Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
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linux
1/*******************************************************************
2 * This file is part of the Emulex Linux Device Driver for *
3 * Fibre Channel Host Bus Adapters. *
4 * Copyright (C) 2017-2026 Broadcom. All Rights Reserved. The term *
5 * “Broadcom” refers to Broadcom Inc. and/or its subsidiaries. *
6 * Copyright (C) 2004-2016 Emulex. All rights reserved. *
7 * EMULEX and SLI are trademarks of Emulex. *
8 * www.broadcom.com *
9 * Portions Copyright (C) 2004-2005 Christoph Hellwig *
10 * *
11 * This program is free software; you can redistribute it and/or *
12 * modify it under the terms of version 2 of the GNU General *
13 * Public License as published by the Free Software Foundation. *
14 * This program is distributed in the hope that it will be useful. *
15 * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND *
16 * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, *
17 * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE *
18 * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD *
19 * TO BE LEGALLY INVALID. See the GNU General Public License for *
20 * more details, a copy of which can be found in the file COPYING *
21 * included with this package. *
22 *******************************************************************/
23/* See Fibre Channel protocol T11 FC-LS for details */
24#include <linux/blkdev.h>
25#include <linux/pci.h>
26#include <linux/slab.h>
27#include <linux/interrupt.h>
28#include <linux/delay.h>
29
30#include <scsi/scsi.h>
31#include <scsi/scsi_device.h>
32#include <scsi/scsi_host.h>
33#include <scsi/scsi_transport_fc.h>
34#include <uapi/scsi/fc/fc_fs.h>
35#include <uapi/scsi/fc/fc_els.h>
36
37#include "lpfc_hw4.h"
38#include "lpfc_hw.h"
39#include "lpfc_sli.h"
40#include "lpfc_sli4.h"
41#include "lpfc_nl.h"
42#include "lpfc_disc.h"
43#include "lpfc_scsi.h"
44#include "lpfc.h"
45#include "lpfc_logmsg.h"
46#include "lpfc_crtn.h"
47#include "lpfc_vport.h"
48#include "lpfc_debugfs.h"
49
50static int lpfc_els_retry(struct lpfc_hba *, struct lpfc_iocbq *,
51 struct lpfc_iocbq *);
52static void lpfc_cmpl_fabric_iocb(struct lpfc_hba *, struct lpfc_iocbq *,
53 struct lpfc_iocbq *);
54static void lpfc_fabric_abort_vport(struct lpfc_vport *vport);
55static int lpfc_issue_els_fdisc(struct lpfc_vport *vport,
56 struct lpfc_nodelist *ndlp, uint8_t retry);
57static int lpfc_issue_fabric_iocb(struct lpfc_hba *phba,
58 struct lpfc_iocbq *iocb);
59static void lpfc_cmpl_els_edc(struct lpfc_hba *phba,
60 struct lpfc_iocbq *cmdiocb,
61 struct lpfc_iocbq *rspiocb);
62static void lpfc_cmpl_els_uvem(struct lpfc_hba *, struct lpfc_iocbq *,
63 struct lpfc_iocbq *);
64
65static int lpfc_max_els_tries = 3;
66
67static void lpfc_init_cs_ctl_bitmap(struct lpfc_vport *vport);
68static void lpfc_vmid_set_cs_ctl_range(struct lpfc_vport *vport, u32 min, u32 max);
69static void lpfc_vmid_put_cs_ctl(struct lpfc_vport *vport, u32 ctcl_vmid);
70
71/**
72 * lpfc_els_chk_latt - Check host link attention event for a vport
73 * @vport: pointer to a host virtual N_Port data structure.
74 *
75 * This routine checks whether there is an outstanding host link
76 * attention event during the discovery process with the @vport. It is done
77 * by reading the HBA's Host Attention (HA) register. If there is any host
78 * link attention events during this @vport's discovery process, the @vport
79 * shall be marked as FC_ABORT_DISCOVERY, a host link attention clear shall
80 * be issued if the link state is not already in host link cleared state,
81 * and a return code shall indicate whether the host link attention event
82 * had happened.
83 *
84 * Note that, if either the host link is in state LPFC_LINK_DOWN or @vport
85 * state in LPFC_VPORT_READY, the request for checking host link attention
86 * event will be ignored and a return code shall indicate no host link
87 * attention event had happened.
88 *
89 * Return codes
90 * 0 - no host link attention event happened
91 * 1 - host link attention event happened
92 **/
93int
94lpfc_els_chk_latt(struct lpfc_vport *vport)
95{
96 struct lpfc_hba *phba = vport->phba;
97 uint32_t ha_copy;
98
99 if (vport->port_state >= LPFC_VPORT_READY ||
100 phba->link_state == LPFC_LINK_DOWN ||
101 phba->sli_rev > LPFC_SLI_REV3)
102 return 0;
103
104 /* Read the HBA Host Attention Register */
105 if (lpfc_readl(phba->HAregaddr, &ha_copy))
106 return 1;
107
108 if (!(ha_copy & HA_LATT))
109 return 0;
110
111 /* Pending Link Event during Discovery */
112 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
113 "0237 Pending Link Event during "
114 "Discovery: State x%x\n",
115 phba->pport->port_state);
116
117 /* CLEAR_LA should re-enable link attention events and
118 * we should then immediately take a LATT event. The
119 * LATT processing should call lpfc_linkdown() which
120 * will cleanup any left over in-progress discovery
121 * events.
122 */
123 set_bit(FC_ABORT_DISCOVERY, &vport->fc_flag);
124
125 if (phba->link_state != LPFC_CLEAR_LA)
126 lpfc_issue_clear_la(phba, vport);
127
128 return 1;
129}
130
131static bool lpfc_is_els_acc_rsp(struct lpfc_dmabuf *buf)
132{
133 struct fc_els_ls_acc *rsp = buf->virt;
134
135 if (rsp && rsp->la_cmd == ELS_LS_ACC)
136 return true;
137 return false;
138}
139
140/**
141 * lpfc_prep_els_iocb - Allocate and prepare a lpfc iocb data structure
142 * @vport: pointer to a host virtual N_Port data structure.
143 * @expect_rsp: flag indicating whether response is expected.
144 * @cmd_size: size of the ELS command.
145 * @retry: number of retries to the command when it fails.
146 * @ndlp: pointer to a node-list data structure.
147 * @did: destination identifier.
148 * @elscmd: the ELS command code.
149 *
150 * This routine is used for allocating a lpfc-IOCB data structure from
151 * the driver lpfc-IOCB free-list and prepare the IOCB with the parameters
152 * passed into the routine for discovery state machine to issue an Extended
153 * Link Service (ELS) commands. It is a generic lpfc-IOCB allocation
154 * and preparation routine that is used by all the discovery state machine
155 * routines and the ELS command-specific fields will be later set up by
156 * the individual discovery machine routines after calling this routine
157 * allocating and preparing a generic IOCB data structure. It fills in the
158 * Buffer Descriptor Entries (BDEs), allocates buffers for both command
159 * payload and response payload (if expected). The reference count on the
160 * ndlp is incremented by 1 and the reference to the ndlp is put into
161 * ndlp of the IOCB data structure for this IOCB to hold the ndlp
162 * reference for the command's callback function to access later.
163 *
164 * Return code
165 * Pointer to the newly allocated/prepared els iocb data structure
166 * NULL - when els iocb data structure allocation/preparation failed
167 **/
168struct lpfc_iocbq *
169lpfc_prep_els_iocb(struct lpfc_vport *vport, u8 expect_rsp,
170 u16 cmd_size, u8 retry,
171 struct lpfc_nodelist *ndlp, u32 did,
172 u32 elscmd)
173{
174 struct lpfc_hba *phba = vport->phba;
175 struct lpfc_iocbq *elsiocb;
176 struct lpfc_dmabuf *pcmd, *prsp, *pbuflist, *bmp;
177 struct ulp_bde64_le *bpl;
178 u32 timeout = 0;
179
180 if (!lpfc_is_link_up(phba))
181 return NULL;
182
183 /* Allocate buffer for command iocb */
184 elsiocb = lpfc_sli_get_iocbq(phba);
185 if (!elsiocb)
186 return NULL;
187
188 /*
189 * If this command is for fabric controller and HBA running
190 * in FIP mode send FLOGI, FDISC and LOGO as FIP frames.
191 */
192 if (did == Fabric_DID &&
193 test_bit(HBA_FIP_SUPPORT, &phba->hba_flag) &&
194 (elscmd == ELS_CMD_FLOGI ||
195 elscmd == ELS_CMD_FDISC ||
196 elscmd == ELS_CMD_LOGO))
197 switch (elscmd) {
198 case ELS_CMD_FLOGI:
199 elsiocb->cmd_flag |=
200 ((LPFC_ELS_ID_FLOGI << LPFC_FIP_ELS_ID_SHIFT)
201 & LPFC_FIP_ELS_ID_MASK);
202 break;
203 case ELS_CMD_FDISC:
204 elsiocb->cmd_flag |=
205 ((LPFC_ELS_ID_FDISC << LPFC_FIP_ELS_ID_SHIFT)
206 & LPFC_FIP_ELS_ID_MASK);
207 break;
208 case ELS_CMD_LOGO:
209 elsiocb->cmd_flag |=
210 ((LPFC_ELS_ID_LOGO << LPFC_FIP_ELS_ID_SHIFT)
211 & LPFC_FIP_ELS_ID_MASK);
212 break;
213 }
214 else
215 elsiocb->cmd_flag &= ~LPFC_FIP_ELS_ID_MASK;
216
217 /* fill in BDEs for command */
218 /* Allocate buffer for command payload */
219 pcmd = kmalloc_obj(*pcmd);
220 if (pcmd)
221 pcmd->virt = lpfc_mbuf_alloc(phba, MEM_PRI, &pcmd->phys);
222 if (!pcmd || !pcmd->virt)
223 goto els_iocb_free_pcmb_exit;
224
225 INIT_LIST_HEAD(&pcmd->list);
226
227 /* Allocate buffer for response payload */
228 if (expect_rsp) {
229 prsp = kmalloc_obj(*prsp);
230 if (prsp)
231 prsp->virt = lpfc_mbuf_alloc(phba, MEM_PRI,
232 &prsp->phys);
233 if (!prsp || !prsp->virt)
234 goto els_iocb_free_prsp_exit;
235 INIT_LIST_HEAD(&prsp->list);
236 } else {
237 prsp = NULL;
238 }
239
240 /* Allocate buffer for Buffer ptr list */
241 pbuflist = kmalloc_obj(*pbuflist);
242 if (pbuflist)
243 pbuflist->virt = lpfc_mbuf_alloc(phba, MEM_PRI,
244 &pbuflist->phys);
245 if (!pbuflist || !pbuflist->virt)
246 goto els_iocb_free_pbuf_exit;
247
248 INIT_LIST_HEAD(&pbuflist->list);
249
250 if (expect_rsp) {
251 switch (elscmd) {
252 case ELS_CMD_FLOGI:
253 timeout = FF_DEF_RATOV * 2;
254 break;
255 case ELS_CMD_LOGO:
256 timeout = phba->fc_ratov;
257 break;
258 default:
259 timeout = phba->fc_ratov * 2;
260 }
261
262 /* Fill SGE for the num bde count */
263 elsiocb->num_bdes = 2;
264 }
265
266 if (phba->sli_rev == LPFC_SLI_REV4)
267 bmp = pcmd;
268 else
269 bmp = pbuflist;
270
271 lpfc_sli_prep_els_req_rsp(phba, elsiocb, vport, bmp, cmd_size, did,
272 elscmd, timeout, expect_rsp);
273
274 bpl = (struct ulp_bde64_le *)pbuflist->virt;
275 bpl->addr_low = cpu_to_le32(putPaddrLow(pcmd->phys));
276 bpl->addr_high = cpu_to_le32(putPaddrHigh(pcmd->phys));
277 bpl->type_size = cpu_to_le32(cmd_size);
278 bpl->type_size |= cpu_to_le32(ULP_BDE64_TYPE_BDE_64);
279
280 if (expect_rsp) {
281 bpl++;
282 bpl->addr_low = cpu_to_le32(putPaddrLow(prsp->phys));
283 bpl->addr_high = cpu_to_le32(putPaddrHigh(prsp->phys));
284 bpl->type_size = cpu_to_le32(FCELSSIZE);
285 bpl->type_size |= cpu_to_le32(ULP_BDE64_TYPE_BDE_64);
286 }
287
288 elsiocb->cmd_dmabuf = pcmd;
289 elsiocb->bpl_dmabuf = pbuflist;
290 elsiocb->retry = retry;
291 elsiocb->vport = vport;
292 elsiocb->drvrTimeout = (phba->fc_ratov << 1) + LPFC_DRVR_TIMEOUT;
293
294 if (prsp)
295 list_add(&prsp->list, &pcmd->list);
296 if (expect_rsp) {
297 /* Xmit ELS command <elsCmd> to remote NPORT <did> */
298 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
299 "0116 Xmit ELS command x%x to remote "
300 "NPORT x%x I/O tag: x%x, port state:x%x "
301 "rpi x%x fc_flag:x%lx\n",
302 elscmd, did, elsiocb->iotag,
303 vport->port_state, ndlp->nlp_rpi,
304 vport->fc_flag);
305 } else {
306 /* Xmit ELS response <elsCmd> to remote NPORT <did> */
307 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
308 "0117 Xmit ELS response x%x to remote "
309 "NPORT x%x I/O tag: x%x, size: x%x "
310 "port_state x%x rpi x%x fc_flag x%lx\n",
311 elscmd, ndlp->nlp_DID, elsiocb->iotag,
312 cmd_size, vport->port_state,
313 ndlp->nlp_rpi, vport->fc_flag);
314 }
315
316 return elsiocb;
317
318els_iocb_free_pbuf_exit:
319 if (expect_rsp)
320 lpfc_mbuf_free(phba, prsp->virt, prsp->phys);
321 kfree(pbuflist);
322
323els_iocb_free_prsp_exit:
324 lpfc_mbuf_free(phba, pcmd->virt, pcmd->phys);
325 kfree(prsp);
326
327els_iocb_free_pcmb_exit:
328 kfree(pcmd);
329 lpfc_sli_release_iocbq(phba, elsiocb);
330 return NULL;
331}
332
333/**
334 * lpfc_issue_fabric_reglogin - Issue fabric registration login for a vport
335 * @vport: pointer to a host virtual N_Port data structure.
336 *
337 * This routine issues a fabric registration login for a @vport. An
338 * active ndlp node with Fabric_DID must already exist for this @vport.
339 * The routine invokes two mailbox commands to carry out fabric registration
340 * login through the HBA firmware: the first mailbox command requests the
341 * HBA to perform link configuration for the @vport; and the second mailbox
342 * command requests the HBA to perform the actual fabric registration login
343 * with the @vport.
344 *
345 * Return code
346 * 0 - successfully issued fabric registration login for @vport
347 * -ENXIO -- failed to issue fabric registration login for @vport
348 **/
349int
350lpfc_issue_fabric_reglogin(struct lpfc_vport *vport)
351{
352 struct lpfc_hba *phba = vport->phba;
353 LPFC_MBOXQ_t *mbox;
354 struct lpfc_nodelist *ndlp;
355 struct serv_parm *sp;
356 int rc;
357 int err = 0;
358
359 sp = &phba->fc_fabparam;
360 ndlp = lpfc_findnode_did(vport, Fabric_DID);
361 if (!ndlp) {
362 err = 1;
363 goto fail;
364 }
365
366 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
367 if (!mbox) {
368 err = 2;
369 goto fail;
370 }
371
372 vport->port_state = LPFC_FABRIC_CFG_LINK;
373 lpfc_config_link(phba, mbox);
374 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
375 mbox->vport = vport;
376
377 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
378 if (rc == MBX_NOT_FINISHED) {
379 err = 3;
380 goto fail_free_mbox;
381 }
382
383 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
384 if (!mbox) {
385 err = 4;
386 goto fail;
387 }
388 rc = lpfc_reg_rpi(phba, vport->vpi, Fabric_DID, (uint8_t *)sp, mbox,
389 ndlp->nlp_rpi);
390 if (rc) {
391 err = 5;
392 goto fail_free_mbox;
393 }
394
395 mbox->mbox_cmpl = lpfc_mbx_cmpl_fabric_reg_login;
396 mbox->vport = vport;
397 /* increment the reference count on ndlp to hold reference
398 * for the callback routine.
399 */
400 mbox->ctx_ndlp = lpfc_nlp_get(ndlp);
401 if (!mbox->ctx_ndlp) {
402 err = 6;
403 goto fail_free_mbox;
404 }
405
406 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
407 if (rc == MBX_NOT_FINISHED) {
408 err = 7;
409 goto fail_issue_reg_login;
410 }
411
412 return 0;
413
414fail_issue_reg_login:
415 /* decrement the reference count on ndlp just incremented
416 * for the failed mbox command.
417 */
418 lpfc_nlp_put(ndlp);
419fail_free_mbox:
420 lpfc_mbox_rsrc_cleanup(phba, mbox, MBOX_THD_UNLOCKED);
421fail:
422 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
423 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
424 "0249 Cannot issue Register Fabric login: Err %d\n",
425 err);
426 return -ENXIO;
427}
428
429/**
430 * lpfc_issue_reg_vfi - Register VFI for this vport's fabric login
431 * @vport: pointer to a host virtual N_Port data structure.
432 *
433 * This routine issues a REG_VFI mailbox for the vfi, vpi, fcfi triplet for
434 * the @vport. This mailbox command is necessary for SLI4 port only.
435 *
436 * Return code
437 * 0 - successfully issued REG_VFI for @vport
438 * A failure code otherwise.
439 **/
440int
441lpfc_issue_reg_vfi(struct lpfc_vport *vport)
442{
443 struct lpfc_hba *phba = vport->phba;
444 LPFC_MBOXQ_t *mboxq = NULL;
445 struct lpfc_nodelist *ndlp;
446 struct lpfc_dmabuf *dmabuf = NULL;
447 int rc = 0;
448
449 /* move forward in case of SLI4 FC port loopback test and pt2pt mode */
450 if ((phba->sli_rev == LPFC_SLI_REV4) &&
451 !(phba->link_flag & LS_LOOPBACK_MODE) &&
452 !test_bit(FC_PT2PT, &vport->fc_flag)) {
453 ndlp = lpfc_findnode_did(vport, Fabric_DID);
454 if (!ndlp) {
455 rc = -ENODEV;
456 goto fail;
457 }
458 }
459
460 mboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
461 if (!mboxq) {
462 rc = -ENOMEM;
463 goto fail;
464 }
465
466 /* Supply CSP's only if we are fabric connect or pt-to-pt connect */
467 if (test_bit(FC_FABRIC, &vport->fc_flag) ||
468 test_bit(FC_PT2PT, &vport->fc_flag)) {
469 rc = lpfc_mbox_rsrc_prep(phba, mboxq);
470 if (rc) {
471 rc = -ENOMEM;
472 goto fail_mbox;
473 }
474 dmabuf = mboxq->ctx_buf;
475 memcpy(dmabuf->virt, &phba->fc_fabparam,
476 sizeof(struct serv_parm));
477 }
478
479 vport->port_state = LPFC_FABRIC_CFG_LINK;
480 if (dmabuf) {
481 lpfc_reg_vfi(mboxq, vport, dmabuf->phys);
482 /* lpfc_reg_vfi memsets the mailbox. Restore the ctx_buf. */
483 mboxq->ctx_buf = dmabuf;
484 } else {
485 lpfc_reg_vfi(mboxq, vport, 0);
486 }
487
488 mboxq->mbox_cmpl = lpfc_mbx_cmpl_reg_vfi;
489 mboxq->vport = vport;
490 rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_NOWAIT);
491 if (rc == MBX_NOT_FINISHED) {
492 rc = -ENXIO;
493 goto fail_mbox;
494 }
495 return 0;
496
497fail_mbox:
498 lpfc_mbox_rsrc_cleanup(phba, mboxq, MBOX_THD_UNLOCKED);
499fail:
500 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
501 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
502 "0289 Issue Register VFI failed: Err %d\n", rc);
503 return rc;
504}
505
506/**
507 * lpfc_issue_unreg_vfi - Unregister VFI for this vport's fabric login
508 * @vport: pointer to a host virtual N_Port data structure.
509 *
510 * This routine issues a UNREG_VFI mailbox with the vfi, vpi, fcfi triplet for
511 * the @vport. This mailbox command is necessary for SLI4 port only.
512 *
513 * Return code
514 * 0 - successfully issued REG_VFI for @vport
515 * A failure code otherwise.
516 **/
517int
518lpfc_issue_unreg_vfi(struct lpfc_vport *vport)
519{
520 struct lpfc_hba *phba = vport->phba;
521 LPFC_MBOXQ_t *mboxq;
522 int rc;
523
524 mboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
525 if (!mboxq) {
526 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
527 "2556 UNREG_VFI mbox allocation failed"
528 "HBA state x%x\n", phba->pport->port_state);
529 return -ENOMEM;
530 }
531
532 lpfc_unreg_vfi(mboxq, vport);
533 mboxq->vport = vport;
534 mboxq->mbox_cmpl = lpfc_unregister_vfi_cmpl;
535
536 rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_NOWAIT);
537 if (rc == MBX_NOT_FINISHED) {
538 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
539 "2557 UNREG_VFI issue mbox failed rc x%x "
540 "HBA state x%x\n",
541 rc, phba->pport->port_state);
542 mempool_free(mboxq, phba->mbox_mem_pool);
543 return -EIO;
544 }
545
546 clear_bit(FC_VFI_REGISTERED, &vport->fc_flag);
547 return 0;
548}
549
550/**
551 * lpfc_check_clean_addr_bit - Check whether assigned FCID is clean.
552 * @vport: pointer to a host virtual N_Port data structure.
553 * @sp: pointer to service parameter data structure.
554 *
555 * This routine is called from FLOGI/FDISC completion handler functions.
556 * lpfc_check_clean_addr_bit return 1 when FCID/Fabric portname/ Fabric
557 * node nodename is changed in the completion service parameter else return
558 * 0. This function also set flag in the vport data structure to delay
559 * NP_Port discovery after the FLOGI/FDISC completion if Clean address bit
560 * in FLOGI/FDISC response is cleared and FCID/Fabric portname/ Fabric
561 * node nodename is changed in the completion service parameter.
562 *
563 * Return code
564 * 0 - FCID and Fabric Nodename and Fabric portname is not changed.
565 * 1 - FCID or Fabric Nodename or Fabric portname is changed.
566 *
567 **/
568static uint8_t
569lpfc_check_clean_addr_bit(struct lpfc_vport *vport,
570 struct serv_parm *sp)
571{
572 struct lpfc_hba *phba = vport->phba;
573 uint8_t fabric_param_changed = 0;
574
575 if ((vport->fc_prevDID != vport->fc_myDID) ||
576 memcmp(&vport->fabric_portname, &sp->portName,
577 sizeof(struct lpfc_name)) ||
578 memcmp(&vport->fabric_nodename, &sp->nodeName,
579 sizeof(struct lpfc_name)) ||
580 (vport->vport_flag & FAWWPN_PARAM_CHG)) {
581 fabric_param_changed = 1;
582 vport->vport_flag &= ~FAWWPN_PARAM_CHG;
583 }
584 /*
585 * Word 1 Bit 31 in common service parameter is overloaded.
586 * Word 1 Bit 31 in FLOGI request is multiple NPort request
587 * Word 1 Bit 31 in FLOGI response is clean address bit
588 *
589 * If fabric parameter is changed and clean address bit is
590 * cleared delay nport discovery if
591 * - vport->fc_prevDID != 0 (not initial discovery) OR
592 * - lpfc_delay_discovery module parameter is set.
593 */
594 if (fabric_param_changed && !sp->cmn.clean_address_bit &&
595 (vport->fc_prevDID || phba->cfg_delay_discovery))
596 set_bit(FC_DISC_DELAYED, &vport->fc_flag);
597
598 return fabric_param_changed;
599}
600
601
602/**
603 * lpfc_cmpl_els_flogi_fabric - Completion function for flogi to a fabric port
604 * @vport: pointer to a host virtual N_Port data structure.
605 * @ndlp: pointer to a node-list data structure.
606 * @sp: pointer to service parameter data structure.
607 * @ulp_word4: command response value
608 *
609 * This routine is invoked by the lpfc_cmpl_els_flogi() completion callback
610 * function to handle the completion of a Fabric Login (FLOGI) into a fabric
611 * port in a fabric topology. It properly sets up the parameters to the @ndlp
612 * from the IOCB response. It also check the newly assigned N_Port ID to the
613 * @vport against the previously assigned N_Port ID. If it is different from
614 * the previously assigned Destination ID (DID), the lpfc_unreg_rpi() routine
615 * is invoked on all the remaining nodes with the @vport to unregister the
616 * Remote Port Indicators (RPIs). Finally, the lpfc_issue_fabric_reglogin()
617 * is invoked to register login to the fabric.
618 *
619 * Return code
620 * 0 - Success (currently, always return 0)
621 **/
622static int
623lpfc_cmpl_els_flogi_fabric(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
624 struct serv_parm *sp, uint32_t ulp_word4)
625{
626 struct lpfc_hba *phba = vport->phba;
627 struct lpfc_nodelist *np;
628 struct lpfc_nodelist *next_np;
629 uint8_t fabric_param_changed;
630
631 set_bit(FC_FABRIC, &vport->fc_flag);
632
633 phba->fc_edtov = be32_to_cpu(sp->cmn.e_d_tov);
634 if (sp->cmn.edtovResolution) /* E_D_TOV ticks are in nanoseconds */
635 phba->fc_edtov = (phba->fc_edtov + 999999) / 1000000;
636
637 phba->fc_edtovResol = sp->cmn.edtovResolution;
638 phba->fc_ratov = (be32_to_cpu(sp->cmn.w2.r_a_tov) + 999) / 1000;
639
640 if (phba->fc_topology == LPFC_TOPOLOGY_LOOP)
641 set_bit(FC_PUBLIC_LOOP, &vport->fc_flag);
642
643 vport->fc_myDID = ulp_word4 & Mask_DID;
644 memcpy(&ndlp->nlp_portname, &sp->portName, sizeof(struct lpfc_name));
645 memcpy(&ndlp->nlp_nodename, &sp->nodeName, sizeof(struct lpfc_name));
646 ndlp->nlp_class_sup = 0;
647 if (sp->cls1.classValid)
648 ndlp->nlp_class_sup |= FC_COS_CLASS1;
649 if (sp->cls2.classValid)
650 ndlp->nlp_class_sup |= FC_COS_CLASS2;
651 if (sp->cls3.classValid)
652 ndlp->nlp_class_sup |= FC_COS_CLASS3;
653 ndlp->nlp_maxframe = ((sp->cmn.bbRcvSizeMsb & 0x0F) << 8) |
654 sp->cmn.bbRcvSizeLsb;
655
656 fabric_param_changed = lpfc_check_clean_addr_bit(vport, sp);
657 if (fabric_param_changed) {
658 /* Reset FDMI attribute masks based on config parameter */
659 if (phba->cfg_enable_SmartSAN ||
660 (phba->cfg_fdmi_on == LPFC_FDMI_SUPPORT)) {
661 /* Setup appropriate attribute masks */
662 vport->fdmi_hba_mask = LPFC_FDMI2_HBA_ATTR;
663 if (phba->cfg_enable_SmartSAN)
664 vport->fdmi_port_mask = LPFC_FDMI2_SMART_ATTR;
665 else
666 vport->fdmi_port_mask = LPFC_FDMI2_PORT_ATTR;
667 } else {
668 vport->fdmi_hba_mask = 0;
669 vport->fdmi_port_mask = 0;
670 }
671
672 }
673 memcpy(&vport->fabric_portname, &sp->portName,
674 sizeof(struct lpfc_name));
675 memcpy(&vport->fabric_nodename, &sp->nodeName,
676 sizeof(struct lpfc_name));
677 memcpy(&phba->fc_fabparam, sp, sizeof(struct serv_parm));
678
679 if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) {
680 if (sp->cmn.response_multiple_NPort) {
681 lpfc_printf_vlog(vport, KERN_WARNING,
682 LOG_ELS | LOG_VPORT,
683 "1816 FLOGI NPIV supported, "
684 "response data 0x%x\n",
685 sp->cmn.response_multiple_NPort);
686 spin_lock_irq(&phba->hbalock);
687 phba->link_flag |= LS_NPIV_FAB_SUPPORTED;
688 spin_unlock_irq(&phba->hbalock);
689 } else {
690 /* Because we asked f/w for NPIV it still expects us
691 to call reg_vnpid at least for the physical host */
692 lpfc_printf_vlog(vport, KERN_WARNING,
693 LOG_ELS | LOG_VPORT,
694 "1817 Fabric does not support NPIV "
695 "- configuring single port mode.\n");
696 spin_lock_irq(&phba->hbalock);
697 phba->link_flag &= ~LS_NPIV_FAB_SUPPORTED;
698 spin_unlock_irq(&phba->hbalock);
699 }
700 }
701
702 /*
703 * For FC we need to do some special processing because of the SLI
704 * Port's default settings of the Common Service Parameters.
705 */
706 if ((phba->sli_rev == LPFC_SLI_REV4) &&
707 (phba->sli4_hba.lnk_info.lnk_tp == LPFC_LNK_TYPE_FC)) {
708 /* If physical FC port changed, unreg VFI and ALL VPIs / RPIs */
709 if (fabric_param_changed)
710 lpfc_unregister_fcf_prep(phba);
711
712 /* This should just update the VFI CSPs*/
713 if (test_bit(FC_VFI_REGISTERED, &vport->fc_flag))
714 lpfc_issue_reg_vfi(vport);
715 }
716
717 if (fabric_param_changed &&
718 !test_bit(FC_VPORT_NEEDS_REG_VPI, &vport->fc_flag)) {
719
720 /* If our NportID changed, we need to ensure all
721 * remaining NPORTs get unreg_login'ed.
722 */
723 list_for_each_entry_safe(np, next_np,
724 &vport->fc_nodes, nlp_listp) {
725 if ((np->nlp_state != NLP_STE_NPR_NODE) ||
726 !test_bit(NLP_NPR_ADISC, &np->nlp_flag))
727 continue;
728 clear_bit(NLP_NPR_ADISC, &np->nlp_flag);
729 lpfc_unreg_rpi(vport, np);
730 }
731 lpfc_cleanup_pending_mbox(vport);
732
733 if (phba->sli_rev == LPFC_SLI_REV4) {
734 lpfc_sli4_unreg_all_rpis(vport);
735 lpfc_mbx_unreg_vpi(vport);
736 set_bit(FC_VPORT_NEEDS_INIT_VPI, &vport->fc_flag);
737 }
738
739 /*
740 * For SLI3 and SLI4, the VPI needs to be reregistered in
741 * response to this fabric parameter change event.
742 */
743 set_bit(FC_VPORT_NEEDS_REG_VPI, &vport->fc_flag);
744 } else if ((phba->sli_rev == LPFC_SLI_REV4) &&
745 !test_bit(FC_VPORT_NEEDS_REG_VPI, &vport->fc_flag)) {
746 /*
747 * Driver needs to re-reg VPI in order for f/w
748 * to update the MAC address.
749 */
750 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
751 lpfc_register_new_vport(phba, vport, ndlp);
752 return 0;
753 }
754
755 if (phba->sli_rev < LPFC_SLI_REV4) {
756 lpfc_nlp_set_state(vport, ndlp, NLP_STE_REG_LOGIN_ISSUE);
757 if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED &&
758 test_bit(FC_VPORT_NEEDS_REG_VPI, &vport->fc_flag))
759 lpfc_register_new_vport(phba, vport, ndlp);
760 else
761 lpfc_issue_fabric_reglogin(vport);
762 } else {
763 ndlp->nlp_type |= NLP_FABRIC;
764 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
765 if ((!test_bit(FC_VPORT_NEEDS_REG_VPI, &vport->fc_flag)) &&
766 (vport->vpi_state & LPFC_VPI_REGISTERED)) {
767 lpfc_start_fdiscs(phba);
768 lpfc_do_scr_ns_plogi(phba, vport);
769 } else if (test_bit(FC_VFI_REGISTERED, &vport->fc_flag))
770 lpfc_issue_init_vpi(vport);
771 else {
772 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
773 "3135 Need register VFI: (x%x/%x)\n",
774 vport->fc_prevDID, vport->fc_myDID);
775 lpfc_issue_reg_vfi(vport);
776 }
777 }
778 return 0;
779}
780
781/**
782 * lpfc_cmpl_els_flogi_nport - Completion function for flogi to an N_Port
783 * @vport: pointer to a host virtual N_Port data structure.
784 * @ndlp: pointer to a node-list data structure.
785 * @sp: pointer to service parameter data structure.
786 *
787 * This routine is invoked by the lpfc_cmpl_els_flogi() completion callback
788 * function to handle the completion of a Fabric Login (FLOGI) into an N_Port
789 * in a point-to-point topology. First, the @vport's N_Port Name is compared
790 * with the received N_Port Name: if the @vport's N_Port Name is greater than
791 * the received N_Port Name lexicographically, this node shall assign local
792 * N_Port ID (PT2PT_LocalID: 1) and remote N_Port ID (PT2PT_RemoteID: 2) and
793 * will send out Port Login (PLOGI) with the N_Port IDs assigned. Otherwise,
794 * this node shall just wait for the remote node to issue PLOGI and assign
795 * N_Port IDs.
796 *
797 * Return code
798 * 0 - Success
799 * -ENXIO - Fail
800 **/
801static int
802lpfc_cmpl_els_flogi_nport(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
803 struct serv_parm *sp)
804{
805 struct lpfc_hba *phba = vport->phba;
806 LPFC_MBOXQ_t *mbox;
807 int rc;
808
809 clear_bit(FC_FABRIC, &vport->fc_flag);
810 clear_bit(FC_PUBLIC_LOOP, &vport->fc_flag);
811 set_bit(FC_PT2PT, &vport->fc_flag);
812
813 /* If we are pt2pt with another NPort, force NPIV off! */
814 phba->sli3_options &= ~LPFC_SLI3_NPIV_ENABLED;
815
816 /* If physical FC port changed, unreg VFI and ALL VPIs / RPIs */
817 if ((phba->sli_rev == LPFC_SLI_REV4) && phba->fc_topology_changed) {
818 lpfc_unregister_fcf_prep(phba);
819 clear_bit(FC_VFI_REGISTERED, &vport->fc_flag);
820 phba->fc_topology_changed = 0;
821 }
822
823 rc = memcmp(&vport->fc_portname, &sp->portName,
824 sizeof(vport->fc_portname));
825
826 if (rc >= 0) {
827 /* This side will initiate the PLOGI */
828 set_bit(FC_PT2PT_PLOGI, &vport->fc_flag);
829
830 /*
831 * N_Port ID cannot be 0, set our Id to LocalID
832 * the other side will be RemoteID.
833 */
834
835 /* not equal */
836 if (rc)
837 vport->fc_myDID = PT2PT_LocalID;
838
839 /* If not registered with a transport, decrement ndlp reference
840 * count indicating that ndlp can be safely released when other
841 * references are removed.
842 */
843 if (!(ndlp->fc4_xpt_flags & (SCSI_XPT_REGD | NVME_XPT_REGD)))
844 lpfc_nlp_put(ndlp);
845
846 ndlp = lpfc_findnode_did(vport, PT2PT_RemoteID);
847 if (!ndlp) {
848 /*
849 * Cannot find existing Fabric ndlp, so allocate a
850 * new one
851 */
852 ndlp = lpfc_nlp_init(vport, PT2PT_RemoteID);
853 if (!ndlp)
854 goto fail;
855 }
856
857 memcpy(&ndlp->nlp_portname, &sp->portName,
858 sizeof(struct lpfc_name));
859 memcpy(&ndlp->nlp_nodename, &sp->nodeName,
860 sizeof(struct lpfc_name));
861 /* Set state will put ndlp onto node list if not already done */
862 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
863 set_bit(NLP_NPR_2B_DISC, &ndlp->nlp_flag);
864
865 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
866 if (!mbox)
867 goto fail;
868
869 lpfc_config_link(phba, mbox);
870
871 mbox->mbox_cmpl = lpfc_mbx_cmpl_local_config_link;
872 mbox->vport = vport;
873 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
874 if (rc == MBX_NOT_FINISHED) {
875 mempool_free(mbox, phba->mbox_mem_pool);
876 goto fail;
877 }
878 } else {
879 /* This side will wait for the PLOGI. If not registered with
880 * a transport, decrement node reference count indicating that
881 * ndlp can be released when other references are removed.
882 */
883 if (!(ndlp->fc4_xpt_flags & (SCSI_XPT_REGD | NVME_XPT_REGD)))
884 lpfc_nlp_put(ndlp);
885
886 /* Start discovery - this should just do CLEAR_LA */
887 lpfc_disc_start(vport);
888 }
889
890 return 0;
891fail:
892 return -ENXIO;
893}
894
895/**
896 * lpfc_cmpl_els_flogi - Completion callback function for flogi
897 * @phba: pointer to lpfc hba data structure.
898 * @cmdiocb: pointer to lpfc command iocb data structure.
899 * @rspiocb: pointer to lpfc response iocb data structure.
900 *
901 * This routine is the top-level completion callback function for issuing
902 * a Fabric Login (FLOGI) command. If the response IOCB reported error,
903 * the lpfc_els_retry() routine shall be invoked to retry the FLOGI. If
904 * retry has been made (either immediately or delayed with lpfc_els_retry()
905 * returning 1), the command IOCB will be released and function returned.
906 * If the retry attempt has been given up (possibly reach the maximum
907 * number of retries), one additional decrement of ndlp reference shall be
908 * invoked before going out after releasing the command IOCB. This will
909 * actually release the remote node (Note, lpfc_els_free_iocb() will also
910 * invoke one decrement of ndlp reference count). If no error reported in
911 * the IOCB status, the command Port ID field is used to determine whether
912 * this is a point-to-point topology or a fabric topology: if the Port ID
913 * field is assigned, it is a fabric topology; otherwise, it is a
914 * point-to-point topology. The routine lpfc_cmpl_els_flogi_fabric() or
915 * lpfc_cmpl_els_flogi_nport() shall be invoked accordingly to handle the
916 * specific topology completion conditions.
917 **/
918static void
919lpfc_cmpl_els_flogi(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
920 struct lpfc_iocbq *rspiocb)
921{
922 struct lpfc_vport *vport = cmdiocb->vport;
923 struct lpfc_nodelist *ndlp = cmdiocb->ndlp;
924 IOCB_t *irsp;
925 struct lpfc_dmabuf *pcmd = cmdiocb->cmd_dmabuf, *prsp;
926 struct serv_parm *sp;
927 uint16_t fcf_index;
928 int rc;
929 u32 ulp_status, ulp_word4, tmo;
930 bool flogi_in_retry = false;
931
932 /* Check to see if link went down during discovery */
933 if (lpfc_els_chk_latt(vport)) {
934 /* One additional decrement on node reference count to
935 * trigger the release of the node. Make sure the ndlp
936 * is marked NLP_DROPPED.
937 */
938 if (!test_bit(NLP_IN_DEV_LOSS, &ndlp->nlp_flag) &&
939 !test_bit(NLP_DROPPED, &ndlp->nlp_flag) &&
940 !(ndlp->fc4_xpt_flags & SCSI_XPT_REGD)) {
941 set_bit(NLP_DROPPED, &ndlp->nlp_flag);
942 lpfc_nlp_put(ndlp);
943 }
944 goto out;
945 }
946
947 ulp_status = get_job_ulpstatus(phba, rspiocb);
948 ulp_word4 = get_job_word4(phba, rspiocb);
949
950 if (phba->sli_rev == LPFC_SLI_REV4) {
951 tmo = get_wqe_tmo(cmdiocb);
952 } else {
953 irsp = &rspiocb->iocb;
954 tmo = irsp->ulpTimeout;
955 }
956
957 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
958 "FLOGI cmpl: status:x%x/x%x state:x%x",
959 ulp_status, ulp_word4,
960 vport->port_state);
961
962 if (ulp_status) {
963 /*
964 * In case of FIP mode, perform roundrobin FCF failover
965 * due to new FCF discovery
966 */
967 if (test_bit(HBA_FIP_SUPPORT, &phba->hba_flag) &&
968 (phba->fcf.fcf_flag & FCF_DISCOVERY)) {
969 if (phba->link_state < LPFC_LINK_UP)
970 goto stop_rr_fcf_flogi;
971 if ((phba->fcoe_cvl_eventtag_attn ==
972 phba->fcoe_cvl_eventtag) &&
973 (ulp_status == IOSTAT_LOCAL_REJECT) &&
974 ((ulp_word4 & IOERR_PARAM_MASK) ==
975 IOERR_SLI_ABORTED))
976 goto stop_rr_fcf_flogi;
977 else
978 phba->fcoe_cvl_eventtag_attn =
979 phba->fcoe_cvl_eventtag;
980 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP | LOG_ELS,
981 "2611 FLOGI FCF (x%x), "
982 "status:x%x/x%x, tmo:x%x, perform "
983 "roundrobin FCF failover\n",
984 phba->fcf.current_rec.fcf_indx,
985 ulp_status, ulp_word4, tmo);
986 lpfc_sli4_set_fcf_flogi_fail(phba,
987 phba->fcf.current_rec.fcf_indx);
988 fcf_index = lpfc_sli4_fcf_rr_next_index_get(phba);
989 rc = lpfc_sli4_fcf_rr_next_proc(vport, fcf_index);
990 if (rc)
991 goto out;
992 }
993
994stop_rr_fcf_flogi:
995 /* FLOGI failure */
996 if (!(ulp_status == IOSTAT_LOCAL_REJECT &&
997 ((ulp_word4 & IOERR_PARAM_MASK) ==
998 IOERR_LOOP_OPEN_FAILURE)))
999 lpfc_vlog_msg(vport, KERN_WARNING, LOG_ELS,
1000 "2858 FLOGI Status:x%x/x%x TMO"
1001 ":x%x Data x%lx x%x x%lx x%x\n",
1002 ulp_status, ulp_word4, tmo,
1003 phba->hba_flag, phba->fcf.fcf_flag,
1004 ndlp->nlp_flag, ndlp->fc4_xpt_flags);
1005
1006 /* Check for retry */
1007 if (lpfc_els_retry(phba, cmdiocb, rspiocb)) {
1008 /* Address a timing race with dev_loss. If dev_loss
1009 * is active on this FPort node, put the initial ref
1010 * count back to stop premature node release actions.
1011 */
1012 lpfc_check_nlp_post_devloss(vport, ndlp);
1013 flogi_in_retry = true;
1014 goto out;
1015 }
1016
1017 /* The FLOGI will not be retried. If the FPort node is not
1018 * registered with the SCSI transport, remove the initial
1019 * reference to trigger node release.
1020 */
1021 if (!test_bit(NLP_IN_DEV_LOSS, &ndlp->nlp_flag) &&
1022 !test_bit(NLP_DROPPED, &ndlp->nlp_flag) &&
1023 !(ndlp->fc4_xpt_flags & SCSI_XPT_REGD)) {
1024 set_bit(NLP_DROPPED, &ndlp->nlp_flag);
1025 lpfc_nlp_put(ndlp);
1026 }
1027
1028 lpfc_printf_vlog(vport, KERN_WARNING, LOG_ELS,
1029 "0150 FLOGI Status:x%x/x%x "
1030 "xri x%x iotag x%x TMO:x%x refcnt %d\n",
1031 ulp_status, ulp_word4, cmdiocb->sli4_xritag,
1032 cmdiocb->iotag, tmo, kref_read(&ndlp->kref));
1033
1034 /* If this is not a loop open failure, bail out */
1035 if (!(ulp_status == IOSTAT_LOCAL_REJECT &&
1036 ((ulp_word4 & IOERR_PARAM_MASK) ==
1037 IOERR_LOOP_OPEN_FAILURE))) {
1038 /* Warn FLOGI status */
1039 lpfc_vlog_msg(vport, KERN_WARNING, LOG_ELS,
1040 "0100 FLOGI Status:x%x/x%x "
1041 "TMO:x%x\n",
1042 ulp_status, ulp_word4, tmo);
1043 goto flogifail;
1044 }
1045
1046 /* FLOGI failed, so there is no fabric */
1047 clear_bit(FC_FABRIC, &vport->fc_flag);
1048 clear_bit(FC_PUBLIC_LOOP, &vport->fc_flag);
1049 clear_bit(FC_PT2PT_NO_NVME, &vport->fc_flag);
1050
1051 /* If private loop, then allow max outstanding els to be
1052 * LPFC_MAX_DISC_THREADS (32). Scanning in the case of no
1053 * alpa map would take too long otherwise.
1054 */
1055 if (phba->alpa_map[0] == 0)
1056 vport->cfg_discovery_threads = LPFC_MAX_DISC_THREADS;
1057 if ((phba->sli_rev == LPFC_SLI_REV4) &&
1058 (!test_bit(FC_VFI_REGISTERED, &vport->fc_flag) ||
1059 (vport->fc_prevDID != vport->fc_myDID) ||
1060 phba->fc_topology_changed)) {
1061 if (test_bit(FC_VFI_REGISTERED, &vport->fc_flag)) {
1062 if (phba->fc_topology_changed) {
1063 lpfc_unregister_fcf_prep(phba);
1064 clear_bit(FC_VFI_REGISTERED,
1065 &vport->fc_flag);
1066 phba->fc_topology_changed = 0;
1067 } else {
1068 lpfc_sli4_unreg_all_rpis(vport);
1069 }
1070 }
1071
1072 /* Do not register VFI if the driver aborted FLOGI */
1073 if (!lpfc_error_lost_link(vport, ulp_status, ulp_word4))
1074 lpfc_issue_reg_vfi(vport);
1075
1076 goto out;
1077 }
1078 goto flogifail;
1079 }
1080 clear_bit(FC_VPORT_CVL_RCVD, &vport->fc_flag);
1081 clear_bit(FC_VPORT_LOGO_RCVD, &vport->fc_flag);
1082
1083 /*
1084 * The FLOGI succeeded. Sync the data for the CPU before
1085 * accessing it.
1086 */
1087 prsp = list_get_first(&pcmd->list, struct lpfc_dmabuf, list);
1088 if (!prsp)
1089 goto out;
1090 if (!lpfc_is_els_acc_rsp(prsp))
1091 goto out;
1092 sp = prsp->virt + sizeof(uint32_t);
1093
1094 /* FLOGI completes successfully */
1095 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
1096 "0101 FLOGI completes successfully, I/O tag:x%x "
1097 "xri x%x Data: x%x x%x x%x x%x x%x x%lx x%x %d\n",
1098 cmdiocb->iotag, cmdiocb->sli4_xritag,
1099 ulp_word4, sp->cmn.e_d_tov,
1100 sp->cmn.w2.r_a_tov, sp->cmn.edtovResolution,
1101 vport->port_state, vport->fc_flag,
1102 sp->cmn.priority_tagging, kref_read(&ndlp->kref));
1103
1104 /* reinitialize the VMID datastructure before returning */
1105 if (lpfc_is_vmid_enabled(phba)) {
1106 lpfc_reinit_vmid(vport);
1107 vport->vmid_flag = 0;
1108 }
1109 if (sp->cmn.priority_tagging)
1110 vport->vmid_flag |= (LPFC_VMID_ISSUE_QFPA |
1111 LPFC_VMID_TYPE_PRIO);
1112
1113 /*
1114 * Address a timing race with dev_loss. If dev_loss is active on
1115 * this FPort node, put the initial ref count back to stop premature
1116 * node release actions.
1117 */
1118 lpfc_check_nlp_post_devloss(vport, ndlp);
1119 if (vport->port_state == LPFC_FLOGI) {
1120 /*
1121 * If Common Service Parameters indicate Nport
1122 * we are point to point, if Fport we are Fabric.
1123 */
1124 if (sp->cmn.fPort)
1125 rc = lpfc_cmpl_els_flogi_fabric(vport, ndlp, sp,
1126 ulp_word4);
1127 else if (!test_bit(HBA_FCOE_MODE, &phba->hba_flag))
1128 rc = lpfc_cmpl_els_flogi_nport(vport, ndlp, sp);
1129 else {
1130 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
1131 "2831 FLOGI response with cleared Fabric "
1132 "bit fcf_index 0x%x "
1133 "Switch Name %02x%02x%02x%02x%02x%02x%02x%02x "
1134 "Fabric Name "
1135 "%02x%02x%02x%02x%02x%02x%02x%02x\n",
1136 phba->fcf.current_rec.fcf_indx,
1137 phba->fcf.current_rec.switch_name[0],
1138 phba->fcf.current_rec.switch_name[1],
1139 phba->fcf.current_rec.switch_name[2],
1140 phba->fcf.current_rec.switch_name[3],
1141 phba->fcf.current_rec.switch_name[4],
1142 phba->fcf.current_rec.switch_name[5],
1143 phba->fcf.current_rec.switch_name[6],
1144 phba->fcf.current_rec.switch_name[7],
1145 phba->fcf.current_rec.fabric_name[0],
1146 phba->fcf.current_rec.fabric_name[1],
1147 phba->fcf.current_rec.fabric_name[2],
1148 phba->fcf.current_rec.fabric_name[3],
1149 phba->fcf.current_rec.fabric_name[4],
1150 phba->fcf.current_rec.fabric_name[5],
1151 phba->fcf.current_rec.fabric_name[6],
1152 phba->fcf.current_rec.fabric_name[7]);
1153
1154 lpfc_nlp_put(ndlp);
1155 spin_lock_irq(&phba->hbalock);
1156 phba->fcf.fcf_flag &= ~FCF_DISCOVERY;
1157 spin_unlock_irq(&phba->hbalock);
1158 clear_bit(FCF_RR_INPROG, &phba->hba_flag);
1159 clear_bit(HBA_DEVLOSS_TMO, &phba->hba_flag);
1160 phba->fcf.fcf_redisc_attempted = 0; /* reset */
1161 goto out;
1162 }
1163 if (!rc) {
1164 /* Mark the FCF discovery process done */
1165 if (test_bit(HBA_FIP_SUPPORT, &phba->hba_flag))
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 spin_unlock_irq(&phba->hbalock);
1174 clear_bit(FCF_RR_INPROG, &phba->hba_flag);
1175 clear_bit(HBA_DEVLOSS_TMO, &phba->hba_flag);
1176 phba->fcf.fcf_redisc_attempted = 0; /* reset */
1177 goto out;
1178 }
1179 } else if (vport->port_state > LPFC_FLOGI &&
1180 test_bit(FC_PT2PT, &vport->fc_flag)) {
1181 /*
1182 * In a p2p topology, it is possible that discovery has
1183 * already progressed, and this completion can be ignored.
1184 * Recheck the indicated topology.
1185 */
1186 if (!sp->cmn.fPort)
1187 goto out;
1188 }
1189
1190flogifail:
1191 spin_lock_irq(&phba->hbalock);
1192 phba->fcf.fcf_flag &= ~FCF_DISCOVERY;
1193 spin_unlock_irq(&phba->hbalock);
1194
1195 if (!lpfc_error_lost_link(vport, ulp_status, ulp_word4)) {
1196 /* FLOGI failed, so just use loop map to make discovery list */
1197 lpfc_disc_list_loopmap(vport);
1198
1199 /* Start discovery */
1200 lpfc_disc_start(vport);
1201 } else if (((ulp_status != IOSTAT_LOCAL_REJECT) ||
1202 (((ulp_word4 & IOERR_PARAM_MASK) !=
1203 IOERR_SLI_ABORTED) &&
1204 ((ulp_word4 & IOERR_PARAM_MASK) !=
1205 IOERR_SLI_DOWN))) &&
1206 (phba->link_state != LPFC_CLEAR_LA)) {
1207 /* If FLOGI failed enable link interrupt. */
1208 lpfc_issue_clear_la(phba, vport);
1209 }
1210out:
1211 if (!flogi_in_retry)
1212 clear_bit(HBA_FLOGI_OUTSTANDING, &phba->hba_flag);
1213
1214 lpfc_els_free_iocb(phba, cmdiocb);
1215 lpfc_nlp_put(ndlp);
1216}
1217
1218/**
1219 * lpfc_cmpl_els_link_down - Completion callback function for ELS command
1220 * aborted during a link down
1221 * @phba: pointer to lpfc hba data structure.
1222 * @cmdiocb: pointer to lpfc command iocb data structure.
1223 * @rspiocb: pointer to lpfc response iocb data structure.
1224 *
1225 */
1226static void
1227lpfc_cmpl_els_link_down(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
1228 struct lpfc_iocbq *rspiocb)
1229{
1230 uint32_t *pcmd;
1231 uint32_t cmd;
1232 u32 ulp_status, ulp_word4;
1233
1234 pcmd = (uint32_t *)cmdiocb->cmd_dmabuf->virt;
1235 cmd = *pcmd;
1236
1237 ulp_status = get_job_ulpstatus(phba, rspiocb);
1238 ulp_word4 = get_job_word4(phba, rspiocb);
1239
1240 lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
1241 "6445 ELS completes after LINK_DOWN: "
1242 " Status %x/%x cmd x%x flg x%x iotag x%x\n",
1243 ulp_status, ulp_word4, cmd,
1244 cmdiocb->cmd_flag, cmdiocb->iotag);
1245
1246 if (cmdiocb->cmd_flag & LPFC_IO_FABRIC) {
1247 cmdiocb->cmd_flag &= ~LPFC_IO_FABRIC;
1248 atomic_dec(&phba->fabric_iocb_count);
1249 }
1250 lpfc_els_free_iocb(phba, cmdiocb);
1251}
1252
1253/**
1254 * lpfc_issue_els_flogi - Issue an flogi iocb command for a vport
1255 * @vport: pointer to a host virtual N_Port data structure.
1256 * @ndlp: pointer to a node-list data structure.
1257 * @retry: number of retries to the command IOCB.
1258 *
1259 * This routine issues a Fabric Login (FLOGI) Request ELS command
1260 * for a @vport. The initiator service parameters are put into the payload
1261 * of the FLOGI Request IOCB and the top-level callback function pointer
1262 * to lpfc_cmpl_els_flogi() routine is put to the IOCB completion callback
1263 * function field. The lpfc_issue_fabric_iocb routine is invoked to send
1264 * out FLOGI ELS command with one outstanding fabric IOCB at a time.
1265 *
1266 * Note that the ndlp reference count will be incremented by 1 for holding the
1267 * ndlp and the reference to ndlp will be stored into the ndlp field of
1268 * the IOCB for the completion callback function to the FLOGI ELS command.
1269 *
1270 * Return code
1271 * 0 - successfully issued flogi iocb for @vport
1272 * 1 - failed to issue flogi iocb for @vport
1273 **/
1274static int
1275lpfc_issue_els_flogi(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1276 uint8_t retry)
1277{
1278 struct lpfc_hba *phba = vport->phba;
1279 struct serv_parm *sp;
1280 union lpfc_wqe128 *wqe = NULL;
1281 IOCB_t *icmd = NULL;
1282 struct lpfc_iocbq *elsiocb;
1283 struct lpfc_iocbq defer_flogi_acc;
1284 u8 *pcmd, ct;
1285 uint16_t cmdsize;
1286 uint32_t tmo, did;
1287 int rc;
1288
1289 /* It's possible for lpfc to reissue a FLOGI on an ndlp that is marked
1290 * NLP_DROPPED. This happens when the FLOGI completed with the XB bit
1291 * set causing lpfc to reference the ndlp until the XRI_ABORTED CQE is
1292 * issued. The time window for the XRI_ABORTED CQE can be as much as
1293 * 2*2*RA_TOV allowing for ndlp reuse of this type when the link is
1294 * cycling quickly. When true, restore the initial reference and remove
1295 * the NLP_DROPPED flag as lpfc is retrying.
1296 */
1297 if (test_and_clear_bit(NLP_DROPPED, &ndlp->nlp_flag)) {
1298 if (!lpfc_nlp_get(ndlp))
1299 return 1;
1300 }
1301
1302 cmdsize = (sizeof(uint32_t) + sizeof(struct serv_parm));
1303 elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp,
1304 ndlp->nlp_DID, ELS_CMD_FLOGI);
1305
1306 if (!elsiocb) {
1307 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
1308 lpfc_printf_vlog(vport, KERN_WARNING, LOG_ELS | LOG_DISCOVERY,
1309 "4296 Unable to prepare FLOGI iocb\n");
1310 return 1;
1311 }
1312
1313 wqe = &elsiocb->wqe;
1314 pcmd = (uint8_t *)elsiocb->cmd_dmabuf->virt;
1315 icmd = &elsiocb->iocb;
1316
1317 /* For FLOGI request, remainder of payload is service parameters */
1318 *((uint32_t *) (pcmd)) = ELS_CMD_FLOGI;
1319 pcmd += sizeof(uint32_t);
1320 memcpy(pcmd, &vport->fc_sparam, sizeof(struct serv_parm));
1321 sp = (struct serv_parm *) pcmd;
1322
1323 /* Setup CSPs accordingly for Fabric */
1324 sp->cmn.e_d_tov = 0;
1325 sp->cmn.w2.r_a_tov = 0;
1326 sp->cmn.virtual_fabric_support = 0;
1327 sp->cls1.classValid = 0;
1328 if (sp->cmn.fcphLow < FC_PH3)
1329 sp->cmn.fcphLow = FC_PH3;
1330 if (sp->cmn.fcphHigh < FC_PH3)
1331 sp->cmn.fcphHigh = FC_PH3;
1332
1333 /* Determine if switch supports priority tagging */
1334 if (phba->cfg_vmid_priority_tagging) {
1335 sp->cmn.priority_tagging = 1;
1336 /* lpfc_vmid_host_uuid is combination of wwpn and wwnn */
1337 if (!memchr_inv(vport->lpfc_vmid_host_uuid, 0,
1338 sizeof(vport->lpfc_vmid_host_uuid))) {
1339 memcpy(vport->lpfc_vmid_host_uuid, phba->wwpn,
1340 sizeof(phba->wwpn));
1341 memcpy(&vport->lpfc_vmid_host_uuid[8], phba->wwnn,
1342 sizeof(phba->wwnn));
1343 }
1344 }
1345
1346 if (phba->sli_rev == LPFC_SLI_REV4) {
1347 if (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) ==
1348 LPFC_SLI_INTF_IF_TYPE_0) {
1349 /* FLOGI needs to be 3 for WQE FCFI */
1350 ct = SLI4_CT_FCFI;
1351 bf_set(wqe_ct, &wqe->els_req.wqe_com, ct);
1352
1353 /* Set the fcfi to the fcfi we registered with */
1354 bf_set(wqe_ctxt_tag, &wqe->els_req.wqe_com,
1355 phba->fcf.fcfi);
1356 }
1357
1358 /* Can't do SLI4 class2 without support sequence coalescing */
1359 sp->cls2.classValid = 0;
1360 sp->cls2.seqDelivery = 0;
1361
1362 /* Fill out Auxiliary Parameter Data */
1363 if (phba->pni) {
1364 sp->aux.flags =
1365 AUX_PARM_DATA_VALID | AUX_PARM_PNI_VALID;
1366 sp->aux.pni = cpu_to_be64(phba->pni);
1367 sp->aux.npiv_cnt = cpu_to_be16(phba->max_vpi - 1);
1368 }
1369 } else {
1370 /* Historical, setting sequential-delivery bit for SLI3 */
1371 sp->cls2.seqDelivery = (sp->cls2.classValid) ? 1 : 0;
1372 sp->cls3.seqDelivery = (sp->cls3.classValid) ? 1 : 0;
1373 if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) {
1374 sp->cmn.request_multiple_Nport = 1;
1375 /* For FLOGI, Let FLOGI rsp set the NPortID for VPI 0 */
1376 icmd->ulpCt_h = 1;
1377 icmd->ulpCt_l = 0;
1378 } else {
1379 sp->cmn.request_multiple_Nport = 0;
1380 }
1381
1382 if (phba->fc_topology != LPFC_TOPOLOGY_LOOP) {
1383 icmd->un.elsreq64.myID = 0;
1384 icmd->un.elsreq64.fl = 1;
1385 }
1386 }
1387
1388 tmo = phba->fc_ratov;
1389 phba->fc_ratov = LPFC_DISC_FLOGI_TMO;
1390 lpfc_set_disctmo(vport);
1391 phba->fc_ratov = tmo;
1392
1393 phba->fc_stat.elsXmitFLOGI++;
1394 elsiocb->cmd_cmpl = lpfc_cmpl_els_flogi;
1395
1396 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
1397 "Issue FLOGI: opt:x%x",
1398 phba->sli3_options, 0, 0);
1399
1400 elsiocb->ndlp = lpfc_nlp_get(ndlp);
1401 if (!elsiocb->ndlp)
1402 goto err_out;
1403
1404 /* Avoid race with FLOGI completion and hba_flags. */
1405 set_bit(HBA_FLOGI_ISSUED, &phba->hba_flag);
1406 set_bit(HBA_FLOGI_OUTSTANDING, &phba->hba_flag);
1407
1408 rc = lpfc_issue_fabric_iocb(phba, elsiocb);
1409 if (rc == IOCB_ERROR) {
1410 clear_bit(HBA_FLOGI_ISSUED, &phba->hba_flag);
1411 clear_bit(HBA_FLOGI_OUTSTANDING, &phba->hba_flag);
1412 lpfc_nlp_put(ndlp);
1413 goto err_out;
1414 }
1415
1416 /* Clear external loopback plug detected flag */
1417 phba->link_flag &= ~LS_EXTERNAL_LOOPBACK;
1418
1419 /* Check for a deferred FLOGI ACC condition */
1420 if (phba->defer_flogi_acc.flag) {
1421 /* lookup ndlp for received FLOGI */
1422 ndlp = lpfc_findnode_did(vport, 0);
1423 if (!ndlp)
1424 return 0;
1425
1426 did = vport->fc_myDID;
1427 vport->fc_myDID = Fabric_DID;
1428
1429 memset(&defer_flogi_acc, 0, sizeof(struct lpfc_iocbq));
1430
1431 if (phba->sli_rev == LPFC_SLI_REV4) {
1432 bf_set(wqe_ctxt_tag,
1433 &defer_flogi_acc.wqe.xmit_els_rsp.wqe_com,
1434 phba->defer_flogi_acc.rx_id);
1435 bf_set(wqe_rcvoxid,
1436 &defer_flogi_acc.wqe.xmit_els_rsp.wqe_com,
1437 phba->defer_flogi_acc.ox_id);
1438 } else {
1439 icmd = &defer_flogi_acc.iocb;
1440 icmd->ulpContext = phba->defer_flogi_acc.rx_id;
1441 icmd->unsli3.rcvsli3.ox_id =
1442 phba->defer_flogi_acc.ox_id;
1443 }
1444
1445 /* The LS_ACC completion needs to drop the initial reference.
1446 * This is a special case for Pt2Pt because both FLOGIs need
1447 * to complete and lpfc defers the LS_ACC when the remote
1448 * FLOGI arrives before the driver's FLOGI.
1449 */
1450 set_bit(NLP_FLOGI_DFR_ACC, &ndlp->nlp_flag);
1451
1452 /* Send deferred FLOGI ACC */
1453 lpfc_els_rsp_acc(vport, ELS_CMD_FLOGI, &defer_flogi_acc,
1454 ndlp, NULL);
1455
1456 phba->defer_flogi_acc.flag = false;
1457
1458 /* Decrement the held ndlp that was incremented when the
1459 * deferred flogi acc flag was set.
1460 */
1461 if (phba->defer_flogi_acc.ndlp) {
1462 lpfc_nlp_put(phba->defer_flogi_acc.ndlp);
1463 phba->defer_flogi_acc.ndlp = NULL;
1464 }
1465
1466 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
1467 "3354 Xmit deferred FLOGI ACC: rx_id: x%x,"
1468 " ox_id: x%x, ndlp x%px hba_flag x%lx\n",
1469 phba->defer_flogi_acc.rx_id,
1470 phba->defer_flogi_acc.ox_id,
1471 phba->defer_flogi_acc.ndlp,
1472 phba->hba_flag);
1473
1474 vport->fc_myDID = did;
1475 }
1476
1477 return 0;
1478
1479 err_out:
1480 lpfc_els_free_iocb(phba, elsiocb);
1481 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
1482 lpfc_printf_vlog(vport, KERN_WARNING, LOG_ELS | LOG_DISCOVERY,
1483 "4297 Issue FLOGI: Cannot send IOCB\n");
1484 return 1;
1485}
1486
1487/**
1488 * lpfc_els_abort_flogi - Abort all outstanding flogi iocbs
1489 * @phba: pointer to lpfc hba data structure.
1490 *
1491 * This routine aborts all the outstanding Fabric Login (FLOGI) IOCBs
1492 * with a @phba. This routine walks all the outstanding IOCBs on the txcmplq
1493 * list and issues an abort IOCB commond on each outstanding IOCB that
1494 * contains a active Fabric_DID ndlp. Note that this function is to issue
1495 * the abort IOCB command on all the outstanding IOCBs, thus when this
1496 * function returns, it does not guarantee all the IOCBs are actually aborted.
1497 *
1498 * Return code
1499 * 0 - Successfully issued abort iocb on all outstanding flogis (Always 0)
1500 **/
1501int
1502lpfc_els_abort_flogi(struct lpfc_hba *phba)
1503{
1504 struct lpfc_sli_ring *pring;
1505 struct lpfc_iocbq *iocb, *next_iocb;
1506 struct lpfc_nodelist *ndlp;
1507 u32 ulp_command;
1508
1509 /* Abort outstanding I/O on NPort <nlp_DID> */
1510 lpfc_printf_log(phba, KERN_INFO, LOG_DISCOVERY,
1511 "0201 Abort outstanding I/O on NPort x%x\n",
1512 Fabric_DID);
1513
1514 pring = lpfc_phba_elsring(phba);
1515 if (unlikely(!pring))
1516 return -EIO;
1517
1518 /*
1519 * Check the txcmplq for an iocb that matches the nport the driver is
1520 * searching for.
1521 */
1522 spin_lock_irq(&phba->hbalock);
1523 list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq, list) {
1524 ulp_command = get_job_cmnd(phba, iocb);
1525 if (ulp_command == CMD_ELS_REQUEST64_CR) {
1526 ndlp = iocb->ndlp;
1527 if (ndlp && ndlp->nlp_DID == Fabric_DID) {
1528 if (test_bit(FC_PT2PT, &phba->pport->fc_flag) &&
1529 !test_bit(FC_PT2PT_PLOGI,
1530 &phba->pport->fc_flag))
1531 iocb->fabric_cmd_cmpl =
1532 lpfc_ignore_els_cmpl;
1533 lpfc_sli_issue_abort_iotag(phba, pring, iocb,
1534 NULL);
1535 }
1536 }
1537 }
1538 /* Make sure HBA is alive */
1539 lpfc_issue_hb_tmo(phba);
1540
1541 spin_unlock_irq(&phba->hbalock);
1542
1543 return 0;
1544}
1545
1546/**
1547 * lpfc_initial_flogi - Issue an initial fabric login for a vport
1548 * @vport: pointer to a host virtual N_Port data structure.
1549 *
1550 * This routine issues an initial Fabric Login (FLOGI) for the @vport
1551 * specified. It first searches the ndlp with the Fabric_DID (0xfffffe) from
1552 * the @vport's ndlp list. If no such ndlp found, it will create an ndlp and
1553 * put it into the @vport's ndlp list. If an inactive ndlp found on the list,
1554 * it will just be enabled and made active. The lpfc_issue_els_flogi() routine
1555 * is then invoked with the @vport and the ndlp to perform the FLOGI for the
1556 * @vport.
1557 *
1558 * Return code
1559 * 0 - failed to issue initial flogi for @vport
1560 * 1 - successfully issued initial flogi for @vport
1561 **/
1562int
1563lpfc_initial_flogi(struct lpfc_vport *vport)
1564{
1565 struct lpfc_nodelist *ndlp;
1566
1567 vport->port_state = LPFC_FLOGI;
1568 lpfc_set_disctmo(vport);
1569
1570 /* First look for the Fabric ndlp */
1571 ndlp = lpfc_findnode_did(vport, Fabric_DID);
1572 if (!ndlp) {
1573 /* Cannot find existing Fabric ndlp, so allocate a new one */
1574 ndlp = lpfc_nlp_init(vport, Fabric_DID);
1575 if (!ndlp)
1576 return 0;
1577 /* Set the node type */
1578 ndlp->nlp_type |= NLP_FABRIC;
1579
1580 /* Put ndlp onto node list */
1581 lpfc_enqueue_node(vport, ndlp);
1582 }
1583
1584 /* Reset the Fabric flag, topology change may have happened */
1585 clear_bit(FC_FABRIC, &vport->fc_flag);
1586 if (lpfc_issue_els_flogi(vport, ndlp, 0)) {
1587 /* A node reference should be retained while registered with a
1588 * transport or dev-loss-evt work is pending.
1589 * Otherwise, decrement node reference to trigger release.
1590 */
1591 if (!(ndlp->fc4_xpt_flags & (SCSI_XPT_REGD | NVME_XPT_REGD)) &&
1592 !test_bit(NLP_IN_DEV_LOSS, &ndlp->nlp_flag))
1593 lpfc_nlp_put(ndlp);
1594 return 0;
1595 }
1596 return 1;
1597}
1598
1599/**
1600 * lpfc_initial_fdisc - Issue an initial fabric discovery for a vport
1601 * @vport: pointer to a host virtual N_Port data structure.
1602 *
1603 * This routine issues an initial Fabric Discover (FDISC) for the @vport
1604 * specified. It first searches the ndlp with the Fabric_DID (0xfffffe) from
1605 * the @vport's ndlp list. If no such ndlp found, it will create an ndlp and
1606 * put it into the @vport's ndlp list. If an inactive ndlp found on the list,
1607 * it will just be enabled and made active. The lpfc_issue_els_fdisc() routine
1608 * is then invoked with the @vport and the ndlp to perform the FDISC for the
1609 * @vport.
1610 *
1611 * Return code
1612 * 0 - failed to issue initial fdisc for @vport
1613 * 1 - successfully issued initial fdisc for @vport
1614 **/
1615int
1616lpfc_initial_fdisc(struct lpfc_vport *vport)
1617{
1618 struct lpfc_nodelist *ndlp;
1619
1620 /* First look for the Fabric ndlp */
1621 ndlp = lpfc_findnode_did(vport, Fabric_DID);
1622 if (!ndlp) {
1623 /* Cannot find existing Fabric ndlp, so allocate a new one */
1624 ndlp = lpfc_nlp_init(vport, Fabric_DID);
1625 if (!ndlp)
1626 return 0;
1627
1628 /* NPIV is only supported in Fabrics. */
1629 ndlp->nlp_type |= NLP_FABRIC;
1630
1631 /* Put ndlp onto node list */
1632 lpfc_enqueue_node(vport, ndlp);
1633 }
1634
1635 if (lpfc_issue_els_fdisc(vport, ndlp, 0)) {
1636 /* A node reference should be retained while registered with a
1637 * transport or dev-loss-evt work is pending.
1638 * Otherwise, decrement node reference to trigger release.
1639 */
1640 if (!(ndlp->fc4_xpt_flags & (SCSI_XPT_REGD | NVME_XPT_REGD)) &&
1641 !test_bit(NLP_IN_DEV_LOSS, &ndlp->nlp_flag))
1642 lpfc_nlp_put(ndlp);
1643 return 0;
1644 }
1645 return 1;
1646}
1647
1648/**
1649 * lpfc_more_plogi - Check and issue remaining plogis for a vport
1650 * @vport: pointer to a host virtual N_Port data structure.
1651 *
1652 * This routine checks whether there are more remaining Port Logins
1653 * (PLOGI) to be issued for the @vport. If so, it will invoke the routine
1654 * lpfc_els_disc_plogi() to go through the Node Port Recovery (NPR) nodes
1655 * to issue ELS PLOGIs up to the configured discover threads with the
1656 * @vport (@vport->cfg_discovery_threads). The function also decrement
1657 * the @vport's num_disc_node by 1 if it is not already 0.
1658 **/
1659void
1660lpfc_more_plogi(struct lpfc_vport *vport)
1661{
1662 if (vport->num_disc_nodes)
1663 vport->num_disc_nodes--;
1664
1665 /* Continue discovery with <num_disc_nodes> PLOGIs to go */
1666 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
1667 "0232 Continue discovery with %d PLOGIs to go "
1668 "Data: x%x x%lx x%x\n",
1669 vport->num_disc_nodes,
1670 atomic_read(&vport->fc_plogi_cnt),
1671 vport->fc_flag, vport->port_state);
1672 /* Check to see if there are more PLOGIs to be sent */
1673 if (test_bit(FC_NLP_MORE, &vport->fc_flag))
1674 /* go thru NPR nodes and issue any remaining ELS PLOGIs */
1675 lpfc_els_disc_plogi(vport);
1676
1677 return;
1678}
1679
1680/**
1681 * lpfc_plogi_confirm_nport - Confirm plogi wwpn matches stored ndlp
1682 * @phba: pointer to lpfc hba data structure.
1683 * @prsp: pointer to response IOCB payload.
1684 * @ndlp: pointer to a node-list data structure.
1685 *
1686 * This routine checks and indicates whether the WWPN of an N_Port, retrieved
1687 * from a PLOGI, matches the WWPN that is stored in the @ndlp for that N_POrt.
1688 * The following cases are considered N_Port confirmed:
1689 * 1) The N_Port is a Fabric ndlp; 2) The @ndlp is on vport list and matches
1690 * the WWPN of the N_Port logged into; 3) The @ndlp is not on vport list but
1691 * it does not have WWPN assigned either. If the WWPN is confirmed, the
1692 * pointer to the @ndlp will be returned. If the WWPN is not confirmed:
1693 * 1) if there is a node on vport list other than the @ndlp with the same
1694 * WWPN of the N_Port PLOGI logged into, the lpfc_unreg_rpi() will be invoked
1695 * on that node to release the RPI associated with the node; 2) if there is
1696 * no node found on vport list with the same WWPN of the N_Port PLOGI logged
1697 * into, a new node shall be allocated (or activated). In either case, the
1698 * parameters of the @ndlp shall be copied to the new_ndlp, the @ndlp shall
1699 * be released and the new_ndlp shall be put on to the vport node list and
1700 * its pointer returned as the confirmed node.
1701 *
1702 * Note that before the @ndlp got "released", the keepDID from not-matching
1703 * or inactive "new_ndlp" on the vport node list is assigned to the nlp_DID
1704 * of the @ndlp. This is because the release of @ndlp is actually to put it
1705 * into an inactive state on the vport node list and the vport node list
1706 * management algorithm does not allow two node with a same DID.
1707 *
1708 * Return code
1709 * pointer to the PLOGI N_Port @ndlp
1710 **/
1711static struct lpfc_nodelist *
1712lpfc_plogi_confirm_nport(struct lpfc_hba *phba, uint32_t *prsp,
1713 struct lpfc_nodelist *ndlp)
1714{
1715 struct lpfc_vport *vport = ndlp->vport;
1716 struct lpfc_nodelist *new_ndlp;
1717 struct serv_parm *sp;
1718 uint8_t name[sizeof(struct lpfc_name)];
1719 uint32_t keepDID = 0;
1720 int rc;
1721 unsigned long keep_nlp_flag = 0, keep_new_nlp_flag = 0;
1722 uint16_t keep_nlp_state;
1723 u32 keep_nlp_fc4_type = 0;
1724 struct lpfc_nvme_rport *keep_nrport = NULL;
1725 unsigned long *active_rrqs_xri_bitmap = NULL;
1726
1727 sp = (struct serv_parm *) ((uint8_t *) prsp + sizeof(uint32_t));
1728 memset(name, 0, sizeof(struct lpfc_name));
1729
1730 /* Now we find out if the NPort we are logging into, matches the WWPN
1731 * we have for that ndlp. If not, we have some work to do.
1732 */
1733 new_ndlp = lpfc_findnode_wwpn(vport, &sp->portName);
1734
1735 /* return immediately if the WWPN matches ndlp */
1736 if (new_ndlp == ndlp)
1737 return ndlp;
1738
1739 if (phba->sli_rev == LPFC_SLI_REV4) {
1740 active_rrqs_xri_bitmap = mempool_alloc(phba->active_rrq_pool,
1741 GFP_KERNEL);
1742 if (active_rrqs_xri_bitmap)
1743 memset(active_rrqs_xri_bitmap, 0,
1744 phba->cfg_rrq_xri_bitmap_sz);
1745 }
1746
1747 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS | LOG_NODE,
1748 "3178 PLOGI confirm: ndlp x%x x%lx x%x: "
1749 "new_ndlp x%x x%lx x%x\n",
1750 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_fc4_type,
1751 (new_ndlp ? new_ndlp->nlp_DID : 0),
1752 (new_ndlp ? new_ndlp->nlp_flag : 0),
1753 (new_ndlp ? new_ndlp->nlp_fc4_type : 0));
1754
1755 if (!new_ndlp) {
1756 rc = memcmp(&ndlp->nlp_portname, name,
1757 sizeof(struct lpfc_name));
1758 if (!rc) {
1759 if (active_rrqs_xri_bitmap)
1760 mempool_free(active_rrqs_xri_bitmap,
1761 phba->active_rrq_pool);
1762 return ndlp;
1763 }
1764 new_ndlp = lpfc_nlp_init(vport, ndlp->nlp_DID);
1765 if (!new_ndlp) {
1766 if (active_rrqs_xri_bitmap)
1767 mempool_free(active_rrqs_xri_bitmap,
1768 phba->active_rrq_pool);
1769 return ndlp;
1770 }
1771 } else {
1772 if (phba->sli_rev == LPFC_SLI_REV4 &&
1773 active_rrqs_xri_bitmap)
1774 memcpy(active_rrqs_xri_bitmap,
1775 new_ndlp->active_rrqs_xri_bitmap,
1776 phba->cfg_rrq_xri_bitmap_sz);
1777
1778 /*
1779 * Unregister from backend if not done yet. Could have been
1780 * skipped due to ADISC
1781 */
1782 lpfc_nlp_unreg_node(vport, new_ndlp);
1783 }
1784
1785 keepDID = new_ndlp->nlp_DID;
1786
1787 /* At this point in this routine, we know new_ndlp will be
1788 * returned. however, any previous GID_FTs that were done
1789 * would have updated nlp_fc4_type in ndlp, so we must ensure
1790 * new_ndlp has the right value.
1791 */
1792 if (test_bit(FC_FABRIC, &vport->fc_flag)) {
1793 keep_nlp_fc4_type = new_ndlp->nlp_fc4_type;
1794 new_ndlp->nlp_fc4_type = ndlp->nlp_fc4_type;
1795 }
1796
1797 lpfc_unreg_rpi(vport, new_ndlp);
1798 new_ndlp->nlp_DID = ndlp->nlp_DID;
1799 new_ndlp->nlp_prev_state = ndlp->nlp_prev_state;
1800 if (phba->sli_rev == LPFC_SLI_REV4)
1801 memcpy(new_ndlp->active_rrqs_xri_bitmap,
1802 ndlp->active_rrqs_xri_bitmap,
1803 phba->cfg_rrq_xri_bitmap_sz);
1804
1805 /* Lock both ndlps */
1806 spin_lock_irq(&ndlp->lock);
1807 spin_lock_irq(&new_ndlp->lock);
1808 keep_new_nlp_flag = new_ndlp->nlp_flag;
1809 keep_nlp_flag = ndlp->nlp_flag;
1810 new_ndlp->nlp_flag = ndlp->nlp_flag;
1811
1812 /* if new_ndlp had NLP_UNREG_INP set, keep it */
1813 if (test_bit(NLP_UNREG_INP, &keep_new_nlp_flag))
1814 set_bit(NLP_UNREG_INP, &new_ndlp->nlp_flag);
1815 else
1816 clear_bit(NLP_UNREG_INP, &new_ndlp->nlp_flag);
1817
1818 /* if new_ndlp had NLP_RPI_REGISTERED set, keep it */
1819 if (test_bit(NLP_RPI_REGISTERED, &keep_new_nlp_flag))
1820 set_bit(NLP_RPI_REGISTERED, &new_ndlp->nlp_flag);
1821 else
1822 clear_bit(NLP_RPI_REGISTERED, &new_ndlp->nlp_flag);
1823
1824 /*
1825 * Retain the DROPPED flag. This will take care of the init
1826 * refcount when affecting the state change
1827 */
1828 if (test_bit(NLP_DROPPED, &keep_new_nlp_flag))
1829 set_bit(NLP_DROPPED, &new_ndlp->nlp_flag);
1830 else
1831 clear_bit(NLP_DROPPED, &new_ndlp->nlp_flag);
1832
1833 ndlp->nlp_flag = keep_new_nlp_flag;
1834
1835 /* if ndlp had NLP_UNREG_INP set, keep it */
1836 if (test_bit(NLP_UNREG_INP, &keep_nlp_flag))
1837 set_bit(NLP_UNREG_INP, &ndlp->nlp_flag);
1838 else
1839 clear_bit(NLP_UNREG_INP, &ndlp->nlp_flag);
1840
1841 /* if ndlp had NLP_RPI_REGISTERED set, keep it */
1842 if (test_bit(NLP_RPI_REGISTERED, &keep_nlp_flag))
1843 set_bit(NLP_RPI_REGISTERED, &ndlp->nlp_flag);
1844 else
1845 clear_bit(NLP_RPI_REGISTERED, &ndlp->nlp_flag);
1846
1847 /*
1848 * Retain the DROPPED flag. This will take care of the init
1849 * refcount when affecting the state change
1850 */
1851 if (test_bit(NLP_DROPPED, &keep_nlp_flag))
1852 set_bit(NLP_DROPPED, &ndlp->nlp_flag);
1853 else
1854 clear_bit(NLP_DROPPED, &ndlp->nlp_flag);
1855
1856 spin_unlock_irq(&new_ndlp->lock);
1857 spin_unlock_irq(&ndlp->lock);
1858
1859 /* Set nlp_states accordingly */
1860 keep_nlp_state = new_ndlp->nlp_state;
1861 lpfc_nlp_set_state(vport, new_ndlp, ndlp->nlp_state);
1862
1863 /* interchange the nvme remoteport structs */
1864 keep_nrport = new_ndlp->nrport;
1865 new_ndlp->nrport = ndlp->nrport;
1866
1867 /* Move this back to NPR state */
1868 if (memcmp(&ndlp->nlp_portname, name, sizeof(struct lpfc_name)) == 0) {
1869 /* The ndlp doesn't have a portname yet, but does have an
1870 * NPort ID. The new_ndlp portname matches the Rport's
1871 * portname. Reinstantiate the new_ndlp and reset the ndlp.
1872 */
1873 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
1874 "3179 PLOGI confirm NEW: %x %x\n",
1875 new_ndlp->nlp_DID, keepDID);
1876
1877 /* Two ndlps cannot have the same did on the nodelist.
1878 * The KeepDID and keep_nlp_fc4_type need to be swapped
1879 * because ndlp is inflight with no WWPN.
1880 */
1881 ndlp->nlp_DID = keepDID;
1882 ndlp->nlp_fc4_type = keep_nlp_fc4_type;
1883 lpfc_nlp_set_state(vport, ndlp, keep_nlp_state);
1884 if (phba->sli_rev == LPFC_SLI_REV4 &&
1885 active_rrqs_xri_bitmap)
1886 memcpy(ndlp->active_rrqs_xri_bitmap,
1887 active_rrqs_xri_bitmap,
1888 phba->cfg_rrq_xri_bitmap_sz);
1889
1890 } else {
1891 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
1892 "3180 PLOGI confirm SWAP: %x %x\n",
1893 new_ndlp->nlp_DID, keepDID);
1894
1895 lpfc_unreg_rpi(vport, ndlp);
1896
1897 /* The ndlp and new_ndlp both have WWPNs but are swapping
1898 * NPort Ids and attributes.
1899 */
1900 ndlp->nlp_DID = keepDID;
1901 ndlp->nlp_fc4_type = keep_nlp_fc4_type;
1902
1903 if (phba->sli_rev == LPFC_SLI_REV4 &&
1904 active_rrqs_xri_bitmap)
1905 memcpy(ndlp->active_rrqs_xri_bitmap,
1906 active_rrqs_xri_bitmap,
1907 phba->cfg_rrq_xri_bitmap_sz);
1908
1909 /* Since we are switching over to the new_ndlp,
1910 * reset the old ndlp state
1911 */
1912 if ((ndlp->nlp_state == NLP_STE_UNMAPPED_NODE) ||
1913 (ndlp->nlp_state == NLP_STE_MAPPED_NODE))
1914 keep_nlp_state = NLP_STE_NPR_NODE;
1915 lpfc_nlp_set_state(vport, ndlp, keep_nlp_state);
1916 ndlp->nrport = keep_nrport;
1917 }
1918
1919 /*
1920 * If ndlp is not associated with any rport we can drop it here else
1921 * let dev_loss_tmo_callbk trigger DEVICE_RM event
1922 */
1923 if (!ndlp->rport && (ndlp->nlp_state == NLP_STE_NPR_NODE))
1924 lpfc_disc_state_machine(vport, ndlp, NULL, NLP_EVT_DEVICE_RM);
1925
1926 if (phba->sli_rev == LPFC_SLI_REV4 &&
1927 active_rrqs_xri_bitmap)
1928 mempool_free(active_rrqs_xri_bitmap,
1929 phba->active_rrq_pool);
1930
1931 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS | LOG_NODE,
1932 "3173 PLOGI confirm exit: new_ndlp x%x x%lx x%x\n",
1933 new_ndlp->nlp_DID, new_ndlp->nlp_flag,
1934 new_ndlp->nlp_fc4_type);
1935
1936 return new_ndlp;
1937}
1938
1939/**
1940 * lpfc_end_rscn - Check and handle more rscn for a vport
1941 * @vport: pointer to a host virtual N_Port data structure.
1942 *
1943 * This routine checks whether more Registration State Change
1944 * Notifications (RSCNs) came in while the discovery state machine was in
1945 * the FC_RSCN_MODE. If so, the lpfc_els_handle_rscn() routine will be
1946 * invoked to handle the additional RSCNs for the @vport. Otherwise, the
1947 * FC_RSCN_MODE bit will be cleared with the @vport to mark as the end of
1948 * handling the RSCNs.
1949 **/
1950void
1951lpfc_end_rscn(struct lpfc_vport *vport)
1952{
1953
1954 if (test_bit(FC_RSCN_MODE, &vport->fc_flag)) {
1955 /*
1956 * Check to see if more RSCNs came in while we were
1957 * processing this one.
1958 */
1959 if (vport->fc_rscn_id_cnt ||
1960 test_bit(FC_RSCN_DISCOVERY, &vport->fc_flag))
1961 lpfc_els_handle_rscn(vport);
1962 else
1963 clear_bit(FC_RSCN_MODE, &vport->fc_flag);
1964 }
1965}
1966
1967/**
1968 * lpfc_cmpl_els_rrq - Completion handled for els RRQs.
1969 * @phba: pointer to lpfc hba data structure.
1970 * @cmdiocb: pointer to lpfc command iocb data structure.
1971 * @rspiocb: pointer to lpfc response iocb data structure.
1972 *
1973 * This routine will call the clear rrq function to free the rrq and
1974 * clear the xri's bit in the ndlp's xri_bitmap. If the ndlp does not
1975 * exist then the clear_rrq is still called because the rrq needs to
1976 * be freed.
1977 **/
1978
1979static void
1980lpfc_cmpl_els_rrq(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
1981 struct lpfc_iocbq *rspiocb)
1982{
1983 struct lpfc_vport *vport = cmdiocb->vport;
1984 struct lpfc_nodelist *ndlp = cmdiocb->ndlp;
1985 struct lpfc_node_rrq *rrq;
1986 u32 ulp_status = get_job_ulpstatus(phba, rspiocb);
1987 u32 ulp_word4 = get_job_word4(phba, rspiocb);
1988
1989 /* we pass cmdiocb to state machine which needs rspiocb as well */
1990 rrq = cmdiocb->context_un.rrq;
1991 cmdiocb->rsp_iocb = rspiocb;
1992
1993 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
1994 "RRQ cmpl: status:x%x/x%x did:x%x",
1995 ulp_status, ulp_word4,
1996 get_job_els_rsp64_did(phba, cmdiocb));
1997
1998
1999 /* rrq completes to NPort <nlp_DID> */
2000 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
2001 "2880 RRQ completes to DID x%x "
2002 "Data: x%x x%x x%x x%x x%x\n",
2003 ndlp->nlp_DID, ulp_status, ulp_word4,
2004 get_wqe_tmo(cmdiocb), rrq->xritag, rrq->rxid);
2005
2006 if (ulp_status) {
2007 /* Check for retry */
2008 /* Warn RRQ status Don't print the vport to vport rjts */
2009 if (ulp_status != IOSTAT_LS_RJT ||
2010 (((ulp_word4) >> 16 != LSRJT_INVALID_CMD) &&
2011 ((ulp_word4) >> 16 != LSRJT_UNABLE_TPC)) ||
2012 (phba)->pport->cfg_log_verbose & LOG_ELS)
2013 lpfc_vlog_msg(vport, KERN_WARNING, LOG_ELS,
2014 "2881 RRQ DID:%06X Status:"
2015 "x%x/x%x\n",
2016 ndlp->nlp_DID, ulp_status,
2017 ulp_word4);
2018 }
2019
2020 lpfc_clr_rrq_active(phba, rrq->xritag, rrq);
2021 lpfc_els_free_iocb(phba, cmdiocb);
2022 lpfc_nlp_put(ndlp);
2023 return;
2024}
2025
2026/**
2027 * lpfc_check_encryption - Reports an ndlp's encryption information
2028 * @phba: pointer to lpfc hba data structure.
2029 * @ndlp: pointer to a node-list data structure.
2030 * @cmdiocb: pointer to lpfc command iocbq data structure.
2031 * @rspiocb: pointer to lpfc response iocbq data structure.
2032 *
2033 * This routine is called in the completion callback function for issuing
2034 * or receiving a Port Login (PLOGI) command. In a PLOGI completion, if FEDIF
2035 * is supported, encryption information will be provided in completion status
2036 * data. If @phba supports FEDIF, a log message containing encryption
2037 * information will be logged. Encryption status is also saved for encryption
2038 * reporting with upper layer through the rport encryption attribute.
2039 **/
2040static void
2041lpfc_check_encryption(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp,
2042 struct lpfc_iocbq *cmdiocb, struct lpfc_iocbq *rspiocb)
2043{
2044 struct lpfc_vport *vport = cmdiocb->vport;
2045 u32 did = ndlp->nlp_DID;
2046 struct lpfc_enc_info *nlp_enc_info = &ndlp->nlp_enc_info;
2047 char enc_status[FC_RPORT_ENCRYPTION_STATUS_MAX_LEN] = {0};
2048 char enc_level[8] = "N/A";
2049 u8 encryption;
2050
2051 if (phba->sli4_hba.encryption_support &&
2052 ((did & Fabric_DID_MASK) != Fabric_DID_MASK)) {
2053 encryption = bf_get(lpfc_wcqe_c_enc,
2054 &rspiocb->wcqe_cmpl);
2055 nlp_enc_info->status = encryption;
2056
2057 strscpy(enc_status, encryption ? "Encrypted" : "Unencrypted",
2058 sizeof(enc_status));
2059
2060 if (encryption) {
2061 nlp_enc_info->level = bf_get(lpfc_wcqe_c_enc_lvl,
2062 &rspiocb->wcqe_cmpl);
2063 strscpy(enc_level, nlp_enc_info->level ? "CNSA2.0" :
2064 "CNSA1.0",
2065 sizeof(enc_level));
2066 }
2067
2068 lpfc_printf_vlog(vport, KERN_INFO, LOG_ENCRYPTION,
2069 "0924 DID:x%06x %s Session "
2070 "Established, Encryption Level:%s "
2071 "rpi:x%x\n",
2072 ndlp->nlp_DID, enc_status, enc_level,
2073 ndlp->nlp_rpi);
2074 }
2075}
2076
2077/**
2078 * lpfc_cmpl_els_plogi - Completion callback function for plogi
2079 * @phba: pointer to lpfc hba data structure.
2080 * @cmdiocb: pointer to lpfc command iocb data structure.
2081 * @rspiocb: pointer to lpfc response iocb data structure.
2082 *
2083 * This routine is the completion callback function for issuing the Port
2084 * Login (PLOGI) command. For PLOGI completion, there must be an active
2085 * ndlp on the vport node list that matches the remote node ID from the
2086 * PLOGI response IOCB. If such ndlp does not exist, the PLOGI is simply
2087 * ignored and command IOCB released. The PLOGI response IOCB status is
2088 * checked for error conditions. If there is error status reported, PLOGI
2089 * retry shall be attempted by invoking the lpfc_els_retry() routine.
2090 * Otherwise, the lpfc_plogi_confirm_nport() routine shall be invoked on
2091 * the ndlp and the NLP_EVT_CMPL_PLOGI state to the Discover State Machine
2092 * (DSM) is set for this PLOGI completion. Finally, it checks whether
2093 * there are additional N_Port nodes with the vport that need to perform
2094 * PLOGI. If so, the lpfc_more_plogi() routine is invoked to issue addition
2095 * PLOGIs.
2096 **/
2097static void
2098lpfc_cmpl_els_plogi(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
2099 struct lpfc_iocbq *rspiocb)
2100{
2101 struct lpfc_vport *vport = cmdiocb->vport;
2102 IOCB_t *irsp;
2103 struct lpfc_nodelist *ndlp, *free_ndlp;
2104 struct lpfc_dmabuf *prsp;
2105 bool disc;
2106 struct serv_parm *sp = NULL;
2107 u32 ulp_status, ulp_word4, did, iotag;
2108 bool release_node = false;
2109
2110 /* we pass cmdiocb to state machine which needs rspiocb as well */
2111 cmdiocb->rsp_iocb = rspiocb;
2112
2113 ulp_status = get_job_ulpstatus(phba, rspiocb);
2114 ulp_word4 = get_job_word4(phba, rspiocb);
2115 did = get_job_els_rsp64_did(phba, cmdiocb);
2116
2117 if (phba->sli_rev == LPFC_SLI_REV4) {
2118 iotag = get_wqe_reqtag(cmdiocb);
2119 } else {
2120 irsp = &rspiocb->iocb;
2121 iotag = irsp->ulpIoTag;
2122 }
2123
2124 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
2125 "PLOGI cmpl: status:x%x/x%x did:x%x",
2126 ulp_status, ulp_word4, did);
2127
2128 ndlp = lpfc_findnode_did(vport, did);
2129 if (!ndlp) {
2130 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
2131 "0136 PLOGI completes to NPort x%x "
2132 "with no ndlp. Data: x%x x%x x%x\n",
2133 did, ulp_status, ulp_word4, iotag);
2134 goto out_freeiocb;
2135 }
2136
2137 /* Since ndlp can be freed in the disc state machine, note if this node
2138 * is being used during discovery.
2139 */
2140 disc = test_and_clear_bit(NLP_NPR_2B_DISC, &ndlp->nlp_flag);
2141
2142 /* PLOGI completes to NPort <nlp_DID> */
2143 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
2144 "0102 PLOGI completes to NPort x%06x "
2145 "IoTag x%x Data: x%x x%x x%x x%x x%x\n",
2146 ndlp->nlp_DID, iotag,
2147 ndlp->nlp_fc4_type,
2148 ulp_status, ulp_word4,
2149 disc, vport->num_disc_nodes);
2150
2151 /* Check to see if link went down during discovery */
2152 if (lpfc_els_chk_latt(vport)) {
2153 set_bit(NLP_NPR_2B_DISC, &ndlp->nlp_flag);
2154 goto out;
2155 }
2156
2157 if (ulp_status) {
2158 /* Check for retry */
2159 if (lpfc_els_retry(phba, cmdiocb, rspiocb)) {
2160 /* ELS command is being retried */
2161 if (disc)
2162 set_bit(NLP_NPR_2B_DISC, &ndlp->nlp_flag);
2163 goto out;
2164 }
2165 /* Warn PLOGI status Don't print the vport to vport rjts */
2166 if (ulp_status != IOSTAT_LS_RJT ||
2167 (((ulp_word4) >> 16 != LSRJT_INVALID_CMD) &&
2168 ((ulp_word4) >> 16 != LSRJT_UNABLE_TPC)) ||
2169 (phba)->pport->cfg_log_verbose & LOG_ELS)
2170 lpfc_vlog_msg(vport, KERN_WARNING, LOG_ELS,
2171 "2753 PLOGI DID:%06X "
2172 "Status:x%x/x%x\n",
2173 ndlp->nlp_DID, ulp_status,
2174 ulp_word4);
2175
2176 /* Do not call DSM for lpfc_els_abort'ed ELS cmds */
2177 if (!lpfc_error_lost_link(vport, ulp_status, ulp_word4))
2178 lpfc_disc_state_machine(vport, ndlp, cmdiocb,
2179 NLP_EVT_CMPL_PLOGI);
2180
2181 /* If a PLOGI collision occurred, the node needs to continue
2182 * with the reglogin process.
2183 */
2184 spin_lock_irq(&ndlp->lock);
2185 if ((test_bit(NLP_ACC_REGLOGIN, &ndlp->nlp_flag) ||
2186 test_bit(NLP_RCV_PLOGI, &ndlp->nlp_flag)) &&
2187 ndlp->nlp_state == NLP_STE_REG_LOGIN_ISSUE) {
2188 spin_unlock_irq(&ndlp->lock);
2189 goto out;
2190 }
2191
2192 /* No PLOGI collision and the node is not registered with the
2193 * scsi or nvme transport. It is no longer an active node. Just
2194 * start the device remove process.
2195 */
2196 if (!(ndlp->fc4_xpt_flags & (SCSI_XPT_REGD | NVME_XPT_REGD))) {
2197 clear_bit(NLP_NPR_2B_DISC, &ndlp->nlp_flag);
2198 if (!test_bit(NLP_IN_DEV_LOSS, &ndlp->nlp_flag))
2199 release_node = true;
2200 }
2201 spin_unlock_irq(&ndlp->lock);
2202
2203 if (release_node)
2204 lpfc_disc_state_machine(vport, ndlp, cmdiocb,
2205 NLP_EVT_DEVICE_RM);
2206 } else {
2207 /* Good status, call state machine */
2208 prsp = list_get_first(&cmdiocb->cmd_dmabuf->list,
2209 struct lpfc_dmabuf, list);
2210 if (!prsp)
2211 goto out;
2212 if (!lpfc_is_els_acc_rsp(prsp))
2213 goto out;
2214 ndlp = lpfc_plogi_confirm_nport(phba, prsp->virt, ndlp);
2215
2216 lpfc_check_encryption(phba, ndlp, cmdiocb, rspiocb);
2217
2218 sp = (struct serv_parm *)((u8 *)prsp->virt +
2219 sizeof(u32));
2220
2221 ndlp->vmid_support = 0;
2222 if ((phba->cfg_vmid_app_header && sp->cmn.app_hdr_support) ||
2223 (phba->cfg_vmid_priority_tagging &&
2224 sp->cmn.priority_tagging)) {
2225 lpfc_printf_log(phba, KERN_DEBUG, LOG_ELS,
2226 "4018 app_hdr_support %d tagging %d DID x%x\n",
2227 sp->cmn.app_hdr_support,
2228 sp->cmn.priority_tagging,
2229 ndlp->nlp_DID);
2230 /* if the dest port supports VMID, mark it in ndlp */
2231 ndlp->vmid_support = 1;
2232 }
2233
2234 lpfc_disc_state_machine(vport, ndlp, cmdiocb,
2235 NLP_EVT_CMPL_PLOGI);
2236 }
2237
2238 if (disc && vport->num_disc_nodes) {
2239 /* Check to see if there are more PLOGIs to be sent */
2240 lpfc_more_plogi(vport);
2241
2242 if (vport->num_disc_nodes == 0) {
2243 clear_bit(FC_NDISC_ACTIVE, &vport->fc_flag);
2244
2245 lpfc_can_disctmo(vport);
2246 lpfc_end_rscn(vport);
2247 }
2248 }
2249
2250out:
2251 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE,
2252 "PLOGI Cmpl PUT: did:x%x refcnt %d",
2253 ndlp->nlp_DID, kref_read(&ndlp->kref), 0);
2254
2255out_freeiocb:
2256 /* Release the reference on the original I/O request. */
2257 free_ndlp = cmdiocb->ndlp;
2258
2259 lpfc_els_free_iocb(phba, cmdiocb);
2260 lpfc_nlp_put(free_ndlp);
2261 return;
2262}
2263
2264/**
2265 * lpfc_issue_els_plogi - Issue an plogi iocb command for a vport
2266 * @vport: pointer to a host virtual N_Port data structure.
2267 * @did: destination port identifier.
2268 * @retry: number of retries to the command IOCB.
2269 *
2270 * This routine issues a Port Login (PLOGI) command to a remote N_Port
2271 * (with the @did) for a @vport. Before issuing a PLOGI to a remote N_Port,
2272 * the ndlp with the remote N_Port DID must exist on the @vport's ndlp list.
2273 * This routine constructs the proper fields of the PLOGI IOCB and invokes
2274 * the lpfc_sli_issue_iocb() routine to send out PLOGI ELS command.
2275 *
2276 * Note that the ndlp reference count will be incremented by 1 for holding
2277 * the ndlp and the reference to ndlp will be stored into the ndlp field
2278 * of the IOCB for the completion callback function to the PLOGI ELS command.
2279 *
2280 * Return code
2281 * 0 - Successfully issued a plogi for @vport
2282 * 1 - failed to issue a plogi for @vport
2283 **/
2284int
2285lpfc_issue_els_plogi(struct lpfc_vport *vport, uint32_t did, uint8_t retry)
2286{
2287 struct lpfc_hba *phba = vport->phba;
2288 struct serv_parm *sp;
2289 struct lpfc_nodelist *ndlp;
2290 struct lpfc_iocbq *elsiocb;
2291 uint8_t *pcmd;
2292 uint16_t cmdsize;
2293 int ret;
2294
2295 ndlp = lpfc_findnode_did(vport, did);
2296 if (!ndlp)
2297 return 1;
2298
2299 /* Defer the processing of the issue PLOGI until after the
2300 * outstanding UNREG_RPI mbox command completes, unless we
2301 * are going offline. This logic does not apply for Fabric DIDs
2302 */
2303 if ((test_bit(NLP_IGNR_REG_CMPL, &ndlp->nlp_flag) ||
2304 test_bit(NLP_UNREG_INP, &ndlp->nlp_flag)) &&
2305 ((ndlp->nlp_DID & Fabric_DID_MASK) != Fabric_DID_MASK) &&
2306 !test_bit(FC_OFFLINE_MODE, &vport->fc_flag)) {
2307 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
2308 "4110 Issue PLOGI x%x deferred "
2309 "on NPort x%x rpi x%x flg x%lx Data:"
2310 " x%px\n",
2311 ndlp->nlp_defer_did, ndlp->nlp_DID,
2312 ndlp->nlp_rpi, ndlp->nlp_flag, ndlp);
2313
2314 /* We can only defer 1st PLOGI */
2315 if (ndlp->nlp_defer_did == NLP_EVT_NOTHING_PENDING)
2316 ndlp->nlp_defer_did = did;
2317 return 0;
2318 }
2319
2320 cmdsize = (sizeof(uint32_t) + sizeof(struct serv_parm));
2321 elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp, did,
2322 ELS_CMD_PLOGI);
2323 if (!elsiocb)
2324 return 1;
2325
2326 pcmd = (uint8_t *)elsiocb->cmd_dmabuf->virt;
2327
2328 /* For PLOGI request, remainder of payload is service parameters */
2329 *((uint32_t *) (pcmd)) = ELS_CMD_PLOGI;
2330 pcmd += sizeof(uint32_t);
2331 memcpy(pcmd, &vport->fc_sparam, sizeof(struct serv_parm));
2332 sp = (struct serv_parm *) pcmd;
2333
2334 /*
2335 * If we are a N-port connected to a Fabric, fix-up paramm's so logins
2336 * to device on remote loops work.
2337 */
2338 if (test_bit(FC_FABRIC, &vport->fc_flag) &&
2339 !test_bit(FC_PUBLIC_LOOP, &vport->fc_flag))
2340 sp->cmn.altBbCredit = 1;
2341
2342 if (sp->cmn.fcphLow < FC_PH_4_3)
2343 sp->cmn.fcphLow = FC_PH_4_3;
2344
2345 if (sp->cmn.fcphHigh < FC_PH3)
2346 sp->cmn.fcphHigh = FC_PH3;
2347
2348 sp->cmn.valid_vendor_ver_level = 0;
2349 memset(sp->un.vendorVersion, 0, sizeof(sp->un.vendorVersion));
2350 if (!test_bit(FC_PT2PT, &vport->fc_flag))
2351 sp->cmn.bbRcvSizeMsb &= 0xF;
2352
2353 /* Check if the destination port supports VMID */
2354 ndlp->vmid_support = 0;
2355 if (vport->vmid_priority_tagging)
2356 sp->cmn.priority_tagging = 1;
2357 else if (phba->cfg_vmid_app_header &&
2358 bf_get(lpfc_ftr_ashdr, &phba->sli4_hba.sli4_flags))
2359 sp->cmn.app_hdr_support = 1;
2360
2361 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
2362 "Issue PLOGI: did:x%x",
2363 did, 0, 0);
2364
2365 /* If our firmware supports this feature, convey that
2366 * information to the target using the vendor specific field.
2367 */
2368 if (phba->sli.sli_flag & LPFC_SLI_SUPPRESS_RSP) {
2369 sp->cmn.valid_vendor_ver_level = 1;
2370 sp->un.vv.vid = cpu_to_be32(LPFC_VV_EMLX_ID);
2371 sp->un.vv.flags = cpu_to_be32(LPFC_VV_SUPPRESS_RSP);
2372 }
2373
2374 phba->fc_stat.elsXmitPLOGI++;
2375 elsiocb->cmd_cmpl = lpfc_cmpl_els_plogi;
2376
2377 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
2378 "Issue PLOGI: did:x%x refcnt %d",
2379 did, kref_read(&ndlp->kref), 0);
2380 elsiocb->ndlp = lpfc_nlp_get(ndlp);
2381 if (!elsiocb->ndlp) {
2382 lpfc_els_free_iocb(phba, elsiocb);
2383 return 1;
2384 }
2385
2386 ret = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
2387 if (ret) {
2388 lpfc_els_free_iocb(phba, elsiocb);
2389 lpfc_nlp_put(ndlp);
2390 return 1;
2391 }
2392
2393 return 0;
2394}
2395
2396/**
2397 * lpfc_cmpl_els_prli - Completion callback function for prli
2398 * @phba: pointer to lpfc hba data structure.
2399 * @cmdiocb: pointer to lpfc command iocb data structure.
2400 * @rspiocb: pointer to lpfc response iocb data structure.
2401 *
2402 * This routine is the completion callback function for a Process Login
2403 * (PRLI) ELS command. The PRLI response IOCB status is checked for error
2404 * status. If there is error status reported, PRLI retry shall be attempted
2405 * by invoking the lpfc_els_retry() routine. Otherwise, the state
2406 * NLP_EVT_CMPL_PRLI is sent to the Discover State Machine (DSM) for this
2407 * ndlp to mark the PRLI completion.
2408 **/
2409static void
2410lpfc_cmpl_els_prli(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
2411 struct lpfc_iocbq *rspiocb)
2412{
2413 struct lpfc_vport *vport = cmdiocb->vport;
2414 struct lpfc_nodelist *ndlp;
2415 char *mode;
2416 u32 ulp_status;
2417 u32 ulp_word4;
2418 bool release_node = false;
2419
2420 /* we pass cmdiocb to state machine which needs rspiocb as well */
2421 cmdiocb->rsp_iocb = rspiocb;
2422
2423 ndlp = cmdiocb->ndlp;
2424
2425 ulp_status = get_job_ulpstatus(phba, rspiocb);
2426 ulp_word4 = get_job_word4(phba, rspiocb);
2427
2428 clear_bit(NLP_PRLI_SND, &ndlp->nlp_flag);
2429
2430 /* Driver supports multiple FC4 types. Counters matter. */
2431 spin_lock_irq(&ndlp->lock);
2432 vport->fc_prli_sent--;
2433 ndlp->fc4_prli_sent--;
2434 spin_unlock_irq(&ndlp->lock);
2435
2436 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
2437 "PRLI cmpl: status:x%x/x%x did:x%x",
2438 ulp_status, ulp_word4,
2439 ndlp->nlp_DID);
2440
2441 /* PRLI completes to NPort <nlp_DID> */
2442 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
2443 "0103 PRLI completes to NPort x%06x "
2444 "Data: x%x x%x x%x x%x x%x\n",
2445 ndlp->nlp_DID, ulp_status, ulp_word4,
2446 vport->num_disc_nodes, ndlp->fc4_prli_sent,
2447 ndlp->fc4_xpt_flags);
2448
2449 /* Check to see if link went down during discovery */
2450 if (lpfc_els_chk_latt(vport))
2451 goto out;
2452
2453 if (ulp_status) {
2454 /* Check for retry */
2455 if (lpfc_els_retry(phba, cmdiocb, rspiocb)) {
2456 /* ELS command is being retried */
2457 goto out;
2458 }
2459
2460 /* If we don't send GFT_ID to Fabric, a PRLI error
2461 * could be expected.
2462 */
2463 if (test_bit(FC_FABRIC, &vport->fc_flag) ||
2464 vport->cfg_enable_fc4_type != LPFC_ENABLE_BOTH)
2465 mode = KERN_WARNING;
2466 else
2467 mode = KERN_INFO;
2468
2469 /* Warn PRLI status */
2470 lpfc_vlog_msg(vport, mode, LOG_ELS,
2471 "2754 PRLI DID:%06X Status:x%x/x%x, "
2472 "data: x%x x%x x%lx\n",
2473 ndlp->nlp_DID, ulp_status,
2474 ulp_word4, ndlp->nlp_state,
2475 ndlp->fc4_prli_sent, ndlp->nlp_flag);
2476
2477 /* Do not call DSM for lpfc_els_abort'ed ELS cmds */
2478 if (!lpfc_error_lost_link(vport, ulp_status, ulp_word4))
2479 lpfc_disc_state_machine(vport, ndlp, cmdiocb,
2480 NLP_EVT_CMPL_PRLI);
2481
2482 /* The following condition catches an inflight transition
2483 * mismatch typically caused by an RSCN. Skip any
2484 * processing to allow recovery.
2485 */
2486 if ((ndlp->nlp_state >= NLP_STE_PLOGI_ISSUE &&
2487 ndlp->nlp_state <= NLP_STE_REG_LOGIN_ISSUE) ||
2488 (ndlp->nlp_state == NLP_STE_NPR_NODE &&
2489 test_bit(NLP_DELAY_TMO, &ndlp->nlp_flag))) {
2490 lpfc_printf_vlog(vport, KERN_ERR, LOG_NODE,
2491 "2784 PRLI cmpl: Allow Node recovery "
2492 "DID x%06x nstate x%x nflag x%lx\n",
2493 ndlp->nlp_DID, ndlp->nlp_state,
2494 ndlp->nlp_flag);
2495 goto out;
2496 }
2497
2498 /*
2499 * For P2P topology, retain the node so that PLOGI can be
2500 * attempted on it again.
2501 */
2502 if (test_bit(FC_PT2PT, &vport->fc_flag))
2503 goto out;
2504
2505 /* As long as this node is not registered with the SCSI
2506 * or NVMe transport and no other PRLIs are outstanding,
2507 * it is no longer an active node. Otherwise devloss
2508 * handles the final cleanup.
2509 */
2510 spin_lock_irq(&ndlp->lock);
2511 if (!(ndlp->fc4_xpt_flags & (SCSI_XPT_REGD | NVME_XPT_REGD)) &&
2512 !ndlp->fc4_prli_sent) {
2513 clear_bit(NLP_NPR_2B_DISC, &ndlp->nlp_flag);
2514 if (!test_bit(NLP_IN_DEV_LOSS, &ndlp->nlp_flag))
2515 release_node = true;
2516 }
2517 spin_unlock_irq(&ndlp->lock);
2518
2519 if (release_node)
2520 lpfc_disc_state_machine(vport, ndlp, cmdiocb,
2521 NLP_EVT_DEVICE_RM);
2522 } else {
2523 /* Good status, call state machine. However, if another
2524 * PRLI is outstanding, don't call the state machine
2525 * because final disposition to Mapped or Unmapped is
2526 * completed there.
2527 */
2528 lpfc_disc_state_machine(vport, ndlp, cmdiocb,
2529 NLP_EVT_CMPL_PRLI);
2530 }
2531
2532out:
2533 lpfc_els_free_iocb(phba, cmdiocb);
2534 lpfc_nlp_put(ndlp);
2535 return;
2536}
2537
2538/**
2539 * lpfc_issue_els_prli - Issue a prli iocb command for a vport
2540 * @vport: pointer to a host virtual N_Port data structure.
2541 * @ndlp: pointer to a node-list data structure.
2542 * @retry: number of retries to the command IOCB.
2543 *
2544 * This routine issues a Process Login (PRLI) ELS command for the
2545 * @vport. The PRLI service parameters are set up in the payload of the
2546 * PRLI Request command and the pointer to lpfc_cmpl_els_prli() routine
2547 * is put to the IOCB completion callback func field before invoking the
2548 * routine lpfc_sli_issue_iocb() to send out PRLI command.
2549 *
2550 * Note that the ndlp reference count will be incremented by 1 for holding the
2551 * ndlp and the reference to ndlp will be stored into the ndlp field of
2552 * the IOCB for the completion callback function to the PRLI ELS command.
2553 *
2554 * Return code
2555 * 0 - successfully issued prli iocb command for @vport
2556 * 1 - failed to issue prli iocb command for @vport
2557 **/
2558int
2559lpfc_issue_els_prli(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2560 uint8_t retry)
2561{
2562 int rc = 0;
2563 struct lpfc_hba *phba = vport->phba;
2564 PRLI *npr;
2565 struct lpfc_nvme_prli *npr_nvme;
2566 struct lpfc_iocbq *elsiocb;
2567 uint8_t *pcmd;
2568 uint16_t cmdsize;
2569 u32 local_nlp_type, elscmd;
2570
2571 /*
2572 * If we are in RSCN mode, the FC4 types supported from a
2573 * previous GFT_ID command may not be accurate. So, if we
2574 * are a NVME Initiator, always look for the possibility of
2575 * the remote NPort beng a NVME Target.
2576 */
2577 if (phba->sli_rev == LPFC_SLI_REV4 &&
2578 test_bit(FC_RSCN_MODE, &vport->fc_flag) &&
2579 vport->nvmei_support)
2580 ndlp->nlp_fc4_type |= NLP_FC4_NVME;
2581 local_nlp_type = ndlp->nlp_fc4_type;
2582
2583 /* This routine will issue 1 or 2 PRLIs, so zero all the ndlp
2584 * fields here before any of them can complete.
2585 */
2586 ndlp->nlp_type &= ~(NLP_FCP_TARGET | NLP_FCP_INITIATOR);
2587 ndlp->nlp_type &= ~(NLP_NVME_TARGET | NLP_NVME_INITIATOR);
2588 ndlp->nlp_fcp_info &= ~NLP_FCP_2_DEVICE;
2589 clear_bit(NLP_FIRSTBURST, &ndlp->nlp_flag);
2590 clear_bit(NLP_NPR_2B_DISC, &ndlp->nlp_flag);
2591 ndlp->nvme_fb_size = 0;
2592
2593 send_next_prli:
2594 if (local_nlp_type & NLP_FC4_FCP) {
2595 /* Payload is 4 + 16 = 20 x14 bytes. */
2596 cmdsize = (sizeof(uint32_t) + sizeof(PRLI));
2597 elscmd = ELS_CMD_PRLI;
2598 } else if (local_nlp_type & NLP_FC4_NVME) {
2599 /* Payload is 4 + 20 = 24 x18 bytes. */
2600 cmdsize = (sizeof(uint32_t) + sizeof(struct lpfc_nvme_prli));
2601 elscmd = ELS_CMD_NVMEPRLI;
2602 } else {
2603 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
2604 "3083 Unknown FC_TYPE x%x ndlp x%06x\n",
2605 ndlp->nlp_fc4_type, ndlp->nlp_DID);
2606 return 1;
2607 }
2608
2609 /* SLI3 ports don't support NVME. If this rport is a strict NVME
2610 * FC4 type, implicitly LOGO.
2611 */
2612 if (phba->sli_rev == LPFC_SLI_REV3 &&
2613 ndlp->nlp_fc4_type == NLP_FC4_NVME) {
2614 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
2615 "3088 Rport fc4 type 0x%x not supported by SLI3 adapter\n",
2616 ndlp->nlp_type);
2617 lpfc_disc_state_machine(vport, ndlp, NULL, NLP_EVT_DEVICE_RM);
2618 return 1;
2619 }
2620
2621 elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp,
2622 ndlp->nlp_DID, elscmd);
2623 if (!elsiocb)
2624 return 1;
2625
2626 pcmd = (uint8_t *)elsiocb->cmd_dmabuf->virt;
2627
2628 /* For PRLI request, remainder of payload is service parameters */
2629 memset(pcmd, 0, cmdsize);
2630
2631 if (local_nlp_type & NLP_FC4_FCP) {
2632 /* Remainder of payload is FCP PRLI parameter page.
2633 * Note: this data structure is defined as
2634 * BE/LE in the structure definition so no
2635 * byte swap call is made.
2636 */
2637 *((uint32_t *)(pcmd)) = ELS_CMD_PRLI;
2638 pcmd += sizeof(uint32_t);
2639 npr = (PRLI *)pcmd;
2640
2641 /*
2642 * If our firmware version is 3.20 or later,
2643 * set the following bits for FC-TAPE support.
2644 */
2645 if (phba->vpd.rev.feaLevelHigh >= 0x02) {
2646 npr->ConfmComplAllowed = 1;
2647 npr->Retry = 1;
2648 npr->TaskRetryIdReq = 1;
2649 }
2650 npr->estabImagePair = 1;
2651 npr->readXferRdyDis = 1;
2652 if (phba->sli_rev == LPFC_SLI_REV4 &&
2653 !test_bit(HBA_FCOE_MODE, &phba->hba_flag) &&
2654 vport->cfg_first_burst_size)
2655 npr->writeXferRdyDis = 1;
2656
2657 /* For FCP support */
2658 npr->prliType = PRLI_FCP_TYPE;
2659 npr->initiatorFunc = 1;
2660 elsiocb->cmd_flag |= LPFC_PRLI_FCP_REQ;
2661
2662 /* Remove FCP type - processed. */
2663 local_nlp_type &= ~NLP_FC4_FCP;
2664 } else if (local_nlp_type & NLP_FC4_NVME) {
2665 /* Remainder of payload is NVME PRLI parameter page.
2666 * This data structure is the newer definition that
2667 * uses bf macros so a byte swap is required.
2668 */
2669 *((uint32_t *)(pcmd)) = ELS_CMD_NVMEPRLI;
2670 pcmd += sizeof(uint32_t);
2671 npr_nvme = (struct lpfc_nvme_prli *)pcmd;
2672 bf_set(prli_type_code, npr_nvme, PRLI_NVME_TYPE);
2673 bf_set(prli_estabImagePair, npr_nvme, 0); /* Should be 0 */
2674 if (phba->nsler) {
2675 bf_set(prli_nsler, npr_nvme, 1);
2676 bf_set(prli_conf, npr_nvme, 1);
2677 }
2678
2679 /* Only initiators request first burst. */
2680 if ((phba->cfg_nvme_enable_fb) &&
2681 !phba->nvmet_support)
2682 bf_set(prli_fba, npr_nvme, 1);
2683
2684 if (phba->nvmet_support) {
2685 bf_set(prli_tgt, npr_nvme, 1);
2686 bf_set(prli_disc, npr_nvme, 1);
2687 } else {
2688 bf_set(prli_init, npr_nvme, 1);
2689 bf_set(prli_conf, npr_nvme, 1);
2690 }
2691
2692 npr_nvme->word1 = cpu_to_be32(npr_nvme->word1);
2693 npr_nvme->word4 = cpu_to_be32(npr_nvme->word4);
2694 elsiocb->cmd_flag |= LPFC_PRLI_NVME_REQ;
2695
2696 /* Remove NVME type - processed. */
2697 local_nlp_type &= ~NLP_FC4_NVME;
2698 }
2699
2700 phba->fc_stat.elsXmitPRLI++;
2701 elsiocb->cmd_cmpl = lpfc_cmpl_els_prli;
2702
2703 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
2704 "Issue PRLI: did:x%x refcnt %d",
2705 ndlp->nlp_DID, kref_read(&ndlp->kref), 0);
2706 elsiocb->ndlp = lpfc_nlp_get(ndlp);
2707 if (!elsiocb->ndlp) {
2708 lpfc_els_free_iocb(phba, elsiocb);
2709 return 1;
2710 }
2711
2712 rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
2713 if (rc == IOCB_ERROR) {
2714 lpfc_els_free_iocb(phba, elsiocb);
2715 lpfc_nlp_put(ndlp);
2716 return 1;
2717 }
2718
2719 /* The vport counters are used for lpfc_scan_finished, but
2720 * the ndlp is used to track outstanding PRLIs for different
2721 * FC4 types.
2722 */
2723 set_bit(NLP_PRLI_SND, &ndlp->nlp_flag);
2724 spin_lock_irq(&ndlp->lock);
2725 vport->fc_prli_sent++;
2726 ndlp->fc4_prli_sent++;
2727 spin_unlock_irq(&ndlp->lock);
2728
2729 /* The driver supports 2 FC4 types. Make sure
2730 * a PRLI is issued for all types before exiting.
2731 */
2732 if (phba->sli_rev == LPFC_SLI_REV4 &&
2733 local_nlp_type & (NLP_FC4_FCP | NLP_FC4_NVME))
2734 goto send_next_prli;
2735 else
2736 return 0;
2737}
2738
2739/**
2740 * lpfc_rscn_disc - Perform rscn discovery for a vport
2741 * @vport: pointer to a host virtual N_Port data structure.
2742 *
2743 * This routine performs Registration State Change Notification (RSCN)
2744 * discovery for a @vport. If the @vport's node port recovery count is not
2745 * zero, it will invoke the lpfc_els_disc_plogi() to perform PLOGI for all
2746 * the nodes that need recovery. If none of the PLOGI were needed through
2747 * the lpfc_els_disc_plogi() routine, the lpfc_end_rscn() routine shall be
2748 * invoked to check and handle possible more RSCN came in during the period
2749 * of processing the current ones.
2750 **/
2751static void
2752lpfc_rscn_disc(struct lpfc_vport *vport)
2753{
2754 lpfc_can_disctmo(vport);
2755
2756 /* RSCN discovery */
2757 /* go thru NPR nodes and issue ELS PLOGIs */
2758 if (atomic_read(&vport->fc_npr_cnt))
2759 if (lpfc_els_disc_plogi(vport))
2760 return;
2761
2762 lpfc_end_rscn(vport);
2763}
2764
2765/**
2766 * lpfc_adisc_done - Complete the adisc phase of discovery
2767 * @vport: pointer to lpfc_vport hba data structure that finished all ADISCs.
2768 *
2769 * This function is called when the final ADISC is completed during discovery.
2770 * This function handles clearing link attention or issuing reg_vpi depending
2771 * on whether npiv is enabled. This function also kicks off the PLOGI phase of
2772 * discovery.
2773 * This function is called with no locks held.
2774 **/
2775static void
2776lpfc_adisc_done(struct lpfc_vport *vport)
2777{
2778 struct lpfc_hba *phba = vport->phba;
2779
2780 /*
2781 * For NPIV, cmpl_reg_vpi will set port_state to READY,
2782 * and continue discovery.
2783 */
2784 if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
2785 !test_bit(FC_RSCN_MODE, &vport->fc_flag) &&
2786 (phba->sli_rev < LPFC_SLI_REV4)) {
2787
2788 /*
2789 * If link is down, clear_la and reg_vpi will be done after
2790 * flogi following a link up event
2791 */
2792 if (!lpfc_is_link_up(phba))
2793 return;
2794
2795 /* The ADISCs are complete. Doesn't matter if they
2796 * succeeded or failed because the ADISC completion
2797 * routine guarantees to call the state machine and
2798 * the RPI is either unregistered (failed ADISC response)
2799 * or the RPI is still valid and the node is marked
2800 * mapped for a target. The exchanges should be in the
2801 * correct state. This code is specific to SLI3.
2802 */
2803 lpfc_issue_clear_la(phba, vport);
2804 lpfc_issue_reg_vpi(phba, vport);
2805 return;
2806 }
2807 /*
2808 * For SLI2, we need to set port_state to READY
2809 * and continue discovery.
2810 */
2811 if (vport->port_state < LPFC_VPORT_READY) {
2812 /* If we get here, there is nothing to ADISC */
2813 lpfc_issue_clear_la(phba, vport);
2814 if (!test_bit(FC_ABORT_DISCOVERY, &vport->fc_flag)) {
2815 vport->num_disc_nodes = 0;
2816 /* go thru NPR list, issue ELS PLOGIs */
2817 if (atomic_read(&vport->fc_npr_cnt))
2818 lpfc_els_disc_plogi(vport);
2819 if (!vport->num_disc_nodes) {
2820 clear_bit(FC_NDISC_ACTIVE, &vport->fc_flag);
2821 lpfc_can_disctmo(vport);
2822 lpfc_end_rscn(vport);
2823 }
2824 }
2825 vport->port_state = LPFC_VPORT_READY;
2826 } else
2827 lpfc_rscn_disc(vport);
2828}
2829
2830/**
2831 * lpfc_more_adisc - Issue more adisc as needed
2832 * @vport: pointer to a host virtual N_Port data structure.
2833 *
2834 * This routine determines whether there are more ndlps on a @vport
2835 * node list need to have Address Discover (ADISC) issued. If so, it will
2836 * invoke the lpfc_els_disc_adisc() routine to issue ADISC on the @vport's
2837 * remaining nodes which need to have ADISC sent.
2838 **/
2839void
2840lpfc_more_adisc(struct lpfc_vport *vport)
2841{
2842 if (vport->num_disc_nodes)
2843 vport->num_disc_nodes--;
2844 /* Continue discovery with <num_disc_nodes> ADISCs to go */
2845 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
2846 "0210 Continue discovery with %d ADISCs to go "
2847 "Data: x%x x%lx x%x\n",
2848 vport->num_disc_nodes,
2849 atomic_read(&vport->fc_adisc_cnt),
2850 vport->fc_flag, vport->port_state);
2851 /* Check to see if there are more ADISCs to be sent */
2852 if (test_bit(FC_NLP_MORE, &vport->fc_flag)) {
2853 lpfc_set_disctmo(vport);
2854 /* go thru NPR nodes and issue any remaining ELS ADISCs */
2855 lpfc_els_disc_adisc(vport);
2856 }
2857 if (!vport->num_disc_nodes)
2858 lpfc_adisc_done(vport);
2859 return;
2860}
2861
2862/**
2863 * lpfc_cmpl_els_adisc - Completion callback function for adisc
2864 * @phba: pointer to lpfc hba data structure.
2865 * @cmdiocb: pointer to lpfc command iocb data structure.
2866 * @rspiocb: pointer to lpfc response iocb data structure.
2867 *
2868 * This routine is the completion function for issuing the Address Discover
2869 * (ADISC) command. It first checks to see whether link went down during
2870 * the discovery process. If so, the node will be marked as node port
2871 * recovery for issuing discover IOCB by the link attention handler and
2872 * exit. Otherwise, the response status is checked. If error was reported
2873 * in the response status, the ADISC command shall be retried by invoking
2874 * the lpfc_els_retry() routine. Otherwise, if no error was reported in
2875 * the response status, the state machine is invoked to set transition
2876 * with respect to NLP_EVT_CMPL_ADISC event.
2877 **/
2878static void
2879lpfc_cmpl_els_adisc(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
2880 struct lpfc_iocbq *rspiocb)
2881{
2882 struct lpfc_vport *vport = cmdiocb->vport;
2883 IOCB_t *irsp;
2884 struct lpfc_nodelist *ndlp;
2885 bool disc;
2886 u32 ulp_status, ulp_word4, tmo, iotag;
2887 bool release_node = false;
2888
2889 /* we pass cmdiocb to state machine which needs rspiocb as well */
2890 cmdiocb->rsp_iocb = rspiocb;
2891
2892 ndlp = cmdiocb->ndlp;
2893
2894 ulp_status = get_job_ulpstatus(phba, rspiocb);
2895 ulp_word4 = get_job_word4(phba, rspiocb);
2896
2897 if (phba->sli_rev == LPFC_SLI_REV4) {
2898 tmo = get_wqe_tmo(cmdiocb);
2899 iotag = get_wqe_reqtag(cmdiocb);
2900 } else {
2901 irsp = &rspiocb->iocb;
2902 tmo = irsp->ulpTimeout;
2903 iotag = irsp->ulpIoTag;
2904 }
2905
2906 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
2907 "ADISC cmpl: status:x%x/x%x did:x%x",
2908 ulp_status, ulp_word4,
2909 ndlp->nlp_DID);
2910
2911 /* Since ndlp can be freed in the disc state machine, note if this node
2912 * is being used during discovery.
2913 */
2914 disc = test_and_clear_bit(NLP_NPR_2B_DISC, &ndlp->nlp_flag);
2915 clear_bit(NLP_ADISC_SND, &ndlp->nlp_flag);
2916 /* ADISC completes to NPort <nlp_DID> */
2917 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
2918 "0104 ADISC completes to NPort x%x "
2919 "IoTag x%x Data: x%x x%x x%x x%x x%x\n",
2920 ndlp->nlp_DID, iotag,
2921 ulp_status, ulp_word4,
2922 tmo, disc, vport->num_disc_nodes);
2923
2924 /* Check to see if link went down during discovery */
2925 if (lpfc_els_chk_latt(vport)) {
2926 set_bit(NLP_NPR_2B_DISC, &ndlp->nlp_flag);
2927 goto out;
2928 }
2929
2930 if (ulp_status) {
2931 /* Check for retry */
2932 if (lpfc_els_retry(phba, cmdiocb, rspiocb)) {
2933 /* ELS command is being retried */
2934 if (disc) {
2935 set_bit(NLP_NPR_2B_DISC, &ndlp->nlp_flag);
2936 lpfc_set_disctmo(vport);
2937 }
2938 goto out;
2939 }
2940 /* Warn ADISC status */
2941 lpfc_vlog_msg(vport, KERN_WARNING, LOG_ELS,
2942 "2755 ADISC DID:%06X Status:x%x/x%x\n",
2943 ndlp->nlp_DID, ulp_status,
2944 ulp_word4);
2945 lpfc_disc_state_machine(vport, ndlp, cmdiocb,
2946 NLP_EVT_CMPL_ADISC);
2947
2948 /* As long as this node is not registered with the SCSI or NVMe
2949 * transport, it is no longer an active node. Otherwise
2950 * devloss handles the final cleanup.
2951 */
2952 spin_lock_irq(&ndlp->lock);
2953 if (!(ndlp->fc4_xpt_flags & (SCSI_XPT_REGD | NVME_XPT_REGD))) {
2954 clear_bit(NLP_NPR_2B_DISC, &ndlp->nlp_flag);
2955 if (!test_bit(NLP_IN_DEV_LOSS, &ndlp->nlp_flag))
2956 release_node = true;
2957 }
2958 spin_unlock_irq(&ndlp->lock);
2959
2960 if (release_node)
2961 lpfc_disc_state_machine(vport, ndlp, cmdiocb,
2962 NLP_EVT_DEVICE_RM);
2963 } else
2964 /* Good status, call state machine */
2965 lpfc_disc_state_machine(vport, ndlp, cmdiocb,
2966 NLP_EVT_CMPL_ADISC);
2967
2968 /* Check to see if there are more ADISCs to be sent */
2969 if (disc && vport->num_disc_nodes)
2970 lpfc_more_adisc(vport);
2971out:
2972 lpfc_els_free_iocb(phba, cmdiocb);
2973 lpfc_nlp_put(ndlp);
2974 return;
2975}
2976
2977/**
2978 * lpfc_issue_els_adisc - Issue an address discover iocb to an node on a vport
2979 * @vport: pointer to a virtual N_Port data structure.
2980 * @ndlp: pointer to a node-list data structure.
2981 * @retry: number of retries to the command IOCB.
2982 *
2983 * This routine issues an Address Discover (ADISC) for an @ndlp on a
2984 * @vport. It prepares the payload of the ADISC ELS command, updates the
2985 * and states of the ndlp, and invokes the lpfc_sli_issue_iocb() routine
2986 * to issue the ADISC ELS command.
2987 *
2988 * Note that the ndlp reference count will be incremented by 1 for holding the
2989 * ndlp and the reference to ndlp will be stored into the ndlp field of
2990 * the IOCB for the completion callback function to the ADISC ELS command.
2991 *
2992 * Return code
2993 * 0 - successfully issued adisc
2994 * 1 - failed to issue adisc
2995 **/
2996int
2997lpfc_issue_els_adisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2998 uint8_t retry)
2999{
3000 int rc = 0;
3001 struct lpfc_hba *phba = vport->phba;
3002 ADISC *ap;
3003 struct lpfc_iocbq *elsiocb;
3004 uint8_t *pcmd;
3005 uint16_t cmdsize;
3006
3007 cmdsize = (sizeof(uint32_t) + sizeof(ADISC));
3008 elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp,
3009 ndlp->nlp_DID, ELS_CMD_ADISC);
3010 if (!elsiocb)
3011 return 1;
3012
3013 pcmd = (uint8_t *)elsiocb->cmd_dmabuf->virt;
3014
3015 /* For ADISC request, remainder of payload is service parameters */
3016 *((uint32_t *) (pcmd)) = ELS_CMD_ADISC;
3017 pcmd += sizeof(uint32_t);
3018
3019 /* Fill in ADISC payload */
3020 ap = (ADISC *) pcmd;
3021 ap->hardAL_PA = phba->fc_pref_ALPA;
3022 memcpy(&ap->portName, &vport->fc_portname, sizeof(struct lpfc_name));
3023 memcpy(&ap->nodeName, &vport->fc_nodename, sizeof(struct lpfc_name));
3024 ap->DID = be32_to_cpu(vport->fc_myDID);
3025
3026 phba->fc_stat.elsXmitADISC++;
3027 elsiocb->cmd_cmpl = lpfc_cmpl_els_adisc;
3028 set_bit(NLP_ADISC_SND, &ndlp->nlp_flag);
3029 elsiocb->ndlp = lpfc_nlp_get(ndlp);
3030 if (!elsiocb->ndlp) {
3031 lpfc_els_free_iocb(phba, elsiocb);
3032 goto err;
3033 }
3034
3035 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
3036 "Issue ADISC: did:x%x refcnt %d",
3037 ndlp->nlp_DID, kref_read(&ndlp->kref), 0);
3038
3039 rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
3040 if (rc == IOCB_ERROR) {
3041 lpfc_els_free_iocb(phba, elsiocb);
3042 lpfc_nlp_put(ndlp);
3043 goto err;
3044 }
3045
3046 return 0;
3047
3048err:
3049 clear_bit(NLP_ADISC_SND, &ndlp->nlp_flag);
3050 return 1;
3051}
3052
3053/**
3054 * lpfc_cmpl_els_logo - Completion callback function for logo
3055 * @phba: pointer to lpfc hba data structure.
3056 * @cmdiocb: pointer to lpfc command iocb data structure.
3057 * @rspiocb: pointer to lpfc response iocb data structure.
3058 *
3059 * This routine is the completion function for issuing the ELS Logout (LOGO)
3060 * command. If no error status was reported from the LOGO response, the
3061 * state machine of the associated ndlp shall be invoked for transition with
3062 * respect to NLP_EVT_CMPL_LOGO event.
3063 **/
3064static void
3065lpfc_cmpl_els_logo(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
3066 struct lpfc_iocbq *rspiocb)
3067{
3068 struct lpfc_nodelist *ndlp = cmdiocb->ndlp;
3069 struct lpfc_vport *vport = ndlp->vport;
3070 IOCB_t *irsp;
3071 uint32_t skip_recovery = 0;
3072 int wake_up_waiter = 0;
3073 u32 ulp_status;
3074 u32 ulp_word4;
3075 u32 tmo, iotag;
3076
3077 /* we pass cmdiocb to state machine which needs rspiocb as well */
3078 cmdiocb->rsp_iocb = rspiocb;
3079
3080 ulp_status = get_job_ulpstatus(phba, rspiocb);
3081 ulp_word4 = get_job_word4(phba, rspiocb);
3082
3083 if (phba->sli_rev == LPFC_SLI_REV4) {
3084 tmo = get_wqe_tmo(cmdiocb);
3085 iotag = get_wqe_reqtag(cmdiocb);
3086 } else {
3087 irsp = &rspiocb->iocb;
3088 tmo = irsp->ulpTimeout;
3089 iotag = irsp->ulpIoTag;
3090 }
3091
3092 clear_bit(NLP_LOGO_SND, &ndlp->nlp_flag);
3093 if (test_and_clear_bit(NLP_WAIT_FOR_LOGO, &ndlp->save_flags))
3094 wake_up_waiter = 1;
3095
3096 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
3097 "LOGO cmpl: status:x%x/x%x did:x%x",
3098 ulp_status, ulp_word4,
3099 ndlp->nlp_DID);
3100
3101 /* LOGO completes to NPort <nlp_DID> */
3102 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
3103 "0105 LOGO completes to NPort x%x "
3104 "IoTag x%x refcnt %d nflags x%lx xflags x%x "
3105 "Data: x%x x%x x%x x%x\n",
3106 ndlp->nlp_DID, iotag,
3107 kref_read(&ndlp->kref), ndlp->nlp_flag,
3108 ndlp->fc4_xpt_flags, ulp_status, ulp_word4,
3109 tmo, vport->num_disc_nodes);
3110
3111 if (lpfc_els_chk_latt(vport)) {
3112 skip_recovery = 1;
3113 goto out;
3114 }
3115
3116 /* The LOGO will not be retried on failure. A LOGO was
3117 * issued to the remote rport and a ACC or RJT or no Answer are
3118 * all acceptable. Note the failure and move forward with
3119 * discovery. The PLOGI will retry.
3120 */
3121 if (ulp_status) {
3122 /* Warn LOGO status */
3123 lpfc_vlog_msg(vport, KERN_WARNING, LOG_ELS,
3124 "2756 LOGO, No Retry DID:%06X "
3125 "Status:x%x/x%x\n",
3126 ndlp->nlp_DID, ulp_status,
3127 ulp_word4);
3128
3129 /* Call NLP_EVT_DEVICE_RM if link is down or LOGO is aborted */
3130 if (lpfc_error_lost_link(vport, ulp_status, ulp_word4))
3131 skip_recovery = 1;
3132 }
3133
3134 /* Call state machine. This will unregister the rpi if needed. */
3135 lpfc_disc_state_machine(vport, ndlp, cmdiocb, NLP_EVT_CMPL_LOGO);
3136
3137out:
3138 /* At this point, the LOGO processing is complete. NOTE: For a
3139 * pt2pt topology, we are assuming the NPortID will only change
3140 * on link up processing. For a LOGO / PLOGI initiated by the
3141 * Initiator, we are assuming the NPortID is not going to change.
3142 */
3143
3144 if (wake_up_waiter && ndlp->logo_waitq)
3145 wake_up(ndlp->logo_waitq);
3146 /*
3147 * If the node is a target, the handling attempts to recover the port.
3148 * For any other port type, the rpi is unregistered as an implicit
3149 * LOGO.
3150 */
3151 if (ndlp->nlp_type & (NLP_FCP_TARGET | NLP_NVME_TARGET) &&
3152 skip_recovery == 0) {
3153 lpfc_cancel_retry_delay_tmo(vport, ndlp);
3154 set_bit(NLP_NPR_2B_DISC, &ndlp->nlp_flag);
3155
3156 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
3157 "3187 LOGO completes to NPort x%x: Start "
3158 "Recovery Data: x%x x%x x%x x%x\n",
3159 ndlp->nlp_DID, ulp_status,
3160 ulp_word4, tmo,
3161 vport->num_disc_nodes);
3162
3163 lpfc_els_free_iocb(phba, cmdiocb);
3164 lpfc_nlp_put(ndlp);
3165
3166 lpfc_disc_start(vport);
3167 return;
3168 }
3169
3170 /* Cleanup path for failed REG_RPI handling. If REG_RPI fails, the
3171 * driver sends a LOGO to the rport to cleanup. For fabric and
3172 * initiator ports cleanup the node as long as it the node is not
3173 * register with the transport.
3174 */
3175 if (!(ndlp->fc4_xpt_flags & (SCSI_XPT_REGD | NVME_XPT_REGD))) {
3176 clear_bit(NLP_NPR_2B_DISC, &ndlp->nlp_flag);
3177 lpfc_disc_state_machine(vport, ndlp, cmdiocb,
3178 NLP_EVT_DEVICE_RM);
3179 }
3180
3181 /* Driver is done with the I/O. */
3182 lpfc_els_free_iocb(phba, cmdiocb);
3183 lpfc_nlp_put(ndlp);
3184}
3185
3186/**
3187 * lpfc_issue_els_logo - Issue a logo to an node on a vport
3188 * @vport: pointer to a virtual N_Port data structure.
3189 * @ndlp: pointer to a node-list data structure.
3190 * @retry: number of retries to the command IOCB.
3191 *
3192 * This routine constructs and issues an ELS Logout (LOGO) iocb command
3193 * to a remote node, referred by an @ndlp on a @vport. It constructs the
3194 * payload of the IOCB, properly sets up the @ndlp state, and invokes the
3195 * lpfc_sli_issue_iocb() routine to send out the LOGO ELS command.
3196 *
3197 * Note that the ndlp reference count will be incremented by 1 for holding the
3198 * ndlp and the reference to ndlp will be stored into the ndlp field of
3199 * the IOCB for the completion callback function to the LOGO ELS command.
3200 *
3201 * Callers of this routine are expected to unregister the RPI first
3202 *
3203 * Return code
3204 * 0 - successfully issued logo
3205 * 1 - failed to issue logo
3206 **/
3207int
3208lpfc_issue_els_logo(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
3209 uint8_t retry)
3210{
3211 struct lpfc_hba *phba = vport->phba;
3212 struct lpfc_iocbq *elsiocb;
3213 uint8_t *pcmd;
3214 uint16_t cmdsize;
3215 int rc;
3216
3217 if (test_bit(NLP_LOGO_SND, &ndlp->nlp_flag))
3218 return 0;
3219
3220 cmdsize = (2 * sizeof(uint32_t)) + sizeof(struct lpfc_name);
3221 elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp,
3222 ndlp->nlp_DID, ELS_CMD_LOGO);
3223 if (!elsiocb)
3224 return 1;
3225
3226 pcmd = (uint8_t *)elsiocb->cmd_dmabuf->virt;
3227 *((uint32_t *) (pcmd)) = ELS_CMD_LOGO;
3228 pcmd += sizeof(uint32_t);
3229
3230 /* Fill in LOGO payload */
3231 *((uint32_t *) (pcmd)) = be32_to_cpu(vport->fc_myDID);
3232 pcmd += sizeof(uint32_t);
3233 memcpy(pcmd, &vport->fc_portname, sizeof(struct lpfc_name));
3234
3235 phba->fc_stat.elsXmitLOGO++;
3236 elsiocb->cmd_cmpl = lpfc_cmpl_els_logo;
3237 set_bit(NLP_LOGO_SND, &ndlp->nlp_flag);
3238 clear_bit(NLP_ISSUE_LOGO, &ndlp->nlp_flag);
3239 elsiocb->ndlp = lpfc_nlp_get(ndlp);
3240 if (!elsiocb->ndlp) {
3241 lpfc_els_free_iocb(phba, elsiocb);
3242 goto err;
3243 }
3244
3245 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
3246 "Issue LOGO: did:x%x refcnt %d",
3247 ndlp->nlp_DID, kref_read(&ndlp->kref), 0);
3248
3249 rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
3250 if (rc == IOCB_ERROR) {
3251 lpfc_els_free_iocb(phba, elsiocb);
3252 lpfc_nlp_put(ndlp);
3253 goto err;
3254 }
3255
3256 spin_lock_irq(&ndlp->lock);
3257 ndlp->nlp_prev_state = ndlp->nlp_state;
3258 spin_unlock_irq(&ndlp->lock);
3259 lpfc_nlp_set_state(vport, ndlp, NLP_STE_LOGO_ISSUE);
3260 return 0;
3261
3262err:
3263 clear_bit(NLP_LOGO_SND, &ndlp->nlp_flag);
3264 return 1;
3265}
3266
3267/**
3268 * lpfc_cmpl_els_cmd - Completion callback function for generic els command
3269 * @phba: pointer to lpfc hba data structure.
3270 * @cmdiocb: pointer to lpfc command iocb data structure.
3271 * @rspiocb: pointer to lpfc response iocb data structure.
3272 *
3273 * This routine is a generic completion callback function for ELS commands.
3274 * Specifically, it is the callback function which does not need to perform
3275 * any command specific operations. It is currently used by the ELS command
3276 * issuing routines for RSCN, lpfc_issue_els_rscn, and the ELS Fibre Channel
3277 * Address Resolution Protocol Response (FARPR) routine, lpfc_issue_els_farpr().
3278 * Other than certain debug loggings, this callback function simply invokes the
3279 * lpfc_els_chk_latt() routine to check whether link went down during the
3280 * discovery process.
3281 **/
3282static void
3283lpfc_cmpl_els_cmd(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
3284 struct lpfc_iocbq *rspiocb)
3285{
3286 struct lpfc_vport *vport = cmdiocb->vport;
3287 struct lpfc_nodelist *free_ndlp;
3288 IOCB_t *irsp;
3289 u32 ulp_status, ulp_word4, tmo, did, iotag;
3290
3291 ulp_status = get_job_ulpstatus(phba, rspiocb);
3292 ulp_word4 = get_job_word4(phba, rspiocb);
3293 did = get_job_els_rsp64_did(phba, cmdiocb);
3294
3295 if (phba->sli_rev == LPFC_SLI_REV4) {
3296 tmo = get_wqe_tmo(cmdiocb);
3297 iotag = get_wqe_reqtag(cmdiocb);
3298 } else {
3299 irsp = &rspiocb->iocb;
3300 tmo = irsp->ulpTimeout;
3301 iotag = irsp->ulpIoTag;
3302 }
3303
3304 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
3305 "ELS cmd cmpl: status:x%x/x%x did:x%x",
3306 ulp_status, ulp_word4, did);
3307
3308 /* ELS cmd tag <ulpIoTag> completes */
3309 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
3310 "0106 ELS cmd tag x%x completes Data: x%x x%x x%x\n",
3311 iotag, ulp_status, ulp_word4, tmo);
3312
3313 /* Check to see if link went down during discovery */
3314 lpfc_els_chk_latt(vport);
3315
3316 free_ndlp = cmdiocb->ndlp;
3317
3318 lpfc_els_free_iocb(phba, cmdiocb);
3319 lpfc_nlp_put(free_ndlp);
3320}
3321
3322/**
3323 * lpfc_reg_fab_ctrl_node - RPI register the fabric controller node.
3324 * @vport: pointer to lpfc_vport data structure.
3325 * @fc_ndlp: pointer to the fabric controller (0xfffffd) node.
3326 *
3327 * This routine registers the rpi assigned to the fabric controller
3328 * NPort_ID (0xfffffd) with the port and moves the node to UNMAPPED
3329 * state triggering a registration with the SCSI transport.
3330 *
3331 * This routine is single out because the fabric controller node
3332 * does not receive a PLOGI. This routine is consumed by the
3333 * SCR and RDF ELS commands. Callers are expected to qualify
3334 * with SLI4 first.
3335 **/
3336static int
3337lpfc_reg_fab_ctrl_node(struct lpfc_vport *vport, struct lpfc_nodelist *fc_ndlp)
3338{
3339 int rc;
3340 struct lpfc_hba *phba = vport->phba;
3341 struct lpfc_nodelist *ns_ndlp;
3342 LPFC_MBOXQ_t *mbox;
3343
3344 if (test_bit(NLP_RPI_REGISTERED, &fc_ndlp->nlp_flag))
3345 return 0;
3346
3347 ns_ndlp = lpfc_findnode_did(vport, NameServer_DID);
3348 if (!ns_ndlp)
3349 return -ENODEV;
3350
3351 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
3352 "0935 %s: Reg FC RPI x%x on FC DID x%x NSSte: x%x\n",
3353 __func__, fc_ndlp->nlp_rpi, fc_ndlp->nlp_DID,
3354 ns_ndlp->nlp_state);
3355 if (ns_ndlp->nlp_state != NLP_STE_UNMAPPED_NODE)
3356 return -ENODEV;
3357
3358 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
3359 if (!mbox) {
3360 lpfc_printf_vlog(vport, KERN_ERR, LOG_NODE,
3361 "0936 %s: no memory for reg_login "
3362 "Data: x%x x%x x%lx x%x\n", __func__,
3363 fc_ndlp->nlp_DID, fc_ndlp->nlp_state,
3364 fc_ndlp->nlp_flag, fc_ndlp->nlp_rpi);
3365 return -ENOMEM;
3366 }
3367 rc = lpfc_reg_rpi(phba, vport->vpi, fc_ndlp->nlp_DID,
3368 (u8 *)&ns_ndlp->fc_sparam, mbox, fc_ndlp->nlp_rpi);
3369 if (rc) {
3370 rc = -EACCES;
3371 goto out;
3372 }
3373
3374 set_bit(NLP_REG_LOGIN_SEND, &fc_ndlp->nlp_flag);
3375 mbox->mbox_cmpl = lpfc_mbx_cmpl_fc_reg_login;
3376 mbox->ctx_ndlp = lpfc_nlp_get(fc_ndlp);
3377 if (!mbox->ctx_ndlp) {
3378 rc = -ENOMEM;
3379 goto out;
3380 }
3381
3382 mbox->vport = vport;
3383 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
3384 if (rc == MBX_NOT_FINISHED) {
3385 rc = -ENODEV;
3386 lpfc_nlp_put(fc_ndlp);
3387 goto out;
3388 }
3389 /* Success path. Exit. */
3390 lpfc_nlp_set_state(vport, fc_ndlp,
3391 NLP_STE_REG_LOGIN_ISSUE);
3392 return 0;
3393
3394 out:
3395 lpfc_mbox_rsrc_cleanup(phba, mbox, MBOX_THD_UNLOCKED);
3396 lpfc_printf_vlog(vport, KERN_ERR, LOG_NODE,
3397 "0938 %s: failed to format reg_login "
3398 "Data: x%x x%x x%lx x%x\n", __func__,
3399 fc_ndlp->nlp_DID, fc_ndlp->nlp_state,
3400 fc_ndlp->nlp_flag, fc_ndlp->nlp_rpi);
3401 return rc;
3402}
3403
3404/**
3405 * lpfc_cmpl_els_disc_cmd - Completion callback function for Discovery ELS cmd
3406 * @phba: pointer to lpfc hba data structure.
3407 * @cmdiocb: pointer to lpfc command iocb data structure.
3408 * @rspiocb: pointer to lpfc response iocb data structure.
3409 *
3410 * This routine is a generic completion callback function for Discovery ELS cmd.
3411 * Currently used by the ELS command issuing routines for the ELS State Change
3412 * Request (SCR), lpfc_issue_els_scr(), Exchange Diagnostic Capabilities (EDC),
3413 * lpfc_issue_els_edc() and the ELS RDF, lpfc_issue_els_rdf().
3414 * These commands will be retried once only for ELS timeout errors.
3415 **/
3416static void
3417lpfc_cmpl_els_disc_cmd(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
3418 struct lpfc_iocbq *rspiocb)
3419{
3420 struct lpfc_vport *vport = cmdiocb->vport;
3421 IOCB_t *irsp;
3422 struct lpfc_els_rdf_rsp *prdf;
3423 struct lpfc_dmabuf *pcmd, *prsp;
3424 u32 *pdata;
3425 u32 cmd;
3426 struct lpfc_nodelist *ndlp = cmdiocb->ndlp;
3427 u32 ulp_status, ulp_word4, tmo, did, iotag;
3428
3429 ulp_status = get_job_ulpstatus(phba, rspiocb);
3430 ulp_word4 = get_job_word4(phba, rspiocb);
3431 did = get_job_els_rsp64_did(phba, cmdiocb);
3432
3433 if (phba->sli_rev == LPFC_SLI_REV4) {
3434 tmo = get_wqe_tmo(cmdiocb);
3435 iotag = get_wqe_reqtag(cmdiocb);
3436 } else {
3437 irsp = &rspiocb->iocb;
3438 tmo = irsp->ulpTimeout;
3439 iotag = irsp->ulpIoTag;
3440 }
3441
3442 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
3443 "ELS cmd cmpl: status:x%x/x%x did:x%x",
3444 ulp_status, ulp_word4, did);
3445
3446 /* ELS cmd tag <ulpIoTag> completes */
3447 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS | LOG_CGN_MGMT,
3448 "0217 ELS cmd tag x%x completes Data: x%x x%x x%x x%x\n",
3449 iotag, ulp_status, ulp_word4, tmo, cmdiocb->retry);
3450
3451 pcmd = cmdiocb->cmd_dmabuf;
3452 if (!pcmd)
3453 goto out;
3454
3455 pdata = (u32 *)pcmd->virt;
3456 if (!pdata)
3457 goto out;
3458 cmd = *pdata;
3459
3460 /* Only 1 retry for ELS Timeout only */
3461 if (ulp_status == IOSTAT_LOCAL_REJECT &&
3462 ((ulp_word4 & IOERR_PARAM_MASK) ==
3463 IOERR_SEQUENCE_TIMEOUT)) {
3464 cmdiocb->retry++;
3465 if (cmdiocb->retry <= 1) {
3466 switch (cmd) {
3467 case ELS_CMD_SCR:
3468 lpfc_issue_els_scr(vport, cmdiocb->retry);
3469 break;
3470 case ELS_CMD_EDC:
3471 lpfc_issue_els_edc(vport, cmdiocb->retry);
3472 break;
3473 case ELS_CMD_RDF:
3474 lpfc_issue_els_rdf(vport, cmdiocb->retry);
3475 break;
3476 }
3477 goto out;
3478 }
3479 phba->fc_stat.elsRetryExceeded++;
3480 }
3481 if (cmd == ELS_CMD_EDC) {
3482 /* must be called before checking uplStatus and returning */
3483 lpfc_cmpl_els_edc(phba, cmdiocb, rspiocb);
3484 return;
3485 }
3486
3487 if (ulp_status) {
3488 /* ELS discovery cmd completes with error */
3489 lpfc_printf_vlog(vport, KERN_WARNING, LOG_ELS | LOG_CGN_MGMT,
3490 "4203 ELS cmd x%x error: x%x x%X\n", cmd,
3491 ulp_status, ulp_word4);
3492
3493 /* In the case where the ELS cmd completes with an error and
3494 * the node does not have RPI registered, the node is
3495 * outstanding and should put its initial reference.
3496 */
3497 if ((cmd == ELS_CMD_SCR || cmd == ELS_CMD_RDF) &&
3498 !(ndlp->fc4_xpt_flags & SCSI_XPT_REGD) &&
3499 !test_and_set_bit(NLP_DROPPED, &ndlp->nlp_flag))
3500 lpfc_nlp_put(ndlp);
3501 goto out;
3502 }
3503
3504 /* The RDF response doesn't have any impact on the running driver
3505 * but the notification descriptors are dumped here for support.
3506 */
3507 if (cmd == ELS_CMD_RDF) {
3508 int i;
3509
3510 prsp = list_get_first(&pcmd->list, struct lpfc_dmabuf, list);
3511 if (!prsp)
3512 goto out;
3513
3514 prdf = (struct lpfc_els_rdf_rsp *)prsp->virt;
3515 if (!prdf)
3516 goto out;
3517 if (!lpfc_is_els_acc_rsp(prsp))
3518 goto out;
3519
3520 for (i = 0; i < ELS_RDF_REG_TAG_CNT &&
3521 i < be32_to_cpu(prdf->reg_d1.reg_desc.count); i++)
3522 lpfc_printf_vlog(vport, KERN_INFO,
3523 LOG_ELS | LOG_CGN_MGMT,
3524 "4677 Fabric RDF Notification Grant "
3525 "Data: 0x%08x Reg: %x %x\n",
3526 be32_to_cpu(
3527 prdf->reg_d1.desc_tags[i]),
3528 phba->cgn_reg_signal,
3529 phba->cgn_reg_fpin);
3530 }
3531
3532out:
3533 /* Check to see if link went down during discovery */
3534 lpfc_els_chk_latt(vport);
3535 lpfc_els_free_iocb(phba, cmdiocb);
3536 lpfc_nlp_put(ndlp);
3537 return;
3538}
3539
3540/**
3541 * lpfc_issue_els_scr - Issue a scr to an node on a vport
3542 * @vport: pointer to a host virtual N_Port data structure.
3543 * @retry: retry counter for the command IOCB.
3544 *
3545 * This routine issues a State Change Request (SCR) to a fabric node
3546 * on a @vport. The remote node is Fabric Controller (0xfffffd). It
3547 * first search the @vport node list to find the matching ndlp. If no such
3548 * ndlp is found, a new ndlp shall be created for this (SCR) purpose. An
3549 * IOCB is allocated, payload prepared, and the lpfc_sli_issue_iocb()
3550 * routine is invoked to send the SCR IOCB.
3551 *
3552 * Note that the ndlp reference count will be incremented by 1 for holding the
3553 * ndlp and the reference to ndlp will be stored into the ndlp field of
3554 * the IOCB for the completion callback function to the SCR ELS command.
3555 *
3556 * Return code
3557 * 0 - Successfully issued scr command
3558 * 1 - Failed to issue scr command
3559 **/
3560int
3561lpfc_issue_els_scr(struct lpfc_vport *vport, uint8_t retry)
3562{
3563 int rc = 0;
3564 struct lpfc_hba *phba = vport->phba;
3565 struct lpfc_iocbq *elsiocb;
3566 uint8_t *pcmd;
3567 uint16_t cmdsize;
3568 struct lpfc_nodelist *ndlp;
3569 bool node_created = false;
3570
3571 cmdsize = (sizeof(uint32_t) + sizeof(SCR));
3572
3573 ndlp = lpfc_findnode_did(vport, Fabric_Cntl_DID);
3574 if (!ndlp) {
3575 ndlp = lpfc_nlp_init(vport, Fabric_Cntl_DID);
3576 if (!ndlp)
3577 return 1;
3578 lpfc_enqueue_node(vport, ndlp);
3579 node_created = true;
3580 }
3581
3582 elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp,
3583 ndlp->nlp_DID, ELS_CMD_SCR);
3584 if (!elsiocb)
3585 goto out_node_created;
3586
3587 if (phba->sli_rev == LPFC_SLI_REV4) {
3588 rc = lpfc_reg_fab_ctrl_node(vport, ndlp);
3589 if (rc) {
3590 lpfc_printf_vlog(vport, KERN_ERR, LOG_NODE,
3591 "0937 %s: Failed to reg fc node, rc %d\n",
3592 __func__, rc);
3593 goto out_free_iocb;
3594 }
3595 }
3596 pcmd = (uint8_t *)elsiocb->cmd_dmabuf->virt;
3597
3598 *((uint32_t *) (pcmd)) = ELS_CMD_SCR;
3599 pcmd += sizeof(uint32_t);
3600
3601 /* For SCR, remainder of payload is SCR parameter page */
3602 memset(pcmd, 0, sizeof(SCR));
3603 ((SCR *) pcmd)->Function = SCR_FUNC_FULL;
3604
3605 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
3606 "Issue SCR: did:x%x",
3607 ndlp->nlp_DID, 0, 0);
3608
3609 phba->fc_stat.elsXmitSCR++;
3610 elsiocb->cmd_cmpl = lpfc_cmpl_els_disc_cmd;
3611 elsiocb->ndlp = lpfc_nlp_get(ndlp);
3612 if (!elsiocb->ndlp)
3613 goto out_free_iocb;
3614
3615 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
3616 "Issue SCR: did:x%x refcnt %d",
3617 ndlp->nlp_DID, kref_read(&ndlp->kref), 0);
3618
3619 rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
3620 if (rc == IOCB_ERROR)
3621 goto out_iocb_error;
3622
3623 return 0;
3624
3625out_iocb_error:
3626 lpfc_nlp_put(ndlp);
3627out_free_iocb:
3628 lpfc_els_free_iocb(phba, elsiocb);
3629out_node_created:
3630 if (node_created)
3631 lpfc_nlp_put(ndlp);
3632 return 1;
3633}
3634
3635/**
3636 * lpfc_issue_els_rscn - Issue an RSCN to the Fabric Controller (Fabric)
3637 * or the other nport (pt2pt).
3638 * @vport: pointer to a host virtual N_Port data structure.
3639 * @retry: number of retries to the command IOCB.
3640 *
3641 * This routine issues a RSCN to the Fabric Controller (DID 0xFFFFFD)
3642 * when connected to a fabric, or to the remote port when connected
3643 * in point-to-point mode. When sent to the Fabric Controller, it will
3644 * replay the RSCN to registered recipients.
3645 *
3646 * Note that the ndlp reference count will be incremented by 1 for holding the
3647 * ndlp and the reference to ndlp will be stored into the ndlp field of
3648 * the IOCB for the completion callback function to the RSCN ELS command.
3649 *
3650 * Return code
3651 * 0 - Successfully issued RSCN command
3652 * 1 - Failed to issue RSCN command
3653 **/
3654int
3655lpfc_issue_els_rscn(struct lpfc_vport *vport, uint8_t retry)
3656{
3657 int rc = 0;
3658 struct lpfc_hba *phba = vport->phba;
3659 struct lpfc_iocbq *elsiocb;
3660 struct lpfc_nodelist *ndlp;
3661 struct {
3662 struct fc_els_rscn rscn;
3663 struct fc_els_rscn_page portid;
3664 } *event;
3665 uint32_t nportid;
3666 uint16_t cmdsize = sizeof(*event);
3667
3668 /* Not supported for private loop */
3669 if (phba->fc_topology == LPFC_TOPOLOGY_LOOP &&
3670 !test_bit(FC_PUBLIC_LOOP, &vport->fc_flag))
3671 return 1;
3672
3673 if (test_bit(FC_PT2PT, &vport->fc_flag)) {
3674 /* find any mapped nport - that would be the other nport */
3675 ndlp = lpfc_findnode_mapped(vport);
3676 if (!ndlp)
3677 return 1;
3678 } else {
3679 nportid = FC_FID_FCTRL;
3680 /* find the fabric controller node */
3681 ndlp = lpfc_findnode_did(vport, nportid);
3682 if (!ndlp) {
3683 /* if one didn't exist, make one */
3684 ndlp = lpfc_nlp_init(vport, nportid);
3685 if (!ndlp)
3686 return 1;
3687 lpfc_enqueue_node(vport, ndlp);
3688 }
3689 }
3690
3691 elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp,
3692 ndlp->nlp_DID, ELS_CMD_RSCN_XMT);
3693
3694 if (!elsiocb)
3695 return 1;
3696
3697 event = elsiocb->cmd_dmabuf->virt;
3698
3699 event->rscn.rscn_cmd = ELS_RSCN;
3700 event->rscn.rscn_page_len = sizeof(struct fc_els_rscn_page);
3701 event->rscn.rscn_plen = cpu_to_be16(cmdsize);
3702
3703 nportid = vport->fc_myDID;
3704 /* appears that page flags must be 0 for fabric to broadcast RSCN */
3705 event->portid.rscn_page_flags = 0;
3706 event->portid.rscn_fid[0] = (nportid & 0x00FF0000) >> 16;
3707 event->portid.rscn_fid[1] = (nportid & 0x0000FF00) >> 8;
3708 event->portid.rscn_fid[2] = nportid & 0x000000FF;
3709
3710 phba->fc_stat.elsXmitRSCN++;
3711 elsiocb->cmd_cmpl = lpfc_cmpl_els_cmd;
3712 elsiocb->ndlp = lpfc_nlp_get(ndlp);
3713 if (!elsiocb->ndlp) {
3714 lpfc_els_free_iocb(phba, elsiocb);
3715 return 1;
3716 }
3717
3718 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
3719 "Issue RSCN: did:x%x refcnt %d",
3720 ndlp->nlp_DID, kref_read(&ndlp->kref), 0);
3721
3722 rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
3723 if (rc == IOCB_ERROR) {
3724 lpfc_els_free_iocb(phba, elsiocb);
3725 lpfc_nlp_put(ndlp);
3726 return 1;
3727 }
3728
3729 return 0;
3730}
3731
3732/**
3733 * lpfc_issue_els_farpr - Issue a farp to an node on a vport
3734 * @vport: pointer to a host virtual N_Port data structure.
3735 * @nportid: N_Port identifier to the remote node.
3736 * @retry: number of retries to the command IOCB.
3737 *
3738 * This routine issues a Fibre Channel Address Resolution Response
3739 * (FARPR) to a node on a vport. The remote node N_Port identifier (@nportid)
3740 * is passed into the function. It first search the @vport node list to find
3741 * the matching ndlp. If no such ndlp is found, a new ndlp shall be created
3742 * for this (FARPR) purpose. An IOCB is allocated, payload prepared, and the
3743 * lpfc_sli_issue_iocb() routine is invoked to send the FARPR ELS command.
3744 *
3745 * Note that the ndlp reference count will be incremented by 1 for holding the
3746 * ndlp and the reference to ndlp will be stored into the ndlp field of
3747 * the IOCB for the completion callback function to the FARPR ELS command.
3748 *
3749 * Return code
3750 * 0 - Successfully issued farpr command
3751 * 1 - Failed to issue farpr command
3752 **/
3753static int
3754lpfc_issue_els_farpr(struct lpfc_vport *vport, uint32_t nportid, uint8_t retry)
3755{
3756 int rc = 0;
3757 struct lpfc_hba *phba = vport->phba;
3758 struct lpfc_iocbq *elsiocb;
3759 FARP *fp;
3760 uint8_t *pcmd;
3761 uint32_t *lp;
3762 uint16_t cmdsize;
3763 struct lpfc_nodelist *ondlp;
3764 struct lpfc_nodelist *ndlp;
3765
3766 cmdsize = (sizeof(uint32_t) + sizeof(FARP));
3767
3768 ndlp = lpfc_findnode_did(vport, nportid);
3769 if (!ndlp) {
3770 ndlp = lpfc_nlp_init(vport, nportid);
3771 if (!ndlp)
3772 return 1;
3773 lpfc_enqueue_node(vport, ndlp);
3774 }
3775
3776 elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp,
3777 ndlp->nlp_DID, ELS_CMD_FARPR);
3778 if (!elsiocb)
3779 return 1;
3780
3781 pcmd = (uint8_t *)elsiocb->cmd_dmabuf->virt;
3782
3783 *((uint32_t *) (pcmd)) = ELS_CMD_FARPR;
3784 pcmd += sizeof(uint32_t);
3785
3786 /* Fill in FARPR payload */
3787 fp = (FARP *) (pcmd);
3788 memset(fp, 0, sizeof(FARP));
3789 lp = (uint32_t *) pcmd;
3790 *lp++ = be32_to_cpu(nportid);
3791 *lp++ = be32_to_cpu(vport->fc_myDID);
3792 fp->Rflags = 0;
3793 fp->Mflags = (FARP_MATCH_PORT | FARP_MATCH_NODE);
3794
3795 memcpy(&fp->RportName, &vport->fc_portname, sizeof(struct lpfc_name));
3796 memcpy(&fp->RnodeName, &vport->fc_nodename, sizeof(struct lpfc_name));
3797 ondlp = lpfc_findnode_did(vport, nportid);
3798 if (ondlp) {
3799 memcpy(&fp->OportName, &ondlp->nlp_portname,
3800 sizeof(struct lpfc_name));
3801 memcpy(&fp->OnodeName, &ondlp->nlp_nodename,
3802 sizeof(struct lpfc_name));
3803 }
3804
3805 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
3806 "Issue FARPR: did:x%x",
3807 ndlp->nlp_DID, 0, 0);
3808
3809 phba->fc_stat.elsXmitFARPR++;
3810 elsiocb->cmd_cmpl = lpfc_cmpl_els_cmd;
3811 elsiocb->ndlp = lpfc_nlp_get(ndlp);
3812 if (!elsiocb->ndlp) {
3813 lpfc_els_free_iocb(phba, elsiocb);
3814 return 1;
3815 }
3816
3817 rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
3818 if (rc == IOCB_ERROR) {
3819 /* The additional lpfc_nlp_put will cause the following
3820 * lpfc_els_free_iocb routine to trigger the release of
3821 * the node.
3822 */
3823 lpfc_els_free_iocb(phba, elsiocb);
3824 lpfc_nlp_put(ndlp);
3825 return 1;
3826 }
3827
3828 return 0;
3829}
3830
3831/**
3832 * lpfc_issue_els_rdf - Register for diagnostic functions from the fabric.
3833 * @vport: pointer to a host virtual N_Port data structure.
3834 * @retry: retry counter for the command IOCB.
3835 *
3836 * This routine issues an ELS RDF to the Fabric Controller to register
3837 * for diagnostic functions.
3838 *
3839 * Note that the ndlp reference count will be incremented by 1 for holding the
3840 * ndlp and the reference to ndlp will be stored into the ndlp field of
3841 * the IOCB for the completion callback function to the RDF ELS command.
3842 *
3843 * Return code
3844 * 0 - Successfully issued rdf command
3845 * < 0 - Failed to issue rdf command
3846 * -EACCES - RDF not required for NPIV_PORT
3847 * -ENODEV - No fabric controller device available
3848 * -ENOMEM - No available memory
3849 * -EIO - The mailbox failed to complete successfully.
3850 *
3851 **/
3852int
3853lpfc_issue_els_rdf(struct lpfc_vport *vport, uint8_t retry)
3854{
3855 struct lpfc_hba *phba = vport->phba;
3856 struct lpfc_iocbq *elsiocb;
3857 struct lpfc_els_rdf_req *prdf;
3858 struct lpfc_nodelist *ndlp;
3859 uint16_t cmdsize;
3860 int rc;
3861 bool node_created = false;
3862 int err;
3863
3864 cmdsize = sizeof(*prdf);
3865
3866 /* RDF ELS is not required on an NPIV VN_Port. */
3867 if (vport->port_type == LPFC_NPIV_PORT)
3868 return -EACCES;
3869
3870 ndlp = lpfc_findnode_did(vport, Fabric_Cntl_DID);
3871 if (!ndlp) {
3872 ndlp = lpfc_nlp_init(vport, Fabric_Cntl_DID);
3873 if (!ndlp)
3874 return -ENODEV;
3875 lpfc_enqueue_node(vport, ndlp);
3876 node_created = true;
3877 }
3878
3879 elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp,
3880 ndlp->nlp_DID, ELS_CMD_RDF);
3881 if (!elsiocb) {
3882 err = -ENOMEM;
3883 goto out_node_created;
3884 }
3885
3886 /* Configure the payload for the supported FPIN events. */
3887 prdf = (struct lpfc_els_rdf_req *)elsiocb->cmd_dmabuf->virt;
3888 memset(prdf, 0, cmdsize);
3889 prdf->rdf.fpin_cmd = ELS_RDF;
3890 prdf->rdf.desc_len = cpu_to_be32(sizeof(struct lpfc_els_rdf_req) -
3891 sizeof(struct fc_els_rdf_hdr));
3892 prdf->reg_d1.reg_desc.desc_tag = cpu_to_be32(ELS_DTAG_FPIN_REGISTER);
3893 prdf->reg_d1.reg_desc.desc_len = cpu_to_be32(
3894 FC_TLV_DESC_LENGTH_FROM_SZ(prdf->reg_d1));
3895 prdf->reg_d1.reg_desc.count = cpu_to_be32(ELS_RDF_REG_TAG_CNT);
3896 prdf->reg_d1.desc_tags[0] = cpu_to_be32(ELS_DTAG_LNK_INTEGRITY);
3897 prdf->reg_d1.desc_tags[1] = cpu_to_be32(ELS_DTAG_DELIVERY);
3898 prdf->reg_d1.desc_tags[2] = cpu_to_be32(ELS_DTAG_PEER_CONGEST);
3899 prdf->reg_d1.desc_tags[3] = cpu_to_be32(ELS_DTAG_CONGESTION);
3900
3901 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS | LOG_CGN_MGMT,
3902 "6444 Xmit RDF to remote NPORT x%x Reg: %x %x\n",
3903 ndlp->nlp_DID, phba->cgn_reg_signal,
3904 phba->cgn_reg_fpin);
3905
3906 phba->cgn_fpin_frequency = LPFC_FPIN_INIT_FREQ;
3907 elsiocb->cmd_cmpl = lpfc_cmpl_els_disc_cmd;
3908 elsiocb->ndlp = lpfc_nlp_get(ndlp);
3909 if (!elsiocb->ndlp) {
3910 err = -EIO;
3911 goto out_free_iocb;
3912 }
3913
3914 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
3915 "Issue RDF: did:x%x refcnt %d",
3916 ndlp->nlp_DID, kref_read(&ndlp->kref), 0);
3917
3918 rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
3919 if (rc == IOCB_ERROR) {
3920 err = -EIO;
3921 goto out_iocb_error;
3922 }
3923 return 0;
3924
3925out_iocb_error:
3926 lpfc_nlp_put(ndlp);
3927out_free_iocb:
3928 lpfc_els_free_iocb(phba, elsiocb);
3929out_node_created:
3930 if (node_created)
3931 lpfc_nlp_put(ndlp);
3932 return err;
3933}
3934
3935 /**
3936 * lpfc_els_rcv_rdf - Receive RDF ELS request from the fabric.
3937 * @vport: pointer to a host virtual N_Port data structure.
3938 * @cmdiocb: pointer to lpfc command iocb data structure.
3939 * @ndlp: pointer to a node-list data structure.
3940 *
3941 * A received RDF implies a possible change to fabric supported diagnostic
3942 * functions. This routine sends LS_ACC and then has the Nx_Port issue a new
3943 * RDF request to reregister for supported diagnostic functions.
3944 *
3945 * Return code
3946 * 0 - Success
3947 * -EIO - Failed to process received RDF
3948 **/
3949static int
3950lpfc_els_rcv_rdf(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
3951 struct lpfc_nodelist *ndlp)
3952{
3953 int rc;
3954
3955 rc = lpfc_els_rsp_acc(vport, ELS_CMD_RDF, cmdiocb, ndlp, NULL);
3956 /* Send LS_ACC */
3957 if (rc) {
3958 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS | LOG_CGN_MGMT,
3959 "1623 Failed to RDF_ACC from x%x for x%x Data: %d\n",
3960 ndlp->nlp_DID, vport->fc_myDID, rc);
3961 return -EIO;
3962 }
3963
3964 rc = lpfc_issue_els_rdf(vport, 0);
3965 /* Issue new RDF for reregistering */
3966 if (rc) {
3967 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS | LOG_CGN_MGMT,
3968 "2623 Failed to re register RDF for x%x Data: %d\n",
3969 vport->fc_myDID, rc);
3970 return -EIO;
3971 }
3972
3973 return 0;
3974}
3975
3976/**
3977 * lpfc_least_capable_settings - helper function for EDC rsp processing
3978 * @phba: pointer to lpfc hba data structure.
3979 * @pcgd: pointer to congestion detection descriptor in EDC rsp.
3980 *
3981 * This helper routine determines the least capable setting for
3982 * congestion signals, signal freq, including scale, from the
3983 * congestion detection descriptor in the EDC rsp. The routine
3984 * sets @phba values in preparation for a set_featues mailbox.
3985 **/
3986static void
3987lpfc_least_capable_settings(struct lpfc_hba *phba,
3988 struct fc_diag_cg_sig_desc *pcgd)
3989{
3990 u32 rsp_sig_cap = 0, drv_sig_cap = 0;
3991 u32 rsp_sig_freq_cyc = 0, rsp_sig_freq_scale = 0;
3992
3993 /* Get rsp signal and frequency capabilities. */
3994 rsp_sig_cap = be32_to_cpu(pcgd->xmt_signal_capability);
3995 rsp_sig_freq_cyc = be16_to_cpu(pcgd->xmt_signal_frequency.count);
3996 rsp_sig_freq_scale = be16_to_cpu(pcgd->xmt_signal_frequency.units);
3997
3998 /* If the Fport does not support signals. Set FPIN only */
3999 if (rsp_sig_cap == EDC_CG_SIG_NOTSUPPORTED)
4000 goto out_no_support;
4001
4002 /* Apply the xmt scale to the xmt cycle to get the correct frequency.
4003 * Adapter default is 100 millisSeconds. Convert all xmt cycle values
4004 * to milliSeconds.
4005 */
4006 switch (rsp_sig_freq_scale) {
4007 case EDC_CG_SIGFREQ_SEC:
4008 rsp_sig_freq_cyc *= MSEC_PER_SEC;
4009 break;
4010 case EDC_CG_SIGFREQ_MSEC:
4011 rsp_sig_freq_cyc = 1;
4012 break;
4013 default:
4014 goto out_no_support;
4015 }
4016
4017 /* Convenient shorthand. */
4018 drv_sig_cap = phba->cgn_reg_signal;
4019
4020 /* Choose the least capable frequency. */
4021 if (rsp_sig_freq_cyc > phba->cgn_sig_freq)
4022 phba->cgn_sig_freq = rsp_sig_freq_cyc;
4023
4024 /* Should be some common signals support. Settle on least capable
4025 * signal and adjust FPIN values. Initialize defaults to ease the
4026 * decision.
4027 */
4028 phba->cgn_reg_fpin = LPFC_CGN_FPIN_WARN | LPFC_CGN_FPIN_ALARM;
4029 phba->cgn_reg_signal = EDC_CG_SIG_NOTSUPPORTED;
4030 if (rsp_sig_cap == EDC_CG_SIG_WARN_ONLY &&
4031 (drv_sig_cap == EDC_CG_SIG_WARN_ONLY ||
4032 drv_sig_cap == EDC_CG_SIG_WARN_ALARM)) {
4033 phba->cgn_reg_signal = EDC_CG_SIG_WARN_ONLY;
4034 phba->cgn_reg_fpin &= ~LPFC_CGN_FPIN_WARN;
4035 }
4036 if (rsp_sig_cap == EDC_CG_SIG_WARN_ALARM) {
4037 if (drv_sig_cap == EDC_CG_SIG_WARN_ALARM) {
4038 phba->cgn_reg_signal = EDC_CG_SIG_WARN_ALARM;
4039 phba->cgn_reg_fpin = LPFC_CGN_FPIN_NONE;
4040 }
4041 if (drv_sig_cap == EDC_CG_SIG_WARN_ONLY) {
4042 phba->cgn_reg_signal = EDC_CG_SIG_WARN_ONLY;
4043 phba->cgn_reg_fpin &= ~LPFC_CGN_FPIN_WARN;
4044 }
4045 }
4046
4047 /* We are NOT recording signal frequency in congestion info buffer */
4048 return;
4049
4050out_no_support:
4051 phba->cgn_reg_signal = EDC_CG_SIG_NOTSUPPORTED;
4052 phba->cgn_sig_freq = 0;
4053 phba->cgn_reg_fpin = LPFC_CGN_FPIN_ALARM | LPFC_CGN_FPIN_WARN;
4054}
4055
4056DECLARE_ENUM2STR_LOOKUP(lpfc_get_tlv_dtag_nm, fc_ls_tlv_dtag,
4057 FC_LS_TLV_DTAG_INIT);
4058
4059/**
4060 * lpfc_cmpl_els_edc - Completion callback function for EDC
4061 * @phba: pointer to lpfc hba data structure.
4062 * @cmdiocb: pointer to lpfc command iocb data structure.
4063 * @rspiocb: pointer to lpfc response iocb data structure.
4064 *
4065 * This routine is the completion callback function for issuing the Exchange
4066 * Diagnostic Capabilities (EDC) command. The driver issues an EDC to
4067 * notify the FPort of its Congestion and Link Fault capabilities. This
4068 * routine parses the FPort's response and decides on the least common
4069 * values applicable to both FPort and NPort for Warnings and Alarms that
4070 * are communicated via hardware signals.
4071 **/
4072static void
4073lpfc_cmpl_els_edc(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
4074 struct lpfc_iocbq *rspiocb)
4075{
4076 IOCB_t *irsp_iocb;
4077 struct fc_els_edc_resp *edc_rsp;
4078 struct fc_tlv_desc *tlv;
4079 struct fc_diag_cg_sig_desc *pcgd;
4080 struct fc_diag_lnkflt_desc *plnkflt;
4081 struct lpfc_dmabuf *pcmd, *prsp;
4082 const char *dtag_nm;
4083 u32 *pdata, dtag;
4084 int desc_cnt = 0, bytes_remain;
4085 bool rcv_cap_desc = false;
4086 struct lpfc_nodelist *ndlp;
4087 u32 ulp_status, ulp_word4, tmo, did, iotag;
4088
4089 ndlp = cmdiocb->ndlp;
4090
4091 ulp_status = get_job_ulpstatus(phba, rspiocb);
4092 ulp_word4 = get_job_word4(phba, rspiocb);
4093 did = get_job_els_rsp64_did(phba, rspiocb);
4094
4095 if (phba->sli_rev == LPFC_SLI_REV4) {
4096 tmo = get_wqe_tmo(rspiocb);
4097 iotag = get_wqe_reqtag(rspiocb);
4098 } else {
4099 irsp_iocb = &rspiocb->iocb;
4100 tmo = irsp_iocb->ulpTimeout;
4101 iotag = irsp_iocb->ulpIoTag;
4102 }
4103
4104 lpfc_debugfs_disc_trc(phba->pport, LPFC_DISC_TRC_ELS_CMD,
4105 "EDC cmpl: status:x%x/x%x did:x%x",
4106 ulp_status, ulp_word4, did);
4107
4108 /* ELS cmd tag <ulpIoTag> completes */
4109 lpfc_printf_log(phba, KERN_INFO, LOG_ELS | LOG_CGN_MGMT,
4110 "4201 EDC cmd tag x%x completes Data: x%x x%x x%x\n",
4111 iotag, ulp_status, ulp_word4, tmo);
4112
4113 pcmd = cmdiocb->cmd_dmabuf;
4114 if (!pcmd)
4115 goto out;
4116
4117 pdata = (u32 *)pcmd->virt;
4118 if (!pdata)
4119 goto out;
4120
4121 /* Need to clear signal values, send features MB and RDF with FPIN. */
4122 if (ulp_status)
4123 goto out;
4124
4125 prsp = list_get_first(&pcmd->list, struct lpfc_dmabuf, list);
4126 if (!prsp)
4127 goto out;
4128
4129 edc_rsp = prsp->virt;
4130 if (!edc_rsp)
4131 goto out;
4132
4133 /* ELS cmd tag <ulpIoTag> completes */
4134 lpfc_printf_log(phba, KERN_INFO,
4135 LOG_ELS | LOG_CGN_MGMT | LOG_LDS_EVENT,
4136 "4676 Fabric EDC Rsp: "
4137 "0x%02x, 0x%08x\n",
4138 edc_rsp->acc_hdr.la_cmd,
4139 be32_to_cpu(edc_rsp->desc_list_len));
4140
4141 if (!lpfc_is_els_acc_rsp(prsp))
4142 goto out;
4143
4144 /*
4145 * Payload length in bytes is the response descriptor list
4146 * length minus the 12 bytes of Link Service Request
4147 * Information descriptor in the reply.
4148 */
4149 bytes_remain = be32_to_cpu(edc_rsp->desc_list_len) -
4150 sizeof(struct fc_els_lsri_desc);
4151 if (bytes_remain <= 0)
4152 goto out;
4153
4154 tlv = edc_rsp->desc;
4155
4156 /*
4157 * cycle through EDC diagnostic descriptors to find the
4158 * congestion signaling capability descriptor
4159 */
4160 while (bytes_remain) {
4161 if (bytes_remain < FC_TLV_DESC_HDR_SZ) {
4162 lpfc_printf_log(phba, KERN_WARNING, LOG_CGN_MGMT,
4163 "6461 Truncated TLV hdr on "
4164 "Diagnostic descriptor[%d]\n",
4165 desc_cnt);
4166 goto out;
4167 }
4168
4169 dtag = be32_to_cpu(tlv->desc_tag);
4170 switch (dtag) {
4171 case ELS_DTAG_LNK_FAULT_CAP:
4172 if (bytes_remain < FC_TLV_DESC_SZ_FROM_LENGTH(tlv) ||
4173 FC_TLV_DESC_SZ_FROM_LENGTH(tlv) !=
4174 sizeof(struct fc_diag_lnkflt_desc)) {
4175 lpfc_printf_log(phba, KERN_WARNING,
4176 LOG_ELS | LOG_CGN_MGMT | LOG_LDS_EVENT,
4177 "6462 Truncated Link Fault Diagnostic "
4178 "descriptor[%d]: %d vs 0x%zx 0x%zx\n",
4179 desc_cnt, bytes_remain,
4180 FC_TLV_DESC_SZ_FROM_LENGTH(tlv),
4181 sizeof(struct fc_diag_lnkflt_desc));
4182 goto out;
4183 }
4184 plnkflt = (struct fc_diag_lnkflt_desc *)tlv;
4185 lpfc_printf_log(phba, KERN_INFO,
4186 LOG_ELS | LOG_LDS_EVENT,
4187 "4617 Link Fault Desc Data: 0x%08x 0x%08x "
4188 "0x%08x 0x%08x 0x%08x\n",
4189 be32_to_cpu(plnkflt->desc_tag),
4190 be32_to_cpu(plnkflt->desc_len),
4191 be32_to_cpu(
4192 plnkflt->degrade_activate_threshold),
4193 be32_to_cpu(
4194 plnkflt->degrade_deactivate_threshold),
4195 be32_to_cpu(plnkflt->fec_degrade_interval));
4196 break;
4197 case ELS_DTAG_CG_SIGNAL_CAP:
4198 if (bytes_remain < FC_TLV_DESC_SZ_FROM_LENGTH(tlv) ||
4199 FC_TLV_DESC_SZ_FROM_LENGTH(tlv) !=
4200 sizeof(struct fc_diag_cg_sig_desc)) {
4201 lpfc_printf_log(
4202 phba, KERN_WARNING, LOG_CGN_MGMT,
4203 "6463 Truncated Cgn Signal Diagnostic "
4204 "descriptor[%d]: %d vs 0x%zx 0x%zx\n",
4205 desc_cnt, bytes_remain,
4206 FC_TLV_DESC_SZ_FROM_LENGTH(tlv),
4207 sizeof(struct fc_diag_cg_sig_desc));
4208 goto out;
4209 }
4210
4211 pcgd = (struct fc_diag_cg_sig_desc *)tlv;
4212 lpfc_printf_log(
4213 phba, KERN_INFO, LOG_ELS | LOG_CGN_MGMT,
4214 "4616 CGN Desc Data: 0x%08x 0x%08x "
4215 "0x%08x 0x%04x 0x%04x 0x%08x 0x%04x 0x%04x\n",
4216 be32_to_cpu(pcgd->desc_tag),
4217 be32_to_cpu(pcgd->desc_len),
4218 be32_to_cpu(pcgd->xmt_signal_capability),
4219 be16_to_cpu(pcgd->xmt_signal_frequency.count),
4220 be16_to_cpu(pcgd->xmt_signal_frequency.units),
4221 be32_to_cpu(pcgd->rcv_signal_capability),
4222 be16_to_cpu(pcgd->rcv_signal_frequency.count),
4223 be16_to_cpu(pcgd->rcv_signal_frequency.units));
4224
4225 /* Compare driver and Fport capabilities and choose
4226 * least common.
4227 */
4228 lpfc_least_capable_settings(phba, pcgd);
4229 rcv_cap_desc = true;
4230 break;
4231 default:
4232 dtag_nm = lpfc_get_tlv_dtag_nm(dtag);
4233 lpfc_printf_log(phba, KERN_WARNING, LOG_CGN_MGMT,
4234 "4919 unknown Diagnostic "
4235 "Descriptor[%d]: tag x%x (%s)\n",
4236 desc_cnt, dtag, dtag_nm);
4237 }
4238
4239 bytes_remain -= FC_TLV_DESC_SZ_FROM_LENGTH(tlv);
4240 tlv = fc_tlv_next_desc(tlv);
4241 desc_cnt++;
4242 }
4243
4244out:
4245 if (!rcv_cap_desc) {
4246 phba->cgn_reg_fpin = LPFC_CGN_FPIN_ALARM | LPFC_CGN_FPIN_WARN;
4247 phba->cgn_reg_signal = EDC_CG_SIG_NOTSUPPORTED;
4248 phba->cgn_sig_freq = 0;
4249 lpfc_printf_log(phba, KERN_WARNING, LOG_ELS | LOG_CGN_MGMT,
4250 "4202 EDC rsp error - sending RDF "
4251 "for FPIN only.\n");
4252 }
4253
4254 lpfc_config_cgn_signal(phba);
4255
4256 /* Check to see if link went down during discovery */
4257 lpfc_els_chk_latt(phba->pport);
4258 lpfc_debugfs_disc_trc(phba->pport, LPFC_DISC_TRC_ELS_CMD,
4259 "EDC Cmpl: did:x%x refcnt %d",
4260 ndlp->nlp_DID, kref_read(&ndlp->kref), 0);
4261 lpfc_els_free_iocb(phba, cmdiocb);
4262 lpfc_nlp_put(ndlp);
4263}
4264
4265static void
4266lpfc_format_edc_lft_desc(struct lpfc_hba *phba, struct fc_tlv_desc *tlv)
4267{
4268 struct fc_diag_lnkflt_desc *lft = (struct fc_diag_lnkflt_desc *)tlv;
4269
4270 lft->desc_tag = cpu_to_be32(ELS_DTAG_LNK_FAULT_CAP);
4271 lft->desc_len = cpu_to_be32(
4272 FC_TLV_DESC_LENGTH_FROM_SZ(struct fc_diag_lnkflt_desc));
4273
4274 lft->degrade_activate_threshold =
4275 cpu_to_be32(phba->degrade_activate_threshold);
4276 lft->degrade_deactivate_threshold =
4277 cpu_to_be32(phba->degrade_deactivate_threshold);
4278 lft->fec_degrade_interval = cpu_to_be32(phba->fec_degrade_interval);
4279}
4280
4281static void
4282lpfc_format_edc_cgn_desc(struct lpfc_hba *phba, struct fc_tlv_desc *tlv)
4283{
4284 struct fc_diag_cg_sig_desc *cgd = (struct fc_diag_cg_sig_desc *)tlv;
4285
4286 /* We are assuming cgd was zero'ed before calling this routine */
4287
4288 /* Configure the congestion detection capability */
4289 cgd->desc_tag = cpu_to_be32(ELS_DTAG_CG_SIGNAL_CAP);
4290
4291 /* Descriptor len doesn't include the tag or len fields. */
4292 cgd->desc_len = cpu_to_be32(
4293 FC_TLV_DESC_LENGTH_FROM_SZ(struct fc_diag_cg_sig_desc));
4294
4295 /* xmt_signal_capability already set to EDC_CG_SIG_NOTSUPPORTED.
4296 * xmt_signal_frequency.count already set to 0.
4297 * xmt_signal_frequency.units already set to 0.
4298 */
4299
4300 if (phba->cmf_active_mode == LPFC_CFG_OFF) {
4301 /* rcv_signal_capability already set to EDC_CG_SIG_NOTSUPPORTED.
4302 * rcv_signal_frequency.count already set to 0.
4303 * rcv_signal_frequency.units already set to 0.
4304 */
4305 phba->cgn_sig_freq = 0;
4306 return;
4307 }
4308 switch (phba->cgn_reg_signal) {
4309 case EDC_CG_SIG_WARN_ONLY:
4310 cgd->rcv_signal_capability = cpu_to_be32(EDC_CG_SIG_WARN_ONLY);
4311 break;
4312 case EDC_CG_SIG_WARN_ALARM:
4313 cgd->rcv_signal_capability = cpu_to_be32(EDC_CG_SIG_WARN_ALARM);
4314 break;
4315 default:
4316 /* rcv_signal_capability left 0 thus no support */
4317 break;
4318 }
4319
4320 /* We start negotiation with lpfc_fabric_cgn_frequency, after
4321 * the completion we settle on the higher frequency.
4322 */
4323 cgd->rcv_signal_frequency.count =
4324 cpu_to_be16(lpfc_fabric_cgn_frequency);
4325 cgd->rcv_signal_frequency.units =
4326 cpu_to_be16(EDC_CG_SIGFREQ_MSEC);
4327}
4328
4329static bool
4330lpfc_link_is_lds_capable(struct lpfc_hba *phba)
4331{
4332 if (!(phba->lmt & (LMT_64Gb | LMT_128Gb)))
4333 return false;
4334 if (phba->sli_rev != LPFC_SLI_REV4)
4335 return false;
4336
4337 if (phba->sli4_hba.conf_trunk) {
4338 switch (phba->trunk_link.phy_lnk_speed) {
4339 case LPFC_USER_LINK_SPEED_128G:
4340 case LPFC_USER_LINK_SPEED_64G:
4341 return true;
4342 default:
4343 return false;
4344 }
4345 }
4346
4347 switch (phba->fc_linkspeed) {
4348 case LPFC_LINK_SPEED_128GHZ:
4349 case LPFC_LINK_SPEED_64GHZ:
4350 return true;
4351 default:
4352 return false;
4353 }
4354}
4355
4356 /**
4357 * lpfc_issue_els_edc - Exchange Diagnostic Capabilities with the fabric.
4358 * @vport: pointer to a host virtual N_Port data structure.
4359 * @retry: retry counter for the command iocb.
4360 *
4361 * This routine issues an ELS EDC to the F-Port Controller to communicate
4362 * this N_Port's support of hardware signals in its Congestion
4363 * Capabilities Descriptor.
4364 *
4365 * Note: This routine does not check if one or more signals are
4366 * set in the cgn_reg_signal parameter. The caller makes the
4367 * decision to enforce cgn_reg_signal as nonzero or zero depending
4368 * on the conditions. During Fabric requests, the driver
4369 * requires cgn_reg_signals to be nonzero. But a dynamic request
4370 * to set the congestion mode to OFF from Monitor or Manage
4371 * would correctly issue an EDC with no signals enabled to
4372 * turn off switch functionality and then update the FW.
4373 *
4374 * Return code
4375 * 0 - Successfully issued edc command
4376 * 1 - Failed to issue edc command
4377 **/
4378int
4379lpfc_issue_els_edc(struct lpfc_vport *vport, uint8_t retry)
4380{
4381 struct lpfc_hba *phba = vport->phba;
4382 struct lpfc_iocbq *elsiocb;
4383 struct fc_els_edc *edc_req;
4384 struct fc_tlv_desc *tlv;
4385 u16 cmdsize;
4386 struct lpfc_nodelist *ndlp;
4387 u8 *pcmd = NULL;
4388 u32 cgn_desc_size, lft_desc_size;
4389 int rc;
4390
4391 if (vport->port_type == LPFC_NPIV_PORT)
4392 return -EACCES;
4393
4394 ndlp = lpfc_findnode_did(vport, Fabric_DID);
4395 if (!ndlp || ndlp->nlp_state != NLP_STE_UNMAPPED_NODE)
4396 return -ENODEV;
4397
4398 cgn_desc_size = (phba->cgn_init_reg_signal) ?
4399 sizeof(struct fc_diag_cg_sig_desc) : 0;
4400 lft_desc_size = (lpfc_link_is_lds_capable(phba)) ?
4401 sizeof(struct fc_diag_lnkflt_desc) : 0;
4402 cmdsize = cgn_desc_size + lft_desc_size;
4403
4404 /* Skip EDC if no applicable descriptors */
4405 if (!cmdsize)
4406 goto try_rdf;
4407
4408 cmdsize += sizeof(struct fc_els_edc);
4409 elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp,
4410 ndlp->nlp_DID, ELS_CMD_EDC);
4411 if (!elsiocb)
4412 goto try_rdf;
4413
4414 /* Configure the payload for the supported Diagnostics capabilities. */
4415 pcmd = (u8 *)elsiocb->cmd_dmabuf->virt;
4416 memset(pcmd, 0, cmdsize);
4417 edc_req = (struct fc_els_edc *)pcmd;
4418 edc_req->desc_len = cpu_to_be32(cgn_desc_size + lft_desc_size);
4419 edc_req->edc_cmd = ELS_EDC;
4420 tlv = edc_req->desc;
4421
4422 if (cgn_desc_size) {
4423 lpfc_format_edc_cgn_desc(phba, tlv);
4424 phba->cgn_sig_freq = lpfc_fabric_cgn_frequency;
4425 tlv = fc_tlv_next_desc(tlv);
4426 }
4427
4428 if (lft_desc_size)
4429 lpfc_format_edc_lft_desc(phba, tlv);
4430
4431 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS | LOG_CGN_MGMT,
4432 "4623 Xmit EDC to remote "
4433 "NPORT x%x reg_sig x%x reg_fpin:x%x\n",
4434 ndlp->nlp_DID, phba->cgn_reg_signal,
4435 phba->cgn_reg_fpin);
4436
4437 elsiocb->cmd_cmpl = lpfc_cmpl_els_disc_cmd;
4438 elsiocb->ndlp = lpfc_nlp_get(ndlp);
4439 if (!elsiocb->ndlp) {
4440 lpfc_els_free_iocb(phba, elsiocb);
4441 return -EIO;
4442 }
4443
4444 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
4445 "Issue EDC: did:x%x refcnt %d",
4446 ndlp->nlp_DID, kref_read(&ndlp->kref), 0);
4447 rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
4448 if (rc == IOCB_ERROR) {
4449 /* The additional lpfc_nlp_put will cause the following
4450 * lpfc_els_free_iocb routine to trigger the release of
4451 * the node.
4452 */
4453 lpfc_els_free_iocb(phba, elsiocb);
4454 lpfc_nlp_put(ndlp);
4455 goto try_rdf;
4456 }
4457 return 0;
4458try_rdf:
4459 phba->cgn_reg_fpin = LPFC_CGN_FPIN_WARN | LPFC_CGN_FPIN_ALARM;
4460 phba->cgn_reg_signal = EDC_CG_SIG_NOTSUPPORTED;
4461 rc = lpfc_issue_els_rdf(vport, 0);
4462 return rc;
4463}
4464
4465/**
4466 * lpfc_cancel_retry_delay_tmo - Cancel the timer with delayed iocb-cmd retry
4467 * @vport: pointer to a host virtual N_Port data structure.
4468 * @nlp: pointer to a node-list data structure.
4469 *
4470 * This routine cancels the timer with a delayed IOCB-command retry for
4471 * a @vport's @ndlp. It stops the timer for the delayed function retrial and
4472 * removes the ELS retry event if it presents. In addition, if the
4473 * NLP_NPR_2B_DISC bit is set in the @nlp's nlp_flag bitmap, ADISC IOCB
4474 * commands are sent for the @vport's nodes that require issuing discovery
4475 * ADISC.
4476 **/
4477void
4478lpfc_cancel_retry_delay_tmo(struct lpfc_vport *vport, struct lpfc_nodelist *nlp)
4479{
4480 struct lpfc_work_evt *evtp;
4481
4482 if (!test_and_clear_bit(NLP_DELAY_TMO, &nlp->nlp_flag))
4483 return;
4484 timer_delete_sync(&nlp->nlp_delayfunc);
4485 nlp->nlp_last_elscmd = 0;
4486 if (!list_empty(&nlp->els_retry_evt.evt_listp)) {
4487 list_del_init(&nlp->els_retry_evt.evt_listp);
4488 /* Decrement nlp reference count held for the delayed retry */
4489 evtp = &nlp->els_retry_evt;
4490 lpfc_nlp_put((struct lpfc_nodelist *)evtp->evt_arg1);
4491 }
4492 if (test_and_clear_bit(NLP_NPR_2B_DISC, &nlp->nlp_flag)) {
4493 if (vport->num_disc_nodes) {
4494 if (vport->port_state < LPFC_VPORT_READY) {
4495 /* Check if there are more ADISCs to be sent */
4496 lpfc_more_adisc(vport);
4497 } else {
4498 /* Check if there are more PLOGIs to be sent */
4499 lpfc_more_plogi(vport);
4500 if (vport->num_disc_nodes == 0) {
4501 clear_bit(FC_NDISC_ACTIVE,
4502 &vport->fc_flag);
4503 lpfc_can_disctmo(vport);
4504 lpfc_end_rscn(vport);
4505 }
4506 }
4507 }
4508 }
4509 return;
4510}
4511
4512/**
4513 * lpfc_els_retry_delay - Timer function with a ndlp delayed function timer
4514 * @t: pointer to the timer function associated data (ndlp).
4515 *
4516 * This routine is invoked by the ndlp delayed-function timer to check
4517 * whether there is any pending ELS retry event(s) with the node. If not, it
4518 * simply returns. Otherwise, if there is at least one ELS delayed event, it
4519 * adds the delayed events to the HBA work list and invokes the
4520 * lpfc_worker_wake_up() routine to wake up worker thread to process the
4521 * event. Note that lpfc_nlp_get() is called before posting the event to
4522 * the work list to hold reference count of ndlp so that it guarantees the
4523 * reference to ndlp will still be available when the worker thread gets
4524 * to the event associated with the ndlp.
4525 **/
4526void
4527lpfc_els_retry_delay(struct timer_list *t)
4528{
4529 struct lpfc_nodelist *ndlp = timer_container_of(ndlp, t,
4530 nlp_delayfunc);
4531 struct lpfc_vport *vport = ndlp->vport;
4532 struct lpfc_hba *phba = vport->phba;
4533 unsigned long flags;
4534 struct lpfc_work_evt *evtp = &ndlp->els_retry_evt;
4535
4536 /* Hold a node reference for outstanding queued work */
4537 if (!lpfc_nlp_get(ndlp))
4538 return;
4539
4540 spin_lock_irqsave(&phba->hbalock, flags);
4541 if (!list_empty(&evtp->evt_listp)) {
4542 spin_unlock_irqrestore(&phba->hbalock, flags);
4543 lpfc_nlp_put(ndlp);
4544 return;
4545 }
4546
4547 evtp->evt_arg1 = ndlp;
4548 evtp->evt = LPFC_EVT_ELS_RETRY;
4549 list_add_tail(&evtp->evt_listp, &phba->work_list);
4550 spin_unlock_irqrestore(&phba->hbalock, flags);
4551
4552 lpfc_worker_wake_up(phba);
4553}
4554
4555/**
4556 * lpfc_els_retry_delay_handler - Work thread handler for ndlp delayed function
4557 * @ndlp: pointer to a node-list data structure.
4558 *
4559 * This routine is the worker-thread handler for processing the @ndlp delayed
4560 * event(s), posted by the lpfc_els_retry_delay() routine. It simply retrieves
4561 * the last ELS command from the associated ndlp and invokes the proper ELS
4562 * function according to the delayed ELS command to retry the command.
4563 **/
4564void
4565lpfc_els_retry_delay_handler(struct lpfc_nodelist *ndlp)
4566{
4567 struct lpfc_vport *vport = ndlp->vport;
4568 uint32_t cmd, retry;
4569
4570 spin_lock_irq(&ndlp->lock);
4571 cmd = ndlp->nlp_last_elscmd;
4572 ndlp->nlp_last_elscmd = 0;
4573 spin_unlock_irq(&ndlp->lock);
4574
4575 if (!test_and_clear_bit(NLP_DELAY_TMO, &ndlp->nlp_flag))
4576 return;
4577
4578 /*
4579 * If a discovery event readded nlp_delayfunc after timer
4580 * firing and before processing the timer, cancel the
4581 * nlp_delayfunc.
4582 */
4583 timer_delete_sync(&ndlp->nlp_delayfunc);
4584 retry = ndlp->nlp_retry;
4585 ndlp->nlp_retry = 0;
4586
4587 switch (cmd) {
4588 case ELS_CMD_FLOGI:
4589 lpfc_issue_els_flogi(vport, ndlp, retry);
4590 break;
4591 case ELS_CMD_PLOGI:
4592 if (!lpfc_issue_els_plogi(vport, ndlp->nlp_DID, retry)) {
4593 ndlp->nlp_prev_state = ndlp->nlp_state;
4594 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
4595 }
4596 break;
4597 case ELS_CMD_ADISC:
4598 if (!lpfc_issue_els_adisc(vport, ndlp, retry)) {
4599 ndlp->nlp_prev_state = ndlp->nlp_state;
4600 lpfc_nlp_set_state(vport, ndlp, NLP_STE_ADISC_ISSUE);
4601 }
4602 break;
4603 case ELS_CMD_PRLI:
4604 case ELS_CMD_NVMEPRLI:
4605 if (!lpfc_issue_els_prli(vport, ndlp, retry)) {
4606 ndlp->nlp_prev_state = ndlp->nlp_state;
4607 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PRLI_ISSUE);
4608 }
4609 break;
4610 case ELS_CMD_LOGO:
4611 if (!lpfc_issue_els_logo(vport, ndlp, retry)) {
4612 ndlp->nlp_prev_state = ndlp->nlp_state;
4613 lpfc_nlp_set_state(vport, ndlp, NLP_STE_LOGO_ISSUE);
4614 }
4615 break;
4616 case ELS_CMD_FDISC:
4617 if (!test_bit(FC_VPORT_NEEDS_INIT_VPI, &vport->fc_flag))
4618 lpfc_issue_els_fdisc(vport, ndlp, retry);
4619 break;
4620 }
4621 return;
4622}
4623
4624/**
4625 * lpfc_link_reset - Issue link reset
4626 * @vport: pointer to a virtual N_Port data structure.
4627 *
4628 * This routine performs link reset by sending INIT_LINK mailbox command.
4629 * For SLI-3 adapter, link attention interrupt is enabled before issuing
4630 * INIT_LINK mailbox command.
4631 *
4632 * Return code
4633 * 0 - Link reset initiated successfully
4634 * 1 - Failed to initiate link reset
4635 **/
4636int
4637lpfc_link_reset(struct lpfc_vport *vport)
4638{
4639 struct lpfc_hba *phba = vport->phba;
4640 LPFC_MBOXQ_t *mbox;
4641 uint32_t control;
4642 int rc;
4643
4644 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
4645 "2851 Attempt link reset\n");
4646 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
4647 if (!mbox) {
4648 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
4649 "2852 Failed to allocate mbox memory");
4650 return 1;
4651 }
4652
4653 /* Enable Link attention interrupts */
4654 if (phba->sli_rev <= LPFC_SLI_REV3) {
4655 spin_lock_irq(&phba->hbalock);
4656 phba->sli.sli_flag |= LPFC_PROCESS_LA;
4657 control = readl(phba->HCregaddr);
4658 control |= HC_LAINT_ENA;
4659 writel(control, phba->HCregaddr);
4660 readl(phba->HCregaddr); /* flush */
4661 spin_unlock_irq(&phba->hbalock);
4662 }
4663
4664 lpfc_init_link(phba, mbox, phba->cfg_topology,
4665 phba->cfg_link_speed);
4666 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
4667 mbox->vport = vport;
4668 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
4669 if ((rc != MBX_BUSY) && (rc != MBX_SUCCESS)) {
4670 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
4671 "2853 Failed to issue INIT_LINK "
4672 "mbox command, rc:x%x\n", rc);
4673 mempool_free(mbox, phba->mbox_mem_pool);
4674 return 1;
4675 }
4676
4677 return 0;
4678}
4679
4680/**
4681 * lpfc_els_retry - Make retry decision on an els command iocb
4682 * @phba: pointer to lpfc hba data structure.
4683 * @cmdiocb: pointer to lpfc command iocb data structure.
4684 * @rspiocb: pointer to lpfc response iocb data structure.
4685 *
4686 * This routine makes a retry decision on an ELS command IOCB, which has
4687 * failed. The following ELS IOCBs use this function for retrying the command
4688 * when previously issued command responsed with error status: FLOGI, PLOGI,
4689 * PRLI, ADISC and FDISC. Based on the ELS command type and the
4690 * returned error status, it makes the decision whether a retry shall be
4691 * issued for the command, and whether a retry shall be made immediately or
4692 * delayed. In the former case, the corresponding ELS command issuing-function
4693 * is called to retry the command. In the later case, the ELS command shall
4694 * be posted to the ndlp delayed event and delayed function timer set to the
4695 * ndlp for the delayed command issusing.
4696 *
4697 * Return code
4698 * 0 - No retry of els command is made
4699 * 1 - Immediate or delayed retry of els command is made
4700 **/
4701static int
4702lpfc_els_retry(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
4703 struct lpfc_iocbq *rspiocb)
4704{
4705 struct lpfc_vport *vport = cmdiocb->vport;
4706 union lpfc_wqe128 *irsp = &rspiocb->wqe;
4707 struct lpfc_nodelist *ndlp = cmdiocb->ndlp;
4708 struct lpfc_dmabuf *pcmd = cmdiocb->cmd_dmabuf;
4709 uint32_t *elscmd;
4710 struct ls_rjt stat;
4711 int retry = 0, maxretry = lpfc_max_els_tries, delay = 0;
4712 int logerr = 0;
4713 uint32_t cmd = 0;
4714 uint32_t did;
4715 int link_reset = 0, rc;
4716 u32 ulp_status = get_job_ulpstatus(phba, rspiocb);
4717 u32 ulp_word4 = get_job_word4(phba, rspiocb);
4718 u8 rsn_code_exp = 0;
4719
4720
4721 /* Note: cmd_dmabuf may be 0 for internal driver abort
4722 * of delays ELS command.
4723 */
4724
4725 if (pcmd && pcmd->virt) {
4726 elscmd = (uint32_t *) (pcmd->virt);
4727 cmd = *elscmd++;
4728 }
4729
4730 if (ndlp)
4731 did = ndlp->nlp_DID;
4732 else {
4733 /* We should only hit this case for retrying PLOGI */
4734 did = get_job_els_rsp64_did(phba, rspiocb);
4735 ndlp = lpfc_findnode_did(vport, did);
4736 if (!ndlp && (cmd != ELS_CMD_PLOGI))
4737 return 0;
4738 }
4739
4740 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
4741 "Retry ELS: wd7:x%x wd4:x%x did:x%x",
4742 *(((uint32_t *)irsp) + 7), ulp_word4, did);
4743
4744 switch (ulp_status) {
4745 case IOSTAT_FCP_RSP_ERROR:
4746 break;
4747 case IOSTAT_REMOTE_STOP:
4748 if (phba->sli_rev == LPFC_SLI_REV4) {
4749 /* This IO was aborted by the target, we don't
4750 * know the rxid and because we did not send the
4751 * ABTS we cannot generate and RRQ.
4752 */
4753 lpfc_set_rrq_active(phba, ndlp,
4754 cmdiocb->sli4_lxritag, 0, 0);
4755 }
4756 break;
4757 case IOSTAT_LOCAL_REJECT:
4758 switch ((ulp_word4 & IOERR_PARAM_MASK)) {
4759 case IOERR_LOOP_OPEN_FAILURE:
4760 if (cmd == ELS_CMD_PLOGI && cmdiocb->retry == 0)
4761 delay = 1000;
4762 retry = 1;
4763 break;
4764
4765 case IOERR_ILLEGAL_COMMAND:
4766 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
4767 "0124 Retry illegal cmd x%x "
4768 "retry:x%x delay:x%x\n",
4769 cmd, cmdiocb->retry, delay);
4770 retry = 1;
4771 /* All command's retry policy */
4772 maxretry = 8;
4773 if (cmdiocb->retry > 2)
4774 delay = 1000;
4775 break;
4776
4777 case IOERR_NO_RESOURCES:
4778 logerr = 1; /* HBA out of resources */
4779 retry = 1;
4780 if (cmdiocb->retry > 100)
4781 delay = 100;
4782 maxretry = 250;
4783 break;
4784
4785 case IOERR_ILLEGAL_FRAME:
4786 delay = 100;
4787 retry = 1;
4788 break;
4789
4790 case IOERR_INVALID_RPI:
4791 if (cmd == ELS_CMD_PLOGI &&
4792 did == NameServer_DID) {
4793 /* Continue forever if plogi to */
4794 /* the nameserver fails */
4795 maxretry = 0;
4796 delay = 100;
4797 } else if (cmd == ELS_CMD_PRLI &&
4798 ndlp->nlp_state != NLP_STE_PRLI_ISSUE) {
4799 /* State-command disagreement. The PRLI was
4800 * failed with an invalid rpi meaning there
4801 * some unexpected state change. Don't retry.
4802 */
4803 maxretry = 0;
4804 retry = 0;
4805 break;
4806 }
4807 retry = 1;
4808 break;
4809
4810 case IOERR_SEQUENCE_TIMEOUT:
4811 if (cmd == ELS_CMD_PLOGI &&
4812 did == NameServer_DID &&
4813 (cmdiocb->retry + 1) == maxretry) {
4814 /* Reset the Link */
4815 link_reset = 1;
4816 break;
4817 }
4818 retry = 1;
4819 delay = 100;
4820 break;
4821 case IOERR_SLI_ABORTED:
4822 /* Retry ELS PLOGI command?
4823 * Possibly the rport just wasn't ready.
4824 */
4825 if (cmd == ELS_CMD_PLOGI) {
4826 /* No retry if state change */
4827 if (ndlp &&
4828 ndlp->nlp_state != NLP_STE_PLOGI_ISSUE)
4829 goto out_retry;
4830 retry = 1;
4831 maxretry = 2;
4832 }
4833 break;
4834 }
4835 break;
4836
4837 case IOSTAT_NPORT_RJT:
4838 case IOSTAT_FABRIC_RJT:
4839 if (ulp_word4 & RJT_UNAVAIL_TEMP) {
4840 retry = 1;
4841 break;
4842 }
4843 break;
4844
4845 case IOSTAT_NPORT_BSY:
4846 case IOSTAT_FABRIC_BSY:
4847 logerr = 1; /* Fabric / Remote NPort out of resources */
4848 retry = 1;
4849 break;
4850
4851 case IOSTAT_LS_RJT:
4852 stat.un.ls_rjt_error_be = cpu_to_be32(ulp_word4);
4853 /* Added for Vendor specifc support
4854 * Just keep retrying for these Rsn / Exp codes
4855 */
4856 if (test_bit(FC_PT2PT, &vport->fc_flag) &&
4857 cmd == ELS_CMD_NVMEPRLI) {
4858 switch (stat.un.b.lsRjtRsnCode) {
4859 case LSRJT_UNABLE_TPC:
4860 case LSRJT_INVALID_CMD:
4861 case LSRJT_LOGICAL_ERR:
4862 case LSRJT_CMD_UNSUPPORTED:
4863 lpfc_printf_vlog(vport, KERN_WARNING, LOG_ELS,
4864 "0168 NVME PRLI LS_RJT "
4865 "reason %x port doesn't "
4866 "support NVME, disabling NVME\n",
4867 stat.un.b.lsRjtRsnCode);
4868 retry = 0;
4869 set_bit(FC_PT2PT_NO_NVME, &vport->fc_flag);
4870 goto out_retry;
4871 }
4872 }
4873 switch (stat.un.b.lsRjtRsnCode) {
4874 case LSRJT_UNABLE_TPC:
4875 /* Special case for PRLI LS_RJTs. Recall that lpfc
4876 * uses a single routine to issue both PRLI FC4 types.
4877 * If the PRLI is rejected because that FC4 type
4878 * isn't really supported, don't retry and cause
4879 * multiple transport registrations. Otherwise, parse
4880 * the reason code/reason code explanation and take the
4881 * appropriate action.
4882 */
4883 lpfc_printf_vlog(vport, KERN_INFO,
4884 LOG_DISCOVERY | LOG_ELS | LOG_NODE,
4885 "0153 ELS cmd x%x LS_RJT by x%x. "
4886 "RsnCode x%x RsnCodeExp x%x\n",
4887 cmd, did, stat.un.b.lsRjtRsnCode,
4888 stat.un.b.lsRjtRsnCodeExp);
4889
4890 switch (stat.un.b.lsRjtRsnCodeExp) {
4891 case LSEXP_CANT_GIVE_DATA:
4892 case LSEXP_CMD_IN_PROGRESS:
4893 if (cmd == ELS_CMD_PLOGI) {
4894 delay = 1000;
4895 maxretry = 48;
4896 }
4897 retry = 1;
4898 break;
4899 case LSEXP_REQ_UNSUPPORTED:
4900 case LSEXP_NO_RSRC_ASSIGN:
4901 /* These explanation codes get no retry. */
4902 if (cmd == ELS_CMD_PRLI ||
4903 cmd == ELS_CMD_NVMEPRLI)
4904 break;
4905 fallthrough;
4906 default:
4907 /* Limit the delay and retry action to a limited
4908 * cmd set. There are other ELS commands where
4909 * a retry is not expected.
4910 */
4911 if (cmd == ELS_CMD_PLOGI ||
4912 cmd == ELS_CMD_PRLI ||
4913 cmd == ELS_CMD_NVMEPRLI) {
4914 delay = 1000;
4915 maxretry = lpfc_max_els_tries + 1;
4916 retry = 1;
4917 }
4918 break;
4919 }
4920
4921 if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
4922 (cmd == ELS_CMD_FDISC) &&
4923 (stat.un.b.lsRjtRsnCodeExp == LSEXP_OUT_OF_RESOURCE)){
4924 lpfc_vlog_msg(vport, KERN_WARNING, LOG_ELS,
4925 "0125 FDISC (x%x). "
4926 "Fabric out of resources\n",
4927 stat.un.lsRjtError);
4928 lpfc_vport_set_state(vport,
4929 FC_VPORT_NO_FABRIC_RSCS);
4930 }
4931 break;
4932
4933 case LSRJT_LOGICAL_BSY:
4934 rsn_code_exp = stat.un.b.lsRjtRsnCodeExp;
4935 if ((cmd == ELS_CMD_PLOGI) ||
4936 (cmd == ELS_CMD_PRLI) ||
4937 (cmd == ELS_CMD_NVMEPRLI)) {
4938 delay = 1000;
4939 maxretry = 48;
4940
4941 /* An authentication LS_RJT reason code
4942 * explanation means some error in the
4943 * security settings end-to-end. Reduce
4944 * the retry count to allow lpfc to clear
4945 * RSCN mode and not race with dev_loss.
4946 */
4947 if (cmd == ELS_CMD_PLOGI &&
4948 rsn_code_exp == LSEXP_AUTH_REQ)
4949 maxretry = 8;
4950 } else if (cmd == ELS_CMD_FDISC) {
4951 /* FDISC retry policy */
4952 maxretry = 48;
4953 if (cmdiocb->retry >= 32)
4954 delay = 1000;
4955 }
4956 retry = 1;
4957 break;
4958
4959 case LSRJT_LOGICAL_ERR:
4960 /* There are some cases where switches return this
4961 * error when they are not ready and should be returning
4962 * Logical Busy. We should delay every time.
4963 */
4964 if (cmd == ELS_CMD_FDISC &&
4965 stat.un.b.lsRjtRsnCodeExp == LSEXP_PORT_LOGIN_REQ) {
4966 maxretry = 3;
4967 delay = 1000;
4968 retry = 1;
4969 } else if (cmd == ELS_CMD_FLOGI &&
4970 stat.un.b.lsRjtRsnCodeExp ==
4971 LSEXP_NOTHING_MORE) {
4972 vport->fc_sparam.cmn.bbRcvSizeMsb &= 0xf;
4973 retry = 1;
4974 lpfc_vlog_msg(vport, KERN_WARNING, LOG_ELS,
4975 "0820 FLOGI (x%x). "
4976 "BBCredit Not Supported\n",
4977 stat.un.lsRjtError);
4978 } else if (cmd == ELS_CMD_PLOGI) {
4979 rsn_code_exp = stat.un.b.lsRjtRsnCodeExp;
4980
4981 /* An authentication LS_RJT reason code
4982 * explanation means some error in the
4983 * security settings end-to-end. Reduce
4984 * the retry count to allow lpfc to clear
4985 * RSCN mode and not race with dev_loss.
4986 */
4987 if (rsn_code_exp == LSEXP_AUTH_REQ) {
4988 delay = 1000;
4989 retry = 1;
4990 maxretry = 8;
4991 }
4992 }
4993 break;
4994
4995 case LSRJT_PROTOCOL_ERR:
4996 if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
4997 (cmd == ELS_CMD_FDISC) &&
4998 ((stat.un.b.lsRjtRsnCodeExp == LSEXP_INVALID_PNAME) ||
4999 (stat.un.b.lsRjtRsnCodeExp == LSEXP_INVALID_NPORT_ID))
5000 ) {
5001 lpfc_vlog_msg(vport, KERN_WARNING, LOG_ELS,
5002 "0122 FDISC (x%x). "
5003 "Fabric Detected Bad WWN\n",
5004 stat.un.lsRjtError);
5005 lpfc_vport_set_state(vport,
5006 FC_VPORT_FABRIC_REJ_WWN);
5007 }
5008 break;
5009 case LSRJT_VENDOR_UNIQUE:
5010 if ((stat.un.b.vendorUnique == 0x45) &&
5011 (cmd == ELS_CMD_FLOGI)) {
5012 goto out_retry;
5013 }
5014 break;
5015 case LSRJT_CMD_UNSUPPORTED:
5016 /* lpfc nvmet returns this type of LS_RJT when it
5017 * receives an FCP PRLI because lpfc nvmet only
5018 * support NVME. ELS request is terminated for FCP4
5019 * on this rport.
5020 */
5021 if (stat.un.b.lsRjtRsnCodeExp ==
5022 LSEXP_REQ_UNSUPPORTED) {
5023 if (cmd == ELS_CMD_PRLI)
5024 goto out_retry;
5025 }
5026 break;
5027 }
5028 break;
5029
5030 case IOSTAT_INTERMED_RSP:
5031 case IOSTAT_BA_RJT:
5032 break;
5033
5034 default:
5035 break;
5036 }
5037
5038 if (link_reset) {
5039 rc = lpfc_link_reset(vport);
5040 if (rc) {
5041 /* Do not give up. Retry PLOGI one more time and attempt
5042 * link reset if PLOGI fails again.
5043 */
5044 retry = 1;
5045 delay = 100;
5046 goto out_retry;
5047 }
5048 return 1;
5049 }
5050
5051 if (did == FDMI_DID)
5052 retry = 1;
5053
5054 if ((cmd == ELS_CMD_FLOGI) &&
5055 (phba->fc_topology != LPFC_TOPOLOGY_LOOP) &&
5056 !lpfc_error_lost_link(vport, ulp_status, ulp_word4)) {
5057 /* FLOGI retry policy */
5058 retry = 1;
5059 /* retry FLOGI forever */
5060 if (phba->link_flag != LS_LOOPBACK_MODE)
5061 maxretry = 0;
5062 else
5063 maxretry = 2;
5064
5065 if (cmdiocb->retry >= 100)
5066 delay = 5000;
5067 else if (cmdiocb->retry >= 32)
5068 delay = 1000;
5069 } else if ((cmd == ELS_CMD_FDISC) &&
5070 !lpfc_error_lost_link(vport, ulp_status, ulp_word4)) {
5071 /* retry FDISCs every second up to devloss */
5072 retry = 1;
5073 maxretry = vport->cfg_devloss_tmo;
5074 delay = 1000;
5075 }
5076
5077 cmdiocb->retry++;
5078 if (maxretry && (cmdiocb->retry >= maxretry)) {
5079 phba->fc_stat.elsRetryExceeded++;
5080 retry = 0;
5081 }
5082
5083 if (test_bit(FC_UNLOADING, &vport->load_flag))
5084 retry = 0;
5085
5086out_retry:
5087 if (retry) {
5088 if ((cmd == ELS_CMD_PLOGI) || (cmd == ELS_CMD_FDISC)) {
5089 /* Stop retrying PLOGI and FDISC if in FCF discovery */
5090 if (phba->fcf.fcf_flag & FCF_DISCOVERY) {
5091 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
5092 "2849 Stop retry ELS command "
5093 "x%x to remote NPORT x%x, "
5094 "Data: x%x x%x\n", cmd, did,
5095 cmdiocb->retry, delay);
5096 return 0;
5097 }
5098 }
5099
5100 /* Retry ELS command <elsCmd> to remote NPORT <did> */
5101 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
5102 "0107 Retry ELS command x%x to remote "
5103 "NPORT x%x Data: x%x x%x\n",
5104 cmd, did, cmdiocb->retry, delay);
5105
5106 if (((cmd == ELS_CMD_PLOGI) || (cmd == ELS_CMD_ADISC)) &&
5107 ((ulp_status != IOSTAT_LOCAL_REJECT) ||
5108 ((ulp_word4 & IOERR_PARAM_MASK) !=
5109 IOERR_NO_RESOURCES))) {
5110 /* Don't reset timer for no resources */
5111
5112 /* If discovery / RSCN timer is running, reset it */
5113 if (timer_pending(&vport->fc_disctmo) ||
5114 test_bit(FC_RSCN_MODE, &vport->fc_flag))
5115 lpfc_set_disctmo(vport);
5116 }
5117
5118 phba->fc_stat.elsXmitRetry++;
5119 if (ndlp && delay) {
5120 phba->fc_stat.elsDelayRetry++;
5121 ndlp->nlp_retry = cmdiocb->retry;
5122
5123 /* delay is specified in milliseconds */
5124 mod_timer(&ndlp->nlp_delayfunc,
5125 jiffies + msecs_to_jiffies(delay));
5126 set_bit(NLP_DELAY_TMO, &ndlp->nlp_flag);
5127
5128 ndlp->nlp_prev_state = ndlp->nlp_state;
5129 if ((cmd == ELS_CMD_PRLI) ||
5130 (cmd == ELS_CMD_NVMEPRLI))
5131 lpfc_nlp_set_state(vport, ndlp,
5132 NLP_STE_PRLI_ISSUE);
5133 else if (cmd != ELS_CMD_ADISC)
5134 lpfc_nlp_set_state(vport, ndlp,
5135 NLP_STE_NPR_NODE);
5136 ndlp->nlp_last_elscmd = cmd;
5137
5138 return 1;
5139 }
5140 switch (cmd) {
5141 case ELS_CMD_FLOGI:
5142 lpfc_issue_els_flogi(vport, ndlp, cmdiocb->retry);
5143 return 1;
5144 case ELS_CMD_FDISC:
5145 lpfc_issue_els_fdisc(vport, ndlp, cmdiocb->retry);
5146 return 1;
5147 case ELS_CMD_PLOGI:
5148 if (ndlp) {
5149 ndlp->nlp_prev_state = ndlp->nlp_state;
5150 lpfc_nlp_set_state(vport, ndlp,
5151 NLP_STE_PLOGI_ISSUE);
5152 }
5153 lpfc_issue_els_plogi(vport, did, cmdiocb->retry);
5154 return 1;
5155 case ELS_CMD_ADISC:
5156 ndlp->nlp_prev_state = ndlp->nlp_state;
5157 lpfc_nlp_set_state(vport, ndlp, NLP_STE_ADISC_ISSUE);
5158 lpfc_issue_els_adisc(vport, ndlp, cmdiocb->retry);
5159 return 1;
5160 case ELS_CMD_PRLI:
5161 case ELS_CMD_NVMEPRLI:
5162 ndlp->nlp_prev_state = ndlp->nlp_state;
5163 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PRLI_ISSUE);
5164 lpfc_issue_els_prli(vport, ndlp, cmdiocb->retry);
5165 return 1;
5166 case ELS_CMD_LOGO:
5167 ndlp->nlp_prev_state = ndlp->nlp_state;
5168 lpfc_nlp_set_state(vport, ndlp, NLP_STE_LOGO_ISSUE);
5169 lpfc_issue_els_logo(vport, ndlp, cmdiocb->retry);
5170 return 1;
5171 }
5172 }
5173 /* No retry ELS command <elsCmd> to remote NPORT <did> */
5174 if (logerr) {
5175 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
5176 "0137 No retry ELS command x%x to remote "
5177 "NPORT x%x: Out of Resources: Error:x%x/%x "
5178 "IoTag x%x\n",
5179 cmd, did, ulp_status, ulp_word4,
5180 cmdiocb->iotag);
5181 }
5182 else {
5183 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
5184 "0108 No retry ELS command x%x to remote "
5185 "NPORT x%x Retried:%d Error:x%x/%x "
5186 "IoTag x%x nflags x%lx\n",
5187 cmd, did, cmdiocb->retry, ulp_status,
5188 ulp_word4, cmdiocb->iotag,
5189 (ndlp ? ndlp->nlp_flag : 0));
5190 }
5191 return 0;
5192}
5193
5194/**
5195 * lpfc_els_free_data - Free lpfc dma buffer and data structure with an iocb
5196 * @phba: pointer to lpfc hba data structure.
5197 * @buf_ptr1: pointer to the lpfc DMA buffer data structure.
5198 *
5199 * This routine releases the lpfc DMA (Direct Memory Access) buffer(s)
5200 * associated with a command IOCB back to the lpfc DMA buffer pool. It first
5201 * checks to see whether there is a lpfc DMA buffer associated with the
5202 * response of the command IOCB. If so, it will be released before releasing
5203 * the lpfc DMA buffer associated with the IOCB itself.
5204 *
5205 * Return code
5206 * 0 - Successfully released lpfc DMA buffer (currently, always return 0)
5207 **/
5208static int
5209lpfc_els_free_data(struct lpfc_hba *phba, struct lpfc_dmabuf *buf_ptr1)
5210{
5211 struct lpfc_dmabuf *buf_ptr;
5212
5213 /* Free the response before processing the command. */
5214 if (!list_empty(&buf_ptr1->list)) {
5215 list_remove_head(&buf_ptr1->list, buf_ptr,
5216 struct lpfc_dmabuf,
5217 list);
5218 lpfc_mbuf_free(phba, buf_ptr->virt, buf_ptr->phys);
5219 kfree(buf_ptr);
5220 }
5221 lpfc_mbuf_free(phba, buf_ptr1->virt, buf_ptr1->phys);
5222 kfree(buf_ptr1);
5223 return 0;
5224}
5225
5226/**
5227 * lpfc_els_free_bpl - Free lpfc dma buffer and data structure with bpl
5228 * @phba: pointer to lpfc hba data structure.
5229 * @buf_ptr: pointer to the lpfc dma buffer data structure.
5230 *
5231 * This routine releases the lpfc Direct Memory Access (DMA) buffer
5232 * associated with a Buffer Pointer List (BPL) back to the lpfc DMA buffer
5233 * pool.
5234 *
5235 * Return code
5236 * 0 - Successfully released lpfc DMA buffer (currently, always return 0)
5237 **/
5238static int
5239lpfc_els_free_bpl(struct lpfc_hba *phba, struct lpfc_dmabuf *buf_ptr)
5240{
5241 lpfc_mbuf_free(phba, buf_ptr->virt, buf_ptr->phys);
5242 kfree(buf_ptr);
5243 return 0;
5244}
5245
5246/**
5247 * lpfc_els_free_iocb - Free a command iocb and its associated resources
5248 * @phba: pointer to lpfc hba data structure.
5249 * @elsiocb: pointer to lpfc els command iocb data structure.
5250 *
5251 * This routine frees a command IOCB and its associated resources. The
5252 * command IOCB data structure contains the reference to various associated
5253 * resources, these fields must be set to NULL if the associated reference
5254 * not present:
5255 * cmd_dmabuf - reference to cmd.
5256 * cmd_dmabuf->next - reference to rsp
5257 * rsp_dmabuf - unused
5258 * bpl_dmabuf - reference to bpl
5259 *
5260 * It first properly decrements the reference count held on ndlp for the
5261 * IOCB completion callback function. If LPFC_DELAY_MEM_FREE flag is not
5262 * set, it invokes the lpfc_els_free_data() routine to release the Direct
5263 * Memory Access (DMA) buffers associated with the IOCB. Otherwise, it
5264 * adds the DMA buffer the @phba data structure for the delayed release.
5265 * If reference to the Buffer Pointer List (BPL) is present, the
5266 * lpfc_els_free_bpl() routine is invoked to release the DMA memory
5267 * associated with BPL. Finally, the lpfc_sli_release_iocbq() routine is
5268 * invoked to release the IOCB data structure back to @phba IOCBQ list.
5269 *
5270 * Return code
5271 * 0 - Success (currently, always return 0)
5272 **/
5273int
5274lpfc_els_free_iocb(struct lpfc_hba *phba, struct lpfc_iocbq *elsiocb)
5275{
5276 struct lpfc_dmabuf *buf_ptr, *buf_ptr1;
5277
5278 /* The I/O iocb is complete. Clear the node and first dmabuf */
5279 elsiocb->ndlp = NULL;
5280
5281 /* cmd_dmabuf = cmd, cmd_dmabuf->next = rsp, bpl_dmabuf = bpl */
5282 if (elsiocb->cmd_dmabuf) {
5283 if (elsiocb->cmd_flag & LPFC_DELAY_MEM_FREE) {
5284 /* Firmware could still be in progress of DMAing
5285 * payload, so don't free data buffer till after
5286 * a hbeat.
5287 */
5288 elsiocb->cmd_flag &= ~LPFC_DELAY_MEM_FREE;
5289 buf_ptr = elsiocb->cmd_dmabuf;
5290 elsiocb->cmd_dmabuf = NULL;
5291 if (buf_ptr) {
5292 buf_ptr1 = NULL;
5293 spin_lock_irq(&phba->hbalock);
5294 if (!list_empty(&buf_ptr->list)) {
5295 list_remove_head(&buf_ptr->list,
5296 buf_ptr1, struct lpfc_dmabuf,
5297 list);
5298 INIT_LIST_HEAD(&buf_ptr1->list);
5299 list_add_tail(&buf_ptr1->list,
5300 &phba->elsbuf);
5301 phba->elsbuf_cnt++;
5302 }
5303 INIT_LIST_HEAD(&buf_ptr->list);
5304 list_add_tail(&buf_ptr->list, &phba->elsbuf);
5305 phba->elsbuf_cnt++;
5306 spin_unlock_irq(&phba->hbalock);
5307 }
5308 } else {
5309 buf_ptr1 = elsiocb->cmd_dmabuf;
5310 lpfc_els_free_data(phba, buf_ptr1);
5311 }
5312 }
5313
5314 if (elsiocb->bpl_dmabuf) {
5315 buf_ptr = elsiocb->bpl_dmabuf;
5316 lpfc_els_free_bpl(phba, buf_ptr);
5317 }
5318 lpfc_sli_release_iocbq(phba, elsiocb);
5319 return 0;
5320}
5321
5322/**
5323 * lpfc_cmpl_els_logo_acc - Completion callback function to logo acc response
5324 * @phba: pointer to lpfc hba data structure.
5325 * @cmdiocb: pointer to lpfc command iocb data structure.
5326 * @rspiocb: pointer to lpfc response iocb data structure.
5327 *
5328 * This routine is the completion callback function to the Logout (LOGO)
5329 * Accept (ACC) Response ELS command. This routine is invoked to indicate
5330 * the completion of the LOGO process. If the node has transitioned to NPR,
5331 * this routine unregisters the RPI if it is still registered. The
5332 * lpfc_els_free_iocb() is invoked to release the IOCB data structure.
5333 **/
5334static void
5335lpfc_cmpl_els_logo_acc(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
5336 struct lpfc_iocbq *rspiocb)
5337{
5338 struct lpfc_nodelist *ndlp = cmdiocb->ndlp;
5339 struct lpfc_vport *vport = cmdiocb->vport;
5340 u32 ulp_status, ulp_word4;
5341
5342 ulp_status = get_job_ulpstatus(phba, rspiocb);
5343 ulp_word4 = get_job_word4(phba, rspiocb);
5344
5345 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP,
5346 "ACC LOGO cmpl: status:x%x/x%x did:x%x",
5347 ulp_status, ulp_word4, ndlp->nlp_DID);
5348 /* ACC to LOGO completes to NPort <nlp_DID> */
5349 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
5350 "0109 ACC to LOGO completes to NPort x%x refcnt %d "
5351 "last els x%x Data: x%lx x%x x%x\n",
5352 ndlp->nlp_DID, kref_read(&ndlp->kref),
5353 ndlp->nlp_last_elscmd, ndlp->nlp_flag, ndlp->nlp_state,
5354 ndlp->nlp_rpi);
5355
5356 /* This clause allows the LOGO ACC to complete and free resources
5357 * for the Fabric Domain Controller. It does deliberately skip
5358 * the unreg_rpi and release rpi because some fabrics send RDP
5359 * requests after logging out from the initiator.
5360 */
5361 if (ndlp->nlp_type & NLP_FABRIC &&
5362 ((ndlp->nlp_DID & WELL_KNOWN_DID_MASK) != WELL_KNOWN_DID_MASK))
5363 goto out;
5364
5365 if (ndlp->nlp_state == NLP_STE_NPR_NODE) {
5366 if (test_bit(NLP_RPI_REGISTERED, &ndlp->nlp_flag))
5367 lpfc_unreg_rpi(vport, ndlp);
5368
5369 /* If came from PRLO, then PRLO_ACC is done.
5370 * Start rediscovery now.
5371 */
5372 if (ndlp->nlp_last_elscmd == ELS_CMD_PRLO) {
5373 set_bit(NLP_NPR_2B_DISC, &ndlp->nlp_flag);
5374 ndlp->nlp_prev_state = ndlp->nlp_state;
5375 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
5376 lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
5377 }
5378 }
5379
5380 out:
5381 /*
5382 * The driver received a LOGO from the rport and has ACK'd it.
5383 * At this point, the driver is done so release the IOCB
5384 */
5385 lpfc_els_free_iocb(phba, cmdiocb);
5386 lpfc_nlp_put(ndlp);
5387}
5388
5389/**
5390 * lpfc_mbx_cmpl_dflt_rpi - Completion callbk func for unreg dflt rpi mbox cmd
5391 * @phba: pointer to lpfc hba data structure.
5392 * @pmb: pointer to the driver internal queue element for mailbox command.
5393 *
5394 * This routine is the completion callback function for unregister default
5395 * RPI (Remote Port Index) mailbox command to the @phba. It simply releases
5396 * the associated lpfc Direct Memory Access (DMA) buffer back to the pool and
5397 * decrements the ndlp reference count held for this completion callback
5398 * function. After that, it invokes the lpfc_drop_node to check
5399 * whether it is appropriate to release the node.
5400 **/
5401void
5402lpfc_mbx_cmpl_dflt_rpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
5403{
5404 struct lpfc_nodelist *ndlp = pmb->ctx_ndlp;
5405 u32 mbx_flag = pmb->mbox_flag;
5406 u32 mbx_cmd = pmb->u.mb.mbxCommand;
5407
5408 if (ndlp) {
5409 lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_NODE,
5410 "0006 rpi x%x DID:%x flg:%lx %d x%px "
5411 "mbx_cmd x%x mbx_flag x%x x%px\n",
5412 ndlp->nlp_rpi, ndlp->nlp_DID, ndlp->nlp_flag,
5413 kref_read(&ndlp->kref), ndlp, mbx_cmd,
5414 mbx_flag, pmb);
5415
5416 /* This ends the default/temporary RPI cleanup logic for this
5417 * ndlp and the node and rpi needs to be released. Free the rpi
5418 * first on an UNREG_LOGIN and then release the final
5419 * references.
5420 */
5421 clear_bit(NLP_REG_LOGIN_SEND, &ndlp->nlp_flag);
5422 if (mbx_cmd == MBX_UNREG_LOGIN)
5423 clear_bit(NLP_UNREG_INP, &ndlp->nlp_flag);
5424 lpfc_nlp_put(ndlp);
5425 lpfc_drop_node(ndlp->vport, ndlp);
5426 }
5427
5428 lpfc_mbox_rsrc_cleanup(phba, pmb, MBOX_THD_UNLOCKED);
5429}
5430
5431/**
5432 * lpfc_cmpl_els_rsp - Completion callback function for els response iocb cmd
5433 * @phba: pointer to lpfc hba data structure.
5434 * @cmdiocb: pointer to lpfc command iocb data structure.
5435 * @rspiocb: pointer to lpfc response iocb data structure.
5436 *
5437 * This routine is the completion callback function for ELS Response IOCB
5438 * command. In normal case, this callback function just properly sets the
5439 * nlp_flag bitmap in the ndlp data structure, if the mbox command reference
5440 * field in the command IOCB is not NULL, the referred mailbox command will
5441 * be send out, and then invokes the lpfc_els_free_iocb() routine to release
5442 * the IOCB.
5443 **/
5444static void
5445lpfc_cmpl_els_rsp(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
5446 struct lpfc_iocbq *rspiocb)
5447{
5448 struct lpfc_nodelist *ndlp = cmdiocb->ndlp;
5449 struct lpfc_vport *vport = ndlp ? ndlp->vport : NULL;
5450 struct Scsi_Host *shost = vport ? lpfc_shost_from_vport(vport) : NULL;
5451 IOCB_t *irsp;
5452 LPFC_MBOXQ_t *mbox = NULL;
5453 u32 ulp_status, ulp_word4, tmo, did, iotag;
5454 u32 cmd;
5455
5456 if (!vport) {
5457 lpfc_printf_log(phba, KERN_WARNING, LOG_ELS,
5458 "3177 null vport in ELS rsp\n");
5459 goto release;
5460 }
5461 if (cmdiocb->context_un.mbox)
5462 mbox = cmdiocb->context_un.mbox;
5463
5464 ulp_status = get_job_ulpstatus(phba, rspiocb);
5465 ulp_word4 = get_job_word4(phba, rspiocb);
5466 did = get_job_els_rsp64_did(phba, cmdiocb);
5467
5468 if (phba->sli_rev == LPFC_SLI_REV4) {
5469 tmo = get_wqe_tmo(cmdiocb);
5470 iotag = get_wqe_reqtag(cmdiocb);
5471 } else {
5472 irsp = &rspiocb->iocb;
5473 tmo = irsp->ulpTimeout;
5474 iotag = irsp->ulpIoTag;
5475 }
5476
5477 /* Check to see if link went down during discovery */
5478 if (!ndlp || lpfc_els_chk_latt(vport)) {
5479 if (mbox)
5480 lpfc_mbox_rsrc_cleanup(phba, mbox, MBOX_THD_UNLOCKED);
5481 goto out;
5482 }
5483
5484 if (!ulp_status && test_bit(NLP_RCV_PLOGI, &ndlp->nlp_flag))
5485 lpfc_check_encryption(phba, ndlp, cmdiocb, rspiocb);
5486
5487 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP,
5488 "ELS rsp cmpl: status:x%x/x%x did:x%x",
5489 ulp_status, ulp_word4, did);
5490 /* ELS response tag <ulpIoTag> completes */
5491 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
5492 "0110 ELS response tag x%x completes fc_flag x%lx"
5493 "Data: x%x x%x x%x x%x x%lx x%x x%x x%x %p %p\n",
5494 iotag, vport->fc_flag, ulp_status, ulp_word4, tmo,
5495 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
5496 ndlp->nlp_rpi, kref_read(&ndlp->kref), mbox, ndlp);
5497 if (mbox && !test_bit(FC_PT2PT, &vport->fc_flag)) {
5498 if (ulp_status == 0 &&
5499 test_bit(NLP_ACC_REGLOGIN, &ndlp->nlp_flag)) {
5500 if (!lpfc_unreg_rpi(vport, ndlp) &&
5501 !test_bit(FC_PT2PT, &vport->fc_flag)) {
5502 if (ndlp->nlp_state == NLP_STE_PLOGI_ISSUE ||
5503 ndlp->nlp_state ==
5504 NLP_STE_REG_LOGIN_ISSUE) {
5505 lpfc_printf_vlog(vport, KERN_INFO,
5506 LOG_DISCOVERY,
5507 "0314 PLOGI recov "
5508 "DID x%x "
5509 "Data: x%x x%x x%lx\n",
5510 ndlp->nlp_DID,
5511 ndlp->nlp_state,
5512 ndlp->nlp_rpi,
5513 ndlp->nlp_flag);
5514 goto out_free_mbox;
5515 }
5516 }
5517
5518 /* Increment reference count to ndlp to hold the
5519 * reference to ndlp for the callback function.
5520 */
5521 mbox->ctx_ndlp = lpfc_nlp_get(ndlp);
5522 if (!mbox->ctx_ndlp)
5523 goto out_free_mbox;
5524
5525 mbox->vport = vport;
5526 if (test_bit(NLP_RM_DFLT_RPI, &ndlp->nlp_flag)) {
5527 mbox->mbox_flag |= LPFC_MBX_IMED_UNREG;
5528 mbox->mbox_cmpl = lpfc_mbx_cmpl_dflt_rpi;
5529 } else {
5530 mbox->mbox_cmpl = lpfc_mbx_cmpl_reg_login;
5531 ndlp->nlp_prev_state = ndlp->nlp_state;
5532 lpfc_nlp_set_state(vport, ndlp,
5533 NLP_STE_REG_LOGIN_ISSUE);
5534 }
5535
5536 set_bit(NLP_REG_LOGIN_SEND, &ndlp->nlp_flag);
5537 if (lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT)
5538 != MBX_NOT_FINISHED)
5539 goto out;
5540
5541 /* Decrement the ndlp reference count we
5542 * set for this failed mailbox command.
5543 */
5544 lpfc_nlp_put(ndlp);
5545 clear_bit(NLP_REG_LOGIN_SEND, &ndlp->nlp_flag);
5546
5547 /* ELS rsp: Cannot issue reg_login for <NPortid> */
5548 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
5549 "0138 ELS rsp: Cannot issue reg_login for x%x "
5550 "Data: x%lx x%x x%x\n",
5551 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
5552 ndlp->nlp_rpi);
5553 }
5554out_free_mbox:
5555 lpfc_mbox_rsrc_cleanup(phba, mbox, MBOX_THD_UNLOCKED);
5556 } else if (mbox && test_bit(FC_PT2PT, &vport->fc_flag) &&
5557 test_bit(NLP_ACC_REGLOGIN, &ndlp->nlp_flag)) {
5558 lpfc_mbx_cmpl_reg_login(phba, mbox);
5559 clear_bit(NLP_ACC_REGLOGIN, &ndlp->nlp_flag);
5560 }
5561out:
5562 if (ndlp && shost) {
5563 if (mbox)
5564 clear_bit(NLP_ACC_REGLOGIN, &ndlp->nlp_flag);
5565 clear_bit(NLP_RM_DFLT_RPI, &ndlp->nlp_flag);
5566 }
5567
5568 /* An SLI4 NPIV instance wants to drop the node at this point under
5569 * these conditions because it doesn't need the login.
5570 */
5571 if (phba->sli_rev == LPFC_SLI_REV4 &&
5572 vport->port_type == LPFC_NPIV_PORT &&
5573 !(ndlp->fc4_xpt_flags & SCSI_XPT_REGD)) {
5574 if (ndlp->nlp_state != NLP_STE_PLOGI_ISSUE &&
5575 ndlp->nlp_state != NLP_STE_REG_LOGIN_ISSUE &&
5576 ndlp->nlp_state != NLP_STE_PRLI_ISSUE) {
5577 /* Drop ndlp if there is no planned or outstanding
5578 * issued PRLI.
5579 *
5580 * In cases when the ndlp is acting as both an initiator
5581 * and target function, let our issued PRLI determine
5582 * the final ndlp kref drop.
5583 */
5584 lpfc_drop_node(vport, ndlp);
5585 }
5586 }
5587
5588 /* The driver's unsolicited deferred FLOGI ACC in Pt2Pt needs to
5589 * release the initial reference because the put after the free_iocb
5590 * call removes only the reference from the defer logic. This FLOGI
5591 * is never registered with the SCSI transport.
5592 */
5593 if (test_bit(FC_PT2PT, &vport->fc_flag) &&
5594 test_and_clear_bit(NLP_FLOGI_DFR_ACC, &ndlp->nlp_flag)) {
5595 lpfc_printf_vlog(vport, KERN_INFO,
5596 LOG_ELS | LOG_NODE | LOG_DISCOVERY,
5597 "3357 Pt2Pt Defer FLOGI ACC ndlp x%px, "
5598 "nflags x%lx, fc_flag x%lx\n",
5599 ndlp, ndlp->nlp_flag,
5600 vport->fc_flag);
5601 cmd = *((u32 *)cmdiocb->cmd_dmabuf->virt);
5602 if (cmd == ELS_CMD_ACC) {
5603 if (!test_and_set_bit(NLP_DROPPED, &ndlp->nlp_flag))
5604 lpfc_nlp_put(ndlp);
5605 }
5606 }
5607
5608release:
5609 /* Release the originating I/O reference. */
5610 lpfc_els_free_iocb(phba, cmdiocb);
5611 lpfc_nlp_put(ndlp);
5612 return;
5613}
5614
5615/**
5616 * lpfc_els_rsp_acc - Prepare and issue an acc response iocb command
5617 * @vport: pointer to a host virtual N_Port data structure.
5618 * @flag: the els command code to be accepted.
5619 * @oldiocb: pointer to the original lpfc command iocb data structure.
5620 * @ndlp: pointer to a node-list data structure.
5621 * @mbox: pointer to the driver internal queue element for mailbox command.
5622 *
5623 * This routine prepares and issues an Accept (ACC) response IOCB
5624 * command. It uses the @flag to properly set up the IOCB field for the
5625 * specific ACC response command to be issued and invokes the
5626 * lpfc_sli_issue_iocb() routine to send out ACC response IOCB. If a
5627 * @mbox pointer is passed in, it will be put into the context_un.mbox
5628 * field of the IOCB for the completion callback function to issue the
5629 * mailbox command to the HBA later when callback is invoked.
5630 *
5631 * Note that the ndlp reference count will be incremented by 1 for holding the
5632 * ndlp and the reference to ndlp will be stored into the ndlp field of
5633 * the IOCB for the completion callback function to the corresponding
5634 * response ELS IOCB command.
5635 *
5636 * Return code
5637 * 0 - Successfully issued acc response
5638 * 1 - Failed to issue acc response
5639 **/
5640int
5641lpfc_els_rsp_acc(struct lpfc_vport *vport, uint32_t flag,
5642 struct lpfc_iocbq *oldiocb, struct lpfc_nodelist *ndlp,
5643 LPFC_MBOXQ_t *mbox)
5644{
5645 struct lpfc_hba *phba = vport->phba;
5646 IOCB_t *icmd;
5647 IOCB_t *oldcmd;
5648 union lpfc_wqe128 *wqe;
5649 union lpfc_wqe128 *oldwqe = &oldiocb->wqe;
5650 struct lpfc_iocbq *elsiocb;
5651 uint8_t *pcmd;
5652 struct serv_parm *sp;
5653 uint16_t cmdsize;
5654 int rc;
5655 ELS_PKT *els_pkt_ptr;
5656 struct fc_els_rdf_resp *rdf_resp;
5657
5658 switch (flag) {
5659 case ELS_CMD_ACC:
5660 cmdsize = sizeof(uint32_t);
5661 elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry,
5662 ndlp, ndlp->nlp_DID, ELS_CMD_ACC);
5663 if (!elsiocb) {
5664 clear_bit(NLP_LOGO_ACC, &ndlp->nlp_flag);
5665 return 1;
5666 }
5667
5668 if (phba->sli_rev == LPFC_SLI_REV4) {
5669 wqe = &elsiocb->wqe;
5670 /* XRI / rx_id */
5671 bf_set(wqe_ctxt_tag, &wqe->xmit_els_rsp.wqe_com,
5672 bf_get(wqe_ctxt_tag,
5673 &oldwqe->xmit_els_rsp.wqe_com));
5674
5675 /* oxid */
5676 bf_set(wqe_rcvoxid, &wqe->xmit_els_rsp.wqe_com,
5677 bf_get(wqe_rcvoxid,
5678 &oldwqe->xmit_els_rsp.wqe_com));
5679 } else {
5680 icmd = &elsiocb->iocb;
5681 oldcmd = &oldiocb->iocb;
5682 icmd->ulpContext = oldcmd->ulpContext; /* Xri / rx_id */
5683 icmd->unsli3.rcvsli3.ox_id =
5684 oldcmd->unsli3.rcvsli3.ox_id;
5685 }
5686
5687 pcmd = elsiocb->cmd_dmabuf->virt;
5688 *((uint32_t *) (pcmd)) = ELS_CMD_ACC;
5689 pcmd += sizeof(uint32_t);
5690
5691 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP,
5692 "Issue ACC: did:x%x flg:x%lx",
5693 ndlp->nlp_DID, ndlp->nlp_flag, 0);
5694 break;
5695 case ELS_CMD_FLOGI:
5696 case ELS_CMD_PLOGI:
5697 cmdsize = (sizeof(struct serv_parm) + sizeof(uint32_t));
5698 elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry,
5699 ndlp, ndlp->nlp_DID, ELS_CMD_ACC);
5700 if (!elsiocb)
5701 return 1;
5702
5703 if (phba->sli_rev == LPFC_SLI_REV4) {
5704 wqe = &elsiocb->wqe;
5705 /* XRI / rx_id */
5706 bf_set(wqe_ctxt_tag, &wqe->xmit_els_rsp.wqe_com,
5707 bf_get(wqe_ctxt_tag,
5708 &oldwqe->xmit_els_rsp.wqe_com));
5709
5710 /* oxid */
5711 bf_set(wqe_rcvoxid, &wqe->xmit_els_rsp.wqe_com,
5712 bf_get(wqe_rcvoxid,
5713 &oldwqe->xmit_els_rsp.wqe_com));
5714 } else {
5715 icmd = &elsiocb->iocb;
5716 oldcmd = &oldiocb->iocb;
5717 icmd->ulpContext = oldcmd->ulpContext; /* Xri / rx_id */
5718 icmd->unsli3.rcvsli3.ox_id =
5719 oldcmd->unsli3.rcvsli3.ox_id;
5720 }
5721
5722 pcmd = (u8 *)elsiocb->cmd_dmabuf->virt;
5723
5724 if (mbox)
5725 elsiocb->context_un.mbox = mbox;
5726
5727 *((uint32_t *) (pcmd)) = ELS_CMD_ACC;
5728 pcmd += sizeof(uint32_t);
5729 sp = (struct serv_parm *)pcmd;
5730
5731 if (flag == ELS_CMD_FLOGI) {
5732 /* Copy the received service parameters back */
5733 memcpy(sp, &phba->fc_fabparam,
5734 sizeof(struct serv_parm));
5735
5736 /* Clear the F_Port bit */
5737 sp->cmn.fPort = 0;
5738
5739 /* Mark all class service parameters as invalid */
5740 sp->cls1.classValid = 0;
5741 sp->cls2.classValid = 0;
5742 sp->cls3.classValid = 0;
5743
5744 /* Copy our worldwide names */
5745 memcpy(&sp->portName, &vport->fc_sparam.portName,
5746 sizeof(struct lpfc_name));
5747 memcpy(&sp->nodeName, &vport->fc_sparam.nodeName,
5748 sizeof(struct lpfc_name));
5749 } else {
5750 memcpy(pcmd, &vport->fc_sparam,
5751 sizeof(struct serv_parm));
5752
5753 sp->cmn.valid_vendor_ver_level = 0;
5754 memset(sp->un.vendorVersion, 0,
5755 sizeof(sp->un.vendorVersion));
5756 if (!test_bit(FC_PT2PT, &vport->fc_flag))
5757 sp->cmn.bbRcvSizeMsb &= 0xF;
5758
5759 /* If our firmware supports this feature, convey that
5760 * info to the target using the vendor specific field.
5761 */
5762 if (phba->sli.sli_flag & LPFC_SLI_SUPPRESS_RSP) {
5763 sp->cmn.valid_vendor_ver_level = 1;
5764 sp->un.vv.vid = cpu_to_be32(LPFC_VV_EMLX_ID);
5765 sp->un.vv.flags =
5766 cpu_to_be32(LPFC_VV_SUPPRESS_RSP);
5767 }
5768 }
5769
5770 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP,
5771 "Issue ACC FLOGI/PLOGI: did:x%x flg:x%lx",
5772 ndlp->nlp_DID, ndlp->nlp_flag, 0);
5773 break;
5774 case ELS_CMD_PRLO:
5775 cmdsize = sizeof(uint32_t) + sizeof(PRLO);
5776 elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry,
5777 ndlp, ndlp->nlp_DID, ELS_CMD_PRLO);
5778 if (!elsiocb)
5779 return 1;
5780
5781 if (phba->sli_rev == LPFC_SLI_REV4) {
5782 wqe = &elsiocb->wqe;
5783 /* XRI / rx_id */
5784 bf_set(wqe_ctxt_tag, &wqe->xmit_els_rsp.wqe_com,
5785 bf_get(wqe_ctxt_tag,
5786 &oldwqe->xmit_els_rsp.wqe_com));
5787
5788 /* oxid */
5789 bf_set(wqe_rcvoxid, &wqe->xmit_els_rsp.wqe_com,
5790 bf_get(wqe_rcvoxid,
5791 &oldwqe->xmit_els_rsp.wqe_com));
5792 } else {
5793 icmd = &elsiocb->iocb;
5794 oldcmd = &oldiocb->iocb;
5795 icmd->ulpContext = oldcmd->ulpContext; /* Xri / rx_id */
5796 icmd->unsli3.rcvsli3.ox_id =
5797 oldcmd->unsli3.rcvsli3.ox_id;
5798 }
5799
5800 pcmd = (u8 *) elsiocb->cmd_dmabuf->virt;
5801
5802 memcpy(pcmd, oldiocb->cmd_dmabuf->virt,
5803 sizeof(uint32_t) + sizeof(PRLO));
5804 *((uint32_t *) (pcmd)) = ELS_CMD_PRLO_ACC;
5805 els_pkt_ptr = (ELS_PKT *) pcmd;
5806 els_pkt_ptr->un.prlo.acceptRspCode = PRLO_REQ_EXECUTED;
5807
5808 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP,
5809 "Issue ACC PRLO: did:x%x flg:x%lx",
5810 ndlp->nlp_DID, ndlp->nlp_flag, 0);
5811 break;
5812 case ELS_CMD_RDF:
5813 cmdsize = sizeof(*rdf_resp);
5814 elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry,
5815 ndlp, ndlp->nlp_DID, ELS_CMD_ACC);
5816 if (!elsiocb)
5817 return 1;
5818
5819 if (phba->sli_rev == LPFC_SLI_REV4) {
5820 wqe = &elsiocb->wqe;
5821 /* XRI / rx_id */
5822 bf_set(wqe_ctxt_tag, &wqe->xmit_els_rsp.wqe_com,
5823 bf_get(wqe_ctxt_tag,
5824 &oldwqe->xmit_els_rsp.wqe_com));
5825
5826 /* oxid */
5827 bf_set(wqe_rcvoxid, &wqe->xmit_els_rsp.wqe_com,
5828 bf_get(wqe_rcvoxid,
5829 &oldwqe->xmit_els_rsp.wqe_com));
5830 } else {
5831 icmd = &elsiocb->iocb;
5832 oldcmd = &oldiocb->iocb;
5833 icmd->ulpContext = oldcmd->ulpContext; /* Xri / rx_id */
5834 icmd->unsli3.rcvsli3.ox_id =
5835 oldcmd->unsli3.rcvsli3.ox_id;
5836 }
5837
5838 pcmd = (u8 *)elsiocb->cmd_dmabuf->virt;
5839 rdf_resp = (struct fc_els_rdf_resp *)pcmd;
5840 memset(rdf_resp, 0, sizeof(*rdf_resp));
5841 rdf_resp->acc_hdr.la_cmd = ELS_LS_ACC;
5842
5843 /* FC-LS-5 specifies desc_list_len shall be set to 12 */
5844 rdf_resp->desc_list_len = cpu_to_be32(12);
5845
5846 /* FC-LS-5 specifies LS REQ Information descriptor */
5847 rdf_resp->lsri.desc_tag = cpu_to_be32(1);
5848 rdf_resp->lsri.desc_len = cpu_to_be32(sizeof(u32));
5849 rdf_resp->lsri.rqst_w0.cmd = ELS_RDF;
5850 break;
5851 default:
5852 return 1;
5853 }
5854 if (test_bit(NLP_LOGO_ACC, &ndlp->nlp_flag)) {
5855 if (!test_bit(NLP_RPI_REGISTERED, &ndlp->nlp_flag) &&
5856 !test_bit(NLP_REG_LOGIN_SEND, &ndlp->nlp_flag))
5857 clear_bit(NLP_LOGO_ACC, &ndlp->nlp_flag);
5858 elsiocb->cmd_cmpl = lpfc_cmpl_els_logo_acc;
5859 } else {
5860 elsiocb->cmd_cmpl = lpfc_cmpl_els_rsp;
5861 }
5862
5863 phba->fc_stat.elsXmitACC++;
5864 elsiocb->ndlp = lpfc_nlp_get(ndlp);
5865 if (!elsiocb->ndlp) {
5866 lpfc_els_free_iocb(phba, elsiocb);
5867 return 1;
5868 }
5869
5870 rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
5871 if (rc == IOCB_ERROR) {
5872 lpfc_els_free_iocb(phba, elsiocb);
5873 lpfc_nlp_put(ndlp);
5874 return 1;
5875 }
5876
5877 /* Xmit ELS ACC response tag <ulpIoTag> */
5878 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
5879 "0128 Xmit ELS ACC response Status: x%x, IoTag: x%x, "
5880 "XRI: x%x, DID: x%x, nlp_flag: x%lx nlp_state: x%x "
5881 "RPI: x%x, fc_flag x%lx refcnt %d\n",
5882 rc, elsiocb->iotag, elsiocb->sli4_xritag,
5883 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
5884 ndlp->nlp_rpi, vport->fc_flag, kref_read(&ndlp->kref));
5885 return 0;
5886}
5887
5888/**
5889 * lpfc_els_rsp_reject - Prepare and issue a rjt response iocb command
5890 * @vport: pointer to a virtual N_Port data structure.
5891 * @rejectError: reject response to issue
5892 * @oldiocb: pointer to the original lpfc command iocb data structure.
5893 * @ndlp: pointer to a node-list data structure.
5894 * @mbox: pointer to the driver internal queue element for mailbox command.
5895 *
5896 * This routine prepares and issue an Reject (RJT) response IOCB
5897 * command. If a @mbox pointer is passed in, it will be put into the
5898 * context_un.mbox field of the IOCB for the completion callback function
5899 * to issue to the HBA later.
5900 *
5901 * Note that the ndlp reference count will be incremented by 1 for holding the
5902 * ndlp and the reference to ndlp will be stored into the ndlp field of
5903 * the IOCB for the completion callback function to the reject response
5904 * ELS IOCB command.
5905 *
5906 * Return code
5907 * 0 - Successfully issued reject response
5908 * 1 - Failed to issue reject response
5909 **/
5910int
5911lpfc_els_rsp_reject(struct lpfc_vport *vport, uint32_t rejectError,
5912 struct lpfc_iocbq *oldiocb, struct lpfc_nodelist *ndlp,
5913 LPFC_MBOXQ_t *mbox)
5914{
5915 int rc;
5916 struct lpfc_hba *phba = vport->phba;
5917 IOCB_t *icmd;
5918 IOCB_t *oldcmd;
5919 union lpfc_wqe128 *wqe;
5920 struct lpfc_iocbq *elsiocb;
5921 uint8_t *pcmd;
5922 uint16_t cmdsize;
5923
5924 cmdsize = 2 * sizeof(uint32_t);
5925 elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry, ndlp,
5926 ndlp->nlp_DID, ELS_CMD_LS_RJT);
5927 if (!elsiocb)
5928 return 1;
5929
5930 if (phba->sli_rev == LPFC_SLI_REV4) {
5931 wqe = &elsiocb->wqe;
5932 bf_set(wqe_ctxt_tag, &wqe->generic.wqe_com,
5933 get_job_ulpcontext(phba, oldiocb)); /* Xri / rx_id */
5934 bf_set(wqe_rcvoxid, &wqe->xmit_els_rsp.wqe_com,
5935 get_job_rcvoxid(phba, oldiocb));
5936 } else {
5937 icmd = &elsiocb->iocb;
5938 oldcmd = &oldiocb->iocb;
5939 icmd->ulpContext = oldcmd->ulpContext; /* Xri / rx_id */
5940 icmd->unsli3.rcvsli3.ox_id = oldcmd->unsli3.rcvsli3.ox_id;
5941 }
5942
5943 pcmd = (uint8_t *)elsiocb->cmd_dmabuf->virt;
5944
5945 *((uint32_t *) (pcmd)) = ELS_CMD_LS_RJT;
5946 pcmd += sizeof(uint32_t);
5947 *((uint32_t *) (pcmd)) = rejectError;
5948
5949 if (mbox)
5950 elsiocb->context_un.mbox = mbox;
5951
5952 /* Xmit ELS RJT <err> response tag <ulpIoTag> */
5953 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
5954 "0129 Xmit ELS RJT x%x response tag x%x "
5955 "xri x%x, did x%x, nlp_flag x%lx, nlp_state x%x, "
5956 "rpi x%x\n",
5957 rejectError, elsiocb->iotag,
5958 get_job_ulpcontext(phba, elsiocb), ndlp->nlp_DID,
5959 ndlp->nlp_flag, ndlp->nlp_state, ndlp->nlp_rpi);
5960 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP,
5961 "Issue LS_RJT: did:x%x flg:x%lx err:x%x",
5962 ndlp->nlp_DID, ndlp->nlp_flag, rejectError);
5963
5964 phba->fc_stat.elsXmitLSRJT++;
5965 elsiocb->cmd_cmpl = lpfc_cmpl_els_rsp;
5966 elsiocb->ndlp = lpfc_nlp_get(ndlp);
5967 if (!elsiocb->ndlp) {
5968 lpfc_els_free_iocb(phba, elsiocb);
5969 return 1;
5970 }
5971
5972 rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
5973 if (rc == IOCB_ERROR) {
5974 lpfc_els_free_iocb(phba, elsiocb);
5975 lpfc_nlp_put(ndlp);
5976 return 1;
5977 }
5978
5979 return 0;
5980}
5981
5982 /**
5983 * lpfc_issue_els_edc_rsp - Exchange Diagnostic Capabilities with the fabric.
5984 * @vport: pointer to a host virtual N_Port data structure.
5985 * @cmdiocb: pointer to the original lpfc command iocb data structure.
5986 * @ndlp: NPort to where rsp is directed
5987 *
5988 * This routine issues an EDC ACC RSP to the F-Port Controller to communicate
5989 * this N_Port's support of hardware signals in its Congestion
5990 * Capabilities Descriptor.
5991 *
5992 * Return code
5993 * 0 - Successfully issued edc rsp command
5994 * 1 - Failed to issue edc rsp command
5995 **/
5996static int
5997lpfc_issue_els_edc_rsp(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
5998 struct lpfc_nodelist *ndlp)
5999{
6000 struct lpfc_hba *phba = vport->phba;
6001 struct fc_els_edc_resp *edc_rsp;
6002 struct fc_tlv_desc *tlv;
6003 struct lpfc_iocbq *elsiocb;
6004 IOCB_t *icmd, *cmd;
6005 union lpfc_wqe128 *wqe;
6006 u32 cgn_desc_size, lft_desc_size;
6007 u16 cmdsize;
6008 uint8_t *pcmd;
6009 int rc;
6010
6011 cmdsize = sizeof(struct fc_els_edc_resp);
6012 cgn_desc_size = sizeof(struct fc_diag_cg_sig_desc);
6013 lft_desc_size = (lpfc_link_is_lds_capable(phba)) ?
6014 sizeof(struct fc_diag_lnkflt_desc) : 0;
6015 cmdsize += cgn_desc_size + lft_desc_size;
6016 elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, cmdiocb->retry,
6017 ndlp, ndlp->nlp_DID, ELS_CMD_ACC);
6018 if (!elsiocb)
6019 return 1;
6020
6021 if (phba->sli_rev == LPFC_SLI_REV4) {
6022 wqe = &elsiocb->wqe;
6023 bf_set(wqe_ctxt_tag, &wqe->generic.wqe_com,
6024 get_job_ulpcontext(phba, cmdiocb)); /* Xri / rx_id */
6025 bf_set(wqe_rcvoxid, &wqe->xmit_els_rsp.wqe_com,
6026 get_job_rcvoxid(phba, cmdiocb));
6027 } else {
6028 icmd = &elsiocb->iocb;
6029 cmd = &cmdiocb->iocb;
6030 icmd->ulpContext = cmd->ulpContext; /* Xri / rx_id */
6031 icmd->unsli3.rcvsli3.ox_id = cmd->unsli3.rcvsli3.ox_id;
6032 }
6033
6034 pcmd = elsiocb->cmd_dmabuf->virt;
6035 memset(pcmd, 0, cmdsize);
6036
6037 edc_rsp = (struct fc_els_edc_resp *)pcmd;
6038 edc_rsp->acc_hdr.la_cmd = ELS_LS_ACC;
6039 edc_rsp->desc_list_len = cpu_to_be32(sizeof(struct fc_els_lsri_desc) +
6040 cgn_desc_size + lft_desc_size);
6041 edc_rsp->lsri.desc_tag = cpu_to_be32(ELS_DTAG_LS_REQ_INFO);
6042 edc_rsp->lsri.desc_len = cpu_to_be32(
6043 FC_TLV_DESC_LENGTH_FROM_SZ(struct fc_els_lsri_desc));
6044 edc_rsp->lsri.rqst_w0.cmd = ELS_EDC;
6045 tlv = edc_rsp->desc;
6046 lpfc_format_edc_cgn_desc(phba, tlv);
6047 tlv = fc_tlv_next_desc(tlv);
6048 if (lft_desc_size)
6049 lpfc_format_edc_lft_desc(phba, tlv);
6050
6051 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP,
6052 "Issue EDC ACC: did:x%x flg:x%lx refcnt %d",
6053 ndlp->nlp_DID, ndlp->nlp_flag,
6054 kref_read(&ndlp->kref));
6055 elsiocb->cmd_cmpl = lpfc_cmpl_els_rsp;
6056
6057 phba->fc_stat.elsXmitACC++;
6058 elsiocb->ndlp = lpfc_nlp_get(ndlp);
6059 if (!elsiocb->ndlp) {
6060 lpfc_els_free_iocb(phba, elsiocb);
6061 return 1;
6062 }
6063
6064 rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
6065 if (rc == IOCB_ERROR) {
6066 lpfc_els_free_iocb(phba, elsiocb);
6067 lpfc_nlp_put(ndlp);
6068 return 1;
6069 }
6070
6071 /* Xmit ELS ACC response tag <ulpIoTag> */
6072 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
6073 "0152 Xmit EDC ACC response Status: x%x, IoTag: x%x, "
6074 "XRI: x%x, DID: x%x, nlp_flag: x%lx nlp_state: x%x "
6075 "RPI: x%x, fc_flag x%lx\n",
6076 rc, elsiocb->iotag, elsiocb->sli4_xritag,
6077 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
6078 ndlp->nlp_rpi, vport->fc_flag);
6079
6080 return 0;
6081}
6082
6083/**
6084 * lpfc_els_rsp_adisc_acc - Prepare and issue acc response to adisc iocb cmd
6085 * @vport: pointer to a virtual N_Port data structure.
6086 * @oldiocb: pointer to the original lpfc command iocb data structure.
6087 * @ndlp: pointer to a node-list data structure.
6088 *
6089 * This routine prepares and issues an Accept (ACC) response to Address
6090 * Discover (ADISC) ELS command. It simply prepares the payload of the IOCB
6091 * and invokes the lpfc_sli_issue_iocb() routine to send out the command.
6092 *
6093 * Note that the ndlp reference count will be incremented by 1 for holding the
6094 * ndlp and the reference to ndlp will be stored into the ndlp field of
6095 * the IOCB for the completion callback function to the ADISC Accept response
6096 * ELS IOCB command.
6097 *
6098 * Return code
6099 * 0 - Successfully issued acc adisc response
6100 * 1 - Failed to issue adisc acc response
6101 **/
6102int
6103lpfc_els_rsp_adisc_acc(struct lpfc_vport *vport, struct lpfc_iocbq *oldiocb,
6104 struct lpfc_nodelist *ndlp)
6105{
6106 struct lpfc_hba *phba = vport->phba;
6107 ADISC *ap;
6108 IOCB_t *icmd, *oldcmd;
6109 union lpfc_wqe128 *wqe;
6110 struct lpfc_iocbq *elsiocb;
6111 uint8_t *pcmd;
6112 uint16_t cmdsize;
6113 int rc;
6114 u32 ulp_context;
6115
6116 cmdsize = sizeof(uint32_t) + sizeof(ADISC);
6117 elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry, ndlp,
6118 ndlp->nlp_DID, ELS_CMD_ACC);
6119 if (!elsiocb)
6120 return 1;
6121
6122 if (phba->sli_rev == LPFC_SLI_REV4) {
6123 wqe = &elsiocb->wqe;
6124 /* XRI / rx_id */
6125 bf_set(wqe_ctxt_tag, &wqe->generic.wqe_com,
6126 get_job_ulpcontext(phba, oldiocb));
6127 ulp_context = get_job_ulpcontext(phba, elsiocb);
6128 /* oxid */
6129 bf_set(wqe_rcvoxid, &wqe->xmit_els_rsp.wqe_com,
6130 get_job_rcvoxid(phba, oldiocb));
6131 } else {
6132 icmd = &elsiocb->iocb;
6133 oldcmd = &oldiocb->iocb;
6134 icmd->ulpContext = oldcmd->ulpContext; /* Xri / rx_id */
6135 ulp_context = elsiocb->iocb.ulpContext;
6136 icmd->unsli3.rcvsli3.ox_id =
6137 oldcmd->unsli3.rcvsli3.ox_id;
6138 }
6139
6140 /* Xmit ADISC ACC response tag <ulpIoTag> */
6141 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
6142 "0130 Xmit ADISC ACC response iotag x%x xri: "
6143 "x%x, did x%x, nlp_flag x%lx, nlp_state x%x rpi x%x\n",
6144 elsiocb->iotag, ulp_context,
6145 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
6146 ndlp->nlp_rpi);
6147 pcmd = (uint8_t *)elsiocb->cmd_dmabuf->virt;
6148
6149 *((uint32_t *) (pcmd)) = ELS_CMD_ACC;
6150 pcmd += sizeof(uint32_t);
6151
6152 ap = (ADISC *) (pcmd);
6153 ap->hardAL_PA = phba->fc_pref_ALPA;
6154 memcpy(&ap->portName, &vport->fc_portname, sizeof(struct lpfc_name));
6155 memcpy(&ap->nodeName, &vport->fc_nodename, sizeof(struct lpfc_name));
6156 ap->DID = be32_to_cpu(vport->fc_myDID);
6157
6158 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP,
6159 "Issue ACC ADISC: did:x%x flg:x%lx refcnt %d",
6160 ndlp->nlp_DID, ndlp->nlp_flag, kref_read(&ndlp->kref));
6161
6162 phba->fc_stat.elsXmitACC++;
6163 elsiocb->cmd_cmpl = lpfc_cmpl_els_rsp;
6164 elsiocb->ndlp = lpfc_nlp_get(ndlp);
6165 if (!elsiocb->ndlp) {
6166 lpfc_els_free_iocb(phba, elsiocb);
6167 return 1;
6168 }
6169
6170 rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
6171 if (rc == IOCB_ERROR) {
6172 lpfc_els_free_iocb(phba, elsiocb);
6173 lpfc_nlp_put(ndlp);
6174 return 1;
6175 }
6176
6177 return 0;
6178}
6179
6180/**
6181 * lpfc_els_rsp_prli_acc - Prepare and issue acc response to prli iocb cmd
6182 * @vport: pointer to a virtual N_Port data structure.
6183 * @oldiocb: pointer to the original lpfc command iocb data structure.
6184 * @ndlp: pointer to a node-list data structure.
6185 *
6186 * This routine prepares and issues an Accept (ACC) response to Process
6187 * Login (PRLI) ELS command. It simply prepares the payload of the IOCB
6188 * and invokes the lpfc_sli_issue_iocb() routine to send out the command.
6189 *
6190 * Note that the ndlp reference count will be incremented by 1 for holding the
6191 * ndlp and the reference to ndlp will be stored into the ndlp field of
6192 * the IOCB for the completion callback function to the PRLI Accept response
6193 * ELS IOCB command.
6194 *
6195 * Return code
6196 * 0 - Successfully issued acc prli response
6197 * 1 - Failed to issue acc prli response
6198 **/
6199int
6200lpfc_els_rsp_prli_acc(struct lpfc_vport *vport, struct lpfc_iocbq *oldiocb,
6201 struct lpfc_nodelist *ndlp)
6202{
6203 struct lpfc_hba *phba = vport->phba;
6204 PRLI *npr;
6205 struct lpfc_nvme_prli *npr_nvme;
6206 lpfc_vpd_t *vpd;
6207 IOCB_t *icmd;
6208 IOCB_t *oldcmd;
6209 union lpfc_wqe128 *wqe;
6210 struct lpfc_iocbq *elsiocb;
6211 uint8_t *pcmd;
6212 uint16_t cmdsize;
6213 uint32_t prli_fc4_req, *req_payload;
6214 struct lpfc_dmabuf *req_buf;
6215 int rc;
6216 u32 elsrspcmd, ulp_context;
6217
6218 /* Need the incoming PRLI payload to determine if the ACC is for an
6219 * FC4 or NVME PRLI type. The PRLI type is at word 1.
6220 */
6221 req_buf = oldiocb->cmd_dmabuf;
6222 req_payload = (((uint32_t *)req_buf->virt) + 1);
6223
6224 /* PRLI type payload is at byte 3 for FCP or NVME. */
6225 prli_fc4_req = be32_to_cpu(*req_payload);
6226 prli_fc4_req = (prli_fc4_req >> 24) & 0xff;
6227 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
6228 "6127 PRLI_ACC: Req Type x%x, Word1 x%08x\n",
6229 prli_fc4_req, *((uint32_t *)req_payload));
6230
6231 if (prli_fc4_req == PRLI_FCP_TYPE) {
6232 cmdsize = sizeof(uint32_t) + sizeof(PRLI);
6233 elsrspcmd = (ELS_CMD_ACC | (ELS_CMD_PRLI & ~ELS_RSP_MASK));
6234 } else if (prli_fc4_req == PRLI_NVME_TYPE) {
6235 cmdsize = sizeof(uint32_t) + sizeof(struct lpfc_nvme_prli);
6236 elsrspcmd = (ELS_CMD_ACC | (ELS_CMD_NVMEPRLI & ~ELS_RSP_MASK));
6237 } else {
6238 return 1;
6239 }
6240
6241 elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry, ndlp,
6242 ndlp->nlp_DID, elsrspcmd);
6243 if (!elsiocb)
6244 return 1;
6245
6246 if (phba->sli_rev == LPFC_SLI_REV4) {
6247 wqe = &elsiocb->wqe;
6248 bf_set(wqe_ctxt_tag, &wqe->generic.wqe_com,
6249 get_job_ulpcontext(phba, oldiocb)); /* Xri / rx_id */
6250 ulp_context = get_job_ulpcontext(phba, elsiocb);
6251 bf_set(wqe_rcvoxid, &wqe->xmit_els_rsp.wqe_com,
6252 get_job_rcvoxid(phba, oldiocb));
6253 } else {
6254 icmd = &elsiocb->iocb;
6255 oldcmd = &oldiocb->iocb;
6256 icmd->ulpContext = oldcmd->ulpContext; /* Xri / rx_id */
6257 ulp_context = elsiocb->iocb.ulpContext;
6258 icmd->unsli3.rcvsli3.ox_id =
6259 oldcmd->unsli3.rcvsli3.ox_id;
6260 }
6261
6262 /* Xmit PRLI ACC response tag <ulpIoTag> */
6263 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
6264 "0131 Xmit PRLI ACC response tag x%x xri x%x, "
6265 "did x%x, nlp_flag x%lx, nlp_state x%x, rpi x%x\n",
6266 elsiocb->iotag, ulp_context,
6267 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
6268 ndlp->nlp_rpi);
6269 pcmd = (uint8_t *)elsiocb->cmd_dmabuf->virt;
6270 memset(pcmd, 0, cmdsize);
6271
6272 *((uint32_t *)(pcmd)) = elsrspcmd;
6273 pcmd += sizeof(uint32_t);
6274
6275 /* For PRLI, remainder of payload is PRLI parameter page */
6276 vpd = &phba->vpd;
6277
6278 if (prli_fc4_req == PRLI_FCP_TYPE) {
6279 /*
6280 * If the remote port is a target and our firmware version
6281 * is 3.20 or later, set the following bits for FC-TAPE
6282 * support.
6283 */
6284 npr = (PRLI *) pcmd;
6285 if ((ndlp->nlp_type & NLP_FCP_TARGET) &&
6286 (vpd->rev.feaLevelHigh >= 0x02)) {
6287 npr->ConfmComplAllowed = 1;
6288 npr->Retry = 1;
6289 npr->TaskRetryIdReq = 1;
6290 }
6291 npr->acceptRspCode = PRLI_REQ_EXECUTED;
6292
6293 /* Set image pair for complementary pairs only. */
6294 if (ndlp->nlp_type & NLP_FCP_TARGET)
6295 npr->estabImagePair = 1;
6296 else
6297 npr->estabImagePair = 0;
6298 npr->readXferRdyDis = 1;
6299 npr->ConfmComplAllowed = 1;
6300 npr->prliType = PRLI_FCP_TYPE;
6301 npr->initiatorFunc = 1;
6302
6303 /* Xmit PRLI ACC response tag <ulpIoTag> */
6304 lpfc_printf_vlog(vport, KERN_INFO,
6305 LOG_ELS | LOG_NODE | LOG_DISCOVERY,
6306 "6014 FCP issue PRLI ACC imgpair %d "
6307 "retry %d task %d\n",
6308 npr->estabImagePair,
6309 npr->Retry, npr->TaskRetryIdReq);
6310
6311 } else if (prli_fc4_req == PRLI_NVME_TYPE) {
6312 /* Respond with an NVME PRLI Type */
6313 npr_nvme = (struct lpfc_nvme_prli *) pcmd;
6314 bf_set(prli_type_code, npr_nvme, PRLI_NVME_TYPE);
6315 bf_set(prli_estabImagePair, npr_nvme, 0); /* Should be 0 */
6316 bf_set(prli_acc_rsp_code, npr_nvme, PRLI_REQ_EXECUTED);
6317 if (phba->nvmet_support) {
6318 bf_set(prli_tgt, npr_nvme, 1);
6319 bf_set(prli_disc, npr_nvme, 1);
6320 if (phba->cfg_nvme_enable_fb) {
6321 bf_set(prli_fba, npr_nvme, 1);
6322
6323 /* TBD. Target mode needs to post buffers
6324 * that support the configured first burst
6325 * byte size.
6326 */
6327 bf_set(prli_fb_sz, npr_nvme,
6328 phba->cfg_nvmet_fb_size);
6329 }
6330 } else {
6331 bf_set(prli_init, npr_nvme, 1);
6332 }
6333
6334 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_DISC,
6335 "6015 NVME issue PRLI ACC word1 x%08x "
6336 "word4 x%08x word5 x%08x flag x%lx, "
6337 "fcp_info x%x nlp_type x%x\n",
6338 npr_nvme->word1, npr_nvme->word4,
6339 npr_nvme->word5, ndlp->nlp_flag,
6340 ndlp->nlp_fcp_info, ndlp->nlp_type);
6341 npr_nvme->word1 = cpu_to_be32(npr_nvme->word1);
6342 npr_nvme->word4 = cpu_to_be32(npr_nvme->word4);
6343 npr_nvme->word5 = cpu_to_be32(npr_nvme->word5);
6344 } else
6345 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
6346 "6128 Unknown FC_TYPE x%x x%x ndlp x%06x\n",
6347 prli_fc4_req, ndlp->nlp_fc4_type,
6348 ndlp->nlp_DID);
6349
6350 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP,
6351 "Issue ACC PRLI: did:x%x flg:x%lx",
6352 ndlp->nlp_DID, ndlp->nlp_flag, kref_read(&ndlp->kref));
6353
6354 phba->fc_stat.elsXmitACC++;
6355 elsiocb->cmd_cmpl = lpfc_cmpl_els_rsp;
6356 elsiocb->ndlp = lpfc_nlp_get(ndlp);
6357 if (!elsiocb->ndlp) {
6358 lpfc_els_free_iocb(phba, elsiocb);
6359 return 1;
6360 }
6361
6362 rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
6363 if (rc == IOCB_ERROR) {
6364 lpfc_els_free_iocb(phba, elsiocb);
6365 lpfc_nlp_put(ndlp);
6366 return 1;
6367 }
6368
6369 return 0;
6370}
6371
6372/**
6373 * lpfc_els_rsp_rnid_acc - Issue rnid acc response iocb command
6374 * @vport: pointer to a virtual N_Port data structure.
6375 * @format: rnid command format.
6376 * @oldiocb: pointer to the original lpfc command iocb data structure.
6377 * @ndlp: pointer to a node-list data structure.
6378 *
6379 * This routine issues a Request Node Identification Data (RNID) Accept
6380 * (ACC) response. It constructs the RNID ACC response command according to
6381 * the proper @format and then calls the lpfc_sli_issue_iocb() routine to
6382 * issue the response.
6383 *
6384 * Note that the ndlp reference count will be incremented by 1 for holding the
6385 * ndlp and the reference to ndlp will be stored into the ndlp field of
6386 * the IOCB for the completion callback function.
6387 *
6388 * Return code
6389 * 0 - Successfully issued acc rnid response
6390 * 1 - Failed to issue acc rnid response
6391 **/
6392static int
6393lpfc_els_rsp_rnid_acc(struct lpfc_vport *vport, uint8_t format,
6394 struct lpfc_iocbq *oldiocb, struct lpfc_nodelist *ndlp)
6395{
6396 struct lpfc_hba *phba = vport->phba;
6397 RNID *rn;
6398 IOCB_t *icmd, *oldcmd;
6399 union lpfc_wqe128 *wqe;
6400 struct lpfc_iocbq *elsiocb;
6401 uint8_t *pcmd;
6402 uint16_t cmdsize;
6403 int rc;
6404 u32 ulp_context;
6405
6406 cmdsize = sizeof(uint32_t) + sizeof(uint32_t)
6407 + (2 * sizeof(struct lpfc_name));
6408 if (format)
6409 cmdsize += sizeof(RNID_TOP_DISC);
6410
6411 elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry, ndlp,
6412 ndlp->nlp_DID, ELS_CMD_ACC);
6413 if (!elsiocb)
6414 return 1;
6415
6416 if (phba->sli_rev == LPFC_SLI_REV4) {
6417 wqe = &elsiocb->wqe;
6418 bf_set(wqe_ctxt_tag, &wqe->generic.wqe_com,
6419 get_job_ulpcontext(phba, oldiocb)); /* Xri / rx_id */
6420 ulp_context = get_job_ulpcontext(phba, elsiocb);
6421 bf_set(wqe_rcvoxid, &wqe->xmit_els_rsp.wqe_com,
6422 get_job_rcvoxid(phba, oldiocb));
6423 } else {
6424 icmd = &elsiocb->iocb;
6425 oldcmd = &oldiocb->iocb;
6426 icmd->ulpContext = oldcmd->ulpContext; /* Xri / rx_id */
6427 ulp_context = elsiocb->iocb.ulpContext;
6428 icmd->unsli3.rcvsli3.ox_id =
6429 oldcmd->unsli3.rcvsli3.ox_id;
6430 }
6431
6432 /* Xmit RNID ACC response tag <ulpIoTag> */
6433 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
6434 "0132 Xmit RNID ACC response tag x%x xri x%x\n",
6435 elsiocb->iotag, ulp_context);
6436 pcmd = (uint8_t *)elsiocb->cmd_dmabuf->virt;
6437 *((uint32_t *) (pcmd)) = ELS_CMD_ACC;
6438 pcmd += sizeof(uint32_t);
6439
6440 memset(pcmd, 0, sizeof(RNID));
6441 rn = (RNID *) (pcmd);
6442 rn->Format = format;
6443 rn->CommonLen = (2 * sizeof(struct lpfc_name));
6444 memcpy(&rn->portName, &vport->fc_portname, sizeof(struct lpfc_name));
6445 memcpy(&rn->nodeName, &vport->fc_nodename, sizeof(struct lpfc_name));
6446 switch (format) {
6447 case 0:
6448 rn->SpecificLen = 0;
6449 break;
6450 case RNID_TOPOLOGY_DISC:
6451 rn->SpecificLen = sizeof(RNID_TOP_DISC);
6452 memcpy(&rn->un.topologyDisc.portName,
6453 &vport->fc_portname, sizeof(struct lpfc_name));
6454 rn->un.topologyDisc.unitType = RNID_HBA;
6455 rn->un.topologyDisc.physPort = 0;
6456 rn->un.topologyDisc.attachedNodes = 0;
6457 break;
6458 default:
6459 rn->CommonLen = 0;
6460 rn->SpecificLen = 0;
6461 break;
6462 }
6463
6464 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP,
6465 "Issue ACC RNID: did:x%x flg:x%lx refcnt %d",
6466 ndlp->nlp_DID, ndlp->nlp_flag, kref_read(&ndlp->kref));
6467
6468 phba->fc_stat.elsXmitACC++;
6469 elsiocb->cmd_cmpl = lpfc_cmpl_els_rsp;
6470 elsiocb->ndlp = lpfc_nlp_get(ndlp);
6471 if (!elsiocb->ndlp) {
6472 lpfc_els_free_iocb(phba, elsiocb);
6473 return 1;
6474 }
6475
6476 rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
6477 if (rc == IOCB_ERROR) {
6478 lpfc_els_free_iocb(phba, elsiocb);
6479 lpfc_nlp_put(ndlp);
6480 return 1;
6481 }
6482
6483 return 0;
6484}
6485
6486/**
6487 * lpfc_els_clear_rrq - Clear the rq that this rrq describes.
6488 * @vport: pointer to a virtual N_Port data structure.
6489 * @iocb: pointer to the lpfc command iocb data structure.
6490 * @ndlp: pointer to a node-list data structure.
6491 *
6492 * Return
6493 **/
6494static void
6495lpfc_els_clear_rrq(struct lpfc_vport *vport,
6496 struct lpfc_iocbq *iocb, struct lpfc_nodelist *ndlp)
6497{
6498 struct lpfc_hba *phba = vport->phba;
6499 uint8_t *pcmd;
6500 struct RRQ *rrq;
6501 uint16_t rxid;
6502 uint16_t xri;
6503 struct lpfc_node_rrq *prrq;
6504
6505
6506 pcmd = (uint8_t *)iocb->cmd_dmabuf->virt;
6507 pcmd += sizeof(uint32_t);
6508 rrq = (struct RRQ *)pcmd;
6509 rrq->rrq_exchg = be32_to_cpu(rrq->rrq_exchg);
6510 rxid = bf_get(rrq_rxid, rrq);
6511
6512 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
6513 "2883 Clear RRQ for SID:x%x OXID:x%x RXID:x%x"
6514 " x%x x%x\n",
6515 be32_to_cpu(bf_get(rrq_did, rrq)),
6516 bf_get(rrq_oxid, rrq),
6517 rxid,
6518 get_wqe_reqtag(iocb),
6519 get_job_ulpcontext(phba, iocb));
6520
6521 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP,
6522 "Clear RRQ: did:x%x flg:x%lx exchg:x%.08x",
6523 ndlp->nlp_DID, ndlp->nlp_flag, rrq->rrq_exchg);
6524 if (vport->fc_myDID == be32_to_cpu(bf_get(rrq_did, rrq)))
6525 xri = bf_get(rrq_oxid, rrq);
6526 else
6527 xri = rxid;
6528 prrq = lpfc_get_active_rrq(vport, xri, ndlp->nlp_DID);
6529 if (prrq)
6530 lpfc_clr_rrq_active(phba, xri, prrq);
6531 return;
6532}
6533
6534/**
6535 * lpfc_els_rsp_echo_acc - Issue echo acc response
6536 * @vport: pointer to a virtual N_Port data structure.
6537 * @data: pointer to echo data to return in the accept.
6538 * @oldiocb: pointer to the original lpfc command iocb data structure.
6539 * @ndlp: pointer to a node-list data structure.
6540 *
6541 * Return code
6542 * 0 - Successfully issued acc echo response
6543 * 1 - Failed to issue acc echo response
6544 **/
6545static int
6546lpfc_els_rsp_echo_acc(struct lpfc_vport *vport, uint8_t *data,
6547 struct lpfc_iocbq *oldiocb, struct lpfc_nodelist *ndlp)
6548{
6549 struct lpfc_hba *phba = vport->phba;
6550 IOCB_t *icmd, *oldcmd;
6551 union lpfc_wqe128 *wqe;
6552 struct lpfc_iocbq *elsiocb;
6553 uint8_t *pcmd;
6554 uint16_t cmdsize;
6555 int rc;
6556 u32 ulp_context;
6557
6558 if (phba->sli_rev == LPFC_SLI_REV4)
6559 cmdsize = oldiocb->wcqe_cmpl.total_data_placed;
6560 else
6561 cmdsize = oldiocb->iocb.unsli3.rcvsli3.acc_len;
6562
6563 /* The accumulated length can exceed the BPL_SIZE. For
6564 * now, use this as the limit
6565 */
6566 if (cmdsize > LPFC_BPL_SIZE)
6567 cmdsize = LPFC_BPL_SIZE;
6568 elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry, ndlp,
6569 ndlp->nlp_DID, ELS_CMD_ACC);
6570 if (!elsiocb)
6571 return 1;
6572
6573 if (phba->sli_rev == LPFC_SLI_REV4) {
6574 wqe = &elsiocb->wqe;
6575 bf_set(wqe_ctxt_tag, &wqe->generic.wqe_com,
6576 get_job_ulpcontext(phba, oldiocb)); /* Xri / rx_id */
6577 ulp_context = get_job_ulpcontext(phba, elsiocb);
6578 bf_set(wqe_rcvoxid, &wqe->xmit_els_rsp.wqe_com,
6579 get_job_rcvoxid(phba, oldiocb));
6580 } else {
6581 icmd = &elsiocb->iocb;
6582 oldcmd = &oldiocb->iocb;
6583 icmd->ulpContext = oldcmd->ulpContext; /* Xri / rx_id */
6584 ulp_context = elsiocb->iocb.ulpContext;
6585 icmd->unsli3.rcvsli3.ox_id =
6586 oldcmd->unsli3.rcvsli3.ox_id;
6587 }
6588
6589 /* Xmit ECHO ACC response tag <ulpIoTag> */
6590 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
6591 "2876 Xmit ECHO ACC response tag x%x xri x%x\n",
6592 elsiocb->iotag, ulp_context);
6593 pcmd = (uint8_t *)elsiocb->cmd_dmabuf->virt;
6594 *((uint32_t *) (pcmd)) = ELS_CMD_ACC;
6595 pcmd += sizeof(uint32_t);
6596 memcpy(pcmd, data, cmdsize - sizeof(uint32_t));
6597
6598 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP,
6599 "Issue ACC ECHO: did:x%x flg:x%lx refcnt %d",
6600 ndlp->nlp_DID, ndlp->nlp_flag, kref_read(&ndlp->kref));
6601
6602 phba->fc_stat.elsXmitACC++;
6603 elsiocb->cmd_cmpl = lpfc_cmpl_els_rsp;
6604 elsiocb->ndlp = lpfc_nlp_get(ndlp);
6605 if (!elsiocb->ndlp) {
6606 lpfc_els_free_iocb(phba, elsiocb);
6607 return 1;
6608 }
6609
6610 rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
6611 if (rc == IOCB_ERROR) {
6612 lpfc_els_free_iocb(phba, elsiocb);
6613 lpfc_nlp_put(ndlp);
6614 return 1;
6615 }
6616
6617 return 0;
6618}
6619
6620/**
6621 * lpfc_els_disc_adisc - Issue remaining adisc iocbs to npr nodes of a vport
6622 * @vport: pointer to a host virtual N_Port data structure.
6623 *
6624 * This routine issues Address Discover (ADISC) ELS commands to those
6625 * N_Ports which are in node port recovery state and ADISC has not been issued
6626 * for the @vport. Each time an ELS ADISC IOCB is issued by invoking the
6627 * lpfc_issue_els_adisc() routine, the per @vport number of discover count
6628 * (num_disc_nodes) shall be incremented. If the num_disc_nodes reaches a
6629 * pre-configured threshold (cfg_discovery_threads), the @vport fc_flag will
6630 * be marked with FC_NLP_MORE bit and the process of issuing remaining ADISC
6631 * IOCBs quit for later pick up. On the other hand, after walking through
6632 * all the ndlps with the @vport and there is none ADISC IOCB issued, the
6633 * @vport fc_flag shall be cleared with FC_NLP_MORE bit indicating there is
6634 * no more ADISC need to be sent.
6635 *
6636 * Return code
6637 * The number of N_Ports with adisc issued.
6638 **/
6639int
6640lpfc_els_disc_adisc(struct lpfc_vport *vport)
6641{
6642 struct lpfc_nodelist *ndlp, *next_ndlp;
6643 int sentadisc = 0;
6644
6645 /* go thru NPR nodes and issue any remaining ELS ADISCs */
6646 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) {
6647
6648 if (ndlp->nlp_state != NLP_STE_NPR_NODE ||
6649 !test_bit(NLP_NPR_ADISC, &ndlp->nlp_flag))
6650 continue;
6651
6652 clear_bit(NLP_NPR_ADISC, &ndlp->nlp_flag);
6653
6654 if (!test_bit(NLP_NPR_2B_DISC, &ndlp->nlp_flag)) {
6655 /* This node was marked for ADISC but was not picked
6656 * for discovery. This is possible if the node was
6657 * missing in gidft response.
6658 *
6659 * At time of marking node for ADISC, we skipped unreg
6660 * from backend
6661 */
6662 lpfc_nlp_unreg_node(vport, ndlp);
6663 lpfc_unreg_rpi(vport, ndlp);
6664 continue;
6665 }
6666
6667 ndlp->nlp_prev_state = ndlp->nlp_state;
6668 lpfc_nlp_set_state(vport, ndlp, NLP_STE_ADISC_ISSUE);
6669 lpfc_issue_els_adisc(vport, ndlp, 0);
6670 sentadisc++;
6671 vport->num_disc_nodes++;
6672 if (vport->num_disc_nodes >=
6673 vport->cfg_discovery_threads) {
6674 set_bit(FC_NLP_MORE, &vport->fc_flag);
6675 break;
6676 }
6677
6678 }
6679 if (sentadisc == 0)
6680 clear_bit(FC_NLP_MORE, &vport->fc_flag);
6681 return sentadisc;
6682}
6683
6684/**
6685 * lpfc_els_disc_plogi - Issue plogi for all npr nodes of a vport before adisc
6686 * @vport: pointer to a host virtual N_Port data structure.
6687 *
6688 * This routine issues Port Login (PLOGI) ELS commands to all the N_Ports
6689 * which are in node port recovery state, with a @vport. Each time an ELS
6690 * ADISC PLOGI IOCB is issued by invoking the lpfc_issue_els_plogi() routine,
6691 * the per @vport number of discover count (num_disc_nodes) shall be
6692 * incremented. If the num_disc_nodes reaches a pre-configured threshold
6693 * (cfg_discovery_threads), the @vport fc_flag will be marked with FC_NLP_MORE
6694 * bit set and quit the process of issuing remaining ADISC PLOGIN IOCBs for
6695 * later pick up. On the other hand, after walking through all the ndlps with
6696 * the @vport and there is none ADISC PLOGI IOCB issued, the @vport fc_flag
6697 * shall be cleared with the FC_NLP_MORE bit indicating there is no more ADISC
6698 * PLOGI need to be sent.
6699 *
6700 * Return code
6701 * The number of N_Ports with plogi issued.
6702 **/
6703int
6704lpfc_els_disc_plogi(struct lpfc_vport *vport)
6705{
6706 struct lpfc_nodelist *ndlp, *next_ndlp;
6707 int sentplogi = 0;
6708
6709 /* go thru NPR nodes and issue any remaining ELS PLOGIs */
6710 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) {
6711 if (ndlp->nlp_state == NLP_STE_NPR_NODE &&
6712 test_bit(NLP_NPR_2B_DISC, &ndlp->nlp_flag) &&
6713 !test_bit(NLP_DELAY_TMO, &ndlp->nlp_flag) &&
6714 !test_bit(NLP_NPR_ADISC, &ndlp->nlp_flag)) {
6715 ndlp->nlp_prev_state = ndlp->nlp_state;
6716 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
6717 lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
6718 sentplogi++;
6719 vport->num_disc_nodes++;
6720 if (vport->num_disc_nodes >=
6721 vport->cfg_discovery_threads) {
6722 set_bit(FC_NLP_MORE, &vport->fc_flag);
6723 break;
6724 }
6725 }
6726 }
6727
6728 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
6729 "6452 Discover PLOGI %d flag x%lx\n",
6730 sentplogi, vport->fc_flag);
6731
6732 if (sentplogi)
6733 lpfc_set_disctmo(vport);
6734 else
6735 clear_bit(FC_NLP_MORE, &vport->fc_flag);
6736 return sentplogi;
6737}
6738
6739static uint32_t
6740lpfc_rdp_res_link_service(struct fc_rdp_link_service_desc *desc,
6741 uint32_t word0)
6742{
6743
6744 desc->tag = cpu_to_be32(RDP_LINK_SERVICE_DESC_TAG);
6745 desc->payload.els_req = word0;
6746 desc->length = cpu_to_be32(sizeof(desc->payload));
6747
6748 return sizeof(struct fc_rdp_link_service_desc);
6749}
6750
6751static uint32_t
6752lpfc_rdp_res_sfp_desc(struct fc_rdp_sfp_desc *desc,
6753 uint8_t *page_a0, uint8_t *page_a2)
6754{
6755 uint16_t wavelength;
6756 uint16_t temperature;
6757 uint16_t rx_power;
6758 uint16_t tx_bias;
6759 uint16_t tx_power;
6760 uint16_t vcc;
6761 uint16_t flag = 0;
6762 struct sff_trasnceiver_codes_byte4 *trasn_code_byte4;
6763 struct sff_trasnceiver_codes_byte5 *trasn_code_byte5;
6764
6765 desc->tag = cpu_to_be32(RDP_SFP_DESC_TAG);
6766
6767 trasn_code_byte4 = (struct sff_trasnceiver_codes_byte4 *)
6768 &page_a0[SSF_TRANSCEIVER_CODE_B4];
6769 trasn_code_byte5 = (struct sff_trasnceiver_codes_byte5 *)
6770 &page_a0[SSF_TRANSCEIVER_CODE_B5];
6771
6772 if ((trasn_code_byte4->fc_sw_laser) ||
6773 (trasn_code_byte5->fc_sw_laser_sl) ||
6774 (trasn_code_byte5->fc_sw_laser_sn)) { /* check if its short WL */
6775 flag |= (SFP_FLAG_PT_SWLASER << SFP_FLAG_PT_SHIFT);
6776 } else if (trasn_code_byte4->fc_lw_laser) {
6777 wavelength = (page_a0[SSF_WAVELENGTH_B1] << 8) |
6778 page_a0[SSF_WAVELENGTH_B0];
6779 if (wavelength == SFP_WAVELENGTH_LC1310)
6780 flag |= SFP_FLAG_PT_LWLASER_LC1310 << SFP_FLAG_PT_SHIFT;
6781 if (wavelength == SFP_WAVELENGTH_LL1550)
6782 flag |= SFP_FLAG_PT_LWLASER_LL1550 << SFP_FLAG_PT_SHIFT;
6783 }
6784 /* check if its SFP+ */
6785 flag |= ((page_a0[SSF_IDENTIFIER] == SFF_PG0_IDENT_SFP) ?
6786 SFP_FLAG_CT_SFP_PLUS : SFP_FLAG_CT_UNKNOWN)
6787 << SFP_FLAG_CT_SHIFT;
6788
6789 /* check if its OPTICAL */
6790 flag |= ((page_a0[SSF_CONNECTOR] == SFF_PG0_CONNECTOR_LC) ?
6791 SFP_FLAG_IS_OPTICAL_PORT : 0)
6792 << SFP_FLAG_IS_OPTICAL_SHIFT;
6793
6794 temperature = (page_a2[SFF_TEMPERATURE_B1] << 8 |
6795 page_a2[SFF_TEMPERATURE_B0]);
6796 vcc = (page_a2[SFF_VCC_B1] << 8 |
6797 page_a2[SFF_VCC_B0]);
6798 tx_power = (page_a2[SFF_TXPOWER_B1] << 8 |
6799 page_a2[SFF_TXPOWER_B0]);
6800 tx_bias = (page_a2[SFF_TX_BIAS_CURRENT_B1] << 8 |
6801 page_a2[SFF_TX_BIAS_CURRENT_B0]);
6802 rx_power = (page_a2[SFF_RXPOWER_B1] << 8 |
6803 page_a2[SFF_RXPOWER_B0]);
6804 desc->sfp_info.temperature = cpu_to_be16(temperature);
6805 desc->sfp_info.rx_power = cpu_to_be16(rx_power);
6806 desc->sfp_info.tx_bias = cpu_to_be16(tx_bias);
6807 desc->sfp_info.tx_power = cpu_to_be16(tx_power);
6808 desc->sfp_info.vcc = cpu_to_be16(vcc);
6809
6810 desc->sfp_info.flags = cpu_to_be16(flag);
6811 desc->length = cpu_to_be32(sizeof(desc->sfp_info));
6812
6813 return sizeof(struct fc_rdp_sfp_desc);
6814}
6815
6816static uint32_t
6817lpfc_rdp_res_link_error(struct fc_rdp_link_error_status_desc *desc,
6818 READ_LNK_VAR *stat)
6819{
6820 uint32_t type;
6821
6822 desc->tag = cpu_to_be32(RDP_LINK_ERROR_STATUS_DESC_TAG);
6823
6824 type = VN_PT_PHY_PF_PORT << VN_PT_PHY_SHIFT;
6825
6826 desc->info.port_type = cpu_to_be32(type);
6827
6828 desc->info.link_status.link_failure_cnt =
6829 cpu_to_be32(stat->linkFailureCnt);
6830 desc->info.link_status.loss_of_synch_cnt =
6831 cpu_to_be32(stat->lossSyncCnt);
6832 desc->info.link_status.loss_of_signal_cnt =
6833 cpu_to_be32(stat->lossSignalCnt);
6834 desc->info.link_status.primitive_seq_proto_err =
6835 cpu_to_be32(stat->primSeqErrCnt);
6836 desc->info.link_status.invalid_trans_word =
6837 cpu_to_be32(stat->invalidXmitWord);
6838 desc->info.link_status.invalid_crc_cnt = cpu_to_be32(stat->crcCnt);
6839
6840 desc->length = cpu_to_be32(sizeof(desc->info));
6841
6842 return sizeof(struct fc_rdp_link_error_status_desc);
6843}
6844
6845static uint32_t
6846lpfc_rdp_res_bbc_desc(struct fc_rdp_bbc_desc *desc, READ_LNK_VAR *stat,
6847 struct lpfc_vport *vport)
6848{
6849 uint32_t bbCredit;
6850
6851 desc->tag = cpu_to_be32(RDP_BBC_DESC_TAG);
6852
6853 bbCredit = vport->fc_sparam.cmn.bbCreditLsb |
6854 (vport->fc_sparam.cmn.bbCreditMsb << 8);
6855 desc->bbc_info.port_bbc = cpu_to_be32(bbCredit);
6856 if (vport->phba->fc_topology != LPFC_TOPOLOGY_LOOP) {
6857 bbCredit = vport->phba->fc_fabparam.cmn.bbCreditLsb |
6858 (vport->phba->fc_fabparam.cmn.bbCreditMsb << 8);
6859 desc->bbc_info.attached_port_bbc = cpu_to_be32(bbCredit);
6860 } else {
6861 desc->bbc_info.attached_port_bbc = 0;
6862 }
6863
6864 desc->bbc_info.rtt = 0;
6865 desc->length = cpu_to_be32(sizeof(desc->bbc_info));
6866
6867 return sizeof(struct fc_rdp_bbc_desc);
6868}
6869
6870static uint32_t
6871lpfc_rdp_res_oed_temp_desc(struct lpfc_hba *phba,
6872 struct fc_rdp_oed_sfp_desc *desc, uint8_t *page_a2)
6873{
6874 uint32_t flags = 0;
6875
6876 desc->tag = cpu_to_be32(RDP_OED_DESC_TAG);
6877
6878 desc->oed_info.hi_alarm = page_a2[SSF_TEMP_HIGH_ALARM];
6879 desc->oed_info.lo_alarm = page_a2[SSF_TEMP_LOW_ALARM];
6880 desc->oed_info.hi_warning = page_a2[SSF_TEMP_HIGH_WARNING];
6881 desc->oed_info.lo_warning = page_a2[SSF_TEMP_LOW_WARNING];
6882
6883 if (phba->sfp_alarm & LPFC_TRANSGRESSION_HIGH_TEMPERATURE)
6884 flags |= RDP_OET_HIGH_ALARM;
6885 if (phba->sfp_alarm & LPFC_TRANSGRESSION_LOW_TEMPERATURE)
6886 flags |= RDP_OET_LOW_ALARM;
6887 if (phba->sfp_warning & LPFC_TRANSGRESSION_HIGH_TEMPERATURE)
6888 flags |= RDP_OET_HIGH_WARNING;
6889 if (phba->sfp_warning & LPFC_TRANSGRESSION_LOW_TEMPERATURE)
6890 flags |= RDP_OET_LOW_WARNING;
6891
6892 flags |= ((0xf & RDP_OED_TEMPERATURE) << RDP_OED_TYPE_SHIFT);
6893 desc->oed_info.function_flags = cpu_to_be32(flags);
6894 desc->length = cpu_to_be32(sizeof(desc->oed_info));
6895 return sizeof(struct fc_rdp_oed_sfp_desc);
6896}
6897
6898static uint32_t
6899lpfc_rdp_res_oed_voltage_desc(struct lpfc_hba *phba,
6900 struct fc_rdp_oed_sfp_desc *desc,
6901 uint8_t *page_a2)
6902{
6903 uint32_t flags = 0;
6904
6905 desc->tag = cpu_to_be32(RDP_OED_DESC_TAG);
6906
6907 desc->oed_info.hi_alarm = page_a2[SSF_VOLTAGE_HIGH_ALARM];
6908 desc->oed_info.lo_alarm = page_a2[SSF_VOLTAGE_LOW_ALARM];
6909 desc->oed_info.hi_warning = page_a2[SSF_VOLTAGE_HIGH_WARNING];
6910 desc->oed_info.lo_warning = page_a2[SSF_VOLTAGE_LOW_WARNING];
6911
6912 if (phba->sfp_alarm & LPFC_TRANSGRESSION_HIGH_VOLTAGE)
6913 flags |= RDP_OET_HIGH_ALARM;
6914 if (phba->sfp_alarm & LPFC_TRANSGRESSION_LOW_VOLTAGE)
6915 flags |= RDP_OET_LOW_ALARM;
6916 if (phba->sfp_warning & LPFC_TRANSGRESSION_HIGH_VOLTAGE)
6917 flags |= RDP_OET_HIGH_WARNING;
6918 if (phba->sfp_warning & LPFC_TRANSGRESSION_LOW_VOLTAGE)
6919 flags |= RDP_OET_LOW_WARNING;
6920
6921 flags |= ((0xf & RDP_OED_VOLTAGE) << RDP_OED_TYPE_SHIFT);
6922 desc->oed_info.function_flags = cpu_to_be32(flags);
6923 desc->length = cpu_to_be32(sizeof(desc->oed_info));
6924 return sizeof(struct fc_rdp_oed_sfp_desc);
6925}
6926
6927static uint32_t
6928lpfc_rdp_res_oed_txbias_desc(struct lpfc_hba *phba,
6929 struct fc_rdp_oed_sfp_desc *desc,
6930 uint8_t *page_a2)
6931{
6932 uint32_t flags = 0;
6933
6934 desc->tag = cpu_to_be32(RDP_OED_DESC_TAG);
6935
6936 desc->oed_info.hi_alarm = page_a2[SSF_BIAS_HIGH_ALARM];
6937 desc->oed_info.lo_alarm = page_a2[SSF_BIAS_LOW_ALARM];
6938 desc->oed_info.hi_warning = page_a2[SSF_BIAS_HIGH_WARNING];
6939 desc->oed_info.lo_warning = page_a2[SSF_BIAS_LOW_WARNING];
6940
6941 if (phba->sfp_alarm & LPFC_TRANSGRESSION_HIGH_TXBIAS)
6942 flags |= RDP_OET_HIGH_ALARM;
6943 if (phba->sfp_alarm & LPFC_TRANSGRESSION_LOW_TXBIAS)
6944 flags |= RDP_OET_LOW_ALARM;
6945 if (phba->sfp_warning & LPFC_TRANSGRESSION_HIGH_TXBIAS)
6946 flags |= RDP_OET_HIGH_WARNING;
6947 if (phba->sfp_warning & LPFC_TRANSGRESSION_LOW_TXBIAS)
6948 flags |= RDP_OET_LOW_WARNING;
6949
6950 flags |= ((0xf & RDP_OED_TXBIAS) << RDP_OED_TYPE_SHIFT);
6951 desc->oed_info.function_flags = cpu_to_be32(flags);
6952 desc->length = cpu_to_be32(sizeof(desc->oed_info));
6953 return sizeof(struct fc_rdp_oed_sfp_desc);
6954}
6955
6956static uint32_t
6957lpfc_rdp_res_oed_txpower_desc(struct lpfc_hba *phba,
6958 struct fc_rdp_oed_sfp_desc *desc,
6959 uint8_t *page_a2)
6960{
6961 uint32_t flags = 0;
6962
6963 desc->tag = cpu_to_be32(RDP_OED_DESC_TAG);
6964
6965 desc->oed_info.hi_alarm = page_a2[SSF_TXPOWER_HIGH_ALARM];
6966 desc->oed_info.lo_alarm = page_a2[SSF_TXPOWER_LOW_ALARM];
6967 desc->oed_info.hi_warning = page_a2[SSF_TXPOWER_HIGH_WARNING];
6968 desc->oed_info.lo_warning = page_a2[SSF_TXPOWER_LOW_WARNING];
6969
6970 if (phba->sfp_alarm & LPFC_TRANSGRESSION_HIGH_TXPOWER)
6971 flags |= RDP_OET_HIGH_ALARM;
6972 if (phba->sfp_alarm & LPFC_TRANSGRESSION_LOW_TXPOWER)
6973 flags |= RDP_OET_LOW_ALARM;
6974 if (phba->sfp_warning & LPFC_TRANSGRESSION_HIGH_TXPOWER)
6975 flags |= RDP_OET_HIGH_WARNING;
6976 if (phba->sfp_warning & LPFC_TRANSGRESSION_LOW_TXPOWER)
6977 flags |= RDP_OET_LOW_WARNING;
6978
6979 flags |= ((0xf & RDP_OED_TXPOWER) << RDP_OED_TYPE_SHIFT);
6980 desc->oed_info.function_flags = cpu_to_be32(flags);
6981 desc->length = cpu_to_be32(sizeof(desc->oed_info));
6982 return sizeof(struct fc_rdp_oed_sfp_desc);
6983}
6984
6985
6986static uint32_t
6987lpfc_rdp_res_oed_rxpower_desc(struct lpfc_hba *phba,
6988 struct fc_rdp_oed_sfp_desc *desc,
6989 uint8_t *page_a2)
6990{
6991 uint32_t flags = 0;
6992
6993 desc->tag = cpu_to_be32(RDP_OED_DESC_TAG);
6994
6995 desc->oed_info.hi_alarm = page_a2[SSF_RXPOWER_HIGH_ALARM];
6996 desc->oed_info.lo_alarm = page_a2[SSF_RXPOWER_LOW_ALARM];
6997 desc->oed_info.hi_warning = page_a2[SSF_RXPOWER_HIGH_WARNING];
6998 desc->oed_info.lo_warning = page_a2[SSF_RXPOWER_LOW_WARNING];
6999
7000 if (phba->sfp_alarm & LPFC_TRANSGRESSION_HIGH_RXPOWER)
7001 flags |= RDP_OET_HIGH_ALARM;
7002 if (phba->sfp_alarm & LPFC_TRANSGRESSION_LOW_RXPOWER)
7003 flags |= RDP_OET_LOW_ALARM;
7004 if (phba->sfp_warning & LPFC_TRANSGRESSION_HIGH_RXPOWER)
7005 flags |= RDP_OET_HIGH_WARNING;
7006 if (phba->sfp_warning & LPFC_TRANSGRESSION_LOW_RXPOWER)
7007 flags |= RDP_OET_LOW_WARNING;
7008
7009 flags |= ((0xf & RDP_OED_RXPOWER) << RDP_OED_TYPE_SHIFT);
7010 desc->oed_info.function_flags = cpu_to_be32(flags);
7011 desc->length = cpu_to_be32(sizeof(desc->oed_info));
7012 return sizeof(struct fc_rdp_oed_sfp_desc);
7013}
7014
7015static uint32_t
7016lpfc_rdp_res_opd_desc(struct fc_rdp_opd_sfp_desc *desc,
7017 uint8_t *page_a0, struct lpfc_vport *vport)
7018{
7019 desc->tag = cpu_to_be32(RDP_OPD_DESC_TAG);
7020 memcpy(desc->opd_info.vendor_name, &page_a0[SSF_VENDOR_NAME], 16);
7021 memcpy(desc->opd_info.model_number, &page_a0[SSF_VENDOR_PN], 16);
7022 memcpy(desc->opd_info.serial_number, &page_a0[SSF_VENDOR_SN], 16);
7023 memcpy(desc->opd_info.revision, &page_a0[SSF_VENDOR_REV], 4);
7024 memcpy(desc->opd_info.date, &page_a0[SSF_DATE_CODE], 8);
7025 desc->length = cpu_to_be32(sizeof(desc->opd_info));
7026 return sizeof(struct fc_rdp_opd_sfp_desc);
7027}
7028
7029static uint32_t
7030lpfc_rdp_res_fec_desc(struct fc_fec_rdp_desc *desc, READ_LNK_VAR *stat)
7031{
7032 if (bf_get(lpfc_read_link_stat_gec2, stat) == 0)
7033 return 0;
7034 desc->tag = cpu_to_be32(RDP_FEC_DESC_TAG);
7035
7036 desc->info.CorrectedBlocks =
7037 cpu_to_be32(stat->fecCorrBlkCount);
7038 desc->info.UncorrectableBlocks =
7039 cpu_to_be32(stat->fecUncorrBlkCount);
7040
7041 desc->length = cpu_to_be32(sizeof(desc->info));
7042
7043 return sizeof(struct fc_fec_rdp_desc);
7044}
7045
7046static uint32_t
7047lpfc_rdp_res_speed(struct fc_rdp_port_speed_desc *desc, struct lpfc_hba *phba)
7048{
7049 uint16_t rdp_cap = 0;
7050 uint16_t rdp_speed;
7051
7052 desc->tag = cpu_to_be32(RDP_PORT_SPEED_DESC_TAG);
7053
7054 switch (phba->fc_linkspeed) {
7055 case LPFC_LINK_SPEED_1GHZ:
7056 rdp_speed = RDP_PS_1GB;
7057 break;
7058 case LPFC_LINK_SPEED_2GHZ:
7059 rdp_speed = RDP_PS_2GB;
7060 break;
7061 case LPFC_LINK_SPEED_4GHZ:
7062 rdp_speed = RDP_PS_4GB;
7063 break;
7064 case LPFC_LINK_SPEED_8GHZ:
7065 rdp_speed = RDP_PS_8GB;
7066 break;
7067 case LPFC_LINK_SPEED_10GHZ:
7068 rdp_speed = RDP_PS_10GB;
7069 break;
7070 case LPFC_LINK_SPEED_16GHZ:
7071 rdp_speed = RDP_PS_16GB;
7072 break;
7073 case LPFC_LINK_SPEED_32GHZ:
7074 rdp_speed = RDP_PS_32GB;
7075 break;
7076 case LPFC_LINK_SPEED_64GHZ:
7077 rdp_speed = RDP_PS_64GB;
7078 break;
7079 case LPFC_LINK_SPEED_128GHZ:
7080 rdp_speed = RDP_PS_128GB;
7081 break;
7082 case LPFC_LINK_SPEED_256GHZ:
7083 rdp_speed = RDP_PS_256GB;
7084 break;
7085 default:
7086 rdp_speed = RDP_PS_UNKNOWN;
7087 break;
7088 }
7089
7090 desc->info.port_speed.speed = cpu_to_be16(rdp_speed);
7091
7092 if (phba->lmt & LMT_256Gb)
7093 rdp_cap |= RDP_PS_256GB;
7094 if (phba->lmt & LMT_128Gb)
7095 rdp_cap |= RDP_PS_128GB;
7096 if (phba->lmt & LMT_64Gb)
7097 rdp_cap |= RDP_PS_64GB;
7098 if (phba->lmt & LMT_32Gb)
7099 rdp_cap |= RDP_PS_32GB;
7100 if (phba->lmt & LMT_16Gb)
7101 rdp_cap |= RDP_PS_16GB;
7102 if (phba->lmt & LMT_10Gb)
7103 rdp_cap |= RDP_PS_10GB;
7104 if (phba->lmt & LMT_8Gb)
7105 rdp_cap |= RDP_PS_8GB;
7106 if (phba->lmt & LMT_4Gb)
7107 rdp_cap |= RDP_PS_4GB;
7108 if (phba->lmt & LMT_2Gb)
7109 rdp_cap |= RDP_PS_2GB;
7110 if (phba->lmt & LMT_1Gb)
7111 rdp_cap |= RDP_PS_1GB;
7112
7113 if (rdp_cap == 0)
7114 rdp_cap = RDP_CAP_UNKNOWN;
7115 if (phba->cfg_link_speed != LPFC_USER_LINK_SPEED_AUTO)
7116 rdp_cap |= RDP_CAP_USER_CONFIGURED;
7117
7118 desc->info.port_speed.capabilities = cpu_to_be16(rdp_cap);
7119 desc->length = cpu_to_be32(sizeof(desc->info));
7120 return sizeof(struct fc_rdp_port_speed_desc);
7121}
7122
7123static uint32_t
7124lpfc_rdp_res_diag_port_names(struct fc_rdp_port_name_desc *desc,
7125 struct lpfc_vport *vport)
7126{
7127
7128 desc->tag = cpu_to_be32(RDP_PORT_NAMES_DESC_TAG);
7129
7130 memcpy(desc->port_names.wwnn, &vport->fc_nodename,
7131 sizeof(desc->port_names.wwnn));
7132
7133 memcpy(desc->port_names.wwpn, &vport->fc_portname,
7134 sizeof(desc->port_names.wwpn));
7135
7136 desc->length = cpu_to_be32(sizeof(desc->port_names));
7137 return sizeof(struct fc_rdp_port_name_desc);
7138}
7139
7140static uint32_t
7141lpfc_rdp_res_attach_port_names(struct fc_rdp_port_name_desc *desc,
7142 struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
7143{
7144
7145 desc->tag = cpu_to_be32(RDP_PORT_NAMES_DESC_TAG);
7146 if (test_bit(FC_FABRIC, &vport->fc_flag)) {
7147 memcpy(desc->port_names.wwnn, &vport->fabric_nodename,
7148 sizeof(desc->port_names.wwnn));
7149
7150 memcpy(desc->port_names.wwpn, &vport->fabric_portname,
7151 sizeof(desc->port_names.wwpn));
7152 } else { /* Point to Point */
7153 memcpy(desc->port_names.wwnn, &ndlp->nlp_nodename,
7154 sizeof(desc->port_names.wwnn));
7155
7156 memcpy(desc->port_names.wwpn, &ndlp->nlp_portname,
7157 sizeof(desc->port_names.wwpn));
7158 }
7159
7160 desc->length = cpu_to_be32(sizeof(desc->port_names));
7161 return sizeof(struct fc_rdp_port_name_desc);
7162}
7163
7164static void
7165lpfc_els_rdp_cmpl(struct lpfc_hba *phba, struct lpfc_rdp_context *rdp_context,
7166 int status)
7167{
7168 struct lpfc_nodelist *ndlp = rdp_context->ndlp;
7169 struct lpfc_vport *vport = ndlp->vport;
7170 struct lpfc_iocbq *elsiocb;
7171 struct ulp_bde64 *bpl;
7172 IOCB_t *icmd;
7173 union lpfc_wqe128 *wqe;
7174 uint8_t *pcmd;
7175 struct ls_rjt *stat;
7176 struct fc_rdp_res_frame *rdp_res;
7177 uint32_t cmdsize, len;
7178 uint16_t *flag_ptr;
7179 int rc;
7180 u32 ulp_context;
7181
7182 if (status != SUCCESS)
7183 goto error;
7184
7185 /* This will change once we know the true size of the RDP payload */
7186 cmdsize = sizeof(struct fc_rdp_res_frame);
7187
7188 elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize,
7189 lpfc_max_els_tries, rdp_context->ndlp,
7190 rdp_context->ndlp->nlp_DID, ELS_CMD_ACC);
7191 if (!elsiocb)
7192 goto free_rdp_context;
7193
7194 ulp_context = get_job_ulpcontext(phba, elsiocb);
7195 if (phba->sli_rev == LPFC_SLI_REV4) {
7196 wqe = &elsiocb->wqe;
7197 /* ox-id of the frame */
7198 bf_set(wqe_rcvoxid, &wqe->xmit_els_rsp.wqe_com,
7199 rdp_context->ox_id);
7200 bf_set(wqe_ctxt_tag, &wqe->xmit_els_rsp.wqe_com,
7201 rdp_context->rx_id);
7202 } else {
7203 icmd = &elsiocb->iocb;
7204 icmd->ulpContext = rdp_context->rx_id;
7205 icmd->unsli3.rcvsli3.ox_id = rdp_context->ox_id;
7206 }
7207
7208 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
7209 "2171 Xmit RDP response tag x%x xri x%x, "
7210 "did x%x, nlp_flag x%lx, nlp_state x%x, rpi x%x",
7211 elsiocb->iotag, ulp_context,
7212 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
7213 ndlp->nlp_rpi);
7214 rdp_res = (struct fc_rdp_res_frame *)elsiocb->cmd_dmabuf->virt;
7215 pcmd = (uint8_t *)elsiocb->cmd_dmabuf->virt;
7216 memset(pcmd, 0, sizeof(struct fc_rdp_res_frame));
7217 *((uint32_t *) (pcmd)) = ELS_CMD_ACC;
7218
7219 /* Update Alarm and Warning */
7220 flag_ptr = (uint16_t *)(rdp_context->page_a2 + SSF_ALARM_FLAGS);
7221 phba->sfp_alarm |= *flag_ptr;
7222 flag_ptr = (uint16_t *)(rdp_context->page_a2 + SSF_WARNING_FLAGS);
7223 phba->sfp_warning |= *flag_ptr;
7224
7225 /* For RDP payload */
7226 len = 8;
7227 len += lpfc_rdp_res_link_service((struct fc_rdp_link_service_desc *)
7228 (len + pcmd), ELS_CMD_RDP);
7229
7230 len += lpfc_rdp_res_sfp_desc((struct fc_rdp_sfp_desc *)(len + pcmd),
7231 rdp_context->page_a0, rdp_context->page_a2);
7232 len += lpfc_rdp_res_speed((struct fc_rdp_port_speed_desc *)(len + pcmd),
7233 phba);
7234 len += lpfc_rdp_res_link_error((struct fc_rdp_link_error_status_desc *)
7235 (len + pcmd), &rdp_context->link_stat);
7236 len += lpfc_rdp_res_diag_port_names((struct fc_rdp_port_name_desc *)
7237 (len + pcmd), vport);
7238 len += lpfc_rdp_res_attach_port_names((struct fc_rdp_port_name_desc *)
7239 (len + pcmd), vport, ndlp);
7240 len += lpfc_rdp_res_fec_desc((struct fc_fec_rdp_desc *)(len + pcmd),
7241 &rdp_context->link_stat);
7242 len += lpfc_rdp_res_bbc_desc((struct fc_rdp_bbc_desc *)(len + pcmd),
7243 &rdp_context->link_stat, vport);
7244 len += lpfc_rdp_res_oed_temp_desc(phba,
7245 (struct fc_rdp_oed_sfp_desc *)(len + pcmd),
7246 rdp_context->page_a2);
7247 len += lpfc_rdp_res_oed_voltage_desc(phba,
7248 (struct fc_rdp_oed_sfp_desc *)(len + pcmd),
7249 rdp_context->page_a2);
7250 len += lpfc_rdp_res_oed_txbias_desc(phba,
7251 (struct fc_rdp_oed_sfp_desc *)(len + pcmd),
7252 rdp_context->page_a2);
7253 len += lpfc_rdp_res_oed_txpower_desc(phba,
7254 (struct fc_rdp_oed_sfp_desc *)(len + pcmd),
7255 rdp_context->page_a2);
7256 len += lpfc_rdp_res_oed_rxpower_desc(phba,
7257 (struct fc_rdp_oed_sfp_desc *)(len + pcmd),
7258 rdp_context->page_a2);
7259 len += lpfc_rdp_res_opd_desc((struct fc_rdp_opd_sfp_desc *)(len + pcmd),
7260 rdp_context->page_a0, vport);
7261
7262 rdp_res->length = cpu_to_be32(len - 8);
7263 elsiocb->cmd_cmpl = lpfc_cmpl_els_rsp;
7264
7265 /* Now that we know the true size of the payload, update the BPL */
7266 bpl = (struct ulp_bde64 *)elsiocb->bpl_dmabuf->virt;
7267 bpl->tus.f.bdeSize = len;
7268 bpl->tus.f.bdeFlags = 0;
7269 bpl->tus.w = le32_to_cpu(bpl->tus.w);
7270
7271 phba->fc_stat.elsXmitACC++;
7272 elsiocb->ndlp = lpfc_nlp_get(ndlp);
7273 if (!elsiocb->ndlp) {
7274 lpfc_els_free_iocb(phba, elsiocb);
7275 goto free_rdp_context;
7276 }
7277
7278 rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
7279 if (rc == IOCB_ERROR) {
7280 lpfc_els_free_iocb(phba, elsiocb);
7281 lpfc_nlp_put(ndlp);
7282 }
7283
7284 goto free_rdp_context;
7285
7286error:
7287 cmdsize = 2 * sizeof(uint32_t);
7288 elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, lpfc_max_els_tries,
7289 ndlp, ndlp->nlp_DID, ELS_CMD_LS_RJT);
7290 if (!elsiocb)
7291 goto free_rdp_context;
7292
7293 if (phba->sli_rev == LPFC_SLI_REV4) {
7294 wqe = &elsiocb->wqe;
7295 /* ox-id of the frame */
7296 bf_set(wqe_rcvoxid, &wqe->xmit_els_rsp.wqe_com,
7297 rdp_context->ox_id);
7298 bf_set(wqe_ctxt_tag,
7299 &wqe->xmit_els_rsp.wqe_com,
7300 rdp_context->rx_id);
7301 } else {
7302 icmd = &elsiocb->iocb;
7303 icmd->ulpContext = rdp_context->rx_id;
7304 icmd->unsli3.rcvsli3.ox_id = rdp_context->ox_id;
7305 }
7306
7307 pcmd = (uint8_t *)elsiocb->cmd_dmabuf->virt;
7308
7309 *((uint32_t *) (pcmd)) = ELS_CMD_LS_RJT;
7310 stat = (struct ls_rjt *)(pcmd + sizeof(uint32_t));
7311 stat->un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
7312
7313 phba->fc_stat.elsXmitLSRJT++;
7314 elsiocb->cmd_cmpl = lpfc_cmpl_els_rsp;
7315 elsiocb->ndlp = lpfc_nlp_get(ndlp);
7316 if (!elsiocb->ndlp) {
7317 lpfc_els_free_iocb(phba, elsiocb);
7318 goto free_rdp_context;
7319 }
7320
7321 rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
7322 if (rc == IOCB_ERROR) {
7323 lpfc_els_free_iocb(phba, elsiocb);
7324 lpfc_nlp_put(ndlp);
7325 }
7326
7327free_rdp_context:
7328 /* This reference put is for the original unsolicited RDP. If the
7329 * prep failed, there is no reference to remove.
7330 */
7331 lpfc_nlp_put(ndlp);
7332 kfree(rdp_context);
7333}
7334
7335static int
7336lpfc_get_rdp_info(struct lpfc_hba *phba, struct lpfc_rdp_context *rdp_context)
7337{
7338 LPFC_MBOXQ_t *mbox = NULL;
7339 int rc;
7340
7341 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
7342 if (!mbox) {
7343 lpfc_printf_log(phba, KERN_WARNING, LOG_MBOX | LOG_ELS,
7344 "7105 failed to allocate mailbox memory");
7345 return 1;
7346 }
7347
7348 if (lpfc_sli4_dump_page_a0(phba, mbox))
7349 goto rdp_fail;
7350 mbox->vport = rdp_context->ndlp->vport;
7351 mbox->mbox_cmpl = lpfc_mbx_cmpl_rdp_page_a0;
7352 mbox->ctx_u.rdp = rdp_context;
7353 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
7354 if (rc == MBX_NOT_FINISHED) {
7355 lpfc_mbox_rsrc_cleanup(phba, mbox, MBOX_THD_UNLOCKED);
7356 return 1;
7357 }
7358
7359 return 0;
7360
7361rdp_fail:
7362 mempool_free(mbox, phba->mbox_mem_pool);
7363 return 1;
7364}
7365
7366int lpfc_get_sfp_info_wait(struct lpfc_hba *phba,
7367 struct lpfc_rdp_context *rdp_context)
7368{
7369 LPFC_MBOXQ_t *mbox = NULL;
7370 int rc;
7371 struct lpfc_dmabuf *mp;
7372 struct lpfc_dmabuf *mpsave;
7373 void *virt;
7374 MAILBOX_t *mb;
7375
7376 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
7377 if (!mbox) {
7378 lpfc_printf_log(phba, KERN_WARNING, LOG_MBOX | LOG_ELS,
7379 "7205 failed to allocate mailbox memory");
7380 return 1;
7381 }
7382
7383 if (lpfc_sli4_dump_page_a0(phba, mbox))
7384 goto sfp_fail;
7385 mp = mbox->ctx_buf;
7386 mpsave = mp;
7387 virt = mp->virt;
7388 if (phba->sli_rev < LPFC_SLI_REV4) {
7389 mb = &mbox->u.mb;
7390 mb->un.varDmp.cv = 1;
7391 mb->un.varDmp.co = 1;
7392 mb->un.varWords[2] = 0;
7393 mb->un.varWords[3] = DMP_SFF_PAGE_A0_SIZE / 4;
7394 mb->un.varWords[4] = 0;
7395 mb->un.varWords[5] = 0;
7396 mb->un.varWords[6] = 0;
7397 mb->un.varWords[7] = 0;
7398 mb->un.varWords[8] = 0;
7399 mb->un.varWords[9] = 0;
7400 mb->un.varWords[10] = 0;
7401 mbox->in_ext_byte_len = DMP_SFF_PAGE_A0_SIZE;
7402 mbox->out_ext_byte_len = DMP_SFF_PAGE_A0_SIZE;
7403 mbox->mbox_offset_word = 5;
7404 mbox->ext_buf = virt;
7405 } else {
7406 bf_set(lpfc_mbx_memory_dump_type3_length,
7407 &mbox->u.mqe.un.mem_dump_type3, DMP_SFF_PAGE_A0_SIZE);
7408 mbox->u.mqe.un.mem_dump_type3.addr_lo = putPaddrLow(mp->phys);
7409 mbox->u.mqe.un.mem_dump_type3.addr_hi = putPaddrHigh(mp->phys);
7410 }
7411 mbox->vport = phba->pport;
7412 rc = lpfc_sli_issue_mbox_wait(phba, mbox, LPFC_MBOX_SLI4_CONFIG_TMO);
7413 if (rc == MBX_NOT_FINISHED) {
7414 rc = 1;
7415 goto error;
7416 }
7417 if (rc == MBX_TIMEOUT)
7418 goto error;
7419 if (phba->sli_rev == LPFC_SLI_REV4)
7420 mp = mbox->ctx_buf;
7421 else
7422 mp = mpsave;
7423
7424 if (bf_get(lpfc_mqe_status, &mbox->u.mqe)) {
7425 rc = 1;
7426 goto error;
7427 }
7428
7429 lpfc_sli_bemem_bcopy(mp->virt, &rdp_context->page_a0,
7430 DMP_SFF_PAGE_A0_SIZE);
7431
7432 memset(mbox, 0, sizeof(*mbox));
7433 memset(mp->virt, 0, DMP_SFF_PAGE_A2_SIZE);
7434 INIT_LIST_HEAD(&mp->list);
7435
7436 /* save address for completion */
7437 mbox->ctx_buf = mp;
7438 mbox->vport = phba->pport;
7439
7440 bf_set(lpfc_mqe_command, &mbox->u.mqe, MBX_DUMP_MEMORY);
7441 bf_set(lpfc_mbx_memory_dump_type3_type,
7442 &mbox->u.mqe.un.mem_dump_type3, DMP_LMSD);
7443 bf_set(lpfc_mbx_memory_dump_type3_link,
7444 &mbox->u.mqe.un.mem_dump_type3, phba->sli4_hba.physical_port);
7445 bf_set(lpfc_mbx_memory_dump_type3_page_no,
7446 &mbox->u.mqe.un.mem_dump_type3, DMP_PAGE_A2);
7447 if (phba->sli_rev < LPFC_SLI_REV4) {
7448 mb = &mbox->u.mb;
7449 mb->un.varDmp.cv = 1;
7450 mb->un.varDmp.co = 1;
7451 mb->un.varWords[2] = 0;
7452 mb->un.varWords[3] = DMP_SFF_PAGE_A2_SIZE / 4;
7453 mb->un.varWords[4] = 0;
7454 mb->un.varWords[5] = 0;
7455 mb->un.varWords[6] = 0;
7456 mb->un.varWords[7] = 0;
7457 mb->un.varWords[8] = 0;
7458 mb->un.varWords[9] = 0;
7459 mb->un.varWords[10] = 0;
7460 mbox->in_ext_byte_len = DMP_SFF_PAGE_A2_SIZE;
7461 mbox->out_ext_byte_len = DMP_SFF_PAGE_A2_SIZE;
7462 mbox->mbox_offset_word = 5;
7463 mbox->ext_buf = virt;
7464 } else {
7465 bf_set(lpfc_mbx_memory_dump_type3_length,
7466 &mbox->u.mqe.un.mem_dump_type3, DMP_SFF_PAGE_A2_SIZE);
7467 mbox->u.mqe.un.mem_dump_type3.addr_lo = putPaddrLow(mp->phys);
7468 mbox->u.mqe.un.mem_dump_type3.addr_hi = putPaddrHigh(mp->phys);
7469 }
7470
7471 rc = lpfc_sli_issue_mbox_wait(phba, mbox, LPFC_MBOX_SLI4_CONFIG_TMO);
7472
7473 if (rc == MBX_TIMEOUT)
7474 goto error;
7475 if (bf_get(lpfc_mqe_status, &mbox->u.mqe)) {
7476 rc = 1;
7477 goto error;
7478 }
7479 rc = 0;
7480
7481 lpfc_sli_bemem_bcopy(mp->virt, &rdp_context->page_a2,
7482 DMP_SFF_PAGE_A2_SIZE);
7483
7484error:
7485 if (mbox->mbox_flag & LPFC_MBX_WAKE) {
7486 mbox->ctx_buf = mpsave;
7487 lpfc_mbox_rsrc_cleanup(phba, mbox, MBOX_THD_UNLOCKED);
7488 }
7489
7490 return rc;
7491
7492sfp_fail:
7493 mempool_free(mbox, phba->mbox_mem_pool);
7494 return 1;
7495}
7496
7497/*
7498 * lpfc_els_rcv_rdp - Process an unsolicited RDP ELS.
7499 * @vport: pointer to a host virtual N_Port data structure.
7500 * @cmdiocb: pointer to lpfc command iocb data structure.
7501 * @ndlp: pointer to a node-list data structure.
7502 *
7503 * This routine processes an unsolicited RDP(Read Diagnostic Parameters)
7504 * IOCB. First, the payload of the unsolicited RDP is checked.
7505 * Then it will (1) send MBX_DUMP_MEMORY, Embedded DMP_LMSD sub command TYPE-3
7506 * for Page A0, (2) send MBX_DUMP_MEMORY, DMP_LMSD for Page A2,
7507 * (3) send MBX_READ_LNK_STAT to get link stat, (4) Call lpfc_els_rdp_cmpl
7508 * gather all data and send RDP response.
7509 *
7510 * Return code
7511 * 0 - Sent the acc response
7512 * 1 - Sent the reject response.
7513 */
7514static int
7515lpfc_els_rcv_rdp(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
7516 struct lpfc_nodelist *ndlp)
7517{
7518 struct lpfc_hba *phba = vport->phba;
7519 struct lpfc_dmabuf *pcmd;
7520 uint8_t rjt_err, rjt_expl = LSEXP_NOTHING_MORE;
7521 struct fc_rdp_req_frame *rdp_req;
7522 struct lpfc_rdp_context *rdp_context;
7523 union lpfc_wqe128 *cmd = NULL;
7524 struct ls_rjt stat;
7525
7526 if (phba->sli_rev < LPFC_SLI_REV4 ||
7527 bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) <
7528 LPFC_SLI_INTF_IF_TYPE_2) {
7529 rjt_err = LSRJT_UNABLE_TPC;
7530 rjt_expl = LSEXP_REQ_UNSUPPORTED;
7531 goto error;
7532 }
7533
7534 if (phba->sli_rev < LPFC_SLI_REV4 ||
7535 test_bit(HBA_FCOE_MODE, &phba->hba_flag)) {
7536 rjt_err = LSRJT_UNABLE_TPC;
7537 rjt_expl = LSEXP_REQ_UNSUPPORTED;
7538 goto error;
7539 }
7540
7541 pcmd = cmdiocb->cmd_dmabuf;
7542 rdp_req = (struct fc_rdp_req_frame *) pcmd->virt;
7543
7544 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
7545 "2422 ELS RDP Request "
7546 "dec len %d tag x%x port_id %d len %d\n",
7547 be32_to_cpu(rdp_req->rdp_des_length),
7548 be32_to_cpu(rdp_req->nport_id_desc.tag),
7549 be32_to_cpu(rdp_req->nport_id_desc.nport_id),
7550 be32_to_cpu(rdp_req->nport_id_desc.length));
7551
7552 if (sizeof(struct fc_rdp_nport_desc) !=
7553 be32_to_cpu(rdp_req->rdp_des_length))
7554 goto rjt_logerr;
7555 if (RDP_N_PORT_DESC_TAG != be32_to_cpu(rdp_req->nport_id_desc.tag))
7556 goto rjt_logerr;
7557 if (RDP_NPORT_ID_SIZE !=
7558 be32_to_cpu(rdp_req->nport_id_desc.length))
7559 goto rjt_logerr;
7560 rdp_context = kzalloc_obj(struct lpfc_rdp_context);
7561 if (!rdp_context) {
7562 rjt_err = LSRJT_UNABLE_TPC;
7563 goto error;
7564 }
7565
7566 cmd = &cmdiocb->wqe;
7567 rdp_context->ndlp = lpfc_nlp_get(ndlp);
7568 if (!rdp_context->ndlp) {
7569 kfree(rdp_context);
7570 rjt_err = LSRJT_UNABLE_TPC;
7571 goto error;
7572 }
7573 rdp_context->ox_id = bf_get(wqe_rcvoxid,
7574 &cmd->xmit_els_rsp.wqe_com);
7575 rdp_context->rx_id = bf_get(wqe_ctxt_tag,
7576 &cmd->xmit_els_rsp.wqe_com);
7577 rdp_context->cmpl = lpfc_els_rdp_cmpl;
7578 if (lpfc_get_rdp_info(phba, rdp_context)) {
7579 lpfc_printf_vlog(ndlp->vport, KERN_WARNING, LOG_ELS,
7580 "2423 Unable to send mailbox");
7581 kfree(rdp_context);
7582 rjt_err = LSRJT_UNABLE_TPC;
7583 lpfc_nlp_put(ndlp);
7584 goto error;
7585 }
7586
7587 return 0;
7588
7589rjt_logerr:
7590 rjt_err = LSRJT_LOGICAL_ERR;
7591
7592error:
7593 memset(&stat, 0, sizeof(stat));
7594 stat.un.b.lsRjtRsnCode = rjt_err;
7595 stat.un.b.lsRjtRsnCodeExp = rjt_expl;
7596 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
7597 return 1;
7598}
7599
7600
7601static void
7602lpfc_els_lcb_rsp(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
7603{
7604 MAILBOX_t *mb;
7605 IOCB_t *icmd;
7606 union lpfc_wqe128 *wqe;
7607 uint8_t *pcmd;
7608 struct lpfc_iocbq *elsiocb;
7609 struct lpfc_nodelist *ndlp;
7610 struct ls_rjt *stat;
7611 union lpfc_sli4_cfg_shdr *shdr;
7612 struct lpfc_lcb_context *lcb_context;
7613 struct fc_lcb_res_frame *lcb_res;
7614 uint32_t cmdsize, shdr_status, shdr_add_status;
7615 int rc;
7616
7617 mb = &pmb->u.mb;
7618 lcb_context = pmb->ctx_u.lcb;
7619 ndlp = lcb_context->ndlp;
7620 memset(&pmb->ctx_u, 0, sizeof(pmb->ctx_u));
7621 pmb->ctx_buf = NULL;
7622
7623 shdr = (union lpfc_sli4_cfg_shdr *)
7624 &pmb->u.mqe.un.beacon_config.header.cfg_shdr;
7625 shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
7626 shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response);
7627
7628 lpfc_printf_log(phba, KERN_INFO, LOG_MBOX,
7629 "0194 SET_BEACON_CONFIG mailbox "
7630 "completed with status x%x add_status x%x,"
7631 " mbx status x%x\n",
7632 shdr_status, shdr_add_status, mb->mbxStatus);
7633
7634 if ((mb->mbxStatus != MBX_SUCCESS) || shdr_status ||
7635 (shdr_add_status == ADD_STATUS_OPERATION_ALREADY_ACTIVE) ||
7636 (shdr_add_status == ADD_STATUS_INVALID_REQUEST)) {
7637 mempool_free(pmb, phba->mbox_mem_pool);
7638 goto error;
7639 }
7640
7641 mempool_free(pmb, phba->mbox_mem_pool);
7642 cmdsize = sizeof(struct fc_lcb_res_frame);
7643 elsiocb = lpfc_prep_els_iocb(phba->pport, 0, cmdsize,
7644 lpfc_max_els_tries, ndlp,
7645 ndlp->nlp_DID, ELS_CMD_ACC);
7646
7647 /* Decrement the ndlp reference count from previous mbox command */
7648 lpfc_nlp_put(ndlp);
7649
7650 if (!elsiocb)
7651 goto free_lcb_context;
7652
7653 lcb_res = (struct fc_lcb_res_frame *)elsiocb->cmd_dmabuf->virt;
7654
7655 memset(lcb_res, 0, sizeof(struct fc_lcb_res_frame));
7656
7657 if (phba->sli_rev == LPFC_SLI_REV4) {
7658 wqe = &elsiocb->wqe;
7659 bf_set(wqe_ctxt_tag, &wqe->generic.wqe_com, lcb_context->rx_id);
7660 bf_set(wqe_rcvoxid, &wqe->xmit_els_rsp.wqe_com,
7661 lcb_context->ox_id);
7662 } else {
7663 icmd = &elsiocb->iocb;
7664 icmd->ulpContext = lcb_context->rx_id;
7665 icmd->unsli3.rcvsli3.ox_id = lcb_context->ox_id;
7666 }
7667
7668 pcmd = (uint8_t *)elsiocb->cmd_dmabuf->virt;
7669 *((uint32_t *)(pcmd)) = ELS_CMD_ACC;
7670 lcb_res->lcb_sub_command = lcb_context->sub_command;
7671 lcb_res->lcb_type = lcb_context->type;
7672 lcb_res->capability = lcb_context->capability;
7673 lcb_res->lcb_frequency = lcb_context->frequency;
7674 lcb_res->lcb_duration = lcb_context->duration;
7675 elsiocb->cmd_cmpl = lpfc_cmpl_els_rsp;
7676 phba->fc_stat.elsXmitACC++;
7677
7678 elsiocb->ndlp = lpfc_nlp_get(ndlp);
7679 if (!elsiocb->ndlp) {
7680 lpfc_els_free_iocb(phba, elsiocb);
7681 goto out;
7682 }
7683
7684 rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
7685 if (rc == IOCB_ERROR) {
7686 lpfc_els_free_iocb(phba, elsiocb);
7687 lpfc_nlp_put(ndlp);
7688 }
7689 out:
7690 kfree(lcb_context);
7691 return;
7692
7693error:
7694 cmdsize = sizeof(struct fc_lcb_res_frame);
7695 elsiocb = lpfc_prep_els_iocb(phba->pport, 0, cmdsize,
7696 lpfc_max_els_tries, ndlp,
7697 ndlp->nlp_DID, ELS_CMD_LS_RJT);
7698 lpfc_nlp_put(ndlp);
7699 if (!elsiocb)
7700 goto free_lcb_context;
7701
7702 if (phba->sli_rev == LPFC_SLI_REV4) {
7703 wqe = &elsiocb->wqe;
7704 bf_set(wqe_ctxt_tag, &wqe->generic.wqe_com, lcb_context->rx_id);
7705 bf_set(wqe_rcvoxid, &wqe->xmit_els_rsp.wqe_com,
7706 lcb_context->ox_id);
7707 } else {
7708 icmd = &elsiocb->iocb;
7709 icmd->ulpContext = lcb_context->rx_id;
7710 icmd->unsli3.rcvsli3.ox_id = lcb_context->ox_id;
7711 }
7712
7713 pcmd = (uint8_t *)elsiocb->cmd_dmabuf->virt;
7714
7715 *((uint32_t *)(pcmd)) = ELS_CMD_LS_RJT;
7716 stat = (struct ls_rjt *)(pcmd + sizeof(uint32_t));
7717 stat->un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
7718
7719 if (shdr_add_status == ADD_STATUS_OPERATION_ALREADY_ACTIVE)
7720 stat->un.b.lsRjtRsnCodeExp = LSEXP_CMD_IN_PROGRESS;
7721
7722 elsiocb->cmd_cmpl = lpfc_cmpl_els_rsp;
7723 phba->fc_stat.elsXmitLSRJT++;
7724 elsiocb->ndlp = lpfc_nlp_get(ndlp);
7725 if (!elsiocb->ndlp) {
7726 lpfc_els_free_iocb(phba, elsiocb);
7727 goto free_lcb_context;
7728 }
7729
7730 rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
7731 if (rc == IOCB_ERROR) {
7732 lpfc_els_free_iocb(phba, elsiocb);
7733 lpfc_nlp_put(ndlp);
7734 }
7735free_lcb_context:
7736 kfree(lcb_context);
7737}
7738
7739static int
7740lpfc_sli4_set_beacon(struct lpfc_vport *vport,
7741 struct lpfc_lcb_context *lcb_context,
7742 uint32_t beacon_state)
7743{
7744 struct lpfc_hba *phba = vport->phba;
7745 union lpfc_sli4_cfg_shdr *cfg_shdr;
7746 LPFC_MBOXQ_t *mbox = NULL;
7747 uint32_t len;
7748 int rc;
7749
7750 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
7751 if (!mbox)
7752 return 1;
7753
7754 cfg_shdr = &mbox->u.mqe.un.sli4_config.header.cfg_shdr;
7755 len = sizeof(struct lpfc_mbx_set_beacon_config) -
7756 sizeof(struct lpfc_sli4_cfg_mhdr);
7757 lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_COMMON,
7758 LPFC_MBOX_OPCODE_SET_BEACON_CONFIG, len,
7759 LPFC_SLI4_MBX_EMBED);
7760 mbox->ctx_u.lcb = lcb_context;
7761 mbox->vport = phba->pport;
7762 mbox->mbox_cmpl = lpfc_els_lcb_rsp;
7763 bf_set(lpfc_mbx_set_beacon_port_num, &mbox->u.mqe.un.beacon_config,
7764 phba->sli4_hba.physical_port);
7765 bf_set(lpfc_mbx_set_beacon_state, &mbox->u.mqe.un.beacon_config,
7766 beacon_state);
7767 mbox->u.mqe.un.beacon_config.word5 = 0; /* Reserved */
7768
7769 /*
7770 * Check bv1s bit before issuing the mailbox
7771 * if bv1s == 1, LCB V1 supported
7772 * else, LCB V0 supported
7773 */
7774
7775 if (phba->sli4_hba.pc_sli4_params.bv1s) {
7776 /* COMMON_SET_BEACON_CONFIG_V1 */
7777 cfg_shdr->request.word9 = BEACON_VERSION_V1;
7778 lcb_context->capability |= LCB_CAPABILITY_DURATION;
7779 bf_set(lpfc_mbx_set_beacon_port_type,
7780 &mbox->u.mqe.un.beacon_config, 0);
7781 bf_set(lpfc_mbx_set_beacon_duration_v1,
7782 &mbox->u.mqe.un.beacon_config,
7783 be16_to_cpu(lcb_context->duration));
7784 } else {
7785 /* COMMON_SET_BEACON_CONFIG_V0 */
7786 if (be16_to_cpu(lcb_context->duration) != 0) {
7787 mempool_free(mbox, phba->mbox_mem_pool);
7788 return 1;
7789 }
7790 cfg_shdr->request.word9 = BEACON_VERSION_V0;
7791 lcb_context->capability &= ~(LCB_CAPABILITY_DURATION);
7792 bf_set(lpfc_mbx_set_beacon_state,
7793 &mbox->u.mqe.un.beacon_config, beacon_state);
7794 bf_set(lpfc_mbx_set_beacon_port_type,
7795 &mbox->u.mqe.un.beacon_config, 1);
7796 bf_set(lpfc_mbx_set_beacon_duration,
7797 &mbox->u.mqe.un.beacon_config,
7798 be16_to_cpu(lcb_context->duration));
7799 }
7800
7801 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
7802 if (rc == MBX_NOT_FINISHED) {
7803 mempool_free(mbox, phba->mbox_mem_pool);
7804 return 1;
7805 }
7806
7807 return 0;
7808}
7809
7810
7811/**
7812 * lpfc_els_rcv_lcb - Process an unsolicited LCB
7813 * @vport: pointer to a host virtual N_Port data structure.
7814 * @cmdiocb: pointer to lpfc command iocb data structure.
7815 * @ndlp: pointer to a node-list data structure.
7816 *
7817 * This routine processes an unsolicited LCB(LINK CABLE BEACON) IOCB.
7818 * First, the payload of the unsolicited LCB is checked.
7819 * Then based on Subcommand beacon will either turn on or off.
7820 *
7821 * Return code
7822 * 0 - Sent the acc response
7823 * 1 - Sent the reject response.
7824 **/
7825static int
7826lpfc_els_rcv_lcb(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
7827 struct lpfc_nodelist *ndlp)
7828{
7829 struct lpfc_hba *phba = vport->phba;
7830 struct lpfc_dmabuf *pcmd;
7831 uint8_t *lp;
7832 struct fc_lcb_request_frame *beacon;
7833 struct lpfc_lcb_context *lcb_context;
7834 u8 state, rjt_err = 0;
7835 struct ls_rjt stat;
7836
7837 pcmd = cmdiocb->cmd_dmabuf;
7838 lp = (uint8_t *)pcmd->virt;
7839 beacon = (struct fc_lcb_request_frame *)pcmd->virt;
7840
7841 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
7842 "0192 ELS LCB Data x%x x%x x%x x%x sub x%x "
7843 "type x%x frequency %x duration x%x\n",
7844 lp[0], lp[1], lp[2],
7845 beacon->lcb_command,
7846 beacon->lcb_sub_command,
7847 beacon->lcb_type,
7848 beacon->lcb_frequency,
7849 be16_to_cpu(beacon->lcb_duration));
7850
7851 if (beacon->lcb_sub_command != LPFC_LCB_ON &&
7852 beacon->lcb_sub_command != LPFC_LCB_OFF) {
7853 rjt_err = LSRJT_CMD_UNSUPPORTED;
7854 goto rjt;
7855 }
7856
7857 if (phba->sli_rev < LPFC_SLI_REV4 ||
7858 test_bit(HBA_FCOE_MODE, &phba->hba_flag) ||
7859 (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) <
7860 LPFC_SLI_INTF_IF_TYPE_2)) {
7861 rjt_err = LSRJT_CMD_UNSUPPORTED;
7862 goto rjt;
7863 }
7864
7865 lcb_context = kmalloc_obj(*lcb_context);
7866 if (!lcb_context) {
7867 rjt_err = LSRJT_UNABLE_TPC;
7868 goto rjt;
7869 }
7870
7871 state = (beacon->lcb_sub_command == LPFC_LCB_ON) ? 1 : 0;
7872 lcb_context->sub_command = beacon->lcb_sub_command;
7873 lcb_context->capability = 0;
7874 lcb_context->type = beacon->lcb_type;
7875 lcb_context->frequency = beacon->lcb_frequency;
7876 lcb_context->duration = beacon->lcb_duration;
7877 lcb_context->ox_id = get_job_rcvoxid(phba, cmdiocb);
7878 lcb_context->rx_id = get_job_ulpcontext(phba, cmdiocb);
7879 lcb_context->ndlp = lpfc_nlp_get(ndlp);
7880 if (!lcb_context->ndlp) {
7881 rjt_err = LSRJT_UNABLE_TPC;
7882 goto rjt_free;
7883 }
7884
7885 if (lpfc_sli4_set_beacon(vport, lcb_context, state)) {
7886 lpfc_printf_vlog(ndlp->vport, KERN_ERR, LOG_TRACE_EVENT,
7887 "0193 failed to send mail box");
7888 lpfc_nlp_put(ndlp);
7889 rjt_err = LSRJT_UNABLE_TPC;
7890 goto rjt_free;
7891 }
7892 return 0;
7893
7894rjt_free:
7895 kfree(lcb_context);
7896rjt:
7897 memset(&stat, 0, sizeof(stat));
7898 stat.un.b.lsRjtRsnCode = rjt_err;
7899 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
7900 return 1;
7901}
7902
7903
7904/**
7905 * lpfc_els_flush_rscn - Clean up any rscn activities with a vport
7906 * @vport: pointer to a host virtual N_Port data structure.
7907 *
7908 * This routine cleans up any Registration State Change Notification
7909 * (RSCN) activity with a @vport. Note that the fc_rscn_flush flag of the
7910 * @vport together with the host_lock is used to prevent multiple thread
7911 * trying to access the RSCN array on a same @vport at the same time.
7912 **/
7913void
7914lpfc_els_flush_rscn(struct lpfc_vport *vport)
7915{
7916 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
7917 struct lpfc_hba *phba = vport->phba;
7918 int i;
7919
7920 spin_lock_irq(shost->host_lock);
7921 if (vport->fc_rscn_flush) {
7922 /* Another thread is walking fc_rscn_id_list on this vport */
7923 spin_unlock_irq(shost->host_lock);
7924 return;
7925 }
7926 /* Indicate we are walking lpfc_els_flush_rscn on this vport */
7927 vport->fc_rscn_flush = 1;
7928 spin_unlock_irq(shost->host_lock);
7929
7930 for (i = 0; i < vport->fc_rscn_id_cnt; i++) {
7931 lpfc_in_buf_free(phba, vport->fc_rscn_id_list[i]);
7932 vport->fc_rscn_id_list[i] = NULL;
7933 }
7934 clear_bit(FC_RSCN_MODE, &vport->fc_flag);
7935 clear_bit(FC_RSCN_DISCOVERY, &vport->fc_flag);
7936 spin_lock_irq(shost->host_lock);
7937 vport->fc_rscn_id_cnt = 0;
7938 spin_unlock_irq(shost->host_lock);
7939 lpfc_can_disctmo(vport);
7940 /* Indicate we are done walking this fc_rscn_id_list */
7941 vport->fc_rscn_flush = 0;
7942}
7943
7944/**
7945 * lpfc_rscn_payload_check - Check whether there is a pending rscn to a did
7946 * @vport: pointer to a host virtual N_Port data structure.
7947 * @did: remote destination port identifier.
7948 *
7949 * This routine checks whether there is any pending Registration State
7950 * Configuration Notification (RSCN) to a @did on @vport.
7951 *
7952 * Return code
7953 * None zero - The @did matched with a pending rscn
7954 * 0 - not able to match @did with a pending rscn
7955 **/
7956int
7957lpfc_rscn_payload_check(struct lpfc_vport *vport, uint32_t did)
7958{
7959 D_ID ns_did;
7960 D_ID rscn_did;
7961 uint32_t *lp;
7962 uint32_t payload_len, i;
7963 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
7964
7965 ns_did.un.word = did;
7966
7967 /* Never match fabric nodes for RSCNs */
7968 if ((did & Fabric_DID_MASK) == Fabric_DID_MASK)
7969 return 0;
7970
7971 /* If we are doing a FULL RSCN rediscovery, match everything */
7972 if (test_bit(FC_RSCN_DISCOVERY, &vport->fc_flag))
7973 return did;
7974
7975 spin_lock_irq(shost->host_lock);
7976 if (vport->fc_rscn_flush) {
7977 /* Another thread is walking fc_rscn_id_list on this vport */
7978 spin_unlock_irq(shost->host_lock);
7979 return 0;
7980 }
7981 /* Indicate we are walking fc_rscn_id_list on this vport */
7982 vport->fc_rscn_flush = 1;
7983 spin_unlock_irq(shost->host_lock);
7984 for (i = 0; i < vport->fc_rscn_id_cnt; i++) {
7985 lp = vport->fc_rscn_id_list[i]->virt;
7986 payload_len = be32_to_cpu(*lp++ & ~ELS_CMD_MASK);
7987 payload_len -= sizeof(uint32_t); /* take off word 0 */
7988 while (payload_len) {
7989 rscn_did.un.word = be32_to_cpu(*lp++);
7990 payload_len -= sizeof(uint32_t);
7991 switch (rscn_did.un.b.resv & RSCN_ADDRESS_FORMAT_MASK) {
7992 case RSCN_ADDRESS_FORMAT_PORT:
7993 if ((ns_did.un.b.domain == rscn_did.un.b.domain)
7994 && (ns_did.un.b.area == rscn_did.un.b.area)
7995 && (ns_did.un.b.id == rscn_did.un.b.id))
7996 goto return_did_out;
7997 break;
7998 case RSCN_ADDRESS_FORMAT_AREA:
7999 if ((ns_did.un.b.domain == rscn_did.un.b.domain)
8000 && (ns_did.un.b.area == rscn_did.un.b.area))
8001 goto return_did_out;
8002 break;
8003 case RSCN_ADDRESS_FORMAT_DOMAIN:
8004 if (ns_did.un.b.domain == rscn_did.un.b.domain)
8005 goto return_did_out;
8006 break;
8007 case RSCN_ADDRESS_FORMAT_FABRIC:
8008 goto return_did_out;
8009 }
8010 }
8011 }
8012 /* Indicate we are done with walking fc_rscn_id_list on this vport */
8013 vport->fc_rscn_flush = 0;
8014 return 0;
8015return_did_out:
8016 /* Indicate we are done with walking fc_rscn_id_list on this vport */
8017 vport->fc_rscn_flush = 0;
8018 return did;
8019}
8020
8021/**
8022 * lpfc_rscn_recovery_check - Send recovery event to vport nodes matching rscn
8023 * @vport: pointer to a host virtual N_Port data structure.
8024 *
8025 * This routine sends recovery (NLP_EVT_DEVICE_RECOVERY) event to the
8026 * state machine for a @vport's nodes that are with pending RSCN (Registration
8027 * State Change Notification).
8028 *
8029 * Return code
8030 * 0 - Successful (currently alway return 0)
8031 **/
8032static int
8033lpfc_rscn_recovery_check(struct lpfc_vport *vport)
8034{
8035 struct lpfc_nodelist *ndlp = NULL, *n;
8036
8037 /* Move all affected nodes by pending RSCNs to NPR state. */
8038 list_for_each_entry_safe(ndlp, n, &vport->fc_nodes, nlp_listp) {
8039 if (test_bit(FC_UNLOADING, &vport->load_flag)) {
8040 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
8041 "1000 %s Unloading set\n",
8042 __func__);
8043 return 0;
8044 }
8045
8046 if ((ndlp->nlp_state == NLP_STE_UNUSED_NODE) ||
8047 !lpfc_rscn_payload_check(vport, ndlp->nlp_DID))
8048 continue;
8049
8050 /* NVME Target mode does not do RSCN Recovery. */
8051 if (vport->phba->nvmet_support)
8052 continue;
8053
8054 /* If we are in the process of doing discovery on this
8055 * NPort, let it continue on its own.
8056 */
8057 switch (ndlp->nlp_state) {
8058 case NLP_STE_PLOGI_ISSUE:
8059 case NLP_STE_ADISC_ISSUE:
8060 case NLP_STE_REG_LOGIN_ISSUE:
8061 case NLP_STE_PRLI_ISSUE:
8062 case NLP_STE_LOGO_ISSUE:
8063 continue;
8064 }
8065
8066 lpfc_disc_state_machine(vport, ndlp, NULL,
8067 NLP_EVT_DEVICE_RECOVERY);
8068 lpfc_cancel_retry_delay_tmo(vport, ndlp);
8069 }
8070 return 0;
8071}
8072
8073/**
8074 * lpfc_send_rscn_event - Send an RSCN event to management application
8075 * @vport: pointer to a host virtual N_Port data structure.
8076 * @cmdiocb: pointer to lpfc command iocb data structure.
8077 *
8078 * lpfc_send_rscn_event sends an RSCN netlink event to management
8079 * applications.
8080 */
8081static void
8082lpfc_send_rscn_event(struct lpfc_vport *vport,
8083 struct lpfc_iocbq *cmdiocb)
8084{
8085 struct lpfc_dmabuf *pcmd;
8086 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
8087 uint32_t *payload_ptr;
8088 uint32_t payload_len;
8089 struct lpfc_rscn_event_header *rscn_event_data;
8090
8091 pcmd = cmdiocb->cmd_dmabuf;
8092 payload_ptr = (uint32_t *) pcmd->virt;
8093 payload_len = be32_to_cpu(*payload_ptr & ~ELS_CMD_MASK);
8094
8095 rscn_event_data = kmalloc(sizeof(struct lpfc_rscn_event_header) +
8096 payload_len, GFP_KERNEL);
8097 if (!rscn_event_data) {
8098 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
8099 "0147 Failed to allocate memory for RSCN event\n");
8100 return;
8101 }
8102 rscn_event_data->event_type = FC_REG_RSCN_EVENT;
8103 rscn_event_data->payload_length = payload_len;
8104 memcpy(rscn_event_data->rscn_payload, payload_ptr,
8105 payload_len);
8106
8107 fc_host_post_vendor_event(shost,
8108 fc_get_event_number(),
8109 sizeof(struct lpfc_rscn_event_header) + payload_len,
8110 (char *)rscn_event_data,
8111 LPFC_NL_VENDOR_ID);
8112
8113 kfree(rscn_event_data);
8114}
8115
8116/**
8117 * lpfc_els_rcv_rscn - Process an unsolicited rscn iocb
8118 * @vport: pointer to a host virtual N_Port data structure.
8119 * @cmdiocb: pointer to lpfc command iocb data structure.
8120 * @ndlp: pointer to a node-list data structure.
8121 *
8122 * This routine processes an unsolicited RSCN (Registration State Change
8123 * Notification) IOCB. First, the payload of the unsolicited RSCN is walked
8124 * to invoke fc_host_post_event() routine to the FC transport layer. If the
8125 * discover state machine is about to begin discovery, it just accepts the
8126 * RSCN and the discovery process will satisfy the RSCN. If this RSCN only
8127 * contains N_Port IDs for other vports on this HBA, it just accepts the
8128 * RSCN and ignore processing it. If the state machine is in the recovery
8129 * state, the fc_rscn_id_list of this @vport is walked and the
8130 * lpfc_rscn_recovery_check() routine is invoked to send recovery event for
8131 * all nodes that match RSCN payload. Otherwise, the lpfc_els_handle_rscn()
8132 * routine is invoked to handle the RSCN event.
8133 *
8134 * Return code
8135 * 0 - Just sent the acc response
8136 * 1 - Sent the acc response and waited for name server completion
8137 **/
8138static int
8139lpfc_els_rcv_rscn(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
8140 struct lpfc_nodelist *ndlp)
8141{
8142 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
8143 struct lpfc_hba *phba = vport->phba;
8144 struct lpfc_dmabuf *pcmd;
8145 uint32_t *lp, *datap;
8146 uint32_t payload_len, length, nportid, *cmd;
8147 int rscn_cnt;
8148 int rscn_id = 0, hba_id = 0;
8149 int i, tmo;
8150
8151 pcmd = cmdiocb->cmd_dmabuf;
8152 lp = (uint32_t *) pcmd->virt;
8153
8154 payload_len = be32_to_cpu(*lp++ & ~ELS_CMD_MASK);
8155 payload_len -= sizeof(uint32_t); /* take off word 0 */
8156 /* RSCN received */
8157 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
8158 "0214 RSCN received Data: x%lx x%x x%x x%x\n",
8159 vport->fc_flag, payload_len, *lp,
8160 vport->fc_rscn_id_cnt);
8161
8162 /* Send an RSCN event to the management application */
8163 lpfc_send_rscn_event(vport, cmdiocb);
8164
8165 for (i = 0; i < payload_len/sizeof(uint32_t); i++)
8166 fc_host_post_event(shost, fc_get_event_number(),
8167 FCH_EVT_RSCN, lp[i]);
8168
8169 /* Check if RSCN is coming from a direct-connected remote NPort */
8170 if (test_bit(FC_PT2PT, &vport->fc_flag)) {
8171 /* If so, just ACC it, no other action needed for now */
8172 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
8173 "2024 pt2pt RSCN %08x Data: x%lx x%x\n",
8174 *lp, vport->fc_flag, payload_len);
8175 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
8176
8177 /* Check to see if we need to NVME rescan this target
8178 * remoteport.
8179 */
8180 if (ndlp->nlp_fc4_type & NLP_FC4_NVME &&
8181 ndlp->nlp_type & (NLP_NVME_TARGET | NLP_NVME_DISCOVERY))
8182 lpfc_nvme_rescan_port(vport, ndlp);
8183 return 0;
8184 }
8185
8186 /* If we are about to begin discovery, just ACC the RSCN.
8187 * Discovery processing will satisfy it.
8188 */
8189 if (vport->port_state <= LPFC_NS_QRY) {
8190 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
8191 "RCV RSCN ignore: did:x%x/ste:x%x flg:x%lx",
8192 ndlp->nlp_DID, vport->port_state, ndlp->nlp_flag);
8193
8194 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
8195 return 0;
8196 }
8197
8198 /* If this RSCN just contains NPortIDs for other vports on this HBA,
8199 * just ACC and ignore it.
8200 */
8201 if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
8202 !(vport->cfg_peer_port_login)) {
8203 i = payload_len;
8204 datap = lp;
8205 while (i > 0) {
8206 nportid = *datap++;
8207 nportid = ((be32_to_cpu(nportid)) & Mask_DID);
8208 i -= sizeof(uint32_t);
8209 rscn_id++;
8210 if (lpfc_find_vport_by_did(phba, nportid))
8211 hba_id++;
8212 }
8213 if (rscn_id == hba_id) {
8214 /* ALL NPortIDs in RSCN are on HBA */
8215 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
8216 "0219 Ignore RSCN "
8217 "Data: x%lx x%x x%x x%x\n",
8218 vport->fc_flag, payload_len,
8219 *lp, vport->fc_rscn_id_cnt);
8220 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
8221 "RCV RSCN vport: did:x%x/ste:x%x flg:x%lx",
8222 ndlp->nlp_DID, vport->port_state,
8223 ndlp->nlp_flag);
8224
8225 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb,
8226 ndlp, NULL);
8227 /* Restart disctmo if its already running */
8228 if (test_bit(FC_DISC_TMO, &vport->fc_flag)) {
8229 tmo = ((phba->fc_ratov * 3) + 3);
8230 mod_timer(&vport->fc_disctmo,
8231 jiffies + secs_to_jiffies(tmo));
8232 }
8233 return 0;
8234 }
8235 }
8236
8237 spin_lock_irq(shost->host_lock);
8238 if (vport->fc_rscn_flush) {
8239 /* Another thread is walking fc_rscn_id_list on this vport */
8240 spin_unlock_irq(shost->host_lock);
8241 set_bit(FC_RSCN_DISCOVERY, &vport->fc_flag);
8242 /* Send back ACC */
8243 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
8244 return 0;
8245 }
8246 /* Indicate we are walking fc_rscn_id_list on this vport */
8247 vport->fc_rscn_flush = 1;
8248 spin_unlock_irq(shost->host_lock);
8249 /* Get the array count after successfully have the token */
8250 rscn_cnt = vport->fc_rscn_id_cnt;
8251 /* If we are already processing an RSCN, save the received
8252 * RSCN payload buffer, cmdiocb->cmd_dmabuf to process later.
8253 */
8254 if (test_bit(FC_RSCN_MODE, &vport->fc_flag) ||
8255 test_bit(FC_NDISC_ACTIVE, &vport->fc_flag)) {
8256 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
8257 "RCV RSCN defer: did:x%x/ste:x%x flg:x%lx",
8258 ndlp->nlp_DID, vport->port_state, ndlp->nlp_flag);
8259
8260 set_bit(FC_RSCN_DEFERRED, &vport->fc_flag);
8261
8262 /* Restart disctmo if its already running */
8263 if (test_bit(FC_DISC_TMO, &vport->fc_flag)) {
8264 tmo = ((phba->fc_ratov * 3) + 3);
8265 mod_timer(&vport->fc_disctmo,
8266 jiffies + secs_to_jiffies(tmo));
8267 }
8268 if ((rscn_cnt < FC_MAX_HOLD_RSCN) &&
8269 !test_bit(FC_RSCN_DISCOVERY, &vport->fc_flag)) {
8270 set_bit(FC_RSCN_MODE, &vport->fc_flag);
8271 if (rscn_cnt) {
8272 cmd = vport->fc_rscn_id_list[rscn_cnt-1]->virt;
8273 length = be32_to_cpu(*cmd & ~ELS_CMD_MASK);
8274 }
8275 if ((rscn_cnt) &&
8276 (payload_len + length <= LPFC_BPL_SIZE)) {
8277 *cmd &= ELS_CMD_MASK;
8278 *cmd |= cpu_to_be32(payload_len + length);
8279 memcpy(((uint8_t *)cmd) + length, lp,
8280 payload_len);
8281 } else {
8282 vport->fc_rscn_id_list[rscn_cnt] = pcmd;
8283 vport->fc_rscn_id_cnt++;
8284 /* If we zero, cmdiocb->cmd_dmabuf, the calling
8285 * routine will not try to free it.
8286 */
8287 cmdiocb->cmd_dmabuf = NULL;
8288 }
8289 /* Deferred RSCN */
8290 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
8291 "0235 Deferred RSCN "
8292 "Data: x%x x%lx x%x\n",
8293 vport->fc_rscn_id_cnt, vport->fc_flag,
8294 vport->port_state);
8295 } else {
8296 set_bit(FC_RSCN_DISCOVERY, &vport->fc_flag);
8297 /* ReDiscovery RSCN */
8298 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
8299 "0234 ReDiscovery RSCN "
8300 "Data: x%x x%lx x%x\n",
8301 vport->fc_rscn_id_cnt, vport->fc_flag,
8302 vport->port_state);
8303 }
8304 /* Indicate we are done walking fc_rscn_id_list on this vport */
8305 vport->fc_rscn_flush = 0;
8306 /* Send back ACC */
8307 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
8308 /* send RECOVERY event for ALL nodes that match RSCN payload */
8309 lpfc_rscn_recovery_check(vport);
8310 return 0;
8311 }
8312 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
8313 "RCV RSCN: did:x%x/ste:x%x flg:x%lx",
8314 ndlp->nlp_DID, vport->port_state, ndlp->nlp_flag);
8315
8316 set_bit(FC_RSCN_MODE, &vport->fc_flag);
8317 vport->fc_rscn_id_list[vport->fc_rscn_id_cnt++] = pcmd;
8318 /* Indicate we are done walking fc_rscn_id_list on this vport */
8319 vport->fc_rscn_flush = 0;
8320 /*
8321 * If we zero, cmdiocb->cmd_dmabuf, the calling routine will
8322 * not try to free it.
8323 */
8324 cmdiocb->cmd_dmabuf = NULL;
8325 lpfc_set_disctmo(vport);
8326 /* Send back ACC */
8327 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
8328 /* send RECOVERY event for ALL nodes that match RSCN payload */
8329 lpfc_rscn_recovery_check(vport);
8330 return lpfc_els_handle_rscn(vport);
8331}
8332
8333/**
8334 * lpfc_els_handle_rscn - Handle rscn for a vport
8335 * @vport: pointer to a host virtual N_Port data structure.
8336 *
8337 * This routine handles the Registration State Configuration Notification
8338 * (RSCN) for a @vport. If login to NameServer does not exist, a new ndlp shall
8339 * be created and a Port Login (PLOGI) to the NameServer is issued. Otherwise,
8340 * if the ndlp to NameServer exists, a Common Transport (CT) command to the
8341 * NameServer shall be issued. If CT command to the NameServer fails to be
8342 * issued, the lpfc_els_flush_rscn() routine shall be invoked to clean up any
8343 * RSCN activities with the @vport.
8344 *
8345 * Return code
8346 * 0 - Cleaned up rscn on the @vport
8347 * 1 - Wait for plogi to name server before proceed
8348 **/
8349int
8350lpfc_els_handle_rscn(struct lpfc_vport *vport)
8351{
8352 struct lpfc_nodelist *ndlp;
8353 struct lpfc_hba *phba = vport->phba;
8354
8355 /* Ignore RSCN if the port is being torn down. */
8356 if (test_bit(FC_UNLOADING, &vport->load_flag)) {
8357 lpfc_els_flush_rscn(vport);
8358 return 0;
8359 }
8360
8361 /* Start timer for RSCN processing */
8362 lpfc_set_disctmo(vport);
8363
8364 /* RSCN processed */
8365 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
8366 "0215 RSCN processed Data: x%lx x%x x%x x%x x%x x%x\n",
8367 vport->fc_flag, 0, vport->fc_rscn_id_cnt,
8368 vport->port_state, vport->num_disc_nodes,
8369 vport->gidft_inp);
8370
8371 /* To process RSCN, first compare RSCN data with NameServer */
8372 vport->fc_ns_retry = 0;
8373 vport->num_disc_nodes = 0;
8374
8375 ndlp = lpfc_findnode_did(vport, NameServer_DID);
8376 if (ndlp && ndlp->nlp_state == NLP_STE_UNMAPPED_NODE) {
8377 /* Good ndlp, issue CT Request to NameServer. Need to
8378 * know how many gidfts were issued. If none, then just
8379 * flush the RSCN. Otherwise, the outstanding requests
8380 * need to complete.
8381 */
8382 if (phba->cfg_ns_query == LPFC_NS_QUERY_GID_FT) {
8383 if (lpfc_issue_gidft(vport) > 0)
8384 return 1;
8385 } else if (phba->cfg_ns_query == LPFC_NS_QUERY_GID_PT) {
8386 if (lpfc_issue_gidpt(vport) > 0)
8387 return 1;
8388 } else {
8389 return 1;
8390 }
8391 } else {
8392 /* Nameserver login in question. Revalidate. */
8393 if (ndlp) {
8394 ndlp->nlp_prev_state = NLP_STE_UNUSED_NODE;
8395 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
8396 } else {
8397 ndlp = lpfc_nlp_init(vport, NameServer_DID);
8398 if (!ndlp) {
8399 lpfc_els_flush_rscn(vport);
8400 return 0;
8401 }
8402 ndlp->nlp_prev_state = ndlp->nlp_state;
8403 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
8404 }
8405 ndlp->nlp_type |= NLP_FABRIC;
8406 lpfc_issue_els_plogi(vport, NameServer_DID, 0);
8407 /* Wait for NameServer login cmpl before we can
8408 * continue
8409 */
8410 return 1;
8411 }
8412
8413 lpfc_els_flush_rscn(vport);
8414 return 0;
8415}
8416
8417/**
8418 * lpfc_els_rcv_flogi - Process an unsolicited flogi iocb
8419 * @vport: pointer to a host virtual N_Port data structure.
8420 * @cmdiocb: pointer to lpfc command iocb data structure.
8421 * @ndlp: pointer to a node-list data structure.
8422 *
8423 * This routine processes Fabric Login (FLOGI) IOCB received as an ELS
8424 * unsolicited event. An unsolicited FLOGI can be received in a point-to-
8425 * point topology. As an unsolicited FLOGI should not be received in a loop
8426 * mode, any unsolicited FLOGI received in loop mode shall be ignored. The
8427 * lpfc_check_sparm() routine is invoked to check the parameters in the
8428 * unsolicited FLOGI. If parameters validation failed, the routine
8429 * lpfc_els_rsp_reject() shall be called with reject reason code set to
8430 * LSEXP_SPARM_OPTIONS to reject the FLOGI. Otherwise, the Port WWN in the
8431 * FLOGI shall be compared with the Port WWN of the @vport to determine who
8432 * will initiate PLOGI. The higher lexicographical value party shall has
8433 * higher priority (as the winning port) and will initiate PLOGI and
8434 * communicate Port_IDs (Addresses) for both nodes in PLOGI. The result
8435 * of this will be marked in the @vport fc_flag field with FC_PT2PT_PLOGI
8436 * and then the lpfc_els_rsp_acc() routine is invoked to accept the FLOGI.
8437 *
8438 * Return code
8439 * 0 - Successfully processed the unsolicited flogi
8440 * 1 - Failed to process the unsolicited flogi
8441 **/
8442static int
8443lpfc_els_rcv_flogi(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
8444 struct lpfc_nodelist *ndlp)
8445{
8446 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
8447 struct lpfc_hba *phba = vport->phba;
8448 struct lpfc_dmabuf *pcmd = cmdiocb->cmd_dmabuf;
8449 uint32_t *lp = (uint32_t *) pcmd->virt;
8450 union lpfc_wqe128 *wqe = &cmdiocb->wqe;
8451 struct serv_parm *sp;
8452 LPFC_MBOXQ_t *mbox;
8453 uint32_t cmd, did;
8454 int rc;
8455 unsigned long fc_flag = 0;
8456 uint32_t port_state = 0;
8457
8458 /* Clear external loopback plug detected flag */
8459 phba->link_flag &= ~LS_EXTERNAL_LOOPBACK;
8460
8461 cmd = *lp++;
8462 sp = (struct serv_parm *) lp;
8463
8464 /* FLOGI received */
8465
8466 lpfc_set_disctmo(vport);
8467
8468 if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
8469 /* We should never receive a FLOGI in loop mode, ignore it */
8470 did = bf_get(wqe_els_did, &wqe->xmit_els_rsp.wqe_dest);
8471
8472 /* An FLOGI ELS command <elsCmd> was received from DID <did> in
8473 Loop Mode */
8474 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
8475 "0113 An FLOGI ELS command x%x was "
8476 "received from DID x%x in Loop Mode\n",
8477 cmd, did);
8478 return 1;
8479 }
8480
8481 (void) lpfc_check_sparm(vport, ndlp, sp, CLASS3, 1);
8482
8483 /*
8484 * If our portname is greater than the remote portname,
8485 * then we initiate Nport login.
8486 */
8487
8488 rc = memcmp(&vport->fc_portname, &sp->portName,
8489 sizeof(struct lpfc_name));
8490
8491 if (!rc) {
8492 if (phba->sli_rev < LPFC_SLI_REV4) {
8493 mbox = mempool_alloc(phba->mbox_mem_pool,
8494 GFP_KERNEL);
8495 if (!mbox)
8496 return 1;
8497 lpfc_linkdown(phba);
8498 lpfc_init_link(phba, mbox,
8499 phba->cfg_topology,
8500 phba->cfg_link_speed);
8501 mbox->u.mb.un.varInitLnk.lipsr_AL_PA = 0;
8502 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
8503 mbox->vport = vport;
8504 rc = lpfc_sli_issue_mbox(phba, mbox,
8505 MBX_NOWAIT);
8506 lpfc_set_loopback_flag(phba);
8507 if (rc == MBX_NOT_FINISHED)
8508 mempool_free(mbox, phba->mbox_mem_pool);
8509 return 1;
8510 }
8511
8512 /* External loopback plug insertion detected */
8513 phba->link_flag |= LS_EXTERNAL_LOOPBACK;
8514
8515 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS | LOG_LIBDFC,
8516 "1119 External Loopback plug detected\n");
8517
8518 /* abort the flogi coming back to ourselves
8519 * due to external loopback on the port.
8520 */
8521 lpfc_els_abort_flogi(phba);
8522 return 0;
8523
8524 } else if (rc > 0) { /* greater than */
8525 set_bit(FC_PT2PT_PLOGI, &vport->fc_flag);
8526
8527 /* If we have the high WWPN we can assign our own
8528 * myDID; otherwise, we have to WAIT for a PLOGI
8529 * from the remote NPort to find out what it
8530 * will be.
8531 */
8532 vport->fc_myDID = PT2PT_LocalID;
8533 } else {
8534 vport->fc_myDID = PT2PT_RemoteID;
8535 }
8536
8537 /*
8538 * The vport state should go to LPFC_FLOGI only
8539 * AFTER we issue a FLOGI, not receive one.
8540 */
8541 spin_lock_irq(shost->host_lock);
8542 fc_flag = vport->fc_flag;
8543 port_state = vport->port_state;
8544 /* Acking an unsol FLOGI. Count 1 for link bounce
8545 * work-around.
8546 */
8547 vport->rcv_flogi_cnt++;
8548 spin_unlock_irq(shost->host_lock);
8549 set_bit(FC_PT2PT, &vport->fc_flag);
8550 clear_bit(FC_FABRIC, &vport->fc_flag);
8551 clear_bit(FC_PUBLIC_LOOP, &vport->fc_flag);
8552 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
8553 "3311 Rcv Flogi PS x%x new PS x%x "
8554 "fc_flag x%lx new fc_flag x%lx, hba_flag x%lx\n",
8555 port_state, vport->port_state,
8556 fc_flag, vport->fc_flag, phba->hba_flag);
8557
8558 /*
8559 * We temporarily set fc_myDID to make it look like we are
8560 * a Fabric. This is done just so we end up with the right
8561 * did / sid on the FLOGI ACC rsp.
8562 */
8563 did = vport->fc_myDID;
8564 vport->fc_myDID = Fabric_DID;
8565
8566 memcpy(&phba->fc_fabparam, sp, sizeof(struct serv_parm));
8567
8568 /* Defer ACC response until AFTER we issue a FLOGI */
8569 if (!test_bit(HBA_FLOGI_ISSUED, &phba->hba_flag)) {
8570 phba->defer_flogi_acc.rx_id = bf_get(wqe_ctxt_tag,
8571 &wqe->xmit_els_rsp.wqe_com);
8572 phba->defer_flogi_acc.ox_id = bf_get(wqe_rcvoxid,
8573 &wqe->xmit_els_rsp.wqe_com);
8574
8575 vport->fc_myDID = did;
8576 phba->defer_flogi_acc.flag = true;
8577
8578 /* This nlp_get is paired with nlp_puts that reset the
8579 * defer_flogi_acc.flag back to false. We need to retain
8580 * a kref on the ndlp until the deferred FLOGI ACC is
8581 * processed or cancelled.
8582 */
8583 phba->defer_flogi_acc.ndlp = lpfc_nlp_get(ndlp);
8584
8585 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
8586 "3344 Deferring FLOGI ACC: rx_id: x%x,"
8587 " ox_id: x%x, ndlp x%px, hba_flag x%lx\n",
8588 phba->defer_flogi_acc.rx_id,
8589 phba->defer_flogi_acc.ox_id,
8590 phba->defer_flogi_acc.ndlp,
8591 phba->hba_flag);
8592 return 0;
8593 }
8594
8595 /* Send back ACC */
8596 lpfc_els_rsp_acc(vport, ELS_CMD_FLOGI, cmdiocb, ndlp, NULL);
8597
8598 /* Now lets put fc_myDID back to what its supposed to be */
8599 vport->fc_myDID = did;
8600
8601 return 0;
8602}
8603
8604/**
8605 * lpfc_els_rcv_rnid - Process an unsolicited rnid iocb
8606 * @vport: pointer to a host virtual N_Port data structure.
8607 * @cmdiocb: pointer to lpfc command iocb data structure.
8608 * @ndlp: pointer to a node-list data structure.
8609 *
8610 * This routine processes Request Node Identification Data (RNID) IOCB
8611 * received as an ELS unsolicited event. Only when the RNID specified format
8612 * 0x0 or 0xDF (Topology Discovery Specific Node Identification Data)
8613 * present, this routine will invoke the lpfc_els_rsp_rnid_acc() routine to
8614 * Accept (ACC) the RNID ELS command. All the other RNID formats are
8615 * rejected by invoking the lpfc_els_rsp_reject() routine.
8616 *
8617 * Return code
8618 * 0 - Successfully processed rnid iocb (currently always return 0)
8619 **/
8620static int
8621lpfc_els_rcv_rnid(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
8622 struct lpfc_nodelist *ndlp)
8623{
8624 struct lpfc_dmabuf *pcmd;
8625 uint32_t *lp;
8626 RNID *rn;
8627 struct ls_rjt stat;
8628
8629 pcmd = cmdiocb->cmd_dmabuf;
8630 lp = (uint32_t *) pcmd->virt;
8631
8632 lp++;
8633 rn = (RNID *) lp;
8634
8635 /* RNID received */
8636
8637 switch (rn->Format) {
8638 case 0:
8639 case RNID_TOPOLOGY_DISC:
8640 /* Send back ACC */
8641 lpfc_els_rsp_rnid_acc(vport, rn->Format, cmdiocb, ndlp);
8642 break;
8643 default:
8644 /* Reject this request because format not supported */
8645 stat.un.b.lsRjtRsvd0 = 0;
8646 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
8647 stat.un.b.lsRjtRsnCodeExp = LSEXP_CANT_GIVE_DATA;
8648 stat.un.b.vendorUnique = 0;
8649 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
8650 NULL);
8651 }
8652 return 0;
8653}
8654
8655/**
8656 * lpfc_els_rcv_echo - Process an unsolicited echo iocb
8657 * @vport: pointer to a host virtual N_Port data structure.
8658 * @cmdiocb: pointer to lpfc command iocb data structure.
8659 * @ndlp: pointer to a node-list data structure.
8660 *
8661 * Return code
8662 * 0 - Successfully processed echo iocb (currently always return 0)
8663 **/
8664static int
8665lpfc_els_rcv_echo(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
8666 struct lpfc_nodelist *ndlp)
8667{
8668 uint8_t *pcmd;
8669
8670 pcmd = (uint8_t *)cmdiocb->cmd_dmabuf->virt;
8671
8672 /* skip over first word of echo command to find echo data */
8673 pcmd += sizeof(uint32_t);
8674
8675 lpfc_els_rsp_echo_acc(vport, pcmd, cmdiocb, ndlp);
8676 return 0;
8677}
8678
8679/**
8680 * lpfc_els_rcv_lirr - Process an unsolicited lirr iocb
8681 * @vport: pointer to a host virtual N_Port data structure.
8682 * @cmdiocb: pointer to lpfc command iocb data structure.
8683 * @ndlp: pointer to a node-list data structure.
8684 *
8685 * This routine processes a Link Incident Report Registration(LIRR) IOCB
8686 * received as an ELS unsolicited event. Currently, this function just invokes
8687 * the lpfc_els_rsp_reject() routine to reject the LIRR IOCB unconditionally.
8688 *
8689 * Return code
8690 * 0 - Successfully processed lirr iocb (currently always return 0)
8691 **/
8692static int
8693lpfc_els_rcv_lirr(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
8694 struct lpfc_nodelist *ndlp)
8695{
8696 struct ls_rjt stat;
8697
8698 /* For now, unconditionally reject this command */
8699 stat.un.b.lsRjtRsvd0 = 0;
8700 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
8701 stat.un.b.lsRjtRsnCodeExp = LSEXP_CANT_GIVE_DATA;
8702 stat.un.b.vendorUnique = 0;
8703 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
8704 return 0;
8705}
8706
8707/**
8708 * lpfc_els_rcv_rrq - Process an unsolicited rrq iocb
8709 * @vport: pointer to a host virtual N_Port data structure.
8710 * @cmdiocb: pointer to lpfc command iocb data structure.
8711 * @ndlp: pointer to a node-list data structure.
8712 *
8713 * This routine processes a Reinstate Recovery Qualifier (RRQ) IOCB
8714 * received as an ELS unsolicited event. A request to RRQ shall only
8715 * be accepted if the Originator Nx_Port N_Port_ID or the Responder
8716 * Nx_Port N_Port_ID of the target Exchange is the same as the
8717 * N_Port_ID of the Nx_Port that makes the request. If the RRQ is
8718 * not accepted, an LS_RJT with reason code "Unable to perform
8719 * command request" and reason code explanation "Invalid Originator
8720 * S_ID" shall be returned. For now, we just unconditionally accept
8721 * RRQ from the target.
8722 **/
8723static void
8724lpfc_els_rcv_rrq(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
8725 struct lpfc_nodelist *ndlp)
8726{
8727 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
8728 if (vport->phba->sli_rev == LPFC_SLI_REV4)
8729 lpfc_els_clear_rrq(vport, cmdiocb, ndlp);
8730}
8731
8732/**
8733 * lpfc_els_rsp_rls_acc - Completion callbk func for MBX_READ_LNK_STAT mbox cmd
8734 * @phba: pointer to lpfc hba data structure.
8735 * @pmb: pointer to the driver internal queue element for mailbox command.
8736 *
8737 * This routine is the completion callback function for the MBX_READ_LNK_STAT
8738 * mailbox command. This callback function is to actually send the Accept
8739 * (ACC) response to a Read Link Status (RLS) unsolicited IOCB event. It
8740 * collects the link statistics from the completion of the MBX_READ_LNK_STAT
8741 * mailbox command, constructs the RLS response with the link statistics
8742 * collected, and then invokes the lpfc_sli_issue_iocb() routine to send ACC
8743 * response to the RLS.
8744 *
8745 * Note that the ndlp reference count will be incremented by 1 for holding the
8746 * ndlp and the reference to ndlp will be stored into the ndlp field of
8747 * the IOCB for the completion callback function to the RLS Accept Response
8748 * ELS IOCB command.
8749 *
8750 **/
8751static void
8752lpfc_els_rsp_rls_acc(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
8753{
8754 int rc = 0;
8755 MAILBOX_t *mb;
8756 IOCB_t *icmd;
8757 union lpfc_wqe128 *wqe;
8758 struct RLS_RSP *rls_rsp;
8759 uint8_t *pcmd;
8760 struct lpfc_iocbq *elsiocb;
8761 struct lpfc_nodelist *ndlp;
8762 uint16_t oxid;
8763 uint16_t rxid;
8764 uint32_t cmdsize;
8765 u32 ulp_context;
8766
8767 mb = &pmb->u.mb;
8768
8769 ndlp = pmb->ctx_ndlp;
8770 rxid = (uint16_t)(pmb->ctx_u.ox_rx_id & 0xffff);
8771 oxid = (uint16_t)((pmb->ctx_u.ox_rx_id >> 16) & 0xffff);
8772 memset(&pmb->ctx_u, 0, sizeof(pmb->ctx_u));
8773 pmb->ctx_ndlp = NULL;
8774
8775 if (mb->mbxStatus) {
8776 mempool_free(pmb, phba->mbox_mem_pool);
8777 return;
8778 }
8779
8780 cmdsize = sizeof(struct RLS_RSP) + sizeof(uint32_t);
8781 elsiocb = lpfc_prep_els_iocb(phba->pport, 0, cmdsize,
8782 lpfc_max_els_tries, ndlp,
8783 ndlp->nlp_DID, ELS_CMD_ACC);
8784
8785 /* Decrement the ndlp reference count from previous mbox command */
8786 lpfc_nlp_put(ndlp);
8787
8788 if (!elsiocb) {
8789 mempool_free(pmb, phba->mbox_mem_pool);
8790 return;
8791 }
8792
8793 ulp_context = get_job_ulpcontext(phba, elsiocb);
8794 if (phba->sli_rev == LPFC_SLI_REV4) {
8795 wqe = &elsiocb->wqe;
8796 /* Xri / rx_id */
8797 bf_set(wqe_ctxt_tag, &wqe->generic.wqe_com, rxid);
8798 bf_set(wqe_rcvoxid, &wqe->xmit_els_rsp.wqe_com, oxid);
8799 } else {
8800 icmd = &elsiocb->iocb;
8801 icmd->ulpContext = rxid;
8802 icmd->unsli3.rcvsli3.ox_id = oxid;
8803 }
8804
8805 pcmd = (uint8_t *)elsiocb->cmd_dmabuf->virt;
8806 *((uint32_t *) (pcmd)) = ELS_CMD_ACC;
8807 pcmd += sizeof(uint32_t); /* Skip past command */
8808 rls_rsp = (struct RLS_RSP *)pcmd;
8809
8810 rls_rsp->linkFailureCnt = cpu_to_be32(mb->un.varRdLnk.linkFailureCnt);
8811 rls_rsp->lossSyncCnt = cpu_to_be32(mb->un.varRdLnk.lossSyncCnt);
8812 rls_rsp->lossSignalCnt = cpu_to_be32(mb->un.varRdLnk.lossSignalCnt);
8813 rls_rsp->primSeqErrCnt = cpu_to_be32(mb->un.varRdLnk.primSeqErrCnt);
8814 rls_rsp->invalidXmitWord = cpu_to_be32(mb->un.varRdLnk.invalidXmitWord);
8815 rls_rsp->crcCnt = cpu_to_be32(mb->un.varRdLnk.crcCnt);
8816 mempool_free(pmb, phba->mbox_mem_pool);
8817 /* Xmit ELS RLS ACC response tag <ulpIoTag> */
8818 lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_ELS,
8819 "2874 Xmit ELS RLS ACC response tag x%x xri x%x, "
8820 "did x%x, nlp_flag x%lx, nlp_state x%x, rpi x%x\n",
8821 elsiocb->iotag, ulp_context,
8822 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
8823 ndlp->nlp_rpi);
8824 elsiocb->cmd_cmpl = lpfc_cmpl_els_rsp;
8825 phba->fc_stat.elsXmitACC++;
8826 elsiocb->ndlp = lpfc_nlp_get(ndlp);
8827 if (!elsiocb->ndlp) {
8828 lpfc_els_free_iocb(phba, elsiocb);
8829 return;
8830 }
8831
8832 rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
8833 if (rc == IOCB_ERROR) {
8834 lpfc_els_free_iocb(phba, elsiocb);
8835 lpfc_nlp_put(ndlp);
8836 }
8837 return;
8838}
8839
8840/**
8841 * lpfc_els_rcv_rls - Process an unsolicited rls iocb
8842 * @vport: pointer to a host virtual N_Port data structure.
8843 * @cmdiocb: pointer to lpfc command iocb data structure.
8844 * @ndlp: pointer to a node-list data structure.
8845 *
8846 * This routine processes Read Link Status (RLS) IOCB received as an
8847 * ELS unsolicited event. It first checks the remote port state. If the
8848 * remote port is not in NLP_STE_UNMAPPED_NODE state or NLP_STE_MAPPED_NODE
8849 * state, it invokes the lpfc_els_rsl_reject() routine to send the reject
8850 * response. Otherwise, it issue the MBX_READ_LNK_STAT mailbox command
8851 * for reading the HBA link statistics. It is for the callback function,
8852 * lpfc_els_rsp_rls_acc(), set to the MBX_READ_LNK_STAT mailbox command
8853 * to actually sending out RPL Accept (ACC) response.
8854 *
8855 * Return codes
8856 * 0 - Successfully processed rls iocb (currently always return 0)
8857 **/
8858static int
8859lpfc_els_rcv_rls(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
8860 struct lpfc_nodelist *ndlp)
8861{
8862 struct lpfc_hba *phba = vport->phba;
8863 LPFC_MBOXQ_t *mbox;
8864 struct ls_rjt stat;
8865 u32 ctx = get_job_ulpcontext(phba, cmdiocb);
8866 u32 ox_id = get_job_rcvoxid(phba, cmdiocb);
8867
8868 if ((ndlp->nlp_state != NLP_STE_UNMAPPED_NODE) &&
8869 (ndlp->nlp_state != NLP_STE_MAPPED_NODE))
8870 /* reject the unsolicited RLS request and done with it */
8871 goto reject_out;
8872
8873 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_ATOMIC);
8874 if (mbox) {
8875 lpfc_read_lnk_stat(phba, mbox);
8876 mbox->ctx_u.ox_rx_id = ox_id << 16 | ctx;
8877 mbox->ctx_ndlp = lpfc_nlp_get(ndlp);
8878 if (!mbox->ctx_ndlp)
8879 goto node_err;
8880 mbox->vport = vport;
8881 mbox->mbox_cmpl = lpfc_els_rsp_rls_acc;
8882 if (lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT)
8883 != MBX_NOT_FINISHED)
8884 /* Mbox completion will send ELS Response */
8885 return 0;
8886 /* Decrement reference count used for the failed mbox
8887 * command.
8888 */
8889 lpfc_nlp_put(ndlp);
8890node_err:
8891 mempool_free(mbox, phba->mbox_mem_pool);
8892 }
8893reject_out:
8894 /* issue rejection response */
8895 stat.un.b.lsRjtRsvd0 = 0;
8896 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
8897 stat.un.b.lsRjtRsnCodeExp = LSEXP_CANT_GIVE_DATA;
8898 stat.un.b.vendorUnique = 0;
8899 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
8900 return 0;
8901}
8902
8903/**
8904 * lpfc_els_rcv_rtv - Process an unsolicited rtv iocb
8905 * @vport: pointer to a host virtual N_Port data structure.
8906 * @cmdiocb: pointer to lpfc command iocb data structure.
8907 * @ndlp: pointer to a node-list data structure.
8908 *
8909 * This routine processes Read Timeout Value (RTV) IOCB received as an
8910 * ELS unsolicited event. It first checks the remote port state. If the
8911 * remote port is not in NLP_STE_UNMAPPED_NODE state or NLP_STE_MAPPED_NODE
8912 * state, it invokes the lpfc_els_rsl_reject() routine to send the reject
8913 * response. Otherwise, it sends the Accept(ACC) response to a Read Timeout
8914 * Value (RTV) unsolicited IOCB event.
8915 *
8916 * Note that the ndlp reference count will be incremented by 1 for holding the
8917 * ndlp and the reference to ndlp will be stored into the ndlp field of
8918 * the IOCB for the completion callback function to the RTV Accept Response
8919 * ELS IOCB command.
8920 *
8921 * Return codes
8922 * 0 - Successfully processed rtv iocb (currently always return 0)
8923 **/
8924static int
8925lpfc_els_rcv_rtv(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
8926 struct lpfc_nodelist *ndlp)
8927{
8928 int rc = 0;
8929 IOCB_t *icmd;
8930 union lpfc_wqe128 *wqe;
8931 struct lpfc_hba *phba = vport->phba;
8932 struct ls_rjt stat;
8933 struct RTV_RSP *rtv_rsp;
8934 uint8_t *pcmd;
8935 struct lpfc_iocbq *elsiocb;
8936 uint32_t cmdsize;
8937 u32 ulp_context;
8938
8939 if ((ndlp->nlp_state != NLP_STE_UNMAPPED_NODE) &&
8940 (ndlp->nlp_state != NLP_STE_MAPPED_NODE))
8941 /* reject the unsolicited RTV request and done with it */
8942 goto reject_out;
8943
8944 cmdsize = sizeof(struct RTV_RSP) + sizeof(uint32_t);
8945 elsiocb = lpfc_prep_els_iocb(phba->pport, 0, cmdsize,
8946 lpfc_max_els_tries, ndlp,
8947 ndlp->nlp_DID, ELS_CMD_ACC);
8948
8949 if (!elsiocb)
8950 return 1;
8951
8952 pcmd = (uint8_t *)elsiocb->cmd_dmabuf->virt;
8953 *((uint32_t *) (pcmd)) = ELS_CMD_ACC;
8954 pcmd += sizeof(uint32_t); /* Skip past command */
8955
8956 ulp_context = get_job_ulpcontext(phba, elsiocb);
8957 /* use the command's xri in the response */
8958 if (phba->sli_rev == LPFC_SLI_REV4) {
8959 wqe = &elsiocb->wqe;
8960 bf_set(wqe_ctxt_tag, &wqe->generic.wqe_com,
8961 get_job_ulpcontext(phba, cmdiocb));
8962 bf_set(wqe_rcvoxid, &wqe->xmit_els_rsp.wqe_com,
8963 get_job_rcvoxid(phba, cmdiocb));
8964 } else {
8965 icmd = &elsiocb->iocb;
8966 icmd->ulpContext = get_job_ulpcontext(phba, cmdiocb);
8967 icmd->unsli3.rcvsli3.ox_id = get_job_rcvoxid(phba, cmdiocb);
8968 }
8969
8970 rtv_rsp = (struct RTV_RSP *)pcmd;
8971
8972 /* populate RTV payload */
8973 rtv_rsp->ratov = cpu_to_be32(phba->fc_ratov * 1000); /* report msecs */
8974 rtv_rsp->edtov = cpu_to_be32(phba->fc_edtov);
8975 bf_set(qtov_edtovres, rtv_rsp, phba->fc_edtovResol ? 1 : 0);
8976 bf_set(qtov_rttov, rtv_rsp, 0); /* Field is for FC ONLY */
8977 rtv_rsp->qtov = cpu_to_be32(rtv_rsp->qtov);
8978
8979 /* Xmit ELS RLS ACC response tag <ulpIoTag> */
8980 lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_ELS,
8981 "2875 Xmit ELS RTV ACC response tag x%x xri x%x, "
8982 "did x%x, nlp_flag x%lx, nlp_state x%x, rpi x%x, "
8983 "Data: x%x x%x x%x\n",
8984 elsiocb->iotag, ulp_context,
8985 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
8986 ndlp->nlp_rpi,
8987 rtv_rsp->ratov, rtv_rsp->edtov, rtv_rsp->qtov);
8988 elsiocb->cmd_cmpl = lpfc_cmpl_els_rsp;
8989 phba->fc_stat.elsXmitACC++;
8990 elsiocb->ndlp = lpfc_nlp_get(ndlp);
8991 if (!elsiocb->ndlp) {
8992 lpfc_els_free_iocb(phba, elsiocb);
8993 return 0;
8994 }
8995
8996 rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
8997 if (rc == IOCB_ERROR) {
8998 lpfc_els_free_iocb(phba, elsiocb);
8999 lpfc_nlp_put(ndlp);
9000 }
9001 return 0;
9002
9003reject_out:
9004 /* issue rejection response */
9005 stat.un.b.lsRjtRsvd0 = 0;
9006 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
9007 stat.un.b.lsRjtRsnCodeExp = LSEXP_CANT_GIVE_DATA;
9008 stat.un.b.vendorUnique = 0;
9009 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
9010 return 0;
9011}
9012
9013/* lpfc_issue_els_rrq - Process an unsolicited rrq iocb
9014 * @vport: pointer to a host virtual N_Port data structure.
9015 * @ndlp: pointer to a node-list data structure.
9016 * @did: DID of the target.
9017 * @rrq: Pointer to the rrq struct.
9018 *
9019 * Build a ELS RRQ command and send it to the target. If the issue_iocb is
9020 * successful, the completion handler will clear the RRQ.
9021 *
9022 * Return codes
9023 * 0 - Successfully sent rrq els iocb.
9024 * 1 - Failed to send rrq els iocb.
9025 **/
9026static int
9027lpfc_issue_els_rrq(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
9028 uint32_t did, struct lpfc_node_rrq *rrq)
9029{
9030 struct lpfc_hba *phba = vport->phba;
9031 struct RRQ *els_rrq;
9032 struct lpfc_iocbq *elsiocb;
9033 uint8_t *pcmd;
9034 uint16_t cmdsize;
9035 int ret;
9036
9037 if (!ndlp)
9038 return 1;
9039
9040 /* If ndlp is not NULL, we will bump the reference count on it */
9041 cmdsize = (sizeof(uint32_t) + sizeof(struct RRQ));
9042 elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, 0, ndlp, did,
9043 ELS_CMD_RRQ);
9044 if (!elsiocb)
9045 return 1;
9046
9047 pcmd = (uint8_t *)elsiocb->cmd_dmabuf->virt;
9048
9049 /* For RRQ request, remainder of payload is Exchange IDs */
9050 *((uint32_t *) (pcmd)) = ELS_CMD_RRQ;
9051 pcmd += sizeof(uint32_t);
9052 els_rrq = (struct RRQ *) pcmd;
9053
9054 bf_set(rrq_oxid, els_rrq, phba->sli4_hba.xri_ids[rrq->xritag]);
9055 bf_set(rrq_rxid, els_rrq, rrq->rxid);
9056 bf_set(rrq_did, els_rrq, vport->fc_myDID);
9057 els_rrq->rrq = cpu_to_be32(els_rrq->rrq);
9058 els_rrq->rrq_exchg = cpu_to_be32(els_rrq->rrq_exchg);
9059
9060
9061 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
9062 "Issue RRQ: did:x%x",
9063 did, rrq->xritag, rrq->rxid);
9064 elsiocb->context_un.rrq = rrq;
9065 elsiocb->cmd_cmpl = lpfc_cmpl_els_rrq;
9066
9067 elsiocb->ndlp = lpfc_nlp_get(ndlp);
9068 if (!elsiocb->ndlp)
9069 goto io_err;
9070
9071 ret = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
9072 if (ret == IOCB_ERROR) {
9073 lpfc_nlp_put(ndlp);
9074 goto io_err;
9075 }
9076 return 0;
9077
9078 io_err:
9079 lpfc_els_free_iocb(phba, elsiocb);
9080 return 1;
9081}
9082
9083/**
9084 * lpfc_send_rrq - Sends ELS RRQ if needed.
9085 * @phba: pointer to lpfc hba data structure.
9086 * @rrq: pointer to the active rrq.
9087 *
9088 * This routine will call the lpfc_issue_els_rrq if the rrq is
9089 * still active for the xri. If this function returns a failure then
9090 * the caller needs to clean up the RRQ by calling lpfc_clr_active_rrq.
9091 *
9092 * Returns 0 Success.
9093 * 1 Failure.
9094 **/
9095int
9096lpfc_send_rrq(struct lpfc_hba *phba, struct lpfc_node_rrq *rrq)
9097{
9098 struct lpfc_nodelist *ndlp = lpfc_findnode_did(rrq->vport,
9099 rrq->nlp_DID);
9100 if (!ndlp)
9101 return 1;
9102
9103 if (lpfc_test_rrq_active(phba, ndlp, rrq->xritag))
9104 return lpfc_issue_els_rrq(rrq->vport, ndlp,
9105 rrq->nlp_DID, rrq);
9106 else
9107 return 1;
9108}
9109
9110/**
9111 * lpfc_els_rsp_rpl_acc - Issue an accept rpl els command
9112 * @vport: pointer to a host virtual N_Port data structure.
9113 * @cmdsize: size of the ELS command.
9114 * @oldiocb: pointer to the original lpfc command iocb data structure.
9115 * @ndlp: pointer to a node-list data structure.
9116 *
9117 * This routine issuees an Accept (ACC) Read Port List (RPL) ELS command.
9118 * It is to be called by the lpfc_els_rcv_rpl() routine to accept the RPL.
9119 *
9120 * Note that the ndlp reference count will be incremented by 1 for holding the
9121 * ndlp and the reference to ndlp will be stored into the ndlp field of
9122 * the IOCB for the completion callback function to the RPL Accept Response
9123 * ELS command.
9124 *
9125 * Return code
9126 * 0 - Successfully issued ACC RPL ELS command
9127 * 1 - Failed to issue ACC RPL ELS command
9128 **/
9129static int
9130lpfc_els_rsp_rpl_acc(struct lpfc_vport *vport, uint16_t cmdsize,
9131 struct lpfc_iocbq *oldiocb, struct lpfc_nodelist *ndlp)
9132{
9133 int rc = 0;
9134 struct lpfc_hba *phba = vport->phba;
9135 IOCB_t *icmd;
9136 union lpfc_wqe128 *wqe;
9137 RPL_RSP rpl_rsp;
9138 struct lpfc_iocbq *elsiocb;
9139 uint8_t *pcmd;
9140 u32 ulp_context;
9141
9142 elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry, ndlp,
9143 ndlp->nlp_DID, ELS_CMD_ACC);
9144
9145 if (!elsiocb)
9146 return 1;
9147
9148 ulp_context = get_job_ulpcontext(phba, elsiocb);
9149 if (phba->sli_rev == LPFC_SLI_REV4) {
9150 wqe = &elsiocb->wqe;
9151 /* Xri / rx_id */
9152 bf_set(wqe_ctxt_tag, &wqe->generic.wqe_com,
9153 get_job_ulpcontext(phba, oldiocb));
9154 bf_set(wqe_rcvoxid, &wqe->xmit_els_rsp.wqe_com,
9155 get_job_rcvoxid(phba, oldiocb));
9156 } else {
9157 icmd = &elsiocb->iocb;
9158 icmd->ulpContext = get_job_ulpcontext(phba, oldiocb);
9159 icmd->unsli3.rcvsli3.ox_id = get_job_rcvoxid(phba, oldiocb);
9160 }
9161
9162 pcmd = elsiocb->cmd_dmabuf->virt;
9163 *((uint32_t *) (pcmd)) = ELS_CMD_ACC;
9164 pcmd += sizeof(uint16_t);
9165 *((uint16_t *)(pcmd)) = be16_to_cpu(cmdsize);
9166 pcmd += sizeof(uint16_t);
9167
9168 /* Setup the RPL ACC payload */
9169 rpl_rsp.listLen = be32_to_cpu(1);
9170 rpl_rsp.index = 0;
9171 rpl_rsp.port_num_blk.portNum = 0;
9172 rpl_rsp.port_num_blk.portID = be32_to_cpu(vport->fc_myDID);
9173 memcpy(&rpl_rsp.port_num_blk.portName, &vport->fc_portname,
9174 sizeof(struct lpfc_name));
9175 memcpy(pcmd, &rpl_rsp, cmdsize - sizeof(uint32_t));
9176 /* Xmit ELS RPL ACC response tag <ulpIoTag> */
9177 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
9178 "0120 Xmit ELS RPL ACC response tag x%x "
9179 "xri x%x, did x%x, nlp_flag x%lx, nlp_state x%x, "
9180 "rpi x%x\n",
9181 elsiocb->iotag, ulp_context,
9182 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
9183 ndlp->nlp_rpi);
9184 elsiocb->cmd_cmpl = lpfc_cmpl_els_rsp;
9185 phba->fc_stat.elsXmitACC++;
9186 elsiocb->ndlp = lpfc_nlp_get(ndlp);
9187 if (!elsiocb->ndlp) {
9188 lpfc_els_free_iocb(phba, elsiocb);
9189 return 1;
9190 }
9191
9192 rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
9193 if (rc == IOCB_ERROR) {
9194 lpfc_els_free_iocb(phba, elsiocb);
9195 lpfc_nlp_put(ndlp);
9196 return 1;
9197 }
9198
9199 return 0;
9200}
9201
9202/**
9203 * lpfc_els_rcv_rpl - Process an unsolicited rpl iocb
9204 * @vport: pointer to a host virtual N_Port data structure.
9205 * @cmdiocb: pointer to lpfc command iocb data structure.
9206 * @ndlp: pointer to a node-list data structure.
9207 *
9208 * This routine processes Read Port List (RPL) IOCB received as an ELS
9209 * unsolicited event. It first checks the remote port state. If the remote
9210 * port is not in NLP_STE_UNMAPPED_NODE and NLP_STE_MAPPED_NODE states, it
9211 * invokes the lpfc_els_rsp_reject() routine to send reject response.
9212 * Otherwise, this routine then invokes the lpfc_els_rsp_rpl_acc() routine
9213 * to accept the RPL.
9214 *
9215 * Return code
9216 * 0 - Successfully processed rpl iocb (currently always return 0)
9217 **/
9218static int
9219lpfc_els_rcv_rpl(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
9220 struct lpfc_nodelist *ndlp)
9221{
9222 struct lpfc_dmabuf *pcmd;
9223 uint32_t *lp;
9224 uint32_t maxsize;
9225 uint16_t cmdsize;
9226 RPL *rpl;
9227 struct ls_rjt stat;
9228
9229 if ((ndlp->nlp_state != NLP_STE_UNMAPPED_NODE) &&
9230 (ndlp->nlp_state != NLP_STE_MAPPED_NODE)) {
9231 /* issue rejection response */
9232 stat.un.b.lsRjtRsvd0 = 0;
9233 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
9234 stat.un.b.lsRjtRsnCodeExp = LSEXP_CANT_GIVE_DATA;
9235 stat.un.b.vendorUnique = 0;
9236 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
9237 NULL);
9238 /* rejected the unsolicited RPL request and done with it */
9239 return 0;
9240 }
9241
9242 pcmd = cmdiocb->cmd_dmabuf;
9243 lp = (uint32_t *) pcmd->virt;
9244 rpl = (RPL *) (lp + 1);
9245 maxsize = be32_to_cpu(rpl->maxsize);
9246
9247 /* We support only one port */
9248 if ((rpl->index == 0) &&
9249 ((maxsize == 0) ||
9250 ((maxsize * sizeof(uint32_t)) >= sizeof(RPL_RSP)))) {
9251 cmdsize = sizeof(uint32_t) + sizeof(RPL_RSP);
9252 } else {
9253 cmdsize = sizeof(uint32_t) + maxsize * sizeof(uint32_t);
9254 }
9255 lpfc_els_rsp_rpl_acc(vport, cmdsize, cmdiocb, ndlp);
9256
9257 return 0;
9258}
9259
9260/**
9261 * lpfc_els_rcv_farp - Process an unsolicited farp request els command
9262 * @vport: pointer to a virtual N_Port data structure.
9263 * @cmdiocb: pointer to lpfc command iocb data structure.
9264 * @ndlp: pointer to a node-list data structure.
9265 *
9266 * This routine processes Fibre Channel Address Resolution Protocol
9267 * (FARP) Request IOCB received as an ELS unsolicited event. Currently,
9268 * the lpfc driver only supports matching on WWPN or WWNN for FARP. As such,
9269 * FARP_MATCH_PORT flag and FARP_MATCH_NODE flag are checked against the
9270 * Match Flag in the FARP request IOCB: if FARP_MATCH_PORT flag is set, the
9271 * remote PortName is compared against the FC PortName stored in the @vport
9272 * data structure; if FARP_MATCH_NODE flag is set, the remote NodeName is
9273 * compared against the FC NodeName stored in the @vport data structure.
9274 * If any of these matches and the FARP_REQUEST_FARPR flag is set in the
9275 * FARP request IOCB Response Flag, the lpfc_issue_els_farpr() routine is
9276 * invoked to send out FARP Response to the remote node. Before sending the
9277 * FARP Response, however, the FARP_REQUEST_PLOGI flag is check in the FARP
9278 * request IOCB Response Flag and, if it is set, the lpfc_issue_els_plogi()
9279 * routine is invoked to log into the remote port first.
9280 *
9281 * Return code
9282 * 0 - Either the FARP Match Mode not supported or successfully processed
9283 **/
9284static int
9285lpfc_els_rcv_farp(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
9286 struct lpfc_nodelist *ndlp)
9287{
9288 struct lpfc_dmabuf *pcmd;
9289 uint32_t *lp;
9290 FARP *fp;
9291 uint32_t cnt, did;
9292
9293 did = get_job_els_rsp64_did(vport->phba, cmdiocb);
9294 pcmd = cmdiocb->cmd_dmabuf;
9295 lp = (uint32_t *) pcmd->virt;
9296
9297 lp++;
9298 fp = (FARP *) lp;
9299 /* FARP-REQ received from DID <did> */
9300 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
9301 "0601 FARP-REQ received from DID x%x\n", did);
9302 /* We will only support match on WWPN or WWNN */
9303 if (fp->Mflags & ~(FARP_MATCH_NODE | FARP_MATCH_PORT)) {
9304 return 0;
9305 }
9306
9307 cnt = 0;
9308 /* If this FARP command is searching for my portname */
9309 if (fp->Mflags & FARP_MATCH_PORT) {
9310 if (memcmp(&fp->RportName, &vport->fc_portname,
9311 sizeof(struct lpfc_name)) == 0)
9312 cnt = 1;
9313 }
9314
9315 /* If this FARP command is searching for my nodename */
9316 if (fp->Mflags & FARP_MATCH_NODE) {
9317 if (memcmp(&fp->RnodeName, &vport->fc_nodename,
9318 sizeof(struct lpfc_name)) == 0)
9319 cnt = 1;
9320 }
9321
9322 if (cnt) {
9323 if ((ndlp->nlp_state == NLP_STE_UNMAPPED_NODE) ||
9324 (ndlp->nlp_state == NLP_STE_MAPPED_NODE)) {
9325 /* Log back into the node before sending the FARP. */
9326 if (fp->Rflags & FARP_REQUEST_PLOGI) {
9327 ndlp->nlp_prev_state = ndlp->nlp_state;
9328 lpfc_nlp_set_state(vport, ndlp,
9329 NLP_STE_PLOGI_ISSUE);
9330 lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
9331 }
9332
9333 /* Send a FARP response to that node */
9334 if (fp->Rflags & FARP_REQUEST_FARPR)
9335 lpfc_issue_els_farpr(vport, did, 0);
9336 }
9337 }
9338 return 0;
9339}
9340
9341/**
9342 * lpfc_els_rcv_farpr - Process an unsolicited farp response iocb
9343 * @vport: pointer to a host virtual N_Port data structure.
9344 * @cmdiocb: pointer to lpfc command iocb data structure.
9345 * @ndlp: pointer to a node-list data structure.
9346 *
9347 * This routine processes Fibre Channel Address Resolution Protocol
9348 * Response (FARPR) IOCB received as an ELS unsolicited event. It simply
9349 * invokes the lpfc_els_rsp_acc() routine to the remote node to accept
9350 * the FARP response request.
9351 *
9352 * Return code
9353 * 0 - Successfully processed FARPR IOCB (currently always return 0)
9354 **/
9355static int
9356lpfc_els_rcv_farpr(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
9357 struct lpfc_nodelist *ndlp)
9358{
9359 uint32_t did;
9360
9361 did = get_job_els_rsp64_did(vport->phba, cmdiocb);
9362
9363 /* FARP-RSP received from DID <did> */
9364 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
9365 "0600 FARP-RSP received from DID x%x\n", did);
9366 /* ACCEPT the Farp resp request */
9367 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
9368
9369 return 0;
9370}
9371
9372/**
9373 * lpfc_els_rcv_fan - Process an unsolicited fan iocb command
9374 * @vport: pointer to a host virtual N_Port data structure.
9375 * @cmdiocb: pointer to lpfc command iocb data structure.
9376 * @fan_ndlp: pointer to a node-list data structure.
9377 *
9378 * This routine processes a Fabric Address Notification (FAN) IOCB
9379 * command received as an ELS unsolicited event. The FAN ELS command will
9380 * only be processed on a physical port (i.e., the @vport represents the
9381 * physical port). The fabric NodeName and PortName from the FAN IOCB are
9382 * compared against those in the phba data structure. If any of those is
9383 * different, the lpfc_initial_flogi() routine is invoked to initialize
9384 * Fabric Login (FLOGI) to the fabric to start the discover over. Otherwise,
9385 * if both of those are identical, the lpfc_issue_fabric_reglogin() routine
9386 * is invoked to register login to the fabric.
9387 *
9388 * Return code
9389 * 0 - Successfully processed fan iocb (currently always return 0).
9390 **/
9391static int
9392lpfc_els_rcv_fan(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
9393 struct lpfc_nodelist *fan_ndlp)
9394{
9395 struct lpfc_hba *phba = vport->phba;
9396 uint32_t *lp;
9397 FAN *fp;
9398
9399 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, "0265 FAN received\n");
9400 lp = (uint32_t *)cmdiocb->cmd_dmabuf->virt;
9401 fp = (FAN *) ++lp;
9402 /* FAN received; Fan does not have a reply sequence */
9403 if ((vport == phba->pport) &&
9404 (vport->port_state == LPFC_LOCAL_CFG_LINK)) {
9405 if ((memcmp(&phba->fc_fabparam.nodeName, &fp->FnodeName,
9406 sizeof(struct lpfc_name))) ||
9407 (memcmp(&phba->fc_fabparam.portName, &fp->FportName,
9408 sizeof(struct lpfc_name)))) {
9409 /* This port has switched fabrics. FLOGI is required */
9410 lpfc_issue_init_vfi(vport);
9411 } else {
9412 /* FAN verified - skip FLOGI */
9413 vport->fc_myDID = vport->fc_prevDID;
9414 if (phba->sli_rev < LPFC_SLI_REV4)
9415 lpfc_issue_fabric_reglogin(vport);
9416 else {
9417 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
9418 "3138 Need register VFI: (x%x/%x)\n",
9419 vport->fc_prevDID, vport->fc_myDID);
9420 lpfc_issue_reg_vfi(vport);
9421 }
9422 }
9423 }
9424 return 0;
9425}
9426
9427/**
9428 * lpfc_els_rcv_edc - Process an unsolicited EDC iocb
9429 * @vport: pointer to a host virtual N_Port data structure.
9430 * @cmdiocb: pointer to lpfc command iocb data structure.
9431 * @ndlp: pointer to a node-list data structure.
9432 *
9433 * Return code
9434 * 0 - Successfully processed echo iocb (currently always return 0)
9435 **/
9436static int
9437lpfc_els_rcv_edc(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
9438 struct lpfc_nodelist *ndlp)
9439{
9440 struct lpfc_hba *phba = vport->phba;
9441 struct fc_els_edc *edc_req;
9442 struct fc_tlv_desc *tlv;
9443 uint8_t *payload;
9444 uint32_t *ptr, dtag;
9445 const char *dtag_nm;
9446 int desc_cnt = 0, bytes_remain;
9447 struct fc_diag_lnkflt_desc *plnkflt;
9448
9449 payload = cmdiocb->cmd_dmabuf->virt;
9450
9451 edc_req = (struct fc_els_edc *)payload;
9452 bytes_remain = be32_to_cpu(edc_req->desc_len);
9453
9454 ptr = (uint32_t *)payload;
9455 lpfc_printf_vlog(vport, KERN_INFO,
9456 LOG_ELS | LOG_CGN_MGMT | LOG_LDS_EVENT,
9457 "3319 Rcv EDC payload len %d: x%x x%x x%x\n",
9458 bytes_remain, be32_to_cpu(*ptr),
9459 be32_to_cpu(*(ptr + 1)), be32_to_cpu(*(ptr + 2)));
9460
9461 /* No signal support unless there is a congestion descriptor */
9462 phba->cgn_reg_signal = EDC_CG_SIG_NOTSUPPORTED;
9463 phba->cgn_sig_freq = 0;
9464 phba->cgn_reg_fpin = LPFC_CGN_FPIN_ALARM | LPFC_CGN_FPIN_WARN;
9465
9466 if (bytes_remain <= 0)
9467 goto out;
9468
9469 tlv = edc_req->desc;
9470
9471 /*
9472 * cycle through EDC diagnostic descriptors to find the
9473 * congestion signaling capability descriptor
9474 */
9475 while (bytes_remain) {
9476 if (bytes_remain < FC_TLV_DESC_HDR_SZ) {
9477 lpfc_printf_log(phba, KERN_WARNING,
9478 LOG_ELS | LOG_CGN_MGMT | LOG_LDS_EVENT,
9479 "6464 Truncated TLV hdr on "
9480 "Diagnostic descriptor[%d]\n",
9481 desc_cnt);
9482 goto out;
9483 }
9484
9485 dtag = be32_to_cpu(tlv->desc_tag);
9486 switch (dtag) {
9487 case ELS_DTAG_LNK_FAULT_CAP:
9488 if (bytes_remain < FC_TLV_DESC_SZ_FROM_LENGTH(tlv) ||
9489 FC_TLV_DESC_SZ_FROM_LENGTH(tlv) !=
9490 sizeof(struct fc_diag_lnkflt_desc)) {
9491 lpfc_printf_log(phba, KERN_WARNING,
9492 LOG_ELS | LOG_CGN_MGMT | LOG_LDS_EVENT,
9493 "6465 Truncated Link Fault Diagnostic "
9494 "descriptor[%d]: %d vs 0x%zx 0x%zx\n",
9495 desc_cnt, bytes_remain,
9496 FC_TLV_DESC_SZ_FROM_LENGTH(tlv),
9497 sizeof(struct fc_diag_lnkflt_desc));
9498 goto out;
9499 }
9500 plnkflt = (struct fc_diag_lnkflt_desc *)tlv;
9501 lpfc_printf_log(phba, KERN_INFO,
9502 LOG_ELS | LOG_LDS_EVENT,
9503 "4626 Link Fault Desc Data: x%08x len x%x "
9504 "da x%x dd x%x interval x%x\n",
9505 be32_to_cpu(plnkflt->desc_tag),
9506 be32_to_cpu(plnkflt->desc_len),
9507 be32_to_cpu(
9508 plnkflt->degrade_activate_threshold),
9509 be32_to_cpu(
9510 plnkflt->degrade_deactivate_threshold),
9511 be32_to_cpu(plnkflt->fec_degrade_interval));
9512 break;
9513 case ELS_DTAG_CG_SIGNAL_CAP:
9514 if (bytes_remain < FC_TLV_DESC_SZ_FROM_LENGTH(tlv) ||
9515 FC_TLV_DESC_SZ_FROM_LENGTH(tlv) !=
9516 sizeof(struct fc_diag_cg_sig_desc)) {
9517 lpfc_printf_log(
9518 phba, KERN_WARNING, LOG_CGN_MGMT,
9519 "6466 Truncated cgn signal Diagnostic "
9520 "descriptor[%d]: %d vs 0x%zx 0x%zx\n",
9521 desc_cnt, bytes_remain,
9522 FC_TLV_DESC_SZ_FROM_LENGTH(tlv),
9523 sizeof(struct fc_diag_cg_sig_desc));
9524 goto out;
9525 }
9526
9527 phba->cgn_reg_fpin = phba->cgn_init_reg_fpin;
9528 phba->cgn_reg_signal = phba->cgn_init_reg_signal;
9529
9530 /* We start negotiation with lpfc_fabric_cgn_frequency.
9531 * When we process the EDC, we will settle on the
9532 * higher frequency.
9533 */
9534 phba->cgn_sig_freq = lpfc_fabric_cgn_frequency;
9535
9536 lpfc_least_capable_settings(
9537 phba, (struct fc_diag_cg_sig_desc *)tlv);
9538 break;
9539 default:
9540 dtag_nm = lpfc_get_tlv_dtag_nm(dtag);
9541 lpfc_printf_log(phba, KERN_WARNING,
9542 LOG_ELS | LOG_CGN_MGMT | LOG_LDS_EVENT,
9543 "6467 unknown Diagnostic "
9544 "Descriptor[%d]: tag x%x (%s)\n",
9545 desc_cnt, dtag, dtag_nm);
9546 }
9547 bytes_remain -= FC_TLV_DESC_SZ_FROM_LENGTH(tlv);
9548 tlv = fc_tlv_next_desc(tlv);
9549 desc_cnt++;
9550 }
9551out:
9552 /* Need to send back an ACC */
9553 lpfc_issue_els_edc_rsp(vport, cmdiocb, ndlp);
9554
9555 lpfc_config_cgn_signal(phba);
9556 return 0;
9557}
9558
9559/**
9560 * lpfc_els_timeout - Handler funciton to the els timer
9561 * @t: timer context used to obtain the vport.
9562 *
9563 * This routine is invoked by the ELS timer after timeout. It posts the ELS
9564 * timer timeout event by setting the WORKER_ELS_TMO bit to the work port
9565 * event bitmap and then invokes the lpfc_worker_wake_up() routine to wake
9566 * up the worker thread. It is for the worker thread to invoke the routine
9567 * lpfc_els_timeout_handler() to work on the posted event WORKER_ELS_TMO.
9568 **/
9569void
9570lpfc_els_timeout(struct timer_list *t)
9571{
9572 struct lpfc_vport *vport = timer_container_of(vport, t, els_tmofunc);
9573 struct lpfc_hba *phba = vport->phba;
9574 uint32_t tmo_posted;
9575 unsigned long iflag;
9576
9577 spin_lock_irqsave(&vport->work_port_lock, iflag);
9578 tmo_posted = vport->work_port_events & WORKER_ELS_TMO;
9579 if (!tmo_posted && !test_bit(FC_UNLOADING, &vport->load_flag))
9580 vport->work_port_events |= WORKER_ELS_TMO;
9581 spin_unlock_irqrestore(&vport->work_port_lock, iflag);
9582
9583 if (!tmo_posted && !test_bit(FC_UNLOADING, &vport->load_flag))
9584 lpfc_worker_wake_up(phba);
9585 return;
9586}
9587
9588
9589/**
9590 * lpfc_els_timeout_handler - Process an els timeout event
9591 * @vport: pointer to a virtual N_Port data structure.
9592 *
9593 * This routine is the actual handler function that processes an ELS timeout
9594 * event. It walks the ELS ring to get and abort all the IOCBs (except the
9595 * ABORT/CLOSE/FARP/FARPR/FDISC), which are associated with the @vport by
9596 * invoking the lpfc_sli_issue_abort_iotag() routine.
9597 **/
9598void
9599lpfc_els_timeout_handler(struct lpfc_vport *vport)
9600{
9601 struct lpfc_hba *phba = vport->phba;
9602 struct lpfc_sli_ring *pring;
9603 struct lpfc_iocbq *tmp_iocb, *piocb;
9604 IOCB_t *cmd = NULL;
9605 struct lpfc_dmabuf *pcmd;
9606 uint32_t els_command = 0;
9607 uint32_t timeout;
9608 uint32_t remote_ID = 0xffffffff;
9609 LIST_HEAD(abort_list);
9610 u32 ulp_command = 0, ulp_context = 0, did = 0, iotag = 0;
9611
9612
9613 timeout = (uint32_t)(phba->fc_ratov << 1);
9614
9615 pring = lpfc_phba_elsring(phba);
9616 if (unlikely(!pring))
9617 return;
9618
9619 if (test_bit(FC_UNLOADING, &phba->pport->load_flag))
9620 return;
9621
9622 spin_lock_irq(&phba->hbalock);
9623 if (phba->sli_rev == LPFC_SLI_REV4)
9624 spin_lock(&pring->ring_lock);
9625
9626 list_for_each_entry_safe(piocb, tmp_iocb, &pring->txcmplq, list) {
9627 ulp_command = get_job_cmnd(phba, piocb);
9628 ulp_context = get_job_ulpcontext(phba, piocb);
9629 did = get_job_els_rsp64_did(phba, piocb);
9630
9631 if (phba->sli_rev == LPFC_SLI_REV4) {
9632 iotag = get_wqe_reqtag(piocb);
9633 } else {
9634 cmd = &piocb->iocb;
9635 iotag = cmd->ulpIoTag;
9636 }
9637
9638 if ((piocb->cmd_flag & LPFC_IO_LIBDFC) != 0 ||
9639 ulp_command == CMD_ABORT_XRI_CX ||
9640 ulp_command == CMD_ABORT_XRI_CN ||
9641 ulp_command == CMD_CLOSE_XRI_CN)
9642 continue;
9643
9644 if (piocb->vport != vport)
9645 continue;
9646
9647 pcmd = piocb->cmd_dmabuf;
9648 if (pcmd)
9649 els_command = *(uint32_t *) (pcmd->virt);
9650
9651 if (els_command == ELS_CMD_FARP ||
9652 els_command == ELS_CMD_FARPR ||
9653 els_command == ELS_CMD_FDISC)
9654 continue;
9655
9656 if (piocb->drvrTimeout > 0) {
9657 if (piocb->drvrTimeout >= timeout)
9658 piocb->drvrTimeout -= timeout;
9659 else
9660 piocb->drvrTimeout = 0;
9661 continue;
9662 }
9663
9664 remote_ID = 0xffffffff;
9665 if (ulp_command != CMD_GEN_REQUEST64_CR) {
9666 remote_ID = did;
9667 } else {
9668 struct lpfc_nodelist *ndlp;
9669 ndlp = __lpfc_findnode_rpi(vport, ulp_context);
9670 if (ndlp)
9671 remote_ID = ndlp->nlp_DID;
9672 }
9673 list_add_tail(&piocb->dlist, &abort_list);
9674 }
9675 if (phba->sli_rev == LPFC_SLI_REV4)
9676 spin_unlock(&pring->ring_lock);
9677 spin_unlock_irq(&phba->hbalock);
9678
9679 list_for_each_entry_safe(piocb, tmp_iocb, &abort_list, dlist) {
9680 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
9681 "0127 ELS timeout Data: x%x x%x x%x "
9682 "x%x\n", els_command,
9683 remote_ID, ulp_command, iotag);
9684
9685 spin_lock_irq(&phba->hbalock);
9686 list_del_init(&piocb->dlist);
9687 lpfc_sli_issue_abort_iotag(phba, pring, piocb, NULL);
9688 spin_unlock_irq(&phba->hbalock);
9689 }
9690
9691 /* Make sure HBA is alive */
9692 lpfc_issue_hb_tmo(phba);
9693
9694 if (!list_empty(&pring->txcmplq))
9695 if (!test_bit(FC_UNLOADING, &phba->pport->load_flag))
9696 mod_timer(&vport->els_tmofunc,
9697 jiffies + secs_to_jiffies(timeout));
9698}
9699
9700/**
9701 * lpfc_els_flush_cmd - Clean up the outstanding els commands to a vport
9702 * @vport: pointer to a host virtual N_Port data structure.
9703 *
9704 * This routine is used to clean up all the outstanding ELS commands on a
9705 * @vport. It first aborts the @vport by invoking lpfc_fabric_abort_vport()
9706 * routine. After that, it walks the ELS transmit queue to remove all the
9707 * IOCBs with the @vport other than the QUE_RING and ABORT/CLOSE IOCBs. For
9708 * the IOCBs with a non-NULL completion callback function, the callback
9709 * function will be invoked with the status set to IOSTAT_LOCAL_REJECT and
9710 * un.ulpWord[4] set to IOERR_SLI_ABORTED. For IOCBs with a NULL completion
9711 * callback function, the IOCB will simply be released. Finally, it walks
9712 * the ELS transmit completion queue to issue an abort IOCB to any transmit
9713 * completion queue IOCB that is associated with the @vport and is not
9714 * an IOCB from libdfc (i.e., the management plane IOCBs that are not
9715 * part of the discovery state machine) out to HBA by invoking the
9716 * lpfc_sli_issue_abort_iotag() routine. Note that this function issues the
9717 * abort IOCB to any transmit completion queueed IOCB, it does not guarantee
9718 * the IOCBs are aborted when this function returns.
9719 **/
9720void
9721lpfc_els_flush_cmd(struct lpfc_vport *vport)
9722{
9723 LIST_HEAD(abort_list);
9724 LIST_HEAD(cancel_list);
9725 struct lpfc_hba *phba = vport->phba;
9726 struct lpfc_sli_ring *pring;
9727 struct lpfc_iocbq *tmp_iocb, *piocb;
9728 u32 ulp_command;
9729 unsigned long iflags = 0;
9730 bool mbx_tmo_err;
9731
9732 lpfc_fabric_abort_vport(vport);
9733
9734 /*
9735 * For SLI3, only the hbalock is required. But SLI4 needs to coordinate
9736 * with the ring insert operation. Because lpfc_sli_issue_abort_iotag
9737 * ultimately grabs the ring_lock, the driver must splice the list into
9738 * a working list and release the locks before calling the abort.
9739 */
9740 spin_lock_irqsave(&phba->hbalock, iflags);
9741 pring = lpfc_phba_elsring(phba);
9742
9743 /* Bail out if we've no ELS wq, like in PCI error recovery case. */
9744 if (unlikely(!pring)) {
9745 spin_unlock_irqrestore(&phba->hbalock, iflags);
9746 return;
9747 }
9748
9749 if (phba->sli_rev == LPFC_SLI_REV4)
9750 spin_lock(&pring->ring_lock);
9751
9752 mbx_tmo_err = test_bit(MBX_TMO_ERR, &phba->bit_flags);
9753 /* First we need to issue aborts to outstanding cmds on txcmpl */
9754 list_for_each_entry_safe(piocb, tmp_iocb, &pring->txcmplq, list) {
9755 if (piocb->vport != vport)
9756 continue;
9757
9758 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
9759 "2243 iotag = 0x%x cmd_flag = 0x%x "
9760 "ulp_command = 0x%x sli_flag = 0x%x\n",
9761 piocb->iotag, piocb->cmd_flag,
9762 get_job_cmnd(phba, piocb),
9763 phba->sli.sli_flag);
9764
9765 if ((phba->sli.sli_flag & LPFC_SLI_ACTIVE) && !mbx_tmo_err) {
9766 if (piocb->cmd_flag & LPFC_IO_LIBDFC)
9767 continue;
9768 if (piocb->cmd_flag & LPFC_DRIVER_ABORTED)
9769 continue;
9770 }
9771
9772 /* On the ELS ring we can have ELS_REQUESTs, ELS_RSPs,
9773 * or GEN_REQUESTs waiting for a CQE response.
9774 */
9775 ulp_command = get_job_cmnd(phba, piocb);
9776 if (ulp_command == CMD_ELS_REQUEST64_WQE ||
9777 ulp_command == CMD_XMIT_ELS_RSP64_WQE) {
9778 list_add_tail(&piocb->dlist, &abort_list);
9779
9780 /* If the link is down when flushing ELS commands
9781 * the firmware will not complete them till after
9782 * the link comes back up. This may confuse
9783 * discovery for the new link up, so we need to
9784 * change the compl routine to just clean up the iocb
9785 * and avoid any retry logic.
9786 */
9787 if (phba->link_state == LPFC_LINK_DOWN)
9788 piocb->cmd_cmpl = lpfc_cmpl_els_link_down;
9789 } else if (ulp_command == CMD_GEN_REQUEST64_CR ||
9790 mbx_tmo_err)
9791 list_add_tail(&piocb->dlist, &abort_list);
9792 }
9793
9794 if (phba->sli_rev == LPFC_SLI_REV4)
9795 spin_unlock(&pring->ring_lock);
9796 spin_unlock_irqrestore(&phba->hbalock, iflags);
9797
9798 /* Abort each txcmpl iocb on aborted list and remove the dlist links. */
9799 list_for_each_entry_safe(piocb, tmp_iocb, &abort_list, dlist) {
9800 spin_lock_irqsave(&phba->hbalock, iflags);
9801 list_del_init(&piocb->dlist);
9802 if (mbx_tmo_err || !(phba->sli.sli_flag & LPFC_SLI_ACTIVE))
9803 list_move_tail(&piocb->list, &cancel_list);
9804 else
9805 lpfc_sli_issue_abort_iotag(phba, pring, piocb, NULL);
9806
9807 spin_unlock_irqrestore(&phba->hbalock, iflags);
9808 }
9809 if (!list_empty(&cancel_list))
9810 lpfc_sli_cancel_iocbs(phba, &cancel_list, IOSTAT_LOCAL_REJECT,
9811 IOERR_SLI_ABORTED);
9812 else
9813 /* Make sure HBA is alive */
9814 lpfc_issue_hb_tmo(phba);
9815
9816 if (!list_empty(&abort_list))
9817 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
9818 "3387 abort list for txq not empty\n");
9819 INIT_LIST_HEAD(&abort_list);
9820
9821 spin_lock_irqsave(&phba->hbalock, iflags);
9822 if (phba->sli_rev == LPFC_SLI_REV4)
9823 spin_lock(&pring->ring_lock);
9824
9825 /* No need to abort the txq list,
9826 * just queue them up for lpfc_sli_cancel_iocbs
9827 */
9828 list_for_each_entry_safe(piocb, tmp_iocb, &pring->txq, list) {
9829 ulp_command = get_job_cmnd(phba, piocb);
9830
9831 if (piocb->cmd_flag & LPFC_IO_LIBDFC)
9832 continue;
9833
9834 /* Do not flush out the QUE_RING and ABORT/CLOSE iocbs */
9835 if (ulp_command == CMD_QUE_RING_BUF_CN ||
9836 ulp_command == CMD_QUE_RING_BUF64_CN ||
9837 ulp_command == CMD_CLOSE_XRI_CN ||
9838 ulp_command == CMD_ABORT_XRI_CN ||
9839 ulp_command == CMD_ABORT_XRI_CX)
9840 continue;
9841
9842 if (piocb->vport != vport)
9843 continue;
9844
9845 list_del_init(&piocb->list);
9846 list_add_tail(&piocb->list, &abort_list);
9847 }
9848
9849 /* The same holds true for any FLOGI/FDISC on the fabric_iocb_list */
9850 if (vport == phba->pport) {
9851 list_for_each_entry_safe(piocb, tmp_iocb,
9852 &phba->fabric_iocb_list, list) {
9853 list_del_init(&piocb->list);
9854 list_add_tail(&piocb->list, &abort_list);
9855 }
9856 }
9857
9858 if (phba->sli_rev == LPFC_SLI_REV4)
9859 spin_unlock(&pring->ring_lock);
9860 spin_unlock_irqrestore(&phba->hbalock, iflags);
9861
9862 /* Cancel all the IOCBs from the completions list */
9863 lpfc_sli_cancel_iocbs(phba, &abort_list,
9864 IOSTAT_LOCAL_REJECT, IOERR_SLI_ABORTED);
9865
9866 return;
9867}
9868
9869/**
9870 * lpfc_els_flush_all_cmd - Clean up all the outstanding els commands to a HBA
9871 * @phba: pointer to lpfc hba data structure.
9872 *
9873 * This routine is used to clean up all the outstanding ELS commands on a
9874 * @phba. It first aborts the @phba by invoking the lpfc_fabric_abort_hba()
9875 * routine. After that, it walks the ELS transmit queue to remove all the
9876 * IOCBs to the @phba other than the QUE_RING and ABORT/CLOSE IOCBs. For
9877 * the IOCBs with the completion callback function associated, the callback
9878 * function will be invoked with the status set to IOSTAT_LOCAL_REJECT and
9879 * un.ulpWord[4] set to IOERR_SLI_ABORTED. For IOCBs without the completion
9880 * callback function associated, the IOCB will simply be released. Finally,
9881 * it walks the ELS transmit completion queue to issue an abort IOCB to any
9882 * transmit completion queue IOCB that is not an IOCB from libdfc (i.e., the
9883 * management plane IOCBs that are not part of the discovery state machine)
9884 * out to HBA by invoking the lpfc_sli_issue_abort_iotag() routine.
9885 **/
9886void
9887lpfc_els_flush_all_cmd(struct lpfc_hba *phba)
9888{
9889 struct lpfc_vport *vport;
9890
9891 spin_lock_irq(&phba->port_list_lock);
9892 list_for_each_entry(vport, &phba->port_list, listentry)
9893 lpfc_els_flush_cmd(vport);
9894 spin_unlock_irq(&phba->port_list_lock);
9895
9896 return;
9897}
9898
9899/**
9900 * lpfc_send_els_failure_event - Posts an ELS command failure event
9901 * @phba: Pointer to hba context object.
9902 * @cmdiocbp: Pointer to command iocb which reported error.
9903 * @rspiocbp: Pointer to response iocb which reported error.
9904 *
9905 * This function sends an event when there is an ELS command
9906 * failure.
9907 **/
9908void
9909lpfc_send_els_failure_event(struct lpfc_hba *phba,
9910 struct lpfc_iocbq *cmdiocbp,
9911 struct lpfc_iocbq *rspiocbp)
9912{
9913 struct lpfc_vport *vport = cmdiocbp->vport;
9914 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
9915 struct lpfc_lsrjt_event lsrjt_event;
9916 struct lpfc_fabric_event_header fabric_event;
9917 struct ls_rjt stat;
9918 struct lpfc_nodelist *ndlp;
9919 uint32_t *pcmd;
9920 u32 ulp_status, ulp_word4;
9921
9922 ndlp = cmdiocbp->ndlp;
9923 if (!ndlp)
9924 return;
9925
9926 ulp_status = get_job_ulpstatus(phba, rspiocbp);
9927 ulp_word4 = get_job_word4(phba, rspiocbp);
9928
9929 if (ulp_status == IOSTAT_LS_RJT) {
9930 lsrjt_event.header.event_type = FC_REG_ELS_EVENT;
9931 lsrjt_event.header.subcategory = LPFC_EVENT_LSRJT_RCV;
9932 memcpy(lsrjt_event.header.wwpn, &ndlp->nlp_portname,
9933 sizeof(struct lpfc_name));
9934 memcpy(lsrjt_event.header.wwnn, &ndlp->nlp_nodename,
9935 sizeof(struct lpfc_name));
9936 pcmd = (uint32_t *)cmdiocbp->cmd_dmabuf->virt;
9937 lsrjt_event.command = (pcmd != NULL) ? *pcmd : 0;
9938 stat.un.ls_rjt_error_be = cpu_to_be32(ulp_word4);
9939 lsrjt_event.reason_code = stat.un.b.lsRjtRsnCode;
9940 lsrjt_event.explanation = stat.un.b.lsRjtRsnCodeExp;
9941 fc_host_post_vendor_event(shost,
9942 fc_get_event_number(),
9943 sizeof(lsrjt_event),
9944 (char *)&lsrjt_event,
9945 LPFC_NL_VENDOR_ID);
9946 return;
9947 }
9948 if (ulp_status == IOSTAT_NPORT_BSY ||
9949 ulp_status == IOSTAT_FABRIC_BSY) {
9950 fabric_event.event_type = FC_REG_FABRIC_EVENT;
9951 if (ulp_status == IOSTAT_NPORT_BSY)
9952 fabric_event.subcategory = LPFC_EVENT_PORT_BUSY;
9953 else
9954 fabric_event.subcategory = LPFC_EVENT_FABRIC_BUSY;
9955 memcpy(fabric_event.wwpn, &ndlp->nlp_portname,
9956 sizeof(struct lpfc_name));
9957 memcpy(fabric_event.wwnn, &ndlp->nlp_nodename,
9958 sizeof(struct lpfc_name));
9959 fc_host_post_vendor_event(shost,
9960 fc_get_event_number(),
9961 sizeof(fabric_event),
9962 (char *)&fabric_event,
9963 LPFC_NL_VENDOR_ID);
9964 return;
9965 }
9966
9967}
9968
9969/**
9970 * lpfc_send_els_event - Posts unsolicited els event
9971 * @vport: Pointer to vport object.
9972 * @ndlp: Pointer FC node object.
9973 * @payload: ELS command code type.
9974 *
9975 * This function posts an event when there is an incoming
9976 * unsolicited ELS command.
9977 **/
9978static void
9979lpfc_send_els_event(struct lpfc_vport *vport,
9980 struct lpfc_nodelist *ndlp,
9981 uint32_t *payload)
9982{
9983 struct lpfc_els_event_header *els_data = NULL;
9984 struct lpfc_logo_event *logo_data = NULL;
9985 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
9986
9987 if (*payload == ELS_CMD_LOGO) {
9988 logo_data = kmalloc_obj(struct lpfc_logo_event);
9989 if (!logo_data) {
9990 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
9991 "0148 Failed to allocate memory "
9992 "for LOGO event\n");
9993 return;
9994 }
9995 els_data = &logo_data->header;
9996 } else {
9997 els_data = kmalloc_obj(struct lpfc_els_event_header);
9998 if (!els_data) {
9999 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
10000 "0149 Failed to allocate memory "
10001 "for ELS event\n");
10002 return;
10003 }
10004 }
10005 els_data->event_type = FC_REG_ELS_EVENT;
10006 switch (*payload) {
10007 case ELS_CMD_PLOGI:
10008 els_data->subcategory = LPFC_EVENT_PLOGI_RCV;
10009 break;
10010 case ELS_CMD_PRLO:
10011 els_data->subcategory = LPFC_EVENT_PRLO_RCV;
10012 break;
10013 case ELS_CMD_ADISC:
10014 els_data->subcategory = LPFC_EVENT_ADISC_RCV;
10015 break;
10016 case ELS_CMD_LOGO:
10017 els_data->subcategory = LPFC_EVENT_LOGO_RCV;
10018 /* Copy the WWPN in the LOGO payload */
10019 memcpy(logo_data->logo_wwpn, &payload[2],
10020 sizeof(struct lpfc_name));
10021 break;
10022 default:
10023 kfree(els_data);
10024 return;
10025 }
10026 memcpy(els_data->wwpn, &ndlp->nlp_portname, sizeof(struct lpfc_name));
10027 memcpy(els_data->wwnn, &ndlp->nlp_nodename, sizeof(struct lpfc_name));
10028 if (*payload == ELS_CMD_LOGO) {
10029 fc_host_post_vendor_event(shost,
10030 fc_get_event_number(),
10031 sizeof(struct lpfc_logo_event),
10032 (char *)logo_data,
10033 LPFC_NL_VENDOR_ID);
10034 kfree(logo_data);
10035 } else {
10036 fc_host_post_vendor_event(shost,
10037 fc_get_event_number(),
10038 sizeof(struct lpfc_els_event_header),
10039 (char *)els_data,
10040 LPFC_NL_VENDOR_ID);
10041 kfree(els_data);
10042 }
10043
10044 return;
10045}
10046
10047
10048DECLARE_ENUM2STR_LOOKUP(lpfc_get_fpin_li_event_nm, fc_fpin_li_event_types,
10049 FC_FPIN_LI_EVT_TYPES_INIT);
10050
10051DECLARE_ENUM2STR_LOOKUP(lpfc_get_fpin_deli_event_nm, fc_fpin_deli_event_types,
10052 FC_FPIN_DELI_EVT_TYPES_INIT);
10053
10054DECLARE_ENUM2STR_LOOKUP(lpfc_get_fpin_congn_event_nm, fc_fpin_congn_event_types,
10055 FC_FPIN_CONGN_EVT_TYPES_INIT);
10056
10057DECLARE_ENUM2STR_LOOKUP(lpfc_get_fpin_congn_severity_nm,
10058 fc_fpin_congn_severity_types,
10059 FC_FPIN_CONGN_SEVERITY_INIT);
10060
10061
10062/**
10063 * lpfc_display_fpin_wwpn - Display WWPNs accessible by the attached port
10064 * @phba: Pointer to phba object.
10065 * @wwnlist: Pointer to list of WWPNs in FPIN payload
10066 * @cnt: count of WWPNs in FPIN payload
10067 *
10068 * This routine is called by LI and PC descriptors.
10069 * Limit the number of WWPNs displayed to 6 log messages, 6 per log message
10070 */
10071static void
10072lpfc_display_fpin_wwpn(struct lpfc_hba *phba, __be64 *wwnlist, u32 cnt)
10073{
10074 char buf[LPFC_FPIN_WWPN_LINE_SZ];
10075 __be64 wwn;
10076 u64 wwpn;
10077 int i, len;
10078 int line = 0;
10079 int wcnt = 0;
10080 bool endit = false;
10081
10082 len = scnprintf(buf, LPFC_FPIN_WWPN_LINE_SZ, "Accessible WWPNs:");
10083 for (i = 0; i < cnt; i++) {
10084 /* Are we on the last WWPN */
10085 if (i == (cnt - 1))
10086 endit = true;
10087
10088 /* Extract the next WWPN from the payload */
10089 wwn = *wwnlist++;
10090 wwpn = be64_to_cpu(wwn);
10091 len += scnprintf(buf + len, LPFC_FPIN_WWPN_LINE_SZ - len,
10092 " %016llx", wwpn);
10093
10094 /* Log a message if we are on the last WWPN
10095 * or if we hit the max allowed per message.
10096 */
10097 wcnt++;
10098 if (wcnt == LPFC_FPIN_WWPN_LINE_CNT || endit) {
10099 buf[len] = 0;
10100 lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
10101 "4686 %s\n", buf);
10102
10103 /* Check if we reached the last WWPN */
10104 if (endit)
10105 return;
10106
10107 /* Limit the number of log message displayed per FPIN */
10108 line++;
10109 if (line == LPFC_FPIN_WWPN_NUM_LINE) {
10110 lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
10111 "4687 %d WWPNs Truncated\n",
10112 cnt - i - 1);
10113 return;
10114 }
10115
10116 /* Start over with next log message */
10117 wcnt = 0;
10118 len = scnprintf(buf, LPFC_FPIN_WWPN_LINE_SZ,
10119 "Additional WWPNs:");
10120 }
10121 }
10122}
10123
10124/**
10125 * lpfc_els_rcv_fpin_li - Process an FPIN Link Integrity Event.
10126 * @phba: Pointer to phba object.
10127 * @tlv: Pointer to the Link Integrity Notification Descriptor.
10128 *
10129 * This function processes a Link Integrity FPIN event by logging a message.
10130 **/
10131static void
10132lpfc_els_rcv_fpin_li(struct lpfc_hba *phba, struct fc_tlv_desc *tlv)
10133{
10134 struct fc_fn_li_desc *li = (struct fc_fn_li_desc *)tlv;
10135 const char *li_evt_str;
10136 u32 li_evt, cnt;
10137
10138 li_evt = be16_to_cpu(li->event_type);
10139 li_evt_str = lpfc_get_fpin_li_event_nm(li_evt);
10140 cnt = be32_to_cpu(li->pname_count);
10141
10142 lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
10143 "4680 FPIN Link Integrity %s (x%x) "
10144 "Detecting PN x%016llx Attached PN x%016llx "
10145 "Duration %d mSecs Count %d Port Cnt %d\n",
10146 li_evt_str, li_evt,
10147 be64_to_cpu(li->detecting_wwpn),
10148 be64_to_cpu(li->attached_wwpn),
10149 be32_to_cpu(li->event_threshold),
10150 be32_to_cpu(li->event_count), cnt);
10151
10152 lpfc_display_fpin_wwpn(phba, (__be64 *)&li->pname_list, cnt);
10153}
10154
10155/**
10156 * lpfc_els_rcv_fpin_del - Process an FPIN Delivery Event.
10157 * @phba: Pointer to hba object.
10158 * @tlv: Pointer to the Delivery Notification Descriptor TLV
10159 *
10160 * This function processes a Delivery FPIN event by logging a message.
10161 **/
10162static void
10163lpfc_els_rcv_fpin_del(struct lpfc_hba *phba, struct fc_tlv_desc *tlv)
10164{
10165 struct fc_fn_deli_desc *del = (struct fc_fn_deli_desc *)tlv;
10166 const char *del_rsn_str;
10167 u32 del_rsn;
10168 __be32 *frame;
10169
10170 del_rsn = be16_to_cpu(del->deli_reason_code);
10171 del_rsn_str = lpfc_get_fpin_deli_event_nm(del_rsn);
10172
10173 /* Skip over desc_tag/desc_len header to payload */
10174 frame = (__be32 *)(del + 1);
10175
10176 lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
10177 "4681 FPIN Delivery %s (x%x) "
10178 "Detecting PN x%016llx Attached PN x%016llx "
10179 "DiscHdr0 x%08x "
10180 "DiscHdr1 x%08x DiscHdr2 x%08x DiscHdr3 x%08x "
10181 "DiscHdr4 x%08x DiscHdr5 x%08x\n",
10182 del_rsn_str, del_rsn,
10183 be64_to_cpu(del->detecting_wwpn),
10184 be64_to_cpu(del->attached_wwpn),
10185 be32_to_cpu(frame[0]),
10186 be32_to_cpu(frame[1]),
10187 be32_to_cpu(frame[2]),
10188 be32_to_cpu(frame[3]),
10189 be32_to_cpu(frame[4]),
10190 be32_to_cpu(frame[5]));
10191}
10192
10193/**
10194 * lpfc_els_rcv_fpin_peer_cgn - Process a FPIN Peer Congestion Event.
10195 * @phba: Pointer to hba object.
10196 * @tlv: Pointer to the Peer Congestion Notification Descriptor TLV
10197 *
10198 * This function processes a Peer Congestion FPIN event by logging a message.
10199 **/
10200static void
10201lpfc_els_rcv_fpin_peer_cgn(struct lpfc_hba *phba, struct fc_tlv_desc *tlv)
10202{
10203 struct fc_fn_peer_congn_desc *pc = (struct fc_fn_peer_congn_desc *)tlv;
10204 const char *pc_evt_str;
10205 u32 pc_evt, cnt;
10206
10207 pc_evt = be16_to_cpu(pc->event_type);
10208 pc_evt_str = lpfc_get_fpin_congn_event_nm(pc_evt);
10209 cnt = be32_to_cpu(pc->pname_count);
10210
10211 /* Capture FPIN frequency */
10212 phba->cgn_fpin_frequency = be32_to_cpu(pc->event_period);
10213
10214 lpfc_printf_log(phba, KERN_INFO, LOG_CGN_MGMT | LOG_ELS,
10215 "4684 FPIN Peer Congestion %s (x%x) "
10216 "Duration %d mSecs "
10217 "Detecting PN x%016llx Attached PN x%016llx "
10218 "Impacted Port Cnt %d\n",
10219 pc_evt_str, pc_evt,
10220 be32_to_cpu(pc->event_period),
10221 be64_to_cpu(pc->detecting_wwpn),
10222 be64_to_cpu(pc->attached_wwpn),
10223 cnt);
10224
10225 lpfc_display_fpin_wwpn(phba, (__be64 *)&pc->pname_list, cnt);
10226}
10227
10228/**
10229 * lpfc_els_rcv_fpin_cgn - Process an FPIN Congestion notification
10230 * @phba: Pointer to hba object.
10231 * @tlv: Pointer to the Congestion Notification Descriptor TLV
10232 *
10233 * This function processes an FPIN Congestion Notifiction. The notification
10234 * could be an Alarm or Warning. This routine feeds that data into driver's
10235 * running congestion algorithm. It also processes the FPIN by
10236 * logging a message. It returns 1 to indicate deliver this message
10237 * to the upper layer or 0 to indicate don't deliver it.
10238 **/
10239static int
10240lpfc_els_rcv_fpin_cgn(struct lpfc_hba *phba, struct fc_tlv_desc *tlv)
10241{
10242 struct lpfc_cgn_info *cp;
10243 struct fc_fn_congn_desc *cgn = (struct fc_fn_congn_desc *)tlv;
10244 const char *cgn_evt_str;
10245 u32 cgn_evt;
10246 const char *cgn_sev_str;
10247 u32 cgn_sev;
10248 uint16_t value;
10249 u32 crc;
10250 bool nm_log = false;
10251 int rc = 1;
10252
10253 cgn_evt = be16_to_cpu(cgn->event_type);
10254 cgn_evt_str = lpfc_get_fpin_congn_event_nm(cgn_evt);
10255 cgn_sev = cgn->severity;
10256 cgn_sev_str = lpfc_get_fpin_congn_severity_nm(cgn_sev);
10257
10258 /* The driver only takes action on a Credit Stall or Oversubscription
10259 * event type to engage the IO algorithm. The driver prints an
10260 * unmaskable message only for Lost Credit and Credit Stall.
10261 * TODO: Still need to have definition of host action on clear,
10262 * lost credit and device specific event types.
10263 */
10264 switch (cgn_evt) {
10265 case FPIN_CONGN_LOST_CREDIT:
10266 nm_log = true;
10267 break;
10268 case FPIN_CONGN_CREDIT_STALL:
10269 nm_log = true;
10270 fallthrough;
10271 case FPIN_CONGN_OVERSUBSCRIPTION:
10272 if (cgn_evt == FPIN_CONGN_OVERSUBSCRIPTION)
10273 nm_log = false;
10274 switch (cgn_sev) {
10275 case FPIN_CONGN_SEVERITY_ERROR:
10276 /* Take action here for an Alarm event */
10277 if (phba->cmf_active_mode != LPFC_CFG_OFF) {
10278 if (phba->cgn_reg_fpin & LPFC_CGN_FPIN_ALARM) {
10279 /* Track of alarm cnt for SYNC_WQE */
10280 atomic_inc(&phba->cgn_sync_alarm_cnt);
10281 }
10282 /* Track alarm cnt for cgn_info regardless
10283 * of whether CMF is configured for Signals
10284 * or FPINs.
10285 */
10286 atomic_inc(&phba->cgn_fabric_alarm_cnt);
10287 goto cleanup;
10288 }
10289 break;
10290 case FPIN_CONGN_SEVERITY_WARNING:
10291 /* Take action here for a Warning event */
10292 if (phba->cmf_active_mode != LPFC_CFG_OFF) {
10293 if (phba->cgn_reg_fpin & LPFC_CGN_FPIN_WARN) {
10294 /* Track of warning cnt for SYNC_WQE */
10295 atomic_inc(&phba->cgn_sync_warn_cnt);
10296 }
10297 /* Track warning cnt and freq for cgn_info
10298 * regardless of whether CMF is configured for
10299 * Signals or FPINs.
10300 */
10301 atomic_inc(&phba->cgn_fabric_warn_cnt);
10302cleanup:
10303 /* Save frequency in ms */
10304 phba->cgn_fpin_frequency =
10305 be32_to_cpu(cgn->event_period);
10306 value = phba->cgn_fpin_frequency;
10307 if (phba->cgn_i) {
10308 cp = (struct lpfc_cgn_info *)
10309 phba->cgn_i->virt;
10310 cp->cgn_alarm_freq =
10311 cpu_to_le16(value);
10312 cp->cgn_warn_freq =
10313 cpu_to_le16(value);
10314 crc = lpfc_cgn_calc_crc32(
10315 cp, LPFC_CGN_INFO_SZ);
10316 cp->cgn_info_crc = cpu_to_le32(crc);
10317 }
10318
10319 /* Don't deliver to upper layer since
10320 * driver took action on this tlv.
10321 */
10322 rc = 0;
10323 }
10324 break;
10325 }
10326 break;
10327 }
10328
10329 /* Change the log level to unmaskable for the following event types. */
10330 lpfc_printf_log(phba, (nm_log ? KERN_WARNING : KERN_INFO),
10331 LOG_CGN_MGMT | LOG_ELS,
10332 "4683 FPIN CONGESTION %s type %s (x%x) Event "
10333 "Duration %d mSecs\n",
10334 cgn_sev_str, cgn_evt_str, cgn_evt,
10335 be32_to_cpu(cgn->event_period));
10336 return rc;
10337}
10338
10339void
10340lpfc_els_rcv_fpin(struct lpfc_vport *vport, void *p, u32 fpin_length)
10341{
10342 struct lpfc_hba *phba = vport->phba;
10343 struct fc_els_fpin *fpin = (struct fc_els_fpin *)p;
10344 struct fc_tlv_desc *tlv, *first_tlv, *current_tlv;
10345 const char *dtag_nm;
10346 int desc_cnt = 0, bytes_remain, cnt;
10347 u32 dtag, deliver = 0;
10348 int len;
10349
10350 /* FPINs handled only if we are in the right discovery state */
10351 if (vport->port_state < LPFC_DISC_AUTH)
10352 return;
10353
10354 /* make sure there is the full fpin header */
10355 if (fpin_length < sizeof(struct fc_els_fpin))
10356 return;
10357
10358 /* Sanity check descriptor length. The desc_len value does not
10359 * include space for the ELS command and the desc_len fields.
10360 */
10361 len = be32_to_cpu(fpin->desc_len);
10362 if (fpin_length < len + sizeof(struct fc_els_fpin)) {
10363 lpfc_printf_log(phba, KERN_WARNING, LOG_CGN_MGMT,
10364 "4671 Bad ELS FPIN length %d: %d\n",
10365 len, fpin_length);
10366 return;
10367 }
10368
10369 tlv = (struct fc_tlv_desc *)&fpin->fpin_desc[0];
10370 first_tlv = tlv;
10371 bytes_remain = fpin_length - offsetof(struct fc_els_fpin, fpin_desc);
10372 bytes_remain = min_t(u32, bytes_remain, be32_to_cpu(fpin->desc_len));
10373
10374 /* process each descriptor separately */
10375 while (bytes_remain >= FC_TLV_DESC_HDR_SZ &&
10376 bytes_remain >= FC_TLV_DESC_SZ_FROM_LENGTH(tlv)) {
10377 dtag = be32_to_cpu(tlv->desc_tag);
10378 switch (dtag) {
10379 case ELS_DTAG_LNK_INTEGRITY:
10380 lpfc_els_rcv_fpin_li(phba, tlv);
10381 deliver = 1;
10382 break;
10383 case ELS_DTAG_DELIVERY:
10384 lpfc_els_rcv_fpin_del(phba, tlv);
10385 deliver = 1;
10386 break;
10387 case ELS_DTAG_PEER_CONGEST:
10388 lpfc_els_rcv_fpin_peer_cgn(phba, tlv);
10389 deliver = 1;
10390 break;
10391 case ELS_DTAG_CONGESTION:
10392 deliver = lpfc_els_rcv_fpin_cgn(phba, tlv);
10393 break;
10394 default:
10395 dtag_nm = lpfc_get_tlv_dtag_nm(dtag);
10396 lpfc_printf_log(phba, KERN_WARNING, LOG_CGN_MGMT,
10397 "4678 unknown FPIN descriptor[%d]: "
10398 "tag x%x (%s)\n",
10399 desc_cnt, dtag, dtag_nm);
10400
10401 /* If descriptor is bad, drop the rest of the data */
10402 return;
10403 }
10404 lpfc_cgn_update_stat(phba, dtag);
10405 cnt = be32_to_cpu(tlv->desc_len);
10406
10407 /* Sanity check descriptor length. The desc_len value does not
10408 * include space for the desc_tag and the desc_len fields.
10409 */
10410 len -= (cnt + sizeof(struct fc_tlv_desc));
10411 if (len < 0) {
10412 dtag_nm = lpfc_get_tlv_dtag_nm(dtag);
10413 lpfc_printf_log(phba, KERN_WARNING, LOG_CGN_MGMT,
10414 "4672 Bad FPIN descriptor TLV length "
10415 "%d: %d %d %s\n",
10416 cnt, len, fpin_length, dtag_nm);
10417 return;
10418 }
10419
10420 current_tlv = tlv;
10421 bytes_remain -= FC_TLV_DESC_SZ_FROM_LENGTH(tlv);
10422 tlv = fc_tlv_next_desc(tlv);
10423
10424 /* Format payload such that the FPIN delivered to the
10425 * upper layer is a single descriptor FPIN.
10426 */
10427 if (desc_cnt)
10428 memcpy(first_tlv, current_tlv,
10429 (cnt + sizeof(struct fc_els_fpin)));
10430
10431 /* Adjust the length so that it only reflects a
10432 * single descriptor FPIN.
10433 */
10434 fpin_length = cnt + sizeof(struct fc_els_fpin);
10435 fpin->desc_len = cpu_to_be32(fpin_length);
10436 fpin_length += sizeof(struct fc_els_fpin); /* the entire FPIN */
10437
10438 /* Send every descriptor individually to the upper layer */
10439 if (deliver)
10440 fc_host_fpin_rcv(lpfc_shost_from_vport(vport),
10441 fpin_length, (char *)fpin, 0);
10442 desc_cnt++;
10443 }
10444}
10445
10446/**
10447 * lpfc_els_unsol_buffer - Process an unsolicited event data buffer
10448 * @phba: pointer to lpfc hba data structure.
10449 * @pring: pointer to a SLI ring.
10450 * @vport: pointer to a host virtual N_Port data structure.
10451 * @elsiocb: pointer to lpfc els command iocb data structure.
10452 *
10453 * This routine is used for processing the IOCB associated with a unsolicited
10454 * event. It first determines whether there is an existing ndlp that matches
10455 * the DID from the unsolicited IOCB. If not, it will create a new one with
10456 * the DID from the unsolicited IOCB. The ELS command from the unsolicited
10457 * IOCB is then used to invoke the proper routine and to set up proper state
10458 * of the discovery state machine.
10459 **/
10460static void
10461lpfc_els_unsol_buffer(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
10462 struct lpfc_vport *vport, struct lpfc_iocbq *elsiocb)
10463{
10464 struct lpfc_nodelist *ndlp;
10465 struct ls_rjt stat;
10466 u32 *payload, payload_len;
10467 u32 cmd = 0, did = 0, newnode, status = 0;
10468 uint8_t rjt_exp, rjt_err = 0, init_link = 0;
10469 struct lpfc_wcqe_complete *wcqe_cmpl = NULL;
10470 LPFC_MBOXQ_t *mbox;
10471
10472 if (!vport || !elsiocb->cmd_dmabuf)
10473 goto dropit;
10474
10475 newnode = 0;
10476 wcqe_cmpl = &elsiocb->wcqe_cmpl;
10477 payload = elsiocb->cmd_dmabuf->virt;
10478 if (phba->sli_rev == LPFC_SLI_REV4)
10479 payload_len = wcqe_cmpl->total_data_placed;
10480 else
10481 payload_len = elsiocb->iocb.unsli3.rcvsli3.acc_len;
10482 status = get_job_ulpstatus(phba, elsiocb);
10483 cmd = *payload;
10484 if ((phba->sli3_options & LPFC_SLI3_HBQ_ENABLED) == 0)
10485 lpfc_sli3_post_buffer(phba, pring, 1);
10486
10487 did = get_job_els_rsp64_did(phba, elsiocb);
10488 if (status) {
10489 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
10490 "RCV Unsol ELS: status:x%x/x%x did:x%x",
10491 status, get_job_word4(phba, elsiocb), did);
10492 goto dropit;
10493 }
10494
10495 /* Check to see if link went down during discovery */
10496 if (lpfc_els_chk_latt(vport))
10497 goto dropit;
10498
10499 /* Ignore traffic received during vport shutdown. */
10500 if (test_bit(FC_UNLOADING, &vport->load_flag))
10501 goto dropit;
10502
10503 /* If NPort discovery is delayed drop incoming ELS */
10504 if (test_bit(FC_DISC_DELAYED, &vport->fc_flag) &&
10505 cmd != ELS_CMD_PLOGI)
10506 goto dropit;
10507
10508 ndlp = lpfc_findnode_did(vport, did);
10509 if (!ndlp) {
10510 /* Cannot find existing Fabric ndlp, so allocate a new one */
10511 ndlp = lpfc_nlp_init(vport, did);
10512 if (!ndlp)
10513 goto dropit;
10514 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
10515 newnode = 1;
10516 if ((did & Fabric_DID_MASK) == Fabric_DID_MASK)
10517 ndlp->nlp_type |= NLP_FABRIC;
10518 } else if (ndlp->nlp_state == NLP_STE_UNUSED_NODE) {
10519 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
10520 newnode = 1;
10521 }
10522
10523 phba->fc_stat.elsRcvFrame++;
10524
10525 /*
10526 * Do not process any unsolicited ELS commands
10527 * if the ndlp is in DEV_LOSS
10528 */
10529 if (test_bit(NLP_IN_DEV_LOSS, &ndlp->nlp_flag))
10530 goto dropit;
10531
10532 elsiocb->ndlp = lpfc_nlp_get(ndlp);
10533 if (!elsiocb->ndlp)
10534 goto dropit;
10535 elsiocb->vport = vport;
10536
10537 if ((cmd & ELS_CMD_MASK) == ELS_CMD_RSCN) {
10538 cmd &= ELS_CMD_MASK;
10539 }
10540 /* ELS command <elsCmd> received from NPORT <did> */
10541 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
10542 "0112 ELS command x%x received from NPORT x%x "
10543 "refcnt %d Data: x%x x%lx x%x x%x\n",
10544 cmd, did, kref_read(&ndlp->kref), vport->port_state,
10545 vport->fc_flag, vport->fc_myDID, vport->fc_prevDID);
10546
10547 /* reject till our FLOGI completes or PLOGI assigned DID via PT2PT */
10548 if ((vport->port_state < LPFC_FABRIC_CFG_LINK) &&
10549 (cmd != ELS_CMD_FLOGI) &&
10550 !((cmd == ELS_CMD_PLOGI) && test_bit(FC_PT2PT, &vport->fc_flag))) {
10551 rjt_err = LSRJT_LOGICAL_BSY;
10552 rjt_exp = LSEXP_NOTHING_MORE;
10553 goto lsrjt;
10554 }
10555
10556 switch (cmd) {
10557 case ELS_CMD_PLOGI:
10558 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
10559 "RCV PLOGI: did:x%x/ste:x%x flg:x%lx",
10560 did, vport->port_state, ndlp->nlp_flag);
10561
10562 phba->fc_stat.elsRcvPLOGI++;
10563 ndlp = lpfc_plogi_confirm_nport(phba, payload, ndlp);
10564 if (phba->sli_rev == LPFC_SLI_REV4 &&
10565 test_bit(FC_PT2PT, &phba->pport->fc_flag)) {
10566 vport->fc_prevDID = vport->fc_myDID;
10567 /* Our DID needs to be updated before registering
10568 * the vfi. This is done in lpfc_rcv_plogi but
10569 * that is called after the reg_vfi.
10570 */
10571 vport->fc_myDID =
10572 bf_get(els_rsp64_sid,
10573 &elsiocb->wqe.xmit_els_rsp);
10574 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
10575 "3312 Remote port assigned DID x%x "
10576 "%x\n", vport->fc_myDID,
10577 vport->fc_prevDID);
10578 }
10579
10580 lpfc_send_els_event(vport, ndlp, payload);
10581
10582 /* If Nport discovery is delayed, reject PLOGIs */
10583 if (test_bit(FC_DISC_DELAYED, &vport->fc_flag)) {
10584 rjt_err = LSRJT_UNABLE_TPC;
10585 rjt_exp = LSEXP_NOTHING_MORE;
10586 break;
10587 }
10588
10589 if (vport->port_state < LPFC_DISC_AUTH) {
10590 if (!test_bit(FC_PT2PT, &phba->pport->fc_flag) ||
10591 test_bit(FC_PT2PT_PLOGI, &phba->pport->fc_flag)) {
10592 rjt_err = LSRJT_UNABLE_TPC;
10593 rjt_exp = LSEXP_NOTHING_MORE;
10594 break;
10595 }
10596 }
10597
10598 lpfc_disc_state_machine(vport, ndlp, elsiocb,
10599 NLP_EVT_RCV_PLOGI);
10600
10601 break;
10602 case ELS_CMD_FLOGI:
10603 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
10604 "RCV FLOGI: did:x%x/ste:x%x flg:x%lx",
10605 did, vport->port_state, ndlp->nlp_flag);
10606
10607 phba->fc_stat.elsRcvFLOGI++;
10608
10609 /* If the driver believes fabric discovery is done and is ready,
10610 * bounce the link. There is some descrepancy.
10611 */
10612 if (vport->port_state >= LPFC_LOCAL_CFG_LINK &&
10613 test_bit(FC_PT2PT, &vport->fc_flag) &&
10614 vport->rcv_flogi_cnt >= 1) {
10615 rjt_err = LSRJT_LOGICAL_BSY;
10616 rjt_exp = LSEXP_NOTHING_MORE;
10617 init_link++;
10618 goto lsrjt;
10619 }
10620
10621 lpfc_els_rcv_flogi(vport, elsiocb, ndlp);
10622 /* retain node if our response is deferred */
10623 if (phba->defer_flogi_acc.flag)
10624 break;
10625 if (newnode)
10626 lpfc_disc_state_machine(vport, ndlp, NULL,
10627 NLP_EVT_DEVICE_RM);
10628 break;
10629 case ELS_CMD_LOGO:
10630 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
10631 "RCV LOGO: did:x%x/ste:x%x flg:x%lx",
10632 did, vport->port_state, ndlp->nlp_flag);
10633
10634 phba->fc_stat.elsRcvLOGO++;
10635 lpfc_send_els_event(vport, ndlp, payload);
10636 if (vport->port_state < LPFC_DISC_AUTH) {
10637 rjt_err = LSRJT_UNABLE_TPC;
10638 rjt_exp = LSEXP_NOTHING_MORE;
10639 break;
10640 }
10641 lpfc_disc_state_machine(vport, ndlp, elsiocb, NLP_EVT_RCV_LOGO);
10642 if (newnode)
10643 lpfc_disc_state_machine(vport, ndlp, NULL,
10644 NLP_EVT_DEVICE_RM);
10645 break;
10646 case ELS_CMD_PRLO:
10647 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
10648 "RCV PRLO: did:x%x/ste:x%x flg:x%lx",
10649 did, vport->port_state, ndlp->nlp_flag);
10650
10651 phba->fc_stat.elsRcvPRLO++;
10652 lpfc_send_els_event(vport, ndlp, payload);
10653 if (vport->port_state < LPFC_DISC_AUTH) {
10654 rjt_err = LSRJT_UNABLE_TPC;
10655 rjt_exp = LSEXP_NOTHING_MORE;
10656 break;
10657 }
10658 lpfc_disc_state_machine(vport, ndlp, elsiocb, NLP_EVT_RCV_PRLO);
10659 break;
10660 case ELS_CMD_LCB:
10661 phba->fc_stat.elsRcvLCB++;
10662 lpfc_els_rcv_lcb(vport, elsiocb, ndlp);
10663 break;
10664 case ELS_CMD_RDP:
10665 phba->fc_stat.elsRcvRDP++;
10666 lpfc_els_rcv_rdp(vport, elsiocb, ndlp);
10667 break;
10668 case ELS_CMD_RSCN:
10669 phba->fc_stat.elsRcvRSCN++;
10670 lpfc_els_rcv_rscn(vport, elsiocb, ndlp);
10671 if (newnode)
10672 lpfc_disc_state_machine(vport, ndlp, NULL,
10673 NLP_EVT_DEVICE_RM);
10674 break;
10675 case ELS_CMD_ADISC:
10676 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
10677 "RCV ADISC: did:x%x/ste:x%x flg:x%lx",
10678 did, vport->port_state, ndlp->nlp_flag);
10679
10680 lpfc_send_els_event(vport, ndlp, payload);
10681 phba->fc_stat.elsRcvADISC++;
10682 if (vport->port_state < LPFC_DISC_AUTH) {
10683 rjt_err = LSRJT_UNABLE_TPC;
10684 rjt_exp = LSEXP_NOTHING_MORE;
10685 break;
10686 }
10687 lpfc_disc_state_machine(vport, ndlp, elsiocb,
10688 NLP_EVT_RCV_ADISC);
10689 break;
10690 case ELS_CMD_PDISC:
10691 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
10692 "RCV PDISC: did:x%x/ste:x%x flg:x%lx",
10693 did, vport->port_state, ndlp->nlp_flag);
10694
10695 phba->fc_stat.elsRcvPDISC++;
10696 if (vport->port_state < LPFC_DISC_AUTH) {
10697 rjt_err = LSRJT_UNABLE_TPC;
10698 rjt_exp = LSEXP_NOTHING_MORE;
10699 break;
10700 }
10701 lpfc_disc_state_machine(vport, ndlp, elsiocb,
10702 NLP_EVT_RCV_PDISC);
10703 break;
10704 case ELS_CMD_FARPR:
10705 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
10706 "RCV FARPR: did:x%x/ste:x%x flg:x%lx",
10707 did, vport->port_state, ndlp->nlp_flag);
10708
10709 phba->fc_stat.elsRcvFARPR++;
10710 lpfc_els_rcv_farpr(vport, elsiocb, ndlp);
10711 break;
10712 case ELS_CMD_FARP:
10713 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
10714 "RCV FARP: did:x%x/ste:x%x flg:x%lx",
10715 did, vport->port_state, ndlp->nlp_flag);
10716
10717 phba->fc_stat.elsRcvFARP++;
10718 lpfc_els_rcv_farp(vport, elsiocb, ndlp);
10719 break;
10720 case ELS_CMD_FAN:
10721 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
10722 "RCV FAN: did:x%x/ste:x%x flg:x%lx",
10723 did, vport->port_state, ndlp->nlp_flag);
10724
10725 phba->fc_stat.elsRcvFAN++;
10726 lpfc_els_rcv_fan(vport, elsiocb, ndlp);
10727 break;
10728 case ELS_CMD_PRLI:
10729 case ELS_CMD_NVMEPRLI:
10730 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
10731 "RCV PRLI: did:x%x/ste:x%x flg:x%lx",
10732 did, vport->port_state, ndlp->nlp_flag);
10733
10734 phba->fc_stat.elsRcvPRLI++;
10735 if ((vport->port_state < LPFC_DISC_AUTH) &&
10736 test_bit(FC_FABRIC, &vport->fc_flag)) {
10737 rjt_err = LSRJT_UNABLE_TPC;
10738 rjt_exp = LSEXP_NOTHING_MORE;
10739 break;
10740 }
10741 lpfc_disc_state_machine(vport, ndlp, elsiocb, NLP_EVT_RCV_PRLI);
10742 break;
10743 case ELS_CMD_LIRR:
10744 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
10745 "RCV LIRR: did:x%x/ste:x%x flg:x%lx",
10746 did, vport->port_state, ndlp->nlp_flag);
10747
10748 phba->fc_stat.elsRcvLIRR++;
10749 lpfc_els_rcv_lirr(vport, elsiocb, ndlp);
10750 if (newnode)
10751 lpfc_disc_state_machine(vport, ndlp, NULL,
10752 NLP_EVT_DEVICE_RM);
10753 break;
10754 case ELS_CMD_RLS:
10755 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
10756 "RCV RLS: did:x%x/ste:x%x flg:x%lx",
10757 did, vport->port_state, ndlp->nlp_flag);
10758
10759 phba->fc_stat.elsRcvRLS++;
10760 lpfc_els_rcv_rls(vport, elsiocb, ndlp);
10761 if (newnode)
10762 lpfc_disc_state_machine(vport, ndlp, NULL,
10763 NLP_EVT_DEVICE_RM);
10764 break;
10765 case ELS_CMD_RPL:
10766 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
10767 "RCV RPL: did:x%x/ste:x%x flg:x%lx",
10768 did, vport->port_state, ndlp->nlp_flag);
10769
10770 phba->fc_stat.elsRcvRPL++;
10771 lpfc_els_rcv_rpl(vport, elsiocb, ndlp);
10772 if (newnode)
10773 lpfc_disc_state_machine(vport, ndlp, NULL,
10774 NLP_EVT_DEVICE_RM);
10775 break;
10776 case ELS_CMD_RNID:
10777 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
10778 "RCV RNID: did:x%x/ste:x%x flg:x%lx",
10779 did, vport->port_state, ndlp->nlp_flag);
10780
10781 phba->fc_stat.elsRcvRNID++;
10782 lpfc_els_rcv_rnid(vport, elsiocb, ndlp);
10783 if (newnode)
10784 lpfc_disc_state_machine(vport, ndlp, NULL,
10785 NLP_EVT_DEVICE_RM);
10786 break;
10787 case ELS_CMD_RTV:
10788 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
10789 "RCV RTV: did:x%x/ste:x%x flg:x%lx",
10790 did, vport->port_state, ndlp->nlp_flag);
10791 phba->fc_stat.elsRcvRTV++;
10792 lpfc_els_rcv_rtv(vport, elsiocb, ndlp);
10793 if (newnode)
10794 lpfc_disc_state_machine(vport, ndlp, NULL,
10795 NLP_EVT_DEVICE_RM);
10796 break;
10797 case ELS_CMD_RRQ:
10798 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
10799 "RCV RRQ: did:x%x/ste:x%x flg:x%lx",
10800 did, vport->port_state, ndlp->nlp_flag);
10801
10802 phba->fc_stat.elsRcvRRQ++;
10803 lpfc_els_rcv_rrq(vport, elsiocb, ndlp);
10804 if (newnode)
10805 lpfc_disc_state_machine(vport, ndlp, NULL,
10806 NLP_EVT_DEVICE_RM);
10807 break;
10808 case ELS_CMD_ECHO:
10809 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
10810 "RCV ECHO: did:x%x/ste:x%x flg:x%lx",
10811 did, vport->port_state, ndlp->nlp_flag);
10812
10813 phba->fc_stat.elsRcvECHO++;
10814 lpfc_els_rcv_echo(vport, elsiocb, ndlp);
10815 if (newnode)
10816 lpfc_disc_state_machine(vport, ndlp, NULL,
10817 NLP_EVT_DEVICE_RM);
10818 break;
10819 case ELS_CMD_REC:
10820 /* receive this due to exchange closed */
10821 rjt_err = LSRJT_UNABLE_TPC;
10822 rjt_exp = LSEXP_INVALID_OX_RX;
10823 break;
10824 case ELS_CMD_FPIN:
10825 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
10826 "RCV FPIN: did:x%x/ste:x%x "
10827 "flg:x%lx",
10828 did, vport->port_state, ndlp->nlp_flag);
10829
10830 lpfc_els_rcv_fpin(vport, (struct fc_els_fpin *)payload,
10831 payload_len);
10832
10833 /* There are no replies, so no rjt codes */
10834 break;
10835 case ELS_CMD_EDC:
10836 lpfc_els_rcv_edc(vport, elsiocb, ndlp);
10837 break;
10838 case ELS_CMD_RDF:
10839 phba->fc_stat.elsRcvRDF++;
10840 /* Accept RDF only from fabric controller */
10841 if (did != Fabric_Cntl_DID) {
10842 lpfc_printf_vlog(vport, KERN_WARNING, LOG_ELS,
10843 "1115 Received RDF from invalid DID "
10844 "x%x\n", did);
10845 rjt_err = LSRJT_PROTOCOL_ERR;
10846 rjt_exp = LSEXP_NOTHING_MORE;
10847 goto lsrjt;
10848 }
10849
10850 lpfc_els_rcv_rdf(vport, elsiocb, ndlp);
10851 break;
10852 default:
10853 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
10854 "RCV ELS cmd: cmd:x%x did:x%x/ste:x%x",
10855 cmd, did, vport->port_state);
10856
10857 /* Unsupported ELS command, reject */
10858 rjt_err = LSRJT_CMD_UNSUPPORTED;
10859 rjt_exp = LSEXP_NOTHING_MORE;
10860
10861 /* Unknown ELS command <elsCmd> received from NPORT <did> */
10862 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
10863 "0115 Unknown ELS command x%x "
10864 "received from NPORT x%x\n", cmd, did);
10865 if (newnode)
10866 lpfc_disc_state_machine(vport, ndlp, NULL,
10867 NLP_EVT_DEVICE_RM);
10868 break;
10869 }
10870
10871lsrjt:
10872 /* check if need to LS_RJT received ELS cmd */
10873 if (rjt_err) {
10874 memset(&stat, 0, sizeof(stat));
10875 stat.un.b.lsRjtRsnCode = rjt_err;
10876 stat.un.b.lsRjtRsnCodeExp = rjt_exp;
10877 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, elsiocb, ndlp,
10878 NULL);
10879 /* Remove the reference from above for new nodes. */
10880 if (newnode)
10881 lpfc_disc_state_machine(vport, ndlp, NULL,
10882 NLP_EVT_DEVICE_RM);
10883 }
10884
10885 /* Release the reference on this elsiocb, not the ndlp. */
10886 lpfc_nlp_put(elsiocb->ndlp);
10887 elsiocb->ndlp = NULL;
10888
10889 /* Special case. Driver received an unsolicited command that
10890 * unsupportable given the driver's current state. Reset the
10891 * link and start over.
10892 */
10893 if (init_link) {
10894 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
10895 if (!mbox)
10896 return;
10897 lpfc_linkdown(phba);
10898 lpfc_init_link(phba, mbox,
10899 phba->cfg_topology,
10900 phba->cfg_link_speed);
10901 mbox->u.mb.un.varInitLnk.lipsr_AL_PA = 0;
10902 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
10903 mbox->vport = vport;
10904 if (lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT) ==
10905 MBX_NOT_FINISHED)
10906 mempool_free(mbox, phba->mbox_mem_pool);
10907 }
10908
10909 return;
10910
10911dropit:
10912 if (vport && !test_bit(FC_UNLOADING, &vport->load_flag))
10913 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
10914 "0111 Dropping received ELS cmd "
10915 "Data: x%x x%x x%x x%x\n",
10916 cmd, status, get_job_word4(phba, elsiocb), did);
10917
10918 phba->fc_stat.elsRcvDrop++;
10919}
10920
10921/**
10922 * lpfc_els_unsol_event - Process an unsolicited event from an els sli ring
10923 * @phba: pointer to lpfc hba data structure.
10924 * @pring: pointer to a SLI ring.
10925 * @elsiocb: pointer to lpfc els iocb data structure.
10926 *
10927 * This routine is used to process an unsolicited event received from a SLI
10928 * (Service Level Interface) ring. The actual processing of the data buffer
10929 * associated with the unsolicited event is done by invoking the routine
10930 * lpfc_els_unsol_buffer() after properly set up the iocb buffer from the
10931 * SLI ring on which the unsolicited event was received.
10932 **/
10933void
10934lpfc_els_unsol_event(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
10935 struct lpfc_iocbq *elsiocb)
10936{
10937 struct lpfc_vport *vport = elsiocb->vport;
10938 u32 ulp_command, status, parameter, bde_count = 0;
10939 IOCB_t *icmd;
10940 struct lpfc_wcqe_complete *wcqe_cmpl = NULL;
10941 struct lpfc_dmabuf *bdeBuf1 = elsiocb->cmd_dmabuf;
10942 struct lpfc_dmabuf *bdeBuf2 = elsiocb->bpl_dmabuf;
10943 dma_addr_t paddr;
10944
10945 elsiocb->cmd_dmabuf = NULL;
10946 elsiocb->rsp_dmabuf = NULL;
10947 elsiocb->bpl_dmabuf = NULL;
10948
10949 wcqe_cmpl = &elsiocb->wcqe_cmpl;
10950 ulp_command = get_job_cmnd(phba, elsiocb);
10951 status = get_job_ulpstatus(phba, elsiocb);
10952 parameter = get_job_word4(phba, elsiocb);
10953 if (phba->sli_rev == LPFC_SLI_REV4)
10954 bde_count = wcqe_cmpl->word3;
10955 else
10956 bde_count = elsiocb->iocb.ulpBdeCount;
10957
10958 if (status == IOSTAT_NEED_BUFFER) {
10959 lpfc_sli_hbqbuf_add_hbqs(phba, LPFC_ELS_HBQ);
10960 } else if (status == IOSTAT_LOCAL_REJECT &&
10961 (parameter & IOERR_PARAM_MASK) ==
10962 IOERR_RCV_BUFFER_WAITING) {
10963 phba->fc_stat.NoRcvBuf++;
10964 /* Not enough posted buffers; Try posting more buffers */
10965 if (!(phba->sli3_options & LPFC_SLI3_HBQ_ENABLED))
10966 lpfc_sli3_post_buffer(phba, pring, 0);
10967 return;
10968 }
10969
10970 if (phba->sli_rev == LPFC_SLI_REV3) {
10971 icmd = &elsiocb->iocb;
10972 if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
10973 (ulp_command == CMD_IOCB_RCV_ELS64_CX ||
10974 ulp_command == CMD_IOCB_RCV_SEQ64_CX)) {
10975 if (icmd->unsli3.rcvsli3.vpi == 0xffff)
10976 vport = phba->pport;
10977 else
10978 vport = lpfc_find_vport_by_vpid(phba,
10979 icmd->unsli3.rcvsli3.vpi);
10980 }
10981 }
10982
10983 /* If there are no BDEs associated
10984 * with this IOCB, there is nothing to do.
10985 */
10986 if (bde_count == 0)
10987 return;
10988
10989 /* Account for SLI2 or SLI3 and later unsolicited buffering */
10990 if (phba->sli3_options & LPFC_SLI3_HBQ_ENABLED) {
10991 elsiocb->cmd_dmabuf = bdeBuf1;
10992 if (bde_count == 2)
10993 elsiocb->bpl_dmabuf = bdeBuf2;
10994 } else {
10995 icmd = &elsiocb->iocb;
10996 paddr = getPaddr(icmd->un.cont64[0].addrHigh,
10997 icmd->un.cont64[0].addrLow);
10998 elsiocb->cmd_dmabuf = lpfc_sli_ringpostbuf_get(phba, pring,
10999 paddr);
11000 if (bde_count == 2) {
11001 paddr = getPaddr(icmd->un.cont64[1].addrHigh,
11002 icmd->un.cont64[1].addrLow);
11003 elsiocb->bpl_dmabuf = lpfc_sli_ringpostbuf_get(phba,
11004 pring,
11005 paddr);
11006 }
11007 }
11008
11009 lpfc_els_unsol_buffer(phba, pring, vport, elsiocb);
11010 /*
11011 * The different unsolicited event handlers would tell us
11012 * if they are done with "mp" by setting cmd_dmabuf/bpl_dmabuf to NULL.
11013 */
11014 if (elsiocb->cmd_dmabuf) {
11015 lpfc_in_buf_free(phba, elsiocb->cmd_dmabuf);
11016 elsiocb->cmd_dmabuf = NULL;
11017 }
11018
11019 if (elsiocb->bpl_dmabuf) {
11020 lpfc_in_buf_free(phba, elsiocb->bpl_dmabuf);
11021 elsiocb->bpl_dmabuf = NULL;
11022 }
11023
11024}
11025
11026static void
11027lpfc_start_fdmi(struct lpfc_vport *vport)
11028{
11029 struct lpfc_nodelist *ndlp;
11030
11031 /* If this is the first time, allocate an ndlp and initialize
11032 * it. Otherwise, make sure the node is enabled and then do the
11033 * login.
11034 */
11035 ndlp = lpfc_findnode_did(vport, FDMI_DID);
11036 if (!ndlp) {
11037 ndlp = lpfc_nlp_init(vport, FDMI_DID);
11038 if (ndlp) {
11039 ndlp->nlp_type |= NLP_FABRIC;
11040 } else {
11041 return;
11042 }
11043 }
11044
11045 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
11046 lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
11047}
11048
11049/**
11050 * lpfc_do_scr_ns_plogi - Issue a plogi to the name server for scr
11051 * @phba: pointer to lpfc hba data structure.
11052 * @vport: pointer to a virtual N_Port data structure.
11053 *
11054 * This routine issues a Port Login (PLOGI) to the Name Server with
11055 * State Change Request (SCR) for a @vport. This routine will create an
11056 * ndlp for the Name Server associated to the @vport if such node does
11057 * not already exist. The PLOGI to Name Server is issued by invoking the
11058 * lpfc_issue_els_plogi() routine. If Fabric-Device Management Interface
11059 * (FDMI) is configured to the @vport, a FDMI node will be created and
11060 * the PLOGI to FDMI is issued by invoking lpfc_issue_els_plogi() routine.
11061 **/
11062void
11063lpfc_do_scr_ns_plogi(struct lpfc_hba *phba, struct lpfc_vport *vport)
11064{
11065 struct lpfc_nodelist *ndlp;
11066
11067 /*
11068 * If lpfc_delay_discovery parameter is set and the clean address
11069 * bit is cleared and fc fabric parameters chenged, delay FC NPort
11070 * discovery.
11071 */
11072 if (test_bit(FC_DISC_DELAYED, &vport->fc_flag)) {
11073 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
11074 "3334 Delay fc port discovery for %d secs\n",
11075 phba->fc_ratov);
11076 mod_timer(&vport->delayed_disc_tmo,
11077 jiffies + secs_to_jiffies(phba->fc_ratov));
11078 return;
11079 }
11080
11081 ndlp = lpfc_findnode_did(vport, NameServer_DID);
11082 if (!ndlp) {
11083 ndlp = lpfc_nlp_init(vport, NameServer_DID);
11084 if (!ndlp) {
11085 if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
11086 lpfc_disc_start(vport);
11087 return;
11088 }
11089 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
11090 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
11091 "0251 NameServer login: no memory\n");
11092 return;
11093 }
11094 }
11095
11096 ndlp->nlp_type |= NLP_FABRIC;
11097
11098 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
11099
11100 if (lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0)) {
11101 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
11102 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
11103 "0252 Cannot issue NameServer login\n");
11104 return;
11105 }
11106
11107 if ((phba->cfg_enable_SmartSAN ||
11108 phba->cfg_fdmi_on == LPFC_FDMI_SUPPORT) &&
11109 test_bit(FC_ALLOW_FDMI, &vport->load_flag))
11110 lpfc_start_fdmi(vport);
11111}
11112
11113/**
11114 * lpfc_cmpl_reg_new_vport - Completion callback function to register new vport
11115 * @phba: pointer to lpfc hba data structure.
11116 * @pmb: pointer to the driver internal queue element for mailbox command.
11117 *
11118 * This routine is the completion callback function to register new vport
11119 * mailbox command. If the new vport mailbox command completes successfully,
11120 * the fabric registration login shall be performed on physical port (the
11121 * new vport created is actually a physical port, with VPI 0) or the port
11122 * login to Name Server for State Change Request (SCR) will be performed
11123 * on virtual port (real virtual port, with VPI greater than 0).
11124 **/
11125static void
11126lpfc_cmpl_reg_new_vport(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
11127{
11128 struct lpfc_vport *vport = pmb->vport;
11129 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
11130 struct lpfc_nodelist *ndlp = pmb->ctx_ndlp;
11131 MAILBOX_t *mb = &pmb->u.mb;
11132 int rc;
11133
11134 clear_bit(FC_VPORT_NEEDS_REG_VPI, &vport->fc_flag);
11135
11136 if (mb->mbxStatus) {
11137 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
11138 "0915 Register VPI failed : Status: x%x"
11139 " upd bit: x%x \n", mb->mbxStatus,
11140 mb->un.varRegVpi.upd);
11141 if (phba->sli_rev == LPFC_SLI_REV4 &&
11142 mb->un.varRegVpi.upd)
11143 goto mbox_err_exit ;
11144
11145 switch (mb->mbxStatus) {
11146 case 0x11: /* unsupported feature */
11147 case 0x9603: /* max_vpi exceeded */
11148 case 0x9602: /* Link event since CLEAR_LA */
11149 /* giving up on vport registration */
11150 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
11151 clear_bit(FC_FABRIC, &vport->fc_flag);
11152 clear_bit(FC_PUBLIC_LOOP, &vport->fc_flag);
11153 lpfc_can_disctmo(vport);
11154 break;
11155 /* If reg_vpi fail with invalid VPI status, re-init VPI */
11156 case 0x20:
11157 set_bit(FC_VPORT_NEEDS_REG_VPI, &vport->fc_flag);
11158 lpfc_init_vpi(phba, pmb, vport->vpi);
11159 pmb->vport = vport;
11160 pmb->mbox_cmpl = lpfc_init_vpi_cmpl;
11161 rc = lpfc_sli_issue_mbox(phba, pmb,
11162 MBX_NOWAIT);
11163 if (rc == MBX_NOT_FINISHED) {
11164 lpfc_printf_vlog(vport, KERN_ERR,
11165 LOG_TRACE_EVENT,
11166 "2732 Failed to issue INIT_VPI"
11167 " mailbox command\n");
11168 } else {
11169 lpfc_nlp_put(ndlp);
11170 return;
11171 }
11172 fallthrough;
11173 default:
11174 /* Try to recover from this error */
11175 if (phba->sli_rev == LPFC_SLI_REV4)
11176 lpfc_sli4_unreg_all_rpis(vport);
11177 lpfc_mbx_unreg_vpi(vport);
11178 set_bit(FC_VPORT_NEEDS_REG_VPI, &vport->fc_flag);
11179 if (mb->mbxStatus == MBX_NOT_FINISHED)
11180 break;
11181 if ((vport->port_type == LPFC_PHYSICAL_PORT) &&
11182 !test_bit(FC_LOGO_RCVD_DID_CHNG, &vport->fc_flag)) {
11183 if (phba->sli_rev == LPFC_SLI_REV4)
11184 lpfc_issue_init_vfi(vport);
11185 else
11186 lpfc_initial_flogi(vport);
11187 } else {
11188 lpfc_initial_fdisc(vport);
11189 }
11190 break;
11191 }
11192 } else {
11193 spin_lock_irq(shost->host_lock);
11194 vport->vpi_state |= LPFC_VPI_REGISTERED;
11195 spin_unlock_irq(shost->host_lock);
11196 if (vport == phba->pport) {
11197 if (phba->sli_rev < LPFC_SLI_REV4)
11198 lpfc_issue_fabric_reglogin(vport);
11199 else {
11200 /*
11201 * If the physical port is instantiated using
11202 * FDISC, do not start vport discovery.
11203 */
11204 if (vport->port_state != LPFC_FDISC)
11205 lpfc_start_fdiscs(phba);
11206 lpfc_do_scr_ns_plogi(phba, vport);
11207 }
11208 } else {
11209 lpfc_do_scr_ns_plogi(phba, vport);
11210 }
11211 }
11212mbox_err_exit:
11213 /* Now, we decrement the ndlp reference count held for this
11214 * callback function
11215 */
11216 lpfc_nlp_put(ndlp);
11217
11218 mempool_free(pmb, phba->mbox_mem_pool);
11219
11220 /* reinitialize the VMID datastructure before returning.
11221 * this is specifically for vport
11222 */
11223 if (lpfc_is_vmid_enabled(phba))
11224 lpfc_reinit_vmid(vport);
11225 vport->vmid_flag = vport->phba->pport->vmid_flag;
11226
11227 return;
11228}
11229
11230/**
11231 * lpfc_register_new_vport - Register a new vport with a HBA
11232 * @phba: pointer to lpfc hba data structure.
11233 * @vport: pointer to a host virtual N_Port data structure.
11234 * @ndlp: pointer to a node-list data structure.
11235 *
11236 * This routine registers the @vport as a new virtual port with a HBA.
11237 * It is done through a registering vpi mailbox command.
11238 **/
11239void
11240lpfc_register_new_vport(struct lpfc_hba *phba, struct lpfc_vport *vport,
11241 struct lpfc_nodelist *ndlp)
11242{
11243 LPFC_MBOXQ_t *mbox;
11244
11245 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
11246 if (mbox) {
11247 lpfc_reg_vpi(vport, mbox);
11248 mbox->vport = vport;
11249 mbox->ctx_ndlp = lpfc_nlp_get(ndlp);
11250 if (!mbox->ctx_ndlp) {
11251 mempool_free(mbox, phba->mbox_mem_pool);
11252 goto mbox_err_exit;
11253 }
11254
11255 mbox->mbox_cmpl = lpfc_cmpl_reg_new_vport;
11256 if (lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT)
11257 == MBX_NOT_FINISHED) {
11258 /* mailbox command not success, decrement ndlp
11259 * reference count for this command
11260 */
11261 lpfc_nlp_put(ndlp);
11262 mempool_free(mbox, phba->mbox_mem_pool);
11263
11264 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
11265 "0253 Register VPI: Can't send mbox\n");
11266 goto mbox_err_exit;
11267 }
11268 } else {
11269 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
11270 "0254 Register VPI: no memory\n");
11271 goto mbox_err_exit;
11272 }
11273 return;
11274
11275mbox_err_exit:
11276 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
11277 clear_bit(FC_VPORT_NEEDS_REG_VPI, &vport->fc_flag);
11278 return;
11279}
11280
11281/**
11282 * lpfc_cancel_all_vport_retry_delay_timer - Cancel all vport retry delay timer
11283 * @phba: pointer to lpfc hba data structure.
11284 *
11285 * This routine cancels the retry delay timers to all the vports.
11286 **/
11287void
11288lpfc_cancel_all_vport_retry_delay_timer(struct lpfc_hba *phba)
11289{
11290 struct lpfc_vport **vports;
11291 struct lpfc_nodelist *ndlp;
11292 uint32_t link_state;
11293 int i;
11294
11295 /* Treat this failure as linkdown for all vports */
11296 link_state = phba->link_state;
11297 lpfc_linkdown(phba);
11298 phba->link_state = link_state;
11299
11300 vports = lpfc_create_vport_work_array(phba);
11301
11302 if (vports) {
11303 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
11304 ndlp = lpfc_findnode_did(vports[i], Fabric_DID);
11305 if (ndlp)
11306 lpfc_cancel_retry_delay_tmo(vports[i], ndlp);
11307 lpfc_els_flush_cmd(vports[i]);
11308 }
11309 lpfc_destroy_vport_work_array(phba, vports);
11310 }
11311}
11312
11313/**
11314 * lpfc_retry_pport_discovery - Start timer to retry FLOGI.
11315 * @phba: pointer to lpfc hba data structure.
11316 *
11317 * This routine abort all pending discovery commands and
11318 * start a timer to retry FLOGI for the physical port
11319 * discovery.
11320 **/
11321void
11322lpfc_retry_pport_discovery(struct lpfc_hba *phba)
11323{
11324 struct lpfc_nodelist *ndlp;
11325
11326 /* Cancel the all vports retry delay retry timers */
11327 lpfc_cancel_all_vport_retry_delay_timer(phba);
11328
11329 /* If fabric require FLOGI, then re-instantiate physical login */
11330 ndlp = lpfc_findnode_did(phba->pport, Fabric_DID);
11331 if (!ndlp)
11332 return;
11333
11334 mod_timer(&ndlp->nlp_delayfunc, jiffies + secs_to_jiffies(1));
11335 set_bit(NLP_DELAY_TMO, &ndlp->nlp_flag);
11336 ndlp->nlp_last_elscmd = ELS_CMD_FLOGI;
11337 phba->pport->port_state = LPFC_FLOGI;
11338 return;
11339}
11340
11341/**
11342 * lpfc_fabric_login_reqd - Check if FLOGI required.
11343 * @phba: pointer to lpfc hba data structure.
11344 * @cmdiocb: pointer to FDISC command iocb.
11345 * @rspiocb: pointer to FDISC response iocb.
11346 *
11347 * This routine checks if a FLOGI is reguired for FDISC
11348 * to succeed.
11349 **/
11350static int
11351lpfc_fabric_login_reqd(struct lpfc_hba *phba,
11352 struct lpfc_iocbq *cmdiocb,
11353 struct lpfc_iocbq *rspiocb)
11354{
11355 u32 ulp_status = get_job_ulpstatus(phba, rspiocb);
11356 u32 ulp_word4 = get_job_word4(phba, rspiocb);
11357
11358 if (ulp_status != IOSTAT_FABRIC_RJT ||
11359 ulp_word4 != RJT_LOGIN_REQUIRED)
11360 return 0;
11361 else
11362 return 1;
11363}
11364
11365/**
11366 * lpfc_cmpl_els_fdisc - Completion function for fdisc iocb command
11367 * @phba: pointer to lpfc hba data structure.
11368 * @cmdiocb: pointer to lpfc command iocb data structure.
11369 * @rspiocb: pointer to lpfc response iocb data structure.
11370 *
11371 * This routine is the completion callback function to a Fabric Discover
11372 * (FDISC) ELS command. Since all the FDISC ELS commands are issued
11373 * single threaded, each FDISC completion callback function will reset
11374 * the discovery timer for all vports such that the timers will not get
11375 * unnecessary timeout. The function checks the FDISC IOCB status. If error
11376 * detected, the vport will be set to FC_VPORT_FAILED state. Otherwise,the
11377 * vport will set to FC_VPORT_ACTIVE state. It then checks whether the DID
11378 * assigned to the vport has been changed with the completion of the FDISC
11379 * command. If so, both RPI (Remote Port Index) and VPI (Virtual Port Index)
11380 * are unregistered from the HBA, and then the lpfc_register_new_vport()
11381 * routine is invoked to register new vport with the HBA. Otherwise, the
11382 * lpfc_do_scr_ns_plogi() routine is invoked to issue a PLOGI to the Name
11383 * Server for State Change Request (SCR).
11384 **/
11385static void
11386lpfc_cmpl_els_fdisc(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
11387 struct lpfc_iocbq *rspiocb)
11388{
11389 struct lpfc_vport *vport = cmdiocb->vport;
11390 struct lpfc_nodelist *ndlp = cmdiocb->ndlp;
11391 struct lpfc_nodelist *np;
11392 struct lpfc_nodelist *next_np;
11393 struct lpfc_iocbq *piocb;
11394 struct lpfc_dmabuf *pcmd = cmdiocb->cmd_dmabuf, *prsp;
11395 struct serv_parm *sp;
11396 uint8_t fabric_param_changed;
11397 u32 ulp_status, ulp_word4;
11398
11399 ulp_status = get_job_ulpstatus(phba, rspiocb);
11400 ulp_word4 = get_job_word4(phba, rspiocb);
11401
11402 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
11403 "0123 FDISC completes. x%x/x%x prevDID: x%x\n",
11404 ulp_status, ulp_word4,
11405 vport->fc_prevDID);
11406 /* Since all FDISCs are being single threaded, we
11407 * must reset the discovery timer for ALL vports
11408 * waiting to send FDISC when one completes.
11409 */
11410 list_for_each_entry(piocb, &phba->fabric_iocb_list, list) {
11411 lpfc_set_disctmo(piocb->vport);
11412 }
11413
11414 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
11415 "FDISC cmpl: status:x%x/x%x prevdid:x%x",
11416 ulp_status, ulp_word4, vport->fc_prevDID);
11417
11418 if (ulp_status) {
11419
11420 if (lpfc_fabric_login_reqd(phba, cmdiocb, rspiocb)) {
11421 lpfc_retry_pport_discovery(phba);
11422 goto out;
11423 }
11424
11425 /* Check for retry */
11426 if (lpfc_els_retry(phba, cmdiocb, rspiocb))
11427 goto out;
11428 /* Warn FDISC status */
11429 lpfc_vlog_msg(vport, KERN_WARNING, LOG_ELS,
11430 "0126 FDISC cmpl status: x%x/x%x)\n",
11431 ulp_status, ulp_word4);
11432
11433 /* drop initial reference */
11434 if (!test_and_set_bit(NLP_DROPPED, &ndlp->nlp_flag))
11435 lpfc_nlp_put(ndlp);
11436
11437 goto fdisc_failed;
11438 }
11439
11440 lpfc_check_nlp_post_devloss(vport, ndlp);
11441
11442 clear_bit(FC_VPORT_CVL_RCVD, &vport->fc_flag);
11443 clear_bit(FC_VPORT_LOGO_RCVD, &vport->fc_flag);
11444 set_bit(FC_FABRIC, &vport->fc_flag);
11445 if (vport->phba->fc_topology == LPFC_TOPOLOGY_LOOP)
11446 set_bit(FC_PUBLIC_LOOP, &vport->fc_flag);
11447
11448 vport->fc_myDID = ulp_word4 & Mask_DID;
11449 lpfc_vport_set_state(vport, FC_VPORT_ACTIVE);
11450 prsp = list_get_first(&pcmd->list, struct lpfc_dmabuf, list);
11451 if (!prsp)
11452 goto out;
11453 if (!lpfc_is_els_acc_rsp(prsp))
11454 goto out;
11455
11456 sp = prsp->virt + sizeof(uint32_t);
11457 fabric_param_changed = lpfc_check_clean_addr_bit(vport, sp);
11458 memcpy(&vport->fabric_portname, &sp->portName,
11459 sizeof(struct lpfc_name));
11460 memcpy(&vport->fabric_nodename, &sp->nodeName,
11461 sizeof(struct lpfc_name));
11462 if (fabric_param_changed &&
11463 !test_bit(FC_VPORT_NEEDS_REG_VPI, &vport->fc_flag)) {
11464 /* If our NportID changed, we need to ensure all
11465 * remaining NPORTs get unreg_login'ed so we can
11466 * issue unreg_vpi.
11467 */
11468 list_for_each_entry_safe(np, next_np,
11469 &vport->fc_nodes, nlp_listp) {
11470 if ((np->nlp_state != NLP_STE_NPR_NODE) ||
11471 !test_bit(NLP_NPR_ADISC, &np->nlp_flag))
11472 continue;
11473 clear_bit(NLP_NPR_ADISC, &np->nlp_flag);
11474 lpfc_unreg_rpi(vport, np);
11475 }
11476 lpfc_cleanup_pending_mbox(vport);
11477
11478 if (phba->sli_rev == LPFC_SLI_REV4)
11479 lpfc_sli4_unreg_all_rpis(vport);
11480
11481 lpfc_mbx_unreg_vpi(vport);
11482 set_bit(FC_VPORT_NEEDS_REG_VPI, &vport->fc_flag);
11483 if (phba->sli_rev == LPFC_SLI_REV4)
11484 set_bit(FC_VPORT_NEEDS_INIT_VPI, &vport->fc_flag);
11485 else
11486 set_bit(FC_LOGO_RCVD_DID_CHNG, &vport->fc_flag);
11487 } else if ((phba->sli_rev == LPFC_SLI_REV4) &&
11488 !test_bit(FC_VPORT_NEEDS_REG_VPI, &vport->fc_flag)) {
11489 /*
11490 * Driver needs to re-reg VPI in order for f/w
11491 * to update the MAC address.
11492 */
11493 lpfc_register_new_vport(phba, vport, ndlp);
11494 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
11495 goto out;
11496 }
11497
11498 if (test_bit(FC_VPORT_NEEDS_INIT_VPI, &vport->fc_flag))
11499 lpfc_issue_init_vpi(vport);
11500 else if (test_bit(FC_VPORT_NEEDS_REG_VPI, &vport->fc_flag))
11501 lpfc_register_new_vport(phba, vport, ndlp);
11502 else
11503 lpfc_do_scr_ns_plogi(phba, vport);
11504
11505 /* The FDISC completed successfully. Move the fabric ndlp to
11506 * UNMAPPED state and register with the transport.
11507 */
11508 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
11509 goto out;
11510
11511fdisc_failed:
11512 if (vport->fc_vport &&
11513 (vport->fc_vport->vport_state != FC_VPORT_NO_FABRIC_RSCS))
11514 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
11515 /* Cancel discovery timer */
11516 lpfc_can_disctmo(vport);
11517out:
11518 lpfc_els_free_iocb(phba, cmdiocb);
11519 lpfc_nlp_put(ndlp);
11520}
11521
11522/**
11523 * lpfc_issue_els_fdisc - Issue a fdisc iocb command
11524 * @vport: pointer to a virtual N_Port data structure.
11525 * @ndlp: pointer to a node-list data structure.
11526 * @retry: number of retries to the command IOCB.
11527 *
11528 * This routine prepares and issues a Fabric Discover (FDISC) IOCB to
11529 * a remote node (@ndlp) off a @vport. It uses the lpfc_issue_fabric_iocb()
11530 * routine to issue the IOCB, which makes sure only one outstanding fabric
11531 * IOCB will be sent off HBA at any given time.
11532 *
11533 * Note that the ndlp reference count will be incremented by 1 for holding the
11534 * ndlp and the reference to ndlp will be stored into the ndlp field of
11535 * the IOCB for the completion callback function to the FDISC ELS command.
11536 *
11537 * Return code
11538 * 0 - Successfully issued fdisc iocb command
11539 * 1 - Failed to issue fdisc iocb command
11540 **/
11541static int
11542lpfc_issue_els_fdisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
11543 uint8_t retry)
11544{
11545 struct lpfc_hba *phba = vport->phba;
11546 IOCB_t *icmd;
11547 union lpfc_wqe128 *wqe = NULL;
11548 struct lpfc_iocbq *elsiocb;
11549 struct serv_parm *sp;
11550 uint8_t *pcmd;
11551 uint16_t cmdsize;
11552 int did = ndlp->nlp_DID;
11553 int rc;
11554
11555 vport->port_state = LPFC_FDISC;
11556 vport->fc_myDID = 0;
11557 cmdsize = (sizeof(uint32_t) + sizeof(struct serv_parm));
11558 elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp, did,
11559 ELS_CMD_FDISC);
11560 if (!elsiocb) {
11561 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
11562 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
11563 "0255 Issue FDISC: no IOCB\n");
11564 return 1;
11565 }
11566
11567 if (phba->sli_rev == LPFC_SLI_REV4) {
11568 wqe = &elsiocb->wqe;
11569 bf_set(els_req64_sid, &wqe->els_req, 0);
11570 bf_set(els_req64_sp, &wqe->els_req, 1);
11571 } else {
11572 icmd = &elsiocb->iocb;
11573 icmd->un.elsreq64.myID = 0;
11574 icmd->un.elsreq64.fl = 1;
11575 icmd->ulpCt_h = 1;
11576 icmd->ulpCt_l = 0;
11577 }
11578
11579 pcmd = (uint8_t *)elsiocb->cmd_dmabuf->virt;
11580 *((uint32_t *) (pcmd)) = ELS_CMD_FDISC;
11581 pcmd += sizeof(uint32_t); /* CSP Word 1 */
11582 memcpy(pcmd, &vport->phba->pport->fc_sparam, sizeof(struct serv_parm));
11583 sp = (struct serv_parm *) pcmd;
11584 /* Setup CSPs accordingly for Fabric */
11585 sp->cmn.e_d_tov = 0;
11586 sp->cmn.w2.r_a_tov = 0;
11587 sp->cmn.virtual_fabric_support = 0;
11588 sp->cls1.classValid = 0;
11589 sp->cls2.seqDelivery = 1;
11590 sp->cls3.seqDelivery = 1;
11591
11592 /* Fill out Auxiliary Parameter Data */
11593 if (phba->pni) {
11594 sp->aux.flags =
11595 AUX_PARM_DATA_VALID | AUX_PARM_PNI_VALID;
11596 sp->aux.pni = cpu_to_be64(phba->pni);
11597 }
11598
11599 pcmd += sizeof(uint32_t); /* CSP Word 2 */
11600 pcmd += sizeof(uint32_t); /* CSP Word 3 */
11601 pcmd += sizeof(uint32_t); /* CSP Word 4 */
11602 pcmd += sizeof(uint32_t); /* Port Name */
11603 memcpy(pcmd, &vport->fc_portname, 8);
11604 pcmd += sizeof(uint32_t); /* Node Name */
11605 pcmd += sizeof(uint32_t); /* Node Name */
11606 memcpy(pcmd, &vport->fc_nodename, 8);
11607 sp->cmn.valid_vendor_ver_level = 0;
11608 memset(sp->un.vendorVersion, 0, sizeof(sp->un.vendorVersion));
11609 lpfc_set_disctmo(vport);
11610
11611 phba->fc_stat.elsXmitFDISC++;
11612 elsiocb->cmd_cmpl = lpfc_cmpl_els_fdisc;
11613
11614 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
11615 "Issue FDISC: did:x%x",
11616 did, 0, 0);
11617
11618 elsiocb->ndlp = lpfc_nlp_get(ndlp);
11619 if (!elsiocb->ndlp)
11620 goto err_out;
11621
11622 rc = lpfc_issue_fabric_iocb(phba, elsiocb);
11623 if (rc == IOCB_ERROR) {
11624 lpfc_nlp_put(ndlp);
11625 goto err_out;
11626 }
11627
11628 lpfc_vport_set_state(vport, FC_VPORT_INITIALIZING);
11629 return 0;
11630
11631 err_out:
11632 lpfc_els_free_iocb(phba, elsiocb);
11633 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
11634 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
11635 "0256 Issue FDISC: Cannot send IOCB\n");
11636 return 1;
11637}
11638
11639/**
11640 * lpfc_cmpl_els_npiv_logo - Completion function with vport logo
11641 * @phba: pointer to lpfc hba data structure.
11642 * @cmdiocb: pointer to lpfc command iocb data structure.
11643 * @rspiocb: pointer to lpfc response iocb data structure.
11644 *
11645 * This routine is the completion callback function to the issuing of a LOGO
11646 * ELS command off a vport. It frees the command IOCB and then decrement the
11647 * reference count held on ndlp for this completion function, indicating that
11648 * the reference to the ndlp is no long needed. Note that the
11649 * lpfc_els_free_iocb() routine decrements the ndlp reference held for this
11650 * callback function and an additional explicit ndlp reference decrementation
11651 * will trigger the actual release of the ndlp.
11652 **/
11653static void
11654lpfc_cmpl_els_npiv_logo(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
11655 struct lpfc_iocbq *rspiocb)
11656{
11657 struct lpfc_vport *vport = cmdiocb->vport;
11658 IOCB_t *irsp;
11659 struct lpfc_nodelist *ndlp;
11660 u32 ulp_status, ulp_word4, did, tmo;
11661
11662 ndlp = cmdiocb->ndlp;
11663
11664 ulp_status = get_job_ulpstatus(phba, rspiocb);
11665 ulp_word4 = get_job_word4(phba, rspiocb);
11666
11667 if (phba->sli_rev == LPFC_SLI_REV4) {
11668 did = get_job_els_rsp64_did(phba, cmdiocb);
11669 tmo = get_wqe_tmo(cmdiocb);
11670 } else {
11671 irsp = &rspiocb->iocb;
11672 did = get_job_els_rsp64_did(phba, rspiocb);
11673 tmo = irsp->ulpTimeout;
11674 }
11675
11676 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
11677 "LOGO npiv cmpl: status:x%x/x%x did:x%x",
11678 ulp_status, ulp_word4, did);
11679
11680 /* NPIV LOGO completes to NPort <nlp_DID> */
11681 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
11682 "2928 NPIV LOGO completes to NPort x%x "
11683 "Data: x%x x%x x%x x%x x%x x%lx x%x\n",
11684 ndlp->nlp_DID, ulp_status, ulp_word4,
11685 tmo, vport->num_disc_nodes,
11686 kref_read(&ndlp->kref), ndlp->nlp_flag,
11687 ndlp->fc4_xpt_flags);
11688
11689 if (ulp_status == IOSTAT_SUCCESS) {
11690 clear_bit(FC_NDISC_ACTIVE, &vport->fc_flag);
11691 clear_bit(FC_FABRIC, &vport->fc_flag);
11692 lpfc_can_disctmo(vport);
11693 }
11694
11695 if (test_bit(NLP_WAIT_FOR_LOGO, &ndlp->save_flags)) {
11696 /* Wake up lpfc_vport_delete if waiting...*/
11697 if (ndlp->logo_waitq)
11698 wake_up(ndlp->logo_waitq);
11699 clear_bit(NLP_ISSUE_LOGO, &ndlp->nlp_flag);
11700 clear_bit(NLP_LOGO_SND, &ndlp->nlp_flag);
11701 clear_bit(NLP_WAIT_FOR_LOGO, &ndlp->save_flags);
11702 }
11703
11704 /* Safe to release resources now. */
11705 lpfc_els_free_iocb(phba, cmdiocb);
11706 lpfc_nlp_put(ndlp);
11707}
11708
11709/**
11710 * lpfc_issue_els_npiv_logo - Issue a logo off a vport
11711 * @vport: pointer to a virtual N_Port data structure.
11712 * @ndlp: pointer to a node-list data structure.
11713 *
11714 * This routine issues a LOGO ELS command to an @ndlp off a @vport.
11715 *
11716 * Note that the ndlp reference count will be incremented by 1 for holding the
11717 * ndlp and the reference to ndlp will be stored into the ndlp field of
11718 * the IOCB for the completion callback function to the LOGO ELS command.
11719 *
11720 * Return codes
11721 * 0 - Successfully issued logo off the @vport
11722 * 1 - Failed to issue logo off the @vport
11723 **/
11724int
11725lpfc_issue_els_npiv_logo(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
11726{
11727 int rc = 0;
11728 struct lpfc_hba *phba = vport->phba;
11729 struct lpfc_iocbq *elsiocb;
11730 uint8_t *pcmd;
11731 uint16_t cmdsize;
11732
11733 cmdsize = 2 * sizeof(uint32_t) + sizeof(struct lpfc_name);
11734 elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, 0, ndlp, ndlp->nlp_DID,
11735 ELS_CMD_LOGO);
11736 if (!elsiocb)
11737 return 1;
11738
11739 pcmd = (uint8_t *)elsiocb->cmd_dmabuf->virt;
11740 *((uint32_t *) (pcmd)) = ELS_CMD_LOGO;
11741 pcmd += sizeof(uint32_t);
11742
11743 /* Fill in LOGO payload */
11744 *((uint32_t *) (pcmd)) = be32_to_cpu(vport->fc_myDID);
11745 pcmd += sizeof(uint32_t);
11746 memcpy(pcmd, &vport->fc_portname, sizeof(struct lpfc_name));
11747
11748 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
11749 "Issue LOGO npiv did:x%x flg:x%lx",
11750 ndlp->nlp_DID, ndlp->nlp_flag, 0);
11751
11752 elsiocb->cmd_cmpl = lpfc_cmpl_els_npiv_logo;
11753 set_bit(NLP_LOGO_SND, &ndlp->nlp_flag);
11754 elsiocb->ndlp = lpfc_nlp_get(ndlp);
11755 if (!elsiocb->ndlp) {
11756 lpfc_els_free_iocb(phba, elsiocb);
11757 goto err;
11758 }
11759
11760 rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
11761 if (rc == IOCB_ERROR) {
11762 lpfc_els_free_iocb(phba, elsiocb);
11763 lpfc_nlp_put(ndlp);
11764 goto err;
11765 }
11766 return 0;
11767
11768err:
11769 clear_bit(NLP_LOGO_SND, &ndlp->nlp_flag);
11770 return 1;
11771}
11772
11773/**
11774 * lpfc_fabric_block_timeout - Handler function to the fabric block timer
11775 * @t: timer context used to obtain the lpfc hba.
11776 *
11777 * This routine is invoked by the fabric iocb block timer after
11778 * timeout. It posts the fabric iocb block timeout event by setting the
11779 * WORKER_FABRIC_BLOCK_TMO bit to work port event bitmap and then invokes
11780 * lpfc_worker_wake_up() routine to wake up the worker thread. It is for
11781 * the worker thread to invoke the lpfc_unblock_fabric_iocbs() on the
11782 * posted event WORKER_FABRIC_BLOCK_TMO.
11783 **/
11784void
11785lpfc_fabric_block_timeout(struct timer_list *t)
11786{
11787 struct lpfc_hba *phba = timer_container_of(phba, t,
11788 fabric_block_timer);
11789 unsigned long iflags;
11790 uint32_t tmo_posted;
11791
11792 spin_lock_irqsave(&phba->pport->work_port_lock, iflags);
11793 tmo_posted = phba->pport->work_port_events & WORKER_FABRIC_BLOCK_TMO;
11794 if (!tmo_posted)
11795 phba->pport->work_port_events |= WORKER_FABRIC_BLOCK_TMO;
11796 spin_unlock_irqrestore(&phba->pport->work_port_lock, iflags);
11797
11798 if (!tmo_posted)
11799 lpfc_worker_wake_up(phba);
11800 return;
11801}
11802
11803/**
11804 * lpfc_resume_fabric_iocbs - Issue a fabric iocb from driver internal list
11805 * @phba: pointer to lpfc hba data structure.
11806 *
11807 * This routine issues one fabric iocb from the driver internal list to
11808 * the HBA. It first checks whether it's ready to issue one fabric iocb to
11809 * the HBA (whether there is no outstanding fabric iocb). If so, it shall
11810 * remove one pending fabric iocb from the driver internal list and invokes
11811 * lpfc_sli_issue_iocb() routine to send the fabric iocb to the HBA.
11812 **/
11813static void
11814lpfc_resume_fabric_iocbs(struct lpfc_hba *phba)
11815{
11816 struct lpfc_iocbq *iocb;
11817 unsigned long iflags;
11818 int ret;
11819
11820repeat:
11821 iocb = NULL;
11822 spin_lock_irqsave(&phba->hbalock, iflags);
11823 /* Post any pending iocb to the SLI layer */
11824 if (atomic_read(&phba->fabric_iocb_count) == 0) {
11825 list_remove_head(&phba->fabric_iocb_list, iocb, typeof(*iocb),
11826 list);
11827 if (iocb)
11828 /* Increment fabric iocb count to hold the position */
11829 atomic_inc(&phba->fabric_iocb_count);
11830 }
11831 spin_unlock_irqrestore(&phba->hbalock, iflags);
11832 if (iocb) {
11833 iocb->fabric_cmd_cmpl = iocb->cmd_cmpl;
11834 iocb->cmd_cmpl = lpfc_cmpl_fabric_iocb;
11835 iocb->cmd_flag |= LPFC_IO_FABRIC;
11836
11837 lpfc_debugfs_disc_trc(iocb->vport, LPFC_DISC_TRC_ELS_CMD,
11838 "Fabric sched1: ste:x%x",
11839 iocb->vport->port_state, 0, 0);
11840
11841 ret = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, iocb, 0);
11842
11843 if (ret == IOCB_ERROR) {
11844 iocb->cmd_cmpl = iocb->fabric_cmd_cmpl;
11845 iocb->fabric_cmd_cmpl = NULL;
11846 iocb->cmd_flag &= ~LPFC_IO_FABRIC;
11847 set_job_ulpstatus(iocb, IOSTAT_LOCAL_REJECT);
11848 iocb->wcqe_cmpl.parameter = IOERR_SLI_ABORTED;
11849 iocb->cmd_cmpl(phba, iocb, iocb);
11850
11851 atomic_dec(&phba->fabric_iocb_count);
11852 goto repeat;
11853 }
11854 }
11855}
11856
11857/**
11858 * lpfc_unblock_fabric_iocbs - Unblock issuing fabric iocb command
11859 * @phba: pointer to lpfc hba data structure.
11860 *
11861 * This routine unblocks the issuing fabric iocb command. The function
11862 * will clear the fabric iocb block bit and then invoke the routine
11863 * lpfc_resume_fabric_iocbs() to issue one of the pending fabric iocb
11864 * from the driver internal fabric iocb list.
11865 **/
11866void
11867lpfc_unblock_fabric_iocbs(struct lpfc_hba *phba)
11868{
11869 clear_bit(FABRIC_COMANDS_BLOCKED, &phba->bit_flags);
11870
11871 lpfc_resume_fabric_iocbs(phba);
11872 return;
11873}
11874
11875/**
11876 * lpfc_block_fabric_iocbs - Block issuing fabric iocb command
11877 * @phba: pointer to lpfc hba data structure.
11878 *
11879 * This routine blocks the issuing fabric iocb for a specified amount of
11880 * time (currently 100 ms). This is done by set the fabric iocb block bit
11881 * and set up a timeout timer for 100ms. When the block bit is set, no more
11882 * fabric iocb will be issued out of the HBA.
11883 **/
11884static void
11885lpfc_block_fabric_iocbs(struct lpfc_hba *phba)
11886{
11887 int blocked;
11888
11889 blocked = test_and_set_bit(FABRIC_COMANDS_BLOCKED, &phba->bit_flags);
11890 /* Start a timer to unblock fabric iocbs after 100ms */
11891 if (!blocked)
11892 mod_timer(&phba->fabric_block_timer,
11893 jiffies + msecs_to_jiffies(100));
11894
11895 return;
11896}
11897
11898/**
11899 * lpfc_cmpl_fabric_iocb - Completion callback function for fabric iocb
11900 * @phba: pointer to lpfc hba data structure.
11901 * @cmdiocb: pointer to lpfc command iocb data structure.
11902 * @rspiocb: pointer to lpfc response iocb data structure.
11903 *
11904 * This routine is the callback function that is put to the fabric iocb's
11905 * callback function pointer (iocb->cmd_cmpl). The original iocb's callback
11906 * function pointer has been stored in iocb->fabric_cmd_cmpl. This callback
11907 * function first restores and invokes the original iocb's callback function
11908 * and then invokes the lpfc_resume_fabric_iocbs() routine to issue the next
11909 * fabric bound iocb from the driver internal fabric iocb list onto the wire.
11910 **/
11911static void
11912lpfc_cmpl_fabric_iocb(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
11913 struct lpfc_iocbq *rspiocb)
11914{
11915 struct ls_rjt stat;
11916 u32 ulp_status = get_job_ulpstatus(phba, rspiocb);
11917 u32 ulp_word4 = get_job_word4(phba, rspiocb);
11918
11919 WARN_ON((cmdiocb->cmd_flag & LPFC_IO_FABRIC) != LPFC_IO_FABRIC);
11920
11921 switch (ulp_status) {
11922 case IOSTAT_NPORT_RJT:
11923 case IOSTAT_FABRIC_RJT:
11924 if (ulp_word4 & RJT_UNAVAIL_TEMP)
11925 lpfc_block_fabric_iocbs(phba);
11926 break;
11927
11928 case IOSTAT_NPORT_BSY:
11929 case IOSTAT_FABRIC_BSY:
11930 lpfc_block_fabric_iocbs(phba);
11931 break;
11932
11933 case IOSTAT_LS_RJT:
11934 stat.un.ls_rjt_error_be =
11935 cpu_to_be32(ulp_word4);
11936 if ((stat.un.b.lsRjtRsnCode == LSRJT_UNABLE_TPC) ||
11937 (stat.un.b.lsRjtRsnCode == LSRJT_LOGICAL_BSY))
11938 lpfc_block_fabric_iocbs(phba);
11939 break;
11940 }
11941
11942 BUG_ON(atomic_read(&phba->fabric_iocb_count) == 0);
11943
11944 cmdiocb->cmd_cmpl = cmdiocb->fabric_cmd_cmpl;
11945 cmdiocb->fabric_cmd_cmpl = NULL;
11946 cmdiocb->cmd_flag &= ~LPFC_IO_FABRIC;
11947 cmdiocb->cmd_cmpl(phba, cmdiocb, rspiocb);
11948
11949 atomic_dec(&phba->fabric_iocb_count);
11950 if (!test_bit(FABRIC_COMANDS_BLOCKED, &phba->bit_flags)) {
11951 /* Post any pending iocbs to HBA */
11952 lpfc_resume_fabric_iocbs(phba);
11953 }
11954}
11955
11956/**
11957 * lpfc_issue_fabric_iocb - Issue a fabric iocb command
11958 * @phba: pointer to lpfc hba data structure.
11959 * @iocb: pointer to lpfc command iocb data structure.
11960 *
11961 * This routine is used as the top-level API for issuing a fabric iocb command
11962 * such as FLOGI and FDISC. To accommodate certain switch fabric, this driver
11963 * function makes sure that only one fabric bound iocb will be outstanding at
11964 * any given time. As such, this function will first check to see whether there
11965 * is already an outstanding fabric iocb on the wire. If so, it will put the
11966 * newly issued iocb onto the driver internal fabric iocb list, waiting to be
11967 * issued later. Otherwise, it will issue the iocb on the wire and update the
11968 * fabric iocb count it indicate that there is one fabric iocb on the wire.
11969 *
11970 * Note, this implementation has a potential sending out fabric IOCBs out of
11971 * order. The problem is caused by the construction of the "ready" boolen does
11972 * not include the condition that the internal fabric IOCB list is empty. As
11973 * such, it is possible a fabric IOCB issued by this routine might be "jump"
11974 * ahead of the fabric IOCBs in the internal list.
11975 *
11976 * Return code
11977 * IOCB_SUCCESS - either fabric iocb put on the list or issued successfully
11978 * IOCB_ERROR - failed to issue fabric iocb
11979 **/
11980static int
11981lpfc_issue_fabric_iocb(struct lpfc_hba *phba, struct lpfc_iocbq *iocb)
11982{
11983 unsigned long iflags;
11984 int ready;
11985 int ret;
11986
11987 BUG_ON(atomic_read(&phba->fabric_iocb_count) > 1);
11988
11989 spin_lock_irqsave(&phba->hbalock, iflags);
11990 ready = atomic_read(&phba->fabric_iocb_count) == 0 &&
11991 !test_bit(FABRIC_COMANDS_BLOCKED, &phba->bit_flags);
11992
11993 if (ready)
11994 /* Increment fabric iocb count to hold the position */
11995 atomic_inc(&phba->fabric_iocb_count);
11996 spin_unlock_irqrestore(&phba->hbalock, iflags);
11997 if (ready) {
11998 iocb->fabric_cmd_cmpl = iocb->cmd_cmpl;
11999 iocb->cmd_cmpl = lpfc_cmpl_fabric_iocb;
12000 iocb->cmd_flag |= LPFC_IO_FABRIC;
12001
12002 lpfc_debugfs_disc_trc(iocb->vport, LPFC_DISC_TRC_ELS_CMD,
12003 "Fabric sched2: ste:x%x",
12004 iocb->vport->port_state, 0, 0);
12005
12006 ret = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, iocb, 0);
12007
12008 if (ret == IOCB_ERROR) {
12009 iocb->cmd_cmpl = iocb->fabric_cmd_cmpl;
12010 iocb->fabric_cmd_cmpl = NULL;
12011 iocb->cmd_flag &= ~LPFC_IO_FABRIC;
12012 atomic_dec(&phba->fabric_iocb_count);
12013 }
12014 } else {
12015 spin_lock_irqsave(&phba->hbalock, iflags);
12016 list_add_tail(&iocb->list, &phba->fabric_iocb_list);
12017 spin_unlock_irqrestore(&phba->hbalock, iflags);
12018 ret = IOCB_SUCCESS;
12019 }
12020 return ret;
12021}
12022
12023/**
12024 * lpfc_fabric_abort_vport - Abort a vport's iocbs from driver fabric iocb list
12025 * @vport: pointer to a virtual N_Port data structure.
12026 *
12027 * This routine aborts all the IOCBs associated with a @vport from the
12028 * driver internal fabric IOCB list. The list contains fabric IOCBs to be
12029 * issued to the ELS IOCB ring. This abort function walks the fabric IOCB
12030 * list, removes each IOCB associated with the @vport off the list, set the
12031 * status field to IOSTAT_LOCAL_REJECT, and invokes the callback function
12032 * associated with the IOCB.
12033 **/
12034static void lpfc_fabric_abort_vport(struct lpfc_vport *vport)
12035{
12036 LIST_HEAD(completions);
12037 struct lpfc_hba *phba = vport->phba;
12038 struct lpfc_iocbq *tmp_iocb, *piocb;
12039
12040 spin_lock_irq(&phba->hbalock);
12041 list_for_each_entry_safe(piocb, tmp_iocb, &phba->fabric_iocb_list,
12042 list) {
12043
12044 if (piocb->vport != vport)
12045 continue;
12046
12047 list_move_tail(&piocb->list, &completions);
12048 }
12049 spin_unlock_irq(&phba->hbalock);
12050
12051 /* Cancel all the IOCBs from the completions list */
12052 lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT,
12053 IOERR_SLI_ABORTED);
12054}
12055
12056/**
12057 * lpfc_fabric_abort_nport - Abort a ndlp's iocbs from driver fabric iocb list
12058 * @ndlp: pointer to a node-list data structure.
12059 *
12060 * This routine aborts all the IOCBs associated with an @ndlp from the
12061 * driver internal fabric IOCB list. The list contains fabric IOCBs to be
12062 * issued to the ELS IOCB ring. This abort function walks the fabric IOCB
12063 * list, removes each IOCB associated with the @ndlp off the list, set the
12064 * status field to IOSTAT_LOCAL_REJECT, and invokes the callback function
12065 * associated with the IOCB.
12066 **/
12067void lpfc_fabric_abort_nport(struct lpfc_nodelist *ndlp)
12068{
12069 LIST_HEAD(completions);
12070 struct lpfc_hba *phba = ndlp->phba;
12071 struct lpfc_iocbq *tmp_iocb, *piocb;
12072 struct lpfc_sli_ring *pring;
12073
12074 pring = lpfc_phba_elsring(phba);
12075
12076 if (unlikely(!pring))
12077 return;
12078
12079 spin_lock_irq(&phba->hbalock);
12080 list_for_each_entry_safe(piocb, tmp_iocb, &phba->fabric_iocb_list,
12081 list) {
12082 if ((lpfc_check_sli_ndlp(phba, pring, piocb, ndlp))) {
12083
12084 list_move_tail(&piocb->list, &completions);
12085 }
12086 }
12087 spin_unlock_irq(&phba->hbalock);
12088
12089 /* Cancel all the IOCBs from the completions list */
12090 lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT,
12091 IOERR_SLI_ABORTED);
12092}
12093
12094/**
12095 * lpfc_fabric_abort_hba - Abort all iocbs on driver fabric iocb list
12096 * @phba: pointer to lpfc hba data structure.
12097 *
12098 * This routine aborts all the IOCBs currently on the driver internal
12099 * fabric IOCB list. The list contains fabric IOCBs to be issued to the ELS
12100 * IOCB ring. This function takes the entire IOCB list off the fabric IOCB
12101 * list, removes IOCBs off the list, set the status field to
12102 * IOSTAT_LOCAL_REJECT, and invokes the callback function associated with
12103 * the IOCB.
12104 **/
12105void lpfc_fabric_abort_hba(struct lpfc_hba *phba)
12106{
12107 LIST_HEAD(completions);
12108
12109 spin_lock_irq(&phba->hbalock);
12110 list_splice_init(&phba->fabric_iocb_list, &completions);
12111 spin_unlock_irq(&phba->hbalock);
12112
12113 /* Cancel all the IOCBs from the completions list */
12114 lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT,
12115 IOERR_SLI_ABORTED);
12116}
12117
12118/**
12119 * lpfc_sli4_vport_delete_els_xri_aborted -Remove all ndlp references for vport
12120 * @vport: pointer to lpfc vport data structure.
12121 *
12122 * This routine is invoked by the vport cleanup for deletions and the cleanup
12123 * for an ndlp on removal.
12124 **/
12125void
12126lpfc_sli4_vport_delete_els_xri_aborted(struct lpfc_vport *vport)
12127{
12128 struct lpfc_hba *phba = vport->phba;
12129 struct lpfc_sglq *sglq_entry = NULL, *sglq_next = NULL;
12130 struct lpfc_nodelist *ndlp = NULL;
12131 unsigned long iflag = 0;
12132
12133 spin_lock_irqsave(&phba->sli4_hba.sgl_list_lock, iflag);
12134 list_for_each_entry_safe(sglq_entry, sglq_next,
12135 &phba->sli4_hba.lpfc_abts_els_sgl_list, list) {
12136 if (sglq_entry->ndlp && sglq_entry->ndlp->vport == vport) {
12137 lpfc_nlp_put(sglq_entry->ndlp);
12138 ndlp = sglq_entry->ndlp;
12139 sglq_entry->ndlp = NULL;
12140
12141 /* If the xri on the abts_els_sgl list is for the Fport
12142 * node and the vport is unloading, the xri aborted wcqe
12143 * likely isn't coming back. Just release the sgl.
12144 */
12145 if (test_bit(FC_UNLOADING, &vport->load_flag) &&
12146 ndlp->nlp_DID == Fabric_DID) {
12147 list_del(&sglq_entry->list);
12148 sglq_entry->state = SGL_FREED;
12149 list_add_tail(&sglq_entry->list,
12150 &phba->sli4_hba.lpfc_els_sgl_list);
12151 }
12152 }
12153 }
12154 spin_unlock_irqrestore(&phba->sli4_hba.sgl_list_lock, iflag);
12155 return;
12156}
12157
12158/**
12159 * lpfc_sli4_els_xri_aborted - Slow-path process of els xri abort
12160 * @phba: pointer to lpfc hba data structure.
12161 * @axri: pointer to the els xri abort wcqe structure.
12162 *
12163 * This routine is invoked by the worker thread to process a SLI4 slow-path
12164 * ELS aborted xri.
12165 **/
12166void
12167lpfc_sli4_els_xri_aborted(struct lpfc_hba *phba,
12168 struct sli4_wcqe_xri_aborted *axri)
12169{
12170 uint16_t xri = bf_get(lpfc_wcqe_xa_xri, axri);
12171 uint16_t rxid = bf_get(lpfc_wcqe_xa_remote_xid, axri);
12172 uint16_t lxri = 0;
12173
12174 struct lpfc_sglq *sglq_entry = NULL, *sglq_next = NULL;
12175 unsigned long iflag = 0;
12176 struct lpfc_nodelist *ndlp;
12177 struct lpfc_sli_ring *pring;
12178
12179 pring = lpfc_phba_elsring(phba);
12180
12181 spin_lock_irqsave(&phba->sli4_hba.sgl_list_lock, iflag);
12182 list_for_each_entry_safe(sglq_entry, sglq_next,
12183 &phba->sli4_hba.lpfc_abts_els_sgl_list, list) {
12184 if (sglq_entry->sli4_xritag == xri) {
12185 list_del(&sglq_entry->list);
12186 ndlp = sglq_entry->ndlp;
12187 sglq_entry->ndlp = NULL;
12188 list_add_tail(&sglq_entry->list,
12189 &phba->sli4_hba.lpfc_els_sgl_list);
12190 sglq_entry->state = SGL_FREED;
12191 spin_unlock_irqrestore(&phba->sli4_hba.sgl_list_lock,
12192 iflag);
12193 lpfc_printf_log(phba, KERN_INFO, LOG_ELS | LOG_SLI |
12194 LOG_DISCOVERY | LOG_NODE,
12195 "0732 ELS XRI ABORT on Node: ndlp=x%px "
12196 "xri=x%x\n",
12197 ndlp, xri);
12198 if (ndlp) {
12199 lpfc_set_rrq_active(phba, ndlp,
12200 sglq_entry->sli4_lxritag,
12201 rxid, 1);
12202 lpfc_nlp_put(ndlp);
12203 }
12204
12205 /* Check if TXQ queue needs to be serviced */
12206 if (pring && !list_empty(&pring->txq))
12207 lpfc_worker_wake_up(phba);
12208 return;
12209 }
12210 }
12211 spin_unlock_irqrestore(&phba->sli4_hba.sgl_list_lock, iflag);
12212 lxri = lpfc_sli4_xri_inrange(phba, xri);
12213 if (lxri == NO_XRI)
12214 return;
12215
12216 spin_lock_irqsave(&phba->hbalock, iflag);
12217 sglq_entry = __lpfc_get_active_sglq(phba, lxri);
12218 if (!sglq_entry || (sglq_entry->sli4_xritag != xri)) {
12219 spin_unlock_irqrestore(&phba->hbalock, iflag);
12220 return;
12221 }
12222 sglq_entry->state = SGL_XRI_ABORTED;
12223 spin_unlock_irqrestore(&phba->hbalock, iflag);
12224 return;
12225}
12226
12227/* lpfc_sli_abts_recover_port - Recover a port that failed a BLS_ABORT req.
12228 * @vport: pointer to virtual port object.
12229 * @ndlp: nodelist pointer for the impacted node.
12230 *
12231 * The driver calls this routine in response to an SLI4 XRI ABORT CQE
12232 * or an SLI3 ASYNC_STATUS_CN event from the port. For either event,
12233 * the driver is required to send a LOGO to the remote node before it
12234 * attempts to recover its login to the remote node.
12235 */
12236void
12237lpfc_sli_abts_recover_port(struct lpfc_vport *vport,
12238 struct lpfc_nodelist *ndlp)
12239{
12240 struct Scsi_Host *shost;
12241 struct lpfc_hba *phba;
12242 unsigned long flags = 0;
12243
12244 shost = lpfc_shost_from_vport(vport);
12245 phba = vport->phba;
12246 if (ndlp->nlp_state != NLP_STE_MAPPED_NODE) {
12247 lpfc_printf_log(phba, KERN_INFO,
12248 LOG_SLI, "3093 No rport recovery needed. "
12249 "rport in state 0x%x\n", ndlp->nlp_state);
12250 return;
12251 }
12252 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
12253 "3094 Start rport recovery on shost id 0x%x "
12254 "fc_id 0x%06x vpi 0x%x rpi 0x%x state 0x%x "
12255 "flag 0x%lx\n",
12256 shost->host_no, ndlp->nlp_DID,
12257 vport->vpi, ndlp->nlp_rpi, ndlp->nlp_state,
12258 ndlp->nlp_flag);
12259 /*
12260 * The rport is not responding. Remove the FCP-2 flag to prevent
12261 * an ADISC in the follow-up recovery code.
12262 */
12263 spin_lock_irqsave(&ndlp->lock, flags);
12264 ndlp->nlp_fcp_info &= ~NLP_FCP_2_DEVICE;
12265 spin_unlock_irqrestore(&ndlp->lock, flags);
12266 set_bit(NLP_ISSUE_LOGO, &ndlp->nlp_flag);
12267 lpfc_unreg_rpi(vport, ndlp);
12268}
12269
12270static void lpfc_init_cs_ctl_bitmap(struct lpfc_vport *vport)
12271{
12272 bitmap_zero(vport->vmid_priority_range, LPFC_VMID_MAX_PRIORITY_RANGE);
12273}
12274
12275static void
12276lpfc_vmid_set_cs_ctl_range(struct lpfc_vport *vport, u32 min, u32 max)
12277{
12278 u32 i;
12279
12280 if ((min > max) || (max > LPFC_VMID_MAX_PRIORITY_RANGE))
12281 return;
12282
12283 for (i = min; i <= max; i++)
12284 set_bit(i, vport->vmid_priority_range);
12285}
12286
12287static void lpfc_vmid_put_cs_ctl(struct lpfc_vport *vport, u32 ctcl_vmid)
12288{
12289 set_bit(ctcl_vmid, vport->vmid_priority_range);
12290}
12291
12292u32 lpfc_vmid_get_cs_ctl(struct lpfc_vport *vport)
12293{
12294 u32 i;
12295
12296 i = find_first_bit(vport->vmid_priority_range,
12297 LPFC_VMID_MAX_PRIORITY_RANGE);
12298
12299 if (i == LPFC_VMID_MAX_PRIORITY_RANGE)
12300 return 0;
12301
12302 clear_bit(i, vport->vmid_priority_range);
12303 return i;
12304}
12305
12306#define MAX_PRIORITY_DESC 255
12307
12308static void
12309lpfc_cmpl_els_qfpa(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
12310 struct lpfc_iocbq *rspiocb)
12311{
12312 struct lpfc_vport *vport = cmdiocb->vport;
12313 struct priority_range_desc *desc;
12314 struct lpfc_dmabuf *prsp = NULL;
12315 struct lpfc_vmid_priority_range *vmid_range = NULL;
12316 u32 *data;
12317 struct lpfc_dmabuf *dmabuf = cmdiocb->cmd_dmabuf;
12318 u32 ulp_status = get_job_ulpstatus(phba, rspiocb);
12319 u32 ulp_word4 = get_job_word4(phba, rspiocb);
12320 u8 *pcmd, max_desc;
12321 u32 len, i;
12322 struct lpfc_nodelist *ndlp = cmdiocb->ndlp;
12323
12324 prsp = list_get_first(&dmabuf->list, struct lpfc_dmabuf, list);
12325 if (!prsp)
12326 goto out;
12327
12328 pcmd = prsp->virt;
12329 data = (u32 *)pcmd;
12330 if (data[0] == ELS_CMD_LS_RJT) {
12331 lpfc_printf_vlog(vport, KERN_WARNING, LOG_SLI,
12332 "3277 QFPA LS_RJT x%x x%x\n",
12333 data[0], data[1]);
12334 goto out;
12335 }
12336 if (ulp_status) {
12337 lpfc_printf_vlog(vport, KERN_ERR, LOG_SLI,
12338 "6529 QFPA failed with status x%x x%x\n",
12339 ulp_status, ulp_word4);
12340 goto out;
12341 }
12342
12343 if (!vport->qfpa_res) {
12344 max_desc = FCELSSIZE / sizeof(*vport->qfpa_res);
12345 vport->qfpa_res = kzalloc_objs(*vport->qfpa_res, max_desc);
12346 if (!vport->qfpa_res)
12347 goto out;
12348 }
12349
12350 len = *((u32 *)(pcmd + 4));
12351 len = be32_to_cpu(len);
12352 memcpy(vport->qfpa_res, pcmd, len + 8);
12353 len = len / LPFC_PRIORITY_RANGE_DESC_SIZE;
12354
12355 desc = (struct priority_range_desc *)(pcmd + 8);
12356 vmid_range = vport->vmid_priority.vmid_range;
12357 if (!vmid_range) {
12358 vmid_range = kzalloc_objs(*vmid_range, MAX_PRIORITY_DESC);
12359 if (!vmid_range) {
12360 kfree(vport->qfpa_res);
12361 goto out;
12362 }
12363 vport->vmid_priority.vmid_range = vmid_range;
12364 }
12365 vport->vmid_priority.num_descriptors = len;
12366
12367 for (i = 0; i < len; i++, vmid_range++, desc++) {
12368 lpfc_printf_vlog(vport, KERN_DEBUG, LOG_ELS,
12369 "6539 vmid values low=%d, high=%d, qos=%d, "
12370 "local ve id=%d\n", desc->lo_range,
12371 desc->hi_range, desc->qos_priority,
12372 desc->local_ve_id);
12373
12374 vmid_range->low = desc->lo_range << 1;
12375 if (desc->local_ve_id == QFPA_ODD_ONLY)
12376 vmid_range->low++;
12377 if (desc->qos_priority)
12378 vport->vmid_flag |= LPFC_VMID_QOS_ENABLED;
12379 vmid_range->qos = desc->qos_priority;
12380
12381 vmid_range->high = desc->hi_range << 1;
12382 if ((desc->local_ve_id == QFPA_ODD_ONLY) ||
12383 (desc->local_ve_id == QFPA_EVEN_ODD))
12384 vmid_range->high++;
12385 }
12386 lpfc_init_cs_ctl_bitmap(vport);
12387 for (i = 0; i < vport->vmid_priority.num_descriptors; i++) {
12388 lpfc_vmid_set_cs_ctl_range(vport,
12389 vport->vmid_priority.vmid_range[i].low,
12390 vport->vmid_priority.vmid_range[i].high);
12391 }
12392
12393 vport->vmid_flag |= LPFC_VMID_QFPA_CMPL;
12394 out:
12395 lpfc_els_free_iocb(phba, cmdiocb);
12396 lpfc_nlp_put(ndlp);
12397}
12398
12399int lpfc_issue_els_qfpa(struct lpfc_vport *vport)
12400{
12401 struct lpfc_hba *phba = vport->phba;
12402 struct lpfc_nodelist *ndlp;
12403 struct lpfc_iocbq *elsiocb;
12404 u8 *pcmd;
12405 int ret;
12406
12407 ndlp = lpfc_findnode_did(phba->pport, Fabric_DID);
12408 if (!ndlp || ndlp->nlp_state != NLP_STE_UNMAPPED_NODE)
12409 return -ENXIO;
12410
12411 elsiocb = lpfc_prep_els_iocb(vport, 1, LPFC_QFPA_SIZE, 2, ndlp,
12412 ndlp->nlp_DID, ELS_CMD_QFPA);
12413 if (!elsiocb)
12414 return -ENOMEM;
12415
12416 pcmd = (u8 *)elsiocb->cmd_dmabuf->virt;
12417
12418 *((u32 *)(pcmd)) = ELS_CMD_QFPA;
12419 pcmd += 4;
12420
12421 elsiocb->cmd_cmpl = lpfc_cmpl_els_qfpa;
12422
12423 elsiocb->ndlp = lpfc_nlp_get(ndlp);
12424 if (!elsiocb->ndlp) {
12425 lpfc_els_free_iocb(vport->phba, elsiocb);
12426 return -ENXIO;
12427 }
12428
12429 ret = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 2);
12430 if (ret != IOCB_SUCCESS) {
12431 lpfc_els_free_iocb(phba, elsiocb);
12432 lpfc_nlp_put(ndlp);
12433 return -EIO;
12434 }
12435 vport->vmid_flag &= ~LPFC_VMID_QOS_ENABLED;
12436 return 0;
12437}
12438
12439int
12440lpfc_vmid_uvem(struct lpfc_vport *vport,
12441 struct lpfc_vmid *vmid, bool instantiated)
12442{
12443 struct lpfc_vem_id_desc *vem_id_desc;
12444 struct lpfc_nodelist *ndlp;
12445 struct lpfc_iocbq *elsiocb;
12446 struct instantiated_ve_desc *inst_desc;
12447 struct lpfc_vmid_context *vmid_context;
12448 u8 *pcmd;
12449 u32 *len;
12450 int ret = 0;
12451
12452 ndlp = lpfc_findnode_did(vport, Fabric_DID);
12453 if (!ndlp || ndlp->nlp_state != NLP_STE_UNMAPPED_NODE)
12454 return -ENXIO;
12455
12456 vmid_context = kmalloc_obj(*vmid_context);
12457 if (!vmid_context)
12458 return -ENOMEM;
12459 elsiocb = lpfc_prep_els_iocb(vport, 1, LPFC_UVEM_SIZE, 2,
12460 ndlp, Fabric_DID, ELS_CMD_UVEM);
12461 if (!elsiocb)
12462 goto out;
12463
12464 lpfc_printf_vlog(vport, KERN_DEBUG, LOG_ELS,
12465 "3427 Host vmid %s %d\n",
12466 vmid->host_vmid, instantiated);
12467 vmid_context->vmp = vmid;
12468 vmid_context->nlp = ndlp;
12469 vmid_context->instantiated = instantiated;
12470 elsiocb->vmid_tag.vmid_context = vmid_context;
12471 pcmd = (u8 *)elsiocb->cmd_dmabuf->virt;
12472
12473 if (!memchr_inv(vport->lpfc_vmid_host_uuid, 0,
12474 sizeof(vport->lpfc_vmid_host_uuid)))
12475 memcpy(vport->lpfc_vmid_host_uuid, vmid->host_vmid,
12476 sizeof(vport->lpfc_vmid_host_uuid));
12477
12478 *((u32 *)(pcmd)) = ELS_CMD_UVEM;
12479 len = (u32 *)(pcmd + 4);
12480 *len = cpu_to_be32(LPFC_UVEM_SIZE - 8);
12481
12482 vem_id_desc = (struct lpfc_vem_id_desc *)(pcmd + 8);
12483 vem_id_desc->tag = be32_to_cpu(VEM_ID_DESC_TAG);
12484 vem_id_desc->length = be32_to_cpu(LPFC_UVEM_VEM_ID_DESC_SIZE);
12485 memcpy(vem_id_desc->vem_id, vport->lpfc_vmid_host_uuid,
12486 sizeof(vem_id_desc->vem_id));
12487
12488 inst_desc = (struct instantiated_ve_desc *)(pcmd + 32);
12489 inst_desc->tag = be32_to_cpu(INSTANTIATED_VE_DESC_TAG);
12490 inst_desc->length = be32_to_cpu(LPFC_UVEM_VE_MAP_DESC_SIZE);
12491 memcpy(inst_desc->global_vem_id, vmid->host_vmid,
12492 sizeof(inst_desc->global_vem_id));
12493
12494 bf_set(lpfc_instantiated_nport_id, inst_desc, vport->fc_myDID);
12495 bf_set(lpfc_instantiated_local_id, inst_desc,
12496 vmid->un.cs_ctl_vmid);
12497 if (instantiated) {
12498 inst_desc->tag = be32_to_cpu(INSTANTIATED_VE_DESC_TAG);
12499 } else {
12500 inst_desc->tag = be32_to_cpu(DEINSTANTIATED_VE_DESC_TAG);
12501 lpfc_vmid_put_cs_ctl(vport, vmid->un.cs_ctl_vmid);
12502 }
12503 inst_desc->word6 = cpu_to_be32(inst_desc->word6);
12504
12505 elsiocb->cmd_cmpl = lpfc_cmpl_els_uvem;
12506
12507 elsiocb->ndlp = lpfc_nlp_get(ndlp);
12508 if (!elsiocb->ndlp) {
12509 lpfc_els_free_iocb(vport->phba, elsiocb);
12510 goto out;
12511 }
12512
12513 ret = lpfc_sli_issue_iocb(vport->phba, LPFC_ELS_RING, elsiocb, 0);
12514 if (ret != IOCB_SUCCESS) {
12515 lpfc_els_free_iocb(vport->phba, elsiocb);
12516 lpfc_nlp_put(ndlp);
12517 goto out;
12518 }
12519
12520 return 0;
12521 out:
12522 kfree(vmid_context);
12523 return -EIO;
12524}
12525
12526static void
12527lpfc_cmpl_els_uvem(struct lpfc_hba *phba, struct lpfc_iocbq *icmdiocb,
12528 struct lpfc_iocbq *rspiocb)
12529{
12530 struct lpfc_vport *vport = icmdiocb->vport;
12531 struct lpfc_dmabuf *prsp = NULL;
12532 struct lpfc_vmid_context *vmid_context =
12533 icmdiocb->vmid_tag.vmid_context;
12534 struct lpfc_nodelist *ndlp = icmdiocb->ndlp;
12535 u8 *pcmd;
12536 u32 *data;
12537 u32 ulp_status = get_job_ulpstatus(phba, rspiocb);
12538 u32 ulp_word4 = get_job_word4(phba, rspiocb);
12539 struct lpfc_dmabuf *dmabuf = icmdiocb->cmd_dmabuf;
12540 struct lpfc_vmid *vmid;
12541
12542 vmid = vmid_context->vmp;
12543 if (!ndlp || ndlp->nlp_state != NLP_STE_UNMAPPED_NODE)
12544 ndlp = NULL;
12545
12546 prsp = list_get_first(&dmabuf->list, struct lpfc_dmabuf, list);
12547 if (!prsp)
12548 goto out;
12549 pcmd = prsp->virt;
12550 data = (u32 *)pcmd;
12551 if (data[0] == ELS_CMD_LS_RJT) {
12552 lpfc_printf_vlog(vport, KERN_WARNING, LOG_SLI,
12553 "4532 UVEM LS_RJT %x %x\n", data[0], data[1]);
12554 goto out;
12555 }
12556 if (ulp_status) {
12557 lpfc_printf_vlog(vport, KERN_WARNING, LOG_SLI,
12558 "4533 UVEM error status %x: %x\n",
12559 ulp_status, ulp_word4);
12560 goto out;
12561 }
12562 spin_lock(&phba->hbalock);
12563 /* Set IN USE flag */
12564 vport->vmid_flag |= LPFC_VMID_IN_USE;
12565 phba->pport->vmid_flag |= LPFC_VMID_IN_USE;
12566 spin_unlock(&phba->hbalock);
12567
12568 if (vmid_context->instantiated) {
12569 write_lock(&vport->vmid_lock);
12570 vmid->flag |= LPFC_VMID_REGISTERED;
12571 vmid->flag &= ~LPFC_VMID_REQ_REGISTER;
12572 write_unlock(&vport->vmid_lock);
12573 }
12574
12575 out:
12576 kfree(vmid_context);
12577 lpfc_els_free_iocb(phba, icmdiocb);
12578 lpfc_nlp_put(ndlp);
12579}