91fa65906173ff6c3391dd28827e4dd411c733b7
[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) 2004-2009 Emulex.  All rights reserved.           *
5  * EMULEX and SLI are trademarks of Emulex.                        *
6  * www.emulex.com                                                  *
7  * Portions Copyright (C) 2004-2005 Christoph Hellwig              *
8  *                                                                 *
9  * This program is free software; you can redistribute it and/or   *
10  * modify it under the terms of version 2 of the GNU General       *
11  * Public License as published by the Free Software Foundation.    *
12  * This program is distributed in the hope that it will be useful. *
13  * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND          *
14  * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY,  *
15  * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE      *
16  * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD *
17  * TO BE LEGALLY INVALID.  See the GNU General Public License for  *
18  * more details, a copy of which can be found in the file COPYING  *
19  * included with this package.                                     *
20  *******************************************************************/
21
22 #include <linux/blkdev.h>
23 #include <linux/delay.h>
24 #include <linux/slab.h>
25 #include <linux/pci.h>
26 #include <linux/kthread.h>
27 #include <linux/interrupt.h>
28
29 #include <scsi/scsi.h>
30 #include <scsi/scsi_device.h>
31 #include <scsi/scsi_host.h>
32 #include <scsi/scsi_transport_fc.h>
33
34 #include "lpfc_hw4.h"
35 #include "lpfc_hw.h"
36 #include "lpfc_nl.h"
37 #include "lpfc_disc.h"
38 #include "lpfc_sli.h"
39 #include "lpfc_sli4.h"
40 #include "lpfc_scsi.h"
41 #include "lpfc.h"
42 #include "lpfc_logmsg.h"
43 #include "lpfc_crtn.h"
44 #include "lpfc_vport.h"
45 #include "lpfc_debugfs.h"
46
47 /* AlpaArray for assignment of scsid for scan-down and bind_method */
48 static uint8_t lpfcAlpaArray[] = {
49         0xEF, 0xE8, 0xE4, 0xE2, 0xE1, 0xE0, 0xDC, 0xDA, 0xD9, 0xD6,
50         0xD5, 0xD4, 0xD3, 0xD2, 0xD1, 0xCE, 0xCD, 0xCC, 0xCB, 0xCA,
51         0xC9, 0xC7, 0xC6, 0xC5, 0xC3, 0xBC, 0xBA, 0xB9, 0xB6, 0xB5,
52         0xB4, 0xB3, 0xB2, 0xB1, 0xAE, 0xAD, 0xAC, 0xAB, 0xAA, 0xA9,
53         0xA7, 0xA6, 0xA5, 0xA3, 0x9F, 0x9E, 0x9D, 0x9B, 0x98, 0x97,
54         0x90, 0x8F, 0x88, 0x84, 0x82, 0x81, 0x80, 0x7C, 0x7A, 0x79,
55         0x76, 0x75, 0x74, 0x73, 0x72, 0x71, 0x6E, 0x6D, 0x6C, 0x6B,
56         0x6A, 0x69, 0x67, 0x66, 0x65, 0x63, 0x5C, 0x5A, 0x59, 0x56,
57         0x55, 0x54, 0x53, 0x52, 0x51, 0x4E, 0x4D, 0x4C, 0x4B, 0x4A,
58         0x49, 0x47, 0x46, 0x45, 0x43, 0x3C, 0x3A, 0x39, 0x36, 0x35,
59         0x34, 0x33, 0x32, 0x31, 0x2E, 0x2D, 0x2C, 0x2B, 0x2A, 0x29,
60         0x27, 0x26, 0x25, 0x23, 0x1F, 0x1E, 0x1D, 0x1B, 0x18, 0x17,
61         0x10, 0x0F, 0x08, 0x04, 0x02, 0x01
62 };
63
64 static void lpfc_disc_timeout_handler(struct lpfc_vport *);
65 static void lpfc_disc_flush_list(struct lpfc_vport *vport);
66 static void lpfc_unregister_fcfi_cmpl(struct lpfc_hba *, LPFC_MBOXQ_t *);
67 static int lpfc_fcf_inuse(struct lpfc_hba *);
68
69 void
70 lpfc_terminate_rport_io(struct fc_rport *rport)
71 {
72         struct lpfc_rport_data *rdata;
73         struct lpfc_nodelist * ndlp;
74         struct lpfc_hba *phba;
75
76         rdata = rport->dd_data;
77         ndlp = rdata->pnode;
78
79         if (!ndlp || !NLP_CHK_NODE_ACT(ndlp)) {
80                 if (rport->roles & FC_RPORT_ROLE_FCP_TARGET)
81                         printk(KERN_ERR "Cannot find remote node"
82                         " to terminate I/O Data x%x\n",
83                         rport->port_id);
84                 return;
85         }
86
87         phba  = ndlp->phba;
88
89         lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_RPORT,
90                 "rport terminate: sid:x%x did:x%x flg:x%x",
91                 ndlp->nlp_sid, ndlp->nlp_DID, ndlp->nlp_flag);
92
93         if (ndlp->nlp_sid != NLP_NO_SID) {
94                 lpfc_sli_abort_iocb(ndlp->vport,
95                         &phba->sli.ring[phba->sli.fcp_ring],
96                         ndlp->nlp_sid, 0, LPFC_CTX_TGT);
97         }
98 }
99
100 /*
101  * This function will be called when dev_loss_tmo fire.
102  */
103 void
104 lpfc_dev_loss_tmo_callbk(struct fc_rport *rport)
105 {
106         struct lpfc_rport_data *rdata;
107         struct lpfc_nodelist * ndlp;
108         struct lpfc_vport *vport;
109         struct lpfc_hba   *phba;
110         struct lpfc_work_evt *evtp;
111         int  put_node;
112         int  put_rport;
113
114         rdata = rport->dd_data;
115         ndlp = rdata->pnode;
116         if (!ndlp || !NLP_CHK_NODE_ACT(ndlp))
117                 return;
118
119         vport = ndlp->vport;
120         phba  = vport->phba;
121
122         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
123                 "rport devlosscb: sid:x%x did:x%x flg:x%x",
124                 ndlp->nlp_sid, ndlp->nlp_DID, ndlp->nlp_flag);
125
126         /* Don't defer this if we are in the process of deleting the vport
127          * or unloading the driver. The unload will cleanup the node
128          * appropriately we just need to cleanup the ndlp rport info here.
129          */
130         if (vport->load_flag & FC_UNLOADING) {
131                 put_node = rdata->pnode != NULL;
132                 put_rport = ndlp->rport != NULL;
133                 rdata->pnode = NULL;
134                 ndlp->rport = NULL;
135                 if (put_node)
136                         lpfc_nlp_put(ndlp);
137                 if (put_rport)
138                         put_device(&rport->dev);
139                 return;
140         }
141
142         if (ndlp->nlp_state == NLP_STE_MAPPED_NODE)
143                 return;
144
145         evtp = &ndlp->dev_loss_evt;
146
147         if (!list_empty(&evtp->evt_listp))
148                 return;
149
150         spin_lock_irq(&phba->hbalock);
151         /* We need to hold the node by incrementing the reference
152          * count until this queued work is done
153          */
154         evtp->evt_arg1  = lpfc_nlp_get(ndlp);
155         if (evtp->evt_arg1) {
156                 evtp->evt = LPFC_EVT_DEV_LOSS;
157                 list_add_tail(&evtp->evt_listp, &phba->work_list);
158                 lpfc_worker_wake_up(phba);
159         }
160         spin_unlock_irq(&phba->hbalock);
161
162         return;
163 }
164
165 /**
166  * lpfc_dev_loss_tmo_handler - Remote node devloss timeout handler
167  * @ndlp: Pointer to remote node object.
168  *
169  * This function is called from the worker thread when devloss timeout timer
170  * expires. For SLI4 host, this routine shall return 1 when at lease one
171  * remote node, including this @ndlp, is still in use of FCF; otherwise, this
172  * routine shall return 0 when there is no remote node is still in use of FCF
173  * when devloss timeout happened to this @ndlp.
174  **/
175 static int
176 lpfc_dev_loss_tmo_handler(struct lpfc_nodelist *ndlp)
177 {
178         struct lpfc_rport_data *rdata;
179         struct fc_rport   *rport;
180         struct lpfc_vport *vport;
181         struct lpfc_hba   *phba;
182         uint8_t *name;
183         int  put_node;
184         int  put_rport;
185         int warn_on = 0;
186         int fcf_inuse = 0;
187
188         rport = ndlp->rport;
189
190         if (!rport)
191                 return fcf_inuse;
192
193         rdata = rport->dd_data;
194         name = (uint8_t *) &ndlp->nlp_portname;
195         vport = ndlp->vport;
196         phba  = vport->phba;
197
198         if (phba->sli_rev == LPFC_SLI_REV4)
199                 fcf_inuse = lpfc_fcf_inuse(phba);
200
201         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
202                 "rport devlosstmo:did:x%x type:x%x id:x%x",
203                 ndlp->nlp_DID, ndlp->nlp_type, rport->scsi_target_id);
204
205         /* Don't defer this if we are in the process of deleting the vport
206          * or unloading the driver. The unload will cleanup the node
207          * appropriately we just need to cleanup the ndlp rport info here.
208          */
209         if (vport->load_flag & FC_UNLOADING) {
210                 if (ndlp->nlp_sid != NLP_NO_SID) {
211                         /* flush the target */
212                         lpfc_sli_abort_iocb(vport,
213                                         &phba->sli.ring[phba->sli.fcp_ring],
214                                         ndlp->nlp_sid, 0, LPFC_CTX_TGT);
215                 }
216                 put_node = rdata->pnode != NULL;
217                 put_rport = ndlp->rport != NULL;
218                 rdata->pnode = NULL;
219                 ndlp->rport = NULL;
220                 if (put_node)
221                         lpfc_nlp_put(ndlp);
222                 if (put_rport)
223                         put_device(&rport->dev);
224                 return fcf_inuse;
225         }
226
227         if (ndlp->nlp_state == NLP_STE_MAPPED_NODE) {
228                 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
229                                  "0284 Devloss timeout Ignored on "
230                                  "WWPN %x:%x:%x:%x:%x:%x:%x:%x "
231                                  "NPort x%x\n",
232                                  *name, *(name+1), *(name+2), *(name+3),
233                                  *(name+4), *(name+5), *(name+6), *(name+7),
234                                  ndlp->nlp_DID);
235                 return fcf_inuse;
236         }
237
238         if (ndlp->nlp_type & NLP_FABRIC) {
239                 /* We will clean up these Nodes in linkup */
240                 put_node = rdata->pnode != NULL;
241                 put_rport = ndlp->rport != NULL;
242                 rdata->pnode = NULL;
243                 ndlp->rport = NULL;
244                 if (put_node)
245                         lpfc_nlp_put(ndlp);
246                 if (put_rport)
247                         put_device(&rport->dev);
248                 return fcf_inuse;
249         }
250
251         if (ndlp->nlp_sid != NLP_NO_SID) {
252                 warn_on = 1;
253                 /* flush the target */
254                 lpfc_sli_abort_iocb(vport, &phba->sli.ring[phba->sli.fcp_ring],
255                                     ndlp->nlp_sid, 0, LPFC_CTX_TGT);
256         }
257
258         if (warn_on) {
259                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
260                                  "0203 Devloss timeout on "
261                                  "WWPN %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x "
262                                  "NPort x%06x Data: x%x x%x x%x\n",
263                                  *name, *(name+1), *(name+2), *(name+3),
264                                  *(name+4), *(name+5), *(name+6), *(name+7),
265                                  ndlp->nlp_DID, ndlp->nlp_flag,
266                                  ndlp->nlp_state, ndlp->nlp_rpi);
267         } else {
268                 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
269                                  "0204 Devloss timeout on "
270                                  "WWPN %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x "
271                                  "NPort x%06x Data: x%x x%x x%x\n",
272                                  *name, *(name+1), *(name+2), *(name+3),
273                                  *(name+4), *(name+5), *(name+6), *(name+7),
274                                  ndlp->nlp_DID, ndlp->nlp_flag,
275                                  ndlp->nlp_state, ndlp->nlp_rpi);
276         }
277
278         put_node = rdata->pnode != NULL;
279         put_rport = ndlp->rport != NULL;
280         rdata->pnode = NULL;
281         ndlp->rport = NULL;
282         if (put_node)
283                 lpfc_nlp_put(ndlp);
284         if (put_rport)
285                 put_device(&rport->dev);
286
287         if (!(vport->load_flag & FC_UNLOADING) &&
288             !(ndlp->nlp_flag & NLP_DELAY_TMO) &&
289             !(ndlp->nlp_flag & NLP_NPR_2B_DISC) &&
290             (ndlp->nlp_state != NLP_STE_UNMAPPED_NODE) &&
291             (ndlp->nlp_state != NLP_STE_REG_LOGIN_ISSUE) &&
292             (ndlp->nlp_state != NLP_STE_PRLI_ISSUE))
293                 lpfc_disc_state_machine(vport, ndlp, NULL, NLP_EVT_DEVICE_RM);
294
295         return fcf_inuse;
296 }
297
298 /**
299  * lpfc_sli4_post_dev_loss_tmo_handler - SLI4 post devloss timeout handler
300  * @phba: Pointer to hba context object.
301  * @fcf_inuse: SLI4 FCF in-use state reported from devloss timeout handler.
302  * @nlp_did: remote node identifer with devloss timeout.
303  *
304  * This function is called from the worker thread after invoking devloss
305  * timeout handler and releasing the reference count for the ndlp with
306  * which the devloss timeout was handled for SLI4 host. For the devloss
307  * timeout of the last remote node which had been in use of FCF, when this
308  * routine is invoked, it shall be guaranteed that none of the remote are
309  * in-use of FCF. When devloss timeout to the last remote using the FCF,
310  * if the FIP engine is neither in FCF table scan process nor roundrobin
311  * failover process, the in-use FCF shall be unregistered. If the FIP
312  * engine is in FCF discovery process, the devloss timeout state shall
313  * be set for either the FCF table scan process or roundrobin failover
314  * process to unregister the in-use FCF.
315  **/
316 static void
317 lpfc_sli4_post_dev_loss_tmo_handler(struct lpfc_hba *phba, int fcf_inuse,
318                                     uint32_t nlp_did)
319 {
320         /* If devloss timeout happened to a remote node when FCF had no
321          * longer been in-use, do nothing.
322          */
323         if (!fcf_inuse)
324                 return;
325
326         if ((phba->hba_flag & HBA_FIP_SUPPORT) && !lpfc_fcf_inuse(phba)) {
327                 spin_lock_irq(&phba->hbalock);
328                 if (phba->fcf.fcf_flag & FCF_DISCOVERY) {
329                         if (phba->hba_flag & HBA_DEVLOSS_TMO) {
330                                 spin_unlock_irq(&phba->hbalock);
331                                 return;
332                         }
333                         phba->hba_flag |= HBA_DEVLOSS_TMO;
334                         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
335                                         "2847 Last remote node (x%x) using "
336                                         "FCF devloss tmo\n", nlp_did);
337                 }
338                 if (phba->fcf.fcf_flag & FCF_REDISC_PROG) {
339                         spin_unlock_irq(&phba->hbalock);
340                         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
341                                         "2868 Devloss tmo to FCF rediscovery "
342                                         "in progress\n");
343                         return;
344                 }
345                 if (!(phba->hba_flag & (FCF_TS_INPROG | FCF_RR_INPROG))) {
346                         spin_unlock_irq(&phba->hbalock);
347                         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
348                                         "2869 Devloss tmo to idle FIP engine, "
349                                         "unreg in-use FCF and rescan.\n");
350                         /* Unregister in-use FCF and rescan */
351                         lpfc_unregister_fcf_rescan(phba);
352                         return;
353                 }
354                 spin_unlock_irq(&phba->hbalock);
355                 if (phba->hba_flag & FCF_TS_INPROG)
356                         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
357                                         "2870 FCF table scan in progress\n");
358                 if (phba->hba_flag & FCF_RR_INPROG)
359                         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
360                                         "2871 FLOGI roundrobin FCF failover "
361                                         "in progress\n");
362         }
363         lpfc_unregister_unused_fcf(phba);
364 }
365
366 /**
367  * lpfc_alloc_fast_evt - Allocates data structure for posting event
368  * @phba: Pointer to hba context object.
369  *
370  * This function is called from the functions which need to post
371  * events from interrupt context. This function allocates data
372  * structure required for posting event. It also keeps track of
373  * number of events pending and prevent event storm when there are
374  * too many events.
375  **/
376 struct lpfc_fast_path_event *
377 lpfc_alloc_fast_evt(struct lpfc_hba *phba) {
378         struct lpfc_fast_path_event *ret;
379
380         /* If there are lot of fast event do not exhaust memory due to this */
381         if (atomic_read(&phba->fast_event_count) > LPFC_MAX_EVT_COUNT)
382                 return NULL;
383
384         ret = kzalloc(sizeof(struct lpfc_fast_path_event),
385                         GFP_ATOMIC);
386         if (ret) {
387                 atomic_inc(&phba->fast_event_count);
388                 INIT_LIST_HEAD(&ret->work_evt.evt_listp);
389                 ret->work_evt.evt = LPFC_EVT_FASTPATH_MGMT_EVT;
390         }
391         return ret;
392 }
393
394 /**
395  * lpfc_free_fast_evt - Frees event data structure
396  * @phba: Pointer to hba context object.
397  * @evt:  Event object which need to be freed.
398  *
399  * This function frees the data structure required for posting
400  * events.
401  **/
402 void
403 lpfc_free_fast_evt(struct lpfc_hba *phba,
404                 struct lpfc_fast_path_event *evt) {
405
406         atomic_dec(&phba->fast_event_count);
407         kfree(evt);
408 }
409
410 /**
411  * lpfc_send_fastpath_evt - Posts events generated from fast path
412  * @phba: Pointer to hba context object.
413  * @evtp: Event data structure.
414  *
415  * This function is called from worker thread, when the interrupt
416  * context need to post an event. This function posts the event
417  * to fc transport netlink interface.
418  **/
419 static void
420 lpfc_send_fastpath_evt(struct lpfc_hba *phba,
421                 struct lpfc_work_evt *evtp)
422 {
423         unsigned long evt_category, evt_sub_category;
424         struct lpfc_fast_path_event *fast_evt_data;
425         char *evt_data;
426         uint32_t evt_data_size;
427         struct Scsi_Host *shost;
428
429         fast_evt_data = container_of(evtp, struct lpfc_fast_path_event,
430                 work_evt);
431
432         evt_category = (unsigned long) fast_evt_data->un.fabric_evt.event_type;
433         evt_sub_category = (unsigned long) fast_evt_data->un.
434                         fabric_evt.subcategory;
435         shost = lpfc_shost_from_vport(fast_evt_data->vport);
436         if (evt_category == FC_REG_FABRIC_EVENT) {
437                 if (evt_sub_category == LPFC_EVENT_FCPRDCHKERR) {
438                         evt_data = (char *) &fast_evt_data->un.read_check_error;
439                         evt_data_size = sizeof(fast_evt_data->un.
440                                 read_check_error);
441                 } else if ((evt_sub_category == LPFC_EVENT_FABRIC_BUSY) ||
442                         (evt_sub_category == LPFC_EVENT_PORT_BUSY)) {
443                         evt_data = (char *) &fast_evt_data->un.fabric_evt;
444                         evt_data_size = sizeof(fast_evt_data->un.fabric_evt);
445                 } else {
446                         lpfc_free_fast_evt(phba, fast_evt_data);
447                         return;
448                 }
449         } else if (evt_category == FC_REG_SCSI_EVENT) {
450                 switch (evt_sub_category) {
451                 case LPFC_EVENT_QFULL:
452                 case LPFC_EVENT_DEVBSY:
453                         evt_data = (char *) &fast_evt_data->un.scsi_evt;
454                         evt_data_size = sizeof(fast_evt_data->un.scsi_evt);
455                         break;
456                 case LPFC_EVENT_CHECK_COND:
457                         evt_data = (char *) &fast_evt_data->un.check_cond_evt;
458                         evt_data_size =  sizeof(fast_evt_data->un.
459                                 check_cond_evt);
460                         break;
461                 case LPFC_EVENT_VARQUEDEPTH:
462                         evt_data = (char *) &fast_evt_data->un.queue_depth_evt;
463                         evt_data_size = sizeof(fast_evt_data->un.
464                                 queue_depth_evt);
465                         break;
466                 default:
467                         lpfc_free_fast_evt(phba, fast_evt_data);
468                         return;
469                 }
470         } else {
471                 lpfc_free_fast_evt(phba, fast_evt_data);
472                 return;
473         }
474
475         fc_host_post_vendor_event(shost,
476                 fc_get_event_number(),
477                 evt_data_size,
478                 evt_data,
479                 LPFC_NL_VENDOR_ID);
480
481         lpfc_free_fast_evt(phba, fast_evt_data);
482         return;
483 }
484
485 static void
486 lpfc_work_list_done(struct lpfc_hba *phba)
487 {
488         struct lpfc_work_evt  *evtp = NULL;
489         struct lpfc_nodelist  *ndlp;
490         int free_evt;
491         int fcf_inuse;
492         uint32_t nlp_did;
493
494         spin_lock_irq(&phba->hbalock);
495         while (!list_empty(&phba->work_list)) {
496                 list_remove_head((&phba->work_list), evtp, typeof(*evtp),
497                                  evt_listp);
498                 spin_unlock_irq(&phba->hbalock);
499                 free_evt = 1;
500                 switch (evtp->evt) {
501                 case LPFC_EVT_ELS_RETRY:
502                         ndlp = (struct lpfc_nodelist *) (evtp->evt_arg1);
503                         lpfc_els_retry_delay_handler(ndlp);
504                         free_evt = 0; /* evt is part of ndlp */
505                         /* decrement the node reference count held
506                          * for this queued work
507                          */
508                         lpfc_nlp_put(ndlp);
509                         break;
510                 case LPFC_EVT_DEV_LOSS:
511                         ndlp = (struct lpfc_nodelist *)(evtp->evt_arg1);
512                         fcf_inuse = lpfc_dev_loss_tmo_handler(ndlp);
513                         free_evt = 0;
514                         /* decrement the node reference count held for
515                          * this queued work
516                          */
517                         nlp_did = ndlp->nlp_DID;
518                         lpfc_nlp_put(ndlp);
519                         if (phba->sli_rev == LPFC_SLI_REV4)
520                                 lpfc_sli4_post_dev_loss_tmo_handler(phba,
521                                                                     fcf_inuse,
522                                                                     nlp_did);
523                         break;
524                 case LPFC_EVT_ONLINE:
525                         if (phba->link_state < LPFC_LINK_DOWN)
526                                 *(int *) (evtp->evt_arg1) = lpfc_online(phba);
527                         else
528                                 *(int *) (evtp->evt_arg1) = 0;
529                         complete((struct completion *)(evtp->evt_arg2));
530                         break;
531                 case LPFC_EVT_OFFLINE_PREP:
532                         if (phba->link_state >= LPFC_LINK_DOWN)
533                                 lpfc_offline_prep(phba);
534                         *(int *)(evtp->evt_arg1) = 0;
535                         complete((struct completion *)(evtp->evt_arg2));
536                         break;
537                 case LPFC_EVT_OFFLINE:
538                         lpfc_offline(phba);
539                         lpfc_sli_brdrestart(phba);
540                         *(int *)(evtp->evt_arg1) =
541                                 lpfc_sli_brdready(phba, HS_FFRDY | HS_MBRDY);
542                         lpfc_unblock_mgmt_io(phba);
543                         complete((struct completion *)(evtp->evt_arg2));
544                         break;
545                 case LPFC_EVT_WARM_START:
546                         lpfc_offline(phba);
547                         lpfc_reset_barrier(phba);
548                         lpfc_sli_brdreset(phba);
549                         lpfc_hba_down_post(phba);
550                         *(int *)(evtp->evt_arg1) =
551                                 lpfc_sli_brdready(phba, HS_MBRDY);
552                         lpfc_unblock_mgmt_io(phba);
553                         complete((struct completion *)(evtp->evt_arg2));
554                         break;
555                 case LPFC_EVT_KILL:
556                         lpfc_offline(phba);
557                         *(int *)(evtp->evt_arg1)
558                                 = (phba->pport->stopped)
559                                         ? 0 : lpfc_sli_brdkill(phba);
560                         lpfc_unblock_mgmt_io(phba);
561                         complete((struct completion *)(evtp->evt_arg2));
562                         break;
563                 case LPFC_EVT_FASTPATH_MGMT_EVT:
564                         lpfc_send_fastpath_evt(phba, evtp);
565                         free_evt = 0;
566                         break;
567                 case LPFC_EVT_RESET_HBA:
568                         if (!(phba->pport->load_flag & FC_UNLOADING))
569                                 lpfc_reset_hba(phba);
570                         break;
571                 }
572                 if (free_evt)
573                         kfree(evtp);
574                 spin_lock_irq(&phba->hbalock);
575         }
576         spin_unlock_irq(&phba->hbalock);
577
578 }
579
580 static void
581 lpfc_work_done(struct lpfc_hba *phba)
582 {
583         struct lpfc_sli_ring *pring;
584         uint32_t ha_copy, status, control, work_port_events;
585         struct lpfc_vport **vports;
586         struct lpfc_vport *vport;
587         int i;
588
589         spin_lock_irq(&phba->hbalock);
590         ha_copy = phba->work_ha;
591         phba->work_ha = 0;
592         spin_unlock_irq(&phba->hbalock);
593
594         /* First, try to post the next mailbox command to SLI4 device */
595         if (phba->pci_dev_grp == LPFC_PCI_DEV_OC)
596                 lpfc_sli4_post_async_mbox(phba);
597
598         if (ha_copy & HA_ERATT)
599                 /* Handle the error attention event */
600                 lpfc_handle_eratt(phba);
601
602         if (ha_copy & HA_MBATT)
603                 lpfc_sli_handle_mb_event(phba);
604
605         if (ha_copy & HA_LATT)
606                 lpfc_handle_latt(phba);
607
608         /* Process SLI4 events */
609         if (phba->pci_dev_grp == LPFC_PCI_DEV_OC) {
610                 if (phba->hba_flag & HBA_RRQ_ACTIVE)
611                         lpfc_handle_rrq_active(phba);
612                 if (phba->hba_flag & FCP_XRI_ABORT_EVENT)
613                         lpfc_sli4_fcp_xri_abort_event_proc(phba);
614                 if (phba->hba_flag & ELS_XRI_ABORT_EVENT)
615                         lpfc_sli4_els_xri_abort_event_proc(phba);
616                 if (phba->hba_flag & ASYNC_EVENT)
617                         lpfc_sli4_async_event_proc(phba);
618                 if (phba->hba_flag & HBA_POST_RECEIVE_BUFFER) {
619                         spin_lock_irq(&phba->hbalock);
620                         phba->hba_flag &= ~HBA_POST_RECEIVE_BUFFER;
621                         spin_unlock_irq(&phba->hbalock);
622                         lpfc_sli_hbqbuf_add_hbqs(phba, LPFC_ELS_HBQ);
623                 }
624                 if (phba->fcf.fcf_flag & FCF_REDISC_EVT)
625                         lpfc_sli4_fcf_redisc_event_proc(phba);
626         }
627
628         vports = lpfc_create_vport_work_array(phba);
629         if (vports != NULL)
630                 for (i = 0; i <= phba->max_vports; i++) {
631                         /*
632                          * We could have no vports in array if unloading, so if
633                          * this happens then just use the pport
634                          */
635                         if (vports[i] == NULL && i == 0)
636                                 vport = phba->pport;
637                         else
638                                 vport = vports[i];
639                         if (vport == NULL)
640                                 break;
641                         spin_lock_irq(&vport->work_port_lock);
642                         work_port_events = vport->work_port_events;
643                         vport->work_port_events &= ~work_port_events;
644                         spin_unlock_irq(&vport->work_port_lock);
645                         if (work_port_events & WORKER_DISC_TMO)
646                                 lpfc_disc_timeout_handler(vport);
647                         if (work_port_events & WORKER_ELS_TMO)
648                                 lpfc_els_timeout_handler(vport);
649                         if (work_port_events & WORKER_HB_TMO)
650                                 lpfc_hb_timeout_handler(phba);
651                         if (work_port_events & WORKER_MBOX_TMO)
652                                 lpfc_mbox_timeout_handler(phba);
653                         if (work_port_events & WORKER_FABRIC_BLOCK_TMO)
654                                 lpfc_unblock_fabric_iocbs(phba);
655                         if (work_port_events & WORKER_FDMI_TMO)
656                                 lpfc_fdmi_timeout_handler(vport);
657                         if (work_port_events & WORKER_RAMP_DOWN_QUEUE)
658                                 lpfc_ramp_down_queue_handler(phba);
659                         if (work_port_events & WORKER_RAMP_UP_QUEUE)
660                                 lpfc_ramp_up_queue_handler(phba);
661                 }
662         lpfc_destroy_vport_work_array(phba, vports);
663
664         pring = &phba->sli.ring[LPFC_ELS_RING];
665         status = (ha_copy & (HA_RXMASK  << (4*LPFC_ELS_RING)));
666         status >>= (4*LPFC_ELS_RING);
667         if ((status & HA_RXMASK) ||
668             (pring->flag & LPFC_DEFERRED_RING_EVENT) ||
669             (phba->hba_flag & HBA_SP_QUEUE_EVT)) {
670                 if (pring->flag & LPFC_STOP_IOCB_EVENT) {
671                         pring->flag |= LPFC_DEFERRED_RING_EVENT;
672                         /* Set the lpfc data pending flag */
673                         set_bit(LPFC_DATA_READY, &phba->data_flags);
674                 } else {
675                         pring->flag &= ~LPFC_DEFERRED_RING_EVENT;
676                         lpfc_sli_handle_slow_ring_event(phba, pring,
677                                                         (status &
678                                                          HA_RXMASK));
679                 }
680                 if ((phba->sli_rev == LPFC_SLI_REV4) && pring->txq_cnt)
681                         lpfc_drain_txq(phba);
682                 /*
683                  * Turn on Ring interrupts
684                  */
685                 if (phba->sli_rev <= LPFC_SLI_REV3) {
686                         spin_lock_irq(&phba->hbalock);
687                         control = readl(phba->HCregaddr);
688                         if (!(control & (HC_R0INT_ENA << LPFC_ELS_RING))) {
689                                 lpfc_debugfs_slow_ring_trc(phba,
690                                         "WRK Enable ring: cntl:x%x hacopy:x%x",
691                                         control, ha_copy, 0);
692
693                                 control |= (HC_R0INT_ENA << LPFC_ELS_RING);
694                                 writel(control, phba->HCregaddr);
695                                 readl(phba->HCregaddr); /* flush */
696                         } else {
697                                 lpfc_debugfs_slow_ring_trc(phba,
698                                         "WRK Ring ok:     cntl:x%x hacopy:x%x",
699                                         control, ha_copy, 0);
700                         }
701                         spin_unlock_irq(&phba->hbalock);
702                 }
703         }
704         lpfc_work_list_done(phba);
705 }
706
707 int
708 lpfc_do_work(void *p)
709 {
710         struct lpfc_hba *phba = p;
711         int rc;
712
713         set_user_nice(current, -20);
714         phba->data_flags = 0;
715
716         while (!kthread_should_stop()) {
717                 /* wait and check worker queue activities */
718                 rc = wait_event_interruptible(phba->work_waitq,
719                                         (test_and_clear_bit(LPFC_DATA_READY,
720                                                             &phba->data_flags)
721                                          || kthread_should_stop()));
722                 /* Signal wakeup shall terminate the worker thread */
723                 if (rc) {
724                         lpfc_printf_log(phba, KERN_ERR, LOG_ELS,
725                                         "0433 Wakeup on signal: rc=x%x\n", rc);
726                         break;
727                 }
728
729                 /* Attend pending lpfc data processing */
730                 lpfc_work_done(phba);
731         }
732         phba->worker_thread = NULL;
733         lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
734                         "0432 Worker thread stopped.\n");
735         return 0;
736 }
737
738 /*
739  * This is only called to handle FC worker events. Since this a rare
740  * occurance, we allocate a struct lpfc_work_evt structure here instead of
741  * embedding it in the IOCB.
742  */
743 int
744 lpfc_workq_post_event(struct lpfc_hba *phba, void *arg1, void *arg2,
745                       uint32_t evt)
746 {
747         struct lpfc_work_evt  *evtp;
748         unsigned long flags;
749
750         /*
751          * All Mailbox completions and LPFC_ELS_RING rcv ring IOCB events will
752          * be queued to worker thread for processing
753          */
754         evtp = kmalloc(sizeof(struct lpfc_work_evt), GFP_ATOMIC);
755         if (!evtp)
756                 return 0;
757
758         evtp->evt_arg1  = arg1;
759         evtp->evt_arg2  = arg2;
760         evtp->evt       = evt;
761
762         spin_lock_irqsave(&phba->hbalock, flags);
763         list_add_tail(&evtp->evt_listp, &phba->work_list);
764         spin_unlock_irqrestore(&phba->hbalock, flags);
765
766         lpfc_worker_wake_up(phba);
767
768         return 1;
769 }
770
771 void
772 lpfc_cleanup_rpis(struct lpfc_vport *vport, int remove)
773 {
774         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
775         struct lpfc_hba  *phba = vport->phba;
776         struct lpfc_nodelist *ndlp, *next_ndlp;
777         int  rc;
778
779         list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) {
780                 if (!NLP_CHK_NODE_ACT(ndlp))
781                         continue;
782                 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
783                         continue;
784                 if ((phba->sli3_options & LPFC_SLI3_VPORT_TEARDOWN) ||
785                         ((vport->port_type == LPFC_NPIV_PORT) &&
786                         (ndlp->nlp_DID == NameServer_DID)))
787                         lpfc_unreg_rpi(vport, ndlp);
788
789                 /* Leave Fabric nodes alone on link down */
790                 if ((phba->sli_rev < LPFC_SLI_REV4) &&
791                     (!remove && ndlp->nlp_type & NLP_FABRIC))
792                         continue;
793                 rc = lpfc_disc_state_machine(vport, ndlp, NULL,
794                                              remove
795                                              ? NLP_EVT_DEVICE_RM
796                                              : NLP_EVT_DEVICE_RECOVERY);
797         }
798         if (phba->sli3_options & LPFC_SLI3_VPORT_TEARDOWN) {
799                 if (phba->sli_rev == LPFC_SLI_REV4)
800                         lpfc_sli4_unreg_all_rpis(vport);
801                 lpfc_mbx_unreg_vpi(vport);
802                 spin_lock_irq(shost->host_lock);
803                 vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
804                 spin_unlock_irq(shost->host_lock);
805         }
806 }
807
808 void
809 lpfc_port_link_failure(struct lpfc_vport *vport)
810 {
811         lpfc_vport_set_state(vport, FC_VPORT_LINKDOWN);
812
813         /* Cleanup any outstanding received buffers */
814         lpfc_cleanup_rcv_buffers(vport);
815
816         /* Cleanup any outstanding RSCN activity */
817         lpfc_els_flush_rscn(vport);
818
819         /* Cleanup any outstanding ELS commands */
820         lpfc_els_flush_cmd(vport);
821
822         lpfc_cleanup_rpis(vport, 0);
823
824         /* Turn off discovery timer if its running */
825         lpfc_can_disctmo(vport);
826 }
827
828 void
829 lpfc_linkdown_port(struct lpfc_vport *vport)
830 {
831         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
832
833         fc_host_post_event(shost, fc_get_event_number(), FCH_EVT_LINKDOWN, 0);
834
835         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
836                 "Link Down:       state:x%x rtry:x%x flg:x%x",
837                 vport->port_state, vport->fc_ns_retry, vport->fc_flag);
838
839         lpfc_port_link_failure(vport);
840
841 }
842
843 int
844 lpfc_linkdown(struct lpfc_hba *phba)
845 {
846         struct lpfc_vport *vport = phba->pport;
847         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
848         struct lpfc_vport **vports;
849         LPFC_MBOXQ_t          *mb;
850         int i;
851
852         if (phba->link_state == LPFC_LINK_DOWN)
853                 return 0;
854
855         /* Block all SCSI stack I/Os */
856         lpfc_scsi_dev_block(phba);
857
858         spin_lock_irq(&phba->hbalock);
859         phba->fcf.fcf_flag &= ~(FCF_AVAILABLE | FCF_SCAN_DONE);
860         spin_unlock_irq(&phba->hbalock);
861         if (phba->link_state > LPFC_LINK_DOWN) {
862                 phba->link_state = LPFC_LINK_DOWN;
863                 spin_lock_irq(shost->host_lock);
864                 phba->pport->fc_flag &= ~FC_LBIT;
865                 spin_unlock_irq(shost->host_lock);
866         }
867         vports = lpfc_create_vport_work_array(phba);
868         if (vports != NULL)
869                 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
870                         /* Issue a LINK DOWN event to all nodes */
871                         lpfc_linkdown_port(vports[i]);
872                 }
873         lpfc_destroy_vport_work_array(phba, vports);
874         /* Clean up any firmware default rpi's */
875         mb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
876         if (mb) {
877                 lpfc_unreg_did(phba, 0xffff, 0xffffffff, mb);
878                 mb->vport = vport;
879                 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
880                 if (lpfc_sli_issue_mbox(phba, mb, MBX_NOWAIT)
881                     == MBX_NOT_FINISHED) {
882                         mempool_free(mb, phba->mbox_mem_pool);
883                 }
884         }
885
886         /* Setup myDID for link up if we are in pt2pt mode */
887         if (phba->pport->fc_flag & FC_PT2PT) {
888                 phba->pport->fc_myDID = 0;
889                 mb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
890                 if (mb) {
891                         lpfc_config_link(phba, mb);
892                         mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
893                         mb->vport = vport;
894                         if (lpfc_sli_issue_mbox(phba, mb, MBX_NOWAIT)
895                             == MBX_NOT_FINISHED) {
896                                 mempool_free(mb, phba->mbox_mem_pool);
897                         }
898                 }
899                 spin_lock_irq(shost->host_lock);
900                 phba->pport->fc_flag &= ~(FC_PT2PT | FC_PT2PT_PLOGI);
901                 spin_unlock_irq(shost->host_lock);
902         }
903
904         return 0;
905 }
906
907 static void
908 lpfc_linkup_cleanup_nodes(struct lpfc_vport *vport)
909 {
910         struct lpfc_nodelist *ndlp;
911
912         list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
913                 if (!NLP_CHK_NODE_ACT(ndlp))
914                         continue;
915                 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
916                         continue;
917                 if (ndlp->nlp_type & NLP_FABRIC) {
918                         /* On Linkup its safe to clean up the ndlp
919                          * from Fabric connections.
920                          */
921                         if (ndlp->nlp_DID != Fabric_DID)
922                                 lpfc_unreg_rpi(vport, ndlp);
923                         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
924                 } else if (!(ndlp->nlp_flag & NLP_NPR_ADISC)) {
925                         /* Fail outstanding IO now since device is
926                          * marked for PLOGI.
927                          */
928                         lpfc_unreg_rpi(vport, ndlp);
929                 }
930         }
931 }
932
933 static void
934 lpfc_linkup_port(struct lpfc_vport *vport)
935 {
936         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
937         struct lpfc_hba  *phba = vport->phba;
938
939         if ((vport->load_flag & FC_UNLOADING) != 0)
940                 return;
941
942         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
943                 "Link Up:         top:x%x speed:x%x flg:x%x",
944                 phba->fc_topology, phba->fc_linkspeed, phba->link_flag);
945
946         /* If NPIV is not enabled, only bring the physical port up */
947         if (!(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
948                 (vport != phba->pport))
949                 return;
950
951         fc_host_post_event(shost, fc_get_event_number(), FCH_EVT_LINKUP, 0);
952
953         spin_lock_irq(shost->host_lock);
954         vport->fc_flag &= ~(FC_PT2PT | FC_PT2PT_PLOGI | FC_ABORT_DISCOVERY |
955                             FC_RSCN_MODE | FC_NLP_MORE | FC_RSCN_DISCOVERY);
956         vport->fc_flag |= FC_NDISC_ACTIVE;
957         vport->fc_ns_retry = 0;
958         spin_unlock_irq(shost->host_lock);
959
960         if (vport->fc_flag & FC_LBIT)
961                 lpfc_linkup_cleanup_nodes(vport);
962
963 }
964
965 static int
966 lpfc_linkup(struct lpfc_hba *phba)
967 {
968         struct lpfc_vport **vports;
969         int i;
970
971         lpfc_cleanup_wt_rrqs(phba);
972         phba->link_state = LPFC_LINK_UP;
973
974         /* Unblock fabric iocbs if they are blocked */
975         clear_bit(FABRIC_COMANDS_BLOCKED, &phba->bit_flags);
976         del_timer_sync(&phba->fabric_block_timer);
977
978         vports = lpfc_create_vport_work_array(phba);
979         if (vports != NULL)
980                 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++)
981                         lpfc_linkup_port(vports[i]);
982         lpfc_destroy_vport_work_array(phba, vports);
983         if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
984             (phba->sli_rev < LPFC_SLI_REV4))
985                 lpfc_issue_clear_la(phba, phba->pport);
986
987         return 0;
988 }
989
990 /*
991  * This routine handles processing a CLEAR_LA mailbox
992  * command upon completion. It is setup in the LPFC_MBOXQ
993  * as the completion routine when the command is
994  * handed off to the SLI layer.
995  */
996 static void
997 lpfc_mbx_cmpl_clear_la(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
998 {
999         struct lpfc_vport *vport = pmb->vport;
1000         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
1001         struct lpfc_sli   *psli = &phba->sli;
1002         MAILBOX_t *mb = &pmb->u.mb;
1003         uint32_t control;
1004
1005         /* Since we don't do discovery right now, turn these off here */
1006         psli->ring[psli->extra_ring].flag &= ~LPFC_STOP_IOCB_EVENT;
1007         psli->ring[psli->fcp_ring].flag &= ~LPFC_STOP_IOCB_EVENT;
1008         psli->ring[psli->next_ring].flag &= ~LPFC_STOP_IOCB_EVENT;
1009
1010         /* Check for error */
1011         if ((mb->mbxStatus) && (mb->mbxStatus != 0x1601)) {
1012                 /* CLEAR_LA mbox error <mbxStatus> state <hba_state> */
1013                 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
1014                                  "0320 CLEAR_LA mbxStatus error x%x hba "
1015                                  "state x%x\n",
1016                                  mb->mbxStatus, vport->port_state);
1017                 phba->link_state = LPFC_HBA_ERROR;
1018                 goto out;
1019         }
1020
1021         if (vport->port_type == LPFC_PHYSICAL_PORT)
1022                 phba->link_state = LPFC_HBA_READY;
1023
1024         spin_lock_irq(&phba->hbalock);
1025         psli->sli_flag |= LPFC_PROCESS_LA;
1026         control = readl(phba->HCregaddr);
1027         control |= HC_LAINT_ENA;
1028         writel(control, phba->HCregaddr);
1029         readl(phba->HCregaddr); /* flush */
1030         spin_unlock_irq(&phba->hbalock);
1031         mempool_free(pmb, phba->mbox_mem_pool);
1032         return;
1033
1034 out:
1035         /* Device Discovery completes */
1036         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
1037                          "0225 Device Discovery completes\n");
1038         mempool_free(pmb, phba->mbox_mem_pool);
1039
1040         spin_lock_irq(shost->host_lock);
1041         vport->fc_flag &= ~FC_ABORT_DISCOVERY;
1042         spin_unlock_irq(shost->host_lock);
1043
1044         lpfc_can_disctmo(vport);
1045
1046         /* turn on Link Attention interrupts */
1047
1048         spin_lock_irq(&phba->hbalock);
1049         psli->sli_flag |= LPFC_PROCESS_LA;
1050         control = readl(phba->HCregaddr);
1051         control |= HC_LAINT_ENA;
1052         writel(control, phba->HCregaddr);
1053         readl(phba->HCregaddr); /* flush */
1054         spin_unlock_irq(&phba->hbalock);
1055
1056         return;
1057 }
1058
1059
1060 static void
1061 lpfc_mbx_cmpl_local_config_link(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
1062 {
1063         struct lpfc_vport *vport = pmb->vport;
1064
1065         if (pmb->u.mb.mbxStatus)
1066                 goto out;
1067
1068         mempool_free(pmb, phba->mbox_mem_pool);
1069
1070         if (phba->fc_topology == LPFC_TOPOLOGY_LOOP &&
1071             vport->fc_flag & FC_PUBLIC_LOOP &&
1072             !(vport->fc_flag & FC_LBIT)) {
1073                         /* Need to wait for FAN - use discovery timer
1074                          * for timeout.  port_state is identically
1075                          * LPFC_LOCAL_CFG_LINK while waiting for FAN
1076                          */
1077                         lpfc_set_disctmo(vport);
1078                         return;
1079         }
1080
1081         /* Start discovery by sending a FLOGI. port_state is identically
1082          * LPFC_FLOGI while waiting for FLOGI cmpl
1083          */
1084         if (vport->port_state != LPFC_FLOGI)
1085                 lpfc_initial_flogi(vport);
1086         return;
1087
1088 out:
1089         lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
1090                          "0306 CONFIG_LINK mbxStatus error x%x "
1091                          "HBA state x%x\n",
1092                          pmb->u.mb.mbxStatus, vport->port_state);
1093         mempool_free(pmb, phba->mbox_mem_pool);
1094
1095         lpfc_linkdown(phba);
1096
1097         lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
1098                          "0200 CONFIG_LINK bad hba state x%x\n",
1099                          vport->port_state);
1100
1101         lpfc_issue_clear_la(phba, vport);
1102         return;
1103 }
1104
1105 static void
1106 lpfc_mbx_cmpl_reg_fcfi(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
1107 {
1108         struct lpfc_vport *vport = mboxq->vport;
1109
1110         if (mboxq->u.mb.mbxStatus) {
1111                 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
1112                          "2017 REG_FCFI mbxStatus error x%x "
1113                          "HBA state x%x\n",
1114                          mboxq->u.mb.mbxStatus, vport->port_state);
1115                 goto fail_out;
1116         }
1117
1118         /* Start FCoE discovery by sending a FLOGI. */
1119         phba->fcf.fcfi = bf_get(lpfc_reg_fcfi_fcfi, &mboxq->u.mqe.un.reg_fcfi);
1120         /* Set the FCFI registered flag */
1121         spin_lock_irq(&phba->hbalock);
1122         phba->fcf.fcf_flag |= FCF_REGISTERED;
1123         spin_unlock_irq(&phba->hbalock);
1124
1125         /* If there is a pending FCoE event, restart FCF table scan. */
1126         if (lpfc_check_pending_fcoe_event(phba, LPFC_UNREG_FCF))
1127                 goto fail_out;
1128
1129         /* Mark successful completion of FCF table scan */
1130         spin_lock_irq(&phba->hbalock);
1131         phba->fcf.fcf_flag |= (FCF_SCAN_DONE | FCF_IN_USE);
1132         phba->hba_flag &= ~FCF_TS_INPROG;
1133         if (vport->port_state != LPFC_FLOGI) {
1134                 phba->hba_flag |= FCF_RR_INPROG;
1135                 spin_unlock_irq(&phba->hbalock);
1136                 lpfc_issue_init_vfi(vport);
1137                 goto out;
1138         }
1139         spin_unlock_irq(&phba->hbalock);
1140         goto out;
1141
1142 fail_out:
1143         spin_lock_irq(&phba->hbalock);
1144         phba->hba_flag &= ~FCF_RR_INPROG;
1145         spin_unlock_irq(&phba->hbalock);
1146 out:
1147         mempool_free(mboxq, phba->mbox_mem_pool);
1148 }
1149
1150 /**
1151  * lpfc_fab_name_match - Check if the fcf fabric name match.
1152  * @fab_name: pointer to fabric name.
1153  * @new_fcf_record: pointer to fcf record.
1154  *
1155  * This routine compare the fcf record's fabric name with provided
1156  * fabric name. If the fabric name are identical this function
1157  * returns 1 else return 0.
1158  **/
1159 static uint32_t
1160 lpfc_fab_name_match(uint8_t *fab_name, struct fcf_record *new_fcf_record)
1161 {
1162         if (fab_name[0] != bf_get(lpfc_fcf_record_fab_name_0, new_fcf_record))
1163                 return 0;
1164         if (fab_name[1] != bf_get(lpfc_fcf_record_fab_name_1, new_fcf_record))
1165                 return 0;
1166         if (fab_name[2] != bf_get(lpfc_fcf_record_fab_name_2, new_fcf_record))
1167                 return 0;
1168         if (fab_name[3] != bf_get(lpfc_fcf_record_fab_name_3, new_fcf_record))
1169                 return 0;
1170         if (fab_name[4] != bf_get(lpfc_fcf_record_fab_name_4, new_fcf_record))
1171                 return 0;
1172         if (fab_name[5] != bf_get(lpfc_fcf_record_fab_name_5, new_fcf_record))
1173                 return 0;
1174         if (fab_name[6] != bf_get(lpfc_fcf_record_fab_name_6, new_fcf_record))
1175                 return 0;
1176         if (fab_name[7] != bf_get(lpfc_fcf_record_fab_name_7, new_fcf_record))
1177                 return 0;
1178         return 1;
1179 }
1180
1181 /**
1182  * lpfc_sw_name_match - Check if the fcf switch name match.
1183  * @fab_name: pointer to fabric name.
1184  * @new_fcf_record: pointer to fcf record.
1185  *
1186  * This routine compare the fcf record's switch name with provided
1187  * switch name. If the switch name are identical this function
1188  * returns 1 else return 0.
1189  **/
1190 static uint32_t
1191 lpfc_sw_name_match(uint8_t *sw_name, struct fcf_record *new_fcf_record)
1192 {
1193         if (sw_name[0] != bf_get(lpfc_fcf_record_switch_name_0, new_fcf_record))
1194                 return 0;
1195         if (sw_name[1] != bf_get(lpfc_fcf_record_switch_name_1, new_fcf_record))
1196                 return 0;
1197         if (sw_name[2] != bf_get(lpfc_fcf_record_switch_name_2, new_fcf_record))
1198                 return 0;
1199         if (sw_name[3] != bf_get(lpfc_fcf_record_switch_name_3, new_fcf_record))
1200                 return 0;
1201         if (sw_name[4] != bf_get(lpfc_fcf_record_switch_name_4, new_fcf_record))
1202                 return 0;
1203         if (sw_name[5] != bf_get(lpfc_fcf_record_switch_name_5, new_fcf_record))
1204                 return 0;
1205         if (sw_name[6] != bf_get(lpfc_fcf_record_switch_name_6, new_fcf_record))
1206                 return 0;
1207         if (sw_name[7] != bf_get(lpfc_fcf_record_switch_name_7, new_fcf_record))
1208                 return 0;
1209         return 1;
1210 }
1211
1212 /**
1213  * lpfc_mac_addr_match - Check if the fcf mac address match.
1214  * @mac_addr: pointer to mac address.
1215  * @new_fcf_record: pointer to fcf record.
1216  *
1217  * This routine compare the fcf record's mac address with HBA's
1218  * FCF mac address. If the mac addresses are identical this function
1219  * returns 1 else return 0.
1220  **/
1221 static uint32_t
1222 lpfc_mac_addr_match(uint8_t *mac_addr, struct fcf_record *new_fcf_record)
1223 {
1224         if (mac_addr[0] != bf_get(lpfc_fcf_record_mac_0, new_fcf_record))
1225                 return 0;
1226         if (mac_addr[1] != bf_get(lpfc_fcf_record_mac_1, new_fcf_record))
1227                 return 0;
1228         if (mac_addr[2] != bf_get(lpfc_fcf_record_mac_2, new_fcf_record))
1229                 return 0;
1230         if (mac_addr[3] != bf_get(lpfc_fcf_record_mac_3, new_fcf_record))
1231                 return 0;
1232         if (mac_addr[4] != bf_get(lpfc_fcf_record_mac_4, new_fcf_record))
1233                 return 0;
1234         if (mac_addr[5] != bf_get(lpfc_fcf_record_mac_5, new_fcf_record))
1235                 return 0;
1236         return 1;
1237 }
1238
1239 static bool
1240 lpfc_vlan_id_match(uint16_t curr_vlan_id, uint16_t new_vlan_id)
1241 {
1242         return (curr_vlan_id == new_vlan_id);
1243 }
1244
1245 /**
1246  * lpfc_copy_fcf_record - Copy fcf information to lpfc_hba.
1247  * @fcf: pointer to driver fcf record.
1248  * @new_fcf_record: pointer to fcf record.
1249  *
1250  * This routine copies the FCF information from the FCF
1251  * record to lpfc_hba data structure.
1252  **/
1253 static void
1254 lpfc_copy_fcf_record(struct lpfc_fcf_rec *fcf_rec,
1255                      struct fcf_record *new_fcf_record)
1256 {
1257         /* Fabric name */
1258         fcf_rec->fabric_name[0] =
1259                 bf_get(lpfc_fcf_record_fab_name_0, new_fcf_record);
1260         fcf_rec->fabric_name[1] =
1261                 bf_get(lpfc_fcf_record_fab_name_1, new_fcf_record);
1262         fcf_rec->fabric_name[2] =
1263                 bf_get(lpfc_fcf_record_fab_name_2, new_fcf_record);
1264         fcf_rec->fabric_name[3] =
1265                 bf_get(lpfc_fcf_record_fab_name_3, new_fcf_record);
1266         fcf_rec->fabric_name[4] =
1267                 bf_get(lpfc_fcf_record_fab_name_4, new_fcf_record);
1268         fcf_rec->fabric_name[5] =
1269                 bf_get(lpfc_fcf_record_fab_name_5, new_fcf_record);
1270         fcf_rec->fabric_name[6] =
1271                 bf_get(lpfc_fcf_record_fab_name_6, new_fcf_record);
1272         fcf_rec->fabric_name[7] =
1273                 bf_get(lpfc_fcf_record_fab_name_7, new_fcf_record);
1274         /* Mac address */
1275         fcf_rec->mac_addr[0] = bf_get(lpfc_fcf_record_mac_0, new_fcf_record);
1276         fcf_rec->mac_addr[1] = bf_get(lpfc_fcf_record_mac_1, new_fcf_record);
1277         fcf_rec->mac_addr[2] = bf_get(lpfc_fcf_record_mac_2, new_fcf_record);
1278         fcf_rec->mac_addr[3] = bf_get(lpfc_fcf_record_mac_3, new_fcf_record);
1279         fcf_rec->mac_addr[4] = bf_get(lpfc_fcf_record_mac_4, new_fcf_record);
1280         fcf_rec->mac_addr[5] = bf_get(lpfc_fcf_record_mac_5, new_fcf_record);
1281         /* FCF record index */
1282         fcf_rec->fcf_indx = bf_get(lpfc_fcf_record_fcf_index, new_fcf_record);
1283         /* FCF record priority */
1284         fcf_rec->priority = new_fcf_record->fip_priority;
1285         /* Switch name */
1286         fcf_rec->switch_name[0] =
1287                 bf_get(lpfc_fcf_record_switch_name_0, new_fcf_record);
1288         fcf_rec->switch_name[1] =
1289                 bf_get(lpfc_fcf_record_switch_name_1, new_fcf_record);
1290         fcf_rec->switch_name[2] =
1291                 bf_get(lpfc_fcf_record_switch_name_2, new_fcf_record);
1292         fcf_rec->switch_name[3] =
1293                 bf_get(lpfc_fcf_record_switch_name_3, new_fcf_record);
1294         fcf_rec->switch_name[4] =
1295                 bf_get(lpfc_fcf_record_switch_name_4, new_fcf_record);
1296         fcf_rec->switch_name[5] =
1297                 bf_get(lpfc_fcf_record_switch_name_5, new_fcf_record);
1298         fcf_rec->switch_name[6] =
1299                 bf_get(lpfc_fcf_record_switch_name_6, new_fcf_record);
1300         fcf_rec->switch_name[7] =
1301                 bf_get(lpfc_fcf_record_switch_name_7, new_fcf_record);
1302 }
1303
1304 /**
1305  * lpfc_update_fcf_record - Update driver fcf record
1306  * @phba: pointer to lpfc hba data structure.
1307  * @fcf_rec: pointer to driver fcf record.
1308  * @new_fcf_record: pointer to hba fcf record.
1309  * @addr_mode: address mode to be set to the driver fcf record.
1310  * @vlan_id: vlan tag to be set to the driver fcf record.
1311  * @flag: flag bits to be set to the driver fcf record.
1312  *
1313  * This routine updates the driver FCF record from the new HBA FCF record
1314  * together with the address mode, vlan_id, and other informations. This
1315  * routine is called with the host lock held.
1316  **/
1317 static void
1318 __lpfc_update_fcf_record(struct lpfc_hba *phba, struct lpfc_fcf_rec *fcf_rec,
1319                        struct fcf_record *new_fcf_record, uint32_t addr_mode,
1320                        uint16_t vlan_id, uint32_t flag)
1321 {
1322         /* Copy the fields from the HBA's FCF record */
1323         lpfc_copy_fcf_record(fcf_rec, new_fcf_record);
1324         /* Update other fields of driver FCF record */
1325         fcf_rec->addr_mode = addr_mode;
1326         fcf_rec->vlan_id = vlan_id;
1327         fcf_rec->flag |= (flag | RECORD_VALID);
1328 }
1329
1330 /**
1331  * lpfc_register_fcf - Register the FCF with hba.
1332  * @phba: pointer to lpfc hba data structure.
1333  *
1334  * This routine issues a register fcfi mailbox command to register
1335  * the fcf with HBA.
1336  **/
1337 static void
1338 lpfc_register_fcf(struct lpfc_hba *phba)
1339 {
1340         LPFC_MBOXQ_t *fcf_mbxq;
1341         int rc;
1342
1343         spin_lock_irq(&phba->hbalock);
1344         /* If the FCF is not availabe do nothing. */
1345         if (!(phba->fcf.fcf_flag & FCF_AVAILABLE)) {
1346                 phba->hba_flag &= ~(FCF_TS_INPROG | FCF_RR_INPROG);
1347                 spin_unlock_irq(&phba->hbalock);
1348                 return;
1349         }
1350
1351         /* The FCF is already registered, start discovery */
1352         if (phba->fcf.fcf_flag & FCF_REGISTERED) {
1353                 phba->fcf.fcf_flag |= (FCF_SCAN_DONE | FCF_IN_USE);
1354                 phba->hba_flag &= ~FCF_TS_INPROG;
1355                 if (phba->pport->port_state != LPFC_FLOGI) {
1356                         phba->hba_flag |= FCF_RR_INPROG;
1357                         spin_unlock_irq(&phba->hbalock);
1358                         lpfc_issue_init_vfi(phba->pport);
1359                         return;
1360                 }
1361                 spin_unlock_irq(&phba->hbalock);
1362                 return;
1363         }
1364         spin_unlock_irq(&phba->hbalock);
1365
1366         fcf_mbxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1367         if (!fcf_mbxq) {
1368                 spin_lock_irq(&phba->hbalock);
1369                 phba->hba_flag &= ~(FCF_TS_INPROG | FCF_RR_INPROG);
1370                 spin_unlock_irq(&phba->hbalock);
1371                 return;
1372         }
1373
1374         lpfc_reg_fcfi(phba, fcf_mbxq);
1375         fcf_mbxq->vport = phba->pport;
1376         fcf_mbxq->mbox_cmpl = lpfc_mbx_cmpl_reg_fcfi;
1377         rc = lpfc_sli_issue_mbox(phba, fcf_mbxq, MBX_NOWAIT);
1378         if (rc == MBX_NOT_FINISHED) {
1379                 spin_lock_irq(&phba->hbalock);
1380                 phba->hba_flag &= ~(FCF_TS_INPROG | FCF_RR_INPROG);
1381                 spin_unlock_irq(&phba->hbalock);
1382                 mempool_free(fcf_mbxq, phba->mbox_mem_pool);
1383         }
1384
1385         return;
1386 }
1387
1388 /**
1389  * lpfc_match_fcf_conn_list - Check if the FCF record can be used for discovery.
1390  * @phba: pointer to lpfc hba data structure.
1391  * @new_fcf_record: pointer to fcf record.
1392  * @boot_flag: Indicates if this record used by boot bios.
1393  * @addr_mode: The address mode to be used by this FCF
1394  * @vlan_id: The vlan id to be used as vlan tagging by this FCF.
1395  *
1396  * This routine compare the fcf record with connect list obtained from the
1397  * config region to decide if this FCF can be used for SAN discovery. It returns
1398  * 1 if this record can be used for SAN discovery else return zero. If this FCF
1399  * record can be used for SAN discovery, the boot_flag will indicate if this FCF
1400  * is used by boot bios and addr_mode will indicate the addressing mode to be
1401  * used for this FCF when the function returns.
1402  * If the FCF record need to be used with a particular vlan id, the vlan is
1403  * set in the vlan_id on return of the function. If not VLAN tagging need to
1404  * be used with the FCF vlan_id will be set to LPFC_FCOE_NULL_VID;
1405  **/
1406 static int
1407 lpfc_match_fcf_conn_list(struct lpfc_hba *phba,
1408                         struct fcf_record *new_fcf_record,
1409                         uint32_t *boot_flag, uint32_t *addr_mode,
1410                         uint16_t *vlan_id)
1411 {
1412         struct lpfc_fcf_conn_entry *conn_entry;
1413         int i, j, fcf_vlan_id = 0;
1414
1415         /* Find the lowest VLAN id in the FCF record */
1416         for (i = 0; i < 512; i++) {
1417                 if (new_fcf_record->vlan_bitmap[i]) {
1418                         fcf_vlan_id = i * 8;
1419                         j = 0;
1420                         while (!((new_fcf_record->vlan_bitmap[i] >> j) & 1)) {
1421                                 j++;
1422                                 fcf_vlan_id++;
1423                         }
1424                         break;
1425                 }
1426         }
1427
1428         /* If FCF not available return 0 */
1429         if (!bf_get(lpfc_fcf_record_fcf_avail, new_fcf_record) ||
1430                 !bf_get(lpfc_fcf_record_fcf_valid, new_fcf_record))
1431                 return 0;
1432
1433         if (!(phba->hba_flag & HBA_FIP_SUPPORT)) {
1434                 *boot_flag = 0;
1435                 *addr_mode = bf_get(lpfc_fcf_record_mac_addr_prov,
1436                                 new_fcf_record);
1437                 if (phba->valid_vlan)
1438                         *vlan_id = phba->vlan_id;
1439                 else
1440                         *vlan_id = LPFC_FCOE_NULL_VID;
1441                 return 1;
1442         }
1443
1444         /*
1445          * If there are no FCF connection table entry, driver connect to all
1446          * FCFs.
1447          */
1448         if (list_empty(&phba->fcf_conn_rec_list)) {
1449                 *boot_flag = 0;
1450                 *addr_mode = bf_get(lpfc_fcf_record_mac_addr_prov,
1451                         new_fcf_record);
1452
1453                 /*
1454                  * When there are no FCF connect entries, use driver's default
1455                  * addressing mode - FPMA.
1456                  */
1457                 if (*addr_mode & LPFC_FCF_FPMA)
1458                         *addr_mode = LPFC_FCF_FPMA;
1459
1460                 /* If FCF record report a vlan id use that vlan id */
1461                 if (fcf_vlan_id)
1462                         *vlan_id = fcf_vlan_id;
1463                 else
1464                         *vlan_id = LPFC_FCOE_NULL_VID;
1465                 return 1;
1466         }
1467
1468         list_for_each_entry(conn_entry,
1469                             &phba->fcf_conn_rec_list, list) {
1470                 if (!(conn_entry->conn_rec.flags & FCFCNCT_VALID))
1471                         continue;
1472
1473                 if ((conn_entry->conn_rec.flags & FCFCNCT_FBNM_VALID) &&
1474                         !lpfc_fab_name_match(conn_entry->conn_rec.fabric_name,
1475                                              new_fcf_record))
1476                         continue;
1477                 if ((conn_entry->conn_rec.flags & FCFCNCT_SWNM_VALID) &&
1478                         !lpfc_sw_name_match(conn_entry->conn_rec.switch_name,
1479                                             new_fcf_record))
1480                         continue;
1481                 if (conn_entry->conn_rec.flags & FCFCNCT_VLAN_VALID) {
1482                         /*
1483                          * If the vlan bit map does not have the bit set for the
1484                          * vlan id to be used, then it is not a match.
1485                          */
1486                         if (!(new_fcf_record->vlan_bitmap
1487                                 [conn_entry->conn_rec.vlan_tag / 8] &
1488                                 (1 << (conn_entry->conn_rec.vlan_tag % 8))))
1489                                 continue;
1490                 }
1491
1492                 /*
1493                  * If connection record does not support any addressing mode,
1494                  * skip the FCF record.
1495                  */
1496                 if (!(bf_get(lpfc_fcf_record_mac_addr_prov, new_fcf_record)
1497                         & (LPFC_FCF_FPMA | LPFC_FCF_SPMA)))
1498                         continue;
1499
1500                 /*
1501                  * Check if the connection record specifies a required
1502                  * addressing mode.
1503                  */
1504                 if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) &&
1505                         !(conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED)) {
1506
1507                         /*
1508                          * If SPMA required but FCF not support this continue.
1509                          */
1510                         if ((conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) &&
1511                                 !(bf_get(lpfc_fcf_record_mac_addr_prov,
1512                                         new_fcf_record) & LPFC_FCF_SPMA))
1513                                 continue;
1514
1515                         /*
1516                          * If FPMA required but FCF not support this continue.
1517                          */
1518                         if (!(conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) &&
1519                                 !(bf_get(lpfc_fcf_record_mac_addr_prov,
1520                                 new_fcf_record) & LPFC_FCF_FPMA))
1521                                 continue;
1522                 }
1523
1524                 /*
1525                  * This fcf record matches filtering criteria.
1526                  */
1527                 if (conn_entry->conn_rec.flags & FCFCNCT_BOOT)
1528                         *boot_flag = 1;
1529                 else
1530                         *boot_flag = 0;
1531
1532                 /*
1533                  * If user did not specify any addressing mode, or if the
1534                  * prefered addressing mode specified by user is not supported
1535                  * by FCF, allow fabric to pick the addressing mode.
1536                  */
1537                 *addr_mode = bf_get(lpfc_fcf_record_mac_addr_prov,
1538                                 new_fcf_record);
1539                 /*
1540                  * If the user specified a required address mode, assign that
1541                  * address mode
1542                  */
1543                 if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) &&
1544                         (!(conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED)))
1545                         *addr_mode = (conn_entry->conn_rec.flags &
1546                                 FCFCNCT_AM_SPMA) ?
1547                                 LPFC_FCF_SPMA : LPFC_FCF_FPMA;
1548                 /*
1549                  * If the user specified a prefered address mode, use the
1550                  * addr mode only if FCF support the addr_mode.
1551                  */
1552                 else if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) &&
1553                         (conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED) &&
1554                         (conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) &&
1555                         (*addr_mode & LPFC_FCF_SPMA))
1556                                 *addr_mode = LPFC_FCF_SPMA;
1557                 else if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) &&
1558                         (conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED) &&
1559                         !(conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) &&
1560                         (*addr_mode & LPFC_FCF_FPMA))
1561                                 *addr_mode = LPFC_FCF_FPMA;
1562
1563                 /* If matching connect list has a vlan id, use it */
1564                 if (conn_entry->conn_rec.flags & FCFCNCT_VLAN_VALID)
1565                         *vlan_id = conn_entry->conn_rec.vlan_tag;
1566                 /*
1567                  * If no vlan id is specified in connect list, use the vlan id
1568                  * in the FCF record
1569                  */
1570                 else if (fcf_vlan_id)
1571                         *vlan_id = fcf_vlan_id;
1572                 else
1573                         *vlan_id = LPFC_FCOE_NULL_VID;
1574
1575                 return 1;
1576         }
1577
1578         return 0;
1579 }
1580
1581 /**
1582  * lpfc_check_pending_fcoe_event - Check if there is pending fcoe event.
1583  * @phba: pointer to lpfc hba data structure.
1584  * @unreg_fcf: Unregister FCF if FCF table need to be re-scaned.
1585  *
1586  * This function check if there is any fcoe event pending while driver
1587  * scan FCF entries. If there is any pending event, it will restart the
1588  * FCF saning and return 1 else return 0.
1589  */
1590 int
1591 lpfc_check_pending_fcoe_event(struct lpfc_hba *phba, uint8_t unreg_fcf)
1592 {
1593         /*
1594          * If the Link is up and no FCoE events while in the
1595          * FCF discovery, no need to restart FCF discovery.
1596          */
1597         if ((phba->link_state  >= LPFC_LINK_UP) &&
1598             (phba->fcoe_eventtag == phba->fcoe_eventtag_at_fcf_scan))
1599                 return 0;
1600
1601         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
1602                         "2768 Pending link or FCF event during current "
1603                         "handling of the previous event: link_state:x%x, "
1604                         "evt_tag_at_scan:x%x, evt_tag_current:x%x\n",
1605                         phba->link_state, phba->fcoe_eventtag_at_fcf_scan,
1606                         phba->fcoe_eventtag);
1607
1608         spin_lock_irq(&phba->hbalock);
1609         phba->fcf.fcf_flag &= ~FCF_AVAILABLE;
1610         spin_unlock_irq(&phba->hbalock);
1611
1612         if (phba->link_state >= LPFC_LINK_UP) {
1613                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY,
1614                                 "2780 Restart FCF table scan due to "
1615                                 "pending FCF event:evt_tag_at_scan:x%x, "
1616                                 "evt_tag_current:x%x\n",
1617                                 phba->fcoe_eventtag_at_fcf_scan,
1618                                 phba->fcoe_eventtag);
1619                 lpfc_sli4_fcf_scan_read_fcf_rec(phba, LPFC_FCOE_FCF_GET_FIRST);
1620         } else {
1621                 /*
1622                  * Do not continue FCF discovery and clear FCF_TS_INPROG
1623                  * flag
1624                  */
1625                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY,
1626                                 "2833 Stop FCF discovery process due to link "
1627                                 "state change (x%x)\n", phba->link_state);
1628                 spin_lock_irq(&phba->hbalock);
1629                 phba->hba_flag &= ~(FCF_TS_INPROG | FCF_RR_INPROG);
1630                 phba->fcf.fcf_flag &= ~(FCF_REDISC_FOV | FCF_DISCOVERY);
1631                 spin_unlock_irq(&phba->hbalock);
1632         }
1633
1634         /* Unregister the currently registered FCF if required */
1635         if (unreg_fcf) {
1636                 spin_lock_irq(&phba->hbalock);
1637                 phba->fcf.fcf_flag &= ~FCF_REGISTERED;
1638                 spin_unlock_irq(&phba->hbalock);
1639                 lpfc_sli4_unregister_fcf(phba);
1640         }
1641         return 1;
1642 }
1643
1644 /**
1645  * lpfc_sli4_new_fcf_random_select - Randomly select an eligible new fcf record
1646  * @phba: pointer to lpfc hba data structure.
1647  * @fcf_cnt: number of eligible fcf record seen so far.
1648  *
1649  * This function makes an running random selection decision on FCF record to
1650  * use through a sequence of @fcf_cnt eligible FCF records with equal
1651  * probability. To perform integer manunipulation of random numbers with
1652  * size unit32_t, the lower 16 bits of the 32-bit random number returned
1653  * from random32() are taken as the random random number generated.
1654  *
1655  * Returns true when outcome is for the newly read FCF record should be
1656  * chosen; otherwise, return false when outcome is for keeping the previously
1657  * chosen FCF record.
1658  **/
1659 static bool
1660 lpfc_sli4_new_fcf_random_select(struct lpfc_hba *phba, uint32_t fcf_cnt)
1661 {
1662         uint32_t rand_num;
1663
1664         /* Get 16-bit uniform random number */
1665         rand_num = (0xFFFF & random32());
1666
1667         /* Decision with probability 1/fcf_cnt */
1668         if ((fcf_cnt * rand_num) < 0xFFFF)
1669                 return true;
1670         else
1671                 return false;
1672 }
1673
1674 /**
1675  * lpfc_sli4_fcf_rec_mbox_parse - Parse read_fcf mbox command.
1676  * @phba: pointer to lpfc hba data structure.
1677  * @mboxq: pointer to mailbox object.
1678  * @next_fcf_index: pointer to holder of next fcf index.
1679  *
1680  * This routine parses the non-embedded fcf mailbox command by performing the
1681  * necessarily error checking, non-embedded read FCF record mailbox command
1682  * SGE parsing, and endianness swapping.
1683  *
1684  * Returns the pointer to the new FCF record in the non-embedded mailbox
1685  * command DMA memory if successfully, other NULL.
1686  */
1687 static struct fcf_record *
1688 lpfc_sli4_fcf_rec_mbox_parse(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq,
1689                              uint16_t *next_fcf_index)
1690 {
1691         void *virt_addr;
1692         dma_addr_t phys_addr;
1693         struct lpfc_mbx_sge sge;
1694         struct lpfc_mbx_read_fcf_tbl *read_fcf;
1695         uint32_t shdr_status, shdr_add_status;
1696         union lpfc_sli4_cfg_shdr *shdr;
1697         struct fcf_record *new_fcf_record;
1698
1699         /* Get the first SGE entry from the non-embedded DMA memory. This
1700          * routine only uses a single SGE.
1701          */
1702         lpfc_sli4_mbx_sge_get(mboxq, 0, &sge);
1703         phys_addr = getPaddr(sge.pa_hi, sge.pa_lo);
1704         if (unlikely(!mboxq->sge_array)) {
1705                 lpfc_printf_log(phba, KERN_ERR, LOG_MBOX,
1706                                 "2524 Failed to get the non-embedded SGE "
1707                                 "virtual address\n");
1708                 return NULL;
1709         }
1710         virt_addr = mboxq->sge_array->addr[0];
1711
1712         shdr = (union lpfc_sli4_cfg_shdr *)virt_addr;
1713         shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
1714         shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response);
1715         if (shdr_status || shdr_add_status) {
1716                 if (shdr_status == STATUS_FCF_TABLE_EMPTY)
1717                         lpfc_printf_log(phba, KERN_ERR, LOG_FIP,
1718                                         "2726 READ_FCF_RECORD Indicates empty "
1719                                         "FCF table.\n");
1720                 else
1721                         lpfc_printf_log(phba, KERN_ERR, LOG_FIP,
1722                                         "2521 READ_FCF_RECORD mailbox failed "
1723                                         "with status x%x add_status x%x, "
1724                                         "mbx\n", shdr_status, shdr_add_status);
1725                 return NULL;
1726         }
1727
1728         /* Interpreting the returned information of the FCF record */
1729         read_fcf = (struct lpfc_mbx_read_fcf_tbl *)virt_addr;
1730         lpfc_sli_pcimem_bcopy(read_fcf, read_fcf,
1731                               sizeof(struct lpfc_mbx_read_fcf_tbl));
1732         *next_fcf_index = bf_get(lpfc_mbx_read_fcf_tbl_nxt_vindx, read_fcf);
1733         new_fcf_record = (struct fcf_record *)(virt_addr +
1734                           sizeof(struct lpfc_mbx_read_fcf_tbl));
1735         lpfc_sli_pcimem_bcopy(new_fcf_record, new_fcf_record,
1736                                 offsetof(struct fcf_record, vlan_bitmap));
1737         new_fcf_record->word137 = le32_to_cpu(new_fcf_record->word137);
1738         new_fcf_record->word138 = le32_to_cpu(new_fcf_record->word138);
1739
1740         return new_fcf_record;
1741 }
1742
1743 /**
1744  * lpfc_sli4_log_fcf_record_info - Log the information of a fcf record
1745  * @phba: pointer to lpfc hba data structure.
1746  * @fcf_record: pointer to the fcf record.
1747  * @vlan_id: the lowest vlan identifier associated to this fcf record.
1748  * @next_fcf_index: the index to the next fcf record in hba's fcf table.
1749  *
1750  * This routine logs the detailed FCF record if the LOG_FIP loggin is
1751  * enabled.
1752  **/
1753 static void
1754 lpfc_sli4_log_fcf_record_info(struct lpfc_hba *phba,
1755                               struct fcf_record *fcf_record,
1756                               uint16_t vlan_id,
1757                               uint16_t next_fcf_index)
1758 {
1759         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
1760                         "2764 READ_FCF_RECORD:\n"
1761                         "\tFCF_Index     : x%x\n"
1762                         "\tFCF_Avail     : x%x\n"
1763                         "\tFCF_Valid     : x%x\n"
1764                         "\tFIP_Priority  : x%x\n"
1765                         "\tMAC_Provider  : x%x\n"
1766                         "\tLowest VLANID : x%x\n"
1767                         "\tFCF_MAC Addr  : x%x:%x:%x:%x:%x:%x\n"
1768                         "\tFabric_Name   : x%x:%x:%x:%x:%x:%x:%x:%x\n"
1769                         "\tSwitch_Name   : x%x:%x:%x:%x:%x:%x:%x:%x\n"
1770                         "\tNext_FCF_Index: x%x\n",
1771                         bf_get(lpfc_fcf_record_fcf_index, fcf_record),
1772                         bf_get(lpfc_fcf_record_fcf_avail, fcf_record),
1773                         bf_get(lpfc_fcf_record_fcf_valid, fcf_record),
1774                         fcf_record->fip_priority,
1775                         bf_get(lpfc_fcf_record_mac_addr_prov, fcf_record),
1776                         vlan_id,
1777                         bf_get(lpfc_fcf_record_mac_0, fcf_record),
1778                         bf_get(lpfc_fcf_record_mac_1, fcf_record),
1779                         bf_get(lpfc_fcf_record_mac_2, fcf_record),
1780                         bf_get(lpfc_fcf_record_mac_3, fcf_record),
1781                         bf_get(lpfc_fcf_record_mac_4, fcf_record),
1782                         bf_get(lpfc_fcf_record_mac_5, fcf_record),
1783                         bf_get(lpfc_fcf_record_fab_name_0, fcf_record),
1784                         bf_get(lpfc_fcf_record_fab_name_1, fcf_record),
1785                         bf_get(lpfc_fcf_record_fab_name_2, fcf_record),
1786                         bf_get(lpfc_fcf_record_fab_name_3, fcf_record),
1787                         bf_get(lpfc_fcf_record_fab_name_4, fcf_record),
1788                         bf_get(lpfc_fcf_record_fab_name_5, fcf_record),
1789                         bf_get(lpfc_fcf_record_fab_name_6, fcf_record),
1790                         bf_get(lpfc_fcf_record_fab_name_7, fcf_record),
1791                         bf_get(lpfc_fcf_record_switch_name_0, fcf_record),
1792                         bf_get(lpfc_fcf_record_switch_name_1, fcf_record),
1793                         bf_get(lpfc_fcf_record_switch_name_2, fcf_record),
1794                         bf_get(lpfc_fcf_record_switch_name_3, fcf_record),
1795                         bf_get(lpfc_fcf_record_switch_name_4, fcf_record),
1796                         bf_get(lpfc_fcf_record_switch_name_5, fcf_record),
1797                         bf_get(lpfc_fcf_record_switch_name_6, fcf_record),
1798                         bf_get(lpfc_fcf_record_switch_name_7, fcf_record),
1799                         next_fcf_index);
1800 }
1801
1802 /**
1803  lpfc_sli4_fcf_record_match - testing new FCF record for matching existing FCF
1804  * @phba: pointer to lpfc hba data structure.
1805  * @fcf_rec: pointer to an existing FCF record.
1806  * @new_fcf_record: pointer to a new FCF record.
1807  * @new_vlan_id: vlan id from the new FCF record.
1808  *
1809  * This function performs matching test of a new FCF record against an existing
1810  * FCF record. If the new_vlan_id passed in is LPFC_FCOE_IGNORE_VID, vlan id
1811  * will not be used as part of the FCF record matching criteria.
1812  *
1813  * Returns true if all the fields matching, otherwise returns false.
1814  */
1815 static bool
1816 lpfc_sli4_fcf_record_match(struct lpfc_hba *phba,
1817                            struct lpfc_fcf_rec *fcf_rec,
1818                            struct fcf_record *new_fcf_record,
1819                            uint16_t new_vlan_id)
1820 {
1821         if (new_vlan_id != LPFC_FCOE_IGNORE_VID)
1822                 if (!lpfc_vlan_id_match(fcf_rec->vlan_id, new_vlan_id))
1823                         return false;
1824         if (!lpfc_mac_addr_match(fcf_rec->mac_addr, new_fcf_record))
1825                 return false;
1826         if (!lpfc_sw_name_match(fcf_rec->switch_name, new_fcf_record))
1827                 return false;
1828         if (!lpfc_fab_name_match(fcf_rec->fabric_name, new_fcf_record))
1829                 return false;
1830         return true;
1831 }
1832
1833 /**
1834  * lpfc_sli4_fcf_rr_next_proc - processing next roundrobin fcf
1835  * @vport: Pointer to vport object.
1836  * @fcf_index: index to next fcf.
1837  *
1838  * This function processing the roundrobin fcf failover to next fcf index.
1839  * When this function is invoked, there will be a current fcf registered
1840  * for flogi.
1841  * Return: 0 for continue retrying flogi on currently registered fcf;
1842  *         1 for stop flogi on currently registered fcf;
1843  */
1844 int lpfc_sli4_fcf_rr_next_proc(struct lpfc_vport *vport, uint16_t fcf_index)
1845 {
1846         struct lpfc_hba *phba = vport->phba;
1847         int rc;
1848
1849         if (fcf_index == LPFC_FCOE_FCF_NEXT_NONE) {
1850                 spin_lock_irq(&phba->hbalock);
1851                 if (phba->hba_flag & HBA_DEVLOSS_TMO) {
1852                         spin_unlock_irq(&phba->hbalock);
1853                         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
1854                                         "2872 Devloss tmo with no eligible "
1855                                         "FCF, unregister in-use FCF (x%x) "
1856                                         "and rescan FCF table\n",
1857                                         phba->fcf.current_rec.fcf_indx);
1858                         lpfc_unregister_fcf_rescan(phba);
1859                         goto stop_flogi_current_fcf;
1860                 }
1861                 /* Mark the end to FLOGI roundrobin failover */
1862                 phba->hba_flag &= ~FCF_RR_INPROG;
1863                 /* Allow action to new fcf asynchronous event */
1864                 phba->fcf.fcf_flag &= ~(FCF_AVAILABLE | FCF_SCAN_DONE);
1865                 spin_unlock_irq(&phba->hbalock);
1866                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
1867                                 "2865 No FCF available, stop roundrobin FCF "
1868                                 "failover and change port state:x%x/x%x\n",
1869                                 phba->pport->port_state, LPFC_VPORT_UNKNOWN);
1870                 phba->pport->port_state = LPFC_VPORT_UNKNOWN;
1871                 goto stop_flogi_current_fcf;
1872         } else {
1873                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_ELS,
1874                                 "2794 Try FLOGI roundrobin FCF failover to "
1875                                 "(x%x)\n", fcf_index);
1876                 rc = lpfc_sli4_fcf_rr_read_fcf_rec(phba, fcf_index);
1877                 if (rc)
1878                         lpfc_printf_log(phba, KERN_WARNING, LOG_FIP | LOG_ELS,
1879                                         "2761 FLOGI roundrobin FCF failover "
1880                                         "failed (rc:x%x) to read FCF (x%x)\n",
1881                                         rc, phba->fcf.current_rec.fcf_indx);
1882                 else
1883                         goto stop_flogi_current_fcf;
1884         }
1885         return 0;
1886
1887 stop_flogi_current_fcf:
1888         lpfc_can_disctmo(vport);
1889         return 1;
1890 }
1891
1892 /**
1893  * lpfc_mbx_cmpl_fcf_scan_read_fcf_rec - fcf scan read_fcf mbox cmpl handler.
1894  * @phba: pointer to lpfc hba data structure.
1895  * @mboxq: pointer to mailbox object.
1896  *
1897  * This function iterates through all the fcf records available in
1898  * HBA and chooses the optimal FCF record for discovery. After finding
1899  * the FCF for discovery it registers the FCF record and kicks start
1900  * discovery.
1901  * If FCF_IN_USE flag is set in currently used FCF, the routine tries to
1902  * use an FCF record which matches fabric name and mac address of the
1903  * currently used FCF record.
1904  * If the driver supports only one FCF, it will try to use the FCF record
1905  * used by BOOT_BIOS.
1906  */
1907 void
1908 lpfc_mbx_cmpl_fcf_scan_read_fcf_rec(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
1909 {
1910         struct fcf_record *new_fcf_record;
1911         uint32_t boot_flag, addr_mode;
1912         uint16_t fcf_index, next_fcf_index;
1913         struct lpfc_fcf_rec *fcf_rec = NULL;
1914         uint16_t vlan_id;
1915         uint32_t seed;
1916         bool select_new_fcf;
1917         int rc;
1918
1919         /* If there is pending FCoE event restart FCF table scan */
1920         if (lpfc_check_pending_fcoe_event(phba, LPFC_SKIP_UNREG_FCF)) {
1921                 lpfc_sli4_mbox_cmd_free(phba, mboxq);
1922                 return;
1923         }
1924
1925         /* Parse the FCF record from the non-embedded mailbox command */
1926         new_fcf_record = lpfc_sli4_fcf_rec_mbox_parse(phba, mboxq,
1927                                                       &next_fcf_index);
1928         if (!new_fcf_record) {
1929                 lpfc_printf_log(phba, KERN_ERR, LOG_FIP,
1930                                 "2765 Mailbox command READ_FCF_RECORD "
1931                                 "failed to retrieve a FCF record.\n");
1932                 /* Let next new FCF event trigger fast failover */
1933                 spin_lock_irq(&phba->hbalock);
1934                 phba->hba_flag &= ~FCF_TS_INPROG;
1935                 spin_unlock_irq(&phba->hbalock);
1936                 lpfc_sli4_mbox_cmd_free(phba, mboxq);
1937                 return;
1938         }
1939
1940         /* Check the FCF record against the connection list */
1941         rc = lpfc_match_fcf_conn_list(phba, new_fcf_record, &boot_flag,
1942                                       &addr_mode, &vlan_id);
1943
1944         /* Log the FCF record information if turned on */
1945         lpfc_sli4_log_fcf_record_info(phba, new_fcf_record, vlan_id,
1946                                       next_fcf_index);
1947
1948         /*
1949          * If the fcf record does not match with connect list entries
1950          * read the next entry; otherwise, this is an eligible FCF
1951          * record for roundrobin FCF failover.
1952          */
1953         if (!rc) {
1954                 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP,
1955                                 "2781 FCF (x%x) failed connection "
1956                                 "list check: (x%x/x%x)\n",
1957                                 bf_get(lpfc_fcf_record_fcf_index,
1958                                        new_fcf_record),
1959                                 bf_get(lpfc_fcf_record_fcf_avail,
1960                                        new_fcf_record),
1961                                 bf_get(lpfc_fcf_record_fcf_valid,
1962                                        new_fcf_record));
1963                 if ((phba->fcf.fcf_flag & FCF_IN_USE) &&
1964                     lpfc_sli4_fcf_record_match(phba, &phba->fcf.current_rec,
1965                     new_fcf_record, LPFC_FCOE_IGNORE_VID)) {
1966                         if (bf_get(lpfc_fcf_record_fcf_index, new_fcf_record) !=
1967                             phba->fcf.current_rec.fcf_indx) {
1968                                 lpfc_printf_log(phba, KERN_ERR, LOG_FIP,
1969                                         "2862 FCF (x%x) matches property "
1970                                         "of in-use FCF (x%x)\n",
1971                                         bf_get(lpfc_fcf_record_fcf_index,
1972                                                new_fcf_record),
1973                                         phba->fcf.current_rec.fcf_indx);
1974                                 goto read_next_fcf;
1975                         }
1976                         /*
1977                          * In case the current in-use FCF record becomes
1978                          * invalid/unavailable during FCF discovery that
1979                          * was not triggered by fast FCF failover process,
1980                          * treat it as fast FCF failover.
1981                          */
1982                         if (!(phba->fcf.fcf_flag & FCF_REDISC_PEND) &&
1983                             !(phba->fcf.fcf_flag & FCF_REDISC_FOV)) {
1984                                 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP,
1985                                                 "2835 Invalid in-use FCF "
1986                                                 "(x%x), enter FCF failover "
1987                                                 "table scan.\n",
1988                                                 phba->fcf.current_rec.fcf_indx);
1989                                 spin_lock_irq(&phba->hbalock);
1990                                 phba->fcf.fcf_flag |= FCF_REDISC_FOV;
1991                                 spin_unlock_irq(&phba->hbalock);
1992                                 lpfc_sli4_mbox_cmd_free(phba, mboxq);
1993                                 lpfc_sli4_fcf_scan_read_fcf_rec(phba,
1994                                                 LPFC_FCOE_FCF_GET_FIRST);
1995                                 return;
1996                         }
1997                 }
1998                 goto read_next_fcf;
1999         } else {
2000                 fcf_index = bf_get(lpfc_fcf_record_fcf_index, new_fcf_record);
2001                 rc = lpfc_sli4_fcf_rr_index_set(phba, fcf_index);
2002                 if (rc)
2003                         goto read_next_fcf;
2004         }
2005
2006         /*
2007          * If this is not the first FCF discovery of the HBA, use last
2008          * FCF record for the discovery. The condition that a rescan
2009          * matches the in-use FCF record: fabric name, switch name, mac
2010          * address, and vlan_id.
2011          */
2012         spin_lock_irq(&phba->hbalock);
2013         if (phba->fcf.fcf_flag & FCF_IN_USE) {
2014                 if (lpfc_sli4_fcf_record_match(phba, &phba->fcf.current_rec,
2015                     new_fcf_record, vlan_id)) {
2016                         if (bf_get(lpfc_fcf_record_fcf_index, new_fcf_record) ==
2017                             phba->fcf.current_rec.fcf_indx) {
2018                                 phba->fcf.fcf_flag |= FCF_AVAILABLE;
2019                                 if (phba->fcf.fcf_flag & FCF_REDISC_PEND)
2020                                         /* Stop FCF redisc wait timer */
2021                                         __lpfc_sli4_stop_fcf_redisc_wait_timer(
2022                                                                         phba);
2023                                 else if (phba->fcf.fcf_flag & FCF_REDISC_FOV)
2024                                         /* Fast failover, mark completed */
2025                                         phba->fcf.fcf_flag &= ~FCF_REDISC_FOV;
2026                                 spin_unlock_irq(&phba->hbalock);
2027                                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2028                                                 "2836 New FCF matches in-use "
2029                                                 "FCF (x%x)\n",
2030                                                 phba->fcf.current_rec.fcf_indx);
2031                                 goto out;
2032                         } else
2033                                 lpfc_printf_log(phba, KERN_ERR, LOG_FIP,
2034                                         "2863 New FCF (x%x) matches "
2035                                         "property of in-use FCF (x%x)\n",
2036                                         bf_get(lpfc_fcf_record_fcf_index,
2037                                                new_fcf_record),
2038                                         phba->fcf.current_rec.fcf_indx);
2039                 }
2040                 /*
2041                  * Read next FCF record from HBA searching for the matching
2042                  * with in-use record only if not during the fast failover
2043                  * period. In case of fast failover period, it shall try to
2044                  * determine whether the FCF record just read should be the
2045                  * next candidate.
2046                  */
2047                 if (!(phba->fcf.fcf_flag & FCF_REDISC_FOV)) {
2048                         spin_unlock_irq(&phba->hbalock);
2049                         goto read_next_fcf;
2050                 }
2051         }
2052         /*
2053          * Update on failover FCF record only if it's in FCF fast-failover
2054          * period; otherwise, update on current FCF record.
2055          */
2056         if (phba->fcf.fcf_flag & FCF_REDISC_FOV)
2057                 fcf_rec = &phba->fcf.failover_rec;
2058         else
2059                 fcf_rec = &phba->fcf.current_rec;
2060
2061         if (phba->fcf.fcf_flag & FCF_AVAILABLE) {
2062                 /*
2063                  * If the driver FCF record does not have boot flag
2064                  * set and new hba fcf record has boot flag set, use
2065                  * the new hba fcf record.
2066                  */
2067                 if (boot_flag && !(fcf_rec->flag & BOOT_ENABLE)) {
2068                         /* Choose this FCF record */
2069                         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2070                                         "2837 Update current FCF record "
2071                                         "(x%x) with new FCF record (x%x)\n",
2072                                         fcf_rec->fcf_indx,
2073                                         bf_get(lpfc_fcf_record_fcf_index,
2074                                         new_fcf_record));
2075                         __lpfc_update_fcf_record(phba, fcf_rec, new_fcf_record,
2076                                         addr_mode, vlan_id, BOOT_ENABLE);
2077                         spin_unlock_irq(&phba->hbalock);
2078                         goto read_next_fcf;
2079                 }
2080                 /*
2081                  * If the driver FCF record has boot flag set and the
2082                  * new hba FCF record does not have boot flag, read
2083                  * the next FCF record.
2084                  */
2085                 if (!boot_flag && (fcf_rec->flag & BOOT_ENABLE)) {
2086                         spin_unlock_irq(&phba->hbalock);
2087                         goto read_next_fcf;
2088                 }
2089                 /*
2090                  * If the new hba FCF record has lower priority value
2091                  * than the driver FCF record, use the new record.
2092                  */
2093                 if (new_fcf_record->fip_priority < fcf_rec->priority) {
2094                         /* Choose the new FCF record with lower priority */
2095                         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2096                                         "2838 Update current FCF record "
2097                                         "(x%x) with new FCF record (x%x)\n",
2098                                         fcf_rec->fcf_indx,
2099                                         bf_get(lpfc_fcf_record_fcf_index,
2100                                                new_fcf_record));
2101                         __lpfc_update_fcf_record(phba, fcf_rec, new_fcf_record,
2102                                         addr_mode, vlan_id, 0);
2103                         /* Reset running random FCF selection count */
2104                         phba->fcf.eligible_fcf_cnt = 1;
2105                 } else if (new_fcf_record->fip_priority == fcf_rec->priority) {
2106                         /* Update running random FCF selection count */
2107                         phba->fcf.eligible_fcf_cnt++;
2108                         select_new_fcf = lpfc_sli4_new_fcf_random_select(phba,
2109                                                 phba->fcf.eligible_fcf_cnt);
2110                         if (select_new_fcf) {
2111                                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2112                                         "2839 Update current FCF record "
2113                                         "(x%x) with new FCF record (x%x)\n",
2114                                         fcf_rec->fcf_indx,
2115                                         bf_get(lpfc_fcf_record_fcf_index,
2116                                                new_fcf_record));
2117                                 /* Choose the new FCF by random selection */
2118                                 __lpfc_update_fcf_record(phba, fcf_rec,
2119                                                          new_fcf_record,
2120                                                          addr_mode, vlan_id, 0);
2121                         }
2122                 }
2123                 spin_unlock_irq(&phba->hbalock);
2124                 goto read_next_fcf;
2125         }
2126         /*
2127          * This is the first suitable FCF record, choose this record for
2128          * initial best-fit FCF.
2129          */
2130         if (fcf_rec) {
2131                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2132                                 "2840 Update initial FCF candidate "
2133                                 "with FCF (x%x)\n",
2134                                 bf_get(lpfc_fcf_record_fcf_index,
2135                                        new_fcf_record));
2136                 __lpfc_update_fcf_record(phba, fcf_rec, new_fcf_record,
2137                                          addr_mode, vlan_id, (boot_flag ?
2138                                          BOOT_ENABLE : 0));
2139                 phba->fcf.fcf_flag |= FCF_AVAILABLE;
2140                 /* Setup initial running random FCF selection count */
2141                 phba->fcf.eligible_fcf_cnt = 1;
2142                 /* Seeding the random number generator for random selection */
2143                 seed = (uint32_t)(0xFFFFFFFF & jiffies);
2144                 srandom32(seed);
2145         }
2146         spin_unlock_irq(&phba->hbalock);
2147         goto read_next_fcf;
2148
2149 read_next_fcf:
2150         lpfc_sli4_mbox_cmd_free(phba, mboxq);
2151         if (next_fcf_index == LPFC_FCOE_FCF_NEXT_NONE || next_fcf_index == 0) {
2152                 if (phba->fcf.fcf_flag & FCF_REDISC_FOV) {
2153                         /*
2154                          * Case of FCF fast failover scan
2155                          */
2156
2157                         /*
2158                          * It has not found any suitable FCF record, cancel
2159                          * FCF scan inprogress, and do nothing
2160                          */
2161                         if (!(phba->fcf.failover_rec.flag & RECORD_VALID)) {
2162                                 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP,
2163                                                "2782 No suitable FCF found: "
2164                                                "(x%x/x%x)\n",
2165                                                phba->fcoe_eventtag_at_fcf_scan,
2166                                                bf_get(lpfc_fcf_record_fcf_index,
2167                                                       new_fcf_record));
2168                                 spin_lock_irq(&phba->hbalock);
2169                                 if (phba->hba_flag & HBA_DEVLOSS_TMO) {
2170                                         phba->hba_flag &= ~FCF_TS_INPROG;
2171                                         spin_unlock_irq(&phba->hbalock);
2172                                         /* Unregister in-use FCF and rescan */
2173                                         lpfc_printf_log(phba, KERN_INFO,
2174                                                         LOG_FIP,
2175                                                         "2864 On devloss tmo "
2176                                                         "unreg in-use FCF and "
2177                                                         "rescan FCF table\n");
2178                                         lpfc_unregister_fcf_rescan(phba);
2179                                         return;
2180                                 }
2181                                 /*
2182                                  * Let next new FCF event trigger fast failover
2183                                  */
2184                                 phba->hba_flag &= ~FCF_TS_INPROG;
2185                                 spin_unlock_irq(&phba->hbalock);
2186                                 return;
2187                         }
2188                         /*
2189                          * It has found a suitable FCF record that is not
2190                          * the same as in-use FCF record, unregister the
2191                          * in-use FCF record, replace the in-use FCF record
2192                          * with the new FCF record, mark FCF fast failover
2193                          * completed, and then start register the new FCF
2194                          * record.
2195                          */
2196
2197                         /* Unregister the current in-use FCF record */
2198                         lpfc_unregister_fcf(phba);
2199
2200                         /* Replace in-use record with the new record */
2201                         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2202                                         "2842 Replace in-use FCF (x%x) "
2203                                         "with failover FCF (x%x)\n",
2204                                         phba->fcf.current_rec.fcf_indx,
2205                                         phba->fcf.failover_rec.fcf_indx);
2206                         memcpy(&phba->fcf.current_rec,
2207                                &phba->fcf.failover_rec,
2208                                sizeof(struct lpfc_fcf_rec));
2209                         /*
2210                          * Mark the fast FCF failover rediscovery completed
2211                          * and the start of the first round of the roundrobin
2212                          * FCF failover.
2213                          */
2214                         spin_lock_irq(&phba->hbalock);
2215                         phba->fcf.fcf_flag &= ~FCF_REDISC_FOV;
2216                         spin_unlock_irq(&phba->hbalock);
2217                         /* Register to the new FCF record */
2218                         lpfc_register_fcf(phba);
2219                 } else {
2220                         /*
2221                          * In case of transaction period to fast FCF failover,
2222                          * do nothing when search to the end of the FCF table.
2223                          */
2224                         if ((phba->fcf.fcf_flag & FCF_REDISC_EVT) ||
2225                             (phba->fcf.fcf_flag & FCF_REDISC_PEND))
2226                                 return;
2227
2228                         if (phba->fcf.fcf_flag & FCF_IN_USE) {
2229                                 /*
2230                                  * In case the current in-use FCF record no
2231                                  * longer existed during FCF discovery that
2232                                  * was not triggered by fast FCF failover
2233                                  * process, treat it as fast FCF failover.
2234                                  */
2235                                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2236                                                 "2841 In-use FCF record (x%x) "
2237                                                 "not reported, entering fast "
2238                                                 "FCF failover mode scanning.\n",
2239                                                 phba->fcf.current_rec.fcf_indx);
2240                                 spin_lock_irq(&phba->hbalock);
2241                                 phba->fcf.fcf_flag |= FCF_REDISC_FOV;
2242                                 spin_unlock_irq(&phba->hbalock);
2243                                 lpfc_sli4_mbox_cmd_free(phba, mboxq);
2244                                 lpfc_sli4_fcf_scan_read_fcf_rec(phba,
2245                                                 LPFC_FCOE_FCF_GET_FIRST);
2246                                 return;
2247                         }
2248                         /* Register to the new FCF record */
2249                         lpfc_register_fcf(phba);
2250                 }
2251         } else
2252                 lpfc_sli4_fcf_scan_read_fcf_rec(phba, next_fcf_index);
2253         return;
2254
2255 out:
2256         lpfc_sli4_mbox_cmd_free(phba, mboxq);
2257         lpfc_register_fcf(phba);
2258
2259         return;
2260 }
2261
2262 /**
2263  * lpfc_mbx_cmpl_fcf_rr_read_fcf_rec - fcf roundrobin read_fcf mbox cmpl hdler
2264  * @phba: pointer to lpfc hba data structure.
2265  * @mboxq: pointer to mailbox object.
2266  *
2267  * This is the callback function for FLOGI failure roundrobin FCF failover
2268  * read FCF record mailbox command from the eligible FCF record bmask for
2269  * performing the failover. If the FCF read back is not valid/available, it
2270  * fails through to retrying FLOGI to the currently registered FCF again.
2271  * Otherwise, if the FCF read back is valid and available, it will set the
2272  * newly read FCF record to the failover FCF record, unregister currently
2273  * registered FCF record, copy the failover FCF record to the current
2274  * FCF record, and then register the current FCF record before proceeding
2275  * to trying FLOGI on the new failover FCF.
2276  */
2277 void
2278 lpfc_mbx_cmpl_fcf_rr_read_fcf_rec(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
2279 {
2280         struct fcf_record *new_fcf_record;
2281         uint32_t boot_flag, addr_mode;
2282         uint16_t next_fcf_index, fcf_index;
2283         uint16_t current_fcf_index;
2284         uint16_t vlan_id;
2285         int rc;
2286
2287         /* If link state is not up, stop the roundrobin failover process */
2288         if (phba->link_state < LPFC_LINK_UP) {
2289                 spin_lock_irq(&phba->hbalock);
2290                 phba->fcf.fcf_flag &= ~FCF_DISCOVERY;
2291                 phba->hba_flag &= ~FCF_RR_INPROG;
2292                 spin_unlock_irq(&phba->hbalock);
2293                 goto out;
2294         }
2295
2296         /* Parse the FCF record from the non-embedded mailbox command */
2297         new_fcf_record = lpfc_sli4_fcf_rec_mbox_parse(phba, mboxq,
2298                                                       &next_fcf_index);
2299         if (!new_fcf_record) {
2300                 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP,
2301                                 "2766 Mailbox command READ_FCF_RECORD "
2302                                 "failed to retrieve a FCF record.\n");
2303                 goto error_out;
2304         }
2305
2306         /* Get the needed parameters from FCF record */
2307         rc = lpfc_match_fcf_conn_list(phba, new_fcf_record, &boot_flag,
2308                                       &addr_mode, &vlan_id);
2309
2310         /* Log the FCF record information if turned on */
2311         lpfc_sli4_log_fcf_record_info(phba, new_fcf_record, vlan_id,
2312                                       next_fcf_index);
2313
2314         fcf_index = bf_get(lpfc_fcf_record_fcf_index, new_fcf_record);
2315         if (!rc) {
2316                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2317                                 "2848 Remove ineligible FCF (x%x) from "
2318                                 "from roundrobin bmask\n", fcf_index);
2319                 /* Clear roundrobin bmask bit for ineligible FCF */
2320                 lpfc_sli4_fcf_rr_index_clear(phba, fcf_index);
2321                 /* Perform next round of roundrobin FCF failover */
2322                 fcf_index = lpfc_sli4_fcf_rr_next_index_get(phba);
2323                 rc = lpfc_sli4_fcf_rr_next_proc(phba->pport, fcf_index);
2324                 if (rc)
2325                         goto out;
2326                 goto error_out;
2327         }
2328
2329         if (fcf_index == phba->fcf.current_rec.fcf_indx) {
2330                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2331                                 "2760 Perform FLOGI roundrobin FCF failover: "
2332                                 "FCF (x%x) back to FCF (x%x)\n",
2333                                 phba->fcf.current_rec.fcf_indx, fcf_index);
2334                 /* Wait 500 ms before retrying FLOGI to current FCF */
2335                 msleep(500);
2336                 lpfc_issue_init_vfi(phba->pport);
2337                 goto out;
2338         }
2339
2340         /* Upload new FCF record to the failover FCF record */
2341         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2342                         "2834 Update current FCF (x%x) with new FCF (x%x)\n",
2343                         phba->fcf.failover_rec.fcf_indx, fcf_index);
2344         spin_lock_irq(&phba->hbalock);
2345         __lpfc_update_fcf_record(phba, &phba->fcf.failover_rec,
2346                                  new_fcf_record, addr_mode, vlan_id,
2347                                  (boot_flag ? BOOT_ENABLE : 0));
2348         spin_unlock_irq(&phba->hbalock);
2349
2350         current_fcf_index = phba->fcf.current_rec.fcf_indx;
2351
2352         /* Unregister the current in-use FCF record */
2353         lpfc_unregister_fcf(phba);
2354
2355         /* Replace in-use record with the new record */
2356         memcpy(&phba->fcf.current_rec, &phba->fcf.failover_rec,
2357                sizeof(struct lpfc_fcf_rec));
2358
2359         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2360                         "2783 Perform FLOGI roundrobin FCF failover: FCF "
2361                         "(x%x) to FCF (x%x)\n", current_fcf_index, fcf_index);
2362
2363 error_out:
2364         lpfc_register_fcf(phba);
2365 out:
2366         lpfc_sli4_mbox_cmd_free(phba, mboxq);
2367 }
2368
2369 /**
2370  * lpfc_mbx_cmpl_read_fcf_rec - read fcf completion handler.
2371  * @phba: pointer to lpfc hba data structure.
2372  * @mboxq: pointer to mailbox object.
2373  *
2374  * This is the callback function of read FCF record mailbox command for
2375  * updating the eligible FCF bmask for FLOGI failure roundrobin FCF
2376  * failover when a new FCF event happened. If the FCF read back is
2377  * valid/available and it passes the connection list check, it updates
2378  * the bmask for the eligible FCF record for roundrobin failover.
2379  */
2380 void
2381 lpfc_mbx_cmpl_read_fcf_rec(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
2382 {
2383         struct fcf_record *new_fcf_record;
2384         uint32_t boot_flag, addr_mode;
2385         uint16_t fcf_index, next_fcf_index;
2386         uint16_t vlan_id;
2387         int rc;
2388
2389         /* If link state is not up, no need to proceed */
2390         if (phba->link_state < LPFC_LINK_UP)
2391                 goto out;
2392
2393         /* If FCF discovery period is over, no need to proceed */
2394         if (!(phba->fcf.fcf_flag & FCF_DISCOVERY))
2395                 goto out;
2396
2397         /* Parse the FCF record from the non-embedded mailbox command */
2398         new_fcf_record = lpfc_sli4_fcf_rec_mbox_parse(phba, mboxq,
2399                                                       &next_fcf_index);
2400         if (!new_fcf_record) {
2401                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2402                                 "2767 Mailbox command READ_FCF_RECORD "
2403                                 "failed to retrieve a FCF record.\n");
2404                 goto out;
2405         }
2406
2407         /* Check the connection list for eligibility */
2408         rc = lpfc_match_fcf_conn_list(phba, new_fcf_record, &boot_flag,
2409                                       &addr_mode, &vlan_id);
2410
2411         /* Log the FCF record information if turned on */
2412         lpfc_sli4_log_fcf_record_info(phba, new_fcf_record, vlan_id,
2413                                       next_fcf_index);
2414
2415         if (!rc)
2416                 goto out;
2417
2418         /* Update the eligible FCF record index bmask */
2419         fcf_index = bf_get(lpfc_fcf_record_fcf_index, new_fcf_record);
2420         rc = lpfc_sli4_fcf_rr_index_set(phba, fcf_index);
2421
2422 out:
2423         lpfc_sli4_mbox_cmd_free(phba, mboxq);
2424 }
2425
2426 /**
2427  * lpfc_init_vfi_cmpl - Completion handler for init_vfi mbox command.
2428  * @phba: pointer to lpfc hba data structure.
2429  * @mboxq: pointer to mailbox data structure.
2430  *
2431  * This function handles completion of init vfi mailbox command.
2432  */
2433 void
2434 lpfc_init_vfi_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
2435 {
2436         struct lpfc_vport *vport = mboxq->vport;
2437
2438         if (mboxq->u.mb.mbxStatus && (mboxq->u.mb.mbxStatus != 0x4002)) {
2439                 lpfc_printf_vlog(vport, KERN_ERR,
2440                                 LOG_MBOX,
2441                                 "2891 Init VFI mailbox failed 0x%x\n",
2442                                 mboxq->u.mb.mbxStatus);
2443                 mempool_free(mboxq, phba->mbox_mem_pool);
2444                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
2445                 return;
2446         }
2447         lpfc_initial_flogi(vport);
2448         mempool_free(mboxq, phba->mbox_mem_pool);
2449         return;
2450 }
2451
2452 /**
2453  * lpfc_issue_init_vfi - Issue init_vfi mailbox command.
2454  * @vport: pointer to lpfc_vport data structure.
2455  *
2456  * This function issue a init_vfi mailbox command to initialize the VFI and
2457  * VPI for the physical port.
2458  */
2459 void
2460 lpfc_issue_init_vfi(struct lpfc_vport *vport)
2461 {
2462         LPFC_MBOXQ_t *mboxq;
2463         int rc;
2464         struct lpfc_hba *phba = vport->phba;
2465
2466         mboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
2467         if (!mboxq) {
2468                 lpfc_printf_vlog(vport, KERN_ERR,
2469                         LOG_MBOX, "2892 Failed to allocate "
2470                         "init_vfi mailbox\n");
2471                 return;
2472         }
2473         lpfc_init_vfi(mboxq, vport);
2474         mboxq->mbox_cmpl = lpfc_init_vfi_cmpl;
2475         rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_NOWAIT);
2476         if (rc == MBX_NOT_FINISHED) {
2477                 lpfc_printf_vlog(vport, KERN_ERR,
2478                         LOG_MBOX, "2893 Failed to issue init_vfi mailbox\n");
2479                 mempool_free(mboxq, vport->phba->mbox_mem_pool);
2480         }
2481 }
2482
2483 /**
2484  * lpfc_init_vpi_cmpl - Completion handler for init_vpi mbox command.
2485  * @phba: pointer to lpfc hba data structure.
2486  * @mboxq: pointer to mailbox data structure.
2487  *
2488  * This function handles completion of init vpi mailbox command.
2489  */
2490 void
2491 lpfc_init_vpi_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
2492 {
2493         struct lpfc_vport *vport = mboxq->vport;
2494         struct lpfc_nodelist *ndlp;
2495         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2496
2497         if (mboxq->u.mb.mbxStatus) {
2498                 lpfc_printf_vlog(vport, KERN_ERR,
2499                                 LOG_MBOX,
2500                                 "2609 Init VPI mailbox failed 0x%x\n",
2501                                 mboxq->u.mb.mbxStatus);
2502                 mempool_free(mboxq, phba->mbox_mem_pool);
2503                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
2504                 return;
2505         }
2506         spin_lock_irq(shost->host_lock);
2507         vport->fc_flag &= ~FC_VPORT_NEEDS_INIT_VPI;
2508         spin_unlock_irq(shost->host_lock);
2509
2510         /* If this port is physical port or FDISC is done, do reg_vpi */
2511         if ((phba->pport == vport) || (vport->port_state == LPFC_FDISC)) {
2512                         ndlp = lpfc_findnode_did(vport, Fabric_DID);
2513                         if (!ndlp)
2514                                 lpfc_printf_vlog(vport, KERN_ERR,
2515                                         LOG_DISCOVERY,
2516                                         "2731 Cannot find fabric "
2517                                         "controller node\n");
2518                         else
2519                                 lpfc_register_new_vport(phba, vport, ndlp);
2520                         mempool_free(mboxq, phba->mbox_mem_pool);
2521                         return;
2522         }
2523
2524         if (phba->link_flag & LS_NPIV_FAB_SUPPORTED)
2525                 lpfc_initial_fdisc(vport);
2526         else {
2527                 lpfc_vport_set_state(vport, FC_VPORT_NO_FABRIC_SUPP);
2528                 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
2529                                  "2606 No NPIV Fabric support\n");
2530         }
2531         mempool_free(mboxq, phba->mbox_mem_pool);
2532         return;
2533 }
2534
2535 /**
2536  * lpfc_issue_init_vpi - Issue init_vpi mailbox command.
2537  * @vport: pointer to lpfc_vport data structure.
2538  *
2539  * This function issue a init_vpi mailbox command to initialize
2540  * VPI for the vport.
2541  */
2542 void
2543 lpfc_issue_init_vpi(struct lpfc_vport *vport)
2544 {
2545         LPFC_MBOXQ_t *mboxq;
2546         int rc;
2547
2548         mboxq = mempool_alloc(vport->phba->mbox_mem_pool, GFP_KERNEL);
2549         if (!mboxq) {
2550                 lpfc_printf_vlog(vport, KERN_ERR,
2551                         LOG_MBOX, "2607 Failed to allocate "
2552                         "init_vpi mailbox\n");
2553                 return;
2554         }
2555         lpfc_init_vpi(vport->phba, mboxq, vport->vpi);
2556         mboxq->vport = vport;
2557         mboxq->mbox_cmpl = lpfc_init_vpi_cmpl;
2558         rc = lpfc_sli_issue_mbox(vport->phba, mboxq, MBX_NOWAIT);
2559         if (rc == MBX_NOT_FINISHED) {
2560                 lpfc_printf_vlog(vport, KERN_ERR,
2561                         LOG_MBOX, "2608 Failed to issue init_vpi mailbox\n");
2562                 mempool_free(mboxq, vport->phba->mbox_mem_pool);
2563         }
2564 }
2565
2566 /**
2567  * lpfc_start_fdiscs - send fdiscs for each vports on this port.
2568  * @phba: pointer to lpfc hba data structure.
2569  *
2570  * This function loops through the list of vports on the @phba and issues an
2571  * FDISC if possible.
2572  */
2573 void
2574 lpfc_start_fdiscs(struct lpfc_hba *phba)
2575 {
2576         struct lpfc_vport **vports;
2577         int i;
2578
2579         vports = lpfc_create_vport_work_array(phba);
2580         if (vports != NULL) {
2581                 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
2582                         if (vports[i]->port_type == LPFC_PHYSICAL_PORT)
2583                                 continue;
2584                         /* There are no vpi for this vport */
2585                         if (vports[i]->vpi > phba->max_vpi) {
2586                                 lpfc_vport_set_state(vports[i],
2587                                                      FC_VPORT_FAILED);
2588                                 continue;
2589                         }
2590                         if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
2591                                 lpfc_vport_set_state(vports[i],
2592                                                      FC_VPORT_LINKDOWN);
2593                                 continue;
2594                         }
2595                         if (vports[i]->fc_flag & FC_VPORT_NEEDS_INIT_VPI) {
2596                                 lpfc_issue_init_vpi(vports[i]);
2597                                 continue;
2598                         }
2599                         if (phba->link_flag & LS_NPIV_FAB_SUPPORTED)
2600                                 lpfc_initial_fdisc(vports[i]);
2601                         else {
2602                                 lpfc_vport_set_state(vports[i],
2603                                                      FC_VPORT_NO_FABRIC_SUPP);
2604                                 lpfc_printf_vlog(vports[i], KERN_ERR,
2605                                                  LOG_ELS,
2606                                                  "0259 No NPIV "
2607                                                  "Fabric support\n");
2608                         }
2609                 }
2610         }
2611         lpfc_destroy_vport_work_array(phba, vports);
2612 }
2613
2614 void
2615 lpfc_mbx_cmpl_reg_vfi(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
2616 {
2617         struct lpfc_dmabuf *dmabuf = mboxq->context1;
2618         struct lpfc_vport *vport = mboxq->vport;
2619         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2620
2621         if (mboxq->u.mb.mbxStatus) {
2622                 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
2623                          "2018 REG_VFI mbxStatus error x%x "
2624                          "HBA state x%x\n",
2625                          mboxq->u.mb.mbxStatus, vport->port_state);
2626                 if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
2627                         /* FLOGI failed, use loop map to make discovery list */
2628                         lpfc_disc_list_loopmap(vport);
2629                         /* Start discovery */
2630                         lpfc_disc_start(vport);
2631                         goto fail_free_mem;
2632                 }
2633                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
2634                 goto fail_free_mem;
2635         }
2636         /* The VPI is implicitly registered when the VFI is registered */
2637         spin_lock_irq(shost->host_lock);
2638         vport->vpi_state |= LPFC_VPI_REGISTERED;
2639         vport->fc_flag |= FC_VFI_REGISTERED;
2640         vport->fc_flag &= ~FC_VPORT_NEEDS_REG_VPI;
2641         spin_unlock_irq(shost->host_lock);
2642
2643         if (vport->port_state == LPFC_FABRIC_CFG_LINK) {
2644                 /* For private loop just start discovery and we are done. */
2645                 if ((phba->fc_topology == LPFC_TOPOLOGY_LOOP) &&
2646                     (phba->alpa_map[0] == 0) &&
2647                     !(vport->fc_flag & FC_PUBLIC_LOOP)) {
2648                         /* Use loop map to make discovery list */
2649                         lpfc_disc_list_loopmap(vport);
2650                         /* Start discovery */
2651                         lpfc_disc_start(vport);
2652                 } else {
2653                         lpfc_start_fdiscs(phba);
2654                         lpfc_do_scr_ns_plogi(phba, vport);
2655                 }
2656         }
2657
2658 fail_free_mem:
2659         mempool_free(mboxq, phba->mbox_mem_pool);
2660         lpfc_mbuf_free(phba, dmabuf->virt, dmabuf->phys);
2661         kfree(dmabuf);
2662         return;
2663 }
2664
2665 static void
2666 lpfc_mbx_cmpl_read_sparam(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
2667 {
2668         MAILBOX_t *mb = &pmb->u.mb;
2669         struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) pmb->context1;
2670         struct lpfc_vport  *vport = pmb->vport;
2671
2672
2673         /* Check for error */
2674         if (mb->mbxStatus) {
2675                 /* READ_SPARAM mbox error <mbxStatus> state <hba_state> */
2676                 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
2677                                  "0319 READ_SPARAM mbxStatus error x%x "
2678                                  "hba state x%x>\n",
2679                                  mb->mbxStatus, vport->port_state);
2680                 lpfc_linkdown(phba);
2681                 goto out;
2682         }
2683
2684         memcpy((uint8_t *) &vport->fc_sparam, (uint8_t *) mp->virt,
2685                sizeof (struct serv_parm));
2686         if (phba->cfg_soft_wwnn)
2687                 u64_to_wwn(phba->cfg_soft_wwnn,
2688                            vport->fc_sparam.nodeName.u.wwn);
2689         if (phba->cfg_soft_wwpn)
2690                 u64_to_wwn(phba->cfg_soft_wwpn,
2691                            vport->fc_sparam.portName.u.wwn);
2692         memcpy(&vport->fc_nodename, &vport->fc_sparam.nodeName,
2693                sizeof(vport->fc_nodename));
2694         memcpy(&vport->fc_portname, &vport->fc_sparam.portName,
2695                sizeof(vport->fc_portname));
2696         if (vport->port_type == LPFC_PHYSICAL_PORT) {
2697                 memcpy(&phba->wwnn, &vport->fc_nodename, sizeof(phba->wwnn));
2698                 memcpy(&phba->wwpn, &vport->fc_portname, sizeof(phba->wwnn));
2699         }
2700
2701         lpfc_mbuf_free(phba, mp->virt, mp->phys);
2702         kfree(mp);
2703         mempool_free(pmb, phba->mbox_mem_pool);
2704         return;
2705
2706 out:
2707         pmb->context1 = NULL;
2708         lpfc_mbuf_free(phba, mp->virt, mp->phys);
2709         kfree(mp);
2710         lpfc_issue_clear_la(phba, vport);
2711         mempool_free(pmb, phba->mbox_mem_pool);
2712         return;
2713 }
2714
2715 static void
2716 lpfc_mbx_process_link_up(struct lpfc_hba *phba, struct lpfc_mbx_read_top *la)
2717 {
2718         struct lpfc_vport *vport = phba->pport;
2719         LPFC_MBOXQ_t *sparam_mbox, *cfglink_mbox = NULL;
2720         int i;
2721         struct lpfc_dmabuf *mp;
2722         int rc;
2723         struct fcf_record *fcf_record;
2724
2725         spin_lock_irq(&phba->hbalock);
2726         switch (bf_get(lpfc_mbx_read_top_link_spd, la)) {
2727         case LPFC_LINK_SPEED_1GHZ:
2728         case LPFC_LINK_SPEED_2GHZ:
2729         case LPFC_LINK_SPEED_4GHZ:
2730         case LPFC_LINK_SPEED_8GHZ:
2731         case LPFC_LINK_SPEED_10GHZ:
2732         case LPFC_LINK_SPEED_16GHZ:
2733                 phba->fc_linkspeed = bf_get(lpfc_mbx_read_top_link_spd, la);
2734                 break;
2735         default:
2736                 phba->fc_linkspeed = LPFC_LINK_SPEED_UNKNOWN;
2737                 break;
2738         }
2739
2740         phba->fc_topology = bf_get(lpfc_mbx_read_top_topology, la);
2741         phba->link_flag &= ~LS_NPIV_FAB_SUPPORTED;
2742
2743         if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
2744                 phba->sli3_options &= ~LPFC_SLI3_NPIV_ENABLED;
2745
2746                 /* if npiv is enabled and this adapter supports npiv log
2747                  * a message that npiv is not supported in this topology
2748                  */
2749                 if (phba->cfg_enable_npiv && phba->max_vpi)
2750                         lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
2751                                 "1309 Link Up Event npiv not supported in loop "
2752                                 "topology\n");
2753                                 /* Get Loop Map information */
2754                 if (bf_get(lpfc_mbx_read_top_il, la))
2755                         vport->fc_flag |= FC_LBIT;
2756
2757                 vport->fc_myDID = bf_get(lpfc_mbx_read_top_alpa_granted, la);
2758                 i = la->lilpBde64.tus.f.bdeSize;
2759
2760                 if (i == 0) {
2761                         phba->alpa_map[0] = 0;
2762                 } else {
2763                         if (vport->cfg_log_verbose & LOG_LINK_EVENT) {
2764                                 int numalpa, j, k;
2765                                 union {
2766                                         uint8_t pamap[16];
2767                                         struct {
2768                                                 uint32_t wd1;
2769                                                 uint32_t wd2;
2770                                                 uint32_t wd3;
2771                                                 uint32_t wd4;
2772                                         } pa;
2773                                 } un;
2774                                 numalpa = phba->alpa_map[0];
2775                                 j = 0;
2776                                 while (j < numalpa) {
2777                                         memset(un.pamap, 0, 16);
2778                                         for (k = 1; j < numalpa; k++) {
2779                                                 un.pamap[k - 1] =
2780                                                         phba->alpa_map[j + 1];
2781                                                 j++;
2782                                                 if (k == 16)
2783                                                         break;
2784                                         }
2785                                         /* Link Up Event ALPA map */
2786                                         lpfc_printf_log(phba,
2787                                                         KERN_WARNING,
2788                                                         LOG_LINK_EVENT,
2789                                                         "1304 Link Up Event "
2790                                                         "ALPA map Data: x%x "
2791                                                         "x%x x%x x%x\n",
2792                                                         un.pa.wd1, un.pa.wd2,
2793                                                         un.pa.wd3, un.pa.wd4);
2794                                 }
2795                         }
2796                 }
2797         } else {
2798                 if (!(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)) {
2799                         if (phba->max_vpi && phba->cfg_enable_npiv &&
2800                            (phba->sli_rev == 3))
2801                                 phba->sli3_options |= LPFC_SLI3_NPIV_ENABLED;
2802                 }
2803                 vport->fc_myDID = phba->fc_pref_DID;
2804                 vport->fc_flag |= FC_LBIT;
2805         }
2806         spin_unlock_irq(&phba->hbalock);
2807
2808         lpfc_linkup(phba);
2809         sparam_mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
2810         if (!sparam_mbox)
2811                 goto out;
2812
2813         rc = lpfc_read_sparam(phba, sparam_mbox, 0);
2814         if (rc) {
2815                 mempool_free(sparam_mbox, phba->mbox_mem_pool);
2816                 goto out;
2817         }
2818         sparam_mbox->vport = vport;
2819         sparam_mbox->mbox_cmpl = lpfc_mbx_cmpl_read_sparam;
2820         rc = lpfc_sli_issue_mbox(phba, sparam_mbox, MBX_NOWAIT);
2821         if (rc == MBX_NOT_FINISHED) {
2822                 mp = (struct lpfc_dmabuf *) sparam_mbox->context1;
2823                 lpfc_mbuf_free(phba, mp->virt, mp->phys);
2824                 kfree(mp);
2825                 mempool_free(sparam_mbox, phba->mbox_mem_pool);
2826                 goto out;
2827         }
2828
2829         if (!(phba->hba_flag & HBA_FCOE_MODE)) {
2830                 cfglink_mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
2831                 if (!cfglink_mbox)
2832                         goto out;
2833                 vport->port_state = LPFC_LOCAL_CFG_LINK;
2834                 lpfc_config_link(phba, cfglink_mbox);
2835                 cfglink_mbox->vport = vport;
2836                 cfglink_mbox->mbox_cmpl = lpfc_mbx_cmpl_local_config_link;
2837                 rc = lpfc_sli_issue_mbox(phba, cfglink_mbox, MBX_NOWAIT);
2838                 if (rc == MBX_NOT_FINISHED) {
2839                         mempool_free(cfglink_mbox, phba->mbox_mem_pool);
2840                         goto out;
2841                 }
2842         } else {
2843                 vport->port_state = LPFC_VPORT_UNKNOWN;
2844                 /*
2845                  * Add the driver's default FCF record at FCF index 0 now. This
2846                  * is phase 1 implementation that support FCF index 0 and driver
2847                  * defaults.
2848                  */
2849                 if (!(phba->hba_flag & HBA_FIP_SUPPORT)) {
2850                         fcf_record = kzalloc(sizeof(struct fcf_record),
2851                                         GFP_KERNEL);
2852                         if (unlikely(!fcf_record)) {
2853                                 lpfc_printf_log(phba, KERN_ERR,
2854                                         LOG_MBOX | LOG_SLI,
2855                                         "2554 Could not allocate memmory for "
2856                                         "fcf record\n");
2857                                 rc = -ENODEV;
2858                                 goto out;
2859                         }
2860
2861                         lpfc_sli4_build_dflt_fcf_record(phba, fcf_record,
2862                                                 LPFC_FCOE_FCF_DEF_INDEX);
2863                         rc = lpfc_sli4_add_fcf_record(phba, fcf_record);
2864                         if (unlikely(rc)) {
2865                                 lpfc_printf_log(phba, KERN_ERR,
2866                                         LOG_MBOX | LOG_SLI,
2867                                         "2013 Could not manually add FCF "
2868                                         "record 0, status %d\n", rc);
2869                                 rc = -ENODEV;
2870                                 kfree(fcf_record);
2871                                 goto out;
2872                         }
2873                         kfree(fcf_record);
2874                 }
2875                 /*
2876                  * The driver is expected to do FIP/FCF. Call the port
2877                  * and get the FCF Table.
2878                  */
2879                 spin_lock_irq(&phba->hbalock);
2880                 if (phba->hba_flag & FCF_TS_INPROG) {
2881                         spin_unlock_irq(&phba->hbalock);
2882                         return;
2883                 }
2884                 /* This is the initial FCF discovery scan */
2885                 phba->fcf.fcf_flag |= FCF_INIT_DISC;
2886                 spin_unlock_irq(&phba->hbalock);
2887                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY,
2888                                 "2778 Start FCF table scan at linkup\n");
2889                 rc = lpfc_sli4_fcf_scan_read_fcf_rec(phba,
2890                                                      LPFC_FCOE_FCF_GET_FIRST);
2891                 if (rc) {
2892                         spin_lock_irq(&phba->hbalock);
2893                         phba->fcf.fcf_flag &= ~FCF_INIT_DISC;
2894                         spin_unlock_irq(&phba->hbalock);
2895                         goto out;
2896                 }
2897                 /* Reset FCF roundrobin bmask for new discovery */
2898                 memset(phba->fcf.fcf_rr_bmask, 0,
2899                        sizeof(*phba->fcf.fcf_rr_bmask));
2900         }
2901
2902         return;
2903 out:
2904         lpfc_vport_set_state(vport, FC_VPORT_FAILED);
2905         lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
2906                          "0263 Discovery Mailbox error: state: 0x%x : %p %p\n",
2907                          vport->port_state, sparam_mbox, cfglink_mbox);
2908         lpfc_issue_clear_la(phba, vport);
2909         return;
2910 }
2911
2912 static void
2913 lpfc_enable_la(struct lpfc_hba *phba)
2914 {
2915         uint32_t control;
2916         struct lpfc_sli *psli = &phba->sli;
2917         spin_lock_irq(&phba->hbalock);
2918         psli->sli_flag |= LPFC_PROCESS_LA;
2919         if (phba->sli_rev <= LPFC_SLI_REV3) {
2920                 control = readl(phba->HCregaddr);
2921                 control |= HC_LAINT_ENA;
2922                 writel(control, phba->HCregaddr);
2923                 readl(phba->HCregaddr); /* flush */
2924         }
2925         spin_unlock_irq(&phba->hbalock);
2926 }
2927
2928 static void
2929 lpfc_mbx_issue_link_down(struct lpfc_hba *phba)
2930 {
2931         lpfc_linkdown(phba);
2932         lpfc_enable_la(phba);
2933         lpfc_unregister_unused_fcf(phba);
2934         /* turn on Link Attention interrupts - no CLEAR_LA needed */
2935 }
2936
2937
2938 /*
2939  * This routine handles processing a READ_TOPOLOGY mailbox
2940  * command upon completion. It is setup in the LPFC_MBOXQ
2941  * as the completion routine when the command is
2942  * handed off to the SLI layer.
2943  */
2944 void
2945 lpfc_mbx_cmpl_read_topology(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
2946 {
2947         struct lpfc_vport *vport = pmb->vport;
2948         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
2949         struct lpfc_mbx_read_top *la;
2950         MAILBOX_t *mb = &pmb->u.mb;
2951         struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
2952
2953         /* Unblock ELS traffic */
2954         phba->sli.ring[LPFC_ELS_RING].flag &= ~LPFC_STOP_IOCB_EVENT;
2955         /* Check for error */
2956         if (mb->mbxStatus) {
2957                 lpfc_printf_log(phba, KERN_INFO, LOG_LINK_EVENT,
2958                                 "1307 READ_LA mbox error x%x state x%x\n",
2959                                 mb->mbxStatus, vport->port_state);
2960                 lpfc_mbx_issue_link_down(phba);
2961                 phba->link_state = LPFC_HBA_ERROR;
2962                 goto lpfc_mbx_cmpl_read_topology_free_mbuf;
2963         }
2964
2965         la = (struct lpfc_mbx_read_top *) &pmb->u.mb.un.varReadTop;
2966
2967         memcpy(&phba->alpa_map[0], mp->virt, 128);
2968
2969         spin_lock_irq(shost->host_lock);
2970         if (bf_get(lpfc_mbx_read_top_pb, la))
2971                 vport->fc_flag |= FC_BYPASSED_MODE;
2972         else
2973                 vport->fc_flag &= ~FC_BYPASSED_MODE;
2974         spin_unlock_irq(shost->host_lock);
2975
2976         if ((phba->fc_eventTag  < la->eventTag) ||
2977             (phba->fc_eventTag == la->eventTag)) {
2978                 phba->fc_stat.LinkMultiEvent++;
2979                 if (bf_get(lpfc_mbx_read_top_att_type, la) == LPFC_ATT_LINK_UP)
2980                         if (phba->fc_eventTag != 0)
2981                                 lpfc_linkdown(phba);
2982         }
2983
2984         phba->fc_eventTag = la->eventTag;
2985         spin_lock_irq(&phba->hbalock);
2986         if (bf_get(lpfc_mbx_read_top_mm, la))
2987                 phba->sli.sli_flag |= LPFC_MENLO_MAINT;
2988         else
2989                 phba->sli.sli_flag &= ~LPFC_MENLO_MAINT;
2990         spin_unlock_irq(&phba->hbalock);
2991
2992         phba->link_events++;
2993         if ((bf_get(lpfc_mbx_read_top_att_type, la) == LPFC_ATT_LINK_UP) &&
2994             (!bf_get(lpfc_mbx_read_top_mm, la))) {
2995                 phba->fc_stat.LinkUp++;
2996                 if (phba->link_flag & LS_LOOPBACK_MODE) {
2997                         lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
2998                                         "1306 Link Up Event in loop back mode "
2999                                         "x%x received Data: x%x x%x x%x x%x\n",
3000                                         la->eventTag, phba->fc_eventTag,
3001                                         bf_get(lpfc_mbx_read_top_alpa_granted,
3002                                                la),
3003                                         bf_get(lpfc_mbx_read_top_link_spd, la),
3004                                         phba->alpa_map[0]);
3005                 } else {
3006                         lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
3007                                         "1303 Link Up Event x%x received "
3008                                         "Data: x%x x%x x%x x%x x%x x%x %d\n",
3009                                         la->eventTag, phba->fc_eventTag,
3010                                         bf_get(lpfc_mbx_read_top_alpa_granted,
3011                                                la),
3012                                         bf_get(lpfc_mbx_read_top_link_spd, la),
3013                                         phba->alpa_map[0],
3014                                         bf_get(lpfc_mbx_read_top_mm, la),
3015                                         bf_get(lpfc_mbx_read_top_fa, la),
3016                                         phba->wait_4_mlo_maint_flg);
3017                 }
3018                 lpfc_mbx_process_link_up(phba, la);
3019         } else if (bf_get(lpfc_mbx_read_top_att_type, la) ==
3020                    LPFC_ATT_LINK_DOWN) {
3021                 phba->fc_stat.LinkDown++;
3022                 if (phba->link_flag & LS_LOOPBACK_MODE) {
3023                         lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
3024                                 "1308 Link Down Event in loop back mode "
3025                                 "x%x received "
3026                                 "Data: x%x x%x x%x\n",
3027                                 la->eventTag, phba->fc_eventTag,
3028                                 phba->pport->port_state, vport->fc_flag);
3029                 }
3030                 else {
3031                         lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
3032                                 "1305 Link Down Event x%x received "
3033                                 "Data: x%x x%x x%x x%x x%x\n",
3034                                 la->eventTag, phba->fc_eventTag,
3035                                 phba->pport->port_state, vport->fc_flag,
3036                                 bf_get(lpfc_mbx_read_top_mm, la),
3037                                 bf_get(lpfc_mbx_read_top_fa, la));
3038                 }
3039                 lpfc_mbx_issue_link_down(phba);
3040         }
3041         if ((bf_get(lpfc_mbx_read_top_mm, la)) &&
3042             (bf_get(lpfc_mbx_read_top_att_type, la) == LPFC_ATT_LINK_UP)) {
3043                 if (phba->link_state != LPFC_LINK_DOWN) {
3044                         phba->fc_stat.LinkDown++;
3045                         lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
3046                                 "1312 Link Down Event x%x received "
3047                                 "Data: x%x x%x x%x\n",
3048                                 la->eventTag, phba->fc_eventTag,
3049                                 phba->pport->port_state, vport->fc_flag);
3050                         lpfc_mbx_issue_link_down(phba);
3051                 } else
3052                         lpfc_enable_la(phba);
3053
3054                 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
3055                                 "1310 Menlo Maint Mode Link up Event x%x rcvd "
3056                                 "Data: x%x x%x x%x\n",
3057                                 la->eventTag, phba->fc_eventTag,
3058                                 phba->pport->port_state, vport->fc_flag);
3059                 /*
3060                  * The cmnd that triggered this will be waiting for this
3061                  * signal.
3062                  */
3063                 /* WAKEUP for MENLO_SET_MODE or MENLO_RESET command. */
3064                 if (phba->wait_4_mlo_maint_flg) {
3065                         phba->wait_4_mlo_maint_flg = 0;
3066                         wake_up_interruptible(&phba->wait_4_mlo_m_q);
3067                 }
3068         }
3069
3070         if (bf_get(lpfc_mbx_read_top_fa, la)) {
3071                 if (bf_get(lpfc_mbx_read_top_mm, la))
3072                         lpfc_issue_clear_la(phba, vport);
3073                 lpfc_printf_log(phba, KERN_INFO, LOG_LINK_EVENT,
3074                                 "1311 fa %d\n",
3075                                 bf_get(lpfc_mbx_read_top_fa, la));
3076         }
3077
3078 lpfc_mbx_cmpl_read_topology_free_mbuf:
3079         lpfc_mbuf_free(phba, mp->virt, mp->phys);
3080         kfree(mp);
3081         mempool_free(pmb, phba->mbox_mem_pool);
3082         return;
3083 }
3084
3085 /*
3086  * This routine handles processing a REG_LOGIN mailbox
3087  * command upon completion. It is setup in the LPFC_MBOXQ
3088  * as the completion routine when the command is
3089  * handed off to the SLI layer.
3090  */
3091 void
3092 lpfc_mbx_cmpl_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
3093 {
3094         struct lpfc_vport  *vport = pmb->vport;
3095         struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
3096         struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) pmb->context2;
3097         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
3098
3099         pmb->context1 = NULL;
3100         pmb->context2 = NULL;
3101
3102         if (ndlp->nlp_flag & NLP_REG_LOGIN_SEND)
3103                 ndlp->nlp_flag &= ~NLP_REG_LOGIN_SEND;
3104
3105         if (ndlp->nlp_flag &  NLP_IGNR_REG_CMPL ||
3106                 ndlp->nlp_state != NLP_STE_REG_LOGIN_ISSUE) {
3107                 /* We rcvd a rscn after issuing this
3108                  * mbox reg login, we may have cycled
3109                  * back through the state and be
3110                  * back at reg login state so this
3111                  * mbox needs to be ignored becase
3112                  * there is another reg login in
3113                  * proccess.
3114                  */
3115                 spin_lock_irq(shost->host_lock);
3116                 ndlp->nlp_flag &= ~NLP_IGNR_REG_CMPL;
3117                 spin_unlock_irq(shost->host_lock);
3118                 if (phba->sli_rev == LPFC_SLI_REV4)
3119                         lpfc_sli4_free_rpi(phba,
3120                                 pmb->u.mb.un.varRegLogin.rpi);
3121
3122         } else
3123                 /* Good status, call state machine */
3124                 lpfc_disc_state_machine(vport, ndlp, pmb,
3125                                 NLP_EVT_CMPL_REG_LOGIN);
3126
3127         lpfc_mbuf_free(phba, mp->virt, mp->phys);
3128         kfree(mp);
3129         mempool_free(pmb, phba->mbox_mem_pool);
3130         /* decrement the node reference count held for this callback
3131          * function.
3132          */
3133         lpfc_nlp_put(ndlp);
3134
3135         return;
3136 }
3137
3138 static void
3139 lpfc_mbx_cmpl_unreg_vpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
3140 {
3141         MAILBOX_t *mb = &pmb->u.mb;
3142         struct lpfc_vport *vport = pmb->vport;
3143         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
3144
3145         switch (mb->mbxStatus) {
3146         case 0x0011:
3147         case 0x0020:
3148                 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
3149                                  "0911 cmpl_unreg_vpi, mb status = 0x%x\n",
3150                                  mb->mbxStatus);
3151                 break;
3152         /* If VPI is busy, reset the HBA */
3153         case 0x9700:
3154                 lpfc_printf_vlog(vport, KERN_ERR, LOG_NODE,
3155                         "2798 Unreg_vpi failed vpi 0x%x, mb status = 0x%x\n",
3156                         vport->vpi, mb->mbxStatus);
3157                 if (!(phba->pport->load_flag & FC_UNLOADING))
3158                         lpfc_workq_post_event(phba, NULL, NULL,
3159                                 LPFC_EVT_RESET_HBA);
3160         }
3161         spin_lock_irq(shost->host_lock);
3162         vport->vpi_state &= ~LPFC_VPI_REGISTERED;
3163         vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
3164         spin_unlock_irq(shost->host_lock);
3165         vport->unreg_vpi_cmpl = VPORT_OK;
3166         mempool_free(pmb, phba->mbox_mem_pool);
3167         lpfc_cleanup_vports_rrqs(vport);
3168         /*
3169          * This shost reference might have been taken at the beginning of
3170          * lpfc_vport_delete()
3171          */
3172         if ((vport->load_flag & FC_UNLOADING) && (vport != phba->pport))
3173                 scsi_host_put(shost);
3174 }
3175
3176 int
3177 lpfc_mbx_unreg_vpi(struct lpfc_vport *vport)
3178 {
3179         struct lpfc_hba  *phba = vport->phba;
3180         LPFC_MBOXQ_t *mbox;
3181         int rc;
3182
3183         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
3184         if (!mbox)
3185                 return 1;
3186
3187         lpfc_unreg_vpi(phba, vport->vpi, mbox);
3188         mbox->vport = vport;
3189         mbox->mbox_cmpl = lpfc_mbx_cmpl_unreg_vpi;
3190         rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
3191         if (rc == MBX_NOT_FINISHED) {
3192                 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX | LOG_VPORT,
3193                                  "1800 Could not issue unreg_vpi\n");
3194                 mempool_free(mbox, phba->mbox_mem_pool);
3195                 vport->unreg_vpi_cmpl = VPORT_ERROR;
3196                 return rc;
3197         }
3198         return 0;
3199 }
3200
3201 static void
3202 lpfc_mbx_cmpl_reg_vpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
3203 {
3204         struct lpfc_vport *vport = pmb->vport;
3205         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
3206         MAILBOX_t *mb = &pmb->u.mb;
3207
3208         switch (mb->mbxStatus) {
3209         case 0x0011:
3210         case 0x9601:
3211         case 0x9602:
3212                 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
3213                                  "0912 cmpl_reg_vpi, mb status = 0x%x\n",
3214                                  mb->mbxStatus);
3215                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
3216                 spin_lock_irq(shost->host_lock);
3217                 vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP);
3218                 spin_unlock_irq(shost->host_lock);
3219                 vport->fc_myDID = 0;
3220                 goto out;
3221         }
3222
3223         spin_lock_irq(shost->host_lock);
3224         vport->vpi_state |= LPFC_VPI_REGISTERED;
3225         vport->fc_flag &= ~FC_VPORT_NEEDS_REG_VPI;
3226         spin_unlock_irq(shost->host_lock);
3227         vport->num_disc_nodes = 0;
3228         /* go thru NPR list and issue ELS PLOGIs */
3229         if (vport->fc_npr_cnt)
3230                 lpfc_els_disc_plogi(vport);
3231
3232         if (!vport->num_disc_nodes) {
3233                 spin_lock_irq(shost->host_lock);
3234                 vport->fc_flag &= ~FC_NDISC_ACTIVE;
3235                 spin_unlock_irq(shost->host_lock);
3236                 lpfc_can_disctmo(vport);
3237         }
3238         vport->port_state = LPFC_VPORT_READY;
3239
3240 out:
3241         mempool_free(pmb, phba->mbox_mem_pool);
3242         return;
3243 }
3244
3245 /**
3246  * lpfc_create_static_vport - Read HBA config region to create static vports.
3247  * @phba: pointer to lpfc hba data structure.
3248  *
3249  * This routine issue a DUMP mailbox command for config region 22 to get
3250  * the list of static vports to be created. The function create vports
3251  * based on the information returned from the HBA.
3252  **/
3253 void
3254 lpfc_create_static_vport(struct lpfc_hba *phba)
3255 {
3256         LPFC_MBOXQ_t *pmb = NULL;
3257         MAILBOX_t *mb;
3258         struct static_vport_info *vport_info;
3259         int rc = 0, i;
3260         struct fc_vport_identifiers vport_id;
3261         struct fc_vport *new_fc_vport;
3262         struct Scsi_Host *shost;
3263         struct lpfc_vport *vport;
3264         uint16_t offset = 0;
3265         uint8_t *vport_buff;
3266         struct lpfc_dmabuf *mp;
3267         uint32_t byte_count = 0;
3268
3269         pmb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
3270         if (!pmb) {
3271                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
3272                                 "0542 lpfc_create_static_vport failed to"
3273                                 " allocate mailbox memory\n");
3274                 return;
3275         }
3276
3277         mb = &pmb->u.mb;
3278
3279         vport_info = kzalloc(sizeof(struct static_vport_info), GFP_KERNEL);
3280         if (!vport_info) {
3281                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
3282                                 "0543 lpfc_create_static_vport failed to"
3283                                 " allocate vport_info\n");
3284                 mempool_free(pmb, phba->mbox_mem_pool);
3285                 return;
3286         }
3287
3288         vport_buff = (uint8_t *) vport_info;
3289         do {
3290                 if (lpfc_dump_static_vport(phba, pmb, offset))
3291                         goto out;
3292
3293                 pmb->vport = phba->pport;
3294                 rc = lpfc_sli_issue_mbox_wait(phba, pmb, LPFC_MBOX_TMO);
3295
3296                 if ((rc != MBX_SUCCESS) || mb->mbxStatus) {
3297                         lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
3298                                 "0544 lpfc_create_static_vport failed to"
3299                                 " issue dump mailbox command ret 0x%x "
3300                                 "status 0x%x\n",
3301                                 rc, mb->mbxStatus);
3302                         goto out;
3303                 }
3304
3305                 if (phba->sli_rev == LPFC_SLI_REV4) {
3306                         byte_count = pmb->u.mqe.un.mb_words[5];
3307                         mp = (struct lpfc_dmabuf *) pmb->context2;
3308                         if (byte_count > sizeof(struct static_vport_info) -
3309                                         offset)
3310                                 byte_count = sizeof(struct static_vport_info)
3311                                         - offset;
3312                         memcpy(vport_buff + offset, mp->virt, byte_count);
3313                         offset += byte_count;
3314                 } else {
3315                         if (mb->un.varDmp.word_cnt >
3316                                 sizeof(struct static_vport_info) - offset)
3317                                 mb->un.varDmp.word_cnt =
3318                                         sizeof(struct static_vport_info)
3319                                                 - offset;
3320                         byte_count = mb->un.varDmp.word_cnt;
3321                         lpfc_sli_pcimem_bcopy(((uint8_t *)mb) + DMP_RSP_OFFSET,
3322                                 vport_buff + offset,
3323                                 byte_count);
3324
3325                         offset += byte_count;
3326                 }
3327
3328         } while (byte_count &&
3329                 offset < sizeof(struct static_vport_info));
3330
3331
3332         if ((le32_to_cpu(vport_info->signature) != VPORT_INFO_SIG) ||
3333                 ((le32_to_cpu(vport_info->rev) & VPORT_INFO_REV_MASK)
3334                         != VPORT_INFO_REV)) {
3335                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
3336                         "0545 lpfc_create_static_vport bad"
3337                         " information header 0x%x 0x%x\n",
3338                         le32_to_cpu(vport_info->signature),
3339                         le32_to_cpu(vport_info->rev) & VPORT_INFO_REV_MASK);
3340
3341                 goto out;
3342         }
3343
3344         shost = lpfc_shost_from_vport(phba->pport);
3345
3346         for (i = 0; i < MAX_STATIC_VPORT_COUNT; i++) {
3347                 memset(&vport_id, 0, sizeof(vport_id));
3348                 vport_id.port_name = wwn_to_u64(vport_info->vport_list[i].wwpn);
3349                 vport_id.node_name = wwn_to_u64(vport_info->vport_list[i].wwnn);
3350                 if (!vport_id.port_name || !vport_id.node_name)
3351                         continue;
3352
3353                 vport_id.roles = FC_PORT_ROLE_FCP_INITIATOR;
3354                 vport_id.vport_type = FC_PORTTYPE_NPIV;
3355                 vport_id.disable = false;
3356                 new_fc_vport = fc_vport_create(shost, 0, &vport_id);
3357
3358                 if (!new_fc_vport) {
3359                         lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
3360                                 "0546 lpfc_create_static_vport failed to"
3361                                 " create vport\n");
3362                         continue;
3363                 }
3364
3365                 vport = *(struct lpfc_vport **)new_fc_vport->dd_data;
3366                 vport->vport_flag |= STATIC_VPORT;
3367         }
3368
3369 out:
3370         kfree(vport_info);
3371         if (rc != MBX_TIMEOUT) {
3372                 if (pmb->context2) {
3373                         mp = (struct lpfc_dmabuf *) pmb->context2;
3374                         lpfc_mbuf_free(phba, mp->virt, mp->phys);
3375                         kfree(mp);
3376                 }
3377                 mempool_free(pmb, phba->mbox_mem_pool);
3378         }
3379
3380         return;
3381 }
3382
3383 /*
3384  * This routine handles processing a Fabric REG_LOGIN mailbox
3385  * command upon completion. It is setup in the LPFC_MBOXQ
3386  * as the completion routine when the command is
3387  * handed off to the SLI layer.
3388  */
3389 void
3390 lpfc_mbx_cmpl_fabric_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
3391 {
3392         struct lpfc_vport *vport = pmb->vport;
3393         MAILBOX_t *mb = &pmb->u.mb;
3394         struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
3395         struct lpfc_nodelist *ndlp;
3396
3397         ndlp = (struct lpfc_nodelist *) pmb->context2;
3398         pmb->context1 = NULL;
3399         pmb->context2 = NULL;
3400
3401         if (mb->mbxStatus) {
3402                 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
3403                                  "0258 Register Fabric login error: 0x%x\n",
3404                                  mb->mbxStatus);
3405                 lpfc_mbuf_free(phba, mp->virt, mp->phys);
3406                 kfree(mp);
3407                 mempool_free(pmb, phba->mbox_mem_pool);
3408
3409                 if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
3410                         /* FLOGI failed, use loop map to make discovery list */
3411                         lpfc_disc_list_loopmap(vport);
3412
3413                         /* Start discovery */
3414                         lpfc_disc_start(vport);
3415                         /* Decrement the reference count to ndlp after the
3416                          * reference to the ndlp are done.
3417                          */
3418                         lpfc_nlp_put(ndlp);
3419                         return;
3420                 }
3421
3422                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
3423                 /* Decrement the reference count to ndlp after the reference
3424                  * to the ndlp are done.
3425                  */
3426                 lpfc_nlp_put(ndlp);
3427                 return;
3428         }
3429
3430         ndlp->nlp_rpi = mb->un.varWords[0];
3431         ndlp->nlp_flag |= NLP_RPI_VALID;
3432         ndlp->nlp_type |= NLP_FABRIC;
3433         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
3434
3435         if (vport->port_state == LPFC_FABRIC_CFG_LINK) {
3436                 /* when physical port receive logo donot start
3437                  * vport discovery */
3438                 if (!(vport->fc_flag & FC_LOGO_RCVD_DID_CHNG))
3439                         lpfc_start_fdiscs(phba);
3440                 else
3441                         vport->fc_flag &= ~FC_LOGO_RCVD_DID_CHNG ;
3442                 lpfc_do_scr_ns_plogi(phba, vport);
3443         }
3444
3445         lpfc_mbuf_free(phba, mp->virt, mp->phys);
3446         kfree(mp);
3447         mempool_free(pmb, phba->mbox_mem_pool);
3448
3449         /* Drop the reference count from the mbox at the end after
3450          * all the current reference to the ndlp have been done.
3451          */
3452         lpfc_nlp_put(ndlp);
3453         return;
3454 }
3455
3456 /*
3457  * This routine handles processing a NameServer REG_LOGIN mailbox
3458  * command upon completion. It is setup in the LPFC_MBOXQ
3459  * as the completion routine when the command is
3460  * handed off to the SLI layer.
3461  */
3462 void
3463 lpfc_mbx_cmpl_ns_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
3464 {
3465         MAILBOX_t *mb = &pmb->u.mb;
3466         struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
3467         struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) pmb->context2;
3468         struct lpfc_vport *vport = pmb->vport;
3469
3470         pmb->context1 = NULL;
3471         pmb->context2 = NULL;
3472
3473         if (mb->mbxStatus) {
3474 out:
3475                 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
3476                                  "0260 Register NameServer error: 0x%x\n",
3477                                  mb->mbxStatus);
3478                 /* decrement the node reference count held for this
3479                  * callback function.
3480                  */
3481                 lpfc_nlp_put(ndlp);
3482                 lpfc_mbuf_free(phba, mp->virt, mp->phys);
3483                 kfree(mp);
3484                 mempool_free(pmb, phba->mbox_mem_pool);
3485
3486                 /* If no other thread is using the ndlp, free it */
3487                 lpfc_nlp_not_used(ndlp);
3488
3489                 if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
3490                         /*
3491                          * RegLogin failed, use loop map to make discovery
3492                          * list
3493                          */
3494                         lpfc_disc_list_loopmap(vport);
3495
3496                         /* Start discovery */
3497                         lpfc_disc_start(vport);
3498                         return;
3499                 }
3500                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
3501                 return;
3502         }
3503
3504         ndlp->nlp_rpi = mb->un.varWords[0];
3505         ndlp->nlp_flag |= NLP_RPI_VALID;
3506         ndlp->nlp_type |= NLP_FABRIC;
3507         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
3508
3509         if (vport->port_state < LPFC_VPORT_READY) {
3510                 /* Link up discovery requires Fabric registration. */
3511                 lpfc_ns_cmd(vport, SLI_CTNS_RFF_ID, 0, 0); /* Do this first! */
3512                 lpfc_ns_cmd(vport, SLI_CTNS_RNN_ID, 0, 0);
3513                 lpfc_ns_cmd(vport, SLI_CTNS_RSNN_NN, 0, 0);
3514                 lpfc_ns_cmd(vport, SLI_CTNS_RSPN_ID, 0, 0);
3515                 lpfc_ns_cmd(vport, SLI_CTNS_RFT_ID, 0, 0);
3516
3517                 /* Issue SCR just before NameServer GID_FT Query */
3518                 lpfc_issue_els_scr(vport, SCR_DID, 0);
3519         }
3520
3521         vport->fc_ns_retry = 0;
3522         /* Good status, issue CT Request to NameServer */
3523         if (lpfc_ns_cmd(vport, SLI_CTNS_GID_FT, 0, 0)) {
3524                 /* Cannot issue NameServer Query, so finish up discovery */
3525                 goto out;
3526         }
3527
3528         /* decrement the node reference count held for this
3529          * callback function.
3530          */
3531         lpfc_nlp_put(ndlp);
3532         lpfc_mbuf_free(phba, mp->virt, mp->phys);
3533         kfree(mp);
3534         mempool_free(pmb, phba->mbox_mem_pool);
3535
3536         return;
3537 }
3538
3539 static void
3540 lpfc_register_remote_port(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
3541 {
3542         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3543         struct fc_rport  *rport;
3544         struct lpfc_rport_data *rdata;
3545         struct fc_rport_identifiers rport_ids;
3546         struct lpfc_hba  *phba = vport->phba;
3547
3548         /* Remote port has reappeared. Re-register w/ FC transport */
3549         rport_ids.node_name = wwn_to_u64(ndlp->nlp_nodename.u.wwn);
3550         rport_ids.port_name = wwn_to_u64(ndlp->nlp_portname.u.wwn);
3551         rport_ids.port_id = ndlp->nlp_DID;
3552         rport_ids.roles = FC_RPORT_ROLE_UNKNOWN;
3553
3554         /*
3555          * We leave our node pointer in rport->dd_data when we unregister a
3556          * FCP target port.  But fc_remote_port_add zeros the space to which
3557          * rport->dd_data points.  So, if we're reusing a previously
3558          * registered port, drop the reference that we took the last time we
3559          * registered the port.
3560          */
3561         if (ndlp->rport && ndlp->rport->dd_data &&
3562             ((struct lpfc_rport_data *) ndlp->rport->dd_data)->pnode == ndlp)
3563                 lpfc_nlp_put(ndlp);
3564
3565         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
3566                 "rport add:       did:x%x flg:x%x type x%x",
3567                 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type);
3568
3569         ndlp->rport = rport = fc_remote_port_add(shost, 0, &rport_ids);
3570         if (!rport || !get_device(&rport->dev)) {
3571                 dev_printk(KERN_WARNING, &phba->pcidev->dev,
3572                            "Warning: fc_remote_port_add failed\n");
3573                 return;
3574         }
3575
3576         /* initialize static port data */
3577         rport->maxframe_size = ndlp->nlp_maxframe;
3578         rport->supported_classes = ndlp->nlp_class_sup;
3579         rdata = rport->dd_data;
3580         rdata->pnode = lpfc_nlp_get(ndlp);
3581
3582         if (ndlp->nlp_type & NLP_FCP_TARGET)
3583                 rport_ids.roles |= FC_RPORT_ROLE_FCP_TARGET;
3584         if (ndlp->nlp_type & NLP_FCP_INITIATOR)
3585                 rport_ids.roles |= FC_RPORT_ROLE_FCP_INITIATOR;
3586
3587
3588         if (rport_ids.roles !=  FC_RPORT_ROLE_UNKNOWN)
3589                 fc_remote_port_rolechg(rport, rport_ids.roles);
3590
3591         if ((rport->scsi_target_id != -1) &&
3592             (rport->scsi_target_id < LPFC_MAX_TARGET)) {
3593                 ndlp->nlp_sid = rport->scsi_target_id;
3594         }
3595         return;
3596 }
3597
3598 static void
3599 lpfc_unregister_remote_port(struct lpfc_nodelist *ndlp)
3600 {
3601         struct fc_rport *rport = ndlp->rport;
3602
3603         lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_RPORT,
3604                 "rport delete:    did:x%x flg:x%x type x%x",
3605                 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type);
3606
3607         fc_remote_port_delete(rport);
3608
3609         return;
3610 }
3611
3612 static void
3613 lpfc_nlp_counters(struct lpfc_vport *vport, int state, int count)
3614 {
3615         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3616
3617         spin_lock_irq(shost->host_lock);
3618         switch (state) {
3619         case NLP_STE_UNUSED_NODE:
3620                 vport->fc_unused_cnt += count;
3621                 break;
3622         case NLP_STE_PLOGI_ISSUE:
3623                 vport->fc_plogi_cnt += count;
3624                 break;
3625         case NLP_STE_ADISC_ISSUE:
3626                 vport->fc_adisc_cnt += count;
3627                 break;
3628         case NLP_STE_REG_LOGIN_ISSUE:
3629                 vport->fc_reglogin_cnt += count;
3630                 break;
3631         case NLP_STE_PRLI_ISSUE:
3632                 vport->fc_prli_cnt += count;
3633                 break;
3634         case NLP_STE_UNMAPPED_NODE:
3635                 vport->fc_unmap_cnt += count;
3636                 break;
3637         case NLP_STE_MAPPED_NODE:
3638                 vport->fc_map_cnt += count;
3639                 break;
3640         case NLP_STE_NPR_NODE:
3641                 vport->fc_npr_cnt += count;
3642                 break;
3643         }
3644         spin_unlock_irq(shost->host_lock);
3645 }
3646
3647 static void
3648 lpfc_nlp_state_cleanup(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
3649                        int old_state, int new_state)
3650 {
3651         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3652
3653         if (new_state == NLP_STE_UNMAPPED_NODE) {
3654                 ndlp->nlp_flag &= ~NLP_NODEV_REMOVE;
3655                 ndlp->nlp_type |= NLP_FC_NODE;
3656         }
3657         if (new_state == NLP_STE_MAPPED_NODE)
3658                 ndlp->nlp_flag &= ~NLP_NODEV_REMOVE;
3659         if (new_state == NLP_STE_NPR_NODE)
3660                 ndlp->nlp_flag &= ~NLP_RCV_PLOGI;
3661
3662         /* Transport interface */
3663         if (ndlp->rport && (old_state == NLP_STE_MAPPED_NODE ||
3664                             old_state == NLP_STE_UNMAPPED_NODE)) {
3665                 vport->phba->nport_event_cnt++;
3666                 lpfc_unregister_remote_port(ndlp);
3667         }
3668
3669         if (new_state ==  NLP_STE_MAPPED_NODE ||
3670             new_state == NLP_STE_UNMAPPED_NODE) {
3671                 vport->phba->nport_event_cnt++;
3672                 /*
3673                  * Tell the fc transport about the port, if we haven't
3674                  * already. If we have, and it's a scsi entity, be
3675                  * sure to unblock any attached scsi devices
3676                  */
3677                 lpfc_register_remote_port(vport, ndlp);
3678         }
3679         if ((new_state ==  NLP_STE_MAPPED_NODE) &&
3680                 (vport->stat_data_enabled)) {
3681                 /*
3682                  * A new target is discovered, if there is no buffer for
3683                  * statistical data collection allocate buffer.
3684                  */
3685                 ndlp->lat_data = kcalloc(LPFC_MAX_BUCKET_COUNT,
3686                                          sizeof(struct lpfc_scsicmd_bkt),
3687                                          GFP_KERNEL);
3688
3689                 if (!ndlp->lat_data)
3690                         lpfc_printf_vlog(vport, KERN_ERR, LOG_NODE,
3691                                 "0286 lpfc_nlp_state_cleanup failed to "
3692                                 "allocate statistical data buffer DID "
3693                                 "0x%x\n", ndlp->nlp_DID);
3694         }
3695         /*
3696          * if we added to Mapped list, but the remote port
3697          * registration failed or assigned a target id outside
3698          * our presentable range - move the node to the
3699          * Unmapped List
3700          */
3701         if (new_state == NLP_STE_MAPPED_NODE &&
3702             (!ndlp->rport ||
3703              ndlp->rport->scsi_target_id == -1 ||
3704              ndlp->rport->scsi_target_id >= LPFC_MAX_TARGET)) {
3705                 spin_lock_irq(shost->host_lock);
3706                 ndlp->nlp_flag |= NLP_TGT_NO_SCSIID;
3707                 spin_unlock_irq(shost->host_lock);
3708                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
3709         }
3710 }
3711
3712 static char *
3713 lpfc_nlp_state_name(char *buffer, size_t size, int state)
3714 {
3715         static char *states[] = {
3716                 [NLP_STE_UNUSED_NODE] = "UNUSED",
3717                 [NLP_STE_PLOGI_ISSUE] = "PLOGI",
3718                 [NLP_STE_ADISC_ISSUE] = "ADISC",
3719                 [NLP_STE_REG_LOGIN_ISSUE] = "REGLOGIN",
3720                 [NLP_STE_PRLI_ISSUE] = "PRLI",
3721                 [NLP_STE_UNMAPPED_NODE] = "UNMAPPED",
3722                 [NLP_STE_MAPPED_NODE] = "MAPPED",
3723                 [NLP_STE_NPR_NODE] = "NPR",
3724         };
3725
3726         if (state < NLP_STE_MAX_STATE && states[state])
3727                 strlcpy(buffer, states[state], size);
3728         else
3729                 snprintf(buffer, size, "unknown (%d)", state);
3730         return buffer;
3731 }
3732
3733 void
3734 lpfc_nlp_set_state(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
3735                    int state)
3736 {
3737         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3738         int  old_state = ndlp->nlp_state;
3739         char name1[16], name2[16];
3740
3741         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
3742                          "0904 NPort state transition x%06x, %s -> %s\n",
3743                          ndlp->nlp_DID,
3744                          lpfc_nlp_state_name(name1, sizeof(name1), old_state),
3745                          lpfc_nlp_state_name(name2, sizeof(name2), state));
3746
3747         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE,
3748                 "node statechg    did:x%x old:%d ste:%d",
3749                 ndlp->nlp_DID, old_state, state);
3750
3751         if (old_state == NLP_STE_NPR_NODE &&
3752             state != NLP_STE_NPR_NODE)
3753                 lpfc_cancel_retry_delay_tmo(vport, ndlp);
3754         if (old_state == NLP_STE_UNMAPPED_NODE) {
3755                 ndlp->nlp_flag &= ~NLP_TGT_NO_SCSIID;
3756                 ndlp->nlp_type &= ~NLP_FC_NODE;
3757         }
3758
3759         if (list_empty(&ndlp->nlp_listp)) {
3760                 spin_lock_irq(shost->host_lock);
3761                 list_add_tail(&ndlp->nlp_listp, &vport->fc_nodes);
3762                 spin_unlock_irq(shost->host_lock);
3763         } else if (old_state)
3764                 lpfc_nlp_counters(vport, old_state, -1);
3765
3766         ndlp->nlp_state = state;
3767         lpfc_nlp_counters(vport, state, 1);
3768         lpfc_nlp_state_cleanup(vport, ndlp, old_state, state);
3769 }
3770
3771 void
3772 lpfc_enqueue_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
3773 {
3774         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3775
3776         if (list_empty(&ndlp->nlp_listp)) {
3777                 spin_lock_irq(shost->host_lock);
3778                 list_add_tail(&ndlp->nlp_listp, &vport->fc_nodes);
3779                 spin_unlock_irq(shost->host_lock);
3780         }
3781 }
3782
3783 void
3784 lpfc_dequeue_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
3785 {
3786         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3787
3788         lpfc_cancel_retry_delay_tmo(vport, ndlp);
3789         if (ndlp->nlp_state && !list_empty(&ndlp->nlp_listp))
3790                 lpfc_nlp_counters(vport, ndlp->nlp_state, -1);
3791         spin_lock_irq(shost->host_lock);
3792         list_del_init(&ndlp->nlp_listp);
3793         spin_unlock_irq(shost->host_lock);
3794         lpfc_nlp_state_cleanup(vport, ndlp, ndlp->nlp_state,
3795                                 NLP_STE_UNUSED_NODE);
3796 }
3797
3798 static void
3799 lpfc_disable_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
3800 {
3801         lpfc_cancel_retry_delay_tmo(vport, ndlp);
3802         if (ndlp->nlp_state && !list_empty(&ndlp->nlp_listp))
3803                 lpfc_nlp_counters(vport, ndlp->nlp_state, -1);
3804         lpfc_nlp_state_cleanup(vport, ndlp, ndlp->nlp_state,
3805                                 NLP_STE_UNUSED_NODE);
3806 }
3807 /**
3808  * lpfc_initialize_node - Initialize all fields of node object
3809  * @vport: Pointer to Virtual Port object.
3810  * @ndlp: Pointer to FC node object.
3811  * @did: FC_ID of the node.
3812  *
3813  * This function is always called when node object need to be initialized.
3814  * It initializes all the fields of the node object. Although the reference
3815  * to phba from @ndlp can be obtained indirectly through it's reference to
3816  * @vport, a direct reference to phba is taken here by @ndlp. This is due
3817  * to the life-span of the @ndlp might go beyond the existence of @vport as
3818  * the final release of ndlp is determined by its reference count. And, the
3819  * operation on @ndlp needs the reference to phba.
3820  **/
3821 static inline void
3822 lpfc_initialize_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
3823         uint32_t did)
3824 {
3825         INIT_LIST_HEAD(&ndlp->els_retry_evt.evt_listp);
3826         INIT_LIST_HEAD(&ndlp->dev_loss_evt.evt_listp);
3827         init_timer(&ndlp->nlp_delayfunc);
3828         ndlp->nlp_delayfunc.function = lpfc_els_retry_delay;
3829         ndlp->nlp_delayfunc.data = (unsigned long)ndlp;
3830         ndlp->nlp_DID = did;
3831         ndlp->vport = vport;
3832         ndlp->phba = vport->phba;
3833         ndlp->nlp_sid = NLP_NO_SID;
3834         kref_init(&ndlp->kref);
3835         NLP_INT_NODE_ACT(ndlp);
3836         atomic_set(&ndlp->cmd_pending, 0);
3837         ndlp->cmd_qdepth = vport->cfg_tgt_queue_depth;
3838 }
3839
3840 struct lpfc_nodelist *
3841 lpfc_enable_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
3842                  int state)
3843 {
3844         struct lpfc_hba *phba = vport->phba;
3845         uint32_t did;
3846         unsigned long flags;
3847
3848         if (!ndlp)
3849                 return NULL;
3850
3851         spin_lock_irqsave(&phba->ndlp_lock, flags);
3852         /* The ndlp should not be in memory free mode */
3853         if (NLP_CHK_FREE_REQ(ndlp)) {
3854                 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
3855                 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NODE,
3856                                 "0277 lpfc_enable_node: ndlp:x%p "
3857                                 "usgmap:x%x refcnt:%d\n",
3858                                 (void *)ndlp, ndlp->nlp_usg_map,
3859                                 atomic_read(&ndlp->kref.refcount));
3860                 return NULL;
3861         }
3862         /* The ndlp should not already be in active mode */
3863         if (NLP_CHK_NODE_ACT(ndlp)) {
3864                 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
3865                 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NODE,
3866                                 "0278 lpfc_enable_node: ndlp:x%p "
3867                                 "usgmap:x%x refcnt:%d\n",
3868                                 (void *)ndlp, ndlp->nlp_usg_map,
3869                                 atomic_read(&ndlp->kref.refcount));
3870                 return NULL;
3871         }
3872
3873         /* Keep the original DID */
3874         did = ndlp->nlp_DID;
3875
3876         /* re-initialize ndlp except of ndlp linked list pointer */
3877         memset((((char *)ndlp) + sizeof (struct list_head)), 0,
3878                 sizeof (struct lpfc_nodelist) - sizeof (struct list_head));
3879         lpfc_initialize_node(vport, ndlp, did);
3880
3881         spin_unlock_irqrestore(&phba->ndlp_lock, flags);
3882
3883         if (state != NLP_STE_UNUSED_NODE)
3884                 lpfc_nlp_set_state(vport, ndlp, state);
3885
3886         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE,
3887                 "node enable:       did:x%x",
3888                 ndlp->nlp_DID, 0, 0);
3889         return ndlp;
3890 }
3891
3892 void
3893 lpfc_drop_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
3894 {
3895         /*
3896          * Use of lpfc_drop_node and UNUSED list: lpfc_drop_node should
3897          * be used if we wish to issue the "last" lpfc_nlp_put() to remove
3898          * the ndlp from the vport. The ndlp marked as UNUSED on the list
3899          * until ALL other outstanding threads have completed. We check
3900          * that the ndlp not already in the UNUSED state before we proceed.
3901          */
3902         if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
3903                 return;
3904         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNUSED_NODE);
3905         lpfc_nlp_put(ndlp);
3906         return;
3907 }
3908
3909 /*
3910  * Start / ReStart rescue timer for Discovery / RSCN handling
3911  */
3912 void
3913 lpfc_set_disctmo(struct lpfc_vport *vport)
3914 {
3915         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3916         struct lpfc_hba  *phba = vport->phba;
3917         uint32_t tmo;
3918
3919         if (vport->port_state == LPFC_LOCAL_CFG_LINK) {
3920                 /* For FAN, timeout should be greater than edtov */
3921                 tmo = (((phba->fc_edtov + 999) / 1000) + 1);
3922         } else {
3923                 /* Normal discovery timeout should be > than ELS/CT timeout
3924                  * FC spec states we need 3 * ratov for CT requests
3925                  */
3926                 tmo = ((phba->fc_ratov * 3) + 3);
3927         }
3928
3929
3930         if (!timer_pending(&vport->fc_disctmo)) {
3931                 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
3932                         "set disc timer:  tmo:x%x state:x%x flg:x%x",
3933                         tmo, vport->port_state, vport->fc_flag);
3934         }
3935
3936         mod_timer(&vport->fc_disctmo, jiffies + HZ * tmo);
3937         spin_lock_irq(shost->host_lock);
3938         vport->fc_flag |= FC_DISC_TMO;
3939         spin_unlock_irq(shost->host_lock);
3940
3941         /* Start Discovery Timer state <hba_state> */
3942         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
3943                          "0247 Start Discovery Timer state x%x "
3944                          "Data: x%x x%lx x%x x%x\n",
3945                          vport->port_state, tmo,
3946                          (unsigned long)&vport->fc_disctmo, vport->fc_plogi_cnt,
3947                          vport->fc_adisc_cnt);
3948
3949         return;
3950 }
3951
3952 /*
3953  * Cancel rescue timer for Discovery / RSCN handling
3954  */
3955 int
3956 lpfc_can_disctmo(struct lpfc_vport *vport)
3957 {
3958         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3959         unsigned long iflags;
3960
3961         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
3962                 "can disc timer:  state:x%x rtry:x%x flg:x%x",
3963                 vport->port_state, vport->fc_ns_retry, vport->fc_flag);
3964
3965         /* Turn off discovery timer if its running */
3966         if (vport->fc_flag & FC_DISC_TMO) {
3967                 spin_lock_irqsave(shost->host_lock, iflags);
3968                 vport->fc_flag &= ~FC_DISC_TMO;
3969                 spin_unlock_irqrestore(shost->host_lock, iflags);
3970                 del_timer_sync(&vport->fc_disctmo);
3971                 spin_lock_irqsave(&vport->work_port_lock, iflags);
3972                 vport->work_port_events &= ~WORKER_DISC_TMO;
3973                 spin_unlock_irqrestore(&vport->work_port_lock, iflags);
3974         }
3975
3976         /* Cancel Discovery Timer state <hba_state> */
3977         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
3978                          "0248 Cancel Discovery Timer state x%x "
3979                          "Data: x%x x%x x%x\n",
3980                          vport->port_state, vport->fc_flag,
3981                          vport->fc_plogi_cnt, vport->fc_adisc_cnt);
3982         return 0;
3983 }
3984
3985 /*
3986  * Check specified ring for outstanding IOCB on the SLI queue
3987  * Return true if iocb matches the specified nport
3988  */
3989 int
3990 lpfc_check_sli_ndlp(struct lpfc_hba *phba,
3991                     struct lpfc_sli_ring *pring,
3992                     struct lpfc_iocbq *iocb,
3993                     struct lpfc_nodelist *ndlp)
3994 {
3995         struct lpfc_sli *psli = &phba->sli;
3996         IOCB_t *icmd = &iocb->iocb;
3997         struct lpfc_vport    *vport = ndlp->vport;
3998
3999         if (iocb->vport != vport)
4000                 return 0;
4001
4002         if (pring->ringno == LPFC_ELS_RING) {
4003                 switch (icmd->ulpCommand) {
4004                 case CMD_GEN_REQUEST64_CR:
4005                         if (iocb->context_un.ndlp == ndlp)
4006                                 return 1;
4007                 case CMD_ELS_REQUEST64_CR:
4008                         if (icmd->un.elsreq64.remoteID == ndlp->nlp_DID)
4009                                 return 1;
4010                 case CMD_XMIT_ELS_RSP64_CX:
4011                         if (iocb->context1 == (uint8_t *) ndlp)
4012                                 return 1;
4013                 }
4014         } else if (pring->ringno == psli->extra_ring) {
4015
4016         } else if (pring->ringno == psli->fcp_ring) {
4017                 /* Skip match check if waiting to relogin to FCP target */
4018                 if ((ndlp->nlp_type & NLP_FCP_TARGET) &&
4019                     (ndlp->nlp_flag & NLP_DELAY_TMO)) {
4020                         return 0;
4021                 }
4022                 if (icmd->ulpContext == (volatile ushort)ndlp->nlp_rpi) {
4023                         return 1;
4024                 }
4025         } else if (pring->ringno == psli->next_ring) {
4026
4027         }
4028         return 0;
4029 }
4030
4031 /*
4032  * Free resources / clean up outstanding I/Os
4033  * associated with nlp_rpi in the LPFC_NODELIST entry.
4034  */
4035 static int
4036 lpfc_no_rpi(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
4037 {
4038         LIST_HEAD(completions);
4039         struct lpfc_sli *psli;
4040         struct lpfc_sli_ring *pring;
4041         struct lpfc_iocbq *iocb, *next_iocb;
4042         uint32_t i;
4043
4044         lpfc_fabric_abort_nport(ndlp);
4045
4046         /*
4047          * Everything that matches on txcmplq will be returned
4048          * by firmware with a no rpi error.
4049          */
4050         psli = &phba->sli;
4051         if (ndlp->nlp_flag & NLP_RPI_VALID) {
4052                 /* Now process each ring */
4053                 for (i = 0; i < psli->num_rings; i++) {
4054                         pring = &psli->ring[i];
4055
4056                         spin_lock_irq(&phba->hbalock);
4057                         list_for_each_entry_safe(iocb, next_iocb, &pring->txq,
4058                                                  list) {
4059                                 /*
4060                                  * Check to see if iocb matches the nport we are
4061                                  * looking for
4062                                  */
4063                                 if ((lpfc_check_sli_ndlp(phba, pring, iocb,
4064                                                          ndlp))) {
4065                                         /* It matches, so deque and call compl
4066                                            with an error */
4067                                         list_move_tail(&iocb->list,
4068                                                        &completions);
4069                                         pring->txq_cnt--;
4070                                 }
4071                         }
4072                         spin_unlock_irq(&phba->hbalock);
4073                 }
4074         }
4075
4076         /* Cancel all the IOCBs from the completions list */
4077         lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT,
4078                               IOERR_SLI_ABORTED);
4079
4080         return 0;
4081 }
4082
4083 /*
4084  * Free rpi associated with LPFC_NODELIST entry.
4085  * This routine is called from lpfc_freenode(), when we are removing
4086  * a LPFC_NODELIST entry. It is also called if the driver initiates a
4087  * LOGO that completes successfully, and we are waiting to PLOGI back
4088  * to the remote NPort. In addition, it is called after we receive
4089  * and unsolicated ELS cmd, send back a rsp, the rsp completes and
4090  * we are waiting to PLOGI back to the remote NPort.
4091  */
4092 int
4093 lpfc_unreg_rpi(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
4094 {
4095         struct lpfc_hba *phba = vport->phba;
4096         LPFC_MBOXQ_t    *mbox;
4097         int rc;
4098
4099         if (ndlp->nlp_flag & NLP_RPI_VALID) {
4100                 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
4101                 if (mbox) {
4102                         lpfc_unreg_login(phba, vport->vpi, ndlp->nlp_rpi, mbox);
4103                         mbox->vport = vport;
4104                         mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
4105                         rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
4106                         if (rc == MBX_NOT_FINISHED)
4107                                 mempool_free(mbox, phba->mbox_mem_pool);
4108                 }
4109                 lpfc_no_rpi(phba, ndlp);
4110
4111                 ndlp->nlp_rpi = 0;
4112                 ndlp->nlp_flag &= ~NLP_RPI_VALID;
4113                 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
4114                 return 1;
4115         }
4116         return 0;
4117 }
4118
4119 /**
4120  * lpfc_unreg_hba_rpis - Unregister rpis registered to the hba.
4121  * @phba: pointer to lpfc hba data structure.
4122  *
4123  * This routine is invoked to unregister all the currently registered RPIs
4124  * to the HBA.
4125  **/
4126 void
4127 lpfc_unreg_hba_rpis(struct lpfc_hba *phba)
4128 {
4129         struct lpfc_vport **vports;
4130         struct lpfc_nodelist *ndlp;
4131         struct Scsi_Host *shost;
4132         int i;
4133
4134         vports = lpfc_create_vport_work_array(phba);
4135         if (!vports) {
4136                 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY,
4137                         "2884 Vport array allocation failed \n");
4138                 return;
4139         }
4140         for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
4141                 shost = lpfc_shost_from_vport(vports[i]);
4142                 spin_lock_irq(shost->host_lock);
4143                 list_for_each_entry(ndlp, &vports[i]->fc_nodes, nlp_listp) {
4144                         if (ndlp->nlp_flag & NLP_RPI_VALID) {
4145                                 /* The mempool_alloc might sleep */
4146                                 spin_unlock_irq(shost->host_lock);
4147                                 lpfc_unreg_rpi(vports[i], ndlp);
4148                                 spin_lock_irq(shost->host_lock);
4149                         }
4150                 }
4151                 spin_unlock_irq(shost->host_lock);
4152         }
4153         lpfc_destroy_vport_work_array(phba, vports);
4154 }
4155
4156 void
4157 lpfc_unreg_all_rpis(struct lpfc_vport *vport)
4158 {
4159         struct lpfc_hba  *phba  = vport->phba;
4160         LPFC_MBOXQ_t     *mbox;
4161         int rc;
4162
4163         if (phba->sli_rev == LPFC_SLI_REV4) {
4164                 lpfc_sli4_unreg_all_rpis(vport);
4165                 return;
4166         }
4167
4168         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
4169         if (mbox) {
4170                 lpfc_unreg_login(phba, vport->vpi, 0xffff, mbox);
4171                 mbox->vport = vport;
4172                 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
4173                 mbox->context1 = NULL;
4174                 rc = lpfc_sli_issue_mbox_wait(phba, mbox, LPFC_MBOX_TMO);
4175                 if (rc != MBX_TIMEOUT)
4176                         mempool_free(mbox, phba->mbox_mem_pool);
4177
4178                 if ((rc == MBX_TIMEOUT) || (rc == MBX_NOT_FINISHED))
4179                         lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX | LOG_VPORT,
4180                                 "1836 Could not issue "
4181                                 "unreg_login(all_rpis) status %d\n", rc);
4182         }
4183 }
4184
4185 void
4186 lpfc_unreg_default_rpis(struct lpfc_vport *vport)
4187 {
4188         struct lpfc_hba  *phba  = vport->phba;
4189         LPFC_MBOXQ_t     *mbox;
4190         int rc;
4191
4192         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
4193         if (mbox) {
4194                 lpfc_unreg_did(phba, vport->vpi, 0xffffffff, mbox);
4195                 mbox->vport = vport;
4196                 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
4197                 mbox->context1 = NULL;
4198                 rc = lpfc_sli_issue_mbox_wait(phba, mbox, LPFC_MBOX_TMO);
4199                 if (rc != MBX_TIMEOUT)
4200                         mempool_free(mbox, phba->mbox_mem_pool);
4201
4202                 if ((rc == MBX_TIMEOUT) || (rc == MBX_NOT_FINISHED))
4203                         lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX | LOG_VPORT,
4204                                          "1815 Could not issue "
4205                                          "unreg_did (default rpis) status %d\n",
4206                                          rc);
4207         }
4208 }
4209
4210 /*
4211  * Free resources associated with LPFC_NODELIST entry
4212  * so it can be freed.
4213  */
4214 static int
4215 lpfc_cleanup_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
4216 {
4217         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4218         struct lpfc_hba  *phba = vport->phba;
4219         LPFC_MBOXQ_t *mb, *nextmb;
4220         struct lpfc_dmabuf *mp;
4221
4222         /* Cleanup node for NPort <nlp_DID> */
4223         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
4224                          "0900 Cleanup node for NPort x%x "
4225                          "Data: x%x x%x x%x\n",
4226                          ndlp->nlp_DID, ndlp->nlp_flag,
4227                          ndlp->nlp_state, ndlp->nlp_rpi);
4228         if (NLP_CHK_FREE_REQ(ndlp)) {
4229                 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NODE,
4230                                 "0280 lpfc_cleanup_node: ndlp:x%p "
4231                                 "usgmap:x%x refcnt:%d\n",
4232                                 (void *)ndlp, ndlp->nlp_usg_map,
4233                                 atomic_read(&ndlp->kref.refcount));
4234                 lpfc_dequeue_node(vport, ndlp);
4235         } else {
4236                 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NODE,
4237                                 "0281 lpfc_cleanup_node: ndlp:x%p "
4238                                 "usgmap:x%x refcnt:%d\n",
4239                                 (void *)ndlp, ndlp->nlp_usg_map,
4240                                 atomic_read(&ndlp->kref.refcount));
4241                 lpfc_disable_node(vport, ndlp);
4242         }
4243
4244         /* cleanup any ndlp on mbox q waiting for reglogin cmpl */
4245         if ((mb = phba->sli.mbox_active)) {
4246                 if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) &&
4247                    (ndlp == (struct lpfc_nodelist *) mb->context2)) {
4248                         mb->context2 = NULL;
4249                         mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
4250                 }
4251         }
4252
4253         spin_lock_irq(&phba->hbalock);
4254         /* Cleanup REG_LOGIN completions which are not yet processed */
4255         list_for_each_entry(mb, &phba->sli.mboxq_cmpl, list) {
4256                 if ((mb->u.mb.mbxCommand != MBX_REG_LOGIN64) ||
4257                         (ndlp != (struct lpfc_nodelist *) mb->context2))
4258                         continue;
4259
4260                 mb->context2 = NULL;
4261                 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
4262         }
4263
4264         list_for_each_entry_safe(mb, nextmb, &phba->sli.mboxq, list) {
4265                 if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) &&
4266                     (ndlp == (struct lpfc_nodelist *) mb->context2)) {
4267                         mp = (struct lpfc_dmabuf *) (mb->context1);
4268                         if (mp) {
4269                                 __lpfc_mbuf_free(phba, mp->virt, mp->phys);
4270                                 kfree(mp);
4271                         }
4272                         list_del(&mb->list);
4273                         if (phba->sli_rev == LPFC_SLI_REV4)
4274                                 lpfc_sli4_free_rpi(phba,
4275                                          mb->u.mb.un.varRegLogin.rpi);
4276                         mempool_free(mb, phba->mbox_mem_pool);
4277                         /* We shall not invoke the lpfc_nlp_put to decrement
4278                          * the ndlp reference count as we are in the process
4279                          * of lpfc_nlp_release.
4280                          */
4281                 }
4282         }
4283         spin_unlock_irq(&phba->hbalock);
4284
4285         lpfc_els_abort(phba, ndlp);
4286
4287         spin_lock_irq(shost->host_lock);
4288         ndlp->nlp_flag &= ~NLP_DELAY_TMO;
4289         spin_unlock_irq(shost->host_lock);
4290
4291         ndlp->nlp_last_elscmd = 0;
4292         del_timer_sync(&ndlp->nlp_delayfunc);
4293
4294         list_del_init(&ndlp->els_retry_evt.evt_listp);
4295         list_del_init(&ndlp->dev_loss_evt.evt_listp);
4296
4297         lpfc_unreg_rpi(vport, ndlp);
4298
4299         return 0;
4300 }
4301
4302 /*
4303  * Check to see if we can free the nlp back to the freelist.
4304  * If we are in the middle of using the nlp in the discovery state
4305  * machine, defer the free till we reach the end of the state machine.
4306  */
4307 static void
4308 lpfc_nlp_remove(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
4309 {
4310         struct lpfc_hba  *phba = vport->phba;
4311         struct lpfc_rport_data *rdata;
4312         LPFC_MBOXQ_t *mbox;
4313         int rc;
4314
4315         lpfc_cancel_retry_delay_tmo(vport, ndlp);
4316         if ((ndlp->nlp_flag & NLP_DEFER_RM) &&
4317                 !(ndlp->nlp_flag & NLP_REG_LOGIN_SEND) &&
4318             !(ndlp->nlp_flag & NLP_RPI_VALID)) {
4319                 /* For this case we need to cleanup the default rpi
4320                  * allocated by the firmware.
4321                  */
4322                 if ((mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL))
4323                         != NULL) {
4324                         rc = lpfc_reg_rpi(phba, vport->vpi, ndlp->nlp_DID,
4325                             (uint8_t *) &vport->fc_sparam, mbox, 0);
4326                         if (rc) {
4327                                 mempool_free(mbox, phba->mbox_mem_pool);
4328                         }
4329                         else {
4330                                 mbox->mbox_flag |= LPFC_MBX_IMED_UNREG;
4331                                 mbox->mbox_cmpl = lpfc_mbx_cmpl_dflt_rpi;
4332                                 mbox->vport = vport;
4333                                 mbox->context2 = NULL;
4334                                 rc =lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
4335                                 if (rc == MBX_NOT_FINISHED) {
4336                                         mempool_free(mbox, phba->mbox_mem_pool);
4337                                 }
4338                         }
4339                 }
4340         }
4341         lpfc_cleanup_node(vport, ndlp);
4342
4343         /*
4344          * We can get here with a non-NULL ndlp->rport because when we
4345          * unregister a rport we don't break the rport/node linkage.  So if we
4346          * do, make sure we don't leaving any dangling pointers behind.
4347          */
4348         if (ndlp->rport) {
4349                 rdata = ndlp->rport->dd_data;
4350                 rdata->pnode = NULL;
4351                 ndlp->rport = NULL;
4352         }
4353 }
4354
4355 static int
4356 lpfc_matchdid(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
4357               uint32_t did)
4358 {
4359         D_ID mydid, ndlpdid, matchdid;
4360
4361         if (did == Bcast_DID)
4362                 return 0;
4363
4364         /* First check for Direct match */
4365         if (ndlp->nlp_DID == did)
4366                 return 1;
4367
4368         /* Next check for area/domain identically equals 0 match */
4369         mydid.un.word = vport->fc_myDID;
4370         if ((mydid.un.b.domain == 0) && (mydid.un.b.area == 0)) {
4371                 return 0;
4372         }
4373
4374         matchdid.un.word = did;
4375         ndlpdid.un.word = ndlp->nlp_DID;
4376         if (matchdid.un.b.id == ndlpdid.un.b.id) {
4377                 if ((mydid.un.b.domain == matchdid.un.b.domain) &&
4378                     (mydid.un.b.area == matchdid.un.b.area)) {
4379                         if ((ndlpdid.un.b.domain == 0) &&
4380                             (ndlpdid.un.b.area == 0)) {
4381                                 if (ndlpdid.un.b.id)
4382                                         return 1;
4383                         }
4384                         return 0;
4385                 }
4386
4387                 matchdid.un.word = ndlp->nlp_DID;
4388                 if ((mydid.un.b.domain == ndlpdid.un.b.domain) &&
4389                     (mydid.un.b.area == ndlpdid.un.b.area)) {
4390                         if ((matchdid.un.b.domain == 0) &&
4391                             (matchdid.un.b.area == 0)) {
4392                                 if (matchdid.un.b.id)
4393                                         return 1;
4394                         }
4395                 }
4396         }
4397         return 0;
4398 }
4399
4400 /* Search for a nodelist entry */
4401 static struct lpfc_nodelist *
4402 __lpfc_findnode_did(struct lpfc_vport *vport, uint32_t did)
4403 {
4404         struct lpfc_nodelist *ndlp;
4405         uint32_t data1;
4406
4407         list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
4408                 if (lpfc_matchdid(vport, ndlp, did)) {
4409                         data1 = (((uint32_t) ndlp->nlp_state << 24) |
4410                                  ((uint32_t) ndlp->nlp_xri << 16) |
4411                                  ((uint32_t) ndlp->nlp_type << 8) |
4412                                  ((uint32_t) ndlp->nlp_rpi & 0xff));
4413                         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
4414                                          "0929 FIND node DID "
4415                                          "Data: x%p x%x x%x x%x\n",
4416                                          ndlp, ndlp->nlp_DID,
4417                                          ndlp->nlp_flag, data1);
4418                         return ndlp;
4419                 }
4420         }
4421
4422         /* FIND node did <did> NOT FOUND */
4423         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
4424                          "0932 FIND node did x%x NOT FOUND.\n", did);
4425         return NULL;
4426 }
4427
4428 struct lpfc_nodelist *
4429 lpfc_findnode_did(struct lpfc_vport *vport, uint32_t did)
4430 {
4431         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4432         struct lpfc_nodelist *ndlp;
4433
4434         spin_lock_irq(shost->host_lock);
4435         ndlp = __lpfc_findnode_did(vport, did);
4436         spin_unlock_irq(shost->host_lock);
4437         return ndlp;
4438 }
4439
4440 struct lpfc_nodelist *
4441 lpfc_setup_disc_node(struct lpfc_vport *vport, uint32_t did)
4442 {
4443         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4444         struct lpfc_nodelist *ndlp;
4445
4446         ndlp = lpfc_findnode_did(vport, did);
4447         if (!ndlp) {
4448                 if ((vport->fc_flag & FC_RSCN_MODE) != 0 &&
4449                     lpfc_rscn_payload_check(vport, did) == 0)
4450                         return NULL;
4451                 ndlp = (struct lpfc_nodelist *)
4452                      mempool_alloc(vport->phba->nlp_mem_pool, GFP_KERNEL);
4453                 if (!ndlp)
4454                         return NULL;
4455                 lpfc_nlp_init(vport, ndlp, did);
4456                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
4457                 spin_lock_irq(shost->host_lock);
4458                 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
4459                 spin_unlock_irq(shost->host_lock);
4460                 return ndlp;
4461         } else if (!NLP_CHK_NODE_ACT(ndlp)) {
4462                 ndlp = lpfc_enable_node(vport, ndlp, NLP_STE_NPR_NODE);
4463                 if (!ndlp)
4464                         return NULL;
4465                 spin_lock_irq(shost->host_lock);
4466                 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
4467                 spin_unlock_irq(shost->host_lock);
4468                 return ndlp;
4469         }
4470
4471         if ((vport->fc_flag & FC_RSCN_MODE) &&
4472             !(vport->fc_flag & FC_NDISC_ACTIVE)) {
4473                 if (lpfc_rscn_payload_check(vport, did)) {
4474                         /* If we've already recieved a PLOGI from this NPort
4475                          * we don't need to try to discover it again.
4476                          */
4477                         if (ndlp->nlp_flag & NLP_RCV_PLOGI)
4478                                 return NULL;
4479
4480                         /* Since this node is marked for discovery,
4481                          * delay timeout is not needed.
4482                          */
4483                         lpfc_cancel_retry_delay_tmo(vport, ndlp);
4484                         spin_lock_irq(shost->host_lock);
4485                         ndlp->nlp_flag |= NLP_NPR_2B_DISC;
4486                         spin_unlock_irq(shost->host_lock);
4487                 } else
4488                         ndlp = NULL;
4489         } else {
4490                 /* If we've already recieved a PLOGI from this NPort,
4491                  * or we are already in the process of discovery on it,
4492                  * we don't need to try to discover it again.
4493                  */
4494                 if (ndlp->nlp_state == NLP_STE_ADISC_ISSUE ||
4495                     ndlp->nlp_state == NLP_STE_PLOGI_ISSUE ||
4496                     ndlp->nlp_flag & NLP_RCV_PLOGI)
4497                         return NULL;
4498                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
4499                 spin_lock_irq(shost->host_lock);
4500                 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
4501                 spin_unlock_irq(shost->host_lock);
4502         }
4503         return ndlp;
4504 }
4505
4506 /* Build a list of nodes to discover based on the loopmap */
4507 void
4508 lpfc_disc_list_loopmap(struct lpfc_vport *vport)
4509 {
4510         struct lpfc_hba  *phba = vport->phba;
4511         int j;
4512         uint32_t alpa, index;
4513
4514         if (!lpfc_is_link_up(phba))
4515                 return;
4516
4517         if (phba->fc_topology != LPFC_TOPOLOGY_LOOP)
4518                 return;
4519
4520         /* Check for loop map present or not */
4521         if (phba->alpa_map[0]) {
4522                 for (j = 1; j <= phba->alpa_map[0]; j++) {
4523                         alpa = phba->alpa_map[j];
4524                         if (((vport->fc_myDID & 0xff) == alpa) || (alpa == 0))
4525                                 continue;
4526                         lpfc_setup_disc_node(vport, alpa);
4527                 }
4528         } else {
4529                 /* No alpamap, so try all alpa's */
4530                 for (j = 0; j < FC_MAXLOOP; j++) {
4531                         /* If cfg_scan_down is set, start from highest
4532                          * ALPA (0xef) to lowest (0x1).
4533                          */
4534                         if (vport->cfg_scan_down)
4535                                 index = j;
4536                         else
4537                                 index = FC_MAXLOOP - j - 1;
4538                         alpa = lpfcAlpaArray[index];
4539                         if ((vport->fc_myDID & 0xff) == alpa)
4540                                 continue;
4541                         lpfc_setup_disc_node(vport, alpa);
4542                 }
4543         }
4544         return;
4545 }
4546
4547 void
4548 lpfc_issue_clear_la(struct lpfc_hba *phba, struct lpfc_vport *vport)
4549 {
4550         LPFC_MBOXQ_t *mbox;
4551         struct lpfc_sli *psli = &phba->sli;
4552         struct lpfc_sli_ring *extra_ring = &psli->ring[psli->extra_ring];
4553         struct lpfc_sli_ring *fcp_ring   = &psli->ring[psli->fcp_ring];
4554         struct lpfc_sli_ring *next_ring  = &psli->ring[psli->next_ring];
4555         int  rc;
4556
4557         /*
4558          * if it's not a physical port or if we already send
4559          * clear_la then don't send it.
4560          */
4561         if ((phba->link_state >= LPFC_CLEAR_LA) ||
4562             (vport->port_type != LPFC_PHYSICAL_PORT) ||
4563                 (phba->sli_rev == LPFC_SLI_REV4))
4564                 return;
4565
4566                         /* Link up discovery */
4567         if ((mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL)) != NULL) {
4568                 phba->link_state = LPFC_CLEAR_LA;
4569                 lpfc_clear_la(phba, mbox);
4570                 mbox->mbox_cmpl = lpfc_mbx_cmpl_clear_la;
4571                 mbox->vport = vport;
4572                 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
4573                 if (rc == MBX_NOT_FINISHED) {
4574                         mempool_free(mbox, phba->mbox_mem_pool);
4575                         lpfc_disc_flush_list(vport);
4576                         extra_ring->flag &= ~LPFC_STOP_IOCB_EVENT;
4577                         fcp_ring->flag &= ~LPFC_STOP_IOCB_EVENT;
4578                         next_ring->flag &= ~LPFC_STOP_IOCB_EVENT;
4579                         phba->link_state = LPFC_HBA_ERROR;
4580                 }
4581         }
4582 }
4583
4584 /* Reg_vpi to tell firmware to resume normal operations */
4585 void
4586 lpfc_issue_reg_vpi(struct lpfc_hba *phba, struct lpfc_vport *vport)
4587 {
4588         LPFC_MBOXQ_t *regvpimbox;
4589
4590         regvpimbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
4591         if (regvpimbox) {
4592                 lpfc_reg_vpi(vport, regvpimbox);
4593                 regvpimbox->mbox_cmpl = lpfc_mbx_cmpl_reg_vpi;
4594                 regvpimbox->vport = vport;
4595                 if (lpfc_sli_issue_mbox(phba, regvpimbox, MBX_NOWAIT)
4596                                         == MBX_NOT_FINISHED) {
4597                         mempool_free(regvpimbox, phba->mbox_mem_pool);
4598                 }
4599         }
4600 }
4601
4602 /* Start Link up / RSCN discovery on NPR nodes */
4603 void
4604 lpfc_disc_start(struct lpfc_vport *vport)
4605 {
4606         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4607         struct lpfc_hba  *phba = vport->phba;
4608         uint32_t num_sent;
4609         uint32_t clear_la_pending;
4610         int did_changed;
4611
4612         if (!lpfc_is_link_up(phba))
4613                 return;
4614
4615         if (phba->link_state == LPFC_CLEAR_LA)
4616                 clear_la_pending = 1;
4617         else
4618                 clear_la_pending = 0;
4619
4620         if (vport->port_state < LPFC_VPORT_READY)
4621                 vport->port_state = LPFC_DISC_AUTH;
4622
4623         lpfc_set_disctmo(vport);
4624
4625         if (vport->fc_prevDID == vport->fc_myDID)
4626                 did_changed = 0;
4627         else
4628                 did_changed = 1;
4629
4630         vport->fc_prevDID = vport->fc_myDID;
4631         vport->num_disc_nodes = 0;
4632
4633         /* Start Discovery state <hba_state> */
4634         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
4635                          "0202 Start Discovery hba state x%x "
4636                          "Data: x%x x%x x%x\n",
4637                          vport->port_state, vport->fc_flag, vport->fc_plogi_cnt,
4638                          vport->fc_adisc_cnt);
4639
4640         /* First do ADISCs - if any */
4641         num_sent = lpfc_els_disc_adisc(vport);
4642
4643         if (num_sent)
4644                 return;
4645
4646         /*
4647          * For SLI3, cmpl_reg_vpi will set port_state to READY, and
4648          * continue discovery.
4649          */
4650         if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
4651             !(vport->fc_flag & FC_PT2PT) &&
4652             !(vport->fc_flag & FC_RSCN_MODE) &&
4653             (phba->sli_rev < LPFC_SLI_REV4)) {
4654                 lpfc_issue_reg_vpi(phba, vport);
4655                 return;
4656         }
4657
4658         /*
4659          * For SLI2, we need to set port_state to READY and continue
4660          * discovery.
4661          */
4662         if (vport->port_state < LPFC_VPORT_READY && !clear_la_pending) {
4663                 /* If we get here, there is nothing to ADISC */
4664                 if (vport->port_type == LPFC_PHYSICAL_PORT)
4665                         lpfc_issue_clear_la(phba, vport);
4666
4667                 if (!(vport->fc_flag & FC_ABORT_DISCOVERY)) {
4668                         vport->num_disc_nodes = 0;
4669                         /* go thru NPR nodes and issue ELS PLOGIs */
4670                         if (vport->fc_npr_cnt)
4671                                 lpfc_els_disc_plogi(vport);
4672
4673                         if (!vport->num_disc_nodes) {
4674                                 spin_lock_irq(shost->host_lock);
4675                                 vport->fc_flag &= ~FC_NDISC_ACTIVE;
4676                                 spin_unlock_irq(shost->host_lock);
4677                                 lpfc_can_disctmo(vport);
4678                         }
4679                 }
4680                 vport->port_state = LPFC_VPORT_READY;
4681         } else {
4682                 /* Next do PLOGIs - if any */
4683                 num_sent = lpfc_els_disc_plogi(vport);
4684
4685                 if (num_sent)
4686                         return;
4687
4688                 if (vport->fc_flag & FC_RSCN_MODE) {
4689                         /* Check to see if more RSCNs came in while we
4690                          * were processing this one.
4691                          */
4692                         if ((vport->fc_rscn_id_cnt == 0) &&
4693                             (!(vport->fc_flag & FC_RSCN_DISCOVERY))) {
4694                                 spin_lock_irq(shost->host_lock);
4695                                 vport->fc_flag &= ~FC_RSCN_MODE;
4696                                 spin_unlock_irq(shost->host_lock);
4697                                 lpfc_can_disctmo(vport);
4698                         } else
4699                                 lpfc_els_handle_rscn(vport);
4700                 }
4701         }
4702         return;
4703 }
4704
4705 /*
4706  *  Ignore completion for all IOCBs on tx and txcmpl queue for ELS
4707  *  ring the match the sppecified nodelist.
4708  */
4709 static void
4710 lpfc_free_tx(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
4711 {
4712         LIST_HEAD(completions);
4713         struct lpfc_sli *psli;
4714         IOCB_t     *icmd;
4715         struct lpfc_iocbq    *iocb, *next_iocb;
4716         struct lpfc_sli_ring *pring;
4717
4718         psli = &phba->sli;
4719         pring = &psli->ring[LPFC_ELS_RING];
4720
4721         /* Error matching iocb on txq or txcmplq
4722          * First check the txq.
4723          */
4724         spin_lock_irq(&phba->hbalock);
4725         list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) {
4726                 if (iocb->context1 != ndlp) {
4727                         continue;
4728                 }
4729                 icmd = &iocb->iocb;
4730                 if ((icmd->ulpCommand == CMD_ELS_REQUEST64_CR) ||
4731                     (icmd->ulpCommand == CMD_XMIT_ELS_RSP64_CX)) {
4732
4733                         list_move_tail(&iocb->list, &completions);
4734                         pring->txq_cnt--;
4735                 }
4736         }
4737
4738         /* Next check the txcmplq */
4739         list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq, list) {
4740                 if (iocb->context1 != ndlp) {
4741                         continue;
4742                 }
4743                 icmd = &iocb->iocb;
4744                 if (icmd->ulpCommand == CMD_ELS_REQUEST64_CR ||
4745                     icmd->ulpCommand == CMD_XMIT_ELS_RSP64_CX) {
4746                         lpfc_sli_issue_abort_iotag(phba, pring, iocb);
4747                 }
4748         }
4749         spin_unlock_irq(&phba->hbalock);
4750
4751         /* Cancel all the IOCBs from the completions list */
4752         lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT,
4753                               IOERR_SLI_ABORTED);
4754 }
4755
4756 static void
4757 lpfc_disc_flush_list(struct lpfc_vport *vport)
4758 {
4759         struct lpfc_nodelist *ndlp, *next_ndlp;
4760         struct lpfc_hba *phba = vport->phba;
4761
4762         if (vport->fc_plogi_cnt || vport->fc_adisc_cnt) {
4763                 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes,
4764                                          nlp_listp) {
4765                         if (!NLP_CHK_NODE_ACT(ndlp))
4766                                 continue;
4767                         if (ndlp->nlp_state == NLP_STE_PLOGI_ISSUE ||
4768                             ndlp->nlp_state == NLP_STE_ADISC_ISSUE) {
4769                                 lpfc_free_tx(phba, ndlp);
4770                         }
4771                 }
4772         }
4773 }
4774
4775 void
4776 lpfc_cleanup_discovery_resources(struct lpfc_vport *vport)
4777 {
4778         lpfc_els_flush_rscn(vport);
4779         lpfc_els_flush_cmd(vport);
4780         lpfc_disc_flush_list(vport);
4781 }
4782
4783 /*****************************************************************************/
4784 /*
4785  * NAME:     lpfc_disc_timeout
4786  *
4787  * FUNCTION: Fibre Channel driver discovery timeout routine.
4788  *
4789  * EXECUTION ENVIRONMENT: interrupt only
4790  *
4791  * CALLED FROM:
4792  *      Timer function
4793  *
4794  * RETURNS:
4795  *      none
4796  */
4797 /*****************************************************************************/
4798 void
4799 lpfc_disc_timeout(unsigned long ptr)
4800 {
4801         struct lpfc_vport *vport = (struct lpfc_vport *) ptr;
4802         struct lpfc_hba   *phba = vport->phba;
4803         uint32_t tmo_posted;
4804         unsigned long flags = 0;
4805
4806         if (unlikely(!phba))
4807                 return;
4808
4809         spin_lock_irqsave(&vport->work_port_lock, flags);
4810         tmo_posted = vport->work_port_events & WORKER_DISC_TMO;
4811         if (!tmo_posted)
4812                 vport->work_port_events |= WORKER_DISC_TMO;
4813         spin_unlock_irqrestore(&vport->work_port_lock, flags);
4814
4815         if (!tmo_posted)
4816                 lpfc_worker_wake_up(phba);
4817         return;
4818 }
4819
4820 static void
4821 lpfc_disc_timeout_handler(struct lpfc_vport *vport)
4822 {
4823         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4824         struct lpfc_hba  *phba = vport->phba;
4825         struct lpfc_sli  *psli = &phba->sli;
4826         struct lpfc_nodelist *ndlp, *next_ndlp;
4827         LPFC_MBOXQ_t *initlinkmbox;
4828         int rc, clrlaerr = 0;
4829
4830         if (!(vport->fc_flag & FC_DISC_TMO))
4831                 return;
4832
4833         spin_lock_irq(shost->host_lock);
4834         vport->fc_flag &= ~FC_DISC_TMO;
4835         spin_unlock_irq(shost->host_lock);
4836
4837         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
4838                 "disc timeout:    state:x%x rtry:x%x flg:x%x",
4839                 vport->port_state, vport->fc_ns_retry, vport->fc_flag);
4840
4841         switch (vport->port_state) {
4842
4843         case LPFC_LOCAL_CFG_LINK:
4844         /* port_state is identically  LPFC_LOCAL_CFG_LINK while waiting for
4845          * FAN
4846          */
4847                                 /* FAN timeout */
4848                 lpfc_printf_vlog(vport, KERN_WARNING, LOG_DISCOVERY,
4849                                  "0221 FAN timeout\n");
4850                 /* Start discovery by sending FLOGI, clean up old rpis */
4851                 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes,
4852                                          nlp_listp) {
4853                         if (!NLP_CHK_NODE_ACT(ndlp))
4854                                 continue;
4855                         if (ndlp->nlp_state != NLP_STE_NPR_NODE)
4856                                 continue;
4857                         if (ndlp->nlp_type & NLP_FABRIC) {
4858                                 /* Clean up the ndlp on Fabric connections */
4859                                 lpfc_drop_node(vport, ndlp);
4860
4861                         } else if (!(ndlp->nlp_flag & NLP_NPR_ADISC)) {
4862                                 /* Fail outstanding IO now since device
4863                                  * is marked for PLOGI.
4864                                  */
4865                                 lpfc_unreg_rpi(vport, ndlp);
4866                         }
4867                 }
4868                 if (vport->port_state != LPFC_FLOGI) {
4869                         if (phba->sli_rev <= LPFC_SLI_REV3)
4870                                 lpfc_initial_flogi(vport);
4871                         else
4872                                 lpfc_issue_init_vfi(vport);
4873                         return;
4874                 }
4875                 break;
4876
4877         case LPFC_FDISC:
4878         case LPFC_FLOGI:
4879         /* port_state is identically LPFC_FLOGI while waiting for FLOGI cmpl */
4880                 /* Initial FLOGI timeout */
4881                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
4882                                  "0222 Initial %s timeout\n",
4883                                  vport->vpi ? "FDISC" : "FLOGI");
4884
4885                 /* Assume no Fabric and go on with discovery.
4886                  * Check for outstanding ELS FLOGI to abort.
4887                  */
4888
4889                 /* FLOGI failed, so just use loop map to make discovery list */
4890                 lpfc_disc_list_loopmap(vport);
4891
4892                 /* Start discovery */
4893                 lpfc_disc_start(vport);
4894                 break;
4895
4896         case LPFC_FABRIC_CFG_LINK:
4897         /* hba_state is identically LPFC_FABRIC_CFG_LINK while waiting for
4898            NameServer login */
4899                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
4900                                  "0223 Timeout while waiting for "
4901                                  "NameServer login\n");
4902                 /* Next look for NameServer ndlp */
4903                 ndlp = lpfc_findnode_did(vport, NameServer_DID);
4904                 if (ndlp && NLP_CHK_NODE_ACT(ndlp))
4905                         lpfc_els_abort(phba, ndlp);
4906
4907                 /* ReStart discovery */
4908                 goto restart_disc;
4909
4910         case LPFC_NS_QRY:
4911         /* Check for wait for NameServer Rsp timeout */
4912                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
4913                                  "0224 NameServer Query timeout "
4914                                  "Data: x%x x%x\n",
4915                                  vport->fc_ns_retry, LPFC_MAX_NS_RETRY);
4916
4917                 if (vport->fc_ns_retry < LPFC_MAX_NS_RETRY) {
4918                         /* Try it one more time */
4919                         vport->fc_ns_retry++;
4920                         rc = lpfc_ns_cmd(vport, SLI_CTNS_GID_FT,
4921                                          vport->fc_ns_retry, 0);
4922                         if (rc == 0)
4923                                 break;
4924                 }
4925                 vport->fc_ns_retry = 0;
4926
4927 restart_disc:
4928                 /*
4929                  * Discovery is over.
4930                  * set port_state to PORT_READY if SLI2.
4931                  * cmpl_reg_vpi will set port_state to READY for SLI3.
4932                  */
4933                 if (phba->sli_rev < LPFC_SLI_REV4) {
4934                         if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)
4935                                 lpfc_issue_reg_vpi(phba, vport);
4936                         else  { /* NPIV Not enabled */
4937                                 lpfc_issue_clear_la(phba, vport);
4938                                 vport->port_state = LPFC_VPORT_READY;
4939                         }
4940                 }
4941
4942                 /* Setup and issue mailbox INITIALIZE LINK command */
4943                 initlinkmbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
4944                 if (!initlinkmbox) {
4945                         lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
4946                                          "0206 Device Discovery "
4947                                          "completion error\n");
4948                         phba->link_state = LPFC_HBA_ERROR;
4949                         break;
4950                 }
4951
4952                 lpfc_linkdown(phba);
4953                 lpfc_init_link(phba, initlinkmbox, phba->cfg_topology,
4954                                phba->cfg_link_speed);
4955                 initlinkmbox->u.mb.un.varInitLnk.lipsr_AL_PA = 0;
4956                 initlinkmbox->vport = vport;
4957                 initlinkmbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
4958                 rc = lpfc_sli_issue_mbox(phba, initlinkmbox, MBX_NOWAIT);
4959                 lpfc_set_loopback_flag(phba);
4960                 if (rc == MBX_NOT_FINISHED)
4961                         mempool_free(initlinkmbox, phba->mbox_mem_pool);
4962
4963                 break;
4964
4965         case LPFC_DISC_AUTH:
4966         /* Node Authentication timeout */
4967                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
4968                                  "0227 Node Authentication timeout\n");
4969                 lpfc_disc_flush_list(vport);
4970
4971                 /*
4972                  * set port_state to PORT_READY if SLI2.
4973                  * cmpl_reg_vpi will set port_state to READY for SLI3.
4974                  */
4975                 if (phba->sli_rev < LPFC_SLI_REV4) {
4976                         if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)
4977                                 lpfc_issue_reg_vpi(phba, vport);
4978                         else  { /* NPIV Not enabled */
4979                                 lpfc_issue_clear_la(phba, vport);
4980                                 vport->port_state = LPFC_VPORT_READY;
4981                         }
4982                 }
4983                 break;
4984
4985         case LPFC_VPORT_READY:
4986                 if (vport->fc_flag & FC_RSCN_MODE) {
4987                         lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
4988                                          "0231 RSCN timeout Data: x%x "
4989                                          "x%x\n",
4990                                          vport->fc_ns_retry, LPFC_MAX_NS_RETRY);
4991
4992                         /* Cleanup any outstanding ELS commands */
4993                         lpfc_els_flush_cmd(vport);
4994
4995                         lpfc_els_flush_rscn(vport);
4996                         lpfc_disc_flush_list(vport);
4997                 }
4998                 break;
4999
5000         default:
5001                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
5002                                  "0273 Unexpected discovery timeout, "
5003                                  "vport State x%x\n", vport->port_state);
5004                 break;
5005         }
5006
5007         switch (phba->link_state) {
5008         case LPFC_CLEAR_LA:
5009                                 /* CLEAR LA timeout */
5010                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
5011                                  "0228 CLEAR LA timeout\n");
5012                 clrlaerr = 1;
5013                 break;
5014
5015         case LPFC_LINK_UP:
5016                 lpfc_issue_clear_la(phba, vport);
5017                 /* Drop thru */
5018         case LPFC_LINK_UNKNOWN:
5019         case LPFC_WARM_START:
5020         case LPFC_INIT_START:
5021         case LPFC_INIT_MBX_CMDS:
5022         case LPFC_LINK_DOWN:
5023         case LPFC_HBA_ERROR:
5024                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
5025                                  "0230 Unexpected timeout, hba link "
5026                                  "state x%x\n", phba->link_state);
5027                 clrlaerr = 1;
5028                 break;
5029
5030         case LPFC_HBA_READY:
5031                 break;
5032         }
5033
5034         if (clrlaerr) {
5035                 lpfc_disc_flush_list(vport);
5036                 psli->ring[(psli->extra_ring)].flag &= ~LPFC_STOP_IOCB_EVENT;
5037                 psli->ring[(psli->fcp_ring)].flag &= ~LPFC_STOP_IOCB_EVENT;
5038                 psli->ring[(psli->next_ring)].flag &= ~LPFC_STOP_IOCB_EVENT;
5039                 vport->port_state = LPFC_VPORT_READY;
5040         }
5041
5042         return;
5043 }
5044
5045 /*
5046  * This routine handles processing a NameServer REG_LOGIN mailbox
5047  * command upon completion. It is setup in the LPFC_MBOXQ
5048  * as the completion routine when the command is
5049  * handed off to the SLI layer.
5050  */
5051 void
5052 lpfc_mbx_cmpl_fdmi_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
5053 {
5054         MAILBOX_t *mb = &pmb->u.mb;
5055         struct lpfc_dmabuf   *mp = (struct lpfc_dmabuf *) (pmb->context1);
5056         struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) pmb->context2;
5057         struct lpfc_vport    *vport = pmb->vport;
5058
5059         pmb->context1 = NULL;
5060         pmb->context2 = NULL;
5061
5062         ndlp->nlp_rpi = mb->un.varWords[0];
5063         ndlp->nlp_flag |= NLP_RPI_VALID;
5064         ndlp->nlp_type |= NLP_FABRIC;
5065         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
5066
5067         /*
5068          * Start issuing Fabric-Device Management Interface (FDMI) command to
5069          * 0xfffffa (FDMI well known port) or Delay issuing FDMI command if
5070          * fdmi-on=2 (supporting RPA/hostnmae)
5071          */
5072
5073         if (vport->cfg_fdmi_on == 1)
5074                 lpfc_fdmi_cmd(vport, ndlp, SLI_MGMT_DHBA);
5075         else
5076                 mod_timer(&vport->fc_fdmitmo, jiffies + HZ * 60);
5077
5078         /* decrement the node reference count held for this callback
5079          * function.
5080          */
5081         lpfc_nlp_put(ndlp);
5082         lpfc_mbuf_free(phba, mp->virt, mp->phys);
5083         kfree(mp);
5084         mempool_free(pmb, phba->mbox_mem_pool);
5085
5086         return;
5087 }
5088
5089 static int
5090 lpfc_filter_by_rpi(struct lpfc_nodelist *ndlp, void *param)
5091 {
5092         uint16_t *rpi = param;
5093
5094         return ndlp->nlp_rpi == *rpi;
5095 }
5096
5097 static int
5098 lpfc_filter_by_wwpn(struct lpfc_nodelist *ndlp, void *param)
5099 {
5100         return memcmp(&ndlp->nlp_portname, param,
5101                       sizeof(ndlp->nlp_portname)) == 0;
5102 }
5103
5104 static struct lpfc_nodelist *
5105 __lpfc_find_node(struct lpfc_vport *vport, node_filter filter, void *param)
5106 {
5107         struct lpfc_nodelist *ndlp;
5108
5109         list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
5110                 if (filter(ndlp, param))
5111                         return ndlp;
5112         }
5113         return NULL;
5114 }
5115
5116 /*
5117  * This routine looks up the ndlp lists for the given RPI. If rpi found it
5118  * returns the node list element pointer else return NULL.
5119  */
5120 struct lpfc_nodelist *
5121 __lpfc_findnode_rpi(struct lpfc_vport *vport, uint16_t rpi)
5122 {
5123         return __lpfc_find_node(vport, lpfc_filter_by_rpi, &rpi);
5124 }
5125
5126 /*
5127  * This routine looks up the ndlp lists for the given WWPN. If WWPN found it
5128  * returns the node element list pointer else return NULL.
5129  */
5130 struct lpfc_nodelist *
5131 lpfc_findnode_wwpn(struct lpfc_vport *vport, struct lpfc_name *wwpn)
5132 {
5133         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
5134         struct lpfc_nodelist *ndlp;
5135
5136         spin_lock_irq(shost->host_lock);
5137         ndlp = __lpfc_find_node(vport, lpfc_filter_by_wwpn, wwpn);
5138         spin_unlock_irq(shost->host_lock);
5139         return ndlp;
5140 }
5141
5142 void
5143 lpfc_nlp_init(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
5144               uint32_t did)
5145 {
5146         memset(ndlp, 0, sizeof (struct lpfc_nodelist));
5147
5148         lpfc_initialize_node(vport, ndlp, did);
5149         INIT_LIST_HEAD(&ndlp->nlp_listp);
5150
5151         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE,
5152                 "node init:       did:x%x",
5153                 ndlp->nlp_DID, 0, 0);
5154
5155         return;
5156 }
5157
5158 /* This routine releases all resources associated with a specifc NPort's ndlp
5159  * and mempool_free's the nodelist.
5160  */
5161 static void
5162 lpfc_nlp_release(struct kref *kref)
5163 {
5164         struct lpfc_hba *phba;
5165         unsigned long flags;
5166         struct lpfc_nodelist *ndlp = container_of(kref, struct lpfc_nodelist,
5167                                                   kref);
5168
5169         lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
5170                 "node release:    did:x%x flg:x%x type:x%x",
5171                 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type);
5172
5173         lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_NODE,
5174                         "0279 lpfc_nlp_release: ndlp:x%p "
5175                         "usgmap:x%x refcnt:%d\n",
5176                         (void *)ndlp, ndlp->nlp_usg_map,
5177                         atomic_read(&ndlp->kref.refcount));
5178
5179         /* remove ndlp from action. */
5180         lpfc_nlp_remove(ndlp->vport, ndlp);
5181
5182         /* clear the ndlp active flag for all release cases */
5183         phba = ndlp->phba;
5184         spin_lock_irqsave(&phba->ndlp_lock, flags);
5185         NLP_CLR_NODE_ACT(ndlp);
5186         spin_unlock_irqrestore(&phba->ndlp_lock, flags);
5187
5188         /* free ndlp memory for final ndlp release */
5189         if (NLP_CHK_FREE_REQ(ndlp)) {
5190                 kfree(ndlp->lat_data);
5191                 mempool_free(ndlp, ndlp->phba->nlp_mem_pool);
5192         }
5193 }
5194
5195 /* This routine bumps the reference count for a ndlp structure to ensure
5196  * that one discovery thread won't free a ndlp while another discovery thread
5197  * is using it.
5198  */
5199 struct lpfc_nodelist *
5200 lpfc_nlp_get(struct lpfc_nodelist *ndlp)
5201 {
5202         struct lpfc_hba *phba;
5203         unsigned long flags;
5204
5205         if (ndlp) {
5206                 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
5207                         "node get:        did:x%x flg:x%x refcnt:x%x",
5208                         ndlp->nlp_DID, ndlp->nlp_flag,
5209                         atomic_read(&ndlp->kref.refcount));
5210                 /* The check of ndlp usage to prevent incrementing the
5211                  * ndlp reference count that is in the process of being
5212                  * released.
5213                  */
5214                 phba = ndlp->phba;
5215                 spin_lock_irqsave(&phba->ndlp_lock, flags);
5216                 if (!NLP_CHK_NODE_ACT(ndlp) || NLP_CHK_FREE_ACK(ndlp)) {
5217                         spin_unlock_irqrestore(&phba->ndlp_lock, flags);
5218                         lpfc_printf_vlog(ndlp->vport, KERN_WARNING, LOG_NODE,
5219                                 "0276 lpfc_nlp_get: ndlp:x%p "
5220                                 "usgmap:x%x refcnt:%d\n",
5221                                 (void *)ndlp, ndlp->nlp_usg_map,
5222                                 atomic_read(&ndlp->kref.refcount));
5223                         return NULL;
5224                 } else
5225                         kref_get(&ndlp->kref);
5226                 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
5227         }
5228         return ndlp;
5229 }
5230
5231 /* This routine decrements the reference count for a ndlp structure. If the
5232  * count goes to 0, this indicates the the associated nodelist should be
5233  * freed. Returning 1 indicates the ndlp resource has been released; on the
5234  * other hand, returning 0 indicates the ndlp resource has not been released
5235  * yet.
5236  */
5237 int
5238 lpfc_nlp_put(struct lpfc_nodelist *ndlp)
5239 {
5240         struct lpfc_hba *phba;
5241         unsigned long flags;
5242
5243         if (!ndlp)
5244                 return 1;
5245
5246         lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
5247         "node put:        did:x%x flg:x%x refcnt:x%x",
5248                 ndlp->nlp_DID, ndlp->nlp_flag,
5249                 atomic_read(&ndlp->kref.refcount));
5250         phba = ndlp->phba;
5251         spin_lock_irqsave(&phba->ndlp_lock, flags);
5252         /* Check the ndlp memory free acknowledge flag to avoid the
5253          * possible race condition that kref_put got invoked again
5254          * after previous one has done ndlp memory free.
5255          */
5256         if (NLP_CHK_FREE_ACK(ndlp)) {
5257                 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
5258                 lpfc_printf_vlog(ndlp->vport, KERN_WARNING, LOG_NODE,
5259                                 "0274 lpfc_nlp_put: ndlp:x%p "
5260                                 "usgmap:x%x refcnt:%d\n",
5261                                 (void *)ndlp, ndlp->nlp_usg_map,
5262                                 atomic_read(&ndlp->kref.refcount));
5263                 return 1;
5264         }
5265         /* Check the ndlp inactivate log flag to avoid the possible
5266          * race condition that kref_put got invoked again after ndlp
5267          * is already in inactivating state.
5268          */
5269         if (NLP_CHK_IACT_REQ(ndlp)) {
5270                 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
5271                 lpfc_printf_vlog(ndlp->vport, KERN_WARNING, LOG_NODE,
5272                                 "0275 lpfc_nlp_put: ndlp:x%p "
5273                                 "usgmap:x%x refcnt:%d\n",
5274                                 (void *)ndlp, ndlp->nlp_usg_map,
5275                                 atomic_read(&ndlp->kref.refcount));
5276                 return 1;
5277         }
5278         /* For last put, mark the ndlp usage flags to make sure no
5279          * other kref_get and kref_put on the same ndlp shall get
5280          * in between the process when the final kref_put has been
5281          * invoked on this ndlp.
5282          */
5283         if (atomic_read(&ndlp->kref.refcount) == 1) {
5284                 /* Indicate ndlp is put to inactive state. */
5285                 NLP_SET_IACT_REQ(ndlp);
5286                 /* Acknowledge ndlp memory free has been seen. */
5287                 if (NLP_CHK_FREE_REQ(ndlp))
5288                         NLP_SET_FREE_ACK(ndlp);
5289         }
5290         spin_unlock_irqrestore(&phba->ndlp_lock, flags);
5291         /* Note, the kref_put returns 1 when decrementing a reference
5292          * count that was 1, it invokes the release callback function,
5293          * but it still left the reference count as 1 (not actually
5294          * performs the last decrementation). Otherwise, it actually
5295          * decrements the reference count and returns 0.
5296          */
5297         return kref_put(&ndlp->kref, lpfc_nlp_release);
5298 }
5299
5300 /* This routine free's the specified nodelist if it is not in use
5301  * by any other discovery thread. This routine returns 1 if the
5302  * ndlp has been freed. A return value of 0 indicates the ndlp is
5303  * not yet been released.
5304  */
5305 int
5306 lpfc_nlp_not_used(struct lpfc_nodelist *ndlp)
5307 {
5308         lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
5309                 "node not used:   did:x%x flg:x%x refcnt:x%x",
5310                 ndlp->nlp_DID, ndlp->nlp_flag,
5311                 atomic_read(&ndlp->kref.refcount));
5312         if (atomic_read(&ndlp->kref.refcount) == 1)
5313                 if (lpfc_nlp_put(ndlp))
5314                         return 1;
5315         return 0;
5316 }
5317
5318 /**
5319  * lpfc_fcf_inuse - Check if FCF can be unregistered.
5320  * @phba: Pointer to hba context object.
5321  *
5322  * This function iterate through all FC nodes associated
5323  * will all vports to check if there is any node with
5324  * fc_rports associated with it. If there is an fc_rport
5325  * associated with the node, then the node is either in
5326  * discovered state or its devloss_timer is pending.
5327  */
5328 static int
5329 lpfc_fcf_inuse(struct lpfc_hba *phba)
5330 {
5331         struct lpfc_vport **vports;
5332         int i, ret = 0;
5333         struct lpfc_nodelist *ndlp;
5334         struct Scsi_Host  *shost;
5335
5336         vports = lpfc_create_vport_work_array(phba);
5337
5338         /* If driver cannot allocate memory, indicate fcf is in use */
5339         if (!vports)
5340                 return 1;
5341
5342         for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
5343                 shost = lpfc_shost_from_vport(vports[i]);
5344                 spin_lock_irq(shost->host_lock);
5345                 list_for_each_entry(ndlp, &vports[i]->fc_nodes, nlp_listp) {
5346                         if (NLP_CHK_NODE_ACT(ndlp) && ndlp->rport &&
5347                           (ndlp->rport->roles & FC_RPORT_ROLE_FCP_TARGET)) {
5348                                 ret = 1;
5349                                 spin_unlock_irq(shost->host_lock);
5350                                 goto out;
5351                         } else {
5352                                 lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
5353                                         "2624 RPI %x DID %x flg %x still "
5354                                         "logged in\n",
5355                                         ndlp->nlp_rpi, ndlp->nlp_DID,
5356                                         ndlp->nlp_flag);
5357                                 if (ndlp->nlp_flag & NLP_RPI_VALID)
5358                                         ret = 1;
5359                         }
5360                 }
5361                 spin_unlock_irq(shost->host_lock);
5362         }
5363 out:
5364         lpfc_destroy_vport_work_array(phba, vports);
5365         return ret;
5366 }
5367
5368 /**
5369  * lpfc_unregister_vfi_cmpl - Completion handler for unreg vfi.
5370  * @phba: Pointer to hba context object.
5371  * @mboxq: Pointer to mailbox object.
5372  *
5373  * This function frees memory associated with the mailbox command.
5374  */
5375 static void
5376 lpfc_unregister_vfi_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
5377 {
5378         struct lpfc_vport *vport = mboxq->vport;
5379         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
5380
5381         if (mboxq->u.mb.mbxStatus) {
5382                 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY|LOG_MBOX,
5383                         "2555 UNREG_VFI mbxStatus error x%x "
5384                         "HBA state x%x\n",
5385                         mboxq->u.mb.mbxStatus, vport->port_state);
5386         }
5387         spin_lock_irq(shost->host_lock);
5388         phba->pport->fc_flag &= ~FC_VFI_REGISTERED;
5389         spin_unlock_irq(shost->host_lock);
5390         mempool_free(mboxq, phba->mbox_mem_pool);
5391         return;
5392 }
5393
5394 /**
5395  * lpfc_unregister_fcfi_cmpl - Completion handler for unreg fcfi.
5396  * @phba: Pointer to hba context object.
5397  * @mboxq: Pointer to mailbox object.
5398  *
5399  * This function frees memory associated with the mailbox command.
5400  */
5401 static void
5402 lpfc_unregister_fcfi_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
5403 {
5404         struct lpfc_vport *vport = mboxq->vport;
5405
5406         if (mboxq->u.mb.mbxStatus) {
5407                 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY|LOG_MBOX,
5408                         "2550 UNREG_FCFI mbxStatus error x%x "
5409                         "HBA state x%x\n",
5410                         mboxq->u.mb.mbxStatus, vport->port_state);
5411         }
5412         mempool_free(mboxq, phba->mbox_mem_pool);
5413         return;
5414 }