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[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 spin_lock_irq(shost->host_lock);
1119 ndlp->nlp_flag |= NLP_DEFER_RM;
1120 spin_unlock_irq(shost->host_lock);
1121 return NLP_STE_FREED_NODE;
1122 }
1123
1124 static uint32_t
1125 lpfc_cmpl_logo_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1126 void *arg, uint32_t evt)
1127 {
1128 return ndlp->nlp_state;
1129 }
1130
1131 static uint32_t
1132 lpfc_cmpl_reglogin_plogi_issue(struct lpfc_vport *vport,
1133 struct lpfc_nodelist *ndlp, void *arg, uint32_t evt)
1134 {
1135 struct lpfc_hba *phba;
1136 LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg;
1137 MAILBOX_t *mb = &pmb->u.mb;
1138 uint16_t rpi;
1139
1140 phba = vport->phba;
1141 /* Release the RPI */
1142 if (!(phba->pport->load_flag & FC_UNLOADING) &&
1143 !mb->mbxStatus) {
1144 rpi = pmb->u.mb.un.varWords[0];
1145 lpfc_release_rpi(phba, vport, rpi);
1146 }
1147 return ndlp->nlp_state;
1148 }
1149
1150 static uint32_t
1151 lpfc_device_rm_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1152 void *arg, uint32_t evt)
1153 {
1154 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1155
1156 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1157 spin_lock_irq(shost->host_lock);
1158 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1159 spin_unlock_irq(shost->host_lock);
1160 return ndlp->nlp_state;
1161 } else {
1162 /* software abort outstanding PLOGI */
1163 lpfc_els_abort(vport->phba, ndlp);
1164
1165 lpfc_drop_node(vport, ndlp);
1166 return NLP_STE_FREED_NODE;
1167 }
1168 }
1169
1170 static uint32_t
1171 lpfc_device_recov_plogi_issue(struct lpfc_vport *vport,
1172 struct lpfc_nodelist *ndlp,
1173 void *arg,
1174 uint32_t evt)
1175 {
1176 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1177 struct lpfc_hba *phba = vport->phba;
1178
1179 /* Don't do anything that will mess up processing of the
1180 * previous RSCN.
1181 */
1182 if (vport->fc_flag & FC_RSCN_DEFERRED)
1183 return ndlp->nlp_state;
1184
1185 /* software abort outstanding PLOGI */
1186 lpfc_els_abort(phba, ndlp);
1187
1188 ndlp->nlp_prev_state = NLP_STE_PLOGI_ISSUE;
1189 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1190 spin_lock_irq(shost->host_lock);
1191 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1192 spin_unlock_irq(shost->host_lock);
1193
1194 return ndlp->nlp_state;
1195 }
1196
1197 static uint32_t
1198 lpfc_rcv_plogi_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1199 void *arg, uint32_t evt)
1200 {
1201 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1202 struct lpfc_hba *phba = vport->phba;
1203 struct lpfc_iocbq *cmdiocb;
1204
1205 /* software abort outstanding ADISC */
1206 lpfc_els_abort(phba, ndlp);
1207
1208 cmdiocb = (struct lpfc_iocbq *) arg;
1209
1210 if (lpfc_rcv_plogi(vport, ndlp, cmdiocb)) {
1211 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1212 spin_lock_irq(shost->host_lock);
1213 ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
1214 spin_unlock_irq(shost->host_lock);
1215 if (vport->num_disc_nodes)
1216 lpfc_more_adisc(vport);
1217 }
1218 return ndlp->nlp_state;
1219 }
1220 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1221 lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
1222 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
1223
1224 return ndlp->nlp_state;
1225 }
1226
1227 static uint32_t
1228 lpfc_rcv_prli_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1229 void *arg, uint32_t evt)
1230 {
1231 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1232
1233 lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1234 return ndlp->nlp_state;
1235 }
1236
1237 static uint32_t
1238 lpfc_rcv_logo_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1239 void *arg, uint32_t evt)
1240 {
1241 struct lpfc_hba *phba = vport->phba;
1242 struct lpfc_iocbq *cmdiocb;
1243
1244 cmdiocb = (struct lpfc_iocbq *) arg;
1245
1246 /* software abort outstanding ADISC */
1247 lpfc_els_abort(phba, ndlp);
1248
1249 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1250 return ndlp->nlp_state;
1251 }
1252
1253 static uint32_t
1254 lpfc_rcv_padisc_adisc_issue(struct lpfc_vport *vport,
1255 struct lpfc_nodelist *ndlp,
1256 void *arg, uint32_t evt)
1257 {
1258 struct lpfc_iocbq *cmdiocb;
1259
1260 cmdiocb = (struct lpfc_iocbq *) arg;
1261
1262 lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1263 return ndlp->nlp_state;
1264 }
1265
1266 static uint32_t
1267 lpfc_rcv_prlo_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1268 void *arg, uint32_t evt)
1269 {
1270 struct lpfc_iocbq *cmdiocb;
1271
1272 cmdiocb = (struct lpfc_iocbq *) arg;
1273
1274 /* Treat like rcv logo */
1275 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_PRLO);
1276 return ndlp->nlp_state;
1277 }
1278
1279 static uint32_t
1280 lpfc_cmpl_adisc_adisc_issue(struct lpfc_vport *vport,
1281 struct lpfc_nodelist *ndlp,
1282 void *arg, uint32_t evt)
1283 {
1284 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1285 struct lpfc_hba *phba = vport->phba;
1286 struct lpfc_iocbq *cmdiocb, *rspiocb;
1287 IOCB_t *irsp;
1288 ADISC *ap;
1289 int rc;
1290
1291 cmdiocb = (struct lpfc_iocbq *) arg;
1292 rspiocb = cmdiocb->context_un.rsp_iocb;
1293
1294 ap = (ADISC *)lpfc_check_elscmpl_iocb(phba, cmdiocb, rspiocb);
1295 irsp = &rspiocb->iocb;
1296
1297 if ((irsp->ulpStatus) ||
1298 (!lpfc_check_adisc(vport, ndlp, &ap->nodeName, &ap->portName))) {
1299 /* 1 sec timeout */
1300 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ);
1301 spin_lock_irq(shost->host_lock);
1302 ndlp->nlp_flag |= NLP_DELAY_TMO;
1303 spin_unlock_irq(shost->host_lock);
1304 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
1305
1306 memset(&ndlp->nlp_nodename, 0, sizeof(struct lpfc_name));
1307 memset(&ndlp->nlp_portname, 0, sizeof(struct lpfc_name));
1308
1309 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1310 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1311 lpfc_unreg_rpi(vport, ndlp);
1312 return ndlp->nlp_state;
1313 }
1314
1315 if (phba->sli_rev == LPFC_SLI_REV4) {
1316 rc = lpfc_sli4_resume_rpi(ndlp, NULL, NULL);
1317 if (rc) {
1318 /* Stay in state and retry. */
1319 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1320 return ndlp->nlp_state;
1321 }
1322 }
1323
1324 if (ndlp->nlp_type & NLP_FCP_TARGET) {
1325 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1326 lpfc_nlp_set_state(vport, ndlp, NLP_STE_MAPPED_NODE);
1327 } else {
1328 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1329 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1330 }
1331
1332 return ndlp->nlp_state;
1333 }
1334
1335 static uint32_t
1336 lpfc_device_rm_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1337 void *arg, uint32_t evt)
1338 {
1339 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1340
1341 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1342 spin_lock_irq(shost->host_lock);
1343 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1344 spin_unlock_irq(shost->host_lock);
1345 return ndlp->nlp_state;
1346 } else {
1347 /* software abort outstanding ADISC */
1348 lpfc_els_abort(vport->phba, ndlp);
1349
1350 lpfc_drop_node(vport, ndlp);
1351 return NLP_STE_FREED_NODE;
1352 }
1353 }
1354
1355 static uint32_t
1356 lpfc_device_recov_adisc_issue(struct lpfc_vport *vport,
1357 struct lpfc_nodelist *ndlp,
1358 void *arg,
1359 uint32_t evt)
1360 {
1361 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1362 struct lpfc_hba *phba = vport->phba;
1363
1364 /* Don't do anything that will mess up processing of the
1365 * previous RSCN.
1366 */
1367 if (vport->fc_flag & FC_RSCN_DEFERRED)
1368 return ndlp->nlp_state;
1369
1370 /* software abort outstanding ADISC */
1371 lpfc_els_abort(phba, ndlp);
1372
1373 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1374 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1375 spin_lock_irq(shost->host_lock);
1376 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1377 spin_unlock_irq(shost->host_lock);
1378 lpfc_disc_set_adisc(vport, ndlp);
1379 return ndlp->nlp_state;
1380 }
1381
1382 static uint32_t
1383 lpfc_rcv_plogi_reglogin_issue(struct lpfc_vport *vport,
1384 struct lpfc_nodelist *ndlp,
1385 void *arg,
1386 uint32_t evt)
1387 {
1388 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1389
1390 lpfc_rcv_plogi(vport, ndlp, cmdiocb);
1391 return ndlp->nlp_state;
1392 }
1393
1394 static uint32_t
1395 lpfc_rcv_prli_reglogin_issue(struct lpfc_vport *vport,
1396 struct lpfc_nodelist *ndlp,
1397 void *arg,
1398 uint32_t evt)
1399 {
1400 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1401
1402 lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1403 return ndlp->nlp_state;
1404 }
1405
1406 static uint32_t
1407 lpfc_rcv_logo_reglogin_issue(struct lpfc_vport *vport,
1408 struct lpfc_nodelist *ndlp,
1409 void *arg,
1410 uint32_t evt)
1411 {
1412 struct lpfc_hba *phba = vport->phba;
1413 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1414 LPFC_MBOXQ_t *mb;
1415 LPFC_MBOXQ_t *nextmb;
1416 struct lpfc_dmabuf *mp;
1417
1418 cmdiocb = (struct lpfc_iocbq *) arg;
1419
1420 /* cleanup any ndlp on mbox q waiting for reglogin cmpl */
1421 if ((mb = phba->sli.mbox_active)) {
1422 if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) &&
1423 (ndlp == (struct lpfc_nodelist *) mb->context2)) {
1424 lpfc_nlp_put(ndlp);
1425 mb->context2 = NULL;
1426 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
1427 }
1428 }
1429
1430 spin_lock_irq(&phba->hbalock);
1431 list_for_each_entry_safe(mb, nextmb, &phba->sli.mboxq, list) {
1432 if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) &&
1433 (ndlp == (struct lpfc_nodelist *) mb->context2)) {
1434 mp = (struct lpfc_dmabuf *) (mb->context1);
1435 if (mp) {
1436 __lpfc_mbuf_free(phba, mp->virt, mp->phys);
1437 kfree(mp);
1438 }
1439 lpfc_nlp_put(ndlp);
1440 list_del(&mb->list);
1441 phba->sli.mboxq_cnt--;
1442 mempool_free(mb, phba->mbox_mem_pool);
1443 }
1444 }
1445 spin_unlock_irq(&phba->hbalock);
1446
1447 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1448 return ndlp->nlp_state;
1449 }
1450
1451 static uint32_t
1452 lpfc_rcv_padisc_reglogin_issue(struct lpfc_vport *vport,
1453 struct lpfc_nodelist *ndlp,
1454 void *arg,
1455 uint32_t evt)
1456 {
1457 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1458
1459 lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1460 return ndlp->nlp_state;
1461 }
1462
1463 static uint32_t
1464 lpfc_rcv_prlo_reglogin_issue(struct lpfc_vport *vport,
1465 struct lpfc_nodelist *ndlp,
1466 void *arg,
1467 uint32_t evt)
1468 {
1469 struct lpfc_iocbq *cmdiocb;
1470
1471 cmdiocb = (struct lpfc_iocbq *) arg;
1472 lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
1473 return ndlp->nlp_state;
1474 }
1475
1476 static uint32_t
1477 lpfc_cmpl_reglogin_reglogin_issue(struct lpfc_vport *vport,
1478 struct lpfc_nodelist *ndlp,
1479 void *arg,
1480 uint32_t evt)
1481 {
1482 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1483 LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg;
1484 MAILBOX_t *mb = &pmb->u.mb;
1485 uint32_t did = mb->un.varWords[1];
1486
1487 if (mb->mbxStatus) {
1488 /* RegLogin failed */
1489 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
1490 "0246 RegLogin failed Data: x%x x%x x%x x%x "
1491 "x%x\n",
1492 did, mb->mbxStatus, vport->port_state,
1493 mb->un.varRegLogin.vpi,
1494 mb->un.varRegLogin.rpi);
1495 /*
1496 * If RegLogin failed due to lack of HBA resources do not
1497 * retry discovery.
1498 */
1499 if (mb->mbxStatus == MBXERR_RPI_FULL) {
1500 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1501 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1502 return ndlp->nlp_state;
1503 }
1504
1505 /* Put ndlp in npr state set plogi timer for 1 sec */
1506 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ * 1);
1507 spin_lock_irq(shost->host_lock);
1508 ndlp->nlp_flag |= NLP_DELAY_TMO;
1509 spin_unlock_irq(shost->host_lock);
1510 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
1511
1512 lpfc_issue_els_logo(vport, ndlp, 0);
1513 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1514 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1515 return ndlp->nlp_state;
1516 }
1517
1518 /* SLI4 ports have preallocated logical rpis. */
1519 if (vport->phba->sli_rev < LPFC_SLI_REV4)
1520 ndlp->nlp_rpi = mb->un.varWords[0];
1521
1522 ndlp->nlp_flag |= NLP_RPI_REGISTERED;
1523
1524 /* Only if we are not a fabric nport do we issue PRLI */
1525 if (!(ndlp->nlp_type & NLP_FABRIC)) {
1526 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1527 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PRLI_ISSUE);
1528 lpfc_issue_els_prli(vport, ndlp, 0);
1529 } else {
1530 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1531 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1532 }
1533 return ndlp->nlp_state;
1534 }
1535
1536 static uint32_t
1537 lpfc_device_rm_reglogin_issue(struct lpfc_vport *vport,
1538 struct lpfc_nodelist *ndlp,
1539 void *arg,
1540 uint32_t evt)
1541 {
1542 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1543
1544 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1545 spin_lock_irq(shost->host_lock);
1546 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1547 spin_unlock_irq(shost->host_lock);
1548 return ndlp->nlp_state;
1549 } else {
1550 lpfc_drop_node(vport, ndlp);
1551 return NLP_STE_FREED_NODE;
1552 }
1553 }
1554
1555 static uint32_t
1556 lpfc_device_recov_reglogin_issue(struct lpfc_vport *vport,
1557 struct lpfc_nodelist *ndlp,
1558 void *arg,
1559 uint32_t evt)
1560 {
1561 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1562
1563 /* Don't do anything that will mess up processing of the
1564 * previous RSCN.
1565 */
1566 if (vport->fc_flag & FC_RSCN_DEFERRED)
1567 return ndlp->nlp_state;
1568
1569 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1570 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1571 spin_lock_irq(shost->host_lock);
1572 ndlp->nlp_flag |= NLP_IGNR_REG_CMPL;
1573 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1574 spin_unlock_irq(shost->host_lock);
1575 lpfc_disc_set_adisc(vport, ndlp);
1576 return ndlp->nlp_state;
1577 }
1578
1579 static uint32_t
1580 lpfc_rcv_plogi_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1581 void *arg, uint32_t evt)
1582 {
1583 struct lpfc_iocbq *cmdiocb;
1584
1585 cmdiocb = (struct lpfc_iocbq *) arg;
1586
1587 lpfc_rcv_plogi(vport, ndlp, cmdiocb);
1588 return ndlp->nlp_state;
1589 }
1590
1591 static uint32_t
1592 lpfc_rcv_prli_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1593 void *arg, uint32_t evt)
1594 {
1595 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1596
1597 lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1598 return ndlp->nlp_state;
1599 }
1600
1601 static uint32_t
1602 lpfc_rcv_logo_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1603 void *arg, uint32_t evt)
1604 {
1605 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1606
1607 /* Software abort outstanding PRLI before sending acc */
1608 lpfc_els_abort(vport->phba, ndlp);
1609
1610 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1611 return ndlp->nlp_state;
1612 }
1613
1614 static uint32_t
1615 lpfc_rcv_padisc_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1616 void *arg, uint32_t evt)
1617 {
1618 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1619
1620 lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1621 return ndlp->nlp_state;
1622 }
1623
1624 /* This routine is envoked when we rcv a PRLO request from a nport
1625 * we are logged into. We should send back a PRLO rsp setting the
1626 * appropriate bits.
1627 * NEXT STATE = PRLI_ISSUE
1628 */
1629 static uint32_t
1630 lpfc_rcv_prlo_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1631 void *arg, uint32_t evt)
1632 {
1633 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1634
1635 lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
1636 return ndlp->nlp_state;
1637 }
1638
1639 static uint32_t
1640 lpfc_cmpl_prli_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1641 void *arg, uint32_t evt)
1642 {
1643 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1644 struct lpfc_iocbq *cmdiocb, *rspiocb;
1645 struct lpfc_hba *phba = vport->phba;
1646 IOCB_t *irsp;
1647 PRLI *npr;
1648
1649 cmdiocb = (struct lpfc_iocbq *) arg;
1650 rspiocb = cmdiocb->context_un.rsp_iocb;
1651 npr = (PRLI *)lpfc_check_elscmpl_iocb(phba, cmdiocb, rspiocb);
1652
1653 irsp = &rspiocb->iocb;
1654 if (irsp->ulpStatus) {
1655 if ((vport->port_type == LPFC_NPIV_PORT) &&
1656 vport->cfg_restrict_login) {
1657 goto out;
1658 }
1659 ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
1660 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1661 return ndlp->nlp_state;
1662 }
1663
1664 /* Check out PRLI rsp */
1665 ndlp->nlp_type &= ~(NLP_FCP_TARGET | NLP_FCP_INITIATOR);
1666 ndlp->nlp_fcp_info &= ~NLP_FCP_2_DEVICE;
1667 if ((npr->acceptRspCode == PRLI_REQ_EXECUTED) &&
1668 (npr->prliType == PRLI_FCP_TYPE)) {
1669 if (npr->initiatorFunc)
1670 ndlp->nlp_type |= NLP_FCP_INITIATOR;
1671 if (npr->targetFunc)
1672 ndlp->nlp_type |= NLP_FCP_TARGET;
1673 if (npr->Retry)
1674 ndlp->nlp_fcp_info |= NLP_FCP_2_DEVICE;
1675 }
1676 if (!(ndlp->nlp_type & NLP_FCP_TARGET) &&
1677 (vport->port_type == LPFC_NPIV_PORT) &&
1678 vport->cfg_restrict_login) {
1679 out:
1680 spin_lock_irq(shost->host_lock);
1681 ndlp->nlp_flag |= NLP_TARGET_REMOVE;
1682 spin_unlock_irq(shost->host_lock);
1683 lpfc_issue_els_logo(vport, ndlp, 0);
1684
1685 ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
1686 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1687 return ndlp->nlp_state;
1688 }
1689
1690 ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
1691 if (ndlp->nlp_type & NLP_FCP_TARGET)
1692 lpfc_nlp_set_state(vport, ndlp, NLP_STE_MAPPED_NODE);
1693 else
1694 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1695 return ndlp->nlp_state;
1696 }
1697
1698 /*! lpfc_device_rm_prli_issue
1699 *
1700 * \pre
1701 * \post
1702 * \param phba
1703 * \param ndlp
1704 * \param arg
1705 * \param evt
1706 * \return uint32_t
1707 *
1708 * \b Description:
1709 * This routine is envoked when we a request to remove a nport we are in the
1710 * process of PRLIing. We should software abort outstanding prli, unreg
1711 * login, send a logout. We will change node state to UNUSED_NODE, put it
1712 * on plogi list so it can be freed when LOGO completes.
1713 *
1714 */
1715
1716 static uint32_t
1717 lpfc_device_rm_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1718 void *arg, uint32_t evt)
1719 {
1720 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1721
1722 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1723 spin_lock_irq(shost->host_lock);
1724 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1725 spin_unlock_irq(shost->host_lock);
1726 return ndlp->nlp_state;
1727 } else {
1728 /* software abort outstanding PLOGI */
1729 lpfc_els_abort(vport->phba, ndlp);
1730
1731 lpfc_drop_node(vport, ndlp);
1732 return NLP_STE_FREED_NODE;
1733 }
1734 }
1735
1736
1737 /*! lpfc_device_recov_prli_issue
1738 *
1739 * \pre
1740 * \post
1741 * \param phba
1742 * \param ndlp
1743 * \param arg
1744 * \param evt
1745 * \return uint32_t
1746 *
1747 * \b Description:
1748 * The routine is envoked when the state of a device is unknown, like
1749 * during a link down. We should remove the nodelist entry from the
1750 * unmapped list, issue a UNREG_LOGIN, do a software abort of the
1751 * outstanding PRLI command, then free the node entry.
1752 */
1753 static uint32_t
1754 lpfc_device_recov_prli_issue(struct lpfc_vport *vport,
1755 struct lpfc_nodelist *ndlp,
1756 void *arg,
1757 uint32_t evt)
1758 {
1759 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1760 struct lpfc_hba *phba = vport->phba;
1761
1762 /* Don't do anything that will mess up processing of the
1763 * previous RSCN.
1764 */
1765 if (vport->fc_flag & FC_RSCN_DEFERRED)
1766 return ndlp->nlp_state;
1767
1768 /* software abort outstanding PRLI */
1769 lpfc_els_abort(phba, ndlp);
1770
1771 ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
1772 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1773 spin_lock_irq(shost->host_lock);
1774 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1775 spin_unlock_irq(shost->host_lock);
1776 lpfc_disc_set_adisc(vport, ndlp);
1777 return ndlp->nlp_state;
1778 }
1779
1780 static uint32_t
1781 lpfc_rcv_plogi_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1782 void *arg, uint32_t evt)
1783 {
1784 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *)arg;
1785 struct ls_rjt stat;
1786
1787 memset(&stat, 0, sizeof(struct ls_rjt));
1788 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
1789 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
1790 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
1791 return ndlp->nlp_state;
1792 }
1793
1794 static uint32_t
1795 lpfc_rcv_prli_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1796 void *arg, uint32_t evt)
1797 {
1798 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *)arg;
1799 struct ls_rjt stat;
1800
1801 memset(&stat, 0, sizeof(struct ls_rjt));
1802 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
1803 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
1804 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
1805 return ndlp->nlp_state;
1806 }
1807
1808 static uint32_t
1809 lpfc_rcv_logo_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1810 void *arg, uint32_t evt)
1811 {
1812 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1813 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *)arg;
1814
1815 spin_lock_irq(shost->host_lock);
1816 ndlp->nlp_flag &= NLP_LOGO_ACC;
1817 spin_unlock_irq(shost->host_lock);
1818 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
1819 return ndlp->nlp_state;
1820 }
1821
1822 static uint32_t
1823 lpfc_rcv_padisc_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1824 void *arg, uint32_t evt)
1825 {
1826 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *)arg;
1827 struct ls_rjt stat;
1828
1829 memset(&stat, 0, sizeof(struct ls_rjt));
1830 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
1831 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
1832 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
1833 return ndlp->nlp_state;
1834 }
1835
1836 static uint32_t
1837 lpfc_rcv_prlo_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1838 void *arg, uint32_t evt)
1839 {
1840 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *)arg;
1841 struct ls_rjt stat;
1842
1843 memset(&stat, 0, sizeof(struct ls_rjt));
1844 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
1845 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
1846 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
1847 return ndlp->nlp_state;
1848 }
1849
1850 static uint32_t
1851 lpfc_cmpl_logo_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1852 void *arg, uint32_t evt)
1853 {
1854 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1855
1856 ndlp->nlp_prev_state = NLP_STE_LOGO_ISSUE;
1857 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1858 spin_lock_irq(shost->host_lock);
1859 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1860 spin_unlock_irq(shost->host_lock);
1861 lpfc_disc_set_adisc(vport, ndlp);
1862 return ndlp->nlp_state;
1863 }
1864
1865 static uint32_t
1866 lpfc_device_rm_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1867 void *arg, uint32_t evt)
1868 {
1869 /*
1870 * Take no action. If a LOGO is outstanding, then possibly DevLoss has
1871 * timed out and is calling for Device Remove. In this case, the LOGO
1872 * must be allowed to complete in state LOGO_ISSUE so that the rpi
1873 * and other NLP flags are correctly cleaned up.
1874 */
1875 return ndlp->nlp_state;
1876 }
1877
1878 static uint32_t
1879 lpfc_device_recov_logo_issue(struct lpfc_vport *vport,
1880 struct lpfc_nodelist *ndlp,
1881 void *arg, uint32_t evt)
1882 {
1883 /*
1884 * Device Recovery events have no meaning for a node with a LOGO
1885 * outstanding. The LOGO has to complete first and handle the
1886 * node from that point.
1887 */
1888 return ndlp->nlp_state;
1889 }
1890
1891 static uint32_t
1892 lpfc_rcv_plogi_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1893 void *arg, uint32_t evt)
1894 {
1895 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1896
1897 lpfc_rcv_plogi(vport, ndlp, cmdiocb);
1898 return ndlp->nlp_state;
1899 }
1900
1901 static uint32_t
1902 lpfc_rcv_prli_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1903 void *arg, uint32_t evt)
1904 {
1905 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1906
1907 lpfc_rcv_prli(vport, ndlp, cmdiocb);
1908 lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1909 return ndlp->nlp_state;
1910 }
1911
1912 static uint32_t
1913 lpfc_rcv_logo_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1914 void *arg, uint32_t evt)
1915 {
1916 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1917
1918 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1919 return ndlp->nlp_state;
1920 }
1921
1922 static uint32_t
1923 lpfc_rcv_padisc_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1924 void *arg, uint32_t evt)
1925 {
1926 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1927
1928 lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1929 return ndlp->nlp_state;
1930 }
1931
1932 static uint32_t
1933 lpfc_rcv_prlo_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1934 void *arg, uint32_t evt)
1935 {
1936 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1937
1938 lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
1939 return ndlp->nlp_state;
1940 }
1941
1942 static uint32_t
1943 lpfc_device_recov_unmap_node(struct lpfc_vport *vport,
1944 struct lpfc_nodelist *ndlp,
1945 void *arg,
1946 uint32_t evt)
1947 {
1948 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1949
1950 ndlp->nlp_prev_state = NLP_STE_UNMAPPED_NODE;
1951 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1952 spin_lock_irq(shost->host_lock);
1953 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1954 spin_unlock_irq(shost->host_lock);
1955 lpfc_disc_set_adisc(vport, ndlp);
1956
1957 return ndlp->nlp_state;
1958 }
1959
1960 static uint32_t
1961 lpfc_rcv_plogi_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1962 void *arg, uint32_t evt)
1963 {
1964 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1965
1966 lpfc_rcv_plogi(vport, ndlp, cmdiocb);
1967 return ndlp->nlp_state;
1968 }
1969
1970 static uint32_t
1971 lpfc_rcv_prli_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1972 void *arg, uint32_t evt)
1973 {
1974 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1975
1976 lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1977 return ndlp->nlp_state;
1978 }
1979
1980 static uint32_t
1981 lpfc_rcv_logo_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1982 void *arg, uint32_t evt)
1983 {
1984 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1985
1986 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1987 return ndlp->nlp_state;
1988 }
1989
1990 static uint32_t
1991 lpfc_rcv_padisc_mapped_node(struct lpfc_vport *vport,
1992 struct lpfc_nodelist *ndlp,
1993 void *arg, uint32_t evt)
1994 {
1995 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1996
1997 lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1998 return ndlp->nlp_state;
1999 }
2000
2001 static uint32_t
2002 lpfc_rcv_prlo_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2003 void *arg, uint32_t evt)
2004 {
2005 struct lpfc_hba *phba = vport->phba;
2006 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2007
2008 /* flush the target */
2009 lpfc_sli_abort_iocb(vport, &phba->sli.ring[phba->sli.fcp_ring],
2010 ndlp->nlp_sid, 0, LPFC_CTX_TGT);
2011
2012 /* Treat like rcv logo */
2013 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_PRLO);
2014 return ndlp->nlp_state;
2015 }
2016
2017 static uint32_t
2018 lpfc_device_recov_mapped_node(struct lpfc_vport *vport,
2019 struct lpfc_nodelist *ndlp,
2020 void *arg,
2021 uint32_t evt)
2022 {
2023 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2024
2025 ndlp->nlp_prev_state = NLP_STE_MAPPED_NODE;
2026 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
2027 spin_lock_irq(shost->host_lock);
2028 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
2029 spin_unlock_irq(shost->host_lock);
2030 lpfc_disc_set_adisc(vport, ndlp);
2031 return ndlp->nlp_state;
2032 }
2033
2034 static uint32_t
2035 lpfc_rcv_plogi_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2036 void *arg, uint32_t evt)
2037 {
2038 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2039 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2040
2041 /* Ignore PLOGI if we have an outstanding LOGO */
2042 if (ndlp->nlp_flag & (NLP_LOGO_SND | NLP_LOGO_ACC))
2043 return ndlp->nlp_state;
2044 if (lpfc_rcv_plogi(vport, ndlp, cmdiocb)) {
2045 lpfc_cancel_retry_delay_tmo(vport, ndlp);
2046 spin_lock_irq(shost->host_lock);
2047 ndlp->nlp_flag &= ~(NLP_NPR_ADISC | NLP_NPR_2B_DISC);
2048 spin_unlock_irq(shost->host_lock);
2049 } else if (!(ndlp->nlp_flag & NLP_NPR_2B_DISC)) {
2050 /* send PLOGI immediately, move to PLOGI issue state */
2051 if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) {
2052 ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
2053 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
2054 lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
2055 }
2056 }
2057 return ndlp->nlp_state;
2058 }
2059
2060 static uint32_t
2061 lpfc_rcv_prli_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2062 void *arg, uint32_t evt)
2063 {
2064 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2065 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2066 struct ls_rjt stat;
2067
2068 memset(&stat, 0, sizeof (struct ls_rjt));
2069 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
2070 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
2071 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
2072
2073 if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) {
2074 if (ndlp->nlp_flag & NLP_NPR_ADISC) {
2075 spin_lock_irq(shost->host_lock);
2076 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
2077 ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
2078 spin_unlock_irq(shost->host_lock);
2079 lpfc_nlp_set_state(vport, ndlp, NLP_STE_ADISC_ISSUE);
2080 lpfc_issue_els_adisc(vport, ndlp, 0);
2081 } else {
2082 ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
2083 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
2084 lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
2085 }
2086 }
2087 return ndlp->nlp_state;
2088 }
2089
2090 static uint32_t
2091 lpfc_rcv_logo_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2092 void *arg, uint32_t evt)
2093 {
2094 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2095
2096 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
2097 return ndlp->nlp_state;
2098 }
2099
2100 static uint32_t
2101 lpfc_rcv_padisc_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2102 void *arg, uint32_t evt)
2103 {
2104 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2105
2106 lpfc_rcv_padisc(vport, ndlp, cmdiocb);
2107 /*
2108 * Do not start discovery if discovery is about to start
2109 * or discovery in progress for this node. Starting discovery
2110 * here will affect the counting of discovery threads.
2111 */
2112 if (!(ndlp->nlp_flag & NLP_DELAY_TMO) &&
2113 !(ndlp->nlp_flag & NLP_NPR_2B_DISC)) {
2114 if (ndlp->nlp_flag & NLP_NPR_ADISC) {
2115 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
2116 ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
2117 lpfc_nlp_set_state(vport, ndlp, NLP_STE_ADISC_ISSUE);
2118 lpfc_issue_els_adisc(vport, ndlp, 0);
2119 } else {
2120 ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
2121 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
2122 lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
2123 }
2124 }
2125 return ndlp->nlp_state;
2126 }
2127
2128 static uint32_t
2129 lpfc_rcv_prlo_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2130 void *arg, uint32_t evt)
2131 {
2132 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2133 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2134
2135 spin_lock_irq(shost->host_lock);
2136 ndlp->nlp_flag |= NLP_LOGO_ACC;
2137 spin_unlock_irq(shost->host_lock);
2138
2139 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
2140
2141 if ((ndlp->nlp_flag & NLP_DELAY_TMO) == 0) {
2142 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ * 1);
2143 spin_lock_irq(shost->host_lock);
2144 ndlp->nlp_flag |= NLP_DELAY_TMO;
2145 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
2146 spin_unlock_irq(shost->host_lock);
2147 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
2148 } else {
2149 spin_lock_irq(shost->host_lock);
2150 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
2151 spin_unlock_irq(shost->host_lock);
2152 }
2153 return ndlp->nlp_state;
2154 }
2155
2156 static uint32_t
2157 lpfc_cmpl_plogi_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2158 void *arg, uint32_t evt)
2159 {
2160 struct lpfc_iocbq *cmdiocb, *rspiocb;
2161 IOCB_t *irsp;
2162
2163 cmdiocb = (struct lpfc_iocbq *) arg;
2164 rspiocb = cmdiocb->context_un.rsp_iocb;
2165
2166 irsp = &rspiocb->iocb;
2167 if (irsp->ulpStatus) {
2168 ndlp->nlp_flag |= NLP_DEFER_RM;
2169 return NLP_STE_FREED_NODE;
2170 }
2171 return ndlp->nlp_state;
2172 }
2173
2174 static uint32_t
2175 lpfc_cmpl_prli_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2176 void *arg, uint32_t evt)
2177 {
2178 struct lpfc_iocbq *cmdiocb, *rspiocb;
2179 IOCB_t *irsp;
2180
2181 cmdiocb = (struct lpfc_iocbq *) arg;
2182 rspiocb = cmdiocb->context_un.rsp_iocb;
2183
2184 irsp = &rspiocb->iocb;
2185 if (irsp->ulpStatus && (ndlp->nlp_flag & NLP_NODEV_REMOVE)) {
2186 lpfc_drop_node(vport, ndlp);
2187 return NLP_STE_FREED_NODE;
2188 }
2189 return ndlp->nlp_state;
2190 }
2191
2192 static uint32_t
2193 lpfc_cmpl_logo_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2194 void *arg, uint32_t evt)
2195 {
2196 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2197
2198 /* For the fabric port just clear the fc flags. */
2199 if (ndlp->nlp_DID == Fabric_DID) {
2200 spin_lock_irq(shost->host_lock);
2201 vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP);
2202 spin_unlock_irq(shost->host_lock);
2203 }
2204 lpfc_unreg_rpi(vport, ndlp);
2205 return ndlp->nlp_state;
2206 }
2207
2208 static uint32_t
2209 lpfc_cmpl_adisc_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2210 void *arg, uint32_t evt)
2211 {
2212 struct lpfc_iocbq *cmdiocb, *rspiocb;
2213 IOCB_t *irsp;
2214
2215 cmdiocb = (struct lpfc_iocbq *) arg;
2216 rspiocb = cmdiocb->context_un.rsp_iocb;
2217
2218 irsp = &rspiocb->iocb;
2219 if (irsp->ulpStatus && (ndlp->nlp_flag & NLP_NODEV_REMOVE)) {
2220 lpfc_drop_node(vport, ndlp);
2221 return NLP_STE_FREED_NODE;
2222 }
2223 return ndlp->nlp_state;
2224 }
2225
2226 static uint32_t
2227 lpfc_cmpl_reglogin_npr_node(struct lpfc_vport *vport,
2228 struct lpfc_nodelist *ndlp,
2229 void *arg, uint32_t evt)
2230 {
2231 LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg;
2232 MAILBOX_t *mb = &pmb->u.mb;
2233
2234 if (!mb->mbxStatus) {
2235 /* SLI4 ports have preallocated logical rpis. */
2236 if (vport->phba->sli_rev < LPFC_SLI_REV4)
2237 ndlp->nlp_rpi = mb->un.varWords[0];
2238 ndlp->nlp_flag |= NLP_RPI_REGISTERED;
2239 } else {
2240 if (ndlp->nlp_flag & NLP_NODEV_REMOVE) {
2241 lpfc_drop_node(vport, ndlp);
2242 return NLP_STE_FREED_NODE;
2243 }
2244 }
2245 return ndlp->nlp_state;
2246 }
2247
2248 static uint32_t
2249 lpfc_device_rm_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2250 void *arg, uint32_t evt)
2251 {
2252 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2253
2254 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
2255 spin_lock_irq(shost->host_lock);
2256 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
2257 spin_unlock_irq(shost->host_lock);
2258 return ndlp->nlp_state;
2259 }
2260 lpfc_drop_node(vport, ndlp);
2261 return NLP_STE_FREED_NODE;
2262 }
2263
2264 static uint32_t
2265 lpfc_device_recov_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2266 void *arg, uint32_t evt)
2267 {
2268 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2269
2270 /* Don't do anything that will mess up processing of the
2271 * previous RSCN.
2272 */
2273 if (vport->fc_flag & FC_RSCN_DEFERRED)
2274 return ndlp->nlp_state;
2275
2276 lpfc_cancel_retry_delay_tmo(vport, ndlp);
2277 spin_lock_irq(shost->host_lock);
2278 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
2279 spin_unlock_irq(shost->host_lock);
2280 return ndlp->nlp_state;
2281 }
2282
2283
2284 /* This next section defines the NPort Discovery State Machine */
2285
2286 /* There are 4 different double linked lists nodelist entries can reside on.
2287 * The plogi list and adisc list are used when Link Up discovery or RSCN
2288 * processing is needed. Each list holds the nodes that we will send PLOGI
2289 * or ADISC on. These lists will keep track of what nodes will be effected
2290 * by an RSCN, or a Link Up (Typically, all nodes are effected on Link Up).
2291 * The unmapped_list will contain all nodes that we have successfully logged
2292 * into at the Fibre Channel level. The mapped_list will contain all nodes
2293 * that are mapped FCP targets.
2294 */
2295 /*
2296 * The bind list is a list of undiscovered (potentially non-existent) nodes
2297 * that we have saved binding information on. This information is used when
2298 * nodes transition from the unmapped to the mapped list.
2299 */
2300 /* For UNUSED_NODE state, the node has just been allocated .
2301 * For PLOGI_ISSUE and REG_LOGIN_ISSUE, the node is on
2302 * the PLOGI list. For REG_LOGIN_COMPL, the node is taken off the PLOGI list
2303 * and put on the unmapped list. For ADISC processing, the node is taken off
2304 * the ADISC list and placed on either the mapped or unmapped list (depending
2305 * on its previous state). Once on the unmapped list, a PRLI is issued and the
2306 * state changed to PRLI_ISSUE. When the PRLI completion occurs, the state is
2307 * changed to UNMAPPED_NODE. If the completion indicates a mapped
2308 * node, the node is taken off the unmapped list. The binding list is checked
2309 * for a valid binding, or a binding is automatically assigned. If binding
2310 * assignment is unsuccessful, the node is left on the unmapped list. If
2311 * binding assignment is successful, the associated binding list entry (if
2312 * any) is removed, and the node is placed on the mapped list.
2313 */
2314 /*
2315 * For a Link Down, all nodes on the ADISC, PLOGI, unmapped or mapped
2316 * lists will receive a DEVICE_RECOVERY event. If the linkdown or devloss timers
2317 * expire, all effected nodes will receive a DEVICE_RM event.
2318 */
2319 /*
2320 * For a Link Up or RSCN, all nodes will move from the mapped / unmapped lists
2321 * to either the ADISC or PLOGI list. After a Nameserver query or ALPA loopmap
2322 * check, additional nodes may be added or removed (via DEVICE_RM) to / from
2323 * the PLOGI or ADISC lists. Once the PLOGI and ADISC lists are populated,
2324 * we will first process the ADISC list. 32 entries are processed initially and
2325 * ADISC is initited for each one. Completions / Events for each node are
2326 * funnelled thru the state machine. As each node finishes ADISC processing, it
2327 * starts ADISC for any nodes waiting for ADISC processing. If no nodes are
2328 * waiting, and the ADISC list count is identically 0, then we are done. For
2329 * Link Up discovery, since all nodes on the PLOGI list are UNREG_LOGIN'ed, we
2330 * can issue a CLEAR_LA and reenable Link Events. Next we will process the PLOGI
2331 * list. 32 entries are processed initially and PLOGI is initited for each one.
2332 * Completions / Events for each node are funnelled thru the state machine. As
2333 * each node finishes PLOGI processing, it starts PLOGI for any nodes waiting
2334 * for PLOGI processing. If no nodes are waiting, and the PLOGI list count is
2335 * indentically 0, then we are done. We have now completed discovery / RSCN
2336 * handling. Upon completion, ALL nodes should be on either the mapped or
2337 * unmapped lists.
2338 */
2339
2340 static uint32_t (*lpfc_disc_action[NLP_STE_MAX_STATE * NLP_EVT_MAX_EVENT])
2341 (struct lpfc_vport *, struct lpfc_nodelist *, void *, uint32_t) = {
2342 /* Action routine Event Current State */
2343 lpfc_rcv_plogi_unused_node, /* RCV_PLOGI UNUSED_NODE */
2344 lpfc_rcv_els_unused_node, /* RCV_PRLI */
2345 lpfc_rcv_logo_unused_node, /* RCV_LOGO */
2346 lpfc_rcv_els_unused_node, /* RCV_ADISC */
2347 lpfc_rcv_els_unused_node, /* RCV_PDISC */
2348 lpfc_rcv_els_unused_node, /* RCV_PRLO */
2349 lpfc_disc_illegal, /* CMPL_PLOGI */
2350 lpfc_disc_illegal, /* CMPL_PRLI */
2351 lpfc_cmpl_logo_unused_node, /* CMPL_LOGO */
2352 lpfc_disc_illegal, /* CMPL_ADISC */
2353 lpfc_disc_illegal, /* CMPL_REG_LOGIN */
2354 lpfc_device_rm_unused_node, /* DEVICE_RM */
2355 lpfc_device_recov_unused_node, /* DEVICE_RECOVERY */
2356
2357 lpfc_rcv_plogi_plogi_issue, /* RCV_PLOGI PLOGI_ISSUE */
2358 lpfc_rcv_prli_plogi_issue, /* RCV_PRLI */
2359 lpfc_rcv_logo_plogi_issue, /* RCV_LOGO */
2360 lpfc_rcv_els_plogi_issue, /* RCV_ADISC */
2361 lpfc_rcv_els_plogi_issue, /* RCV_PDISC */
2362 lpfc_rcv_els_plogi_issue, /* RCV_PRLO */
2363 lpfc_cmpl_plogi_plogi_issue, /* CMPL_PLOGI */
2364 lpfc_disc_illegal, /* CMPL_PRLI */
2365 lpfc_cmpl_logo_plogi_issue, /* CMPL_LOGO */
2366 lpfc_disc_illegal, /* CMPL_ADISC */
2367 lpfc_cmpl_reglogin_plogi_issue,/* CMPL_REG_LOGIN */
2368 lpfc_device_rm_plogi_issue, /* DEVICE_RM */
2369 lpfc_device_recov_plogi_issue, /* DEVICE_RECOVERY */
2370
2371 lpfc_rcv_plogi_adisc_issue, /* RCV_PLOGI ADISC_ISSUE */
2372 lpfc_rcv_prli_adisc_issue, /* RCV_PRLI */
2373 lpfc_rcv_logo_adisc_issue, /* RCV_LOGO */
2374 lpfc_rcv_padisc_adisc_issue, /* RCV_ADISC */
2375 lpfc_rcv_padisc_adisc_issue, /* RCV_PDISC */
2376 lpfc_rcv_prlo_adisc_issue, /* RCV_PRLO */
2377 lpfc_disc_illegal, /* CMPL_PLOGI */
2378 lpfc_disc_illegal, /* CMPL_PRLI */
2379 lpfc_disc_illegal, /* CMPL_LOGO */
2380 lpfc_cmpl_adisc_adisc_issue, /* CMPL_ADISC */
2381 lpfc_disc_illegal, /* CMPL_REG_LOGIN */
2382 lpfc_device_rm_adisc_issue, /* DEVICE_RM */
2383 lpfc_device_recov_adisc_issue, /* DEVICE_RECOVERY */
2384
2385 lpfc_rcv_plogi_reglogin_issue, /* RCV_PLOGI REG_LOGIN_ISSUE */
2386 lpfc_rcv_prli_reglogin_issue, /* RCV_PLOGI */
2387 lpfc_rcv_logo_reglogin_issue, /* RCV_LOGO */
2388 lpfc_rcv_padisc_reglogin_issue, /* RCV_ADISC */
2389 lpfc_rcv_padisc_reglogin_issue, /* RCV_PDISC */
2390 lpfc_rcv_prlo_reglogin_issue, /* RCV_PRLO */
2391 lpfc_cmpl_plogi_illegal, /* CMPL_PLOGI */
2392 lpfc_disc_illegal, /* CMPL_PRLI */
2393 lpfc_disc_illegal, /* CMPL_LOGO */
2394 lpfc_disc_illegal, /* CMPL_ADISC */
2395 lpfc_cmpl_reglogin_reglogin_issue,/* CMPL_REG_LOGIN */
2396 lpfc_device_rm_reglogin_issue, /* DEVICE_RM */
2397 lpfc_device_recov_reglogin_issue,/* DEVICE_RECOVERY */
2398
2399 lpfc_rcv_plogi_prli_issue, /* RCV_PLOGI PRLI_ISSUE */
2400 lpfc_rcv_prli_prli_issue, /* RCV_PRLI */
2401 lpfc_rcv_logo_prli_issue, /* RCV_LOGO */
2402 lpfc_rcv_padisc_prli_issue, /* RCV_ADISC */
2403 lpfc_rcv_padisc_prli_issue, /* RCV_PDISC */
2404 lpfc_rcv_prlo_prli_issue, /* RCV_PRLO */
2405 lpfc_cmpl_plogi_illegal, /* CMPL_PLOGI */
2406 lpfc_cmpl_prli_prli_issue, /* CMPL_PRLI */
2407 lpfc_disc_illegal, /* CMPL_LOGO */
2408 lpfc_disc_illegal, /* CMPL_ADISC */
2409 lpfc_disc_illegal, /* CMPL_REG_LOGIN */
2410 lpfc_device_rm_prli_issue, /* DEVICE_RM */
2411 lpfc_device_recov_prli_issue, /* DEVICE_RECOVERY */
2412
2413 lpfc_rcv_plogi_logo_issue, /* RCV_PLOGI LOGO_ISSUE */
2414 lpfc_rcv_prli_logo_issue, /* RCV_PRLI */
2415 lpfc_rcv_logo_logo_issue, /* RCV_LOGO */
2416 lpfc_rcv_padisc_logo_issue, /* RCV_ADISC */
2417 lpfc_rcv_padisc_logo_issue, /* RCV_PDISC */
2418 lpfc_rcv_prlo_logo_issue, /* RCV_PRLO */
2419 lpfc_cmpl_plogi_illegal, /* CMPL_PLOGI */
2420 lpfc_disc_illegal, /* CMPL_PRLI */
2421 lpfc_cmpl_logo_logo_issue, /* CMPL_LOGO */
2422 lpfc_disc_illegal, /* CMPL_ADISC */
2423 lpfc_disc_illegal, /* CMPL_REG_LOGIN */
2424 lpfc_device_rm_logo_issue, /* DEVICE_RM */
2425 lpfc_device_recov_logo_issue, /* DEVICE_RECOVERY */
2426
2427 lpfc_rcv_plogi_unmap_node, /* RCV_PLOGI UNMAPPED_NODE */
2428 lpfc_rcv_prli_unmap_node, /* RCV_PRLI */
2429 lpfc_rcv_logo_unmap_node, /* RCV_LOGO */
2430 lpfc_rcv_padisc_unmap_node, /* RCV_ADISC */
2431 lpfc_rcv_padisc_unmap_node, /* RCV_PDISC */
2432 lpfc_rcv_prlo_unmap_node, /* RCV_PRLO */
2433 lpfc_disc_illegal, /* CMPL_PLOGI */
2434 lpfc_disc_illegal, /* CMPL_PRLI */
2435 lpfc_disc_illegal, /* CMPL_LOGO */
2436 lpfc_disc_illegal, /* CMPL_ADISC */
2437 lpfc_disc_illegal, /* CMPL_REG_LOGIN */
2438 lpfc_disc_illegal, /* DEVICE_RM */
2439 lpfc_device_recov_unmap_node, /* DEVICE_RECOVERY */
2440
2441 lpfc_rcv_plogi_mapped_node, /* RCV_PLOGI MAPPED_NODE */
2442 lpfc_rcv_prli_mapped_node, /* RCV_PRLI */
2443 lpfc_rcv_logo_mapped_node, /* RCV_LOGO */
2444 lpfc_rcv_padisc_mapped_node, /* RCV_ADISC */
2445 lpfc_rcv_padisc_mapped_node, /* RCV_PDISC */
2446 lpfc_rcv_prlo_mapped_node, /* RCV_PRLO */
2447 lpfc_disc_illegal, /* CMPL_PLOGI */
2448 lpfc_disc_illegal, /* CMPL_PRLI */
2449 lpfc_disc_illegal, /* CMPL_LOGO */
2450 lpfc_disc_illegal, /* CMPL_ADISC */
2451 lpfc_disc_illegal, /* CMPL_REG_LOGIN */
2452 lpfc_disc_illegal, /* DEVICE_RM */
2453 lpfc_device_recov_mapped_node, /* DEVICE_RECOVERY */
2454
2455 lpfc_rcv_plogi_npr_node, /* RCV_PLOGI NPR_NODE */
2456 lpfc_rcv_prli_npr_node, /* RCV_PRLI */
2457 lpfc_rcv_logo_npr_node, /* RCV_LOGO */
2458 lpfc_rcv_padisc_npr_node, /* RCV_ADISC */
2459 lpfc_rcv_padisc_npr_node, /* RCV_PDISC */
2460 lpfc_rcv_prlo_npr_node, /* RCV_PRLO */
2461 lpfc_cmpl_plogi_npr_node, /* CMPL_PLOGI */
2462 lpfc_cmpl_prli_npr_node, /* CMPL_PRLI */
2463 lpfc_cmpl_logo_npr_node, /* CMPL_LOGO */
2464 lpfc_cmpl_adisc_npr_node, /* CMPL_ADISC */
2465 lpfc_cmpl_reglogin_npr_node, /* CMPL_REG_LOGIN */
2466 lpfc_device_rm_npr_node, /* DEVICE_RM */
2467 lpfc_device_recov_npr_node, /* DEVICE_RECOVERY */
2468 };
2469
2470 int
2471 lpfc_disc_state_machine(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2472 void *arg, uint32_t evt)
2473 {
2474 uint32_t cur_state, rc;
2475 uint32_t(*func) (struct lpfc_vport *, struct lpfc_nodelist *, void *,
2476 uint32_t);
2477 uint32_t got_ndlp = 0;
2478
2479 if (lpfc_nlp_get(ndlp))
2480 got_ndlp = 1;
2481
2482 cur_state = ndlp->nlp_state;
2483
2484 /* DSM in event <evt> on NPort <nlp_DID> in state <cur_state> */
2485 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
2486 "0211 DSM in event x%x on NPort x%x in "
2487 "state %d Data: x%x\n",
2488 evt, ndlp->nlp_DID, cur_state, ndlp->nlp_flag);
2489
2490 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_DSM,
2491 "DSM in: evt:%d ste:%d did:x%x",
2492 evt, cur_state, ndlp->nlp_DID);
2493
2494 func = lpfc_disc_action[(cur_state * NLP_EVT_MAX_EVENT) + evt];
2495 rc = (func) (vport, ndlp, arg, evt);
2496
2497 /* DSM out state <rc> on NPort <nlp_DID> */
2498 if (got_ndlp) {
2499 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
2500 "0212 DSM out state %d on NPort x%x Data: x%x\n",
2501 rc, ndlp->nlp_DID, ndlp->nlp_flag);
2502
2503 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_DSM,
2504 "DSM out: ste:%d did:x%x flg:x%x",
2505 rc, ndlp->nlp_DID, ndlp->nlp_flag);
2506 /* Decrement the ndlp reference count held for this function */
2507 lpfc_nlp_put(ndlp);
2508 } else {
2509 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
2510 "0213 DSM out state %d on NPort free\n", rc);
2511
2512 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_DSM,
2513 "DSM out: ste:%d did:x%x flg:x%x",
2514 rc, 0, 0);
2515 }
2516
2517 return rc;
2518 }
Linux kernel - Deliverables
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