xref: /openbmc/linux/drivers/scsi/lpfc/lpfc_hbadisc.c (revision d2999e1b)
1 /*******************************************************************
2  * This file is part of the Emulex Linux Device Driver for         *
3  * Fibre Channel Host Bus Adapters.                                *
4  * Copyright (C) 2004-2014 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 	lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_NODE,
127 			 "3181 dev_loss_callbk x%06x, rport %p flg x%x\n",
128 			 ndlp->nlp_DID, ndlp->rport, ndlp->nlp_flag);
129 
130 	/* Don't defer this if we are in the process of deleting the vport
131 	 * or unloading the driver. The unload will cleanup the node
132 	 * appropriately we just need to cleanup the ndlp rport info here.
133 	 */
134 	if (vport->load_flag & FC_UNLOADING) {
135 		put_node = rdata->pnode != NULL;
136 		put_rport = ndlp->rport != NULL;
137 		rdata->pnode = NULL;
138 		ndlp->rport = NULL;
139 		if (put_node)
140 			lpfc_nlp_put(ndlp);
141 		if (put_rport)
142 			put_device(&rport->dev);
143 		return;
144 	}
145 
146 	if (ndlp->nlp_state == NLP_STE_MAPPED_NODE)
147 		return;
148 
149 	if (ndlp->nlp_type & NLP_FABRIC) {
150 
151 		/* If the WWPN of the rport and ndlp don't match, ignore it */
152 		if (rport->port_name != wwn_to_u64(ndlp->nlp_portname.u.wwn)) {
153 			put_device(&rport->dev);
154 			return;
155 		}
156 	}
157 
158 	evtp = &ndlp->dev_loss_evt;
159 
160 	if (!list_empty(&evtp->evt_listp))
161 		return;
162 
163 	evtp->evt_arg1  = lpfc_nlp_get(ndlp);
164 
165 	spin_lock_irq(&phba->hbalock);
166 	/* We need to hold the node by incrementing the reference
167 	 * count until this queued work is done
168 	 */
169 	if (evtp->evt_arg1) {
170 		evtp->evt = LPFC_EVT_DEV_LOSS;
171 		list_add_tail(&evtp->evt_listp, &phba->work_list);
172 		lpfc_worker_wake_up(phba);
173 	}
174 	spin_unlock_irq(&phba->hbalock);
175 
176 	return;
177 }
178 
179 /**
180  * lpfc_dev_loss_tmo_handler - Remote node devloss timeout handler
181  * @ndlp: Pointer to remote node object.
182  *
183  * This function is called from the worker thread when devloss timeout timer
184  * expires. For SLI4 host, this routine shall return 1 when at lease one
185  * remote node, including this @ndlp, is still in use of FCF; otherwise, this
186  * routine shall return 0 when there is no remote node is still in use of FCF
187  * when devloss timeout happened to this @ndlp.
188  **/
189 static int
190 lpfc_dev_loss_tmo_handler(struct lpfc_nodelist *ndlp)
191 {
192 	struct lpfc_rport_data *rdata;
193 	struct fc_rport   *rport;
194 	struct lpfc_vport *vport;
195 	struct lpfc_hba   *phba;
196 	uint8_t *name;
197 	int  put_node;
198 	int  put_rport;
199 	int warn_on = 0;
200 	int fcf_inuse = 0;
201 
202 	rport = ndlp->rport;
203 
204 	if (!rport)
205 		return fcf_inuse;
206 
207 	rdata = rport->dd_data;
208 	name = (uint8_t *) &ndlp->nlp_portname;
209 	vport = ndlp->vport;
210 	phba  = vport->phba;
211 
212 	if (phba->sli_rev == LPFC_SLI_REV4)
213 		fcf_inuse = lpfc_fcf_inuse(phba);
214 
215 	lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
216 		"rport devlosstmo:did:x%x type:x%x id:x%x",
217 		ndlp->nlp_DID, ndlp->nlp_type, rport->scsi_target_id);
218 
219 	lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_NODE,
220 			 "3182 dev_loss_tmo_handler x%06x, rport %p flg x%x\n",
221 			 ndlp->nlp_DID, ndlp->rport, ndlp->nlp_flag);
222 
223 	/* Don't defer this if we are in the process of deleting the vport
224 	 * or unloading the driver. The unload will cleanup the node
225 	 * appropriately we just need to cleanup the ndlp rport info here.
226 	 */
227 	if (vport->load_flag & FC_UNLOADING) {
228 		if (ndlp->nlp_sid != NLP_NO_SID) {
229 			/* flush the target */
230 			lpfc_sli_abort_iocb(vport,
231 					&phba->sli.ring[phba->sli.fcp_ring],
232 					ndlp->nlp_sid, 0, LPFC_CTX_TGT);
233 		}
234 		put_node = rdata->pnode != NULL;
235 		put_rport = ndlp->rport != NULL;
236 		rdata->pnode = NULL;
237 		ndlp->rport = NULL;
238 		if (put_node)
239 			lpfc_nlp_put(ndlp);
240 		if (put_rport)
241 			put_device(&rport->dev);
242 		return fcf_inuse;
243 	}
244 
245 	if (ndlp->nlp_state == NLP_STE_MAPPED_NODE) {
246 		lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
247 				 "0284 Devloss timeout Ignored on "
248 				 "WWPN %x:%x:%x:%x:%x:%x:%x:%x "
249 				 "NPort x%x\n",
250 				 *name, *(name+1), *(name+2), *(name+3),
251 				 *(name+4), *(name+5), *(name+6), *(name+7),
252 				 ndlp->nlp_DID);
253 		return fcf_inuse;
254 	}
255 
256 	if (ndlp->nlp_type & NLP_FABRIC) {
257 		/* We will clean up these Nodes in linkup */
258 		put_node = rdata->pnode != NULL;
259 		put_rport = ndlp->rport != NULL;
260 		rdata->pnode = NULL;
261 		ndlp->rport = NULL;
262 		if (put_node)
263 			lpfc_nlp_put(ndlp);
264 		if (put_rport)
265 			put_device(&rport->dev);
266 		return fcf_inuse;
267 	}
268 
269 	if (ndlp->nlp_sid != NLP_NO_SID) {
270 		warn_on = 1;
271 		/* flush the target */
272 		lpfc_sli_abort_iocb(vport, &phba->sli.ring[phba->sli.fcp_ring],
273 				    ndlp->nlp_sid, 0, LPFC_CTX_TGT);
274 	}
275 
276 	if (warn_on) {
277 		lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
278 				 "0203 Devloss timeout on "
279 				 "WWPN %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x "
280 				 "NPort x%06x Data: x%x x%x x%x\n",
281 				 *name, *(name+1), *(name+2), *(name+3),
282 				 *(name+4), *(name+5), *(name+6), *(name+7),
283 				 ndlp->nlp_DID, ndlp->nlp_flag,
284 				 ndlp->nlp_state, ndlp->nlp_rpi);
285 	} else {
286 		lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
287 				 "0204 Devloss timeout on "
288 				 "WWPN %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x "
289 				 "NPort x%06x Data: x%x x%x x%x\n",
290 				 *name, *(name+1), *(name+2), *(name+3),
291 				 *(name+4), *(name+5), *(name+6), *(name+7),
292 				 ndlp->nlp_DID, ndlp->nlp_flag,
293 				 ndlp->nlp_state, ndlp->nlp_rpi);
294 	}
295 
296 	put_node = rdata->pnode != NULL;
297 	put_rport = ndlp->rport != NULL;
298 	rdata->pnode = NULL;
299 	ndlp->rport = NULL;
300 	if (put_node)
301 		lpfc_nlp_put(ndlp);
302 	if (put_rport)
303 		put_device(&rport->dev);
304 
305 	if (!(vport->load_flag & FC_UNLOADING) &&
306 	    !(ndlp->nlp_flag & NLP_DELAY_TMO) &&
307 	    !(ndlp->nlp_flag & NLP_NPR_2B_DISC) &&
308 	    (ndlp->nlp_state != NLP_STE_UNMAPPED_NODE) &&
309 	    (ndlp->nlp_state != NLP_STE_REG_LOGIN_ISSUE) &&
310 	    (ndlp->nlp_state != NLP_STE_PRLI_ISSUE))
311 		lpfc_disc_state_machine(vport, ndlp, NULL, NLP_EVT_DEVICE_RM);
312 
313 	return fcf_inuse;
314 }
315 
316 /**
317  * lpfc_sli4_post_dev_loss_tmo_handler - SLI4 post devloss timeout handler
318  * @phba: Pointer to hba context object.
319  * @fcf_inuse: SLI4 FCF in-use state reported from devloss timeout handler.
320  * @nlp_did: remote node identifer with devloss timeout.
321  *
322  * This function is called from the worker thread after invoking devloss
323  * timeout handler and releasing the reference count for the ndlp with
324  * which the devloss timeout was handled for SLI4 host. For the devloss
325  * timeout of the last remote node which had been in use of FCF, when this
326  * routine is invoked, it shall be guaranteed that none of the remote are
327  * in-use of FCF. When devloss timeout to the last remote using the FCF,
328  * if the FIP engine is neither in FCF table scan process nor roundrobin
329  * failover process, the in-use FCF shall be unregistered. If the FIP
330  * engine is in FCF discovery process, the devloss timeout state shall
331  * be set for either the FCF table scan process or roundrobin failover
332  * process to unregister the in-use FCF.
333  **/
334 static void
335 lpfc_sli4_post_dev_loss_tmo_handler(struct lpfc_hba *phba, int fcf_inuse,
336 				    uint32_t nlp_did)
337 {
338 	/* If devloss timeout happened to a remote node when FCF had no
339 	 * longer been in-use, do nothing.
340 	 */
341 	if (!fcf_inuse)
342 		return;
343 
344 	if ((phba->hba_flag & HBA_FIP_SUPPORT) && !lpfc_fcf_inuse(phba)) {
345 		spin_lock_irq(&phba->hbalock);
346 		if (phba->fcf.fcf_flag & FCF_DISCOVERY) {
347 			if (phba->hba_flag & HBA_DEVLOSS_TMO) {
348 				spin_unlock_irq(&phba->hbalock);
349 				return;
350 			}
351 			phba->hba_flag |= HBA_DEVLOSS_TMO;
352 			lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
353 					"2847 Last remote node (x%x) using "
354 					"FCF devloss tmo\n", nlp_did);
355 		}
356 		if (phba->fcf.fcf_flag & FCF_REDISC_PROG) {
357 			spin_unlock_irq(&phba->hbalock);
358 			lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
359 					"2868 Devloss tmo to FCF rediscovery "
360 					"in progress\n");
361 			return;
362 		}
363 		if (!(phba->hba_flag & (FCF_TS_INPROG | FCF_RR_INPROG))) {
364 			spin_unlock_irq(&phba->hbalock);
365 			lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
366 					"2869 Devloss tmo to idle FIP engine, "
367 					"unreg in-use FCF and rescan.\n");
368 			/* Unregister in-use FCF and rescan */
369 			lpfc_unregister_fcf_rescan(phba);
370 			return;
371 		}
372 		spin_unlock_irq(&phba->hbalock);
373 		if (phba->hba_flag & FCF_TS_INPROG)
374 			lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
375 					"2870 FCF table scan in progress\n");
376 		if (phba->hba_flag & FCF_RR_INPROG)
377 			lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
378 					"2871 FLOGI roundrobin FCF failover "
379 					"in progress\n");
380 	}
381 	lpfc_unregister_unused_fcf(phba);
382 }
383 
384 /**
385  * lpfc_alloc_fast_evt - Allocates data structure for posting event
386  * @phba: Pointer to hba context object.
387  *
388  * This function is called from the functions which need to post
389  * events from interrupt context. This function allocates data
390  * structure required for posting event. It also keeps track of
391  * number of events pending and prevent event storm when there are
392  * too many events.
393  **/
394 struct lpfc_fast_path_event *
395 lpfc_alloc_fast_evt(struct lpfc_hba *phba) {
396 	struct lpfc_fast_path_event *ret;
397 
398 	/* If there are lot of fast event do not exhaust memory due to this */
399 	if (atomic_read(&phba->fast_event_count) > LPFC_MAX_EVT_COUNT)
400 		return NULL;
401 
402 	ret = kzalloc(sizeof(struct lpfc_fast_path_event),
403 			GFP_ATOMIC);
404 	if (ret) {
405 		atomic_inc(&phba->fast_event_count);
406 		INIT_LIST_HEAD(&ret->work_evt.evt_listp);
407 		ret->work_evt.evt = LPFC_EVT_FASTPATH_MGMT_EVT;
408 	}
409 	return ret;
410 }
411 
412 /**
413  * lpfc_free_fast_evt - Frees event data structure
414  * @phba: Pointer to hba context object.
415  * @evt:  Event object which need to be freed.
416  *
417  * This function frees the data structure required for posting
418  * events.
419  **/
420 void
421 lpfc_free_fast_evt(struct lpfc_hba *phba,
422 		struct lpfc_fast_path_event *evt) {
423 
424 	atomic_dec(&phba->fast_event_count);
425 	kfree(evt);
426 }
427 
428 /**
429  * lpfc_send_fastpath_evt - Posts events generated from fast path
430  * @phba: Pointer to hba context object.
431  * @evtp: Event data structure.
432  *
433  * This function is called from worker thread, when the interrupt
434  * context need to post an event. This function posts the event
435  * to fc transport netlink interface.
436  **/
437 static void
438 lpfc_send_fastpath_evt(struct lpfc_hba *phba,
439 		struct lpfc_work_evt *evtp)
440 {
441 	unsigned long evt_category, evt_sub_category;
442 	struct lpfc_fast_path_event *fast_evt_data;
443 	char *evt_data;
444 	uint32_t evt_data_size;
445 	struct Scsi_Host *shost;
446 
447 	fast_evt_data = container_of(evtp, struct lpfc_fast_path_event,
448 		work_evt);
449 
450 	evt_category = (unsigned long) fast_evt_data->un.fabric_evt.event_type;
451 	evt_sub_category = (unsigned long) fast_evt_data->un.
452 			fabric_evt.subcategory;
453 	shost = lpfc_shost_from_vport(fast_evt_data->vport);
454 	if (evt_category == FC_REG_FABRIC_EVENT) {
455 		if (evt_sub_category == LPFC_EVENT_FCPRDCHKERR) {
456 			evt_data = (char *) &fast_evt_data->un.read_check_error;
457 			evt_data_size = sizeof(fast_evt_data->un.
458 				read_check_error);
459 		} else if ((evt_sub_category == LPFC_EVENT_FABRIC_BUSY) ||
460 			(evt_sub_category == LPFC_EVENT_PORT_BUSY)) {
461 			evt_data = (char *) &fast_evt_data->un.fabric_evt;
462 			evt_data_size = sizeof(fast_evt_data->un.fabric_evt);
463 		} else {
464 			lpfc_free_fast_evt(phba, fast_evt_data);
465 			return;
466 		}
467 	} else if (evt_category == FC_REG_SCSI_EVENT) {
468 		switch (evt_sub_category) {
469 		case LPFC_EVENT_QFULL:
470 		case LPFC_EVENT_DEVBSY:
471 			evt_data = (char *) &fast_evt_data->un.scsi_evt;
472 			evt_data_size = sizeof(fast_evt_data->un.scsi_evt);
473 			break;
474 		case LPFC_EVENT_CHECK_COND:
475 			evt_data = (char *) &fast_evt_data->un.check_cond_evt;
476 			evt_data_size =  sizeof(fast_evt_data->un.
477 				check_cond_evt);
478 			break;
479 		case LPFC_EVENT_VARQUEDEPTH:
480 			evt_data = (char *) &fast_evt_data->un.queue_depth_evt;
481 			evt_data_size = sizeof(fast_evt_data->un.
482 				queue_depth_evt);
483 			break;
484 		default:
485 			lpfc_free_fast_evt(phba, fast_evt_data);
486 			return;
487 		}
488 	} else {
489 		lpfc_free_fast_evt(phba, fast_evt_data);
490 		return;
491 	}
492 
493 	fc_host_post_vendor_event(shost,
494 		fc_get_event_number(),
495 		evt_data_size,
496 		evt_data,
497 		LPFC_NL_VENDOR_ID);
498 
499 	lpfc_free_fast_evt(phba, fast_evt_data);
500 	return;
501 }
502 
503 static void
504 lpfc_work_list_done(struct lpfc_hba *phba)
505 {
506 	struct lpfc_work_evt  *evtp = NULL;
507 	struct lpfc_nodelist  *ndlp;
508 	int free_evt;
509 	int fcf_inuse;
510 	uint32_t nlp_did;
511 
512 	spin_lock_irq(&phba->hbalock);
513 	while (!list_empty(&phba->work_list)) {
514 		list_remove_head((&phba->work_list), evtp, typeof(*evtp),
515 				 evt_listp);
516 		spin_unlock_irq(&phba->hbalock);
517 		free_evt = 1;
518 		switch (evtp->evt) {
519 		case LPFC_EVT_ELS_RETRY:
520 			ndlp = (struct lpfc_nodelist *) (evtp->evt_arg1);
521 			lpfc_els_retry_delay_handler(ndlp);
522 			free_evt = 0; /* evt is part of ndlp */
523 			/* decrement the node reference count held
524 			 * for this queued work
525 			 */
526 			lpfc_nlp_put(ndlp);
527 			break;
528 		case LPFC_EVT_DEV_LOSS:
529 			ndlp = (struct lpfc_nodelist *)(evtp->evt_arg1);
530 			fcf_inuse = lpfc_dev_loss_tmo_handler(ndlp);
531 			free_evt = 0;
532 			/* decrement the node reference count held for
533 			 * this queued work
534 			 */
535 			nlp_did = ndlp->nlp_DID;
536 			lpfc_nlp_put(ndlp);
537 			if (phba->sli_rev == LPFC_SLI_REV4)
538 				lpfc_sli4_post_dev_loss_tmo_handler(phba,
539 								    fcf_inuse,
540 								    nlp_did);
541 			break;
542 		case LPFC_EVT_ONLINE:
543 			if (phba->link_state < LPFC_LINK_DOWN)
544 				*(int *) (evtp->evt_arg1) = lpfc_online(phba);
545 			else
546 				*(int *) (evtp->evt_arg1) = 0;
547 			complete((struct completion *)(evtp->evt_arg2));
548 			break;
549 		case LPFC_EVT_OFFLINE_PREP:
550 			if (phba->link_state >= LPFC_LINK_DOWN)
551 				lpfc_offline_prep(phba, LPFC_MBX_WAIT);
552 			*(int *)(evtp->evt_arg1) = 0;
553 			complete((struct completion *)(evtp->evt_arg2));
554 			break;
555 		case LPFC_EVT_OFFLINE:
556 			lpfc_offline(phba);
557 			lpfc_sli_brdrestart(phba);
558 			*(int *)(evtp->evt_arg1) =
559 				lpfc_sli_brdready(phba, HS_FFRDY | HS_MBRDY);
560 			lpfc_unblock_mgmt_io(phba);
561 			complete((struct completion *)(evtp->evt_arg2));
562 			break;
563 		case LPFC_EVT_WARM_START:
564 			lpfc_offline(phba);
565 			lpfc_reset_barrier(phba);
566 			lpfc_sli_brdreset(phba);
567 			lpfc_hba_down_post(phba);
568 			*(int *)(evtp->evt_arg1) =
569 				lpfc_sli_brdready(phba, HS_MBRDY);
570 			lpfc_unblock_mgmt_io(phba);
571 			complete((struct completion *)(evtp->evt_arg2));
572 			break;
573 		case LPFC_EVT_KILL:
574 			lpfc_offline(phba);
575 			*(int *)(evtp->evt_arg1)
576 				= (phba->pport->stopped)
577 				        ? 0 : lpfc_sli_brdkill(phba);
578 			lpfc_unblock_mgmt_io(phba);
579 			complete((struct completion *)(evtp->evt_arg2));
580 			break;
581 		case LPFC_EVT_FASTPATH_MGMT_EVT:
582 			lpfc_send_fastpath_evt(phba, evtp);
583 			free_evt = 0;
584 			break;
585 		case LPFC_EVT_RESET_HBA:
586 			if (!(phba->pport->load_flag & FC_UNLOADING))
587 				lpfc_reset_hba(phba);
588 			break;
589 		}
590 		if (free_evt)
591 			kfree(evtp);
592 		spin_lock_irq(&phba->hbalock);
593 	}
594 	spin_unlock_irq(&phba->hbalock);
595 
596 }
597 
598 static void
599 lpfc_work_done(struct lpfc_hba *phba)
600 {
601 	struct lpfc_sli_ring *pring;
602 	uint32_t ha_copy, status, control, work_port_events;
603 	struct lpfc_vport **vports;
604 	struct lpfc_vport *vport;
605 	int i;
606 
607 	spin_lock_irq(&phba->hbalock);
608 	ha_copy = phba->work_ha;
609 	phba->work_ha = 0;
610 	spin_unlock_irq(&phba->hbalock);
611 
612 	/* First, try to post the next mailbox command to SLI4 device */
613 	if (phba->pci_dev_grp == LPFC_PCI_DEV_OC)
614 		lpfc_sli4_post_async_mbox(phba);
615 
616 	if (ha_copy & HA_ERATT)
617 		/* Handle the error attention event */
618 		lpfc_handle_eratt(phba);
619 
620 	if (ha_copy & HA_MBATT)
621 		lpfc_sli_handle_mb_event(phba);
622 
623 	if (ha_copy & HA_LATT)
624 		lpfc_handle_latt(phba);
625 
626 	/* Process SLI4 events */
627 	if (phba->pci_dev_grp == LPFC_PCI_DEV_OC) {
628 		if (phba->hba_flag & HBA_RRQ_ACTIVE)
629 			lpfc_handle_rrq_active(phba);
630 		if (phba->hba_flag & FCP_XRI_ABORT_EVENT)
631 			lpfc_sli4_fcp_xri_abort_event_proc(phba);
632 		if (phba->hba_flag & ELS_XRI_ABORT_EVENT)
633 			lpfc_sli4_els_xri_abort_event_proc(phba);
634 		if (phba->hba_flag & ASYNC_EVENT)
635 			lpfc_sli4_async_event_proc(phba);
636 		if (phba->hba_flag & HBA_POST_RECEIVE_BUFFER) {
637 			spin_lock_irq(&phba->hbalock);
638 			phba->hba_flag &= ~HBA_POST_RECEIVE_BUFFER;
639 			spin_unlock_irq(&phba->hbalock);
640 			lpfc_sli_hbqbuf_add_hbqs(phba, LPFC_ELS_HBQ);
641 		}
642 		if (phba->fcf.fcf_flag & FCF_REDISC_EVT)
643 			lpfc_sli4_fcf_redisc_event_proc(phba);
644 	}
645 
646 	vports = lpfc_create_vport_work_array(phba);
647 	if (vports != NULL)
648 		for (i = 0; i <= phba->max_vports; i++) {
649 			/*
650 			 * We could have no vports in array if unloading, so if
651 			 * this happens then just use the pport
652 			 */
653 			if (vports[i] == NULL && i == 0)
654 				vport = phba->pport;
655 			else
656 				vport = vports[i];
657 			if (vport == NULL)
658 				break;
659 			spin_lock_irq(&vport->work_port_lock);
660 			work_port_events = vport->work_port_events;
661 			vport->work_port_events &= ~work_port_events;
662 			spin_unlock_irq(&vport->work_port_lock);
663 			if (work_port_events & WORKER_DISC_TMO)
664 				lpfc_disc_timeout_handler(vport);
665 			if (work_port_events & WORKER_ELS_TMO)
666 				lpfc_els_timeout_handler(vport);
667 			if (work_port_events & WORKER_HB_TMO)
668 				lpfc_hb_timeout_handler(phba);
669 			if (work_port_events & WORKER_MBOX_TMO)
670 				lpfc_mbox_timeout_handler(phba);
671 			if (work_port_events & WORKER_FABRIC_BLOCK_TMO)
672 				lpfc_unblock_fabric_iocbs(phba);
673 			if (work_port_events & WORKER_FDMI_TMO)
674 				lpfc_fdmi_timeout_handler(vport);
675 			if (work_port_events & WORKER_RAMP_DOWN_QUEUE)
676 				lpfc_ramp_down_queue_handler(phba);
677 			if (work_port_events & WORKER_DELAYED_DISC_TMO)
678 				lpfc_delayed_disc_timeout_handler(vport);
679 		}
680 	lpfc_destroy_vport_work_array(phba, vports);
681 
682 	pring = &phba->sli.ring[LPFC_ELS_RING];
683 	status = (ha_copy & (HA_RXMASK  << (4*LPFC_ELS_RING)));
684 	status >>= (4*LPFC_ELS_RING);
685 	if ((status & HA_RXMASK) ||
686 	    (pring->flag & LPFC_DEFERRED_RING_EVENT) ||
687 	    (phba->hba_flag & HBA_SP_QUEUE_EVT)) {
688 		if (pring->flag & LPFC_STOP_IOCB_EVENT) {
689 			pring->flag |= LPFC_DEFERRED_RING_EVENT;
690 			/* Set the lpfc data pending flag */
691 			set_bit(LPFC_DATA_READY, &phba->data_flags);
692 		} else {
693 			if (phba->link_state >= LPFC_LINK_UP) {
694 				pring->flag &= ~LPFC_DEFERRED_RING_EVENT;
695 				lpfc_sli_handle_slow_ring_event(phba, pring,
696 								(status &
697 								HA_RXMASK));
698 			}
699 		}
700 		if ((phba->sli_rev == LPFC_SLI_REV4) &
701 				 (!list_empty(&pring->txq)))
702 			lpfc_drain_txq(phba);
703 		/*
704 		 * Turn on Ring interrupts
705 		 */
706 		if (phba->sli_rev <= LPFC_SLI_REV3) {
707 			spin_lock_irq(&phba->hbalock);
708 			control = readl(phba->HCregaddr);
709 			if (!(control & (HC_R0INT_ENA << LPFC_ELS_RING))) {
710 				lpfc_debugfs_slow_ring_trc(phba,
711 					"WRK Enable ring: cntl:x%x hacopy:x%x",
712 					control, ha_copy, 0);
713 
714 				control |= (HC_R0INT_ENA << LPFC_ELS_RING);
715 				writel(control, phba->HCregaddr);
716 				readl(phba->HCregaddr); /* flush */
717 			} else {
718 				lpfc_debugfs_slow_ring_trc(phba,
719 					"WRK Ring ok:     cntl:x%x hacopy:x%x",
720 					control, ha_copy, 0);
721 			}
722 			spin_unlock_irq(&phba->hbalock);
723 		}
724 	}
725 	lpfc_work_list_done(phba);
726 }
727 
728 int
729 lpfc_do_work(void *p)
730 {
731 	struct lpfc_hba *phba = p;
732 	int rc;
733 
734 	set_user_nice(current, MIN_NICE);
735 	current->flags |= PF_NOFREEZE;
736 	phba->data_flags = 0;
737 
738 	while (!kthread_should_stop()) {
739 		/* wait and check worker queue activities */
740 		rc = wait_event_interruptible(phba->work_waitq,
741 					(test_and_clear_bit(LPFC_DATA_READY,
742 							    &phba->data_flags)
743 					 || kthread_should_stop()));
744 		/* Signal wakeup shall terminate the worker thread */
745 		if (rc) {
746 			lpfc_printf_log(phba, KERN_ERR, LOG_ELS,
747 					"0433 Wakeup on signal: rc=x%x\n", rc);
748 			break;
749 		}
750 
751 		/* Attend pending lpfc data processing */
752 		lpfc_work_done(phba);
753 	}
754 	phba->worker_thread = NULL;
755 	lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
756 			"0432 Worker thread stopped.\n");
757 	return 0;
758 }
759 
760 /*
761  * This is only called to handle FC worker events. Since this a rare
762  * occurrence, we allocate a struct lpfc_work_evt structure here instead of
763  * embedding it in the IOCB.
764  */
765 int
766 lpfc_workq_post_event(struct lpfc_hba *phba, void *arg1, void *arg2,
767 		      uint32_t evt)
768 {
769 	struct lpfc_work_evt  *evtp;
770 	unsigned long flags;
771 
772 	/*
773 	 * All Mailbox completions and LPFC_ELS_RING rcv ring IOCB events will
774 	 * be queued to worker thread for processing
775 	 */
776 	evtp = kmalloc(sizeof(struct lpfc_work_evt), GFP_ATOMIC);
777 	if (!evtp)
778 		return 0;
779 
780 	evtp->evt_arg1  = arg1;
781 	evtp->evt_arg2  = arg2;
782 	evtp->evt       = evt;
783 
784 	spin_lock_irqsave(&phba->hbalock, flags);
785 	list_add_tail(&evtp->evt_listp, &phba->work_list);
786 	spin_unlock_irqrestore(&phba->hbalock, flags);
787 
788 	lpfc_worker_wake_up(phba);
789 
790 	return 1;
791 }
792 
793 void
794 lpfc_cleanup_rpis(struct lpfc_vport *vport, int remove)
795 {
796 	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
797 	struct lpfc_hba  *phba = vport->phba;
798 	struct lpfc_nodelist *ndlp, *next_ndlp;
799 	int  rc;
800 
801 	list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) {
802 		if (!NLP_CHK_NODE_ACT(ndlp))
803 			continue;
804 		if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
805 			continue;
806 		if ((phba->sli3_options & LPFC_SLI3_VPORT_TEARDOWN) ||
807 			((vport->port_type == LPFC_NPIV_PORT) &&
808 			(ndlp->nlp_DID == NameServer_DID)))
809 			lpfc_unreg_rpi(vport, ndlp);
810 
811 		/* Leave Fabric nodes alone on link down */
812 		if ((phba->sli_rev < LPFC_SLI_REV4) &&
813 		    (!remove && ndlp->nlp_type & NLP_FABRIC))
814 			continue;
815 		rc = lpfc_disc_state_machine(vport, ndlp, NULL,
816 					     remove
817 					     ? NLP_EVT_DEVICE_RM
818 					     : NLP_EVT_DEVICE_RECOVERY);
819 	}
820 	if (phba->sli3_options & LPFC_SLI3_VPORT_TEARDOWN) {
821 		if (phba->sli_rev == LPFC_SLI_REV4)
822 			lpfc_sli4_unreg_all_rpis(vport);
823 		lpfc_mbx_unreg_vpi(vport);
824 		spin_lock_irq(shost->host_lock);
825 		vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
826 		spin_unlock_irq(shost->host_lock);
827 	}
828 }
829 
830 void
831 lpfc_port_link_failure(struct lpfc_vport *vport)
832 {
833 	lpfc_vport_set_state(vport, FC_VPORT_LINKDOWN);
834 
835 	/* Cleanup any outstanding received buffers */
836 	lpfc_cleanup_rcv_buffers(vport);
837 
838 	/* Cleanup any outstanding RSCN activity */
839 	lpfc_els_flush_rscn(vport);
840 
841 	/* Cleanup any outstanding ELS commands */
842 	lpfc_els_flush_cmd(vport);
843 
844 	lpfc_cleanup_rpis(vport, 0);
845 
846 	/* Turn off discovery timer if its running */
847 	lpfc_can_disctmo(vport);
848 }
849 
850 void
851 lpfc_linkdown_port(struct lpfc_vport *vport)
852 {
853 	struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
854 
855 	fc_host_post_event(shost, fc_get_event_number(), FCH_EVT_LINKDOWN, 0);
856 
857 	lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
858 		"Link Down:       state:x%x rtry:x%x flg:x%x",
859 		vport->port_state, vport->fc_ns_retry, vport->fc_flag);
860 
861 	lpfc_port_link_failure(vport);
862 
863 	/* Stop delayed Nport discovery */
864 	spin_lock_irq(shost->host_lock);
865 	vport->fc_flag &= ~FC_DISC_DELAYED;
866 	spin_unlock_irq(shost->host_lock);
867 	del_timer_sync(&vport->delayed_disc_tmo);
868 }
869 
870 int
871 lpfc_linkdown(struct lpfc_hba *phba)
872 {
873 	struct lpfc_vport *vport = phba->pport;
874 	struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
875 	struct lpfc_vport **vports;
876 	LPFC_MBOXQ_t          *mb;
877 	int i;
878 
879 	if (phba->link_state == LPFC_LINK_DOWN)
880 		return 0;
881 
882 	/* Block all SCSI stack I/Os */
883 	lpfc_scsi_dev_block(phba);
884 
885 	spin_lock_irq(&phba->hbalock);
886 	phba->fcf.fcf_flag &= ~(FCF_AVAILABLE | FCF_SCAN_DONE);
887 	spin_unlock_irq(&phba->hbalock);
888 	if (phba->link_state > LPFC_LINK_DOWN) {
889 		phba->link_state = LPFC_LINK_DOWN;
890 		spin_lock_irq(shost->host_lock);
891 		phba->pport->fc_flag &= ~FC_LBIT;
892 		spin_unlock_irq(shost->host_lock);
893 	}
894 	vports = lpfc_create_vport_work_array(phba);
895 	if (vports != NULL)
896 		for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
897 			/* Issue a LINK DOWN event to all nodes */
898 			lpfc_linkdown_port(vports[i]);
899 		}
900 	lpfc_destroy_vport_work_array(phba, vports);
901 	/* Clean up any firmware default rpi's */
902 	mb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
903 	if (mb) {
904 		lpfc_unreg_did(phba, 0xffff, LPFC_UNREG_ALL_DFLT_RPIS, mb);
905 		mb->vport = vport;
906 		mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
907 		if (lpfc_sli_issue_mbox(phba, mb, MBX_NOWAIT)
908 		    == MBX_NOT_FINISHED) {
909 			mempool_free(mb, phba->mbox_mem_pool);
910 		}
911 	}
912 
913 	/* Setup myDID for link up if we are in pt2pt mode */
914 	if (phba->pport->fc_flag & FC_PT2PT) {
915 		phba->pport->fc_myDID = 0;
916 		mb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
917 		if (mb) {
918 			lpfc_config_link(phba, mb);
919 			mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
920 			mb->vport = vport;
921 			if (lpfc_sli_issue_mbox(phba, mb, MBX_NOWAIT)
922 			    == MBX_NOT_FINISHED) {
923 				mempool_free(mb, phba->mbox_mem_pool);
924 			}
925 		}
926 		spin_lock_irq(shost->host_lock);
927 		phba->pport->fc_flag &= ~(FC_PT2PT | FC_PT2PT_PLOGI);
928 		spin_unlock_irq(shost->host_lock);
929 	}
930 
931 	return 0;
932 }
933 
934 static void
935 lpfc_linkup_cleanup_nodes(struct lpfc_vport *vport)
936 {
937 	struct lpfc_nodelist *ndlp;
938 
939 	list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
940 		if (!NLP_CHK_NODE_ACT(ndlp))
941 			continue;
942 		if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
943 			continue;
944 		if (ndlp->nlp_type & NLP_FABRIC) {
945 			/* On Linkup its safe to clean up the ndlp
946 			 * from Fabric connections.
947 			 */
948 			if (ndlp->nlp_DID != Fabric_DID)
949 				lpfc_unreg_rpi(vport, ndlp);
950 			lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
951 		} else if (!(ndlp->nlp_flag & NLP_NPR_ADISC)) {
952 			/* Fail outstanding IO now since device is
953 			 * marked for PLOGI.
954 			 */
955 			lpfc_unreg_rpi(vport, ndlp);
956 		}
957 	}
958 }
959 
960 static void
961 lpfc_linkup_port(struct lpfc_vport *vport)
962 {
963 	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
964 	struct lpfc_hba  *phba = vport->phba;
965 
966 	if ((vport->load_flag & FC_UNLOADING) != 0)
967 		return;
968 
969 	lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
970 		"Link Up:         top:x%x speed:x%x flg:x%x",
971 		phba->fc_topology, phba->fc_linkspeed, phba->link_flag);
972 
973 	/* If NPIV is not enabled, only bring the physical port up */
974 	if (!(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
975 		(vport != phba->pport))
976 		return;
977 
978 	fc_host_post_event(shost, fc_get_event_number(), FCH_EVT_LINKUP, 0);
979 
980 	spin_lock_irq(shost->host_lock);
981 	vport->fc_flag &= ~(FC_PT2PT | FC_PT2PT_PLOGI | FC_ABORT_DISCOVERY |
982 			    FC_RSCN_MODE | FC_NLP_MORE | FC_RSCN_DISCOVERY);
983 	vport->fc_flag |= FC_NDISC_ACTIVE;
984 	vport->fc_ns_retry = 0;
985 	spin_unlock_irq(shost->host_lock);
986 
987 	if (vport->fc_flag & FC_LBIT)
988 		lpfc_linkup_cleanup_nodes(vport);
989 
990 }
991 
992 static int
993 lpfc_linkup(struct lpfc_hba *phba)
994 {
995 	struct lpfc_vport **vports;
996 	int i;
997 
998 	lpfc_cleanup_wt_rrqs(phba);
999 	phba->link_state = LPFC_LINK_UP;
1000 
1001 	/* Unblock fabric iocbs if they are blocked */
1002 	clear_bit(FABRIC_COMANDS_BLOCKED, &phba->bit_flags);
1003 	del_timer_sync(&phba->fabric_block_timer);
1004 
1005 	vports = lpfc_create_vport_work_array(phba);
1006 	if (vports != NULL)
1007 		for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++)
1008 			lpfc_linkup_port(vports[i]);
1009 	lpfc_destroy_vport_work_array(phba, vports);
1010 
1011 	return 0;
1012 }
1013 
1014 /*
1015  * This routine handles processing a CLEAR_LA mailbox
1016  * command upon completion. It is setup in the LPFC_MBOXQ
1017  * as the completion routine when the command is
1018  * handed off to the SLI layer.
1019  */
1020 static void
1021 lpfc_mbx_cmpl_clear_la(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
1022 {
1023 	struct lpfc_vport *vport = pmb->vport;
1024 	struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
1025 	struct lpfc_sli   *psli = &phba->sli;
1026 	MAILBOX_t *mb = &pmb->u.mb;
1027 	uint32_t control;
1028 
1029 	/* Since we don't do discovery right now, turn these off here */
1030 	psli->ring[psli->extra_ring].flag &= ~LPFC_STOP_IOCB_EVENT;
1031 	psli->ring[psli->fcp_ring].flag &= ~LPFC_STOP_IOCB_EVENT;
1032 	psli->ring[psli->next_ring].flag &= ~LPFC_STOP_IOCB_EVENT;
1033 
1034 	/* Check for error */
1035 	if ((mb->mbxStatus) && (mb->mbxStatus != 0x1601)) {
1036 		/* CLEAR_LA mbox error <mbxStatus> state <hba_state> */
1037 		lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
1038 				 "0320 CLEAR_LA mbxStatus error x%x hba "
1039 				 "state x%x\n",
1040 				 mb->mbxStatus, vport->port_state);
1041 		phba->link_state = LPFC_HBA_ERROR;
1042 		goto out;
1043 	}
1044 
1045 	if (vport->port_type == LPFC_PHYSICAL_PORT)
1046 		phba->link_state = LPFC_HBA_READY;
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 	mempool_free(pmb, phba->mbox_mem_pool);
1056 	return;
1057 
1058 out:
1059 	/* Device Discovery completes */
1060 	lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
1061 			 "0225 Device Discovery completes\n");
1062 	mempool_free(pmb, phba->mbox_mem_pool);
1063 
1064 	spin_lock_irq(shost->host_lock);
1065 	vport->fc_flag &= ~FC_ABORT_DISCOVERY;
1066 	spin_unlock_irq(shost->host_lock);
1067 
1068 	lpfc_can_disctmo(vport);
1069 
1070 	/* turn on Link Attention interrupts */
1071 
1072 	spin_lock_irq(&phba->hbalock);
1073 	psli->sli_flag |= LPFC_PROCESS_LA;
1074 	control = readl(phba->HCregaddr);
1075 	control |= HC_LAINT_ENA;
1076 	writel(control, phba->HCregaddr);
1077 	readl(phba->HCregaddr); /* flush */
1078 	spin_unlock_irq(&phba->hbalock);
1079 
1080 	return;
1081 }
1082 
1083 
1084 static void
1085 lpfc_mbx_cmpl_local_config_link(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
1086 {
1087 	struct lpfc_vport *vport = pmb->vport;
1088 
1089 	if (pmb->u.mb.mbxStatus)
1090 		goto out;
1091 
1092 	mempool_free(pmb, phba->mbox_mem_pool);
1093 
1094 	/* don't perform discovery for SLI4 loopback diagnostic test */
1095 	if ((phba->sli_rev == LPFC_SLI_REV4) &&
1096 	    !(phba->hba_flag & HBA_FCOE_MODE) &&
1097 	    (phba->link_flag & LS_LOOPBACK_MODE))
1098 		return;
1099 
1100 	if (phba->fc_topology == LPFC_TOPOLOGY_LOOP &&
1101 	    vport->fc_flag & FC_PUBLIC_LOOP &&
1102 	    !(vport->fc_flag & FC_LBIT)) {
1103 			/* Need to wait for FAN - use discovery timer
1104 			 * for timeout.  port_state is identically
1105 			 * LPFC_LOCAL_CFG_LINK while waiting for FAN
1106 			 */
1107 			lpfc_set_disctmo(vport);
1108 			return;
1109 	}
1110 
1111 	/* Start discovery by sending a FLOGI. port_state is identically
1112 	 * LPFC_FLOGI while waiting for FLOGI cmpl
1113 	 */
1114 	if (vport->port_state != LPFC_FLOGI || vport->fc_flag & FC_PT2PT_PLOGI)
1115 		lpfc_initial_flogi(vport);
1116 	return;
1117 
1118 out:
1119 	lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
1120 			 "0306 CONFIG_LINK mbxStatus error x%x "
1121 			 "HBA state x%x\n",
1122 			 pmb->u.mb.mbxStatus, vport->port_state);
1123 	mempool_free(pmb, phba->mbox_mem_pool);
1124 
1125 	lpfc_linkdown(phba);
1126 
1127 	lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
1128 			 "0200 CONFIG_LINK bad hba state x%x\n",
1129 			 vport->port_state);
1130 
1131 	lpfc_issue_clear_la(phba, vport);
1132 	return;
1133 }
1134 
1135 /**
1136  * lpfc_sli4_clear_fcf_rr_bmask
1137  * @phba pointer to the struct lpfc_hba for this port.
1138  * This fucnction resets the round robin bit mask and clears the
1139  * fcf priority list. The list deletions are done while holding the
1140  * hbalock. The ON_LIST flag and the FLOGI_FAILED flags are cleared
1141  * from the lpfc_fcf_pri record.
1142  **/
1143 void
1144 lpfc_sli4_clear_fcf_rr_bmask(struct lpfc_hba *phba)
1145 {
1146 	struct lpfc_fcf_pri *fcf_pri;
1147 	struct lpfc_fcf_pri *next_fcf_pri;
1148 	memset(phba->fcf.fcf_rr_bmask, 0, sizeof(*phba->fcf.fcf_rr_bmask));
1149 	spin_lock_irq(&phba->hbalock);
1150 	list_for_each_entry_safe(fcf_pri, next_fcf_pri,
1151 				&phba->fcf.fcf_pri_list, list) {
1152 		list_del_init(&fcf_pri->list);
1153 		fcf_pri->fcf_rec.flag = 0;
1154 	}
1155 	spin_unlock_irq(&phba->hbalock);
1156 }
1157 static void
1158 lpfc_mbx_cmpl_reg_fcfi(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
1159 {
1160 	struct lpfc_vport *vport = mboxq->vport;
1161 
1162 	if (mboxq->u.mb.mbxStatus) {
1163 		lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
1164 			 "2017 REG_FCFI mbxStatus error x%x "
1165 			 "HBA state x%x\n",
1166 			 mboxq->u.mb.mbxStatus, vport->port_state);
1167 		goto fail_out;
1168 	}
1169 
1170 	/* Start FCoE discovery by sending a FLOGI. */
1171 	phba->fcf.fcfi = bf_get(lpfc_reg_fcfi_fcfi, &mboxq->u.mqe.un.reg_fcfi);
1172 	/* Set the FCFI registered flag */
1173 	spin_lock_irq(&phba->hbalock);
1174 	phba->fcf.fcf_flag |= FCF_REGISTERED;
1175 	spin_unlock_irq(&phba->hbalock);
1176 
1177 	/* If there is a pending FCoE event, restart FCF table scan. */
1178 	if ((!(phba->hba_flag & FCF_RR_INPROG)) &&
1179 		lpfc_check_pending_fcoe_event(phba, LPFC_UNREG_FCF))
1180 		goto fail_out;
1181 
1182 	/* Mark successful completion of FCF table scan */
1183 	spin_lock_irq(&phba->hbalock);
1184 	phba->fcf.fcf_flag |= (FCF_SCAN_DONE | FCF_IN_USE);
1185 	phba->hba_flag &= ~FCF_TS_INPROG;
1186 	if (vport->port_state != LPFC_FLOGI) {
1187 		phba->hba_flag |= FCF_RR_INPROG;
1188 		spin_unlock_irq(&phba->hbalock);
1189 		lpfc_issue_init_vfi(vport);
1190 		goto out;
1191 	}
1192 	spin_unlock_irq(&phba->hbalock);
1193 	goto out;
1194 
1195 fail_out:
1196 	spin_lock_irq(&phba->hbalock);
1197 	phba->hba_flag &= ~FCF_RR_INPROG;
1198 	spin_unlock_irq(&phba->hbalock);
1199 out:
1200 	mempool_free(mboxq, phba->mbox_mem_pool);
1201 }
1202 
1203 /**
1204  * lpfc_fab_name_match - Check if the fcf fabric name match.
1205  * @fab_name: pointer to fabric name.
1206  * @new_fcf_record: pointer to fcf record.
1207  *
1208  * This routine compare the fcf record's fabric name with provided
1209  * fabric name. If the fabric name are identical this function
1210  * returns 1 else return 0.
1211  **/
1212 static uint32_t
1213 lpfc_fab_name_match(uint8_t *fab_name, struct fcf_record *new_fcf_record)
1214 {
1215 	if (fab_name[0] != bf_get(lpfc_fcf_record_fab_name_0, new_fcf_record))
1216 		return 0;
1217 	if (fab_name[1] != bf_get(lpfc_fcf_record_fab_name_1, new_fcf_record))
1218 		return 0;
1219 	if (fab_name[2] != bf_get(lpfc_fcf_record_fab_name_2, new_fcf_record))
1220 		return 0;
1221 	if (fab_name[3] != bf_get(lpfc_fcf_record_fab_name_3, new_fcf_record))
1222 		return 0;
1223 	if (fab_name[4] != bf_get(lpfc_fcf_record_fab_name_4, new_fcf_record))
1224 		return 0;
1225 	if (fab_name[5] != bf_get(lpfc_fcf_record_fab_name_5, new_fcf_record))
1226 		return 0;
1227 	if (fab_name[6] != bf_get(lpfc_fcf_record_fab_name_6, new_fcf_record))
1228 		return 0;
1229 	if (fab_name[7] != bf_get(lpfc_fcf_record_fab_name_7, new_fcf_record))
1230 		return 0;
1231 	return 1;
1232 }
1233 
1234 /**
1235  * lpfc_sw_name_match - Check if the fcf switch name match.
1236  * @fab_name: pointer to fabric name.
1237  * @new_fcf_record: pointer to fcf record.
1238  *
1239  * This routine compare the fcf record's switch name with provided
1240  * switch name. If the switch name are identical this function
1241  * returns 1 else return 0.
1242  **/
1243 static uint32_t
1244 lpfc_sw_name_match(uint8_t *sw_name, struct fcf_record *new_fcf_record)
1245 {
1246 	if (sw_name[0] != bf_get(lpfc_fcf_record_switch_name_0, new_fcf_record))
1247 		return 0;
1248 	if (sw_name[1] != bf_get(lpfc_fcf_record_switch_name_1, new_fcf_record))
1249 		return 0;
1250 	if (sw_name[2] != bf_get(lpfc_fcf_record_switch_name_2, new_fcf_record))
1251 		return 0;
1252 	if (sw_name[3] != bf_get(lpfc_fcf_record_switch_name_3, new_fcf_record))
1253 		return 0;
1254 	if (sw_name[4] != bf_get(lpfc_fcf_record_switch_name_4, new_fcf_record))
1255 		return 0;
1256 	if (sw_name[5] != bf_get(lpfc_fcf_record_switch_name_5, new_fcf_record))
1257 		return 0;
1258 	if (sw_name[6] != bf_get(lpfc_fcf_record_switch_name_6, new_fcf_record))
1259 		return 0;
1260 	if (sw_name[7] != bf_get(lpfc_fcf_record_switch_name_7, new_fcf_record))
1261 		return 0;
1262 	return 1;
1263 }
1264 
1265 /**
1266  * lpfc_mac_addr_match - Check if the fcf mac address match.
1267  * @mac_addr: pointer to mac address.
1268  * @new_fcf_record: pointer to fcf record.
1269  *
1270  * This routine compare the fcf record's mac address with HBA's
1271  * FCF mac address. If the mac addresses are identical this function
1272  * returns 1 else return 0.
1273  **/
1274 static uint32_t
1275 lpfc_mac_addr_match(uint8_t *mac_addr, struct fcf_record *new_fcf_record)
1276 {
1277 	if (mac_addr[0] != bf_get(lpfc_fcf_record_mac_0, new_fcf_record))
1278 		return 0;
1279 	if (mac_addr[1] != bf_get(lpfc_fcf_record_mac_1, new_fcf_record))
1280 		return 0;
1281 	if (mac_addr[2] != bf_get(lpfc_fcf_record_mac_2, new_fcf_record))
1282 		return 0;
1283 	if (mac_addr[3] != bf_get(lpfc_fcf_record_mac_3, new_fcf_record))
1284 		return 0;
1285 	if (mac_addr[4] != bf_get(lpfc_fcf_record_mac_4, new_fcf_record))
1286 		return 0;
1287 	if (mac_addr[5] != bf_get(lpfc_fcf_record_mac_5, new_fcf_record))
1288 		return 0;
1289 	return 1;
1290 }
1291 
1292 static bool
1293 lpfc_vlan_id_match(uint16_t curr_vlan_id, uint16_t new_vlan_id)
1294 {
1295 	return (curr_vlan_id == new_vlan_id);
1296 }
1297 
1298 /**
1299  * lpfc_update_fcf_record - Update driver fcf record
1300  * __lpfc_update_fcf_record_pri - update the lpfc_fcf_pri record.
1301  * @phba: pointer to lpfc hba data structure.
1302  * @fcf_index: Index for the lpfc_fcf_record.
1303  * @new_fcf_record: pointer to hba fcf record.
1304  *
1305  * This routine updates the driver FCF priority record from the new HBA FCF
1306  * record. This routine is called with the host lock held.
1307  **/
1308 static void
1309 __lpfc_update_fcf_record_pri(struct lpfc_hba *phba, uint16_t fcf_index,
1310 				 struct fcf_record *new_fcf_record
1311 				 )
1312 {
1313 	struct lpfc_fcf_pri *fcf_pri;
1314 
1315 	fcf_pri = &phba->fcf.fcf_pri[fcf_index];
1316 	fcf_pri->fcf_rec.fcf_index = fcf_index;
1317 	/* FCF record priority */
1318 	fcf_pri->fcf_rec.priority = new_fcf_record->fip_priority;
1319 
1320 }
1321 
1322 /**
1323  * lpfc_copy_fcf_record - Copy fcf information to lpfc_hba.
1324  * @fcf: pointer to driver fcf record.
1325  * @new_fcf_record: pointer to fcf record.
1326  *
1327  * This routine copies the FCF information from the FCF
1328  * record to lpfc_hba data structure.
1329  **/
1330 static void
1331 lpfc_copy_fcf_record(struct lpfc_fcf_rec *fcf_rec,
1332 		     struct fcf_record *new_fcf_record)
1333 {
1334 	/* Fabric name */
1335 	fcf_rec->fabric_name[0] =
1336 		bf_get(lpfc_fcf_record_fab_name_0, new_fcf_record);
1337 	fcf_rec->fabric_name[1] =
1338 		bf_get(lpfc_fcf_record_fab_name_1, new_fcf_record);
1339 	fcf_rec->fabric_name[2] =
1340 		bf_get(lpfc_fcf_record_fab_name_2, new_fcf_record);
1341 	fcf_rec->fabric_name[3] =
1342 		bf_get(lpfc_fcf_record_fab_name_3, new_fcf_record);
1343 	fcf_rec->fabric_name[4] =
1344 		bf_get(lpfc_fcf_record_fab_name_4, new_fcf_record);
1345 	fcf_rec->fabric_name[5] =
1346 		bf_get(lpfc_fcf_record_fab_name_5, new_fcf_record);
1347 	fcf_rec->fabric_name[6] =
1348 		bf_get(lpfc_fcf_record_fab_name_6, new_fcf_record);
1349 	fcf_rec->fabric_name[7] =
1350 		bf_get(lpfc_fcf_record_fab_name_7, new_fcf_record);
1351 	/* Mac address */
1352 	fcf_rec->mac_addr[0] = bf_get(lpfc_fcf_record_mac_0, new_fcf_record);
1353 	fcf_rec->mac_addr[1] = bf_get(lpfc_fcf_record_mac_1, new_fcf_record);
1354 	fcf_rec->mac_addr[2] = bf_get(lpfc_fcf_record_mac_2, new_fcf_record);
1355 	fcf_rec->mac_addr[3] = bf_get(lpfc_fcf_record_mac_3, new_fcf_record);
1356 	fcf_rec->mac_addr[4] = bf_get(lpfc_fcf_record_mac_4, new_fcf_record);
1357 	fcf_rec->mac_addr[5] = bf_get(lpfc_fcf_record_mac_5, new_fcf_record);
1358 	/* FCF record index */
1359 	fcf_rec->fcf_indx = bf_get(lpfc_fcf_record_fcf_index, new_fcf_record);
1360 	/* FCF record priority */
1361 	fcf_rec->priority = new_fcf_record->fip_priority;
1362 	/* Switch name */
1363 	fcf_rec->switch_name[0] =
1364 		bf_get(lpfc_fcf_record_switch_name_0, new_fcf_record);
1365 	fcf_rec->switch_name[1] =
1366 		bf_get(lpfc_fcf_record_switch_name_1, new_fcf_record);
1367 	fcf_rec->switch_name[2] =
1368 		bf_get(lpfc_fcf_record_switch_name_2, new_fcf_record);
1369 	fcf_rec->switch_name[3] =
1370 		bf_get(lpfc_fcf_record_switch_name_3, new_fcf_record);
1371 	fcf_rec->switch_name[4] =
1372 		bf_get(lpfc_fcf_record_switch_name_4, new_fcf_record);
1373 	fcf_rec->switch_name[5] =
1374 		bf_get(lpfc_fcf_record_switch_name_5, new_fcf_record);
1375 	fcf_rec->switch_name[6] =
1376 		bf_get(lpfc_fcf_record_switch_name_6, new_fcf_record);
1377 	fcf_rec->switch_name[7] =
1378 		bf_get(lpfc_fcf_record_switch_name_7, new_fcf_record);
1379 }
1380 
1381 /**
1382  * lpfc_update_fcf_record - Update driver fcf record
1383  * @phba: pointer to lpfc hba data structure.
1384  * @fcf_rec: pointer to driver fcf record.
1385  * @new_fcf_record: pointer to hba fcf record.
1386  * @addr_mode: address mode to be set to the driver fcf record.
1387  * @vlan_id: vlan tag to be set to the driver fcf record.
1388  * @flag: flag bits to be set to the driver fcf record.
1389  *
1390  * This routine updates the driver FCF record from the new HBA FCF record
1391  * together with the address mode, vlan_id, and other informations. This
1392  * routine is called with the host lock held.
1393  **/
1394 static void
1395 __lpfc_update_fcf_record(struct lpfc_hba *phba, struct lpfc_fcf_rec *fcf_rec,
1396 		       struct fcf_record *new_fcf_record, uint32_t addr_mode,
1397 		       uint16_t vlan_id, uint32_t flag)
1398 {
1399 	/* Copy the fields from the HBA's FCF record */
1400 	lpfc_copy_fcf_record(fcf_rec, new_fcf_record);
1401 	/* Update other fields of driver FCF record */
1402 	fcf_rec->addr_mode = addr_mode;
1403 	fcf_rec->vlan_id = vlan_id;
1404 	fcf_rec->flag |= (flag | RECORD_VALID);
1405 	__lpfc_update_fcf_record_pri(phba,
1406 		bf_get(lpfc_fcf_record_fcf_index, new_fcf_record),
1407 				 new_fcf_record);
1408 }
1409 
1410 /**
1411  * lpfc_register_fcf - Register the FCF with hba.
1412  * @phba: pointer to lpfc hba data structure.
1413  *
1414  * This routine issues a register fcfi mailbox command to register
1415  * the fcf with HBA.
1416  **/
1417 static void
1418 lpfc_register_fcf(struct lpfc_hba *phba)
1419 {
1420 	LPFC_MBOXQ_t *fcf_mbxq;
1421 	int rc;
1422 
1423 	spin_lock_irq(&phba->hbalock);
1424 	/* If the FCF is not available do nothing. */
1425 	if (!(phba->fcf.fcf_flag & FCF_AVAILABLE)) {
1426 		phba->hba_flag &= ~(FCF_TS_INPROG | FCF_RR_INPROG);
1427 		spin_unlock_irq(&phba->hbalock);
1428 		return;
1429 	}
1430 
1431 	/* The FCF is already registered, start discovery */
1432 	if (phba->fcf.fcf_flag & FCF_REGISTERED) {
1433 		phba->fcf.fcf_flag |= (FCF_SCAN_DONE | FCF_IN_USE);
1434 		phba->hba_flag &= ~FCF_TS_INPROG;
1435 		if (phba->pport->port_state != LPFC_FLOGI &&
1436 		    phba->pport->fc_flag & FC_FABRIC) {
1437 			phba->hba_flag |= FCF_RR_INPROG;
1438 			spin_unlock_irq(&phba->hbalock);
1439 			lpfc_initial_flogi(phba->pport);
1440 			return;
1441 		}
1442 		spin_unlock_irq(&phba->hbalock);
1443 		return;
1444 	}
1445 	spin_unlock_irq(&phba->hbalock);
1446 
1447 	fcf_mbxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1448 	if (!fcf_mbxq) {
1449 		spin_lock_irq(&phba->hbalock);
1450 		phba->hba_flag &= ~(FCF_TS_INPROG | FCF_RR_INPROG);
1451 		spin_unlock_irq(&phba->hbalock);
1452 		return;
1453 	}
1454 
1455 	lpfc_reg_fcfi(phba, fcf_mbxq);
1456 	fcf_mbxq->vport = phba->pport;
1457 	fcf_mbxq->mbox_cmpl = lpfc_mbx_cmpl_reg_fcfi;
1458 	rc = lpfc_sli_issue_mbox(phba, fcf_mbxq, MBX_NOWAIT);
1459 	if (rc == MBX_NOT_FINISHED) {
1460 		spin_lock_irq(&phba->hbalock);
1461 		phba->hba_flag &= ~(FCF_TS_INPROG | FCF_RR_INPROG);
1462 		spin_unlock_irq(&phba->hbalock);
1463 		mempool_free(fcf_mbxq, phba->mbox_mem_pool);
1464 	}
1465 
1466 	return;
1467 }
1468 
1469 /**
1470  * lpfc_match_fcf_conn_list - Check if the FCF record can be used for discovery.
1471  * @phba: pointer to lpfc hba data structure.
1472  * @new_fcf_record: pointer to fcf record.
1473  * @boot_flag: Indicates if this record used by boot bios.
1474  * @addr_mode: The address mode to be used by this FCF
1475  * @vlan_id: The vlan id to be used as vlan tagging by this FCF.
1476  *
1477  * This routine compare the fcf record with connect list obtained from the
1478  * config region to decide if this FCF can be used for SAN discovery. It returns
1479  * 1 if this record can be used for SAN discovery else return zero. If this FCF
1480  * record can be used for SAN discovery, the boot_flag will indicate if this FCF
1481  * is used by boot bios and addr_mode will indicate the addressing mode to be
1482  * used for this FCF when the function returns.
1483  * If the FCF record need to be used with a particular vlan id, the vlan is
1484  * set in the vlan_id on return of the function. If not VLAN tagging need to
1485  * be used with the FCF vlan_id will be set to LPFC_FCOE_NULL_VID;
1486  **/
1487 static int
1488 lpfc_match_fcf_conn_list(struct lpfc_hba *phba,
1489 			struct fcf_record *new_fcf_record,
1490 			uint32_t *boot_flag, uint32_t *addr_mode,
1491 			uint16_t *vlan_id)
1492 {
1493 	struct lpfc_fcf_conn_entry *conn_entry;
1494 	int i, j, fcf_vlan_id = 0;
1495 
1496 	/* Find the lowest VLAN id in the FCF record */
1497 	for (i = 0; i < 512; i++) {
1498 		if (new_fcf_record->vlan_bitmap[i]) {
1499 			fcf_vlan_id = i * 8;
1500 			j = 0;
1501 			while (!((new_fcf_record->vlan_bitmap[i] >> j) & 1)) {
1502 				j++;
1503 				fcf_vlan_id++;
1504 			}
1505 			break;
1506 		}
1507 	}
1508 
1509 	/* FCF not valid/available or solicitation in progress */
1510 	if (!bf_get(lpfc_fcf_record_fcf_avail, new_fcf_record) ||
1511 	    !bf_get(lpfc_fcf_record_fcf_valid, new_fcf_record) ||
1512 	    bf_get(lpfc_fcf_record_fcf_sol, new_fcf_record))
1513 		return 0;
1514 
1515 	if (!(phba->hba_flag & HBA_FIP_SUPPORT)) {
1516 		*boot_flag = 0;
1517 		*addr_mode = bf_get(lpfc_fcf_record_mac_addr_prov,
1518 				new_fcf_record);
1519 		if (phba->valid_vlan)
1520 			*vlan_id = phba->vlan_id;
1521 		else
1522 			*vlan_id = LPFC_FCOE_NULL_VID;
1523 		return 1;
1524 	}
1525 
1526 	/*
1527 	 * If there are no FCF connection table entry, driver connect to all
1528 	 * FCFs.
1529 	 */
1530 	if (list_empty(&phba->fcf_conn_rec_list)) {
1531 		*boot_flag = 0;
1532 		*addr_mode = bf_get(lpfc_fcf_record_mac_addr_prov,
1533 			new_fcf_record);
1534 
1535 		/*
1536 		 * When there are no FCF connect entries, use driver's default
1537 		 * addressing mode - FPMA.
1538 		 */
1539 		if (*addr_mode & LPFC_FCF_FPMA)
1540 			*addr_mode = LPFC_FCF_FPMA;
1541 
1542 		/* If FCF record report a vlan id use that vlan id */
1543 		if (fcf_vlan_id)
1544 			*vlan_id = fcf_vlan_id;
1545 		else
1546 			*vlan_id = LPFC_FCOE_NULL_VID;
1547 		return 1;
1548 	}
1549 
1550 	list_for_each_entry(conn_entry,
1551 			    &phba->fcf_conn_rec_list, list) {
1552 		if (!(conn_entry->conn_rec.flags & FCFCNCT_VALID))
1553 			continue;
1554 
1555 		if ((conn_entry->conn_rec.flags & FCFCNCT_FBNM_VALID) &&
1556 			!lpfc_fab_name_match(conn_entry->conn_rec.fabric_name,
1557 					     new_fcf_record))
1558 			continue;
1559 		if ((conn_entry->conn_rec.flags & FCFCNCT_SWNM_VALID) &&
1560 			!lpfc_sw_name_match(conn_entry->conn_rec.switch_name,
1561 					    new_fcf_record))
1562 			continue;
1563 		if (conn_entry->conn_rec.flags & FCFCNCT_VLAN_VALID) {
1564 			/*
1565 			 * If the vlan bit map does not have the bit set for the
1566 			 * vlan id to be used, then it is not a match.
1567 			 */
1568 			if (!(new_fcf_record->vlan_bitmap
1569 				[conn_entry->conn_rec.vlan_tag / 8] &
1570 				(1 << (conn_entry->conn_rec.vlan_tag % 8))))
1571 				continue;
1572 		}
1573 
1574 		/*
1575 		 * If connection record does not support any addressing mode,
1576 		 * skip the FCF record.
1577 		 */
1578 		if (!(bf_get(lpfc_fcf_record_mac_addr_prov, new_fcf_record)
1579 			& (LPFC_FCF_FPMA | LPFC_FCF_SPMA)))
1580 			continue;
1581 
1582 		/*
1583 		 * Check if the connection record specifies a required
1584 		 * addressing mode.
1585 		 */
1586 		if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) &&
1587 			!(conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED)) {
1588 
1589 			/*
1590 			 * If SPMA required but FCF not support this continue.
1591 			 */
1592 			if ((conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) &&
1593 				!(bf_get(lpfc_fcf_record_mac_addr_prov,
1594 					new_fcf_record) & LPFC_FCF_SPMA))
1595 				continue;
1596 
1597 			/*
1598 			 * If FPMA required but FCF not support this continue.
1599 			 */
1600 			if (!(conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) &&
1601 				!(bf_get(lpfc_fcf_record_mac_addr_prov,
1602 				new_fcf_record) & LPFC_FCF_FPMA))
1603 				continue;
1604 		}
1605 
1606 		/*
1607 		 * This fcf record matches filtering criteria.
1608 		 */
1609 		if (conn_entry->conn_rec.flags & FCFCNCT_BOOT)
1610 			*boot_flag = 1;
1611 		else
1612 			*boot_flag = 0;
1613 
1614 		/*
1615 		 * If user did not specify any addressing mode, or if the
1616 		 * preferred addressing mode specified by user is not supported
1617 		 * by FCF, allow fabric to pick the addressing mode.
1618 		 */
1619 		*addr_mode = bf_get(lpfc_fcf_record_mac_addr_prov,
1620 				new_fcf_record);
1621 		/*
1622 		 * If the user specified a required address mode, assign that
1623 		 * address mode
1624 		 */
1625 		if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) &&
1626 			(!(conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED)))
1627 			*addr_mode = (conn_entry->conn_rec.flags &
1628 				FCFCNCT_AM_SPMA) ?
1629 				LPFC_FCF_SPMA : LPFC_FCF_FPMA;
1630 		/*
1631 		 * If the user specified a preferred address mode, use the
1632 		 * addr mode only if FCF support the addr_mode.
1633 		 */
1634 		else if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) &&
1635 			(conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED) &&
1636 			(conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) &&
1637 			(*addr_mode & LPFC_FCF_SPMA))
1638 				*addr_mode = LPFC_FCF_SPMA;
1639 		else if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) &&
1640 			(conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED) &&
1641 			!(conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) &&
1642 			(*addr_mode & LPFC_FCF_FPMA))
1643 				*addr_mode = LPFC_FCF_FPMA;
1644 
1645 		/* If matching connect list has a vlan id, use it */
1646 		if (conn_entry->conn_rec.flags & FCFCNCT_VLAN_VALID)
1647 			*vlan_id = conn_entry->conn_rec.vlan_tag;
1648 		/*
1649 		 * If no vlan id is specified in connect list, use the vlan id
1650 		 * in the FCF record
1651 		 */
1652 		else if (fcf_vlan_id)
1653 			*vlan_id = fcf_vlan_id;
1654 		else
1655 			*vlan_id = LPFC_FCOE_NULL_VID;
1656 
1657 		return 1;
1658 	}
1659 
1660 	return 0;
1661 }
1662 
1663 /**
1664  * lpfc_check_pending_fcoe_event - Check if there is pending fcoe event.
1665  * @phba: pointer to lpfc hba data structure.
1666  * @unreg_fcf: Unregister FCF if FCF table need to be re-scaned.
1667  *
1668  * This function check if there is any fcoe event pending while driver
1669  * scan FCF entries. If there is any pending event, it will restart the
1670  * FCF saning and return 1 else return 0.
1671  */
1672 int
1673 lpfc_check_pending_fcoe_event(struct lpfc_hba *phba, uint8_t unreg_fcf)
1674 {
1675 	/*
1676 	 * If the Link is up and no FCoE events while in the
1677 	 * FCF discovery, no need to restart FCF discovery.
1678 	 */
1679 	if ((phba->link_state  >= LPFC_LINK_UP) &&
1680 	    (phba->fcoe_eventtag == phba->fcoe_eventtag_at_fcf_scan))
1681 		return 0;
1682 
1683 	lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
1684 			"2768 Pending link or FCF event during current "
1685 			"handling of the previous event: link_state:x%x, "
1686 			"evt_tag_at_scan:x%x, evt_tag_current:x%x\n",
1687 			phba->link_state, phba->fcoe_eventtag_at_fcf_scan,
1688 			phba->fcoe_eventtag);
1689 
1690 	spin_lock_irq(&phba->hbalock);
1691 	phba->fcf.fcf_flag &= ~FCF_AVAILABLE;
1692 	spin_unlock_irq(&phba->hbalock);
1693 
1694 	if (phba->link_state >= LPFC_LINK_UP) {
1695 		lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY,
1696 				"2780 Restart FCF table scan due to "
1697 				"pending FCF event:evt_tag_at_scan:x%x, "
1698 				"evt_tag_current:x%x\n",
1699 				phba->fcoe_eventtag_at_fcf_scan,
1700 				phba->fcoe_eventtag);
1701 		lpfc_sli4_fcf_scan_read_fcf_rec(phba, LPFC_FCOE_FCF_GET_FIRST);
1702 	} else {
1703 		/*
1704 		 * Do not continue FCF discovery and clear FCF_TS_INPROG
1705 		 * flag
1706 		 */
1707 		lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY,
1708 				"2833 Stop FCF discovery process due to link "
1709 				"state change (x%x)\n", phba->link_state);
1710 		spin_lock_irq(&phba->hbalock);
1711 		phba->hba_flag &= ~(FCF_TS_INPROG | FCF_RR_INPROG);
1712 		phba->fcf.fcf_flag &= ~(FCF_REDISC_FOV | FCF_DISCOVERY);
1713 		spin_unlock_irq(&phba->hbalock);
1714 	}
1715 
1716 	/* Unregister the currently registered FCF if required */
1717 	if (unreg_fcf) {
1718 		spin_lock_irq(&phba->hbalock);
1719 		phba->fcf.fcf_flag &= ~FCF_REGISTERED;
1720 		spin_unlock_irq(&phba->hbalock);
1721 		lpfc_sli4_unregister_fcf(phba);
1722 	}
1723 	return 1;
1724 }
1725 
1726 /**
1727  * lpfc_sli4_new_fcf_random_select - Randomly select an eligible new fcf record
1728  * @phba: pointer to lpfc hba data structure.
1729  * @fcf_cnt: number of eligible fcf record seen so far.
1730  *
1731  * This function makes an running random selection decision on FCF record to
1732  * use through a sequence of @fcf_cnt eligible FCF records with equal
1733  * probability. To perform integer manunipulation of random numbers with
1734  * size unit32_t, the lower 16 bits of the 32-bit random number returned
1735  * from prandom_u32() are taken as the random random number generated.
1736  *
1737  * Returns true when outcome is for the newly read FCF record should be
1738  * chosen; otherwise, return false when outcome is for keeping the previously
1739  * chosen FCF record.
1740  **/
1741 static bool
1742 lpfc_sli4_new_fcf_random_select(struct lpfc_hba *phba, uint32_t fcf_cnt)
1743 {
1744 	uint32_t rand_num;
1745 
1746 	/* Get 16-bit uniform random number */
1747 	rand_num = 0xFFFF & prandom_u32();
1748 
1749 	/* Decision with probability 1/fcf_cnt */
1750 	if ((fcf_cnt * rand_num) < 0xFFFF)
1751 		return true;
1752 	else
1753 		return false;
1754 }
1755 
1756 /**
1757  * lpfc_sli4_fcf_rec_mbox_parse - Parse read_fcf mbox command.
1758  * @phba: pointer to lpfc hba data structure.
1759  * @mboxq: pointer to mailbox object.
1760  * @next_fcf_index: pointer to holder of next fcf index.
1761  *
1762  * This routine parses the non-embedded fcf mailbox command by performing the
1763  * necessarily error checking, non-embedded read FCF record mailbox command
1764  * SGE parsing, and endianness swapping.
1765  *
1766  * Returns the pointer to the new FCF record in the non-embedded mailbox
1767  * command DMA memory if successfully, other NULL.
1768  */
1769 static struct fcf_record *
1770 lpfc_sli4_fcf_rec_mbox_parse(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq,
1771 			     uint16_t *next_fcf_index)
1772 {
1773 	void *virt_addr;
1774 	dma_addr_t phys_addr;
1775 	struct lpfc_mbx_sge sge;
1776 	struct lpfc_mbx_read_fcf_tbl *read_fcf;
1777 	uint32_t shdr_status, shdr_add_status;
1778 	union lpfc_sli4_cfg_shdr *shdr;
1779 	struct fcf_record *new_fcf_record;
1780 
1781 	/* Get the first SGE entry from the non-embedded DMA memory. This
1782 	 * routine only uses a single SGE.
1783 	 */
1784 	lpfc_sli4_mbx_sge_get(mboxq, 0, &sge);
1785 	phys_addr = getPaddr(sge.pa_hi, sge.pa_lo);
1786 	if (unlikely(!mboxq->sge_array)) {
1787 		lpfc_printf_log(phba, KERN_ERR, LOG_MBOX,
1788 				"2524 Failed to get the non-embedded SGE "
1789 				"virtual address\n");
1790 		return NULL;
1791 	}
1792 	virt_addr = mboxq->sge_array->addr[0];
1793 
1794 	shdr = (union lpfc_sli4_cfg_shdr *)virt_addr;
1795 	lpfc_sli_pcimem_bcopy(shdr, shdr,
1796 			      sizeof(union lpfc_sli4_cfg_shdr));
1797 	shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
1798 	shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response);
1799 	if (shdr_status || shdr_add_status) {
1800 		if (shdr_status == STATUS_FCF_TABLE_EMPTY)
1801 			lpfc_printf_log(phba, KERN_ERR, LOG_FIP,
1802 					"2726 READ_FCF_RECORD Indicates empty "
1803 					"FCF table.\n");
1804 		else
1805 			lpfc_printf_log(phba, KERN_ERR, LOG_FIP,
1806 					"2521 READ_FCF_RECORD mailbox failed "
1807 					"with status x%x add_status x%x, "
1808 					"mbx\n", shdr_status, shdr_add_status);
1809 		return NULL;
1810 	}
1811 
1812 	/* Interpreting the returned information of the FCF record */
1813 	read_fcf = (struct lpfc_mbx_read_fcf_tbl *)virt_addr;
1814 	lpfc_sli_pcimem_bcopy(read_fcf, read_fcf,
1815 			      sizeof(struct lpfc_mbx_read_fcf_tbl));
1816 	*next_fcf_index = bf_get(lpfc_mbx_read_fcf_tbl_nxt_vindx, read_fcf);
1817 	new_fcf_record = (struct fcf_record *)(virt_addr +
1818 			  sizeof(struct lpfc_mbx_read_fcf_tbl));
1819 	lpfc_sli_pcimem_bcopy(new_fcf_record, new_fcf_record,
1820 				offsetof(struct fcf_record, vlan_bitmap));
1821 	new_fcf_record->word137 = le32_to_cpu(new_fcf_record->word137);
1822 	new_fcf_record->word138 = le32_to_cpu(new_fcf_record->word138);
1823 
1824 	return new_fcf_record;
1825 }
1826 
1827 /**
1828  * lpfc_sli4_log_fcf_record_info - Log the information of a fcf record
1829  * @phba: pointer to lpfc hba data structure.
1830  * @fcf_record: pointer to the fcf record.
1831  * @vlan_id: the lowest vlan identifier associated to this fcf record.
1832  * @next_fcf_index: the index to the next fcf record in hba's fcf table.
1833  *
1834  * This routine logs the detailed FCF record if the LOG_FIP loggin is
1835  * enabled.
1836  **/
1837 static void
1838 lpfc_sli4_log_fcf_record_info(struct lpfc_hba *phba,
1839 			      struct fcf_record *fcf_record,
1840 			      uint16_t vlan_id,
1841 			      uint16_t next_fcf_index)
1842 {
1843 	lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
1844 			"2764 READ_FCF_RECORD:\n"
1845 			"\tFCF_Index     : x%x\n"
1846 			"\tFCF_Avail     : x%x\n"
1847 			"\tFCF_Valid     : x%x\n"
1848 			"\tFCF_SOL       : x%x\n"
1849 			"\tFIP_Priority  : x%x\n"
1850 			"\tMAC_Provider  : x%x\n"
1851 			"\tLowest VLANID : x%x\n"
1852 			"\tFCF_MAC Addr  : x%x:%x:%x:%x:%x:%x\n"
1853 			"\tFabric_Name   : x%x:%x:%x:%x:%x:%x:%x:%x\n"
1854 			"\tSwitch_Name   : x%x:%x:%x:%x:%x:%x:%x:%x\n"
1855 			"\tNext_FCF_Index: x%x\n",
1856 			bf_get(lpfc_fcf_record_fcf_index, fcf_record),
1857 			bf_get(lpfc_fcf_record_fcf_avail, fcf_record),
1858 			bf_get(lpfc_fcf_record_fcf_valid, fcf_record),
1859 			bf_get(lpfc_fcf_record_fcf_sol, fcf_record),
1860 			fcf_record->fip_priority,
1861 			bf_get(lpfc_fcf_record_mac_addr_prov, fcf_record),
1862 			vlan_id,
1863 			bf_get(lpfc_fcf_record_mac_0, fcf_record),
1864 			bf_get(lpfc_fcf_record_mac_1, fcf_record),
1865 			bf_get(lpfc_fcf_record_mac_2, fcf_record),
1866 			bf_get(lpfc_fcf_record_mac_3, fcf_record),
1867 			bf_get(lpfc_fcf_record_mac_4, fcf_record),
1868 			bf_get(lpfc_fcf_record_mac_5, fcf_record),
1869 			bf_get(lpfc_fcf_record_fab_name_0, fcf_record),
1870 			bf_get(lpfc_fcf_record_fab_name_1, fcf_record),
1871 			bf_get(lpfc_fcf_record_fab_name_2, fcf_record),
1872 			bf_get(lpfc_fcf_record_fab_name_3, fcf_record),
1873 			bf_get(lpfc_fcf_record_fab_name_4, fcf_record),
1874 			bf_get(lpfc_fcf_record_fab_name_5, fcf_record),
1875 			bf_get(lpfc_fcf_record_fab_name_6, fcf_record),
1876 			bf_get(lpfc_fcf_record_fab_name_7, fcf_record),
1877 			bf_get(lpfc_fcf_record_switch_name_0, fcf_record),
1878 			bf_get(lpfc_fcf_record_switch_name_1, fcf_record),
1879 			bf_get(lpfc_fcf_record_switch_name_2, fcf_record),
1880 			bf_get(lpfc_fcf_record_switch_name_3, fcf_record),
1881 			bf_get(lpfc_fcf_record_switch_name_4, fcf_record),
1882 			bf_get(lpfc_fcf_record_switch_name_5, fcf_record),
1883 			bf_get(lpfc_fcf_record_switch_name_6, fcf_record),
1884 			bf_get(lpfc_fcf_record_switch_name_7, fcf_record),
1885 			next_fcf_index);
1886 }
1887 
1888 /**
1889  lpfc_sli4_fcf_record_match - testing new FCF record for matching existing FCF
1890  * @phba: pointer to lpfc hba data structure.
1891  * @fcf_rec: pointer to an existing FCF record.
1892  * @new_fcf_record: pointer to a new FCF record.
1893  * @new_vlan_id: vlan id from the new FCF record.
1894  *
1895  * This function performs matching test of a new FCF record against an existing
1896  * FCF record. If the new_vlan_id passed in is LPFC_FCOE_IGNORE_VID, vlan id
1897  * will not be used as part of the FCF record matching criteria.
1898  *
1899  * Returns true if all the fields matching, otherwise returns false.
1900  */
1901 static bool
1902 lpfc_sli4_fcf_record_match(struct lpfc_hba *phba,
1903 			   struct lpfc_fcf_rec *fcf_rec,
1904 			   struct fcf_record *new_fcf_record,
1905 			   uint16_t new_vlan_id)
1906 {
1907 	if (new_vlan_id != LPFC_FCOE_IGNORE_VID)
1908 		if (!lpfc_vlan_id_match(fcf_rec->vlan_id, new_vlan_id))
1909 			return false;
1910 	if (!lpfc_mac_addr_match(fcf_rec->mac_addr, new_fcf_record))
1911 		return false;
1912 	if (!lpfc_sw_name_match(fcf_rec->switch_name, new_fcf_record))
1913 		return false;
1914 	if (!lpfc_fab_name_match(fcf_rec->fabric_name, new_fcf_record))
1915 		return false;
1916 	if (fcf_rec->priority != new_fcf_record->fip_priority)
1917 		return false;
1918 	return true;
1919 }
1920 
1921 /**
1922  * lpfc_sli4_fcf_rr_next_proc - processing next roundrobin fcf
1923  * @vport: Pointer to vport object.
1924  * @fcf_index: index to next fcf.
1925  *
1926  * This function processing the roundrobin fcf failover to next fcf index.
1927  * When this function is invoked, there will be a current fcf registered
1928  * for flogi.
1929  * Return: 0 for continue retrying flogi on currently registered fcf;
1930  *         1 for stop flogi on currently registered fcf;
1931  */
1932 int lpfc_sli4_fcf_rr_next_proc(struct lpfc_vport *vport, uint16_t fcf_index)
1933 {
1934 	struct lpfc_hba *phba = vport->phba;
1935 	int rc;
1936 
1937 	if (fcf_index == LPFC_FCOE_FCF_NEXT_NONE) {
1938 		spin_lock_irq(&phba->hbalock);
1939 		if (phba->hba_flag & HBA_DEVLOSS_TMO) {
1940 			spin_unlock_irq(&phba->hbalock);
1941 			lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
1942 					"2872 Devloss tmo with no eligible "
1943 					"FCF, unregister in-use FCF (x%x) "
1944 					"and rescan FCF table\n",
1945 					phba->fcf.current_rec.fcf_indx);
1946 			lpfc_unregister_fcf_rescan(phba);
1947 			goto stop_flogi_current_fcf;
1948 		}
1949 		/* Mark the end to FLOGI roundrobin failover */
1950 		phba->hba_flag &= ~FCF_RR_INPROG;
1951 		/* Allow action to new fcf asynchronous event */
1952 		phba->fcf.fcf_flag &= ~(FCF_AVAILABLE | FCF_SCAN_DONE);
1953 		spin_unlock_irq(&phba->hbalock);
1954 		lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
1955 				"2865 No FCF available, stop roundrobin FCF "
1956 				"failover and change port state:x%x/x%x\n",
1957 				phba->pport->port_state, LPFC_VPORT_UNKNOWN);
1958 		phba->pport->port_state = LPFC_VPORT_UNKNOWN;
1959 		goto stop_flogi_current_fcf;
1960 	} else {
1961 		lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_ELS,
1962 				"2794 Try FLOGI roundrobin FCF failover to "
1963 				"(x%x)\n", fcf_index);
1964 		rc = lpfc_sli4_fcf_rr_read_fcf_rec(phba, fcf_index);
1965 		if (rc)
1966 			lpfc_printf_log(phba, KERN_WARNING, LOG_FIP | LOG_ELS,
1967 					"2761 FLOGI roundrobin FCF failover "
1968 					"failed (rc:x%x) to read FCF (x%x)\n",
1969 					rc, phba->fcf.current_rec.fcf_indx);
1970 		else
1971 			goto stop_flogi_current_fcf;
1972 	}
1973 	return 0;
1974 
1975 stop_flogi_current_fcf:
1976 	lpfc_can_disctmo(vport);
1977 	return 1;
1978 }
1979 
1980 /**
1981  * lpfc_sli4_fcf_pri_list_del
1982  * @phba: pointer to lpfc hba data structure.
1983  * @fcf_index the index of the fcf record to delete
1984  * This routine checks the on list flag of the fcf_index to be deleted.
1985  * If it is one the list then it is removed from the list, and the flag
1986  * is cleared. This routine grab the hbalock before removing the fcf
1987  * record from the list.
1988  **/
1989 static void lpfc_sli4_fcf_pri_list_del(struct lpfc_hba *phba,
1990 			uint16_t fcf_index)
1991 {
1992 	struct lpfc_fcf_pri *new_fcf_pri;
1993 
1994 	new_fcf_pri = &phba->fcf.fcf_pri[fcf_index];
1995 	lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
1996 		"3058 deleting idx x%x pri x%x flg x%x\n",
1997 		fcf_index, new_fcf_pri->fcf_rec.priority,
1998 		 new_fcf_pri->fcf_rec.flag);
1999 	spin_lock_irq(&phba->hbalock);
2000 	if (new_fcf_pri->fcf_rec.flag & LPFC_FCF_ON_PRI_LIST) {
2001 		if (phba->fcf.current_rec.priority ==
2002 				new_fcf_pri->fcf_rec.priority)
2003 			phba->fcf.eligible_fcf_cnt--;
2004 		list_del_init(&new_fcf_pri->list);
2005 		new_fcf_pri->fcf_rec.flag &= ~LPFC_FCF_ON_PRI_LIST;
2006 	}
2007 	spin_unlock_irq(&phba->hbalock);
2008 }
2009 
2010 /**
2011  * lpfc_sli4_set_fcf_flogi_fail
2012  * @phba: pointer to lpfc hba data structure.
2013  * @fcf_index the index of the fcf record to update
2014  * This routine acquires the hbalock and then set the LPFC_FCF_FLOGI_FAILED
2015  * flag so the the round robin slection for the particular priority level
2016  * will try a different fcf record that does not have this bit set.
2017  * If the fcf record is re-read for any reason this flag is cleared brfore
2018  * adding it to the priority list.
2019  **/
2020 void
2021 lpfc_sli4_set_fcf_flogi_fail(struct lpfc_hba *phba, uint16_t fcf_index)
2022 {
2023 	struct lpfc_fcf_pri *new_fcf_pri;
2024 	new_fcf_pri = &phba->fcf.fcf_pri[fcf_index];
2025 	spin_lock_irq(&phba->hbalock);
2026 	new_fcf_pri->fcf_rec.flag |= LPFC_FCF_FLOGI_FAILED;
2027 	spin_unlock_irq(&phba->hbalock);
2028 }
2029 
2030 /**
2031  * lpfc_sli4_fcf_pri_list_add
2032  * @phba: pointer to lpfc hba data structure.
2033  * @fcf_index the index of the fcf record to add
2034  * This routine checks the priority of the fcf_index to be added.
2035  * If it is a lower priority than the current head of the fcf_pri list
2036  * then it is added to the list in the right order.
2037  * If it is the same priority as the current head of the list then it
2038  * is added to the head of the list and its bit in the rr_bmask is set.
2039  * If the fcf_index to be added is of a higher priority than the current
2040  * head of the list then the rr_bmask is cleared, its bit is set in the
2041  * rr_bmask and it is added to the head of the list.
2042  * returns:
2043  * 0=success 1=failure
2044  **/
2045 int lpfc_sli4_fcf_pri_list_add(struct lpfc_hba *phba, uint16_t fcf_index,
2046 	struct fcf_record *new_fcf_record)
2047 {
2048 	uint16_t current_fcf_pri;
2049 	uint16_t last_index;
2050 	struct lpfc_fcf_pri *fcf_pri;
2051 	struct lpfc_fcf_pri *next_fcf_pri;
2052 	struct lpfc_fcf_pri *new_fcf_pri;
2053 	int ret;
2054 
2055 	new_fcf_pri = &phba->fcf.fcf_pri[fcf_index];
2056 	lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2057 		"3059 adding idx x%x pri x%x flg x%x\n",
2058 		fcf_index, new_fcf_record->fip_priority,
2059 		 new_fcf_pri->fcf_rec.flag);
2060 	spin_lock_irq(&phba->hbalock);
2061 	if (new_fcf_pri->fcf_rec.flag & LPFC_FCF_ON_PRI_LIST)
2062 		list_del_init(&new_fcf_pri->list);
2063 	new_fcf_pri->fcf_rec.fcf_index = fcf_index;
2064 	new_fcf_pri->fcf_rec.priority = new_fcf_record->fip_priority;
2065 	if (list_empty(&phba->fcf.fcf_pri_list)) {
2066 		list_add(&new_fcf_pri->list, &phba->fcf.fcf_pri_list);
2067 		ret = lpfc_sli4_fcf_rr_index_set(phba,
2068 				new_fcf_pri->fcf_rec.fcf_index);
2069 		goto out;
2070 	}
2071 
2072 	last_index = find_first_bit(phba->fcf.fcf_rr_bmask,
2073 				LPFC_SLI4_FCF_TBL_INDX_MAX);
2074 	if (last_index >= LPFC_SLI4_FCF_TBL_INDX_MAX) {
2075 		ret = 0; /* Empty rr list */
2076 		goto out;
2077 	}
2078 	current_fcf_pri = phba->fcf.fcf_pri[last_index].fcf_rec.priority;
2079 	if (new_fcf_pri->fcf_rec.priority <=  current_fcf_pri) {
2080 		list_add(&new_fcf_pri->list, &phba->fcf.fcf_pri_list);
2081 		if (new_fcf_pri->fcf_rec.priority <  current_fcf_pri) {
2082 			memset(phba->fcf.fcf_rr_bmask, 0,
2083 				sizeof(*phba->fcf.fcf_rr_bmask));
2084 			/* fcfs_at_this_priority_level = 1; */
2085 			phba->fcf.eligible_fcf_cnt = 1;
2086 		} else
2087 			/* fcfs_at_this_priority_level++; */
2088 			phba->fcf.eligible_fcf_cnt++;
2089 		ret = lpfc_sli4_fcf_rr_index_set(phba,
2090 				new_fcf_pri->fcf_rec.fcf_index);
2091 		goto out;
2092 	}
2093 
2094 	list_for_each_entry_safe(fcf_pri, next_fcf_pri,
2095 				&phba->fcf.fcf_pri_list, list) {
2096 		if (new_fcf_pri->fcf_rec.priority <=
2097 				fcf_pri->fcf_rec.priority) {
2098 			if (fcf_pri->list.prev == &phba->fcf.fcf_pri_list)
2099 				list_add(&new_fcf_pri->list,
2100 						&phba->fcf.fcf_pri_list);
2101 			else
2102 				list_add(&new_fcf_pri->list,
2103 					 &((struct lpfc_fcf_pri *)
2104 					fcf_pri->list.prev)->list);
2105 			ret = 0;
2106 			goto out;
2107 		} else if (fcf_pri->list.next == &phba->fcf.fcf_pri_list
2108 			|| new_fcf_pri->fcf_rec.priority <
2109 				next_fcf_pri->fcf_rec.priority) {
2110 			list_add(&new_fcf_pri->list, &fcf_pri->list);
2111 			ret = 0;
2112 			goto out;
2113 		}
2114 		if (new_fcf_pri->fcf_rec.priority > fcf_pri->fcf_rec.priority)
2115 			continue;
2116 
2117 	}
2118 	ret = 1;
2119 out:
2120 	/* we use = instead of |= to clear the FLOGI_FAILED flag. */
2121 	new_fcf_pri->fcf_rec.flag = LPFC_FCF_ON_PRI_LIST;
2122 	spin_unlock_irq(&phba->hbalock);
2123 	return ret;
2124 }
2125 
2126 /**
2127  * lpfc_mbx_cmpl_fcf_scan_read_fcf_rec - fcf scan read_fcf mbox cmpl handler.
2128  * @phba: pointer to lpfc hba data structure.
2129  * @mboxq: pointer to mailbox object.
2130  *
2131  * This function iterates through all the fcf records available in
2132  * HBA and chooses the optimal FCF record for discovery. After finding
2133  * the FCF for discovery it registers the FCF record and kicks start
2134  * discovery.
2135  * If FCF_IN_USE flag is set in currently used FCF, the routine tries to
2136  * use an FCF record which matches fabric name and mac address of the
2137  * currently used FCF record.
2138  * If the driver supports only one FCF, it will try to use the FCF record
2139  * used by BOOT_BIOS.
2140  */
2141 void
2142 lpfc_mbx_cmpl_fcf_scan_read_fcf_rec(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
2143 {
2144 	struct fcf_record *new_fcf_record;
2145 	uint32_t boot_flag, addr_mode;
2146 	uint16_t fcf_index, next_fcf_index;
2147 	struct lpfc_fcf_rec *fcf_rec = NULL;
2148 	uint16_t vlan_id;
2149 	uint32_t seed;
2150 	bool select_new_fcf;
2151 	int rc;
2152 
2153 	/* If there is pending FCoE event restart FCF table scan */
2154 	if (lpfc_check_pending_fcoe_event(phba, LPFC_SKIP_UNREG_FCF)) {
2155 		lpfc_sli4_mbox_cmd_free(phba, mboxq);
2156 		return;
2157 	}
2158 
2159 	/* Parse the FCF record from the non-embedded mailbox command */
2160 	new_fcf_record = lpfc_sli4_fcf_rec_mbox_parse(phba, mboxq,
2161 						      &next_fcf_index);
2162 	if (!new_fcf_record) {
2163 		lpfc_printf_log(phba, KERN_ERR, LOG_FIP,
2164 				"2765 Mailbox command READ_FCF_RECORD "
2165 				"failed to retrieve a FCF record.\n");
2166 		/* Let next new FCF event trigger fast failover */
2167 		spin_lock_irq(&phba->hbalock);
2168 		phba->hba_flag &= ~FCF_TS_INPROG;
2169 		spin_unlock_irq(&phba->hbalock);
2170 		lpfc_sli4_mbox_cmd_free(phba, mboxq);
2171 		return;
2172 	}
2173 
2174 	/* Check the FCF record against the connection list */
2175 	rc = lpfc_match_fcf_conn_list(phba, new_fcf_record, &boot_flag,
2176 				      &addr_mode, &vlan_id);
2177 
2178 	/* Log the FCF record information if turned on */
2179 	lpfc_sli4_log_fcf_record_info(phba, new_fcf_record, vlan_id,
2180 				      next_fcf_index);
2181 
2182 	/*
2183 	 * If the fcf record does not match with connect list entries
2184 	 * read the next entry; otherwise, this is an eligible FCF
2185 	 * record for roundrobin FCF failover.
2186 	 */
2187 	if (!rc) {
2188 		lpfc_sli4_fcf_pri_list_del(phba,
2189 					bf_get(lpfc_fcf_record_fcf_index,
2190 					       new_fcf_record));
2191 		lpfc_printf_log(phba, KERN_WARNING, LOG_FIP,
2192 				"2781 FCF (x%x) failed connection "
2193 				"list check: (x%x/x%x/%x)\n",
2194 				bf_get(lpfc_fcf_record_fcf_index,
2195 				       new_fcf_record),
2196 				bf_get(lpfc_fcf_record_fcf_avail,
2197 				       new_fcf_record),
2198 				bf_get(lpfc_fcf_record_fcf_valid,
2199 				       new_fcf_record),
2200 				bf_get(lpfc_fcf_record_fcf_sol,
2201 				       new_fcf_record));
2202 		if ((phba->fcf.fcf_flag & FCF_IN_USE) &&
2203 		    lpfc_sli4_fcf_record_match(phba, &phba->fcf.current_rec,
2204 		    new_fcf_record, LPFC_FCOE_IGNORE_VID)) {
2205 			if (bf_get(lpfc_fcf_record_fcf_index, new_fcf_record) !=
2206 			    phba->fcf.current_rec.fcf_indx) {
2207 				lpfc_printf_log(phba, KERN_ERR, LOG_FIP,
2208 					"2862 FCF (x%x) matches property "
2209 					"of in-use FCF (x%x)\n",
2210 					bf_get(lpfc_fcf_record_fcf_index,
2211 					       new_fcf_record),
2212 					phba->fcf.current_rec.fcf_indx);
2213 				goto read_next_fcf;
2214 			}
2215 			/*
2216 			 * In case the current in-use FCF record becomes
2217 			 * invalid/unavailable during FCF discovery that
2218 			 * was not triggered by fast FCF failover process,
2219 			 * treat it as fast FCF failover.
2220 			 */
2221 			if (!(phba->fcf.fcf_flag & FCF_REDISC_PEND) &&
2222 			    !(phba->fcf.fcf_flag & FCF_REDISC_FOV)) {
2223 				lpfc_printf_log(phba, KERN_WARNING, LOG_FIP,
2224 						"2835 Invalid in-use FCF "
2225 						"(x%x), enter FCF failover "
2226 						"table scan.\n",
2227 						phba->fcf.current_rec.fcf_indx);
2228 				spin_lock_irq(&phba->hbalock);
2229 				phba->fcf.fcf_flag |= FCF_REDISC_FOV;
2230 				spin_unlock_irq(&phba->hbalock);
2231 				lpfc_sli4_mbox_cmd_free(phba, mboxq);
2232 				lpfc_sli4_fcf_scan_read_fcf_rec(phba,
2233 						LPFC_FCOE_FCF_GET_FIRST);
2234 				return;
2235 			}
2236 		}
2237 		goto read_next_fcf;
2238 	} else {
2239 		fcf_index = bf_get(lpfc_fcf_record_fcf_index, new_fcf_record);
2240 		rc = lpfc_sli4_fcf_pri_list_add(phba, fcf_index,
2241 							new_fcf_record);
2242 		if (rc)
2243 			goto read_next_fcf;
2244 	}
2245 
2246 	/*
2247 	 * If this is not the first FCF discovery of the HBA, use last
2248 	 * FCF record for the discovery. The condition that a rescan
2249 	 * matches the in-use FCF record: fabric name, switch name, mac
2250 	 * address, and vlan_id.
2251 	 */
2252 	spin_lock_irq(&phba->hbalock);
2253 	if (phba->fcf.fcf_flag & FCF_IN_USE) {
2254 		if (phba->cfg_fcf_failover_policy == LPFC_FCF_FOV &&
2255 			lpfc_sli4_fcf_record_match(phba, &phba->fcf.current_rec,
2256 		    new_fcf_record, vlan_id)) {
2257 			if (bf_get(lpfc_fcf_record_fcf_index, new_fcf_record) ==
2258 			    phba->fcf.current_rec.fcf_indx) {
2259 				phba->fcf.fcf_flag |= FCF_AVAILABLE;
2260 				if (phba->fcf.fcf_flag & FCF_REDISC_PEND)
2261 					/* Stop FCF redisc wait timer */
2262 					__lpfc_sli4_stop_fcf_redisc_wait_timer(
2263 									phba);
2264 				else if (phba->fcf.fcf_flag & FCF_REDISC_FOV)
2265 					/* Fast failover, mark completed */
2266 					phba->fcf.fcf_flag &= ~FCF_REDISC_FOV;
2267 				spin_unlock_irq(&phba->hbalock);
2268 				lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2269 						"2836 New FCF matches in-use "
2270 						"FCF (x%x), port_state:x%x, "
2271 						"fc_flag:x%x\n",
2272 						phba->fcf.current_rec.fcf_indx,
2273 						phba->pport->port_state,
2274 						phba->pport->fc_flag);
2275 				goto out;
2276 			} else
2277 				lpfc_printf_log(phba, KERN_ERR, LOG_FIP,
2278 					"2863 New FCF (x%x) matches "
2279 					"property of in-use FCF (x%x)\n",
2280 					bf_get(lpfc_fcf_record_fcf_index,
2281 					       new_fcf_record),
2282 					phba->fcf.current_rec.fcf_indx);
2283 		}
2284 		/*
2285 		 * Read next FCF record from HBA searching for the matching
2286 		 * with in-use record only if not during the fast failover
2287 		 * period. In case of fast failover period, it shall try to
2288 		 * determine whether the FCF record just read should be the
2289 		 * next candidate.
2290 		 */
2291 		if (!(phba->fcf.fcf_flag & FCF_REDISC_FOV)) {
2292 			spin_unlock_irq(&phba->hbalock);
2293 			goto read_next_fcf;
2294 		}
2295 	}
2296 	/*
2297 	 * Update on failover FCF record only if it's in FCF fast-failover
2298 	 * period; otherwise, update on current FCF record.
2299 	 */
2300 	if (phba->fcf.fcf_flag & FCF_REDISC_FOV)
2301 		fcf_rec = &phba->fcf.failover_rec;
2302 	else
2303 		fcf_rec = &phba->fcf.current_rec;
2304 
2305 	if (phba->fcf.fcf_flag & FCF_AVAILABLE) {
2306 		/*
2307 		 * If the driver FCF record does not have boot flag
2308 		 * set and new hba fcf record has boot flag set, use
2309 		 * the new hba fcf record.
2310 		 */
2311 		if (boot_flag && !(fcf_rec->flag & BOOT_ENABLE)) {
2312 			/* Choose this FCF record */
2313 			lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2314 					"2837 Update current FCF record "
2315 					"(x%x) with new FCF record (x%x)\n",
2316 					fcf_rec->fcf_indx,
2317 					bf_get(lpfc_fcf_record_fcf_index,
2318 					new_fcf_record));
2319 			__lpfc_update_fcf_record(phba, fcf_rec, new_fcf_record,
2320 					addr_mode, vlan_id, BOOT_ENABLE);
2321 			spin_unlock_irq(&phba->hbalock);
2322 			goto read_next_fcf;
2323 		}
2324 		/*
2325 		 * If the driver FCF record has boot flag set and the
2326 		 * new hba FCF record does not have boot flag, read
2327 		 * the next FCF record.
2328 		 */
2329 		if (!boot_flag && (fcf_rec->flag & BOOT_ENABLE)) {
2330 			spin_unlock_irq(&phba->hbalock);
2331 			goto read_next_fcf;
2332 		}
2333 		/*
2334 		 * If the new hba FCF record has lower priority value
2335 		 * than the driver FCF record, use the new record.
2336 		 */
2337 		if (new_fcf_record->fip_priority < fcf_rec->priority) {
2338 			/* Choose the new FCF record with lower priority */
2339 			lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2340 					"2838 Update current FCF record "
2341 					"(x%x) with new FCF record (x%x)\n",
2342 					fcf_rec->fcf_indx,
2343 					bf_get(lpfc_fcf_record_fcf_index,
2344 					       new_fcf_record));
2345 			__lpfc_update_fcf_record(phba, fcf_rec, new_fcf_record,
2346 					addr_mode, vlan_id, 0);
2347 			/* Reset running random FCF selection count */
2348 			phba->fcf.eligible_fcf_cnt = 1;
2349 		} else if (new_fcf_record->fip_priority == fcf_rec->priority) {
2350 			/* Update running random FCF selection count */
2351 			phba->fcf.eligible_fcf_cnt++;
2352 			select_new_fcf = lpfc_sli4_new_fcf_random_select(phba,
2353 						phba->fcf.eligible_fcf_cnt);
2354 			if (select_new_fcf) {
2355 				lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2356 					"2839 Update current FCF record "
2357 					"(x%x) with new FCF record (x%x)\n",
2358 					fcf_rec->fcf_indx,
2359 					bf_get(lpfc_fcf_record_fcf_index,
2360 					       new_fcf_record));
2361 				/* Choose the new FCF by random selection */
2362 				__lpfc_update_fcf_record(phba, fcf_rec,
2363 							 new_fcf_record,
2364 							 addr_mode, vlan_id, 0);
2365 			}
2366 		}
2367 		spin_unlock_irq(&phba->hbalock);
2368 		goto read_next_fcf;
2369 	}
2370 	/*
2371 	 * This is the first suitable FCF record, choose this record for
2372 	 * initial best-fit FCF.
2373 	 */
2374 	if (fcf_rec) {
2375 		lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2376 				"2840 Update initial FCF candidate "
2377 				"with FCF (x%x)\n",
2378 				bf_get(lpfc_fcf_record_fcf_index,
2379 				       new_fcf_record));
2380 		__lpfc_update_fcf_record(phba, fcf_rec, new_fcf_record,
2381 					 addr_mode, vlan_id, (boot_flag ?
2382 					 BOOT_ENABLE : 0));
2383 		phba->fcf.fcf_flag |= FCF_AVAILABLE;
2384 		/* Setup initial running random FCF selection count */
2385 		phba->fcf.eligible_fcf_cnt = 1;
2386 		/* Seeding the random number generator for random selection */
2387 		seed = (uint32_t)(0xFFFFFFFF & jiffies);
2388 		prandom_seed(seed);
2389 	}
2390 	spin_unlock_irq(&phba->hbalock);
2391 	goto read_next_fcf;
2392 
2393 read_next_fcf:
2394 	lpfc_sli4_mbox_cmd_free(phba, mboxq);
2395 	if (next_fcf_index == LPFC_FCOE_FCF_NEXT_NONE || next_fcf_index == 0) {
2396 		if (phba->fcf.fcf_flag & FCF_REDISC_FOV) {
2397 			/*
2398 			 * Case of FCF fast failover scan
2399 			 */
2400 
2401 			/*
2402 			 * It has not found any suitable FCF record, cancel
2403 			 * FCF scan inprogress, and do nothing
2404 			 */
2405 			if (!(phba->fcf.failover_rec.flag & RECORD_VALID)) {
2406 				lpfc_printf_log(phba, KERN_WARNING, LOG_FIP,
2407 					       "2782 No suitable FCF found: "
2408 					       "(x%x/x%x)\n",
2409 					       phba->fcoe_eventtag_at_fcf_scan,
2410 					       bf_get(lpfc_fcf_record_fcf_index,
2411 						      new_fcf_record));
2412 				spin_lock_irq(&phba->hbalock);
2413 				if (phba->hba_flag & HBA_DEVLOSS_TMO) {
2414 					phba->hba_flag &= ~FCF_TS_INPROG;
2415 					spin_unlock_irq(&phba->hbalock);
2416 					/* Unregister in-use FCF and rescan */
2417 					lpfc_printf_log(phba, KERN_INFO,
2418 							LOG_FIP,
2419 							"2864 On devloss tmo "
2420 							"unreg in-use FCF and "
2421 							"rescan FCF table\n");
2422 					lpfc_unregister_fcf_rescan(phba);
2423 					return;
2424 				}
2425 				/*
2426 				 * Let next new FCF event trigger fast failover
2427 				 */
2428 				phba->hba_flag &= ~FCF_TS_INPROG;
2429 				spin_unlock_irq(&phba->hbalock);
2430 				return;
2431 			}
2432 			/*
2433 			 * It has found a suitable FCF record that is not
2434 			 * the same as in-use FCF record, unregister the
2435 			 * in-use FCF record, replace the in-use FCF record
2436 			 * with the new FCF record, mark FCF fast failover
2437 			 * completed, and then start register the new FCF
2438 			 * record.
2439 			 */
2440 
2441 			/* Unregister the current in-use FCF record */
2442 			lpfc_unregister_fcf(phba);
2443 
2444 			/* Replace in-use record with the new record */
2445 			lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2446 					"2842 Replace in-use FCF (x%x) "
2447 					"with failover FCF (x%x)\n",
2448 					phba->fcf.current_rec.fcf_indx,
2449 					phba->fcf.failover_rec.fcf_indx);
2450 			memcpy(&phba->fcf.current_rec,
2451 			       &phba->fcf.failover_rec,
2452 			       sizeof(struct lpfc_fcf_rec));
2453 			/*
2454 			 * Mark the fast FCF failover rediscovery completed
2455 			 * and the start of the first round of the roundrobin
2456 			 * FCF failover.
2457 			 */
2458 			spin_lock_irq(&phba->hbalock);
2459 			phba->fcf.fcf_flag &= ~FCF_REDISC_FOV;
2460 			spin_unlock_irq(&phba->hbalock);
2461 			/* Register to the new FCF record */
2462 			lpfc_register_fcf(phba);
2463 		} else {
2464 			/*
2465 			 * In case of transaction period to fast FCF failover,
2466 			 * do nothing when search to the end of the FCF table.
2467 			 */
2468 			if ((phba->fcf.fcf_flag & FCF_REDISC_EVT) ||
2469 			    (phba->fcf.fcf_flag & FCF_REDISC_PEND))
2470 				return;
2471 
2472 			if (phba->cfg_fcf_failover_policy == LPFC_FCF_FOV &&
2473 				phba->fcf.fcf_flag & FCF_IN_USE) {
2474 				/*
2475 				 * In case the current in-use FCF record no
2476 				 * longer existed during FCF discovery that
2477 				 * was not triggered by fast FCF failover
2478 				 * process, treat it as fast FCF failover.
2479 				 */
2480 				lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2481 						"2841 In-use FCF record (x%x) "
2482 						"not reported, entering fast "
2483 						"FCF failover mode scanning.\n",
2484 						phba->fcf.current_rec.fcf_indx);
2485 				spin_lock_irq(&phba->hbalock);
2486 				phba->fcf.fcf_flag |= FCF_REDISC_FOV;
2487 				spin_unlock_irq(&phba->hbalock);
2488 				lpfc_sli4_fcf_scan_read_fcf_rec(phba,
2489 						LPFC_FCOE_FCF_GET_FIRST);
2490 				return;
2491 			}
2492 			/* Register to the new FCF record */
2493 			lpfc_register_fcf(phba);
2494 		}
2495 	} else
2496 		lpfc_sli4_fcf_scan_read_fcf_rec(phba, next_fcf_index);
2497 	return;
2498 
2499 out:
2500 	lpfc_sli4_mbox_cmd_free(phba, mboxq);
2501 	lpfc_register_fcf(phba);
2502 
2503 	return;
2504 }
2505 
2506 /**
2507  * lpfc_mbx_cmpl_fcf_rr_read_fcf_rec - fcf roundrobin read_fcf mbox cmpl hdler
2508  * @phba: pointer to lpfc hba data structure.
2509  * @mboxq: pointer to mailbox object.
2510  *
2511  * This is the callback function for FLOGI failure roundrobin FCF failover
2512  * read FCF record mailbox command from the eligible FCF record bmask for
2513  * performing the failover. If the FCF read back is not valid/available, it
2514  * fails through to retrying FLOGI to the currently registered FCF again.
2515  * Otherwise, if the FCF read back is valid and available, it will set the
2516  * newly read FCF record to the failover FCF record, unregister currently
2517  * registered FCF record, copy the failover FCF record to the current
2518  * FCF record, and then register the current FCF record before proceeding
2519  * to trying FLOGI on the new failover FCF.
2520  */
2521 void
2522 lpfc_mbx_cmpl_fcf_rr_read_fcf_rec(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
2523 {
2524 	struct fcf_record *new_fcf_record;
2525 	uint32_t boot_flag, addr_mode;
2526 	uint16_t next_fcf_index, fcf_index;
2527 	uint16_t current_fcf_index;
2528 	uint16_t vlan_id;
2529 	int rc;
2530 
2531 	/* If link state is not up, stop the roundrobin failover process */
2532 	if (phba->link_state < LPFC_LINK_UP) {
2533 		spin_lock_irq(&phba->hbalock);
2534 		phba->fcf.fcf_flag &= ~FCF_DISCOVERY;
2535 		phba->hba_flag &= ~FCF_RR_INPROG;
2536 		spin_unlock_irq(&phba->hbalock);
2537 		goto out;
2538 	}
2539 
2540 	/* Parse the FCF record from the non-embedded mailbox command */
2541 	new_fcf_record = lpfc_sli4_fcf_rec_mbox_parse(phba, mboxq,
2542 						      &next_fcf_index);
2543 	if (!new_fcf_record) {
2544 		lpfc_printf_log(phba, KERN_WARNING, LOG_FIP,
2545 				"2766 Mailbox command READ_FCF_RECORD "
2546 				"failed to retrieve a FCF record. "
2547 				"hba_flg x%x fcf_flg x%x\n", phba->hba_flag,
2548 				phba->fcf.fcf_flag);
2549 		lpfc_unregister_fcf_rescan(phba);
2550 		goto out;
2551 	}
2552 
2553 	/* Get the needed parameters from FCF record */
2554 	rc = lpfc_match_fcf_conn_list(phba, new_fcf_record, &boot_flag,
2555 				      &addr_mode, &vlan_id);
2556 
2557 	/* Log the FCF record information if turned on */
2558 	lpfc_sli4_log_fcf_record_info(phba, new_fcf_record, vlan_id,
2559 				      next_fcf_index);
2560 
2561 	fcf_index = bf_get(lpfc_fcf_record_fcf_index, new_fcf_record);
2562 	if (!rc) {
2563 		lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2564 				"2848 Remove ineligible FCF (x%x) from "
2565 				"from roundrobin bmask\n", fcf_index);
2566 		/* Clear roundrobin bmask bit for ineligible FCF */
2567 		lpfc_sli4_fcf_rr_index_clear(phba, fcf_index);
2568 		/* Perform next round of roundrobin FCF failover */
2569 		fcf_index = lpfc_sli4_fcf_rr_next_index_get(phba);
2570 		rc = lpfc_sli4_fcf_rr_next_proc(phba->pport, fcf_index);
2571 		if (rc)
2572 			goto out;
2573 		goto error_out;
2574 	}
2575 
2576 	if (fcf_index == phba->fcf.current_rec.fcf_indx) {
2577 		lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2578 				"2760 Perform FLOGI roundrobin FCF failover: "
2579 				"FCF (x%x) back to FCF (x%x)\n",
2580 				phba->fcf.current_rec.fcf_indx, fcf_index);
2581 		/* Wait 500 ms before retrying FLOGI to current FCF */
2582 		msleep(500);
2583 		lpfc_issue_init_vfi(phba->pport);
2584 		goto out;
2585 	}
2586 
2587 	/* Upload new FCF record to the failover FCF record */
2588 	lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2589 			"2834 Update current FCF (x%x) with new FCF (x%x)\n",
2590 			phba->fcf.failover_rec.fcf_indx, fcf_index);
2591 	spin_lock_irq(&phba->hbalock);
2592 	__lpfc_update_fcf_record(phba, &phba->fcf.failover_rec,
2593 				 new_fcf_record, addr_mode, vlan_id,
2594 				 (boot_flag ? BOOT_ENABLE : 0));
2595 	spin_unlock_irq(&phba->hbalock);
2596 
2597 	current_fcf_index = phba->fcf.current_rec.fcf_indx;
2598 
2599 	/* Unregister the current in-use FCF record */
2600 	lpfc_unregister_fcf(phba);
2601 
2602 	/* Replace in-use record with the new record */
2603 	memcpy(&phba->fcf.current_rec, &phba->fcf.failover_rec,
2604 	       sizeof(struct lpfc_fcf_rec));
2605 
2606 	lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2607 			"2783 Perform FLOGI roundrobin FCF failover: FCF "
2608 			"(x%x) to FCF (x%x)\n", current_fcf_index, fcf_index);
2609 
2610 error_out:
2611 	lpfc_register_fcf(phba);
2612 out:
2613 	lpfc_sli4_mbox_cmd_free(phba, mboxq);
2614 }
2615 
2616 /**
2617  * lpfc_mbx_cmpl_read_fcf_rec - read fcf completion handler.
2618  * @phba: pointer to lpfc hba data structure.
2619  * @mboxq: pointer to mailbox object.
2620  *
2621  * This is the callback function of read FCF record mailbox command for
2622  * updating the eligible FCF bmask for FLOGI failure roundrobin FCF
2623  * failover when a new FCF event happened. If the FCF read back is
2624  * valid/available and it passes the connection list check, it updates
2625  * the bmask for the eligible FCF record for roundrobin failover.
2626  */
2627 void
2628 lpfc_mbx_cmpl_read_fcf_rec(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
2629 {
2630 	struct fcf_record *new_fcf_record;
2631 	uint32_t boot_flag, addr_mode;
2632 	uint16_t fcf_index, next_fcf_index;
2633 	uint16_t vlan_id;
2634 	int rc;
2635 
2636 	/* If link state is not up, no need to proceed */
2637 	if (phba->link_state < LPFC_LINK_UP)
2638 		goto out;
2639 
2640 	/* If FCF discovery period is over, no need to proceed */
2641 	if (!(phba->fcf.fcf_flag & FCF_DISCOVERY))
2642 		goto out;
2643 
2644 	/* Parse the FCF record from the non-embedded mailbox command */
2645 	new_fcf_record = lpfc_sli4_fcf_rec_mbox_parse(phba, mboxq,
2646 						      &next_fcf_index);
2647 	if (!new_fcf_record) {
2648 		lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2649 				"2767 Mailbox command READ_FCF_RECORD "
2650 				"failed to retrieve a FCF record.\n");
2651 		goto out;
2652 	}
2653 
2654 	/* Check the connection list for eligibility */
2655 	rc = lpfc_match_fcf_conn_list(phba, new_fcf_record, &boot_flag,
2656 				      &addr_mode, &vlan_id);
2657 
2658 	/* Log the FCF record information if turned on */
2659 	lpfc_sli4_log_fcf_record_info(phba, new_fcf_record, vlan_id,
2660 				      next_fcf_index);
2661 
2662 	if (!rc)
2663 		goto out;
2664 
2665 	/* Update the eligible FCF record index bmask */
2666 	fcf_index = bf_get(lpfc_fcf_record_fcf_index, new_fcf_record);
2667 
2668 	rc = lpfc_sli4_fcf_pri_list_add(phba, fcf_index, new_fcf_record);
2669 
2670 out:
2671 	lpfc_sli4_mbox_cmd_free(phba, mboxq);
2672 }
2673 
2674 /**
2675  * lpfc_init_vfi_cmpl - Completion handler for init_vfi mbox command.
2676  * @phba: pointer to lpfc hba data structure.
2677  * @mboxq: pointer to mailbox data structure.
2678  *
2679  * This function handles completion of init vfi mailbox command.
2680  */
2681 void
2682 lpfc_init_vfi_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
2683 {
2684 	struct lpfc_vport *vport = mboxq->vport;
2685 
2686 	/*
2687 	 * VFI not supported on interface type 0, just do the flogi
2688 	 * Also continue if the VFI is in use - just use the same one.
2689 	 */
2690 	if (mboxq->u.mb.mbxStatus &&
2691 	    (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) !=
2692 			LPFC_SLI_INTF_IF_TYPE_0) &&
2693 	    mboxq->u.mb.mbxStatus != MBX_VFI_IN_USE) {
2694 		lpfc_printf_vlog(vport, KERN_ERR,
2695 				LOG_MBOX,
2696 				"2891 Init VFI mailbox failed 0x%x\n",
2697 				mboxq->u.mb.mbxStatus);
2698 		mempool_free(mboxq, phba->mbox_mem_pool);
2699 		lpfc_vport_set_state(vport, FC_VPORT_FAILED);
2700 		return;
2701 	}
2702 
2703 	lpfc_initial_flogi(vport);
2704 	mempool_free(mboxq, phba->mbox_mem_pool);
2705 	return;
2706 }
2707 
2708 /**
2709  * lpfc_issue_init_vfi - Issue init_vfi mailbox command.
2710  * @vport: pointer to lpfc_vport data structure.
2711  *
2712  * This function issue a init_vfi mailbox command to initialize the VFI and
2713  * VPI for the physical port.
2714  */
2715 void
2716 lpfc_issue_init_vfi(struct lpfc_vport *vport)
2717 {
2718 	LPFC_MBOXQ_t *mboxq;
2719 	int rc;
2720 	struct lpfc_hba *phba = vport->phba;
2721 
2722 	mboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
2723 	if (!mboxq) {
2724 		lpfc_printf_vlog(vport, KERN_ERR,
2725 			LOG_MBOX, "2892 Failed to allocate "
2726 			"init_vfi mailbox\n");
2727 		return;
2728 	}
2729 	lpfc_init_vfi(mboxq, vport);
2730 	mboxq->mbox_cmpl = lpfc_init_vfi_cmpl;
2731 	rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_NOWAIT);
2732 	if (rc == MBX_NOT_FINISHED) {
2733 		lpfc_printf_vlog(vport, KERN_ERR,
2734 			LOG_MBOX, "2893 Failed to issue init_vfi mailbox\n");
2735 		mempool_free(mboxq, vport->phba->mbox_mem_pool);
2736 	}
2737 }
2738 
2739 /**
2740  * lpfc_init_vpi_cmpl - Completion handler for init_vpi mbox command.
2741  * @phba: pointer to lpfc hba data structure.
2742  * @mboxq: pointer to mailbox data structure.
2743  *
2744  * This function handles completion of init vpi mailbox command.
2745  */
2746 void
2747 lpfc_init_vpi_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
2748 {
2749 	struct lpfc_vport *vport = mboxq->vport;
2750 	struct lpfc_nodelist *ndlp;
2751 	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2752 
2753 	if (mboxq->u.mb.mbxStatus) {
2754 		lpfc_printf_vlog(vport, KERN_ERR,
2755 				LOG_MBOX,
2756 				"2609 Init VPI mailbox failed 0x%x\n",
2757 				mboxq->u.mb.mbxStatus);
2758 		mempool_free(mboxq, phba->mbox_mem_pool);
2759 		lpfc_vport_set_state(vport, FC_VPORT_FAILED);
2760 		return;
2761 	}
2762 	spin_lock_irq(shost->host_lock);
2763 	vport->fc_flag &= ~FC_VPORT_NEEDS_INIT_VPI;
2764 	spin_unlock_irq(shost->host_lock);
2765 
2766 	/* If this port is physical port or FDISC is done, do reg_vpi */
2767 	if ((phba->pport == vport) || (vport->port_state == LPFC_FDISC)) {
2768 			ndlp = lpfc_findnode_did(vport, Fabric_DID);
2769 			if (!ndlp)
2770 				lpfc_printf_vlog(vport, KERN_ERR,
2771 					LOG_DISCOVERY,
2772 					"2731 Cannot find fabric "
2773 					"controller node\n");
2774 			else
2775 				lpfc_register_new_vport(phba, vport, ndlp);
2776 			mempool_free(mboxq, phba->mbox_mem_pool);
2777 			return;
2778 	}
2779 
2780 	if (phba->link_flag & LS_NPIV_FAB_SUPPORTED)
2781 		lpfc_initial_fdisc(vport);
2782 	else {
2783 		lpfc_vport_set_state(vport, FC_VPORT_NO_FABRIC_SUPP);
2784 		lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
2785 				 "2606 No NPIV Fabric support\n");
2786 	}
2787 	mempool_free(mboxq, phba->mbox_mem_pool);
2788 	return;
2789 }
2790 
2791 /**
2792  * lpfc_issue_init_vpi - Issue init_vpi mailbox command.
2793  * @vport: pointer to lpfc_vport data structure.
2794  *
2795  * This function issue a init_vpi mailbox command to initialize
2796  * VPI for the vport.
2797  */
2798 void
2799 lpfc_issue_init_vpi(struct lpfc_vport *vport)
2800 {
2801 	LPFC_MBOXQ_t *mboxq;
2802 	int rc, vpi;
2803 
2804 	if ((vport->port_type != LPFC_PHYSICAL_PORT) && (!vport->vpi)) {
2805 		vpi = lpfc_alloc_vpi(vport->phba);
2806 		if (!vpi) {
2807 			lpfc_printf_vlog(vport, KERN_ERR,
2808 					 LOG_MBOX,
2809 					 "3303 Failed to obtain vport vpi\n");
2810 			lpfc_vport_set_state(vport, FC_VPORT_FAILED);
2811 			return;
2812 		}
2813 		vport->vpi = vpi;
2814 	}
2815 
2816 	mboxq = mempool_alloc(vport->phba->mbox_mem_pool, GFP_KERNEL);
2817 	if (!mboxq) {
2818 		lpfc_printf_vlog(vport, KERN_ERR,
2819 			LOG_MBOX, "2607 Failed to allocate "
2820 			"init_vpi mailbox\n");
2821 		return;
2822 	}
2823 	lpfc_init_vpi(vport->phba, mboxq, vport->vpi);
2824 	mboxq->vport = vport;
2825 	mboxq->mbox_cmpl = lpfc_init_vpi_cmpl;
2826 	rc = lpfc_sli_issue_mbox(vport->phba, mboxq, MBX_NOWAIT);
2827 	if (rc == MBX_NOT_FINISHED) {
2828 		lpfc_printf_vlog(vport, KERN_ERR,
2829 			LOG_MBOX, "2608 Failed to issue init_vpi mailbox\n");
2830 		mempool_free(mboxq, vport->phba->mbox_mem_pool);
2831 	}
2832 }
2833 
2834 /**
2835  * lpfc_start_fdiscs - send fdiscs for each vports on this port.
2836  * @phba: pointer to lpfc hba data structure.
2837  *
2838  * This function loops through the list of vports on the @phba and issues an
2839  * FDISC if possible.
2840  */
2841 void
2842 lpfc_start_fdiscs(struct lpfc_hba *phba)
2843 {
2844 	struct lpfc_vport **vports;
2845 	int i;
2846 
2847 	vports = lpfc_create_vport_work_array(phba);
2848 	if (vports != NULL) {
2849 		for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
2850 			if (vports[i]->port_type == LPFC_PHYSICAL_PORT)
2851 				continue;
2852 			/* There are no vpi for this vport */
2853 			if (vports[i]->vpi > phba->max_vpi) {
2854 				lpfc_vport_set_state(vports[i],
2855 						     FC_VPORT_FAILED);
2856 				continue;
2857 			}
2858 			if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
2859 				lpfc_vport_set_state(vports[i],
2860 						     FC_VPORT_LINKDOWN);
2861 				continue;
2862 			}
2863 			if (vports[i]->fc_flag & FC_VPORT_NEEDS_INIT_VPI) {
2864 				lpfc_issue_init_vpi(vports[i]);
2865 				continue;
2866 			}
2867 			if (phba->link_flag & LS_NPIV_FAB_SUPPORTED)
2868 				lpfc_initial_fdisc(vports[i]);
2869 			else {
2870 				lpfc_vport_set_state(vports[i],
2871 						     FC_VPORT_NO_FABRIC_SUPP);
2872 				lpfc_printf_vlog(vports[i], KERN_ERR,
2873 						 LOG_ELS,
2874 						 "0259 No NPIV "
2875 						 "Fabric support\n");
2876 			}
2877 		}
2878 	}
2879 	lpfc_destroy_vport_work_array(phba, vports);
2880 }
2881 
2882 void
2883 lpfc_mbx_cmpl_reg_vfi(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
2884 {
2885 	struct lpfc_dmabuf *dmabuf = mboxq->context1;
2886 	struct lpfc_vport *vport = mboxq->vport;
2887 	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2888 
2889 	/*
2890 	 * VFI not supported for interface type 0, so ignore any mailbox
2891 	 * error (except VFI in use) and continue with the discovery.
2892 	 */
2893 	if (mboxq->u.mb.mbxStatus &&
2894 	    (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) !=
2895 			LPFC_SLI_INTF_IF_TYPE_0) &&
2896 	    mboxq->u.mb.mbxStatus != MBX_VFI_IN_USE) {
2897 		lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
2898 			 "2018 REG_VFI mbxStatus error x%x "
2899 			 "HBA state x%x\n",
2900 			 mboxq->u.mb.mbxStatus, vport->port_state);
2901 		if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
2902 			/* FLOGI failed, use loop map to make discovery list */
2903 			lpfc_disc_list_loopmap(vport);
2904 			/* Start discovery */
2905 			lpfc_disc_start(vport);
2906 			goto out_free_mem;
2907 		}
2908 		lpfc_vport_set_state(vport, FC_VPORT_FAILED);
2909 		goto out_free_mem;
2910 	}
2911 
2912 	/* If the VFI is already registered, there is nothing else to do
2913 	 * Unless this was a VFI update and we are in PT2PT mode, then
2914 	 * we should drop through to set the port state to ready.
2915 	 */
2916 	if (vport->fc_flag & FC_VFI_REGISTERED)
2917 		if (!(phba->sli_rev == LPFC_SLI_REV4 &&
2918 		      vport->fc_flag & FC_PT2PT))
2919 			goto out_free_mem;
2920 
2921 	/* The VPI is implicitly registered when the VFI is registered */
2922 	spin_lock_irq(shost->host_lock);
2923 	vport->vpi_state |= LPFC_VPI_REGISTERED;
2924 	vport->fc_flag |= FC_VFI_REGISTERED;
2925 	vport->fc_flag &= ~FC_VPORT_NEEDS_REG_VPI;
2926 	vport->fc_flag &= ~FC_VPORT_NEEDS_INIT_VPI;
2927 	spin_unlock_irq(shost->host_lock);
2928 
2929 	/* In case SLI4 FC loopback test, we are ready */
2930 	if ((phba->sli_rev == LPFC_SLI_REV4) &&
2931 	    (phba->link_flag & LS_LOOPBACK_MODE)) {
2932 		phba->link_state = LPFC_HBA_READY;
2933 		goto out_free_mem;
2934 	}
2935 
2936 	lpfc_printf_vlog(vport, KERN_INFO, LOG_SLI,
2937 			 "3313 cmpl reg vfi  port_state:%x fc_flag:%x myDid:%x "
2938 			 "alpacnt:%d LinkState:%x topology:%x\n",
2939 			 vport->port_state, vport->fc_flag, vport->fc_myDID,
2940 			 vport->phba->alpa_map[0],
2941 			 phba->link_state, phba->fc_topology);
2942 
2943 	if (vport->port_state == LPFC_FABRIC_CFG_LINK) {
2944 		/*
2945 		 * For private loop or for NPort pt2pt,
2946 		 * just start discovery and we are done.
2947 		 */
2948 		if ((vport->fc_flag & FC_PT2PT) ||
2949 		    ((phba->fc_topology == LPFC_TOPOLOGY_LOOP) &&
2950 		    !(vport->fc_flag & FC_PUBLIC_LOOP))) {
2951 
2952 			/* Use loop map to make discovery list */
2953 			lpfc_disc_list_loopmap(vport);
2954 			/* Start discovery */
2955 			if (vport->fc_flag & FC_PT2PT)
2956 				vport->port_state = LPFC_VPORT_READY;
2957 			else
2958 				lpfc_disc_start(vport);
2959 		} else {
2960 			lpfc_start_fdiscs(phba);
2961 			lpfc_do_scr_ns_plogi(phba, vport);
2962 		}
2963 	}
2964 
2965 out_free_mem:
2966 	mempool_free(mboxq, phba->mbox_mem_pool);
2967 	lpfc_mbuf_free(phba, dmabuf->virt, dmabuf->phys);
2968 	kfree(dmabuf);
2969 	return;
2970 }
2971 
2972 static void
2973 lpfc_mbx_cmpl_read_sparam(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
2974 {
2975 	MAILBOX_t *mb = &pmb->u.mb;
2976 	struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) pmb->context1;
2977 	struct lpfc_vport  *vport = pmb->vport;
2978 
2979 
2980 	/* Check for error */
2981 	if (mb->mbxStatus) {
2982 		/* READ_SPARAM mbox error <mbxStatus> state <hba_state> */
2983 		lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
2984 				 "0319 READ_SPARAM mbxStatus error x%x "
2985 				 "hba state x%x>\n",
2986 				 mb->mbxStatus, vport->port_state);
2987 		lpfc_linkdown(phba);
2988 		goto out;
2989 	}
2990 
2991 	memcpy((uint8_t *) &vport->fc_sparam, (uint8_t *) mp->virt,
2992 	       sizeof (struct serv_parm));
2993 	lpfc_update_vport_wwn(vport);
2994 	if (vport->port_type == LPFC_PHYSICAL_PORT) {
2995 		memcpy(&phba->wwnn, &vport->fc_nodename, sizeof(phba->wwnn));
2996 		memcpy(&phba->wwpn, &vport->fc_portname, sizeof(phba->wwnn));
2997 	}
2998 
2999 	lpfc_mbuf_free(phba, mp->virt, mp->phys);
3000 	kfree(mp);
3001 	mempool_free(pmb, phba->mbox_mem_pool);
3002 	return;
3003 
3004 out:
3005 	pmb->context1 = NULL;
3006 	lpfc_mbuf_free(phba, mp->virt, mp->phys);
3007 	kfree(mp);
3008 	lpfc_issue_clear_la(phba, vport);
3009 	mempool_free(pmb, phba->mbox_mem_pool);
3010 	return;
3011 }
3012 
3013 static void
3014 lpfc_mbx_process_link_up(struct lpfc_hba *phba, struct lpfc_mbx_read_top *la)
3015 {
3016 	struct lpfc_vport *vport = phba->pport;
3017 	LPFC_MBOXQ_t *sparam_mbox, *cfglink_mbox = NULL;
3018 	struct Scsi_Host *shost;
3019 	int i;
3020 	struct lpfc_dmabuf *mp;
3021 	int rc;
3022 	struct fcf_record *fcf_record;
3023 	uint32_t fc_flags = 0;
3024 
3025 	spin_lock_irq(&phba->hbalock);
3026 	switch (bf_get(lpfc_mbx_read_top_link_spd, la)) {
3027 	case LPFC_LINK_SPEED_1GHZ:
3028 	case LPFC_LINK_SPEED_2GHZ:
3029 	case LPFC_LINK_SPEED_4GHZ:
3030 	case LPFC_LINK_SPEED_8GHZ:
3031 	case LPFC_LINK_SPEED_10GHZ:
3032 	case LPFC_LINK_SPEED_16GHZ:
3033 		phba->fc_linkspeed = bf_get(lpfc_mbx_read_top_link_spd, la);
3034 		break;
3035 	default:
3036 		phba->fc_linkspeed = LPFC_LINK_SPEED_UNKNOWN;
3037 		break;
3038 	}
3039 
3040 	if (phba->fc_topology &&
3041 	    phba->fc_topology != bf_get(lpfc_mbx_read_top_topology, la)) {
3042 		lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
3043 				"3314 Toplogy changed was 0x%x is 0x%x\n",
3044 				phba->fc_topology,
3045 				bf_get(lpfc_mbx_read_top_topology, la));
3046 		phba->fc_topology_changed = 1;
3047 	}
3048 
3049 	phba->fc_topology = bf_get(lpfc_mbx_read_top_topology, la);
3050 	phba->link_flag &= ~LS_NPIV_FAB_SUPPORTED;
3051 
3052 	shost = lpfc_shost_from_vport(vport);
3053 	if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
3054 		phba->sli3_options &= ~LPFC_SLI3_NPIV_ENABLED;
3055 
3056 		/* if npiv is enabled and this adapter supports npiv log
3057 		 * a message that npiv is not supported in this topology
3058 		 */
3059 		if (phba->cfg_enable_npiv && phba->max_vpi)
3060 			lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
3061 				"1309 Link Up Event npiv not supported in loop "
3062 				"topology\n");
3063 				/* Get Loop Map information */
3064 		if (bf_get(lpfc_mbx_read_top_il, la))
3065 			fc_flags |= FC_LBIT;
3066 
3067 		vport->fc_myDID = bf_get(lpfc_mbx_read_top_alpa_granted, la);
3068 		i = la->lilpBde64.tus.f.bdeSize;
3069 
3070 		if (i == 0) {
3071 			phba->alpa_map[0] = 0;
3072 		} else {
3073 			if (vport->cfg_log_verbose & LOG_LINK_EVENT) {
3074 				int numalpa, j, k;
3075 				union {
3076 					uint8_t pamap[16];
3077 					struct {
3078 						uint32_t wd1;
3079 						uint32_t wd2;
3080 						uint32_t wd3;
3081 						uint32_t wd4;
3082 					} pa;
3083 				} un;
3084 				numalpa = phba->alpa_map[0];
3085 				j = 0;
3086 				while (j < numalpa) {
3087 					memset(un.pamap, 0, 16);
3088 					for (k = 1; j < numalpa; k++) {
3089 						un.pamap[k - 1] =
3090 							phba->alpa_map[j + 1];
3091 						j++;
3092 						if (k == 16)
3093 							break;
3094 					}
3095 					/* Link Up Event ALPA map */
3096 					lpfc_printf_log(phba,
3097 							KERN_WARNING,
3098 							LOG_LINK_EVENT,
3099 							"1304 Link Up Event "
3100 							"ALPA map Data: x%x "
3101 							"x%x x%x x%x\n",
3102 							un.pa.wd1, un.pa.wd2,
3103 							un.pa.wd3, un.pa.wd4);
3104 				}
3105 			}
3106 		}
3107 	} else {
3108 		if (!(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)) {
3109 			if (phba->max_vpi && phba->cfg_enable_npiv &&
3110 			   (phba->sli_rev >= LPFC_SLI_REV3))
3111 				phba->sli3_options |= LPFC_SLI3_NPIV_ENABLED;
3112 		}
3113 		vport->fc_myDID = phba->fc_pref_DID;
3114 		fc_flags |= FC_LBIT;
3115 	}
3116 	spin_unlock_irq(&phba->hbalock);
3117 
3118 	if (fc_flags) {
3119 		spin_lock_irq(shost->host_lock);
3120 		vport->fc_flag |= fc_flags;
3121 		spin_unlock_irq(shost->host_lock);
3122 	}
3123 
3124 	lpfc_linkup(phba);
3125 	sparam_mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
3126 	if (!sparam_mbox)
3127 		goto out;
3128 
3129 	rc = lpfc_read_sparam(phba, sparam_mbox, 0);
3130 	if (rc) {
3131 		mempool_free(sparam_mbox, phba->mbox_mem_pool);
3132 		goto out;
3133 	}
3134 	sparam_mbox->vport = vport;
3135 	sparam_mbox->mbox_cmpl = lpfc_mbx_cmpl_read_sparam;
3136 	rc = lpfc_sli_issue_mbox(phba, sparam_mbox, MBX_NOWAIT);
3137 	if (rc == MBX_NOT_FINISHED) {
3138 		mp = (struct lpfc_dmabuf *) sparam_mbox->context1;
3139 		lpfc_mbuf_free(phba, mp->virt, mp->phys);
3140 		kfree(mp);
3141 		mempool_free(sparam_mbox, phba->mbox_mem_pool);
3142 		goto out;
3143 	}
3144 
3145 	if (!(phba->hba_flag & HBA_FCOE_MODE)) {
3146 		cfglink_mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
3147 		if (!cfglink_mbox)
3148 			goto out;
3149 		vport->port_state = LPFC_LOCAL_CFG_LINK;
3150 		lpfc_config_link(phba, cfglink_mbox);
3151 		cfglink_mbox->vport = vport;
3152 		cfglink_mbox->mbox_cmpl = lpfc_mbx_cmpl_local_config_link;
3153 		rc = lpfc_sli_issue_mbox(phba, cfglink_mbox, MBX_NOWAIT);
3154 		if (rc == MBX_NOT_FINISHED) {
3155 			mempool_free(cfglink_mbox, phba->mbox_mem_pool);
3156 			goto out;
3157 		}
3158 	} else {
3159 		vport->port_state = LPFC_VPORT_UNKNOWN;
3160 		/*
3161 		 * Add the driver's default FCF record at FCF index 0 now. This
3162 		 * is phase 1 implementation that support FCF index 0 and driver
3163 		 * defaults.
3164 		 */
3165 		if (!(phba->hba_flag & HBA_FIP_SUPPORT)) {
3166 			fcf_record = kzalloc(sizeof(struct fcf_record),
3167 					GFP_KERNEL);
3168 			if (unlikely(!fcf_record)) {
3169 				lpfc_printf_log(phba, KERN_ERR,
3170 					LOG_MBOX | LOG_SLI,
3171 					"2554 Could not allocate memory for "
3172 					"fcf record\n");
3173 				rc = -ENODEV;
3174 				goto out;
3175 			}
3176 
3177 			lpfc_sli4_build_dflt_fcf_record(phba, fcf_record,
3178 						LPFC_FCOE_FCF_DEF_INDEX);
3179 			rc = lpfc_sli4_add_fcf_record(phba, fcf_record);
3180 			if (unlikely(rc)) {
3181 				lpfc_printf_log(phba, KERN_ERR,
3182 					LOG_MBOX | LOG_SLI,
3183 					"2013 Could not manually add FCF "
3184 					"record 0, status %d\n", rc);
3185 				rc = -ENODEV;
3186 				kfree(fcf_record);
3187 				goto out;
3188 			}
3189 			kfree(fcf_record);
3190 		}
3191 		/*
3192 		 * The driver is expected to do FIP/FCF. Call the port
3193 		 * and get the FCF Table.
3194 		 */
3195 		spin_lock_irq(&phba->hbalock);
3196 		if (phba->hba_flag & FCF_TS_INPROG) {
3197 			spin_unlock_irq(&phba->hbalock);
3198 			return;
3199 		}
3200 		/* This is the initial FCF discovery scan */
3201 		phba->fcf.fcf_flag |= FCF_INIT_DISC;
3202 		spin_unlock_irq(&phba->hbalock);
3203 		lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY,
3204 				"2778 Start FCF table scan at linkup\n");
3205 		rc = lpfc_sli4_fcf_scan_read_fcf_rec(phba,
3206 						     LPFC_FCOE_FCF_GET_FIRST);
3207 		if (rc) {
3208 			spin_lock_irq(&phba->hbalock);
3209 			phba->fcf.fcf_flag &= ~FCF_INIT_DISC;
3210 			spin_unlock_irq(&phba->hbalock);
3211 			goto out;
3212 		}
3213 		/* Reset FCF roundrobin bmask for new discovery */
3214 		lpfc_sli4_clear_fcf_rr_bmask(phba);
3215 	}
3216 
3217 	return;
3218 out:
3219 	lpfc_vport_set_state(vport, FC_VPORT_FAILED);
3220 	lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
3221 			 "0263 Discovery Mailbox error: state: 0x%x : %p %p\n",
3222 			 vport->port_state, sparam_mbox, cfglink_mbox);
3223 	lpfc_issue_clear_la(phba, vport);
3224 	return;
3225 }
3226 
3227 static void
3228 lpfc_enable_la(struct lpfc_hba *phba)
3229 {
3230 	uint32_t control;
3231 	struct lpfc_sli *psli = &phba->sli;
3232 	spin_lock_irq(&phba->hbalock);
3233 	psli->sli_flag |= LPFC_PROCESS_LA;
3234 	if (phba->sli_rev <= LPFC_SLI_REV3) {
3235 		control = readl(phba->HCregaddr);
3236 		control |= HC_LAINT_ENA;
3237 		writel(control, phba->HCregaddr);
3238 		readl(phba->HCregaddr); /* flush */
3239 	}
3240 	spin_unlock_irq(&phba->hbalock);
3241 }
3242 
3243 static void
3244 lpfc_mbx_issue_link_down(struct lpfc_hba *phba)
3245 {
3246 	lpfc_linkdown(phba);
3247 	lpfc_enable_la(phba);
3248 	lpfc_unregister_unused_fcf(phba);
3249 	/* turn on Link Attention interrupts - no CLEAR_LA needed */
3250 }
3251 
3252 
3253 /*
3254  * This routine handles processing a READ_TOPOLOGY mailbox
3255  * command upon completion. It is setup in the LPFC_MBOXQ
3256  * as the completion routine when the command is
3257  * handed off to the SLI layer.
3258  */
3259 void
3260 lpfc_mbx_cmpl_read_topology(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
3261 {
3262 	struct lpfc_vport *vport = pmb->vport;
3263 	struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
3264 	struct lpfc_mbx_read_top *la;
3265 	MAILBOX_t *mb = &pmb->u.mb;
3266 	struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
3267 
3268 	/* Unblock ELS traffic */
3269 	phba->sli.ring[LPFC_ELS_RING].flag &= ~LPFC_STOP_IOCB_EVENT;
3270 	/* Check for error */
3271 	if (mb->mbxStatus) {
3272 		lpfc_printf_log(phba, KERN_INFO, LOG_LINK_EVENT,
3273 				"1307 READ_LA mbox error x%x state x%x\n",
3274 				mb->mbxStatus, vport->port_state);
3275 		lpfc_mbx_issue_link_down(phba);
3276 		phba->link_state = LPFC_HBA_ERROR;
3277 		goto lpfc_mbx_cmpl_read_topology_free_mbuf;
3278 	}
3279 
3280 	la = (struct lpfc_mbx_read_top *) &pmb->u.mb.un.varReadTop;
3281 
3282 	memcpy(&phba->alpa_map[0], mp->virt, 128);
3283 
3284 	spin_lock_irq(shost->host_lock);
3285 	if (bf_get(lpfc_mbx_read_top_pb, la))
3286 		vport->fc_flag |= FC_BYPASSED_MODE;
3287 	else
3288 		vport->fc_flag &= ~FC_BYPASSED_MODE;
3289 	spin_unlock_irq(shost->host_lock);
3290 
3291 	if (phba->fc_eventTag <= la->eventTag) {
3292 		phba->fc_stat.LinkMultiEvent++;
3293 		if (bf_get(lpfc_mbx_read_top_att_type, la) == LPFC_ATT_LINK_UP)
3294 			if (phba->fc_eventTag != 0)
3295 				lpfc_linkdown(phba);
3296 	}
3297 
3298 	phba->fc_eventTag = la->eventTag;
3299 	if (phba->sli_rev < LPFC_SLI_REV4) {
3300 		spin_lock_irq(&phba->hbalock);
3301 		if (bf_get(lpfc_mbx_read_top_mm, la))
3302 			phba->sli.sli_flag |= LPFC_MENLO_MAINT;
3303 		else
3304 			phba->sli.sli_flag &= ~LPFC_MENLO_MAINT;
3305 		spin_unlock_irq(&phba->hbalock);
3306 	}
3307 
3308 	phba->link_events++;
3309 	if ((bf_get(lpfc_mbx_read_top_att_type, la) == LPFC_ATT_LINK_UP) &&
3310 	    !(phba->sli.sli_flag & LPFC_MENLO_MAINT)) {
3311 		phba->fc_stat.LinkUp++;
3312 		if (phba->link_flag & LS_LOOPBACK_MODE) {
3313 			lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
3314 					"1306 Link Up Event in loop back mode "
3315 					"x%x received Data: x%x x%x x%x x%x\n",
3316 					la->eventTag, phba->fc_eventTag,
3317 					bf_get(lpfc_mbx_read_top_alpa_granted,
3318 					       la),
3319 					bf_get(lpfc_mbx_read_top_link_spd, la),
3320 					phba->alpa_map[0]);
3321 		} else {
3322 			lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
3323 					"1303 Link Up Event x%x received "
3324 					"Data: x%x x%x x%x x%x x%x x%x %d\n",
3325 					la->eventTag, phba->fc_eventTag,
3326 					bf_get(lpfc_mbx_read_top_alpa_granted,
3327 					       la),
3328 					bf_get(lpfc_mbx_read_top_link_spd, la),
3329 					phba->alpa_map[0],
3330 					bf_get(lpfc_mbx_read_top_mm, la),
3331 					bf_get(lpfc_mbx_read_top_fa, la),
3332 					phba->wait_4_mlo_maint_flg);
3333 		}
3334 		lpfc_mbx_process_link_up(phba, la);
3335 	} else if (bf_get(lpfc_mbx_read_top_att_type, la) ==
3336 		   LPFC_ATT_LINK_DOWN) {
3337 		phba->fc_stat.LinkDown++;
3338 		if (phba->link_flag & LS_LOOPBACK_MODE)
3339 			lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
3340 				"1308 Link Down Event in loop back mode "
3341 				"x%x received "
3342 				"Data: x%x x%x x%x\n",
3343 				la->eventTag, phba->fc_eventTag,
3344 				phba->pport->port_state, vport->fc_flag);
3345 		else
3346 			lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
3347 				"1305 Link Down Event x%x received "
3348 				"Data: x%x x%x x%x x%x x%x\n",
3349 				la->eventTag, phba->fc_eventTag,
3350 				phba->pport->port_state, vport->fc_flag,
3351 				bf_get(lpfc_mbx_read_top_mm, la),
3352 				bf_get(lpfc_mbx_read_top_fa, la));
3353 		lpfc_mbx_issue_link_down(phba);
3354 	}
3355 	if ((phba->sli.sli_flag & LPFC_MENLO_MAINT) &&
3356 	    ((bf_get(lpfc_mbx_read_top_att_type, la) == LPFC_ATT_LINK_UP))) {
3357 		if (phba->link_state != LPFC_LINK_DOWN) {
3358 			phba->fc_stat.LinkDown++;
3359 			lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
3360 				"1312 Link Down Event x%x received "
3361 				"Data: x%x x%x x%x\n",
3362 				la->eventTag, phba->fc_eventTag,
3363 				phba->pport->port_state, vport->fc_flag);
3364 			lpfc_mbx_issue_link_down(phba);
3365 		} else
3366 			lpfc_enable_la(phba);
3367 
3368 		lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
3369 				"1310 Menlo Maint Mode Link up Event x%x rcvd "
3370 				"Data: x%x x%x x%x\n",
3371 				la->eventTag, phba->fc_eventTag,
3372 				phba->pport->port_state, vport->fc_flag);
3373 		/*
3374 		 * The cmnd that triggered this will be waiting for this
3375 		 * signal.
3376 		 */
3377 		/* WAKEUP for MENLO_SET_MODE or MENLO_RESET command. */
3378 		if (phba->wait_4_mlo_maint_flg) {
3379 			phba->wait_4_mlo_maint_flg = 0;
3380 			wake_up_interruptible(&phba->wait_4_mlo_m_q);
3381 		}
3382 	}
3383 
3384 	if ((phba->sli_rev < LPFC_SLI_REV4) &&
3385 	    bf_get(lpfc_mbx_read_top_fa, la)) {
3386 		if (phba->sli.sli_flag & LPFC_MENLO_MAINT)
3387 			lpfc_issue_clear_la(phba, vport);
3388 		lpfc_printf_log(phba, KERN_INFO, LOG_LINK_EVENT,
3389 				"1311 fa %d\n",
3390 				bf_get(lpfc_mbx_read_top_fa, la));
3391 	}
3392 
3393 lpfc_mbx_cmpl_read_topology_free_mbuf:
3394 	lpfc_mbuf_free(phba, mp->virt, mp->phys);
3395 	kfree(mp);
3396 	mempool_free(pmb, phba->mbox_mem_pool);
3397 	return;
3398 }
3399 
3400 /*
3401  * This routine handles processing a REG_LOGIN mailbox
3402  * command upon completion. It is setup in the LPFC_MBOXQ
3403  * as the completion routine when the command is
3404  * handed off to the SLI layer.
3405  */
3406 void
3407 lpfc_mbx_cmpl_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
3408 {
3409 	struct lpfc_vport  *vport = pmb->vport;
3410 	struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
3411 	struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) pmb->context2;
3412 	struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
3413 
3414 	pmb->context1 = NULL;
3415 	pmb->context2 = NULL;
3416 
3417 	if (ndlp->nlp_flag & NLP_REG_LOGIN_SEND)
3418 		ndlp->nlp_flag &= ~NLP_REG_LOGIN_SEND;
3419 
3420 	if (ndlp->nlp_flag & NLP_IGNR_REG_CMPL ||
3421 	    ndlp->nlp_state != NLP_STE_REG_LOGIN_ISSUE) {
3422 		/* We rcvd a rscn after issuing this
3423 		 * mbox reg login, we may have cycled
3424 		 * back through the state and be
3425 		 * back at reg login state so this
3426 		 * mbox needs to be ignored becase
3427 		 * there is another reg login in
3428 		 * process.
3429 		 */
3430 		spin_lock_irq(shost->host_lock);
3431 		ndlp->nlp_flag &= ~NLP_IGNR_REG_CMPL;
3432 		spin_unlock_irq(shost->host_lock);
3433 	} else
3434 		/* Good status, call state machine */
3435 		lpfc_disc_state_machine(vport, ndlp, pmb,
3436 				NLP_EVT_CMPL_REG_LOGIN);
3437 
3438 	lpfc_mbuf_free(phba, mp->virt, mp->phys);
3439 	kfree(mp);
3440 	mempool_free(pmb, phba->mbox_mem_pool);
3441 	/* decrement the node reference count held for this callback
3442 	 * function.
3443 	 */
3444 	lpfc_nlp_put(ndlp);
3445 
3446 	return;
3447 }
3448 
3449 static void
3450 lpfc_mbx_cmpl_unreg_vpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
3451 {
3452 	MAILBOX_t *mb = &pmb->u.mb;
3453 	struct lpfc_vport *vport = pmb->vport;
3454 	struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
3455 
3456 	switch (mb->mbxStatus) {
3457 	case 0x0011:
3458 	case 0x0020:
3459 		lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
3460 				 "0911 cmpl_unreg_vpi, mb status = 0x%x\n",
3461 				 mb->mbxStatus);
3462 		break;
3463 	/* If VPI is busy, reset the HBA */
3464 	case 0x9700:
3465 		lpfc_printf_vlog(vport, KERN_ERR, LOG_NODE,
3466 			"2798 Unreg_vpi failed vpi 0x%x, mb status = 0x%x\n",
3467 			vport->vpi, mb->mbxStatus);
3468 		if (!(phba->pport->load_flag & FC_UNLOADING))
3469 			lpfc_workq_post_event(phba, NULL, NULL,
3470 				LPFC_EVT_RESET_HBA);
3471 	}
3472 	spin_lock_irq(shost->host_lock);
3473 	vport->vpi_state &= ~LPFC_VPI_REGISTERED;
3474 	vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
3475 	spin_unlock_irq(shost->host_lock);
3476 	vport->unreg_vpi_cmpl = VPORT_OK;
3477 	mempool_free(pmb, phba->mbox_mem_pool);
3478 	lpfc_cleanup_vports_rrqs(vport, NULL);
3479 	/*
3480 	 * This shost reference might have been taken at the beginning of
3481 	 * lpfc_vport_delete()
3482 	 */
3483 	if ((vport->load_flag & FC_UNLOADING) && (vport != phba->pport))
3484 		scsi_host_put(shost);
3485 }
3486 
3487 int
3488 lpfc_mbx_unreg_vpi(struct lpfc_vport *vport)
3489 {
3490 	struct lpfc_hba  *phba = vport->phba;
3491 	LPFC_MBOXQ_t *mbox;
3492 	int rc;
3493 
3494 	mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
3495 	if (!mbox)
3496 		return 1;
3497 
3498 	lpfc_unreg_vpi(phba, vport->vpi, mbox);
3499 	mbox->vport = vport;
3500 	mbox->mbox_cmpl = lpfc_mbx_cmpl_unreg_vpi;
3501 	rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
3502 	if (rc == MBX_NOT_FINISHED) {
3503 		lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX | LOG_VPORT,
3504 				 "1800 Could not issue unreg_vpi\n");
3505 		mempool_free(mbox, phba->mbox_mem_pool);
3506 		vport->unreg_vpi_cmpl = VPORT_ERROR;
3507 		return rc;
3508 	}
3509 	return 0;
3510 }
3511 
3512 static void
3513 lpfc_mbx_cmpl_reg_vpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
3514 {
3515 	struct lpfc_vport *vport = pmb->vport;
3516 	struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
3517 	MAILBOX_t *mb = &pmb->u.mb;
3518 
3519 	switch (mb->mbxStatus) {
3520 	case 0x0011:
3521 	case 0x9601:
3522 	case 0x9602:
3523 		lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
3524 				 "0912 cmpl_reg_vpi, mb status = 0x%x\n",
3525 				 mb->mbxStatus);
3526 		lpfc_vport_set_state(vport, FC_VPORT_FAILED);
3527 		spin_lock_irq(shost->host_lock);
3528 		vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP);
3529 		spin_unlock_irq(shost->host_lock);
3530 		vport->fc_myDID = 0;
3531 		goto out;
3532 	}
3533 
3534 	spin_lock_irq(shost->host_lock);
3535 	vport->vpi_state |= LPFC_VPI_REGISTERED;
3536 	vport->fc_flag &= ~FC_VPORT_NEEDS_REG_VPI;
3537 	spin_unlock_irq(shost->host_lock);
3538 	vport->num_disc_nodes = 0;
3539 	/* go thru NPR list and issue ELS PLOGIs */
3540 	if (vport->fc_npr_cnt)
3541 		lpfc_els_disc_plogi(vport);
3542 
3543 	if (!vport->num_disc_nodes) {
3544 		spin_lock_irq(shost->host_lock);
3545 		vport->fc_flag &= ~FC_NDISC_ACTIVE;
3546 		spin_unlock_irq(shost->host_lock);
3547 		lpfc_can_disctmo(vport);
3548 	}
3549 	vport->port_state = LPFC_VPORT_READY;
3550 
3551 out:
3552 	mempool_free(pmb, phba->mbox_mem_pool);
3553 	return;
3554 }
3555 
3556 /**
3557  * lpfc_create_static_vport - Read HBA config region to create static vports.
3558  * @phba: pointer to lpfc hba data structure.
3559  *
3560  * This routine issue a DUMP mailbox command for config region 22 to get
3561  * the list of static vports to be created. The function create vports
3562  * based on the information returned from the HBA.
3563  **/
3564 void
3565 lpfc_create_static_vport(struct lpfc_hba *phba)
3566 {
3567 	LPFC_MBOXQ_t *pmb = NULL;
3568 	MAILBOX_t *mb;
3569 	struct static_vport_info *vport_info;
3570 	int mbx_wait_rc = 0, i;
3571 	struct fc_vport_identifiers vport_id;
3572 	struct fc_vport *new_fc_vport;
3573 	struct Scsi_Host *shost;
3574 	struct lpfc_vport *vport;
3575 	uint16_t offset = 0;
3576 	uint8_t *vport_buff;
3577 	struct lpfc_dmabuf *mp;
3578 	uint32_t byte_count = 0;
3579 
3580 	pmb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
3581 	if (!pmb) {
3582 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
3583 				"0542 lpfc_create_static_vport failed to"
3584 				" allocate mailbox memory\n");
3585 		return;
3586 	}
3587 	memset(pmb, 0, sizeof(LPFC_MBOXQ_t));
3588 	mb = &pmb->u.mb;
3589 
3590 	vport_info = kzalloc(sizeof(struct static_vport_info), GFP_KERNEL);
3591 	if (!vport_info) {
3592 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
3593 				"0543 lpfc_create_static_vport failed to"
3594 				" allocate vport_info\n");
3595 		mempool_free(pmb, phba->mbox_mem_pool);
3596 		return;
3597 	}
3598 
3599 	vport_buff = (uint8_t *) vport_info;
3600 	do {
3601 		/* free dma buffer from previous round */
3602 		if (pmb->context1) {
3603 			mp = (struct lpfc_dmabuf *)pmb->context1;
3604 			lpfc_mbuf_free(phba, mp->virt, mp->phys);
3605 			kfree(mp);
3606 		}
3607 		if (lpfc_dump_static_vport(phba, pmb, offset))
3608 			goto out;
3609 
3610 		pmb->vport = phba->pport;
3611 		mbx_wait_rc = lpfc_sli_issue_mbox_wait(phba, pmb,
3612 							LPFC_MBOX_TMO);
3613 
3614 		if ((mbx_wait_rc != MBX_SUCCESS) || mb->mbxStatus) {
3615 			lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
3616 				"0544 lpfc_create_static_vport failed to"
3617 				" issue dump mailbox command ret 0x%x "
3618 				"status 0x%x\n",
3619 				mbx_wait_rc, mb->mbxStatus);
3620 			goto out;
3621 		}
3622 
3623 		if (phba->sli_rev == LPFC_SLI_REV4) {
3624 			byte_count = pmb->u.mqe.un.mb_words[5];
3625 			mp = (struct lpfc_dmabuf *)pmb->context1;
3626 			if (byte_count > sizeof(struct static_vport_info) -
3627 					offset)
3628 				byte_count = sizeof(struct static_vport_info)
3629 					- offset;
3630 			memcpy(vport_buff + offset, mp->virt, byte_count);
3631 			offset += byte_count;
3632 		} else {
3633 			if (mb->un.varDmp.word_cnt >
3634 				sizeof(struct static_vport_info) - offset)
3635 				mb->un.varDmp.word_cnt =
3636 					sizeof(struct static_vport_info)
3637 						- offset;
3638 			byte_count = mb->un.varDmp.word_cnt;
3639 			lpfc_sli_pcimem_bcopy(((uint8_t *)mb) + DMP_RSP_OFFSET,
3640 				vport_buff + offset,
3641 				byte_count);
3642 
3643 			offset += byte_count;
3644 		}
3645 
3646 	} while (byte_count &&
3647 		offset < sizeof(struct static_vport_info));
3648 
3649 
3650 	if ((le32_to_cpu(vport_info->signature) != VPORT_INFO_SIG) ||
3651 		((le32_to_cpu(vport_info->rev) & VPORT_INFO_REV_MASK)
3652 			!= VPORT_INFO_REV)) {
3653 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
3654 			"0545 lpfc_create_static_vport bad"
3655 			" information header 0x%x 0x%x\n",
3656 			le32_to_cpu(vport_info->signature),
3657 			le32_to_cpu(vport_info->rev) & VPORT_INFO_REV_MASK);
3658 
3659 		goto out;
3660 	}
3661 
3662 	shost = lpfc_shost_from_vport(phba->pport);
3663 
3664 	for (i = 0; i < MAX_STATIC_VPORT_COUNT; i++) {
3665 		memset(&vport_id, 0, sizeof(vport_id));
3666 		vport_id.port_name = wwn_to_u64(vport_info->vport_list[i].wwpn);
3667 		vport_id.node_name = wwn_to_u64(vport_info->vport_list[i].wwnn);
3668 		if (!vport_id.port_name || !vport_id.node_name)
3669 			continue;
3670 
3671 		vport_id.roles = FC_PORT_ROLE_FCP_INITIATOR;
3672 		vport_id.vport_type = FC_PORTTYPE_NPIV;
3673 		vport_id.disable = false;
3674 		new_fc_vport = fc_vport_create(shost, 0, &vport_id);
3675 
3676 		if (!new_fc_vport) {
3677 			lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
3678 				"0546 lpfc_create_static_vport failed to"
3679 				" create vport\n");
3680 			continue;
3681 		}
3682 
3683 		vport = *(struct lpfc_vport **)new_fc_vport->dd_data;
3684 		vport->vport_flag |= STATIC_VPORT;
3685 	}
3686 
3687 out:
3688 	kfree(vport_info);
3689 	if (mbx_wait_rc != MBX_TIMEOUT) {
3690 		if (pmb->context1) {
3691 			mp = (struct lpfc_dmabuf *)pmb->context1;
3692 			lpfc_mbuf_free(phba, mp->virt, mp->phys);
3693 			kfree(mp);
3694 		}
3695 		mempool_free(pmb, phba->mbox_mem_pool);
3696 	}
3697 
3698 	return;
3699 }
3700 
3701 /*
3702  * This routine handles processing a Fabric REG_LOGIN mailbox
3703  * command upon completion. It is setup in the LPFC_MBOXQ
3704  * as the completion routine when the command is
3705  * handed off to the SLI layer.
3706  */
3707 void
3708 lpfc_mbx_cmpl_fabric_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
3709 {
3710 	struct lpfc_vport *vport = pmb->vport;
3711 	MAILBOX_t *mb = &pmb->u.mb;
3712 	struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
3713 	struct lpfc_nodelist *ndlp;
3714 	struct Scsi_Host *shost;
3715 
3716 	ndlp = (struct lpfc_nodelist *) pmb->context2;
3717 	pmb->context1 = NULL;
3718 	pmb->context2 = NULL;
3719 
3720 	if (mb->mbxStatus) {
3721 		lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
3722 				 "0258 Register Fabric login error: 0x%x\n",
3723 				 mb->mbxStatus);
3724 		lpfc_mbuf_free(phba, mp->virt, mp->phys);
3725 		kfree(mp);
3726 		mempool_free(pmb, phba->mbox_mem_pool);
3727 
3728 		if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
3729 			/* FLOGI failed, use loop map to make discovery list */
3730 			lpfc_disc_list_loopmap(vport);
3731 
3732 			/* Start discovery */
3733 			lpfc_disc_start(vport);
3734 			/* Decrement the reference count to ndlp after the
3735 			 * reference to the ndlp are done.
3736 			 */
3737 			lpfc_nlp_put(ndlp);
3738 			return;
3739 		}
3740 
3741 		lpfc_vport_set_state(vport, FC_VPORT_FAILED);
3742 		/* Decrement the reference count to ndlp after the reference
3743 		 * to the ndlp are done.
3744 		 */
3745 		lpfc_nlp_put(ndlp);
3746 		return;
3747 	}
3748 
3749 	if (phba->sli_rev < LPFC_SLI_REV4)
3750 		ndlp->nlp_rpi = mb->un.varWords[0];
3751 	ndlp->nlp_flag |= NLP_RPI_REGISTERED;
3752 	ndlp->nlp_type |= NLP_FABRIC;
3753 	lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
3754 
3755 	if (vport->port_state == LPFC_FABRIC_CFG_LINK) {
3756 		/* when physical port receive logo donot start
3757 		 * vport discovery */
3758 		if (!(vport->fc_flag & FC_LOGO_RCVD_DID_CHNG))
3759 			lpfc_start_fdiscs(phba);
3760 		else {
3761 			shost = lpfc_shost_from_vport(vport);
3762 			spin_lock_irq(shost->host_lock);
3763 			vport->fc_flag &= ~FC_LOGO_RCVD_DID_CHNG ;
3764 			spin_unlock_irq(shost->host_lock);
3765 		}
3766 		lpfc_do_scr_ns_plogi(phba, vport);
3767 	}
3768 
3769 	lpfc_mbuf_free(phba, mp->virt, mp->phys);
3770 	kfree(mp);
3771 	mempool_free(pmb, phba->mbox_mem_pool);
3772 
3773 	/* Drop the reference count from the mbox at the end after
3774 	 * all the current reference to the ndlp have been done.
3775 	 */
3776 	lpfc_nlp_put(ndlp);
3777 	return;
3778 }
3779 
3780 /*
3781  * This routine handles processing a NameServer REG_LOGIN mailbox
3782  * command upon completion. It is setup in the LPFC_MBOXQ
3783  * as the completion routine when the command is
3784  * handed off to the SLI layer.
3785  */
3786 void
3787 lpfc_mbx_cmpl_ns_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
3788 {
3789 	MAILBOX_t *mb = &pmb->u.mb;
3790 	struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
3791 	struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) pmb->context2;
3792 	struct lpfc_vport *vport = pmb->vport;
3793 
3794 	pmb->context1 = NULL;
3795 	pmb->context2 = NULL;
3796 
3797 	if (mb->mbxStatus) {
3798 out:
3799 		lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
3800 				 "0260 Register NameServer error: 0x%x\n",
3801 				 mb->mbxStatus);
3802 		/* decrement the node reference count held for this
3803 		 * callback function.
3804 		 */
3805 		lpfc_nlp_put(ndlp);
3806 		lpfc_mbuf_free(phba, mp->virt, mp->phys);
3807 		kfree(mp);
3808 		mempool_free(pmb, phba->mbox_mem_pool);
3809 
3810 		/* If no other thread is using the ndlp, free it */
3811 		lpfc_nlp_not_used(ndlp);
3812 
3813 		if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
3814 			/*
3815 			 * RegLogin failed, use loop map to make discovery
3816 			 * list
3817 			 */
3818 			lpfc_disc_list_loopmap(vport);
3819 
3820 			/* Start discovery */
3821 			lpfc_disc_start(vport);
3822 			return;
3823 		}
3824 		lpfc_vport_set_state(vport, FC_VPORT_FAILED);
3825 		return;
3826 	}
3827 
3828 	if (phba->sli_rev < LPFC_SLI_REV4)
3829 		ndlp->nlp_rpi = mb->un.varWords[0];
3830 	ndlp->nlp_flag |= NLP_RPI_REGISTERED;
3831 	ndlp->nlp_type |= NLP_FABRIC;
3832 	lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
3833 
3834 	if (vport->port_state < LPFC_VPORT_READY) {
3835 		/* Link up discovery requires Fabric registration. */
3836 		lpfc_ns_cmd(vport, SLI_CTNS_RFF_ID, 0, 0); /* Do this first! */
3837 		lpfc_ns_cmd(vport, SLI_CTNS_RNN_ID, 0, 0);
3838 		lpfc_ns_cmd(vport, SLI_CTNS_RSNN_NN, 0, 0);
3839 		lpfc_ns_cmd(vport, SLI_CTNS_RSPN_ID, 0, 0);
3840 		lpfc_ns_cmd(vport, SLI_CTNS_RFT_ID, 0, 0);
3841 
3842 		/* Issue SCR just before NameServer GID_FT Query */
3843 		lpfc_issue_els_scr(vport, SCR_DID, 0);
3844 	}
3845 
3846 	vport->fc_ns_retry = 0;
3847 	/* Good status, issue CT Request to NameServer */
3848 	if (lpfc_ns_cmd(vport, SLI_CTNS_GID_FT, 0, 0)) {
3849 		/* Cannot issue NameServer Query, so finish up discovery */
3850 		goto out;
3851 	}
3852 
3853 	/* decrement the node reference count held for this
3854 	 * callback function.
3855 	 */
3856 	lpfc_nlp_put(ndlp);
3857 	lpfc_mbuf_free(phba, mp->virt, mp->phys);
3858 	kfree(mp);
3859 	mempool_free(pmb, phba->mbox_mem_pool);
3860 
3861 	return;
3862 }
3863 
3864 static void
3865 lpfc_register_remote_port(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
3866 {
3867 	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3868 	struct fc_rport  *rport;
3869 	struct lpfc_rport_data *rdata;
3870 	struct fc_rport_identifiers rport_ids;
3871 	struct lpfc_hba  *phba = vport->phba;
3872 
3873 	/* Remote port has reappeared. Re-register w/ FC transport */
3874 	rport_ids.node_name = wwn_to_u64(ndlp->nlp_nodename.u.wwn);
3875 	rport_ids.port_name = wwn_to_u64(ndlp->nlp_portname.u.wwn);
3876 	rport_ids.port_id = ndlp->nlp_DID;
3877 	rport_ids.roles = FC_RPORT_ROLE_UNKNOWN;
3878 
3879 	/*
3880 	 * We leave our node pointer in rport->dd_data when we unregister a
3881 	 * FCP target port.  But fc_remote_port_add zeros the space to which
3882 	 * rport->dd_data points.  So, if we're reusing a previously
3883 	 * registered port, drop the reference that we took the last time we
3884 	 * registered the port.
3885 	 */
3886 	if (ndlp->rport && ndlp->rport->dd_data &&
3887 	    ((struct lpfc_rport_data *) ndlp->rport->dd_data)->pnode == ndlp)
3888 		lpfc_nlp_put(ndlp);
3889 
3890 	lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
3891 		"rport add:       did:x%x flg:x%x type x%x",
3892 		ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type);
3893 
3894 	/* Don't add the remote port if unloading. */
3895 	if (vport->load_flag & FC_UNLOADING)
3896 		return;
3897 
3898 	ndlp->rport = rport = fc_remote_port_add(shost, 0, &rport_ids);
3899 	if (!rport || !get_device(&rport->dev)) {
3900 		dev_printk(KERN_WARNING, &phba->pcidev->dev,
3901 			   "Warning: fc_remote_port_add failed\n");
3902 		return;
3903 	}
3904 
3905 	/* initialize static port data */
3906 	rport->maxframe_size = ndlp->nlp_maxframe;
3907 	rport->supported_classes = ndlp->nlp_class_sup;
3908 	rdata = rport->dd_data;
3909 	rdata->pnode = lpfc_nlp_get(ndlp);
3910 
3911 	if (ndlp->nlp_type & NLP_FCP_TARGET)
3912 		rport_ids.roles |= FC_RPORT_ROLE_FCP_TARGET;
3913 	if (ndlp->nlp_type & NLP_FCP_INITIATOR)
3914 		rport_ids.roles |= FC_RPORT_ROLE_FCP_INITIATOR;
3915 
3916 	if (rport_ids.roles !=  FC_RPORT_ROLE_UNKNOWN)
3917 		fc_remote_port_rolechg(rport, rport_ids.roles);
3918 
3919 	lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_NODE,
3920 			 "3183 rport register x%06x, rport %p role x%x\n",
3921 			 ndlp->nlp_DID, rport, rport_ids.roles);
3922 
3923 	if ((rport->scsi_target_id != -1) &&
3924 	    (rport->scsi_target_id < LPFC_MAX_TARGET)) {
3925 		ndlp->nlp_sid = rport->scsi_target_id;
3926 	}
3927 	return;
3928 }
3929 
3930 static void
3931 lpfc_unregister_remote_port(struct lpfc_nodelist *ndlp)
3932 {
3933 	struct fc_rport *rport = ndlp->rport;
3934 
3935 	lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_RPORT,
3936 		"rport delete:    did:x%x flg:x%x type x%x",
3937 		ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type);
3938 
3939 	lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_NODE,
3940 			 "3184 rport unregister x%06x, rport %p\n",
3941 			 ndlp->nlp_DID, rport);
3942 
3943 	fc_remote_port_delete(rport);
3944 
3945 	return;
3946 }
3947 
3948 static void
3949 lpfc_nlp_counters(struct lpfc_vport *vport, int state, int count)
3950 {
3951 	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3952 
3953 	spin_lock_irq(shost->host_lock);
3954 	switch (state) {
3955 	case NLP_STE_UNUSED_NODE:
3956 		vport->fc_unused_cnt += count;
3957 		break;
3958 	case NLP_STE_PLOGI_ISSUE:
3959 		vport->fc_plogi_cnt += count;
3960 		break;
3961 	case NLP_STE_ADISC_ISSUE:
3962 		vport->fc_adisc_cnt += count;
3963 		break;
3964 	case NLP_STE_REG_LOGIN_ISSUE:
3965 		vport->fc_reglogin_cnt += count;
3966 		break;
3967 	case NLP_STE_PRLI_ISSUE:
3968 		vport->fc_prli_cnt += count;
3969 		break;
3970 	case NLP_STE_UNMAPPED_NODE:
3971 		vport->fc_unmap_cnt += count;
3972 		break;
3973 	case NLP_STE_MAPPED_NODE:
3974 		vport->fc_map_cnt += count;
3975 		break;
3976 	case NLP_STE_NPR_NODE:
3977 		if (vport->fc_npr_cnt == 0 && count == -1)
3978 			vport->fc_npr_cnt = 0;
3979 		else
3980 			vport->fc_npr_cnt += count;
3981 		break;
3982 	}
3983 	spin_unlock_irq(shost->host_lock);
3984 }
3985 
3986 static void
3987 lpfc_nlp_state_cleanup(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
3988 		       int old_state, int new_state)
3989 {
3990 	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3991 
3992 	if (new_state == NLP_STE_UNMAPPED_NODE) {
3993 		ndlp->nlp_flag &= ~NLP_NODEV_REMOVE;
3994 		ndlp->nlp_type |= NLP_FC_NODE;
3995 	}
3996 	if (new_state == NLP_STE_MAPPED_NODE)
3997 		ndlp->nlp_flag &= ~NLP_NODEV_REMOVE;
3998 	if (new_state == NLP_STE_NPR_NODE)
3999 		ndlp->nlp_flag &= ~NLP_RCV_PLOGI;
4000 
4001 	/* Transport interface */
4002 	if (ndlp->rport && (old_state == NLP_STE_MAPPED_NODE ||
4003 			    old_state == NLP_STE_UNMAPPED_NODE)) {
4004 		vport->phba->nport_event_cnt++;
4005 		lpfc_unregister_remote_port(ndlp);
4006 	}
4007 
4008 	if (new_state ==  NLP_STE_MAPPED_NODE ||
4009 	    new_state == NLP_STE_UNMAPPED_NODE) {
4010 		vport->phba->nport_event_cnt++;
4011 		/*
4012 		 * Tell the fc transport about the port, if we haven't
4013 		 * already. If we have, and it's a scsi entity, be
4014 		 * sure to unblock any attached scsi devices
4015 		 */
4016 		lpfc_register_remote_port(vport, ndlp);
4017 	}
4018 	if ((new_state ==  NLP_STE_MAPPED_NODE) &&
4019 		(vport->stat_data_enabled)) {
4020 		/*
4021 		 * A new target is discovered, if there is no buffer for
4022 		 * statistical data collection allocate buffer.
4023 		 */
4024 		ndlp->lat_data = kcalloc(LPFC_MAX_BUCKET_COUNT,
4025 					 sizeof(struct lpfc_scsicmd_bkt),
4026 					 GFP_KERNEL);
4027 
4028 		if (!ndlp->lat_data)
4029 			lpfc_printf_vlog(vport, KERN_ERR, LOG_NODE,
4030 				"0286 lpfc_nlp_state_cleanup failed to "
4031 				"allocate statistical data buffer DID "
4032 				"0x%x\n", ndlp->nlp_DID);
4033 	}
4034 	/*
4035 	 * if we added to Mapped list, but the remote port
4036 	 * registration failed or assigned a target id outside
4037 	 * our presentable range - move the node to the
4038 	 * Unmapped List
4039 	 */
4040 	if (new_state == NLP_STE_MAPPED_NODE &&
4041 	    (!ndlp->rport ||
4042 	     ndlp->rport->scsi_target_id == -1 ||
4043 	     ndlp->rport->scsi_target_id >= LPFC_MAX_TARGET)) {
4044 		spin_lock_irq(shost->host_lock);
4045 		ndlp->nlp_flag |= NLP_TGT_NO_SCSIID;
4046 		spin_unlock_irq(shost->host_lock);
4047 		lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
4048 	}
4049 }
4050 
4051 static char *
4052 lpfc_nlp_state_name(char *buffer, size_t size, int state)
4053 {
4054 	static char *states[] = {
4055 		[NLP_STE_UNUSED_NODE] = "UNUSED",
4056 		[NLP_STE_PLOGI_ISSUE] = "PLOGI",
4057 		[NLP_STE_ADISC_ISSUE] = "ADISC",
4058 		[NLP_STE_REG_LOGIN_ISSUE] = "REGLOGIN",
4059 		[NLP_STE_PRLI_ISSUE] = "PRLI",
4060 		[NLP_STE_LOGO_ISSUE] = "LOGO",
4061 		[NLP_STE_UNMAPPED_NODE] = "UNMAPPED",
4062 		[NLP_STE_MAPPED_NODE] = "MAPPED",
4063 		[NLP_STE_NPR_NODE] = "NPR",
4064 	};
4065 
4066 	if (state < NLP_STE_MAX_STATE && states[state])
4067 		strlcpy(buffer, states[state], size);
4068 	else
4069 		snprintf(buffer, size, "unknown (%d)", state);
4070 	return buffer;
4071 }
4072 
4073 void
4074 lpfc_nlp_set_state(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
4075 		   int state)
4076 {
4077 	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4078 	int  old_state = ndlp->nlp_state;
4079 	char name1[16], name2[16];
4080 
4081 	lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
4082 			 "0904 NPort state transition x%06x, %s -> %s\n",
4083 			 ndlp->nlp_DID,
4084 			 lpfc_nlp_state_name(name1, sizeof(name1), old_state),
4085 			 lpfc_nlp_state_name(name2, sizeof(name2), state));
4086 
4087 	lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE,
4088 		"node statechg    did:x%x old:%d ste:%d",
4089 		ndlp->nlp_DID, old_state, state);
4090 
4091 	if (old_state == NLP_STE_NPR_NODE &&
4092 	    state != NLP_STE_NPR_NODE)
4093 		lpfc_cancel_retry_delay_tmo(vport, ndlp);
4094 	if (old_state == NLP_STE_UNMAPPED_NODE) {
4095 		ndlp->nlp_flag &= ~NLP_TGT_NO_SCSIID;
4096 		ndlp->nlp_type &= ~NLP_FC_NODE;
4097 	}
4098 
4099 	if (list_empty(&ndlp->nlp_listp)) {
4100 		spin_lock_irq(shost->host_lock);
4101 		list_add_tail(&ndlp->nlp_listp, &vport->fc_nodes);
4102 		spin_unlock_irq(shost->host_lock);
4103 	} else if (old_state)
4104 		lpfc_nlp_counters(vport, old_state, -1);
4105 
4106 	ndlp->nlp_state = state;
4107 	lpfc_nlp_counters(vport, state, 1);
4108 	lpfc_nlp_state_cleanup(vport, ndlp, old_state, state);
4109 }
4110 
4111 void
4112 lpfc_enqueue_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
4113 {
4114 	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4115 
4116 	if (list_empty(&ndlp->nlp_listp)) {
4117 		spin_lock_irq(shost->host_lock);
4118 		list_add_tail(&ndlp->nlp_listp, &vport->fc_nodes);
4119 		spin_unlock_irq(shost->host_lock);
4120 	}
4121 }
4122 
4123 void
4124 lpfc_dequeue_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
4125 {
4126 	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4127 
4128 	lpfc_cancel_retry_delay_tmo(vport, ndlp);
4129 	if (ndlp->nlp_state && !list_empty(&ndlp->nlp_listp))
4130 		lpfc_nlp_counters(vport, ndlp->nlp_state, -1);
4131 	spin_lock_irq(shost->host_lock);
4132 	list_del_init(&ndlp->nlp_listp);
4133 	spin_unlock_irq(shost->host_lock);
4134 	lpfc_nlp_state_cleanup(vport, ndlp, ndlp->nlp_state,
4135 				NLP_STE_UNUSED_NODE);
4136 }
4137 
4138 static void
4139 lpfc_disable_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
4140 {
4141 	lpfc_cancel_retry_delay_tmo(vport, ndlp);
4142 	if (ndlp->nlp_state && !list_empty(&ndlp->nlp_listp))
4143 		lpfc_nlp_counters(vport, ndlp->nlp_state, -1);
4144 	lpfc_nlp_state_cleanup(vport, ndlp, ndlp->nlp_state,
4145 				NLP_STE_UNUSED_NODE);
4146 }
4147 /**
4148  * lpfc_initialize_node - Initialize all fields of node object
4149  * @vport: Pointer to Virtual Port object.
4150  * @ndlp: Pointer to FC node object.
4151  * @did: FC_ID of the node.
4152  *
4153  * This function is always called when node object need to be initialized.
4154  * It initializes all the fields of the node object. Although the reference
4155  * to phba from @ndlp can be obtained indirectly through it's reference to
4156  * @vport, a direct reference to phba is taken here by @ndlp. This is due
4157  * to the life-span of the @ndlp might go beyond the existence of @vport as
4158  * the final release of ndlp is determined by its reference count. And, the
4159  * operation on @ndlp needs the reference to phba.
4160  **/
4161 static inline void
4162 lpfc_initialize_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
4163 	uint32_t did)
4164 {
4165 	INIT_LIST_HEAD(&ndlp->els_retry_evt.evt_listp);
4166 	INIT_LIST_HEAD(&ndlp->dev_loss_evt.evt_listp);
4167 	init_timer(&ndlp->nlp_delayfunc);
4168 	ndlp->nlp_delayfunc.function = lpfc_els_retry_delay;
4169 	ndlp->nlp_delayfunc.data = (unsigned long)ndlp;
4170 	ndlp->nlp_DID = did;
4171 	ndlp->vport = vport;
4172 	ndlp->phba = vport->phba;
4173 	ndlp->nlp_sid = NLP_NO_SID;
4174 	kref_init(&ndlp->kref);
4175 	NLP_INT_NODE_ACT(ndlp);
4176 	atomic_set(&ndlp->cmd_pending, 0);
4177 	ndlp->cmd_qdepth = vport->cfg_tgt_queue_depth;
4178 }
4179 
4180 struct lpfc_nodelist *
4181 lpfc_enable_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
4182 		 int state)
4183 {
4184 	struct lpfc_hba *phba = vport->phba;
4185 	uint32_t did;
4186 	unsigned long flags;
4187 	unsigned long *active_rrqs_xri_bitmap = NULL;
4188 
4189 	if (!ndlp)
4190 		return NULL;
4191 
4192 	spin_lock_irqsave(&phba->ndlp_lock, flags);
4193 	/* The ndlp should not be in memory free mode */
4194 	if (NLP_CHK_FREE_REQ(ndlp)) {
4195 		spin_unlock_irqrestore(&phba->ndlp_lock, flags);
4196 		lpfc_printf_vlog(vport, KERN_WARNING, LOG_NODE,
4197 				"0277 lpfc_enable_node: ndlp:x%p "
4198 				"usgmap:x%x refcnt:%d\n",
4199 				(void *)ndlp, ndlp->nlp_usg_map,
4200 				atomic_read(&ndlp->kref.refcount));
4201 		return NULL;
4202 	}
4203 	/* The ndlp should not already be in active mode */
4204 	if (NLP_CHK_NODE_ACT(ndlp)) {
4205 		spin_unlock_irqrestore(&phba->ndlp_lock, flags);
4206 		lpfc_printf_vlog(vport, KERN_WARNING, LOG_NODE,
4207 				"0278 lpfc_enable_node: ndlp:x%p "
4208 				"usgmap:x%x refcnt:%d\n",
4209 				(void *)ndlp, ndlp->nlp_usg_map,
4210 				atomic_read(&ndlp->kref.refcount));
4211 		return NULL;
4212 	}
4213 
4214 	/* Keep the original DID */
4215 	did = ndlp->nlp_DID;
4216 	if (phba->sli_rev == LPFC_SLI_REV4)
4217 		active_rrqs_xri_bitmap = ndlp->active_rrqs_xri_bitmap;
4218 
4219 	/* re-initialize ndlp except of ndlp linked list pointer */
4220 	memset((((char *)ndlp) + sizeof (struct list_head)), 0,
4221 		sizeof (struct lpfc_nodelist) - sizeof (struct list_head));
4222 	lpfc_initialize_node(vport, ndlp, did);
4223 
4224 	if (phba->sli_rev == LPFC_SLI_REV4)
4225 		ndlp->active_rrqs_xri_bitmap = active_rrqs_xri_bitmap;
4226 
4227 	spin_unlock_irqrestore(&phba->ndlp_lock, flags);
4228 	if (vport->phba->sli_rev == LPFC_SLI_REV4)
4229 		ndlp->nlp_rpi = lpfc_sli4_alloc_rpi(vport->phba);
4230 
4231 
4232 	if (state != NLP_STE_UNUSED_NODE)
4233 		lpfc_nlp_set_state(vport, ndlp, state);
4234 
4235 	lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE,
4236 		"node enable:       did:x%x",
4237 		ndlp->nlp_DID, 0, 0);
4238 	return ndlp;
4239 }
4240 
4241 void
4242 lpfc_drop_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
4243 {
4244 	/*
4245 	 * Use of lpfc_drop_node and UNUSED list: lpfc_drop_node should
4246 	 * be used if we wish to issue the "last" lpfc_nlp_put() to remove
4247 	 * the ndlp from the vport. The ndlp marked as UNUSED on the list
4248 	 * until ALL other outstanding threads have completed. We check
4249 	 * that the ndlp not already in the UNUSED state before we proceed.
4250 	 */
4251 	if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
4252 		return;
4253 	lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNUSED_NODE);
4254 	if (vport->phba->sli_rev == LPFC_SLI_REV4)
4255 		lpfc_cleanup_vports_rrqs(vport, ndlp);
4256 	lpfc_nlp_put(ndlp);
4257 	return;
4258 }
4259 
4260 /*
4261  * Start / ReStart rescue timer for Discovery / RSCN handling
4262  */
4263 void
4264 lpfc_set_disctmo(struct lpfc_vport *vport)
4265 {
4266 	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4267 	struct lpfc_hba  *phba = vport->phba;
4268 	uint32_t tmo;
4269 
4270 	if (vport->port_state == LPFC_LOCAL_CFG_LINK) {
4271 		/* For FAN, timeout should be greater than edtov */
4272 		tmo = (((phba->fc_edtov + 999) / 1000) + 1);
4273 	} else {
4274 		/* Normal discovery timeout should be > than ELS/CT timeout
4275 		 * FC spec states we need 3 * ratov for CT requests
4276 		 */
4277 		tmo = ((phba->fc_ratov * 3) + 3);
4278 	}
4279 
4280 
4281 	if (!timer_pending(&vport->fc_disctmo)) {
4282 		lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
4283 			"set disc timer:  tmo:x%x state:x%x flg:x%x",
4284 			tmo, vport->port_state, vport->fc_flag);
4285 	}
4286 
4287 	mod_timer(&vport->fc_disctmo, jiffies + msecs_to_jiffies(1000 * tmo));
4288 	spin_lock_irq(shost->host_lock);
4289 	vport->fc_flag |= FC_DISC_TMO;
4290 	spin_unlock_irq(shost->host_lock);
4291 
4292 	/* Start Discovery Timer state <hba_state> */
4293 	lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
4294 			 "0247 Start Discovery Timer state x%x "
4295 			 "Data: x%x x%lx x%x x%x\n",
4296 			 vport->port_state, tmo,
4297 			 (unsigned long)&vport->fc_disctmo, vport->fc_plogi_cnt,
4298 			 vport->fc_adisc_cnt);
4299 
4300 	return;
4301 }
4302 
4303 /*
4304  * Cancel rescue timer for Discovery / RSCN handling
4305  */
4306 int
4307 lpfc_can_disctmo(struct lpfc_vport *vport)
4308 {
4309 	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4310 	unsigned long iflags;
4311 
4312 	lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
4313 		"can disc timer:  state:x%x rtry:x%x flg:x%x",
4314 		vport->port_state, vport->fc_ns_retry, vport->fc_flag);
4315 
4316 	/* Turn off discovery timer if its running */
4317 	if (vport->fc_flag & FC_DISC_TMO) {
4318 		spin_lock_irqsave(shost->host_lock, iflags);
4319 		vport->fc_flag &= ~FC_DISC_TMO;
4320 		spin_unlock_irqrestore(shost->host_lock, iflags);
4321 		del_timer_sync(&vport->fc_disctmo);
4322 		spin_lock_irqsave(&vport->work_port_lock, iflags);
4323 		vport->work_port_events &= ~WORKER_DISC_TMO;
4324 		spin_unlock_irqrestore(&vport->work_port_lock, iflags);
4325 	}
4326 
4327 	/* Cancel Discovery Timer state <hba_state> */
4328 	lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
4329 			 "0248 Cancel Discovery Timer state x%x "
4330 			 "Data: x%x x%x x%x\n",
4331 			 vport->port_state, vport->fc_flag,
4332 			 vport->fc_plogi_cnt, vport->fc_adisc_cnt);
4333 	return 0;
4334 }
4335 
4336 /*
4337  * Check specified ring for outstanding IOCB on the SLI queue
4338  * Return true if iocb matches the specified nport
4339  */
4340 int
4341 lpfc_check_sli_ndlp(struct lpfc_hba *phba,
4342 		    struct lpfc_sli_ring *pring,
4343 		    struct lpfc_iocbq *iocb,
4344 		    struct lpfc_nodelist *ndlp)
4345 {
4346 	struct lpfc_sli *psli = &phba->sli;
4347 	IOCB_t *icmd = &iocb->iocb;
4348 	struct lpfc_vport    *vport = ndlp->vport;
4349 
4350 	if (iocb->vport != vport)
4351 		return 0;
4352 
4353 	if (pring->ringno == LPFC_ELS_RING) {
4354 		switch (icmd->ulpCommand) {
4355 		case CMD_GEN_REQUEST64_CR:
4356 			if (iocb->context_un.ndlp == ndlp)
4357 				return 1;
4358 		case CMD_ELS_REQUEST64_CR:
4359 			if (icmd->un.elsreq64.remoteID == ndlp->nlp_DID)
4360 				return 1;
4361 		case CMD_XMIT_ELS_RSP64_CX:
4362 			if (iocb->context1 == (uint8_t *) ndlp)
4363 				return 1;
4364 		}
4365 	} else if (pring->ringno == psli->extra_ring) {
4366 
4367 	} else if (pring->ringno == psli->fcp_ring) {
4368 		/* Skip match check if waiting to relogin to FCP target */
4369 		if ((ndlp->nlp_type & NLP_FCP_TARGET) &&
4370 		    (ndlp->nlp_flag & NLP_DELAY_TMO)) {
4371 			return 0;
4372 		}
4373 		if (icmd->ulpContext == (volatile ushort)ndlp->nlp_rpi) {
4374 			return 1;
4375 		}
4376 	} else if (pring->ringno == psli->next_ring) {
4377 
4378 	}
4379 	return 0;
4380 }
4381 
4382 /*
4383  * Free resources / clean up outstanding I/Os
4384  * associated with nlp_rpi in the LPFC_NODELIST entry.
4385  */
4386 static int
4387 lpfc_no_rpi(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
4388 {
4389 	LIST_HEAD(completions);
4390 	struct lpfc_sli *psli;
4391 	struct lpfc_sli_ring *pring;
4392 	struct lpfc_iocbq *iocb, *next_iocb;
4393 	uint32_t i;
4394 
4395 	lpfc_fabric_abort_nport(ndlp);
4396 
4397 	/*
4398 	 * Everything that matches on txcmplq will be returned
4399 	 * by firmware with a no rpi error.
4400 	 */
4401 	psli = &phba->sli;
4402 	if (ndlp->nlp_flag & NLP_RPI_REGISTERED) {
4403 		/* Now process each ring */
4404 		for (i = 0; i < psli->num_rings; i++) {
4405 			pring = &psli->ring[i];
4406 
4407 			spin_lock_irq(&phba->hbalock);
4408 			list_for_each_entry_safe(iocb, next_iocb, &pring->txq,
4409 						 list) {
4410 				/*
4411 				 * Check to see if iocb matches the nport we are
4412 				 * looking for
4413 				 */
4414 				if ((lpfc_check_sli_ndlp(phba, pring, iocb,
4415 							 ndlp))) {
4416 					/* It matches, so deque and call compl
4417 					   with an error */
4418 					list_move_tail(&iocb->list,
4419 						       &completions);
4420 				}
4421 			}
4422 			spin_unlock_irq(&phba->hbalock);
4423 		}
4424 	}
4425 
4426 	/* Cancel all the IOCBs from the completions list */
4427 	lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT,
4428 			      IOERR_SLI_ABORTED);
4429 
4430 	return 0;
4431 }
4432 
4433 /**
4434  * lpfc_nlp_logo_unreg - Unreg mailbox completion handler before LOGO
4435  * @phba: Pointer to HBA context object.
4436  * @pmb: Pointer to mailbox object.
4437  *
4438  * This function will issue an ELS LOGO command after completing
4439  * the UNREG_RPI.
4440  **/
4441 void
4442 lpfc_nlp_logo_unreg(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
4443 {
4444 	struct lpfc_vport  *vport = pmb->vport;
4445 	struct lpfc_nodelist *ndlp;
4446 
4447 	ndlp = (struct lpfc_nodelist *)(pmb->context1);
4448 	if (!ndlp)
4449 		return;
4450 	lpfc_issue_els_logo(vport, ndlp, 0);
4451 	mempool_free(pmb, phba->mbox_mem_pool);
4452 }
4453 
4454 /*
4455  * Free rpi associated with LPFC_NODELIST entry.
4456  * This routine is called from lpfc_freenode(), when we are removing
4457  * a LPFC_NODELIST entry. It is also called if the driver initiates a
4458  * LOGO that completes successfully, and we are waiting to PLOGI back
4459  * to the remote NPort. In addition, it is called after we receive
4460  * and unsolicated ELS cmd, send back a rsp, the rsp completes and
4461  * we are waiting to PLOGI back to the remote NPort.
4462  */
4463 int
4464 lpfc_unreg_rpi(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
4465 {
4466 	struct lpfc_hba *phba = vport->phba;
4467 	LPFC_MBOXQ_t    *mbox;
4468 	int rc;
4469 	uint16_t rpi;
4470 
4471 	if (ndlp->nlp_flag & NLP_RPI_REGISTERED ||
4472 	    ndlp->nlp_flag & NLP_REG_LOGIN_SEND) {
4473 		if (ndlp->nlp_flag & NLP_REG_LOGIN_SEND)
4474 			lpfc_printf_vlog(vport, KERN_INFO, LOG_SLI,
4475 					 "3366 RPI x%x needs to be "
4476 					 "unregistered nlp_flag x%x "
4477 					 "did x%x\n",
4478 					 ndlp->nlp_rpi, ndlp->nlp_flag,
4479 					 ndlp->nlp_DID);
4480 		mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
4481 		if (mbox) {
4482 			/* SLI4 ports require the physical rpi value. */
4483 			rpi = ndlp->nlp_rpi;
4484 			if (phba->sli_rev == LPFC_SLI_REV4)
4485 				rpi = phba->sli4_hba.rpi_ids[ndlp->nlp_rpi];
4486 
4487 			lpfc_unreg_login(phba, vport->vpi, rpi, mbox);
4488 			mbox->vport = vport;
4489 			if (ndlp->nlp_flag & NLP_ISSUE_LOGO) {
4490 				mbox->context1 = ndlp;
4491 				mbox->mbox_cmpl = lpfc_nlp_logo_unreg;
4492 			} else {
4493 				mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
4494 			}
4495 
4496 			rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
4497 			if (rc == MBX_NOT_FINISHED)
4498 				mempool_free(mbox, phba->mbox_mem_pool);
4499 		}
4500 		lpfc_no_rpi(phba, ndlp);
4501 
4502 		if (phba->sli_rev != LPFC_SLI_REV4)
4503 			ndlp->nlp_rpi = 0;
4504 		ndlp->nlp_flag &= ~NLP_RPI_REGISTERED;
4505 		ndlp->nlp_flag &= ~NLP_NPR_ADISC;
4506 		return 1;
4507 	}
4508 	return 0;
4509 }
4510 
4511 /**
4512  * lpfc_unreg_hba_rpis - Unregister rpis registered to the hba.
4513  * @phba: pointer to lpfc hba data structure.
4514  *
4515  * This routine is invoked to unregister all the currently registered RPIs
4516  * to the HBA.
4517  **/
4518 void
4519 lpfc_unreg_hba_rpis(struct lpfc_hba *phba)
4520 {
4521 	struct lpfc_vport **vports;
4522 	struct lpfc_nodelist *ndlp;
4523 	struct Scsi_Host *shost;
4524 	int i;
4525 
4526 	vports = lpfc_create_vport_work_array(phba);
4527 	if (!vports) {
4528 		lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY,
4529 			"2884 Vport array allocation failed \n");
4530 		return;
4531 	}
4532 	for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
4533 		shost = lpfc_shost_from_vport(vports[i]);
4534 		spin_lock_irq(shost->host_lock);
4535 		list_for_each_entry(ndlp, &vports[i]->fc_nodes, nlp_listp) {
4536 			if (ndlp->nlp_flag & NLP_RPI_REGISTERED) {
4537 				/* The mempool_alloc might sleep */
4538 				spin_unlock_irq(shost->host_lock);
4539 				lpfc_unreg_rpi(vports[i], ndlp);
4540 				spin_lock_irq(shost->host_lock);
4541 			}
4542 		}
4543 		spin_unlock_irq(shost->host_lock);
4544 	}
4545 	lpfc_destroy_vport_work_array(phba, vports);
4546 }
4547 
4548 void
4549 lpfc_unreg_all_rpis(struct lpfc_vport *vport)
4550 {
4551 	struct lpfc_hba  *phba  = vport->phba;
4552 	LPFC_MBOXQ_t     *mbox;
4553 	int rc;
4554 
4555 	if (phba->sli_rev == LPFC_SLI_REV4) {
4556 		lpfc_sli4_unreg_all_rpis(vport);
4557 		return;
4558 	}
4559 
4560 	mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
4561 	if (mbox) {
4562 		lpfc_unreg_login(phba, vport->vpi, LPFC_UNREG_ALL_RPIS_VPORT,
4563 				 mbox);
4564 		mbox->vport = vport;
4565 		mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
4566 		mbox->context1 = NULL;
4567 		rc = lpfc_sli_issue_mbox_wait(phba, mbox, LPFC_MBOX_TMO);
4568 		if (rc != MBX_TIMEOUT)
4569 			mempool_free(mbox, phba->mbox_mem_pool);
4570 
4571 		if ((rc == MBX_TIMEOUT) || (rc == MBX_NOT_FINISHED))
4572 			lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX | LOG_VPORT,
4573 				"1836 Could not issue "
4574 				"unreg_login(all_rpis) status %d\n", rc);
4575 	}
4576 }
4577 
4578 void
4579 lpfc_unreg_default_rpis(struct lpfc_vport *vport)
4580 {
4581 	struct lpfc_hba  *phba  = vport->phba;
4582 	LPFC_MBOXQ_t     *mbox;
4583 	int rc;
4584 
4585 	mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
4586 	if (mbox) {
4587 		lpfc_unreg_did(phba, vport->vpi, LPFC_UNREG_ALL_DFLT_RPIS,
4588 			       mbox);
4589 		mbox->vport = vport;
4590 		mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
4591 		mbox->context1 = NULL;
4592 		rc = lpfc_sli_issue_mbox_wait(phba, mbox, LPFC_MBOX_TMO);
4593 		if (rc != MBX_TIMEOUT)
4594 			mempool_free(mbox, phba->mbox_mem_pool);
4595 
4596 		if ((rc == MBX_TIMEOUT) || (rc == MBX_NOT_FINISHED))
4597 			lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX | LOG_VPORT,
4598 					 "1815 Could not issue "
4599 					 "unreg_did (default rpis) status %d\n",
4600 					 rc);
4601 	}
4602 }
4603 
4604 /*
4605  * Free resources associated with LPFC_NODELIST entry
4606  * so it can be freed.
4607  */
4608 static int
4609 lpfc_cleanup_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
4610 {
4611 	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4612 	struct lpfc_hba  *phba = vport->phba;
4613 	LPFC_MBOXQ_t *mb, *nextmb;
4614 	struct lpfc_dmabuf *mp;
4615 
4616 	/* Cleanup node for NPort <nlp_DID> */
4617 	lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
4618 			 "0900 Cleanup node for NPort x%x "
4619 			 "Data: x%x x%x x%x\n",
4620 			 ndlp->nlp_DID, ndlp->nlp_flag,
4621 			 ndlp->nlp_state, ndlp->nlp_rpi);
4622 	if (NLP_CHK_FREE_REQ(ndlp)) {
4623 		lpfc_printf_vlog(vport, KERN_WARNING, LOG_NODE,
4624 				"0280 lpfc_cleanup_node: ndlp:x%p "
4625 				"usgmap:x%x refcnt:%d\n",
4626 				(void *)ndlp, ndlp->nlp_usg_map,
4627 				atomic_read(&ndlp->kref.refcount));
4628 		lpfc_dequeue_node(vport, ndlp);
4629 	} else {
4630 		lpfc_printf_vlog(vport, KERN_WARNING, LOG_NODE,
4631 				"0281 lpfc_cleanup_node: ndlp:x%p "
4632 				"usgmap:x%x refcnt:%d\n",
4633 				(void *)ndlp, ndlp->nlp_usg_map,
4634 				atomic_read(&ndlp->kref.refcount));
4635 		lpfc_disable_node(vport, ndlp);
4636 	}
4637 
4638 
4639 	/* Don't need to clean up REG_LOGIN64 cmds for Default RPI cleanup */
4640 
4641 	/* cleanup any ndlp on mbox q waiting for reglogin cmpl */
4642 	if ((mb = phba->sli.mbox_active)) {
4643 		if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) &&
4644 		   !(mb->mbox_flag & LPFC_MBX_IMED_UNREG) &&
4645 		   (ndlp == (struct lpfc_nodelist *) mb->context2)) {
4646 			mb->context2 = NULL;
4647 			mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
4648 		}
4649 	}
4650 
4651 	spin_lock_irq(&phba->hbalock);
4652 	/* Cleanup REG_LOGIN completions which are not yet processed */
4653 	list_for_each_entry(mb, &phba->sli.mboxq_cmpl, list) {
4654 		if ((mb->u.mb.mbxCommand != MBX_REG_LOGIN64) ||
4655 			(mb->mbox_flag & LPFC_MBX_IMED_UNREG) ||
4656 			(ndlp != (struct lpfc_nodelist *) mb->context2))
4657 			continue;
4658 
4659 		mb->context2 = NULL;
4660 		mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
4661 	}
4662 
4663 	list_for_each_entry_safe(mb, nextmb, &phba->sli.mboxq, list) {
4664 		if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) &&
4665 		   !(mb->mbox_flag & LPFC_MBX_IMED_UNREG) &&
4666 		    (ndlp == (struct lpfc_nodelist *) mb->context2)) {
4667 			mp = (struct lpfc_dmabuf *) (mb->context1);
4668 			if (mp) {
4669 				__lpfc_mbuf_free(phba, mp->virt, mp->phys);
4670 				kfree(mp);
4671 			}
4672 			list_del(&mb->list);
4673 			mempool_free(mb, phba->mbox_mem_pool);
4674 			/* We shall not invoke the lpfc_nlp_put to decrement
4675 			 * the ndlp reference count as we are in the process
4676 			 * of lpfc_nlp_release.
4677 			 */
4678 		}
4679 	}
4680 	spin_unlock_irq(&phba->hbalock);
4681 
4682 	lpfc_els_abort(phba, ndlp);
4683 
4684 	spin_lock_irq(shost->host_lock);
4685 	ndlp->nlp_flag &= ~NLP_DELAY_TMO;
4686 	spin_unlock_irq(shost->host_lock);
4687 
4688 	ndlp->nlp_last_elscmd = 0;
4689 	del_timer_sync(&ndlp->nlp_delayfunc);
4690 
4691 	list_del_init(&ndlp->els_retry_evt.evt_listp);
4692 	list_del_init(&ndlp->dev_loss_evt.evt_listp);
4693 	lpfc_cleanup_vports_rrqs(vport, ndlp);
4694 	lpfc_unreg_rpi(vport, ndlp);
4695 
4696 	return 0;
4697 }
4698 
4699 /*
4700  * Check to see if we can free the nlp back to the freelist.
4701  * If we are in the middle of using the nlp in the discovery state
4702  * machine, defer the free till we reach the end of the state machine.
4703  */
4704 static void
4705 lpfc_nlp_remove(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
4706 {
4707 	struct lpfc_hba  *phba = vport->phba;
4708 	struct lpfc_rport_data *rdata;
4709 	LPFC_MBOXQ_t *mbox;
4710 	int rc;
4711 
4712 	lpfc_cancel_retry_delay_tmo(vport, ndlp);
4713 	if ((ndlp->nlp_flag & NLP_DEFER_RM) &&
4714 	    !(ndlp->nlp_flag & NLP_REG_LOGIN_SEND) &&
4715 	    !(ndlp->nlp_flag & NLP_RPI_REGISTERED)) {
4716 		/* For this case we need to cleanup the default rpi
4717 		 * allocated by the firmware.
4718 		 */
4719 		if ((mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL))
4720 			!= NULL) {
4721 			rc = lpfc_reg_rpi(phba, vport->vpi, ndlp->nlp_DID,
4722 			    (uint8_t *) &vport->fc_sparam, mbox, ndlp->nlp_rpi);
4723 			if (rc) {
4724 				mempool_free(mbox, phba->mbox_mem_pool);
4725 			}
4726 			else {
4727 				mbox->mbox_flag |= LPFC_MBX_IMED_UNREG;
4728 				mbox->mbox_cmpl = lpfc_mbx_cmpl_dflt_rpi;
4729 				mbox->vport = vport;
4730 				mbox->context2 = ndlp;
4731 				rc =lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
4732 				if (rc == MBX_NOT_FINISHED) {
4733 					mempool_free(mbox, phba->mbox_mem_pool);
4734 				}
4735 			}
4736 		}
4737 	}
4738 	lpfc_cleanup_node(vport, ndlp);
4739 
4740 	/*
4741 	 * We can get here with a non-NULL ndlp->rport because when we
4742 	 * unregister a rport we don't break the rport/node linkage.  So if we
4743 	 * do, make sure we don't leaving any dangling pointers behind.
4744 	 */
4745 	if (ndlp->rport) {
4746 		rdata = ndlp->rport->dd_data;
4747 		rdata->pnode = NULL;
4748 		ndlp->rport = NULL;
4749 	}
4750 }
4751 
4752 static int
4753 lpfc_matchdid(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
4754 	      uint32_t did)
4755 {
4756 	D_ID mydid, ndlpdid, matchdid;
4757 
4758 	if (did == Bcast_DID)
4759 		return 0;
4760 
4761 	/* First check for Direct match */
4762 	if (ndlp->nlp_DID == did)
4763 		return 1;
4764 
4765 	/* Next check for area/domain identically equals 0 match */
4766 	mydid.un.word = vport->fc_myDID;
4767 	if ((mydid.un.b.domain == 0) && (mydid.un.b.area == 0)) {
4768 		return 0;
4769 	}
4770 
4771 	matchdid.un.word = did;
4772 	ndlpdid.un.word = ndlp->nlp_DID;
4773 	if (matchdid.un.b.id == ndlpdid.un.b.id) {
4774 		if ((mydid.un.b.domain == matchdid.un.b.domain) &&
4775 		    (mydid.un.b.area == matchdid.un.b.area)) {
4776 			if ((ndlpdid.un.b.domain == 0) &&
4777 			    (ndlpdid.un.b.area == 0)) {
4778 				if (ndlpdid.un.b.id)
4779 					return 1;
4780 			}
4781 			return 0;
4782 		}
4783 
4784 		matchdid.un.word = ndlp->nlp_DID;
4785 		if ((mydid.un.b.domain == ndlpdid.un.b.domain) &&
4786 		    (mydid.un.b.area == ndlpdid.un.b.area)) {
4787 			if ((matchdid.un.b.domain == 0) &&
4788 			    (matchdid.un.b.area == 0)) {
4789 				if (matchdid.un.b.id)
4790 					return 1;
4791 			}
4792 		}
4793 	}
4794 	return 0;
4795 }
4796 
4797 /* Search for a nodelist entry */
4798 static struct lpfc_nodelist *
4799 __lpfc_findnode_did(struct lpfc_vport *vport, uint32_t did)
4800 {
4801 	struct lpfc_nodelist *ndlp;
4802 	uint32_t data1;
4803 
4804 	list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
4805 		if (lpfc_matchdid(vport, ndlp, did)) {
4806 			data1 = (((uint32_t) ndlp->nlp_state << 24) |
4807 				 ((uint32_t) ndlp->nlp_xri << 16) |
4808 				 ((uint32_t) ndlp->nlp_type << 8) |
4809 				 ((uint32_t) ndlp->nlp_rpi & 0xff));
4810 			lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
4811 					 "0929 FIND node DID "
4812 					 "Data: x%p x%x x%x x%x %p\n",
4813 					 ndlp, ndlp->nlp_DID,
4814 					 ndlp->nlp_flag, data1,
4815 					 ndlp->active_rrqs_xri_bitmap);
4816 			return ndlp;
4817 		}
4818 	}
4819 
4820 	/* FIND node did <did> NOT FOUND */
4821 	lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
4822 			 "0932 FIND node did x%x NOT FOUND.\n", did);
4823 	return NULL;
4824 }
4825 
4826 struct lpfc_nodelist *
4827 lpfc_findnode_did(struct lpfc_vport *vport, uint32_t did)
4828 {
4829 	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4830 	struct lpfc_nodelist *ndlp;
4831 	unsigned long iflags;
4832 
4833 	spin_lock_irqsave(shost->host_lock, iflags);
4834 	ndlp = __lpfc_findnode_did(vport, did);
4835 	spin_unlock_irqrestore(shost->host_lock, iflags);
4836 	return ndlp;
4837 }
4838 
4839 struct lpfc_nodelist *
4840 lpfc_setup_disc_node(struct lpfc_vport *vport, uint32_t did)
4841 {
4842 	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4843 	struct lpfc_nodelist *ndlp;
4844 
4845 	ndlp = lpfc_findnode_did(vport, did);
4846 	if (!ndlp) {
4847 		if ((vport->fc_flag & FC_RSCN_MODE) != 0 &&
4848 		    lpfc_rscn_payload_check(vport, did) == 0)
4849 			return NULL;
4850 		ndlp = (struct lpfc_nodelist *)
4851 		     mempool_alloc(vport->phba->nlp_mem_pool, GFP_KERNEL);
4852 		if (!ndlp)
4853 			return NULL;
4854 		lpfc_nlp_init(vport, ndlp, did);
4855 		lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
4856 		spin_lock_irq(shost->host_lock);
4857 		ndlp->nlp_flag |= NLP_NPR_2B_DISC;
4858 		spin_unlock_irq(shost->host_lock);
4859 		return ndlp;
4860 	} else if (!NLP_CHK_NODE_ACT(ndlp)) {
4861 		ndlp = lpfc_enable_node(vport, ndlp, NLP_STE_NPR_NODE);
4862 		if (!ndlp)
4863 			return NULL;
4864 		spin_lock_irq(shost->host_lock);
4865 		ndlp->nlp_flag |= NLP_NPR_2B_DISC;
4866 		spin_unlock_irq(shost->host_lock);
4867 		return ndlp;
4868 	}
4869 
4870 	if ((vport->fc_flag & FC_RSCN_MODE) &&
4871 	    !(vport->fc_flag & FC_NDISC_ACTIVE)) {
4872 		if (lpfc_rscn_payload_check(vport, did)) {
4873 			/* If we've already received a PLOGI from this NPort
4874 			 * we don't need to try to discover it again.
4875 			 */
4876 			if (ndlp->nlp_flag & NLP_RCV_PLOGI)
4877 				return NULL;
4878 
4879 			/* Since this node is marked for discovery,
4880 			 * delay timeout is not needed.
4881 			 */
4882 			lpfc_cancel_retry_delay_tmo(vport, ndlp);
4883 			spin_lock_irq(shost->host_lock);
4884 			ndlp->nlp_flag |= NLP_NPR_2B_DISC;
4885 			spin_unlock_irq(shost->host_lock);
4886 		} else
4887 			ndlp = NULL;
4888 	} else {
4889 		/* If we've already received a PLOGI from this NPort,
4890 		 * or we are already in the process of discovery on it,
4891 		 * we don't need to try to discover it again.
4892 		 */
4893 		if (ndlp->nlp_state == NLP_STE_ADISC_ISSUE ||
4894 		    ndlp->nlp_state == NLP_STE_PLOGI_ISSUE ||
4895 		    ndlp->nlp_flag & NLP_RCV_PLOGI)
4896 			return NULL;
4897 		lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
4898 		spin_lock_irq(shost->host_lock);
4899 		ndlp->nlp_flag |= NLP_NPR_2B_DISC;
4900 		spin_unlock_irq(shost->host_lock);
4901 	}
4902 	return ndlp;
4903 }
4904 
4905 /* Build a list of nodes to discover based on the loopmap */
4906 void
4907 lpfc_disc_list_loopmap(struct lpfc_vport *vport)
4908 {
4909 	struct lpfc_hba  *phba = vport->phba;
4910 	int j;
4911 	uint32_t alpa, index;
4912 
4913 	if (!lpfc_is_link_up(phba))
4914 		return;
4915 
4916 	if (phba->fc_topology != LPFC_TOPOLOGY_LOOP)
4917 		return;
4918 
4919 	/* Check for loop map present or not */
4920 	if (phba->alpa_map[0]) {
4921 		for (j = 1; j <= phba->alpa_map[0]; j++) {
4922 			alpa = phba->alpa_map[j];
4923 			if (((vport->fc_myDID & 0xff) == alpa) || (alpa == 0))
4924 				continue;
4925 			lpfc_setup_disc_node(vport, alpa);
4926 		}
4927 	} else {
4928 		/* No alpamap, so try all alpa's */
4929 		for (j = 0; j < FC_MAXLOOP; j++) {
4930 			/* If cfg_scan_down is set, start from highest
4931 			 * ALPA (0xef) to lowest (0x1).
4932 			 */
4933 			if (vport->cfg_scan_down)
4934 				index = j;
4935 			else
4936 				index = FC_MAXLOOP - j - 1;
4937 			alpa = lpfcAlpaArray[index];
4938 			if ((vport->fc_myDID & 0xff) == alpa)
4939 				continue;
4940 			lpfc_setup_disc_node(vport, alpa);
4941 		}
4942 	}
4943 	return;
4944 }
4945 
4946 void
4947 lpfc_issue_clear_la(struct lpfc_hba *phba, struct lpfc_vport *vport)
4948 {
4949 	LPFC_MBOXQ_t *mbox;
4950 	struct lpfc_sli *psli = &phba->sli;
4951 	struct lpfc_sli_ring *extra_ring = &psli->ring[psli->extra_ring];
4952 	struct lpfc_sli_ring *fcp_ring   = &psli->ring[psli->fcp_ring];
4953 	struct lpfc_sli_ring *next_ring  = &psli->ring[psli->next_ring];
4954 	int  rc;
4955 
4956 	/*
4957 	 * if it's not a physical port or if we already send
4958 	 * clear_la then don't send it.
4959 	 */
4960 	if ((phba->link_state >= LPFC_CLEAR_LA) ||
4961 	    (vport->port_type != LPFC_PHYSICAL_PORT) ||
4962 		(phba->sli_rev == LPFC_SLI_REV4))
4963 		return;
4964 
4965 			/* Link up discovery */
4966 	if ((mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL)) != NULL) {
4967 		phba->link_state = LPFC_CLEAR_LA;
4968 		lpfc_clear_la(phba, mbox);
4969 		mbox->mbox_cmpl = lpfc_mbx_cmpl_clear_la;
4970 		mbox->vport = vport;
4971 		rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
4972 		if (rc == MBX_NOT_FINISHED) {
4973 			mempool_free(mbox, phba->mbox_mem_pool);
4974 			lpfc_disc_flush_list(vport);
4975 			extra_ring->flag &= ~LPFC_STOP_IOCB_EVENT;
4976 			fcp_ring->flag &= ~LPFC_STOP_IOCB_EVENT;
4977 			next_ring->flag &= ~LPFC_STOP_IOCB_EVENT;
4978 			phba->link_state = LPFC_HBA_ERROR;
4979 		}
4980 	}
4981 }
4982 
4983 /* Reg_vpi to tell firmware to resume normal operations */
4984 void
4985 lpfc_issue_reg_vpi(struct lpfc_hba *phba, struct lpfc_vport *vport)
4986 {
4987 	LPFC_MBOXQ_t *regvpimbox;
4988 
4989 	regvpimbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
4990 	if (regvpimbox) {
4991 		lpfc_reg_vpi(vport, regvpimbox);
4992 		regvpimbox->mbox_cmpl = lpfc_mbx_cmpl_reg_vpi;
4993 		regvpimbox->vport = vport;
4994 		if (lpfc_sli_issue_mbox(phba, regvpimbox, MBX_NOWAIT)
4995 					== MBX_NOT_FINISHED) {
4996 			mempool_free(regvpimbox, phba->mbox_mem_pool);
4997 		}
4998 	}
4999 }
5000 
5001 /* Start Link up / RSCN discovery on NPR nodes */
5002 void
5003 lpfc_disc_start(struct lpfc_vport *vport)
5004 {
5005 	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
5006 	struct lpfc_hba  *phba = vport->phba;
5007 	uint32_t num_sent;
5008 	uint32_t clear_la_pending;
5009 	int did_changed;
5010 
5011 	if (!lpfc_is_link_up(phba)) {
5012 		lpfc_printf_vlog(vport, KERN_INFO, LOG_SLI,
5013 				 "3315 Link is not up %x\n",
5014 				 phba->link_state);
5015 		return;
5016 	}
5017 
5018 	if (phba->link_state == LPFC_CLEAR_LA)
5019 		clear_la_pending = 1;
5020 	else
5021 		clear_la_pending = 0;
5022 
5023 	if (vport->port_state < LPFC_VPORT_READY)
5024 		vport->port_state = LPFC_DISC_AUTH;
5025 
5026 	lpfc_set_disctmo(vport);
5027 
5028 	if (vport->fc_prevDID == vport->fc_myDID)
5029 		did_changed = 0;
5030 	else
5031 		did_changed = 1;
5032 
5033 	vport->fc_prevDID = vport->fc_myDID;
5034 	vport->num_disc_nodes = 0;
5035 
5036 	/* Start Discovery state <hba_state> */
5037 	lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
5038 			 "0202 Start Discovery hba state x%x "
5039 			 "Data: x%x x%x x%x\n",
5040 			 vport->port_state, vport->fc_flag, vport->fc_plogi_cnt,
5041 			 vport->fc_adisc_cnt);
5042 
5043 	/* First do ADISCs - if any */
5044 	num_sent = lpfc_els_disc_adisc(vport);
5045 
5046 	if (num_sent)
5047 		return;
5048 
5049 	/* Register the VPI for SLI3, NPIV only. */
5050 	if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
5051 	    !(vport->fc_flag & FC_PT2PT) &&
5052 	    !(vport->fc_flag & FC_RSCN_MODE) &&
5053 	    (phba->sli_rev < LPFC_SLI_REV4)) {
5054 		if (vport->port_type == LPFC_PHYSICAL_PORT)
5055 			lpfc_issue_clear_la(phba, vport);
5056 		lpfc_issue_reg_vpi(phba, vport);
5057 		return;
5058 	}
5059 
5060 	/*
5061 	 * For SLI2, we need to set port_state to READY and continue
5062 	 * discovery.
5063 	 */
5064 	if (vport->port_state < LPFC_VPORT_READY && !clear_la_pending) {
5065 		/* If we get here, there is nothing to ADISC */
5066 		if (vport->port_type == LPFC_PHYSICAL_PORT)
5067 			lpfc_issue_clear_la(phba, vport);
5068 
5069 		if (!(vport->fc_flag & FC_ABORT_DISCOVERY)) {
5070 			vport->num_disc_nodes = 0;
5071 			/* go thru NPR nodes and issue ELS PLOGIs */
5072 			if (vport->fc_npr_cnt)
5073 				lpfc_els_disc_plogi(vport);
5074 
5075 			if (!vport->num_disc_nodes) {
5076 				spin_lock_irq(shost->host_lock);
5077 				vport->fc_flag &= ~FC_NDISC_ACTIVE;
5078 				spin_unlock_irq(shost->host_lock);
5079 				lpfc_can_disctmo(vport);
5080 			}
5081 		}
5082 		vport->port_state = LPFC_VPORT_READY;
5083 	} else {
5084 		/* Next do PLOGIs - if any */
5085 		num_sent = lpfc_els_disc_plogi(vport);
5086 
5087 		if (num_sent)
5088 			return;
5089 
5090 		if (vport->fc_flag & FC_RSCN_MODE) {
5091 			/* Check to see if more RSCNs came in while we
5092 			 * were processing this one.
5093 			 */
5094 			if ((vport->fc_rscn_id_cnt == 0) &&
5095 			    (!(vport->fc_flag & FC_RSCN_DISCOVERY))) {
5096 				spin_lock_irq(shost->host_lock);
5097 				vport->fc_flag &= ~FC_RSCN_MODE;
5098 				spin_unlock_irq(shost->host_lock);
5099 				lpfc_can_disctmo(vport);
5100 			} else
5101 				lpfc_els_handle_rscn(vport);
5102 		}
5103 	}
5104 	return;
5105 }
5106 
5107 /*
5108  *  Ignore completion for all IOCBs on tx and txcmpl queue for ELS
5109  *  ring the match the sppecified nodelist.
5110  */
5111 static void
5112 lpfc_free_tx(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
5113 {
5114 	LIST_HEAD(completions);
5115 	struct lpfc_sli *psli;
5116 	IOCB_t     *icmd;
5117 	struct lpfc_iocbq    *iocb, *next_iocb;
5118 	struct lpfc_sli_ring *pring;
5119 
5120 	psli = &phba->sli;
5121 	pring = &psli->ring[LPFC_ELS_RING];
5122 
5123 	/* Error matching iocb on txq or txcmplq
5124 	 * First check the txq.
5125 	 */
5126 	spin_lock_irq(&phba->hbalock);
5127 	list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) {
5128 		if (iocb->context1 != ndlp) {
5129 			continue;
5130 		}
5131 		icmd = &iocb->iocb;
5132 		if ((icmd->ulpCommand == CMD_ELS_REQUEST64_CR) ||
5133 		    (icmd->ulpCommand == CMD_XMIT_ELS_RSP64_CX)) {
5134 
5135 			list_move_tail(&iocb->list, &completions);
5136 		}
5137 	}
5138 
5139 	/* Next check the txcmplq */
5140 	list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq, list) {
5141 		if (iocb->context1 != ndlp) {
5142 			continue;
5143 		}
5144 		icmd = &iocb->iocb;
5145 		if (icmd->ulpCommand == CMD_ELS_REQUEST64_CR ||
5146 		    icmd->ulpCommand == CMD_XMIT_ELS_RSP64_CX) {
5147 			lpfc_sli_issue_abort_iotag(phba, pring, iocb);
5148 		}
5149 	}
5150 	spin_unlock_irq(&phba->hbalock);
5151 
5152 	/* Cancel all the IOCBs from the completions list */
5153 	lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT,
5154 			      IOERR_SLI_ABORTED);
5155 }
5156 
5157 static void
5158 lpfc_disc_flush_list(struct lpfc_vport *vport)
5159 {
5160 	struct lpfc_nodelist *ndlp, *next_ndlp;
5161 	struct lpfc_hba *phba = vport->phba;
5162 
5163 	if (vport->fc_plogi_cnt || vport->fc_adisc_cnt) {
5164 		list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes,
5165 					 nlp_listp) {
5166 			if (!NLP_CHK_NODE_ACT(ndlp))
5167 				continue;
5168 			if (ndlp->nlp_state == NLP_STE_PLOGI_ISSUE ||
5169 			    ndlp->nlp_state == NLP_STE_ADISC_ISSUE) {
5170 				lpfc_free_tx(phba, ndlp);
5171 			}
5172 		}
5173 	}
5174 }
5175 
5176 void
5177 lpfc_cleanup_discovery_resources(struct lpfc_vport *vport)
5178 {
5179 	lpfc_els_flush_rscn(vport);
5180 	lpfc_els_flush_cmd(vport);
5181 	lpfc_disc_flush_list(vport);
5182 }
5183 
5184 /*****************************************************************************/
5185 /*
5186  * NAME:     lpfc_disc_timeout
5187  *
5188  * FUNCTION: Fibre Channel driver discovery timeout routine.
5189  *
5190  * EXECUTION ENVIRONMENT: interrupt only
5191  *
5192  * CALLED FROM:
5193  *      Timer function
5194  *
5195  * RETURNS:
5196  *      none
5197  */
5198 /*****************************************************************************/
5199 void
5200 lpfc_disc_timeout(unsigned long ptr)
5201 {
5202 	struct lpfc_vport *vport = (struct lpfc_vport *) ptr;
5203 	struct lpfc_hba   *phba = vport->phba;
5204 	uint32_t tmo_posted;
5205 	unsigned long flags = 0;
5206 
5207 	if (unlikely(!phba))
5208 		return;
5209 
5210 	spin_lock_irqsave(&vport->work_port_lock, flags);
5211 	tmo_posted = vport->work_port_events & WORKER_DISC_TMO;
5212 	if (!tmo_posted)
5213 		vport->work_port_events |= WORKER_DISC_TMO;
5214 	spin_unlock_irqrestore(&vport->work_port_lock, flags);
5215 
5216 	if (!tmo_posted)
5217 		lpfc_worker_wake_up(phba);
5218 	return;
5219 }
5220 
5221 static void
5222 lpfc_disc_timeout_handler(struct lpfc_vport *vport)
5223 {
5224 	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
5225 	struct lpfc_hba  *phba = vport->phba;
5226 	struct lpfc_sli  *psli = &phba->sli;
5227 	struct lpfc_nodelist *ndlp, *next_ndlp;
5228 	LPFC_MBOXQ_t *initlinkmbox;
5229 	int rc, clrlaerr = 0;
5230 
5231 	if (!(vport->fc_flag & FC_DISC_TMO))
5232 		return;
5233 
5234 	spin_lock_irq(shost->host_lock);
5235 	vport->fc_flag &= ~FC_DISC_TMO;
5236 	spin_unlock_irq(shost->host_lock);
5237 
5238 	lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
5239 		"disc timeout:    state:x%x rtry:x%x flg:x%x",
5240 		vport->port_state, vport->fc_ns_retry, vport->fc_flag);
5241 
5242 	switch (vport->port_state) {
5243 
5244 	case LPFC_LOCAL_CFG_LINK:
5245 	/* port_state is identically  LPFC_LOCAL_CFG_LINK while waiting for
5246 	 * FAN
5247 	 */
5248 				/* FAN timeout */
5249 		lpfc_printf_vlog(vport, KERN_WARNING, LOG_DISCOVERY,
5250 				 "0221 FAN timeout\n");
5251 		/* Start discovery by sending FLOGI, clean up old rpis */
5252 		list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes,
5253 					 nlp_listp) {
5254 			if (!NLP_CHK_NODE_ACT(ndlp))
5255 				continue;
5256 			if (ndlp->nlp_state != NLP_STE_NPR_NODE)
5257 				continue;
5258 			if (ndlp->nlp_type & NLP_FABRIC) {
5259 				/* Clean up the ndlp on Fabric connections */
5260 				lpfc_drop_node(vport, ndlp);
5261 
5262 			} else if (!(ndlp->nlp_flag & NLP_NPR_ADISC)) {
5263 				/* Fail outstanding IO now since device
5264 				 * is marked for PLOGI.
5265 				 */
5266 				lpfc_unreg_rpi(vport, ndlp);
5267 			}
5268 		}
5269 		if (vport->port_state != LPFC_FLOGI) {
5270 			if (phba->sli_rev <= LPFC_SLI_REV3)
5271 				lpfc_initial_flogi(vport);
5272 			else
5273 				lpfc_issue_init_vfi(vport);
5274 			return;
5275 		}
5276 		break;
5277 
5278 	case LPFC_FDISC:
5279 	case LPFC_FLOGI:
5280 	/* port_state is identically LPFC_FLOGI while waiting for FLOGI cmpl */
5281 		/* Initial FLOGI timeout */
5282 		lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
5283 				 "0222 Initial %s timeout\n",
5284 				 vport->vpi ? "FDISC" : "FLOGI");
5285 
5286 		/* Assume no Fabric and go on with discovery.
5287 		 * Check for outstanding ELS FLOGI to abort.
5288 		 */
5289 
5290 		/* FLOGI failed, so just use loop map to make discovery list */
5291 		lpfc_disc_list_loopmap(vport);
5292 
5293 		/* Start discovery */
5294 		lpfc_disc_start(vport);
5295 		break;
5296 
5297 	case LPFC_FABRIC_CFG_LINK:
5298 	/* hba_state is identically LPFC_FABRIC_CFG_LINK while waiting for
5299 	   NameServer login */
5300 		lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
5301 				 "0223 Timeout while waiting for "
5302 				 "NameServer login\n");
5303 		/* Next look for NameServer ndlp */
5304 		ndlp = lpfc_findnode_did(vport, NameServer_DID);
5305 		if (ndlp && NLP_CHK_NODE_ACT(ndlp))
5306 			lpfc_els_abort(phba, ndlp);
5307 
5308 		/* ReStart discovery */
5309 		goto restart_disc;
5310 
5311 	case LPFC_NS_QRY:
5312 	/* Check for wait for NameServer Rsp timeout */
5313 		lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
5314 				 "0224 NameServer Query timeout "
5315 				 "Data: x%x x%x\n",
5316 				 vport->fc_ns_retry, LPFC_MAX_NS_RETRY);
5317 
5318 		if (vport->fc_ns_retry < LPFC_MAX_NS_RETRY) {
5319 			/* Try it one more time */
5320 			vport->fc_ns_retry++;
5321 			rc = lpfc_ns_cmd(vport, SLI_CTNS_GID_FT,
5322 					 vport->fc_ns_retry, 0);
5323 			if (rc == 0)
5324 				break;
5325 		}
5326 		vport->fc_ns_retry = 0;
5327 
5328 restart_disc:
5329 		/*
5330 		 * Discovery is over.
5331 		 * set port_state to PORT_READY if SLI2.
5332 		 * cmpl_reg_vpi will set port_state to READY for SLI3.
5333 		 */
5334 		if (phba->sli_rev < LPFC_SLI_REV4) {
5335 			if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)
5336 				lpfc_issue_reg_vpi(phba, vport);
5337 			else  {
5338 				lpfc_issue_clear_la(phba, vport);
5339 				vport->port_state = LPFC_VPORT_READY;
5340 			}
5341 		}
5342 
5343 		/* Setup and issue mailbox INITIALIZE LINK command */
5344 		initlinkmbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
5345 		if (!initlinkmbox) {
5346 			lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
5347 					 "0206 Device Discovery "
5348 					 "completion error\n");
5349 			phba->link_state = LPFC_HBA_ERROR;
5350 			break;
5351 		}
5352 
5353 		lpfc_linkdown(phba);
5354 		lpfc_init_link(phba, initlinkmbox, phba->cfg_topology,
5355 			       phba->cfg_link_speed);
5356 		initlinkmbox->u.mb.un.varInitLnk.lipsr_AL_PA = 0;
5357 		initlinkmbox->vport = vport;
5358 		initlinkmbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
5359 		rc = lpfc_sli_issue_mbox(phba, initlinkmbox, MBX_NOWAIT);
5360 		lpfc_set_loopback_flag(phba);
5361 		if (rc == MBX_NOT_FINISHED)
5362 			mempool_free(initlinkmbox, phba->mbox_mem_pool);
5363 
5364 		break;
5365 
5366 	case LPFC_DISC_AUTH:
5367 	/* Node Authentication timeout */
5368 		lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
5369 				 "0227 Node Authentication timeout\n");
5370 		lpfc_disc_flush_list(vport);
5371 
5372 		/*
5373 		 * set port_state to PORT_READY if SLI2.
5374 		 * cmpl_reg_vpi will set port_state to READY for SLI3.
5375 		 */
5376 		if (phba->sli_rev < LPFC_SLI_REV4) {
5377 			if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)
5378 				lpfc_issue_reg_vpi(phba, vport);
5379 			else  {	/* NPIV Not enabled */
5380 				lpfc_issue_clear_la(phba, vport);
5381 				vport->port_state = LPFC_VPORT_READY;
5382 			}
5383 		}
5384 		break;
5385 
5386 	case LPFC_VPORT_READY:
5387 		if (vport->fc_flag & FC_RSCN_MODE) {
5388 			lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
5389 					 "0231 RSCN timeout Data: x%x "
5390 					 "x%x\n",
5391 					 vport->fc_ns_retry, LPFC_MAX_NS_RETRY);
5392 
5393 			/* Cleanup any outstanding ELS commands */
5394 			lpfc_els_flush_cmd(vport);
5395 
5396 			lpfc_els_flush_rscn(vport);
5397 			lpfc_disc_flush_list(vport);
5398 		}
5399 		break;
5400 
5401 	default:
5402 		lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
5403 				 "0273 Unexpected discovery timeout, "
5404 				 "vport State x%x\n", vport->port_state);
5405 		break;
5406 	}
5407 
5408 	switch (phba->link_state) {
5409 	case LPFC_CLEAR_LA:
5410 				/* CLEAR LA timeout */
5411 		lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
5412 				 "0228 CLEAR LA timeout\n");
5413 		clrlaerr = 1;
5414 		break;
5415 
5416 	case LPFC_LINK_UP:
5417 		lpfc_issue_clear_la(phba, vport);
5418 		/* Drop thru */
5419 	case LPFC_LINK_UNKNOWN:
5420 	case LPFC_WARM_START:
5421 	case LPFC_INIT_START:
5422 	case LPFC_INIT_MBX_CMDS:
5423 	case LPFC_LINK_DOWN:
5424 	case LPFC_HBA_ERROR:
5425 		lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
5426 				 "0230 Unexpected timeout, hba link "
5427 				 "state x%x\n", phba->link_state);
5428 		clrlaerr = 1;
5429 		break;
5430 
5431 	case LPFC_HBA_READY:
5432 		break;
5433 	}
5434 
5435 	if (clrlaerr) {
5436 		lpfc_disc_flush_list(vport);
5437 		psli->ring[(psli->extra_ring)].flag &= ~LPFC_STOP_IOCB_EVENT;
5438 		psli->ring[(psli->fcp_ring)].flag &= ~LPFC_STOP_IOCB_EVENT;
5439 		psli->ring[(psli->next_ring)].flag &= ~LPFC_STOP_IOCB_EVENT;
5440 		vport->port_state = LPFC_VPORT_READY;
5441 	}
5442 
5443 	return;
5444 }
5445 
5446 /*
5447  * This routine handles processing a NameServer REG_LOGIN mailbox
5448  * command upon completion. It is setup in the LPFC_MBOXQ
5449  * as the completion routine when the command is
5450  * handed off to the SLI layer.
5451  */
5452 void
5453 lpfc_mbx_cmpl_fdmi_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
5454 {
5455 	MAILBOX_t *mb = &pmb->u.mb;
5456 	struct lpfc_dmabuf   *mp = (struct lpfc_dmabuf *) (pmb->context1);
5457 	struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) pmb->context2;
5458 	struct lpfc_vport    *vport = pmb->vport;
5459 
5460 	pmb->context1 = NULL;
5461 	pmb->context2 = NULL;
5462 
5463 	if (phba->sli_rev < LPFC_SLI_REV4)
5464 		ndlp->nlp_rpi = mb->un.varWords[0];
5465 	ndlp->nlp_flag |= NLP_RPI_REGISTERED;
5466 	ndlp->nlp_type |= NLP_FABRIC;
5467 	lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
5468 
5469 	/*
5470 	 * Start issuing Fabric-Device Management Interface (FDMI) command to
5471 	 * 0xfffffa (FDMI well known port) or Delay issuing FDMI command if
5472 	 * fdmi-on=2 (supporting RPA/hostnmae)
5473 	 */
5474 
5475 	if (vport->cfg_fdmi_on == 1)
5476 		lpfc_fdmi_cmd(vport, ndlp, SLI_MGMT_DHBA);
5477 	else
5478 		mod_timer(&vport->fc_fdmitmo,
5479 			  jiffies + msecs_to_jiffies(1000 * 60));
5480 
5481 	/* decrement the node reference count held for this callback
5482 	 * function.
5483 	 */
5484 	lpfc_nlp_put(ndlp);
5485 	lpfc_mbuf_free(phba, mp->virt, mp->phys);
5486 	kfree(mp);
5487 	mempool_free(pmb, phba->mbox_mem_pool);
5488 
5489 	return;
5490 }
5491 
5492 static int
5493 lpfc_filter_by_rpi(struct lpfc_nodelist *ndlp, void *param)
5494 {
5495 	uint16_t *rpi = param;
5496 
5497 	/* check for active node */
5498 	if (!NLP_CHK_NODE_ACT(ndlp))
5499 		return 0;
5500 
5501 	return ndlp->nlp_rpi == *rpi;
5502 }
5503 
5504 static int
5505 lpfc_filter_by_wwpn(struct lpfc_nodelist *ndlp, void *param)
5506 {
5507 	return memcmp(&ndlp->nlp_portname, param,
5508 		      sizeof(ndlp->nlp_portname)) == 0;
5509 }
5510 
5511 static struct lpfc_nodelist *
5512 __lpfc_find_node(struct lpfc_vport *vport, node_filter filter, void *param)
5513 {
5514 	struct lpfc_nodelist *ndlp;
5515 
5516 	list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
5517 		if (filter(ndlp, param)) {
5518 			lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
5519 					 "3185 FIND node filter %p DID "
5520 					 "Data: x%p x%x x%x\n",
5521 					 filter, ndlp, ndlp->nlp_DID,
5522 					 ndlp->nlp_flag);
5523 			return ndlp;
5524 		}
5525 	}
5526 	lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
5527 			 "3186 FIND node filter %p NOT FOUND.\n", filter);
5528 	return NULL;
5529 }
5530 
5531 /*
5532  * This routine looks up the ndlp lists for the given RPI. If rpi found it
5533  * returns the node list element pointer else return NULL.
5534  */
5535 struct lpfc_nodelist *
5536 __lpfc_findnode_rpi(struct lpfc_vport *vport, uint16_t rpi)
5537 {
5538 	return __lpfc_find_node(vport, lpfc_filter_by_rpi, &rpi);
5539 }
5540 
5541 /*
5542  * This routine looks up the ndlp lists for the given WWPN. If WWPN found it
5543  * returns the node element list pointer else return NULL.
5544  */
5545 struct lpfc_nodelist *
5546 lpfc_findnode_wwpn(struct lpfc_vport *vport, struct lpfc_name *wwpn)
5547 {
5548 	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
5549 	struct lpfc_nodelist *ndlp;
5550 
5551 	spin_lock_irq(shost->host_lock);
5552 	ndlp = __lpfc_find_node(vport, lpfc_filter_by_wwpn, wwpn);
5553 	spin_unlock_irq(shost->host_lock);
5554 	return ndlp;
5555 }
5556 
5557 /*
5558  * This routine looks up the ndlp lists for the given RPI. If the rpi
5559  * is found, the routine returns the node element list pointer else
5560  * return NULL.
5561  */
5562 struct lpfc_nodelist *
5563 lpfc_findnode_rpi(struct lpfc_vport *vport, uint16_t rpi)
5564 {
5565 	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
5566 	struct lpfc_nodelist *ndlp;
5567 
5568 	spin_lock_irq(shost->host_lock);
5569 	ndlp = __lpfc_findnode_rpi(vport, rpi);
5570 	spin_unlock_irq(shost->host_lock);
5571 	return ndlp;
5572 }
5573 
5574 /**
5575  * lpfc_find_vport_by_vpid - Find a vport on a HBA through vport identifier
5576  * @phba: pointer to lpfc hba data structure.
5577  * @vpi: the physical host virtual N_Port identifier.
5578  *
5579  * This routine finds a vport on a HBA (referred by @phba) through a
5580  * @vpi. The function walks the HBA's vport list and returns the address
5581  * of the vport with the matching @vpi.
5582  *
5583  * Return code
5584  *    NULL - No vport with the matching @vpi found
5585  *    Otherwise - Address to the vport with the matching @vpi.
5586  **/
5587 struct lpfc_vport *
5588 lpfc_find_vport_by_vpid(struct lpfc_hba *phba, uint16_t vpi)
5589 {
5590 	struct lpfc_vport *vport;
5591 	unsigned long flags;
5592 	int i = 0;
5593 
5594 	/* The physical ports are always vpi 0 - translate is unnecessary. */
5595 	if (vpi > 0) {
5596 		/*
5597 		 * Translate the physical vpi to the logical vpi.  The
5598 		 * vport stores the logical vpi.
5599 		 */
5600 		for (i = 0; i < phba->max_vpi; i++) {
5601 			if (vpi == phba->vpi_ids[i])
5602 				break;
5603 		}
5604 
5605 		if (i >= phba->max_vpi) {
5606 			lpfc_printf_log(phba, KERN_ERR, LOG_ELS,
5607 					 "2936 Could not find Vport mapped "
5608 					 "to vpi %d\n", vpi);
5609 			return NULL;
5610 		}
5611 	}
5612 
5613 	spin_lock_irqsave(&phba->hbalock, flags);
5614 	list_for_each_entry(vport, &phba->port_list, listentry) {
5615 		if (vport->vpi == i) {
5616 			spin_unlock_irqrestore(&phba->hbalock, flags);
5617 			return vport;
5618 		}
5619 	}
5620 	spin_unlock_irqrestore(&phba->hbalock, flags);
5621 	return NULL;
5622 }
5623 
5624 void
5625 lpfc_nlp_init(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
5626 	      uint32_t did)
5627 {
5628 	memset(ndlp, 0, sizeof (struct lpfc_nodelist));
5629 
5630 	lpfc_initialize_node(vport, ndlp, did);
5631 	INIT_LIST_HEAD(&ndlp->nlp_listp);
5632 	if (vport->phba->sli_rev == LPFC_SLI_REV4) {
5633 		ndlp->nlp_rpi = lpfc_sli4_alloc_rpi(vport->phba);
5634 		ndlp->active_rrqs_xri_bitmap =
5635 				mempool_alloc(vport->phba->active_rrq_pool,
5636 					      GFP_KERNEL);
5637 		if (ndlp->active_rrqs_xri_bitmap)
5638 			memset(ndlp->active_rrqs_xri_bitmap, 0,
5639 			       ndlp->phba->cfg_rrq_xri_bitmap_sz);
5640 	}
5641 
5642 
5643 
5644 	lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE,
5645 		"node init:       did:x%x",
5646 		ndlp->nlp_DID, 0, 0);
5647 
5648 	return;
5649 }
5650 
5651 /* This routine releases all resources associated with a specifc NPort's ndlp
5652  * and mempool_free's the nodelist.
5653  */
5654 static void
5655 lpfc_nlp_release(struct kref *kref)
5656 {
5657 	struct lpfc_hba *phba;
5658 	unsigned long flags;
5659 	struct lpfc_nodelist *ndlp = container_of(kref, struct lpfc_nodelist,
5660 						  kref);
5661 
5662 	lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
5663 		"node release:    did:x%x flg:x%x type:x%x",
5664 		ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type);
5665 
5666 	lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_NODE,
5667 			"0279 lpfc_nlp_release: ndlp:x%p did %x "
5668 			"usgmap:x%x refcnt:%d\n",
5669 			(void *)ndlp, ndlp->nlp_DID, ndlp->nlp_usg_map,
5670 			atomic_read(&ndlp->kref.refcount));
5671 
5672 	/* remove ndlp from action. */
5673 	lpfc_nlp_remove(ndlp->vport, ndlp);
5674 
5675 	/* clear the ndlp active flag for all release cases */
5676 	phba = ndlp->phba;
5677 	spin_lock_irqsave(&phba->ndlp_lock, flags);
5678 	NLP_CLR_NODE_ACT(ndlp);
5679 	spin_unlock_irqrestore(&phba->ndlp_lock, flags);
5680 	if (phba->sli_rev == LPFC_SLI_REV4)
5681 		lpfc_sli4_free_rpi(phba, ndlp->nlp_rpi);
5682 
5683 	/* free ndlp memory for final ndlp release */
5684 	if (NLP_CHK_FREE_REQ(ndlp)) {
5685 		kfree(ndlp->lat_data);
5686 		if (phba->sli_rev == LPFC_SLI_REV4)
5687 			mempool_free(ndlp->active_rrqs_xri_bitmap,
5688 				     ndlp->phba->active_rrq_pool);
5689 		mempool_free(ndlp, ndlp->phba->nlp_mem_pool);
5690 	}
5691 }
5692 
5693 /* This routine bumps the reference count for a ndlp structure to ensure
5694  * that one discovery thread won't free a ndlp while another discovery thread
5695  * is using it.
5696  */
5697 struct lpfc_nodelist *
5698 lpfc_nlp_get(struct lpfc_nodelist *ndlp)
5699 {
5700 	struct lpfc_hba *phba;
5701 	unsigned long flags;
5702 
5703 	if (ndlp) {
5704 		lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
5705 			"node get:        did:x%x flg:x%x refcnt:x%x",
5706 			ndlp->nlp_DID, ndlp->nlp_flag,
5707 			atomic_read(&ndlp->kref.refcount));
5708 		/* The check of ndlp usage to prevent incrementing the
5709 		 * ndlp reference count that is in the process of being
5710 		 * released.
5711 		 */
5712 		phba = ndlp->phba;
5713 		spin_lock_irqsave(&phba->ndlp_lock, flags);
5714 		if (!NLP_CHK_NODE_ACT(ndlp) || NLP_CHK_FREE_ACK(ndlp)) {
5715 			spin_unlock_irqrestore(&phba->ndlp_lock, flags);
5716 			lpfc_printf_vlog(ndlp->vport, KERN_WARNING, LOG_NODE,
5717 				"0276 lpfc_nlp_get: ndlp:x%p "
5718 				"usgmap:x%x refcnt:%d\n",
5719 				(void *)ndlp, ndlp->nlp_usg_map,
5720 				atomic_read(&ndlp->kref.refcount));
5721 			return NULL;
5722 		} else
5723 			kref_get(&ndlp->kref);
5724 		spin_unlock_irqrestore(&phba->ndlp_lock, flags);
5725 	}
5726 	return ndlp;
5727 }
5728 
5729 /* This routine decrements the reference count for a ndlp structure. If the
5730  * count goes to 0, this indicates the the associated nodelist should be
5731  * freed. Returning 1 indicates the ndlp resource has been released; on the
5732  * other hand, returning 0 indicates the ndlp resource has not been released
5733  * yet.
5734  */
5735 int
5736 lpfc_nlp_put(struct lpfc_nodelist *ndlp)
5737 {
5738 	struct lpfc_hba *phba;
5739 	unsigned long flags;
5740 
5741 	if (!ndlp)
5742 		return 1;
5743 
5744 	lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
5745 	"node put:        did:x%x flg:x%x refcnt:x%x",
5746 		ndlp->nlp_DID, ndlp->nlp_flag,
5747 		atomic_read(&ndlp->kref.refcount));
5748 	phba = ndlp->phba;
5749 	spin_lock_irqsave(&phba->ndlp_lock, flags);
5750 	/* Check the ndlp memory free acknowledge flag to avoid the
5751 	 * possible race condition that kref_put got invoked again
5752 	 * after previous one has done ndlp memory free.
5753 	 */
5754 	if (NLP_CHK_FREE_ACK(ndlp)) {
5755 		spin_unlock_irqrestore(&phba->ndlp_lock, flags);
5756 		lpfc_printf_vlog(ndlp->vport, KERN_WARNING, LOG_NODE,
5757 				"0274 lpfc_nlp_put: ndlp:x%p "
5758 				"usgmap:x%x refcnt:%d\n",
5759 				(void *)ndlp, ndlp->nlp_usg_map,
5760 				atomic_read(&ndlp->kref.refcount));
5761 		return 1;
5762 	}
5763 	/* Check the ndlp inactivate log flag to avoid the possible
5764 	 * race condition that kref_put got invoked again after ndlp
5765 	 * is already in inactivating state.
5766 	 */
5767 	if (NLP_CHK_IACT_REQ(ndlp)) {
5768 		spin_unlock_irqrestore(&phba->ndlp_lock, flags);
5769 		lpfc_printf_vlog(ndlp->vport, KERN_WARNING, LOG_NODE,
5770 				"0275 lpfc_nlp_put: ndlp:x%p "
5771 				"usgmap:x%x refcnt:%d\n",
5772 				(void *)ndlp, ndlp->nlp_usg_map,
5773 				atomic_read(&ndlp->kref.refcount));
5774 		return 1;
5775 	}
5776 	/* For last put, mark the ndlp usage flags to make sure no
5777 	 * other kref_get and kref_put on the same ndlp shall get
5778 	 * in between the process when the final kref_put has been
5779 	 * invoked on this ndlp.
5780 	 */
5781 	if (atomic_read(&ndlp->kref.refcount) == 1) {
5782 		/* Indicate ndlp is put to inactive state. */
5783 		NLP_SET_IACT_REQ(ndlp);
5784 		/* Acknowledge ndlp memory free has been seen. */
5785 		if (NLP_CHK_FREE_REQ(ndlp))
5786 			NLP_SET_FREE_ACK(ndlp);
5787 	}
5788 	spin_unlock_irqrestore(&phba->ndlp_lock, flags);
5789 	/* Note, the kref_put returns 1 when decrementing a reference
5790 	 * count that was 1, it invokes the release callback function,
5791 	 * but it still left the reference count as 1 (not actually
5792 	 * performs the last decrementation). Otherwise, it actually
5793 	 * decrements the reference count and returns 0.
5794 	 */
5795 	return kref_put(&ndlp->kref, lpfc_nlp_release);
5796 }
5797 
5798 /* This routine free's the specified nodelist if it is not in use
5799  * by any other discovery thread. This routine returns 1 if the
5800  * ndlp has been freed. A return value of 0 indicates the ndlp is
5801  * not yet been released.
5802  */
5803 int
5804 lpfc_nlp_not_used(struct lpfc_nodelist *ndlp)
5805 {
5806 	lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
5807 		"node not used:   did:x%x flg:x%x refcnt:x%x",
5808 		ndlp->nlp_DID, ndlp->nlp_flag,
5809 		atomic_read(&ndlp->kref.refcount));
5810 	if (atomic_read(&ndlp->kref.refcount) == 1)
5811 		if (lpfc_nlp_put(ndlp))
5812 			return 1;
5813 	return 0;
5814 }
5815 
5816 /**
5817  * lpfc_fcf_inuse - Check if FCF can be unregistered.
5818  * @phba: Pointer to hba context object.
5819  *
5820  * This function iterate through all FC nodes associated
5821  * will all vports to check if there is any node with
5822  * fc_rports associated with it. If there is an fc_rport
5823  * associated with the node, then the node is either in
5824  * discovered state or its devloss_timer is pending.
5825  */
5826 static int
5827 lpfc_fcf_inuse(struct lpfc_hba *phba)
5828 {
5829 	struct lpfc_vport **vports;
5830 	int i, ret = 0;
5831 	struct lpfc_nodelist *ndlp;
5832 	struct Scsi_Host  *shost;
5833 
5834 	vports = lpfc_create_vport_work_array(phba);
5835 
5836 	/* If driver cannot allocate memory, indicate fcf is in use */
5837 	if (!vports)
5838 		return 1;
5839 
5840 	for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
5841 		shost = lpfc_shost_from_vport(vports[i]);
5842 		spin_lock_irq(shost->host_lock);
5843 		/*
5844 		 * IF the CVL_RCVD bit is not set then we have sent the
5845 		 * flogi.
5846 		 * If dev_loss fires while we are waiting we do not want to
5847 		 * unreg the fcf.
5848 		 */
5849 		if (!(vports[i]->fc_flag & FC_VPORT_CVL_RCVD)) {
5850 			spin_unlock_irq(shost->host_lock);
5851 			ret =  1;
5852 			goto out;
5853 		}
5854 		list_for_each_entry(ndlp, &vports[i]->fc_nodes, nlp_listp) {
5855 			if (NLP_CHK_NODE_ACT(ndlp) && ndlp->rport &&
5856 			  (ndlp->rport->roles & FC_RPORT_ROLE_FCP_TARGET)) {
5857 				ret = 1;
5858 				spin_unlock_irq(shost->host_lock);
5859 				goto out;
5860 			} else if (ndlp->nlp_flag & NLP_RPI_REGISTERED) {
5861 				ret = 1;
5862 				lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
5863 						"2624 RPI %x DID %x flag %x "
5864 						"still logged in\n",
5865 						ndlp->nlp_rpi, ndlp->nlp_DID,
5866 						ndlp->nlp_flag);
5867 			}
5868 		}
5869 		spin_unlock_irq(shost->host_lock);
5870 	}
5871 out:
5872 	lpfc_destroy_vport_work_array(phba, vports);
5873 	return ret;
5874 }
5875 
5876 /**
5877  * lpfc_unregister_vfi_cmpl - Completion handler for unreg vfi.
5878  * @phba: Pointer to hba context object.
5879  * @mboxq: Pointer to mailbox object.
5880  *
5881  * This function frees memory associated with the mailbox command.
5882  */
5883 void
5884 lpfc_unregister_vfi_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
5885 {
5886 	struct lpfc_vport *vport = mboxq->vport;
5887 	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
5888 
5889 	if (mboxq->u.mb.mbxStatus) {
5890 		lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY|LOG_MBOX,
5891 			"2555 UNREG_VFI mbxStatus error x%x "
5892 			"HBA state x%x\n",
5893 			mboxq->u.mb.mbxStatus, vport->port_state);
5894 	}
5895 	spin_lock_irq(shost->host_lock);
5896 	phba->pport->fc_flag &= ~FC_VFI_REGISTERED;
5897 	spin_unlock_irq(shost->host_lock);
5898 	mempool_free(mboxq, phba->mbox_mem_pool);
5899 	return;
5900 }
5901 
5902 /**
5903  * lpfc_unregister_fcfi_cmpl - Completion handler for unreg fcfi.
5904  * @phba: Pointer to hba context object.
5905  * @mboxq: Pointer to mailbox object.
5906  *
5907  * This function frees memory associated with the mailbox command.
5908  */
5909 static void
5910 lpfc_unregister_fcfi_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
5911 {
5912 	struct lpfc_vport *vport = mboxq->vport;
5913 
5914 	if (mboxq->u.mb.mbxStatus) {
5915 		lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY|LOG_MBOX,
5916 			"2550 UNREG_FCFI mbxStatus error x%x "
5917 			"HBA state x%x\n",
5918 			mboxq->u.mb.mbxStatus, vport->port_state);
5919 	}
5920 	mempool_free(mboxq, phba->mbox_mem_pool);
5921 	return;
5922 }
5923 
5924 /**
5925  * lpfc_unregister_fcf_prep - Unregister fcf record preparation
5926  * @phba: Pointer to hba context object.
5927  *
5928  * This function prepare the HBA for unregistering the currently registered
5929  * FCF from the HBA. It performs unregistering, in order, RPIs, VPIs, and
5930  * VFIs.
5931  */
5932 int
5933 lpfc_unregister_fcf_prep(struct lpfc_hba *phba)
5934 {
5935 	struct lpfc_vport **vports;
5936 	struct lpfc_nodelist *ndlp;
5937 	struct Scsi_Host *shost;
5938 	int i = 0, rc;
5939 
5940 	/* Unregister RPIs */
5941 	if (lpfc_fcf_inuse(phba))
5942 		lpfc_unreg_hba_rpis(phba);
5943 
5944 	/* At this point, all discovery is aborted */
5945 	phba->pport->port_state = LPFC_VPORT_UNKNOWN;
5946 
5947 	/* Unregister VPIs */
5948 	vports = lpfc_create_vport_work_array(phba);
5949 	if (vports && (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED))
5950 		for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
5951 			/* Stop FLOGI/FDISC retries */
5952 			ndlp = lpfc_findnode_did(vports[i], Fabric_DID);
5953 			if (ndlp)
5954 				lpfc_cancel_retry_delay_tmo(vports[i], ndlp);
5955 			lpfc_cleanup_pending_mbox(vports[i]);
5956 			if (phba->sli_rev == LPFC_SLI_REV4)
5957 				lpfc_sli4_unreg_all_rpis(vports[i]);
5958 			lpfc_mbx_unreg_vpi(vports[i]);
5959 			shost = lpfc_shost_from_vport(vports[i]);
5960 			spin_lock_irq(shost->host_lock);
5961 			vports[i]->fc_flag |= FC_VPORT_NEEDS_INIT_VPI;
5962 			vports[i]->vpi_state &= ~LPFC_VPI_REGISTERED;
5963 			spin_unlock_irq(shost->host_lock);
5964 		}
5965 	lpfc_destroy_vport_work_array(phba, vports);
5966 	if (i == 0 && (!(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED))) {
5967 		ndlp = lpfc_findnode_did(phba->pport, Fabric_DID);
5968 		if (ndlp)
5969 			lpfc_cancel_retry_delay_tmo(phba->pport, ndlp);
5970 		lpfc_cleanup_pending_mbox(phba->pport);
5971 		if (phba->sli_rev == LPFC_SLI_REV4)
5972 			lpfc_sli4_unreg_all_rpis(phba->pport);
5973 		lpfc_mbx_unreg_vpi(phba->pport);
5974 		shost = lpfc_shost_from_vport(phba->pport);
5975 		spin_lock_irq(shost->host_lock);
5976 		phba->pport->fc_flag |= FC_VPORT_NEEDS_INIT_VPI;
5977 		phba->pport->vpi_state &= ~LPFC_VPI_REGISTERED;
5978 		spin_unlock_irq(shost->host_lock);
5979 	}
5980 
5981 	/* Cleanup any outstanding ELS commands */
5982 	lpfc_els_flush_all_cmd(phba);
5983 
5984 	/* Unregister the physical port VFI */
5985 	rc = lpfc_issue_unreg_vfi(phba->pport);
5986 	return rc;
5987 }
5988 
5989 /**
5990  * lpfc_sli4_unregister_fcf - Unregister currently registered FCF record
5991  * @phba: Pointer to hba context object.
5992  *
5993  * This function issues synchronous unregister FCF mailbox command to HBA to
5994  * unregister the currently registered FCF record. The driver does not reset
5995  * the driver FCF usage state flags.
5996  *
5997  * Return 0 if successfully issued, none-zero otherwise.
5998  */
5999 int
6000 lpfc_sli4_unregister_fcf(struct lpfc_hba *phba)
6001 {
6002 	LPFC_MBOXQ_t *mbox;
6003 	int rc;
6004 
6005 	mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
6006 	if (!mbox) {
6007 		lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY|LOG_MBOX,
6008 				"2551 UNREG_FCFI mbox allocation failed"
6009 				"HBA state x%x\n", phba->pport->port_state);
6010 		return -ENOMEM;
6011 	}
6012 	lpfc_unreg_fcfi(mbox, phba->fcf.fcfi);
6013 	mbox->vport = phba->pport;
6014 	mbox->mbox_cmpl = lpfc_unregister_fcfi_cmpl;
6015 	rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
6016 
6017 	if (rc == MBX_NOT_FINISHED) {
6018 		lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
6019 				"2552 Unregister FCFI command failed rc x%x "
6020 				"HBA state x%x\n",
6021 				rc, phba->pport->port_state);
6022 		return -EINVAL;
6023 	}
6024 	return 0;
6025 }
6026 
6027 /**
6028  * lpfc_unregister_fcf_rescan - Unregister currently registered fcf and rescan
6029  * @phba: Pointer to hba context object.
6030  *
6031  * This function unregisters the currently reigstered FCF. This function
6032  * also tries to find another FCF for discovery by rescan the HBA FCF table.
6033  */
6034 void
6035 lpfc_unregister_fcf_rescan(struct lpfc_hba *phba)
6036 {
6037 	int rc;
6038 
6039 	/* Preparation for unregistering fcf */
6040 	rc = lpfc_unregister_fcf_prep(phba);
6041 	if (rc) {
6042 		lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY,
6043 				"2748 Failed to prepare for unregistering "
6044 				"HBA's FCF record: rc=%d\n", rc);
6045 		return;
6046 	}
6047 
6048 	/* Now, unregister FCF record and reset HBA FCF state */
6049 	rc = lpfc_sli4_unregister_fcf(phba);
6050 	if (rc)
6051 		return;
6052 	/* Reset HBA FCF states after successful unregister FCF */
6053 	phba->fcf.fcf_flag = 0;
6054 	phba->fcf.current_rec.flag = 0;
6055 
6056 	/*
6057 	 * If driver is not unloading, check if there is any other
6058 	 * FCF record that can be used for discovery.
6059 	 */
6060 	if ((phba->pport->load_flag & FC_UNLOADING) ||
6061 	    (phba->link_state < LPFC_LINK_UP))
6062 		return;
6063 
6064 	/* This is considered as the initial FCF discovery scan */
6065 	spin_lock_irq(&phba->hbalock);
6066 	phba->fcf.fcf_flag |= FCF_INIT_DISC;
6067 	spin_unlock_irq(&phba->hbalock);
6068 
6069 	/* Reset FCF roundrobin bmask for new discovery */
6070 	lpfc_sli4_clear_fcf_rr_bmask(phba);
6071 
6072 	rc = lpfc_sli4_fcf_scan_read_fcf_rec(phba, LPFC_FCOE_FCF_GET_FIRST);
6073 
6074 	if (rc) {
6075 		spin_lock_irq(&phba->hbalock);
6076 		phba->fcf.fcf_flag &= ~FCF_INIT_DISC;
6077 		spin_unlock_irq(&phba->hbalock);
6078 		lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY|LOG_MBOX,
6079 				"2553 lpfc_unregister_unused_fcf failed "
6080 				"to read FCF record HBA state x%x\n",
6081 				phba->pport->port_state);
6082 	}
6083 }
6084 
6085 /**
6086  * lpfc_unregister_fcf - Unregister the currently registered fcf record
6087  * @phba: Pointer to hba context object.
6088  *
6089  * This function just unregisters the currently reigstered FCF. It does not
6090  * try to find another FCF for discovery.
6091  */
6092 void
6093 lpfc_unregister_fcf(struct lpfc_hba *phba)
6094 {
6095 	int rc;
6096 
6097 	/* Preparation for unregistering fcf */
6098 	rc = lpfc_unregister_fcf_prep(phba);
6099 	if (rc) {
6100 		lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY,
6101 				"2749 Failed to prepare for unregistering "
6102 				"HBA's FCF record: rc=%d\n", rc);
6103 		return;
6104 	}
6105 
6106 	/* Now, unregister FCF record and reset HBA FCF state */
6107 	rc = lpfc_sli4_unregister_fcf(phba);
6108 	if (rc)
6109 		return;
6110 	/* Set proper HBA FCF states after successful unregister FCF */
6111 	spin_lock_irq(&phba->hbalock);
6112 	phba->fcf.fcf_flag &= ~FCF_REGISTERED;
6113 	spin_unlock_irq(&phba->hbalock);
6114 }
6115 
6116 /**
6117  * lpfc_unregister_unused_fcf - Unregister FCF if all devices are disconnected.
6118  * @phba: Pointer to hba context object.
6119  *
6120  * This function check if there are any connected remote port for the FCF and
6121  * if all the devices are disconnected, this function unregister FCFI.
6122  * This function also tries to use another FCF for discovery.
6123  */
6124 void
6125 lpfc_unregister_unused_fcf(struct lpfc_hba *phba)
6126 {
6127 	/*
6128 	 * If HBA is not running in FIP mode, if HBA does not support
6129 	 * FCoE, if FCF discovery is ongoing, or if FCF has not been
6130 	 * registered, do nothing.
6131 	 */
6132 	spin_lock_irq(&phba->hbalock);
6133 	if (!(phba->hba_flag & HBA_FCOE_MODE) ||
6134 	    !(phba->fcf.fcf_flag & FCF_REGISTERED) ||
6135 	    !(phba->hba_flag & HBA_FIP_SUPPORT) ||
6136 	    (phba->fcf.fcf_flag & FCF_DISCOVERY) ||
6137 	    (phba->pport->port_state == LPFC_FLOGI)) {
6138 		spin_unlock_irq(&phba->hbalock);
6139 		return;
6140 	}
6141 	spin_unlock_irq(&phba->hbalock);
6142 
6143 	if (lpfc_fcf_inuse(phba))
6144 		return;
6145 
6146 	lpfc_unregister_fcf_rescan(phba);
6147 }
6148 
6149 /**
6150  * lpfc_read_fcf_conn_tbl - Create driver FCF connection table.
6151  * @phba: Pointer to hba context object.
6152  * @buff: Buffer containing the FCF connection table as in the config
6153  *         region.
6154  * This function create driver data structure for the FCF connection
6155  * record table read from config region 23.
6156  */
6157 static void
6158 lpfc_read_fcf_conn_tbl(struct lpfc_hba *phba,
6159 	uint8_t *buff)
6160 {
6161 	struct lpfc_fcf_conn_entry *conn_entry, *next_conn_entry;
6162 	struct lpfc_fcf_conn_hdr *conn_hdr;
6163 	struct lpfc_fcf_conn_rec *conn_rec;
6164 	uint32_t record_count;
6165 	int i;
6166 
6167 	/* Free the current connect table */
6168 	list_for_each_entry_safe(conn_entry, next_conn_entry,
6169 		&phba->fcf_conn_rec_list, list) {
6170 		list_del_init(&conn_entry->list);
6171 		kfree(conn_entry);
6172 	}
6173 
6174 	conn_hdr = (struct lpfc_fcf_conn_hdr *) buff;
6175 	record_count = conn_hdr->length * sizeof(uint32_t)/
6176 		sizeof(struct lpfc_fcf_conn_rec);
6177 
6178 	conn_rec = (struct lpfc_fcf_conn_rec *)
6179 		(buff + sizeof(struct lpfc_fcf_conn_hdr));
6180 
6181 	for (i = 0; i < record_count; i++) {
6182 		if (!(conn_rec[i].flags & FCFCNCT_VALID))
6183 			continue;
6184 		conn_entry = kzalloc(sizeof(struct lpfc_fcf_conn_entry),
6185 			GFP_KERNEL);
6186 		if (!conn_entry) {
6187 			lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6188 				"2566 Failed to allocate connection"
6189 				" table entry\n");
6190 			return;
6191 		}
6192 
6193 		memcpy(&conn_entry->conn_rec, &conn_rec[i],
6194 			sizeof(struct lpfc_fcf_conn_rec));
6195 		list_add_tail(&conn_entry->list,
6196 			&phba->fcf_conn_rec_list);
6197 	}
6198 
6199 	if (!list_empty(&phba->fcf_conn_rec_list)) {
6200 		i = 0;
6201 		list_for_each_entry(conn_entry, &phba->fcf_conn_rec_list,
6202 				    list) {
6203 			conn_rec = &conn_entry->conn_rec;
6204 			lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
6205 					"3345 FCF connection list rec[%02d]: "
6206 					"flags:x%04x, vtag:x%04x, "
6207 					"fabric_name:x%02x:%02x:%02x:%02x:"
6208 					"%02x:%02x:%02x:%02x, "
6209 					"switch_name:x%02x:%02x:%02x:%02x:"
6210 					"%02x:%02x:%02x:%02x\n", i++,
6211 					conn_rec->flags, conn_rec->vlan_tag,
6212 					conn_rec->fabric_name[0],
6213 					conn_rec->fabric_name[1],
6214 					conn_rec->fabric_name[2],
6215 					conn_rec->fabric_name[3],
6216 					conn_rec->fabric_name[4],
6217 					conn_rec->fabric_name[5],
6218 					conn_rec->fabric_name[6],
6219 					conn_rec->fabric_name[7],
6220 					conn_rec->switch_name[0],
6221 					conn_rec->switch_name[1],
6222 					conn_rec->switch_name[2],
6223 					conn_rec->switch_name[3],
6224 					conn_rec->switch_name[4],
6225 					conn_rec->switch_name[5],
6226 					conn_rec->switch_name[6],
6227 					conn_rec->switch_name[7]);
6228 		}
6229 	}
6230 }
6231 
6232 /**
6233  * lpfc_read_fcoe_param - Read FCoe parameters from conf region..
6234  * @phba: Pointer to hba context object.
6235  * @buff: Buffer containing the FCoE parameter data structure.
6236  *
6237  *  This function update driver data structure with config
6238  *  parameters read from config region 23.
6239  */
6240 static void
6241 lpfc_read_fcoe_param(struct lpfc_hba *phba,
6242 			uint8_t *buff)
6243 {
6244 	struct lpfc_fip_param_hdr *fcoe_param_hdr;
6245 	struct lpfc_fcoe_params *fcoe_param;
6246 
6247 	fcoe_param_hdr = (struct lpfc_fip_param_hdr *)
6248 		buff;
6249 	fcoe_param = (struct lpfc_fcoe_params *)
6250 		(buff + sizeof(struct lpfc_fip_param_hdr));
6251 
6252 	if ((fcoe_param_hdr->parm_version != FIPP_VERSION) ||
6253 		(fcoe_param_hdr->length != FCOE_PARAM_LENGTH))
6254 		return;
6255 
6256 	if (fcoe_param_hdr->parm_flags & FIPP_VLAN_VALID) {
6257 		phba->valid_vlan = 1;
6258 		phba->vlan_id = le16_to_cpu(fcoe_param->vlan_tag) &
6259 			0xFFF;
6260 	}
6261 
6262 	phba->fc_map[0] = fcoe_param->fc_map[0];
6263 	phba->fc_map[1] = fcoe_param->fc_map[1];
6264 	phba->fc_map[2] = fcoe_param->fc_map[2];
6265 	return;
6266 }
6267 
6268 /**
6269  * lpfc_get_rec_conf23 - Get a record type in config region data.
6270  * @buff: Buffer containing config region 23 data.
6271  * @size: Size of the data buffer.
6272  * @rec_type: Record type to be searched.
6273  *
6274  * This function searches config region data to find the beginning
6275  * of the record specified by record_type. If record found, this
6276  * function return pointer to the record else return NULL.
6277  */
6278 static uint8_t *
6279 lpfc_get_rec_conf23(uint8_t *buff, uint32_t size, uint8_t rec_type)
6280 {
6281 	uint32_t offset = 0, rec_length;
6282 
6283 	if ((buff[0] == LPFC_REGION23_LAST_REC) ||
6284 		(size < sizeof(uint32_t)))
6285 		return NULL;
6286 
6287 	rec_length = buff[offset + 1];
6288 
6289 	/*
6290 	 * One TLV record has one word header and number of data words
6291 	 * specified in the rec_length field of the record header.
6292 	 */
6293 	while ((offset + rec_length * sizeof(uint32_t) + sizeof(uint32_t))
6294 		<= size) {
6295 		if (buff[offset] == rec_type)
6296 			return &buff[offset];
6297 
6298 		if (buff[offset] == LPFC_REGION23_LAST_REC)
6299 			return NULL;
6300 
6301 		offset += rec_length * sizeof(uint32_t) + sizeof(uint32_t);
6302 		rec_length = buff[offset + 1];
6303 	}
6304 	return NULL;
6305 }
6306 
6307 /**
6308  * lpfc_parse_fcoe_conf - Parse FCoE config data read from config region 23.
6309  * @phba: Pointer to lpfc_hba data structure.
6310  * @buff: Buffer containing config region 23 data.
6311  * @size: Size of the data buffer.
6312  *
6313  * This function parses the FCoE config parameters in config region 23 and
6314  * populate driver data structure with the parameters.
6315  */
6316 void
6317 lpfc_parse_fcoe_conf(struct lpfc_hba *phba,
6318 		uint8_t *buff,
6319 		uint32_t size)
6320 {
6321 	uint32_t offset = 0, rec_length;
6322 	uint8_t *rec_ptr;
6323 
6324 	/*
6325 	 * If data size is less than 2 words signature and version cannot be
6326 	 * verified.
6327 	 */
6328 	if (size < 2*sizeof(uint32_t))
6329 		return;
6330 
6331 	/* Check the region signature first */
6332 	if (memcmp(buff, LPFC_REGION23_SIGNATURE, 4)) {
6333 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6334 			"2567 Config region 23 has bad signature\n");
6335 		return;
6336 	}
6337 
6338 	offset += 4;
6339 
6340 	/* Check the data structure version */
6341 	if (buff[offset] != LPFC_REGION23_VERSION) {
6342 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6343 			"2568 Config region 23 has bad version\n");
6344 		return;
6345 	}
6346 	offset += 4;
6347 
6348 	rec_length = buff[offset + 1];
6349 
6350 	/* Read FCoE param record */
6351 	rec_ptr = lpfc_get_rec_conf23(&buff[offset],
6352 			size - offset, FCOE_PARAM_TYPE);
6353 	if (rec_ptr)
6354 		lpfc_read_fcoe_param(phba, rec_ptr);
6355 
6356 	/* Read FCF connection table */
6357 	rec_ptr = lpfc_get_rec_conf23(&buff[offset],
6358 		size - offset, FCOE_CONN_TBL_TYPE);
6359 	if (rec_ptr)
6360 		lpfc_read_fcf_conn_tbl(phba, rec_ptr);
6361 
6362 }
6363