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scsi: qla2xxx: Update driver version to 10.00.00.11-k
[linux-2.6-block.git] / drivers / scsi / lpfc / lpfc_nportdisc.c
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1/*******************************************************************
2 * This file is part of the Emulex Linux Device Driver for *
3 * Fibre Channel Host Bus Adapters. *
4 * Copyright (C) 2017-2018 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
24#include <linux/blkdev.h>
25#include <linux/pci.h>
26#include <linux/slab.h>
27#include <linux/interrupt.h>
28
29#include <scsi/scsi.h>
30#include <scsi/scsi_device.h>
31#include <scsi/scsi_host.h>
32#include <scsi/scsi_transport_fc.h>
33#include <scsi/fc/fc_fs.h>
34
35#include <linux/nvme-fc-driver.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.h"
44#include "lpfc_scsi.h"
45#include "lpfc_nvme.h"
46#include "lpfc_logmsg.h"
47#include "lpfc_crtn.h"
48#include "lpfc_vport.h"
49#include "lpfc_debugfs.h"
50
51
52/* Called to verify a rcv'ed ADISC was intended for us. */
53static int
54lpfc_check_adisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
55 struct lpfc_name *nn, struct lpfc_name *pn)
56{
57 /* First, we MUST have a RPI registered */
58 if (!(ndlp->nlp_flag & NLP_RPI_REGISTERED))
59 return 0;
60
61 /* Compare the ADISC rsp WWNN / WWPN matches our internal node
62 * table entry for that node.
63 */
64 if (memcmp(nn, &ndlp->nlp_nodename, sizeof (struct lpfc_name)))
65 return 0;
66
67 if (memcmp(pn, &ndlp->nlp_portname, sizeof (struct lpfc_name)))
68 return 0;
69
70 /* we match, return success */
71 return 1;
72}
73
74int
75lpfc_check_sparm(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
76 struct serv_parm *sp, uint32_t class, int flogi)
77{
78 volatile struct serv_parm *hsp = &vport->fc_sparam;
79 uint16_t hsp_value, ssp_value = 0;
80
81 /*
82 * The receive data field size and buffer-to-buffer receive data field
83 * size entries are 16 bits but are represented as two 8-bit fields in
84 * the driver data structure to account for rsvd bits and other control
85 * bits. Reconstruct and compare the fields as a 16-bit values before
86 * correcting the byte values.
87 */
88 if (sp->cls1.classValid) {
89 if (!flogi) {
90 hsp_value = ((hsp->cls1.rcvDataSizeMsb << 8) |
91 hsp->cls1.rcvDataSizeLsb);
92 ssp_value = ((sp->cls1.rcvDataSizeMsb << 8) |
93 sp->cls1.rcvDataSizeLsb);
94 if (!ssp_value)
95 goto bad_service_param;
96 if (ssp_value > hsp_value) {
97 sp->cls1.rcvDataSizeLsb =
98 hsp->cls1.rcvDataSizeLsb;
99 sp->cls1.rcvDataSizeMsb =
100 hsp->cls1.rcvDataSizeMsb;
101 }
102 }
103 } else if (class == CLASS1)
104 goto bad_service_param;
105 if (sp->cls2.classValid) {
106 if (!flogi) {
107 hsp_value = ((hsp->cls2.rcvDataSizeMsb << 8) |
108 hsp->cls2.rcvDataSizeLsb);
109 ssp_value = ((sp->cls2.rcvDataSizeMsb << 8) |
110 sp->cls2.rcvDataSizeLsb);
111 if (!ssp_value)
112 goto bad_service_param;
113 if (ssp_value > hsp_value) {
114 sp->cls2.rcvDataSizeLsb =
115 hsp->cls2.rcvDataSizeLsb;
116 sp->cls2.rcvDataSizeMsb =
117 hsp->cls2.rcvDataSizeMsb;
118 }
119 }
120 } else if (class == CLASS2)
121 goto bad_service_param;
122 if (sp->cls3.classValid) {
123 if (!flogi) {
124 hsp_value = ((hsp->cls3.rcvDataSizeMsb << 8) |
125 hsp->cls3.rcvDataSizeLsb);
126 ssp_value = ((sp->cls3.rcvDataSizeMsb << 8) |
127 sp->cls3.rcvDataSizeLsb);
128 if (!ssp_value)
129 goto bad_service_param;
130 if (ssp_value > hsp_value) {
131 sp->cls3.rcvDataSizeLsb =
132 hsp->cls3.rcvDataSizeLsb;
133 sp->cls3.rcvDataSizeMsb =
134 hsp->cls3.rcvDataSizeMsb;
135 }
136 }
137 } else if (class == CLASS3)
138 goto bad_service_param;
139
140 /*
141 * Preserve the upper four bits of the MSB from the PLOGI response.
142 * These bits contain the Buffer-to-Buffer State Change Number
143 * from the target and need to be passed to the FW.
144 */
145 hsp_value = (hsp->cmn.bbRcvSizeMsb << 8) | hsp->cmn.bbRcvSizeLsb;
146 ssp_value = (sp->cmn.bbRcvSizeMsb << 8) | sp->cmn.bbRcvSizeLsb;
147 if (ssp_value > hsp_value) {
148 sp->cmn.bbRcvSizeLsb = hsp->cmn.bbRcvSizeLsb;
149 sp->cmn.bbRcvSizeMsb = (sp->cmn.bbRcvSizeMsb & 0xF0) |
150 (hsp->cmn.bbRcvSizeMsb & 0x0F);
151 }
152
153 memcpy(&ndlp->nlp_nodename, &sp->nodeName, sizeof (struct lpfc_name));
154 memcpy(&ndlp->nlp_portname, &sp->portName, sizeof (struct lpfc_name));
155 return 1;
156bad_service_param:
157 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
158 "0207 Device %x "
159 "(%02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x) sent "
160 "invalid service parameters. Ignoring device.\n",
161 ndlp->nlp_DID,
162 sp->nodeName.u.wwn[0], sp->nodeName.u.wwn[1],
163 sp->nodeName.u.wwn[2], sp->nodeName.u.wwn[3],
164 sp->nodeName.u.wwn[4], sp->nodeName.u.wwn[5],
165 sp->nodeName.u.wwn[6], sp->nodeName.u.wwn[7]);
166 return 0;
167}
168
169static void *
170lpfc_check_elscmpl_iocb(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
171 struct lpfc_iocbq *rspiocb)
172{
173 struct lpfc_dmabuf *pcmd, *prsp;
174 uint32_t *lp;
175 void *ptr = NULL;
176 IOCB_t *irsp;
177
178 irsp = &rspiocb->iocb;
179 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
180
181 /* For lpfc_els_abort, context2 could be zero'ed to delay
182 * freeing associated memory till after ABTS completes.
183 */
184 if (pcmd) {
185 prsp = list_get_first(&pcmd->list, struct lpfc_dmabuf,
186 list);
187 if (prsp) {
188 lp = (uint32_t *) prsp->virt;
189 ptr = (void *)((uint8_t *)lp + sizeof(uint32_t));
190 }
191 } else {
192 /* Force ulpStatus error since we are returning NULL ptr */
193 if (!(irsp->ulpStatus)) {
194 irsp->ulpStatus = IOSTAT_LOCAL_REJECT;
195 irsp->un.ulpWord[4] = IOERR_SLI_ABORTED;
196 }
197 ptr = NULL;
198 }
199 return ptr;
200}
201
202
203
204/*
205 * Free resources / clean up outstanding I/Os
206 * associated with a LPFC_NODELIST entry. This
207 * routine effectively results in a "software abort".
208 */
209void
210lpfc_els_abort(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
211{
212 LIST_HEAD(abort_list);
213 struct lpfc_sli_ring *pring;
214 struct lpfc_iocbq *iocb, *next_iocb;
215
216 pring = lpfc_phba_elsring(phba);
217
218 /* In case of error recovery path, we might have a NULL pring here */
219 if (unlikely(!pring))
220 return;
221
222 /* Abort outstanding I/O on NPort <nlp_DID> */
223 lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_DISCOVERY,
224 "2819 Abort outstanding I/O on NPort x%x "
225 "Data: x%x x%x x%x\n",
226 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
227 ndlp->nlp_rpi);
228 /* Clean up all fabric IOs first.*/
229 lpfc_fabric_abort_nport(ndlp);
230
231 /*
232 * Lock the ELS ring txcmplq for SLI3/SLI4 and build a local list
233 * of all ELS IOs that need an ABTS. The IOs need to stay on the
234 * txcmplq so that the abort operation completes them successfully.
235 */
236 spin_lock_irq(&phba->hbalock);
237 if (phba->sli_rev == LPFC_SLI_REV4)
238 spin_lock(&pring->ring_lock);
239 list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq, list) {
240 /* Add to abort_list on on NDLP match. */
241 if (lpfc_check_sli_ndlp(phba, pring, iocb, ndlp))
242 list_add_tail(&iocb->dlist, &abort_list);
243 }
244 if (phba->sli_rev == LPFC_SLI_REV4)
245 spin_unlock(&pring->ring_lock);
246 spin_unlock_irq(&phba->hbalock);
247
248 /* Abort the targeted IOs and remove them from the abort list. */
249 list_for_each_entry_safe(iocb, next_iocb, &abort_list, dlist) {
250 spin_lock_irq(&phba->hbalock);
251 list_del_init(&iocb->dlist);
252 lpfc_sli_issue_abort_iotag(phba, pring, iocb);
253 spin_unlock_irq(&phba->hbalock);
254 }
255
256 INIT_LIST_HEAD(&abort_list);
257
258 /* Now process the txq */
259 spin_lock_irq(&phba->hbalock);
260 if (phba->sli_rev == LPFC_SLI_REV4)
261 spin_lock(&pring->ring_lock);
262
263 list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) {
264 /* Check to see if iocb matches the nport we are looking for */
265 if (lpfc_check_sli_ndlp(phba, pring, iocb, ndlp)) {
266 list_del_init(&iocb->list);
267 list_add_tail(&iocb->list, &abort_list);
268 }
269 }
270
271 if (phba->sli_rev == LPFC_SLI_REV4)
272 spin_unlock(&pring->ring_lock);
273 spin_unlock_irq(&phba->hbalock);
274
275 /* Cancel all the IOCBs from the completions list */
276 lpfc_sli_cancel_iocbs(phba, &abort_list,
277 IOSTAT_LOCAL_REJECT, IOERR_SLI_ABORTED);
278
279 lpfc_cancel_retry_delay_tmo(phba->pport, ndlp);
280}
281
282static int
283lpfc_rcv_plogi(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
284 struct lpfc_iocbq *cmdiocb)
285{
286 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
287 struct lpfc_hba *phba = vport->phba;
288 struct lpfc_dmabuf *pcmd;
289 uint64_t nlp_portwwn = 0;
290 uint32_t *lp;
291 IOCB_t *icmd;
292 struct serv_parm *sp;
293 uint32_t ed_tov;
294 LPFC_MBOXQ_t *mbox;
295 struct ls_rjt stat;
296 uint32_t vid, flag;
297 int rc;
298
299 memset(&stat, 0, sizeof (struct ls_rjt));
300 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
301 lp = (uint32_t *) pcmd->virt;
302 sp = (struct serv_parm *) ((uint8_t *) lp + sizeof (uint32_t));
303 if (wwn_to_u64(sp->portName.u.wwn) == 0) {
304 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
305 "0140 PLOGI Reject: invalid nname\n");
306 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
307 stat.un.b.lsRjtRsnCodeExp = LSEXP_INVALID_PNAME;
308 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
309 NULL);
310 return 0;
311 }
312 if (wwn_to_u64(sp->nodeName.u.wwn) == 0) {
313 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
314 "0141 PLOGI Reject: invalid pname\n");
315 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
316 stat.un.b.lsRjtRsnCodeExp = LSEXP_INVALID_NNAME;
317 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
318 NULL);
319 return 0;
320 }
321
322 nlp_portwwn = wwn_to_u64(ndlp->nlp_portname.u.wwn);
323 if ((lpfc_check_sparm(vport, ndlp, sp, CLASS3, 0) == 0)) {
324 /* Reject this request because invalid parameters */
325 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
326 stat.un.b.lsRjtRsnCodeExp = LSEXP_SPARM_OPTIONS;
327 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
328 NULL);
329 return 0;
330 }
331 icmd = &cmdiocb->iocb;
332
333 /* PLOGI chkparm OK */
334 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
335 "0114 PLOGI chkparm OK Data: x%x x%x x%x "
336 "x%x x%x x%x\n",
337 ndlp->nlp_DID, ndlp->nlp_state, ndlp->nlp_flag,
338 ndlp->nlp_rpi, vport->port_state,
339 vport->fc_flag);
340
341 if (vport->cfg_fcp_class == 2 && sp->cls2.classValid)
342 ndlp->nlp_fcp_info |= CLASS2;
343 else
344 ndlp->nlp_fcp_info |= CLASS3;
345
346 ndlp->nlp_class_sup = 0;
347 if (sp->cls1.classValid)
348 ndlp->nlp_class_sup |= FC_COS_CLASS1;
349 if (sp->cls2.classValid)
350 ndlp->nlp_class_sup |= FC_COS_CLASS2;
351 if (sp->cls3.classValid)
352 ndlp->nlp_class_sup |= FC_COS_CLASS3;
353 if (sp->cls4.classValid)
354 ndlp->nlp_class_sup |= FC_COS_CLASS4;
355 ndlp->nlp_maxframe =
356 ((sp->cmn.bbRcvSizeMsb & 0x0F) << 8) | sp->cmn.bbRcvSizeLsb;
357
358 /* if already logged in, do implicit logout */
359 switch (ndlp->nlp_state) {
360 case NLP_STE_NPR_NODE:
361 if (!(ndlp->nlp_flag & NLP_NPR_ADISC))
362 break;
363 case NLP_STE_REG_LOGIN_ISSUE:
364 case NLP_STE_PRLI_ISSUE:
365 case NLP_STE_UNMAPPED_NODE:
366 case NLP_STE_MAPPED_NODE:
367 /* For initiators, lpfc_plogi_confirm_nport skips fabric did.
368 * For target mode, execute implicit logo.
369 * Fabric nodes go into NPR.
370 */
371 if (!(ndlp->nlp_type & NLP_FABRIC) &&
372 !(phba->nvmet_support)) {
373 lpfc_els_rsp_acc(vport, ELS_CMD_PLOGI, cmdiocb,
374 ndlp, NULL);
375 return 1;
376 }
377 if (nlp_portwwn != 0 &&
378 nlp_portwwn != wwn_to_u64(sp->portName.u.wwn))
379 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
380 "0143 PLOGI recv'd from DID: x%x "
381 "WWPN changed: old %llx new %llx\n",
382 ndlp->nlp_DID,
383 (unsigned long long)nlp_portwwn,
384 (unsigned long long)
385 wwn_to_u64(sp->portName.u.wwn));
386
387 ndlp->nlp_prev_state = ndlp->nlp_state;
388 /* rport needs to be unregistered first */
389 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
390 break;
391 }
392
393 ndlp->nlp_type &= ~(NLP_FCP_TARGET | NLP_FCP_INITIATOR);
394 ndlp->nlp_type &= ~(NLP_NVME_TARGET | NLP_NVME_INITIATOR);
395 ndlp->nlp_fcp_info &= ~NLP_FCP_2_DEVICE;
396 ndlp->nlp_flag &= ~NLP_FIRSTBURST;
397
398 /* Check for Nport to NPort pt2pt protocol */
399 if ((vport->fc_flag & FC_PT2PT) &&
400 !(vport->fc_flag & FC_PT2PT_PLOGI)) {
401 /* rcv'ed PLOGI decides what our NPortId will be */
402 vport->fc_myDID = icmd->un.rcvels.parmRo;
403
404 ed_tov = be32_to_cpu(sp->cmn.e_d_tov);
405 if (sp->cmn.edtovResolution) {
406 /* E_D_TOV ticks are in nanoseconds */
407 ed_tov = (phba->fc_edtov + 999999) / 1000000;
408 }
409
410 /*
411 * For pt-to-pt, use the larger EDTOV
412 * RATOV = 2 * EDTOV
413 */
414 if (ed_tov > phba->fc_edtov)
415 phba->fc_edtov = ed_tov;
416 phba->fc_ratov = (2 * phba->fc_edtov) / 1000;
417
418 memcpy(&phba->fc_fabparam, sp, sizeof(struct serv_parm));
419
420 /* Issue config_link / reg_vfi to account for updated TOV's */
421
422 if (phba->sli_rev == LPFC_SLI_REV4)
423 lpfc_issue_reg_vfi(vport);
424 else {
425 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
426 if (mbox == NULL)
427 goto out;
428 lpfc_config_link(phba, mbox);
429 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
430 mbox->vport = vport;
431 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
432 if (rc == MBX_NOT_FINISHED) {
433 mempool_free(mbox, phba->mbox_mem_pool);
434 goto out;
435 }
436 }
437
438 lpfc_can_disctmo(vport);
439 }
440
441 ndlp->nlp_flag &= ~NLP_SUPPRESS_RSP;
442 if ((phba->sli.sli_flag & LPFC_SLI_SUPPRESS_RSP) &&
443 sp->cmn.valid_vendor_ver_level) {
444 vid = be32_to_cpu(sp->un.vv.vid);
445 flag = be32_to_cpu(sp->un.vv.flags);
446 if ((vid == LPFC_VV_EMLX_ID) && (flag & LPFC_VV_SUPPRESS_RSP))
447 ndlp->nlp_flag |= NLP_SUPPRESS_RSP;
448 }
449
450 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
451 if (!mbox)
452 goto out;
453
454 /* Registering an existing RPI behaves differently for SLI3 vs SLI4 */
455 if (phba->sli_rev == LPFC_SLI_REV4)
456 lpfc_unreg_rpi(vport, ndlp);
457
458 rc = lpfc_reg_rpi(phba, vport->vpi, icmd->un.rcvels.remoteID,
459 (uint8_t *) sp, mbox, ndlp->nlp_rpi);
460 if (rc) {
461 mempool_free(mbox, phba->mbox_mem_pool);
462 goto out;
463 }
464
465 /* ACC PLOGI rsp command needs to execute first,
466 * queue this mbox command to be processed later.
467 */
468 mbox->mbox_cmpl = lpfc_mbx_cmpl_reg_login;
469 /*
470 * mbox->context2 = lpfc_nlp_get(ndlp) deferred until mailbox
471 * command issued in lpfc_cmpl_els_acc().
472 */
473 mbox->vport = vport;
474 spin_lock_irq(shost->host_lock);
475 ndlp->nlp_flag |= (NLP_ACC_REGLOGIN | NLP_RCV_PLOGI);
476 spin_unlock_irq(shost->host_lock);
477
478 /*
479 * If there is an outstanding PLOGI issued, abort it before
480 * sending ACC rsp for received PLOGI. If pending plogi
481 * is not canceled here, the plogi will be rejected by
482 * remote port and will be retried. On a configuration with
483 * single discovery thread, this will cause a huge delay in
484 * discovery. Also this will cause multiple state machines
485 * running in parallel for this node.
486 */
487 if (ndlp->nlp_state == NLP_STE_PLOGI_ISSUE) {
488 /* software abort outstanding PLOGI */
489 lpfc_els_abort(phba, ndlp);
490 }
491
492 if ((vport->port_type == LPFC_NPIV_PORT &&
493 vport->cfg_restrict_login)) {
494
495 /* In order to preserve RPIs, we want to cleanup
496 * the default RPI the firmware created to rcv
497 * this ELS request. The only way to do this is
498 * to register, then unregister the RPI.
499 */
500 spin_lock_irq(shost->host_lock);
501 ndlp->nlp_flag |= NLP_RM_DFLT_RPI;
502 spin_unlock_irq(shost->host_lock);
503 stat.un.b.lsRjtRsnCode = LSRJT_INVALID_CMD;
504 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
505 rc = lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb,
506 ndlp, mbox);
507 if (rc)
508 mempool_free(mbox, phba->mbox_mem_pool);
509 return 1;
510 }
511 rc = lpfc_els_rsp_acc(vport, ELS_CMD_PLOGI, cmdiocb, ndlp, mbox);
512 if (rc)
513 mempool_free(mbox, phba->mbox_mem_pool);
514 return 1;
515out:
516 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
517 stat.un.b.lsRjtRsnCodeExp = LSEXP_OUT_OF_RESOURCE;
518 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
519 return 0;
520}
521
522/**
523 * lpfc_mbx_cmpl_resume_rpi - Resume RPI completion routine
524 * @phba: pointer to lpfc hba data structure.
525 * @mboxq: pointer to mailbox object
526 *
527 * This routine is invoked to issue a completion to a rcv'ed
528 * ADISC or PDISC after the paused RPI has been resumed.
529 **/
530static void
531lpfc_mbx_cmpl_resume_rpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
532{
533 struct lpfc_vport *vport;
534 struct lpfc_iocbq *elsiocb;
535 struct lpfc_nodelist *ndlp;
536 uint32_t cmd;
537
538 elsiocb = (struct lpfc_iocbq *)mboxq->context1;
539 ndlp = (struct lpfc_nodelist *) mboxq->context2;
540 vport = mboxq->vport;
541 cmd = elsiocb->drvrTimeout;
542
543 if (cmd == ELS_CMD_ADISC) {
544 lpfc_els_rsp_adisc_acc(vport, elsiocb, ndlp);
545 } else {
546 lpfc_els_rsp_acc(vport, ELS_CMD_PLOGI, elsiocb,
547 ndlp, NULL);
548 }
549 kfree(elsiocb);
550 mempool_free(mboxq, phba->mbox_mem_pool);
551}
552
553static int
554lpfc_rcv_padisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
555 struct lpfc_iocbq *cmdiocb)
556{
557 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
558 struct lpfc_iocbq *elsiocb;
559 struct lpfc_dmabuf *pcmd;
560 struct serv_parm *sp;
561 struct lpfc_name *pnn, *ppn;
562 struct ls_rjt stat;
563 ADISC *ap;
564 IOCB_t *icmd;
565 uint32_t *lp;
566 uint32_t cmd;
567
568 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
569 lp = (uint32_t *) pcmd->virt;
570
571 cmd = *lp++;
572 if (cmd == ELS_CMD_ADISC) {
573 ap = (ADISC *) lp;
574 pnn = (struct lpfc_name *) & ap->nodeName;
575 ppn = (struct lpfc_name *) & ap->portName;
576 } else {
577 sp = (struct serv_parm *) lp;
578 pnn = (struct lpfc_name *) & sp->nodeName;
579 ppn = (struct lpfc_name *) & sp->portName;
580 }
581
582 icmd = &cmdiocb->iocb;
583 if (icmd->ulpStatus == 0 && lpfc_check_adisc(vport, ndlp, pnn, ppn)) {
584
585 /*
586 * As soon as we send ACC, the remote NPort can
587 * start sending us data. Thus, for SLI4 we must
588 * resume the RPI before the ACC goes out.
589 */
590 if (vport->phba->sli_rev == LPFC_SLI_REV4) {
591 elsiocb = kmalloc(sizeof(struct lpfc_iocbq),
592 GFP_KERNEL);
593 if (elsiocb) {
594
595 /* Save info from cmd IOCB used in rsp */
596 memcpy((uint8_t *)elsiocb, (uint8_t *)cmdiocb,
597 sizeof(struct lpfc_iocbq));
598
599 /* Save the ELS cmd */
600 elsiocb->drvrTimeout = cmd;
601
602 lpfc_sli4_resume_rpi(ndlp,
603 lpfc_mbx_cmpl_resume_rpi, elsiocb);
604 goto out;
605 }
606 }
607
608 if (cmd == ELS_CMD_ADISC) {
609 lpfc_els_rsp_adisc_acc(vport, cmdiocb, ndlp);
610 } else {
611 lpfc_els_rsp_acc(vport, ELS_CMD_PLOGI, cmdiocb,
612 ndlp, NULL);
613 }
614out:
615 /* If we are authenticated, move to the proper state */
616 if (ndlp->nlp_type & NLP_FCP_TARGET)
617 lpfc_nlp_set_state(vport, ndlp, NLP_STE_MAPPED_NODE);
618 else
619 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
620
621 return 1;
622 }
623 /* Reject this request because invalid parameters */
624 stat.un.b.lsRjtRsvd0 = 0;
625 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
626 stat.un.b.lsRjtRsnCodeExp = LSEXP_SPARM_OPTIONS;
627 stat.un.b.vendorUnique = 0;
628 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
629
630 /* 1 sec timeout */
631 mod_timer(&ndlp->nlp_delayfunc, jiffies + msecs_to_jiffies(1000));
632
633 spin_lock_irq(shost->host_lock);
634 ndlp->nlp_flag |= NLP_DELAY_TMO;
635 spin_unlock_irq(shost->host_lock);
636 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
637 ndlp->nlp_prev_state = ndlp->nlp_state;
638 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
639 return 0;
640}
641
642static int
643lpfc_rcv_logo(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
644 struct lpfc_iocbq *cmdiocb, uint32_t els_cmd)
645{
646 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
647 struct lpfc_hba *phba = vport->phba;
648 struct lpfc_vport **vports;
649 int i, active_vlink_present = 0 ;
650
651 /* Put ndlp in NPR state with 1 sec timeout for plogi, ACC logo */
652 /* Only call LOGO ACC for first LOGO, this avoids sending unnecessary
653 * PLOGIs during LOGO storms from a device.
654 */
655 spin_lock_irq(shost->host_lock);
656 ndlp->nlp_flag |= NLP_LOGO_ACC;
657 spin_unlock_irq(shost->host_lock);
658 if (els_cmd == ELS_CMD_PRLO)
659 lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
660 else
661 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
662 if (ndlp->nlp_DID == Fabric_DID) {
663 if (vport->port_state <= LPFC_FDISC)
664 goto out;
665 lpfc_linkdown_port(vport);
666 spin_lock_irq(shost->host_lock);
667 vport->fc_flag |= FC_VPORT_LOGO_RCVD;
668 spin_unlock_irq(shost->host_lock);
669 vports = lpfc_create_vport_work_array(phba);
670 if (vports) {
671 for (i = 0; i <= phba->max_vports && vports[i] != NULL;
672 i++) {
673 if ((!(vports[i]->fc_flag &
674 FC_VPORT_LOGO_RCVD)) &&
675 (vports[i]->port_state > LPFC_FDISC)) {
676 active_vlink_present = 1;
677 break;
678 }
679 }
680 lpfc_destroy_vport_work_array(phba, vports);
681 }
682
683 /*
684 * Don't re-instantiate if vport is marked for deletion.
685 * If we are here first then vport_delete is going to wait
686 * for discovery to complete.
687 */
688 if (!(vport->load_flag & FC_UNLOADING) &&
689 active_vlink_present) {
690 /*
691 * If there are other active VLinks present,
692 * re-instantiate the Vlink using FDISC.
693 */
694 mod_timer(&ndlp->nlp_delayfunc,
695 jiffies + msecs_to_jiffies(1000));
696 spin_lock_irq(shost->host_lock);
697 ndlp->nlp_flag |= NLP_DELAY_TMO;
698 spin_unlock_irq(shost->host_lock);
699 ndlp->nlp_last_elscmd = ELS_CMD_FDISC;
700 vport->port_state = LPFC_FDISC;
701 } else {
702 spin_lock_irq(shost->host_lock);
703 phba->pport->fc_flag &= ~FC_LOGO_RCVD_DID_CHNG;
704 spin_unlock_irq(shost->host_lock);
705 lpfc_retry_pport_discovery(phba);
706 }
707 } else if ((!(ndlp->nlp_type & NLP_FABRIC) &&
708 ((ndlp->nlp_type & NLP_FCP_TARGET) ||
709 !(ndlp->nlp_type & NLP_FCP_INITIATOR))) ||
710 (ndlp->nlp_state == NLP_STE_ADISC_ISSUE)) {
711 /* Only try to re-login if this is NOT a Fabric Node */
712 mod_timer(&ndlp->nlp_delayfunc,
713 jiffies + msecs_to_jiffies(1000 * 1));
714 spin_lock_irq(shost->host_lock);
715 ndlp->nlp_flag |= NLP_DELAY_TMO;
716 spin_unlock_irq(shost->host_lock);
717
718 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
719 }
720out:
721 ndlp->nlp_prev_state = ndlp->nlp_state;
722 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
723
724 spin_lock_irq(shost->host_lock);
725 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
726 spin_unlock_irq(shost->host_lock);
727 /* The driver has to wait until the ACC completes before it continues
728 * processing the LOGO. The action will resume in
729 * lpfc_cmpl_els_logo_acc routine. Since part of processing includes an
730 * unreg_login, the driver waits so the ACC does not get aborted.
731 */
732 return 0;
733}
734
735static uint32_t
736lpfc_rcv_prli_support_check(struct lpfc_vport *vport,
737 struct lpfc_nodelist *ndlp,
738 struct lpfc_iocbq *cmdiocb)
739{
740 struct ls_rjt stat;
741 uint32_t *payload;
742 uint32_t cmd;
743
744 payload = ((struct lpfc_dmabuf *)cmdiocb->context2)->virt;
745 cmd = *payload;
746 if (vport->phba->nvmet_support) {
747 /* Must be a NVME PRLI */
748 if (cmd == ELS_CMD_PRLI)
749 goto out;
750 } else {
751 /* Initiator mode. */
752 if (!vport->nvmei_support && (cmd == ELS_CMD_NVMEPRLI))
753 goto out;
754 }
755 return 1;
756out:
757 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NVME_DISC,
758 "6115 Rcv PRLI (%x) check failed: ndlp rpi %d "
759 "state x%x flags x%x\n",
760 cmd, ndlp->nlp_rpi, ndlp->nlp_state,
761 ndlp->nlp_flag);
762 memset(&stat, 0, sizeof(struct ls_rjt));
763 stat.un.b.lsRjtRsnCode = LSRJT_CMD_UNSUPPORTED;
764 stat.un.b.lsRjtRsnCodeExp = LSEXP_REQ_UNSUPPORTED;
765 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb,
766 ndlp, NULL);
767 return 0;
768}
769
770static void
771lpfc_rcv_prli(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
772 struct lpfc_iocbq *cmdiocb)
773{
774 struct lpfc_hba *phba = vport->phba;
775 struct lpfc_dmabuf *pcmd;
776 uint32_t *lp;
777 PRLI *npr;
778 struct fc_rport *rport = ndlp->rport;
779 u32 roles;
780
781 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
782 lp = (uint32_t *) pcmd->virt;
783 npr = (PRLI *) ((uint8_t *) lp + sizeof (uint32_t));
784
785 if ((npr->prliType == PRLI_FCP_TYPE) ||
786 (npr->prliType == PRLI_NVME_TYPE)) {
787 if (npr->initiatorFunc) {
788 if (npr->prliType == PRLI_FCP_TYPE)
789 ndlp->nlp_type |= NLP_FCP_INITIATOR;
790 if (npr->prliType == PRLI_NVME_TYPE)
791 ndlp->nlp_type |= NLP_NVME_INITIATOR;
792 }
793 if (npr->targetFunc) {
794 if (npr->prliType == PRLI_FCP_TYPE)
795 ndlp->nlp_type |= NLP_FCP_TARGET;
796 if (npr->prliType == PRLI_NVME_TYPE)
797 ndlp->nlp_type |= NLP_NVME_TARGET;
798 if (npr->writeXferRdyDis)
799 ndlp->nlp_flag |= NLP_FIRSTBURST;
800 }
801 if (npr->Retry)
802 ndlp->nlp_fcp_info |= NLP_FCP_2_DEVICE;
803
804 /* If this driver is in nvme target mode, set the ndlp's fc4
805 * type to NVME provided the PRLI response claims NVME FC4
806 * type. Target mode does not issue gft_id so doesn't get
807 * the fc4 type set until now.
808 */
809 if (phba->nvmet_support && (npr->prliType == PRLI_NVME_TYPE)) {
810 ndlp->nlp_fc4_type |= NLP_FC4_NVME;
811 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
812 }
813 if (npr->prliType == PRLI_FCP_TYPE)
814 ndlp->nlp_fc4_type |= NLP_FC4_FCP;
815 }
816 if (rport) {
817 /* We need to update the rport role values */
818 roles = FC_RPORT_ROLE_UNKNOWN;
819 if (ndlp->nlp_type & NLP_FCP_INITIATOR)
820 roles |= FC_RPORT_ROLE_FCP_INITIATOR;
821 if (ndlp->nlp_type & NLP_FCP_TARGET)
822 roles |= FC_RPORT_ROLE_FCP_TARGET;
823
824 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
825 "rport rolechg: role:x%x did:x%x flg:x%x",
826 roles, ndlp->nlp_DID, ndlp->nlp_flag);
827
828 if (phba->cfg_enable_fc4_type != LPFC_ENABLE_NVME)
829 fc_remote_port_rolechg(rport, roles);
830 }
831}
832
833static uint32_t
834lpfc_disc_set_adisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
835{
836 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
837
838 if (!(ndlp->nlp_flag & NLP_RPI_REGISTERED)) {
839 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
840 return 0;
841 }
842
843 if (!(vport->fc_flag & FC_PT2PT)) {
844 /* Check config parameter use-adisc or FCP-2 */
845 if ((vport->cfg_use_adisc && (vport->fc_flag & FC_RSCN_MODE)) ||
846 ((ndlp->nlp_fcp_info & NLP_FCP_2_DEVICE) &&
847 (ndlp->nlp_type & NLP_FCP_TARGET))) {
848 spin_lock_irq(shost->host_lock);
849 ndlp->nlp_flag |= NLP_NPR_ADISC;
850 spin_unlock_irq(shost->host_lock);
851 return 1;
852 }
853 }
854 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
855 lpfc_unreg_rpi(vport, ndlp);
856 return 0;
857}
858
859/**
860 * lpfc_release_rpi - Release a RPI by issuing unreg_login mailbox cmd.
861 * @phba : Pointer to lpfc_hba structure.
862 * @vport: Pointer to lpfc_vport structure.
863 * @rpi : rpi to be release.
864 *
865 * This function will send a unreg_login mailbox command to the firmware
866 * to release a rpi.
867 **/
868void
869lpfc_release_rpi(struct lpfc_hba *phba,
870 struct lpfc_vport *vport,
871 uint16_t rpi)
872{
873 LPFC_MBOXQ_t *pmb;
874 int rc;
875
876 pmb = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool,
877 GFP_KERNEL);
878 if (!pmb)
879 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
880 "2796 mailbox memory allocation failed \n");
881 else {
882 lpfc_unreg_login(phba, vport->vpi, rpi, pmb);
883 pmb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
884 rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);
885 if (rc == MBX_NOT_FINISHED)
886 mempool_free(pmb, phba->mbox_mem_pool);
887 }
888}
889
890static uint32_t
891lpfc_disc_illegal(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
892 void *arg, uint32_t evt)
893{
894 struct lpfc_hba *phba;
895 LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg;
896 uint16_t rpi;
897
898 phba = vport->phba;
899 /* Release the RPI if reglogin completing */
900 if (!(phba->pport->load_flag & FC_UNLOADING) &&
901 (evt == NLP_EVT_CMPL_REG_LOGIN) &&
902 (!pmb->u.mb.mbxStatus)) {
903 rpi = pmb->u.mb.un.varWords[0];
904 lpfc_release_rpi(phba, vport, rpi);
905 }
906 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
907 "0271 Illegal State Transition: node x%x "
908 "event x%x, state x%x Data: x%x x%x\n",
909 ndlp->nlp_DID, evt, ndlp->nlp_state, ndlp->nlp_rpi,
910 ndlp->nlp_flag);
911 return ndlp->nlp_state;
912}
913
914static uint32_t
915lpfc_cmpl_plogi_illegal(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
916 void *arg, uint32_t evt)
917{
918 /* This transition is only legal if we previously
919 * rcv'ed a PLOGI. Since we don't want 2 discovery threads
920 * working on the same NPortID, do nothing for this thread
921 * to stop it.
922 */
923 if (!(ndlp->nlp_flag & NLP_RCV_PLOGI)) {
924 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
925 "0272 Illegal State Transition: node x%x "
926 "event x%x, state x%x Data: x%x x%x\n",
927 ndlp->nlp_DID, evt, ndlp->nlp_state, ndlp->nlp_rpi,
928 ndlp->nlp_flag);
929 }
930 return ndlp->nlp_state;
931}
932
933/* Start of Discovery State Machine routines */
934
935static uint32_t
936lpfc_rcv_plogi_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
937 void *arg, uint32_t evt)
938{
939 struct lpfc_iocbq *cmdiocb;
940
941 cmdiocb = (struct lpfc_iocbq *) arg;
942
943 if (lpfc_rcv_plogi(vport, ndlp, cmdiocb)) {
944 return ndlp->nlp_state;
945 }
946 return NLP_STE_FREED_NODE;
947}
948
949static uint32_t
950lpfc_rcv_els_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
951 void *arg, uint32_t evt)
952{
953 lpfc_issue_els_logo(vport, ndlp, 0);
954 return ndlp->nlp_state;
955}
956
957static uint32_t
958lpfc_rcv_logo_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
959 void *arg, uint32_t evt)
960{
961 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
962 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
963
964 spin_lock_irq(shost->host_lock);
965 ndlp->nlp_flag |= NLP_LOGO_ACC;
966 spin_unlock_irq(shost->host_lock);
967 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
968
969 return ndlp->nlp_state;
970}
971
972static uint32_t
973lpfc_cmpl_logo_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
974 void *arg, uint32_t evt)
975{
976 return NLP_STE_FREED_NODE;
977}
978
979static uint32_t
980lpfc_device_rm_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
981 void *arg, uint32_t evt)
982{
983 return NLP_STE_FREED_NODE;
984}
985
986static uint32_t
987lpfc_device_recov_unused_node(struct lpfc_vport *vport,
988 struct lpfc_nodelist *ndlp,
989 void *arg, uint32_t evt)
990{
991 return ndlp->nlp_state;
992}
993
994static uint32_t
995lpfc_rcv_plogi_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
996 void *arg, uint32_t evt)
997{
998 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
999 struct lpfc_hba *phba = vport->phba;
1000 struct lpfc_iocbq *cmdiocb = arg;
1001 struct lpfc_dmabuf *pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
1002 uint32_t *lp = (uint32_t *) pcmd->virt;
1003 struct serv_parm *sp = (struct serv_parm *) (lp + 1);
1004 struct ls_rjt stat;
1005 int port_cmp;
1006
1007 memset(&stat, 0, sizeof (struct ls_rjt));
1008
1009 /* For a PLOGI, we only accept if our portname is less
1010 * than the remote portname.
1011 */
1012 phba->fc_stat.elsLogiCol++;
1013 port_cmp = memcmp(&vport->fc_portname, &sp->portName,
1014 sizeof(struct lpfc_name));
1015
1016 if (port_cmp >= 0) {
1017 /* Reject this request because the remote node will accept
1018 ours */
1019 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
1020 stat.un.b.lsRjtRsnCodeExp = LSEXP_CMD_IN_PROGRESS;
1021 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
1022 NULL);
1023 } else {
1024 if (lpfc_rcv_plogi(vport, ndlp, cmdiocb) &&
1025 (ndlp->nlp_flag & NLP_NPR_2B_DISC) &&
1026 (vport->num_disc_nodes)) {
1027 spin_lock_irq(shost->host_lock);
1028 ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
1029 spin_unlock_irq(shost->host_lock);
1030 /* Check if there are more PLOGIs to be sent */
1031 lpfc_more_plogi(vport);
1032 if (vport->num_disc_nodes == 0) {
1033 spin_lock_irq(shost->host_lock);
1034 vport->fc_flag &= ~FC_NDISC_ACTIVE;
1035 spin_unlock_irq(shost->host_lock);
1036 lpfc_can_disctmo(vport);
1037 lpfc_end_rscn(vport);
1038 }
1039 }
1040 } /* If our portname was less */
1041
1042 return ndlp->nlp_state;
1043}
1044
1045static uint32_t
1046lpfc_rcv_prli_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1047 void *arg, uint32_t evt)
1048{
1049 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1050 struct ls_rjt stat;
1051
1052 memset(&stat, 0, sizeof (struct ls_rjt));
1053 stat.un.b.lsRjtRsnCode = LSRJT_LOGICAL_BSY;
1054 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
1055 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
1056 return ndlp->nlp_state;
1057}
1058
1059static uint32_t
1060lpfc_rcv_logo_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1061 void *arg, uint32_t evt)
1062{
1063 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1064
1065 /* Retrieve RPI from LOGO IOCB. RPI is used for CMD_ABORT_XRI_CN */
1066 if (vport->phba->sli_rev == LPFC_SLI_REV3)
1067 ndlp->nlp_rpi = cmdiocb->iocb.ulpIoTag;
1068 /* software abort outstanding PLOGI */
1069 lpfc_els_abort(vport->phba, ndlp);
1070
1071 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1072 return ndlp->nlp_state;
1073}
1074
1075static uint32_t
1076lpfc_rcv_els_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1077 void *arg, uint32_t evt)
1078{
1079 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1080 struct lpfc_hba *phba = vport->phba;
1081 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1082
1083 /* software abort outstanding PLOGI */
1084 lpfc_els_abort(phba, ndlp);
1085
1086 if (evt == NLP_EVT_RCV_LOGO) {
1087 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
1088 } else {
1089 lpfc_issue_els_logo(vport, ndlp, 0);
1090 }
1091
1092 /* Put ndlp in npr state set plogi timer for 1 sec */
1093 mod_timer(&ndlp->nlp_delayfunc, jiffies + msecs_to_jiffies(1000 * 1));
1094 spin_lock_irq(shost->host_lock);
1095 ndlp->nlp_flag |= NLP_DELAY_TMO;
1096 spin_unlock_irq(shost->host_lock);
1097 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
1098 ndlp->nlp_prev_state = NLP_STE_PLOGI_ISSUE;
1099 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1100
1101 return ndlp->nlp_state;
1102}
1103
1104static uint32_t
1105lpfc_cmpl_plogi_plogi_issue(struct lpfc_vport *vport,
1106 struct lpfc_nodelist *ndlp,
1107 void *arg,
1108 uint32_t evt)
1109{
1110 struct lpfc_hba *phba = vport->phba;
1111 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1112 struct lpfc_iocbq *cmdiocb, *rspiocb;
1113 struct lpfc_dmabuf *pcmd, *prsp, *mp;
1114 uint32_t *lp;
1115 uint32_t vid, flag;
1116 IOCB_t *irsp;
1117 struct serv_parm *sp;
1118 uint32_t ed_tov;
1119 LPFC_MBOXQ_t *mbox;
1120 int rc;
1121
1122 cmdiocb = (struct lpfc_iocbq *) arg;
1123 rspiocb = cmdiocb->context_un.rsp_iocb;
1124
1125 if (ndlp->nlp_flag & NLP_ACC_REGLOGIN) {
1126 /* Recovery from PLOGI collision logic */
1127 return ndlp->nlp_state;
1128 }
1129
1130 irsp = &rspiocb->iocb;
1131
1132 if (irsp->ulpStatus)
1133 goto out;
1134
1135 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
1136
1137 prsp = list_get_first(&pcmd->list, struct lpfc_dmabuf, list);
1138 if (!prsp)
1139 goto out;
1140
1141 lp = (uint32_t *) prsp->virt;
1142 sp = (struct serv_parm *) ((uint8_t *) lp + sizeof (uint32_t));
1143
1144 /* Some switches have FDMI servers returning 0 for WWN */
1145 if ((ndlp->nlp_DID != FDMI_DID) &&
1146 (wwn_to_u64(sp->portName.u.wwn) == 0 ||
1147 wwn_to_u64(sp->nodeName.u.wwn) == 0)) {
1148 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
1149 "0142 PLOGI RSP: Invalid WWN.\n");
1150 goto out;
1151 }
1152 if (!lpfc_check_sparm(vport, ndlp, sp, CLASS3, 0))
1153 goto out;
1154 /* PLOGI chkparm OK */
1155 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
1156 "0121 PLOGI chkparm OK Data: x%x x%x x%x x%x\n",
1157 ndlp->nlp_DID, ndlp->nlp_state,
1158 ndlp->nlp_flag, ndlp->nlp_rpi);
1159 if (vport->cfg_fcp_class == 2 && (sp->cls2.classValid))
1160 ndlp->nlp_fcp_info |= CLASS2;
1161 else
1162 ndlp->nlp_fcp_info |= CLASS3;
1163
1164 ndlp->nlp_class_sup = 0;
1165 if (sp->cls1.classValid)
1166 ndlp->nlp_class_sup |= FC_COS_CLASS1;
1167 if (sp->cls2.classValid)
1168 ndlp->nlp_class_sup |= FC_COS_CLASS2;
1169 if (sp->cls3.classValid)
1170 ndlp->nlp_class_sup |= FC_COS_CLASS3;
1171 if (sp->cls4.classValid)
1172 ndlp->nlp_class_sup |= FC_COS_CLASS4;
1173 ndlp->nlp_maxframe =
1174 ((sp->cmn.bbRcvSizeMsb & 0x0F) << 8) | sp->cmn.bbRcvSizeLsb;
1175
1176 if ((vport->fc_flag & FC_PT2PT) &&
1177 (vport->fc_flag & FC_PT2PT_PLOGI)) {
1178 ed_tov = be32_to_cpu(sp->cmn.e_d_tov);
1179 if (sp->cmn.edtovResolution) {
1180 /* E_D_TOV ticks are in nanoseconds */
1181 ed_tov = (phba->fc_edtov + 999999) / 1000000;
1182 }
1183
1184 ndlp->nlp_flag &= ~NLP_SUPPRESS_RSP;
1185 if ((phba->sli.sli_flag & LPFC_SLI_SUPPRESS_RSP) &&
1186 sp->cmn.valid_vendor_ver_level) {
1187 vid = be32_to_cpu(sp->un.vv.vid);
1188 flag = be32_to_cpu(sp->un.vv.flags);
1189 if ((vid == LPFC_VV_EMLX_ID) &&
1190 (flag & LPFC_VV_SUPPRESS_RSP))
1191 ndlp->nlp_flag |= NLP_SUPPRESS_RSP;
1192 }
1193
1194 /*
1195 * Use the larger EDTOV
1196 * RATOV = 2 * EDTOV for pt-to-pt
1197 */
1198 if (ed_tov > phba->fc_edtov)
1199 phba->fc_edtov = ed_tov;
1200 phba->fc_ratov = (2 * phba->fc_edtov) / 1000;
1201
1202 memcpy(&phba->fc_fabparam, sp, sizeof(struct serv_parm));
1203
1204 /* Issue config_link / reg_vfi to account for updated TOV's */
1205 if (phba->sli_rev == LPFC_SLI_REV4) {
1206 lpfc_issue_reg_vfi(vport);
1207 } else {
1208 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1209 if (!mbox) {
1210 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
1211 "0133 PLOGI: no memory "
1212 "for config_link "
1213 "Data: x%x x%x x%x x%x\n",
1214 ndlp->nlp_DID, ndlp->nlp_state,
1215 ndlp->nlp_flag, ndlp->nlp_rpi);
1216 goto out;
1217 }
1218
1219 lpfc_config_link(phba, mbox);
1220
1221 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
1222 mbox->vport = vport;
1223 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
1224 if (rc == MBX_NOT_FINISHED) {
1225 mempool_free(mbox, phba->mbox_mem_pool);
1226 goto out;
1227 }
1228 }
1229 }
1230
1231 lpfc_unreg_rpi(vport, ndlp);
1232
1233 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1234 if (!mbox) {
1235 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
1236 "0018 PLOGI: no memory for reg_login "
1237 "Data: x%x x%x x%x x%x\n",
1238 ndlp->nlp_DID, ndlp->nlp_state,
1239 ndlp->nlp_flag, ndlp->nlp_rpi);
1240 goto out;
1241 }
1242
1243 if (lpfc_reg_rpi(phba, vport->vpi, irsp->un.elsreq64.remoteID,
1244 (uint8_t *) sp, mbox, ndlp->nlp_rpi) == 0) {
1245 switch (ndlp->nlp_DID) {
1246 case NameServer_DID:
1247 mbox->mbox_cmpl = lpfc_mbx_cmpl_ns_reg_login;
1248 break;
1249 case FDMI_DID:
1250 mbox->mbox_cmpl = lpfc_mbx_cmpl_fdmi_reg_login;
1251 break;
1252 default:
1253 ndlp->nlp_flag |= NLP_REG_LOGIN_SEND;
1254 mbox->mbox_cmpl = lpfc_mbx_cmpl_reg_login;
1255 }
1256 mbox->context2 = lpfc_nlp_get(ndlp);
1257 mbox->vport = vport;
1258 if (lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT)
1259 != MBX_NOT_FINISHED) {
1260 lpfc_nlp_set_state(vport, ndlp,
1261 NLP_STE_REG_LOGIN_ISSUE);
1262 return ndlp->nlp_state;
1263 }
1264 if (ndlp->nlp_flag & NLP_REG_LOGIN_SEND)
1265 ndlp->nlp_flag &= ~NLP_REG_LOGIN_SEND;
1266 /* decrement node reference count to the failed mbox
1267 * command
1268 */
1269 lpfc_nlp_put(ndlp);
1270 mp = (struct lpfc_dmabuf *) mbox->context1;
1271 lpfc_mbuf_free(phba, mp->virt, mp->phys);
1272 kfree(mp);
1273 mempool_free(mbox, phba->mbox_mem_pool);
1274
1275 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
1276 "0134 PLOGI: cannot issue reg_login "
1277 "Data: x%x x%x x%x x%x\n",
1278 ndlp->nlp_DID, ndlp->nlp_state,
1279 ndlp->nlp_flag, ndlp->nlp_rpi);
1280 } else {
1281 mempool_free(mbox, phba->mbox_mem_pool);
1282
1283 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
1284 "0135 PLOGI: cannot format reg_login "
1285 "Data: x%x x%x x%x x%x\n",
1286 ndlp->nlp_DID, ndlp->nlp_state,
1287 ndlp->nlp_flag, ndlp->nlp_rpi);
1288 }
1289
1290
1291out:
1292 if (ndlp->nlp_DID == NameServer_DID) {
1293 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
1294 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
1295 "0261 Cannot Register NameServer login\n");
1296 }
1297
1298 /*
1299 ** In case the node reference counter does not go to zero, ensure that
1300 ** the stale state for the node is not processed.
1301 */
1302
1303 ndlp->nlp_prev_state = ndlp->nlp_state;
1304 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1305 spin_lock_irq(shost->host_lock);
1306 ndlp->nlp_flag |= NLP_DEFER_RM;
1307 spin_unlock_irq(shost->host_lock);
1308 return NLP_STE_FREED_NODE;
1309}
1310
1311static uint32_t
1312lpfc_cmpl_logo_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1313 void *arg, uint32_t evt)
1314{
1315 return ndlp->nlp_state;
1316}
1317
1318static uint32_t
1319lpfc_cmpl_reglogin_plogi_issue(struct lpfc_vport *vport,
1320 struct lpfc_nodelist *ndlp, void *arg, uint32_t evt)
1321{
1322 struct lpfc_hba *phba;
1323 LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg;
1324 MAILBOX_t *mb = &pmb->u.mb;
1325 uint16_t rpi;
1326
1327 phba = vport->phba;
1328 /* Release the RPI */
1329 if (!(phba->pport->load_flag & FC_UNLOADING) &&
1330 !mb->mbxStatus) {
1331 rpi = pmb->u.mb.un.varWords[0];
1332 lpfc_release_rpi(phba, vport, rpi);
1333 }
1334 return ndlp->nlp_state;
1335}
1336
1337static uint32_t
1338lpfc_device_rm_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1339 void *arg, uint32_t evt)
1340{
1341 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1342
1343 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1344 spin_lock_irq(shost->host_lock);
1345 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1346 spin_unlock_irq(shost->host_lock);
1347 return ndlp->nlp_state;
1348 } else {
1349 /* software abort outstanding PLOGI */
1350 lpfc_els_abort(vport->phba, ndlp);
1351
1352 lpfc_drop_node(vport, ndlp);
1353 return NLP_STE_FREED_NODE;
1354 }
1355}
1356
1357static uint32_t
1358lpfc_device_recov_plogi_issue(struct lpfc_vport *vport,
1359 struct lpfc_nodelist *ndlp,
1360 void *arg,
1361 uint32_t evt)
1362{
1363 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1364 struct lpfc_hba *phba = vport->phba;
1365
1366 /* Don't do anything that will mess up processing of the
1367 * previous RSCN.
1368 */
1369 if (vport->fc_flag & FC_RSCN_DEFERRED)
1370 return ndlp->nlp_state;
1371
1372 /* software abort outstanding PLOGI */
1373 lpfc_els_abort(phba, ndlp);
1374
1375 ndlp->nlp_prev_state = NLP_STE_PLOGI_ISSUE;
1376 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1377 spin_lock_irq(shost->host_lock);
1378 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1379 spin_unlock_irq(shost->host_lock);
1380
1381 return ndlp->nlp_state;
1382}
1383
1384static uint32_t
1385lpfc_rcv_plogi_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1386 void *arg, uint32_t evt)
1387{
1388 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1389 struct lpfc_hba *phba = vport->phba;
1390 struct lpfc_iocbq *cmdiocb;
1391
1392 /* software abort outstanding ADISC */
1393 lpfc_els_abort(phba, ndlp);
1394
1395 cmdiocb = (struct lpfc_iocbq *) arg;
1396
1397 if (lpfc_rcv_plogi(vport, ndlp, cmdiocb)) {
1398 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1399 spin_lock_irq(shost->host_lock);
1400 ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
1401 spin_unlock_irq(shost->host_lock);
1402 if (vport->num_disc_nodes)
1403 lpfc_more_adisc(vport);
1404 }
1405 return ndlp->nlp_state;
1406 }
1407 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1408 lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
1409 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
1410
1411 return ndlp->nlp_state;
1412}
1413
1414static uint32_t
1415lpfc_rcv_prli_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1416 void *arg, uint32_t evt)
1417{
1418 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1419
1420 if (lpfc_rcv_prli_support_check(vport, ndlp, cmdiocb))
1421 lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1422 return ndlp->nlp_state;
1423}
1424
1425static uint32_t
1426lpfc_rcv_logo_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1427 void *arg, uint32_t evt)
1428{
1429 struct lpfc_hba *phba = vport->phba;
1430 struct lpfc_iocbq *cmdiocb;
1431
1432 cmdiocb = (struct lpfc_iocbq *) arg;
1433
1434 /* software abort outstanding ADISC */
1435 lpfc_els_abort(phba, ndlp);
1436
1437 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1438 return ndlp->nlp_state;
1439}
1440
1441static uint32_t
1442lpfc_rcv_padisc_adisc_issue(struct lpfc_vport *vport,
1443 struct lpfc_nodelist *ndlp,
1444 void *arg, uint32_t evt)
1445{
1446 struct lpfc_iocbq *cmdiocb;
1447
1448 cmdiocb = (struct lpfc_iocbq *) arg;
1449
1450 lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1451 return ndlp->nlp_state;
1452}
1453
1454static uint32_t
1455lpfc_rcv_prlo_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1456 void *arg, uint32_t evt)
1457{
1458 struct lpfc_iocbq *cmdiocb;
1459
1460 cmdiocb = (struct lpfc_iocbq *) arg;
1461
1462 /* Treat like rcv logo */
1463 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_PRLO);
1464 return ndlp->nlp_state;
1465}
1466
1467static uint32_t
1468lpfc_cmpl_adisc_adisc_issue(struct lpfc_vport *vport,
1469 struct lpfc_nodelist *ndlp,
1470 void *arg, uint32_t evt)
1471{
1472 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1473 struct lpfc_hba *phba = vport->phba;
1474 struct lpfc_iocbq *cmdiocb, *rspiocb;
1475 IOCB_t *irsp;
1476 ADISC *ap;
1477 int rc;
1478
1479 cmdiocb = (struct lpfc_iocbq *) arg;
1480 rspiocb = cmdiocb->context_un.rsp_iocb;
1481
1482 ap = (ADISC *)lpfc_check_elscmpl_iocb(phba, cmdiocb, rspiocb);
1483 irsp = &rspiocb->iocb;
1484
1485 if ((irsp->ulpStatus) ||
1486 (!lpfc_check_adisc(vport, ndlp, &ap->nodeName, &ap->portName))) {
1487 /* 1 sec timeout */
1488 mod_timer(&ndlp->nlp_delayfunc,
1489 jiffies + msecs_to_jiffies(1000));
1490 spin_lock_irq(shost->host_lock);
1491 ndlp->nlp_flag |= NLP_DELAY_TMO;
1492 spin_unlock_irq(shost->host_lock);
1493 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
1494
1495 memset(&ndlp->nlp_nodename, 0, sizeof(struct lpfc_name));
1496 memset(&ndlp->nlp_portname, 0, sizeof(struct lpfc_name));
1497
1498 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1499 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1500 lpfc_unreg_rpi(vport, ndlp);
1501 return ndlp->nlp_state;
1502 }
1503
1504 if (phba->sli_rev == LPFC_SLI_REV4) {
1505 rc = lpfc_sli4_resume_rpi(ndlp, NULL, NULL);
1506 if (rc) {
1507 /* Stay in state and retry. */
1508 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1509 return ndlp->nlp_state;
1510 }
1511 }
1512
1513 if (ndlp->nlp_type & NLP_FCP_TARGET) {
1514 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1515 lpfc_nlp_set_state(vport, ndlp, NLP_STE_MAPPED_NODE);
1516 } else {
1517 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1518 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1519 }
1520
1521 return ndlp->nlp_state;
1522}
1523
1524static uint32_t
1525lpfc_device_rm_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1526 void *arg, uint32_t evt)
1527{
1528 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1529
1530 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1531 spin_lock_irq(shost->host_lock);
1532 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1533 spin_unlock_irq(shost->host_lock);
1534 return ndlp->nlp_state;
1535 } else {
1536 /* software abort outstanding ADISC */
1537 lpfc_els_abort(vport->phba, ndlp);
1538
1539 lpfc_drop_node(vport, ndlp);
1540 return NLP_STE_FREED_NODE;
1541 }
1542}
1543
1544static uint32_t
1545lpfc_device_recov_adisc_issue(struct lpfc_vport *vport,
1546 struct lpfc_nodelist *ndlp,
1547 void *arg,
1548 uint32_t evt)
1549{
1550 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1551 struct lpfc_hba *phba = vport->phba;
1552
1553 /* Don't do anything that will mess up processing of the
1554 * previous RSCN.
1555 */
1556 if (vport->fc_flag & FC_RSCN_DEFERRED)
1557 return ndlp->nlp_state;
1558
1559 /* software abort outstanding ADISC */
1560 lpfc_els_abort(phba, ndlp);
1561
1562 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1563 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1564 spin_lock_irq(shost->host_lock);
1565 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1566 spin_unlock_irq(shost->host_lock);
1567 lpfc_disc_set_adisc(vport, ndlp);
1568 return ndlp->nlp_state;
1569}
1570
1571static uint32_t
1572lpfc_rcv_plogi_reglogin_issue(struct lpfc_vport *vport,
1573 struct lpfc_nodelist *ndlp,
1574 void *arg,
1575 uint32_t evt)
1576{
1577 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1578
1579 lpfc_rcv_plogi(vport, ndlp, cmdiocb);
1580 return ndlp->nlp_state;
1581}
1582
1583static uint32_t
1584lpfc_rcv_prli_reglogin_issue(struct lpfc_vport *vport,
1585 struct lpfc_nodelist *ndlp,
1586 void *arg,
1587 uint32_t evt)
1588{
1589 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1590 struct ls_rjt stat;
1591
1592 if (!lpfc_rcv_prli_support_check(vport, ndlp, cmdiocb)) {
1593 return ndlp->nlp_state;
1594 }
1595 if (vport->phba->nvmet_support) {
1596 /* NVME Target mode. Handle and respond to the PRLI and
1597 * transition to UNMAPPED provided the RPI has completed
1598 * registration.
1599 */
1600 if (ndlp->nlp_flag & NLP_RPI_REGISTERED) {
1601 lpfc_rcv_prli(vport, ndlp, cmdiocb);
1602 lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1603 } else {
1604 /* RPI registration has not completed. Reject the PRLI
1605 * to prevent an illegal state transition when the
1606 * rpi registration does complete.
1607 */
1608 memset(&stat, 0, sizeof(struct ls_rjt));
1609 stat.un.b.lsRjtRsnCode = LSRJT_LOGICAL_BSY;
1610 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
1611 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb,
1612 ndlp, NULL);
1613 return ndlp->nlp_state;
1614 }
1615 } else {
1616 /* Initiator mode. */
1617 lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1618 }
1619 return ndlp->nlp_state;
1620}
1621
1622static uint32_t
1623lpfc_rcv_logo_reglogin_issue(struct lpfc_vport *vport,
1624 struct lpfc_nodelist *ndlp,
1625 void *arg,
1626 uint32_t evt)
1627{
1628 struct lpfc_hba *phba = vport->phba;
1629 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1630 LPFC_MBOXQ_t *mb;
1631 LPFC_MBOXQ_t *nextmb;
1632 struct lpfc_dmabuf *mp;
1633
1634 cmdiocb = (struct lpfc_iocbq *) arg;
1635
1636 /* cleanup any ndlp on mbox q waiting for reglogin cmpl */
1637 if ((mb = phba->sli.mbox_active)) {
1638 if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) &&
1639 (ndlp == (struct lpfc_nodelist *) mb->context2)) {
1640 ndlp->nlp_flag &= ~NLP_REG_LOGIN_SEND;
1641 lpfc_nlp_put(ndlp);
1642 mb->context2 = NULL;
1643 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
1644 }
1645 }
1646
1647 spin_lock_irq(&phba->hbalock);
1648 list_for_each_entry_safe(mb, nextmb, &phba->sli.mboxq, list) {
1649 if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) &&
1650 (ndlp == (struct lpfc_nodelist *) mb->context2)) {
1651 mp = (struct lpfc_dmabuf *) (mb->context1);
1652 if (mp) {
1653 __lpfc_mbuf_free(phba, mp->virt, mp->phys);
1654 kfree(mp);
1655 }
1656 ndlp->nlp_flag &= ~NLP_REG_LOGIN_SEND;
1657 lpfc_nlp_put(ndlp);
1658 list_del(&mb->list);
1659 phba->sli.mboxq_cnt--;
1660 mempool_free(mb, phba->mbox_mem_pool);
1661 }
1662 }
1663 spin_unlock_irq(&phba->hbalock);
1664
1665 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1666 return ndlp->nlp_state;
1667}
1668
1669static uint32_t
1670lpfc_rcv_padisc_reglogin_issue(struct lpfc_vport *vport,
1671 struct lpfc_nodelist *ndlp,
1672 void *arg,
1673 uint32_t evt)
1674{
1675 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1676
1677 lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1678 return ndlp->nlp_state;
1679}
1680
1681static uint32_t
1682lpfc_rcv_prlo_reglogin_issue(struct lpfc_vport *vport,
1683 struct lpfc_nodelist *ndlp,
1684 void *arg,
1685 uint32_t evt)
1686{
1687 struct lpfc_iocbq *cmdiocb;
1688
1689 cmdiocb = (struct lpfc_iocbq *) arg;
1690 lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
1691 return ndlp->nlp_state;
1692}
1693
1694static uint32_t
1695lpfc_cmpl_reglogin_reglogin_issue(struct lpfc_vport *vport,
1696 struct lpfc_nodelist *ndlp,
1697 void *arg,
1698 uint32_t evt)
1699{
1700 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1701 struct lpfc_hba *phba = vport->phba;
1702 LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg;
1703 MAILBOX_t *mb = &pmb->u.mb;
1704 uint32_t did = mb->un.varWords[1];
1705 int rc = 0;
1706
1707 if (mb->mbxStatus) {
1708 /* RegLogin failed */
1709 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
1710 "0246 RegLogin failed Data: x%x x%x x%x x%x "
1711 "x%x\n",
1712 did, mb->mbxStatus, vport->port_state,
1713 mb->un.varRegLogin.vpi,
1714 mb->un.varRegLogin.rpi);
1715 /*
1716 * If RegLogin failed due to lack of HBA resources do not
1717 * retry discovery.
1718 */
1719 if (mb->mbxStatus == MBXERR_RPI_FULL) {
1720 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1721 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1722 return ndlp->nlp_state;
1723 }
1724
1725 /* Put ndlp in npr state set plogi timer for 1 sec */
1726 mod_timer(&ndlp->nlp_delayfunc,
1727 jiffies + msecs_to_jiffies(1000 * 1));
1728 spin_lock_irq(shost->host_lock);
1729 ndlp->nlp_flag |= NLP_DELAY_TMO;
1730 spin_unlock_irq(shost->host_lock);
1731 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
1732
1733 lpfc_issue_els_logo(vport, ndlp, 0);
1734 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1735 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1736 return ndlp->nlp_state;
1737 }
1738
1739 /* SLI4 ports have preallocated logical rpis. */
1740 if (phba->sli_rev < LPFC_SLI_REV4)
1741 ndlp->nlp_rpi = mb->un.varWords[0];
1742
1743 ndlp->nlp_flag |= NLP_RPI_REGISTERED;
1744
1745 /* Only if we are not a fabric nport do we issue PRLI */
1746 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
1747 "3066 RegLogin Complete on x%x x%x x%x\n",
1748 did, ndlp->nlp_type, ndlp->nlp_fc4_type);
1749 if (!(ndlp->nlp_type & NLP_FABRIC) &&
1750 (phba->nvmet_support == 0)) {
1751 /* The driver supports FCP and NVME concurrently. If the
1752 * ndlp's nlp_fc4_type is still zero, the driver doesn't
1753 * know what PRLI to send yet. Figure that out now and
1754 * call PRLI depending on the outcome.
1755 */
1756 if (vport->fc_flag & FC_PT2PT) {
1757 /* If we are pt2pt, there is no Fabric to determine
1758 * the FC4 type of the remote nport. So if NVME
1759 * is configured try it.
1760 */
1761 ndlp->nlp_fc4_type |= NLP_FC4_FCP;
1762 if ((phba->cfg_enable_fc4_type == LPFC_ENABLE_BOTH) ||
1763 (phba->cfg_enable_fc4_type == LPFC_ENABLE_NVME)) {
1764 ndlp->nlp_fc4_type |= NLP_FC4_NVME;
1765 /* We need to update the localport also */
1766 lpfc_nvme_update_localport(vport);
1767 }
1768
1769 } else if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
1770 ndlp->nlp_fc4_type |= NLP_FC4_FCP;
1771
1772 } else if (ndlp->nlp_fc4_type == 0) {
1773 rc = lpfc_ns_cmd(vport, SLI_CTNS_GFT_ID,
1774 0, ndlp->nlp_DID);
1775 return ndlp->nlp_state;
1776 }
1777
1778 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1779 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PRLI_ISSUE);
1780 lpfc_issue_els_prli(vport, ndlp, 0);
1781 } else {
1782 if ((vport->fc_flag & FC_PT2PT) && phba->nvmet_support)
1783 phba->targetport->port_id = vport->fc_myDID;
1784
1785 /* Only Fabric ports should transition. NVME target
1786 * must complete PRLI.
1787 */
1788 if (ndlp->nlp_type & NLP_FABRIC) {
1789 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1790 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1791 }
1792 }
1793 return ndlp->nlp_state;
1794}
1795
1796static uint32_t
1797lpfc_device_rm_reglogin_issue(struct lpfc_vport *vport,
1798 struct lpfc_nodelist *ndlp,
1799 void *arg,
1800 uint32_t evt)
1801{
1802 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1803
1804 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1805 spin_lock_irq(shost->host_lock);
1806 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1807 spin_unlock_irq(shost->host_lock);
1808 return ndlp->nlp_state;
1809 } else {
1810 lpfc_drop_node(vport, ndlp);
1811 return NLP_STE_FREED_NODE;
1812 }
1813}
1814
1815static uint32_t
1816lpfc_device_recov_reglogin_issue(struct lpfc_vport *vport,
1817 struct lpfc_nodelist *ndlp,
1818 void *arg,
1819 uint32_t evt)
1820{
1821 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1822
1823 /* Don't do anything that will mess up processing of the
1824 * previous RSCN.
1825 */
1826 if (vport->fc_flag & FC_RSCN_DEFERRED)
1827 return ndlp->nlp_state;
1828
1829 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1830 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1831 spin_lock_irq(shost->host_lock);
1832
1833 /* If we are a target we won't immediately transition into PRLI,
1834 * so if REG_LOGIN already completed we don't need to ignore it.
1835 */
1836 if (!(ndlp->nlp_flag & NLP_RPI_REGISTERED) ||
1837 !vport->phba->nvmet_support)
1838 ndlp->nlp_flag |= NLP_IGNR_REG_CMPL;
1839
1840 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1841 spin_unlock_irq(shost->host_lock);
1842 lpfc_disc_set_adisc(vport, ndlp);
1843 return ndlp->nlp_state;
1844}
1845
1846static uint32_t
1847lpfc_rcv_plogi_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1848 void *arg, uint32_t evt)
1849{
1850 struct lpfc_iocbq *cmdiocb;
1851
1852 cmdiocb = (struct lpfc_iocbq *) arg;
1853
1854 lpfc_rcv_plogi(vport, ndlp, cmdiocb);
1855 return ndlp->nlp_state;
1856}
1857
1858static uint32_t
1859lpfc_rcv_prli_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1860 void *arg, uint32_t evt)
1861{
1862 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1863
1864 if (!lpfc_rcv_prli_support_check(vport, ndlp, cmdiocb))
1865 return ndlp->nlp_state;
1866 lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1867 return ndlp->nlp_state;
1868}
1869
1870static uint32_t
1871lpfc_rcv_logo_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1872 void *arg, uint32_t evt)
1873{
1874 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1875
1876 /* Software abort outstanding PRLI before sending acc */
1877 lpfc_els_abort(vport->phba, ndlp);
1878
1879 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1880 return ndlp->nlp_state;
1881}
1882
1883static uint32_t
1884lpfc_rcv_padisc_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1885 void *arg, uint32_t evt)
1886{
1887 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1888
1889 lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1890 return ndlp->nlp_state;
1891}
1892
1893/* This routine is envoked when we rcv a PRLO request from a nport
1894 * we are logged into. We should send back a PRLO rsp setting the
1895 * appropriate bits.
1896 * NEXT STATE = PRLI_ISSUE
1897 */
1898static uint32_t
1899lpfc_rcv_prlo_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1900 void *arg, uint32_t evt)
1901{
1902 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1903
1904 lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
1905 return ndlp->nlp_state;
1906}
1907
1908static uint32_t
1909lpfc_cmpl_prli_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1910 void *arg, uint32_t evt)
1911{
1912 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1913 struct lpfc_iocbq *cmdiocb, *rspiocb;
1914 struct lpfc_hba *phba = vport->phba;
1915 IOCB_t *irsp;
1916 PRLI *npr;
1917 struct lpfc_nvme_prli *nvpr;
1918 void *temp_ptr;
1919
1920 cmdiocb = (struct lpfc_iocbq *) arg;
1921 rspiocb = cmdiocb->context_un.rsp_iocb;
1922
1923 /* A solicited PRLI is either FCP or NVME. The PRLI cmd/rsp
1924 * format is different so NULL the two PRLI types so that the
1925 * driver correctly gets the correct context.
1926 */
1927 npr = NULL;
1928 nvpr = NULL;
1929 temp_ptr = lpfc_check_elscmpl_iocb(phba, cmdiocb, rspiocb);
1930 if (cmdiocb->iocb_flag & LPFC_PRLI_FCP_REQ)
1931 npr = (PRLI *) temp_ptr;
1932 else if (cmdiocb->iocb_flag & LPFC_PRLI_NVME_REQ)
1933 nvpr = (struct lpfc_nvme_prli *) temp_ptr;
1934
1935 irsp = &rspiocb->iocb;
1936 if (irsp->ulpStatus) {
1937 if ((vport->port_type == LPFC_NPIV_PORT) &&
1938 vport->cfg_restrict_login) {
1939 goto out;
1940 }
1941
1942 /* Adjust the nlp_type accordingly if the PRLI failed */
1943 if (npr)
1944 ndlp->nlp_fc4_type &= ~NLP_FC4_FCP;
1945 if (nvpr)
1946 ndlp->nlp_fc4_type &= ~NLP_FC4_NVME;
1947
1948 /* We can't set the DSM state till BOTH PRLIs complete */
1949 goto out_err;
1950 }
1951
1952 if (npr && (npr->acceptRspCode == PRLI_REQ_EXECUTED) &&
1953 (npr->prliType == PRLI_FCP_TYPE)) {
1954 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_DISC,
1955 "6028 FCP NPR PRLI Cmpl Init %d Target %d\n",
1956 npr->initiatorFunc,
1957 npr->targetFunc);
1958 if (npr->initiatorFunc)
1959 ndlp->nlp_type |= NLP_FCP_INITIATOR;
1960 if (npr->targetFunc) {
1961 ndlp->nlp_type |= NLP_FCP_TARGET;
1962 if (npr->writeXferRdyDis)
1963 ndlp->nlp_flag |= NLP_FIRSTBURST;
1964 }
1965 if (npr->Retry)
1966 ndlp->nlp_fcp_info |= NLP_FCP_2_DEVICE;
1967
1968 } else if (nvpr &&
1969 (bf_get_be32(prli_acc_rsp_code, nvpr) ==
1970 PRLI_REQ_EXECUTED) &&
1971 (bf_get_be32(prli_type_code, nvpr) ==
1972 PRLI_NVME_TYPE)) {
1973
1974 /* Complete setting up the remote ndlp personality. */
1975 if (bf_get_be32(prli_init, nvpr))
1976 ndlp->nlp_type |= NLP_NVME_INITIATOR;
1977
1978 /* Target driver cannot solicit NVME FB. */
1979 if (bf_get_be32(prli_tgt, nvpr)) {
1980 /* Complete the nvme target roles. The transport
1981 * needs to know if the rport is capable of
1982 * discovery in addition to its role.
1983 */
1984 ndlp->nlp_type |= NLP_NVME_TARGET;
1985 if (bf_get_be32(prli_disc, nvpr))
1986 ndlp->nlp_type |= NLP_NVME_DISCOVERY;
1987
1988 /*
1989 * If prli_fba is set, the Target supports FirstBurst.
1990 * If prli_fb_sz is 0, the FirstBurst size is unlimited,
1991 * otherwise it defines the actual size supported by
1992 * the NVME Target.
1993 */
1994 if ((bf_get_be32(prli_fba, nvpr) == 1) &&
1995 (phba->cfg_nvme_enable_fb) &&
1996 (!phba->nvmet_support)) {
1997 /* Both sides support FB. The target's first
1998 * burst size is a 512 byte encoded value.
1999 */
2000 ndlp->nlp_flag |= NLP_FIRSTBURST;
2001 ndlp->nvme_fb_size = bf_get_be32(prli_fb_sz,
2002 nvpr);
2003
2004 /* Expressed in units of 512 bytes */
2005 if (ndlp->nvme_fb_size)
2006 ndlp->nvme_fb_size <<=
2007 LPFC_NVME_FB_SHIFT;
2008 else
2009 ndlp->nvme_fb_size = LPFC_NVME_MAX_FB;
2010 }
2011 }
2012
2013 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_DISC,
2014 "6029 NVME PRLI Cmpl w1 x%08x "
2015 "w4 x%08x w5 x%08x flag x%x, "
2016 "fcp_info x%x nlp_type x%x\n",
2017 be32_to_cpu(nvpr->word1),
2018 be32_to_cpu(nvpr->word4),
2019 be32_to_cpu(nvpr->word5),
2020 ndlp->nlp_flag, ndlp->nlp_fcp_info,
2021 ndlp->nlp_type);
2022 }
2023 if (!(ndlp->nlp_type & NLP_FCP_TARGET) &&
2024 (vport->port_type == LPFC_NPIV_PORT) &&
2025 vport->cfg_restrict_login) {
2026out:
2027 spin_lock_irq(shost->host_lock);
2028 ndlp->nlp_flag |= NLP_TARGET_REMOVE;
2029 spin_unlock_irq(shost->host_lock);
2030 lpfc_issue_els_logo(vport, ndlp, 0);
2031
2032 ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
2033 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
2034 return ndlp->nlp_state;
2035 }
2036
2037out_err:
2038 /* The ndlp state cannot move to MAPPED or UNMAPPED before all PRLIs
2039 * are complete.
2040 */
2041 if (ndlp->fc4_prli_sent == 0) {
2042 ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
2043 if (ndlp->nlp_type & (NLP_FCP_TARGET | NLP_NVME_TARGET))
2044 lpfc_nlp_set_state(vport, ndlp, NLP_STE_MAPPED_NODE);
2045 else if (ndlp->nlp_type &
2046 (NLP_FCP_INITIATOR | NLP_NVME_INITIATOR))
2047 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
2048 } else
2049 lpfc_printf_vlog(vport,
2050 KERN_INFO, LOG_ELS,
2051 "3067 PRLI's still outstanding "
2052 "on x%06x - count %d, Pend Node Mode "
2053 "transition...\n",
2054 ndlp->nlp_DID, ndlp->fc4_prli_sent);
2055
2056 return ndlp->nlp_state;
2057}
2058
2059/*! lpfc_device_rm_prli_issue
2060 *
2061 * \pre
2062 * \post
2063 * \param phba
2064 * \param ndlp
2065 * \param arg
2066 * \param evt
2067 * \return uint32_t
2068 *
2069 * \b Description:
2070 * This routine is envoked when we a request to remove a nport we are in the
2071 * process of PRLIing. We should software abort outstanding prli, unreg
2072 * login, send a logout. We will change node state to UNUSED_NODE, put it
2073 * on plogi list so it can be freed when LOGO completes.
2074 *
2075 */
2076
2077static uint32_t
2078lpfc_device_rm_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2079 void *arg, uint32_t evt)
2080{
2081 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2082
2083 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
2084 spin_lock_irq(shost->host_lock);
2085 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
2086 spin_unlock_irq(shost->host_lock);
2087 return ndlp->nlp_state;
2088 } else {
2089 /* software abort outstanding PLOGI */
2090 lpfc_els_abort(vport->phba, ndlp);
2091
2092 lpfc_drop_node(vport, ndlp);
2093 return NLP_STE_FREED_NODE;
2094 }
2095}
2096
2097
2098/*! lpfc_device_recov_prli_issue
2099 *
2100 * \pre
2101 * \post
2102 * \param phba
2103 * \param ndlp
2104 * \param arg
2105 * \param evt
2106 * \return uint32_t
2107 *
2108 * \b Description:
2109 * The routine is envoked when the state of a device is unknown, like
2110 * during a link down. We should remove the nodelist entry from the
2111 * unmapped list, issue a UNREG_LOGIN, do a software abort of the
2112 * outstanding PRLI command, then free the node entry.
2113 */
2114static uint32_t
2115lpfc_device_recov_prli_issue(struct lpfc_vport *vport,
2116 struct lpfc_nodelist *ndlp,
2117 void *arg,
2118 uint32_t evt)
2119{
2120 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2121 struct lpfc_hba *phba = vport->phba;
2122
2123 /* Don't do anything that will mess up processing of the
2124 * previous RSCN.
2125 */
2126 if (vport->fc_flag & FC_RSCN_DEFERRED)
2127 return ndlp->nlp_state;
2128
2129 /* software abort outstanding PRLI */
2130 lpfc_els_abort(phba, ndlp);
2131
2132 ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
2133 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
2134 spin_lock_irq(shost->host_lock);
2135 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
2136 spin_unlock_irq(shost->host_lock);
2137 lpfc_disc_set_adisc(vport, ndlp);
2138 return ndlp->nlp_state;
2139}
2140
2141static uint32_t
2142lpfc_rcv_plogi_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2143 void *arg, uint32_t evt)
2144{
2145 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *)arg;
2146 struct ls_rjt stat;
2147
2148 memset(&stat, 0, sizeof(struct ls_rjt));
2149 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
2150 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
2151 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
2152 return ndlp->nlp_state;
2153}
2154
2155static uint32_t
2156lpfc_rcv_prli_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2157 void *arg, uint32_t evt)
2158{
2159 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *)arg;
2160 struct ls_rjt stat;
2161
2162 memset(&stat, 0, sizeof(struct ls_rjt));
2163 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
2164 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
2165 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
2166 return ndlp->nlp_state;
2167}
2168
2169static uint32_t
2170lpfc_rcv_logo_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2171 void *arg, uint32_t evt)
2172{
2173 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2174 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *)arg;
2175
2176 spin_lock_irq(shost->host_lock);
2177 ndlp->nlp_flag |= NLP_LOGO_ACC;
2178 spin_unlock_irq(shost->host_lock);
2179 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
2180 return ndlp->nlp_state;
2181}
2182
2183static uint32_t
2184lpfc_rcv_padisc_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2185 void *arg, uint32_t evt)
2186{
2187 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *)arg;
2188 struct ls_rjt stat;
2189
2190 memset(&stat, 0, sizeof(struct ls_rjt));
2191 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
2192 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
2193 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
2194 return ndlp->nlp_state;
2195}
2196
2197static uint32_t
2198lpfc_rcv_prlo_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2199 void *arg, uint32_t evt)
2200{
2201 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *)arg;
2202 struct ls_rjt stat;
2203
2204 memset(&stat, 0, sizeof(struct ls_rjt));
2205 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
2206 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
2207 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
2208 return ndlp->nlp_state;
2209}
2210
2211static uint32_t
2212lpfc_cmpl_logo_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2213 void *arg, uint32_t evt)
2214{
2215 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2216
2217 ndlp->nlp_prev_state = NLP_STE_LOGO_ISSUE;
2218 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
2219 spin_lock_irq(shost->host_lock);
2220 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
2221 spin_unlock_irq(shost->host_lock);
2222 lpfc_disc_set_adisc(vport, ndlp);
2223 return ndlp->nlp_state;
2224}
2225
2226static uint32_t
2227lpfc_device_rm_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2228 void *arg, uint32_t evt)
2229{
2230 /*
2231 * DevLoss has timed out and is calling for Device Remove.
2232 * In this case, abort the LOGO and cleanup the ndlp
2233 */
2234
2235 lpfc_unreg_rpi(vport, ndlp);
2236 /* software abort outstanding PLOGI */
2237 lpfc_els_abort(vport->phba, ndlp);
2238 lpfc_drop_node(vport, ndlp);
2239 return NLP_STE_FREED_NODE;
2240}
2241
2242static uint32_t
2243lpfc_device_recov_logo_issue(struct lpfc_vport *vport,
2244 struct lpfc_nodelist *ndlp,
2245 void *arg, uint32_t evt)
2246{
2247 /*
2248 * Device Recovery events have no meaning for a node with a LOGO
2249 * outstanding. The LOGO has to complete first and handle the
2250 * node from that point.
2251 */
2252 return ndlp->nlp_state;
2253}
2254
2255static uint32_t
2256lpfc_rcv_plogi_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2257 void *arg, uint32_t evt)
2258{
2259 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2260
2261 lpfc_rcv_plogi(vport, ndlp, cmdiocb);
2262 return ndlp->nlp_state;
2263}
2264
2265static uint32_t
2266lpfc_rcv_prli_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2267 void *arg, uint32_t evt)
2268{
2269 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2270
2271 if (!lpfc_rcv_prli_support_check(vport, ndlp, cmdiocb))
2272 return ndlp->nlp_state;
2273
2274 lpfc_rcv_prli(vport, ndlp, cmdiocb);
2275 lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
2276 return ndlp->nlp_state;
2277}
2278
2279static uint32_t
2280lpfc_rcv_logo_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2281 void *arg, uint32_t evt)
2282{
2283 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2284
2285 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
2286 return ndlp->nlp_state;
2287}
2288
2289static uint32_t
2290lpfc_rcv_padisc_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2291 void *arg, uint32_t evt)
2292{
2293 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2294
2295 lpfc_rcv_padisc(vport, ndlp, cmdiocb);
2296 return ndlp->nlp_state;
2297}
2298
2299static uint32_t
2300lpfc_rcv_prlo_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2301 void *arg, uint32_t evt)
2302{
2303 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2304
2305 lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
2306 return ndlp->nlp_state;
2307}
2308
2309static uint32_t
2310lpfc_device_recov_unmap_node(struct lpfc_vport *vport,
2311 struct lpfc_nodelist *ndlp,
2312 void *arg,
2313 uint32_t evt)
2314{
2315 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2316
2317 ndlp->nlp_prev_state = NLP_STE_UNMAPPED_NODE;
2318 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
2319 spin_lock_irq(shost->host_lock);
2320 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
2321 spin_unlock_irq(shost->host_lock);
2322 lpfc_disc_set_adisc(vport, ndlp);
2323
2324 return ndlp->nlp_state;
2325}
2326
2327static uint32_t
2328lpfc_rcv_plogi_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2329 void *arg, uint32_t evt)
2330{
2331 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2332
2333 lpfc_rcv_plogi(vport, ndlp, cmdiocb);
2334 return ndlp->nlp_state;
2335}
2336
2337static uint32_t
2338lpfc_rcv_prli_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2339 void *arg, uint32_t evt)
2340{
2341 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2342
2343 if (!lpfc_rcv_prli_support_check(vport, ndlp, cmdiocb))
2344 return ndlp->nlp_state;
2345 lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
2346 return ndlp->nlp_state;
2347}
2348
2349static uint32_t
2350lpfc_rcv_logo_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2351 void *arg, uint32_t evt)
2352{
2353 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2354
2355 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
2356 return ndlp->nlp_state;
2357}
2358
2359static uint32_t
2360lpfc_rcv_padisc_mapped_node(struct lpfc_vport *vport,
2361 struct lpfc_nodelist *ndlp,
2362 void *arg, uint32_t evt)
2363{
2364 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2365
2366 lpfc_rcv_padisc(vport, ndlp, cmdiocb);
2367 return ndlp->nlp_state;
2368}
2369
2370static uint32_t
2371lpfc_rcv_prlo_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2372 void *arg, uint32_t evt)
2373{
2374 struct lpfc_hba *phba = vport->phba;
2375 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2376
2377 /* flush the target */
2378 lpfc_sli_abort_iocb(vport, &phba->sli.sli3_ring[LPFC_FCP_RING],
2379 ndlp->nlp_sid, 0, LPFC_CTX_TGT);
2380
2381 /* Treat like rcv logo */
2382 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_PRLO);
2383 return ndlp->nlp_state;
2384}
2385
2386static uint32_t
2387lpfc_device_recov_mapped_node(struct lpfc_vport *vport,
2388 struct lpfc_nodelist *ndlp,
2389 void *arg,
2390 uint32_t evt)
2391{
2392 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2393
2394 ndlp->nlp_prev_state = NLP_STE_MAPPED_NODE;
2395 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
2396 spin_lock_irq(shost->host_lock);
2397 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
2398 spin_unlock_irq(shost->host_lock);
2399 lpfc_disc_set_adisc(vport, ndlp);
2400 return ndlp->nlp_state;
2401}
2402
2403static uint32_t
2404lpfc_rcv_plogi_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2405 void *arg, uint32_t evt)
2406{
2407 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2408 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2409
2410 /* Ignore PLOGI if we have an outstanding LOGO */
2411 if (ndlp->nlp_flag & (NLP_LOGO_SND | NLP_LOGO_ACC))
2412 return ndlp->nlp_state;
2413 if (lpfc_rcv_plogi(vport, ndlp, cmdiocb)) {
2414 lpfc_cancel_retry_delay_tmo(vport, ndlp);
2415 spin_lock_irq(shost->host_lock);
2416 ndlp->nlp_flag &= ~(NLP_NPR_ADISC | NLP_NPR_2B_DISC);
2417 spin_unlock_irq(shost->host_lock);
2418 } else if (!(ndlp->nlp_flag & NLP_NPR_2B_DISC)) {
2419 /* send PLOGI immediately, move to PLOGI issue state */
2420 if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) {
2421 ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
2422 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
2423 lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
2424 }
2425 }
2426 return ndlp->nlp_state;
2427}
2428
2429static uint32_t
2430lpfc_rcv_prli_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2431 void *arg, uint32_t evt)
2432{
2433 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2434 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2435 struct ls_rjt stat;
2436
2437 memset(&stat, 0, sizeof (struct ls_rjt));
2438 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
2439 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
2440 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
2441
2442 if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) {
2443 if (ndlp->nlp_flag & NLP_NPR_ADISC) {
2444 spin_lock_irq(shost->host_lock);
2445 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
2446 ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
2447 spin_unlock_irq(shost->host_lock);
2448 lpfc_nlp_set_state(vport, ndlp, NLP_STE_ADISC_ISSUE);
2449 lpfc_issue_els_adisc(vport, ndlp, 0);
2450 } else {
2451 ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
2452 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
2453 lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
2454 }
2455 }
2456 return ndlp->nlp_state;
2457}
2458
2459static uint32_t
2460lpfc_rcv_logo_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2461 void *arg, uint32_t evt)
2462{
2463 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2464
2465 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
2466 return ndlp->nlp_state;
2467}
2468
2469static uint32_t
2470lpfc_rcv_padisc_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2471 void *arg, uint32_t evt)
2472{
2473 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2474
2475 lpfc_rcv_padisc(vport, ndlp, cmdiocb);
2476 /*
2477 * Do not start discovery if discovery is about to start
2478 * or discovery in progress for this node. Starting discovery
2479 * here will affect the counting of discovery threads.
2480 */
2481 if (!(ndlp->nlp_flag & NLP_DELAY_TMO) &&
2482 !(ndlp->nlp_flag & NLP_NPR_2B_DISC)) {
2483 if (ndlp->nlp_flag & NLP_NPR_ADISC) {
2484 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
2485 ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
2486 lpfc_nlp_set_state(vport, ndlp, NLP_STE_ADISC_ISSUE);
2487 lpfc_issue_els_adisc(vport, ndlp, 0);
2488 } else {
2489 ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
2490 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
2491 lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
2492 }
2493 }
2494 return ndlp->nlp_state;
2495}
2496
2497static uint32_t
2498lpfc_rcv_prlo_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2499 void *arg, uint32_t evt)
2500{
2501 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2502 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2503
2504 spin_lock_irq(shost->host_lock);
2505 ndlp->nlp_flag |= NLP_LOGO_ACC;
2506 spin_unlock_irq(shost->host_lock);
2507
2508 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
2509
2510 if ((ndlp->nlp_flag & NLP_DELAY_TMO) == 0) {
2511 mod_timer(&ndlp->nlp_delayfunc,
2512 jiffies + msecs_to_jiffies(1000 * 1));
2513 spin_lock_irq(shost->host_lock);
2514 ndlp->nlp_flag |= NLP_DELAY_TMO;
2515 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
2516 spin_unlock_irq(shost->host_lock);
2517 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
2518 } else {
2519 spin_lock_irq(shost->host_lock);
2520 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
2521 spin_unlock_irq(shost->host_lock);
2522 }
2523 return ndlp->nlp_state;
2524}
2525
2526static uint32_t
2527lpfc_cmpl_plogi_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2528 void *arg, uint32_t evt)
2529{
2530 struct lpfc_iocbq *cmdiocb, *rspiocb;
2531 IOCB_t *irsp;
2532 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2533
2534 cmdiocb = (struct lpfc_iocbq *) arg;
2535 rspiocb = cmdiocb->context_un.rsp_iocb;
2536
2537 irsp = &rspiocb->iocb;
2538 if (irsp->ulpStatus) {
2539 spin_lock_irq(shost->host_lock);
2540 ndlp->nlp_flag |= NLP_DEFER_RM;
2541 spin_unlock_irq(shost->host_lock);
2542 return NLP_STE_FREED_NODE;
2543 }
2544 return ndlp->nlp_state;
2545}
2546
2547static uint32_t
2548lpfc_cmpl_prli_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2549 void *arg, uint32_t evt)
2550{
2551 struct lpfc_iocbq *cmdiocb, *rspiocb;
2552 IOCB_t *irsp;
2553
2554 cmdiocb = (struct lpfc_iocbq *) arg;
2555 rspiocb = cmdiocb->context_un.rsp_iocb;
2556
2557 irsp = &rspiocb->iocb;
2558 if (irsp->ulpStatus && (ndlp->nlp_flag & NLP_NODEV_REMOVE)) {
2559 lpfc_drop_node(vport, ndlp);
2560 return NLP_STE_FREED_NODE;
2561 }
2562 return ndlp->nlp_state;
2563}
2564
2565static uint32_t
2566lpfc_cmpl_logo_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2567 void *arg, uint32_t evt)
2568{
2569 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2570
2571 /* For the fabric port just clear the fc flags. */
2572 if (ndlp->nlp_DID == Fabric_DID) {
2573 spin_lock_irq(shost->host_lock);
2574 vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP);
2575 spin_unlock_irq(shost->host_lock);
2576 }
2577 lpfc_unreg_rpi(vport, ndlp);
2578 return ndlp->nlp_state;
2579}
2580
2581static uint32_t
2582lpfc_cmpl_adisc_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2583 void *arg, uint32_t evt)
2584{
2585 struct lpfc_iocbq *cmdiocb, *rspiocb;
2586 IOCB_t *irsp;
2587
2588 cmdiocb = (struct lpfc_iocbq *) arg;
2589 rspiocb = cmdiocb->context_un.rsp_iocb;
2590
2591 irsp = &rspiocb->iocb;
2592 if (irsp->ulpStatus && (ndlp->nlp_flag & NLP_NODEV_REMOVE)) {
2593 lpfc_drop_node(vport, ndlp);
2594 return NLP_STE_FREED_NODE;
2595 }
2596 return ndlp->nlp_state;
2597}
2598
2599static uint32_t
2600lpfc_cmpl_reglogin_npr_node(struct lpfc_vport *vport,
2601 struct lpfc_nodelist *ndlp,
2602 void *arg, uint32_t evt)
2603{
2604 LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg;
2605 MAILBOX_t *mb = &pmb->u.mb;
2606
2607 if (!mb->mbxStatus) {
2608 /* SLI4 ports have preallocated logical rpis. */
2609 if (vport->phba->sli_rev < LPFC_SLI_REV4)
2610 ndlp->nlp_rpi = mb->un.varWords[0];
2611 ndlp->nlp_flag |= NLP_RPI_REGISTERED;
2612 if (ndlp->nlp_flag & NLP_LOGO_ACC) {
2613 lpfc_unreg_rpi(vport, ndlp);
2614 }
2615 } else {
2616 if (ndlp->nlp_flag & NLP_NODEV_REMOVE) {
2617 lpfc_drop_node(vport, ndlp);
2618 return NLP_STE_FREED_NODE;
2619 }
2620 }
2621 return ndlp->nlp_state;
2622}
2623
2624static uint32_t
2625lpfc_device_rm_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2626 void *arg, uint32_t evt)
2627{
2628 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2629
2630 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
2631 spin_lock_irq(shost->host_lock);
2632 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
2633 spin_unlock_irq(shost->host_lock);
2634 return ndlp->nlp_state;
2635 }
2636 lpfc_drop_node(vport, ndlp);
2637 return NLP_STE_FREED_NODE;
2638}
2639
2640static uint32_t
2641lpfc_device_recov_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2642 void *arg, uint32_t evt)
2643{
2644 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2645
2646 /* Don't do anything that will mess up processing of the
2647 * previous RSCN.
2648 */
2649 if (vport->fc_flag & FC_RSCN_DEFERRED)
2650 return ndlp->nlp_state;
2651
2652 lpfc_cancel_retry_delay_tmo(vport, ndlp);
2653 spin_lock_irq(shost->host_lock);
2654 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
2655 spin_unlock_irq(shost->host_lock);
2656 return ndlp->nlp_state;
2657}
2658
2659
2660/* This next section defines the NPort Discovery State Machine */
2661
2662/* There are 4 different double linked lists nodelist entries can reside on.
2663 * The plogi list and adisc list are used when Link Up discovery or RSCN
2664 * processing is needed. Each list holds the nodes that we will send PLOGI
2665 * or ADISC on. These lists will keep track of what nodes will be effected
2666 * by an RSCN, or a Link Up (Typically, all nodes are effected on Link Up).
2667 * The unmapped_list will contain all nodes that we have successfully logged
2668 * into at the Fibre Channel level. The mapped_list will contain all nodes
2669 * that are mapped FCP targets.
2670 */
2671/*
2672 * The bind list is a list of undiscovered (potentially non-existent) nodes
2673 * that we have saved binding information on. This information is used when
2674 * nodes transition from the unmapped to the mapped list.
2675 */
2676/* For UNUSED_NODE state, the node has just been allocated .
2677 * For PLOGI_ISSUE and REG_LOGIN_ISSUE, the node is on
2678 * the PLOGI list. For REG_LOGIN_COMPL, the node is taken off the PLOGI list
2679 * and put on the unmapped list. For ADISC processing, the node is taken off
2680 * the ADISC list and placed on either the mapped or unmapped list (depending
2681 * on its previous state). Once on the unmapped list, a PRLI is issued and the
2682 * state changed to PRLI_ISSUE. When the PRLI completion occurs, the state is
2683 * changed to UNMAPPED_NODE. If the completion indicates a mapped
2684 * node, the node is taken off the unmapped list. The binding list is checked
2685 * for a valid binding, or a binding is automatically assigned. If binding
2686 * assignment is unsuccessful, the node is left on the unmapped list. If
2687 * binding assignment is successful, the associated binding list entry (if
2688 * any) is removed, and the node is placed on the mapped list.
2689 */
2690/*
2691 * For a Link Down, all nodes on the ADISC, PLOGI, unmapped or mapped
2692 * lists will receive a DEVICE_RECOVERY event. If the linkdown or devloss timers
2693 * expire, all effected nodes will receive a DEVICE_RM event.
2694 */
2695/*
2696 * For a Link Up or RSCN, all nodes will move from the mapped / unmapped lists
2697 * to either the ADISC or PLOGI list. After a Nameserver query or ALPA loopmap
2698 * check, additional nodes may be added or removed (via DEVICE_RM) to / from
2699 * the PLOGI or ADISC lists. Once the PLOGI and ADISC lists are populated,
2700 * we will first process the ADISC list. 32 entries are processed initially and
2701 * ADISC is initited for each one. Completions / Events for each node are
2702 * funnelled thru the state machine. As each node finishes ADISC processing, it
2703 * starts ADISC for any nodes waiting for ADISC processing. If no nodes are
2704 * waiting, and the ADISC list count is identically 0, then we are done. For
2705 * Link Up discovery, since all nodes on the PLOGI list are UNREG_LOGIN'ed, we
2706 * can issue a CLEAR_LA and reenable Link Events. Next we will process the PLOGI
2707 * list. 32 entries are processed initially and PLOGI is initited for each one.
2708 * Completions / Events for each node are funnelled thru the state machine. As
2709 * each node finishes PLOGI processing, it starts PLOGI for any nodes waiting
2710 * for PLOGI processing. If no nodes are waiting, and the PLOGI list count is
2711 * indentically 0, then we are done. We have now completed discovery / RSCN
2712 * handling. Upon completion, ALL nodes should be on either the mapped or
2713 * unmapped lists.
2714 */
2715
2716static uint32_t (*lpfc_disc_action[NLP_STE_MAX_STATE * NLP_EVT_MAX_EVENT])
2717 (struct lpfc_vport *, struct lpfc_nodelist *, void *, uint32_t) = {
2718 /* Action routine Event Current State */
2719 lpfc_rcv_plogi_unused_node, /* RCV_PLOGI UNUSED_NODE */
2720 lpfc_rcv_els_unused_node, /* RCV_PRLI */
2721 lpfc_rcv_logo_unused_node, /* RCV_LOGO */
2722 lpfc_rcv_els_unused_node, /* RCV_ADISC */
2723 lpfc_rcv_els_unused_node, /* RCV_PDISC */
2724 lpfc_rcv_els_unused_node, /* RCV_PRLO */
2725 lpfc_disc_illegal, /* CMPL_PLOGI */
2726 lpfc_disc_illegal, /* CMPL_PRLI */
2727 lpfc_cmpl_logo_unused_node, /* CMPL_LOGO */
2728 lpfc_disc_illegal, /* CMPL_ADISC */
2729 lpfc_disc_illegal, /* CMPL_REG_LOGIN */
2730 lpfc_device_rm_unused_node, /* DEVICE_RM */
2731 lpfc_device_recov_unused_node, /* DEVICE_RECOVERY */
2732
2733 lpfc_rcv_plogi_plogi_issue, /* RCV_PLOGI PLOGI_ISSUE */
2734 lpfc_rcv_prli_plogi_issue, /* RCV_PRLI */
2735 lpfc_rcv_logo_plogi_issue, /* RCV_LOGO */
2736 lpfc_rcv_els_plogi_issue, /* RCV_ADISC */
2737 lpfc_rcv_els_plogi_issue, /* RCV_PDISC */
2738 lpfc_rcv_els_plogi_issue, /* RCV_PRLO */
2739 lpfc_cmpl_plogi_plogi_issue, /* CMPL_PLOGI */
2740 lpfc_disc_illegal, /* CMPL_PRLI */
2741 lpfc_cmpl_logo_plogi_issue, /* CMPL_LOGO */
2742 lpfc_disc_illegal, /* CMPL_ADISC */
2743 lpfc_cmpl_reglogin_plogi_issue,/* CMPL_REG_LOGIN */
2744 lpfc_device_rm_plogi_issue, /* DEVICE_RM */
2745 lpfc_device_recov_plogi_issue, /* DEVICE_RECOVERY */
2746
2747 lpfc_rcv_plogi_adisc_issue, /* RCV_PLOGI ADISC_ISSUE */
2748 lpfc_rcv_prli_adisc_issue, /* RCV_PRLI */
2749 lpfc_rcv_logo_adisc_issue, /* RCV_LOGO */
2750 lpfc_rcv_padisc_adisc_issue, /* RCV_ADISC */
2751 lpfc_rcv_padisc_adisc_issue, /* RCV_PDISC */
2752 lpfc_rcv_prlo_adisc_issue, /* RCV_PRLO */
2753 lpfc_disc_illegal, /* CMPL_PLOGI */
2754 lpfc_disc_illegal, /* CMPL_PRLI */
2755 lpfc_disc_illegal, /* CMPL_LOGO */
2756 lpfc_cmpl_adisc_adisc_issue, /* CMPL_ADISC */
2757 lpfc_disc_illegal, /* CMPL_REG_LOGIN */
2758 lpfc_device_rm_adisc_issue, /* DEVICE_RM */
2759 lpfc_device_recov_adisc_issue, /* DEVICE_RECOVERY */
2760
2761 lpfc_rcv_plogi_reglogin_issue, /* RCV_PLOGI REG_LOGIN_ISSUE */
2762 lpfc_rcv_prli_reglogin_issue, /* RCV_PLOGI */
2763 lpfc_rcv_logo_reglogin_issue, /* RCV_LOGO */
2764 lpfc_rcv_padisc_reglogin_issue, /* RCV_ADISC */
2765 lpfc_rcv_padisc_reglogin_issue, /* RCV_PDISC */
2766 lpfc_rcv_prlo_reglogin_issue, /* RCV_PRLO */
2767 lpfc_cmpl_plogi_illegal, /* CMPL_PLOGI */
2768 lpfc_disc_illegal, /* CMPL_PRLI */
2769 lpfc_disc_illegal, /* CMPL_LOGO */
2770 lpfc_disc_illegal, /* CMPL_ADISC */
2771 lpfc_cmpl_reglogin_reglogin_issue,/* CMPL_REG_LOGIN */
2772 lpfc_device_rm_reglogin_issue, /* DEVICE_RM */
2773 lpfc_device_recov_reglogin_issue,/* DEVICE_RECOVERY */
2774
2775 lpfc_rcv_plogi_prli_issue, /* RCV_PLOGI PRLI_ISSUE */
2776 lpfc_rcv_prli_prli_issue, /* RCV_PRLI */
2777 lpfc_rcv_logo_prli_issue, /* RCV_LOGO */
2778 lpfc_rcv_padisc_prli_issue, /* RCV_ADISC */
2779 lpfc_rcv_padisc_prli_issue, /* RCV_PDISC */
2780 lpfc_rcv_prlo_prli_issue, /* RCV_PRLO */
2781 lpfc_cmpl_plogi_illegal, /* CMPL_PLOGI */
2782 lpfc_cmpl_prli_prli_issue, /* CMPL_PRLI */
2783 lpfc_disc_illegal, /* CMPL_LOGO */
2784 lpfc_disc_illegal, /* CMPL_ADISC */
2785 lpfc_disc_illegal, /* CMPL_REG_LOGIN */
2786 lpfc_device_rm_prli_issue, /* DEVICE_RM */
2787 lpfc_device_recov_prli_issue, /* DEVICE_RECOVERY */
2788
2789 lpfc_rcv_plogi_logo_issue, /* RCV_PLOGI LOGO_ISSUE */
2790 lpfc_rcv_prli_logo_issue, /* RCV_PRLI */
2791 lpfc_rcv_logo_logo_issue, /* RCV_LOGO */
2792 lpfc_rcv_padisc_logo_issue, /* RCV_ADISC */
2793 lpfc_rcv_padisc_logo_issue, /* RCV_PDISC */
2794 lpfc_rcv_prlo_logo_issue, /* RCV_PRLO */
2795 lpfc_cmpl_plogi_illegal, /* CMPL_PLOGI */
2796 lpfc_disc_illegal, /* CMPL_PRLI */
2797 lpfc_cmpl_logo_logo_issue, /* CMPL_LOGO */
2798 lpfc_disc_illegal, /* CMPL_ADISC */
2799 lpfc_disc_illegal, /* CMPL_REG_LOGIN */
2800 lpfc_device_rm_logo_issue, /* DEVICE_RM */
2801 lpfc_device_recov_logo_issue, /* DEVICE_RECOVERY */
2802
2803 lpfc_rcv_plogi_unmap_node, /* RCV_PLOGI UNMAPPED_NODE */
2804 lpfc_rcv_prli_unmap_node, /* RCV_PRLI */
2805 lpfc_rcv_logo_unmap_node, /* RCV_LOGO */
2806 lpfc_rcv_padisc_unmap_node, /* RCV_ADISC */
2807 lpfc_rcv_padisc_unmap_node, /* RCV_PDISC */
2808 lpfc_rcv_prlo_unmap_node, /* RCV_PRLO */
2809 lpfc_disc_illegal, /* CMPL_PLOGI */
2810 lpfc_disc_illegal, /* CMPL_PRLI */
2811 lpfc_disc_illegal, /* CMPL_LOGO */
2812 lpfc_disc_illegal, /* CMPL_ADISC */
2813 lpfc_disc_illegal, /* CMPL_REG_LOGIN */
2814 lpfc_disc_illegal, /* DEVICE_RM */
2815 lpfc_device_recov_unmap_node, /* DEVICE_RECOVERY */
2816
2817 lpfc_rcv_plogi_mapped_node, /* RCV_PLOGI MAPPED_NODE */
2818 lpfc_rcv_prli_mapped_node, /* RCV_PRLI */
2819 lpfc_rcv_logo_mapped_node, /* RCV_LOGO */
2820 lpfc_rcv_padisc_mapped_node, /* RCV_ADISC */
2821 lpfc_rcv_padisc_mapped_node, /* RCV_PDISC */
2822 lpfc_rcv_prlo_mapped_node, /* RCV_PRLO */
2823 lpfc_disc_illegal, /* CMPL_PLOGI */
2824 lpfc_disc_illegal, /* CMPL_PRLI */
2825 lpfc_disc_illegal, /* CMPL_LOGO */
2826 lpfc_disc_illegal, /* CMPL_ADISC */
2827 lpfc_disc_illegal, /* CMPL_REG_LOGIN */
2828 lpfc_disc_illegal, /* DEVICE_RM */
2829 lpfc_device_recov_mapped_node, /* DEVICE_RECOVERY */
2830
2831 lpfc_rcv_plogi_npr_node, /* RCV_PLOGI NPR_NODE */
2832 lpfc_rcv_prli_npr_node, /* RCV_PRLI */
2833 lpfc_rcv_logo_npr_node, /* RCV_LOGO */
2834 lpfc_rcv_padisc_npr_node, /* RCV_ADISC */
2835 lpfc_rcv_padisc_npr_node, /* RCV_PDISC */
2836 lpfc_rcv_prlo_npr_node, /* RCV_PRLO */
2837 lpfc_cmpl_plogi_npr_node, /* CMPL_PLOGI */
2838 lpfc_cmpl_prli_npr_node, /* CMPL_PRLI */
2839 lpfc_cmpl_logo_npr_node, /* CMPL_LOGO */
2840 lpfc_cmpl_adisc_npr_node, /* CMPL_ADISC */
2841 lpfc_cmpl_reglogin_npr_node, /* CMPL_REG_LOGIN */
2842 lpfc_device_rm_npr_node, /* DEVICE_RM */
2843 lpfc_device_recov_npr_node, /* DEVICE_RECOVERY */
2844};
2845
2846int
2847lpfc_disc_state_machine(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2848 void *arg, uint32_t evt)
2849{
2850 uint32_t cur_state, rc;
2851 uint32_t(*func) (struct lpfc_vport *, struct lpfc_nodelist *, void *,
2852 uint32_t);
2853 uint32_t got_ndlp = 0;
2854
2855 if (lpfc_nlp_get(ndlp))
2856 got_ndlp = 1;
2857
2858 cur_state = ndlp->nlp_state;
2859
2860 /* DSM in event <evt> on NPort <nlp_DID> in state <cur_state> */
2861 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
2862 "0211 DSM in event x%x on NPort x%x in "
2863 "state %d Data: x%x\n",
2864 evt, ndlp->nlp_DID, cur_state, ndlp->nlp_flag);
2865
2866 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_DSM,
2867 "DSM in: evt:%d ste:%d did:x%x",
2868 evt, cur_state, ndlp->nlp_DID);
2869
2870 func = lpfc_disc_action[(cur_state * NLP_EVT_MAX_EVENT) + evt];
2871 rc = (func) (vport, ndlp, arg, evt);
2872
2873 /* DSM out state <rc> on NPort <nlp_DID> */
2874 if (got_ndlp) {
2875 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
2876 "0212 DSM out state %d on NPort x%x Data: x%x\n",
2877 rc, ndlp->nlp_DID, ndlp->nlp_flag);
2878
2879 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_DSM,
2880 "DSM out: ste:%d did:x%x flg:x%x",
2881 rc, ndlp->nlp_DID, ndlp->nlp_flag);
2882 /* Decrement the ndlp reference count held for this function */
2883 lpfc_nlp_put(ndlp);
2884 } else {
2885 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
2886 "0213 DSM out state %d on NPort free\n", rc);
2887
2888 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_DSM,
2889 "DSM out: ste:%d did:x%x flg:x%x",
2890 rc, 0, 0);
2891 }
2892
2893 return rc;
2894}
Linux 6.x block layer and io_uring tree(s)