ndlp; 10330 10331 /* If this is the first time, allocate an ndlp and initialize 10332 * it. Otherwise, make sure the node is enabled and then do the 10333 * login. 10334 */ 10335 ndlp = lpfc_findnode_did(vport, FDMI_DID); 10336 if (!ndlp) { 10337 ndlp = lpfc_nlp_init(vport, FDMI_DID); 10338 if (ndlp) { 10339 ndlp->nlp_type |= NLP_FABRIC; 10340 } else { 10341 return; 10342 } 10343 } 10344 10345 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE); 10346 lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0); 10347 } 10348 10349 /** 10350 * lpfc_do_scr_ns_plogi - Issue a plogi to the name server for scr 10351 * @phba: pointer to lpfc hba data structure. 10352 * @vport: pointer to a virtual N_Port data structure. 10353 * 10354 * This routine issues a Port Login (PLOGI) to the Name Server with 10355 * State Change Request (SCR) for a @vport. This routine will create an 10356 * ndlp for the Name Server associated to the @vport if such node does 10357 * not already exist. The PLOGI to Name Server is issued by invoking the 10358 * lpfc_issue_els_plogi() routine. If Fabric-Device Management Interface 10359 * (FDMI) is configured to the @vport, a FDMI node will be created and 10360 * the PLOGI to FDMI is issued by invoking lpfc_issue_els_plogi() routine. 10361 **/ 10362 void 10363 lpfc_do_scr_ns_plogi(struct lpfc_hba *phba, struct lpfc_vport *vport) 10364 { 10365 struct lpfc_nodelist *ndlp; 10366 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 10367 10368 /* 10369 * If lpfc_delay_discovery parameter is set and the clean address 10370 * bit is cleared and fc fabric parameters chenged, delay FC NPort 10371 * discovery. 10372 */ 10373 spin_lock_irq(shost->host_lock); 10374 if (vport->fc_flag & FC_DISC_DELAYED) { 10375 spin_unlock_irq(shost->host_lock); 10376 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 10377 "3334 Delay fc port discovery for %d secs\n", 10378 phba->fc_ratov); 10379 mod_timer(&vport->delayed_disc_tmo, 10380 jiffies + msecs_to_jiffies(1000 * phba->fc_ratov)); 10381 return; 10382 } 10383 spin_unlock_irq(shost->host_lock); 10384 10385 ndlp = lpfc_findnode_did(vport, NameServer_DID); 10386 if (!ndlp) { 10387 ndlp = lpfc_nlp_init(vport, NameServer_DID); 10388 if (!ndlp) { 10389 if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) { 10390 lpfc_disc_start(vport); 10391 return; 10392 } 10393 lpfc_vport_set_state(vport, FC_VPORT_FAILED); 10394 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 10395 "0251 NameServer login: no memory\n"); 10396 return; 10397 } 10398 } 10399 10400 ndlp->nlp_type |= NLP_FABRIC; 10401 10402 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE); 10403 10404 if (lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0)) { 10405 lpfc_vport_set_state(vport, FC_VPORT_FAILED); 10406 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 10407 "0252 Cannot issue NameServer login\n"); 10408 return; 10409 } 10410 10411 if ((phba->cfg_enable_SmartSAN || 10412 (phba->cfg_fdmi_on == LPFC_FDMI_SUPPORT)) && 10413 (vport->load_flag & FC_ALLOW_FDMI)) 10414 lpfc_start_fdmi(vport); 10415 } 10416 10417 /** 10418 * lpfc_cmpl_reg_new_vport - Completion callback function to register new vport 10419 * @phba: pointer to lpfc hba data structure. 10420 * @pmb: pointer to the driver internal queue element for mailbox command. 10421 * 10422 * This routine is the completion callback function to register new vport 10423 * mailbox command. If the new vport mailbox command completes successfully, 10424 * the fabric registration login shall be performed on physical port (the 10425 * new vport created is actually a physical port, with VPI 0) or the port 10426 * login to Name Server for State Change Request (SCR) will be performed 10427 * on virtual port (real virtual port, with VPI greater than 0). 10428 **/ 10429 static void 10430 lpfc_cmpl_reg_new_vport(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 10431 { 10432 struct lpfc_vport *vport = pmb->vport; 10433 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 10434 struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *)pmb->ctx_ndlp; 10435 MAILBOX_t *mb = &pmb->u.mb; 10436 int rc; 10437 10438 spin_lock_irq(shost->host_lock); 10439 vport->fc_flag &= ~FC_VPORT_NEEDS_REG_VPI; 10440 spin_unlock_irq(shost->host_lock); 10441 10442 if (mb->mbxStatus) { 10443 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 10444 "0915 Register VPI failed : Status: x%x" 10445 " upd bit: x%x \n", mb->mbxStatus, 10446 mb->un.varRegVpi.upd); 10447 if (phba->sli_rev == LPFC_SLI_REV4 && 10448 mb->un.varRegVpi.upd) 10449 goto mbox_err_exit ; 10450 10451 switch (mb->mbxStatus) { 10452 case 0x11: /* unsupported feature */ 10453 case 0x9603: /* max_vpi exceeded */ 10454 case 0x9602: /* Link event since CLEAR_LA */ 10455 /* giving up on vport registration */ 10456 lpfc_vport_set_state(vport, FC_VPORT_FAILED); 10457 spin_lock_irq(shost->host_lock); 10458 vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP); 10459 spin_unlock_irq(shost->host_lock); 10460 lpfc_can_disctmo(vport); 10461 break; 10462 /* If reg_vpi fail with invalid VPI status, re-init VPI */ 10463 case 0x20: 10464 spin_lock_irq(shost->host_lock); 10465 vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI; 10466 spin_unlock_irq(shost->host_lock); 10467 lpfc_init_vpi(phba, pmb, vport->vpi); 10468 pmb->vport = vport; 10469 pmb->mbox_cmpl = lpfc_init_vpi_cmpl; 10470 rc = lpfc_sli_issue_mbox(phba, pmb, 10471 MBX_NOWAIT); 10472 if (rc == MBX_NOT_FINISHED) { 10473 lpfc_printf_vlog(vport, KERN_ERR, 10474 LOG_TRACE_EVENT, 10475 "2732 Failed to issue INIT_VPI" 10476 " mailbox command\n"); 10477 } else { 10478 lpfc_nlp_put(ndlp); 10479 return; 10480 } 10481 fallthrough; 10482 default: 10483 /* Try to recover from this error */ 10484 if (phba->sli_rev == LPFC_SLI_REV4) 10485 lpfc_sli4_unreg_all_rpis(vport); 10486 lpfc_mbx_unreg_vpi(vport); 10487 spin_lock_irq(shost->host_lock); 10488 vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI; 10489 spin_unlock_irq(shost->host_lock); 10490 if (mb->mbxStatus == MBX_NOT_FINISHED) 10491 break; 10492 if ((vport->port_type == LPFC_PHYSICAL_PORT) && 10493 !(vport->fc_flag & FC_LOGO_RCVD_DID_CHNG)) { 10494 if (phba->sli_rev == LPFC_SLI_REV4) 10495 lpfc_issue_init_vfi(vport); 10496 else 10497 lpfc_initial_flogi(vport); 10498 } else { 10499 lpfc_initial_fdisc(vport); 10500 } 10501 break; 10502 } 10503 } else { 10504 spin_lock_irq(shost->host_lock); 10505 vport->vpi_state |= LPFC_VPI_REGISTERED; 10506 spin_unlock_irq(shost->host_lock); 10507 if (vport == phba->pport) { 10508 if (phba->sli_rev < LPFC_SLI_REV4) 10509 lpfc_issue_fabric_reglogin(vport); 10510 else { 10511 /* 10512 * If the physical port is instantiated using 10513 * FDISC, do not start vport discovery. 10514 */ 10515 if (vport->port_state != LPFC_FDISC) 10516 lpfc_start_fdiscs(phba); 10517 lpfc_do_scr_ns_plogi(phba, vport); 10518 } 10519 } else { 10520 lpfc_do_scr_ns_plogi(phba, vport); 10521 } 10522 } 10523 mbox_err_exit: 10524 /* Now, we decrement the ndlp reference count held for this 10525 * callback function 10526 */ 10527 lpfc_nlp_put(ndlp); 10528 10529 mempool_free(pmb, phba->mbox_mem_pool); 10530 return; 10531 } 10532 10533 /** 10534 * lpfc_register_new_vport - Register a new vport with a HBA 10535 * @phba: pointer to lpfc hba data structure. 10536 * @vport: pointer to a host virtual N_Port data structure. 10537 * @ndlp: pointer to a node-list data structure. 10538 * 10539 * This routine registers the @vport as a new virtual port with a HBA. 10540 * It is done through a registering vpi mailbox command. 10541 **/ 10542 void 10543 lpfc_register_new_vport(struct lpfc_hba *phba, struct lpfc_vport *vport, 10544 struct lpfc_nodelist *ndlp) 10545 { 10546 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 10547 LPFC_MBOXQ_t *mbox; 10548 10549 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 10550 if (mbox) { 10551 lpfc_reg_vpi(vport, mbox); 10552 mbox->vport = vport; 10553 mbox->ctx_ndlp = lpfc_nlp_get(ndlp); 10554 if (!mbox->ctx_ndlp) { 10555 mempool_free(mbox, phba->mbox_mem_pool); 10556 goto mbox_err_exit; 10557 } 10558 10559 mbox->mbox_cmpl = lpfc_cmpl_reg_new_vport; 10560 if (lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT) 10561 == MBX_NOT_FINISHED) { 10562 /* mailbox command not success, decrement ndlp 10563 * reference count for this command 10564 */ 10565 lpfc_nlp_put(ndlp); 10566 mempool_free(mbox, phba->mbox_mem_pool); 10567 10568 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 10569 "0253 Register VPI: Can't send mbox\n"); 10570 goto mbox_err_exit; 10571 } 10572 } else { 10573 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 10574 "0254 Register VPI: no memory\n"); 10575 goto mbox_err_exit; 10576 } 10577 return; 10578 10579 mbox_err_exit: 10580 lpfc_vport_set_state(vport, FC_VPORT_FAILED); 10581 spin_lock_irq(shost->host_lock); 10582 vport->fc_flag &= ~FC_VPORT_NEEDS_REG_VPI; 10583 spin_unlock_irq(shost->host_lock); 10584 return; 10585 } 10586 10587 /** 10588 * lpfc_cancel_all_vport_retry_delay_timer - Cancel all vport retry delay timer 10589 * @phba: pointer to lpfc hba data structure. 10590 * 10591 * This routine cancels the retry delay timers to all the vports. 10592 **/ 10593 void 10594 lpfc_cancel_all_vport_retry_delay_timer(struct lpfc_hba *phba) 10595 { 10596 struct lpfc_vport **vports; 10597 struct lpfc_nodelist *ndlp; 10598 uint32_t link_state; 10599 int i; 10600 10601 /* Treat this failure as linkdown for all vports */ 10602 link_state = phba->link_state; 10603 lpfc_linkdown(phba); 10604 phba->link_state = link_state; 10605 10606 vports = lpfc_create_vport_work_array(phba); 10607 10608 if (vports) { 10609 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) { 10610 ndlp = lpfc_findnode_did(vports[i], Fabric_DID); 10611 if (ndlp) 10612 lpfc_cancel_retry_delay_tmo(vports[i], ndlp); 10613 lpfc_els_flush_cmd(vports[i]); 10614 } 10615 lpfc_destroy_vport_work_array(phba, vports); 10616 } 10617 } 10618 10619 /** 10620 * lpfc_retry_pport_discovery - Start timer to retry FLOGI. 10621 * @phba: pointer to lpfc hba data structure. 10622 * 10623 * This routine abort all pending discovery commands and 10624 * start a timer to retry FLOGI for the physical port 10625 * discovery. 10626 **/ 10627 void 10628 lpfc_retry_pport_discovery(struct lpfc_hba *phba) 10629 { 10630 struct lpfc_nodelist *ndlp; 10631 10632 /* Cancel the all vports retry delay retry timers */ 10633 lpfc_cancel_all_vport_retry_delay_timer(phba); 10634 10635 /* If fabric require FLOGI, then re-instantiate physical login */ 10636 ndlp = lpfc_findnode_did(phba->pport, Fabric_DID); 10637 if (!ndlp) 10638 return; 10639 10640 mod_timer(&ndlp->nlp_delayfunc, jiffies + msecs_to_jiffies(1000)); 10641 spin_lock_irq(&ndlp->lock); 10642 ndlp->nlp_flag |= NLP_DELAY_TMO; 10643 spin_unlock_irq(&ndlp->lock); 10644 ndlp->nlp_last_elscmd = ELS_CMD_FLOGI; 10645 phba->pport->port_state = LPFC_FLOGI; 10646 return; 10647 } 10648 10649 /** 10650 * lpfc_fabric_login_reqd - Check if FLOGI required. 10651 * @phba: pointer to lpfc hba data structure. 10652 * @cmdiocb: pointer to FDISC command iocb. 10653 * @rspiocb: pointer to FDISC response iocb. 10654 * 10655 * This routine checks if a FLOGI is reguired for FDISC 10656 * to succeed. 10657 **/ 10658 static int 10659 lpfc_fabric_login_reqd(struct lpfc_hba *phba, 10660 struct lpfc_iocbq *cmdiocb, 10661 struct lpfc_iocbq *rspiocb) 10662 { 10663 10664 if ((rspiocb->iocb.ulpStatus != IOSTAT_FABRIC_RJT) || 10665 (rspiocb->iocb.un.ulpWord[4] != RJT_LOGIN_REQUIRED)) 10666 return 0; 10667 else 10668 return 1; 10669 } 10670 10671 /** 10672 * lpfc_cmpl_els_fdisc - Completion function for fdisc iocb command 10673 * @phba: pointer to lpfc hba data structure. 10674 * @cmdiocb: pointer to lpfc command iocb data structure. 10675 * @rspiocb: pointer to lpfc response iocb data structure. 10676 * 10677 * This routine is the completion callback function to a Fabric Discover 10678 * (FDISC) ELS command. Since all the FDISC ELS commands are issued 10679 * single threaded, each FDISC completion callback function will reset 10680 * the discovery timer for all vports such that the timers will not get 10681 * unnecessary timeout. The function checks the FDISC IOCB status. If error 10682 * detected, the vport will be set to FC_VPORT_FAILED state. Otherwise,the 10683 * vport will set to FC_VPORT_ACTIVE state. It then checks whether the DID 10684 * assigned to the vport has been changed with the completion of the FDISC 10685 * command. If so, both RPI (Remote Port Index) and VPI (Virtual Port Index) 10686 * are unregistered from the HBA, and then the lpfc_register_new_vport() 10687 * routine is invoked to register new vport with the HBA. Otherwise, the 10688 * lpfc_do_scr_ns_plogi() routine is invoked to issue a PLOGI to the Name 10689 * Server for State Change Request (SCR). 10690 **/ 10691 static void 10692 lpfc_cmpl_els_fdisc(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb, 10693 struct lpfc_iocbq *rspiocb) 10694 { 10695 struct lpfc_vport *vport = cmdiocb->vport; 10696 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 10697 struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) cmdiocb->context1; 10698 struct lpfc_nodelist *np; 10699 struct lpfc_nodelist *next_np; 10700 IOCB_t *irsp = &rspiocb->iocb; 10701 struct lpfc_iocbq *piocb; 10702 struct lpfc_dmabuf *pcmd = cmdiocb->context2, *prsp; 10703 struct serv_parm *sp; 10704 uint8_t fabric_param_changed; 10705 10706 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, 10707 "0123 FDISC completes. x%x/x%x prevDID: x%x\n", 10708 irsp->ulpStatus, irsp->un.ulpWord[4], 10709 vport->fc_prevDID); 10710 /* Since all FDISCs are being single threaded, we 10711 * must reset the discovery timer for ALL vports 10712 * waiting to send FDISC when one completes. 10713 */ 10714 list_for_each_entry(piocb, &phba->fabric_iocb_list, list) { 10715 lpfc_set_disctmo(piocb->vport); 10716 } 10717 10718 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, 10719 "FDISC cmpl: status:x%x/x%x prevdid:x%x", 10720 irsp->ulpStatus, irsp->un.ulpWord[4], vport->fc_prevDID); 10721 10722 if (irsp->ulpStatus) { 10723 10724 if (lpfc_fabric_login_reqd(phba, cmdiocb, rspiocb)) { 10725 lpfc_retry_pport_discovery(phba); 10726 goto out; 10727 } 10728 10729 /* Check for retry */ 10730 if (lpfc_els_retry(phba, cmdiocb, rspiocb)) 10731 goto out; 10732 /* FDISC failed */ 10733 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 10734 "0126 FDISC failed. (x%x/x%x)\n", 10735 irsp->ulpStatus, irsp->un.ulpWord[4]); 10736 goto fdisc_failed; 10737 } 10738 10739 lpfc_check_nlp_post_devloss(vport, ndlp); 10740 10741 spin_lock_irq(shost->host_lock); 10742 vport->fc_flag &= ~FC_VPORT_CVL_RCVD; 10743 vport->fc_flag &= ~FC_VPORT_LOGO_RCVD; 10744 vport->fc_flag |= FC_FABRIC; 10745 if (vport->phba->fc_topology == LPFC_TOPOLOGY_LOOP) 10746 vport->fc_flag |= FC_PUBLIC_LOOP; 10747 spin_unlock_irq(shost->host_lock); 10748 10749 vport->fc_myDID = irsp->un.ulpWord[4] & Mask_DID; 10750 lpfc_vport_set_state(vport, FC_VPORT_ACTIVE); 10751 prsp = list_get_first(&pcmd->list, struct lpfc_dmabuf, list); 10752 if (!prsp) 10753 goto out; 10754 sp = prsp->virt + sizeof(uint32_t); 10755 fabric_param_changed = lpfc_check_clean_addr_bit(vport, sp); 10756 memcpy(&vport->fabric_portname, &sp->portName, 10757 sizeof(struct lpfc_name)); 10758 memcpy(&vport->fabric_nodename, &sp->nodeName, 10759 sizeof(struct lpfc_name)); 10760 if (fabric_param_changed && 10761 !(vport->fc_flag & FC_VPORT_NEEDS_REG_VPI)) { 10762 /* If our NportID changed, we need to ensure all 10763 * remaining NPORTs get unreg_login'ed so we can 10764 * issue unreg_vpi. 10765 */ 10766 list_for_each_entry_safe(np, next_np, 10767 &vport->fc_nodes, nlp_listp) { 10768 if ((np->nlp_state != NLP_STE_NPR_NODE) || 10769 !(np->nlp_flag & NLP_NPR_ADISC)) 10770 continue; 10771 spin_lock_irq(&ndlp->lock); 10772 np->nlp_flag &= ~NLP_NPR_ADISC; 10773 spin_unlock_irq(&ndlp->lock); 10774 lpfc_unreg_rpi(vport, np); 10775 } 10776 lpfc_cleanup_pending_mbox(vport); 10777 10778 if (phba->sli_rev == LPFC_SLI_REV4) 10779 lpfc_sli4_unreg_all_rpis(vport); 10780 10781 lpfc_mbx_unreg_vpi(vport); 10782 spin_lock_irq(shost->host_lock); 10783 vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI; 10784 if (phba->sli_rev == LPFC_SLI_REV4) 10785 vport->fc_flag |= FC_VPORT_NEEDS_INIT_VPI; 10786 else 10787 vport->fc_flag |= FC_LOGO_RCVD_DID_CHNG; 10788 spin_unlock_irq(shost->host_lock); 10789 } else if ((phba->sli_rev == LPFC_SLI_REV4) && 10790 !(vport->fc_flag & FC_VPORT_NEEDS_REG_VPI)) { 10791 /* 10792 * Driver needs to re-reg VPI in order for f/w 10793 * to update the MAC address. 10794 */ 10795 lpfc_register_new_vport(phba, vport, ndlp); 10796 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE); 10797 goto out; 10798 } 10799 10800 if (vport->fc_flag & FC_VPORT_NEEDS_INIT_VPI) 10801 lpfc_issue_init_vpi(vport); 10802 else if (vport->fc_flag & FC_VPORT_NEEDS_REG_VPI) 10803 lpfc_register_new_vport(phba, vport, ndlp); 10804 else 10805 lpfc_do_scr_ns_plogi(phba, vport); 10806 10807 /* The FDISC completed successfully. Move the fabric ndlp to 10808 * UNMAPPED state and register with the transport. 10809 */ 10810 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE); 10811 goto out; 10812 10813 fdisc_failed: 10814 if (vport->fc_vport && 10815 (vport->fc_vport->vport_state != FC_VPORT_NO_FABRIC_RSCS)) 10816 lpfc_vport_set_state(vport, FC_VPORT_FAILED); 10817 /* Cancel discovery timer */ 10818 lpfc_can_disctmo(vport); 10819 out: 10820 lpfc_els_free_iocb(phba, cmdiocb); 10821 lpfc_nlp_put(ndlp); 10822 } 10823 10824 /** 10825 * lpfc_issue_els_fdisc - Issue a fdisc iocb command 10826 * @vport: pointer to a virtual N_Port data structure. 10827 * @ndlp: pointer to a node-list data structure. 10828 * @retry: number of retries to the command IOCB. 10829 * 10830 * This routine prepares and issues a Fabric Discover (FDISC) IOCB to 10831 * a remote node (@ndlp) off a @vport. It uses the lpfc_issue_fabric_iocb() 10832 * routine to issue the IOCB, which makes sure only one outstanding fabric 10833 * IOCB will be sent off HBA at any given time. 10834 * 10835 * Note that the ndlp reference count will be incremented by 1 for holding the 10836 * ndlp and the reference to ndlp will be stored into the context1 field of 10837 * the IOCB for the completion callback function to the FDISC ELS command. 10838 * 10839 * Return code 10840 * 0 - Successfully issued fdisc iocb command 10841 * 1 - Failed to issue fdisc iocb command 10842 **/ 10843 static int 10844 lpfc_issue_els_fdisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 10845 uint8_t retry) 10846 { 10847 struct lpfc_hba *phba = vport->phba; 10848 IOCB_t *icmd; 10849 struct lpfc_iocbq *elsiocb; 10850 struct serv_parm *sp; 10851 uint8_t *pcmd; 10852 uint16_t cmdsize; 10853 int did = ndlp->nlp_DID; 10854 int rc; 10855 10856 vport->port_state = LPFC_FDISC; 10857 vport->fc_myDID = 0; 10858 cmdsize = (sizeof(uint32_t) + sizeof(struct serv_parm)); 10859 elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp, did, 10860 ELS_CMD_FDISC); 10861 if (!elsiocb) { 10862 lpfc_vport_set_state(vport, FC_VPORT_FAILED); 10863 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 10864 "0255 Issue FDISC: no IOCB\n"); 10865 return 1; 10866 } 10867 10868 icmd = &elsiocb->iocb; 10869 icmd->un.elsreq64.myID = 0; 10870 icmd->un.elsreq64.fl = 1; 10871 10872 /* 10873 * SLI3 ports require a different context type value than SLI4. 10874 * Catch SLI3 ports here and override the prep. 10875 */ 10876 if (phba->sli_rev == LPFC_SLI_REV3) { 10877 icmd->ulpCt_h = 1; 10878 icmd->ulpCt_l = 0; 10879 } 10880 10881 pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt); 10882 *((uint32_t *) (pcmd)) = ELS_CMD_FDISC; 10883 pcmd += sizeof(uint32_t); /* CSP Word 1 */ 10884 memcpy(pcmd, &vport->phba->pport->fc_sparam, sizeof(struct serv_parm)); 10885 sp = (struct serv_parm *) pcmd; 10886 /* Setup CSPs accordingly for Fabric */ 10887 sp->cmn.e_d_tov = 0; 10888 sp->cmn.w2.r_a_tov = 0; 10889 sp->cmn.virtual_fabric_support = 0; 10890 sp->cls1.classValid = 0; 10891 sp->cls2.seqDelivery = 1; 10892 sp->cls3.seqDelivery = 1; 10893 10894 pcmd += sizeof(uint32_t); /* CSP Word 2 */ 10895 pcmd += sizeof(uint32_t); /* CSP Word 3 */ 10896 pcmd += sizeof(uint32_t); /* CSP Word 4 */ 10897 pcmd += sizeof(uint32_t); /* Port Name */ 10898 memcpy(pcmd, &vport->fc_portname, 8); 10899 pcmd += sizeof(uint32_t); /* Node Name */ 10900 pcmd += sizeof(uint32_t); /* Node Name */ 10901 memcpy(pcmd, &vport->fc_nodename, 8); 10902 sp->cmn.valid_vendor_ver_level = 0; 10903 memset(sp->un.vendorVersion, 0, sizeof(sp->un.vendorVersion)); 10904 lpfc_set_disctmo(vport); 10905 10906 phba->fc_stat.elsXmitFDISC++; 10907 elsiocb->iocb_cmpl = lpfc_cmpl_els_fdisc; 10908 10909 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, 10910 "Issue FDISC: did:x%x", 10911 did, 0, 0); 10912 10913 elsiocb->context1 = lpfc_nlp_get(ndlp); 10914 if (!elsiocb->context1) { 10915 lpfc_els_free_iocb(phba, elsiocb); 10916 goto err_out; 10917 } 10918 10919 rc = lpfc_issue_fabric_iocb(phba, elsiocb); 10920 if (rc == IOCB_ERROR) { 10921 lpfc_els_free_iocb(phba, elsiocb); 10922 lpfc_nlp_put(ndlp); 10923 goto err_out; 10924 } 10925 10926 lpfc_vport_set_state(vport, FC_VPORT_INITIALIZING); 10927 return 0; 10928 10929 err_out: 10930 lpfc_vport_set_state(vport, FC_VPORT_FAILED); 10931 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 10932 "0256 Issue FDISC: Cannot send IOCB\n"); 10933 return 1; 10934 } 10935 10936 /** 10937 * lpfc_cmpl_els_npiv_logo - Completion function with vport logo 10938 * @phba: pointer to lpfc hba data structure. 10939 * @cmdiocb: pointer to lpfc command iocb data structure. 10940 * @rspiocb: pointer to lpfc response iocb data structure. 10941 * 10942 * This routine is the completion callback function to the issuing of a LOGO 10943 * ELS command off a vport. It frees the command IOCB and then decrement the 10944 * reference count held on ndlp for this completion function, indicating that 10945 * the reference to the ndlp is no long needed. Note that the 10946 * lpfc_els_free_iocb() routine decrements the ndlp reference held for this 10947 * callback function and an additional explicit ndlp reference decrementation 10948 * will trigger the actual release of the ndlp. 10949 **/ 10950 static void 10951 lpfc_cmpl_els_npiv_logo(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb, 10952 struct lpfc_iocbq *rspiocb) 10953 { 10954 struct lpfc_vport *vport = cmdiocb->vport; 10955 IOCB_t *irsp; 10956 struct lpfc_nodelist *ndlp; 10957 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 10958 10959 ndlp = (struct lpfc_nodelist *)cmdiocb->context1; 10960 irsp = &rspiocb->iocb; 10961 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, 10962 "LOGO npiv cmpl: status:x%x/x%x did:x%x", 10963 irsp->ulpStatus, irsp->un.ulpWord[4], irsp->un.rcvels.remoteID); 10964 10965 /* NPIV LOGO completes to NPort <nlp_DID> */ 10966 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, 10967 "2928 NPIV LOGO completes to NPort x%x " 10968 "Data: x%x x%x x%x x%x x%x x%x x%x\n", 10969 ndlp->nlp_DID, irsp->ulpStatus, irsp->un.ulpWord[4], 10970 irsp->ulpTimeout, vport->num_disc_nodes, 10971 kref_read(&ndlp->kref), ndlp->nlp_flag, 10972 ndlp->fc4_xpt_flags); 10973 10974 if (irsp->ulpStatus == IOSTAT_SUCCESS) { 10975 spin_lock_irq(shost->host_lock); 10976 vport->fc_flag &= ~FC_NDISC_ACTIVE; 10977 vport->fc_flag &= ~FC_FABRIC; 10978 spin_unlock_irq(shost->host_lock); 10979 lpfc_can_disctmo(vport); 10980 } 10981 10982 /* Safe to release resources now. */ 10983 lpfc_els_free_iocb(phba, cmdiocb); 10984 lpfc_nlp_put(ndlp); 10985 vport->unreg_vpi_cmpl = VPORT_ERROR; 10986 } 10987 10988 /** 10989 * lpfc_issue_els_npiv_logo - Issue a logo off a vport 10990 * @vport: pointer to a virtual N_Port data structure. 10991 * @ndlp: pointer to a node-list data structure. 10992 * 10993 * This routine issues a LOGO ELS command to an @ndlp off a @vport. 10994 * 10995 * Note that the ndlp reference count will be incremented by 1 for holding the 10996 * ndlp and the reference to ndlp will be stored into the context1 field of 10997 * the IOCB for the completion callback function to the LOGO ELS command. 10998 * 10999 * Return codes 11000 * 0 - Successfully issued logo off the @vport 11001 * 1 - Failed to issue logo off the @vport 11002 **/ 11003 int 11004 lpfc_issue_els_npiv_logo(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) 11005 { 11006 int rc = 0; 11007 struct lpfc_hba *phba = vport->phba; 11008 struct lpfc_iocbq *elsiocb; 11009 uint8_t *pcmd; 11010 uint16_t cmdsize; 11011 11012 cmdsize = 2 * sizeof(uint32_t) + sizeof(struct lpfc_name); 11013 elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, 0, ndlp, ndlp->nlp_DID, 11014 ELS_CMD_LOGO); 11015 if (!elsiocb) 11016 return 1; 11017 11018 pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt); 11019 *((uint32_t *) (pcmd)) = ELS_CMD_LOGO; 11020 pcmd += sizeof(uint32_t); 11021 11022 /* Fill in LOGO payload */ 11023 *((uint32_t *) (pcmd)) = be32_to_cpu(vport->fc_myDID); 11024 pcmd += sizeof(uint32_t); 11025 memcpy(pcmd, &vport->fc_portname, sizeof(struct lpfc_name)); 11026 11027 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, 11028 "Issue LOGO npiv did:x%x flg:x%x", 11029 ndlp->nlp_DID, ndlp->nlp_flag, 0); 11030 11031 elsiocb->iocb_cmpl = lpfc_cmpl_els_npiv_logo; 11032 spin_lock_irq(&ndlp->lock); 11033 ndlp->nlp_flag |= NLP_LOGO_SND; 11034 spin_unlock_irq(&ndlp->lock); 11035 elsiocb->context1 = lpfc_nlp_get(ndlp); 11036 if (!elsiocb->context1) { 11037 lpfc_els_free_iocb(phba, elsiocb); 11038 goto err; 11039 } 11040 11041 rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0); 11042 if (rc == IOCB_ERROR) { 11043 lpfc_els_free_iocb(phba, elsiocb); 11044 lpfc_nlp_put(ndlp); 11045 goto err; 11046 } 11047 return 0; 11048 11049 err: 11050 spin_lock_irq(&ndlp->lock); 11051 ndlp->nlp_flag &= ~NLP_LOGO_SND; 11052 spin_unlock_irq(&ndlp->lock); 11053 return 1; 11054 } 11055 11056 /** 11057 * lpfc_fabric_block_timeout - Handler function to the fabric block timer 11058 * @t: timer context used to obtain the lpfc hba. 11059 * 11060 * This routine is invoked by the fabric iocb block timer after 11061 * timeout. It posts the fabric iocb block timeout event by setting the 11062 * WORKER_FABRIC_BLOCK_TMO bit to work port event bitmap and then invokes 11063 * lpfc_worker_wake_up() routine to wake up the worker thread. It is for 11064 * the worker thread to invoke the lpfc_unblock_fabric_iocbs() on the 11065 * posted event WORKER_FABRIC_BLOCK_TMO. 11066 **/ 11067 void 11068 lpfc_fabric_block_timeout(struct timer_list *t) 11069 { 11070 struct lpfc_hba *phba = from_timer(phba, t, fabric_block_timer); 11071 unsigned long iflags; 11072 uint32_t tmo_posted; 11073 11074 spin_lock_irqsave(&phba->pport->work_port_lock, iflags); 11075 tmo_posted = phba->pport->work_port_events & WORKER_FABRIC_BLOCK_TMO; 11076 if (!tmo_posted) 11077 phba->pport->work_port_events |= WORKER_FABRIC_BLOCK_TMO; 11078 spin_unlock_irqrestore(&phba->pport->work_port_lock, iflags); 11079 11080 if (!tmo_posted) 11081 lpfc_worker_wake_up(phba); 11082 return; 11083 } 11084 11085 /** 11086 * lpfc_resume_fabric_iocbs - Issue a fabric iocb from driver internal list 11087 * @phba: pointer to lpfc hba data structure. 11088 * 11089 * This routine issues one fabric iocb from the driver internal list to 11090 * the HBA. It first checks whether it's ready to issue one fabric iocb to 11091 * the HBA (whether there is no outstanding fabric iocb). If so, it shall 11092 * remove one pending fabric iocb from the driver internal list and invokes 11093 * lpfc_sli_issue_iocb() routine to send the fabric iocb to the HBA. 11094 **/ 11095 static void 11096 lpfc_resume_fabric_iocbs(struct lpfc_hba *phba) 11097 { 11098 struct lpfc_iocbq *iocb; 11099 unsigned long iflags; 11100 int ret; 11101 IOCB_t *cmd; 11102 11103 repeat: 11104 iocb = NULL; 11105 spin_lock_irqsave(&phba->hbalock, iflags); 11106 /* Post any pending iocb to the SLI layer */ 11107 if (atomic_read(&phba->fabric_iocb_count) == 0) { 11108 list_remove_head(&phba->fabric_iocb_list, iocb, typeof(*iocb), 11109 list); 11110 if (iocb) 11111 /* Increment fabric iocb count to hold the position */ 11112 atomic_inc(&phba->fabric_iocb_count); 11113 } 11114 spin_unlock_irqrestore(&phba->hbalock, iflags); 11115 if (iocb) { 11116 iocb->fabric_iocb_cmpl = iocb->iocb_cmpl; 11117 iocb->iocb_cmpl = lpfc_cmpl_fabric_iocb; 11118 iocb->iocb_flag |= LPFC_IO_FABRIC; 11119 11120 lpfc_debugfs_disc_trc(iocb->vport, LPFC_DISC_TRC_ELS_CMD, 11121 "Fabric sched1: ste:x%x", 11122 iocb->vport->port_state, 0, 0); 11123 11124 ret = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, iocb, 0); 11125 11126 if (ret == IOCB_ERROR) { 11127 iocb->iocb_cmpl = iocb->fabric_iocb_cmpl; 11128 iocb->fabric_iocb_cmpl = NULL; 11129 iocb->iocb_flag &= ~LPFC_IO_FABRIC; 11130 cmd = &iocb->iocb; 11131 cmd->ulpStatus = IOSTAT_LOCAL_REJECT; 11132 cmd->un.ulpWord[4] = IOERR_SLI_ABORTED; 11133 iocb->iocb_cmpl(phba, iocb, iocb); 11134 11135 atomic_dec(&phba->fabric_iocb_count); 11136 goto repeat; 11137 } 11138 } 11139 } 11140 11141 /** 11142 * lpfc_unblock_fabric_iocbs - Unblock issuing fabric iocb command 11143 * @phba: pointer to lpfc hba data structure. 11144 * 11145 * This routine unblocks the issuing fabric iocb command. The function 11146 * will clear the fabric iocb block bit and then invoke the routine 11147 * lpfc_resume_fabric_iocbs() to issue one of the pending fabric iocb 11148 * from the driver internal fabric iocb list. 11149 **/ 11150 void 11151 lpfc_unblock_fabric_iocbs(struct lpfc_hba *phba) 11152 { 11153 clear_bit(FABRIC_COMANDS_BLOCKED, &phba->bit_flags); 11154 11155 lpfc_resume_fabric_iocbs(phba); 11156 return; 11157 } 11158 11159 /** 11160 * lpfc_block_fabric_iocbs - Block issuing fabric iocb command 11161 * @phba: pointer to lpfc hba data structure. 11162 * 11163 * This routine blocks the issuing fabric iocb for a specified amount of 11164 * time (currently 100 ms). This is done by set the fabric iocb block bit 11165 * and set up a timeout timer for 100ms. When the block bit is set, no more 11166 * fabric iocb will be issued out of the HBA. 11167 **/ 11168 static void 11169 lpfc_block_fabric_iocbs(struct lpfc_hba *phba) 11170 { 11171 int blocked; 11172 11173 blocked = test_and_set_bit(FABRIC_COMANDS_BLOCKED, &phba->bit_flags); 11174 /* Start a timer to unblock fabric iocbs after 100ms */ 11175 if (!blocked) 11176 mod_timer(&phba->fabric_block_timer, 11177 jiffies + msecs_to_jiffies(100)); 11178 11179 return; 11180 } 11181 11182 /** 11183 * lpfc_cmpl_fabric_iocb - Completion callback function for fabric iocb 11184 * @phba: pointer to lpfc hba data structure. 11185 * @cmdiocb: pointer to lpfc command iocb data structure. 11186 * @rspiocb: pointer to lpfc response iocb data structure. 11187 * 11188 * This routine is the callback function that is put to the fabric iocb's 11189 * callback function pointer (iocb->iocb_cmpl). The original iocb's callback 11190 * function pointer has been stored in iocb->fabric_iocb_cmpl. This callback 11191 * function first restores and invokes the original iocb's callback function 11192 * and then invokes the lpfc_resume_fabric_iocbs() routine to issue the next 11193 * fabric bound iocb from the driver internal fabric iocb list onto the wire. 11194 **/ 11195 static void 11196 lpfc_cmpl_fabric_iocb(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb, 11197 struct lpfc_iocbq *rspiocb) 11198 { 11199 struct ls_rjt stat; 11200 11201 BUG_ON((cmdiocb->iocb_flag & LPFC_IO_FABRIC) != LPFC_IO_FABRIC); 11202 11203 switch (rspiocb->iocb.ulpStatus) { 11204 case IOSTAT_NPORT_RJT: 11205 case IOSTAT_FABRIC_RJT: 11206 if (rspiocb->iocb.un.ulpWord[4] & RJT_UNAVAIL_TEMP) { 11207 lpfc_block_fabric_iocbs(phba); 11208 } 11209 break; 11210 11211 case IOSTAT_NPORT_BSY: 11212 case IOSTAT_FABRIC_BSY: 11213 lpfc_block_fabric_iocbs(phba); 11214 break; 11215 11216 case IOSTAT_LS_RJT: 11217 stat.un.lsRjtError = 11218 be32_to_cpu(rspiocb->iocb.un.ulpWord[4]); 11219 if ((stat.un.b.lsRjtRsnCode == LSRJT_UNABLE_TPC) || 11220 (stat.un.b.lsRjtRsnCode == LSRJT_LOGICAL_BSY)) 11221 lpfc_block_fabric_iocbs(phba); 11222 break; 11223 } 11224 11225 BUG_ON(atomic_read(&phba->fabric_iocb_count) == 0); 11226 11227 cmdiocb->iocb_cmpl = cmdiocb->fabric_iocb_cmpl; 11228 cmdiocb->fabric_iocb_cmpl = NULL; 11229 cmdiocb->iocb_flag &= ~LPFC_IO_FABRIC; 11230 cmdiocb->iocb_cmpl(phba, cmdiocb, rspiocb); 11231 11232 atomic_dec(&phba->fabric_iocb_count); 11233 if (!test_bit(FABRIC_COMANDS_BLOCKED, &phba->bit_flags)) { 11234 /* Post any pending iocbs to HBA */ 11235 lpfc_resume_fabric_iocbs(phba); 11236 } 11237 } 11238 11239 /** 11240 * lpfc_issue_fabric_iocb - Issue a fabric iocb command 11241 * @phba: pointer to lpfc hba data structure. 11242 * @iocb: pointer to lpfc command iocb data structure. 11243 * 11244 * This routine is used as the top-level API for issuing a fabric iocb command 11245 * such as FLOGI and FDISC. To accommodate certain switch fabric, this driver 11246 * function makes sure that only one fabric bound iocb will be outstanding at 11247 * any given time. As such, this function will first check to see whether there 11248 * is already an outstanding fabric iocb on the wire. If so, it will put the 11249 * newly issued iocb onto the driver internal fabric iocb list, waiting to be 11250 * issued later. Otherwise, it will issue the iocb on the wire and update the 11251 * fabric iocb count it indicate that there is one fabric iocb on the wire. 11252 * 11253 * Note, this implementation has a potential sending out fabric IOCBs out of 11254 * order. The problem is caused by the construction of the "ready" boolen does 11255 * not include the condition that the internal fabric IOCB list is empty. As 11256 * such, it is possible a fabric IOCB issued by this routine might be "jump" 11257 * ahead of the fabric IOCBs in the internal list. 11258 * 11259 * Return code 11260 * IOCB_SUCCESS - either fabric iocb put on the list or issued successfully 11261 * IOCB_ERROR - failed to issue fabric iocb 11262 **/ 11263 static int 11264 lpfc_issue_fabric_iocb(struct lpfc_hba *phba, struct lpfc_iocbq *iocb) 11265 { 11266 unsigned long iflags; 11267 int ready; 11268 int ret; 11269 11270 BUG_ON(atomic_read(&phba->fabric_iocb_count) > 1); 11271 11272 spin_lock_irqsave(&phba->hbalock, iflags); 11273 ready = atomic_read(&phba->fabric_iocb_count) == 0 && 11274 !test_bit(FABRIC_COMANDS_BLOCKED, &phba->bit_flags); 11275 11276 if (ready) 11277 /* Increment fabric iocb count to hold the position */ 11278 atomic_inc(&phba->fabric_iocb_count); 11279 spin_unlock_irqrestore(&phba->hbalock, iflags); 11280 if (ready) { 11281 iocb->fabric_iocb_cmpl = iocb->iocb_cmpl; 11282 iocb->iocb_cmpl = lpfc_cmpl_fabric_iocb; 11283 iocb->iocb_flag |= LPFC_IO_FABRIC; 11284 11285 lpfc_debugfs_disc_trc(iocb->vport, LPFC_DISC_TRC_ELS_CMD, 11286 "Fabric sched2: ste:x%x", 11287 iocb->vport->port_state, 0, 0); 11288 11289 ret = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, iocb, 0); 11290 11291 if (ret == IOCB_ERROR) { 11292 iocb->iocb_cmpl = iocb->fabric_iocb_cmpl; 11293 iocb->fabric_iocb_cmpl = NULL; 11294 iocb->iocb_flag &= ~LPFC_IO_FABRIC; 11295 atomic_dec(&phba->fabric_iocb_count); 11296 } 11297 } else { 11298 spin_lock_irqsave(&phba->hbalock, iflags); 11299 list_add_tail(&iocb->list, &phba->fabric_iocb_list); 11300 spin_unlock_irqrestore(&phba->hbalock, iflags); 11301 ret = IOCB_SUCCESS; 11302 } 11303 return ret; 11304 } 11305 11306 /** 11307 * lpfc_fabric_abort_vport - Abort a vport's iocbs from driver fabric iocb list 11308 * @vport: pointer to a virtual N_Port data structure. 11309 * 11310 * This routine aborts all the IOCBs associated with a @vport from the 11311 * driver internal fabric IOCB list. The list contains fabric IOCBs to be 11312 * issued to the ELS IOCB ring. This abort function walks the fabric IOCB 11313 * list, removes each IOCB associated with the @vport off the list, set the 11314 * status field to IOSTAT_LOCAL_REJECT, and invokes the callback function 11315 * associated with the IOCB. 11316 **/ 11317 static void lpfc_fabric_abort_vport(struct lpfc_vport *vport) 11318 { 11319 LIST_HEAD(completions); 11320 struct lpfc_hba *phba = vport->phba; 11321 struct lpfc_iocbq *tmp_iocb, *piocb; 11322 11323 spin_lock_irq(&phba->hbalock); 11324 list_for_each_entry_safe(piocb, tmp_iocb, &phba->fabric_iocb_list, 11325 list) { 11326 11327 if (piocb->vport != vport) 11328 continue; 11329 11330 list_move_tail(&piocb->list, &completions); 11331 } 11332 spin_unlock_irq(&phba->hbalock); 11333 11334 /* Cancel all the IOCBs from the completions list */ 11335 lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT, 11336 IOERR_SLI_ABORTED); 11337 } 11338 11339 /** 11340 * lpfc_fabric_abort_nport - Abort a ndlp's iocbs from driver fabric iocb list 11341 * @ndlp: pointer to a node-list data structure. 11342 * 11343 * This routine aborts all the IOCBs associated with an @ndlp from the 11344 * driver internal fabric IOCB list. The list contains fabric IOCBs to be 11345 * issued to the ELS IOCB ring. This abort function walks the fabric IOCB 11346 * list, removes each IOCB associated with the @ndlp off the list, set the 11347 * status field to IOSTAT_LOCAL_REJECT, and invokes the callback function 11348 * associated with the IOCB. 11349 **/ 11350 void lpfc_fabric_abort_nport(struct lpfc_nodelist *ndlp) 11351 { 11352 LIST_HEAD(completions); 11353 struct lpfc_hba *phba = ndlp->phba; 11354 struct lpfc_iocbq *tmp_iocb, *piocb; 11355 struct lpfc_sli_ring *pring; 11356 11357 pring = lpfc_phba_elsring(phba); 11358 11359 if (unlikely(!pring)) 11360 return; 11361 11362 spin_lock_irq(&phba->hbalock); 11363 list_for_each_entry_safe(piocb, tmp_iocb, &phba->fabric_iocb_list, 11364 list) { 11365 if ((lpfc_check_sli_ndlp(phba, pring, piocb, ndlp))) { 11366 11367 list_move_tail(&piocb->list, &completions); 11368 } 11369 } 11370 spin_unlock_irq(&phba->hbalock); 11371 11372 /* Cancel all the IOCBs from the completions list */ 11373 lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT, 11374 IOERR_SLI_ABORTED); 11375 } 11376 11377 /** 11378 * lpfc_fabric_abort_hba - Abort all iocbs on driver fabric iocb list 11379 * @phba: pointer to lpfc hba data structure. 11380 * 11381 * This routine aborts all the IOCBs currently on the driver internal 11382 * fabric IOCB list. The list contains fabric IOCBs to be issued to the ELS 11383 * IOCB ring. This function takes the entire IOCB list off the fabric IOCB 11384 * list, removes IOCBs off the list, set the status field to 11385 * IOSTAT_LOCAL_REJECT, and invokes the callback function associated with 11386 * the IOCB. 11387 **/ 11388 void lpfc_fabric_abort_hba(struct lpfc_hba *phba) 11389 { 11390 LIST_HEAD(completions); 11391 11392 spin_lock_irq(&phba->hbalock); 11393 list_splice_init(&phba->fabric_iocb_list, &completions); 11394 spin_unlock_irq(&phba->hbalock); 11395 11396 /* Cancel all the IOCBs from the completions list */ 11397 lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT, 11398 IOERR_SLI_ABORTED); 11399 } 11400 11401 /** 11402 * lpfc_sli4_vport_delete_els_xri_aborted -Remove all ndlp references for vport 11403 * @vport: pointer to lpfc vport data structure. 11404 * 11405 * This routine is invoked by the vport cleanup for deletions and the cleanup 11406 * for an ndlp on removal. 11407 **/ 11408 void 11409 lpfc_sli4_vport_delete_els_xri_aborted(struct lpfc_vport *vport) 11410 { 11411 struct lpfc_hba *phba = vport->phba; 11412 struct lpfc_sglq *sglq_entry = NULL, *sglq_next = NULL; 11413 struct lpfc_nodelist *ndlp = NULL; 11414 unsigned long iflag = 0; 11415 11416 spin_lock_irqsave(&phba->sli4_hba.sgl_list_lock, iflag); 11417 list_for_each_entry_safe(sglq_entry, sglq_next, 11418 &phba->sli4_hba.lpfc_abts_els_sgl_list, list) { 11419 if (sglq_entry->ndlp && sglq_entry->ndlp->vport == vport) { 11420 lpfc_nlp_put(sglq_entry->ndlp); 11421 ndlp = sglq_entry->ndlp; 11422 sglq_entry->ndlp = NULL; 11423 11424 /* If the xri on the abts_els_sgl list is for the Fport 11425 * node and the vport is unloading, the xri aborted wcqe 11426 * likely isn't coming back. Just release the sgl. 11427 */ 11428 if ((vport->load_flag & FC_UNLOADING) && 11429 ndlp->nlp_DID == Fabric_DID) { 11430 list_del(&sglq_entry->list); 11431 sglq_entry->state = SGL_FREED; 11432 list_add_tail(&sglq_entry->list, 11433 &phba->sli4_hba.lpfc_els_sgl_list); 11434 } 11435 } 11436 } 11437 spin_unlock_irqrestore(&phba->sli4_hba.sgl_list_lock, iflag); 11438 return; 11439 } 11440 11441 /** 11442 * lpfc_sli4_els_xri_aborted - Slow-path process of els xri abort 11443 * @phba: pointer to lpfc hba data structure. 11444 * @axri: pointer to the els xri abort wcqe structure. 11445 * 11446 * This routine is invoked by the worker thread to process a SLI4 slow-path 11447 * ELS aborted xri. 11448 **/ 11449 void 11450 lpfc_sli4_els_xri_aborted(struct lpfc_hba *phba, 11451 struct sli4_wcqe_xri_aborted *axri) 11452 { 11453 uint16_t xri = bf_get(lpfc_wcqe_xa_xri, axri); 11454 uint16_t rxid = bf_get(lpfc_wcqe_xa_remote_xid, axri); 11455 uint16_t lxri = 0; 11456 11457 struct lpfc_sglq *sglq_entry = NULL, *sglq_next = NULL; 11458 unsigned long iflag = 0; 11459 struct lpfc_nodelist *ndlp; 11460 struct lpfc_sli_ring *pring; 11461 11462 pring = lpfc_phba_elsring(phba); 11463 11464 spin_lock_irqsave(&phba->sli4_hba.sgl_list_lock, iflag); 11465 list_for_each_entry_safe(sglq_entry, sglq_next, 11466 &phba->sli4_hba.lpfc_abts_els_sgl_list, list) { 11467 if (sglq_entry->sli4_xritag == xri) { 11468 list_del(&sglq_entry->list); 11469 ndlp = sglq_entry->ndlp; 11470 sglq_entry->ndlp = NULL; 11471 list_add_tail(&sglq_entry->list, 11472 &phba->sli4_hba.lpfc_els_sgl_list); 11473 sglq_entry->state = SGL_FREED; 11474 spin_unlock_irqrestore(&phba->sli4_hba.sgl_list_lock, 11475 iflag); 11476 11477 if (ndlp) { 11478 lpfc_set_rrq_active(phba, ndlp, 11479 sglq_entry->sli4_lxritag, 11480 rxid, 1); 11481 lpfc_nlp_put(ndlp); 11482 } 11483 11484 /* Check if TXQ queue needs to be serviced */ 11485 if (pring && !list_empty(&pring->txq)) 11486 lpfc_worker_wake_up(phba); 11487 return; 11488 } 11489 } 11490 spin_unlock_irqrestore(&phba->sli4_hba.sgl_list_lock, iflag); 11491 lxri = lpfc_sli4_xri_inrange(phba, xri); 11492 if (lxri == NO_XRI) 11493 return; 11494 11495 spin_lock_irqsave(&phba->hbalock, iflag); 11496 sglq_entry = __lpfc_get_active_sglq(phba, lxri); 11497 if (!sglq_entry || (sglq_entry->sli4_xritag != xri)) { 11498 spin_unlock_irqrestore(&phba->hbalock, iflag); 11499 return; 11500 } 11501 sglq_entry->state = SGL_XRI_ABORTED; 11502 spin_unlock_irqrestore(&phba->hbalock, iflag); 11503 return; 11504 } 11505 11506 /* lpfc_sli_abts_recover_port - Recover a port that failed a BLS_ABORT req. 11507 * @vport: pointer to virtual port object. 11508 * @ndlp: nodelist pointer for the impacted node. 11509 * 11510 * The driver calls this routine in response to an SLI4 XRI ABORT CQE 11511 * or an SLI3 ASYNC_STATUS_CN event from the port. For either event, 11512 * the driver is required to send a LOGO to the remote node before it 11513 * attempts to recover its login to the remote node. 11514 */ 11515 void 11516 lpfc_sli_abts_recover_port(struct lpfc_vport *vport, 11517 struct lpfc_nodelist *ndlp) 11518 { 11519 struct Scsi_Host *shost; 11520 struct lpfc_hba *phba; 11521 unsigned long flags = 0; 11522 11523 shost = lpfc_shost_from_vport(vport); 11524 phba = vport->phba; 11525 if (ndlp->nlp_state != NLP_STE_MAPPED_NODE) { 11526 lpfc_printf_log(phba, KERN_INFO, 11527 LOG_SLI, "3093 No rport recovery needed. " 11528 "rport in state 0x%x\n", ndlp->nlp_state); 11529 return; 11530 } 11531 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 11532 "3094 Start rport recovery on shost id 0x%x " 11533 "fc_id 0x%06x vpi 0x%x rpi 0x%x state 0x%x " 11534 "flags 0x%x\n", 11535 shost->host_no, ndlp->nlp_DID, 11536 vport->vpi, ndlp->nlp_rpi, ndlp->nlp_state, 11537 ndlp->nlp_flag); 11538 /* 11539 * The rport is not responding. Remove the FCP-2 flag to prevent 11540 * an ADISC in the follow-up recovery code. 11541 */ 11542 spin_lock_irqsave(&ndlp->lock, flags); 11543 ndlp->nlp_fcp_info &= ~NLP_FCP_2_DEVICE; 11544 ndlp->nlp_flag |= NLP_ISSUE_LOGO; 11545 spin_unlock_irqrestore(&ndlp->lock, flags); 11546 lpfc_unreg_rpi(vport, ndlp); 11547 } 11548 11549 static void lpfc_init_cs_ctl_bitmap(struct lpfc_vport *vport) 11550 { 11551 bitmap_zero(vport->vmid_priority_range, LPFC_VMID_MAX_PRIORITY_RANGE); 11552 } 11553 11554 static void 11555 lpfc_vmid_set_cs_ctl_range(struct lpfc_vport *vport, u32 min, u32 max) 11556 { 11557 u32 i; 11558 11559 if ((min > max) || (max > LPFC_VMID_MAX_PRIORITY_RANGE)) 11560 return; 11561 11562 for (i = min; i <= max; i++) 11563 set_bit(i, vport->vmid_priority_range); 11564 } 11565 11566 static void lpfc_vmid_put_cs_ctl(struct lpfc_vport *vport, u32 ctcl_vmid) 11567 { 11568 set_bit(ctcl_vmid, vport->vmid_priority_range); 11569 } 11570 11571 u32 lpfc_vmid_get_cs_ctl(struct lpfc_vport *vport) 11572 { 11573 u32 i; 11574 11575 i = find_first_bit(vport->vmid_priority_range, 11576 LPFC_VMID_MAX_PRIORITY_RANGE); 11577 11578 if (i == LPFC_VMID_MAX_PRIORITY_RANGE) 11579 return 0; 11580 11581 clear_bit(i, vport->vmid_priority_range); 11582 return i; 11583 } 11584 11585 #define MAX_PRIORITY_DESC 255 11586 11587 static void 11588 lpfc_cmpl_els_qfpa(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb, 11589 struct lpfc_iocbq *rspiocb) 11590 { 11591 struct lpfc_vport *vport = cmdiocb->vport; 11592 struct priority_range_desc *desc; 11593 struct lpfc_dmabuf *prsp = NULL; 11594 struct lpfc_vmid_priority_range *vmid_range = NULL; 11595 u32 *data; 11596 struct lpfc_dmabuf *dmabuf = cmdiocb->context2; 11597 IOCB_t *irsp = &rspiocb->iocb; 11598 u8 *pcmd, max_desc; 11599 u32 len, i; 11600 struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *)cmdiocb->context1; 11601 11602 prsp = list_get_first(&dmabuf->list, struct lpfc_dmabuf, list); 11603 if (!prsp) 11604 goto out; 11605 11606 pcmd = prsp->virt; 11607 data = (u32 *)pcmd; 11608 if (data[0] == ELS_CMD_LS_RJT) { 11609 lpfc_printf_vlog(vport, KERN_WARNING, LOG_SLI, 11610 "3277 QFPA LS_RJT x%x x%x\n", 11611 data[0], data[1]); 11612 goto out; 11613 } 11614 if (irsp->ulpStatus) { 11615 lpfc_printf_vlog(vport, KERN_ERR, LOG_SLI, 11616 "6529 QFPA failed with status x%x x%x\n", 11617 irsp->ulpStatus, irsp->un.ulpWord[4]); 11618 goto out; 11619 } 11620 11621 if (!vport->qfpa_res) { 11622 max_desc = FCELSSIZE / sizeof(*vport->qfpa_res); 11623 vport->qfpa_res = kcalloc(max_desc, sizeof(*vport->qfpa_res), 11624 GFP_KERNEL); 11625 if (!vport->qfpa_res) 11626 goto out; 11627 } 11628 11629 len = *((u32 *)(pcmd + 4)); 11630 len = be32_to_cpu(len); 11631 memcpy(vport->qfpa_res, pcmd, len + 8); 11632 len = len / LPFC_PRIORITY_RANGE_DESC_SIZE; 11633 11634 desc = (struct priority_range_desc *)(pcmd + 8); 11635 vmid_range = vport->vmid_priority.vmid_range; 11636 if (!vmid_range) { 11637 vmid_range = kcalloc(MAX_PRIORITY_DESC, sizeof(*vmid_range), 11638 GFP_KERNEL); 11639 if (!vmid_range) { 11640 kfree(vport->qfpa_res); 11641 goto out; 11642 } 11643 vport->vmid_priority.vmid_range = vmid_range; 11644 } 11645 vport->vmid_priority.num_descriptors = len; 11646 11647 for (i = 0; i < len; i++, vmid_range++, desc++) { 11648 lpfc_printf_vlog(vport, KERN_DEBUG, LOG_ELS, 11649 "6539 vmid values low=%d, high=%d, qos=%d, " 11650 "local ve id=%d\n", desc->lo_range, 11651 desc->hi_range, desc->qos_priority, 11652 desc->local_ve_id); 11653 11654 vmid_range->low = desc->lo_range << 1; 11655 if (desc->local_ve_id == QFPA_ODD_ONLY) 11656 vmid_range->low++; 11657 if (desc->qos_priority) 11658 vport->vmid_flag |= LPFC_VMID_QOS_ENABLED; 11659 vmid_range->qos = desc->qos_priority; 11660 11661 vmid_range->high = desc->hi_range << 1; 11662 if ((desc->local_ve_id == QFPA_ODD_ONLY) || 11663 (desc->local_ve_id == QFPA_EVEN_ODD)) 11664 vmid_range->high++; 11665 } 11666 lpfc_init_cs_ctl_bitmap(vport); 11667 for (i = 0; i < vport->vmid_priority.num_descriptors; i++) { 11668 lpfc_vmid_set_cs_ctl_range(vport, 11669 vport->vmid_priority.vmid_range[i].low, 11670 vport->vmid_priority.vmid_range[i].high); 11671 } 11672 11673 vport->vmid_flag |= LPFC_VMID_QFPA_CMPL; 11674 out: 11675 lpfc_els_free_iocb(phba, cmdiocb); 11676 lpfc_nlp_put(ndlp); 11677 } 11678 11679 int lpfc_issue_els_qfpa(struct lpfc_vport *vport) 11680 { 11681 struct lpfc_hba *phba = vport->phba; 11682 struct lpfc_nodelist *ndlp; 11683 struct lpfc_iocbq *elsiocb; 11684 u8 *pcmd; 11685 int ret; 11686 11687 ndlp = lpfc_findnode_did(phba->pport, Fabric_DID); 11688 if (!ndlp || ndlp->nlp_state != NLP_STE_UNMAPPED_NODE) 11689 return -ENXIO; 11690 11691 elsiocb = lpfc_prep_els_iocb(vport, 1, LPFC_QFPA_SIZE, 2, ndlp, 11692 ndlp->nlp_DID, ELS_CMD_QFPA); 11693 if (!elsiocb) 11694 return -ENOMEM; 11695 11696 pcmd = (u8 *)(((struct lpfc_dmabuf *)elsiocb->context2)->virt); 11697 11698 *((u32 *)(pcmd)) = ELS_CMD_QFPA; 11699 pcmd += 4; 11700 11701 elsiocb->iocb_cmpl = lpfc_cmpl_els_qfpa; 11702 11703 elsiocb->context1 = lpfc_nlp_get(ndlp); 11704 if (!elsiocb->context1) { 11705 lpfc_els_free_iocb(vport->phba, elsiocb); 11706 return -ENXIO; 11707 } 11708 11709 ret = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 2); 11710 if (ret != IOCB_SUCCESS) { 11711 lpfc_els_free_iocb(phba, elsiocb); 11712 lpfc_nlp_put(ndlp); 11713 return -EIO; 11714 } 11715 vport->vmid_flag &= ~LPFC_VMID_QOS_ENABLED; 11716 return 0; 11717 } 11718 11719 int 11720 lpfc_vmid_uvem(struct lpfc_vport *vport, 11721 struct lpfc_vmid *vmid, bool instantiated) 11722 { 11723 struct lpfc_vem_id_desc *vem_id_desc; 11724 struct lpfc_nodelist *ndlp; 11725 struct lpfc_iocbq *elsiocb; 11726 struct instantiated_ve_desc *inst_desc; 11727 struct lpfc_vmid_context *vmid_context; 11728 u8 *pcmd; 11729 u32 *len; 11730 int ret = 0; 11731 11732 ndlp = lpfc_findnode_did(vport, Fabric_DID); 11733 if (!ndlp || ndlp->nlp_state != NLP_STE_UNMAPPED_NODE) 11734 return -ENXIO; 11735 11736 vmid_context = kmalloc(sizeof(*vmid_context), GFP_KERNEL); 11737 if (!vmid_context) 11738 return -ENOMEM; 11739 elsiocb = lpfc_prep_els_iocb(vport, 1, LPFC_UVEM_SIZE, 2, 11740 ndlp, Fabric_DID, ELS_CMD_UVEM); 11741 if (!elsiocb) 11742 goto out; 11743 11744 lpfc_printf_vlog(vport, KERN_DEBUG, LOG_ELS, 11745 "3427 Host vmid %s %d\n", 11746 vmid->host_vmid, instantiated); 11747 vmid_context->vmp = vmid; 11748 vmid_context->nlp = ndlp; 11749 vmid_context->instantiated = instantiated; 11750 elsiocb->vmid_tag.vmid_context = vmid_context; 11751 pcmd = (u8 *)(((struct lpfc_dmabuf *)elsiocb->context2)->virt); 11752 11753 if (uuid_is_null((uuid_t *)vport->lpfc_vmid_host_uuid)) 11754 memcpy(vport->lpfc_vmid_host_uuid, vmid->host_vmid, 11755 LPFC_COMPRESS_VMID_SIZE); 11756 11757 *((u32 *)(pcmd)) = ELS_CMD_UVEM; 11758 len = (u32 *)(pcmd + 4); 11759 *len = cpu_to_be32(LPFC_UVEM_SIZE - 8); 11760 11761 vem_id_desc = (struct lpfc_vem_id_desc *)(pcmd + 8); 11762 vem_id_desc->tag = be32_to_cpu(VEM_ID_DESC_TAG); 11763 vem_id_desc->length = be32_to_cpu(LPFC_UVEM_VEM_ID_DESC_SIZE); 11764 memcpy(vem_id_desc->vem_id, vport->lpfc_vmid_host_uuid, 11765 LPFC_COMPRESS_VMID_SIZE); 11766 11767 inst_desc = (struct instantiated_ve_desc *)(pcmd + 32); 11768 inst_desc->tag = be32_to_cpu(INSTANTIATED_VE_DESC_TAG); 11769 inst_desc->length = be32_to_cpu(LPFC_UVEM_VE_MAP_DESC_SIZE); 11770 memcpy(inst_desc->global_vem_id, vmid->host_vmid, 11771 LPFC_COMPRESS_VMID_SIZE); 11772 11773 bf_set(lpfc_instantiated_nport_id, inst_desc, vport->fc_myDID); 11774 bf_set(lpfc_instantiated_local_id, inst_desc, 11775 vmid->un.cs_ctl_vmid); 11776 if (instantiated) { 11777 inst_desc->tag = be32_to_cpu(INSTANTIATED_VE_DESC_TAG); 11778 } else { 11779 inst_desc->tag = be32_to_cpu(DEINSTANTIATED_VE_DESC_TAG); 11780 lpfc_vmid_put_cs_ctl(vport, vmid->un.cs_ctl_vmid); 11781 } 11782 inst_desc->word6 = cpu_to_be32(inst_desc->word6); 11783 11784 elsiocb->iocb_cmpl = lpfc_cmpl_els_uvem; 11785 11786 elsiocb->context1 = lpfc_nlp_get(ndlp); 11787 if (!elsiocb->context1) { 11788 lpfc_els_free_iocb(vport->phba, elsiocb); 11789 goto out; 11790 } 11791 11792 ret = lpfc_sli_issue_iocb(vport->phba, LPFC_ELS_RING, elsiocb, 0); 11793 if (ret != IOCB_SUCCESS) { 11794 lpfc_els_free_iocb(vport->phba, elsiocb); 11795 lpfc_nlp_put(ndlp); 11796 goto out; 11797 } 11798 11799 return 0; 11800 out: 11801 kfree(vmid_context); 11802 return -EIO; 11803 } 11804 11805 static void 11806 lpfc_cmpl_els_uvem(struct lpfc_hba *phba, struct lpfc_iocbq *icmdiocb, 11807 struct lpfc_iocbq *rspiocb) 11808 { 11809 struct lpfc_vport *vport = icmdiocb->vport; 11810 struct lpfc_dmabuf *prsp = NULL; 11811 struct lpfc_vmid_context *vmid_context = 11812 icmdiocb->vmid_tag.vmid_context; 11813 struct lpfc_nodelist *ndlp = icmdiocb->context1; 11814 u8 *pcmd; 11815 u32 *data; 11816 IOCB_t *irsp = &rspiocb->iocb; 11817 struct lpfc_dmabuf *dmabuf = icmdiocb->context2; 11818 struct lpfc_vmid *vmid; 11819 11820 vmid = vmid_context->vmp; 11821 if (!ndlp || ndlp->nlp_state != NLP_STE_UNMAPPED_NODE) 11822 ndlp = NULL; 11823 11824 prsp = list_get_first(&dmabuf->list, struct lpfc_dmabuf, list); 11825 if (!prsp) 11826 goto out; 11827 pcmd = prsp->virt; 11828 data = (u32 *)pcmd; 11829 if (data[0] == ELS_CMD_LS_RJT) { 11830 lpfc_printf_vlog(vport, KERN_WARNING, LOG_SLI, 11831 "4532 UVEM LS_RJT %x %x\n", data[0], data[1]); 11832 goto out; 11833 } 11834 if (irsp->ulpStatus) { 11835 lpfc_printf_vlog(vport, KERN_WARNING, LOG_SLI, 11836 "4533 UVEM error status %x: %x\n", 11837 irsp->ulpStatus, irsp->un.ulpWord[4]); 11838 goto out; 11839 } 11840 spin_lock(&phba->hbalock); 11841 /* Set IN USE flag */ 11842 vport->vmid_flag |= LPFC_VMID_IN_USE; 11843 phba->pport->vmid_flag |= LPFC_VMID_IN_USE; 11844 spin_unlock(&phba->hbalock); 11845 11846 if (vmid_context->instantiated) { 11847 write_lock(&vport->vmid_lock); 11848 vmid->flag |= LPFC_VMID_REGISTERED; 11849 vmid->flag &= ~LPFC_VMID_REQ_REGISTER; 11850 write_unlock(&vport->vmid_lock); 11851 } 11852 11853 out: 11854 kfree(vmid_context); 11855 lpfc_els_free_iocb(phba, icmdiocb); 11856 lpfc_nlp_put(ndlp); 11857 } 11858