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
29 #include <scsi/scsi.h>
30 #include <scsi/scsi_device.h>
31 #include <scsi/scsi_host.h>
32 #include <scsi/scsi_transport_fc.h>
33 #include <uapi/scsi/fc/fc_fs.h>
34 #include <uapi/scsi/fc/fc_els.h>
35
36 #include "lpfc_hw4.h"
37 #include "lpfc_hw.h"
38 #include "lpfc_sli.h"
39 #include "lpfc_sli4.h"
40 #include "lpfc_nl.h"
41 #include "lpfc_disc.h"
42 #include "lpfc_scsi.h"
43 #include "lpfc.h"
44 #include "lpfc_logmsg.h"
45 #include "lpfc_crtn.h"
46 #include "lpfc_vport.h"
47 #include "lpfc_debugfs.h"
48
49 static int lpfc_els_retry(struct lpfc_hba *, struct lpfc_iocbq *,
50 struct lpfc_iocbq *);
51 static void lpfc_cmpl_fabric_iocb(struct lpfc_hba *, struct lpfc_iocbq *,
52 struct lpfc_iocbq *);
53 static void lpfc_fabric_abort_vport(struct lpfc_vport *vport);
54 static int lpfc_issue_els_fdisc(struct lpfc_vport *vport,
55 struct lpfc_nodelist *ndlp, uint8_t retry);
56 static int lpfc_issue_fabric_iocb(struct lpfc_hba *phba,
57 struct lpfc_iocbq *iocb);
58
59 static int lpfc_max_els_tries = 3;
60
61 /**
62 * lpfc_els_chk_latt - Check host link attention event for a vport
63 * @vport: pointer to a host virtual N_Port data structure.
64 *
65 * This routine checks whether there is an outstanding host link
66 * attention event during the discovery process with the @vport. It is done
67 * by reading the HBA's Host Attention (HA) register. If there is any host
68 * link attention events during this @vport's discovery process, the @vport
69 * shall be marked as FC_ABORT_DISCOVERY, a host link attention clear shall
70 * be issued if the link state is not already in host link cleared state,
71 * and a return code shall indicate whether the host link attention event
72 * had happened.
73 *
74 * Note that, if either the host link is in state LPFC_LINK_DOWN or @vport
75 * state in LPFC_VPORT_READY, the request for checking host link attention
76 * event will be ignored and a return code shall indicate no host link
77 * attention event had happened.
78 *
79 * Return codes
80 * 0 - no host link attention event happened
81 * 1 - host link attention event happened
82 **/
83 int
lpfc_els_chk_latt(struct lpfc_vport * vport)84 lpfc_els_chk_latt(struct lpfc_vport *vport)
85 {
86 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
87 struct lpfc_hba *phba = vport->phba;
88 uint32_t ha_copy;
89
90 if (vport->port_state >= LPFC_VPORT_READY ||
91 phba->link_state == LPFC_LINK_DOWN ||
92 phba->sli_rev > LPFC_SLI_REV3)
93 return 0;
94
95 /* Read the HBA Host Attention Register */
96 if (lpfc_readl(phba->HAregaddr, &ha_copy))
97 return 1;
98
99 if (!(ha_copy & HA_LATT))
100 return 0;
101
102 /* Pending Link Event during Discovery */
103 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
104 "0237 Pending Link Event during "
105 "Discovery: State x%x\n",
106 phba->pport->port_state);
107
108 /* CLEAR_LA should re-enable link attention events and
109 * we should then immediately take a LATT event. The
110 * LATT processing should call lpfc_linkdown() which
111 * will cleanup any left over in-progress discovery
112 * events.
113 */
114 spin_lock_irq(shost->host_lock);
115 vport->fc_flag |= FC_ABORT_DISCOVERY;
116 spin_unlock_irq(shost->host_lock);
117
118 if (phba->link_state != LPFC_CLEAR_LA)
119 lpfc_issue_clear_la(phba, vport);
120
121 return 1;
122 }
123
124 /**
125 * lpfc_prep_els_iocb - Allocate and prepare a lpfc iocb data structure
126 * @vport: pointer to a host virtual N_Port data structure.
127 * @expectRsp: flag indicating whether response is expected.
128 * @cmdSize: size of the ELS command.
129 * @retry: number of retries to the command IOCB when it fails.
130 * @ndlp: pointer to a node-list data structure.
131 * @did: destination identifier.
132 * @elscmd: the ELS command code.
133 *
134 * This routine is used for allocating a lpfc-IOCB data structure from
135 * the driver lpfc-IOCB free-list and prepare the IOCB with the parameters
136 * passed into the routine for discovery state machine to issue an Extended
137 * Link Service (ELS) commands. It is a generic lpfc-IOCB allocation
138 * and preparation routine that is used by all the discovery state machine
139 * routines and the ELS command-specific fields will be later set up by
140 * the individual discovery machine routines after calling this routine
141 * allocating and preparing a generic IOCB data structure. It fills in the
142 * Buffer Descriptor Entries (BDEs), allocates buffers for both command
143 * payload and response payload (if expected). The reference count on the
144 * ndlp is incremented by 1 and the reference to the ndlp is put into
145 * context1 of the IOCB data structure for this IOCB to hold the ndlp
146 * reference for the command's callback function to access later.
147 *
148 * Return code
149 * Pointer to the newly allocated/prepared els iocb data structure
150 * NULL - when els iocb data structure allocation/preparation failed
151 **/
152 struct lpfc_iocbq *
lpfc_prep_els_iocb(struct lpfc_vport * vport,uint8_t expectRsp,uint16_t cmdSize,uint8_t retry,struct lpfc_nodelist * ndlp,uint32_t did,uint32_t elscmd)153 lpfc_prep_els_iocb(struct lpfc_vport *vport, uint8_t expectRsp,
154 uint16_t cmdSize, uint8_t retry,
155 struct lpfc_nodelist *ndlp, uint32_t did,
156 uint32_t elscmd)
157 {
158 struct lpfc_hba *phba = vport->phba;
159 struct lpfc_iocbq *elsiocb;
160 struct lpfc_dmabuf *pcmd, *prsp, *pbuflist;
161 struct ulp_bde64 *bpl;
162 IOCB_t *icmd;
163
164
165 if (!lpfc_is_link_up(phba))
166 return NULL;
167
168 /* Allocate buffer for command iocb */
169 elsiocb = lpfc_sli_get_iocbq(phba);
170
171 if (elsiocb == NULL)
172 return NULL;
173
174 /*
175 * If this command is for fabric controller and HBA running
176 * in FIP mode send FLOGI, FDISC and LOGO as FIP frames.
177 */
178 if ((did == Fabric_DID) &&
179 (phba->hba_flag & HBA_FIP_SUPPORT) &&
180 ((elscmd == ELS_CMD_FLOGI) ||
181 (elscmd == ELS_CMD_FDISC) ||
182 (elscmd == ELS_CMD_LOGO)))
183 switch (elscmd) {
184 case ELS_CMD_FLOGI:
185 elsiocb->iocb_flag |=
186 ((LPFC_ELS_ID_FLOGI << LPFC_FIP_ELS_ID_SHIFT)
187 & LPFC_FIP_ELS_ID_MASK);
188 break;
189 case ELS_CMD_FDISC:
190 elsiocb->iocb_flag |=
191 ((LPFC_ELS_ID_FDISC << LPFC_FIP_ELS_ID_SHIFT)
192 & LPFC_FIP_ELS_ID_MASK);
193 break;
194 case ELS_CMD_LOGO:
195 elsiocb->iocb_flag |=
196 ((LPFC_ELS_ID_LOGO << LPFC_FIP_ELS_ID_SHIFT)
197 & LPFC_FIP_ELS_ID_MASK);
198 break;
199 }
200 else
201 elsiocb->iocb_flag &= ~LPFC_FIP_ELS_ID_MASK;
202
203 icmd = &elsiocb->iocb;
204
205 /* fill in BDEs for command */
206 /* Allocate buffer for command payload */
207 pcmd = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
208 if (pcmd)
209 pcmd->virt = lpfc_mbuf_alloc(phba, MEM_PRI, &pcmd->phys);
210 if (!pcmd || !pcmd->virt)
211 goto els_iocb_free_pcmb_exit;
212
213 INIT_LIST_HEAD(&pcmd->list);
214
215 /* Allocate buffer for response payload */
216 if (expectRsp) {
217 prsp = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
218 if (prsp)
219 prsp->virt = lpfc_mbuf_alloc(phba, MEM_PRI,
220 &prsp->phys);
221 if (!prsp || !prsp->virt)
222 goto els_iocb_free_prsp_exit;
223 INIT_LIST_HEAD(&prsp->list);
224 } else
225 prsp = NULL;
226
227 /* Allocate buffer for Buffer ptr list */
228 pbuflist = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
229 if (pbuflist)
230 pbuflist->virt = lpfc_mbuf_alloc(phba, MEM_PRI,
231 &pbuflist->phys);
232 if (!pbuflist || !pbuflist->virt)
233 goto els_iocb_free_pbuf_exit;
234
235 INIT_LIST_HEAD(&pbuflist->list);
236
237 if (expectRsp) {
238 icmd->un.elsreq64.bdl.addrHigh = putPaddrHigh(pbuflist->phys);
239 icmd->un.elsreq64.bdl.addrLow = putPaddrLow(pbuflist->phys);
240 icmd->un.elsreq64.bdl.bdeFlags = BUFF_TYPE_BLP_64;
241 icmd->un.elsreq64.bdl.bdeSize = (2 * sizeof(struct ulp_bde64));
242
243 icmd->un.elsreq64.remoteID = did; /* DID */
244 icmd->ulpCommand = CMD_ELS_REQUEST64_CR;
245 if (elscmd == ELS_CMD_FLOGI)
246 icmd->ulpTimeout = FF_DEF_RATOV * 2;
247 else if (elscmd == ELS_CMD_LOGO)
248 icmd->ulpTimeout = phba->fc_ratov;
249 else
250 icmd->ulpTimeout = phba->fc_ratov * 2;
251 } else {
252 icmd->un.xseq64.bdl.addrHigh = putPaddrHigh(pbuflist->phys);
253 icmd->un.xseq64.bdl.addrLow = putPaddrLow(pbuflist->phys);
254 icmd->un.xseq64.bdl.bdeFlags = BUFF_TYPE_BLP_64;
255 icmd->un.xseq64.bdl.bdeSize = sizeof(struct ulp_bde64);
256 icmd->un.xseq64.xmit_els_remoteID = did; /* DID */
257 icmd->ulpCommand = CMD_XMIT_ELS_RSP64_CX;
258 }
259 icmd->ulpBdeCount = 1;
260 icmd->ulpLe = 1;
261 icmd->ulpClass = CLASS3;
262
263 /*
264 * If we have NPIV enabled, we want to send ELS traffic by VPI.
265 * For SLI4, since the driver controls VPIs we also want to include
266 * all ELS pt2pt protocol traffic as well.
267 */
268 if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) ||
269 ((phba->sli_rev == LPFC_SLI_REV4) &&
270 (vport->fc_flag & FC_PT2PT))) {
271
272 if (expectRsp) {
273 icmd->un.elsreq64.myID = vport->fc_myDID;
274
275 /* For ELS_REQUEST64_CR, use the VPI by default */
276 icmd->ulpContext = phba->vpi_ids[vport->vpi];
277 }
278
279 icmd->ulpCt_h = 0;
280 /* The CT field must be 0=INVALID_RPI for the ECHO cmd */
281 if (elscmd == ELS_CMD_ECHO)
282 icmd->ulpCt_l = 0; /* context = invalid RPI */
283 else
284 icmd->ulpCt_l = 1; /* context = VPI */
285 }
286
287 bpl = (struct ulp_bde64 *) pbuflist->virt;
288 bpl->addrLow = le32_to_cpu(putPaddrLow(pcmd->phys));
289 bpl->addrHigh = le32_to_cpu(putPaddrHigh(pcmd->phys));
290 bpl->tus.f.bdeSize = cmdSize;
291 bpl->tus.f.bdeFlags = 0;
292 bpl->tus.w = le32_to_cpu(bpl->tus.w);
293
294 if (expectRsp) {
295 bpl++;
296 bpl->addrLow = le32_to_cpu(putPaddrLow(prsp->phys));
297 bpl->addrHigh = le32_to_cpu(putPaddrHigh(prsp->phys));
298 bpl->tus.f.bdeSize = FCELSSIZE;
299 bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64;
300 bpl->tus.w = le32_to_cpu(bpl->tus.w);
301 }
302
303 elsiocb->context2 = pcmd;
304 elsiocb->context3 = pbuflist;
305 elsiocb->retry = retry;
306 elsiocb->vport = vport;
307 elsiocb->drvrTimeout = (phba->fc_ratov << 1) + LPFC_DRVR_TIMEOUT;
308
309 if (prsp) {
310 list_add(&prsp->list, &pcmd->list);
311 }
312 if (expectRsp) {
313 /* Xmit ELS command <elsCmd> to remote NPORT <did> */
314 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
315 "0116 Xmit ELS command x%x to remote "
316 "NPORT x%x I/O tag: x%x, port state:x%x "
317 "rpi x%x fc_flag:x%x\n",
318 elscmd, did, elsiocb->iotag,
319 vport->port_state, ndlp->nlp_rpi,
320 vport->fc_flag);
321 } else {
322 /* Xmit ELS response <elsCmd> to remote NPORT <did> */
323 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
324 "0117 Xmit ELS response x%x to remote "
325 "NPORT x%x I/O tag: x%x, size: x%x "
326 "port_state x%x rpi x%x fc_flag x%x\n",
327 elscmd, ndlp->nlp_DID, elsiocb->iotag,
328 cmdSize, vport->port_state,
329 ndlp->nlp_rpi, vport->fc_flag);
330 }
331 return elsiocb;
332
333 els_iocb_free_pbuf_exit:
334 if (expectRsp)
335 lpfc_mbuf_free(phba, prsp->virt, prsp->phys);
336 kfree(pbuflist);
337
338 els_iocb_free_prsp_exit:
339 lpfc_mbuf_free(phba, pcmd->virt, pcmd->phys);
340 kfree(prsp);
341
342 els_iocb_free_pcmb_exit:
343 kfree(pcmd);
344 lpfc_sli_release_iocbq(phba, elsiocb);
345 return NULL;
346 }
347
348 /**
349 * lpfc_issue_fabric_reglogin - Issue fabric registration login for a vport
350 * @vport: pointer to a host virtual N_Port data structure.
351 *
352 * This routine issues a fabric registration login for a @vport. An
353 * active ndlp node with Fabric_DID must already exist for this @vport.
354 * The routine invokes two mailbox commands to carry out fabric registration
355 * login through the HBA firmware: the first mailbox command requests the
356 * HBA to perform link configuration for the @vport; and the second mailbox
357 * command requests the HBA to perform the actual fabric registration login
358 * with the @vport.
359 *
360 * Return code
361 * 0 - successfully issued fabric registration login for @vport
362 * -ENXIO -- failed to issue fabric registration login for @vport
363 **/
364 int
lpfc_issue_fabric_reglogin(struct lpfc_vport * vport)365 lpfc_issue_fabric_reglogin(struct lpfc_vport *vport)
366 {
367 struct lpfc_hba *phba = vport->phba;
368 LPFC_MBOXQ_t *mbox;
369 struct lpfc_dmabuf *mp;
370 struct lpfc_nodelist *ndlp;
371 struct serv_parm *sp;
372 int rc;
373 int err = 0;
374
375 sp = &phba->fc_fabparam;
376 ndlp = lpfc_findnode_did(vport, Fabric_DID);
377 if (!ndlp) {
378 err = 1;
379 goto fail;
380 }
381
382 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
383 if (!mbox) {
384 err = 2;
385 goto fail;
386 }
387
388 vport->port_state = LPFC_FABRIC_CFG_LINK;
389 lpfc_config_link(phba, mbox);
390 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
391 mbox->vport = vport;
392
393 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
394 if (rc == MBX_NOT_FINISHED) {
395 err = 3;
396 goto fail_free_mbox;
397 }
398
399 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
400 if (!mbox) {
401 err = 4;
402 goto fail;
403 }
404 rc = lpfc_reg_rpi(phba, vport->vpi, Fabric_DID, (uint8_t *)sp, mbox,
405 ndlp->nlp_rpi);
406 if (rc) {
407 err = 5;
408 goto fail_free_mbox;
409 }
410
411 mbox->mbox_cmpl = lpfc_mbx_cmpl_fabric_reg_login;
412 mbox->vport = vport;
413 /* increment the reference count on ndlp to hold reference
414 * for the callback routine.
415 */
416 mbox->ctx_ndlp = lpfc_nlp_get(ndlp);
417 if (!mbox->ctx_ndlp) {
418 err = 6;
419 goto fail_no_ndlp;
420 }
421
422 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
423 if (rc == MBX_NOT_FINISHED) {
424 err = 7;
425 goto fail_issue_reg_login;
426 }
427
428 return 0;
429
430 fail_issue_reg_login:
431 /* decrement the reference count on ndlp just incremented
432 * for the failed mbox command.
433 */
434 lpfc_nlp_put(ndlp);
435 fail_no_ndlp:
436 mp = (struct lpfc_dmabuf *)mbox->ctx_buf;
437 lpfc_mbuf_free(phba, mp->virt, mp->phys);
438 kfree(mp);
439 fail_free_mbox:
440 mempool_free(mbox, phba->mbox_mem_pool);
441
442 fail:
443 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
444 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
445 "0249 Cannot issue Register Fabric login: Err %d\n",
446 err);
447 return -ENXIO;
448 }
449
450 /**
451 * lpfc_issue_reg_vfi - Register VFI for this vport's fabric login
452 * @vport: pointer to a host virtual N_Port data structure.
453 *
454 * This routine issues a REG_VFI mailbox for the vfi, vpi, fcfi triplet for
455 * the @vport. This mailbox command is necessary for SLI4 port only.
456 *
457 * Return code
458 * 0 - successfully issued REG_VFI for @vport
459 * A failure code otherwise.
460 **/
461 int
lpfc_issue_reg_vfi(struct lpfc_vport * vport)462 lpfc_issue_reg_vfi(struct lpfc_vport *vport)
463 {
464 struct lpfc_hba *phba = vport->phba;
465 LPFC_MBOXQ_t *mboxq = NULL;
466 struct lpfc_nodelist *ndlp;
467 struct lpfc_dmabuf *dmabuf = NULL;
468 int rc = 0;
469
470 /* move forward in case of SLI4 FC port loopback test and pt2pt mode */
471 if ((phba->sli_rev == LPFC_SLI_REV4) &&
472 !(phba->link_flag & LS_LOOPBACK_MODE) &&
473 !(vport->fc_flag & FC_PT2PT)) {
474 ndlp = lpfc_findnode_did(vport, Fabric_DID);
475 if (!ndlp) {
476 rc = -ENODEV;
477 goto fail;
478 }
479 }
480
481 mboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
482 if (!mboxq) {
483 rc = -ENOMEM;
484 goto fail;
485 }
486
487 /* Supply CSP's only if we are fabric connect or pt-to-pt connect */
488 if ((vport->fc_flag & FC_FABRIC) || (vport->fc_flag & FC_PT2PT)) {
489 dmabuf = kzalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
490 if (!dmabuf) {
491 rc = -ENOMEM;
492 goto fail;
493 }
494 dmabuf->virt = lpfc_mbuf_alloc(phba, MEM_PRI, &dmabuf->phys);
495 if (!dmabuf->virt) {
496 rc = -ENOMEM;
497 goto fail;
498 }
499 memcpy(dmabuf->virt, &phba->fc_fabparam,
500 sizeof(struct serv_parm));
501 }
502
503 vport->port_state = LPFC_FABRIC_CFG_LINK;
504 if (dmabuf)
505 lpfc_reg_vfi(mboxq, vport, dmabuf->phys);
506 else
507 lpfc_reg_vfi(mboxq, vport, 0);
508
509 mboxq->mbox_cmpl = lpfc_mbx_cmpl_reg_vfi;
510 mboxq->vport = vport;
511 mboxq->ctx_buf = dmabuf;
512 rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_NOWAIT);
513 if (rc == MBX_NOT_FINISHED) {
514 rc = -ENXIO;
515 goto fail;
516 }
517 return 0;
518
519 fail:
520 if (mboxq)
521 mempool_free(mboxq, phba->mbox_mem_pool);
522 if (dmabuf) {
523 if (dmabuf->virt)
524 lpfc_mbuf_free(phba, dmabuf->virt, dmabuf->phys);
525 kfree(dmabuf);
526 }
527
528 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
529 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
530 "0289 Issue Register VFI failed: Err %d\n", rc);
531 return rc;
532 }
533
534 /**
535 * lpfc_issue_unreg_vfi - Unregister VFI for this vport's fabric login
536 * @vport: pointer to a host virtual N_Port data structure.
537 *
538 * This routine issues a UNREG_VFI mailbox with the vfi, vpi, fcfi triplet for
539 * the @vport. This mailbox command is necessary for SLI4 port only.
540 *
541 * Return code
542 * 0 - successfully issued REG_VFI for @vport
543 * A failure code otherwise.
544 **/
545 int
lpfc_issue_unreg_vfi(struct lpfc_vport * vport)546 lpfc_issue_unreg_vfi(struct lpfc_vport *vport)
547 {
548 struct lpfc_hba *phba = vport->phba;
549 struct Scsi_Host *shost;
550 LPFC_MBOXQ_t *mboxq;
551 int rc;
552
553 mboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
554 if (!mboxq) {
555 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
556 "2556 UNREG_VFI mbox allocation failed"
557 "HBA state x%x\n", phba->pport->port_state);
558 return -ENOMEM;
559 }
560
561 lpfc_unreg_vfi(mboxq, vport);
562 mboxq->vport = vport;
563 mboxq->mbox_cmpl = lpfc_unregister_vfi_cmpl;
564
565 rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_NOWAIT);
566 if (rc == MBX_NOT_FINISHED) {
567 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
568 "2557 UNREG_VFI issue mbox failed rc x%x "
569 "HBA state x%x\n",
570 rc, phba->pport->port_state);
571 mempool_free(mboxq, phba->mbox_mem_pool);
572 return -EIO;
573 }
574
575 shost = lpfc_shost_from_vport(vport);
576 spin_lock_irq(shost->host_lock);
577 vport->fc_flag &= ~FC_VFI_REGISTERED;
578 spin_unlock_irq(shost->host_lock);
579 return 0;
580 }
581
582 /**
583 * lpfc_check_clean_addr_bit - Check whether assigned FCID is clean.
584 * @vport: pointer to a host virtual N_Port data structure.
585 * @sp: pointer to service parameter data structure.
586 *
587 * This routine is called from FLOGI/FDISC completion handler functions.
588 * lpfc_check_clean_addr_bit return 1 when FCID/Fabric portname/ Fabric
589 * node nodename is changed in the completion service parameter else return
590 * 0. This function also set flag in the vport data structure to delay
591 * NP_Port discovery after the FLOGI/FDISC completion if Clean address bit
592 * in FLOGI/FDISC response is cleared and FCID/Fabric portname/ Fabric
593 * node nodename is changed in the completion service parameter.
594 *
595 * Return code
596 * 0 - FCID and Fabric Nodename and Fabric portname is not changed.
597 * 1 - FCID or Fabric Nodename or Fabric portname is changed.
598 *
599 **/
600 static uint8_t
lpfc_check_clean_addr_bit(struct lpfc_vport * vport,struct serv_parm * sp)601 lpfc_check_clean_addr_bit(struct lpfc_vport *vport,
602 struct serv_parm *sp)
603 {
604 struct lpfc_hba *phba = vport->phba;
605 uint8_t fabric_param_changed = 0;
606 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
607
608 if ((vport->fc_prevDID != vport->fc_myDID) ||
609 memcmp(&vport->fabric_portname, &sp->portName,
610 sizeof(struct lpfc_name)) ||
611 memcmp(&vport->fabric_nodename, &sp->nodeName,
612 sizeof(struct lpfc_name)) ||
613 (vport->vport_flag & FAWWPN_PARAM_CHG)) {
614 fabric_param_changed = 1;
615 vport->vport_flag &= ~FAWWPN_PARAM_CHG;
616 }
617 /*
618 * Word 1 Bit 31 in common service parameter is overloaded.
619 * Word 1 Bit 31 in FLOGI request is multiple NPort request
620 * Word 1 Bit 31 in FLOGI response is clean address bit
621 *
622 * If fabric parameter is changed and clean address bit is
623 * cleared delay nport discovery if
624 * - vport->fc_prevDID != 0 (not initial discovery) OR
625 * - lpfc_delay_discovery module parameter is set.
626 */
627 if (fabric_param_changed && !sp->cmn.clean_address_bit &&
628 (vport->fc_prevDID || phba->cfg_delay_discovery)) {
629 spin_lock_irq(shost->host_lock);
630 vport->fc_flag |= FC_DISC_DELAYED;
631 spin_unlock_irq(shost->host_lock);
632 }
633
634 return fabric_param_changed;
635 }
636
637
638 /**
639 * lpfc_cmpl_els_flogi_fabric - Completion function for flogi to a fabric port
640 * @vport: pointer to a host virtual N_Port data structure.
641 * @ndlp: pointer to a node-list data structure.
642 * @sp: pointer to service parameter data structure.
643 * @irsp: pointer to the IOCB within the lpfc response IOCB.
644 *
645 * This routine is invoked by the lpfc_cmpl_els_flogi() completion callback
646 * function to handle the completion of a Fabric Login (FLOGI) into a fabric
647 * port in a fabric topology. It properly sets up the parameters to the @ndlp
648 * from the IOCB response. It also check the newly assigned N_Port ID to the
649 * @vport against the previously assigned N_Port ID. If it is different from
650 * the previously assigned Destination ID (DID), the lpfc_unreg_rpi() routine
651 * is invoked on all the remaining nodes with the @vport to unregister the
652 * Remote Port Indicators (RPIs). Finally, the lpfc_issue_fabric_reglogin()
653 * is invoked to register login to the fabric.
654 *
655 * Return code
656 * 0 - Success (currently, always return 0)
657 **/
658 static int
lpfc_cmpl_els_flogi_fabric(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,struct serv_parm * sp,IOCB_t * irsp)659 lpfc_cmpl_els_flogi_fabric(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
660 struct serv_parm *sp, IOCB_t *irsp)
661 {
662 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
663 struct lpfc_hba *phba = vport->phba;
664 struct lpfc_nodelist *np;
665 struct lpfc_nodelist *next_np;
666 uint8_t fabric_param_changed;
667
668 spin_lock_irq(shost->host_lock);
669 vport->fc_flag |= FC_FABRIC;
670 spin_unlock_irq(shost->host_lock);
671
672 phba->fc_edtov = be32_to_cpu(sp->cmn.e_d_tov);
673 if (sp->cmn.edtovResolution) /* E_D_TOV ticks are in nanoseconds */
674 phba->fc_edtov = (phba->fc_edtov + 999999) / 1000000;
675
676 phba->fc_edtovResol = sp->cmn.edtovResolution;
677 phba->fc_ratov = (be32_to_cpu(sp->cmn.w2.r_a_tov) + 999) / 1000;
678
679 if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
680 spin_lock_irq(shost->host_lock);
681 vport->fc_flag |= FC_PUBLIC_LOOP;
682 spin_unlock_irq(shost->host_lock);
683 }
684
685 vport->fc_myDID = irsp->un.ulpWord[4] & Mask_DID;
686 memcpy(&ndlp->nlp_portname, &sp->portName, sizeof(struct lpfc_name));
687 memcpy(&ndlp->nlp_nodename, &sp->nodeName, sizeof(struct lpfc_name));
688 ndlp->nlp_class_sup = 0;
689 if (sp->cls1.classValid)
690 ndlp->nlp_class_sup |= FC_COS_CLASS1;
691 if (sp->cls2.classValid)
692 ndlp->nlp_class_sup |= FC_COS_CLASS2;
693 if (sp->cls3.classValid)
694 ndlp->nlp_class_sup |= FC_COS_CLASS3;
695 if (sp->cls4.classValid)
696 ndlp->nlp_class_sup |= FC_COS_CLASS4;
697 ndlp->nlp_maxframe = ((sp->cmn.bbRcvSizeMsb & 0x0F) << 8) |
698 sp->cmn.bbRcvSizeLsb;
699
700 fabric_param_changed = lpfc_check_clean_addr_bit(vport, sp);
701 if (fabric_param_changed) {
702 /* Reset FDMI attribute masks based on config parameter */
703 if (phba->cfg_enable_SmartSAN ||
704 (phba->cfg_fdmi_on == LPFC_FDMI_SUPPORT)) {
705 /* Setup appropriate attribute masks */
706 vport->fdmi_hba_mask = LPFC_FDMI2_HBA_ATTR;
707 if (phba->cfg_enable_SmartSAN)
708 vport->fdmi_port_mask = LPFC_FDMI2_SMART_ATTR;
709 else
710 vport->fdmi_port_mask = LPFC_FDMI2_PORT_ATTR;
711 } else {
712 vport->fdmi_hba_mask = 0;
713 vport->fdmi_port_mask = 0;
714 }
715
716 }
717 memcpy(&vport->fabric_portname, &sp->portName,
718 sizeof(struct lpfc_name));
719 memcpy(&vport->fabric_nodename, &sp->nodeName,
720 sizeof(struct lpfc_name));
721 memcpy(&phba->fc_fabparam, sp, sizeof(struct serv_parm));
722
723 if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) {
724 if (sp->cmn.response_multiple_NPort) {
725 lpfc_printf_vlog(vport, KERN_WARNING,
726 LOG_ELS | LOG_VPORT,
727 "1816 FLOGI NPIV supported, "
728 "response data 0x%x\n",
729 sp->cmn.response_multiple_NPort);
730 spin_lock_irq(&phba->hbalock);
731 phba->link_flag |= LS_NPIV_FAB_SUPPORTED;
732 spin_unlock_irq(&phba->hbalock);
733 } else {
734 /* Because we asked f/w for NPIV it still expects us
735 to call reg_vnpid at least for the physical host */
736 lpfc_printf_vlog(vport, KERN_WARNING,
737 LOG_ELS | LOG_VPORT,
738 "1817 Fabric does not support NPIV "
739 "- configuring single port mode.\n");
740 spin_lock_irq(&phba->hbalock);
741 phba->link_flag &= ~LS_NPIV_FAB_SUPPORTED;
742 spin_unlock_irq(&phba->hbalock);
743 }
744 }
745
746 /*
747 * For FC we need to do some special processing because of the SLI
748 * Port's default settings of the Common Service Parameters.
749 */
750 if ((phba->sli_rev == LPFC_SLI_REV4) &&
751 (phba->sli4_hba.lnk_info.lnk_tp == LPFC_LNK_TYPE_FC)) {
752 /* If physical FC port changed, unreg VFI and ALL VPIs / RPIs */
753 if (fabric_param_changed)
754 lpfc_unregister_fcf_prep(phba);
755
756 /* This should just update the VFI CSPs*/
757 if (vport->fc_flag & FC_VFI_REGISTERED)
758 lpfc_issue_reg_vfi(vport);
759 }
760
761 if (fabric_param_changed &&
762 !(vport->fc_flag & FC_VPORT_NEEDS_REG_VPI)) {
763
764 /* If our NportID changed, we need to ensure all
765 * remaining NPORTs get unreg_login'ed.
766 */
767 list_for_each_entry_safe(np, next_np,
768 &vport->fc_nodes, nlp_listp) {
769 if ((np->nlp_state != NLP_STE_NPR_NODE) ||
770 !(np->nlp_flag & NLP_NPR_ADISC))
771 continue;
772 spin_lock_irq(&np->lock);
773 np->nlp_flag &= ~NLP_NPR_ADISC;
774 spin_unlock_irq(&np->lock);
775 lpfc_unreg_rpi(vport, np);
776 }
777 lpfc_cleanup_pending_mbox(vport);
778
779 if (phba->sli_rev == LPFC_SLI_REV4) {
780 lpfc_sli4_unreg_all_rpis(vport);
781 lpfc_mbx_unreg_vpi(vport);
782 spin_lock_irq(shost->host_lock);
783 vport->fc_flag |= FC_VPORT_NEEDS_INIT_VPI;
784 spin_unlock_irq(shost->host_lock);
785 }
786
787 /*
788 * For SLI3 and SLI4, the VPI needs to be reregistered in
789 * response to this fabric parameter change event.
790 */
791 spin_lock_irq(shost->host_lock);
792 vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
793 spin_unlock_irq(shost->host_lock);
794 } else if ((phba->sli_rev == LPFC_SLI_REV4) &&
795 !(vport->fc_flag & FC_VPORT_NEEDS_REG_VPI)) {
796 /*
797 * Driver needs to re-reg VPI in order for f/w
798 * to update the MAC address.
799 */
800 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
801 lpfc_register_new_vport(phba, vport, ndlp);
802 return 0;
803 }
804
805 if (phba->sli_rev < LPFC_SLI_REV4) {
806 lpfc_nlp_set_state(vport, ndlp, NLP_STE_REG_LOGIN_ISSUE);
807 if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED &&
808 vport->fc_flag & FC_VPORT_NEEDS_REG_VPI)
809 lpfc_register_new_vport(phba, vport, ndlp);
810 else
811 lpfc_issue_fabric_reglogin(vport);
812 } else {
813 ndlp->nlp_type |= NLP_FABRIC;
814 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
815 if ((!(vport->fc_flag & FC_VPORT_NEEDS_REG_VPI)) &&
816 (vport->vpi_state & LPFC_VPI_REGISTERED)) {
817 lpfc_start_fdiscs(phba);
818 lpfc_do_scr_ns_plogi(phba, vport);
819 } else if (vport->fc_flag & FC_VFI_REGISTERED)
820 lpfc_issue_init_vpi(vport);
821 else {
822 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
823 "3135 Need register VFI: (x%x/%x)\n",
824 vport->fc_prevDID, vport->fc_myDID);
825 lpfc_issue_reg_vfi(vport);
826 }
827 }
828 return 0;
829 }
830
831 /**
832 * lpfc_cmpl_els_flogi_nport - Completion function for flogi to an N_Port
833 * @vport: pointer to a host virtual N_Port data structure.
834 * @ndlp: pointer to a node-list data structure.
835 * @sp: pointer to service parameter data structure.
836 *
837 * This routine is invoked by the lpfc_cmpl_els_flogi() completion callback
838 * function to handle the completion of a Fabric Login (FLOGI) into an N_Port
839 * in a point-to-point topology. First, the @vport's N_Port Name is compared
840 * with the received N_Port Name: if the @vport's N_Port Name is greater than
841 * the received N_Port Name lexicographically, this node shall assign local
842 * N_Port ID (PT2PT_LocalID: 1) and remote N_Port ID (PT2PT_RemoteID: 2) and
843 * will send out Port Login (PLOGI) with the N_Port IDs assigned. Otherwise,
844 * this node shall just wait for the remote node to issue PLOGI and assign
845 * N_Port IDs.
846 *
847 * Return code
848 * 0 - Success
849 * -ENXIO - Fail
850 **/
851 static int
lpfc_cmpl_els_flogi_nport(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,struct serv_parm * sp)852 lpfc_cmpl_els_flogi_nport(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
853 struct serv_parm *sp)
854 {
855 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
856 struct lpfc_hba *phba = vport->phba;
857 LPFC_MBOXQ_t *mbox;
858 int rc;
859
860 spin_lock_irq(shost->host_lock);
861 vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP);
862 vport->fc_flag |= FC_PT2PT;
863 spin_unlock_irq(shost->host_lock);
864
865 /* If we are pt2pt with another NPort, force NPIV off! */
866 phba->sli3_options &= ~LPFC_SLI3_NPIV_ENABLED;
867
868 /* If physical FC port changed, unreg VFI and ALL VPIs / RPIs */
869 if ((phba->sli_rev == LPFC_SLI_REV4) && phba->fc_topology_changed) {
870 lpfc_unregister_fcf_prep(phba);
871
872 spin_lock_irq(shost->host_lock);
873 vport->fc_flag &= ~FC_VFI_REGISTERED;
874 spin_unlock_irq(shost->host_lock);
875 phba->fc_topology_changed = 0;
876 }
877
878 rc = memcmp(&vport->fc_portname, &sp->portName,
879 sizeof(vport->fc_portname));
880
881 if (rc >= 0) {
882 /* This side will initiate the PLOGI */
883 spin_lock_irq(shost->host_lock);
884 vport->fc_flag |= FC_PT2PT_PLOGI;
885 spin_unlock_irq(shost->host_lock);
886
887 /*
888 * N_Port ID cannot be 0, set our Id to LocalID
889 * the other side will be RemoteID.
890 */
891
892 /* not equal */
893 if (rc)
894 vport->fc_myDID = PT2PT_LocalID;
895
896 /* Decrement ndlp reference count indicating that ndlp can be
897 * safely released when other references to it are done.
898 */
899 lpfc_nlp_put(ndlp);
900
901 ndlp = lpfc_findnode_did(vport, PT2PT_RemoteID);
902 if (!ndlp) {
903 /*
904 * Cannot find existing Fabric ndlp, so allocate a
905 * new one
906 */
907 ndlp = lpfc_nlp_init(vport, PT2PT_RemoteID);
908 if (!ndlp)
909 goto fail;
910 }
911
912 memcpy(&ndlp->nlp_portname, &sp->portName,
913 sizeof(struct lpfc_name));
914 memcpy(&ndlp->nlp_nodename, &sp->nodeName,
915 sizeof(struct lpfc_name));
916 /* Set state will put ndlp onto node list if not already done */
917 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
918 spin_lock_irq(&ndlp->lock);
919 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
920 spin_unlock_irq(&ndlp->lock);
921
922 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
923 if (!mbox)
924 goto fail;
925
926 lpfc_config_link(phba, mbox);
927
928 mbox->mbox_cmpl = lpfc_mbx_cmpl_local_config_link;
929 mbox->vport = vport;
930 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
931 if (rc == MBX_NOT_FINISHED) {
932 mempool_free(mbox, phba->mbox_mem_pool);
933 goto fail;
934 }
935 } else {
936 /* This side will wait for the PLOGI, decrement ndlp reference
937 * count indicating that ndlp can be released when other
938 * references to it are done.
939 */
940 lpfc_nlp_put(ndlp);
941
942 /* Start discovery - this should just do CLEAR_LA */
943 lpfc_disc_start(vport);
944 }
945
946 return 0;
947 fail:
948 return -ENXIO;
949 }
950
951 /**
952 * lpfc_cmpl_els_flogi - Completion callback function for flogi
953 * @phba: pointer to lpfc hba data structure.
954 * @cmdiocb: pointer to lpfc command iocb data structure.
955 * @rspiocb: pointer to lpfc response iocb data structure.
956 *
957 * This routine is the top-level completion callback function for issuing
958 * a Fabric Login (FLOGI) command. If the response IOCB reported error,
959 * the lpfc_els_retry() routine shall be invoked to retry the FLOGI. If
960 * retry has been made (either immediately or delayed with lpfc_els_retry()
961 * returning 1), the command IOCB will be released and function returned.
962 * If the retry attempt has been given up (possibly reach the maximum
963 * number of retries), one additional decrement of ndlp reference shall be
964 * invoked before going out after releasing the command IOCB. This will
965 * actually release the remote node (Note, lpfc_els_free_iocb() will also
966 * invoke one decrement of ndlp reference count). If no error reported in
967 * the IOCB status, the command Port ID field is used to determine whether
968 * this is a point-to-point topology or a fabric topology: if the Port ID
969 * field is assigned, it is a fabric topology; otherwise, it is a
970 * point-to-point topology. The routine lpfc_cmpl_els_flogi_fabric() or
971 * lpfc_cmpl_els_flogi_nport() shall be invoked accordingly to handle the
972 * specific topology completion conditions.
973 **/
974 static void
lpfc_cmpl_els_flogi(struct lpfc_hba * phba,struct lpfc_iocbq * cmdiocb,struct lpfc_iocbq * rspiocb)975 lpfc_cmpl_els_flogi(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
976 struct lpfc_iocbq *rspiocb)
977 {
978 struct lpfc_vport *vport = cmdiocb->vport;
979 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
980 IOCB_t *irsp = &rspiocb->iocb;
981 struct lpfc_nodelist *ndlp = cmdiocb->context1;
982 struct lpfc_dmabuf *pcmd = cmdiocb->context2, *prsp;
983 struct serv_parm *sp;
984 uint16_t fcf_index;
985 int rc;
986
987 /* Check to see if link went down during discovery */
988 if (lpfc_els_chk_latt(vport)) {
989 /* One additional decrement on node reference count to
990 * trigger the release of the node
991 */
992 lpfc_nlp_put(ndlp);
993 goto out;
994 }
995
996 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
997 "FLOGI cmpl: status:x%x/x%x state:x%x",
998 irsp->ulpStatus, irsp->un.ulpWord[4],
999 vport->port_state);
1000
1001 if (irsp->ulpStatus) {
1002 /*
1003 * In case of FIP mode, perform roundrobin FCF failover
1004 * due to new FCF discovery
1005 */
1006 if ((phba->hba_flag & HBA_FIP_SUPPORT) &&
1007 (phba->fcf.fcf_flag & FCF_DISCOVERY)) {
1008 if (phba->link_state < LPFC_LINK_UP)
1009 goto stop_rr_fcf_flogi;
1010 if ((phba->fcoe_cvl_eventtag_attn ==
1011 phba->fcoe_cvl_eventtag) &&
1012 (irsp->ulpStatus == IOSTAT_LOCAL_REJECT) &&
1013 ((irsp->un.ulpWord[4] & IOERR_PARAM_MASK) ==
1014 IOERR_SLI_ABORTED))
1015 goto stop_rr_fcf_flogi;
1016 else
1017 phba->fcoe_cvl_eventtag_attn =
1018 phba->fcoe_cvl_eventtag;
1019 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP | LOG_ELS,
1020 "2611 FLOGI failed on FCF (x%x), "
1021 "status:x%x/x%x, tmo:x%x, perform "
1022 "roundrobin FCF failover\n",
1023 phba->fcf.current_rec.fcf_indx,
1024 irsp->ulpStatus, irsp->un.ulpWord[4],
1025 irsp->ulpTimeout);
1026 lpfc_sli4_set_fcf_flogi_fail(phba,
1027 phba->fcf.current_rec.fcf_indx);
1028 fcf_index = lpfc_sli4_fcf_rr_next_index_get(phba);
1029 rc = lpfc_sli4_fcf_rr_next_proc(vport, fcf_index);
1030 if (rc)
1031 goto out;
1032 }
1033
1034 stop_rr_fcf_flogi:
1035 /* FLOGI failure */
1036 if (!(irsp->ulpStatus == IOSTAT_LOCAL_REJECT &&
1037 ((irsp->un.ulpWord[4] & IOERR_PARAM_MASK) ==
1038 IOERR_LOOP_OPEN_FAILURE)))
1039 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
1040 "2858 FLOGI failure Status:x%x/x%x TMO"
1041 ":x%x Data x%x x%x\n",
1042 irsp->ulpStatus, irsp->un.ulpWord[4],
1043 irsp->ulpTimeout, phba->hba_flag,
1044 phba->fcf.fcf_flag);
1045
1046 /* Check for retry */
1047 if (lpfc_els_retry(phba, cmdiocb, rspiocb))
1048 goto out;
1049
1050 lpfc_printf_vlog(vport, KERN_WARNING, LOG_TRACE_EVENT,
1051 "0150 FLOGI failure Status:x%x/x%x "
1052 "xri x%x TMO:x%x\n",
1053 irsp->ulpStatus, irsp->un.ulpWord[4],
1054 cmdiocb->sli4_xritag, irsp->ulpTimeout);
1055
1056 /* If this is not a loop open failure, bail out */
1057 if (!(irsp->ulpStatus == IOSTAT_LOCAL_REJECT &&
1058 ((irsp->un.ulpWord[4] & IOERR_PARAM_MASK) ==
1059 IOERR_LOOP_OPEN_FAILURE)))
1060 goto flogifail;
1061
1062 /* FLOGI failed, so there is no fabric */
1063 spin_lock_irq(shost->host_lock);
1064 vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP);
1065 spin_unlock_irq(shost->host_lock);
1066
1067 /* If private loop, then allow max outstanding els to be
1068 * LPFC_MAX_DISC_THREADS (32). Scanning in the case of no
1069 * alpa map would take too long otherwise.
1070 */
1071 if (phba->alpa_map[0] == 0)
1072 vport->cfg_discovery_threads = LPFC_MAX_DISC_THREADS;
1073 if ((phba->sli_rev == LPFC_SLI_REV4) &&
1074 (!(vport->fc_flag & FC_VFI_REGISTERED) ||
1075 (vport->fc_prevDID != vport->fc_myDID) ||
1076 phba->fc_topology_changed)) {
1077 if (vport->fc_flag & FC_VFI_REGISTERED) {
1078 if (phba->fc_topology_changed) {
1079 lpfc_unregister_fcf_prep(phba);
1080 spin_lock_irq(shost->host_lock);
1081 vport->fc_flag &= ~FC_VFI_REGISTERED;
1082 spin_unlock_irq(shost->host_lock);
1083 phba->fc_topology_changed = 0;
1084 } else {
1085 lpfc_sli4_unreg_all_rpis(vport);
1086 }
1087 }
1088
1089 /* Do not register VFI if the driver aborted FLOGI */
1090 if (!lpfc_error_lost_link(irsp))
1091 lpfc_issue_reg_vfi(vport);
1092
1093 lpfc_nlp_put(ndlp);
1094 goto out;
1095 }
1096 goto flogifail;
1097 }
1098 spin_lock_irq(shost->host_lock);
1099 vport->fc_flag &= ~FC_VPORT_CVL_RCVD;
1100 vport->fc_flag &= ~FC_VPORT_LOGO_RCVD;
1101 spin_unlock_irq(shost->host_lock);
1102
1103 /*
1104 * The FLogI succeeded. Sync the data for the CPU before
1105 * accessing it.
1106 */
1107 prsp = list_get_first(&pcmd->list, struct lpfc_dmabuf, list);
1108 if (!prsp)
1109 goto out;
1110 sp = prsp->virt + sizeof(uint32_t);
1111
1112 /* FLOGI completes successfully */
1113 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
1114 "0101 FLOGI completes successfully, I/O tag:x%x, "
1115 "xri x%x Data: x%x x%x x%x x%x x%x %x\n",
1116 cmdiocb->iotag, cmdiocb->sli4_xritag,
1117 irsp->un.ulpWord[4], sp->cmn.e_d_tov,
1118 sp->cmn.w2.r_a_tov, sp->cmn.edtovResolution,
1119 vport->port_state, vport->fc_flag);
1120
1121 if (vport->port_state == LPFC_FLOGI) {
1122 /*
1123 * If Common Service Parameters indicate Nport
1124 * we are point to point, if Fport we are Fabric.
1125 */
1126 if (sp->cmn.fPort)
1127 rc = lpfc_cmpl_els_flogi_fabric(vport, ndlp, sp, irsp);
1128 else if (!(phba->hba_flag & HBA_FCOE_MODE))
1129 rc = lpfc_cmpl_els_flogi_nport(vport, ndlp, sp);
1130 else {
1131 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
1132 "2831 FLOGI response with cleared Fabric "
1133 "bit fcf_index 0x%x "
1134 "Switch Name %02x%02x%02x%02x%02x%02x%02x%02x "
1135 "Fabric Name "
1136 "%02x%02x%02x%02x%02x%02x%02x%02x\n",
1137 phba->fcf.current_rec.fcf_indx,
1138 phba->fcf.current_rec.switch_name[0],
1139 phba->fcf.current_rec.switch_name[1],
1140 phba->fcf.current_rec.switch_name[2],
1141 phba->fcf.current_rec.switch_name[3],
1142 phba->fcf.current_rec.switch_name[4],
1143 phba->fcf.current_rec.switch_name[5],
1144 phba->fcf.current_rec.switch_name[6],
1145 phba->fcf.current_rec.switch_name[7],
1146 phba->fcf.current_rec.fabric_name[0],
1147 phba->fcf.current_rec.fabric_name[1],
1148 phba->fcf.current_rec.fabric_name[2],
1149 phba->fcf.current_rec.fabric_name[3],
1150 phba->fcf.current_rec.fabric_name[4],
1151 phba->fcf.current_rec.fabric_name[5],
1152 phba->fcf.current_rec.fabric_name[6],
1153 phba->fcf.current_rec.fabric_name[7]);
1154
1155 lpfc_nlp_put(ndlp);
1156 spin_lock_irq(&phba->hbalock);
1157 phba->fcf.fcf_flag &= ~FCF_DISCOVERY;
1158 phba->hba_flag &= ~(FCF_RR_INPROG | HBA_DEVLOSS_TMO);
1159 spin_unlock_irq(&phba->hbalock);
1160 phba->fcf.fcf_redisc_attempted = 0; /* reset */
1161 goto out;
1162 }
1163 if (!rc) {
1164 /* Mark the FCF discovery process done */
1165 if (phba->hba_flag & HBA_FIP_SUPPORT)
1166 lpfc_printf_vlog(vport, KERN_INFO, LOG_FIP |
1167 LOG_ELS,
1168 "2769 FLOGI to FCF (x%x) "
1169 "completed successfully\n",
1170 phba->fcf.current_rec.fcf_indx);
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 }
1179
1180 flogifail:
1181 spin_lock_irq(&phba->hbalock);
1182 phba->fcf.fcf_flag &= ~FCF_DISCOVERY;
1183 spin_unlock_irq(&phba->hbalock);
1184
1185 if (!(ndlp->fc4_xpt_flags & (SCSI_XPT_REGD | NVME_XPT_REGD)))
1186 lpfc_nlp_put(ndlp);
1187 if (!lpfc_error_lost_link(irsp)) {
1188 /* FLOGI failed, so just use loop map to make discovery list */
1189 lpfc_disc_list_loopmap(vport);
1190
1191 /* Start discovery */
1192 lpfc_disc_start(vport);
1193 } else if (((irsp->ulpStatus != IOSTAT_LOCAL_REJECT) ||
1194 (((irsp->un.ulpWord[4] & IOERR_PARAM_MASK) !=
1195 IOERR_SLI_ABORTED) &&
1196 ((irsp->un.ulpWord[4] & IOERR_PARAM_MASK) !=
1197 IOERR_SLI_DOWN))) &&
1198 (phba->link_state != LPFC_CLEAR_LA)) {
1199 /* If FLOGI failed enable link interrupt. */
1200 lpfc_issue_clear_la(phba, vport);
1201 }
1202 out:
1203 phba->hba_flag &= ~HBA_FLOGI_OUTSTANDING;
1204 lpfc_els_free_iocb(phba, cmdiocb);
1205 lpfc_nlp_put(ndlp);
1206 }
1207
1208 /**
1209 * lpfc_cmpl_els_link_down - Completion callback function for ELS command
1210 * aborted during a link down
1211 * @phba: pointer to lpfc hba data structure.
1212 * @cmdiocb: pointer to lpfc command iocb data structure.
1213 * @rspiocb: pointer to lpfc response iocb data structure.
1214 *
1215 */
1216 static void
lpfc_cmpl_els_link_down(struct lpfc_hba * phba,struct lpfc_iocbq * cmdiocb,struct lpfc_iocbq * rspiocb)1217 lpfc_cmpl_els_link_down(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
1218 struct lpfc_iocbq *rspiocb)
1219 {
1220 IOCB_t *irsp;
1221 uint32_t *pcmd;
1222 uint32_t cmd;
1223
1224 pcmd = (uint32_t *)(((struct lpfc_dmabuf *)cmdiocb->context2)->virt);
1225 cmd = *pcmd;
1226 irsp = &rspiocb->iocb;
1227
1228 lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
1229 "6445 ELS completes after LINK_DOWN: "
1230 " Status %x/%x cmd x%x flg x%x\n",
1231 irsp->ulpStatus, irsp->un.ulpWord[4], cmd,
1232 cmdiocb->iocb_flag);
1233
1234 if (cmdiocb->iocb_flag & LPFC_IO_FABRIC) {
1235 cmdiocb->iocb_flag &= ~LPFC_IO_FABRIC;
1236 atomic_dec(&phba->fabric_iocb_count);
1237 }
1238 lpfc_els_free_iocb(phba, cmdiocb);
1239 }
1240
1241 /**
1242 * lpfc_issue_els_flogi - Issue an flogi iocb command for a vport
1243 * @vport: pointer to a host virtual N_Port data structure.
1244 * @ndlp: pointer to a node-list data structure.
1245 * @retry: number of retries to the command IOCB.
1246 *
1247 * This routine issues a Fabric Login (FLOGI) Request ELS command
1248 * for a @vport. The initiator service parameters are put into the payload
1249 * of the FLOGI Request IOCB and the top-level callback function pointer
1250 * to lpfc_cmpl_els_flogi() routine is put to the IOCB completion callback
1251 * function field. The lpfc_issue_fabric_iocb routine is invoked to send
1252 * out FLOGI ELS command with one outstanding fabric IOCB at a time.
1253 *
1254 * Note that the ndlp reference count will be incremented by 1 for holding the
1255 * ndlp and the reference to ndlp will be stored into the context1 field of
1256 * the IOCB for the completion callback function to the FLOGI ELS command.
1257 *
1258 * Return code
1259 * 0 - successfully issued flogi iocb for @vport
1260 * 1 - failed to issue flogi iocb for @vport
1261 **/
1262 static int
lpfc_issue_els_flogi(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,uint8_t retry)1263 lpfc_issue_els_flogi(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1264 uint8_t retry)
1265 {
1266 struct lpfc_hba *phba = vport->phba;
1267 struct serv_parm *sp;
1268 IOCB_t *icmd;
1269 struct lpfc_iocbq *elsiocb;
1270 struct lpfc_iocbq defer_flogi_acc;
1271 uint8_t *pcmd;
1272 uint16_t cmdsize;
1273 uint32_t tmo, did;
1274 int rc;
1275
1276 cmdsize = (sizeof(uint32_t) + sizeof(struct serv_parm));
1277 elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp,
1278 ndlp->nlp_DID, ELS_CMD_FLOGI);
1279
1280 if (!elsiocb)
1281 return 1;
1282
1283 icmd = &elsiocb->iocb;
1284 pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
1285
1286 /* For FLOGI request, remainder of payload is service parameters */
1287 *((uint32_t *) (pcmd)) = ELS_CMD_FLOGI;
1288 pcmd += sizeof(uint32_t);
1289 memcpy(pcmd, &vport->fc_sparam, sizeof(struct serv_parm));
1290 sp = (struct serv_parm *) pcmd;
1291
1292 /* Setup CSPs accordingly for Fabric */
1293 sp->cmn.e_d_tov = 0;
1294 sp->cmn.w2.r_a_tov = 0;
1295 sp->cmn.virtual_fabric_support = 0;
1296 sp->cls1.classValid = 0;
1297 if (sp->cmn.fcphLow < FC_PH3)
1298 sp->cmn.fcphLow = FC_PH3;
1299 if (sp->cmn.fcphHigh < FC_PH3)
1300 sp->cmn.fcphHigh = FC_PH3;
1301
1302 if (phba->sli_rev == LPFC_SLI_REV4) {
1303 if (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) ==
1304 LPFC_SLI_INTF_IF_TYPE_0) {
1305 elsiocb->iocb.ulpCt_h = ((SLI4_CT_FCFI >> 1) & 1);
1306 elsiocb->iocb.ulpCt_l = (SLI4_CT_FCFI & 1);
1307 /* FLOGI needs to be 3 for WQE FCFI */
1308 /* Set the fcfi to the fcfi we registered with */
1309 elsiocb->iocb.ulpContext = phba->fcf.fcfi;
1310 }
1311 /* Can't do SLI4 class2 without support sequence coalescing */
1312 sp->cls2.classValid = 0;
1313 sp->cls2.seqDelivery = 0;
1314 } else {
1315 /* Historical, setting sequential-delivery bit for SLI3 */
1316 sp->cls2.seqDelivery = (sp->cls2.classValid) ? 1 : 0;
1317 sp->cls3.seqDelivery = (sp->cls3.classValid) ? 1 : 0;
1318 if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) {
1319 sp->cmn.request_multiple_Nport = 1;
1320 /* For FLOGI, Let FLOGI rsp set the NPortID for VPI 0 */
1321 icmd->ulpCt_h = 1;
1322 icmd->ulpCt_l = 0;
1323 } else
1324 sp->cmn.request_multiple_Nport = 0;
1325 }
1326
1327 if (phba->fc_topology != LPFC_TOPOLOGY_LOOP) {
1328 icmd->un.elsreq64.myID = 0;
1329 icmd->un.elsreq64.fl = 1;
1330 }
1331
1332 tmo = phba->fc_ratov;
1333 phba->fc_ratov = LPFC_DISC_FLOGI_TMO;
1334 lpfc_set_disctmo(vport);
1335 phba->fc_ratov = tmo;
1336
1337 phba->fc_stat.elsXmitFLOGI++;
1338 elsiocb->iocb_cmpl = lpfc_cmpl_els_flogi;
1339
1340 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
1341 "Issue FLOGI: opt:x%x",
1342 phba->sli3_options, 0, 0);
1343
1344 elsiocb->context1 = lpfc_nlp_get(ndlp);
1345 if (!elsiocb->context1) {
1346 lpfc_els_free_iocb(phba, elsiocb);
1347 return 1;
1348 }
1349
1350 rc = lpfc_issue_fabric_iocb(phba, elsiocb);
1351 if (rc == IOCB_ERROR) {
1352 lpfc_els_free_iocb(phba, elsiocb);
1353 lpfc_nlp_put(ndlp);
1354 return 1;
1355 }
1356
1357 phba->hba_flag |= (HBA_FLOGI_ISSUED | HBA_FLOGI_OUTSTANDING);
1358
1359 /* Check for a deferred FLOGI ACC condition */
1360 if (phba->defer_flogi_acc_flag) {
1361 did = vport->fc_myDID;
1362 vport->fc_myDID = Fabric_DID;
1363
1364 memset(&defer_flogi_acc, 0, sizeof(struct lpfc_iocbq));
1365
1366 defer_flogi_acc.iocb.ulpContext = phba->defer_flogi_acc_rx_id;
1367 defer_flogi_acc.iocb.unsli3.rcvsli3.ox_id =
1368 phba->defer_flogi_acc_ox_id;
1369
1370 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
1371 "3354 Xmit deferred FLOGI ACC: rx_id: x%x,"
1372 " ox_id: x%x, hba_flag x%x\n",
1373 phba->defer_flogi_acc_rx_id,
1374 phba->defer_flogi_acc_ox_id, phba->hba_flag);
1375
1376 /* Send deferred FLOGI ACC */
1377 lpfc_els_rsp_acc(vport, ELS_CMD_FLOGI, &defer_flogi_acc,
1378 ndlp, NULL);
1379
1380 phba->defer_flogi_acc_flag = false;
1381
1382 vport->fc_myDID = did;
1383 }
1384
1385 return 0;
1386 }
1387
1388 /**
1389 * lpfc_els_abort_flogi - Abort all outstanding flogi iocbs
1390 * @phba: pointer to lpfc hba data structure.
1391 *
1392 * This routine aborts all the outstanding Fabric Login (FLOGI) IOCBs
1393 * with a @phba. This routine walks all the outstanding IOCBs on the txcmplq
1394 * list and issues an abort IOCB commond on each outstanding IOCB that
1395 * contains a active Fabric_DID ndlp. Note that this function is to issue
1396 * the abort IOCB command on all the outstanding IOCBs, thus when this
1397 * function returns, it does not guarantee all the IOCBs are actually aborted.
1398 *
1399 * Return code
1400 * 0 - Successfully issued abort iocb on all outstanding flogis (Always 0)
1401 **/
1402 int
lpfc_els_abort_flogi(struct lpfc_hba * phba)1403 lpfc_els_abort_flogi(struct lpfc_hba *phba)
1404 {
1405 struct lpfc_sli_ring *pring;
1406 struct lpfc_iocbq *iocb, *next_iocb;
1407 struct lpfc_nodelist *ndlp;
1408 IOCB_t *icmd;
1409
1410 /* Abort outstanding I/O on NPort <nlp_DID> */
1411 lpfc_printf_log(phba, KERN_INFO, LOG_DISCOVERY,
1412 "0201 Abort outstanding I/O on NPort x%x\n",
1413 Fabric_DID);
1414
1415 pring = lpfc_phba_elsring(phba);
1416 if (unlikely(!pring))
1417 return -EIO;
1418
1419 /*
1420 * Check the txcmplq for an iocb that matches the nport the driver is
1421 * searching for.
1422 */
1423 spin_lock_irq(&phba->hbalock);
1424 list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq, list) {
1425 icmd = &iocb->iocb;
1426 if (icmd->ulpCommand == CMD_ELS_REQUEST64_CR) {
1427 ndlp = (struct lpfc_nodelist *)(iocb->context1);
1428 if (ndlp && ndlp->nlp_DID == Fabric_DID) {
1429 if ((phba->pport->fc_flag & FC_PT2PT) &&
1430 !(phba->pport->fc_flag & FC_PT2PT_PLOGI))
1431 iocb->fabric_iocb_cmpl =
1432 lpfc_ignore_els_cmpl;
1433 lpfc_sli_issue_abort_iotag(phba, pring, iocb,
1434 NULL);
1435 }
1436 }
1437 }
1438 /* Make sure HBA is alive */
1439 lpfc_issue_hb_tmo(phba);
1440
1441 spin_unlock_irq(&phba->hbalock);
1442
1443 return 0;
1444 }
1445
1446 /**
1447 * lpfc_initial_flogi - Issue an initial fabric login for a vport
1448 * @vport: pointer to a host virtual N_Port data structure.
1449 *
1450 * This routine issues an initial Fabric Login (FLOGI) for the @vport
1451 * specified. It first searches the ndlp with the Fabric_DID (0xfffffe) from
1452 * the @vport's ndlp list. If no such ndlp found, it will create an ndlp and
1453 * put it into the @vport's ndlp list. If an inactive ndlp found on the list,
1454 * it will just be enabled and made active. The lpfc_issue_els_flogi() routine
1455 * is then invoked with the @vport and the ndlp to perform the FLOGI for the
1456 * @vport.
1457 *
1458 * Return code
1459 * 0 - failed to issue initial flogi for @vport
1460 * 1 - successfully issued initial flogi for @vport
1461 **/
1462 int
lpfc_initial_flogi(struct lpfc_vport * vport)1463 lpfc_initial_flogi(struct lpfc_vport *vport)
1464 {
1465 struct lpfc_nodelist *ndlp;
1466
1467 vport->port_state = LPFC_FLOGI;
1468 lpfc_set_disctmo(vport);
1469
1470 /* First look for the Fabric ndlp */
1471 ndlp = lpfc_findnode_did(vport, Fabric_DID);
1472 if (!ndlp) {
1473 /* Cannot find existing Fabric ndlp, so allocate a new one */
1474 ndlp = lpfc_nlp_init(vport, Fabric_DID);
1475 if (!ndlp)
1476 return 0;
1477 /* Set the node type */
1478 ndlp->nlp_type |= NLP_FABRIC;
1479
1480 /* Put ndlp onto node list */
1481 lpfc_enqueue_node(vport, ndlp);
1482 }
1483
1484 if (lpfc_issue_els_flogi(vport, ndlp, 0)) {
1485 /* This decrement of reference count to node shall kick off
1486 * the release of the node.
1487 */
1488 lpfc_nlp_put(ndlp);
1489 return 0;
1490 }
1491 return 1;
1492 }
1493
1494 /**
1495 * lpfc_initial_fdisc - Issue an initial fabric discovery for a vport
1496 * @vport: pointer to a host virtual N_Port data structure.
1497 *
1498 * This routine issues an initial Fabric Discover (FDISC) for the @vport
1499 * specified. It first searches the ndlp with the Fabric_DID (0xfffffe) from
1500 * the @vport's ndlp list. If no such ndlp found, it will create an ndlp and
1501 * put it into the @vport's ndlp list. If an inactive ndlp found on the list,
1502 * it will just be enabled and made active. The lpfc_issue_els_fdisc() routine
1503 * is then invoked with the @vport and the ndlp to perform the FDISC for the
1504 * @vport.
1505 *
1506 * Return code
1507 * 0 - failed to issue initial fdisc for @vport
1508 * 1 - successfully issued initial fdisc for @vport
1509 **/
1510 int
lpfc_initial_fdisc(struct lpfc_vport * vport)1511 lpfc_initial_fdisc(struct lpfc_vport *vport)
1512 {
1513 struct lpfc_nodelist *ndlp;
1514
1515 /* First look for the Fabric ndlp */
1516 ndlp = lpfc_findnode_did(vport, Fabric_DID);
1517 if (!ndlp) {
1518 /* Cannot find existing Fabric ndlp, so allocate a new one */
1519 ndlp = lpfc_nlp_init(vport, Fabric_DID);
1520 if (!ndlp)
1521 return 0;
1522
1523 /* NPIV is only supported in Fabrics. */
1524 ndlp->nlp_type |= NLP_FABRIC;
1525
1526 /* Put ndlp onto node list */
1527 lpfc_enqueue_node(vport, ndlp);
1528 }
1529
1530 if (lpfc_issue_els_fdisc(vport, ndlp, 0)) {
1531 /* decrement node reference count to trigger the release of
1532 * the node.
1533 */
1534 lpfc_nlp_put(ndlp);
1535 return 0;
1536 }
1537 return 1;
1538 }
1539
1540 /**
1541 * lpfc_more_plogi - Check and issue remaining plogis for a vport
1542 * @vport: pointer to a host virtual N_Port data structure.
1543 *
1544 * This routine checks whether there are more remaining Port Logins
1545 * (PLOGI) to be issued for the @vport. If so, it will invoke the routine
1546 * lpfc_els_disc_plogi() to go through the Node Port Recovery (NPR) nodes
1547 * to issue ELS PLOGIs up to the configured discover threads with the
1548 * @vport (@vport->cfg_discovery_threads). The function also decrement
1549 * the @vport's num_disc_node by 1 if it is not already 0.
1550 **/
1551 void
lpfc_more_plogi(struct lpfc_vport * vport)1552 lpfc_more_plogi(struct lpfc_vport *vport)
1553 {
1554 if (vport->num_disc_nodes)
1555 vport->num_disc_nodes--;
1556
1557 /* Continue discovery with <num_disc_nodes> PLOGIs to go */
1558 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
1559 "0232 Continue discovery with %d PLOGIs to go "
1560 "Data: x%x x%x x%x\n",
1561 vport->num_disc_nodes, vport->fc_plogi_cnt,
1562 vport->fc_flag, vport->port_state);
1563 /* Check to see if there are more PLOGIs to be sent */
1564 if (vport->fc_flag & FC_NLP_MORE)
1565 /* go thru NPR nodes and issue any remaining ELS PLOGIs */
1566 lpfc_els_disc_plogi(vport);
1567
1568 return;
1569 }
1570
1571 /**
1572 * lpfc_plogi_confirm_nport - Confirm plogi wwpn matches stored ndlp
1573 * @phba: pointer to lpfc hba data structure.
1574 * @prsp: pointer to response IOCB payload.
1575 * @ndlp: pointer to a node-list data structure.
1576 *
1577 * This routine checks and indicates whether the WWPN of an N_Port, retrieved
1578 * from a PLOGI, matches the WWPN that is stored in the @ndlp for that N_POrt.
1579 * The following cases are considered N_Port confirmed:
1580 * 1) The N_Port is a Fabric ndlp; 2) The @ndlp is on vport list and matches
1581 * the WWPN of the N_Port logged into; 3) The @ndlp is not on vport list but
1582 * it does not have WWPN assigned either. If the WWPN is confirmed, the
1583 * pointer to the @ndlp will be returned. If the WWPN is not confirmed:
1584 * 1) if there is a node on vport list other than the @ndlp with the same
1585 * WWPN of the N_Port PLOGI logged into, the lpfc_unreg_rpi() will be invoked
1586 * on that node to release the RPI associated with the node; 2) if there is
1587 * no node found on vport list with the same WWPN of the N_Port PLOGI logged
1588 * into, a new node shall be allocated (or activated). In either case, the
1589 * parameters of the @ndlp shall be copied to the new_ndlp, the @ndlp shall
1590 * be released and the new_ndlp shall be put on to the vport node list and
1591 * its pointer returned as the confirmed node.
1592 *
1593 * Note that before the @ndlp got "released", the keepDID from not-matching
1594 * or inactive "new_ndlp" on the vport node list is assigned to the nlp_DID
1595 * of the @ndlp. This is because the release of @ndlp is actually to put it
1596 * into an inactive state on the vport node list and the vport node list
1597 * management algorithm does not allow two node with a same DID.
1598 *
1599 * Return code
1600 * pointer to the PLOGI N_Port @ndlp
1601 **/
1602 static struct lpfc_nodelist *
lpfc_plogi_confirm_nport(struct lpfc_hba * phba,uint32_t * prsp,struct lpfc_nodelist * ndlp)1603 lpfc_plogi_confirm_nport(struct lpfc_hba *phba, uint32_t *prsp,
1604 struct lpfc_nodelist *ndlp)
1605 {
1606 struct lpfc_vport *vport = ndlp->vport;
1607 struct lpfc_nodelist *new_ndlp;
1608 struct serv_parm *sp;
1609 uint8_t name[sizeof(struct lpfc_name)];
1610 uint32_t keepDID = 0, keep_nlp_flag = 0;
1611 uint32_t keep_new_nlp_flag = 0;
1612 uint16_t keep_nlp_state;
1613 u32 keep_nlp_fc4_type = 0;
1614 struct lpfc_nvme_rport *keep_nrport = NULL;
1615 unsigned long *active_rrqs_xri_bitmap = NULL;
1616
1617 /* Fabric nodes can have the same WWPN so we don't bother searching
1618 * by WWPN. Just return the ndlp that was given to us.
1619 */
1620 if (ndlp->nlp_type & NLP_FABRIC)
1621 return ndlp;
1622
1623 sp = (struct serv_parm *) ((uint8_t *) prsp + sizeof(uint32_t));
1624 memset(name, 0, sizeof(struct lpfc_name));
1625
1626 /* Now we find out if the NPort we are logging into, matches the WWPN
1627 * we have for that ndlp. If not, we have some work to do.
1628 */
1629 new_ndlp = lpfc_findnode_wwpn(vport, &sp->portName);
1630
1631 /* return immediately if the WWPN matches ndlp */
1632 if (!new_ndlp || (new_ndlp == ndlp))
1633 return ndlp;
1634
1635 if (phba->sli_rev == LPFC_SLI_REV4) {
1636 active_rrqs_xri_bitmap = mempool_alloc(phba->active_rrq_pool,
1637 GFP_KERNEL);
1638 if (active_rrqs_xri_bitmap)
1639 memset(active_rrqs_xri_bitmap, 0,
1640 phba->cfg_rrq_xri_bitmap_sz);
1641 }
1642
1643 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS | LOG_NODE,
1644 "3178 PLOGI confirm: ndlp x%x x%x x%x: "
1645 "new_ndlp x%x x%x x%x\n",
1646 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_fc4_type,
1647 (new_ndlp ? new_ndlp->nlp_DID : 0),
1648 (new_ndlp ? new_ndlp->nlp_flag : 0),
1649 (new_ndlp ? new_ndlp->nlp_fc4_type : 0));
1650
1651 keepDID = new_ndlp->nlp_DID;
1652
1653 if (phba->sli_rev == LPFC_SLI_REV4 && active_rrqs_xri_bitmap)
1654 memcpy(active_rrqs_xri_bitmap, new_ndlp->active_rrqs_xri_bitmap,
1655 phba->cfg_rrq_xri_bitmap_sz);
1656
1657 /* At this point in this routine, we know new_ndlp will be
1658 * returned. however, any previous GID_FTs that were done
1659 * would have updated nlp_fc4_type in ndlp, so we must ensure
1660 * new_ndlp has the right value.
1661 */
1662 if (vport->fc_flag & FC_FABRIC) {
1663 keep_nlp_fc4_type = new_ndlp->nlp_fc4_type;
1664 new_ndlp->nlp_fc4_type = ndlp->nlp_fc4_type;
1665 }
1666
1667 lpfc_unreg_rpi(vport, new_ndlp);
1668 new_ndlp->nlp_DID = ndlp->nlp_DID;
1669 new_ndlp->nlp_prev_state = ndlp->nlp_prev_state;
1670 if (phba->sli_rev == LPFC_SLI_REV4)
1671 memcpy(new_ndlp->active_rrqs_xri_bitmap,
1672 ndlp->active_rrqs_xri_bitmap,
1673 phba->cfg_rrq_xri_bitmap_sz);
1674
1675 /* Lock both ndlps */
1676 spin_lock_irq(&ndlp->lock);
1677 spin_lock_irq(&new_ndlp->lock);
1678 keep_new_nlp_flag = new_ndlp->nlp_flag;
1679 keep_nlp_flag = ndlp->nlp_flag;
1680 new_ndlp->nlp_flag = ndlp->nlp_flag;
1681
1682 /* if new_ndlp had NLP_UNREG_INP set, keep it */
1683 if (keep_new_nlp_flag & NLP_UNREG_INP)
1684 new_ndlp->nlp_flag |= NLP_UNREG_INP;
1685 else
1686 new_ndlp->nlp_flag &= ~NLP_UNREG_INP;
1687
1688 /* if new_ndlp had NLP_RPI_REGISTERED set, keep it */
1689 if (keep_new_nlp_flag & NLP_RPI_REGISTERED)
1690 new_ndlp->nlp_flag |= NLP_RPI_REGISTERED;
1691 else
1692 new_ndlp->nlp_flag &= ~NLP_RPI_REGISTERED;
1693
1694 /*
1695 * Retain the DROPPED flag. This will take care of the init
1696 * refcount when affecting the state change
1697 */
1698 if (keep_new_nlp_flag & NLP_DROPPED)
1699 new_ndlp->nlp_flag |= NLP_DROPPED;
1700 else
1701 new_ndlp->nlp_flag &= ~NLP_DROPPED;
1702
1703 ndlp->nlp_flag = keep_new_nlp_flag;
1704
1705 /* if ndlp had NLP_UNREG_INP set, keep it */
1706 if (keep_nlp_flag & NLP_UNREG_INP)
1707 ndlp->nlp_flag |= NLP_UNREG_INP;
1708 else
1709 ndlp->nlp_flag &= ~NLP_UNREG_INP;
1710
1711 /* if ndlp had NLP_RPI_REGISTERED set, keep it */
1712 if (keep_nlp_flag & NLP_RPI_REGISTERED)
1713 ndlp->nlp_flag |= NLP_RPI_REGISTERED;
1714 else
1715 ndlp->nlp_flag &= ~NLP_RPI_REGISTERED;
1716
1717 /*
1718 * Retain the DROPPED flag. This will take care of the init
1719 * refcount when affecting the state change
1720 */
1721 if (keep_nlp_flag & NLP_DROPPED)
1722 ndlp->nlp_flag |= NLP_DROPPED;
1723 else
1724 ndlp->nlp_flag &= ~NLP_DROPPED;
1725
1726 spin_unlock_irq(&new_ndlp->lock);
1727 spin_unlock_irq(&ndlp->lock);
1728
1729 /* Set nlp_states accordingly */
1730 keep_nlp_state = new_ndlp->nlp_state;
1731 lpfc_nlp_set_state(vport, new_ndlp, ndlp->nlp_state);
1732
1733 /* interchange the nvme remoteport structs */
1734 keep_nrport = new_ndlp->nrport;
1735 new_ndlp->nrport = ndlp->nrport;
1736
1737 /* Move this back to NPR state */
1738 if (memcmp(&ndlp->nlp_portname, name, sizeof(struct lpfc_name)) == 0) {
1739 /* The new_ndlp is replacing ndlp totally, so we need
1740 * to put ndlp on UNUSED list and try to free it.
1741 */
1742 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
1743 "3179 PLOGI confirm NEW: %x %x\n",
1744 new_ndlp->nlp_DID, keepDID);
1745
1746 /* Two ndlps cannot have the same did on the nodelist.
1747 * Note: for this case, ndlp has a NULL WWPN so setting
1748 * the nlp_fc4_type isn't required.
1749 */
1750 ndlp->nlp_DID = keepDID;
1751 lpfc_nlp_set_state(vport, ndlp, keep_nlp_state);
1752 if (phba->sli_rev == LPFC_SLI_REV4 &&
1753 active_rrqs_xri_bitmap)
1754 memcpy(ndlp->active_rrqs_xri_bitmap,
1755 active_rrqs_xri_bitmap,
1756 phba->cfg_rrq_xri_bitmap_sz);
1757
1758 } else {
1759 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
1760 "3180 PLOGI confirm SWAP: %x %x\n",
1761 new_ndlp->nlp_DID, keepDID);
1762
1763 lpfc_unreg_rpi(vport, ndlp);
1764
1765 /* Two ndlps cannot have the same did and the fc4
1766 * type must be transferred because the ndlp is in
1767 * flight.
1768 */
1769 ndlp->nlp_DID = keepDID;
1770 ndlp->nlp_fc4_type = keep_nlp_fc4_type;
1771
1772 if (phba->sli_rev == LPFC_SLI_REV4 &&
1773 active_rrqs_xri_bitmap)
1774 memcpy(ndlp->active_rrqs_xri_bitmap,
1775 active_rrqs_xri_bitmap,
1776 phba->cfg_rrq_xri_bitmap_sz);
1777
1778 /* Since we are switching over to the new_ndlp,
1779 * reset the old ndlp state
1780 */
1781 if ((ndlp->nlp_state == NLP_STE_UNMAPPED_NODE) ||
1782 (ndlp->nlp_state == NLP_STE_MAPPED_NODE))
1783 keep_nlp_state = NLP_STE_NPR_NODE;
1784 lpfc_nlp_set_state(vport, ndlp, keep_nlp_state);
1785 ndlp->nrport = keep_nrport;
1786 }
1787
1788 /*
1789 * If ndlp is not associated with any rport we can drop it here else
1790 * let dev_loss_tmo_callbk trigger DEVICE_RM event
1791 */
1792 if (!ndlp->rport && (ndlp->nlp_state == NLP_STE_NPR_NODE))
1793 lpfc_disc_state_machine(vport, ndlp, NULL, NLP_EVT_DEVICE_RM);
1794
1795 if (phba->sli_rev == LPFC_SLI_REV4 &&
1796 active_rrqs_xri_bitmap)
1797 mempool_free(active_rrqs_xri_bitmap,
1798 phba->active_rrq_pool);
1799
1800 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS | LOG_NODE,
1801 "3173 PLOGI confirm exit: new_ndlp x%x x%x x%x\n",
1802 new_ndlp->nlp_DID, new_ndlp->nlp_flag,
1803 new_ndlp->nlp_fc4_type);
1804
1805 return new_ndlp;
1806 }
1807
1808 /**
1809 * lpfc_end_rscn - Check and handle more rscn for a vport
1810 * @vport: pointer to a host virtual N_Port data structure.
1811 *
1812 * This routine checks whether more Registration State Change
1813 * Notifications (RSCNs) came in while the discovery state machine was in
1814 * the FC_RSCN_MODE. If so, the lpfc_els_handle_rscn() routine will be
1815 * invoked to handle the additional RSCNs for the @vport. Otherwise, the
1816 * FC_RSCN_MODE bit will be cleared with the @vport to mark as the end of
1817 * handling the RSCNs.
1818 **/
1819 void
lpfc_end_rscn(struct lpfc_vport * vport)1820 lpfc_end_rscn(struct lpfc_vport *vport)
1821 {
1822 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1823
1824 if (vport->fc_flag & FC_RSCN_MODE) {
1825 /*
1826 * Check to see if more RSCNs came in while we were
1827 * processing this one.
1828 */
1829 if (vport->fc_rscn_id_cnt ||
1830 (vport->fc_flag & FC_RSCN_DISCOVERY) != 0)
1831 lpfc_els_handle_rscn(vport);
1832 else {
1833 spin_lock_irq(shost->host_lock);
1834 vport->fc_flag &= ~FC_RSCN_MODE;
1835 spin_unlock_irq(shost->host_lock);
1836 }
1837 }
1838 }
1839
1840 /**
1841 * lpfc_cmpl_els_rrq - Completion handled for els RRQs.
1842 * @phba: pointer to lpfc hba data structure.
1843 * @cmdiocb: pointer to lpfc command iocb data structure.
1844 * @rspiocb: pointer to lpfc response iocb data structure.
1845 *
1846 * This routine will call the clear rrq function to free the rrq and
1847 * clear the xri's bit in the ndlp's xri_bitmap. If the ndlp does not
1848 * exist then the clear_rrq is still called because the rrq needs to
1849 * be freed.
1850 **/
1851
1852 static void
lpfc_cmpl_els_rrq(struct lpfc_hba * phba,struct lpfc_iocbq * cmdiocb,struct lpfc_iocbq * rspiocb)1853 lpfc_cmpl_els_rrq(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
1854 struct lpfc_iocbq *rspiocb)
1855 {
1856 struct lpfc_vport *vport = cmdiocb->vport;
1857 IOCB_t *irsp;
1858 struct lpfc_nodelist *ndlp = cmdiocb->context1;
1859 struct lpfc_node_rrq *rrq;
1860
1861 /* we pass cmdiocb to state machine which needs rspiocb as well */
1862 rrq = cmdiocb->context_un.rrq;
1863 cmdiocb->context_un.rsp_iocb = rspiocb;
1864
1865 irsp = &rspiocb->iocb;
1866 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
1867 "RRQ cmpl: status:x%x/x%x did:x%x",
1868 irsp->ulpStatus, irsp->un.ulpWord[4],
1869 irsp->un.elsreq64.remoteID);
1870
1871 /* rrq completes to NPort <nlp_DID> */
1872 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
1873 "2880 RRQ completes to DID x%x "
1874 "Data: x%x x%x x%x x%x x%x\n",
1875 irsp->un.elsreq64.remoteID,
1876 irsp->ulpStatus, irsp->un.ulpWord[4],
1877 irsp->ulpTimeout, rrq->xritag, rrq->rxid);
1878
1879 if (irsp->ulpStatus) {
1880 /* Check for retry */
1881 /* RRQ failed Don't print the vport to vport rjts */
1882 if (irsp->ulpStatus != IOSTAT_LS_RJT ||
1883 (((irsp->un.ulpWord[4]) >> 16 != LSRJT_INVALID_CMD) &&
1884 ((irsp->un.ulpWord[4]) >> 16 != LSRJT_UNABLE_TPC)) ||
1885 (phba)->pport->cfg_log_verbose & LOG_ELS)
1886 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
1887 "2881 RRQ failure DID:%06X Status:"
1888 "x%x/x%x\n",
1889 ndlp->nlp_DID, irsp->ulpStatus,
1890 irsp->un.ulpWord[4]);
1891 }
1892
1893 lpfc_clr_rrq_active(phba, rrq->xritag, rrq);
1894 lpfc_els_free_iocb(phba, cmdiocb);
1895 lpfc_nlp_put(ndlp);
1896 return;
1897 }
1898 /**
1899 * lpfc_cmpl_els_plogi - Completion callback function for plogi
1900 * @phba: pointer to lpfc hba data structure.
1901 * @cmdiocb: pointer to lpfc command iocb data structure.
1902 * @rspiocb: pointer to lpfc response iocb data structure.
1903 *
1904 * This routine is the completion callback function for issuing the Port
1905 * Login (PLOGI) command. For PLOGI completion, there must be an active
1906 * ndlp on the vport node list that matches the remote node ID from the
1907 * PLOGI response IOCB. If such ndlp does not exist, the PLOGI is simply
1908 * ignored and command IOCB released. The PLOGI response IOCB status is
1909 * checked for error conditions. If there is error status reported, PLOGI
1910 * retry shall be attempted by invoking the lpfc_els_retry() routine.
1911 * Otherwise, the lpfc_plogi_confirm_nport() routine shall be invoked on
1912 * the ndlp and the NLP_EVT_CMPL_PLOGI state to the Discover State Machine
1913 * (DSM) is set for this PLOGI completion. Finally, it checks whether
1914 * there are additional N_Port nodes with the vport that need to perform
1915 * PLOGI. If so, the lpfc_more_plogi() routine is invoked to issue addition
1916 * PLOGIs.
1917 **/
1918 static void
lpfc_cmpl_els_plogi(struct lpfc_hba * phba,struct lpfc_iocbq * cmdiocb,struct lpfc_iocbq * rspiocb)1919 lpfc_cmpl_els_plogi(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
1920 struct lpfc_iocbq *rspiocb)
1921 {
1922 struct lpfc_vport *vport = cmdiocb->vport;
1923 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1924 IOCB_t *irsp;
1925 struct lpfc_nodelist *ndlp, *free_ndlp;
1926 struct lpfc_dmabuf *prsp;
1927 int disc;
1928
1929 /* we pass cmdiocb to state machine which needs rspiocb as well */
1930 cmdiocb->context_un.rsp_iocb = rspiocb;
1931
1932 irsp = &rspiocb->iocb;
1933 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
1934 "PLOGI cmpl: status:x%x/x%x did:x%x",
1935 irsp->ulpStatus, irsp->un.ulpWord[4],
1936 irsp->un.elsreq64.remoteID);
1937
1938 ndlp = lpfc_findnode_did(vport, irsp->un.elsreq64.remoteID);
1939 if (!ndlp) {
1940 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
1941 "0136 PLOGI completes to NPort x%x "
1942 "with no ndlp. Data: x%x x%x x%x\n",
1943 irsp->un.elsreq64.remoteID,
1944 irsp->ulpStatus, irsp->un.ulpWord[4],
1945 irsp->ulpIoTag);
1946 goto out_freeiocb;
1947 }
1948
1949 /* Since ndlp can be freed in the disc state machine, note if this node
1950 * is being used during discovery.
1951 */
1952 spin_lock_irq(&ndlp->lock);
1953 disc = (ndlp->nlp_flag & NLP_NPR_2B_DISC);
1954 ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
1955 spin_unlock_irq(&ndlp->lock);
1956
1957 /* PLOGI completes to NPort <nlp_DID> */
1958 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
1959 "0102 PLOGI completes to NPort x%06x "
1960 "Data: x%x x%x x%x x%x x%x\n",
1961 ndlp->nlp_DID, ndlp->nlp_fc4_type,
1962 irsp->ulpStatus, irsp->un.ulpWord[4],
1963 disc, vport->num_disc_nodes);
1964
1965 /* Check to see if link went down during discovery */
1966 if (lpfc_els_chk_latt(vport)) {
1967 spin_lock_irq(&ndlp->lock);
1968 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
1969 spin_unlock_irq(&ndlp->lock);
1970 goto out;
1971 }
1972
1973 if (irsp->ulpStatus) {
1974 /* Check for retry */
1975 if (lpfc_els_retry(phba, cmdiocb, rspiocb)) {
1976 /* ELS command is being retried */
1977 if (disc) {
1978 spin_lock_irq(&ndlp->lock);
1979 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
1980 spin_unlock_irq(&ndlp->lock);
1981 }
1982 goto out;
1983 }
1984 /* PLOGI failed Don't print the vport to vport rjts */
1985 if (irsp->ulpStatus != IOSTAT_LS_RJT ||
1986 (((irsp->un.ulpWord[4]) >> 16 != LSRJT_INVALID_CMD) &&
1987 ((irsp->un.ulpWord[4]) >> 16 != LSRJT_UNABLE_TPC)) ||
1988 (phba)->pport->cfg_log_verbose & LOG_ELS)
1989 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
1990 "2753 PLOGI failure DID:%06X Status:x%x/x%x\n",
1991 ndlp->nlp_DID, irsp->ulpStatus,
1992 irsp->un.ulpWord[4]);
1993
1994 /* Do not call DSM for lpfc_els_abort'ed ELS cmds */
1995 if (lpfc_error_lost_link(irsp))
1996 goto check_plogi;
1997 else
1998 lpfc_disc_state_machine(vport, ndlp, cmdiocb,
1999 NLP_EVT_CMPL_PLOGI);
2000
2001 /* As long as this node is not registered with the scsi or nvme
2002 * transport, it is no longer an active node. Otherwise
2003 * devloss handles the final cleanup.
2004 */
2005 if (!(ndlp->fc4_xpt_flags & (SCSI_XPT_REGD | NVME_XPT_REGD))) {
2006 spin_lock_irq(&ndlp->lock);
2007 ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
2008 spin_unlock_irq(&ndlp->lock);
2009 lpfc_disc_state_machine(vport, ndlp, cmdiocb,
2010 NLP_EVT_DEVICE_RM);
2011 }
2012 } else {
2013 /* Good status, call state machine */
2014 prsp = list_entry(((struct lpfc_dmabuf *)
2015 cmdiocb->context2)->list.next,
2016 struct lpfc_dmabuf, list);
2017 ndlp = lpfc_plogi_confirm_nport(phba, prsp->virt, ndlp);
2018 lpfc_disc_state_machine(vport, ndlp, cmdiocb,
2019 NLP_EVT_CMPL_PLOGI);
2020 }
2021
2022 check_plogi:
2023 if (disc && vport->num_disc_nodes) {
2024 /* Check to see if there are more PLOGIs to be sent */
2025 lpfc_more_plogi(vport);
2026
2027 if (vport->num_disc_nodes == 0) {
2028 spin_lock_irq(shost->host_lock);
2029 vport->fc_flag &= ~FC_NDISC_ACTIVE;
2030 spin_unlock_irq(shost->host_lock);
2031
2032 lpfc_can_disctmo(vport);
2033 lpfc_end_rscn(vport);
2034 }
2035 }
2036
2037 out:
2038 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE,
2039 "PLOGI Cmpl PUT: did:x%x refcnt %d",
2040 ndlp->nlp_DID, kref_read(&ndlp->kref), 0);
2041
2042 out_freeiocb:
2043 /* Release the reference on the original I/O request. */
2044 free_ndlp = (struct lpfc_nodelist *)cmdiocb->context1;
2045
2046 lpfc_els_free_iocb(phba, cmdiocb);
2047 lpfc_nlp_put(free_ndlp);
2048 return;
2049 }
2050
2051 /**
2052 * lpfc_issue_els_plogi - Issue an plogi iocb command for a vport
2053 * @vport: pointer to a host virtual N_Port data structure.
2054 * @did: destination port identifier.
2055 * @retry: number of retries to the command IOCB.
2056 *
2057 * This routine issues a Port Login (PLOGI) command to a remote N_Port
2058 * (with the @did) for a @vport. Before issuing a PLOGI to a remote N_Port,
2059 * the ndlp with the remote N_Port DID must exist on the @vport's ndlp list.
2060 * This routine constructs the proper fields of the PLOGI IOCB and invokes
2061 * the lpfc_sli_issue_iocb() routine to send out PLOGI ELS command.
2062 *
2063 * Note that the ndlp reference count will be incremented by 1 for holding
2064 * the ndlp and the reference to ndlp will be stored into the context1 field
2065 * of the IOCB for the completion callback function to the PLOGI ELS command.
2066 *
2067 * Return code
2068 * 0 - Successfully issued a plogi for @vport
2069 * 1 - failed to issue a plogi for @vport
2070 **/
2071 int
lpfc_issue_els_plogi(struct lpfc_vport * vport,uint32_t did,uint8_t retry)2072 lpfc_issue_els_plogi(struct lpfc_vport *vport, uint32_t did, uint8_t retry)
2073 {
2074 struct lpfc_hba *phba = vport->phba;
2075 struct serv_parm *sp;
2076 struct lpfc_nodelist *ndlp;
2077 struct lpfc_iocbq *elsiocb;
2078 uint8_t *pcmd;
2079 uint16_t cmdsize;
2080 int ret;
2081
2082 ndlp = lpfc_findnode_did(vport, did);
2083 if (!ndlp)
2084 return 1;
2085
2086 /* Defer the processing of the issue PLOGI until after the
2087 * outstanding UNREG_RPI mbox command completes, unless we
2088 * are going offline. This logic does not apply for Fabric DIDs
2089 */
2090 if ((ndlp->nlp_flag & NLP_UNREG_INP) &&
2091 ((ndlp->nlp_DID & Fabric_DID_MASK) != Fabric_DID_MASK) &&
2092 !(vport->fc_flag & FC_OFFLINE_MODE)) {
2093 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
2094 "4110 Issue PLOGI x%x deferred "
2095 "on NPort x%x rpi x%x Data: x%px\n",
2096 ndlp->nlp_defer_did, ndlp->nlp_DID,
2097 ndlp->nlp_rpi, ndlp);
2098
2099 /* We can only defer 1st PLOGI */
2100 if (ndlp->nlp_defer_did == NLP_EVT_NOTHING_PENDING)
2101 ndlp->nlp_defer_did = did;
2102 return 0;
2103 }
2104
2105 cmdsize = (sizeof(uint32_t) + sizeof(struct serv_parm));
2106 elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp, did,
2107 ELS_CMD_PLOGI);
2108 if (!elsiocb)
2109 return 1;
2110
2111 spin_lock_irq(&ndlp->lock);
2112 ndlp->nlp_flag &= ~NLP_FCP_PRLI_RJT;
2113 spin_unlock_irq(&ndlp->lock);
2114
2115 pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
2116
2117 /* For PLOGI request, remainder of payload is service parameters */
2118 *((uint32_t *) (pcmd)) = ELS_CMD_PLOGI;
2119 pcmd += sizeof(uint32_t);
2120 memcpy(pcmd, &vport->fc_sparam, sizeof(struct serv_parm));
2121 sp = (struct serv_parm *) pcmd;
2122
2123 /*
2124 * If we are a N-port connected to a Fabric, fix-up paramm's so logins
2125 * to device on remote loops work.
2126 */
2127 if ((vport->fc_flag & FC_FABRIC) && !(vport->fc_flag & FC_PUBLIC_LOOP))
2128 sp->cmn.altBbCredit = 1;
2129
2130 if (sp->cmn.fcphLow < FC_PH_4_3)
2131 sp->cmn.fcphLow = FC_PH_4_3;
2132
2133 if (sp->cmn.fcphHigh < FC_PH3)
2134 sp->cmn.fcphHigh = FC_PH3;
2135
2136 sp->cmn.valid_vendor_ver_level = 0;
2137 memset(sp->un.vendorVersion, 0, sizeof(sp->un.vendorVersion));
2138 sp->cmn.bbRcvSizeMsb &= 0xF;
2139
2140 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
2141 "Issue PLOGI: did:x%x",
2142 did, 0, 0);
2143
2144 /* If our firmware supports this feature, convey that
2145 * information to the target using the vendor specific field.
2146 */
2147 if (phba->sli.sli_flag & LPFC_SLI_SUPPRESS_RSP) {
2148 sp->cmn.valid_vendor_ver_level = 1;
2149 sp->un.vv.vid = cpu_to_be32(LPFC_VV_EMLX_ID);
2150 sp->un.vv.flags = cpu_to_be32(LPFC_VV_SUPPRESS_RSP);
2151 }
2152
2153 phba->fc_stat.elsXmitPLOGI++;
2154 elsiocb->iocb_cmpl = lpfc_cmpl_els_plogi;
2155
2156 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
2157 "Issue PLOGI: did:x%x refcnt %d",
2158 did, kref_read(&ndlp->kref), 0);
2159 elsiocb->context1 = lpfc_nlp_get(ndlp);
2160 if (!elsiocb->context1) {
2161 lpfc_els_free_iocb(phba, elsiocb);
2162 return 1;
2163 }
2164
2165 ret = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
2166 if (ret) {
2167 lpfc_els_free_iocb(phba, elsiocb);
2168 lpfc_nlp_put(ndlp);
2169 return 1;
2170 }
2171
2172 return 0;
2173 }
2174
2175 /**
2176 * lpfc_cmpl_els_prli - Completion callback function for prli
2177 * @phba: pointer to lpfc hba data structure.
2178 * @cmdiocb: pointer to lpfc command iocb data structure.
2179 * @rspiocb: pointer to lpfc response iocb data structure.
2180 *
2181 * This routine is the completion callback function for a Process Login
2182 * (PRLI) ELS command. The PRLI response IOCB status is checked for error
2183 * status. If there is error status reported, PRLI retry shall be attempted
2184 * by invoking the lpfc_els_retry() routine. Otherwise, the state
2185 * NLP_EVT_CMPL_PRLI is sent to the Discover State Machine (DSM) for this
2186 * ndlp to mark the PRLI completion.
2187 **/
2188 static void
lpfc_cmpl_els_prli(struct lpfc_hba * phba,struct lpfc_iocbq * cmdiocb,struct lpfc_iocbq * rspiocb)2189 lpfc_cmpl_els_prli(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
2190 struct lpfc_iocbq *rspiocb)
2191 {
2192 struct lpfc_vport *vport = cmdiocb->vport;
2193 IOCB_t *irsp;
2194 struct lpfc_nodelist *ndlp;
2195 char *mode;
2196 u32 loglevel;
2197
2198 /* we pass cmdiocb to state machine which needs rspiocb as well */
2199 cmdiocb->context_un.rsp_iocb = rspiocb;
2200
2201 irsp = &(rspiocb->iocb);
2202 ndlp = (struct lpfc_nodelist *) cmdiocb->context1;
2203 spin_lock_irq(&ndlp->lock);
2204 ndlp->nlp_flag &= ~NLP_PRLI_SND;
2205
2206 /* Driver supports multiple FC4 types. Counters matter. */
2207 vport->fc_prli_sent--;
2208 ndlp->fc4_prli_sent--;
2209 spin_unlock_irq(&ndlp->lock);
2210
2211 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
2212 "PRLI cmpl: status:x%x/x%x did:x%x",
2213 irsp->ulpStatus, irsp->un.ulpWord[4],
2214 ndlp->nlp_DID);
2215
2216 /* PRLI completes to NPort <nlp_DID> */
2217 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
2218 "0103 PRLI completes to NPort x%06x "
2219 "Data: x%x x%x x%x x%x\n",
2220 ndlp->nlp_DID, irsp->ulpStatus, irsp->un.ulpWord[4],
2221 vport->num_disc_nodes, ndlp->fc4_prli_sent);
2222
2223 /* Check to see if link went down during discovery */
2224 if (lpfc_els_chk_latt(vport))
2225 goto out;
2226
2227 if (irsp->ulpStatus) {
2228 /* Check for retry */
2229 if (lpfc_els_retry(phba, cmdiocb, rspiocb)) {
2230 /* ELS command is being retried */
2231 goto out;
2232 }
2233
2234 /* If we don't send GFT_ID to Fabric, a PRLI error
2235 * could be expected.
2236 */
2237 if ((vport->fc_flag & FC_FABRIC) ||
2238 (vport->cfg_enable_fc4_type != LPFC_ENABLE_BOTH)) {
2239 mode = KERN_ERR;
2240 loglevel = LOG_TRACE_EVENT;
2241 } else {
2242 mode = KERN_INFO;
2243 loglevel = LOG_ELS;
2244 }
2245
2246 /* PRLI failed */
2247 lpfc_printf_vlog(vport, mode, loglevel,
2248 "2754 PRLI failure DID:%06X Status:x%x/x%x, "
2249 "data: x%x\n",
2250 ndlp->nlp_DID, irsp->ulpStatus,
2251 irsp->un.ulpWord[4], ndlp->fc4_prli_sent);
2252
2253 /* Do not call DSM for lpfc_els_abort'ed ELS cmds */
2254 if (!lpfc_error_lost_link(irsp))
2255 lpfc_disc_state_machine(vport, ndlp, cmdiocb,
2256 NLP_EVT_CMPL_PRLI);
2257
2258 /* As long as this node is not registered with the SCSI
2259 * or NVMe transport and no other PRLIs are outstanding,
2260 * it is no longer an active node. Otherwise devloss
2261 * handles the final cleanup.
2262 */
2263 if (!(ndlp->fc4_xpt_flags & (SCSI_XPT_REGD | NVME_XPT_REGD)) &&
2264 !ndlp->fc4_prli_sent) {
2265 spin_lock_irq(&ndlp->lock);
2266 ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
2267 spin_unlock_irq(&ndlp->lock);
2268 lpfc_disc_state_machine(vport, ndlp, cmdiocb,
2269 NLP_EVT_DEVICE_RM);
2270 }
2271 } else {
2272 /* Good status, call state machine. However, if another
2273 * PRLI is outstanding, don't call the state machine
2274 * because final disposition to Mapped or Unmapped is
2275 * completed there.
2276 */
2277 lpfc_disc_state_machine(vport, ndlp, cmdiocb,
2278 NLP_EVT_CMPL_PRLI);
2279 }
2280
2281 out:
2282 lpfc_els_free_iocb(phba, cmdiocb);
2283 lpfc_nlp_put(ndlp);
2284 return;
2285 }
2286
2287 /**
2288 * lpfc_issue_els_prli - Issue a prli iocb command for a vport
2289 * @vport: pointer to a host virtual N_Port data structure.
2290 * @ndlp: pointer to a node-list data structure.
2291 * @retry: number of retries to the command IOCB.
2292 *
2293 * This routine issues a Process Login (PRLI) ELS command for the
2294 * @vport. The PRLI service parameters are set up in the payload of the
2295 * PRLI Request command and the pointer to lpfc_cmpl_els_prli() routine
2296 * is put to the IOCB completion callback func field before invoking the
2297 * routine lpfc_sli_issue_iocb() to send out PRLI command.
2298 *
2299 * Note that the ndlp reference count will be incremented by 1 for holding the
2300 * ndlp and the reference to ndlp will be stored into the context1 field of
2301 * the IOCB for the completion callback function to the PRLI ELS command.
2302 *
2303 * Return code
2304 * 0 - successfully issued prli iocb command for @vport
2305 * 1 - failed to issue prli iocb command for @vport
2306 **/
2307 int
lpfc_issue_els_prli(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,uint8_t retry)2308 lpfc_issue_els_prli(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2309 uint8_t retry)
2310 {
2311 int rc = 0;
2312 struct lpfc_hba *phba = vport->phba;
2313 PRLI *npr;
2314 struct lpfc_nvme_prli *npr_nvme;
2315 struct lpfc_iocbq *elsiocb;
2316 uint8_t *pcmd;
2317 uint16_t cmdsize;
2318 u32 local_nlp_type, elscmd;
2319
2320 /*
2321 * If we are in RSCN mode, the FC4 types supported from a
2322 * previous GFT_ID command may not be accurate. So, if we
2323 * are a NVME Initiator, always look for the possibility of
2324 * the remote NPort beng a NVME Target.
2325 */
2326 if (phba->sli_rev == LPFC_SLI_REV4 &&
2327 vport->fc_flag & FC_RSCN_MODE &&
2328 vport->nvmei_support)
2329 ndlp->nlp_fc4_type |= NLP_FC4_NVME;
2330 local_nlp_type = ndlp->nlp_fc4_type;
2331
2332 /* This routine will issue 1 or 2 PRLIs, so zero all the ndlp
2333 * fields here before any of them can complete.
2334 */
2335 ndlp->nlp_type &= ~(NLP_FCP_TARGET | NLP_FCP_INITIATOR);
2336 ndlp->nlp_type &= ~(NLP_NVME_TARGET | NLP_NVME_INITIATOR);
2337 ndlp->nlp_fcp_info &= ~NLP_FCP_2_DEVICE;
2338 ndlp->nlp_flag &= ~(NLP_FIRSTBURST | NLP_NPR_2B_DISC);
2339 ndlp->nvme_fb_size = 0;
2340
2341 send_next_prli:
2342 if (local_nlp_type & NLP_FC4_FCP) {
2343 /* Payload is 4 + 16 = 20 x14 bytes. */
2344 cmdsize = (sizeof(uint32_t) + sizeof(PRLI));
2345 elscmd = ELS_CMD_PRLI;
2346 } else if (local_nlp_type & NLP_FC4_NVME) {
2347 /* Payload is 4 + 20 = 24 x18 bytes. */
2348 cmdsize = (sizeof(uint32_t) + sizeof(struct lpfc_nvme_prli));
2349 elscmd = ELS_CMD_NVMEPRLI;
2350 } else {
2351 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
2352 "3083 Unknown FC_TYPE x%x ndlp x%06x\n",
2353 ndlp->nlp_fc4_type, ndlp->nlp_DID);
2354 return 1;
2355 }
2356
2357 /* SLI3 ports don't support NVME. If this rport is a strict NVME
2358 * FC4 type, implicitly LOGO.
2359 */
2360 if (phba->sli_rev == LPFC_SLI_REV3 &&
2361 ndlp->nlp_fc4_type == NLP_FC4_NVME) {
2362 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
2363 "3088 Rport fc4 type 0x%x not supported by SLI3 adapter\n",
2364 ndlp->nlp_type);
2365 lpfc_disc_state_machine(vport, ndlp, NULL, NLP_EVT_DEVICE_RM);
2366 return 1;
2367 }
2368
2369 elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp,
2370 ndlp->nlp_DID, elscmd);
2371 if (!elsiocb)
2372 return 1;
2373
2374 pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
2375
2376 /* For PRLI request, remainder of payload is service parameters */
2377 memset(pcmd, 0, cmdsize);
2378
2379 if (local_nlp_type & NLP_FC4_FCP) {
2380 /* Remainder of payload is FCP PRLI parameter page.
2381 * Note: this data structure is defined as
2382 * BE/LE in the structure definition so no
2383 * byte swap call is made.
2384 */
2385 *((uint32_t *)(pcmd)) = ELS_CMD_PRLI;
2386 pcmd += sizeof(uint32_t);
2387 npr = (PRLI *)pcmd;
2388
2389 /*
2390 * If our firmware version is 3.20 or later,
2391 * set the following bits for FC-TAPE support.
2392 */
2393 if (phba->vpd.rev.feaLevelHigh >= 0x02) {
2394 npr->ConfmComplAllowed = 1;
2395 npr->Retry = 1;
2396 npr->TaskRetryIdReq = 1;
2397 }
2398 npr->estabImagePair = 1;
2399 npr->readXferRdyDis = 1;
2400 if (vport->cfg_first_burst_size)
2401 npr->writeXferRdyDis = 1;
2402
2403 /* For FCP support */
2404 npr->prliType = PRLI_FCP_TYPE;
2405 npr->initiatorFunc = 1;
2406 elsiocb->iocb_flag |= LPFC_PRLI_FCP_REQ;
2407
2408 /* Remove FCP type - processed. */
2409 local_nlp_type &= ~NLP_FC4_FCP;
2410 } else if (local_nlp_type & NLP_FC4_NVME) {
2411 /* Remainder of payload is NVME PRLI parameter page.
2412 * This data structure is the newer definition that
2413 * uses bf macros so a byte swap is required.
2414 */
2415 *((uint32_t *)(pcmd)) = ELS_CMD_NVMEPRLI;
2416 pcmd += sizeof(uint32_t);
2417 npr_nvme = (struct lpfc_nvme_prli *)pcmd;
2418 bf_set(prli_type_code, npr_nvme, PRLI_NVME_TYPE);
2419 bf_set(prli_estabImagePair, npr_nvme, 0); /* Should be 0 */
2420 if (phba->nsler) {
2421 bf_set(prli_nsler, npr_nvme, 1);
2422 bf_set(prli_conf, npr_nvme, 1);
2423 }
2424
2425 /* Only initiators request first burst. */
2426 if ((phba->cfg_nvme_enable_fb) &&
2427 !phba->nvmet_support)
2428 bf_set(prli_fba, npr_nvme, 1);
2429
2430 if (phba->nvmet_support) {
2431 bf_set(prli_tgt, npr_nvme, 1);
2432 bf_set(prli_disc, npr_nvme, 1);
2433 } else {
2434 bf_set(prli_init, npr_nvme, 1);
2435 bf_set(prli_conf, npr_nvme, 1);
2436 }
2437
2438 npr_nvme->word1 = cpu_to_be32(npr_nvme->word1);
2439 npr_nvme->word4 = cpu_to_be32(npr_nvme->word4);
2440 elsiocb->iocb_flag |= LPFC_PRLI_NVME_REQ;
2441
2442 /* Remove NVME type - processed. */
2443 local_nlp_type &= ~NLP_FC4_NVME;
2444 }
2445
2446 phba->fc_stat.elsXmitPRLI++;
2447 elsiocb->iocb_cmpl = lpfc_cmpl_els_prli;
2448 spin_lock_irq(&ndlp->lock);
2449 ndlp->nlp_flag |= NLP_PRLI_SND;
2450
2451 /* The vport counters are used for lpfc_scan_finished, but
2452 * the ndlp is used to track outstanding PRLIs for different
2453 * FC4 types.
2454 */
2455 vport->fc_prli_sent++;
2456 ndlp->fc4_prli_sent++;
2457 spin_unlock_irq(&ndlp->lock);
2458
2459 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
2460 "Issue PRLI: did:x%x refcnt %d",
2461 ndlp->nlp_DID, kref_read(&ndlp->kref), 0);
2462 elsiocb->context1 = lpfc_nlp_get(ndlp);
2463 if (!elsiocb->context1) {
2464 lpfc_els_free_iocb(phba, elsiocb);
2465 goto err;
2466 }
2467
2468 rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
2469 if (rc == IOCB_ERROR) {
2470 lpfc_els_free_iocb(phba, elsiocb);
2471 lpfc_nlp_put(ndlp);
2472 goto err;
2473 }
2474
2475
2476 /* The driver supports 2 FC4 types. Make sure
2477 * a PRLI is issued for all types before exiting.
2478 */
2479 if (phba->sli_rev == LPFC_SLI_REV4 &&
2480 local_nlp_type & (NLP_FC4_FCP | NLP_FC4_NVME))
2481 goto send_next_prli;
2482 else
2483 return 0;
2484
2485 err:
2486 spin_lock_irq(&ndlp->lock);
2487 ndlp->nlp_flag &= ~NLP_PRLI_SND;
2488 spin_unlock_irq(&ndlp->lock);
2489 return 1;
2490 }
2491
2492 /**
2493 * lpfc_rscn_disc - Perform rscn discovery for a vport
2494 * @vport: pointer to a host virtual N_Port data structure.
2495 *
2496 * This routine performs Registration State Change Notification (RSCN)
2497 * discovery for a @vport. If the @vport's node port recovery count is not
2498 * zero, it will invoke the lpfc_els_disc_plogi() to perform PLOGI for all
2499 * the nodes that need recovery. If none of the PLOGI were needed through
2500 * the lpfc_els_disc_plogi() routine, the lpfc_end_rscn() routine shall be
2501 * invoked to check and handle possible more RSCN came in during the period
2502 * of processing the current ones.
2503 **/
2504 static void
lpfc_rscn_disc(struct lpfc_vport * vport)2505 lpfc_rscn_disc(struct lpfc_vport *vport)
2506 {
2507 lpfc_can_disctmo(vport);
2508
2509 /* RSCN discovery */
2510 /* go thru NPR nodes and issue ELS PLOGIs */
2511 if (vport->fc_npr_cnt)
2512 if (lpfc_els_disc_plogi(vport))
2513 return;
2514
2515 lpfc_end_rscn(vport);
2516 }
2517
2518 /**
2519 * lpfc_adisc_done - Complete the adisc phase of discovery
2520 * @vport: pointer to lpfc_vport hba data structure that finished all ADISCs.
2521 *
2522 * This function is called when the final ADISC is completed during discovery.
2523 * This function handles clearing link attention or issuing reg_vpi depending
2524 * on whether npiv is enabled. This function also kicks off the PLOGI phase of
2525 * discovery.
2526 * This function is called with no locks held.
2527 **/
2528 static void
lpfc_adisc_done(struct lpfc_vport * vport)2529 lpfc_adisc_done(struct lpfc_vport *vport)
2530 {
2531 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2532 struct lpfc_hba *phba = vport->phba;
2533
2534 /*
2535 * For NPIV, cmpl_reg_vpi will set port_state to READY,
2536 * and continue discovery.
2537 */
2538 if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
2539 !(vport->fc_flag & FC_RSCN_MODE) &&
2540 (phba->sli_rev < LPFC_SLI_REV4)) {
2541 /* The ADISCs are complete. Doesn't matter if they
2542 * succeeded or failed because the ADISC completion
2543 * routine guarantees to call the state machine and
2544 * the RPI is either unregistered (failed ADISC response)
2545 * or the RPI is still valid and the node is marked
2546 * mapped for a target. The exchanges should be in the
2547 * correct state. This code is specific to SLI3.
2548 */
2549 lpfc_issue_clear_la(phba, vport);
2550 lpfc_issue_reg_vpi(phba, vport);
2551 return;
2552 }
2553 /*
2554 * For SLI2, we need to set port_state to READY
2555 * and continue discovery.
2556 */
2557 if (vport->port_state < LPFC_VPORT_READY) {
2558 /* If we get here, there is nothing to ADISC */
2559 lpfc_issue_clear_la(phba, vport);
2560 if (!(vport->fc_flag & FC_ABORT_DISCOVERY)) {
2561 vport->num_disc_nodes = 0;
2562 /* go thru NPR list, issue ELS PLOGIs */
2563 if (vport->fc_npr_cnt)
2564 lpfc_els_disc_plogi(vport);
2565 if (!vport->num_disc_nodes) {
2566 spin_lock_irq(shost->host_lock);
2567 vport->fc_flag &= ~FC_NDISC_ACTIVE;
2568 spin_unlock_irq(shost->host_lock);
2569 lpfc_can_disctmo(vport);
2570 lpfc_end_rscn(vport);
2571 }
2572 }
2573 vport->port_state = LPFC_VPORT_READY;
2574 } else
2575 lpfc_rscn_disc(vport);
2576 }
2577
2578 /**
2579 * lpfc_more_adisc - Issue more adisc as needed
2580 * @vport: pointer to a host virtual N_Port data structure.
2581 *
2582 * This routine determines whether there are more ndlps on a @vport
2583 * node list need to have Address Discover (ADISC) issued. If so, it will
2584 * invoke the lpfc_els_disc_adisc() routine to issue ADISC on the @vport's
2585 * remaining nodes which need to have ADISC sent.
2586 **/
2587 void
lpfc_more_adisc(struct lpfc_vport * vport)2588 lpfc_more_adisc(struct lpfc_vport *vport)
2589 {
2590 if (vport->num_disc_nodes)
2591 vport->num_disc_nodes--;
2592 /* Continue discovery with <num_disc_nodes> ADISCs to go */
2593 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
2594 "0210 Continue discovery with %d ADISCs to go "
2595 "Data: x%x x%x x%x\n",
2596 vport->num_disc_nodes, vport->fc_adisc_cnt,
2597 vport->fc_flag, vport->port_state);
2598 /* Check to see if there are more ADISCs to be sent */
2599 if (vport->fc_flag & FC_NLP_MORE) {
2600 lpfc_set_disctmo(vport);
2601 /* go thru NPR nodes and issue any remaining ELS ADISCs */
2602 lpfc_els_disc_adisc(vport);
2603 }
2604 if (!vport->num_disc_nodes)
2605 lpfc_adisc_done(vport);
2606 return;
2607 }
2608
2609 /**
2610 * lpfc_cmpl_els_adisc - Completion callback function for adisc
2611 * @phba: pointer to lpfc hba data structure.
2612 * @cmdiocb: pointer to lpfc command iocb data structure.
2613 * @rspiocb: pointer to lpfc response iocb data structure.
2614 *
2615 * This routine is the completion function for issuing the Address Discover
2616 * (ADISC) command. It first checks to see whether link went down during
2617 * the discovery process. If so, the node will be marked as node port
2618 * recovery for issuing discover IOCB by the link attention handler and
2619 * exit. Otherwise, the response status is checked. If error was reported
2620 * in the response status, the ADISC command shall be retried by invoking
2621 * the lpfc_els_retry() routine. Otherwise, if no error was reported in
2622 * the response status, the state machine is invoked to set transition
2623 * with respect to NLP_EVT_CMPL_ADISC event.
2624 **/
2625 static void
lpfc_cmpl_els_adisc(struct lpfc_hba * phba,struct lpfc_iocbq * cmdiocb,struct lpfc_iocbq * rspiocb)2626 lpfc_cmpl_els_adisc(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
2627 struct lpfc_iocbq *rspiocb)
2628 {
2629 struct lpfc_vport *vport = cmdiocb->vport;
2630 IOCB_t *irsp;
2631 struct lpfc_nodelist *ndlp;
2632 int disc;
2633
2634 /* we pass cmdiocb to state machine which needs rspiocb as well */
2635 cmdiocb->context_un.rsp_iocb = rspiocb;
2636
2637 irsp = &(rspiocb->iocb);
2638 ndlp = (struct lpfc_nodelist *) cmdiocb->context1;
2639
2640 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
2641 "ADISC cmpl: status:x%x/x%x did:x%x",
2642 irsp->ulpStatus, irsp->un.ulpWord[4],
2643 ndlp->nlp_DID);
2644
2645 /* Since ndlp can be freed in the disc state machine, note if this node
2646 * is being used during discovery.
2647 */
2648 spin_lock_irq(&ndlp->lock);
2649 disc = (ndlp->nlp_flag & NLP_NPR_2B_DISC);
2650 ndlp->nlp_flag &= ~(NLP_ADISC_SND | NLP_NPR_2B_DISC);
2651 spin_unlock_irq(&ndlp->lock);
2652 /* ADISC completes to NPort <nlp_DID> */
2653 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
2654 "0104 ADISC completes to NPort x%x "
2655 "Data: x%x x%x x%x x%x x%x\n",
2656 ndlp->nlp_DID, irsp->ulpStatus, irsp->un.ulpWord[4],
2657 irsp->ulpTimeout, disc, vport->num_disc_nodes);
2658 /* Check to see if link went down during discovery */
2659 if (lpfc_els_chk_latt(vport)) {
2660 spin_lock_irq(&ndlp->lock);
2661 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
2662 spin_unlock_irq(&ndlp->lock);
2663 goto out;
2664 }
2665
2666 if (irsp->ulpStatus) {
2667 /* Check for retry */
2668 if (lpfc_els_retry(phba, cmdiocb, rspiocb)) {
2669 /* ELS command is being retried */
2670 if (disc) {
2671 spin_lock_irq(&ndlp->lock);
2672 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
2673 spin_unlock_irq(&ndlp->lock);
2674 lpfc_set_disctmo(vport);
2675 }
2676 goto out;
2677 }
2678 /* ADISC failed */
2679 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
2680 "2755 ADISC failure DID:%06X Status:x%x/x%x\n",
2681 ndlp->nlp_DID, irsp->ulpStatus,
2682 irsp->un.ulpWord[4]);
2683 /* Do not call DSM for lpfc_els_abort'ed ELS cmds */
2684 if (lpfc_error_lost_link(irsp))
2685 goto check_adisc;
2686 else
2687 lpfc_disc_state_machine(vport, ndlp, cmdiocb,
2688 NLP_EVT_CMPL_ADISC);
2689
2690 /* As long as this node is not registered with the SCSI or NVMe
2691 * transport, it is no longer an active node. Otherwise
2692 * devloss handles the final cleanup.
2693 */
2694 if (!(ndlp->fc4_xpt_flags & (SCSI_XPT_REGD | NVME_XPT_REGD))) {
2695 spin_lock_irq(&ndlp->lock);
2696 ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
2697 spin_unlock_irq(&ndlp->lock);
2698 lpfc_disc_state_machine(vport, ndlp, cmdiocb,
2699 NLP_EVT_DEVICE_RM);
2700 }
2701 } else
2702 /* Good status, call state machine */
2703 lpfc_disc_state_machine(vport, ndlp, cmdiocb,
2704 NLP_EVT_CMPL_ADISC);
2705
2706 check_adisc:
2707 /* Check to see if there are more ADISCs to be sent */
2708 if (disc && vport->num_disc_nodes)
2709 lpfc_more_adisc(vport);
2710 out:
2711 lpfc_els_free_iocb(phba, cmdiocb);
2712 lpfc_nlp_put(ndlp);
2713 return;
2714 }
2715
2716 /**
2717 * lpfc_issue_els_adisc - Issue an address discover iocb to an node on a vport
2718 * @vport: pointer to a virtual N_Port data structure.
2719 * @ndlp: pointer to a node-list data structure.
2720 * @retry: number of retries to the command IOCB.
2721 *
2722 * This routine issues an Address Discover (ADISC) for an @ndlp on a
2723 * @vport. It prepares the payload of the ADISC ELS command, updates the
2724 * and states of the ndlp, and invokes the lpfc_sli_issue_iocb() routine
2725 * to issue the ADISC ELS command.
2726 *
2727 * Note that the ndlp reference count will be incremented by 1 for holding the
2728 * ndlp and the reference to ndlp will be stored into the context1 field of
2729 * the IOCB for the completion callback function to the ADISC ELS command.
2730 *
2731 * Return code
2732 * 0 - successfully issued adisc
2733 * 1 - failed to issue adisc
2734 **/
2735 int
lpfc_issue_els_adisc(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,uint8_t retry)2736 lpfc_issue_els_adisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2737 uint8_t retry)
2738 {
2739 int rc = 0;
2740 struct lpfc_hba *phba = vport->phba;
2741 ADISC *ap;
2742 struct lpfc_iocbq *elsiocb;
2743 uint8_t *pcmd;
2744 uint16_t cmdsize;
2745
2746 cmdsize = (sizeof(uint32_t) + sizeof(ADISC));
2747 elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp,
2748 ndlp->nlp_DID, ELS_CMD_ADISC);
2749 if (!elsiocb)
2750 return 1;
2751
2752 pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
2753
2754 /* For ADISC request, remainder of payload is service parameters */
2755 *((uint32_t *) (pcmd)) = ELS_CMD_ADISC;
2756 pcmd += sizeof(uint32_t);
2757
2758 /* Fill in ADISC payload */
2759 ap = (ADISC *) pcmd;
2760 ap->hardAL_PA = phba->fc_pref_ALPA;
2761 memcpy(&ap->portName, &vport->fc_portname, sizeof(struct lpfc_name));
2762 memcpy(&ap->nodeName, &vport->fc_nodename, sizeof(struct lpfc_name));
2763 ap->DID = be32_to_cpu(vport->fc_myDID);
2764
2765 phba->fc_stat.elsXmitADISC++;
2766 elsiocb->iocb_cmpl = lpfc_cmpl_els_adisc;
2767 spin_lock_irq(&ndlp->lock);
2768 ndlp->nlp_flag |= NLP_ADISC_SND;
2769 spin_unlock_irq(&ndlp->lock);
2770 elsiocb->context1 = lpfc_nlp_get(ndlp);
2771 if (!elsiocb->context1) {
2772 lpfc_els_free_iocb(phba, elsiocb);
2773 goto err;
2774 }
2775
2776 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
2777 "Issue ADISC: did:x%x refcnt %d",
2778 ndlp->nlp_DID, kref_read(&ndlp->kref), 0);
2779 rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
2780 if (rc == IOCB_ERROR) {
2781 lpfc_els_free_iocb(phba, elsiocb);
2782 lpfc_nlp_put(ndlp);
2783 goto err;
2784 }
2785
2786 return 0;
2787
2788 err:
2789 spin_lock_irq(&ndlp->lock);
2790 ndlp->nlp_flag &= ~NLP_ADISC_SND;
2791 spin_unlock_irq(&ndlp->lock);
2792 return 1;
2793 }
2794
2795 /**
2796 * lpfc_cmpl_els_logo - Completion callback function for logo
2797 * @phba: pointer to lpfc hba data structure.
2798 * @cmdiocb: pointer to lpfc command iocb data structure.
2799 * @rspiocb: pointer to lpfc response iocb data structure.
2800 *
2801 * This routine is the completion function for issuing the ELS Logout (LOGO)
2802 * command. If no error status was reported from the LOGO response, the
2803 * state machine of the associated ndlp shall be invoked for transition with
2804 * respect to NLP_EVT_CMPL_LOGO event.
2805 **/
2806 static void
lpfc_cmpl_els_logo(struct lpfc_hba * phba,struct lpfc_iocbq * cmdiocb,struct lpfc_iocbq * rspiocb)2807 lpfc_cmpl_els_logo(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
2808 struct lpfc_iocbq *rspiocb)
2809 {
2810 struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) cmdiocb->context1;
2811 struct lpfc_vport *vport = ndlp->vport;
2812 IOCB_t *irsp;
2813 unsigned long flags;
2814 uint32_t skip_recovery = 0;
2815 int wake_up_waiter = 0;
2816
2817 /* we pass cmdiocb to state machine which needs rspiocb as well */
2818 cmdiocb->context_un.rsp_iocb = rspiocb;
2819
2820 irsp = &(rspiocb->iocb);
2821 spin_lock_irq(&ndlp->lock);
2822 ndlp->nlp_flag &= ~NLP_LOGO_SND;
2823 if (ndlp->upcall_flags & NLP_WAIT_FOR_LOGO) {
2824 wake_up_waiter = 1;
2825 ndlp->upcall_flags &= ~NLP_WAIT_FOR_LOGO;
2826 }
2827 spin_unlock_irq(&ndlp->lock);
2828
2829 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
2830 "LOGO cmpl: status:x%x/x%x did:x%x",
2831 irsp->ulpStatus, irsp->un.ulpWord[4],
2832 ndlp->nlp_DID);
2833
2834 /* LOGO completes to NPort <nlp_DID> */
2835 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
2836 "0105 LOGO completes to NPort x%x "
2837 "refcnt %d nflags x%x Data: x%x x%x x%x x%x\n",
2838 ndlp->nlp_DID, kref_read(&ndlp->kref), ndlp->nlp_flag,
2839 irsp->ulpStatus, irsp->un.ulpWord[4],
2840 irsp->ulpTimeout, vport->num_disc_nodes);
2841
2842 if (lpfc_els_chk_latt(vport)) {
2843 skip_recovery = 1;
2844 goto out;
2845 }
2846
2847 /* The LOGO will not be retried on failure. A LOGO was
2848 * issued to the remote rport and a ACC or RJT or no Answer are
2849 * all acceptable. Note the failure and move forward with
2850 * discovery. The PLOGI will retry.
2851 */
2852 if (irsp->ulpStatus) {
2853 /* LOGO failed */
2854 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
2855 "2756 LOGO failure, No Retry DID:%06X Status:x%x/x%x\n",
2856 ndlp->nlp_DID, irsp->ulpStatus,
2857 irsp->un.ulpWord[4]);
2858 /* Do not call DSM for lpfc_els_abort'ed ELS cmds */
2859 if (lpfc_error_lost_link(irsp)) {
2860 skip_recovery = 1;
2861 goto out;
2862 }
2863 }
2864
2865 /* Call state machine. This will unregister the rpi if needed. */
2866 lpfc_disc_state_machine(vport, ndlp, cmdiocb, NLP_EVT_CMPL_LOGO);
2867
2868 /* The driver sets this flag for an NPIV instance that doesn't want to
2869 * log into the remote port.
2870 */
2871 if (ndlp->nlp_flag & NLP_TARGET_REMOVE) {
2872 lpfc_disc_state_machine(vport, ndlp, cmdiocb,
2873 NLP_EVT_DEVICE_RM);
2874 lpfc_els_free_iocb(phba, cmdiocb);
2875 lpfc_nlp_put(ndlp);
2876
2877 /* Presume the node was released. */
2878 return;
2879 }
2880
2881 out:
2882 /* Driver is done with the IO. */
2883 lpfc_els_free_iocb(phba, cmdiocb);
2884 lpfc_nlp_put(ndlp);
2885
2886 /* At this point, the LOGO processing is complete. NOTE: For a
2887 * pt2pt topology, we are assuming the NPortID will only change
2888 * on link up processing. For a LOGO / PLOGI initiated by the
2889 * Initiator, we are assuming the NPortID is not going to change.
2890 */
2891
2892 if (wake_up_waiter && ndlp->logo_waitq)
2893 wake_up(ndlp->logo_waitq);
2894 /*
2895 * If the node is a target, the handling attempts to recover the port.
2896 * For any other port type, the rpi is unregistered as an implicit
2897 * LOGO.
2898 */
2899 if (ndlp->nlp_type & (NLP_FCP_TARGET | NLP_NVME_TARGET) &&
2900 skip_recovery == 0) {
2901 lpfc_cancel_retry_delay_tmo(vport, ndlp);
2902 spin_lock_irqsave(&ndlp->lock, flags);
2903 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
2904 spin_unlock_irqrestore(&ndlp->lock, flags);
2905
2906 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
2907 "3187 LOGO completes to NPort x%x: Start "
2908 "Recovery Data: x%x x%x x%x x%x\n",
2909 ndlp->nlp_DID, irsp->ulpStatus,
2910 irsp->un.ulpWord[4], irsp->ulpTimeout,
2911 vport->num_disc_nodes);
2912 lpfc_disc_start(vport);
2913 return;
2914 }
2915
2916 /* Cleanup path for failed REG_RPI handling. If REG_RPI fails, the
2917 * driver sends a LOGO to the rport to cleanup. For fabric and
2918 * initiator ports cleanup the node as long as it the node is not
2919 * register with the transport.
2920 */
2921 if (!(ndlp->fc4_xpt_flags & (SCSI_XPT_REGD | NVME_XPT_REGD))) {
2922 spin_lock_irq(&ndlp->lock);
2923 ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
2924 spin_unlock_irq(&ndlp->lock);
2925 lpfc_disc_state_machine(vport, ndlp, cmdiocb,
2926 NLP_EVT_DEVICE_RM);
2927 }
2928 }
2929
2930 /**
2931 * lpfc_issue_els_logo - Issue a logo to an node on a vport
2932 * @vport: pointer to a virtual N_Port data structure.
2933 * @ndlp: pointer to a node-list data structure.
2934 * @retry: number of retries to the command IOCB.
2935 *
2936 * This routine constructs and issues an ELS Logout (LOGO) iocb command
2937 * to a remote node, referred by an @ndlp on a @vport. It constructs the
2938 * payload of the IOCB, properly sets up the @ndlp state, and invokes the
2939 * lpfc_sli_issue_iocb() routine to send out the LOGO ELS command.
2940 *
2941 * Note that the ndlp reference count will be incremented by 1 for holding the
2942 * ndlp and the reference to ndlp will be stored into the context1 field of
2943 * the IOCB for the completion callback function to the LOGO ELS command.
2944 *
2945 * Callers of this routine are expected to unregister the RPI first
2946 *
2947 * Return code
2948 * 0 - successfully issued logo
2949 * 1 - failed to issue logo
2950 **/
2951 int
lpfc_issue_els_logo(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,uint8_t retry)2952 lpfc_issue_els_logo(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2953 uint8_t retry)
2954 {
2955 struct lpfc_hba *phba = vport->phba;
2956 struct lpfc_iocbq *elsiocb;
2957 uint8_t *pcmd;
2958 uint16_t cmdsize;
2959 int rc;
2960
2961 spin_lock_irq(&ndlp->lock);
2962 if (ndlp->nlp_flag & NLP_LOGO_SND) {
2963 spin_unlock_irq(&ndlp->lock);
2964 return 0;
2965 }
2966 spin_unlock_irq(&ndlp->lock);
2967
2968 cmdsize = (2 * sizeof(uint32_t)) + sizeof(struct lpfc_name);
2969 elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp,
2970 ndlp->nlp_DID, ELS_CMD_LOGO);
2971 if (!elsiocb)
2972 return 1;
2973
2974 pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
2975 *((uint32_t *) (pcmd)) = ELS_CMD_LOGO;
2976 pcmd += sizeof(uint32_t);
2977
2978 /* Fill in LOGO payload */
2979 *((uint32_t *) (pcmd)) = be32_to_cpu(vport->fc_myDID);
2980 pcmd += sizeof(uint32_t);
2981 memcpy(pcmd, &vport->fc_portname, sizeof(struct lpfc_name));
2982
2983 phba->fc_stat.elsXmitLOGO++;
2984 elsiocb->iocb_cmpl = lpfc_cmpl_els_logo;
2985 spin_lock_irq(&ndlp->lock);
2986 ndlp->nlp_flag |= NLP_LOGO_SND;
2987 ndlp->nlp_flag &= ~NLP_ISSUE_LOGO;
2988 spin_unlock_irq(&ndlp->lock);
2989 elsiocb->context1 = lpfc_nlp_get(ndlp);
2990 if (!elsiocb->context1) {
2991 lpfc_els_free_iocb(phba, elsiocb);
2992 goto err;
2993 }
2994
2995 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
2996 "Issue LOGO: did:x%x refcnt %d",
2997 ndlp->nlp_DID, kref_read(&ndlp->kref), 0);
2998 rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
2999 if (rc == IOCB_ERROR) {
3000 lpfc_els_free_iocb(phba, elsiocb);
3001 lpfc_nlp_put(ndlp);
3002 goto err;
3003 }
3004
3005 spin_lock_irq(&ndlp->lock);
3006 ndlp->nlp_prev_state = ndlp->nlp_state;
3007 spin_unlock_irq(&ndlp->lock);
3008 lpfc_nlp_set_state(vport, ndlp, NLP_STE_LOGO_ISSUE);
3009 return 0;
3010
3011 err:
3012 spin_lock_irq(&ndlp->lock);
3013 ndlp->nlp_flag &= ~NLP_LOGO_SND;
3014 spin_unlock_irq(&ndlp->lock);
3015 return 1;
3016 }
3017
3018 /**
3019 * lpfc_cmpl_els_cmd - Completion callback function for generic els command
3020 * @phba: pointer to lpfc hba data structure.
3021 * @cmdiocb: pointer to lpfc command iocb data structure.
3022 * @rspiocb: pointer to lpfc response iocb data structure.
3023 *
3024 * This routine is a generic completion callback function for ELS commands.
3025 * Specifically, it is the callback function which does not need to perform
3026 * any command specific operations. It is currently used by the ELS command
3027 * issuing routines for RSCN, lpfc_issue_els_rscn, and the ELS Fibre Channel
3028 * Address Resolution Protocol Response (FARPR) routine, lpfc_issue_els_farpr().
3029 * Other than certain debug loggings, this callback function simply invokes the
3030 * lpfc_els_chk_latt() routine to check whether link went down during the
3031 * discovery process.
3032 **/
3033 static void
lpfc_cmpl_els_cmd(struct lpfc_hba * phba,struct lpfc_iocbq * cmdiocb,struct lpfc_iocbq * rspiocb)3034 lpfc_cmpl_els_cmd(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
3035 struct lpfc_iocbq *rspiocb)
3036 {
3037 struct lpfc_vport *vport = cmdiocb->vport;
3038 struct lpfc_nodelist *free_ndlp;
3039 IOCB_t *irsp;
3040
3041 irsp = &rspiocb->iocb;
3042
3043 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
3044 "ELS cmd cmpl: status:x%x/x%x did:x%x",
3045 irsp->ulpStatus, irsp->un.ulpWord[4],
3046 irsp->un.elsreq64.remoteID);
3047
3048 /* ELS cmd tag <ulpIoTag> completes */
3049 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
3050 "0106 ELS cmd tag x%x completes Data: x%x x%x x%x\n",
3051 irsp->ulpIoTag, irsp->ulpStatus,
3052 irsp->un.ulpWord[4], irsp->ulpTimeout);
3053
3054 /* Check to see if link went down during discovery */
3055 lpfc_els_chk_latt(vport);
3056
3057 free_ndlp = (struct lpfc_nodelist *)cmdiocb->context1;
3058
3059 lpfc_els_free_iocb(phba, cmdiocb);
3060 lpfc_nlp_put(free_ndlp);
3061 }
3062
3063 /**
3064 * lpfc_cmpl_els_disc_cmd - Completion callback function for Discovery ELS cmd
3065 * @phba: pointer to lpfc hba data structure.
3066 * @cmdiocb: pointer to lpfc command iocb data structure.
3067 * @rspiocb: pointer to lpfc response iocb data structure.
3068 *
3069 * This routine is a generic completion callback function for Discovery ELS cmd.
3070 * Currently used by the ELS command issuing routines for the ELS State Change
3071 * Request (SCR), lpfc_issue_els_scr() and the ELS RDF, lpfc_issue_els_rdf().
3072 * These commands will be retried once only for ELS timeout errors.
3073 **/
3074 static void
lpfc_cmpl_els_disc_cmd(struct lpfc_hba * phba,struct lpfc_iocbq * cmdiocb,struct lpfc_iocbq * rspiocb)3075 lpfc_cmpl_els_disc_cmd(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
3076 struct lpfc_iocbq *rspiocb)
3077 {
3078 struct lpfc_vport *vport = cmdiocb->vport;
3079 IOCB_t *irsp;
3080 struct lpfc_els_rdf_rsp *prdf;
3081 struct lpfc_dmabuf *pcmd, *prsp;
3082 u32 *pdata;
3083 u32 cmd;
3084 struct lpfc_nodelist *ndlp = cmdiocb->context1;
3085
3086 irsp = &rspiocb->iocb;
3087
3088 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
3089 "ELS cmd cmpl: status:x%x/x%x did:x%x",
3090 irsp->ulpStatus, irsp->un.ulpWord[4],
3091 irsp->un.elsreq64.remoteID);
3092 /* ELS cmd tag <ulpIoTag> completes */
3093 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
3094 "0217 ELS cmd tag x%x completes Data: x%x x%x x%x "
3095 "x%x\n",
3096 irsp->ulpIoTag, irsp->ulpStatus,
3097 irsp->un.ulpWord[4], irsp->ulpTimeout,
3098 cmdiocb->retry);
3099
3100 pcmd = (struct lpfc_dmabuf *)cmdiocb->context2;
3101 if (!pcmd)
3102 goto out;
3103
3104 pdata = (u32 *)pcmd->virt;
3105 if (!pdata)
3106 goto out;
3107 cmd = *pdata;
3108
3109 /* Only 1 retry for ELS Timeout only */
3110 if (irsp->ulpStatus == IOSTAT_LOCAL_REJECT &&
3111 ((irsp->un.ulpWord[4] & IOERR_PARAM_MASK) ==
3112 IOERR_SEQUENCE_TIMEOUT)) {
3113 cmdiocb->retry++;
3114 if (cmdiocb->retry <= 1) {
3115 switch (cmd) {
3116 case ELS_CMD_SCR:
3117 lpfc_issue_els_scr(vport, cmdiocb->retry);
3118 break;
3119 case ELS_CMD_RDF:
3120 cmdiocb->context1 = NULL; /* save ndlp refcnt */
3121 lpfc_issue_els_rdf(vport, cmdiocb->retry);
3122 break;
3123 }
3124 goto out;
3125 }
3126 phba->fc_stat.elsRetryExceeded++;
3127 }
3128 if (irsp->ulpStatus) {
3129 /* ELS discovery cmd completes with error */
3130 lpfc_printf_vlog(vport, KERN_WARNING, LOG_ELS,
3131 "4203 ELS cmd x%x error: x%x x%X\n", cmd,
3132 irsp->ulpStatus, irsp->un.ulpWord[4]);
3133 goto out;
3134 }
3135
3136 /* The RDF response doesn't have any impact on the running driver
3137 * but the notification descriptors are dumped here for support.
3138 */
3139 if (cmd == ELS_CMD_RDF) {
3140 int i;
3141
3142 prsp = list_get_first(&pcmd->list, struct lpfc_dmabuf, list);
3143 if (!prsp)
3144 goto out;
3145
3146 prdf = (struct lpfc_els_rdf_rsp *)prsp->virt;
3147 if (!prdf)
3148 goto out;
3149
3150 for (i = 0; i < ELS_RDF_REG_TAG_CNT &&
3151 i < be32_to_cpu(prdf->reg_d1.reg_desc.count); i++)
3152 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
3153 "4677 Fabric RDF Notification Grant Data: "
3154 "0x%08x\n",
3155 be32_to_cpu(
3156 prdf->reg_d1.desc_tags[i]));
3157 }
3158
3159 out:
3160 /* Check to see if link went down during discovery */
3161 lpfc_els_chk_latt(vport);
3162 lpfc_els_free_iocb(phba, cmdiocb);
3163 lpfc_nlp_put(ndlp);
3164 return;
3165 }
3166
3167 /**
3168 * lpfc_issue_els_scr - Issue a scr to an node on a vport
3169 * @vport: pointer to a host virtual N_Port data structure.
3170 * @retry: retry counter for the command IOCB.
3171 *
3172 * This routine issues a State Change Request (SCR) to a fabric node
3173 * on a @vport. The remote node is Fabric Controller (0xfffffd). It
3174 * first search the @vport node list to find the matching ndlp. If no such
3175 * ndlp is found, a new ndlp shall be created for this (SCR) purpose. An
3176 * IOCB is allocated, payload prepared, and the lpfc_sli_issue_iocb()
3177 * routine is invoked to send the SCR IOCB.
3178 *
3179 * Note that the ndlp reference count will be incremented by 1 for holding the
3180 * ndlp and the reference to ndlp will be stored into the context1 field of
3181 * the IOCB for the completion callback function to the SCR ELS command.
3182 *
3183 * Return code
3184 * 0 - Successfully issued scr command
3185 * 1 - Failed to issue scr command
3186 **/
3187 int
lpfc_issue_els_scr(struct lpfc_vport * vport,uint8_t retry)3188 lpfc_issue_els_scr(struct lpfc_vport *vport, uint8_t retry)
3189 {
3190 int rc = 0;
3191 struct lpfc_hba *phba = vport->phba;
3192 struct lpfc_iocbq *elsiocb;
3193 uint8_t *pcmd;
3194 uint16_t cmdsize;
3195 struct lpfc_nodelist *ndlp;
3196
3197 cmdsize = (sizeof(uint32_t) + sizeof(SCR));
3198
3199 ndlp = lpfc_findnode_did(vport, Fabric_Cntl_DID);
3200 if (!ndlp) {
3201 ndlp = lpfc_nlp_init(vport, Fabric_Cntl_DID);
3202 if (!ndlp)
3203 return 1;
3204 lpfc_enqueue_node(vport, ndlp);
3205 }
3206
3207 elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp,
3208 ndlp->nlp_DID, ELS_CMD_SCR);
3209
3210 if (!elsiocb)
3211 return 1;
3212
3213 pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
3214
3215 *((uint32_t *) (pcmd)) = ELS_CMD_SCR;
3216 pcmd += sizeof(uint32_t);
3217
3218 /* For SCR, remainder of payload is SCR parameter page */
3219 memset(pcmd, 0, sizeof(SCR));
3220 ((SCR *) pcmd)->Function = SCR_FUNC_FULL;
3221
3222 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
3223 "Issue SCR: did:x%x",
3224 ndlp->nlp_DID, 0, 0);
3225
3226 phba->fc_stat.elsXmitSCR++;
3227 elsiocb->iocb_cmpl = lpfc_cmpl_els_disc_cmd;
3228 elsiocb->context1 = lpfc_nlp_get(ndlp);
3229 if (!elsiocb->context1) {
3230 lpfc_els_free_iocb(phba, elsiocb);
3231 return 1;
3232 }
3233
3234 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
3235 "Issue SCR: did:x%x refcnt %d",
3236 ndlp->nlp_DID, kref_read(&ndlp->kref), 0);
3237
3238 rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
3239 if (rc == IOCB_ERROR) {
3240 lpfc_els_free_iocb(phba, elsiocb);
3241 lpfc_nlp_put(ndlp);
3242 return 1;
3243 }
3244
3245 /* Keep the ndlp just in case RDF is being sent */
3246 return 0;
3247 }
3248
3249 /**
3250 * lpfc_issue_els_rscn - Issue an RSCN to the Fabric Controller (Fabric)
3251 * or the other nport (pt2pt).
3252 * @vport: pointer to a host virtual N_Port data structure.
3253 * @retry: number of retries to the command IOCB.
3254 *
3255 * This routine issues a RSCN to the Fabric Controller (DID 0xFFFFFD)
3256 * when connected to a fabric, or to the remote port when connected
3257 * in point-to-point mode. When sent to the Fabric Controller, it will
3258 * replay the RSCN to registered recipients.
3259 *
3260 * Note that the ndlp reference count will be incremented by 1 for holding the
3261 * ndlp and the reference to ndlp will be stored into the context1 field of
3262 * the IOCB for the completion callback function to the RSCN ELS command.
3263 *
3264 * Return code
3265 * 0 - Successfully issued RSCN command
3266 * 1 - Failed to issue RSCN command
3267 **/
3268 int
lpfc_issue_els_rscn(struct lpfc_vport * vport,uint8_t retry)3269 lpfc_issue_els_rscn(struct lpfc_vport *vport, uint8_t retry)
3270 {
3271 int rc = 0;
3272 struct lpfc_hba *phba = vport->phba;
3273 struct lpfc_iocbq *elsiocb;
3274 struct lpfc_nodelist *ndlp;
3275 struct {
3276 struct fc_els_rscn rscn;
3277 struct fc_els_rscn_page portid;
3278 } *event;
3279 uint32_t nportid;
3280 uint16_t cmdsize = sizeof(*event);
3281
3282 /* Not supported for private loop */
3283 if (phba->fc_topology == LPFC_TOPOLOGY_LOOP &&
3284 !(vport->fc_flag & FC_PUBLIC_LOOP))
3285 return 1;
3286
3287 if (vport->fc_flag & FC_PT2PT) {
3288 /* find any mapped nport - that would be the other nport */
3289 ndlp = lpfc_findnode_mapped(vport);
3290 if (!ndlp)
3291 return 1;
3292 } else {
3293 nportid = FC_FID_FCTRL;
3294 /* find the fabric controller node */
3295 ndlp = lpfc_findnode_did(vport, nportid);
3296 if (!ndlp) {
3297 /* if one didn't exist, make one */
3298 ndlp = lpfc_nlp_init(vport, nportid);
3299 if (!ndlp)
3300 return 1;
3301 lpfc_enqueue_node(vport, ndlp);
3302 }
3303 }
3304
3305 elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp,
3306 ndlp->nlp_DID, ELS_CMD_RSCN_XMT);
3307
3308 if (!elsiocb)
3309 return 1;
3310
3311 event = ((struct lpfc_dmabuf *)elsiocb->context2)->virt;
3312
3313 event->rscn.rscn_cmd = ELS_RSCN;
3314 event->rscn.rscn_page_len = sizeof(struct fc_els_rscn_page);
3315 event->rscn.rscn_plen = cpu_to_be16(cmdsize);
3316
3317 nportid = vport->fc_myDID;
3318 /* appears that page flags must be 0 for fabric to broadcast RSCN */
3319 event->portid.rscn_page_flags = 0;
3320 event->portid.rscn_fid[0] = (nportid & 0x00FF0000) >> 16;
3321 event->portid.rscn_fid[1] = (nportid & 0x0000FF00) >> 8;
3322 event->portid.rscn_fid[2] = nportid & 0x000000FF;
3323
3324 phba->fc_stat.elsXmitRSCN++;
3325 elsiocb->iocb_cmpl = lpfc_cmpl_els_cmd;
3326 elsiocb->context1 = lpfc_nlp_get(ndlp);
3327 if (!elsiocb->context1) {
3328 lpfc_els_free_iocb(phba, elsiocb);
3329 return 1;
3330 }
3331
3332 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
3333 "Issue RSCN: did:x%x",
3334 ndlp->nlp_DID, 0, 0);
3335
3336 rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
3337 if (rc == IOCB_ERROR) {
3338 lpfc_els_free_iocb(phba, elsiocb);
3339 lpfc_nlp_put(ndlp);
3340 return 1;
3341 }
3342
3343 /* This will cause the callback-function lpfc_cmpl_els_cmd to
3344 * trigger the release of node.
3345 */
3346 if (!(vport->fc_flag & FC_PT2PT))
3347 lpfc_nlp_put(ndlp);
3348 return 0;
3349 }
3350
3351 /**
3352 * lpfc_issue_els_farpr - Issue a farp to an node on a vport
3353 * @vport: pointer to a host virtual N_Port data structure.
3354 * @nportid: N_Port identifier to the remote node.
3355 * @retry: number of retries to the command IOCB.
3356 *
3357 * This routine issues a Fibre Channel Address Resolution Response
3358 * (FARPR) to a node on a vport. The remote node N_Port identifier (@nportid)
3359 * is passed into the function. It first search the @vport node list to find
3360 * the matching ndlp. If no such ndlp is found, a new ndlp shall be created
3361 * for this (FARPR) purpose. An IOCB is allocated, payload prepared, and the
3362 * lpfc_sli_issue_iocb() routine is invoked to send the FARPR ELS command.
3363 *
3364 * Note that the ndlp reference count will be incremented by 1 for holding the
3365 * ndlp and the reference to ndlp will be stored into the context1 field of
3366 * the IOCB for the completion callback function to the FARPR ELS command.
3367 *
3368 * Return code
3369 * 0 - Successfully issued farpr command
3370 * 1 - Failed to issue farpr command
3371 **/
3372 static int
lpfc_issue_els_farpr(struct lpfc_vport * vport,uint32_t nportid,uint8_t retry)3373 lpfc_issue_els_farpr(struct lpfc_vport *vport, uint32_t nportid, uint8_t retry)
3374 {
3375 int rc = 0;
3376 struct lpfc_hba *phba = vport->phba;
3377 struct lpfc_iocbq *elsiocb;
3378 FARP *fp;
3379 uint8_t *pcmd;
3380 uint32_t *lp;
3381 uint16_t cmdsize;
3382 struct lpfc_nodelist *ondlp;
3383 struct lpfc_nodelist *ndlp;
3384
3385 cmdsize = (sizeof(uint32_t) + sizeof(FARP));
3386
3387 ndlp = lpfc_findnode_did(vport, nportid);
3388 if (!ndlp) {
3389 ndlp = lpfc_nlp_init(vport, nportid);
3390 if (!ndlp)
3391 return 1;
3392 lpfc_enqueue_node(vport, ndlp);
3393 }
3394
3395 elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp,
3396 ndlp->nlp_DID, ELS_CMD_RNID);
3397 if (!elsiocb)
3398 return 1;
3399
3400 pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
3401
3402 *((uint32_t *) (pcmd)) = ELS_CMD_FARPR;
3403 pcmd += sizeof(uint32_t);
3404
3405 /* Fill in FARPR payload */
3406 fp = (FARP *) (pcmd);
3407 memset(fp, 0, sizeof(FARP));
3408 lp = (uint32_t *) pcmd;
3409 *lp++ = be32_to_cpu(nportid);
3410 *lp++ = be32_to_cpu(vport->fc_myDID);
3411 fp->Rflags = 0;
3412 fp->Mflags = (FARP_MATCH_PORT | FARP_MATCH_NODE);
3413
3414 memcpy(&fp->RportName, &vport->fc_portname, sizeof(struct lpfc_name));
3415 memcpy(&fp->RnodeName, &vport->fc_nodename, sizeof(struct lpfc_name));
3416 ondlp = lpfc_findnode_did(vport, nportid);
3417 if (ondlp) {
3418 memcpy(&fp->OportName, &ondlp->nlp_portname,
3419 sizeof(struct lpfc_name));
3420 memcpy(&fp->OnodeName, &ondlp->nlp_nodename,
3421 sizeof(struct lpfc_name));
3422 }
3423
3424 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
3425 "Issue FARPR: did:x%x",
3426 ndlp->nlp_DID, 0, 0);
3427
3428 phba->fc_stat.elsXmitFARPR++;
3429 elsiocb->iocb_cmpl = lpfc_cmpl_els_cmd;
3430 elsiocb->context1 = lpfc_nlp_get(ndlp);
3431 if (!elsiocb->context1) {
3432 lpfc_els_free_iocb(phba, elsiocb);
3433 return 1;
3434 }
3435
3436 rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
3437 if (rc == IOCB_ERROR) {
3438 /* The additional lpfc_nlp_put will cause the following
3439 * lpfc_els_free_iocb routine to trigger the release of
3440 * the node.
3441 */
3442 lpfc_els_free_iocb(phba, elsiocb);
3443 lpfc_nlp_put(ndlp);
3444 return 1;
3445 }
3446 /* This will cause the callback-function lpfc_cmpl_els_cmd to
3447 * trigger the release of the node.
3448 */
3449 /* Don't release reference count as RDF is likely outstanding */
3450 return 0;
3451 }
3452
3453 /**
3454 * lpfc_issue_els_rdf - Register for diagnostic functions from the fabric.
3455 * @vport: pointer to a host virtual N_Port data structure.
3456 * @retry: retry counter for the command IOCB.
3457 *
3458 * This routine issues an ELS RDF to the Fabric Controller to register
3459 * for diagnostic functions.
3460 *
3461 * Note that the ndlp reference count will be incremented by 1 for holding the
3462 * ndlp and the reference to ndlp will be stored into the context1 field of
3463 * the IOCB for the completion callback function to the RDF ELS command.
3464 *
3465 * Return code
3466 * 0 - Successfully issued rdf command
3467 * 1 - Failed to issue rdf command
3468 **/
3469 int
lpfc_issue_els_rdf(struct lpfc_vport * vport,uint8_t retry)3470 lpfc_issue_els_rdf(struct lpfc_vport *vport, uint8_t retry)
3471 {
3472 struct lpfc_hba *phba = vport->phba;
3473 struct lpfc_iocbq *elsiocb;
3474 struct lpfc_els_rdf_req *prdf;
3475 struct lpfc_nodelist *ndlp;
3476 uint16_t cmdsize;
3477 int rc;
3478
3479 cmdsize = sizeof(*prdf);
3480
3481 ndlp = lpfc_findnode_did(vport, Fabric_Cntl_DID);
3482 if (!ndlp) {
3483 ndlp = lpfc_nlp_init(vport, Fabric_Cntl_DID);
3484 if (!ndlp)
3485 return -ENODEV;
3486 lpfc_enqueue_node(vport, ndlp);
3487 }
3488
3489 /* RDF ELS is not required on an NPIV VN_Port. */
3490 if (vport->port_type == LPFC_NPIV_PORT) {
3491 lpfc_nlp_put(ndlp);
3492 return -EACCES;
3493 }
3494
3495 elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp,
3496 ndlp->nlp_DID, ELS_CMD_RDF);
3497 if (!elsiocb)
3498 return -ENOMEM;
3499
3500 /* Configure the payload for the supported FPIN events. */
3501 prdf = (struct lpfc_els_rdf_req *)
3502 (((struct lpfc_dmabuf *)elsiocb->context2)->virt);
3503 memset(prdf, 0, cmdsize);
3504 prdf->rdf.fpin_cmd = ELS_RDF;
3505 prdf->rdf.desc_len = cpu_to_be32(sizeof(struct lpfc_els_rdf_req) -
3506 sizeof(struct fc_els_rdf));
3507 prdf->reg_d1.reg_desc.desc_tag = cpu_to_be32(ELS_DTAG_FPIN_REGISTER);
3508 prdf->reg_d1.reg_desc.desc_len = cpu_to_be32(
3509 FC_TLV_DESC_LENGTH_FROM_SZ(prdf->reg_d1));
3510 prdf->reg_d1.reg_desc.count = cpu_to_be32(ELS_RDF_REG_TAG_CNT);
3511 prdf->reg_d1.desc_tags[0] = cpu_to_be32(ELS_DTAG_LNK_INTEGRITY);
3512 prdf->reg_d1.desc_tags[1] = cpu_to_be32(ELS_DTAG_DELIVERY);
3513 prdf->reg_d1.desc_tags[2] = cpu_to_be32(ELS_DTAG_PEER_CONGEST);
3514 prdf->reg_d1.desc_tags[3] = cpu_to_be32(ELS_DTAG_CONGESTION);
3515
3516 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
3517 "6444 Xmit RDF to remote NPORT x%x\n",
3518 ndlp->nlp_DID);
3519
3520 elsiocb->iocb_cmpl = lpfc_cmpl_els_disc_cmd;
3521 elsiocb->context1 = lpfc_nlp_get(ndlp);
3522 if (!elsiocb->context1) {
3523 lpfc_els_free_iocb(phba, elsiocb);
3524 return -EIO;
3525 }
3526
3527 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
3528 "Issue RDF: did:x%x refcnt %d",
3529 ndlp->nlp_DID, kref_read(&ndlp->kref), 0);
3530
3531 rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
3532 if (rc == IOCB_ERROR) {
3533 lpfc_els_free_iocb(phba, elsiocb);
3534 lpfc_nlp_put(ndlp);
3535 return -EIO;
3536 }
3537 return 0;
3538 }
3539
3540 /**
3541 * lpfc_cancel_retry_delay_tmo - Cancel the timer with delayed iocb-cmd retry
3542 * @vport: pointer to a host virtual N_Port data structure.
3543 * @nlp: pointer to a node-list data structure.
3544 *
3545 * This routine cancels the timer with a delayed IOCB-command retry for
3546 * a @vport's @ndlp. It stops the timer for the delayed function retrial and
3547 * removes the ELS retry event if it presents. In addition, if the
3548 * NLP_NPR_2B_DISC bit is set in the @nlp's nlp_flag bitmap, ADISC IOCB
3549 * commands are sent for the @vport's nodes that require issuing discovery
3550 * ADISC.
3551 **/
3552 void
lpfc_cancel_retry_delay_tmo(struct lpfc_vport * vport,struct lpfc_nodelist * nlp)3553 lpfc_cancel_retry_delay_tmo(struct lpfc_vport *vport, struct lpfc_nodelist *nlp)
3554 {
3555 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3556 struct lpfc_work_evt *evtp;
3557
3558 if (!(nlp->nlp_flag & NLP_DELAY_TMO))
3559 return;
3560 spin_lock_irq(&nlp->lock);
3561 nlp->nlp_flag &= ~NLP_DELAY_TMO;
3562 spin_unlock_irq(&nlp->lock);
3563 del_timer_sync(&nlp->nlp_delayfunc);
3564 nlp->nlp_last_elscmd = 0;
3565 if (!list_empty(&nlp->els_retry_evt.evt_listp)) {
3566 list_del_init(&nlp->els_retry_evt.evt_listp);
3567 /* Decrement nlp reference count held for the delayed retry */
3568 evtp = &nlp->els_retry_evt;
3569 lpfc_nlp_put((struct lpfc_nodelist *)evtp->evt_arg1);
3570 }
3571 if (nlp->nlp_flag & NLP_NPR_2B_DISC) {
3572 spin_lock_irq(&nlp->lock);
3573 nlp->nlp_flag &= ~NLP_NPR_2B_DISC;
3574 spin_unlock_irq(&nlp->lock);
3575 if (vport->num_disc_nodes) {
3576 if (vport->port_state < LPFC_VPORT_READY) {
3577 /* Check if there are more ADISCs to be sent */
3578 lpfc_more_adisc(vport);
3579 } else {
3580 /* Check if there are more PLOGIs to be sent */
3581 lpfc_more_plogi(vport);
3582 if (vport->num_disc_nodes == 0) {
3583 spin_lock_irq(shost->host_lock);
3584 vport->fc_flag &= ~FC_NDISC_ACTIVE;
3585 spin_unlock_irq(shost->host_lock);
3586 lpfc_can_disctmo(vport);
3587 lpfc_end_rscn(vport);
3588 }
3589 }
3590 }
3591 }
3592 return;
3593 }
3594
3595 /**
3596 * lpfc_els_retry_delay - Timer function with a ndlp delayed function timer
3597 * @t: pointer to the timer function associated data (ndlp).
3598 *
3599 * This routine is invoked by the ndlp delayed-function timer to check
3600 * whether there is any pending ELS retry event(s) with the node. If not, it
3601 * simply returns. Otherwise, if there is at least one ELS delayed event, it
3602 * adds the delayed events to the HBA work list and invokes the
3603 * lpfc_worker_wake_up() routine to wake up worker thread to process the
3604 * event. Note that lpfc_nlp_get() is called before posting the event to
3605 * the work list to hold reference count of ndlp so that it guarantees the
3606 * reference to ndlp will still be available when the worker thread gets
3607 * to the event associated with the ndlp.
3608 **/
3609 void
lpfc_els_retry_delay(struct timer_list * t)3610 lpfc_els_retry_delay(struct timer_list *t)
3611 {
3612 struct lpfc_nodelist *ndlp = from_timer(ndlp, t, nlp_delayfunc);
3613 struct lpfc_vport *vport = ndlp->vport;
3614 struct lpfc_hba *phba = vport->phba;
3615 unsigned long flags;
3616 struct lpfc_work_evt *evtp = &ndlp->els_retry_evt;
3617
3618 spin_lock_irqsave(&phba->hbalock, flags);
3619 if (!list_empty(&evtp->evt_listp)) {
3620 spin_unlock_irqrestore(&phba->hbalock, flags);
3621 return;
3622 }
3623
3624 /* We need to hold the node by incrementing the reference
3625 * count until the queued work is done
3626 */
3627 evtp->evt_arg1 = lpfc_nlp_get(ndlp);
3628 if (evtp->evt_arg1) {
3629 evtp->evt = LPFC_EVT_ELS_RETRY;
3630 list_add_tail(&evtp->evt_listp, &phba->work_list);
3631 lpfc_worker_wake_up(phba);
3632 }
3633 spin_unlock_irqrestore(&phba->hbalock, flags);
3634 return;
3635 }
3636
3637 /**
3638 * lpfc_els_retry_delay_handler - Work thread handler for ndlp delayed function
3639 * @ndlp: pointer to a node-list data structure.
3640 *
3641 * This routine is the worker-thread handler for processing the @ndlp delayed
3642 * event(s), posted by the lpfc_els_retry_delay() routine. It simply retrieves
3643 * the last ELS command from the associated ndlp and invokes the proper ELS
3644 * function according to the delayed ELS command to retry the command.
3645 **/
3646 void
lpfc_els_retry_delay_handler(struct lpfc_nodelist * ndlp)3647 lpfc_els_retry_delay_handler(struct lpfc_nodelist *ndlp)
3648 {
3649 struct lpfc_vport *vport = ndlp->vport;
3650 uint32_t cmd, retry;
3651
3652 spin_lock_irq(&ndlp->lock);
3653 cmd = ndlp->nlp_last_elscmd;
3654 ndlp->nlp_last_elscmd = 0;
3655
3656 if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) {
3657 spin_unlock_irq(&ndlp->lock);
3658 return;
3659 }
3660
3661 ndlp->nlp_flag &= ~NLP_DELAY_TMO;
3662 spin_unlock_irq(&ndlp->lock);
3663 /*
3664 * If a discovery event readded nlp_delayfunc after timer
3665 * firing and before processing the timer, cancel the
3666 * nlp_delayfunc.
3667 */
3668 del_timer_sync(&ndlp->nlp_delayfunc);
3669 retry = ndlp->nlp_retry;
3670 ndlp->nlp_retry = 0;
3671
3672 switch (cmd) {
3673 case ELS_CMD_FLOGI:
3674 lpfc_issue_els_flogi(vport, ndlp, retry);
3675 break;
3676 case ELS_CMD_PLOGI:
3677 if (!lpfc_issue_els_plogi(vport, ndlp->nlp_DID, retry)) {
3678 ndlp->nlp_prev_state = ndlp->nlp_state;
3679 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
3680 }
3681 break;
3682 case ELS_CMD_ADISC:
3683 if (!lpfc_issue_els_adisc(vport, ndlp, retry)) {
3684 ndlp->nlp_prev_state = ndlp->nlp_state;
3685 lpfc_nlp_set_state(vport, ndlp, NLP_STE_ADISC_ISSUE);
3686 }
3687 break;
3688 case ELS_CMD_PRLI:
3689 case ELS_CMD_NVMEPRLI:
3690 if (!lpfc_issue_els_prli(vport, ndlp, retry)) {
3691 ndlp->nlp_prev_state = ndlp->nlp_state;
3692 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PRLI_ISSUE);
3693 }
3694 break;
3695 case ELS_CMD_LOGO:
3696 if (!lpfc_issue_els_logo(vport, ndlp, retry)) {
3697 ndlp->nlp_prev_state = ndlp->nlp_state;
3698 lpfc_nlp_set_state(vport, ndlp, NLP_STE_LOGO_ISSUE);
3699 }
3700 break;
3701 case ELS_CMD_FDISC:
3702 if (!(vport->fc_flag & FC_VPORT_NEEDS_INIT_VPI))
3703 lpfc_issue_els_fdisc(vport, ndlp, retry);
3704 break;
3705 }
3706 return;
3707 }
3708
3709 /**
3710 * lpfc_link_reset - Issue link reset
3711 * @vport: pointer to a virtual N_Port data structure.
3712 *
3713 * This routine performs link reset by sending INIT_LINK mailbox command.
3714 * For SLI-3 adapter, link attention interrupt is enabled before issuing
3715 * INIT_LINK mailbox command.
3716 *
3717 * Return code
3718 * 0 - Link reset initiated successfully
3719 * 1 - Failed to initiate link reset
3720 **/
3721 int
lpfc_link_reset(struct lpfc_vport * vport)3722 lpfc_link_reset(struct lpfc_vport *vport)
3723 {
3724 struct lpfc_hba *phba = vport->phba;
3725 LPFC_MBOXQ_t *mbox;
3726 uint32_t control;
3727 int rc;
3728
3729 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
3730 "2851 Attempt link reset\n");
3731 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
3732 if (!mbox) {
3733 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
3734 "2852 Failed to allocate mbox memory");
3735 return 1;
3736 }
3737
3738 /* Enable Link attention interrupts */
3739 if (phba->sli_rev <= LPFC_SLI_REV3) {
3740 spin_lock_irq(&phba->hbalock);
3741 phba->sli.sli_flag |= LPFC_PROCESS_LA;
3742 control = readl(phba->HCregaddr);
3743 control |= HC_LAINT_ENA;
3744 writel(control, phba->HCregaddr);
3745 readl(phba->HCregaddr); /* flush */
3746 spin_unlock_irq(&phba->hbalock);
3747 }
3748
3749 lpfc_init_link(phba, mbox, phba->cfg_topology,
3750 phba->cfg_link_speed);
3751 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
3752 mbox->vport = vport;
3753 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
3754 if ((rc != MBX_BUSY) && (rc != MBX_SUCCESS)) {
3755 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
3756 "2853 Failed to issue INIT_LINK "
3757 "mbox command, rc:x%x\n", rc);
3758 mempool_free(mbox, phba->mbox_mem_pool);
3759 return 1;
3760 }
3761
3762 return 0;
3763 }
3764
3765 /**
3766 * lpfc_els_retry - Make retry decision on an els command iocb
3767 * @phba: pointer to lpfc hba data structure.
3768 * @cmdiocb: pointer to lpfc command iocb data structure.
3769 * @rspiocb: pointer to lpfc response iocb data structure.
3770 *
3771 * This routine makes a retry decision on an ELS command IOCB, which has
3772 * failed. The following ELS IOCBs use this function for retrying the command
3773 * when previously issued command responsed with error status: FLOGI, PLOGI,
3774 * PRLI, ADISC and FDISC. Based on the ELS command type and the
3775 * returned error status, it makes the decision whether a retry shall be
3776 * issued for the command, and whether a retry shall be made immediately or
3777 * delayed. In the former case, the corresponding ELS command issuing-function
3778 * is called to retry the command. In the later case, the ELS command shall
3779 * be posted to the ndlp delayed event and delayed function timer set to the
3780 * ndlp for the delayed command issusing.
3781 *
3782 * Return code
3783 * 0 - No retry of els command is made
3784 * 1 - Immediate or delayed retry of els command is made
3785 **/
3786 static int
lpfc_els_retry(struct lpfc_hba * phba,struct lpfc_iocbq * cmdiocb,struct lpfc_iocbq * rspiocb)3787 lpfc_els_retry(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
3788 struct lpfc_iocbq *rspiocb)
3789 {
3790 struct lpfc_vport *vport = cmdiocb->vport;
3791 IOCB_t *irsp = &rspiocb->iocb;
3792 struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) cmdiocb->context1;
3793 struct lpfc_dmabuf *pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
3794 uint32_t *elscmd;
3795 struct ls_rjt stat;
3796 int retry = 0, maxretry = lpfc_max_els_tries, delay = 0;
3797 int logerr = 0;
3798 uint32_t cmd = 0;
3799 uint32_t did;
3800 int link_reset = 0, rc;
3801
3802
3803 /* Note: context2 may be 0 for internal driver abort
3804 * of delays ELS command.
3805 */
3806
3807 if (pcmd && pcmd->virt) {
3808 elscmd = (uint32_t *) (pcmd->virt);
3809 cmd = *elscmd++;
3810 }
3811
3812 if (ndlp)
3813 did = ndlp->nlp_DID;
3814 else {
3815 /* We should only hit this case for retrying PLOGI */
3816 did = irsp->un.elsreq64.remoteID;
3817 ndlp = lpfc_findnode_did(vport, did);
3818 if (!ndlp && (cmd != ELS_CMD_PLOGI))
3819 return 0;
3820 }
3821
3822 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
3823 "Retry ELS: wd7:x%x wd4:x%x did:x%x",
3824 *(((uint32_t *)irsp) + 7), irsp->un.ulpWord[4], did);
3825
3826 switch (irsp->ulpStatus) {
3827 case IOSTAT_FCP_RSP_ERROR:
3828 break;
3829 case IOSTAT_REMOTE_STOP:
3830 if (phba->sli_rev == LPFC_SLI_REV4) {
3831 /* This IO was aborted by the target, we don't
3832 * know the rxid and because we did not send the
3833 * ABTS we cannot generate and RRQ.
3834 */
3835 lpfc_set_rrq_active(phba, ndlp,
3836 cmdiocb->sli4_lxritag, 0, 0);
3837 }
3838 break;
3839 case IOSTAT_LOCAL_REJECT:
3840 switch ((irsp->un.ulpWord[4] & IOERR_PARAM_MASK)) {
3841 case IOERR_LOOP_OPEN_FAILURE:
3842 if (cmd == ELS_CMD_FLOGI) {
3843 if (PCI_DEVICE_ID_HORNET ==
3844 phba->pcidev->device) {
3845 phba->fc_topology = LPFC_TOPOLOGY_LOOP;
3846 phba->pport->fc_myDID = 0;
3847 phba->alpa_map[0] = 0;
3848 phba->alpa_map[1] = 0;
3849 }
3850 }
3851 if (cmd == ELS_CMD_PLOGI && cmdiocb->retry == 0)
3852 delay = 1000;
3853 retry = 1;
3854 break;
3855
3856 case IOERR_ILLEGAL_COMMAND:
3857 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
3858 "0124 Retry illegal cmd x%x "
3859 "retry:x%x delay:x%x\n",
3860 cmd, cmdiocb->retry, delay);
3861 retry = 1;
3862 /* All command's retry policy */
3863 maxretry = 8;
3864 if (cmdiocb->retry > 2)
3865 delay = 1000;
3866 break;
3867
3868 case IOERR_NO_RESOURCES:
3869 logerr = 1; /* HBA out of resources */
3870 retry = 1;
3871 if (cmdiocb->retry > 100)
3872 delay = 100;
3873 maxretry = 250;
3874 break;
3875
3876 case IOERR_ILLEGAL_FRAME:
3877 delay = 100;
3878 retry = 1;
3879 break;
3880
3881 case IOERR_INVALID_RPI:
3882 if (cmd == ELS_CMD_PLOGI &&
3883 did == NameServer_DID) {
3884 /* Continue forever if plogi to */
3885 /* the nameserver fails */
3886 maxretry = 0;
3887 delay = 100;
3888 }
3889 retry = 1;
3890 break;
3891
3892 case IOERR_SEQUENCE_TIMEOUT:
3893 if (cmd == ELS_CMD_PLOGI &&
3894 did == NameServer_DID &&
3895 (cmdiocb->retry + 1) == maxretry) {
3896 /* Reset the Link */
3897 link_reset = 1;
3898 break;
3899 }
3900 retry = 1;
3901 delay = 100;
3902 break;
3903 }
3904 break;
3905
3906 case IOSTAT_NPORT_RJT:
3907 case IOSTAT_FABRIC_RJT:
3908 if (irsp->un.ulpWord[4] & RJT_UNAVAIL_TEMP) {
3909 retry = 1;
3910 break;
3911 }
3912 break;
3913
3914 case IOSTAT_NPORT_BSY:
3915 case IOSTAT_FABRIC_BSY:
3916 logerr = 1; /* Fabric / Remote NPort out of resources */
3917 retry = 1;
3918 break;
3919
3920 case IOSTAT_LS_RJT:
3921 stat.un.lsRjtError = be32_to_cpu(irsp->un.ulpWord[4]);
3922 /* Added for Vendor specifc support
3923 * Just keep retrying for these Rsn / Exp codes
3924 */
3925 switch (stat.un.b.lsRjtRsnCode) {
3926 case LSRJT_UNABLE_TPC:
3927 /* The driver has a VALID PLOGI but the rport has
3928 * rejected the PRLI - can't do it now. Delay
3929 * for 1 second and try again.
3930 *
3931 * However, if explanation is REQ_UNSUPPORTED there's
3932 * no point to retry PRLI.
3933 */
3934 if ((cmd == ELS_CMD_PRLI || cmd == ELS_CMD_NVMEPRLI) &&
3935 stat.un.b.lsRjtRsnCodeExp !=
3936 LSEXP_REQ_UNSUPPORTED) {
3937 delay = 1000;
3938 maxretry = lpfc_max_els_tries + 1;
3939 retry = 1;
3940 break;
3941 }
3942
3943 /* Legacy bug fix code for targets with PLOGI delays. */
3944 if (stat.un.b.lsRjtRsnCodeExp ==
3945 LSEXP_CMD_IN_PROGRESS) {
3946 if (cmd == ELS_CMD_PLOGI) {
3947 delay = 1000;
3948 maxretry = 48;
3949 }
3950 retry = 1;
3951 break;
3952 }
3953 if (stat.un.b.lsRjtRsnCodeExp ==
3954 LSEXP_CANT_GIVE_DATA) {
3955 if (cmd == ELS_CMD_PLOGI) {
3956 delay = 1000;
3957 maxretry = 48;
3958 }
3959 retry = 1;
3960 break;
3961 }
3962 if (cmd == ELS_CMD_PLOGI) {
3963 delay = 1000;
3964 maxretry = lpfc_max_els_tries + 1;
3965 retry = 1;
3966 break;
3967 }
3968 if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
3969 (cmd == ELS_CMD_FDISC) &&
3970 (stat.un.b.lsRjtRsnCodeExp == LSEXP_OUT_OF_RESOURCE)){
3971 lpfc_printf_vlog(vport, KERN_ERR,
3972 LOG_TRACE_EVENT,
3973 "0125 FDISC Failed (x%x). "
3974 "Fabric out of resources\n",
3975 stat.un.lsRjtError);
3976 lpfc_vport_set_state(vport,
3977 FC_VPORT_NO_FABRIC_RSCS);
3978 }
3979 break;
3980
3981 case LSRJT_LOGICAL_BSY:
3982 if ((cmd == ELS_CMD_PLOGI) ||
3983 (cmd == ELS_CMD_PRLI) ||
3984 (cmd == ELS_CMD_NVMEPRLI)) {
3985 delay = 1000;
3986 maxretry = 48;
3987 } else if (cmd == ELS_CMD_FDISC) {
3988 /* FDISC retry policy */
3989 maxretry = 48;
3990 if (cmdiocb->retry >= 32)
3991 delay = 1000;
3992 }
3993 retry = 1;
3994 break;
3995
3996 case LSRJT_LOGICAL_ERR:
3997 /* There are some cases where switches return this
3998 * error when they are not ready and should be returning
3999 * Logical Busy. We should delay every time.
4000 */
4001 if (cmd == ELS_CMD_FDISC &&
4002 stat.un.b.lsRjtRsnCodeExp == LSEXP_PORT_LOGIN_REQ) {
4003 maxretry = 3;
4004 delay = 1000;
4005 retry = 1;
4006 } else if (cmd == ELS_CMD_FLOGI &&
4007 stat.un.b.lsRjtRsnCodeExp ==
4008 LSEXP_NOTHING_MORE) {
4009 vport->fc_sparam.cmn.bbRcvSizeMsb &= 0xf;
4010 retry = 1;
4011 lpfc_printf_vlog(vport, KERN_ERR,
4012 LOG_TRACE_EVENT,
4013 "0820 FLOGI Failed (x%x). "
4014 "BBCredit Not Supported\n",
4015 stat.un.lsRjtError);
4016 }
4017 break;
4018
4019 case LSRJT_PROTOCOL_ERR:
4020 if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
4021 (cmd == ELS_CMD_FDISC) &&
4022 ((stat.un.b.lsRjtRsnCodeExp == LSEXP_INVALID_PNAME) ||
4023 (stat.un.b.lsRjtRsnCodeExp == LSEXP_INVALID_NPORT_ID))
4024 ) {
4025 lpfc_printf_vlog(vport, KERN_ERR,
4026 LOG_TRACE_EVENT,
4027 "0122 FDISC Failed (x%x). "
4028 "Fabric Detected Bad WWN\n",
4029 stat.un.lsRjtError);
4030 lpfc_vport_set_state(vport,
4031 FC_VPORT_FABRIC_REJ_WWN);
4032 }
4033 break;
4034 case LSRJT_VENDOR_UNIQUE:
4035 if ((stat.un.b.vendorUnique == 0x45) &&
4036 (cmd == ELS_CMD_FLOGI)) {
4037 goto out_retry;
4038 }
4039 break;
4040 case LSRJT_CMD_UNSUPPORTED:
4041 /* lpfc nvmet returns this type of LS_RJT when it
4042 * receives an FCP PRLI because lpfc nvmet only
4043 * support NVME. ELS request is terminated for FCP4
4044 * on this rport.
4045 */
4046 if (stat.un.b.lsRjtRsnCodeExp ==
4047 LSEXP_REQ_UNSUPPORTED && cmd == ELS_CMD_PRLI) {
4048 spin_lock_irq(&ndlp->lock);
4049 ndlp->nlp_flag |= NLP_FCP_PRLI_RJT;
4050 spin_unlock_irq(&ndlp->lock);
4051 retry = 0;
4052 goto out_retry;
4053 }
4054 break;
4055 }
4056 break;
4057
4058 case IOSTAT_INTERMED_RSP:
4059 case IOSTAT_BA_RJT:
4060 break;
4061
4062 default:
4063 break;
4064 }
4065
4066 if (link_reset) {
4067 rc = lpfc_link_reset(vport);
4068 if (rc) {
4069 /* Do not give up. Retry PLOGI one more time and attempt
4070 * link reset if PLOGI fails again.
4071 */
4072 retry = 1;
4073 delay = 100;
4074 goto out_retry;
4075 }
4076 return 1;
4077 }
4078
4079 if (did == FDMI_DID)
4080 retry = 1;
4081
4082 if ((cmd == ELS_CMD_FLOGI) &&
4083 (phba->fc_topology != LPFC_TOPOLOGY_LOOP) &&
4084 !lpfc_error_lost_link(irsp)) {
4085 /* FLOGI retry policy */
4086 retry = 1;
4087 /* retry FLOGI forever */
4088 if (phba->link_flag != LS_LOOPBACK_MODE)
4089 maxretry = 0;
4090 else
4091 maxretry = 2;
4092
4093 if (cmdiocb->retry >= 100)
4094 delay = 5000;
4095 else if (cmdiocb->retry >= 32)
4096 delay = 1000;
4097 } else if ((cmd == ELS_CMD_FDISC) && !lpfc_error_lost_link(irsp)) {
4098 /* retry FDISCs every second up to devloss */
4099 retry = 1;
4100 maxretry = vport->cfg_devloss_tmo;
4101 delay = 1000;
4102 }
4103
4104 cmdiocb->retry++;
4105 if (maxretry && (cmdiocb->retry >= maxretry)) {
4106 phba->fc_stat.elsRetryExceeded++;
4107 retry = 0;
4108 }
4109
4110 if ((vport->load_flag & FC_UNLOADING) != 0)
4111 retry = 0;
4112
4113 out_retry:
4114 if (retry) {
4115 if ((cmd == ELS_CMD_PLOGI) || (cmd == ELS_CMD_FDISC)) {
4116 /* Stop retrying PLOGI and FDISC if in FCF discovery */
4117 if (phba->fcf.fcf_flag & FCF_DISCOVERY) {
4118 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
4119 "2849 Stop retry ELS command "
4120 "x%x to remote NPORT x%x, "
4121 "Data: x%x x%x\n", cmd, did,
4122 cmdiocb->retry, delay);
4123 return 0;
4124 }
4125 }
4126
4127 /* Retry ELS command <elsCmd> to remote NPORT <did> */
4128 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
4129 "0107 Retry ELS command x%x to remote "
4130 "NPORT x%x Data: x%x x%x\n",
4131 cmd, did, cmdiocb->retry, delay);
4132
4133 if (((cmd == ELS_CMD_PLOGI) || (cmd == ELS_CMD_ADISC)) &&
4134 ((irsp->ulpStatus != IOSTAT_LOCAL_REJECT) ||
4135 ((irsp->un.ulpWord[4] & IOERR_PARAM_MASK) !=
4136 IOERR_NO_RESOURCES))) {
4137 /* Don't reset timer for no resources */
4138
4139 /* If discovery / RSCN timer is running, reset it */
4140 if (timer_pending(&vport->fc_disctmo) ||
4141 (vport->fc_flag & FC_RSCN_MODE))
4142 lpfc_set_disctmo(vport);
4143 }
4144
4145 phba->fc_stat.elsXmitRetry++;
4146 if (ndlp && delay) {
4147 phba->fc_stat.elsDelayRetry++;
4148 ndlp->nlp_retry = cmdiocb->retry;
4149
4150 /* delay is specified in milliseconds */
4151 mod_timer(&ndlp->nlp_delayfunc,
4152 jiffies + msecs_to_jiffies(delay));
4153 spin_lock_irq(&ndlp->lock);
4154 ndlp->nlp_flag |= NLP_DELAY_TMO;
4155 spin_unlock_irq(&ndlp->lock);
4156
4157 ndlp->nlp_prev_state = ndlp->nlp_state;
4158 if ((cmd == ELS_CMD_PRLI) ||
4159 (cmd == ELS_CMD_NVMEPRLI))
4160 lpfc_nlp_set_state(vport, ndlp,
4161 NLP_STE_PRLI_ISSUE);
4162 else
4163 lpfc_nlp_set_state(vport, ndlp,
4164 NLP_STE_NPR_NODE);
4165 ndlp->nlp_last_elscmd = cmd;
4166
4167 return 1;
4168 }
4169 switch (cmd) {
4170 case ELS_CMD_FLOGI:
4171 lpfc_issue_els_flogi(vport, ndlp, cmdiocb->retry);
4172 return 1;
4173 case ELS_CMD_FDISC:
4174 lpfc_issue_els_fdisc(vport, ndlp, cmdiocb->retry);
4175 return 1;
4176 case ELS_CMD_PLOGI:
4177 if (ndlp) {
4178 ndlp->nlp_prev_state = ndlp->nlp_state;
4179 lpfc_nlp_set_state(vport, ndlp,
4180 NLP_STE_PLOGI_ISSUE);
4181 }
4182 lpfc_issue_els_plogi(vport, did, cmdiocb->retry);
4183 return 1;
4184 case ELS_CMD_ADISC:
4185 ndlp->nlp_prev_state = ndlp->nlp_state;
4186 lpfc_nlp_set_state(vport, ndlp, NLP_STE_ADISC_ISSUE);
4187 lpfc_issue_els_adisc(vport, ndlp, cmdiocb->retry);
4188 return 1;
4189 case ELS_CMD_PRLI:
4190 case ELS_CMD_NVMEPRLI:
4191 ndlp->nlp_prev_state = ndlp->nlp_state;
4192 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PRLI_ISSUE);
4193 lpfc_issue_els_prli(vport, ndlp, cmdiocb->retry);
4194 return 1;
4195 case ELS_CMD_LOGO:
4196 ndlp->nlp_prev_state = ndlp->nlp_state;
4197 lpfc_nlp_set_state(vport, ndlp, NLP_STE_LOGO_ISSUE);
4198 lpfc_issue_els_logo(vport, ndlp, cmdiocb->retry);
4199 return 1;
4200 }
4201 }
4202 /* No retry ELS command <elsCmd> to remote NPORT <did> */
4203 if (logerr) {
4204 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
4205 "0137 No retry ELS command x%x to remote "
4206 "NPORT x%x: Out of Resources: Error:x%x/%x\n",
4207 cmd, did, irsp->ulpStatus,
4208 irsp->un.ulpWord[4]);
4209 }
4210 else {
4211 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
4212 "0108 No retry ELS command x%x to remote "
4213 "NPORT x%x Retried:%d Error:x%x/%x\n",
4214 cmd, did, cmdiocb->retry, irsp->ulpStatus,
4215 irsp->un.ulpWord[4]);
4216 }
4217 return 0;
4218 }
4219
4220 /**
4221 * lpfc_els_free_data - Free lpfc dma buffer and data structure with an iocb
4222 * @phba: pointer to lpfc hba data structure.
4223 * @buf_ptr1: pointer to the lpfc DMA buffer data structure.
4224 *
4225 * This routine releases the lpfc DMA (Direct Memory Access) buffer(s)
4226 * associated with a command IOCB back to the lpfc DMA buffer pool. It first
4227 * checks to see whether there is a lpfc DMA buffer associated with the
4228 * response of the command IOCB. If so, it will be released before releasing
4229 * the lpfc DMA buffer associated with the IOCB itself.
4230 *
4231 * Return code
4232 * 0 - Successfully released lpfc DMA buffer (currently, always return 0)
4233 **/
4234 static int
lpfc_els_free_data(struct lpfc_hba * phba,struct lpfc_dmabuf * buf_ptr1)4235 lpfc_els_free_data(struct lpfc_hba *phba, struct lpfc_dmabuf *buf_ptr1)
4236 {
4237 struct lpfc_dmabuf *buf_ptr;
4238
4239 /* Free the response before processing the command. */
4240 if (!list_empty(&buf_ptr1->list)) {
4241 list_remove_head(&buf_ptr1->list, buf_ptr,
4242 struct lpfc_dmabuf,
4243 list);
4244 lpfc_mbuf_free(phba, buf_ptr->virt, buf_ptr->phys);
4245 kfree(buf_ptr);
4246 }
4247 lpfc_mbuf_free(phba, buf_ptr1->virt, buf_ptr1->phys);
4248 kfree(buf_ptr1);
4249 return 0;
4250 }
4251
4252 /**
4253 * lpfc_els_free_bpl - Free lpfc dma buffer and data structure with bpl
4254 * @phba: pointer to lpfc hba data structure.
4255 * @buf_ptr: pointer to the lpfc dma buffer data structure.
4256 *
4257 * This routine releases the lpfc Direct Memory Access (DMA) buffer
4258 * associated with a Buffer Pointer List (BPL) back to the lpfc DMA buffer
4259 * pool.
4260 *
4261 * Return code
4262 * 0 - Successfully released lpfc DMA buffer (currently, always return 0)
4263 **/
4264 static int
lpfc_els_free_bpl(struct lpfc_hba * phba,struct lpfc_dmabuf * buf_ptr)4265 lpfc_els_free_bpl(struct lpfc_hba *phba, struct lpfc_dmabuf *buf_ptr)
4266 {
4267 lpfc_mbuf_free(phba, buf_ptr->virt, buf_ptr->phys);
4268 kfree(buf_ptr);
4269 return 0;
4270 }
4271
4272 /**
4273 * lpfc_els_free_iocb - Free a command iocb and its associated resources
4274 * @phba: pointer to lpfc hba data structure.
4275 * @elsiocb: pointer to lpfc els command iocb data structure.
4276 *
4277 * This routine frees a command IOCB and its associated resources. The
4278 * command IOCB data structure contains the reference to various associated
4279 * resources, these fields must be set to NULL if the associated reference
4280 * not present:
4281 * context1 - reference to ndlp
4282 * context2 - reference to cmd
4283 * context2->next - reference to rsp
4284 * context3 - reference to bpl
4285 *
4286 * It first properly decrements the reference count held on ndlp for the
4287 * IOCB completion callback function. If LPFC_DELAY_MEM_FREE flag is not
4288 * set, it invokes the lpfc_els_free_data() routine to release the Direct
4289 * Memory Access (DMA) buffers associated with the IOCB. Otherwise, it
4290 * adds the DMA buffer the @phba data structure for the delayed release.
4291 * If reference to the Buffer Pointer List (BPL) is present, the
4292 * lpfc_els_free_bpl() routine is invoked to release the DMA memory
4293 * associated with BPL. Finally, the lpfc_sli_release_iocbq() routine is
4294 * invoked to release the IOCB data structure back to @phba IOCBQ list.
4295 *
4296 * Return code
4297 * 0 - Success (currently, always return 0)
4298 **/
4299 int
lpfc_els_free_iocb(struct lpfc_hba * phba,struct lpfc_iocbq * elsiocb)4300 lpfc_els_free_iocb(struct lpfc_hba *phba, struct lpfc_iocbq *elsiocb)
4301 {
4302 struct lpfc_dmabuf *buf_ptr, *buf_ptr1;
4303
4304 /* The I/O job is complete. Clear the context1 data. */
4305 elsiocb->context1 = NULL;
4306
4307 /* context2 = cmd, context2->next = rsp, context3 = bpl */
4308 if (elsiocb->context2) {
4309 if (elsiocb->iocb_flag & LPFC_DELAY_MEM_FREE) {
4310 /* Firmware could still be in progress of DMAing
4311 * payload, so don't free data buffer till after
4312 * a hbeat.
4313 */
4314 elsiocb->iocb_flag &= ~LPFC_DELAY_MEM_FREE;
4315 buf_ptr = elsiocb->context2;
4316 elsiocb->context2 = NULL;
4317 if (buf_ptr) {
4318 buf_ptr1 = NULL;
4319 spin_lock_irq(&phba->hbalock);
4320 if (!list_empty(&buf_ptr->list)) {
4321 list_remove_head(&buf_ptr->list,
4322 buf_ptr1, struct lpfc_dmabuf,
4323 list);
4324 INIT_LIST_HEAD(&buf_ptr1->list);
4325 list_add_tail(&buf_ptr1->list,
4326 &phba->elsbuf);
4327 phba->elsbuf_cnt++;
4328 }
4329 INIT_LIST_HEAD(&buf_ptr->list);
4330 list_add_tail(&buf_ptr->list, &phba->elsbuf);
4331 phba->elsbuf_cnt++;
4332 spin_unlock_irq(&phba->hbalock);
4333 }
4334 } else {
4335 buf_ptr1 = (struct lpfc_dmabuf *) elsiocb->context2;
4336 lpfc_els_free_data(phba, buf_ptr1);
4337 elsiocb->context2 = NULL;
4338 }
4339 }
4340
4341 if (elsiocb->context3) {
4342 buf_ptr = (struct lpfc_dmabuf *) elsiocb->context3;
4343 lpfc_els_free_bpl(phba, buf_ptr);
4344 elsiocb->context3 = NULL;
4345 }
4346 lpfc_sli_release_iocbq(phba, elsiocb);
4347 return 0;
4348 }
4349
4350 /**
4351 * lpfc_cmpl_els_logo_acc - Completion callback function to logo acc response
4352 * @phba: pointer to lpfc hba data structure.
4353 * @cmdiocb: pointer to lpfc command iocb data structure.
4354 * @rspiocb: pointer to lpfc response iocb data structure.
4355 *
4356 * This routine is the completion callback function to the Logout (LOGO)
4357 * Accept (ACC) Response ELS command. This routine is invoked to indicate
4358 * the completion of the LOGO process. It invokes the lpfc_nlp_not_used() to
4359 * release the ndlp if it has the last reference remaining (reference count
4360 * is 1). If succeeded (meaning ndlp released), it sets the IOCB context1
4361 * field to NULL to inform the following lpfc_els_free_iocb() routine no
4362 * ndlp reference count needs to be decremented. Otherwise, the ndlp
4363 * reference use-count shall be decremented by the lpfc_els_free_iocb()
4364 * routine. Finally, the lpfc_els_free_iocb() is invoked to release the
4365 * IOCB data structure.
4366 **/
4367 static void
lpfc_cmpl_els_logo_acc(struct lpfc_hba * phba,struct lpfc_iocbq * cmdiocb,struct lpfc_iocbq * rspiocb)4368 lpfc_cmpl_els_logo_acc(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
4369 struct lpfc_iocbq *rspiocb)
4370 {
4371 struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) cmdiocb->context1;
4372 struct lpfc_vport *vport = cmdiocb->vport;
4373 IOCB_t *irsp;
4374
4375 irsp = &rspiocb->iocb;
4376 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP,
4377 "ACC LOGO cmpl: status:x%x/x%x did:x%x",
4378 irsp->ulpStatus, irsp->un.ulpWord[4], ndlp->nlp_DID);
4379 /* ACC to LOGO completes to NPort <nlp_DID> */
4380 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
4381 "0109 ACC to LOGO completes to NPort x%x refcnt %d "
4382 "Data: x%x x%x x%x\n",
4383 ndlp->nlp_DID, kref_read(&ndlp->kref), ndlp->nlp_flag,
4384 ndlp->nlp_state, ndlp->nlp_rpi);
4385
4386 if (ndlp->nlp_state == NLP_STE_NPR_NODE) {
4387 /* NPort Recovery mode or node is just allocated */
4388 if (!lpfc_nlp_not_used(ndlp)) {
4389 /* If the ndlp is being used by another discovery
4390 * thread, just unregister the RPI.
4391 */
4392 lpfc_unreg_rpi(vport, ndlp);
4393 } else {
4394 /* Indicate the node has already released, should
4395 * not reference to it from within lpfc_els_free_iocb.
4396 */
4397 cmdiocb->context1 = NULL;
4398 }
4399 }
4400
4401 /*
4402 * The driver received a LOGO from the rport and has ACK'd it.
4403 * At this point, the driver is done so release the IOCB
4404 */
4405 lpfc_els_free_iocb(phba, cmdiocb);
4406 lpfc_nlp_put(ndlp);
4407 }
4408
4409 /**
4410 * lpfc_mbx_cmpl_dflt_rpi - Completion callbk func for unreg dflt rpi mbox cmd
4411 * @phba: pointer to lpfc hba data structure.
4412 * @pmb: pointer to the driver internal queue element for mailbox command.
4413 *
4414 * This routine is the completion callback function for unregister default
4415 * RPI (Remote Port Index) mailbox command to the @phba. It simply releases
4416 * the associated lpfc Direct Memory Access (DMA) buffer back to the pool and
4417 * decrements the ndlp reference count held for this completion callback
4418 * function. After that, it invokes the lpfc_nlp_not_used() to check
4419 * whether there is only one reference left on the ndlp. If so, it will
4420 * perform one more decrement and trigger the release of the ndlp.
4421 **/
4422 void
lpfc_mbx_cmpl_dflt_rpi(struct lpfc_hba * phba,LPFC_MBOXQ_t * pmb)4423 lpfc_mbx_cmpl_dflt_rpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
4424 {
4425 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *)(pmb->ctx_buf);
4426 struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *)pmb->ctx_ndlp;
4427
4428 pmb->ctx_buf = NULL;
4429 pmb->ctx_ndlp = NULL;
4430
4431 lpfc_mbuf_free(phba, mp->virt, mp->phys);
4432 kfree(mp);
4433 mempool_free(pmb, phba->mbox_mem_pool);
4434 if (ndlp) {
4435 lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_NODE,
4436 "0006 rpi x%x DID:%x flg:%x %d x%px\n",
4437 ndlp->nlp_rpi, ndlp->nlp_DID, ndlp->nlp_flag,
4438 kref_read(&ndlp->kref),
4439 ndlp);
4440 /* This is the end of the default RPI cleanup logic for
4441 * this ndlp and it could get released. Clear the nlp_flags to
4442 * prevent any further processing.
4443 */
4444 ndlp->nlp_flag &= ~NLP_REG_LOGIN_SEND;
4445 lpfc_nlp_put(ndlp);
4446 lpfc_nlp_not_used(ndlp);
4447 }
4448
4449 return;
4450 }
4451
4452 /**
4453 * lpfc_cmpl_els_rsp - Completion callback function for els response iocb cmd
4454 * @phba: pointer to lpfc hba data structure.
4455 * @cmdiocb: pointer to lpfc command iocb data structure.
4456 * @rspiocb: pointer to lpfc response iocb data structure.
4457 *
4458 * This routine is the completion callback function for ELS Response IOCB
4459 * command. In normal case, this callback function just properly sets the
4460 * nlp_flag bitmap in the ndlp data structure, if the mbox command reference
4461 * field in the command IOCB is not NULL, the referred mailbox command will
4462 * be send out, and then invokes the lpfc_els_free_iocb() routine to release
4463 * the IOCB.
4464 **/
4465 static void
lpfc_cmpl_els_rsp(struct lpfc_hba * phba,struct lpfc_iocbq * cmdiocb,struct lpfc_iocbq * rspiocb)4466 lpfc_cmpl_els_rsp(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
4467 struct lpfc_iocbq *rspiocb)
4468 {
4469 struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) cmdiocb->context1;
4470 struct lpfc_vport *vport = ndlp ? ndlp->vport : NULL;
4471 struct Scsi_Host *shost = vport ? lpfc_shost_from_vport(vport) : NULL;
4472 IOCB_t *irsp;
4473 LPFC_MBOXQ_t *mbox = NULL;
4474 struct lpfc_dmabuf *mp = NULL;
4475
4476 irsp = &rspiocb->iocb;
4477
4478 if (!vport) {
4479 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
4480 "3177 ELS response failed\n");
4481 goto out;
4482 }
4483 if (cmdiocb->context_un.mbox)
4484 mbox = cmdiocb->context_un.mbox;
4485
4486 /* Check to see if link went down during discovery */
4487 if (!ndlp || lpfc_els_chk_latt(vport)) {
4488 if (mbox) {
4489 mp = (struct lpfc_dmabuf *)mbox->ctx_buf;
4490 if (mp) {
4491 lpfc_mbuf_free(phba, mp->virt, mp->phys);
4492 kfree(mp);
4493 }
4494 mempool_free(mbox, phba->mbox_mem_pool);
4495 }
4496 goto out;
4497 }
4498
4499 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP,
4500 "ELS rsp cmpl: status:x%x/x%x did:x%x",
4501 irsp->ulpStatus, irsp->un.ulpWord[4],
4502 cmdiocb->iocb.un.elsreq64.remoteID);
4503 /* ELS response tag <ulpIoTag> completes */
4504 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
4505 "0110 ELS response tag x%x completes "
4506 "Data: x%x x%x x%x x%x x%x x%x x%x\n",
4507 cmdiocb->iocb.ulpIoTag, rspiocb->iocb.ulpStatus,
4508 rspiocb->iocb.un.ulpWord[4], rspiocb->iocb.ulpTimeout,
4509 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
4510 ndlp->nlp_rpi);
4511 if (mbox) {
4512 if ((rspiocb->iocb.ulpStatus == 0) &&
4513 (ndlp->nlp_flag & NLP_ACC_REGLOGIN)) {
4514 if (!lpfc_unreg_rpi(vport, ndlp) &&
4515 (!(vport->fc_flag & FC_PT2PT))) {
4516 if (ndlp->nlp_state == NLP_STE_REG_LOGIN_ISSUE) {
4517 lpfc_printf_vlog(vport, KERN_INFO,
4518 LOG_DISCOVERY,
4519 "0314 PLOGI recov "
4520 "DID x%x "
4521 "Data: x%x x%x x%x\n",
4522 ndlp->nlp_DID,
4523 ndlp->nlp_state,
4524 ndlp->nlp_rpi,
4525 ndlp->nlp_flag);
4526 mp = mbox->ctx_buf;
4527 if (mp) {
4528 lpfc_mbuf_free(phba, mp->virt,
4529 mp->phys);
4530 kfree(mp);
4531 }
4532 mempool_free(mbox, phba->mbox_mem_pool);
4533 goto out;
4534 }
4535 }
4536
4537 /* Increment reference count to ndlp to hold the
4538 * reference to ndlp for the callback function.
4539 */
4540 mbox->ctx_ndlp = lpfc_nlp_get(ndlp);
4541 if (!mbox->ctx_ndlp)
4542 goto out;
4543
4544 mbox->vport = vport;
4545 if (ndlp->nlp_flag & NLP_RM_DFLT_RPI) {
4546 mbox->mbox_flag |= LPFC_MBX_IMED_UNREG;
4547 mbox->mbox_cmpl = lpfc_mbx_cmpl_dflt_rpi;
4548 }
4549 else {
4550 mbox->mbox_cmpl = lpfc_mbx_cmpl_reg_login;
4551 ndlp->nlp_prev_state = ndlp->nlp_state;
4552 lpfc_nlp_set_state(vport, ndlp,
4553 NLP_STE_REG_LOGIN_ISSUE);
4554 }
4555
4556 ndlp->nlp_flag |= NLP_REG_LOGIN_SEND;
4557 if (lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT)
4558 != MBX_NOT_FINISHED)
4559 goto out;
4560
4561 /* Decrement the ndlp reference count we
4562 * set for this failed mailbox command.
4563 */
4564 lpfc_nlp_put(ndlp);
4565 ndlp->nlp_flag &= ~NLP_REG_LOGIN_SEND;
4566
4567 /* ELS rsp: Cannot issue reg_login for <NPortid> */
4568 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
4569 "0138 ELS rsp: Cannot issue reg_login for x%x "
4570 "Data: x%x x%x x%x\n",
4571 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
4572 ndlp->nlp_rpi);
4573 }
4574 mp = (struct lpfc_dmabuf *)mbox->ctx_buf;
4575 if (mp) {
4576 lpfc_mbuf_free(phba, mp->virt, mp->phys);
4577 kfree(mp);
4578 }
4579 mempool_free(mbox, phba->mbox_mem_pool);
4580 }
4581 out:
4582 if (ndlp && shost) {
4583 spin_lock_irq(&ndlp->lock);
4584 if (mbox)
4585 ndlp->nlp_flag &= ~NLP_ACC_REGLOGIN;
4586 ndlp->nlp_flag &= ~NLP_RM_DFLT_RPI;
4587 spin_unlock_irq(&ndlp->lock);
4588 }
4589
4590 /* Release the originating I/O reference. */
4591 lpfc_els_free_iocb(phba, cmdiocb);
4592 lpfc_nlp_put(ndlp);
4593 return;
4594 }
4595
4596 /**
4597 * lpfc_els_rsp_acc - Prepare and issue an acc response iocb command
4598 * @vport: pointer to a host virtual N_Port data structure.
4599 * @flag: the els command code to be accepted.
4600 * @oldiocb: pointer to the original lpfc command iocb data structure.
4601 * @ndlp: pointer to a node-list data structure.
4602 * @mbox: pointer to the driver internal queue element for mailbox command.
4603 *
4604 * This routine prepares and issues an Accept (ACC) response IOCB
4605 * command. It uses the @flag to properly set up the IOCB field for the
4606 * specific ACC response command to be issued and invokes the
4607 * lpfc_sli_issue_iocb() routine to send out ACC response IOCB. If a
4608 * @mbox pointer is passed in, it will be put into the context_un.mbox
4609 * field of the IOCB for the completion callback function to issue the
4610 * mailbox command to the HBA later when callback is invoked.
4611 *
4612 * Note that the ndlp reference count will be incremented by 1 for holding the
4613 * ndlp and the reference to ndlp will be stored into the context1 field of
4614 * the IOCB for the completion callback function to the corresponding
4615 * response ELS IOCB command.
4616 *
4617 * Return code
4618 * 0 - Successfully issued acc response
4619 * 1 - Failed to issue acc response
4620 **/
4621 int
lpfc_els_rsp_acc(struct lpfc_vport * vport,uint32_t flag,struct lpfc_iocbq * oldiocb,struct lpfc_nodelist * ndlp,LPFC_MBOXQ_t * mbox)4622 lpfc_els_rsp_acc(struct lpfc_vport *vport, uint32_t flag,
4623 struct lpfc_iocbq *oldiocb, struct lpfc_nodelist *ndlp,
4624 LPFC_MBOXQ_t *mbox)
4625 {
4626 struct lpfc_hba *phba = vport->phba;
4627 IOCB_t *icmd;
4628 IOCB_t *oldcmd;
4629 struct lpfc_iocbq *elsiocb;
4630 uint8_t *pcmd;
4631 struct serv_parm *sp;
4632 uint16_t cmdsize;
4633 int rc;
4634 ELS_PKT *els_pkt_ptr;
4635
4636 oldcmd = &oldiocb->iocb;
4637
4638 switch (flag) {
4639 case ELS_CMD_ACC:
4640 cmdsize = sizeof(uint32_t);
4641 elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry,
4642 ndlp, ndlp->nlp_DID, ELS_CMD_ACC);
4643 if (!elsiocb) {
4644 spin_lock_irq(&ndlp->lock);
4645 ndlp->nlp_flag &= ~NLP_LOGO_ACC;
4646 spin_unlock_irq(&ndlp->lock);
4647 return 1;
4648 }
4649
4650 icmd = &elsiocb->iocb;
4651 icmd->ulpContext = oldcmd->ulpContext; /* Xri / rx_id */
4652 icmd->unsli3.rcvsli3.ox_id = oldcmd->unsli3.rcvsli3.ox_id;
4653 pcmd = (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
4654 *((uint32_t *) (pcmd)) = ELS_CMD_ACC;
4655 pcmd += sizeof(uint32_t);
4656
4657 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP,
4658 "Issue ACC: did:x%x flg:x%x",
4659 ndlp->nlp_DID, ndlp->nlp_flag, 0);
4660 break;
4661 case ELS_CMD_FLOGI:
4662 case ELS_CMD_PLOGI:
4663 cmdsize = (sizeof(struct serv_parm) + sizeof(uint32_t));
4664 elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry,
4665 ndlp, ndlp->nlp_DID, ELS_CMD_ACC);
4666 if (!elsiocb)
4667 return 1;
4668
4669 icmd = &elsiocb->iocb;
4670 icmd->ulpContext = oldcmd->ulpContext; /* Xri / rx_id */
4671 icmd->unsli3.rcvsli3.ox_id = oldcmd->unsli3.rcvsli3.ox_id;
4672 pcmd = (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
4673
4674 if (mbox)
4675 elsiocb->context_un.mbox = mbox;
4676
4677 *((uint32_t *) (pcmd)) = ELS_CMD_ACC;
4678 pcmd += sizeof(uint32_t);
4679 sp = (struct serv_parm *)pcmd;
4680
4681 if (flag == ELS_CMD_FLOGI) {
4682 /* Copy the received service parameters back */
4683 memcpy(sp, &phba->fc_fabparam,
4684 sizeof(struct serv_parm));
4685
4686 /* Clear the F_Port bit */
4687 sp->cmn.fPort = 0;
4688
4689 /* Mark all class service parameters as invalid */
4690 sp->cls1.classValid = 0;
4691 sp->cls2.classValid = 0;
4692 sp->cls3.classValid = 0;
4693 sp->cls4.classValid = 0;
4694
4695 /* Copy our worldwide names */
4696 memcpy(&sp->portName, &vport->fc_sparam.portName,
4697 sizeof(struct lpfc_name));
4698 memcpy(&sp->nodeName, &vport->fc_sparam.nodeName,
4699 sizeof(struct lpfc_name));
4700 } else {
4701 memcpy(pcmd, &vport->fc_sparam,
4702 sizeof(struct serv_parm));
4703
4704 sp->cmn.valid_vendor_ver_level = 0;
4705 memset(sp->un.vendorVersion, 0,
4706 sizeof(sp->un.vendorVersion));
4707 sp->cmn.bbRcvSizeMsb &= 0xF;
4708
4709 /* If our firmware supports this feature, convey that
4710 * info to the target using the vendor specific field.
4711 */
4712 if (phba->sli.sli_flag & LPFC_SLI_SUPPRESS_RSP) {
4713 sp->cmn.valid_vendor_ver_level = 1;
4714 sp->un.vv.vid = cpu_to_be32(LPFC_VV_EMLX_ID);
4715 sp->un.vv.flags =
4716 cpu_to_be32(LPFC_VV_SUPPRESS_RSP);
4717 }
4718 }
4719
4720 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP,
4721 "Issue ACC FLOGI/PLOGI: did:x%x flg:x%x",
4722 ndlp->nlp_DID, ndlp->nlp_flag, 0);
4723 break;
4724 case ELS_CMD_PRLO:
4725 cmdsize = sizeof(uint32_t) + sizeof(PRLO);
4726 elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry,
4727 ndlp, ndlp->nlp_DID, ELS_CMD_PRLO);
4728 if (!elsiocb)
4729 return 1;
4730
4731 icmd = &elsiocb->iocb;
4732 icmd->ulpContext = oldcmd->ulpContext; /* Xri / rx_id */
4733 icmd->unsli3.rcvsli3.ox_id = oldcmd->unsli3.rcvsli3.ox_id;
4734 pcmd = (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
4735
4736 memcpy(pcmd, ((struct lpfc_dmabuf *) oldiocb->context2)->virt,
4737 sizeof(uint32_t) + sizeof(PRLO));
4738 *((uint32_t *) (pcmd)) = ELS_CMD_PRLO_ACC;
4739 els_pkt_ptr = (ELS_PKT *) pcmd;
4740 els_pkt_ptr->un.prlo.acceptRspCode = PRLO_REQ_EXECUTED;
4741
4742 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP,
4743 "Issue ACC PRLO: did:x%x flg:x%x",
4744 ndlp->nlp_DID, ndlp->nlp_flag, 0);
4745 break;
4746 default:
4747 return 1;
4748 }
4749 if (ndlp->nlp_flag & NLP_LOGO_ACC) {
4750 spin_lock_irq(&ndlp->lock);
4751 if (!(ndlp->nlp_flag & NLP_RPI_REGISTERED ||
4752 ndlp->nlp_flag & NLP_REG_LOGIN_SEND))
4753 ndlp->nlp_flag &= ~NLP_LOGO_ACC;
4754 spin_unlock_irq(&ndlp->lock);
4755 elsiocb->iocb_cmpl = lpfc_cmpl_els_logo_acc;
4756 } else {
4757 elsiocb->iocb_cmpl = lpfc_cmpl_els_rsp;
4758 }
4759
4760 phba->fc_stat.elsXmitACC++;
4761 elsiocb->context1 = lpfc_nlp_get(ndlp);
4762 if (!elsiocb->context1) {
4763 lpfc_els_free_iocb(phba, elsiocb);
4764 return 1;
4765 }
4766
4767 rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
4768 if (rc == IOCB_ERROR) {
4769 lpfc_els_free_iocb(phba, elsiocb);
4770 lpfc_nlp_put(ndlp);
4771 return 1;
4772 }
4773
4774 /* Xmit ELS ACC response tag <ulpIoTag> */
4775 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
4776 "0128 Xmit ELS ACC response Status: x%x, IoTag: x%x, "
4777 "XRI: x%x, DID: x%x, nlp_flag: x%x nlp_state: x%x "
4778 "RPI: x%x, fc_flag x%x\n",
4779 rc, elsiocb->iotag, elsiocb->sli4_xritag,
4780 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
4781 ndlp->nlp_rpi, vport->fc_flag);
4782 return 0;
4783 }
4784
4785 /**
4786 * lpfc_els_rsp_reject - Prepare and issue a rjt response iocb command
4787 * @vport: pointer to a virtual N_Port data structure.
4788 * @rejectError: reject response to issue
4789 * @oldiocb: pointer to the original lpfc command iocb data structure.
4790 * @ndlp: pointer to a node-list data structure.
4791 * @mbox: pointer to the driver internal queue element for mailbox command.
4792 *
4793 * This routine prepares and issue an Reject (RJT) response IOCB
4794 * command. If a @mbox pointer is passed in, it will be put into the
4795 * context_un.mbox field of the IOCB for the completion callback function
4796 * to issue to the HBA later.
4797 *
4798 * Note that the ndlp reference count will be incremented by 1 for holding the
4799 * ndlp and the reference to ndlp will be stored into the context1 field of
4800 * the IOCB for the completion callback function to the reject response
4801 * ELS IOCB command.
4802 *
4803 * Return code
4804 * 0 - Successfully issued reject response
4805 * 1 - Failed to issue reject response
4806 **/
4807 int
lpfc_els_rsp_reject(struct lpfc_vport * vport,uint32_t rejectError,struct lpfc_iocbq * oldiocb,struct lpfc_nodelist * ndlp,LPFC_MBOXQ_t * mbox)4808 lpfc_els_rsp_reject(struct lpfc_vport *vport, uint32_t rejectError,
4809 struct lpfc_iocbq *oldiocb, struct lpfc_nodelist *ndlp,
4810 LPFC_MBOXQ_t *mbox)
4811 {
4812 int rc;
4813 struct lpfc_hba *phba = vport->phba;
4814 IOCB_t *icmd;
4815 IOCB_t *oldcmd;
4816 struct lpfc_iocbq *elsiocb;
4817 uint8_t *pcmd;
4818 uint16_t cmdsize;
4819
4820 cmdsize = 2 * sizeof(uint32_t);
4821 elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry, ndlp,
4822 ndlp->nlp_DID, ELS_CMD_LS_RJT);
4823 if (!elsiocb)
4824 return 1;
4825
4826 icmd = &elsiocb->iocb;
4827 oldcmd = &oldiocb->iocb;
4828 icmd->ulpContext = oldcmd->ulpContext; /* Xri / rx_id */
4829 icmd->unsli3.rcvsli3.ox_id = oldcmd->unsli3.rcvsli3.ox_id;
4830 pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
4831
4832 *((uint32_t *) (pcmd)) = ELS_CMD_LS_RJT;
4833 pcmd += sizeof(uint32_t);
4834 *((uint32_t *) (pcmd)) = rejectError;
4835
4836 if (mbox)
4837 elsiocb->context_un.mbox = mbox;
4838
4839 /* Xmit ELS RJT <err> response tag <ulpIoTag> */
4840 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
4841 "0129 Xmit ELS RJT x%x response tag x%x "
4842 "xri x%x, did x%x, nlp_flag x%x, nlp_state x%x, "
4843 "rpi x%x\n",
4844 rejectError, elsiocb->iotag,
4845 elsiocb->iocb.ulpContext, ndlp->nlp_DID,
4846 ndlp->nlp_flag, ndlp->nlp_state, ndlp->nlp_rpi);
4847 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP,
4848 "Issue LS_RJT: did:x%x flg:x%x err:x%x",
4849 ndlp->nlp_DID, ndlp->nlp_flag, rejectError);
4850
4851 phba->fc_stat.elsXmitLSRJT++;
4852 elsiocb->iocb_cmpl = lpfc_cmpl_els_rsp;
4853 elsiocb->context1 = lpfc_nlp_get(ndlp);
4854 if (!elsiocb->context1) {
4855 lpfc_els_free_iocb(phba, elsiocb);
4856 return 1;
4857 }
4858
4859 rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
4860 if (rc == IOCB_ERROR) {
4861 lpfc_els_free_iocb(phba, elsiocb);
4862 lpfc_nlp_put(ndlp);
4863 return 1;
4864 }
4865
4866 return 0;
4867 }
4868
4869 /**
4870 * lpfc_els_rsp_adisc_acc - Prepare and issue acc response to adisc iocb cmd
4871 * @vport: pointer to a virtual N_Port data structure.
4872 * @oldiocb: pointer to the original lpfc command iocb data structure.
4873 * @ndlp: pointer to a node-list data structure.
4874 *
4875 * This routine prepares and issues an Accept (ACC) response to Address
4876 * Discover (ADISC) ELS command. It simply prepares the payload of the IOCB
4877 * and invokes the lpfc_sli_issue_iocb() routine to send out the command.
4878 *
4879 * Note that the ndlp reference count will be incremented by 1 for holding the
4880 * ndlp and the reference to ndlp will be stored into the context1 field of
4881 * the IOCB for the completion callback function to the ADISC Accept response
4882 * ELS IOCB command.
4883 *
4884 * Return code
4885 * 0 - Successfully issued acc adisc response
4886 * 1 - Failed to issue adisc acc response
4887 **/
4888 int
lpfc_els_rsp_adisc_acc(struct lpfc_vport * vport,struct lpfc_iocbq * oldiocb,struct lpfc_nodelist * ndlp)4889 lpfc_els_rsp_adisc_acc(struct lpfc_vport *vport, struct lpfc_iocbq *oldiocb,
4890 struct lpfc_nodelist *ndlp)
4891 {
4892 struct lpfc_hba *phba = vport->phba;
4893 ADISC *ap;
4894 IOCB_t *icmd, *oldcmd;
4895 struct lpfc_iocbq *elsiocb;
4896 uint8_t *pcmd;
4897 uint16_t cmdsize;
4898 int rc;
4899
4900 cmdsize = sizeof(uint32_t) + sizeof(ADISC);
4901 elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry, ndlp,
4902 ndlp->nlp_DID, ELS_CMD_ACC);
4903 if (!elsiocb)
4904 return 1;
4905
4906 icmd = &elsiocb->iocb;
4907 oldcmd = &oldiocb->iocb;
4908 icmd->ulpContext = oldcmd->ulpContext; /* Xri / rx_id */
4909 icmd->unsli3.rcvsli3.ox_id = oldcmd->unsli3.rcvsli3.ox_id;
4910
4911 /* Xmit ADISC ACC response tag <ulpIoTag> */
4912 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
4913 "0130 Xmit ADISC ACC response iotag x%x xri: "
4914 "x%x, did x%x, nlp_flag x%x, nlp_state x%x rpi x%x\n",
4915 elsiocb->iotag, elsiocb->iocb.ulpContext,
4916 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
4917 ndlp->nlp_rpi);
4918 pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
4919
4920 *((uint32_t *) (pcmd)) = ELS_CMD_ACC;
4921 pcmd += sizeof(uint32_t);
4922
4923 ap = (ADISC *) (pcmd);
4924 ap->hardAL_PA = phba->fc_pref_ALPA;
4925 memcpy(&ap->portName, &vport->fc_portname, sizeof(struct lpfc_name));
4926 memcpy(&ap->nodeName, &vport->fc_nodename, sizeof(struct lpfc_name));
4927 ap->DID = be32_to_cpu(vport->fc_myDID);
4928
4929 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP,
4930 "Issue ACC ADISC: did:x%x flg:x%x refcnt %d",
4931 ndlp->nlp_DID, ndlp->nlp_flag, kref_read(&ndlp->kref));
4932
4933 phba->fc_stat.elsXmitACC++;
4934 elsiocb->iocb_cmpl = lpfc_cmpl_els_rsp;
4935 elsiocb->context1 = lpfc_nlp_get(ndlp);
4936 if (!elsiocb->context1) {
4937 lpfc_els_free_iocb(phba, elsiocb);
4938 return 1;
4939 }
4940
4941 rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
4942 if (rc == IOCB_ERROR) {
4943 lpfc_els_free_iocb(phba, elsiocb);
4944 lpfc_nlp_put(ndlp);
4945 return 1;
4946 }
4947
4948 /* Xmit ELS ACC response tag <ulpIoTag> */
4949 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
4950 "0128 Xmit ELS ACC response Status: x%x, IoTag: x%x, "
4951 "XRI: x%x, DID: x%x, nlp_flag: x%x nlp_state: x%x "
4952 "RPI: x%x, fc_flag x%x\n",
4953 rc, elsiocb->iotag, elsiocb->sli4_xritag,
4954 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
4955 ndlp->nlp_rpi, vport->fc_flag);
4956 return 0;
4957 }
4958
4959 /**
4960 * lpfc_els_rsp_prli_acc - Prepare and issue acc response to prli iocb cmd
4961 * @vport: pointer to a virtual N_Port data structure.
4962 * @oldiocb: pointer to the original lpfc command iocb data structure.
4963 * @ndlp: pointer to a node-list data structure.
4964 *
4965 * This routine prepares and issues an Accept (ACC) response to Process
4966 * Login (PRLI) ELS command. It simply prepares the payload of the IOCB
4967 * and invokes the lpfc_sli_issue_iocb() routine to send out the command.
4968 *
4969 * Note that the ndlp reference count will be incremented by 1 for holding the
4970 * ndlp and the reference to ndlp will be stored into the context1 field of
4971 * the IOCB for the completion callback function to the PRLI Accept response
4972 * ELS IOCB command.
4973 *
4974 * Return code
4975 * 0 - Successfully issued acc prli response
4976 * 1 - Failed to issue acc prli response
4977 **/
4978 int
lpfc_els_rsp_prli_acc(struct lpfc_vport * vport,struct lpfc_iocbq * oldiocb,struct lpfc_nodelist * ndlp)4979 lpfc_els_rsp_prli_acc(struct lpfc_vport *vport, struct lpfc_iocbq *oldiocb,
4980 struct lpfc_nodelist *ndlp)
4981 {
4982 struct lpfc_hba *phba = vport->phba;
4983 PRLI *npr;
4984 struct lpfc_nvme_prli *npr_nvme;
4985 lpfc_vpd_t *vpd;
4986 IOCB_t *icmd;
4987 IOCB_t *oldcmd;
4988 struct lpfc_iocbq *elsiocb;
4989 uint8_t *pcmd;
4990 uint16_t cmdsize;
4991 uint32_t prli_fc4_req, *req_payload;
4992 struct lpfc_dmabuf *req_buf;
4993 int rc;
4994 u32 elsrspcmd;
4995
4996 /* Need the incoming PRLI payload to determine if the ACC is for an
4997 * FC4 or NVME PRLI type. The PRLI type is at word 1.
4998 */
4999 req_buf = (struct lpfc_dmabuf *)oldiocb->context2;
5000 req_payload = (((uint32_t *)req_buf->virt) + 1);
5001
5002 /* PRLI type payload is at byte 3 for FCP or NVME. */
5003 prli_fc4_req = be32_to_cpu(*req_payload);
5004 prli_fc4_req = (prli_fc4_req >> 24) & 0xff;
5005 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
5006 "6127 PRLI_ACC: Req Type x%x, Word1 x%08x\n",
5007 prli_fc4_req, *((uint32_t *)req_payload));
5008
5009 if (prli_fc4_req == PRLI_FCP_TYPE) {
5010 cmdsize = sizeof(uint32_t) + sizeof(PRLI);
5011 elsrspcmd = (ELS_CMD_ACC | (ELS_CMD_PRLI & ~ELS_RSP_MASK));
5012 } else if (prli_fc4_req & PRLI_NVME_TYPE) {
5013 cmdsize = sizeof(uint32_t) + sizeof(struct lpfc_nvme_prli);
5014 elsrspcmd = (ELS_CMD_ACC | (ELS_CMD_NVMEPRLI & ~ELS_RSP_MASK));
5015 } else {
5016 return 1;
5017 }
5018
5019 elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry, ndlp,
5020 ndlp->nlp_DID, elsrspcmd);
5021 if (!elsiocb)
5022 return 1;
5023
5024 icmd = &elsiocb->iocb;
5025 oldcmd = &oldiocb->iocb;
5026 icmd->ulpContext = oldcmd->ulpContext; /* Xri / rx_id */
5027 icmd->unsli3.rcvsli3.ox_id = oldcmd->unsli3.rcvsli3.ox_id;
5028
5029 /* Xmit PRLI ACC response tag <ulpIoTag> */
5030 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
5031 "0131 Xmit PRLI ACC response tag x%x xri x%x, "
5032 "did x%x, nlp_flag x%x, nlp_state x%x, rpi x%x\n",
5033 elsiocb->iotag, elsiocb->iocb.ulpContext,
5034 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
5035 ndlp->nlp_rpi);
5036 pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
5037 memset(pcmd, 0, cmdsize);
5038
5039 *((uint32_t *)(pcmd)) = elsrspcmd;
5040 pcmd += sizeof(uint32_t);
5041
5042 /* For PRLI, remainder of payload is PRLI parameter page */
5043 vpd = &phba->vpd;
5044
5045 if (prli_fc4_req == PRLI_FCP_TYPE) {
5046 /*
5047 * If the remote port is a target and our firmware version
5048 * is 3.20 or later, set the following bits for FC-TAPE
5049 * support.
5050 */
5051 npr = (PRLI *) pcmd;
5052 if ((ndlp->nlp_type & NLP_FCP_TARGET) &&
5053 (vpd->rev.feaLevelHigh >= 0x02)) {
5054 npr->ConfmComplAllowed = 1;
5055 npr->Retry = 1;
5056 npr->TaskRetryIdReq = 1;
5057 }
5058 npr->acceptRspCode = PRLI_REQ_EXECUTED;
5059 npr->estabImagePair = 1;
5060 npr->readXferRdyDis = 1;
5061 npr->ConfmComplAllowed = 1;
5062 npr->prliType = PRLI_FCP_TYPE;
5063 npr->initiatorFunc = 1;
5064 } else if (prli_fc4_req & PRLI_NVME_TYPE) {
5065 /* Respond with an NVME PRLI Type */
5066 npr_nvme = (struct lpfc_nvme_prli *) pcmd;
5067 bf_set(prli_type_code, npr_nvme, PRLI_NVME_TYPE);
5068 bf_set(prli_estabImagePair, npr_nvme, 0); /* Should be 0 */
5069 bf_set(prli_acc_rsp_code, npr_nvme, PRLI_REQ_EXECUTED);
5070 if (phba->nvmet_support) {
5071 bf_set(prli_tgt, npr_nvme, 1);
5072 bf_set(prli_disc, npr_nvme, 1);
5073 if (phba->cfg_nvme_enable_fb) {
5074 bf_set(prli_fba, npr_nvme, 1);
5075
5076 /* TBD. Target mode needs to post buffers
5077 * that support the configured first burst
5078 * byte size.
5079 */
5080 bf_set(prli_fb_sz, npr_nvme,
5081 phba->cfg_nvmet_fb_size);
5082 }
5083 } else {
5084 bf_set(prli_init, npr_nvme, 1);
5085 }
5086
5087 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_DISC,
5088 "6015 NVME issue PRLI ACC word1 x%08x "
5089 "word4 x%08x word5 x%08x flag x%x, "
5090 "fcp_info x%x nlp_type x%x\n",
5091 npr_nvme->word1, npr_nvme->word4,
5092 npr_nvme->word5, ndlp->nlp_flag,
5093 ndlp->nlp_fcp_info, ndlp->nlp_type);
5094 npr_nvme->word1 = cpu_to_be32(npr_nvme->word1);
5095 npr_nvme->word4 = cpu_to_be32(npr_nvme->word4);
5096 npr_nvme->word5 = cpu_to_be32(npr_nvme->word5);
5097 } else
5098 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
5099 "6128 Unknown FC_TYPE x%x x%x ndlp x%06x\n",
5100 prli_fc4_req, ndlp->nlp_fc4_type,
5101 ndlp->nlp_DID);
5102
5103 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP,
5104 "Issue ACC PRLI: did:x%x flg:x%x",
5105 ndlp->nlp_DID, ndlp->nlp_flag, kref_read(&ndlp->kref));
5106
5107 phba->fc_stat.elsXmitACC++;
5108 elsiocb->iocb_cmpl = lpfc_cmpl_els_rsp;
5109 elsiocb->context1 = lpfc_nlp_get(ndlp);
5110 if (!elsiocb->context1) {
5111 lpfc_els_free_iocb(phba, elsiocb);
5112 return 1;
5113 }
5114
5115 rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
5116 if (rc == IOCB_ERROR) {
5117 lpfc_els_free_iocb(phba, elsiocb);
5118 lpfc_nlp_put(ndlp);
5119 return 1;
5120 }
5121
5122 return 0;
5123 }
5124
5125 /**
5126 * lpfc_els_rsp_rnid_acc - Issue rnid acc response iocb command
5127 * @vport: pointer to a virtual N_Port data structure.
5128 * @format: rnid command format.
5129 * @oldiocb: pointer to the original lpfc command iocb data structure.
5130 * @ndlp: pointer to a node-list data structure.
5131 *
5132 * This routine issues a Request Node Identification Data (RNID) Accept
5133 * (ACC) response. It constructs the RNID ACC response command according to
5134 * the proper @format and then calls the lpfc_sli_issue_iocb() routine to
5135 * issue the response.
5136 *
5137 * Note that the ndlp reference count will be incremented by 1 for holding the
5138 * ndlp and the reference to ndlp will be stored into the context1 field of
5139 * the IOCB for the completion callback function.
5140 *
5141 * Return code
5142 * 0 - Successfully issued acc rnid response
5143 * 1 - Failed to issue acc rnid response
5144 **/
5145 static int
lpfc_els_rsp_rnid_acc(struct lpfc_vport * vport,uint8_t format,struct lpfc_iocbq * oldiocb,struct lpfc_nodelist * ndlp)5146 lpfc_els_rsp_rnid_acc(struct lpfc_vport *vport, uint8_t format,
5147 struct lpfc_iocbq *oldiocb, struct lpfc_nodelist *ndlp)
5148 {
5149 struct lpfc_hba *phba = vport->phba;
5150 RNID *rn;
5151 IOCB_t *icmd, *oldcmd;
5152 struct lpfc_iocbq *elsiocb;
5153 uint8_t *pcmd;
5154 uint16_t cmdsize;
5155 int rc;
5156
5157 cmdsize = sizeof(uint32_t) + sizeof(uint32_t)
5158 + (2 * sizeof(struct lpfc_name));
5159 if (format)
5160 cmdsize += sizeof(RNID_TOP_DISC);
5161
5162 elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry, ndlp,
5163 ndlp->nlp_DID, ELS_CMD_ACC);
5164 if (!elsiocb)
5165 return 1;
5166
5167 icmd = &elsiocb->iocb;
5168 oldcmd = &oldiocb->iocb;
5169 icmd->ulpContext = oldcmd->ulpContext; /* Xri / rx_id */
5170 icmd->unsli3.rcvsli3.ox_id = oldcmd->unsli3.rcvsli3.ox_id;
5171
5172 /* Xmit RNID ACC response tag <ulpIoTag> */
5173 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
5174 "0132 Xmit RNID ACC response tag x%x xri x%x\n",
5175 elsiocb->iotag, elsiocb->iocb.ulpContext);
5176 pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
5177 *((uint32_t *) (pcmd)) = ELS_CMD_ACC;
5178 pcmd += sizeof(uint32_t);
5179
5180 memset(pcmd, 0, sizeof(RNID));
5181 rn = (RNID *) (pcmd);
5182 rn->Format = format;
5183 rn->CommonLen = (2 * sizeof(struct lpfc_name));
5184 memcpy(&rn->portName, &vport->fc_portname, sizeof(struct lpfc_name));
5185 memcpy(&rn->nodeName, &vport->fc_nodename, sizeof(struct lpfc_name));
5186 switch (format) {
5187 case 0:
5188 rn->SpecificLen = 0;
5189 break;
5190 case RNID_TOPOLOGY_DISC:
5191 rn->SpecificLen = sizeof(RNID_TOP_DISC);
5192 memcpy(&rn->un.topologyDisc.portName,
5193 &vport->fc_portname, sizeof(struct lpfc_name));
5194 rn->un.topologyDisc.unitType = RNID_HBA;
5195 rn->un.topologyDisc.physPort = 0;
5196 rn->un.topologyDisc.attachedNodes = 0;
5197 break;
5198 default:
5199 rn->CommonLen = 0;
5200 rn->SpecificLen = 0;
5201 break;
5202 }
5203
5204 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP,
5205 "Issue ACC RNID: did:x%x flg:x%x refcnt %d",
5206 ndlp->nlp_DID, ndlp->nlp_flag, kref_read(&ndlp->kref));
5207
5208 phba->fc_stat.elsXmitACC++;
5209 elsiocb->iocb_cmpl = lpfc_cmpl_els_rsp;
5210 elsiocb->context1 = lpfc_nlp_get(ndlp);
5211 if (!elsiocb->context1) {
5212 lpfc_els_free_iocb(phba, elsiocb);
5213 return 1;
5214 }
5215
5216 rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
5217 if (rc == IOCB_ERROR) {
5218 lpfc_els_free_iocb(phba, elsiocb);
5219 lpfc_nlp_put(ndlp);
5220 return 1;
5221 }
5222
5223 return 0;
5224 }
5225
5226 /**
5227 * lpfc_els_clear_rrq - Clear the rq that this rrq describes.
5228 * @vport: pointer to a virtual N_Port data structure.
5229 * @iocb: pointer to the lpfc command iocb data structure.
5230 * @ndlp: pointer to a node-list data structure.
5231 *
5232 * Return
5233 **/
5234 static void
lpfc_els_clear_rrq(struct lpfc_vport * vport,struct lpfc_iocbq * iocb,struct lpfc_nodelist * ndlp)5235 lpfc_els_clear_rrq(struct lpfc_vport *vport,
5236 struct lpfc_iocbq *iocb, struct lpfc_nodelist *ndlp)
5237 {
5238 struct lpfc_hba *phba = vport->phba;
5239 uint8_t *pcmd;
5240 struct RRQ *rrq;
5241 uint16_t rxid;
5242 uint16_t xri;
5243 struct lpfc_node_rrq *prrq;
5244
5245
5246 pcmd = (uint8_t *) (((struct lpfc_dmabuf *) iocb->context2)->virt);
5247 pcmd += sizeof(uint32_t);
5248 rrq = (struct RRQ *)pcmd;
5249 rrq->rrq_exchg = be32_to_cpu(rrq->rrq_exchg);
5250 rxid = bf_get(rrq_rxid, rrq);
5251
5252 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
5253 "2883 Clear RRQ for SID:x%x OXID:x%x RXID:x%x"
5254 " x%x x%x\n",
5255 be32_to_cpu(bf_get(rrq_did, rrq)),
5256 bf_get(rrq_oxid, rrq),
5257 rxid,
5258 iocb->iotag, iocb->iocb.ulpContext);
5259
5260 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP,
5261 "Clear RRQ: did:x%x flg:x%x exchg:x%.08x",
5262 ndlp->nlp_DID, ndlp->nlp_flag, rrq->rrq_exchg);
5263 if (vport->fc_myDID == be32_to_cpu(bf_get(rrq_did, rrq)))
5264 xri = bf_get(rrq_oxid, rrq);
5265 else
5266 xri = rxid;
5267 prrq = lpfc_get_active_rrq(vport, xri, ndlp->nlp_DID);
5268 if (prrq)
5269 lpfc_clr_rrq_active(phba, xri, prrq);
5270 return;
5271 }
5272
5273 /**
5274 * lpfc_els_rsp_echo_acc - Issue echo acc response
5275 * @vport: pointer to a virtual N_Port data structure.
5276 * @data: pointer to echo data to return in the accept.
5277 * @oldiocb: pointer to the original lpfc command iocb data structure.
5278 * @ndlp: pointer to a node-list data structure.
5279 *
5280 * Return code
5281 * 0 - Successfully issued acc echo response
5282 * 1 - Failed to issue acc echo response
5283 **/
5284 static int
lpfc_els_rsp_echo_acc(struct lpfc_vport * vport,uint8_t * data,struct lpfc_iocbq * oldiocb,struct lpfc_nodelist * ndlp)5285 lpfc_els_rsp_echo_acc(struct lpfc_vport *vport, uint8_t *data,
5286 struct lpfc_iocbq *oldiocb, struct lpfc_nodelist *ndlp)
5287 {
5288 struct lpfc_hba *phba = vport->phba;
5289 struct lpfc_iocbq *elsiocb;
5290 uint8_t *pcmd;
5291 uint16_t cmdsize;
5292 int rc;
5293
5294 cmdsize = oldiocb->iocb.unsli3.rcvsli3.acc_len;
5295
5296 /* The accumulated length can exceed the BPL_SIZE. For
5297 * now, use this as the limit
5298 */
5299 if (cmdsize > LPFC_BPL_SIZE)
5300 cmdsize = LPFC_BPL_SIZE;
5301 elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry, ndlp,
5302 ndlp->nlp_DID, ELS_CMD_ACC);
5303 if (!elsiocb)
5304 return 1;
5305
5306 elsiocb->iocb.ulpContext = oldiocb->iocb.ulpContext; /* Xri / rx_id */
5307 elsiocb->iocb.unsli3.rcvsli3.ox_id = oldiocb->iocb.unsli3.rcvsli3.ox_id;
5308
5309 /* Xmit ECHO ACC response tag <ulpIoTag> */
5310 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
5311 "2876 Xmit ECHO ACC response tag x%x xri x%x\n",
5312 elsiocb->iotag, elsiocb->iocb.ulpContext);
5313 pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
5314 *((uint32_t *) (pcmd)) = ELS_CMD_ACC;
5315 pcmd += sizeof(uint32_t);
5316 memcpy(pcmd, data, cmdsize - sizeof(uint32_t));
5317
5318 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP,
5319 "Issue ACC ECHO: did:x%x flg:x%x refcnt %d",
5320 ndlp->nlp_DID, ndlp->nlp_flag, kref_read(&ndlp->kref));
5321
5322 phba->fc_stat.elsXmitACC++;
5323 elsiocb->iocb_cmpl = lpfc_cmpl_els_rsp;
5324 elsiocb->context1 = lpfc_nlp_get(ndlp);
5325 if (!elsiocb->context1) {
5326 lpfc_els_free_iocb(phba, elsiocb);
5327 return 1;
5328 }
5329
5330 rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
5331 if (rc == IOCB_ERROR) {
5332 lpfc_els_free_iocb(phba, elsiocb);
5333 lpfc_nlp_put(ndlp);
5334 return 1;
5335 }
5336
5337 return 0;
5338 }
5339
5340 /**
5341 * lpfc_els_disc_adisc - Issue remaining adisc iocbs to npr nodes of a vport
5342 * @vport: pointer to a host virtual N_Port data structure.
5343 *
5344 * This routine issues Address Discover (ADISC) ELS commands to those
5345 * N_Ports which are in node port recovery state and ADISC has not been issued
5346 * for the @vport. Each time an ELS ADISC IOCB is issued by invoking the
5347 * lpfc_issue_els_adisc() routine, the per @vport number of discover count
5348 * (num_disc_nodes) shall be incremented. If the num_disc_nodes reaches a
5349 * pre-configured threshold (cfg_discovery_threads), the @vport fc_flag will
5350 * be marked with FC_NLP_MORE bit and the process of issuing remaining ADISC
5351 * IOCBs quit for later pick up. On the other hand, after walking through
5352 * all the ndlps with the @vport and there is none ADISC IOCB issued, the
5353 * @vport fc_flag shall be cleared with FC_NLP_MORE bit indicating there is
5354 * no more ADISC need to be sent.
5355 *
5356 * Return code
5357 * The number of N_Ports with adisc issued.
5358 **/
5359 int
lpfc_els_disc_adisc(struct lpfc_vport * vport)5360 lpfc_els_disc_adisc(struct lpfc_vport *vport)
5361 {
5362 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
5363 struct lpfc_nodelist *ndlp, *next_ndlp;
5364 int sentadisc = 0;
5365
5366 /* go thru NPR nodes and issue any remaining ELS ADISCs */
5367 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) {
5368 if (ndlp->nlp_state == NLP_STE_NPR_NODE &&
5369 (ndlp->nlp_flag & NLP_NPR_2B_DISC) != 0 &&
5370 (ndlp->nlp_flag & NLP_NPR_ADISC) != 0) {
5371 spin_lock_irq(&ndlp->lock);
5372 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
5373 spin_unlock_irq(&ndlp->lock);
5374 ndlp->nlp_prev_state = ndlp->nlp_state;
5375 lpfc_nlp_set_state(vport, ndlp, NLP_STE_ADISC_ISSUE);
5376 lpfc_issue_els_adisc(vport, ndlp, 0);
5377 sentadisc++;
5378 vport->num_disc_nodes++;
5379 if (vport->num_disc_nodes >=
5380 vport->cfg_discovery_threads) {
5381 spin_lock_irq(shost->host_lock);
5382 vport->fc_flag |= FC_NLP_MORE;
5383 spin_unlock_irq(shost->host_lock);
5384 break;
5385 }
5386 }
5387 }
5388 if (sentadisc == 0) {
5389 spin_lock_irq(shost->host_lock);
5390 vport->fc_flag &= ~FC_NLP_MORE;
5391 spin_unlock_irq(shost->host_lock);
5392 }
5393 return sentadisc;
5394 }
5395
5396 /**
5397 * lpfc_els_disc_plogi - Issue plogi for all npr nodes of a vport before adisc
5398 * @vport: pointer to a host virtual N_Port data structure.
5399 *
5400 * This routine issues Port Login (PLOGI) ELS commands to all the N_Ports
5401 * which are in node port recovery state, with a @vport. Each time an ELS
5402 * ADISC PLOGI IOCB is issued by invoking the lpfc_issue_els_plogi() routine,
5403 * the per @vport number of discover count (num_disc_nodes) shall be
5404 * incremented. If the num_disc_nodes reaches a pre-configured threshold
5405 * (cfg_discovery_threads), the @vport fc_flag will be marked with FC_NLP_MORE
5406 * bit set and quit the process of issuing remaining ADISC PLOGIN IOCBs for
5407 * later pick up. On the other hand, after walking through all the ndlps with
5408 * the @vport and there is none ADISC PLOGI IOCB issued, the @vport fc_flag
5409 * shall be cleared with the FC_NLP_MORE bit indicating there is no more ADISC
5410 * PLOGI need to be sent.
5411 *
5412 * Return code
5413 * The number of N_Ports with plogi issued.
5414 **/
5415 int
lpfc_els_disc_plogi(struct lpfc_vport * vport)5416 lpfc_els_disc_plogi(struct lpfc_vport *vport)
5417 {
5418 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
5419 struct lpfc_nodelist *ndlp, *next_ndlp;
5420 int sentplogi = 0;
5421
5422 /* go thru NPR nodes and issue any remaining ELS PLOGIs */
5423 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) {
5424 if (ndlp->nlp_state == NLP_STE_NPR_NODE &&
5425 (ndlp->nlp_flag & NLP_NPR_2B_DISC) != 0 &&
5426 (ndlp->nlp_flag & NLP_DELAY_TMO) == 0 &&
5427 (ndlp->nlp_flag & NLP_NPR_ADISC) == 0) {
5428 ndlp->nlp_prev_state = ndlp->nlp_state;
5429 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
5430 lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
5431 sentplogi++;
5432 vport->num_disc_nodes++;
5433 if (vport->num_disc_nodes >=
5434 vport->cfg_discovery_threads) {
5435 spin_lock_irq(shost->host_lock);
5436 vport->fc_flag |= FC_NLP_MORE;
5437 spin_unlock_irq(shost->host_lock);
5438 break;
5439 }
5440 }
5441 }
5442
5443 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
5444 "6452 Discover PLOGI %d flag x%x\n",
5445 sentplogi, vport->fc_flag);
5446
5447 if (sentplogi) {
5448 lpfc_set_disctmo(vport);
5449 }
5450 else {
5451 spin_lock_irq(shost->host_lock);
5452 vport->fc_flag &= ~FC_NLP_MORE;
5453 spin_unlock_irq(shost->host_lock);
5454 }
5455 return sentplogi;
5456 }
5457
5458 static uint32_t
lpfc_rdp_res_link_service(struct fc_rdp_link_service_desc * desc,uint32_t word0)5459 lpfc_rdp_res_link_service(struct fc_rdp_link_service_desc *desc,
5460 uint32_t word0)
5461 {
5462
5463 desc->tag = cpu_to_be32(RDP_LINK_SERVICE_DESC_TAG);
5464 desc->payload.els_req = word0;
5465 desc->length = cpu_to_be32(sizeof(desc->payload));
5466
5467 return sizeof(struct fc_rdp_link_service_desc);
5468 }
5469
5470 static uint32_t
lpfc_rdp_res_sfp_desc(struct fc_rdp_sfp_desc * desc,uint8_t * page_a0,uint8_t * page_a2)5471 lpfc_rdp_res_sfp_desc(struct fc_rdp_sfp_desc *desc,
5472 uint8_t *page_a0, uint8_t *page_a2)
5473 {
5474 uint16_t wavelength;
5475 uint16_t temperature;
5476 uint16_t rx_power;
5477 uint16_t tx_bias;
5478 uint16_t tx_power;
5479 uint16_t vcc;
5480 uint16_t flag = 0;
5481 struct sff_trasnceiver_codes_byte4 *trasn_code_byte4;
5482 struct sff_trasnceiver_codes_byte5 *trasn_code_byte5;
5483
5484 desc->tag = cpu_to_be32(RDP_SFP_DESC_TAG);
5485
5486 trasn_code_byte4 = (struct sff_trasnceiver_codes_byte4 *)
5487 &page_a0[SSF_TRANSCEIVER_CODE_B4];
5488 trasn_code_byte5 = (struct sff_trasnceiver_codes_byte5 *)
5489 &page_a0[SSF_TRANSCEIVER_CODE_B5];
5490
5491 if ((trasn_code_byte4->fc_sw_laser) ||
5492 (trasn_code_byte5->fc_sw_laser_sl) ||
5493 (trasn_code_byte5->fc_sw_laser_sn)) { /* check if its short WL */
5494 flag |= (SFP_FLAG_PT_SWLASER << SFP_FLAG_PT_SHIFT);
5495 } else if (trasn_code_byte4->fc_lw_laser) {
5496 wavelength = (page_a0[SSF_WAVELENGTH_B1] << 8) |
5497 page_a0[SSF_WAVELENGTH_B0];
5498 if (wavelength == SFP_WAVELENGTH_LC1310)
5499 flag |= SFP_FLAG_PT_LWLASER_LC1310 << SFP_FLAG_PT_SHIFT;
5500 if (wavelength == SFP_WAVELENGTH_LL1550)
5501 flag |= SFP_FLAG_PT_LWLASER_LL1550 << SFP_FLAG_PT_SHIFT;
5502 }
5503 /* check if its SFP+ */
5504 flag |= ((page_a0[SSF_IDENTIFIER] == SFF_PG0_IDENT_SFP) ?
5505 SFP_FLAG_CT_SFP_PLUS : SFP_FLAG_CT_UNKNOWN)
5506 << SFP_FLAG_CT_SHIFT;
5507
5508 /* check if its OPTICAL */
5509 flag |= ((page_a0[SSF_CONNECTOR] == SFF_PG0_CONNECTOR_LC) ?
5510 SFP_FLAG_IS_OPTICAL_PORT : 0)
5511 << SFP_FLAG_IS_OPTICAL_SHIFT;
5512
5513 temperature = (page_a2[SFF_TEMPERATURE_B1] << 8 |
5514 page_a2[SFF_TEMPERATURE_B0]);
5515 vcc = (page_a2[SFF_VCC_B1] << 8 |
5516 page_a2[SFF_VCC_B0]);
5517 tx_power = (page_a2[SFF_TXPOWER_B1] << 8 |
5518 page_a2[SFF_TXPOWER_B0]);
5519 tx_bias = (page_a2[SFF_TX_BIAS_CURRENT_B1] << 8 |
5520 page_a2[SFF_TX_BIAS_CURRENT_B0]);
5521 rx_power = (page_a2[SFF_RXPOWER_B1] << 8 |
5522 page_a2[SFF_RXPOWER_B0]);
5523 desc->sfp_info.temperature = cpu_to_be16(temperature);
5524 desc->sfp_info.rx_power = cpu_to_be16(rx_power);
5525 desc->sfp_info.tx_bias = cpu_to_be16(tx_bias);
5526 desc->sfp_info.tx_power = cpu_to_be16(tx_power);
5527 desc->sfp_info.vcc = cpu_to_be16(vcc);
5528
5529 desc->sfp_info.flags = cpu_to_be16(flag);
5530 desc->length = cpu_to_be32(sizeof(desc->sfp_info));
5531
5532 return sizeof(struct fc_rdp_sfp_desc);
5533 }
5534
5535 static uint32_t
lpfc_rdp_res_link_error(struct fc_rdp_link_error_status_desc * desc,READ_LNK_VAR * stat)5536 lpfc_rdp_res_link_error(struct fc_rdp_link_error_status_desc *desc,
5537 READ_LNK_VAR *stat)
5538 {
5539 uint32_t type;
5540
5541 desc->tag = cpu_to_be32(RDP_LINK_ERROR_STATUS_DESC_TAG);
5542
5543 type = VN_PT_PHY_PF_PORT << VN_PT_PHY_SHIFT;
5544
5545 desc->info.port_type = cpu_to_be32(type);
5546
5547 desc->info.link_status.link_failure_cnt =
5548 cpu_to_be32(stat->linkFailureCnt);
5549 desc->info.link_status.loss_of_synch_cnt =
5550 cpu_to_be32(stat->lossSyncCnt);
5551 desc->info.link_status.loss_of_signal_cnt =
5552 cpu_to_be32(stat->lossSignalCnt);
5553 desc->info.link_status.primitive_seq_proto_err =
5554 cpu_to_be32(stat->primSeqErrCnt);
5555 desc->info.link_status.invalid_trans_word =
5556 cpu_to_be32(stat->invalidXmitWord);
5557 desc->info.link_status.invalid_crc_cnt = cpu_to_be32(stat->crcCnt);
5558
5559 desc->length = cpu_to_be32(sizeof(desc->info));
5560
5561 return sizeof(struct fc_rdp_link_error_status_desc);
5562 }
5563
5564 static uint32_t
lpfc_rdp_res_bbc_desc(struct fc_rdp_bbc_desc * desc,READ_LNK_VAR * stat,struct lpfc_vport * vport)5565 lpfc_rdp_res_bbc_desc(struct fc_rdp_bbc_desc *desc, READ_LNK_VAR *stat,
5566 struct lpfc_vport *vport)
5567 {
5568 uint32_t bbCredit;
5569
5570 desc->tag = cpu_to_be32(RDP_BBC_DESC_TAG);
5571
5572 bbCredit = vport->fc_sparam.cmn.bbCreditLsb |
5573 (vport->fc_sparam.cmn.bbCreditMsb << 8);
5574 desc->bbc_info.port_bbc = cpu_to_be32(bbCredit);
5575 if (vport->phba->fc_topology != LPFC_TOPOLOGY_LOOP) {
5576 bbCredit = vport->phba->fc_fabparam.cmn.bbCreditLsb |
5577 (vport->phba->fc_fabparam.cmn.bbCreditMsb << 8);
5578 desc->bbc_info.attached_port_bbc = cpu_to_be32(bbCredit);
5579 } else {
5580 desc->bbc_info.attached_port_bbc = 0;
5581 }
5582
5583 desc->bbc_info.rtt = 0;
5584 desc->length = cpu_to_be32(sizeof(desc->bbc_info));
5585
5586 return sizeof(struct fc_rdp_bbc_desc);
5587 }
5588
5589 static uint32_t
lpfc_rdp_res_oed_temp_desc(struct lpfc_hba * phba,struct fc_rdp_oed_sfp_desc * desc,uint8_t * page_a2)5590 lpfc_rdp_res_oed_temp_desc(struct lpfc_hba *phba,
5591 struct fc_rdp_oed_sfp_desc *desc, uint8_t *page_a2)
5592 {
5593 uint32_t flags = 0;
5594
5595 desc->tag = cpu_to_be32(RDP_OED_DESC_TAG);
5596
5597 desc->oed_info.hi_alarm = page_a2[SSF_TEMP_HIGH_ALARM];
5598 desc->oed_info.lo_alarm = page_a2[SSF_TEMP_LOW_ALARM];
5599 desc->oed_info.hi_warning = page_a2[SSF_TEMP_HIGH_WARNING];
5600 desc->oed_info.lo_warning = page_a2[SSF_TEMP_LOW_WARNING];
5601
5602 if (phba->sfp_alarm & LPFC_TRANSGRESSION_HIGH_TEMPERATURE)
5603 flags |= RDP_OET_HIGH_ALARM;
5604 if (phba->sfp_alarm & LPFC_TRANSGRESSION_LOW_TEMPERATURE)
5605 flags |= RDP_OET_LOW_ALARM;
5606 if (phba->sfp_warning & LPFC_TRANSGRESSION_HIGH_TEMPERATURE)
5607 flags |= RDP_OET_HIGH_WARNING;
5608 if (phba->sfp_warning & LPFC_TRANSGRESSION_LOW_TEMPERATURE)
5609 flags |= RDP_OET_LOW_WARNING;
5610
5611 flags |= ((0xf & RDP_OED_TEMPERATURE) << RDP_OED_TYPE_SHIFT);
5612 desc->oed_info.function_flags = cpu_to_be32(flags);
5613 desc->length = cpu_to_be32(sizeof(desc->oed_info));
5614 return sizeof(struct fc_rdp_oed_sfp_desc);
5615 }
5616
5617 static uint32_t
lpfc_rdp_res_oed_voltage_desc(struct lpfc_hba * phba,struct fc_rdp_oed_sfp_desc * desc,uint8_t * page_a2)5618 lpfc_rdp_res_oed_voltage_desc(struct lpfc_hba *phba,
5619 struct fc_rdp_oed_sfp_desc *desc,
5620 uint8_t *page_a2)
5621 {
5622 uint32_t flags = 0;
5623
5624 desc->tag = cpu_to_be32(RDP_OED_DESC_TAG);
5625
5626 desc->oed_info.hi_alarm = page_a2[SSF_VOLTAGE_HIGH_ALARM];
5627 desc->oed_info.lo_alarm = page_a2[SSF_VOLTAGE_LOW_ALARM];
5628 desc->oed_info.hi_warning = page_a2[SSF_VOLTAGE_HIGH_WARNING];
5629 desc->oed_info.lo_warning = page_a2[SSF_VOLTAGE_LOW_WARNING];
5630
5631 if (phba->sfp_alarm & LPFC_TRANSGRESSION_HIGH_VOLTAGE)
5632 flags |= RDP_OET_HIGH_ALARM;
5633 if (phba->sfp_alarm & LPFC_TRANSGRESSION_LOW_VOLTAGE)
5634 flags |= RDP_OET_LOW_ALARM;
5635 if (phba->sfp_warning & LPFC_TRANSGRESSION_HIGH_VOLTAGE)
5636 flags |= RDP_OET_HIGH_WARNING;
5637 if (phba->sfp_warning & LPFC_TRANSGRESSION_LOW_VOLTAGE)
5638 flags |= RDP_OET_LOW_WARNING;
5639
5640 flags |= ((0xf & RDP_OED_VOLTAGE) << RDP_OED_TYPE_SHIFT);
5641 desc->oed_info.function_flags = cpu_to_be32(flags);
5642 desc->length = cpu_to_be32(sizeof(desc->oed_info));
5643 return sizeof(struct fc_rdp_oed_sfp_desc);
5644 }
5645
5646 static uint32_t
lpfc_rdp_res_oed_txbias_desc(struct lpfc_hba * phba,struct fc_rdp_oed_sfp_desc * desc,uint8_t * page_a2)5647 lpfc_rdp_res_oed_txbias_desc(struct lpfc_hba *phba,
5648 struct fc_rdp_oed_sfp_desc *desc,
5649 uint8_t *page_a2)
5650 {
5651 uint32_t flags = 0;
5652
5653 desc->tag = cpu_to_be32(RDP_OED_DESC_TAG);
5654
5655 desc->oed_info.hi_alarm = page_a2[SSF_BIAS_HIGH_ALARM];
5656 desc->oed_info.lo_alarm = page_a2[SSF_BIAS_LOW_ALARM];
5657 desc->oed_info.hi_warning = page_a2[SSF_BIAS_HIGH_WARNING];
5658 desc->oed_info.lo_warning = page_a2[SSF_BIAS_LOW_WARNING];
5659
5660 if (phba->sfp_alarm & LPFC_TRANSGRESSION_HIGH_TXBIAS)
5661 flags |= RDP_OET_HIGH_ALARM;
5662 if (phba->sfp_alarm & LPFC_TRANSGRESSION_LOW_TXBIAS)
5663 flags |= RDP_OET_LOW_ALARM;
5664 if (phba->sfp_warning & LPFC_TRANSGRESSION_HIGH_TXBIAS)
5665 flags |= RDP_OET_HIGH_WARNING;
5666 if (phba->sfp_warning & LPFC_TRANSGRESSION_LOW_TXBIAS)
5667 flags |= RDP_OET_LOW_WARNING;
5668
5669 flags |= ((0xf & RDP_OED_TXBIAS) << RDP_OED_TYPE_SHIFT);
5670 desc->oed_info.function_flags = cpu_to_be32(flags);
5671 desc->length = cpu_to_be32(sizeof(desc->oed_info));
5672 return sizeof(struct fc_rdp_oed_sfp_desc);
5673 }
5674
5675 static uint32_t
lpfc_rdp_res_oed_txpower_desc(struct lpfc_hba * phba,struct fc_rdp_oed_sfp_desc * desc,uint8_t * page_a2)5676 lpfc_rdp_res_oed_txpower_desc(struct lpfc_hba *phba,
5677 struct fc_rdp_oed_sfp_desc *desc,
5678 uint8_t *page_a2)
5679 {
5680 uint32_t flags = 0;
5681
5682 desc->tag = cpu_to_be32(RDP_OED_DESC_TAG);
5683
5684 desc->oed_info.hi_alarm = page_a2[SSF_TXPOWER_HIGH_ALARM];
5685 desc->oed_info.lo_alarm = page_a2[SSF_TXPOWER_LOW_ALARM];
5686 desc->oed_info.hi_warning = page_a2[SSF_TXPOWER_HIGH_WARNING];
5687 desc->oed_info.lo_warning = page_a2[SSF_TXPOWER_LOW_WARNING];
5688
5689 if (phba->sfp_alarm & LPFC_TRANSGRESSION_HIGH_TXPOWER)
5690 flags |= RDP_OET_HIGH_ALARM;
5691 if (phba->sfp_alarm & LPFC_TRANSGRESSION_LOW_TXPOWER)
5692 flags |= RDP_OET_LOW_ALARM;
5693 if (phba->sfp_warning & LPFC_TRANSGRESSION_HIGH_TXPOWER)
5694 flags |= RDP_OET_HIGH_WARNING;
5695 if (phba->sfp_warning & LPFC_TRANSGRESSION_LOW_TXPOWER)
5696 flags |= RDP_OET_LOW_WARNING;
5697
5698 flags |= ((0xf & RDP_OED_TXPOWER) << RDP_OED_TYPE_SHIFT);
5699 desc->oed_info.function_flags = cpu_to_be32(flags);
5700 desc->length = cpu_to_be32(sizeof(desc->oed_info));
5701 return sizeof(struct fc_rdp_oed_sfp_desc);
5702 }
5703
5704
5705 static uint32_t
lpfc_rdp_res_oed_rxpower_desc(struct lpfc_hba * phba,struct fc_rdp_oed_sfp_desc * desc,uint8_t * page_a2)5706 lpfc_rdp_res_oed_rxpower_desc(struct lpfc_hba *phba,
5707 struct fc_rdp_oed_sfp_desc *desc,
5708 uint8_t *page_a2)
5709 {
5710 uint32_t flags = 0;
5711
5712 desc->tag = cpu_to_be32(RDP_OED_DESC_TAG);
5713
5714 desc->oed_info.hi_alarm = page_a2[SSF_RXPOWER_HIGH_ALARM];
5715 desc->oed_info.lo_alarm = page_a2[SSF_RXPOWER_LOW_ALARM];
5716 desc->oed_info.hi_warning = page_a2[SSF_RXPOWER_HIGH_WARNING];
5717 desc->oed_info.lo_warning = page_a2[SSF_RXPOWER_LOW_WARNING];
5718
5719 if (phba->sfp_alarm & LPFC_TRANSGRESSION_HIGH_RXPOWER)
5720 flags |= RDP_OET_HIGH_ALARM;
5721 if (phba->sfp_alarm & LPFC_TRANSGRESSION_LOW_RXPOWER)
5722 flags |= RDP_OET_LOW_ALARM;
5723 if (phba->sfp_warning & LPFC_TRANSGRESSION_HIGH_RXPOWER)
5724 flags |= RDP_OET_HIGH_WARNING;
5725 if (phba->sfp_warning & LPFC_TRANSGRESSION_LOW_RXPOWER)
5726 flags |= RDP_OET_LOW_WARNING;
5727
5728 flags |= ((0xf & RDP_OED_RXPOWER) << RDP_OED_TYPE_SHIFT);
5729 desc->oed_info.function_flags = cpu_to_be32(flags);
5730 desc->length = cpu_to_be32(sizeof(desc->oed_info));
5731 return sizeof(struct fc_rdp_oed_sfp_desc);
5732 }
5733
5734 static uint32_t
lpfc_rdp_res_opd_desc(struct fc_rdp_opd_sfp_desc * desc,uint8_t * page_a0,struct lpfc_vport * vport)5735 lpfc_rdp_res_opd_desc(struct fc_rdp_opd_sfp_desc *desc,
5736 uint8_t *page_a0, struct lpfc_vport *vport)
5737 {
5738 desc->tag = cpu_to_be32(RDP_OPD_DESC_TAG);
5739 memcpy(desc->opd_info.vendor_name, &page_a0[SSF_VENDOR_NAME], 16);
5740 memcpy(desc->opd_info.model_number, &page_a0[SSF_VENDOR_PN], 16);
5741 memcpy(desc->opd_info.serial_number, &page_a0[SSF_VENDOR_SN], 16);
5742 memcpy(desc->opd_info.revision, &page_a0[SSF_VENDOR_REV], 4);
5743 memcpy(desc->opd_info.date, &page_a0[SSF_DATE_CODE], 8);
5744 desc->length = cpu_to_be32(sizeof(desc->opd_info));
5745 return sizeof(struct fc_rdp_opd_sfp_desc);
5746 }
5747
5748 static uint32_t
lpfc_rdp_res_fec_desc(struct fc_fec_rdp_desc * desc,READ_LNK_VAR * stat)5749 lpfc_rdp_res_fec_desc(struct fc_fec_rdp_desc *desc, READ_LNK_VAR *stat)
5750 {
5751 if (bf_get(lpfc_read_link_stat_gec2, stat) == 0)
5752 return 0;
5753 desc->tag = cpu_to_be32(RDP_FEC_DESC_TAG);
5754
5755 desc->info.CorrectedBlocks =
5756 cpu_to_be32(stat->fecCorrBlkCount);
5757 desc->info.UncorrectableBlocks =
5758 cpu_to_be32(stat->fecUncorrBlkCount);
5759
5760 desc->length = cpu_to_be32(sizeof(desc->info));
5761
5762 return sizeof(struct fc_fec_rdp_desc);
5763 }
5764
5765 static uint32_t
lpfc_rdp_res_speed(struct fc_rdp_port_speed_desc * desc,struct lpfc_hba * phba)5766 lpfc_rdp_res_speed(struct fc_rdp_port_speed_desc *desc, struct lpfc_hba *phba)
5767 {
5768 uint16_t rdp_cap = 0;
5769 uint16_t rdp_speed;
5770
5771 desc->tag = cpu_to_be32(RDP_PORT_SPEED_DESC_TAG);
5772
5773 switch (phba->fc_linkspeed) {
5774 case LPFC_LINK_SPEED_1GHZ:
5775 rdp_speed = RDP_PS_1GB;
5776 break;
5777 case LPFC_LINK_SPEED_2GHZ:
5778 rdp_speed = RDP_PS_2GB;
5779 break;
5780 case LPFC_LINK_SPEED_4GHZ:
5781 rdp_speed = RDP_PS_4GB;
5782 break;
5783 case LPFC_LINK_SPEED_8GHZ:
5784 rdp_speed = RDP_PS_8GB;
5785 break;
5786 case LPFC_LINK_SPEED_10GHZ:
5787 rdp_speed = RDP_PS_10GB;
5788 break;
5789 case LPFC_LINK_SPEED_16GHZ:
5790 rdp_speed = RDP_PS_16GB;
5791 break;
5792 case LPFC_LINK_SPEED_32GHZ:
5793 rdp_speed = RDP_PS_32GB;
5794 break;
5795 case LPFC_LINK_SPEED_64GHZ:
5796 rdp_speed = RDP_PS_64GB;
5797 break;
5798 default:
5799 rdp_speed = RDP_PS_UNKNOWN;
5800 break;
5801 }
5802
5803 desc->info.port_speed.speed = cpu_to_be16(rdp_speed);
5804
5805 if (phba->lmt & LMT_128Gb)
5806 rdp_cap |= RDP_PS_128GB;
5807 if (phba->lmt & LMT_64Gb)
5808 rdp_cap |= RDP_PS_64GB;
5809 if (phba->lmt & LMT_32Gb)
5810 rdp_cap |= RDP_PS_32GB;
5811 if (phba->lmt & LMT_16Gb)
5812 rdp_cap |= RDP_PS_16GB;
5813 if (phba->lmt & LMT_10Gb)
5814 rdp_cap |= RDP_PS_10GB;
5815 if (phba->lmt & LMT_8Gb)
5816 rdp_cap |= RDP_PS_8GB;
5817 if (phba->lmt & LMT_4Gb)
5818 rdp_cap |= RDP_PS_4GB;
5819 if (phba->lmt & LMT_2Gb)
5820 rdp_cap |= RDP_PS_2GB;
5821 if (phba->lmt & LMT_1Gb)
5822 rdp_cap |= RDP_PS_1GB;
5823
5824 if (rdp_cap == 0)
5825 rdp_cap = RDP_CAP_UNKNOWN;
5826 if (phba->cfg_link_speed != LPFC_USER_LINK_SPEED_AUTO)
5827 rdp_cap |= RDP_CAP_USER_CONFIGURED;
5828
5829 desc->info.port_speed.capabilities = cpu_to_be16(rdp_cap);
5830 desc->length = cpu_to_be32(sizeof(desc->info));
5831 return sizeof(struct fc_rdp_port_speed_desc);
5832 }
5833
5834 static uint32_t
lpfc_rdp_res_diag_port_names(struct fc_rdp_port_name_desc * desc,struct lpfc_vport * vport)5835 lpfc_rdp_res_diag_port_names(struct fc_rdp_port_name_desc *desc,
5836 struct lpfc_vport *vport)
5837 {
5838
5839 desc->tag = cpu_to_be32(RDP_PORT_NAMES_DESC_TAG);
5840
5841 memcpy(desc->port_names.wwnn, &vport->fc_nodename,
5842 sizeof(desc->port_names.wwnn));
5843
5844 memcpy(desc->port_names.wwpn, &vport->fc_portname,
5845 sizeof(desc->port_names.wwpn));
5846
5847 desc->length = cpu_to_be32(sizeof(desc->port_names));
5848 return sizeof(struct fc_rdp_port_name_desc);
5849 }
5850
5851 static uint32_t
lpfc_rdp_res_attach_port_names(struct fc_rdp_port_name_desc * desc,struct lpfc_vport * vport,struct lpfc_nodelist * ndlp)5852 lpfc_rdp_res_attach_port_names(struct fc_rdp_port_name_desc *desc,
5853 struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
5854 {
5855
5856 desc->tag = cpu_to_be32(RDP_PORT_NAMES_DESC_TAG);
5857 if (vport->fc_flag & FC_FABRIC) {
5858 memcpy(desc->port_names.wwnn, &vport->fabric_nodename,
5859 sizeof(desc->port_names.wwnn));
5860
5861 memcpy(desc->port_names.wwpn, &vport->fabric_portname,
5862 sizeof(desc->port_names.wwpn));
5863 } else { /* Point to Point */
5864 memcpy(desc->port_names.wwnn, &ndlp->nlp_nodename,
5865 sizeof(desc->port_names.wwnn));
5866
5867 memcpy(desc->port_names.wwpn, &ndlp->nlp_portname,
5868 sizeof(desc->port_names.wwpn));
5869 }
5870
5871 desc->length = cpu_to_be32(sizeof(desc->port_names));
5872 return sizeof(struct fc_rdp_port_name_desc);
5873 }
5874
5875 static void
lpfc_els_rdp_cmpl(struct lpfc_hba * phba,struct lpfc_rdp_context * rdp_context,int status)5876 lpfc_els_rdp_cmpl(struct lpfc_hba *phba, struct lpfc_rdp_context *rdp_context,
5877 int status)
5878 {
5879 struct lpfc_nodelist *ndlp = rdp_context->ndlp;
5880 struct lpfc_vport *vport = ndlp->vport;
5881 struct lpfc_iocbq *elsiocb;
5882 struct ulp_bde64 *bpl;
5883 IOCB_t *icmd;
5884 uint8_t *pcmd;
5885 struct ls_rjt *stat;
5886 struct fc_rdp_res_frame *rdp_res;
5887 uint32_t cmdsize, len;
5888 uint16_t *flag_ptr;
5889 int rc;
5890
5891 if (status != SUCCESS)
5892 goto error;
5893
5894 /* This will change once we know the true size of the RDP payload */
5895 cmdsize = sizeof(struct fc_rdp_res_frame);
5896
5897 elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize,
5898 lpfc_max_els_tries, rdp_context->ndlp,
5899 rdp_context->ndlp->nlp_DID, ELS_CMD_ACC);
5900 if (!elsiocb)
5901 goto free_rdp_context;
5902
5903 icmd = &elsiocb->iocb;
5904 icmd->ulpContext = rdp_context->rx_id;
5905 icmd->unsli3.rcvsli3.ox_id = rdp_context->ox_id;
5906
5907 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
5908 "2171 Xmit RDP response tag x%x xri x%x, "
5909 "did x%x, nlp_flag x%x, nlp_state x%x, rpi x%x",
5910 elsiocb->iotag, elsiocb->iocb.ulpContext,
5911 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
5912 ndlp->nlp_rpi);
5913 rdp_res = (struct fc_rdp_res_frame *)
5914 (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
5915 pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
5916 memset(pcmd, 0, sizeof(struct fc_rdp_res_frame));
5917 *((uint32_t *) (pcmd)) = ELS_CMD_ACC;
5918
5919 /* Update Alarm and Warning */
5920 flag_ptr = (uint16_t *)(rdp_context->page_a2 + SSF_ALARM_FLAGS);
5921 phba->sfp_alarm |= *flag_ptr;
5922 flag_ptr = (uint16_t *)(rdp_context->page_a2 + SSF_WARNING_FLAGS);
5923 phba->sfp_warning |= *flag_ptr;
5924
5925 /* For RDP payload */
5926 len = 8;
5927 len += lpfc_rdp_res_link_service((struct fc_rdp_link_service_desc *)
5928 (len + pcmd), ELS_CMD_RDP);
5929
5930 len += lpfc_rdp_res_sfp_desc((struct fc_rdp_sfp_desc *)(len + pcmd),
5931 rdp_context->page_a0, rdp_context->page_a2);
5932 len += lpfc_rdp_res_speed((struct fc_rdp_port_speed_desc *)(len + pcmd),
5933 phba);
5934 len += lpfc_rdp_res_link_error((struct fc_rdp_link_error_status_desc *)
5935 (len + pcmd), &rdp_context->link_stat);
5936 len += lpfc_rdp_res_diag_port_names((struct fc_rdp_port_name_desc *)
5937 (len + pcmd), vport);
5938 len += lpfc_rdp_res_attach_port_names((struct fc_rdp_port_name_desc *)
5939 (len + pcmd), vport, ndlp);
5940 len += lpfc_rdp_res_fec_desc((struct fc_fec_rdp_desc *)(len + pcmd),
5941 &rdp_context->link_stat);
5942 len += lpfc_rdp_res_bbc_desc((struct fc_rdp_bbc_desc *)(len + pcmd),
5943 &rdp_context->link_stat, vport);
5944 len += lpfc_rdp_res_oed_temp_desc(phba,
5945 (struct fc_rdp_oed_sfp_desc *)(len + pcmd),
5946 rdp_context->page_a2);
5947 len += lpfc_rdp_res_oed_voltage_desc(phba,
5948 (struct fc_rdp_oed_sfp_desc *)(len + pcmd),
5949 rdp_context->page_a2);
5950 len += lpfc_rdp_res_oed_txbias_desc(phba,
5951 (struct fc_rdp_oed_sfp_desc *)(len + pcmd),
5952 rdp_context->page_a2);
5953 len += lpfc_rdp_res_oed_txpower_desc(phba,
5954 (struct fc_rdp_oed_sfp_desc *)(len + pcmd),
5955 rdp_context->page_a2);
5956 len += lpfc_rdp_res_oed_rxpower_desc(phba,
5957 (struct fc_rdp_oed_sfp_desc *)(len + pcmd),
5958 rdp_context->page_a2);
5959 len += lpfc_rdp_res_opd_desc((struct fc_rdp_opd_sfp_desc *)(len + pcmd),
5960 rdp_context->page_a0, vport);
5961
5962 rdp_res->length = cpu_to_be32(len - 8);
5963 elsiocb->iocb_cmpl = lpfc_cmpl_els_rsp;
5964
5965 /* Now that we know the true size of the payload, update the BPL */
5966 bpl = (struct ulp_bde64 *)
5967 (((struct lpfc_dmabuf *)(elsiocb->context3))->virt);
5968 bpl->tus.f.bdeSize = len;
5969 bpl->tus.f.bdeFlags = 0;
5970 bpl->tus.w = le32_to_cpu(bpl->tus.w);
5971
5972 phba->fc_stat.elsXmitACC++;
5973 elsiocb->context1 = lpfc_nlp_get(ndlp);
5974 if (!elsiocb->context1) {
5975 lpfc_els_free_iocb(phba, elsiocb);
5976 goto free_rdp_context;
5977 }
5978
5979 rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
5980 if (rc == IOCB_ERROR) {
5981 lpfc_els_free_iocb(phba, elsiocb);
5982 lpfc_nlp_put(ndlp);
5983 }
5984
5985 goto free_rdp_context;
5986
5987 error:
5988 cmdsize = 2 * sizeof(uint32_t);
5989 elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, lpfc_max_els_tries,
5990 ndlp, ndlp->nlp_DID, ELS_CMD_LS_RJT);
5991 if (!elsiocb)
5992 goto free_rdp_context;
5993
5994 icmd = &elsiocb->iocb;
5995 icmd->ulpContext = rdp_context->rx_id;
5996 icmd->unsli3.rcvsli3.ox_id = rdp_context->ox_id;
5997 pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
5998
5999 *((uint32_t *) (pcmd)) = ELS_CMD_LS_RJT;
6000 stat = (struct ls_rjt *)(pcmd + sizeof(uint32_t));
6001 stat->un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
6002
6003 phba->fc_stat.elsXmitLSRJT++;
6004 elsiocb->iocb_cmpl = lpfc_cmpl_els_rsp;
6005 elsiocb->context1 = lpfc_nlp_get(ndlp);
6006 if (!elsiocb->context1) {
6007 lpfc_els_free_iocb(phba, elsiocb);
6008 goto free_rdp_context;
6009 }
6010
6011 rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
6012 if (rc == IOCB_ERROR) {
6013 lpfc_els_free_iocb(phba, elsiocb);
6014 lpfc_nlp_put(ndlp);
6015 }
6016
6017 free_rdp_context:
6018 /* This reference put is for the original unsolicited RDP. If the
6019 * iocb prep failed, there is no reference to remove.
6020 */
6021 lpfc_nlp_put(ndlp);
6022 kfree(rdp_context);
6023 }
6024
6025 static int
lpfc_get_rdp_info(struct lpfc_hba * phba,struct lpfc_rdp_context * rdp_context)6026 lpfc_get_rdp_info(struct lpfc_hba *phba, struct lpfc_rdp_context *rdp_context)
6027 {
6028 LPFC_MBOXQ_t *mbox = NULL;
6029 int rc;
6030
6031 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
6032 if (!mbox) {
6033 lpfc_printf_log(phba, KERN_WARNING, LOG_MBOX | LOG_ELS,
6034 "7105 failed to allocate mailbox memory");
6035 return 1;
6036 }
6037
6038 if (lpfc_sli4_dump_page_a0(phba, mbox))
6039 goto prep_mbox_fail;
6040 mbox->vport = rdp_context->ndlp->vport;
6041 mbox->mbox_cmpl = lpfc_mbx_cmpl_rdp_page_a0;
6042 mbox->ctx_ndlp = (struct lpfc_rdp_context *)rdp_context;
6043 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
6044 if (rc == MBX_NOT_FINISHED)
6045 goto issue_mbox_fail;
6046
6047 return 0;
6048
6049 prep_mbox_fail:
6050 issue_mbox_fail:
6051 mempool_free(mbox, phba->mbox_mem_pool);
6052 return 1;
6053 }
6054
6055 /*
6056 * lpfc_els_rcv_rdp - Process an unsolicited RDP ELS.
6057 * @vport: pointer to a host virtual N_Port data structure.
6058 * @cmdiocb: pointer to lpfc command iocb data structure.
6059 * @ndlp: pointer to a node-list data structure.
6060 *
6061 * This routine processes an unsolicited RDP(Read Diagnostic Parameters)
6062 * IOCB. First, the payload of the unsolicited RDP is checked.
6063 * Then it will (1) send MBX_DUMP_MEMORY, Embedded DMP_LMSD sub command TYPE-3
6064 * for Page A0, (2) send MBX_DUMP_MEMORY, DMP_LMSD for Page A2,
6065 * (3) send MBX_READ_LNK_STAT to get link stat, (4) Call lpfc_els_rdp_cmpl
6066 * gather all data and send RDP response.
6067 *
6068 * Return code
6069 * 0 - Sent the acc response
6070 * 1 - Sent the reject response.
6071 */
6072 static int
lpfc_els_rcv_rdp(struct lpfc_vport * vport,struct lpfc_iocbq * cmdiocb,struct lpfc_nodelist * ndlp)6073 lpfc_els_rcv_rdp(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
6074 struct lpfc_nodelist *ndlp)
6075 {
6076 struct lpfc_hba *phba = vport->phba;
6077 struct lpfc_dmabuf *pcmd;
6078 uint8_t rjt_err, rjt_expl = LSEXP_NOTHING_MORE;
6079 struct fc_rdp_req_frame *rdp_req;
6080 struct lpfc_rdp_context *rdp_context;
6081 IOCB_t *cmd = NULL;
6082 struct ls_rjt stat;
6083
6084 if (phba->sli_rev < LPFC_SLI_REV4 ||
6085 bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) <
6086 LPFC_SLI_INTF_IF_TYPE_2) {
6087 rjt_err = LSRJT_UNABLE_TPC;
6088 rjt_expl = LSEXP_REQ_UNSUPPORTED;
6089 goto error;
6090 }
6091
6092 if (phba->sli_rev < LPFC_SLI_REV4 || (phba->hba_flag & HBA_FCOE_MODE)) {
6093 rjt_err = LSRJT_UNABLE_TPC;
6094 rjt_expl = LSEXP_REQ_UNSUPPORTED;
6095 goto error;
6096 }
6097
6098 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
6099 rdp_req = (struct fc_rdp_req_frame *) pcmd->virt;
6100
6101 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
6102 "2422 ELS RDP Request "
6103 "dec len %d tag x%x port_id %d len %d\n",
6104 be32_to_cpu(rdp_req->rdp_des_length),
6105 be32_to_cpu(rdp_req->nport_id_desc.tag),
6106 be32_to_cpu(rdp_req->nport_id_desc.nport_id),
6107 be32_to_cpu(rdp_req->nport_id_desc.length));
6108
6109 if (sizeof(struct fc_rdp_nport_desc) !=
6110 be32_to_cpu(rdp_req->rdp_des_length))
6111 goto rjt_logerr;
6112 if (RDP_N_PORT_DESC_TAG != be32_to_cpu(rdp_req->nport_id_desc.tag))
6113 goto rjt_logerr;
6114 if (RDP_NPORT_ID_SIZE !=
6115 be32_to_cpu(rdp_req->nport_id_desc.length))
6116 goto rjt_logerr;
6117 rdp_context = kzalloc(sizeof(struct lpfc_rdp_context), GFP_KERNEL);
6118 if (!rdp_context) {
6119 rjt_err = LSRJT_UNABLE_TPC;
6120 goto error;
6121 }
6122
6123 cmd = &cmdiocb->iocb;
6124 rdp_context->ndlp = lpfc_nlp_get(ndlp);
6125 if (!rdp_context->ndlp) {
6126 kfree(rdp_context);
6127 rjt_err = LSRJT_UNABLE_TPC;
6128 goto error;
6129 }
6130 rdp_context->ox_id = cmd->unsli3.rcvsli3.ox_id;
6131 rdp_context->rx_id = cmd->ulpContext;
6132 rdp_context->cmpl = lpfc_els_rdp_cmpl;
6133 if (lpfc_get_rdp_info(phba, rdp_context)) {
6134 lpfc_printf_vlog(ndlp->vport, KERN_WARNING, LOG_ELS,
6135 "2423 Unable to send mailbox");
6136 kfree(rdp_context);
6137 rjt_err = LSRJT_UNABLE_TPC;
6138 lpfc_nlp_put(ndlp);
6139 goto error;
6140 }
6141
6142 return 0;
6143
6144 rjt_logerr:
6145 rjt_err = LSRJT_LOGICAL_ERR;
6146
6147 error:
6148 memset(&stat, 0, sizeof(stat));
6149 stat.un.b.lsRjtRsnCode = rjt_err;
6150 stat.un.b.lsRjtRsnCodeExp = rjt_expl;
6151 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
6152 return 1;
6153 }
6154
6155
6156 static void
lpfc_els_lcb_rsp(struct lpfc_hba * phba,LPFC_MBOXQ_t * pmb)6157 lpfc_els_lcb_rsp(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
6158 {
6159 MAILBOX_t *mb;
6160 IOCB_t *icmd;
6161 uint8_t *pcmd;
6162 struct lpfc_iocbq *elsiocb;
6163 struct lpfc_nodelist *ndlp;
6164 struct ls_rjt *stat;
6165 union lpfc_sli4_cfg_shdr *shdr;
6166 struct lpfc_lcb_context *lcb_context;
6167 struct fc_lcb_res_frame *lcb_res;
6168 uint32_t cmdsize, shdr_status, shdr_add_status;
6169 int rc;
6170
6171 mb = &pmb->u.mb;
6172 lcb_context = (struct lpfc_lcb_context *)pmb->ctx_ndlp;
6173 ndlp = lcb_context->ndlp;
6174 pmb->ctx_ndlp = NULL;
6175 pmb->ctx_buf = NULL;
6176
6177 shdr = (union lpfc_sli4_cfg_shdr *)
6178 &pmb->u.mqe.un.beacon_config.header.cfg_shdr;
6179 shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
6180 shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response);
6181
6182 lpfc_printf_log(phba, KERN_INFO, LOG_MBOX,
6183 "0194 SET_BEACON_CONFIG mailbox "
6184 "completed with status x%x add_status x%x,"
6185 " mbx status x%x\n",
6186 shdr_status, shdr_add_status, mb->mbxStatus);
6187
6188 if ((mb->mbxStatus != MBX_SUCCESS) || shdr_status ||
6189 (shdr_add_status == ADD_STATUS_OPERATION_ALREADY_ACTIVE) ||
6190 (shdr_add_status == ADD_STATUS_INVALID_REQUEST)) {
6191 mempool_free(pmb, phba->mbox_mem_pool);
6192 goto error;
6193 }
6194
6195 mempool_free(pmb, phba->mbox_mem_pool);
6196 cmdsize = sizeof(struct fc_lcb_res_frame);
6197 elsiocb = lpfc_prep_els_iocb(phba->pport, 0, cmdsize,
6198 lpfc_max_els_tries, ndlp,
6199 ndlp->nlp_DID, ELS_CMD_ACC);
6200
6201 /* Decrement the ndlp reference count from previous mbox command */
6202 lpfc_nlp_put(ndlp);
6203
6204 if (!elsiocb)
6205 goto free_lcb_context;
6206
6207 lcb_res = (struct fc_lcb_res_frame *)
6208 (((struct lpfc_dmabuf *)elsiocb->context2)->virt);
6209
6210 memset(lcb_res, 0, sizeof(struct fc_lcb_res_frame));
6211 icmd = &elsiocb->iocb;
6212 icmd->ulpContext = lcb_context->rx_id;
6213 icmd->unsli3.rcvsli3.ox_id = lcb_context->ox_id;
6214
6215 pcmd = (uint8_t *)(((struct lpfc_dmabuf *)elsiocb->context2)->virt);
6216 *((uint32_t *)(pcmd)) = ELS_CMD_ACC;
6217 lcb_res->lcb_sub_command = lcb_context->sub_command;
6218 lcb_res->lcb_type = lcb_context->type;
6219 lcb_res->capability = lcb_context->capability;
6220 lcb_res->lcb_frequency = lcb_context->frequency;
6221 lcb_res->lcb_duration = lcb_context->duration;
6222 elsiocb->iocb_cmpl = lpfc_cmpl_els_rsp;
6223 phba->fc_stat.elsXmitACC++;
6224
6225 elsiocb->context1 = lpfc_nlp_get(ndlp);
6226 if (!elsiocb->context1) {
6227 lpfc_els_free_iocb(phba, elsiocb);
6228 goto out;
6229 }
6230
6231 rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
6232 if (rc == IOCB_ERROR) {
6233 lpfc_els_free_iocb(phba, elsiocb);
6234 lpfc_nlp_put(ndlp);
6235 }
6236 out:
6237 kfree(lcb_context);
6238 return;
6239
6240 error:
6241 cmdsize = sizeof(struct fc_lcb_res_frame);
6242 elsiocb = lpfc_prep_els_iocb(phba->pport, 0, cmdsize,
6243 lpfc_max_els_tries, ndlp,
6244 ndlp->nlp_DID, ELS_CMD_LS_RJT);
6245 lpfc_nlp_put(ndlp);
6246 if (!elsiocb)
6247 goto free_lcb_context;
6248
6249 icmd = &elsiocb->iocb;
6250 icmd->ulpContext = lcb_context->rx_id;
6251 icmd->unsli3.rcvsli3.ox_id = lcb_context->ox_id;
6252 pcmd = (uint8_t *)(((struct lpfc_dmabuf *)elsiocb->context2)->virt);
6253
6254 *((uint32_t *)(pcmd)) = ELS_CMD_LS_RJT;
6255 stat = (struct ls_rjt *)(pcmd + sizeof(uint32_t));
6256 stat->un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
6257
6258 if (shdr_add_status == ADD_STATUS_OPERATION_ALREADY_ACTIVE)
6259 stat->un.b.lsRjtRsnCodeExp = LSEXP_CMD_IN_PROGRESS;
6260
6261 elsiocb->iocb_cmpl = lpfc_cmpl_els_rsp;
6262 phba->fc_stat.elsXmitLSRJT++;
6263 elsiocb->context1 = lpfc_nlp_get(ndlp);
6264 if (!elsiocb->context1) {
6265 lpfc_els_free_iocb(phba, elsiocb);
6266 goto free_lcb_context;
6267 }
6268
6269 rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
6270 if (rc == IOCB_ERROR) {
6271 lpfc_els_free_iocb(phba, elsiocb);
6272 lpfc_nlp_put(ndlp);
6273 }
6274 free_lcb_context:
6275 kfree(lcb_context);
6276 }
6277
6278 static int
lpfc_sli4_set_beacon(struct lpfc_vport * vport,struct lpfc_lcb_context * lcb_context,uint32_t beacon_state)6279 lpfc_sli4_set_beacon(struct lpfc_vport *vport,
6280 struct lpfc_lcb_context *lcb_context,
6281 uint32_t beacon_state)
6282 {
6283 struct lpfc_hba *phba = vport->phba;
6284 union lpfc_sli4_cfg_shdr *cfg_shdr;
6285 LPFC_MBOXQ_t *mbox = NULL;
6286 uint32_t len;
6287 int rc;
6288
6289 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
6290 if (!mbox)
6291 return 1;
6292
6293 cfg_shdr = &mbox->u.mqe.un.sli4_config.header.cfg_shdr;
6294 len = sizeof(struct lpfc_mbx_set_beacon_config) -
6295 sizeof(struct lpfc_sli4_cfg_mhdr);
6296 lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_COMMON,
6297 LPFC_MBOX_OPCODE_SET_BEACON_CONFIG, len,
6298 LPFC_SLI4_MBX_EMBED);
6299 mbox->ctx_ndlp = (void *)lcb_context;
6300 mbox->vport = phba->pport;
6301 mbox->mbox_cmpl = lpfc_els_lcb_rsp;
6302 bf_set(lpfc_mbx_set_beacon_port_num, &mbox->u.mqe.un.beacon_config,
6303 phba->sli4_hba.physical_port);
6304 bf_set(lpfc_mbx_set_beacon_state, &mbox->u.mqe.un.beacon_config,
6305 beacon_state);
6306 mbox->u.mqe.un.beacon_config.word5 = 0; /* Reserved */
6307
6308 /*
6309 * Check bv1s bit before issuing the mailbox
6310 * if bv1s == 1, LCB V1 supported
6311 * else, LCB V0 supported
6312 */
6313
6314 if (phba->sli4_hba.pc_sli4_params.bv1s) {
6315 /* COMMON_SET_BEACON_CONFIG_V1 */
6316 cfg_shdr->request.word9 = BEACON_VERSION_V1;
6317 lcb_context->capability |= LCB_CAPABILITY_DURATION;
6318 bf_set(lpfc_mbx_set_beacon_port_type,
6319 &mbox->u.mqe.un.beacon_config, 0);
6320 bf_set(lpfc_mbx_set_beacon_duration_v1,
6321 &mbox->u.mqe.un.beacon_config,
6322 be16_to_cpu(lcb_context->duration));
6323 } else {
6324 /* COMMON_SET_BEACON_CONFIG_V0 */
6325 if (be16_to_cpu(lcb_context->duration) != 0) {
6326 mempool_free(mbox, phba->mbox_mem_pool);
6327 return 1;
6328 }
6329 cfg_shdr->request.word9 = BEACON_VERSION_V0;
6330 lcb_context->capability &= ~(LCB_CAPABILITY_DURATION);
6331 bf_set(lpfc_mbx_set_beacon_state,
6332 &mbox->u.mqe.un.beacon_config, beacon_state);
6333 bf_set(lpfc_mbx_set_beacon_port_type,
6334 &mbox->u.mqe.un.beacon_config, 1);
6335 bf_set(lpfc_mbx_set_beacon_duration,
6336 &mbox->u.mqe.un.beacon_config,
6337 be16_to_cpu(lcb_context->duration));
6338 }
6339
6340 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
6341 if (rc == MBX_NOT_FINISHED) {
6342 mempool_free(mbox, phba->mbox_mem_pool);
6343 return 1;
6344 }
6345
6346 return 0;
6347 }
6348
6349
6350 /**
6351 * lpfc_els_rcv_lcb - Process an unsolicited LCB
6352 * @vport: pointer to a host virtual N_Port data structure.
6353 * @cmdiocb: pointer to lpfc command iocb data structure.
6354 * @ndlp: pointer to a node-list data structure.
6355 *
6356 * This routine processes an unsolicited LCB(LINK CABLE BEACON) IOCB.
6357 * First, the payload of the unsolicited LCB is checked.
6358 * Then based on Subcommand beacon will either turn on or off.
6359 *
6360 * Return code
6361 * 0 - Sent the acc response
6362 * 1 - Sent the reject response.
6363 **/
6364 static int
lpfc_els_rcv_lcb(struct lpfc_vport * vport,struct lpfc_iocbq * cmdiocb,struct lpfc_nodelist * ndlp)6365 lpfc_els_rcv_lcb(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
6366 struct lpfc_nodelist *ndlp)
6367 {
6368 struct lpfc_hba *phba = vport->phba;
6369 struct lpfc_dmabuf *pcmd;
6370 uint8_t *lp;
6371 struct fc_lcb_request_frame *beacon;
6372 struct lpfc_lcb_context *lcb_context;
6373 u8 state, rjt_err = 0;
6374 struct ls_rjt stat;
6375
6376 pcmd = (struct lpfc_dmabuf *)cmdiocb->context2;
6377 lp = (uint8_t *)pcmd->virt;
6378 beacon = (struct fc_lcb_request_frame *)pcmd->virt;
6379
6380 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
6381 "0192 ELS LCB Data x%x x%x x%x x%x sub x%x "
6382 "type x%x frequency %x duration x%x\n",
6383 lp[0], lp[1], lp[2],
6384 beacon->lcb_command,
6385 beacon->lcb_sub_command,
6386 beacon->lcb_type,
6387 beacon->lcb_frequency,
6388 be16_to_cpu(beacon->lcb_duration));
6389
6390 if (beacon->lcb_sub_command != LPFC_LCB_ON &&
6391 beacon->lcb_sub_command != LPFC_LCB_OFF) {
6392 rjt_err = LSRJT_CMD_UNSUPPORTED;
6393 goto rjt;
6394 }
6395
6396 if (phba->sli_rev < LPFC_SLI_REV4 ||
6397 phba->hba_flag & HBA_FCOE_MODE ||
6398 (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) <
6399 LPFC_SLI_INTF_IF_TYPE_2)) {
6400 rjt_err = LSRJT_CMD_UNSUPPORTED;
6401 goto rjt;
6402 }
6403
6404 lcb_context = kmalloc(sizeof(*lcb_context), GFP_KERNEL);
6405 if (!lcb_context) {
6406 rjt_err = LSRJT_UNABLE_TPC;
6407 goto rjt;
6408 }
6409
6410 state = (beacon->lcb_sub_command == LPFC_LCB_ON) ? 1 : 0;
6411 lcb_context->sub_command = beacon->lcb_sub_command;
6412 lcb_context->capability = 0;
6413 lcb_context->type = beacon->lcb_type;
6414 lcb_context->frequency = beacon->lcb_frequency;
6415 lcb_context->duration = beacon->lcb_duration;
6416 lcb_context->ox_id = cmdiocb->iocb.unsli3.rcvsli3.ox_id;
6417 lcb_context->rx_id = cmdiocb->iocb.ulpContext;
6418 lcb_context->ndlp = lpfc_nlp_get(ndlp);
6419 if (!lcb_context->ndlp) {
6420 rjt_err = LSRJT_UNABLE_TPC;
6421 goto rjt_free;
6422 }
6423
6424 if (lpfc_sli4_set_beacon(vport, lcb_context, state)) {
6425 lpfc_printf_vlog(ndlp->vport, KERN_ERR, LOG_TRACE_EVENT,
6426 "0193 failed to send mail box");
6427 lpfc_nlp_put(ndlp);
6428 rjt_err = LSRJT_UNABLE_TPC;
6429 goto rjt_free;
6430 }
6431 return 0;
6432
6433 rjt_free:
6434 kfree(lcb_context);
6435 rjt:
6436 memset(&stat, 0, sizeof(stat));
6437 stat.un.b.lsRjtRsnCode = rjt_err;
6438 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
6439 return 1;
6440 }
6441
6442
6443 /**
6444 * lpfc_els_flush_rscn - Clean up any rscn activities with a vport
6445 * @vport: pointer to a host virtual N_Port data structure.
6446 *
6447 * This routine cleans up any Registration State Change Notification
6448 * (RSCN) activity with a @vport. Note that the fc_rscn_flush flag of the
6449 * @vport together with the host_lock is used to prevent multiple thread
6450 * trying to access the RSCN array on a same @vport at the same time.
6451 **/
6452 void
lpfc_els_flush_rscn(struct lpfc_vport * vport)6453 lpfc_els_flush_rscn(struct lpfc_vport *vport)
6454 {
6455 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
6456 struct lpfc_hba *phba = vport->phba;
6457 int i;
6458
6459 spin_lock_irq(shost->host_lock);
6460 if (vport->fc_rscn_flush) {
6461 /* Another thread is walking fc_rscn_id_list on this vport */
6462 spin_unlock_irq(shost->host_lock);
6463 return;
6464 }
6465 /* Indicate we are walking lpfc_els_flush_rscn on this vport */
6466 vport->fc_rscn_flush = 1;
6467 spin_unlock_irq(shost->host_lock);
6468
6469 for (i = 0; i < vport->fc_rscn_id_cnt; i++) {
6470 lpfc_in_buf_free(phba, vport->fc_rscn_id_list[i]);
6471 vport->fc_rscn_id_list[i] = NULL;
6472 }
6473 spin_lock_irq(shost->host_lock);
6474 vport->fc_rscn_id_cnt = 0;
6475 vport->fc_flag &= ~(FC_RSCN_MODE | FC_RSCN_DISCOVERY);
6476 spin_unlock_irq(shost->host_lock);
6477 lpfc_can_disctmo(vport);
6478 /* Indicate we are done walking this fc_rscn_id_list */
6479 vport->fc_rscn_flush = 0;
6480 }
6481
6482 /**
6483 * lpfc_rscn_payload_check - Check whether there is a pending rscn to a did
6484 * @vport: pointer to a host virtual N_Port data structure.
6485 * @did: remote destination port identifier.
6486 *
6487 * This routine checks whether there is any pending Registration State
6488 * Configuration Notification (RSCN) to a @did on @vport.
6489 *
6490 * Return code
6491 * None zero - The @did matched with a pending rscn
6492 * 0 - not able to match @did with a pending rscn
6493 **/
6494 int
lpfc_rscn_payload_check(struct lpfc_vport * vport,uint32_t did)6495 lpfc_rscn_payload_check(struct lpfc_vport *vport, uint32_t did)
6496 {
6497 D_ID ns_did;
6498 D_ID rscn_did;
6499 uint32_t *lp;
6500 uint32_t payload_len, i;
6501 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
6502
6503 ns_did.un.word = did;
6504
6505 /* Never match fabric nodes for RSCNs */
6506 if ((did & Fabric_DID_MASK) == Fabric_DID_MASK)
6507 return 0;
6508
6509 /* If we are doing a FULL RSCN rediscovery, match everything */
6510 if (vport->fc_flag & FC_RSCN_DISCOVERY)
6511 return did;
6512
6513 spin_lock_irq(shost->host_lock);
6514 if (vport->fc_rscn_flush) {
6515 /* Another thread is walking fc_rscn_id_list on this vport */
6516 spin_unlock_irq(shost->host_lock);
6517 return 0;
6518 }
6519 /* Indicate we are walking fc_rscn_id_list on this vport */
6520 vport->fc_rscn_flush = 1;
6521 spin_unlock_irq(shost->host_lock);
6522 for (i = 0; i < vport->fc_rscn_id_cnt; i++) {
6523 lp = vport->fc_rscn_id_list[i]->virt;
6524 payload_len = be32_to_cpu(*lp++ & ~ELS_CMD_MASK);
6525 payload_len -= sizeof(uint32_t); /* take off word 0 */
6526 while (payload_len) {
6527 rscn_did.un.word = be32_to_cpu(*lp++);
6528 payload_len -= sizeof(uint32_t);
6529 switch (rscn_did.un.b.resv & RSCN_ADDRESS_FORMAT_MASK) {
6530 case RSCN_ADDRESS_FORMAT_PORT:
6531 if ((ns_did.un.b.domain == rscn_did.un.b.domain)
6532 && (ns_did.un.b.area == rscn_did.un.b.area)
6533 && (ns_did.un.b.id == rscn_did.un.b.id))
6534 goto return_did_out;
6535 break;
6536 case RSCN_ADDRESS_FORMAT_AREA:
6537 if ((ns_did.un.b.domain == rscn_did.un.b.domain)
6538 && (ns_did.un.b.area == rscn_did.un.b.area))
6539 goto return_did_out;
6540 break;
6541 case RSCN_ADDRESS_FORMAT_DOMAIN:
6542 if (ns_did.un.b.domain == rscn_did.un.b.domain)
6543 goto return_did_out;
6544 break;
6545 case RSCN_ADDRESS_FORMAT_FABRIC:
6546 goto return_did_out;
6547 }
6548 }
6549 }
6550 /* Indicate we are done with walking fc_rscn_id_list on this vport */
6551 vport->fc_rscn_flush = 0;
6552 return 0;
6553 return_did_out:
6554 /* Indicate we are done with walking fc_rscn_id_list on this vport */
6555 vport->fc_rscn_flush = 0;
6556 return did;
6557 }
6558
6559 /**
6560 * lpfc_rscn_recovery_check - Send recovery event to vport nodes matching rscn
6561 * @vport: pointer to a host virtual N_Port data structure.
6562 *
6563 * This routine sends recovery (NLP_EVT_DEVICE_RECOVERY) event to the
6564 * state machine for a @vport's nodes that are with pending RSCN (Registration
6565 * State Change Notification).
6566 *
6567 * Return code
6568 * 0 - Successful (currently alway return 0)
6569 **/
6570 static int
lpfc_rscn_recovery_check(struct lpfc_vport * vport)6571 lpfc_rscn_recovery_check(struct lpfc_vport *vport)
6572 {
6573 struct lpfc_nodelist *ndlp = NULL;
6574
6575 /* Move all affected nodes by pending RSCNs to NPR state. */
6576 list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
6577 if ((ndlp->nlp_state == NLP_STE_UNUSED_NODE) ||
6578 !lpfc_rscn_payload_check(vport, ndlp->nlp_DID))
6579 continue;
6580
6581 /* NVME Target mode does not do RSCN Recovery. */
6582 if (vport->phba->nvmet_support)
6583 continue;
6584
6585 /* If we are in the process of doing discovery on this
6586 * NPort, let it continue on its own.
6587 */
6588 switch (ndlp->nlp_state) {
6589 case NLP_STE_PLOGI_ISSUE:
6590 case NLP_STE_ADISC_ISSUE:
6591 case NLP_STE_REG_LOGIN_ISSUE:
6592 case NLP_STE_PRLI_ISSUE:
6593 case NLP_STE_LOGO_ISSUE:
6594 continue;
6595 }
6596
6597 /* Check to see if we need to NVME rescan this target
6598 * remoteport.
6599 */
6600 if (ndlp->nlp_fc4_type & NLP_FC4_NVME &&
6601 ndlp->nlp_type & (NLP_NVME_TARGET | NLP_NVME_DISCOVERY))
6602 lpfc_nvme_rescan_port(vport, ndlp);
6603
6604 lpfc_disc_state_machine(vport, ndlp, NULL,
6605 NLP_EVT_DEVICE_RECOVERY);
6606 lpfc_cancel_retry_delay_tmo(vport, ndlp);
6607 }
6608 return 0;
6609 }
6610
6611 /**
6612 * lpfc_send_rscn_event - Send an RSCN event to management application
6613 * @vport: pointer to a host virtual N_Port data structure.
6614 * @cmdiocb: pointer to lpfc command iocb data structure.
6615 *
6616 * lpfc_send_rscn_event sends an RSCN netlink event to management
6617 * applications.
6618 */
6619 static void
lpfc_send_rscn_event(struct lpfc_vport * vport,struct lpfc_iocbq * cmdiocb)6620 lpfc_send_rscn_event(struct lpfc_vport *vport,
6621 struct lpfc_iocbq *cmdiocb)
6622 {
6623 struct lpfc_dmabuf *pcmd;
6624 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
6625 uint32_t *payload_ptr;
6626 uint32_t payload_len;
6627 struct lpfc_rscn_event_header *rscn_event_data;
6628
6629 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
6630 payload_ptr = (uint32_t *) pcmd->virt;
6631 payload_len = be32_to_cpu(*payload_ptr & ~ELS_CMD_MASK);
6632
6633 rscn_event_data = kmalloc(sizeof(struct lpfc_rscn_event_header) +
6634 payload_len, GFP_KERNEL);
6635 if (!rscn_event_data) {
6636 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
6637 "0147 Failed to allocate memory for RSCN event\n");
6638 return;
6639 }
6640 rscn_event_data->event_type = FC_REG_RSCN_EVENT;
6641 rscn_event_data->payload_length = payload_len;
6642 memcpy(rscn_event_data->rscn_payload, payload_ptr,
6643 payload_len);
6644
6645 fc_host_post_vendor_event(shost,
6646 fc_get_event_number(),
6647 sizeof(struct lpfc_rscn_event_header) + payload_len,
6648 (char *)rscn_event_data,
6649 LPFC_NL_VENDOR_ID);
6650
6651 kfree(rscn_event_data);
6652 }
6653
6654 /**
6655 * lpfc_els_rcv_rscn - Process an unsolicited rscn iocb
6656 * @vport: pointer to a host virtual N_Port data structure.
6657 * @cmdiocb: pointer to lpfc command iocb data structure.
6658 * @ndlp: pointer to a node-list data structure.
6659 *
6660 * This routine processes an unsolicited RSCN (Registration State Change
6661 * Notification) IOCB. First, the payload of the unsolicited RSCN is walked
6662 * to invoke fc_host_post_event() routine to the FC transport layer. If the
6663 * discover state machine is about to begin discovery, it just accepts the
6664 * RSCN and the discovery process will satisfy the RSCN. If this RSCN only
6665 * contains N_Port IDs for other vports on this HBA, it just accepts the
6666 * RSCN and ignore processing it. If the state machine is in the recovery
6667 * state, the fc_rscn_id_list of this @vport is walked and the
6668 * lpfc_rscn_recovery_check() routine is invoked to send recovery event for
6669 * all nodes that match RSCN payload. Otherwise, the lpfc_els_handle_rscn()
6670 * routine is invoked to handle the RSCN event.
6671 *
6672 * Return code
6673 * 0 - Just sent the acc response
6674 * 1 - Sent the acc response and waited for name server completion
6675 **/
6676 static int
lpfc_els_rcv_rscn(struct lpfc_vport * vport,struct lpfc_iocbq * cmdiocb,struct lpfc_nodelist * ndlp)6677 lpfc_els_rcv_rscn(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
6678 struct lpfc_nodelist *ndlp)
6679 {
6680 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
6681 struct lpfc_hba *phba = vport->phba;
6682 struct lpfc_dmabuf *pcmd;
6683 uint32_t *lp, *datap;
6684 uint32_t payload_len, length, nportid, *cmd;
6685 int rscn_cnt;
6686 int rscn_id = 0, hba_id = 0;
6687 int i, tmo;
6688
6689 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
6690 lp = (uint32_t *) pcmd->virt;
6691
6692 payload_len = be32_to_cpu(*lp++ & ~ELS_CMD_MASK);
6693 payload_len -= sizeof(uint32_t); /* take off word 0 */
6694 /* RSCN received */
6695 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
6696 "0214 RSCN received Data: x%x x%x x%x x%x\n",
6697 vport->fc_flag, payload_len, *lp,
6698 vport->fc_rscn_id_cnt);
6699
6700 /* Send an RSCN event to the management application */
6701 lpfc_send_rscn_event(vport, cmdiocb);
6702
6703 for (i = 0; i < payload_len/sizeof(uint32_t); i++)
6704 fc_host_post_event(shost, fc_get_event_number(),
6705 FCH_EVT_RSCN, lp[i]);
6706
6707 /* Check if RSCN is coming from a direct-connected remote NPort */
6708 if (vport->fc_flag & FC_PT2PT) {
6709 /* If so, just ACC it, no other action needed for now */
6710 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
6711 "2024 pt2pt RSCN %08x Data: x%x x%x\n",
6712 *lp, vport->fc_flag, payload_len);
6713 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
6714
6715 /* Check to see if we need to NVME rescan this target
6716 * remoteport.
6717 */
6718 if (ndlp->nlp_fc4_type & NLP_FC4_NVME &&
6719 ndlp->nlp_type & (NLP_NVME_TARGET | NLP_NVME_DISCOVERY))
6720 lpfc_nvme_rescan_port(vport, ndlp);
6721 return 0;
6722 }
6723
6724 /* If we are about to begin discovery, just ACC the RSCN.
6725 * Discovery processing will satisfy it.
6726 */
6727 if (vport->port_state <= LPFC_NS_QRY) {
6728 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
6729 "RCV RSCN ignore: did:x%x/ste:x%x flg:x%x",
6730 ndlp->nlp_DID, vport->port_state, ndlp->nlp_flag);
6731
6732 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
6733 return 0;
6734 }
6735
6736 /* If this RSCN just contains NPortIDs for other vports on this HBA,
6737 * just ACC and ignore it.
6738 */
6739 if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
6740 !(vport->cfg_peer_port_login)) {
6741 i = payload_len;
6742 datap = lp;
6743 while (i > 0) {
6744 nportid = *datap++;
6745 nportid = ((be32_to_cpu(nportid)) & Mask_DID);
6746 i -= sizeof(uint32_t);
6747 rscn_id++;
6748 if (lpfc_find_vport_by_did(phba, nportid))
6749 hba_id++;
6750 }
6751 if (rscn_id == hba_id) {
6752 /* ALL NPortIDs in RSCN are on HBA */
6753 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
6754 "0219 Ignore RSCN "
6755 "Data: x%x x%x x%x x%x\n",
6756 vport->fc_flag, payload_len,
6757 *lp, vport->fc_rscn_id_cnt);
6758 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
6759 "RCV RSCN vport: did:x%x/ste:x%x flg:x%x",
6760 ndlp->nlp_DID, vport->port_state,
6761 ndlp->nlp_flag);
6762
6763 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb,
6764 ndlp, NULL);
6765 return 0;
6766 }
6767 }
6768
6769 spin_lock_irq(shost->host_lock);
6770 if (vport->fc_rscn_flush) {
6771 /* Another thread is walking fc_rscn_id_list on this vport */
6772 vport->fc_flag |= FC_RSCN_DISCOVERY;
6773 spin_unlock_irq(shost->host_lock);
6774 /* Send back ACC */
6775 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
6776 return 0;
6777 }
6778 /* Indicate we are walking fc_rscn_id_list on this vport */
6779 vport->fc_rscn_flush = 1;
6780 spin_unlock_irq(shost->host_lock);
6781 /* Get the array count after successfully have the token */
6782 rscn_cnt = vport->fc_rscn_id_cnt;
6783 /* If we are already processing an RSCN, save the received
6784 * RSCN payload buffer, cmdiocb->context2 to process later.
6785 */
6786 if (vport->fc_flag & (FC_RSCN_MODE | FC_NDISC_ACTIVE)) {
6787 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
6788 "RCV RSCN defer: did:x%x/ste:x%x flg:x%x",
6789 ndlp->nlp_DID, vport->port_state, ndlp->nlp_flag);
6790
6791 spin_lock_irq(shost->host_lock);
6792 vport->fc_flag |= FC_RSCN_DEFERRED;
6793
6794 /* Restart disctmo if its already running */
6795 if (vport->fc_flag & FC_DISC_TMO) {
6796 tmo = ((phba->fc_ratov * 3) + 3);
6797 mod_timer(&vport->fc_disctmo,
6798 jiffies + msecs_to_jiffies(1000 * tmo));
6799 }
6800 if ((rscn_cnt < FC_MAX_HOLD_RSCN) &&
6801 !(vport->fc_flag & FC_RSCN_DISCOVERY)) {
6802 vport->fc_flag |= FC_RSCN_MODE;
6803 spin_unlock_irq(shost->host_lock);
6804 if (rscn_cnt) {
6805 cmd = vport->fc_rscn_id_list[rscn_cnt-1]->virt;
6806 length = be32_to_cpu(*cmd & ~ELS_CMD_MASK);
6807 }
6808 if ((rscn_cnt) &&
6809 (payload_len + length <= LPFC_BPL_SIZE)) {
6810 *cmd &= ELS_CMD_MASK;
6811 *cmd |= cpu_to_be32(payload_len + length);
6812 memcpy(((uint8_t *)cmd) + length, lp,
6813 payload_len);
6814 } else {
6815 vport->fc_rscn_id_list[rscn_cnt] = pcmd;
6816 vport->fc_rscn_id_cnt++;
6817 /* If we zero, cmdiocb->context2, the calling
6818 * routine will not try to free it.
6819 */
6820 cmdiocb->context2 = NULL;
6821 }
6822 /* Deferred RSCN */
6823 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
6824 "0235 Deferred RSCN "
6825 "Data: x%x x%x x%x\n",
6826 vport->fc_rscn_id_cnt, vport->fc_flag,
6827 vport->port_state);
6828 } else {
6829 vport->fc_flag |= FC_RSCN_DISCOVERY;
6830 spin_unlock_irq(shost->host_lock);
6831 /* ReDiscovery RSCN */
6832 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
6833 "0234 ReDiscovery RSCN "
6834 "Data: x%x x%x x%x\n",
6835 vport->fc_rscn_id_cnt, vport->fc_flag,
6836 vport->port_state);
6837 }
6838 /* Indicate we are done walking fc_rscn_id_list on this vport */
6839 vport->fc_rscn_flush = 0;
6840 /* Send back ACC */
6841 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
6842 /* send RECOVERY event for ALL nodes that match RSCN payload */
6843 lpfc_rscn_recovery_check(vport);
6844 return 0;
6845 }
6846 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
6847 "RCV RSCN: did:x%x/ste:x%x flg:x%x",
6848 ndlp->nlp_DID, vport->port_state, ndlp->nlp_flag);
6849
6850 spin_lock_irq(shost->host_lock);
6851 vport->fc_flag |= FC_RSCN_MODE;
6852 spin_unlock_irq(shost->host_lock);
6853 vport->fc_rscn_id_list[vport->fc_rscn_id_cnt++] = pcmd;
6854 /* Indicate we are done walking fc_rscn_id_list on this vport */
6855 vport->fc_rscn_flush = 0;
6856 /*
6857 * If we zero, cmdiocb->context2, the calling routine will
6858 * not try to free it.
6859 */
6860 cmdiocb->context2 = NULL;
6861 lpfc_set_disctmo(vport);
6862 /* Send back ACC */
6863 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
6864 /* send RECOVERY event for ALL nodes that match RSCN payload */
6865 lpfc_rscn_recovery_check(vport);
6866 return lpfc_els_handle_rscn(vport);
6867 }
6868
6869 /**
6870 * lpfc_els_handle_rscn - Handle rscn for a vport
6871 * @vport: pointer to a host virtual N_Port data structure.
6872 *
6873 * This routine handles the Registration State Configuration Notification
6874 * (RSCN) for a @vport. If login to NameServer does not exist, a new ndlp shall
6875 * be created and a Port Login (PLOGI) to the NameServer is issued. Otherwise,
6876 * if the ndlp to NameServer exists, a Common Transport (CT) command to the
6877 * NameServer shall be issued. If CT command to the NameServer fails to be
6878 * issued, the lpfc_els_flush_rscn() routine shall be invoked to clean up any
6879 * RSCN activities with the @vport.
6880 *
6881 * Return code
6882 * 0 - Cleaned up rscn on the @vport
6883 * 1 - Wait for plogi to name server before proceed
6884 **/
6885 int
lpfc_els_handle_rscn(struct lpfc_vport * vport)6886 lpfc_els_handle_rscn(struct lpfc_vport *vport)
6887 {
6888 struct lpfc_nodelist *ndlp;
6889 struct lpfc_hba *phba = vport->phba;
6890
6891 /* Ignore RSCN if the port is being torn down. */
6892 if (vport->load_flag & FC_UNLOADING) {
6893 lpfc_els_flush_rscn(vport);
6894 return 0;
6895 }
6896
6897 /* Start timer for RSCN processing */
6898 lpfc_set_disctmo(vport);
6899
6900 /* RSCN processed */
6901 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
6902 "0215 RSCN processed Data: x%x x%x x%x x%x x%x x%x\n",
6903 vport->fc_flag, 0, vport->fc_rscn_id_cnt,
6904 vport->port_state, vport->num_disc_nodes,
6905 vport->gidft_inp);
6906
6907 /* To process RSCN, first compare RSCN data with NameServer */
6908 vport->fc_ns_retry = 0;
6909 vport->num_disc_nodes = 0;
6910
6911 ndlp = lpfc_findnode_did(vport, NameServer_DID);
6912 if (ndlp && ndlp->nlp_state == NLP_STE_UNMAPPED_NODE) {
6913 /* Good ndlp, issue CT Request to NameServer. Need to
6914 * know how many gidfts were issued. If none, then just
6915 * flush the RSCN. Otherwise, the outstanding requests
6916 * need to complete.
6917 */
6918 if (phba->cfg_ns_query == LPFC_NS_QUERY_GID_FT) {
6919 if (lpfc_issue_gidft(vport) > 0)
6920 return 1;
6921 } else if (phba->cfg_ns_query == LPFC_NS_QUERY_GID_PT) {
6922 if (lpfc_issue_gidpt(vport) > 0)
6923 return 1;
6924 } else {
6925 return 1;
6926 }
6927 } else {
6928 /* Nameserver login in question. Revalidate. */
6929 if (ndlp) {
6930 ndlp->nlp_prev_state = NLP_STE_UNUSED_NODE;
6931 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
6932 } else {
6933 ndlp = lpfc_nlp_init(vport, NameServer_DID);
6934 if (!ndlp) {
6935 lpfc_els_flush_rscn(vport);
6936 return 0;
6937 }
6938 ndlp->nlp_prev_state = ndlp->nlp_state;
6939 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
6940 }
6941 ndlp->nlp_type |= NLP_FABRIC;
6942 lpfc_issue_els_plogi(vport, NameServer_DID, 0);
6943 /* Wait for NameServer login cmpl before we can
6944 * continue
6945 */
6946 return 1;
6947 }
6948
6949 lpfc_els_flush_rscn(vport);
6950 return 0;
6951 }
6952
6953 /**
6954 * lpfc_els_rcv_flogi - Process an unsolicited flogi iocb
6955 * @vport: pointer to a host virtual N_Port data structure.
6956 * @cmdiocb: pointer to lpfc command iocb data structure.
6957 * @ndlp: pointer to a node-list data structure.
6958 *
6959 * This routine processes Fabric Login (FLOGI) IOCB received as an ELS
6960 * unsolicited event. An unsolicited FLOGI can be received in a point-to-
6961 * point topology. As an unsolicited FLOGI should not be received in a loop
6962 * mode, any unsolicited FLOGI received in loop mode shall be ignored. The
6963 * lpfc_check_sparm() routine is invoked to check the parameters in the
6964 * unsolicited FLOGI. If parameters validation failed, the routine
6965 * lpfc_els_rsp_reject() shall be called with reject reason code set to
6966 * LSEXP_SPARM_OPTIONS to reject the FLOGI. Otherwise, the Port WWN in the
6967 * FLOGI shall be compared with the Port WWN of the @vport to determine who
6968 * will initiate PLOGI. The higher lexicographical value party shall has
6969 * higher priority (as the winning port) and will initiate PLOGI and
6970 * communicate Port_IDs (Addresses) for both nodes in PLOGI. The result
6971 * of this will be marked in the @vport fc_flag field with FC_PT2PT_PLOGI
6972 * and then the lpfc_els_rsp_acc() routine is invoked to accept the FLOGI.
6973 *
6974 * Return code
6975 * 0 - Successfully processed the unsolicited flogi
6976 * 1 - Failed to process the unsolicited flogi
6977 **/
6978 static int
lpfc_els_rcv_flogi(struct lpfc_vport * vport,struct lpfc_iocbq * cmdiocb,struct lpfc_nodelist * ndlp)6979 lpfc_els_rcv_flogi(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
6980 struct lpfc_nodelist *ndlp)
6981 {
6982 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
6983 struct lpfc_hba *phba = vport->phba;
6984 struct lpfc_dmabuf *pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
6985 uint32_t *lp = (uint32_t *) pcmd->virt;
6986 IOCB_t *icmd = &cmdiocb->iocb;
6987 struct serv_parm *sp;
6988 LPFC_MBOXQ_t *mbox;
6989 uint32_t cmd, did;
6990 int rc;
6991 uint32_t fc_flag = 0;
6992 uint32_t port_state = 0;
6993
6994 cmd = *lp++;
6995 sp = (struct serv_parm *) lp;
6996
6997 /* FLOGI received */
6998
6999 lpfc_set_disctmo(vport);
7000
7001 if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
7002 /* We should never receive a FLOGI in loop mode, ignore it */
7003 did = icmd->un.elsreq64.remoteID;
7004
7005 /* An FLOGI ELS command <elsCmd> was received from DID <did> in
7006 Loop Mode */
7007 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
7008 "0113 An FLOGI ELS command x%x was "
7009 "received from DID x%x in Loop Mode\n",
7010 cmd, did);
7011 return 1;
7012 }
7013
7014 (void) lpfc_check_sparm(vport, ndlp, sp, CLASS3, 1);
7015
7016 /*
7017 * If our portname is greater than the remote portname,
7018 * then we initiate Nport login.
7019 */
7020
7021 rc = memcmp(&vport->fc_portname, &sp->portName,
7022 sizeof(struct lpfc_name));
7023
7024 if (!rc) {
7025 if (phba->sli_rev < LPFC_SLI_REV4) {
7026 mbox = mempool_alloc(phba->mbox_mem_pool,
7027 GFP_KERNEL);
7028 if (!mbox)
7029 return 1;
7030 lpfc_linkdown(phba);
7031 lpfc_init_link(phba, mbox,
7032 phba->cfg_topology,
7033 phba->cfg_link_speed);
7034 mbox->u.mb.un.varInitLnk.lipsr_AL_PA = 0;
7035 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
7036 mbox->vport = vport;
7037 rc = lpfc_sli_issue_mbox(phba, mbox,
7038 MBX_NOWAIT);
7039 lpfc_set_loopback_flag(phba);
7040 if (rc == MBX_NOT_FINISHED)
7041 mempool_free(mbox, phba->mbox_mem_pool);
7042 return 1;
7043 }
7044
7045 /* abort the flogi coming back to ourselves
7046 * due to external loopback on the port.
7047 */
7048 lpfc_els_abort_flogi(phba);
7049 return 0;
7050
7051 } else if (rc > 0) { /* greater than */
7052 spin_lock_irq(shost->host_lock);
7053 vport->fc_flag |= FC_PT2PT_PLOGI;
7054 spin_unlock_irq(shost->host_lock);
7055
7056 /* If we have the high WWPN we can assign our own
7057 * myDID; otherwise, we have to WAIT for a PLOGI
7058 * from the remote NPort to find out what it
7059 * will be.
7060 */
7061 vport->fc_myDID = PT2PT_LocalID;
7062 } else {
7063 vport->fc_myDID = PT2PT_RemoteID;
7064 }
7065
7066 /*
7067 * The vport state should go to LPFC_FLOGI only
7068 * AFTER we issue a FLOGI, not receive one.
7069 */
7070 spin_lock_irq(shost->host_lock);
7071 fc_flag = vport->fc_flag;
7072 port_state = vport->port_state;
7073 vport->fc_flag |= FC_PT2PT;
7074 vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP);
7075
7076 /* Acking an unsol FLOGI. Count 1 for link bounce
7077 * work-around.
7078 */
7079 vport->rcv_flogi_cnt++;
7080 spin_unlock_irq(shost->host_lock);
7081 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
7082 "3311 Rcv Flogi PS x%x new PS x%x "
7083 "fc_flag x%x new fc_flag x%x\n",
7084 port_state, vport->port_state,
7085 fc_flag, vport->fc_flag);
7086
7087 /*
7088 * We temporarily set fc_myDID to make it look like we are
7089 * a Fabric. This is done just so we end up with the right
7090 * did / sid on the FLOGI ACC rsp.
7091 */
7092 did = vport->fc_myDID;
7093 vport->fc_myDID = Fabric_DID;
7094
7095 memcpy(&phba->fc_fabparam, sp, sizeof(struct serv_parm));
7096
7097 /* Defer ACC response until AFTER we issue a FLOGI */
7098 if (!(phba->hba_flag & HBA_FLOGI_ISSUED)) {
7099 phba->defer_flogi_acc_rx_id = cmdiocb->iocb.ulpContext;
7100 phba->defer_flogi_acc_ox_id =
7101 cmdiocb->iocb.unsli3.rcvsli3.ox_id;
7102
7103 vport->fc_myDID = did;
7104
7105 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
7106 "3344 Deferring FLOGI ACC: rx_id: x%x,"
7107 " ox_id: x%x, hba_flag x%x\n",
7108 phba->defer_flogi_acc_rx_id,
7109 phba->defer_flogi_acc_ox_id, phba->hba_flag);
7110
7111 phba->defer_flogi_acc_flag = true;
7112
7113 return 0;
7114 }
7115
7116 /* Send back ACC */
7117 lpfc_els_rsp_acc(vport, ELS_CMD_FLOGI, cmdiocb, ndlp, NULL);
7118
7119 /* Now lets put fc_myDID back to what its supposed to be */
7120 vport->fc_myDID = did;
7121
7122 return 0;
7123 }
7124
7125 /**
7126 * lpfc_els_rcv_rnid - Process an unsolicited rnid iocb
7127 * @vport: pointer to a host virtual N_Port data structure.
7128 * @cmdiocb: pointer to lpfc command iocb data structure.
7129 * @ndlp: pointer to a node-list data structure.
7130 *
7131 * This routine processes Request Node Identification Data (RNID) IOCB
7132 * received as an ELS unsolicited event. Only when the RNID specified format
7133 * 0x0 or 0xDF (Topology Discovery Specific Node Identification Data)
7134 * present, this routine will invoke the lpfc_els_rsp_rnid_acc() routine to
7135 * Accept (ACC) the RNID ELS command. All the other RNID formats are
7136 * rejected by invoking the lpfc_els_rsp_reject() routine.
7137 *
7138 * Return code
7139 * 0 - Successfully processed rnid iocb (currently always return 0)
7140 **/
7141 static int
lpfc_els_rcv_rnid(struct lpfc_vport * vport,struct lpfc_iocbq * cmdiocb,struct lpfc_nodelist * ndlp)7142 lpfc_els_rcv_rnid(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
7143 struct lpfc_nodelist *ndlp)
7144 {
7145 struct lpfc_dmabuf *pcmd;
7146 uint32_t *lp;
7147 RNID *rn;
7148 struct ls_rjt stat;
7149
7150 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
7151 lp = (uint32_t *) pcmd->virt;
7152
7153 lp++;
7154 rn = (RNID *) lp;
7155
7156 /* RNID received */
7157
7158 switch (rn->Format) {
7159 case 0:
7160 case RNID_TOPOLOGY_DISC:
7161 /* Send back ACC */
7162 lpfc_els_rsp_rnid_acc(vport, rn->Format, cmdiocb, ndlp);
7163 break;
7164 default:
7165 /* Reject this request because format not supported */
7166 stat.un.b.lsRjtRsvd0 = 0;
7167 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
7168 stat.un.b.lsRjtRsnCodeExp = LSEXP_CANT_GIVE_DATA;
7169 stat.un.b.vendorUnique = 0;
7170 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
7171 NULL);
7172 }
7173 return 0;
7174 }
7175
7176 /**
7177 * lpfc_els_rcv_echo - Process an unsolicited echo iocb
7178 * @vport: pointer to a host virtual N_Port data structure.
7179 * @cmdiocb: pointer to lpfc command iocb data structure.
7180 * @ndlp: pointer to a node-list data structure.
7181 *
7182 * Return code
7183 * 0 - Successfully processed echo iocb (currently always return 0)
7184 **/
7185 static int
lpfc_els_rcv_echo(struct lpfc_vport * vport,struct lpfc_iocbq * cmdiocb,struct lpfc_nodelist * ndlp)7186 lpfc_els_rcv_echo(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
7187 struct lpfc_nodelist *ndlp)
7188 {
7189 uint8_t *pcmd;
7190
7191 pcmd = (uint8_t *) (((struct lpfc_dmabuf *) cmdiocb->context2)->virt);
7192
7193 /* skip over first word of echo command to find echo data */
7194 pcmd += sizeof(uint32_t);
7195
7196 lpfc_els_rsp_echo_acc(vport, pcmd, cmdiocb, ndlp);
7197 return 0;
7198 }
7199
7200 /**
7201 * lpfc_els_rcv_lirr - Process an unsolicited lirr iocb
7202 * @vport: pointer to a host virtual N_Port data structure.
7203 * @cmdiocb: pointer to lpfc command iocb data structure.
7204 * @ndlp: pointer to a node-list data structure.
7205 *
7206 * This routine processes a Link Incident Report Registration(LIRR) IOCB
7207 * received as an ELS unsolicited event. Currently, this function just invokes
7208 * the lpfc_els_rsp_reject() routine to reject the LIRR IOCB unconditionally.
7209 *
7210 * Return code
7211 * 0 - Successfully processed lirr iocb (currently always return 0)
7212 **/
7213 static int
lpfc_els_rcv_lirr(struct lpfc_vport * vport,struct lpfc_iocbq * cmdiocb,struct lpfc_nodelist * ndlp)7214 lpfc_els_rcv_lirr(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
7215 struct lpfc_nodelist *ndlp)
7216 {
7217 struct ls_rjt stat;
7218
7219 /* For now, unconditionally reject this command */
7220 stat.un.b.lsRjtRsvd0 = 0;
7221 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
7222 stat.un.b.lsRjtRsnCodeExp = LSEXP_CANT_GIVE_DATA;
7223 stat.un.b.vendorUnique = 0;
7224 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
7225 return 0;
7226 }
7227
7228 /**
7229 * lpfc_els_rcv_rrq - Process an unsolicited rrq iocb
7230 * @vport: pointer to a host virtual N_Port data structure.
7231 * @cmdiocb: pointer to lpfc command iocb data structure.
7232 * @ndlp: pointer to a node-list data structure.
7233 *
7234 * This routine processes a Reinstate Recovery Qualifier (RRQ) IOCB
7235 * received as an ELS unsolicited event. A request to RRQ shall only
7236 * be accepted if the Originator Nx_Port N_Port_ID or the Responder
7237 * Nx_Port N_Port_ID of the target Exchange is the same as the
7238 * N_Port_ID of the Nx_Port that makes the request. If the RRQ is
7239 * not accepted, an LS_RJT with reason code "Unable to perform
7240 * command request" and reason code explanation "Invalid Originator
7241 * S_ID" shall be returned. For now, we just unconditionally accept
7242 * RRQ from the target.
7243 **/
7244 static void
lpfc_els_rcv_rrq(struct lpfc_vport * vport,struct lpfc_iocbq * cmdiocb,struct lpfc_nodelist * ndlp)7245 lpfc_els_rcv_rrq(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
7246 struct lpfc_nodelist *ndlp)
7247 {
7248 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
7249 if (vport->phba->sli_rev == LPFC_SLI_REV4)
7250 lpfc_els_clear_rrq(vport, cmdiocb, ndlp);
7251 }
7252
7253 /**
7254 * lpfc_els_rsp_rls_acc - Completion callbk func for MBX_READ_LNK_STAT mbox cmd
7255 * @phba: pointer to lpfc hba data structure.
7256 * @pmb: pointer to the driver internal queue element for mailbox command.
7257 *
7258 * This routine is the completion callback function for the MBX_READ_LNK_STAT
7259 * mailbox command. This callback function is to actually send the Accept
7260 * (ACC) response to a Read Link Status (RLS) unsolicited IOCB event. It
7261 * collects the link statistics from the completion of the MBX_READ_LNK_STAT
7262 * mailbox command, constructs the RLS response with the link statistics
7263 * collected, and then invokes the lpfc_sli_issue_iocb() routine to send ACC
7264 * response to the RLS.
7265 *
7266 * Note that the ndlp reference count will be incremented by 1 for holding the
7267 * ndlp and the reference to ndlp will be stored into the context1 field of
7268 * the IOCB for the completion callback function to the RLS Accept Response
7269 * ELS IOCB command.
7270 *
7271 **/
7272 static void
lpfc_els_rsp_rls_acc(struct lpfc_hba * phba,LPFC_MBOXQ_t * pmb)7273 lpfc_els_rsp_rls_acc(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
7274 {
7275 int rc = 0;
7276 MAILBOX_t *mb;
7277 IOCB_t *icmd;
7278 struct RLS_RSP *rls_rsp;
7279 uint8_t *pcmd;
7280 struct lpfc_iocbq *elsiocb;
7281 struct lpfc_nodelist *ndlp;
7282 uint16_t oxid;
7283 uint16_t rxid;
7284 uint32_t cmdsize;
7285
7286 mb = &pmb->u.mb;
7287
7288 ndlp = (struct lpfc_nodelist *)pmb->ctx_ndlp;
7289 rxid = (uint16_t)((unsigned long)(pmb->ctx_buf) & 0xffff);
7290 oxid = (uint16_t)(((unsigned long)(pmb->ctx_buf) >> 16) & 0xffff);
7291 pmb->ctx_buf = NULL;
7292 pmb->ctx_ndlp = NULL;
7293
7294 if (mb->mbxStatus) {
7295 mempool_free(pmb, phba->mbox_mem_pool);
7296 return;
7297 }
7298
7299 cmdsize = sizeof(struct RLS_RSP) + sizeof(uint32_t);
7300 elsiocb = lpfc_prep_els_iocb(phba->pport, 0, cmdsize,
7301 lpfc_max_els_tries, ndlp,
7302 ndlp->nlp_DID, ELS_CMD_ACC);
7303
7304 /* Decrement the ndlp reference count from previous mbox command */
7305 lpfc_nlp_put(ndlp);
7306
7307 if (!elsiocb) {
7308 mempool_free(pmb, phba->mbox_mem_pool);
7309 return;
7310 }
7311
7312 icmd = &elsiocb->iocb;
7313 icmd->ulpContext = rxid;
7314 icmd->unsli3.rcvsli3.ox_id = oxid;
7315
7316 pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
7317 *((uint32_t *) (pcmd)) = ELS_CMD_ACC;
7318 pcmd += sizeof(uint32_t); /* Skip past command */
7319 rls_rsp = (struct RLS_RSP *)pcmd;
7320
7321 rls_rsp->linkFailureCnt = cpu_to_be32(mb->un.varRdLnk.linkFailureCnt);
7322 rls_rsp->lossSyncCnt = cpu_to_be32(mb->un.varRdLnk.lossSyncCnt);
7323 rls_rsp->lossSignalCnt = cpu_to_be32(mb->un.varRdLnk.lossSignalCnt);
7324 rls_rsp->primSeqErrCnt = cpu_to_be32(mb->un.varRdLnk.primSeqErrCnt);
7325 rls_rsp->invalidXmitWord = cpu_to_be32(mb->un.varRdLnk.invalidXmitWord);
7326 rls_rsp->crcCnt = cpu_to_be32(mb->un.varRdLnk.crcCnt);
7327 mempool_free(pmb, phba->mbox_mem_pool);
7328 /* Xmit ELS RLS ACC response tag <ulpIoTag> */
7329 lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_ELS,
7330 "2874 Xmit ELS RLS ACC response tag x%x xri x%x, "
7331 "did x%x, nlp_flag x%x, nlp_state x%x, rpi x%x\n",
7332 elsiocb->iotag, elsiocb->iocb.ulpContext,
7333 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
7334 ndlp->nlp_rpi);
7335 elsiocb->iocb_cmpl = lpfc_cmpl_els_rsp;
7336 phba->fc_stat.elsXmitACC++;
7337 elsiocb->context1 = lpfc_nlp_get(ndlp);
7338 if (!elsiocb->context1) {
7339 lpfc_els_free_iocb(phba, elsiocb);
7340 return;
7341 }
7342
7343 rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
7344 if (rc == IOCB_ERROR) {
7345 lpfc_els_free_iocb(phba, elsiocb);
7346 lpfc_nlp_put(ndlp);
7347 }
7348 return;
7349 }
7350
7351 /**
7352 * lpfc_els_rcv_rls - Process an unsolicited rls iocb
7353 * @vport: pointer to a host virtual N_Port data structure.
7354 * @cmdiocb: pointer to lpfc command iocb data structure.
7355 * @ndlp: pointer to a node-list data structure.
7356 *
7357 * This routine processes Read Link Status (RLS) IOCB received as an
7358 * ELS unsolicited event. It first checks the remote port state. If the
7359 * remote port is not in NLP_STE_UNMAPPED_NODE state or NLP_STE_MAPPED_NODE
7360 * state, it invokes the lpfc_els_rsl_reject() routine to send the reject
7361 * response. Otherwise, it issue the MBX_READ_LNK_STAT mailbox command
7362 * for reading the HBA link statistics. It is for the callback function,
7363 * lpfc_els_rsp_rls_acc(), set to the MBX_READ_LNK_STAT mailbox command
7364 * to actually sending out RPL Accept (ACC) response.
7365 *
7366 * Return codes
7367 * 0 - Successfully processed rls iocb (currently always return 0)
7368 **/
7369 static int
lpfc_els_rcv_rls(struct lpfc_vport * vport,struct lpfc_iocbq * cmdiocb,struct lpfc_nodelist * ndlp)7370 lpfc_els_rcv_rls(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
7371 struct lpfc_nodelist *ndlp)
7372 {
7373 struct lpfc_hba *phba = vport->phba;
7374 LPFC_MBOXQ_t *mbox;
7375 struct ls_rjt stat;
7376
7377 if ((ndlp->nlp_state != NLP_STE_UNMAPPED_NODE) &&
7378 (ndlp->nlp_state != NLP_STE_MAPPED_NODE))
7379 /* reject the unsolicited RLS request and done with it */
7380 goto reject_out;
7381
7382 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_ATOMIC);
7383 if (mbox) {
7384 lpfc_read_lnk_stat(phba, mbox);
7385 mbox->ctx_buf = (void *)((unsigned long)
7386 ((cmdiocb->iocb.unsli3.rcvsli3.ox_id << 16) |
7387 cmdiocb->iocb.ulpContext)); /* rx_id */
7388 mbox->ctx_ndlp = lpfc_nlp_get(ndlp);
7389 if (!mbox->ctx_ndlp)
7390 goto node_err;
7391 mbox->vport = vport;
7392 mbox->mbox_cmpl = lpfc_els_rsp_rls_acc;
7393 if (lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT)
7394 != MBX_NOT_FINISHED)
7395 /* Mbox completion will send ELS Response */
7396 return 0;
7397 /* Decrement reference count used for the failed mbox
7398 * command.
7399 */
7400 lpfc_nlp_put(ndlp);
7401 node_err:
7402 mempool_free(mbox, phba->mbox_mem_pool);
7403 }
7404 reject_out:
7405 /* issue rejection response */
7406 stat.un.b.lsRjtRsvd0 = 0;
7407 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
7408 stat.un.b.lsRjtRsnCodeExp = LSEXP_CANT_GIVE_DATA;
7409 stat.un.b.vendorUnique = 0;
7410 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
7411 return 0;
7412 }
7413
7414 /**
7415 * lpfc_els_rcv_rtv - Process an unsolicited rtv iocb
7416 * @vport: pointer to a host virtual N_Port data structure.
7417 * @cmdiocb: pointer to lpfc command iocb data structure.
7418 * @ndlp: pointer to a node-list data structure.
7419 *
7420 * This routine processes Read Timout Value (RTV) IOCB received as an
7421 * ELS unsolicited event. It first checks the remote port state. If the
7422 * remote port is not in NLP_STE_UNMAPPED_NODE state or NLP_STE_MAPPED_NODE
7423 * state, it invokes the lpfc_els_rsl_reject() routine to send the reject
7424 * response. Otherwise, it sends the Accept(ACC) response to a Read Timeout
7425 * Value (RTV) unsolicited IOCB event.
7426 *
7427 * Note that the ndlp reference count will be incremented by 1 for holding the
7428 * ndlp and the reference to ndlp will be stored into the context1 field of
7429 * the IOCB for the completion callback function to the RTV Accept Response
7430 * ELS IOCB command.
7431 *
7432 * Return codes
7433 * 0 - Successfully processed rtv iocb (currently always return 0)
7434 **/
7435 static int
lpfc_els_rcv_rtv(struct lpfc_vport * vport,struct lpfc_iocbq * cmdiocb,struct lpfc_nodelist * ndlp)7436 lpfc_els_rcv_rtv(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
7437 struct lpfc_nodelist *ndlp)
7438 {
7439 int rc = 0;
7440 struct lpfc_hba *phba = vport->phba;
7441 struct ls_rjt stat;
7442 struct RTV_RSP *rtv_rsp;
7443 uint8_t *pcmd;
7444 struct lpfc_iocbq *elsiocb;
7445 uint32_t cmdsize;
7446
7447
7448 if ((ndlp->nlp_state != NLP_STE_UNMAPPED_NODE) &&
7449 (ndlp->nlp_state != NLP_STE_MAPPED_NODE))
7450 /* reject the unsolicited RTV request and done with it */
7451 goto reject_out;
7452
7453 cmdsize = sizeof(struct RTV_RSP) + sizeof(uint32_t);
7454 elsiocb = lpfc_prep_els_iocb(phba->pport, 0, cmdsize,
7455 lpfc_max_els_tries, ndlp,
7456 ndlp->nlp_DID, ELS_CMD_ACC);
7457
7458 if (!elsiocb)
7459 return 1;
7460
7461 pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
7462 *((uint32_t *) (pcmd)) = ELS_CMD_ACC;
7463 pcmd += sizeof(uint32_t); /* Skip past command */
7464
7465 /* use the command's xri in the response */
7466 elsiocb->iocb.ulpContext = cmdiocb->iocb.ulpContext; /* Xri / rx_id */
7467 elsiocb->iocb.unsli3.rcvsli3.ox_id = cmdiocb->iocb.unsli3.rcvsli3.ox_id;
7468
7469 rtv_rsp = (struct RTV_RSP *)pcmd;
7470
7471 /* populate RTV payload */
7472 rtv_rsp->ratov = cpu_to_be32(phba->fc_ratov * 1000); /* report msecs */
7473 rtv_rsp->edtov = cpu_to_be32(phba->fc_edtov);
7474 bf_set(qtov_edtovres, rtv_rsp, phba->fc_edtovResol ? 1 : 0);
7475 bf_set(qtov_rttov, rtv_rsp, 0); /* Field is for FC ONLY */
7476 rtv_rsp->qtov = cpu_to_be32(rtv_rsp->qtov);
7477
7478 /* Xmit ELS RLS ACC response tag <ulpIoTag> */
7479 lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_ELS,
7480 "2875 Xmit ELS RTV ACC response tag x%x xri x%x, "
7481 "did x%x, nlp_flag x%x, nlp_state x%x, rpi x%x, "
7482 "Data: x%x x%x x%x\n",
7483 elsiocb->iotag, elsiocb->iocb.ulpContext,
7484 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
7485 ndlp->nlp_rpi,
7486 rtv_rsp->ratov, rtv_rsp->edtov, rtv_rsp->qtov);
7487 elsiocb->iocb_cmpl = lpfc_cmpl_els_rsp;
7488 phba->fc_stat.elsXmitACC++;
7489 elsiocb->context1 = lpfc_nlp_get(ndlp);
7490 if (!elsiocb->context1) {
7491 lpfc_els_free_iocb(phba, elsiocb);
7492 return 0;
7493 }
7494
7495 rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
7496 if (rc == IOCB_ERROR) {
7497 lpfc_els_free_iocb(phba, elsiocb);
7498 lpfc_nlp_put(ndlp);
7499 }
7500 return 0;
7501
7502 reject_out:
7503 /* issue rejection response */
7504 stat.un.b.lsRjtRsvd0 = 0;
7505 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
7506 stat.un.b.lsRjtRsnCodeExp = LSEXP_CANT_GIVE_DATA;
7507 stat.un.b.vendorUnique = 0;
7508 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
7509 return 0;
7510 }
7511
7512 /* lpfc_issue_els_rrq - Process an unsolicited rrq iocb
7513 * @vport: pointer to a host virtual N_Port data structure.
7514 * @ndlp: pointer to a node-list data structure.
7515 * @did: DID of the target.
7516 * @rrq: Pointer to the rrq struct.
7517 *
7518 * Build a ELS RRQ command and send it to the target. If the issue_iocb is
7519 * Successful the the completion handler will clear the RRQ.
7520 *
7521 * Return codes
7522 * 0 - Successfully sent rrq els iocb.
7523 * 1 - Failed to send rrq els iocb.
7524 **/
7525 static int
lpfc_issue_els_rrq(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,uint32_t did,struct lpfc_node_rrq * rrq)7526 lpfc_issue_els_rrq(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
7527 uint32_t did, struct lpfc_node_rrq *rrq)
7528 {
7529 struct lpfc_hba *phba = vport->phba;
7530 struct RRQ *els_rrq;
7531 struct lpfc_iocbq *elsiocb;
7532 uint8_t *pcmd;
7533 uint16_t cmdsize;
7534 int ret;
7535
7536 if (!ndlp)
7537 return 1;
7538
7539 /* If ndlp is not NULL, we will bump the reference count on it */
7540 cmdsize = (sizeof(uint32_t) + sizeof(struct RRQ));
7541 elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, 0, ndlp, did,
7542 ELS_CMD_RRQ);
7543 if (!elsiocb)
7544 return 1;
7545
7546 pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
7547
7548 /* For RRQ request, remainder of payload is Exchange IDs */
7549 *((uint32_t *) (pcmd)) = ELS_CMD_RRQ;
7550 pcmd += sizeof(uint32_t);
7551 els_rrq = (struct RRQ *) pcmd;
7552
7553 bf_set(rrq_oxid, els_rrq, phba->sli4_hba.xri_ids[rrq->xritag]);
7554 bf_set(rrq_rxid, els_rrq, rrq->rxid);
7555 bf_set(rrq_did, els_rrq, vport->fc_myDID);
7556 els_rrq->rrq = cpu_to_be32(els_rrq->rrq);
7557 els_rrq->rrq_exchg = cpu_to_be32(els_rrq->rrq_exchg);
7558
7559
7560 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
7561 "Issue RRQ: did:x%x",
7562 did, rrq->xritag, rrq->rxid);
7563 elsiocb->context_un.rrq = rrq;
7564 elsiocb->iocb_cmpl = lpfc_cmpl_els_rrq;
7565
7566 lpfc_nlp_get(ndlp);
7567 elsiocb->context1 = ndlp;
7568
7569 ret = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
7570 if (ret == IOCB_ERROR)
7571 goto io_err;
7572 return 0;
7573
7574 io_err:
7575 lpfc_els_free_iocb(phba, elsiocb);
7576 lpfc_nlp_put(ndlp);
7577 return 1;
7578 }
7579
7580 /**
7581 * lpfc_send_rrq - Sends ELS RRQ if needed.
7582 * @phba: pointer to lpfc hba data structure.
7583 * @rrq: pointer to the active rrq.
7584 *
7585 * This routine will call the lpfc_issue_els_rrq if the rrq is
7586 * still active for the xri. If this function returns a failure then
7587 * the caller needs to clean up the RRQ by calling lpfc_clr_active_rrq.
7588 *
7589 * Returns 0 Success.
7590 * 1 Failure.
7591 **/
7592 int
lpfc_send_rrq(struct lpfc_hba * phba,struct lpfc_node_rrq * rrq)7593 lpfc_send_rrq(struct lpfc_hba *phba, struct lpfc_node_rrq *rrq)
7594 {
7595 struct lpfc_nodelist *ndlp = lpfc_findnode_did(rrq->vport,
7596 rrq->nlp_DID);
7597 if (!ndlp)
7598 return 1;
7599
7600 if (lpfc_test_rrq_active(phba, ndlp, rrq->xritag))
7601 return lpfc_issue_els_rrq(rrq->vport, ndlp,
7602 rrq->nlp_DID, rrq);
7603 else
7604 return 1;
7605 }
7606
7607 /**
7608 * lpfc_els_rsp_rpl_acc - Issue an accept rpl els command
7609 * @vport: pointer to a host virtual N_Port data structure.
7610 * @cmdsize: size of the ELS command.
7611 * @oldiocb: pointer to the original lpfc command iocb data structure.
7612 * @ndlp: pointer to a node-list data structure.
7613 *
7614 * This routine issuees an Accept (ACC) Read Port List (RPL) ELS command.
7615 * It is to be called by the lpfc_els_rcv_rpl() routine to accept the RPL.
7616 *
7617 * Note that the ndlp reference count will be incremented by 1 for holding the
7618 * ndlp and the reference to ndlp will be stored into the context1 field of
7619 * the IOCB for the completion callback function to the RPL Accept Response
7620 * ELS command.
7621 *
7622 * Return code
7623 * 0 - Successfully issued ACC RPL ELS command
7624 * 1 - Failed to issue ACC RPL ELS command
7625 **/
7626 static int
lpfc_els_rsp_rpl_acc(struct lpfc_vport * vport,uint16_t cmdsize,struct lpfc_iocbq * oldiocb,struct lpfc_nodelist * ndlp)7627 lpfc_els_rsp_rpl_acc(struct lpfc_vport *vport, uint16_t cmdsize,
7628 struct lpfc_iocbq *oldiocb, struct lpfc_nodelist *ndlp)
7629 {
7630 int rc = 0;
7631 struct lpfc_hba *phba = vport->phba;
7632 IOCB_t *icmd, *oldcmd;
7633 RPL_RSP rpl_rsp;
7634 struct lpfc_iocbq *elsiocb;
7635 uint8_t *pcmd;
7636
7637 elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry, ndlp,
7638 ndlp->nlp_DID, ELS_CMD_ACC);
7639
7640 if (!elsiocb)
7641 return 1;
7642
7643 icmd = &elsiocb->iocb;
7644 oldcmd = &oldiocb->iocb;
7645 icmd->ulpContext = oldcmd->ulpContext; /* Xri / rx_id */
7646 icmd->unsli3.rcvsli3.ox_id = oldcmd->unsli3.rcvsli3.ox_id;
7647
7648 pcmd = (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
7649 *((uint32_t *) (pcmd)) = ELS_CMD_ACC;
7650 pcmd += sizeof(uint16_t);
7651 *((uint16_t *)(pcmd)) = be16_to_cpu(cmdsize);
7652 pcmd += sizeof(uint16_t);
7653
7654 /* Setup the RPL ACC payload */
7655 rpl_rsp.listLen = be32_to_cpu(1);
7656 rpl_rsp.index = 0;
7657 rpl_rsp.port_num_blk.portNum = 0;
7658 rpl_rsp.port_num_blk.portID = be32_to_cpu(vport->fc_myDID);
7659 memcpy(&rpl_rsp.port_num_blk.portName, &vport->fc_portname,
7660 sizeof(struct lpfc_name));
7661 memcpy(pcmd, &rpl_rsp, cmdsize - sizeof(uint32_t));
7662 /* Xmit ELS RPL ACC response tag <ulpIoTag> */
7663 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
7664 "0120 Xmit ELS RPL ACC response tag x%x "
7665 "xri x%x, did x%x, nlp_flag x%x, nlp_state x%x, "
7666 "rpi x%x\n",
7667 elsiocb->iotag, elsiocb->iocb.ulpContext,
7668 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
7669 ndlp->nlp_rpi);
7670 elsiocb->iocb_cmpl = lpfc_cmpl_els_rsp;
7671 phba->fc_stat.elsXmitACC++;
7672 elsiocb->context1 = lpfc_nlp_get(ndlp);
7673 if (!elsiocb->context1) {
7674 lpfc_els_free_iocb(phba, elsiocb);
7675 return 1;
7676 }
7677
7678 rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
7679 if (rc == IOCB_ERROR) {
7680 lpfc_els_free_iocb(phba, elsiocb);
7681 lpfc_nlp_put(ndlp);
7682 return 1;
7683 }
7684
7685 return 0;
7686 }
7687
7688 /**
7689 * lpfc_els_rcv_rpl - Process an unsolicited rpl iocb
7690 * @vport: pointer to a host virtual N_Port data structure.
7691 * @cmdiocb: pointer to lpfc command iocb data structure.
7692 * @ndlp: pointer to a node-list data structure.
7693 *
7694 * This routine processes Read Port List (RPL) IOCB received as an ELS
7695 * unsolicited event. It first checks the remote port state. If the remote
7696 * port is not in NLP_STE_UNMAPPED_NODE and NLP_STE_MAPPED_NODE states, it
7697 * invokes the lpfc_els_rsp_reject() routine to send reject response.
7698 * Otherwise, this routine then invokes the lpfc_els_rsp_rpl_acc() routine
7699 * to accept the RPL.
7700 *
7701 * Return code
7702 * 0 - Successfully processed rpl iocb (currently always return 0)
7703 **/
7704 static int
lpfc_els_rcv_rpl(struct lpfc_vport * vport,struct lpfc_iocbq * cmdiocb,struct lpfc_nodelist * ndlp)7705 lpfc_els_rcv_rpl(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
7706 struct lpfc_nodelist *ndlp)
7707 {
7708 struct lpfc_dmabuf *pcmd;
7709 uint32_t *lp;
7710 uint32_t maxsize;
7711 uint16_t cmdsize;
7712 RPL *rpl;
7713 struct ls_rjt stat;
7714
7715 if ((ndlp->nlp_state != NLP_STE_UNMAPPED_NODE) &&
7716 (ndlp->nlp_state != NLP_STE_MAPPED_NODE)) {
7717 /* issue rejection response */
7718 stat.un.b.lsRjtRsvd0 = 0;
7719 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
7720 stat.un.b.lsRjtRsnCodeExp = LSEXP_CANT_GIVE_DATA;
7721 stat.un.b.vendorUnique = 0;
7722 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
7723 NULL);
7724 /* rejected the unsolicited RPL request and done with it */
7725 return 0;
7726 }
7727
7728 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
7729 lp = (uint32_t *) pcmd->virt;
7730 rpl = (RPL *) (lp + 1);
7731 maxsize = be32_to_cpu(rpl->maxsize);
7732
7733 /* We support only one port */
7734 if ((rpl->index == 0) &&
7735 ((maxsize == 0) ||
7736 ((maxsize * sizeof(uint32_t)) >= sizeof(RPL_RSP)))) {
7737 cmdsize = sizeof(uint32_t) + sizeof(RPL_RSP);
7738 } else {
7739 cmdsize = sizeof(uint32_t) + maxsize * sizeof(uint32_t);
7740 }
7741 lpfc_els_rsp_rpl_acc(vport, cmdsize, cmdiocb, ndlp);
7742
7743 return 0;
7744 }
7745
7746 /**
7747 * lpfc_els_rcv_farp - Process an unsolicited farp request els command
7748 * @vport: pointer to a virtual N_Port data structure.
7749 * @cmdiocb: pointer to lpfc command iocb data structure.
7750 * @ndlp: pointer to a node-list data structure.
7751 *
7752 * This routine processes Fibre Channel Address Resolution Protocol
7753 * (FARP) Request IOCB received as an ELS unsolicited event. Currently,
7754 * the lpfc driver only supports matching on WWPN or WWNN for FARP. As such,
7755 * FARP_MATCH_PORT flag and FARP_MATCH_NODE flag are checked against the
7756 * Match Flag in the FARP request IOCB: if FARP_MATCH_PORT flag is set, the
7757 * remote PortName is compared against the FC PortName stored in the @vport
7758 * data structure; if FARP_MATCH_NODE flag is set, the remote NodeName is
7759 * compared against the FC NodeName stored in the @vport data structure.
7760 * If any of these matches and the FARP_REQUEST_FARPR flag is set in the
7761 * FARP request IOCB Response Flag, the lpfc_issue_els_farpr() routine is
7762 * invoked to send out FARP Response to the remote node. Before sending the
7763 * FARP Response, however, the FARP_REQUEST_PLOGI flag is check in the FARP
7764 * request IOCB Response Flag and, if it is set, the lpfc_issue_els_plogi()
7765 * routine is invoked to log into the remote port first.
7766 *
7767 * Return code
7768 * 0 - Either the FARP Match Mode not supported or successfully processed
7769 **/
7770 static int
lpfc_els_rcv_farp(struct lpfc_vport * vport,struct lpfc_iocbq * cmdiocb,struct lpfc_nodelist * ndlp)7771 lpfc_els_rcv_farp(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
7772 struct lpfc_nodelist *ndlp)
7773 {
7774 struct lpfc_dmabuf *pcmd;
7775 uint32_t *lp;
7776 IOCB_t *icmd;
7777 FARP *fp;
7778 uint32_t cnt, did;
7779
7780 icmd = &cmdiocb->iocb;
7781 did = icmd->un.elsreq64.remoteID;
7782 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
7783 lp = (uint32_t *) pcmd->virt;
7784
7785 lp++;
7786 fp = (FARP *) lp;
7787 /* FARP-REQ received from DID <did> */
7788 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
7789 "0601 FARP-REQ received from DID x%x\n", did);
7790 /* We will only support match on WWPN or WWNN */
7791 if (fp->Mflags & ~(FARP_MATCH_NODE | FARP_MATCH_PORT)) {
7792 return 0;
7793 }
7794
7795 cnt = 0;
7796 /* If this FARP command is searching for my portname */
7797 if (fp->Mflags & FARP_MATCH_PORT) {
7798 if (memcmp(&fp->RportName, &vport->fc_portname,
7799 sizeof(struct lpfc_name)) == 0)
7800 cnt = 1;
7801 }
7802
7803 /* If this FARP command is searching for my nodename */
7804 if (fp->Mflags & FARP_MATCH_NODE) {
7805 if (memcmp(&fp->RnodeName, &vport->fc_nodename,
7806 sizeof(struct lpfc_name)) == 0)
7807 cnt = 1;
7808 }
7809
7810 if (cnt) {
7811 if ((ndlp->nlp_state == NLP_STE_UNMAPPED_NODE) ||
7812 (ndlp->nlp_state == NLP_STE_MAPPED_NODE)) {
7813 /* Log back into the node before sending the FARP. */
7814 if (fp->Rflags & FARP_REQUEST_PLOGI) {
7815 ndlp->nlp_prev_state = ndlp->nlp_state;
7816 lpfc_nlp_set_state(vport, ndlp,
7817 NLP_STE_PLOGI_ISSUE);
7818 lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
7819 }
7820
7821 /* Send a FARP response to that node */
7822 if (fp->Rflags & FARP_REQUEST_FARPR)
7823 lpfc_issue_els_farpr(vport, did, 0);
7824 }
7825 }
7826 return 0;
7827 }
7828
7829 /**
7830 * lpfc_els_rcv_farpr - Process an unsolicited farp response iocb
7831 * @vport: pointer to a host virtual N_Port data structure.
7832 * @cmdiocb: pointer to lpfc command iocb data structure.
7833 * @ndlp: pointer to a node-list data structure.
7834 *
7835 * This routine processes Fibre Channel Address Resolution Protocol
7836 * Response (FARPR) IOCB received as an ELS unsolicited event. It simply
7837 * invokes the lpfc_els_rsp_acc() routine to the remote node to accept
7838 * the FARP response request.
7839 *
7840 * Return code
7841 * 0 - Successfully processed FARPR IOCB (currently always return 0)
7842 **/
7843 static int
lpfc_els_rcv_farpr(struct lpfc_vport * vport,struct lpfc_iocbq * cmdiocb,struct lpfc_nodelist * ndlp)7844 lpfc_els_rcv_farpr(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
7845 struct lpfc_nodelist *ndlp)
7846 {
7847 struct lpfc_dmabuf *pcmd;
7848 uint32_t *lp;
7849 IOCB_t *icmd;
7850 uint32_t did;
7851
7852 icmd = &cmdiocb->iocb;
7853 did = icmd->un.elsreq64.remoteID;
7854 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
7855 lp = (uint32_t *) pcmd->virt;
7856
7857 lp++;
7858 /* FARP-RSP received from DID <did> */
7859 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
7860 "0600 FARP-RSP received from DID x%x\n", did);
7861 /* ACCEPT the Farp resp request */
7862 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
7863
7864 return 0;
7865 }
7866
7867 /**
7868 * lpfc_els_rcv_fan - Process an unsolicited fan iocb command
7869 * @vport: pointer to a host virtual N_Port data structure.
7870 * @cmdiocb: pointer to lpfc command iocb data structure.
7871 * @fan_ndlp: pointer to a node-list data structure.
7872 *
7873 * This routine processes a Fabric Address Notification (FAN) IOCB
7874 * command received as an ELS unsolicited event. The FAN ELS command will
7875 * only be processed on a physical port (i.e., the @vport represents the
7876 * physical port). The fabric NodeName and PortName from the FAN IOCB are
7877 * compared against those in the phba data structure. If any of those is
7878 * different, the lpfc_initial_flogi() routine is invoked to initialize
7879 * Fabric Login (FLOGI) to the fabric to start the discover over. Otherwise,
7880 * if both of those are identical, the lpfc_issue_fabric_reglogin() routine
7881 * is invoked to register login to the fabric.
7882 *
7883 * Return code
7884 * 0 - Successfully processed fan iocb (currently always return 0).
7885 **/
7886 static int
lpfc_els_rcv_fan(struct lpfc_vport * vport,struct lpfc_iocbq * cmdiocb,struct lpfc_nodelist * fan_ndlp)7887 lpfc_els_rcv_fan(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
7888 struct lpfc_nodelist *fan_ndlp)
7889 {
7890 struct lpfc_hba *phba = vport->phba;
7891 uint32_t *lp;
7892 FAN *fp;
7893
7894 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, "0265 FAN received\n");
7895 lp = (uint32_t *)((struct lpfc_dmabuf *)cmdiocb->context2)->virt;
7896 fp = (FAN *) ++lp;
7897 /* FAN received; Fan does not have a reply sequence */
7898 if ((vport == phba->pport) &&
7899 (vport->port_state == LPFC_LOCAL_CFG_LINK)) {
7900 if ((memcmp(&phba->fc_fabparam.nodeName, &fp->FnodeName,
7901 sizeof(struct lpfc_name))) ||
7902 (memcmp(&phba->fc_fabparam.portName, &fp->FportName,
7903 sizeof(struct lpfc_name)))) {
7904 /* This port has switched fabrics. FLOGI is required */
7905 lpfc_issue_init_vfi(vport);
7906 } else {
7907 /* FAN verified - skip FLOGI */
7908 vport->fc_myDID = vport->fc_prevDID;
7909 if (phba->sli_rev < LPFC_SLI_REV4)
7910 lpfc_issue_fabric_reglogin(vport);
7911 else {
7912 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
7913 "3138 Need register VFI: (x%x/%x)\n",
7914 vport->fc_prevDID, vport->fc_myDID);
7915 lpfc_issue_reg_vfi(vport);
7916 }
7917 }
7918 }
7919 return 0;
7920 }
7921
7922 /**
7923 * lpfc_els_timeout - Handler funciton to the els timer
7924 * @t: timer context used to obtain the vport.
7925 *
7926 * This routine is invoked by the ELS timer after timeout. It posts the ELS
7927 * timer timeout event by setting the WORKER_ELS_TMO bit to the work port
7928 * event bitmap and then invokes the lpfc_worker_wake_up() routine to wake
7929 * up the worker thread. It is for the worker thread to invoke the routine
7930 * lpfc_els_timeout_handler() to work on the posted event WORKER_ELS_TMO.
7931 **/
7932 void
lpfc_els_timeout(struct timer_list * t)7933 lpfc_els_timeout(struct timer_list *t)
7934 {
7935 struct lpfc_vport *vport = from_timer(vport, t, els_tmofunc);
7936 struct lpfc_hba *phba = vport->phba;
7937 uint32_t tmo_posted;
7938 unsigned long iflag;
7939
7940 spin_lock_irqsave(&vport->work_port_lock, iflag);
7941 tmo_posted = vport->work_port_events & WORKER_ELS_TMO;
7942 if ((!tmo_posted) && (!(vport->load_flag & FC_UNLOADING)))
7943 vport->work_port_events |= WORKER_ELS_TMO;
7944 spin_unlock_irqrestore(&vport->work_port_lock, iflag);
7945
7946 if ((!tmo_posted) && (!(vport->load_flag & FC_UNLOADING)))
7947 lpfc_worker_wake_up(phba);
7948 return;
7949 }
7950
7951
7952 /**
7953 * lpfc_els_timeout_handler - Process an els timeout event
7954 * @vport: pointer to a virtual N_Port data structure.
7955 *
7956 * This routine is the actual handler function that processes an ELS timeout
7957 * event. It walks the ELS ring to get and abort all the IOCBs (except the
7958 * ABORT/CLOSE/FARP/FARPR/FDISC), which are associated with the @vport by
7959 * invoking the lpfc_sli_issue_abort_iotag() routine.
7960 **/
7961 void
lpfc_els_timeout_handler(struct lpfc_vport * vport)7962 lpfc_els_timeout_handler(struct lpfc_vport *vport)
7963 {
7964 struct lpfc_hba *phba = vport->phba;
7965 struct lpfc_sli_ring *pring;
7966 struct lpfc_iocbq *tmp_iocb, *piocb;
7967 IOCB_t *cmd = NULL;
7968 struct lpfc_dmabuf *pcmd;
7969 uint32_t els_command = 0;
7970 uint32_t timeout;
7971 uint32_t remote_ID = 0xffffffff;
7972 LIST_HEAD(abort_list);
7973
7974
7975 timeout = (uint32_t)(phba->fc_ratov << 1);
7976
7977 pring = lpfc_phba_elsring(phba);
7978 if (unlikely(!pring))
7979 return;
7980
7981 if (phba->pport->load_flag & FC_UNLOADING)
7982 return;
7983
7984 spin_lock_irq(&phba->hbalock);
7985 if (phba->sli_rev == LPFC_SLI_REV4)
7986 spin_lock(&pring->ring_lock);
7987
7988 list_for_each_entry_safe(piocb, tmp_iocb, &pring->txcmplq, list) {
7989 cmd = &piocb->iocb;
7990
7991 if ((piocb->iocb_flag & LPFC_IO_LIBDFC) != 0 ||
7992 piocb->iocb.ulpCommand == CMD_ABORT_XRI_CN ||
7993 piocb->iocb.ulpCommand == CMD_CLOSE_XRI_CN)
7994 continue;
7995
7996 if (piocb->vport != vport)
7997 continue;
7998
7999 pcmd = (struct lpfc_dmabuf *) piocb->context2;
8000 if (pcmd)
8001 els_command = *(uint32_t *) (pcmd->virt);
8002
8003 if (els_command == ELS_CMD_FARP ||
8004 els_command == ELS_CMD_FARPR ||
8005 els_command == ELS_CMD_FDISC)
8006 continue;
8007
8008 if (piocb->drvrTimeout > 0) {
8009 if (piocb->drvrTimeout >= timeout)
8010 piocb->drvrTimeout -= timeout;
8011 else
8012 piocb->drvrTimeout = 0;
8013 continue;
8014 }
8015
8016 remote_ID = 0xffffffff;
8017 if (cmd->ulpCommand != CMD_GEN_REQUEST64_CR)
8018 remote_ID = cmd->un.elsreq64.remoteID;
8019 else {
8020 struct lpfc_nodelist *ndlp;
8021 ndlp = __lpfc_findnode_rpi(vport, cmd->ulpContext);
8022 if (ndlp)
8023 remote_ID = ndlp->nlp_DID;
8024 }
8025 list_add_tail(&piocb->dlist, &abort_list);
8026 }
8027 if (phba->sli_rev == LPFC_SLI_REV4)
8028 spin_unlock(&pring->ring_lock);
8029 spin_unlock_irq(&phba->hbalock);
8030
8031 list_for_each_entry_safe(piocb, tmp_iocb, &abort_list, dlist) {
8032 cmd = &piocb->iocb;
8033 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
8034 "0127 ELS timeout Data: x%x x%x x%x "
8035 "x%x\n", els_command,
8036 remote_ID, cmd->ulpCommand, cmd->ulpIoTag);
8037 spin_lock_irq(&phba->hbalock);
8038 list_del_init(&piocb->dlist);
8039 lpfc_sli_issue_abort_iotag(phba, pring, piocb, NULL);
8040 spin_unlock_irq(&phba->hbalock);
8041 }
8042
8043 /* Make sure HBA is alive */
8044 lpfc_issue_hb_tmo(phba);
8045
8046 if (!list_empty(&pring->txcmplq))
8047 if (!(phba->pport->load_flag & FC_UNLOADING))
8048 mod_timer(&vport->els_tmofunc,
8049 jiffies + msecs_to_jiffies(1000 * timeout));
8050 }
8051
8052 /**
8053 * lpfc_els_flush_cmd - Clean up the outstanding els commands to a vport
8054 * @vport: pointer to a host virtual N_Port data structure.
8055 *
8056 * This routine is used to clean up all the outstanding ELS commands on a
8057 * @vport. It first aborts the @vport by invoking lpfc_fabric_abort_vport()
8058 * routine. After that, it walks the ELS transmit queue to remove all the
8059 * IOCBs with the @vport other than the QUE_RING and ABORT/CLOSE IOCBs. For
8060 * the IOCBs with a non-NULL completion callback function, the callback
8061 * function will be invoked with the status set to IOSTAT_LOCAL_REJECT and
8062 * un.ulpWord[4] set to IOERR_SLI_ABORTED. For IOCBs with a NULL completion
8063 * callback function, the IOCB will simply be released. Finally, it walks
8064 * the ELS transmit completion queue to issue an abort IOCB to any transmit
8065 * completion queue IOCB that is associated with the @vport and is not
8066 * an IOCB from libdfc (i.e., the management plane IOCBs that are not
8067 * part of the discovery state machine) out to HBA by invoking the
8068 * lpfc_sli_issue_abort_iotag() routine. Note that this function issues the
8069 * abort IOCB to any transmit completion queueed IOCB, it does not guarantee
8070 * the IOCBs are aborted when this function returns.
8071 **/
8072 void
lpfc_els_flush_cmd(struct lpfc_vport * vport)8073 lpfc_els_flush_cmd(struct lpfc_vport *vport)
8074 {
8075 LIST_HEAD(abort_list);
8076 struct lpfc_hba *phba = vport->phba;
8077 struct lpfc_sli_ring *pring;
8078 struct lpfc_iocbq *tmp_iocb, *piocb;
8079 IOCB_t *cmd = NULL;
8080 unsigned long iflags = 0;
8081
8082 lpfc_fabric_abort_vport(vport);
8083
8084 /*
8085 * For SLI3, only the hbalock is required. But SLI4 needs to coordinate
8086 * with the ring insert operation. Because lpfc_sli_issue_abort_iotag
8087 * ultimately grabs the ring_lock, the driver must splice the list into
8088 * a working list and release the locks before calling the abort.
8089 */
8090 spin_lock_irqsave(&phba->hbalock, iflags);
8091 pring = lpfc_phba_elsring(phba);
8092
8093 /* Bail out if we've no ELS wq, like in PCI error recovery case. */
8094 if (unlikely(!pring)) {
8095 spin_unlock_irqrestore(&phba->hbalock, iflags);
8096 return;
8097 }
8098
8099 if (phba->sli_rev == LPFC_SLI_REV4)
8100 spin_lock(&pring->ring_lock);
8101
8102 /* First we need to issue aborts to outstanding cmds on txcmpl */
8103 list_for_each_entry_safe(piocb, tmp_iocb, &pring->txcmplq, list) {
8104 if (piocb->iocb_flag & LPFC_IO_LIBDFC)
8105 continue;
8106
8107 if (piocb->vport != vport)
8108 continue;
8109
8110 if (piocb->iocb_flag & LPFC_DRIVER_ABORTED)
8111 continue;
8112
8113 /* On the ELS ring we can have ELS_REQUESTs or
8114 * GEN_REQUESTs waiting for a response.
8115 */
8116 cmd = &piocb->iocb;
8117 if (cmd->ulpCommand == CMD_ELS_REQUEST64_CR) {
8118 list_add_tail(&piocb->dlist, &abort_list);
8119
8120 /* If the link is down when flushing ELS commands
8121 * the firmware will not complete them till after
8122 * the link comes back up. This may confuse
8123 * discovery for the new link up, so we need to
8124 * change the compl routine to just clean up the iocb
8125 * and avoid any retry logic.
8126 */
8127 if (phba->link_state == LPFC_LINK_DOWN)
8128 piocb->iocb_cmpl = lpfc_cmpl_els_link_down;
8129 }
8130 if (cmd->ulpCommand == CMD_GEN_REQUEST64_CR)
8131 list_add_tail(&piocb->dlist, &abort_list);
8132 }
8133
8134 if (phba->sli_rev == LPFC_SLI_REV4)
8135 spin_unlock(&pring->ring_lock);
8136 spin_unlock_irqrestore(&phba->hbalock, iflags);
8137
8138 /* Abort each txcmpl iocb on aborted list and remove the dlist links. */
8139 list_for_each_entry_safe(piocb, tmp_iocb, &abort_list, dlist) {
8140 spin_lock_irqsave(&phba->hbalock, iflags);
8141 list_del_init(&piocb->dlist);
8142 lpfc_sli_issue_abort_iotag(phba, pring, piocb, NULL);
8143 spin_unlock_irqrestore(&phba->hbalock, iflags);
8144 }
8145 /* Make sure HBA is alive */
8146 lpfc_issue_hb_tmo(phba);
8147
8148 if (!list_empty(&abort_list))
8149 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
8150 "3387 abort list for txq not empty\n");
8151 INIT_LIST_HEAD(&abort_list);
8152
8153 spin_lock_irqsave(&phba->hbalock, iflags);
8154 if (phba->sli_rev == LPFC_SLI_REV4)
8155 spin_lock(&pring->ring_lock);
8156
8157 /* No need to abort the txq list,
8158 * just queue them up for lpfc_sli_cancel_iocbs
8159 */
8160 list_for_each_entry_safe(piocb, tmp_iocb, &pring->txq, list) {
8161 cmd = &piocb->iocb;
8162
8163 if (piocb->iocb_flag & LPFC_IO_LIBDFC) {
8164 continue;
8165 }
8166
8167 /* Do not flush out the QUE_RING and ABORT/CLOSE iocbs */
8168 if (cmd->ulpCommand == CMD_QUE_RING_BUF_CN ||
8169 cmd->ulpCommand == CMD_QUE_RING_BUF64_CN ||
8170 cmd->ulpCommand == CMD_CLOSE_XRI_CN ||
8171 cmd->ulpCommand == CMD_ABORT_XRI_CN)
8172 continue;
8173
8174 if (piocb->vport != vport)
8175 continue;
8176
8177 list_del_init(&piocb->list);
8178 list_add_tail(&piocb->list, &abort_list);
8179 }
8180
8181 /* The same holds true for any FLOGI/FDISC on the fabric_iocb_list */
8182 if (vport == phba->pport) {
8183 list_for_each_entry_safe(piocb, tmp_iocb,
8184 &phba->fabric_iocb_list, list) {
8185 cmd = &piocb->iocb;
8186 list_del_init(&piocb->list);
8187 list_add_tail(&piocb->list, &abort_list);
8188 }
8189 }
8190
8191 if (phba->sli_rev == LPFC_SLI_REV4)
8192 spin_unlock(&pring->ring_lock);
8193 spin_unlock_irqrestore(&phba->hbalock, iflags);
8194
8195 /* Cancel all the IOCBs from the completions list */
8196 lpfc_sli_cancel_iocbs(phba, &abort_list,
8197 IOSTAT_LOCAL_REJECT, IOERR_SLI_ABORTED);
8198
8199 return;
8200 }
8201
8202 /**
8203 * lpfc_els_flush_all_cmd - Clean up all the outstanding els commands to a HBA
8204 * @phba: pointer to lpfc hba data structure.
8205 *
8206 * This routine is used to clean up all the outstanding ELS commands on a
8207 * @phba. It first aborts the @phba by invoking the lpfc_fabric_abort_hba()
8208 * routine. After that, it walks the ELS transmit queue to remove all the
8209 * IOCBs to the @phba other than the QUE_RING and ABORT/CLOSE IOCBs. For
8210 * the IOCBs with the completion callback function associated, the callback
8211 * function will be invoked with the status set to IOSTAT_LOCAL_REJECT and
8212 * un.ulpWord[4] set to IOERR_SLI_ABORTED. For IOCBs without the completion
8213 * callback function associated, the IOCB will simply be released. Finally,
8214 * it walks the ELS transmit completion queue to issue an abort IOCB to any
8215 * transmit completion queue IOCB that is not an IOCB from libdfc (i.e., the
8216 * management plane IOCBs that are not part of the discovery state machine)
8217 * out to HBA by invoking the lpfc_sli_issue_abort_iotag() routine.
8218 **/
8219 void
lpfc_els_flush_all_cmd(struct lpfc_hba * phba)8220 lpfc_els_flush_all_cmd(struct lpfc_hba *phba)
8221 {
8222 struct lpfc_vport *vport;
8223
8224 spin_lock_irq(&phba->port_list_lock);
8225 list_for_each_entry(vport, &phba->port_list, listentry)
8226 lpfc_els_flush_cmd(vport);
8227 spin_unlock_irq(&phba->port_list_lock);
8228
8229 return;
8230 }
8231
8232 /**
8233 * lpfc_send_els_failure_event - Posts an ELS command failure event
8234 * @phba: Pointer to hba context object.
8235 * @cmdiocbp: Pointer to command iocb which reported error.
8236 * @rspiocbp: Pointer to response iocb which reported error.
8237 *
8238 * This function sends an event when there is an ELS command
8239 * failure.
8240 **/
8241 void
lpfc_send_els_failure_event(struct lpfc_hba * phba,struct lpfc_iocbq * cmdiocbp,struct lpfc_iocbq * rspiocbp)8242 lpfc_send_els_failure_event(struct lpfc_hba *phba,
8243 struct lpfc_iocbq *cmdiocbp,
8244 struct lpfc_iocbq *rspiocbp)
8245 {
8246 struct lpfc_vport *vport = cmdiocbp->vport;
8247 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
8248 struct lpfc_lsrjt_event lsrjt_event;
8249 struct lpfc_fabric_event_header fabric_event;
8250 struct ls_rjt stat;
8251 struct lpfc_nodelist *ndlp;
8252 uint32_t *pcmd;
8253
8254 ndlp = cmdiocbp->context1;
8255 if (!ndlp)
8256 return;
8257
8258 if (rspiocbp->iocb.ulpStatus == IOSTAT_LS_RJT) {
8259 lsrjt_event.header.event_type = FC_REG_ELS_EVENT;
8260 lsrjt_event.header.subcategory = LPFC_EVENT_LSRJT_RCV;
8261 memcpy(lsrjt_event.header.wwpn, &ndlp->nlp_portname,
8262 sizeof(struct lpfc_name));
8263 memcpy(lsrjt_event.header.wwnn, &ndlp->nlp_nodename,
8264 sizeof(struct lpfc_name));
8265 pcmd = (uint32_t *) (((struct lpfc_dmabuf *)
8266 cmdiocbp->context2)->virt);
8267 lsrjt_event.command = (pcmd != NULL) ? *pcmd : 0;
8268 stat.un.lsRjtError = be32_to_cpu(rspiocbp->iocb.un.ulpWord[4]);
8269 lsrjt_event.reason_code = stat.un.b.lsRjtRsnCode;
8270 lsrjt_event.explanation = stat.un.b.lsRjtRsnCodeExp;
8271 fc_host_post_vendor_event(shost,
8272 fc_get_event_number(),
8273 sizeof(lsrjt_event),
8274 (char *)&lsrjt_event,
8275 LPFC_NL_VENDOR_ID);
8276 return;
8277 }
8278 if ((rspiocbp->iocb.ulpStatus == IOSTAT_NPORT_BSY) ||
8279 (rspiocbp->iocb.ulpStatus == IOSTAT_FABRIC_BSY)) {
8280 fabric_event.event_type = FC_REG_FABRIC_EVENT;
8281 if (rspiocbp->iocb.ulpStatus == IOSTAT_NPORT_BSY)
8282 fabric_event.subcategory = LPFC_EVENT_PORT_BUSY;
8283 else
8284 fabric_event.subcategory = LPFC_EVENT_FABRIC_BUSY;
8285 memcpy(fabric_event.wwpn, &ndlp->nlp_portname,
8286 sizeof(struct lpfc_name));
8287 memcpy(fabric_event.wwnn, &ndlp->nlp_nodename,
8288 sizeof(struct lpfc_name));
8289 fc_host_post_vendor_event(shost,
8290 fc_get_event_number(),
8291 sizeof(fabric_event),
8292 (char *)&fabric_event,
8293 LPFC_NL_VENDOR_ID);
8294 return;
8295 }
8296
8297 }
8298
8299 /**
8300 * lpfc_send_els_event - Posts unsolicited els event
8301 * @vport: Pointer to vport object.
8302 * @ndlp: Pointer FC node object.
8303 * @payload: ELS command code type.
8304 *
8305 * This function posts an event when there is an incoming
8306 * unsolicited ELS command.
8307 **/
8308 static void
lpfc_send_els_event(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,uint32_t * payload)8309 lpfc_send_els_event(struct lpfc_vport *vport,
8310 struct lpfc_nodelist *ndlp,
8311 uint32_t *payload)
8312 {
8313 struct lpfc_els_event_header *els_data = NULL;
8314 struct lpfc_logo_event *logo_data = NULL;
8315 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
8316
8317 if (*payload == ELS_CMD_LOGO) {
8318 logo_data = kmalloc(sizeof(struct lpfc_logo_event), GFP_KERNEL);
8319 if (!logo_data) {
8320 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
8321 "0148 Failed to allocate memory "
8322 "for LOGO event\n");
8323 return;
8324 }
8325 els_data = &logo_data->header;
8326 } else {
8327 els_data = kmalloc(sizeof(struct lpfc_els_event_header),
8328 GFP_KERNEL);
8329 if (!els_data) {
8330 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
8331 "0149 Failed to allocate memory "
8332 "for ELS event\n");
8333 return;
8334 }
8335 }
8336 els_data->event_type = FC_REG_ELS_EVENT;
8337 switch (*payload) {
8338 case ELS_CMD_PLOGI:
8339 els_data->subcategory = LPFC_EVENT_PLOGI_RCV;
8340 break;
8341 case ELS_CMD_PRLO:
8342 els_data->subcategory = LPFC_EVENT_PRLO_RCV;
8343 break;
8344 case ELS_CMD_ADISC:
8345 els_data->subcategory = LPFC_EVENT_ADISC_RCV;
8346 break;
8347 case ELS_CMD_LOGO:
8348 els_data->subcategory = LPFC_EVENT_LOGO_RCV;
8349 /* Copy the WWPN in the LOGO payload */
8350 memcpy(logo_data->logo_wwpn, &payload[2],
8351 sizeof(struct lpfc_name));
8352 break;
8353 default:
8354 kfree(els_data);
8355 return;
8356 }
8357 memcpy(els_data->wwpn, &ndlp->nlp_portname, sizeof(struct lpfc_name));
8358 memcpy(els_data->wwnn, &ndlp->nlp_nodename, sizeof(struct lpfc_name));
8359 if (*payload == ELS_CMD_LOGO) {
8360 fc_host_post_vendor_event(shost,
8361 fc_get_event_number(),
8362 sizeof(struct lpfc_logo_event),
8363 (char *)logo_data,
8364 LPFC_NL_VENDOR_ID);
8365 kfree(logo_data);
8366 } else {
8367 fc_host_post_vendor_event(shost,
8368 fc_get_event_number(),
8369 sizeof(struct lpfc_els_event_header),
8370 (char *)els_data,
8371 LPFC_NL_VENDOR_ID);
8372 kfree(els_data);
8373 }
8374
8375 return;
8376 }
8377
8378
8379 DECLARE_ENUM2STR_LOOKUP(lpfc_get_tlv_dtag_nm, fc_ls_tlv_dtag,
8380 FC_LS_TLV_DTAG_INIT);
8381
8382 DECLARE_ENUM2STR_LOOKUP(lpfc_get_fpin_li_event_nm, fc_fpin_li_event_types,
8383 FC_FPIN_LI_EVT_TYPES_INIT);
8384
8385 /**
8386 * lpfc_els_rcv_fpin_li - Process an FPIN Link Integrity Event.
8387 * @vport: Pointer to vport object.
8388 * @tlv: Pointer to the Link Integrity Notification Descriptor.
8389 *
8390 * This function processes a link integrity FPIN event by
8391 * logging a message
8392 **/
8393 static void
lpfc_els_rcv_fpin_li(struct lpfc_vport * vport,struct fc_tlv_desc * tlv)8394 lpfc_els_rcv_fpin_li(struct lpfc_vport *vport, struct fc_tlv_desc *tlv)
8395 {
8396 struct fc_fn_li_desc *li = (struct fc_fn_li_desc *)tlv;
8397 const char *li_evt_str;
8398 u32 li_evt;
8399
8400 li_evt = be16_to_cpu(li->event_type);
8401 li_evt_str = lpfc_get_fpin_li_event_nm(li_evt);
8402
8403 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
8404 "4680 FPIN Link Integrity %s (x%x) "
8405 "Detecting PN x%016llx Attached PN x%016llx "
8406 "Duration %d mSecs Count %d Port Cnt %d\n",
8407 li_evt_str, li_evt,
8408 be64_to_cpu(li->detecting_wwpn),
8409 be64_to_cpu(li->attached_wwpn),
8410 be32_to_cpu(li->event_threshold),
8411 be32_to_cpu(li->event_count),
8412 be32_to_cpu(li->pname_count));
8413 }
8414
8415 static void
lpfc_els_rcv_fpin(struct lpfc_vport * vport,struct fc_els_fpin * fpin,u32 fpin_length)8416 lpfc_els_rcv_fpin(struct lpfc_vport *vport, struct fc_els_fpin *fpin,
8417 u32 fpin_length)
8418 {
8419 struct fc_tlv_desc *tlv;
8420 const char *dtag_nm;
8421 uint32_t desc_cnt = 0, bytes_remain;
8422 u32 dtag;
8423
8424 /* FPINs handled only if we are in the right discovery state */
8425 if (vport->port_state < LPFC_DISC_AUTH)
8426 return;
8427
8428 /* make sure there is the full fpin header */
8429 if (fpin_length < sizeof(struct fc_els_fpin))
8430 return;
8431
8432 tlv = (struct fc_tlv_desc *)&fpin->fpin_desc[0];
8433 bytes_remain = fpin_length - offsetof(struct fc_els_fpin, fpin_desc);
8434 bytes_remain = min_t(u32, bytes_remain, be32_to_cpu(fpin->desc_len));
8435
8436 /* process each descriptor */
8437 while (bytes_remain >= FC_TLV_DESC_HDR_SZ &&
8438 bytes_remain >= FC_TLV_DESC_SZ_FROM_LENGTH(tlv)) {
8439
8440 dtag = be32_to_cpu(tlv->desc_tag);
8441 switch (dtag) {
8442 case ELS_DTAG_LNK_INTEGRITY:
8443 lpfc_els_rcv_fpin_li(vport, tlv);
8444 break;
8445 default:
8446 dtag_nm = lpfc_get_tlv_dtag_nm(dtag);
8447 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
8448 "4678 skipped FPIN descriptor[%d]: "
8449 "tag x%x (%s)\n",
8450 desc_cnt, dtag, dtag_nm);
8451 break;
8452 }
8453
8454 desc_cnt++;
8455 bytes_remain -= FC_TLV_DESC_SZ_FROM_LENGTH(tlv);
8456 tlv = fc_tlv_next_desc(tlv);
8457 }
8458
8459 fc_host_fpin_rcv(lpfc_shost_from_vport(vport), fpin_length,
8460 (char *)fpin);
8461 }
8462
8463 /**
8464 * lpfc_els_unsol_buffer - Process an unsolicited event data buffer
8465 * @phba: pointer to lpfc hba data structure.
8466 * @pring: pointer to a SLI ring.
8467 * @vport: pointer to a host virtual N_Port data structure.
8468 * @elsiocb: pointer to lpfc els command iocb data structure.
8469 *
8470 * This routine is used for processing the IOCB associated with a unsolicited
8471 * event. It first determines whether there is an existing ndlp that matches
8472 * the DID from the unsolicited IOCB. If not, it will create a new one with
8473 * the DID from the unsolicited IOCB. The ELS command from the unsolicited
8474 * IOCB is then used to invoke the proper routine and to set up proper state
8475 * of the discovery state machine.
8476 **/
8477 static void
lpfc_els_unsol_buffer(struct lpfc_hba * phba,struct lpfc_sli_ring * pring,struct lpfc_vport * vport,struct lpfc_iocbq * elsiocb)8478 lpfc_els_unsol_buffer(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
8479 struct lpfc_vport *vport, struct lpfc_iocbq *elsiocb)
8480 {
8481 struct lpfc_nodelist *ndlp;
8482 struct ls_rjt stat;
8483 uint32_t *payload, payload_len;
8484 uint32_t cmd, did, newnode;
8485 uint8_t rjt_exp, rjt_err = 0, init_link = 0;
8486 IOCB_t *icmd = &elsiocb->iocb;
8487 LPFC_MBOXQ_t *mbox;
8488
8489 if (!vport || !(elsiocb->context2))
8490 goto dropit;
8491
8492 newnode = 0;
8493 payload = ((struct lpfc_dmabuf *)elsiocb->context2)->virt;
8494 payload_len = elsiocb->iocb.unsli3.rcvsli3.acc_len;
8495 cmd = *payload;
8496 if ((phba->sli3_options & LPFC_SLI3_HBQ_ENABLED) == 0)
8497 lpfc_post_buffer(phba, pring, 1);
8498
8499 did = icmd->un.rcvels.remoteID;
8500 if (icmd->ulpStatus) {
8501 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
8502 "RCV Unsol ELS: status:x%x/x%x did:x%x",
8503 icmd->ulpStatus, icmd->un.ulpWord[4], did);
8504 goto dropit;
8505 }
8506
8507 /* Check to see if link went down during discovery */
8508 if (lpfc_els_chk_latt(vport))
8509 goto dropit;
8510
8511 /* Ignore traffic received during vport shutdown. */
8512 if (vport->load_flag & FC_UNLOADING)
8513 goto dropit;
8514
8515 /* If NPort discovery is delayed drop incoming ELS */
8516 if ((vport->fc_flag & FC_DISC_DELAYED) &&
8517 (cmd != ELS_CMD_PLOGI))
8518 goto dropit;
8519
8520 ndlp = lpfc_findnode_did(vport, did);
8521 if (!ndlp) {
8522 /* Cannot find existing Fabric ndlp, so allocate a new one */
8523 ndlp = lpfc_nlp_init(vport, did);
8524 if (!ndlp)
8525 goto dropit;
8526 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
8527 newnode = 1;
8528 if ((did & Fabric_DID_MASK) == Fabric_DID_MASK)
8529 ndlp->nlp_type |= NLP_FABRIC;
8530 } else if (ndlp->nlp_state == NLP_STE_UNUSED_NODE) {
8531 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
8532 newnode = 1;
8533 }
8534
8535 phba->fc_stat.elsRcvFrame++;
8536
8537 /*
8538 * Do not process any unsolicited ELS commands
8539 * if the ndlp is in DEV_LOSS
8540 */
8541 spin_lock_irq(&ndlp->lock);
8542 if (ndlp->nlp_flag & NLP_IN_DEV_LOSS) {
8543 spin_unlock_irq(&ndlp->lock);
8544 if (newnode)
8545 lpfc_nlp_put(ndlp);
8546 goto dropit;
8547 }
8548 spin_unlock_irq(&ndlp->lock);
8549
8550 elsiocb->context1 = lpfc_nlp_get(ndlp);
8551 if (!elsiocb->context1)
8552 goto dropit;
8553 elsiocb->vport = vport;
8554
8555 if ((cmd & ELS_CMD_MASK) == ELS_CMD_RSCN) {
8556 cmd &= ELS_CMD_MASK;
8557 }
8558 /* ELS command <elsCmd> received from NPORT <did> */
8559 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
8560 "0112 ELS command x%x received from NPORT x%x "
8561 "refcnt %d Data: x%x x%x x%x x%x\n",
8562 cmd, did, kref_read(&ndlp->kref), vport->port_state,
8563 vport->fc_flag, vport->fc_myDID, vport->fc_prevDID);
8564
8565 /* reject till our FLOGI completes or PLOGI assigned DID via PT2PT */
8566 if ((vport->port_state < LPFC_FABRIC_CFG_LINK) &&
8567 (cmd != ELS_CMD_FLOGI) &&
8568 !((cmd == ELS_CMD_PLOGI) && (vport->fc_flag & FC_PT2PT))) {
8569 rjt_err = LSRJT_LOGICAL_BSY;
8570 rjt_exp = LSEXP_NOTHING_MORE;
8571 goto lsrjt;
8572 }
8573
8574 switch (cmd) {
8575 case ELS_CMD_PLOGI:
8576 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
8577 "RCV PLOGI: did:x%x/ste:x%x flg:x%x",
8578 did, vport->port_state, ndlp->nlp_flag);
8579
8580 phba->fc_stat.elsRcvPLOGI++;
8581 ndlp = lpfc_plogi_confirm_nport(phba, payload, ndlp);
8582 if (phba->sli_rev == LPFC_SLI_REV4 &&
8583 (phba->pport->fc_flag & FC_PT2PT)) {
8584 vport->fc_prevDID = vport->fc_myDID;
8585 /* Our DID needs to be updated before registering
8586 * the vfi. This is done in lpfc_rcv_plogi but
8587 * that is called after the reg_vfi.
8588 */
8589 vport->fc_myDID = elsiocb->iocb.un.rcvels.parmRo;
8590 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
8591 "3312 Remote port assigned DID x%x "
8592 "%x\n", vport->fc_myDID,
8593 vport->fc_prevDID);
8594 }
8595
8596 lpfc_send_els_event(vport, ndlp, payload);
8597
8598 /* If Nport discovery is delayed, reject PLOGIs */
8599 if (vport->fc_flag & FC_DISC_DELAYED) {
8600 rjt_err = LSRJT_UNABLE_TPC;
8601 rjt_exp = LSEXP_NOTHING_MORE;
8602 break;
8603 }
8604
8605 if (vport->port_state < LPFC_DISC_AUTH) {
8606 if (!(phba->pport->fc_flag & FC_PT2PT) ||
8607 (phba->pport->fc_flag & FC_PT2PT_PLOGI)) {
8608 rjt_err = LSRJT_UNABLE_TPC;
8609 rjt_exp = LSEXP_NOTHING_MORE;
8610 break;
8611 }
8612 }
8613
8614 spin_lock_irq(&ndlp->lock);
8615 ndlp->nlp_flag &= ~NLP_TARGET_REMOVE;
8616 spin_unlock_irq(&ndlp->lock);
8617
8618 lpfc_disc_state_machine(vport, ndlp, elsiocb,
8619 NLP_EVT_RCV_PLOGI);
8620
8621 break;
8622 case ELS_CMD_FLOGI:
8623 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
8624 "RCV FLOGI: did:x%x/ste:x%x flg:x%x",
8625 did, vport->port_state, ndlp->nlp_flag);
8626
8627 phba->fc_stat.elsRcvFLOGI++;
8628
8629 /* If the driver believes fabric discovery is done and is ready,
8630 * bounce the link. There is some descrepancy.
8631 */
8632 if (vport->port_state >= LPFC_LOCAL_CFG_LINK &&
8633 vport->fc_flag & FC_PT2PT &&
8634 vport->rcv_flogi_cnt >= 1) {
8635 rjt_err = LSRJT_LOGICAL_BSY;
8636 rjt_exp = LSEXP_NOTHING_MORE;
8637 init_link++;
8638 goto lsrjt;
8639 }
8640
8641 lpfc_els_rcv_flogi(vport, elsiocb, ndlp);
8642 if (newnode)
8643 lpfc_disc_state_machine(vport, ndlp, NULL,
8644 NLP_EVT_DEVICE_RM);
8645 break;
8646 case ELS_CMD_LOGO:
8647 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
8648 "RCV LOGO: did:x%x/ste:x%x flg:x%x",
8649 did, vport->port_state, ndlp->nlp_flag);
8650
8651 phba->fc_stat.elsRcvLOGO++;
8652 lpfc_send_els_event(vport, ndlp, payload);
8653 if (vport->port_state < LPFC_DISC_AUTH) {
8654 rjt_err = LSRJT_UNABLE_TPC;
8655 rjt_exp = LSEXP_NOTHING_MORE;
8656 break;
8657 }
8658 lpfc_disc_state_machine(vport, ndlp, elsiocb, NLP_EVT_RCV_LOGO);
8659 break;
8660 case ELS_CMD_PRLO:
8661 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
8662 "RCV PRLO: did:x%x/ste:x%x flg:x%x",
8663 did, vport->port_state, ndlp->nlp_flag);
8664
8665 phba->fc_stat.elsRcvPRLO++;
8666 lpfc_send_els_event(vport, ndlp, payload);
8667 if (vport->port_state < LPFC_DISC_AUTH) {
8668 rjt_err = LSRJT_UNABLE_TPC;
8669 rjt_exp = LSEXP_NOTHING_MORE;
8670 break;
8671 }
8672 lpfc_disc_state_machine(vport, ndlp, elsiocb, NLP_EVT_RCV_PRLO);
8673 break;
8674 case ELS_CMD_LCB:
8675 phba->fc_stat.elsRcvLCB++;
8676 lpfc_els_rcv_lcb(vport, elsiocb, ndlp);
8677 break;
8678 case ELS_CMD_RDP:
8679 phba->fc_stat.elsRcvRDP++;
8680 lpfc_els_rcv_rdp(vport, elsiocb, ndlp);
8681 break;
8682 case ELS_CMD_RSCN:
8683 phba->fc_stat.elsRcvRSCN++;
8684 lpfc_els_rcv_rscn(vport, elsiocb, ndlp);
8685 if (newnode)
8686 lpfc_disc_state_machine(vport, ndlp, NULL,
8687 NLP_EVT_DEVICE_RM);
8688 break;
8689 case ELS_CMD_ADISC:
8690 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
8691 "RCV ADISC: did:x%x/ste:x%x flg:x%x",
8692 did, vport->port_state, ndlp->nlp_flag);
8693
8694 lpfc_send_els_event(vport, ndlp, payload);
8695 phba->fc_stat.elsRcvADISC++;
8696 if (vport->port_state < LPFC_DISC_AUTH) {
8697 rjt_err = LSRJT_UNABLE_TPC;
8698 rjt_exp = LSEXP_NOTHING_MORE;
8699 break;
8700 }
8701 lpfc_disc_state_machine(vport, ndlp, elsiocb,
8702 NLP_EVT_RCV_ADISC);
8703 break;
8704 case ELS_CMD_PDISC:
8705 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
8706 "RCV PDISC: did:x%x/ste:x%x flg:x%x",
8707 did, vport->port_state, ndlp->nlp_flag);
8708
8709 phba->fc_stat.elsRcvPDISC++;
8710 if (vport->port_state < LPFC_DISC_AUTH) {
8711 rjt_err = LSRJT_UNABLE_TPC;
8712 rjt_exp = LSEXP_NOTHING_MORE;
8713 break;
8714 }
8715 lpfc_disc_state_machine(vport, ndlp, elsiocb,
8716 NLP_EVT_RCV_PDISC);
8717 break;
8718 case ELS_CMD_FARPR:
8719 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
8720 "RCV FARPR: did:x%x/ste:x%x flg:x%x",
8721 did, vport->port_state, ndlp->nlp_flag);
8722
8723 phba->fc_stat.elsRcvFARPR++;
8724 lpfc_els_rcv_farpr(vport, elsiocb, ndlp);
8725 break;
8726 case ELS_CMD_FARP:
8727 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
8728 "RCV FARP: did:x%x/ste:x%x flg:x%x",
8729 did, vport->port_state, ndlp->nlp_flag);
8730
8731 phba->fc_stat.elsRcvFARP++;
8732 lpfc_els_rcv_farp(vport, elsiocb, ndlp);
8733 break;
8734 case ELS_CMD_FAN:
8735 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
8736 "RCV FAN: did:x%x/ste:x%x flg:x%x",
8737 did, vport->port_state, ndlp->nlp_flag);
8738
8739 phba->fc_stat.elsRcvFAN++;
8740 lpfc_els_rcv_fan(vport, elsiocb, ndlp);
8741 break;
8742 case ELS_CMD_PRLI:
8743 case ELS_CMD_NVMEPRLI:
8744 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
8745 "RCV PRLI: did:x%x/ste:x%x flg:x%x",
8746 did, vport->port_state, ndlp->nlp_flag);
8747
8748 phba->fc_stat.elsRcvPRLI++;
8749 if ((vport->port_state < LPFC_DISC_AUTH) &&
8750 (vport->fc_flag & FC_FABRIC)) {
8751 rjt_err = LSRJT_UNABLE_TPC;
8752 rjt_exp = LSEXP_NOTHING_MORE;
8753 break;
8754 }
8755 lpfc_disc_state_machine(vport, ndlp, elsiocb, NLP_EVT_RCV_PRLI);
8756 break;
8757 case ELS_CMD_LIRR:
8758 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
8759 "RCV LIRR: did:x%x/ste:x%x flg:x%x",
8760 did, vport->port_state, ndlp->nlp_flag);
8761
8762 phba->fc_stat.elsRcvLIRR++;
8763 lpfc_els_rcv_lirr(vport, elsiocb, ndlp);
8764 if (newnode)
8765 lpfc_disc_state_machine(vport, ndlp, NULL,
8766 NLP_EVT_DEVICE_RM);
8767 break;
8768 case ELS_CMD_RLS:
8769 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
8770 "RCV RLS: did:x%x/ste:x%x flg:x%x",
8771 did, vport->port_state, ndlp->nlp_flag);
8772
8773 phba->fc_stat.elsRcvRLS++;
8774 lpfc_els_rcv_rls(vport, elsiocb, ndlp);
8775 if (newnode)
8776 lpfc_disc_state_machine(vport, ndlp, NULL,
8777 NLP_EVT_DEVICE_RM);
8778 break;
8779 case ELS_CMD_RPL:
8780 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
8781 "RCV RPL: did:x%x/ste:x%x flg:x%x",
8782 did, vport->port_state, ndlp->nlp_flag);
8783
8784 phba->fc_stat.elsRcvRPL++;
8785 lpfc_els_rcv_rpl(vport, elsiocb, ndlp);
8786 if (newnode)
8787 lpfc_disc_state_machine(vport, ndlp, NULL,
8788 NLP_EVT_DEVICE_RM);
8789 break;
8790 case ELS_CMD_RNID:
8791 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
8792 "RCV RNID: did:x%x/ste:x%x flg:x%x",
8793 did, vport->port_state, ndlp->nlp_flag);
8794
8795 phba->fc_stat.elsRcvRNID++;
8796 lpfc_els_rcv_rnid(vport, elsiocb, ndlp);
8797 if (newnode)
8798 lpfc_disc_state_machine(vport, ndlp, NULL,
8799 NLP_EVT_DEVICE_RM);
8800 break;
8801 case ELS_CMD_RTV:
8802 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
8803 "RCV RTV: did:x%x/ste:x%x flg:x%x",
8804 did, vport->port_state, ndlp->nlp_flag);
8805 phba->fc_stat.elsRcvRTV++;
8806 lpfc_els_rcv_rtv(vport, elsiocb, ndlp);
8807 if (newnode)
8808 lpfc_disc_state_machine(vport, ndlp, NULL,
8809 NLP_EVT_DEVICE_RM);
8810 break;
8811 case ELS_CMD_RRQ:
8812 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
8813 "RCV RRQ: did:x%x/ste:x%x flg:x%x",
8814 did, vport->port_state, ndlp->nlp_flag);
8815
8816 phba->fc_stat.elsRcvRRQ++;
8817 lpfc_els_rcv_rrq(vport, elsiocb, ndlp);
8818 if (newnode)
8819 lpfc_disc_state_machine(vport, ndlp, NULL,
8820 NLP_EVT_DEVICE_RM);
8821 break;
8822 case ELS_CMD_ECHO:
8823 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
8824 "RCV ECHO: did:x%x/ste:x%x flg:x%x",
8825 did, vport->port_state, ndlp->nlp_flag);
8826
8827 phba->fc_stat.elsRcvECHO++;
8828 lpfc_els_rcv_echo(vport, elsiocb, ndlp);
8829 if (newnode)
8830 lpfc_disc_state_machine(vport, ndlp, NULL,
8831 NLP_EVT_DEVICE_RM);
8832 break;
8833 case ELS_CMD_REC:
8834 /* receive this due to exchange closed */
8835 rjt_err = LSRJT_UNABLE_TPC;
8836 rjt_exp = LSEXP_INVALID_OX_RX;
8837 break;
8838 case ELS_CMD_FPIN:
8839 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
8840 "RCV FPIN: did:x%x/ste:x%x flg:x%x",
8841 did, vport->port_state, ndlp->nlp_flag);
8842
8843 lpfc_els_rcv_fpin(vport, (struct fc_els_fpin *)payload,
8844 payload_len);
8845
8846 /* There are no replies, so no rjt codes */
8847 break;
8848 default:
8849 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
8850 "RCV ELS cmd: cmd:x%x did:x%x/ste:x%x",
8851 cmd, did, vport->port_state);
8852
8853 /* Unsupported ELS command, reject */
8854 rjt_err = LSRJT_CMD_UNSUPPORTED;
8855 rjt_exp = LSEXP_NOTHING_MORE;
8856
8857 /* Unknown ELS command <elsCmd> received from NPORT <did> */
8858 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
8859 "0115 Unknown ELS command x%x "
8860 "received from NPORT x%x\n", cmd, did);
8861 if (newnode)
8862 lpfc_disc_state_machine(vport, ndlp, NULL,
8863 NLP_EVT_DEVICE_RM);
8864 break;
8865 }
8866
8867 lsrjt:
8868 /* check if need to LS_RJT received ELS cmd */
8869 if (rjt_err) {
8870 memset(&stat, 0, sizeof(stat));
8871 stat.un.b.lsRjtRsnCode = rjt_err;
8872 stat.un.b.lsRjtRsnCodeExp = rjt_exp;
8873 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, elsiocb, ndlp,
8874 NULL);
8875 /* Remove the reference from above for new nodes. */
8876 if (newnode)
8877 lpfc_disc_state_machine(vport, ndlp, NULL,
8878 NLP_EVT_DEVICE_RM);
8879 }
8880
8881 /* Release the reference on this elsiocb, not the ndlp. */
8882 lpfc_nlp_put(elsiocb->context1);
8883 elsiocb->context1 = NULL;
8884
8885 /* Special case. Driver received an unsolicited command that
8886 * unsupportable given the driver's current state. Reset the
8887 * link and start over.
8888 */
8889 if (init_link) {
8890 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
8891 if (!mbox)
8892 return;
8893 lpfc_linkdown(phba);
8894 lpfc_init_link(phba, mbox,
8895 phba->cfg_topology,
8896 phba->cfg_link_speed);
8897 mbox->u.mb.un.varInitLnk.lipsr_AL_PA = 0;
8898 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
8899 mbox->vport = vport;
8900 if (lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT) ==
8901 MBX_NOT_FINISHED)
8902 mempool_free(mbox, phba->mbox_mem_pool);
8903 }
8904
8905 return;
8906
8907 dropit:
8908 if (vport && !(vport->load_flag & FC_UNLOADING))
8909 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
8910 "0111 Dropping received ELS cmd "
8911 "Data: x%x x%x x%x\n",
8912 icmd->ulpStatus, icmd->un.ulpWord[4], icmd->ulpTimeout);
8913 phba->fc_stat.elsRcvDrop++;
8914 }
8915
8916 /**
8917 * lpfc_els_unsol_event - Process an unsolicited event from an els sli ring
8918 * @phba: pointer to lpfc hba data structure.
8919 * @pring: pointer to a SLI ring.
8920 * @elsiocb: pointer to lpfc els iocb data structure.
8921 *
8922 * This routine is used to process an unsolicited event received from a SLI
8923 * (Service Level Interface) ring. The actual processing of the data buffer
8924 * associated with the unsolicited event is done by invoking the routine
8925 * lpfc_els_unsol_buffer() after properly set up the iocb buffer from the
8926 * SLI ring on which the unsolicited event was received.
8927 **/
8928 void
lpfc_els_unsol_event(struct lpfc_hba * phba,struct lpfc_sli_ring * pring,struct lpfc_iocbq * elsiocb)8929 lpfc_els_unsol_event(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
8930 struct lpfc_iocbq *elsiocb)
8931 {
8932 struct lpfc_vport *vport = phba->pport;
8933 IOCB_t *icmd = &elsiocb->iocb;
8934 dma_addr_t paddr;
8935 struct lpfc_dmabuf *bdeBuf1 = elsiocb->context2;
8936 struct lpfc_dmabuf *bdeBuf2 = elsiocb->context3;
8937
8938 elsiocb->context1 = NULL;
8939 elsiocb->context2 = NULL;
8940 elsiocb->context3 = NULL;
8941
8942 if (icmd->ulpStatus == IOSTAT_NEED_BUFFER) {
8943 lpfc_sli_hbqbuf_add_hbqs(phba, LPFC_ELS_HBQ);
8944 } else if (icmd->ulpStatus == IOSTAT_LOCAL_REJECT &&
8945 (icmd->un.ulpWord[4] & IOERR_PARAM_MASK) ==
8946 IOERR_RCV_BUFFER_WAITING) {
8947 phba->fc_stat.NoRcvBuf++;
8948 /* Not enough posted buffers; Try posting more buffers */
8949 if (!(phba->sli3_options & LPFC_SLI3_HBQ_ENABLED))
8950 lpfc_post_buffer(phba, pring, 0);
8951 return;
8952 }
8953
8954 if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
8955 (icmd->ulpCommand == CMD_IOCB_RCV_ELS64_CX ||
8956 icmd->ulpCommand == CMD_IOCB_RCV_SEQ64_CX)) {
8957 if (icmd->unsli3.rcvsli3.vpi == 0xffff)
8958 vport = phba->pport;
8959 else
8960 vport = lpfc_find_vport_by_vpid(phba,
8961 icmd->unsli3.rcvsli3.vpi);
8962 }
8963
8964 /* If there are no BDEs associated
8965 * with this IOCB, there is nothing to do.
8966 */
8967 if (icmd->ulpBdeCount == 0)
8968 return;
8969
8970 /* type of ELS cmd is first 32bit word
8971 * in packet
8972 */
8973 if (phba->sli3_options & LPFC_SLI3_HBQ_ENABLED) {
8974 elsiocb->context2 = bdeBuf1;
8975 } else {
8976 paddr = getPaddr(icmd->un.cont64[0].addrHigh,
8977 icmd->un.cont64[0].addrLow);
8978 elsiocb->context2 = lpfc_sli_ringpostbuf_get(phba, pring,
8979 paddr);
8980 }
8981
8982 lpfc_els_unsol_buffer(phba, pring, vport, elsiocb);
8983 /*
8984 * The different unsolicited event handlers would tell us
8985 * if they are done with "mp" by setting context2 to NULL.
8986 */
8987 if (elsiocb->context2) {
8988 lpfc_in_buf_free(phba, (struct lpfc_dmabuf *)elsiocb->context2);
8989 elsiocb->context2 = NULL;
8990 }
8991
8992 /* RCV_ELS64_CX provide for 2 BDEs - process 2nd if included */
8993 if ((phba->sli3_options & LPFC_SLI3_HBQ_ENABLED) &&
8994 icmd->ulpBdeCount == 2) {
8995 elsiocb->context2 = bdeBuf2;
8996 lpfc_els_unsol_buffer(phba, pring, vport, elsiocb);
8997 /* free mp if we are done with it */
8998 if (elsiocb->context2) {
8999 lpfc_in_buf_free(phba, elsiocb->context2);
9000 elsiocb->context2 = NULL;
9001 }
9002 }
9003 }
9004
9005 static void
lpfc_start_fdmi(struct lpfc_vport * vport)9006 lpfc_start_fdmi(struct lpfc_vport *vport)
9007 {
9008 struct lpfc_nodelist *ndlp;
9009
9010 /* If this is the first time, allocate an ndlp and initialize
9011 * it. Otherwise, make sure the node is enabled and then do the
9012 * login.
9013 */
9014 ndlp = lpfc_findnode_did(vport, FDMI_DID);
9015 if (!ndlp) {
9016 ndlp = lpfc_nlp_init(vport, FDMI_DID);
9017 if (ndlp) {
9018 ndlp->nlp_type |= NLP_FABRIC;
9019 } else {
9020 return;
9021 }
9022 }
9023
9024 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
9025 lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
9026 }
9027
9028 /**
9029 * lpfc_do_scr_ns_plogi - Issue a plogi to the name server for scr
9030 * @phba: pointer to lpfc hba data structure.
9031 * @vport: pointer to a virtual N_Port data structure.
9032 *
9033 * This routine issues a Port Login (PLOGI) to the Name Server with
9034 * State Change Request (SCR) for a @vport. This routine will create an
9035 * ndlp for the Name Server associated to the @vport if such node does
9036 * not already exist. The PLOGI to Name Server is issued by invoking the
9037 * lpfc_issue_els_plogi() routine. If Fabric-Device Management Interface
9038 * (FDMI) is configured to the @vport, a FDMI node will be created and
9039 * the PLOGI to FDMI is issued by invoking lpfc_issue_els_plogi() routine.
9040 **/
9041 void
lpfc_do_scr_ns_plogi(struct lpfc_hba * phba,struct lpfc_vport * vport)9042 lpfc_do_scr_ns_plogi(struct lpfc_hba *phba, struct lpfc_vport *vport)
9043 {
9044 struct lpfc_nodelist *ndlp;
9045 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
9046
9047 /*
9048 * If lpfc_delay_discovery parameter is set and the clean address
9049 * bit is cleared and fc fabric parameters chenged, delay FC NPort
9050 * discovery.
9051 */
9052 spin_lock_irq(shost->host_lock);
9053 if (vport->fc_flag & FC_DISC_DELAYED) {
9054 spin_unlock_irq(shost->host_lock);
9055 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
9056 "3334 Delay fc port discovery for %d secs\n",
9057 phba->fc_ratov);
9058 mod_timer(&vport->delayed_disc_tmo,
9059 jiffies + msecs_to_jiffies(1000 * phba->fc_ratov));
9060 return;
9061 }
9062 spin_unlock_irq(shost->host_lock);
9063
9064 ndlp = lpfc_findnode_did(vport, NameServer_DID);
9065 if (!ndlp) {
9066 ndlp = lpfc_nlp_init(vport, NameServer_DID);
9067 if (!ndlp) {
9068 if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
9069 lpfc_disc_start(vport);
9070 return;
9071 }
9072 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
9073 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
9074 "0251 NameServer login: no memory\n");
9075 return;
9076 }
9077 }
9078
9079 ndlp->nlp_type |= NLP_FABRIC;
9080
9081 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
9082
9083 if (lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0)) {
9084 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
9085 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
9086 "0252 Cannot issue NameServer login\n");
9087 return;
9088 }
9089
9090 if ((phba->cfg_enable_SmartSAN ||
9091 (phba->cfg_fdmi_on == LPFC_FDMI_SUPPORT)) &&
9092 (vport->load_flag & FC_ALLOW_FDMI))
9093 lpfc_start_fdmi(vport);
9094 }
9095
9096 /**
9097 * lpfc_cmpl_reg_new_vport - Completion callback function to register new vport
9098 * @phba: pointer to lpfc hba data structure.
9099 * @pmb: pointer to the driver internal queue element for mailbox command.
9100 *
9101 * This routine is the completion callback function to register new vport
9102 * mailbox command. If the new vport mailbox command completes successfully,
9103 * the fabric registration login shall be performed on physical port (the
9104 * new vport created is actually a physical port, with VPI 0) or the port
9105 * login to Name Server for State Change Request (SCR) will be performed
9106 * on virtual port (real virtual port, with VPI greater than 0).
9107 **/
9108 static void
lpfc_cmpl_reg_new_vport(struct lpfc_hba * phba,LPFC_MBOXQ_t * pmb)9109 lpfc_cmpl_reg_new_vport(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
9110 {
9111 struct lpfc_vport *vport = pmb->vport;
9112 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
9113 struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *)pmb->ctx_ndlp;
9114 MAILBOX_t *mb = &pmb->u.mb;
9115 int rc;
9116
9117 spin_lock_irq(shost->host_lock);
9118 vport->fc_flag &= ~FC_VPORT_NEEDS_REG_VPI;
9119 spin_unlock_irq(shost->host_lock);
9120
9121 if (mb->mbxStatus) {
9122 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
9123 "0915 Register VPI failed : Status: x%x"
9124 " upd bit: x%x \n", mb->mbxStatus,
9125 mb->un.varRegVpi.upd);
9126 if (phba->sli_rev == LPFC_SLI_REV4 &&
9127 mb->un.varRegVpi.upd)
9128 goto mbox_err_exit ;
9129
9130 switch (mb->mbxStatus) {
9131 case 0x11: /* unsupported feature */
9132 case 0x9603: /* max_vpi exceeded */
9133 case 0x9602: /* Link event since CLEAR_LA */
9134 /* giving up on vport registration */
9135 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
9136 spin_lock_irq(shost->host_lock);
9137 vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP);
9138 spin_unlock_irq(shost->host_lock);
9139 lpfc_can_disctmo(vport);
9140 break;
9141 /* If reg_vpi fail with invalid VPI status, re-init VPI */
9142 case 0x20:
9143 spin_lock_irq(shost->host_lock);
9144 vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
9145 spin_unlock_irq(shost->host_lock);
9146 lpfc_init_vpi(phba, pmb, vport->vpi);
9147 pmb->vport = vport;
9148 pmb->mbox_cmpl = lpfc_init_vpi_cmpl;
9149 rc = lpfc_sli_issue_mbox(phba, pmb,
9150 MBX_NOWAIT);
9151 if (rc == MBX_NOT_FINISHED) {
9152 lpfc_printf_vlog(vport, KERN_ERR,
9153 LOG_TRACE_EVENT,
9154 "2732 Failed to issue INIT_VPI"
9155 " mailbox command\n");
9156 } else {
9157 lpfc_nlp_put(ndlp);
9158 return;
9159 }
9160 fallthrough;
9161 default:
9162 /* Try to recover from this error */
9163 if (phba->sli_rev == LPFC_SLI_REV4)
9164 lpfc_sli4_unreg_all_rpis(vport);
9165 lpfc_mbx_unreg_vpi(vport);
9166 spin_lock_irq(shost->host_lock);
9167 vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
9168 spin_unlock_irq(shost->host_lock);
9169 if (mb->mbxStatus == MBX_NOT_FINISHED)
9170 break;
9171 if ((vport->port_type == LPFC_PHYSICAL_PORT) &&
9172 !(vport->fc_flag & FC_LOGO_RCVD_DID_CHNG)) {
9173 if (phba->sli_rev == LPFC_SLI_REV4)
9174 lpfc_issue_init_vfi(vport);
9175 else
9176 lpfc_initial_flogi(vport);
9177 } else {
9178 lpfc_initial_fdisc(vport);
9179 }
9180 break;
9181 }
9182 } else {
9183 spin_lock_irq(shost->host_lock);
9184 vport->vpi_state |= LPFC_VPI_REGISTERED;
9185 spin_unlock_irq(shost->host_lock);
9186 if (vport == phba->pport) {
9187 if (phba->sli_rev < LPFC_SLI_REV4)
9188 lpfc_issue_fabric_reglogin(vport);
9189 else {
9190 /*
9191 * If the physical port is instantiated using
9192 * FDISC, do not start vport discovery.
9193 */
9194 if (vport->port_state != LPFC_FDISC)
9195 lpfc_start_fdiscs(phba);
9196 lpfc_do_scr_ns_plogi(phba, vport);
9197 }
9198 } else {
9199 lpfc_do_scr_ns_plogi(phba, vport);
9200 }
9201 }
9202 mbox_err_exit:
9203 /* Now, we decrement the ndlp reference count held for this
9204 * callback function
9205 */
9206 lpfc_nlp_put(ndlp);
9207
9208 mempool_free(pmb, phba->mbox_mem_pool);
9209 return;
9210 }
9211
9212 /**
9213 * lpfc_register_new_vport - Register a new vport with a HBA
9214 * @phba: pointer to lpfc hba data structure.
9215 * @vport: pointer to a host virtual N_Port data structure.
9216 * @ndlp: pointer to a node-list data structure.
9217 *
9218 * This routine registers the @vport as a new virtual port with a HBA.
9219 * It is done through a registering vpi mailbox command.
9220 **/
9221 void
lpfc_register_new_vport(struct lpfc_hba * phba,struct lpfc_vport * vport,struct lpfc_nodelist * ndlp)9222 lpfc_register_new_vport(struct lpfc_hba *phba, struct lpfc_vport *vport,
9223 struct lpfc_nodelist *ndlp)
9224 {
9225 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
9226 LPFC_MBOXQ_t *mbox;
9227
9228 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
9229 if (mbox) {
9230 lpfc_reg_vpi(vport, mbox);
9231 mbox->vport = vport;
9232 mbox->ctx_ndlp = lpfc_nlp_get(ndlp);
9233 if (!mbox->ctx_ndlp) {
9234 mempool_free(mbox, phba->mbox_mem_pool);
9235 goto mbox_err_exit;
9236 }
9237
9238 mbox->mbox_cmpl = lpfc_cmpl_reg_new_vport;
9239 if (lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT)
9240 == MBX_NOT_FINISHED) {
9241 /* mailbox command not success, decrement ndlp
9242 * reference count for this command
9243 */
9244 lpfc_nlp_put(ndlp);
9245 mempool_free(mbox, phba->mbox_mem_pool);
9246
9247 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
9248 "0253 Register VPI: Can't send mbox\n");
9249 goto mbox_err_exit;
9250 }
9251 } else {
9252 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
9253 "0254 Register VPI: no memory\n");
9254 goto mbox_err_exit;
9255 }
9256 return;
9257
9258 mbox_err_exit:
9259 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
9260 spin_lock_irq(shost->host_lock);
9261 vport->fc_flag &= ~FC_VPORT_NEEDS_REG_VPI;
9262 spin_unlock_irq(shost->host_lock);
9263 return;
9264 }
9265
9266 /**
9267 * lpfc_cancel_all_vport_retry_delay_timer - Cancel all vport retry delay timer
9268 * @phba: pointer to lpfc hba data structure.
9269 *
9270 * This routine cancels the retry delay timers to all the vports.
9271 **/
9272 void
lpfc_cancel_all_vport_retry_delay_timer(struct lpfc_hba * phba)9273 lpfc_cancel_all_vport_retry_delay_timer(struct lpfc_hba *phba)
9274 {
9275 struct lpfc_vport **vports;
9276 struct lpfc_nodelist *ndlp;
9277 uint32_t link_state;
9278 int i;
9279
9280 /* Treat this failure as linkdown for all vports */
9281 link_state = phba->link_state;
9282 lpfc_linkdown(phba);
9283 phba->link_state = link_state;
9284
9285 vports = lpfc_create_vport_work_array(phba);
9286
9287 if (vports) {
9288 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
9289 ndlp = lpfc_findnode_did(vports[i], Fabric_DID);
9290 if (ndlp)
9291 lpfc_cancel_retry_delay_tmo(vports[i], ndlp);
9292 lpfc_els_flush_cmd(vports[i]);
9293 }
9294 lpfc_destroy_vport_work_array(phba, vports);
9295 }
9296 }
9297
9298 /**
9299 * lpfc_retry_pport_discovery - Start timer to retry FLOGI.
9300 * @phba: pointer to lpfc hba data structure.
9301 *
9302 * This routine abort all pending discovery commands and
9303 * start a timer to retry FLOGI for the physical port
9304 * discovery.
9305 **/
9306 void
lpfc_retry_pport_discovery(struct lpfc_hba * phba)9307 lpfc_retry_pport_discovery(struct lpfc_hba *phba)
9308 {
9309 struct lpfc_nodelist *ndlp;
9310
9311 /* Cancel the all vports retry delay retry timers */
9312 lpfc_cancel_all_vport_retry_delay_timer(phba);
9313
9314 /* If fabric require FLOGI, then re-instantiate physical login */
9315 ndlp = lpfc_findnode_did(phba->pport, Fabric_DID);
9316 if (!ndlp)
9317 return;
9318
9319 mod_timer(&ndlp->nlp_delayfunc, jiffies + msecs_to_jiffies(1000));
9320 spin_lock_irq(&ndlp->lock);
9321 ndlp->nlp_flag |= NLP_DELAY_TMO;
9322 spin_unlock_irq(&ndlp->lock);
9323 ndlp->nlp_last_elscmd = ELS_CMD_FLOGI;
9324 phba->pport->port_state = LPFC_FLOGI;
9325 return;
9326 }
9327
9328 /**
9329 * lpfc_fabric_login_reqd - Check if FLOGI required.
9330 * @phba: pointer to lpfc hba data structure.
9331 * @cmdiocb: pointer to FDISC command iocb.
9332 * @rspiocb: pointer to FDISC response iocb.
9333 *
9334 * This routine checks if a FLOGI is reguired for FDISC
9335 * to succeed.
9336 **/
9337 static int
lpfc_fabric_login_reqd(struct lpfc_hba * phba,struct lpfc_iocbq * cmdiocb,struct lpfc_iocbq * rspiocb)9338 lpfc_fabric_login_reqd(struct lpfc_hba *phba,
9339 struct lpfc_iocbq *cmdiocb,
9340 struct lpfc_iocbq *rspiocb)
9341 {
9342
9343 if ((rspiocb->iocb.ulpStatus != IOSTAT_FABRIC_RJT) ||
9344 (rspiocb->iocb.un.ulpWord[4] != RJT_LOGIN_REQUIRED))
9345 return 0;
9346 else
9347 return 1;
9348 }
9349
9350 /**
9351 * lpfc_cmpl_els_fdisc - Completion function for fdisc iocb command
9352 * @phba: pointer to lpfc hba data structure.
9353 * @cmdiocb: pointer to lpfc command iocb data structure.
9354 * @rspiocb: pointer to lpfc response iocb data structure.
9355 *
9356 * This routine is the completion callback function to a Fabric Discover
9357 * (FDISC) ELS command. Since all the FDISC ELS commands are issued
9358 * single threaded, each FDISC completion callback function will reset
9359 * the discovery timer for all vports such that the timers will not get
9360 * unnecessary timeout. The function checks the FDISC IOCB status. If error
9361 * detected, the vport will be set to FC_VPORT_FAILED state. Otherwise,the
9362 * vport will set to FC_VPORT_ACTIVE state. It then checks whether the DID
9363 * assigned to the vport has been changed with the completion of the FDISC
9364 * command. If so, both RPI (Remote Port Index) and VPI (Virtual Port Index)
9365 * are unregistered from the HBA, and then the lpfc_register_new_vport()
9366 * routine is invoked to register new vport with the HBA. Otherwise, the
9367 * lpfc_do_scr_ns_plogi() routine is invoked to issue a PLOGI to the Name
9368 * Server for State Change Request (SCR).
9369 **/
9370 static void
lpfc_cmpl_els_fdisc(struct lpfc_hba * phba,struct lpfc_iocbq * cmdiocb,struct lpfc_iocbq * rspiocb)9371 lpfc_cmpl_els_fdisc(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
9372 struct lpfc_iocbq *rspiocb)
9373 {
9374 struct lpfc_vport *vport = cmdiocb->vport;
9375 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
9376 struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) cmdiocb->context1;
9377 struct lpfc_nodelist *np;
9378 struct lpfc_nodelist *next_np;
9379 IOCB_t *irsp = &rspiocb->iocb;
9380 struct lpfc_iocbq *piocb;
9381 struct lpfc_dmabuf *pcmd = cmdiocb->context2, *prsp;
9382 struct serv_parm *sp;
9383 uint8_t fabric_param_changed;
9384
9385 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
9386 "0123 FDISC completes. x%x/x%x prevDID: x%x\n",
9387 irsp->ulpStatus, irsp->un.ulpWord[4],
9388 vport->fc_prevDID);
9389 /* Since all FDISCs are being single threaded, we
9390 * must reset the discovery timer for ALL vports
9391 * waiting to send FDISC when one completes.
9392 */
9393 list_for_each_entry(piocb, &phba->fabric_iocb_list, list) {
9394 lpfc_set_disctmo(piocb->vport);
9395 }
9396
9397 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
9398 "FDISC cmpl: status:x%x/x%x prevdid:x%x",
9399 irsp->ulpStatus, irsp->un.ulpWord[4], vport->fc_prevDID);
9400
9401 if (irsp->ulpStatus) {
9402
9403 if (lpfc_fabric_login_reqd(phba, cmdiocb, rspiocb)) {
9404 lpfc_retry_pport_discovery(phba);
9405 goto out;
9406 }
9407
9408 /* Check for retry */
9409 if (lpfc_els_retry(phba, cmdiocb, rspiocb))
9410 goto out;
9411 /* FDISC failed */
9412 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
9413 "0126 FDISC failed. (x%x/x%x)\n",
9414 irsp->ulpStatus, irsp->un.ulpWord[4]);
9415 goto fdisc_failed;
9416 }
9417 spin_lock_irq(shost->host_lock);
9418 vport->fc_flag &= ~FC_VPORT_CVL_RCVD;
9419 vport->fc_flag &= ~FC_VPORT_LOGO_RCVD;
9420 vport->fc_flag |= FC_FABRIC;
9421 if (vport->phba->fc_topology == LPFC_TOPOLOGY_LOOP)
9422 vport->fc_flag |= FC_PUBLIC_LOOP;
9423 spin_unlock_irq(shost->host_lock);
9424
9425 vport->fc_myDID = irsp->un.ulpWord[4] & Mask_DID;
9426 lpfc_vport_set_state(vport, FC_VPORT_ACTIVE);
9427 prsp = list_get_first(&pcmd->list, struct lpfc_dmabuf, list);
9428 if (!prsp)
9429 goto out;
9430 sp = prsp->virt + sizeof(uint32_t);
9431 fabric_param_changed = lpfc_check_clean_addr_bit(vport, sp);
9432 memcpy(&vport->fabric_portname, &sp->portName,
9433 sizeof(struct lpfc_name));
9434 memcpy(&vport->fabric_nodename, &sp->nodeName,
9435 sizeof(struct lpfc_name));
9436 if (fabric_param_changed &&
9437 !(vport->fc_flag & FC_VPORT_NEEDS_REG_VPI)) {
9438 /* If our NportID changed, we need to ensure all
9439 * remaining NPORTs get unreg_login'ed so we can
9440 * issue unreg_vpi.
9441 */
9442 list_for_each_entry_safe(np, next_np,
9443 &vport->fc_nodes, nlp_listp) {
9444 if ((np->nlp_state != NLP_STE_NPR_NODE) ||
9445 !(np->nlp_flag & NLP_NPR_ADISC))
9446 continue;
9447 spin_lock_irq(&ndlp->lock);
9448 np->nlp_flag &= ~NLP_NPR_ADISC;
9449 spin_unlock_irq(&ndlp->lock);
9450 lpfc_unreg_rpi(vport, np);
9451 }
9452 lpfc_cleanup_pending_mbox(vport);
9453
9454 if (phba->sli_rev == LPFC_SLI_REV4)
9455 lpfc_sli4_unreg_all_rpis(vport);
9456
9457 lpfc_mbx_unreg_vpi(vport);
9458 spin_lock_irq(shost->host_lock);
9459 vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
9460 if (phba->sli_rev == LPFC_SLI_REV4)
9461 vport->fc_flag |= FC_VPORT_NEEDS_INIT_VPI;
9462 else
9463 vport->fc_flag |= FC_LOGO_RCVD_DID_CHNG;
9464 spin_unlock_irq(shost->host_lock);
9465 } else if ((phba->sli_rev == LPFC_SLI_REV4) &&
9466 !(vport->fc_flag & FC_VPORT_NEEDS_REG_VPI)) {
9467 /*
9468 * Driver needs to re-reg VPI in order for f/w
9469 * to update the MAC address.
9470 */
9471 lpfc_register_new_vport(phba, vport, ndlp);
9472 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
9473 goto out;
9474 }
9475
9476 if (vport->fc_flag & FC_VPORT_NEEDS_INIT_VPI)
9477 lpfc_issue_init_vpi(vport);
9478 else if (vport->fc_flag & FC_VPORT_NEEDS_REG_VPI)
9479 lpfc_register_new_vport(phba, vport, ndlp);
9480 else
9481 lpfc_do_scr_ns_plogi(phba, vport);
9482
9483 /* The FDISC completed successfully. Move the fabric ndlp to
9484 * UNMAPPED state and register with the transport.
9485 */
9486 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
9487 goto out;
9488
9489 fdisc_failed:
9490 if (vport->fc_vport &&
9491 (vport->fc_vport->vport_state != FC_VPORT_NO_FABRIC_RSCS))
9492 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
9493 /* Cancel discovery timer */
9494 lpfc_can_disctmo(vport);
9495 out:
9496 lpfc_els_free_iocb(phba, cmdiocb);
9497 lpfc_nlp_put(ndlp);
9498 }
9499
9500 /**
9501 * lpfc_issue_els_fdisc - Issue a fdisc iocb command
9502 * @vport: pointer to a virtual N_Port data structure.
9503 * @ndlp: pointer to a node-list data structure.
9504 * @retry: number of retries to the command IOCB.
9505 *
9506 * This routine prepares and issues a Fabric Discover (FDISC) IOCB to
9507 * a remote node (@ndlp) off a @vport. It uses the lpfc_issue_fabric_iocb()
9508 * routine to issue the IOCB, which makes sure only one outstanding fabric
9509 * IOCB will be sent off HBA at any given time.
9510 *
9511 * Note that the ndlp reference count will be incremented by 1 for holding the
9512 * ndlp and the reference to ndlp will be stored into the context1 field of
9513 * the IOCB for the completion callback function to the FDISC ELS command.
9514 *
9515 * Return code
9516 * 0 - Successfully issued fdisc iocb command
9517 * 1 - Failed to issue fdisc iocb command
9518 **/
9519 static int
lpfc_issue_els_fdisc(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,uint8_t retry)9520 lpfc_issue_els_fdisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
9521 uint8_t retry)
9522 {
9523 struct lpfc_hba *phba = vport->phba;
9524 IOCB_t *icmd;
9525 struct lpfc_iocbq *elsiocb;
9526 struct serv_parm *sp;
9527 uint8_t *pcmd;
9528 uint16_t cmdsize;
9529 int did = ndlp->nlp_DID;
9530 int rc;
9531
9532 vport->port_state = LPFC_FDISC;
9533 vport->fc_myDID = 0;
9534 cmdsize = (sizeof(uint32_t) + sizeof(struct serv_parm));
9535 elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp, did,
9536 ELS_CMD_FDISC);
9537 if (!elsiocb) {
9538 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
9539 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
9540 "0255 Issue FDISC: no IOCB\n");
9541 return 1;
9542 }
9543
9544 icmd = &elsiocb->iocb;
9545 icmd->un.elsreq64.myID = 0;
9546 icmd->un.elsreq64.fl = 1;
9547
9548 /*
9549 * SLI3 ports require a different context type value than SLI4.
9550 * Catch SLI3 ports here and override the prep.
9551 */
9552 if (phba->sli_rev == LPFC_SLI_REV3) {
9553 icmd->ulpCt_h = 1;
9554 icmd->ulpCt_l = 0;
9555 }
9556
9557 pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
9558 *((uint32_t *) (pcmd)) = ELS_CMD_FDISC;
9559 pcmd += sizeof(uint32_t); /* CSP Word 1 */
9560 memcpy(pcmd, &vport->phba->pport->fc_sparam, sizeof(struct serv_parm));
9561 sp = (struct serv_parm *) pcmd;
9562 /* Setup CSPs accordingly for Fabric */
9563 sp->cmn.e_d_tov = 0;
9564 sp->cmn.w2.r_a_tov = 0;
9565 sp->cmn.virtual_fabric_support = 0;
9566 sp->cls1.classValid = 0;
9567 sp->cls2.seqDelivery = 1;
9568 sp->cls3.seqDelivery = 1;
9569
9570 pcmd += sizeof(uint32_t); /* CSP Word 2 */
9571 pcmd += sizeof(uint32_t); /* CSP Word 3 */
9572 pcmd += sizeof(uint32_t); /* CSP Word 4 */
9573 pcmd += sizeof(uint32_t); /* Port Name */
9574 memcpy(pcmd, &vport->fc_portname, 8);
9575 pcmd += sizeof(uint32_t); /* Node Name */
9576 pcmd += sizeof(uint32_t); /* Node Name */
9577 memcpy(pcmd, &vport->fc_nodename, 8);
9578 sp->cmn.valid_vendor_ver_level = 0;
9579 memset(sp->un.vendorVersion, 0, sizeof(sp->un.vendorVersion));
9580 lpfc_set_disctmo(vport);
9581
9582 phba->fc_stat.elsXmitFDISC++;
9583 elsiocb->iocb_cmpl = lpfc_cmpl_els_fdisc;
9584
9585 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
9586 "Issue FDISC: did:x%x",
9587 did, 0, 0);
9588
9589 elsiocb->context1 = lpfc_nlp_get(ndlp);
9590 if (!elsiocb->context1) {
9591 lpfc_els_free_iocb(phba, elsiocb);
9592 goto err_out;
9593 }
9594
9595 rc = lpfc_issue_fabric_iocb(phba, elsiocb);
9596 if (rc == IOCB_ERROR) {
9597 lpfc_els_free_iocb(phba, elsiocb);
9598 lpfc_nlp_put(ndlp);
9599 goto err_out;
9600 }
9601
9602 lpfc_vport_set_state(vport, FC_VPORT_INITIALIZING);
9603 return 0;
9604
9605 err_out:
9606 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
9607 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
9608 "0256 Issue FDISC: Cannot send IOCB\n");
9609 return 1;
9610 }
9611
9612 /**
9613 * lpfc_cmpl_els_npiv_logo - Completion function with vport logo
9614 * @phba: pointer to lpfc hba data structure.
9615 * @cmdiocb: pointer to lpfc command iocb data structure.
9616 * @rspiocb: pointer to lpfc response iocb data structure.
9617 *
9618 * This routine is the completion callback function to the issuing of a LOGO
9619 * ELS command off a vport. It frees the command IOCB and then decrement the
9620 * reference count held on ndlp for this completion function, indicating that
9621 * the reference to the ndlp is no long needed. Note that the
9622 * lpfc_els_free_iocb() routine decrements the ndlp reference held for this
9623 * callback function and an additional explicit ndlp reference decrementation
9624 * will trigger the actual release of the ndlp.
9625 **/
9626 static void
lpfc_cmpl_els_npiv_logo(struct lpfc_hba * phba,struct lpfc_iocbq * cmdiocb,struct lpfc_iocbq * rspiocb)9627 lpfc_cmpl_els_npiv_logo(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
9628 struct lpfc_iocbq *rspiocb)
9629 {
9630 struct lpfc_vport *vport = cmdiocb->vport;
9631 IOCB_t *irsp;
9632 struct lpfc_nodelist *ndlp;
9633 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
9634
9635 ndlp = (struct lpfc_nodelist *)cmdiocb->context1;
9636 irsp = &rspiocb->iocb;
9637 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
9638 "LOGO npiv cmpl: status:x%x/x%x did:x%x",
9639 irsp->ulpStatus, irsp->un.ulpWord[4], irsp->un.rcvels.remoteID);
9640
9641 /* NPIV LOGO completes to NPort <nlp_DID> */
9642 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
9643 "2928 NPIV LOGO completes to NPort x%x "
9644 "Data: x%x x%x x%x x%x x%x x%x x%x\n",
9645 ndlp->nlp_DID, irsp->ulpStatus, irsp->un.ulpWord[4],
9646 irsp->ulpTimeout, vport->num_disc_nodes,
9647 kref_read(&ndlp->kref), ndlp->nlp_flag,
9648 ndlp->fc4_xpt_flags);
9649
9650 if (irsp->ulpStatus == IOSTAT_SUCCESS) {
9651 spin_lock_irq(shost->host_lock);
9652 vport->fc_flag &= ~FC_NDISC_ACTIVE;
9653 vport->fc_flag &= ~FC_FABRIC;
9654 spin_unlock_irq(shost->host_lock);
9655 lpfc_can_disctmo(vport);
9656 }
9657
9658 /* Safe to release resources now. */
9659 lpfc_els_free_iocb(phba, cmdiocb);
9660 lpfc_nlp_put(ndlp);
9661 vport->unreg_vpi_cmpl = VPORT_ERROR;
9662 }
9663
9664 /**
9665 * lpfc_issue_els_npiv_logo - Issue a logo off a vport
9666 * @vport: pointer to a virtual N_Port data structure.
9667 * @ndlp: pointer to a node-list data structure.
9668 *
9669 * This routine issues a LOGO ELS command to an @ndlp off a @vport.
9670 *
9671 * Note that the ndlp reference count will be incremented by 1 for holding the
9672 * ndlp and the reference to ndlp will be stored into the context1 field of
9673 * the IOCB for the completion callback function to the LOGO ELS command.
9674 *
9675 * Return codes
9676 * 0 - Successfully issued logo off the @vport
9677 * 1 - Failed to issue logo off the @vport
9678 **/
9679 int
lpfc_issue_els_npiv_logo(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp)9680 lpfc_issue_els_npiv_logo(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
9681 {
9682 int rc = 0;
9683 struct lpfc_hba *phba = vport->phba;
9684 struct lpfc_iocbq *elsiocb;
9685 uint8_t *pcmd;
9686 uint16_t cmdsize;
9687
9688 cmdsize = 2 * sizeof(uint32_t) + sizeof(struct lpfc_name);
9689 elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, 0, ndlp, ndlp->nlp_DID,
9690 ELS_CMD_LOGO);
9691 if (!elsiocb)
9692 return 1;
9693
9694 pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
9695 *((uint32_t *) (pcmd)) = ELS_CMD_LOGO;
9696 pcmd += sizeof(uint32_t);
9697
9698 /* Fill in LOGO payload */
9699 *((uint32_t *) (pcmd)) = be32_to_cpu(vport->fc_myDID);
9700 pcmd += sizeof(uint32_t);
9701 memcpy(pcmd, &vport->fc_portname, sizeof(struct lpfc_name));
9702
9703 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
9704 "Issue LOGO npiv did:x%x flg:x%x",
9705 ndlp->nlp_DID, ndlp->nlp_flag, 0);
9706
9707 elsiocb->iocb_cmpl = lpfc_cmpl_els_npiv_logo;
9708 spin_lock_irq(&ndlp->lock);
9709 ndlp->nlp_flag |= NLP_LOGO_SND;
9710 spin_unlock_irq(&ndlp->lock);
9711 elsiocb->context1 = lpfc_nlp_get(ndlp);
9712 if (!elsiocb->context1) {
9713 lpfc_els_free_iocb(phba, elsiocb);
9714 goto err;
9715 }
9716
9717 rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
9718 if (rc == IOCB_ERROR) {
9719 lpfc_els_free_iocb(phba, elsiocb);
9720 lpfc_nlp_put(ndlp);
9721 goto err;
9722 }
9723 return 0;
9724
9725 err:
9726 spin_lock_irq(&ndlp->lock);
9727 ndlp->nlp_flag &= ~NLP_LOGO_SND;
9728 spin_unlock_irq(&ndlp->lock);
9729 return 1;
9730 }
9731
9732 /**
9733 * lpfc_fabric_block_timeout - Handler function to the fabric block timer
9734 * @t: timer context used to obtain the lpfc hba.
9735 *
9736 * This routine is invoked by the fabric iocb block timer after
9737 * timeout. It posts the fabric iocb block timeout event by setting the
9738 * WORKER_FABRIC_BLOCK_TMO bit to work port event bitmap and then invokes
9739 * lpfc_worker_wake_up() routine to wake up the worker thread. It is for
9740 * the worker thread to invoke the lpfc_unblock_fabric_iocbs() on the
9741 * posted event WORKER_FABRIC_BLOCK_TMO.
9742 **/
9743 void
lpfc_fabric_block_timeout(struct timer_list * t)9744 lpfc_fabric_block_timeout(struct timer_list *t)
9745 {
9746 struct lpfc_hba *phba = from_timer(phba, t, fabric_block_timer);
9747 unsigned long iflags;
9748 uint32_t tmo_posted;
9749
9750 spin_lock_irqsave(&phba->pport->work_port_lock, iflags);
9751 tmo_posted = phba->pport->work_port_events & WORKER_FABRIC_BLOCK_TMO;
9752 if (!tmo_posted)
9753 phba->pport->work_port_events |= WORKER_FABRIC_BLOCK_TMO;
9754 spin_unlock_irqrestore(&phba->pport->work_port_lock, iflags);
9755
9756 if (!tmo_posted)
9757 lpfc_worker_wake_up(phba);
9758 return;
9759 }
9760
9761 /**
9762 * lpfc_resume_fabric_iocbs - Issue a fabric iocb from driver internal list
9763 * @phba: pointer to lpfc hba data structure.
9764 *
9765 * This routine issues one fabric iocb from the driver internal list to
9766 * the HBA. It first checks whether it's ready to issue one fabric iocb to
9767 * the HBA (whether there is no outstanding fabric iocb). If so, it shall
9768 * remove one pending fabric iocb from the driver internal list and invokes
9769 * lpfc_sli_issue_iocb() routine to send the fabric iocb to the HBA.
9770 **/
9771 static void
lpfc_resume_fabric_iocbs(struct lpfc_hba * phba)9772 lpfc_resume_fabric_iocbs(struct lpfc_hba *phba)
9773 {
9774 struct lpfc_iocbq *iocb;
9775 unsigned long iflags;
9776 int ret;
9777 IOCB_t *cmd;
9778
9779 repeat:
9780 iocb = NULL;
9781 spin_lock_irqsave(&phba->hbalock, iflags);
9782 /* Post any pending iocb to the SLI layer */
9783 if (atomic_read(&phba->fabric_iocb_count) == 0) {
9784 list_remove_head(&phba->fabric_iocb_list, iocb, typeof(*iocb),
9785 list);
9786 if (iocb)
9787 /* Increment fabric iocb count to hold the position */
9788 atomic_inc(&phba->fabric_iocb_count);
9789 }
9790 spin_unlock_irqrestore(&phba->hbalock, iflags);
9791 if (iocb) {
9792 iocb->fabric_iocb_cmpl = iocb->iocb_cmpl;
9793 iocb->iocb_cmpl = lpfc_cmpl_fabric_iocb;
9794 iocb->iocb_flag |= LPFC_IO_FABRIC;
9795
9796 lpfc_debugfs_disc_trc(iocb->vport, LPFC_DISC_TRC_ELS_CMD,
9797 "Fabric sched1: ste:x%x",
9798 iocb->vport->port_state, 0, 0);
9799
9800 ret = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, iocb, 0);
9801
9802 if (ret == IOCB_ERROR) {
9803 iocb->iocb_cmpl = iocb->fabric_iocb_cmpl;
9804 iocb->fabric_iocb_cmpl = NULL;
9805 iocb->iocb_flag &= ~LPFC_IO_FABRIC;
9806 cmd = &iocb->iocb;
9807 cmd->ulpStatus = IOSTAT_LOCAL_REJECT;
9808 cmd->un.ulpWord[4] = IOERR_SLI_ABORTED;
9809 iocb->iocb_cmpl(phba, iocb, iocb);
9810
9811 atomic_dec(&phba->fabric_iocb_count);
9812 goto repeat;
9813 }
9814 }
9815 }
9816
9817 /**
9818 * lpfc_unblock_fabric_iocbs - Unblock issuing fabric iocb command
9819 * @phba: pointer to lpfc hba data structure.
9820 *
9821 * This routine unblocks the issuing fabric iocb command. The function
9822 * will clear the fabric iocb block bit and then invoke the routine
9823 * lpfc_resume_fabric_iocbs() to issue one of the pending fabric iocb
9824 * from the driver internal fabric iocb list.
9825 **/
9826 void
lpfc_unblock_fabric_iocbs(struct lpfc_hba * phba)9827 lpfc_unblock_fabric_iocbs(struct lpfc_hba *phba)
9828 {
9829 clear_bit(FABRIC_COMANDS_BLOCKED, &phba->bit_flags);
9830
9831 lpfc_resume_fabric_iocbs(phba);
9832 return;
9833 }
9834
9835 /**
9836 * lpfc_block_fabric_iocbs - Block issuing fabric iocb command
9837 * @phba: pointer to lpfc hba data structure.
9838 *
9839 * This routine blocks the issuing fabric iocb for a specified amount of
9840 * time (currently 100 ms). This is done by set the fabric iocb block bit
9841 * and set up a timeout timer for 100ms. When the block bit is set, no more
9842 * fabric iocb will be issued out of the HBA.
9843 **/
9844 static void
lpfc_block_fabric_iocbs(struct lpfc_hba * phba)9845 lpfc_block_fabric_iocbs(struct lpfc_hba *phba)
9846 {
9847 int blocked;
9848
9849 blocked = test_and_set_bit(FABRIC_COMANDS_BLOCKED, &phba->bit_flags);
9850 /* Start a timer to unblock fabric iocbs after 100ms */
9851 if (!blocked)
9852 mod_timer(&phba->fabric_block_timer,
9853 jiffies + msecs_to_jiffies(100));
9854
9855 return;
9856 }
9857
9858 /**
9859 * lpfc_cmpl_fabric_iocb - Completion callback function for fabric iocb
9860 * @phba: pointer to lpfc hba data structure.
9861 * @cmdiocb: pointer to lpfc command iocb data structure.
9862 * @rspiocb: pointer to lpfc response iocb data structure.
9863 *
9864 * This routine is the callback function that is put to the fabric iocb's
9865 * callback function pointer (iocb->iocb_cmpl). The original iocb's callback
9866 * function pointer has been stored in iocb->fabric_iocb_cmpl. This callback
9867 * function first restores and invokes the original iocb's callback function
9868 * and then invokes the lpfc_resume_fabric_iocbs() routine to issue the next
9869 * fabric bound iocb from the driver internal fabric iocb list onto the wire.
9870 **/
9871 static void
lpfc_cmpl_fabric_iocb(struct lpfc_hba * phba,struct lpfc_iocbq * cmdiocb,struct lpfc_iocbq * rspiocb)9872 lpfc_cmpl_fabric_iocb(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
9873 struct lpfc_iocbq *rspiocb)
9874 {
9875 struct ls_rjt stat;
9876
9877 BUG_ON((cmdiocb->iocb_flag & LPFC_IO_FABRIC) != LPFC_IO_FABRIC);
9878
9879 switch (rspiocb->iocb.ulpStatus) {
9880 case IOSTAT_NPORT_RJT:
9881 case IOSTAT_FABRIC_RJT:
9882 if (rspiocb->iocb.un.ulpWord[4] & RJT_UNAVAIL_TEMP) {
9883 lpfc_block_fabric_iocbs(phba);
9884 }
9885 break;
9886
9887 case IOSTAT_NPORT_BSY:
9888 case IOSTAT_FABRIC_BSY:
9889 lpfc_block_fabric_iocbs(phba);
9890 break;
9891
9892 case IOSTAT_LS_RJT:
9893 stat.un.lsRjtError =
9894 be32_to_cpu(rspiocb->iocb.un.ulpWord[4]);
9895 if ((stat.un.b.lsRjtRsnCode == LSRJT_UNABLE_TPC) ||
9896 (stat.un.b.lsRjtRsnCode == LSRJT_LOGICAL_BSY))
9897 lpfc_block_fabric_iocbs(phba);
9898 break;
9899 }
9900
9901 BUG_ON(atomic_read(&phba->fabric_iocb_count) == 0);
9902
9903 cmdiocb->iocb_cmpl = cmdiocb->fabric_iocb_cmpl;
9904 cmdiocb->fabric_iocb_cmpl = NULL;
9905 cmdiocb->iocb_flag &= ~LPFC_IO_FABRIC;
9906 cmdiocb->iocb_cmpl(phba, cmdiocb, rspiocb);
9907
9908 atomic_dec(&phba->fabric_iocb_count);
9909 if (!test_bit(FABRIC_COMANDS_BLOCKED, &phba->bit_flags)) {
9910 /* Post any pending iocbs to HBA */
9911 lpfc_resume_fabric_iocbs(phba);
9912 }
9913 }
9914
9915 /**
9916 * lpfc_issue_fabric_iocb - Issue a fabric iocb command
9917 * @phba: pointer to lpfc hba data structure.
9918 * @iocb: pointer to lpfc command iocb data structure.
9919 *
9920 * This routine is used as the top-level API for issuing a fabric iocb command
9921 * such as FLOGI and FDISC. To accommodate certain switch fabric, this driver
9922 * function makes sure that only one fabric bound iocb will be outstanding at
9923 * any given time. As such, this function will first check to see whether there
9924 * is already an outstanding fabric iocb on the wire. If so, it will put the
9925 * newly issued iocb onto the driver internal fabric iocb list, waiting to be
9926 * issued later. Otherwise, it will issue the iocb on the wire and update the
9927 * fabric iocb count it indicate that there is one fabric iocb on the wire.
9928 *
9929 * Note, this implementation has a potential sending out fabric IOCBs out of
9930 * order. The problem is caused by the construction of the "ready" boolen does
9931 * not include the condition that the internal fabric IOCB list is empty. As
9932 * such, it is possible a fabric IOCB issued by this routine might be "jump"
9933 * ahead of the fabric IOCBs in the internal list.
9934 *
9935 * Return code
9936 * IOCB_SUCCESS - either fabric iocb put on the list or issued successfully
9937 * IOCB_ERROR - failed to issue fabric iocb
9938 **/
9939 static int
lpfc_issue_fabric_iocb(struct lpfc_hba * phba,struct lpfc_iocbq * iocb)9940 lpfc_issue_fabric_iocb(struct lpfc_hba *phba, struct lpfc_iocbq *iocb)
9941 {
9942 unsigned long iflags;
9943 int ready;
9944 int ret;
9945
9946 BUG_ON(atomic_read(&phba->fabric_iocb_count) > 1);
9947
9948 spin_lock_irqsave(&phba->hbalock, iflags);
9949 ready = atomic_read(&phba->fabric_iocb_count) == 0 &&
9950 !test_bit(FABRIC_COMANDS_BLOCKED, &phba->bit_flags);
9951
9952 if (ready)
9953 /* Increment fabric iocb count to hold the position */
9954 atomic_inc(&phba->fabric_iocb_count);
9955 spin_unlock_irqrestore(&phba->hbalock, iflags);
9956 if (ready) {
9957 iocb->fabric_iocb_cmpl = iocb->iocb_cmpl;
9958 iocb->iocb_cmpl = lpfc_cmpl_fabric_iocb;
9959 iocb->iocb_flag |= LPFC_IO_FABRIC;
9960
9961 lpfc_debugfs_disc_trc(iocb->vport, LPFC_DISC_TRC_ELS_CMD,
9962 "Fabric sched2: ste:x%x",
9963 iocb->vport->port_state, 0, 0);
9964
9965 ret = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, iocb, 0);
9966
9967 if (ret == IOCB_ERROR) {
9968 iocb->iocb_cmpl = iocb->fabric_iocb_cmpl;
9969 iocb->fabric_iocb_cmpl = NULL;
9970 iocb->iocb_flag &= ~LPFC_IO_FABRIC;
9971 atomic_dec(&phba->fabric_iocb_count);
9972 }
9973 } else {
9974 spin_lock_irqsave(&phba->hbalock, iflags);
9975 list_add_tail(&iocb->list, &phba->fabric_iocb_list);
9976 spin_unlock_irqrestore(&phba->hbalock, iflags);
9977 ret = IOCB_SUCCESS;
9978 }
9979 return ret;
9980 }
9981
9982 /**
9983 * lpfc_fabric_abort_vport - Abort a vport's iocbs from driver fabric iocb list
9984 * @vport: pointer to a virtual N_Port data structure.
9985 *
9986 * This routine aborts all the IOCBs associated with a @vport from the
9987 * driver internal fabric IOCB list. The list contains fabric IOCBs to be
9988 * issued to the ELS IOCB ring. This abort function walks the fabric IOCB
9989 * list, removes each IOCB associated with the @vport off the list, set the
9990 * status field to IOSTAT_LOCAL_REJECT, and invokes the callback function
9991 * associated with the IOCB.
9992 **/
lpfc_fabric_abort_vport(struct lpfc_vport * vport)9993 static void lpfc_fabric_abort_vport(struct lpfc_vport *vport)
9994 {
9995 LIST_HEAD(completions);
9996 struct lpfc_hba *phba = vport->phba;
9997 struct lpfc_iocbq *tmp_iocb, *piocb;
9998
9999 spin_lock_irq(&phba->hbalock);
10000 list_for_each_entry_safe(piocb, tmp_iocb, &phba->fabric_iocb_list,
10001 list) {
10002
10003 if (piocb->vport != vport)
10004 continue;
10005
10006 list_move_tail(&piocb->list, &completions);
10007 }
10008 spin_unlock_irq(&phba->hbalock);
10009
10010 /* Cancel all the IOCBs from the completions list */
10011 lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT,
10012 IOERR_SLI_ABORTED);
10013 }
10014
10015 /**
10016 * lpfc_fabric_abort_nport - Abort a ndlp's iocbs from driver fabric iocb list
10017 * @ndlp: pointer to a node-list data structure.
10018 *
10019 * This routine aborts all the IOCBs associated with an @ndlp from the
10020 * driver internal fabric IOCB list. The list contains fabric IOCBs to be
10021 * issued to the ELS IOCB ring. This abort function walks the fabric IOCB
10022 * list, removes each IOCB associated with the @ndlp off the list, set the
10023 * status field to IOSTAT_LOCAL_REJECT, and invokes the callback function
10024 * associated with the IOCB.
10025 **/
lpfc_fabric_abort_nport(struct lpfc_nodelist * ndlp)10026 void lpfc_fabric_abort_nport(struct lpfc_nodelist *ndlp)
10027 {
10028 LIST_HEAD(completions);
10029 struct lpfc_hba *phba = ndlp->phba;
10030 struct lpfc_iocbq *tmp_iocb, *piocb;
10031 struct lpfc_sli_ring *pring;
10032
10033 pring = lpfc_phba_elsring(phba);
10034
10035 if (unlikely(!pring))
10036 return;
10037
10038 spin_lock_irq(&phba->hbalock);
10039 list_for_each_entry_safe(piocb, tmp_iocb, &phba->fabric_iocb_list,
10040 list) {
10041 if ((lpfc_check_sli_ndlp(phba, pring, piocb, ndlp))) {
10042
10043 list_move_tail(&piocb->list, &completions);
10044 }
10045 }
10046 spin_unlock_irq(&phba->hbalock);
10047
10048 /* Cancel all the IOCBs from the completions list */
10049 lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT,
10050 IOERR_SLI_ABORTED);
10051 }
10052
10053 /**
10054 * lpfc_fabric_abort_hba - Abort all iocbs on driver fabric iocb list
10055 * @phba: pointer to lpfc hba data structure.
10056 *
10057 * This routine aborts all the IOCBs currently on the driver internal
10058 * fabric IOCB list. The list contains fabric IOCBs to be issued to the ELS
10059 * IOCB ring. This function takes the entire IOCB list off the fabric IOCB
10060 * list, removes IOCBs off the list, set the status field to
10061 * IOSTAT_LOCAL_REJECT, and invokes the callback function associated with
10062 * the IOCB.
10063 **/
lpfc_fabric_abort_hba(struct lpfc_hba * phba)10064 void lpfc_fabric_abort_hba(struct lpfc_hba *phba)
10065 {
10066 LIST_HEAD(completions);
10067
10068 spin_lock_irq(&phba->hbalock);
10069 list_splice_init(&phba->fabric_iocb_list, &completions);
10070 spin_unlock_irq(&phba->hbalock);
10071
10072 /* Cancel all the IOCBs from the completions list */
10073 lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT,
10074 IOERR_SLI_ABORTED);
10075 }
10076
10077 /**
10078 * lpfc_sli4_vport_delete_els_xri_aborted -Remove all ndlp references for vport
10079 * @vport: pointer to lpfc vport data structure.
10080 *
10081 * This routine is invoked by the vport cleanup for deletions and the cleanup
10082 * for an ndlp on removal.
10083 **/
10084 void
lpfc_sli4_vport_delete_els_xri_aborted(struct lpfc_vport * vport)10085 lpfc_sli4_vport_delete_els_xri_aborted(struct lpfc_vport *vport)
10086 {
10087 struct lpfc_hba *phba = vport->phba;
10088 struct lpfc_sglq *sglq_entry = NULL, *sglq_next = NULL;
10089 unsigned long iflag = 0;
10090
10091 spin_lock_irqsave(&phba->sli4_hba.sgl_list_lock, iflag);
10092 list_for_each_entry_safe(sglq_entry, sglq_next,
10093 &phba->sli4_hba.lpfc_abts_els_sgl_list, list) {
10094 if (sglq_entry->ndlp && sglq_entry->ndlp->vport == vport) {
10095 lpfc_nlp_put(sglq_entry->ndlp);
10096 sglq_entry->ndlp = NULL;
10097 }
10098 }
10099 spin_unlock_irqrestore(&phba->sli4_hba.sgl_list_lock, iflag);
10100 return;
10101 }
10102
10103 /**
10104 * lpfc_sli4_els_xri_aborted - Slow-path process of els xri abort
10105 * @phba: pointer to lpfc hba data structure.
10106 * @axri: pointer to the els xri abort wcqe structure.
10107 *
10108 * This routine is invoked by the worker thread to process a SLI4 slow-path
10109 * ELS aborted xri.
10110 **/
10111 void
lpfc_sli4_els_xri_aborted(struct lpfc_hba * phba,struct sli4_wcqe_xri_aborted * axri)10112 lpfc_sli4_els_xri_aborted(struct lpfc_hba *phba,
10113 struct sli4_wcqe_xri_aborted *axri)
10114 {
10115 uint16_t xri = bf_get(lpfc_wcqe_xa_xri, axri);
10116 uint16_t rxid = bf_get(lpfc_wcqe_xa_remote_xid, axri);
10117 uint16_t lxri = 0;
10118
10119 struct lpfc_sglq *sglq_entry = NULL, *sglq_next = NULL;
10120 unsigned long iflag = 0;
10121 struct lpfc_nodelist *ndlp;
10122 struct lpfc_sli_ring *pring;
10123
10124 pring = lpfc_phba_elsring(phba);
10125
10126 spin_lock_irqsave(&phba->sli4_hba.sgl_list_lock, iflag);
10127 list_for_each_entry_safe(sglq_entry, sglq_next,
10128 &phba->sli4_hba.lpfc_abts_els_sgl_list, list) {
10129 if (sglq_entry->sli4_xritag == xri) {
10130 list_del(&sglq_entry->list);
10131 ndlp = sglq_entry->ndlp;
10132 sglq_entry->ndlp = NULL;
10133 list_add_tail(&sglq_entry->list,
10134 &phba->sli4_hba.lpfc_els_sgl_list);
10135 sglq_entry->state = SGL_FREED;
10136 spin_unlock_irqrestore(&phba->sli4_hba.sgl_list_lock,
10137 iflag);
10138
10139 if (ndlp) {
10140 lpfc_set_rrq_active(phba, ndlp,
10141 sglq_entry->sli4_lxritag,
10142 rxid, 1);
10143 lpfc_nlp_put(ndlp);
10144 }
10145
10146 /* Check if TXQ queue needs to be serviced */
10147 if (pring && !list_empty(&pring->txq))
10148 lpfc_worker_wake_up(phba);
10149 return;
10150 }
10151 }
10152 spin_unlock_irqrestore(&phba->sli4_hba.sgl_list_lock, iflag);
10153 lxri = lpfc_sli4_xri_inrange(phba, xri);
10154 if (lxri == NO_XRI)
10155 return;
10156
10157 spin_lock_irqsave(&phba->hbalock, iflag);
10158 sglq_entry = __lpfc_get_active_sglq(phba, lxri);
10159 if (!sglq_entry || (sglq_entry->sli4_xritag != xri)) {
10160 spin_unlock_irqrestore(&phba->hbalock, iflag);
10161 return;
10162 }
10163 sglq_entry->state = SGL_XRI_ABORTED;
10164 spin_unlock_irqrestore(&phba->hbalock, iflag);
10165 return;
10166 }
10167
10168 /* lpfc_sli_abts_recover_port - Recover a port that failed a BLS_ABORT req.
10169 * @vport: pointer to virtual port object.
10170 * @ndlp: nodelist pointer for the impacted node.
10171 *
10172 * The driver calls this routine in response to an SLI4 XRI ABORT CQE
10173 * or an SLI3 ASYNC_STATUS_CN event from the port. For either event,
10174 * the driver is required to send a LOGO to the remote node before it
10175 * attempts to recover its login to the remote node.
10176 */
10177 void
lpfc_sli_abts_recover_port(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp)10178 lpfc_sli_abts_recover_port(struct lpfc_vport *vport,
10179 struct lpfc_nodelist *ndlp)
10180 {
10181 struct Scsi_Host *shost;
10182 struct lpfc_hba *phba;
10183 unsigned long flags = 0;
10184
10185 shost = lpfc_shost_from_vport(vport);
10186 phba = vport->phba;
10187 if (ndlp->nlp_state != NLP_STE_MAPPED_NODE) {
10188 lpfc_printf_log(phba, KERN_INFO,
10189 LOG_SLI, "3093 No rport recovery needed. "
10190 "rport in state 0x%x\n", ndlp->nlp_state);
10191 return;
10192 }
10193 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
10194 "3094 Start rport recovery on shost id 0x%x "
10195 "fc_id 0x%06x vpi 0x%x rpi 0x%x state 0x%x "
10196 "flags 0x%x\n",
10197 shost->host_no, ndlp->nlp_DID,
10198 vport->vpi, ndlp->nlp_rpi, ndlp->nlp_state,
10199 ndlp->nlp_flag);
10200 /*
10201 * The rport is not responding. Remove the FCP-2 flag to prevent
10202 * an ADISC in the follow-up recovery code.
10203 */
10204 spin_lock_irqsave(&ndlp->lock, flags);
10205 ndlp->nlp_fcp_info &= ~NLP_FCP_2_DEVICE;
10206 ndlp->nlp_flag |= NLP_ISSUE_LOGO;
10207 spin_unlock_irqrestore(&ndlp->lock, flags);
10208 lpfc_unreg_rpi(vport, ndlp);
10209 }
10210
10211