[SCSI] lpfc 8.2.8 : Add new FCOE hardware support
[linux-2.6.git] / drivers / scsi / lpfc / lpfc_hbadisc.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/kthread.h>
25 #include <linux/interrupt.h>
26
27 #include <scsi/scsi.h>
28 #include <scsi/scsi_device.h>
29 #include <scsi/scsi_host.h>
30 #include <scsi/scsi_transport_fc.h>
31
32 #include "lpfc_hw.h"
33 #include "lpfc_disc.h"
34 #include "lpfc_sli.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 /* AlpaArray for assignment of scsid for scan-down and bind_method */
43 static uint8_t lpfcAlpaArray[] = {
44         0xEF, 0xE8, 0xE4, 0xE2, 0xE1, 0xE0, 0xDC, 0xDA, 0xD9, 0xD6,
45         0xD5, 0xD4, 0xD3, 0xD2, 0xD1, 0xCE, 0xCD, 0xCC, 0xCB, 0xCA,
46         0xC9, 0xC7, 0xC6, 0xC5, 0xC3, 0xBC, 0xBA, 0xB9, 0xB6, 0xB5,
47         0xB4, 0xB3, 0xB2, 0xB1, 0xAE, 0xAD, 0xAC, 0xAB, 0xAA, 0xA9,
48         0xA7, 0xA6, 0xA5, 0xA3, 0x9F, 0x9E, 0x9D, 0x9B, 0x98, 0x97,
49         0x90, 0x8F, 0x88, 0x84, 0x82, 0x81, 0x80, 0x7C, 0x7A, 0x79,
50         0x76, 0x75, 0x74, 0x73, 0x72, 0x71, 0x6E, 0x6D, 0x6C, 0x6B,
51         0x6A, 0x69, 0x67, 0x66, 0x65, 0x63, 0x5C, 0x5A, 0x59, 0x56,
52         0x55, 0x54, 0x53, 0x52, 0x51, 0x4E, 0x4D, 0x4C, 0x4B, 0x4A,
53         0x49, 0x47, 0x46, 0x45, 0x43, 0x3C, 0x3A, 0x39, 0x36, 0x35,
54         0x34, 0x33, 0x32, 0x31, 0x2E, 0x2D, 0x2C, 0x2B, 0x2A, 0x29,
55         0x27, 0x26, 0x25, 0x23, 0x1F, 0x1E, 0x1D, 0x1B, 0x18, 0x17,
56         0x10, 0x0F, 0x08, 0x04, 0x02, 0x01
57 };
58
59 static void lpfc_disc_timeout_handler(struct lpfc_vport *);
60 static void lpfc_disc_flush_list(struct lpfc_vport *vport);
61
62 void
63 lpfc_terminate_rport_io(struct fc_rport *rport)
64 {
65         struct lpfc_rport_data *rdata;
66         struct lpfc_nodelist * ndlp;
67         struct lpfc_hba *phba;
68
69         rdata = rport->dd_data;
70         ndlp = rdata->pnode;
71
72         if (!ndlp || !NLP_CHK_NODE_ACT(ndlp)) {
73                 if (rport->roles & FC_RPORT_ROLE_FCP_TARGET)
74                         printk(KERN_ERR "Cannot find remote node"
75                         " to terminate I/O Data x%x\n",
76                         rport->port_id);
77                 return;
78         }
79
80         phba  = ndlp->vport->phba;
81
82         lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_RPORT,
83                 "rport terminate: sid:x%x did:x%x flg:x%x",
84                 ndlp->nlp_sid, ndlp->nlp_DID, ndlp->nlp_flag);
85
86         if (ndlp->nlp_sid != NLP_NO_SID) {
87                 lpfc_sli_abort_iocb(ndlp->vport,
88                         &phba->sli.ring[phba->sli.fcp_ring],
89                         ndlp->nlp_sid, 0, LPFC_CTX_TGT);
90         }
91 }
92
93 /*
94  * This function will be called when dev_loss_tmo fire.
95  */
96 void
97 lpfc_dev_loss_tmo_callbk(struct fc_rport *rport)
98 {
99         struct lpfc_rport_data *rdata;
100         struct lpfc_nodelist * ndlp;
101         struct lpfc_vport *vport;
102         struct lpfc_hba   *phba;
103         struct lpfc_work_evt *evtp;
104         int  put_node;
105         int  put_rport;
106
107         rdata = rport->dd_data;
108         ndlp = rdata->pnode;
109         if (!ndlp || !NLP_CHK_NODE_ACT(ndlp))
110                 return;
111
112         vport = ndlp->vport;
113         phba  = vport->phba;
114
115         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
116                 "rport devlosscb: sid:x%x did:x%x flg:x%x",
117                 ndlp->nlp_sid, ndlp->nlp_DID, ndlp->nlp_flag);
118
119         /* Don't defer this if we are in the process of deleting the vport
120          * or unloading the driver. The unload will cleanup the node
121          * appropriately we just need to cleanup the ndlp rport info here.
122          */
123         if (vport->load_flag & FC_UNLOADING) {
124                 put_node = rdata->pnode != NULL;
125                 put_rport = ndlp->rport != NULL;
126                 rdata->pnode = NULL;
127                 ndlp->rport = NULL;
128                 if (put_node)
129                         lpfc_nlp_put(ndlp);
130                 if (put_rport)
131                         put_device(&rport->dev);
132                 return;
133         }
134
135         if (ndlp->nlp_state == NLP_STE_MAPPED_NODE)
136                 return;
137
138         evtp = &ndlp->dev_loss_evt;
139
140         if (!list_empty(&evtp->evt_listp))
141                 return;
142
143         spin_lock_irq(&phba->hbalock);
144         /* We need to hold the node by incrementing the reference
145          * count until this queued work is done
146          */
147         evtp->evt_arg1  = lpfc_nlp_get(ndlp);
148         if (evtp->evt_arg1) {
149                 evtp->evt = LPFC_EVT_DEV_LOSS;
150                 list_add_tail(&evtp->evt_listp, &phba->work_list);
151                 lpfc_worker_wake_up(phba);
152         }
153         spin_unlock_irq(&phba->hbalock);
154
155         return;
156 }
157
158 /*
159  * This function is called from the worker thread when dev_loss_tmo
160  * expire.
161  */
162 static void
163 lpfc_dev_loss_tmo_handler(struct lpfc_nodelist *ndlp)
164 {
165         struct lpfc_rport_data *rdata;
166         struct fc_rport   *rport;
167         struct lpfc_vport *vport;
168         struct lpfc_hba   *phba;
169         uint8_t *name;
170         int  put_node;
171         int  put_rport;
172         int warn_on = 0;
173
174         rport = ndlp->rport;
175
176         if (!rport)
177                 return;
178
179         rdata = rport->dd_data;
180         name = (uint8_t *) &ndlp->nlp_portname;
181         vport = ndlp->vport;
182         phba  = vport->phba;
183
184         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
185                 "rport devlosstmo:did:x%x type:x%x id:x%x",
186                 ndlp->nlp_DID, ndlp->nlp_type, rport->scsi_target_id);
187
188         /* Don't defer this if we are in the process of deleting the vport
189          * or unloading the driver. The unload will cleanup the node
190          * appropriately we just need to cleanup the ndlp rport info here.
191          */
192         if (vport->load_flag & FC_UNLOADING) {
193                 if (ndlp->nlp_sid != NLP_NO_SID) {
194                         /* flush the target */
195                         lpfc_sli_abort_iocb(vport,
196                                         &phba->sli.ring[phba->sli.fcp_ring],
197                                         ndlp->nlp_sid, 0, LPFC_CTX_TGT);
198                 }
199                 put_node = rdata->pnode != NULL;
200                 put_rport = ndlp->rport != NULL;
201                 rdata->pnode = NULL;
202                 ndlp->rport = NULL;
203                 if (put_node)
204                         lpfc_nlp_put(ndlp);
205                 if (put_rport)
206                         put_device(&rport->dev);
207                 return;
208         }
209
210         if (ndlp->nlp_state == NLP_STE_MAPPED_NODE) {
211                 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
212                                  "0284 Devloss timeout Ignored on "
213                                  "WWPN %x:%x:%x:%x:%x:%x:%x:%x "
214                                  "NPort x%x\n",
215                                  *name, *(name+1), *(name+2), *(name+3),
216                                  *(name+4), *(name+5), *(name+6), *(name+7),
217                                  ndlp->nlp_DID);
218                 return;
219         }
220
221         if (ndlp->nlp_type & NLP_FABRIC) {
222                 /* We will clean up these Nodes in linkup */
223                 put_node = rdata->pnode != NULL;
224                 put_rport = ndlp->rport != NULL;
225                 rdata->pnode = NULL;
226                 ndlp->rport = NULL;
227                 if (put_node)
228                         lpfc_nlp_put(ndlp);
229                 if (put_rport)
230                         put_device(&rport->dev);
231                 return;
232         }
233
234         if (ndlp->nlp_sid != NLP_NO_SID) {
235                 warn_on = 1;
236                 /* flush the target */
237                 lpfc_sli_abort_iocb(vport, &phba->sli.ring[phba->sli.fcp_ring],
238                                     ndlp->nlp_sid, 0, LPFC_CTX_TGT);
239         }
240         if (vport->load_flag & FC_UNLOADING)
241                 warn_on = 0;
242
243         if (warn_on) {
244                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
245                                  "0203 Devloss timeout on "
246                                  "WWPN %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x "
247                                  "NPort x%06x Data: x%x x%x x%x\n",
248                                  *name, *(name+1), *(name+2), *(name+3),
249                                  *(name+4), *(name+5), *(name+6), *(name+7),
250                                  ndlp->nlp_DID, ndlp->nlp_flag,
251                                  ndlp->nlp_state, ndlp->nlp_rpi);
252         } else {
253                 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
254                                  "0204 Devloss timeout on "
255                                  "WWPN %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x "
256                                  "NPort x%06x Data: x%x x%x x%x\n",
257                                  *name, *(name+1), *(name+2), *(name+3),
258                                  *(name+4), *(name+5), *(name+6), *(name+7),
259                                  ndlp->nlp_DID, ndlp->nlp_flag,
260                                  ndlp->nlp_state, ndlp->nlp_rpi);
261         }
262
263         put_node = rdata->pnode != NULL;
264         put_rport = ndlp->rport != NULL;
265         rdata->pnode = NULL;
266         ndlp->rport = NULL;
267         if (put_node)
268                 lpfc_nlp_put(ndlp);
269         if (put_rport)
270                 put_device(&rport->dev);
271
272         if (!(vport->load_flag & FC_UNLOADING) &&
273             !(ndlp->nlp_flag & NLP_DELAY_TMO) &&
274             !(ndlp->nlp_flag & NLP_NPR_2B_DISC) &&
275             (ndlp->nlp_state != NLP_STE_UNMAPPED_NODE))
276                 lpfc_disc_state_machine(vport, ndlp, NULL, NLP_EVT_DEVICE_RM);
277 }
278
279 static void
280 lpfc_work_list_done(struct lpfc_hba *phba)
281 {
282         struct lpfc_work_evt  *evtp = NULL;
283         struct lpfc_nodelist  *ndlp;
284         int free_evt;
285
286         spin_lock_irq(&phba->hbalock);
287         while (!list_empty(&phba->work_list)) {
288                 list_remove_head((&phba->work_list), evtp, typeof(*evtp),
289                                  evt_listp);
290                 spin_unlock_irq(&phba->hbalock);
291                 free_evt = 1;
292                 switch (evtp->evt) {
293                 case LPFC_EVT_ELS_RETRY:
294                         ndlp = (struct lpfc_nodelist *) (evtp->evt_arg1);
295                         lpfc_els_retry_delay_handler(ndlp);
296                         free_evt = 0; /* evt is part of ndlp */
297                         /* decrement the node reference count held
298                          * for this queued work
299                          */
300                         lpfc_nlp_put(ndlp);
301                         break;
302                 case LPFC_EVT_DEV_LOSS:
303                         ndlp = (struct lpfc_nodelist *)(evtp->evt_arg1);
304                         lpfc_dev_loss_tmo_handler(ndlp);
305                         free_evt = 0;
306                         /* decrement the node reference count held for
307                          * this queued work
308                          */
309                         lpfc_nlp_put(ndlp);
310                         break;
311                 case LPFC_EVT_ONLINE:
312                         if (phba->link_state < LPFC_LINK_DOWN)
313                                 *(int *) (evtp->evt_arg1) = lpfc_online(phba);
314                         else
315                                 *(int *) (evtp->evt_arg1) = 0;
316                         complete((struct completion *)(evtp->evt_arg2));
317                         break;
318                 case LPFC_EVT_OFFLINE_PREP:
319                         if (phba->link_state >= LPFC_LINK_DOWN)
320                                 lpfc_offline_prep(phba);
321                         *(int *)(evtp->evt_arg1) = 0;
322                         complete((struct completion *)(evtp->evt_arg2));
323                         break;
324                 case LPFC_EVT_OFFLINE:
325                         lpfc_offline(phba);
326                         lpfc_sli_brdrestart(phba);
327                         *(int *)(evtp->evt_arg1) =
328                                 lpfc_sli_brdready(phba, HS_FFRDY | HS_MBRDY);
329                         lpfc_unblock_mgmt_io(phba);
330                         complete((struct completion *)(evtp->evt_arg2));
331                         break;
332                 case LPFC_EVT_WARM_START:
333                         lpfc_offline(phba);
334                         lpfc_reset_barrier(phba);
335                         lpfc_sli_brdreset(phba);
336                         lpfc_hba_down_post(phba);
337                         *(int *)(evtp->evt_arg1) =
338                                 lpfc_sli_brdready(phba, HS_MBRDY);
339                         lpfc_unblock_mgmt_io(phba);
340                         complete((struct completion *)(evtp->evt_arg2));
341                         break;
342                 case LPFC_EVT_KILL:
343                         lpfc_offline(phba);
344                         *(int *)(evtp->evt_arg1)
345                                 = (phba->pport->stopped)
346                                         ? 0 : lpfc_sli_brdkill(phba);
347                         lpfc_unblock_mgmt_io(phba);
348                         complete((struct completion *)(evtp->evt_arg2));
349                         break;
350                 }
351                 if (free_evt)
352                         kfree(evtp);
353                 spin_lock_irq(&phba->hbalock);
354         }
355         spin_unlock_irq(&phba->hbalock);
356
357 }
358
359 static void
360 lpfc_work_done(struct lpfc_hba *phba)
361 {
362         struct lpfc_sli_ring *pring;
363         uint32_t ha_copy, status, control, work_port_events;
364         struct lpfc_vport **vports;
365         struct lpfc_vport *vport;
366         int i;
367
368         spin_lock_irq(&phba->hbalock);
369         ha_copy = phba->work_ha;
370         phba->work_ha = 0;
371         spin_unlock_irq(&phba->hbalock);
372
373         if (ha_copy & HA_ERATT)
374                 lpfc_handle_eratt(phba);
375
376         if (ha_copy & HA_MBATT)
377                 lpfc_sli_handle_mb_event(phba);
378
379         if (ha_copy & HA_LATT)
380                 lpfc_handle_latt(phba);
381         vports = lpfc_create_vport_work_array(phba);
382         if (vports != NULL)
383                 for(i = 0; i <= phba->max_vpi; i++) {
384                         /*
385                          * We could have no vports in array if unloading, so if
386                          * this happens then just use the pport
387                          */
388                         if (vports[i] == NULL && i == 0)
389                                 vport = phba->pport;
390                         else
391                                 vport = vports[i];
392                         if (vport == NULL)
393                                 break;
394                         spin_lock_irq(&vport->work_port_lock);
395                         work_port_events = vport->work_port_events;
396                         vport->work_port_events &= ~work_port_events;
397                         spin_unlock_irq(&vport->work_port_lock);
398                         if (work_port_events & WORKER_DISC_TMO)
399                                 lpfc_disc_timeout_handler(vport);
400                         if (work_port_events & WORKER_ELS_TMO)
401                                 lpfc_els_timeout_handler(vport);
402                         if (work_port_events & WORKER_HB_TMO)
403                                 lpfc_hb_timeout_handler(phba);
404                         if (work_port_events & WORKER_MBOX_TMO)
405                                 lpfc_mbox_timeout_handler(phba);
406                         if (work_port_events & WORKER_FABRIC_BLOCK_TMO)
407                                 lpfc_unblock_fabric_iocbs(phba);
408                         if (work_port_events & WORKER_FDMI_TMO)
409                                 lpfc_fdmi_timeout_handler(vport);
410                         if (work_port_events & WORKER_RAMP_DOWN_QUEUE)
411                                 lpfc_ramp_down_queue_handler(phba);
412                         if (work_port_events & WORKER_RAMP_UP_QUEUE)
413                                 lpfc_ramp_up_queue_handler(phba);
414                 }
415         lpfc_destroy_vport_work_array(phba, vports);
416
417         pring = &phba->sli.ring[LPFC_ELS_RING];
418         status = (ha_copy & (HA_RXMASK  << (4*LPFC_ELS_RING)));
419         status >>= (4*LPFC_ELS_RING);
420         if ((status & HA_RXMASK)
421                 || (pring->flag & LPFC_DEFERRED_RING_EVENT)) {
422                 if (pring->flag & LPFC_STOP_IOCB_EVENT) {
423                         pring->flag |= LPFC_DEFERRED_RING_EVENT;
424                         /* Set the lpfc data pending flag */
425                         set_bit(LPFC_DATA_READY, &phba->data_flags);
426                 } else {
427                         pring->flag &= ~LPFC_DEFERRED_RING_EVENT;
428                         lpfc_sli_handle_slow_ring_event(phba, pring,
429                                                         (status &
430                                                          HA_RXMASK));
431                 }
432                 /*
433                  * Turn on Ring interrupts
434                  */
435                 spin_lock_irq(&phba->hbalock);
436                 control = readl(phba->HCregaddr);
437                 if (!(control & (HC_R0INT_ENA << LPFC_ELS_RING))) {
438                         lpfc_debugfs_slow_ring_trc(phba,
439                                 "WRK Enable ring: cntl:x%x hacopy:x%x",
440                                 control, ha_copy, 0);
441
442                         control |= (HC_R0INT_ENA << LPFC_ELS_RING);
443                         writel(control, phba->HCregaddr);
444                         readl(phba->HCregaddr); /* flush */
445                 }
446                 else {
447                         lpfc_debugfs_slow_ring_trc(phba,
448                                 "WRK Ring ok:     cntl:x%x hacopy:x%x",
449                                 control, ha_copy, 0);
450                 }
451                 spin_unlock_irq(&phba->hbalock);
452         }
453         lpfc_work_list_done(phba);
454 }
455
456 int
457 lpfc_do_work(void *p)
458 {
459         struct lpfc_hba *phba = p;
460         int rc;
461
462         set_user_nice(current, -20);
463         phba->data_flags = 0;
464
465         while (1) {
466                 /* wait and check worker queue activities */
467                 rc = wait_event_interruptible(phba->work_waitq,
468                                         (test_and_clear_bit(LPFC_DATA_READY,
469                                                             &phba->data_flags)
470                                          || kthread_should_stop()));
471                 BUG_ON(rc);
472
473                 if (kthread_should_stop())
474                         break;
475
476                 /* Attend pending lpfc data processing */
477                 lpfc_work_done(phba);
478         }
479         return 0;
480 }
481
482 /*
483  * This is only called to handle FC worker events. Since this a rare
484  * occurance, we allocate a struct lpfc_work_evt structure here instead of
485  * embedding it in the IOCB.
486  */
487 int
488 lpfc_workq_post_event(struct lpfc_hba *phba, void *arg1, void *arg2,
489                       uint32_t evt)
490 {
491         struct lpfc_work_evt  *evtp;
492         unsigned long flags;
493
494         /*
495          * All Mailbox completions and LPFC_ELS_RING rcv ring IOCB events will
496          * be queued to worker thread for processing
497          */
498         evtp = kmalloc(sizeof(struct lpfc_work_evt), GFP_ATOMIC);
499         if (!evtp)
500                 return 0;
501
502         evtp->evt_arg1  = arg1;
503         evtp->evt_arg2  = arg2;
504         evtp->evt       = evt;
505
506         spin_lock_irqsave(&phba->hbalock, flags);
507         list_add_tail(&evtp->evt_listp, &phba->work_list);
508         spin_unlock_irqrestore(&phba->hbalock, flags);
509
510         lpfc_worker_wake_up(phba);
511
512         return 1;
513 }
514
515 void
516 lpfc_cleanup_rpis(struct lpfc_vport *vport, int remove)
517 {
518         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
519         struct lpfc_hba  *phba = vport->phba;
520         struct lpfc_nodelist *ndlp, *next_ndlp;
521         int  rc;
522
523         list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) {
524                 if (!NLP_CHK_NODE_ACT(ndlp))
525                         continue;
526                 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
527                         continue;
528                 if ((phba->sli3_options & LPFC_SLI3_VPORT_TEARDOWN) ||
529                         ((vport->port_type == LPFC_NPIV_PORT) &&
530                         (ndlp->nlp_DID == NameServer_DID)))
531                         lpfc_unreg_rpi(vport, ndlp);
532
533                 /* Leave Fabric nodes alone on link down */
534                 if (!remove && ndlp->nlp_type & NLP_FABRIC)
535                         continue;
536                 rc = lpfc_disc_state_machine(vport, ndlp, NULL,
537                                              remove
538                                              ? NLP_EVT_DEVICE_RM
539                                              : NLP_EVT_DEVICE_RECOVERY);
540         }
541         if (phba->sli3_options & LPFC_SLI3_VPORT_TEARDOWN) {
542                 lpfc_mbx_unreg_vpi(vport);
543                 spin_lock_irq(shost->host_lock);
544                 vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
545                 spin_unlock_irq(shost->host_lock);
546         }
547 }
548
549 void
550 lpfc_port_link_failure(struct lpfc_vport *vport)
551 {
552         /* Cleanup any outstanding RSCN activity */
553         lpfc_els_flush_rscn(vport);
554
555         /* Cleanup any outstanding ELS commands */
556         lpfc_els_flush_cmd(vport);
557
558         lpfc_cleanup_rpis(vport, 0);
559
560         /* Turn off discovery timer if its running */
561         lpfc_can_disctmo(vport);
562 }
563
564 static void
565 lpfc_linkdown_port(struct lpfc_vport *vport)
566 {
567         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
568
569         fc_host_post_event(shost, fc_get_event_number(), FCH_EVT_LINKDOWN, 0);
570
571         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
572                 "Link Down:       state:x%x rtry:x%x flg:x%x",
573                 vport->port_state, vport->fc_ns_retry, vport->fc_flag);
574
575         lpfc_port_link_failure(vport);
576
577 }
578
579 int
580 lpfc_linkdown(struct lpfc_hba *phba)
581 {
582         struct lpfc_vport *vport = phba->pport;
583         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
584         struct lpfc_vport **vports;
585         LPFC_MBOXQ_t          *mb;
586         int i;
587
588         if (phba->link_state == LPFC_LINK_DOWN)
589                 return 0;
590         spin_lock_irq(&phba->hbalock);
591         if (phba->link_state > LPFC_LINK_DOWN) {
592                 phba->link_state = LPFC_LINK_DOWN;
593                 phba->pport->fc_flag &= ~FC_LBIT;
594         }
595         spin_unlock_irq(&phba->hbalock);
596         vports = lpfc_create_vport_work_array(phba);
597         if (vports != NULL)
598                 for(i = 0; i <= phba->max_vpi && vports[i] != NULL; i++) {
599                         /* Issue a LINK DOWN event to all nodes */
600                         lpfc_linkdown_port(vports[i]);
601                 }
602         lpfc_destroy_vport_work_array(phba, vports);
603         /* Clean up any firmware default rpi's */
604         mb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
605         if (mb) {
606                 lpfc_unreg_did(phba, 0xffff, 0xffffffff, mb);
607                 mb->vport = vport;
608                 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
609                 if (lpfc_sli_issue_mbox(phba, mb, MBX_NOWAIT)
610                     == MBX_NOT_FINISHED) {
611                         mempool_free(mb, phba->mbox_mem_pool);
612                 }
613         }
614
615         /* Setup myDID for link up if we are in pt2pt mode */
616         if (phba->pport->fc_flag & FC_PT2PT) {
617                 phba->pport->fc_myDID = 0;
618                 mb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
619                 if (mb) {
620                         lpfc_config_link(phba, mb);
621                         mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
622                         mb->vport = vport;
623                         if (lpfc_sli_issue_mbox(phba, mb, MBX_NOWAIT)
624                             == MBX_NOT_FINISHED) {
625                                 mempool_free(mb, phba->mbox_mem_pool);
626                         }
627                 }
628                 spin_lock_irq(shost->host_lock);
629                 phba->pport->fc_flag &= ~(FC_PT2PT | FC_PT2PT_PLOGI);
630                 spin_unlock_irq(shost->host_lock);
631         }
632
633         return 0;
634 }
635
636 static void
637 lpfc_linkup_cleanup_nodes(struct lpfc_vport *vport)
638 {
639         struct lpfc_nodelist *ndlp;
640
641         list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
642                 if (!NLP_CHK_NODE_ACT(ndlp))
643                         continue;
644                 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
645                         continue;
646                 if (ndlp->nlp_type & NLP_FABRIC) {
647                         /* On Linkup its safe to clean up the ndlp
648                          * from Fabric connections.
649                          */
650                         if (ndlp->nlp_DID != Fabric_DID)
651                                 lpfc_unreg_rpi(vport, ndlp);
652                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
653                 } else if (!(ndlp->nlp_flag & NLP_NPR_ADISC)) {
654                         /* Fail outstanding IO now since device is
655                          * marked for PLOGI.
656                          */
657                         lpfc_unreg_rpi(vport, ndlp);
658                 }
659         }
660 }
661
662 static void
663 lpfc_linkup_port(struct lpfc_vport *vport)
664 {
665         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
666         struct lpfc_hba  *phba = vport->phba;
667
668         if ((vport->load_flag & FC_UNLOADING) != 0)
669                 return;
670
671         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
672                 "Link Up:         top:x%x speed:x%x flg:x%x",
673                 phba->fc_topology, phba->fc_linkspeed, phba->link_flag);
674
675         /* If NPIV is not enabled, only bring the physical port up */
676         if (!(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
677                 (vport != phba->pport))
678                 return;
679
680         fc_host_post_event(shost, fc_get_event_number(), FCH_EVT_LINKUP, 0);
681
682         spin_lock_irq(shost->host_lock);
683         vport->fc_flag &= ~(FC_PT2PT | FC_PT2PT_PLOGI | FC_ABORT_DISCOVERY |
684                             FC_RSCN_MODE | FC_NLP_MORE | FC_RSCN_DISCOVERY);
685         vport->fc_flag |= FC_NDISC_ACTIVE;
686         vport->fc_ns_retry = 0;
687         spin_unlock_irq(shost->host_lock);
688
689         if (vport->fc_flag & FC_LBIT)
690                 lpfc_linkup_cleanup_nodes(vport);
691
692 }
693
694 static int
695 lpfc_linkup(struct lpfc_hba *phba)
696 {
697         struct lpfc_vport **vports;
698         int i;
699
700         phba->link_state = LPFC_LINK_UP;
701
702         /* Unblock fabric iocbs if they are blocked */
703         clear_bit(FABRIC_COMANDS_BLOCKED, &phba->bit_flags);
704         del_timer_sync(&phba->fabric_block_timer);
705
706         vports = lpfc_create_vport_work_array(phba);
707         if (vports != NULL)
708                 for(i = 0; i <= phba->max_vpi && vports[i] != NULL; i++)
709                         lpfc_linkup_port(vports[i]);
710         lpfc_destroy_vport_work_array(phba, vports);
711         if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)
712                 lpfc_issue_clear_la(phba, phba->pport);
713
714         return 0;
715 }
716
717 /*
718  * This routine handles processing a CLEAR_LA mailbox
719  * command upon completion. It is setup in the LPFC_MBOXQ
720  * as the completion routine when the command is
721  * handed off to the SLI layer.
722  */
723 static void
724 lpfc_mbx_cmpl_clear_la(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
725 {
726         struct lpfc_vport *vport = pmb->vport;
727         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
728         struct lpfc_sli   *psli = &phba->sli;
729         MAILBOX_t *mb = &pmb->mb;
730         uint32_t control;
731
732         /* Since we don't do discovery right now, turn these off here */
733         psli->ring[psli->extra_ring].flag &= ~LPFC_STOP_IOCB_EVENT;
734         psli->ring[psli->fcp_ring].flag &= ~LPFC_STOP_IOCB_EVENT;
735         psli->ring[psli->next_ring].flag &= ~LPFC_STOP_IOCB_EVENT;
736
737         /* Check for error */
738         if ((mb->mbxStatus) && (mb->mbxStatus != 0x1601)) {
739                 /* CLEAR_LA mbox error <mbxStatus> state <hba_state> */
740                 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
741                                  "0320 CLEAR_LA mbxStatus error x%x hba "
742                                  "state x%x\n",
743                                  mb->mbxStatus, vport->port_state);
744                 phba->link_state = LPFC_HBA_ERROR;
745                 goto out;
746         }
747
748         if (vport->port_type == LPFC_PHYSICAL_PORT)
749                 phba->link_state = LPFC_HBA_READY;
750
751         spin_lock_irq(&phba->hbalock);
752         psli->sli_flag |= LPFC_PROCESS_LA;
753         control = readl(phba->HCregaddr);
754         control |= HC_LAINT_ENA;
755         writel(control, phba->HCregaddr);
756         readl(phba->HCregaddr); /* flush */
757         spin_unlock_irq(&phba->hbalock);
758         mempool_free(pmb, phba->mbox_mem_pool);
759         return;
760
761 out:
762         /* Device Discovery completes */
763         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
764                          "0225 Device Discovery completes\n");
765         mempool_free(pmb, phba->mbox_mem_pool);
766
767         spin_lock_irq(shost->host_lock);
768         vport->fc_flag &= ~FC_ABORT_DISCOVERY;
769         spin_unlock_irq(shost->host_lock);
770
771         lpfc_can_disctmo(vport);
772
773         /* turn on Link Attention interrupts */
774
775         spin_lock_irq(&phba->hbalock);
776         psli->sli_flag |= LPFC_PROCESS_LA;
777         control = readl(phba->HCregaddr);
778         control |= HC_LAINT_ENA;
779         writel(control, phba->HCregaddr);
780         readl(phba->HCregaddr); /* flush */
781         spin_unlock_irq(&phba->hbalock);
782
783         return;
784 }
785
786
787 static void
788 lpfc_mbx_cmpl_local_config_link(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
789 {
790         struct lpfc_vport *vport = pmb->vport;
791
792         if (pmb->mb.mbxStatus)
793                 goto out;
794
795         mempool_free(pmb, phba->mbox_mem_pool);
796
797         if (phba->fc_topology == TOPOLOGY_LOOP &&
798             vport->fc_flag & FC_PUBLIC_LOOP &&
799             !(vport->fc_flag & FC_LBIT)) {
800                         /* Need to wait for FAN - use discovery timer
801                          * for timeout.  port_state is identically
802                          * LPFC_LOCAL_CFG_LINK while waiting for FAN
803                          */
804                         lpfc_set_disctmo(vport);
805                         return;
806         }
807
808         /* Start discovery by sending a FLOGI. port_state is identically
809          * LPFC_FLOGI while waiting for FLOGI cmpl
810          */
811         if (vport->port_state != LPFC_FLOGI) {
812                 lpfc_initial_flogi(vport);
813         }
814         return;
815
816 out:
817         lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
818                          "0306 CONFIG_LINK mbxStatus error x%x "
819                          "HBA state x%x\n",
820                          pmb->mb.mbxStatus, vport->port_state);
821         mempool_free(pmb, phba->mbox_mem_pool);
822
823         lpfc_linkdown(phba);
824
825         lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
826                          "0200 CONFIG_LINK bad hba state x%x\n",
827                          vport->port_state);
828
829         lpfc_issue_clear_la(phba, vport);
830         return;
831 }
832
833 static void
834 lpfc_mbx_cmpl_read_sparam(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
835 {
836         MAILBOX_t *mb = &pmb->mb;
837         struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) pmb->context1;
838         struct lpfc_vport  *vport = pmb->vport;
839
840
841         /* Check for error */
842         if (mb->mbxStatus) {
843                 /* READ_SPARAM mbox error <mbxStatus> state <hba_state> */
844                 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
845                                  "0319 READ_SPARAM mbxStatus error x%x "
846                                  "hba state x%x>\n",
847                                  mb->mbxStatus, vport->port_state);
848                 lpfc_linkdown(phba);
849                 goto out;
850         }
851
852         memcpy((uint8_t *) &vport->fc_sparam, (uint8_t *) mp->virt,
853                sizeof (struct serv_parm));
854         if (phba->cfg_soft_wwnn)
855                 u64_to_wwn(phba->cfg_soft_wwnn,
856                            vport->fc_sparam.nodeName.u.wwn);
857         if (phba->cfg_soft_wwpn)
858                 u64_to_wwn(phba->cfg_soft_wwpn,
859                            vport->fc_sparam.portName.u.wwn);
860         memcpy(&vport->fc_nodename, &vport->fc_sparam.nodeName,
861                sizeof(vport->fc_nodename));
862         memcpy(&vport->fc_portname, &vport->fc_sparam.portName,
863                sizeof(vport->fc_portname));
864         if (vport->port_type == LPFC_PHYSICAL_PORT) {
865                 memcpy(&phba->wwnn, &vport->fc_nodename, sizeof(phba->wwnn));
866                 memcpy(&phba->wwpn, &vport->fc_portname, sizeof(phba->wwnn));
867         }
868
869         lpfc_mbuf_free(phba, mp->virt, mp->phys);
870         kfree(mp);
871         mempool_free(pmb, phba->mbox_mem_pool);
872         return;
873
874 out:
875         pmb->context1 = NULL;
876         lpfc_mbuf_free(phba, mp->virt, mp->phys);
877         kfree(mp);
878         lpfc_issue_clear_la(phba, vport);
879         mempool_free(pmb, phba->mbox_mem_pool);
880         return;
881 }
882
883 static void
884 lpfc_mbx_process_link_up(struct lpfc_hba *phba, READ_LA_VAR *la)
885 {
886         struct lpfc_vport *vport = phba->pport;
887         LPFC_MBOXQ_t *sparam_mbox, *cfglink_mbox;
888         int i;
889         struct lpfc_dmabuf *mp;
890         int rc;
891
892         sparam_mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
893         cfglink_mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
894
895         spin_lock_irq(&phba->hbalock);
896         switch (la->UlnkSpeed) {
897         case LA_1GHZ_LINK:
898                 phba->fc_linkspeed = LA_1GHZ_LINK;
899                 break;
900         case LA_2GHZ_LINK:
901                 phba->fc_linkspeed = LA_2GHZ_LINK;
902                 break;
903         case LA_4GHZ_LINK:
904                 phba->fc_linkspeed = LA_4GHZ_LINK;
905                 break;
906         case LA_8GHZ_LINK:
907                 phba->fc_linkspeed = LA_8GHZ_LINK;
908                 break;
909         default:
910                 phba->fc_linkspeed = LA_UNKNW_LINK;
911                 break;
912         }
913
914         phba->fc_topology = la->topology;
915         phba->link_flag &= ~LS_NPIV_FAB_SUPPORTED;
916
917         if (phba->fc_topology == TOPOLOGY_LOOP) {
918                 phba->sli3_options &= ~LPFC_SLI3_NPIV_ENABLED;
919
920                 if (phba->cfg_enable_npiv)
921                         lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
922                                 "1309 Link Up Event npiv not supported in loop "
923                                 "topology\n");
924                                 /* Get Loop Map information */
925                 if (la->il)
926                         vport->fc_flag |= FC_LBIT;
927
928                 vport->fc_myDID = la->granted_AL_PA;
929                 i = la->un.lilpBde64.tus.f.bdeSize;
930
931                 if (i == 0) {
932                         phba->alpa_map[0] = 0;
933                 } else {
934                         if (vport->cfg_log_verbose & LOG_LINK_EVENT) {
935                                 int numalpa, j, k;
936                                 union {
937                                         uint8_t pamap[16];
938                                         struct {
939                                                 uint32_t wd1;
940                                                 uint32_t wd2;
941                                                 uint32_t wd3;
942                                                 uint32_t wd4;
943                                         } pa;
944                                 } un;
945                                 numalpa = phba->alpa_map[0];
946                                 j = 0;
947                                 while (j < numalpa) {
948                                         memset(un.pamap, 0, 16);
949                                         for (k = 1; j < numalpa; k++) {
950                                                 un.pamap[k - 1] =
951                                                         phba->alpa_map[j + 1];
952                                                 j++;
953                                                 if (k == 16)
954                                                         break;
955                                         }
956                                         /* Link Up Event ALPA map */
957                                         lpfc_printf_log(phba,
958                                                         KERN_WARNING,
959                                                         LOG_LINK_EVENT,
960                                                         "1304 Link Up Event "
961                                                         "ALPA map Data: x%x "
962                                                         "x%x x%x x%x\n",
963                                                         un.pa.wd1, un.pa.wd2,
964                                                         un.pa.wd3, un.pa.wd4);
965                                 }
966                         }
967                 }
968         } else {
969                 if (!(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)) {
970                         if (phba->max_vpi && phba->cfg_enable_npiv &&
971                            (phba->sli_rev == 3))
972                                 phba->sli3_options |= LPFC_SLI3_NPIV_ENABLED;
973                 }
974                 vport->fc_myDID = phba->fc_pref_DID;
975                 vport->fc_flag |= FC_LBIT;
976         }
977         spin_unlock_irq(&phba->hbalock);
978
979         lpfc_linkup(phba);
980         if (sparam_mbox) {
981                 lpfc_read_sparam(phba, sparam_mbox, 0);
982                 sparam_mbox->vport = vport;
983                 sparam_mbox->mbox_cmpl = lpfc_mbx_cmpl_read_sparam;
984                 rc = lpfc_sli_issue_mbox(phba, sparam_mbox, MBX_NOWAIT);
985                 if (rc == MBX_NOT_FINISHED) {
986                         mp = (struct lpfc_dmabuf *) sparam_mbox->context1;
987                         lpfc_mbuf_free(phba, mp->virt, mp->phys);
988                         kfree(mp);
989                         mempool_free(sparam_mbox, phba->mbox_mem_pool);
990                         if (cfglink_mbox)
991                                 mempool_free(cfglink_mbox, phba->mbox_mem_pool);
992                         goto out;
993                 }
994         }
995
996         if (cfglink_mbox) {
997                 vport->port_state = LPFC_LOCAL_CFG_LINK;
998                 lpfc_config_link(phba, cfglink_mbox);
999                 cfglink_mbox->vport = vport;
1000                 cfglink_mbox->mbox_cmpl = lpfc_mbx_cmpl_local_config_link;
1001                 rc = lpfc_sli_issue_mbox(phba, cfglink_mbox, MBX_NOWAIT);
1002                 if (rc != MBX_NOT_FINISHED)
1003                         return;
1004                 mempool_free(cfglink_mbox, phba->mbox_mem_pool);
1005         }
1006 out:
1007         lpfc_vport_set_state(vport, FC_VPORT_FAILED);
1008         lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
1009                          "0263 Discovery Mailbox error: state: 0x%x : %p %p\n",
1010                          vport->port_state, sparam_mbox, cfglink_mbox);
1011         lpfc_issue_clear_la(phba, vport);
1012         return;
1013 }
1014
1015 static void
1016 lpfc_enable_la(struct lpfc_hba *phba)
1017 {
1018         uint32_t control;
1019         struct lpfc_sli *psli = &phba->sli;
1020         spin_lock_irq(&phba->hbalock);
1021         psli->sli_flag |= LPFC_PROCESS_LA;
1022         control = readl(phba->HCregaddr);
1023         control |= HC_LAINT_ENA;
1024         writel(control, phba->HCregaddr);
1025         readl(phba->HCregaddr); /* flush */
1026         spin_unlock_irq(&phba->hbalock);
1027 }
1028
1029 static void
1030 lpfc_mbx_issue_link_down(struct lpfc_hba *phba)
1031 {
1032         lpfc_linkdown(phba);
1033         lpfc_enable_la(phba);
1034         /* turn on Link Attention interrupts - no CLEAR_LA needed */
1035 }
1036
1037
1038 /*
1039  * This routine handles processing a READ_LA mailbox
1040  * command upon completion. It is setup in the LPFC_MBOXQ
1041  * as the completion routine when the command is
1042  * handed off to the SLI layer.
1043  */
1044 void
1045 lpfc_mbx_cmpl_read_la(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
1046 {
1047         struct lpfc_vport *vport = pmb->vport;
1048         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
1049         READ_LA_VAR *la;
1050         MAILBOX_t *mb = &pmb->mb;
1051         struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
1052
1053         /* Unblock ELS traffic */
1054         phba->sli.ring[LPFC_ELS_RING].flag &= ~LPFC_STOP_IOCB_EVENT;
1055         /* Check for error */
1056         if (mb->mbxStatus) {
1057                 lpfc_printf_log(phba, KERN_INFO, LOG_LINK_EVENT,
1058                                 "1307 READ_LA mbox error x%x state x%x\n",
1059                                 mb->mbxStatus, vport->port_state);
1060                 lpfc_mbx_issue_link_down(phba);
1061                 phba->link_state = LPFC_HBA_ERROR;
1062                 goto lpfc_mbx_cmpl_read_la_free_mbuf;
1063         }
1064
1065         la = (READ_LA_VAR *) & pmb->mb.un.varReadLA;
1066
1067         memcpy(&phba->alpa_map[0], mp->virt, 128);
1068
1069         spin_lock_irq(shost->host_lock);
1070         if (la->pb)
1071                 vport->fc_flag |= FC_BYPASSED_MODE;
1072         else
1073                 vport->fc_flag &= ~FC_BYPASSED_MODE;
1074         spin_unlock_irq(shost->host_lock);
1075
1076         if (((phba->fc_eventTag + 1) < la->eventTag) ||
1077             (phba->fc_eventTag == la->eventTag)) {
1078                 phba->fc_stat.LinkMultiEvent++;
1079                 if (la->attType == AT_LINK_UP)
1080                         if (phba->fc_eventTag != 0)
1081                                 lpfc_linkdown(phba);
1082         }
1083
1084         phba->fc_eventTag = la->eventTag;
1085         if (la->mm)
1086                 phba->sli.sli_flag |= LPFC_MENLO_MAINT;
1087         else
1088                 phba->sli.sli_flag &= ~LPFC_MENLO_MAINT;
1089
1090         if (la->attType == AT_LINK_UP && (!la->mm)) {
1091                 phba->fc_stat.LinkUp++;
1092                 if (phba->link_flag & LS_LOOPBACK_MODE) {
1093                         lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
1094                                         "1306 Link Up Event in loop back mode "
1095                                         "x%x received Data: x%x x%x x%x x%x\n",
1096                                         la->eventTag, phba->fc_eventTag,
1097                                         la->granted_AL_PA, la->UlnkSpeed,
1098                                         phba->alpa_map[0]);
1099                 } else {
1100                         lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
1101                                         "1303 Link Up Event x%x received "
1102                                         "Data: x%x x%x x%x x%x x%x x%x %d\n",
1103                                         la->eventTag, phba->fc_eventTag,
1104                                         la->granted_AL_PA, la->UlnkSpeed,
1105                                         phba->alpa_map[0],
1106                                         la->mm, la->fa,
1107                                         phba->wait_4_mlo_maint_flg);
1108                 }
1109                 lpfc_mbx_process_link_up(phba, la);
1110         } else if (la->attType == AT_LINK_DOWN) {
1111                 phba->fc_stat.LinkDown++;
1112                 if (phba->link_flag & LS_LOOPBACK_MODE) {
1113                         lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
1114                                 "1308 Link Down Event in loop back mode "
1115                                 "x%x received "
1116                                 "Data: x%x x%x x%x\n",
1117                                 la->eventTag, phba->fc_eventTag,
1118                                 phba->pport->port_state, vport->fc_flag);
1119                 }
1120                 else {
1121                         lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
1122                                 "1305 Link Down Event x%x received "
1123                                 "Data: x%x x%x x%x x%x x%x\n",
1124                                 la->eventTag, phba->fc_eventTag,
1125                                 phba->pport->port_state, vport->fc_flag,
1126                                 la->mm, la->fa);
1127                 }
1128                 lpfc_mbx_issue_link_down(phba);
1129         }
1130         if (la->mm && la->attType == AT_LINK_UP) {
1131                 if (phba->link_state != LPFC_LINK_DOWN) {
1132                         phba->fc_stat.LinkDown++;
1133                         lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
1134                                 "1312 Link Down Event x%x received "
1135                                 "Data: x%x x%x x%x\n",
1136                                 la->eventTag, phba->fc_eventTag,
1137                                 phba->pport->port_state, vport->fc_flag);
1138                         lpfc_mbx_issue_link_down(phba);
1139                 } else
1140                         lpfc_enable_la(phba);
1141
1142                 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
1143                                 "1310 Menlo Maint Mode Link up Event x%x rcvd "
1144                                 "Data: x%x x%x x%x\n",
1145                                 la->eventTag, phba->fc_eventTag,
1146                                 phba->pport->port_state, vport->fc_flag);
1147                 /*
1148                  * The cmnd that triggered this will be waiting for this
1149                  * signal.
1150                  */
1151                 /* WAKEUP for MENLO_SET_MODE or MENLO_RESET command. */
1152                 if (phba->wait_4_mlo_maint_flg) {
1153                         phba->wait_4_mlo_maint_flg = 0;
1154                         wake_up_interruptible(&phba->wait_4_mlo_m_q);
1155                 }
1156         }
1157
1158         if (la->fa) {
1159                 if (la->mm)
1160                         lpfc_issue_clear_la(phba, vport);
1161                 lpfc_printf_log(phba, KERN_INFO, LOG_LINK_EVENT,
1162                                 "1311 fa %d\n", la->fa);
1163         }
1164
1165 lpfc_mbx_cmpl_read_la_free_mbuf:
1166         lpfc_mbuf_free(phba, mp->virt, mp->phys);
1167         kfree(mp);
1168         mempool_free(pmb, phba->mbox_mem_pool);
1169         return;
1170 }
1171
1172 /*
1173  * This routine handles processing a REG_LOGIN mailbox
1174  * command upon completion. It is setup in the LPFC_MBOXQ
1175  * as the completion routine when the command is
1176  * handed off to the SLI layer.
1177  */
1178 void
1179 lpfc_mbx_cmpl_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
1180 {
1181         struct lpfc_vport  *vport = pmb->vport;
1182         struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
1183         struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) pmb->context2;
1184
1185         pmb->context1 = NULL;
1186
1187         /* Good status, call state machine */
1188         lpfc_disc_state_machine(vport, ndlp, pmb, NLP_EVT_CMPL_REG_LOGIN);
1189         lpfc_mbuf_free(phba, mp->virt, mp->phys);
1190         kfree(mp);
1191         mempool_free(pmb, phba->mbox_mem_pool);
1192         /* decrement the node reference count held for this callback
1193          * function.
1194          */
1195         lpfc_nlp_put(ndlp);
1196
1197         return;
1198 }
1199
1200 static void
1201 lpfc_mbx_cmpl_unreg_vpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
1202 {
1203         MAILBOX_t *mb = &pmb->mb;
1204         struct lpfc_vport *vport = pmb->vport;
1205         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
1206
1207         switch (mb->mbxStatus) {
1208         case 0x0011:
1209         case 0x0020:
1210         case 0x9700:
1211                 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
1212                                  "0911 cmpl_unreg_vpi, mb status = 0x%x\n",
1213                                  mb->mbxStatus);
1214                 break;
1215         }
1216         vport->unreg_vpi_cmpl = VPORT_OK;
1217         mempool_free(pmb, phba->mbox_mem_pool);
1218         /*
1219          * This shost reference might have been taken at the beginning of
1220          * lpfc_vport_delete()
1221          */
1222         if (vport->load_flag & FC_UNLOADING)
1223                 scsi_host_put(shost);
1224 }
1225
1226 int
1227 lpfc_mbx_unreg_vpi(struct lpfc_vport *vport)
1228 {
1229         struct lpfc_hba  *phba = vport->phba;
1230         LPFC_MBOXQ_t *mbox;
1231         int rc;
1232
1233         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1234         if (!mbox)
1235                 return 1;
1236
1237         lpfc_unreg_vpi(phba, vport->vpi, mbox);
1238         mbox->vport = vport;
1239         mbox->mbox_cmpl = lpfc_mbx_cmpl_unreg_vpi;
1240         rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
1241         if (rc == MBX_NOT_FINISHED) {
1242                 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX | LOG_VPORT,
1243                                  "1800 Could not issue unreg_vpi\n");
1244                 mempool_free(mbox, phba->mbox_mem_pool);
1245                 vport->unreg_vpi_cmpl = VPORT_ERROR;
1246                 return rc;
1247         }
1248         return 0;
1249 }
1250
1251 static void
1252 lpfc_mbx_cmpl_reg_vpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
1253 {
1254         struct lpfc_vport *vport = pmb->vport;
1255         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
1256         MAILBOX_t *mb = &pmb->mb;
1257
1258         switch (mb->mbxStatus) {
1259         case 0x0011:
1260         case 0x9601:
1261         case 0x9602:
1262                 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
1263                                  "0912 cmpl_reg_vpi, mb status = 0x%x\n",
1264                                  mb->mbxStatus);
1265                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
1266                 spin_lock_irq(shost->host_lock);
1267                 vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP);
1268                 spin_unlock_irq(shost->host_lock);
1269                 vport->fc_myDID = 0;
1270                 goto out;
1271         }
1272
1273         vport->num_disc_nodes = 0;
1274         /* go thru NPR list and issue ELS PLOGIs */
1275         if (vport->fc_npr_cnt)
1276                 lpfc_els_disc_plogi(vport);
1277
1278         if (!vport->num_disc_nodes) {
1279                 spin_lock_irq(shost->host_lock);
1280                 vport->fc_flag &= ~FC_NDISC_ACTIVE;
1281                 spin_unlock_irq(shost->host_lock);
1282                 lpfc_can_disctmo(vport);
1283         }
1284         vport->port_state = LPFC_VPORT_READY;
1285
1286 out:
1287         mempool_free(pmb, phba->mbox_mem_pool);
1288         return;
1289 }
1290
1291 /*
1292  * This routine handles processing a Fabric REG_LOGIN mailbox
1293  * command upon completion. It is setup in the LPFC_MBOXQ
1294  * as the completion routine when the command is
1295  * handed off to the SLI layer.
1296  */
1297 void
1298 lpfc_mbx_cmpl_fabric_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
1299 {
1300         struct lpfc_vport *vport = pmb->vport;
1301         MAILBOX_t *mb = &pmb->mb;
1302         struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
1303         struct lpfc_nodelist *ndlp;
1304         struct lpfc_vport **vports;
1305         int i;
1306
1307         ndlp = (struct lpfc_nodelist *) pmb->context2;
1308         pmb->context1 = NULL;
1309         pmb->context2 = NULL;
1310         if (mb->mbxStatus) {
1311                 lpfc_mbuf_free(phba, mp->virt, mp->phys);
1312                 kfree(mp);
1313                 mempool_free(pmb, phba->mbox_mem_pool);
1314
1315                 if (phba->fc_topology == TOPOLOGY_LOOP) {
1316                         /* FLOGI failed, use loop map to make discovery list */
1317                         lpfc_disc_list_loopmap(vport);
1318
1319                         /* Start discovery */
1320                         lpfc_disc_start(vport);
1321                         /* Decrement the reference count to ndlp after the
1322                          * reference to the ndlp are done.
1323                          */
1324                         lpfc_nlp_put(ndlp);
1325                         return;
1326                 }
1327
1328                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
1329                 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
1330                                  "0258 Register Fabric login error: 0x%x\n",
1331                                  mb->mbxStatus);
1332                 /* Decrement the reference count to ndlp after the reference
1333                  * to the ndlp are done.
1334                  */
1335                 lpfc_nlp_put(ndlp);
1336                 return;
1337         }
1338
1339         ndlp->nlp_rpi = mb->un.varWords[0];
1340         ndlp->nlp_type |= NLP_FABRIC;
1341         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1342
1343         if (vport->port_state == LPFC_FABRIC_CFG_LINK) {
1344                 vports = lpfc_create_vport_work_array(phba);
1345                 if (vports != NULL)
1346                         for(i = 0;
1347                             i <= phba->max_vpi && vports[i] != NULL;
1348                             i++) {
1349                                 if (vports[i]->port_type == LPFC_PHYSICAL_PORT)
1350                                         continue;
1351                                 if (phba->fc_topology == TOPOLOGY_LOOP) {
1352                                         lpfc_vport_set_state(vports[i],
1353                                                         FC_VPORT_LINKDOWN);
1354                                         continue;
1355                                 }
1356                                 if (phba->link_flag & LS_NPIV_FAB_SUPPORTED)
1357                                         lpfc_initial_fdisc(vports[i]);
1358                                 else {
1359                                         lpfc_vport_set_state(vports[i],
1360                                                 FC_VPORT_NO_FABRIC_SUPP);
1361                                         lpfc_printf_vlog(vport, KERN_ERR,
1362                                                          LOG_ELS,
1363                                                         "0259 No NPIV "
1364                                                         "Fabric support\n");
1365                                 }
1366                         }
1367                 lpfc_destroy_vport_work_array(phba, vports);
1368                 lpfc_do_scr_ns_plogi(phba, vport);
1369         }
1370
1371         lpfc_mbuf_free(phba, mp->virt, mp->phys);
1372         kfree(mp);
1373         mempool_free(pmb, phba->mbox_mem_pool);
1374
1375         /* Drop the reference count from the mbox at the end after
1376          * all the current reference to the ndlp have been done.
1377          */
1378         lpfc_nlp_put(ndlp);
1379         return;
1380 }
1381
1382 /*
1383  * This routine handles processing a NameServer REG_LOGIN mailbox
1384  * command upon completion. It is setup in the LPFC_MBOXQ
1385  * as the completion routine when the command is
1386  * handed off to the SLI layer.
1387  */
1388 void
1389 lpfc_mbx_cmpl_ns_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
1390 {
1391         MAILBOX_t *mb = &pmb->mb;
1392         struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
1393         struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) pmb->context2;
1394         struct lpfc_vport *vport = pmb->vport;
1395
1396         if (mb->mbxStatus) {
1397 out:
1398                 /* decrement the node reference count held for this
1399                  * callback function.
1400                  */
1401                 lpfc_nlp_put(ndlp);
1402                 lpfc_mbuf_free(phba, mp->virt, mp->phys);
1403                 kfree(mp);
1404                 mempool_free(pmb, phba->mbox_mem_pool);
1405
1406                 /* If no other thread is using the ndlp, free it */
1407                 lpfc_nlp_not_used(ndlp);
1408
1409                 if (phba->fc_topology == TOPOLOGY_LOOP) {
1410                         /*
1411                          * RegLogin failed, use loop map to make discovery
1412                          * list
1413                          */
1414                         lpfc_disc_list_loopmap(vport);
1415
1416                         /* Start discovery */
1417                         lpfc_disc_start(vport);
1418                         return;
1419                 }
1420                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
1421                 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
1422                                  "0260 Register NameServer error: 0x%x\n",
1423                                  mb->mbxStatus);
1424                 return;
1425         }
1426
1427         pmb->context1 = NULL;
1428
1429         ndlp->nlp_rpi = mb->un.varWords[0];
1430         ndlp->nlp_type |= NLP_FABRIC;
1431         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1432
1433         if (vport->port_state < LPFC_VPORT_READY) {
1434                 /* Link up discovery requires Fabric registration. */
1435                 lpfc_ns_cmd(vport, SLI_CTNS_RFF_ID, 0, 0); /* Do this first! */
1436                 lpfc_ns_cmd(vport, SLI_CTNS_RNN_ID, 0, 0);
1437                 lpfc_ns_cmd(vport, SLI_CTNS_RSNN_NN, 0, 0);
1438                 lpfc_ns_cmd(vport, SLI_CTNS_RSPN_ID, 0, 0);
1439                 lpfc_ns_cmd(vport, SLI_CTNS_RFT_ID, 0, 0);
1440
1441                 /* Issue SCR just before NameServer GID_FT Query */
1442                 lpfc_issue_els_scr(vport, SCR_DID, 0);
1443         }
1444
1445         vport->fc_ns_retry = 0;
1446         /* Good status, issue CT Request to NameServer */
1447         if (lpfc_ns_cmd(vport, SLI_CTNS_GID_FT, 0, 0)) {
1448                 /* Cannot issue NameServer Query, so finish up discovery */
1449                 goto out;
1450         }
1451
1452         /* decrement the node reference count held for this
1453          * callback function.
1454          */
1455         lpfc_nlp_put(ndlp);
1456         lpfc_mbuf_free(phba, mp->virt, mp->phys);
1457         kfree(mp);
1458         mempool_free(pmb, phba->mbox_mem_pool);
1459
1460         return;
1461 }
1462
1463 static void
1464 lpfc_register_remote_port(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
1465 {
1466         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1467         struct fc_rport  *rport;
1468         struct lpfc_rport_data *rdata;
1469         struct fc_rport_identifiers rport_ids;
1470         struct lpfc_hba  *phba = vport->phba;
1471
1472         /* Remote port has reappeared. Re-register w/ FC transport */
1473         rport_ids.node_name = wwn_to_u64(ndlp->nlp_nodename.u.wwn);
1474         rport_ids.port_name = wwn_to_u64(ndlp->nlp_portname.u.wwn);
1475         rport_ids.port_id = ndlp->nlp_DID;
1476         rport_ids.roles = FC_RPORT_ROLE_UNKNOWN;
1477
1478         /*
1479          * We leave our node pointer in rport->dd_data when we unregister a
1480          * FCP target port.  But fc_remote_port_add zeros the space to which
1481          * rport->dd_data points.  So, if we're reusing a previously
1482          * registered port, drop the reference that we took the last time we
1483          * registered the port.
1484          */
1485         if (ndlp->rport && ndlp->rport->dd_data &&
1486             ((struct lpfc_rport_data *) ndlp->rport->dd_data)->pnode == ndlp)
1487                 lpfc_nlp_put(ndlp);
1488
1489         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
1490                 "rport add:       did:x%x flg:x%x type x%x",
1491                 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type);
1492
1493         ndlp->rport = rport = fc_remote_port_add(shost, 0, &rport_ids);
1494         if (!rport || !get_device(&rport->dev)) {
1495                 dev_printk(KERN_WARNING, &phba->pcidev->dev,
1496                            "Warning: fc_remote_port_add failed\n");
1497                 return;
1498         }
1499
1500         /* initialize static port data */
1501         rport->maxframe_size = ndlp->nlp_maxframe;
1502         rport->supported_classes = ndlp->nlp_class_sup;
1503         rdata = rport->dd_data;
1504         rdata->pnode = lpfc_nlp_get(ndlp);
1505
1506         if (ndlp->nlp_type & NLP_FCP_TARGET)
1507                 rport_ids.roles |= FC_RPORT_ROLE_FCP_TARGET;
1508         if (ndlp->nlp_type & NLP_FCP_INITIATOR)
1509                 rport_ids.roles |= FC_RPORT_ROLE_FCP_INITIATOR;
1510
1511
1512         if (rport_ids.roles !=  FC_RPORT_ROLE_UNKNOWN)
1513                 fc_remote_port_rolechg(rport, rport_ids.roles);
1514
1515         if ((rport->scsi_target_id != -1) &&
1516             (rport->scsi_target_id < LPFC_MAX_TARGET)) {
1517                 ndlp->nlp_sid = rport->scsi_target_id;
1518         }
1519         return;
1520 }
1521
1522 static void
1523 lpfc_unregister_remote_port(struct lpfc_nodelist *ndlp)
1524 {
1525         struct fc_rport *rport = ndlp->rport;
1526
1527         lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_RPORT,
1528                 "rport delete:    did:x%x flg:x%x type x%x",
1529                 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type);
1530
1531         fc_remote_port_delete(rport);
1532
1533         return;
1534 }
1535
1536 static void
1537 lpfc_nlp_counters(struct lpfc_vport *vport, int state, int count)
1538 {
1539         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1540
1541         spin_lock_irq(shost->host_lock);
1542         switch (state) {
1543         case NLP_STE_UNUSED_NODE:
1544                 vport->fc_unused_cnt += count;
1545                 break;
1546         case NLP_STE_PLOGI_ISSUE:
1547                 vport->fc_plogi_cnt += count;
1548                 break;
1549         case NLP_STE_ADISC_ISSUE:
1550                 vport->fc_adisc_cnt += count;
1551                 break;
1552         case NLP_STE_REG_LOGIN_ISSUE:
1553                 vport->fc_reglogin_cnt += count;
1554                 break;
1555         case NLP_STE_PRLI_ISSUE:
1556                 vport->fc_prli_cnt += count;
1557                 break;
1558         case NLP_STE_UNMAPPED_NODE:
1559                 vport->fc_unmap_cnt += count;
1560                 break;
1561         case NLP_STE_MAPPED_NODE:
1562                 vport->fc_map_cnt += count;
1563                 break;
1564         case NLP_STE_NPR_NODE:
1565                 vport->fc_npr_cnt += count;
1566                 break;
1567         }
1568         spin_unlock_irq(shost->host_lock);
1569 }
1570
1571 static void
1572 lpfc_nlp_state_cleanup(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1573                        int old_state, int new_state)
1574 {
1575         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1576
1577         if (new_state == NLP_STE_UNMAPPED_NODE) {
1578                 ndlp->nlp_type &= ~(NLP_FCP_TARGET | NLP_FCP_INITIATOR);
1579                 ndlp->nlp_flag &= ~NLP_NODEV_REMOVE;
1580                 ndlp->nlp_type |= NLP_FC_NODE;
1581         }
1582         if (new_state == NLP_STE_MAPPED_NODE)
1583                 ndlp->nlp_flag &= ~NLP_NODEV_REMOVE;
1584         if (new_state == NLP_STE_NPR_NODE)
1585                 ndlp->nlp_flag &= ~NLP_RCV_PLOGI;
1586
1587         /* Transport interface */
1588         if (ndlp->rport && (old_state == NLP_STE_MAPPED_NODE ||
1589                             old_state == NLP_STE_UNMAPPED_NODE)) {
1590                 vport->phba->nport_event_cnt++;
1591                 lpfc_unregister_remote_port(ndlp);
1592         }
1593
1594         if (new_state ==  NLP_STE_MAPPED_NODE ||
1595             new_state == NLP_STE_UNMAPPED_NODE) {
1596                 vport->phba->nport_event_cnt++;
1597                 /*
1598                  * Tell the fc transport about the port, if we haven't
1599                  * already. If we have, and it's a scsi entity, be
1600                  * sure to unblock any attached scsi devices
1601                  */
1602                 lpfc_register_remote_port(vport, ndlp);
1603         }
1604         /*
1605          * if we added to Mapped list, but the remote port
1606          * registration failed or assigned a target id outside
1607          * our presentable range - move the node to the
1608          * Unmapped List
1609          */
1610         if (new_state == NLP_STE_MAPPED_NODE &&
1611             (!ndlp->rport ||
1612              ndlp->rport->scsi_target_id == -1 ||
1613              ndlp->rport->scsi_target_id >= LPFC_MAX_TARGET)) {
1614                 spin_lock_irq(shost->host_lock);
1615                 ndlp->nlp_flag |= NLP_TGT_NO_SCSIID;
1616                 spin_unlock_irq(shost->host_lock);
1617                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1618         }
1619 }
1620
1621 static char *
1622 lpfc_nlp_state_name(char *buffer, size_t size, int state)
1623 {
1624         static char *states[] = {
1625                 [NLP_STE_UNUSED_NODE] = "UNUSED",
1626                 [NLP_STE_PLOGI_ISSUE] = "PLOGI",
1627                 [NLP_STE_ADISC_ISSUE] = "ADISC",
1628                 [NLP_STE_REG_LOGIN_ISSUE] = "REGLOGIN",
1629                 [NLP_STE_PRLI_ISSUE] = "PRLI",
1630                 [NLP_STE_UNMAPPED_NODE] = "UNMAPPED",
1631                 [NLP_STE_MAPPED_NODE] = "MAPPED",
1632                 [NLP_STE_NPR_NODE] = "NPR",
1633         };
1634
1635         if (state < NLP_STE_MAX_STATE && states[state])
1636                 strlcpy(buffer, states[state], size);
1637         else
1638                 snprintf(buffer, size, "unknown (%d)", state);
1639         return buffer;
1640 }
1641
1642 void
1643 lpfc_nlp_set_state(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1644                    int state)
1645 {
1646         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1647         int  old_state = ndlp->nlp_state;
1648         char name1[16], name2[16];
1649
1650         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
1651                          "0904 NPort state transition x%06x, %s -> %s\n",
1652                          ndlp->nlp_DID,
1653                          lpfc_nlp_state_name(name1, sizeof(name1), old_state),
1654                          lpfc_nlp_state_name(name2, sizeof(name2), state));
1655
1656         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE,
1657                 "node statechg    did:x%x old:%d ste:%d",
1658                 ndlp->nlp_DID, old_state, state);
1659
1660         if (old_state == NLP_STE_NPR_NODE &&
1661             state != NLP_STE_NPR_NODE)
1662                 lpfc_cancel_retry_delay_tmo(vport, ndlp);
1663         if (old_state == NLP_STE_UNMAPPED_NODE) {
1664                 ndlp->nlp_flag &= ~NLP_TGT_NO_SCSIID;
1665                 ndlp->nlp_type &= ~NLP_FC_NODE;
1666         }
1667
1668         if (list_empty(&ndlp->nlp_listp)) {
1669                 spin_lock_irq(shost->host_lock);
1670                 list_add_tail(&ndlp->nlp_listp, &vport->fc_nodes);
1671                 spin_unlock_irq(shost->host_lock);
1672         } else if (old_state)
1673                 lpfc_nlp_counters(vport, old_state, -1);
1674
1675         ndlp->nlp_state = state;
1676         lpfc_nlp_counters(vport, state, 1);
1677         lpfc_nlp_state_cleanup(vport, ndlp, old_state, state);
1678 }
1679
1680 void
1681 lpfc_enqueue_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
1682 {
1683         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1684
1685         if (list_empty(&ndlp->nlp_listp)) {
1686                 spin_lock_irq(shost->host_lock);
1687                 list_add_tail(&ndlp->nlp_listp, &vport->fc_nodes);
1688                 spin_unlock_irq(shost->host_lock);
1689         }
1690 }
1691
1692 void
1693 lpfc_dequeue_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
1694 {
1695         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1696
1697         lpfc_cancel_retry_delay_tmo(vport, ndlp);
1698         if (ndlp->nlp_state && !list_empty(&ndlp->nlp_listp))
1699                 lpfc_nlp_counters(vport, ndlp->nlp_state, -1);
1700         spin_lock_irq(shost->host_lock);
1701         list_del_init(&ndlp->nlp_listp);
1702         spin_unlock_irq(shost->host_lock);
1703         lpfc_nlp_state_cleanup(vport, ndlp, ndlp->nlp_state,
1704                                 NLP_STE_UNUSED_NODE);
1705 }
1706
1707 static void
1708 lpfc_disable_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
1709 {
1710         lpfc_cancel_retry_delay_tmo(vport, ndlp);
1711         if (ndlp->nlp_state && !list_empty(&ndlp->nlp_listp))
1712                 lpfc_nlp_counters(vport, ndlp->nlp_state, -1);
1713         lpfc_nlp_state_cleanup(vport, ndlp, ndlp->nlp_state,
1714                                 NLP_STE_UNUSED_NODE);
1715 }
1716
1717 struct lpfc_nodelist *
1718 lpfc_enable_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1719                  int state)
1720 {
1721         struct lpfc_hba *phba = vport->phba;
1722         uint32_t did;
1723         unsigned long flags;
1724
1725         if (!ndlp)
1726                 return NULL;
1727
1728         spin_lock_irqsave(&phba->ndlp_lock, flags);
1729         /* The ndlp should not be in memory free mode */
1730         if (NLP_CHK_FREE_REQ(ndlp)) {
1731                 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
1732                 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NODE,
1733                                 "0277 lpfc_enable_node: ndlp:x%p "
1734                                 "usgmap:x%x refcnt:%d\n",
1735                                 (void *)ndlp, ndlp->nlp_usg_map,
1736                                 atomic_read(&ndlp->kref.refcount));
1737                 return NULL;
1738         }
1739         /* The ndlp should not already be in active mode */
1740         if (NLP_CHK_NODE_ACT(ndlp)) {
1741                 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
1742                 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NODE,
1743                                 "0278 lpfc_enable_node: ndlp:x%p "
1744                                 "usgmap:x%x refcnt:%d\n",
1745                                 (void *)ndlp, ndlp->nlp_usg_map,
1746                                 atomic_read(&ndlp->kref.refcount));
1747                 return NULL;
1748         }
1749
1750         /* Keep the original DID */
1751         did = ndlp->nlp_DID;
1752
1753         /* re-initialize ndlp except of ndlp linked list pointer */
1754         memset((((char *)ndlp) + sizeof (struct list_head)), 0,
1755                 sizeof (struct lpfc_nodelist) - sizeof (struct list_head));
1756         INIT_LIST_HEAD(&ndlp->els_retry_evt.evt_listp);
1757         INIT_LIST_HEAD(&ndlp->dev_loss_evt.evt_listp);
1758         init_timer(&ndlp->nlp_delayfunc);
1759         ndlp->nlp_delayfunc.function = lpfc_els_retry_delay;
1760         ndlp->nlp_delayfunc.data = (unsigned long)ndlp;
1761         ndlp->nlp_DID = did;
1762         ndlp->vport = vport;
1763         ndlp->nlp_sid = NLP_NO_SID;
1764         /* ndlp management re-initialize */
1765         kref_init(&ndlp->kref);
1766         NLP_INT_NODE_ACT(ndlp);
1767
1768         spin_unlock_irqrestore(&phba->ndlp_lock, flags);
1769
1770         if (state != NLP_STE_UNUSED_NODE)
1771                 lpfc_nlp_set_state(vport, ndlp, state);
1772
1773         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE,
1774                 "node enable:       did:x%x",
1775                 ndlp->nlp_DID, 0, 0);
1776         return ndlp;
1777 }
1778
1779 void
1780 lpfc_drop_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
1781 {
1782         /*
1783          * Use of lpfc_drop_node and UNUSED list: lpfc_drop_node should
1784          * be used if we wish to issue the "last" lpfc_nlp_put() to remove
1785          * the ndlp from the vport. The ndlp marked as UNUSED on the list
1786          * until ALL other outstanding threads have completed. We check
1787          * that the ndlp not already in the UNUSED state before we proceed.
1788          */
1789         if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
1790                 return;
1791         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNUSED_NODE);
1792         lpfc_nlp_put(ndlp);
1793         return;
1794 }
1795
1796 /*
1797  * Start / ReStart rescue timer for Discovery / RSCN handling
1798  */
1799 void
1800 lpfc_set_disctmo(struct lpfc_vport *vport)
1801 {
1802         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1803         struct lpfc_hba  *phba = vport->phba;
1804         uint32_t tmo;
1805
1806         if (vport->port_state == LPFC_LOCAL_CFG_LINK) {
1807                 /* For FAN, timeout should be greater then edtov */
1808                 tmo = (((phba->fc_edtov + 999) / 1000) + 1);
1809         } else {
1810                 /* Normal discovery timeout should be > then ELS/CT timeout
1811                  * FC spec states we need 3 * ratov for CT requests
1812                  */
1813                 tmo = ((phba->fc_ratov * 3) + 3);
1814         }
1815
1816
1817         if (!timer_pending(&vport->fc_disctmo)) {
1818                 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
1819                         "set disc timer:  tmo:x%x state:x%x flg:x%x",
1820                         tmo, vport->port_state, vport->fc_flag);
1821         }
1822
1823         mod_timer(&vport->fc_disctmo, jiffies + HZ * tmo);
1824         spin_lock_irq(shost->host_lock);
1825         vport->fc_flag |= FC_DISC_TMO;
1826         spin_unlock_irq(shost->host_lock);
1827
1828         /* Start Discovery Timer state <hba_state> */
1829         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
1830                          "0247 Start Discovery Timer state x%x "
1831                          "Data: x%x x%lx x%x x%x\n",
1832                          vport->port_state, tmo,
1833                          (unsigned long)&vport->fc_disctmo, vport->fc_plogi_cnt,
1834                          vport->fc_adisc_cnt);
1835
1836         return;
1837 }
1838
1839 /*
1840  * Cancel rescue timer for Discovery / RSCN handling
1841  */
1842 int
1843 lpfc_can_disctmo(struct lpfc_vport *vport)
1844 {
1845         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1846         unsigned long iflags;
1847
1848         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
1849                 "can disc timer:  state:x%x rtry:x%x flg:x%x",
1850                 vport->port_state, vport->fc_ns_retry, vport->fc_flag);
1851
1852         /* Turn off discovery timer if its running */
1853         if (vport->fc_flag & FC_DISC_TMO) {
1854                 spin_lock_irqsave(shost->host_lock, iflags);
1855                 vport->fc_flag &= ~FC_DISC_TMO;
1856                 spin_unlock_irqrestore(shost->host_lock, iflags);
1857                 del_timer_sync(&vport->fc_disctmo);
1858                 spin_lock_irqsave(&vport->work_port_lock, iflags);
1859                 vport->work_port_events &= ~WORKER_DISC_TMO;
1860                 spin_unlock_irqrestore(&vport->work_port_lock, iflags);
1861         }
1862
1863         /* Cancel Discovery Timer state <hba_state> */
1864         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
1865                          "0248 Cancel Discovery Timer state x%x "
1866                          "Data: x%x x%x x%x\n",
1867                          vport->port_state, vport->fc_flag,
1868                          vport->fc_plogi_cnt, vport->fc_adisc_cnt);
1869         return 0;
1870 }
1871
1872 /*
1873  * Check specified ring for outstanding IOCB on the SLI queue
1874  * Return true if iocb matches the specified nport
1875  */
1876 int
1877 lpfc_check_sli_ndlp(struct lpfc_hba *phba,
1878                     struct lpfc_sli_ring *pring,
1879                     struct lpfc_iocbq *iocb,
1880                     struct lpfc_nodelist *ndlp)
1881 {
1882         struct lpfc_sli *psli = &phba->sli;
1883         IOCB_t *icmd = &iocb->iocb;
1884         struct lpfc_vport    *vport = ndlp->vport;
1885
1886         if (iocb->vport != vport)
1887                 return 0;
1888
1889         if (pring->ringno == LPFC_ELS_RING) {
1890                 switch (icmd->ulpCommand) {
1891                 case CMD_GEN_REQUEST64_CR:
1892                         if (icmd->ulpContext == (volatile ushort)ndlp->nlp_rpi)
1893                                 return 1;
1894                 case CMD_ELS_REQUEST64_CR:
1895                         if (icmd->un.elsreq64.remoteID == ndlp->nlp_DID)
1896                                 return 1;
1897                 case CMD_XMIT_ELS_RSP64_CX:
1898                         if (iocb->context1 == (uint8_t *) ndlp)
1899                                 return 1;
1900                 }
1901         } else if (pring->ringno == psli->extra_ring) {
1902
1903         } else if (pring->ringno == psli->fcp_ring) {
1904                 /* Skip match check if waiting to relogin to FCP target */
1905                 if ((ndlp->nlp_type & NLP_FCP_TARGET) &&
1906                     (ndlp->nlp_flag & NLP_DELAY_TMO)) {
1907                         return 0;
1908                 }
1909                 if (icmd->ulpContext == (volatile ushort)ndlp->nlp_rpi) {
1910                         return 1;
1911                 }
1912         } else if (pring->ringno == psli->next_ring) {
1913
1914         }
1915         return 0;
1916 }
1917
1918 /*
1919  * Free resources / clean up outstanding I/Os
1920  * associated with nlp_rpi in the LPFC_NODELIST entry.
1921  */
1922 static int
1923 lpfc_no_rpi(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
1924 {
1925         LIST_HEAD(completions);
1926         struct lpfc_sli *psli;
1927         struct lpfc_sli_ring *pring;
1928         struct lpfc_iocbq *iocb, *next_iocb;
1929         IOCB_t *icmd;
1930         uint32_t rpi, i;
1931
1932         lpfc_fabric_abort_nport(ndlp);
1933
1934         /*
1935          * Everything that matches on txcmplq will be returned
1936          * by firmware with a no rpi error.
1937          */
1938         psli = &phba->sli;
1939         rpi = ndlp->nlp_rpi;
1940         if (rpi) {
1941                 /* Now process each ring */
1942                 for (i = 0; i < psli->num_rings; i++) {
1943                         pring = &psli->ring[i];
1944
1945                         spin_lock_irq(&phba->hbalock);
1946                         list_for_each_entry_safe(iocb, next_iocb, &pring->txq,
1947                                                  list) {
1948                                 /*
1949                                  * Check to see if iocb matches the nport we are
1950                                  * looking for
1951                                  */
1952                                 if ((lpfc_check_sli_ndlp(phba, pring, iocb,
1953                                                          ndlp))) {
1954                                         /* It matches, so deque and call compl
1955                                            with an error */
1956                                         list_move_tail(&iocb->list,
1957                                                        &completions);
1958                                         pring->txq_cnt--;
1959                                 }
1960                         }
1961                         spin_unlock_irq(&phba->hbalock);
1962                 }
1963         }
1964
1965         while (!list_empty(&completions)) {
1966                 iocb = list_get_first(&completions, struct lpfc_iocbq, list);
1967                 list_del_init(&iocb->list);
1968
1969                 if (!iocb->iocb_cmpl)
1970                         lpfc_sli_release_iocbq(phba, iocb);
1971                 else {
1972                         icmd = &iocb->iocb;
1973                         icmd->ulpStatus = IOSTAT_LOCAL_REJECT;
1974                         icmd->un.ulpWord[4] = IOERR_SLI_ABORTED;
1975                         (iocb->iocb_cmpl)(phba, iocb, iocb);
1976                 }
1977         }
1978
1979         return 0;
1980 }
1981
1982 /*
1983  * Free rpi associated with LPFC_NODELIST entry.
1984  * This routine is called from lpfc_freenode(), when we are removing
1985  * a LPFC_NODELIST entry. It is also called if the driver initiates a
1986  * LOGO that completes successfully, and we are waiting to PLOGI back
1987  * to the remote NPort. In addition, it is called after we receive
1988  * and unsolicated ELS cmd, send back a rsp, the rsp completes and
1989  * we are waiting to PLOGI back to the remote NPort.
1990  */
1991 int
1992 lpfc_unreg_rpi(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
1993 {
1994         struct lpfc_hba *phba = vport->phba;
1995         LPFC_MBOXQ_t    *mbox;
1996         int rc;
1997
1998         if (ndlp->nlp_rpi) {
1999                 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
2000                 if (mbox) {
2001                         lpfc_unreg_login(phba, vport->vpi, ndlp->nlp_rpi, mbox);
2002                         mbox->vport = vport;
2003                         mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
2004                         rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
2005                         if (rc == MBX_NOT_FINISHED)
2006                                 mempool_free(mbox, phba->mbox_mem_pool);
2007                 }
2008                 lpfc_no_rpi(phba, ndlp);
2009                 ndlp->nlp_rpi = 0;
2010                 return 1;
2011         }
2012         return 0;
2013 }
2014
2015 void
2016 lpfc_unreg_all_rpis(struct lpfc_vport *vport)
2017 {
2018         struct lpfc_hba  *phba  = vport->phba;
2019         LPFC_MBOXQ_t     *mbox;
2020         int rc;
2021
2022         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
2023         if (mbox) {
2024                 lpfc_unreg_login(phba, vport->vpi, 0xffff, mbox);
2025                 mbox->vport = vport;
2026                 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
2027                 mbox->context1 = NULL;
2028                 rc = lpfc_sli_issue_mbox_wait(phba, mbox, LPFC_MBOX_TMO);
2029                 if (rc == MBX_NOT_FINISHED) {
2030                         mempool_free(mbox, phba->mbox_mem_pool);
2031                 }
2032         }
2033 }
2034
2035 void
2036 lpfc_unreg_default_rpis(struct lpfc_vport *vport)
2037 {
2038         struct lpfc_hba  *phba  = vport->phba;
2039         LPFC_MBOXQ_t     *mbox;
2040         int rc;
2041
2042         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
2043         if (mbox) {
2044                 lpfc_unreg_did(phba, vport->vpi, 0xffffffff, mbox);
2045                 mbox->vport = vport;
2046                 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
2047                 mbox->context1 = NULL;
2048                 rc = lpfc_sli_issue_mbox_wait(phba, mbox, LPFC_MBOX_TMO);
2049                 if (rc == MBX_NOT_FINISHED) {
2050                         lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX | LOG_VPORT,
2051                                          "1815 Could not issue "
2052                                          "unreg_did (default rpis)\n");
2053                         mempool_free(mbox, phba->mbox_mem_pool);
2054                 }
2055         }
2056 }
2057
2058 /*
2059  * Free resources associated with LPFC_NODELIST entry
2060  * so it can be freed.
2061  */
2062 static int
2063 lpfc_cleanup_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
2064 {
2065         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2066         struct lpfc_hba  *phba = vport->phba;
2067         LPFC_MBOXQ_t *mb, *nextmb;
2068         struct lpfc_dmabuf *mp;
2069
2070         /* Cleanup node for NPort <nlp_DID> */
2071         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
2072                          "0900 Cleanup node for NPort x%x "
2073                          "Data: x%x x%x x%x\n",
2074                          ndlp->nlp_DID, ndlp->nlp_flag,
2075                          ndlp->nlp_state, ndlp->nlp_rpi);
2076         if (NLP_CHK_FREE_REQ(ndlp)) {
2077                 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NODE,
2078                                 "0280 lpfc_cleanup_node: ndlp:x%p "
2079                                 "usgmap:x%x refcnt:%d\n",
2080                                 (void *)ndlp, ndlp->nlp_usg_map,
2081                                 atomic_read(&ndlp->kref.refcount));
2082                 lpfc_dequeue_node(vport, ndlp);
2083         } else {
2084                 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NODE,
2085                                 "0281 lpfc_cleanup_node: ndlp:x%p "
2086                                 "usgmap:x%x refcnt:%d\n",
2087                                 (void *)ndlp, ndlp->nlp_usg_map,
2088                                 atomic_read(&ndlp->kref.refcount));
2089                 lpfc_disable_node(vport, ndlp);
2090         }
2091
2092         /* cleanup any ndlp on mbox q waiting for reglogin cmpl */
2093         if ((mb = phba->sli.mbox_active)) {
2094                 if ((mb->mb.mbxCommand == MBX_REG_LOGIN64) &&
2095                    (ndlp == (struct lpfc_nodelist *) mb->context2)) {
2096                         mb->context2 = NULL;
2097                         mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
2098                 }
2099         }
2100
2101         spin_lock_irq(&phba->hbalock);
2102         list_for_each_entry_safe(mb, nextmb, &phba->sli.mboxq, list) {
2103                 if ((mb->mb.mbxCommand == MBX_REG_LOGIN64) &&
2104                     (ndlp == (struct lpfc_nodelist *) mb->context2)) {
2105                         mp = (struct lpfc_dmabuf *) (mb->context1);
2106                         if (mp) {
2107                                 __lpfc_mbuf_free(phba, mp->virt, mp->phys);
2108                                 kfree(mp);
2109                         }
2110                         list_del(&mb->list);
2111                         mempool_free(mb, phba->mbox_mem_pool);
2112                         /* We shall not invoke the lpfc_nlp_put to decrement
2113                          * the ndlp reference count as we are in the process
2114                          * of lpfc_nlp_release.
2115                          */
2116                 }
2117         }
2118         spin_unlock_irq(&phba->hbalock);
2119
2120         lpfc_els_abort(phba, ndlp);
2121
2122         spin_lock_irq(shost->host_lock);
2123         ndlp->nlp_flag &= ~NLP_DELAY_TMO;
2124         spin_unlock_irq(shost->host_lock);
2125
2126         ndlp->nlp_last_elscmd = 0;
2127         del_timer_sync(&ndlp->nlp_delayfunc);
2128
2129         list_del_init(&ndlp->els_retry_evt.evt_listp);
2130         list_del_init(&ndlp->dev_loss_evt.evt_listp);
2131
2132         lpfc_unreg_rpi(vport, ndlp);
2133
2134         return 0;
2135 }
2136
2137 /*
2138  * Check to see if we can free the nlp back to the freelist.
2139  * If we are in the middle of using the nlp in the discovery state
2140  * machine, defer the free till we reach the end of the state machine.
2141  */
2142 static void
2143 lpfc_nlp_remove(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
2144 {
2145         struct lpfc_hba  *phba = vport->phba;
2146         struct lpfc_rport_data *rdata;
2147         LPFC_MBOXQ_t *mbox;
2148         int rc;
2149
2150         lpfc_cancel_retry_delay_tmo(vport, ndlp);
2151         if (ndlp->nlp_flag & NLP_DEFER_RM && !ndlp->nlp_rpi) {
2152                 /* For this case we need to cleanup the default rpi
2153                  * allocated by the firmware.
2154                  */
2155                 if ((mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL))
2156                         != NULL) {
2157                         rc = lpfc_reg_login(phba, vport->vpi, ndlp->nlp_DID,
2158                             (uint8_t *) &vport->fc_sparam, mbox, 0);
2159                         if (rc) {
2160                                 mempool_free(mbox, phba->mbox_mem_pool);
2161                         }
2162                         else {
2163                                 mbox->mbox_flag |= LPFC_MBX_IMED_UNREG;
2164                                 mbox->mbox_cmpl = lpfc_mbx_cmpl_dflt_rpi;
2165                                 mbox->vport = vport;
2166                                 mbox->context2 = NULL;
2167                                 rc =lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
2168                                 if (rc == MBX_NOT_FINISHED) {
2169                                         mempool_free(mbox, phba->mbox_mem_pool);
2170                                 }
2171                         }
2172                 }
2173         }
2174         lpfc_cleanup_node(vport, ndlp);
2175
2176         /*
2177          * We can get here with a non-NULL ndlp->rport because when we
2178          * unregister a rport we don't break the rport/node linkage.  So if we
2179          * do, make sure we don't leaving any dangling pointers behind.
2180          */
2181         if (ndlp->rport) {
2182                 rdata = ndlp->rport->dd_data;
2183                 rdata->pnode = NULL;
2184                 ndlp->rport = NULL;
2185         }
2186 }
2187
2188 static int
2189 lpfc_matchdid(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2190               uint32_t did)
2191 {
2192         D_ID mydid, ndlpdid, matchdid;
2193
2194         if (did == Bcast_DID)
2195                 return 0;
2196
2197         /* First check for Direct match */
2198         if (ndlp->nlp_DID == did)
2199                 return 1;
2200
2201         /* Next check for area/domain identically equals 0 match */
2202         mydid.un.word = vport->fc_myDID;
2203         if ((mydid.un.b.domain == 0) && (mydid.un.b.area == 0)) {
2204                 return 0;
2205         }
2206
2207         matchdid.un.word = did;
2208         ndlpdid.un.word = ndlp->nlp_DID;
2209         if (matchdid.un.b.id == ndlpdid.un.b.id) {
2210                 if ((mydid.un.b.domain == matchdid.un.b.domain) &&
2211                     (mydid.un.b.area == matchdid.un.b.area)) {
2212                         if ((ndlpdid.un.b.domain == 0) &&
2213                             (ndlpdid.un.b.area == 0)) {
2214                                 if (ndlpdid.un.b.id)
2215                                         return 1;
2216                         }
2217                         return 0;
2218                 }
2219
2220                 matchdid.un.word = ndlp->nlp_DID;
2221                 if ((mydid.un.b.domain == ndlpdid.un.b.domain) &&
2222                     (mydid.un.b.area == ndlpdid.un.b.area)) {
2223                         if ((matchdid.un.b.domain == 0) &&
2224                             (matchdid.un.b.area == 0)) {
2225                                 if (matchdid.un.b.id)
2226                                         return 1;
2227                         }
2228                 }
2229         }
2230         return 0;
2231 }
2232
2233 /* Search for a nodelist entry */
2234 static struct lpfc_nodelist *
2235 __lpfc_findnode_did(struct lpfc_vport *vport, uint32_t did)
2236 {
2237         struct lpfc_nodelist *ndlp;
2238         uint32_t data1;
2239
2240         list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
2241                 if (lpfc_matchdid(vport, ndlp, did)) {
2242                         data1 = (((uint32_t) ndlp->nlp_state << 24) |
2243                                  ((uint32_t) ndlp->nlp_xri << 16) |
2244                                  ((uint32_t) ndlp->nlp_type << 8) |
2245                                  ((uint32_t) ndlp->nlp_rpi & 0xff));
2246                         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
2247                                          "0929 FIND node DID "
2248                                          "Data: x%p x%x x%x x%x\n",
2249                                          ndlp, ndlp->nlp_DID,
2250                                          ndlp->nlp_flag, data1);
2251                         return ndlp;
2252                 }
2253         }
2254
2255         /* FIND node did <did> NOT FOUND */
2256         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
2257                          "0932 FIND node did x%x NOT FOUND.\n", did);
2258         return NULL;
2259 }
2260
2261 struct lpfc_nodelist *
2262 lpfc_findnode_did(struct lpfc_vport *vport, uint32_t did)
2263 {
2264         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2265         struct lpfc_nodelist *ndlp;
2266
2267         spin_lock_irq(shost->host_lock);
2268         ndlp = __lpfc_findnode_did(vport, did);
2269         spin_unlock_irq(shost->host_lock);
2270         return ndlp;
2271 }
2272
2273 struct lpfc_nodelist *
2274 lpfc_setup_disc_node(struct lpfc_vport *vport, uint32_t did)
2275 {
2276         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2277         struct lpfc_nodelist *ndlp;
2278
2279         ndlp = lpfc_findnode_did(vport, did);
2280         if (!ndlp) {
2281                 if ((vport->fc_flag & FC_RSCN_MODE) != 0 &&
2282                     lpfc_rscn_payload_check(vport, did) == 0)
2283                         return NULL;
2284                 ndlp = (struct lpfc_nodelist *)
2285                      mempool_alloc(vport->phba->nlp_mem_pool, GFP_KERNEL);
2286                 if (!ndlp)
2287                         return NULL;
2288                 lpfc_nlp_init(vport, ndlp, did);
2289                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
2290                 spin_lock_irq(shost->host_lock);
2291                 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
2292                 spin_unlock_irq(shost->host_lock);
2293                 return ndlp;
2294         } else if (!NLP_CHK_NODE_ACT(ndlp)) {
2295                 ndlp = lpfc_enable_node(vport, ndlp, NLP_STE_NPR_NODE);
2296                 if (!ndlp)
2297                         return NULL;
2298                 spin_lock_irq(shost->host_lock);
2299                 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
2300                 spin_unlock_irq(shost->host_lock);
2301                 return ndlp;
2302         }
2303
2304         if ((vport->fc_flag & FC_RSCN_MODE) &&
2305             !(vport->fc_flag & FC_NDISC_ACTIVE)) {
2306                 if (lpfc_rscn_payload_check(vport, did)) {
2307                         /* If we've already recieved a PLOGI from this NPort
2308                          * we don't need to try to discover it again.
2309                          */
2310                         if (ndlp->nlp_flag & NLP_RCV_PLOGI)
2311                                 return NULL;
2312
2313                         spin_lock_irq(shost->host_lock);
2314                         ndlp->nlp_flag |= NLP_NPR_2B_DISC;
2315                         spin_unlock_irq(shost->host_lock);
2316
2317                         /* Since this node is marked for discovery,
2318                          * delay timeout is not needed.
2319                          */
2320                         lpfc_cancel_retry_delay_tmo(vport, ndlp);
2321                 } else
2322                         ndlp = NULL;
2323         } else {
2324                 /* If we've already recieved a PLOGI from this NPort,
2325                  * or we are already in the process of discovery on it,
2326                  * we don't need to try to discover it again.
2327                  */
2328                 if (ndlp->nlp_state == NLP_STE_ADISC_ISSUE ||
2329                     ndlp->nlp_state == NLP_STE_PLOGI_ISSUE ||
2330                     ndlp->nlp_flag & NLP_RCV_PLOGI)
2331                         return NULL;
2332                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
2333                 spin_lock_irq(shost->host_lock);
2334                 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
2335                 spin_unlock_irq(shost->host_lock);
2336         }
2337         return ndlp;
2338 }
2339
2340 /* Build a list of nodes to discover based on the loopmap */
2341 void
2342 lpfc_disc_list_loopmap(struct lpfc_vport *vport)
2343 {
2344         struct lpfc_hba  *phba = vport->phba;
2345         int j;
2346         uint32_t alpa, index;
2347
2348         if (!lpfc_is_link_up(phba))
2349                 return;
2350
2351         if (phba->fc_topology != TOPOLOGY_LOOP)
2352                 return;
2353
2354         /* Check for loop map present or not */
2355         if (phba->alpa_map[0]) {
2356                 for (j = 1; j <= phba->alpa_map[0]; j++) {
2357                         alpa = phba->alpa_map[j];
2358                         if (((vport->fc_myDID & 0xff) == alpa) || (alpa == 0))
2359                                 continue;
2360                         lpfc_setup_disc_node(vport, alpa);
2361                 }
2362         } else {
2363                 /* No alpamap, so try all alpa's */
2364                 for (j = 0; j < FC_MAXLOOP; j++) {
2365                         /* If cfg_scan_down is set, start from highest
2366                          * ALPA (0xef) to lowest (0x1).
2367                          */
2368                         if (vport->cfg_scan_down)
2369                                 index = j;
2370                         else
2371                                 index = FC_MAXLOOP - j - 1;
2372                         alpa = lpfcAlpaArray[index];
2373                         if ((vport->fc_myDID & 0xff) == alpa)
2374                                 continue;
2375                         lpfc_setup_disc_node(vport, alpa);
2376                 }
2377         }
2378         return;
2379 }
2380
2381 void
2382 lpfc_issue_clear_la(struct lpfc_hba *phba, struct lpfc_vport *vport)
2383 {
2384         LPFC_MBOXQ_t *mbox;
2385         struct lpfc_sli *psli = &phba->sli;
2386         struct lpfc_sli_ring *extra_ring = &psli->ring[psli->extra_ring];
2387         struct lpfc_sli_ring *fcp_ring   = &psli->ring[psli->fcp_ring];
2388         struct lpfc_sli_ring *next_ring  = &psli->ring[psli->next_ring];
2389         int  rc;
2390
2391         /*
2392          * if it's not a physical port or if we already send
2393          * clear_la then don't send it.
2394          */
2395         if ((phba->link_state >= LPFC_CLEAR_LA) ||
2396             (vport->port_type != LPFC_PHYSICAL_PORT))
2397                 return;
2398
2399                         /* Link up discovery */
2400         if ((mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL)) != NULL) {
2401                 phba->link_state = LPFC_CLEAR_LA;
2402                 lpfc_clear_la(phba, mbox);
2403                 mbox->mbox_cmpl = lpfc_mbx_cmpl_clear_la;
2404                 mbox->vport = vport;
2405                 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
2406                 if (rc == MBX_NOT_FINISHED) {
2407                         mempool_free(mbox, phba->mbox_mem_pool);
2408                         lpfc_disc_flush_list(vport);
2409                         extra_ring->flag &= ~LPFC_STOP_IOCB_EVENT;
2410                         fcp_ring->flag &= ~LPFC_STOP_IOCB_EVENT;
2411                         next_ring->flag &= ~LPFC_STOP_IOCB_EVENT;
2412                         phba->link_state = LPFC_HBA_ERROR;
2413                 }
2414         }
2415 }
2416
2417 /* Reg_vpi to tell firmware to resume normal operations */
2418 void
2419 lpfc_issue_reg_vpi(struct lpfc_hba *phba, struct lpfc_vport *vport)
2420 {
2421         LPFC_MBOXQ_t *regvpimbox;
2422
2423         regvpimbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
2424         if (regvpimbox) {
2425                 lpfc_reg_vpi(phba, vport->vpi, vport->fc_myDID, regvpimbox);
2426                 regvpimbox->mbox_cmpl = lpfc_mbx_cmpl_reg_vpi;
2427                 regvpimbox->vport = vport;
2428                 if (lpfc_sli_issue_mbox(phba, regvpimbox, MBX_NOWAIT)
2429                                         == MBX_NOT_FINISHED) {
2430                         mempool_free(regvpimbox, phba->mbox_mem_pool);
2431                 }
2432         }
2433 }
2434
2435 /* Start Link up / RSCN discovery on NPR nodes */
2436 void
2437 lpfc_disc_start(struct lpfc_vport *vport)
2438 {
2439         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2440         struct lpfc_hba  *phba = vport->phba;
2441         uint32_t num_sent;
2442         uint32_t clear_la_pending;
2443         int did_changed;
2444
2445         if (!lpfc_is_link_up(phba))
2446                 return;
2447
2448         if (phba->link_state == LPFC_CLEAR_LA)
2449                 clear_la_pending = 1;
2450         else
2451                 clear_la_pending = 0;
2452
2453         if (vport->port_state < LPFC_VPORT_READY)
2454                 vport->port_state = LPFC_DISC_AUTH;
2455
2456         lpfc_set_disctmo(vport);
2457
2458         if (vport->fc_prevDID == vport->fc_myDID)
2459                 did_changed = 0;
2460         else
2461                 did_changed = 1;
2462
2463         vport->fc_prevDID = vport->fc_myDID;
2464         vport->num_disc_nodes = 0;
2465
2466         /* Start Discovery state <hba_state> */
2467         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
2468                          "0202 Start Discovery hba state x%x "
2469                          "Data: x%x x%x x%x\n",
2470                          vport->port_state, vport->fc_flag, vport->fc_plogi_cnt,
2471                          vport->fc_adisc_cnt);
2472
2473         /* First do ADISCs - if any */
2474         num_sent = lpfc_els_disc_adisc(vport);
2475
2476         if (num_sent)
2477                 return;
2478
2479         /*
2480          * For SLI3, cmpl_reg_vpi will set port_state to READY, and
2481          * continue discovery.
2482          */
2483         if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
2484             !(vport->fc_flag & FC_PT2PT) &&
2485             !(vport->fc_flag & FC_RSCN_MODE)) {
2486                 lpfc_issue_reg_vpi(phba, vport);
2487                 return;
2488         }
2489
2490         /*
2491          * For SLI2, we need to set port_state to READY and continue
2492          * discovery.
2493          */
2494         if (vport->port_state < LPFC_VPORT_READY && !clear_la_pending) {
2495                 /* If we get here, there is nothing to ADISC */
2496                 if (vport->port_type == LPFC_PHYSICAL_PORT)
2497                         lpfc_issue_clear_la(phba, vport);
2498
2499                 if (!(vport->fc_flag & FC_ABORT_DISCOVERY)) {
2500                         vport->num_disc_nodes = 0;
2501                         /* go thru NPR nodes and issue ELS PLOGIs */
2502                         if (vport->fc_npr_cnt)
2503                                 lpfc_els_disc_plogi(vport);
2504
2505                         if (!vport->num_disc_nodes) {
2506                                 spin_lock_irq(shost->host_lock);
2507                                 vport->fc_flag &= ~FC_NDISC_ACTIVE;
2508                                 spin_unlock_irq(shost->host_lock);
2509                                 lpfc_can_disctmo(vport);
2510                         }
2511                 }
2512                 vport->port_state = LPFC_VPORT_READY;
2513         } else {
2514                 /* Next do PLOGIs - if any */
2515                 num_sent = lpfc_els_disc_plogi(vport);
2516
2517                 if (num_sent)
2518                         return;
2519
2520                 if (vport->fc_flag & FC_RSCN_MODE) {
2521                         /* Check to see if more RSCNs came in while we
2522                          * were processing this one.
2523                          */
2524                         if ((vport->fc_rscn_id_cnt == 0) &&
2525                             (!(vport->fc_flag & FC_RSCN_DISCOVERY))) {
2526                                 spin_lock_irq(shost->host_lock);
2527                                 vport->fc_flag &= ~FC_RSCN_MODE;
2528                                 spin_unlock_irq(shost->host_lock);
2529                                 lpfc_can_disctmo(vport);
2530                         } else
2531                                 lpfc_els_handle_rscn(vport);
2532                 }
2533         }
2534         return;
2535 }
2536
2537 /*
2538  *  Ignore completion for all IOCBs on tx and txcmpl queue for ELS
2539  *  ring the match the sppecified nodelist.
2540  */
2541 static void
2542 lpfc_free_tx(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
2543 {
2544         LIST_HEAD(completions);
2545         struct lpfc_sli *psli;
2546         IOCB_t     *icmd;
2547         struct lpfc_iocbq    *iocb, *next_iocb;
2548         struct lpfc_sli_ring *pring;
2549
2550         psli = &phba->sli;
2551         pring = &psli->ring[LPFC_ELS_RING];
2552
2553         /* Error matching iocb on txq or txcmplq
2554          * First check the txq.
2555          */
2556         spin_lock_irq(&phba->hbalock);
2557         list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) {
2558                 if (iocb->context1 != ndlp) {
2559                         continue;
2560                 }
2561                 icmd = &iocb->iocb;
2562                 if ((icmd->ulpCommand == CMD_ELS_REQUEST64_CR) ||
2563                     (icmd->ulpCommand == CMD_XMIT_ELS_RSP64_CX)) {
2564
2565                         list_move_tail(&iocb->list, &completions);
2566                         pring->txq_cnt--;
2567                 }
2568         }
2569
2570         /* Next check the txcmplq */
2571         list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq, list) {
2572                 if (iocb->context1 != ndlp) {
2573                         continue;
2574                 }
2575                 icmd = &iocb->iocb;
2576                 if (icmd->ulpCommand == CMD_ELS_REQUEST64_CR ||
2577                     icmd->ulpCommand == CMD_XMIT_ELS_RSP64_CX) {
2578                         lpfc_sli_issue_abort_iotag(phba, pring, iocb);
2579                 }
2580         }
2581         spin_unlock_irq(&phba->hbalock);
2582
2583         while (!list_empty(&completions)) {
2584                 iocb = list_get_first(&completions, struct lpfc_iocbq, list);
2585                 list_del_init(&iocb->list);
2586
2587                 if (!iocb->iocb_cmpl)
2588                         lpfc_sli_release_iocbq(phba, iocb);
2589                 else {
2590                         icmd = &iocb->iocb;
2591                         icmd->ulpStatus = IOSTAT_LOCAL_REJECT;
2592                         icmd->un.ulpWord[4] = IOERR_SLI_ABORTED;
2593                         (iocb->iocb_cmpl) (phba, iocb, iocb);
2594                 }
2595         }
2596 }
2597
2598 static void
2599 lpfc_disc_flush_list(struct lpfc_vport *vport)
2600 {
2601         struct lpfc_nodelist *ndlp, *next_ndlp;
2602         struct lpfc_hba *phba = vport->phba;
2603
2604         if (vport->fc_plogi_cnt || vport->fc_adisc_cnt) {
2605                 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes,
2606                                          nlp_listp) {
2607                         if (!NLP_CHK_NODE_ACT(ndlp))
2608                                 continue;
2609                         if (ndlp->nlp_state == NLP_STE_PLOGI_ISSUE ||
2610                             ndlp->nlp_state == NLP_STE_ADISC_ISSUE) {
2611                                 lpfc_free_tx(phba, ndlp);
2612                         }
2613                 }
2614         }
2615 }
2616
2617 void
2618 lpfc_cleanup_discovery_resources(struct lpfc_vport *vport)
2619 {
2620         lpfc_els_flush_rscn(vport);
2621         lpfc_els_flush_cmd(vport);
2622         lpfc_disc_flush_list(vport);
2623 }
2624
2625 /*****************************************************************************/
2626 /*
2627  * NAME:     lpfc_disc_timeout
2628  *
2629  * FUNCTION: Fibre Channel driver discovery timeout routine.
2630  *
2631  * EXECUTION ENVIRONMENT: interrupt only
2632  *
2633  * CALLED FROM:
2634  *      Timer function
2635  *
2636  * RETURNS:
2637  *      none
2638  */
2639 /*****************************************************************************/
2640 void
2641 lpfc_disc_timeout(unsigned long ptr)
2642 {
2643         struct lpfc_vport *vport = (struct lpfc_vport *) ptr;
2644         struct lpfc_hba   *phba = vport->phba;
2645         uint32_t tmo_posted;
2646         unsigned long flags = 0;
2647
2648         if (unlikely(!phba))
2649                 return;
2650
2651         spin_lock_irqsave(&vport->work_port_lock, flags);
2652         tmo_posted = vport->work_port_events & WORKER_DISC_TMO;
2653         if (!tmo_posted)
2654                 vport->work_port_events |= WORKER_DISC_TMO;
2655         spin_unlock_irqrestore(&vport->work_port_lock, flags);
2656
2657         if (!tmo_posted)
2658                 lpfc_worker_wake_up(phba);
2659         return;
2660 }
2661
2662 static void
2663 lpfc_disc_timeout_handler(struct lpfc_vport *vport)
2664 {
2665         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2666         struct lpfc_hba  *phba = vport->phba;
2667         struct lpfc_sli  *psli = &phba->sli;
2668         struct lpfc_nodelist *ndlp, *next_ndlp;
2669         LPFC_MBOXQ_t *initlinkmbox;
2670         int rc, clrlaerr = 0;
2671
2672         if (!(vport->fc_flag & FC_DISC_TMO))
2673                 return;
2674
2675         spin_lock_irq(shost->host_lock);
2676         vport->fc_flag &= ~FC_DISC_TMO;
2677         spin_unlock_irq(shost->host_lock);
2678
2679         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
2680                 "disc timeout:    state:x%x rtry:x%x flg:x%x",
2681                 vport->port_state, vport->fc_ns_retry, vport->fc_flag);
2682
2683         switch (vport->port_state) {
2684
2685         case LPFC_LOCAL_CFG_LINK:
2686         /* port_state is identically  LPFC_LOCAL_CFG_LINK while waiting for
2687          * FAN
2688          */
2689                                 /* FAN timeout */
2690                 lpfc_printf_vlog(vport, KERN_WARNING, LOG_DISCOVERY,
2691                                  "0221 FAN timeout\n");
2692                 /* Start discovery by sending FLOGI, clean up old rpis */
2693                 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes,
2694                                          nlp_listp) {
2695                         if (!NLP_CHK_NODE_ACT(ndlp))
2696                                 continue;
2697                         if (ndlp->nlp_state != NLP_STE_NPR_NODE)
2698                                 continue;
2699                         if (ndlp->nlp_type & NLP_FABRIC) {
2700                                 /* Clean up the ndlp on Fabric connections */
2701                                 lpfc_drop_node(vport, ndlp);
2702
2703                         } else if (!(ndlp->nlp_flag & NLP_NPR_ADISC)) {
2704                                 /* Fail outstanding IO now since device
2705                                  * is marked for PLOGI.
2706                                  */
2707                                 lpfc_unreg_rpi(vport, ndlp);
2708                         }
2709                 }
2710                 if (vport->port_state != LPFC_FLOGI) {
2711                         lpfc_initial_flogi(vport);
2712                         return;
2713                 }
2714                 break;
2715
2716         case LPFC_FDISC:
2717         case LPFC_FLOGI:
2718         /* port_state is identically LPFC_FLOGI while waiting for FLOGI cmpl */
2719                 /* Initial FLOGI timeout */
2720                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
2721                                  "0222 Initial %s timeout\n",
2722                                  vport->vpi ? "FDISC" : "FLOGI");
2723
2724                 /* Assume no Fabric and go on with discovery.
2725                  * Check for outstanding ELS FLOGI to abort.
2726                  */
2727
2728                 /* FLOGI failed, so just use loop map to make discovery list */
2729                 lpfc_disc_list_loopmap(vport);
2730
2731                 /* Start discovery */
2732                 lpfc_disc_start(vport);
2733                 break;
2734
2735         case LPFC_FABRIC_CFG_LINK:
2736         /* hba_state is identically LPFC_FABRIC_CFG_LINK while waiting for
2737            NameServer login */
2738                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
2739                                  "0223 Timeout while waiting for "
2740                                  "NameServer login\n");
2741                 /* Next look for NameServer ndlp */
2742                 ndlp = lpfc_findnode_did(vport, NameServer_DID);
2743                 if (ndlp && NLP_CHK_NODE_ACT(ndlp))
2744                         lpfc_els_abort(phba, ndlp);
2745
2746                 /* ReStart discovery */
2747                 goto restart_disc;
2748
2749         case LPFC_NS_QRY:
2750         /* Check for wait for NameServer Rsp timeout */
2751                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
2752                                  "0224 NameServer Query timeout "
2753                                  "Data: x%x x%x\n",
2754                                  vport->fc_ns_retry, LPFC_MAX_NS_RETRY);
2755
2756                 if (vport->fc_ns_retry < LPFC_MAX_NS_RETRY) {
2757                         /* Try it one more time */
2758                         vport->fc_ns_retry++;
2759                         rc = lpfc_ns_cmd(vport, SLI_CTNS_GID_FT,
2760                                          vport->fc_ns_retry, 0);
2761                         if (rc == 0)
2762                                 break;
2763                 }
2764                 vport->fc_ns_retry = 0;
2765
2766 restart_disc:
2767                 /*
2768                  * Discovery is over.
2769                  * set port_state to PORT_READY if SLI2.
2770                  * cmpl_reg_vpi will set port_state to READY for SLI3.
2771                  */
2772                 if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)
2773                         lpfc_issue_reg_vpi(phba, vport);
2774                 else  { /* NPIV Not enabled */
2775                         lpfc_issue_clear_la(phba, vport);
2776                         vport->port_state = LPFC_VPORT_READY;
2777                 }
2778
2779                 /* Setup and issue mailbox INITIALIZE LINK command */
2780                 initlinkmbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
2781                 if (!initlinkmbox) {
2782                         lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
2783                                          "0206 Device Discovery "
2784                                          "completion error\n");
2785                         phba->link_state = LPFC_HBA_ERROR;
2786                         break;
2787                 }
2788
2789                 lpfc_linkdown(phba);
2790                 lpfc_init_link(phba, initlinkmbox, phba->cfg_topology,
2791                                phba->cfg_link_speed);
2792                 initlinkmbox->mb.un.varInitLnk.lipsr_AL_PA = 0;
2793                 initlinkmbox->vport = vport;
2794                 initlinkmbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
2795                 rc = lpfc_sli_issue_mbox(phba, initlinkmbox, MBX_NOWAIT);
2796                 lpfc_set_loopback_flag(phba);
2797                 if (rc == MBX_NOT_FINISHED)
2798                         mempool_free(initlinkmbox, phba->mbox_mem_pool);
2799
2800                 break;
2801
2802         case LPFC_DISC_AUTH:
2803         /* Node Authentication timeout */
2804                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
2805                                  "0227 Node Authentication timeout\n");
2806                 lpfc_disc_flush_list(vport);
2807
2808                 /*
2809                  * set port_state to PORT_READY if SLI2.
2810                  * cmpl_reg_vpi will set port_state to READY for SLI3.
2811                  */
2812                 if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)
2813                         lpfc_issue_reg_vpi(phba, vport);
2814                 else {  /* NPIV Not enabled */
2815                         lpfc_issue_clear_la(phba, vport);
2816                         vport->port_state = LPFC_VPORT_READY;
2817                 }
2818                 break;
2819
2820         case LPFC_VPORT_READY:
2821                 if (vport->fc_flag & FC_RSCN_MODE) {
2822                         lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
2823                                          "0231 RSCN timeout Data: x%x "
2824                                          "x%x\n",
2825                                          vport->fc_ns_retry, LPFC_MAX_NS_RETRY);
2826
2827                         /* Cleanup any outstanding ELS commands */
2828                         lpfc_els_flush_cmd(vport);
2829
2830                         lpfc_els_flush_rscn(vport);
2831                         lpfc_disc_flush_list(vport);
2832                 }
2833                 break;
2834
2835         default:
2836                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
2837                                  "0273 Unexpected discovery timeout, "
2838                                  "vport State x%x\n", vport->port_state);
2839                 break;
2840         }
2841
2842         switch (phba->link_state) {
2843         case LPFC_CLEAR_LA:
2844                                 /* CLEAR LA timeout */
2845                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
2846                                  "0228 CLEAR LA timeout\n");
2847                 clrlaerr = 1;
2848                 break;
2849
2850         case LPFC_LINK_UP:
2851                 lpfc_issue_clear_la(phba, vport);
2852                 /* Drop thru */
2853         case LPFC_LINK_UNKNOWN:
2854         case LPFC_WARM_START:
2855         case LPFC_INIT_START:
2856         case LPFC_INIT_MBX_CMDS:
2857         case LPFC_LINK_DOWN:
2858         case LPFC_HBA_ERROR:
2859                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
2860                                  "0230 Unexpected timeout, hba link "
2861                                  "state x%x\n", phba->link_state);
2862                 clrlaerr = 1;
2863                 break;
2864
2865         case LPFC_HBA_READY:
2866                 break;
2867         }
2868
2869         if (clrlaerr) {
2870                 lpfc_disc_flush_list(vport);
2871                 psli->ring[(psli->extra_ring)].flag &= ~LPFC_STOP_IOCB_EVENT;
2872                 psli->ring[(psli->fcp_ring)].flag &= ~LPFC_STOP_IOCB_EVENT;
2873                 psli->ring[(psli->next_ring)].flag &= ~LPFC_STOP_IOCB_EVENT;
2874                 vport->port_state = LPFC_VPORT_READY;
2875         }
2876
2877         return;
2878 }
2879
2880 /*
2881  * This routine handles processing a NameServer REG_LOGIN mailbox
2882  * command upon completion. It is setup in the LPFC_MBOXQ
2883  * as the completion routine when the command is
2884  * handed off to the SLI layer.
2885  */
2886 void
2887 lpfc_mbx_cmpl_fdmi_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
2888 {
2889         MAILBOX_t *mb = &pmb->mb;
2890         struct lpfc_dmabuf   *mp = (struct lpfc_dmabuf *) (pmb->context1);
2891         struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) pmb->context2;
2892         struct lpfc_vport    *vport = pmb->vport;
2893
2894         pmb->context1 = NULL;
2895
2896         ndlp->nlp_rpi = mb->un.varWords[0];
2897         ndlp->nlp_type |= NLP_FABRIC;
2898         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
2899
2900         /*
2901          * Start issuing Fabric-Device Management Interface (FDMI) command to
2902          * 0xfffffa (FDMI well known port) or Delay issuing FDMI command if
2903          * fdmi-on=2 (supporting RPA/hostnmae)
2904          */
2905
2906         if (vport->cfg_fdmi_on == 1)
2907                 lpfc_fdmi_cmd(vport, ndlp, SLI_MGMT_DHBA);
2908         else
2909                 mod_timer(&vport->fc_fdmitmo, jiffies + HZ * 60);
2910
2911         /* decrement the node reference count held for this callback
2912          * function.
2913          */
2914         lpfc_nlp_put(ndlp);
2915         lpfc_mbuf_free(phba, mp->virt, mp->phys);
2916         kfree(mp);
2917         mempool_free(pmb, phba->mbox_mem_pool);
2918
2919         return;
2920 }
2921
2922 static int
2923 lpfc_filter_by_rpi(struct lpfc_nodelist *ndlp, void *param)
2924 {
2925         uint16_t *rpi = param;
2926
2927         return ndlp->nlp_rpi == *rpi;
2928 }
2929
2930 static int
2931 lpfc_filter_by_wwpn(struct lpfc_nodelist *ndlp, void *param)
2932 {
2933         return memcmp(&ndlp->nlp_portname, param,
2934                       sizeof(ndlp->nlp_portname)) == 0;
2935 }
2936
2937 static struct lpfc_nodelist *
2938 __lpfc_find_node(struct lpfc_vport *vport, node_filter filter, void *param)
2939 {
2940         struct lpfc_nodelist *ndlp;
2941
2942         list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
2943                 if (filter(ndlp, param))
2944                         return ndlp;
2945         }
2946         return NULL;
2947 }
2948
2949 /*
2950  * This routine looks up the ndlp lists for the given RPI. If rpi found it
2951  * returns the node list element pointer else return NULL.
2952  */
2953 struct lpfc_nodelist *
2954 __lpfc_findnode_rpi(struct lpfc_vport *vport, uint16_t rpi)
2955 {
2956         return __lpfc_find_node(vport, lpfc_filter_by_rpi, &rpi);
2957 }
2958
2959 /*
2960  * This routine looks up the ndlp lists for the given WWPN. If WWPN found it
2961  * returns the node element list pointer else return NULL.
2962  */
2963 struct lpfc_nodelist *
2964 lpfc_findnode_wwpn(struct lpfc_vport *vport, struct lpfc_name *wwpn)
2965 {
2966         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2967         struct lpfc_nodelist *ndlp;
2968
2969         spin_lock_irq(shost->host_lock);
2970         ndlp = __lpfc_find_node(vport, lpfc_filter_by_wwpn, wwpn);
2971         spin_unlock_irq(shost->host_lock);
2972         return ndlp;
2973 }
2974
2975 void
2976 lpfc_nlp_init(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2977               uint32_t did)
2978 {
2979         memset(ndlp, 0, sizeof (struct lpfc_nodelist));
2980         INIT_LIST_HEAD(&ndlp->els_retry_evt.evt_listp);
2981         INIT_LIST_HEAD(&ndlp->dev_loss_evt.evt_listp);
2982         init_timer(&ndlp->nlp_delayfunc);
2983         ndlp->nlp_delayfunc.function = lpfc_els_retry_delay;
2984         ndlp->nlp_delayfunc.data = (unsigned long)ndlp;
2985         ndlp->nlp_DID = did;
2986         ndlp->vport = vport;
2987         ndlp->nlp_sid = NLP_NO_SID;
2988         INIT_LIST_HEAD(&ndlp->nlp_listp);
2989         kref_init(&ndlp->kref);
2990         NLP_INT_NODE_ACT(ndlp);
2991
2992         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE,
2993                 "node init:       did:x%x",
2994                 ndlp->nlp_DID, 0, 0);
2995
2996         return;
2997 }
2998
2999 /* This routine releases all resources associated with a specifc NPort's ndlp
3000  * and mempool_free's the nodelist.
3001  */
3002 static void
3003 lpfc_nlp_release(struct kref *kref)
3004 {
3005         struct lpfc_hba *phba;
3006         unsigned long flags;
3007         struct lpfc_nodelist *ndlp = container_of(kref, struct lpfc_nodelist,
3008                                                   kref);
3009
3010         lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
3011                 "node release:    did:x%x flg:x%x type:x%x",
3012                 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type);
3013
3014         lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_NODE,
3015                         "0279 lpfc_nlp_release: ndlp:x%p "
3016                         "usgmap:x%x refcnt:%d\n",
3017                         (void *)ndlp, ndlp->nlp_usg_map,
3018                         atomic_read(&ndlp->kref.refcount));
3019
3020         /* remove ndlp from action. */
3021         lpfc_nlp_remove(ndlp->vport, ndlp);
3022
3023         /* clear the ndlp active flag for all release cases */
3024         phba = ndlp->vport->phba;
3025         spin_lock_irqsave(&phba->ndlp_lock, flags);
3026         NLP_CLR_NODE_ACT(ndlp);
3027         spin_unlock_irqrestore(&phba->ndlp_lock, flags);
3028
3029         /* free ndlp memory for final ndlp release */
3030         if (NLP_CHK_FREE_REQ(ndlp))
3031                 mempool_free(ndlp, ndlp->vport->phba->nlp_mem_pool);
3032 }
3033
3034 /* This routine bumps the reference count for a ndlp structure to ensure
3035  * that one discovery thread won't free a ndlp while another discovery thread
3036  * is using it.
3037  */
3038 struct lpfc_nodelist *
3039 lpfc_nlp_get(struct lpfc_nodelist *ndlp)
3040 {
3041         struct lpfc_hba *phba;
3042         unsigned long flags;
3043
3044         if (ndlp) {
3045                 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
3046                         "node get:        did:x%x flg:x%x refcnt:x%x",
3047                         ndlp->nlp_DID, ndlp->nlp_flag,
3048                         atomic_read(&ndlp->kref.refcount));
3049                 /* The check of ndlp usage to prevent incrementing the
3050                  * ndlp reference count that is in the process of being
3051                  * released.
3052                  */
3053                 phba = ndlp->vport->phba;
3054                 spin_lock_irqsave(&phba->ndlp_lock, flags);
3055                 if (!NLP_CHK_NODE_ACT(ndlp) || NLP_CHK_FREE_ACK(ndlp)) {
3056                         spin_unlock_irqrestore(&phba->ndlp_lock, flags);
3057                         lpfc_printf_vlog(ndlp->vport, KERN_WARNING, LOG_NODE,
3058                                 "0276 lpfc_nlp_get: ndlp:x%p "
3059                                 "usgmap:x%x refcnt:%d\n",
3060                                 (void *)ndlp, ndlp->nlp_usg_map,
3061                                 atomic_read(&ndlp->kref.refcount));
3062                         return NULL;
3063                 } else
3064                         kref_get(&ndlp->kref);
3065                 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
3066         }
3067         return ndlp;
3068 }
3069
3070 /* This routine decrements the reference count for a ndlp structure. If the
3071  * count goes to 0, this indicates the the associated nodelist should be
3072  * freed. Returning 1 indicates the ndlp resource has been released; on the
3073  * other hand, returning 0 indicates the ndlp resource has not been released
3074  * yet.
3075  */
3076 int
3077 lpfc_nlp_put(struct lpfc_nodelist *ndlp)
3078 {
3079         struct lpfc_hba *phba;
3080         unsigned long flags;
3081
3082         if (!ndlp)
3083                 return 1;
3084
3085         lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
3086         "node put:        did:x%x flg:x%x refcnt:x%x",
3087                 ndlp->nlp_DID, ndlp->nlp_flag,
3088                 atomic_read(&ndlp->kref.refcount));
3089         phba = ndlp->vport->phba;
3090         spin_lock_irqsave(&phba->ndlp_lock, flags);
3091         /* Check the ndlp memory free acknowledge flag to avoid the
3092          * possible race condition that kref_put got invoked again
3093          * after previous one has done ndlp memory free.
3094          */
3095         if (NLP_CHK_FREE_ACK(ndlp)) {
3096                 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
3097                 lpfc_printf_vlog(ndlp->vport, KERN_WARNING, LOG_NODE,
3098                                 "0274 lpfc_nlp_put: ndlp:x%p "
3099                                 "usgmap:x%x refcnt:%d\n",
3100                                 (void *)ndlp, ndlp->nlp_usg_map,
3101                                 atomic_read(&ndlp->kref.refcount));
3102                 return 1;
3103         }
3104         /* Check the ndlp inactivate log flag to avoid the possible
3105          * race condition that kref_put got invoked again after ndlp
3106          * is already in inactivating state.
3107          */
3108         if (NLP_CHK_IACT_REQ(ndlp)) {
3109                 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
3110                 lpfc_printf_vlog(ndlp->vport, KERN_WARNING, LOG_NODE,
3111                                 "0275 lpfc_nlp_put: ndlp:x%p "
3112                                 "usgmap:x%x refcnt:%d\n",
3113                                 (void *)ndlp, ndlp->nlp_usg_map,
3114                                 atomic_read(&ndlp->kref.refcount));
3115                 return 1;
3116         }
3117         /* For last put, mark the ndlp usage flags to make sure no
3118          * other kref_get and kref_put on the same ndlp shall get
3119          * in between the process when the final kref_put has been
3120          * invoked on this ndlp.
3121          */
3122         if (atomic_read(&ndlp->kref.refcount) == 1) {
3123                 /* Indicate ndlp is put to inactive state. */
3124                 NLP_SET_IACT_REQ(ndlp);
3125                 /* Acknowledge ndlp memory free has been seen. */
3126                 if (NLP_CHK_FREE_REQ(ndlp))
3127                         NLP_SET_FREE_ACK(ndlp);
3128         }
3129         spin_unlock_irqrestore(&phba->ndlp_lock, flags);
3130         /* Note, the kref_put returns 1 when decrementing a reference
3131          * count that was 1, it invokes the release callback function,
3132          * but it still left the reference count as 1 (not actually
3133          * performs the last decrementation). Otherwise, it actually
3134          * decrements the reference count and returns 0.
3135          */
3136         return kref_put(&ndlp->kref, lpfc_nlp_release);
3137 }
3138
3139 /* This routine free's the specified nodelist if it is not in use
3140  * by any other discovery thread. This routine returns 1 if the
3141  * ndlp has been freed. A return value of 0 indicates the ndlp is
3142  * not yet been released.
3143  */
3144 int
3145 lpfc_nlp_not_used(struct lpfc_nodelist *ndlp)
3146 {
3147         lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
3148                 "node not used:   did:x%x flg:x%x refcnt:x%x",
3149                 ndlp->nlp_DID, ndlp->nlp_flag,
3150                 atomic_read(&ndlp->kref.refcount));
3151         if (atomic_read(&ndlp->kref.refcount) == 1)
3152                 if (lpfc_nlp_put(ndlp))
3153                         return 1;
3154         return 0;
3155 }