Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid
[linux-2.6] / 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_nl.h"
34 #include "lpfc_disc.h"
35 #include "lpfc_scsi.h"
36 #include "lpfc.h"
37 #include "lpfc_logmsg.h"
38 #include "lpfc_crtn.h"
39 #include "lpfc_vport.h"
40 #include "lpfc_debugfs.h"
41
42
43 /* Called to verify a rcv'ed ADISC was intended for us. */
44 static int
45 lpfc_check_adisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
46                  struct lpfc_name *nn, struct lpfc_name *pn)
47 {
48         /* Compare the ADISC rsp WWNN / WWPN matches our internal node
49          * table entry for that node.
50          */
51         if (memcmp(nn, &ndlp->nlp_nodename, sizeof (struct lpfc_name)))
52                 return 0;
53
54         if (memcmp(pn, &ndlp->nlp_portname, sizeof (struct lpfc_name)))
55                 return 0;
56
57         /* we match, return success */
58         return 1;
59 }
60
61 int
62 lpfc_check_sparm(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
63                  struct serv_parm * sp, uint32_t class)
64 {
65         volatile struct serv_parm *hsp = &vport->fc_sparam;
66         uint16_t hsp_value, ssp_value = 0;
67
68         /*
69          * The receive data field size and buffer-to-buffer receive data field
70          * size entries are 16 bits but are represented as two 8-bit fields in
71          * the driver data structure to account for rsvd bits and other control
72          * bits.  Reconstruct and compare the fields as a 16-bit values before
73          * correcting the byte values.
74          */
75         if (sp->cls1.classValid) {
76                 hsp_value = (hsp->cls1.rcvDataSizeMsb << 8) |
77                                 hsp->cls1.rcvDataSizeLsb;
78                 ssp_value = (sp->cls1.rcvDataSizeMsb << 8) |
79                                 sp->cls1.rcvDataSizeLsb;
80                 if (!ssp_value)
81                         goto bad_service_param;
82                 if (ssp_value > hsp_value) {
83                         sp->cls1.rcvDataSizeLsb = hsp->cls1.rcvDataSizeLsb;
84                         sp->cls1.rcvDataSizeMsb = hsp->cls1.rcvDataSizeMsb;
85                 }
86         } else if (class == CLASS1) {
87                 goto bad_service_param;
88         }
89
90         if (sp->cls2.classValid) {
91                 hsp_value = (hsp->cls2.rcvDataSizeMsb << 8) |
92                                 hsp->cls2.rcvDataSizeLsb;
93                 ssp_value = (sp->cls2.rcvDataSizeMsb << 8) |
94                                 sp->cls2.rcvDataSizeLsb;
95                 if (!ssp_value)
96                         goto bad_service_param;
97                 if (ssp_value > hsp_value) {
98                         sp->cls2.rcvDataSizeLsb = hsp->cls2.rcvDataSizeLsb;
99                         sp->cls2.rcvDataSizeMsb = hsp->cls2.rcvDataSizeMsb;
100                 }
101         } else if (class == CLASS2) {
102                 goto bad_service_param;
103         }
104
105         if (sp->cls3.classValid) {
106                 hsp_value = (hsp->cls3.rcvDataSizeMsb << 8) |
107                                 hsp->cls3.rcvDataSizeLsb;
108                 ssp_value = (sp->cls3.rcvDataSizeMsb << 8) |
109                                 sp->cls3.rcvDataSizeLsb;
110                 if (!ssp_value)
111                         goto bad_service_param;
112                 if (ssp_value > hsp_value) {
113                         sp->cls3.rcvDataSizeLsb = hsp->cls3.rcvDataSizeLsb;
114                         sp->cls3.rcvDataSizeMsb = hsp->cls3.rcvDataSizeMsb;
115                 }
116         } else if (class == CLASS3) {
117                 goto bad_service_param;
118         }
119
120         /*
121          * Preserve the upper four bits of the MSB from the PLOGI response.
122          * These bits contain the Buffer-to-Buffer State Change Number
123          * from the target and need to be passed to the FW.
124          */
125         hsp_value = (hsp->cmn.bbRcvSizeMsb << 8) | hsp->cmn.bbRcvSizeLsb;
126         ssp_value = (sp->cmn.bbRcvSizeMsb << 8) | sp->cmn.bbRcvSizeLsb;
127         if (ssp_value > hsp_value) {
128                 sp->cmn.bbRcvSizeLsb = hsp->cmn.bbRcvSizeLsb;
129                 sp->cmn.bbRcvSizeMsb = (sp->cmn.bbRcvSizeMsb & 0xF0) |
130                                        (hsp->cmn.bbRcvSizeMsb & 0x0F);
131         }
132
133         memcpy(&ndlp->nlp_nodename, &sp->nodeName, sizeof (struct lpfc_name));
134         memcpy(&ndlp->nlp_portname, &sp->portName, sizeof (struct lpfc_name));
135         return 1;
136 bad_service_param:
137         lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
138                          "0207 Device %x "
139                          "(%02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x) sent "
140                          "invalid service parameters.  Ignoring device.\n",
141                          ndlp->nlp_DID,
142                          sp->nodeName.u.wwn[0], sp->nodeName.u.wwn[1],
143                          sp->nodeName.u.wwn[2], sp->nodeName.u.wwn[3],
144                          sp->nodeName.u.wwn[4], sp->nodeName.u.wwn[5],
145                          sp->nodeName.u.wwn[6], sp->nodeName.u.wwn[7]);
146         return 0;
147 }
148
149 static void *
150 lpfc_check_elscmpl_iocb(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
151                         struct lpfc_iocbq *rspiocb)
152 {
153         struct lpfc_dmabuf *pcmd, *prsp;
154         uint32_t *lp;
155         void     *ptr = NULL;
156         IOCB_t   *irsp;
157
158         irsp = &rspiocb->iocb;
159         pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
160
161         /* For lpfc_els_abort, context2 could be zero'ed to delay
162          * freeing associated memory till after ABTS completes.
163          */
164         if (pcmd) {
165                 prsp =  list_get_first(&pcmd->list, struct lpfc_dmabuf,
166                                        list);
167                 if (prsp) {
168                         lp = (uint32_t *) prsp->virt;
169                         ptr = (void *)((uint8_t *)lp + sizeof(uint32_t));
170                 }
171         } else {
172                 /* Force ulpStatus error since we are returning NULL ptr */
173                 if (!(irsp->ulpStatus)) {
174                         irsp->ulpStatus = IOSTAT_LOCAL_REJECT;
175                         irsp->un.ulpWord[4] = IOERR_SLI_ABORTED;
176                 }
177                 ptr = NULL;
178         }
179         return ptr;
180 }
181
182
183 /*
184  * Free resources / clean up outstanding I/Os
185  * associated with a LPFC_NODELIST entry. This
186  * routine effectively results in a "software abort".
187  */
188 int
189 lpfc_els_abort(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
190 {
191         LIST_HEAD(completions);
192         struct lpfc_sli  *psli = &phba->sli;
193         struct lpfc_sli_ring *pring = &psli->ring[LPFC_ELS_RING];
194         struct lpfc_iocbq *iocb, *next_iocb;
195         IOCB_t *cmd;
196
197         /* Abort outstanding I/O on NPort <nlp_DID> */
198         lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_DISCOVERY,
199                          "0205 Abort outstanding I/O on NPort x%x "
200                          "Data: x%x x%x x%x\n",
201                          ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
202                          ndlp->nlp_rpi);
203
204         lpfc_fabric_abort_nport(ndlp);
205
206         /* First check the txq */
207         spin_lock_irq(&phba->hbalock);
208         list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) {
209                 /* Check to see if iocb matches the nport we are looking for */
210                 if (lpfc_check_sli_ndlp(phba, pring, iocb, ndlp)) {
211                         /* It matches, so deque and call compl with anp error */
212                         list_move_tail(&iocb->list, &completions);
213                         pring->txq_cnt--;
214                 }
215         }
216
217         /* Next check the txcmplq */
218         list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq, list) {
219                 /* Check to see if iocb matches the nport we are looking for */
220                 if (lpfc_check_sli_ndlp(phba, pring, iocb, ndlp)) {
221                         lpfc_sli_issue_abort_iotag(phba, pring, iocb);
222                 }
223         }
224         spin_unlock_irq(&phba->hbalock);
225
226         while (!list_empty(&completions)) {
227                 iocb = list_get_first(&completions, struct lpfc_iocbq, list);
228                 cmd = &iocb->iocb;
229                 list_del_init(&iocb->list);
230
231                 if (!iocb->iocb_cmpl)
232                         lpfc_sli_release_iocbq(phba, iocb);
233                 else {
234                         cmd->ulpStatus = IOSTAT_LOCAL_REJECT;
235                         cmd->un.ulpWord[4] = IOERR_SLI_ABORTED;
236                         (iocb->iocb_cmpl) (phba, iocb, iocb);
237                 }
238         }
239         lpfc_cancel_retry_delay_tmo(phba->pport, ndlp);
240         return 0;
241 }
242
243 static int
244 lpfc_rcv_plogi(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
245                struct lpfc_iocbq *cmdiocb)
246 {
247         struct Scsi_Host   *shost = lpfc_shost_from_vport(vport);
248         struct lpfc_hba    *phba = vport->phba;
249         struct lpfc_dmabuf *pcmd;
250         uint32_t *lp;
251         IOCB_t *icmd;
252         struct serv_parm *sp;
253         LPFC_MBOXQ_t *mbox;
254         struct ls_rjt stat;
255         int rc;
256
257         memset(&stat, 0, sizeof (struct ls_rjt));
258         if (vport->port_state <= LPFC_FLOGI) {
259                 /* Before responding to PLOGI, check for pt2pt mode.
260                  * If we are pt2pt, with an outstanding FLOGI, abort
261                  * the FLOGI and resend it first.
262                  */
263                 if (vport->fc_flag & FC_PT2PT) {
264                          lpfc_els_abort_flogi(phba);
265                         if (!(vport->fc_flag & FC_PT2PT_PLOGI)) {
266                                 /* If the other side is supposed to initiate
267                                  * the PLOGI anyway, just ACC it now and
268                                  * move on with discovery.
269                                  */
270                                 phba->fc_edtov = FF_DEF_EDTOV;
271                                 phba->fc_ratov = FF_DEF_RATOV;
272                                 /* Start discovery - this should just do
273                                    CLEAR_LA */
274                                 lpfc_disc_start(vport);
275                         } else
276                                 lpfc_initial_flogi(vport);
277                 } else {
278                         stat.un.b.lsRjtRsnCode = LSRJT_LOGICAL_BSY;
279                         stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
280                         lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb,
281                                             ndlp, NULL);
282                         return 0;
283                 }
284         }
285         pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
286         lp = (uint32_t *) pcmd->virt;
287         sp = (struct serv_parm *) ((uint8_t *) lp + sizeof (uint32_t));
288         if (wwn_to_u64(sp->portName.u.wwn) == 0) {
289                 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
290                                  "0140 PLOGI Reject: invalid nname\n");
291                 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
292                 stat.un.b.lsRjtRsnCodeExp = LSEXP_INVALID_PNAME;
293                 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
294                         NULL);
295                 return 0;
296         }
297         if (wwn_to_u64(sp->nodeName.u.wwn) == 0) {
298                 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
299                                  "0141 PLOGI Reject: invalid pname\n");
300                 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
301                 stat.un.b.lsRjtRsnCodeExp = LSEXP_INVALID_NNAME;
302                 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
303                         NULL);
304                 return 0;
305         }
306         if ((lpfc_check_sparm(vport, ndlp, sp, CLASS3) == 0)) {
307                 /* Reject this request because invalid parameters */
308                 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
309                 stat.un.b.lsRjtRsnCodeExp = LSEXP_SPARM_OPTIONS;
310                 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
311                         NULL);
312                 return 0;
313         }
314         icmd = &cmdiocb->iocb;
315
316         /* PLOGI chkparm OK */
317         lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
318                          "0114 PLOGI chkparm OK Data: x%x x%x x%x x%x\n",
319                          ndlp->nlp_DID, ndlp->nlp_state, ndlp->nlp_flag,
320                          ndlp->nlp_rpi);
321
322         if (vport->cfg_fcp_class == 2 && sp->cls2.classValid)
323                 ndlp->nlp_fcp_info |= CLASS2;
324         else
325                 ndlp->nlp_fcp_info |= CLASS3;
326
327         ndlp->nlp_class_sup = 0;
328         if (sp->cls1.classValid)
329                 ndlp->nlp_class_sup |= FC_COS_CLASS1;
330         if (sp->cls2.classValid)
331                 ndlp->nlp_class_sup |= FC_COS_CLASS2;
332         if (sp->cls3.classValid)
333                 ndlp->nlp_class_sup |= FC_COS_CLASS3;
334         if (sp->cls4.classValid)
335                 ndlp->nlp_class_sup |= FC_COS_CLASS4;
336         ndlp->nlp_maxframe =
337                 ((sp->cmn.bbRcvSizeMsb & 0x0F) << 8) | sp->cmn.bbRcvSizeLsb;
338
339         /* no need to reg_login if we are already in one of these states */
340         switch (ndlp->nlp_state) {
341         case  NLP_STE_NPR_NODE:
342                 if (!(ndlp->nlp_flag & NLP_NPR_ADISC))
343                         break;
344         case  NLP_STE_REG_LOGIN_ISSUE:
345         case  NLP_STE_PRLI_ISSUE:
346         case  NLP_STE_UNMAPPED_NODE:
347         case  NLP_STE_MAPPED_NODE:
348                 lpfc_els_rsp_acc(vport, ELS_CMD_PLOGI, cmdiocb, ndlp, NULL);
349                 return 1;
350         }
351
352         if ((vport->fc_flag & FC_PT2PT) &&
353             !(vport->fc_flag & FC_PT2PT_PLOGI)) {
354                 /* rcv'ed PLOGI decides what our NPortId will be */
355                 vport->fc_myDID = icmd->un.rcvels.parmRo;
356                 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
357                 if (mbox == NULL)
358                         goto out;
359                 lpfc_config_link(phba, mbox);
360                 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
361                 mbox->vport = vport;
362                 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
363                 if (rc == MBX_NOT_FINISHED) {
364                         mempool_free(mbox, phba->mbox_mem_pool);
365                         goto out;
366                 }
367
368                 lpfc_can_disctmo(vport);
369         }
370         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
371         if (!mbox)
372                 goto out;
373
374         rc = lpfc_reg_login(phba, vport->vpi, icmd->un.rcvels.remoteID,
375                             (uint8_t *) sp, mbox, 0);
376         if (rc) {
377                 mempool_free(mbox, phba->mbox_mem_pool);
378                 goto out;
379         }
380
381         /* ACC PLOGI rsp command needs to execute first,
382          * queue this mbox command to be processed later.
383          */
384         mbox->mbox_cmpl = lpfc_mbx_cmpl_reg_login;
385         /*
386          * mbox->context2 = lpfc_nlp_get(ndlp) deferred until mailbox
387          * command issued in lpfc_cmpl_els_acc().
388          */
389         mbox->vport = vport;
390         spin_lock_irq(shost->host_lock);
391         ndlp->nlp_flag |= (NLP_ACC_REGLOGIN | NLP_RCV_PLOGI);
392         spin_unlock_irq(shost->host_lock);
393
394         /*
395          * If there is an outstanding PLOGI issued, abort it before
396          * sending ACC rsp for received PLOGI. If pending plogi
397          * is not canceled here, the plogi will be rejected by
398          * remote port and will be retried. On a configuration with
399          * single discovery thread, this will cause a huge delay in
400          * discovery. Also this will cause multiple state machines
401          * running in parallel for this node.
402          */
403         if (ndlp->nlp_state == NLP_STE_PLOGI_ISSUE) {
404                 /* software abort outstanding PLOGI */
405                 lpfc_els_abort(phba, ndlp);
406         }
407
408         if ((vport->port_type == LPFC_NPIV_PORT &&
409              vport->cfg_restrict_login)) {
410
411                 /* In order to preserve RPIs, we want to cleanup
412                  * the default RPI the firmware created to rcv
413                  * this ELS request. The only way to do this is
414                  * to register, then unregister the RPI.
415                  */
416                 spin_lock_irq(shost->host_lock);
417                 ndlp->nlp_flag |= NLP_RM_DFLT_RPI;
418                 spin_unlock_irq(shost->host_lock);
419                 stat.un.b.lsRjtRsnCode = LSRJT_INVALID_CMD;
420                 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
421                 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb,
422                         ndlp, mbox);
423                 return 1;
424         }
425         lpfc_els_rsp_acc(vport, ELS_CMD_PLOGI, cmdiocb, ndlp, mbox);
426         return 1;
427 out:
428         stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
429         stat.un.b.lsRjtRsnCodeExp = LSEXP_OUT_OF_RESOURCE;
430         lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
431         return 0;
432 }
433
434 static int
435 lpfc_rcv_padisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
436                 struct lpfc_iocbq *cmdiocb)
437 {
438         struct Scsi_Host   *shost = lpfc_shost_from_vport(vport);
439         struct lpfc_dmabuf *pcmd;
440         struct serv_parm   *sp;
441         struct lpfc_name   *pnn, *ppn;
442         struct ls_rjt stat;
443         ADISC *ap;
444         IOCB_t *icmd;
445         uint32_t *lp;
446         uint32_t cmd;
447
448         pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
449         lp = (uint32_t *) pcmd->virt;
450
451         cmd = *lp++;
452         if (cmd == ELS_CMD_ADISC) {
453                 ap = (ADISC *) lp;
454                 pnn = (struct lpfc_name *) & ap->nodeName;
455                 ppn = (struct lpfc_name *) & ap->portName;
456         } else {
457                 sp = (struct serv_parm *) lp;
458                 pnn = (struct lpfc_name *) & sp->nodeName;
459                 ppn = (struct lpfc_name *) & sp->portName;
460         }
461
462         icmd = &cmdiocb->iocb;
463         if (icmd->ulpStatus == 0 && lpfc_check_adisc(vport, ndlp, pnn, ppn)) {
464                 if (cmd == ELS_CMD_ADISC) {
465                         lpfc_els_rsp_adisc_acc(vport, cmdiocb, ndlp);
466                 } else {
467                         lpfc_els_rsp_acc(vport, ELS_CMD_PLOGI, cmdiocb, ndlp,
468                                          NULL);
469                 }
470                 return 1;
471         }
472         /* Reject this request because invalid parameters */
473         stat.un.b.lsRjtRsvd0 = 0;
474         stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
475         stat.un.b.lsRjtRsnCodeExp = LSEXP_SPARM_OPTIONS;
476         stat.un.b.vendorUnique = 0;
477         lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
478
479         /* 1 sec timeout */
480         mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ);
481
482         spin_lock_irq(shost->host_lock);
483         ndlp->nlp_flag |= NLP_DELAY_TMO;
484         spin_unlock_irq(shost->host_lock);
485         ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
486         ndlp->nlp_prev_state = ndlp->nlp_state;
487         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
488         return 0;
489 }
490
491 static int
492 lpfc_rcv_logo(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
493               struct lpfc_iocbq *cmdiocb, uint32_t els_cmd)
494 {
495         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
496
497         /* Put ndlp in NPR state with 1 sec timeout for plogi, ACC logo */
498         /* Only call LOGO ACC for first LOGO, this avoids sending unnecessary
499          * PLOGIs during LOGO storms from a device.
500          */
501         spin_lock_irq(shost->host_lock);
502         ndlp->nlp_flag |= NLP_LOGO_ACC;
503         spin_unlock_irq(shost->host_lock);
504         if (els_cmd == ELS_CMD_PRLO)
505                 lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
506         else
507                 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
508
509         if ((!(ndlp->nlp_type & NLP_FABRIC) &&
510              ((ndlp->nlp_type & NLP_FCP_TARGET) ||
511               !(ndlp->nlp_type & NLP_FCP_INITIATOR))) ||
512             (ndlp->nlp_state == NLP_STE_ADISC_ISSUE)) {
513                 /* Only try to re-login if this is NOT a Fabric Node */
514                 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ * 1);
515                 spin_lock_irq(shost->host_lock);
516                 ndlp->nlp_flag |= NLP_DELAY_TMO;
517                 spin_unlock_irq(shost->host_lock);
518
519                 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
520         }
521         ndlp->nlp_prev_state = ndlp->nlp_state;
522         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
523
524         spin_lock_irq(shost->host_lock);
525         ndlp->nlp_flag &= ~NLP_NPR_ADISC;
526         spin_unlock_irq(shost->host_lock);
527         /* The driver has to wait until the ACC completes before it continues
528          * processing the LOGO.  The action will resume in
529          * lpfc_cmpl_els_logo_acc routine. Since part of processing includes an
530          * unreg_login, the driver waits so the ACC does not get aborted.
531          */
532         return 0;
533 }
534
535 static void
536 lpfc_rcv_prli(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
537               struct lpfc_iocbq *cmdiocb)
538 {
539         struct lpfc_dmabuf *pcmd;
540         uint32_t *lp;
541         PRLI *npr;
542         struct fc_rport *rport = ndlp->rport;
543         u32 roles;
544
545         pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
546         lp = (uint32_t *) pcmd->virt;
547         npr = (PRLI *) ((uint8_t *) lp + sizeof (uint32_t));
548
549         ndlp->nlp_type &= ~(NLP_FCP_TARGET | NLP_FCP_INITIATOR);
550         ndlp->nlp_fcp_info &= ~NLP_FCP_2_DEVICE;
551         if (npr->prliType == PRLI_FCP_TYPE) {
552                 if (npr->initiatorFunc)
553                         ndlp->nlp_type |= NLP_FCP_INITIATOR;
554                 if (npr->targetFunc)
555                         ndlp->nlp_type |= NLP_FCP_TARGET;
556                 if (npr->Retry)
557                         ndlp->nlp_fcp_info |= NLP_FCP_2_DEVICE;
558         }
559         if (rport) {
560                 /* We need to update the rport role values */
561                 roles = FC_RPORT_ROLE_UNKNOWN;
562                 if (ndlp->nlp_type & NLP_FCP_INITIATOR)
563                         roles |= FC_RPORT_ROLE_FCP_INITIATOR;
564                 if (ndlp->nlp_type & NLP_FCP_TARGET)
565                         roles |= FC_RPORT_ROLE_FCP_TARGET;
566
567                 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
568                         "rport rolechg:   role:x%x did:x%x flg:x%x",
569                         roles, ndlp->nlp_DID, ndlp->nlp_flag);
570
571                 fc_remote_port_rolechg(rport, roles);
572         }
573 }
574
575 static uint32_t
576 lpfc_disc_set_adisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
577 {
578         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
579
580         if (!ndlp->nlp_rpi) {
581                 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
582                 return 0;
583         }
584
585         if (!(vport->fc_flag & FC_PT2PT)) {
586                 /* Check config parameter use-adisc or FCP-2 */
587                 if ((vport->cfg_use_adisc && (vport->fc_flag & FC_RSCN_MODE)) ||
588                     ndlp->nlp_fcp_info & NLP_FCP_2_DEVICE) {
589                         spin_lock_irq(shost->host_lock);
590                         ndlp->nlp_flag |= NLP_NPR_ADISC;
591                         spin_unlock_irq(shost->host_lock);
592                         return 1;
593                 }
594         }
595         ndlp->nlp_flag &= ~NLP_NPR_ADISC;
596         lpfc_unreg_rpi(vport, ndlp);
597         return 0;
598 }
599
600 static uint32_t
601 lpfc_disc_illegal(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
602                   void *arg, uint32_t evt)
603 {
604         lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
605                          "0271 Illegal State Transition: node x%x "
606                          "event x%x, state x%x Data: x%x x%x\n",
607                          ndlp->nlp_DID, evt, ndlp->nlp_state, ndlp->nlp_rpi,
608                          ndlp->nlp_flag);
609         return ndlp->nlp_state;
610 }
611
612 static uint32_t
613 lpfc_cmpl_plogi_illegal(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
614                   void *arg, uint32_t evt)
615 {
616         /* This transition is only legal if we previously
617          * rcv'ed a PLOGI. Since we don't want 2 discovery threads
618          * working on the same NPortID, do nothing for this thread
619          * to stop it.
620          */
621         if (!(ndlp->nlp_flag & NLP_RCV_PLOGI)) {
622                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
623                          "0272 Illegal State Transition: node x%x "
624                          "event x%x, state x%x Data: x%x x%x\n",
625                          ndlp->nlp_DID, evt, ndlp->nlp_state, ndlp->nlp_rpi,
626                          ndlp->nlp_flag);
627         }
628         return ndlp->nlp_state;
629 }
630
631 /* Start of Discovery State Machine routines */
632
633 static uint32_t
634 lpfc_rcv_plogi_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
635                            void *arg, uint32_t evt)
636 {
637         struct lpfc_iocbq *cmdiocb;
638
639         cmdiocb = (struct lpfc_iocbq *) arg;
640
641         if (lpfc_rcv_plogi(vport, ndlp, cmdiocb)) {
642                 return ndlp->nlp_state;
643         }
644         return NLP_STE_FREED_NODE;
645 }
646
647 static uint32_t
648 lpfc_rcv_els_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
649                          void *arg, uint32_t evt)
650 {
651         lpfc_issue_els_logo(vport, ndlp, 0);
652         return ndlp->nlp_state;
653 }
654
655 static uint32_t
656 lpfc_rcv_logo_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
657                           void *arg, uint32_t evt)
658 {
659         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
660         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
661
662         spin_lock_irq(shost->host_lock);
663         ndlp->nlp_flag |= NLP_LOGO_ACC;
664         spin_unlock_irq(shost->host_lock);
665         lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
666
667         return ndlp->nlp_state;
668 }
669
670 static uint32_t
671 lpfc_cmpl_logo_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
672                            void *arg, uint32_t evt)
673 {
674         return NLP_STE_FREED_NODE;
675 }
676
677 static uint32_t
678 lpfc_device_rm_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
679                            void *arg, uint32_t evt)
680 {
681         return NLP_STE_FREED_NODE;
682 }
683
684 static uint32_t
685 lpfc_rcv_plogi_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
686                            void *arg, uint32_t evt)
687 {
688         struct Scsi_Host   *shost = lpfc_shost_from_vport(vport);
689         struct lpfc_hba   *phba = vport->phba;
690         struct lpfc_iocbq *cmdiocb = arg;
691         struct lpfc_dmabuf *pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
692         uint32_t *lp = (uint32_t *) pcmd->virt;
693         struct serv_parm *sp = (struct serv_parm *) (lp + 1);
694         struct ls_rjt stat;
695         int port_cmp;
696
697         memset(&stat, 0, sizeof (struct ls_rjt));
698
699         /* For a PLOGI, we only accept if our portname is less
700          * than the remote portname.
701          */
702         phba->fc_stat.elsLogiCol++;
703         port_cmp = memcmp(&vport->fc_portname, &sp->portName,
704                           sizeof(struct lpfc_name));
705
706         if (port_cmp >= 0) {
707                 /* Reject this request because the remote node will accept
708                    ours */
709                 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
710                 stat.un.b.lsRjtRsnCodeExp = LSEXP_CMD_IN_PROGRESS;
711                 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
712                         NULL);
713         } else {
714                 if (lpfc_rcv_plogi(vport, ndlp, cmdiocb) &&
715                     (ndlp->nlp_flag & NLP_NPR_2B_DISC) &&
716                     (vport->num_disc_nodes)) {
717                         spin_lock_irq(shost->host_lock);
718                         ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
719                         spin_unlock_irq(shost->host_lock);
720                         /* Check if there are more PLOGIs to be sent */
721                         lpfc_more_plogi(vport);
722                         if (vport->num_disc_nodes == 0) {
723                                 spin_lock_irq(shost->host_lock);
724                                 vport->fc_flag &= ~FC_NDISC_ACTIVE;
725                                 spin_unlock_irq(shost->host_lock);
726                                 lpfc_can_disctmo(vport);
727                                 lpfc_end_rscn(vport);
728                         }
729                 }
730         } /* If our portname was less */
731
732         return ndlp->nlp_state;
733 }
734
735 static uint32_t
736 lpfc_rcv_prli_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
737                           void *arg, uint32_t evt)
738 {
739         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
740         struct ls_rjt     stat;
741
742         memset(&stat, 0, sizeof (struct ls_rjt));
743         stat.un.b.lsRjtRsnCode = LSRJT_LOGICAL_BSY;
744         stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
745         lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
746         return ndlp->nlp_state;
747 }
748
749 static uint32_t
750 lpfc_rcv_logo_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
751                           void *arg, uint32_t evt)
752 {
753         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
754
755                                 /* software abort outstanding PLOGI */
756         lpfc_els_abort(vport->phba, ndlp);
757
758         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
759         return ndlp->nlp_state;
760 }
761
762 static uint32_t
763 lpfc_rcv_els_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
764                          void *arg, uint32_t evt)
765 {
766         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
767         struct lpfc_hba   *phba = vport->phba;
768         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
769
770         /* software abort outstanding PLOGI */
771         lpfc_els_abort(phba, ndlp);
772
773         if (evt == NLP_EVT_RCV_LOGO) {
774                 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
775         } else {
776                 lpfc_issue_els_logo(vport, ndlp, 0);
777         }
778
779         /* Put ndlp in npr state set plogi timer for 1 sec */
780         mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ * 1);
781         spin_lock_irq(shost->host_lock);
782         ndlp->nlp_flag |= NLP_DELAY_TMO;
783         spin_unlock_irq(shost->host_lock);
784         ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
785         ndlp->nlp_prev_state = NLP_STE_PLOGI_ISSUE;
786         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
787
788         return ndlp->nlp_state;
789 }
790
791 static uint32_t
792 lpfc_cmpl_plogi_plogi_issue(struct lpfc_vport *vport,
793                             struct lpfc_nodelist *ndlp,
794                             void *arg,
795                             uint32_t evt)
796 {
797         struct lpfc_hba    *phba = vport->phba;
798         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
799         struct lpfc_iocbq  *cmdiocb, *rspiocb;
800         struct lpfc_dmabuf *pcmd, *prsp, *mp;
801         uint32_t *lp;
802         IOCB_t *irsp;
803         struct serv_parm *sp;
804         LPFC_MBOXQ_t *mbox;
805
806         cmdiocb = (struct lpfc_iocbq *) arg;
807         rspiocb = cmdiocb->context_un.rsp_iocb;
808
809         if (ndlp->nlp_flag & NLP_ACC_REGLOGIN) {
810                 /* Recovery from PLOGI collision logic */
811                 return ndlp->nlp_state;
812         }
813
814         irsp = &rspiocb->iocb;
815
816         if (irsp->ulpStatus)
817                 goto out;
818
819         pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
820
821         prsp = list_get_first(&pcmd->list, struct lpfc_dmabuf, list);
822
823         lp = (uint32_t *) prsp->virt;
824         sp = (struct serv_parm *) ((uint8_t *) lp + sizeof (uint32_t));
825
826         /* Some switches have FDMI servers returning 0 for WWN */
827         if ((ndlp->nlp_DID != FDMI_DID) &&
828                 (wwn_to_u64(sp->portName.u.wwn) == 0 ||
829                 wwn_to_u64(sp->nodeName.u.wwn) == 0)) {
830                 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
831                                  "0142 PLOGI RSP: Invalid WWN.\n");
832                 goto out;
833         }
834         if (!lpfc_check_sparm(vport, ndlp, sp, CLASS3))
835                 goto out;
836         /* PLOGI chkparm OK */
837         lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
838                          "0121 PLOGI chkparm OK Data: x%x x%x x%x x%x\n",
839                          ndlp->nlp_DID, ndlp->nlp_state,
840                          ndlp->nlp_flag, ndlp->nlp_rpi);
841         if (vport->cfg_fcp_class == 2 && (sp->cls2.classValid))
842                 ndlp->nlp_fcp_info |= CLASS2;
843         else
844                 ndlp->nlp_fcp_info |= CLASS3;
845
846         ndlp->nlp_class_sup = 0;
847         if (sp->cls1.classValid)
848                 ndlp->nlp_class_sup |= FC_COS_CLASS1;
849         if (sp->cls2.classValid)
850                 ndlp->nlp_class_sup |= FC_COS_CLASS2;
851         if (sp->cls3.classValid)
852                 ndlp->nlp_class_sup |= FC_COS_CLASS3;
853         if (sp->cls4.classValid)
854                 ndlp->nlp_class_sup |= FC_COS_CLASS4;
855         ndlp->nlp_maxframe =
856                 ((sp->cmn.bbRcvSizeMsb & 0x0F) << 8) | sp->cmn.bbRcvSizeLsb;
857
858         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
859         if (!mbox) {
860                 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
861                         "0133 PLOGI: no memory for reg_login "
862                         "Data: x%x x%x x%x x%x\n",
863                         ndlp->nlp_DID, ndlp->nlp_state,
864                         ndlp->nlp_flag, ndlp->nlp_rpi);
865                 goto out;
866         }
867
868         lpfc_unreg_rpi(vport, ndlp);
869
870         if (lpfc_reg_login(phba, vport->vpi, irsp->un.elsreq64.remoteID,
871                            (uint8_t *) sp, mbox, 0) == 0) {
872                 switch (ndlp->nlp_DID) {
873                 case NameServer_DID:
874                         mbox->mbox_cmpl = lpfc_mbx_cmpl_ns_reg_login;
875                         break;
876                 case FDMI_DID:
877                         mbox->mbox_cmpl = lpfc_mbx_cmpl_fdmi_reg_login;
878                         break;
879                 default:
880                         mbox->mbox_cmpl = lpfc_mbx_cmpl_reg_login;
881                 }
882                 mbox->context2 = lpfc_nlp_get(ndlp);
883                 mbox->vport = vport;
884                 if (lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT)
885                     != MBX_NOT_FINISHED) {
886                         lpfc_nlp_set_state(vport, ndlp,
887                                            NLP_STE_REG_LOGIN_ISSUE);
888                         return ndlp->nlp_state;
889                 }
890                 /* decrement node reference count to the failed mbox
891                  * command
892                  */
893                 lpfc_nlp_put(ndlp);
894                 mp = (struct lpfc_dmabuf *) mbox->context1;
895                 lpfc_mbuf_free(phba, mp->virt, mp->phys);
896                 kfree(mp);
897                 mempool_free(mbox, phba->mbox_mem_pool);
898
899                 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
900                                  "0134 PLOGI: cannot issue reg_login "
901                                  "Data: x%x x%x x%x x%x\n",
902                                  ndlp->nlp_DID, ndlp->nlp_state,
903                                  ndlp->nlp_flag, ndlp->nlp_rpi);
904         } else {
905                 mempool_free(mbox, phba->mbox_mem_pool);
906
907                 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
908                                  "0135 PLOGI: cannot format reg_login "
909                                  "Data: x%x x%x x%x x%x\n",
910                                  ndlp->nlp_DID, ndlp->nlp_state,
911                                  ndlp->nlp_flag, ndlp->nlp_rpi);
912         }
913
914
915 out:
916         if (ndlp->nlp_DID == NameServer_DID) {
917                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
918                 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
919                                  "0261 Cannot Register NameServer login\n");
920         }
921
922         spin_lock_irq(shost->host_lock);
923         ndlp->nlp_flag |= NLP_DEFER_RM;
924         spin_unlock_irq(shost->host_lock);
925         return NLP_STE_FREED_NODE;
926 }
927
928 static uint32_t
929 lpfc_cmpl_logo_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
930                            void *arg, uint32_t evt)
931 {
932         return ndlp->nlp_state;
933 }
934
935 static uint32_t
936 lpfc_cmpl_reglogin_plogi_issue(struct lpfc_vport *vport,
937         struct lpfc_nodelist *ndlp, void *arg, uint32_t evt)
938 {
939         return ndlp->nlp_state;
940 }
941
942 static uint32_t
943 lpfc_device_rm_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
944                            void *arg, uint32_t evt)
945 {
946         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
947
948         if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
949                 spin_lock_irq(shost->host_lock);
950                 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
951                 spin_unlock_irq(shost->host_lock);
952                 return ndlp->nlp_state;
953         } else {
954                 /* software abort outstanding PLOGI */
955                 lpfc_els_abort(vport->phba, ndlp);
956
957                 lpfc_drop_node(vport, ndlp);
958                 return NLP_STE_FREED_NODE;
959         }
960 }
961
962 static uint32_t
963 lpfc_device_recov_plogi_issue(struct lpfc_vport *vport,
964                               struct lpfc_nodelist *ndlp,
965                               void *arg,
966                               uint32_t evt)
967 {
968         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
969         struct lpfc_hba  *phba = vport->phba;
970
971         /* Don't do anything that will mess up processing of the
972          * previous RSCN.
973          */
974         if (vport->fc_flag & FC_RSCN_DEFERRED)
975                 return ndlp->nlp_state;
976
977         /* software abort outstanding PLOGI */
978         lpfc_els_abort(phba, ndlp);
979
980         ndlp->nlp_prev_state = NLP_STE_PLOGI_ISSUE;
981         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
982         spin_lock_irq(shost->host_lock);
983         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
984         spin_unlock_irq(shost->host_lock);
985
986         return ndlp->nlp_state;
987 }
988
989 static uint32_t
990 lpfc_rcv_plogi_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
991                            void *arg, uint32_t evt)
992 {
993         struct Scsi_Host   *shost = lpfc_shost_from_vport(vport);
994         struct lpfc_hba   *phba = vport->phba;
995         struct lpfc_iocbq *cmdiocb;
996
997         /* software abort outstanding ADISC */
998         lpfc_els_abort(phba, ndlp);
999
1000         cmdiocb = (struct lpfc_iocbq *) arg;
1001
1002         if (lpfc_rcv_plogi(vport, ndlp, cmdiocb)) {
1003                 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1004                         spin_lock_irq(shost->host_lock);
1005                         ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
1006                         spin_unlock_irq(shost->host_lock);
1007                         if (vport->num_disc_nodes)
1008                                 lpfc_more_adisc(vport);
1009                 }
1010                 return ndlp->nlp_state;
1011         }
1012         ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1013         lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
1014         lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
1015
1016         return ndlp->nlp_state;
1017 }
1018
1019 static uint32_t
1020 lpfc_rcv_prli_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1021                           void *arg, uint32_t evt)
1022 {
1023         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1024
1025         lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1026         return ndlp->nlp_state;
1027 }
1028
1029 static uint32_t
1030 lpfc_rcv_logo_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1031                           void *arg, uint32_t evt)
1032 {
1033         struct lpfc_hba *phba = vport->phba;
1034         struct lpfc_iocbq *cmdiocb;
1035
1036         cmdiocb = (struct lpfc_iocbq *) arg;
1037
1038         /* software abort outstanding ADISC */
1039         lpfc_els_abort(phba, ndlp);
1040
1041         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1042         return ndlp->nlp_state;
1043 }
1044
1045 static uint32_t
1046 lpfc_rcv_padisc_adisc_issue(struct lpfc_vport *vport,
1047                             struct lpfc_nodelist *ndlp,
1048                             void *arg, uint32_t evt)
1049 {
1050         struct lpfc_iocbq *cmdiocb;
1051
1052         cmdiocb = (struct lpfc_iocbq *) arg;
1053
1054         lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1055         return ndlp->nlp_state;
1056 }
1057
1058 static uint32_t
1059 lpfc_rcv_prlo_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1060                           void *arg, uint32_t evt)
1061 {
1062         struct lpfc_iocbq *cmdiocb;
1063
1064         cmdiocb = (struct lpfc_iocbq *) arg;
1065
1066         /* Treat like rcv logo */
1067         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_PRLO);
1068         return ndlp->nlp_state;
1069 }
1070
1071 static uint32_t
1072 lpfc_cmpl_adisc_adisc_issue(struct lpfc_vport *vport,
1073                             struct lpfc_nodelist *ndlp,
1074                             void *arg, uint32_t evt)
1075 {
1076         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
1077         struct lpfc_hba   *phba = vport->phba;
1078         struct lpfc_iocbq *cmdiocb, *rspiocb;
1079         IOCB_t *irsp;
1080         ADISC *ap;
1081
1082         cmdiocb = (struct lpfc_iocbq *) arg;
1083         rspiocb = cmdiocb->context_un.rsp_iocb;
1084
1085         ap = (ADISC *)lpfc_check_elscmpl_iocb(phba, cmdiocb, rspiocb);
1086         irsp = &rspiocb->iocb;
1087
1088         if ((irsp->ulpStatus) ||
1089             (!lpfc_check_adisc(vport, ndlp, &ap->nodeName, &ap->portName))) {
1090                 /* 1 sec timeout */
1091                 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ);
1092                 spin_lock_irq(shost->host_lock);
1093                 ndlp->nlp_flag |= NLP_DELAY_TMO;
1094                 spin_unlock_irq(shost->host_lock);
1095                 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
1096
1097                 memset(&ndlp->nlp_nodename, 0, sizeof(struct lpfc_name));
1098                 memset(&ndlp->nlp_portname, 0, sizeof(struct lpfc_name));
1099
1100                 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1101                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1102                 lpfc_unreg_rpi(vport, ndlp);
1103                 return ndlp->nlp_state;
1104         }
1105
1106         if (ndlp->nlp_type & NLP_FCP_TARGET) {
1107                 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1108                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_MAPPED_NODE);
1109         } else {
1110                 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1111                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1112         }
1113         return ndlp->nlp_state;
1114 }
1115
1116 static uint32_t
1117 lpfc_device_rm_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1118                            void *arg, uint32_t evt)
1119 {
1120         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1121
1122         if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1123                 spin_lock_irq(shost->host_lock);
1124                 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1125                 spin_unlock_irq(shost->host_lock);
1126                 return ndlp->nlp_state;
1127         } else {
1128                 /* software abort outstanding ADISC */
1129                 lpfc_els_abort(vport->phba, ndlp);
1130
1131                 lpfc_drop_node(vport, ndlp);
1132                 return NLP_STE_FREED_NODE;
1133         }
1134 }
1135
1136 static uint32_t
1137 lpfc_device_recov_adisc_issue(struct lpfc_vport *vport,
1138                               struct lpfc_nodelist *ndlp,
1139                               void *arg,
1140                               uint32_t evt)
1141 {
1142         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1143         struct lpfc_hba  *phba = vport->phba;
1144
1145         /* Don't do anything that will mess up processing of the
1146          * previous RSCN.
1147          */
1148         if (vport->fc_flag & FC_RSCN_DEFERRED)
1149                 return ndlp->nlp_state;
1150
1151         /* software abort outstanding ADISC */
1152         lpfc_els_abort(phba, ndlp);
1153
1154         ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1155         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1156         spin_lock_irq(shost->host_lock);
1157         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1158         spin_unlock_irq(shost->host_lock);
1159         lpfc_disc_set_adisc(vport, ndlp);
1160         return ndlp->nlp_state;
1161 }
1162
1163 static uint32_t
1164 lpfc_rcv_plogi_reglogin_issue(struct lpfc_vport *vport,
1165                               struct lpfc_nodelist *ndlp,
1166                               void *arg,
1167                               uint32_t evt)
1168 {
1169         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1170
1171         lpfc_rcv_plogi(vport, ndlp, cmdiocb);
1172         return ndlp->nlp_state;
1173 }
1174
1175 static uint32_t
1176 lpfc_rcv_prli_reglogin_issue(struct lpfc_vport *vport,
1177                              struct lpfc_nodelist *ndlp,
1178                              void *arg,
1179                              uint32_t evt)
1180 {
1181         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1182
1183         lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1184         return ndlp->nlp_state;
1185 }
1186
1187 static uint32_t
1188 lpfc_rcv_logo_reglogin_issue(struct lpfc_vport *vport,
1189                              struct lpfc_nodelist *ndlp,
1190                              void *arg,
1191                              uint32_t evt)
1192 {
1193         struct lpfc_hba   *phba = vport->phba;
1194         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1195         LPFC_MBOXQ_t      *mb;
1196         LPFC_MBOXQ_t      *nextmb;
1197         struct lpfc_dmabuf *mp;
1198
1199         cmdiocb = (struct lpfc_iocbq *) arg;
1200
1201         /* cleanup any ndlp on mbox q waiting for reglogin cmpl */
1202         if ((mb = phba->sli.mbox_active)) {
1203                 if ((mb->mb.mbxCommand == MBX_REG_LOGIN64) &&
1204                    (ndlp == (struct lpfc_nodelist *) mb->context2)) {
1205                         lpfc_nlp_put(ndlp);
1206                         mb->context2 = NULL;
1207                         mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
1208                 }
1209         }
1210
1211         spin_lock_irq(&phba->hbalock);
1212         list_for_each_entry_safe(mb, nextmb, &phba->sli.mboxq, list) {
1213                 if ((mb->mb.mbxCommand == MBX_REG_LOGIN64) &&
1214                    (ndlp == (struct lpfc_nodelist *) mb->context2)) {
1215                         mp = (struct lpfc_dmabuf *) (mb->context1);
1216                         if (mp) {
1217                                 __lpfc_mbuf_free(phba, mp->virt, mp->phys);
1218                                 kfree(mp);
1219                         }
1220                         lpfc_nlp_put(ndlp);
1221                         list_del(&mb->list);
1222                         mempool_free(mb, phba->mbox_mem_pool);
1223                 }
1224         }
1225         spin_unlock_irq(&phba->hbalock);
1226
1227         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1228         return ndlp->nlp_state;
1229 }
1230
1231 static uint32_t
1232 lpfc_rcv_padisc_reglogin_issue(struct lpfc_vport *vport,
1233                                struct lpfc_nodelist *ndlp,
1234                                void *arg,
1235                                uint32_t evt)
1236 {
1237         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1238
1239         lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1240         return ndlp->nlp_state;
1241 }
1242
1243 static uint32_t
1244 lpfc_rcv_prlo_reglogin_issue(struct lpfc_vport *vport,
1245                              struct lpfc_nodelist *ndlp,
1246                              void *arg,
1247                              uint32_t evt)
1248 {
1249         struct lpfc_iocbq *cmdiocb;
1250
1251         cmdiocb = (struct lpfc_iocbq *) arg;
1252         lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
1253         return ndlp->nlp_state;
1254 }
1255
1256 static uint32_t
1257 lpfc_cmpl_reglogin_reglogin_issue(struct lpfc_vport *vport,
1258                                   struct lpfc_nodelist *ndlp,
1259                                   void *arg,
1260                                   uint32_t evt)
1261 {
1262         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1263         LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg;
1264         MAILBOX_t *mb = &pmb->mb;
1265         uint32_t did  = mb->un.varWords[1];
1266
1267         if (mb->mbxStatus) {
1268                 /* RegLogin failed */
1269                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
1270                                 "0246 RegLogin failed Data: x%x x%x x%x\n",
1271                                 did, mb->mbxStatus, vport->port_state);
1272                 /*
1273                  * If RegLogin failed due to lack of HBA resources do not
1274                  * retry discovery.
1275                  */
1276                 if (mb->mbxStatus == MBXERR_RPI_FULL) {
1277                         ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1278                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1279                         return ndlp->nlp_state;
1280                 }
1281
1282                 /* Put ndlp in npr state set plogi timer for 1 sec */
1283                 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ * 1);
1284                 spin_lock_irq(shost->host_lock);
1285                 ndlp->nlp_flag |= NLP_DELAY_TMO;
1286                 spin_unlock_irq(shost->host_lock);
1287                 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
1288
1289                 lpfc_issue_els_logo(vport, ndlp, 0);
1290                 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1291                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1292                 return ndlp->nlp_state;
1293         }
1294
1295         ndlp->nlp_rpi = mb->un.varWords[0];
1296
1297         /* Only if we are not a fabric nport do we issue PRLI */
1298         if (!(ndlp->nlp_type & NLP_FABRIC)) {
1299                 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1300                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PRLI_ISSUE);
1301                 lpfc_issue_els_prli(vport, ndlp, 0);
1302         } else {
1303                 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1304                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1305         }
1306         return ndlp->nlp_state;
1307 }
1308
1309 static uint32_t
1310 lpfc_device_rm_reglogin_issue(struct lpfc_vport *vport,
1311                               struct lpfc_nodelist *ndlp,
1312                               void *arg,
1313                               uint32_t evt)
1314 {
1315         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1316
1317         if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1318                 spin_lock_irq(shost->host_lock);
1319                 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1320                 spin_unlock_irq(shost->host_lock);
1321                 return ndlp->nlp_state;
1322         } else {
1323                 lpfc_drop_node(vport, ndlp);
1324                 return NLP_STE_FREED_NODE;
1325         }
1326 }
1327
1328 static uint32_t
1329 lpfc_device_recov_reglogin_issue(struct lpfc_vport *vport,
1330                                  struct lpfc_nodelist *ndlp,
1331                                  void *arg,
1332                                  uint32_t evt)
1333 {
1334         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1335
1336         /* Don't do anything that will mess up processing of the
1337          * previous RSCN.
1338          */
1339         if (vport->fc_flag & FC_RSCN_DEFERRED)
1340                 return ndlp->nlp_state;
1341
1342         ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1343         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1344         spin_lock_irq(shost->host_lock);
1345         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1346         spin_unlock_irq(shost->host_lock);
1347         lpfc_disc_set_adisc(vport, ndlp);
1348         return ndlp->nlp_state;
1349 }
1350
1351 static uint32_t
1352 lpfc_rcv_plogi_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1353                           void *arg, uint32_t evt)
1354 {
1355         struct lpfc_iocbq *cmdiocb;
1356
1357         cmdiocb = (struct lpfc_iocbq *) arg;
1358
1359         lpfc_rcv_plogi(vport, ndlp, cmdiocb);
1360         return ndlp->nlp_state;
1361 }
1362
1363 static uint32_t
1364 lpfc_rcv_prli_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1365                          void *arg, uint32_t evt)
1366 {
1367         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1368
1369         lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1370         return ndlp->nlp_state;
1371 }
1372
1373 static uint32_t
1374 lpfc_rcv_logo_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1375                          void *arg, uint32_t evt)
1376 {
1377         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1378
1379         /* Software abort outstanding PRLI before sending acc */
1380         lpfc_els_abort(vport->phba, ndlp);
1381
1382         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1383         return ndlp->nlp_state;
1384 }
1385
1386 static uint32_t
1387 lpfc_rcv_padisc_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1388                            void *arg, uint32_t evt)
1389 {
1390         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1391
1392         lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1393         return ndlp->nlp_state;
1394 }
1395
1396 /* This routine is envoked when we rcv a PRLO request from a nport
1397  * we are logged into.  We should send back a PRLO rsp setting the
1398  * appropriate bits.
1399  * NEXT STATE = PRLI_ISSUE
1400  */
1401 static uint32_t
1402 lpfc_rcv_prlo_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1403                          void *arg, uint32_t evt)
1404 {
1405         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1406
1407         lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
1408         return ndlp->nlp_state;
1409 }
1410
1411 static uint32_t
1412 lpfc_cmpl_prli_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1413                           void *arg, uint32_t evt)
1414 {
1415         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1416         struct lpfc_iocbq *cmdiocb, *rspiocb;
1417         struct lpfc_hba   *phba = vport->phba;
1418         IOCB_t *irsp;
1419         PRLI *npr;
1420
1421         cmdiocb = (struct lpfc_iocbq *) arg;
1422         rspiocb = cmdiocb->context_un.rsp_iocb;
1423         npr = (PRLI *)lpfc_check_elscmpl_iocb(phba, cmdiocb, rspiocb);
1424
1425         irsp = &rspiocb->iocb;
1426         if (irsp->ulpStatus) {
1427                 if ((vport->port_type == LPFC_NPIV_PORT) &&
1428                     vport->cfg_restrict_login) {
1429                         goto out;
1430                 }
1431                 ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
1432                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1433                 return ndlp->nlp_state;
1434         }
1435
1436         /* Check out PRLI rsp */
1437         ndlp->nlp_type &= ~(NLP_FCP_TARGET | NLP_FCP_INITIATOR);
1438         ndlp->nlp_fcp_info &= ~NLP_FCP_2_DEVICE;
1439         if ((npr->acceptRspCode == PRLI_REQ_EXECUTED) &&
1440             (npr->prliType == PRLI_FCP_TYPE)) {
1441                 if (npr->initiatorFunc)
1442                         ndlp->nlp_type |= NLP_FCP_INITIATOR;
1443                 if (npr->targetFunc)
1444                         ndlp->nlp_type |= NLP_FCP_TARGET;
1445                 if (npr->Retry)
1446                         ndlp->nlp_fcp_info |= NLP_FCP_2_DEVICE;
1447         }
1448         if (!(ndlp->nlp_type & NLP_FCP_TARGET) &&
1449             (vport->port_type == LPFC_NPIV_PORT) &&
1450              vport->cfg_restrict_login) {
1451 out:
1452                 spin_lock_irq(shost->host_lock);
1453                 ndlp->nlp_flag |= NLP_TARGET_REMOVE;
1454                 spin_unlock_irq(shost->host_lock);
1455                 lpfc_issue_els_logo(vport, ndlp, 0);
1456
1457                 ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
1458                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1459                 return ndlp->nlp_state;
1460         }
1461
1462         ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
1463         if (ndlp->nlp_type & NLP_FCP_TARGET)
1464                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_MAPPED_NODE);
1465         else
1466                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1467         return ndlp->nlp_state;
1468 }
1469
1470 /*! lpfc_device_rm_prli_issue
1471  *
1472  * \pre
1473  * \post
1474  * \param   phba
1475  * \param   ndlp
1476  * \param   arg
1477  * \param   evt
1478  * \return  uint32_t
1479  *
1480  * \b Description:
1481  *    This routine is envoked when we a request to remove a nport we are in the
1482  *    process of PRLIing. We should software abort outstanding prli, unreg
1483  *    login, send a logout. We will change node state to UNUSED_NODE, put it
1484  *    on plogi list so it can be freed when LOGO completes.
1485  *
1486  */
1487
1488 static uint32_t
1489 lpfc_device_rm_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1490                           void *arg, uint32_t evt)
1491 {
1492         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1493
1494         if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1495                 spin_lock_irq(shost->host_lock);
1496                 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1497                 spin_unlock_irq(shost->host_lock);
1498                 return ndlp->nlp_state;
1499         } else {
1500                 /* software abort outstanding PLOGI */
1501                 lpfc_els_abort(vport->phba, ndlp);
1502
1503                 lpfc_drop_node(vport, ndlp);
1504                 return NLP_STE_FREED_NODE;
1505         }
1506 }
1507
1508
1509 /*! lpfc_device_recov_prli_issue
1510  *
1511  * \pre
1512  * \post
1513  * \param   phba
1514  * \param   ndlp
1515  * \param   arg
1516  * \param   evt
1517  * \return  uint32_t
1518  *
1519  * \b Description:
1520  *    The routine is envoked when the state of a device is unknown, like
1521  *    during a link down. We should remove the nodelist entry from the
1522  *    unmapped list, issue a UNREG_LOGIN, do a software abort of the
1523  *    outstanding PRLI command, then free the node entry.
1524  */
1525 static uint32_t
1526 lpfc_device_recov_prli_issue(struct lpfc_vport *vport,
1527                              struct lpfc_nodelist *ndlp,
1528                              void *arg,
1529                              uint32_t evt)
1530 {
1531         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1532         struct lpfc_hba  *phba = vport->phba;
1533
1534         /* Don't do anything that will mess up processing of the
1535          * previous RSCN.
1536          */
1537         if (vport->fc_flag & FC_RSCN_DEFERRED)
1538                 return ndlp->nlp_state;
1539
1540         /* software abort outstanding PRLI */
1541         lpfc_els_abort(phba, ndlp);
1542
1543         ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
1544         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1545         spin_lock_irq(shost->host_lock);
1546         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1547         spin_unlock_irq(shost->host_lock);
1548         lpfc_disc_set_adisc(vport, ndlp);
1549         return ndlp->nlp_state;
1550 }
1551
1552 static uint32_t
1553 lpfc_rcv_plogi_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1554                           void *arg, uint32_t evt)
1555 {
1556         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1557
1558         lpfc_rcv_plogi(vport, ndlp, cmdiocb);
1559         return ndlp->nlp_state;
1560 }
1561
1562 static uint32_t
1563 lpfc_rcv_prli_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1564                          void *arg, uint32_t evt)
1565 {
1566         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1567
1568         lpfc_rcv_prli(vport, ndlp, cmdiocb);
1569         lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1570         return ndlp->nlp_state;
1571 }
1572
1573 static uint32_t
1574 lpfc_rcv_logo_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1575                          void *arg, uint32_t evt)
1576 {
1577         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1578
1579         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1580         return ndlp->nlp_state;
1581 }
1582
1583 static uint32_t
1584 lpfc_rcv_padisc_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1585                            void *arg, uint32_t evt)
1586 {
1587         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1588
1589         lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1590         return ndlp->nlp_state;
1591 }
1592
1593 static uint32_t
1594 lpfc_rcv_prlo_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1595                          void *arg, uint32_t evt)
1596 {
1597         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1598
1599         lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
1600         return ndlp->nlp_state;
1601 }
1602
1603 static uint32_t
1604 lpfc_device_recov_unmap_node(struct lpfc_vport *vport,
1605                              struct lpfc_nodelist *ndlp,
1606                              void *arg,
1607                              uint32_t evt)
1608 {
1609         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1610
1611         ndlp->nlp_prev_state = NLP_STE_UNMAPPED_NODE;
1612         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1613         spin_lock_irq(shost->host_lock);
1614         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1615         spin_unlock_irq(shost->host_lock);
1616         lpfc_disc_set_adisc(vport, ndlp);
1617
1618         return ndlp->nlp_state;
1619 }
1620
1621 static uint32_t
1622 lpfc_rcv_plogi_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1623                            void *arg, uint32_t evt)
1624 {
1625         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1626
1627         lpfc_rcv_plogi(vport, ndlp, cmdiocb);
1628         return ndlp->nlp_state;
1629 }
1630
1631 static uint32_t
1632 lpfc_rcv_prli_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1633                           void *arg, uint32_t evt)
1634 {
1635         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1636
1637         lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1638         return ndlp->nlp_state;
1639 }
1640
1641 static uint32_t
1642 lpfc_rcv_logo_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1643                           void *arg, uint32_t evt)
1644 {
1645         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1646
1647         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1648         return ndlp->nlp_state;
1649 }
1650
1651 static uint32_t
1652 lpfc_rcv_padisc_mapped_node(struct lpfc_vport *vport,
1653                             struct lpfc_nodelist *ndlp,
1654                             void *arg, uint32_t evt)
1655 {
1656         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1657
1658         lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1659         return ndlp->nlp_state;
1660 }
1661
1662 static uint32_t
1663 lpfc_rcv_prlo_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1664                           void *arg, uint32_t evt)
1665 {
1666         struct lpfc_hba  *phba = vport->phba;
1667         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1668
1669         /* flush the target */
1670         lpfc_sli_abort_iocb(vport, &phba->sli.ring[phba->sli.fcp_ring],
1671                             ndlp->nlp_sid, 0, LPFC_CTX_TGT);
1672
1673         /* Treat like rcv logo */
1674         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_PRLO);
1675         return ndlp->nlp_state;
1676 }
1677
1678 static uint32_t
1679 lpfc_device_recov_mapped_node(struct lpfc_vport *vport,
1680                               struct lpfc_nodelist *ndlp,
1681                               void *arg,
1682                               uint32_t evt)
1683 {
1684         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1685
1686         ndlp->nlp_prev_state = NLP_STE_MAPPED_NODE;
1687         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1688         spin_lock_irq(shost->host_lock);
1689         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1690         spin_unlock_irq(shost->host_lock);
1691         lpfc_disc_set_adisc(vport, ndlp);
1692         return ndlp->nlp_state;
1693 }
1694
1695 static uint32_t
1696 lpfc_rcv_plogi_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1697                         void *arg, uint32_t evt)
1698 {
1699         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1700         struct lpfc_iocbq *cmdiocb  = (struct lpfc_iocbq *) arg;
1701
1702         /* Ignore PLOGI if we have an outstanding LOGO */
1703         if (ndlp->nlp_flag & (NLP_LOGO_SND | NLP_LOGO_ACC))
1704                 return ndlp->nlp_state;
1705         if (lpfc_rcv_plogi(vport, ndlp, cmdiocb)) {
1706                 lpfc_cancel_retry_delay_tmo(vport, ndlp);
1707                 spin_lock_irq(shost->host_lock);
1708                 ndlp->nlp_flag &= ~(NLP_NPR_ADISC | NLP_NPR_2B_DISC);
1709                 spin_unlock_irq(shost->host_lock);
1710         } else if (!(ndlp->nlp_flag & NLP_NPR_2B_DISC)) {
1711                 /* send PLOGI immediately, move to PLOGI issue state */
1712                 if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) {
1713                         ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
1714                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
1715                         lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
1716                 }
1717         }
1718         return ndlp->nlp_state;
1719 }
1720
1721 static uint32_t
1722 lpfc_rcv_prli_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1723                        void *arg, uint32_t evt)
1724 {
1725         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
1726         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1727         struct ls_rjt     stat;
1728
1729         memset(&stat, 0, sizeof (struct ls_rjt));
1730         stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
1731         stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
1732         lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
1733
1734         if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) {
1735                 if (ndlp->nlp_flag & NLP_NPR_ADISC) {
1736                         spin_lock_irq(shost->host_lock);
1737                         ndlp->nlp_flag &= ~NLP_NPR_ADISC;
1738                         ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
1739                         spin_unlock_irq(shost->host_lock);
1740                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_ADISC_ISSUE);
1741                         lpfc_issue_els_adisc(vport, ndlp, 0);
1742                 } else {
1743                         ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
1744                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
1745                         lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
1746                 }
1747         }
1748         return ndlp->nlp_state;
1749 }
1750
1751 static uint32_t
1752 lpfc_rcv_logo_npr_node(struct lpfc_vport *vport,  struct lpfc_nodelist *ndlp,
1753                        void *arg, uint32_t evt)
1754 {
1755         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1756
1757         lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1758         return ndlp->nlp_state;
1759 }
1760
1761 static uint32_t
1762 lpfc_rcv_padisc_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1763                          void *arg, uint32_t evt)
1764 {
1765         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1766
1767         lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1768         /*
1769          * Do not start discovery if discovery is about to start
1770          * or discovery in progress for this node. Starting discovery
1771          * here will affect the counting of discovery threads.
1772          */
1773         if (!(ndlp->nlp_flag & NLP_DELAY_TMO) &&
1774             !(ndlp->nlp_flag & NLP_NPR_2B_DISC)) {
1775                 if (ndlp->nlp_flag & NLP_NPR_ADISC) {
1776                         ndlp->nlp_flag &= ~NLP_NPR_ADISC;
1777                         ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
1778                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_ADISC_ISSUE);
1779                         lpfc_issue_els_adisc(vport, ndlp, 0);
1780                 } else {
1781                         ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
1782                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
1783                         lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
1784                 }
1785         }
1786         return ndlp->nlp_state;
1787 }
1788
1789 static uint32_t
1790 lpfc_rcv_prlo_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1791                        void *arg, uint32_t evt)
1792 {
1793         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1794         struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1795
1796         spin_lock_irq(shost->host_lock);
1797         ndlp->nlp_flag |= NLP_LOGO_ACC;
1798         spin_unlock_irq(shost->host_lock);
1799
1800         lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
1801
1802         if ((ndlp->nlp_flag & NLP_DELAY_TMO) == 0) {
1803                 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ * 1);
1804                 spin_lock_irq(shost->host_lock);
1805                 ndlp->nlp_flag |= NLP_DELAY_TMO;
1806                 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
1807                 spin_unlock_irq(shost->host_lock);
1808                 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
1809         } else {
1810                 spin_lock_irq(shost->host_lock);
1811                 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
1812                 spin_unlock_irq(shost->host_lock);
1813         }
1814         return ndlp->nlp_state;
1815 }
1816
1817 static uint32_t
1818 lpfc_cmpl_plogi_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1819                          void *arg, uint32_t evt)
1820 {
1821         struct lpfc_iocbq *cmdiocb, *rspiocb;
1822         IOCB_t *irsp;
1823
1824         cmdiocb = (struct lpfc_iocbq *) arg;
1825         rspiocb = cmdiocb->context_un.rsp_iocb;
1826
1827         irsp = &rspiocb->iocb;
1828         if (irsp->ulpStatus) {
1829                 ndlp->nlp_flag |= NLP_DEFER_RM;
1830                 return NLP_STE_FREED_NODE;
1831         }
1832         return ndlp->nlp_state;
1833 }
1834
1835 static uint32_t
1836 lpfc_cmpl_prli_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1837                         void *arg, uint32_t evt)
1838 {
1839         struct lpfc_iocbq *cmdiocb, *rspiocb;
1840         IOCB_t *irsp;
1841
1842         cmdiocb = (struct lpfc_iocbq *) arg;
1843         rspiocb = cmdiocb->context_un.rsp_iocb;
1844
1845         irsp = &rspiocb->iocb;
1846         if (irsp->ulpStatus && (ndlp->nlp_flag & NLP_NODEV_REMOVE)) {
1847                 lpfc_drop_node(vport, ndlp);
1848                 return NLP_STE_FREED_NODE;
1849         }
1850         return ndlp->nlp_state;
1851 }
1852
1853 static uint32_t
1854 lpfc_cmpl_logo_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1855                         void *arg, uint32_t evt)
1856 {
1857         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1858         if (ndlp->nlp_DID == Fabric_DID) {
1859                 spin_lock_irq(shost->host_lock);
1860                 vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP);
1861                 spin_unlock_irq(shost->host_lock);
1862         }
1863         lpfc_unreg_rpi(vport, ndlp);
1864         return ndlp->nlp_state;
1865 }
1866
1867 static uint32_t
1868 lpfc_cmpl_adisc_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1869                          void *arg, uint32_t evt)
1870 {
1871         struct lpfc_iocbq *cmdiocb, *rspiocb;
1872         IOCB_t *irsp;
1873
1874         cmdiocb = (struct lpfc_iocbq *) arg;
1875         rspiocb = cmdiocb->context_un.rsp_iocb;
1876
1877         irsp = &rspiocb->iocb;
1878         if (irsp->ulpStatus && (ndlp->nlp_flag & NLP_NODEV_REMOVE)) {
1879                 lpfc_drop_node(vport, ndlp);
1880                 return NLP_STE_FREED_NODE;
1881         }
1882         return ndlp->nlp_state;
1883 }
1884
1885 static uint32_t
1886 lpfc_cmpl_reglogin_npr_node(struct lpfc_vport *vport,
1887                             struct lpfc_nodelist *ndlp,
1888                             void *arg, uint32_t evt)
1889 {
1890         LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg;
1891         MAILBOX_t    *mb = &pmb->mb;
1892
1893         if (!mb->mbxStatus)
1894                 ndlp->nlp_rpi = mb->un.varWords[0];
1895         else {
1896                 if (ndlp->nlp_flag & NLP_NODEV_REMOVE) {
1897                         lpfc_drop_node(vport, ndlp);
1898                         return NLP_STE_FREED_NODE;
1899                 }
1900         }
1901         return ndlp->nlp_state;
1902 }
1903
1904 static uint32_t
1905 lpfc_device_rm_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1906                         void *arg, uint32_t evt)
1907 {
1908         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1909
1910         if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1911                 spin_lock_irq(shost->host_lock);
1912                 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1913                 spin_unlock_irq(shost->host_lock);
1914                 return ndlp->nlp_state;
1915         }
1916         lpfc_drop_node(vport, ndlp);
1917         return NLP_STE_FREED_NODE;
1918 }
1919
1920 static uint32_t
1921 lpfc_device_recov_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1922                            void *arg, uint32_t evt)
1923 {
1924         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1925
1926         /* Don't do anything that will mess up processing of the
1927          * previous RSCN.
1928          */
1929         if (vport->fc_flag & FC_RSCN_DEFERRED)
1930                 return ndlp->nlp_state;
1931
1932         spin_lock_irq(shost->host_lock);
1933         ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1934         spin_unlock_irq(shost->host_lock);
1935         lpfc_cancel_retry_delay_tmo(vport, ndlp);
1936         return ndlp->nlp_state;
1937 }
1938
1939
1940 /* This next section defines the NPort Discovery State Machine */
1941
1942 /* There are 4 different double linked lists nodelist entries can reside on.
1943  * The plogi list and adisc list are used when Link Up discovery or RSCN
1944  * processing is needed. Each list holds the nodes that we will send PLOGI
1945  * or ADISC on. These lists will keep track of what nodes will be effected
1946  * by an RSCN, or a Link Up (Typically, all nodes are effected on Link Up).
1947  * The unmapped_list will contain all nodes that we have successfully logged
1948  * into at the Fibre Channel level. The mapped_list will contain all nodes
1949  * that are mapped FCP targets.
1950  */
1951 /*
1952  * The bind list is a list of undiscovered (potentially non-existent) nodes
1953  * that we have saved binding information on. This information is used when
1954  * nodes transition from the unmapped to the mapped list.
1955  */
1956 /* For UNUSED_NODE state, the node has just been allocated .
1957  * For PLOGI_ISSUE and REG_LOGIN_ISSUE, the node is on
1958  * the PLOGI list. For REG_LOGIN_COMPL, the node is taken off the PLOGI list
1959  * and put on the unmapped list. For ADISC processing, the node is taken off
1960  * the ADISC list and placed on either the mapped or unmapped list (depending
1961  * on its previous state). Once on the unmapped list, a PRLI is issued and the
1962  * state changed to PRLI_ISSUE. When the PRLI completion occurs, the state is
1963  * changed to UNMAPPED_NODE. If the completion indicates a mapped
1964  * node, the node is taken off the unmapped list. The binding list is checked
1965  * for a valid binding, or a binding is automatically assigned. If binding
1966  * assignment is unsuccessful, the node is left on the unmapped list. If
1967  * binding assignment is successful, the associated binding list entry (if
1968  * any) is removed, and the node is placed on the mapped list.
1969  */
1970 /*
1971  * For a Link Down, all nodes on the ADISC, PLOGI, unmapped or mapped
1972  * lists will receive a DEVICE_RECOVERY event. If the linkdown or devloss timers
1973  * expire, all effected nodes will receive a DEVICE_RM event.
1974  */
1975 /*
1976  * For a Link Up or RSCN, all nodes will move from the mapped / unmapped lists
1977  * to either the ADISC or PLOGI list.  After a Nameserver query or ALPA loopmap
1978  * check, additional nodes may be added or removed (via DEVICE_RM) to / from
1979  * the PLOGI or ADISC lists. Once the PLOGI and ADISC lists are populated,
1980  * we will first process the ADISC list.  32 entries are processed initially and
1981  * ADISC is initited for each one.  Completions / Events for each node are
1982  * funnelled thru the state machine.  As each node finishes ADISC processing, it
1983  * starts ADISC for any nodes waiting for ADISC processing. If no nodes are
1984  * waiting, and the ADISC list count is identically 0, then we are done. For
1985  * Link Up discovery, since all nodes on the PLOGI list are UNREG_LOGIN'ed, we
1986  * can issue a CLEAR_LA and reenable Link Events. Next we will process the PLOGI
1987  * list.  32 entries are processed initially and PLOGI is initited for each one.
1988  * Completions / Events for each node are funnelled thru the state machine.  As
1989  * each node finishes PLOGI processing, it starts PLOGI for any nodes waiting
1990  * for PLOGI processing. If no nodes are waiting, and the PLOGI list count is
1991  * indentically 0, then we are done. We have now completed discovery / RSCN
1992  * handling. Upon completion, ALL nodes should be on either the mapped or
1993  * unmapped lists.
1994  */
1995
1996 static uint32_t (*lpfc_disc_action[NLP_STE_MAX_STATE * NLP_EVT_MAX_EVENT])
1997      (struct lpfc_vport *, struct lpfc_nodelist *, void *, uint32_t) = {
1998         /* Action routine                  Event       Current State  */
1999         lpfc_rcv_plogi_unused_node,     /* RCV_PLOGI   UNUSED_NODE    */
2000         lpfc_rcv_els_unused_node,       /* RCV_PRLI        */
2001         lpfc_rcv_logo_unused_node,      /* RCV_LOGO        */
2002         lpfc_rcv_els_unused_node,       /* RCV_ADISC       */
2003         lpfc_rcv_els_unused_node,       /* RCV_PDISC       */
2004         lpfc_rcv_els_unused_node,       /* RCV_PRLO        */
2005         lpfc_disc_illegal,              /* CMPL_PLOGI      */
2006         lpfc_disc_illegal,              /* CMPL_PRLI       */
2007         lpfc_cmpl_logo_unused_node,     /* CMPL_LOGO       */
2008         lpfc_disc_illegal,              /* CMPL_ADISC      */
2009         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
2010         lpfc_device_rm_unused_node,     /* DEVICE_RM       */
2011         lpfc_disc_illegal,              /* DEVICE_RECOVERY */
2012
2013         lpfc_rcv_plogi_plogi_issue,     /* RCV_PLOGI   PLOGI_ISSUE    */
2014         lpfc_rcv_prli_plogi_issue,      /* RCV_PRLI        */
2015         lpfc_rcv_logo_plogi_issue,      /* RCV_LOGO        */
2016         lpfc_rcv_els_plogi_issue,       /* RCV_ADISC       */
2017         lpfc_rcv_els_plogi_issue,       /* RCV_PDISC       */
2018         lpfc_rcv_els_plogi_issue,       /* RCV_PRLO        */
2019         lpfc_cmpl_plogi_plogi_issue,    /* CMPL_PLOGI      */
2020         lpfc_disc_illegal,              /* CMPL_PRLI       */
2021         lpfc_cmpl_logo_plogi_issue,     /* CMPL_LOGO       */
2022         lpfc_disc_illegal,              /* CMPL_ADISC      */
2023         lpfc_cmpl_reglogin_plogi_issue,/* CMPL_REG_LOGIN  */
2024         lpfc_device_rm_plogi_issue,     /* DEVICE_RM       */
2025         lpfc_device_recov_plogi_issue,  /* DEVICE_RECOVERY */
2026
2027         lpfc_rcv_plogi_adisc_issue,     /* RCV_PLOGI   ADISC_ISSUE    */
2028         lpfc_rcv_prli_adisc_issue,      /* RCV_PRLI        */
2029         lpfc_rcv_logo_adisc_issue,      /* RCV_LOGO        */
2030         lpfc_rcv_padisc_adisc_issue,    /* RCV_ADISC       */
2031         lpfc_rcv_padisc_adisc_issue,    /* RCV_PDISC       */
2032         lpfc_rcv_prlo_adisc_issue,      /* RCV_PRLO        */
2033         lpfc_disc_illegal,              /* CMPL_PLOGI      */
2034         lpfc_disc_illegal,              /* CMPL_PRLI       */
2035         lpfc_disc_illegal,              /* CMPL_LOGO       */
2036         lpfc_cmpl_adisc_adisc_issue,    /* CMPL_ADISC      */
2037         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
2038         lpfc_device_rm_adisc_issue,     /* DEVICE_RM       */
2039         lpfc_device_recov_adisc_issue,  /* DEVICE_RECOVERY */
2040
2041         lpfc_rcv_plogi_reglogin_issue,  /* RCV_PLOGI  REG_LOGIN_ISSUE */
2042         lpfc_rcv_prli_reglogin_issue,   /* RCV_PLOGI       */
2043         lpfc_rcv_logo_reglogin_issue,   /* RCV_LOGO        */
2044         lpfc_rcv_padisc_reglogin_issue, /* RCV_ADISC       */
2045         lpfc_rcv_padisc_reglogin_issue, /* RCV_PDISC       */
2046         lpfc_rcv_prlo_reglogin_issue,   /* RCV_PRLO        */
2047         lpfc_cmpl_plogi_illegal,        /* CMPL_PLOGI      */
2048         lpfc_disc_illegal,              /* CMPL_PRLI       */
2049         lpfc_disc_illegal,              /* CMPL_LOGO       */
2050         lpfc_disc_illegal,              /* CMPL_ADISC      */
2051         lpfc_cmpl_reglogin_reglogin_issue,/* CMPL_REG_LOGIN  */
2052         lpfc_device_rm_reglogin_issue,  /* DEVICE_RM       */
2053         lpfc_device_recov_reglogin_issue,/* DEVICE_RECOVERY */
2054
2055         lpfc_rcv_plogi_prli_issue,      /* RCV_PLOGI   PRLI_ISSUE     */
2056         lpfc_rcv_prli_prli_issue,       /* RCV_PRLI        */
2057         lpfc_rcv_logo_prli_issue,       /* RCV_LOGO        */
2058         lpfc_rcv_padisc_prli_issue,     /* RCV_ADISC       */
2059         lpfc_rcv_padisc_prli_issue,     /* RCV_PDISC       */
2060         lpfc_rcv_prlo_prli_issue,       /* RCV_PRLO        */
2061         lpfc_cmpl_plogi_illegal,        /* CMPL_PLOGI      */
2062         lpfc_cmpl_prli_prli_issue,      /* CMPL_PRLI       */
2063         lpfc_disc_illegal,              /* CMPL_LOGO       */
2064         lpfc_disc_illegal,              /* CMPL_ADISC      */
2065         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
2066         lpfc_device_rm_prli_issue,      /* DEVICE_RM       */
2067         lpfc_device_recov_prli_issue,   /* DEVICE_RECOVERY */
2068
2069         lpfc_rcv_plogi_unmap_node,      /* RCV_PLOGI   UNMAPPED_NODE  */
2070         lpfc_rcv_prli_unmap_node,       /* RCV_PRLI        */
2071         lpfc_rcv_logo_unmap_node,       /* RCV_LOGO        */
2072         lpfc_rcv_padisc_unmap_node,     /* RCV_ADISC       */
2073         lpfc_rcv_padisc_unmap_node,     /* RCV_PDISC       */
2074         lpfc_rcv_prlo_unmap_node,       /* RCV_PRLO        */
2075         lpfc_disc_illegal,              /* CMPL_PLOGI      */
2076         lpfc_disc_illegal,              /* CMPL_PRLI       */
2077         lpfc_disc_illegal,              /* CMPL_LOGO       */
2078         lpfc_disc_illegal,              /* CMPL_ADISC      */
2079         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
2080         lpfc_disc_illegal,              /* DEVICE_RM       */
2081         lpfc_device_recov_unmap_node,   /* DEVICE_RECOVERY */
2082
2083         lpfc_rcv_plogi_mapped_node,     /* RCV_PLOGI   MAPPED_NODE    */
2084         lpfc_rcv_prli_mapped_node,      /* RCV_PRLI        */
2085         lpfc_rcv_logo_mapped_node,      /* RCV_LOGO        */
2086         lpfc_rcv_padisc_mapped_node,    /* RCV_ADISC       */
2087         lpfc_rcv_padisc_mapped_node,    /* RCV_PDISC       */
2088         lpfc_rcv_prlo_mapped_node,      /* RCV_PRLO        */
2089         lpfc_disc_illegal,              /* CMPL_PLOGI      */
2090         lpfc_disc_illegal,              /* CMPL_PRLI       */
2091         lpfc_disc_illegal,              /* CMPL_LOGO       */
2092         lpfc_disc_illegal,              /* CMPL_ADISC      */
2093         lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
2094         lpfc_disc_illegal,              /* DEVICE_RM       */
2095         lpfc_device_recov_mapped_node,  /* DEVICE_RECOVERY */
2096
2097         lpfc_rcv_plogi_npr_node,        /* RCV_PLOGI   NPR_NODE    */
2098         lpfc_rcv_prli_npr_node,         /* RCV_PRLI        */
2099         lpfc_rcv_logo_npr_node,         /* RCV_LOGO        */
2100         lpfc_rcv_padisc_npr_node,       /* RCV_ADISC       */
2101         lpfc_rcv_padisc_npr_node,       /* RCV_PDISC       */
2102         lpfc_rcv_prlo_npr_node,         /* RCV_PRLO        */
2103         lpfc_cmpl_plogi_npr_node,       /* CMPL_PLOGI      */
2104         lpfc_cmpl_prli_npr_node,        /* CMPL_PRLI       */
2105         lpfc_cmpl_logo_npr_node,        /* CMPL_LOGO       */
2106         lpfc_cmpl_adisc_npr_node,       /* CMPL_ADISC      */
2107         lpfc_cmpl_reglogin_npr_node,    /* CMPL_REG_LOGIN  */
2108         lpfc_device_rm_npr_node,        /* DEVICE_RM       */
2109         lpfc_device_recov_npr_node,     /* DEVICE_RECOVERY */
2110 };
2111
2112 int
2113 lpfc_disc_state_machine(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2114                         void *arg, uint32_t evt)
2115 {
2116         uint32_t cur_state, rc;
2117         uint32_t(*func) (struct lpfc_vport *, struct lpfc_nodelist *, void *,
2118                          uint32_t);
2119         uint32_t got_ndlp = 0;
2120
2121         if (lpfc_nlp_get(ndlp))
2122                 got_ndlp = 1;
2123
2124         cur_state = ndlp->nlp_state;
2125
2126         /* DSM in event <evt> on NPort <nlp_DID> in state <cur_state> */
2127         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
2128                          "0211 DSM in event x%x on NPort x%x in "
2129                          "state %d Data: x%x\n",
2130                          evt, ndlp->nlp_DID, cur_state, ndlp->nlp_flag);
2131
2132         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_DSM,
2133                  "DSM in:          evt:%d ste:%d did:x%x",
2134                 evt, cur_state, ndlp->nlp_DID);
2135
2136         func = lpfc_disc_action[(cur_state * NLP_EVT_MAX_EVENT) + evt];
2137         rc = (func) (vport, ndlp, arg, evt);
2138
2139         /* DSM out state <rc> on NPort <nlp_DID> */
2140         if (got_ndlp) {
2141                 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
2142                          "0212 DSM out state %d on NPort x%x Data: x%x\n",
2143                          rc, ndlp->nlp_DID, ndlp->nlp_flag);
2144
2145                 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_DSM,
2146                         "DSM out:         ste:%d did:x%x flg:x%x",
2147                         rc, ndlp->nlp_DID, ndlp->nlp_flag);
2148                 /* Decrement the ndlp reference count held for this function */
2149                 lpfc_nlp_put(ndlp);
2150         } else {
2151                 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
2152                         "0213 DSM out state %d on NPort free\n", rc);
2153
2154                 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_DSM,
2155                         "DSM out:         ste:%d did:x%x flg:x%x",
2156                         rc, 0, 0);
2157         }
2158
2159         return rc;
2160 }