1 /*******************************************************************
2 * This file is part of the Emulex Linux Device Driver for *
3 * Fibre Channel Host Bus Adapters. *
4 * Copyright (C) 2017-2020 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
76 void
lpfc_terminate_rport_io(struct fc_rport * rport)77 lpfc_terminate_rport_io(struct fc_rport *rport)
78 {
79 struct lpfc_rport_data *rdata;
80 struct lpfc_nodelist * ndlp;
81 struct lpfc_hba *phba;
82
83 rdata = rport->dd_data;
84 ndlp = rdata->pnode;
85
86 if (!ndlp || !NLP_CHK_NODE_ACT(ndlp)) {
87 if (rport->roles & FC_RPORT_ROLE_FCP_TARGET)
88 printk(KERN_ERR "Cannot find remote node"
89 " to terminate I/O Data x%x\n",
90 rport->port_id);
91 return;
92 }
93
94 phba = ndlp->phba;
95
96 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_RPORT,
97 "rport terminate: sid:x%x did:x%x flg:x%x",
98 ndlp->nlp_sid, ndlp->nlp_DID, ndlp->nlp_flag);
99
100 if (ndlp->nlp_sid != NLP_NO_SID) {
101 lpfc_sli_abort_iocb(ndlp->vport,
102 &phba->sli.sli3_ring[LPFC_FCP_RING],
103 ndlp->nlp_sid, 0, LPFC_CTX_TGT);
104 }
105 }
106
107 /*
108 * This function will be called when dev_loss_tmo fire.
109 */
110 void
lpfc_dev_loss_tmo_callbk(struct fc_rport * rport)111 lpfc_dev_loss_tmo_callbk(struct fc_rport *rport)
112 {
113 struct lpfc_rport_data *rdata;
114 struct lpfc_nodelist * ndlp;
115 struct lpfc_vport *vport;
116 struct Scsi_Host *shost;
117 struct lpfc_hba *phba;
118 struct lpfc_work_evt *evtp;
119 int put_node;
120 int put_rport;
121 unsigned long iflags;
122
123 rdata = rport->dd_data;
124 ndlp = rdata->pnode;
125 if (!ndlp || !NLP_CHK_NODE_ACT(ndlp))
126 return;
127
128 vport = ndlp->vport;
129 phba = vport->phba;
130
131 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
132 "rport devlosscb: sid:x%x did:x%x flg:x%x",
133 ndlp->nlp_sid, ndlp->nlp_DID, ndlp->nlp_flag);
134
135 lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_NODE,
136 "3181 dev_loss_callbk x%06x, rport x%px flg x%x\n",
137 ndlp->nlp_DID, ndlp->rport, ndlp->nlp_flag);
138
139 /* Don't defer this if we are in the process of deleting the vport
140 * or unloading the driver. The unload will cleanup the node
141 * appropriately we just need to cleanup the ndlp rport info here.
142 */
143 if (vport->load_flag & FC_UNLOADING) {
144 put_node = rdata->pnode != NULL;
145 put_rport = ndlp->rport != NULL;
146 rdata->pnode = NULL;
147 ndlp->rport = NULL;
148 if (put_node)
149 lpfc_nlp_put(ndlp);
150 if (put_rport)
151 put_device(&rport->dev);
152 return;
153 }
154
155 if (ndlp->nlp_state == NLP_STE_MAPPED_NODE)
156 return;
157
158 if (rport->port_name != wwn_to_u64(ndlp->nlp_portname.u.wwn))
159 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
160 "6789 rport name %llx != node port name %llx",
161 rport->port_name,
162 wwn_to_u64(ndlp->nlp_portname.u.wwn));
163
164 evtp = &ndlp->dev_loss_evt;
165
166 if (!list_empty(&evtp->evt_listp)) {
167 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
168 "6790 rport name %llx dev_loss_evt pending",
169 rport->port_name);
170 return;
171 }
172
173 shost = lpfc_shost_from_vport(vport);
174 spin_lock_irqsave(shost->host_lock, iflags);
175 ndlp->nlp_flag |= NLP_IN_DEV_LOSS;
176 spin_unlock_irqrestore(shost->host_lock, iflags);
177
178 /* We need to hold the node by incrementing the reference
179 * count until this queued work is done
180 */
181 evtp->evt_arg1 = lpfc_nlp_get(ndlp);
182
183 spin_lock_irqsave(&phba->hbalock, iflags);
184 if (evtp->evt_arg1) {
185 evtp->evt = LPFC_EVT_DEV_LOSS;
186 list_add_tail(&evtp->evt_listp, &phba->work_list);
187 lpfc_worker_wake_up(phba);
188 }
189 spin_unlock_irqrestore(&phba->hbalock, iflags);
190
191 return;
192 }
193
194 /**
195 * lpfc_dev_loss_tmo_handler - Remote node devloss timeout handler
196 * @ndlp: Pointer to remote node object.
197 *
198 * This function is called from the worker thread when devloss timeout timer
199 * expires. For SLI4 host, this routine shall return 1 when at lease one
200 * remote node, including this @ndlp, is still in use of FCF; otherwise, this
201 * routine shall return 0 when there is no remote node is still in use of FCF
202 * when devloss timeout happened to this @ndlp.
203 **/
204 static int
lpfc_dev_loss_tmo_handler(struct lpfc_nodelist * ndlp)205 lpfc_dev_loss_tmo_handler(struct lpfc_nodelist *ndlp)
206 {
207 struct lpfc_rport_data *rdata;
208 struct fc_rport *rport;
209 struct lpfc_vport *vport;
210 struct lpfc_hba *phba;
211 struct Scsi_Host *shost;
212 uint8_t *name;
213 int put_node;
214 int warn_on = 0;
215 int fcf_inuse = 0;
216 unsigned long iflags;
217
218 rport = ndlp->rport;
219 vport = ndlp->vport;
220 shost = lpfc_shost_from_vport(vport);
221
222 spin_lock_irqsave(shost->host_lock, iflags);
223 ndlp->nlp_flag &= ~NLP_IN_DEV_LOSS;
224 spin_unlock_irqrestore(shost->host_lock, iflags);
225
226 if (!rport)
227 return fcf_inuse;
228
229 name = (uint8_t *) &ndlp->nlp_portname;
230 phba = vport->phba;
231
232 if (phba->sli_rev == LPFC_SLI_REV4)
233 fcf_inuse = lpfc_fcf_inuse(phba);
234
235 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
236 "rport devlosstmo:did:x%x type:x%x id:x%x",
237 ndlp->nlp_DID, ndlp->nlp_type, rport->scsi_target_id);
238
239 lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_NODE,
240 "3182 dev_loss_tmo_handler x%06x, rport x%px flg x%x\n",
241 ndlp->nlp_DID, ndlp->rport, ndlp->nlp_flag);
242
243 /*
244 * lpfc_nlp_remove if reached with dangling rport drops the
245 * reference. To make sure that does not happen clear rport
246 * pointer in ndlp before lpfc_nlp_put.
247 */
248 rdata = rport->dd_data;
249
250 /* Don't defer this if we are in the process of deleting the vport
251 * or unloading the driver. The unload will cleanup the node
252 * appropriately we just need to cleanup the ndlp rport info here.
253 */
254 if (vport->load_flag & FC_UNLOADING) {
255 if (ndlp->nlp_sid != NLP_NO_SID) {
256 /* flush the target */
257 lpfc_sli_abort_iocb(vport,
258 &phba->sli.sli3_ring[LPFC_FCP_RING],
259 ndlp->nlp_sid, 0, LPFC_CTX_TGT);
260 }
261 put_node = rdata->pnode != NULL;
262 rdata->pnode = NULL;
263 ndlp->rport = NULL;
264 if (put_node)
265 lpfc_nlp_put(ndlp);
266 put_device(&rport->dev);
267
268 return fcf_inuse;
269 }
270
271 if (ndlp->nlp_state == NLP_STE_MAPPED_NODE) {
272 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
273 "0284 Devloss timeout Ignored on "
274 "WWPN %x:%x:%x:%x:%x:%x:%x:%x "
275 "NPort x%x\n",
276 *name, *(name+1), *(name+2), *(name+3),
277 *(name+4), *(name+5), *(name+6), *(name+7),
278 ndlp->nlp_DID);
279 return fcf_inuse;
280 }
281
282 put_node = rdata->pnode != NULL;
283 rdata->pnode = NULL;
284 ndlp->rport = NULL;
285 if (put_node)
286 lpfc_nlp_put(ndlp);
287 put_device(&rport->dev);
288
289 if (ndlp->nlp_type & NLP_FABRIC)
290 return fcf_inuse;
291
292 if (ndlp->nlp_sid != NLP_NO_SID) {
293 warn_on = 1;
294 lpfc_sli_abort_iocb(vport, &phba->sli.sli3_ring[LPFC_FCP_RING],
295 ndlp->nlp_sid, 0, LPFC_CTX_TGT);
296 }
297
298 if (warn_on) {
299 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
300 "0203 Devloss timeout on "
301 "WWPN %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x "
302 "NPort x%06x Data: x%x x%x x%x\n",
303 *name, *(name+1), *(name+2), *(name+3),
304 *(name+4), *(name+5), *(name+6), *(name+7),
305 ndlp->nlp_DID, ndlp->nlp_flag,
306 ndlp->nlp_state, ndlp->nlp_rpi);
307 } else {
308 lpfc_printf_vlog(vport, KERN_INFO, LOG_TRACE_EVENT,
309 "0204 Devloss timeout on "
310 "WWPN %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x "
311 "NPort x%06x Data: x%x x%x x%x\n",
312 *name, *(name+1), *(name+2), *(name+3),
313 *(name+4), *(name+5), *(name+6), *(name+7),
314 ndlp->nlp_DID, ndlp->nlp_flag,
315 ndlp->nlp_state, ndlp->nlp_rpi);
316 }
317
318 if (!(ndlp->nlp_flag & NLP_DELAY_TMO) &&
319 !(ndlp->nlp_flag & NLP_NPR_2B_DISC) &&
320 (ndlp->nlp_state != NLP_STE_UNMAPPED_NODE) &&
321 (ndlp->nlp_state != NLP_STE_REG_LOGIN_ISSUE) &&
322 (ndlp->nlp_state != NLP_STE_PRLI_ISSUE))
323 lpfc_disc_state_machine(vport, ndlp, NULL, NLP_EVT_DEVICE_RM);
324
325 return fcf_inuse;
326 }
327
328 /**
329 * lpfc_sli4_post_dev_loss_tmo_handler - SLI4 post devloss timeout handler
330 * @phba: Pointer to hba context object.
331 * @fcf_inuse: SLI4 FCF in-use state reported from devloss timeout handler.
332 * @nlp_did: remote node identifer with devloss timeout.
333 *
334 * This function is called from the worker thread after invoking devloss
335 * timeout handler and releasing the reference count for the ndlp with
336 * which the devloss timeout was handled for SLI4 host. For the devloss
337 * timeout of the last remote node which had been in use of FCF, when this
338 * routine is invoked, it shall be guaranteed that none of the remote are
339 * in-use of FCF. When devloss timeout to the last remote using the FCF,
340 * if the FIP engine is neither in FCF table scan process nor roundrobin
341 * failover process, the in-use FCF shall be unregistered. If the FIP
342 * engine is in FCF discovery process, the devloss timeout state shall
343 * be set for either the FCF table scan process or roundrobin failover
344 * process to unregister the in-use FCF.
345 **/
346 static void
lpfc_sli4_post_dev_loss_tmo_handler(struct lpfc_hba * phba,int fcf_inuse,uint32_t nlp_did)347 lpfc_sli4_post_dev_loss_tmo_handler(struct lpfc_hba *phba, int fcf_inuse,
348 uint32_t nlp_did)
349 {
350 /* If devloss timeout happened to a remote node when FCF had no
351 * longer been in-use, do nothing.
352 */
353 if (!fcf_inuse)
354 return;
355
356 if ((phba->hba_flag & HBA_FIP_SUPPORT) && !lpfc_fcf_inuse(phba)) {
357 spin_lock_irq(&phba->hbalock);
358 if (phba->fcf.fcf_flag & FCF_DISCOVERY) {
359 if (phba->hba_flag & HBA_DEVLOSS_TMO) {
360 spin_unlock_irq(&phba->hbalock);
361 return;
362 }
363 phba->hba_flag |= HBA_DEVLOSS_TMO;
364 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
365 "2847 Last remote node (x%x) using "
366 "FCF devloss tmo\n", nlp_did);
367 }
368 if (phba->fcf.fcf_flag & FCF_REDISC_PROG) {
369 spin_unlock_irq(&phba->hbalock);
370 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
371 "2868 Devloss tmo to FCF rediscovery "
372 "in progress\n");
373 return;
374 }
375 if (!(phba->hba_flag & (FCF_TS_INPROG | FCF_RR_INPROG))) {
376 spin_unlock_irq(&phba->hbalock);
377 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
378 "2869 Devloss tmo to idle FIP engine, "
379 "unreg in-use FCF and rescan.\n");
380 /* Unregister in-use FCF and rescan */
381 lpfc_unregister_fcf_rescan(phba);
382 return;
383 }
384 spin_unlock_irq(&phba->hbalock);
385 if (phba->hba_flag & FCF_TS_INPROG)
386 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
387 "2870 FCF table scan in progress\n");
388 if (phba->hba_flag & FCF_RR_INPROG)
389 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
390 "2871 FLOGI roundrobin FCF failover "
391 "in progress\n");
392 }
393 lpfc_unregister_unused_fcf(phba);
394 }
395
396 /**
397 * lpfc_alloc_fast_evt - Allocates data structure for posting event
398 * @phba: Pointer to hba context object.
399 *
400 * This function is called from the functions which need to post
401 * events from interrupt context. This function allocates data
402 * structure required for posting event. It also keeps track of
403 * number of events pending and prevent event storm when there are
404 * too many events.
405 **/
406 struct lpfc_fast_path_event *
lpfc_alloc_fast_evt(struct lpfc_hba * phba)407 lpfc_alloc_fast_evt(struct lpfc_hba *phba) {
408 struct lpfc_fast_path_event *ret;
409
410 /* If there are lot of fast event do not exhaust memory due to this */
411 if (atomic_read(&phba->fast_event_count) > LPFC_MAX_EVT_COUNT)
412 return NULL;
413
414 ret = kzalloc(sizeof(struct lpfc_fast_path_event),
415 GFP_ATOMIC);
416 if (ret) {
417 atomic_inc(&phba->fast_event_count);
418 INIT_LIST_HEAD(&ret->work_evt.evt_listp);
419 ret->work_evt.evt = LPFC_EVT_FASTPATH_MGMT_EVT;
420 }
421 return ret;
422 }
423
424 /**
425 * lpfc_free_fast_evt - Frees event data structure
426 * @phba: Pointer to hba context object.
427 * @evt: Event object which need to be freed.
428 *
429 * This function frees the data structure required for posting
430 * events.
431 **/
432 void
lpfc_free_fast_evt(struct lpfc_hba * phba,struct lpfc_fast_path_event * evt)433 lpfc_free_fast_evt(struct lpfc_hba *phba,
434 struct lpfc_fast_path_event *evt) {
435
436 atomic_dec(&phba->fast_event_count);
437 kfree(evt);
438 }
439
440 /**
441 * lpfc_send_fastpath_evt - Posts events generated from fast path
442 * @phba: Pointer to hba context object.
443 * @evtp: Event data structure.
444 *
445 * This function is called from worker thread, when the interrupt
446 * context need to post an event. This function posts the event
447 * to fc transport netlink interface.
448 **/
449 static void
lpfc_send_fastpath_evt(struct lpfc_hba * phba,struct lpfc_work_evt * evtp)450 lpfc_send_fastpath_evt(struct lpfc_hba *phba,
451 struct lpfc_work_evt *evtp)
452 {
453 unsigned long evt_category, evt_sub_category;
454 struct lpfc_fast_path_event *fast_evt_data;
455 char *evt_data;
456 uint32_t evt_data_size;
457 struct Scsi_Host *shost;
458
459 fast_evt_data = container_of(evtp, struct lpfc_fast_path_event,
460 work_evt);
461
462 evt_category = (unsigned long) fast_evt_data->un.fabric_evt.event_type;
463 evt_sub_category = (unsigned long) fast_evt_data->un.
464 fabric_evt.subcategory;
465 shost = lpfc_shost_from_vport(fast_evt_data->vport);
466 if (evt_category == FC_REG_FABRIC_EVENT) {
467 if (evt_sub_category == LPFC_EVENT_FCPRDCHKERR) {
468 evt_data = (char *) &fast_evt_data->un.read_check_error;
469 evt_data_size = sizeof(fast_evt_data->un.
470 read_check_error);
471 } else if ((evt_sub_category == LPFC_EVENT_FABRIC_BUSY) ||
472 (evt_sub_category == LPFC_EVENT_PORT_BUSY)) {
473 evt_data = (char *) &fast_evt_data->un.fabric_evt;
474 evt_data_size = sizeof(fast_evt_data->un.fabric_evt);
475 } else {
476 lpfc_free_fast_evt(phba, fast_evt_data);
477 return;
478 }
479 } else if (evt_category == FC_REG_SCSI_EVENT) {
480 switch (evt_sub_category) {
481 case LPFC_EVENT_QFULL:
482 case LPFC_EVENT_DEVBSY:
483 evt_data = (char *) &fast_evt_data->un.scsi_evt;
484 evt_data_size = sizeof(fast_evt_data->un.scsi_evt);
485 break;
486 case LPFC_EVENT_CHECK_COND:
487 evt_data = (char *) &fast_evt_data->un.check_cond_evt;
488 evt_data_size = sizeof(fast_evt_data->un.
489 check_cond_evt);
490 break;
491 case LPFC_EVENT_VARQUEDEPTH:
492 evt_data = (char *) &fast_evt_data->un.queue_depth_evt;
493 evt_data_size = sizeof(fast_evt_data->un.
494 queue_depth_evt);
495 break;
496 default:
497 lpfc_free_fast_evt(phba, fast_evt_data);
498 return;
499 }
500 } else {
501 lpfc_free_fast_evt(phba, fast_evt_data);
502 return;
503 }
504
505 if (phba->cfg_enable_fc4_type != LPFC_ENABLE_NVME)
506 fc_host_post_vendor_event(shost,
507 fc_get_event_number(),
508 evt_data_size,
509 evt_data,
510 LPFC_NL_VENDOR_ID);
511
512 lpfc_free_fast_evt(phba, fast_evt_data);
513 return;
514 }
515
516 static void
lpfc_work_list_done(struct lpfc_hba * phba)517 lpfc_work_list_done(struct lpfc_hba *phba)
518 {
519 struct lpfc_work_evt *evtp = NULL;
520 struct lpfc_nodelist *ndlp;
521 int free_evt;
522 int fcf_inuse;
523 uint32_t nlp_did;
524
525 spin_lock_irq(&phba->hbalock);
526 while (!list_empty(&phba->work_list)) {
527 list_remove_head((&phba->work_list), evtp, typeof(*evtp),
528 evt_listp);
529 spin_unlock_irq(&phba->hbalock);
530 free_evt = 1;
531 switch (evtp->evt) {
532 case LPFC_EVT_ELS_RETRY:
533 ndlp = (struct lpfc_nodelist *) (evtp->evt_arg1);
534 lpfc_els_retry_delay_handler(ndlp);
535 free_evt = 0; /* evt is part of ndlp */
536 /* decrement the node reference count held
537 * for this queued work
538 */
539 lpfc_nlp_put(ndlp);
540 break;
541 case LPFC_EVT_DEV_LOSS:
542 ndlp = (struct lpfc_nodelist *)(evtp->evt_arg1);
543 fcf_inuse = lpfc_dev_loss_tmo_handler(ndlp);
544 free_evt = 0;
545 /* decrement the node reference count held for
546 * this queued work
547 */
548 nlp_did = ndlp->nlp_DID;
549 lpfc_nlp_put(ndlp);
550 if (phba->sli_rev == LPFC_SLI_REV4)
551 lpfc_sli4_post_dev_loss_tmo_handler(phba,
552 fcf_inuse,
553 nlp_did);
554 break;
555 case LPFC_EVT_ONLINE:
556 if (phba->link_state < LPFC_LINK_DOWN)
557 *(int *) (evtp->evt_arg1) = lpfc_online(phba);
558 else
559 *(int *) (evtp->evt_arg1) = 0;
560 complete((struct completion *)(evtp->evt_arg2));
561 break;
562 case LPFC_EVT_OFFLINE_PREP:
563 if (phba->link_state >= LPFC_LINK_DOWN)
564 lpfc_offline_prep(phba, LPFC_MBX_WAIT);
565 *(int *)(evtp->evt_arg1) = 0;
566 complete((struct completion *)(evtp->evt_arg2));
567 break;
568 case LPFC_EVT_OFFLINE:
569 lpfc_offline(phba);
570 lpfc_sli_brdrestart(phba);
571 *(int *)(evtp->evt_arg1) =
572 lpfc_sli_brdready(phba, HS_FFRDY | HS_MBRDY);
573 lpfc_unblock_mgmt_io(phba);
574 complete((struct completion *)(evtp->evt_arg2));
575 break;
576 case LPFC_EVT_WARM_START:
577 lpfc_offline(phba);
578 lpfc_reset_barrier(phba);
579 lpfc_sli_brdreset(phba);
580 lpfc_hba_down_post(phba);
581 *(int *)(evtp->evt_arg1) =
582 lpfc_sli_brdready(phba, HS_MBRDY);
583 lpfc_unblock_mgmt_io(phba);
584 complete((struct completion *)(evtp->evt_arg2));
585 break;
586 case LPFC_EVT_KILL:
587 lpfc_offline(phba);
588 *(int *)(evtp->evt_arg1)
589 = (phba->pport->stopped)
590 ? 0 : lpfc_sli_brdkill(phba);
591 lpfc_unblock_mgmt_io(phba);
592 complete((struct completion *)(evtp->evt_arg2));
593 break;
594 case LPFC_EVT_FASTPATH_MGMT_EVT:
595 lpfc_send_fastpath_evt(phba, evtp);
596 free_evt = 0;
597 break;
598 case LPFC_EVT_RESET_HBA:
599 if (!(phba->pport->load_flag & FC_UNLOADING))
600 lpfc_reset_hba(phba);
601 break;
602 }
603 if (free_evt)
604 kfree(evtp);
605 spin_lock_irq(&phba->hbalock);
606 }
607 spin_unlock_irq(&phba->hbalock);
608
609 }
610
611 static void
lpfc_work_done(struct lpfc_hba * phba)612 lpfc_work_done(struct lpfc_hba *phba)
613 {
614 struct lpfc_sli_ring *pring;
615 uint32_t ha_copy, status, control, work_port_events;
616 struct lpfc_vport **vports;
617 struct lpfc_vport *vport;
618 int i;
619
620 spin_lock_irq(&phba->hbalock);
621 ha_copy = phba->work_ha;
622 phba->work_ha = 0;
623 spin_unlock_irq(&phba->hbalock);
624
625 /* First, try to post the next mailbox command to SLI4 device */
626 if (phba->pci_dev_grp == LPFC_PCI_DEV_OC)
627 lpfc_sli4_post_async_mbox(phba);
628
629 if (ha_copy & HA_ERATT)
630 /* Handle the error attention event */
631 lpfc_handle_eratt(phba);
632
633 if (ha_copy & HA_MBATT)
634 lpfc_sli_handle_mb_event(phba);
635
636 if (ha_copy & HA_LATT)
637 lpfc_handle_latt(phba);
638
639 /* Process SLI4 events */
640 if (phba->pci_dev_grp == LPFC_PCI_DEV_OC) {
641 if (phba->hba_flag & HBA_RRQ_ACTIVE)
642 lpfc_handle_rrq_active(phba);
643 if (phba->hba_flag & ELS_XRI_ABORT_EVENT)
644 lpfc_sli4_els_xri_abort_event_proc(phba);
645 if (phba->hba_flag & ASYNC_EVENT)
646 lpfc_sli4_async_event_proc(phba);
647 if (phba->hba_flag & HBA_POST_RECEIVE_BUFFER) {
648 spin_lock_irq(&phba->hbalock);
649 phba->hba_flag &= ~HBA_POST_RECEIVE_BUFFER;
650 spin_unlock_irq(&phba->hbalock);
651 lpfc_sli_hbqbuf_add_hbqs(phba, LPFC_ELS_HBQ);
652 }
653 if (phba->fcf.fcf_flag & FCF_REDISC_EVT)
654 lpfc_sli4_fcf_redisc_event_proc(phba);
655 }
656
657 vports = lpfc_create_vport_work_array(phba);
658 if (vports != NULL)
659 for (i = 0; i <= phba->max_vports; i++) {
660 /*
661 * We could have no vports in array if unloading, so if
662 * this happens then just use the pport
663 */
664 if (vports[i] == NULL && i == 0)
665 vport = phba->pport;
666 else
667 vport = vports[i];
668 if (vport == NULL)
669 break;
670 spin_lock_irq(&vport->work_port_lock);
671 work_port_events = vport->work_port_events;
672 vport->work_port_events &= ~work_port_events;
673 spin_unlock_irq(&vport->work_port_lock);
674 if (work_port_events & WORKER_DISC_TMO)
675 lpfc_disc_timeout_handler(vport);
676 if (work_port_events & WORKER_ELS_TMO)
677 lpfc_els_timeout_handler(vport);
678 if (work_port_events & WORKER_HB_TMO)
679 lpfc_hb_timeout_handler(phba);
680 if (work_port_events & WORKER_MBOX_TMO)
681 lpfc_mbox_timeout_handler(phba);
682 if (work_port_events & WORKER_FABRIC_BLOCK_TMO)
683 lpfc_unblock_fabric_iocbs(phba);
684 if (work_port_events & WORKER_RAMP_DOWN_QUEUE)
685 lpfc_ramp_down_queue_handler(phba);
686 if (work_port_events & WORKER_DELAYED_DISC_TMO)
687 lpfc_delayed_disc_timeout_handler(vport);
688 }
689 lpfc_destroy_vport_work_array(phba, vports);
690
691 pring = lpfc_phba_elsring(phba);
692 status = (ha_copy & (HA_RXMASK << (4*LPFC_ELS_RING)));
693 status >>= (4*LPFC_ELS_RING);
694 if (pring && (status & HA_RXMASK ||
695 pring->flag & LPFC_DEFERRED_RING_EVENT ||
696 phba->hba_flag & HBA_SP_QUEUE_EVT)) {
697 if (pring->flag & LPFC_STOP_IOCB_EVENT) {
698 pring->flag |= LPFC_DEFERRED_RING_EVENT;
699 /* Preserve legacy behavior. */
700 if (!(phba->hba_flag & HBA_SP_QUEUE_EVT))
701 set_bit(LPFC_DATA_READY, &phba->data_flags);
702 } else {
703 /* Driver could have abort request completed in queue
704 * when link goes down. Allow for this transition.
705 */
706 if (phba->link_state >= LPFC_LINK_DOWN ||
707 phba->link_flag & LS_MDS_LOOPBACK) {
708 pring->flag &= ~LPFC_DEFERRED_RING_EVENT;
709 lpfc_sli_handle_slow_ring_event(phba, pring,
710 (status &
711 HA_RXMASK));
712 }
713 }
714 if (phba->sli_rev == LPFC_SLI_REV4)
715 lpfc_drain_txq(phba);
716 /*
717 * Turn on Ring interrupts
718 */
719 if (phba->sli_rev <= LPFC_SLI_REV3) {
720 spin_lock_irq(&phba->hbalock);
721 control = readl(phba->HCregaddr);
722 if (!(control & (HC_R0INT_ENA << LPFC_ELS_RING))) {
723 lpfc_debugfs_slow_ring_trc(phba,
724 "WRK Enable ring: cntl:x%x hacopy:x%x",
725 control, ha_copy, 0);
726
727 control |= (HC_R0INT_ENA << LPFC_ELS_RING);
728 writel(control, phba->HCregaddr);
729 readl(phba->HCregaddr); /* flush */
730 } else {
731 lpfc_debugfs_slow_ring_trc(phba,
732 "WRK Ring ok: cntl:x%x hacopy:x%x",
733 control, ha_copy, 0);
734 }
735 spin_unlock_irq(&phba->hbalock);
736 }
737 }
738 lpfc_work_list_done(phba);
739 }
740
741 int
lpfc_do_work(void * p)742 lpfc_do_work(void *p)
743 {
744 struct lpfc_hba *phba = p;
745 int rc;
746
747 set_user_nice(current, MIN_NICE);
748 current->flags |= PF_NOFREEZE;
749 phba->data_flags = 0;
750
751 while (!kthread_should_stop()) {
752 /* wait and check worker queue activities */
753 rc = wait_event_interruptible(phba->work_waitq,
754 (test_and_clear_bit(LPFC_DATA_READY,
755 &phba->data_flags)
756 || kthread_should_stop()));
757 /* Signal wakeup shall terminate the worker thread */
758 if (rc) {
759 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
760 "0433 Wakeup on signal: rc=x%x\n", rc);
761 break;
762 }
763
764 /* Attend pending lpfc data processing */
765 lpfc_work_done(phba);
766 }
767 phba->worker_thread = NULL;
768 lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
769 "0432 Worker thread stopped.\n");
770 return 0;
771 }
772
773 /*
774 * This is only called to handle FC worker events. Since this a rare
775 * occurrence, we allocate a struct lpfc_work_evt structure here instead of
776 * embedding it in the IOCB.
777 */
778 int
lpfc_workq_post_event(struct lpfc_hba * phba,void * arg1,void * arg2,uint32_t evt)779 lpfc_workq_post_event(struct lpfc_hba *phba, void *arg1, void *arg2,
780 uint32_t evt)
781 {
782 struct lpfc_work_evt *evtp;
783 unsigned long flags;
784
785 /*
786 * All Mailbox completions and LPFC_ELS_RING rcv ring IOCB events will
787 * be queued to worker thread for processing
788 */
789 evtp = kmalloc(sizeof(struct lpfc_work_evt), GFP_ATOMIC);
790 if (!evtp)
791 return 0;
792
793 evtp->evt_arg1 = arg1;
794 evtp->evt_arg2 = arg2;
795 evtp->evt = evt;
796
797 spin_lock_irqsave(&phba->hbalock, flags);
798 list_add_tail(&evtp->evt_listp, &phba->work_list);
799 spin_unlock_irqrestore(&phba->hbalock, flags);
800
801 lpfc_worker_wake_up(phba);
802
803 return 1;
804 }
805
806 void
lpfc_cleanup_rpis(struct lpfc_vport * vport,int remove)807 lpfc_cleanup_rpis(struct lpfc_vport *vport, int remove)
808 {
809 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
810 struct lpfc_hba *phba = vport->phba;
811 struct lpfc_nodelist *ndlp, *next_ndlp;
812
813 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) {
814 if (!NLP_CHK_NODE_ACT(ndlp))
815 continue;
816 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
817 continue;
818 if ((phba->sli3_options & LPFC_SLI3_VPORT_TEARDOWN) ||
819 ((vport->port_type == LPFC_NPIV_PORT) &&
820 (ndlp->nlp_DID == NameServer_DID)))
821 lpfc_unreg_rpi(vport, ndlp);
822
823 /* Leave Fabric nodes alone on link down */
824 if ((phba->sli_rev < LPFC_SLI_REV4) &&
825 (!remove && ndlp->nlp_type & NLP_FABRIC))
826 continue;
827
828 /* Notify transport of connectivity loss to trigger cleanup. */
829 if (phba->nvmet_support &&
830 ndlp->nlp_state == NLP_STE_UNMAPPED_NODE)
831 lpfc_nvmet_invalidate_host(phba, ndlp);
832
833 lpfc_disc_state_machine(vport, ndlp, NULL,
834 remove
835 ? NLP_EVT_DEVICE_RM
836 : NLP_EVT_DEVICE_RECOVERY);
837 }
838 if (phba->sli3_options & LPFC_SLI3_VPORT_TEARDOWN) {
839 if (phba->sli_rev == LPFC_SLI_REV4)
840 lpfc_sli4_unreg_all_rpis(vport);
841 lpfc_mbx_unreg_vpi(vport);
842 spin_lock_irq(shost->host_lock);
843 vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
844 spin_unlock_irq(shost->host_lock);
845 }
846 }
847
848 void
lpfc_port_link_failure(struct lpfc_vport * vport)849 lpfc_port_link_failure(struct lpfc_vport *vport)
850 {
851 lpfc_vport_set_state(vport, FC_VPORT_LINKDOWN);
852
853 /* Cleanup any outstanding received buffers */
854 lpfc_cleanup_rcv_buffers(vport);
855
856 /* Cleanup any outstanding RSCN activity */
857 lpfc_els_flush_rscn(vport);
858
859 /* Cleanup any outstanding ELS commands */
860 lpfc_els_flush_cmd(vport);
861
862 lpfc_cleanup_rpis(vport, 0);
863
864 /* Turn off discovery timer if its running */
865 lpfc_can_disctmo(vport);
866 }
867
868 void
lpfc_linkdown_port(struct lpfc_vport * vport)869 lpfc_linkdown_port(struct lpfc_vport *vport)
870 {
871 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
872
873 if (vport->cfg_enable_fc4_type != LPFC_ENABLE_NVME)
874 fc_host_post_event(shost, fc_get_event_number(),
875 FCH_EVT_LINKDOWN, 0);
876
877 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
878 "Link Down: state:x%x rtry:x%x flg:x%x",
879 vport->port_state, vport->fc_ns_retry, vport->fc_flag);
880
881 lpfc_port_link_failure(vport);
882
883 /* Stop delayed Nport discovery */
884 spin_lock_irq(shost->host_lock);
885 vport->fc_flag &= ~FC_DISC_DELAYED;
886 spin_unlock_irq(shost->host_lock);
887 del_timer_sync(&vport->delayed_disc_tmo);
888 }
889
890 int
lpfc_linkdown(struct lpfc_hba * phba)891 lpfc_linkdown(struct lpfc_hba *phba)
892 {
893 struct lpfc_vport *vport = phba->pport;
894 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
895 struct lpfc_vport **vports;
896 LPFC_MBOXQ_t *mb;
897 int i;
898
899 if (phba->link_state == LPFC_LINK_DOWN)
900 return 0;
901
902 /* Block all SCSI stack I/Os */
903 lpfc_scsi_dev_block(phba);
904
905 phba->defer_flogi_acc_flag = false;
906
907 spin_lock_irq(&phba->hbalock);
908 phba->fcf.fcf_flag &= ~(FCF_AVAILABLE | FCF_SCAN_DONE);
909 spin_unlock_irq(&phba->hbalock);
910 if (phba->link_state > LPFC_LINK_DOWN) {
911 phba->link_state = LPFC_LINK_DOWN;
912 if (phba->sli4_hba.conf_trunk) {
913 phba->trunk_link.link0.state = 0;
914 phba->trunk_link.link1.state = 0;
915 phba->trunk_link.link2.state = 0;
916 phba->trunk_link.link3.state = 0;
917 phba->sli4_hba.link_state.logical_speed =
918 LPFC_LINK_SPEED_UNKNOWN;
919 }
920 spin_lock_irq(shost->host_lock);
921 phba->pport->fc_flag &= ~FC_LBIT;
922 spin_unlock_irq(shost->host_lock);
923 }
924 vports = lpfc_create_vport_work_array(phba);
925 if (vports != NULL) {
926 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
927 /* Issue a LINK DOWN event to all nodes */
928 lpfc_linkdown_port(vports[i]);
929
930 vports[i]->fc_myDID = 0;
931
932 if ((vport->cfg_enable_fc4_type == LPFC_ENABLE_BOTH) ||
933 (vport->cfg_enable_fc4_type == LPFC_ENABLE_NVME)) {
934 if (phba->nvmet_support)
935 lpfc_nvmet_update_targetport(phba);
936 else
937 lpfc_nvme_update_localport(vports[i]);
938 }
939 }
940 }
941 lpfc_destroy_vport_work_array(phba, vports);
942
943 /* Clean up any SLI3 firmware default rpi's */
944 if (phba->sli_rev > LPFC_SLI_REV3)
945 goto skip_unreg_did;
946
947 mb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
948 if (mb) {
949 lpfc_unreg_did(phba, 0xffff, LPFC_UNREG_ALL_DFLT_RPIS, mb);
950 mb->vport = vport;
951 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
952 if (lpfc_sli_issue_mbox(phba, mb, MBX_NOWAIT)
953 == MBX_NOT_FINISHED) {
954 mempool_free(mb, phba->mbox_mem_pool);
955 }
956 }
957
958 skip_unreg_did:
959 /* Setup myDID for link up if we are in pt2pt mode */
960 if (phba->pport->fc_flag & FC_PT2PT) {
961 mb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
962 if (mb) {
963 lpfc_config_link(phba, mb);
964 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
965 mb->vport = vport;
966 if (lpfc_sli_issue_mbox(phba, mb, MBX_NOWAIT)
967 == MBX_NOT_FINISHED) {
968 mempool_free(mb, phba->mbox_mem_pool);
969 }
970 }
971 spin_lock_irq(shost->host_lock);
972 phba->pport->fc_flag &= ~(FC_PT2PT | FC_PT2PT_PLOGI);
973 phba->pport->rcv_flogi_cnt = 0;
974 spin_unlock_irq(shost->host_lock);
975 }
976 return 0;
977 }
978
979 static void
lpfc_linkup_cleanup_nodes(struct lpfc_vport * vport)980 lpfc_linkup_cleanup_nodes(struct lpfc_vport *vport)
981 {
982 struct lpfc_nodelist *ndlp;
983
984 list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
985 ndlp->nlp_fc4_type &= ~(NLP_FC4_FCP | NLP_FC4_NVME);
986 if (!NLP_CHK_NODE_ACT(ndlp))
987 continue;
988 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
989 continue;
990 if (ndlp->nlp_type & NLP_FABRIC) {
991 /* On Linkup its safe to clean up the ndlp
992 * from Fabric connections.
993 */
994 if (ndlp->nlp_DID != Fabric_DID)
995 lpfc_unreg_rpi(vport, ndlp);
996 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
997 } else if (!(ndlp->nlp_flag & NLP_NPR_ADISC)) {
998 /* Fail outstanding IO now since device is
999 * marked for PLOGI.
1000 */
1001 lpfc_unreg_rpi(vport, ndlp);
1002 }
1003 }
1004 }
1005
1006 static void
lpfc_linkup_port(struct lpfc_vport * vport)1007 lpfc_linkup_port(struct lpfc_vport *vport)
1008 {
1009 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1010 struct lpfc_hba *phba = vport->phba;
1011
1012 if ((vport->load_flag & FC_UNLOADING) != 0)
1013 return;
1014
1015 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
1016 "Link Up: top:x%x speed:x%x flg:x%x",
1017 phba->fc_topology, phba->fc_linkspeed, phba->link_flag);
1018
1019 /* If NPIV is not enabled, only bring the physical port up */
1020 if (!(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
1021 (vport != phba->pport))
1022 return;
1023
1024 if (vport->cfg_enable_fc4_type != LPFC_ENABLE_NVME)
1025 fc_host_post_event(shost, fc_get_event_number(),
1026 FCH_EVT_LINKUP, 0);
1027
1028 spin_lock_irq(shost->host_lock);
1029 vport->fc_flag &= ~(FC_PT2PT | FC_PT2PT_PLOGI | FC_ABORT_DISCOVERY |
1030 FC_RSCN_MODE | FC_NLP_MORE | FC_RSCN_DISCOVERY);
1031 vport->fc_flag |= FC_NDISC_ACTIVE;
1032 vport->fc_ns_retry = 0;
1033 spin_unlock_irq(shost->host_lock);
1034
1035 if (vport->fc_flag & FC_LBIT)
1036 lpfc_linkup_cleanup_nodes(vport);
1037
1038 }
1039
1040 static int
lpfc_linkup(struct lpfc_hba * phba)1041 lpfc_linkup(struct lpfc_hba *phba)
1042 {
1043 struct lpfc_vport **vports;
1044 int i;
1045 struct Scsi_Host *shost = lpfc_shost_from_vport(phba->pport);
1046
1047 phba->link_state = LPFC_LINK_UP;
1048
1049 /* Unblock fabric iocbs if they are blocked */
1050 clear_bit(FABRIC_COMANDS_BLOCKED, &phba->bit_flags);
1051 del_timer_sync(&phba->fabric_block_timer);
1052
1053 vports = lpfc_create_vport_work_array(phba);
1054 if (vports != NULL)
1055 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++)
1056 lpfc_linkup_port(vports[i]);
1057 lpfc_destroy_vport_work_array(phba, vports);
1058
1059 /* Clear the pport flogi counter in case the link down was
1060 * absorbed without an ACQE. No lock here - in worker thread
1061 * and discovery is synchronized.
1062 */
1063 spin_lock_irq(shost->host_lock);
1064 phba->pport->rcv_flogi_cnt = 0;
1065 spin_unlock_irq(shost->host_lock);
1066
1067 /* reinitialize initial FLOGI flag */
1068 phba->hba_flag &= ~(HBA_FLOGI_ISSUED);
1069 phba->defer_flogi_acc_flag = false;
1070
1071 return 0;
1072 }
1073
1074 /*
1075 * This routine handles processing a CLEAR_LA mailbox
1076 * command upon completion. It is setup in the LPFC_MBOXQ
1077 * as the completion routine when the command is
1078 * handed off to the SLI layer. SLI3 only.
1079 */
1080 static void
lpfc_mbx_cmpl_clear_la(struct lpfc_hba * phba,LPFC_MBOXQ_t * pmb)1081 lpfc_mbx_cmpl_clear_la(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
1082 {
1083 struct lpfc_vport *vport = pmb->vport;
1084 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1085 struct lpfc_sli *psli = &phba->sli;
1086 MAILBOX_t *mb = &pmb->u.mb;
1087 uint32_t control;
1088
1089 /* Since we don't do discovery right now, turn these off here */
1090 psli->sli3_ring[LPFC_EXTRA_RING].flag &= ~LPFC_STOP_IOCB_EVENT;
1091 psli->sli3_ring[LPFC_FCP_RING].flag &= ~LPFC_STOP_IOCB_EVENT;
1092
1093 /* Check for error */
1094 if ((mb->mbxStatus) && (mb->mbxStatus != 0x1601)) {
1095 /* CLEAR_LA mbox error <mbxStatus> state <hba_state> */
1096 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
1097 "0320 CLEAR_LA mbxStatus error x%x hba "
1098 "state x%x\n",
1099 mb->mbxStatus, vport->port_state);
1100 phba->link_state = LPFC_HBA_ERROR;
1101 goto out;
1102 }
1103
1104 if (vport->port_type == LPFC_PHYSICAL_PORT)
1105 phba->link_state = LPFC_HBA_READY;
1106
1107 spin_lock_irq(&phba->hbalock);
1108 psli->sli_flag |= LPFC_PROCESS_LA;
1109 control = readl(phba->HCregaddr);
1110 control |= HC_LAINT_ENA;
1111 writel(control, phba->HCregaddr);
1112 readl(phba->HCregaddr); /* flush */
1113 spin_unlock_irq(&phba->hbalock);
1114 mempool_free(pmb, phba->mbox_mem_pool);
1115 return;
1116
1117 out:
1118 /* Device Discovery completes */
1119 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
1120 "0225 Device Discovery completes\n");
1121 mempool_free(pmb, phba->mbox_mem_pool);
1122
1123 spin_lock_irq(shost->host_lock);
1124 vport->fc_flag &= ~FC_ABORT_DISCOVERY;
1125 spin_unlock_irq(shost->host_lock);
1126
1127 lpfc_can_disctmo(vport);
1128
1129 /* turn on Link Attention interrupts */
1130
1131 spin_lock_irq(&phba->hbalock);
1132 psli->sli_flag |= LPFC_PROCESS_LA;
1133 control = readl(phba->HCregaddr);
1134 control |= HC_LAINT_ENA;
1135 writel(control, phba->HCregaddr);
1136 readl(phba->HCregaddr); /* flush */
1137 spin_unlock_irq(&phba->hbalock);
1138
1139 return;
1140 }
1141
1142 void
lpfc_mbx_cmpl_local_config_link(struct lpfc_hba * phba,LPFC_MBOXQ_t * pmb)1143 lpfc_mbx_cmpl_local_config_link(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
1144 {
1145 struct lpfc_vport *vport = pmb->vport;
1146 LPFC_MBOXQ_t *sparam_mb;
1147 struct lpfc_dmabuf *sparam_mp;
1148 int rc;
1149
1150 if (pmb->u.mb.mbxStatus)
1151 goto out;
1152
1153 mempool_free(pmb, phba->mbox_mem_pool);
1154
1155 /* don't perform discovery for SLI4 loopback diagnostic test */
1156 if ((phba->sli_rev == LPFC_SLI_REV4) &&
1157 !(phba->hba_flag & HBA_FCOE_MODE) &&
1158 (phba->link_flag & LS_LOOPBACK_MODE))
1159 return;
1160
1161 if (phba->fc_topology == LPFC_TOPOLOGY_LOOP &&
1162 vport->fc_flag & FC_PUBLIC_LOOP &&
1163 !(vport->fc_flag & FC_LBIT)) {
1164 /* Need to wait for FAN - use discovery timer
1165 * for timeout. port_state is identically
1166 * LPFC_LOCAL_CFG_LINK while waiting for FAN
1167 */
1168 lpfc_set_disctmo(vport);
1169 return;
1170 }
1171
1172 /* Start discovery by sending a FLOGI. port_state is identically
1173 * LPFC_FLOGI while waiting for FLOGI cmpl.
1174 */
1175 if (vport->port_state != LPFC_FLOGI) {
1176 /* Issue MBX_READ_SPARAM to update CSPs before FLOGI if
1177 * bb-credit recovery is in place.
1178 */
1179 if (phba->bbcredit_support && phba->cfg_enable_bbcr &&
1180 !(phba->link_flag & LS_LOOPBACK_MODE)) {
1181 sparam_mb = mempool_alloc(phba->mbox_mem_pool,
1182 GFP_KERNEL);
1183 if (!sparam_mb)
1184 goto sparam_out;
1185
1186 rc = lpfc_read_sparam(phba, sparam_mb, 0);
1187 if (rc) {
1188 mempool_free(sparam_mb, phba->mbox_mem_pool);
1189 goto sparam_out;
1190 }
1191 sparam_mb->vport = vport;
1192 sparam_mb->mbox_cmpl = lpfc_mbx_cmpl_read_sparam;
1193 rc = lpfc_sli_issue_mbox(phba, sparam_mb, MBX_NOWAIT);
1194 if (rc == MBX_NOT_FINISHED) {
1195 sparam_mp = (struct lpfc_dmabuf *)
1196 sparam_mb->ctx_buf;
1197 lpfc_mbuf_free(phba, sparam_mp->virt,
1198 sparam_mp->phys);
1199 kfree(sparam_mp);
1200 sparam_mb->ctx_buf = NULL;
1201 mempool_free(sparam_mb, phba->mbox_mem_pool);
1202 goto sparam_out;
1203 }
1204
1205 phba->hba_flag |= HBA_DEFER_FLOGI;
1206 } else {
1207 lpfc_initial_flogi(vport);
1208 }
1209 } else {
1210 if (vport->fc_flag & FC_PT2PT)
1211 lpfc_disc_start(vport);
1212 }
1213 return;
1214
1215 out:
1216 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
1217 "0306 CONFIG_LINK mbxStatus error x%x "
1218 "HBA state x%x\n",
1219 pmb->u.mb.mbxStatus, vport->port_state);
1220 sparam_out:
1221 mempool_free(pmb, phba->mbox_mem_pool);
1222
1223 lpfc_linkdown(phba);
1224
1225 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
1226 "0200 CONFIG_LINK bad hba state x%x\n",
1227 vport->port_state);
1228
1229 lpfc_issue_clear_la(phba, vport);
1230 return;
1231 }
1232
1233 /**
1234 * lpfc_sli4_clear_fcf_rr_bmask
1235 * @phba: pointer to the struct lpfc_hba for this port.
1236 * This fucnction resets the round robin bit mask and clears the
1237 * fcf priority list. The list deletions are done while holding the
1238 * hbalock. The ON_LIST flag and the FLOGI_FAILED flags are cleared
1239 * from the lpfc_fcf_pri record.
1240 **/
1241 void
lpfc_sli4_clear_fcf_rr_bmask(struct lpfc_hba * phba)1242 lpfc_sli4_clear_fcf_rr_bmask(struct lpfc_hba *phba)
1243 {
1244 struct lpfc_fcf_pri *fcf_pri;
1245 struct lpfc_fcf_pri *next_fcf_pri;
1246 memset(phba->fcf.fcf_rr_bmask, 0, sizeof(*phba->fcf.fcf_rr_bmask));
1247 spin_lock_irq(&phba->hbalock);
1248 list_for_each_entry_safe(fcf_pri, next_fcf_pri,
1249 &phba->fcf.fcf_pri_list, list) {
1250 list_del_init(&fcf_pri->list);
1251 fcf_pri->fcf_rec.flag = 0;
1252 }
1253 spin_unlock_irq(&phba->hbalock);
1254 }
1255 static void
lpfc_mbx_cmpl_reg_fcfi(struct lpfc_hba * phba,LPFC_MBOXQ_t * mboxq)1256 lpfc_mbx_cmpl_reg_fcfi(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
1257 {
1258 struct lpfc_vport *vport = mboxq->vport;
1259
1260 if (mboxq->u.mb.mbxStatus) {
1261 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
1262 "2017 REG_FCFI mbxStatus error x%x "
1263 "HBA state x%x\n", mboxq->u.mb.mbxStatus,
1264 vport->port_state);
1265 goto fail_out;
1266 }
1267
1268 /* Start FCoE discovery by sending a FLOGI. */
1269 phba->fcf.fcfi = bf_get(lpfc_reg_fcfi_fcfi, &mboxq->u.mqe.un.reg_fcfi);
1270 /* Set the FCFI registered flag */
1271 spin_lock_irq(&phba->hbalock);
1272 phba->fcf.fcf_flag |= FCF_REGISTERED;
1273 spin_unlock_irq(&phba->hbalock);
1274
1275 /* If there is a pending FCoE event, restart FCF table scan. */
1276 if ((!(phba->hba_flag & FCF_RR_INPROG)) &&
1277 lpfc_check_pending_fcoe_event(phba, LPFC_UNREG_FCF))
1278 goto fail_out;
1279
1280 /* Mark successful completion of FCF table scan */
1281 spin_lock_irq(&phba->hbalock);
1282 phba->fcf.fcf_flag |= (FCF_SCAN_DONE | FCF_IN_USE);
1283 phba->hba_flag &= ~FCF_TS_INPROG;
1284 if (vport->port_state != LPFC_FLOGI) {
1285 phba->hba_flag |= FCF_RR_INPROG;
1286 spin_unlock_irq(&phba->hbalock);
1287 lpfc_issue_init_vfi(vport);
1288 goto out;
1289 }
1290 spin_unlock_irq(&phba->hbalock);
1291 goto out;
1292
1293 fail_out:
1294 spin_lock_irq(&phba->hbalock);
1295 phba->hba_flag &= ~FCF_RR_INPROG;
1296 spin_unlock_irq(&phba->hbalock);
1297 out:
1298 mempool_free(mboxq, phba->mbox_mem_pool);
1299 }
1300
1301 /**
1302 * lpfc_fab_name_match - Check if the fcf fabric name match.
1303 * @fab_name: pointer to fabric name.
1304 * @new_fcf_record: pointer to fcf record.
1305 *
1306 * This routine compare the fcf record's fabric name with provided
1307 * fabric name. If the fabric name are identical this function
1308 * returns 1 else return 0.
1309 **/
1310 static uint32_t
lpfc_fab_name_match(uint8_t * fab_name,struct fcf_record * new_fcf_record)1311 lpfc_fab_name_match(uint8_t *fab_name, struct fcf_record *new_fcf_record)
1312 {
1313 if (fab_name[0] != bf_get(lpfc_fcf_record_fab_name_0, new_fcf_record))
1314 return 0;
1315 if (fab_name[1] != bf_get(lpfc_fcf_record_fab_name_1, new_fcf_record))
1316 return 0;
1317 if (fab_name[2] != bf_get(lpfc_fcf_record_fab_name_2, new_fcf_record))
1318 return 0;
1319 if (fab_name[3] != bf_get(lpfc_fcf_record_fab_name_3, new_fcf_record))
1320 return 0;
1321 if (fab_name[4] != bf_get(lpfc_fcf_record_fab_name_4, new_fcf_record))
1322 return 0;
1323 if (fab_name[5] != bf_get(lpfc_fcf_record_fab_name_5, new_fcf_record))
1324 return 0;
1325 if (fab_name[6] != bf_get(lpfc_fcf_record_fab_name_6, new_fcf_record))
1326 return 0;
1327 if (fab_name[7] != bf_get(lpfc_fcf_record_fab_name_7, new_fcf_record))
1328 return 0;
1329 return 1;
1330 }
1331
1332 /**
1333 * lpfc_sw_name_match - Check if the fcf switch name match.
1334 * @sw_name: pointer to switch name.
1335 * @new_fcf_record: pointer to fcf record.
1336 *
1337 * This routine compare the fcf record's switch name with provided
1338 * switch name. If the switch name are identical this function
1339 * returns 1 else return 0.
1340 **/
1341 static uint32_t
lpfc_sw_name_match(uint8_t * sw_name,struct fcf_record * new_fcf_record)1342 lpfc_sw_name_match(uint8_t *sw_name, struct fcf_record *new_fcf_record)
1343 {
1344 if (sw_name[0] != bf_get(lpfc_fcf_record_switch_name_0, new_fcf_record))
1345 return 0;
1346 if (sw_name[1] != bf_get(lpfc_fcf_record_switch_name_1, new_fcf_record))
1347 return 0;
1348 if (sw_name[2] != bf_get(lpfc_fcf_record_switch_name_2, new_fcf_record))
1349 return 0;
1350 if (sw_name[3] != bf_get(lpfc_fcf_record_switch_name_3, new_fcf_record))
1351 return 0;
1352 if (sw_name[4] != bf_get(lpfc_fcf_record_switch_name_4, new_fcf_record))
1353 return 0;
1354 if (sw_name[5] != bf_get(lpfc_fcf_record_switch_name_5, new_fcf_record))
1355 return 0;
1356 if (sw_name[6] != bf_get(lpfc_fcf_record_switch_name_6, new_fcf_record))
1357 return 0;
1358 if (sw_name[7] != bf_get(lpfc_fcf_record_switch_name_7, new_fcf_record))
1359 return 0;
1360 return 1;
1361 }
1362
1363 /**
1364 * lpfc_mac_addr_match - Check if the fcf mac address match.
1365 * @mac_addr: pointer to mac address.
1366 * @new_fcf_record: pointer to fcf record.
1367 *
1368 * This routine compare the fcf record's mac address with HBA's
1369 * FCF mac address. If the mac addresses are identical this function
1370 * returns 1 else return 0.
1371 **/
1372 static uint32_t
lpfc_mac_addr_match(uint8_t * mac_addr,struct fcf_record * new_fcf_record)1373 lpfc_mac_addr_match(uint8_t *mac_addr, struct fcf_record *new_fcf_record)
1374 {
1375 if (mac_addr[0] != bf_get(lpfc_fcf_record_mac_0, new_fcf_record))
1376 return 0;
1377 if (mac_addr[1] != bf_get(lpfc_fcf_record_mac_1, new_fcf_record))
1378 return 0;
1379 if (mac_addr[2] != bf_get(lpfc_fcf_record_mac_2, new_fcf_record))
1380 return 0;
1381 if (mac_addr[3] != bf_get(lpfc_fcf_record_mac_3, new_fcf_record))
1382 return 0;
1383 if (mac_addr[4] != bf_get(lpfc_fcf_record_mac_4, new_fcf_record))
1384 return 0;
1385 if (mac_addr[5] != bf_get(lpfc_fcf_record_mac_5, new_fcf_record))
1386 return 0;
1387 return 1;
1388 }
1389
1390 static bool
lpfc_vlan_id_match(uint16_t curr_vlan_id,uint16_t new_vlan_id)1391 lpfc_vlan_id_match(uint16_t curr_vlan_id, uint16_t new_vlan_id)
1392 {
1393 return (curr_vlan_id == new_vlan_id);
1394 }
1395
1396 /**
1397 * __lpfc_update_fcf_record_pri - update the lpfc_fcf_pri record.
1398 * @phba: pointer to lpfc hba data structure.
1399 * @fcf_index: Index for the lpfc_fcf_record.
1400 * @new_fcf_record: pointer to hba fcf record.
1401 *
1402 * This routine updates the driver FCF priority record from the new HBA FCF
1403 * record. The hbalock is asserted held in the code path calling this
1404 * routine.
1405 **/
1406 static void
__lpfc_update_fcf_record_pri(struct lpfc_hba * phba,uint16_t fcf_index,struct fcf_record * new_fcf_record)1407 __lpfc_update_fcf_record_pri(struct lpfc_hba *phba, uint16_t fcf_index,
1408 struct fcf_record *new_fcf_record
1409 )
1410 {
1411 struct lpfc_fcf_pri *fcf_pri;
1412
1413 fcf_pri = &phba->fcf.fcf_pri[fcf_index];
1414 fcf_pri->fcf_rec.fcf_index = fcf_index;
1415 /* FCF record priority */
1416 fcf_pri->fcf_rec.priority = new_fcf_record->fip_priority;
1417
1418 }
1419
1420 /**
1421 * lpfc_copy_fcf_record - Copy fcf information to lpfc_hba.
1422 * @fcf_rec: pointer to driver fcf record.
1423 * @new_fcf_record: pointer to fcf record.
1424 *
1425 * This routine copies the FCF information from the FCF
1426 * record to lpfc_hba data structure.
1427 **/
1428 static void
lpfc_copy_fcf_record(struct lpfc_fcf_rec * fcf_rec,struct fcf_record * new_fcf_record)1429 lpfc_copy_fcf_record(struct lpfc_fcf_rec *fcf_rec,
1430 struct fcf_record *new_fcf_record)
1431 {
1432 /* Fabric name */
1433 fcf_rec->fabric_name[0] =
1434 bf_get(lpfc_fcf_record_fab_name_0, new_fcf_record);
1435 fcf_rec->fabric_name[1] =
1436 bf_get(lpfc_fcf_record_fab_name_1, new_fcf_record);
1437 fcf_rec->fabric_name[2] =
1438 bf_get(lpfc_fcf_record_fab_name_2, new_fcf_record);
1439 fcf_rec->fabric_name[3] =
1440 bf_get(lpfc_fcf_record_fab_name_3, new_fcf_record);
1441 fcf_rec->fabric_name[4] =
1442 bf_get(lpfc_fcf_record_fab_name_4, new_fcf_record);
1443 fcf_rec->fabric_name[5] =
1444 bf_get(lpfc_fcf_record_fab_name_5, new_fcf_record);
1445 fcf_rec->fabric_name[6] =
1446 bf_get(lpfc_fcf_record_fab_name_6, new_fcf_record);
1447 fcf_rec->fabric_name[7] =
1448 bf_get(lpfc_fcf_record_fab_name_7, new_fcf_record);
1449 /* Mac address */
1450 fcf_rec->mac_addr[0] = bf_get(lpfc_fcf_record_mac_0, new_fcf_record);
1451 fcf_rec->mac_addr[1] = bf_get(lpfc_fcf_record_mac_1, new_fcf_record);
1452 fcf_rec->mac_addr[2] = bf_get(lpfc_fcf_record_mac_2, new_fcf_record);
1453 fcf_rec->mac_addr[3] = bf_get(lpfc_fcf_record_mac_3, new_fcf_record);
1454 fcf_rec->mac_addr[4] = bf_get(lpfc_fcf_record_mac_4, new_fcf_record);
1455 fcf_rec->mac_addr[5] = bf_get(lpfc_fcf_record_mac_5, new_fcf_record);
1456 /* FCF record index */
1457 fcf_rec->fcf_indx = bf_get(lpfc_fcf_record_fcf_index, new_fcf_record);
1458 /* FCF record priority */
1459 fcf_rec->priority = new_fcf_record->fip_priority;
1460 /* Switch name */
1461 fcf_rec->switch_name[0] =
1462 bf_get(lpfc_fcf_record_switch_name_0, new_fcf_record);
1463 fcf_rec->switch_name[1] =
1464 bf_get(lpfc_fcf_record_switch_name_1, new_fcf_record);
1465 fcf_rec->switch_name[2] =
1466 bf_get(lpfc_fcf_record_switch_name_2, new_fcf_record);
1467 fcf_rec->switch_name[3] =
1468 bf_get(lpfc_fcf_record_switch_name_3, new_fcf_record);
1469 fcf_rec->switch_name[4] =
1470 bf_get(lpfc_fcf_record_switch_name_4, new_fcf_record);
1471 fcf_rec->switch_name[5] =
1472 bf_get(lpfc_fcf_record_switch_name_5, new_fcf_record);
1473 fcf_rec->switch_name[6] =
1474 bf_get(lpfc_fcf_record_switch_name_6, new_fcf_record);
1475 fcf_rec->switch_name[7] =
1476 bf_get(lpfc_fcf_record_switch_name_7, new_fcf_record);
1477 }
1478
1479 /**
1480 * lpfc_update_fcf_record - Update driver fcf record
1481 * @phba: pointer to lpfc hba data structure.
1482 * @fcf_rec: pointer to driver fcf record.
1483 * @new_fcf_record: pointer to hba fcf record.
1484 * @addr_mode: address mode to be set to the driver fcf record.
1485 * @vlan_id: vlan tag to be set to the driver fcf record.
1486 * @flag: flag bits to be set to the driver fcf record.
1487 *
1488 * This routine updates the driver FCF record from the new HBA FCF record
1489 * together with the address mode, vlan_id, and other informations. This
1490 * routine is called with the hbalock held.
1491 **/
1492 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)1493 __lpfc_update_fcf_record(struct lpfc_hba *phba, struct lpfc_fcf_rec *fcf_rec,
1494 struct fcf_record *new_fcf_record, uint32_t addr_mode,
1495 uint16_t vlan_id, uint32_t flag)
1496 {
1497 lockdep_assert_held(&phba->hbalock);
1498
1499 /* Copy the fields from the HBA's FCF record */
1500 lpfc_copy_fcf_record(fcf_rec, new_fcf_record);
1501 /* Update other fields of driver FCF record */
1502 fcf_rec->addr_mode = addr_mode;
1503 fcf_rec->vlan_id = vlan_id;
1504 fcf_rec->flag |= (flag | RECORD_VALID);
1505 __lpfc_update_fcf_record_pri(phba,
1506 bf_get(lpfc_fcf_record_fcf_index, new_fcf_record),
1507 new_fcf_record);
1508 }
1509
1510 /**
1511 * lpfc_register_fcf - Register the FCF with hba.
1512 * @phba: pointer to lpfc hba data structure.
1513 *
1514 * This routine issues a register fcfi mailbox command to register
1515 * the fcf with HBA.
1516 **/
1517 static void
lpfc_register_fcf(struct lpfc_hba * phba)1518 lpfc_register_fcf(struct lpfc_hba *phba)
1519 {
1520 LPFC_MBOXQ_t *fcf_mbxq;
1521 int rc;
1522
1523 spin_lock_irq(&phba->hbalock);
1524 /* If the FCF is not available do nothing. */
1525 if (!(phba->fcf.fcf_flag & FCF_AVAILABLE)) {
1526 phba->hba_flag &= ~(FCF_TS_INPROG | FCF_RR_INPROG);
1527 spin_unlock_irq(&phba->hbalock);
1528 return;
1529 }
1530
1531 /* The FCF is already registered, start discovery */
1532 if (phba->fcf.fcf_flag & FCF_REGISTERED) {
1533 phba->fcf.fcf_flag |= (FCF_SCAN_DONE | FCF_IN_USE);
1534 phba->hba_flag &= ~FCF_TS_INPROG;
1535 if (phba->pport->port_state != LPFC_FLOGI &&
1536 phba->pport->fc_flag & FC_FABRIC) {
1537 phba->hba_flag |= FCF_RR_INPROG;
1538 spin_unlock_irq(&phba->hbalock);
1539 lpfc_initial_flogi(phba->pport);
1540 return;
1541 }
1542 spin_unlock_irq(&phba->hbalock);
1543 return;
1544 }
1545 spin_unlock_irq(&phba->hbalock);
1546
1547 fcf_mbxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1548 if (!fcf_mbxq) {
1549 spin_lock_irq(&phba->hbalock);
1550 phba->hba_flag &= ~(FCF_TS_INPROG | FCF_RR_INPROG);
1551 spin_unlock_irq(&phba->hbalock);
1552 return;
1553 }
1554
1555 lpfc_reg_fcfi(phba, fcf_mbxq);
1556 fcf_mbxq->vport = phba->pport;
1557 fcf_mbxq->mbox_cmpl = lpfc_mbx_cmpl_reg_fcfi;
1558 rc = lpfc_sli_issue_mbox(phba, fcf_mbxq, MBX_NOWAIT);
1559 if (rc == MBX_NOT_FINISHED) {
1560 spin_lock_irq(&phba->hbalock);
1561 phba->hba_flag &= ~(FCF_TS_INPROG | FCF_RR_INPROG);
1562 spin_unlock_irq(&phba->hbalock);
1563 mempool_free(fcf_mbxq, phba->mbox_mem_pool);
1564 }
1565
1566 return;
1567 }
1568
1569 /**
1570 * lpfc_match_fcf_conn_list - Check if the FCF record can be used for discovery.
1571 * @phba: pointer to lpfc hba data structure.
1572 * @new_fcf_record: pointer to fcf record.
1573 * @boot_flag: Indicates if this record used by boot bios.
1574 * @addr_mode: The address mode to be used by this FCF
1575 * @vlan_id: The vlan id to be used as vlan tagging by this FCF.
1576 *
1577 * This routine compare the fcf record with connect list obtained from the
1578 * config region to decide if this FCF can be used for SAN discovery. It returns
1579 * 1 if this record can be used for SAN discovery else return zero. If this FCF
1580 * record can be used for SAN discovery, the boot_flag will indicate if this FCF
1581 * is used by boot bios and addr_mode will indicate the addressing mode to be
1582 * used for this FCF when the function returns.
1583 * If the FCF record need to be used with a particular vlan id, the vlan is
1584 * set in the vlan_id on return of the function. If not VLAN tagging need to
1585 * be used with the FCF vlan_id will be set to LPFC_FCOE_NULL_VID;
1586 **/
1587 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)1588 lpfc_match_fcf_conn_list(struct lpfc_hba *phba,
1589 struct fcf_record *new_fcf_record,
1590 uint32_t *boot_flag, uint32_t *addr_mode,
1591 uint16_t *vlan_id)
1592 {
1593 struct lpfc_fcf_conn_entry *conn_entry;
1594 int i, j, fcf_vlan_id = 0;
1595
1596 /* Find the lowest VLAN id in the FCF record */
1597 for (i = 0; i < 512; i++) {
1598 if (new_fcf_record->vlan_bitmap[i]) {
1599 fcf_vlan_id = i * 8;
1600 j = 0;
1601 while (!((new_fcf_record->vlan_bitmap[i] >> j) & 1)) {
1602 j++;
1603 fcf_vlan_id++;
1604 }
1605 break;
1606 }
1607 }
1608
1609 /* FCF not valid/available or solicitation in progress */
1610 if (!bf_get(lpfc_fcf_record_fcf_avail, new_fcf_record) ||
1611 !bf_get(lpfc_fcf_record_fcf_valid, new_fcf_record) ||
1612 bf_get(lpfc_fcf_record_fcf_sol, new_fcf_record))
1613 return 0;
1614
1615 if (!(phba->hba_flag & HBA_FIP_SUPPORT)) {
1616 *boot_flag = 0;
1617 *addr_mode = bf_get(lpfc_fcf_record_mac_addr_prov,
1618 new_fcf_record);
1619 if (phba->valid_vlan)
1620 *vlan_id = phba->vlan_id;
1621 else
1622 *vlan_id = LPFC_FCOE_NULL_VID;
1623 return 1;
1624 }
1625
1626 /*
1627 * If there are no FCF connection table entry, driver connect to all
1628 * FCFs.
1629 */
1630 if (list_empty(&phba->fcf_conn_rec_list)) {
1631 *boot_flag = 0;
1632 *addr_mode = bf_get(lpfc_fcf_record_mac_addr_prov,
1633 new_fcf_record);
1634
1635 /*
1636 * When there are no FCF connect entries, use driver's default
1637 * addressing mode - FPMA.
1638 */
1639 if (*addr_mode & LPFC_FCF_FPMA)
1640 *addr_mode = LPFC_FCF_FPMA;
1641
1642 /* If FCF record report a vlan id use that vlan id */
1643 if (fcf_vlan_id)
1644 *vlan_id = fcf_vlan_id;
1645 else
1646 *vlan_id = LPFC_FCOE_NULL_VID;
1647 return 1;
1648 }
1649
1650 list_for_each_entry(conn_entry,
1651 &phba->fcf_conn_rec_list, list) {
1652 if (!(conn_entry->conn_rec.flags & FCFCNCT_VALID))
1653 continue;
1654
1655 if ((conn_entry->conn_rec.flags & FCFCNCT_FBNM_VALID) &&
1656 !lpfc_fab_name_match(conn_entry->conn_rec.fabric_name,
1657 new_fcf_record))
1658 continue;
1659 if ((conn_entry->conn_rec.flags & FCFCNCT_SWNM_VALID) &&
1660 !lpfc_sw_name_match(conn_entry->conn_rec.switch_name,
1661 new_fcf_record))
1662 continue;
1663 if (conn_entry->conn_rec.flags & FCFCNCT_VLAN_VALID) {
1664 /*
1665 * If the vlan bit map does not have the bit set for the
1666 * vlan id to be used, then it is not a match.
1667 */
1668 if (!(new_fcf_record->vlan_bitmap
1669 [conn_entry->conn_rec.vlan_tag / 8] &
1670 (1 << (conn_entry->conn_rec.vlan_tag % 8))))
1671 continue;
1672 }
1673
1674 /*
1675 * If connection record does not support any addressing mode,
1676 * skip the FCF record.
1677 */
1678 if (!(bf_get(lpfc_fcf_record_mac_addr_prov, new_fcf_record)
1679 & (LPFC_FCF_FPMA | LPFC_FCF_SPMA)))
1680 continue;
1681
1682 /*
1683 * Check if the connection record specifies a required
1684 * addressing mode.
1685 */
1686 if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) &&
1687 !(conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED)) {
1688
1689 /*
1690 * If SPMA required but FCF not support this continue.
1691 */
1692 if ((conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) &&
1693 !(bf_get(lpfc_fcf_record_mac_addr_prov,
1694 new_fcf_record) & LPFC_FCF_SPMA))
1695 continue;
1696
1697 /*
1698 * If FPMA required but FCF not support this continue.
1699 */
1700 if (!(conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) &&
1701 !(bf_get(lpfc_fcf_record_mac_addr_prov,
1702 new_fcf_record) & LPFC_FCF_FPMA))
1703 continue;
1704 }
1705
1706 /*
1707 * This fcf record matches filtering criteria.
1708 */
1709 if (conn_entry->conn_rec.flags & FCFCNCT_BOOT)
1710 *boot_flag = 1;
1711 else
1712 *boot_flag = 0;
1713
1714 /*
1715 * If user did not specify any addressing mode, or if the
1716 * preferred addressing mode specified by user is not supported
1717 * by FCF, allow fabric to pick the addressing mode.
1718 */
1719 *addr_mode = bf_get(lpfc_fcf_record_mac_addr_prov,
1720 new_fcf_record);
1721 /*
1722 * If the user specified a required address mode, assign that
1723 * address mode
1724 */
1725 if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) &&
1726 (!(conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED)))
1727 *addr_mode = (conn_entry->conn_rec.flags &
1728 FCFCNCT_AM_SPMA) ?
1729 LPFC_FCF_SPMA : LPFC_FCF_FPMA;
1730 /*
1731 * If the user specified a preferred address mode, use the
1732 * addr mode only if FCF support the addr_mode.
1733 */
1734 else if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) &&
1735 (conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED) &&
1736 (conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) &&
1737 (*addr_mode & LPFC_FCF_SPMA))
1738 *addr_mode = LPFC_FCF_SPMA;
1739 else if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) &&
1740 (conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED) &&
1741 !(conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) &&
1742 (*addr_mode & LPFC_FCF_FPMA))
1743 *addr_mode = LPFC_FCF_FPMA;
1744
1745 /* If matching connect list has a vlan id, use it */
1746 if (conn_entry->conn_rec.flags & FCFCNCT_VLAN_VALID)
1747 *vlan_id = conn_entry->conn_rec.vlan_tag;
1748 /*
1749 * If no vlan id is specified in connect list, use the vlan id
1750 * in the FCF record
1751 */
1752 else if (fcf_vlan_id)
1753 *vlan_id = fcf_vlan_id;
1754 else
1755 *vlan_id = LPFC_FCOE_NULL_VID;
1756
1757 return 1;
1758 }
1759
1760 return 0;
1761 }
1762
1763 /**
1764 * lpfc_check_pending_fcoe_event - Check if there is pending fcoe event.
1765 * @phba: pointer to lpfc hba data structure.
1766 * @unreg_fcf: Unregister FCF if FCF table need to be re-scaned.
1767 *
1768 * This function check if there is any fcoe event pending while driver
1769 * scan FCF entries. If there is any pending event, it will restart the
1770 * FCF saning and return 1 else return 0.
1771 */
1772 int
lpfc_check_pending_fcoe_event(struct lpfc_hba * phba,uint8_t unreg_fcf)1773 lpfc_check_pending_fcoe_event(struct lpfc_hba *phba, uint8_t unreg_fcf)
1774 {
1775 /*
1776 * If the Link is up and no FCoE events while in the
1777 * FCF discovery, no need to restart FCF discovery.
1778 */
1779 if ((phba->link_state >= LPFC_LINK_UP) &&
1780 (phba->fcoe_eventtag == phba->fcoe_eventtag_at_fcf_scan))
1781 return 0;
1782
1783 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
1784 "2768 Pending link or FCF event during current "
1785 "handling of the previous event: link_state:x%x, "
1786 "evt_tag_at_scan:x%x, evt_tag_current:x%x\n",
1787 phba->link_state, phba->fcoe_eventtag_at_fcf_scan,
1788 phba->fcoe_eventtag);
1789
1790 spin_lock_irq(&phba->hbalock);
1791 phba->fcf.fcf_flag &= ~FCF_AVAILABLE;
1792 spin_unlock_irq(&phba->hbalock);
1793
1794 if (phba->link_state >= LPFC_LINK_UP) {
1795 lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY,
1796 "2780 Restart FCF table scan due to "
1797 "pending FCF event:evt_tag_at_scan:x%x, "
1798 "evt_tag_current:x%x\n",
1799 phba->fcoe_eventtag_at_fcf_scan,
1800 phba->fcoe_eventtag);
1801 lpfc_sli4_fcf_scan_read_fcf_rec(phba, LPFC_FCOE_FCF_GET_FIRST);
1802 } else {
1803 /*
1804 * Do not continue FCF discovery and clear FCF_TS_INPROG
1805 * flag
1806 */
1807 lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY,
1808 "2833 Stop FCF discovery process due to link "
1809 "state change (x%x)\n", phba->link_state);
1810 spin_lock_irq(&phba->hbalock);
1811 phba->hba_flag &= ~(FCF_TS_INPROG | FCF_RR_INPROG);
1812 phba->fcf.fcf_flag &= ~(FCF_REDISC_FOV | FCF_DISCOVERY);
1813 spin_unlock_irq(&phba->hbalock);
1814 }
1815
1816 /* Unregister the currently registered FCF if required */
1817 if (unreg_fcf) {
1818 spin_lock_irq(&phba->hbalock);
1819 phba->fcf.fcf_flag &= ~FCF_REGISTERED;
1820 spin_unlock_irq(&phba->hbalock);
1821 lpfc_sli4_unregister_fcf(phba);
1822 }
1823 return 1;
1824 }
1825
1826 /**
1827 * lpfc_sli4_new_fcf_random_select - Randomly select an eligible new fcf record
1828 * @phba: pointer to lpfc hba data structure.
1829 * @fcf_cnt: number of eligible fcf record seen so far.
1830 *
1831 * This function makes an running random selection decision on FCF record to
1832 * use through a sequence of @fcf_cnt eligible FCF records with equal
1833 * probability. To perform integer manunipulation of random numbers with
1834 * size unit32_t, the lower 16 bits of the 32-bit random number returned
1835 * from prandom_u32() are taken as the random random number generated.
1836 *
1837 * Returns true when outcome is for the newly read FCF record should be
1838 * chosen; otherwise, return false when outcome is for keeping the previously
1839 * chosen FCF record.
1840 **/
1841 static bool
lpfc_sli4_new_fcf_random_select(struct lpfc_hba * phba,uint32_t fcf_cnt)1842 lpfc_sli4_new_fcf_random_select(struct lpfc_hba *phba, uint32_t fcf_cnt)
1843 {
1844 uint32_t rand_num;
1845
1846 /* Get 16-bit uniform random number */
1847 rand_num = 0xFFFF & prandom_u32();
1848
1849 /* Decision with probability 1/fcf_cnt */
1850 if ((fcf_cnt * rand_num) < 0xFFFF)
1851 return true;
1852 else
1853 return false;
1854 }
1855
1856 /**
1857 * lpfc_sli4_fcf_rec_mbox_parse - Parse read_fcf mbox command.
1858 * @phba: pointer to lpfc hba data structure.
1859 * @mboxq: pointer to mailbox object.
1860 * @next_fcf_index: pointer to holder of next fcf index.
1861 *
1862 * This routine parses the non-embedded fcf mailbox command by performing the
1863 * necessarily error checking, non-embedded read FCF record mailbox command
1864 * SGE parsing, and endianness swapping.
1865 *
1866 * Returns the pointer to the new FCF record in the non-embedded mailbox
1867 * command DMA memory if successfully, other NULL.
1868 */
1869 static struct fcf_record *
lpfc_sli4_fcf_rec_mbox_parse(struct lpfc_hba * phba,LPFC_MBOXQ_t * mboxq,uint16_t * next_fcf_index)1870 lpfc_sli4_fcf_rec_mbox_parse(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq,
1871 uint16_t *next_fcf_index)
1872 {
1873 void *virt_addr;
1874 struct lpfc_mbx_sge sge;
1875 struct lpfc_mbx_read_fcf_tbl *read_fcf;
1876 uint32_t shdr_status, shdr_add_status, if_type;
1877 union lpfc_sli4_cfg_shdr *shdr;
1878 struct fcf_record *new_fcf_record;
1879
1880 /* Get the first SGE entry from the non-embedded DMA memory. This
1881 * routine only uses a single SGE.
1882 */
1883 lpfc_sli4_mbx_sge_get(mboxq, 0, &sge);
1884 if (unlikely(!mboxq->sge_array)) {
1885 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
1886 "2524 Failed to get the non-embedded SGE "
1887 "virtual address\n");
1888 return NULL;
1889 }
1890 virt_addr = mboxq->sge_array->addr[0];
1891
1892 shdr = (union lpfc_sli4_cfg_shdr *)virt_addr;
1893 lpfc_sli_pcimem_bcopy(shdr, shdr,
1894 sizeof(union lpfc_sli4_cfg_shdr));
1895 shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
1896 if_type = bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf);
1897 shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response);
1898 if (shdr_status || shdr_add_status) {
1899 if (shdr_status == STATUS_FCF_TABLE_EMPTY ||
1900 if_type == LPFC_SLI_INTF_IF_TYPE_2)
1901 lpfc_printf_log(phba, KERN_ERR,
1902 LOG_TRACE_EVENT,
1903 "2726 READ_FCF_RECORD Indicates empty "
1904 "FCF table.\n");
1905 else
1906 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
1907 "2521 READ_FCF_RECORD mailbox failed "
1908 "with status x%x add_status x%x, "
1909 "mbx\n", shdr_status, shdr_add_status);
1910 return NULL;
1911 }
1912
1913 /* Interpreting the returned information of the FCF record */
1914 read_fcf = (struct lpfc_mbx_read_fcf_tbl *)virt_addr;
1915 lpfc_sli_pcimem_bcopy(read_fcf, read_fcf,
1916 sizeof(struct lpfc_mbx_read_fcf_tbl));
1917 *next_fcf_index = bf_get(lpfc_mbx_read_fcf_tbl_nxt_vindx, read_fcf);
1918 new_fcf_record = (struct fcf_record *)(virt_addr +
1919 sizeof(struct lpfc_mbx_read_fcf_tbl));
1920 lpfc_sli_pcimem_bcopy(new_fcf_record, new_fcf_record,
1921 offsetof(struct fcf_record, vlan_bitmap));
1922 new_fcf_record->word137 = le32_to_cpu(new_fcf_record->word137);
1923 new_fcf_record->word138 = le32_to_cpu(new_fcf_record->word138);
1924
1925 return new_fcf_record;
1926 }
1927
1928 /**
1929 * lpfc_sli4_log_fcf_record_info - Log the information of a fcf record
1930 * @phba: pointer to lpfc hba data structure.
1931 * @fcf_record: pointer to the fcf record.
1932 * @vlan_id: the lowest vlan identifier associated to this fcf record.
1933 * @next_fcf_index: the index to the next fcf record in hba's fcf table.
1934 *
1935 * This routine logs the detailed FCF record if the LOG_FIP loggin is
1936 * enabled.
1937 **/
1938 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)1939 lpfc_sli4_log_fcf_record_info(struct lpfc_hba *phba,
1940 struct fcf_record *fcf_record,
1941 uint16_t vlan_id,
1942 uint16_t next_fcf_index)
1943 {
1944 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
1945 "2764 READ_FCF_RECORD:\n"
1946 "\tFCF_Index : x%x\n"
1947 "\tFCF_Avail : x%x\n"
1948 "\tFCF_Valid : x%x\n"
1949 "\tFCF_SOL : x%x\n"
1950 "\tFIP_Priority : x%x\n"
1951 "\tMAC_Provider : x%x\n"
1952 "\tLowest VLANID : x%x\n"
1953 "\tFCF_MAC Addr : x%x:%x:%x:%x:%x:%x\n"
1954 "\tFabric_Name : x%x:%x:%x:%x:%x:%x:%x:%x\n"
1955 "\tSwitch_Name : x%x:%x:%x:%x:%x:%x:%x:%x\n"
1956 "\tNext_FCF_Index: x%x\n",
1957 bf_get(lpfc_fcf_record_fcf_index, fcf_record),
1958 bf_get(lpfc_fcf_record_fcf_avail, fcf_record),
1959 bf_get(lpfc_fcf_record_fcf_valid, fcf_record),
1960 bf_get(lpfc_fcf_record_fcf_sol, fcf_record),
1961 fcf_record->fip_priority,
1962 bf_get(lpfc_fcf_record_mac_addr_prov, fcf_record),
1963 vlan_id,
1964 bf_get(lpfc_fcf_record_mac_0, fcf_record),
1965 bf_get(lpfc_fcf_record_mac_1, fcf_record),
1966 bf_get(lpfc_fcf_record_mac_2, fcf_record),
1967 bf_get(lpfc_fcf_record_mac_3, fcf_record),
1968 bf_get(lpfc_fcf_record_mac_4, fcf_record),
1969 bf_get(lpfc_fcf_record_mac_5, fcf_record),
1970 bf_get(lpfc_fcf_record_fab_name_0, fcf_record),
1971 bf_get(lpfc_fcf_record_fab_name_1, fcf_record),
1972 bf_get(lpfc_fcf_record_fab_name_2, fcf_record),
1973 bf_get(lpfc_fcf_record_fab_name_3, fcf_record),
1974 bf_get(lpfc_fcf_record_fab_name_4, fcf_record),
1975 bf_get(lpfc_fcf_record_fab_name_5, fcf_record),
1976 bf_get(lpfc_fcf_record_fab_name_6, fcf_record),
1977 bf_get(lpfc_fcf_record_fab_name_7, fcf_record),
1978 bf_get(lpfc_fcf_record_switch_name_0, fcf_record),
1979 bf_get(lpfc_fcf_record_switch_name_1, fcf_record),
1980 bf_get(lpfc_fcf_record_switch_name_2, fcf_record),
1981 bf_get(lpfc_fcf_record_switch_name_3, fcf_record),
1982 bf_get(lpfc_fcf_record_switch_name_4, fcf_record),
1983 bf_get(lpfc_fcf_record_switch_name_5, fcf_record),
1984 bf_get(lpfc_fcf_record_switch_name_6, fcf_record),
1985 bf_get(lpfc_fcf_record_switch_name_7, fcf_record),
1986 next_fcf_index);
1987 }
1988
1989 /**
1990 * lpfc_sli4_fcf_record_match - testing new FCF record for matching existing FCF
1991 * @phba: pointer to lpfc hba data structure.
1992 * @fcf_rec: pointer to an existing FCF record.
1993 * @new_fcf_record: pointer to a new FCF record.
1994 * @new_vlan_id: vlan id from the new FCF record.
1995 *
1996 * This function performs matching test of a new FCF record against an existing
1997 * FCF record. If the new_vlan_id passed in is LPFC_FCOE_IGNORE_VID, vlan id
1998 * will not be used as part of the FCF record matching criteria.
1999 *
2000 * Returns true if all the fields matching, otherwise returns false.
2001 */
2002 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)2003 lpfc_sli4_fcf_record_match(struct lpfc_hba *phba,
2004 struct lpfc_fcf_rec *fcf_rec,
2005 struct fcf_record *new_fcf_record,
2006 uint16_t new_vlan_id)
2007 {
2008 if (new_vlan_id != LPFC_FCOE_IGNORE_VID)
2009 if (!lpfc_vlan_id_match(fcf_rec->vlan_id, new_vlan_id))
2010 return false;
2011 if (!lpfc_mac_addr_match(fcf_rec->mac_addr, new_fcf_record))
2012 return false;
2013 if (!lpfc_sw_name_match(fcf_rec->switch_name, new_fcf_record))
2014 return false;
2015 if (!lpfc_fab_name_match(fcf_rec->fabric_name, new_fcf_record))
2016 return false;
2017 if (fcf_rec->priority != new_fcf_record->fip_priority)
2018 return false;
2019 return true;
2020 }
2021
2022 /**
2023 * lpfc_sli4_fcf_rr_next_proc - processing next roundrobin fcf
2024 * @vport: Pointer to vport object.
2025 * @fcf_index: index to next fcf.
2026 *
2027 * This function processing the roundrobin fcf failover to next fcf index.
2028 * When this function is invoked, there will be a current fcf registered
2029 * for flogi.
2030 * Return: 0 for continue retrying flogi on currently registered fcf;
2031 * 1 for stop flogi on currently registered fcf;
2032 */
lpfc_sli4_fcf_rr_next_proc(struct lpfc_vport * vport,uint16_t fcf_index)2033 int lpfc_sli4_fcf_rr_next_proc(struct lpfc_vport *vport, uint16_t fcf_index)
2034 {
2035 struct lpfc_hba *phba = vport->phba;
2036 int rc;
2037
2038 if (fcf_index == LPFC_FCOE_FCF_NEXT_NONE) {
2039 spin_lock_irq(&phba->hbalock);
2040 if (phba->hba_flag & HBA_DEVLOSS_TMO) {
2041 spin_unlock_irq(&phba->hbalock);
2042 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2043 "2872 Devloss tmo with no eligible "
2044 "FCF, unregister in-use FCF (x%x) "
2045 "and rescan FCF table\n",
2046 phba->fcf.current_rec.fcf_indx);
2047 lpfc_unregister_fcf_rescan(phba);
2048 goto stop_flogi_current_fcf;
2049 }
2050 /* Mark the end to FLOGI roundrobin failover */
2051 phba->hba_flag &= ~FCF_RR_INPROG;
2052 /* Allow action to new fcf asynchronous event */
2053 phba->fcf.fcf_flag &= ~(FCF_AVAILABLE | FCF_SCAN_DONE);
2054 spin_unlock_irq(&phba->hbalock);
2055 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2056 "2865 No FCF available, stop roundrobin FCF "
2057 "failover and change port state:x%x/x%x\n",
2058 phba->pport->port_state, LPFC_VPORT_UNKNOWN);
2059 phba->pport->port_state = LPFC_VPORT_UNKNOWN;
2060
2061 if (!phba->fcf.fcf_redisc_attempted) {
2062 lpfc_unregister_fcf(phba);
2063
2064 rc = lpfc_sli4_redisc_fcf_table(phba);
2065 if (!rc) {
2066 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2067 "3195 Rediscover FCF table\n");
2068 phba->fcf.fcf_redisc_attempted = 1;
2069 lpfc_sli4_clear_fcf_rr_bmask(phba);
2070 } else {
2071 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP,
2072 "3196 Rediscover FCF table "
2073 "failed. Status:x%x\n", rc);
2074 }
2075 } else {
2076 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP,
2077 "3197 Already rediscover FCF table "
2078 "attempted. No more retry\n");
2079 }
2080 goto stop_flogi_current_fcf;
2081 } else {
2082 lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_ELS,
2083 "2794 Try FLOGI roundrobin FCF failover to "
2084 "(x%x)\n", fcf_index);
2085 rc = lpfc_sli4_fcf_rr_read_fcf_rec(phba, fcf_index);
2086 if (rc)
2087 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP | LOG_ELS,
2088 "2761 FLOGI roundrobin FCF failover "
2089 "failed (rc:x%x) to read FCF (x%x)\n",
2090 rc, phba->fcf.current_rec.fcf_indx);
2091 else
2092 goto stop_flogi_current_fcf;
2093 }
2094 return 0;
2095
2096 stop_flogi_current_fcf:
2097 lpfc_can_disctmo(vport);
2098 return 1;
2099 }
2100
2101 /**
2102 * lpfc_sli4_fcf_pri_list_del
2103 * @phba: pointer to lpfc hba data structure.
2104 * @fcf_index: the index of the fcf record to delete
2105 * This routine checks the on list flag of the fcf_index to be deleted.
2106 * If it is one the list then it is removed from the list, and the flag
2107 * is cleared. This routine grab the hbalock before removing the fcf
2108 * record from the list.
2109 **/
lpfc_sli4_fcf_pri_list_del(struct lpfc_hba * phba,uint16_t fcf_index)2110 static void lpfc_sli4_fcf_pri_list_del(struct lpfc_hba *phba,
2111 uint16_t fcf_index)
2112 {
2113 struct lpfc_fcf_pri *new_fcf_pri;
2114
2115 new_fcf_pri = &phba->fcf.fcf_pri[fcf_index];
2116 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2117 "3058 deleting idx x%x pri x%x flg x%x\n",
2118 fcf_index, new_fcf_pri->fcf_rec.priority,
2119 new_fcf_pri->fcf_rec.flag);
2120 spin_lock_irq(&phba->hbalock);
2121 if (new_fcf_pri->fcf_rec.flag & LPFC_FCF_ON_PRI_LIST) {
2122 if (phba->fcf.current_rec.priority ==
2123 new_fcf_pri->fcf_rec.priority)
2124 phba->fcf.eligible_fcf_cnt--;
2125 list_del_init(&new_fcf_pri->list);
2126 new_fcf_pri->fcf_rec.flag &= ~LPFC_FCF_ON_PRI_LIST;
2127 }
2128 spin_unlock_irq(&phba->hbalock);
2129 }
2130
2131 /**
2132 * lpfc_sli4_set_fcf_flogi_fail
2133 * @phba: pointer to lpfc hba data structure.
2134 * @fcf_index: the index of the fcf record to update
2135 * This routine acquires the hbalock and then set the LPFC_FCF_FLOGI_FAILED
2136 * flag so the the round robin slection for the particular priority level
2137 * will try a different fcf record that does not have this bit set.
2138 * If the fcf record is re-read for any reason this flag is cleared brfore
2139 * adding it to the priority list.
2140 **/
2141 void
lpfc_sli4_set_fcf_flogi_fail(struct lpfc_hba * phba,uint16_t fcf_index)2142 lpfc_sli4_set_fcf_flogi_fail(struct lpfc_hba *phba, uint16_t fcf_index)
2143 {
2144 struct lpfc_fcf_pri *new_fcf_pri;
2145 new_fcf_pri = &phba->fcf.fcf_pri[fcf_index];
2146 spin_lock_irq(&phba->hbalock);
2147 new_fcf_pri->fcf_rec.flag |= LPFC_FCF_FLOGI_FAILED;
2148 spin_unlock_irq(&phba->hbalock);
2149 }
2150
2151 /**
2152 * lpfc_sli4_fcf_pri_list_add
2153 * @phba: pointer to lpfc hba data structure.
2154 * @fcf_index: the index of the fcf record to add
2155 * @new_fcf_record: pointer to a new FCF record.
2156 * This routine checks the priority of the fcf_index to be added.
2157 * If it is a lower priority than the current head of the fcf_pri list
2158 * then it is added to the list in the right order.
2159 * If it is the same priority as the current head of the list then it
2160 * is added to the head of the list and its bit in the rr_bmask is set.
2161 * If the fcf_index to be added is of a higher priority than the current
2162 * head of the list then the rr_bmask is cleared, its bit is set in the
2163 * rr_bmask and it is added to the head of the list.
2164 * returns:
2165 * 0=success 1=failure
2166 **/
lpfc_sli4_fcf_pri_list_add(struct lpfc_hba * phba,uint16_t fcf_index,struct fcf_record * new_fcf_record)2167 static int lpfc_sli4_fcf_pri_list_add(struct lpfc_hba *phba,
2168 uint16_t fcf_index,
2169 struct fcf_record *new_fcf_record)
2170 {
2171 uint16_t current_fcf_pri;
2172 uint16_t last_index;
2173 struct lpfc_fcf_pri *fcf_pri;
2174 struct lpfc_fcf_pri *next_fcf_pri;
2175 struct lpfc_fcf_pri *new_fcf_pri;
2176 int ret;
2177
2178 new_fcf_pri = &phba->fcf.fcf_pri[fcf_index];
2179 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2180 "3059 adding idx x%x pri x%x flg x%x\n",
2181 fcf_index, new_fcf_record->fip_priority,
2182 new_fcf_pri->fcf_rec.flag);
2183 spin_lock_irq(&phba->hbalock);
2184 if (new_fcf_pri->fcf_rec.flag & LPFC_FCF_ON_PRI_LIST)
2185 list_del_init(&new_fcf_pri->list);
2186 new_fcf_pri->fcf_rec.fcf_index = fcf_index;
2187 new_fcf_pri->fcf_rec.priority = new_fcf_record->fip_priority;
2188 if (list_empty(&phba->fcf.fcf_pri_list)) {
2189 list_add(&new_fcf_pri->list, &phba->fcf.fcf_pri_list);
2190 ret = lpfc_sli4_fcf_rr_index_set(phba,
2191 new_fcf_pri->fcf_rec.fcf_index);
2192 goto out;
2193 }
2194
2195 last_index = find_first_bit(phba->fcf.fcf_rr_bmask,
2196 LPFC_SLI4_FCF_TBL_INDX_MAX);
2197 if (last_index >= LPFC_SLI4_FCF_TBL_INDX_MAX) {
2198 ret = 0; /* Empty rr list */
2199 goto out;
2200 }
2201 current_fcf_pri = phba->fcf.fcf_pri[last_index].fcf_rec.priority;
2202 if (new_fcf_pri->fcf_rec.priority <= current_fcf_pri) {
2203 list_add(&new_fcf_pri->list, &phba->fcf.fcf_pri_list);
2204 if (new_fcf_pri->fcf_rec.priority < current_fcf_pri) {
2205 memset(phba->fcf.fcf_rr_bmask, 0,
2206 sizeof(*phba->fcf.fcf_rr_bmask));
2207 /* fcfs_at_this_priority_level = 1; */
2208 phba->fcf.eligible_fcf_cnt = 1;
2209 } else
2210 /* fcfs_at_this_priority_level++; */
2211 phba->fcf.eligible_fcf_cnt++;
2212 ret = lpfc_sli4_fcf_rr_index_set(phba,
2213 new_fcf_pri->fcf_rec.fcf_index);
2214 goto out;
2215 }
2216
2217 list_for_each_entry_safe(fcf_pri, next_fcf_pri,
2218 &phba->fcf.fcf_pri_list, list) {
2219 if (new_fcf_pri->fcf_rec.priority <=
2220 fcf_pri->fcf_rec.priority) {
2221 if (fcf_pri->list.prev == &phba->fcf.fcf_pri_list)
2222 list_add(&new_fcf_pri->list,
2223 &phba->fcf.fcf_pri_list);
2224 else
2225 list_add(&new_fcf_pri->list,
2226 &((struct lpfc_fcf_pri *)
2227 fcf_pri->list.prev)->list);
2228 ret = 0;
2229 goto out;
2230 } else if (fcf_pri->list.next == &phba->fcf.fcf_pri_list
2231 || new_fcf_pri->fcf_rec.priority <
2232 next_fcf_pri->fcf_rec.priority) {
2233 list_add(&new_fcf_pri->list, &fcf_pri->list);
2234 ret = 0;
2235 goto out;
2236 }
2237 if (new_fcf_pri->fcf_rec.priority > fcf_pri->fcf_rec.priority)
2238 continue;
2239
2240 }
2241 ret = 1;
2242 out:
2243 /* we use = instead of |= to clear the FLOGI_FAILED flag. */
2244 new_fcf_pri->fcf_rec.flag = LPFC_FCF_ON_PRI_LIST;
2245 spin_unlock_irq(&phba->hbalock);
2246 return ret;
2247 }
2248
2249 /**
2250 * lpfc_mbx_cmpl_fcf_scan_read_fcf_rec - fcf scan read_fcf mbox cmpl handler.
2251 * @phba: pointer to lpfc hba data structure.
2252 * @mboxq: pointer to mailbox object.
2253 *
2254 * This function iterates through all the fcf records available in
2255 * HBA and chooses the optimal FCF record for discovery. After finding
2256 * the FCF for discovery it registers the FCF record and kicks start
2257 * discovery.
2258 * If FCF_IN_USE flag is set in currently used FCF, the routine tries to
2259 * use an FCF record which matches fabric name and mac address of the
2260 * currently used FCF record.
2261 * If the driver supports only one FCF, it will try to use the FCF record
2262 * used by BOOT_BIOS.
2263 */
2264 void
lpfc_mbx_cmpl_fcf_scan_read_fcf_rec(struct lpfc_hba * phba,LPFC_MBOXQ_t * mboxq)2265 lpfc_mbx_cmpl_fcf_scan_read_fcf_rec(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
2266 {
2267 struct fcf_record *new_fcf_record;
2268 uint32_t boot_flag, addr_mode;
2269 uint16_t fcf_index, next_fcf_index;
2270 struct lpfc_fcf_rec *fcf_rec = NULL;
2271 uint16_t vlan_id = LPFC_FCOE_NULL_VID;
2272 bool select_new_fcf;
2273 int rc;
2274
2275 /* If there is pending FCoE event restart FCF table scan */
2276 if (lpfc_check_pending_fcoe_event(phba, LPFC_SKIP_UNREG_FCF)) {
2277 lpfc_sli4_mbox_cmd_free(phba, mboxq);
2278 return;
2279 }
2280
2281 /* Parse the FCF record from the non-embedded mailbox command */
2282 new_fcf_record = lpfc_sli4_fcf_rec_mbox_parse(phba, mboxq,
2283 &next_fcf_index);
2284 if (!new_fcf_record) {
2285 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
2286 "2765 Mailbox command READ_FCF_RECORD "
2287 "failed to retrieve a FCF record.\n");
2288 /* Let next new FCF event trigger fast failover */
2289 spin_lock_irq(&phba->hbalock);
2290 phba->hba_flag &= ~FCF_TS_INPROG;
2291 spin_unlock_irq(&phba->hbalock);
2292 lpfc_sli4_mbox_cmd_free(phba, mboxq);
2293 return;
2294 }
2295
2296 /* Check the FCF record against the connection list */
2297 rc = lpfc_match_fcf_conn_list(phba, new_fcf_record, &boot_flag,
2298 &addr_mode, &vlan_id);
2299
2300 /* Log the FCF record information if turned on */
2301 lpfc_sli4_log_fcf_record_info(phba, new_fcf_record, vlan_id,
2302 next_fcf_index);
2303
2304 /*
2305 * If the fcf record does not match with connect list entries
2306 * read the next entry; otherwise, this is an eligible FCF
2307 * record for roundrobin FCF failover.
2308 */
2309 if (!rc) {
2310 lpfc_sli4_fcf_pri_list_del(phba,
2311 bf_get(lpfc_fcf_record_fcf_index,
2312 new_fcf_record));
2313 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP,
2314 "2781 FCF (x%x) failed connection "
2315 "list check: (x%x/x%x/%x)\n",
2316 bf_get(lpfc_fcf_record_fcf_index,
2317 new_fcf_record),
2318 bf_get(lpfc_fcf_record_fcf_avail,
2319 new_fcf_record),
2320 bf_get(lpfc_fcf_record_fcf_valid,
2321 new_fcf_record),
2322 bf_get(lpfc_fcf_record_fcf_sol,
2323 new_fcf_record));
2324 if ((phba->fcf.fcf_flag & FCF_IN_USE) &&
2325 lpfc_sli4_fcf_record_match(phba, &phba->fcf.current_rec,
2326 new_fcf_record, LPFC_FCOE_IGNORE_VID)) {
2327 if (bf_get(lpfc_fcf_record_fcf_index, new_fcf_record) !=
2328 phba->fcf.current_rec.fcf_indx) {
2329 lpfc_printf_log(phba, KERN_ERR,
2330 LOG_TRACE_EVENT,
2331 "2862 FCF (x%x) matches property "
2332 "of in-use FCF (x%x)\n",
2333 bf_get(lpfc_fcf_record_fcf_index,
2334 new_fcf_record),
2335 phba->fcf.current_rec.fcf_indx);
2336 goto read_next_fcf;
2337 }
2338 /*
2339 * In case the current in-use FCF record becomes
2340 * invalid/unavailable during FCF discovery that
2341 * was not triggered by fast FCF failover process,
2342 * treat it as fast FCF failover.
2343 */
2344 if (!(phba->fcf.fcf_flag & FCF_REDISC_PEND) &&
2345 !(phba->fcf.fcf_flag & FCF_REDISC_FOV)) {
2346 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP,
2347 "2835 Invalid in-use FCF "
2348 "(x%x), enter FCF failover "
2349 "table scan.\n",
2350 phba->fcf.current_rec.fcf_indx);
2351 spin_lock_irq(&phba->hbalock);
2352 phba->fcf.fcf_flag |= FCF_REDISC_FOV;
2353 spin_unlock_irq(&phba->hbalock);
2354 lpfc_sli4_mbox_cmd_free(phba, mboxq);
2355 lpfc_sli4_fcf_scan_read_fcf_rec(phba,
2356 LPFC_FCOE_FCF_GET_FIRST);
2357 return;
2358 }
2359 }
2360 goto read_next_fcf;
2361 } else {
2362 fcf_index = bf_get(lpfc_fcf_record_fcf_index, new_fcf_record);
2363 rc = lpfc_sli4_fcf_pri_list_add(phba, fcf_index,
2364 new_fcf_record);
2365 if (rc)
2366 goto read_next_fcf;
2367 }
2368
2369 /*
2370 * If this is not the first FCF discovery of the HBA, use last
2371 * FCF record for the discovery. The condition that a rescan
2372 * matches the in-use FCF record: fabric name, switch name, mac
2373 * address, and vlan_id.
2374 */
2375 spin_lock_irq(&phba->hbalock);
2376 if (phba->fcf.fcf_flag & FCF_IN_USE) {
2377 if (phba->cfg_fcf_failover_policy == LPFC_FCF_FOV &&
2378 lpfc_sli4_fcf_record_match(phba, &phba->fcf.current_rec,
2379 new_fcf_record, vlan_id)) {
2380 if (bf_get(lpfc_fcf_record_fcf_index, new_fcf_record) ==
2381 phba->fcf.current_rec.fcf_indx) {
2382 phba->fcf.fcf_flag |= FCF_AVAILABLE;
2383 if (phba->fcf.fcf_flag & FCF_REDISC_PEND)
2384 /* Stop FCF redisc wait timer */
2385 __lpfc_sli4_stop_fcf_redisc_wait_timer(
2386 phba);
2387 else if (phba->fcf.fcf_flag & FCF_REDISC_FOV)
2388 /* Fast failover, mark completed */
2389 phba->fcf.fcf_flag &= ~FCF_REDISC_FOV;
2390 spin_unlock_irq(&phba->hbalock);
2391 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2392 "2836 New FCF matches in-use "
2393 "FCF (x%x), port_state:x%x, "
2394 "fc_flag:x%x\n",
2395 phba->fcf.current_rec.fcf_indx,
2396 phba->pport->port_state,
2397 phba->pport->fc_flag);
2398 goto out;
2399 } else
2400 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
2401 "2863 New FCF (x%x) matches "
2402 "property of in-use FCF (x%x)\n",
2403 bf_get(lpfc_fcf_record_fcf_index,
2404 new_fcf_record),
2405 phba->fcf.current_rec.fcf_indx);
2406 }
2407 /*
2408 * Read next FCF record from HBA searching for the matching
2409 * with in-use record only if not during the fast failover
2410 * period. In case of fast failover period, it shall try to
2411 * determine whether the FCF record just read should be the
2412 * next candidate.
2413 */
2414 if (!(phba->fcf.fcf_flag & FCF_REDISC_FOV)) {
2415 spin_unlock_irq(&phba->hbalock);
2416 goto read_next_fcf;
2417 }
2418 }
2419 /*
2420 * Update on failover FCF record only if it's in FCF fast-failover
2421 * period; otherwise, update on current FCF record.
2422 */
2423 if (phba->fcf.fcf_flag & FCF_REDISC_FOV)
2424 fcf_rec = &phba->fcf.failover_rec;
2425 else
2426 fcf_rec = &phba->fcf.current_rec;
2427
2428 if (phba->fcf.fcf_flag & FCF_AVAILABLE) {
2429 /*
2430 * If the driver FCF record does not have boot flag
2431 * set and new hba fcf record has boot flag set, use
2432 * the new hba fcf record.
2433 */
2434 if (boot_flag && !(fcf_rec->flag & BOOT_ENABLE)) {
2435 /* Choose this FCF record */
2436 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2437 "2837 Update current FCF record "
2438 "(x%x) with new FCF record (x%x)\n",
2439 fcf_rec->fcf_indx,
2440 bf_get(lpfc_fcf_record_fcf_index,
2441 new_fcf_record));
2442 __lpfc_update_fcf_record(phba, fcf_rec, new_fcf_record,
2443 addr_mode, vlan_id, BOOT_ENABLE);
2444 spin_unlock_irq(&phba->hbalock);
2445 goto read_next_fcf;
2446 }
2447 /*
2448 * If the driver FCF record has boot flag set and the
2449 * new hba FCF record does not have boot flag, read
2450 * the next FCF record.
2451 */
2452 if (!boot_flag && (fcf_rec->flag & BOOT_ENABLE)) {
2453 spin_unlock_irq(&phba->hbalock);
2454 goto read_next_fcf;
2455 }
2456 /*
2457 * If the new hba FCF record has lower priority value
2458 * than the driver FCF record, use the new record.
2459 */
2460 if (new_fcf_record->fip_priority < fcf_rec->priority) {
2461 /* Choose the new FCF record with lower priority */
2462 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2463 "2838 Update current FCF record "
2464 "(x%x) with new FCF record (x%x)\n",
2465 fcf_rec->fcf_indx,
2466 bf_get(lpfc_fcf_record_fcf_index,
2467 new_fcf_record));
2468 __lpfc_update_fcf_record(phba, fcf_rec, new_fcf_record,
2469 addr_mode, vlan_id, 0);
2470 /* Reset running random FCF selection count */
2471 phba->fcf.eligible_fcf_cnt = 1;
2472 } else if (new_fcf_record->fip_priority == fcf_rec->priority) {
2473 /* Update running random FCF selection count */
2474 phba->fcf.eligible_fcf_cnt++;
2475 select_new_fcf = lpfc_sli4_new_fcf_random_select(phba,
2476 phba->fcf.eligible_fcf_cnt);
2477 if (select_new_fcf) {
2478 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2479 "2839 Update current FCF record "
2480 "(x%x) with new FCF record (x%x)\n",
2481 fcf_rec->fcf_indx,
2482 bf_get(lpfc_fcf_record_fcf_index,
2483 new_fcf_record));
2484 /* Choose the new FCF by random selection */
2485 __lpfc_update_fcf_record(phba, fcf_rec,
2486 new_fcf_record,
2487 addr_mode, vlan_id, 0);
2488 }
2489 }
2490 spin_unlock_irq(&phba->hbalock);
2491 goto read_next_fcf;
2492 }
2493 /*
2494 * This is the first suitable FCF record, choose this record for
2495 * initial best-fit FCF.
2496 */
2497 if (fcf_rec) {
2498 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2499 "2840 Update initial FCF candidate "
2500 "with FCF (x%x)\n",
2501 bf_get(lpfc_fcf_record_fcf_index,
2502 new_fcf_record));
2503 __lpfc_update_fcf_record(phba, fcf_rec, new_fcf_record,
2504 addr_mode, vlan_id, (boot_flag ?
2505 BOOT_ENABLE : 0));
2506 phba->fcf.fcf_flag |= FCF_AVAILABLE;
2507 /* Setup initial running random FCF selection count */
2508 phba->fcf.eligible_fcf_cnt = 1;
2509 }
2510 spin_unlock_irq(&phba->hbalock);
2511 goto read_next_fcf;
2512
2513 read_next_fcf:
2514 lpfc_sli4_mbox_cmd_free(phba, mboxq);
2515 if (next_fcf_index == LPFC_FCOE_FCF_NEXT_NONE || next_fcf_index == 0) {
2516 if (phba->fcf.fcf_flag & FCF_REDISC_FOV) {
2517 /*
2518 * Case of FCF fast failover scan
2519 */
2520
2521 /*
2522 * It has not found any suitable FCF record, cancel
2523 * FCF scan inprogress, and do nothing
2524 */
2525 if (!(phba->fcf.failover_rec.flag & RECORD_VALID)) {
2526 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP,
2527 "2782 No suitable FCF found: "
2528 "(x%x/x%x)\n",
2529 phba->fcoe_eventtag_at_fcf_scan,
2530 bf_get(lpfc_fcf_record_fcf_index,
2531 new_fcf_record));
2532 spin_lock_irq(&phba->hbalock);
2533 if (phba->hba_flag & HBA_DEVLOSS_TMO) {
2534 phba->hba_flag &= ~FCF_TS_INPROG;
2535 spin_unlock_irq(&phba->hbalock);
2536 /* Unregister in-use FCF and rescan */
2537 lpfc_printf_log(phba, KERN_INFO,
2538 LOG_FIP,
2539 "2864 On devloss tmo "
2540 "unreg in-use FCF and "
2541 "rescan FCF table\n");
2542 lpfc_unregister_fcf_rescan(phba);
2543 return;
2544 }
2545 /*
2546 * Let next new FCF event trigger fast failover
2547 */
2548 phba->hba_flag &= ~FCF_TS_INPROG;
2549 spin_unlock_irq(&phba->hbalock);
2550 return;
2551 }
2552 /*
2553 * It has found a suitable FCF record that is not
2554 * the same as in-use FCF record, unregister the
2555 * in-use FCF record, replace the in-use FCF record
2556 * with the new FCF record, mark FCF fast failover
2557 * completed, and then start register the new FCF
2558 * record.
2559 */
2560
2561 /* Unregister the current in-use FCF record */
2562 lpfc_unregister_fcf(phba);
2563
2564 /* Replace in-use record with the new record */
2565 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2566 "2842 Replace in-use FCF (x%x) "
2567 "with failover FCF (x%x)\n",
2568 phba->fcf.current_rec.fcf_indx,
2569 phba->fcf.failover_rec.fcf_indx);
2570 memcpy(&phba->fcf.current_rec,
2571 &phba->fcf.failover_rec,
2572 sizeof(struct lpfc_fcf_rec));
2573 /*
2574 * Mark the fast FCF failover rediscovery completed
2575 * and the start of the first round of the roundrobin
2576 * FCF failover.
2577 */
2578 spin_lock_irq(&phba->hbalock);
2579 phba->fcf.fcf_flag &= ~FCF_REDISC_FOV;
2580 spin_unlock_irq(&phba->hbalock);
2581 /* Register to the new FCF record */
2582 lpfc_register_fcf(phba);
2583 } else {
2584 /*
2585 * In case of transaction period to fast FCF failover,
2586 * do nothing when search to the end of the FCF table.
2587 */
2588 if ((phba->fcf.fcf_flag & FCF_REDISC_EVT) ||
2589 (phba->fcf.fcf_flag & FCF_REDISC_PEND))
2590 return;
2591
2592 if (phba->cfg_fcf_failover_policy == LPFC_FCF_FOV &&
2593 phba->fcf.fcf_flag & FCF_IN_USE) {
2594 /*
2595 * In case the current in-use FCF record no
2596 * longer existed during FCF discovery that
2597 * was not triggered by fast FCF failover
2598 * process, treat it as fast FCF failover.
2599 */
2600 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2601 "2841 In-use FCF record (x%x) "
2602 "not reported, entering fast "
2603 "FCF failover mode scanning.\n",
2604 phba->fcf.current_rec.fcf_indx);
2605 spin_lock_irq(&phba->hbalock);
2606 phba->fcf.fcf_flag |= FCF_REDISC_FOV;
2607 spin_unlock_irq(&phba->hbalock);
2608 lpfc_sli4_fcf_scan_read_fcf_rec(phba,
2609 LPFC_FCOE_FCF_GET_FIRST);
2610 return;
2611 }
2612 /* Register to the new FCF record */
2613 lpfc_register_fcf(phba);
2614 }
2615 } else
2616 lpfc_sli4_fcf_scan_read_fcf_rec(phba, next_fcf_index);
2617 return;
2618
2619 out:
2620 lpfc_sli4_mbox_cmd_free(phba, mboxq);
2621 lpfc_register_fcf(phba);
2622
2623 return;
2624 }
2625
2626 /**
2627 * lpfc_mbx_cmpl_fcf_rr_read_fcf_rec - fcf roundrobin read_fcf mbox cmpl hdler
2628 * @phba: pointer to lpfc hba data structure.
2629 * @mboxq: pointer to mailbox object.
2630 *
2631 * This is the callback function for FLOGI failure roundrobin FCF failover
2632 * read FCF record mailbox command from the eligible FCF record bmask for
2633 * performing the failover. If the FCF read back is not valid/available, it
2634 * fails through to retrying FLOGI to the currently registered FCF again.
2635 * Otherwise, if the FCF read back is valid and available, it will set the
2636 * newly read FCF record to the failover FCF record, unregister currently
2637 * registered FCF record, copy the failover FCF record to the current
2638 * FCF record, and then register the current FCF record before proceeding
2639 * to trying FLOGI on the new failover FCF.
2640 */
2641 void
lpfc_mbx_cmpl_fcf_rr_read_fcf_rec(struct lpfc_hba * phba,LPFC_MBOXQ_t * mboxq)2642 lpfc_mbx_cmpl_fcf_rr_read_fcf_rec(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
2643 {
2644 struct fcf_record *new_fcf_record;
2645 uint32_t boot_flag, addr_mode;
2646 uint16_t next_fcf_index, fcf_index;
2647 uint16_t current_fcf_index;
2648 uint16_t vlan_id;
2649 int rc;
2650
2651 /* If link state is not up, stop the roundrobin failover process */
2652 if (phba->link_state < LPFC_LINK_UP) {
2653 spin_lock_irq(&phba->hbalock);
2654 phba->fcf.fcf_flag &= ~FCF_DISCOVERY;
2655 phba->hba_flag &= ~FCF_RR_INPROG;
2656 spin_unlock_irq(&phba->hbalock);
2657 goto out;
2658 }
2659
2660 /* Parse the FCF record from the non-embedded mailbox command */
2661 new_fcf_record = lpfc_sli4_fcf_rec_mbox_parse(phba, mboxq,
2662 &next_fcf_index);
2663 if (!new_fcf_record) {
2664 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP,
2665 "2766 Mailbox command READ_FCF_RECORD "
2666 "failed to retrieve a FCF record. "
2667 "hba_flg x%x fcf_flg x%x\n", phba->hba_flag,
2668 phba->fcf.fcf_flag);
2669 lpfc_unregister_fcf_rescan(phba);
2670 goto out;
2671 }
2672
2673 /* Get the needed parameters from FCF record */
2674 rc = lpfc_match_fcf_conn_list(phba, new_fcf_record, &boot_flag,
2675 &addr_mode, &vlan_id);
2676
2677 /* Log the FCF record information if turned on */
2678 lpfc_sli4_log_fcf_record_info(phba, new_fcf_record, vlan_id,
2679 next_fcf_index);
2680
2681 fcf_index = bf_get(lpfc_fcf_record_fcf_index, new_fcf_record);
2682 if (!rc) {
2683 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2684 "2848 Remove ineligible FCF (x%x) from "
2685 "from roundrobin bmask\n", fcf_index);
2686 /* Clear roundrobin bmask bit for ineligible FCF */
2687 lpfc_sli4_fcf_rr_index_clear(phba, fcf_index);
2688 /* Perform next round of roundrobin FCF failover */
2689 fcf_index = lpfc_sli4_fcf_rr_next_index_get(phba);
2690 rc = lpfc_sli4_fcf_rr_next_proc(phba->pport, fcf_index);
2691 if (rc)
2692 goto out;
2693 goto error_out;
2694 }
2695
2696 if (fcf_index == phba->fcf.current_rec.fcf_indx) {
2697 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2698 "2760 Perform FLOGI roundrobin FCF failover: "
2699 "FCF (x%x) back to FCF (x%x)\n",
2700 phba->fcf.current_rec.fcf_indx, fcf_index);
2701 /* Wait 500 ms before retrying FLOGI to current FCF */
2702 msleep(500);
2703 lpfc_issue_init_vfi(phba->pport);
2704 goto out;
2705 }
2706
2707 /* Upload new FCF record to the failover FCF record */
2708 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2709 "2834 Update current FCF (x%x) with new FCF (x%x)\n",
2710 phba->fcf.failover_rec.fcf_indx, fcf_index);
2711 spin_lock_irq(&phba->hbalock);
2712 __lpfc_update_fcf_record(phba, &phba->fcf.failover_rec,
2713 new_fcf_record, addr_mode, vlan_id,
2714 (boot_flag ? BOOT_ENABLE : 0));
2715 spin_unlock_irq(&phba->hbalock);
2716
2717 current_fcf_index = phba->fcf.current_rec.fcf_indx;
2718
2719 /* Unregister the current in-use FCF record */
2720 lpfc_unregister_fcf(phba);
2721
2722 /* Replace in-use record with the new record */
2723 memcpy(&phba->fcf.current_rec, &phba->fcf.failover_rec,
2724 sizeof(struct lpfc_fcf_rec));
2725
2726 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2727 "2783 Perform FLOGI roundrobin FCF failover: FCF "
2728 "(x%x) to FCF (x%x)\n", current_fcf_index, fcf_index);
2729
2730 error_out:
2731 lpfc_register_fcf(phba);
2732 out:
2733 lpfc_sli4_mbox_cmd_free(phba, mboxq);
2734 }
2735
2736 /**
2737 * lpfc_mbx_cmpl_read_fcf_rec - read fcf completion handler.
2738 * @phba: pointer to lpfc hba data structure.
2739 * @mboxq: pointer to mailbox object.
2740 *
2741 * This is the callback function of read FCF record mailbox command for
2742 * updating the eligible FCF bmask for FLOGI failure roundrobin FCF
2743 * failover when a new FCF event happened. If the FCF read back is
2744 * valid/available and it passes the connection list check, it updates
2745 * the bmask for the eligible FCF record for roundrobin failover.
2746 */
2747 void
lpfc_mbx_cmpl_read_fcf_rec(struct lpfc_hba * phba,LPFC_MBOXQ_t * mboxq)2748 lpfc_mbx_cmpl_read_fcf_rec(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
2749 {
2750 struct fcf_record *new_fcf_record;
2751 uint32_t boot_flag, addr_mode;
2752 uint16_t fcf_index, next_fcf_index;
2753 uint16_t vlan_id;
2754 int rc;
2755
2756 /* If link state is not up, no need to proceed */
2757 if (phba->link_state < LPFC_LINK_UP)
2758 goto out;
2759
2760 /* If FCF discovery period is over, no need to proceed */
2761 if (!(phba->fcf.fcf_flag & FCF_DISCOVERY))
2762 goto out;
2763
2764 /* Parse the FCF record from the non-embedded mailbox command */
2765 new_fcf_record = lpfc_sli4_fcf_rec_mbox_parse(phba, mboxq,
2766 &next_fcf_index);
2767 if (!new_fcf_record) {
2768 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2769 "2767 Mailbox command READ_FCF_RECORD "
2770 "failed to retrieve a FCF record.\n");
2771 goto out;
2772 }
2773
2774 /* Check the connection list for eligibility */
2775 rc = lpfc_match_fcf_conn_list(phba, new_fcf_record, &boot_flag,
2776 &addr_mode, &vlan_id);
2777
2778 /* Log the FCF record information if turned on */
2779 lpfc_sli4_log_fcf_record_info(phba, new_fcf_record, vlan_id,
2780 next_fcf_index);
2781
2782 if (!rc)
2783 goto out;
2784
2785 /* Update the eligible FCF record index bmask */
2786 fcf_index = bf_get(lpfc_fcf_record_fcf_index, new_fcf_record);
2787
2788 rc = lpfc_sli4_fcf_pri_list_add(phba, fcf_index, new_fcf_record);
2789
2790 out:
2791 lpfc_sli4_mbox_cmd_free(phba, mboxq);
2792 }
2793
2794 /**
2795 * lpfc_init_vfi_cmpl - Completion handler for init_vfi mbox command.
2796 * @phba: pointer to lpfc hba data structure.
2797 * @mboxq: pointer to mailbox data structure.
2798 *
2799 * This function handles completion of init vfi mailbox command.
2800 */
2801 static void
lpfc_init_vfi_cmpl(struct lpfc_hba * phba,LPFC_MBOXQ_t * mboxq)2802 lpfc_init_vfi_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
2803 {
2804 struct lpfc_vport *vport = mboxq->vport;
2805
2806 /*
2807 * VFI not supported on interface type 0, just do the flogi
2808 * Also continue if the VFI is in use - just use the same one.
2809 */
2810 if (mboxq->u.mb.mbxStatus &&
2811 (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) !=
2812 LPFC_SLI_INTF_IF_TYPE_0) &&
2813 mboxq->u.mb.mbxStatus != MBX_VFI_IN_USE) {
2814 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
2815 "2891 Init VFI mailbox failed 0x%x\n",
2816 mboxq->u.mb.mbxStatus);
2817 mempool_free(mboxq, phba->mbox_mem_pool);
2818 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
2819 return;
2820 }
2821
2822 lpfc_initial_flogi(vport);
2823 mempool_free(mboxq, phba->mbox_mem_pool);
2824 return;
2825 }
2826
2827 /**
2828 * lpfc_issue_init_vfi - Issue init_vfi mailbox command.
2829 * @vport: pointer to lpfc_vport data structure.
2830 *
2831 * This function issue a init_vfi mailbox command to initialize the VFI and
2832 * VPI for the physical port.
2833 */
2834 void
lpfc_issue_init_vfi(struct lpfc_vport * vport)2835 lpfc_issue_init_vfi(struct lpfc_vport *vport)
2836 {
2837 LPFC_MBOXQ_t *mboxq;
2838 int rc;
2839 struct lpfc_hba *phba = vport->phba;
2840
2841 mboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
2842 if (!mboxq) {
2843 lpfc_printf_vlog(vport, KERN_ERR,
2844 LOG_TRACE_EVENT, "2892 Failed to allocate "
2845 "init_vfi mailbox\n");
2846 return;
2847 }
2848 lpfc_init_vfi(mboxq, vport);
2849 mboxq->mbox_cmpl = lpfc_init_vfi_cmpl;
2850 rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_NOWAIT);
2851 if (rc == MBX_NOT_FINISHED) {
2852 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
2853 "2893 Failed to issue init_vfi mailbox\n");
2854 mempool_free(mboxq, vport->phba->mbox_mem_pool);
2855 }
2856 }
2857
2858 /**
2859 * lpfc_init_vpi_cmpl - Completion handler for init_vpi mbox command.
2860 * @phba: pointer to lpfc hba data structure.
2861 * @mboxq: pointer to mailbox data structure.
2862 *
2863 * This function handles completion of init vpi mailbox command.
2864 */
2865 void
lpfc_init_vpi_cmpl(struct lpfc_hba * phba,LPFC_MBOXQ_t * mboxq)2866 lpfc_init_vpi_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
2867 {
2868 struct lpfc_vport *vport = mboxq->vport;
2869 struct lpfc_nodelist *ndlp;
2870 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2871
2872 if (mboxq->u.mb.mbxStatus) {
2873 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
2874 "2609 Init VPI mailbox failed 0x%x\n",
2875 mboxq->u.mb.mbxStatus);
2876 mempool_free(mboxq, phba->mbox_mem_pool);
2877 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
2878 return;
2879 }
2880 spin_lock_irq(shost->host_lock);
2881 vport->fc_flag &= ~FC_VPORT_NEEDS_INIT_VPI;
2882 spin_unlock_irq(shost->host_lock);
2883
2884 /* If this port is physical port or FDISC is done, do reg_vpi */
2885 if ((phba->pport == vport) || (vport->port_state == LPFC_FDISC)) {
2886 ndlp = lpfc_findnode_did(vport, Fabric_DID);
2887 if (!ndlp)
2888 lpfc_printf_vlog(vport, KERN_ERR,
2889 LOG_TRACE_EVENT,
2890 "2731 Cannot find fabric "
2891 "controller node\n");
2892 else
2893 lpfc_register_new_vport(phba, vport, ndlp);
2894 mempool_free(mboxq, phba->mbox_mem_pool);
2895 return;
2896 }
2897
2898 if (phba->link_flag & LS_NPIV_FAB_SUPPORTED)
2899 lpfc_initial_fdisc(vport);
2900 else {
2901 lpfc_vport_set_state(vport, FC_VPORT_NO_FABRIC_SUPP);
2902 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
2903 "2606 No NPIV Fabric support\n");
2904 }
2905 mempool_free(mboxq, phba->mbox_mem_pool);
2906 return;
2907 }
2908
2909 /**
2910 * lpfc_issue_init_vpi - Issue init_vpi mailbox command.
2911 * @vport: pointer to lpfc_vport data structure.
2912 *
2913 * This function issue a init_vpi mailbox command to initialize
2914 * VPI for the vport.
2915 */
2916 void
lpfc_issue_init_vpi(struct lpfc_vport * vport)2917 lpfc_issue_init_vpi(struct lpfc_vport *vport)
2918 {
2919 LPFC_MBOXQ_t *mboxq;
2920 int rc, vpi;
2921
2922 if ((vport->port_type != LPFC_PHYSICAL_PORT) && (!vport->vpi)) {
2923 vpi = lpfc_alloc_vpi(vport->phba);
2924 if (!vpi) {
2925 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
2926 "3303 Failed to obtain vport vpi\n");
2927 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
2928 return;
2929 }
2930 vport->vpi = vpi;
2931 }
2932
2933 mboxq = mempool_alloc(vport->phba->mbox_mem_pool, GFP_KERNEL);
2934 if (!mboxq) {
2935 lpfc_printf_vlog(vport, KERN_ERR,
2936 LOG_TRACE_EVENT, "2607 Failed to allocate "
2937 "init_vpi mailbox\n");
2938 return;
2939 }
2940 lpfc_init_vpi(vport->phba, mboxq, vport->vpi);
2941 mboxq->vport = vport;
2942 mboxq->mbox_cmpl = lpfc_init_vpi_cmpl;
2943 rc = lpfc_sli_issue_mbox(vport->phba, mboxq, MBX_NOWAIT);
2944 if (rc == MBX_NOT_FINISHED) {
2945 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
2946 "2608 Failed to issue init_vpi mailbox\n");
2947 mempool_free(mboxq, vport->phba->mbox_mem_pool);
2948 }
2949 }
2950
2951 /**
2952 * lpfc_start_fdiscs - send fdiscs for each vports on this port.
2953 * @phba: pointer to lpfc hba data structure.
2954 *
2955 * This function loops through the list of vports on the @phba and issues an
2956 * FDISC if possible.
2957 */
2958 void
lpfc_start_fdiscs(struct lpfc_hba * phba)2959 lpfc_start_fdiscs(struct lpfc_hba *phba)
2960 {
2961 struct lpfc_vport **vports;
2962 int i;
2963
2964 vports = lpfc_create_vport_work_array(phba);
2965 if (vports != NULL) {
2966 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
2967 if (vports[i]->port_type == LPFC_PHYSICAL_PORT)
2968 continue;
2969 /* There are no vpi for this vport */
2970 if (vports[i]->vpi > phba->max_vpi) {
2971 lpfc_vport_set_state(vports[i],
2972 FC_VPORT_FAILED);
2973 continue;
2974 }
2975 if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
2976 lpfc_vport_set_state(vports[i],
2977 FC_VPORT_LINKDOWN);
2978 continue;
2979 }
2980 if (vports[i]->fc_flag & FC_VPORT_NEEDS_INIT_VPI) {
2981 lpfc_issue_init_vpi(vports[i]);
2982 continue;
2983 }
2984 if (phba->link_flag & LS_NPIV_FAB_SUPPORTED)
2985 lpfc_initial_fdisc(vports[i]);
2986 else {
2987 lpfc_vport_set_state(vports[i],
2988 FC_VPORT_NO_FABRIC_SUPP);
2989 lpfc_printf_vlog(vports[i], KERN_ERR,
2990 LOG_TRACE_EVENT,
2991 "0259 No NPIV "
2992 "Fabric support\n");
2993 }
2994 }
2995 }
2996 lpfc_destroy_vport_work_array(phba, vports);
2997 }
2998
2999 void
lpfc_mbx_cmpl_reg_vfi(struct lpfc_hba * phba,LPFC_MBOXQ_t * mboxq)3000 lpfc_mbx_cmpl_reg_vfi(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
3001 {
3002 struct lpfc_dmabuf *dmabuf = mboxq->ctx_buf;
3003 struct lpfc_vport *vport = mboxq->vport;
3004 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3005
3006 /*
3007 * VFI not supported for interface type 0, so ignore any mailbox
3008 * error (except VFI in use) and continue with the discovery.
3009 */
3010 if (mboxq->u.mb.mbxStatus &&
3011 (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) !=
3012 LPFC_SLI_INTF_IF_TYPE_0) &&
3013 mboxq->u.mb.mbxStatus != MBX_VFI_IN_USE) {
3014 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
3015 "2018 REG_VFI mbxStatus error x%x "
3016 "HBA state x%x\n",
3017 mboxq->u.mb.mbxStatus, vport->port_state);
3018 if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
3019 /* FLOGI failed, use loop map to make discovery list */
3020 lpfc_disc_list_loopmap(vport);
3021 /* Start discovery */
3022 lpfc_disc_start(vport);
3023 goto out_free_mem;
3024 }
3025 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
3026 goto out_free_mem;
3027 }
3028
3029 /* If the VFI is already registered, there is nothing else to do
3030 * Unless this was a VFI update and we are in PT2PT mode, then
3031 * we should drop through to set the port state to ready.
3032 */
3033 if (vport->fc_flag & FC_VFI_REGISTERED)
3034 if (!(phba->sli_rev == LPFC_SLI_REV4 &&
3035 vport->fc_flag & FC_PT2PT))
3036 goto out_free_mem;
3037
3038 /* The VPI is implicitly registered when the VFI is registered */
3039 spin_lock_irq(shost->host_lock);
3040 vport->vpi_state |= LPFC_VPI_REGISTERED;
3041 vport->fc_flag |= FC_VFI_REGISTERED;
3042 vport->fc_flag &= ~FC_VPORT_NEEDS_REG_VPI;
3043 vport->fc_flag &= ~FC_VPORT_NEEDS_INIT_VPI;
3044 spin_unlock_irq(shost->host_lock);
3045
3046 /* In case SLI4 FC loopback test, we are ready */
3047 if ((phba->sli_rev == LPFC_SLI_REV4) &&
3048 (phba->link_flag & LS_LOOPBACK_MODE)) {
3049 phba->link_state = LPFC_HBA_READY;
3050 goto out_free_mem;
3051 }
3052
3053 lpfc_printf_vlog(vport, KERN_INFO, LOG_SLI,
3054 "3313 cmpl reg vfi port_state:%x fc_flag:%x myDid:%x "
3055 "alpacnt:%d LinkState:%x topology:%x\n",
3056 vport->port_state, vport->fc_flag, vport->fc_myDID,
3057 vport->phba->alpa_map[0],
3058 phba->link_state, phba->fc_topology);
3059
3060 if (vport->port_state == LPFC_FABRIC_CFG_LINK) {
3061 /*
3062 * For private loop or for NPort pt2pt,
3063 * just start discovery and we are done.
3064 */
3065 if ((vport->fc_flag & FC_PT2PT) ||
3066 ((phba->fc_topology == LPFC_TOPOLOGY_LOOP) &&
3067 !(vport->fc_flag & FC_PUBLIC_LOOP))) {
3068
3069 /* Use loop map to make discovery list */
3070 lpfc_disc_list_loopmap(vport);
3071 /* Start discovery */
3072 if (vport->fc_flag & FC_PT2PT)
3073 vport->port_state = LPFC_VPORT_READY;
3074 else
3075 lpfc_disc_start(vport);
3076 } else {
3077 lpfc_start_fdiscs(phba);
3078 lpfc_do_scr_ns_plogi(phba, vport);
3079 }
3080 }
3081
3082 out_free_mem:
3083 mempool_free(mboxq, phba->mbox_mem_pool);
3084 if (dmabuf) {
3085 lpfc_mbuf_free(phba, dmabuf->virt, dmabuf->phys);
3086 kfree(dmabuf);
3087 }
3088 return;
3089 }
3090
3091 static void
lpfc_mbx_cmpl_read_sparam(struct lpfc_hba * phba,LPFC_MBOXQ_t * pmb)3092 lpfc_mbx_cmpl_read_sparam(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
3093 {
3094 MAILBOX_t *mb = &pmb->u.mb;
3095 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *)pmb->ctx_buf;
3096 struct lpfc_vport *vport = pmb->vport;
3097 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3098 struct serv_parm *sp = &vport->fc_sparam;
3099 uint32_t ed_tov;
3100
3101 /* Check for error */
3102 if (mb->mbxStatus) {
3103 /* READ_SPARAM mbox error <mbxStatus> state <hba_state> */
3104 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
3105 "0319 READ_SPARAM mbxStatus error x%x "
3106 "hba state x%x>\n",
3107 mb->mbxStatus, vport->port_state);
3108 lpfc_linkdown(phba);
3109 goto out;
3110 }
3111
3112 memcpy((uint8_t *) &vport->fc_sparam, (uint8_t *) mp->virt,
3113 sizeof (struct serv_parm));
3114
3115 ed_tov = be32_to_cpu(sp->cmn.e_d_tov);
3116 if (sp->cmn.edtovResolution) /* E_D_TOV ticks are in nanoseconds */
3117 ed_tov = (ed_tov + 999999) / 1000000;
3118
3119 phba->fc_edtov = ed_tov;
3120 phba->fc_ratov = (2 * ed_tov) / 1000;
3121 if (phba->fc_ratov < FF_DEF_RATOV) {
3122 /* RA_TOV should be atleast 10sec for initial flogi */
3123 phba->fc_ratov = FF_DEF_RATOV;
3124 }
3125
3126 lpfc_update_vport_wwn(vport);
3127 fc_host_port_name(shost) = wwn_to_u64(vport->fc_portname.u.wwn);
3128 if (vport->port_type == LPFC_PHYSICAL_PORT) {
3129 memcpy(&phba->wwnn, &vport->fc_nodename, sizeof(phba->wwnn));
3130 memcpy(&phba->wwpn, &vport->fc_portname, sizeof(phba->wwnn));
3131 }
3132
3133 lpfc_mbuf_free(phba, mp->virt, mp->phys);
3134 kfree(mp);
3135 mempool_free(pmb, phba->mbox_mem_pool);
3136
3137 /* Check if sending the FLOGI is being deferred to after we get
3138 * up to date CSPs from MBX_READ_SPARAM.
3139 */
3140 if (phba->hba_flag & HBA_DEFER_FLOGI) {
3141 lpfc_initial_flogi(vport);
3142 phba->hba_flag &= ~HBA_DEFER_FLOGI;
3143 }
3144 return;
3145
3146 out:
3147 pmb->ctx_buf = NULL;
3148 lpfc_mbuf_free(phba, mp->virt, mp->phys);
3149 kfree(mp);
3150 lpfc_issue_clear_la(phba, vport);
3151 mempool_free(pmb, phba->mbox_mem_pool);
3152 return;
3153 }
3154
3155 static void
lpfc_mbx_process_link_up(struct lpfc_hba * phba,struct lpfc_mbx_read_top * la)3156 lpfc_mbx_process_link_up(struct lpfc_hba *phba, struct lpfc_mbx_read_top *la)
3157 {
3158 struct lpfc_vport *vport = phba->pport;
3159 LPFC_MBOXQ_t *sparam_mbox, *cfglink_mbox = NULL;
3160 struct Scsi_Host *shost;
3161 int i;
3162 struct lpfc_dmabuf *mp;
3163 int rc;
3164 struct fcf_record *fcf_record;
3165 uint32_t fc_flags = 0;
3166 unsigned long iflags;
3167
3168 spin_lock_irqsave(&phba->hbalock, iflags);
3169 phba->fc_linkspeed = bf_get(lpfc_mbx_read_top_link_spd, la);
3170
3171 if (!(phba->hba_flag & HBA_FCOE_MODE)) {
3172 switch (bf_get(lpfc_mbx_read_top_link_spd, la)) {
3173 case LPFC_LINK_SPEED_1GHZ:
3174 case LPFC_LINK_SPEED_2GHZ:
3175 case LPFC_LINK_SPEED_4GHZ:
3176 case LPFC_LINK_SPEED_8GHZ:
3177 case LPFC_LINK_SPEED_10GHZ:
3178 case LPFC_LINK_SPEED_16GHZ:
3179 case LPFC_LINK_SPEED_32GHZ:
3180 case LPFC_LINK_SPEED_64GHZ:
3181 case LPFC_LINK_SPEED_128GHZ:
3182 break;
3183 default:
3184 phba->fc_linkspeed = LPFC_LINK_SPEED_UNKNOWN;
3185 break;
3186 }
3187 }
3188
3189 if (phba->fc_topology &&
3190 phba->fc_topology != bf_get(lpfc_mbx_read_top_topology, la)) {
3191 lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
3192 "3314 Toplogy changed was 0x%x is 0x%x\n",
3193 phba->fc_topology,
3194 bf_get(lpfc_mbx_read_top_topology, la));
3195 phba->fc_topology_changed = 1;
3196 }
3197
3198 phba->fc_topology = bf_get(lpfc_mbx_read_top_topology, la);
3199 phba->link_flag &= ~LS_NPIV_FAB_SUPPORTED;
3200
3201 shost = lpfc_shost_from_vport(vport);
3202 if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
3203 phba->sli3_options &= ~LPFC_SLI3_NPIV_ENABLED;
3204
3205 /* if npiv is enabled and this adapter supports npiv log
3206 * a message that npiv is not supported in this topology
3207 */
3208 if (phba->cfg_enable_npiv && phba->max_vpi)
3209 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
3210 "1309 Link Up Event npiv not supported in loop "
3211 "topology\n");
3212 /* Get Loop Map information */
3213 if (bf_get(lpfc_mbx_read_top_il, la))
3214 fc_flags |= FC_LBIT;
3215
3216 vport->fc_myDID = bf_get(lpfc_mbx_read_top_alpa_granted, la);
3217 i = la->lilpBde64.tus.f.bdeSize;
3218
3219 if (i == 0) {
3220 phba->alpa_map[0] = 0;
3221 } else {
3222 if (vport->cfg_log_verbose & LOG_LINK_EVENT) {
3223 int numalpa, j, k;
3224 union {
3225 uint8_t pamap[16];
3226 struct {
3227 uint32_t wd1;
3228 uint32_t wd2;
3229 uint32_t wd3;
3230 uint32_t wd4;
3231 } pa;
3232 } un;
3233 numalpa = phba->alpa_map[0];
3234 j = 0;
3235 while (j < numalpa) {
3236 memset(un.pamap, 0, 16);
3237 for (k = 1; j < numalpa; k++) {
3238 un.pamap[k - 1] =
3239 phba->alpa_map[j + 1];
3240 j++;
3241 if (k == 16)
3242 break;
3243 }
3244 /* Link Up Event ALPA map */
3245 lpfc_printf_log(phba,
3246 KERN_WARNING,
3247 LOG_LINK_EVENT,
3248 "1304 Link Up Event "
3249 "ALPA map Data: x%x "
3250 "x%x x%x x%x\n",
3251 un.pa.wd1, un.pa.wd2,
3252 un.pa.wd3, un.pa.wd4);
3253 }
3254 }
3255 }
3256 } else {
3257 if (!(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)) {
3258 if (phba->max_vpi && phba->cfg_enable_npiv &&
3259 (phba->sli_rev >= LPFC_SLI_REV3))
3260 phba->sli3_options |= LPFC_SLI3_NPIV_ENABLED;
3261 }
3262 vport->fc_myDID = phba->fc_pref_DID;
3263 fc_flags |= FC_LBIT;
3264 }
3265 spin_unlock_irqrestore(&phba->hbalock, iflags);
3266
3267 if (fc_flags) {
3268 spin_lock_irqsave(shost->host_lock, iflags);
3269 vport->fc_flag |= fc_flags;
3270 spin_unlock_irqrestore(shost->host_lock, iflags);
3271 }
3272
3273 lpfc_linkup(phba);
3274 sparam_mbox = NULL;
3275
3276 sparam_mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
3277 if (!sparam_mbox)
3278 goto out;
3279
3280 rc = lpfc_read_sparam(phba, sparam_mbox, 0);
3281 if (rc) {
3282 mempool_free(sparam_mbox, phba->mbox_mem_pool);
3283 goto out;
3284 }
3285 sparam_mbox->vport = vport;
3286 sparam_mbox->mbox_cmpl = lpfc_mbx_cmpl_read_sparam;
3287 rc = lpfc_sli_issue_mbox(phba, sparam_mbox, MBX_NOWAIT);
3288 if (rc == MBX_NOT_FINISHED) {
3289 mp = (struct lpfc_dmabuf *)sparam_mbox->ctx_buf;
3290 lpfc_mbuf_free(phba, mp->virt, mp->phys);
3291 kfree(mp);
3292 mempool_free(sparam_mbox, phba->mbox_mem_pool);
3293 goto out;
3294 }
3295
3296 if (!(phba->hba_flag & HBA_FCOE_MODE)) {
3297 cfglink_mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
3298 if (!cfglink_mbox)
3299 goto out;
3300 vport->port_state = LPFC_LOCAL_CFG_LINK;
3301 lpfc_config_link(phba, cfglink_mbox);
3302 cfglink_mbox->vport = vport;
3303 cfglink_mbox->mbox_cmpl = lpfc_mbx_cmpl_local_config_link;
3304 rc = lpfc_sli_issue_mbox(phba, cfglink_mbox, MBX_NOWAIT);
3305 if (rc == MBX_NOT_FINISHED) {
3306 mempool_free(cfglink_mbox, phba->mbox_mem_pool);
3307 goto out;
3308 }
3309 } else {
3310 vport->port_state = LPFC_VPORT_UNKNOWN;
3311 /*
3312 * Add the driver's default FCF record at FCF index 0 now. This
3313 * is phase 1 implementation that support FCF index 0 and driver
3314 * defaults.
3315 */
3316 if (!(phba->hba_flag & HBA_FIP_SUPPORT)) {
3317 fcf_record = kzalloc(sizeof(struct fcf_record),
3318 GFP_KERNEL);
3319 if (unlikely(!fcf_record)) {
3320 lpfc_printf_log(phba, KERN_ERR,
3321 LOG_TRACE_EVENT,
3322 "2554 Could not allocate memory for "
3323 "fcf record\n");
3324 rc = -ENODEV;
3325 goto out;
3326 }
3327
3328 lpfc_sli4_build_dflt_fcf_record(phba, fcf_record,
3329 LPFC_FCOE_FCF_DEF_INDEX);
3330 rc = lpfc_sli4_add_fcf_record(phba, fcf_record);
3331 if (unlikely(rc)) {
3332 lpfc_printf_log(phba, KERN_ERR,
3333 LOG_TRACE_EVENT,
3334 "2013 Could not manually add FCF "
3335 "record 0, status %d\n", rc);
3336 rc = -ENODEV;
3337 kfree(fcf_record);
3338 goto out;
3339 }
3340 kfree(fcf_record);
3341 }
3342 /*
3343 * The driver is expected to do FIP/FCF. Call the port
3344 * and get the FCF Table.
3345 */
3346 spin_lock_irqsave(&phba->hbalock, iflags);
3347 if (phba->hba_flag & FCF_TS_INPROG) {
3348 spin_unlock_irqrestore(&phba->hbalock, iflags);
3349 return;
3350 }
3351 /* This is the initial FCF discovery scan */
3352 phba->fcf.fcf_flag |= FCF_INIT_DISC;
3353 spin_unlock_irqrestore(&phba->hbalock, iflags);
3354 lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY,
3355 "2778 Start FCF table scan at linkup\n");
3356 rc = lpfc_sli4_fcf_scan_read_fcf_rec(phba,
3357 LPFC_FCOE_FCF_GET_FIRST);
3358 if (rc) {
3359 spin_lock_irqsave(&phba->hbalock, iflags);
3360 phba->fcf.fcf_flag &= ~FCF_INIT_DISC;
3361 spin_unlock_irqrestore(&phba->hbalock, iflags);
3362 goto out;
3363 }
3364 /* Reset FCF roundrobin bmask for new discovery */
3365 lpfc_sli4_clear_fcf_rr_bmask(phba);
3366 }
3367
3368 /* Prepare for LINK up registrations */
3369 memset(phba->os_host_name, 0, sizeof(phba->os_host_name));
3370 scnprintf(phba->os_host_name, sizeof(phba->os_host_name), "%s",
3371 init_utsname()->nodename);
3372 return;
3373 out:
3374 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
3375 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
3376 "0263 Discovery Mailbox error: state: 0x%x : x%px x%px\n",
3377 vport->port_state, sparam_mbox, cfglink_mbox);
3378 lpfc_issue_clear_la(phba, vport);
3379 return;
3380 }
3381
3382 static void
lpfc_enable_la(struct lpfc_hba * phba)3383 lpfc_enable_la(struct lpfc_hba *phba)
3384 {
3385 uint32_t control;
3386 struct lpfc_sli *psli = &phba->sli;
3387 spin_lock_irq(&phba->hbalock);
3388 psli->sli_flag |= LPFC_PROCESS_LA;
3389 if (phba->sli_rev <= LPFC_SLI_REV3) {
3390 control = readl(phba->HCregaddr);
3391 control |= HC_LAINT_ENA;
3392 writel(control, phba->HCregaddr);
3393 readl(phba->HCregaddr); /* flush */
3394 }
3395 spin_unlock_irq(&phba->hbalock);
3396 }
3397
3398 static void
lpfc_mbx_issue_link_down(struct lpfc_hba * phba)3399 lpfc_mbx_issue_link_down(struct lpfc_hba *phba)
3400 {
3401 lpfc_linkdown(phba);
3402 lpfc_enable_la(phba);
3403 lpfc_unregister_unused_fcf(phba);
3404 /* turn on Link Attention interrupts - no CLEAR_LA needed */
3405 }
3406
3407
3408 /*
3409 * This routine handles processing a READ_TOPOLOGY mailbox
3410 * command upon completion. It is setup in the LPFC_MBOXQ
3411 * as the completion routine when the command is
3412 * handed off to the SLI layer. SLI4 only.
3413 */
3414 void
lpfc_mbx_cmpl_read_topology(struct lpfc_hba * phba,LPFC_MBOXQ_t * pmb)3415 lpfc_mbx_cmpl_read_topology(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
3416 {
3417 struct lpfc_vport *vport = pmb->vport;
3418 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3419 struct lpfc_mbx_read_top *la;
3420 struct lpfc_sli_ring *pring;
3421 MAILBOX_t *mb = &pmb->u.mb;
3422 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *)(pmb->ctx_buf);
3423 uint8_t attn_type;
3424 unsigned long iflags;
3425
3426 /* Unblock ELS traffic */
3427 pring = lpfc_phba_elsring(phba);
3428 if (pring)
3429 pring->flag &= ~LPFC_STOP_IOCB_EVENT;
3430
3431 /* Check for error */
3432 if (mb->mbxStatus) {
3433 lpfc_printf_log(phba, KERN_INFO, LOG_LINK_EVENT,
3434 "1307 READ_LA mbox error x%x state x%x\n",
3435 mb->mbxStatus, vport->port_state);
3436 lpfc_mbx_issue_link_down(phba);
3437 phba->link_state = LPFC_HBA_ERROR;
3438 goto lpfc_mbx_cmpl_read_topology_free_mbuf;
3439 }
3440
3441 la = (struct lpfc_mbx_read_top *) &pmb->u.mb.un.varReadTop;
3442 attn_type = bf_get(lpfc_mbx_read_top_att_type, la);
3443
3444 memcpy(&phba->alpa_map[0], mp->virt, 128);
3445
3446 spin_lock_irqsave(shost->host_lock, iflags);
3447 if (bf_get(lpfc_mbx_read_top_pb, la))
3448 vport->fc_flag |= FC_BYPASSED_MODE;
3449 else
3450 vport->fc_flag &= ~FC_BYPASSED_MODE;
3451 spin_unlock_irqrestore(shost->host_lock, iflags);
3452
3453 if (phba->fc_eventTag <= la->eventTag) {
3454 phba->fc_stat.LinkMultiEvent++;
3455 if (attn_type == LPFC_ATT_LINK_UP)
3456 if (phba->fc_eventTag != 0)
3457 lpfc_linkdown(phba);
3458 }
3459
3460 phba->fc_eventTag = la->eventTag;
3461 if (phba->sli_rev < LPFC_SLI_REV4) {
3462 spin_lock_irqsave(&phba->hbalock, iflags);
3463 if (bf_get(lpfc_mbx_read_top_mm, la))
3464 phba->sli.sli_flag |= LPFC_MENLO_MAINT;
3465 else
3466 phba->sli.sli_flag &= ~LPFC_MENLO_MAINT;
3467 spin_unlock_irqrestore(&phba->hbalock, iflags);
3468 }
3469
3470 phba->link_events++;
3471 if ((attn_type == LPFC_ATT_LINK_UP) &&
3472 !(phba->sli.sli_flag & LPFC_MENLO_MAINT)) {
3473 phba->fc_stat.LinkUp++;
3474 if (phba->link_flag & LS_LOOPBACK_MODE) {
3475 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
3476 "1306 Link Up Event in loop back mode "
3477 "x%x received Data: x%x x%x x%x x%x\n",
3478 la->eventTag, phba->fc_eventTag,
3479 bf_get(lpfc_mbx_read_top_alpa_granted,
3480 la),
3481 bf_get(lpfc_mbx_read_top_link_spd, la),
3482 phba->alpa_map[0]);
3483 } else {
3484 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
3485 "1303 Link Up Event x%x received "
3486 "Data: x%x x%x x%x x%x x%x x%x %d\n",
3487 la->eventTag, phba->fc_eventTag,
3488 bf_get(lpfc_mbx_read_top_alpa_granted,
3489 la),
3490 bf_get(lpfc_mbx_read_top_link_spd, la),
3491 phba->alpa_map[0],
3492 bf_get(lpfc_mbx_read_top_mm, la),
3493 bf_get(lpfc_mbx_read_top_fa, la),
3494 phba->wait_4_mlo_maint_flg);
3495 }
3496 lpfc_mbx_process_link_up(phba, la);
3497 } else if (attn_type == LPFC_ATT_LINK_DOWN ||
3498 attn_type == LPFC_ATT_UNEXP_WWPN) {
3499 phba->fc_stat.LinkDown++;
3500 if (phba->link_flag & LS_LOOPBACK_MODE)
3501 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
3502 "1308 Link Down Event in loop back mode "
3503 "x%x received "
3504 "Data: x%x x%x x%x\n",
3505 la->eventTag, phba->fc_eventTag,
3506 phba->pport->port_state, vport->fc_flag);
3507 else if (attn_type == LPFC_ATT_UNEXP_WWPN)
3508 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
3509 "1313 Link Down Unexpected FA WWPN Event x%x "
3510 "received Data: x%x x%x x%x x%x x%x\n",
3511 la->eventTag, phba->fc_eventTag,
3512 phba->pport->port_state, vport->fc_flag,
3513 bf_get(lpfc_mbx_read_top_mm, la),
3514 bf_get(lpfc_mbx_read_top_fa, la));
3515 else
3516 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
3517 "1305 Link Down Event x%x received "
3518 "Data: x%x x%x x%x x%x x%x\n",
3519 la->eventTag, phba->fc_eventTag,
3520 phba->pport->port_state, vport->fc_flag,
3521 bf_get(lpfc_mbx_read_top_mm, la),
3522 bf_get(lpfc_mbx_read_top_fa, la));
3523 lpfc_mbx_issue_link_down(phba);
3524 }
3525 if (phba->sli.sli_flag & LPFC_MENLO_MAINT &&
3526 attn_type == LPFC_ATT_LINK_UP) {
3527 if (phba->link_state != LPFC_LINK_DOWN) {
3528 phba->fc_stat.LinkDown++;
3529 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
3530 "1312 Link Down Event x%x received "
3531 "Data: x%x x%x x%x\n",
3532 la->eventTag, phba->fc_eventTag,
3533 phba->pport->port_state, vport->fc_flag);
3534 lpfc_mbx_issue_link_down(phba);
3535 } else
3536 lpfc_enable_la(phba);
3537
3538 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
3539 "1310 Menlo Maint Mode Link up Event x%x rcvd "
3540 "Data: x%x x%x x%x\n",
3541 la->eventTag, phba->fc_eventTag,
3542 phba->pport->port_state, vport->fc_flag);
3543 /*
3544 * The cmnd that triggered this will be waiting for this
3545 * signal.
3546 */
3547 /* WAKEUP for MENLO_SET_MODE or MENLO_RESET command. */
3548 if (phba->wait_4_mlo_maint_flg) {
3549 phba->wait_4_mlo_maint_flg = 0;
3550 wake_up_interruptible(&phba->wait_4_mlo_m_q);
3551 }
3552 }
3553
3554 if ((phba->sli_rev < LPFC_SLI_REV4) &&
3555 bf_get(lpfc_mbx_read_top_fa, la)) {
3556 if (phba->sli.sli_flag & LPFC_MENLO_MAINT)
3557 lpfc_issue_clear_la(phba, vport);
3558 lpfc_printf_log(phba, KERN_INFO, LOG_LINK_EVENT,
3559 "1311 fa %d\n",
3560 bf_get(lpfc_mbx_read_top_fa, la));
3561 }
3562
3563 lpfc_mbx_cmpl_read_topology_free_mbuf:
3564 lpfc_mbuf_free(phba, mp->virt, mp->phys);
3565 kfree(mp);
3566 mempool_free(pmb, phba->mbox_mem_pool);
3567 return;
3568 }
3569
3570 /*
3571 * This routine handles processing a REG_LOGIN mailbox
3572 * command upon completion. It is setup in the LPFC_MBOXQ
3573 * as the completion routine when the command is
3574 * handed off to the SLI layer.
3575 */
3576 void
lpfc_mbx_cmpl_reg_login(struct lpfc_hba * phba,LPFC_MBOXQ_t * pmb)3577 lpfc_mbx_cmpl_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
3578 {
3579 struct lpfc_vport *vport = pmb->vport;
3580 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *)(pmb->ctx_buf);
3581 struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *)pmb->ctx_ndlp;
3582 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3583
3584 pmb->ctx_buf = NULL;
3585 pmb->ctx_ndlp = NULL;
3586
3587 lpfc_printf_vlog(vport, KERN_INFO, LOG_SLI,
3588 "0002 rpi:%x DID:%x flg:%x %d map:%x x%px\n",
3589 ndlp->nlp_rpi, ndlp->nlp_DID, ndlp->nlp_flag,
3590 kref_read(&ndlp->kref),
3591 ndlp->nlp_usg_map, ndlp);
3592 if (ndlp->nlp_flag & NLP_REG_LOGIN_SEND)
3593 ndlp->nlp_flag &= ~NLP_REG_LOGIN_SEND;
3594
3595 if (ndlp->nlp_flag & NLP_IGNR_REG_CMPL ||
3596 ndlp->nlp_state != NLP_STE_REG_LOGIN_ISSUE) {
3597 /* We rcvd a rscn after issuing this
3598 * mbox reg login, we may have cycled
3599 * back through the state and be
3600 * back at reg login state so this
3601 * mbox needs to be ignored becase
3602 * there is another reg login in
3603 * process.
3604 */
3605 spin_lock_irq(shost->host_lock);
3606 ndlp->nlp_flag &= ~NLP_IGNR_REG_CMPL;
3607 spin_unlock_irq(shost->host_lock);
3608
3609 /*
3610 * We cannot leave the RPI registered because
3611 * if we go thru discovery again for this ndlp
3612 * a subsequent REG_RPI will fail.
3613 */
3614 ndlp->nlp_flag |= NLP_RPI_REGISTERED;
3615 lpfc_unreg_rpi(vport, ndlp);
3616 }
3617
3618 /* Call state machine */
3619 lpfc_disc_state_machine(vport, ndlp, pmb, NLP_EVT_CMPL_REG_LOGIN);
3620
3621 lpfc_mbuf_free(phba, mp->virt, mp->phys);
3622 kfree(mp);
3623 mempool_free(pmb, phba->mbox_mem_pool);
3624 /* decrement the node reference count held for this callback
3625 * function.
3626 */
3627 lpfc_nlp_put(ndlp);
3628
3629 return;
3630 }
3631
3632 static void
lpfc_mbx_cmpl_unreg_vpi(struct lpfc_hba * phba,LPFC_MBOXQ_t * pmb)3633 lpfc_mbx_cmpl_unreg_vpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
3634 {
3635 MAILBOX_t *mb = &pmb->u.mb;
3636 struct lpfc_vport *vport = pmb->vport;
3637 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3638
3639 switch (mb->mbxStatus) {
3640 case 0x0011:
3641 case 0x0020:
3642 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
3643 "0911 cmpl_unreg_vpi, mb status = 0x%x\n",
3644 mb->mbxStatus);
3645 break;
3646 /* If VPI is busy, reset the HBA */
3647 case 0x9700:
3648 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
3649 "2798 Unreg_vpi failed vpi 0x%x, mb status = 0x%x\n",
3650 vport->vpi, mb->mbxStatus);
3651 if (!(phba->pport->load_flag & FC_UNLOADING))
3652 lpfc_workq_post_event(phba, NULL, NULL,
3653 LPFC_EVT_RESET_HBA);
3654 }
3655 spin_lock_irq(shost->host_lock);
3656 vport->vpi_state &= ~LPFC_VPI_REGISTERED;
3657 vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
3658 spin_unlock_irq(shost->host_lock);
3659 vport->unreg_vpi_cmpl = VPORT_OK;
3660 mempool_free(pmb, phba->mbox_mem_pool);
3661 lpfc_cleanup_vports_rrqs(vport, NULL);
3662 /*
3663 * This shost reference might have been taken at the beginning of
3664 * lpfc_vport_delete()
3665 */
3666 if ((vport->load_flag & FC_UNLOADING) && (vport != phba->pport))
3667 scsi_host_put(shost);
3668 }
3669
3670 int
lpfc_mbx_unreg_vpi(struct lpfc_vport * vport)3671 lpfc_mbx_unreg_vpi(struct lpfc_vport *vport)
3672 {
3673 struct lpfc_hba *phba = vport->phba;
3674 LPFC_MBOXQ_t *mbox;
3675 int rc;
3676
3677 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
3678 if (!mbox)
3679 return 1;
3680
3681 lpfc_unreg_vpi(phba, vport->vpi, mbox);
3682 mbox->vport = vport;
3683 mbox->mbox_cmpl = lpfc_mbx_cmpl_unreg_vpi;
3684 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
3685 if (rc == MBX_NOT_FINISHED) {
3686 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
3687 "1800 Could not issue unreg_vpi\n");
3688 mempool_free(mbox, phba->mbox_mem_pool);
3689 vport->unreg_vpi_cmpl = VPORT_ERROR;
3690 return rc;
3691 }
3692 return 0;
3693 }
3694
3695 static void
lpfc_mbx_cmpl_reg_vpi(struct lpfc_hba * phba,LPFC_MBOXQ_t * pmb)3696 lpfc_mbx_cmpl_reg_vpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
3697 {
3698 struct lpfc_vport *vport = pmb->vport;
3699 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3700 MAILBOX_t *mb = &pmb->u.mb;
3701
3702 switch (mb->mbxStatus) {
3703 case 0x0011:
3704 case 0x9601:
3705 case 0x9602:
3706 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
3707 "0912 cmpl_reg_vpi, mb status = 0x%x\n",
3708 mb->mbxStatus);
3709 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
3710 spin_lock_irq(shost->host_lock);
3711 vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP);
3712 spin_unlock_irq(shost->host_lock);
3713 vport->fc_myDID = 0;
3714
3715 if ((vport->cfg_enable_fc4_type == LPFC_ENABLE_BOTH) ||
3716 (vport->cfg_enable_fc4_type == LPFC_ENABLE_NVME)) {
3717 if (phba->nvmet_support)
3718 lpfc_nvmet_update_targetport(phba);
3719 else
3720 lpfc_nvme_update_localport(vport);
3721 }
3722 goto out;
3723 }
3724
3725 spin_lock_irq(shost->host_lock);
3726 vport->vpi_state |= LPFC_VPI_REGISTERED;
3727 vport->fc_flag &= ~FC_VPORT_NEEDS_REG_VPI;
3728 spin_unlock_irq(shost->host_lock);
3729 vport->num_disc_nodes = 0;
3730 /* go thru NPR list and issue ELS PLOGIs */
3731 if (vport->fc_npr_cnt)
3732 lpfc_els_disc_plogi(vport);
3733
3734 if (!vport->num_disc_nodes) {
3735 spin_lock_irq(shost->host_lock);
3736 vport->fc_flag &= ~FC_NDISC_ACTIVE;
3737 spin_unlock_irq(shost->host_lock);
3738 lpfc_can_disctmo(vport);
3739 }
3740 vport->port_state = LPFC_VPORT_READY;
3741
3742 out:
3743 mempool_free(pmb, phba->mbox_mem_pool);
3744 return;
3745 }
3746
3747 /**
3748 * lpfc_create_static_vport - Read HBA config region to create static vports.
3749 * @phba: pointer to lpfc hba data structure.
3750 *
3751 * This routine issue a DUMP mailbox command for config region 22 to get
3752 * the list of static vports to be created. The function create vports
3753 * based on the information returned from the HBA.
3754 **/
3755 void
lpfc_create_static_vport(struct lpfc_hba * phba)3756 lpfc_create_static_vport(struct lpfc_hba *phba)
3757 {
3758 LPFC_MBOXQ_t *pmb = NULL;
3759 MAILBOX_t *mb;
3760 struct static_vport_info *vport_info;
3761 int mbx_wait_rc = 0, i;
3762 struct fc_vport_identifiers vport_id;
3763 struct fc_vport *new_fc_vport;
3764 struct Scsi_Host *shost;
3765 struct lpfc_vport *vport;
3766 uint16_t offset = 0;
3767 uint8_t *vport_buff;
3768 struct lpfc_dmabuf *mp;
3769 uint32_t byte_count = 0;
3770
3771 pmb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
3772 if (!pmb) {
3773 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
3774 "0542 lpfc_create_static_vport failed to"
3775 " allocate mailbox memory\n");
3776 return;
3777 }
3778 memset(pmb, 0, sizeof(LPFC_MBOXQ_t));
3779 mb = &pmb->u.mb;
3780
3781 vport_info = kzalloc(sizeof(struct static_vport_info), GFP_KERNEL);
3782 if (!vport_info) {
3783 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
3784 "0543 lpfc_create_static_vport failed to"
3785 " allocate vport_info\n");
3786 mempool_free(pmb, phba->mbox_mem_pool);
3787 return;
3788 }
3789
3790 vport_buff = (uint8_t *) vport_info;
3791 do {
3792 /* free dma buffer from previous round */
3793 if (pmb->ctx_buf) {
3794 mp = (struct lpfc_dmabuf *)pmb->ctx_buf;
3795 lpfc_mbuf_free(phba, mp->virt, mp->phys);
3796 kfree(mp);
3797 }
3798 if (lpfc_dump_static_vport(phba, pmb, offset))
3799 goto out;
3800
3801 pmb->vport = phba->pport;
3802 mbx_wait_rc = lpfc_sli_issue_mbox_wait(phba, pmb,
3803 LPFC_MBOX_TMO);
3804
3805 if ((mbx_wait_rc != MBX_SUCCESS) || mb->mbxStatus) {
3806 lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
3807 "0544 lpfc_create_static_vport failed to"
3808 " issue dump mailbox command ret 0x%x "
3809 "status 0x%x\n",
3810 mbx_wait_rc, mb->mbxStatus);
3811 goto out;
3812 }
3813
3814 if (phba->sli_rev == LPFC_SLI_REV4) {
3815 byte_count = pmb->u.mqe.un.mb_words[5];
3816 mp = (struct lpfc_dmabuf *)pmb->ctx_buf;
3817 if (byte_count > sizeof(struct static_vport_info) -
3818 offset)
3819 byte_count = sizeof(struct static_vport_info)
3820 - offset;
3821 memcpy(vport_buff + offset, mp->virt, byte_count);
3822 offset += byte_count;
3823 } else {
3824 if (mb->un.varDmp.word_cnt >
3825 sizeof(struct static_vport_info) - offset)
3826 mb->un.varDmp.word_cnt =
3827 sizeof(struct static_vport_info)
3828 - offset;
3829 byte_count = mb->un.varDmp.word_cnt;
3830 lpfc_sli_pcimem_bcopy(((uint8_t *)mb) + DMP_RSP_OFFSET,
3831 vport_buff + offset,
3832 byte_count);
3833
3834 offset += byte_count;
3835 }
3836
3837 } while (byte_count &&
3838 offset < sizeof(struct static_vport_info));
3839
3840
3841 if ((le32_to_cpu(vport_info->signature) != VPORT_INFO_SIG) ||
3842 ((le32_to_cpu(vport_info->rev) & VPORT_INFO_REV_MASK)
3843 != VPORT_INFO_REV)) {
3844 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
3845 "0545 lpfc_create_static_vport bad"
3846 " information header 0x%x 0x%x\n",
3847 le32_to_cpu(vport_info->signature),
3848 le32_to_cpu(vport_info->rev) &
3849 VPORT_INFO_REV_MASK);
3850
3851 goto out;
3852 }
3853
3854 shost = lpfc_shost_from_vport(phba->pport);
3855
3856 for (i = 0; i < MAX_STATIC_VPORT_COUNT; i++) {
3857 memset(&vport_id, 0, sizeof(vport_id));
3858 vport_id.port_name = wwn_to_u64(vport_info->vport_list[i].wwpn);
3859 vport_id.node_name = wwn_to_u64(vport_info->vport_list[i].wwnn);
3860 if (!vport_id.port_name || !vport_id.node_name)
3861 continue;
3862
3863 vport_id.roles = FC_PORT_ROLE_FCP_INITIATOR;
3864 vport_id.vport_type = FC_PORTTYPE_NPIV;
3865 vport_id.disable = false;
3866 new_fc_vport = fc_vport_create(shost, 0, &vport_id);
3867
3868 if (!new_fc_vport) {
3869 lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
3870 "0546 lpfc_create_static_vport failed to"
3871 " create vport\n");
3872 continue;
3873 }
3874
3875 vport = *(struct lpfc_vport **)new_fc_vport->dd_data;
3876 vport->vport_flag |= STATIC_VPORT;
3877 }
3878
3879 out:
3880 kfree(vport_info);
3881 if (mbx_wait_rc != MBX_TIMEOUT) {
3882 if (pmb->ctx_buf) {
3883 mp = (struct lpfc_dmabuf *)pmb->ctx_buf;
3884 lpfc_mbuf_free(phba, mp->virt, mp->phys);
3885 kfree(mp);
3886 }
3887 mempool_free(pmb, phba->mbox_mem_pool);
3888 }
3889
3890 return;
3891 }
3892
3893 /*
3894 * This routine handles processing a Fabric REG_LOGIN mailbox
3895 * command upon completion. It is setup in the LPFC_MBOXQ
3896 * as the completion routine when the command is
3897 * handed off to the SLI layer.
3898 */
3899 void
lpfc_mbx_cmpl_fabric_reg_login(struct lpfc_hba * phba,LPFC_MBOXQ_t * pmb)3900 lpfc_mbx_cmpl_fabric_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
3901 {
3902 struct lpfc_vport *vport = pmb->vport;
3903 MAILBOX_t *mb = &pmb->u.mb;
3904 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *)(pmb->ctx_buf);
3905 struct lpfc_nodelist *ndlp;
3906 struct Scsi_Host *shost;
3907
3908 ndlp = (struct lpfc_nodelist *)pmb->ctx_ndlp;
3909 pmb->ctx_ndlp = NULL;
3910 pmb->ctx_buf = NULL;
3911
3912 if (mb->mbxStatus) {
3913 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
3914 "0258 Register Fabric login error: 0x%x\n",
3915 mb->mbxStatus);
3916 lpfc_mbuf_free(phba, mp->virt, mp->phys);
3917 kfree(mp);
3918 mempool_free(pmb, phba->mbox_mem_pool);
3919
3920 if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
3921 /* FLOGI failed, use loop map to make discovery list */
3922 lpfc_disc_list_loopmap(vport);
3923
3924 /* Start discovery */
3925 lpfc_disc_start(vport);
3926 /* Decrement the reference count to ndlp after the
3927 * reference to the ndlp are done.
3928 */
3929 lpfc_nlp_put(ndlp);
3930 return;
3931 }
3932
3933 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
3934 /* Decrement the reference count to ndlp after the reference
3935 * to the ndlp are done.
3936 */
3937 lpfc_nlp_put(ndlp);
3938 return;
3939 }
3940
3941 if (phba->sli_rev < LPFC_SLI_REV4)
3942 ndlp->nlp_rpi = mb->un.varWords[0];
3943 ndlp->nlp_flag |= NLP_RPI_REGISTERED;
3944 ndlp->nlp_type |= NLP_FABRIC;
3945 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
3946
3947 if (vport->port_state == LPFC_FABRIC_CFG_LINK) {
3948 /* when physical port receive logo donot start
3949 * vport discovery */
3950 if (!(vport->fc_flag & FC_LOGO_RCVD_DID_CHNG))
3951 lpfc_start_fdiscs(phba);
3952 else {
3953 shost = lpfc_shost_from_vport(vport);
3954 spin_lock_irq(shost->host_lock);
3955 vport->fc_flag &= ~FC_LOGO_RCVD_DID_CHNG ;
3956 spin_unlock_irq(shost->host_lock);
3957 }
3958 lpfc_do_scr_ns_plogi(phba, vport);
3959 }
3960
3961 lpfc_mbuf_free(phba, mp->virt, mp->phys);
3962 kfree(mp);
3963 mempool_free(pmb, phba->mbox_mem_pool);
3964
3965 /* Drop the reference count from the mbox at the end after
3966 * all the current reference to the ndlp have been done.
3967 */
3968 lpfc_nlp_put(ndlp);
3969 return;
3970 }
3971
3972 /*
3973 * This routine will issue a GID_FT for each FC4 Type supported
3974 * by the driver. ALL GID_FTs must complete before discovery is started.
3975 */
3976 int
lpfc_issue_gidft(struct lpfc_vport * vport)3977 lpfc_issue_gidft(struct lpfc_vport *vport)
3978 {
3979 /* Good status, issue CT Request to NameServer */
3980 if ((vport->cfg_enable_fc4_type == LPFC_ENABLE_BOTH) ||
3981 (vport->cfg_enable_fc4_type == LPFC_ENABLE_FCP)) {
3982 if (lpfc_ns_cmd(vport, SLI_CTNS_GID_FT, 0, SLI_CTPT_FCP)) {
3983 /* Cannot issue NameServer FCP Query, so finish up
3984 * discovery
3985 */
3986 lpfc_printf_vlog(vport, KERN_ERR,
3987 LOG_TRACE_EVENT,
3988 "0604 %s FC TYPE %x %s\n",
3989 "Failed to issue GID_FT to ",
3990 FC_TYPE_FCP,
3991 "Finishing discovery.");
3992 return 0;
3993 }
3994 vport->gidft_inp++;
3995 }
3996
3997 if ((vport->cfg_enable_fc4_type == LPFC_ENABLE_BOTH) ||
3998 (vport->cfg_enable_fc4_type == LPFC_ENABLE_NVME)) {
3999 if (lpfc_ns_cmd(vport, SLI_CTNS_GID_FT, 0, SLI_CTPT_NVME)) {
4000 /* Cannot issue NameServer NVME Query, so finish up
4001 * discovery
4002 */
4003 lpfc_printf_vlog(vport, KERN_ERR,
4004 LOG_TRACE_EVENT,
4005 "0605 %s FC_TYPE %x %s %d\n",
4006 "Failed to issue GID_FT to ",
4007 FC_TYPE_NVME,
4008 "Finishing discovery: gidftinp ",
4009 vport->gidft_inp);
4010 if (vport->gidft_inp == 0)
4011 return 0;
4012 } else
4013 vport->gidft_inp++;
4014 }
4015 return vport->gidft_inp;
4016 }
4017
4018 /**
4019 * lpfc_issue_gidpt - issue a GID_PT for all N_Ports
4020 * @vport: The virtual port for which this call is being executed.
4021 *
4022 * This routine will issue a GID_PT to get a list of all N_Ports
4023 *
4024 * Return value :
4025 * 0 - Failure to issue a GID_PT
4026 * 1 - GID_PT issued
4027 **/
4028 int
lpfc_issue_gidpt(struct lpfc_vport * vport)4029 lpfc_issue_gidpt(struct lpfc_vport *vport)
4030 {
4031 /* Good status, issue CT Request to NameServer */
4032 if (lpfc_ns_cmd(vport, SLI_CTNS_GID_PT, 0, GID_PT_N_PORT)) {
4033 /* Cannot issue NameServer FCP Query, so finish up
4034 * discovery
4035 */
4036 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
4037 "0606 %s Port TYPE %x %s\n",
4038 "Failed to issue GID_PT to ",
4039 GID_PT_N_PORT,
4040 "Finishing discovery.");
4041 return 0;
4042 }
4043 vport->gidft_inp++;
4044 return 1;
4045 }
4046
4047 /*
4048 * This routine handles processing a NameServer REG_LOGIN mailbox
4049 * command upon completion. It is setup in the LPFC_MBOXQ
4050 * as the completion routine when the command is
4051 * handed off to the SLI layer.
4052 */
4053 void
lpfc_mbx_cmpl_ns_reg_login(struct lpfc_hba * phba,LPFC_MBOXQ_t * pmb)4054 lpfc_mbx_cmpl_ns_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
4055 {
4056 MAILBOX_t *mb = &pmb->u.mb;
4057 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *)(pmb->ctx_buf);
4058 struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *)pmb->ctx_ndlp;
4059 struct lpfc_vport *vport = pmb->vport;
4060
4061 pmb->ctx_buf = NULL;
4062 pmb->ctx_ndlp = NULL;
4063 vport->gidft_inp = 0;
4064
4065 if (mb->mbxStatus) {
4066 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
4067 "0260 Register NameServer error: 0x%x\n",
4068 mb->mbxStatus);
4069
4070 out:
4071 /* decrement the node reference count held for this
4072 * callback function.
4073 */
4074 lpfc_nlp_put(ndlp);
4075 lpfc_mbuf_free(phba, mp->virt, mp->phys);
4076 kfree(mp);
4077 mempool_free(pmb, phba->mbox_mem_pool);
4078
4079 /* If no other thread is using the ndlp, free it */
4080 lpfc_nlp_not_used(ndlp);
4081
4082 if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
4083 /*
4084 * RegLogin failed, use loop map to make discovery
4085 * list
4086 */
4087 lpfc_disc_list_loopmap(vport);
4088
4089 /* Start discovery */
4090 lpfc_disc_start(vport);
4091 return;
4092 }
4093 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
4094 return;
4095 }
4096
4097 if (phba->sli_rev < LPFC_SLI_REV4)
4098 ndlp->nlp_rpi = mb->un.varWords[0];
4099 ndlp->nlp_flag |= NLP_RPI_REGISTERED;
4100 ndlp->nlp_type |= NLP_FABRIC;
4101 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
4102 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE | LOG_DISCOVERY,
4103 "0003 rpi:%x DID:%x flg:%x %d map%x x%px\n",
4104 ndlp->nlp_rpi, ndlp->nlp_DID, ndlp->nlp_flag,
4105 kref_read(&ndlp->kref),
4106 ndlp->nlp_usg_map, ndlp);
4107
4108 if (vport->port_state < LPFC_VPORT_READY) {
4109 /* Link up discovery requires Fabric registration. */
4110 lpfc_ns_cmd(vport, SLI_CTNS_RNN_ID, 0, 0);
4111 lpfc_ns_cmd(vport, SLI_CTNS_RSNN_NN, 0, 0);
4112 lpfc_ns_cmd(vport, SLI_CTNS_RSPN_ID, 0, 0);
4113 lpfc_ns_cmd(vport, SLI_CTNS_RFT_ID, 0, 0);
4114
4115 if ((vport->cfg_enable_fc4_type == LPFC_ENABLE_BOTH) ||
4116 (vport->cfg_enable_fc4_type == LPFC_ENABLE_FCP))
4117 lpfc_ns_cmd(vport, SLI_CTNS_RFF_ID, 0, FC_TYPE_FCP);
4118
4119 if ((vport->cfg_enable_fc4_type == LPFC_ENABLE_BOTH) ||
4120 (vport->cfg_enable_fc4_type == LPFC_ENABLE_NVME))
4121 lpfc_ns_cmd(vport, SLI_CTNS_RFF_ID, 0,
4122 FC_TYPE_NVME);
4123
4124 /* Issue SCR just before NameServer GID_FT Query */
4125 lpfc_issue_els_scr(vport, 0);
4126
4127 lpfc_issue_els_rdf(vport, 0);
4128 }
4129
4130 vport->fc_ns_retry = 0;
4131 if (lpfc_issue_gidft(vport) == 0)
4132 goto out;
4133
4134 /*
4135 * At this point in time we may need to wait for multiple
4136 * SLI_CTNS_GID_FT CT commands to complete before we start discovery.
4137 *
4138 * decrement the node reference count held for this
4139 * callback function.
4140 */
4141 lpfc_nlp_put(ndlp);
4142 lpfc_mbuf_free(phba, mp->virt, mp->phys);
4143 kfree(mp);
4144 mempool_free(pmb, phba->mbox_mem_pool);
4145
4146 return;
4147 }
4148
4149 static void
lpfc_register_remote_port(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp)4150 lpfc_register_remote_port(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
4151 {
4152 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4153 struct fc_rport *rport;
4154 struct lpfc_rport_data *rdata;
4155 struct fc_rport_identifiers rport_ids;
4156 struct lpfc_hba *phba = vport->phba;
4157
4158 if (vport->cfg_enable_fc4_type == LPFC_ENABLE_NVME)
4159 return;
4160
4161 /* Remote port has reappeared. Re-register w/ FC transport */
4162 rport_ids.node_name = wwn_to_u64(ndlp->nlp_nodename.u.wwn);
4163 rport_ids.port_name = wwn_to_u64(ndlp->nlp_portname.u.wwn);
4164 rport_ids.port_id = ndlp->nlp_DID;
4165 rport_ids.roles = FC_RPORT_ROLE_UNKNOWN;
4166
4167 /*
4168 * We leave our node pointer in rport->dd_data when we unregister a
4169 * FCP target port. But fc_remote_port_add zeros the space to which
4170 * rport->dd_data points. So, if we're reusing a previously
4171 * registered port, drop the reference that we took the last time we
4172 * registered the port.
4173 */
4174 rport = ndlp->rport;
4175 if (rport) {
4176 rdata = rport->dd_data;
4177 /* break the link before dropping the ref */
4178 ndlp->rport = NULL;
4179 if (rdata) {
4180 if (rdata->pnode == ndlp)
4181 lpfc_nlp_put(ndlp);
4182 rdata->pnode = NULL;
4183 }
4184 /* drop reference for earlier registeration */
4185 put_device(&rport->dev);
4186 }
4187
4188 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
4189 "rport add: did:x%x flg:x%x type x%x",
4190 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type);
4191
4192 /* Don't add the remote port if unloading. */
4193 if (vport->load_flag & FC_UNLOADING)
4194 return;
4195
4196 ndlp->rport = rport = fc_remote_port_add(shost, 0, &rport_ids);
4197 if (!rport || !get_device(&rport->dev)) {
4198 dev_printk(KERN_WARNING, &phba->pcidev->dev,
4199 "Warning: fc_remote_port_add failed\n");
4200 return;
4201 }
4202
4203 /* initialize static port data */
4204 rport->maxframe_size = ndlp->nlp_maxframe;
4205 rport->supported_classes = ndlp->nlp_class_sup;
4206 rdata = rport->dd_data;
4207 rdata->pnode = lpfc_nlp_get(ndlp);
4208
4209 if (ndlp->nlp_type & NLP_FCP_TARGET)
4210 rport_ids.roles |= FC_PORT_ROLE_FCP_TARGET;
4211 if (ndlp->nlp_type & NLP_FCP_INITIATOR)
4212 rport_ids.roles |= FC_PORT_ROLE_FCP_INITIATOR;
4213 if (ndlp->nlp_type & NLP_NVME_INITIATOR)
4214 rport_ids.roles |= FC_PORT_ROLE_NVME_INITIATOR;
4215 if (ndlp->nlp_type & NLP_NVME_TARGET)
4216 rport_ids.roles |= FC_PORT_ROLE_NVME_TARGET;
4217 if (ndlp->nlp_type & NLP_NVME_DISCOVERY)
4218 rport_ids.roles |= FC_PORT_ROLE_NVME_DISCOVERY;
4219
4220 if (rport_ids.roles != FC_RPORT_ROLE_UNKNOWN)
4221 fc_remote_port_rolechg(rport, rport_ids.roles);
4222
4223 lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_NODE,
4224 "3183 rport register x%06x, rport x%px role x%x\n",
4225 ndlp->nlp_DID, rport, rport_ids.roles);
4226
4227 if ((rport->scsi_target_id != -1) &&
4228 (rport->scsi_target_id < LPFC_MAX_TARGET)) {
4229 ndlp->nlp_sid = rport->scsi_target_id;
4230 }
4231 return;
4232 }
4233
4234 static void
lpfc_unregister_remote_port(struct lpfc_nodelist * ndlp)4235 lpfc_unregister_remote_port(struct lpfc_nodelist *ndlp)
4236 {
4237 struct fc_rport *rport = ndlp->rport;
4238 struct lpfc_vport *vport = ndlp->vport;
4239
4240 if (vport->cfg_enable_fc4_type == LPFC_ENABLE_NVME)
4241 return;
4242
4243 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
4244 "rport delete: did:x%x flg:x%x type x%x",
4245 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type);
4246
4247 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
4248 "3184 rport unregister x%06x, rport x%px\n",
4249 ndlp->nlp_DID, rport);
4250
4251 fc_remote_port_delete(rport);
4252
4253 return;
4254 }
4255
4256 static void
lpfc_nlp_counters(struct lpfc_vport * vport,int state,int count)4257 lpfc_nlp_counters(struct lpfc_vport *vport, int state, int count)
4258 {
4259 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4260 unsigned long iflags;
4261
4262 spin_lock_irqsave(shost->host_lock, iflags);
4263 switch (state) {
4264 case NLP_STE_UNUSED_NODE:
4265 vport->fc_unused_cnt += count;
4266 break;
4267 case NLP_STE_PLOGI_ISSUE:
4268 vport->fc_plogi_cnt += count;
4269 break;
4270 case NLP_STE_ADISC_ISSUE:
4271 vport->fc_adisc_cnt += count;
4272 break;
4273 case NLP_STE_REG_LOGIN_ISSUE:
4274 vport->fc_reglogin_cnt += count;
4275 break;
4276 case NLP_STE_PRLI_ISSUE:
4277 vport->fc_prli_cnt += count;
4278 break;
4279 case NLP_STE_UNMAPPED_NODE:
4280 vport->fc_unmap_cnt += count;
4281 break;
4282 case NLP_STE_MAPPED_NODE:
4283 vport->fc_map_cnt += count;
4284 break;
4285 case NLP_STE_NPR_NODE:
4286 if (vport->fc_npr_cnt == 0 && count == -1)
4287 vport->fc_npr_cnt = 0;
4288 else
4289 vport->fc_npr_cnt += count;
4290 break;
4291 }
4292 spin_unlock_irqrestore(shost->host_lock, iflags);
4293 }
4294
4295 static void
lpfc_nlp_state_cleanup(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,int old_state,int new_state)4296 lpfc_nlp_state_cleanup(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
4297 int old_state, int new_state)
4298 {
4299 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4300
4301 if (new_state == NLP_STE_UNMAPPED_NODE) {
4302 ndlp->nlp_flag &= ~NLP_NODEV_REMOVE;
4303 ndlp->nlp_type |= NLP_FC_NODE;
4304 }
4305 if (new_state == NLP_STE_MAPPED_NODE)
4306 ndlp->nlp_flag &= ~NLP_NODEV_REMOVE;
4307 if (new_state == NLP_STE_NPR_NODE)
4308 ndlp->nlp_flag &= ~NLP_RCV_PLOGI;
4309
4310 /* FCP and NVME Transport interface */
4311 if ((old_state == NLP_STE_MAPPED_NODE ||
4312 old_state == NLP_STE_UNMAPPED_NODE)) {
4313 if (ndlp->rport) {
4314 vport->phba->nport_event_cnt++;
4315 lpfc_unregister_remote_port(ndlp);
4316 }
4317
4318 if (ndlp->nlp_fc4_type & NLP_FC4_NVME) {
4319 vport->phba->nport_event_cnt++;
4320 if (vport->phba->nvmet_support == 0) {
4321 /* Start devloss if target. */
4322 if (ndlp->nlp_type & NLP_NVME_TARGET)
4323 lpfc_nvme_unregister_port(vport, ndlp);
4324 } else {
4325 /* NVMET has no upcall. */
4326 lpfc_nlp_put(ndlp);
4327 }
4328 }
4329 }
4330
4331 /* FCP and NVME Transport interfaces */
4332
4333 if (new_state == NLP_STE_MAPPED_NODE ||
4334 new_state == NLP_STE_UNMAPPED_NODE) {
4335 if (ndlp->nlp_fc4_type ||
4336 ndlp->nlp_DID == Fabric_DID ||
4337 ndlp->nlp_DID == NameServer_DID ||
4338 ndlp->nlp_DID == FDMI_DID) {
4339 vport->phba->nport_event_cnt++;
4340 /*
4341 * Tell the fc transport about the port, if we haven't
4342 * already. If we have, and it's a scsi entity, be
4343 */
4344 lpfc_register_remote_port(vport, ndlp);
4345 }
4346 /* Notify the NVME transport of this new rport. */
4347 if (vport->phba->sli_rev >= LPFC_SLI_REV4 &&
4348 ndlp->nlp_fc4_type & NLP_FC4_NVME) {
4349 if (vport->phba->nvmet_support == 0) {
4350 /* Register this rport with the transport.
4351 * Only NVME Target Rports are registered with
4352 * the transport.
4353 */
4354 if (ndlp->nlp_type & NLP_NVME_TARGET) {
4355 vport->phba->nport_event_cnt++;
4356 lpfc_nvme_register_port(vport, ndlp);
4357 }
4358 } else {
4359 /* Just take an NDLP ref count since the
4360 * target does not register rports.
4361 */
4362 lpfc_nlp_get(ndlp);
4363 }
4364 }
4365 }
4366
4367 if ((new_state == NLP_STE_MAPPED_NODE) &&
4368 (vport->stat_data_enabled)) {
4369 /*
4370 * A new target is discovered, if there is no buffer for
4371 * statistical data collection allocate buffer.
4372 */
4373 ndlp->lat_data = kcalloc(LPFC_MAX_BUCKET_COUNT,
4374 sizeof(struct lpfc_scsicmd_bkt),
4375 GFP_KERNEL);
4376
4377 if (!ndlp->lat_data)
4378 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
4379 "0286 lpfc_nlp_state_cleanup failed to "
4380 "allocate statistical data buffer DID "
4381 "0x%x\n", ndlp->nlp_DID);
4382 }
4383 /*
4384 * If the node just added to Mapped list was an FCP target,
4385 * but the remote port registration failed or assigned a target
4386 * id outside the presentable range - move the node to the
4387 * Unmapped List.
4388 */
4389 if ((new_state == NLP_STE_MAPPED_NODE) &&
4390 (ndlp->nlp_type & NLP_FCP_TARGET) &&
4391 (!ndlp->rport ||
4392 ndlp->rport->scsi_target_id == -1 ||
4393 ndlp->rport->scsi_target_id >= LPFC_MAX_TARGET)) {
4394 spin_lock_irq(shost->host_lock);
4395 ndlp->nlp_flag |= NLP_TGT_NO_SCSIID;
4396 spin_unlock_irq(shost->host_lock);
4397 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
4398 }
4399 }
4400
4401 static char *
lpfc_nlp_state_name(char * buffer,size_t size,int state)4402 lpfc_nlp_state_name(char *buffer, size_t size, int state)
4403 {
4404 static char *states[] = {
4405 [NLP_STE_UNUSED_NODE] = "UNUSED",
4406 [NLP_STE_PLOGI_ISSUE] = "PLOGI",
4407 [NLP_STE_ADISC_ISSUE] = "ADISC",
4408 [NLP_STE_REG_LOGIN_ISSUE] = "REGLOGIN",
4409 [NLP_STE_PRLI_ISSUE] = "PRLI",
4410 [NLP_STE_LOGO_ISSUE] = "LOGO",
4411 [NLP_STE_UNMAPPED_NODE] = "UNMAPPED",
4412 [NLP_STE_MAPPED_NODE] = "MAPPED",
4413 [NLP_STE_NPR_NODE] = "NPR",
4414 };
4415
4416 if (state < NLP_STE_MAX_STATE && states[state])
4417 strlcpy(buffer, states[state], size);
4418 else
4419 snprintf(buffer, size, "unknown (%d)", state);
4420 return buffer;
4421 }
4422
4423 void
lpfc_nlp_set_state(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,int state)4424 lpfc_nlp_set_state(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
4425 int state)
4426 {
4427 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4428 int old_state = ndlp->nlp_state;
4429 char name1[16], name2[16];
4430
4431 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
4432 "0904 NPort state transition x%06x, %s -> %s\n",
4433 ndlp->nlp_DID,
4434 lpfc_nlp_state_name(name1, sizeof(name1), old_state),
4435 lpfc_nlp_state_name(name2, sizeof(name2), state));
4436
4437 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE,
4438 "node statechg did:x%x old:%d ste:%d",
4439 ndlp->nlp_DID, old_state, state);
4440
4441 if (old_state == NLP_STE_NPR_NODE &&
4442 state != NLP_STE_NPR_NODE)
4443 lpfc_cancel_retry_delay_tmo(vport, ndlp);
4444 if (old_state == NLP_STE_UNMAPPED_NODE) {
4445 ndlp->nlp_flag &= ~NLP_TGT_NO_SCSIID;
4446 ndlp->nlp_type &= ~NLP_FC_NODE;
4447 }
4448
4449 if (list_empty(&ndlp->nlp_listp)) {
4450 spin_lock_irq(shost->host_lock);
4451 list_add_tail(&ndlp->nlp_listp, &vport->fc_nodes);
4452 spin_unlock_irq(shost->host_lock);
4453 } else if (old_state)
4454 lpfc_nlp_counters(vport, old_state, -1);
4455
4456 ndlp->nlp_state = state;
4457 lpfc_nlp_counters(vport, state, 1);
4458 lpfc_nlp_state_cleanup(vport, ndlp, old_state, state);
4459 }
4460
4461 void
lpfc_enqueue_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp)4462 lpfc_enqueue_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
4463 {
4464 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4465
4466 if (list_empty(&ndlp->nlp_listp)) {
4467 spin_lock_irq(shost->host_lock);
4468 list_add_tail(&ndlp->nlp_listp, &vport->fc_nodes);
4469 spin_unlock_irq(shost->host_lock);
4470 }
4471 }
4472
4473 void
lpfc_dequeue_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp)4474 lpfc_dequeue_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
4475 {
4476 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4477
4478 lpfc_cancel_retry_delay_tmo(vport, ndlp);
4479 if (ndlp->nlp_state && !list_empty(&ndlp->nlp_listp))
4480 lpfc_nlp_counters(vport, ndlp->nlp_state, -1);
4481 spin_lock_irq(shost->host_lock);
4482 list_del_init(&ndlp->nlp_listp);
4483 spin_unlock_irq(shost->host_lock);
4484 lpfc_nlp_state_cleanup(vport, ndlp, ndlp->nlp_state,
4485 NLP_STE_UNUSED_NODE);
4486 }
4487
4488 static void
lpfc_disable_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp)4489 lpfc_disable_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
4490 {
4491 lpfc_cancel_retry_delay_tmo(vport, ndlp);
4492 if (ndlp->nlp_state && !list_empty(&ndlp->nlp_listp))
4493 lpfc_nlp_counters(vport, ndlp->nlp_state, -1);
4494 lpfc_nlp_state_cleanup(vport, ndlp, ndlp->nlp_state,
4495 NLP_STE_UNUSED_NODE);
4496 }
4497 /**
4498 * lpfc_initialize_node - Initialize all fields of node object
4499 * @vport: Pointer to Virtual Port object.
4500 * @ndlp: Pointer to FC node object.
4501 * @did: FC_ID of the node.
4502 *
4503 * This function is always called when node object need to be initialized.
4504 * It initializes all the fields of the node object. Although the reference
4505 * to phba from @ndlp can be obtained indirectly through it's reference to
4506 * @vport, a direct reference to phba is taken here by @ndlp. This is due
4507 * to the life-span of the @ndlp might go beyond the existence of @vport as
4508 * the final release of ndlp is determined by its reference count. And, the
4509 * operation on @ndlp needs the reference to phba.
4510 **/
4511 static inline void
lpfc_initialize_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,uint32_t did)4512 lpfc_initialize_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
4513 uint32_t did)
4514 {
4515 INIT_LIST_HEAD(&ndlp->els_retry_evt.evt_listp);
4516 INIT_LIST_HEAD(&ndlp->dev_loss_evt.evt_listp);
4517 timer_setup(&ndlp->nlp_delayfunc, lpfc_els_retry_delay, 0);
4518 ndlp->nlp_DID = did;
4519 ndlp->vport = vport;
4520 ndlp->phba = vport->phba;
4521 ndlp->nlp_sid = NLP_NO_SID;
4522 ndlp->nlp_fc4_type = NLP_FC4_NONE;
4523 kref_init(&ndlp->kref);
4524 NLP_INT_NODE_ACT(ndlp);
4525 atomic_set(&ndlp->cmd_pending, 0);
4526 ndlp->cmd_qdepth = vport->cfg_tgt_queue_depth;
4527 ndlp->nlp_defer_did = NLP_EVT_NOTHING_PENDING;
4528 }
4529
4530 struct lpfc_nodelist *
lpfc_enable_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,int state)4531 lpfc_enable_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
4532 int state)
4533 {
4534 struct lpfc_hba *phba = vport->phba;
4535 uint32_t did, flag;
4536 unsigned long flags;
4537 unsigned long *active_rrqs_xri_bitmap = NULL;
4538 int rpi = LPFC_RPI_ALLOC_ERROR;
4539 uint32_t defer_did = 0;
4540
4541 if (!ndlp)
4542 return NULL;
4543
4544 if (phba->sli_rev == LPFC_SLI_REV4) {
4545 if (ndlp->nlp_rpi == LPFC_RPI_ALLOC_ERROR)
4546 rpi = lpfc_sli4_alloc_rpi(vport->phba);
4547 else
4548 rpi = ndlp->nlp_rpi;
4549
4550 if (rpi == LPFC_RPI_ALLOC_ERROR) {
4551 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NODE,
4552 "0359 %s: ndlp:x%px "
4553 "usgmap:x%x refcnt:%d FAILED RPI "
4554 " ALLOC\n",
4555 __func__,
4556 (void *)ndlp, ndlp->nlp_usg_map,
4557 kref_read(&ndlp->kref));
4558 return NULL;
4559 }
4560 }
4561
4562 spin_lock_irqsave(&phba->ndlp_lock, flags);
4563 /* The ndlp should not be in memory free mode */
4564 if (NLP_CHK_FREE_REQ(ndlp)) {
4565 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
4566 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NODE,
4567 "0277 %s: ndlp:x%px "
4568 "usgmap:x%x refcnt:%d\n",
4569 __func__, (void *)ndlp, ndlp->nlp_usg_map,
4570 kref_read(&ndlp->kref));
4571 goto free_rpi;
4572 }
4573 /* The ndlp should not already be in active mode */
4574 if (NLP_CHK_NODE_ACT(ndlp)) {
4575 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
4576 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NODE,
4577 "0278 %s: ndlp:x%px "
4578 "usgmap:x%x refcnt:%d\n",
4579 __func__, (void *)ndlp, ndlp->nlp_usg_map,
4580 kref_read(&ndlp->kref));
4581 goto free_rpi;
4582 }
4583
4584 /* First preserve the orginal DID, xri_bitmap and some flags */
4585 did = ndlp->nlp_DID;
4586 flag = (ndlp->nlp_flag & NLP_UNREG_INP);
4587 if (flag & NLP_UNREG_INP)
4588 defer_did = ndlp->nlp_defer_did;
4589 if (phba->sli_rev == LPFC_SLI_REV4)
4590 active_rrqs_xri_bitmap = ndlp->active_rrqs_xri_bitmap;
4591
4592 /* Zero ndlp except of ndlp linked list pointer */
4593 memset((((char *)ndlp) + sizeof (struct list_head)), 0,
4594 sizeof (struct lpfc_nodelist) - sizeof (struct list_head));
4595
4596 /* Next reinitialize and restore saved objects */
4597 lpfc_initialize_node(vport, ndlp, did);
4598 ndlp->nlp_flag |= flag;
4599 if (flag & NLP_UNREG_INP)
4600 ndlp->nlp_defer_did = defer_did;
4601 if (phba->sli_rev == LPFC_SLI_REV4)
4602 ndlp->active_rrqs_xri_bitmap = active_rrqs_xri_bitmap;
4603
4604 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
4605 if (vport->phba->sli_rev == LPFC_SLI_REV4) {
4606 ndlp->nlp_rpi = rpi;
4607 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
4608 "0008 rpi:%x DID:%x flg:%x refcnt:%d "
4609 "map:%x x%px\n", ndlp->nlp_rpi, ndlp->nlp_DID,
4610 ndlp->nlp_flag,
4611 kref_read(&ndlp->kref),
4612 ndlp->nlp_usg_map, ndlp);
4613 }
4614
4615
4616 if (state != NLP_STE_UNUSED_NODE)
4617 lpfc_nlp_set_state(vport, ndlp, state);
4618 else
4619 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
4620 "0013 rpi:%x DID:%x flg:%x refcnt:%d "
4621 "map:%x x%px STATE=UNUSED\n",
4622 ndlp->nlp_rpi, ndlp->nlp_DID,
4623 ndlp->nlp_flag,
4624 kref_read(&ndlp->kref),
4625 ndlp->nlp_usg_map, ndlp);
4626
4627 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE,
4628 "node enable: did:x%x",
4629 ndlp->nlp_DID, 0, 0);
4630 return ndlp;
4631
4632 free_rpi:
4633 if (phba->sli_rev == LPFC_SLI_REV4) {
4634 lpfc_sli4_free_rpi(vport->phba, rpi);
4635 ndlp->nlp_rpi = LPFC_RPI_ALLOC_ERROR;
4636 }
4637 return NULL;
4638 }
4639
4640 void
lpfc_drop_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp)4641 lpfc_drop_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
4642 {
4643 /*
4644 * Use of lpfc_drop_node and UNUSED list: lpfc_drop_node should
4645 * be used if we wish to issue the "last" lpfc_nlp_put() to remove
4646 * the ndlp from the vport. The ndlp marked as UNUSED on the list
4647 * until ALL other outstanding threads have completed. We check
4648 * that the ndlp not already in the UNUSED state before we proceed.
4649 */
4650 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
4651 return;
4652 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNUSED_NODE);
4653 if (vport->phba->sli_rev == LPFC_SLI_REV4) {
4654 lpfc_cleanup_vports_rrqs(vport, ndlp);
4655 lpfc_unreg_rpi(vport, ndlp);
4656 }
4657
4658 lpfc_nlp_put(ndlp);
4659 return;
4660 }
4661
4662 /*
4663 * Start / ReStart rescue timer for Discovery / RSCN handling
4664 */
4665 void
lpfc_set_disctmo(struct lpfc_vport * vport)4666 lpfc_set_disctmo(struct lpfc_vport *vport)
4667 {
4668 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4669 struct lpfc_hba *phba = vport->phba;
4670 uint32_t tmo;
4671
4672 if (vport->port_state == LPFC_LOCAL_CFG_LINK) {
4673 /* For FAN, timeout should be greater than edtov */
4674 tmo = (((phba->fc_edtov + 999) / 1000) + 1);
4675 } else {
4676 /* Normal discovery timeout should be > than ELS/CT timeout
4677 * FC spec states we need 3 * ratov for CT requests
4678 */
4679 tmo = ((phba->fc_ratov * 3) + 3);
4680 }
4681
4682
4683 if (!timer_pending(&vport->fc_disctmo)) {
4684 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
4685 "set disc timer: tmo:x%x state:x%x flg:x%x",
4686 tmo, vport->port_state, vport->fc_flag);
4687 }
4688
4689 mod_timer(&vport->fc_disctmo, jiffies + msecs_to_jiffies(1000 * tmo));
4690 spin_lock_irq(shost->host_lock);
4691 vport->fc_flag |= FC_DISC_TMO;
4692 spin_unlock_irq(shost->host_lock);
4693
4694 /* Start Discovery Timer state <hba_state> */
4695 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
4696 "0247 Start Discovery Timer state x%x "
4697 "Data: x%x x%lx x%x x%x\n",
4698 vport->port_state, tmo,
4699 (unsigned long)&vport->fc_disctmo, vport->fc_plogi_cnt,
4700 vport->fc_adisc_cnt);
4701
4702 return;
4703 }
4704
4705 /*
4706 * Cancel rescue timer for Discovery / RSCN handling
4707 */
4708 int
lpfc_can_disctmo(struct lpfc_vport * vport)4709 lpfc_can_disctmo(struct lpfc_vport *vport)
4710 {
4711 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4712 unsigned long iflags;
4713
4714 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
4715 "can disc timer: state:x%x rtry:x%x flg:x%x",
4716 vport->port_state, vport->fc_ns_retry, vport->fc_flag);
4717
4718 /* Turn off discovery timer if its running */
4719 if (vport->fc_flag & FC_DISC_TMO) {
4720 spin_lock_irqsave(shost->host_lock, iflags);
4721 vport->fc_flag &= ~FC_DISC_TMO;
4722 spin_unlock_irqrestore(shost->host_lock, iflags);
4723 del_timer_sync(&vport->fc_disctmo);
4724 spin_lock_irqsave(&vport->work_port_lock, iflags);
4725 vport->work_port_events &= ~WORKER_DISC_TMO;
4726 spin_unlock_irqrestore(&vport->work_port_lock, iflags);
4727 }
4728
4729 /* Cancel Discovery Timer state <hba_state> */
4730 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
4731 "0248 Cancel Discovery Timer state x%x "
4732 "Data: x%x x%x x%x\n",
4733 vport->port_state, vport->fc_flag,
4734 vport->fc_plogi_cnt, vport->fc_adisc_cnt);
4735 return 0;
4736 }
4737
4738 /*
4739 * Check specified ring for outstanding IOCB on the SLI queue
4740 * Return true if iocb matches the specified nport
4741 */
4742 int
lpfc_check_sli_ndlp(struct lpfc_hba * phba,struct lpfc_sli_ring * pring,struct lpfc_iocbq * iocb,struct lpfc_nodelist * ndlp)4743 lpfc_check_sli_ndlp(struct lpfc_hba *phba,
4744 struct lpfc_sli_ring *pring,
4745 struct lpfc_iocbq *iocb,
4746 struct lpfc_nodelist *ndlp)
4747 {
4748 IOCB_t *icmd = &iocb->iocb;
4749 struct lpfc_vport *vport = ndlp->vport;
4750
4751 if (iocb->vport != vport)
4752 return 0;
4753
4754 if (pring->ringno == LPFC_ELS_RING) {
4755 switch (icmd->ulpCommand) {
4756 case CMD_GEN_REQUEST64_CR:
4757 if (iocb->context_un.ndlp == ndlp)
4758 return 1;
4759 fallthrough;
4760 case CMD_ELS_REQUEST64_CR:
4761 if (icmd->un.elsreq64.remoteID == ndlp->nlp_DID)
4762 return 1;
4763 fallthrough;
4764 case CMD_XMIT_ELS_RSP64_CX:
4765 if (iocb->context1 == (uint8_t *) ndlp)
4766 return 1;
4767 }
4768 } else if (pring->ringno == LPFC_FCP_RING) {
4769 /* Skip match check if waiting to relogin to FCP target */
4770 if ((ndlp->nlp_type & NLP_FCP_TARGET) &&
4771 (ndlp->nlp_flag & NLP_DELAY_TMO)) {
4772 return 0;
4773 }
4774 if (icmd->ulpContext == (volatile ushort)ndlp->nlp_rpi) {
4775 return 1;
4776 }
4777 }
4778 return 0;
4779 }
4780
4781 static void
__lpfc_dequeue_nport_iocbs(struct lpfc_hba * phba,struct lpfc_nodelist * ndlp,struct lpfc_sli_ring * pring,struct list_head * dequeue_list)4782 __lpfc_dequeue_nport_iocbs(struct lpfc_hba *phba,
4783 struct lpfc_nodelist *ndlp, struct lpfc_sli_ring *pring,
4784 struct list_head *dequeue_list)
4785 {
4786 struct lpfc_iocbq *iocb, *next_iocb;
4787
4788 list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) {
4789 /* Check to see if iocb matches the nport */
4790 if (lpfc_check_sli_ndlp(phba, pring, iocb, ndlp))
4791 /* match, dequeue */
4792 list_move_tail(&iocb->list, dequeue_list);
4793 }
4794 }
4795
4796 static void
lpfc_sli3_dequeue_nport_iocbs(struct lpfc_hba * phba,struct lpfc_nodelist * ndlp,struct list_head * dequeue_list)4797 lpfc_sli3_dequeue_nport_iocbs(struct lpfc_hba *phba,
4798 struct lpfc_nodelist *ndlp, struct list_head *dequeue_list)
4799 {
4800 struct lpfc_sli *psli = &phba->sli;
4801 uint32_t i;
4802
4803 spin_lock_irq(&phba->hbalock);
4804 for (i = 0; i < psli->num_rings; i++)
4805 __lpfc_dequeue_nport_iocbs(phba, ndlp, &psli->sli3_ring[i],
4806 dequeue_list);
4807 spin_unlock_irq(&phba->hbalock);
4808 }
4809
4810 static void
lpfc_sli4_dequeue_nport_iocbs(struct lpfc_hba * phba,struct lpfc_nodelist * ndlp,struct list_head * dequeue_list)4811 lpfc_sli4_dequeue_nport_iocbs(struct lpfc_hba *phba,
4812 struct lpfc_nodelist *ndlp, struct list_head *dequeue_list)
4813 {
4814 struct lpfc_sli_ring *pring;
4815 struct lpfc_queue *qp = NULL;
4816
4817 spin_lock_irq(&phba->hbalock);
4818 list_for_each_entry(qp, &phba->sli4_hba.lpfc_wq_list, wq_list) {
4819 pring = qp->pring;
4820 if (!pring)
4821 continue;
4822 spin_lock(&pring->ring_lock);
4823 __lpfc_dequeue_nport_iocbs(phba, ndlp, pring, dequeue_list);
4824 spin_unlock(&pring->ring_lock);
4825 }
4826 spin_unlock_irq(&phba->hbalock);
4827 }
4828
4829 /*
4830 * Free resources / clean up outstanding I/Os
4831 * associated with nlp_rpi in the LPFC_NODELIST entry.
4832 */
4833 static int
lpfc_no_rpi(struct lpfc_hba * phba,struct lpfc_nodelist * ndlp)4834 lpfc_no_rpi(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
4835 {
4836 LIST_HEAD(completions);
4837
4838 lpfc_fabric_abort_nport(ndlp);
4839
4840 /*
4841 * Everything that matches on txcmplq will be returned
4842 * by firmware with a no rpi error.
4843 */
4844 if (ndlp->nlp_flag & NLP_RPI_REGISTERED) {
4845 if (phba->sli_rev != LPFC_SLI_REV4)
4846 lpfc_sli3_dequeue_nport_iocbs(phba, ndlp, &completions);
4847 else
4848 lpfc_sli4_dequeue_nport_iocbs(phba, ndlp, &completions);
4849 }
4850
4851 /* Cancel all the IOCBs from the completions list */
4852 lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT,
4853 IOERR_SLI_ABORTED);
4854
4855 return 0;
4856 }
4857
4858 /**
4859 * lpfc_nlp_logo_unreg - Unreg mailbox completion handler before LOGO
4860 * @phba: Pointer to HBA context object.
4861 * @pmb: Pointer to mailbox object.
4862 *
4863 * This function will issue an ELS LOGO command after completing
4864 * the UNREG_RPI.
4865 **/
4866 static void
lpfc_nlp_logo_unreg(struct lpfc_hba * phba,LPFC_MBOXQ_t * pmb)4867 lpfc_nlp_logo_unreg(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
4868 {
4869 struct lpfc_vport *vport = pmb->vport;
4870 struct lpfc_nodelist *ndlp;
4871
4872 ndlp = (struct lpfc_nodelist *)(pmb->ctx_ndlp);
4873 if (!ndlp)
4874 return;
4875 lpfc_issue_els_logo(vport, ndlp, 0);
4876 mempool_free(pmb, phba->mbox_mem_pool);
4877
4878 /* Check to see if there are any deferred events to process */
4879 if ((ndlp->nlp_flag & NLP_UNREG_INP) &&
4880 (ndlp->nlp_defer_did != NLP_EVT_NOTHING_PENDING)) {
4881 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
4882 "1434 UNREG cmpl deferred logo x%x "
4883 "on NPort x%x Data: x%x x%px\n",
4884 ndlp->nlp_rpi, ndlp->nlp_DID,
4885 ndlp->nlp_defer_did, ndlp);
4886
4887 ndlp->nlp_flag &= ~NLP_UNREG_INP;
4888 ndlp->nlp_defer_did = NLP_EVT_NOTHING_PENDING;
4889 lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
4890 } else {
4891 if (ndlp->nlp_flag & NLP_RELEASE_RPI) {
4892 lpfc_sli4_free_rpi(vport->phba, ndlp->nlp_rpi);
4893 ndlp->nlp_flag &= ~NLP_RELEASE_RPI;
4894 ndlp->nlp_rpi = LPFC_RPI_ALLOC_ERROR;
4895 }
4896 ndlp->nlp_flag &= ~NLP_UNREG_INP;
4897 }
4898 }
4899
4900 /*
4901 * Sets the mailbox completion handler to be used for the
4902 * unreg_rpi command. The handler varies based on the state of
4903 * the port and what will be happening to the rpi next.
4904 */
4905 static void
lpfc_set_unreg_login_mbx_cmpl(struct lpfc_hba * phba,struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,LPFC_MBOXQ_t * mbox)4906 lpfc_set_unreg_login_mbx_cmpl(struct lpfc_hba *phba, struct lpfc_vport *vport,
4907 struct lpfc_nodelist *ndlp, LPFC_MBOXQ_t *mbox)
4908 {
4909 unsigned long iflags;
4910
4911 if (ndlp->nlp_flag & NLP_ISSUE_LOGO) {
4912 mbox->ctx_ndlp = ndlp;
4913 mbox->mbox_cmpl = lpfc_nlp_logo_unreg;
4914
4915 } else if (phba->sli_rev == LPFC_SLI_REV4 &&
4916 (!(vport->load_flag & FC_UNLOADING)) &&
4917 (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) >=
4918 LPFC_SLI_INTF_IF_TYPE_2) &&
4919 (kref_read(&ndlp->kref) > 0)) {
4920 mbox->ctx_ndlp = lpfc_nlp_get(ndlp);
4921 mbox->mbox_cmpl = lpfc_sli4_unreg_rpi_cmpl_clr;
4922 } else {
4923 if (vport->load_flag & FC_UNLOADING) {
4924 if (phba->sli_rev == LPFC_SLI_REV4) {
4925 spin_lock_irqsave(&vport->phba->ndlp_lock,
4926 iflags);
4927 ndlp->nlp_flag |= NLP_RELEASE_RPI;
4928 spin_unlock_irqrestore(&vport->phba->ndlp_lock,
4929 iflags);
4930 }
4931 lpfc_nlp_get(ndlp);
4932 }
4933 mbox->ctx_ndlp = ndlp;
4934 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
4935 }
4936 }
4937
4938 /*
4939 * Free rpi associated with LPFC_NODELIST entry.
4940 * This routine is called from lpfc_freenode(), when we are removing
4941 * a LPFC_NODELIST entry. It is also called if the driver initiates a
4942 * LOGO that completes successfully, and we are waiting to PLOGI back
4943 * to the remote NPort. In addition, it is called after we receive
4944 * and unsolicated ELS cmd, send back a rsp, the rsp completes and
4945 * we are waiting to PLOGI back to the remote NPort.
4946 */
4947 int
lpfc_unreg_rpi(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp)4948 lpfc_unreg_rpi(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
4949 {
4950 struct lpfc_hba *phba = vport->phba;
4951 LPFC_MBOXQ_t *mbox;
4952 int rc, acc_plogi = 1;
4953 uint16_t rpi;
4954
4955 if (ndlp->nlp_flag & NLP_RPI_REGISTERED ||
4956 ndlp->nlp_flag & NLP_REG_LOGIN_SEND) {
4957 if (ndlp->nlp_flag & NLP_REG_LOGIN_SEND)
4958 lpfc_printf_vlog(vport, KERN_INFO,
4959 LOG_NODE | LOG_DISCOVERY,
4960 "3366 RPI x%x needs to be "
4961 "unregistered nlp_flag x%x "
4962 "did x%x\n",
4963 ndlp->nlp_rpi, ndlp->nlp_flag,
4964 ndlp->nlp_DID);
4965
4966 /* If there is already an UNREG in progress for this ndlp,
4967 * no need to queue up another one.
4968 */
4969 if (ndlp->nlp_flag & NLP_UNREG_INP) {
4970 lpfc_printf_vlog(vport, KERN_INFO,
4971 LOG_NODE | LOG_DISCOVERY,
4972 "1436 unreg_rpi SKIP UNREG x%x on "
4973 "NPort x%x deferred x%x flg x%x "
4974 "Data: x%px\n",
4975 ndlp->nlp_rpi, ndlp->nlp_DID,
4976 ndlp->nlp_defer_did,
4977 ndlp->nlp_flag, ndlp);
4978 goto out;
4979 }
4980
4981 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
4982 if (mbox) {
4983 /* SLI4 ports require the physical rpi value. */
4984 rpi = ndlp->nlp_rpi;
4985 if (phba->sli_rev == LPFC_SLI_REV4)
4986 rpi = phba->sli4_hba.rpi_ids[ndlp->nlp_rpi];
4987
4988 lpfc_unreg_login(phba, vport->vpi, rpi, mbox);
4989 mbox->vport = vport;
4990 lpfc_set_unreg_login_mbx_cmpl(phba, vport, ndlp, mbox);
4991 if (mbox->mbox_cmpl == lpfc_sli4_unreg_rpi_cmpl_clr)
4992 /*
4993 * accept PLOGIs after unreg_rpi_cmpl
4994 */
4995 acc_plogi = 0;
4996 if (((ndlp->nlp_DID & Fabric_DID_MASK) !=
4997 Fabric_DID_MASK) &&
4998 (!(vport->fc_flag & FC_OFFLINE_MODE)))
4999 ndlp->nlp_flag |= NLP_UNREG_INP;
5000
5001 lpfc_printf_vlog(vport, KERN_INFO,
5002 LOG_NODE | LOG_DISCOVERY,
5003 "1433 unreg_rpi UNREG x%x on "
5004 "NPort x%x deferred flg x%x "
5005 "Data:x%px\n",
5006 ndlp->nlp_rpi, ndlp->nlp_DID,
5007 ndlp->nlp_flag, ndlp);
5008
5009 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
5010 if (rc == MBX_NOT_FINISHED) {
5011 mempool_free(mbox, phba->mbox_mem_pool);
5012 acc_plogi = 1;
5013 }
5014 }
5015 lpfc_no_rpi(phba, ndlp);
5016 out:
5017 if (phba->sli_rev != LPFC_SLI_REV4)
5018 ndlp->nlp_rpi = 0;
5019 ndlp->nlp_flag &= ~NLP_RPI_REGISTERED;
5020 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
5021 if (acc_plogi)
5022 ndlp->nlp_flag &= ~NLP_LOGO_ACC;
5023 return 1;
5024 }
5025 ndlp->nlp_flag &= ~NLP_LOGO_ACC;
5026 return 0;
5027 }
5028
5029 /**
5030 * lpfc_unreg_hba_rpis - Unregister rpis registered to the hba.
5031 * @phba: pointer to lpfc hba data structure.
5032 *
5033 * This routine is invoked to unregister all the currently registered RPIs
5034 * to the HBA.
5035 **/
5036 void
lpfc_unreg_hba_rpis(struct lpfc_hba * phba)5037 lpfc_unreg_hba_rpis(struct lpfc_hba *phba)
5038 {
5039 struct lpfc_vport **vports;
5040 struct lpfc_nodelist *ndlp;
5041 struct Scsi_Host *shost;
5042 int i;
5043
5044 vports = lpfc_create_vport_work_array(phba);
5045 if (!vports) {
5046 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
5047 "2884 Vport array allocation failed \n");
5048 return;
5049 }
5050 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
5051 shost = lpfc_shost_from_vport(vports[i]);
5052 spin_lock_irq(shost->host_lock);
5053 list_for_each_entry(ndlp, &vports[i]->fc_nodes, nlp_listp) {
5054 if (ndlp->nlp_flag & NLP_RPI_REGISTERED) {
5055 /* The mempool_alloc might sleep */
5056 spin_unlock_irq(shost->host_lock);
5057 lpfc_unreg_rpi(vports[i], ndlp);
5058 spin_lock_irq(shost->host_lock);
5059 }
5060 }
5061 spin_unlock_irq(shost->host_lock);
5062 }
5063 lpfc_destroy_vport_work_array(phba, vports);
5064 }
5065
5066 void
lpfc_unreg_all_rpis(struct lpfc_vport * vport)5067 lpfc_unreg_all_rpis(struct lpfc_vport *vport)
5068 {
5069 struct lpfc_hba *phba = vport->phba;
5070 LPFC_MBOXQ_t *mbox;
5071 int rc;
5072
5073 if (phba->sli_rev == LPFC_SLI_REV4) {
5074 lpfc_sli4_unreg_all_rpis(vport);
5075 return;
5076 }
5077
5078 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
5079 if (mbox) {
5080 lpfc_unreg_login(phba, vport->vpi, LPFC_UNREG_ALL_RPIS_VPORT,
5081 mbox);
5082 mbox->vport = vport;
5083 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
5084 mbox->ctx_ndlp = NULL;
5085 rc = lpfc_sli_issue_mbox_wait(phba, mbox, LPFC_MBOX_TMO);
5086 if (rc != MBX_TIMEOUT)
5087 mempool_free(mbox, phba->mbox_mem_pool);
5088
5089 if ((rc == MBX_TIMEOUT) || (rc == MBX_NOT_FINISHED))
5090 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
5091 "1836 Could not issue "
5092 "unreg_login(all_rpis) status %d\n",
5093 rc);
5094 }
5095 }
5096
5097 void
lpfc_unreg_default_rpis(struct lpfc_vport * vport)5098 lpfc_unreg_default_rpis(struct lpfc_vport *vport)
5099 {
5100 struct lpfc_hba *phba = vport->phba;
5101 LPFC_MBOXQ_t *mbox;
5102 int rc;
5103
5104 /* Unreg DID is an SLI3 operation. */
5105 if (phba->sli_rev > LPFC_SLI_REV3)
5106 return;
5107
5108 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
5109 if (mbox) {
5110 lpfc_unreg_did(phba, vport->vpi, LPFC_UNREG_ALL_DFLT_RPIS,
5111 mbox);
5112 mbox->vport = vport;
5113 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
5114 mbox->ctx_ndlp = NULL;
5115 rc = lpfc_sli_issue_mbox_wait(phba, mbox, LPFC_MBOX_TMO);
5116 if (rc != MBX_TIMEOUT)
5117 mempool_free(mbox, phba->mbox_mem_pool);
5118
5119 if ((rc == MBX_TIMEOUT) || (rc == MBX_NOT_FINISHED))
5120 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
5121 "1815 Could not issue "
5122 "unreg_did (default rpis) status %d\n",
5123 rc);
5124 }
5125 }
5126
5127 /*
5128 * Free resources associated with LPFC_NODELIST entry
5129 * so it can be freed.
5130 */
5131 static int
lpfc_cleanup_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp)5132 lpfc_cleanup_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
5133 {
5134 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
5135 struct lpfc_hba *phba = vport->phba;
5136 LPFC_MBOXQ_t *mb, *nextmb;
5137 struct lpfc_dmabuf *mp;
5138 unsigned long iflags;
5139
5140 /* Cleanup node for NPort <nlp_DID> */
5141 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
5142 "0900 Cleanup node for NPort x%x "
5143 "Data: x%x x%x x%x\n",
5144 ndlp->nlp_DID, ndlp->nlp_flag,
5145 ndlp->nlp_state, ndlp->nlp_rpi);
5146 if (NLP_CHK_FREE_REQ(ndlp)) {
5147 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NODE,
5148 "0280 %s: ndlp:x%px "
5149 "usgmap:x%x refcnt:%d\n",
5150 __func__, (void *)ndlp, ndlp->nlp_usg_map,
5151 kref_read(&ndlp->kref));
5152 lpfc_dequeue_node(vport, ndlp);
5153 } else {
5154 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NODE,
5155 "0281 %s: ndlp:x%px "
5156 "usgmap:x%x refcnt:%d\n",
5157 __func__, (void *)ndlp, ndlp->nlp_usg_map,
5158 kref_read(&ndlp->kref));
5159 lpfc_disable_node(vport, ndlp);
5160 }
5161
5162
5163 /* Don't need to clean up REG_LOGIN64 cmds for Default RPI cleanup */
5164
5165 /* cleanup any ndlp on mbox q waiting for reglogin cmpl */
5166 if ((mb = phba->sli.mbox_active)) {
5167 if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) &&
5168 !(mb->mbox_flag & LPFC_MBX_IMED_UNREG) &&
5169 (ndlp == (struct lpfc_nodelist *)mb->ctx_ndlp)) {
5170 mb->ctx_ndlp = NULL;
5171 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
5172 }
5173 }
5174
5175 spin_lock_irq(&phba->hbalock);
5176 /* Cleanup REG_LOGIN completions which are not yet processed */
5177 list_for_each_entry(mb, &phba->sli.mboxq_cmpl, list) {
5178 if ((mb->u.mb.mbxCommand != MBX_REG_LOGIN64) ||
5179 (mb->mbox_flag & LPFC_MBX_IMED_UNREG) ||
5180 (ndlp != (struct lpfc_nodelist *)mb->ctx_ndlp))
5181 continue;
5182
5183 mb->ctx_ndlp = NULL;
5184 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
5185 }
5186
5187 list_for_each_entry_safe(mb, nextmb, &phba->sli.mboxq, list) {
5188 if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) &&
5189 !(mb->mbox_flag & LPFC_MBX_IMED_UNREG) &&
5190 (ndlp == (struct lpfc_nodelist *)mb->ctx_ndlp)) {
5191 mp = (struct lpfc_dmabuf *)(mb->ctx_buf);
5192 if (mp) {
5193 __lpfc_mbuf_free(phba, mp->virt, mp->phys);
5194 kfree(mp);
5195 }
5196 list_del(&mb->list);
5197 mempool_free(mb, phba->mbox_mem_pool);
5198 /* We shall not invoke the lpfc_nlp_put to decrement
5199 * the ndlp reference count as we are in the process
5200 * of lpfc_nlp_release.
5201 */
5202 }
5203 }
5204 spin_unlock_irq(&phba->hbalock);
5205
5206 lpfc_els_abort(phba, ndlp);
5207
5208 spin_lock_irq(shost->host_lock);
5209 ndlp->nlp_flag &= ~NLP_DELAY_TMO;
5210 spin_unlock_irq(shost->host_lock);
5211
5212 ndlp->nlp_last_elscmd = 0;
5213 del_timer_sync(&ndlp->nlp_delayfunc);
5214
5215 list_del_init(&ndlp->els_retry_evt.evt_listp);
5216 list_del_init(&ndlp->dev_loss_evt.evt_listp);
5217 lpfc_cleanup_vports_rrqs(vport, ndlp);
5218 if (phba->sli_rev == LPFC_SLI_REV4)
5219 ndlp->nlp_flag |= NLP_RELEASE_RPI;
5220 if (!lpfc_unreg_rpi(vport, ndlp)) {
5221 /* Clean up unregistered and non freed rpis */
5222 if ((ndlp->nlp_flag & NLP_RELEASE_RPI) &&
5223 !(ndlp->nlp_rpi == LPFC_RPI_ALLOC_ERROR)) {
5224 lpfc_sli4_free_rpi(vport->phba,
5225 ndlp->nlp_rpi);
5226 spin_lock_irqsave(&vport->phba->ndlp_lock,
5227 iflags);
5228 ndlp->nlp_flag &= ~NLP_RELEASE_RPI;
5229 ndlp->nlp_rpi = LPFC_RPI_ALLOC_ERROR;
5230 spin_unlock_irqrestore(&vport->phba->ndlp_lock,
5231 iflags);
5232 }
5233 }
5234 return 0;
5235 }
5236
5237 /*
5238 * Check to see if we can free the nlp back to the freelist.
5239 * If we are in the middle of using the nlp in the discovery state
5240 * machine, defer the free till we reach the end of the state machine.
5241 */
5242 static void
lpfc_nlp_remove(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp)5243 lpfc_nlp_remove(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
5244 {
5245 struct lpfc_hba *phba = vport->phba;
5246 struct lpfc_rport_data *rdata;
5247 struct fc_rport *rport;
5248 LPFC_MBOXQ_t *mbox;
5249 int rc;
5250
5251 lpfc_cancel_retry_delay_tmo(vport, ndlp);
5252 if ((ndlp->nlp_flag & NLP_DEFER_RM) &&
5253 !(ndlp->nlp_flag & NLP_REG_LOGIN_SEND) &&
5254 !(ndlp->nlp_flag & NLP_RPI_REGISTERED) &&
5255 phba->sli_rev != LPFC_SLI_REV4) {
5256 /* For this case we need to cleanup the default rpi
5257 * allocated by the firmware.
5258 */
5259 lpfc_printf_vlog(vport, KERN_INFO,
5260 LOG_NODE | LOG_DISCOVERY,
5261 "0005 Cleanup Default rpi:x%x DID:x%x flg:x%x "
5262 "ref %d map:x%x ndlp x%px\n",
5263 ndlp->nlp_rpi, ndlp->nlp_DID, ndlp->nlp_flag,
5264 kref_read(&ndlp->kref),
5265 ndlp->nlp_usg_map, ndlp);
5266 if ((mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL))
5267 != NULL) {
5268 rc = lpfc_reg_rpi(phba, vport->vpi, ndlp->nlp_DID,
5269 (uint8_t *) &vport->fc_sparam, mbox, ndlp->nlp_rpi);
5270 if (rc) {
5271 mempool_free(mbox, phba->mbox_mem_pool);
5272 }
5273 else {
5274 mbox->mbox_flag |= LPFC_MBX_IMED_UNREG;
5275 mbox->mbox_cmpl = lpfc_mbx_cmpl_dflt_rpi;
5276 mbox->vport = vport;
5277 mbox->ctx_ndlp = ndlp;
5278 rc =lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
5279 if (rc == MBX_NOT_FINISHED) {
5280 mempool_free(mbox, phba->mbox_mem_pool);
5281 }
5282 }
5283 }
5284 }
5285 lpfc_cleanup_node(vport, ndlp);
5286
5287 /*
5288 * ndlp->rport must be set to NULL before it reaches here
5289 * i.e. break rport/node link before doing lpfc_nlp_put for
5290 * registered rport and then drop the reference of rport.
5291 */
5292 if (ndlp->rport) {
5293 /*
5294 * extra lpfc_nlp_put dropped the reference of ndlp
5295 * for registered rport so need to cleanup rport
5296 */
5297 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NODE,
5298 "0940 removed node x%px DID x%x "
5299 "rpi %d rport not null x%px\n",
5300 ndlp, ndlp->nlp_DID, ndlp->nlp_rpi,
5301 ndlp->rport);
5302 rport = ndlp->rport;
5303 rdata = rport->dd_data;
5304 rdata->pnode = NULL;
5305 ndlp->rport = NULL;
5306 put_device(&rport->dev);
5307 }
5308 }
5309
5310 static int
lpfc_matchdid(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,uint32_t did)5311 lpfc_matchdid(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
5312 uint32_t did)
5313 {
5314 D_ID mydid, ndlpdid, matchdid;
5315
5316 if (did == Bcast_DID)
5317 return 0;
5318
5319 /* First check for Direct match */
5320 if (ndlp->nlp_DID == did)
5321 return 1;
5322
5323 /* Next check for area/domain identically equals 0 match */
5324 mydid.un.word = vport->fc_myDID;
5325 if ((mydid.un.b.domain == 0) && (mydid.un.b.area == 0)) {
5326 return 0;
5327 }
5328
5329 matchdid.un.word = did;
5330 ndlpdid.un.word = ndlp->nlp_DID;
5331 if (matchdid.un.b.id == ndlpdid.un.b.id) {
5332 if ((mydid.un.b.domain == matchdid.un.b.domain) &&
5333 (mydid.un.b.area == matchdid.un.b.area)) {
5334 /* This code is supposed to match the ID
5335 * for a private loop device that is
5336 * connect to fl_port. But we need to
5337 * check that the port did not just go
5338 * from pt2pt to fabric or we could end
5339 * up matching ndlp->nlp_DID 000001 to
5340 * fabric DID 0x20101
5341 */
5342 if ((ndlpdid.un.b.domain == 0) &&
5343 (ndlpdid.un.b.area == 0)) {
5344 if (ndlpdid.un.b.id &&
5345 vport->phba->fc_topology ==
5346 LPFC_TOPOLOGY_LOOP)
5347 return 1;
5348 }
5349 return 0;
5350 }
5351
5352 matchdid.un.word = ndlp->nlp_DID;
5353 if ((mydid.un.b.domain == ndlpdid.un.b.domain) &&
5354 (mydid.un.b.area == ndlpdid.un.b.area)) {
5355 if ((matchdid.un.b.domain == 0) &&
5356 (matchdid.un.b.area == 0)) {
5357 if (matchdid.un.b.id)
5358 return 1;
5359 }
5360 }
5361 }
5362 return 0;
5363 }
5364
5365 /* Search for a nodelist entry */
5366 static struct lpfc_nodelist *
__lpfc_findnode_did(struct lpfc_vport * vport,uint32_t did)5367 __lpfc_findnode_did(struct lpfc_vport *vport, uint32_t did)
5368 {
5369 struct lpfc_nodelist *ndlp;
5370 uint32_t data1;
5371
5372 list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
5373 if (lpfc_matchdid(vport, ndlp, did)) {
5374 data1 = (((uint32_t)ndlp->nlp_state << 24) |
5375 ((uint32_t)ndlp->nlp_xri << 16) |
5376 ((uint32_t)ndlp->nlp_type << 8) |
5377 ((uint32_t)ndlp->nlp_usg_map & 0xff));
5378 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
5379 "0929 FIND node DID "
5380 "Data: x%px x%x x%x x%x x%x x%px\n",
5381 ndlp, ndlp->nlp_DID,
5382 ndlp->nlp_flag, data1, ndlp->nlp_rpi,
5383 ndlp->active_rrqs_xri_bitmap);
5384 return ndlp;
5385 }
5386 }
5387
5388 /* FIND node did <did> NOT FOUND */
5389 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
5390 "0932 FIND node did x%x NOT FOUND.\n", did);
5391 return NULL;
5392 }
5393
5394 struct lpfc_nodelist *
lpfc_findnode_did(struct lpfc_vport * vport,uint32_t did)5395 lpfc_findnode_did(struct lpfc_vport *vport, uint32_t did)
5396 {
5397 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
5398 struct lpfc_nodelist *ndlp;
5399 unsigned long iflags;
5400
5401 spin_lock_irqsave(shost->host_lock, iflags);
5402 ndlp = __lpfc_findnode_did(vport, did);
5403 spin_unlock_irqrestore(shost->host_lock, iflags);
5404 return ndlp;
5405 }
5406
5407 struct lpfc_nodelist *
lpfc_findnode_mapped(struct lpfc_vport * vport)5408 lpfc_findnode_mapped(struct lpfc_vport *vport)
5409 {
5410 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
5411 struct lpfc_nodelist *ndlp;
5412 uint32_t data1;
5413 unsigned long iflags;
5414
5415 spin_lock_irqsave(shost->host_lock, iflags);
5416
5417 list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
5418 if (ndlp->nlp_state == NLP_STE_UNMAPPED_NODE ||
5419 ndlp->nlp_state == NLP_STE_MAPPED_NODE) {
5420 data1 = (((uint32_t)ndlp->nlp_state << 24) |
5421 ((uint32_t)ndlp->nlp_xri << 16) |
5422 ((uint32_t)ndlp->nlp_type << 8) |
5423 ((uint32_t)ndlp->nlp_rpi & 0xff));
5424 spin_unlock_irqrestore(shost->host_lock, iflags);
5425 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
5426 "2025 FIND node DID "
5427 "Data: x%px x%x x%x x%x x%px\n",
5428 ndlp, ndlp->nlp_DID,
5429 ndlp->nlp_flag, data1,
5430 ndlp->active_rrqs_xri_bitmap);
5431 return ndlp;
5432 }
5433 }
5434 spin_unlock_irqrestore(shost->host_lock, iflags);
5435
5436 /* FIND node did <did> NOT FOUND */
5437 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
5438 "2026 FIND mapped did NOT FOUND.\n");
5439 return NULL;
5440 }
5441
5442 struct lpfc_nodelist *
lpfc_setup_disc_node(struct lpfc_vport * vport,uint32_t did)5443 lpfc_setup_disc_node(struct lpfc_vport *vport, uint32_t did)
5444 {
5445 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
5446 struct lpfc_nodelist *ndlp;
5447
5448 ndlp = lpfc_findnode_did(vport, did);
5449 if (!ndlp) {
5450 if (vport->phba->nvmet_support)
5451 return NULL;
5452 if ((vport->fc_flag & FC_RSCN_MODE) != 0 &&
5453 lpfc_rscn_payload_check(vport, did) == 0)
5454 return NULL;
5455 ndlp = lpfc_nlp_init(vport, did);
5456 if (!ndlp)
5457 return NULL;
5458 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
5459
5460 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
5461 "6453 Setup New Node 2B_DISC x%x "
5462 "Data:x%x x%x x%x\n",
5463 ndlp->nlp_DID, ndlp->nlp_flag,
5464 ndlp->nlp_state, vport->fc_flag);
5465
5466 spin_lock_irq(shost->host_lock);
5467 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
5468 spin_unlock_irq(shost->host_lock);
5469 return ndlp;
5470 } else if (!NLP_CHK_NODE_ACT(ndlp)) {
5471 if (vport->phba->nvmet_support)
5472 return NULL;
5473 ndlp = lpfc_enable_node(vport, ndlp, NLP_STE_NPR_NODE);
5474 if (!ndlp) {
5475 lpfc_printf_vlog(vport, KERN_WARNING, LOG_SLI,
5476 "0014 Could not enable ndlp\n");
5477 return NULL;
5478 }
5479 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
5480 "6454 Setup Enabled Node 2B_DISC x%x "
5481 "Data:x%x x%x x%x\n",
5482 ndlp->nlp_DID, ndlp->nlp_flag,
5483 ndlp->nlp_state, vport->fc_flag);
5484
5485 spin_lock_irq(shost->host_lock);
5486 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
5487 spin_unlock_irq(shost->host_lock);
5488 return ndlp;
5489 }
5490
5491 /* The NVME Target does not want to actively manage an rport.
5492 * The goal is to allow the target to reset its state and clear
5493 * pending IO in preparation for the initiator to recover.
5494 */
5495 if ((vport->fc_flag & FC_RSCN_MODE) &&
5496 !(vport->fc_flag & FC_NDISC_ACTIVE)) {
5497 if (lpfc_rscn_payload_check(vport, did)) {
5498
5499 /* Since this node is marked for discovery,
5500 * delay timeout is not needed.
5501 */
5502 lpfc_cancel_retry_delay_tmo(vport, ndlp);
5503
5504 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
5505 "6455 Setup RSCN Node 2B_DISC x%x "
5506 "Data:x%x x%x x%x\n",
5507 ndlp->nlp_DID, ndlp->nlp_flag,
5508 ndlp->nlp_state, vport->fc_flag);
5509
5510 /* NVME Target mode waits until rport is known to be
5511 * impacted by the RSCN before it transitions. No
5512 * active management - just go to NPR provided the
5513 * node had a valid login.
5514 */
5515 if (vport->phba->nvmet_support)
5516 return ndlp;
5517
5518 /* If we've already received a PLOGI from this NPort
5519 * we don't need to try to discover it again.
5520 */
5521 if (ndlp->nlp_flag & NLP_RCV_PLOGI &&
5522 !(ndlp->nlp_type &
5523 (NLP_FCP_TARGET | NLP_NVME_TARGET)))
5524 return NULL;
5525
5526 ndlp->nlp_prev_state = ndlp->nlp_state;
5527 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
5528
5529 spin_lock_irq(shost->host_lock);
5530 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
5531 spin_unlock_irq(shost->host_lock);
5532 } else {
5533 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
5534 "6456 Skip Setup RSCN Node x%x "
5535 "Data:x%x x%x x%x\n",
5536 ndlp->nlp_DID, ndlp->nlp_flag,
5537 ndlp->nlp_state, vport->fc_flag);
5538 ndlp = NULL;
5539 }
5540 } else {
5541 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
5542 "6457 Setup Active Node 2B_DISC x%x "
5543 "Data:x%x x%x x%x\n",
5544 ndlp->nlp_DID, ndlp->nlp_flag,
5545 ndlp->nlp_state, vport->fc_flag);
5546
5547 /* If the initiator received a PLOGI from this NPort or if the
5548 * initiator is already in the process of discovery on it,
5549 * there's no need to try to discover it again.
5550 */
5551 if (ndlp->nlp_state == NLP_STE_ADISC_ISSUE ||
5552 ndlp->nlp_state == NLP_STE_PLOGI_ISSUE ||
5553 (!vport->phba->nvmet_support &&
5554 ndlp->nlp_flag & NLP_RCV_PLOGI))
5555 return NULL;
5556
5557 if (vport->phba->nvmet_support)
5558 return ndlp;
5559
5560 /* Moving to NPR state clears unsolicited flags and
5561 * allows for rediscovery
5562 */
5563 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
5564
5565 spin_lock_irq(shost->host_lock);
5566 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
5567 spin_unlock_irq(shost->host_lock);
5568 }
5569 return ndlp;
5570 }
5571
5572 /* Build a list of nodes to discover based on the loopmap */
5573 void
lpfc_disc_list_loopmap(struct lpfc_vport * vport)5574 lpfc_disc_list_loopmap(struct lpfc_vport *vport)
5575 {
5576 struct lpfc_hba *phba = vport->phba;
5577 int j;
5578 uint32_t alpa, index;
5579
5580 if (!lpfc_is_link_up(phba))
5581 return;
5582
5583 if (phba->fc_topology != LPFC_TOPOLOGY_LOOP)
5584 return;
5585
5586 /* Check for loop map present or not */
5587 if (phba->alpa_map[0]) {
5588 for (j = 1; j <= phba->alpa_map[0]; j++) {
5589 alpa = phba->alpa_map[j];
5590 if (((vport->fc_myDID & 0xff) == alpa) || (alpa == 0))
5591 continue;
5592 lpfc_setup_disc_node(vport, alpa);
5593 }
5594 } else {
5595 /* No alpamap, so try all alpa's */
5596 for (j = 0; j < FC_MAXLOOP; j++) {
5597 /* If cfg_scan_down is set, start from highest
5598 * ALPA (0xef) to lowest (0x1).
5599 */
5600 if (vport->cfg_scan_down)
5601 index = j;
5602 else
5603 index = FC_MAXLOOP - j - 1;
5604 alpa = lpfcAlpaArray[index];
5605 if ((vport->fc_myDID & 0xff) == alpa)
5606 continue;
5607 lpfc_setup_disc_node(vport, alpa);
5608 }
5609 }
5610 return;
5611 }
5612
5613 /* SLI3 only */
5614 void
lpfc_issue_clear_la(struct lpfc_hba * phba,struct lpfc_vport * vport)5615 lpfc_issue_clear_la(struct lpfc_hba *phba, struct lpfc_vport *vport)
5616 {
5617 LPFC_MBOXQ_t *mbox;
5618 struct lpfc_sli *psli = &phba->sli;
5619 struct lpfc_sli_ring *extra_ring = &psli->sli3_ring[LPFC_EXTRA_RING];
5620 struct lpfc_sli_ring *fcp_ring = &psli->sli3_ring[LPFC_FCP_RING];
5621 int rc;
5622
5623 /*
5624 * if it's not a physical port or if we already send
5625 * clear_la then don't send it.
5626 */
5627 if ((phba->link_state >= LPFC_CLEAR_LA) ||
5628 (vport->port_type != LPFC_PHYSICAL_PORT) ||
5629 (phba->sli_rev == LPFC_SLI_REV4))
5630 return;
5631
5632 /* Link up discovery */
5633 if ((mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL)) != NULL) {
5634 phba->link_state = LPFC_CLEAR_LA;
5635 lpfc_clear_la(phba, mbox);
5636 mbox->mbox_cmpl = lpfc_mbx_cmpl_clear_la;
5637 mbox->vport = vport;
5638 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
5639 if (rc == MBX_NOT_FINISHED) {
5640 mempool_free(mbox, phba->mbox_mem_pool);
5641 lpfc_disc_flush_list(vport);
5642 extra_ring->flag &= ~LPFC_STOP_IOCB_EVENT;
5643 fcp_ring->flag &= ~LPFC_STOP_IOCB_EVENT;
5644 phba->link_state = LPFC_HBA_ERROR;
5645 }
5646 }
5647 }
5648
5649 /* Reg_vpi to tell firmware to resume normal operations */
5650 void
lpfc_issue_reg_vpi(struct lpfc_hba * phba,struct lpfc_vport * vport)5651 lpfc_issue_reg_vpi(struct lpfc_hba *phba, struct lpfc_vport *vport)
5652 {
5653 LPFC_MBOXQ_t *regvpimbox;
5654
5655 regvpimbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
5656 if (regvpimbox) {
5657 lpfc_reg_vpi(vport, regvpimbox);
5658 regvpimbox->mbox_cmpl = lpfc_mbx_cmpl_reg_vpi;
5659 regvpimbox->vport = vport;
5660 if (lpfc_sli_issue_mbox(phba, regvpimbox, MBX_NOWAIT)
5661 == MBX_NOT_FINISHED) {
5662 mempool_free(regvpimbox, phba->mbox_mem_pool);
5663 }
5664 }
5665 }
5666
5667 /* Start Link up / RSCN discovery on NPR nodes */
5668 void
lpfc_disc_start(struct lpfc_vport * vport)5669 lpfc_disc_start(struct lpfc_vport *vport)
5670 {
5671 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
5672 struct lpfc_hba *phba = vport->phba;
5673 uint32_t num_sent;
5674 uint32_t clear_la_pending;
5675
5676 if (!lpfc_is_link_up(phba)) {
5677 lpfc_printf_vlog(vport, KERN_INFO, LOG_SLI,
5678 "3315 Link is not up %x\n",
5679 phba->link_state);
5680 return;
5681 }
5682
5683 if (phba->link_state == LPFC_CLEAR_LA)
5684 clear_la_pending = 1;
5685 else
5686 clear_la_pending = 0;
5687
5688 if (vport->port_state < LPFC_VPORT_READY)
5689 vport->port_state = LPFC_DISC_AUTH;
5690
5691 lpfc_set_disctmo(vport);
5692
5693 vport->fc_prevDID = vport->fc_myDID;
5694 vport->num_disc_nodes = 0;
5695
5696 /* Start Discovery state <hba_state> */
5697 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
5698 "0202 Start Discovery port state x%x "
5699 "flg x%x Data: x%x x%x x%x\n",
5700 vport->port_state, vport->fc_flag, vport->fc_plogi_cnt,
5701 vport->fc_adisc_cnt, vport->fc_npr_cnt);
5702
5703 /* First do ADISCs - if any */
5704 num_sent = lpfc_els_disc_adisc(vport);
5705
5706 if (num_sent)
5707 return;
5708
5709 /* Register the VPI for SLI3, NPIV only. */
5710 if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
5711 !(vport->fc_flag & FC_PT2PT) &&
5712 !(vport->fc_flag & FC_RSCN_MODE) &&
5713 (phba->sli_rev < LPFC_SLI_REV4)) {
5714 lpfc_issue_clear_la(phba, vport);
5715 lpfc_issue_reg_vpi(phba, vport);
5716 return;
5717 }
5718
5719 /*
5720 * For SLI2, we need to set port_state to READY and continue
5721 * discovery.
5722 */
5723 if (vport->port_state < LPFC_VPORT_READY && !clear_la_pending) {
5724 /* If we get here, there is nothing to ADISC */
5725 lpfc_issue_clear_la(phba, vport);
5726
5727 if (!(vport->fc_flag & FC_ABORT_DISCOVERY)) {
5728 vport->num_disc_nodes = 0;
5729 /* go thru NPR nodes and issue ELS PLOGIs */
5730 if (vport->fc_npr_cnt)
5731 lpfc_els_disc_plogi(vport);
5732
5733 if (!vport->num_disc_nodes) {
5734 spin_lock_irq(shost->host_lock);
5735 vport->fc_flag &= ~FC_NDISC_ACTIVE;
5736 spin_unlock_irq(shost->host_lock);
5737 lpfc_can_disctmo(vport);
5738 }
5739 }
5740 vport->port_state = LPFC_VPORT_READY;
5741 } else {
5742 /* Next do PLOGIs - if any */
5743 num_sent = lpfc_els_disc_plogi(vport);
5744
5745 if (num_sent)
5746 return;
5747
5748 if (vport->fc_flag & FC_RSCN_MODE) {
5749 /* Check to see if more RSCNs came in while we
5750 * were processing this one.
5751 */
5752 if ((vport->fc_rscn_id_cnt == 0) &&
5753 (!(vport->fc_flag & FC_RSCN_DISCOVERY))) {
5754 spin_lock_irq(shost->host_lock);
5755 vport->fc_flag &= ~FC_RSCN_MODE;
5756 spin_unlock_irq(shost->host_lock);
5757 lpfc_can_disctmo(vport);
5758 } else
5759 lpfc_els_handle_rscn(vport);
5760 }
5761 }
5762 return;
5763 }
5764
5765 /*
5766 * Ignore completion for all IOCBs on tx and txcmpl queue for ELS
5767 * ring the match the sppecified nodelist.
5768 */
5769 static void
lpfc_free_tx(struct lpfc_hba * phba,struct lpfc_nodelist * ndlp)5770 lpfc_free_tx(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
5771 {
5772 LIST_HEAD(completions);
5773 IOCB_t *icmd;
5774 struct lpfc_iocbq *iocb, *next_iocb;
5775 struct lpfc_sli_ring *pring;
5776
5777 pring = lpfc_phba_elsring(phba);
5778 if (unlikely(!pring))
5779 return;
5780
5781 /* Error matching iocb on txq or txcmplq
5782 * First check the txq.
5783 */
5784 spin_lock_irq(&phba->hbalock);
5785 list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) {
5786 if (iocb->context1 != ndlp) {
5787 continue;
5788 }
5789 icmd = &iocb->iocb;
5790 if ((icmd->ulpCommand == CMD_ELS_REQUEST64_CR) ||
5791 (icmd->ulpCommand == CMD_XMIT_ELS_RSP64_CX)) {
5792
5793 list_move_tail(&iocb->list, &completions);
5794 }
5795 }
5796
5797 /* Next check the txcmplq */
5798 list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq, list) {
5799 if (iocb->context1 != ndlp) {
5800 continue;
5801 }
5802 icmd = &iocb->iocb;
5803 if (icmd->ulpCommand == CMD_ELS_REQUEST64_CR ||
5804 icmd->ulpCommand == CMD_XMIT_ELS_RSP64_CX) {
5805 lpfc_sli_issue_abort_iotag(phba, pring, iocb);
5806 }
5807 }
5808 spin_unlock_irq(&phba->hbalock);
5809
5810 /* Cancel all the IOCBs from the completions list */
5811 lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT,
5812 IOERR_SLI_ABORTED);
5813 }
5814
5815 static void
lpfc_disc_flush_list(struct lpfc_vport * vport)5816 lpfc_disc_flush_list(struct lpfc_vport *vport)
5817 {
5818 struct lpfc_nodelist *ndlp, *next_ndlp;
5819 struct lpfc_hba *phba = vport->phba;
5820
5821 if (vport->fc_plogi_cnt || vport->fc_adisc_cnt) {
5822 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes,
5823 nlp_listp) {
5824 if (!NLP_CHK_NODE_ACT(ndlp))
5825 continue;
5826 if (ndlp->nlp_state == NLP_STE_PLOGI_ISSUE ||
5827 ndlp->nlp_state == NLP_STE_ADISC_ISSUE) {
5828 lpfc_free_tx(phba, ndlp);
5829 }
5830 }
5831 }
5832 }
5833
5834 void
lpfc_cleanup_discovery_resources(struct lpfc_vport * vport)5835 lpfc_cleanup_discovery_resources(struct lpfc_vport *vport)
5836 {
5837 lpfc_els_flush_rscn(vport);
5838 lpfc_els_flush_cmd(vport);
5839 lpfc_disc_flush_list(vport);
5840 }
5841
5842 /*****************************************************************************/
5843 /*
5844 * NAME: lpfc_disc_timeout
5845 *
5846 * FUNCTION: Fibre Channel driver discovery timeout routine.
5847 *
5848 * EXECUTION ENVIRONMENT: interrupt only
5849 *
5850 * CALLED FROM:
5851 * Timer function
5852 *
5853 * RETURNS:
5854 * none
5855 */
5856 /*****************************************************************************/
5857 void
lpfc_disc_timeout(struct timer_list * t)5858 lpfc_disc_timeout(struct timer_list *t)
5859 {
5860 struct lpfc_vport *vport = from_timer(vport, t, fc_disctmo);
5861 struct lpfc_hba *phba = vport->phba;
5862 uint32_t tmo_posted;
5863 unsigned long flags = 0;
5864
5865 if (unlikely(!phba))
5866 return;
5867
5868 spin_lock_irqsave(&vport->work_port_lock, flags);
5869 tmo_posted = vport->work_port_events & WORKER_DISC_TMO;
5870 if (!tmo_posted)
5871 vport->work_port_events |= WORKER_DISC_TMO;
5872 spin_unlock_irqrestore(&vport->work_port_lock, flags);
5873
5874 if (!tmo_posted)
5875 lpfc_worker_wake_up(phba);
5876 return;
5877 }
5878
5879 static void
lpfc_disc_timeout_handler(struct lpfc_vport * vport)5880 lpfc_disc_timeout_handler(struct lpfc_vport *vport)
5881 {
5882 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
5883 struct lpfc_hba *phba = vport->phba;
5884 struct lpfc_sli *psli = &phba->sli;
5885 struct lpfc_nodelist *ndlp, *next_ndlp;
5886 LPFC_MBOXQ_t *initlinkmbox;
5887 int rc, clrlaerr = 0;
5888
5889 if (!(vport->fc_flag & FC_DISC_TMO))
5890 return;
5891
5892 spin_lock_irq(shost->host_lock);
5893 vport->fc_flag &= ~FC_DISC_TMO;
5894 spin_unlock_irq(shost->host_lock);
5895
5896 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
5897 "disc timeout: state:x%x rtry:x%x flg:x%x",
5898 vport->port_state, vport->fc_ns_retry, vport->fc_flag);
5899
5900 switch (vport->port_state) {
5901
5902 case LPFC_LOCAL_CFG_LINK:
5903 /*
5904 * port_state is identically LPFC_LOCAL_CFG_LINK while
5905 * waiting for FAN timeout
5906 */
5907 lpfc_printf_vlog(vport, KERN_WARNING, LOG_DISCOVERY,
5908 "0221 FAN timeout\n");
5909
5910 /* Start discovery by sending FLOGI, clean up old rpis */
5911 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes,
5912 nlp_listp) {
5913 if (!NLP_CHK_NODE_ACT(ndlp))
5914 continue;
5915 if (ndlp->nlp_state != NLP_STE_NPR_NODE)
5916 continue;
5917 if (ndlp->nlp_type & NLP_FABRIC) {
5918 /* Clean up the ndlp on Fabric connections */
5919 lpfc_drop_node(vport, ndlp);
5920
5921 } else if (!(ndlp->nlp_flag & NLP_NPR_ADISC)) {
5922 /* Fail outstanding IO now since device
5923 * is marked for PLOGI.
5924 */
5925 lpfc_unreg_rpi(vport, ndlp);
5926 }
5927 }
5928 if (vport->port_state != LPFC_FLOGI) {
5929 if (phba->sli_rev <= LPFC_SLI_REV3)
5930 lpfc_initial_flogi(vport);
5931 else
5932 lpfc_issue_init_vfi(vport);
5933 return;
5934 }
5935 break;
5936
5937 case LPFC_FDISC:
5938 case LPFC_FLOGI:
5939 /* port_state is identically LPFC_FLOGI while waiting for FLOGI cmpl */
5940 /* Initial FLOGI timeout */
5941 lpfc_printf_vlog(vport, KERN_ERR,
5942 LOG_TRACE_EVENT,
5943 "0222 Initial %s timeout\n",
5944 vport->vpi ? "FDISC" : "FLOGI");
5945
5946 /* Assume no Fabric and go on with discovery.
5947 * Check for outstanding ELS FLOGI to abort.
5948 */
5949
5950 /* FLOGI failed, so just use loop map to make discovery list */
5951 lpfc_disc_list_loopmap(vport);
5952
5953 /* Start discovery */
5954 lpfc_disc_start(vport);
5955 break;
5956
5957 case LPFC_FABRIC_CFG_LINK:
5958 /* hba_state is identically LPFC_FABRIC_CFG_LINK while waiting for
5959 NameServer login */
5960 lpfc_printf_vlog(vport, KERN_ERR,
5961 LOG_TRACE_EVENT,
5962 "0223 Timeout while waiting for "
5963 "NameServer login\n");
5964 /* Next look for NameServer ndlp */
5965 ndlp = lpfc_findnode_did(vport, NameServer_DID);
5966 if (ndlp && NLP_CHK_NODE_ACT(ndlp))
5967 lpfc_els_abort(phba, ndlp);
5968
5969 /* ReStart discovery */
5970 goto restart_disc;
5971
5972 case LPFC_NS_QRY:
5973 /* Check for wait for NameServer Rsp timeout */
5974 lpfc_printf_vlog(vport, KERN_ERR,
5975 LOG_TRACE_EVENT,
5976 "0224 NameServer Query timeout "
5977 "Data: x%x x%x\n",
5978 vport->fc_ns_retry, LPFC_MAX_NS_RETRY);
5979
5980 if (vport->fc_ns_retry < LPFC_MAX_NS_RETRY) {
5981 /* Try it one more time */
5982 vport->fc_ns_retry++;
5983 vport->gidft_inp = 0;
5984 rc = lpfc_issue_gidft(vport);
5985 if (rc == 0)
5986 break;
5987 }
5988 vport->fc_ns_retry = 0;
5989
5990 restart_disc:
5991 /*
5992 * Discovery is over.
5993 * set port_state to PORT_READY if SLI2.
5994 * cmpl_reg_vpi will set port_state to READY for SLI3.
5995 */
5996 if (phba->sli_rev < LPFC_SLI_REV4) {
5997 if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)
5998 lpfc_issue_reg_vpi(phba, vport);
5999 else {
6000 lpfc_issue_clear_la(phba, vport);
6001 vport->port_state = LPFC_VPORT_READY;
6002 }
6003 }
6004
6005 /* Setup and issue mailbox INITIALIZE LINK command */
6006 initlinkmbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
6007 if (!initlinkmbox) {
6008 lpfc_printf_vlog(vport, KERN_ERR,
6009 LOG_TRACE_EVENT,
6010 "0206 Device Discovery "
6011 "completion error\n");
6012 phba->link_state = LPFC_HBA_ERROR;
6013 break;
6014 }
6015
6016 lpfc_linkdown(phba);
6017 lpfc_init_link(phba, initlinkmbox, phba->cfg_topology,
6018 phba->cfg_link_speed);
6019 initlinkmbox->u.mb.un.varInitLnk.lipsr_AL_PA = 0;
6020 initlinkmbox->vport = vport;
6021 initlinkmbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
6022 rc = lpfc_sli_issue_mbox(phba, initlinkmbox, MBX_NOWAIT);
6023 lpfc_set_loopback_flag(phba);
6024 if (rc == MBX_NOT_FINISHED)
6025 mempool_free(initlinkmbox, phba->mbox_mem_pool);
6026
6027 break;
6028
6029 case LPFC_DISC_AUTH:
6030 /* Node Authentication timeout */
6031 lpfc_printf_vlog(vport, KERN_ERR,
6032 LOG_TRACE_EVENT,
6033 "0227 Node Authentication timeout\n");
6034 lpfc_disc_flush_list(vport);
6035
6036 /*
6037 * set port_state to PORT_READY if SLI2.
6038 * cmpl_reg_vpi will set port_state to READY for SLI3.
6039 */
6040 if (phba->sli_rev < LPFC_SLI_REV4) {
6041 if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)
6042 lpfc_issue_reg_vpi(phba, vport);
6043 else { /* NPIV Not enabled */
6044 lpfc_issue_clear_la(phba, vport);
6045 vport->port_state = LPFC_VPORT_READY;
6046 }
6047 }
6048 break;
6049
6050 case LPFC_VPORT_READY:
6051 if (vport->fc_flag & FC_RSCN_MODE) {
6052 lpfc_printf_vlog(vport, KERN_ERR,
6053 LOG_TRACE_EVENT,
6054 "0231 RSCN timeout Data: x%x "
6055 "x%x\n",
6056 vport->fc_ns_retry, LPFC_MAX_NS_RETRY);
6057
6058 /* Cleanup any outstanding ELS commands */
6059 lpfc_els_flush_cmd(vport);
6060
6061 lpfc_els_flush_rscn(vport);
6062 lpfc_disc_flush_list(vport);
6063 }
6064 break;
6065
6066 default:
6067 lpfc_printf_vlog(vport, KERN_ERR,
6068 LOG_TRACE_EVENT,
6069 "0273 Unexpected discovery timeout, "
6070 "vport State x%x\n", vport->port_state);
6071 break;
6072 }
6073
6074 switch (phba->link_state) {
6075 case LPFC_CLEAR_LA:
6076 /* CLEAR LA timeout */
6077 lpfc_printf_vlog(vport, KERN_ERR,
6078 LOG_TRACE_EVENT,
6079 "0228 CLEAR LA timeout\n");
6080 clrlaerr = 1;
6081 break;
6082
6083 case LPFC_LINK_UP:
6084 lpfc_issue_clear_la(phba, vport);
6085 fallthrough;
6086 case LPFC_LINK_UNKNOWN:
6087 case LPFC_WARM_START:
6088 case LPFC_INIT_START:
6089 case LPFC_INIT_MBX_CMDS:
6090 case LPFC_LINK_DOWN:
6091 case LPFC_HBA_ERROR:
6092 lpfc_printf_vlog(vport, KERN_ERR,
6093 LOG_TRACE_EVENT,
6094 "0230 Unexpected timeout, hba link "
6095 "state x%x\n", phba->link_state);
6096 clrlaerr = 1;
6097 break;
6098
6099 case LPFC_HBA_READY:
6100 break;
6101 }
6102
6103 if (clrlaerr) {
6104 lpfc_disc_flush_list(vport);
6105 if (phba->sli_rev != LPFC_SLI_REV4) {
6106 psli->sli3_ring[(LPFC_EXTRA_RING)].flag &=
6107 ~LPFC_STOP_IOCB_EVENT;
6108 psli->sli3_ring[LPFC_FCP_RING].flag &=
6109 ~LPFC_STOP_IOCB_EVENT;
6110 }
6111 vport->port_state = LPFC_VPORT_READY;
6112 }
6113 return;
6114 }
6115
6116 /*
6117 * This routine handles processing a NameServer REG_LOGIN mailbox
6118 * command upon completion. It is setup in the LPFC_MBOXQ
6119 * as the completion routine when the command is
6120 * handed off to the SLI layer.
6121 */
6122 void
lpfc_mbx_cmpl_fdmi_reg_login(struct lpfc_hba * phba,LPFC_MBOXQ_t * pmb)6123 lpfc_mbx_cmpl_fdmi_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
6124 {
6125 MAILBOX_t *mb = &pmb->u.mb;
6126 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *)(pmb->ctx_buf);
6127 struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *)pmb->ctx_ndlp;
6128 struct lpfc_vport *vport = pmb->vport;
6129
6130 pmb->ctx_buf = NULL;
6131 pmb->ctx_ndlp = NULL;
6132
6133 if (phba->sli_rev < LPFC_SLI_REV4)
6134 ndlp->nlp_rpi = mb->un.varWords[0];
6135 ndlp->nlp_flag |= NLP_RPI_REGISTERED;
6136 ndlp->nlp_type |= NLP_FABRIC;
6137 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
6138 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE | LOG_DISCOVERY,
6139 "0004 rpi:%x DID:%x flg:%x %d map:%x x%px\n",
6140 ndlp->nlp_rpi, ndlp->nlp_DID, ndlp->nlp_flag,
6141 kref_read(&ndlp->kref),
6142 ndlp->nlp_usg_map, ndlp);
6143 /*
6144 * Start issuing Fabric-Device Management Interface (FDMI) command to
6145 * 0xfffffa (FDMI well known port).
6146 * DHBA -> DPRT -> RHBA -> RPA (physical port)
6147 * DPRT -> RPRT (vports)
6148 */
6149 if (vport->port_type == LPFC_PHYSICAL_PORT)
6150 lpfc_fdmi_cmd(vport, ndlp, SLI_MGMT_DHBA, 0);
6151 else
6152 lpfc_fdmi_cmd(vport, ndlp, SLI_MGMT_DPRT, 0);
6153
6154
6155 /* decrement the node reference count held for this callback
6156 * function.
6157 */
6158 lpfc_nlp_put(ndlp);
6159 lpfc_mbuf_free(phba, mp->virt, mp->phys);
6160 kfree(mp);
6161 mempool_free(pmb, phba->mbox_mem_pool);
6162
6163 return;
6164 }
6165
6166 static int
lpfc_filter_by_rpi(struct lpfc_nodelist * ndlp,void * param)6167 lpfc_filter_by_rpi(struct lpfc_nodelist *ndlp, void *param)
6168 {
6169 uint16_t *rpi = param;
6170
6171 /* check for active node */
6172 if (!NLP_CHK_NODE_ACT(ndlp))
6173 return 0;
6174
6175 return ndlp->nlp_rpi == *rpi;
6176 }
6177
6178 static int
lpfc_filter_by_wwpn(struct lpfc_nodelist * ndlp,void * param)6179 lpfc_filter_by_wwpn(struct lpfc_nodelist *ndlp, void *param)
6180 {
6181 return memcmp(&ndlp->nlp_portname, param,
6182 sizeof(ndlp->nlp_portname)) == 0;
6183 }
6184
6185 static struct lpfc_nodelist *
__lpfc_find_node(struct lpfc_vport * vport,node_filter filter,void * param)6186 __lpfc_find_node(struct lpfc_vport *vport, node_filter filter, void *param)
6187 {
6188 struct lpfc_nodelist *ndlp;
6189
6190 list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
6191 if (filter(ndlp, param)) {
6192 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
6193 "3185 FIND node filter %ps DID "
6194 "ndlp x%px did x%x flg x%x st x%x "
6195 "xri x%x type x%x rpi x%x\n",
6196 filter, ndlp, ndlp->nlp_DID,
6197 ndlp->nlp_flag, ndlp->nlp_state,
6198 ndlp->nlp_xri, ndlp->nlp_type,
6199 ndlp->nlp_rpi);
6200 return ndlp;
6201 }
6202 }
6203 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
6204 "3186 FIND node filter %ps NOT FOUND.\n", filter);
6205 return NULL;
6206 }
6207
6208 /*
6209 * This routine looks up the ndlp lists for the given RPI. If rpi found it
6210 * returns the node list element pointer else return NULL.
6211 */
6212 struct lpfc_nodelist *
__lpfc_findnode_rpi(struct lpfc_vport * vport,uint16_t rpi)6213 __lpfc_findnode_rpi(struct lpfc_vport *vport, uint16_t rpi)
6214 {
6215 return __lpfc_find_node(vport, lpfc_filter_by_rpi, &rpi);
6216 }
6217
6218 /*
6219 * This routine looks up the ndlp lists for the given WWPN. If WWPN found it
6220 * returns the node element list pointer else return NULL.
6221 */
6222 struct lpfc_nodelist *
lpfc_findnode_wwpn(struct lpfc_vport * vport,struct lpfc_name * wwpn)6223 lpfc_findnode_wwpn(struct lpfc_vport *vport, struct lpfc_name *wwpn)
6224 {
6225 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
6226 struct lpfc_nodelist *ndlp;
6227
6228 spin_lock_irq(shost->host_lock);
6229 ndlp = __lpfc_find_node(vport, lpfc_filter_by_wwpn, wwpn);
6230 spin_unlock_irq(shost->host_lock);
6231 return ndlp;
6232 }
6233
6234 /*
6235 * This routine looks up the ndlp lists for the given RPI. If the rpi
6236 * is found, the routine returns the node element list pointer else
6237 * return NULL.
6238 */
6239 struct lpfc_nodelist *
lpfc_findnode_rpi(struct lpfc_vport * vport,uint16_t rpi)6240 lpfc_findnode_rpi(struct lpfc_vport *vport, uint16_t rpi)
6241 {
6242 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
6243 struct lpfc_nodelist *ndlp;
6244 unsigned long flags;
6245
6246 spin_lock_irqsave(shost->host_lock, flags);
6247 ndlp = __lpfc_findnode_rpi(vport, rpi);
6248 spin_unlock_irqrestore(shost->host_lock, flags);
6249 return ndlp;
6250 }
6251
6252 /**
6253 * lpfc_find_vport_by_vpid - Find a vport on a HBA through vport identifier
6254 * @phba: pointer to lpfc hba data structure.
6255 * @vpi: the physical host virtual N_Port identifier.
6256 *
6257 * This routine finds a vport on a HBA (referred by @phba) through a
6258 * @vpi. The function walks the HBA's vport list and returns the address
6259 * of the vport with the matching @vpi.
6260 *
6261 * Return code
6262 * NULL - No vport with the matching @vpi found
6263 * Otherwise - Address to the vport with the matching @vpi.
6264 **/
6265 struct lpfc_vport *
lpfc_find_vport_by_vpid(struct lpfc_hba * phba,uint16_t vpi)6266 lpfc_find_vport_by_vpid(struct lpfc_hba *phba, uint16_t vpi)
6267 {
6268 struct lpfc_vport *vport;
6269 unsigned long flags;
6270 int i = 0;
6271
6272 /* The physical ports are always vpi 0 - translate is unnecessary. */
6273 if (vpi > 0) {
6274 /*
6275 * Translate the physical vpi to the logical vpi. The
6276 * vport stores the logical vpi.
6277 */
6278 for (i = 0; i < phba->max_vpi; i++) {
6279 if (vpi == phba->vpi_ids[i])
6280 break;
6281 }
6282
6283 if (i >= phba->max_vpi) {
6284 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
6285 "2936 Could not find Vport mapped "
6286 "to vpi %d\n", vpi);
6287 return NULL;
6288 }
6289 }
6290
6291 spin_lock_irqsave(&phba->port_list_lock, flags);
6292 list_for_each_entry(vport, &phba->port_list, listentry) {
6293 if (vport->vpi == i) {
6294 spin_unlock_irqrestore(&phba->port_list_lock, flags);
6295 return vport;
6296 }
6297 }
6298 spin_unlock_irqrestore(&phba->port_list_lock, flags);
6299 return NULL;
6300 }
6301
6302 struct lpfc_nodelist *
lpfc_nlp_init(struct lpfc_vport * vport,uint32_t did)6303 lpfc_nlp_init(struct lpfc_vport *vport, uint32_t did)
6304 {
6305 struct lpfc_nodelist *ndlp;
6306 int rpi = LPFC_RPI_ALLOC_ERROR;
6307
6308 if (vport->phba->sli_rev == LPFC_SLI_REV4) {
6309 rpi = lpfc_sli4_alloc_rpi(vport->phba);
6310 if (rpi == LPFC_RPI_ALLOC_ERROR)
6311 return NULL;
6312 }
6313
6314 ndlp = mempool_alloc(vport->phba->nlp_mem_pool, GFP_KERNEL);
6315 if (!ndlp) {
6316 if (vport->phba->sli_rev == LPFC_SLI_REV4)
6317 lpfc_sli4_free_rpi(vport->phba, rpi);
6318 return NULL;
6319 }
6320
6321 memset(ndlp, 0, sizeof (struct lpfc_nodelist));
6322
6323 lpfc_initialize_node(vport, ndlp, did);
6324 INIT_LIST_HEAD(&ndlp->nlp_listp);
6325 if (vport->phba->sli_rev == LPFC_SLI_REV4) {
6326 ndlp->nlp_rpi = rpi;
6327 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE | LOG_DISCOVERY,
6328 "0007 Init New ndlp x%px, rpi:x%x DID:%x "
6329 "flg:x%x refcnt:%d map:x%x\n",
6330 ndlp, ndlp->nlp_rpi, ndlp->nlp_DID,
6331 ndlp->nlp_flag, kref_read(&ndlp->kref),
6332 ndlp->nlp_usg_map);
6333
6334 ndlp->active_rrqs_xri_bitmap =
6335 mempool_alloc(vport->phba->active_rrq_pool,
6336 GFP_KERNEL);
6337 if (ndlp->active_rrqs_xri_bitmap)
6338 memset(ndlp->active_rrqs_xri_bitmap, 0,
6339 ndlp->phba->cfg_rrq_xri_bitmap_sz);
6340 }
6341
6342
6343
6344 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE,
6345 "node init: did:x%x",
6346 ndlp->nlp_DID, 0, 0);
6347
6348 return ndlp;
6349 }
6350
6351 /* This routine releases all resources associated with a specifc NPort's ndlp
6352 * and mempool_free's the nodelist.
6353 */
6354 static void
lpfc_nlp_release(struct kref * kref)6355 lpfc_nlp_release(struct kref *kref)
6356 {
6357 struct lpfc_hba *phba;
6358 unsigned long flags;
6359 struct lpfc_nodelist *ndlp = container_of(kref, struct lpfc_nodelist,
6360 kref);
6361
6362 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
6363 "node release: did:x%x flg:x%x type:x%x",
6364 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type);
6365
6366 lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_NODE,
6367 "0279 %s: ndlp:x%px did %x "
6368 "usgmap:x%x refcnt:%d rpi:%x\n",
6369 __func__,
6370 (void *)ndlp, ndlp->nlp_DID, ndlp->nlp_usg_map,
6371 kref_read(&ndlp->kref), ndlp->nlp_rpi);
6372
6373 /* remove ndlp from action. */
6374 lpfc_nlp_remove(ndlp->vport, ndlp);
6375
6376 /* clear the ndlp active flag for all release cases */
6377 phba = ndlp->phba;
6378 spin_lock_irqsave(&phba->ndlp_lock, flags);
6379 NLP_CLR_NODE_ACT(ndlp);
6380 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
6381
6382 /* free ndlp memory for final ndlp release */
6383 if (NLP_CHK_FREE_REQ(ndlp)) {
6384 kfree(ndlp->lat_data);
6385 if (phba->sli_rev == LPFC_SLI_REV4)
6386 mempool_free(ndlp->active_rrqs_xri_bitmap,
6387 ndlp->phba->active_rrq_pool);
6388 mempool_free(ndlp, ndlp->phba->nlp_mem_pool);
6389 }
6390 }
6391
6392 /* This routine bumps the reference count for a ndlp structure to ensure
6393 * that one discovery thread won't free a ndlp while another discovery thread
6394 * is using it.
6395 */
6396 struct lpfc_nodelist *
lpfc_nlp_get(struct lpfc_nodelist * ndlp)6397 lpfc_nlp_get(struct lpfc_nodelist *ndlp)
6398 {
6399 struct lpfc_hba *phba;
6400 unsigned long flags;
6401
6402 if (ndlp) {
6403 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
6404 "node get: did:x%x flg:x%x refcnt:x%x",
6405 ndlp->nlp_DID, ndlp->nlp_flag,
6406 kref_read(&ndlp->kref));
6407 /* The check of ndlp usage to prevent incrementing the
6408 * ndlp reference count that is in the process of being
6409 * released.
6410 */
6411 phba = ndlp->phba;
6412 spin_lock_irqsave(&phba->ndlp_lock, flags);
6413 if (!NLP_CHK_NODE_ACT(ndlp) || NLP_CHK_FREE_ACK(ndlp)) {
6414 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
6415 lpfc_printf_vlog(ndlp->vport, KERN_WARNING, LOG_NODE,
6416 "0276 %s: ndlp:x%px "
6417 "usgmap:x%x refcnt:%d\n",
6418 __func__, (void *)ndlp, ndlp->nlp_usg_map,
6419 kref_read(&ndlp->kref));
6420 return NULL;
6421 } else
6422 kref_get(&ndlp->kref);
6423 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
6424 }
6425 return ndlp;
6426 }
6427
6428 /* This routine decrements the reference count for a ndlp structure. If the
6429 * count goes to 0, this indicates the the associated nodelist should be
6430 * freed. Returning 1 indicates the ndlp resource has been released; on the
6431 * other hand, returning 0 indicates the ndlp resource has not been released
6432 * yet.
6433 */
6434 int
lpfc_nlp_put(struct lpfc_nodelist * ndlp)6435 lpfc_nlp_put(struct lpfc_nodelist *ndlp)
6436 {
6437 struct lpfc_hba *phba;
6438 unsigned long flags;
6439
6440 if (!ndlp)
6441 return 1;
6442
6443 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
6444 "node put: did:x%x flg:x%x refcnt:x%x",
6445 ndlp->nlp_DID, ndlp->nlp_flag,
6446 kref_read(&ndlp->kref));
6447 phba = ndlp->phba;
6448 spin_lock_irqsave(&phba->ndlp_lock, flags);
6449 /* Check the ndlp memory free acknowledge flag to avoid the
6450 * possible race condition that kref_put got invoked again
6451 * after previous one has done ndlp memory free.
6452 */
6453 if (NLP_CHK_FREE_ACK(ndlp)) {
6454 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
6455 lpfc_printf_vlog(ndlp->vport, KERN_WARNING, LOG_NODE,
6456 "0274 %s: ndlp:x%px "
6457 "usgmap:x%x refcnt:%d\n",
6458 __func__, (void *)ndlp, ndlp->nlp_usg_map,
6459 kref_read(&ndlp->kref));
6460 return 1;
6461 }
6462 /* Check the ndlp inactivate log flag to avoid the possible
6463 * race condition that kref_put got invoked again after ndlp
6464 * is already in inactivating state.
6465 */
6466 if (NLP_CHK_IACT_REQ(ndlp)) {
6467 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
6468 lpfc_printf_vlog(ndlp->vport, KERN_WARNING, LOG_NODE,
6469 "0275 %s: ndlp:x%px "
6470 "usgmap:x%x refcnt:%d\n",
6471 __func__, (void *)ndlp, ndlp->nlp_usg_map,
6472 kref_read(&ndlp->kref));
6473 return 1;
6474 }
6475 /* For last put, mark the ndlp usage flags to make sure no
6476 * other kref_get and kref_put on the same ndlp shall get
6477 * in between the process when the final kref_put has been
6478 * invoked on this ndlp.
6479 */
6480 if (kref_read(&ndlp->kref) == 1) {
6481 /* Indicate ndlp is put to inactive state. */
6482 NLP_SET_IACT_REQ(ndlp);
6483 /* Acknowledge ndlp memory free has been seen. */
6484 if (NLP_CHK_FREE_REQ(ndlp))
6485 NLP_SET_FREE_ACK(ndlp);
6486 }
6487 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
6488 /* Note, the kref_put returns 1 when decrementing a reference
6489 * count that was 1, it invokes the release callback function,
6490 * but it still left the reference count as 1 (not actually
6491 * performs the last decrementation). Otherwise, it actually
6492 * decrements the reference count and returns 0.
6493 */
6494 return kref_put(&ndlp->kref, lpfc_nlp_release);
6495 }
6496
6497 /* This routine free's the specified nodelist if it is not in use
6498 * by any other discovery thread. This routine returns 1 if the
6499 * ndlp has been freed. A return value of 0 indicates the ndlp is
6500 * not yet been released.
6501 */
6502 int
lpfc_nlp_not_used(struct lpfc_nodelist * ndlp)6503 lpfc_nlp_not_used(struct lpfc_nodelist *ndlp)
6504 {
6505 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
6506 "node not used: did:x%x flg:x%x refcnt:x%x",
6507 ndlp->nlp_DID, ndlp->nlp_flag,
6508 kref_read(&ndlp->kref));
6509 if (kref_read(&ndlp->kref) == 1)
6510 if (lpfc_nlp_put(ndlp))
6511 return 1;
6512 return 0;
6513 }
6514
6515 /**
6516 * lpfc_fcf_inuse - Check if FCF can be unregistered.
6517 * @phba: Pointer to hba context object.
6518 *
6519 * This function iterate through all FC nodes associated
6520 * will all vports to check if there is any node with
6521 * fc_rports associated with it. If there is an fc_rport
6522 * associated with the node, then the node is either in
6523 * discovered state or its devloss_timer is pending.
6524 */
6525 static int
lpfc_fcf_inuse(struct lpfc_hba * phba)6526 lpfc_fcf_inuse(struct lpfc_hba *phba)
6527 {
6528 struct lpfc_vport **vports;
6529 int i, ret = 0;
6530 struct lpfc_nodelist *ndlp;
6531 struct Scsi_Host *shost;
6532
6533 vports = lpfc_create_vport_work_array(phba);
6534
6535 /* If driver cannot allocate memory, indicate fcf is in use */
6536 if (!vports)
6537 return 1;
6538
6539 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
6540 shost = lpfc_shost_from_vport(vports[i]);
6541 spin_lock_irq(shost->host_lock);
6542 /*
6543 * IF the CVL_RCVD bit is not set then we have sent the
6544 * flogi.
6545 * If dev_loss fires while we are waiting we do not want to
6546 * unreg the fcf.
6547 */
6548 if (!(vports[i]->fc_flag & FC_VPORT_CVL_RCVD)) {
6549 spin_unlock_irq(shost->host_lock);
6550 ret = 1;
6551 goto out;
6552 }
6553 list_for_each_entry(ndlp, &vports[i]->fc_nodes, nlp_listp) {
6554 if (NLP_CHK_NODE_ACT(ndlp) && ndlp->rport &&
6555 (ndlp->rport->roles & FC_RPORT_ROLE_FCP_TARGET)) {
6556 ret = 1;
6557 spin_unlock_irq(shost->host_lock);
6558 goto out;
6559 } else if (ndlp->nlp_flag & NLP_RPI_REGISTERED) {
6560 ret = 1;
6561 lpfc_printf_log(phba, KERN_INFO,
6562 LOG_NODE | LOG_DISCOVERY,
6563 "2624 RPI %x DID %x flag %x "
6564 "still logged in\n",
6565 ndlp->nlp_rpi, ndlp->nlp_DID,
6566 ndlp->nlp_flag);
6567 }
6568 }
6569 spin_unlock_irq(shost->host_lock);
6570 }
6571 out:
6572 lpfc_destroy_vport_work_array(phba, vports);
6573 return ret;
6574 }
6575
6576 /**
6577 * lpfc_unregister_vfi_cmpl - Completion handler for unreg vfi.
6578 * @phba: Pointer to hba context object.
6579 * @mboxq: Pointer to mailbox object.
6580 *
6581 * This function frees memory associated with the mailbox command.
6582 */
6583 void
lpfc_unregister_vfi_cmpl(struct lpfc_hba * phba,LPFC_MBOXQ_t * mboxq)6584 lpfc_unregister_vfi_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
6585 {
6586 struct lpfc_vport *vport = mboxq->vport;
6587 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
6588
6589 if (mboxq->u.mb.mbxStatus) {
6590 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
6591 "2555 UNREG_VFI mbxStatus error x%x "
6592 "HBA state x%x\n",
6593 mboxq->u.mb.mbxStatus, vport->port_state);
6594 }
6595 spin_lock_irq(shost->host_lock);
6596 phba->pport->fc_flag &= ~FC_VFI_REGISTERED;
6597 spin_unlock_irq(shost->host_lock);
6598 mempool_free(mboxq, phba->mbox_mem_pool);
6599 return;
6600 }
6601
6602 /**
6603 * lpfc_unregister_fcfi_cmpl - Completion handler for unreg fcfi.
6604 * @phba: Pointer to hba context object.
6605 * @mboxq: Pointer to mailbox object.
6606 *
6607 * This function frees memory associated with the mailbox command.
6608 */
6609 static void
lpfc_unregister_fcfi_cmpl(struct lpfc_hba * phba,LPFC_MBOXQ_t * mboxq)6610 lpfc_unregister_fcfi_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
6611 {
6612 struct lpfc_vport *vport = mboxq->vport;
6613
6614 if (mboxq->u.mb.mbxStatus) {
6615 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
6616 "2550 UNREG_FCFI mbxStatus error x%x "
6617 "HBA state x%x\n",
6618 mboxq->u.mb.mbxStatus, vport->port_state);
6619 }
6620 mempool_free(mboxq, phba->mbox_mem_pool);
6621 return;
6622 }
6623
6624 /**
6625 * lpfc_unregister_fcf_prep - Unregister fcf record preparation
6626 * @phba: Pointer to hba context object.
6627 *
6628 * This function prepare the HBA for unregistering the currently registered
6629 * FCF from the HBA. It performs unregistering, in order, RPIs, VPIs, and
6630 * VFIs.
6631 */
6632 int
lpfc_unregister_fcf_prep(struct lpfc_hba * phba)6633 lpfc_unregister_fcf_prep(struct lpfc_hba *phba)
6634 {
6635 struct lpfc_vport **vports;
6636 struct lpfc_nodelist *ndlp;
6637 struct Scsi_Host *shost;
6638 int i = 0, rc;
6639
6640 /* Unregister RPIs */
6641 if (lpfc_fcf_inuse(phba))
6642 lpfc_unreg_hba_rpis(phba);
6643
6644 /* At this point, all discovery is aborted */
6645 phba->pport->port_state = LPFC_VPORT_UNKNOWN;
6646
6647 /* Unregister VPIs */
6648 vports = lpfc_create_vport_work_array(phba);
6649 if (vports && (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED))
6650 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
6651 /* Stop FLOGI/FDISC retries */
6652 ndlp = lpfc_findnode_did(vports[i], Fabric_DID);
6653 if (ndlp)
6654 lpfc_cancel_retry_delay_tmo(vports[i], ndlp);
6655 lpfc_cleanup_pending_mbox(vports[i]);
6656 if (phba->sli_rev == LPFC_SLI_REV4)
6657 lpfc_sli4_unreg_all_rpis(vports[i]);
6658 lpfc_mbx_unreg_vpi(vports[i]);
6659 shost = lpfc_shost_from_vport(vports[i]);
6660 spin_lock_irq(shost->host_lock);
6661 vports[i]->fc_flag |= FC_VPORT_NEEDS_INIT_VPI;
6662 vports[i]->vpi_state &= ~LPFC_VPI_REGISTERED;
6663 spin_unlock_irq(shost->host_lock);
6664 }
6665 lpfc_destroy_vport_work_array(phba, vports);
6666 if (i == 0 && (!(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED))) {
6667 ndlp = lpfc_findnode_did(phba->pport, Fabric_DID);
6668 if (ndlp)
6669 lpfc_cancel_retry_delay_tmo(phba->pport, ndlp);
6670 lpfc_cleanup_pending_mbox(phba->pport);
6671 if (phba->sli_rev == LPFC_SLI_REV4)
6672 lpfc_sli4_unreg_all_rpis(phba->pport);
6673 lpfc_mbx_unreg_vpi(phba->pport);
6674 shost = lpfc_shost_from_vport(phba->pport);
6675 spin_lock_irq(shost->host_lock);
6676 phba->pport->fc_flag |= FC_VPORT_NEEDS_INIT_VPI;
6677 phba->pport->vpi_state &= ~LPFC_VPI_REGISTERED;
6678 spin_unlock_irq(shost->host_lock);
6679 }
6680
6681 /* Cleanup any outstanding ELS commands */
6682 lpfc_els_flush_all_cmd(phba);
6683
6684 /* Unregister the physical port VFI */
6685 rc = lpfc_issue_unreg_vfi(phba->pport);
6686 return rc;
6687 }
6688
6689 /**
6690 * lpfc_sli4_unregister_fcf - Unregister currently registered FCF record
6691 * @phba: Pointer to hba context object.
6692 *
6693 * This function issues synchronous unregister FCF mailbox command to HBA to
6694 * unregister the currently registered FCF record. The driver does not reset
6695 * the driver FCF usage state flags.
6696 *
6697 * Return 0 if successfully issued, none-zero otherwise.
6698 */
6699 int
lpfc_sli4_unregister_fcf(struct lpfc_hba * phba)6700 lpfc_sli4_unregister_fcf(struct lpfc_hba *phba)
6701 {
6702 LPFC_MBOXQ_t *mbox;
6703 int rc;
6704
6705 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
6706 if (!mbox) {
6707 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
6708 "2551 UNREG_FCFI mbox allocation failed"
6709 "HBA state x%x\n", phba->pport->port_state);
6710 return -ENOMEM;
6711 }
6712 lpfc_unreg_fcfi(mbox, phba->fcf.fcfi);
6713 mbox->vport = phba->pport;
6714 mbox->mbox_cmpl = lpfc_unregister_fcfi_cmpl;
6715 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
6716
6717 if (rc == MBX_NOT_FINISHED) {
6718 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
6719 "2552 Unregister FCFI command failed rc x%x "
6720 "HBA state x%x\n",
6721 rc, phba->pport->port_state);
6722 return -EINVAL;
6723 }
6724 return 0;
6725 }
6726
6727 /**
6728 * lpfc_unregister_fcf_rescan - Unregister currently registered fcf and rescan
6729 * @phba: Pointer to hba context object.
6730 *
6731 * This function unregisters the currently reigstered FCF. This function
6732 * also tries to find another FCF for discovery by rescan the HBA FCF table.
6733 */
6734 void
lpfc_unregister_fcf_rescan(struct lpfc_hba * phba)6735 lpfc_unregister_fcf_rescan(struct lpfc_hba *phba)
6736 {
6737 int rc;
6738
6739 /* Preparation for unregistering fcf */
6740 rc = lpfc_unregister_fcf_prep(phba);
6741 if (rc) {
6742 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
6743 "2748 Failed to prepare for unregistering "
6744 "HBA's FCF record: rc=%d\n", rc);
6745 return;
6746 }
6747
6748 /* Now, unregister FCF record and reset HBA FCF state */
6749 rc = lpfc_sli4_unregister_fcf(phba);
6750 if (rc)
6751 return;
6752 /* Reset HBA FCF states after successful unregister FCF */
6753 phba->fcf.fcf_flag = 0;
6754 phba->fcf.current_rec.flag = 0;
6755
6756 /*
6757 * If driver is not unloading, check if there is any other
6758 * FCF record that can be used for discovery.
6759 */
6760 if ((phba->pport->load_flag & FC_UNLOADING) ||
6761 (phba->link_state < LPFC_LINK_UP))
6762 return;
6763
6764 /* This is considered as the initial FCF discovery scan */
6765 spin_lock_irq(&phba->hbalock);
6766 phba->fcf.fcf_flag |= FCF_INIT_DISC;
6767 spin_unlock_irq(&phba->hbalock);
6768
6769 /* Reset FCF roundrobin bmask for new discovery */
6770 lpfc_sli4_clear_fcf_rr_bmask(phba);
6771
6772 rc = lpfc_sli4_fcf_scan_read_fcf_rec(phba, LPFC_FCOE_FCF_GET_FIRST);
6773
6774 if (rc) {
6775 spin_lock_irq(&phba->hbalock);
6776 phba->fcf.fcf_flag &= ~FCF_INIT_DISC;
6777 spin_unlock_irq(&phba->hbalock);
6778 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
6779 "2553 lpfc_unregister_unused_fcf failed "
6780 "to read FCF record HBA state x%x\n",
6781 phba->pport->port_state);
6782 }
6783 }
6784
6785 /**
6786 * lpfc_unregister_fcf - Unregister the currently registered fcf record
6787 * @phba: Pointer to hba context object.
6788 *
6789 * This function just unregisters the currently reigstered FCF. It does not
6790 * try to find another FCF for discovery.
6791 */
6792 void
lpfc_unregister_fcf(struct lpfc_hba * phba)6793 lpfc_unregister_fcf(struct lpfc_hba *phba)
6794 {
6795 int rc;
6796
6797 /* Preparation for unregistering fcf */
6798 rc = lpfc_unregister_fcf_prep(phba);
6799 if (rc) {
6800 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
6801 "2749 Failed to prepare for unregistering "
6802 "HBA's FCF record: rc=%d\n", rc);
6803 return;
6804 }
6805
6806 /* Now, unregister FCF record and reset HBA FCF state */
6807 rc = lpfc_sli4_unregister_fcf(phba);
6808 if (rc)
6809 return;
6810 /* Set proper HBA FCF states after successful unregister FCF */
6811 spin_lock_irq(&phba->hbalock);
6812 phba->fcf.fcf_flag &= ~FCF_REGISTERED;
6813 spin_unlock_irq(&phba->hbalock);
6814 }
6815
6816 /**
6817 * lpfc_unregister_unused_fcf - Unregister FCF if all devices are disconnected.
6818 * @phba: Pointer to hba context object.
6819 *
6820 * This function check if there are any connected remote port for the FCF and
6821 * if all the devices are disconnected, this function unregister FCFI.
6822 * This function also tries to use another FCF for discovery.
6823 */
6824 void
lpfc_unregister_unused_fcf(struct lpfc_hba * phba)6825 lpfc_unregister_unused_fcf(struct lpfc_hba *phba)
6826 {
6827 /*
6828 * If HBA is not running in FIP mode, if HBA does not support
6829 * FCoE, if FCF discovery is ongoing, or if FCF has not been
6830 * registered, do nothing.
6831 */
6832 spin_lock_irq(&phba->hbalock);
6833 if (!(phba->hba_flag & HBA_FCOE_MODE) ||
6834 !(phba->fcf.fcf_flag & FCF_REGISTERED) ||
6835 !(phba->hba_flag & HBA_FIP_SUPPORT) ||
6836 (phba->fcf.fcf_flag & FCF_DISCOVERY) ||
6837 (phba->pport->port_state == LPFC_FLOGI)) {
6838 spin_unlock_irq(&phba->hbalock);
6839 return;
6840 }
6841 spin_unlock_irq(&phba->hbalock);
6842
6843 if (lpfc_fcf_inuse(phba))
6844 return;
6845
6846 lpfc_unregister_fcf_rescan(phba);
6847 }
6848
6849 /**
6850 * lpfc_read_fcf_conn_tbl - Create driver FCF connection table.
6851 * @phba: Pointer to hba context object.
6852 * @buff: Buffer containing the FCF connection table as in the config
6853 * region.
6854 * This function create driver data structure for the FCF connection
6855 * record table read from config region 23.
6856 */
6857 static void
lpfc_read_fcf_conn_tbl(struct lpfc_hba * phba,uint8_t * buff)6858 lpfc_read_fcf_conn_tbl(struct lpfc_hba *phba,
6859 uint8_t *buff)
6860 {
6861 struct lpfc_fcf_conn_entry *conn_entry, *next_conn_entry;
6862 struct lpfc_fcf_conn_hdr *conn_hdr;
6863 struct lpfc_fcf_conn_rec *conn_rec;
6864 uint32_t record_count;
6865 int i;
6866
6867 /* Free the current connect table */
6868 list_for_each_entry_safe(conn_entry, next_conn_entry,
6869 &phba->fcf_conn_rec_list, list) {
6870 list_del_init(&conn_entry->list);
6871 kfree(conn_entry);
6872 }
6873
6874 conn_hdr = (struct lpfc_fcf_conn_hdr *) buff;
6875 record_count = conn_hdr->length * sizeof(uint32_t)/
6876 sizeof(struct lpfc_fcf_conn_rec);
6877
6878 conn_rec = (struct lpfc_fcf_conn_rec *)
6879 (buff + sizeof(struct lpfc_fcf_conn_hdr));
6880
6881 for (i = 0; i < record_count; i++) {
6882 if (!(conn_rec[i].flags & FCFCNCT_VALID))
6883 continue;
6884 conn_entry = kzalloc(sizeof(struct lpfc_fcf_conn_entry),
6885 GFP_KERNEL);
6886 if (!conn_entry) {
6887 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
6888 "2566 Failed to allocate connection"
6889 " table entry\n");
6890 return;
6891 }
6892
6893 memcpy(&conn_entry->conn_rec, &conn_rec[i],
6894 sizeof(struct lpfc_fcf_conn_rec));
6895 list_add_tail(&conn_entry->list,
6896 &phba->fcf_conn_rec_list);
6897 }
6898
6899 if (!list_empty(&phba->fcf_conn_rec_list)) {
6900 i = 0;
6901 list_for_each_entry(conn_entry, &phba->fcf_conn_rec_list,
6902 list) {
6903 conn_rec = &conn_entry->conn_rec;
6904 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
6905 "3345 FCF connection list rec[%02d]: "
6906 "flags:x%04x, vtag:x%04x, "
6907 "fabric_name:x%02x:%02x:%02x:%02x:"
6908 "%02x:%02x:%02x:%02x, "
6909 "switch_name:x%02x:%02x:%02x:%02x:"
6910 "%02x:%02x:%02x:%02x\n", i++,
6911 conn_rec->flags, conn_rec->vlan_tag,
6912 conn_rec->fabric_name[0],
6913 conn_rec->fabric_name[1],
6914 conn_rec->fabric_name[2],
6915 conn_rec->fabric_name[3],
6916 conn_rec->fabric_name[4],
6917 conn_rec->fabric_name[5],
6918 conn_rec->fabric_name[6],
6919 conn_rec->fabric_name[7],
6920 conn_rec->switch_name[0],
6921 conn_rec->switch_name[1],
6922 conn_rec->switch_name[2],
6923 conn_rec->switch_name[3],
6924 conn_rec->switch_name[4],
6925 conn_rec->switch_name[5],
6926 conn_rec->switch_name[6],
6927 conn_rec->switch_name[7]);
6928 }
6929 }
6930 }
6931
6932 /**
6933 * lpfc_read_fcoe_param - Read FCoe parameters from conf region..
6934 * @phba: Pointer to hba context object.
6935 * @buff: Buffer containing the FCoE parameter data structure.
6936 *
6937 * This function update driver data structure with config
6938 * parameters read from config region 23.
6939 */
6940 static void
lpfc_read_fcoe_param(struct lpfc_hba * phba,uint8_t * buff)6941 lpfc_read_fcoe_param(struct lpfc_hba *phba,
6942 uint8_t *buff)
6943 {
6944 struct lpfc_fip_param_hdr *fcoe_param_hdr;
6945 struct lpfc_fcoe_params *fcoe_param;
6946
6947 fcoe_param_hdr = (struct lpfc_fip_param_hdr *)
6948 buff;
6949 fcoe_param = (struct lpfc_fcoe_params *)
6950 (buff + sizeof(struct lpfc_fip_param_hdr));
6951
6952 if ((fcoe_param_hdr->parm_version != FIPP_VERSION) ||
6953 (fcoe_param_hdr->length != FCOE_PARAM_LENGTH))
6954 return;
6955
6956 if (fcoe_param_hdr->parm_flags & FIPP_VLAN_VALID) {
6957 phba->valid_vlan = 1;
6958 phba->vlan_id = le16_to_cpu(fcoe_param->vlan_tag) &
6959 0xFFF;
6960 }
6961
6962 phba->fc_map[0] = fcoe_param->fc_map[0];
6963 phba->fc_map[1] = fcoe_param->fc_map[1];
6964 phba->fc_map[2] = fcoe_param->fc_map[2];
6965 return;
6966 }
6967
6968 /**
6969 * lpfc_get_rec_conf23 - Get a record type in config region data.
6970 * @buff: Buffer containing config region 23 data.
6971 * @size: Size of the data buffer.
6972 * @rec_type: Record type to be searched.
6973 *
6974 * This function searches config region data to find the beginning
6975 * of the record specified by record_type. If record found, this
6976 * function return pointer to the record else return NULL.
6977 */
6978 static uint8_t *
lpfc_get_rec_conf23(uint8_t * buff,uint32_t size,uint8_t rec_type)6979 lpfc_get_rec_conf23(uint8_t *buff, uint32_t size, uint8_t rec_type)
6980 {
6981 uint32_t offset = 0, rec_length;
6982
6983 if ((buff[0] == LPFC_REGION23_LAST_REC) ||
6984 (size < sizeof(uint32_t)))
6985 return NULL;
6986
6987 rec_length = buff[offset + 1];
6988
6989 /*
6990 * One TLV record has one word header and number of data words
6991 * specified in the rec_length field of the record header.
6992 */
6993 while ((offset + rec_length * sizeof(uint32_t) + sizeof(uint32_t))
6994 <= size) {
6995 if (buff[offset] == rec_type)
6996 return &buff[offset];
6997
6998 if (buff[offset] == LPFC_REGION23_LAST_REC)
6999 return NULL;
7000
7001 offset += rec_length * sizeof(uint32_t) + sizeof(uint32_t);
7002 rec_length = buff[offset + 1];
7003 }
7004 return NULL;
7005 }
7006
7007 /**
7008 * lpfc_parse_fcoe_conf - Parse FCoE config data read from config region 23.
7009 * @phba: Pointer to lpfc_hba data structure.
7010 * @buff: Buffer containing config region 23 data.
7011 * @size: Size of the data buffer.
7012 *
7013 * This function parses the FCoE config parameters in config region 23 and
7014 * populate driver data structure with the parameters.
7015 */
7016 void
lpfc_parse_fcoe_conf(struct lpfc_hba * phba,uint8_t * buff,uint32_t size)7017 lpfc_parse_fcoe_conf(struct lpfc_hba *phba,
7018 uint8_t *buff,
7019 uint32_t size)
7020 {
7021 uint32_t offset = 0;
7022 uint8_t *rec_ptr;
7023
7024 /*
7025 * If data size is less than 2 words signature and version cannot be
7026 * verified.
7027 */
7028 if (size < 2*sizeof(uint32_t))
7029 return;
7030
7031 /* Check the region signature first */
7032 if (memcmp(buff, LPFC_REGION23_SIGNATURE, 4)) {
7033 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
7034 "2567 Config region 23 has bad signature\n");
7035 return;
7036 }
7037
7038 offset += 4;
7039
7040 /* Check the data structure version */
7041 if (buff[offset] != LPFC_REGION23_VERSION) {
7042 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
7043 "2568 Config region 23 has bad version\n");
7044 return;
7045 }
7046 offset += 4;
7047
7048 /* Read FCoE param record */
7049 rec_ptr = lpfc_get_rec_conf23(&buff[offset],
7050 size - offset, FCOE_PARAM_TYPE);
7051 if (rec_ptr)
7052 lpfc_read_fcoe_param(phba, rec_ptr);
7053
7054 /* Read FCF connection table */
7055 rec_ptr = lpfc_get_rec_conf23(&buff[offset],
7056 size - offset, FCOE_CONN_TBL_TYPE);
7057 if (rec_ptr)
7058 lpfc_read_fcf_conn_tbl(phba, rec_ptr);
7059
7060 }
7061