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