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
lpfc_valid_xpt_node(struct lpfc_nodelist * ndlp)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
lpfc_rport_invalid(struct fc_rport * rport)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
lpfc_terminate_rport_io(struct fc_rport * rport)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, ndlp->nlp_sid, 0, LPFC_CTX_TGT);
145 }
146 
147 /*
148  * This function will be called when dev_loss_tmo fire.
149  */
150 void
lpfc_dev_loss_tmo_callbk(struct fc_rport * rport)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(&ndlp->lock, 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(&ndlp->lock, iflags);
206 			lpfc_nlp_put(ndlp);
207 			return;
208 		}
209 
210 		spin_unlock_irqrestore(&ndlp->lock, 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(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(&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(&ndlp->lock, 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(&evtp->evt_listp, &phba->work_list);
260 			lpfc_worker_wake_up(phba);
261 		}
262 		spin_unlock_irqrestore(&phba->hbalock, 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(&ndlp->lock, 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  **/
lpfc_check_inactive_vmid_one(struct lpfc_vport * vport)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, vmp, false);
331 				else
332 					r = lpfc_vmid_cmd(vport,
333 							  SLI_CTAS_DAPP_IDENT,
334 							  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(ht->last_io_time);
345 					ht->last_io_time = NULL;
346 					hash_del(&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 
lpfc_check_inactive_vmid(struct lpfc_hba * phba)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
lpfc_check_nlp_post_devloss(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp)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(&ndlp->lock, 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(&ndlp->lock, 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
lpfc_dev_loss_tmo_handler(struct lpfc_nodelist * ndlp)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(&ndlp->lock, 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(&ndlp->lock, 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(&ndlp->lock, 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(&ndlp->lock, 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, ndlp->nlp_sid, 0, 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(&ndlp->lock, 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 
lpfc_check_vmid_qfpa_issue(struct lpfc_hba * phba)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
lpfc_sli4_post_dev_loss_tmo_handler(struct lpfc_hba * phba,int fcf_inuse,uint32_t nlp_did)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(&phba->hbalock);
658 		if (phba->fcf.fcf_flag & FCF_DISCOVERY) {
659 			if (phba->hba_flag & HBA_DEVLOSS_TMO) {
660 				spin_unlock_irq(&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(&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(&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(&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 *
lpfc_alloc_fast_evt(struct lpfc_hba * phba)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(&phba->fast_event_count) > LPFC_MAX_EVT_COUNT)
712 		return NULL;
713 
714 	ret = kzalloc(sizeof(struct lpfc_fast_path_event),
715 			GFP_ATOMIC);
716 	if (ret) {
717 		atomic_inc(&phba->fast_event_count);
718 		INIT_LIST_HEAD(&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
lpfc_free_fast_evt(struct lpfc_hba * phba,struct lpfc_fast_path_event * evt)733 lpfc_free_fast_evt(struct lpfc_hba *phba,
734 		struct lpfc_fast_path_event *evt) {
735 
736 	atomic_dec(&phba->fast_event_count);
737 	kfree(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
lpfc_send_fastpath_evt(struct lpfc_hba * phba,struct lpfc_work_evt * evtp)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(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, 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, fast_evt_data);
798 			return;
799 		}
800 	} else {
801 		lpfc_free_fast_evt(phba, 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 			fc_get_event_number(),
808 			evt_data_size,
809 			evt_data,
810 			LPFC_NL_VENDOR_ID);
811 
812 	lpfc_free_fast_evt(phba, fast_evt_data);
813 	return;
814 }
815 
816 static void
lpfc_work_list_done(struct lpfc_hba * phba)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(&phba->hbalock);
827 	while (!list_empty(&phba->work_list)) {
828 		list_remove_head((&phba->work_list), evtp, typeof(*evtp),
829 				 evt_listp);
830 		spin_unlock_irq(&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(evtp);
920 		spin_lock_irq(&phba->hbalock);
921 	}
922 	spin_unlock_irq(&phba->hbalock);
923 
924 }
925 
926 static void
lpfc_work_done(struct lpfc_hba * phba)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(&phba->hbalock);
938 	ha_copy = phba->work_ha;
939 	phba->work_ha = 0;
940 	spin_unlock_irq(&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(&phba->hbalock);
990 			phba->hba_flag &= ~HBA_POST_RECEIVE_BUFFER;
991 			spin_unlock_irq(&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(&vport->work_port_lock);
1012 			work_port_events = vport->work_port_events;
1013 			vport->work_port_events &= ~work_port_events;
1014 			spin_unlock_irq(&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, &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(&phba->hbalock);
1064 			control = readl(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(control, phba->HCregaddr);
1072 				readl(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(&phba->hbalock);
1079 		}
1080 	}
1081 	lpfc_work_list_done(phba);
1082 }
1083 
1084 int
lpfc_do_work(void * p)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
lpfc_workq_post_event(struct lpfc_hba * phba,void * arg1,void * arg2,uint32_t evt)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(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(&evtp->evt_listp, &phba->work_list);
1142 	spin_unlock_irqrestore(&phba->hbalock, flags);
1143 
1144 	lpfc_worker_wake_up(phba);
1145 
1146 	return 1;
1147 }
1148 
1149 void
lpfc_cleanup_rpis(struct lpfc_vport * vport,int remove)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(shost->host_lock);
1184 		vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
1185 		spin_unlock_irq(shost->host_lock);
1186 	}
1187 }
1188 
1189 void
lpfc_port_link_failure(struct lpfc_vport * vport)1190 lpfc_port_link_failure(struct lpfc_vport *vport)
1191 {
1192 	lpfc_vport_set_state(vport, 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, 0);
1204 
1205 	/* Turn off discovery timer if its running */
1206 	lpfc_can_disctmo(vport);
1207 }
1208 
1209 void
lpfc_linkdown_port(struct lpfc_vport * vport)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, fc_get_event_number(),
1217 				   FCH_EVT_LINKDOWN, 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(shost->host_lock);
1227 	vport->fc_flag &= ~FC_DISC_DELAYED;
1228 	spin_unlock_irq(shost->host_lock);
1229 	del_timer_sync(&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
lpfc_linkdown(struct lpfc_hba * phba)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(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(&phba->hbalock);
1262 	phba->fcf.fcf_flag &= ~(FCF_AVAILABLE | FCF_SCAN_DONE);
1263 	spin_unlock_irq(&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(shost->host_lock);
1277 		phba->pport->fc_flag &= ~FC_LBIT;
1278 		spin_unlock_irq(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(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(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(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(mb, 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(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(mb, phba->mbox_mem_pool);
1325 			}
1326 		}
1327 		spin_lock_irq(shost->host_lock);
1328 		phba->pport->fc_flag &= ~(FC_PT2PT | FC_PT2PT_PLOGI);
1329 		phba->pport->rcv_flogi_cnt = 0;
1330 		spin_unlock_irq(shost->host_lock);
1331 	}
1332 	return 0;
1333 }
1334 
1335 static void
lpfc_linkup_cleanup_nodes(struct lpfc_vport * vport)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
lpfc_linkup_port(struct lpfc_vport * vport)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, fc_get_event_number(),
1381 				   FCH_EVT_LINKUP, 0);
1382 
1383 	spin_lock_irq(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(shost->host_lock);
1394 	lpfc_setup_fdmi_mask(vport);
1395 
1396 	lpfc_linkup_cleanup_nodes(vport);
1397 }
1398 
1399 static int
lpfc_linkup(struct lpfc_hba * phba)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(phba->pport);
1405 
1406 	phba->link_state = LPFC_LINK_UP;
1407 
1408 	/* Unblock fabric iocbs if they are blocked */
1409 	clear_bit(FABRIC_COMANDS_BLOCKED, &phba->bit_flags);
1410 	del_timer_sync(&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(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(shost->host_lock);
1423 	phba->pport->rcv_flogi_cnt = 0;
1424 	spin_unlock_irq(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
lpfc_mbx_cmpl_clear_la(struct lpfc_hba * phba,LPFC_MBOXQ_t * pmb)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(&phba->hbalock);
1466 	psli->sli_flag |= LPFC_PROCESS_LA;
1467 	control = readl(phba->HCregaddr);
1468 	control |= HC_LAINT_ENA;
1469 	writel(control, phba->HCregaddr);
1470 	readl(phba->HCregaddr); /* flush */
1471 	spin_unlock_irq(&phba->hbalock);
1472 	mempool_free(pmb, 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(pmb, phba->mbox_mem_pool);
1480 
1481 	spin_lock_irq(shost->host_lock);
1482 	vport->fc_flag &= ~FC_ABORT_DISCOVERY;
1483 	spin_unlock_irq(shost->host_lock);
1484 
1485 	lpfc_can_disctmo(vport);
1486 
1487 	/* turn on Link Attention interrupts */
1488 
1489 	spin_lock_irq(&phba->hbalock);
1490 	psli->sli_flag |= LPFC_PROCESS_LA;
1491 	control = readl(phba->HCregaddr);
1492 	control |= HC_LAINT_ENA;
1493 	writel(control, phba->HCregaddr);
1494 	readl(phba->HCregaddr); /* flush */
1495 	spin_unlock_irq(&phba->hbalock);
1496 
1497 	return;
1498 }
1499 
1500 void
lpfc_mbx_cmpl_local_config_link(struct lpfc_hba * phba,LPFC_MBOXQ_t * pmb)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(pmb, 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(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(sparam_mb, 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, sparam_mb,
1554 						       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
lpfc_sli4_clear_fcf_rr_bmask(struct lpfc_hba * phba)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(&phba->hbalock);
1599 	list_for_each_entry_safe(fcf_pri, next_fcf_pri,
1600 				&phba->fcf.fcf_pri_list, list) {
1601 		list_del_init(&fcf_pri->list);
1602 		fcf_pri->fcf_rec.flag = 0;
1603 	}
1604 	spin_unlock_irq(&phba->hbalock);
1605 }
1606 static void
lpfc_mbx_cmpl_reg_fcfi(struct lpfc_hba * phba,LPFC_MBOXQ_t * mboxq)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(&phba->hbalock);
1623 	phba->fcf.fcf_flag |= FCF_REGISTERED;
1624 	spin_unlock_irq(&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(&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(&phba->hbalock);
1638 		lpfc_issue_init_vfi(vport);
1639 		goto out;
1640 	}
1641 	spin_unlock_irq(&phba->hbalock);
1642 	goto out;
1643 
1644 fail_out:
1645 	spin_lock_irq(&phba->hbalock);
1646 	phba->hba_flag &= ~FCF_RR_INPROG;
1647 	spin_unlock_irq(&phba->hbalock);
1648 out:
1649 	mempool_free(mboxq, 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
lpfc_fab_name_match(uint8_t * fab_name,struct fcf_record * new_fcf_record)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
lpfc_sw_name_match(uint8_t * sw_name,struct fcf_record * new_fcf_record)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
lpfc_mac_addr_match(uint8_t * mac_addr,struct fcf_record * new_fcf_record)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
lpfc_vlan_id_match(uint16_t curr_vlan_id,uint16_t new_vlan_id)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
__lpfc_update_fcf_record_pri(struct lpfc_hba * phba,uint16_t fcf_index,struct fcf_record * new_fcf_record)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
lpfc_copy_fcf_record(struct lpfc_fcf_rec * fcf_rec,struct fcf_record * new_fcf_record)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
__lpfc_update_fcf_record(struct lpfc_hba * phba,struct lpfc_fcf_rec * fcf_rec,struct fcf_record * new_fcf_record,uint32_t addr_mode,uint16_t vlan_id,uint32_t flag)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
lpfc_register_fcf(struct lpfc_hba * phba)1869 lpfc_register_fcf(struct lpfc_hba *phba)
1870 {
1871 	LPFC_MBOXQ_t *fcf_mbxq;
1872 	int rc;
1873 
1874 	spin_lock_irq(&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(&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(&phba->hbalock);
1890 			lpfc_initial_flogi(phba->pport);
1891 			return;
1892 		}
1893 		spin_unlock_irq(&phba->hbalock);
1894 		return;
1895 	}
1896 	spin_unlock_irq(&phba->hbalock);
1897 
1898 	fcf_mbxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1899 	if (!fcf_mbxq) {
1900 		spin_lock_irq(&phba->hbalock);
1901 		phba->hba_flag &= ~(FCF_TS_INPROG | FCF_RR_INPROG);
1902 		spin_unlock_irq(&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(&phba->hbalock);
1912 		phba->hba_flag &= ~(FCF_TS_INPROG | FCF_RR_INPROG);
1913 		spin_unlock_irq(&phba->hbalock);
1914 		mempool_free(fcf_mbxq, 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
lpfc_match_fcf_conn_list(struct lpfc_hba * phba,struct fcf_record * new_fcf_record,uint32_t * boot_flag,uint32_t * addr_mode,uint16_t * vlan_id)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(&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(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(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
lpfc_check_pending_fcoe_event(struct lpfc_hba * phba,uint8_t unreg_fcf)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(&phba->hbalock);
2142 	phba->fcf.fcf_flag &= ~FCF_AVAILABLE;
2143 	spin_unlock_irq(&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(&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(&phba->hbalock);
2165 	}
2166 
2167 	/* Unregister the currently registered FCF if required */
2168 	if (unreg_fcf) {
2169 		spin_lock_irq(&phba->hbalock);
2170 		phba->fcf.fcf_flag &= ~FCF_REGISTERED;
2171 		spin_unlock_irq(&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
lpfc_sli4_new_fcf_random_select(struct lpfc_hba * phba,uint32_t fcf_cnt)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 *
lpfc_sli4_fcf_rec_mbox_parse(struct lpfc_hba * phba,LPFC_MBOXQ_t * mboxq,uint16_t * next_fcf_index)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
lpfc_sli4_log_fcf_record_info(struct lpfc_hba * phba,struct fcf_record * fcf_record,uint16_t vlan_id,uint16_t next_fcf_index)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
lpfc_sli4_fcf_record_match(struct lpfc_hba * phba,struct lpfc_fcf_rec * fcf_rec,struct fcf_record * new_fcf_record,uint16_t new_vlan_id)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(fcf_rec->vlan_id, new_vlan_id))
2361 			return false;
2362 	if (!lpfc_mac_addr_match(fcf_rec->mac_addr, new_fcf_record))
2363 		return false;
2364 	if (!lpfc_sw_name_match(fcf_rec->switch_name, new_fcf_record))
2365 		return false;
2366 	if (!lpfc_fab_name_match(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  */
lpfc_sli4_fcf_rr_next_proc(struct lpfc_vport * vport,uint16_t fcf_index)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(&phba->hbalock);
2391 		if (phba->hba_flag & HBA_DEVLOSS_TMO) {
2392 			spin_unlock_irq(&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(&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  **/
lpfc_sli4_fcf_pri_list_del(struct lpfc_hba * phba,uint16_t fcf_index)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(&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(&new_fcf_pri->list);
2477 		new_fcf_pri->fcf_rec.flag &= ~LPFC_FCF_ON_PRI_LIST;
2478 	}
2479 	spin_unlock_irq(&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
lpfc_sli4_set_fcf_flogi_fail(struct lpfc_hba * phba,uint16_t fcf_index)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(&phba->hbalock);
2498 	new_fcf_pri->fcf_rec.flag |= LPFC_FCF_FLOGI_FAILED;
2499 	spin_unlock_irq(&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  **/
lpfc_sli4_fcf_pri_list_add(struct lpfc_hba * phba,uint16_t fcf_index,struct fcf_record * new_fcf_record)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(&phba->hbalock);
2535 	if (new_fcf_pri->fcf_rec.flag & LPFC_FCF_ON_PRI_LIST)
2536 		list_del_init(&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(&phba->fcf.fcf_pri_list)) {
2540 		list_add(&new_fcf_pri->list, &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(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_fcf_pri->list, &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_fcf_pri->list,
2574 						&phba->fcf.fcf_pri_list);
2575 			else
2576 				list_add(&new_fcf_pri->list,
2577 					 &((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_fcf_pri->list, &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(&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
lpfc_mbx_cmpl_fcf_scan_read_fcf_rec(struct lpfc_hba * phba,LPFC_MBOXQ_t * mboxq)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);
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(&phba->hbalock);
2641 		phba->hba_flag &= ~FCF_TS_INPROG;
2642 		spin_unlock_irq(&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,
2649 				      &addr_mode, &vlan_id);
2650 
2651 	/* Log the FCF record information if turned on */
2652 	lpfc_sli4_log_fcf_record_info(phba, 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, &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(&phba->hbalock);
2703 				phba->fcf.fcf_flag |= FCF_REDISC_FOV;
2704 				spin_unlock_irq(&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(&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, &phba->fcf.current_rec,
2730 		    new_fcf_record, 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(&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(&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(&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(&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, 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 						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, 0);
2839 			}
2840 		}
2841 		spin_unlock_irq(&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, (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(&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(&phba->hbalock);
2884 				if (phba->hba_flag & HBA_DEVLOSS_TMO) {
2885 					phba->hba_flag &= ~FCF_TS_INPROG;
2886 					spin_unlock_irq(&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(&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(&phba->hbalock);
2930 			phba->fcf.fcf_flag &= ~FCF_REDISC_FOV;
2931 			spin_unlock_irq(&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(&phba->hbalock);
2957 				phba->fcf.fcf_flag |= FCF_REDISC_FOV;
2958 				spin_unlock_irq(&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
lpfc_mbx_cmpl_fcf_rr_read_fcf_rec(struct lpfc_hba * phba,LPFC_MBOXQ_t * mboxq)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(&phba->hbalock);
3005 		phba->fcf.fcf_flag &= ~FCF_DISCOVERY;
3006 		phba->hba_flag &= ~FCF_RR_INPROG;
3007 		spin_unlock_irq(&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);
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,
3026 				      &addr_mode, &vlan_id);
3027 
3028 	/* Log the FCF record information if turned on */
3029 	lpfc_sli4_log_fcf_record_info(phba, 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(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(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(&phba->hbalock);
3063 	__lpfc_update_fcf_record(phba, &phba->fcf.failover_rec,
3064 				 new_fcf_record, addr_mode, vlan_id,
3065 				 (boot_flag ? BOOT_ENABLE : 0));
3066 	spin_unlock_irq(&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
lpfc_mbx_cmpl_read_fcf_rec(struct lpfc_hba * phba,LPFC_MBOXQ_t * mboxq)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);
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,
3127 				      &addr_mode, &vlan_id);
3128 
3129 	/* Log the FCF record information if turned on */
3130 	lpfc_sli4_log_fcf_record_info(phba, 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
lpfc_init_vfi_cmpl(struct lpfc_hba * phba,LPFC_MBOXQ_t * mboxq)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(mboxq, phba->mbox_mem_pool);
3169 		lpfc_vport_set_state(vport, FC_VPORT_FAILED);
3170 		return;
3171 	}
3172 
3173 	lpfc_initial_flogi(vport);
3174 	mempool_free(mboxq, 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
lpfc_issue_init_vfi(struct lpfc_vport * vport)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(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(mboxq, 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
lpfc_init_vpi_cmpl(struct lpfc_hba * phba,LPFC_MBOXQ_t * mboxq)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(mboxq, phba->mbox_mem_pool);
3228 		lpfc_vport_set_state(vport, FC_VPORT_FAILED);
3229 		return;
3230 	}
3231 	spin_lock_irq(shost->host_lock);
3232 	vport->fc_flag &= ~FC_VPORT_NEEDS_INIT_VPI;
3233 	spin_unlock_irq(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(mboxq, 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, 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(mboxq, 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
lpfc_issue_init_vpi(struct lpfc_vport * vport)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(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, FC_VPORT_FAILED);
3279 			return;
3280 		}
3281 		vport->vpi = vpi;
3282 	}
3283 
3284 	mboxq = mempool_alloc(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(mboxq, 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
lpfc_start_fdiscs(struct lpfc_hba * phba)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(vports[i],
3323 						     FC_VPORT_FAILED);
3324 				continue;
3325 			}
3326 			if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
3327 				lpfc_vport_set_state(vports[i],
3328 						     FC_VPORT_LINKDOWN);
3329 				continue;
3330 			}
3331 			if (vports[i]->fc_flag & FC_VPORT_NEEDS_INIT_VPI) {
3332 				lpfc_issue_init_vpi(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(vports[i],
3339 						     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
lpfc_mbx_cmpl_reg_vfi(struct lpfc_hba * phba,LPFC_MBOXQ_t * mboxq)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, 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(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(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, mboxq, MBOX_THD_UNLOCKED);
3434 }
3435 
3436 static void
lpfc_mbx_cmpl_read_sparam(struct lpfc_hba * phba,LPFC_MBOXQ_t * pmb)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(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, pmb, 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, pmb, MBOX_THD_UNLOCKED);
3491 	lpfc_issue_clear_la(phba, vport);
3492 }
3493 
3494 static void
lpfc_mbx_process_link_up(struct lpfc_hba * phba,struct lpfc_mbx_read_top * la)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(&phba->hbalock, iflags);
3605 
3606 	if (fc_flags) {
3607 		spin_lock_irqsave(shost->host_lock, iflags);
3608 		vport->fc_flag |= fc_flags;
3609 		spin_unlock_irqrestore(shost->host_lock, iflags);
3610 	}
3611 
3612 	lpfc_linkup(phba);
3613 	sparam_mbox = NULL;
3614 
3615 	sparam_mbox = mempool_alloc(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(sparam_mbox, 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, sparam_mbox, MBOX_THD_UNLOCKED);
3629 		goto out;
3630 	}
3631 
3632 	if (!(phba->hba_flag & HBA_FCOE_MODE)) {
3633 		cfglink_mbox = mempool_alloc(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(cfglink_mbox, 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(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(fcf_record);
3674 				goto out;
3675 			}
3676 			kfree(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(&phba->hbalock, iflags);
3685 			return;
3686 		}
3687 		/* This is the initial FCF discovery scan */
3688 		phba->fcf.fcf_flag |= FCF_INIT_DISC;
3689 		spin_unlock_irqrestore(&phba->hbalock, 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(&phba->hbalock, 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(phba->os_host_name, sizeof(phba->os_host_name), "%s",
3707 		  init_utsname()->nodename);
3708 	return;
3709 out:
3710 	lpfc_vport_set_state(vport, 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
lpfc_enable_la(struct lpfc_hba * phba)3719 lpfc_enable_la(struct lpfc_hba *phba)
3720 {
3721 	uint32_t control;
3722 	struct lpfc_sli *psli = &phba->sli;
3723 	spin_lock_irq(&phba->hbalock);
3724 	psli->sli_flag |= LPFC_PROCESS_LA;
3725 	if (phba->sli_rev <= LPFC_SLI_REV3) {
3726 		control = readl(phba->HCregaddr);
3727 		control |= HC_LAINT_ENA;
3728 		writel(control, phba->HCregaddr);
3729 		readl(phba->HCregaddr); /* flush */
3730 	}
3731 	spin_unlock_irq(&phba->hbalock);
3732 }
3733 
3734 static void
lpfc_mbx_issue_link_down(struct lpfc_hba * phba)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
lpfc_mbx_cmpl_read_topology(struct lpfc_hba * phba,LPFC_MBOXQ_t * pmb)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(shost->host_lock, 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, pmb, 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
lpfc_mbx_cmpl_reg_login(struct lpfc_hba * phba,LPFC_MBOXQ_t * pmb)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(&ndlp->lock);
3904 		ndlp->nlp_flag &= ~NLP_IGNR_REG_CMPL;
3905 		spin_unlock_irq(&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, pmb, 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
lpfc_mbx_cmpl_unreg_vpi(struct lpfc_hba * phba,LPFC_MBOXQ_t * pmb)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 				LPFC_EVT_RESET_HBA);
3951 	}
3952 	spin_lock_irq(shost->host_lock);
3953 	vport->vpi_state &= ~LPFC_VPI_REGISTERED;
3954 	vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
3955 	spin_unlock_irq(shost->host_lock);
3956 	mempool_free(pmb, 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(shost);
3964 }
3965 
3966 int
lpfc_mbx_unreg_vpi(struct lpfc_vport * vport)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(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(mbox, phba->mbox_mem_pool);
3985 		return rc;
3986 	}
3987 	return 0;
3988 }
3989 
3990 static void
lpfc_mbx_cmpl_reg_vpi(struct lpfc_hba * phba,LPFC_MBOXQ_t * pmb)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, FC_VPORT_FAILED);
4005 		spin_lock_irq(shost->host_lock);
4006 		vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP);
4007 		spin_unlock_irq(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(shost->host_lock);
4021 	vport->vpi_state |= LPFC_VPI_REGISTERED;
4022 	vport->fc_flag &= ~FC_VPORT_NEEDS_REG_VPI;
4023 	spin_unlock_irq(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(shost->host_lock);
4031 		vport->fc_flag &= ~FC_NDISC_ACTIVE;
4032 		spin_unlock_irq(shost->host_lock);
4033 		lpfc_can_disctmo(vport);
4034 	}
4035 	vport->port_state = LPFC_VPORT_READY;
4036 
4037 out:
4038 	mempool_free(pmb, 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
lpfc_create_static_vport(struct lpfc_hba * phba)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(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(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(pmb, 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(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(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(vport_info->vport_list[i].wwpn);
4158 		vport_id.node_name = wwn_to_u64(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, 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(vport_info);
4180 	if (mbx_wait_rc != MBX_TIMEOUT)
4181 		lpfc_mbox_rsrc_cleanup(phba, pmb, 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
lpfc_mbx_cmpl_fabric_reg_login(struct lpfc_hba * phba,LPFC_MBOXQ_t * pmb)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, pmb, 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, 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(shost->host_lock);
4240 			vport->fc_flag &= ~FC_LOGO_RCVD_DID_CHNG ;
4241 			spin_unlock_irq(shost->host_lock);
4242 		}
4243 		lpfc_do_scr_ns_plogi(phba, vport);
4244 	}
4245 
4246 	lpfc_mbox_rsrc_cleanup(phba, pmb, 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
lpfc_issue_gidft(struct lpfc_vport * vport)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
lpfc_issue_gidpt(struct lpfc_vport * vport)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
lpfc_mbx_cmpl_ns_reg_login(struct lpfc_hba * phba,LPFC_MBOXQ_t * pmb)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, pmb, 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(&ndlp->lock);
4366 			ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
4367 			spin_unlock_irq(&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, 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, 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, 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, 0);
4433 		} else {
4434 			lpfc_issue_els_rdf(vport, 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, pmb, 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
lpfc_mbx_cmpl_fc_reg_login(struct lpfc_hba * phba,LPFC_MBOXQ_t * pmb)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, pmb, 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
lpfc_register_remote_port(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp)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(ndlp->nlp_nodename.u.wwn);
4513 	rport_ids.port_name = wwn_to_u64(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, 0, &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(&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, 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
lpfc_unregister_remote_port(struct lpfc_nodelist * ndlp)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
lpfc_nlp_counters(struct lpfc_vport * vport,int state,int count)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(shost->host_lock, iflags);
4637 }
4638 
4639 /* Register a node with backend if not already done */
4640 void
lpfc_nlp_reg_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp)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(&ndlp->lock, 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(&ndlp->lock, 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
lpfc_nlp_unreg_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp)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(&ndlp->lock, 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(&ndlp->lock, 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
lpfc_handle_adisc_state(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,int new_state)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
lpfc_nlp_state_cleanup(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,int old_state,int new_state)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(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(&ndlp->lock);
4836 		ndlp->nlp_flag |= NLP_TGT_NO_SCSIID;
4837 		spin_unlock_irq(&ndlp->lock);
4838 		lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
4839 	}
4840 }
4841 
4842 static char *
lpfc_nlp_state_name(char * buffer,size_t size,int state)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(buffer, states[state], size);
4859 	else
4860 		snprintf(buffer, size, "unknown (%d)", state);
4861 	return buffer;
4862 }
4863 
4864 void
lpfc_nlp_set_state(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,int state)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(&ndlp->nlp_listp)) {
4898 		spin_lock_irq(shost->host_lock);
4899 		list_add_tail(&ndlp->nlp_listp, &vport->fc_nodes);
4900 		spin_unlock_irq(shost->host_lock);
4901 	} else if (old_state)
4902 		lpfc_nlp_counters(vport, old_state, -1);
4903 
4904 	ndlp->nlp_state = state;
4905 	lpfc_nlp_counters(vport, state, 1);
4906 	lpfc_nlp_state_cleanup(vport, ndlp, old_state, state);
4907 }
4908 
4909 void
lpfc_enqueue_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp)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(&ndlp->nlp_listp)) {
4915 		spin_lock_irq(shost->host_lock);
4916 		list_add_tail(&ndlp->nlp_listp, &vport->fc_nodes);
4917 		spin_unlock_irq(shost->host_lock);
4918 	}
4919 }
4920 
4921 void
lpfc_dequeue_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp)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(&ndlp->nlp_listp))
4928 		lpfc_nlp_counters(vport, ndlp->nlp_state, -1);
4929 	spin_lock_irq(shost->host_lock);
4930 	list_del_init(&ndlp->nlp_listp);
4931 	spin_unlock_irq(shost->host_lock);
4932 	lpfc_nlp_state_cleanup(vport, ndlp, 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
lpfc_initialize_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,uint32_t did)4951 lpfc_initialize_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
4952 	uint32_t did)
4953 {
4954 	INIT_LIST_HEAD(&ndlp->els_retry_evt.evt_listp);
4955 	INIT_LIST_HEAD(&ndlp->dev_loss_evt.evt_listp);
4956 	timer_setup(&ndlp->nlp_delayfunc, lpfc_els_retry_delay, 0);
4957 	INIT_LIST_HEAD(&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(&ndlp->kref);
4965 	atomic_set(&ndlp->cmd_pending, 0);
4966 	ndlp->cmd_qdepth = vport->cfg_tgt_queue_depth;
4967 	ndlp->nlp_defer_did = NLP_EVT_NOTHING_PENDING;
4968 }
4969 
4970 void
lpfc_drop_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp)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(&ndlp->lock);
4991 	if (!(ndlp->nlp_flag & NLP_DROPPED)) {
4992 		ndlp->nlp_flag |= NLP_DROPPED;
4993 		spin_unlock_irq(&ndlp->lock);
4994 		lpfc_nlp_put(ndlp);
4995 		return;
4996 	}
4997 	spin_unlock_irq(&ndlp->lock);
4998 }
4999 
5000 /*
5001  * Start / ReStart rescue timer for Discovery / RSCN handling
5002  */
5003 void
lpfc_set_disctmo(struct lpfc_vport * vport)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(&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(&vport->fc_disctmo, jiffies + msecs_to_jiffies(1000 * tmo));
5028 	spin_lock_irq(shost->host_lock);
5029 	vport->fc_flag |= FC_DISC_TMO;
5030 	spin_unlock_irq(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
lpfc_can_disctmo(struct lpfc_vport * vport)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(&vport->fc_disctmo)) {
5059 		spin_lock_irqsave(shost->host_lock, iflags);
5060 		vport->fc_flag &= ~FC_DISC_TMO;
5061 		spin_unlock_irqrestore(shost->host_lock, iflags);
5062 		del_timer_sync(&vport->fc_disctmo);
5063 		spin_lock_irqsave(&vport->work_port_lock, iflags);
5064 		vport->work_port_events &= ~WORKER_DISC_TMO;
5065 		spin_unlock_irqrestore(&vport->work_port_lock, 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
lpfc_check_sli_ndlp(struct lpfc_hba * phba,struct lpfc_sli_ring * pring,struct lpfc_iocbq * iocb,struct lpfc_nodelist * ndlp)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, iocb);
5096 	ulp_context = get_job_ulpcontext(phba, iocb);
5097 	remote_id = get_job_els_rsp64_did(phba, 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
__lpfc_dequeue_nport_iocbs(struct lpfc_hba * phba,struct lpfc_nodelist * ndlp,struct lpfc_sli_ring * pring,struct list_head * dequeue_list)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(&iocb->list, dequeue_list);
5137 	}
5138 }
5139 
5140 static void
lpfc_sli3_dequeue_nport_iocbs(struct lpfc_hba * phba,struct lpfc_nodelist * ndlp,struct list_head * dequeue_list)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(&phba->hbalock);
5148 	for (i = 0; i < psli->num_rings; i++)
5149 		__lpfc_dequeue_nport_iocbs(phba, ndlp, &psli->sli3_ring[i],
5150 						dequeue_list);
5151 	spin_unlock_irq(&phba->hbalock);
5152 }
5153 
5154 static void
lpfc_sli4_dequeue_nport_iocbs(struct lpfc_hba * phba,struct lpfc_nodelist * ndlp,struct list_head * dequeue_list)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(&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(&pring->ring_lock);
5167 		__lpfc_dequeue_nport_iocbs(phba, ndlp, pring, dequeue_list);
5168 		spin_unlock(&pring->ring_lock);
5169 	}
5170 	spin_unlock_irq(&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
lpfc_no_rpi(struct lpfc_hba * phba,struct lpfc_nodelist * ndlp)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, &completions);
5191 		else
5192 			lpfc_sli4_dequeue_nport_iocbs(phba, ndlp, &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
lpfc_nlp_logo_unreg(struct lpfc_hba * phba,LPFC_MBOXQ_t * pmb)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(&ndlp->lock);
5238 			ndlp->nlp_flag &= ~NLP_RELEASE_RPI;
5239 			ndlp->nlp_rpi = LPFC_RPI_ALLOC_ERROR;
5240 			spin_unlock_irq(&ndlp->lock);
5241 		}
5242 		spin_lock_irq(&ndlp->lock);
5243 		ndlp->nlp_flag &= ~NLP_UNREG_INP;
5244 		spin_unlock_irq(&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(pmb, 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
lpfc_set_unreg_login_mbx_cmpl(struct lpfc_hba * phba,struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,LPFC_MBOXQ_t * mbox)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(&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(&ndlp->lock, 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
lpfc_unreg_rpi(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp)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(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(mbox, 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(mbox, 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
lpfc_unreg_hba_rpis(struct lpfc_hba * phba)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(vports[i]);
5438 		spin_lock_irq(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(shost->host_lock);
5443 				lpfc_unreg_rpi(vports[i], ndlp);
5444 				spin_lock_irq(shost->host_lock);
5445 			}
5446 		}
5447 		spin_unlock_irq(shost->host_lock);
5448 	}
5449 	lpfc_destroy_vport_work_array(phba, vports);
5450 }
5451 
5452 void
lpfc_unreg_all_rpis(struct lpfc_vport * vport)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(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(mbox, 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
lpfc_unreg_default_rpis(struct lpfc_vport * vport)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(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(mbox, 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
lpfc_cleanup_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp)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(&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(&mb->list);
5560 			lpfc_mbox_rsrc_cleanup(phba, mb, 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(&phba->hbalock);
5568 
5569 	lpfc_els_abort(phba, ndlp);
5570 
5571 	spin_lock_irq(&ndlp->lock);
5572 	ndlp->nlp_flag &= ~NLP_DELAY_TMO;
5573 	spin_unlock_irq(&ndlp->lock);
5574 
5575 	ndlp->nlp_last_elscmd = 0;
5576 	del_timer_sync(&ndlp->nlp_delayfunc);
5577 
5578 	list_del_init(&ndlp->els_retry_evt.evt_listp);
5579 	list_del_init(&ndlp->dev_loss_evt.evt_listp);
5580 	list_del_init(&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
lpfc_matchdid(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,uint32_t did)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 *
__lpfc_findnode_did(struct lpfc_vport * vport,uint32_t did)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,
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 *
lpfc_findnode_did(struct lpfc_vport * vport,uint32_t did)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(shost->host_lock, iflags);
5683 	return ndlp;
5684 }
5685 
5686 struct lpfc_nodelist *
lpfc_findnode_mapped(struct lpfc_vport * vport)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(shost->host_lock, iflags);
5704 			lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
5705 					 "2025 FIND node DID "
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(shost->host_lock, 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 *
lpfc_setup_disc_node(struct lpfc_vport * vport,uint32_t did)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(&ndlp->lock);
5745 		ndlp->nlp_flag |= NLP_NPR_2B_DISC;
5746 		spin_unlock_irq(&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(&ndlp->lock);
5792 			ndlp->nlp_flag |= NLP_NPR_2B_DISC;
5793 			spin_unlock_irq(&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(&ndlp->lock);
5828 		ndlp->nlp_flag |= NLP_NPR_2B_DISC;
5829 		spin_unlock_irq(&ndlp->lock);
5830 	}
5831 	return ndlp;
5832 }
5833 
5834 /* Build a list of nodes to discover based on the loopmap */
5835 void
lpfc_disc_list_loopmap(struct lpfc_vport * vport)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, 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, alpa);
5870 		}
5871 	}
5872 	return;
5873 }
5874 
5875 /* SLI3 only */
5876 void
lpfc_issue_clear_la(struct lpfc_hba * phba,struct lpfc_vport * vport)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(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(mbox, 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
lpfc_issue_reg_vpi(struct lpfc_hba * phba,struct lpfc_vport * vport)5913 lpfc_issue_reg_vpi(struct lpfc_hba *phba, struct lpfc_vport *vport)
5914 {
5915 	LPFC_MBOXQ_t *regvpimbox;
5916 
5917 	regvpimbox = mempool_alloc(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(regvpimbox, phba->mbox_mem_pool);
5925 		}
5926 	}
5927 }
5928 
5929 /* Start Link up / RSCN discovery on NPR nodes */
5930 void
lpfc_disc_start(struct lpfc_vport * vport)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(shost->host_lock);
5997 				vport->fc_flag &= ~FC_NDISC_ACTIVE;
5998 				spin_unlock_irq(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(shost->host_lock);
6017 				vport->fc_flag &= ~FC_RSCN_MODE;
6018 				spin_unlock_irq(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
lpfc_free_tx(struct lpfc_hba * phba,struct lpfc_nodelist * ndlp)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(&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, iocb);
6052 
6053 		if (ulp_command == CMD_ELS_REQUEST64_CR ||
6054 		    ulp_command == CMD_XMIT_ELS_RSP64_CX) {
6055 
6056 			list_move_tail(&iocb->list, &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, 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(&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
lpfc_disc_flush_list(struct lpfc_vport * vport)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
lpfc_notify_xport_npr(struct lpfc_vport * vport)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
lpfc_cleanup_discovery_resources(struct lpfc_vport * vport)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(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
lpfc_disc_timeout(struct timer_list * t)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(&vport->work_port_lock, flags);
6160 
6161 	if (!tmo_posted)
6162 		lpfc_worker_wake_up(phba);
6163 	return;
6164 }
6165 
6166 static void
lpfc_disc_timeout_handler(struct lpfc_vport * vport)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(shost->host_lock);
6180 	vport->fc_flag &= ~FC_DISC_TMO;
6181 	spin_unlock_irq(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(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(initlinkmbox, 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
lpfc_mbx_cmpl_fdmi_reg_login(struct lpfc_hba * phba,LPFC_MBOXQ_t * pmb)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, pmb, MBOX_THD_UNLOCKED);
6446 	return;
6447 }
6448 
6449 static int
lpfc_filter_by_rpi(struct lpfc_nodelist * ndlp,void * param)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
lpfc_filter_by_wwpn(struct lpfc_nodelist * ndlp,void * param)6458 lpfc_filter_by_wwpn(struct lpfc_nodelist *ndlp, void *param)
6459 {
6460 	return memcmp(&ndlp->nlp_portname, param,
6461 		      sizeof(ndlp->nlp_portname)) == 0;
6462 }
6463 
6464 static struct lpfc_nodelist *
__lpfc_find_node(struct lpfc_vport * vport,node_filter filter,void * param)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,
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 *
__lpfc_findnode_rpi(struct lpfc_vport * vport,uint16_t rpi)6492 __lpfc_findnode_rpi(struct lpfc_vport *vport, uint16_t rpi)
6493 {
6494 	return __lpfc_find_node(vport, lpfc_filter_by_rpi, &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 *
lpfc_findnode_wwpn(struct lpfc_vport * vport,struct lpfc_name * wwpn)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(shost->host_lock);
6508 	ndlp = __lpfc_find_node(vport, lpfc_filter_by_wwpn, wwpn);
6509 	spin_unlock_irq(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 *
lpfc_findnode_rpi(struct lpfc_vport * vport,uint16_t rpi)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(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 *
lpfc_find_vport_by_vpid(struct lpfc_hba * phba,uint16_t vpi)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(&phba->port_list_lock, flags);
6574 			return vport;
6575 		}
6576 	}
6577 	spin_unlock_irqrestore(&phba->port_list_lock, flags);
6578 	return NULL;
6579 }
6580 
6581 struct lpfc_nodelist *
lpfc_nlp_init(struct lpfc_vport * vport,uint32_t did)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(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(&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(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
lpfc_nlp_release(struct kref * kref)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(ndlp->active_rrqs_xri_bitmap,
6680 				ndlp->phba->active_rrq_pool);
6681 	mempool_free(ndlp, 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 *
lpfc_nlp_get(struct lpfc_nodelist * ndlp)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(&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(&ndlp->kref)) {
6705 			spin_unlock_irqrestore(&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(&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
lpfc_nlp_put(struct lpfc_nodelist * ndlp)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(&ndlp->kref));
6730 	} else {
6731 		WARN_ONCE(!ndlp, "**** %s, put ref on NULL ndlp!", __func__);
6732 	}
6733 
6734 	return ndlp ? kref_put(&ndlp->kref, 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
lpfc_fcf_inuse(struct lpfc_hba * phba)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(vports[i]);
6763 		spin_lock_irq(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(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(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(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
lpfc_unregister_vfi_cmpl(struct lpfc_hba * phba,LPFC_MBOXQ_t * mboxq)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(shost->host_lock);
6818 	phba->pport->fc_flag &= ~FC_VFI_REGISTERED;
6819 	spin_unlock_irq(shost->host_lock);
6820 	mempool_free(mboxq, 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
lpfc_unregister_fcfi_cmpl(struct lpfc_hba * phba,LPFC_MBOXQ_t * mboxq)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(mboxq, 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
lpfc_unregister_fcf_prep(struct lpfc_hba * phba)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(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(vports[i]);
6881 			shost = lpfc_shost_from_vport(vports[i]);
6882 			spin_lock_irq(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(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(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(phba->pport);
6896 		shost = lpfc_shost_from_vport(phba->pport);
6897 		spin_lock_irq(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(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
lpfc_sli4_unregister_fcf(struct lpfc_hba * phba)6922 lpfc_sli4_unregister_fcf(struct lpfc_hba *phba)
6923 {
6924 	LPFC_MBOXQ_t *mbox;
6925 	int rc;
6926 
6927 	mbox = mempool_alloc(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
lpfc_unregister_fcf_rescan(struct lpfc_hba * phba)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(&phba->hbalock);
6976 	phba->fcf.fcf_flag = 0;
6977 	spin_unlock_irq(&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(&phba->hbalock);
6990 	phba->fcf.fcf_flag |= FCF_INIT_DISC;
6991 	spin_unlock_irq(&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(&phba->hbalock);
7000 		phba->fcf.fcf_flag &= ~FCF_INIT_DISC;
7001 		spin_unlock_irq(&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
lpfc_unregister_fcf(struct lpfc_hba * phba)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(&phba->hbalock);
7036 	phba->fcf.fcf_flag &= ~FCF_REGISTERED;
7037 	spin_unlock_irq(&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
lpfc_unregister_unused_fcf(struct lpfc_hba * phba)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(&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(&phba->hbalock);
7063 		return;
7064 	}
7065 	spin_unlock_irq(&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
lpfc_read_fcf_conn_tbl(struct lpfc_hba * phba,uint8_t * buff)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(&conn_entry->list);
7095 		kfree(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(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(&conn_entry->list,
7120 			&phba->fcf_conn_rec_list);
7121 	}
7122 
7123 	if (!list_empty(&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
lpfc_read_fcoe_param(struct lpfc_hba * phba,uint8_t * buff)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 *
lpfc_get_rec_conf23(uint8_t * buff,uint32_t size,uint8_t rec_type)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
lpfc_parse_fcoe_conf(struct lpfc_hba * phba,uint8_t * buff,uint32_t size)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(buff, LPFC_REGION23_SIGNATURE, 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[offset],
7274 			size - offset, FCOE_PARAM_TYPE);
7275 	if (rec_ptr)
7276 		lpfc_read_fcoe_param(phba, rec_ptr);
7277 
7278 	/* Read FCF connection table */
7279 	rec_ptr = lpfc_get_rec_conf23(&buff[offset],
7280 		size - offset, FCOE_CONN_TBL_TYPE);
7281 	if (rec_ptr)
7282 		lpfc_read_fcf_conn_tbl(phba, 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
lpfc_error_lost_link(struct lpfc_vport * vport,u32 ulp_status,u32 ulp_word4)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