[SCSI] lpfc 8.2.5 : Miscellaneous Fixes
[linux-2.6.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) 2004-2008 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/interrupt.h>
25
26 #include <scsi/scsi.h>
27 #include <scsi/scsi_device.h>
28 #include <scsi/scsi_host.h>
29 #include <scsi/scsi_transport_fc.h>
30
31 #include "lpfc_hw.h"
32 #include "lpfc_sli.h"
33 #include "lpfc_disc.h"
34 #include "lpfc_scsi.h"
35 #include "lpfc.h"
36 #include "lpfc_logmsg.h"
37 #include "lpfc_crtn.h"
38 #include "lpfc_vport.h"
39 #include "lpfc_debugfs.h"
40
41
42 /* Called to verify a rcv'ed ADISC was intended for us. */
43 static int
44 lpfc_check_adisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
45                  struct lpfc_name *nn, struct lpfc_name *pn)
46 {
47         /* Compare the ADISC rsp WWNN / WWPN matches our internal node
48          * table entry for that node.
49          */
50         if (memcmp(nn, &ndlp->nlp_nodename, sizeof (struct lpfc_name)))
51                 return 0;
52
53         if (memcmp(pn, &ndlp->nlp_portname, sizeof (struct lpfc_name)))
54                 return 0;
55
56         /* we match, return success */
57         return 1;
58 }
59
60 int
61 lpfc_check_sparm(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
62                  struct serv_parm * sp, uint32_t class)
63 {
64         volatile struct serv_parm *hsp = &vport->fc_sparam;
65         uint16_t hsp_value, ssp_value = 0;
66
67         /*
68          * The receive data field size and buffer-to-buffer receive data field
69          * size entries are 16 bits but are represented as two 8-bit fields in
70          * the driver data structure to account for rsvd bits and other control
71          * bits.  Reconstruct and compare the fields as a 16-bit values before
72          * correcting the byte values.
73          */
74         if (sp->cls1.classValid) {
75                 hsp_value = (hsp->cls1.rcvDataSizeMsb << 8) |
76                                 hsp->cls1.rcvDataSizeLsb;
77                 ssp_value = (sp->cls1.rcvDataSizeMsb << 8) |
78                                 sp->cls1.rcvDataSizeLsb;
79                 if (!ssp_value)
80                         goto bad_service_param;
81                 if (ssp_value > hsp_value) {
82                         sp->cls1.rcvDataSizeLsb = hsp->cls1.rcvDataSizeLsb;
83                         sp->cls1.rcvDataSizeMsb = hsp->cls1.rcvDataSizeMsb;
84                 }
85         } else if (class == CLASS1) {
86                 goto bad_service_param;
87         }
88
89         if (sp->cls2.classValid) {
90                 hsp_value = (hsp->cls2.rcvDataSizeMsb << 8) |
91                                 hsp->cls2.rcvDataSizeLsb;
92                 ssp_value = (sp->cls2.rcvDataSizeMsb << 8) |
93                                 sp->cls2.rcvDataSizeLsb;
94                 if (!ssp_value)
95                         goto bad_service_param;
96                 if (ssp_value > hsp_value) {
97                         sp->cls2.rcvDataSizeLsb = hsp->cls2.rcvDataSizeLsb;
98                         sp->cls2.rcvDataSizeMsb = hsp->cls2.rcvDataSizeMsb;
99                 }
100         } else if (class == CLASS2) {
101                 goto bad_service_param;
102         }
103
104         if (sp->cls3.classValid) {
105                 hsp_value = (hsp->cls3.rcvDataSizeMsb << 8) |
106                                 hsp->cls3.rcvDataSizeLsb;
107                 ssp_value = (sp->cls3.rcvDataSizeMsb << 8) |
108                                 sp->cls3.rcvDataSizeLsb;
109                 if (!ssp_value)
110                         goto bad_service_param;
111                 if (ssp_value > hsp_value) {
112                         sp->cls3.rcvDataSizeLsb = hsp->cls3.rcvDataSizeLsb;
113                         sp->cls3.rcvDataSizeMsb = hsp->cls3.rcvDataSizeMsb;
114                 }
115         } else if (class == CLASS3) {
116                 goto bad_service_param;
117         }
118
119         /*
120          * Preserve the upper four bits of the MSB from the PLOGI response.
121          * These bits contain the Buffer-to-Buffer State Change Number
122          * from the target and need to be passed to the FW.
123          */
124         hsp_value = (hsp->cmn.bbRcvSizeMsb << 8) | hsp->cmn.bbRcvSizeLsb;
125         ssp_value = (sp->cmn.bbRcvSizeMsb << 8) | sp->cmn.bbRcvSizeLsb;
126         if (ssp_value > hsp_value) {
127                 sp->cmn.bbRcvSizeLsb = hsp->cmn.bbRcvSizeLsb;
128                 sp->cmn.bbRcvSizeMsb = (sp->cmn.bbRcvSizeMsb & 0xF0) |
129                                        (hsp->cmn.bbRcvSizeMsb & 0x0F);
130         }
131
132         memcpy(&ndlp->nlp_nodename, &sp->nodeName, sizeof (struct lpfc_name));
133         memcpy(&ndlp->nlp_portname, &sp->portName, sizeof (struct lpfc_name));
134         return 1;
135 bad_service_param:
136         lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
137                          "0207 Device %x "
138                          "(%02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x) sent "
139                          "invalid service parameters.  Ignoring device.\n",
140                          ndlp->nlp_DID,
141                          sp->nodeName.u.wwn[0], sp->nodeName.u.wwn[1],
142                          sp->nodeName.u.wwn[2], sp->nodeName.u.wwn[3],
143                          sp->nodeName.u.wwn[4], sp->nodeName.u.wwn[5],
144                          sp->nodeName.u.wwn[6], sp->nodeName.u.wwn[7]);
145         return 0;
146 }
147
148 static void *
149 lpfc_check_elscmpl_iocb(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
150                         struct lpfc_iocbq *rspiocb)
151 {
152         struct lpfc_dmabuf *pcmd, *prsp;
153         uint32_t *lp;
154         void     *ptr = NULL;
155         IOCB_t   *irsp;
156
157         irsp = &rspiocb->iocb;
158         pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
159
160         /* For lpfc_els_abort, context2 could be zero'ed to delay
161          * freeing associated memory till after ABTS completes.
162          */
163         if (pcmd) {
164                 prsp =  list_get_first(&pcmd->list, struct lpfc_dmabuf,
165                                        list);
166                 if (prsp) {
167                         lp = (uint32_t *) prsp->virt;
168                         ptr = (void *)((uint8_t *)lp + sizeof(uint32_t));
169                 }
170         } else {
171                 /* Force ulpStatus error since we are returning NULL ptr */
172                 if (!(irsp->ulpStatus)) {
173                         irsp->ulpStatus = IOSTAT_LOCAL_REJECT;
174                         irsp->un.ulpWord[4] = IOERR_SLI_ABORTED;
175                 }
176                 ptr = NULL;
177         }
178         return ptr;
179 }
180
181
182 /*
183  * Free resources / clean up outstanding I/Os
184  * associated with a LPFC_NODELIST entry. This
185  * routine effectively results in a "software abort".
186  */
187 int
188 lpfc_els_abort(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
189 {
190         LIST_HEAD(completions);
191         struct lpfc_sli  *psli = &phba->sli;
192         struct lpfc_sli_ring *pring = &psli->ring[LPFC_ELS_RING];
193         struct lpfc_iocbq *iocb, *next_iocb;
194         IOCB_t *cmd;
195
196         /* Abort outstanding I/O on NPort <nlp_DID> */
197         lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_DISCOVERY,
198                          "0205 Abort outstanding I/O on NPort x%x "
199                          "Data: x%x x%x x%x\n",
200                          ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
201                          ndlp->nlp_rpi);
202
203         lpfc_fabric_abort_nport(ndlp);
204
205         /* First check the txq */
206         spin_lock_irq(&phba->hbalock);
207         list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) {
208                 /* Check to see if iocb matches the nport we are looking for */
209                 if (lpfc_check_sli_ndlp(phba, pring, iocb, ndlp)) {
210                         /* It matches, so deque and call compl with anp error */
211                         list_move_tail(&iocb->list, &completions);
212                         pring->txq_cnt--;
213                 }
214         }
215
216         /* Next check the txcmplq */
217         list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq, 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                         lpfc_sli_issue_abort_iotag(phba, pring, iocb);
221                 }
222         }
223         spin_unlock_irq(&phba->hbalock);
224
225         while (!list_empty(&completions)) {
226                 iocb = list_get_first(&completions, struct lpfc_iocbq, list);
227                 cmd = &iocb->iocb;
228                 list_del_init(&iocb->list);
229
230                 if (!iocb->iocb_cmpl)
231                         lpfc_sli_release_iocbq(phba, iocb);
232                 else {
233                         cmd->ulpStatus = IOSTAT_LOCAL_REJECT;
234                         cmd->un.ulpWord[4] = IOERR_SLI_ABORTED;
235                         (iocb->iocb_cmpl) (phba, iocb, iocb);
236                 }
237         }
238
239         /* If we are delaying issuing an ELS command, cancel it */
240         if (ndlp->nlp_flag & NLP_DELAY_TMO)
241                 lpfc_cancel_retry_delay_tmo(phba->pport, ndlp);
242         return 0;
243 }
244
245 static int
246 lpfc_rcv_plogi(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
247                struct lpfc_iocbq *cmdiocb)
248 {
249         struct Scsi_Host   *shost = lpfc_shost_from_vport(vport);
250         struct lpfc_hba    *phba = vport->phba;
251         struct lpfc_dmabuf *pcmd;
252         struct lpfc_work_evt *evtp;
253         uint32_t *lp;
254         IOCB_t *icmd;
255         struct serv_parm *sp;
256         LPFC_MBOXQ_t *mbox;
257         struct ls_rjt stat;
258         int rc;
259
260         memset(&stat, 0, sizeof (struct ls_rjt));
261         if (vport->port_state <= LPFC_FLOGI) {
262                 /* Before responding to PLOGI, check for pt2pt mode.
263                  * If we are pt2pt, with an outstanding FLOGI, abort
264                  * the FLOGI and resend it first.
265                  */
266                 if (vport->fc_flag & FC_PT2PT) {
267                          lpfc_els_abort_flogi(phba);
268                         if (!(vport->fc_flag & FC_PT2PT_PLOGI)) {
269                                 /* If the other side is supposed to initiate
270                                  * the PLOGI anyway, just ACC it now and
271                                  * move on with discovery.
272                                  */
273                                 phba->fc_edtov = FF_DEF_EDTOV;
274                                 phba->fc_ratov = FF_DEF_RATOV;
275                                 /* Start discovery - this should just do
276                                    CLEAR_LA */
277                                 lpfc_disc_start(vport);
278                         } else
279                                 lpfc_initial_flogi(vport);
280                 } else {
281                         stat.un.b.lsRjtRsnCode = LSRJT_LOGICAL_BSY;
282                         stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
283                         lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb,
284                                             ndlp, NULL);
285                         return 0;
286                 }
287         }
288         pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
289         lp = (uint32_t *) pcmd->virt;
290         sp = (struct serv_parm *) ((uint8_t *) lp + sizeof (uint32_t));
291         if (wwn_to_u64(sp->portName.u.wwn) == 0) {
292                 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
293                                  "0140 PLOGI Reject: invalid nname\n");
294                 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
295                 stat.un.b.lsRjtRsnCodeExp = LSEXP_INVALID_PNAME;
296                 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
297                         NULL);
298                 return 0;
299         }
300         if (wwn_to_u64(sp->nodeName.u.wwn) == 0) {
301                 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
302                                  "0141 PLOGI Reject: invalid pname\n");
303                 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
304                 stat.un.b.lsRjtRsnCodeExp = LSEXP_INVALID_NNAME;
305                 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
306                         NULL);
307                 return 0;
308         }
309         if ((lpfc_check_sparm(vport, ndlp, sp, CLASS3) == 0)) {
310                 /* Reject this request because invalid parameters */
311                 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
312                 stat.un.b.lsRjtRsnCodeExp = LSEXP_SPARM_OPTIONS;
313                 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
314                         NULL);
315                 return 0;
316         }
317         icmd = &cmdiocb->iocb;
318
319         /* PLOGI chkparm OK */
320         lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
321                          "0114 PLOGI chkparm OK Data: x%x x%x x%x x%x\n",
322                          ndlp->nlp_DID, ndlp->nlp_state, ndlp->nlp_flag,
323                          ndlp->nlp_rpi);
324
325         if (vport->cfg_fcp_class == 2 && sp->cls2.classValid)
326                 ndlp->nlp_fcp_info |= CLASS2;
327         else
328                 ndlp->nlp_fcp_info |= CLASS3;
329
330         ndlp->nlp_class_sup = 0;
331         if (sp->cls1.classValid)
332                 ndlp->nlp_class_sup |= FC_COS_CLASS1;
333         if (sp->cls2.classValid)
334                 ndlp->nlp_class_sup |= FC_COS_CLASS2;
335         if (sp->cls3.classValid)
336                 ndlp->nlp_class_sup |= FC_COS_CLASS3;
337         if (sp->cls4.classValid)
338                 ndlp->nlp_class_sup |= FC_COS_CLASS4;
339         ndlp->nlp_maxframe =
340                 ((sp->cmn.bbRcvSizeMsb & 0x0F) << 8) | sp->cmn.bbRcvSizeLsb;
341
342         /* no need to reg_login if we are already in one of these states */
343         switch (ndlp->nlp_state) {
344         case  NLP_STE_NPR_NODE:
345                 if (!(ndlp->nlp_flag & NLP_NPR_ADISC))
346                         break;
347         case  NLP_STE_REG_LOGIN_ISSUE:
348         case  NLP_STE_PRLI_ISSUE:
349         case  NLP_STE_UNMAPPED_NODE:
350         case  NLP_STE_MAPPED_NODE:
351                 lpfc_els_rsp_acc(vport, ELS_CMD_PLOGI, cmdiocb, ndlp, NULL);
352                 return 1;
353         }
354
355         if ((vport->fc_flag & FC_PT2PT) &&
356             !(vport->fc_flag & FC_PT2PT_PLOGI)) {
357                 /* rcv'ed PLOGI decides what our NPortId will be */
358                 vport->fc_myDID = icmd->un.rcvels.parmRo;
359                 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
360                 if (mbox == NULL)
361                         goto out;
362                 lpfc_config_link(phba, mbox);
363                 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
364                 mbox->vport = vport;
365                 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
366                 if (rc == MBX_NOT_FINISHED) {
367                         mempool_free(mbox, phba->mbox_mem_pool);
368                         goto out;
369                 }
370
371                 lpfc_can_disctmo(vport);
372         }
373         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
374         if (!mbox)
375                 goto out;
376
377         rc = lpfc_reg_login(phba, vport->vpi, icmd->un.rcvels.remoteID,
378                             (uint8_t *) sp, mbox, 0);
379         if (rc) {
380                 mempool_free(mbox, phba->mbox_mem_pool);
381                 goto out;
382         }
383
384         /* ACC PLOGI rsp command needs to execute first,
385          * queue this mbox command to be processed later.
386          */
387         mbox->mbox_cmpl = lpfc_mbx_cmpl_reg_login;
388         /*
389          * mbox->context2 = lpfc_nlp_get(ndlp) deferred until mailbox
390          * command issued in lpfc_cmpl_els_acc().
391          */
392         mbox->vport = vport;
393         spin_lock_irq(shost->host_lock);
394         ndlp->nlp_flag |= (NLP_ACC_REGLOGIN | NLP_RCV_PLOGI);
395         spin_unlock_irq(shost->host_lock);
396
397         /*
398          * If there is an outstanding PLOGI issued, abort it before
399          * sending ACC rsp for received PLOGI. If pending plogi
400          * is not canceled here, the plogi will be rejected by
401          * remote port and will be retried. On a configuration with
402          * single discovery thread, this will cause a huge delay in
403          * discovery. Also this will cause multiple state machines
404          * running in parallel for this node.
405          */
406         if (ndlp->nlp_state == NLP_STE_PLOGI_ISSUE) {
407                 /* software abort outstanding PLOGI */
408                 lpfc_els_abort(phba, ndlp);
409         }
410
411         if ((vport->port_type == LPFC_NPIV_PORT &&
412              vport->cfg_restrict_login)) {
413
414                 /* In order to preserve RPIs, we want to cleanup
415                  * the default RPI the firmware created to rcv
416                  * this ELS request. The only way to do this is
417                  * to register, then unregister the RPI.
418                  */
419                 spin_lock_irq(shost->host_lock);
420                 ndlp->nlp_flag |= NLP_RM_DFLT_RPI;
421                 spin_unlock_irq(shost->host_lock);
422                 stat.un.b.lsRjtRsnCode = LSRJT_INVALID_CMD;
423                 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
424                 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb,
425                         ndlp, mbox);
426                 return 1;
427         }
428
429         /* If the remote NPort logs into us, before we can initiate
430          * discovery to them, cleanup the NPort from discovery accordingly.
431          */
432         if (ndlp->nlp_state == NLP_STE_NPR_NODE) {
433                 spin_lock_irq(shost->host_lock);
434                 ndlp->nlp_flag &= ~NLP_DELAY_TMO;
435                 spin_unlock_irq(shost->host_lock);
436                 del_timer_sync(&ndlp->nlp_delayfunc);
437                 ndlp->nlp_last_elscmd = 0;
438
439                 if (!list_empty(&ndlp->els_retry_evt.evt_listp)) {
440                         list_del_init(&ndlp->els_retry_evt.evt_listp);
441                         /* Decrement ndlp reference count held for the
442                          * delayed retry
443                          */
444                         evtp = &ndlp->els_retry_evt;
445                         lpfc_nlp_put((struct lpfc_nodelist *)evtp->evt_arg1);
446                 }
447
448                 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
449                         spin_lock_irq(shost->host_lock);
450                         ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
451                         spin_unlock_irq(shost->host_lock);
452
453                         if ((ndlp->nlp_flag & NLP_ADISC_SND) &&
454                                 (vport->num_disc_nodes)) {
455                                 /* Check to see if there are more
456                                  * ADISCs to be sent
457                                  */
458                                 lpfc_more_adisc(vport);
459
460                                 if ((vport->num_disc_nodes == 0) &&
461                                         (vport->fc_npr_cnt))
462                                         lpfc_els_disc_plogi(vport);
463
464                                 if (vport->num_disc_nodes == 0) {
465                                         spin_lock_irq(shost->host_lock);
466                                         vport->fc_flag &= ~FC_NDISC_ACTIVE;
467                                         spin_unlock_irq(shost->host_lock);
468                                         lpfc_can_disctmo(vport);
469                                         lpfc_end_rscn(vport);
470                                 }
471                         }
472                         else if (vport->num_disc_nodes) {
473                                 /* Check to see if there are more
474                                  * PLOGIs to be sent
475                                  */
476                                 lpfc_more_plogi(vport);
477
478                                 if (vport->num_disc_nodes == 0) {
479                                         spin_lock_irq(shost->host_lock);
480                                         vport->fc_flag &= ~FC_NDISC_ACTIVE;
481                                         spin_unlock_irq(shost->host_lock);
482                                         lpfc_can_disctmo(vport);
483                                         lpfc_end_rscn(vport);
484                                 }
485                         }
486                 }
487         }
488
489         lpfc_els_rsp_acc(vport, ELS_CMD_PLOGI, cmdiocb, ndlp, mbox);
490         return 1;
491
492 out:
493         stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
494         stat.un.b.lsRjtRsnCodeExp = LSEXP_OUT_OF_RESOURCE;
495         lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
496         return 0;
497 }
498
499 static int
500 lpfc_rcv_padisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
501                 struct lpfc_iocbq *cmdiocb)
502 {
503         struct Scsi_Host   *shost = lpfc_shost_from_vport(vport);
504         struct lpfc_dmabuf *pcmd;
505         struct serv_parm   *sp;
506         struct lpfc_name   *pnn, *ppn;
507         struct ls_rjt stat;
508         ADISC *ap;
509         IOCB_t *icmd;
510         uint32_t *lp;
511         uint32_t cmd;
512
513         pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
514         lp = (uint32_t *) pcmd->virt;
515
516         cmd = *lp++;
517         if (cmd == ELS_CMD_ADISC) {
518                 ap = (ADISC *) lp;
519                 pnn = (struct lpfc_name *) & ap->nodeName;
520                 ppn = (struct lpfc_name *) & ap->portName;
521         } else {
522                 sp = (struct serv_parm *) lp;
523                 pnn = (struct lpfc_name *) & sp->nodeName;
524                 ppn = (struct lpfc_name *) & sp->portName;
525         }
526
527         icmd = &cmdiocb->iocb;
528         if (icmd->ulpStatus == 0 && lpfc_check_adisc(vport, ndlp, pnn, ppn)) {
529                 if (cmd == ELS_CMD_ADISC) {
530                         lpfc_els_rsp_adisc_acc(vport, cmdiocb, ndlp);
531                 } else {
532                         lpfc_els_rsp_acc(vport, ELS_CMD_PLOGI, cmdiocb, ndlp,
533                                          NULL);
534                 }
535                 return 1;
536         }
537         /* Reject this request because invalid parameters */
538         stat.un.b.lsRjtRsvd0 = 0;
539         stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
540         stat.un.b.lsRjtRsnCodeExp = LSEXP_SPARM_OPTIONS;
541         stat.un.b.vendorUnique = 0;
542         lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
543
544         /* 1 sec timeout */
545         mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ);
546
547         spin_lock_irq(shost->host_lock);
548         ndlp->nlp_flag |= NLP_DELAY_TMO;
549         spin_unlock_irq(shost->host_lock);
550         ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
551         ndlp->nlp_prev_state = ndlp->nlp_state;
552         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
553         return 0;
554 }
555
556 static int
557 lpfc_rcv_logo(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
558               struct lpfc_iocbq *cmdiocb, uint32_t els_cmd)
559 {
560         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
561
562         /* Put ndlp in NPR state with 1 sec timeout for plogi, ACC logo */
563         /* Only call LOGO ACC for first LOGO, this avoids sending unnecessary
564          * PLOGIs during LOGO storms from a device.
565          */
566         spin_lock_irq(shost->host_lock);
567         ndlp->nlp_flag |= NLP_LOGO_ACC;
568         spin_unlock_irq(shost->host_lock);
569         if (els_cmd == ELS_CMD_PRLO)
570                 lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
571         else
572                 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
573
574         if (!(ndlp->nlp_type & NLP_FABRIC) ||
575             (ndlp->nlp_state == NLP_STE_ADISC_ISSUE)) {
576                 /* Only try to re-login if this is NOT a Fabric Node */
577                 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ * 1);
578                 spin_lock_irq(shost->host_lock);
579                 ndlp->nlp_flag |= NLP_DELAY_TMO;
580                 spin_unlock_irq(shost->host_lock);
581
582                 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
583         }
584         ndlp->nlp_prev_state = ndlp->nlp_state;
585         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
586
587         spin_lock_irq(shost->host_lock);
588         ndlp->nlp_flag &= ~NLP_NPR_ADISC;
589         spin_unlock_irq(shost->host_lock);
590         /* The driver has to wait until the ACC completes before it continues
591          * processing the LOGO.  The action will resume in
592          * lpfc_cmpl_els_logo_acc routine. Since part of processing includes an
593          * unreg_login, the driver waits so the ACC does not get aborted.
594          */
595         return 0;
596 }
597
598 static void
599 lpfc_rcv_prli(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
600               struct lpfc_iocbq *cmdiocb)
601 {
602         struct lpfc_dmabuf *pcmd;
603         uint32_t *lp;
604         PRLI *npr;
605         struct fc_rport *rport = ndlp->rport;
606         u32 roles;
607
608         pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
609         lp = (uint32_t *) pcmd->virt;
610         npr = (PRLI *) ((uint8_t *) lp + sizeof (uint32_t));
611
612         ndlp->nlp_type &= ~(NLP_FCP_TARGET | NLP_FCP_INITIATOR);
613         ndlp->nlp_fcp_info &= ~NLP_FCP_2_DEVICE;
614         if (npr->prliType == PRLI_FCP_TYPE) {
615                 if (npr->initiatorFunc)
616                         ndlp->nlp_type |= NLP_FCP_INITIATOR;
617                 if (npr->targetFunc)
618                         ndlp->nlp_type |= NLP_FCP_TARGET;
619                 if (npr->Retry)
620                         ndlp->nlp_fcp_info |= NLP_FCP_2_DEVICE;
621         }
622         if (rport) {
623                 /* We need to update the rport role values */
624                 roles = FC_RPORT_ROLE_UNKNOWN;
625                 if (ndlp->nlp_type & NLP_FCP_INITIATOR)
626                         roles |= FC_RPORT_ROLE_FCP_INITIATOR;
627                 if (ndlp->nlp_type & NLP_FCP_TARGET)
628                         roles |= FC_RPORT_ROLE_FCP_TARGET;
629
630                 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
631                         "rport rolechg:   role:x%x did:x%x flg:x%x",
632                         roles, ndlp->nlp_DID, ndlp->nlp_flag);
633
634                 fc_remote_port_rolechg(rport, roles);
635         }
636 }
637
638 static uint32_t
639 lpfc_disc_set_adisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
640 {
641         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
642
643         if (!ndlp->nlp_rpi) {
644                 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
645                 return 0;
646         }
647
648         if (!(vport->fc_flag & FC_PT2PT)) {
649                 /* Check config parameter use-adisc or FCP-2 */
650                 if ((vport->cfg_use_adisc && (vport->fc_flag & FC_RSCN_MODE)) ||
651                     ndlp->nlp_fcp_info & NLP_FCP_2_DEVICE) {
652                         spin_lock_irq(shost->host_lock);
653                         ndlp->nlp_flag |= NLP_NPR_ADISC;
654                         spin_unlock_irq(shost->host_lock);
655                         return 1;
656                 }
657         }
658         ndlp->nlp_flag &= ~NLP_NPR_ADISC;
659         lpfc_unreg_rpi(vport, ndlp);
660         return 0;
661 }
662
663 static uint32_t
664 lpfc_disc_illegal(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
665                   void *arg, uint32_t evt)
666 {
667         lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
668                          "0271 Illegal State Transition: node x%x "
669                          "event x%x, state x%x Data: x%x x%x\n",
670                          ndlp->nlp_DID, evt, ndlp->nlp_state, ndlp->nlp_rpi,
671                          ndlp->nlp_flag);
672         return ndlp->nlp_state;
673 }
674
675 static uint32_t
676 lpfc_cmpl_plogi_illegal(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
677                   void *arg, uint32_t evt)
678 {
679         /* This transition is only legal if we previously
680          * rcv'ed a PLOGI. Since we don't want 2 discovery threads
681          * working on the same NPortID, do nothing for this thread
682          * to stop it.
683          */
684         if (!(ndlp->nlp_flag & NLP_RCV_PLOGI)) {
685                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
686                          "0272 Illegal State Transition: node x%x "
687                          "event x%x, state x%x Data: x%x x%x\n",
688                          ndlp->nlp_DID, evt, ndlp->nlp_state, ndlp->nlp_rpi,
689                          ndlp->nlp_flag);
690         }
691         return ndlp->nlp_state;
692 }
693
694 /* Start of Discovery State Machine routines */
695
696 static uint32_t
697 lpfc_rcv_plogi_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
698                            void *arg, uint32_t evt)
699 {
700         struct lpfc_iocbq *cmdiocb;
701
702         cmdiocb = (struct lpfc_iocbq *) arg;
703
704         if (lpfc_rcv_plogi(vport, ndlp, cmdiocb)) {
705                 return ndlp->nlp_state;
706         }
707         return NLP_STE_FREED_NODE;
708 }
709
710 static uint32_t
711 lpfc_rcv_els_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
712                          void *arg, uint32_t evt)
713 {
714         lpfc_issue_els_logo(vport, ndlp, 0);
715         return ndlp->nlp_state;
716 }
717
718 static uint32_t
719 lpfc_rcv_logo_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
720                           void *arg, uint32_t evt)
721 {
722         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
723         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
724
725         spin_lock_irq(shost->host_lock);
726         ndlp->nlp_flag |= NLP_LOGO_ACC;
727         spin_unlock_irq(shost->host_lock);
728         lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
729
730         return ndlp->nlp_state;
731 }
732
733 static uint32_t
734 lpfc_cmpl_logo_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
735                            void *arg, uint32_t evt)
736 {
737         return NLP_STE_FREED_NODE;
738 }
739
740 static uint32_t
741 lpfc_device_rm_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
742                            void *arg, uint32_t evt)
743 {
744         return NLP_STE_FREED_NODE;
745 }
746
747 static uint32_t
748 lpfc_rcv_plogi_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
749                            void *arg, uint32_t evt)
750 {
751         struct lpfc_hba   *phba = vport->phba;
752         struct lpfc_iocbq *cmdiocb = arg;
753         struct lpfc_dmabuf *pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
754         uint32_t *lp = (uint32_t *) pcmd->virt;
755         struct serv_parm *sp = (struct serv_parm *) (lp + 1);
756         struct ls_rjt stat;
757         int port_cmp;
758
759         memset(&stat, 0, sizeof (struct ls_rjt));
760
761         /* For a PLOGI, we only accept if our portname is less
762          * than the remote portname.
763          */
764         phba->fc_stat.elsLogiCol++;
765         port_cmp = memcmp(&vport->fc_portname, &sp->portName,
766                           sizeof(struct lpfc_name));
767
768         if (port_cmp >= 0) {
769                 /* Reject this request because the remote node will accept
770                    ours */
771                 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
772                 stat.un.b.lsRjtRsnCodeExp = LSEXP_CMD_IN_PROGRESS;
773                 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
774                         NULL);
775         } else {
776                 lpfc_rcv_plogi(vport, ndlp, cmdiocb);
777         } /* If our portname was less */
778
779         return ndlp->nlp_state;
780 }
781
782 static uint32_t
783 lpfc_rcv_prli_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
784                           void *arg, uint32_t evt)
785 {
786         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
787         struct ls_rjt     stat;
788
789         memset(&stat, 0, sizeof (struct ls_rjt));
790         stat.un.b.lsRjtRsnCode = LSRJT_LOGICAL_BSY;
791         stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
792         lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
793         return ndlp->nlp_state;
794 }
795
796 static uint32_t
797 lpfc_rcv_logo_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
798                           void *arg, uint32_t evt)
799 {
800         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
801
802                                 /* software abort outstanding PLOGI */
803         lpfc_els_abort(vport->phba, ndlp);
804
805         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
806         return ndlp->nlp_state;
807 }
808
809 static uint32_t
810 lpfc_rcv_els_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
811                          void *arg, uint32_t evt)
812 {
813         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
814         struct lpfc_hba   *phba = vport->phba;
815         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
816
817         /* software abort outstanding PLOGI */
818         lpfc_els_abort(phba, ndlp);
819
820         if (evt == NLP_EVT_RCV_LOGO) {
821                 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
822         } else {
823                 lpfc_issue_els_logo(vport, ndlp, 0);
824         }
825
826         /* Put ndlp in npr state set plogi timer for 1 sec */
827         mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ * 1);
828         spin_lock_irq(shost->host_lock);
829         ndlp->nlp_flag |= NLP_DELAY_TMO;
830         spin_unlock_irq(shost->host_lock);
831         ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
832         ndlp->nlp_prev_state = NLP_STE_PLOGI_ISSUE;
833         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
834
835         return ndlp->nlp_state;
836 }
837
838 static uint32_t
839 lpfc_cmpl_plogi_plogi_issue(struct lpfc_vport *vport,
840                             struct lpfc_nodelist *ndlp,
841                             void *arg,
842                             uint32_t evt)
843 {
844         struct lpfc_hba    *phba = vport->phba;
845         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
846         struct lpfc_iocbq  *cmdiocb, *rspiocb;
847         struct lpfc_dmabuf *pcmd, *prsp, *mp;
848         uint32_t *lp;
849         IOCB_t *irsp;
850         struct serv_parm *sp;
851         LPFC_MBOXQ_t *mbox;
852
853         cmdiocb = (struct lpfc_iocbq *) arg;
854         rspiocb = cmdiocb->context_un.rsp_iocb;
855
856         if (ndlp->nlp_flag & NLP_ACC_REGLOGIN) {
857                 /* Recovery from PLOGI collision logic */
858                 return ndlp->nlp_state;
859         }
860
861         irsp = &rspiocb->iocb;
862
863         if (irsp->ulpStatus)
864                 goto out;
865
866         pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
867
868         prsp = list_get_first(&pcmd->list, struct lpfc_dmabuf, list);
869
870         lp = (uint32_t *) prsp->virt;
871         sp = (struct serv_parm *) ((uint8_t *) lp + sizeof (uint32_t));
872         if (wwn_to_u64(sp->portName.u.wwn) == 0 ||
873             wwn_to_u64(sp->nodeName.u.wwn) == 0) {
874                 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
875                                  "0142 PLOGI RSP: Invalid WWN.\n");
876                 goto out;
877         }
878         if (!lpfc_check_sparm(vport, ndlp, sp, CLASS3))
879                 goto out;
880         /* PLOGI chkparm OK */
881         lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
882                          "0121 PLOGI chkparm OK Data: x%x x%x x%x x%x\n",
883                          ndlp->nlp_DID, ndlp->nlp_state,
884                          ndlp->nlp_flag, ndlp->nlp_rpi);
885         if (vport->cfg_fcp_class == 2 && (sp->cls2.classValid))
886                 ndlp->nlp_fcp_info |= CLASS2;
887         else
888                 ndlp->nlp_fcp_info |= CLASS3;
889
890         ndlp->nlp_class_sup = 0;
891         if (sp->cls1.classValid)
892                 ndlp->nlp_class_sup |= FC_COS_CLASS1;
893         if (sp->cls2.classValid)
894                 ndlp->nlp_class_sup |= FC_COS_CLASS2;
895         if (sp->cls3.classValid)
896                 ndlp->nlp_class_sup |= FC_COS_CLASS3;
897         if (sp->cls4.classValid)
898                 ndlp->nlp_class_sup |= FC_COS_CLASS4;
899         ndlp->nlp_maxframe =
900                 ((sp->cmn.bbRcvSizeMsb & 0x0F) << 8) | sp->cmn.bbRcvSizeLsb;
901
902         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
903         if (!mbox) {
904                 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
905                         "0133 PLOGI: no memory for reg_login "
906                         "Data: x%x x%x x%x x%x\n",
907                         ndlp->nlp_DID, ndlp->nlp_state,
908                         ndlp->nlp_flag, ndlp->nlp_rpi);
909                 goto out;
910         }
911
912         lpfc_unreg_rpi(vport, ndlp);
913
914         if (lpfc_reg_login(phba, vport->vpi, irsp->un.elsreq64.remoteID,
915                            (uint8_t *) sp, mbox, 0) == 0) {
916                 switch (ndlp->nlp_DID) {
917                 case NameServer_DID:
918                         mbox->mbox_cmpl = lpfc_mbx_cmpl_ns_reg_login;
919                         break;
920                 case FDMI_DID:
921                         mbox->mbox_cmpl = lpfc_mbx_cmpl_fdmi_reg_login;
922                         break;
923                 default:
924                         mbox->mbox_cmpl = lpfc_mbx_cmpl_reg_login;
925                 }
926                 mbox->context2 = lpfc_nlp_get(ndlp);
927                 mbox->vport = vport;
928                 if (lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT)
929                     != MBX_NOT_FINISHED) {
930                         lpfc_nlp_set_state(vport, ndlp,
931                                            NLP_STE_REG_LOGIN_ISSUE);
932                         return ndlp->nlp_state;
933                 }
934                 /* decrement node reference count to the failed mbox
935                  * command
936                  */
937                 lpfc_nlp_put(ndlp);
938                 mp = (struct lpfc_dmabuf *) mbox->context1;
939                 lpfc_mbuf_free(phba, mp->virt, mp->phys);
940                 kfree(mp);
941                 mempool_free(mbox, phba->mbox_mem_pool);
942
943                 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
944                                  "0134 PLOGI: cannot issue reg_login "
945                                  "Data: x%x x%x x%x x%x\n",
946                                  ndlp->nlp_DID, ndlp->nlp_state,
947                                  ndlp->nlp_flag, ndlp->nlp_rpi);
948         } else {
949                 mempool_free(mbox, phba->mbox_mem_pool);
950
951                 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
952                                  "0135 PLOGI: cannot format reg_login "
953                                  "Data: x%x x%x x%x x%x\n",
954                                  ndlp->nlp_DID, ndlp->nlp_state,
955                                  ndlp->nlp_flag, ndlp->nlp_rpi);
956         }
957
958
959 out:
960         if (ndlp->nlp_DID == NameServer_DID) {
961                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
962                 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
963                                  "0261 Cannot Register NameServer login\n");
964         }
965
966         spin_lock_irq(shost->host_lock);
967         ndlp->nlp_flag |= NLP_DEFER_RM;
968         spin_unlock_irq(shost->host_lock);
969         return NLP_STE_FREED_NODE;
970 }
971
972 static uint32_t
973 lpfc_cmpl_logo_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
974                            void *arg, uint32_t evt)
975 {
976         return ndlp->nlp_state;
977 }
978
979 static uint32_t
980 lpfc_cmpl_reglogin_plogi_issue(struct lpfc_vport *vport,
981         struct lpfc_nodelist *ndlp, void *arg, uint32_t evt)
982 {
983         return ndlp->nlp_state;
984 }
985
986 static uint32_t
987 lpfc_device_rm_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
988                            void *arg, uint32_t evt)
989 {
990         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
991
992         if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
993                 spin_lock_irq(shost->host_lock);
994                 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
995                 spin_unlock_irq(shost->host_lock);
996                 return ndlp->nlp_state;
997         } else {
998                 /* software abort outstanding PLOGI */
999                 lpfc_els_abort(vport->phba, ndlp);
1000
1001                 lpfc_drop_node(vport, ndlp);
1002                 return NLP_STE_FREED_NODE;
1003         }
1004 }
1005
1006 static uint32_t
1007 lpfc_device_recov_plogi_issue(struct lpfc_vport *vport,
1008                               struct lpfc_nodelist *ndlp,
1009                               void *arg,
1010                               uint32_t evt)
1011 {
1012         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1013         struct lpfc_hba  *phba = vport->phba;
1014
1015         /* Don't do anything that will mess up processing of the
1016          * previous RSCN.
1017          */
1018         if (vport->fc_flag & FC_RSCN_DEFERRED)
1019                 return ndlp->nlp_state;
1020
1021         /* software abort outstanding PLOGI */
1022         lpfc_els_abort(phba, ndlp);
1023
1024         ndlp->nlp_prev_state = NLP_STE_PLOGI_ISSUE;
1025         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1026         spin_lock_irq(shost->host_lock);
1027         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1028         spin_unlock_irq(shost->host_lock);
1029
1030         return ndlp->nlp_state;
1031 }
1032
1033 static uint32_t
1034 lpfc_rcv_plogi_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1035                            void *arg, uint32_t evt)
1036 {
1037         struct lpfc_hba   *phba = vport->phba;
1038         struct lpfc_iocbq *cmdiocb;
1039
1040         /* software abort outstanding ADISC */
1041         lpfc_els_abort(phba, ndlp);
1042
1043         cmdiocb = (struct lpfc_iocbq *) arg;
1044
1045         if (lpfc_rcv_plogi(vport, ndlp, cmdiocb))
1046                 return ndlp->nlp_state;
1047
1048         ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1049         lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
1050         lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
1051
1052         return ndlp->nlp_state;
1053 }
1054
1055 static uint32_t
1056 lpfc_rcv_prli_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1057                           void *arg, uint32_t evt)
1058 {
1059         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1060
1061         lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1062         return ndlp->nlp_state;
1063 }
1064
1065 static uint32_t
1066 lpfc_rcv_logo_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1067                           void *arg, uint32_t evt)
1068 {
1069         struct lpfc_hba *phba = vport->phba;
1070         struct lpfc_iocbq *cmdiocb;
1071
1072         cmdiocb = (struct lpfc_iocbq *) arg;
1073
1074         /* software abort outstanding ADISC */
1075         lpfc_els_abort(phba, ndlp);
1076
1077         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1078         return ndlp->nlp_state;
1079 }
1080
1081 static uint32_t
1082 lpfc_rcv_padisc_adisc_issue(struct lpfc_vport *vport,
1083                             struct lpfc_nodelist *ndlp,
1084                             void *arg, uint32_t evt)
1085 {
1086         struct lpfc_iocbq *cmdiocb;
1087
1088         cmdiocb = (struct lpfc_iocbq *) arg;
1089
1090         lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1091         return ndlp->nlp_state;
1092 }
1093
1094 static uint32_t
1095 lpfc_rcv_prlo_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1096                           void *arg, uint32_t evt)
1097 {
1098         struct lpfc_iocbq *cmdiocb;
1099
1100         cmdiocb = (struct lpfc_iocbq *) arg;
1101
1102         /* Treat like rcv logo */
1103         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_PRLO);
1104         return ndlp->nlp_state;
1105 }
1106
1107 static uint32_t
1108 lpfc_cmpl_adisc_adisc_issue(struct lpfc_vport *vport,
1109                             struct lpfc_nodelist *ndlp,
1110                             void *arg, uint32_t evt)
1111 {
1112         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
1113         struct lpfc_hba   *phba = vport->phba;
1114         struct lpfc_iocbq *cmdiocb, *rspiocb;
1115         IOCB_t *irsp;
1116         ADISC *ap;
1117
1118         cmdiocb = (struct lpfc_iocbq *) arg;
1119         rspiocb = cmdiocb->context_un.rsp_iocb;
1120
1121         ap = (ADISC *)lpfc_check_elscmpl_iocb(phba, cmdiocb, rspiocb);
1122         irsp = &rspiocb->iocb;
1123
1124         if ((irsp->ulpStatus) ||
1125             (!lpfc_check_adisc(vport, ndlp, &ap->nodeName, &ap->portName))) {
1126                 /* 1 sec timeout */
1127                 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ);
1128                 spin_lock_irq(shost->host_lock);
1129                 ndlp->nlp_flag |= NLP_DELAY_TMO;
1130                 spin_unlock_irq(shost->host_lock);
1131                 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
1132
1133                 memset(&ndlp->nlp_nodename, 0, sizeof(struct lpfc_name));
1134                 memset(&ndlp->nlp_portname, 0, sizeof(struct lpfc_name));
1135
1136                 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1137                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1138                 lpfc_unreg_rpi(vport, ndlp);
1139                 return ndlp->nlp_state;
1140         }
1141
1142         if (ndlp->nlp_type & NLP_FCP_TARGET) {
1143                 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1144                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_MAPPED_NODE);
1145         } else {
1146                 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1147                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1148         }
1149         return ndlp->nlp_state;
1150 }
1151
1152 static uint32_t
1153 lpfc_device_rm_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1154                            void *arg, uint32_t evt)
1155 {
1156         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1157
1158         if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1159                 spin_lock_irq(shost->host_lock);
1160                 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1161                 spin_unlock_irq(shost->host_lock);
1162                 return ndlp->nlp_state;
1163         } else {
1164                 /* software abort outstanding ADISC */
1165                 lpfc_els_abort(vport->phba, ndlp);
1166
1167                 lpfc_drop_node(vport, ndlp);
1168                 return NLP_STE_FREED_NODE;
1169         }
1170 }
1171
1172 static uint32_t
1173 lpfc_device_recov_adisc_issue(struct lpfc_vport *vport,
1174                               struct lpfc_nodelist *ndlp,
1175                               void *arg,
1176                               uint32_t evt)
1177 {
1178         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1179         struct lpfc_hba  *phba = vport->phba;
1180
1181         /* Don't do anything that will mess up processing of the
1182          * previous RSCN.
1183          */
1184         if (vport->fc_flag & FC_RSCN_DEFERRED)
1185                 return ndlp->nlp_state;
1186
1187         /* software abort outstanding ADISC */
1188         lpfc_els_abort(phba, ndlp);
1189
1190         ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1191         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1192         spin_lock_irq(shost->host_lock);
1193         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1194         spin_unlock_irq(shost->host_lock);
1195         lpfc_disc_set_adisc(vport, ndlp);
1196         return ndlp->nlp_state;
1197 }
1198
1199 static uint32_t
1200 lpfc_rcv_plogi_reglogin_issue(struct lpfc_vport *vport,
1201                               struct lpfc_nodelist *ndlp,
1202                               void *arg,
1203                               uint32_t evt)
1204 {
1205         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1206
1207         lpfc_rcv_plogi(vport, ndlp, cmdiocb);
1208         return ndlp->nlp_state;
1209 }
1210
1211 static uint32_t
1212 lpfc_rcv_prli_reglogin_issue(struct lpfc_vport *vport,
1213                              struct lpfc_nodelist *ndlp,
1214                              void *arg,
1215                              uint32_t evt)
1216 {
1217         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1218
1219         lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1220         return ndlp->nlp_state;
1221 }
1222
1223 static uint32_t
1224 lpfc_rcv_logo_reglogin_issue(struct lpfc_vport *vport,
1225                              struct lpfc_nodelist *ndlp,
1226                              void *arg,
1227                              uint32_t evt)
1228 {
1229         struct lpfc_hba   *phba = vport->phba;
1230         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1231         LPFC_MBOXQ_t      *mb;
1232         LPFC_MBOXQ_t      *nextmb;
1233         struct lpfc_dmabuf *mp;
1234
1235         cmdiocb = (struct lpfc_iocbq *) arg;
1236
1237         /* cleanup any ndlp on mbox q waiting for reglogin cmpl */
1238         if ((mb = phba->sli.mbox_active)) {
1239                 if ((mb->mb.mbxCommand == MBX_REG_LOGIN64) &&
1240                    (ndlp == (struct lpfc_nodelist *) mb->context2)) {
1241                         lpfc_nlp_put(ndlp);
1242                         mb->context2 = NULL;
1243                         mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
1244                 }
1245         }
1246
1247         spin_lock_irq(&phba->hbalock);
1248         list_for_each_entry_safe(mb, nextmb, &phba->sli.mboxq, list) {
1249                 if ((mb->mb.mbxCommand == MBX_REG_LOGIN64) &&
1250                    (ndlp == (struct lpfc_nodelist *) mb->context2)) {
1251                         mp = (struct lpfc_dmabuf *) (mb->context1);
1252                         if (mp) {
1253                                 __lpfc_mbuf_free(phba, mp->virt, mp->phys);
1254                                 kfree(mp);
1255                         }
1256                         lpfc_nlp_put(ndlp);
1257                         list_del(&mb->list);
1258                         mempool_free(mb, phba->mbox_mem_pool);
1259                 }
1260         }
1261         spin_unlock_irq(&phba->hbalock);
1262
1263         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1264         return ndlp->nlp_state;
1265 }
1266
1267 static uint32_t
1268 lpfc_rcv_padisc_reglogin_issue(struct lpfc_vport *vport,
1269                                struct lpfc_nodelist *ndlp,
1270                                void *arg,
1271                                uint32_t evt)
1272 {
1273         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1274
1275         lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1276         return ndlp->nlp_state;
1277 }
1278
1279 static uint32_t
1280 lpfc_rcv_prlo_reglogin_issue(struct lpfc_vport *vport,
1281                              struct lpfc_nodelist *ndlp,
1282                              void *arg,
1283                              uint32_t evt)
1284 {
1285         struct lpfc_iocbq *cmdiocb;
1286
1287         cmdiocb = (struct lpfc_iocbq *) arg;
1288         lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
1289         return ndlp->nlp_state;
1290 }
1291
1292 static uint32_t
1293 lpfc_cmpl_reglogin_reglogin_issue(struct lpfc_vport *vport,
1294                                   struct lpfc_nodelist *ndlp,
1295                                   void *arg,
1296                                   uint32_t evt)
1297 {
1298         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1299         LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg;
1300         MAILBOX_t *mb = &pmb->mb;
1301         uint32_t did  = mb->un.varWords[1];
1302
1303         if (mb->mbxStatus) {
1304                 /* RegLogin failed */
1305                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
1306                                 "0246 RegLogin failed Data: x%x x%x x%x\n",
1307                                 did, mb->mbxStatus, vport->port_state);
1308                 /*
1309                  * If RegLogin failed due to lack of HBA resources do not
1310                  * retry discovery.
1311                  */
1312                 if (mb->mbxStatus == MBXERR_RPI_FULL) {
1313                         ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1314                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1315                         return ndlp->nlp_state;
1316                 }
1317
1318                 /* Put ndlp in npr state set plogi timer for 1 sec */
1319                 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ * 1);
1320                 spin_lock_irq(shost->host_lock);
1321                 ndlp->nlp_flag |= NLP_DELAY_TMO;
1322                 spin_unlock_irq(shost->host_lock);
1323                 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
1324
1325                 lpfc_issue_els_logo(vport, ndlp, 0);
1326                 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1327                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1328                 return ndlp->nlp_state;
1329         }
1330
1331         ndlp->nlp_rpi = mb->un.varWords[0];
1332
1333         /* Only if we are not a fabric nport do we issue PRLI */
1334         if (!(ndlp->nlp_type & NLP_FABRIC)) {
1335                 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1336                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PRLI_ISSUE);
1337                 lpfc_issue_els_prli(vport, ndlp, 0);
1338         } else {
1339                 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1340                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1341         }
1342         return ndlp->nlp_state;
1343 }
1344
1345 static uint32_t
1346 lpfc_device_rm_reglogin_issue(struct lpfc_vport *vport,
1347                               struct lpfc_nodelist *ndlp,
1348                               void *arg,
1349                               uint32_t evt)
1350 {
1351         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1352
1353         if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1354                 spin_lock_irq(shost->host_lock);
1355                 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1356                 spin_unlock_irq(shost->host_lock);
1357                 return ndlp->nlp_state;
1358         } else {
1359                 lpfc_drop_node(vport, ndlp);
1360                 return NLP_STE_FREED_NODE;
1361         }
1362 }
1363
1364 static uint32_t
1365 lpfc_device_recov_reglogin_issue(struct lpfc_vport *vport,
1366                                  struct lpfc_nodelist *ndlp,
1367                                  void *arg,
1368                                  uint32_t evt)
1369 {
1370         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1371
1372         /* Don't do anything that will mess up processing of the
1373          * previous RSCN.
1374          */
1375         if (vport->fc_flag & FC_RSCN_DEFERRED)
1376                 return ndlp->nlp_state;
1377
1378         ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1379         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1380         spin_lock_irq(shost->host_lock);
1381         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1382         spin_unlock_irq(shost->host_lock);
1383         lpfc_disc_set_adisc(vport, ndlp);
1384         return ndlp->nlp_state;
1385 }
1386
1387 static uint32_t
1388 lpfc_rcv_plogi_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1389                           void *arg, uint32_t evt)
1390 {
1391         struct lpfc_iocbq *cmdiocb;
1392
1393         cmdiocb = (struct lpfc_iocbq *) arg;
1394
1395         lpfc_rcv_plogi(vport, ndlp, cmdiocb);
1396         return ndlp->nlp_state;
1397 }
1398
1399 static uint32_t
1400 lpfc_rcv_prli_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1401                          void *arg, uint32_t evt)
1402 {
1403         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1404
1405         lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1406         return ndlp->nlp_state;
1407 }
1408
1409 static uint32_t
1410 lpfc_rcv_logo_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1411                          void *arg, uint32_t evt)
1412 {
1413         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1414
1415         /* Software abort outstanding PRLI before sending acc */
1416         lpfc_els_abort(vport->phba, ndlp);
1417
1418         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1419         return ndlp->nlp_state;
1420 }
1421
1422 static uint32_t
1423 lpfc_rcv_padisc_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1424                            void *arg, uint32_t evt)
1425 {
1426         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1427
1428         lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1429         return ndlp->nlp_state;
1430 }
1431
1432 /* This routine is envoked when we rcv a PRLO request from a nport
1433  * we are logged into.  We should send back a PRLO rsp setting the
1434  * appropriate bits.
1435  * NEXT STATE = PRLI_ISSUE
1436  */
1437 static uint32_t
1438 lpfc_rcv_prlo_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1439                          void *arg, uint32_t evt)
1440 {
1441         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1442
1443         lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
1444         return ndlp->nlp_state;
1445 }
1446
1447 static uint32_t
1448 lpfc_cmpl_prli_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1449                           void *arg, uint32_t evt)
1450 {
1451         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1452         struct lpfc_iocbq *cmdiocb, *rspiocb;
1453         struct lpfc_hba   *phba = vport->phba;
1454         IOCB_t *irsp;
1455         PRLI *npr;
1456
1457         cmdiocb = (struct lpfc_iocbq *) arg;
1458         rspiocb = cmdiocb->context_un.rsp_iocb;
1459         npr = (PRLI *)lpfc_check_elscmpl_iocb(phba, cmdiocb, rspiocb);
1460
1461         irsp = &rspiocb->iocb;
1462         if (irsp->ulpStatus) {
1463                 if ((vport->port_type == LPFC_NPIV_PORT) &&
1464                     vport->cfg_restrict_login) {
1465                         goto out;
1466                 }
1467                 ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
1468                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1469                 return ndlp->nlp_state;
1470         }
1471
1472         /* Check out PRLI rsp */
1473         ndlp->nlp_type &= ~(NLP_FCP_TARGET | NLP_FCP_INITIATOR);
1474         ndlp->nlp_fcp_info &= ~NLP_FCP_2_DEVICE;
1475         if ((npr->acceptRspCode == PRLI_REQ_EXECUTED) &&
1476             (npr->prliType == PRLI_FCP_TYPE)) {
1477                 if (npr->initiatorFunc)
1478                         ndlp->nlp_type |= NLP_FCP_INITIATOR;
1479                 if (npr->targetFunc)
1480                         ndlp->nlp_type |= NLP_FCP_TARGET;
1481                 if (npr->Retry)
1482                         ndlp->nlp_fcp_info |= NLP_FCP_2_DEVICE;
1483         }
1484         if (!(ndlp->nlp_type & NLP_FCP_TARGET) &&
1485             (vport->port_type == LPFC_NPIV_PORT) &&
1486              vport->cfg_restrict_login) {
1487 out:
1488                 spin_lock_irq(shost->host_lock);
1489                 ndlp->nlp_flag |= NLP_TARGET_REMOVE;
1490                 spin_unlock_irq(shost->host_lock);
1491                 lpfc_issue_els_logo(vport, ndlp, 0);
1492
1493                 ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
1494                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1495                 return ndlp->nlp_state;
1496         }
1497
1498         ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
1499         if (ndlp->nlp_type & NLP_FCP_TARGET)
1500                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_MAPPED_NODE);
1501         else
1502                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1503         return ndlp->nlp_state;
1504 }
1505
1506 /*! lpfc_device_rm_prli_issue
1507  *
1508  * \pre
1509  * \post
1510  * \param   phba
1511  * \param   ndlp
1512  * \param   arg
1513  * \param   evt
1514  * \return  uint32_t
1515  *
1516  * \b Description:
1517  *    This routine is envoked when we a request to remove a nport we are in the
1518  *    process of PRLIing. We should software abort outstanding prli, unreg
1519  *    login, send a logout. We will change node state to UNUSED_NODE, put it
1520  *    on plogi list so it can be freed when LOGO completes.
1521  *
1522  */
1523
1524 static uint32_t
1525 lpfc_device_rm_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1526                           void *arg, uint32_t evt)
1527 {
1528         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1529
1530         if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1531                 spin_lock_irq(shost->host_lock);
1532                 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1533                 spin_unlock_irq(shost->host_lock);
1534                 return ndlp->nlp_state;
1535         } else {
1536                 /* software abort outstanding PLOGI */
1537                 lpfc_els_abort(vport->phba, ndlp);
1538
1539                 lpfc_drop_node(vport, ndlp);
1540                 return NLP_STE_FREED_NODE;
1541         }
1542 }
1543
1544
1545 /*! lpfc_device_recov_prli_issue
1546  *
1547  * \pre
1548  * \post
1549  * \param   phba
1550  * \param   ndlp
1551  * \param   arg
1552  * \param   evt
1553  * \return  uint32_t
1554  *
1555  * \b Description:
1556  *    The routine is envoked when the state of a device is unknown, like
1557  *    during a link down. We should remove the nodelist entry from the
1558  *    unmapped list, issue a UNREG_LOGIN, do a software abort of the
1559  *    outstanding PRLI command, then free the node entry.
1560  */
1561 static uint32_t
1562 lpfc_device_recov_prli_issue(struct lpfc_vport *vport,
1563                              struct lpfc_nodelist *ndlp,
1564                              void *arg,
1565                              uint32_t evt)
1566 {
1567         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1568         struct lpfc_hba  *phba = vport->phba;
1569
1570         /* Don't do anything that will mess up processing of the
1571          * previous RSCN.
1572          */
1573         if (vport->fc_flag & FC_RSCN_DEFERRED)
1574                 return ndlp->nlp_state;
1575
1576         /* software abort outstanding PRLI */
1577         lpfc_els_abort(phba, ndlp);
1578
1579         ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
1580         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1581         spin_lock_irq(shost->host_lock);
1582         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1583         spin_unlock_irq(shost->host_lock);
1584         lpfc_disc_set_adisc(vport, ndlp);
1585         return ndlp->nlp_state;
1586 }
1587
1588 static uint32_t
1589 lpfc_rcv_plogi_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1590                           void *arg, uint32_t evt)
1591 {
1592         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1593
1594         lpfc_rcv_plogi(vport, ndlp, cmdiocb);
1595         return ndlp->nlp_state;
1596 }
1597
1598 static uint32_t
1599 lpfc_rcv_prli_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1600                          void *arg, uint32_t evt)
1601 {
1602         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1603
1604         lpfc_rcv_prli(vport, ndlp, cmdiocb);
1605         lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1606         return ndlp->nlp_state;
1607 }
1608
1609 static uint32_t
1610 lpfc_rcv_logo_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1611                          void *arg, uint32_t evt)
1612 {
1613         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1614
1615         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1616         return ndlp->nlp_state;
1617 }
1618
1619 static uint32_t
1620 lpfc_rcv_padisc_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1621                            void *arg, uint32_t evt)
1622 {
1623         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1624
1625         lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1626         return ndlp->nlp_state;
1627 }
1628
1629 static uint32_t
1630 lpfc_rcv_prlo_unmap_node(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_device_recov_unmap_node(struct lpfc_vport *vport,
1641                              struct lpfc_nodelist *ndlp,
1642                              void *arg,
1643                              uint32_t evt)
1644 {
1645         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1646
1647         ndlp->nlp_prev_state = NLP_STE_UNMAPPED_NODE;
1648         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1649         spin_lock_irq(shost->host_lock);
1650         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1651         spin_unlock_irq(shost->host_lock);
1652         lpfc_disc_set_adisc(vport, ndlp);
1653
1654         return ndlp->nlp_state;
1655 }
1656
1657 static uint32_t
1658 lpfc_rcv_plogi_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1659                            void *arg, uint32_t evt)
1660 {
1661         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1662
1663         lpfc_rcv_plogi(vport, ndlp, cmdiocb);
1664         return ndlp->nlp_state;
1665 }
1666
1667 static uint32_t
1668 lpfc_rcv_prli_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1669                           void *arg, uint32_t evt)
1670 {
1671         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1672
1673         lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1674         return ndlp->nlp_state;
1675 }
1676
1677 static uint32_t
1678 lpfc_rcv_logo_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1679                           void *arg, uint32_t evt)
1680 {
1681         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1682
1683         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1684         return ndlp->nlp_state;
1685 }
1686
1687 static uint32_t
1688 lpfc_rcv_padisc_mapped_node(struct lpfc_vport *vport,
1689                             struct lpfc_nodelist *ndlp,
1690                             void *arg, uint32_t evt)
1691 {
1692         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1693
1694         lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1695         return ndlp->nlp_state;
1696 }
1697
1698 static uint32_t
1699 lpfc_rcv_prlo_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1700                           void *arg, uint32_t evt)
1701 {
1702         struct lpfc_hba  *phba = vport->phba;
1703         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1704
1705         /* flush the target */
1706         lpfc_sli_abort_iocb(vport, &phba->sli.ring[phba->sli.fcp_ring],
1707                             ndlp->nlp_sid, 0, LPFC_CTX_TGT);
1708
1709         /* Treat like rcv logo */
1710         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_PRLO);
1711         return ndlp->nlp_state;
1712 }
1713
1714 static uint32_t
1715 lpfc_device_recov_mapped_node(struct lpfc_vport *vport,
1716                               struct lpfc_nodelist *ndlp,
1717                               void *arg,
1718                               uint32_t evt)
1719 {
1720         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1721
1722         ndlp->nlp_prev_state = NLP_STE_MAPPED_NODE;
1723         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1724         spin_lock_irq(shost->host_lock);
1725         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1726         spin_unlock_irq(shost->host_lock);
1727         lpfc_disc_set_adisc(vport, ndlp);
1728         return ndlp->nlp_state;
1729 }
1730
1731 static uint32_t
1732 lpfc_rcv_plogi_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1733                         void *arg, uint32_t evt)
1734 {
1735         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1736         struct lpfc_iocbq *cmdiocb  = (struct lpfc_iocbq *) arg;
1737
1738         /* Ignore PLOGI if we have an outstanding LOGO */
1739         if (ndlp->nlp_flag & (NLP_LOGO_SND | NLP_LOGO_ACC)) {
1740                 return ndlp->nlp_state;
1741         }
1742
1743         if (lpfc_rcv_plogi(vport, ndlp, cmdiocb)) {
1744                 spin_lock_irq(shost->host_lock);
1745                 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
1746                 spin_unlock_irq(shost->host_lock);
1747                 return ndlp->nlp_state;
1748         }
1749
1750         /* send PLOGI immediately, move to PLOGI issue state */
1751         if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) {
1752                 ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
1753                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
1754                 lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
1755         }
1756
1757         return ndlp->nlp_state;
1758 }
1759
1760 static uint32_t
1761 lpfc_rcv_prli_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1762                        void *arg, uint32_t evt)
1763 {
1764         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
1765         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1766         struct ls_rjt     stat;
1767
1768         memset(&stat, 0, sizeof (struct ls_rjt));
1769         stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
1770         stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
1771         lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
1772
1773         if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) {
1774                 if (ndlp->nlp_flag & NLP_NPR_ADISC) {
1775                         spin_lock_irq(shost->host_lock);
1776                         ndlp->nlp_flag &= ~NLP_NPR_ADISC;
1777                         ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
1778                         spin_unlock_irq(shost->host_lock);
1779                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_ADISC_ISSUE);
1780                         lpfc_issue_els_adisc(vport, ndlp, 0);
1781                 } else {
1782                         ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
1783                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
1784                         lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
1785                 }
1786         }
1787         return ndlp->nlp_state;
1788 }
1789
1790 static uint32_t
1791 lpfc_rcv_logo_npr_node(struct lpfc_vport *vport,  struct lpfc_nodelist *ndlp,
1792                        void *arg, uint32_t evt)
1793 {
1794         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1795
1796         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1797         return ndlp->nlp_state;
1798 }
1799
1800 static uint32_t
1801 lpfc_rcv_padisc_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1802                          void *arg, uint32_t evt)
1803 {
1804         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1805
1806         lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1807
1808         /*
1809          * Do not start discovery if discovery is about to start
1810          * or discovery in progress for this node. Starting discovery
1811          * here will affect the counting of discovery threads.
1812          */
1813         if (!(ndlp->nlp_flag & NLP_DELAY_TMO) &&
1814             !(ndlp->nlp_flag & NLP_NPR_2B_DISC)) {
1815                 if (ndlp->nlp_flag & NLP_NPR_ADISC) {
1816                         ndlp->nlp_flag &= ~NLP_NPR_ADISC;
1817                         ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
1818                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_ADISC_ISSUE);
1819                         lpfc_issue_els_adisc(vport, ndlp, 0);
1820                 } else {
1821                         ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
1822                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
1823                         lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
1824                 }
1825         }
1826         return ndlp->nlp_state;
1827 }
1828
1829 static uint32_t
1830 lpfc_rcv_prlo_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1831                        void *arg, uint32_t evt)
1832 {
1833         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1834         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1835
1836         spin_lock_irq(shost->host_lock);
1837         ndlp->nlp_flag |= NLP_LOGO_ACC;
1838         spin_unlock_irq(shost->host_lock);
1839
1840         lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
1841
1842         if ((ndlp->nlp_flag & NLP_DELAY_TMO) == 0) {
1843                 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ * 1);
1844                 spin_lock_irq(shost->host_lock);
1845                 ndlp->nlp_flag |= NLP_DELAY_TMO;
1846                 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
1847                 spin_unlock_irq(shost->host_lock);
1848                 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
1849         } else {
1850                 spin_lock_irq(shost->host_lock);
1851                 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
1852                 spin_unlock_irq(shost->host_lock);
1853         }
1854         return ndlp->nlp_state;
1855 }
1856
1857 static uint32_t
1858 lpfc_cmpl_plogi_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1859                          void *arg, uint32_t evt)
1860 {
1861         struct lpfc_iocbq *cmdiocb, *rspiocb;
1862         IOCB_t *irsp;
1863
1864         cmdiocb = (struct lpfc_iocbq *) arg;
1865         rspiocb = cmdiocb->context_un.rsp_iocb;
1866
1867         irsp = &rspiocb->iocb;
1868         if (irsp->ulpStatus) {
1869                 ndlp->nlp_flag |= NLP_DEFER_RM;
1870                 return NLP_STE_FREED_NODE;
1871         }
1872         return ndlp->nlp_state;
1873 }
1874
1875 static uint32_t
1876 lpfc_cmpl_prli_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1877                         void *arg, uint32_t evt)
1878 {
1879         struct lpfc_iocbq *cmdiocb, *rspiocb;
1880         IOCB_t *irsp;
1881
1882         cmdiocb = (struct lpfc_iocbq *) arg;
1883         rspiocb = cmdiocb->context_un.rsp_iocb;
1884
1885         irsp = &rspiocb->iocb;
1886         if (irsp->ulpStatus && (ndlp->nlp_flag & NLP_NODEV_REMOVE)) {
1887                 lpfc_drop_node(vport, ndlp);
1888                 return NLP_STE_FREED_NODE;
1889         }
1890         return ndlp->nlp_state;
1891 }
1892
1893 static uint32_t
1894 lpfc_cmpl_logo_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1895                         void *arg, uint32_t evt)
1896 {
1897         lpfc_unreg_rpi(vport, ndlp);
1898         /* This routine does nothing, just return the current state */
1899         return ndlp->nlp_state;
1900 }
1901
1902 static uint32_t
1903 lpfc_cmpl_adisc_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1904                          void *arg, uint32_t evt)
1905 {
1906         struct lpfc_iocbq *cmdiocb, *rspiocb;
1907         IOCB_t *irsp;
1908
1909         cmdiocb = (struct lpfc_iocbq *) arg;
1910         rspiocb = cmdiocb->context_un.rsp_iocb;
1911
1912         irsp = &rspiocb->iocb;
1913         if (irsp->ulpStatus && (ndlp->nlp_flag & NLP_NODEV_REMOVE)) {
1914                 lpfc_drop_node(vport, ndlp);
1915                 return NLP_STE_FREED_NODE;
1916         }
1917         return ndlp->nlp_state;
1918 }
1919
1920 static uint32_t
1921 lpfc_cmpl_reglogin_npr_node(struct lpfc_vport *vport,
1922                             struct lpfc_nodelist *ndlp,
1923                             void *arg, uint32_t evt)
1924 {
1925         LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg;
1926         MAILBOX_t    *mb = &pmb->mb;
1927
1928         if (!mb->mbxStatus)
1929                 ndlp->nlp_rpi = mb->un.varWords[0];
1930         else {
1931                 if (ndlp->nlp_flag & NLP_NODEV_REMOVE) {
1932                         lpfc_drop_node(vport, ndlp);
1933                         return NLP_STE_FREED_NODE;
1934                 }
1935         }
1936         return ndlp->nlp_state;
1937 }
1938
1939 static uint32_t
1940 lpfc_device_rm_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1941                         void *arg, uint32_t evt)
1942 {
1943         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1944
1945         if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1946                 spin_lock_irq(shost->host_lock);
1947                 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1948                 spin_unlock_irq(shost->host_lock);
1949                 return ndlp->nlp_state;
1950         }
1951         lpfc_drop_node(vport, ndlp);
1952         return NLP_STE_FREED_NODE;
1953 }
1954
1955 static uint32_t
1956 lpfc_device_recov_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1957                            void *arg, uint32_t evt)
1958 {
1959         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1960
1961         /* Don't do anything that will mess up processing of the
1962          * previous RSCN.
1963          */
1964         if (vport->fc_flag & FC_RSCN_DEFERRED)
1965                 return ndlp->nlp_state;
1966
1967         spin_lock_irq(shost->host_lock);
1968         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1969         spin_unlock_irq(shost->host_lock);
1970         if (ndlp->nlp_flag & NLP_DELAY_TMO) {
1971                 lpfc_cancel_retry_delay_tmo(vport, ndlp);
1972         }
1973         return ndlp->nlp_state;
1974 }
1975
1976
1977 /* This next section defines the NPort Discovery State Machine */
1978
1979 /* There are 4 different double linked lists nodelist entries can reside on.
1980  * The plogi list and adisc list are used when Link Up discovery or RSCN
1981  * processing is needed. Each list holds the nodes that we will send PLOGI
1982  * or ADISC on. These lists will keep track of what nodes will be effected
1983  * by an RSCN, or a Link Up (Typically, all nodes are effected on Link Up).
1984  * The unmapped_list will contain all nodes that we have successfully logged
1985  * into at the Fibre Channel level. The mapped_list will contain all nodes
1986  * that are mapped FCP targets.
1987  */
1988 /*
1989  * The bind list is a list of undiscovered (potentially non-existent) nodes
1990  * that we have saved binding information on. This information is used when
1991  * nodes transition from the unmapped to the mapped list.
1992  */
1993 /* For UNUSED_NODE state, the node has just been allocated .
1994  * For PLOGI_ISSUE and REG_LOGIN_ISSUE, the node is on
1995  * the PLOGI list. For REG_LOGIN_COMPL, the node is taken off the PLOGI list
1996  * and put on the unmapped list. For ADISC processing, the node is taken off
1997  * the ADISC list and placed on either the mapped or unmapped list (depending
1998  * on its previous state). Once on the unmapped list, a PRLI is issued and the
1999  * state changed to PRLI_ISSUE. When the PRLI completion occurs, the state is
2000  * changed to UNMAPPED_NODE. If the completion indicates a mapped
2001  * node, the node is taken off the unmapped list. The binding list is checked
2002  * for a valid binding, or a binding is automatically assigned. If binding
2003  * assignment is unsuccessful, the node is left on the unmapped list. If
2004  * binding assignment is successful, the associated binding list entry (if
2005  * any) is removed, and the node is placed on the mapped list.
2006  */
2007 /*
2008  * For a Link Down, all nodes on the ADISC, PLOGI, unmapped or mapped
2009  * lists will receive a DEVICE_RECOVERY event. If the linkdown or devloss timers
2010  * expire, all effected nodes will receive a DEVICE_RM event.
2011  */
2012 /*
2013  * For a Link Up or RSCN, all nodes will move from the mapped / unmapped lists
2014  * to either the ADISC or PLOGI list.  After a Nameserver query or ALPA loopmap
2015  * check, additional nodes may be added or removed (via DEVICE_RM) to / from
2016  * the PLOGI or ADISC lists. Once the PLOGI and ADISC lists are populated,
2017  * we will first process the ADISC list.  32 entries are processed initially and
2018  * ADISC is initited for each one.  Completions / Events for each node are
2019  * funnelled thru the state machine.  As each node finishes ADISC processing, it
2020  * starts ADISC for any nodes waiting for ADISC processing. If no nodes are
2021  * waiting, and the ADISC list count is identically 0, then we are done. For
2022  * Link Up discovery, since all nodes on the PLOGI list are UNREG_LOGIN'ed, we
2023  * can issue a CLEAR_LA and reenable Link Events. Next we will process the PLOGI
2024  * list.  32 entries are processed initially and PLOGI is initited for each one.
2025  * Completions / Events for each node are funnelled thru the state machine.  As
2026  * each node finishes PLOGI processing, it starts PLOGI for any nodes waiting
2027  * for PLOGI processing. If no nodes are waiting, and the PLOGI list count is
2028  * indentically 0, then we are done. We have now completed discovery / RSCN
2029  * handling. Upon completion, ALL nodes should be on either the mapped or
2030  * unmapped lists.
2031  */
2032
2033 static uint32_t (*lpfc_disc_action[NLP_STE_MAX_STATE * NLP_EVT_MAX_EVENT])
2034      (struct lpfc_vport *, struct lpfc_nodelist *, void *, uint32_t) = {
2035         /* Action routine                  Event       Current State  */
2036         lpfc_rcv_plogi_unused_node,     /* RCV_PLOGI   UNUSED_NODE    */
2037         lpfc_rcv_els_unused_node,       /* RCV_PRLI        */
2038         lpfc_rcv_logo_unused_node,      /* RCV_LOGO        */
2039         lpfc_rcv_els_unused_node,       /* RCV_ADISC       */
2040         lpfc_rcv_els_unused_node,       /* RCV_PDISC       */
2041         lpfc_rcv_els_unused_node,       /* RCV_PRLO        */
2042         lpfc_disc_illegal,              /* CMPL_PLOGI      */
2043         lpfc_disc_illegal,              /* CMPL_PRLI       */
2044         lpfc_cmpl_logo_unused_node,     /* CMPL_LOGO       */
2045         lpfc_disc_illegal,              /* CMPL_ADISC      */
2046         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
2047         lpfc_device_rm_unused_node,     /* DEVICE_RM       */
2048         lpfc_disc_illegal,              /* DEVICE_RECOVERY */
2049
2050         lpfc_rcv_plogi_plogi_issue,     /* RCV_PLOGI   PLOGI_ISSUE    */
2051         lpfc_rcv_prli_plogi_issue,      /* RCV_PRLI        */
2052         lpfc_rcv_logo_plogi_issue,      /* RCV_LOGO        */
2053         lpfc_rcv_els_plogi_issue,       /* RCV_ADISC       */
2054         lpfc_rcv_els_plogi_issue,       /* RCV_PDISC       */
2055         lpfc_rcv_els_plogi_issue,       /* RCV_PRLO        */
2056         lpfc_cmpl_plogi_plogi_issue,    /* CMPL_PLOGI      */
2057         lpfc_disc_illegal,              /* CMPL_PRLI       */
2058         lpfc_cmpl_logo_plogi_issue,     /* CMPL_LOGO       */
2059         lpfc_disc_illegal,              /* CMPL_ADISC      */
2060         lpfc_cmpl_reglogin_plogi_issue,/* CMPL_REG_LOGIN  */
2061         lpfc_device_rm_plogi_issue,     /* DEVICE_RM       */
2062         lpfc_device_recov_plogi_issue,  /* DEVICE_RECOVERY */
2063
2064         lpfc_rcv_plogi_adisc_issue,     /* RCV_PLOGI   ADISC_ISSUE    */
2065         lpfc_rcv_prli_adisc_issue,      /* RCV_PRLI        */
2066         lpfc_rcv_logo_adisc_issue,      /* RCV_LOGO        */
2067         lpfc_rcv_padisc_adisc_issue,    /* RCV_ADISC       */
2068         lpfc_rcv_padisc_adisc_issue,    /* RCV_PDISC       */
2069         lpfc_rcv_prlo_adisc_issue,      /* RCV_PRLO        */
2070         lpfc_disc_illegal,              /* CMPL_PLOGI      */
2071         lpfc_disc_illegal,              /* CMPL_PRLI       */
2072         lpfc_disc_illegal,              /* CMPL_LOGO       */
2073         lpfc_cmpl_adisc_adisc_issue,    /* CMPL_ADISC      */
2074         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
2075         lpfc_device_rm_adisc_issue,     /* DEVICE_RM       */
2076         lpfc_device_recov_adisc_issue,  /* DEVICE_RECOVERY */
2077
2078         lpfc_rcv_plogi_reglogin_issue,  /* RCV_PLOGI  REG_LOGIN_ISSUE */
2079         lpfc_rcv_prli_reglogin_issue,   /* RCV_PLOGI       */
2080         lpfc_rcv_logo_reglogin_issue,   /* RCV_LOGO        */
2081         lpfc_rcv_padisc_reglogin_issue, /* RCV_ADISC       */
2082         lpfc_rcv_padisc_reglogin_issue, /* RCV_PDISC       */
2083         lpfc_rcv_prlo_reglogin_issue,   /* RCV_PRLO        */
2084         lpfc_cmpl_plogi_illegal,        /* CMPL_PLOGI      */
2085         lpfc_disc_illegal,              /* CMPL_PRLI       */
2086         lpfc_disc_illegal,              /* CMPL_LOGO       */
2087         lpfc_disc_illegal,              /* CMPL_ADISC      */
2088         lpfc_cmpl_reglogin_reglogin_issue,/* CMPL_REG_LOGIN  */
2089         lpfc_device_rm_reglogin_issue,  /* DEVICE_RM       */
2090         lpfc_device_recov_reglogin_issue,/* DEVICE_RECOVERY */
2091
2092         lpfc_rcv_plogi_prli_issue,      /* RCV_PLOGI   PRLI_ISSUE     */
2093         lpfc_rcv_prli_prli_issue,       /* RCV_PRLI        */
2094         lpfc_rcv_logo_prli_issue,       /* RCV_LOGO        */
2095         lpfc_rcv_padisc_prli_issue,     /* RCV_ADISC       */
2096         lpfc_rcv_padisc_prli_issue,     /* RCV_PDISC       */
2097         lpfc_rcv_prlo_prli_issue,       /* RCV_PRLO        */
2098         lpfc_cmpl_plogi_illegal,        /* CMPL_PLOGI      */
2099         lpfc_cmpl_prli_prli_issue,      /* CMPL_PRLI       */
2100         lpfc_disc_illegal,              /* CMPL_LOGO       */
2101         lpfc_disc_illegal,              /* CMPL_ADISC      */
2102         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
2103         lpfc_device_rm_prli_issue,      /* DEVICE_RM       */
2104         lpfc_device_recov_prli_issue,   /* DEVICE_RECOVERY */
2105
2106         lpfc_rcv_plogi_unmap_node,      /* RCV_PLOGI   UNMAPPED_NODE  */
2107         lpfc_rcv_prli_unmap_node,       /* RCV_PRLI        */
2108         lpfc_rcv_logo_unmap_node,       /* RCV_LOGO        */
2109         lpfc_rcv_padisc_unmap_node,     /* RCV_ADISC       */
2110         lpfc_rcv_padisc_unmap_node,     /* RCV_PDISC       */
2111         lpfc_rcv_prlo_unmap_node,       /* RCV_PRLO        */
2112         lpfc_disc_illegal,              /* CMPL_PLOGI      */
2113         lpfc_disc_illegal,              /* CMPL_PRLI       */
2114         lpfc_disc_illegal,              /* CMPL_LOGO       */
2115         lpfc_disc_illegal,              /* CMPL_ADISC      */
2116         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
2117         lpfc_disc_illegal,              /* DEVICE_RM       */
2118         lpfc_device_recov_unmap_node,   /* DEVICE_RECOVERY */
2119
2120         lpfc_rcv_plogi_mapped_node,     /* RCV_PLOGI   MAPPED_NODE    */
2121         lpfc_rcv_prli_mapped_node,      /* RCV_PRLI        */
2122         lpfc_rcv_logo_mapped_node,      /* RCV_LOGO        */
2123         lpfc_rcv_padisc_mapped_node,    /* RCV_ADISC       */
2124         lpfc_rcv_padisc_mapped_node,    /* RCV_PDISC       */
2125         lpfc_rcv_prlo_mapped_node,      /* RCV_PRLO        */
2126         lpfc_disc_illegal,              /* CMPL_PLOGI      */
2127         lpfc_disc_illegal,              /* CMPL_PRLI       */
2128         lpfc_disc_illegal,              /* CMPL_LOGO       */
2129         lpfc_disc_illegal,              /* CMPL_ADISC      */
2130         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
2131         lpfc_disc_illegal,              /* DEVICE_RM       */
2132         lpfc_device_recov_mapped_node,  /* DEVICE_RECOVERY */
2133
2134         lpfc_rcv_plogi_npr_node,        /* RCV_PLOGI   NPR_NODE    */
2135         lpfc_rcv_prli_npr_node,         /* RCV_PRLI        */
2136         lpfc_rcv_logo_npr_node,         /* RCV_LOGO        */
2137         lpfc_rcv_padisc_npr_node,       /* RCV_ADISC       */
2138         lpfc_rcv_padisc_npr_node,       /* RCV_PDISC       */
2139         lpfc_rcv_prlo_npr_node,         /* RCV_PRLO        */
2140         lpfc_cmpl_plogi_npr_node,       /* CMPL_PLOGI      */
2141         lpfc_cmpl_prli_npr_node,        /* CMPL_PRLI       */
2142         lpfc_cmpl_logo_npr_node,        /* CMPL_LOGO       */
2143         lpfc_cmpl_adisc_npr_node,       /* CMPL_ADISC      */
2144         lpfc_cmpl_reglogin_npr_node,    /* CMPL_REG_LOGIN  */
2145         lpfc_device_rm_npr_node,        /* DEVICE_RM       */
2146         lpfc_device_recov_npr_node,     /* DEVICE_RECOVERY */
2147 };
2148
2149 int
2150 lpfc_disc_state_machine(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2151                         void *arg, uint32_t evt)
2152 {
2153         uint32_t cur_state, rc;
2154         uint32_t(*func) (struct lpfc_vport *, struct lpfc_nodelist *, void *,
2155                          uint32_t);
2156         uint32_t got_ndlp = 0;
2157
2158         if (lpfc_nlp_get(ndlp))
2159                 got_ndlp = 1;
2160
2161         cur_state = ndlp->nlp_state;
2162
2163         /* DSM in event <evt> on NPort <nlp_DID> in state <cur_state> */
2164         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
2165                          "0211 DSM in event x%x on NPort x%x in "
2166                          "state %d Data: x%x\n",
2167                          evt, ndlp->nlp_DID, cur_state, ndlp->nlp_flag);
2168
2169         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_DSM,
2170                  "DSM in:          evt:%d ste:%d did:x%x",
2171                 evt, cur_state, ndlp->nlp_DID);
2172
2173         func = lpfc_disc_action[(cur_state * NLP_EVT_MAX_EVENT) + evt];
2174         rc = (func) (vport, ndlp, arg, evt);
2175
2176         /* DSM out state <rc> on NPort <nlp_DID> */
2177         if (got_ndlp) {
2178                 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
2179                          "0212 DSM out state %d on NPort x%x Data: x%x\n",
2180                          rc, ndlp->nlp_DID, ndlp->nlp_flag);
2181
2182                 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_DSM,
2183                         "DSM out:         ste:%d did:x%x flg:x%x",
2184                         rc, ndlp->nlp_DID, ndlp->nlp_flag);
2185                 /* Decrement the ndlp reference count held for this function */
2186                 lpfc_nlp_put(ndlp);
2187         } else {
2188                 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
2189                         "0212 DSM out state %d on NPort free\n", rc);
2190
2191                 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_DSM,
2192                         "DSM out:         ste:%d did:x%x flg:x%x",
2193                         rc, 0, 0);
2194         }
2195
2196         return rc;
2197 }