tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1 /*******************************************************************
2 * This file is part of the Emulex Linux Device Driver for *
3 * Fibre Channel Host Bus Adapters. *
4 * Copyright (C) 2004-2009 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. */
47static int
48lpfc_check_adisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
49 struct lpfc_name *nn, struct lpfc_name *pn)
50{
51 /* Compare the ADISC rsp WWNN / WWPN matches our internal node
52 * table entry for that node.
53 */
54 if (memcmp(nn, &ndlp->nlp_nodename, sizeof (struct lpfc_name)))
55 return 0;
56
57 if (memcmp(pn, &ndlp->nlp_portname, sizeof (struct lpfc_name)))
58 return 0;
59
60 /* we match, return success */
61 return 1;
62}
63
64int
65lpfc_check_sparm(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
66 struct serv_parm *sp, uint32_t class, int flogi)
67{
68 volatile struct serv_parm *hsp = &vport->fc_sparam;
69 uint16_t hsp_value, ssp_value = 0;
70
71 /*
72 * The receive data field size and buffer-to-buffer receive data field
73 * size entries are 16 bits but are represented as two 8-bit fields in
74 * the driver data structure to account for rsvd bits and other control
75 * bits. Reconstruct and compare the fields as a 16-bit values before
76 * correcting the byte values.
77 */
78 if (sp->cls1.classValid) {
79 if (!flogi) {
80 hsp_value = ((hsp->cls1.rcvDataSizeMsb << 8) |
81 hsp->cls1.rcvDataSizeLsb);
82 ssp_value = ((sp->cls1.rcvDataSizeMsb << 8) |
83 sp->cls1.rcvDataSizeLsb);
84 if (!ssp_value)
85 goto bad_service_param;
86 if (ssp_value > hsp_value) {
87 sp->cls1.rcvDataSizeLsb =
88 hsp->cls1.rcvDataSizeLsb;
89 sp->cls1.rcvDataSizeMsb =
90 hsp->cls1.rcvDataSizeMsb;
91 }
92 }
93 } else if (class == CLASS1)
94 goto bad_service_param;
95 if (sp->cls2.classValid) {
96 if (!flogi) {
97 hsp_value = ((hsp->cls2.rcvDataSizeMsb << 8) |
98 hsp->cls2.rcvDataSizeLsb);
99 ssp_value = ((sp->cls2.rcvDataSizeMsb << 8) |
100 sp->cls2.rcvDataSizeLsb);
101 if (!ssp_value)
102 goto bad_service_param;
103 if (ssp_value > hsp_value) {
104 sp->cls2.rcvDataSizeLsb =
105 hsp->cls2.rcvDataSizeLsb;
106 sp->cls2.rcvDataSizeMsb =
107 hsp->cls2.rcvDataSizeMsb;
108 }
109 }
110 } else if (class == CLASS2)
111 goto bad_service_param;
112 if (sp->cls3.classValid) {
113 if (!flogi) {
114 hsp_value = ((hsp->cls3.rcvDataSizeMsb << 8) |
115 hsp->cls3.rcvDataSizeLsb);
116 ssp_value = ((sp->cls3.rcvDataSizeMsb << 8) |
117 sp->cls3.rcvDataSizeLsb);
118 if (!ssp_value)
119 goto bad_service_param;
120 if (ssp_value > hsp_value) {
121 sp->cls3.rcvDataSizeLsb =
122 hsp->cls3.rcvDataSizeLsb;
123 sp->cls3.rcvDataSizeMsb =
124 hsp->cls3.rcvDataSizeMsb;
125 }
126 }
127 } else if (class == CLASS3)
128 goto bad_service_param;
129
130 /*
131 * Preserve the upper four bits of the MSB from the PLOGI response.
132 * These bits contain the Buffer-to-Buffer State Change Number
133 * from the target and need to be passed to the FW.
134 */
135 hsp_value = (hsp->cmn.bbRcvSizeMsb << 8) | hsp->cmn.bbRcvSizeLsb;
136 ssp_value = (sp->cmn.bbRcvSizeMsb << 8) | sp->cmn.bbRcvSizeLsb;
137 if (ssp_value > hsp_value) {
138 sp->cmn.bbRcvSizeLsb = hsp->cmn.bbRcvSizeLsb;
139 sp->cmn.bbRcvSizeMsb = (sp->cmn.bbRcvSizeMsb & 0xF0) |
140 (hsp->cmn.bbRcvSizeMsb & 0x0F);
141 }
142
143 memcpy(&ndlp->nlp_nodename, &sp->nodeName, sizeof (struct lpfc_name));
144 memcpy(&ndlp->nlp_portname, &sp->portName, sizeof (struct lpfc_name));
145 return 1;
146bad_service_param:
147 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
148 "0207 Device %x "
149 "(%02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x) sent "
150 "invalid service parameters. Ignoring device.\n",
151 ndlp->nlp_DID,
152 sp->nodeName.u.wwn[0], sp->nodeName.u.wwn[1],
153 sp->nodeName.u.wwn[2], sp->nodeName.u.wwn[3],
154 sp->nodeName.u.wwn[4], sp->nodeName.u.wwn[5],
155 sp->nodeName.u.wwn[6], sp->nodeName.u.wwn[7]);
156 return 0;
157}
158
159static void *
160lpfc_check_elscmpl_iocb(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
161 struct lpfc_iocbq *rspiocb)
162{
163 struct lpfc_dmabuf *pcmd, *prsp;
164 uint32_t *lp;
165 void *ptr = NULL;
166 IOCB_t *irsp;
167
168 irsp = &rspiocb->iocb;
169 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
170
171 /* For lpfc_els_abort, context2 could be zero'ed to delay
172 * freeing associated memory till after ABTS completes.
173 */
174 if (pcmd) {
175 prsp = list_get_first(&pcmd->list, struct lpfc_dmabuf,
176 list);
177 if (prsp) {
178 lp = (uint32_t *) prsp->virt;
179 ptr = (void *)((uint8_t *)lp + sizeof(uint32_t));
180 }
181 } else {
182 /* Force ulpStatus error since we are returning NULL ptr */
183 if (!(irsp->ulpStatus)) {
184 irsp->ulpStatus = IOSTAT_LOCAL_REJECT;
185 irsp->un.ulpWord[4] = IOERR_SLI_ABORTED;
186 }
187 ptr = NULL;
188 }
189 return ptr;
190}
191
192
193/*
194 * Free resources / clean up outstanding I/Os
195 * associated with a LPFC_NODELIST entry. This
196 * routine effectively results in a "software abort".
197 */
198int
199lpfc_els_abort(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
200{
201 LIST_HEAD(completions);
202 struct lpfc_sli *psli = &phba->sli;
203 struct lpfc_sli_ring *pring = &psli->ring[LPFC_ELS_RING];
204 struct lpfc_iocbq *iocb, *next_iocb;
205
206 /* Abort outstanding I/O on NPort <nlp_DID> */
207 lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_DISCOVERY,
208 "0205 Abort outstanding I/O on NPort x%x "
209 "Data: x%x x%x x%x\n",
210 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
211 ndlp->nlp_rpi);
212
213 lpfc_fabric_abort_nport(ndlp);
214
215 /* First check the txq */
216 spin_lock_irq(&phba->hbalock);
217 list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) {
218 /* Check to see if iocb matches the nport we are looking for */
219 if (lpfc_check_sli_ndlp(phba, pring, iocb, ndlp)) {
220 /* It matches, so deque and call compl with anp error */
221 list_move_tail(&iocb->list, &completions);
222 pring->txq_cnt--;
223 }
224 }
225
226 /* Next check the txcmplq */
227 list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq, list) {
228 /* Check to see if iocb matches the nport we are looking for */
229 if (lpfc_check_sli_ndlp(phba, pring, iocb, ndlp)) {
230 lpfc_sli_issue_abort_iotag(phba, pring, iocb);
231 }
232 }
233 spin_unlock_irq(&phba->hbalock);
234
235 /* Cancel all the IOCBs from the completions list */
236 lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT,
237 IOERR_SLI_ABORTED);
238
239 lpfc_cancel_retry_delay_tmo(phba->pport, ndlp);
240 return 0;
241}
242
243static int
244lpfc_rcv_plogi(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
245 struct lpfc_iocbq *cmdiocb)
246{
247 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
248 struct lpfc_hba *phba = vport->phba;
249 struct lpfc_dmabuf *pcmd;
250 uint32_t *lp;
251 IOCB_t *icmd;
252 struct serv_parm *sp;
253 LPFC_MBOXQ_t *mbox;
254 struct ls_rjt stat;
255 int rc;
256
257 memset(&stat, 0, sizeof (struct ls_rjt));
258 if (vport->port_state <= LPFC_FDISC) {
259 /* Before responding to PLOGI, check for pt2pt mode.
260 * If we are pt2pt, with an outstanding FLOGI, abort
261 * the FLOGI and resend it first.
262 */
263 if (vport->fc_flag & FC_PT2PT) {
264 lpfc_els_abort_flogi(phba);
265 if (!(vport->fc_flag & FC_PT2PT_PLOGI)) {
266 /* If the other side is supposed to initiate
267 * the PLOGI anyway, just ACC it now and
268 * move on with discovery.
269 */
270 phba->fc_edtov = FF_DEF_EDTOV;
271 phba->fc_ratov = FF_DEF_RATOV;
272 /* Start discovery - this should just do
273 CLEAR_LA */
274 lpfc_disc_start(vport);
275 } else
276 lpfc_initial_flogi(vport);
277 } else {
278 stat.un.b.lsRjtRsnCode = LSRJT_LOGICAL_BSY;
279 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
280 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb,
281 ndlp, NULL);
282 return 0;
283 }
284 }
285 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
286 lp = (uint32_t *) pcmd->virt;
287 sp = (struct serv_parm *) ((uint8_t *) lp + sizeof (uint32_t));
288 if (wwn_to_u64(sp->portName.u.wwn) == 0) {
289 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
290 "0140 PLOGI Reject: invalid nname\n");
291 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
292 stat.un.b.lsRjtRsnCodeExp = LSEXP_INVALID_PNAME;
293 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
294 NULL);
295 return 0;
296 }
297 if (wwn_to_u64(sp->nodeName.u.wwn) == 0) {
298 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
299 "0141 PLOGI Reject: invalid pname\n");
300 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
301 stat.un.b.lsRjtRsnCodeExp = LSEXP_INVALID_NNAME;
302 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
303 NULL);
304 return 0;
305 }
306 if ((lpfc_check_sparm(vport, ndlp, sp, CLASS3, 0) == 0)) {
307 /* Reject this request because invalid parameters */
308 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
309 stat.un.b.lsRjtRsnCodeExp = LSEXP_SPARM_OPTIONS;
310 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
311 NULL);
312 return 0;
313 }
314 icmd = &cmdiocb->iocb;
315
316 /* PLOGI chkparm OK */
317 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
318 "0114 PLOGI chkparm OK Data: x%x x%x x%x x%x\n",
319 ndlp->nlp_DID, ndlp->nlp_state, ndlp->nlp_flag,
320 ndlp->nlp_rpi);
321
322 if (vport->cfg_fcp_class == 2 && sp->cls2.classValid)
323 ndlp->nlp_fcp_info |= CLASS2;
324 else
325 ndlp->nlp_fcp_info |= CLASS3;
326
327 ndlp->nlp_class_sup = 0;
328 if (sp->cls1.classValid)
329 ndlp->nlp_class_sup |= FC_COS_CLASS1;
330 if (sp->cls2.classValid)
331 ndlp->nlp_class_sup |= FC_COS_CLASS2;
332 if (sp->cls3.classValid)
333 ndlp->nlp_class_sup |= FC_COS_CLASS3;
334 if (sp->cls4.classValid)
335 ndlp->nlp_class_sup |= FC_COS_CLASS4;
336 ndlp->nlp_maxframe =
337 ((sp->cmn.bbRcvSizeMsb & 0x0F) << 8) | sp->cmn.bbRcvSizeLsb;
338
339 /* no need to reg_login if we are already in one of these states */
340 switch (ndlp->nlp_state) {
341 case NLP_STE_NPR_NODE:
342 if (!(ndlp->nlp_flag & NLP_NPR_ADISC))
343 break;
344 case NLP_STE_REG_LOGIN_ISSUE:
345 case NLP_STE_PRLI_ISSUE:
346 case NLP_STE_UNMAPPED_NODE:
347 case NLP_STE_MAPPED_NODE:
348 lpfc_els_rsp_acc(vport, ELS_CMD_PLOGI, cmdiocb, ndlp, NULL);
349 return 1;
350 }
351
352 if ((vport->fc_flag & FC_PT2PT) &&
353 !(vport->fc_flag & FC_PT2PT_PLOGI)) {
354 /* rcv'ed PLOGI decides what our NPortId will be */
355 vport->fc_myDID = icmd->un.rcvels.parmRo;
356 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
357 if (mbox == NULL)
358 goto out;
359 lpfc_config_link(phba, mbox);
360 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
361 mbox->vport = vport;
362 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
363 if (rc == MBX_NOT_FINISHED) {
364 mempool_free(mbox, phba->mbox_mem_pool);
365 goto out;
366 }
367
368 lpfc_can_disctmo(vport);
369 }
370 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
371 if (!mbox)
372 goto out;
373
374 rc = lpfc_reg_rpi(phba, vport->vpi, icmd->un.rcvels.remoteID,
375 (uint8_t *) sp, mbox, 0);
376 if (rc) {
377 mempool_free(mbox, phba->mbox_mem_pool);
378 goto out;
379 }
380
381 /* ACC PLOGI rsp command needs to execute first,
382 * queue this mbox command to be processed later.
383 */
384 mbox->mbox_cmpl = lpfc_mbx_cmpl_reg_login;
385 /*
386 * mbox->context2 = lpfc_nlp_get(ndlp) deferred until mailbox
387 * command issued in lpfc_cmpl_els_acc().
388 */
389 mbox->vport = vport;
390 spin_lock_irq(shost->host_lock);
391 ndlp->nlp_flag |= (NLP_ACC_REGLOGIN | NLP_RCV_PLOGI);
392 spin_unlock_irq(shost->host_lock);
393
394 /*
395 * If there is an outstanding PLOGI issued, abort it before
396 * sending ACC rsp for received PLOGI. If pending plogi
397 * is not canceled here, the plogi will be rejected by
398 * remote port and will be retried. On a configuration with
399 * single discovery thread, this will cause a huge delay in
400 * discovery. Also this will cause multiple state machines
401 * running in parallel for this node.
402 */
403 if (ndlp->nlp_state == NLP_STE_PLOGI_ISSUE) {
404 /* software abort outstanding PLOGI */
405 lpfc_els_abort(phba, ndlp);
406 }
407
408 if ((vport->port_type == LPFC_NPIV_PORT &&
409 vport->cfg_restrict_login)) {
410
411 /* In order to preserve RPIs, we want to cleanup
412 * the default RPI the firmware created to rcv
413 * this ELS request. The only way to do this is
414 * to register, then unregister the RPI.
415 */
416 spin_lock_irq(shost->host_lock);
417 ndlp->nlp_flag |= NLP_RM_DFLT_RPI;
418 spin_unlock_irq(shost->host_lock);
419 stat.un.b.lsRjtRsnCode = LSRJT_INVALID_CMD;
420 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
421 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb,
422 ndlp, mbox);
423 return 1;
424 }
425 lpfc_els_rsp_acc(vport, ELS_CMD_PLOGI, cmdiocb, ndlp, mbox);
426 return 1;
427out:
428 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
429 stat.un.b.lsRjtRsnCodeExp = LSEXP_OUT_OF_RESOURCE;
430 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
431 return 0;
432}
433
434static int
435lpfc_rcv_padisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
436 struct lpfc_iocbq *cmdiocb)
437{
438 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
439 struct lpfc_dmabuf *pcmd;
440 struct serv_parm *sp;
441 struct lpfc_name *pnn, *ppn;
442 struct ls_rjt stat;
443 ADISC *ap;
444 IOCB_t *icmd;
445 uint32_t *lp;
446 uint32_t cmd;
447
448 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
449 lp = (uint32_t *) pcmd->virt;
450
451 cmd = *lp++;
452 if (cmd == ELS_CMD_ADISC) {
453 ap = (ADISC *) lp;
454 pnn = (struct lpfc_name *) & ap->nodeName;
455 ppn = (struct lpfc_name *) & ap->portName;
456 } else {
457 sp = (struct serv_parm *) lp;
458 pnn = (struct lpfc_name *) & sp->nodeName;
459 ppn = (struct lpfc_name *) & sp->portName;
460 }
461
462 icmd = &cmdiocb->iocb;
463 if (icmd->ulpStatus == 0 && lpfc_check_adisc(vport, ndlp, pnn, ppn)) {
464 if (cmd == ELS_CMD_ADISC) {
465 lpfc_els_rsp_adisc_acc(vport, cmdiocb, ndlp);
466 } else {
467 lpfc_els_rsp_acc(vport, ELS_CMD_PLOGI, cmdiocb, ndlp,
468 NULL);
469 }
470 return 1;
471 }
472 /* Reject this request because invalid parameters */
473 stat.un.b.lsRjtRsvd0 = 0;
474 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
475 stat.un.b.lsRjtRsnCodeExp = LSEXP_SPARM_OPTIONS;
476 stat.un.b.vendorUnique = 0;
477 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
478
479 /* 1 sec timeout */
480 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ);
481
482 spin_lock_irq(shost->host_lock);
483 ndlp->nlp_flag |= NLP_DELAY_TMO;
484 spin_unlock_irq(shost->host_lock);
485 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
486 ndlp->nlp_prev_state = ndlp->nlp_state;
487 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
488 return 0;
489}
490
491static int
492lpfc_rcv_logo(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
493 struct lpfc_iocbq *cmdiocb, uint32_t els_cmd)
494{
495 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
496 struct lpfc_hba *phba = vport->phba;
497 struct lpfc_vport **vports;
498 int i, active_vlink_present = 0 ;
499
500 /* Put ndlp in NPR state with 1 sec timeout for plogi, ACC logo */
501 /* Only call LOGO ACC for first LOGO, this avoids sending unnecessary
502 * PLOGIs during LOGO storms from a device.
503 */
504 spin_lock_irq(shost->host_lock);
505 ndlp->nlp_flag |= NLP_LOGO_ACC;
506 spin_unlock_irq(shost->host_lock);
507 if (els_cmd == ELS_CMD_PRLO)
508 lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
509 else
510 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
511 if (ndlp->nlp_DID == Fabric_DID) {
512 if (vport->port_state <= LPFC_FDISC)
513 goto out;
514 lpfc_linkdown_port(vport);
515 spin_lock_irq(shost->host_lock);
516 vport->fc_flag |= FC_VPORT_LOGO_RCVD;
517 spin_unlock_irq(shost->host_lock);
518 vports = lpfc_create_vport_work_array(phba);
519 if (vports) {
520 for (i = 0; i <= phba->max_vports && vports[i] != NULL;
521 i++) {
522 if ((!(vports[i]->fc_flag &
523 FC_VPORT_LOGO_RCVD)) &&
524 (vports[i]->port_state > LPFC_FDISC)) {
525 active_vlink_present = 1;
526 break;
527 }
528 }
529 lpfc_destroy_vport_work_array(phba, vports);
530 }
531
532 if (active_vlink_present) {
533 /*
534 * If there are other active VLinks present,
535 * re-instantiate the Vlink using FDISC.
536 */
537 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ);
538 spin_lock_irq(shost->host_lock);
539 ndlp->nlp_flag |= NLP_DELAY_TMO;
540 spin_unlock_irq(shost->host_lock);
541 ndlp->nlp_last_elscmd = ELS_CMD_FDISC;
542 vport->port_state = LPFC_FDISC;
543 } else {
544 spin_lock_irq(shost->host_lock);
545 phba->pport->fc_flag &= ~FC_LOGO_RCVD_DID_CHNG;
546 spin_unlock_irq(shost->host_lock);
547 lpfc_retry_pport_discovery(phba);
548 }
549 } else if ((!(ndlp->nlp_type & NLP_FABRIC) &&
550 ((ndlp->nlp_type & NLP_FCP_TARGET) ||
551 !(ndlp->nlp_type & NLP_FCP_INITIATOR))) ||
552 (ndlp->nlp_state == NLP_STE_ADISC_ISSUE)) {
553 /* Only try to re-login if this is NOT a Fabric Node */
554 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ * 1);
555 spin_lock_irq(shost->host_lock);
556 ndlp->nlp_flag |= NLP_DELAY_TMO;
557 spin_unlock_irq(shost->host_lock);
558
559 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
560 }
561out:
562 ndlp->nlp_prev_state = ndlp->nlp_state;
563 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
564
565 spin_lock_irq(shost->host_lock);
566 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
567 spin_unlock_irq(shost->host_lock);
568 /* The driver has to wait until the ACC completes before it continues
569 * processing the LOGO. The action will resume in
570 * lpfc_cmpl_els_logo_acc routine. Since part of processing includes an
571 * unreg_login, the driver waits so the ACC does not get aborted.
572 */
573 return 0;
574}
575
576static void
577lpfc_rcv_prli(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
578 struct lpfc_iocbq *cmdiocb)
579{
580 struct lpfc_dmabuf *pcmd;
581 uint32_t *lp;
582 PRLI *npr;
583 struct fc_rport *rport = ndlp->rport;
584 u32 roles;
585
586 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
587 lp = (uint32_t *) pcmd->virt;
588 npr = (PRLI *) ((uint8_t *) lp + sizeof (uint32_t));
589
590 ndlp->nlp_type &= ~(NLP_FCP_TARGET | NLP_FCP_INITIATOR);
591 ndlp->nlp_fcp_info &= ~NLP_FCP_2_DEVICE;
592 if (npr->prliType == PRLI_FCP_TYPE) {
593 if (npr->initiatorFunc)
594 ndlp->nlp_type |= NLP_FCP_INITIATOR;
595 if (npr->targetFunc)
596 ndlp->nlp_type |= NLP_FCP_TARGET;
597 if (npr->Retry)
598 ndlp->nlp_fcp_info |= NLP_FCP_2_DEVICE;
599 }
600 if (rport) {
601 /* We need to update the rport role values */
602 roles = FC_RPORT_ROLE_UNKNOWN;
603 if (ndlp->nlp_type & NLP_FCP_INITIATOR)
604 roles |= FC_RPORT_ROLE_FCP_INITIATOR;
605 if (ndlp->nlp_type & NLP_FCP_TARGET)
606 roles |= FC_RPORT_ROLE_FCP_TARGET;
607
608 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
609 "rport rolechg: role:x%x did:x%x flg:x%x",
610 roles, ndlp->nlp_DID, ndlp->nlp_flag);
611
612 fc_remote_port_rolechg(rport, roles);
613 }
614}
615
616static uint32_t
617lpfc_disc_set_adisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
618{
619 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
620
621 if (!(ndlp->nlp_flag & NLP_RPI_VALID)) {
622 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
623 return 0;
624 }
625
626 if (!(vport->fc_flag & FC_PT2PT)) {
627 /* Check config parameter use-adisc or FCP-2 */
628 if ((vport->cfg_use_adisc && (vport->fc_flag & FC_RSCN_MODE)) ||
629 ndlp->nlp_fcp_info & NLP_FCP_2_DEVICE) {
630 spin_lock_irq(shost->host_lock);
631 ndlp->nlp_flag |= NLP_NPR_ADISC;
632 spin_unlock_irq(shost->host_lock);
633 return 1;
634 }
635 }
636 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
637 lpfc_unreg_rpi(vport, ndlp);
638 return 0;
639}
640/**
641 * lpfc_release_rpi - Release a RPI by issueing unreg_login mailbox cmd.
642 * @phba : Pointer to lpfc_hba structure.
643 * @vport: Pointer to lpfc_vport structure.
644 * @rpi : rpi to be release.
645 *
646 * This function will send a unreg_login mailbox command to the firmware
647 * to release a rpi.
648 **/
649void
650lpfc_release_rpi(struct lpfc_hba *phba,
651 struct lpfc_vport *vport,
652 uint16_t rpi)
653{
654 LPFC_MBOXQ_t *pmb;
655 int rc;
656
657 pmb = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool,
658 GFP_KERNEL);
659 if (!pmb)
660 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
661 "2796 mailbox memory allocation failed \n");
662 else {
663 lpfc_unreg_login(phba, vport->vpi, rpi, pmb);
664 pmb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
665 rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);
666 if (rc == MBX_NOT_FINISHED)
667 mempool_free(pmb, phba->mbox_mem_pool);
668 }
669}
670
671static uint32_t
672lpfc_disc_illegal(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
673 void *arg, uint32_t evt)
674{
675 struct lpfc_hba *phba;
676 LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg;
677 MAILBOX_t *mb;
678 uint16_t rpi;
679
680 phba = vport->phba;
681 /* Release the RPI if reglogin completing */
682 if (!(phba->pport->load_flag & FC_UNLOADING) &&
683 (evt == NLP_EVT_CMPL_REG_LOGIN) &&
684 (!pmb->u.mb.mbxStatus)) {
685 mb = &pmb->u.mb;
686 rpi = pmb->u.mb.un.varWords[0];
687 lpfc_release_rpi(phba, vport, rpi);
688 }
689 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
690 "0271 Illegal State Transition: node x%x "
691 "event x%x, state x%x Data: x%x x%x\n",
692 ndlp->nlp_DID, evt, ndlp->nlp_state, ndlp->nlp_rpi,
693 ndlp->nlp_flag);
694 return ndlp->nlp_state;
695}
696
697static uint32_t
698lpfc_cmpl_plogi_illegal(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
699 void *arg, uint32_t evt)
700{
701 /* This transition is only legal if we previously
702 * rcv'ed a PLOGI. Since we don't want 2 discovery threads
703 * working on the same NPortID, do nothing for this thread
704 * to stop it.
705 */
706 if (!(ndlp->nlp_flag & NLP_RCV_PLOGI)) {
707 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
708 "0272 Illegal State Transition: node x%x "
709 "event x%x, state x%x Data: x%x x%x\n",
710 ndlp->nlp_DID, evt, ndlp->nlp_state, ndlp->nlp_rpi,
711 ndlp->nlp_flag);
712 }
713 return ndlp->nlp_state;
714}
715
716/* Start of Discovery State Machine routines */
717
718static uint32_t
719lpfc_rcv_plogi_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
720 void *arg, uint32_t evt)
721{
722 struct lpfc_iocbq *cmdiocb;
723
724 cmdiocb = (struct lpfc_iocbq *) arg;
725
726 if (lpfc_rcv_plogi(vport, ndlp, cmdiocb)) {
727 return ndlp->nlp_state;
728 }
729 return NLP_STE_FREED_NODE;
730}
731
732static uint32_t
733lpfc_rcv_els_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
734 void *arg, uint32_t evt)
735{
736 lpfc_issue_els_logo(vport, ndlp, 0);
737 return ndlp->nlp_state;
738}
739
740static uint32_t
741lpfc_rcv_logo_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
742 void *arg, uint32_t evt)
743{
744 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
745 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
746
747 spin_lock_irq(shost->host_lock);
748 ndlp->nlp_flag |= NLP_LOGO_ACC;
749 spin_unlock_irq(shost->host_lock);
750 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
751
752 return ndlp->nlp_state;
753}
754
755static uint32_t
756lpfc_cmpl_logo_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
757 void *arg, uint32_t evt)
758{
759 return NLP_STE_FREED_NODE;
760}
761
762static uint32_t
763lpfc_device_rm_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
764 void *arg, uint32_t evt)
765{
766 return NLP_STE_FREED_NODE;
767}
768
769static uint32_t
770lpfc_rcv_plogi_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
771 void *arg, uint32_t evt)
772{
773 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
774 struct lpfc_hba *phba = vport->phba;
775 struct lpfc_iocbq *cmdiocb = arg;
776 struct lpfc_dmabuf *pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
777 uint32_t *lp = (uint32_t *) pcmd->virt;
778 struct serv_parm *sp = (struct serv_parm *) (lp + 1);
779 struct ls_rjt stat;
780 int port_cmp;
781
782 memset(&stat, 0, sizeof (struct ls_rjt));
783
784 /* For a PLOGI, we only accept if our portname is less
785 * than the remote portname.
786 */
787 phba->fc_stat.elsLogiCol++;
788 port_cmp = memcmp(&vport->fc_portname, &sp->portName,
789 sizeof(struct lpfc_name));
790
791 if (port_cmp >= 0) {
792 /* Reject this request because the remote node will accept
793 ours */
794 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
795 stat.un.b.lsRjtRsnCodeExp = LSEXP_CMD_IN_PROGRESS;
796 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
797 NULL);
798 } else {
799 if (lpfc_rcv_plogi(vport, ndlp, cmdiocb) &&
800 (ndlp->nlp_flag & NLP_NPR_2B_DISC) &&
801 (vport->num_disc_nodes)) {
802 spin_lock_irq(shost->host_lock);
803 ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
804 spin_unlock_irq(shost->host_lock);
805 /* Check if there are more PLOGIs to be sent */
806 lpfc_more_plogi(vport);
807 if (vport->num_disc_nodes == 0) {
808 spin_lock_irq(shost->host_lock);
809 vport->fc_flag &= ~FC_NDISC_ACTIVE;
810 spin_unlock_irq(shost->host_lock);
811 lpfc_can_disctmo(vport);
812 lpfc_end_rscn(vport);
813 }
814 }
815 } /* If our portname was less */
816
817 return ndlp->nlp_state;
818}
819
820static uint32_t
821lpfc_rcv_prli_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
822 void *arg, uint32_t evt)
823{
824 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
825 struct ls_rjt stat;
826
827 memset(&stat, 0, sizeof (struct ls_rjt));
828 stat.un.b.lsRjtRsnCode = LSRJT_LOGICAL_BSY;
829 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
830 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
831 return ndlp->nlp_state;
832}
833
834static uint32_t
835lpfc_rcv_logo_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
836 void *arg, uint32_t evt)
837{
838 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
839
840 /* software abort outstanding PLOGI */
841 lpfc_els_abort(vport->phba, ndlp);
842
843 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
844 return ndlp->nlp_state;
845}
846
847static uint32_t
848lpfc_rcv_els_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
849 void *arg, uint32_t evt)
850{
851 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
852 struct lpfc_hba *phba = vport->phba;
853 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
854
855 /* software abort outstanding PLOGI */
856 lpfc_els_abort(phba, ndlp);
857
858 if (evt == NLP_EVT_RCV_LOGO) {
859 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
860 } else {
861 lpfc_issue_els_logo(vport, ndlp, 0);
862 }
863
864 /* Put ndlp in npr state set plogi timer for 1 sec */
865 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ * 1);
866 spin_lock_irq(shost->host_lock);
867 ndlp->nlp_flag |= NLP_DELAY_TMO;
868 spin_unlock_irq(shost->host_lock);
869 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
870 ndlp->nlp_prev_state = NLP_STE_PLOGI_ISSUE;
871 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
872
873 return ndlp->nlp_state;
874}
875
876static uint32_t
877lpfc_cmpl_plogi_plogi_issue(struct lpfc_vport *vport,
878 struct lpfc_nodelist *ndlp,
879 void *arg,
880 uint32_t evt)
881{
882 struct lpfc_hba *phba = vport->phba;
883 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
884 struct lpfc_iocbq *cmdiocb, *rspiocb;
885 struct lpfc_dmabuf *pcmd, *prsp, *mp;
886 uint32_t *lp;
887 IOCB_t *irsp;
888 struct serv_parm *sp;
889 LPFC_MBOXQ_t *mbox;
890
891 cmdiocb = (struct lpfc_iocbq *) arg;
892 rspiocb = cmdiocb->context_un.rsp_iocb;
893
894 if (ndlp->nlp_flag & NLP_ACC_REGLOGIN) {
895 /* Recovery from PLOGI collision logic */
896 return ndlp->nlp_state;
897 }
898
899 irsp = &rspiocb->iocb;
900
901 if (irsp->ulpStatus)
902 goto out;
903
904 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
905
906 prsp = list_get_first(&pcmd->list, struct lpfc_dmabuf, list);
907
908 lp = (uint32_t *) prsp->virt;
909 sp = (struct serv_parm *) ((uint8_t *) lp + sizeof (uint32_t));
910
911 /* Some switches have FDMI servers returning 0 for WWN */
912 if ((ndlp->nlp_DID != FDMI_DID) &&
913 (wwn_to_u64(sp->portName.u.wwn) == 0 ||
914 wwn_to_u64(sp->nodeName.u.wwn) == 0)) {
915 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
916 "0142 PLOGI RSP: Invalid WWN.\n");
917 goto out;
918 }
919 if (!lpfc_check_sparm(vport, ndlp, sp, CLASS3, 0))
920 goto out;
921 /* PLOGI chkparm OK */
922 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
923 "0121 PLOGI chkparm OK Data: x%x x%x x%x x%x\n",
924 ndlp->nlp_DID, ndlp->nlp_state,
925 ndlp->nlp_flag, ndlp->nlp_rpi);
926 if (vport->cfg_fcp_class == 2 && (sp->cls2.classValid))
927 ndlp->nlp_fcp_info |= CLASS2;
928 else
929 ndlp->nlp_fcp_info |= CLASS3;
930
931 ndlp->nlp_class_sup = 0;
932 if (sp->cls1.classValid)
933 ndlp->nlp_class_sup |= FC_COS_CLASS1;
934 if (sp->cls2.classValid)
935 ndlp->nlp_class_sup |= FC_COS_CLASS2;
936 if (sp->cls3.classValid)
937 ndlp->nlp_class_sup |= FC_COS_CLASS3;
938 if (sp->cls4.classValid)
939 ndlp->nlp_class_sup |= FC_COS_CLASS4;
940 ndlp->nlp_maxframe =
941 ((sp->cmn.bbRcvSizeMsb & 0x0F) << 8) | sp->cmn.bbRcvSizeLsb;
942
943 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
944 if (!mbox) {
945 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
946 "0133 PLOGI: no memory for reg_login "
947 "Data: x%x x%x x%x x%x\n",
948 ndlp->nlp_DID, ndlp->nlp_state,
949 ndlp->nlp_flag, ndlp->nlp_rpi);
950 goto out;
951 }
952
953 lpfc_unreg_rpi(vport, ndlp);
954
955 if (lpfc_reg_rpi(phba, vport->vpi, irsp->un.elsreq64.remoteID,
956 (uint8_t *) sp, mbox, 0) == 0) {
957 switch (ndlp->nlp_DID) {
958 case NameServer_DID:
959 mbox->mbox_cmpl = lpfc_mbx_cmpl_ns_reg_login;
960 break;
961 case FDMI_DID:
962 mbox->mbox_cmpl = lpfc_mbx_cmpl_fdmi_reg_login;
963 break;
964 default:
965 mbox->mbox_cmpl = lpfc_mbx_cmpl_reg_login;
966 }
967 mbox->context2 = lpfc_nlp_get(ndlp);
968 mbox->vport = vport;
969 if (lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT)
970 != MBX_NOT_FINISHED) {
971 lpfc_nlp_set_state(vport, ndlp,
972 NLP_STE_REG_LOGIN_ISSUE);
973 return ndlp->nlp_state;
974 }
975 /* decrement node reference count to the failed mbox
976 * command
977 */
978 lpfc_nlp_put(ndlp);
979 mp = (struct lpfc_dmabuf *) mbox->context1;
980 lpfc_mbuf_free(phba, mp->virt, mp->phys);
981 kfree(mp);
982 mempool_free(mbox, phba->mbox_mem_pool);
983
984 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
985 "0134 PLOGI: cannot issue reg_login "
986 "Data: x%x x%x x%x x%x\n",
987 ndlp->nlp_DID, ndlp->nlp_state,
988 ndlp->nlp_flag, ndlp->nlp_rpi);
989 } else {
990 mempool_free(mbox, phba->mbox_mem_pool);
991
992 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
993 "0135 PLOGI: cannot format reg_login "
994 "Data: x%x x%x x%x x%x\n",
995 ndlp->nlp_DID, ndlp->nlp_state,
996 ndlp->nlp_flag, ndlp->nlp_rpi);
997 }
998
999
1000out:
1001 if (ndlp->nlp_DID == NameServer_DID) {
1002 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
1003 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
1004 "0261 Cannot Register NameServer login\n");
1005 }
1006
1007 spin_lock_irq(shost->host_lock);
1008 ndlp->nlp_flag |= NLP_DEFER_RM;
1009 spin_unlock_irq(shost->host_lock);
1010 return NLP_STE_FREED_NODE;
1011}
1012
1013static uint32_t
1014lpfc_cmpl_logo_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1015 void *arg, uint32_t evt)
1016{
1017 return ndlp->nlp_state;
1018}
1019
1020static uint32_t
1021lpfc_cmpl_reglogin_plogi_issue(struct lpfc_vport *vport,
1022 struct lpfc_nodelist *ndlp, void *arg, uint32_t evt)
1023{
1024 struct lpfc_hba *phba;
1025 LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg;
1026 MAILBOX_t *mb = &pmb->u.mb;
1027 uint16_t rpi;
1028
1029 phba = vport->phba;
1030 /* Release the RPI */
1031 if (!(phba->pport->load_flag & FC_UNLOADING) &&
1032 !mb->mbxStatus) {
1033 rpi = pmb->u.mb.un.varWords[0];
1034 lpfc_release_rpi(phba, vport, rpi);
1035 }
1036 return ndlp->nlp_state;
1037}
1038
1039static uint32_t
1040lpfc_device_rm_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1041 void *arg, uint32_t evt)
1042{
1043 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1044
1045 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1046 spin_lock_irq(shost->host_lock);
1047 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1048 spin_unlock_irq(shost->host_lock);
1049 return ndlp->nlp_state;
1050 } else {
1051 /* software abort outstanding PLOGI */
1052 lpfc_els_abort(vport->phba, ndlp);
1053
1054 lpfc_drop_node(vport, ndlp);
1055 return NLP_STE_FREED_NODE;
1056 }
1057}
1058
1059static uint32_t
1060lpfc_device_recov_plogi_issue(struct lpfc_vport *vport,
1061 struct lpfc_nodelist *ndlp,
1062 void *arg,
1063 uint32_t evt)
1064{
1065 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1066 struct lpfc_hba *phba = vport->phba;
1067
1068 /* Don't do anything that will mess up processing of the
1069 * previous RSCN.
1070 */
1071 if (vport->fc_flag & FC_RSCN_DEFERRED)
1072 return ndlp->nlp_state;
1073
1074 /* software abort outstanding PLOGI */
1075 lpfc_els_abort(phba, ndlp);
1076
1077 ndlp->nlp_prev_state = NLP_STE_PLOGI_ISSUE;
1078 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1079 spin_lock_irq(shost->host_lock);
1080 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1081 spin_unlock_irq(shost->host_lock);
1082
1083 return ndlp->nlp_state;
1084}
1085
1086static uint32_t
1087lpfc_rcv_plogi_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1088 void *arg, uint32_t evt)
1089{
1090 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1091 struct lpfc_hba *phba = vport->phba;
1092 struct lpfc_iocbq *cmdiocb;
1093
1094 /* software abort outstanding ADISC */
1095 lpfc_els_abort(phba, ndlp);
1096
1097 cmdiocb = (struct lpfc_iocbq *) arg;
1098
1099 if (lpfc_rcv_plogi(vport, ndlp, cmdiocb)) {
1100 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1101 spin_lock_irq(shost->host_lock);
1102 ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
1103 spin_unlock_irq(shost->host_lock);
1104 if (vport->num_disc_nodes)
1105 lpfc_more_adisc(vport);
1106 }
1107 return ndlp->nlp_state;
1108 }
1109 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1110 lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
1111 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
1112
1113 return ndlp->nlp_state;
1114}
1115
1116static uint32_t
1117lpfc_rcv_prli_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1118 void *arg, uint32_t evt)
1119{
1120 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1121
1122 lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1123 return ndlp->nlp_state;
1124}
1125
1126static uint32_t
1127lpfc_rcv_logo_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1128 void *arg, uint32_t evt)
1129{
1130 struct lpfc_hba *phba = vport->phba;
1131 struct lpfc_iocbq *cmdiocb;
1132
1133 cmdiocb = (struct lpfc_iocbq *) arg;
1134
1135 /* software abort outstanding ADISC */
1136 lpfc_els_abort(phba, ndlp);
1137
1138 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1139 return ndlp->nlp_state;
1140}
1141
1142static uint32_t
1143lpfc_rcv_padisc_adisc_issue(struct lpfc_vport *vport,
1144 struct lpfc_nodelist *ndlp,
1145 void *arg, uint32_t evt)
1146{
1147 struct lpfc_iocbq *cmdiocb;
1148
1149 cmdiocb = (struct lpfc_iocbq *) arg;
1150
1151 lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1152 return ndlp->nlp_state;
1153}
1154
1155static uint32_t
1156lpfc_rcv_prlo_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1157 void *arg, uint32_t evt)
1158{
1159 struct lpfc_iocbq *cmdiocb;
1160
1161 cmdiocb = (struct lpfc_iocbq *) arg;
1162
1163 /* Treat like rcv logo */
1164 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_PRLO);
1165 return ndlp->nlp_state;
1166}
1167
1168static uint32_t
1169lpfc_cmpl_adisc_adisc_issue(struct lpfc_vport *vport,
1170 struct lpfc_nodelist *ndlp,
1171 void *arg, uint32_t evt)
1172{
1173 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1174 struct lpfc_hba *phba = vport->phba;
1175 struct lpfc_iocbq *cmdiocb, *rspiocb;
1176 IOCB_t *irsp;
1177 ADISC *ap;
1178 int rc;
1179
1180 cmdiocb = (struct lpfc_iocbq *) arg;
1181 rspiocb = cmdiocb->context_un.rsp_iocb;
1182
1183 ap = (ADISC *)lpfc_check_elscmpl_iocb(phba, cmdiocb, rspiocb);
1184 irsp = &rspiocb->iocb;
1185
1186 if ((irsp->ulpStatus) ||
1187 (!lpfc_check_adisc(vport, ndlp, &ap->nodeName, &ap->portName))) {
1188 /* 1 sec timeout */
1189 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ);
1190 spin_lock_irq(shost->host_lock);
1191 ndlp->nlp_flag |= NLP_DELAY_TMO;
1192 spin_unlock_irq(shost->host_lock);
1193 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
1194
1195 memset(&ndlp->nlp_nodename, 0, sizeof(struct lpfc_name));
1196 memset(&ndlp->nlp_portname, 0, sizeof(struct lpfc_name));
1197
1198 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1199 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1200 lpfc_unreg_rpi(vport, ndlp);
1201 return ndlp->nlp_state;
1202 }
1203
1204 if (phba->sli_rev == LPFC_SLI_REV4) {
1205 rc = lpfc_sli4_resume_rpi(ndlp);
1206 if (rc) {
1207 /* Stay in state and retry. */
1208 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1209 return ndlp->nlp_state;
1210 }
1211 }
1212
1213 if (ndlp->nlp_type & NLP_FCP_TARGET) {
1214 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1215 lpfc_nlp_set_state(vport, ndlp, NLP_STE_MAPPED_NODE);
1216 } else {
1217 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1218 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1219 }
1220
1221 return ndlp->nlp_state;
1222}
1223
1224static uint32_t
1225lpfc_device_rm_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1226 void *arg, uint32_t evt)
1227{
1228 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1229
1230 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1231 spin_lock_irq(shost->host_lock);
1232 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1233 spin_unlock_irq(shost->host_lock);
1234 return ndlp->nlp_state;
1235 } else {
1236 /* software abort outstanding ADISC */
1237 lpfc_els_abort(vport->phba, ndlp);
1238
1239 lpfc_drop_node(vport, ndlp);
1240 return NLP_STE_FREED_NODE;
1241 }
1242}
1243
1244static uint32_t
1245lpfc_device_recov_adisc_issue(struct lpfc_vport *vport,
1246 struct lpfc_nodelist *ndlp,
1247 void *arg,
1248 uint32_t evt)
1249{
1250 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1251 struct lpfc_hba *phba = vport->phba;
1252
1253 /* Don't do anything that will mess up processing of the
1254 * previous RSCN.
1255 */
1256 if (vport->fc_flag & FC_RSCN_DEFERRED)
1257 return ndlp->nlp_state;
1258
1259 /* software abort outstanding ADISC */
1260 lpfc_els_abort(phba, ndlp);
1261
1262 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1263 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1264 spin_lock_irq(shost->host_lock);
1265 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1266 spin_unlock_irq(shost->host_lock);
1267 lpfc_disc_set_adisc(vport, ndlp);
1268 return ndlp->nlp_state;
1269}
1270
1271static uint32_t
1272lpfc_rcv_plogi_reglogin_issue(struct lpfc_vport *vport,
1273 struct lpfc_nodelist *ndlp,
1274 void *arg,
1275 uint32_t evt)
1276{
1277 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1278
1279 lpfc_rcv_plogi(vport, ndlp, cmdiocb);
1280 return ndlp->nlp_state;
1281}
1282
1283static uint32_t
1284lpfc_rcv_prli_reglogin_issue(struct lpfc_vport *vport,
1285 struct lpfc_nodelist *ndlp,
1286 void *arg,
1287 uint32_t evt)
1288{
1289 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1290
1291 lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1292 return ndlp->nlp_state;
1293}
1294
1295static uint32_t
1296lpfc_rcv_logo_reglogin_issue(struct lpfc_vport *vport,
1297 struct lpfc_nodelist *ndlp,
1298 void *arg,
1299 uint32_t evt)
1300{
1301 struct lpfc_hba *phba = vport->phba;
1302 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1303 LPFC_MBOXQ_t *mb;
1304 LPFC_MBOXQ_t *nextmb;
1305 struct lpfc_dmabuf *mp;
1306
1307 cmdiocb = (struct lpfc_iocbq *) arg;
1308
1309 /* cleanup any ndlp on mbox q waiting for reglogin cmpl */
1310 if ((mb = phba->sli.mbox_active)) {
1311 if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) &&
1312 (ndlp == (struct lpfc_nodelist *) mb->context2)) {
1313 lpfc_nlp_put(ndlp);
1314 mb->context2 = NULL;
1315 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
1316 }
1317 }
1318
1319 spin_lock_irq(&phba->hbalock);
1320 list_for_each_entry_safe(mb, nextmb, &phba->sli.mboxq, list) {
1321 if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) &&
1322 (ndlp == (struct lpfc_nodelist *) mb->context2)) {
1323 if (phba->sli_rev == LPFC_SLI_REV4) {
1324 spin_unlock_irq(&phba->hbalock);
1325 lpfc_sli4_free_rpi(phba,
1326 mb->u.mb.un.varRegLogin.rpi);
1327 spin_lock_irq(&phba->hbalock);
1328 }
1329 mp = (struct lpfc_dmabuf *) (mb->context1);
1330 if (mp) {
1331 __lpfc_mbuf_free(phba, mp->virt, mp->phys);
1332 kfree(mp);
1333 }
1334 lpfc_nlp_put(ndlp);
1335 list_del(&mb->list);
1336 phba->sli.mboxq_cnt--;
1337 mempool_free(mb, phba->mbox_mem_pool);
1338 }
1339 }
1340 spin_unlock_irq(&phba->hbalock);
1341
1342 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1343 return ndlp->nlp_state;
1344}
1345
1346static uint32_t
1347lpfc_rcv_padisc_reglogin_issue(struct lpfc_vport *vport,
1348 struct lpfc_nodelist *ndlp,
1349 void *arg,
1350 uint32_t evt)
1351{
1352 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1353
1354 lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1355 return ndlp->nlp_state;
1356}
1357
1358static uint32_t
1359lpfc_rcv_prlo_reglogin_issue(struct lpfc_vport *vport,
1360 struct lpfc_nodelist *ndlp,
1361 void *arg,
1362 uint32_t evt)
1363{
1364 struct lpfc_iocbq *cmdiocb;
1365
1366 cmdiocb = (struct lpfc_iocbq *) arg;
1367 lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
1368 return ndlp->nlp_state;
1369}
1370
1371static uint32_t
1372lpfc_cmpl_reglogin_reglogin_issue(struct lpfc_vport *vport,
1373 struct lpfc_nodelist *ndlp,
1374 void *arg,
1375 uint32_t evt)
1376{
1377 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1378 LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg;
1379 MAILBOX_t *mb = &pmb->u.mb;
1380 uint32_t did = mb->un.varWords[1];
1381
1382 if (mb->mbxStatus) {
1383 /* RegLogin failed */
1384 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
1385 "0246 RegLogin failed Data: x%x x%x x%x\n",
1386 did, mb->mbxStatus, vport->port_state);
1387 /*
1388 * If RegLogin failed due to lack of HBA resources do not
1389 * retry discovery.
1390 */
1391 if (mb->mbxStatus == MBXERR_RPI_FULL) {
1392 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1393 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1394 return ndlp->nlp_state;
1395 }
1396
1397 /* Put ndlp in npr state set plogi timer for 1 sec */
1398 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ * 1);
1399 spin_lock_irq(shost->host_lock);
1400 ndlp->nlp_flag |= NLP_DELAY_TMO;
1401 spin_unlock_irq(shost->host_lock);
1402 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
1403
1404 lpfc_issue_els_logo(vport, ndlp, 0);
1405 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1406 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1407 return ndlp->nlp_state;
1408 }
1409
1410 ndlp->nlp_rpi = mb->un.varWords[0];
1411 ndlp->nlp_flag |= NLP_RPI_VALID;
1412
1413 /* Only if we are not a fabric nport do we issue PRLI */
1414 if (!(ndlp->nlp_type & NLP_FABRIC)) {
1415 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1416 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PRLI_ISSUE);
1417 lpfc_issue_els_prli(vport, ndlp, 0);
1418 } else {
1419 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1420 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1421 }
1422 return ndlp->nlp_state;
1423}
1424
1425static uint32_t
1426lpfc_device_rm_reglogin_issue(struct lpfc_vport *vport,
1427 struct lpfc_nodelist *ndlp,
1428 void *arg,
1429 uint32_t evt)
1430{
1431 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1432
1433 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1434 spin_lock_irq(shost->host_lock);
1435 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1436 spin_unlock_irq(shost->host_lock);
1437 return ndlp->nlp_state;
1438 } else {
1439 lpfc_drop_node(vport, ndlp);
1440 return NLP_STE_FREED_NODE;
1441 }
1442}
1443
1444static uint32_t
1445lpfc_device_recov_reglogin_issue(struct lpfc_vport *vport,
1446 struct lpfc_nodelist *ndlp,
1447 void *arg,
1448 uint32_t evt)
1449{
1450 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1451
1452 /* Don't do anything that will mess up processing of the
1453 * previous RSCN.
1454 */
1455 if (vport->fc_flag & FC_RSCN_DEFERRED)
1456 return ndlp->nlp_state;
1457
1458 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1459 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1460 spin_lock_irq(shost->host_lock);
1461 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1462 spin_unlock_irq(shost->host_lock);
1463 lpfc_disc_set_adisc(vport, ndlp);
1464 return ndlp->nlp_state;
1465}
1466
1467static uint32_t
1468lpfc_rcv_plogi_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1469 void *arg, uint32_t evt)
1470{
1471 struct lpfc_iocbq *cmdiocb;
1472
1473 cmdiocb = (struct lpfc_iocbq *) arg;
1474
1475 lpfc_rcv_plogi(vport, ndlp, cmdiocb);
1476 return ndlp->nlp_state;
1477}
1478
1479static uint32_t
1480lpfc_rcv_prli_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1481 void *arg, uint32_t evt)
1482{
1483 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1484
1485 lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1486 return ndlp->nlp_state;
1487}
1488
1489static uint32_t
1490lpfc_rcv_logo_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1491 void *arg, uint32_t evt)
1492{
1493 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1494
1495 /* Software abort outstanding PRLI before sending acc */
1496 lpfc_els_abort(vport->phba, ndlp);
1497
1498 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1499 return ndlp->nlp_state;
1500}
1501
1502static uint32_t
1503lpfc_rcv_padisc_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1504 void *arg, uint32_t evt)
1505{
1506 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1507
1508 lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1509 return ndlp->nlp_state;
1510}
1511
1512/* This routine is envoked when we rcv a PRLO request from a nport
1513 * we are logged into. We should send back a PRLO rsp setting the
1514 * appropriate bits.
1515 * NEXT STATE = PRLI_ISSUE
1516 */
1517static uint32_t
1518lpfc_rcv_prlo_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1519 void *arg, uint32_t evt)
1520{
1521 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1522
1523 lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
1524 return ndlp->nlp_state;
1525}
1526
1527static uint32_t
1528lpfc_cmpl_prli_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1529 void *arg, uint32_t evt)
1530{
1531 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1532 struct lpfc_iocbq *cmdiocb, *rspiocb;
1533 struct lpfc_hba *phba = vport->phba;
1534 IOCB_t *irsp;
1535 PRLI *npr;
1536
1537 cmdiocb = (struct lpfc_iocbq *) arg;
1538 rspiocb = cmdiocb->context_un.rsp_iocb;
1539 npr = (PRLI *)lpfc_check_elscmpl_iocb(phba, cmdiocb, rspiocb);
1540
1541 irsp = &rspiocb->iocb;
1542 if (irsp->ulpStatus) {
1543 if ((vport->port_type == LPFC_NPIV_PORT) &&
1544 vport->cfg_restrict_login) {
1545 goto out;
1546 }
1547 ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
1548 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1549 return ndlp->nlp_state;
1550 }
1551
1552 /* Check out PRLI rsp */
1553 ndlp->nlp_type &= ~(NLP_FCP_TARGET | NLP_FCP_INITIATOR);
1554 ndlp->nlp_fcp_info &= ~NLP_FCP_2_DEVICE;
1555 if ((npr->acceptRspCode == PRLI_REQ_EXECUTED) &&
1556 (npr->prliType == PRLI_FCP_TYPE)) {
1557 if (npr->initiatorFunc)
1558 ndlp->nlp_type |= NLP_FCP_INITIATOR;
1559 if (npr->targetFunc)
1560 ndlp->nlp_type |= NLP_FCP_TARGET;
1561 if (npr->Retry)
1562 ndlp->nlp_fcp_info |= NLP_FCP_2_DEVICE;
1563 }
1564 if (!(ndlp->nlp_type & NLP_FCP_TARGET) &&
1565 (vport->port_type == LPFC_NPIV_PORT) &&
1566 vport->cfg_restrict_login) {
1567out:
1568 spin_lock_irq(shost->host_lock);
1569 ndlp->nlp_flag |= NLP_TARGET_REMOVE;
1570 spin_unlock_irq(shost->host_lock);
1571 lpfc_issue_els_logo(vport, ndlp, 0);
1572
1573 ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
1574 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1575 return ndlp->nlp_state;
1576 }
1577
1578 ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
1579 if (ndlp->nlp_type & NLP_FCP_TARGET)
1580 lpfc_nlp_set_state(vport, ndlp, NLP_STE_MAPPED_NODE);
1581 else
1582 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1583 return ndlp->nlp_state;
1584}
1585
1586/*! lpfc_device_rm_prli_issue
1587 *
1588 * \pre
1589 * \post
1590 * \param phba
1591 * \param ndlp
1592 * \param arg
1593 * \param evt
1594 * \return uint32_t
1595 *
1596 * \b Description:
1597 * This routine is envoked when we a request to remove a nport we are in the
1598 * process of PRLIing. We should software abort outstanding prli, unreg
1599 * login, send a logout. We will change node state to UNUSED_NODE, put it
1600 * on plogi list so it can be freed when LOGO completes.
1601 *
1602 */
1603
1604static uint32_t
1605lpfc_device_rm_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1606 void *arg, uint32_t evt)
1607{
1608 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1609
1610 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1611 spin_lock_irq(shost->host_lock);
1612 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1613 spin_unlock_irq(shost->host_lock);
1614 return ndlp->nlp_state;
1615 } else {
1616 /* software abort outstanding PLOGI */
1617 lpfc_els_abort(vport->phba, ndlp);
1618
1619 lpfc_drop_node(vport, ndlp);
1620 return NLP_STE_FREED_NODE;
1621 }
1622}
1623
1624
1625/*! lpfc_device_recov_prli_issue
1626 *
1627 * \pre
1628 * \post
1629 * \param phba
1630 * \param ndlp
1631 * \param arg
1632 * \param evt
1633 * \return uint32_t
1634 *
1635 * \b Description:
1636 * The routine is envoked when the state of a device is unknown, like
1637 * during a link down. We should remove the nodelist entry from the
1638 * unmapped list, issue a UNREG_LOGIN, do a software abort of the
1639 * outstanding PRLI command, then free the node entry.
1640 */
1641static uint32_t
1642lpfc_device_recov_prli_issue(struct lpfc_vport *vport,
1643 struct lpfc_nodelist *ndlp,
1644 void *arg,
1645 uint32_t evt)
1646{
1647 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1648 struct lpfc_hba *phba = vport->phba;
1649
1650 /* Don't do anything that will mess up processing of the
1651 * previous RSCN.
1652 */
1653 if (vport->fc_flag & FC_RSCN_DEFERRED)
1654 return ndlp->nlp_state;
1655
1656 /* software abort outstanding PRLI */
1657 lpfc_els_abort(phba, ndlp);
1658
1659 ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
1660 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1661 spin_lock_irq(shost->host_lock);
1662 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1663 spin_unlock_irq(shost->host_lock);
1664 lpfc_disc_set_adisc(vport, ndlp);
1665 return ndlp->nlp_state;
1666}
1667
1668static uint32_t
1669lpfc_rcv_plogi_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1670 void *arg, uint32_t evt)
1671{
1672 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1673
1674 lpfc_rcv_plogi(vport, ndlp, cmdiocb);
1675 return ndlp->nlp_state;
1676}
1677
1678static uint32_t
1679lpfc_rcv_prli_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1680 void *arg, uint32_t evt)
1681{
1682 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1683
1684 lpfc_rcv_prli(vport, ndlp, cmdiocb);
1685 lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1686 return ndlp->nlp_state;
1687}
1688
1689static uint32_t
1690lpfc_rcv_logo_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1691 void *arg, uint32_t evt)
1692{
1693 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1694
1695 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1696 return ndlp->nlp_state;
1697}
1698
1699static uint32_t
1700lpfc_rcv_padisc_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1701 void *arg, uint32_t evt)
1702{
1703 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1704
1705 lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1706 return ndlp->nlp_state;
1707}
1708
1709static uint32_t
1710lpfc_rcv_prlo_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1711 void *arg, uint32_t evt)
1712{
1713 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1714
1715 lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
1716 return ndlp->nlp_state;
1717}
1718
1719static uint32_t
1720lpfc_device_recov_unmap_node(struct lpfc_vport *vport,
1721 struct lpfc_nodelist *ndlp,
1722 void *arg,
1723 uint32_t evt)
1724{
1725 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1726
1727 ndlp->nlp_prev_state = NLP_STE_UNMAPPED_NODE;
1728 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1729 spin_lock_irq(shost->host_lock);
1730 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1731 spin_unlock_irq(shost->host_lock);
1732 lpfc_disc_set_adisc(vport, ndlp);
1733
1734 return ndlp->nlp_state;
1735}
1736
1737static uint32_t
1738lpfc_rcv_plogi_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1739 void *arg, uint32_t evt)
1740{
1741 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1742
1743 lpfc_rcv_plogi(vport, ndlp, cmdiocb);
1744 return ndlp->nlp_state;
1745}
1746
1747static uint32_t
1748lpfc_rcv_prli_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1749 void *arg, uint32_t evt)
1750{
1751 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1752
1753 lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1754 return ndlp->nlp_state;
1755}
1756
1757static uint32_t
1758lpfc_rcv_logo_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1759 void *arg, uint32_t evt)
1760{
1761 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1762
1763 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1764 return ndlp->nlp_state;
1765}
1766
1767static uint32_t
1768lpfc_rcv_padisc_mapped_node(struct lpfc_vport *vport,
1769 struct lpfc_nodelist *ndlp,
1770 void *arg, uint32_t evt)
1771{
1772 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1773
1774 lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1775 return ndlp->nlp_state;
1776}
1777
1778static uint32_t
1779lpfc_rcv_prlo_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1780 void *arg, uint32_t evt)
1781{
1782 struct lpfc_hba *phba = vport->phba;
1783 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1784
1785 /* flush the target */
1786 lpfc_sli_abort_iocb(vport, &phba->sli.ring[phba->sli.fcp_ring],
1787 ndlp->nlp_sid, 0, LPFC_CTX_TGT);
1788
1789 /* Treat like rcv logo */
1790 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_PRLO);
1791 return ndlp->nlp_state;
1792}
1793
1794static uint32_t
1795lpfc_device_recov_mapped_node(struct lpfc_vport *vport,
1796 struct lpfc_nodelist *ndlp,
1797 void *arg,
1798 uint32_t evt)
1799{
1800 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1801
1802 ndlp->nlp_prev_state = NLP_STE_MAPPED_NODE;
1803 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1804 spin_lock_irq(shost->host_lock);
1805 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1806 spin_unlock_irq(shost->host_lock);
1807 lpfc_disc_set_adisc(vport, ndlp);
1808 return ndlp->nlp_state;
1809}
1810
1811static uint32_t
1812lpfc_rcv_plogi_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1813 void *arg, uint32_t evt)
1814{
1815 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1816 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1817
1818 /* Ignore PLOGI if we have an outstanding LOGO */
1819 if (ndlp->nlp_flag & (NLP_LOGO_SND | NLP_LOGO_ACC))
1820 return ndlp->nlp_state;
1821 if (lpfc_rcv_plogi(vport, ndlp, cmdiocb)) {
1822 lpfc_cancel_retry_delay_tmo(vport, ndlp);
1823 spin_lock_irq(shost->host_lock);
1824 ndlp->nlp_flag &= ~(NLP_NPR_ADISC | NLP_NPR_2B_DISC);
1825 spin_unlock_irq(shost->host_lock);
1826 } else if (!(ndlp->nlp_flag & NLP_NPR_2B_DISC)) {
1827 /* send PLOGI immediately, move to PLOGI issue state */
1828 if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) {
1829 ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
1830 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
1831 lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
1832 }
1833 }
1834 return ndlp->nlp_state;
1835}
1836
1837static uint32_t
1838lpfc_rcv_prli_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1839 void *arg, uint32_t evt)
1840{
1841 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1842 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1843 struct ls_rjt stat;
1844
1845 memset(&stat, 0, sizeof (struct ls_rjt));
1846 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
1847 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
1848 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
1849
1850 if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) {
1851 if (ndlp->nlp_flag & NLP_NPR_ADISC) {
1852 spin_lock_irq(shost->host_lock);
1853 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
1854 ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
1855 spin_unlock_irq(shost->host_lock);
1856 lpfc_nlp_set_state(vport, ndlp, NLP_STE_ADISC_ISSUE);
1857 lpfc_issue_els_adisc(vport, ndlp, 0);
1858 } else {
1859 ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
1860 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
1861 lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
1862 }
1863 }
1864 return ndlp->nlp_state;
1865}
1866
1867static uint32_t
1868lpfc_rcv_logo_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1869 void *arg, uint32_t evt)
1870{
1871 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1872
1873 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1874 return ndlp->nlp_state;
1875}
1876
1877static uint32_t
1878lpfc_rcv_padisc_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1879 void *arg, uint32_t evt)
1880{
1881 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1882
1883 lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1884 /*
1885 * Do not start discovery if discovery is about to start
1886 * or discovery in progress for this node. Starting discovery
1887 * here will affect the counting of discovery threads.
1888 */
1889 if (!(ndlp->nlp_flag & NLP_DELAY_TMO) &&
1890 !(ndlp->nlp_flag & NLP_NPR_2B_DISC)) {
1891 if (ndlp->nlp_flag & NLP_NPR_ADISC) {
1892 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
1893 ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
1894 lpfc_nlp_set_state(vport, ndlp, NLP_STE_ADISC_ISSUE);
1895 lpfc_issue_els_adisc(vport, ndlp, 0);
1896 } else {
1897 ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
1898 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
1899 lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
1900 }
1901 }
1902 return ndlp->nlp_state;
1903}
1904
1905static uint32_t
1906lpfc_rcv_prlo_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1907 void *arg, uint32_t evt)
1908{
1909 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1910 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1911
1912 spin_lock_irq(shost->host_lock);
1913 ndlp->nlp_flag |= NLP_LOGO_ACC;
1914 spin_unlock_irq(shost->host_lock);
1915
1916 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
1917
1918 if ((ndlp->nlp_flag & NLP_DELAY_TMO) == 0) {
1919 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ * 1);
1920 spin_lock_irq(shost->host_lock);
1921 ndlp->nlp_flag |= NLP_DELAY_TMO;
1922 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
1923 spin_unlock_irq(shost->host_lock);
1924 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
1925 } else {
1926 spin_lock_irq(shost->host_lock);
1927 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
1928 spin_unlock_irq(shost->host_lock);
1929 }
1930 return ndlp->nlp_state;
1931}
1932
1933static uint32_t
1934lpfc_cmpl_plogi_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1935 void *arg, uint32_t evt)
1936{
1937 struct lpfc_iocbq *cmdiocb, *rspiocb;
1938 IOCB_t *irsp;
1939
1940 cmdiocb = (struct lpfc_iocbq *) arg;
1941 rspiocb = cmdiocb->context_un.rsp_iocb;
1942
1943 irsp = &rspiocb->iocb;
1944 if (irsp->ulpStatus) {
1945 ndlp->nlp_flag |= NLP_DEFER_RM;
1946 return NLP_STE_FREED_NODE;
1947 }
1948 return ndlp->nlp_state;
1949}
1950
1951static uint32_t
1952lpfc_cmpl_prli_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1953 void *arg, uint32_t evt)
1954{
1955 struct lpfc_iocbq *cmdiocb, *rspiocb;
1956 IOCB_t *irsp;
1957
1958 cmdiocb = (struct lpfc_iocbq *) arg;
1959 rspiocb = cmdiocb->context_un.rsp_iocb;
1960
1961 irsp = &rspiocb->iocb;
1962 if (irsp->ulpStatus && (ndlp->nlp_flag & NLP_NODEV_REMOVE)) {
1963 lpfc_drop_node(vport, ndlp);
1964 return NLP_STE_FREED_NODE;
1965 }
1966 return ndlp->nlp_state;
1967}
1968
1969static uint32_t
1970lpfc_cmpl_logo_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1971 void *arg, uint32_t evt)
1972{
1973 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1974 if (ndlp->nlp_DID == Fabric_DID) {
1975 spin_lock_irq(shost->host_lock);
1976 vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP);
1977 spin_unlock_irq(shost->host_lock);
1978 }
1979 lpfc_unreg_rpi(vport, ndlp);
1980 return ndlp->nlp_state;
1981}
1982
1983static uint32_t
1984lpfc_cmpl_adisc_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1985 void *arg, uint32_t evt)
1986{
1987 struct lpfc_iocbq *cmdiocb, *rspiocb;
1988 IOCB_t *irsp;
1989
1990 cmdiocb = (struct lpfc_iocbq *) arg;
1991 rspiocb = cmdiocb->context_un.rsp_iocb;
1992
1993 irsp = &rspiocb->iocb;
1994 if (irsp->ulpStatus && (ndlp->nlp_flag & NLP_NODEV_REMOVE)) {
1995 lpfc_drop_node(vport, ndlp);
1996 return NLP_STE_FREED_NODE;
1997 }
1998 return ndlp->nlp_state;
1999}
2000
2001static uint32_t
2002lpfc_cmpl_reglogin_npr_node(struct lpfc_vport *vport,
2003 struct lpfc_nodelist *ndlp,
2004 void *arg, uint32_t evt)
2005{
2006 LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg;
2007 MAILBOX_t *mb = &pmb->u.mb;
2008
2009 if (!mb->mbxStatus) {
2010 ndlp->nlp_rpi = mb->un.varWords[0];
2011 ndlp->nlp_flag |= NLP_RPI_VALID;
2012 } else {
2013 if (ndlp->nlp_flag & NLP_NODEV_REMOVE) {
2014 lpfc_drop_node(vport, ndlp);
2015 return NLP_STE_FREED_NODE;
2016 }
2017 }
2018 return ndlp->nlp_state;
2019}
2020
2021static uint32_t
2022lpfc_device_rm_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2023 void *arg, uint32_t evt)
2024{
2025 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2026
2027 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
2028 spin_lock_irq(shost->host_lock);
2029 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
2030 spin_unlock_irq(shost->host_lock);
2031 return ndlp->nlp_state;
2032 }
2033 lpfc_drop_node(vport, ndlp);
2034 return NLP_STE_FREED_NODE;
2035}
2036
2037static uint32_t
2038lpfc_device_recov_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2039 void *arg, uint32_t evt)
2040{
2041 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2042
2043 /* Don't do anything that will mess up processing of the
2044 * previous RSCN.
2045 */
2046 if (vport->fc_flag & FC_RSCN_DEFERRED)
2047 return ndlp->nlp_state;
2048
2049 lpfc_cancel_retry_delay_tmo(vport, ndlp);
2050 spin_lock_irq(shost->host_lock);
2051 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
2052 spin_unlock_irq(shost->host_lock);
2053 return ndlp->nlp_state;
2054}
2055
2056
2057/* This next section defines the NPort Discovery State Machine */
2058
2059/* There are 4 different double linked lists nodelist entries can reside on.
2060 * The plogi list and adisc list are used when Link Up discovery or RSCN
2061 * processing is needed. Each list holds the nodes that we will send PLOGI
2062 * or ADISC on. These lists will keep track of what nodes will be effected
2063 * by an RSCN, or a Link Up (Typically, all nodes are effected on Link Up).
2064 * The unmapped_list will contain all nodes that we have successfully logged
2065 * into at the Fibre Channel level. The mapped_list will contain all nodes
2066 * that are mapped FCP targets.
2067 */
2068/*
2069 * The bind list is a list of undiscovered (potentially non-existent) nodes
2070 * that we have saved binding information on. This information is used when
2071 * nodes transition from the unmapped to the mapped list.
2072 */
2073/* For UNUSED_NODE state, the node has just been allocated .
2074 * For PLOGI_ISSUE and REG_LOGIN_ISSUE, the node is on
2075 * the PLOGI list. For REG_LOGIN_COMPL, the node is taken off the PLOGI list
2076 * and put on the unmapped list. For ADISC processing, the node is taken off
2077 * the ADISC list and placed on either the mapped or unmapped list (depending
2078 * on its previous state). Once on the unmapped list, a PRLI is issued and the
2079 * state changed to PRLI_ISSUE. When the PRLI completion occurs, the state is
2080 * changed to UNMAPPED_NODE. If the completion indicates a mapped
2081 * node, the node is taken off the unmapped list. The binding list is checked
2082 * for a valid binding, or a binding is automatically assigned. If binding
2083 * assignment is unsuccessful, the node is left on the unmapped list. If
2084 * binding assignment is successful, the associated binding list entry (if
2085 * any) is removed, and the node is placed on the mapped list.
2086 */
2087/*
2088 * For a Link Down, all nodes on the ADISC, PLOGI, unmapped or mapped
2089 * lists will receive a DEVICE_RECOVERY event. If the linkdown or devloss timers
2090 * expire, all effected nodes will receive a DEVICE_RM event.
2091 */
2092/*
2093 * For a Link Up or RSCN, all nodes will move from the mapped / unmapped lists
2094 * to either the ADISC or PLOGI list. After a Nameserver query or ALPA loopmap
2095 * check, additional nodes may be added or removed (via DEVICE_RM) to / from
2096 * the PLOGI or ADISC lists. Once the PLOGI and ADISC lists are populated,
2097 * we will first process the ADISC list. 32 entries are processed initially and
2098 * ADISC is initited for each one. Completions / Events for each node are
2099 * funnelled thru the state machine. As each node finishes ADISC processing, it
2100 * starts ADISC for any nodes waiting for ADISC processing. If no nodes are
2101 * waiting, and the ADISC list count is identically 0, then we are done. For
2102 * Link Up discovery, since all nodes on the PLOGI list are UNREG_LOGIN'ed, we
2103 * can issue a CLEAR_LA and reenable Link Events. Next we will process the PLOGI
2104 * list. 32 entries are processed initially and PLOGI is initited for each one.
2105 * Completions / Events for each node are funnelled thru the state machine. As
2106 * each node finishes PLOGI processing, it starts PLOGI for any nodes waiting
2107 * for PLOGI processing. If no nodes are waiting, and the PLOGI list count is
2108 * indentically 0, then we are done. We have now completed discovery / RSCN
2109 * handling. Upon completion, ALL nodes should be on either the mapped or
2110 * unmapped lists.
2111 */
2112
2113static uint32_t (*lpfc_disc_action[NLP_STE_MAX_STATE * NLP_EVT_MAX_EVENT])
2114 (struct lpfc_vport *, struct lpfc_nodelist *, void *, uint32_t) = {
2115 /* Action routine Event Current State */
2116 lpfc_rcv_plogi_unused_node, /* RCV_PLOGI UNUSED_NODE */
2117 lpfc_rcv_els_unused_node, /* RCV_PRLI */
2118 lpfc_rcv_logo_unused_node, /* RCV_LOGO */
2119 lpfc_rcv_els_unused_node, /* RCV_ADISC */
2120 lpfc_rcv_els_unused_node, /* RCV_PDISC */
2121 lpfc_rcv_els_unused_node, /* RCV_PRLO */
2122 lpfc_disc_illegal, /* CMPL_PLOGI */
2123 lpfc_disc_illegal, /* CMPL_PRLI */
2124 lpfc_cmpl_logo_unused_node, /* CMPL_LOGO */
2125 lpfc_disc_illegal, /* CMPL_ADISC */
2126 lpfc_disc_illegal, /* CMPL_REG_LOGIN */
2127 lpfc_device_rm_unused_node, /* DEVICE_RM */
2128 lpfc_disc_illegal, /* DEVICE_RECOVERY */
2129
2130 lpfc_rcv_plogi_plogi_issue, /* RCV_PLOGI PLOGI_ISSUE */
2131 lpfc_rcv_prli_plogi_issue, /* RCV_PRLI */
2132 lpfc_rcv_logo_plogi_issue, /* RCV_LOGO */
2133 lpfc_rcv_els_plogi_issue, /* RCV_ADISC */
2134 lpfc_rcv_els_plogi_issue, /* RCV_PDISC */
2135 lpfc_rcv_els_plogi_issue, /* RCV_PRLO */
2136 lpfc_cmpl_plogi_plogi_issue, /* CMPL_PLOGI */
2137 lpfc_disc_illegal, /* CMPL_PRLI */
2138 lpfc_cmpl_logo_plogi_issue, /* CMPL_LOGO */
2139 lpfc_disc_illegal, /* CMPL_ADISC */
2140 lpfc_cmpl_reglogin_plogi_issue,/* CMPL_REG_LOGIN */
2141 lpfc_device_rm_plogi_issue, /* DEVICE_RM */
2142 lpfc_device_recov_plogi_issue, /* DEVICE_RECOVERY */
2143
2144 lpfc_rcv_plogi_adisc_issue, /* RCV_PLOGI ADISC_ISSUE */
2145 lpfc_rcv_prli_adisc_issue, /* RCV_PRLI */
2146 lpfc_rcv_logo_adisc_issue, /* RCV_LOGO */
2147 lpfc_rcv_padisc_adisc_issue, /* RCV_ADISC */
2148 lpfc_rcv_padisc_adisc_issue, /* RCV_PDISC */
2149 lpfc_rcv_prlo_adisc_issue, /* RCV_PRLO */
2150 lpfc_disc_illegal, /* CMPL_PLOGI */
2151 lpfc_disc_illegal, /* CMPL_PRLI */
2152 lpfc_disc_illegal, /* CMPL_LOGO */
2153 lpfc_cmpl_adisc_adisc_issue, /* CMPL_ADISC */
2154 lpfc_disc_illegal, /* CMPL_REG_LOGIN */
2155 lpfc_device_rm_adisc_issue, /* DEVICE_RM */
2156 lpfc_device_recov_adisc_issue, /* DEVICE_RECOVERY */
2157
2158 lpfc_rcv_plogi_reglogin_issue, /* RCV_PLOGI REG_LOGIN_ISSUE */
2159 lpfc_rcv_prli_reglogin_issue, /* RCV_PLOGI */
2160 lpfc_rcv_logo_reglogin_issue, /* RCV_LOGO */
2161 lpfc_rcv_padisc_reglogin_issue, /* RCV_ADISC */
2162 lpfc_rcv_padisc_reglogin_issue, /* RCV_PDISC */
2163 lpfc_rcv_prlo_reglogin_issue, /* RCV_PRLO */
2164 lpfc_cmpl_plogi_illegal, /* CMPL_PLOGI */
2165 lpfc_disc_illegal, /* CMPL_PRLI */
2166 lpfc_disc_illegal, /* CMPL_LOGO */
2167 lpfc_disc_illegal, /* CMPL_ADISC */
2168 lpfc_cmpl_reglogin_reglogin_issue,/* CMPL_REG_LOGIN */
2169 lpfc_device_rm_reglogin_issue, /* DEVICE_RM */
2170 lpfc_device_recov_reglogin_issue,/* DEVICE_RECOVERY */
2171
2172 lpfc_rcv_plogi_prli_issue, /* RCV_PLOGI PRLI_ISSUE */
2173 lpfc_rcv_prli_prli_issue, /* RCV_PRLI */
2174 lpfc_rcv_logo_prli_issue, /* RCV_LOGO */
2175 lpfc_rcv_padisc_prli_issue, /* RCV_ADISC */
2176 lpfc_rcv_padisc_prli_issue, /* RCV_PDISC */
2177 lpfc_rcv_prlo_prli_issue, /* RCV_PRLO */
2178 lpfc_cmpl_plogi_illegal, /* CMPL_PLOGI */
2179 lpfc_cmpl_prli_prli_issue, /* CMPL_PRLI */
2180 lpfc_disc_illegal, /* CMPL_LOGO */
2181 lpfc_disc_illegal, /* CMPL_ADISC */
2182 lpfc_disc_illegal, /* CMPL_REG_LOGIN */
2183 lpfc_device_rm_prli_issue, /* DEVICE_RM */
2184 lpfc_device_recov_prli_issue, /* DEVICE_RECOVERY */
2185
2186 lpfc_rcv_plogi_unmap_node, /* RCV_PLOGI UNMAPPED_NODE */
2187 lpfc_rcv_prli_unmap_node, /* RCV_PRLI */
2188 lpfc_rcv_logo_unmap_node, /* RCV_LOGO */
2189 lpfc_rcv_padisc_unmap_node, /* RCV_ADISC */
2190 lpfc_rcv_padisc_unmap_node, /* RCV_PDISC */
2191 lpfc_rcv_prlo_unmap_node, /* RCV_PRLO */
2192 lpfc_disc_illegal, /* CMPL_PLOGI */
2193 lpfc_disc_illegal, /* CMPL_PRLI */
2194 lpfc_disc_illegal, /* CMPL_LOGO */
2195 lpfc_disc_illegal, /* CMPL_ADISC */
2196 lpfc_disc_illegal, /* CMPL_REG_LOGIN */
2197 lpfc_disc_illegal, /* DEVICE_RM */
2198 lpfc_device_recov_unmap_node, /* DEVICE_RECOVERY */
2199
2200 lpfc_rcv_plogi_mapped_node, /* RCV_PLOGI MAPPED_NODE */
2201 lpfc_rcv_prli_mapped_node, /* RCV_PRLI */
2202 lpfc_rcv_logo_mapped_node, /* RCV_LOGO */
2203 lpfc_rcv_padisc_mapped_node, /* RCV_ADISC */
2204 lpfc_rcv_padisc_mapped_node, /* RCV_PDISC */
2205 lpfc_rcv_prlo_mapped_node, /* RCV_PRLO */
2206 lpfc_disc_illegal, /* CMPL_PLOGI */
2207 lpfc_disc_illegal, /* CMPL_PRLI */
2208 lpfc_disc_illegal, /* CMPL_LOGO */
2209 lpfc_disc_illegal, /* CMPL_ADISC */
2210 lpfc_disc_illegal, /* CMPL_REG_LOGIN */
2211 lpfc_disc_illegal, /* DEVICE_RM */
2212 lpfc_device_recov_mapped_node, /* DEVICE_RECOVERY */
2213
2214 lpfc_rcv_plogi_npr_node, /* RCV_PLOGI NPR_NODE */
2215 lpfc_rcv_prli_npr_node, /* RCV_PRLI */
2216 lpfc_rcv_logo_npr_node, /* RCV_LOGO */
2217 lpfc_rcv_padisc_npr_node, /* RCV_ADISC */
2218 lpfc_rcv_padisc_npr_node, /* RCV_PDISC */
2219 lpfc_rcv_prlo_npr_node, /* RCV_PRLO */
2220 lpfc_cmpl_plogi_npr_node, /* CMPL_PLOGI */
2221 lpfc_cmpl_prli_npr_node, /* CMPL_PRLI */
2222 lpfc_cmpl_logo_npr_node, /* CMPL_LOGO */
2223 lpfc_cmpl_adisc_npr_node, /* CMPL_ADISC */
2224 lpfc_cmpl_reglogin_npr_node, /* CMPL_REG_LOGIN */
2225 lpfc_device_rm_npr_node, /* DEVICE_RM */
2226 lpfc_device_recov_npr_node, /* DEVICE_RECOVERY */
2227};
2228
2229int
2230lpfc_disc_state_machine(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2231 void *arg, uint32_t evt)
2232{
2233 uint32_t cur_state, rc;
2234 uint32_t(*func) (struct lpfc_vport *, struct lpfc_nodelist *, void *,
2235 uint32_t);
2236 uint32_t got_ndlp = 0;
2237
2238 if (lpfc_nlp_get(ndlp))
2239 got_ndlp = 1;
2240
2241 cur_state = ndlp->nlp_state;
2242
2243 /* DSM in event <evt> on NPort <nlp_DID> in state <cur_state> */
2244 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
2245 "0211 DSM in event x%x on NPort x%x in "
2246 "state %d Data: x%x\n",
2247 evt, ndlp->nlp_DID, cur_state, ndlp->nlp_flag);
2248
2249 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_DSM,
2250 "DSM in: evt:%d ste:%d did:x%x",
2251 evt, cur_state, ndlp->nlp_DID);
2252
2253 func = lpfc_disc_action[(cur_state * NLP_EVT_MAX_EVENT) + evt];
2254 rc = (func) (vport, ndlp, arg, evt);
2255
2256 /* DSM out state <rc> on NPort <nlp_DID> */
2257 if (got_ndlp) {
2258 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
2259 "0212 DSM out state %d on NPort x%x Data: x%x\n",
2260 rc, ndlp->nlp_DID, ndlp->nlp_flag);
2261
2262 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_DSM,
2263 "DSM out: ste:%d did:x%x flg:x%x",
2264 rc, ndlp->nlp_DID, ndlp->nlp_flag);
2265 /* Decrement the ndlp reference count held for this function */
2266 lpfc_nlp_put(ndlp);
2267 } else {
2268 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
2269 "0213 DSM out state %d on NPort free\n", rc);
2270
2271 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_DSM,
2272 "DSM out: ste:%d did:x%x flg:x%x",
2273 rc, 0, 0);
2274 }
2275
2276 return rc;
2277}