1	/*******************************************************************
2	* This file is part of the Emulex Linux Device Driver for *
3	* Fibre Channel Host Bus Adapters. *
4	* Copyright (C) 2017-2023 Broadcom. All Rights Reserved. The term *
5	* “Broadcom” refers to Broadcom Inc. and/or its subsidiaries. *
6	* Copyright (C) 2004-2016 Emulex. All rights reserved. *
7	* EMULEX and SLI are trademarks of Emulex. *
8	* www.broadcom.com *
9	* Portions Copyright (C) 2004-2005 Christoph Hellwig *
10	* *
11	* This program is free software; you can redistribute it and/or *
12	* modify it under the terms of version 2 of the GNU General *
13	* Public License as published by the Free Software Foundation. *
14	* This program is distributed in the hope that it will be useful. *
15	* ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND *
16	* WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, *
17	* FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE *
18	* DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD *
19	* TO BE LEGALLY INVALID. See the GNU General Public License for *
20	* more details, a copy of which can be found in the file COPYING *
21	* included with this package. *
22	*******************************************************************/
23
24	#include <linux/blkdev.h>
25	#include <linux/delay.h>
26	#include <linux/slab.h>
27	#include <linux/pci.h>
28	#include <linux/kthread.h>
29	#include <linux/interrupt.h>
30	#include <linux/lockdep.h>
31	#include <linux/utsname.h>
32
33	#include <scsi/scsi.h>
34	#include <scsi/scsi_device.h>
35	#include <scsi/scsi_host.h>
36	#include <scsi/scsi_transport_fc.h>
37	#include <scsi/fc/fc_fs.h>
38
39	#include "lpfc_hw4.h"
40	#include "lpfc_hw.h"
41	#include "lpfc_nl.h"
42	#include "lpfc_disc.h"
43	#include "lpfc_sli.h"
44	#include "lpfc_sli4.h"
45	#include "lpfc.h"
46	#include "lpfc_scsi.h"
47	#include "lpfc_nvme.h"
48	#include "lpfc_logmsg.h"
49	#include "lpfc_crtn.h"
50	#include "lpfc_vport.h"
51	#include "lpfc_debugfs.h"
52
53	/* AlpaArray for assignment of scsid for scan-down and bind_method */
54	static uint8_t lpfcAlpaArray[] = {
55	0xEF, 0xE8, 0xE4, 0xE2, 0xE1, 0xE0, 0xDC, 0xDA, 0xD9, 0xD6,
56	0xD5, 0xD4, 0xD3, 0xD2, 0xD1, 0xCE, 0xCD, 0xCC, 0xCB, 0xCA,
57	0xC9, 0xC7, 0xC6, 0xC5, 0xC3, 0xBC, 0xBA, 0xB9, 0xB6, 0xB5,
58	0xB4, 0xB3, 0xB2, 0xB1, 0xAE, 0xAD, 0xAC, 0xAB, 0xAA, 0xA9,
59	0xA7, 0xA6, 0xA5, 0xA3, 0x9F, 0x9E, 0x9D, 0x9B, 0x98, 0x97,
60	0x90, 0x8F, 0x88, 0x84, 0x82, 0x81, 0x80, 0x7C, 0x7A, 0x79,
61	0x76, 0x75, 0x74, 0x73, 0x72, 0x71, 0x6E, 0x6D, 0x6C, 0x6B,
62	0x6A, 0x69, 0x67, 0x66, 0x65, 0x63, 0x5C, 0x5A, 0x59, 0x56,
63	0x55, 0x54, 0x53, 0x52, 0x51, 0x4E, 0x4D, 0x4C, 0x4B, 0x4A,
64	0x49, 0x47, 0x46, 0x45, 0x43, 0x3C, 0x3A, 0x39, 0x36, 0x35,
65	0x34, 0x33, 0x32, 0x31, 0x2E, 0x2D, 0x2C, 0x2B, 0x2A, 0x29,
66	0x27, 0x26, 0x25, 0x23, 0x1F, 0x1E, 0x1D, 0x1B, 0x18, 0x17,
67	0x10, 0x0F, 0x08, 0x04, 0x02, 0x01
68	};
69
70	static void lpfc_disc_timeout_handler(struct lpfc_vport *);
71	static void lpfc_disc_flush_list(struct lpfc_vport *vport);
72	static void lpfc_unregister_fcfi_cmpl(struct lpfc_hba *, LPFC_MBOXQ_t *);
73	static int lpfc_fcf_inuse(struct lpfc_hba *);
74	static void lpfc_mbx_cmpl_read_sparam(struct lpfc_hba *, LPFC_MBOXQ_t *);
75	static void lpfc_check_inactive_vmid(struct lpfc_hba *phba);
76	static void lpfc_check_vmid_qfpa_issue(struct lpfc_hba *phba);
77
78	static int
79	lpfc_valid_xpt_node(struct lpfc_nodelist *ndlp)
80	{
81	if (ndlp->nlp_fc4_type ||
82	ndlp->nlp_type & NLP_FABRIC)
83	return 1;
84	return 0;
85	}
86	/* The source of a terminate rport I/O is either a dev_loss_tmo
87	* event or a call to fc_remove_host. While the rport should be
88	* valid during these downcalls, the transport can call twice
89	* in a single event. This routine provides somoe protection
90	* as the NDLP isn't really free, just released to the pool.
91	*/
92	static int
93	lpfc_rport_invalid(struct fc_rport *rport)
94	{
95	struct lpfc_rport_data *rdata;
96	struct lpfc_nodelist *ndlp;
97
98	if (!rport) {
99	pr_err("**** %s: NULL rport, exit.\n", __func__);
100	return -EINVAL;
101	}
102
103	rdata = rport->dd_data;
104	if (!rdata) {
105	pr_err("**** %s: NULL dd_data on rport x%px SID x%x\n",
106	__func__, rport, rport->scsi_target_id);
107	return -EINVAL;
108	}
109
110	ndlp = rdata->pnode;
111	if (!rdata->pnode) {
112	pr_info("**** %s: NULL ndlp on rport x%px SID x%x\n",
113	__func__, rport, rport->scsi_target_id);
114	return -EINVAL;
115	}
116
117	if (!ndlp->vport) {
118	pr_err("**** %s: Null vport on ndlp x%px, DID x%x rport x%px "
119	"SID x%x\n", __func__, ndlp, ndlp->nlp_DID, rport,
120	rport->scsi_target_id);
121	return -EINVAL;
122	}
123	return 0;
124	}
125
126	void
127	lpfc_terminate_rport_io(struct fc_rport *rport)
128	{
129	struct lpfc_rport_data *rdata;
130	struct lpfc_nodelist *ndlp;
131	struct lpfc_vport *vport;
132
133	if (lpfc_rport_invalid(rport))
134	return;
135
136	rdata = rport->dd_data;
137	ndlp = rdata->pnode;
138	vport = ndlp->vport;
139	lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
140	"rport terminate: sid:x%x did:x%x flg:x%x",
141	ndlp->nlp_sid, ndlp->nlp_DID, ndlp->nlp_flag);
142
143	if (ndlp->nlp_sid != NLP_NO_SID)
144	lpfc_sli_abort_iocb(vport, tgt_id: ndlp->nlp_sid, lun_id: 0, abort_cmd: LPFC_CTX_TGT);
145	}
146
147	/*
148	* This function will be called when dev_loss_tmo fire.
149	*/
150	void
151	lpfc_dev_loss_tmo_callbk(struct fc_rport *rport)
152	{
153	struct lpfc_nodelist *ndlp;
154	struct lpfc_vport *vport;
155	struct lpfc_hba *phba;
156	struct lpfc_work_evt *evtp;
157	unsigned long iflags;
158
159	ndlp = ((struct lpfc_rport_data *)rport->dd_data)->pnode;
160	if (!ndlp)
161	return;
162
163	vport = ndlp->vport;
164	phba = vport->phba;
165
166	lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
167	"rport devlosscb: sid:x%x did:x%x flg:x%x",
168	ndlp->nlp_sid, ndlp->nlp_DID, ndlp->nlp_flag);
169
170	lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_NODE,
171	"3181 dev_loss_callbk x%06x, rport x%px flg x%x "
172	"load_flag x%x refcnt %u state %d xpt x%x\n",
173	ndlp->nlp_DID, ndlp->rport, ndlp->nlp_flag,
174	vport->load_flag, kref_read(&ndlp->kref),
175	ndlp->nlp_state, ndlp->fc4_xpt_flags);
176
177	/* Don't schedule a worker thread event if the vport is going down. */
178	if (vport->load_flag & FC_UNLOADING) {
179	spin_lock_irqsave(&ndlp->lock, iflags);
180	ndlp->rport = NULL;
181
182	/* The scsi_transport is done with the rport so lpfc cannot
183	* call to unregister. Remove the scsi transport reference
184	* and clean up the SCSI transport node details.
185	*/
186	if (ndlp->fc4_xpt_flags & (NLP_XPT_REGD | SCSI_XPT_REGD)) {
187	ndlp->fc4_xpt_flags &= ~SCSI_XPT_REGD;
188
189	/* NVME transport-registered rports need the
190	* NLP_XPT_REGD flag to complete an unregister.
191	*/
192	if (!(ndlp->fc4_xpt_flags & NVME_XPT_REGD))
193	ndlp->fc4_xpt_flags &= ~NLP_XPT_REGD;
194	spin_unlock_irqrestore(lock: &ndlp->lock, flags: iflags);
195	lpfc_nlp_put(ndlp);
196	spin_lock_irqsave(&ndlp->lock, iflags);
197	}
198
199	/* Only 1 thread can drop the initial node reference. If
200	* another thread has set NLP_DROPPED, this thread is done.
201	*/
202	if (!(ndlp->fc4_xpt_flags & NVME_XPT_REGD) &&
203	!(ndlp->nlp_flag & NLP_DROPPED)) {
204	ndlp->nlp_flag |= NLP_DROPPED;
205	spin_unlock_irqrestore(lock: &ndlp->lock, flags: iflags);
206	lpfc_nlp_put(ndlp);
207	return;
208	}
209
210	spin_unlock_irqrestore(lock: &ndlp->lock, flags: iflags);
211	return;
212	}
213
214	if (ndlp->nlp_state == NLP_STE_MAPPED_NODE)
215	return;
216
217	if (rport->port_name != wwn_to_u64(wwn: ndlp->nlp_portname.u.wwn))
218	lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
219	"6789 rport name %llx != node port name %llx",
220	rport->port_name,
221	wwn_to_u64(ndlp->nlp_portname.u.wwn));
222
223	evtp = &ndlp->dev_loss_evt;
224
225	if (!list_empty(head: &evtp->evt_listp)) {
226	lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
227	"6790 rport name %llx dev_loss_evt pending\n",
228	rport->port_name);
229	return;
230	}
231
232	spin_lock_irqsave(&ndlp->lock, iflags);
233	ndlp->nlp_flag |= NLP_IN_DEV_LOSS;
234
235	/* If there is a PLOGI in progress, and we are in a
236	* NLP_NPR_2B_DISC state, don't turn off the flag.
237	*/
238	if (ndlp->nlp_state != NLP_STE_PLOGI_ISSUE)
239	ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
240
241	/*
242	* The backend does not expect any more calls associated with this
243	* rport. Remove the association between rport and ndlp.
244	*/
245	ndlp->fc4_xpt_flags &= ~SCSI_XPT_REGD;
246	((struct lpfc_rport_data *)rport->dd_data)->pnode = NULL;
247	ndlp->rport = NULL;
248	spin_unlock_irqrestore(lock: &ndlp->lock, flags: iflags);
249
250	if (phba->worker_thread) {
251	/* We need to hold the node by incrementing the reference
252	* count until this queued work is done
253	*/
254	evtp->evt_arg1 = lpfc_nlp_get(ndlp);
255
256	spin_lock_irqsave(&phba->hbalock, iflags);
257	if (evtp->evt_arg1) {
258	evtp->evt = LPFC_EVT_DEV_LOSS;
259	list_add_tail(new: &evtp->evt_listp, head: &phba->work_list);
260	lpfc_worker_wake_up(phba);
261	}
262	spin_unlock_irqrestore(lock: &phba->hbalock, flags: iflags);
263	} else {
264	lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_NODE,
265	"3188 worker thread is stopped %s x%06x, "
266	" rport x%px flg x%x load_flag x%x refcnt "
267	"%d\n", __func__, ndlp->nlp_DID,
268	ndlp->rport, ndlp->nlp_flag,
269	vport->load_flag, kref_read(&ndlp->kref));
270	if (!(ndlp->fc4_xpt_flags & NVME_XPT_REGD)) {
271	spin_lock_irqsave(&ndlp->lock, iflags);
272	/* Node is in dev loss. No further transaction. */
273	ndlp->nlp_flag &= ~NLP_IN_DEV_LOSS;
274	spin_unlock_irqrestore(lock: &ndlp->lock, flags: iflags);
275	lpfc_disc_state_machine(vport, ndlp, NULL,
276	NLP_EVT_DEVICE_RM);
277	}
278
279	}
280
281	return;
282	}
283
284	/**
285	* lpfc_check_inactive_vmid_one - VMID inactivity checker for a vport
286	* @vport: Pointer to vport context object.
287	*
288	* This function checks for idle VMID entries related to a particular vport. If
289	* found unused/idle, free them accordingly.
290	**/
291	static void lpfc_check_inactive_vmid_one(struct lpfc_vport *vport)
292	{
293	u16 keep;
294	u32 difftime = 0, r, bucket;
295	u64 *lta;
296	int cpu;
297	struct lpfc_vmid *vmp;
298
299	write_lock(&vport->vmid_lock);
300
301	if (!vport->cur_vmid_cnt)
302	goto out;
303
304	/* iterate through the table */
305	hash_for_each(vport->hash_table, bucket, vmp, hnode) {
306	keep = 0;
307	if (vmp->flag & LPFC_VMID_REGISTERED) {
308	/* check if the particular VMID is in use */
309	/* for all available per cpu variable */
310	for_each_possible_cpu(cpu) {
311	/* if last access time is less than timeout */
312	lta = per_cpu_ptr(vmp->last_io_time, cpu);
313	if (!lta)
314	continue;
315	difftime = (jiffies) - (*lta);
316	if ((vport->vmid_inactivity_timeout *
317	JIFFIES_PER_HR) > difftime) {
318	keep = 1;
319	break;
320	}
321	}
322
323	/* if none of the cpus have been used by the vm, */
324	/* remove the entry if already registered */
325	if (!keep) {
326	/* mark the entry for deregistration */
327	vmp->flag = LPFC_VMID_DE_REGISTER;
328	write_unlock(&vport->vmid_lock);
329	if (vport->vmid_priority_tagging)
330	r = lpfc_vmid_uvem(vport, vmid: vmp, ins: false);
331	else
332	r = lpfc_vmid_cmd(vport,
333	SLI_CTAS_DAPP_IDENT,
334	vmid: vmp);
335
336	/* decrement number of active vms and mark */
337	/* entry in slot as free */
338	write_lock(&vport->vmid_lock);
339	if (!r) {
340	struct lpfc_vmid *ht = vmp;
341
342	vport->cur_vmid_cnt--;
343	ht->flag = LPFC_VMID_SLOT_FREE;
344	free_percpu(pdata: ht->last_io_time);
345	ht->last_io_time = NULL;
346	hash_del(node: &ht->hnode);
347	}
348	}
349	}
350	}
351	out:
352	write_unlock(&vport->vmid_lock);
353	}
354
355	/**
356	* lpfc_check_inactive_vmid - VMID inactivity checker
357	* @phba: Pointer to hba context object.
358	*
359	* This function is called from the worker thread to determine if an entry in
360	* the VMID table can be released since there was no I/O activity seen from that
361	* particular VM for the specified time. When this happens, the entry in the
362	* table is released and also the resources on the switch cleared.
363	**/
364
365	static void lpfc_check_inactive_vmid(struct lpfc_hba *phba)
366	{
367	struct lpfc_vport *vport;
368	struct lpfc_vport **vports;
369	int i;
370
371	vports = lpfc_create_vport_work_array(phba);
372	if (!vports)
373	return;
374
375	for (i = 0; i <= phba->max_vports; i++) {
376	if ((!vports[i]) && (i == 0))
377	vport = phba->pport;
378	else
379	vport = vports[i];
380	if (!vport)
381	break;
382
383	lpfc_check_inactive_vmid_one(vport);
384	}
385	lpfc_destroy_vport_work_array(phba, vports);
386	}
387
388	/**
389	* lpfc_check_nlp_post_devloss - Check to restore ndlp refcnt after devloss
390	* @vport: Pointer to vport object.
391	* @ndlp: Pointer to remote node object.
392	*
393	* If NLP_IN_RECOV_POST_DEV_LOSS flag was set due to outstanding recovery of
394	* node during dev_loss_tmo processing, then this function restores the nlp_put
395	* kref decrement from lpfc_dev_loss_tmo_handler.
396	**/
397	void
398	lpfc_check_nlp_post_devloss(struct lpfc_vport *vport,
399	struct lpfc_nodelist *ndlp)
400	{
401	unsigned long iflags;
402
403	spin_lock_irqsave(&ndlp->lock, iflags);
404	if (ndlp->save_flags & NLP_IN_RECOV_POST_DEV_LOSS) {
405	ndlp->save_flags &= ~NLP_IN_RECOV_POST_DEV_LOSS;
406	spin_unlock_irqrestore(lock: &ndlp->lock, flags: iflags);
407	lpfc_nlp_get(ndlp);
408	lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY | LOG_NODE,
409	"8438 Devloss timeout reversed on DID x%x "
410	"refcnt %d ndlp %p flag x%x "
411	"port_state = x%x\n",
412	ndlp->nlp_DID, kref_read(&ndlp->kref), ndlp,
413	ndlp->nlp_flag, vport->port_state);
414	spin_lock_irqsave(&ndlp->lock, iflags);
415	}
416	spin_unlock_irqrestore(lock: &ndlp->lock, flags: iflags);
417	}
418
419	/**
420	* lpfc_dev_loss_tmo_handler - Remote node devloss timeout handler
421	* @ndlp: Pointer to remote node object.
422	*
423	* This function is called from the worker thread when devloss timeout timer
424	* expires. For SLI4 host, this routine shall return 1 when at lease one
425	* remote node, including this @ndlp, is still in use of FCF; otherwise, this
426	* routine shall return 0 when there is no remote node is still in use of FCF
427	* when devloss timeout happened to this @ndlp.
428	**/
429	static int
430	lpfc_dev_loss_tmo_handler(struct lpfc_nodelist *ndlp)
431	{
432	struct lpfc_vport *vport;
433	struct lpfc_hba *phba;
434	uint8_t *name;
435	int warn_on = 0;
436	int fcf_inuse = 0;
437	bool recovering = false;
438	struct fc_vport *fc_vport = NULL;
439	unsigned long iflags;
440
441	vport = ndlp->vport;
442	name = (uint8_t *)&ndlp->nlp_portname;
443	phba = vport->phba;
444
445	if (phba->sli_rev == LPFC_SLI_REV4)
446	fcf_inuse = lpfc_fcf_inuse(phba);
447
448	lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
449	"rport devlosstmo:did:x%x type:x%x id:x%x",
450	ndlp->nlp_DID, ndlp->nlp_type, ndlp->nlp_sid);
451
452	lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_NODE,
453	"3182 %s x%06x, nflag x%x xflags x%x refcnt %d\n",
454	__func__, ndlp->nlp_DID, ndlp->nlp_flag,
455	ndlp->fc4_xpt_flags, kref_read(&ndlp->kref));
456
457	/* If the driver is recovering the rport, ignore devloss. */
458	if (ndlp->nlp_state == NLP_STE_MAPPED_NODE) {
459	lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
460	"0284 Devloss timeout Ignored on "
461	"WWPN %x:%x:%x:%x:%x:%x:%x:%x "
462	"NPort x%x\n",
463	*name, *(name+1), *(name+2), *(name+3),
464	*(name+4), *(name+5), *(name+6), *(name+7),
465	ndlp->nlp_DID);
466
467	spin_lock_irqsave(&ndlp->lock, iflags);
468	ndlp->nlp_flag &= ~NLP_IN_DEV_LOSS;
469	spin_unlock_irqrestore(lock: &ndlp->lock, flags: iflags);
470	return fcf_inuse;
471	}
472
473	/* Fabric nodes are done. */
474	if (ndlp->nlp_type & NLP_FABRIC) {
475	spin_lock_irqsave(&ndlp->lock, iflags);
476
477	/* The driver has to account for a race between any fabric
478	* node that's in recovery when dev_loss_tmo expires. When this
479	* happens, the driver has to allow node recovery.
480	*/
481	switch (ndlp->nlp_DID) {
482	case Fabric_DID:
483	fc_vport = vport->fc_vport;
484	if (fc_vport) {
485	/* NPIV path. */
486	if (fc_vport->vport_state ==
487	FC_VPORT_INITIALIZING)
488	recovering = true;
489	} else {
490	/* Physical port path. */
491	if (phba->hba_flag & HBA_FLOGI_OUTSTANDING)
492	recovering = true;
493	}
494	break;
495	case Fabric_Cntl_DID:
496	if (ndlp->nlp_flag & NLP_REG_LOGIN_SEND)
497	recovering = true;
498	break;
499	case FDMI_DID:
500	fallthrough;
501	case NameServer_DID:
502	if (ndlp->nlp_state >= NLP_STE_PLOGI_ISSUE &&
503	ndlp->nlp_state <= NLP_STE_REG_LOGIN_ISSUE)
504	recovering = true;
505	break;
506	default:
507	/* Ensure the nlp_DID at least has the correct prefix.
508	* The fabric domain controller's last three nibbles
509	* vary so we handle it in the default case.
510	*/
511	if (ndlp->nlp_DID & Fabric_DID_MASK) {
512	if (ndlp->nlp_state >= NLP_STE_PLOGI_ISSUE &&
513	ndlp->nlp_state <= NLP_STE_REG_LOGIN_ISSUE)
514	recovering = true;
515	}
516	break;
517	}
518	spin_unlock_irqrestore(lock: &ndlp->lock, flags: iflags);
519
520	/* Mark an NLP_IN_RECOV_POST_DEV_LOSS flag to know if reversing
521	* the following lpfc_nlp_put is necessary after fabric node is
522	* recovered.
523	*/
524	if (recovering) {
525	lpfc_printf_vlog(vport, KERN_INFO,
526	LOG_DISCOVERY | LOG_NODE,
527	"8436 Devloss timeout marked on "
528	"DID x%x refcnt %d ndlp %p "
529	"flag x%x port_state = x%x\n",
530	ndlp->nlp_DID, kref_read(&ndlp->kref),
531	ndlp, ndlp->nlp_flag,
532	vport->port_state);
533	spin_lock_irqsave(&ndlp->lock, iflags);
534	ndlp->save_flags |= NLP_IN_RECOV_POST_DEV_LOSS;
535	spin_unlock_irqrestore(lock: &ndlp->lock, flags: iflags);
536	} else if (ndlp->nlp_state == NLP_STE_UNMAPPED_NODE) {
537	/* Fabric node fully recovered before this dev_loss_tmo
538	* queue work is processed. Thus, ignore the
539	* dev_loss_tmo event.
540	*/
541	lpfc_printf_vlog(vport, KERN_INFO,
542	LOG_DISCOVERY | LOG_NODE,
543	"8437 Devloss timeout ignored on "
544	"DID x%x refcnt %d ndlp %p "
545	"flag x%x port_state = x%x\n",
546	ndlp->nlp_DID, kref_read(&ndlp->kref),
547	ndlp, ndlp->nlp_flag,
548	vport->port_state);
549	return fcf_inuse;
550	}
551
552	spin_lock_irqsave(&ndlp->lock, iflags);
553	ndlp->nlp_flag &= ~NLP_IN_DEV_LOSS;
554	spin_unlock_irqrestore(lock: &ndlp->lock, flags: iflags);
555	lpfc_nlp_put(ndlp);
556	return fcf_inuse;
557	}
558
559	if (ndlp->nlp_sid != NLP_NO_SID) {
560	warn_on = 1;
561	lpfc_sli_abort_iocb(vport, tgt_id: ndlp->nlp_sid, lun_id: 0, abort_cmd: LPFC_CTX_TGT);
562	}
563
564	if (warn_on) {
565	lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
566	"0203 Devloss timeout on "
567	"WWPN %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x "
568	"NPort x%06x Data: x%x x%x x%x refcnt %d\n",
569	*name, *(name+1), *(name+2), *(name+3),
570	*(name+4), *(name+5), *(name+6), *(name+7),
571	ndlp->nlp_DID, ndlp->nlp_flag,
572	ndlp->nlp_state, ndlp->nlp_rpi,
573	kref_read(&ndlp->kref));
574	} else {
575	lpfc_printf_vlog(vport, KERN_INFO, LOG_TRACE_EVENT,
576	"0204 Devloss timeout on "
577	"WWPN %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x "
578	"NPort x%06x Data: x%x x%x x%x\n",
579	*name, *(name+1), *(name+2), *(name+3),
580	*(name+4), *(name+5), *(name+6), *(name+7),
581	ndlp->nlp_DID, ndlp->nlp_flag,
582	ndlp->nlp_state, ndlp->nlp_rpi);
583	}
584	spin_lock_irqsave(&ndlp->lock, iflags);
585	ndlp->nlp_flag &= ~NLP_IN_DEV_LOSS;
586	spin_unlock_irqrestore(lock: &ndlp->lock, flags: iflags);
587
588	/* If we are devloss, but we are in the process of rediscovering the
589	* ndlp, don't issue a NLP_EVT_DEVICE_RM event.
590	*/
591	if (ndlp->nlp_state >= NLP_STE_PLOGI_ISSUE &&
592	ndlp->nlp_state <= NLP_STE_PRLI_ISSUE) {
593	return fcf_inuse;
594	}
595
596	if (!(ndlp->fc4_xpt_flags & NVME_XPT_REGD))
597	lpfc_disc_state_machine(vport, ndlp, NULL, NLP_EVT_DEVICE_RM);
598
599	return fcf_inuse;
600	}
601
602	static void lpfc_check_vmid_qfpa_issue(struct lpfc_hba *phba)
603	{
604	struct lpfc_vport *vport;
605	struct lpfc_vport **vports;
606	int i;
607
608	vports = lpfc_create_vport_work_array(phba);
609	if (!vports)
610	return;
611
612	for (i = 0; i <= phba->max_vports; i++) {
613	if ((!vports[i]) && (i == 0))
614	vport = phba->pport;
615	else
616	vport = vports[i];
617	if (!vport)
618	break;
619
620	if (vport->vmid_flag & LPFC_VMID_ISSUE_QFPA) {
621	if (!lpfc_issue_els_qfpa(vport))
622	vport->vmid_flag &= ~LPFC_VMID_ISSUE_QFPA;
623	}
624	}
625	lpfc_destroy_vport_work_array(phba, vports);
626	}
627
628	/**
629	* lpfc_sli4_post_dev_loss_tmo_handler - SLI4 post devloss timeout handler
630	* @phba: Pointer to hba context object.
631	* @fcf_inuse: SLI4 FCF in-use state reported from devloss timeout handler.
632	* @nlp_did: remote node identifer with devloss timeout.
633	*
634	* This function is called from the worker thread after invoking devloss
635	* timeout handler and releasing the reference count for the ndlp with
636	* which the devloss timeout was handled for SLI4 host. For the devloss
637	* timeout of the last remote node which had been in use of FCF, when this
638	* routine is invoked, it shall be guaranteed that none of the remote are
639	* in-use of FCF. When devloss timeout to the last remote using the FCF,
640	* if the FIP engine is neither in FCF table scan process nor roundrobin
641	* failover process, the in-use FCF shall be unregistered. If the FIP
642	* engine is in FCF discovery process, the devloss timeout state shall
643	* be set for either the FCF table scan process or roundrobin failover
644	* process to unregister the in-use FCF.
645	**/
646	static void
647	lpfc_sli4_post_dev_loss_tmo_handler(struct lpfc_hba *phba, int fcf_inuse,
648	uint32_t nlp_did)
649	{
650	/* If devloss timeout happened to a remote node when FCF had no
651	* longer been in-use, do nothing.
652	*/
653	if (!fcf_inuse)
654	return;
655
656	if ((phba->hba_flag & HBA_FIP_SUPPORT) && !lpfc_fcf_inuse(phba)) {
657	spin_lock_irq(lock: &phba->hbalock);
658	if (phba->fcf.fcf_flag & FCF_DISCOVERY) {
659	if (phba->hba_flag & HBA_DEVLOSS_TMO) {
660	spin_unlock_irq(lock: &phba->hbalock);
661	return;
662	}
663	phba->hba_flag |= HBA_DEVLOSS_TMO;
664	lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
665	"2847 Last remote node (x%x) using "
666	"FCF devloss tmo\n", nlp_did);
667	}
668	if (phba->fcf.fcf_flag & FCF_REDISC_PROG) {
669	spin_unlock_irq(lock: &phba->hbalock);
670	lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
671	"2868 Devloss tmo to FCF rediscovery "
672	"in progress\n");
673	return;
674	}
675	if (!(phba->hba_flag & (FCF_TS_INPROG | FCF_RR_INPROG))) {
676	spin_unlock_irq(lock: &phba->hbalock);
677	lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
678	"2869 Devloss tmo to idle FIP engine, "
679	"unreg in-use FCF and rescan.\n");
680	/* Unregister in-use FCF and rescan */
681	lpfc_unregister_fcf_rescan(phba);
682	return;
683	}
684	spin_unlock_irq(lock: &phba->hbalock);
685	if (phba->hba_flag & FCF_TS_INPROG)
686	lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
687	"2870 FCF table scan in progress\n");
688	if (phba->hba_flag & FCF_RR_INPROG)
689	lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
690	"2871 FLOGI roundrobin FCF failover "
691	"in progress\n");
692	}
693	lpfc_unregister_unused_fcf(phba);
694	}
695
696	/**
697	* lpfc_alloc_fast_evt - Allocates data structure for posting event
698	* @phba: Pointer to hba context object.
699	*
700	* This function is called from the functions which need to post
701	* events from interrupt context. This function allocates data
702	* structure required for posting event. It also keeps track of
703	* number of events pending and prevent event storm when there are
704	* too many events.
705	**/
706	struct lpfc_fast_path_event *
707	lpfc_alloc_fast_evt(struct lpfc_hba *phba) {
708	struct lpfc_fast_path_event *ret;
709
710	/* If there are lot of fast event do not exhaust memory due to this */
711	if (atomic_read(v: &phba->fast_event_count) > LPFC_MAX_EVT_COUNT)
712	return NULL;
713
714	ret = kzalloc(size: sizeof(struct lpfc_fast_path_event),
715	GFP_ATOMIC);
716	if (ret) {
717	atomic_inc(v: &phba->fast_event_count);
718	INIT_LIST_HEAD(list: &ret->work_evt.evt_listp);
719	ret->work_evt.evt = LPFC_EVT_FASTPATH_MGMT_EVT;
720	}
721	return ret;
722	}
723
724	/**
725	* lpfc_free_fast_evt - Frees event data structure
726	* @phba: Pointer to hba context object.
727	* @evt: Event object which need to be freed.
728	*
729	* This function frees the data structure required for posting
730	* events.
731	**/
732	void
733	lpfc_free_fast_evt(struct lpfc_hba *phba,
734	struct lpfc_fast_path_event *evt) {
735
736	atomic_dec(v: &phba->fast_event_count);
737	kfree(objp: evt);
738	}
739
740	/**
741	* lpfc_send_fastpath_evt - Posts events generated from fast path
742	* @phba: Pointer to hba context object.
743	* @evtp: Event data structure.
744	*
745	* This function is called from worker thread, when the interrupt
746	* context need to post an event. This function posts the event
747	* to fc transport netlink interface.
748	**/
749	static void
750	lpfc_send_fastpath_evt(struct lpfc_hba *phba,
751	struct lpfc_work_evt *evtp)
752	{
753	unsigned long evt_category, evt_sub_category;
754	struct lpfc_fast_path_event *fast_evt_data;
755	char *evt_data;
756	uint32_t evt_data_size;
757	struct Scsi_Host *shost;
758
759	fast_evt_data = container_of(evtp, struct lpfc_fast_path_event,
760	work_evt);
761
762	evt_category = (unsigned long) fast_evt_data->un.fabric_evt.event_type;
763	evt_sub_category = (unsigned long) fast_evt_data->un.
764	fabric_evt.subcategory;
765	shost = lpfc_shost_from_vport(vport: fast_evt_data->vport);
766	if (evt_category == FC_REG_FABRIC_EVENT) {
767	if (evt_sub_category == LPFC_EVENT_FCPRDCHKERR) {
768	evt_data = (char *) &fast_evt_data->un.read_check_error;
769	evt_data_size = sizeof(fast_evt_data->un.
770	read_check_error);
771	} else if ((evt_sub_category == LPFC_EVENT_FABRIC_BUSY) ||
772	(evt_sub_category == LPFC_EVENT_PORT_BUSY)) {
773	evt_data = (char *) &fast_evt_data->un.fabric_evt;
774	evt_data_size = sizeof(fast_evt_data->un.fabric_evt);
775	} else {
776	lpfc_free_fast_evt(phba, evt: fast_evt_data);
777	return;
778	}
779	} else if (evt_category == FC_REG_SCSI_EVENT) {
780	switch (evt_sub_category) {
781	case LPFC_EVENT_QFULL:
782	case LPFC_EVENT_DEVBSY:
783	evt_data = (char *) &fast_evt_data->un.scsi_evt;
784	evt_data_size = sizeof(fast_evt_data->un.scsi_evt);
785	break;
786	case LPFC_EVENT_CHECK_COND:
787	evt_data = (char *) &fast_evt_data->un.check_cond_evt;
788	evt_data_size = sizeof(fast_evt_data->un.
789	check_cond_evt);
790	break;
791	case LPFC_EVENT_VARQUEDEPTH:
792	evt_data = (char *) &fast_evt_data->un.queue_depth_evt;
793	evt_data_size = sizeof(fast_evt_data->un.
794	queue_depth_evt);
795	break;
796	default:
797	lpfc_free_fast_evt(phba, evt: fast_evt_data);
798	return;
799	}
800	} else {
801	lpfc_free_fast_evt(phba, evt: fast_evt_data);
802	return;
803	}
804
805	if (phba->cfg_enable_fc4_type != LPFC_ENABLE_NVME)
806	fc_host_post_vendor_event(shost,
807	event_number: fc_get_event_number(),
808	data_len: evt_data_size,
809	data_buf: evt_data,
810	LPFC_NL_VENDOR_ID);
811
812	lpfc_free_fast_evt(phba, evt: fast_evt_data);
813	return;
814	}
815
816	static void
817	lpfc_work_list_done(struct lpfc_hba *phba)
818	{
819	struct lpfc_work_evt *evtp = NULL;
820	struct lpfc_nodelist *ndlp;
821	int free_evt;
822	int fcf_inuse;
823	uint32_t nlp_did;
824	bool hba_pci_err;
825
826	spin_lock_irq(lock: &phba->hbalock);
827	while (!list_empty(head: &phba->work_list)) {
828	list_remove_head((&phba->work_list), evtp, typeof(*evtp),
829	evt_listp);
830	spin_unlock_irq(lock: &phba->hbalock);
831	hba_pci_err = test_bit(HBA_PCI_ERR, &phba->bit_flags);
832	free_evt = 1;
833	switch (evtp->evt) {
834	case LPFC_EVT_ELS_RETRY:
835	ndlp = (struct lpfc_nodelist *) (evtp->evt_arg1);
836	if (!hba_pci_err) {
837	lpfc_els_retry_delay_handler(ndlp);
838	free_evt = 0; /* evt is part of ndlp */
839	}
840	/* decrement the node reference count held
841	* for this queued work
842	*/
843	lpfc_nlp_put(ndlp);
844	break;
845	case LPFC_EVT_DEV_LOSS:
846	ndlp = (struct lpfc_nodelist *)(evtp->evt_arg1);
847	fcf_inuse = lpfc_dev_loss_tmo_handler(ndlp);
848	free_evt = 0;
849	/* decrement the node reference count held for
850	* this queued work
851	*/
852	nlp_did = ndlp->nlp_DID;
853	lpfc_nlp_put(ndlp);
854	if (phba->sli_rev == LPFC_SLI_REV4)
855	lpfc_sli4_post_dev_loss_tmo_handler(phba,
856	fcf_inuse,
857	nlp_did);
858	break;
859	case LPFC_EVT_RECOVER_PORT:
860	ndlp = (struct lpfc_nodelist *)(evtp->evt_arg1);
861	if (!hba_pci_err) {
862	lpfc_sli_abts_recover_port(ndlp->vport, ndlp);
863	free_evt = 0;
864	}
865	/* decrement the node reference count held for
866	* this queued work
867	*/
868	lpfc_nlp_put(ndlp);
869	break;
870	case LPFC_EVT_ONLINE:
871	if (phba->link_state < LPFC_LINK_DOWN)
872	*(int *) (evtp->evt_arg1) = lpfc_online(phba);
873	else
874	*(int *) (evtp->evt_arg1) = 0;
875	complete((struct completion *)(evtp->evt_arg2));
876	break;
877	case LPFC_EVT_OFFLINE_PREP:
878	if (phba->link_state >= LPFC_LINK_DOWN)
879	lpfc_offline_prep(phba, LPFC_MBX_WAIT);
880	*(int *)(evtp->evt_arg1) = 0;
881	complete((struct completion *)(evtp->evt_arg2));
882	break;
883	case LPFC_EVT_OFFLINE:
884	lpfc_offline(phba);
885	lpfc_sli_brdrestart(phba);
886	*(int *)(evtp->evt_arg1) =
887	lpfc_sli_brdready(phba, HS_FFRDY | HS_MBRDY);
888	lpfc_unblock_mgmt_io(phba);
889	complete((struct completion *)(evtp->evt_arg2));
890	break;
891	case LPFC_EVT_WARM_START:
892	lpfc_offline(phba);
893	lpfc_reset_barrier(phba);
894	lpfc_sli_brdreset(phba);
895	lpfc_hba_down_post(phba);
896	*(int *)(evtp->evt_arg1) =
897	lpfc_sli_brdready(phba, HS_MBRDY);
898	lpfc_unblock_mgmt_io(phba);
899	complete((struct completion *)(evtp->evt_arg2));
900	break;
901	case LPFC_EVT_KILL:
902	lpfc_offline(phba);
903	*(int *)(evtp->evt_arg1)
904	= (phba->pport->stopped)
905	? 0 : lpfc_sli_brdkill(phba);
906	lpfc_unblock_mgmt_io(phba);
907	complete((struct completion *)(evtp->evt_arg2));
908	break;
909	case LPFC_EVT_FASTPATH_MGMT_EVT:
910	lpfc_send_fastpath_evt(phba, evtp);
911	free_evt = 0;
912	break;
913	case LPFC_EVT_RESET_HBA:
914	if (!(phba->pport->load_flag & FC_UNLOADING))
915	lpfc_reset_hba(phba);
916	break;
917	}
918	if (free_evt)
919	kfree(objp: evtp);
920	spin_lock_irq(lock: &phba->hbalock);
921	}
922	spin_unlock_irq(lock: &phba->hbalock);
923
924	}
925
926	static void
927	lpfc_work_done(struct lpfc_hba *phba)
928	{
929	struct lpfc_sli_ring *pring;
930	uint32_t ha_copy, status, control, work_port_events;
931	struct lpfc_vport **vports;
932	struct lpfc_vport *vport;
933	int i;
934	bool hba_pci_err;
935
936	hba_pci_err = test_bit(HBA_PCI_ERR, &phba->bit_flags);
937	spin_lock_irq(lock: &phba->hbalock);
938	ha_copy = phba->work_ha;
939	phba->work_ha = 0;
940	spin_unlock_irq(lock: &phba->hbalock);
941	if (hba_pci_err)
942	ha_copy = 0;
943
944	/* First, try to post the next mailbox command to SLI4 device */
945	if (phba->pci_dev_grp == LPFC_PCI_DEV_OC && !hba_pci_err)
946	lpfc_sli4_post_async_mbox(phba);
947
948	if (ha_copy & HA_ERATT) {
949	/* Handle the error attention event */
950	lpfc_handle_eratt(phba);
951
952	if (phba->fw_dump_cmpl) {
953	complete(phba->fw_dump_cmpl);
954	phba->fw_dump_cmpl = NULL;
955	}
956	}
957
958	if (ha_copy & HA_MBATT)
959	lpfc_sli_handle_mb_event(phba);
960
961	if (ha_copy & HA_LATT)
962	lpfc_handle_latt(phba);
963
964	/* Handle VMID Events */
965	if (lpfc_is_vmid_enabled(phba) && !hba_pci_err) {
966	if (phba->pport->work_port_events &
967	WORKER_CHECK_VMID_ISSUE_QFPA) {
968	lpfc_check_vmid_qfpa_issue(phba);
969	phba->pport->work_port_events &=
970	~WORKER_CHECK_VMID_ISSUE_QFPA;
971	}
972	if (phba->pport->work_port_events &
973	WORKER_CHECK_INACTIVE_VMID) {
974	lpfc_check_inactive_vmid(phba);
975	phba->pport->work_port_events &=
976	~WORKER_CHECK_INACTIVE_VMID;
977	}
978	}
979
980	/* Process SLI4 events */
981	if (phba->pci_dev_grp == LPFC_PCI_DEV_OC) {
982	if (phba->hba_flag & HBA_RRQ_ACTIVE)
983	lpfc_handle_rrq_active(phba);
984	if (phba->hba_flag & ELS_XRI_ABORT_EVENT)
985	lpfc_sli4_els_xri_abort_event_proc(phba);
986	if (phba->hba_flag & ASYNC_EVENT)
987	lpfc_sli4_async_event_proc(phba);
988	if (phba->hba_flag & HBA_POST_RECEIVE_BUFFER) {
989	spin_lock_irq(lock: &phba->hbalock);
990	phba->hba_flag &= ~HBA_POST_RECEIVE_BUFFER;
991	spin_unlock_irq(lock: &phba->hbalock);
992	lpfc_sli_hbqbuf_add_hbqs(phba, LPFC_ELS_HBQ);
993	}
994	if (phba->fcf.fcf_flag & FCF_REDISC_EVT)
995	lpfc_sli4_fcf_redisc_event_proc(phba);
996	}
997
998	vports = lpfc_create_vport_work_array(phba);
999	if (vports != NULL)
1000	for (i = 0; i <= phba->max_vports; i++) {
1001	/*
1002	* We could have no vports in array if unloading, so if
1003	* this happens then just use the pport
1004	*/
1005	if (vports[i] == NULL && i == 0)
1006	vport = phba->pport;
1007	else
1008	vport = vports[i];
1009	if (vport == NULL)
1010	break;
1011	spin_lock_irq(lock: &vport->work_port_lock);
1012	work_port_events = vport->work_port_events;
1013	vport->work_port_events &= ~work_port_events;
1014	spin_unlock_irq(lock: &vport->work_port_lock);
1015	if (hba_pci_err)
1016	continue;
1017	if (work_port_events & WORKER_DISC_TMO)
1018	lpfc_disc_timeout_handler(vport);
1019	if (work_port_events & WORKER_ELS_TMO)
1020	lpfc_els_timeout_handler(vport);
1021	if (work_port_events & WORKER_HB_TMO)
1022	lpfc_hb_timeout_handler(phba);
1023	if (work_port_events & WORKER_MBOX_TMO)
1024	lpfc_mbox_timeout_handler(phba);
1025	if (work_port_events & WORKER_FABRIC_BLOCK_TMO)
1026	lpfc_unblock_fabric_iocbs(phba);
1027	if (work_port_events & WORKER_RAMP_DOWN_QUEUE)
1028	lpfc_ramp_down_queue_handler(phba);
1029	if (work_port_events & WORKER_DELAYED_DISC_TMO)
1030	lpfc_delayed_disc_timeout_handler(vport);
1031	}
1032	lpfc_destroy_vport_work_array(phba, vports);
1033
1034	pring = lpfc_phba_elsring(phba);
1035	status = (ha_copy & (HA_RXMASK << (4*LPFC_ELS_RING)));
1036	status >>= (4*LPFC_ELS_RING);
1037	if (pring && (status & HA_RXMASK ||
1038	pring->flag & LPFC_DEFERRED_RING_EVENT ||
1039	phba->hba_flag & HBA_SP_QUEUE_EVT)) {
1040	if (pring->flag & LPFC_STOP_IOCB_EVENT) {
1041	pring->flag |= LPFC_DEFERRED_RING_EVENT;
1042	/* Preserve legacy behavior. */
1043	if (!(phba->hba_flag & HBA_SP_QUEUE_EVT))
1044	set_bit(LPFC_DATA_READY, addr: &phba->data_flags);
1045	} else {
1046	/* Driver could have abort request completed in queue
1047	* when link goes down. Allow for this transition.
1048	*/
1049	if (phba->link_state >= LPFC_LINK_DOWN ||
1050	phba->link_flag & LS_MDS_LOOPBACK) {
1051	pring->flag &= ~LPFC_DEFERRED_RING_EVENT;
1052	lpfc_sli_handle_slow_ring_event(phba, pring,
1053	(status &
1054	HA_RXMASK));
1055	}
1056	}
1057	if (phba->sli_rev == LPFC_SLI_REV4)
1058	lpfc_drain_txq(phba);
1059	/*
1060	* Turn on Ring interrupts
1061	*/
1062	if (phba->sli_rev <= LPFC_SLI_REV3) {
1063	spin_lock_irq(lock: &phba->hbalock);
1064	control = readl(addr: phba->HCregaddr);
1065	if (!(control & (HC_R0INT_ENA << LPFC_ELS_RING))) {
1066	lpfc_debugfs_slow_ring_trc(phba,
1067	"WRK Enable ring: cntl:x%x hacopy:x%x",
1068	control, ha_copy, 0);
1069
1070	control |= (HC_R0INT_ENA << LPFC_ELS_RING);
1071	writel(val: control, addr: phba->HCregaddr);
1072	readl(addr: phba->HCregaddr); /* flush */
1073	} else {
1074	lpfc_debugfs_slow_ring_trc(phba,
1075	"WRK Ring ok: cntl:x%x hacopy:x%x",
1076	control, ha_copy, 0);
1077	}
1078	spin_unlock_irq(lock: &phba->hbalock);
1079	}
1080	}
1081	lpfc_work_list_done(phba);
1082	}
1083
1084	int
1085	lpfc_do_work(void *p)
1086	{
1087	struct lpfc_hba *phba = p;
1088	int rc;
1089
1090	set_user_nice(current, MIN_NICE);
1091	current->flags |= PF_NOFREEZE;
1092	phba->data_flags = 0;
1093
1094	while (!kthread_should_stop()) {
1095	/* wait and check worker queue activities */
1096	rc = wait_event_interruptible(phba->work_waitq,
1097	(test_and_clear_bit(LPFC_DATA_READY,
1098	&phba->data_flags)
1099	|| kthread_should_stop()));
1100	/* Signal wakeup shall terminate the worker thread */
1101	if (rc) {
1102	lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
1103	"0433 Wakeup on signal: rc=x%x\n", rc);
1104	break;
1105	}
1106
1107	/* Attend pending lpfc data processing */
1108	lpfc_work_done(phba);
1109	}
1110	phba->worker_thread = NULL;
1111	lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
1112	"0432 Worker thread stopped.\n");
1113	return 0;
1114	}
1115
1116	/*
1117	* This is only called to handle FC worker events. Since this a rare
1118	* occurrence, we allocate a struct lpfc_work_evt structure here instead of
1119	* embedding it in the IOCB.
1120	*/
1121	int
1122	lpfc_workq_post_event(struct lpfc_hba *phba, void *arg1, void *arg2,
1123	uint32_t evt)
1124	{
1125	struct lpfc_work_evt *evtp;
1126	unsigned long flags;
1127
1128	/*
1129	* All Mailbox completions and LPFC_ELS_RING rcv ring IOCB events will
1130	* be queued to worker thread for processing
1131	*/
1132	evtp = kmalloc(size: sizeof(struct lpfc_work_evt), GFP_ATOMIC);
1133	if (!evtp)
1134	return 0;
1135
1136	evtp->evt_arg1 = arg1;
1137	evtp->evt_arg2 = arg2;
1138	evtp->evt = evt;
1139
1140	spin_lock_irqsave(&phba->hbalock, flags);
1141	list_add_tail(new: &evtp->evt_listp, head: &phba->work_list);
1142	spin_unlock_irqrestore(lock: &phba->hbalock, flags);
1143
1144	lpfc_worker_wake_up(phba);
1145
1146	return 1;
1147	}
1148
1149	void
1150	lpfc_cleanup_rpis(struct lpfc_vport *vport, int remove)
1151	{
1152	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1153	struct lpfc_hba *phba = vport->phba;
1154	struct lpfc_nodelist *ndlp, *next_ndlp;
1155
1156	list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) {
1157	if ((phba->sli3_options & LPFC_SLI3_VPORT_TEARDOWN) ||
1158	((vport->port_type == LPFC_NPIV_PORT) &&
1159	((ndlp->nlp_DID == NameServer_DID) ||
1160	(ndlp->nlp_DID == FDMI_DID) ||
1161	(ndlp->nlp_DID == Fabric_Cntl_DID))))
1162	lpfc_unreg_rpi(vport, ndlp);
1163
1164	/* Leave Fabric nodes alone on link down */
1165	if ((phba->sli_rev < LPFC_SLI_REV4) &&
1166	(!remove && ndlp->nlp_type & NLP_FABRIC))
1167	continue;
1168
1169	/* Notify transport of connectivity loss to trigger cleanup. */
1170	if (phba->nvmet_support &&
1171	ndlp->nlp_state == NLP_STE_UNMAPPED_NODE)
1172	lpfc_nvmet_invalidate_host(phba, ndlp);
1173
1174	lpfc_disc_state_machine(vport, ndlp, NULL,
1175	remove
1176	? NLP_EVT_DEVICE_RM
1177	: NLP_EVT_DEVICE_RECOVERY);
1178	}
1179	if (phba->sli3_options & LPFC_SLI3_VPORT_TEARDOWN) {
1180	if (phba->sli_rev == LPFC_SLI_REV4)
1181	lpfc_sli4_unreg_all_rpis(vport);
1182	lpfc_mbx_unreg_vpi(vport);
1183	spin_lock_irq(lock: shost->host_lock);
1184	vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
1185	spin_unlock_irq(lock: shost->host_lock);
1186	}
1187	}
1188
1189	void
1190	lpfc_port_link_failure(struct lpfc_vport *vport)
1191	{
1192	lpfc_vport_set_state(vport, new_state: FC_VPORT_LINKDOWN);
1193
1194	/* Cleanup any outstanding received buffers */
1195	lpfc_cleanup_rcv_buffers(vport);
1196
1197	/* Cleanup any outstanding RSCN activity */
1198	lpfc_els_flush_rscn(vport);
1199
1200	/* Cleanup any outstanding ELS commands */
1201	lpfc_els_flush_cmd(vport);
1202
1203	lpfc_cleanup_rpis(vport, remove: 0);
1204
1205	/* Turn off discovery timer if its running */
1206	lpfc_can_disctmo(vport);
1207	}
1208
1209	void
1210	lpfc_linkdown_port(struct lpfc_vport *vport)
1211	{
1212	struct lpfc_hba *phba = vport->phba;
1213	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1214
1215	if (vport->cfg_enable_fc4_type != LPFC_ENABLE_NVME)
1216	fc_host_post_event(shost, event_number: fc_get_event_number(),
1217	event_code: FCH_EVT_LINKDOWN, event_data: 0);
1218
1219	lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
1220	"Link Down: state:x%x rtry:x%x flg:x%x",
1221	vport->port_state, vport->fc_ns_retry, vport->fc_flag);
1222
1223	lpfc_port_link_failure(vport);
1224
1225	/* Stop delayed Nport discovery */
1226	spin_lock_irq(lock: shost->host_lock);
1227	vport->fc_flag &= ~FC_DISC_DELAYED;
1228	spin_unlock_irq(lock: shost->host_lock);
1229	del_timer_sync(timer: &vport->delayed_disc_tmo);
1230
1231	if (phba->sli_rev == LPFC_SLI_REV4 &&
1232	vport->port_type == LPFC_PHYSICAL_PORT &&
1233	phba->sli4_hba.fawwpn_flag & LPFC_FAWWPN_CONFIG) {
1234	/* Assume success on link up */
1235	phba->sli4_hba.fawwpn_flag |= LPFC_FAWWPN_FABRIC;
1236	}
1237	}
1238
1239	int
1240	lpfc_linkdown(struct lpfc_hba *phba)
1241	{
1242	struct lpfc_vport *vport = phba->pport;
1243	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1244	struct lpfc_vport **vports;
1245	LPFC_MBOXQ_t *mb;
1246	int i;
1247	int offline;
1248
1249	if (phba->link_state == LPFC_LINK_DOWN)
1250	return 0;
1251
1252	/* Block all SCSI stack I/Os */
1253	lpfc_scsi_dev_block(phba);
1254	offline = pci_channel_offline(pdev: phba->pcidev);
1255
1256	phba->defer_flogi_acc_flag = false;
1257
1258	/* Clear external loopback plug detected flag */
1259	phba->link_flag &= ~LS_EXTERNAL_LOOPBACK;
1260
1261	spin_lock_irq(lock: &phba->hbalock);
1262	phba->fcf.fcf_flag &= ~(FCF_AVAILABLE | FCF_SCAN_DONE);
1263	spin_unlock_irq(lock: &phba->hbalock);
1264	if (phba->link_state > LPFC_LINK_DOWN) {
1265	phba->link_state = LPFC_LINK_DOWN;
1266	if (phba->sli4_hba.conf_trunk) {
1267	phba->trunk_link.link0.state = 0;
1268	phba->trunk_link.link1.state = 0;
1269	phba->trunk_link.link2.state = 0;
1270	phba->trunk_link.link3.state = 0;
1271	phba->trunk_link.phy_lnk_speed =
1272	LPFC_LINK_SPEED_UNKNOWN;
1273	phba->sli4_hba.link_state.logical_speed =
1274	LPFC_LINK_SPEED_UNKNOWN;
1275	}
1276	spin_lock_irq(lock: shost->host_lock);
1277	phba->pport->fc_flag &= ~FC_LBIT;
1278	spin_unlock_irq(lock: shost->host_lock);
1279	}
1280	vports = lpfc_create_vport_work_array(phba);
1281	if (vports != NULL) {
1282	for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
1283	/* Issue a LINK DOWN event to all nodes */
1284	lpfc_linkdown_port(vport: vports[i]);
1285
1286	vports[i]->fc_myDID = 0;
1287
1288	if ((vport->cfg_enable_fc4_type == LPFC_ENABLE_BOTH) ||
1289	(vport->cfg_enable_fc4_type == LPFC_ENABLE_NVME)) {
1290	if (phba->nvmet_support)
1291	lpfc_nvmet_update_targetport(phba);
1292	else
1293	lpfc_nvme_update_localport(vport: vports[i]);
1294	}
1295	}
1296	}
1297	lpfc_destroy_vport_work_array(phba, vports);
1298
1299	/* Clean up any SLI3 firmware default rpi's */
1300	if (phba->sli_rev > LPFC_SLI_REV3 || offline)
1301	goto skip_unreg_did;
1302
1303	mb = mempool_alloc(pool: phba->mbox_mem_pool, GFP_KERNEL);
1304	if (mb) {
1305	lpfc_unreg_did(phba, 0xffff, LPFC_UNREG_ALL_DFLT_RPIS, mb);
1306	mb->vport = vport;
1307	mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
1308	if (lpfc_sli_issue_mbox(phba, mb, MBX_NOWAIT)
1309	== MBX_NOT_FINISHED) {
1310	mempool_free(element: mb, pool: phba->mbox_mem_pool);
1311	}
1312	}
1313
1314	skip_unreg_did:
1315	/* Setup myDID for link up if we are in pt2pt mode */
1316	if (phba->pport->fc_flag & FC_PT2PT) {
1317	mb = mempool_alloc(pool: phba->mbox_mem_pool, GFP_KERNEL);
1318	if (mb) {
1319	lpfc_config_link(phba, mb);
1320	mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
1321	mb->vport = vport;
1322	if (lpfc_sli_issue_mbox(phba, mb, MBX_NOWAIT)
1323	== MBX_NOT_FINISHED) {
1324	mempool_free(element: mb, pool: phba->mbox_mem_pool);
1325	}
1326	}
1327	spin_lock_irq(lock: shost->host_lock);
1328	phba->pport->fc_flag &= ~(FC_PT2PT | FC_PT2PT_PLOGI);
1329	phba->pport->rcv_flogi_cnt = 0;
1330	spin_unlock_irq(lock: shost->host_lock);
1331	}
1332	return 0;
1333	}
1334
1335	static void
1336	lpfc_linkup_cleanup_nodes(struct lpfc_vport *vport)
1337	{
1338	struct lpfc_nodelist *ndlp;
1339
1340	list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
1341	ndlp->nlp_fc4_type &= ~(NLP_FC4_FCP | NLP_FC4_NVME);
1342
1343	if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
1344	continue;
1345	if (ndlp->nlp_type & NLP_FABRIC) {
1346	/* On Linkup its safe to clean up the ndlp
1347	* from Fabric connections.
1348	*/
1349	if (ndlp->nlp_DID != Fabric_DID)
1350	lpfc_unreg_rpi(vport, ndlp);
1351	lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1352	} else if (!(ndlp->nlp_flag & NLP_NPR_ADISC)) {
1353	/* Fail outstanding IO now since device is
1354	* marked for PLOGI.
1355	*/
1356	lpfc_unreg_rpi(vport, ndlp);
1357	}
1358	}
1359	}
1360
1361	static void
1362	lpfc_linkup_port(struct lpfc_vport *vport)
1363	{
1364	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1365	struct lpfc_hba *phba = vport->phba;
1366
1367	if ((vport->load_flag & FC_UNLOADING) != 0)
1368	return;
1369
1370	lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
1371	"Link Up: top:x%x speed:x%x flg:x%x",
1372	phba->fc_topology, phba->fc_linkspeed, phba->link_flag);
1373
1374	/* If NPIV is not enabled, only bring the physical port up */
1375	if (!(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
1376	(vport != phba->pport))
1377	return;
1378
1379	if (vport->cfg_enable_fc4_type != LPFC_ENABLE_NVME)
1380	fc_host_post_event(shost, event_number: fc_get_event_number(),
1381	event_code: FCH_EVT_LINKUP, event_data: 0);
1382
1383	spin_lock_irq(lock: shost->host_lock);
1384	if (phba->defer_flogi_acc_flag)
1385	vport->fc_flag &= ~(FC_ABORT_DISCOVERY | FC_RSCN_MODE |
1386	FC_NLP_MORE | FC_RSCN_DISCOVERY);
1387	else
1388	vport->fc_flag &= ~(FC_PT2PT | FC_PT2PT_PLOGI |
1389	FC_ABORT_DISCOVERY | FC_RSCN_MODE |
1390	FC_NLP_MORE | FC_RSCN_DISCOVERY);
1391	vport->fc_flag |= FC_NDISC_ACTIVE;
1392	vport->fc_ns_retry = 0;
1393	spin_unlock_irq(lock: shost->host_lock);
1394	lpfc_setup_fdmi_mask(vport);
1395
1396	lpfc_linkup_cleanup_nodes(vport);
1397	}
1398
1399	static int
1400	lpfc_linkup(struct lpfc_hba *phba)
1401	{
1402	struct lpfc_vport **vports;
1403	int i;
1404	struct Scsi_Host *shost = lpfc_shost_from_vport(vport: phba->pport);
1405
1406	phba->link_state = LPFC_LINK_UP;
1407
1408	/* Unblock fabric iocbs if they are blocked */
1409	clear_bit(nr: FABRIC_COMANDS_BLOCKED, addr: &phba->bit_flags);
1410	del_timer_sync(timer: &phba->fabric_block_timer);
1411
1412	vports = lpfc_create_vport_work_array(phba);
1413	if (vports != NULL)
1414	for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++)
1415	lpfc_linkup_port(vport: vports[i]);
1416	lpfc_destroy_vport_work_array(phba, vports);
1417
1418	/* Clear the pport flogi counter in case the link down was
1419	* absorbed without an ACQE. No lock here - in worker thread
1420	* and discovery is synchronized.
1421	*/
1422	spin_lock_irq(lock: shost->host_lock);
1423	phba->pport->rcv_flogi_cnt = 0;
1424	spin_unlock_irq(lock: shost->host_lock);
1425
1426	/* reinitialize initial HBA flag */
1427	phba->hba_flag &= ~(HBA_FLOGI_ISSUED | HBA_RHBA_CMPL);
1428
1429	return 0;
1430	}
1431
1432	/*
1433	* This routine handles processing a CLEAR_LA mailbox
1434	* command upon completion. It is setup in the LPFC_MBOXQ
1435	* as the completion routine when the command is
1436	* handed off to the SLI layer. SLI3 only.
1437	*/
1438	static void
1439	lpfc_mbx_cmpl_clear_la(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
1440	{
1441	struct lpfc_vport *vport = pmb->vport;
1442	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1443	struct lpfc_sli *psli = &phba->sli;
1444	MAILBOX_t *mb = &pmb->u.mb;
1445	uint32_t control;
1446
1447	/* Since we don't do discovery right now, turn these off here */
1448	psli->sli3_ring[LPFC_EXTRA_RING].flag &= ~LPFC_STOP_IOCB_EVENT;
1449	psli->sli3_ring[LPFC_FCP_RING].flag &= ~LPFC_STOP_IOCB_EVENT;
1450
1451	/* Check for error */
1452	if ((mb->mbxStatus) && (mb->mbxStatus != 0x1601)) {
1453	/* CLEAR_LA mbox error <mbxStatus> state <hba_state> */
1454	lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
1455	"0320 CLEAR_LA mbxStatus error x%x hba "
1456	"state x%x\n",
1457	mb->mbxStatus, vport->port_state);
1458	phba->link_state = LPFC_HBA_ERROR;
1459	goto out;
1460	}
1461
1462	if (vport->port_type == LPFC_PHYSICAL_PORT)
1463	phba->link_state = LPFC_HBA_READY;
1464
1465	spin_lock_irq(lock: &phba->hbalock);
1466	psli->sli_flag |= LPFC_PROCESS_LA;
1467	control = readl(addr: phba->HCregaddr);
1468	control |= HC_LAINT_ENA;
1469	writel(val: control, addr: phba->HCregaddr);
1470	readl(addr: phba->HCregaddr); /* flush */
1471	spin_unlock_irq(lock: &phba->hbalock);
1472	mempool_free(element: pmb, pool: phba->mbox_mem_pool);
1473	return;
1474
1475	out:
1476	/* Device Discovery completes */
1477	lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
1478	"0225 Device Discovery completes\n");
1479	mempool_free(element: pmb, pool: phba->mbox_mem_pool);
1480
1481	spin_lock_irq(lock: shost->host_lock);
1482	vport->fc_flag &= ~FC_ABORT_DISCOVERY;
1483	spin_unlock_irq(lock: shost->host_lock);
1484
1485	lpfc_can_disctmo(vport);
1486
1487	/* turn on Link Attention interrupts */
1488
1489	spin_lock_irq(lock: &phba->hbalock);
1490	psli->sli_flag |= LPFC_PROCESS_LA;
1491	control = readl(addr: phba->HCregaddr);
1492	control |= HC_LAINT_ENA;
1493	writel(val: control, addr: phba->HCregaddr);
1494	readl(addr: phba->HCregaddr); /* flush */
1495	spin_unlock_irq(lock: &phba->hbalock);
1496
1497	return;
1498	}
1499
1500	void
1501	lpfc_mbx_cmpl_local_config_link(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
1502	{
1503	struct lpfc_vport *vport = pmb->vport;
1504	LPFC_MBOXQ_t *sparam_mb;
1505	u16 status = pmb->u.mb.mbxStatus;
1506	int rc;
1507
1508	mempool_free(element: pmb, pool: phba->mbox_mem_pool);
1509
1510	if (status)
1511	goto out;
1512
1513	/* don't perform discovery for SLI4 loopback diagnostic test */
1514	if ((phba->sli_rev == LPFC_SLI_REV4) &&
1515	!(phba->hba_flag & HBA_FCOE_MODE) &&
1516	(phba->link_flag & LS_LOOPBACK_MODE))
1517	return;
1518
1519	if (phba->fc_topology == LPFC_TOPOLOGY_LOOP &&
1520	vport->fc_flag & FC_PUBLIC_LOOP &&
1521	!(vport->fc_flag & FC_LBIT)) {
1522	/* Need to wait for FAN - use discovery timer
1523	* for timeout. port_state is identically
1524	* LPFC_LOCAL_CFG_LINK while waiting for FAN
1525	*/
1526	lpfc_set_disctmo(vport);
1527	return;
1528	}
1529
1530	/* Start discovery by sending a FLOGI. port_state is identically
1531	* LPFC_FLOGI while waiting for FLOGI cmpl.
1532	*/
1533	if (vport->port_state != LPFC_FLOGI) {
1534	/* Issue MBX_READ_SPARAM to update CSPs before FLOGI if
1535	* bb-credit recovery is in place.
1536	*/
1537	if (phba->bbcredit_support && phba->cfg_enable_bbcr &&
1538	!(phba->link_flag & LS_LOOPBACK_MODE)) {
1539	sparam_mb = mempool_alloc(pool: phba->mbox_mem_pool,
1540	GFP_KERNEL);
1541	if (!sparam_mb)
1542	goto sparam_out;
1543
1544	rc = lpfc_read_sparam(phba, sparam_mb, 0);
1545	if (rc) {
1546	mempool_free(element: sparam_mb, pool: phba->mbox_mem_pool);
1547	goto sparam_out;
1548	}
1549	sparam_mb->vport = vport;
1550	sparam_mb->mbox_cmpl = lpfc_mbx_cmpl_read_sparam;
1551	rc = lpfc_sli_issue_mbox(phba, sparam_mb, MBX_NOWAIT);
1552	if (rc == MBX_NOT_FINISHED) {
1553	lpfc_mbox_rsrc_cleanup(phba, mbox: sparam_mb,
1554	locked: MBOX_THD_UNLOCKED);
1555	goto sparam_out;
1556	}
1557
1558	phba->hba_flag |= HBA_DEFER_FLOGI;
1559	} else {
1560	lpfc_initial_flogi(vport);
1561	}
1562	} else {
1563	if (vport->fc_flag & FC_PT2PT)
1564	lpfc_disc_start(vport);
1565	}
1566	return;
1567
1568	out:
1569	lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
1570	"0306 CONFIG_LINK mbxStatus error x%x HBA state x%x\n",
1571	status, vport->port_state);
1572
1573	sparam_out:
1574	lpfc_linkdown(phba);
1575
1576	lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
1577	"0200 CONFIG_LINK bad hba state x%x\n",
1578	vport->port_state);
1579
1580	lpfc_issue_clear_la(phba, vport);
1581	return;
1582	}
1583
1584	/**
1585	* lpfc_sli4_clear_fcf_rr_bmask
1586	* @phba: pointer to the struct lpfc_hba for this port.
1587	* This fucnction resets the round robin bit mask and clears the
1588	* fcf priority list. The list deletions are done while holding the
1589	* hbalock. The ON_LIST flag and the FLOGI_FAILED flags are cleared
1590	* from the lpfc_fcf_pri record.
1591	**/
1592	void
1593	lpfc_sli4_clear_fcf_rr_bmask(struct lpfc_hba *phba)
1594	{
1595	struct lpfc_fcf_pri *fcf_pri;
1596	struct lpfc_fcf_pri *next_fcf_pri;
1597	memset(phba->fcf.fcf_rr_bmask, 0, sizeof(*phba->fcf.fcf_rr_bmask));
1598	spin_lock_irq(lock: &phba->hbalock);
1599	list_for_each_entry_safe(fcf_pri, next_fcf_pri,
1600	&phba->fcf.fcf_pri_list, list) {
1601	list_del_init(entry: &fcf_pri->list);
1602	fcf_pri->fcf_rec.flag = 0;
1603	}
1604	spin_unlock_irq(lock: &phba->hbalock);
1605	}
1606	static void
1607	lpfc_mbx_cmpl_reg_fcfi(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
1608	{
1609	struct lpfc_vport *vport = mboxq->vport;
1610
1611	if (mboxq->u.mb.mbxStatus) {
1612	lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
1613	"2017 REG_FCFI mbxStatus error x%x "
1614	"HBA state x%x\n", mboxq->u.mb.mbxStatus,
1615	vport->port_state);
1616	goto fail_out;
1617	}
1618
1619	/* Start FCoE discovery by sending a FLOGI. */
1620	phba->fcf.fcfi = bf_get(lpfc_reg_fcfi_fcfi, &mboxq->u.mqe.un.reg_fcfi);
1621	/* Set the FCFI registered flag */
1622	spin_lock_irq(lock: &phba->hbalock);
1623	phba->fcf.fcf_flag |= FCF_REGISTERED;
1624	spin_unlock_irq(lock: &phba->hbalock);
1625
1626	/* If there is a pending FCoE event, restart FCF table scan. */
1627	if ((!(phba->hba_flag & FCF_RR_INPROG)) &&
1628	lpfc_check_pending_fcoe_event(phba, LPFC_UNREG_FCF))
1629	goto fail_out;
1630
1631	/* Mark successful completion of FCF table scan */
1632	spin_lock_irq(lock: &phba->hbalock);
1633	phba->fcf.fcf_flag |= (FCF_SCAN_DONE | FCF_IN_USE);
1634	phba->hba_flag &= ~FCF_TS_INPROG;
1635	if (vport->port_state != LPFC_FLOGI) {
1636	phba->hba_flag |= FCF_RR_INPROG;
1637	spin_unlock_irq(lock: &phba->hbalock);
1638	lpfc_issue_init_vfi(vport);
1639	goto out;
1640	}
1641	spin_unlock_irq(lock: &phba->hbalock);
1642	goto out;
1643
1644	fail_out:
1645	spin_lock_irq(lock: &phba->hbalock);
1646	phba->hba_flag &= ~FCF_RR_INPROG;
1647	spin_unlock_irq(lock: &phba->hbalock);
1648	out:
1649	mempool_free(element: mboxq, pool: phba->mbox_mem_pool);
1650	}
1651
1652	/**
1653	* lpfc_fab_name_match - Check if the fcf fabric name match.
1654	* @fab_name: pointer to fabric name.
1655	* @new_fcf_record: pointer to fcf record.
1656	*
1657	* This routine compare the fcf record's fabric name with provided
1658	* fabric name. If the fabric name are identical this function
1659	* returns 1 else return 0.
1660	**/
1661	static uint32_t
1662	lpfc_fab_name_match(uint8_t *fab_name, struct fcf_record *new_fcf_record)
1663	{
1664	if (fab_name[0] != bf_get(lpfc_fcf_record_fab_name_0, new_fcf_record))
1665	return 0;
1666	if (fab_name[1] != bf_get(lpfc_fcf_record_fab_name_1, new_fcf_record))
1667	return 0;
1668	if (fab_name[2] != bf_get(lpfc_fcf_record_fab_name_2, new_fcf_record))
1669	return 0;
1670	if (fab_name[3] != bf_get(lpfc_fcf_record_fab_name_3, new_fcf_record))
1671	return 0;
1672	if (fab_name[4] != bf_get(lpfc_fcf_record_fab_name_4, new_fcf_record))
1673	return 0;
1674	if (fab_name[5] != bf_get(lpfc_fcf_record_fab_name_5, new_fcf_record))
1675	return 0;
1676	if (fab_name[6] != bf_get(lpfc_fcf_record_fab_name_6, new_fcf_record))
1677	return 0;
1678	if (fab_name[7] != bf_get(lpfc_fcf_record_fab_name_7, new_fcf_record))
1679	return 0;
1680	return 1;
1681	}
1682
1683	/**
1684	* lpfc_sw_name_match - Check if the fcf switch name match.
1685	* @sw_name: pointer to switch name.
1686	* @new_fcf_record: pointer to fcf record.
1687	*
1688	* This routine compare the fcf record's switch name with provided
1689	* switch name. If the switch name are identical this function
1690	* returns 1 else return 0.
1691	**/
1692	static uint32_t
1693	lpfc_sw_name_match(uint8_t *sw_name, struct fcf_record *new_fcf_record)
1694	{
1695	if (sw_name[0] != bf_get(lpfc_fcf_record_switch_name_0, new_fcf_record))
1696	return 0;
1697	if (sw_name[1] != bf_get(lpfc_fcf_record_switch_name_1, new_fcf_record))
1698	return 0;
1699	if (sw_name[2] != bf_get(lpfc_fcf_record_switch_name_2, new_fcf_record))
1700	return 0;
1701	if (sw_name[3] != bf_get(lpfc_fcf_record_switch_name_3, new_fcf_record))
1702	return 0;
1703	if (sw_name[4] != bf_get(lpfc_fcf_record_switch_name_4, new_fcf_record))
1704	return 0;
1705	if (sw_name[5] != bf_get(lpfc_fcf_record_switch_name_5, new_fcf_record))
1706	return 0;
1707	if (sw_name[6] != bf_get(lpfc_fcf_record_switch_name_6, new_fcf_record))
1708	return 0;
1709	if (sw_name[7] != bf_get(lpfc_fcf_record_switch_name_7, new_fcf_record))
1710	return 0;
1711	return 1;
1712	}
1713
1714	/**
1715	* lpfc_mac_addr_match - Check if the fcf mac address match.
1716	* @mac_addr: pointer to mac address.
1717	* @new_fcf_record: pointer to fcf record.
1718	*
1719	* This routine compare the fcf record's mac address with HBA's
1720	* FCF mac address. If the mac addresses are identical this function
1721	* returns 1 else return 0.
1722	**/
1723	static uint32_t
1724	lpfc_mac_addr_match(uint8_t *mac_addr, struct fcf_record *new_fcf_record)
1725	{
1726	if (mac_addr[0] != bf_get(lpfc_fcf_record_mac_0, new_fcf_record))
1727	return 0;
1728	if (mac_addr[1] != bf_get(lpfc_fcf_record_mac_1, new_fcf_record))
1729	return 0;
1730	if (mac_addr[2] != bf_get(lpfc_fcf_record_mac_2, new_fcf_record))
1731	return 0;
1732	if (mac_addr[3] != bf_get(lpfc_fcf_record_mac_3, new_fcf_record))
1733	return 0;
1734	if (mac_addr[4] != bf_get(lpfc_fcf_record_mac_4, new_fcf_record))
1735	return 0;
1736	if (mac_addr[5] != bf_get(lpfc_fcf_record_mac_5, new_fcf_record))
1737	return 0;
1738	return 1;
1739	}
1740
1741	static bool
1742	lpfc_vlan_id_match(uint16_t curr_vlan_id, uint16_t new_vlan_id)
1743	{
1744	return (curr_vlan_id == new_vlan_id);
1745	}
1746
1747	/**
1748	* __lpfc_update_fcf_record_pri - update the lpfc_fcf_pri record.
1749	* @phba: pointer to lpfc hba data structure.
1750	* @fcf_index: Index for the lpfc_fcf_record.
1751	* @new_fcf_record: pointer to hba fcf record.
1752	*
1753	* This routine updates the driver FCF priority record from the new HBA FCF
1754	* record. The hbalock is asserted held in the code path calling this
1755	* routine.
1756	**/
1757	static void
1758	__lpfc_update_fcf_record_pri(struct lpfc_hba *phba, uint16_t fcf_index,
1759	struct fcf_record *new_fcf_record
1760	)
1761	{
1762	struct lpfc_fcf_pri *fcf_pri;
1763
1764	fcf_pri = &phba->fcf.fcf_pri[fcf_index];
1765	fcf_pri->fcf_rec.fcf_index = fcf_index;
1766	/* FCF record priority */
1767	fcf_pri->fcf_rec.priority = new_fcf_record->fip_priority;
1768
1769	}
1770
1771	/**
1772	* lpfc_copy_fcf_record - Copy fcf information to lpfc_hba.
1773	* @fcf_rec: pointer to driver fcf record.
1774	* @new_fcf_record: pointer to fcf record.
1775	*
1776	* This routine copies the FCF information from the FCF
1777	* record to lpfc_hba data structure.
1778	**/
1779	static void
1780	lpfc_copy_fcf_record(struct lpfc_fcf_rec *fcf_rec,
1781	struct fcf_record *new_fcf_record)
1782	{
1783	/* Fabric name */
1784	fcf_rec->fabric_name[0] =
1785	bf_get(lpfc_fcf_record_fab_name_0, new_fcf_record);
1786	fcf_rec->fabric_name[1] =
1787	bf_get(lpfc_fcf_record_fab_name_1, new_fcf_record);
1788	fcf_rec->fabric_name[2] =
1789	bf_get(lpfc_fcf_record_fab_name_2, new_fcf_record);
1790	fcf_rec->fabric_name[3] =
1791	bf_get(lpfc_fcf_record_fab_name_3, new_fcf_record);
1792	fcf_rec->fabric_name[4] =
1793	bf_get(lpfc_fcf_record_fab_name_4, new_fcf_record);
1794	fcf_rec->fabric_name[5] =
1795	bf_get(lpfc_fcf_record_fab_name_5, new_fcf_record);
1796	fcf_rec->fabric_name[6] =
1797	bf_get(lpfc_fcf_record_fab_name_6, new_fcf_record);
1798	fcf_rec->fabric_name[7] =
1799	bf_get(lpfc_fcf_record_fab_name_7, new_fcf_record);
1800	/* Mac address */
1801	fcf_rec->mac_addr[0] = bf_get(lpfc_fcf_record_mac_0, new_fcf_record);
1802	fcf_rec->mac_addr[1] = bf_get(lpfc_fcf_record_mac_1, new_fcf_record);
1803	fcf_rec->mac_addr[2] = bf_get(lpfc_fcf_record_mac_2, new_fcf_record);
1804	fcf_rec->mac_addr[3] = bf_get(lpfc_fcf_record_mac_3, new_fcf_record);
1805	fcf_rec->mac_addr[4] = bf_get(lpfc_fcf_record_mac_4, new_fcf_record);
1806	fcf_rec->mac_addr[5] = bf_get(lpfc_fcf_record_mac_5, new_fcf_record);
1807	/* FCF record index */
1808	fcf_rec->fcf_indx = bf_get(lpfc_fcf_record_fcf_index, new_fcf_record);
1809	/* FCF record priority */
1810	fcf_rec->priority = new_fcf_record->fip_priority;
1811	/* Switch name */
1812	fcf_rec->switch_name[0] =
1813	bf_get(lpfc_fcf_record_switch_name_0, new_fcf_record);
1814	fcf_rec->switch_name[1] =
1815	bf_get(lpfc_fcf_record_switch_name_1, new_fcf_record);
1816	fcf_rec->switch_name[2] =
1817	bf_get(lpfc_fcf_record_switch_name_2, new_fcf_record);
1818	fcf_rec->switch_name[3] =
1819	bf_get(lpfc_fcf_record_switch_name_3, new_fcf_record);
1820	fcf_rec->switch_name[4] =
1821	bf_get(lpfc_fcf_record_switch_name_4, new_fcf_record);
1822	fcf_rec->switch_name[5] =
1823	bf_get(lpfc_fcf_record_switch_name_5, new_fcf_record);
1824	fcf_rec->switch_name[6] =
1825	bf_get(lpfc_fcf_record_switch_name_6, new_fcf_record);
1826	fcf_rec->switch_name[7] =
1827	bf_get(lpfc_fcf_record_switch_name_7, new_fcf_record);
1828	}
1829
1830	/**
1831	* __lpfc_update_fcf_record - Update driver fcf record
1832	* @phba: pointer to lpfc hba data structure.
1833	* @fcf_rec: pointer to driver fcf record.
1834	* @new_fcf_record: pointer to hba fcf record.
1835	* @addr_mode: address mode to be set to the driver fcf record.
1836	* @vlan_id: vlan tag to be set to the driver fcf record.
1837	* @flag: flag bits to be set to the driver fcf record.
1838	*
1839	* This routine updates the driver FCF record from the new HBA FCF record
1840	* together with the address mode, vlan_id, and other informations. This
1841	* routine is called with the hbalock held.
1842	**/
1843	static void
1844	__lpfc_update_fcf_record(struct lpfc_hba *phba, struct lpfc_fcf_rec *fcf_rec,
1845	struct fcf_record *new_fcf_record, uint32_t addr_mode,
1846	uint16_t vlan_id, uint32_t flag)
1847	{
1848	lockdep_assert_held(&phba->hbalock);
1849
1850	/* Copy the fields from the HBA's FCF record */
1851	lpfc_copy_fcf_record(fcf_rec, new_fcf_record);
1852	/* Update other fields of driver FCF record */
1853	fcf_rec->addr_mode = addr_mode;
1854	fcf_rec->vlan_id = vlan_id;
1855	fcf_rec->flag |= (flag | RECORD_VALID);
1856	__lpfc_update_fcf_record_pri(phba,
1857	bf_get(lpfc_fcf_record_fcf_index, new_fcf_record),
1858	new_fcf_record);
1859	}
1860
1861	/**
1862	* lpfc_register_fcf - Register the FCF with hba.
1863	* @phba: pointer to lpfc hba data structure.
1864	*
1865	* This routine issues a register fcfi mailbox command to register
1866	* the fcf with HBA.
1867	**/
1868	static void
1869	lpfc_register_fcf(struct lpfc_hba *phba)
1870	{
1871	LPFC_MBOXQ_t *fcf_mbxq;
1872	int rc;
1873
1874	spin_lock_irq(lock: &phba->hbalock);
1875	/* If the FCF is not available do nothing. */
1876	if (!(phba->fcf.fcf_flag & FCF_AVAILABLE)) {
1877	phba->hba_flag &= ~(FCF_TS_INPROG | FCF_RR_INPROG);
1878	spin_unlock_irq(lock: &phba->hbalock);
1879	return;
1880	}
1881
1882	/* The FCF is already registered, start discovery */
1883	if (phba->fcf.fcf_flag & FCF_REGISTERED) {
1884	phba->fcf.fcf_flag |= (FCF_SCAN_DONE | FCF_IN_USE);
1885	phba->hba_flag &= ~FCF_TS_INPROG;
1886	if (phba->pport->port_state != LPFC_FLOGI &&
1887	phba->pport->fc_flag & FC_FABRIC) {
1888	phba->hba_flag |= FCF_RR_INPROG;
1889	spin_unlock_irq(lock: &phba->hbalock);
1890	lpfc_initial_flogi(phba->pport);
1891	return;
1892	}
1893	spin_unlock_irq(lock: &phba->hbalock);
1894	return;
1895	}
1896	spin_unlock_irq(lock: &phba->hbalock);
1897
1898	fcf_mbxq = mempool_alloc(pool: phba->mbox_mem_pool, GFP_KERNEL);
1899	if (!fcf_mbxq) {
1900	spin_lock_irq(lock: &phba->hbalock);
1901	phba->hba_flag &= ~(FCF_TS_INPROG | FCF_RR_INPROG);
1902	spin_unlock_irq(lock: &phba->hbalock);
1903	return;
1904	}
1905
1906	lpfc_reg_fcfi(phba, fcf_mbxq);
1907	fcf_mbxq->vport = phba->pport;
1908	fcf_mbxq->mbox_cmpl = lpfc_mbx_cmpl_reg_fcfi;
1909	rc = lpfc_sli_issue_mbox(phba, fcf_mbxq, MBX_NOWAIT);
1910	if (rc == MBX_NOT_FINISHED) {
1911	spin_lock_irq(lock: &phba->hbalock);
1912	phba->hba_flag &= ~(FCF_TS_INPROG | FCF_RR_INPROG);
1913	spin_unlock_irq(lock: &phba->hbalock);
1914	mempool_free(element: fcf_mbxq, pool: phba->mbox_mem_pool);
1915	}
1916
1917	return;
1918	}
1919
1920	/**
1921	* lpfc_match_fcf_conn_list - Check if the FCF record can be used for discovery.
1922	* @phba: pointer to lpfc hba data structure.
1923	* @new_fcf_record: pointer to fcf record.
1924	* @boot_flag: Indicates if this record used by boot bios.
1925	* @addr_mode: The address mode to be used by this FCF
1926	* @vlan_id: The vlan id to be used as vlan tagging by this FCF.
1927	*
1928	* This routine compare the fcf record with connect list obtained from the
1929	* config region to decide if this FCF can be used for SAN discovery. It returns
1930	* 1 if this record can be used for SAN discovery else return zero. If this FCF
1931	* record can be used for SAN discovery, the boot_flag will indicate if this FCF
1932	* is used by boot bios and addr_mode will indicate the addressing mode to be
1933	* used for this FCF when the function returns.
1934	* If the FCF record need to be used with a particular vlan id, the vlan is
1935	* set in the vlan_id on return of the function. If not VLAN tagging need to
1936	* be used with the FCF vlan_id will be set to LPFC_FCOE_NULL_VID;
1937	**/
1938	static int
1939	lpfc_match_fcf_conn_list(struct lpfc_hba *phba,
1940	struct fcf_record *new_fcf_record,
1941	uint32_t *boot_flag, uint32_t *addr_mode,
1942	uint16_t *vlan_id)
1943	{
1944	struct lpfc_fcf_conn_entry *conn_entry;
1945	int i, j, fcf_vlan_id = 0;
1946
1947	/* Find the lowest VLAN id in the FCF record */
1948	for (i = 0; i < 512; i++) {
1949	if (new_fcf_record->vlan_bitmap[i]) {
1950	fcf_vlan_id = i * 8;
1951	j = 0;
1952	while (!((new_fcf_record->vlan_bitmap[i] >> j) & 1)) {
1953	j++;
1954	fcf_vlan_id++;
1955	}
1956	break;
1957	}
1958	}
1959
1960	/* FCF not valid/available or solicitation in progress */
1961	if (!bf_get(lpfc_fcf_record_fcf_avail, new_fcf_record) ||
1962	!bf_get(lpfc_fcf_record_fcf_valid, new_fcf_record) ||
1963	bf_get(lpfc_fcf_record_fcf_sol, new_fcf_record))
1964	return 0;
1965
1966	if (!(phba->hba_flag & HBA_FIP_SUPPORT)) {
1967	*boot_flag = 0;
1968	*addr_mode = bf_get(lpfc_fcf_record_mac_addr_prov,
1969	new_fcf_record);
1970	if (phba->valid_vlan)
1971	*vlan_id = phba->vlan_id;
1972	else
1973	*vlan_id = LPFC_FCOE_NULL_VID;
1974	return 1;
1975	}
1976
1977	/*
1978	* If there are no FCF connection table entry, driver connect to all
1979	* FCFs.
1980	*/
1981	if (list_empty(head: &phba->fcf_conn_rec_list)) {
1982	*boot_flag = 0;
1983	*addr_mode = bf_get(lpfc_fcf_record_mac_addr_prov,
1984	new_fcf_record);
1985
1986	/*
1987	* When there are no FCF connect entries, use driver's default
1988	* addressing mode - FPMA.
1989	*/
1990	if (*addr_mode & LPFC_FCF_FPMA)
1991	*addr_mode = LPFC_FCF_FPMA;
1992
1993	/* If FCF record report a vlan id use that vlan id */
1994	if (fcf_vlan_id)
1995	*vlan_id = fcf_vlan_id;
1996	else
1997	*vlan_id = LPFC_FCOE_NULL_VID;
1998	return 1;
1999	}
2000
2001	list_for_each_entry(conn_entry,
2002	&phba->fcf_conn_rec_list, list) {
2003	if (!(conn_entry->conn_rec.flags & FCFCNCT_VALID))
2004	continue;
2005
2006	if ((conn_entry->conn_rec.flags & FCFCNCT_FBNM_VALID) &&
2007	!lpfc_fab_name_match(fab_name: conn_entry->conn_rec.fabric_name,
2008	new_fcf_record))
2009	continue;
2010	if ((conn_entry->conn_rec.flags & FCFCNCT_SWNM_VALID) &&
2011	!lpfc_sw_name_match(sw_name: conn_entry->conn_rec.switch_name,
2012	new_fcf_record))
2013	continue;
2014	if (conn_entry->conn_rec.flags & FCFCNCT_VLAN_VALID) {
2015	/*
2016	* If the vlan bit map does not have the bit set for the
2017	* vlan id to be used, then it is not a match.
2018	*/
2019	if (!(new_fcf_record->vlan_bitmap
2020	[conn_entry->conn_rec.vlan_tag / 8] &
2021	(1 << (conn_entry->conn_rec.vlan_tag % 8))))
2022	continue;
2023	}
2024
2025	/*
2026	* If connection record does not support any addressing mode,
2027	* skip the FCF record.
2028	*/
2029	if (!(bf_get(lpfc_fcf_record_mac_addr_prov, new_fcf_record)
2030	& (LPFC_FCF_FPMA | LPFC_FCF_SPMA)))
2031	continue;
2032
2033	/*
2034	* Check if the connection record specifies a required
2035	* addressing mode.
2036	*/
2037	if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) &&
2038	!(conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED)) {
2039
2040	/*
2041	* If SPMA required but FCF not support this continue.
2042	*/
2043	if ((conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) &&
2044	!(bf_get(lpfc_fcf_record_mac_addr_prov,
2045	new_fcf_record) & LPFC_FCF_SPMA))
2046	continue;
2047
2048	/*
2049	* If FPMA required but FCF not support this continue.
2050	*/
2051	if (!(conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) &&
2052	!(bf_get(lpfc_fcf_record_mac_addr_prov,
2053	new_fcf_record) & LPFC_FCF_FPMA))
2054	continue;
2055	}
2056
2057	/*
2058	* This fcf record matches filtering criteria.
2059	*/
2060	if (conn_entry->conn_rec.flags & FCFCNCT_BOOT)
2061	*boot_flag = 1;
2062	else
2063	*boot_flag = 0;
2064
2065	/*
2066	* If user did not specify any addressing mode, or if the
2067	* preferred addressing mode specified by user is not supported
2068	* by FCF, allow fabric to pick the addressing mode.
2069	*/
2070	*addr_mode = bf_get(lpfc_fcf_record_mac_addr_prov,
2071	new_fcf_record);
2072	/*
2073	* If the user specified a required address mode, assign that
2074	* address mode
2075	*/
2076	if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) &&
2077	(!(conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED)))
2078	*addr_mode = (conn_entry->conn_rec.flags &
2079	FCFCNCT_AM_SPMA) ?
2080	LPFC_FCF_SPMA : LPFC_FCF_FPMA;
2081	/*
2082	* If the user specified a preferred address mode, use the
2083	* addr mode only if FCF support the addr_mode.
2084	*/
2085	else if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) &&
2086	(conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED) &&
2087	(conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) &&
2088	(*addr_mode & LPFC_FCF_SPMA))
2089	*addr_mode = LPFC_FCF_SPMA;
2090	else if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) &&
2091	(conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED) &&
2092	!(conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) &&
2093	(*addr_mode & LPFC_FCF_FPMA))
2094	*addr_mode = LPFC_FCF_FPMA;
2095
2096	/* If matching connect list has a vlan id, use it */
2097	if (conn_entry->conn_rec.flags & FCFCNCT_VLAN_VALID)
2098	*vlan_id = conn_entry->conn_rec.vlan_tag;
2099	/*
2100	* If no vlan id is specified in connect list, use the vlan id
2101	* in the FCF record
2102	*/
2103	else if (fcf_vlan_id)
2104	*vlan_id = fcf_vlan_id;
2105	else
2106	*vlan_id = LPFC_FCOE_NULL_VID;
2107
2108	return 1;
2109	}
2110
2111	return 0;
2112	}
2113
2114	/**
2115	* lpfc_check_pending_fcoe_event - Check if there is pending fcoe event.
2116	* @phba: pointer to lpfc hba data structure.
2117	* @unreg_fcf: Unregister FCF if FCF table need to be re-scaned.
2118	*
2119	* This function check if there is any fcoe event pending while driver
2120	* scan FCF entries. If there is any pending event, it will restart the
2121	* FCF saning and return 1 else return 0.
2122	*/
2123	int
2124	lpfc_check_pending_fcoe_event(struct lpfc_hba *phba, uint8_t unreg_fcf)
2125	{
2126	/*
2127	* If the Link is up and no FCoE events while in the
2128	* FCF discovery, no need to restart FCF discovery.
2129	*/
2130	if ((phba->link_state >= LPFC_LINK_UP) &&
2131	(phba->fcoe_eventtag == phba->fcoe_eventtag_at_fcf_scan))
2132	return 0;
2133
2134	lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2135	"2768 Pending link or FCF event during current "
2136	"handling of the previous event: link_state:x%x, "
2137	"evt_tag_at_scan:x%x, evt_tag_current:x%x\n",
2138	phba->link_state, phba->fcoe_eventtag_at_fcf_scan,
2139	phba->fcoe_eventtag);
2140
2141	spin_lock_irq(lock: &phba->hbalock);
2142	phba->fcf.fcf_flag &= ~FCF_AVAILABLE;
2143	spin_unlock_irq(lock: &phba->hbalock);
2144
2145	if (phba->link_state >= LPFC_LINK_UP) {
2146	lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY,
2147	"2780 Restart FCF table scan due to "
2148	"pending FCF event:evt_tag_at_scan:x%x, "
2149	"evt_tag_current:x%x\n",
2150	phba->fcoe_eventtag_at_fcf_scan,
2151	phba->fcoe_eventtag);
2152	lpfc_sli4_fcf_scan_read_fcf_rec(phba, LPFC_FCOE_FCF_GET_FIRST);
2153	} else {
2154	/*
2155	* Do not continue FCF discovery and clear FCF_TS_INPROG
2156	* flag
2157	*/
2158	lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY,
2159	"2833 Stop FCF discovery process due to link "
2160	"state change (x%x)\n", phba->link_state);
2161	spin_lock_irq(lock: &phba->hbalock);
2162	phba->hba_flag &= ~(FCF_TS_INPROG | FCF_RR_INPROG);
2163	phba->fcf.fcf_flag &= ~(FCF_REDISC_FOV | FCF_DISCOVERY);
2164	spin_unlock_irq(lock: &phba->hbalock);
2165	}
2166
2167	/* Unregister the currently registered FCF if required */
2168	if (unreg_fcf) {
2169	spin_lock_irq(lock: &phba->hbalock);
2170	phba->fcf.fcf_flag &= ~FCF_REGISTERED;
2171	spin_unlock_irq(lock: &phba->hbalock);
2172	lpfc_sli4_unregister_fcf(phba);
2173	}
2174	return 1;
2175	}
2176
2177	/**
2178	* lpfc_sli4_new_fcf_random_select - Randomly select an eligible new fcf record
2179	* @phba: pointer to lpfc hba data structure.
2180	* @fcf_cnt: number of eligible fcf record seen so far.
2181	*
2182	* This function makes an running random selection decision on FCF record to
2183	* use through a sequence of @fcf_cnt eligible FCF records with equal
2184	* probability. To perform integer manunipulation of random numbers with
2185	* size unit32_t, a 16-bit random number returned from get_random_u16() is
2186	* taken as the random random number generated.
2187	*
2188	* Returns true when outcome is for the newly read FCF record should be
2189	* chosen; otherwise, return false when outcome is for keeping the previously
2190	* chosen FCF record.
2191	**/
2192	static bool
2193	lpfc_sli4_new_fcf_random_select(struct lpfc_hba *phba, uint32_t fcf_cnt)
2194	{
2195	uint32_t rand_num;
2196
2197	/* Get 16-bit uniform random number */
2198	rand_num = get_random_u16();
2199
2200	/* Decision with probability 1/fcf_cnt */
2201	if ((fcf_cnt * rand_num) < 0xFFFF)
2202	return true;
2203	else
2204	return false;
2205	}
2206
2207	/**
2208	* lpfc_sli4_fcf_rec_mbox_parse - Parse read_fcf mbox command.
2209	* @phba: pointer to lpfc hba data structure.
2210	* @mboxq: pointer to mailbox object.
2211	* @next_fcf_index: pointer to holder of next fcf index.
2212	*
2213	* This routine parses the non-embedded fcf mailbox command by performing the
2214	* necessarily error checking, non-embedded read FCF record mailbox command
2215	* SGE parsing, and endianness swapping.
2216	*
2217	* Returns the pointer to the new FCF record in the non-embedded mailbox
2218	* command DMA memory if successfully, other NULL.
2219	*/
2220	static struct fcf_record *
2221	lpfc_sli4_fcf_rec_mbox_parse(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq,
2222	uint16_t *next_fcf_index)
2223	{
2224	void *virt_addr;
2225	struct lpfc_mbx_sge sge;
2226	struct lpfc_mbx_read_fcf_tbl *read_fcf;
2227	uint32_t shdr_status, shdr_add_status, if_type;
2228	union lpfc_sli4_cfg_shdr *shdr;
2229	struct fcf_record *new_fcf_record;
2230
2231	/* Get the first SGE entry from the non-embedded DMA memory. This
2232	* routine only uses a single SGE.
2233	*/
2234	lpfc_sli4_mbx_sge_get(mboxq, 0, &sge);
2235	if (unlikely(!mboxq->sge_array)) {
2236	lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
2237	"2524 Failed to get the non-embedded SGE "
2238	"virtual address\n");
2239	return NULL;
2240	}
2241	virt_addr = mboxq->sge_array->addr[0];
2242
2243	shdr = (union lpfc_sli4_cfg_shdr *)virt_addr;
2244	lpfc_sli_pcimem_bcopy(shdr, shdr,
2245	sizeof(union lpfc_sli4_cfg_shdr));
2246	shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
2247	if_type = bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf);
2248	shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response);
2249	if (shdr_status || shdr_add_status) {
2250	if (shdr_status == STATUS_FCF_TABLE_EMPTY ||
2251	if_type == LPFC_SLI_INTF_IF_TYPE_2)
2252	lpfc_printf_log(phba, KERN_ERR,
2253	LOG_TRACE_EVENT,
2254	"2726 READ_FCF_RECORD Indicates empty "
2255	"FCF table.\n");
2256	else
2257	lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
2258	"2521 READ_FCF_RECORD mailbox failed "
2259	"with status x%x add_status x%x, "
2260	"mbx\n", shdr_status, shdr_add_status);
2261	return NULL;
2262	}
2263
2264	/* Interpreting the returned information of the FCF record */
2265	read_fcf = (struct lpfc_mbx_read_fcf_tbl *)virt_addr;
2266	lpfc_sli_pcimem_bcopy(read_fcf, read_fcf,
2267	sizeof(struct lpfc_mbx_read_fcf_tbl));
2268	*next_fcf_index = bf_get(lpfc_mbx_read_fcf_tbl_nxt_vindx, read_fcf);
2269	new_fcf_record = (struct fcf_record *)(virt_addr +
2270	sizeof(struct lpfc_mbx_read_fcf_tbl));
2271	lpfc_sli_pcimem_bcopy(new_fcf_record, new_fcf_record,
2272	offsetof(struct fcf_record, vlan_bitmap));
2273	new_fcf_record->word137 = le32_to_cpu(new_fcf_record->word137);
2274	new_fcf_record->word138 = le32_to_cpu(new_fcf_record->word138);
2275
2276	return new_fcf_record;
2277	}
2278
2279	/**
2280	* lpfc_sli4_log_fcf_record_info - Log the information of a fcf record
2281	* @phba: pointer to lpfc hba data structure.
2282	* @fcf_record: pointer to the fcf record.
2283	* @vlan_id: the lowest vlan identifier associated to this fcf record.
2284	* @next_fcf_index: the index to the next fcf record in hba's fcf table.
2285	*
2286	* This routine logs the detailed FCF record if the LOG_FIP loggin is
2287	* enabled.
2288	**/
2289	static void
2290	lpfc_sli4_log_fcf_record_info(struct lpfc_hba *phba,
2291	struct fcf_record *fcf_record,
2292	uint16_t vlan_id,
2293	uint16_t next_fcf_index)
2294	{
2295	lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2296	"2764 READ_FCF_RECORD:\n"
2297	"\tFCF_Index : x%x\n"
2298	"\tFCF_Avail : x%x\n"
2299	"\tFCF_Valid : x%x\n"
2300	"\tFCF_SOL : x%x\n"
2301	"\tFIP_Priority : x%x\n"
2302	"\tMAC_Provider : x%x\n"
2303	"\tLowest VLANID : x%x\n"
2304	"\tFCF_MAC Addr : x%x:%x:%x:%x:%x:%x\n"
2305	"\tFabric_Name : x%x:%x:%x:%x:%x:%x:%x:%x\n"
2306	"\tSwitch_Name : x%x:%x:%x:%x:%x:%x:%x:%x\n"
2307	"\tNext_FCF_Index: x%x\n",
2308	bf_get(lpfc_fcf_record_fcf_index, fcf_record),
2309	bf_get(lpfc_fcf_record_fcf_avail, fcf_record),
2310	bf_get(lpfc_fcf_record_fcf_valid, fcf_record),
2311	bf_get(lpfc_fcf_record_fcf_sol, fcf_record),
2312	fcf_record->fip_priority,
2313	bf_get(lpfc_fcf_record_mac_addr_prov, fcf_record),
2314	vlan_id,
2315	bf_get(lpfc_fcf_record_mac_0, fcf_record),
2316	bf_get(lpfc_fcf_record_mac_1, fcf_record),
2317	bf_get(lpfc_fcf_record_mac_2, fcf_record),
2318	bf_get(lpfc_fcf_record_mac_3, fcf_record),
2319	bf_get(lpfc_fcf_record_mac_4, fcf_record),
2320	bf_get(lpfc_fcf_record_mac_5, fcf_record),
2321	bf_get(lpfc_fcf_record_fab_name_0, fcf_record),
2322	bf_get(lpfc_fcf_record_fab_name_1, fcf_record),
2323	bf_get(lpfc_fcf_record_fab_name_2, fcf_record),
2324	bf_get(lpfc_fcf_record_fab_name_3, fcf_record),
2325	bf_get(lpfc_fcf_record_fab_name_4, fcf_record),
2326	bf_get(lpfc_fcf_record_fab_name_5, fcf_record),
2327	bf_get(lpfc_fcf_record_fab_name_6, fcf_record),
2328	bf_get(lpfc_fcf_record_fab_name_7, fcf_record),
2329	bf_get(lpfc_fcf_record_switch_name_0, fcf_record),
2330	bf_get(lpfc_fcf_record_switch_name_1, fcf_record),
2331	bf_get(lpfc_fcf_record_switch_name_2, fcf_record),
2332	bf_get(lpfc_fcf_record_switch_name_3, fcf_record),
2333	bf_get(lpfc_fcf_record_switch_name_4, fcf_record),
2334	bf_get(lpfc_fcf_record_switch_name_5, fcf_record),
2335	bf_get(lpfc_fcf_record_switch_name_6, fcf_record),
2336	bf_get(lpfc_fcf_record_switch_name_7, fcf_record),
2337	next_fcf_index);
2338	}
2339
2340	/**
2341	* lpfc_sli4_fcf_record_match - testing new FCF record for matching existing FCF
2342	* @phba: pointer to lpfc hba data structure.
2343	* @fcf_rec: pointer to an existing FCF record.
2344	* @new_fcf_record: pointer to a new FCF record.
2345	* @new_vlan_id: vlan id from the new FCF record.
2346	*
2347	* This function performs matching test of a new FCF record against an existing
2348	* FCF record. If the new_vlan_id passed in is LPFC_FCOE_IGNORE_VID, vlan id
2349	* will not be used as part of the FCF record matching criteria.
2350	*
2351	* Returns true if all the fields matching, otherwise returns false.
2352	*/
2353	static bool
2354	lpfc_sli4_fcf_record_match(struct lpfc_hba *phba,
2355	struct lpfc_fcf_rec *fcf_rec,
2356	struct fcf_record *new_fcf_record,
2357	uint16_t new_vlan_id)
2358	{
2359	if (new_vlan_id != LPFC_FCOE_IGNORE_VID)
2360	if (!lpfc_vlan_id_match(curr_vlan_id: fcf_rec->vlan_id, new_vlan_id))
2361	return false;
2362	if (!lpfc_mac_addr_match(mac_addr: fcf_rec->mac_addr, new_fcf_record))
2363	return false;
2364	if (!lpfc_sw_name_match(sw_name: fcf_rec->switch_name, new_fcf_record))
2365	return false;
2366	if (!lpfc_fab_name_match(fab_name: fcf_rec->fabric_name, new_fcf_record))
2367	return false;
2368	if (fcf_rec->priority != new_fcf_record->fip_priority)
2369	return false;
2370	return true;
2371	}
2372
2373	/**
2374	* lpfc_sli4_fcf_rr_next_proc - processing next roundrobin fcf
2375	* @vport: Pointer to vport object.
2376	* @fcf_index: index to next fcf.
2377	*
2378	* This function processing the roundrobin fcf failover to next fcf index.
2379	* When this function is invoked, there will be a current fcf registered
2380	* for flogi.
2381	* Return: 0 for continue retrying flogi on currently registered fcf;
2382	* 1 for stop flogi on currently registered fcf;
2383	*/
2384	int lpfc_sli4_fcf_rr_next_proc(struct lpfc_vport *vport, uint16_t fcf_index)
2385	{
2386	struct lpfc_hba *phba = vport->phba;
2387	int rc;
2388
2389	if (fcf_index == LPFC_FCOE_FCF_NEXT_NONE) {
2390	spin_lock_irq(lock: &phba->hbalock);
2391	if (phba->hba_flag & HBA_DEVLOSS_TMO) {
2392	spin_unlock_irq(lock: &phba->hbalock);
2393	lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2394	"2872 Devloss tmo with no eligible "
2395	"FCF, unregister in-use FCF (x%x) "
2396	"and rescan FCF table\n",
2397	phba->fcf.current_rec.fcf_indx);
2398	lpfc_unregister_fcf_rescan(phba);
2399	goto stop_flogi_current_fcf;
2400	}
2401	/* Mark the end to FLOGI roundrobin failover */
2402	phba->hba_flag &= ~FCF_RR_INPROG;
2403	/* Allow action to new fcf asynchronous event */
2404	phba->fcf.fcf_flag &= ~(FCF_AVAILABLE | FCF_SCAN_DONE);
2405	spin_unlock_irq(lock: &phba->hbalock);
2406	lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2407	"2865 No FCF available, stop roundrobin FCF "
2408	"failover and change port state:x%x/x%x\n",
2409	phba->pport->port_state, LPFC_VPORT_UNKNOWN);
2410	phba->pport->port_state = LPFC_VPORT_UNKNOWN;
2411
2412	if (!phba->fcf.fcf_redisc_attempted) {
2413	lpfc_unregister_fcf(phba);
2414
2415	rc = lpfc_sli4_redisc_fcf_table(phba);
2416	if (!rc) {
2417	lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2418	"3195 Rediscover FCF table\n");
2419	phba->fcf.fcf_redisc_attempted = 1;
2420	lpfc_sli4_clear_fcf_rr_bmask(phba);
2421	} else {
2422	lpfc_printf_log(phba, KERN_WARNING, LOG_FIP,
2423	"3196 Rediscover FCF table "
2424	"failed. Status:x%x\n", rc);
2425	}
2426	} else {
2427	lpfc_printf_log(phba, KERN_WARNING, LOG_FIP,
2428	"3197 Already rediscover FCF table "
2429	"attempted. No more retry\n");
2430	}
2431	goto stop_flogi_current_fcf;
2432	} else {
2433	lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_ELS,
2434	"2794 Try FLOGI roundrobin FCF failover to "
2435	"(x%x)\n", fcf_index);
2436	rc = lpfc_sli4_fcf_rr_read_fcf_rec(phba, fcf_index);
2437	if (rc)
2438	lpfc_printf_log(phba, KERN_WARNING, LOG_FIP | LOG_ELS,
2439	"2761 FLOGI roundrobin FCF failover "
2440	"failed (rc:x%x) to read FCF (x%x)\n",
2441	rc, phba->fcf.current_rec.fcf_indx);
2442	else
2443	goto stop_flogi_current_fcf;
2444	}
2445	return 0;
2446
2447	stop_flogi_current_fcf:
2448	lpfc_can_disctmo(vport);
2449	return 1;
2450	}
2451
2452	/**
2453	* lpfc_sli4_fcf_pri_list_del
2454	* @phba: pointer to lpfc hba data structure.
2455	* @fcf_index: the index of the fcf record to delete
2456	* This routine checks the on list flag of the fcf_index to be deleted.
2457	* If it is one the list then it is removed from the list, and the flag
2458	* is cleared. This routine grab the hbalock before removing the fcf
2459	* record from the list.
2460	**/
2461	static void lpfc_sli4_fcf_pri_list_del(struct lpfc_hba *phba,
2462	uint16_t fcf_index)
2463	{
2464	struct lpfc_fcf_pri *new_fcf_pri;
2465
2466	new_fcf_pri = &phba->fcf.fcf_pri[fcf_index];
2467	lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2468	"3058 deleting idx x%x pri x%x flg x%x\n",
2469	fcf_index, new_fcf_pri->fcf_rec.priority,
2470	new_fcf_pri->fcf_rec.flag);
2471	spin_lock_irq(lock: &phba->hbalock);
2472	if (new_fcf_pri->fcf_rec.flag & LPFC_FCF_ON_PRI_LIST) {
2473	if (phba->fcf.current_rec.priority ==
2474	new_fcf_pri->fcf_rec.priority)
2475	phba->fcf.eligible_fcf_cnt--;
2476	list_del_init(entry: &new_fcf_pri->list);
2477	new_fcf_pri->fcf_rec.flag &= ~LPFC_FCF_ON_PRI_LIST;
2478	}
2479	spin_unlock_irq(lock: &phba->hbalock);
2480	}
2481
2482	/**
2483	* lpfc_sli4_set_fcf_flogi_fail
2484	* @phba: pointer to lpfc hba data structure.
2485	* @fcf_index: the index of the fcf record to update
2486	* This routine acquires the hbalock and then set the LPFC_FCF_FLOGI_FAILED
2487	* flag so the round robin selection for the particular priority level
2488	* will try a different fcf record that does not have this bit set.
2489	* If the fcf record is re-read for any reason this flag is cleared brfore
2490	* adding it to the priority list.
2491	**/
2492	void
2493	lpfc_sli4_set_fcf_flogi_fail(struct lpfc_hba *phba, uint16_t fcf_index)
2494	{
2495	struct lpfc_fcf_pri *new_fcf_pri;
2496	new_fcf_pri = &phba->fcf.fcf_pri[fcf_index];
2497	spin_lock_irq(lock: &phba->hbalock);
2498	new_fcf_pri->fcf_rec.flag |= LPFC_FCF_FLOGI_FAILED;
2499	spin_unlock_irq(lock: &phba->hbalock);
2500	}
2501
2502	/**
2503	* lpfc_sli4_fcf_pri_list_add
2504	* @phba: pointer to lpfc hba data structure.
2505	* @fcf_index: the index of the fcf record to add
2506	* @new_fcf_record: pointer to a new FCF record.
2507	* This routine checks the priority of the fcf_index to be added.
2508	* If it is a lower priority than the current head of the fcf_pri list
2509	* then it is added to the list in the right order.
2510	* If it is the same priority as the current head of the list then it
2511	* is added to the head of the list and its bit in the rr_bmask is set.
2512	* If the fcf_index to be added is of a higher priority than the current
2513	* head of the list then the rr_bmask is cleared, its bit is set in the
2514	* rr_bmask and it is added to the head of the list.
2515	* returns:
2516	* 0=success 1=failure
2517	**/
2518	static int lpfc_sli4_fcf_pri_list_add(struct lpfc_hba *phba,
2519	uint16_t fcf_index,
2520	struct fcf_record *new_fcf_record)
2521	{
2522	uint16_t current_fcf_pri;
2523	uint16_t last_index;
2524	struct lpfc_fcf_pri *fcf_pri;
2525	struct lpfc_fcf_pri *next_fcf_pri;
2526	struct lpfc_fcf_pri *new_fcf_pri;
2527	int ret;
2528
2529	new_fcf_pri = &phba->fcf.fcf_pri[fcf_index];
2530	lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2531	"3059 adding idx x%x pri x%x flg x%x\n",
2532	fcf_index, new_fcf_record->fip_priority,
2533	new_fcf_pri->fcf_rec.flag);
2534	spin_lock_irq(lock: &phba->hbalock);
2535	if (new_fcf_pri->fcf_rec.flag & LPFC_FCF_ON_PRI_LIST)
2536	list_del_init(entry: &new_fcf_pri->list);
2537	new_fcf_pri->fcf_rec.fcf_index = fcf_index;
2538	new_fcf_pri->fcf_rec.priority = new_fcf_record->fip_priority;
2539	if (list_empty(head: &phba->fcf.fcf_pri_list)) {
2540	list_add(new: &new_fcf_pri->list, head: &phba->fcf.fcf_pri_list);
2541	ret = lpfc_sli4_fcf_rr_index_set(phba,
2542	new_fcf_pri->fcf_rec.fcf_index);
2543	goto out;
2544	}
2545
2546	last_index = find_first_bit(addr: phba->fcf.fcf_rr_bmask,
2547	LPFC_SLI4_FCF_TBL_INDX_MAX);
2548	if (last_index >= LPFC_SLI4_FCF_TBL_INDX_MAX) {
2549	ret = 0; /* Empty rr list */
2550	goto out;
2551	}
2552	current_fcf_pri = phba->fcf.fcf_pri[last_index].fcf_rec.priority;
2553	if (new_fcf_pri->fcf_rec.priority <= current_fcf_pri) {
2554	list_add(new: &new_fcf_pri->list, head: &phba->fcf.fcf_pri_list);
2555	if (new_fcf_pri->fcf_rec.priority < current_fcf_pri) {
2556	memset(phba->fcf.fcf_rr_bmask, 0,
2557	sizeof(*phba->fcf.fcf_rr_bmask));
2558	/* fcfs_at_this_priority_level = 1; */
2559	phba->fcf.eligible_fcf_cnt = 1;
2560	} else
2561	/* fcfs_at_this_priority_level++; */
2562	phba->fcf.eligible_fcf_cnt++;
2563	ret = lpfc_sli4_fcf_rr_index_set(phba,
2564	new_fcf_pri->fcf_rec.fcf_index);
2565	goto out;
2566	}
2567
2568	list_for_each_entry_safe(fcf_pri, next_fcf_pri,
2569	&phba->fcf.fcf_pri_list, list) {
2570	if (new_fcf_pri->fcf_rec.priority <=
2571	fcf_pri->fcf_rec.priority) {
2572	if (fcf_pri->list.prev == &phba->fcf.fcf_pri_list)
2573	list_add(new: &new_fcf_pri->list,
2574	head: &phba->fcf.fcf_pri_list);
2575	else
2576	list_add(new: &new_fcf_pri->list,
2577	head: &((struct lpfc_fcf_pri *)
2578	fcf_pri->list.prev)->list);
2579	ret = 0;
2580	goto out;
2581	} else if (fcf_pri->list.next == &phba->fcf.fcf_pri_list
2582	|| new_fcf_pri->fcf_rec.priority <
2583	next_fcf_pri->fcf_rec.priority) {
2584	list_add(new: &new_fcf_pri->list, head: &fcf_pri->list);
2585	ret = 0;
2586	goto out;
2587	}
2588	if (new_fcf_pri->fcf_rec.priority > fcf_pri->fcf_rec.priority)
2589	continue;
2590
2591	}
2592	ret = 1;
2593	out:
2594	/* we use = instead of |= to clear the FLOGI_FAILED flag. */
2595	new_fcf_pri->fcf_rec.flag = LPFC_FCF_ON_PRI_LIST;
2596	spin_unlock_irq(lock: &phba->hbalock);
2597	return ret;
2598	}
2599
2600	/**
2601	* lpfc_mbx_cmpl_fcf_scan_read_fcf_rec - fcf scan read_fcf mbox cmpl handler.
2602	* @phba: pointer to lpfc hba data structure.
2603	* @mboxq: pointer to mailbox object.
2604	*
2605	* This function iterates through all the fcf records available in
2606	* HBA and chooses the optimal FCF record for discovery. After finding
2607	* the FCF for discovery it registers the FCF record and kicks start
2608	* discovery.
2609	* If FCF_IN_USE flag is set in currently used FCF, the routine tries to
2610	* use an FCF record which matches fabric name and mac address of the
2611	* currently used FCF record.
2612	* If the driver supports only one FCF, it will try to use the FCF record
2613	* used by BOOT_BIOS.
2614	*/
2615	void
2616	lpfc_mbx_cmpl_fcf_scan_read_fcf_rec(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
2617	{
2618	struct fcf_record *new_fcf_record;
2619	uint32_t boot_flag, addr_mode;
2620	uint16_t fcf_index, next_fcf_index;
2621	struct lpfc_fcf_rec *fcf_rec = NULL;
2622	uint16_t vlan_id = LPFC_FCOE_NULL_VID;
2623	bool select_new_fcf;
2624	int rc;
2625
2626	/* If there is pending FCoE event restart FCF table scan */
2627	if (lpfc_check_pending_fcoe_event(phba, LPFC_SKIP_UNREG_FCF)) {
2628	lpfc_sli4_mbox_cmd_free(phba, mboxq);
2629	return;
2630	}
2631
2632	/* Parse the FCF record from the non-embedded mailbox command */
2633	new_fcf_record = lpfc_sli4_fcf_rec_mbox_parse(phba, mboxq,
2634	next_fcf_index: &next_fcf_index);
2635	if (!new_fcf_record) {
2636	lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
2637	"2765 Mailbox command READ_FCF_RECORD "
2638	"failed to retrieve a FCF record.\n");
2639	/* Let next new FCF event trigger fast failover */
2640	spin_lock_irq(lock: &phba->hbalock);
2641	phba->hba_flag &= ~FCF_TS_INPROG;
2642	spin_unlock_irq(lock: &phba->hbalock);
2643	lpfc_sli4_mbox_cmd_free(phba, mboxq);
2644	return;
2645	}
2646
2647	/* Check the FCF record against the connection list */
2648	rc = lpfc_match_fcf_conn_list(phba, new_fcf_record, boot_flag: &boot_flag,
2649	addr_mode: &addr_mode, vlan_id: &vlan_id);
2650
2651	/* Log the FCF record information if turned on */
2652	lpfc_sli4_log_fcf_record_info(phba, fcf_record: new_fcf_record, vlan_id,
2653	next_fcf_index);
2654
2655	/*
2656	* If the fcf record does not match with connect list entries
2657	* read the next entry; otherwise, this is an eligible FCF
2658	* record for roundrobin FCF failover.
2659	*/
2660	if (!rc) {
2661	lpfc_sli4_fcf_pri_list_del(phba,
2662	bf_get(lpfc_fcf_record_fcf_index,
2663	new_fcf_record));
2664	lpfc_printf_log(phba, KERN_WARNING, LOG_FIP,
2665	"2781 FCF (x%x) failed connection "
2666	"list check: (x%x/x%x/%x)\n",
2667	bf_get(lpfc_fcf_record_fcf_index,
2668	new_fcf_record),
2669	bf_get(lpfc_fcf_record_fcf_avail,
2670	new_fcf_record),
2671	bf_get(lpfc_fcf_record_fcf_valid,
2672	new_fcf_record),
2673	bf_get(lpfc_fcf_record_fcf_sol,
2674	new_fcf_record));
2675	if ((phba->fcf.fcf_flag & FCF_IN_USE) &&
2676	lpfc_sli4_fcf_record_match(phba, fcf_rec: &phba->fcf.current_rec,
2677	new_fcf_record, LPFC_FCOE_IGNORE_VID)) {
2678	if (bf_get(lpfc_fcf_record_fcf_index, new_fcf_record) !=
2679	phba->fcf.current_rec.fcf_indx) {
2680	lpfc_printf_log(phba, KERN_ERR,
2681	LOG_TRACE_EVENT,
2682	"2862 FCF (x%x) matches property "
2683	"of in-use FCF (x%x)\n",
2684	bf_get(lpfc_fcf_record_fcf_index,
2685	new_fcf_record),
2686	phba->fcf.current_rec.fcf_indx);
2687	goto read_next_fcf;
2688	}
2689	/*
2690	* In case the current in-use FCF record becomes
2691	* invalid/unavailable during FCF discovery that
2692	* was not triggered by fast FCF failover process,
2693	* treat it as fast FCF failover.
2694	*/
2695	if (!(phba->fcf.fcf_flag & FCF_REDISC_PEND) &&
2696	!(phba->fcf.fcf_flag & FCF_REDISC_FOV)) {
2697	lpfc_printf_log(phba, KERN_WARNING, LOG_FIP,
2698	"2835 Invalid in-use FCF "
2699	"(x%x), enter FCF failover "
2700	"table scan.\n",
2701	phba->fcf.current_rec.fcf_indx);
2702	spin_lock_irq(lock: &phba->hbalock);
2703	phba->fcf.fcf_flag |= FCF_REDISC_FOV;
2704	spin_unlock_irq(lock: &phba->hbalock);
2705	lpfc_sli4_mbox_cmd_free(phba, mboxq);
2706	lpfc_sli4_fcf_scan_read_fcf_rec(phba,
2707	LPFC_FCOE_FCF_GET_FIRST);
2708	return;
2709	}
2710	}
2711	goto read_next_fcf;
2712	} else {
2713	fcf_index = bf_get(lpfc_fcf_record_fcf_index, new_fcf_record);
2714	rc = lpfc_sli4_fcf_pri_list_add(phba, fcf_index,
2715	new_fcf_record);
2716	if (rc)
2717	goto read_next_fcf;
2718	}
2719
2720	/*
2721	* If this is not the first FCF discovery of the HBA, use last
2722	* FCF record for the discovery. The condition that a rescan
2723	* matches the in-use FCF record: fabric name, switch name, mac
2724	* address, and vlan_id.
2725	*/
2726	spin_lock_irq(lock: &phba->hbalock);
2727	if (phba->fcf.fcf_flag & FCF_IN_USE) {
2728	if (phba->cfg_fcf_failover_policy == LPFC_FCF_FOV &&
2729	lpfc_sli4_fcf_record_match(phba, fcf_rec: &phba->fcf.current_rec,
2730	new_fcf_record, new_vlan_id: vlan_id)) {
2731	if (bf_get(lpfc_fcf_record_fcf_index, new_fcf_record) ==
2732	phba->fcf.current_rec.fcf_indx) {
2733	phba->fcf.fcf_flag |= FCF_AVAILABLE;
2734	if (phba->fcf.fcf_flag & FCF_REDISC_PEND)
2735	/* Stop FCF redisc wait timer */
2736	__lpfc_sli4_stop_fcf_redisc_wait_timer(
2737	phba);
2738	else if (phba->fcf.fcf_flag & FCF_REDISC_FOV)
2739	/* Fast failover, mark completed */
2740	phba->fcf.fcf_flag &= ~FCF_REDISC_FOV;
2741	spin_unlock_irq(lock: &phba->hbalock);
2742	lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2743	"2836 New FCF matches in-use "
2744	"FCF (x%x), port_state:x%x, "
2745	"fc_flag:x%x\n",
2746	phba->fcf.current_rec.fcf_indx,
2747	phba->pport->port_state,
2748	phba->pport->fc_flag);
2749	goto out;
2750	} else
2751	lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
2752	"2863 New FCF (x%x) matches "
2753	"property of in-use FCF (x%x)\n",
2754	bf_get(lpfc_fcf_record_fcf_index,
2755	new_fcf_record),
2756	phba->fcf.current_rec.fcf_indx);
2757	}
2758	/*
2759	* Read next FCF record from HBA searching for the matching
2760	* with in-use record only if not during the fast failover
2761	* period. In case of fast failover period, it shall try to
2762	* determine whether the FCF record just read should be the
2763	* next candidate.
2764	*/
2765	if (!(phba->fcf.fcf_flag & FCF_REDISC_FOV)) {
2766	spin_unlock_irq(lock: &phba->hbalock);
2767	goto read_next_fcf;
2768	}
2769	}
2770	/*
2771	* Update on failover FCF record only if it's in FCF fast-failover
2772	* period; otherwise, update on current FCF record.
2773	*/
2774	if (phba->fcf.fcf_flag & FCF_REDISC_FOV)
2775	fcf_rec = &phba->fcf.failover_rec;
2776	else
2777	fcf_rec = &phba->fcf.current_rec;
2778
2779	if (phba->fcf.fcf_flag & FCF_AVAILABLE) {
2780	/*
2781	* If the driver FCF record does not have boot flag
2782	* set and new hba fcf record has boot flag set, use
2783	* the new hba fcf record.
2784	*/
2785	if (boot_flag && !(fcf_rec->flag & BOOT_ENABLE)) {
2786	/* Choose this FCF record */
2787	lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2788	"2837 Update current FCF record "
2789	"(x%x) with new FCF record (x%x)\n",
2790	fcf_rec->fcf_indx,
2791	bf_get(lpfc_fcf_record_fcf_index,
2792	new_fcf_record));
2793	__lpfc_update_fcf_record(phba, fcf_rec, new_fcf_record,
2794	addr_mode, vlan_id, BOOT_ENABLE);
2795	spin_unlock_irq(lock: &phba->hbalock);
2796	goto read_next_fcf;
2797	}
2798	/*
2799	* If the driver FCF record has boot flag set and the
2800	* new hba FCF record does not have boot flag, read
2801	* the next FCF record.
2802	*/
2803	if (!boot_flag && (fcf_rec->flag & BOOT_ENABLE)) {
2804	spin_unlock_irq(lock: &phba->hbalock);
2805	goto read_next_fcf;
2806	}
2807	/*
2808	* If the new hba FCF record has lower priority value
2809	* than the driver FCF record, use the new record.
2810	*/
2811	if (new_fcf_record->fip_priority < fcf_rec->priority) {
2812	/* Choose the new FCF record with lower priority */
2813	lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2814	"2838 Update current FCF record "
2815	"(x%x) with new FCF record (x%x)\n",
2816	fcf_rec->fcf_indx,
2817	bf_get(lpfc_fcf_record_fcf_index,
2818	new_fcf_record));
2819	__lpfc_update_fcf_record(phba, fcf_rec, new_fcf_record,
2820	addr_mode, vlan_id, flag: 0);
2821	/* Reset running random FCF selection count */
2822	phba->fcf.eligible_fcf_cnt = 1;
2823	} else if (new_fcf_record->fip_priority == fcf_rec->priority) {
2824	/* Update running random FCF selection count */
2825	phba->fcf.eligible_fcf_cnt++;
2826	select_new_fcf = lpfc_sli4_new_fcf_random_select(phba,
2827	fcf_cnt: phba->fcf.eligible_fcf_cnt);
2828	if (select_new_fcf) {
2829	lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2830	"2839 Update current FCF record "
2831	"(x%x) with new FCF record (x%x)\n",
2832	fcf_rec->fcf_indx,
2833	bf_get(lpfc_fcf_record_fcf_index,
2834	new_fcf_record));
2835	/* Choose the new FCF by random selection */
2836	__lpfc_update_fcf_record(phba, fcf_rec,
2837	new_fcf_record,
2838	addr_mode, vlan_id, flag: 0);
2839	}
2840	}
2841	spin_unlock_irq(lock: &phba->hbalock);
2842	goto read_next_fcf;
2843	}
2844	/*
2845	* This is the first suitable FCF record, choose this record for
2846	* initial best-fit FCF.
2847	*/
2848	if (fcf_rec) {
2849	lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2850	"2840 Update initial FCF candidate "
2851	"with FCF (x%x)\n",
2852	bf_get(lpfc_fcf_record_fcf_index,
2853	new_fcf_record));
2854	__lpfc_update_fcf_record(phba, fcf_rec, new_fcf_record,
2855	addr_mode, vlan_id, flag: (boot_flag ?
2856	BOOT_ENABLE : 0));
2857	phba->fcf.fcf_flag |= FCF_AVAILABLE;
2858	/* Setup initial running random FCF selection count */
2859	phba->fcf.eligible_fcf_cnt = 1;
2860	}
2861	spin_unlock_irq(lock: &phba->hbalock);
2862	goto read_next_fcf;
2863
2864	read_next_fcf:
2865	lpfc_sli4_mbox_cmd_free(phba, mboxq);
2866	if (next_fcf_index == LPFC_FCOE_FCF_NEXT_NONE || next_fcf_index == 0) {
2867	if (phba->fcf.fcf_flag & FCF_REDISC_FOV) {
2868	/*
2869	* Case of FCF fast failover scan
2870	*/
2871
2872	/*
2873	* It has not found any suitable FCF record, cancel
2874	* FCF scan inprogress, and do nothing
2875	*/
2876	if (!(phba->fcf.failover_rec.flag & RECORD_VALID)) {
2877	lpfc_printf_log(phba, KERN_WARNING, LOG_FIP,
2878	"2782 No suitable FCF found: "
2879	"(x%x/x%x)\n",
2880	phba->fcoe_eventtag_at_fcf_scan,
2881	bf_get(lpfc_fcf_record_fcf_index,
2882	new_fcf_record));
2883	spin_lock_irq(lock: &phba->hbalock);
2884	if (phba->hba_flag & HBA_DEVLOSS_TMO) {
2885	phba->hba_flag &= ~FCF_TS_INPROG;
2886	spin_unlock_irq(lock: &phba->hbalock);
2887	/* Unregister in-use FCF and rescan */
2888	lpfc_printf_log(phba, KERN_INFO,
2889	LOG_FIP,
2890	"2864 On devloss tmo "
2891	"unreg in-use FCF and "
2892	"rescan FCF table\n");
2893	lpfc_unregister_fcf_rescan(phba);
2894	return;
2895	}
2896	/*
2897	* Let next new FCF event trigger fast failover
2898	*/
2899	phba->hba_flag &= ~FCF_TS_INPROG;
2900	spin_unlock_irq(lock: &phba->hbalock);
2901	return;
2902	}
2903	/*
2904	* It has found a suitable FCF record that is not
2905	* the same as in-use FCF record, unregister the
2906	* in-use FCF record, replace the in-use FCF record
2907	* with the new FCF record, mark FCF fast failover
2908	* completed, and then start register the new FCF
2909	* record.
2910	*/
2911
2912	/* Unregister the current in-use FCF record */
2913	lpfc_unregister_fcf(phba);
2914
2915	/* Replace in-use record with the new record */
2916	lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2917	"2842 Replace in-use FCF (x%x) "
2918	"with failover FCF (x%x)\n",
2919	phba->fcf.current_rec.fcf_indx,
2920	phba->fcf.failover_rec.fcf_indx);
2921	memcpy(&phba->fcf.current_rec,
2922	&phba->fcf.failover_rec,
2923	sizeof(struct lpfc_fcf_rec));
2924	/*
2925	* Mark the fast FCF failover rediscovery completed
2926	* and the start of the first round of the roundrobin
2927	* FCF failover.
2928	*/
2929	spin_lock_irq(lock: &phba->hbalock);
2930	phba->fcf.fcf_flag &= ~FCF_REDISC_FOV;
2931	spin_unlock_irq(lock: &phba->hbalock);
2932	/* Register to the new FCF record */
2933	lpfc_register_fcf(phba);
2934	} else {
2935	/*
2936	* In case of transaction period to fast FCF failover,
2937	* do nothing when search to the end of the FCF table.
2938	*/
2939	if ((phba->fcf.fcf_flag & FCF_REDISC_EVT) ||
2940	(phba->fcf.fcf_flag & FCF_REDISC_PEND))
2941	return;
2942
2943	if (phba->cfg_fcf_failover_policy == LPFC_FCF_FOV &&
2944	phba->fcf.fcf_flag & FCF_IN_USE) {
2945	/*
2946	* In case the current in-use FCF record no
2947	* longer existed during FCF discovery that
2948	* was not triggered by fast FCF failover
2949	* process, treat it as fast FCF failover.
2950	*/
2951	lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2952	"2841 In-use FCF record (x%x) "
2953	"not reported, entering fast "
2954	"FCF failover mode scanning.\n",
2955	phba->fcf.current_rec.fcf_indx);
2956	spin_lock_irq(lock: &phba->hbalock);
2957	phba->fcf.fcf_flag |= FCF_REDISC_FOV;
2958	spin_unlock_irq(lock: &phba->hbalock);
2959	lpfc_sli4_fcf_scan_read_fcf_rec(phba,
2960	LPFC_FCOE_FCF_GET_FIRST);
2961	return;
2962	}
2963	/* Register to the new FCF record */
2964	lpfc_register_fcf(phba);
2965	}
2966	} else
2967	lpfc_sli4_fcf_scan_read_fcf_rec(phba, next_fcf_index);
2968	return;
2969
2970	out:
2971	lpfc_sli4_mbox_cmd_free(phba, mboxq);
2972	lpfc_register_fcf(phba);
2973
2974	return;
2975	}
2976
2977	/**
2978	* lpfc_mbx_cmpl_fcf_rr_read_fcf_rec - fcf roundrobin read_fcf mbox cmpl hdler
2979	* @phba: pointer to lpfc hba data structure.
2980	* @mboxq: pointer to mailbox object.
2981	*
2982	* This is the callback function for FLOGI failure roundrobin FCF failover
2983	* read FCF record mailbox command from the eligible FCF record bmask for
2984	* performing the failover. If the FCF read back is not valid/available, it
2985	* fails through to retrying FLOGI to the currently registered FCF again.
2986	* Otherwise, if the FCF read back is valid and available, it will set the
2987	* newly read FCF record to the failover FCF record, unregister currently
2988	* registered FCF record, copy the failover FCF record to the current
2989	* FCF record, and then register the current FCF record before proceeding
2990	* to trying FLOGI on the new failover FCF.
2991	*/
2992	void
2993	lpfc_mbx_cmpl_fcf_rr_read_fcf_rec(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
2994	{
2995	struct fcf_record *new_fcf_record;
2996	uint32_t boot_flag, addr_mode;
2997	uint16_t next_fcf_index, fcf_index;
2998	uint16_t current_fcf_index;
2999	uint16_t vlan_id = LPFC_FCOE_NULL_VID;
3000	int rc;
3001
3002	/* If link state is not up, stop the roundrobin failover process */
3003	if (phba->link_state < LPFC_LINK_UP) {
3004	spin_lock_irq(lock: &phba->hbalock);
3005	phba->fcf.fcf_flag &= ~FCF_DISCOVERY;
3006	phba->hba_flag &= ~FCF_RR_INPROG;
3007	spin_unlock_irq(lock: &phba->hbalock);
3008	goto out;
3009	}
3010
3011	/* Parse the FCF record from the non-embedded mailbox command */
3012	new_fcf_record = lpfc_sli4_fcf_rec_mbox_parse(phba, mboxq,
3013	next_fcf_index: &next_fcf_index);
3014	if (!new_fcf_record) {
3015	lpfc_printf_log(phba, KERN_WARNING, LOG_FIP,
3016	"2766 Mailbox command READ_FCF_RECORD "
3017	"failed to retrieve a FCF record. "
3018	"hba_flg x%x fcf_flg x%x\n", phba->hba_flag,
3019	phba->fcf.fcf_flag);
3020	lpfc_unregister_fcf_rescan(phba);
3021	goto out;
3022	}
3023
3024	/* Get the needed parameters from FCF record */
3025	rc = lpfc_match_fcf_conn_list(phba, new_fcf_record, boot_flag: &boot_flag,
3026	addr_mode: &addr_mode, vlan_id: &vlan_id);
3027
3028	/* Log the FCF record information if turned on */
3029	lpfc_sli4_log_fcf_record_info(phba, fcf_record: new_fcf_record, vlan_id,
3030	next_fcf_index);
3031
3032	fcf_index = bf_get(lpfc_fcf_record_fcf_index, new_fcf_record);
3033	if (!rc) {
3034	lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
3035	"2848 Remove ineligible FCF (x%x) from "
3036	"from roundrobin bmask\n", fcf_index);
3037	/* Clear roundrobin bmask bit for ineligible FCF */
3038	lpfc_sli4_fcf_rr_index_clear(phba, fcf_index);
3039	/* Perform next round of roundrobin FCF failover */
3040	fcf_index = lpfc_sli4_fcf_rr_next_index_get(phba);
3041	rc = lpfc_sli4_fcf_rr_next_proc(vport: phba->pport, fcf_index);
3042	if (rc)
3043	goto out;
3044	goto error_out;
3045	}
3046
3047	if (fcf_index == phba->fcf.current_rec.fcf_indx) {
3048	lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
3049	"2760 Perform FLOGI roundrobin FCF failover: "
3050	"FCF (x%x) back to FCF (x%x)\n",
3051	phba->fcf.current_rec.fcf_indx, fcf_index);
3052	/* Wait 500 ms before retrying FLOGI to current FCF */
3053	msleep(msecs: 500);
3054	lpfc_issue_init_vfi(phba->pport);
3055	goto out;
3056	}
3057
3058	/* Upload new FCF record to the failover FCF record */
3059	lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
3060	"2834 Update current FCF (x%x) with new FCF (x%x)\n",
3061	phba->fcf.failover_rec.fcf_indx, fcf_index);
3062	spin_lock_irq(lock: &phba->hbalock);
3063	__lpfc_update_fcf_record(phba, fcf_rec: &phba->fcf.failover_rec,
3064	new_fcf_record, addr_mode, vlan_id,
3065	flag: (boot_flag ? BOOT_ENABLE : 0));
3066	spin_unlock_irq(lock: &phba->hbalock);
3067
3068	current_fcf_index = phba->fcf.current_rec.fcf_indx;
3069
3070	/* Unregister the current in-use FCF record */
3071	lpfc_unregister_fcf(phba);
3072
3073	/* Replace in-use record with the new record */
3074	memcpy(&phba->fcf.current_rec, &phba->fcf.failover_rec,
3075	sizeof(struct lpfc_fcf_rec));
3076
3077	lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
3078	"2783 Perform FLOGI roundrobin FCF failover: FCF "
3079	"(x%x) to FCF (x%x)\n", current_fcf_index, fcf_index);
3080
3081	error_out:
3082	lpfc_register_fcf(phba);
3083	out:
3084	lpfc_sli4_mbox_cmd_free(phba, mboxq);
3085	}
3086
3087	/**
3088	* lpfc_mbx_cmpl_read_fcf_rec - read fcf completion handler.
3089	* @phba: pointer to lpfc hba data structure.
3090	* @mboxq: pointer to mailbox object.
3091	*
3092	* This is the callback function of read FCF record mailbox command for
3093	* updating the eligible FCF bmask for FLOGI failure roundrobin FCF
3094	* failover when a new FCF event happened. If the FCF read back is
3095	* valid/available and it passes the connection list check, it updates
3096	* the bmask for the eligible FCF record for roundrobin failover.
3097	*/
3098	void
3099	lpfc_mbx_cmpl_read_fcf_rec(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
3100	{
3101	struct fcf_record *new_fcf_record;
3102	uint32_t boot_flag, addr_mode;
3103	uint16_t fcf_index, next_fcf_index;
3104	uint16_t vlan_id = LPFC_FCOE_NULL_VID;
3105	int rc;
3106
3107	/* If link state is not up, no need to proceed */
3108	if (phba->link_state < LPFC_LINK_UP)
3109	goto out;
3110
3111	/* If FCF discovery period is over, no need to proceed */
3112	if (!(phba->fcf.fcf_flag & FCF_DISCOVERY))
3113	goto out;
3114
3115	/* Parse the FCF record from the non-embedded mailbox command */
3116	new_fcf_record = lpfc_sli4_fcf_rec_mbox_parse(phba, mboxq,
3117	next_fcf_index: &next_fcf_index);
3118	if (!new_fcf_record) {
3119	lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
3120	"2767 Mailbox command READ_FCF_RECORD "
3121	"failed to retrieve a FCF record.\n");
3122	goto out;
3123	}
3124
3125	/* Check the connection list for eligibility */
3126	rc = lpfc_match_fcf_conn_list(phba, new_fcf_record, boot_flag: &boot_flag,
3127	addr_mode: &addr_mode, vlan_id: &vlan_id);
3128
3129	/* Log the FCF record information if turned on */
3130	lpfc_sli4_log_fcf_record_info(phba, fcf_record: new_fcf_record, vlan_id,
3131	next_fcf_index);
3132
3133	if (!rc)
3134	goto out;
3135
3136	/* Update the eligible FCF record index bmask */
3137	fcf_index = bf_get(lpfc_fcf_record_fcf_index, new_fcf_record);
3138
3139	rc = lpfc_sli4_fcf_pri_list_add(phba, fcf_index, new_fcf_record);
3140
3141	out:
3142	lpfc_sli4_mbox_cmd_free(phba, mboxq);
3143	}
3144
3145	/**
3146	* lpfc_init_vfi_cmpl - Completion handler for init_vfi mbox command.
3147	* @phba: pointer to lpfc hba data structure.
3148	* @mboxq: pointer to mailbox data structure.
3149	*
3150	* This function handles completion of init vfi mailbox command.
3151	*/
3152	static void
3153	lpfc_init_vfi_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
3154	{
3155	struct lpfc_vport *vport = mboxq->vport;
3156
3157	/*
3158	* VFI not supported on interface type 0, just do the flogi
3159	* Also continue if the VFI is in use - just use the same one.
3160	*/
3161	if (mboxq->u.mb.mbxStatus &&
3162	(bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) !=
3163	LPFC_SLI_INTF_IF_TYPE_0) &&
3164	mboxq->u.mb.mbxStatus != MBX_VFI_IN_USE) {
3165	lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
3166	"2891 Init VFI mailbox failed 0x%x\n",
3167	mboxq->u.mb.mbxStatus);
3168	mempool_free(element: mboxq, pool: phba->mbox_mem_pool);
3169	lpfc_vport_set_state(vport, new_state: FC_VPORT_FAILED);
3170	return;
3171	}
3172
3173	lpfc_initial_flogi(vport);
3174	mempool_free(element: mboxq, pool: phba->mbox_mem_pool);
3175	return;
3176	}
3177
3178	/**
3179	* lpfc_issue_init_vfi - Issue init_vfi mailbox command.
3180	* @vport: pointer to lpfc_vport data structure.
3181	*
3182	* This function issue a init_vfi mailbox command to initialize the VFI and
3183	* VPI for the physical port.
3184	*/
3185	void
3186	lpfc_issue_init_vfi(struct lpfc_vport *vport)
3187	{
3188	LPFC_MBOXQ_t *mboxq;
3189	int rc;
3190	struct lpfc_hba *phba = vport->phba;
3191
3192	mboxq = mempool_alloc(pool: phba->mbox_mem_pool, GFP_KERNEL);
3193	if (!mboxq) {
3194	lpfc_printf_vlog(vport, KERN_ERR,
3195	LOG_TRACE_EVENT, "2892 Failed to allocate "
3196	"init_vfi mailbox\n");
3197	return;
3198	}
3199	lpfc_init_vfi(mboxq, vport);
3200	mboxq->mbox_cmpl = lpfc_init_vfi_cmpl;
3201	rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_NOWAIT);
3202	if (rc == MBX_NOT_FINISHED) {
3203	lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
3204	"2893 Failed to issue init_vfi mailbox\n");
3205	mempool_free(element: mboxq, pool: vport->phba->mbox_mem_pool);
3206	}
3207	}
3208
3209	/**
3210	* lpfc_init_vpi_cmpl - Completion handler for init_vpi mbox command.
3211	* @phba: pointer to lpfc hba data structure.
3212	* @mboxq: pointer to mailbox data structure.
3213	*
3214	* This function handles completion of init vpi mailbox command.
3215	*/
3216	void
3217	lpfc_init_vpi_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
3218	{
3219	struct lpfc_vport *vport = mboxq->vport;
3220	struct lpfc_nodelist *ndlp;
3221	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3222
3223	if (mboxq->u.mb.mbxStatus) {
3224	lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
3225	"2609 Init VPI mailbox failed 0x%x\n",
3226	mboxq->u.mb.mbxStatus);
3227	mempool_free(element: mboxq, pool: phba->mbox_mem_pool);
3228	lpfc_vport_set_state(vport, new_state: FC_VPORT_FAILED);
3229	return;
3230	}
3231	spin_lock_irq(lock: shost->host_lock);
3232	vport->fc_flag &= ~FC_VPORT_NEEDS_INIT_VPI;
3233	spin_unlock_irq(lock: shost->host_lock);
3234
3235	/* If this port is physical port or FDISC is done, do reg_vpi */
3236	if ((phba->pport == vport) || (vport->port_state == LPFC_FDISC)) {
3237	ndlp = lpfc_findnode_did(vport, Fabric_DID);
3238	if (!ndlp)
3239	lpfc_printf_vlog(vport, KERN_ERR,
3240	LOG_TRACE_EVENT,
3241	"2731 Cannot find fabric "
3242	"controller node\n");
3243	else
3244	lpfc_register_new_vport(phba, vport, ndlp);
3245	mempool_free(element: mboxq, pool: phba->mbox_mem_pool);
3246	return;
3247	}
3248
3249	if (phba->link_flag & LS_NPIV_FAB_SUPPORTED)
3250	lpfc_initial_fdisc(vport);
3251	else {
3252	lpfc_vport_set_state(vport, new_state: FC_VPORT_NO_FABRIC_SUPP);
3253	lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
3254	"2606 No NPIV Fabric support\n");
3255	}
3256	mempool_free(element: mboxq, pool: phba->mbox_mem_pool);
3257	return;
3258	}
3259
3260	/**
3261	* lpfc_issue_init_vpi - Issue init_vpi mailbox command.
3262	* @vport: pointer to lpfc_vport data structure.
3263	*
3264	* This function issue a init_vpi mailbox command to initialize
3265	* VPI for the vport.
3266	*/
3267	void
3268	lpfc_issue_init_vpi(struct lpfc_vport *vport)
3269	{
3270	LPFC_MBOXQ_t *mboxq;
3271	int rc, vpi;
3272
3273	if ((vport->port_type != LPFC_PHYSICAL_PORT) && (!vport->vpi)) {
3274	vpi = lpfc_alloc_vpi(phba: vport->phba);
3275	if (!vpi) {
3276	lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
3277	"3303 Failed to obtain vport vpi\n");
3278	lpfc_vport_set_state(vport, new_state: FC_VPORT_FAILED);
3279	return;
3280	}
3281	vport->vpi = vpi;
3282	}
3283
3284	mboxq = mempool_alloc(pool: vport->phba->mbox_mem_pool, GFP_KERNEL);
3285	if (!mboxq) {
3286	lpfc_printf_vlog(vport, KERN_ERR,
3287	LOG_TRACE_EVENT, "2607 Failed to allocate "
3288	"init_vpi mailbox\n");
3289	return;
3290	}
3291	lpfc_init_vpi(vport->phba, mboxq, vport->vpi);
3292	mboxq->vport = vport;
3293	mboxq->mbox_cmpl = lpfc_init_vpi_cmpl;
3294	rc = lpfc_sli_issue_mbox(vport->phba, mboxq, MBX_NOWAIT);
3295	if (rc == MBX_NOT_FINISHED) {
3296	lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
3297	"2608 Failed to issue init_vpi mailbox\n");
3298	mempool_free(element: mboxq, pool: vport->phba->mbox_mem_pool);
3299	}
3300	}
3301
3302	/**
3303	* lpfc_start_fdiscs - send fdiscs for each vports on this port.
3304	* @phba: pointer to lpfc hba data structure.
3305	*
3306	* This function loops through the list of vports on the @phba and issues an
3307	* FDISC if possible.
3308	*/
3309	void
3310	lpfc_start_fdiscs(struct lpfc_hba *phba)
3311	{
3312	struct lpfc_vport **vports;
3313	int i;
3314
3315	vports = lpfc_create_vport_work_array(phba);
3316	if (vports != NULL) {
3317	for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
3318	if (vports[i]->port_type == LPFC_PHYSICAL_PORT)
3319	continue;
3320	/* There are no vpi for this vport */
3321	if (vports[i]->vpi > phba->max_vpi) {
3322	lpfc_vport_set_state(vport: vports[i],
3323	new_state: FC_VPORT_FAILED);
3324	continue;
3325	}
3326	if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
3327	lpfc_vport_set_state(vport: vports[i],
3328	new_state: FC_VPORT_LINKDOWN);
3329	continue;
3330	}
3331	if (vports[i]->fc_flag & FC_VPORT_NEEDS_INIT_VPI) {
3332	lpfc_issue_init_vpi(vport: vports[i]);
3333	continue;
3334	}
3335	if (phba->link_flag & LS_NPIV_FAB_SUPPORTED)
3336	lpfc_initial_fdisc(vports[i]);
3337	else {
3338	lpfc_vport_set_state(vport: vports[i],
3339	new_state: FC_VPORT_NO_FABRIC_SUPP);
3340	lpfc_printf_vlog(vports[i], KERN_ERR,
3341	LOG_TRACE_EVENT,
3342	"0259 No NPIV "
3343	"Fabric support\n");
3344	}
3345	}
3346	}
3347	lpfc_destroy_vport_work_array(phba, vports);
3348	}
3349
3350	void
3351	lpfc_mbx_cmpl_reg_vfi(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
3352	{
3353	struct lpfc_vport *vport = mboxq->vport;
3354	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3355
3356	/*
3357	* VFI not supported for interface type 0, so ignore any mailbox
3358	* error (except VFI in use) and continue with the discovery.
3359	*/
3360	if (mboxq->u.mb.mbxStatus &&
3361	(bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) !=
3362	LPFC_SLI_INTF_IF_TYPE_0) &&
3363	mboxq->u.mb.mbxStatus != MBX_VFI_IN_USE) {
3364	lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
3365	"2018 REG_VFI mbxStatus error x%x "
3366	"HBA state x%x\n",
3367	mboxq->u.mb.mbxStatus, vport->port_state);
3368	if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
3369	/* FLOGI failed, use loop map to make discovery list */
3370	lpfc_disc_list_loopmap(vport);
3371	/* Start discovery */
3372	lpfc_disc_start(vport);
3373	goto out_free_mem;
3374	}
3375	lpfc_vport_set_state(vport, new_state: FC_VPORT_FAILED);
3376	goto out_free_mem;
3377	}
3378
3379	/* If the VFI is already registered, there is nothing else to do
3380	* Unless this was a VFI update and we are in PT2PT mode, then
3381	* we should drop through to set the port state to ready.
3382	*/
3383	if (vport->fc_flag & FC_VFI_REGISTERED)
3384	if (!(phba->sli_rev == LPFC_SLI_REV4 &&
3385	vport->fc_flag & FC_PT2PT))
3386	goto out_free_mem;
3387
3388	/* The VPI is implicitly registered when the VFI is registered */
3389	spin_lock_irq(lock: shost->host_lock);
3390	vport->vpi_state |= LPFC_VPI_REGISTERED;
3391	vport->fc_flag |= FC_VFI_REGISTERED;
3392	vport->fc_flag &= ~FC_VPORT_NEEDS_REG_VPI;
3393	vport->fc_flag &= ~FC_VPORT_NEEDS_INIT_VPI;
3394	spin_unlock_irq(lock: shost->host_lock);
3395
3396	/* In case SLI4 FC loopback test, we are ready */
3397	if ((phba->sli_rev == LPFC_SLI_REV4) &&
3398	(phba->link_flag & LS_LOOPBACK_MODE)) {
3399	phba->link_state = LPFC_HBA_READY;
3400	goto out_free_mem;
3401	}
3402
3403	lpfc_printf_vlog(vport, KERN_INFO, LOG_SLI,
3404	"3313 cmpl reg vfi port_state:%x fc_flag:%x myDid:%x "
3405	"alpacnt:%d LinkState:%x topology:%x\n",
3406	vport->port_state, vport->fc_flag, vport->fc_myDID,
3407	vport->phba->alpa_map[0],
3408	phba->link_state, phba->fc_topology);
3409
3410	if (vport->port_state == LPFC_FABRIC_CFG_LINK) {
3411	/*
3412	* For private loop or for NPort pt2pt,
3413	* just start discovery and we are done.
3414	*/
3415	if ((vport->fc_flag & FC_PT2PT) ||
3416	((phba->fc_topology == LPFC_TOPOLOGY_LOOP) &&
3417	!(vport->fc_flag & FC_PUBLIC_LOOP))) {
3418
3419	/* Use loop map to make discovery list */
3420	lpfc_disc_list_loopmap(vport);
3421	/* Start discovery */
3422	if (vport->fc_flag & FC_PT2PT)
3423	vport->port_state = LPFC_VPORT_READY;
3424	else
3425	lpfc_disc_start(vport);
3426	} else {
3427	lpfc_start_fdiscs(phba);
3428	lpfc_do_scr_ns_plogi(phba, vport);
3429	}
3430	}
3431
3432	out_free_mem:
3433	lpfc_mbox_rsrc_cleanup(phba, mbox: mboxq, locked: MBOX_THD_UNLOCKED);
3434	}
3435
3436	static void
3437	lpfc_mbx_cmpl_read_sparam(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
3438	{
3439	MAILBOX_t *mb = &pmb->u.mb;
3440	struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *)pmb->ctx_buf;
3441	struct lpfc_vport *vport = pmb->vport;
3442	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3443	struct serv_parm *sp = &vport->fc_sparam;
3444	uint32_t ed_tov;
3445
3446	/* Check for error */
3447	if (mb->mbxStatus) {
3448	/* READ_SPARAM mbox error <mbxStatus> state <hba_state> */
3449	lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
3450	"0319 READ_SPARAM mbxStatus error x%x "
3451	"hba state x%x>\n",
3452	mb->mbxStatus, vport->port_state);
3453	lpfc_linkdown(phba);
3454	goto out;
3455	}
3456
3457	memcpy((uint8_t *) &vport->fc_sparam, (uint8_t *) mp->virt,
3458	sizeof (struct serv_parm));
3459
3460	ed_tov = be32_to_cpu(sp->cmn.e_d_tov);
3461	if (sp->cmn.edtovResolution) /* E_D_TOV ticks are in nanoseconds */
3462	ed_tov = (ed_tov + 999999) / 1000000;
3463
3464	phba->fc_edtov = ed_tov;
3465	phba->fc_ratov = (2 * ed_tov) / 1000;
3466	if (phba->fc_ratov < FF_DEF_RATOV) {
3467	/* RA_TOV should be atleast 10sec for initial flogi */
3468	phba->fc_ratov = FF_DEF_RATOV;
3469	}
3470
3471	lpfc_update_vport_wwn(vport);
3472	fc_host_port_name(shost) = wwn_to_u64(wwn: vport->fc_portname.u.wwn);
3473	if (vport->port_type == LPFC_PHYSICAL_PORT) {
3474	memcpy(&phba->wwnn, &vport->fc_nodename, sizeof(phba->wwnn));
3475	memcpy(&phba->wwpn, &vport->fc_portname, sizeof(phba->wwnn));
3476	}
3477
3478	lpfc_mbox_rsrc_cleanup(phba, mbox: pmb, locked: MBOX_THD_UNLOCKED);
3479
3480	/* Check if sending the FLOGI is being deferred to after we get
3481	* up to date CSPs from MBX_READ_SPARAM.
3482	*/
3483	if (phba->hba_flag & HBA_DEFER_FLOGI) {
3484	lpfc_initial_flogi(vport);
3485	phba->hba_flag &= ~HBA_DEFER_FLOGI;
3486	}
3487	return;
3488
3489	out:
3490	lpfc_mbox_rsrc_cleanup(phba, mbox: pmb, locked: MBOX_THD_UNLOCKED);
3491	lpfc_issue_clear_la(phba, vport);
3492	}
3493
3494	static void
3495	lpfc_mbx_process_link_up(struct lpfc_hba *phba, struct lpfc_mbx_read_top *la)
3496	{
3497	struct lpfc_vport *vport = phba->pport;
3498	LPFC_MBOXQ_t *sparam_mbox, *cfglink_mbox = NULL;
3499	struct Scsi_Host *shost;
3500	int i;
3501	int rc;
3502	struct fcf_record *fcf_record;
3503	uint32_t fc_flags = 0;
3504	unsigned long iflags;
3505
3506	spin_lock_irqsave(&phba->hbalock, iflags);
3507	phba->fc_linkspeed = bf_get(lpfc_mbx_read_top_link_spd, la);
3508
3509	if (!(phba->hba_flag & HBA_FCOE_MODE)) {
3510	switch (bf_get(lpfc_mbx_read_top_link_spd, la)) {
3511	case LPFC_LINK_SPEED_1GHZ:
3512	case LPFC_LINK_SPEED_2GHZ:
3513	case LPFC_LINK_SPEED_4GHZ:
3514	case LPFC_LINK_SPEED_8GHZ:
3515	case LPFC_LINK_SPEED_10GHZ:
3516	case LPFC_LINK_SPEED_16GHZ:
3517	case LPFC_LINK_SPEED_32GHZ:
3518	case LPFC_LINK_SPEED_64GHZ:
3519	case LPFC_LINK_SPEED_128GHZ:
3520	case LPFC_LINK_SPEED_256GHZ:
3521	break;
3522	default:
3523	phba->fc_linkspeed = LPFC_LINK_SPEED_UNKNOWN;
3524	break;
3525	}
3526	}
3527
3528	if (phba->fc_topology &&
3529	phba->fc_topology != bf_get(lpfc_mbx_read_top_topology, la)) {
3530	lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
3531	"3314 Toplogy changed was 0x%x is 0x%x\n",
3532	phba->fc_topology,
3533	bf_get(lpfc_mbx_read_top_topology, la));
3534	phba->fc_topology_changed = 1;
3535	}
3536
3537	phba->fc_topology = bf_get(lpfc_mbx_read_top_topology, la);
3538	phba->link_flag &= ~(LS_NPIV_FAB_SUPPORTED | LS_CT_VEN_RPA);
3539
3540	shost = lpfc_shost_from_vport(vport);
3541	if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
3542	phba->sli3_options &= ~LPFC_SLI3_NPIV_ENABLED;
3543
3544	/* if npiv is enabled and this adapter supports npiv log
3545	* a message that npiv is not supported in this topology
3546	*/
3547	if (phba->cfg_enable_npiv && phba->max_vpi)
3548	lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
3549	"1309 Link Up Event npiv not supported in loop "
3550	"topology\n");
3551	/* Get Loop Map information */
3552	if (bf_get(lpfc_mbx_read_top_il, la))
3553	fc_flags |= FC_LBIT;
3554
3555	vport->fc_myDID = bf_get(lpfc_mbx_read_top_alpa_granted, la);
3556	i = la->lilpBde64.tus.f.bdeSize;
3557
3558	if (i == 0) {
3559	phba->alpa_map[0] = 0;
3560	} else {
3561	if (vport->cfg_log_verbose & LOG_LINK_EVENT) {
3562	int numalpa, j, k;
3563	union {
3564	uint8_t pamap[16];
3565	struct {
3566	uint32_t wd1;
3567	uint32_t wd2;
3568	uint32_t wd3;
3569	uint32_t wd4;
3570	} pa;
3571	} un;
3572	numalpa = phba->alpa_map[0];
3573	j = 0;
3574	while (j < numalpa) {
3575	memset(un.pamap, 0, 16);
3576	for (k = 1; j < numalpa; k++) {
3577	un.pamap[k - 1] =
3578	phba->alpa_map[j + 1];
3579	j++;
3580	if (k == 16)
3581	break;
3582	}
3583	/* Link Up Event ALPA map */
3584	lpfc_printf_log(phba,
3585	KERN_WARNING,
3586	LOG_LINK_EVENT,
3587	"1304 Link Up Event "
3588	"ALPA map Data: x%x "
3589	"x%x x%x x%x\n",
3590	un.pa.wd1, un.pa.wd2,
3591	un.pa.wd3, un.pa.wd4);
3592	}
3593	}
3594	}
3595	} else {
3596	if (!(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)) {
3597	if (phba->max_vpi && phba->cfg_enable_npiv &&
3598	(phba->sli_rev >= LPFC_SLI_REV3))
3599	phba->sli3_options |= LPFC_SLI3_NPIV_ENABLED;
3600	}
3601	vport->fc_myDID = phba->fc_pref_DID;
3602	fc_flags |= FC_LBIT;
3603	}
3604	spin_unlock_irqrestore(lock: &phba->hbalock, flags: iflags);
3605
3606	if (fc_flags) {
3607	spin_lock_irqsave(shost->host_lock, iflags);
3608	vport->fc_flag |= fc_flags;
3609	spin_unlock_irqrestore(lock: shost->host_lock, flags: iflags);
3610	}
3611
3612	lpfc_linkup(phba);
3613	sparam_mbox = NULL;
3614
3615	sparam_mbox = mempool_alloc(pool: phba->mbox_mem_pool, GFP_KERNEL);
3616	if (!sparam_mbox)
3617	goto out;
3618
3619	rc = lpfc_read_sparam(phba, sparam_mbox, 0);
3620	if (rc) {
3621	mempool_free(element: sparam_mbox, pool: phba->mbox_mem_pool);
3622	goto out;
3623	}
3624	sparam_mbox->vport = vport;
3625	sparam_mbox->mbox_cmpl = lpfc_mbx_cmpl_read_sparam;
3626	rc = lpfc_sli_issue_mbox(phba, sparam_mbox, MBX_NOWAIT);
3627	if (rc == MBX_NOT_FINISHED) {
3628	lpfc_mbox_rsrc_cleanup(phba, mbox: sparam_mbox, locked: MBOX_THD_UNLOCKED);
3629	goto out;
3630	}
3631
3632	if (!(phba->hba_flag & HBA_FCOE_MODE)) {
3633	cfglink_mbox = mempool_alloc(pool: phba->mbox_mem_pool, GFP_KERNEL);
3634	if (!cfglink_mbox)
3635	goto out;
3636	vport->port_state = LPFC_LOCAL_CFG_LINK;
3637	lpfc_config_link(phba, cfglink_mbox);
3638	cfglink_mbox->vport = vport;
3639	cfglink_mbox->mbox_cmpl = lpfc_mbx_cmpl_local_config_link;
3640	rc = lpfc_sli_issue_mbox(phba, cfglink_mbox, MBX_NOWAIT);
3641	if (rc == MBX_NOT_FINISHED) {
3642	mempool_free(element: cfglink_mbox, pool: phba->mbox_mem_pool);
3643	goto out;
3644	}
3645	} else {
3646	vport->port_state = LPFC_VPORT_UNKNOWN;
3647	/*
3648	* Add the driver's default FCF record at FCF index 0 now. This
3649	* is phase 1 implementation that support FCF index 0 and driver
3650	* defaults.
3651	*/
3652	if (!(phba->hba_flag & HBA_FIP_SUPPORT)) {
3653	fcf_record = kzalloc(size: sizeof(struct fcf_record),
3654	GFP_KERNEL);
3655	if (unlikely(!fcf_record)) {
3656	lpfc_printf_log(phba, KERN_ERR,
3657	LOG_TRACE_EVENT,
3658	"2554 Could not allocate memory for "
3659	"fcf record\n");
3660	rc = -ENODEV;
3661	goto out;
3662	}
3663
3664	lpfc_sli4_build_dflt_fcf_record(phba, fcf_record,
3665	LPFC_FCOE_FCF_DEF_INDEX);
3666	rc = lpfc_sli4_add_fcf_record(phba, fcf_record);
3667	if (unlikely(rc)) {
3668	lpfc_printf_log(phba, KERN_ERR,
3669	LOG_TRACE_EVENT,
3670	"2013 Could not manually add FCF "
3671	"record 0, status %d\n", rc);
3672	rc = -ENODEV;
3673	kfree(objp: fcf_record);
3674	goto out;
3675	}
3676	kfree(objp: fcf_record);
3677	}
3678	/*
3679	* The driver is expected to do FIP/FCF. Call the port
3680	* and get the FCF Table.
3681	*/
3682	spin_lock_irqsave(&phba->hbalock, iflags);
3683	if (phba->hba_flag & FCF_TS_INPROG) {
3684	spin_unlock_irqrestore(lock: &phba->hbalock, flags: iflags);
3685	return;
3686	}
3687	/* This is the initial FCF discovery scan */
3688	phba->fcf.fcf_flag |= FCF_INIT_DISC;
3689	spin_unlock_irqrestore(lock: &phba->hbalock, flags: iflags);
3690	lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY,
3691	"2778 Start FCF table scan at linkup\n");
3692	rc = lpfc_sli4_fcf_scan_read_fcf_rec(phba,
3693	LPFC_FCOE_FCF_GET_FIRST);
3694	if (rc) {
3695	spin_lock_irqsave(&phba->hbalock, iflags);
3696	phba->fcf.fcf_flag &= ~FCF_INIT_DISC;
3697	spin_unlock_irqrestore(lock: &phba->hbalock, flags: iflags);
3698	goto out;
3699	}
3700	/* Reset FCF roundrobin bmask for new discovery */
3701	lpfc_sli4_clear_fcf_rr_bmask(phba);
3702	}
3703
3704	/* Prepare for LINK up registrations */
3705	memset(phba->os_host_name, 0, sizeof(phba->os_host_name));
3706	scnprintf(buf: phba->os_host_name, size: sizeof(phba->os_host_name), fmt: "%s",
3707	init_utsname()->nodename);
3708	return;
3709	out:
3710	lpfc_vport_set_state(vport, new_state: FC_VPORT_FAILED);
3711	lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
3712	"0263 Discovery Mailbox error: state: 0x%x : x%px x%px\n",
3713	vport->port_state, sparam_mbox, cfglink_mbox);
3714	lpfc_issue_clear_la(phba, vport);
3715	return;
3716	}
3717
3718	static void
3719	lpfc_enable_la(struct lpfc_hba *phba)
3720	{
3721	uint32_t control;
3722	struct lpfc_sli *psli = &phba->sli;
3723	spin_lock_irq(lock: &phba->hbalock);
3724	psli->sli_flag |= LPFC_PROCESS_LA;
3725	if (phba->sli_rev <= LPFC_SLI_REV3) {
3726	control = readl(addr: phba->HCregaddr);
3727	control |= HC_LAINT_ENA;
3728	writel(val: control, addr: phba->HCregaddr);
3729	readl(addr: phba->HCregaddr); /* flush */
3730	}
3731	spin_unlock_irq(lock: &phba->hbalock);
3732	}
3733
3734	static void
3735	lpfc_mbx_issue_link_down(struct lpfc_hba *phba)
3736	{
3737	lpfc_linkdown(phba);
3738	lpfc_enable_la(phba);
3739	lpfc_unregister_unused_fcf(phba);
3740	/* turn on Link Attention interrupts - no CLEAR_LA needed */
3741	}
3742
3743
3744	/*
3745	* This routine handles processing a READ_TOPOLOGY mailbox
3746	* command upon completion. It is setup in the LPFC_MBOXQ
3747	* as the completion routine when the command is
3748	* handed off to the SLI layer. SLI4 only.
3749	*/
3750	void
3751	lpfc_mbx_cmpl_read_topology(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
3752	{
3753	struct lpfc_vport *vport = pmb->vport;
3754	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3755	struct lpfc_mbx_read_top *la;
3756	struct lpfc_sli_ring *pring;
3757	MAILBOX_t *mb = &pmb->u.mb;
3758	struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *)(pmb->ctx_buf);
3759	uint8_t attn_type;
3760	unsigned long iflags;
3761
3762	/* Unblock ELS traffic */
3763	pring = lpfc_phba_elsring(phba);
3764	if (pring)
3765	pring->flag &= ~LPFC_STOP_IOCB_EVENT;
3766
3767	/* Check for error */
3768	if (mb->mbxStatus) {
3769	lpfc_printf_log(phba, KERN_INFO, LOG_LINK_EVENT,
3770	"1307 READ_LA mbox error x%x state x%x\n",
3771	mb->mbxStatus, vport->port_state);
3772	lpfc_mbx_issue_link_down(phba);
3773	phba->link_state = LPFC_HBA_ERROR;
3774	goto lpfc_mbx_cmpl_read_topology_free_mbuf;
3775	}
3776
3777	la = (struct lpfc_mbx_read_top *) &pmb->u.mb.un.varReadTop;
3778	attn_type = bf_get(lpfc_mbx_read_top_att_type, la);
3779
3780	memcpy(&phba->alpa_map[0], mp->virt, 128);
3781
3782	spin_lock_irqsave(shost->host_lock, iflags);
3783	if (bf_get(lpfc_mbx_read_top_pb, la))
3784	vport->fc_flag |= FC_BYPASSED_MODE;
3785	else
3786	vport->fc_flag &= ~FC_BYPASSED_MODE;
3787	spin_unlock_irqrestore(lock: shost->host_lock, flags: iflags);
3788
3789	if (phba->fc_eventTag <= la->eventTag) {
3790	phba->fc_stat.LinkMultiEvent++;
3791	if (attn_type == LPFC_ATT_LINK_UP)
3792	if (phba->fc_eventTag != 0)
3793	lpfc_linkdown(phba);
3794	}
3795
3796	phba->fc_eventTag = la->eventTag;
3797	phba->link_events++;
3798	if (attn_type == LPFC_ATT_LINK_UP) {
3799	phba->fc_stat.LinkUp++;
3800	if (phba->link_flag & LS_LOOPBACK_MODE) {
3801	lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
3802	"1306 Link Up Event in loop back mode "
3803	"x%x received Data: x%x x%x x%x x%x\n",
3804	la->eventTag, phba->fc_eventTag,
3805	bf_get(lpfc_mbx_read_top_alpa_granted,
3806	la),
3807	bf_get(lpfc_mbx_read_top_link_spd, la),
3808	phba->alpa_map[0]);
3809	} else {
3810	lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
3811	"1303 Link Up Event x%x received "
3812	"Data: x%x x%x x%x x%x x%x\n",
3813	la->eventTag, phba->fc_eventTag,
3814	bf_get(lpfc_mbx_read_top_alpa_granted,
3815	la),
3816	bf_get(lpfc_mbx_read_top_link_spd, la),
3817	phba->alpa_map[0],
3818	bf_get(lpfc_mbx_read_top_fa, la));
3819	}
3820	lpfc_mbx_process_link_up(phba, la);
3821
3822	if (phba->cmf_active_mode != LPFC_CFG_OFF)
3823	lpfc_cmf_signal_init(phba);
3824
3825	if (phba->lmt & LMT_64Gb)
3826	lpfc_read_lds_params(phba);
3827
3828	} else if (attn_type == LPFC_ATT_LINK_DOWN ||
3829	attn_type == LPFC_ATT_UNEXP_WWPN) {
3830	phba->fc_stat.LinkDown++;
3831	if (phba->link_flag & LS_LOOPBACK_MODE)
3832	lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
3833	"1308 Link Down Event in loop back mode "
3834	"x%x received "
3835	"Data: x%x x%x x%x\n",
3836	la->eventTag, phba->fc_eventTag,
3837	phba->pport->port_state, vport->fc_flag);
3838	else if (attn_type == LPFC_ATT_UNEXP_WWPN)
3839	lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
3840	"1313 Link Down Unexpected FA WWPN Event x%x "
3841	"received Data: x%x x%x x%x x%x\n",
3842	la->eventTag, phba->fc_eventTag,
3843	phba->pport->port_state, vport->fc_flag,
3844	bf_get(lpfc_mbx_read_top_fa, la));
3845	else
3846	lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
3847	"1305 Link Down Event x%x received "
3848	"Data: x%x x%x x%x x%x\n",
3849	la->eventTag, phba->fc_eventTag,
3850	phba->pport->port_state, vport->fc_flag,
3851	bf_get(lpfc_mbx_read_top_fa, la));
3852	lpfc_mbx_issue_link_down(phba);
3853	}
3854
3855	if ((phba->sli_rev < LPFC_SLI_REV4) &&
3856	bf_get(lpfc_mbx_read_top_fa, la))
3857	lpfc_printf_log(phba, KERN_INFO, LOG_LINK_EVENT,
3858	"1311 fa %d\n",
3859	bf_get(lpfc_mbx_read_top_fa, la));
3860
3861	lpfc_mbx_cmpl_read_topology_free_mbuf:
3862	lpfc_mbox_rsrc_cleanup(phba, mbox: pmb, locked: MBOX_THD_UNLOCKED);
3863	}
3864
3865	/*
3866	* This routine handles processing a REG_LOGIN mailbox
3867	* command upon completion. It is setup in the LPFC_MBOXQ
3868	* as the completion routine when the command is
3869	* handed off to the SLI layer.
3870	*/
3871	void
3872	lpfc_mbx_cmpl_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
3873	{
3874	struct lpfc_vport *vport = pmb->vport;
3875	struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *)pmb->ctx_buf;
3876	struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *)pmb->ctx_ndlp;
3877
3878	/* The driver calls the state machine with the pmb pointer
3879	* but wants to make sure a stale ctx_buf isn't acted on.
3880	* The ctx_buf is restored later and cleaned up.
3881	*/
3882	pmb->ctx_buf = NULL;
3883	pmb->ctx_ndlp = NULL;
3884
3885	lpfc_printf_vlog(vport, KERN_INFO, LOG_SLI | LOG_NODE | LOG_DISCOVERY,
3886	"0002 rpi:%x DID:%x flg:%x %d x%px\n",
3887	ndlp->nlp_rpi, ndlp->nlp_DID, ndlp->nlp_flag,
3888	kref_read(&ndlp->kref),
3889	ndlp);
3890	if (ndlp->nlp_flag & NLP_REG_LOGIN_SEND)
3891	ndlp->nlp_flag &= ~NLP_REG_LOGIN_SEND;
3892
3893	if (ndlp->nlp_flag & NLP_IGNR_REG_CMPL ||
3894	ndlp->nlp_state != NLP_STE_REG_LOGIN_ISSUE) {
3895	/* We rcvd a rscn after issuing this
3896	* mbox reg login, we may have cycled
3897	* back through the state and be
3898	* back at reg login state so this
3899	* mbox needs to be ignored becase
3900	* there is another reg login in
3901	* process.
3902	*/
3903	spin_lock_irq(lock: &ndlp->lock);
3904	ndlp->nlp_flag &= ~NLP_IGNR_REG_CMPL;
3905	spin_unlock_irq(lock: &ndlp->lock);
3906
3907	/*
3908	* We cannot leave the RPI registered because
3909	* if we go thru discovery again for this ndlp
3910	* a subsequent REG_RPI will fail.
3911	*/
3912	ndlp->nlp_flag |= NLP_RPI_REGISTERED;
3913	lpfc_unreg_rpi(vport, ndlp);
3914	}
3915
3916	/* Call state machine */
3917	lpfc_disc_state_machine(vport, ndlp, pmb, NLP_EVT_CMPL_REG_LOGIN);
3918	pmb->ctx_buf = mp;
3919	lpfc_mbox_rsrc_cleanup(phba, mbox: pmb, locked: MBOX_THD_UNLOCKED);
3920
3921	/* decrement the node reference count held for this callback
3922	* function.
3923	*/
3924	lpfc_nlp_put(ndlp);
3925
3926	return;
3927	}
3928
3929	static void
3930	lpfc_mbx_cmpl_unreg_vpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
3931	{
3932	MAILBOX_t *mb = &pmb->u.mb;
3933	struct lpfc_vport *vport = pmb->vport;
3934	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3935
3936	switch (mb->mbxStatus) {
3937	case 0x0011:
3938	case 0x0020:
3939	lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
3940	"0911 cmpl_unreg_vpi, mb status = 0x%x\n",
3941	mb->mbxStatus);
3942	break;
3943	/* If VPI is busy, reset the HBA */
3944	case 0x9700:
3945	lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
3946	"2798 Unreg_vpi failed vpi 0x%x, mb status = 0x%x\n",
3947	vport->vpi, mb->mbxStatus);
3948	if (!(phba->pport->load_flag & FC_UNLOADING))
3949	lpfc_workq_post_event(phba, NULL, NULL,
3950	evt: LPFC_EVT_RESET_HBA);
3951	}
3952	spin_lock_irq(lock: shost->host_lock);
3953	vport->vpi_state &= ~LPFC_VPI_REGISTERED;
3954	vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
3955	spin_unlock_irq(lock: shost->host_lock);
3956	mempool_free(element: pmb, pool: phba->mbox_mem_pool);
3957	lpfc_cleanup_vports_rrqs(vport, NULL);
3958	/*
3959	* This shost reference might have been taken at the beginning of
3960	* lpfc_vport_delete()
3961	*/
3962	if ((vport->load_flag & FC_UNLOADING) && (vport != phba->pport))
3963	scsi_host_put(t: shost);
3964	}
3965
3966	int
3967	lpfc_mbx_unreg_vpi(struct lpfc_vport *vport)
3968	{
3969	struct lpfc_hba *phba = vport->phba;
3970	LPFC_MBOXQ_t *mbox;
3971	int rc;
3972
3973	mbox = mempool_alloc(pool: phba->mbox_mem_pool, GFP_KERNEL);
3974	if (!mbox)
3975	return 1;
3976
3977	lpfc_unreg_vpi(phba, vport->vpi, mbox);
3978	mbox->vport = vport;
3979	mbox->mbox_cmpl = lpfc_mbx_cmpl_unreg_vpi;
3980	rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
3981	if (rc == MBX_NOT_FINISHED) {
3982	lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
3983	"1800 Could not issue unreg_vpi\n");
3984	mempool_free(element: mbox, pool: phba->mbox_mem_pool);
3985	return rc;
3986	}
3987	return 0;
3988	}
3989
3990	static void
3991	lpfc_mbx_cmpl_reg_vpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
3992	{
3993	struct lpfc_vport *vport = pmb->vport;
3994	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3995	MAILBOX_t *mb = &pmb->u.mb;
3996
3997	switch (mb->mbxStatus) {
3998	case 0x0011:
3999	case 0x9601:
4000	case 0x9602:
4001	lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
4002	"0912 cmpl_reg_vpi, mb status = 0x%x\n",
4003	mb->mbxStatus);
4004	lpfc_vport_set_state(vport, new_state: FC_VPORT_FAILED);
4005	spin_lock_irq(lock: shost->host_lock);
4006	vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP);
4007	spin_unlock_irq(lock: shost->host_lock);
4008	vport->fc_myDID = 0;
4009
4010	if ((vport->cfg_enable_fc4_type == LPFC_ENABLE_BOTH) ||
4011	(vport->cfg_enable_fc4_type == LPFC_ENABLE_NVME)) {
4012	if (phba->nvmet_support)
4013	lpfc_nvmet_update_targetport(phba);
4014	else
4015	lpfc_nvme_update_localport(vport);
4016	}
4017	goto out;
4018	}
4019
4020	spin_lock_irq(lock: shost->host_lock);
4021	vport->vpi_state |= LPFC_VPI_REGISTERED;
4022	vport->fc_flag &= ~FC_VPORT_NEEDS_REG_VPI;
4023	spin_unlock_irq(lock: shost->host_lock);
4024	vport->num_disc_nodes = 0;
4025	/* go thru NPR list and issue ELS PLOGIs */
4026	if (vport->fc_npr_cnt)
4027	lpfc_els_disc_plogi(vport);
4028
4029	if (!vport->num_disc_nodes) {
4030	spin_lock_irq(lock: shost->host_lock);
4031	vport->fc_flag &= ~FC_NDISC_ACTIVE;
4032	spin_unlock_irq(lock: shost->host_lock);
4033	lpfc_can_disctmo(vport);
4034	}
4035	vport->port_state = LPFC_VPORT_READY;
4036
4037	out:
4038	mempool_free(element: pmb, pool: phba->mbox_mem_pool);
4039	return;
4040	}
4041
4042	/**
4043	* lpfc_create_static_vport - Read HBA config region to create static vports.
4044	* @phba: pointer to lpfc hba data structure.
4045	*
4046	* This routine issue a DUMP mailbox command for config region 22 to get
4047	* the list of static vports to be created. The function create vports
4048	* based on the information returned from the HBA.
4049	**/
4050	void
4051	lpfc_create_static_vport(struct lpfc_hba *phba)
4052	{
4053	LPFC_MBOXQ_t *pmb = NULL;
4054	MAILBOX_t *mb;
4055	struct static_vport_info *vport_info;
4056	int mbx_wait_rc = 0, i;
4057	struct fc_vport_identifiers vport_id;
4058	struct fc_vport *new_fc_vport;
4059	struct Scsi_Host *shost;
4060	struct lpfc_vport *vport;
4061	uint16_t offset = 0;
4062	uint8_t *vport_buff;
4063	struct lpfc_dmabuf *mp;
4064	uint32_t byte_count = 0;
4065
4066	pmb = mempool_alloc(pool: phba->mbox_mem_pool, GFP_KERNEL);
4067	if (!pmb) {
4068	lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
4069	"0542 lpfc_create_static_vport failed to"
4070	" allocate mailbox memory\n");
4071	return;
4072	}
4073	memset(pmb, 0, sizeof(LPFC_MBOXQ_t));
4074	mb = &pmb->u.mb;
4075
4076	vport_info = kzalloc(size: sizeof(struct static_vport_info), GFP_KERNEL);
4077	if (!vport_info) {
4078	lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
4079	"0543 lpfc_create_static_vport failed to"
4080	" allocate vport_info\n");
4081	mempool_free(element: pmb, pool: phba->mbox_mem_pool);
4082	return;
4083	}
4084
4085	vport_buff = (uint8_t *) vport_info;
4086	do {
4087	/* While loop iteration forces a free dma buffer from
4088	* the previous loop because the mbox is reused and
4089	* the dump routine is a single-use construct.
4090	*/
4091	if (pmb->ctx_buf) {
4092	mp = (struct lpfc_dmabuf *)pmb->ctx_buf;
4093	lpfc_mbuf_free(phba, mp->virt, mp->phys);
4094	kfree(objp: mp);
4095	pmb->ctx_buf = NULL;
4096	}
4097	if (lpfc_dump_static_vport(phba, pmb, offset))
4098	goto out;
4099
4100	pmb->vport = phba->pport;
4101	mbx_wait_rc = lpfc_sli_issue_mbox_wait(phba, pmb,
4102	LPFC_MBOX_TMO);
4103
4104	if ((mbx_wait_rc != MBX_SUCCESS) || mb->mbxStatus) {
4105	lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
4106	"0544 lpfc_create_static_vport failed to"
4107	" issue dump mailbox command ret 0x%x "
4108	"status 0x%x\n",
4109	mbx_wait_rc, mb->mbxStatus);
4110	goto out;
4111	}
4112
4113	if (phba->sli_rev == LPFC_SLI_REV4) {
4114	byte_count = pmb->u.mqe.un.mb_words[5];
4115	mp = (struct lpfc_dmabuf *)pmb->ctx_buf;
4116	if (byte_count > sizeof(struct static_vport_info) -
4117	offset)
4118	byte_count = sizeof(struct static_vport_info)
4119	- offset;
4120	memcpy(vport_buff + offset, mp->virt, byte_count);
4121	offset += byte_count;
4122	} else {
4123	if (mb->un.varDmp.word_cnt >
4124	sizeof(struct static_vport_info) - offset)
4125	mb->un.varDmp.word_cnt =
4126	sizeof(struct static_vport_info)
4127	- offset;
4128	byte_count = mb->un.varDmp.word_cnt;
4129	lpfc_sli_pcimem_bcopy(((uint8_t *)mb) + DMP_RSP_OFFSET,
4130	vport_buff + offset,
4131	byte_count);
4132
4133	offset += byte_count;
4134	}
4135
4136	} while (byte_count &&
4137	offset < sizeof(struct static_vport_info));
4138
4139
4140	if ((le32_to_cpu(vport_info->signature) != VPORT_INFO_SIG) ||
4141	((le32_to_cpu(vport_info->rev) & VPORT_INFO_REV_MASK)
4142	!= VPORT_INFO_REV)) {
4143	lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
4144	"0545 lpfc_create_static_vport bad"
4145	" information header 0x%x 0x%x\n",
4146	le32_to_cpu(vport_info->signature),
4147	le32_to_cpu(vport_info->rev) &
4148	VPORT_INFO_REV_MASK);
4149
4150	goto out;
4151	}
4152
4153	shost = lpfc_shost_from_vport(vport: phba->pport);
4154
4155	for (i = 0; i < MAX_STATIC_VPORT_COUNT; i++) {
4156	memset(&vport_id, 0, sizeof(vport_id));
4157	vport_id.port_name = wwn_to_u64(wwn: vport_info->vport_list[i].wwpn);
4158	vport_id.node_name = wwn_to_u64(wwn: vport_info->vport_list[i].wwnn);
4159	if (!vport_id.port_name || !vport_id.node_name)
4160	continue;
4161
4162	vport_id.roles = FC_PORT_ROLE_FCP_INITIATOR;
4163	vport_id.vport_type = FC_PORTTYPE_NPIV;
4164	vport_id.disable = false;
4165	new_fc_vport = fc_vport_create(shost, channel: 0, &vport_id);
4166
4167	if (!new_fc_vport) {
4168	lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
4169	"0546 lpfc_create_static_vport failed to"
4170	" create vport\n");
4171	continue;
4172	}
4173
4174	vport = *(struct lpfc_vport **)new_fc_vport->dd_data;
4175	vport->vport_flag |= STATIC_VPORT;
4176	}
4177
4178	out:
4179	kfree(objp: vport_info);
4180	if (mbx_wait_rc != MBX_TIMEOUT)
4181	lpfc_mbox_rsrc_cleanup(phba, mbox: pmb, locked: MBOX_THD_UNLOCKED);
4182	}
4183
4184	/*
4185	* This routine handles processing a Fabric REG_LOGIN mailbox
4186	* command upon completion. It is setup in the LPFC_MBOXQ
4187	* as the completion routine when the command is
4188	* handed off to the SLI layer.
4189	*/
4190	void
4191	lpfc_mbx_cmpl_fabric_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
4192	{
4193	struct lpfc_vport *vport = pmb->vport;
4194	MAILBOX_t *mb = &pmb->u.mb;
4195	struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *)pmb->ctx_ndlp;
4196	struct Scsi_Host *shost;
4197
4198	pmb->ctx_ndlp = NULL;
4199
4200	if (mb->mbxStatus) {
4201	lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
4202	"0258 Register Fabric login error: 0x%x\n",
4203	mb->mbxStatus);
4204	lpfc_mbox_rsrc_cleanup(phba, mbox: pmb, locked: MBOX_THD_UNLOCKED);
4205	if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
4206	/* FLOGI failed, use loop map to make discovery list */
4207	lpfc_disc_list_loopmap(vport);
4208
4209	/* Start discovery */
4210	lpfc_disc_start(vport);
4211	/* Decrement the reference count to ndlp after the
4212	* reference to the ndlp are done.
4213	*/
4214	lpfc_nlp_put(ndlp);
4215	return;
4216	}
4217
4218	lpfc_vport_set_state(vport, new_state: FC_VPORT_FAILED);
4219	/* Decrement the reference count to ndlp after the reference
4220	* to the ndlp are done.
4221	*/
4222	lpfc_nlp_put(ndlp);
4223	return;
4224	}
4225
4226	if (phba->sli_rev < LPFC_SLI_REV4)
4227	ndlp->nlp_rpi = mb->un.varWords[0];
4228	ndlp->nlp_flag |= NLP_RPI_REGISTERED;
4229	ndlp->nlp_type |= NLP_FABRIC;
4230	lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
4231
4232	if (vport->port_state == LPFC_FABRIC_CFG_LINK) {
4233	/* when physical port receive logo donot start
4234	* vport discovery */
4235	if (!(vport->fc_flag & FC_LOGO_RCVD_DID_CHNG))
4236	lpfc_start_fdiscs(phba);
4237	else {
4238	shost = lpfc_shost_from_vport(vport);
4239	spin_lock_irq(lock: shost->host_lock);
4240	vport->fc_flag &= ~FC_LOGO_RCVD_DID_CHNG ;
4241	spin_unlock_irq(lock: shost->host_lock);
4242	}
4243	lpfc_do_scr_ns_plogi(phba, vport);
4244	}
4245
4246	lpfc_mbox_rsrc_cleanup(phba, mbox: pmb, locked: MBOX_THD_UNLOCKED);
4247
4248	/* Drop the reference count from the mbox at the end after
4249	* all the current reference to the ndlp have been done.
4250	*/
4251	lpfc_nlp_put(ndlp);
4252	return;
4253	}
4254
4255	/*
4256	* This routine will issue a GID_FT for each FC4 Type supported
4257	* by the driver. ALL GID_FTs must complete before discovery is started.
4258	*/
4259	int
4260	lpfc_issue_gidft(struct lpfc_vport *vport)
4261	{
4262	/* Good status, issue CT Request to NameServer */
4263	if ((vport->cfg_enable_fc4_type == LPFC_ENABLE_BOTH) ||
4264	(vport->cfg_enable_fc4_type == LPFC_ENABLE_FCP)) {
4265	if (lpfc_ns_cmd(vport, SLI_CTNS_GID_FT, 0, SLI_CTPT_FCP)) {
4266	/* Cannot issue NameServer FCP Query, so finish up
4267	* discovery
4268	*/
4269	lpfc_printf_vlog(vport, KERN_ERR,
4270	LOG_TRACE_EVENT,
4271	"0604 %s FC TYPE %x %s\n",
4272	"Failed to issue GID_FT to ",
4273	FC_TYPE_FCP,
4274	"Finishing discovery.");
4275	return 0;
4276	}
4277	vport->gidft_inp++;
4278	}
4279
4280	if ((vport->cfg_enable_fc4_type == LPFC_ENABLE_BOTH) ||
4281	(vport->cfg_enable_fc4_type == LPFC_ENABLE_NVME)) {
4282	if (lpfc_ns_cmd(vport, SLI_CTNS_GID_FT, 0, SLI_CTPT_NVME)) {
4283	/* Cannot issue NameServer NVME Query, so finish up
4284	* discovery
4285	*/
4286	lpfc_printf_vlog(vport, KERN_ERR,
4287	LOG_TRACE_EVENT,
4288	"0605 %s FC_TYPE %x %s %d\n",
4289	"Failed to issue GID_FT to ",
4290	FC_TYPE_NVME,
4291	"Finishing discovery: gidftinp ",
4292	vport->gidft_inp);
4293	if (vport->gidft_inp == 0)
4294	return 0;
4295	} else
4296	vport->gidft_inp++;
4297	}
4298	return vport->gidft_inp;
4299	}
4300
4301	/**
4302	* lpfc_issue_gidpt - issue a GID_PT for all N_Ports
4303	* @vport: The virtual port for which this call is being executed.
4304	*
4305	* This routine will issue a GID_PT to get a list of all N_Ports
4306	*
4307	* Return value :
4308	* 0 - Failure to issue a GID_PT
4309	* 1 - GID_PT issued
4310	**/
4311	int
4312	lpfc_issue_gidpt(struct lpfc_vport *vport)
4313	{
4314	/* Good status, issue CT Request to NameServer */
4315	if (lpfc_ns_cmd(vport, SLI_CTNS_GID_PT, 0, GID_PT_N_PORT)) {
4316	/* Cannot issue NameServer FCP Query, so finish up
4317	* discovery
4318	*/
4319	lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
4320	"0606 %s Port TYPE %x %s\n",
4321	"Failed to issue GID_PT to ",
4322	GID_PT_N_PORT,
4323	"Finishing discovery.");
4324	return 0;
4325	}
4326	vport->gidft_inp++;
4327	return 1;
4328	}
4329
4330	/*
4331	* This routine handles processing a NameServer REG_LOGIN mailbox
4332	* command upon completion. It is setup in the LPFC_MBOXQ
4333	* as the completion routine when the command is
4334	* handed off to the SLI layer.
4335	*/
4336	void
4337	lpfc_mbx_cmpl_ns_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
4338	{
4339	MAILBOX_t *mb = &pmb->u.mb;
4340	struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *)pmb->ctx_ndlp;
4341	struct lpfc_vport *vport = pmb->vport;
4342	int rc;
4343
4344	pmb->ctx_ndlp = NULL;
4345	vport->gidft_inp = 0;
4346
4347	if (mb->mbxStatus) {
4348	lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
4349	"0260 Register NameServer error: 0x%x\n",
4350	mb->mbxStatus);
4351
4352	out:
4353	/* decrement the node reference count held for this
4354	* callback function.
4355	*/
4356	lpfc_nlp_put(ndlp);
4357	lpfc_mbox_rsrc_cleanup(phba, mbox: pmb, locked: MBOX_THD_UNLOCKED);
4358
4359	/* If the node is not registered with the scsi or nvme
4360	* transport, remove the fabric node. The failed reg_login
4361	* is terminal and forces the removal of the last node
4362	* reference.
4363	*/
4364	if (!(ndlp->fc4_xpt_flags & (SCSI_XPT_REGD | NVME_XPT_REGD))) {
4365	spin_lock_irq(lock: &ndlp->lock);
4366	ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
4367	spin_unlock_irq(lock: &ndlp->lock);
4368	lpfc_nlp_put(ndlp);
4369	}
4370
4371	if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
4372	/*
4373	* RegLogin failed, use loop map to make discovery
4374	* list
4375	*/
4376	lpfc_disc_list_loopmap(vport);
4377
4378	/* Start discovery */
4379	lpfc_disc_start(vport);
4380	return;
4381	}
4382	lpfc_vport_set_state(vport, new_state: FC_VPORT_FAILED);
4383	return;
4384	}
4385
4386	if (phba->sli_rev < LPFC_SLI_REV4)
4387	ndlp->nlp_rpi = mb->un.varWords[0];
4388	ndlp->nlp_flag |= NLP_RPI_REGISTERED;
4389	ndlp->nlp_type |= NLP_FABRIC;
4390	lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
4391	lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE | LOG_DISCOVERY,
4392	"0003 rpi:%x DID:%x flg:%x %d x%px\n",
4393	ndlp->nlp_rpi, ndlp->nlp_DID, ndlp->nlp_flag,
4394	kref_read(&ndlp->kref),
4395	ndlp);
4396
4397	if (vport->port_state < LPFC_VPORT_READY) {
4398	/* Link up discovery requires Fabric registration. */
4399	lpfc_ns_cmd(vport, SLI_CTNS_RNN_ID, 0, 0);
4400	lpfc_ns_cmd(vport, SLI_CTNS_RSNN_NN, 0, 0);
4401	lpfc_ns_cmd(vport, SLI_CTNS_RSPN_ID, 0, 0);
4402	lpfc_ns_cmd(vport, SLI_CTNS_RFT_ID, 0, 0);
4403
4404	if ((vport->cfg_enable_fc4_type == LPFC_ENABLE_BOTH) ||
4405	(vport->cfg_enable_fc4_type == LPFC_ENABLE_FCP))
4406	lpfc_ns_cmd(vport, SLI_CTNS_RFF_ID, 0, FC_TYPE_FCP);
4407
4408	if ((vport->cfg_enable_fc4_type == LPFC_ENABLE_BOTH) ||
4409	(vport->cfg_enable_fc4_type == LPFC_ENABLE_NVME))
4410	lpfc_ns_cmd(vport, SLI_CTNS_RFF_ID, 0,
4411	FC_TYPE_NVME);
4412
4413	/* Issue SCR just before NameServer GID_FT Query */
4414	lpfc_issue_els_scr(vport, retry: 0);
4415
4416	/* Link was bounced or a Fabric LOGO occurred. Start EDC
4417	* with initial FW values provided the congestion mode is
4418	* not off. Note that signals may or may not be supported
4419	* by the adapter but FPIN is provided by default for 1
4420	* or both missing signals support.
4421	*/
4422	if (phba->cmf_active_mode != LPFC_CFG_OFF) {
4423	phba->cgn_reg_fpin = phba->cgn_init_reg_fpin;
4424	phba->cgn_reg_signal = phba->cgn_init_reg_signal;
4425	rc = lpfc_issue_els_edc(vport, retry: 0);
4426	lpfc_printf_log(phba, KERN_INFO,
4427	LOG_INIT | LOG_ELS | LOG_DISCOVERY,
4428	"4220 Issue EDC status x%x Data x%x\n",
4429	rc, phba->cgn_init_reg_signal);
4430	} else if (phba->lmt & LMT_64Gb) {
4431	/* may send link fault capability descriptor */
4432	lpfc_issue_els_edc(vport, retry: 0);
4433	} else {
4434	lpfc_issue_els_rdf(vport, retry: 0);
4435	}
4436	}
4437
4438	vport->fc_ns_retry = 0;
4439	if (lpfc_issue_gidft(vport) == 0)
4440	goto out;
4441
4442	/*
4443	* At this point in time we may need to wait for multiple
4444	* SLI_CTNS_GID_FT CT commands to complete before we start discovery.
4445	*
4446	* decrement the node reference count held for this
4447	* callback function.
4448	*/
4449	lpfc_nlp_put(ndlp);
4450	lpfc_mbox_rsrc_cleanup(phba, mbox: pmb, locked: MBOX_THD_UNLOCKED);
4451	return;
4452	}
4453
4454	/*
4455	* This routine handles processing a Fabric Controller REG_LOGIN mailbox
4456	* command upon completion. It is setup in the LPFC_MBOXQ
4457	* as the completion routine when the command is handed off to the SLI layer.
4458	*/
4459	void
4460	lpfc_mbx_cmpl_fc_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
4461	{
4462	struct lpfc_vport *vport = pmb->vport;
4463	MAILBOX_t *mb = &pmb->u.mb;
4464	struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *)pmb->ctx_ndlp;
4465
4466	pmb->ctx_ndlp = NULL;
4467	if (mb->mbxStatus) {
4468	lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
4469	"0933 %s: Register FC login error: 0x%x\n",
4470	__func__, mb->mbxStatus);
4471	goto out;
4472	}
4473
4474	lpfc_check_nlp_post_devloss(vport, ndlp);
4475
4476	if (phba->sli_rev < LPFC_SLI_REV4)
4477	ndlp->nlp_rpi = mb->un.varWords[0];
4478
4479	lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
4480	"0934 %s: Complete FC x%x RegLogin rpi x%x ste x%x\n",
4481	__func__, ndlp->nlp_DID, ndlp->nlp_rpi,
4482	ndlp->nlp_state);
4483
4484	ndlp->nlp_flag |= NLP_RPI_REGISTERED;
4485	ndlp->nlp_flag &= ~NLP_REG_LOGIN_SEND;
4486	ndlp->nlp_type |= NLP_FABRIC;
4487	lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
4488
4489	out:
4490	lpfc_mbox_rsrc_cleanup(phba, mbox: pmb, locked: MBOX_THD_UNLOCKED);
4491
4492	/* Drop the reference count from the mbox at the end after
4493	* all the current reference to the ndlp have been done.
4494	*/
4495	lpfc_nlp_put(ndlp);
4496	}
4497
4498	static void
4499	lpfc_register_remote_port(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
4500	{
4501	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4502	struct fc_rport *rport;
4503	struct lpfc_rport_data *rdata;
4504	struct fc_rport_identifiers rport_ids;
4505	struct lpfc_hba *phba = vport->phba;
4506	unsigned long flags;
4507
4508	if (vport->cfg_enable_fc4_type == LPFC_ENABLE_NVME)
4509	return;
4510
4511	/* Remote port has reappeared. Re-register w/ FC transport */
4512	rport_ids.node_name = wwn_to_u64(wwn: ndlp->nlp_nodename.u.wwn);
4513	rport_ids.port_name = wwn_to_u64(wwn: ndlp->nlp_portname.u.wwn);
4514	rport_ids.port_id = ndlp->nlp_DID;
4515	rport_ids.roles = FC_RPORT_ROLE_UNKNOWN;
4516
4517
4518	lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
4519	"rport add: did:x%x flg:x%x type x%x",
4520	ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type);
4521
4522	/* Don't add the remote port if unloading. */
4523	if (vport->load_flag & FC_UNLOADING)
4524	return;
4525
4526	ndlp->rport = rport = fc_remote_port_add(shost, channel: 0, ids: &rport_ids);
4527	if (!rport) {
4528	dev_printk(KERN_WARNING, &phba->pcidev->dev,
4529	"Warning: fc_remote_port_add failed\n");
4530	return;
4531	}
4532
4533	/* Successful port add. Complete initializing node data */
4534	rport->maxframe_size = ndlp->nlp_maxframe;
4535	rport->supported_classes = ndlp->nlp_class_sup;
4536	rdata = rport->dd_data;
4537	rdata->pnode = lpfc_nlp_get(ndlp);
4538	if (!rdata->pnode) {
4539	dev_warn(&phba->pcidev->dev,
4540	"Warning - node ref failed. Unreg rport\n");
4541	fc_remote_port_delete(rport);
4542	ndlp->rport = NULL;
4543	return;
4544	}
4545
4546	spin_lock_irqsave(&ndlp->lock, flags);
4547	ndlp->fc4_xpt_flags |= SCSI_XPT_REGD;
4548	spin_unlock_irqrestore(lock: &ndlp->lock, flags);
4549
4550	if (ndlp->nlp_type & NLP_FCP_TARGET)
4551	rport_ids.roles |= FC_PORT_ROLE_FCP_TARGET;
4552	if (ndlp->nlp_type & NLP_FCP_INITIATOR)
4553	rport_ids.roles |= FC_PORT_ROLE_FCP_INITIATOR;
4554	if (ndlp->nlp_type & NLP_NVME_INITIATOR)
4555	rport_ids.roles |= FC_PORT_ROLE_NVME_INITIATOR;
4556	if (ndlp->nlp_type & NLP_NVME_TARGET)
4557	rport_ids.roles |= FC_PORT_ROLE_NVME_TARGET;
4558	if (ndlp->nlp_type & NLP_NVME_DISCOVERY)
4559	rport_ids.roles |= FC_PORT_ROLE_NVME_DISCOVERY;
4560
4561	if (rport_ids.roles != FC_RPORT_ROLE_UNKNOWN)
4562	fc_remote_port_rolechg(rport, roles: rport_ids.roles);
4563
4564	lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_NODE,
4565	"3183 %s rport x%px DID x%x, role x%x refcnt %d\n",
4566	__func__, rport, rport->port_id, rport->roles,
4567	kref_read(&ndlp->kref));
4568
4569	if ((rport->scsi_target_id != -1) &&
4570	(rport->scsi_target_id < LPFC_MAX_TARGET)) {
4571	ndlp->nlp_sid = rport->scsi_target_id;
4572	}
4573
4574	return;
4575	}
4576
4577	static void
4578	lpfc_unregister_remote_port(struct lpfc_nodelist *ndlp)
4579	{
4580	struct fc_rport *rport = ndlp->rport;
4581	struct lpfc_vport *vport = ndlp->vport;
4582
4583	if (vport->cfg_enable_fc4_type == LPFC_ENABLE_NVME)
4584	return;
4585
4586	lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
4587	"rport delete: did:x%x flg:x%x type x%x",
4588	ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type);
4589
4590	lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
4591	"3184 rport unregister x%06x, rport x%px "
4592	"xptflg x%x refcnt %d\n",
4593	ndlp->nlp_DID, rport, ndlp->fc4_xpt_flags,
4594	kref_read(&ndlp->kref));
4595
4596	fc_remote_port_delete(rport);
4597	lpfc_nlp_put(ndlp);
4598	}
4599
4600	static void
4601	lpfc_nlp_counters(struct lpfc_vport *vport, int state, int count)
4602	{
4603	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4604	unsigned long iflags;
4605
4606	spin_lock_irqsave(shost->host_lock, iflags);
4607	switch (state) {
4608	case NLP_STE_UNUSED_NODE:
4609	vport->fc_unused_cnt += count;
4610	break;
4611	case NLP_STE_PLOGI_ISSUE:
4612	vport->fc_plogi_cnt += count;
4613	break;
4614	case NLP_STE_ADISC_ISSUE:
4615	vport->fc_adisc_cnt += count;
4616	break;
4617	case NLP_STE_REG_LOGIN_ISSUE:
4618	vport->fc_reglogin_cnt += count;
4619	break;
4620	case NLP_STE_PRLI_ISSUE:
4621	vport->fc_prli_cnt += count;
4622	break;
4623	case NLP_STE_UNMAPPED_NODE:
4624	vport->fc_unmap_cnt += count;
4625	break;
4626	case NLP_STE_MAPPED_NODE:
4627	vport->fc_map_cnt += count;
4628	break;
4629	case NLP_STE_NPR_NODE:
4630	if (vport->fc_npr_cnt == 0 && count == -1)
4631	vport->fc_npr_cnt = 0;
4632	else
4633	vport->fc_npr_cnt += count;
4634	break;
4635	}
4636	spin_unlock_irqrestore(lock: shost->host_lock, flags: iflags);
4637	}
4638
4639	/* Register a node with backend if not already done */
4640	void
4641	lpfc_nlp_reg_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
4642	{
4643	unsigned long iflags;
4644
4645	lpfc_check_nlp_post_devloss(vport, ndlp);
4646
4647	spin_lock_irqsave(&ndlp->lock, iflags);
4648	if (ndlp->fc4_xpt_flags & NLP_XPT_REGD) {
4649	/* Already registered with backend, trigger rescan */
4650	spin_unlock_irqrestore(lock: &ndlp->lock, flags: iflags);
4651
4652	if (ndlp->fc4_xpt_flags & NVME_XPT_REGD &&
4653	ndlp->nlp_type & (NLP_NVME_TARGET | NLP_NVME_DISCOVERY)) {
4654	lpfc_nvme_rescan_port(vport, ndlp);
4655	}
4656	return;
4657	}
4658
4659	ndlp->fc4_xpt_flags |= NLP_XPT_REGD;
4660	spin_unlock_irqrestore(lock: &ndlp->lock, flags: iflags);
4661
4662	if (lpfc_valid_xpt_node(ndlp)) {
4663	vport->phba->nport_event_cnt++;
4664	/*
4665	* Tell the fc transport about the port, if we haven't
4666	* already. If we have, and it's a scsi entity, be
4667	*/
4668	lpfc_register_remote_port(vport, ndlp);
4669	}
4670
4671	/* We are done if we do not have any NVME remote node */
4672	if (!(ndlp->nlp_fc4_type & NLP_FC4_NVME))
4673	return;
4674
4675	/* Notify the NVME transport of this new rport. */
4676	if (vport->phba->sli_rev >= LPFC_SLI_REV4 &&
4677	ndlp->nlp_fc4_type & NLP_FC4_NVME) {
4678	if (vport->phba->nvmet_support == 0) {
4679	/* Register this rport with the transport.
4680	* Only NVME Target Rports are registered with
4681	* the transport.
4682	*/
4683	if (ndlp->nlp_type & NLP_NVME_TARGET) {
4684	vport->phba->nport_event_cnt++;
4685	lpfc_nvme_register_port(vport, ndlp);
4686	}
4687	} else {
4688	/* Just take an NDLP ref count since the
4689	* target does not register rports.
4690	*/
4691	lpfc_nlp_get(ndlp);
4692	}
4693	}
4694	}
4695
4696	/* Unregister a node with backend if not already done */
4697	void
4698	lpfc_nlp_unreg_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
4699	{
4700	unsigned long iflags;
4701
4702	spin_lock_irqsave(&ndlp->lock, iflags);
4703	if (!(ndlp->fc4_xpt_flags & NLP_XPT_REGD)) {
4704	spin_unlock_irqrestore(lock: &ndlp->lock, flags: iflags);
4705	lpfc_printf_vlog(vport, KERN_INFO,
4706	LOG_ELS | LOG_NODE | LOG_DISCOVERY,
4707	"0999 %s Not regd: ndlp x%px rport x%px DID "
4708	"x%x FLG x%x XPT x%x\n",
4709	__func__, ndlp, ndlp->rport, ndlp->nlp_DID,
4710	ndlp->nlp_flag, ndlp->fc4_xpt_flags);
4711	return;
4712	}
4713
4714	ndlp->fc4_xpt_flags &= ~NLP_XPT_REGD;
4715	spin_unlock_irqrestore(lock: &ndlp->lock, flags: iflags);
4716
4717	if (ndlp->rport &&
4718	ndlp->fc4_xpt_flags & SCSI_XPT_REGD) {
4719	vport->phba->nport_event_cnt++;
4720	lpfc_unregister_remote_port(ndlp);
4721	} else if (!ndlp->rport) {
4722	lpfc_printf_vlog(vport, KERN_INFO,
4723	LOG_ELS | LOG_NODE | LOG_DISCOVERY,
4724	"1999 %s NDLP in devloss x%px DID x%x FLG x%x"
4725	" XPT x%x refcnt %u\n",
4726	__func__, ndlp, ndlp->nlp_DID, ndlp->nlp_flag,
4727	ndlp->fc4_xpt_flags,
4728	kref_read(&ndlp->kref));
4729	}
4730
4731	if (ndlp->fc4_xpt_flags & NVME_XPT_REGD) {
4732	vport->phba->nport_event_cnt++;
4733	if (vport->phba->nvmet_support == 0) {
4734	/* Start devloss if target. */
4735	if (ndlp->nlp_type & NLP_NVME_TARGET)
4736	lpfc_nvme_unregister_port(vport, ndlp);
4737	} else {
4738	/* NVMET has no upcall. */
4739	lpfc_nlp_put(ndlp);
4740	}
4741	}
4742
4743	}
4744
4745	/*
4746	* Adisc state change handling
4747	*/
4748	static void
4749	lpfc_handle_adisc_state(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
4750	int new_state)
4751	{
4752	switch (new_state) {
4753	/*
4754	* Any state to ADISC_ISSUE
4755	* Do nothing, adisc cmpl handling will trigger state changes
4756	*/
4757	case NLP_STE_ADISC_ISSUE:
4758	break;
4759
4760	/*
4761	* ADISC_ISSUE to mapped states
4762	* Trigger a registration with backend, it will be nop if
4763	* already registered
4764	*/
4765	case NLP_STE_UNMAPPED_NODE:
4766	ndlp->nlp_type |= NLP_FC_NODE;
4767	fallthrough;
4768	case NLP_STE_MAPPED_NODE:
4769	ndlp->nlp_flag &= ~NLP_NODEV_REMOVE;
4770	lpfc_nlp_reg_node(vport, ndlp);
4771	break;
4772
4773	/*
4774	* ADISC_ISSUE to non-mapped states
4775	* We are moving from ADISC_ISSUE to a non-mapped state because
4776	* ADISC failed, we would have skipped unregistering with
4777	* backend, attempt it now
4778	*/
4779	case NLP_STE_NPR_NODE:
4780	ndlp->nlp_flag &= ~NLP_RCV_PLOGI;
4781	fallthrough;
4782	default:
4783	lpfc_nlp_unreg_node(vport, ndlp);
4784	break;
4785	}
4786
4787	}
4788
4789	static void
4790	lpfc_nlp_state_cleanup(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
4791	int old_state, int new_state)
4792	{
4793	/* Trap ADISC changes here */
4794	if (new_state == NLP_STE_ADISC_ISSUE ||
4795	old_state == NLP_STE_ADISC_ISSUE) {
4796	lpfc_handle_adisc_state(vport, ndlp, new_state);
4797	return;
4798	}
4799
4800	if (new_state == NLP_STE_UNMAPPED_NODE) {
4801	ndlp->nlp_flag &= ~NLP_NODEV_REMOVE;
4802	ndlp->nlp_type |= NLP_FC_NODE;
4803	}
4804	if (new_state == NLP_STE_MAPPED_NODE)
4805	ndlp->nlp_flag &= ~NLP_NODEV_REMOVE;
4806	if (new_state == NLP_STE_NPR_NODE)
4807	ndlp->nlp_flag &= ~NLP_RCV_PLOGI;
4808
4809	/* Reg/Unreg for FCP and NVME Transport interface */
4810	if ((old_state == NLP_STE_MAPPED_NODE ||
4811	old_state == NLP_STE_UNMAPPED_NODE)) {
4812	/* For nodes marked for ADISC, Handle unreg in ADISC cmpl
4813	* if linkup. In linkdown do unreg_node
4814	*/
4815	if (!(ndlp->nlp_flag & NLP_NPR_ADISC) ||
4816	!lpfc_is_link_up(phba: vport->phba))
4817	lpfc_nlp_unreg_node(vport, ndlp);
4818	}
4819
4820	if (new_state == NLP_STE_MAPPED_NODE ||
4821	new_state == NLP_STE_UNMAPPED_NODE)
4822	lpfc_nlp_reg_node(vport, ndlp);
4823
4824	/*
4825	* If the node just added to Mapped list was an FCP target,
4826	* but the remote port registration failed or assigned a target
4827	* id outside the presentable range - move the node to the
4828	* Unmapped List.
4829	*/
4830	if ((new_state == NLP_STE_MAPPED_NODE) &&
4831	(ndlp->nlp_type & NLP_FCP_TARGET) &&
4832	(!ndlp->rport ||
4833	ndlp->rport->scsi_target_id == -1 ||
4834	ndlp->rport->scsi_target_id >= LPFC_MAX_TARGET)) {
4835	spin_lock_irq(lock: &ndlp->lock);
4836	ndlp->nlp_flag |= NLP_TGT_NO_SCSIID;
4837	spin_unlock_irq(lock: &ndlp->lock);
4838	lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
4839	}
4840	}
4841
4842	static char *
4843	lpfc_nlp_state_name(char *buffer, size_t size, int state)
4844	{
4845	static char *states[] = {
4846	[NLP_STE_UNUSED_NODE] = "UNUSED",
4847	[NLP_STE_PLOGI_ISSUE] = "PLOGI",
4848	[NLP_STE_ADISC_ISSUE] = "ADISC",
4849	[NLP_STE_REG_LOGIN_ISSUE] = "REGLOGIN",
4850	[NLP_STE_PRLI_ISSUE] = "PRLI",
4851	[NLP_STE_LOGO_ISSUE] = "LOGO",
4852	[NLP_STE_UNMAPPED_NODE] = "UNMAPPED",
4853	[NLP_STE_MAPPED_NODE] = "MAPPED",
4854	[NLP_STE_NPR_NODE] = "NPR",
4855	};
4856
4857	if (state < NLP_STE_MAX_STATE && states[state])
4858	strscpy(p: buffer, q: states[state], size);
4859	else
4860	snprintf(buf: buffer, size, fmt: "unknown (%d)", state);
4861	return buffer;
4862	}
4863
4864	void
4865	lpfc_nlp_set_state(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
4866	int state)
4867	{
4868	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4869	int old_state = ndlp->nlp_state;
4870	int node_dropped = ndlp->nlp_flag & NLP_DROPPED;
4871	char name1[16], name2[16];
4872
4873	lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
4874	"0904 NPort state transition x%06x, %s -> %s\n",
4875	ndlp->nlp_DID,
4876	lpfc_nlp_state_name(name1, sizeof(name1), old_state),
4877	lpfc_nlp_state_name(name2, sizeof(name2), state));
4878
4879	lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE,
4880	"node statechg did:x%x old:%d ste:%d",
4881	ndlp->nlp_DID, old_state, state);
4882
4883	if (node_dropped && old_state == NLP_STE_UNUSED_NODE &&
4884	state != NLP_STE_UNUSED_NODE) {
4885	ndlp->nlp_flag &= ~NLP_DROPPED;
4886	lpfc_nlp_get(ndlp);
4887	}
4888
4889	if (old_state == NLP_STE_NPR_NODE &&
4890	state != NLP_STE_NPR_NODE)
4891	lpfc_cancel_retry_delay_tmo(vport, ndlp);
4892	if (old_state == NLP_STE_UNMAPPED_NODE) {
4893	ndlp->nlp_flag &= ~NLP_TGT_NO_SCSIID;
4894	ndlp->nlp_type &= ~NLP_FC_NODE;
4895	}
4896
4897	if (list_empty(head: &ndlp->nlp_listp)) {
4898	spin_lock_irq(lock: shost->host_lock);
4899	list_add_tail(new: &ndlp->nlp_listp, head: &vport->fc_nodes);
4900	spin_unlock_irq(lock: shost->host_lock);
4901	} else if (old_state)
4902	lpfc_nlp_counters(vport, state: old_state, count: -1);
4903
4904	ndlp->nlp_state = state;
4905	lpfc_nlp_counters(vport, state, count: 1);
4906	lpfc_nlp_state_cleanup(vport, ndlp, old_state, new_state: state);
4907	}
4908
4909	void
4910	lpfc_enqueue_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
4911	{
4912	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4913
4914	if (list_empty(head: &ndlp->nlp_listp)) {
4915	spin_lock_irq(lock: shost->host_lock);
4916	list_add_tail(new: &ndlp->nlp_listp, head: &vport->fc_nodes);
4917	spin_unlock_irq(lock: shost->host_lock);
4918	}
4919	}
4920
4921	void
4922	lpfc_dequeue_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
4923	{
4924	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4925
4926	lpfc_cancel_retry_delay_tmo(vport, ndlp);
4927	if (ndlp->nlp_state && !list_empty(head: &ndlp->nlp_listp))
4928	lpfc_nlp_counters(vport, state: ndlp->nlp_state, count: -1);
4929	spin_lock_irq(lock: shost->host_lock);
4930	list_del_init(entry: &ndlp->nlp_listp);
4931	spin_unlock_irq(lock: shost->host_lock);
4932	lpfc_nlp_state_cleanup(vport, ndlp, old_state: ndlp->nlp_state,
4933	NLP_STE_UNUSED_NODE);
4934	}
4935
4936	/**
4937	* lpfc_initialize_node - Initialize all fields of node object
4938	* @vport: Pointer to Virtual Port object.
4939	* @ndlp: Pointer to FC node object.
4940	* @did: FC_ID of the node.
4941	*
4942	* This function is always called when node object need to be initialized.
4943	* It initializes all the fields of the node object. Although the reference
4944	* to phba from @ndlp can be obtained indirectly through it's reference to
4945	* @vport, a direct reference to phba is taken here by @ndlp. This is due
4946	* to the life-span of the @ndlp might go beyond the existence of @vport as
4947	* the final release of ndlp is determined by its reference count. And, the
4948	* operation on @ndlp needs the reference to phba.
4949	**/
4950	static inline void
4951	lpfc_initialize_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
4952	uint32_t did)
4953	{
4954	INIT_LIST_HEAD(list: &ndlp->els_retry_evt.evt_listp);
4955	INIT_LIST_HEAD(list: &ndlp->dev_loss_evt.evt_listp);
4956	timer_setup(&ndlp->nlp_delayfunc, lpfc_els_retry_delay, 0);
4957	INIT_LIST_HEAD(list: &ndlp->recovery_evt.evt_listp);
4958
4959	ndlp->nlp_DID = did;
4960	ndlp->vport = vport;
4961	ndlp->phba = vport->phba;
4962	ndlp->nlp_sid = NLP_NO_SID;
4963	ndlp->nlp_fc4_type = NLP_FC4_NONE;
4964	kref_init(kref: &ndlp->kref);
4965	atomic_set(v: &ndlp->cmd_pending, i: 0);
4966	ndlp->cmd_qdepth = vport->cfg_tgt_queue_depth;
4967	ndlp->nlp_defer_did = NLP_EVT_NOTHING_PENDING;
4968	}
4969
4970	void
4971	lpfc_drop_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
4972	{
4973	/*
4974	* Use of lpfc_drop_node and UNUSED list: lpfc_drop_node should
4975	* be used when lpfc wants to remove the "last" lpfc_nlp_put() to
4976	* release the ndlp from the vport when conditions are correct.
4977	*/
4978	if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
4979	return;
4980	lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNUSED_NODE);
4981	if (vport->phba->sli_rev == LPFC_SLI_REV4) {
4982	lpfc_cleanup_vports_rrqs(vport, ndlp);
4983	lpfc_unreg_rpi(vport, ndlp);
4984	}
4985
4986	/* NLP_DROPPED means another thread already removed the initial
4987	* reference from lpfc_nlp_init. If set, don't drop it again and
4988	* introduce an imbalance.
4989	*/
4990	spin_lock_irq(lock: &ndlp->lock);
4991	if (!(ndlp->nlp_flag & NLP_DROPPED)) {
4992	ndlp->nlp_flag |= NLP_DROPPED;
4993	spin_unlock_irq(lock: &ndlp->lock);
4994	lpfc_nlp_put(ndlp);
4995	return;
4996	}
4997	spin_unlock_irq(lock: &ndlp->lock);
4998	}
4999
5000	/*
5001	* Start / ReStart rescue timer for Discovery / RSCN handling
5002	*/
5003	void
5004	lpfc_set_disctmo(struct lpfc_vport *vport)
5005	{
5006	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
5007	struct lpfc_hba *phba = vport->phba;
5008	uint32_t tmo;
5009
5010	if (vport->port_state == LPFC_LOCAL_CFG_LINK) {
5011	/* For FAN, timeout should be greater than edtov */
5012	tmo = (((phba->fc_edtov + 999) / 1000) + 1);
5013	} else {
5014	/* Normal discovery timeout should be > than ELS/CT timeout
5015	* FC spec states we need 3 * ratov for CT requests
5016	*/
5017	tmo = ((phba->fc_ratov * 3) + 3);
5018	}
5019
5020
5021	if (!timer_pending(timer: &vport->fc_disctmo)) {
5022	lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
5023	"set disc timer: tmo:x%x state:x%x flg:x%x",
5024	tmo, vport->port_state, vport->fc_flag);
5025	}
5026
5027	mod_timer(timer: &vport->fc_disctmo, expires: jiffies + msecs_to_jiffies(m: 1000 * tmo));
5028	spin_lock_irq(lock: shost->host_lock);
5029	vport->fc_flag |= FC_DISC_TMO;
5030	spin_unlock_irq(lock: shost->host_lock);
5031
5032	/* Start Discovery Timer state <hba_state> */
5033	lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
5034	"0247 Start Discovery Timer state x%x "
5035	"Data: x%x x%lx x%x x%x\n",
5036	vport->port_state, tmo,
5037	(unsigned long)&vport->fc_disctmo, vport->fc_plogi_cnt,
5038	vport->fc_adisc_cnt);
5039
5040	return;
5041	}
5042
5043	/*
5044	* Cancel rescue timer for Discovery / RSCN handling
5045	*/
5046	int
5047	lpfc_can_disctmo(struct lpfc_vport *vport)
5048	{
5049	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
5050	unsigned long iflags;
5051
5052	lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
5053	"can disc timer: state:x%x rtry:x%x flg:x%x",
5054	vport->port_state, vport->fc_ns_retry, vport->fc_flag);
5055
5056	/* Turn off discovery timer if its running */
5057	if (vport->fc_flag & FC_DISC_TMO ||
5058	timer_pending(timer: &vport->fc_disctmo)) {
5059	spin_lock_irqsave(shost->host_lock, iflags);
5060	vport->fc_flag &= ~FC_DISC_TMO;
5061	spin_unlock_irqrestore(lock: shost->host_lock, flags: iflags);
5062	del_timer_sync(timer: &vport->fc_disctmo);
5063	spin_lock_irqsave(&vport->work_port_lock, iflags);
5064	vport->work_port_events &= ~WORKER_DISC_TMO;
5065	spin_unlock_irqrestore(lock: &vport->work_port_lock, flags: iflags);
5066	}
5067
5068	/* Cancel Discovery Timer state <hba_state> */
5069	lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
5070	"0248 Cancel Discovery Timer state x%x "
5071	"Data: x%x x%x x%x\n",
5072	vport->port_state, vport->fc_flag,
5073	vport->fc_plogi_cnt, vport->fc_adisc_cnt);
5074	return 0;
5075	}
5076
5077	/*
5078	* Check specified ring for outstanding IOCB on the SLI queue
5079	* Return true if iocb matches the specified nport
5080	*/
5081	int
5082	lpfc_check_sli_ndlp(struct lpfc_hba *phba,
5083	struct lpfc_sli_ring *pring,
5084	struct lpfc_iocbq *iocb,
5085	struct lpfc_nodelist *ndlp)
5086	{
5087	struct lpfc_vport *vport = ndlp->vport;
5088	u8 ulp_command;
5089	u16 ulp_context;
5090	u32 remote_id;
5091
5092	if (iocb->vport != vport)
5093	return 0;
5094
5095	ulp_command = get_job_cmnd(phba, iocbq: iocb);
5096	ulp_context = get_job_ulpcontext(phba, iocbq: iocb);
5097	remote_id = get_job_els_rsp64_did(phba, iocbq: iocb);
5098
5099	if (pring->ringno == LPFC_ELS_RING) {
5100	switch (ulp_command) {
5101	case CMD_GEN_REQUEST64_CR:
5102	if (iocb->ndlp == ndlp)
5103	return 1;
5104	fallthrough;
5105	case CMD_ELS_REQUEST64_CR:
5106	if (remote_id == ndlp->nlp_DID)
5107	return 1;
5108	fallthrough;
5109	case CMD_XMIT_ELS_RSP64_CX:
5110	if (iocb->ndlp == ndlp)
5111	return 1;
5112	}
5113	} else if (pring->ringno == LPFC_FCP_RING) {
5114	/* Skip match check if waiting to relogin to FCP target */
5115	if ((ndlp->nlp_type & NLP_FCP_TARGET) &&
5116	(ndlp->nlp_flag & NLP_DELAY_TMO)) {
5117	return 0;
5118	}
5119	if (ulp_context == ndlp->nlp_rpi)
5120	return 1;
5121	}
5122	return 0;
5123	}
5124
5125	static void
5126	__lpfc_dequeue_nport_iocbs(struct lpfc_hba *phba,
5127	struct lpfc_nodelist *ndlp, struct lpfc_sli_ring *pring,
5128	struct list_head *dequeue_list)
5129	{
5130	struct lpfc_iocbq *iocb, *next_iocb;
5131
5132	list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) {
5133	/* Check to see if iocb matches the nport */
5134	if (lpfc_check_sli_ndlp(phba, pring, iocb, ndlp))
5135	/* match, dequeue */
5136	list_move_tail(list: &iocb->list, head: dequeue_list);
5137	}
5138	}
5139
5140	static void
5141	lpfc_sli3_dequeue_nport_iocbs(struct lpfc_hba *phba,
5142	struct lpfc_nodelist *ndlp, struct list_head *dequeue_list)
5143	{
5144	struct lpfc_sli *psli = &phba->sli;
5145	uint32_t i;
5146
5147	spin_lock_irq(lock: &phba->hbalock);
5148	for (i = 0; i < psli->num_rings; i++)
5149	__lpfc_dequeue_nport_iocbs(phba, ndlp, pring: &psli->sli3_ring[i],
5150	dequeue_list);
5151	spin_unlock_irq(lock: &phba->hbalock);
5152	}
5153
5154	static void
5155	lpfc_sli4_dequeue_nport_iocbs(struct lpfc_hba *phba,
5156	struct lpfc_nodelist *ndlp, struct list_head *dequeue_list)
5157	{
5158	struct lpfc_sli_ring *pring;
5159	struct lpfc_queue *qp = NULL;
5160
5161	spin_lock_irq(lock: &phba->hbalock);
5162	list_for_each_entry(qp, &phba->sli4_hba.lpfc_wq_list, wq_list) {
5163	pring = qp->pring;
5164	if (!pring)
5165	continue;
5166	spin_lock(lock: &pring->ring_lock);
5167	__lpfc_dequeue_nport_iocbs(phba, ndlp, pring, dequeue_list);
5168	spin_unlock(lock: &pring->ring_lock);
5169	}
5170	spin_unlock_irq(lock: &phba->hbalock);
5171	}
5172
5173	/*
5174	* Free resources / clean up outstanding I/Os
5175	* associated with nlp_rpi in the LPFC_NODELIST entry.
5176	*/
5177	static int
5178	lpfc_no_rpi(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
5179	{
5180	LIST_HEAD(completions);
5181
5182	lpfc_fabric_abort_nport(ndlp);
5183
5184	/*
5185	* Everything that matches on txcmplq will be returned
5186	* by firmware with a no rpi error.
5187	*/
5188	if (ndlp->nlp_flag & NLP_RPI_REGISTERED) {
5189	if (phba->sli_rev != LPFC_SLI_REV4)
5190	lpfc_sli3_dequeue_nport_iocbs(phba, ndlp, dequeue_list: &completions);
5191	else
5192	lpfc_sli4_dequeue_nport_iocbs(phba, ndlp, dequeue_list: &completions);
5193	}
5194
5195	/* Cancel all the IOCBs from the completions list */
5196	lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT,
5197	IOERR_SLI_ABORTED);
5198
5199	return 0;
5200	}
5201
5202	/**
5203	* lpfc_nlp_logo_unreg - Unreg mailbox completion handler before LOGO
5204	* @phba: Pointer to HBA context object.
5205	* @pmb: Pointer to mailbox object.
5206	*
5207	* This function will issue an ELS LOGO command after completing
5208	* the UNREG_RPI.
5209	**/
5210	static void
5211	lpfc_nlp_logo_unreg(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
5212	{
5213	struct lpfc_vport *vport = pmb->vport;
5214	struct lpfc_nodelist *ndlp;
5215
5216	ndlp = (struct lpfc_nodelist *)(pmb->ctx_ndlp);
5217	if (!ndlp)
5218	return;
5219	lpfc_issue_els_logo(vport, ndlp, 0);
5220
5221	/* Check to see if there are any deferred events to process */
5222	if ((ndlp->nlp_flag & NLP_UNREG_INP) &&
5223	(ndlp->nlp_defer_did != NLP_EVT_NOTHING_PENDING)) {
5224	lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
5225	"1434 UNREG cmpl deferred logo x%x "
5226	"on NPort x%x Data: x%x x%px\n",
5227	ndlp->nlp_rpi, ndlp->nlp_DID,
5228	ndlp->nlp_defer_did, ndlp);
5229
5230	ndlp->nlp_flag &= ~NLP_UNREG_INP;
5231	ndlp->nlp_defer_did = NLP_EVT_NOTHING_PENDING;
5232	lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
5233	} else {
5234	/* NLP_RELEASE_RPI is only set for SLI4 ports. */
5235	if (ndlp->nlp_flag & NLP_RELEASE_RPI) {
5236	lpfc_sli4_free_rpi(vport->phba, ndlp->nlp_rpi);
5237	spin_lock_irq(lock: &ndlp->lock);
5238	ndlp->nlp_flag &= ~NLP_RELEASE_RPI;
5239	ndlp->nlp_rpi = LPFC_RPI_ALLOC_ERROR;
5240	spin_unlock_irq(lock: &ndlp->lock);
5241	}
5242	spin_lock_irq(lock: &ndlp->lock);
5243	ndlp->nlp_flag &= ~NLP_UNREG_INP;
5244	spin_unlock_irq(lock: &ndlp->lock);
5245	}
5246
5247	/* The node has an outstanding reference for the unreg. Now
5248	* that the LOGO action and cleanup are finished, release
5249	* resources.
5250	*/
5251	lpfc_nlp_put(ndlp);
5252	mempool_free(element: pmb, pool: phba->mbox_mem_pool);
5253	}
5254
5255	/*
5256	* Sets the mailbox completion handler to be used for the
5257	* unreg_rpi command. The handler varies based on the state of
5258	* the port and what will be happening to the rpi next.
5259	*/
5260	static void
5261	lpfc_set_unreg_login_mbx_cmpl(struct lpfc_hba *phba, struct lpfc_vport *vport,
5262	struct lpfc_nodelist *ndlp, LPFC_MBOXQ_t *mbox)
5263	{
5264	unsigned long iflags;
5265
5266	/* Driver always gets a reference on the mailbox job
5267	* in support of async jobs.
5268	*/
5269	mbox->ctx_ndlp = lpfc_nlp_get(ndlp);
5270	if (!mbox->ctx_ndlp)
5271	return;
5272
5273	if (ndlp->nlp_flag & NLP_ISSUE_LOGO) {
5274	mbox->mbox_cmpl = lpfc_nlp_logo_unreg;
5275
5276	} else if (phba->sli_rev == LPFC_SLI_REV4 &&
5277	(!(vport->load_flag & FC_UNLOADING)) &&
5278	(bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) >=
5279	LPFC_SLI_INTF_IF_TYPE_2) &&
5280	(kref_read(kref: &ndlp->kref) > 0)) {
5281	mbox->mbox_cmpl = lpfc_sli4_unreg_rpi_cmpl_clr;
5282	} else {
5283	if (vport->load_flag & FC_UNLOADING) {
5284	if (phba->sli_rev == LPFC_SLI_REV4) {
5285	spin_lock_irqsave(&ndlp->lock, iflags);
5286	ndlp->nlp_flag |= NLP_RELEASE_RPI;
5287	spin_unlock_irqrestore(lock: &ndlp->lock, flags: iflags);
5288	}
5289	}
5290	mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
5291	}
5292	}
5293
5294	/*
5295	* Free rpi associated with LPFC_NODELIST entry.
5296	* This routine is called from lpfc_freenode(), when we are removing
5297	* a LPFC_NODELIST entry. It is also called if the driver initiates a
5298	* LOGO that completes successfully, and we are waiting to PLOGI back
5299	* to the remote NPort. In addition, it is called after we receive
5300	* and unsolicated ELS cmd, send back a rsp, the rsp completes and
5301	* we are waiting to PLOGI back to the remote NPort.
5302	*/
5303	int
5304	lpfc_unreg_rpi(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
5305	{
5306	struct lpfc_hba *phba = vport->phba;
5307	LPFC_MBOXQ_t *mbox;
5308	int rc, acc_plogi = 1;
5309	uint16_t rpi;
5310
5311	if (ndlp->nlp_flag & NLP_RPI_REGISTERED ||
5312	ndlp->nlp_flag & NLP_REG_LOGIN_SEND) {
5313	if (ndlp->nlp_flag & NLP_REG_LOGIN_SEND)
5314	lpfc_printf_vlog(vport, KERN_INFO,
5315	LOG_NODE | LOG_DISCOVERY,
5316	"3366 RPI x%x needs to be "
5317	"unregistered nlp_flag x%x "
5318	"did x%x\n",
5319	ndlp->nlp_rpi, ndlp->nlp_flag,
5320	ndlp->nlp_DID);
5321
5322	/* If there is already an UNREG in progress for this ndlp,
5323	* no need to queue up another one.
5324	*/
5325	if (ndlp->nlp_flag & NLP_UNREG_INP) {
5326	lpfc_printf_vlog(vport, KERN_INFO,
5327	LOG_NODE | LOG_DISCOVERY,
5328	"1436 unreg_rpi SKIP UNREG x%x on "
5329	"NPort x%x deferred x%x flg x%x "
5330	"Data: x%px\n",
5331	ndlp->nlp_rpi, ndlp->nlp_DID,
5332	ndlp->nlp_defer_did,
5333	ndlp->nlp_flag, ndlp);
5334	goto out;
5335	}
5336
5337	mbox = mempool_alloc(pool: phba->mbox_mem_pool, GFP_KERNEL);
5338	if (mbox) {
5339	/* SLI4 ports require the physical rpi value. */
5340	rpi = ndlp->nlp_rpi;
5341	if (phba->sli_rev == LPFC_SLI_REV4)
5342	rpi = phba->sli4_hba.rpi_ids[ndlp->nlp_rpi];
5343
5344	lpfc_unreg_login(phba, vport->vpi, rpi, mbox);
5345	mbox->vport = vport;
5346	lpfc_set_unreg_login_mbx_cmpl(phba, vport, ndlp, mbox);
5347	if (!mbox->ctx_ndlp) {
5348	mempool_free(element: mbox, pool: phba->mbox_mem_pool);
5349	return 1;
5350	}
5351
5352	if (mbox->mbox_cmpl == lpfc_sli4_unreg_rpi_cmpl_clr)
5353	/*
5354	* accept PLOGIs after unreg_rpi_cmpl
5355	*/
5356	acc_plogi = 0;
5357	if (((ndlp->nlp_DID & Fabric_DID_MASK) !=
5358	Fabric_DID_MASK) &&
5359	(!(vport->fc_flag & FC_OFFLINE_MODE)))
5360	ndlp->nlp_flag |= NLP_UNREG_INP;
5361
5362	lpfc_printf_vlog(vport, KERN_INFO,
5363	LOG_NODE | LOG_DISCOVERY,
5364	"1433 unreg_rpi UNREG x%x on "
5365	"NPort x%x deferred flg x%x "
5366	"Data:x%px\n",
5367	ndlp->nlp_rpi, ndlp->nlp_DID,
5368	ndlp->nlp_flag, ndlp);
5369
5370	rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
5371	if (rc == MBX_NOT_FINISHED) {
5372	ndlp->nlp_flag &= ~NLP_UNREG_INP;
5373	mempool_free(element: mbox, pool: phba->mbox_mem_pool);
5374	acc_plogi = 1;
5375	lpfc_nlp_put(ndlp);
5376	}
5377	} else {
5378	lpfc_printf_vlog(vport, KERN_INFO,
5379	LOG_NODE | LOG_DISCOVERY,
5380	"1444 Failed to allocate mempool "
5381	"unreg_rpi UNREG x%x, "
5382	"DID x%x, flag x%x, "
5383	"ndlp x%px\n",
5384	ndlp->nlp_rpi, ndlp->nlp_DID,
5385	ndlp->nlp_flag, ndlp);
5386
5387	/* Because mempool_alloc failed, we
5388	* will issue a LOGO here and keep the rpi alive if
5389	* not unloading.
5390	*/
5391	if (!(vport->load_flag & FC_UNLOADING)) {
5392	ndlp->nlp_flag &= ~NLP_UNREG_INP;
5393	lpfc_issue_els_logo(vport, ndlp, 0);
5394	ndlp->nlp_prev_state = ndlp->nlp_state;
5395	lpfc_nlp_set_state(vport, ndlp,
5396	NLP_STE_NPR_NODE);
5397	}
5398
5399	return 1;
5400	}
5401	lpfc_no_rpi(phba, ndlp);
5402	out:
5403	if (phba->sli_rev != LPFC_SLI_REV4)
5404	ndlp->nlp_rpi = 0;
5405	ndlp->nlp_flag &= ~NLP_RPI_REGISTERED;
5406	ndlp->nlp_flag &= ~NLP_NPR_ADISC;
5407	if (acc_plogi)
5408	ndlp->nlp_flag &= ~NLP_LOGO_ACC;
5409	return 1;
5410	}
5411	ndlp->nlp_flag &= ~NLP_LOGO_ACC;
5412	return 0;
5413	}
5414
5415	/**
5416	* lpfc_unreg_hba_rpis - Unregister rpis registered to the hba.
5417	* @phba: pointer to lpfc hba data structure.
5418	*
5419	* This routine is invoked to unregister all the currently registered RPIs
5420	* to the HBA.
5421	**/
5422	void
5423	lpfc_unreg_hba_rpis(struct lpfc_hba *phba)
5424	{
5425	struct lpfc_vport **vports;
5426	struct lpfc_nodelist *ndlp;
5427	struct Scsi_Host *shost;
5428	int i;
5429
5430	vports = lpfc_create_vport_work_array(phba);
5431	if (!vports) {
5432	lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
5433	"2884 Vport array allocation failed \n");
5434	return;
5435	}
5436	for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
5437	shost = lpfc_shost_from_vport(vport: vports[i]);
5438	spin_lock_irq(lock: shost->host_lock);
5439	list_for_each_entry(ndlp, &vports[i]->fc_nodes, nlp_listp) {
5440	if (ndlp->nlp_flag & NLP_RPI_REGISTERED) {
5441	/* The mempool_alloc might sleep */
5442	spin_unlock_irq(lock: shost->host_lock);
5443	lpfc_unreg_rpi(vport: vports[i], ndlp);
5444	spin_lock_irq(lock: shost->host_lock);
5445	}
5446	}
5447	spin_unlock_irq(lock: shost->host_lock);
5448	}
5449	lpfc_destroy_vport_work_array(phba, vports);
5450	}
5451
5452	void
5453	lpfc_unreg_all_rpis(struct lpfc_vport *vport)
5454	{
5455	struct lpfc_hba *phba = vport->phba;
5456	LPFC_MBOXQ_t *mbox;
5457	int rc;
5458
5459	if (phba->sli_rev == LPFC_SLI_REV4) {
5460	lpfc_sli4_unreg_all_rpis(vport);
5461	return;
5462	}
5463
5464	mbox = mempool_alloc(pool: phba->mbox_mem_pool, GFP_KERNEL);
5465	if (mbox) {
5466	lpfc_unreg_login(phba, vport->vpi, LPFC_UNREG_ALL_RPIS_VPORT,
5467	mbox);
5468	mbox->vport = vport;
5469	mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
5470	mbox->ctx_ndlp = NULL;
5471	rc = lpfc_sli_issue_mbox_wait(phba, mbox, LPFC_MBOX_TMO);
5472	if (rc != MBX_TIMEOUT)
5473	mempool_free(element: mbox, pool: phba->mbox_mem_pool);
5474
5475	if ((rc == MBX_TIMEOUT) || (rc == MBX_NOT_FINISHED))
5476	lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
5477	"1836 Could not issue "
5478	"unreg_login(all_rpis) status %d\n",
5479	rc);
5480	}
5481	}
5482
5483	void
5484	lpfc_unreg_default_rpis(struct lpfc_vport *vport)
5485	{
5486	struct lpfc_hba *phba = vport->phba;
5487	LPFC_MBOXQ_t *mbox;
5488	int rc;
5489
5490	/* Unreg DID is an SLI3 operation. */
5491	if (phba->sli_rev > LPFC_SLI_REV3)
5492	return;
5493
5494	mbox = mempool_alloc(pool: phba->mbox_mem_pool, GFP_KERNEL);
5495	if (mbox) {
5496	lpfc_unreg_did(phba, vport->vpi, LPFC_UNREG_ALL_DFLT_RPIS,
5497	mbox);
5498	mbox->vport = vport;
5499	mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
5500	mbox->ctx_ndlp = NULL;
5501	rc = lpfc_sli_issue_mbox_wait(phba, mbox, LPFC_MBOX_TMO);
5502	if (rc != MBX_TIMEOUT)
5503	mempool_free(element: mbox, pool: phba->mbox_mem_pool);
5504
5505	if ((rc == MBX_TIMEOUT) || (rc == MBX_NOT_FINISHED))
5506	lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
5507	"1815 Could not issue "
5508	"unreg_did (default rpis) status %d\n",
5509	rc);
5510	}
5511	}
5512
5513	/*
5514	* Free resources associated with LPFC_NODELIST entry
5515	* so it can be freed.
5516	*/
5517	static int
5518	lpfc_cleanup_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
5519	{
5520	struct lpfc_hba *phba = vport->phba;
5521	LPFC_MBOXQ_t *mb, *nextmb;
5522
5523	/* Cleanup node for NPort <nlp_DID> */
5524	lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
5525	"0900 Cleanup node for NPort x%x "
5526	"Data: x%x x%x x%x\n",
5527	ndlp->nlp_DID, ndlp->nlp_flag,
5528	ndlp->nlp_state, ndlp->nlp_rpi);
5529	lpfc_dequeue_node(vport, ndlp);
5530
5531	/* Don't need to clean up REG_LOGIN64 cmds for Default RPI cleanup */
5532
5533	/* cleanup any ndlp on mbox q waiting for reglogin cmpl */
5534	if ((mb = phba->sli.mbox_active)) {
5535	if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) &&
5536	!(mb->mbox_flag & LPFC_MBX_IMED_UNREG) &&
5537	(ndlp == (struct lpfc_nodelist *)mb->ctx_ndlp)) {
5538	mb->ctx_ndlp = NULL;
5539	mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
5540	}
5541	}
5542
5543	spin_lock_irq(lock: &phba->hbalock);
5544	/* Cleanup REG_LOGIN completions which are not yet processed */
5545	list_for_each_entry(mb, &phba->sli.mboxq_cmpl, list) {
5546	if ((mb->u.mb.mbxCommand != MBX_REG_LOGIN64) ||
5547	(mb->mbox_flag & LPFC_MBX_IMED_UNREG) ||
5548	(ndlp != (struct lpfc_nodelist *)mb->ctx_ndlp))
5549	continue;
5550
5551	mb->ctx_ndlp = NULL;
5552	mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
5553	}
5554
5555	list_for_each_entry_safe(mb, nextmb, &phba->sli.mboxq, list) {
5556	if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) &&
5557	!(mb->mbox_flag & LPFC_MBX_IMED_UNREG) &&
5558	(ndlp == (struct lpfc_nodelist *)mb->ctx_ndlp)) {
5559	list_del(entry: &mb->list);
5560	lpfc_mbox_rsrc_cleanup(phba, mbox: mb, locked: MBOX_THD_LOCKED);
5561
5562	/* Don't invoke lpfc_nlp_put. The driver is in
5563	* lpfc_nlp_release context.
5564	*/
5565	}
5566	}
5567	spin_unlock_irq(lock: &phba->hbalock);
5568
5569	lpfc_els_abort(phba, ndlp);
5570
5571	spin_lock_irq(lock: &ndlp->lock);
5572	ndlp->nlp_flag &= ~NLP_DELAY_TMO;
5573	spin_unlock_irq(lock: &ndlp->lock);
5574
5575	ndlp->nlp_last_elscmd = 0;
5576	del_timer_sync(timer: &ndlp->nlp_delayfunc);
5577
5578	list_del_init(entry: &ndlp->els_retry_evt.evt_listp);
5579	list_del_init(entry: &ndlp->dev_loss_evt.evt_listp);
5580	list_del_init(entry: &ndlp->recovery_evt.evt_listp);
5581	lpfc_cleanup_vports_rrqs(vport, ndlp);
5582
5583	if (phba->sli_rev == LPFC_SLI_REV4)
5584	ndlp->nlp_flag |= NLP_RELEASE_RPI;
5585
5586	return 0;
5587	}
5588
5589	static int
5590	lpfc_matchdid(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
5591	uint32_t did)
5592	{
5593	D_ID mydid, ndlpdid, matchdid;
5594
5595	if (did == Bcast_DID)
5596	return 0;
5597
5598	/* First check for Direct match */
5599	if (ndlp->nlp_DID == did)
5600	return 1;
5601
5602	/* Next check for area/domain identically equals 0 match */
5603	mydid.un.word = vport->fc_myDID;
5604	if ((mydid.un.b.domain == 0) && (mydid.un.b.area == 0)) {
5605	return 0;
5606	}
5607
5608	matchdid.un.word = did;
5609	ndlpdid.un.word = ndlp->nlp_DID;
5610	if (matchdid.un.b.id == ndlpdid.un.b.id) {
5611	if ((mydid.un.b.domain == matchdid.un.b.domain) &&
5612	(mydid.un.b.area == matchdid.un.b.area)) {
5613	/* This code is supposed to match the ID
5614	* for a private loop device that is
5615	* connect to fl_port. But we need to
5616	* check that the port did not just go
5617	* from pt2pt to fabric or we could end
5618	* up matching ndlp->nlp_DID 000001 to
5619	* fabric DID 0x20101
5620	*/
5621	if ((ndlpdid.un.b.domain == 0) &&
5622	(ndlpdid.un.b.area == 0)) {
5623	if (ndlpdid.un.b.id &&
5624	vport->phba->fc_topology ==
5625	LPFC_TOPOLOGY_LOOP)
5626	return 1;
5627	}
5628	return 0;
5629	}
5630
5631	matchdid.un.word = ndlp->nlp_DID;
5632	if ((mydid.un.b.domain == ndlpdid.un.b.domain) &&
5633	(mydid.un.b.area == ndlpdid.un.b.area)) {
5634	if ((matchdid.un.b.domain == 0) &&
5635	(matchdid.un.b.area == 0)) {
5636	if (matchdid.un.b.id)
5637	return 1;
5638	}
5639	}
5640	}
5641	return 0;
5642	}
5643
5644	/* Search for a nodelist entry */
5645	static struct lpfc_nodelist *
5646	__lpfc_findnode_did(struct lpfc_vport *vport, uint32_t did)
5647	{
5648	struct lpfc_nodelist *ndlp;
5649	uint32_t data1;
5650
5651	list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
5652	if (lpfc_matchdid(vport, ndlp, did)) {
5653	data1 = (((uint32_t)ndlp->nlp_state << 24) |
5654	((uint32_t)ndlp->nlp_xri << 16) |
5655	((uint32_t)ndlp->nlp_type << 8)
5656	);
5657	lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE_VERBOSE,
5658	"0929 FIND node DID "
5659	"Data: x%px x%x x%x x%x x%x x%px\n",
5660	ndlp, ndlp->nlp_DID,
5661	ndlp->nlp_flag, data1, ndlp->nlp_rpi,
5662	ndlp->active_rrqs_xri_bitmap);
5663	return ndlp;
5664	}
5665	}
5666
5667	/* FIND node did <did> NOT FOUND */
5668	lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
5669	"0932 FIND node did x%x NOT FOUND.\n", did);
5670	return NULL;
5671	}
5672
5673	struct lpfc_nodelist *
5674	lpfc_findnode_did(struct lpfc_vport *vport, uint32_t did)
5675	{
5676	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
5677	struct lpfc_nodelist *ndlp;
5678	unsigned long iflags;
5679
5680	spin_lock_irqsave(shost->host_lock, iflags);
5681	ndlp = __lpfc_findnode_did(vport, did);
5682	spin_unlock_irqrestore(lock: shost->host_lock, flags: iflags);
5683	return ndlp;
5684	}
5685
5686	struct lpfc_nodelist *
5687	lpfc_findnode_mapped(struct lpfc_vport *vport)
5688	{
5689	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
5690	struct lpfc_nodelist *ndlp;
5691	uint32_t data1;
5692	unsigned long iflags;
5693
5694	spin_lock_irqsave(shost->host_lock, iflags);
5695
5696	list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
5697	if (ndlp->nlp_state == NLP_STE_UNMAPPED_NODE ||
5698	ndlp->nlp_state == NLP_STE_MAPPED_NODE) {
5699	data1 = (((uint32_t)ndlp->nlp_state << 24) |
5700	((uint32_t)ndlp->nlp_xri << 16) |
5701	((uint32_t)ndlp->nlp_type << 8) |
5702	((uint32_t)ndlp->nlp_rpi & 0xff));
5703	spin_unlock_irqrestore(lock: shost->host_lock, flags: iflags);
5704	lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE_VERBOSE,
5705	"2025 FIND node DID MAPPED "
5706	"Data: x%px x%x x%x x%x x%px\n",
5707	ndlp, ndlp->nlp_DID,
5708	ndlp->nlp_flag, data1,
5709	ndlp->active_rrqs_xri_bitmap);
5710	return ndlp;
5711	}
5712	}
5713	spin_unlock_irqrestore(lock: shost->host_lock, flags: iflags);
5714
5715	/* FIND node did <did> NOT FOUND */
5716	lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
5717	"2026 FIND mapped did NOT FOUND.\n");
5718	return NULL;
5719	}
5720
5721	struct lpfc_nodelist *
5722	lpfc_setup_disc_node(struct lpfc_vport *vport, uint32_t did)
5723	{
5724	struct lpfc_nodelist *ndlp;
5725
5726	ndlp = lpfc_findnode_did(vport, did);
5727	if (!ndlp) {
5728	if (vport->phba->nvmet_support)
5729	return NULL;
5730	if ((vport->fc_flag & FC_RSCN_MODE) != 0 &&
5731	lpfc_rscn_payload_check(vport, did) == 0)
5732	return NULL;
5733	ndlp = lpfc_nlp_init(vport, did);
5734	if (!ndlp)
5735	return NULL;
5736	lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
5737
5738	lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
5739	"6453 Setup New Node 2B_DISC x%x "
5740	"Data:x%x x%x x%x\n",
5741	ndlp->nlp_DID, ndlp->nlp_flag,
5742	ndlp->nlp_state, vport->fc_flag);
5743
5744	spin_lock_irq(lock: &ndlp->lock);
5745	ndlp->nlp_flag |= NLP_NPR_2B_DISC;
5746	spin_unlock_irq(lock: &ndlp->lock);
5747	return ndlp;
5748	}
5749
5750	/* The NVME Target does not want to actively manage an rport.
5751	* The goal is to allow the target to reset its state and clear
5752	* pending IO in preparation for the initiator to recover.
5753	*/
5754	if ((vport->fc_flag & FC_RSCN_MODE) &&
5755	!(vport->fc_flag & FC_NDISC_ACTIVE)) {
5756	if (lpfc_rscn_payload_check(vport, did)) {
5757
5758	/* Since this node is marked for discovery,
5759	* delay timeout is not needed.
5760	*/
5761	lpfc_cancel_retry_delay_tmo(vport, ndlp);
5762
5763	lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
5764	"6455 Setup RSCN Node 2B_DISC x%x "
5765	"Data:x%x x%x x%x\n",
5766	ndlp->nlp_DID, ndlp->nlp_flag,
5767	ndlp->nlp_state, vport->fc_flag);
5768
5769	/* NVME Target mode waits until rport is known to be
5770	* impacted by the RSCN before it transitions. No
5771	* active management - just go to NPR provided the
5772	* node had a valid login.
5773	*/
5774	if (vport->phba->nvmet_support)
5775	return ndlp;
5776
5777	/* If we've already received a PLOGI from this NPort
5778	* we don't need to try to discover it again.
5779	*/
5780	if (ndlp->nlp_flag & NLP_RCV_PLOGI &&
5781	!(ndlp->nlp_type &
5782	(NLP_FCP_TARGET | NLP_NVME_TARGET)))
5783	return NULL;
5784
5785	if (ndlp->nlp_state > NLP_STE_UNUSED_NODE &&
5786	ndlp->nlp_state < NLP_STE_PRLI_ISSUE) {
5787	lpfc_disc_state_machine(vport, ndlp, NULL,
5788	NLP_EVT_DEVICE_RECOVERY);
5789	}
5790
5791	spin_lock_irq(lock: &ndlp->lock);
5792	ndlp->nlp_flag |= NLP_NPR_2B_DISC;
5793	spin_unlock_irq(lock: &ndlp->lock);
5794	} else {
5795	lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
5796	"6456 Skip Setup RSCN Node x%x "
5797	"Data:x%x x%x x%x\n",
5798	ndlp->nlp_DID, ndlp->nlp_flag,
5799	ndlp->nlp_state, vport->fc_flag);
5800	ndlp = NULL;
5801	}
5802	} else {
5803	lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
5804	"6457 Setup Active Node 2B_DISC x%x "
5805	"Data:x%x x%x x%x\n",
5806	ndlp->nlp_DID, ndlp->nlp_flag,
5807	ndlp->nlp_state, vport->fc_flag);
5808
5809	/* If the initiator received a PLOGI from this NPort or if the
5810	* initiator is already in the process of discovery on it,
5811	* there's no need to try to discover it again.
5812	*/
5813	if (ndlp->nlp_state == NLP_STE_ADISC_ISSUE ||
5814	ndlp->nlp_state == NLP_STE_PLOGI_ISSUE ||
5815	(!vport->phba->nvmet_support &&
5816	ndlp->nlp_flag & NLP_RCV_PLOGI))
5817	return NULL;
5818
5819	if (vport->phba->nvmet_support)
5820	return ndlp;
5821
5822	/* Moving to NPR state clears unsolicited flags and
5823	* allows for rediscovery
5824	*/
5825	lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
5826
5827	spin_lock_irq(lock: &ndlp->lock);
5828	ndlp->nlp_flag |= NLP_NPR_2B_DISC;
5829	spin_unlock_irq(lock: &ndlp->lock);
5830	}
5831	return ndlp;
5832	}
5833
5834	/* Build a list of nodes to discover based on the loopmap */
5835	void
5836	lpfc_disc_list_loopmap(struct lpfc_vport *vport)
5837	{
5838	struct lpfc_hba *phba = vport->phba;
5839	int j;
5840	uint32_t alpa, index;
5841
5842	if (!lpfc_is_link_up(phba))
5843	return;
5844
5845	if (phba->fc_topology != LPFC_TOPOLOGY_LOOP)
5846	return;
5847
5848	/* Check for loop map present or not */
5849	if (phba->alpa_map[0]) {
5850	for (j = 1; j <= phba->alpa_map[0]; j++) {
5851	alpa = phba->alpa_map[j];
5852	if (((vport->fc_myDID & 0xff) == alpa) || (alpa == 0))
5853	continue;
5854	lpfc_setup_disc_node(vport, did: alpa);
5855	}
5856	} else {
5857	/* No alpamap, so try all alpa's */
5858	for (j = 0; j < FC_MAXLOOP; j++) {
5859	/* If cfg_scan_down is set, start from highest
5860	* ALPA (0xef) to lowest (0x1).
5861	*/
5862	if (vport->cfg_scan_down)
5863	index = j;
5864	else
5865	index = FC_MAXLOOP - j - 1;
5866	alpa = lpfcAlpaArray[index];
5867	if ((vport->fc_myDID & 0xff) == alpa)
5868	continue;
5869	lpfc_setup_disc_node(vport, did: alpa);
5870	}
5871	}
5872	return;
5873	}
5874
5875	/* SLI3 only */
5876	void
5877	lpfc_issue_clear_la(struct lpfc_hba *phba, struct lpfc_vport *vport)
5878	{
5879	LPFC_MBOXQ_t *mbox;
5880	struct lpfc_sli *psli = &phba->sli;
5881	struct lpfc_sli_ring *extra_ring = &psli->sli3_ring[LPFC_EXTRA_RING];
5882	struct lpfc_sli_ring *fcp_ring = &psli->sli3_ring[LPFC_FCP_RING];
5883	int rc;
5884
5885	/*
5886	* if it's not a physical port or if we already send
5887	* clear_la then don't send it.
5888	*/
5889	if ((phba->link_state >= LPFC_CLEAR_LA) ||
5890	(vport->port_type != LPFC_PHYSICAL_PORT) ||
5891	(phba->sli_rev == LPFC_SLI_REV4))
5892	return;
5893
5894	/* Link up discovery */
5895	if ((mbox = mempool_alloc(pool: phba->mbox_mem_pool, GFP_KERNEL)) != NULL) {
5896	phba->link_state = LPFC_CLEAR_LA;
5897	lpfc_clear_la(phba, mbox);
5898	mbox->mbox_cmpl = lpfc_mbx_cmpl_clear_la;
5899	mbox->vport = vport;
5900	rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
5901	if (rc == MBX_NOT_FINISHED) {
5902	mempool_free(element: mbox, pool: phba->mbox_mem_pool);
5903	lpfc_disc_flush_list(vport);
5904	extra_ring->flag &= ~LPFC_STOP_IOCB_EVENT;
5905	fcp_ring->flag &= ~LPFC_STOP_IOCB_EVENT;
5906	phba->link_state = LPFC_HBA_ERROR;
5907	}
5908	}
5909	}
5910
5911	/* Reg_vpi to tell firmware to resume normal operations */
5912	void
5913	lpfc_issue_reg_vpi(struct lpfc_hba *phba, struct lpfc_vport *vport)
5914	{
5915	LPFC_MBOXQ_t *regvpimbox;
5916
5917	regvpimbox = mempool_alloc(pool: phba->mbox_mem_pool, GFP_KERNEL);
5918	if (regvpimbox) {
5919	lpfc_reg_vpi(vport, regvpimbox);
5920	regvpimbox->mbox_cmpl = lpfc_mbx_cmpl_reg_vpi;
5921	regvpimbox->vport = vport;
5922	if (lpfc_sli_issue_mbox(phba, regvpimbox, MBX_NOWAIT)
5923	== MBX_NOT_FINISHED) {
5924	mempool_free(element: regvpimbox, pool: phba->mbox_mem_pool);
5925	}
5926	}
5927	}
5928
5929	/* Start Link up / RSCN discovery on NPR nodes */
5930	void
5931	lpfc_disc_start(struct lpfc_vport *vport)
5932	{
5933	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
5934	struct lpfc_hba *phba = vport->phba;
5935	uint32_t num_sent;
5936	uint32_t clear_la_pending;
5937
5938	if (!lpfc_is_link_up(phba)) {
5939	lpfc_printf_vlog(vport, KERN_INFO, LOG_SLI,
5940	"3315 Link is not up %x\n",
5941	phba->link_state);
5942	return;
5943	}
5944
5945	if (phba->link_state == LPFC_CLEAR_LA)
5946	clear_la_pending = 1;
5947	else
5948	clear_la_pending = 0;
5949
5950	if (vport->port_state < LPFC_VPORT_READY)
5951	vport->port_state = LPFC_DISC_AUTH;
5952
5953	lpfc_set_disctmo(vport);
5954
5955	vport->fc_prevDID = vport->fc_myDID;
5956	vport->num_disc_nodes = 0;
5957
5958	/* Start Discovery state <hba_state> */
5959	lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
5960	"0202 Start Discovery port state x%x "
5961	"flg x%x Data: x%x x%x x%x\n",
5962	vport->port_state, vport->fc_flag, vport->fc_plogi_cnt,
5963	vport->fc_adisc_cnt, vport->fc_npr_cnt);
5964
5965	/* First do ADISCs - if any */
5966	num_sent = lpfc_els_disc_adisc(vport);
5967
5968	if (num_sent)
5969	return;
5970
5971	/* Register the VPI for SLI3, NPIV only. */
5972	if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
5973	!(vport->fc_flag & FC_PT2PT) &&
5974	!(vport->fc_flag & FC_RSCN_MODE) &&
5975	(phba->sli_rev < LPFC_SLI_REV4)) {
5976	lpfc_issue_clear_la(phba, vport);
5977	lpfc_issue_reg_vpi(phba, vport);
5978	return;
5979	}
5980
5981	/*
5982	* For SLI2, we need to set port_state to READY and continue
5983	* discovery.
5984	*/
5985	if (vport->port_state < LPFC_VPORT_READY && !clear_la_pending) {
5986	/* If we get here, there is nothing to ADISC */
5987	lpfc_issue_clear_la(phba, vport);
5988
5989	if (!(vport->fc_flag & FC_ABORT_DISCOVERY)) {
5990	vport->num_disc_nodes = 0;
5991	/* go thru NPR nodes and issue ELS PLOGIs */
5992	if (vport->fc_npr_cnt)
5993	lpfc_els_disc_plogi(vport);
5994
5995	if (!vport->num_disc_nodes) {
5996	spin_lock_irq(lock: shost->host_lock);
5997	vport->fc_flag &= ~FC_NDISC_ACTIVE;
5998	spin_unlock_irq(lock: shost->host_lock);
5999	lpfc_can_disctmo(vport);
6000	}
6001	}
6002	vport->port_state = LPFC_VPORT_READY;
6003	} else {
6004	/* Next do PLOGIs - if any */
6005	num_sent = lpfc_els_disc_plogi(vport);
6006
6007	if (num_sent)
6008	return;
6009
6010	if (vport->fc_flag & FC_RSCN_MODE) {
6011	/* Check to see if more RSCNs came in while we
6012	* were processing this one.
6013	*/
6014	if ((vport->fc_rscn_id_cnt == 0) &&
6015	(!(vport->fc_flag & FC_RSCN_DISCOVERY))) {
6016	spin_lock_irq(lock: shost->host_lock);
6017	vport->fc_flag &= ~FC_RSCN_MODE;
6018	spin_unlock_irq(lock: shost->host_lock);
6019	lpfc_can_disctmo(vport);
6020	} else
6021	lpfc_els_handle_rscn(vport);
6022	}
6023	}
6024	return;
6025	}
6026
6027	/*
6028	* Ignore completion for all IOCBs on tx and txcmpl queue for ELS
6029	* ring the match the sppecified nodelist.
6030	*/
6031	static void
6032	lpfc_free_tx(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
6033	{
6034	LIST_HEAD(completions);
6035	struct lpfc_iocbq *iocb, *next_iocb;
6036	struct lpfc_sli_ring *pring;
6037	u32 ulp_command;
6038
6039	pring = lpfc_phba_elsring(phba);
6040	if (unlikely(!pring))
6041	return;
6042
6043	/* Error matching iocb on txq or txcmplq
6044	* First check the txq.
6045	*/
6046	spin_lock_irq(lock: &phba->hbalock);
6047	list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) {
6048	if (iocb->ndlp != ndlp)
6049	continue;
6050
6051	ulp_command = get_job_cmnd(phba, iocbq: iocb);
6052
6053	if (ulp_command == CMD_ELS_REQUEST64_CR ||
6054	ulp_command == CMD_XMIT_ELS_RSP64_CX) {
6055
6056	list_move_tail(list: &iocb->list, head: &completions);
6057	}
6058	}
6059
6060	/* Next check the txcmplq */
6061	list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq, list) {
6062	if (iocb->ndlp != ndlp)
6063	continue;
6064
6065	ulp_command = get_job_cmnd(phba, iocbq: iocb);
6066
6067	if (ulp_command == CMD_ELS_REQUEST64_CR ||
6068	ulp_command == CMD_XMIT_ELS_RSP64_CX) {
6069	lpfc_sli_issue_abort_iotag(phba, pring, iocb, NULL);
6070	}
6071	}
6072	spin_unlock_irq(lock: &phba->hbalock);
6073
6074	/* Make sure HBA is alive */
6075	lpfc_issue_hb_tmo(phba);
6076
6077	/* Cancel all the IOCBs from the completions list */
6078	lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT,
6079	IOERR_SLI_ABORTED);
6080	}
6081
6082	static void
6083	lpfc_disc_flush_list(struct lpfc_vport *vport)
6084	{
6085	struct lpfc_nodelist *ndlp, *next_ndlp;
6086	struct lpfc_hba *phba = vport->phba;
6087
6088	if (vport->fc_plogi_cnt || vport->fc_adisc_cnt) {
6089	list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes,
6090	nlp_listp) {
6091	if (ndlp->nlp_state == NLP_STE_PLOGI_ISSUE ||
6092	ndlp->nlp_state == NLP_STE_ADISC_ISSUE) {
6093	lpfc_free_tx(phba, ndlp);
6094	}
6095	}
6096	}
6097	}
6098
6099	/*
6100	* lpfc_notify_xport_npr - notifies xport of node disappearance
6101	* @vport: Pointer to Virtual Port object.
6102	*
6103	* Transitions all ndlps to NPR state. When lpfc_nlp_set_state
6104	* calls lpfc_nlp_state_cleanup, the ndlp->rport is unregistered
6105	* and transport notified that the node is gone.
6106	* Return Code:
6107	* none
6108	*/
6109	static void
6110	lpfc_notify_xport_npr(struct lpfc_vport *vport)
6111	{
6112	struct lpfc_nodelist *ndlp, *next_ndlp;
6113
6114	list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes,
6115	nlp_listp) {
6116	lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
6117	}
6118	}
6119	void
6120	lpfc_cleanup_discovery_resources(struct lpfc_vport *vport)
6121	{
6122	lpfc_els_flush_rscn(vport);
6123	lpfc_els_flush_cmd(vport);
6124	lpfc_disc_flush_list(vport);
6125	if (pci_channel_offline(pdev: vport->phba->pcidev))
6126	lpfc_notify_xport_npr(vport);
6127	}
6128
6129	/*****************************************************************************/
6130	/*
6131	* NAME: lpfc_disc_timeout
6132	*
6133	* FUNCTION: Fibre Channel driver discovery timeout routine.
6134	*
6135	* EXECUTION ENVIRONMENT: interrupt only
6136	*
6137	* CALLED FROM:
6138	* Timer function
6139	*
6140	* RETURNS:
6141	* none
6142	*/
6143	/*****************************************************************************/
6144	void
6145	lpfc_disc_timeout(struct timer_list *t)
6146	{
6147	struct lpfc_vport *vport = from_timer(vport, t, fc_disctmo);
6148	struct lpfc_hba *phba = vport->phba;
6149	uint32_t tmo_posted;
6150	unsigned long flags = 0;
6151
6152	if (unlikely(!phba))
6153	return;
6154
6155	spin_lock_irqsave(&vport->work_port_lock, flags);
6156	tmo_posted = vport->work_port_events & WORKER_DISC_TMO;
6157	if (!tmo_posted)
6158	vport->work_port_events |= WORKER_DISC_TMO;
6159	spin_unlock_irqrestore(lock: &vport->work_port_lock, flags);
6160
6161	if (!tmo_posted)
6162	lpfc_worker_wake_up(phba);
6163	return;
6164	}
6165
6166	static void
6167	lpfc_disc_timeout_handler(struct lpfc_vport *vport)
6168	{
6169	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
6170	struct lpfc_hba *phba = vport->phba;
6171	struct lpfc_sli *psli = &phba->sli;
6172	struct lpfc_nodelist *ndlp, *next_ndlp;
6173	LPFC_MBOXQ_t *initlinkmbox;
6174	int rc, clrlaerr = 0;
6175
6176	if (!(vport->fc_flag & FC_DISC_TMO))
6177	return;
6178
6179	spin_lock_irq(lock: shost->host_lock);
6180	vport->fc_flag &= ~FC_DISC_TMO;
6181	spin_unlock_irq(lock: shost->host_lock);
6182
6183	lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
6184	"disc timeout: state:x%x rtry:x%x flg:x%x",
6185	vport->port_state, vport->fc_ns_retry, vport->fc_flag);
6186
6187	switch (vport->port_state) {
6188
6189	case LPFC_LOCAL_CFG_LINK:
6190	/*
6191	* port_state is identically LPFC_LOCAL_CFG_LINK while
6192	* waiting for FAN timeout
6193	*/
6194	lpfc_printf_vlog(vport, KERN_WARNING, LOG_DISCOVERY,
6195	"0221 FAN timeout\n");
6196
6197	/* Start discovery by sending FLOGI, clean up old rpis */
6198	list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes,
6199	nlp_listp) {
6200	if (ndlp->nlp_state != NLP_STE_NPR_NODE)
6201	continue;
6202	if (ndlp->nlp_type & NLP_FABRIC) {
6203	/* Clean up the ndlp on Fabric connections */
6204	lpfc_drop_node(vport, ndlp);
6205
6206	} else if (!(ndlp->nlp_flag & NLP_NPR_ADISC)) {
6207	/* Fail outstanding IO now since device
6208	* is marked for PLOGI.
6209	*/
6210	lpfc_unreg_rpi(vport, ndlp);
6211	}
6212	}
6213	if (vport->port_state != LPFC_FLOGI) {
6214	if (phba->sli_rev <= LPFC_SLI_REV3)
6215	lpfc_initial_flogi(vport);
6216	else
6217	lpfc_issue_init_vfi(vport);
6218	return;
6219	}
6220	break;
6221
6222	case LPFC_FDISC:
6223	case LPFC_FLOGI:
6224	/* port_state is identically LPFC_FLOGI while waiting for FLOGI cmpl */
6225	/* Initial FLOGI timeout */
6226	lpfc_printf_vlog(vport, KERN_ERR,
6227	LOG_TRACE_EVENT,
6228	"0222 Initial %s timeout\n",
6229	vport->vpi ? "FDISC" : "FLOGI");
6230
6231	/* Assume no Fabric and go on with discovery.
6232	* Check for outstanding ELS FLOGI to abort.
6233	*/
6234
6235	/* FLOGI failed, so just use loop map to make discovery list */
6236	lpfc_disc_list_loopmap(vport);
6237
6238	/* Start discovery */
6239	lpfc_disc_start(vport);
6240	break;
6241
6242	case LPFC_FABRIC_CFG_LINK:
6243	/* hba_state is identically LPFC_FABRIC_CFG_LINK while waiting for
6244	NameServer login */
6245	lpfc_printf_vlog(vport, KERN_ERR,
6246	LOG_TRACE_EVENT,
6247	"0223 Timeout while waiting for "
6248	"NameServer login\n");
6249	/* Next look for NameServer ndlp */
6250	ndlp = lpfc_findnode_did(vport, NameServer_DID);
6251	if (ndlp)
6252	lpfc_els_abort(phba, ndlp);
6253
6254	/* ReStart discovery */
6255	goto restart_disc;
6256
6257	case LPFC_NS_QRY:
6258	/* Check for wait for NameServer Rsp timeout */
6259	lpfc_printf_vlog(vport, KERN_ERR,
6260	LOG_TRACE_EVENT,
6261	"0224 NameServer Query timeout "
6262	"Data: x%x x%x\n",
6263	vport->fc_ns_retry, LPFC_MAX_NS_RETRY);
6264
6265	if (vport->fc_ns_retry < LPFC_MAX_NS_RETRY) {
6266	/* Try it one more time */
6267	vport->fc_ns_retry++;
6268	vport->gidft_inp = 0;
6269	rc = lpfc_issue_gidft(vport);
6270	if (rc == 0)
6271	break;
6272	}
6273	vport->fc_ns_retry = 0;
6274
6275	restart_disc:
6276	/*
6277	* Discovery is over.
6278	* set port_state to PORT_READY if SLI2.
6279	* cmpl_reg_vpi will set port_state to READY for SLI3.
6280	*/
6281	if (phba->sli_rev < LPFC_SLI_REV4) {
6282	if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)
6283	lpfc_issue_reg_vpi(phba, vport);
6284	else {
6285	lpfc_issue_clear_la(phba, vport);
6286	vport->port_state = LPFC_VPORT_READY;
6287	}
6288	}
6289
6290	/* Setup and issue mailbox INITIALIZE LINK command */
6291	initlinkmbox = mempool_alloc(pool: phba->mbox_mem_pool, GFP_KERNEL);
6292	if (!initlinkmbox) {
6293	lpfc_printf_vlog(vport, KERN_ERR,
6294	LOG_TRACE_EVENT,
6295	"0206 Device Discovery "
6296	"completion error\n");
6297	phba->link_state = LPFC_HBA_ERROR;
6298	break;
6299	}
6300
6301	lpfc_linkdown(phba);
6302	lpfc_init_link(phba, initlinkmbox, phba->cfg_topology,
6303	phba->cfg_link_speed);
6304	initlinkmbox->u.mb.un.varInitLnk.lipsr_AL_PA = 0;
6305	initlinkmbox->vport = vport;
6306	initlinkmbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
6307	rc = lpfc_sli_issue_mbox(phba, initlinkmbox, MBX_NOWAIT);
6308	lpfc_set_loopback_flag(phba);
6309	if (rc == MBX_NOT_FINISHED)
6310	mempool_free(element: initlinkmbox, pool: phba->mbox_mem_pool);
6311
6312	break;
6313
6314	case LPFC_DISC_AUTH:
6315	/* Node Authentication timeout */
6316	lpfc_printf_vlog(vport, KERN_ERR,
6317	LOG_TRACE_EVENT,
6318	"0227 Node Authentication timeout\n");
6319	lpfc_disc_flush_list(vport);
6320
6321	/*
6322	* set port_state to PORT_READY if SLI2.
6323	* cmpl_reg_vpi will set port_state to READY for SLI3.
6324	*/
6325	if (phba->sli_rev < LPFC_SLI_REV4) {
6326	if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)
6327	lpfc_issue_reg_vpi(phba, vport);
6328	else { /* NPIV Not enabled */
6329	lpfc_issue_clear_la(phba, vport);
6330	vport->port_state = LPFC_VPORT_READY;
6331	}
6332	}
6333	break;
6334
6335	case LPFC_VPORT_READY:
6336	if (vport->fc_flag & FC_RSCN_MODE) {
6337	lpfc_printf_vlog(vport, KERN_ERR,
6338	LOG_TRACE_EVENT,
6339	"0231 RSCN timeout Data: x%x "
6340	"x%x x%x x%x\n",
6341	vport->fc_ns_retry, LPFC_MAX_NS_RETRY,
6342	vport->port_state, vport->gidft_inp);
6343
6344	/* Cleanup any outstanding ELS commands */
6345	lpfc_els_flush_cmd(vport);
6346
6347	lpfc_els_flush_rscn(vport);
6348	lpfc_disc_flush_list(vport);
6349	}
6350	break;
6351
6352	default:
6353	lpfc_printf_vlog(vport, KERN_ERR,
6354	LOG_TRACE_EVENT,
6355	"0273 Unexpected discovery timeout, "
6356	"vport State x%x\n", vport->port_state);
6357	break;
6358	}
6359
6360	switch (phba->link_state) {
6361	case LPFC_CLEAR_LA:
6362	/* CLEAR LA timeout */
6363	lpfc_printf_vlog(vport, KERN_ERR,
6364	LOG_TRACE_EVENT,
6365	"0228 CLEAR LA timeout\n");
6366	clrlaerr = 1;
6367	break;
6368
6369	case LPFC_LINK_UP:
6370	lpfc_issue_clear_la(phba, vport);
6371	fallthrough;
6372	case LPFC_LINK_UNKNOWN:
6373	case LPFC_WARM_START:
6374	case LPFC_INIT_START:
6375	case LPFC_INIT_MBX_CMDS:
6376	case LPFC_LINK_DOWN:
6377	case LPFC_HBA_ERROR:
6378	lpfc_printf_vlog(vport, KERN_ERR,
6379	LOG_TRACE_EVENT,
6380	"0230 Unexpected timeout, hba link "
6381	"state x%x\n", phba->link_state);
6382	clrlaerr = 1;
6383	break;
6384
6385	case LPFC_HBA_READY:
6386	break;
6387	}
6388
6389	if (clrlaerr) {
6390	lpfc_disc_flush_list(vport);
6391	if (phba->sli_rev != LPFC_SLI_REV4) {
6392	psli->sli3_ring[(LPFC_EXTRA_RING)].flag &=
6393	~LPFC_STOP_IOCB_EVENT;
6394	psli->sli3_ring[LPFC_FCP_RING].flag &=
6395	~LPFC_STOP_IOCB_EVENT;
6396	}
6397	vport->port_state = LPFC_VPORT_READY;
6398	}
6399	return;
6400	}
6401
6402	/*
6403	* This routine handles processing a NameServer REG_LOGIN mailbox
6404	* command upon completion. It is setup in the LPFC_MBOXQ
6405	* as the completion routine when the command is
6406	* handed off to the SLI layer.
6407	*/
6408	void
6409	lpfc_mbx_cmpl_fdmi_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
6410	{
6411	MAILBOX_t *mb = &pmb->u.mb;
6412	struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *)pmb->ctx_ndlp;
6413	struct lpfc_vport *vport = pmb->vport;
6414
6415	pmb->ctx_ndlp = NULL;
6416
6417	if (phba->sli_rev < LPFC_SLI_REV4)
6418	ndlp->nlp_rpi = mb->un.varWords[0];
6419	ndlp->nlp_flag |= NLP_RPI_REGISTERED;
6420	ndlp->nlp_type |= NLP_FABRIC;
6421	lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
6422	lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE | LOG_DISCOVERY,
6423	"0004 rpi:%x DID:%x flg:%x %d x%px\n",
6424	ndlp->nlp_rpi, ndlp->nlp_DID, ndlp->nlp_flag,
6425	kref_read(&ndlp->kref),
6426	ndlp);
6427	/*
6428	* Start issuing Fabric-Device Management Interface (FDMI) command to
6429	* 0xfffffa (FDMI well known port).
6430	* DHBA -> DPRT -> RHBA -> RPA (physical port)
6431	* DPRT -> RPRT (vports)
6432	*/
6433	if (vport->port_type == LPFC_PHYSICAL_PORT) {
6434	phba->link_flag &= ~LS_CT_VEN_RPA; /* For extra Vendor RPA */
6435	lpfc_fdmi_cmd(vport, ndlp, SLI_MGMT_DHBA, 0);
6436	} else {
6437	lpfc_fdmi_cmd(vport, ndlp, SLI_MGMT_DPRT, 0);
6438	}
6439
6440
6441	/* decrement the node reference count held for this callback
6442	* function.
6443	*/
6444	lpfc_nlp_put(ndlp);
6445	lpfc_mbox_rsrc_cleanup(phba, mbox: pmb, locked: MBOX_THD_UNLOCKED);
6446	return;
6447	}
6448
6449	static int
6450	lpfc_filter_by_rpi(struct lpfc_nodelist *ndlp, void *param)
6451	{
6452	uint16_t *rpi = param;
6453
6454	return ndlp->nlp_rpi == *rpi;
6455	}
6456
6457	static int
6458	lpfc_filter_by_wwpn(struct lpfc_nodelist *ndlp, void *param)
6459	{
6460	return memcmp(p: &ndlp->nlp_portname, q: param,
6461	size: sizeof(ndlp->nlp_portname)) == 0;
6462	}
6463
6464	static struct lpfc_nodelist *
6465	__lpfc_find_node(struct lpfc_vport *vport, node_filter filter, void *param)
6466	{
6467	struct lpfc_nodelist *ndlp;
6468
6469	list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
6470	if (filter(ndlp, param)) {
6471	lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE_VERBOSE,
6472	"3185 FIND node filter %ps DID "
6473	"ndlp x%px did x%x flg x%x st x%x "
6474	"xri x%x type x%x rpi x%x\n",
6475	filter, ndlp, ndlp->nlp_DID,
6476	ndlp->nlp_flag, ndlp->nlp_state,
6477	ndlp->nlp_xri, ndlp->nlp_type,
6478	ndlp->nlp_rpi);
6479	return ndlp;
6480	}
6481	}
6482	lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
6483	"3186 FIND node filter %ps NOT FOUND.\n", filter);
6484	return NULL;
6485	}
6486
6487	/*
6488	* This routine looks up the ndlp lists for the given RPI. If rpi found it
6489	* returns the node list element pointer else return NULL.
6490	*/
6491	struct lpfc_nodelist *
6492	__lpfc_findnode_rpi(struct lpfc_vport *vport, uint16_t rpi)
6493	{
6494	return __lpfc_find_node(vport, filter: lpfc_filter_by_rpi, param: &rpi);
6495	}
6496
6497	/*
6498	* This routine looks up the ndlp lists for the given WWPN. If WWPN found it
6499	* returns the node element list pointer else return NULL.
6500	*/
6501	struct lpfc_nodelist *
6502	lpfc_findnode_wwpn(struct lpfc_vport *vport, struct lpfc_name *wwpn)
6503	{
6504	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
6505	struct lpfc_nodelist *ndlp;
6506
6507	spin_lock_irq(lock: shost->host_lock);
6508	ndlp = __lpfc_find_node(vport, filter: lpfc_filter_by_wwpn, param: wwpn);
6509	spin_unlock_irq(lock: shost->host_lock);
6510	return ndlp;
6511	}
6512
6513	/*
6514	* This routine looks up the ndlp lists for the given RPI. If the rpi
6515	* is found, the routine returns the node element list pointer else
6516	* return NULL.
6517	*/
6518	struct lpfc_nodelist *
6519	lpfc_findnode_rpi(struct lpfc_vport *vport, uint16_t rpi)
6520	{
6521	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
6522	struct lpfc_nodelist *ndlp;
6523	unsigned long flags;
6524
6525	spin_lock_irqsave(shost->host_lock, flags);
6526	ndlp = __lpfc_findnode_rpi(vport, rpi);
6527	spin_unlock_irqrestore(lock: shost->host_lock, flags);
6528	return ndlp;
6529	}
6530
6531	/**
6532	* lpfc_find_vport_by_vpid - Find a vport on a HBA through vport identifier
6533	* @phba: pointer to lpfc hba data structure.
6534	* @vpi: the physical host virtual N_Port identifier.
6535	*
6536	* This routine finds a vport on a HBA (referred by @phba) through a
6537	* @vpi. The function walks the HBA's vport list and returns the address
6538	* of the vport with the matching @vpi.
6539	*
6540	* Return code
6541	* NULL - No vport with the matching @vpi found
6542	* Otherwise - Address to the vport with the matching @vpi.
6543	**/
6544	struct lpfc_vport *
6545	lpfc_find_vport_by_vpid(struct lpfc_hba *phba, uint16_t vpi)
6546	{
6547	struct lpfc_vport *vport;
6548	unsigned long flags;
6549	int i = 0;
6550
6551	/* The physical ports are always vpi 0 - translate is unnecessary. */
6552	if (vpi > 0) {
6553	/*
6554	* Translate the physical vpi to the logical vpi. The
6555	* vport stores the logical vpi.
6556	*/
6557	for (i = 0; i <= phba->max_vpi; i++) {
6558	if (vpi == phba->vpi_ids[i])
6559	break;
6560	}
6561
6562	if (i > phba->max_vpi) {
6563	lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
6564	"2936 Could not find Vport mapped "
6565	"to vpi %d\n", vpi);
6566	return NULL;
6567	}
6568	}
6569
6570	spin_lock_irqsave(&phba->port_list_lock, flags);
6571	list_for_each_entry(vport, &phba->port_list, listentry) {
6572	if (vport->vpi == i) {
6573	spin_unlock_irqrestore(lock: &phba->port_list_lock, flags);
6574	return vport;
6575	}
6576	}
6577	spin_unlock_irqrestore(lock: &phba->port_list_lock, flags);
6578	return NULL;
6579	}
6580
6581	struct lpfc_nodelist *
6582	lpfc_nlp_init(struct lpfc_vport *vport, uint32_t did)
6583	{
6584	struct lpfc_nodelist *ndlp;
6585	int rpi = LPFC_RPI_ALLOC_ERROR;
6586
6587	if (vport->phba->sli_rev == LPFC_SLI_REV4) {
6588	rpi = lpfc_sli4_alloc_rpi(vport->phba);
6589	if (rpi == LPFC_RPI_ALLOC_ERROR)
6590	return NULL;
6591	}
6592
6593	ndlp = mempool_alloc(pool: vport->phba->nlp_mem_pool, GFP_KERNEL);
6594	if (!ndlp) {
6595	if (vport->phba->sli_rev == LPFC_SLI_REV4)
6596	lpfc_sli4_free_rpi(vport->phba, rpi);
6597	return NULL;
6598	}
6599
6600	memset(ndlp, 0, sizeof (struct lpfc_nodelist));
6601
6602	spin_lock_init(&ndlp->lock);
6603
6604	lpfc_initialize_node(vport, ndlp, did);
6605	INIT_LIST_HEAD(list: &ndlp->nlp_listp);
6606	if (vport->phba->sli_rev == LPFC_SLI_REV4) {
6607	ndlp->nlp_rpi = rpi;
6608	lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE | LOG_DISCOVERY,
6609	"0007 Init New ndlp x%px, rpi:x%x DID:%x "
6610	"flg:x%x refcnt:%d\n",
6611	ndlp, ndlp->nlp_rpi, ndlp->nlp_DID,
6612	ndlp->nlp_flag, kref_read(&ndlp->kref));
6613
6614	ndlp->active_rrqs_xri_bitmap =
6615	mempool_alloc(pool: vport->phba->active_rrq_pool,
6616	GFP_KERNEL);
6617	if (ndlp->active_rrqs_xri_bitmap)
6618	memset(ndlp->active_rrqs_xri_bitmap, 0,
6619	ndlp->phba->cfg_rrq_xri_bitmap_sz);
6620	}
6621
6622
6623
6624	lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE,
6625	"node init: did:x%x",
6626	ndlp->nlp_DID, 0, 0);
6627
6628	return ndlp;
6629	}
6630
6631	/* This routine releases all resources associated with a specifc NPort's ndlp
6632	* and mempool_free's the nodelist.
6633	*/
6634	static void
6635	lpfc_nlp_release(struct kref *kref)
6636	{
6637	struct lpfc_nodelist *ndlp = container_of(kref, struct lpfc_nodelist,
6638	kref);
6639	struct lpfc_vport *vport = ndlp->vport;
6640
6641	lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
6642	"node release: did:x%x flg:x%x type:x%x",
6643	ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type);
6644
6645	lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
6646	"0279 %s: ndlp: x%px did %x refcnt:%d rpi:%x\n",
6647	__func__, ndlp, ndlp->nlp_DID,
6648	kref_read(&ndlp->kref), ndlp->nlp_rpi);
6649
6650	/* remove ndlp from action. */
6651	lpfc_cancel_retry_delay_tmo(vport, ndlp);
6652	lpfc_cleanup_node(vport, ndlp);
6653
6654	/* Not all ELS transactions have registered the RPI with the port.
6655	* In these cases the rpi usage is temporary and the node is
6656	* released when the WQE is completed. Catch this case to free the
6657	* RPI to the pool. Because this node is in the release path, a lock
6658	* is unnecessary. All references are gone and the node has been
6659	* dequeued.
6660	*/
6661	if (ndlp->nlp_flag & NLP_RELEASE_RPI) {
6662	if (ndlp->nlp_rpi != LPFC_RPI_ALLOC_ERROR &&
6663	!(ndlp->nlp_flag & (NLP_RPI_REGISTERED | NLP_UNREG_INP))) {
6664	lpfc_sli4_free_rpi(vport->phba, ndlp->nlp_rpi);
6665	ndlp->nlp_rpi = LPFC_RPI_ALLOC_ERROR;
6666	}
6667	}
6668
6669	/* The node is not freed back to memory, it is released to a pool so
6670	* the node fields need to be cleaned up.
6671	*/
6672	ndlp->vport = NULL;
6673	ndlp->nlp_state = NLP_STE_FREED_NODE;
6674	ndlp->nlp_flag = 0;
6675	ndlp->fc4_xpt_flags = 0;
6676
6677	/* free ndlp memory for final ndlp release */
6678	if (ndlp->phba->sli_rev == LPFC_SLI_REV4)
6679	mempool_free(element: ndlp->active_rrqs_xri_bitmap,
6680	pool: ndlp->phba->active_rrq_pool);
6681	mempool_free(element: ndlp, pool: ndlp->phba->nlp_mem_pool);
6682	}
6683
6684	/* This routine bumps the reference count for a ndlp structure to ensure
6685	* that one discovery thread won't free a ndlp while another discovery thread
6686	* is using it.
6687	*/
6688	struct lpfc_nodelist *
6689	lpfc_nlp_get(struct lpfc_nodelist *ndlp)
6690	{
6691	unsigned long flags;
6692
6693	if (ndlp) {
6694	lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
6695	"node get: did:x%x flg:x%x refcnt:x%x",
6696	ndlp->nlp_DID, ndlp->nlp_flag,
6697	kref_read(kref: &ndlp->kref));
6698
6699	/* The check of ndlp usage to prevent incrementing the
6700	* ndlp reference count that is in the process of being
6701	* released.
6702	*/
6703	spin_lock_irqsave(&ndlp->lock, flags);
6704	if (!kref_get_unless_zero(kref: &ndlp->kref)) {
6705	spin_unlock_irqrestore(lock: &ndlp->lock, flags);
6706	lpfc_printf_vlog(ndlp->vport, KERN_WARNING, LOG_NODE,
6707	"0276 %s: ndlp:x%px refcnt:%d\n",
6708	__func__, (void *)ndlp, kref_read(&ndlp->kref));
6709	return NULL;
6710	}
6711	spin_unlock_irqrestore(lock: &ndlp->lock, flags);
6712	} else {
6713	WARN_ONCE(!ndlp, "**** %s, get ref on NULL ndlp!", __func__);
6714	}
6715
6716	return ndlp;
6717	}
6718
6719	/* This routine decrements the reference count for a ndlp structure. If the
6720	* count goes to 0, this indicates the associated nodelist should be freed.
6721	*/
6722	int
6723	lpfc_nlp_put(struct lpfc_nodelist *ndlp)
6724	{
6725	if (ndlp) {
6726	lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
6727	"node put: did:x%x flg:x%x refcnt:x%x",
6728	ndlp->nlp_DID, ndlp->nlp_flag,
6729	kref_read(kref: &ndlp->kref));
6730	} else {
6731	WARN_ONCE(!ndlp, "**** %s, put ref on NULL ndlp!", __func__);
6732	}
6733
6734	return ndlp ? kref_put(kref: &ndlp->kref, release: lpfc_nlp_release) : 0;
6735	}
6736
6737	/**
6738	* lpfc_fcf_inuse - Check if FCF can be unregistered.
6739	* @phba: Pointer to hba context object.
6740	*
6741	* This function iterate through all FC nodes associated
6742	* will all vports to check if there is any node with
6743	* fc_rports associated with it. If there is an fc_rport
6744	* associated with the node, then the node is either in
6745	* discovered state or its devloss_timer is pending.
6746	*/
6747	static int
6748	lpfc_fcf_inuse(struct lpfc_hba *phba)
6749	{
6750	struct lpfc_vport **vports;
6751	int i, ret = 0;
6752	struct lpfc_nodelist *ndlp;
6753	struct Scsi_Host *shost;
6754
6755	vports = lpfc_create_vport_work_array(phba);
6756
6757	/* If driver cannot allocate memory, indicate fcf is in use */
6758	if (!vports)
6759	return 1;
6760
6761	for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
6762	shost = lpfc_shost_from_vport(vport: vports[i]);
6763	spin_lock_irq(lock: shost->host_lock);
6764	/*
6765	* IF the CVL_RCVD bit is not set then we have sent the
6766	* flogi.
6767	* If dev_loss fires while we are waiting we do not want to
6768	* unreg the fcf.
6769	*/
6770	if (!(vports[i]->fc_flag & FC_VPORT_CVL_RCVD)) {
6771	spin_unlock_irq(lock: shost->host_lock);
6772	ret = 1;
6773	goto out;
6774	}
6775	list_for_each_entry(ndlp, &vports[i]->fc_nodes, nlp_listp) {
6776	if (ndlp->rport &&
6777	(ndlp->rport->roles & FC_RPORT_ROLE_FCP_TARGET)) {
6778	ret = 1;
6779	spin_unlock_irq(lock: shost->host_lock);
6780	goto out;
6781	} else if (ndlp->nlp_flag & NLP_RPI_REGISTERED) {
6782	ret = 1;
6783	lpfc_printf_log(phba, KERN_INFO,
6784	LOG_NODE | LOG_DISCOVERY,
6785	"2624 RPI %x DID %x flag %x "
6786	"still logged in\n",
6787	ndlp->nlp_rpi, ndlp->nlp_DID,
6788	ndlp->nlp_flag);
6789	}
6790	}
6791	spin_unlock_irq(lock: shost->host_lock);
6792	}
6793	out:
6794	lpfc_destroy_vport_work_array(phba, vports);
6795	return ret;
6796	}
6797
6798	/**
6799	* lpfc_unregister_vfi_cmpl - Completion handler for unreg vfi.
6800	* @phba: Pointer to hba context object.
6801	* @mboxq: Pointer to mailbox object.
6802	*
6803	* This function frees memory associated with the mailbox command.
6804	*/
6805	void
6806	lpfc_unregister_vfi_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
6807	{
6808	struct lpfc_vport *vport = mboxq->vport;
6809	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
6810
6811	if (mboxq->u.mb.mbxStatus) {
6812	lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
6813	"2555 UNREG_VFI mbxStatus error x%x "
6814	"HBA state x%x\n",
6815	mboxq->u.mb.mbxStatus, vport->port_state);
6816	}
6817	spin_lock_irq(lock: shost->host_lock);
6818	phba->pport->fc_flag &= ~FC_VFI_REGISTERED;
6819	spin_unlock_irq(lock: shost->host_lock);
6820	mempool_free(element: mboxq, pool: phba->mbox_mem_pool);
6821	return;
6822	}
6823
6824	/**
6825	* lpfc_unregister_fcfi_cmpl - Completion handler for unreg fcfi.
6826	* @phba: Pointer to hba context object.
6827	* @mboxq: Pointer to mailbox object.
6828	*
6829	* This function frees memory associated with the mailbox command.
6830	*/
6831	static void
6832	lpfc_unregister_fcfi_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
6833	{
6834	struct lpfc_vport *vport = mboxq->vport;
6835
6836	if (mboxq->u.mb.mbxStatus) {
6837	lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
6838	"2550 UNREG_FCFI mbxStatus error x%x "
6839	"HBA state x%x\n",
6840	mboxq->u.mb.mbxStatus, vport->port_state);
6841	}
6842	mempool_free(element: mboxq, pool: phba->mbox_mem_pool);
6843	return;
6844	}
6845
6846	/**
6847	* lpfc_unregister_fcf_prep - Unregister fcf record preparation
6848	* @phba: Pointer to hba context object.
6849	*
6850	* This function prepare the HBA for unregistering the currently registered
6851	* FCF from the HBA. It performs unregistering, in order, RPIs, VPIs, and
6852	* VFIs.
6853	*/
6854	int
6855	lpfc_unregister_fcf_prep(struct lpfc_hba *phba)
6856	{
6857	struct lpfc_vport **vports;
6858	struct lpfc_nodelist *ndlp;
6859	struct Scsi_Host *shost;
6860	int i = 0, rc;
6861
6862	/* Unregister RPIs */
6863	if (lpfc_fcf_inuse(phba))
6864	lpfc_unreg_hba_rpis(phba);
6865
6866	/* At this point, all discovery is aborted */
6867	phba->pport->port_state = LPFC_VPORT_UNKNOWN;
6868
6869	/* Unregister VPIs */
6870	vports = lpfc_create_vport_work_array(phba);
6871	if (vports && (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED))
6872	for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
6873	/* Stop FLOGI/FDISC retries */
6874	ndlp = lpfc_findnode_did(vport: vports[i], Fabric_DID);
6875	if (ndlp)
6876	lpfc_cancel_retry_delay_tmo(vports[i], ndlp);
6877	lpfc_cleanup_pending_mbox(vports[i]);
6878	if (phba->sli_rev == LPFC_SLI_REV4)
6879	lpfc_sli4_unreg_all_rpis(vports[i]);
6880	lpfc_mbx_unreg_vpi(vport: vports[i]);
6881	shost = lpfc_shost_from_vport(vport: vports[i]);
6882	spin_lock_irq(lock: shost->host_lock);
6883	vports[i]->fc_flag |= FC_VPORT_NEEDS_INIT_VPI;
6884	vports[i]->vpi_state &= ~LPFC_VPI_REGISTERED;
6885	spin_unlock_irq(lock: shost->host_lock);
6886	}
6887	lpfc_destroy_vport_work_array(phba, vports);
6888	if (i == 0 && (!(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED))) {
6889	ndlp = lpfc_findnode_did(vport: phba->pport, Fabric_DID);
6890	if (ndlp)
6891	lpfc_cancel_retry_delay_tmo(phba->pport, ndlp);
6892	lpfc_cleanup_pending_mbox(phba->pport);
6893	if (phba->sli_rev == LPFC_SLI_REV4)
6894	lpfc_sli4_unreg_all_rpis(phba->pport);
6895	lpfc_mbx_unreg_vpi(vport: phba->pport);
6896	shost = lpfc_shost_from_vport(vport: phba->pport);
6897	spin_lock_irq(lock: shost->host_lock);
6898	phba->pport->fc_flag |= FC_VPORT_NEEDS_INIT_VPI;
6899	phba->pport->vpi_state &= ~LPFC_VPI_REGISTERED;
6900	spin_unlock_irq(lock: shost->host_lock);
6901	}
6902
6903	/* Cleanup any outstanding ELS commands */
6904	lpfc_els_flush_all_cmd(phba);
6905
6906	/* Unregister the physical port VFI */
6907	rc = lpfc_issue_unreg_vfi(phba->pport);
6908	return rc;
6909	}
6910
6911	/**
6912	* lpfc_sli4_unregister_fcf - Unregister currently registered FCF record
6913	* @phba: Pointer to hba context object.
6914	*
6915	* This function issues synchronous unregister FCF mailbox command to HBA to
6916	* unregister the currently registered FCF record. The driver does not reset
6917	* the driver FCF usage state flags.
6918	*
6919	* Return 0 if successfully issued, none-zero otherwise.
6920	*/
6921	int
6922	lpfc_sli4_unregister_fcf(struct lpfc_hba *phba)
6923	{
6924	LPFC_MBOXQ_t *mbox;
6925	int rc;
6926
6927	mbox = mempool_alloc(pool: phba->mbox_mem_pool, GFP_KERNEL);
6928	if (!mbox) {
6929	lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
6930	"2551 UNREG_FCFI mbox allocation failed"
6931	"HBA state x%x\n", phba->pport->port_state);
6932	return -ENOMEM;
6933	}
6934	lpfc_unreg_fcfi(mbox, phba->fcf.fcfi);
6935	mbox->vport = phba->pport;
6936	mbox->mbox_cmpl = lpfc_unregister_fcfi_cmpl;
6937	rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
6938
6939	if (rc == MBX_NOT_FINISHED) {
6940	lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
6941	"2552 Unregister FCFI command failed rc x%x "
6942	"HBA state x%x\n",
6943	rc, phba->pport->port_state);
6944	return -EINVAL;
6945	}
6946	return 0;
6947	}
6948
6949	/**
6950	* lpfc_unregister_fcf_rescan - Unregister currently registered fcf and rescan
6951	* @phba: Pointer to hba context object.
6952	*
6953	* This function unregisters the currently reigstered FCF. This function
6954	* also tries to find another FCF for discovery by rescan the HBA FCF table.
6955	*/
6956	void
6957	lpfc_unregister_fcf_rescan(struct lpfc_hba *phba)
6958	{
6959	int rc;
6960
6961	/* Preparation for unregistering fcf */
6962	rc = lpfc_unregister_fcf_prep(phba);
6963	if (rc) {
6964	lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
6965	"2748 Failed to prepare for unregistering "
6966	"HBA's FCF record: rc=%d\n", rc);
6967	return;
6968	}
6969
6970	/* Now, unregister FCF record and reset HBA FCF state */
6971	rc = lpfc_sli4_unregister_fcf(phba);
6972	if (rc)
6973	return;
6974	/* Reset HBA FCF states after successful unregister FCF */
6975	spin_lock_irq(lock: &phba->hbalock);
6976	phba->fcf.fcf_flag = 0;
6977	spin_unlock_irq(lock: &phba->hbalock);
6978	phba->fcf.current_rec.flag = 0;
6979
6980	/*
6981	* If driver is not unloading, check if there is any other
6982	* FCF record that can be used for discovery.
6983	*/
6984	if ((phba->pport->load_flag & FC_UNLOADING) ||
6985	(phba->link_state < LPFC_LINK_UP))
6986	return;
6987
6988	/* This is considered as the initial FCF discovery scan */
6989	spin_lock_irq(lock: &phba->hbalock);
6990	phba->fcf.fcf_flag |= FCF_INIT_DISC;
6991	spin_unlock_irq(lock: &phba->hbalock);
6992
6993	/* Reset FCF roundrobin bmask for new discovery */
6994	lpfc_sli4_clear_fcf_rr_bmask(phba);
6995
6996	rc = lpfc_sli4_fcf_scan_read_fcf_rec(phba, LPFC_FCOE_FCF_GET_FIRST);
6997
6998	if (rc) {
6999	spin_lock_irq(lock: &phba->hbalock);
7000	phba->fcf.fcf_flag &= ~FCF_INIT_DISC;
7001	spin_unlock_irq(lock: &phba->hbalock);
7002	lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
7003	"2553 lpfc_unregister_unused_fcf failed "
7004	"to read FCF record HBA state x%x\n",
7005	phba->pport->port_state);
7006	}
7007	}
7008
7009	/**
7010	* lpfc_unregister_fcf - Unregister the currently registered fcf record
7011	* @phba: Pointer to hba context object.
7012	*
7013	* This function just unregisters the currently reigstered FCF. It does not
7014	* try to find another FCF for discovery.
7015	*/
7016	void
7017	lpfc_unregister_fcf(struct lpfc_hba *phba)
7018	{
7019	int rc;
7020
7021	/* Preparation for unregistering fcf */
7022	rc = lpfc_unregister_fcf_prep(phba);
7023	if (rc) {
7024	lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
7025	"2749 Failed to prepare for unregistering "
7026	"HBA's FCF record: rc=%d\n", rc);
7027	return;
7028	}
7029
7030	/* Now, unregister FCF record and reset HBA FCF state */
7031	rc = lpfc_sli4_unregister_fcf(phba);
7032	if (rc)
7033	return;
7034	/* Set proper HBA FCF states after successful unregister FCF */
7035	spin_lock_irq(lock: &phba->hbalock);
7036	phba->fcf.fcf_flag &= ~FCF_REGISTERED;
7037	spin_unlock_irq(lock: &phba->hbalock);
7038	}
7039
7040	/**
7041	* lpfc_unregister_unused_fcf - Unregister FCF if all devices are disconnected.
7042	* @phba: Pointer to hba context object.
7043	*
7044	* This function check if there are any connected remote port for the FCF and
7045	* if all the devices are disconnected, this function unregister FCFI.
7046	* This function also tries to use another FCF for discovery.
7047	*/
7048	void
7049	lpfc_unregister_unused_fcf(struct lpfc_hba *phba)
7050	{
7051	/*
7052	* If HBA is not running in FIP mode, if HBA does not support
7053	* FCoE, if FCF discovery is ongoing, or if FCF has not been
7054	* registered, do nothing.
7055	*/
7056	spin_lock_irq(lock: &phba->hbalock);
7057	if (!(phba->hba_flag & HBA_FCOE_MODE) ||
7058	!(phba->fcf.fcf_flag & FCF_REGISTERED) ||
7059	!(phba->hba_flag & HBA_FIP_SUPPORT) ||
7060	(phba->fcf.fcf_flag & FCF_DISCOVERY) ||
7061	(phba->pport->port_state == LPFC_FLOGI)) {
7062	spin_unlock_irq(lock: &phba->hbalock);
7063	return;
7064	}
7065	spin_unlock_irq(lock: &phba->hbalock);
7066
7067	if (lpfc_fcf_inuse(phba))
7068	return;
7069
7070	lpfc_unregister_fcf_rescan(phba);
7071	}
7072
7073	/**
7074	* lpfc_read_fcf_conn_tbl - Create driver FCF connection table.
7075	* @phba: Pointer to hba context object.
7076	* @buff: Buffer containing the FCF connection table as in the config
7077	* region.
7078	* This function create driver data structure for the FCF connection
7079	* record table read from config region 23.
7080	*/
7081	static void
7082	lpfc_read_fcf_conn_tbl(struct lpfc_hba *phba,
7083	uint8_t *buff)
7084	{
7085	struct lpfc_fcf_conn_entry *conn_entry, *next_conn_entry;
7086	struct lpfc_fcf_conn_hdr *conn_hdr;
7087	struct lpfc_fcf_conn_rec *conn_rec;
7088	uint32_t record_count;
7089	int i;
7090
7091	/* Free the current connect table */
7092	list_for_each_entry_safe(conn_entry, next_conn_entry,
7093	&phba->fcf_conn_rec_list, list) {
7094	list_del_init(entry: &conn_entry->list);
7095	kfree(objp: conn_entry);
7096	}
7097
7098	conn_hdr = (struct lpfc_fcf_conn_hdr *) buff;
7099	record_count = conn_hdr->length * sizeof(uint32_t)/
7100	sizeof(struct lpfc_fcf_conn_rec);
7101
7102	conn_rec = (struct lpfc_fcf_conn_rec *)
7103	(buff + sizeof(struct lpfc_fcf_conn_hdr));
7104
7105	for (i = 0; i < record_count; i++) {
7106	if (!(conn_rec[i].flags & FCFCNCT_VALID))
7107	continue;
7108	conn_entry = kzalloc(size: sizeof(struct lpfc_fcf_conn_entry),
7109	GFP_KERNEL);
7110	if (!conn_entry) {
7111	lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
7112	"2566 Failed to allocate connection"
7113	" table entry\n");
7114	return;
7115	}
7116
7117	memcpy(&conn_entry->conn_rec, &conn_rec[i],
7118	sizeof(struct lpfc_fcf_conn_rec));
7119	list_add_tail(new: &conn_entry->list,
7120	head: &phba->fcf_conn_rec_list);
7121	}
7122
7123	if (!list_empty(head: &phba->fcf_conn_rec_list)) {
7124	i = 0;
7125	list_for_each_entry(conn_entry, &phba->fcf_conn_rec_list,
7126	list) {
7127	conn_rec = &conn_entry->conn_rec;
7128	lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
7129	"3345 FCF connection list rec[%02d]: "
7130	"flags:x%04x, vtag:x%04x, "
7131	"fabric_name:x%02x:%02x:%02x:%02x:"
7132	"%02x:%02x:%02x:%02x, "
7133	"switch_name:x%02x:%02x:%02x:%02x:"
7134	"%02x:%02x:%02x:%02x\n", i++,
7135	conn_rec->flags, conn_rec->vlan_tag,
7136	conn_rec->fabric_name[0],
7137	conn_rec->fabric_name[1],
7138	conn_rec->fabric_name[2],
7139	conn_rec->fabric_name[3],
7140	conn_rec->fabric_name[4],
7141	conn_rec->fabric_name[5],
7142	conn_rec->fabric_name[6],
7143	conn_rec->fabric_name[7],
7144	conn_rec->switch_name[0],
7145	conn_rec->switch_name[1],
7146	conn_rec->switch_name[2],
7147	conn_rec->switch_name[3],
7148	conn_rec->switch_name[4],
7149	conn_rec->switch_name[5],
7150	conn_rec->switch_name[6],
7151	conn_rec->switch_name[7]);
7152	}
7153	}
7154	}
7155
7156	/**
7157	* lpfc_read_fcoe_param - Read FCoe parameters from conf region..
7158	* @phba: Pointer to hba context object.
7159	* @buff: Buffer containing the FCoE parameter data structure.
7160	*
7161	* This function update driver data structure with config
7162	* parameters read from config region 23.
7163	*/
7164	static void
7165	lpfc_read_fcoe_param(struct lpfc_hba *phba,
7166	uint8_t *buff)
7167	{
7168	struct lpfc_fip_param_hdr *fcoe_param_hdr;
7169	struct lpfc_fcoe_params *fcoe_param;
7170
7171	fcoe_param_hdr = (struct lpfc_fip_param_hdr *)
7172	buff;
7173	fcoe_param = (struct lpfc_fcoe_params *)
7174	(buff + sizeof(struct lpfc_fip_param_hdr));
7175
7176	if ((fcoe_param_hdr->parm_version != FIPP_VERSION) ||
7177	(fcoe_param_hdr->length != FCOE_PARAM_LENGTH))
7178	return;
7179
7180	if (fcoe_param_hdr->parm_flags & FIPP_VLAN_VALID) {
7181	phba->valid_vlan = 1;
7182	phba->vlan_id = le16_to_cpu(fcoe_param->vlan_tag) &
7183	0xFFF;
7184	}
7185
7186	phba->fc_map[0] = fcoe_param->fc_map[0];
7187	phba->fc_map[1] = fcoe_param->fc_map[1];
7188	phba->fc_map[2] = fcoe_param->fc_map[2];
7189	return;
7190	}
7191
7192	/**
7193	* lpfc_get_rec_conf23 - Get a record type in config region data.
7194	* @buff: Buffer containing config region 23 data.
7195	* @size: Size of the data buffer.
7196	* @rec_type: Record type to be searched.
7197	*
7198	* This function searches config region data to find the beginning
7199	* of the record specified by record_type. If record found, this
7200	* function return pointer to the record else return NULL.
7201	*/
7202	static uint8_t *
7203	lpfc_get_rec_conf23(uint8_t *buff, uint32_t size, uint8_t rec_type)
7204	{
7205	uint32_t offset = 0, rec_length;
7206
7207	if ((buff[0] == LPFC_REGION23_LAST_REC) ||
7208	(size < sizeof(uint32_t)))
7209	return NULL;
7210
7211	rec_length = buff[offset + 1];
7212
7213	/*
7214	* One TLV record has one word header and number of data words
7215	* specified in the rec_length field of the record header.
7216	*/
7217	while ((offset + rec_length * sizeof(uint32_t) + sizeof(uint32_t))
7218	<= size) {
7219	if (buff[offset] == rec_type)
7220	return &buff[offset];
7221
7222	if (buff[offset] == LPFC_REGION23_LAST_REC)
7223	return NULL;
7224
7225	offset += rec_length * sizeof(uint32_t) + sizeof(uint32_t);
7226	rec_length = buff[offset + 1];
7227	}
7228	return NULL;
7229	}
7230
7231	/**
7232	* lpfc_parse_fcoe_conf - Parse FCoE config data read from config region 23.
7233	* @phba: Pointer to lpfc_hba data structure.
7234	* @buff: Buffer containing config region 23 data.
7235	* @size: Size of the data buffer.
7236	*
7237	* This function parses the FCoE config parameters in config region 23 and
7238	* populate driver data structure with the parameters.
7239	*/
7240	void
7241	lpfc_parse_fcoe_conf(struct lpfc_hba *phba,
7242	uint8_t *buff,
7243	uint32_t size)
7244	{
7245	uint32_t offset = 0;
7246	uint8_t *rec_ptr;
7247
7248	/*
7249	* If data size is less than 2 words signature and version cannot be
7250	* verified.
7251	*/
7252	if (size < 2*sizeof(uint32_t))
7253	return;
7254
7255	/* Check the region signature first */
7256	if (memcmp(p: buff, LPFC_REGION23_SIGNATURE, size: 4)) {
7257	lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
7258	"2567 Config region 23 has bad signature\n");
7259	return;
7260	}
7261
7262	offset += 4;
7263
7264	/* Check the data structure version */
7265	if (buff[offset] != LPFC_REGION23_VERSION) {
7266	lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
7267	"2568 Config region 23 has bad version\n");
7268	return;
7269	}
7270	offset += 4;
7271
7272	/* Read FCoE param record */
7273	rec_ptr = lpfc_get_rec_conf23(buff: &buff[offset],
7274	size: size - offset, FCOE_PARAM_TYPE);
7275	if (rec_ptr)
7276	lpfc_read_fcoe_param(phba, buff: rec_ptr);
7277
7278	/* Read FCF connection table */
7279	rec_ptr = lpfc_get_rec_conf23(buff: &buff[offset],
7280	size: size - offset, FCOE_CONN_TBL_TYPE);
7281	if (rec_ptr)
7282	lpfc_read_fcf_conn_tbl(phba, buff: rec_ptr);
7283
7284	}
7285
7286	/*
7287	* lpfc_error_lost_link - IO failure from link event or FW reset check.
7288	*
7289	* @vport: Pointer to lpfc_vport data structure.
7290	* @ulp_status: IO completion status.
7291	* @ulp_word4: Reason code for the ulp_status.
7292	*
7293	* This function evaluates the ulp_status and ulp_word4 values
7294	* for specific error values that indicate an internal link fault
7295	* or fw reset event for the completing IO. Callers require this
7296	* common data to decide next steps on the IO.
7297	*
7298	* Return:
7299	* false - No link or reset error occurred.
7300	* true - A link or reset error occurred.
7301	*/
7302	bool
7303	lpfc_error_lost_link(struct lpfc_vport *vport, u32 ulp_status, u32 ulp_word4)
7304	{
7305	/* Mask off the extra port data to get just the reason code. */
7306	u32 rsn_code = IOERR_PARAM_MASK & ulp_word4;
7307
7308	if (ulp_status == IOSTAT_LOCAL_REJECT &&
7309	(rsn_code == IOERR_SLI_ABORTED ||
7310	rsn_code == IOERR_LINK_DOWN ||
7311	rsn_code == IOERR_SLI_DOWN)) {
7312	lpfc_printf_vlog(vport, KERN_WARNING, LOG_SLI | LOG_ELS,
7313	"0408 Report link error true: <x%x:x%x>\n",
7314	ulp_status, ulp_word4);
7315	return true;
7316	}
7317
7318	return false;
7319	}
7320