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[SCSI] lpfc 8.3.37: Fixed stale ndlp state when the node is marked for deferred removal.
[deliverable/linux.git] / drivers / scsi / lpfc / lpfc_nportdisc.c
1 /*******************************************************************
2 * This file is part of the Emulex Linux Device Driver for *
3 * Fibre Channel Host Bus Adapters. *
4 * Copyright (C) 2004-2012 Emulex. All rights reserved. *
5 * EMULEX and SLI are trademarks of Emulex. *
6 * www.emulex.com *
7 * Portions Copyright (C) 2004-2005 Christoph Hellwig *
8 * *
9 * This program is free software; you can redistribute it and/or *
10 * modify it under the terms of version 2 of the GNU General *
11 * Public License as published by the Free Software Foundation. *
12 * This program is distributed in the hope that it will be useful. *
13 * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND *
14 * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, *
15 * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE *
16 * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD *
17 * TO BE LEGALLY INVALID. See the GNU General Public License for *
18 * more details, a copy of which can be found in the file COPYING *
19 * included with this package. *
20 *******************************************************************/
21
22 #include <linux/blkdev.h>
23 #include <linux/pci.h>
24 #include <linux/slab.h>
25 #include <linux/interrupt.h>
26
27 #include <scsi/scsi.h>
28 #include <scsi/scsi_device.h>
29 #include <scsi/scsi_host.h>
30 #include <scsi/scsi_transport_fc.h>
31
32 #include "lpfc_hw4.h"
33 #include "lpfc_hw.h"
34 #include "lpfc_sli.h"
35 #include "lpfc_sli4.h"
36 #include "lpfc_nl.h"
37 #include "lpfc_disc.h"
38 #include "lpfc_scsi.h"
39 #include "lpfc.h"
40 #include "lpfc_logmsg.h"
41 #include "lpfc_crtn.h"
42 #include "lpfc_vport.h"
43 #include "lpfc_debugfs.h"
44
45
46 /* Called to verify a rcv'ed ADISC was intended for us. */
47 static int
48 lpfc_check_adisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
49 struct lpfc_name *nn, struct lpfc_name *pn)
50 {
51 /* First, we MUST have a RPI registered */
52 if (!(ndlp->nlp_flag & NLP_RPI_REGISTERED))
53 return 0;
54
55 /* Compare the ADISC rsp WWNN / WWPN matches our internal node
56 * table entry for that node.
57 */
58 if (memcmp(nn, &ndlp->nlp_nodename, sizeof (struct lpfc_name)))
59 return 0;
60
61 if (memcmp(pn, &ndlp->nlp_portname, sizeof (struct lpfc_name)))
62 return 0;
63
64 /* we match, return success */
65 return 1;
66 }
67
68 int
69 lpfc_check_sparm(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
70 struct serv_parm *sp, uint32_t class, int flogi)
71 {
72 volatile struct serv_parm *hsp = &vport->fc_sparam;
73 uint16_t hsp_value, ssp_value = 0;
74
75 /*
76 * The receive data field size and buffer-to-buffer receive data field
77 * size entries are 16 bits but are represented as two 8-bit fields in
78 * the driver data structure to account for rsvd bits and other control
79 * bits. Reconstruct and compare the fields as a 16-bit values before
80 * correcting the byte values.
81 */
82 if (sp->cls1.classValid) {
83 if (!flogi) {
84 hsp_value = ((hsp->cls1.rcvDataSizeMsb << 8) |
85 hsp->cls1.rcvDataSizeLsb);
86 ssp_value = ((sp->cls1.rcvDataSizeMsb << 8) |
87 sp->cls1.rcvDataSizeLsb);
88 if (!ssp_value)
89 goto bad_service_param;
90 if (ssp_value > hsp_value) {
91 sp->cls1.rcvDataSizeLsb =
92 hsp->cls1.rcvDataSizeLsb;
93 sp->cls1.rcvDataSizeMsb =
94 hsp->cls1.rcvDataSizeMsb;
95 }
96 }
97 } else if (class == CLASS1)
98 goto bad_service_param;
99 if (sp->cls2.classValid) {
100 if (!flogi) {
101 hsp_value = ((hsp->cls2.rcvDataSizeMsb << 8) |
102 hsp->cls2.rcvDataSizeLsb);
103 ssp_value = ((sp->cls2.rcvDataSizeMsb << 8) |
104 sp->cls2.rcvDataSizeLsb);
105 if (!ssp_value)
106 goto bad_service_param;
107 if (ssp_value > hsp_value) {
108 sp->cls2.rcvDataSizeLsb =
109 hsp->cls2.rcvDataSizeLsb;
110 sp->cls2.rcvDataSizeMsb =
111 hsp->cls2.rcvDataSizeMsb;
112 }
113 }
114 } else if (class == CLASS2)
115 goto bad_service_param;
116 if (sp->cls3.classValid) {
117 if (!flogi) {
118 hsp_value = ((hsp->cls3.rcvDataSizeMsb << 8) |
119 hsp->cls3.rcvDataSizeLsb);
120 ssp_value = ((sp->cls3.rcvDataSizeMsb << 8) |
121 sp->cls3.rcvDataSizeLsb);
122 if (!ssp_value)
123 goto bad_service_param;
124 if (ssp_value > hsp_value) {
125 sp->cls3.rcvDataSizeLsb =
126 hsp->cls3.rcvDataSizeLsb;
127 sp->cls3.rcvDataSizeMsb =
128 hsp->cls3.rcvDataSizeMsb;
129 }
130 }
131 } else if (class == CLASS3)
132 goto bad_service_param;
133
134 /*
135 * Preserve the upper four bits of the MSB from the PLOGI response.
136 * These bits contain the Buffer-to-Buffer State Change Number
137 * from the target and need to be passed to the FW.
138 */
139 hsp_value = (hsp->cmn.bbRcvSizeMsb << 8) | hsp->cmn.bbRcvSizeLsb;
140 ssp_value = (sp->cmn.bbRcvSizeMsb << 8) | sp->cmn.bbRcvSizeLsb;
141 if (ssp_value > hsp_value) {
142 sp->cmn.bbRcvSizeLsb = hsp->cmn.bbRcvSizeLsb;
143 sp->cmn.bbRcvSizeMsb = (sp->cmn.bbRcvSizeMsb & 0xF0) |
144 (hsp->cmn.bbRcvSizeMsb & 0x0F);
145 }
146
147 memcpy(&ndlp->nlp_nodename, &sp->nodeName, sizeof (struct lpfc_name));
148 memcpy(&ndlp->nlp_portname, &sp->portName, sizeof (struct lpfc_name));
149 return 1;
150 bad_service_param:
151 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
152 "0207 Device %x "
153 "(%02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x) sent "
154 "invalid service parameters. Ignoring device.\n",
155 ndlp->nlp_DID,
156 sp->nodeName.u.wwn[0], sp->nodeName.u.wwn[1],
157 sp->nodeName.u.wwn[2], sp->nodeName.u.wwn[3],
158 sp->nodeName.u.wwn[4], sp->nodeName.u.wwn[5],
159 sp->nodeName.u.wwn[6], sp->nodeName.u.wwn[7]);
160 return 0;
161 }
162
163 static void *
164 lpfc_check_elscmpl_iocb(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
165 struct lpfc_iocbq *rspiocb)
166 {
167 struct lpfc_dmabuf *pcmd, *prsp;
168 uint32_t *lp;
169 void *ptr = NULL;
170 IOCB_t *irsp;
171
172 irsp = &rspiocb->iocb;
173 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
174
175 /* For lpfc_els_abort, context2 could be zero'ed to delay
176 * freeing associated memory till after ABTS completes.
177 */
178 if (pcmd) {
179 prsp = list_get_first(&pcmd->list, struct lpfc_dmabuf,
180 list);
181 if (prsp) {
182 lp = (uint32_t *) prsp->virt;
183 ptr = (void *)((uint8_t *)lp + sizeof(uint32_t));
184 }
185 } else {
186 /* Force ulpStatus error since we are returning NULL ptr */
187 if (!(irsp->ulpStatus)) {
188 irsp->ulpStatus = IOSTAT_LOCAL_REJECT;
189 irsp->un.ulpWord[4] = IOERR_SLI_ABORTED;
190 }
191 ptr = NULL;
192 }
193 return ptr;
194 }
195
196
197
198 /*
199 * Free resources / clean up outstanding I/Os
200 * associated with a LPFC_NODELIST entry. This
201 * routine effectively results in a "software abort".
202 */
203 int
204 lpfc_els_abort(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
205 {
206 LIST_HEAD(completions);
207 LIST_HEAD(txcmplq_completions);
208 LIST_HEAD(abort_list);
209 struct lpfc_sli *psli = &phba->sli;
210 struct lpfc_sli_ring *pring = &psli->ring[LPFC_ELS_RING];
211 struct lpfc_iocbq *iocb, *next_iocb;
212
213 /* Abort outstanding I/O on NPort <nlp_DID> */
214 lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_DISCOVERY,
215 "2819 Abort outstanding I/O on NPort x%x "
216 "Data: x%x x%x x%x\n",
217 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
218 ndlp->nlp_rpi);
219
220 lpfc_fabric_abort_nport(ndlp);
221
222 /* First check the txq */
223 spin_lock_irq(&phba->hbalock);
224 list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) {
225 /* Check to see if iocb matches the nport we are looking for */
226 if (lpfc_check_sli_ndlp(phba, pring, iocb, ndlp)) {
227 /* It matches, so deque and call compl with anp error */
228 list_move_tail(&iocb->list, &completions);
229 pring->txq_cnt--;
230 }
231 }
232
233 /* Next check the txcmplq */
234 list_splice_init(&pring->txcmplq, &txcmplq_completions);
235 spin_unlock_irq(&phba->hbalock);
236
237 list_for_each_entry_safe(iocb, next_iocb, &txcmplq_completions, list) {
238 /* Check to see if iocb matches the nport we are looking for */
239 if (lpfc_check_sli_ndlp(phba, pring, iocb, ndlp))
240 list_add_tail(&iocb->dlist, &abort_list);
241 }
242 spin_lock_irq(&phba->hbalock);
243 list_splice(&txcmplq_completions, &pring->txcmplq);
244 spin_unlock_irq(&phba->hbalock);
245
246 list_for_each_entry_safe(iocb, next_iocb, &abort_list, dlist) {
247 spin_lock_irq(&phba->hbalock);
248 list_del_init(&iocb->dlist);
249 lpfc_sli_issue_abort_iotag(phba, pring, iocb);
250 spin_unlock_irq(&phba->hbalock);
251 }
252
253 /* Cancel all the IOCBs from the completions list */
254 lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT,
255 IOERR_SLI_ABORTED);
256
257 lpfc_cancel_retry_delay_tmo(phba->pport, ndlp);
258 return 0;
259 }
260
261 static int
262 lpfc_rcv_plogi(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
263 struct lpfc_iocbq *cmdiocb)
264 {
265 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
266 struct lpfc_hba *phba = vport->phba;
267 struct lpfc_dmabuf *pcmd;
268 uint32_t *lp;
269 IOCB_t *icmd;
270 struct serv_parm *sp;
271 LPFC_MBOXQ_t *mbox;
272 struct ls_rjt stat;
273 int rc;
274
275 memset(&stat, 0, sizeof (struct ls_rjt));
276 if (vport->port_state <= LPFC_FDISC) {
277 /* Before responding to PLOGI, check for pt2pt mode.
278 * If we are pt2pt, with an outstanding FLOGI, abort
279 * the FLOGI and resend it first.
280 */
281 if (vport->fc_flag & FC_PT2PT) {
282 lpfc_els_abort_flogi(phba);
283 if (!(vport->fc_flag & FC_PT2PT_PLOGI)) {
284 /* If the other side is supposed to initiate
285 * the PLOGI anyway, just ACC it now and
286 * move on with discovery.
287 */
288 phba->fc_edtov = FF_DEF_EDTOV;
289 phba->fc_ratov = FF_DEF_RATOV;
290 /* Start discovery - this should just do
291 CLEAR_LA */
292 lpfc_disc_start(vport);
293 } else
294 lpfc_initial_flogi(vport);
295 } else {
296 stat.un.b.lsRjtRsnCode = LSRJT_LOGICAL_BSY;
297 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
298 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb,
299 ndlp, NULL);
300 return 0;
301 }
302 }
303 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
304 lp = (uint32_t *) pcmd->virt;
305 sp = (struct serv_parm *) ((uint8_t *) lp + sizeof (uint32_t));
306 if (wwn_to_u64(sp->portName.u.wwn) == 0) {
307 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
308 "0140 PLOGI Reject: invalid nname\n");
309 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
310 stat.un.b.lsRjtRsnCodeExp = LSEXP_INVALID_PNAME;
311 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
312 NULL);
313 return 0;
314 }
315 if (wwn_to_u64(sp->nodeName.u.wwn) == 0) {
316 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
317 "0141 PLOGI Reject: invalid pname\n");
318 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
319 stat.un.b.lsRjtRsnCodeExp = LSEXP_INVALID_NNAME;
320 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
321 NULL);
322 return 0;
323 }
324 if ((lpfc_check_sparm(vport, ndlp, sp, CLASS3, 0) == 0)) {
325 /* Reject this request because invalid parameters */
326 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
327 stat.un.b.lsRjtRsnCodeExp = LSEXP_SPARM_OPTIONS;
328 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
329 NULL);
330 return 0;
331 }
332 icmd = &cmdiocb->iocb;
333
334 /* PLOGI chkparm OK */
335 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
336 "0114 PLOGI chkparm OK Data: x%x x%x x%x x%x\n",
337 ndlp->nlp_DID, ndlp->nlp_state, ndlp->nlp_flag,
338 ndlp->nlp_rpi);
339
340 if (vport->cfg_fcp_class == 2 && sp->cls2.classValid)
341 ndlp->nlp_fcp_info |= CLASS2;
342 else
343 ndlp->nlp_fcp_info |= CLASS3;
344
345 ndlp->nlp_class_sup = 0;
346 if (sp->cls1.classValid)
347 ndlp->nlp_class_sup |= FC_COS_CLASS1;
348 if (sp->cls2.classValid)
349 ndlp->nlp_class_sup |= FC_COS_CLASS2;
350 if (sp->cls3.classValid)
351 ndlp->nlp_class_sup |= FC_COS_CLASS3;
352 if (sp->cls4.classValid)
353 ndlp->nlp_class_sup |= FC_COS_CLASS4;
354 ndlp->nlp_maxframe =
355 ((sp->cmn.bbRcvSizeMsb & 0x0F) << 8) | sp->cmn.bbRcvSizeLsb;
356
357 /* no need to reg_login if we are already in one of these states */
358 switch (ndlp->nlp_state) {
359 case NLP_STE_NPR_NODE:
360 if (!(ndlp->nlp_flag & NLP_NPR_ADISC))
361 break;
362 case NLP_STE_REG_LOGIN_ISSUE:
363 case NLP_STE_PRLI_ISSUE:
364 case NLP_STE_UNMAPPED_NODE:
365 case NLP_STE_MAPPED_NODE:
366 lpfc_els_rsp_acc(vport, ELS_CMD_PLOGI, cmdiocb, ndlp, NULL);
367 return 1;
368 }
369
370 /* Check for Nport to NPort pt2pt protocol */
371 if ((vport->fc_flag & FC_PT2PT) &&
372 !(vport->fc_flag & FC_PT2PT_PLOGI)) {
373
374 /* rcv'ed PLOGI decides what our NPortId will be */
375 vport->fc_myDID = icmd->un.rcvels.parmRo;
376 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
377 if (mbox == NULL)
378 goto out;
379 lpfc_config_link(phba, mbox);
380 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
381 mbox->vport = vport;
382 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
383 if (rc == MBX_NOT_FINISHED) {
384 mempool_free(mbox, phba->mbox_mem_pool);
385 goto out;
386 }
387 /*
388 * For SLI4, the VFI/VPI are registered AFTER the
389 * Nport with the higher WWPN sends us a PLOGI with
390 * our assigned NPortId.
391 */
392 if (phba->sli_rev == LPFC_SLI_REV4)
393 lpfc_issue_reg_vfi(vport);
394
395 lpfc_can_disctmo(vport);
396 }
397 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
398 if (!mbox)
399 goto out;
400
401 /* Registering an existing RPI behaves differently for SLI3 vs SLI4 */
402 if (phba->sli_rev == LPFC_SLI_REV4)
403 lpfc_unreg_rpi(vport, ndlp);
404
405 rc = lpfc_reg_rpi(phba, vport->vpi, icmd->un.rcvels.remoteID,
406 (uint8_t *) sp, mbox, ndlp->nlp_rpi);
407 if (rc) {
408 mempool_free(mbox, phba->mbox_mem_pool);
409 goto out;
410 }
411
412 /* ACC PLOGI rsp command needs to execute first,
413 * queue this mbox command to be processed later.
414 */
415 mbox->mbox_cmpl = lpfc_mbx_cmpl_reg_login;
416 /*
417 * mbox->context2 = lpfc_nlp_get(ndlp) deferred until mailbox
418 * command issued in lpfc_cmpl_els_acc().
419 */
420 mbox->vport = vport;
421 spin_lock_irq(shost->host_lock);
422 ndlp->nlp_flag |= (NLP_ACC_REGLOGIN | NLP_RCV_PLOGI);
423 spin_unlock_irq(shost->host_lock);
424
425 /*
426 * If there is an outstanding PLOGI issued, abort it before
427 * sending ACC rsp for received PLOGI. If pending plogi
428 * is not canceled here, the plogi will be rejected by
429 * remote port and will be retried. On a configuration with
430 * single discovery thread, this will cause a huge delay in
431 * discovery. Also this will cause multiple state machines
432 * running in parallel for this node.
433 */
434 if (ndlp->nlp_state == NLP_STE_PLOGI_ISSUE) {
435 /* software abort outstanding PLOGI */
436 lpfc_els_abort(phba, ndlp);
437 }
438
439 if ((vport->port_type == LPFC_NPIV_PORT &&
440 vport->cfg_restrict_login)) {
441
442 /* In order to preserve RPIs, we want to cleanup
443 * the default RPI the firmware created to rcv
444 * this ELS request. The only way to do this is
445 * to register, then unregister the RPI.
446 */
447 spin_lock_irq(shost->host_lock);
448 ndlp->nlp_flag |= NLP_RM_DFLT_RPI;
449 spin_unlock_irq(shost->host_lock);
450 stat.un.b.lsRjtRsnCode = LSRJT_INVALID_CMD;
451 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
452 rc = lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb,
453 ndlp, mbox);
454 if (rc)
455 mempool_free(mbox, phba->mbox_mem_pool);
456 return 1;
457 }
458 rc = lpfc_els_rsp_acc(vport, ELS_CMD_PLOGI, cmdiocb, ndlp, mbox);
459 if (rc)
460 mempool_free(mbox, phba->mbox_mem_pool);
461 return 1;
462 out:
463 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
464 stat.un.b.lsRjtRsnCodeExp = LSEXP_OUT_OF_RESOURCE;
465 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
466 return 0;
467 }
468
469 /**
470 * lpfc_mbx_cmpl_resume_rpi - Resume RPI completion routine
471 * @phba: pointer to lpfc hba data structure.
472 * @mboxq: pointer to mailbox object
473 *
474 * This routine is invoked to issue a completion to a rcv'ed
475 * ADISC or PDISC after the paused RPI has been resumed.
476 **/
477 static void
478 lpfc_mbx_cmpl_resume_rpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
479 {
480 struct lpfc_vport *vport;
481 struct lpfc_iocbq *elsiocb;
482 struct lpfc_nodelist *ndlp;
483 uint32_t cmd;
484
485 elsiocb = (struct lpfc_iocbq *)mboxq->context1;
486 ndlp = (struct lpfc_nodelist *) mboxq->context2;
487 vport = mboxq->vport;
488 cmd = elsiocb->drvrTimeout;
489
490 if (cmd == ELS_CMD_ADISC) {
491 lpfc_els_rsp_adisc_acc(vport, elsiocb, ndlp);
492 } else {
493 lpfc_els_rsp_acc(vport, ELS_CMD_PLOGI, elsiocb,
494 ndlp, NULL);
495 }
496 kfree(elsiocb);
497 mempool_free(mboxq, phba->mbox_mem_pool);
498 }
499
500 static int
501 lpfc_rcv_padisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
502 struct lpfc_iocbq *cmdiocb)
503 {
504 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
505 struct lpfc_iocbq *elsiocb;
506 struct lpfc_dmabuf *pcmd;
507 struct serv_parm *sp;
508 struct lpfc_name *pnn, *ppn;
509 struct ls_rjt stat;
510 ADISC *ap;
511 IOCB_t *icmd;
512 uint32_t *lp;
513 uint32_t cmd;
514
515 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
516 lp = (uint32_t *) pcmd->virt;
517
518 cmd = *lp++;
519 if (cmd == ELS_CMD_ADISC) {
520 ap = (ADISC *) lp;
521 pnn = (struct lpfc_name *) & ap->nodeName;
522 ppn = (struct lpfc_name *) & ap->portName;
523 } else {
524 sp = (struct serv_parm *) lp;
525 pnn = (struct lpfc_name *) & sp->nodeName;
526 ppn = (struct lpfc_name *) & sp->portName;
527 }
528
529 icmd = &cmdiocb->iocb;
530 if (icmd->ulpStatus == 0 && lpfc_check_adisc(vport, ndlp, pnn, ppn)) {
531
532 /*
533 * As soon as we send ACC, the remote NPort can
534 * start sending us data. Thus, for SLI4 we must
535 * resume the RPI before the ACC goes out.
536 */
537 if (vport->phba->sli_rev == LPFC_SLI_REV4) {
538 elsiocb = kmalloc(sizeof(struct lpfc_iocbq),
539 GFP_KERNEL);
540 if (elsiocb) {
541
542 /* Save info from cmd IOCB used in rsp */
543 memcpy((uint8_t *)elsiocb, (uint8_t *)cmdiocb,
544 sizeof(struct lpfc_iocbq));
545
546 /* Save the ELS cmd */
547 elsiocb->drvrTimeout = cmd;
548
549 lpfc_sli4_resume_rpi(ndlp,
550 lpfc_mbx_cmpl_resume_rpi, elsiocb);
551 goto out;
552 }
553 }
554
555 if (cmd == ELS_CMD_ADISC) {
556 lpfc_els_rsp_adisc_acc(vport, cmdiocb, ndlp);
557 } else {
558 lpfc_els_rsp_acc(vport, ELS_CMD_PLOGI, cmdiocb,
559 ndlp, NULL);
560 }
561 out:
562 /* If we are authenticated, move to the proper state */
563 if (ndlp->nlp_type & NLP_FCP_TARGET)
564 lpfc_nlp_set_state(vport, ndlp, NLP_STE_MAPPED_NODE);
565 else
566 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
567
568 return 1;
569 }
570 /* Reject this request because invalid parameters */
571 stat.un.b.lsRjtRsvd0 = 0;
572 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
573 stat.un.b.lsRjtRsnCodeExp = LSEXP_SPARM_OPTIONS;
574 stat.un.b.vendorUnique = 0;
575 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
576
577 /* 1 sec timeout */
578 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ);
579
580 spin_lock_irq(shost->host_lock);
581 ndlp->nlp_flag |= NLP_DELAY_TMO;
582 spin_unlock_irq(shost->host_lock);
583 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
584 ndlp->nlp_prev_state = ndlp->nlp_state;
585 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
586 return 0;
587 }
588
589 static int
590 lpfc_rcv_logo(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
591 struct lpfc_iocbq *cmdiocb, uint32_t els_cmd)
592 {
593 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
594 struct lpfc_hba *phba = vport->phba;
595 struct lpfc_vport **vports;
596 int i, active_vlink_present = 0 ;
597
598 /* Put ndlp in NPR state with 1 sec timeout for plogi, ACC logo */
599 /* Only call LOGO ACC for first LOGO, this avoids sending unnecessary
600 * PLOGIs during LOGO storms from a device.
601 */
602 spin_lock_irq(shost->host_lock);
603 ndlp->nlp_flag |= NLP_LOGO_ACC;
604 spin_unlock_irq(shost->host_lock);
605 if (els_cmd == ELS_CMD_PRLO)
606 lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
607 else
608 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
609 if (ndlp->nlp_DID == Fabric_DID) {
610 if (vport->port_state <= LPFC_FDISC)
611 goto out;
612 lpfc_linkdown_port(vport);
613 spin_lock_irq(shost->host_lock);
614 vport->fc_flag |= FC_VPORT_LOGO_RCVD;
615 spin_unlock_irq(shost->host_lock);
616 vports = lpfc_create_vport_work_array(phba);
617 if (vports) {
618 for (i = 0; i <= phba->max_vports && vports[i] != NULL;
619 i++) {
620 if ((!(vports[i]->fc_flag &
621 FC_VPORT_LOGO_RCVD)) &&
622 (vports[i]->port_state > LPFC_FDISC)) {
623 active_vlink_present = 1;
624 break;
625 }
626 }
627 lpfc_destroy_vport_work_array(phba, vports);
628 }
629
630 if (active_vlink_present) {
631 /*
632 * If there are other active VLinks present,
633 * re-instantiate the Vlink using FDISC.
634 */
635 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ);
636 spin_lock_irq(shost->host_lock);
637 ndlp->nlp_flag |= NLP_DELAY_TMO;
638 spin_unlock_irq(shost->host_lock);
639 ndlp->nlp_last_elscmd = ELS_CMD_FDISC;
640 vport->port_state = LPFC_FDISC;
641 } else {
642 spin_lock_irq(shost->host_lock);
643 phba->pport->fc_flag &= ~FC_LOGO_RCVD_DID_CHNG;
644 spin_unlock_irq(shost->host_lock);
645 lpfc_retry_pport_discovery(phba);
646 }
647 } else if ((!(ndlp->nlp_type & NLP_FABRIC) &&
648 ((ndlp->nlp_type & NLP_FCP_TARGET) ||
649 !(ndlp->nlp_type & NLP_FCP_INITIATOR))) ||
650 (ndlp->nlp_state == NLP_STE_ADISC_ISSUE)) {
651 /* Only try to re-login if this is NOT a Fabric Node */
652 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ * 1);
653 spin_lock_irq(shost->host_lock);
654 ndlp->nlp_flag |= NLP_DELAY_TMO;
655 spin_unlock_irq(shost->host_lock);
656
657 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
658 }
659 out:
660 ndlp->nlp_prev_state = ndlp->nlp_state;
661 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
662
663 spin_lock_irq(shost->host_lock);
664 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
665 spin_unlock_irq(shost->host_lock);
666 /* The driver has to wait until the ACC completes before it continues
667 * processing the LOGO. The action will resume in
668 * lpfc_cmpl_els_logo_acc routine. Since part of processing includes an
669 * unreg_login, the driver waits so the ACC does not get aborted.
670 */
671 return 0;
672 }
673
674 static void
675 lpfc_rcv_prli(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
676 struct lpfc_iocbq *cmdiocb)
677 {
678 struct lpfc_dmabuf *pcmd;
679 uint32_t *lp;
680 PRLI *npr;
681 struct fc_rport *rport = ndlp->rport;
682 u32 roles;
683
684 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
685 lp = (uint32_t *) pcmd->virt;
686 npr = (PRLI *) ((uint8_t *) lp + sizeof (uint32_t));
687
688 ndlp->nlp_type &= ~(NLP_FCP_TARGET | NLP_FCP_INITIATOR);
689 ndlp->nlp_fcp_info &= ~NLP_FCP_2_DEVICE;
690 if (npr->prliType == PRLI_FCP_TYPE) {
691 if (npr->initiatorFunc)
692 ndlp->nlp_type |= NLP_FCP_INITIATOR;
693 if (npr->targetFunc)
694 ndlp->nlp_type |= NLP_FCP_TARGET;
695 if (npr->Retry)
696 ndlp->nlp_fcp_info |= NLP_FCP_2_DEVICE;
697 }
698 if (rport) {
699 /* We need to update the rport role values */
700 roles = FC_RPORT_ROLE_UNKNOWN;
701 if (ndlp->nlp_type & NLP_FCP_INITIATOR)
702 roles |= FC_RPORT_ROLE_FCP_INITIATOR;
703 if (ndlp->nlp_type & NLP_FCP_TARGET)
704 roles |= FC_RPORT_ROLE_FCP_TARGET;
705
706 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
707 "rport rolechg: role:x%x did:x%x flg:x%x",
708 roles, ndlp->nlp_DID, ndlp->nlp_flag);
709
710 fc_remote_port_rolechg(rport, roles);
711 }
712 }
713
714 static uint32_t
715 lpfc_disc_set_adisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
716 {
717 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
718
719 if (!(ndlp->nlp_flag & NLP_RPI_REGISTERED)) {
720 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
721 return 0;
722 }
723
724 if (!(vport->fc_flag & FC_PT2PT)) {
725 /* Check config parameter use-adisc or FCP-2 */
726 if ((vport->cfg_use_adisc && (vport->fc_flag & FC_RSCN_MODE)) ||
727 ((ndlp->nlp_fcp_info & NLP_FCP_2_DEVICE) &&
728 (ndlp->nlp_type & NLP_FCP_TARGET))) {
729 spin_lock_irq(shost->host_lock);
730 ndlp->nlp_flag |= NLP_NPR_ADISC;
731 spin_unlock_irq(shost->host_lock);
732 return 1;
733 }
734 }
735 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
736 lpfc_unreg_rpi(vport, ndlp);
737 return 0;
738 }
739
740 /**
741 * lpfc_release_rpi - Release a RPI by issuing unreg_login mailbox cmd.
742 * @phba : Pointer to lpfc_hba structure.
743 * @vport: Pointer to lpfc_vport structure.
744 * @rpi : rpi to be release.
745 *
746 * This function will send a unreg_login mailbox command to the firmware
747 * to release a rpi.
748 **/
749 void
750 lpfc_release_rpi(struct lpfc_hba *phba,
751 struct lpfc_vport *vport,
752 uint16_t rpi)
753 {
754 LPFC_MBOXQ_t *pmb;
755 int rc;
756
757 pmb = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool,
758 GFP_KERNEL);
759 if (!pmb)
760 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
761 "2796 mailbox memory allocation failed \n");
762 else {
763 lpfc_unreg_login(phba, vport->vpi, rpi, pmb);
764 pmb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
765 rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);
766 if (rc == MBX_NOT_FINISHED)
767 mempool_free(pmb, phba->mbox_mem_pool);
768 }
769 }
770
771 static uint32_t
772 lpfc_disc_illegal(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
773 void *arg, uint32_t evt)
774 {
775 struct lpfc_hba *phba;
776 LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg;
777 MAILBOX_t *mb;
778 uint16_t rpi;
779
780 phba = vport->phba;
781 /* Release the RPI if reglogin completing */
782 if (!(phba->pport->load_flag & FC_UNLOADING) &&
783 (evt == NLP_EVT_CMPL_REG_LOGIN) &&
784 (!pmb->u.mb.mbxStatus)) {
785 mb = &pmb->u.mb;
786 rpi = pmb->u.mb.un.varWords[0];
787 lpfc_release_rpi(phba, vport, rpi);
788 }
789 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
790 "0271 Illegal State Transition: node x%x "
791 "event x%x, state x%x Data: x%x x%x\n",
792 ndlp->nlp_DID, evt, ndlp->nlp_state, ndlp->nlp_rpi,
793 ndlp->nlp_flag);
794 return ndlp->nlp_state;
795 }
796
797 static uint32_t
798 lpfc_cmpl_plogi_illegal(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
799 void *arg, uint32_t evt)
800 {
801 /* This transition is only legal if we previously
802 * rcv'ed a PLOGI. Since we don't want 2 discovery threads
803 * working on the same NPortID, do nothing for this thread
804 * to stop it.
805 */
806 if (!(ndlp->nlp_flag & NLP_RCV_PLOGI)) {
807 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
808 "0272 Illegal State Transition: node x%x "
809 "event x%x, state x%x Data: x%x x%x\n",
810 ndlp->nlp_DID, evt, ndlp->nlp_state, ndlp->nlp_rpi,
811 ndlp->nlp_flag);
812 }
813 return ndlp->nlp_state;
814 }
815
816 /* Start of Discovery State Machine routines */
817
818 static uint32_t
819 lpfc_rcv_plogi_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
820 void *arg, uint32_t evt)
821 {
822 struct lpfc_iocbq *cmdiocb;
823
824 cmdiocb = (struct lpfc_iocbq *) arg;
825
826 if (lpfc_rcv_plogi(vport, ndlp, cmdiocb)) {
827 return ndlp->nlp_state;
828 }
829 return NLP_STE_FREED_NODE;
830 }
831
832 static uint32_t
833 lpfc_rcv_els_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
834 void *arg, uint32_t evt)
835 {
836 lpfc_issue_els_logo(vport, ndlp, 0);
837 return ndlp->nlp_state;
838 }
839
840 static uint32_t
841 lpfc_rcv_logo_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
842 void *arg, uint32_t evt)
843 {
844 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
845 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
846
847 spin_lock_irq(shost->host_lock);
848 ndlp->nlp_flag |= NLP_LOGO_ACC;
849 spin_unlock_irq(shost->host_lock);
850 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
851
852 return ndlp->nlp_state;
853 }
854
855 static uint32_t
856 lpfc_cmpl_logo_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
857 void *arg, uint32_t evt)
858 {
859 return NLP_STE_FREED_NODE;
860 }
861
862 static uint32_t
863 lpfc_device_rm_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
864 void *arg, uint32_t evt)
865 {
866 return NLP_STE_FREED_NODE;
867 }
868
869 static uint32_t
870 lpfc_device_recov_unused_node(struct lpfc_vport *vport,
871 struct lpfc_nodelist *ndlp,
872 void *arg, uint32_t evt)
873 {
874 return ndlp->nlp_state;
875 }
876
877 static uint32_t
878 lpfc_rcv_plogi_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
879 void *arg, uint32_t evt)
880 {
881 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
882 struct lpfc_hba *phba = vport->phba;
883 struct lpfc_iocbq *cmdiocb = arg;
884 struct lpfc_dmabuf *pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
885 uint32_t *lp = (uint32_t *) pcmd->virt;
886 struct serv_parm *sp = (struct serv_parm *) (lp + 1);
887 struct ls_rjt stat;
888 int port_cmp;
889
890 memset(&stat, 0, sizeof (struct ls_rjt));
891
892 /* For a PLOGI, we only accept if our portname is less
893 * than the remote portname.
894 */
895 phba->fc_stat.elsLogiCol++;
896 port_cmp = memcmp(&vport->fc_portname, &sp->portName,
897 sizeof(struct lpfc_name));
898
899 if (port_cmp >= 0) {
900 /* Reject this request because the remote node will accept
901 ours */
902 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
903 stat.un.b.lsRjtRsnCodeExp = LSEXP_CMD_IN_PROGRESS;
904 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
905 NULL);
906 } else {
907 if (lpfc_rcv_plogi(vport, ndlp, cmdiocb) &&
908 (ndlp->nlp_flag & NLP_NPR_2B_DISC) &&
909 (vport->num_disc_nodes)) {
910 spin_lock_irq(shost->host_lock);
911 ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
912 spin_unlock_irq(shost->host_lock);
913 /* Check if there are more PLOGIs to be sent */
914 lpfc_more_plogi(vport);
915 if (vport->num_disc_nodes == 0) {
916 spin_lock_irq(shost->host_lock);
917 vport->fc_flag &= ~FC_NDISC_ACTIVE;
918 spin_unlock_irq(shost->host_lock);
919 lpfc_can_disctmo(vport);
920 lpfc_end_rscn(vport);
921 }
922 }
923 } /* If our portname was less */
924
925 return ndlp->nlp_state;
926 }
927
928 static uint32_t
929 lpfc_rcv_prli_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
930 void *arg, uint32_t evt)
931 {
932 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
933 struct ls_rjt stat;
934
935 memset(&stat, 0, sizeof (struct ls_rjt));
936 stat.un.b.lsRjtRsnCode = LSRJT_LOGICAL_BSY;
937 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
938 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
939 return ndlp->nlp_state;
940 }
941
942 static uint32_t
943 lpfc_rcv_logo_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
944 void *arg, uint32_t evt)
945 {
946 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
947
948 /* software abort outstanding PLOGI */
949 lpfc_els_abort(vport->phba, ndlp);
950
951 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
952 return ndlp->nlp_state;
953 }
954
955 static uint32_t
956 lpfc_rcv_els_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
957 void *arg, uint32_t evt)
958 {
959 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
960 struct lpfc_hba *phba = vport->phba;
961 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
962
963 /* software abort outstanding PLOGI */
964 lpfc_els_abort(phba, ndlp);
965
966 if (evt == NLP_EVT_RCV_LOGO) {
967 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
968 } else {
969 lpfc_issue_els_logo(vport, ndlp, 0);
970 }
971
972 /* Put ndlp in npr state set plogi timer for 1 sec */
973 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ * 1);
974 spin_lock_irq(shost->host_lock);
975 ndlp->nlp_flag |= NLP_DELAY_TMO;
976 spin_unlock_irq(shost->host_lock);
977 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
978 ndlp->nlp_prev_state = NLP_STE_PLOGI_ISSUE;
979 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
980
981 return ndlp->nlp_state;
982 }
983
984 static uint32_t
985 lpfc_cmpl_plogi_plogi_issue(struct lpfc_vport *vport,
986 struct lpfc_nodelist *ndlp,
987 void *arg,
988 uint32_t evt)
989 {
990 struct lpfc_hba *phba = vport->phba;
991 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
992 struct lpfc_iocbq *cmdiocb, *rspiocb;
993 struct lpfc_dmabuf *pcmd, *prsp, *mp;
994 uint32_t *lp;
995 IOCB_t *irsp;
996 struct serv_parm *sp;
997 LPFC_MBOXQ_t *mbox;
998
999 cmdiocb = (struct lpfc_iocbq *) arg;
1000 rspiocb = cmdiocb->context_un.rsp_iocb;
1001
1002 if (ndlp->nlp_flag & NLP_ACC_REGLOGIN) {
1003 /* Recovery from PLOGI collision logic */
1004 return ndlp->nlp_state;
1005 }
1006
1007 irsp = &rspiocb->iocb;
1008
1009 if (irsp->ulpStatus)
1010 goto out;
1011
1012 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
1013
1014 prsp = list_get_first(&pcmd->list, struct lpfc_dmabuf, list);
1015
1016 lp = (uint32_t *) prsp->virt;
1017 sp = (struct serv_parm *) ((uint8_t *) lp + sizeof (uint32_t));
1018
1019 /* Some switches have FDMI servers returning 0 for WWN */
1020 if ((ndlp->nlp_DID != FDMI_DID) &&
1021 (wwn_to_u64(sp->portName.u.wwn) == 0 ||
1022 wwn_to_u64(sp->nodeName.u.wwn) == 0)) {
1023 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
1024 "0142 PLOGI RSP: Invalid WWN.\n");
1025 goto out;
1026 }
1027 if (!lpfc_check_sparm(vport, ndlp, sp, CLASS3, 0))
1028 goto out;
1029 /* PLOGI chkparm OK */
1030 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
1031 "0121 PLOGI chkparm OK Data: x%x x%x x%x x%x\n",
1032 ndlp->nlp_DID, ndlp->nlp_state,
1033 ndlp->nlp_flag, ndlp->nlp_rpi);
1034 if (vport->cfg_fcp_class == 2 && (sp->cls2.classValid))
1035 ndlp->nlp_fcp_info |= CLASS2;
1036 else
1037 ndlp->nlp_fcp_info |= CLASS3;
1038
1039 ndlp->nlp_class_sup = 0;
1040 if (sp->cls1.classValid)
1041 ndlp->nlp_class_sup |= FC_COS_CLASS1;
1042 if (sp->cls2.classValid)
1043 ndlp->nlp_class_sup |= FC_COS_CLASS2;
1044 if (sp->cls3.classValid)
1045 ndlp->nlp_class_sup |= FC_COS_CLASS3;
1046 if (sp->cls4.classValid)
1047 ndlp->nlp_class_sup |= FC_COS_CLASS4;
1048 ndlp->nlp_maxframe =
1049 ((sp->cmn.bbRcvSizeMsb & 0x0F) << 8) | sp->cmn.bbRcvSizeLsb;
1050
1051 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1052 if (!mbox) {
1053 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
1054 "0133 PLOGI: no memory for reg_login "
1055 "Data: x%x x%x x%x x%x\n",
1056 ndlp->nlp_DID, ndlp->nlp_state,
1057 ndlp->nlp_flag, ndlp->nlp_rpi);
1058 goto out;
1059 }
1060
1061 lpfc_unreg_rpi(vport, ndlp);
1062
1063 if (lpfc_reg_rpi(phba, vport->vpi, irsp->un.elsreq64.remoteID,
1064 (uint8_t *) sp, mbox, ndlp->nlp_rpi) == 0) {
1065 switch (ndlp->nlp_DID) {
1066 case NameServer_DID:
1067 mbox->mbox_cmpl = lpfc_mbx_cmpl_ns_reg_login;
1068 break;
1069 case FDMI_DID:
1070 mbox->mbox_cmpl = lpfc_mbx_cmpl_fdmi_reg_login;
1071 break;
1072 default:
1073 ndlp->nlp_flag |= NLP_REG_LOGIN_SEND;
1074 mbox->mbox_cmpl = lpfc_mbx_cmpl_reg_login;
1075 }
1076 mbox->context2 = lpfc_nlp_get(ndlp);
1077 mbox->vport = vport;
1078 if (lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT)
1079 != MBX_NOT_FINISHED) {
1080 lpfc_nlp_set_state(vport, ndlp,
1081 NLP_STE_REG_LOGIN_ISSUE);
1082 return ndlp->nlp_state;
1083 }
1084 if (ndlp->nlp_flag & NLP_REG_LOGIN_SEND)
1085 ndlp->nlp_flag &= ~NLP_REG_LOGIN_SEND;
1086 /* decrement node reference count to the failed mbox
1087 * command
1088 */
1089 lpfc_nlp_put(ndlp);
1090 mp = (struct lpfc_dmabuf *) mbox->context1;
1091 lpfc_mbuf_free(phba, mp->virt, mp->phys);
1092 kfree(mp);
1093 mempool_free(mbox, phba->mbox_mem_pool);
1094
1095 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
1096 "0134 PLOGI: cannot issue reg_login "
1097 "Data: x%x x%x x%x x%x\n",
1098 ndlp->nlp_DID, ndlp->nlp_state,
1099 ndlp->nlp_flag, ndlp->nlp_rpi);
1100 } else {
1101 mempool_free(mbox, phba->mbox_mem_pool);
1102
1103 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
1104 "0135 PLOGI: cannot format reg_login "
1105 "Data: x%x x%x x%x x%x\n",
1106 ndlp->nlp_DID, ndlp->nlp_state,
1107 ndlp->nlp_flag, ndlp->nlp_rpi);
1108 }
1109
1110
1111 out:
1112 if (ndlp->nlp_DID == NameServer_DID) {
1113 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
1114 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
1115 "0261 Cannot Register NameServer login\n");
1116 }
1117
1118 /*
1119 ** In case the node reference counter does not go to zero, ensure that
1120 ** the stale state for the node is not processed.
1121 */
1122
1123 ndlp->nlp_prev_state = ndlp->nlp_state;
1124 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1125 spin_lock_irq(shost->host_lock);
1126 ndlp->nlp_flag |= NLP_DEFER_RM;
1127 spin_unlock_irq(shost->host_lock);
1128 return NLP_STE_FREED_NODE;
1129 }
1130
1131 static uint32_t
1132 lpfc_cmpl_logo_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1133 void *arg, uint32_t evt)
1134 {
1135 return ndlp->nlp_state;
1136 }
1137
1138 static uint32_t
1139 lpfc_cmpl_reglogin_plogi_issue(struct lpfc_vport *vport,
1140 struct lpfc_nodelist *ndlp, void *arg, uint32_t evt)
1141 {
1142 struct lpfc_hba *phba;
1143 LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg;
1144 MAILBOX_t *mb = &pmb->u.mb;
1145 uint16_t rpi;
1146
1147 phba = vport->phba;
1148 /* Release the RPI */
1149 if (!(phba->pport->load_flag & FC_UNLOADING) &&
1150 !mb->mbxStatus) {
1151 rpi = pmb->u.mb.un.varWords[0];
1152 lpfc_release_rpi(phba, vport, rpi);
1153 }
1154 return ndlp->nlp_state;
1155 }
1156
1157 static uint32_t
1158 lpfc_device_rm_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1159 void *arg, uint32_t evt)
1160 {
1161 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1162
1163 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1164 spin_lock_irq(shost->host_lock);
1165 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1166 spin_unlock_irq(shost->host_lock);
1167 return ndlp->nlp_state;
1168 } else {
1169 /* software abort outstanding PLOGI */
1170 lpfc_els_abort(vport->phba, ndlp);
1171
1172 lpfc_drop_node(vport, ndlp);
1173 return NLP_STE_FREED_NODE;
1174 }
1175 }
1176
1177 static uint32_t
1178 lpfc_device_recov_plogi_issue(struct lpfc_vport *vport,
1179 struct lpfc_nodelist *ndlp,
1180 void *arg,
1181 uint32_t evt)
1182 {
1183 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1184 struct lpfc_hba *phba = vport->phba;
1185
1186 /* Don't do anything that will mess up processing of the
1187 * previous RSCN.
1188 */
1189 if (vport->fc_flag & FC_RSCN_DEFERRED)
1190 return ndlp->nlp_state;
1191
1192 /* software abort outstanding PLOGI */
1193 lpfc_els_abort(phba, ndlp);
1194
1195 ndlp->nlp_prev_state = NLP_STE_PLOGI_ISSUE;
1196 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1197 spin_lock_irq(shost->host_lock);
1198 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1199 spin_unlock_irq(shost->host_lock);
1200
1201 return ndlp->nlp_state;
1202 }
1203
1204 static uint32_t
1205 lpfc_rcv_plogi_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1206 void *arg, uint32_t evt)
1207 {
1208 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1209 struct lpfc_hba *phba = vport->phba;
1210 struct lpfc_iocbq *cmdiocb;
1211
1212 /* software abort outstanding ADISC */
1213 lpfc_els_abort(phba, ndlp);
1214
1215 cmdiocb = (struct lpfc_iocbq *) arg;
1216
1217 if (lpfc_rcv_plogi(vport, ndlp, cmdiocb)) {
1218 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1219 spin_lock_irq(shost->host_lock);
1220 ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
1221 spin_unlock_irq(shost->host_lock);
1222 if (vport->num_disc_nodes)
1223 lpfc_more_adisc(vport);
1224 }
1225 return ndlp->nlp_state;
1226 }
1227 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1228 lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
1229 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
1230
1231 return ndlp->nlp_state;
1232 }
1233
1234 static uint32_t
1235 lpfc_rcv_prli_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1236 void *arg, uint32_t evt)
1237 {
1238 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1239
1240 lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1241 return ndlp->nlp_state;
1242 }
1243
1244 static uint32_t
1245 lpfc_rcv_logo_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1246 void *arg, uint32_t evt)
1247 {
1248 struct lpfc_hba *phba = vport->phba;
1249 struct lpfc_iocbq *cmdiocb;
1250
1251 cmdiocb = (struct lpfc_iocbq *) arg;
1252
1253 /* software abort outstanding ADISC */
1254 lpfc_els_abort(phba, ndlp);
1255
1256 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1257 return ndlp->nlp_state;
1258 }
1259
1260 static uint32_t
1261 lpfc_rcv_padisc_adisc_issue(struct lpfc_vport *vport,
1262 struct lpfc_nodelist *ndlp,
1263 void *arg, uint32_t evt)
1264 {
1265 struct lpfc_iocbq *cmdiocb;
1266
1267 cmdiocb = (struct lpfc_iocbq *) arg;
1268
1269 lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1270 return ndlp->nlp_state;
1271 }
1272
1273 static uint32_t
1274 lpfc_rcv_prlo_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1275 void *arg, uint32_t evt)
1276 {
1277 struct lpfc_iocbq *cmdiocb;
1278
1279 cmdiocb = (struct lpfc_iocbq *) arg;
1280
1281 /* Treat like rcv logo */
1282 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_PRLO);
1283 return ndlp->nlp_state;
1284 }
1285
1286 static uint32_t
1287 lpfc_cmpl_adisc_adisc_issue(struct lpfc_vport *vport,
1288 struct lpfc_nodelist *ndlp,
1289 void *arg, uint32_t evt)
1290 {
1291 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1292 struct lpfc_hba *phba = vport->phba;
1293 struct lpfc_iocbq *cmdiocb, *rspiocb;
1294 IOCB_t *irsp;
1295 ADISC *ap;
1296 int rc;
1297
1298 cmdiocb = (struct lpfc_iocbq *) arg;
1299 rspiocb = cmdiocb->context_un.rsp_iocb;
1300
1301 ap = (ADISC *)lpfc_check_elscmpl_iocb(phba, cmdiocb, rspiocb);
1302 irsp = &rspiocb->iocb;
1303
1304 if ((irsp->ulpStatus) ||
1305 (!lpfc_check_adisc(vport, ndlp, &ap->nodeName, &ap->portName))) {
1306 /* 1 sec timeout */
1307 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ);
1308 spin_lock_irq(shost->host_lock);
1309 ndlp->nlp_flag |= NLP_DELAY_TMO;
1310 spin_unlock_irq(shost->host_lock);
1311 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
1312
1313 memset(&ndlp->nlp_nodename, 0, sizeof(struct lpfc_name));
1314 memset(&ndlp->nlp_portname, 0, sizeof(struct lpfc_name));
1315
1316 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1317 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1318 lpfc_unreg_rpi(vport, ndlp);
1319 return ndlp->nlp_state;
1320 }
1321
1322 if (phba->sli_rev == LPFC_SLI_REV4) {
1323 rc = lpfc_sli4_resume_rpi(ndlp, NULL, NULL);
1324 if (rc) {
1325 /* Stay in state and retry. */
1326 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1327 return ndlp->nlp_state;
1328 }
1329 }
1330
1331 if (ndlp->nlp_type & NLP_FCP_TARGET) {
1332 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1333 lpfc_nlp_set_state(vport, ndlp, NLP_STE_MAPPED_NODE);
1334 } else {
1335 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1336 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1337 }
1338
1339 return ndlp->nlp_state;
1340 }
1341
1342 static uint32_t
1343 lpfc_device_rm_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1344 void *arg, uint32_t evt)
1345 {
1346 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1347
1348 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1349 spin_lock_irq(shost->host_lock);
1350 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1351 spin_unlock_irq(shost->host_lock);
1352 return ndlp->nlp_state;
1353 } else {
1354 /* software abort outstanding ADISC */
1355 lpfc_els_abort(vport->phba, ndlp);
1356
1357 lpfc_drop_node(vport, ndlp);
1358 return NLP_STE_FREED_NODE;
1359 }
1360 }
1361
1362 static uint32_t
1363 lpfc_device_recov_adisc_issue(struct lpfc_vport *vport,
1364 struct lpfc_nodelist *ndlp,
1365 void *arg,
1366 uint32_t evt)
1367 {
1368 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1369 struct lpfc_hba *phba = vport->phba;
1370
1371 /* Don't do anything that will mess up processing of the
1372 * previous RSCN.
1373 */
1374 if (vport->fc_flag & FC_RSCN_DEFERRED)
1375 return ndlp->nlp_state;
1376
1377 /* software abort outstanding ADISC */
1378 lpfc_els_abort(phba, ndlp);
1379
1380 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1381 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1382 spin_lock_irq(shost->host_lock);
1383 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1384 spin_unlock_irq(shost->host_lock);
1385 lpfc_disc_set_adisc(vport, ndlp);
1386 return ndlp->nlp_state;
1387 }
1388
1389 static uint32_t
1390 lpfc_rcv_plogi_reglogin_issue(struct lpfc_vport *vport,
1391 struct lpfc_nodelist *ndlp,
1392 void *arg,
1393 uint32_t evt)
1394 {
1395 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1396
1397 lpfc_rcv_plogi(vport, ndlp, cmdiocb);
1398 return ndlp->nlp_state;
1399 }
1400
1401 static uint32_t
1402 lpfc_rcv_prli_reglogin_issue(struct lpfc_vport *vport,
1403 struct lpfc_nodelist *ndlp,
1404 void *arg,
1405 uint32_t evt)
1406 {
1407 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1408
1409 lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1410 return ndlp->nlp_state;
1411 }
1412
1413 static uint32_t
1414 lpfc_rcv_logo_reglogin_issue(struct lpfc_vport *vport,
1415 struct lpfc_nodelist *ndlp,
1416 void *arg,
1417 uint32_t evt)
1418 {
1419 struct lpfc_hba *phba = vport->phba;
1420 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1421 LPFC_MBOXQ_t *mb;
1422 LPFC_MBOXQ_t *nextmb;
1423 struct lpfc_dmabuf *mp;
1424
1425 cmdiocb = (struct lpfc_iocbq *) arg;
1426
1427 /* cleanup any ndlp on mbox q waiting for reglogin cmpl */
1428 if ((mb = phba->sli.mbox_active)) {
1429 if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) &&
1430 (ndlp == (struct lpfc_nodelist *) mb->context2)) {
1431 lpfc_nlp_put(ndlp);
1432 mb->context2 = NULL;
1433 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
1434 }
1435 }
1436
1437 spin_lock_irq(&phba->hbalock);
1438 list_for_each_entry_safe(mb, nextmb, &phba->sli.mboxq, list) {
1439 if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) &&
1440 (ndlp == (struct lpfc_nodelist *) mb->context2)) {
1441 mp = (struct lpfc_dmabuf *) (mb->context1);
1442 if (mp) {
1443 __lpfc_mbuf_free(phba, mp->virt, mp->phys);
1444 kfree(mp);
1445 }
1446 lpfc_nlp_put(ndlp);
1447 list_del(&mb->list);
1448 phba->sli.mboxq_cnt--;
1449 mempool_free(mb, phba->mbox_mem_pool);
1450 }
1451 }
1452 spin_unlock_irq(&phba->hbalock);
1453
1454 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1455 return ndlp->nlp_state;
1456 }
1457
1458 static uint32_t
1459 lpfc_rcv_padisc_reglogin_issue(struct lpfc_vport *vport,
1460 struct lpfc_nodelist *ndlp,
1461 void *arg,
1462 uint32_t evt)
1463 {
1464 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1465
1466 lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1467 return ndlp->nlp_state;
1468 }
1469
1470 static uint32_t
1471 lpfc_rcv_prlo_reglogin_issue(struct lpfc_vport *vport,
1472 struct lpfc_nodelist *ndlp,
1473 void *arg,
1474 uint32_t evt)
1475 {
1476 struct lpfc_iocbq *cmdiocb;
1477
1478 cmdiocb = (struct lpfc_iocbq *) arg;
1479 lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
1480 return ndlp->nlp_state;
1481 }
1482
1483 static uint32_t
1484 lpfc_cmpl_reglogin_reglogin_issue(struct lpfc_vport *vport,
1485 struct lpfc_nodelist *ndlp,
1486 void *arg,
1487 uint32_t evt)
1488 {
1489 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1490 LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg;
1491 MAILBOX_t *mb = &pmb->u.mb;
1492 uint32_t did = mb->un.varWords[1];
1493
1494 if (mb->mbxStatus) {
1495 /* RegLogin failed */
1496 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
1497 "0246 RegLogin failed Data: x%x x%x x%x x%x "
1498 "x%x\n",
1499 did, mb->mbxStatus, vport->port_state,
1500 mb->un.varRegLogin.vpi,
1501 mb->un.varRegLogin.rpi);
1502 /*
1503 * If RegLogin failed due to lack of HBA resources do not
1504 * retry discovery.
1505 */
1506 if (mb->mbxStatus == MBXERR_RPI_FULL) {
1507 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1508 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1509 return ndlp->nlp_state;
1510 }
1511
1512 /* Put ndlp in npr state set plogi timer for 1 sec */
1513 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ * 1);
1514 spin_lock_irq(shost->host_lock);
1515 ndlp->nlp_flag |= NLP_DELAY_TMO;
1516 spin_unlock_irq(shost->host_lock);
1517 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
1518
1519 lpfc_issue_els_logo(vport, ndlp, 0);
1520 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1521 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1522 return ndlp->nlp_state;
1523 }
1524
1525 /* SLI4 ports have preallocated logical rpis. */
1526 if (vport->phba->sli_rev < LPFC_SLI_REV4)
1527 ndlp->nlp_rpi = mb->un.varWords[0];
1528
1529 ndlp->nlp_flag |= NLP_RPI_REGISTERED;
1530
1531 /* Only if we are not a fabric nport do we issue PRLI */
1532 if (!(ndlp->nlp_type & NLP_FABRIC)) {
1533 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1534 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PRLI_ISSUE);
1535 lpfc_issue_els_prli(vport, ndlp, 0);
1536 } else {
1537 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1538 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1539 }
1540 return ndlp->nlp_state;
1541 }
1542
1543 static uint32_t
1544 lpfc_device_rm_reglogin_issue(struct lpfc_vport *vport,
1545 struct lpfc_nodelist *ndlp,
1546 void *arg,
1547 uint32_t evt)
1548 {
1549 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1550
1551 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1552 spin_lock_irq(shost->host_lock);
1553 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1554 spin_unlock_irq(shost->host_lock);
1555 return ndlp->nlp_state;
1556 } else {
1557 lpfc_drop_node(vport, ndlp);
1558 return NLP_STE_FREED_NODE;
1559 }
1560 }
1561
1562 static uint32_t
1563 lpfc_device_recov_reglogin_issue(struct lpfc_vport *vport,
1564 struct lpfc_nodelist *ndlp,
1565 void *arg,
1566 uint32_t evt)
1567 {
1568 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1569
1570 /* Don't do anything that will mess up processing of the
1571 * previous RSCN.
1572 */
1573 if (vport->fc_flag & FC_RSCN_DEFERRED)
1574 return ndlp->nlp_state;
1575
1576 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1577 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1578 spin_lock_irq(shost->host_lock);
1579 ndlp->nlp_flag |= NLP_IGNR_REG_CMPL;
1580 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1581 spin_unlock_irq(shost->host_lock);
1582 lpfc_disc_set_adisc(vport, ndlp);
1583 return ndlp->nlp_state;
1584 }
1585
1586 static uint32_t
1587 lpfc_rcv_plogi_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1588 void *arg, uint32_t evt)
1589 {
1590 struct lpfc_iocbq *cmdiocb;
1591
1592 cmdiocb = (struct lpfc_iocbq *) arg;
1593
1594 lpfc_rcv_plogi(vport, ndlp, cmdiocb);
1595 return ndlp->nlp_state;
1596 }
1597
1598 static uint32_t
1599 lpfc_rcv_prli_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1600 void *arg, uint32_t evt)
1601 {
1602 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1603
1604 lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1605 return ndlp->nlp_state;
1606 }
1607
1608 static uint32_t
1609 lpfc_rcv_logo_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1610 void *arg, uint32_t evt)
1611 {
1612 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1613
1614 /* Software abort outstanding PRLI before sending acc */
1615 lpfc_els_abort(vport->phba, ndlp);
1616
1617 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1618 return ndlp->nlp_state;
1619 }
1620
1621 static uint32_t
1622 lpfc_rcv_padisc_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1623 void *arg, uint32_t evt)
1624 {
1625 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1626
1627 lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1628 return ndlp->nlp_state;
1629 }
1630
1631 /* This routine is envoked when we rcv a PRLO request from a nport
1632 * we are logged into. We should send back a PRLO rsp setting the
1633 * appropriate bits.
1634 * NEXT STATE = PRLI_ISSUE
1635 */
1636 static uint32_t
1637 lpfc_rcv_prlo_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1638 void *arg, uint32_t evt)
1639 {
1640 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1641
1642 lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
1643 return ndlp->nlp_state;
1644 }
1645
1646 static uint32_t
1647 lpfc_cmpl_prli_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1648 void *arg, uint32_t evt)
1649 {
1650 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1651 struct lpfc_iocbq *cmdiocb, *rspiocb;
1652 struct lpfc_hba *phba = vport->phba;
1653 IOCB_t *irsp;
1654 PRLI *npr;
1655
1656 cmdiocb = (struct lpfc_iocbq *) arg;
1657 rspiocb = cmdiocb->context_un.rsp_iocb;
1658 npr = (PRLI *)lpfc_check_elscmpl_iocb(phba, cmdiocb, rspiocb);
1659
1660 irsp = &rspiocb->iocb;
1661 if (irsp->ulpStatus) {
1662 if ((vport->port_type == LPFC_NPIV_PORT) &&
1663 vport->cfg_restrict_login) {
1664 goto out;
1665 }
1666 ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
1667 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1668 return ndlp->nlp_state;
1669 }
1670
1671 /* Check out PRLI rsp */
1672 ndlp->nlp_type &= ~(NLP_FCP_TARGET | NLP_FCP_INITIATOR);
1673 ndlp->nlp_fcp_info &= ~NLP_FCP_2_DEVICE;
1674 if ((npr->acceptRspCode == PRLI_REQ_EXECUTED) &&
1675 (npr->prliType == PRLI_FCP_TYPE)) {
1676 if (npr->initiatorFunc)
1677 ndlp->nlp_type |= NLP_FCP_INITIATOR;
1678 if (npr->targetFunc)
1679 ndlp->nlp_type |= NLP_FCP_TARGET;
1680 if (npr->Retry)
1681 ndlp->nlp_fcp_info |= NLP_FCP_2_DEVICE;
1682 }
1683 if (!(ndlp->nlp_type & NLP_FCP_TARGET) &&
1684 (vport->port_type == LPFC_NPIV_PORT) &&
1685 vport->cfg_restrict_login) {
1686 out:
1687 spin_lock_irq(shost->host_lock);
1688 ndlp->nlp_flag |= NLP_TARGET_REMOVE;
1689 spin_unlock_irq(shost->host_lock);
1690 lpfc_issue_els_logo(vport, ndlp, 0);
1691
1692 ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
1693 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1694 return ndlp->nlp_state;
1695 }
1696
1697 ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
1698 if (ndlp->nlp_type & NLP_FCP_TARGET)
1699 lpfc_nlp_set_state(vport, ndlp, NLP_STE_MAPPED_NODE);
1700 else
1701 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1702 return ndlp->nlp_state;
1703 }
1704
1705 /*! lpfc_device_rm_prli_issue
1706 *
1707 * \pre
1708 * \post
1709 * \param phba
1710 * \param ndlp
1711 * \param arg
1712 * \param evt
1713 * \return uint32_t
1714 *
1715 * \b Description:
1716 * This routine is envoked when we a request to remove a nport we are in the
1717 * process of PRLIing. We should software abort outstanding prli, unreg
1718 * login, send a logout. We will change node state to UNUSED_NODE, put it
1719 * on plogi list so it can be freed when LOGO completes.
1720 *
1721 */
1722
1723 static uint32_t
1724 lpfc_device_rm_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1725 void *arg, uint32_t evt)
1726 {
1727 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1728
1729 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1730 spin_lock_irq(shost->host_lock);
1731 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1732 spin_unlock_irq(shost->host_lock);
1733 return ndlp->nlp_state;
1734 } else {
1735 /* software abort outstanding PLOGI */
1736 lpfc_els_abort(vport->phba, ndlp);
1737
1738 lpfc_drop_node(vport, ndlp);
1739 return NLP_STE_FREED_NODE;
1740 }
1741 }
1742
1743
1744 /*! lpfc_device_recov_prli_issue
1745 *
1746 * \pre
1747 * \post
1748 * \param phba
1749 * \param ndlp
1750 * \param arg
1751 * \param evt
1752 * \return uint32_t
1753 *
1754 * \b Description:
1755 * The routine is envoked when the state of a device is unknown, like
1756 * during a link down. We should remove the nodelist entry from the
1757 * unmapped list, issue a UNREG_LOGIN, do a software abort of the
1758 * outstanding PRLI command, then free the node entry.
1759 */
1760 static uint32_t
1761 lpfc_device_recov_prli_issue(struct lpfc_vport *vport,
1762 struct lpfc_nodelist *ndlp,
1763 void *arg,
1764 uint32_t evt)
1765 {
1766 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1767 struct lpfc_hba *phba = vport->phba;
1768
1769 /* Don't do anything that will mess up processing of the
1770 * previous RSCN.
1771 */
1772 if (vport->fc_flag & FC_RSCN_DEFERRED)
1773 return ndlp->nlp_state;
1774
1775 /* software abort outstanding PRLI */
1776 lpfc_els_abort(phba, ndlp);
1777
1778 ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
1779 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1780 spin_lock_irq(shost->host_lock);
1781 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1782 spin_unlock_irq(shost->host_lock);
1783 lpfc_disc_set_adisc(vport, ndlp);
1784 return ndlp->nlp_state;
1785 }
1786
1787 static uint32_t
1788 lpfc_rcv_plogi_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1789 void *arg, uint32_t evt)
1790 {
1791 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *)arg;
1792 struct ls_rjt stat;
1793
1794 memset(&stat, 0, sizeof(struct ls_rjt));
1795 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
1796 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
1797 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
1798 return ndlp->nlp_state;
1799 }
1800
1801 static uint32_t
1802 lpfc_rcv_prli_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1803 void *arg, uint32_t evt)
1804 {
1805 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *)arg;
1806 struct ls_rjt stat;
1807
1808 memset(&stat, 0, sizeof(struct ls_rjt));
1809 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
1810 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
1811 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
1812 return ndlp->nlp_state;
1813 }
1814
1815 static uint32_t
1816 lpfc_rcv_logo_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1817 void *arg, uint32_t evt)
1818 {
1819 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1820 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *)arg;
1821
1822 spin_lock_irq(shost->host_lock);
1823 ndlp->nlp_flag &= NLP_LOGO_ACC;
1824 spin_unlock_irq(shost->host_lock);
1825 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
1826 return ndlp->nlp_state;
1827 }
1828
1829 static uint32_t
1830 lpfc_rcv_padisc_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1831 void *arg, uint32_t evt)
1832 {
1833 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *)arg;
1834 struct ls_rjt stat;
1835
1836 memset(&stat, 0, sizeof(struct ls_rjt));
1837 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
1838 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
1839 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
1840 return ndlp->nlp_state;
1841 }
1842
1843 static uint32_t
1844 lpfc_rcv_prlo_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1845 void *arg, uint32_t evt)
1846 {
1847 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *)arg;
1848 struct ls_rjt stat;
1849
1850 memset(&stat, 0, sizeof(struct ls_rjt));
1851 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
1852 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
1853 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
1854 return ndlp->nlp_state;
1855 }
1856
1857 static uint32_t
1858 lpfc_cmpl_logo_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1859 void *arg, uint32_t evt)
1860 {
1861 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1862
1863 ndlp->nlp_prev_state = NLP_STE_LOGO_ISSUE;
1864 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1865 spin_lock_irq(shost->host_lock);
1866 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1867 spin_unlock_irq(shost->host_lock);
1868 lpfc_disc_set_adisc(vport, ndlp);
1869 return ndlp->nlp_state;
1870 }
1871
1872 static uint32_t
1873 lpfc_device_rm_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1874 void *arg, uint32_t evt)
1875 {
1876 /*
1877 * Take no action. If a LOGO is outstanding, then possibly DevLoss has
1878 * timed out and is calling for Device Remove. In this case, the LOGO
1879 * must be allowed to complete in state LOGO_ISSUE so that the rpi
1880 * and other NLP flags are correctly cleaned up.
1881 */
1882 return ndlp->nlp_state;
1883 }
1884
1885 static uint32_t
1886 lpfc_device_recov_logo_issue(struct lpfc_vport *vport,
1887 struct lpfc_nodelist *ndlp,
1888 void *arg, uint32_t evt)
1889 {
1890 /*
1891 * Device Recovery events have no meaning for a node with a LOGO
1892 * outstanding. The LOGO has to complete first and handle the
1893 * node from that point.
1894 */
1895 return ndlp->nlp_state;
1896 }
1897
1898 static uint32_t
1899 lpfc_rcv_plogi_unmap_node(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_rcv_plogi(vport, ndlp, cmdiocb);
1905 return ndlp->nlp_state;
1906 }
1907
1908 static uint32_t
1909 lpfc_rcv_prli_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1910 void *arg, uint32_t evt)
1911 {
1912 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1913
1914 lpfc_rcv_prli(vport, ndlp, cmdiocb);
1915 lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1916 return ndlp->nlp_state;
1917 }
1918
1919 static uint32_t
1920 lpfc_rcv_logo_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1921 void *arg, uint32_t evt)
1922 {
1923 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1924
1925 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1926 return ndlp->nlp_state;
1927 }
1928
1929 static uint32_t
1930 lpfc_rcv_padisc_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1931 void *arg, uint32_t evt)
1932 {
1933 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1934
1935 lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1936 return ndlp->nlp_state;
1937 }
1938
1939 static uint32_t
1940 lpfc_rcv_prlo_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1941 void *arg, uint32_t evt)
1942 {
1943 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1944
1945 lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
1946 return ndlp->nlp_state;
1947 }
1948
1949 static uint32_t
1950 lpfc_device_recov_unmap_node(struct lpfc_vport *vport,
1951 struct lpfc_nodelist *ndlp,
1952 void *arg,
1953 uint32_t evt)
1954 {
1955 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1956
1957 ndlp->nlp_prev_state = NLP_STE_UNMAPPED_NODE;
1958 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1959 spin_lock_irq(shost->host_lock);
1960 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1961 spin_unlock_irq(shost->host_lock);
1962 lpfc_disc_set_adisc(vport, ndlp);
1963
1964 return ndlp->nlp_state;
1965 }
1966
1967 static uint32_t
1968 lpfc_rcv_plogi_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1969 void *arg, uint32_t evt)
1970 {
1971 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1972
1973 lpfc_rcv_plogi(vport, ndlp, cmdiocb);
1974 return ndlp->nlp_state;
1975 }
1976
1977 static uint32_t
1978 lpfc_rcv_prli_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1979 void *arg, uint32_t evt)
1980 {
1981 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1982
1983 lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1984 return ndlp->nlp_state;
1985 }
1986
1987 static uint32_t
1988 lpfc_rcv_logo_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1989 void *arg, uint32_t evt)
1990 {
1991 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1992
1993 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1994 return ndlp->nlp_state;
1995 }
1996
1997 static uint32_t
1998 lpfc_rcv_padisc_mapped_node(struct lpfc_vport *vport,
1999 struct lpfc_nodelist *ndlp,
2000 void *arg, uint32_t evt)
2001 {
2002 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2003
2004 lpfc_rcv_padisc(vport, ndlp, cmdiocb);
2005 return ndlp->nlp_state;
2006 }
2007
2008 static uint32_t
2009 lpfc_rcv_prlo_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2010 void *arg, uint32_t evt)
2011 {
2012 struct lpfc_hba *phba = vport->phba;
2013 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2014
2015 /* flush the target */
2016 lpfc_sli_abort_iocb(vport, &phba->sli.ring[phba->sli.fcp_ring],
2017 ndlp->nlp_sid, 0, LPFC_CTX_TGT);
2018
2019 /* Treat like rcv logo */
2020 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_PRLO);
2021 return ndlp->nlp_state;
2022 }
2023
2024 static uint32_t
2025 lpfc_device_recov_mapped_node(struct lpfc_vport *vport,
2026 struct lpfc_nodelist *ndlp,
2027 void *arg,
2028 uint32_t evt)
2029 {
2030 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2031
2032 ndlp->nlp_prev_state = NLP_STE_MAPPED_NODE;
2033 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
2034 spin_lock_irq(shost->host_lock);
2035 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
2036 spin_unlock_irq(shost->host_lock);
2037 lpfc_disc_set_adisc(vport, ndlp);
2038 return ndlp->nlp_state;
2039 }
2040
2041 static uint32_t
2042 lpfc_rcv_plogi_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2043 void *arg, uint32_t evt)
2044 {
2045 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2046 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2047
2048 /* Ignore PLOGI if we have an outstanding LOGO */
2049 if (ndlp->nlp_flag & (NLP_LOGO_SND | NLP_LOGO_ACC))
2050 return ndlp->nlp_state;
2051 if (lpfc_rcv_plogi(vport, ndlp, cmdiocb)) {
2052 lpfc_cancel_retry_delay_tmo(vport, ndlp);
2053 spin_lock_irq(shost->host_lock);
2054 ndlp->nlp_flag &= ~(NLP_NPR_ADISC | NLP_NPR_2B_DISC);
2055 spin_unlock_irq(shost->host_lock);
2056 } else if (!(ndlp->nlp_flag & NLP_NPR_2B_DISC)) {
2057 /* send PLOGI immediately, move to PLOGI issue state */
2058 if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) {
2059 ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
2060 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
2061 lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
2062 }
2063 }
2064 return ndlp->nlp_state;
2065 }
2066
2067 static uint32_t
2068 lpfc_rcv_prli_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2069 void *arg, uint32_t evt)
2070 {
2071 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2072 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2073 struct ls_rjt stat;
2074
2075 memset(&stat, 0, sizeof (struct ls_rjt));
2076 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
2077 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
2078 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
2079
2080 if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) {
2081 if (ndlp->nlp_flag & NLP_NPR_ADISC) {
2082 spin_lock_irq(shost->host_lock);
2083 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
2084 ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
2085 spin_unlock_irq(shost->host_lock);
2086 lpfc_nlp_set_state(vport, ndlp, NLP_STE_ADISC_ISSUE);
2087 lpfc_issue_els_adisc(vport, ndlp, 0);
2088 } else {
2089 ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
2090 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
2091 lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
2092 }
2093 }
2094 return ndlp->nlp_state;
2095 }
2096
2097 static uint32_t
2098 lpfc_rcv_logo_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2099 void *arg, uint32_t evt)
2100 {
2101 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2102
2103 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
2104 return ndlp->nlp_state;
2105 }
2106
2107 static uint32_t
2108 lpfc_rcv_padisc_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2109 void *arg, uint32_t evt)
2110 {
2111 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2112
2113 lpfc_rcv_padisc(vport, ndlp, cmdiocb);
2114 /*
2115 * Do not start discovery if discovery is about to start
2116 * or discovery in progress for this node. Starting discovery
2117 * here will affect the counting of discovery threads.
2118 */
2119 if (!(ndlp->nlp_flag & NLP_DELAY_TMO) &&
2120 !(ndlp->nlp_flag & NLP_NPR_2B_DISC)) {
2121 if (ndlp->nlp_flag & NLP_NPR_ADISC) {
2122 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
2123 ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
2124 lpfc_nlp_set_state(vport, ndlp, NLP_STE_ADISC_ISSUE);
2125 lpfc_issue_els_adisc(vport, ndlp, 0);
2126 } else {
2127 ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
2128 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
2129 lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
2130 }
2131 }
2132 return ndlp->nlp_state;
2133 }
2134
2135 static uint32_t
2136 lpfc_rcv_prlo_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2137 void *arg, uint32_t evt)
2138 {
2139 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2140 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2141
2142 spin_lock_irq(shost->host_lock);
2143 ndlp->nlp_flag |= NLP_LOGO_ACC;
2144 spin_unlock_irq(shost->host_lock);
2145
2146 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
2147
2148 if ((ndlp->nlp_flag & NLP_DELAY_TMO) == 0) {
2149 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ * 1);
2150 spin_lock_irq(shost->host_lock);
2151 ndlp->nlp_flag |= NLP_DELAY_TMO;
2152 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
2153 spin_unlock_irq(shost->host_lock);
2154 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
2155 } else {
2156 spin_lock_irq(shost->host_lock);
2157 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
2158 spin_unlock_irq(shost->host_lock);
2159 }
2160 return ndlp->nlp_state;
2161 }
2162
2163 static uint32_t
2164 lpfc_cmpl_plogi_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2165 void *arg, uint32_t evt)
2166 {
2167 struct lpfc_iocbq *cmdiocb, *rspiocb;
2168 IOCB_t *irsp;
2169 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2170
2171 cmdiocb = (struct lpfc_iocbq *) arg;
2172 rspiocb = cmdiocb->context_un.rsp_iocb;
2173
2174 irsp = &rspiocb->iocb;
2175 if (irsp->ulpStatus) {
2176 spin_lock_irq(shost->host_lock);
2177 ndlp->nlp_flag |= NLP_DEFER_RM;
2178 spin_unlock_irq(shost->host_lock);
2179 return NLP_STE_FREED_NODE;
2180 }
2181 return ndlp->nlp_state;
2182 }
2183
2184 static uint32_t
2185 lpfc_cmpl_prli_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2186 void *arg, uint32_t evt)
2187 {
2188 struct lpfc_iocbq *cmdiocb, *rspiocb;
2189 IOCB_t *irsp;
2190
2191 cmdiocb = (struct lpfc_iocbq *) arg;
2192 rspiocb = cmdiocb->context_un.rsp_iocb;
2193
2194 irsp = &rspiocb->iocb;
2195 if (irsp->ulpStatus && (ndlp->nlp_flag & NLP_NODEV_REMOVE)) {
2196 lpfc_drop_node(vport, ndlp);
2197 return NLP_STE_FREED_NODE;
2198 }
2199 return ndlp->nlp_state;
2200 }
2201
2202 static uint32_t
2203 lpfc_cmpl_logo_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2204 void *arg, uint32_t evt)
2205 {
2206 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2207
2208 /* For the fabric port just clear the fc flags. */
2209 if (ndlp->nlp_DID == Fabric_DID) {
2210 spin_lock_irq(shost->host_lock);
2211 vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP);
2212 spin_unlock_irq(shost->host_lock);
2213 }
2214 lpfc_unreg_rpi(vport, ndlp);
2215 return ndlp->nlp_state;
2216 }
2217
2218 static uint32_t
2219 lpfc_cmpl_adisc_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2220 void *arg, uint32_t evt)
2221 {
2222 struct lpfc_iocbq *cmdiocb, *rspiocb;
2223 IOCB_t *irsp;
2224
2225 cmdiocb = (struct lpfc_iocbq *) arg;
2226 rspiocb = cmdiocb->context_un.rsp_iocb;
2227
2228 irsp = &rspiocb->iocb;
2229 if (irsp->ulpStatus && (ndlp->nlp_flag & NLP_NODEV_REMOVE)) {
2230 lpfc_drop_node(vport, ndlp);
2231 return NLP_STE_FREED_NODE;
2232 }
2233 return ndlp->nlp_state;
2234 }
2235
2236 static uint32_t
2237 lpfc_cmpl_reglogin_npr_node(struct lpfc_vport *vport,
2238 struct lpfc_nodelist *ndlp,
2239 void *arg, uint32_t evt)
2240 {
2241 LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg;
2242 MAILBOX_t *mb = &pmb->u.mb;
2243
2244 if (!mb->mbxStatus) {
2245 /* SLI4 ports have preallocated logical rpis. */
2246 if (vport->phba->sli_rev < LPFC_SLI_REV4)
2247 ndlp->nlp_rpi = mb->un.varWords[0];
2248 ndlp->nlp_flag |= NLP_RPI_REGISTERED;
2249 } else {
2250 if (ndlp->nlp_flag & NLP_NODEV_REMOVE) {
2251 lpfc_drop_node(vport, ndlp);
2252 return NLP_STE_FREED_NODE;
2253 }
2254 }
2255 return ndlp->nlp_state;
2256 }
2257
2258 static uint32_t
2259 lpfc_device_rm_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2260 void *arg, uint32_t evt)
2261 {
2262 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2263
2264 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
2265 spin_lock_irq(shost->host_lock);
2266 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
2267 spin_unlock_irq(shost->host_lock);
2268 return ndlp->nlp_state;
2269 }
2270 lpfc_drop_node(vport, ndlp);
2271 return NLP_STE_FREED_NODE;
2272 }
2273
2274 static uint32_t
2275 lpfc_device_recov_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2276 void *arg, uint32_t evt)
2277 {
2278 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2279
2280 /* Don't do anything that will mess up processing of the
2281 * previous RSCN.
2282 */
2283 if (vport->fc_flag & FC_RSCN_DEFERRED)
2284 return ndlp->nlp_state;
2285
2286 lpfc_cancel_retry_delay_tmo(vport, ndlp);
2287 spin_lock_irq(shost->host_lock);
2288 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
2289 spin_unlock_irq(shost->host_lock);
2290 return ndlp->nlp_state;
2291 }
2292
2293
2294 /* This next section defines the NPort Discovery State Machine */
2295
2296 /* There are 4 different double linked lists nodelist entries can reside on.
2297 * The plogi list and adisc list are used when Link Up discovery or RSCN
2298 * processing is needed. Each list holds the nodes that we will send PLOGI
2299 * or ADISC on. These lists will keep track of what nodes will be effected
2300 * by an RSCN, or a Link Up (Typically, all nodes are effected on Link Up).
2301 * The unmapped_list will contain all nodes that we have successfully logged
2302 * into at the Fibre Channel level. The mapped_list will contain all nodes
2303 * that are mapped FCP targets.
2304 */
2305 /*
2306 * The bind list is a list of undiscovered (potentially non-existent) nodes
2307 * that we have saved binding information on. This information is used when
2308 * nodes transition from the unmapped to the mapped list.
2309 */
2310 /* For UNUSED_NODE state, the node has just been allocated .
2311 * For PLOGI_ISSUE and REG_LOGIN_ISSUE, the node is on
2312 * the PLOGI list. For REG_LOGIN_COMPL, the node is taken off the PLOGI list
2313 * and put on the unmapped list. For ADISC processing, the node is taken off
2314 * the ADISC list and placed on either the mapped or unmapped list (depending
2315 * on its previous state). Once on the unmapped list, a PRLI is issued and the
2316 * state changed to PRLI_ISSUE. When the PRLI completion occurs, the state is
2317 * changed to UNMAPPED_NODE. If the completion indicates a mapped
2318 * node, the node is taken off the unmapped list. The binding list is checked
2319 * for a valid binding, or a binding is automatically assigned. If binding
2320 * assignment is unsuccessful, the node is left on the unmapped list. If
2321 * binding assignment is successful, the associated binding list entry (if
2322 * any) is removed, and the node is placed on the mapped list.
2323 */
2324 /*
2325 * For a Link Down, all nodes on the ADISC, PLOGI, unmapped or mapped
2326 * lists will receive a DEVICE_RECOVERY event. If the linkdown or devloss timers
2327 * expire, all effected nodes will receive a DEVICE_RM event.
2328 */
2329 /*
2330 * For a Link Up or RSCN, all nodes will move from the mapped / unmapped lists
2331 * to either the ADISC or PLOGI list. After a Nameserver query or ALPA loopmap
2332 * check, additional nodes may be added or removed (via DEVICE_RM) to / from
2333 * the PLOGI or ADISC lists. Once the PLOGI and ADISC lists are populated,
2334 * we will first process the ADISC list. 32 entries are processed initially and
2335 * ADISC is initited for each one. Completions / Events for each node are
2336 * funnelled thru the state machine. As each node finishes ADISC processing, it
2337 * starts ADISC for any nodes waiting for ADISC processing. If no nodes are
2338 * waiting, and the ADISC list count is identically 0, then we are done. For
2339 * Link Up discovery, since all nodes on the PLOGI list are UNREG_LOGIN'ed, we
2340 * can issue a CLEAR_LA and reenable Link Events. Next we will process the PLOGI
2341 * list. 32 entries are processed initially and PLOGI is initited for each one.
2342 * Completions / Events for each node are funnelled thru the state machine. As
2343 * each node finishes PLOGI processing, it starts PLOGI for any nodes waiting
2344 * for PLOGI processing. If no nodes are waiting, and the PLOGI list count is
2345 * indentically 0, then we are done. We have now completed discovery / RSCN
2346 * handling. Upon completion, ALL nodes should be on either the mapped or
2347 * unmapped lists.
2348 */
2349
2350 static uint32_t (*lpfc_disc_action[NLP_STE_MAX_STATE * NLP_EVT_MAX_EVENT])
2351 (struct lpfc_vport *, struct lpfc_nodelist *, void *, uint32_t) = {
2352 /* Action routine Event Current State */
2353 lpfc_rcv_plogi_unused_node, /* RCV_PLOGI UNUSED_NODE */
2354 lpfc_rcv_els_unused_node, /* RCV_PRLI */
2355 lpfc_rcv_logo_unused_node, /* RCV_LOGO */
2356 lpfc_rcv_els_unused_node, /* RCV_ADISC */
2357 lpfc_rcv_els_unused_node, /* RCV_PDISC */
2358 lpfc_rcv_els_unused_node, /* RCV_PRLO */
2359 lpfc_disc_illegal, /* CMPL_PLOGI */
2360 lpfc_disc_illegal, /* CMPL_PRLI */
2361 lpfc_cmpl_logo_unused_node, /* CMPL_LOGO */
2362 lpfc_disc_illegal, /* CMPL_ADISC */
2363 lpfc_disc_illegal, /* CMPL_REG_LOGIN */
2364 lpfc_device_rm_unused_node, /* DEVICE_RM */
2365 lpfc_device_recov_unused_node, /* DEVICE_RECOVERY */
2366
2367 lpfc_rcv_plogi_plogi_issue, /* RCV_PLOGI PLOGI_ISSUE */
2368 lpfc_rcv_prli_plogi_issue, /* RCV_PRLI */
2369 lpfc_rcv_logo_plogi_issue, /* RCV_LOGO */
2370 lpfc_rcv_els_plogi_issue, /* RCV_ADISC */
2371 lpfc_rcv_els_plogi_issue, /* RCV_PDISC */
2372 lpfc_rcv_els_plogi_issue, /* RCV_PRLO */
2373 lpfc_cmpl_plogi_plogi_issue, /* CMPL_PLOGI */
2374 lpfc_disc_illegal, /* CMPL_PRLI */
2375 lpfc_cmpl_logo_plogi_issue, /* CMPL_LOGO */
2376 lpfc_disc_illegal, /* CMPL_ADISC */
2377 lpfc_cmpl_reglogin_plogi_issue,/* CMPL_REG_LOGIN */
2378 lpfc_device_rm_plogi_issue, /* DEVICE_RM */
2379 lpfc_device_recov_plogi_issue, /* DEVICE_RECOVERY */
2380
2381 lpfc_rcv_plogi_adisc_issue, /* RCV_PLOGI ADISC_ISSUE */
2382 lpfc_rcv_prli_adisc_issue, /* RCV_PRLI */
2383 lpfc_rcv_logo_adisc_issue, /* RCV_LOGO */
2384 lpfc_rcv_padisc_adisc_issue, /* RCV_ADISC */
2385 lpfc_rcv_padisc_adisc_issue, /* RCV_PDISC */
2386 lpfc_rcv_prlo_adisc_issue, /* RCV_PRLO */
2387 lpfc_disc_illegal, /* CMPL_PLOGI */
2388 lpfc_disc_illegal, /* CMPL_PRLI */
2389 lpfc_disc_illegal, /* CMPL_LOGO */
2390 lpfc_cmpl_adisc_adisc_issue, /* CMPL_ADISC */
2391 lpfc_disc_illegal, /* CMPL_REG_LOGIN */
2392 lpfc_device_rm_adisc_issue, /* DEVICE_RM */
2393 lpfc_device_recov_adisc_issue, /* DEVICE_RECOVERY */
2394
2395 lpfc_rcv_plogi_reglogin_issue, /* RCV_PLOGI REG_LOGIN_ISSUE */
2396 lpfc_rcv_prli_reglogin_issue, /* RCV_PLOGI */
2397 lpfc_rcv_logo_reglogin_issue, /* RCV_LOGO */
2398 lpfc_rcv_padisc_reglogin_issue, /* RCV_ADISC */
2399 lpfc_rcv_padisc_reglogin_issue, /* RCV_PDISC */
2400 lpfc_rcv_prlo_reglogin_issue, /* RCV_PRLO */
2401 lpfc_cmpl_plogi_illegal, /* CMPL_PLOGI */
2402 lpfc_disc_illegal, /* CMPL_PRLI */
2403 lpfc_disc_illegal, /* CMPL_LOGO */
2404 lpfc_disc_illegal, /* CMPL_ADISC */
2405 lpfc_cmpl_reglogin_reglogin_issue,/* CMPL_REG_LOGIN */
2406 lpfc_device_rm_reglogin_issue, /* DEVICE_RM */
2407 lpfc_device_recov_reglogin_issue,/* DEVICE_RECOVERY */
2408
2409 lpfc_rcv_plogi_prli_issue, /* RCV_PLOGI PRLI_ISSUE */
2410 lpfc_rcv_prli_prli_issue, /* RCV_PRLI */
2411 lpfc_rcv_logo_prli_issue, /* RCV_LOGO */
2412 lpfc_rcv_padisc_prli_issue, /* RCV_ADISC */
2413 lpfc_rcv_padisc_prli_issue, /* RCV_PDISC */
2414 lpfc_rcv_prlo_prli_issue, /* RCV_PRLO */
2415 lpfc_cmpl_plogi_illegal, /* CMPL_PLOGI */
2416 lpfc_cmpl_prli_prli_issue, /* CMPL_PRLI */
2417 lpfc_disc_illegal, /* CMPL_LOGO */
2418 lpfc_disc_illegal, /* CMPL_ADISC */
2419 lpfc_disc_illegal, /* CMPL_REG_LOGIN */
2420 lpfc_device_rm_prli_issue, /* DEVICE_RM */
2421 lpfc_device_recov_prli_issue, /* DEVICE_RECOVERY */
2422
2423 lpfc_rcv_plogi_logo_issue, /* RCV_PLOGI LOGO_ISSUE */
2424 lpfc_rcv_prli_logo_issue, /* RCV_PRLI */
2425 lpfc_rcv_logo_logo_issue, /* RCV_LOGO */
2426 lpfc_rcv_padisc_logo_issue, /* RCV_ADISC */
2427 lpfc_rcv_padisc_logo_issue, /* RCV_PDISC */
2428 lpfc_rcv_prlo_logo_issue, /* RCV_PRLO */
2429 lpfc_cmpl_plogi_illegal, /* CMPL_PLOGI */
2430 lpfc_disc_illegal, /* CMPL_PRLI */
2431 lpfc_cmpl_logo_logo_issue, /* CMPL_LOGO */
2432 lpfc_disc_illegal, /* CMPL_ADISC */
2433 lpfc_disc_illegal, /* CMPL_REG_LOGIN */
2434 lpfc_device_rm_logo_issue, /* DEVICE_RM */
2435 lpfc_device_recov_logo_issue, /* DEVICE_RECOVERY */
2436
2437 lpfc_rcv_plogi_unmap_node, /* RCV_PLOGI UNMAPPED_NODE */
2438 lpfc_rcv_prli_unmap_node, /* RCV_PRLI */
2439 lpfc_rcv_logo_unmap_node, /* RCV_LOGO */
2440 lpfc_rcv_padisc_unmap_node, /* RCV_ADISC */
2441 lpfc_rcv_padisc_unmap_node, /* RCV_PDISC */
2442 lpfc_rcv_prlo_unmap_node, /* RCV_PRLO */
2443 lpfc_disc_illegal, /* CMPL_PLOGI */
2444 lpfc_disc_illegal, /* CMPL_PRLI */
2445 lpfc_disc_illegal, /* CMPL_LOGO */
2446 lpfc_disc_illegal, /* CMPL_ADISC */
2447 lpfc_disc_illegal, /* CMPL_REG_LOGIN */
2448 lpfc_disc_illegal, /* DEVICE_RM */
2449 lpfc_device_recov_unmap_node, /* DEVICE_RECOVERY */
2450
2451 lpfc_rcv_plogi_mapped_node, /* RCV_PLOGI MAPPED_NODE */
2452 lpfc_rcv_prli_mapped_node, /* RCV_PRLI */
2453 lpfc_rcv_logo_mapped_node, /* RCV_LOGO */
2454 lpfc_rcv_padisc_mapped_node, /* RCV_ADISC */
2455 lpfc_rcv_padisc_mapped_node, /* RCV_PDISC */
2456 lpfc_rcv_prlo_mapped_node, /* RCV_PRLO */
2457 lpfc_disc_illegal, /* CMPL_PLOGI */
2458 lpfc_disc_illegal, /* CMPL_PRLI */
2459 lpfc_disc_illegal, /* CMPL_LOGO */
2460 lpfc_disc_illegal, /* CMPL_ADISC */
2461 lpfc_disc_illegal, /* CMPL_REG_LOGIN */
2462 lpfc_disc_illegal, /* DEVICE_RM */
2463 lpfc_device_recov_mapped_node, /* DEVICE_RECOVERY */
2464
2465 lpfc_rcv_plogi_npr_node, /* RCV_PLOGI NPR_NODE */
2466 lpfc_rcv_prli_npr_node, /* RCV_PRLI */
2467 lpfc_rcv_logo_npr_node, /* RCV_LOGO */
2468 lpfc_rcv_padisc_npr_node, /* RCV_ADISC */
2469 lpfc_rcv_padisc_npr_node, /* RCV_PDISC */
2470 lpfc_rcv_prlo_npr_node, /* RCV_PRLO */
2471 lpfc_cmpl_plogi_npr_node, /* CMPL_PLOGI */
2472 lpfc_cmpl_prli_npr_node, /* CMPL_PRLI */
2473 lpfc_cmpl_logo_npr_node, /* CMPL_LOGO */
2474 lpfc_cmpl_adisc_npr_node, /* CMPL_ADISC */
2475 lpfc_cmpl_reglogin_npr_node, /* CMPL_REG_LOGIN */
2476 lpfc_device_rm_npr_node, /* DEVICE_RM */
2477 lpfc_device_recov_npr_node, /* DEVICE_RECOVERY */
2478 };
2479
2480 int
2481 lpfc_disc_state_machine(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2482 void *arg, uint32_t evt)
2483 {
2484 uint32_t cur_state, rc;
2485 uint32_t(*func) (struct lpfc_vport *, struct lpfc_nodelist *, void *,
2486 uint32_t);
2487 uint32_t got_ndlp = 0;
2488
2489 if (lpfc_nlp_get(ndlp))
2490 got_ndlp = 1;
2491
2492 cur_state = ndlp->nlp_state;
2493
2494 /* DSM in event <evt> on NPort <nlp_DID> in state <cur_state> */
2495 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
2496 "0211 DSM in event x%x on NPort x%x in "
2497 "state %d Data: x%x\n",
2498 evt, ndlp->nlp_DID, cur_state, ndlp->nlp_flag);
2499
2500 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_DSM,
2501 "DSM in: evt:%d ste:%d did:x%x",
2502 evt, cur_state, ndlp->nlp_DID);
2503
2504 func = lpfc_disc_action[(cur_state * NLP_EVT_MAX_EVENT) + evt];
2505 rc = (func) (vport, ndlp, arg, evt);
2506
2507 /* DSM out state <rc> on NPort <nlp_DID> */
2508 if (got_ndlp) {
2509 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
2510 "0212 DSM out state %d on NPort x%x Data: x%x\n",
2511 rc, ndlp->nlp_DID, ndlp->nlp_flag);
2512
2513 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_DSM,
2514 "DSM out: ste:%d did:x%x flg:x%x",
2515 rc, ndlp->nlp_DID, ndlp->nlp_flag);
2516 /* Decrement the ndlp reference count held for this function */
2517 lpfc_nlp_put(ndlp);
2518 } else {
2519 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
2520 "0213 DSM out state %d on NPort free\n", rc);
2521
2522 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_DSM,
2523 "DSM out: ste:%d did:x%x flg:x%x",
2524 rc, 0, 0);
2525 }
2526
2527 return rc;
2528 }
Linux kernel - Deliverables
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