1 /*******************************************************************
2 * This file is part of the Emulex Linux Device Driver for *
3 * Fibre Channel Host Bus Adapters. *
4 * Copyright (C) 2017-2019 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
32 #include <scsi/scsi.h>
33 #include <scsi/scsi_device.h>
34 #include <scsi/scsi_host.h>
35 #include <scsi/scsi_transport_fc.h>
36 #include <scsi/fc/fc_fs.h>
37
38 #include <linux/nvme-fc-driver.h>
39
40 #include "lpfc_hw4.h"
41 #include "lpfc_hw.h"
42 #include "lpfc_nl.h"
43 #include "lpfc_disc.h"
44 #include "lpfc_sli.h"
45 #include "lpfc_sli4.h"
46 #include "lpfc.h"
47 #include "lpfc_scsi.h"
48 #include "lpfc_nvme.h"
49 #include "lpfc_logmsg.h"
50 #include "lpfc_crtn.h"
51 #include "lpfc_vport.h"
52 #include "lpfc_debugfs.h"
53
54 /* AlpaArray for assignment of scsid for scan-down and bind_method */
55 static uint8_t lpfcAlpaArray[] = {
56 0xEF, 0xE8, 0xE4, 0xE2, 0xE1, 0xE0, 0xDC, 0xDA, 0xD9, 0xD6,
57 0xD5, 0xD4, 0xD3, 0xD2, 0xD1, 0xCE, 0xCD, 0xCC, 0xCB, 0xCA,
58 0xC9, 0xC7, 0xC6, 0xC5, 0xC3, 0xBC, 0xBA, 0xB9, 0xB6, 0xB5,
59 0xB4, 0xB3, 0xB2, 0xB1, 0xAE, 0xAD, 0xAC, 0xAB, 0xAA, 0xA9,
60 0xA7, 0xA6, 0xA5, 0xA3, 0x9F, 0x9E, 0x9D, 0x9B, 0x98, 0x97,
61 0x90, 0x8F, 0x88, 0x84, 0x82, 0x81, 0x80, 0x7C, 0x7A, 0x79,
62 0x76, 0x75, 0x74, 0x73, 0x72, 0x71, 0x6E, 0x6D, 0x6C, 0x6B,
63 0x6A, 0x69, 0x67, 0x66, 0x65, 0x63, 0x5C, 0x5A, 0x59, 0x56,
64 0x55, 0x54, 0x53, 0x52, 0x51, 0x4E, 0x4D, 0x4C, 0x4B, 0x4A,
65 0x49, 0x47, 0x46, 0x45, 0x43, 0x3C, 0x3A, 0x39, 0x36, 0x35,
66 0x34, 0x33, 0x32, 0x31, 0x2E, 0x2D, 0x2C, 0x2B, 0x2A, 0x29,
67 0x27, 0x26, 0x25, 0x23, 0x1F, 0x1E, 0x1D, 0x1B, 0x18, 0x17,
68 0x10, 0x0F, 0x08, 0x04, 0x02, 0x01
69 };
70
71 static void lpfc_disc_timeout_handler(struct lpfc_vport *);
72 static void lpfc_disc_flush_list(struct lpfc_vport *vport);
73 static void lpfc_unregister_fcfi_cmpl(struct lpfc_hba *, LPFC_MBOXQ_t *);
74 static int lpfc_fcf_inuse(struct lpfc_hba *);
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_NODE,
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_NODE,
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_DISCOVERY,
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_DISCOVERY,
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_ELS,
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 lpfc_disc_state_machine(vport, ndlp, NULL,
828 remove
829 ? NLP_EVT_DEVICE_RM
830 : NLP_EVT_DEVICE_RECOVERY);
831 }
832 if (phba->sli3_options & LPFC_SLI3_VPORT_TEARDOWN) {
833 if (phba->sli_rev == LPFC_SLI_REV4)
834 lpfc_sli4_unreg_all_rpis(vport);
835 lpfc_mbx_unreg_vpi(vport);
836 spin_lock_irq(shost->host_lock);
837 vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
838 spin_unlock_irq(shost->host_lock);
839 }
840 }
841
842 void
lpfc_port_link_failure(struct lpfc_vport * vport)843 lpfc_port_link_failure(struct lpfc_vport *vport)
844 {
845 lpfc_vport_set_state(vport, FC_VPORT_LINKDOWN);
846
847 /* Cleanup any outstanding received buffers */
848 lpfc_cleanup_rcv_buffers(vport);
849
850 /* Cleanup any outstanding RSCN activity */
851 lpfc_els_flush_rscn(vport);
852
853 /* Cleanup any outstanding ELS commands */
854 lpfc_els_flush_cmd(vport);
855
856 lpfc_cleanup_rpis(vport, 0);
857
858 /* Turn off discovery timer if its running */
859 lpfc_can_disctmo(vport);
860 }
861
862 void
lpfc_linkdown_port(struct lpfc_vport * vport)863 lpfc_linkdown_port(struct lpfc_vport *vport)
864 {
865 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
866
867 if (vport->cfg_enable_fc4_type != LPFC_ENABLE_NVME)
868 fc_host_post_event(shost, fc_get_event_number(),
869 FCH_EVT_LINKDOWN, 0);
870
871 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
872 "Link Down: state:x%x rtry:x%x flg:x%x",
873 vport->port_state, vport->fc_ns_retry, vport->fc_flag);
874
875 lpfc_port_link_failure(vport);
876
877 /* Stop delayed Nport discovery */
878 spin_lock_irq(shost->host_lock);
879 vport->fc_flag &= ~FC_DISC_DELAYED;
880 spin_unlock_irq(shost->host_lock);
881 del_timer_sync(&vport->delayed_disc_tmo);
882 }
883
884 int
lpfc_linkdown(struct lpfc_hba * phba)885 lpfc_linkdown(struct lpfc_hba *phba)
886 {
887 struct lpfc_vport *vport = phba->pport;
888 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
889 struct lpfc_vport **vports;
890 LPFC_MBOXQ_t *mb;
891 int i;
892
893 if (phba->link_state == LPFC_LINK_DOWN)
894 return 0;
895
896 /* Block all SCSI stack I/Os */
897 lpfc_scsi_dev_block(phba);
898
899 phba->defer_flogi_acc_flag = false;
900
901 spin_lock_irq(&phba->hbalock);
902 phba->fcf.fcf_flag &= ~(FCF_AVAILABLE | FCF_SCAN_DONE);
903 spin_unlock_irq(&phba->hbalock);
904 if (phba->link_state > LPFC_LINK_DOWN) {
905 phba->link_state = LPFC_LINK_DOWN;
906 if (phba->sli4_hba.conf_trunk) {
907 phba->trunk_link.link0.state = 0;
908 phba->trunk_link.link1.state = 0;
909 phba->trunk_link.link2.state = 0;
910 phba->trunk_link.link3.state = 0;
911 phba->sli4_hba.link_state.logical_speed =
912 LPFC_LINK_SPEED_UNKNOWN;
913 }
914 spin_lock_irq(shost->host_lock);
915 phba->pport->fc_flag &= ~FC_LBIT;
916 spin_unlock_irq(shost->host_lock);
917 }
918 vports = lpfc_create_vport_work_array(phba);
919 if (vports != NULL) {
920 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
921 /* Issue a LINK DOWN event to all nodes */
922 lpfc_linkdown_port(vports[i]);
923
924 vports[i]->fc_myDID = 0;
925
926 if ((vport->cfg_enable_fc4_type == LPFC_ENABLE_BOTH) ||
927 (vport->cfg_enable_fc4_type == LPFC_ENABLE_NVME)) {
928 if (phba->nvmet_support)
929 lpfc_nvmet_update_targetport(phba);
930 else
931 lpfc_nvme_update_localport(vports[i]);
932 }
933 }
934 }
935 lpfc_destroy_vport_work_array(phba, vports);
936
937 /* Clean up any SLI3 firmware default rpi's */
938 if (phba->sli_rev > LPFC_SLI_REV3)
939 goto skip_unreg_did;
940
941 mb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
942 if (mb) {
943 lpfc_unreg_did(phba, 0xffff, LPFC_UNREG_ALL_DFLT_RPIS, mb);
944 mb->vport = vport;
945 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
946 if (lpfc_sli_issue_mbox(phba, mb, MBX_NOWAIT)
947 == MBX_NOT_FINISHED) {
948 mempool_free(mb, phba->mbox_mem_pool);
949 }
950 }
951
952 skip_unreg_did:
953 /* Setup myDID for link up if we are in pt2pt mode */
954 if (phba->pport->fc_flag & FC_PT2PT) {
955 mb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
956 if (mb) {
957 lpfc_config_link(phba, mb);
958 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
959 mb->vport = vport;
960 if (lpfc_sli_issue_mbox(phba, mb, MBX_NOWAIT)
961 == MBX_NOT_FINISHED) {
962 mempool_free(mb, phba->mbox_mem_pool);
963 }
964 }
965 spin_lock_irq(shost->host_lock);
966 phba->pport->fc_flag &= ~(FC_PT2PT | FC_PT2PT_PLOGI);
967 phba->pport->rcv_flogi_cnt = 0;
968 spin_unlock_irq(shost->host_lock);
969 }
970 return 0;
971 }
972
973 static void
lpfc_linkup_cleanup_nodes(struct lpfc_vport * vport)974 lpfc_linkup_cleanup_nodes(struct lpfc_vport *vport)
975 {
976 struct lpfc_nodelist *ndlp;
977
978 list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
979 ndlp->nlp_fc4_type &= ~(NLP_FC4_FCP | NLP_FC4_NVME);
980 if (!NLP_CHK_NODE_ACT(ndlp))
981 continue;
982 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
983 continue;
984 if (ndlp->nlp_type & NLP_FABRIC) {
985 /* On Linkup its safe to clean up the ndlp
986 * from Fabric connections.
987 */
988 if (ndlp->nlp_DID != Fabric_DID)
989 lpfc_unreg_rpi(vport, ndlp);
990 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
991 } else if (!(ndlp->nlp_flag & NLP_NPR_ADISC)) {
992 /* Fail outstanding IO now since device is
993 * marked for PLOGI.
994 */
995 lpfc_unreg_rpi(vport, ndlp);
996 }
997 }
998 }
999
1000 static void
lpfc_linkup_port(struct lpfc_vport * vport)1001 lpfc_linkup_port(struct lpfc_vport *vport)
1002 {
1003 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1004 struct lpfc_hba *phba = vport->phba;
1005
1006 if ((vport->load_flag & FC_UNLOADING) != 0)
1007 return;
1008
1009 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
1010 "Link Up: top:x%x speed:x%x flg:x%x",
1011 phba->fc_topology, phba->fc_linkspeed, phba->link_flag);
1012
1013 /* If NPIV is not enabled, only bring the physical port up */
1014 if (!(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
1015 (vport != phba->pport))
1016 return;
1017
1018 if (vport->cfg_enable_fc4_type != LPFC_ENABLE_NVME)
1019 fc_host_post_event(shost, fc_get_event_number(),
1020 FCH_EVT_LINKUP, 0);
1021
1022 spin_lock_irq(shost->host_lock);
1023 vport->fc_flag &= ~(FC_PT2PT | FC_PT2PT_PLOGI | FC_ABORT_DISCOVERY |
1024 FC_RSCN_MODE | FC_NLP_MORE | FC_RSCN_DISCOVERY);
1025 vport->fc_flag |= FC_NDISC_ACTIVE;
1026 vport->fc_ns_retry = 0;
1027 spin_unlock_irq(shost->host_lock);
1028
1029 if (vport->fc_flag & FC_LBIT)
1030 lpfc_linkup_cleanup_nodes(vport);
1031
1032 }
1033
1034 static int
lpfc_linkup(struct lpfc_hba * phba)1035 lpfc_linkup(struct lpfc_hba *phba)
1036 {
1037 struct lpfc_vport **vports;
1038 int i;
1039 struct Scsi_Host *shost = lpfc_shost_from_vport(phba->pport);
1040
1041 phba->link_state = LPFC_LINK_UP;
1042
1043 /* Unblock fabric iocbs if they are blocked */
1044 clear_bit(FABRIC_COMANDS_BLOCKED, &phba->bit_flags);
1045 del_timer_sync(&phba->fabric_block_timer);
1046
1047 vports = lpfc_create_vport_work_array(phba);
1048 if (vports != NULL)
1049 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++)
1050 lpfc_linkup_port(vports[i]);
1051 lpfc_destroy_vport_work_array(phba, vports);
1052
1053 /* Clear the pport flogi counter in case the link down was
1054 * absorbed without an ACQE. No lock here - in worker thread
1055 * and discovery is synchronized.
1056 */
1057 spin_lock_irq(shost->host_lock);
1058 phba->pport->rcv_flogi_cnt = 0;
1059 spin_unlock_irq(shost->host_lock);
1060
1061 /* reinitialize initial FLOGI flag */
1062 phba->hba_flag &= ~(HBA_FLOGI_ISSUED);
1063 phba->defer_flogi_acc_flag = false;
1064
1065 return 0;
1066 }
1067
1068 /*
1069 * This routine handles processing a CLEAR_LA mailbox
1070 * command upon completion. It is setup in the LPFC_MBOXQ
1071 * as the completion routine when the command is
1072 * handed off to the SLI layer. SLI3 only.
1073 */
1074 static void
lpfc_mbx_cmpl_clear_la(struct lpfc_hba * phba,LPFC_MBOXQ_t * pmb)1075 lpfc_mbx_cmpl_clear_la(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
1076 {
1077 struct lpfc_vport *vport = pmb->vport;
1078 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1079 struct lpfc_sli *psli = &phba->sli;
1080 MAILBOX_t *mb = &pmb->u.mb;
1081 uint32_t control;
1082
1083 /* Since we don't do discovery right now, turn these off here */
1084 psli->sli3_ring[LPFC_EXTRA_RING].flag &= ~LPFC_STOP_IOCB_EVENT;
1085 psli->sli3_ring[LPFC_FCP_RING].flag &= ~LPFC_STOP_IOCB_EVENT;
1086
1087 /* Check for error */
1088 if ((mb->mbxStatus) && (mb->mbxStatus != 0x1601)) {
1089 /* CLEAR_LA mbox error <mbxStatus> state <hba_state> */
1090 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
1091 "0320 CLEAR_LA mbxStatus error x%x hba "
1092 "state x%x\n",
1093 mb->mbxStatus, vport->port_state);
1094 phba->link_state = LPFC_HBA_ERROR;
1095 goto out;
1096 }
1097
1098 if (vport->port_type == LPFC_PHYSICAL_PORT)
1099 phba->link_state = LPFC_HBA_READY;
1100
1101 spin_lock_irq(&phba->hbalock);
1102 psli->sli_flag |= LPFC_PROCESS_LA;
1103 control = readl(phba->HCregaddr);
1104 control |= HC_LAINT_ENA;
1105 writel(control, phba->HCregaddr);
1106 readl(phba->HCregaddr); /* flush */
1107 spin_unlock_irq(&phba->hbalock);
1108 mempool_free(pmb, phba->mbox_mem_pool);
1109 return;
1110
1111 out:
1112 /* Device Discovery completes */
1113 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
1114 "0225 Device Discovery completes\n");
1115 mempool_free(pmb, phba->mbox_mem_pool);
1116
1117 spin_lock_irq(shost->host_lock);
1118 vport->fc_flag &= ~FC_ABORT_DISCOVERY;
1119 spin_unlock_irq(shost->host_lock);
1120
1121 lpfc_can_disctmo(vport);
1122
1123 /* turn on Link Attention interrupts */
1124
1125 spin_lock_irq(&phba->hbalock);
1126 psli->sli_flag |= LPFC_PROCESS_LA;
1127 control = readl(phba->HCregaddr);
1128 control |= HC_LAINT_ENA;
1129 writel(control, phba->HCregaddr);
1130 readl(phba->HCregaddr); /* flush */
1131 spin_unlock_irq(&phba->hbalock);
1132
1133 return;
1134 }
1135
1136
1137 void
lpfc_mbx_cmpl_local_config_link(struct lpfc_hba * phba,LPFC_MBOXQ_t * pmb)1138 lpfc_mbx_cmpl_local_config_link(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
1139 {
1140 struct lpfc_vport *vport = pmb->vport;
1141 uint8_t bbscn = 0;
1142
1143 if (pmb->u.mb.mbxStatus)
1144 goto out;
1145
1146 mempool_free(pmb, phba->mbox_mem_pool);
1147
1148 /* don't perform discovery for SLI4 loopback diagnostic test */
1149 if ((phba->sli_rev == LPFC_SLI_REV4) &&
1150 !(phba->hba_flag & HBA_FCOE_MODE) &&
1151 (phba->link_flag & LS_LOOPBACK_MODE))
1152 return;
1153
1154 if (phba->fc_topology == LPFC_TOPOLOGY_LOOP &&
1155 vport->fc_flag & FC_PUBLIC_LOOP &&
1156 !(vport->fc_flag & FC_LBIT)) {
1157 /* Need to wait for FAN - use discovery timer
1158 * for timeout. port_state is identically
1159 * LPFC_LOCAL_CFG_LINK while waiting for FAN
1160 */
1161 lpfc_set_disctmo(vport);
1162 return;
1163 }
1164
1165 /* Start discovery by sending a FLOGI. port_state is identically
1166 * LPFC_FLOGI while waiting for FLOGI cmpl
1167 */
1168 if (vport->port_state != LPFC_FLOGI) {
1169 if (phba->bbcredit_support && phba->cfg_enable_bbcr) {
1170 bbscn = bf_get(lpfc_bbscn_def,
1171 &phba->sli4_hba.bbscn_params);
1172 vport->fc_sparam.cmn.bbRcvSizeMsb &= 0xf;
1173 vport->fc_sparam.cmn.bbRcvSizeMsb |= (bbscn << 4);
1174 }
1175 lpfc_initial_flogi(vport);
1176 } else if (vport->fc_flag & FC_PT2PT) {
1177 lpfc_disc_start(vport);
1178 }
1179 return;
1180
1181 out:
1182 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
1183 "0306 CONFIG_LINK mbxStatus error x%x "
1184 "HBA state x%x\n",
1185 pmb->u.mb.mbxStatus, vport->port_state);
1186 mempool_free(pmb, phba->mbox_mem_pool);
1187
1188 lpfc_linkdown(phba);
1189
1190 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
1191 "0200 CONFIG_LINK bad hba state x%x\n",
1192 vport->port_state);
1193
1194 lpfc_issue_clear_la(phba, vport);
1195 return;
1196 }
1197
1198 /**
1199 * lpfc_sli4_clear_fcf_rr_bmask
1200 * @phba pointer to the struct lpfc_hba for this port.
1201 * This fucnction resets the round robin bit mask and clears the
1202 * fcf priority list. The list deletions are done while holding the
1203 * hbalock. The ON_LIST flag and the FLOGI_FAILED flags are cleared
1204 * from the lpfc_fcf_pri record.
1205 **/
1206 void
lpfc_sli4_clear_fcf_rr_bmask(struct lpfc_hba * phba)1207 lpfc_sli4_clear_fcf_rr_bmask(struct lpfc_hba *phba)
1208 {
1209 struct lpfc_fcf_pri *fcf_pri;
1210 struct lpfc_fcf_pri *next_fcf_pri;
1211 memset(phba->fcf.fcf_rr_bmask, 0, sizeof(*phba->fcf.fcf_rr_bmask));
1212 spin_lock_irq(&phba->hbalock);
1213 list_for_each_entry_safe(fcf_pri, next_fcf_pri,
1214 &phba->fcf.fcf_pri_list, list) {
1215 list_del_init(&fcf_pri->list);
1216 fcf_pri->fcf_rec.flag = 0;
1217 }
1218 spin_unlock_irq(&phba->hbalock);
1219 }
1220 static void
lpfc_mbx_cmpl_reg_fcfi(struct lpfc_hba * phba,LPFC_MBOXQ_t * mboxq)1221 lpfc_mbx_cmpl_reg_fcfi(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
1222 {
1223 struct lpfc_vport *vport = mboxq->vport;
1224
1225 if (mboxq->u.mb.mbxStatus) {
1226 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
1227 "2017 REG_FCFI mbxStatus error x%x "
1228 "HBA state x%x\n",
1229 mboxq->u.mb.mbxStatus, vport->port_state);
1230 goto fail_out;
1231 }
1232
1233 /* Start FCoE discovery by sending a FLOGI. */
1234 phba->fcf.fcfi = bf_get(lpfc_reg_fcfi_fcfi, &mboxq->u.mqe.un.reg_fcfi);
1235 /* Set the FCFI registered flag */
1236 spin_lock_irq(&phba->hbalock);
1237 phba->fcf.fcf_flag |= FCF_REGISTERED;
1238 spin_unlock_irq(&phba->hbalock);
1239
1240 /* If there is a pending FCoE event, restart FCF table scan. */
1241 if ((!(phba->hba_flag & FCF_RR_INPROG)) &&
1242 lpfc_check_pending_fcoe_event(phba, LPFC_UNREG_FCF))
1243 goto fail_out;
1244
1245 /* Mark successful completion of FCF table scan */
1246 spin_lock_irq(&phba->hbalock);
1247 phba->fcf.fcf_flag |= (FCF_SCAN_DONE | FCF_IN_USE);
1248 phba->hba_flag &= ~FCF_TS_INPROG;
1249 if (vport->port_state != LPFC_FLOGI) {
1250 phba->hba_flag |= FCF_RR_INPROG;
1251 spin_unlock_irq(&phba->hbalock);
1252 lpfc_issue_init_vfi(vport);
1253 goto out;
1254 }
1255 spin_unlock_irq(&phba->hbalock);
1256 goto out;
1257
1258 fail_out:
1259 spin_lock_irq(&phba->hbalock);
1260 phba->hba_flag &= ~FCF_RR_INPROG;
1261 spin_unlock_irq(&phba->hbalock);
1262 out:
1263 mempool_free(mboxq, phba->mbox_mem_pool);
1264 }
1265
1266 /**
1267 * lpfc_fab_name_match - Check if the fcf fabric name match.
1268 * @fab_name: pointer to fabric name.
1269 * @new_fcf_record: pointer to fcf record.
1270 *
1271 * This routine compare the fcf record's fabric name with provided
1272 * fabric name. If the fabric name are identical this function
1273 * returns 1 else return 0.
1274 **/
1275 static uint32_t
lpfc_fab_name_match(uint8_t * fab_name,struct fcf_record * new_fcf_record)1276 lpfc_fab_name_match(uint8_t *fab_name, struct fcf_record *new_fcf_record)
1277 {
1278 if (fab_name[0] != bf_get(lpfc_fcf_record_fab_name_0, new_fcf_record))
1279 return 0;
1280 if (fab_name[1] != bf_get(lpfc_fcf_record_fab_name_1, new_fcf_record))
1281 return 0;
1282 if (fab_name[2] != bf_get(lpfc_fcf_record_fab_name_2, new_fcf_record))
1283 return 0;
1284 if (fab_name[3] != bf_get(lpfc_fcf_record_fab_name_3, new_fcf_record))
1285 return 0;
1286 if (fab_name[4] != bf_get(lpfc_fcf_record_fab_name_4, new_fcf_record))
1287 return 0;
1288 if (fab_name[5] != bf_get(lpfc_fcf_record_fab_name_5, new_fcf_record))
1289 return 0;
1290 if (fab_name[6] != bf_get(lpfc_fcf_record_fab_name_6, new_fcf_record))
1291 return 0;
1292 if (fab_name[7] != bf_get(lpfc_fcf_record_fab_name_7, new_fcf_record))
1293 return 0;
1294 return 1;
1295 }
1296
1297 /**
1298 * lpfc_sw_name_match - Check if the fcf switch name match.
1299 * @fab_name: pointer to fabric name.
1300 * @new_fcf_record: pointer to fcf record.
1301 *
1302 * This routine compare the fcf record's switch name with provided
1303 * switch name. If the switch name are identical this function
1304 * returns 1 else return 0.
1305 **/
1306 static uint32_t
lpfc_sw_name_match(uint8_t * sw_name,struct fcf_record * new_fcf_record)1307 lpfc_sw_name_match(uint8_t *sw_name, struct fcf_record *new_fcf_record)
1308 {
1309 if (sw_name[0] != bf_get(lpfc_fcf_record_switch_name_0, new_fcf_record))
1310 return 0;
1311 if (sw_name[1] != bf_get(lpfc_fcf_record_switch_name_1, new_fcf_record))
1312 return 0;
1313 if (sw_name[2] != bf_get(lpfc_fcf_record_switch_name_2, new_fcf_record))
1314 return 0;
1315 if (sw_name[3] != bf_get(lpfc_fcf_record_switch_name_3, new_fcf_record))
1316 return 0;
1317 if (sw_name[4] != bf_get(lpfc_fcf_record_switch_name_4, new_fcf_record))
1318 return 0;
1319 if (sw_name[5] != bf_get(lpfc_fcf_record_switch_name_5, new_fcf_record))
1320 return 0;
1321 if (sw_name[6] != bf_get(lpfc_fcf_record_switch_name_6, new_fcf_record))
1322 return 0;
1323 if (sw_name[7] != bf_get(lpfc_fcf_record_switch_name_7, new_fcf_record))
1324 return 0;
1325 return 1;
1326 }
1327
1328 /**
1329 * lpfc_mac_addr_match - Check if the fcf mac address match.
1330 * @mac_addr: pointer to mac address.
1331 * @new_fcf_record: pointer to fcf record.
1332 *
1333 * This routine compare the fcf record's mac address with HBA's
1334 * FCF mac address. If the mac addresses are identical this function
1335 * returns 1 else return 0.
1336 **/
1337 static uint32_t
lpfc_mac_addr_match(uint8_t * mac_addr,struct fcf_record * new_fcf_record)1338 lpfc_mac_addr_match(uint8_t *mac_addr, struct fcf_record *new_fcf_record)
1339 {
1340 if (mac_addr[0] != bf_get(lpfc_fcf_record_mac_0, new_fcf_record))
1341 return 0;
1342 if (mac_addr[1] != bf_get(lpfc_fcf_record_mac_1, new_fcf_record))
1343 return 0;
1344 if (mac_addr[2] != bf_get(lpfc_fcf_record_mac_2, new_fcf_record))
1345 return 0;
1346 if (mac_addr[3] != bf_get(lpfc_fcf_record_mac_3, new_fcf_record))
1347 return 0;
1348 if (mac_addr[4] != bf_get(lpfc_fcf_record_mac_4, new_fcf_record))
1349 return 0;
1350 if (mac_addr[5] != bf_get(lpfc_fcf_record_mac_5, new_fcf_record))
1351 return 0;
1352 return 1;
1353 }
1354
1355 static bool
lpfc_vlan_id_match(uint16_t curr_vlan_id,uint16_t new_vlan_id)1356 lpfc_vlan_id_match(uint16_t curr_vlan_id, uint16_t new_vlan_id)
1357 {
1358 return (curr_vlan_id == new_vlan_id);
1359 }
1360
1361 /**
1362 * lpfc_update_fcf_record - Update driver fcf record
1363 * __lpfc_update_fcf_record_pri - update the lpfc_fcf_pri record.
1364 * @phba: pointer to lpfc hba data structure.
1365 * @fcf_index: Index for the lpfc_fcf_record.
1366 * @new_fcf_record: pointer to hba fcf record.
1367 *
1368 * This routine updates the driver FCF priority record from the new HBA FCF
1369 * record. This routine is called with the host lock held.
1370 **/
1371 static void
__lpfc_update_fcf_record_pri(struct lpfc_hba * phba,uint16_t fcf_index,struct fcf_record * new_fcf_record)1372 __lpfc_update_fcf_record_pri(struct lpfc_hba *phba, uint16_t fcf_index,
1373 struct fcf_record *new_fcf_record
1374 )
1375 {
1376 struct lpfc_fcf_pri *fcf_pri;
1377
1378 lockdep_assert_held(&phba->hbalock);
1379
1380 fcf_pri = &phba->fcf.fcf_pri[fcf_index];
1381 fcf_pri->fcf_rec.fcf_index = fcf_index;
1382 /* FCF record priority */
1383 fcf_pri->fcf_rec.priority = new_fcf_record->fip_priority;
1384
1385 }
1386
1387 /**
1388 * lpfc_copy_fcf_record - Copy fcf information to lpfc_hba.
1389 * @fcf: pointer to driver fcf record.
1390 * @new_fcf_record: pointer to fcf record.
1391 *
1392 * This routine copies the FCF information from the FCF
1393 * record to lpfc_hba data structure.
1394 **/
1395 static void
lpfc_copy_fcf_record(struct lpfc_fcf_rec * fcf_rec,struct fcf_record * new_fcf_record)1396 lpfc_copy_fcf_record(struct lpfc_fcf_rec *fcf_rec,
1397 struct fcf_record *new_fcf_record)
1398 {
1399 /* Fabric name */
1400 fcf_rec->fabric_name[0] =
1401 bf_get(lpfc_fcf_record_fab_name_0, new_fcf_record);
1402 fcf_rec->fabric_name[1] =
1403 bf_get(lpfc_fcf_record_fab_name_1, new_fcf_record);
1404 fcf_rec->fabric_name[2] =
1405 bf_get(lpfc_fcf_record_fab_name_2, new_fcf_record);
1406 fcf_rec->fabric_name[3] =
1407 bf_get(lpfc_fcf_record_fab_name_3, new_fcf_record);
1408 fcf_rec->fabric_name[4] =
1409 bf_get(lpfc_fcf_record_fab_name_4, new_fcf_record);
1410 fcf_rec->fabric_name[5] =
1411 bf_get(lpfc_fcf_record_fab_name_5, new_fcf_record);
1412 fcf_rec->fabric_name[6] =
1413 bf_get(lpfc_fcf_record_fab_name_6, new_fcf_record);
1414 fcf_rec->fabric_name[7] =
1415 bf_get(lpfc_fcf_record_fab_name_7, new_fcf_record);
1416 /* Mac address */
1417 fcf_rec->mac_addr[0] = bf_get(lpfc_fcf_record_mac_0, new_fcf_record);
1418 fcf_rec->mac_addr[1] = bf_get(lpfc_fcf_record_mac_1, new_fcf_record);
1419 fcf_rec->mac_addr[2] = bf_get(lpfc_fcf_record_mac_2, new_fcf_record);
1420 fcf_rec->mac_addr[3] = bf_get(lpfc_fcf_record_mac_3, new_fcf_record);
1421 fcf_rec->mac_addr[4] = bf_get(lpfc_fcf_record_mac_4, new_fcf_record);
1422 fcf_rec->mac_addr[5] = bf_get(lpfc_fcf_record_mac_5, new_fcf_record);
1423 /* FCF record index */
1424 fcf_rec->fcf_indx = bf_get(lpfc_fcf_record_fcf_index, new_fcf_record);
1425 /* FCF record priority */
1426 fcf_rec->priority = new_fcf_record->fip_priority;
1427 /* Switch name */
1428 fcf_rec->switch_name[0] =
1429 bf_get(lpfc_fcf_record_switch_name_0, new_fcf_record);
1430 fcf_rec->switch_name[1] =
1431 bf_get(lpfc_fcf_record_switch_name_1, new_fcf_record);
1432 fcf_rec->switch_name[2] =
1433 bf_get(lpfc_fcf_record_switch_name_2, new_fcf_record);
1434 fcf_rec->switch_name[3] =
1435 bf_get(lpfc_fcf_record_switch_name_3, new_fcf_record);
1436 fcf_rec->switch_name[4] =
1437 bf_get(lpfc_fcf_record_switch_name_4, new_fcf_record);
1438 fcf_rec->switch_name[5] =
1439 bf_get(lpfc_fcf_record_switch_name_5, new_fcf_record);
1440 fcf_rec->switch_name[6] =
1441 bf_get(lpfc_fcf_record_switch_name_6, new_fcf_record);
1442 fcf_rec->switch_name[7] =
1443 bf_get(lpfc_fcf_record_switch_name_7, new_fcf_record);
1444 }
1445
1446 /**
1447 * lpfc_update_fcf_record - Update driver fcf record
1448 * @phba: pointer to lpfc hba data structure.
1449 * @fcf_rec: pointer to driver fcf record.
1450 * @new_fcf_record: pointer to hba fcf record.
1451 * @addr_mode: address mode to be set to the driver fcf record.
1452 * @vlan_id: vlan tag to be set to the driver fcf record.
1453 * @flag: flag bits to be set to the driver fcf record.
1454 *
1455 * This routine updates the driver FCF record from the new HBA FCF record
1456 * together with the address mode, vlan_id, and other informations. This
1457 * routine is called with the host lock held.
1458 **/
1459 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)1460 __lpfc_update_fcf_record(struct lpfc_hba *phba, struct lpfc_fcf_rec *fcf_rec,
1461 struct fcf_record *new_fcf_record, uint32_t addr_mode,
1462 uint16_t vlan_id, uint32_t flag)
1463 {
1464 lockdep_assert_held(&phba->hbalock);
1465
1466 /* Copy the fields from the HBA's FCF record */
1467 lpfc_copy_fcf_record(fcf_rec, new_fcf_record);
1468 /* Update other fields of driver FCF record */
1469 fcf_rec->addr_mode = addr_mode;
1470 fcf_rec->vlan_id = vlan_id;
1471 fcf_rec->flag |= (flag | RECORD_VALID);
1472 __lpfc_update_fcf_record_pri(phba,
1473 bf_get(lpfc_fcf_record_fcf_index, new_fcf_record),
1474 new_fcf_record);
1475 }
1476
1477 /**
1478 * lpfc_register_fcf - Register the FCF with hba.
1479 * @phba: pointer to lpfc hba data structure.
1480 *
1481 * This routine issues a register fcfi mailbox command to register
1482 * the fcf with HBA.
1483 **/
1484 static void
lpfc_register_fcf(struct lpfc_hba * phba)1485 lpfc_register_fcf(struct lpfc_hba *phba)
1486 {
1487 LPFC_MBOXQ_t *fcf_mbxq;
1488 int rc;
1489
1490 spin_lock_irq(&phba->hbalock);
1491 /* If the FCF is not available do nothing. */
1492 if (!(phba->fcf.fcf_flag & FCF_AVAILABLE)) {
1493 phba->hba_flag &= ~(FCF_TS_INPROG | FCF_RR_INPROG);
1494 spin_unlock_irq(&phba->hbalock);
1495 return;
1496 }
1497
1498 /* The FCF is already registered, start discovery */
1499 if (phba->fcf.fcf_flag & FCF_REGISTERED) {
1500 phba->fcf.fcf_flag |= (FCF_SCAN_DONE | FCF_IN_USE);
1501 phba->hba_flag &= ~FCF_TS_INPROG;
1502 if (phba->pport->port_state != LPFC_FLOGI &&
1503 phba->pport->fc_flag & FC_FABRIC) {
1504 phba->hba_flag |= FCF_RR_INPROG;
1505 spin_unlock_irq(&phba->hbalock);
1506 lpfc_initial_flogi(phba->pport);
1507 return;
1508 }
1509 spin_unlock_irq(&phba->hbalock);
1510 return;
1511 }
1512 spin_unlock_irq(&phba->hbalock);
1513
1514 fcf_mbxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1515 if (!fcf_mbxq) {
1516 spin_lock_irq(&phba->hbalock);
1517 phba->hba_flag &= ~(FCF_TS_INPROG | FCF_RR_INPROG);
1518 spin_unlock_irq(&phba->hbalock);
1519 return;
1520 }
1521
1522 lpfc_reg_fcfi(phba, fcf_mbxq);
1523 fcf_mbxq->vport = phba->pport;
1524 fcf_mbxq->mbox_cmpl = lpfc_mbx_cmpl_reg_fcfi;
1525 rc = lpfc_sli_issue_mbox(phba, fcf_mbxq, MBX_NOWAIT);
1526 if (rc == MBX_NOT_FINISHED) {
1527 spin_lock_irq(&phba->hbalock);
1528 phba->hba_flag &= ~(FCF_TS_INPROG | FCF_RR_INPROG);
1529 spin_unlock_irq(&phba->hbalock);
1530 mempool_free(fcf_mbxq, phba->mbox_mem_pool);
1531 }
1532
1533 return;
1534 }
1535
1536 /**
1537 * lpfc_match_fcf_conn_list - Check if the FCF record can be used for discovery.
1538 * @phba: pointer to lpfc hba data structure.
1539 * @new_fcf_record: pointer to fcf record.
1540 * @boot_flag: Indicates if this record used by boot bios.
1541 * @addr_mode: The address mode to be used by this FCF
1542 * @vlan_id: The vlan id to be used as vlan tagging by this FCF.
1543 *
1544 * This routine compare the fcf record with connect list obtained from the
1545 * config region to decide if this FCF can be used for SAN discovery. It returns
1546 * 1 if this record can be used for SAN discovery else return zero. If this FCF
1547 * record can be used for SAN discovery, the boot_flag will indicate if this FCF
1548 * is used by boot bios and addr_mode will indicate the addressing mode to be
1549 * used for this FCF when the function returns.
1550 * If the FCF record need to be used with a particular vlan id, the vlan is
1551 * set in the vlan_id on return of the function. If not VLAN tagging need to
1552 * be used with the FCF vlan_id will be set to LPFC_FCOE_NULL_VID;
1553 **/
1554 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)1555 lpfc_match_fcf_conn_list(struct lpfc_hba *phba,
1556 struct fcf_record *new_fcf_record,
1557 uint32_t *boot_flag, uint32_t *addr_mode,
1558 uint16_t *vlan_id)
1559 {
1560 struct lpfc_fcf_conn_entry *conn_entry;
1561 int i, j, fcf_vlan_id = 0;
1562
1563 /* Find the lowest VLAN id in the FCF record */
1564 for (i = 0; i < 512; i++) {
1565 if (new_fcf_record->vlan_bitmap[i]) {
1566 fcf_vlan_id = i * 8;
1567 j = 0;
1568 while (!((new_fcf_record->vlan_bitmap[i] >> j) & 1)) {
1569 j++;
1570 fcf_vlan_id++;
1571 }
1572 break;
1573 }
1574 }
1575
1576 /* FCF not valid/available or solicitation in progress */
1577 if (!bf_get(lpfc_fcf_record_fcf_avail, new_fcf_record) ||
1578 !bf_get(lpfc_fcf_record_fcf_valid, new_fcf_record) ||
1579 bf_get(lpfc_fcf_record_fcf_sol, new_fcf_record))
1580 return 0;
1581
1582 if (!(phba->hba_flag & HBA_FIP_SUPPORT)) {
1583 *boot_flag = 0;
1584 *addr_mode = bf_get(lpfc_fcf_record_mac_addr_prov,
1585 new_fcf_record);
1586 if (phba->valid_vlan)
1587 *vlan_id = phba->vlan_id;
1588 else
1589 *vlan_id = LPFC_FCOE_NULL_VID;
1590 return 1;
1591 }
1592
1593 /*
1594 * If there are no FCF connection table entry, driver connect to all
1595 * FCFs.
1596 */
1597 if (list_empty(&phba->fcf_conn_rec_list)) {
1598 *boot_flag = 0;
1599 *addr_mode = bf_get(lpfc_fcf_record_mac_addr_prov,
1600 new_fcf_record);
1601
1602 /*
1603 * When there are no FCF connect entries, use driver's default
1604 * addressing mode - FPMA.
1605 */
1606 if (*addr_mode & LPFC_FCF_FPMA)
1607 *addr_mode = LPFC_FCF_FPMA;
1608
1609 /* If FCF record report a vlan id use that vlan id */
1610 if (fcf_vlan_id)
1611 *vlan_id = fcf_vlan_id;
1612 else
1613 *vlan_id = LPFC_FCOE_NULL_VID;
1614 return 1;
1615 }
1616
1617 list_for_each_entry(conn_entry,
1618 &phba->fcf_conn_rec_list, list) {
1619 if (!(conn_entry->conn_rec.flags & FCFCNCT_VALID))
1620 continue;
1621
1622 if ((conn_entry->conn_rec.flags & FCFCNCT_FBNM_VALID) &&
1623 !lpfc_fab_name_match(conn_entry->conn_rec.fabric_name,
1624 new_fcf_record))
1625 continue;
1626 if ((conn_entry->conn_rec.flags & FCFCNCT_SWNM_VALID) &&
1627 !lpfc_sw_name_match(conn_entry->conn_rec.switch_name,
1628 new_fcf_record))
1629 continue;
1630 if (conn_entry->conn_rec.flags & FCFCNCT_VLAN_VALID) {
1631 /*
1632 * If the vlan bit map does not have the bit set for the
1633 * vlan id to be used, then it is not a match.
1634 */
1635 if (!(new_fcf_record->vlan_bitmap
1636 [conn_entry->conn_rec.vlan_tag / 8] &
1637 (1 << (conn_entry->conn_rec.vlan_tag % 8))))
1638 continue;
1639 }
1640
1641 /*
1642 * If connection record does not support any addressing mode,
1643 * skip the FCF record.
1644 */
1645 if (!(bf_get(lpfc_fcf_record_mac_addr_prov, new_fcf_record)
1646 & (LPFC_FCF_FPMA | LPFC_FCF_SPMA)))
1647 continue;
1648
1649 /*
1650 * Check if the connection record specifies a required
1651 * addressing mode.
1652 */
1653 if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) &&
1654 !(conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED)) {
1655
1656 /*
1657 * If SPMA required but FCF not support this continue.
1658 */
1659 if ((conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) &&
1660 !(bf_get(lpfc_fcf_record_mac_addr_prov,
1661 new_fcf_record) & LPFC_FCF_SPMA))
1662 continue;
1663
1664 /*
1665 * If FPMA required but FCF not support this continue.
1666 */
1667 if (!(conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) &&
1668 !(bf_get(lpfc_fcf_record_mac_addr_prov,
1669 new_fcf_record) & LPFC_FCF_FPMA))
1670 continue;
1671 }
1672
1673 /*
1674 * This fcf record matches filtering criteria.
1675 */
1676 if (conn_entry->conn_rec.flags & FCFCNCT_BOOT)
1677 *boot_flag = 1;
1678 else
1679 *boot_flag = 0;
1680
1681 /*
1682 * If user did not specify any addressing mode, or if the
1683 * preferred addressing mode specified by user is not supported
1684 * by FCF, allow fabric to pick the addressing mode.
1685 */
1686 *addr_mode = bf_get(lpfc_fcf_record_mac_addr_prov,
1687 new_fcf_record);
1688 /*
1689 * If the user specified a required address mode, assign that
1690 * address mode
1691 */
1692 if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) &&
1693 (!(conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED)))
1694 *addr_mode = (conn_entry->conn_rec.flags &
1695 FCFCNCT_AM_SPMA) ?
1696 LPFC_FCF_SPMA : LPFC_FCF_FPMA;
1697 /*
1698 * If the user specified a preferred address mode, use the
1699 * addr mode only if FCF support the addr_mode.
1700 */
1701 else if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) &&
1702 (conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED) &&
1703 (conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) &&
1704 (*addr_mode & LPFC_FCF_SPMA))
1705 *addr_mode = LPFC_FCF_SPMA;
1706 else if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) &&
1707 (conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED) &&
1708 !(conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) &&
1709 (*addr_mode & LPFC_FCF_FPMA))
1710 *addr_mode = LPFC_FCF_FPMA;
1711
1712 /* If matching connect list has a vlan id, use it */
1713 if (conn_entry->conn_rec.flags & FCFCNCT_VLAN_VALID)
1714 *vlan_id = conn_entry->conn_rec.vlan_tag;
1715 /*
1716 * If no vlan id is specified in connect list, use the vlan id
1717 * in the FCF record
1718 */
1719 else if (fcf_vlan_id)
1720 *vlan_id = fcf_vlan_id;
1721 else
1722 *vlan_id = LPFC_FCOE_NULL_VID;
1723
1724 return 1;
1725 }
1726
1727 return 0;
1728 }
1729
1730 /**
1731 * lpfc_check_pending_fcoe_event - Check if there is pending fcoe event.
1732 * @phba: pointer to lpfc hba data structure.
1733 * @unreg_fcf: Unregister FCF if FCF table need to be re-scaned.
1734 *
1735 * This function check if there is any fcoe event pending while driver
1736 * scan FCF entries. If there is any pending event, it will restart the
1737 * FCF saning and return 1 else return 0.
1738 */
1739 int
lpfc_check_pending_fcoe_event(struct lpfc_hba * phba,uint8_t unreg_fcf)1740 lpfc_check_pending_fcoe_event(struct lpfc_hba *phba, uint8_t unreg_fcf)
1741 {
1742 /*
1743 * If the Link is up and no FCoE events while in the
1744 * FCF discovery, no need to restart FCF discovery.
1745 */
1746 if ((phba->link_state >= LPFC_LINK_UP) &&
1747 (phba->fcoe_eventtag == phba->fcoe_eventtag_at_fcf_scan))
1748 return 0;
1749
1750 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
1751 "2768 Pending link or FCF event during current "
1752 "handling of the previous event: link_state:x%x, "
1753 "evt_tag_at_scan:x%x, evt_tag_current:x%x\n",
1754 phba->link_state, phba->fcoe_eventtag_at_fcf_scan,
1755 phba->fcoe_eventtag);
1756
1757 spin_lock_irq(&phba->hbalock);
1758 phba->fcf.fcf_flag &= ~FCF_AVAILABLE;
1759 spin_unlock_irq(&phba->hbalock);
1760
1761 if (phba->link_state >= LPFC_LINK_UP) {
1762 lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY,
1763 "2780 Restart FCF table scan due to "
1764 "pending FCF event:evt_tag_at_scan:x%x, "
1765 "evt_tag_current:x%x\n",
1766 phba->fcoe_eventtag_at_fcf_scan,
1767 phba->fcoe_eventtag);
1768 lpfc_sli4_fcf_scan_read_fcf_rec(phba, LPFC_FCOE_FCF_GET_FIRST);
1769 } else {
1770 /*
1771 * Do not continue FCF discovery and clear FCF_TS_INPROG
1772 * flag
1773 */
1774 lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY,
1775 "2833 Stop FCF discovery process due to link "
1776 "state change (x%x)\n", phba->link_state);
1777 spin_lock_irq(&phba->hbalock);
1778 phba->hba_flag &= ~(FCF_TS_INPROG | FCF_RR_INPROG);
1779 phba->fcf.fcf_flag &= ~(FCF_REDISC_FOV | FCF_DISCOVERY);
1780 spin_unlock_irq(&phba->hbalock);
1781 }
1782
1783 /* Unregister the currently registered FCF if required */
1784 if (unreg_fcf) {
1785 spin_lock_irq(&phba->hbalock);
1786 phba->fcf.fcf_flag &= ~FCF_REGISTERED;
1787 spin_unlock_irq(&phba->hbalock);
1788 lpfc_sli4_unregister_fcf(phba);
1789 }
1790 return 1;
1791 }
1792
1793 /**
1794 * lpfc_sli4_new_fcf_random_select - Randomly select an eligible new fcf record
1795 * @phba: pointer to lpfc hba data structure.
1796 * @fcf_cnt: number of eligible fcf record seen so far.
1797 *
1798 * This function makes an running random selection decision on FCF record to
1799 * use through a sequence of @fcf_cnt eligible FCF records with equal
1800 * probability. To perform integer manunipulation of random numbers with
1801 * size unit32_t, the lower 16 bits of the 32-bit random number returned
1802 * from prandom_u32() are taken as the random random number generated.
1803 *
1804 * Returns true when outcome is for the newly read FCF record should be
1805 * chosen; otherwise, return false when outcome is for keeping the previously
1806 * chosen FCF record.
1807 **/
1808 static bool
lpfc_sli4_new_fcf_random_select(struct lpfc_hba * phba,uint32_t fcf_cnt)1809 lpfc_sli4_new_fcf_random_select(struct lpfc_hba *phba, uint32_t fcf_cnt)
1810 {
1811 uint32_t rand_num;
1812
1813 /* Get 16-bit uniform random number */
1814 rand_num = 0xFFFF & prandom_u32();
1815
1816 /* Decision with probability 1/fcf_cnt */
1817 if ((fcf_cnt * rand_num) < 0xFFFF)
1818 return true;
1819 else
1820 return false;
1821 }
1822
1823 /**
1824 * lpfc_sli4_fcf_rec_mbox_parse - Parse read_fcf mbox command.
1825 * @phba: pointer to lpfc hba data structure.
1826 * @mboxq: pointer to mailbox object.
1827 * @next_fcf_index: pointer to holder of next fcf index.
1828 *
1829 * This routine parses the non-embedded fcf mailbox command by performing the
1830 * necessarily error checking, non-embedded read FCF record mailbox command
1831 * SGE parsing, and endianness swapping.
1832 *
1833 * Returns the pointer to the new FCF record in the non-embedded mailbox
1834 * command DMA memory if successfully, other NULL.
1835 */
1836 static struct fcf_record *
lpfc_sli4_fcf_rec_mbox_parse(struct lpfc_hba * phba,LPFC_MBOXQ_t * mboxq,uint16_t * next_fcf_index)1837 lpfc_sli4_fcf_rec_mbox_parse(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq,
1838 uint16_t *next_fcf_index)
1839 {
1840 void *virt_addr;
1841 struct lpfc_mbx_sge sge;
1842 struct lpfc_mbx_read_fcf_tbl *read_fcf;
1843 uint32_t shdr_status, shdr_add_status, if_type;
1844 union lpfc_sli4_cfg_shdr *shdr;
1845 struct fcf_record *new_fcf_record;
1846
1847 /* Get the first SGE entry from the non-embedded DMA memory. This
1848 * routine only uses a single SGE.
1849 */
1850 lpfc_sli4_mbx_sge_get(mboxq, 0, &sge);
1851 if (unlikely(!mboxq->sge_array)) {
1852 lpfc_printf_log(phba, KERN_ERR, LOG_MBOX,
1853 "2524 Failed to get the non-embedded SGE "
1854 "virtual address\n");
1855 return NULL;
1856 }
1857 virt_addr = mboxq->sge_array->addr[0];
1858
1859 shdr = (union lpfc_sli4_cfg_shdr *)virt_addr;
1860 lpfc_sli_pcimem_bcopy(shdr, shdr,
1861 sizeof(union lpfc_sli4_cfg_shdr));
1862 shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
1863 if_type = bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf);
1864 shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response);
1865 if (shdr_status || shdr_add_status) {
1866 if (shdr_status == STATUS_FCF_TABLE_EMPTY ||
1867 if_type == LPFC_SLI_INTF_IF_TYPE_2)
1868 lpfc_printf_log(phba, KERN_ERR, LOG_FIP,
1869 "2726 READ_FCF_RECORD Indicates empty "
1870 "FCF table.\n");
1871 else
1872 lpfc_printf_log(phba, KERN_ERR, LOG_FIP,
1873 "2521 READ_FCF_RECORD mailbox failed "
1874 "with status x%x add_status x%x, "
1875 "mbx\n", shdr_status, shdr_add_status);
1876 return NULL;
1877 }
1878
1879 /* Interpreting the returned information of the FCF record */
1880 read_fcf = (struct lpfc_mbx_read_fcf_tbl *)virt_addr;
1881 lpfc_sli_pcimem_bcopy(read_fcf, read_fcf,
1882 sizeof(struct lpfc_mbx_read_fcf_tbl));
1883 *next_fcf_index = bf_get(lpfc_mbx_read_fcf_tbl_nxt_vindx, read_fcf);
1884 new_fcf_record = (struct fcf_record *)(virt_addr +
1885 sizeof(struct lpfc_mbx_read_fcf_tbl));
1886 lpfc_sli_pcimem_bcopy(new_fcf_record, new_fcf_record,
1887 offsetof(struct fcf_record, vlan_bitmap));
1888 new_fcf_record->word137 = le32_to_cpu(new_fcf_record->word137);
1889 new_fcf_record->word138 = le32_to_cpu(new_fcf_record->word138);
1890
1891 return new_fcf_record;
1892 }
1893
1894 /**
1895 * lpfc_sli4_log_fcf_record_info - Log the information of a fcf record
1896 * @phba: pointer to lpfc hba data structure.
1897 * @fcf_record: pointer to the fcf record.
1898 * @vlan_id: the lowest vlan identifier associated to this fcf record.
1899 * @next_fcf_index: the index to the next fcf record in hba's fcf table.
1900 *
1901 * This routine logs the detailed FCF record if the LOG_FIP loggin is
1902 * enabled.
1903 **/
1904 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)1905 lpfc_sli4_log_fcf_record_info(struct lpfc_hba *phba,
1906 struct fcf_record *fcf_record,
1907 uint16_t vlan_id,
1908 uint16_t next_fcf_index)
1909 {
1910 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
1911 "2764 READ_FCF_RECORD:\n"
1912 "\tFCF_Index : x%x\n"
1913 "\tFCF_Avail : x%x\n"
1914 "\tFCF_Valid : x%x\n"
1915 "\tFCF_SOL : x%x\n"
1916 "\tFIP_Priority : x%x\n"
1917 "\tMAC_Provider : x%x\n"
1918 "\tLowest VLANID : x%x\n"
1919 "\tFCF_MAC Addr : x%x:%x:%x:%x:%x:%x\n"
1920 "\tFabric_Name : x%x:%x:%x:%x:%x:%x:%x:%x\n"
1921 "\tSwitch_Name : x%x:%x:%x:%x:%x:%x:%x:%x\n"
1922 "\tNext_FCF_Index: x%x\n",
1923 bf_get(lpfc_fcf_record_fcf_index, fcf_record),
1924 bf_get(lpfc_fcf_record_fcf_avail, fcf_record),
1925 bf_get(lpfc_fcf_record_fcf_valid, fcf_record),
1926 bf_get(lpfc_fcf_record_fcf_sol, fcf_record),
1927 fcf_record->fip_priority,
1928 bf_get(lpfc_fcf_record_mac_addr_prov, fcf_record),
1929 vlan_id,
1930 bf_get(lpfc_fcf_record_mac_0, fcf_record),
1931 bf_get(lpfc_fcf_record_mac_1, fcf_record),
1932 bf_get(lpfc_fcf_record_mac_2, fcf_record),
1933 bf_get(lpfc_fcf_record_mac_3, fcf_record),
1934 bf_get(lpfc_fcf_record_mac_4, fcf_record),
1935 bf_get(lpfc_fcf_record_mac_5, fcf_record),
1936 bf_get(lpfc_fcf_record_fab_name_0, fcf_record),
1937 bf_get(lpfc_fcf_record_fab_name_1, fcf_record),
1938 bf_get(lpfc_fcf_record_fab_name_2, fcf_record),
1939 bf_get(lpfc_fcf_record_fab_name_3, fcf_record),
1940 bf_get(lpfc_fcf_record_fab_name_4, fcf_record),
1941 bf_get(lpfc_fcf_record_fab_name_5, fcf_record),
1942 bf_get(lpfc_fcf_record_fab_name_6, fcf_record),
1943 bf_get(lpfc_fcf_record_fab_name_7, fcf_record),
1944 bf_get(lpfc_fcf_record_switch_name_0, fcf_record),
1945 bf_get(lpfc_fcf_record_switch_name_1, fcf_record),
1946 bf_get(lpfc_fcf_record_switch_name_2, fcf_record),
1947 bf_get(lpfc_fcf_record_switch_name_3, fcf_record),
1948 bf_get(lpfc_fcf_record_switch_name_4, fcf_record),
1949 bf_get(lpfc_fcf_record_switch_name_5, fcf_record),
1950 bf_get(lpfc_fcf_record_switch_name_6, fcf_record),
1951 bf_get(lpfc_fcf_record_switch_name_7, fcf_record),
1952 next_fcf_index);
1953 }
1954
1955 /**
1956 lpfc_sli4_fcf_record_match - testing new FCF record for matching existing FCF
1957 * @phba: pointer to lpfc hba data structure.
1958 * @fcf_rec: pointer to an existing FCF record.
1959 * @new_fcf_record: pointer to a new FCF record.
1960 * @new_vlan_id: vlan id from the new FCF record.
1961 *
1962 * This function performs matching test of a new FCF record against an existing
1963 * FCF record. If the new_vlan_id passed in is LPFC_FCOE_IGNORE_VID, vlan id
1964 * will not be used as part of the FCF record matching criteria.
1965 *
1966 * Returns true if all the fields matching, otherwise returns false.
1967 */
1968 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)1969 lpfc_sli4_fcf_record_match(struct lpfc_hba *phba,
1970 struct lpfc_fcf_rec *fcf_rec,
1971 struct fcf_record *new_fcf_record,
1972 uint16_t new_vlan_id)
1973 {
1974 if (new_vlan_id != LPFC_FCOE_IGNORE_VID)
1975 if (!lpfc_vlan_id_match(fcf_rec->vlan_id, new_vlan_id))
1976 return false;
1977 if (!lpfc_mac_addr_match(fcf_rec->mac_addr, new_fcf_record))
1978 return false;
1979 if (!lpfc_sw_name_match(fcf_rec->switch_name, new_fcf_record))
1980 return false;
1981 if (!lpfc_fab_name_match(fcf_rec->fabric_name, new_fcf_record))
1982 return false;
1983 if (fcf_rec->priority != new_fcf_record->fip_priority)
1984 return false;
1985 return true;
1986 }
1987
1988 /**
1989 * lpfc_sli4_fcf_rr_next_proc - processing next roundrobin fcf
1990 * @vport: Pointer to vport object.
1991 * @fcf_index: index to next fcf.
1992 *
1993 * This function processing the roundrobin fcf failover to next fcf index.
1994 * When this function is invoked, there will be a current fcf registered
1995 * for flogi.
1996 * Return: 0 for continue retrying flogi on currently registered fcf;
1997 * 1 for stop flogi on currently registered fcf;
1998 */
lpfc_sli4_fcf_rr_next_proc(struct lpfc_vport * vport,uint16_t fcf_index)1999 int lpfc_sli4_fcf_rr_next_proc(struct lpfc_vport *vport, uint16_t fcf_index)
2000 {
2001 struct lpfc_hba *phba = vport->phba;
2002 int rc;
2003
2004 if (fcf_index == LPFC_FCOE_FCF_NEXT_NONE) {
2005 spin_lock_irq(&phba->hbalock);
2006 if (phba->hba_flag & HBA_DEVLOSS_TMO) {
2007 spin_unlock_irq(&phba->hbalock);
2008 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2009 "2872 Devloss tmo with no eligible "
2010 "FCF, unregister in-use FCF (x%x) "
2011 "and rescan FCF table\n",
2012 phba->fcf.current_rec.fcf_indx);
2013 lpfc_unregister_fcf_rescan(phba);
2014 goto stop_flogi_current_fcf;
2015 }
2016 /* Mark the end to FLOGI roundrobin failover */
2017 phba->hba_flag &= ~FCF_RR_INPROG;
2018 /* Allow action to new fcf asynchronous event */
2019 phba->fcf.fcf_flag &= ~(FCF_AVAILABLE | FCF_SCAN_DONE);
2020 spin_unlock_irq(&phba->hbalock);
2021 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2022 "2865 No FCF available, stop roundrobin FCF "
2023 "failover and change port state:x%x/x%x\n",
2024 phba->pport->port_state, LPFC_VPORT_UNKNOWN);
2025 phba->pport->port_state = LPFC_VPORT_UNKNOWN;
2026
2027 if (!phba->fcf.fcf_redisc_attempted) {
2028 lpfc_unregister_fcf(phba);
2029
2030 rc = lpfc_sli4_redisc_fcf_table(phba);
2031 if (!rc) {
2032 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2033 "3195 Rediscover FCF table\n");
2034 phba->fcf.fcf_redisc_attempted = 1;
2035 lpfc_sli4_clear_fcf_rr_bmask(phba);
2036 } else {
2037 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP,
2038 "3196 Rediscover FCF table "
2039 "failed. Status:x%x\n", rc);
2040 }
2041 } else {
2042 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP,
2043 "3197 Already rediscover FCF table "
2044 "attempted. No more retry\n");
2045 }
2046 goto stop_flogi_current_fcf;
2047 } else {
2048 lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_ELS,
2049 "2794 Try FLOGI roundrobin FCF failover to "
2050 "(x%x)\n", fcf_index);
2051 rc = lpfc_sli4_fcf_rr_read_fcf_rec(phba, fcf_index);
2052 if (rc)
2053 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP | LOG_ELS,
2054 "2761 FLOGI roundrobin FCF failover "
2055 "failed (rc:x%x) to read FCF (x%x)\n",
2056 rc, phba->fcf.current_rec.fcf_indx);
2057 else
2058 goto stop_flogi_current_fcf;
2059 }
2060 return 0;
2061
2062 stop_flogi_current_fcf:
2063 lpfc_can_disctmo(vport);
2064 return 1;
2065 }
2066
2067 /**
2068 * lpfc_sli4_fcf_pri_list_del
2069 * @phba: pointer to lpfc hba data structure.
2070 * @fcf_index the index of the fcf record to delete
2071 * This routine checks the on list flag of the fcf_index to be deleted.
2072 * If it is one the list then it is removed from the list, and the flag
2073 * is cleared. This routine grab the hbalock before removing the fcf
2074 * record from the list.
2075 **/
lpfc_sli4_fcf_pri_list_del(struct lpfc_hba * phba,uint16_t fcf_index)2076 static void lpfc_sli4_fcf_pri_list_del(struct lpfc_hba *phba,
2077 uint16_t fcf_index)
2078 {
2079 struct lpfc_fcf_pri *new_fcf_pri;
2080
2081 new_fcf_pri = &phba->fcf.fcf_pri[fcf_index];
2082 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2083 "3058 deleting idx x%x pri x%x flg x%x\n",
2084 fcf_index, new_fcf_pri->fcf_rec.priority,
2085 new_fcf_pri->fcf_rec.flag);
2086 spin_lock_irq(&phba->hbalock);
2087 if (new_fcf_pri->fcf_rec.flag & LPFC_FCF_ON_PRI_LIST) {
2088 if (phba->fcf.current_rec.priority ==
2089 new_fcf_pri->fcf_rec.priority)
2090 phba->fcf.eligible_fcf_cnt--;
2091 list_del_init(&new_fcf_pri->list);
2092 new_fcf_pri->fcf_rec.flag &= ~LPFC_FCF_ON_PRI_LIST;
2093 }
2094 spin_unlock_irq(&phba->hbalock);
2095 }
2096
2097 /**
2098 * lpfc_sli4_set_fcf_flogi_fail
2099 * @phba: pointer to lpfc hba data structure.
2100 * @fcf_index the index of the fcf record to update
2101 * This routine acquires the hbalock and then set the LPFC_FCF_FLOGI_FAILED
2102 * flag so the the round robin slection for the particular priority level
2103 * will try a different fcf record that does not have this bit set.
2104 * If the fcf record is re-read for any reason this flag is cleared brfore
2105 * adding it to the priority list.
2106 **/
2107 void
lpfc_sli4_set_fcf_flogi_fail(struct lpfc_hba * phba,uint16_t fcf_index)2108 lpfc_sli4_set_fcf_flogi_fail(struct lpfc_hba *phba, uint16_t fcf_index)
2109 {
2110 struct lpfc_fcf_pri *new_fcf_pri;
2111 new_fcf_pri = &phba->fcf.fcf_pri[fcf_index];
2112 spin_lock_irq(&phba->hbalock);
2113 new_fcf_pri->fcf_rec.flag |= LPFC_FCF_FLOGI_FAILED;
2114 spin_unlock_irq(&phba->hbalock);
2115 }
2116
2117 /**
2118 * lpfc_sli4_fcf_pri_list_add
2119 * @phba: pointer to lpfc hba data structure.
2120 * @fcf_index the index of the fcf record to add
2121 * This routine checks the priority of the fcf_index to be added.
2122 * If it is a lower priority than the current head of the fcf_pri list
2123 * then it is added to the list in the right order.
2124 * If it is the same priority as the current head of the list then it
2125 * is added to the head of the list and its bit in the rr_bmask is set.
2126 * If the fcf_index to be added is of a higher priority than the current
2127 * head of the list then the rr_bmask is cleared, its bit is set in the
2128 * rr_bmask and it is added to the head of the list.
2129 * returns:
2130 * 0=success 1=failure
2131 **/
lpfc_sli4_fcf_pri_list_add(struct lpfc_hba * phba,uint16_t fcf_index,struct fcf_record * new_fcf_record)2132 static int lpfc_sli4_fcf_pri_list_add(struct lpfc_hba *phba,
2133 uint16_t fcf_index,
2134 struct fcf_record *new_fcf_record)
2135 {
2136 uint16_t current_fcf_pri;
2137 uint16_t last_index;
2138 struct lpfc_fcf_pri *fcf_pri;
2139 struct lpfc_fcf_pri *next_fcf_pri;
2140 struct lpfc_fcf_pri *new_fcf_pri;
2141 int ret;
2142
2143 new_fcf_pri = &phba->fcf.fcf_pri[fcf_index];
2144 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2145 "3059 adding idx x%x pri x%x flg x%x\n",
2146 fcf_index, new_fcf_record->fip_priority,
2147 new_fcf_pri->fcf_rec.flag);
2148 spin_lock_irq(&phba->hbalock);
2149 if (new_fcf_pri->fcf_rec.flag & LPFC_FCF_ON_PRI_LIST)
2150 list_del_init(&new_fcf_pri->list);
2151 new_fcf_pri->fcf_rec.fcf_index = fcf_index;
2152 new_fcf_pri->fcf_rec.priority = new_fcf_record->fip_priority;
2153 if (list_empty(&phba->fcf.fcf_pri_list)) {
2154 list_add(&new_fcf_pri->list, &phba->fcf.fcf_pri_list);
2155 ret = lpfc_sli4_fcf_rr_index_set(phba,
2156 new_fcf_pri->fcf_rec.fcf_index);
2157 goto out;
2158 }
2159
2160 last_index = find_first_bit(phba->fcf.fcf_rr_bmask,
2161 LPFC_SLI4_FCF_TBL_INDX_MAX);
2162 if (last_index >= LPFC_SLI4_FCF_TBL_INDX_MAX) {
2163 ret = 0; /* Empty rr list */
2164 goto out;
2165 }
2166 current_fcf_pri = phba->fcf.fcf_pri[last_index].fcf_rec.priority;
2167 if (new_fcf_pri->fcf_rec.priority <= current_fcf_pri) {
2168 list_add(&new_fcf_pri->list, &phba->fcf.fcf_pri_list);
2169 if (new_fcf_pri->fcf_rec.priority < current_fcf_pri) {
2170 memset(phba->fcf.fcf_rr_bmask, 0,
2171 sizeof(*phba->fcf.fcf_rr_bmask));
2172 /* fcfs_at_this_priority_level = 1; */
2173 phba->fcf.eligible_fcf_cnt = 1;
2174 } else
2175 /* fcfs_at_this_priority_level++; */
2176 phba->fcf.eligible_fcf_cnt++;
2177 ret = lpfc_sli4_fcf_rr_index_set(phba,
2178 new_fcf_pri->fcf_rec.fcf_index);
2179 goto out;
2180 }
2181
2182 list_for_each_entry_safe(fcf_pri, next_fcf_pri,
2183 &phba->fcf.fcf_pri_list, list) {
2184 if (new_fcf_pri->fcf_rec.priority <=
2185 fcf_pri->fcf_rec.priority) {
2186 if (fcf_pri->list.prev == &phba->fcf.fcf_pri_list)
2187 list_add(&new_fcf_pri->list,
2188 &phba->fcf.fcf_pri_list);
2189 else
2190 list_add(&new_fcf_pri->list,
2191 &((struct lpfc_fcf_pri *)
2192 fcf_pri->list.prev)->list);
2193 ret = 0;
2194 goto out;
2195 } else if (fcf_pri->list.next == &phba->fcf.fcf_pri_list
2196 || new_fcf_pri->fcf_rec.priority <
2197 next_fcf_pri->fcf_rec.priority) {
2198 list_add(&new_fcf_pri->list, &fcf_pri->list);
2199 ret = 0;
2200 goto out;
2201 }
2202 if (new_fcf_pri->fcf_rec.priority > fcf_pri->fcf_rec.priority)
2203 continue;
2204
2205 }
2206 ret = 1;
2207 out:
2208 /* we use = instead of |= to clear the FLOGI_FAILED flag. */
2209 new_fcf_pri->fcf_rec.flag = LPFC_FCF_ON_PRI_LIST;
2210 spin_unlock_irq(&phba->hbalock);
2211 return ret;
2212 }
2213
2214 /**
2215 * lpfc_mbx_cmpl_fcf_scan_read_fcf_rec - fcf scan read_fcf mbox cmpl handler.
2216 * @phba: pointer to lpfc hba data structure.
2217 * @mboxq: pointer to mailbox object.
2218 *
2219 * This function iterates through all the fcf records available in
2220 * HBA and chooses the optimal FCF record for discovery. After finding
2221 * the FCF for discovery it registers the FCF record and kicks start
2222 * discovery.
2223 * If FCF_IN_USE flag is set in currently used FCF, the routine tries to
2224 * use an FCF record which matches fabric name and mac address of the
2225 * currently used FCF record.
2226 * If the driver supports only one FCF, it will try to use the FCF record
2227 * used by BOOT_BIOS.
2228 */
2229 void
lpfc_mbx_cmpl_fcf_scan_read_fcf_rec(struct lpfc_hba * phba,LPFC_MBOXQ_t * mboxq)2230 lpfc_mbx_cmpl_fcf_scan_read_fcf_rec(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
2231 {
2232 struct fcf_record *new_fcf_record;
2233 uint32_t boot_flag, addr_mode;
2234 uint16_t fcf_index, next_fcf_index;
2235 struct lpfc_fcf_rec *fcf_rec = NULL;
2236 uint16_t vlan_id = LPFC_FCOE_NULL_VID;
2237 bool select_new_fcf;
2238 int rc;
2239
2240 /* If there is pending FCoE event restart FCF table scan */
2241 if (lpfc_check_pending_fcoe_event(phba, LPFC_SKIP_UNREG_FCF)) {
2242 lpfc_sli4_mbox_cmd_free(phba, mboxq);
2243 return;
2244 }
2245
2246 /* Parse the FCF record from the non-embedded mailbox command */
2247 new_fcf_record = lpfc_sli4_fcf_rec_mbox_parse(phba, mboxq,
2248 &next_fcf_index);
2249 if (!new_fcf_record) {
2250 lpfc_printf_log(phba, KERN_ERR, LOG_FIP,
2251 "2765 Mailbox command READ_FCF_RECORD "
2252 "failed to retrieve a FCF record.\n");
2253 /* Let next new FCF event trigger fast failover */
2254 spin_lock_irq(&phba->hbalock);
2255 phba->hba_flag &= ~FCF_TS_INPROG;
2256 spin_unlock_irq(&phba->hbalock);
2257 lpfc_sli4_mbox_cmd_free(phba, mboxq);
2258 return;
2259 }
2260
2261 /* Check the FCF record against the connection list */
2262 rc = lpfc_match_fcf_conn_list(phba, new_fcf_record, &boot_flag,
2263 &addr_mode, &vlan_id);
2264
2265 /* Log the FCF record information if turned on */
2266 lpfc_sli4_log_fcf_record_info(phba, new_fcf_record, vlan_id,
2267 next_fcf_index);
2268
2269 /*
2270 * If the fcf record does not match with connect list entries
2271 * read the next entry; otherwise, this is an eligible FCF
2272 * record for roundrobin FCF failover.
2273 */
2274 if (!rc) {
2275 lpfc_sli4_fcf_pri_list_del(phba,
2276 bf_get(lpfc_fcf_record_fcf_index,
2277 new_fcf_record));
2278 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP,
2279 "2781 FCF (x%x) failed connection "
2280 "list check: (x%x/x%x/%x)\n",
2281 bf_get(lpfc_fcf_record_fcf_index,
2282 new_fcf_record),
2283 bf_get(lpfc_fcf_record_fcf_avail,
2284 new_fcf_record),
2285 bf_get(lpfc_fcf_record_fcf_valid,
2286 new_fcf_record),
2287 bf_get(lpfc_fcf_record_fcf_sol,
2288 new_fcf_record));
2289 if ((phba->fcf.fcf_flag & FCF_IN_USE) &&
2290 lpfc_sli4_fcf_record_match(phba, &phba->fcf.current_rec,
2291 new_fcf_record, LPFC_FCOE_IGNORE_VID)) {
2292 if (bf_get(lpfc_fcf_record_fcf_index, new_fcf_record) !=
2293 phba->fcf.current_rec.fcf_indx) {
2294 lpfc_printf_log(phba, KERN_ERR, LOG_FIP,
2295 "2862 FCF (x%x) matches property "
2296 "of in-use FCF (x%x)\n",
2297 bf_get(lpfc_fcf_record_fcf_index,
2298 new_fcf_record),
2299 phba->fcf.current_rec.fcf_indx);
2300 goto read_next_fcf;
2301 }
2302 /*
2303 * In case the current in-use FCF record becomes
2304 * invalid/unavailable during FCF discovery that
2305 * was not triggered by fast FCF failover process,
2306 * treat it as fast FCF failover.
2307 */
2308 if (!(phba->fcf.fcf_flag & FCF_REDISC_PEND) &&
2309 !(phba->fcf.fcf_flag & FCF_REDISC_FOV)) {
2310 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP,
2311 "2835 Invalid in-use FCF "
2312 "(x%x), enter FCF failover "
2313 "table scan.\n",
2314 phba->fcf.current_rec.fcf_indx);
2315 spin_lock_irq(&phba->hbalock);
2316 phba->fcf.fcf_flag |= FCF_REDISC_FOV;
2317 spin_unlock_irq(&phba->hbalock);
2318 lpfc_sli4_mbox_cmd_free(phba, mboxq);
2319 lpfc_sli4_fcf_scan_read_fcf_rec(phba,
2320 LPFC_FCOE_FCF_GET_FIRST);
2321 return;
2322 }
2323 }
2324 goto read_next_fcf;
2325 } else {
2326 fcf_index = bf_get(lpfc_fcf_record_fcf_index, new_fcf_record);
2327 rc = lpfc_sli4_fcf_pri_list_add(phba, fcf_index,
2328 new_fcf_record);
2329 if (rc)
2330 goto read_next_fcf;
2331 }
2332
2333 /*
2334 * If this is not the first FCF discovery of the HBA, use last
2335 * FCF record for the discovery. The condition that a rescan
2336 * matches the in-use FCF record: fabric name, switch name, mac
2337 * address, and vlan_id.
2338 */
2339 spin_lock_irq(&phba->hbalock);
2340 if (phba->fcf.fcf_flag & FCF_IN_USE) {
2341 if (phba->cfg_fcf_failover_policy == LPFC_FCF_FOV &&
2342 lpfc_sli4_fcf_record_match(phba, &phba->fcf.current_rec,
2343 new_fcf_record, vlan_id)) {
2344 if (bf_get(lpfc_fcf_record_fcf_index, new_fcf_record) ==
2345 phba->fcf.current_rec.fcf_indx) {
2346 phba->fcf.fcf_flag |= FCF_AVAILABLE;
2347 if (phba->fcf.fcf_flag & FCF_REDISC_PEND)
2348 /* Stop FCF redisc wait timer */
2349 __lpfc_sli4_stop_fcf_redisc_wait_timer(
2350 phba);
2351 else if (phba->fcf.fcf_flag & FCF_REDISC_FOV)
2352 /* Fast failover, mark completed */
2353 phba->fcf.fcf_flag &= ~FCF_REDISC_FOV;
2354 spin_unlock_irq(&phba->hbalock);
2355 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2356 "2836 New FCF matches in-use "
2357 "FCF (x%x), port_state:x%x, "
2358 "fc_flag:x%x\n",
2359 phba->fcf.current_rec.fcf_indx,
2360 phba->pport->port_state,
2361 phba->pport->fc_flag);
2362 goto out;
2363 } else
2364 lpfc_printf_log(phba, KERN_ERR, LOG_FIP,
2365 "2863 New FCF (x%x) matches "
2366 "property of in-use FCF (x%x)\n",
2367 bf_get(lpfc_fcf_record_fcf_index,
2368 new_fcf_record),
2369 phba->fcf.current_rec.fcf_indx);
2370 }
2371 /*
2372 * Read next FCF record from HBA searching for the matching
2373 * with in-use record only if not during the fast failover
2374 * period. In case of fast failover period, it shall try to
2375 * determine whether the FCF record just read should be the
2376 * next candidate.
2377 */
2378 if (!(phba->fcf.fcf_flag & FCF_REDISC_FOV)) {
2379 spin_unlock_irq(&phba->hbalock);
2380 goto read_next_fcf;
2381 }
2382 }
2383 /*
2384 * Update on failover FCF record only if it's in FCF fast-failover
2385 * period; otherwise, update on current FCF record.
2386 */
2387 if (phba->fcf.fcf_flag & FCF_REDISC_FOV)
2388 fcf_rec = &phba->fcf.failover_rec;
2389 else
2390 fcf_rec = &phba->fcf.current_rec;
2391
2392 if (phba->fcf.fcf_flag & FCF_AVAILABLE) {
2393 /*
2394 * If the driver FCF record does not have boot flag
2395 * set and new hba fcf record has boot flag set, use
2396 * the new hba fcf record.
2397 */
2398 if (boot_flag && !(fcf_rec->flag & BOOT_ENABLE)) {
2399 /* Choose this FCF record */
2400 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2401 "2837 Update current FCF record "
2402 "(x%x) with new FCF record (x%x)\n",
2403 fcf_rec->fcf_indx,
2404 bf_get(lpfc_fcf_record_fcf_index,
2405 new_fcf_record));
2406 __lpfc_update_fcf_record(phba, fcf_rec, new_fcf_record,
2407 addr_mode, vlan_id, BOOT_ENABLE);
2408 spin_unlock_irq(&phba->hbalock);
2409 goto read_next_fcf;
2410 }
2411 /*
2412 * If the driver FCF record has boot flag set and the
2413 * new hba FCF record does not have boot flag, read
2414 * the next FCF record.
2415 */
2416 if (!boot_flag && (fcf_rec->flag & BOOT_ENABLE)) {
2417 spin_unlock_irq(&phba->hbalock);
2418 goto read_next_fcf;
2419 }
2420 /*
2421 * If the new hba FCF record has lower priority value
2422 * than the driver FCF record, use the new record.
2423 */
2424 if (new_fcf_record->fip_priority < fcf_rec->priority) {
2425 /* Choose the new FCF record with lower priority */
2426 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2427 "2838 Update current FCF record "
2428 "(x%x) with new FCF record (x%x)\n",
2429 fcf_rec->fcf_indx,
2430 bf_get(lpfc_fcf_record_fcf_index,
2431 new_fcf_record));
2432 __lpfc_update_fcf_record(phba, fcf_rec, new_fcf_record,
2433 addr_mode, vlan_id, 0);
2434 /* Reset running random FCF selection count */
2435 phba->fcf.eligible_fcf_cnt = 1;
2436 } else if (new_fcf_record->fip_priority == fcf_rec->priority) {
2437 /* Update running random FCF selection count */
2438 phba->fcf.eligible_fcf_cnt++;
2439 select_new_fcf = lpfc_sli4_new_fcf_random_select(phba,
2440 phba->fcf.eligible_fcf_cnt);
2441 if (select_new_fcf) {
2442 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2443 "2839 Update current FCF record "
2444 "(x%x) with new FCF record (x%x)\n",
2445 fcf_rec->fcf_indx,
2446 bf_get(lpfc_fcf_record_fcf_index,
2447 new_fcf_record));
2448 /* Choose the new FCF by random selection */
2449 __lpfc_update_fcf_record(phba, fcf_rec,
2450 new_fcf_record,
2451 addr_mode, vlan_id, 0);
2452 }
2453 }
2454 spin_unlock_irq(&phba->hbalock);
2455 goto read_next_fcf;
2456 }
2457 /*
2458 * This is the first suitable FCF record, choose this record for
2459 * initial best-fit FCF.
2460 */
2461 if (fcf_rec) {
2462 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2463 "2840 Update initial FCF candidate "
2464 "with FCF (x%x)\n",
2465 bf_get(lpfc_fcf_record_fcf_index,
2466 new_fcf_record));
2467 __lpfc_update_fcf_record(phba, fcf_rec, new_fcf_record,
2468 addr_mode, vlan_id, (boot_flag ?
2469 BOOT_ENABLE : 0));
2470 phba->fcf.fcf_flag |= FCF_AVAILABLE;
2471 /* Setup initial running random FCF selection count */
2472 phba->fcf.eligible_fcf_cnt = 1;
2473 }
2474 spin_unlock_irq(&phba->hbalock);
2475 goto read_next_fcf;
2476
2477 read_next_fcf:
2478 lpfc_sli4_mbox_cmd_free(phba, mboxq);
2479 if (next_fcf_index == LPFC_FCOE_FCF_NEXT_NONE || next_fcf_index == 0) {
2480 if (phba->fcf.fcf_flag & FCF_REDISC_FOV) {
2481 /*
2482 * Case of FCF fast failover scan
2483 */
2484
2485 /*
2486 * It has not found any suitable FCF record, cancel
2487 * FCF scan inprogress, and do nothing
2488 */
2489 if (!(phba->fcf.failover_rec.flag & RECORD_VALID)) {
2490 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP,
2491 "2782 No suitable FCF found: "
2492 "(x%x/x%x)\n",
2493 phba->fcoe_eventtag_at_fcf_scan,
2494 bf_get(lpfc_fcf_record_fcf_index,
2495 new_fcf_record));
2496 spin_lock_irq(&phba->hbalock);
2497 if (phba->hba_flag & HBA_DEVLOSS_TMO) {
2498 phba->hba_flag &= ~FCF_TS_INPROG;
2499 spin_unlock_irq(&phba->hbalock);
2500 /* Unregister in-use FCF and rescan */
2501 lpfc_printf_log(phba, KERN_INFO,
2502 LOG_FIP,
2503 "2864 On devloss tmo "
2504 "unreg in-use FCF and "
2505 "rescan FCF table\n");
2506 lpfc_unregister_fcf_rescan(phba);
2507 return;
2508 }
2509 /*
2510 * Let next new FCF event trigger fast failover
2511 */
2512 phba->hba_flag &= ~FCF_TS_INPROG;
2513 spin_unlock_irq(&phba->hbalock);
2514 return;
2515 }
2516 /*
2517 * It has found a suitable FCF record that is not
2518 * the same as in-use FCF record, unregister the
2519 * in-use FCF record, replace the in-use FCF record
2520 * with the new FCF record, mark FCF fast failover
2521 * completed, and then start register the new FCF
2522 * record.
2523 */
2524
2525 /* Unregister the current in-use FCF record */
2526 lpfc_unregister_fcf(phba);
2527
2528 /* Replace in-use record with the new record */
2529 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2530 "2842 Replace in-use FCF (x%x) "
2531 "with failover FCF (x%x)\n",
2532 phba->fcf.current_rec.fcf_indx,
2533 phba->fcf.failover_rec.fcf_indx);
2534 memcpy(&phba->fcf.current_rec,
2535 &phba->fcf.failover_rec,
2536 sizeof(struct lpfc_fcf_rec));
2537 /*
2538 * Mark the fast FCF failover rediscovery completed
2539 * and the start of the first round of the roundrobin
2540 * FCF failover.
2541 */
2542 spin_lock_irq(&phba->hbalock);
2543 phba->fcf.fcf_flag &= ~FCF_REDISC_FOV;
2544 spin_unlock_irq(&phba->hbalock);
2545 /* Register to the new FCF record */
2546 lpfc_register_fcf(phba);
2547 } else {
2548 /*
2549 * In case of transaction period to fast FCF failover,
2550 * do nothing when search to the end of the FCF table.
2551 */
2552 if ((phba->fcf.fcf_flag & FCF_REDISC_EVT) ||
2553 (phba->fcf.fcf_flag & FCF_REDISC_PEND))
2554 return;
2555
2556 if (phba->cfg_fcf_failover_policy == LPFC_FCF_FOV &&
2557 phba->fcf.fcf_flag & FCF_IN_USE) {
2558 /*
2559 * In case the current in-use FCF record no
2560 * longer existed during FCF discovery that
2561 * was not triggered by fast FCF failover
2562 * process, treat it as fast FCF failover.
2563 */
2564 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2565 "2841 In-use FCF record (x%x) "
2566 "not reported, entering fast "
2567 "FCF failover mode scanning.\n",
2568 phba->fcf.current_rec.fcf_indx);
2569 spin_lock_irq(&phba->hbalock);
2570 phba->fcf.fcf_flag |= FCF_REDISC_FOV;
2571 spin_unlock_irq(&phba->hbalock);
2572 lpfc_sli4_fcf_scan_read_fcf_rec(phba,
2573 LPFC_FCOE_FCF_GET_FIRST);
2574 return;
2575 }
2576 /* Register to the new FCF record */
2577 lpfc_register_fcf(phba);
2578 }
2579 } else
2580 lpfc_sli4_fcf_scan_read_fcf_rec(phba, next_fcf_index);
2581 return;
2582
2583 out:
2584 lpfc_sli4_mbox_cmd_free(phba, mboxq);
2585 lpfc_register_fcf(phba);
2586
2587 return;
2588 }
2589
2590 /**
2591 * lpfc_mbx_cmpl_fcf_rr_read_fcf_rec - fcf roundrobin read_fcf mbox cmpl hdler
2592 * @phba: pointer to lpfc hba data structure.
2593 * @mboxq: pointer to mailbox object.
2594 *
2595 * This is the callback function for FLOGI failure roundrobin FCF failover
2596 * read FCF record mailbox command from the eligible FCF record bmask for
2597 * performing the failover. If the FCF read back is not valid/available, it
2598 * fails through to retrying FLOGI to the currently registered FCF again.
2599 * Otherwise, if the FCF read back is valid and available, it will set the
2600 * newly read FCF record to the failover FCF record, unregister currently
2601 * registered FCF record, copy the failover FCF record to the current
2602 * FCF record, and then register the current FCF record before proceeding
2603 * to trying FLOGI on the new failover FCF.
2604 */
2605 void
lpfc_mbx_cmpl_fcf_rr_read_fcf_rec(struct lpfc_hba * phba,LPFC_MBOXQ_t * mboxq)2606 lpfc_mbx_cmpl_fcf_rr_read_fcf_rec(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
2607 {
2608 struct fcf_record *new_fcf_record;
2609 uint32_t boot_flag, addr_mode;
2610 uint16_t next_fcf_index, fcf_index;
2611 uint16_t current_fcf_index;
2612 uint16_t vlan_id;
2613 int rc;
2614
2615 /* If link state is not up, stop the roundrobin failover process */
2616 if (phba->link_state < LPFC_LINK_UP) {
2617 spin_lock_irq(&phba->hbalock);
2618 phba->fcf.fcf_flag &= ~FCF_DISCOVERY;
2619 phba->hba_flag &= ~FCF_RR_INPROG;
2620 spin_unlock_irq(&phba->hbalock);
2621 goto out;
2622 }
2623
2624 /* Parse the FCF record from the non-embedded mailbox command */
2625 new_fcf_record = lpfc_sli4_fcf_rec_mbox_parse(phba, mboxq,
2626 &next_fcf_index);
2627 if (!new_fcf_record) {
2628 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP,
2629 "2766 Mailbox command READ_FCF_RECORD "
2630 "failed to retrieve a FCF record. "
2631 "hba_flg x%x fcf_flg x%x\n", phba->hba_flag,
2632 phba->fcf.fcf_flag);
2633 lpfc_unregister_fcf_rescan(phba);
2634 goto out;
2635 }
2636
2637 /* Get the needed parameters from FCF record */
2638 rc = lpfc_match_fcf_conn_list(phba, new_fcf_record, &boot_flag,
2639 &addr_mode, &vlan_id);
2640
2641 /* Log the FCF record information if turned on */
2642 lpfc_sli4_log_fcf_record_info(phba, new_fcf_record, vlan_id,
2643 next_fcf_index);
2644
2645 fcf_index = bf_get(lpfc_fcf_record_fcf_index, new_fcf_record);
2646 if (!rc) {
2647 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2648 "2848 Remove ineligible FCF (x%x) from "
2649 "from roundrobin bmask\n", fcf_index);
2650 /* Clear roundrobin bmask bit for ineligible FCF */
2651 lpfc_sli4_fcf_rr_index_clear(phba, fcf_index);
2652 /* Perform next round of roundrobin FCF failover */
2653 fcf_index = lpfc_sli4_fcf_rr_next_index_get(phba);
2654 rc = lpfc_sli4_fcf_rr_next_proc(phba->pport, fcf_index);
2655 if (rc)
2656 goto out;
2657 goto error_out;
2658 }
2659
2660 if (fcf_index == phba->fcf.current_rec.fcf_indx) {
2661 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2662 "2760 Perform FLOGI roundrobin FCF failover: "
2663 "FCF (x%x) back to FCF (x%x)\n",
2664 phba->fcf.current_rec.fcf_indx, fcf_index);
2665 /* Wait 500 ms before retrying FLOGI to current FCF */
2666 msleep(500);
2667 lpfc_issue_init_vfi(phba->pport);
2668 goto out;
2669 }
2670
2671 /* Upload new FCF record to the failover FCF record */
2672 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2673 "2834 Update current FCF (x%x) with new FCF (x%x)\n",
2674 phba->fcf.failover_rec.fcf_indx, fcf_index);
2675 spin_lock_irq(&phba->hbalock);
2676 __lpfc_update_fcf_record(phba, &phba->fcf.failover_rec,
2677 new_fcf_record, addr_mode, vlan_id,
2678 (boot_flag ? BOOT_ENABLE : 0));
2679 spin_unlock_irq(&phba->hbalock);
2680
2681 current_fcf_index = phba->fcf.current_rec.fcf_indx;
2682
2683 /* Unregister the current in-use FCF record */
2684 lpfc_unregister_fcf(phba);
2685
2686 /* Replace in-use record with the new record */
2687 memcpy(&phba->fcf.current_rec, &phba->fcf.failover_rec,
2688 sizeof(struct lpfc_fcf_rec));
2689
2690 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2691 "2783 Perform FLOGI roundrobin FCF failover: FCF "
2692 "(x%x) to FCF (x%x)\n", current_fcf_index, fcf_index);
2693
2694 error_out:
2695 lpfc_register_fcf(phba);
2696 out:
2697 lpfc_sli4_mbox_cmd_free(phba, mboxq);
2698 }
2699
2700 /**
2701 * lpfc_mbx_cmpl_read_fcf_rec - read fcf completion handler.
2702 * @phba: pointer to lpfc hba data structure.
2703 * @mboxq: pointer to mailbox object.
2704 *
2705 * This is the callback function of read FCF record mailbox command for
2706 * updating the eligible FCF bmask for FLOGI failure roundrobin FCF
2707 * failover when a new FCF event happened. If the FCF read back is
2708 * valid/available and it passes the connection list check, it updates
2709 * the bmask for the eligible FCF record for roundrobin failover.
2710 */
2711 void
lpfc_mbx_cmpl_read_fcf_rec(struct lpfc_hba * phba,LPFC_MBOXQ_t * mboxq)2712 lpfc_mbx_cmpl_read_fcf_rec(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
2713 {
2714 struct fcf_record *new_fcf_record;
2715 uint32_t boot_flag, addr_mode;
2716 uint16_t fcf_index, next_fcf_index;
2717 uint16_t vlan_id;
2718 int rc;
2719
2720 /* If link state is not up, no need to proceed */
2721 if (phba->link_state < LPFC_LINK_UP)
2722 goto out;
2723
2724 /* If FCF discovery period is over, no need to proceed */
2725 if (!(phba->fcf.fcf_flag & FCF_DISCOVERY))
2726 goto out;
2727
2728 /* Parse the FCF record from the non-embedded mailbox command */
2729 new_fcf_record = lpfc_sli4_fcf_rec_mbox_parse(phba, mboxq,
2730 &next_fcf_index);
2731 if (!new_fcf_record) {
2732 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2733 "2767 Mailbox command READ_FCF_RECORD "
2734 "failed to retrieve a FCF record.\n");
2735 goto out;
2736 }
2737
2738 /* Check the connection list for eligibility */
2739 rc = lpfc_match_fcf_conn_list(phba, new_fcf_record, &boot_flag,
2740 &addr_mode, &vlan_id);
2741
2742 /* Log the FCF record information if turned on */
2743 lpfc_sli4_log_fcf_record_info(phba, new_fcf_record, vlan_id,
2744 next_fcf_index);
2745
2746 if (!rc)
2747 goto out;
2748
2749 /* Update the eligible FCF record index bmask */
2750 fcf_index = bf_get(lpfc_fcf_record_fcf_index, new_fcf_record);
2751
2752 rc = lpfc_sli4_fcf_pri_list_add(phba, fcf_index, new_fcf_record);
2753
2754 out:
2755 lpfc_sli4_mbox_cmd_free(phba, mboxq);
2756 }
2757
2758 /**
2759 * lpfc_init_vfi_cmpl - Completion handler for init_vfi mbox command.
2760 * @phba: pointer to lpfc hba data structure.
2761 * @mboxq: pointer to mailbox data structure.
2762 *
2763 * This function handles completion of init vfi mailbox command.
2764 */
2765 static void
lpfc_init_vfi_cmpl(struct lpfc_hba * phba,LPFC_MBOXQ_t * mboxq)2766 lpfc_init_vfi_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
2767 {
2768 struct lpfc_vport *vport = mboxq->vport;
2769
2770 /*
2771 * VFI not supported on interface type 0, just do the flogi
2772 * Also continue if the VFI is in use - just use the same one.
2773 */
2774 if (mboxq->u.mb.mbxStatus &&
2775 (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) !=
2776 LPFC_SLI_INTF_IF_TYPE_0) &&
2777 mboxq->u.mb.mbxStatus != MBX_VFI_IN_USE) {
2778 lpfc_printf_vlog(vport, KERN_ERR,
2779 LOG_MBOX,
2780 "2891 Init VFI mailbox failed 0x%x\n",
2781 mboxq->u.mb.mbxStatus);
2782 mempool_free(mboxq, phba->mbox_mem_pool);
2783 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
2784 return;
2785 }
2786
2787 lpfc_initial_flogi(vport);
2788 mempool_free(mboxq, phba->mbox_mem_pool);
2789 return;
2790 }
2791
2792 /**
2793 * lpfc_issue_init_vfi - Issue init_vfi mailbox command.
2794 * @vport: pointer to lpfc_vport data structure.
2795 *
2796 * This function issue a init_vfi mailbox command to initialize the VFI and
2797 * VPI for the physical port.
2798 */
2799 void
lpfc_issue_init_vfi(struct lpfc_vport * vport)2800 lpfc_issue_init_vfi(struct lpfc_vport *vport)
2801 {
2802 LPFC_MBOXQ_t *mboxq;
2803 int rc;
2804 struct lpfc_hba *phba = vport->phba;
2805
2806 mboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
2807 if (!mboxq) {
2808 lpfc_printf_vlog(vport, KERN_ERR,
2809 LOG_MBOX, "2892 Failed to allocate "
2810 "init_vfi mailbox\n");
2811 return;
2812 }
2813 lpfc_init_vfi(mboxq, vport);
2814 mboxq->mbox_cmpl = lpfc_init_vfi_cmpl;
2815 rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_NOWAIT);
2816 if (rc == MBX_NOT_FINISHED) {
2817 lpfc_printf_vlog(vport, KERN_ERR,
2818 LOG_MBOX, "2893 Failed to issue init_vfi mailbox\n");
2819 mempool_free(mboxq, vport->phba->mbox_mem_pool);
2820 }
2821 }
2822
2823 /**
2824 * lpfc_init_vpi_cmpl - Completion handler for init_vpi mbox command.
2825 * @phba: pointer to lpfc hba data structure.
2826 * @mboxq: pointer to mailbox data structure.
2827 *
2828 * This function handles completion of init vpi mailbox command.
2829 */
2830 void
lpfc_init_vpi_cmpl(struct lpfc_hba * phba,LPFC_MBOXQ_t * mboxq)2831 lpfc_init_vpi_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
2832 {
2833 struct lpfc_vport *vport = mboxq->vport;
2834 struct lpfc_nodelist *ndlp;
2835 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2836
2837 if (mboxq->u.mb.mbxStatus) {
2838 lpfc_printf_vlog(vport, KERN_ERR,
2839 LOG_MBOX,
2840 "2609 Init VPI mailbox failed 0x%x\n",
2841 mboxq->u.mb.mbxStatus);
2842 mempool_free(mboxq, phba->mbox_mem_pool);
2843 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
2844 return;
2845 }
2846 spin_lock_irq(shost->host_lock);
2847 vport->fc_flag &= ~FC_VPORT_NEEDS_INIT_VPI;
2848 spin_unlock_irq(shost->host_lock);
2849
2850 /* If this port is physical port or FDISC is done, do reg_vpi */
2851 if ((phba->pport == vport) || (vport->port_state == LPFC_FDISC)) {
2852 ndlp = lpfc_findnode_did(vport, Fabric_DID);
2853 if (!ndlp)
2854 lpfc_printf_vlog(vport, KERN_ERR,
2855 LOG_DISCOVERY,
2856 "2731 Cannot find fabric "
2857 "controller node\n");
2858 else
2859 lpfc_register_new_vport(phba, vport, ndlp);
2860 mempool_free(mboxq, phba->mbox_mem_pool);
2861 return;
2862 }
2863
2864 if (phba->link_flag & LS_NPIV_FAB_SUPPORTED)
2865 lpfc_initial_fdisc(vport);
2866 else {
2867 lpfc_vport_set_state(vport, FC_VPORT_NO_FABRIC_SUPP);
2868 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
2869 "2606 No NPIV Fabric support\n");
2870 }
2871 mempool_free(mboxq, phba->mbox_mem_pool);
2872 return;
2873 }
2874
2875 /**
2876 * lpfc_issue_init_vpi - Issue init_vpi mailbox command.
2877 * @vport: pointer to lpfc_vport data structure.
2878 *
2879 * This function issue a init_vpi mailbox command to initialize
2880 * VPI for the vport.
2881 */
2882 void
lpfc_issue_init_vpi(struct lpfc_vport * vport)2883 lpfc_issue_init_vpi(struct lpfc_vport *vport)
2884 {
2885 LPFC_MBOXQ_t *mboxq;
2886 int rc, vpi;
2887
2888 if ((vport->port_type != LPFC_PHYSICAL_PORT) && (!vport->vpi)) {
2889 vpi = lpfc_alloc_vpi(vport->phba);
2890 if (!vpi) {
2891 lpfc_printf_vlog(vport, KERN_ERR,
2892 LOG_MBOX,
2893 "3303 Failed to obtain vport vpi\n");
2894 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
2895 return;
2896 }
2897 vport->vpi = vpi;
2898 }
2899
2900 mboxq = mempool_alloc(vport->phba->mbox_mem_pool, GFP_KERNEL);
2901 if (!mboxq) {
2902 lpfc_printf_vlog(vport, KERN_ERR,
2903 LOG_MBOX, "2607 Failed to allocate "
2904 "init_vpi mailbox\n");
2905 return;
2906 }
2907 lpfc_init_vpi(vport->phba, mboxq, vport->vpi);
2908 mboxq->vport = vport;
2909 mboxq->mbox_cmpl = lpfc_init_vpi_cmpl;
2910 rc = lpfc_sli_issue_mbox(vport->phba, mboxq, MBX_NOWAIT);
2911 if (rc == MBX_NOT_FINISHED) {
2912 lpfc_printf_vlog(vport, KERN_ERR,
2913 LOG_MBOX, "2608 Failed to issue init_vpi mailbox\n");
2914 mempool_free(mboxq, vport->phba->mbox_mem_pool);
2915 }
2916 }
2917
2918 /**
2919 * lpfc_start_fdiscs - send fdiscs for each vports on this port.
2920 * @phba: pointer to lpfc hba data structure.
2921 *
2922 * This function loops through the list of vports on the @phba and issues an
2923 * FDISC if possible.
2924 */
2925 void
lpfc_start_fdiscs(struct lpfc_hba * phba)2926 lpfc_start_fdiscs(struct lpfc_hba *phba)
2927 {
2928 struct lpfc_vport **vports;
2929 int i;
2930
2931 vports = lpfc_create_vport_work_array(phba);
2932 if (vports != NULL) {
2933 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
2934 if (vports[i]->port_type == LPFC_PHYSICAL_PORT)
2935 continue;
2936 /* There are no vpi for this vport */
2937 if (vports[i]->vpi > phba->max_vpi) {
2938 lpfc_vport_set_state(vports[i],
2939 FC_VPORT_FAILED);
2940 continue;
2941 }
2942 if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
2943 lpfc_vport_set_state(vports[i],
2944 FC_VPORT_LINKDOWN);
2945 continue;
2946 }
2947 if (vports[i]->fc_flag & FC_VPORT_NEEDS_INIT_VPI) {
2948 lpfc_issue_init_vpi(vports[i]);
2949 continue;
2950 }
2951 if (phba->link_flag & LS_NPIV_FAB_SUPPORTED)
2952 lpfc_initial_fdisc(vports[i]);
2953 else {
2954 lpfc_vport_set_state(vports[i],
2955 FC_VPORT_NO_FABRIC_SUPP);
2956 lpfc_printf_vlog(vports[i], KERN_ERR,
2957 LOG_ELS,
2958 "0259 No NPIV "
2959 "Fabric support\n");
2960 }
2961 }
2962 }
2963 lpfc_destroy_vport_work_array(phba, vports);
2964 }
2965
2966 void
lpfc_mbx_cmpl_reg_vfi(struct lpfc_hba * phba,LPFC_MBOXQ_t * mboxq)2967 lpfc_mbx_cmpl_reg_vfi(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
2968 {
2969 struct lpfc_dmabuf *dmabuf = mboxq->ctx_buf;
2970 struct lpfc_vport *vport = mboxq->vport;
2971 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2972
2973 /*
2974 * VFI not supported for interface type 0, so ignore any mailbox
2975 * error (except VFI in use) and continue with the discovery.
2976 */
2977 if (mboxq->u.mb.mbxStatus &&
2978 (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) !=
2979 LPFC_SLI_INTF_IF_TYPE_0) &&
2980 mboxq->u.mb.mbxStatus != MBX_VFI_IN_USE) {
2981 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
2982 "2018 REG_VFI mbxStatus error x%x "
2983 "HBA state x%x\n",
2984 mboxq->u.mb.mbxStatus, vport->port_state);
2985 if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
2986 /* FLOGI failed, use loop map to make discovery list */
2987 lpfc_disc_list_loopmap(vport);
2988 /* Start discovery */
2989 lpfc_disc_start(vport);
2990 goto out_free_mem;
2991 }
2992 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
2993 goto out_free_mem;
2994 }
2995
2996 /* If the VFI is already registered, there is nothing else to do
2997 * Unless this was a VFI update and we are in PT2PT mode, then
2998 * we should drop through to set the port state to ready.
2999 */
3000 if (vport->fc_flag & FC_VFI_REGISTERED)
3001 if (!(phba->sli_rev == LPFC_SLI_REV4 &&
3002 vport->fc_flag & FC_PT2PT))
3003 goto out_free_mem;
3004
3005 /* The VPI is implicitly registered when the VFI is registered */
3006 spin_lock_irq(shost->host_lock);
3007 vport->vpi_state |= LPFC_VPI_REGISTERED;
3008 vport->fc_flag |= FC_VFI_REGISTERED;
3009 vport->fc_flag &= ~FC_VPORT_NEEDS_REG_VPI;
3010 vport->fc_flag &= ~FC_VPORT_NEEDS_INIT_VPI;
3011 spin_unlock_irq(shost->host_lock);
3012
3013 /* In case SLI4 FC loopback test, we are ready */
3014 if ((phba->sli_rev == LPFC_SLI_REV4) &&
3015 (phba->link_flag & LS_LOOPBACK_MODE)) {
3016 phba->link_state = LPFC_HBA_READY;
3017 goto out_free_mem;
3018 }
3019
3020 lpfc_printf_vlog(vport, KERN_INFO, LOG_SLI,
3021 "3313 cmpl reg vfi port_state:%x fc_flag:%x myDid:%x "
3022 "alpacnt:%d LinkState:%x topology:%x\n",
3023 vport->port_state, vport->fc_flag, vport->fc_myDID,
3024 vport->phba->alpa_map[0],
3025 phba->link_state, phba->fc_topology);
3026
3027 if (vport->port_state == LPFC_FABRIC_CFG_LINK) {
3028 /*
3029 * For private loop or for NPort pt2pt,
3030 * just start discovery and we are done.
3031 */
3032 if ((vport->fc_flag & FC_PT2PT) ||
3033 ((phba->fc_topology == LPFC_TOPOLOGY_LOOP) &&
3034 !(vport->fc_flag & FC_PUBLIC_LOOP))) {
3035
3036 /* Use loop map to make discovery list */
3037 lpfc_disc_list_loopmap(vport);
3038 /* Start discovery */
3039 if (vport->fc_flag & FC_PT2PT)
3040 vport->port_state = LPFC_VPORT_READY;
3041 else
3042 lpfc_disc_start(vport);
3043 } else {
3044 lpfc_start_fdiscs(phba);
3045 lpfc_do_scr_ns_plogi(phba, vport);
3046 }
3047 }
3048
3049 out_free_mem:
3050 mempool_free(mboxq, phba->mbox_mem_pool);
3051 if (dmabuf) {
3052 lpfc_mbuf_free(phba, dmabuf->virt, dmabuf->phys);
3053 kfree(dmabuf);
3054 }
3055 return;
3056 }
3057
3058 static void
lpfc_mbx_cmpl_read_sparam(struct lpfc_hba * phba,LPFC_MBOXQ_t * pmb)3059 lpfc_mbx_cmpl_read_sparam(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
3060 {
3061 MAILBOX_t *mb = &pmb->u.mb;
3062 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *)pmb->ctx_buf;
3063 struct lpfc_vport *vport = pmb->vport;
3064 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3065 struct serv_parm *sp = &vport->fc_sparam;
3066 uint32_t ed_tov;
3067
3068 /* Check for error */
3069 if (mb->mbxStatus) {
3070 /* READ_SPARAM mbox error <mbxStatus> state <hba_state> */
3071 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
3072 "0319 READ_SPARAM mbxStatus error x%x "
3073 "hba state x%x>\n",
3074 mb->mbxStatus, vport->port_state);
3075 lpfc_linkdown(phba);
3076 goto out;
3077 }
3078
3079 memcpy((uint8_t *) &vport->fc_sparam, (uint8_t *) mp->virt,
3080 sizeof (struct serv_parm));
3081
3082 ed_tov = be32_to_cpu(sp->cmn.e_d_tov);
3083 if (sp->cmn.edtovResolution) /* E_D_TOV ticks are in nanoseconds */
3084 ed_tov = (ed_tov + 999999) / 1000000;
3085
3086 phba->fc_edtov = ed_tov;
3087 phba->fc_ratov = (2 * ed_tov) / 1000;
3088 if (phba->fc_ratov < FF_DEF_RATOV) {
3089 /* RA_TOV should be atleast 10sec for initial flogi */
3090 phba->fc_ratov = FF_DEF_RATOV;
3091 }
3092
3093 lpfc_update_vport_wwn(vport);
3094 fc_host_port_name(shost) = wwn_to_u64(vport->fc_portname.u.wwn);
3095 if (vport->port_type == LPFC_PHYSICAL_PORT) {
3096 memcpy(&phba->wwnn, &vport->fc_nodename, sizeof(phba->wwnn));
3097 memcpy(&phba->wwpn, &vport->fc_portname, sizeof(phba->wwnn));
3098 }
3099
3100 lpfc_mbuf_free(phba, mp->virt, mp->phys);
3101 kfree(mp);
3102 mempool_free(pmb, phba->mbox_mem_pool);
3103 return;
3104
3105 out:
3106 pmb->ctx_buf = NULL;
3107 lpfc_mbuf_free(phba, mp->virt, mp->phys);
3108 kfree(mp);
3109 lpfc_issue_clear_la(phba, vport);
3110 mempool_free(pmb, phba->mbox_mem_pool);
3111 return;
3112 }
3113
3114 static void
lpfc_mbx_process_link_up(struct lpfc_hba * phba,struct lpfc_mbx_read_top * la)3115 lpfc_mbx_process_link_up(struct lpfc_hba *phba, struct lpfc_mbx_read_top *la)
3116 {
3117 struct lpfc_vport *vport = phba->pport;
3118 LPFC_MBOXQ_t *sparam_mbox, *cfglink_mbox = NULL;
3119 struct Scsi_Host *shost;
3120 int i;
3121 struct lpfc_dmabuf *mp;
3122 int rc;
3123 struct fcf_record *fcf_record;
3124 uint32_t fc_flags = 0;
3125 unsigned long iflags;
3126
3127 spin_lock_irqsave(&phba->hbalock, iflags);
3128 phba->fc_linkspeed = bf_get(lpfc_mbx_read_top_link_spd, la);
3129
3130 if (!(phba->hba_flag & HBA_FCOE_MODE)) {
3131 switch (bf_get(lpfc_mbx_read_top_link_spd, la)) {
3132 case LPFC_LINK_SPEED_1GHZ:
3133 case LPFC_LINK_SPEED_2GHZ:
3134 case LPFC_LINK_SPEED_4GHZ:
3135 case LPFC_LINK_SPEED_8GHZ:
3136 case LPFC_LINK_SPEED_10GHZ:
3137 case LPFC_LINK_SPEED_16GHZ:
3138 case LPFC_LINK_SPEED_32GHZ:
3139 case LPFC_LINK_SPEED_64GHZ:
3140 case LPFC_LINK_SPEED_128GHZ:
3141 break;
3142 default:
3143 phba->fc_linkspeed = LPFC_LINK_SPEED_UNKNOWN;
3144 break;
3145 }
3146 }
3147
3148 if (phba->fc_topology &&
3149 phba->fc_topology != bf_get(lpfc_mbx_read_top_topology, la)) {
3150 lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
3151 "3314 Toplogy changed was 0x%x is 0x%x\n",
3152 phba->fc_topology,
3153 bf_get(lpfc_mbx_read_top_topology, la));
3154 phba->fc_topology_changed = 1;
3155 }
3156
3157 phba->fc_topology = bf_get(lpfc_mbx_read_top_topology, la);
3158 phba->link_flag &= ~LS_NPIV_FAB_SUPPORTED;
3159
3160 shost = lpfc_shost_from_vport(vport);
3161 if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
3162 phba->sli3_options &= ~LPFC_SLI3_NPIV_ENABLED;
3163
3164 /* if npiv is enabled and this adapter supports npiv log
3165 * a message that npiv is not supported in this topology
3166 */
3167 if (phba->cfg_enable_npiv && phba->max_vpi)
3168 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
3169 "1309 Link Up Event npiv not supported in loop "
3170 "topology\n");
3171 /* Get Loop Map information */
3172 if (bf_get(lpfc_mbx_read_top_il, la))
3173 fc_flags |= FC_LBIT;
3174
3175 vport->fc_myDID = bf_get(lpfc_mbx_read_top_alpa_granted, la);
3176 i = la->lilpBde64.tus.f.bdeSize;
3177
3178 if (i == 0) {
3179 phba->alpa_map[0] = 0;
3180 } else {
3181 if (vport->cfg_log_verbose & LOG_LINK_EVENT) {
3182 int numalpa, j, k;
3183 union {
3184 uint8_t pamap[16];
3185 struct {
3186 uint32_t wd1;
3187 uint32_t wd2;
3188 uint32_t wd3;
3189 uint32_t wd4;
3190 } pa;
3191 } un;
3192 numalpa = phba->alpa_map[0];
3193 j = 0;
3194 while (j < numalpa) {
3195 memset(un.pamap, 0, 16);
3196 for (k = 1; j < numalpa; k++) {
3197 un.pamap[k - 1] =
3198 phba->alpa_map[j + 1];
3199 j++;
3200 if (k == 16)
3201 break;
3202 }
3203 /* Link Up Event ALPA map */
3204 lpfc_printf_log(phba,
3205 KERN_WARNING,
3206 LOG_LINK_EVENT,
3207 "1304 Link Up Event "
3208 "ALPA map Data: x%x "
3209 "x%x x%x x%x\n",
3210 un.pa.wd1, un.pa.wd2,
3211 un.pa.wd3, un.pa.wd4);
3212 }
3213 }
3214 }
3215 } else {
3216 if (!(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)) {
3217 if (phba->max_vpi && phba->cfg_enable_npiv &&
3218 (phba->sli_rev >= LPFC_SLI_REV3))
3219 phba->sli3_options |= LPFC_SLI3_NPIV_ENABLED;
3220 }
3221 vport->fc_myDID = phba->fc_pref_DID;
3222 fc_flags |= FC_LBIT;
3223 }
3224 spin_unlock_irqrestore(&phba->hbalock, iflags);
3225
3226 if (fc_flags) {
3227 spin_lock_irqsave(shost->host_lock, iflags);
3228 vport->fc_flag |= fc_flags;
3229 spin_unlock_irqrestore(shost->host_lock, iflags);
3230 }
3231
3232 lpfc_linkup(phba);
3233 sparam_mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
3234 if (!sparam_mbox)
3235 goto out;
3236
3237 rc = lpfc_read_sparam(phba, sparam_mbox, 0);
3238 if (rc) {
3239 mempool_free(sparam_mbox, phba->mbox_mem_pool);
3240 goto out;
3241 }
3242 sparam_mbox->vport = vport;
3243 sparam_mbox->mbox_cmpl = lpfc_mbx_cmpl_read_sparam;
3244 rc = lpfc_sli_issue_mbox(phba, sparam_mbox, MBX_NOWAIT);
3245 if (rc == MBX_NOT_FINISHED) {
3246 mp = (struct lpfc_dmabuf *)sparam_mbox->ctx_buf;
3247 lpfc_mbuf_free(phba, mp->virt, mp->phys);
3248 kfree(mp);
3249 mempool_free(sparam_mbox, phba->mbox_mem_pool);
3250 goto out;
3251 }
3252
3253 if (!(phba->hba_flag & HBA_FCOE_MODE)) {
3254 cfglink_mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
3255 if (!cfglink_mbox)
3256 goto out;
3257 vport->port_state = LPFC_LOCAL_CFG_LINK;
3258 lpfc_config_link(phba, cfglink_mbox);
3259 cfglink_mbox->vport = vport;
3260 cfglink_mbox->mbox_cmpl = lpfc_mbx_cmpl_local_config_link;
3261 rc = lpfc_sli_issue_mbox(phba, cfglink_mbox, MBX_NOWAIT);
3262 if (rc == MBX_NOT_FINISHED) {
3263 mempool_free(cfglink_mbox, phba->mbox_mem_pool);
3264 goto out;
3265 }
3266 } else {
3267 vport->port_state = LPFC_VPORT_UNKNOWN;
3268 /*
3269 * Add the driver's default FCF record at FCF index 0 now. This
3270 * is phase 1 implementation that support FCF index 0 and driver
3271 * defaults.
3272 */
3273 if (!(phba->hba_flag & HBA_FIP_SUPPORT)) {
3274 fcf_record = kzalloc(sizeof(struct fcf_record),
3275 GFP_KERNEL);
3276 if (unlikely(!fcf_record)) {
3277 lpfc_printf_log(phba, KERN_ERR,
3278 LOG_MBOX | LOG_SLI,
3279 "2554 Could not allocate memory for "
3280 "fcf record\n");
3281 rc = -ENODEV;
3282 goto out;
3283 }
3284
3285 lpfc_sli4_build_dflt_fcf_record(phba, fcf_record,
3286 LPFC_FCOE_FCF_DEF_INDEX);
3287 rc = lpfc_sli4_add_fcf_record(phba, fcf_record);
3288 if (unlikely(rc)) {
3289 lpfc_printf_log(phba, KERN_ERR,
3290 LOG_MBOX | LOG_SLI,
3291 "2013 Could not manually add FCF "
3292 "record 0, status %d\n", rc);
3293 rc = -ENODEV;
3294 kfree(fcf_record);
3295 goto out;
3296 }
3297 kfree(fcf_record);
3298 }
3299 /*
3300 * The driver is expected to do FIP/FCF. Call the port
3301 * and get the FCF Table.
3302 */
3303 spin_lock_irqsave(&phba->hbalock, iflags);
3304 if (phba->hba_flag & FCF_TS_INPROG) {
3305 spin_unlock_irqrestore(&phba->hbalock, iflags);
3306 return;
3307 }
3308 /* This is the initial FCF discovery scan */
3309 phba->fcf.fcf_flag |= FCF_INIT_DISC;
3310 spin_unlock_irqrestore(&phba->hbalock, iflags);
3311 lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY,
3312 "2778 Start FCF table scan at linkup\n");
3313 rc = lpfc_sli4_fcf_scan_read_fcf_rec(phba,
3314 LPFC_FCOE_FCF_GET_FIRST);
3315 if (rc) {
3316 spin_lock_irqsave(&phba->hbalock, iflags);
3317 phba->fcf.fcf_flag &= ~FCF_INIT_DISC;
3318 spin_unlock_irqrestore(&phba->hbalock, iflags);
3319 goto out;
3320 }
3321 /* Reset FCF roundrobin bmask for new discovery */
3322 lpfc_sli4_clear_fcf_rr_bmask(phba);
3323 }
3324
3325 return;
3326 out:
3327 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
3328 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
3329 "0263 Discovery Mailbox error: state: 0x%x : x%px x%px\n",
3330 vport->port_state, sparam_mbox, cfglink_mbox);
3331 lpfc_issue_clear_la(phba, vport);
3332 return;
3333 }
3334
3335 static void
lpfc_enable_la(struct lpfc_hba * phba)3336 lpfc_enable_la(struct lpfc_hba *phba)
3337 {
3338 uint32_t control;
3339 struct lpfc_sli *psli = &phba->sli;
3340 spin_lock_irq(&phba->hbalock);
3341 psli->sli_flag |= LPFC_PROCESS_LA;
3342 if (phba->sli_rev <= LPFC_SLI_REV3) {
3343 control = readl(phba->HCregaddr);
3344 control |= HC_LAINT_ENA;
3345 writel(control, phba->HCregaddr);
3346 readl(phba->HCregaddr); /* flush */
3347 }
3348 spin_unlock_irq(&phba->hbalock);
3349 }
3350
3351 static void
lpfc_mbx_issue_link_down(struct lpfc_hba * phba)3352 lpfc_mbx_issue_link_down(struct lpfc_hba *phba)
3353 {
3354 lpfc_linkdown(phba);
3355 lpfc_enable_la(phba);
3356 lpfc_unregister_unused_fcf(phba);
3357 /* turn on Link Attention interrupts - no CLEAR_LA needed */
3358 }
3359
3360
3361 /*
3362 * This routine handles processing a READ_TOPOLOGY mailbox
3363 * command upon completion. It is setup in the LPFC_MBOXQ
3364 * as the completion routine when the command is
3365 * handed off to the SLI layer. SLI4 only.
3366 */
3367 void
lpfc_mbx_cmpl_read_topology(struct lpfc_hba * phba,LPFC_MBOXQ_t * pmb)3368 lpfc_mbx_cmpl_read_topology(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
3369 {
3370 struct lpfc_vport *vport = pmb->vport;
3371 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3372 struct lpfc_mbx_read_top *la;
3373 struct lpfc_sli_ring *pring;
3374 MAILBOX_t *mb = &pmb->u.mb;
3375 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *)(pmb->ctx_buf);
3376 uint8_t attn_type;
3377 unsigned long iflags;
3378
3379 /* Unblock ELS traffic */
3380 pring = lpfc_phba_elsring(phba);
3381 if (pring)
3382 pring->flag &= ~LPFC_STOP_IOCB_EVENT;
3383
3384 /* Check for error */
3385 if (mb->mbxStatus) {
3386 lpfc_printf_log(phba, KERN_INFO, LOG_LINK_EVENT,
3387 "1307 READ_LA mbox error x%x state x%x\n",
3388 mb->mbxStatus, vport->port_state);
3389 lpfc_mbx_issue_link_down(phba);
3390 phba->link_state = LPFC_HBA_ERROR;
3391 goto lpfc_mbx_cmpl_read_topology_free_mbuf;
3392 }
3393
3394 la = (struct lpfc_mbx_read_top *) &pmb->u.mb.un.varReadTop;
3395 attn_type = bf_get(lpfc_mbx_read_top_att_type, la);
3396
3397 memcpy(&phba->alpa_map[0], mp->virt, 128);
3398
3399 spin_lock_irqsave(shost->host_lock, iflags);
3400 if (bf_get(lpfc_mbx_read_top_pb, la))
3401 vport->fc_flag |= FC_BYPASSED_MODE;
3402 else
3403 vport->fc_flag &= ~FC_BYPASSED_MODE;
3404 spin_unlock_irqrestore(shost->host_lock, iflags);
3405
3406 if (phba->fc_eventTag <= la->eventTag) {
3407 phba->fc_stat.LinkMultiEvent++;
3408 if (attn_type == LPFC_ATT_LINK_UP)
3409 if (phba->fc_eventTag != 0)
3410 lpfc_linkdown(phba);
3411 }
3412
3413 phba->fc_eventTag = la->eventTag;
3414 if (phba->sli_rev < LPFC_SLI_REV4) {
3415 spin_lock_irqsave(&phba->hbalock, iflags);
3416 if (bf_get(lpfc_mbx_read_top_mm, la))
3417 phba->sli.sli_flag |= LPFC_MENLO_MAINT;
3418 else
3419 phba->sli.sli_flag &= ~LPFC_MENLO_MAINT;
3420 spin_unlock_irqrestore(&phba->hbalock, iflags);
3421 }
3422
3423 phba->link_events++;
3424 if ((attn_type == LPFC_ATT_LINK_UP) &&
3425 !(phba->sli.sli_flag & LPFC_MENLO_MAINT)) {
3426 phba->fc_stat.LinkUp++;
3427 if (phba->link_flag & LS_LOOPBACK_MODE) {
3428 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
3429 "1306 Link Up Event in loop back mode "
3430 "x%x received Data: x%x x%x x%x x%x\n",
3431 la->eventTag, phba->fc_eventTag,
3432 bf_get(lpfc_mbx_read_top_alpa_granted,
3433 la),
3434 bf_get(lpfc_mbx_read_top_link_spd, la),
3435 phba->alpa_map[0]);
3436 } else {
3437 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
3438 "1303 Link Up Event x%x received "
3439 "Data: x%x x%x x%x x%x x%x x%x %d\n",
3440 la->eventTag, phba->fc_eventTag,
3441 bf_get(lpfc_mbx_read_top_alpa_granted,
3442 la),
3443 bf_get(lpfc_mbx_read_top_link_spd, la),
3444 phba->alpa_map[0],
3445 bf_get(lpfc_mbx_read_top_mm, la),
3446 bf_get(lpfc_mbx_read_top_fa, la),
3447 phba->wait_4_mlo_maint_flg);
3448 }
3449 lpfc_mbx_process_link_up(phba, la);
3450 } else if (attn_type == LPFC_ATT_LINK_DOWN ||
3451 attn_type == LPFC_ATT_UNEXP_WWPN) {
3452 phba->fc_stat.LinkDown++;
3453 if (phba->link_flag & LS_LOOPBACK_MODE)
3454 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
3455 "1308 Link Down Event in loop back mode "
3456 "x%x received "
3457 "Data: x%x x%x x%x\n",
3458 la->eventTag, phba->fc_eventTag,
3459 phba->pport->port_state, vport->fc_flag);
3460 else if (attn_type == LPFC_ATT_UNEXP_WWPN)
3461 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
3462 "1313 Link Down UNEXP WWPN Event x%x received "
3463 "Data: x%x x%x x%x x%x x%x\n",
3464 la->eventTag, phba->fc_eventTag,
3465 phba->pport->port_state, vport->fc_flag,
3466 bf_get(lpfc_mbx_read_top_mm, la),
3467 bf_get(lpfc_mbx_read_top_fa, la));
3468 else
3469 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
3470 "1305 Link Down Event x%x received "
3471 "Data: x%x x%x x%x x%x x%x\n",
3472 la->eventTag, phba->fc_eventTag,
3473 phba->pport->port_state, vport->fc_flag,
3474 bf_get(lpfc_mbx_read_top_mm, la),
3475 bf_get(lpfc_mbx_read_top_fa, la));
3476 lpfc_mbx_issue_link_down(phba);
3477 }
3478 if (phba->sli.sli_flag & LPFC_MENLO_MAINT &&
3479 attn_type == LPFC_ATT_LINK_UP) {
3480 if (phba->link_state != LPFC_LINK_DOWN) {
3481 phba->fc_stat.LinkDown++;
3482 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
3483 "1312 Link Down Event x%x received "
3484 "Data: x%x x%x x%x\n",
3485 la->eventTag, phba->fc_eventTag,
3486 phba->pport->port_state, vport->fc_flag);
3487 lpfc_mbx_issue_link_down(phba);
3488 } else
3489 lpfc_enable_la(phba);
3490
3491 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
3492 "1310 Menlo Maint Mode Link up Event x%x rcvd "
3493 "Data: x%x x%x x%x\n",
3494 la->eventTag, phba->fc_eventTag,
3495 phba->pport->port_state, vport->fc_flag);
3496 /*
3497 * The cmnd that triggered this will be waiting for this
3498 * signal.
3499 */
3500 /* WAKEUP for MENLO_SET_MODE or MENLO_RESET command. */
3501 if (phba->wait_4_mlo_maint_flg) {
3502 phba->wait_4_mlo_maint_flg = 0;
3503 wake_up_interruptible(&phba->wait_4_mlo_m_q);
3504 }
3505 }
3506
3507 if ((phba->sli_rev < LPFC_SLI_REV4) &&
3508 bf_get(lpfc_mbx_read_top_fa, la)) {
3509 if (phba->sli.sli_flag & LPFC_MENLO_MAINT)
3510 lpfc_issue_clear_la(phba, vport);
3511 lpfc_printf_log(phba, KERN_INFO, LOG_LINK_EVENT,
3512 "1311 fa %d\n",
3513 bf_get(lpfc_mbx_read_top_fa, la));
3514 }
3515
3516 lpfc_mbx_cmpl_read_topology_free_mbuf:
3517 lpfc_mbuf_free(phba, mp->virt, mp->phys);
3518 kfree(mp);
3519 mempool_free(pmb, phba->mbox_mem_pool);
3520 return;
3521 }
3522
3523 /*
3524 * This routine handles processing a REG_LOGIN mailbox
3525 * command upon completion. It is setup in the LPFC_MBOXQ
3526 * as the completion routine when the command is
3527 * handed off to the SLI layer.
3528 */
3529 void
lpfc_mbx_cmpl_reg_login(struct lpfc_hba * phba,LPFC_MBOXQ_t * pmb)3530 lpfc_mbx_cmpl_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
3531 {
3532 struct lpfc_vport *vport = pmb->vport;
3533 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *)(pmb->ctx_buf);
3534 struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *)pmb->ctx_ndlp;
3535 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3536
3537 pmb->ctx_buf = NULL;
3538 pmb->ctx_ndlp = NULL;
3539
3540 lpfc_printf_vlog(vport, KERN_INFO, LOG_SLI,
3541 "0002 rpi:%x DID:%x flg:%x %d map:%x x%px\n",
3542 ndlp->nlp_rpi, ndlp->nlp_DID, ndlp->nlp_flag,
3543 kref_read(&ndlp->kref),
3544 ndlp->nlp_usg_map, ndlp);
3545 if (ndlp->nlp_flag & NLP_REG_LOGIN_SEND)
3546 ndlp->nlp_flag &= ~NLP_REG_LOGIN_SEND;
3547
3548 if (ndlp->nlp_flag & NLP_IGNR_REG_CMPL ||
3549 ndlp->nlp_state != NLP_STE_REG_LOGIN_ISSUE) {
3550 /* We rcvd a rscn after issuing this
3551 * mbox reg login, we may have cycled
3552 * back through the state and be
3553 * back at reg login state so this
3554 * mbox needs to be ignored becase
3555 * there is another reg login in
3556 * process.
3557 */
3558 spin_lock_irq(shost->host_lock);
3559 ndlp->nlp_flag &= ~NLP_IGNR_REG_CMPL;
3560 spin_unlock_irq(shost->host_lock);
3561
3562 /*
3563 * We cannot leave the RPI registered because
3564 * if we go thru discovery again for this ndlp
3565 * a subsequent REG_RPI will fail.
3566 */
3567 ndlp->nlp_flag |= NLP_RPI_REGISTERED;
3568 lpfc_unreg_rpi(vport, ndlp);
3569 }
3570
3571 /* Call state machine */
3572 lpfc_disc_state_machine(vport, ndlp, pmb, NLP_EVT_CMPL_REG_LOGIN);
3573
3574 lpfc_mbuf_free(phba, mp->virt, mp->phys);
3575 kfree(mp);
3576 mempool_free(pmb, phba->mbox_mem_pool);
3577 /* decrement the node reference count held for this callback
3578 * function.
3579 */
3580 lpfc_nlp_put(ndlp);
3581
3582 return;
3583 }
3584
3585 static void
lpfc_mbx_cmpl_unreg_vpi(struct lpfc_hba * phba,LPFC_MBOXQ_t * pmb)3586 lpfc_mbx_cmpl_unreg_vpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
3587 {
3588 MAILBOX_t *mb = &pmb->u.mb;
3589 struct lpfc_vport *vport = pmb->vport;
3590 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3591
3592 switch (mb->mbxStatus) {
3593 case 0x0011:
3594 case 0x0020:
3595 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
3596 "0911 cmpl_unreg_vpi, mb status = 0x%x\n",
3597 mb->mbxStatus);
3598 break;
3599 /* If VPI is busy, reset the HBA */
3600 case 0x9700:
3601 lpfc_printf_vlog(vport, KERN_ERR, LOG_NODE,
3602 "2798 Unreg_vpi failed vpi 0x%x, mb status = 0x%x\n",
3603 vport->vpi, mb->mbxStatus);
3604 if (!(phba->pport->load_flag & FC_UNLOADING))
3605 lpfc_workq_post_event(phba, NULL, NULL,
3606 LPFC_EVT_RESET_HBA);
3607 }
3608 spin_lock_irq(shost->host_lock);
3609 vport->vpi_state &= ~LPFC_VPI_REGISTERED;
3610 vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
3611 spin_unlock_irq(shost->host_lock);
3612 vport->unreg_vpi_cmpl = VPORT_OK;
3613 mempool_free(pmb, phba->mbox_mem_pool);
3614 lpfc_cleanup_vports_rrqs(vport, NULL);
3615 /*
3616 * This shost reference might have been taken at the beginning of
3617 * lpfc_vport_delete()
3618 */
3619 if ((vport->load_flag & FC_UNLOADING) && (vport != phba->pport))
3620 scsi_host_put(shost);
3621 }
3622
3623 int
lpfc_mbx_unreg_vpi(struct lpfc_vport * vport)3624 lpfc_mbx_unreg_vpi(struct lpfc_vport *vport)
3625 {
3626 struct lpfc_hba *phba = vport->phba;
3627 LPFC_MBOXQ_t *mbox;
3628 int rc;
3629
3630 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
3631 if (!mbox)
3632 return 1;
3633
3634 lpfc_unreg_vpi(phba, vport->vpi, mbox);
3635 mbox->vport = vport;
3636 mbox->mbox_cmpl = lpfc_mbx_cmpl_unreg_vpi;
3637 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
3638 if (rc == MBX_NOT_FINISHED) {
3639 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX | LOG_VPORT,
3640 "1800 Could not issue unreg_vpi\n");
3641 mempool_free(mbox, phba->mbox_mem_pool);
3642 vport->unreg_vpi_cmpl = VPORT_ERROR;
3643 return rc;
3644 }
3645 return 0;
3646 }
3647
3648 static void
lpfc_mbx_cmpl_reg_vpi(struct lpfc_hba * phba,LPFC_MBOXQ_t * pmb)3649 lpfc_mbx_cmpl_reg_vpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
3650 {
3651 struct lpfc_vport *vport = pmb->vport;
3652 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3653 MAILBOX_t *mb = &pmb->u.mb;
3654
3655 switch (mb->mbxStatus) {
3656 case 0x0011:
3657 case 0x9601:
3658 case 0x9602:
3659 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
3660 "0912 cmpl_reg_vpi, mb status = 0x%x\n",
3661 mb->mbxStatus);
3662 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
3663 spin_lock_irq(shost->host_lock);
3664 vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP);
3665 spin_unlock_irq(shost->host_lock);
3666 vport->fc_myDID = 0;
3667
3668 if ((vport->cfg_enable_fc4_type == LPFC_ENABLE_BOTH) ||
3669 (vport->cfg_enable_fc4_type == LPFC_ENABLE_NVME)) {
3670 if (phba->nvmet_support)
3671 lpfc_nvmet_update_targetport(phba);
3672 else
3673 lpfc_nvme_update_localport(vport);
3674 }
3675 goto out;
3676 }
3677
3678 spin_lock_irq(shost->host_lock);
3679 vport->vpi_state |= LPFC_VPI_REGISTERED;
3680 vport->fc_flag &= ~FC_VPORT_NEEDS_REG_VPI;
3681 spin_unlock_irq(shost->host_lock);
3682 vport->num_disc_nodes = 0;
3683 /* go thru NPR list and issue ELS PLOGIs */
3684 if (vport->fc_npr_cnt)
3685 lpfc_els_disc_plogi(vport);
3686
3687 if (!vport->num_disc_nodes) {
3688 spin_lock_irq(shost->host_lock);
3689 vport->fc_flag &= ~FC_NDISC_ACTIVE;
3690 spin_unlock_irq(shost->host_lock);
3691 lpfc_can_disctmo(vport);
3692 }
3693 vport->port_state = LPFC_VPORT_READY;
3694
3695 out:
3696 mempool_free(pmb, phba->mbox_mem_pool);
3697 return;
3698 }
3699
3700 /**
3701 * lpfc_create_static_vport - Read HBA config region to create static vports.
3702 * @phba: pointer to lpfc hba data structure.
3703 *
3704 * This routine issue a DUMP mailbox command for config region 22 to get
3705 * the list of static vports to be created. The function create vports
3706 * based on the information returned from the HBA.
3707 **/
3708 void
lpfc_create_static_vport(struct lpfc_hba * phba)3709 lpfc_create_static_vport(struct lpfc_hba *phba)
3710 {
3711 LPFC_MBOXQ_t *pmb = NULL;
3712 MAILBOX_t *mb;
3713 struct static_vport_info *vport_info;
3714 int mbx_wait_rc = 0, i;
3715 struct fc_vport_identifiers vport_id;
3716 struct fc_vport *new_fc_vport;
3717 struct Scsi_Host *shost;
3718 struct lpfc_vport *vport;
3719 uint16_t offset = 0;
3720 uint8_t *vport_buff;
3721 struct lpfc_dmabuf *mp;
3722 uint32_t byte_count = 0;
3723
3724 pmb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
3725 if (!pmb) {
3726 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
3727 "0542 lpfc_create_static_vport failed to"
3728 " allocate mailbox memory\n");
3729 return;
3730 }
3731 memset(pmb, 0, sizeof(LPFC_MBOXQ_t));
3732 mb = &pmb->u.mb;
3733
3734 vport_info = kzalloc(sizeof(struct static_vport_info), GFP_KERNEL);
3735 if (!vport_info) {
3736 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
3737 "0543 lpfc_create_static_vport failed to"
3738 " allocate vport_info\n");
3739 mempool_free(pmb, phba->mbox_mem_pool);
3740 return;
3741 }
3742
3743 vport_buff = (uint8_t *) vport_info;
3744 do {
3745 /* free dma buffer from previous round */
3746 if (pmb->ctx_buf) {
3747 mp = (struct lpfc_dmabuf *)pmb->ctx_buf;
3748 lpfc_mbuf_free(phba, mp->virt, mp->phys);
3749 kfree(mp);
3750 }
3751 if (lpfc_dump_static_vport(phba, pmb, offset))
3752 goto out;
3753
3754 pmb->vport = phba->pport;
3755 mbx_wait_rc = lpfc_sli_issue_mbox_wait(phba, pmb,
3756 LPFC_MBOX_TMO);
3757
3758 if ((mbx_wait_rc != MBX_SUCCESS) || mb->mbxStatus) {
3759 lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
3760 "0544 lpfc_create_static_vport failed to"
3761 " issue dump mailbox command ret 0x%x "
3762 "status 0x%x\n",
3763 mbx_wait_rc, mb->mbxStatus);
3764 goto out;
3765 }
3766
3767 if (phba->sli_rev == LPFC_SLI_REV4) {
3768 byte_count = pmb->u.mqe.un.mb_words[5];
3769 mp = (struct lpfc_dmabuf *)pmb->ctx_buf;
3770 if (byte_count > sizeof(struct static_vport_info) -
3771 offset)
3772 byte_count = sizeof(struct static_vport_info)
3773 - offset;
3774 memcpy(vport_buff + offset, mp->virt, byte_count);
3775 offset += byte_count;
3776 } else {
3777 if (mb->un.varDmp.word_cnt >
3778 sizeof(struct static_vport_info) - offset)
3779 mb->un.varDmp.word_cnt =
3780 sizeof(struct static_vport_info)
3781 - offset;
3782 byte_count = mb->un.varDmp.word_cnt;
3783 lpfc_sli_pcimem_bcopy(((uint8_t *)mb) + DMP_RSP_OFFSET,
3784 vport_buff + offset,
3785 byte_count);
3786
3787 offset += byte_count;
3788 }
3789
3790 } while (byte_count &&
3791 offset < sizeof(struct static_vport_info));
3792
3793
3794 if ((le32_to_cpu(vport_info->signature) != VPORT_INFO_SIG) ||
3795 ((le32_to_cpu(vport_info->rev) & VPORT_INFO_REV_MASK)
3796 != VPORT_INFO_REV)) {
3797 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
3798 "0545 lpfc_create_static_vport bad"
3799 " information header 0x%x 0x%x\n",
3800 le32_to_cpu(vport_info->signature),
3801 le32_to_cpu(vport_info->rev) & VPORT_INFO_REV_MASK);
3802
3803 goto out;
3804 }
3805
3806 shost = lpfc_shost_from_vport(phba->pport);
3807
3808 for (i = 0; i < MAX_STATIC_VPORT_COUNT; i++) {
3809 memset(&vport_id, 0, sizeof(vport_id));
3810 vport_id.port_name = wwn_to_u64(vport_info->vport_list[i].wwpn);
3811 vport_id.node_name = wwn_to_u64(vport_info->vport_list[i].wwnn);
3812 if (!vport_id.port_name || !vport_id.node_name)
3813 continue;
3814
3815 vport_id.roles = FC_PORT_ROLE_FCP_INITIATOR;
3816 vport_id.vport_type = FC_PORTTYPE_NPIV;
3817 vport_id.disable = false;
3818 new_fc_vport = fc_vport_create(shost, 0, &vport_id);
3819
3820 if (!new_fc_vport) {
3821 lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
3822 "0546 lpfc_create_static_vport failed to"
3823 " create vport\n");
3824 continue;
3825 }
3826
3827 vport = *(struct lpfc_vport **)new_fc_vport->dd_data;
3828 vport->vport_flag |= STATIC_VPORT;
3829 }
3830
3831 out:
3832 kfree(vport_info);
3833 if (mbx_wait_rc != MBX_TIMEOUT) {
3834 if (pmb->ctx_buf) {
3835 mp = (struct lpfc_dmabuf *)pmb->ctx_buf;
3836 lpfc_mbuf_free(phba, mp->virt, mp->phys);
3837 kfree(mp);
3838 }
3839 mempool_free(pmb, phba->mbox_mem_pool);
3840 }
3841
3842 return;
3843 }
3844
3845 /*
3846 * This routine handles processing a Fabric REG_LOGIN mailbox
3847 * command upon completion. It is setup in the LPFC_MBOXQ
3848 * as the completion routine when the command is
3849 * handed off to the SLI layer.
3850 */
3851 void
lpfc_mbx_cmpl_fabric_reg_login(struct lpfc_hba * phba,LPFC_MBOXQ_t * pmb)3852 lpfc_mbx_cmpl_fabric_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
3853 {
3854 struct lpfc_vport *vport = pmb->vport;
3855 MAILBOX_t *mb = &pmb->u.mb;
3856 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *)(pmb->ctx_buf);
3857 struct lpfc_nodelist *ndlp;
3858 struct Scsi_Host *shost;
3859
3860 ndlp = (struct lpfc_nodelist *)pmb->ctx_ndlp;
3861 pmb->ctx_ndlp = NULL;
3862 pmb->ctx_buf = NULL;
3863
3864 if (mb->mbxStatus) {
3865 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
3866 "0258 Register Fabric login error: 0x%x\n",
3867 mb->mbxStatus);
3868 lpfc_mbuf_free(phba, mp->virt, mp->phys);
3869 kfree(mp);
3870 mempool_free(pmb, phba->mbox_mem_pool);
3871
3872 if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
3873 /* FLOGI failed, use loop map to make discovery list */
3874 lpfc_disc_list_loopmap(vport);
3875
3876 /* Start discovery */
3877 lpfc_disc_start(vport);
3878 /* Decrement the reference count to ndlp after the
3879 * reference to the ndlp are done.
3880 */
3881 lpfc_nlp_put(ndlp);
3882 return;
3883 }
3884
3885 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
3886 /* Decrement the reference count to ndlp after the reference
3887 * to the ndlp are done.
3888 */
3889 lpfc_nlp_put(ndlp);
3890 return;
3891 }
3892
3893 if (phba->sli_rev < LPFC_SLI_REV4)
3894 ndlp->nlp_rpi = mb->un.varWords[0];
3895 ndlp->nlp_flag |= NLP_RPI_REGISTERED;
3896 ndlp->nlp_type |= NLP_FABRIC;
3897 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
3898
3899 if (vport->port_state == LPFC_FABRIC_CFG_LINK) {
3900 /* when physical port receive logo donot start
3901 * vport discovery */
3902 if (!(vport->fc_flag & FC_LOGO_RCVD_DID_CHNG))
3903 lpfc_start_fdiscs(phba);
3904 else {
3905 shost = lpfc_shost_from_vport(vport);
3906 spin_lock_irq(shost->host_lock);
3907 vport->fc_flag &= ~FC_LOGO_RCVD_DID_CHNG ;
3908 spin_unlock_irq(shost->host_lock);
3909 }
3910 lpfc_do_scr_ns_plogi(phba, vport);
3911 }
3912
3913 lpfc_mbuf_free(phba, mp->virt, mp->phys);
3914 kfree(mp);
3915 mempool_free(pmb, phba->mbox_mem_pool);
3916
3917 /* Drop the reference count from the mbox at the end after
3918 * all the current reference to the ndlp have been done.
3919 */
3920 lpfc_nlp_put(ndlp);
3921 return;
3922 }
3923
3924 /*
3925 * This routine will issue a GID_FT for each FC4 Type supported
3926 * by the driver. ALL GID_FTs must complete before discovery is started.
3927 */
3928 int
lpfc_issue_gidft(struct lpfc_vport * vport)3929 lpfc_issue_gidft(struct lpfc_vport *vport)
3930 {
3931 /* Good status, issue CT Request to NameServer */
3932 if ((vport->cfg_enable_fc4_type == LPFC_ENABLE_BOTH) ||
3933 (vport->cfg_enable_fc4_type == LPFC_ENABLE_FCP)) {
3934 if (lpfc_ns_cmd(vport, SLI_CTNS_GID_FT, 0, SLI_CTPT_FCP)) {
3935 /* Cannot issue NameServer FCP Query, so finish up
3936 * discovery
3937 */
3938 lpfc_printf_vlog(vport, KERN_ERR, LOG_SLI,
3939 "0604 %s FC TYPE %x %s\n",
3940 "Failed to issue GID_FT to ",
3941 FC_TYPE_FCP,
3942 "Finishing discovery.");
3943 return 0;
3944 }
3945 vport->gidft_inp++;
3946 }
3947
3948 if ((vport->cfg_enable_fc4_type == LPFC_ENABLE_BOTH) ||
3949 (vport->cfg_enable_fc4_type == LPFC_ENABLE_NVME)) {
3950 if (lpfc_ns_cmd(vport, SLI_CTNS_GID_FT, 0, SLI_CTPT_NVME)) {
3951 /* Cannot issue NameServer NVME Query, so finish up
3952 * discovery
3953 */
3954 lpfc_printf_vlog(vport, KERN_ERR, LOG_SLI,
3955 "0605 %s FC_TYPE %x %s %d\n",
3956 "Failed to issue GID_FT to ",
3957 FC_TYPE_NVME,
3958 "Finishing discovery: gidftinp ",
3959 vport->gidft_inp);
3960 if (vport->gidft_inp == 0)
3961 return 0;
3962 } else
3963 vport->gidft_inp++;
3964 }
3965 return vport->gidft_inp;
3966 }
3967
3968 /**
3969 * lpfc_issue_gidpt - issue a GID_PT for all N_Ports
3970 * @vport: The virtual port for which this call is being executed.
3971 *
3972 * This routine will issue a GID_PT to get a list of all N_Ports
3973 *
3974 * Return value :
3975 * 0 - Failure to issue a GID_PT
3976 * 1 - GID_PT issued
3977 **/
3978 int
lpfc_issue_gidpt(struct lpfc_vport * vport)3979 lpfc_issue_gidpt(struct lpfc_vport *vport)
3980 {
3981 /* Good status, issue CT Request to NameServer */
3982 if (lpfc_ns_cmd(vport, SLI_CTNS_GID_PT, 0, GID_PT_N_PORT)) {
3983 /* Cannot issue NameServer FCP Query, so finish up
3984 * discovery
3985 */
3986 lpfc_printf_vlog(vport, KERN_ERR, LOG_SLI,
3987 "0606 %s Port TYPE %x %s\n",
3988 "Failed to issue GID_PT to ",
3989 GID_PT_N_PORT,
3990 "Finishing discovery.");
3991 return 0;
3992 }
3993 vport->gidft_inp++;
3994 return 1;
3995 }
3996
3997 /*
3998 * This routine handles processing a NameServer REG_LOGIN mailbox
3999 * command upon completion. It is setup in the LPFC_MBOXQ
4000 * as the completion routine when the command is
4001 * handed off to the SLI layer.
4002 */
4003 void
lpfc_mbx_cmpl_ns_reg_login(struct lpfc_hba * phba,LPFC_MBOXQ_t * pmb)4004 lpfc_mbx_cmpl_ns_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
4005 {
4006 MAILBOX_t *mb = &pmb->u.mb;
4007 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *)(pmb->ctx_buf);
4008 struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *)pmb->ctx_ndlp;
4009 struct lpfc_vport *vport = pmb->vport;
4010
4011 pmb->ctx_buf = NULL;
4012 pmb->ctx_ndlp = NULL;
4013 vport->gidft_inp = 0;
4014
4015 if (mb->mbxStatus) {
4016 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
4017 "0260 Register NameServer error: 0x%x\n",
4018 mb->mbxStatus);
4019
4020 out:
4021 /* decrement the node reference count held for this
4022 * callback function.
4023 */
4024 lpfc_nlp_put(ndlp);
4025 lpfc_mbuf_free(phba, mp->virt, mp->phys);
4026 kfree(mp);
4027 mempool_free(pmb, phba->mbox_mem_pool);
4028
4029 /* If no other thread is using the ndlp, free it */
4030 lpfc_nlp_not_used(ndlp);
4031
4032 if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
4033 /*
4034 * RegLogin failed, use loop map to make discovery
4035 * list
4036 */
4037 lpfc_disc_list_loopmap(vport);
4038
4039 /* Start discovery */
4040 lpfc_disc_start(vport);
4041 return;
4042 }
4043 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
4044 return;
4045 }
4046
4047 if (phba->sli_rev < LPFC_SLI_REV4)
4048 ndlp->nlp_rpi = mb->un.varWords[0];
4049 ndlp->nlp_flag |= NLP_RPI_REGISTERED;
4050 ndlp->nlp_type |= NLP_FABRIC;
4051 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
4052 lpfc_printf_vlog(vport, KERN_INFO, LOG_SLI,
4053 "0003 rpi:%x DID:%x flg:%x %d map%x x%px\n",
4054 ndlp->nlp_rpi, ndlp->nlp_DID, ndlp->nlp_flag,
4055 kref_read(&ndlp->kref),
4056 ndlp->nlp_usg_map, ndlp);
4057
4058 if (vport->port_state < LPFC_VPORT_READY) {
4059 /* Link up discovery requires Fabric registration. */
4060 lpfc_ns_cmd(vport, SLI_CTNS_RNN_ID, 0, 0);
4061 lpfc_ns_cmd(vport, SLI_CTNS_RSNN_NN, 0, 0);
4062 lpfc_ns_cmd(vport, SLI_CTNS_RSPN_ID, 0, 0);
4063 lpfc_ns_cmd(vport, SLI_CTNS_RFT_ID, 0, 0);
4064
4065 if ((vport->cfg_enable_fc4_type == LPFC_ENABLE_BOTH) ||
4066 (vport->cfg_enable_fc4_type == LPFC_ENABLE_FCP))
4067 lpfc_ns_cmd(vport, SLI_CTNS_RFF_ID, 0, FC_TYPE_FCP);
4068
4069 if ((vport->cfg_enable_fc4_type == LPFC_ENABLE_BOTH) ||
4070 (vport->cfg_enable_fc4_type == LPFC_ENABLE_NVME))
4071 lpfc_ns_cmd(vport, SLI_CTNS_RFF_ID, 0,
4072 FC_TYPE_NVME);
4073
4074 /* Issue SCR just before NameServer GID_FT Query */
4075 lpfc_issue_els_scr(vport, SCR_DID, 0);
4076 }
4077
4078 vport->fc_ns_retry = 0;
4079 if (lpfc_issue_gidft(vport) == 0)
4080 goto out;
4081
4082 /*
4083 * At this point in time we may need to wait for multiple
4084 * SLI_CTNS_GID_FT CT commands to complete before we start discovery.
4085 *
4086 * decrement the node reference count held for this
4087 * callback function.
4088 */
4089 lpfc_nlp_put(ndlp);
4090 lpfc_mbuf_free(phba, mp->virt, mp->phys);
4091 kfree(mp);
4092 mempool_free(pmb, phba->mbox_mem_pool);
4093
4094 return;
4095 }
4096
4097 static void
lpfc_register_remote_port(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp)4098 lpfc_register_remote_port(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
4099 {
4100 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4101 struct fc_rport *rport;
4102 struct lpfc_rport_data *rdata;
4103 struct fc_rport_identifiers rport_ids;
4104 struct lpfc_hba *phba = vport->phba;
4105
4106 if (vport->cfg_enable_fc4_type == LPFC_ENABLE_NVME)
4107 return;
4108
4109 /* Remote port has reappeared. Re-register w/ FC transport */
4110 rport_ids.node_name = wwn_to_u64(ndlp->nlp_nodename.u.wwn);
4111 rport_ids.port_name = wwn_to_u64(ndlp->nlp_portname.u.wwn);
4112 rport_ids.port_id = ndlp->nlp_DID;
4113 rport_ids.roles = FC_RPORT_ROLE_UNKNOWN;
4114
4115 /*
4116 * We leave our node pointer in rport->dd_data when we unregister a
4117 * FCP target port. But fc_remote_port_add zeros the space to which
4118 * rport->dd_data points. So, if we're reusing a previously
4119 * registered port, drop the reference that we took the last time we
4120 * registered the port.
4121 */
4122 rport = ndlp->rport;
4123 if (rport) {
4124 rdata = rport->dd_data;
4125 /* break the link before dropping the ref */
4126 ndlp->rport = NULL;
4127 if (rdata) {
4128 if (rdata->pnode == ndlp)
4129 lpfc_nlp_put(ndlp);
4130 rdata->pnode = NULL;
4131 }
4132 /* drop reference for earlier registeration */
4133 put_device(&rport->dev);
4134 }
4135
4136 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
4137 "rport add: did:x%x flg:x%x type x%x",
4138 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type);
4139
4140 /* Don't add the remote port if unloading. */
4141 if (vport->load_flag & FC_UNLOADING)
4142 return;
4143
4144 ndlp->rport = rport = fc_remote_port_add(shost, 0, &rport_ids);
4145 if (!rport || !get_device(&rport->dev)) {
4146 dev_printk(KERN_WARNING, &phba->pcidev->dev,
4147 "Warning: fc_remote_port_add failed\n");
4148 return;
4149 }
4150
4151 /* initialize static port data */
4152 rport->maxframe_size = ndlp->nlp_maxframe;
4153 rport->supported_classes = ndlp->nlp_class_sup;
4154 rdata = rport->dd_data;
4155 rdata->pnode = lpfc_nlp_get(ndlp);
4156
4157 if (ndlp->nlp_type & NLP_FCP_TARGET)
4158 rport_ids.roles |= FC_PORT_ROLE_FCP_TARGET;
4159 if (ndlp->nlp_type & NLP_FCP_INITIATOR)
4160 rport_ids.roles |= FC_PORT_ROLE_FCP_INITIATOR;
4161 if (ndlp->nlp_type & NLP_NVME_INITIATOR)
4162 rport_ids.roles |= FC_PORT_ROLE_NVME_INITIATOR;
4163 if (ndlp->nlp_type & NLP_NVME_TARGET)
4164 rport_ids.roles |= FC_PORT_ROLE_NVME_TARGET;
4165 if (ndlp->nlp_type & NLP_NVME_DISCOVERY)
4166 rport_ids.roles |= FC_PORT_ROLE_NVME_DISCOVERY;
4167
4168 if (rport_ids.roles != FC_RPORT_ROLE_UNKNOWN)
4169 fc_remote_port_rolechg(rport, rport_ids.roles);
4170
4171 lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_NODE,
4172 "3183 rport register x%06x, rport x%px role x%x\n",
4173 ndlp->nlp_DID, rport, rport_ids.roles);
4174
4175 if ((rport->scsi_target_id != -1) &&
4176 (rport->scsi_target_id < LPFC_MAX_TARGET)) {
4177 ndlp->nlp_sid = rport->scsi_target_id;
4178 }
4179 return;
4180 }
4181
4182 static void
lpfc_unregister_remote_port(struct lpfc_nodelist * ndlp)4183 lpfc_unregister_remote_port(struct lpfc_nodelist *ndlp)
4184 {
4185 struct fc_rport *rport = ndlp->rport;
4186 struct lpfc_vport *vport = ndlp->vport;
4187
4188 if (vport->cfg_enable_fc4_type == LPFC_ENABLE_NVME)
4189 return;
4190
4191 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
4192 "rport delete: did:x%x flg:x%x type x%x",
4193 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type);
4194
4195 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
4196 "3184 rport unregister x%06x, rport x%px\n",
4197 ndlp->nlp_DID, rport);
4198
4199 fc_remote_port_delete(rport);
4200
4201 return;
4202 }
4203
4204 static void
lpfc_nlp_counters(struct lpfc_vport * vport,int state,int count)4205 lpfc_nlp_counters(struct lpfc_vport *vport, int state, int count)
4206 {
4207 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4208 unsigned long iflags;
4209
4210 spin_lock_irqsave(shost->host_lock, iflags);
4211 switch (state) {
4212 case NLP_STE_UNUSED_NODE:
4213 vport->fc_unused_cnt += count;
4214 break;
4215 case NLP_STE_PLOGI_ISSUE:
4216 vport->fc_plogi_cnt += count;
4217 break;
4218 case NLP_STE_ADISC_ISSUE:
4219 vport->fc_adisc_cnt += count;
4220 break;
4221 case NLP_STE_REG_LOGIN_ISSUE:
4222 vport->fc_reglogin_cnt += count;
4223 break;
4224 case NLP_STE_PRLI_ISSUE:
4225 vport->fc_prli_cnt += count;
4226 break;
4227 case NLP_STE_UNMAPPED_NODE:
4228 vport->fc_unmap_cnt += count;
4229 break;
4230 case NLP_STE_MAPPED_NODE:
4231 vport->fc_map_cnt += count;
4232 break;
4233 case NLP_STE_NPR_NODE:
4234 if (vport->fc_npr_cnt == 0 && count == -1)
4235 vport->fc_npr_cnt = 0;
4236 else
4237 vport->fc_npr_cnt += count;
4238 break;
4239 }
4240 spin_unlock_irqrestore(shost->host_lock, iflags);
4241 }
4242
4243 static void
lpfc_nlp_state_cleanup(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,int old_state,int new_state)4244 lpfc_nlp_state_cleanup(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
4245 int old_state, int new_state)
4246 {
4247 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4248
4249 if (new_state == NLP_STE_UNMAPPED_NODE) {
4250 ndlp->nlp_flag &= ~NLP_NODEV_REMOVE;
4251 ndlp->nlp_type |= NLP_FC_NODE;
4252 }
4253 if (new_state == NLP_STE_MAPPED_NODE)
4254 ndlp->nlp_flag &= ~NLP_NODEV_REMOVE;
4255 if (new_state == NLP_STE_NPR_NODE)
4256 ndlp->nlp_flag &= ~NLP_RCV_PLOGI;
4257
4258 /* FCP and NVME Transport interface */
4259 if ((old_state == NLP_STE_MAPPED_NODE ||
4260 old_state == NLP_STE_UNMAPPED_NODE)) {
4261 if (ndlp->rport) {
4262 vport->phba->nport_event_cnt++;
4263 lpfc_unregister_remote_port(ndlp);
4264 }
4265
4266 if (ndlp->nlp_fc4_type & NLP_FC4_NVME) {
4267 vport->phba->nport_event_cnt++;
4268 if (vport->phba->nvmet_support == 0) {
4269 /* Start devloss if target. */
4270 if (ndlp->nlp_type & NLP_NVME_TARGET)
4271 lpfc_nvme_unregister_port(vport, ndlp);
4272 } else {
4273 /* NVMET has no upcall. */
4274 lpfc_nlp_put(ndlp);
4275 }
4276 }
4277 }
4278
4279 /* FCP and NVME Transport interfaces */
4280
4281 if (new_state == NLP_STE_MAPPED_NODE ||
4282 new_state == NLP_STE_UNMAPPED_NODE) {
4283 if (ndlp->nlp_fc4_type ||
4284 ndlp->nlp_DID == Fabric_DID ||
4285 ndlp->nlp_DID == NameServer_DID ||
4286 ndlp->nlp_DID == FDMI_DID) {
4287 vport->phba->nport_event_cnt++;
4288 /*
4289 * Tell the fc transport about the port, if we haven't
4290 * already. If we have, and it's a scsi entity, be
4291 */
4292 lpfc_register_remote_port(vport, ndlp);
4293 }
4294 /* Notify the NVME transport of this new rport. */
4295 if (vport->phba->sli_rev >= LPFC_SLI_REV4 &&
4296 ndlp->nlp_fc4_type & NLP_FC4_NVME) {
4297 if (vport->phba->nvmet_support == 0) {
4298 /* Register this rport with the transport.
4299 * Only NVME Target Rports are registered with
4300 * the transport.
4301 */
4302 if (ndlp->nlp_type & NLP_NVME_TARGET) {
4303 vport->phba->nport_event_cnt++;
4304 lpfc_nvme_register_port(vport, ndlp);
4305 }
4306 } else {
4307 /* Just take an NDLP ref count since the
4308 * target does not register rports.
4309 */
4310 lpfc_nlp_get(ndlp);
4311 }
4312 }
4313 }
4314
4315 if ((new_state == NLP_STE_MAPPED_NODE) &&
4316 (vport->stat_data_enabled)) {
4317 /*
4318 * A new target is discovered, if there is no buffer for
4319 * statistical data collection allocate buffer.
4320 */
4321 ndlp->lat_data = kcalloc(LPFC_MAX_BUCKET_COUNT,
4322 sizeof(struct lpfc_scsicmd_bkt),
4323 GFP_KERNEL);
4324
4325 if (!ndlp->lat_data)
4326 lpfc_printf_vlog(vport, KERN_ERR, LOG_NODE,
4327 "0286 lpfc_nlp_state_cleanup failed to "
4328 "allocate statistical data buffer DID "
4329 "0x%x\n", ndlp->nlp_DID);
4330 }
4331 /*
4332 * If the node just added to Mapped list was an FCP target,
4333 * but the remote port registration failed or assigned a target
4334 * id outside the presentable range - move the node to the
4335 * Unmapped List.
4336 */
4337 if ((new_state == NLP_STE_MAPPED_NODE) &&
4338 (ndlp->nlp_type & NLP_FCP_TARGET) &&
4339 (!ndlp->rport ||
4340 ndlp->rport->scsi_target_id == -1 ||
4341 ndlp->rport->scsi_target_id >= LPFC_MAX_TARGET)) {
4342 spin_lock_irq(shost->host_lock);
4343 ndlp->nlp_flag |= NLP_TGT_NO_SCSIID;
4344 spin_unlock_irq(shost->host_lock);
4345 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
4346 }
4347 }
4348
4349 static char *
lpfc_nlp_state_name(char * buffer,size_t size,int state)4350 lpfc_nlp_state_name(char *buffer, size_t size, int state)
4351 {
4352 static char *states[] = {
4353 [NLP_STE_UNUSED_NODE] = "UNUSED",
4354 [NLP_STE_PLOGI_ISSUE] = "PLOGI",
4355 [NLP_STE_ADISC_ISSUE] = "ADISC",
4356 [NLP_STE_REG_LOGIN_ISSUE] = "REGLOGIN",
4357 [NLP_STE_PRLI_ISSUE] = "PRLI",
4358 [NLP_STE_LOGO_ISSUE] = "LOGO",
4359 [NLP_STE_UNMAPPED_NODE] = "UNMAPPED",
4360 [NLP_STE_MAPPED_NODE] = "MAPPED",
4361 [NLP_STE_NPR_NODE] = "NPR",
4362 };
4363
4364 if (state < NLP_STE_MAX_STATE && states[state])
4365 strlcpy(buffer, states[state], size);
4366 else
4367 snprintf(buffer, size, "unknown (%d)", state);
4368 return buffer;
4369 }
4370
4371 void
lpfc_nlp_set_state(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,int state)4372 lpfc_nlp_set_state(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
4373 int state)
4374 {
4375 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4376 int old_state = ndlp->nlp_state;
4377 char name1[16], name2[16];
4378
4379 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
4380 "0904 NPort state transition x%06x, %s -> %s\n",
4381 ndlp->nlp_DID,
4382 lpfc_nlp_state_name(name1, sizeof(name1), old_state),
4383 lpfc_nlp_state_name(name2, sizeof(name2), state));
4384
4385 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE,
4386 "node statechg did:x%x old:%d ste:%d",
4387 ndlp->nlp_DID, old_state, state);
4388
4389 if (old_state == NLP_STE_NPR_NODE &&
4390 state != NLP_STE_NPR_NODE)
4391 lpfc_cancel_retry_delay_tmo(vport, ndlp);
4392 if (old_state == NLP_STE_UNMAPPED_NODE) {
4393 ndlp->nlp_flag &= ~NLP_TGT_NO_SCSIID;
4394 ndlp->nlp_type &= ~NLP_FC_NODE;
4395 }
4396
4397 if (list_empty(&ndlp->nlp_listp)) {
4398 spin_lock_irq(shost->host_lock);
4399 list_add_tail(&ndlp->nlp_listp, &vport->fc_nodes);
4400 spin_unlock_irq(shost->host_lock);
4401 } else if (old_state)
4402 lpfc_nlp_counters(vport, old_state, -1);
4403
4404 ndlp->nlp_state = state;
4405 lpfc_nlp_counters(vport, state, 1);
4406 lpfc_nlp_state_cleanup(vport, ndlp, old_state, state);
4407 }
4408
4409 void
lpfc_enqueue_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp)4410 lpfc_enqueue_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
4411 {
4412 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4413
4414 if (list_empty(&ndlp->nlp_listp)) {
4415 spin_lock_irq(shost->host_lock);
4416 list_add_tail(&ndlp->nlp_listp, &vport->fc_nodes);
4417 spin_unlock_irq(shost->host_lock);
4418 }
4419 }
4420
4421 void
lpfc_dequeue_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp)4422 lpfc_dequeue_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
4423 {
4424 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4425
4426 lpfc_cancel_retry_delay_tmo(vport, ndlp);
4427 if (ndlp->nlp_state && !list_empty(&ndlp->nlp_listp))
4428 lpfc_nlp_counters(vport, ndlp->nlp_state, -1);
4429 spin_lock_irq(shost->host_lock);
4430 list_del_init(&ndlp->nlp_listp);
4431 spin_unlock_irq(shost->host_lock);
4432 lpfc_nlp_state_cleanup(vport, ndlp, ndlp->nlp_state,
4433 NLP_STE_UNUSED_NODE);
4434 }
4435
4436 static void
lpfc_disable_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp)4437 lpfc_disable_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
4438 {
4439 lpfc_cancel_retry_delay_tmo(vport, ndlp);
4440 if (ndlp->nlp_state && !list_empty(&ndlp->nlp_listp))
4441 lpfc_nlp_counters(vport, ndlp->nlp_state, -1);
4442 lpfc_nlp_state_cleanup(vport, ndlp, ndlp->nlp_state,
4443 NLP_STE_UNUSED_NODE);
4444 }
4445 /**
4446 * lpfc_initialize_node - Initialize all fields of node object
4447 * @vport: Pointer to Virtual Port object.
4448 * @ndlp: Pointer to FC node object.
4449 * @did: FC_ID of the node.
4450 *
4451 * This function is always called when node object need to be initialized.
4452 * It initializes all the fields of the node object. Although the reference
4453 * to phba from @ndlp can be obtained indirectly through it's reference to
4454 * @vport, a direct reference to phba is taken here by @ndlp. This is due
4455 * to the life-span of the @ndlp might go beyond the existence of @vport as
4456 * the final release of ndlp is determined by its reference count. And, the
4457 * operation on @ndlp needs the reference to phba.
4458 **/
4459 static inline void
lpfc_initialize_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,uint32_t did)4460 lpfc_initialize_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
4461 uint32_t did)
4462 {
4463 INIT_LIST_HEAD(&ndlp->els_retry_evt.evt_listp);
4464 INIT_LIST_HEAD(&ndlp->dev_loss_evt.evt_listp);
4465 timer_setup(&ndlp->nlp_delayfunc, lpfc_els_retry_delay, 0);
4466 ndlp->nlp_DID = did;
4467 ndlp->vport = vport;
4468 ndlp->phba = vport->phba;
4469 ndlp->nlp_sid = NLP_NO_SID;
4470 ndlp->nlp_fc4_type = NLP_FC4_NONE;
4471 kref_init(&ndlp->kref);
4472 NLP_INT_NODE_ACT(ndlp);
4473 atomic_set(&ndlp->cmd_pending, 0);
4474 ndlp->cmd_qdepth = vport->cfg_tgt_queue_depth;
4475 ndlp->nlp_defer_did = NLP_EVT_NOTHING_PENDING;
4476 }
4477
4478 struct lpfc_nodelist *
lpfc_enable_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,int state)4479 lpfc_enable_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
4480 int state)
4481 {
4482 struct lpfc_hba *phba = vport->phba;
4483 uint32_t did, flag;
4484 unsigned long flags;
4485 unsigned long *active_rrqs_xri_bitmap = NULL;
4486 int rpi = LPFC_RPI_ALLOC_ERROR;
4487 uint32_t defer_did = 0;
4488
4489 if (!ndlp)
4490 return NULL;
4491
4492 if (phba->sli_rev == LPFC_SLI_REV4) {
4493 if (ndlp->nlp_rpi == LPFC_RPI_ALLOC_ERROR)
4494 rpi = lpfc_sli4_alloc_rpi(vport->phba);
4495 else
4496 rpi = ndlp->nlp_rpi;
4497
4498 if (rpi == LPFC_RPI_ALLOC_ERROR) {
4499 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NODE,
4500 "0359 %s: ndlp:x%px "
4501 "usgmap:x%x refcnt:%d FAILED RPI "
4502 " ALLOC\n",
4503 __func__,
4504 (void *)ndlp, ndlp->nlp_usg_map,
4505 kref_read(&ndlp->kref));
4506 return NULL;
4507 }
4508 }
4509
4510 spin_lock_irqsave(&phba->ndlp_lock, flags);
4511 /* The ndlp should not be in memory free mode */
4512 if (NLP_CHK_FREE_REQ(ndlp)) {
4513 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
4514 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NODE,
4515 "0277 %s: ndlp:x%px "
4516 "usgmap:x%x refcnt:%d\n",
4517 __func__, (void *)ndlp, ndlp->nlp_usg_map,
4518 kref_read(&ndlp->kref));
4519 goto free_rpi;
4520 }
4521 /* The ndlp should not already be in active mode */
4522 if (NLP_CHK_NODE_ACT(ndlp)) {
4523 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
4524 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NODE,
4525 "0278 %s: ndlp:x%px "
4526 "usgmap:x%x refcnt:%d\n",
4527 __func__, (void *)ndlp, ndlp->nlp_usg_map,
4528 kref_read(&ndlp->kref));
4529 goto free_rpi;
4530 }
4531
4532 /* First preserve the orginal DID, xri_bitmap and some flags */
4533 did = ndlp->nlp_DID;
4534 flag = (ndlp->nlp_flag & NLP_UNREG_INP);
4535 if (flag & NLP_UNREG_INP)
4536 defer_did = ndlp->nlp_defer_did;
4537 if (phba->sli_rev == LPFC_SLI_REV4)
4538 active_rrqs_xri_bitmap = ndlp->active_rrqs_xri_bitmap;
4539
4540 /* Zero ndlp except of ndlp linked list pointer */
4541 memset((((char *)ndlp) + sizeof (struct list_head)), 0,
4542 sizeof (struct lpfc_nodelist) - sizeof (struct list_head));
4543
4544 /* Next reinitialize and restore saved objects */
4545 lpfc_initialize_node(vport, ndlp, did);
4546 ndlp->nlp_flag |= flag;
4547 if (flag & NLP_UNREG_INP)
4548 ndlp->nlp_defer_did = defer_did;
4549 if (phba->sli_rev == LPFC_SLI_REV4)
4550 ndlp->active_rrqs_xri_bitmap = active_rrqs_xri_bitmap;
4551
4552 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
4553 if (vport->phba->sli_rev == LPFC_SLI_REV4) {
4554 ndlp->nlp_rpi = rpi;
4555 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
4556 "0008 rpi:%x DID:%x flg:%x refcnt:%d "
4557 "map:%x x%px\n", ndlp->nlp_rpi, ndlp->nlp_DID,
4558 ndlp->nlp_flag,
4559 kref_read(&ndlp->kref),
4560 ndlp->nlp_usg_map, ndlp);
4561 }
4562
4563
4564 if (state != NLP_STE_UNUSED_NODE)
4565 lpfc_nlp_set_state(vport, ndlp, state);
4566 else
4567 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
4568 "0013 rpi:%x DID:%x flg:%x refcnt:%d "
4569 "map:%x x%px STATE=UNUSED\n",
4570 ndlp->nlp_rpi, ndlp->nlp_DID,
4571 ndlp->nlp_flag,
4572 kref_read(&ndlp->kref),
4573 ndlp->nlp_usg_map, ndlp);
4574
4575 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE,
4576 "node enable: did:x%x",
4577 ndlp->nlp_DID, 0, 0);
4578 return ndlp;
4579
4580 free_rpi:
4581 if (phba->sli_rev == LPFC_SLI_REV4)
4582 lpfc_sli4_free_rpi(vport->phba, rpi);
4583 return NULL;
4584 }
4585
4586 void
lpfc_drop_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp)4587 lpfc_drop_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
4588 {
4589 /*
4590 * Use of lpfc_drop_node and UNUSED list: lpfc_drop_node should
4591 * be used if we wish to issue the "last" lpfc_nlp_put() to remove
4592 * the ndlp from the vport. The ndlp marked as UNUSED on the list
4593 * until ALL other outstanding threads have completed. We check
4594 * that the ndlp not already in the UNUSED state before we proceed.
4595 */
4596 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
4597 return;
4598 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNUSED_NODE);
4599 if (vport->phba->sli_rev == LPFC_SLI_REV4) {
4600 lpfc_cleanup_vports_rrqs(vport, ndlp);
4601 lpfc_unreg_rpi(vport, ndlp);
4602 }
4603
4604 lpfc_nlp_put(ndlp);
4605 return;
4606 }
4607
4608 /*
4609 * Start / ReStart rescue timer for Discovery / RSCN handling
4610 */
4611 void
lpfc_set_disctmo(struct lpfc_vport * vport)4612 lpfc_set_disctmo(struct lpfc_vport *vport)
4613 {
4614 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4615 struct lpfc_hba *phba = vport->phba;
4616 uint32_t tmo;
4617
4618 if (vport->port_state == LPFC_LOCAL_CFG_LINK) {
4619 /* For FAN, timeout should be greater than edtov */
4620 tmo = (((phba->fc_edtov + 999) / 1000) + 1);
4621 } else {
4622 /* Normal discovery timeout should be > than ELS/CT timeout
4623 * FC spec states we need 3 * ratov for CT requests
4624 */
4625 tmo = ((phba->fc_ratov * 3) + 3);
4626 }
4627
4628
4629 if (!timer_pending(&vport->fc_disctmo)) {
4630 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
4631 "set disc timer: tmo:x%x state:x%x flg:x%x",
4632 tmo, vport->port_state, vport->fc_flag);
4633 }
4634
4635 mod_timer(&vport->fc_disctmo, jiffies + msecs_to_jiffies(1000 * tmo));
4636 spin_lock_irq(shost->host_lock);
4637 vport->fc_flag |= FC_DISC_TMO;
4638 spin_unlock_irq(shost->host_lock);
4639
4640 /* Start Discovery Timer state <hba_state> */
4641 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
4642 "0247 Start Discovery Timer state x%x "
4643 "Data: x%x x%lx x%x x%x\n",
4644 vport->port_state, tmo,
4645 (unsigned long)&vport->fc_disctmo, vport->fc_plogi_cnt,
4646 vport->fc_adisc_cnt);
4647
4648 return;
4649 }
4650
4651 /*
4652 * Cancel rescue timer for Discovery / RSCN handling
4653 */
4654 int
lpfc_can_disctmo(struct lpfc_vport * vport)4655 lpfc_can_disctmo(struct lpfc_vport *vport)
4656 {
4657 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4658 unsigned long iflags;
4659
4660 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
4661 "can disc timer: state:x%x rtry:x%x flg:x%x",
4662 vport->port_state, vport->fc_ns_retry, vport->fc_flag);
4663
4664 /* Turn off discovery timer if its running */
4665 if (vport->fc_flag & FC_DISC_TMO) {
4666 spin_lock_irqsave(shost->host_lock, iflags);
4667 vport->fc_flag &= ~FC_DISC_TMO;
4668 spin_unlock_irqrestore(shost->host_lock, iflags);
4669 del_timer_sync(&vport->fc_disctmo);
4670 spin_lock_irqsave(&vport->work_port_lock, iflags);
4671 vport->work_port_events &= ~WORKER_DISC_TMO;
4672 spin_unlock_irqrestore(&vport->work_port_lock, iflags);
4673 }
4674
4675 /* Cancel Discovery Timer state <hba_state> */
4676 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
4677 "0248 Cancel Discovery Timer state x%x "
4678 "Data: x%x x%x x%x\n",
4679 vport->port_state, vport->fc_flag,
4680 vport->fc_plogi_cnt, vport->fc_adisc_cnt);
4681 return 0;
4682 }
4683
4684 /*
4685 * Check specified ring for outstanding IOCB on the SLI queue
4686 * Return true if iocb matches the specified nport
4687 */
4688 int
lpfc_check_sli_ndlp(struct lpfc_hba * phba,struct lpfc_sli_ring * pring,struct lpfc_iocbq * iocb,struct lpfc_nodelist * ndlp)4689 lpfc_check_sli_ndlp(struct lpfc_hba *phba,
4690 struct lpfc_sli_ring *pring,
4691 struct lpfc_iocbq *iocb,
4692 struct lpfc_nodelist *ndlp)
4693 {
4694 IOCB_t *icmd = &iocb->iocb;
4695 struct lpfc_vport *vport = ndlp->vport;
4696
4697 if (iocb->vport != vport)
4698 return 0;
4699
4700 if (pring->ringno == LPFC_ELS_RING) {
4701 switch (icmd->ulpCommand) {
4702 case CMD_GEN_REQUEST64_CR:
4703 if (iocb->context_un.ndlp == ndlp)
4704 return 1;
4705 /* fall through */
4706 case CMD_ELS_REQUEST64_CR:
4707 if (icmd->un.elsreq64.remoteID == ndlp->nlp_DID)
4708 return 1;
4709 /* fall through */
4710 case CMD_XMIT_ELS_RSP64_CX:
4711 if (iocb->context1 == (uint8_t *) ndlp)
4712 return 1;
4713 /* fall through */
4714 }
4715 } else if (pring->ringno == LPFC_FCP_RING) {
4716 /* Skip match check if waiting to relogin to FCP target */
4717 if ((ndlp->nlp_type & NLP_FCP_TARGET) &&
4718 (ndlp->nlp_flag & NLP_DELAY_TMO)) {
4719 return 0;
4720 }
4721 if (icmd->ulpContext == (volatile ushort)ndlp->nlp_rpi) {
4722 return 1;
4723 }
4724 }
4725 return 0;
4726 }
4727
4728 static void
__lpfc_dequeue_nport_iocbs(struct lpfc_hba * phba,struct lpfc_nodelist * ndlp,struct lpfc_sli_ring * pring,struct list_head * dequeue_list)4729 __lpfc_dequeue_nport_iocbs(struct lpfc_hba *phba,
4730 struct lpfc_nodelist *ndlp, struct lpfc_sli_ring *pring,
4731 struct list_head *dequeue_list)
4732 {
4733 struct lpfc_iocbq *iocb, *next_iocb;
4734
4735 list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) {
4736 /* Check to see if iocb matches the nport */
4737 if (lpfc_check_sli_ndlp(phba, pring, iocb, ndlp))
4738 /* match, dequeue */
4739 list_move_tail(&iocb->list, dequeue_list);
4740 }
4741 }
4742
4743 static void
lpfc_sli3_dequeue_nport_iocbs(struct lpfc_hba * phba,struct lpfc_nodelist * ndlp,struct list_head * dequeue_list)4744 lpfc_sli3_dequeue_nport_iocbs(struct lpfc_hba *phba,
4745 struct lpfc_nodelist *ndlp, struct list_head *dequeue_list)
4746 {
4747 struct lpfc_sli *psli = &phba->sli;
4748 uint32_t i;
4749
4750 spin_lock_irq(&phba->hbalock);
4751 for (i = 0; i < psli->num_rings; i++)
4752 __lpfc_dequeue_nport_iocbs(phba, ndlp, &psli->sli3_ring[i],
4753 dequeue_list);
4754 spin_unlock_irq(&phba->hbalock);
4755 }
4756
4757 static void
lpfc_sli4_dequeue_nport_iocbs(struct lpfc_hba * phba,struct lpfc_nodelist * ndlp,struct list_head * dequeue_list)4758 lpfc_sli4_dequeue_nport_iocbs(struct lpfc_hba *phba,
4759 struct lpfc_nodelist *ndlp, struct list_head *dequeue_list)
4760 {
4761 struct lpfc_sli_ring *pring;
4762 struct lpfc_queue *qp = NULL;
4763
4764 spin_lock_irq(&phba->hbalock);
4765 list_for_each_entry(qp, &phba->sli4_hba.lpfc_wq_list, wq_list) {
4766 pring = qp->pring;
4767 if (!pring)
4768 continue;
4769 spin_lock(&pring->ring_lock);
4770 __lpfc_dequeue_nport_iocbs(phba, ndlp, pring, dequeue_list);
4771 spin_unlock(&pring->ring_lock);
4772 }
4773 spin_unlock_irq(&phba->hbalock);
4774 }
4775
4776 /*
4777 * Free resources / clean up outstanding I/Os
4778 * associated with nlp_rpi in the LPFC_NODELIST entry.
4779 */
4780 static int
lpfc_no_rpi(struct lpfc_hba * phba,struct lpfc_nodelist * ndlp)4781 lpfc_no_rpi(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
4782 {
4783 LIST_HEAD(completions);
4784
4785 lpfc_fabric_abort_nport(ndlp);
4786
4787 /*
4788 * Everything that matches on txcmplq will be returned
4789 * by firmware with a no rpi error.
4790 */
4791 if (ndlp->nlp_flag & NLP_RPI_REGISTERED) {
4792 if (phba->sli_rev != LPFC_SLI_REV4)
4793 lpfc_sli3_dequeue_nport_iocbs(phba, ndlp, &completions);
4794 else
4795 lpfc_sli4_dequeue_nport_iocbs(phba, ndlp, &completions);
4796 }
4797
4798 /* Cancel all the IOCBs from the completions list */
4799 lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT,
4800 IOERR_SLI_ABORTED);
4801
4802 return 0;
4803 }
4804
4805 /**
4806 * lpfc_nlp_logo_unreg - Unreg mailbox completion handler before LOGO
4807 * @phba: Pointer to HBA context object.
4808 * @pmb: Pointer to mailbox object.
4809 *
4810 * This function will issue an ELS LOGO command after completing
4811 * the UNREG_RPI.
4812 **/
4813 static void
lpfc_nlp_logo_unreg(struct lpfc_hba * phba,LPFC_MBOXQ_t * pmb)4814 lpfc_nlp_logo_unreg(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
4815 {
4816 struct lpfc_vport *vport = pmb->vport;
4817 struct lpfc_nodelist *ndlp;
4818
4819 ndlp = (struct lpfc_nodelist *)(pmb->ctx_ndlp);
4820 if (!ndlp)
4821 return;
4822 lpfc_issue_els_logo(vport, ndlp, 0);
4823 mempool_free(pmb, phba->mbox_mem_pool);
4824
4825 /* Check to see if there are any deferred events to process */
4826 if ((ndlp->nlp_flag & NLP_UNREG_INP) &&
4827 (ndlp->nlp_defer_did != NLP_EVT_NOTHING_PENDING)) {
4828 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
4829 "1434 UNREG cmpl deferred logo x%x "
4830 "on NPort x%x Data: x%x x%px\n",
4831 ndlp->nlp_rpi, ndlp->nlp_DID,
4832 ndlp->nlp_defer_did, ndlp);
4833
4834 ndlp->nlp_flag &= ~NLP_UNREG_INP;
4835 ndlp->nlp_defer_did = NLP_EVT_NOTHING_PENDING;
4836 lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
4837 } else {
4838 if (ndlp->nlp_flag & NLP_RELEASE_RPI) {
4839 lpfc_sli4_free_rpi(vport->phba, ndlp->nlp_rpi);
4840 ndlp->nlp_flag &= ~NLP_RELEASE_RPI;
4841 }
4842 ndlp->nlp_flag &= ~NLP_UNREG_INP;
4843 }
4844 }
4845
4846 /*
4847 * Sets the mailbox completion handler to be used for the
4848 * unreg_rpi command. The handler varies based on the state of
4849 * the port and what will be happening to the rpi next.
4850 */
4851 static void
lpfc_set_unreg_login_mbx_cmpl(struct lpfc_hba * phba,struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,LPFC_MBOXQ_t * mbox)4852 lpfc_set_unreg_login_mbx_cmpl(struct lpfc_hba *phba, struct lpfc_vport *vport,
4853 struct lpfc_nodelist *ndlp, LPFC_MBOXQ_t *mbox)
4854 {
4855 unsigned long iflags;
4856
4857 if (ndlp->nlp_flag & NLP_ISSUE_LOGO) {
4858 mbox->ctx_ndlp = ndlp;
4859 mbox->mbox_cmpl = lpfc_nlp_logo_unreg;
4860
4861 } else if (phba->sli_rev == LPFC_SLI_REV4 &&
4862 (!(vport->load_flag & FC_UNLOADING)) &&
4863 (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) >=
4864 LPFC_SLI_INTF_IF_TYPE_2) &&
4865 (kref_read(&ndlp->kref) > 0)) {
4866 mbox->ctx_ndlp = lpfc_nlp_get(ndlp);
4867 mbox->mbox_cmpl = lpfc_sli4_unreg_rpi_cmpl_clr;
4868 } else {
4869 if (vport->load_flag & FC_UNLOADING) {
4870 if (phba->sli_rev == LPFC_SLI_REV4) {
4871 spin_lock_irqsave(&vport->phba->ndlp_lock,
4872 iflags);
4873 ndlp->nlp_flag |= NLP_RELEASE_RPI;
4874 spin_unlock_irqrestore(&vport->phba->ndlp_lock,
4875 iflags);
4876 }
4877 lpfc_nlp_get(ndlp);
4878 }
4879 mbox->ctx_ndlp = ndlp;
4880 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
4881 }
4882 }
4883
4884 /*
4885 * Free rpi associated with LPFC_NODELIST entry.
4886 * This routine is called from lpfc_freenode(), when we are removing
4887 * a LPFC_NODELIST entry. It is also called if the driver initiates a
4888 * LOGO that completes successfully, and we are waiting to PLOGI back
4889 * to the remote NPort. In addition, it is called after we receive
4890 * and unsolicated ELS cmd, send back a rsp, the rsp completes and
4891 * we are waiting to PLOGI back to the remote NPort.
4892 */
4893 int
lpfc_unreg_rpi(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp)4894 lpfc_unreg_rpi(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
4895 {
4896 struct lpfc_hba *phba = vport->phba;
4897 LPFC_MBOXQ_t *mbox;
4898 int rc, acc_plogi = 1;
4899 uint16_t rpi;
4900
4901 if (ndlp->nlp_flag & NLP_RPI_REGISTERED ||
4902 ndlp->nlp_flag & NLP_REG_LOGIN_SEND) {
4903 if (ndlp->nlp_flag & NLP_REG_LOGIN_SEND)
4904 lpfc_printf_vlog(vport, KERN_INFO, LOG_SLI,
4905 "3366 RPI x%x needs to be "
4906 "unregistered nlp_flag x%x "
4907 "did x%x\n",
4908 ndlp->nlp_rpi, ndlp->nlp_flag,
4909 ndlp->nlp_DID);
4910
4911 /* If there is already an UNREG in progress for this ndlp,
4912 * no need to queue up another one.
4913 */
4914 if (ndlp->nlp_flag & NLP_UNREG_INP) {
4915 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
4916 "1436 unreg_rpi SKIP UNREG x%x on "
4917 "NPort x%x deferred x%x flg x%x "
4918 "Data: x%px\n",
4919 ndlp->nlp_rpi, ndlp->nlp_DID,
4920 ndlp->nlp_defer_did,
4921 ndlp->nlp_flag, ndlp);
4922 goto out;
4923 }
4924
4925 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
4926 if (mbox) {
4927 /* SLI4 ports require the physical rpi value. */
4928 rpi = ndlp->nlp_rpi;
4929 if (phba->sli_rev == LPFC_SLI_REV4)
4930 rpi = phba->sli4_hba.rpi_ids[ndlp->nlp_rpi];
4931
4932 lpfc_unreg_login(phba, vport->vpi, rpi, mbox);
4933 mbox->vport = vport;
4934 lpfc_set_unreg_login_mbx_cmpl(phba, vport, ndlp, mbox);
4935 if (mbox->mbox_cmpl == lpfc_sli4_unreg_rpi_cmpl_clr)
4936 /*
4937 * accept PLOGIs after unreg_rpi_cmpl
4938 */
4939 acc_plogi = 0;
4940 if (((ndlp->nlp_DID & Fabric_DID_MASK) !=
4941 Fabric_DID_MASK) &&
4942 (!(vport->fc_flag & FC_OFFLINE_MODE)))
4943 ndlp->nlp_flag |= NLP_UNREG_INP;
4944
4945 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
4946 "1433 unreg_rpi UNREG x%x on "
4947 "NPort x%x deferred flg x%x "
4948 "Data:x%px\n",
4949 ndlp->nlp_rpi, ndlp->nlp_DID,
4950 ndlp->nlp_flag, ndlp);
4951
4952 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
4953 if (rc == MBX_NOT_FINISHED) {
4954 mempool_free(mbox, phba->mbox_mem_pool);
4955 acc_plogi = 1;
4956 }
4957 }
4958 lpfc_no_rpi(phba, ndlp);
4959 out:
4960 if (phba->sli_rev != LPFC_SLI_REV4)
4961 ndlp->nlp_rpi = 0;
4962 ndlp->nlp_flag &= ~NLP_RPI_REGISTERED;
4963 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
4964 if (acc_plogi)
4965 ndlp->nlp_flag &= ~NLP_LOGO_ACC;
4966 return 1;
4967 }
4968 ndlp->nlp_flag &= ~NLP_LOGO_ACC;
4969 return 0;
4970 }
4971
4972 /**
4973 * lpfc_unreg_hba_rpis - Unregister rpis registered to the hba.
4974 * @phba: pointer to lpfc hba data structure.
4975 *
4976 * This routine is invoked to unregister all the currently registered RPIs
4977 * to the HBA.
4978 **/
4979 void
lpfc_unreg_hba_rpis(struct lpfc_hba * phba)4980 lpfc_unreg_hba_rpis(struct lpfc_hba *phba)
4981 {
4982 struct lpfc_vport **vports;
4983 struct lpfc_nodelist *ndlp;
4984 struct Scsi_Host *shost;
4985 int i;
4986
4987 vports = lpfc_create_vport_work_array(phba);
4988 if (!vports) {
4989 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY,
4990 "2884 Vport array allocation failed \n");
4991 return;
4992 }
4993 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
4994 shost = lpfc_shost_from_vport(vports[i]);
4995 spin_lock_irq(shost->host_lock);
4996 list_for_each_entry(ndlp, &vports[i]->fc_nodes, nlp_listp) {
4997 if (ndlp->nlp_flag & NLP_RPI_REGISTERED) {
4998 /* The mempool_alloc might sleep */
4999 spin_unlock_irq(shost->host_lock);
5000 lpfc_unreg_rpi(vports[i], ndlp);
5001 spin_lock_irq(shost->host_lock);
5002 }
5003 }
5004 spin_unlock_irq(shost->host_lock);
5005 }
5006 lpfc_destroy_vport_work_array(phba, vports);
5007 }
5008
5009 void
lpfc_unreg_all_rpis(struct lpfc_vport * vport)5010 lpfc_unreg_all_rpis(struct lpfc_vport *vport)
5011 {
5012 struct lpfc_hba *phba = vport->phba;
5013 LPFC_MBOXQ_t *mbox;
5014 int rc;
5015
5016 if (phba->sli_rev == LPFC_SLI_REV4) {
5017 lpfc_sli4_unreg_all_rpis(vport);
5018 return;
5019 }
5020
5021 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
5022 if (mbox) {
5023 lpfc_unreg_login(phba, vport->vpi, LPFC_UNREG_ALL_RPIS_VPORT,
5024 mbox);
5025 mbox->vport = vport;
5026 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
5027 mbox->ctx_ndlp = NULL;
5028 rc = lpfc_sli_issue_mbox_wait(phba, mbox, LPFC_MBOX_TMO);
5029 if (rc != MBX_TIMEOUT)
5030 mempool_free(mbox, phba->mbox_mem_pool);
5031
5032 if ((rc == MBX_TIMEOUT) || (rc == MBX_NOT_FINISHED))
5033 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX | LOG_VPORT,
5034 "1836 Could not issue "
5035 "unreg_login(all_rpis) status %d\n", rc);
5036 }
5037 }
5038
5039 void
lpfc_unreg_default_rpis(struct lpfc_vport * vport)5040 lpfc_unreg_default_rpis(struct lpfc_vport *vport)
5041 {
5042 struct lpfc_hba *phba = vport->phba;
5043 LPFC_MBOXQ_t *mbox;
5044 int rc;
5045
5046 /* Unreg DID is an SLI3 operation. */
5047 if (phba->sli_rev > LPFC_SLI_REV3)
5048 return;
5049
5050 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
5051 if (mbox) {
5052 lpfc_unreg_did(phba, vport->vpi, LPFC_UNREG_ALL_DFLT_RPIS,
5053 mbox);
5054 mbox->vport = vport;
5055 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
5056 mbox->ctx_ndlp = NULL;
5057 rc = lpfc_sli_issue_mbox_wait(phba, mbox, LPFC_MBOX_TMO);
5058 if (rc != MBX_TIMEOUT)
5059 mempool_free(mbox, phba->mbox_mem_pool);
5060
5061 if ((rc == MBX_TIMEOUT) || (rc == MBX_NOT_FINISHED))
5062 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX | LOG_VPORT,
5063 "1815 Could not issue "
5064 "unreg_did (default rpis) status %d\n",
5065 rc);
5066 }
5067 }
5068
5069 /*
5070 * Free resources associated with LPFC_NODELIST entry
5071 * so it can be freed.
5072 */
5073 static int
lpfc_cleanup_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp)5074 lpfc_cleanup_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
5075 {
5076 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
5077 struct lpfc_hba *phba = vport->phba;
5078 LPFC_MBOXQ_t *mb, *nextmb;
5079 struct lpfc_dmabuf *mp;
5080 unsigned long iflags;
5081
5082 /* Cleanup node for NPort <nlp_DID> */
5083 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
5084 "0900 Cleanup node for NPort x%x "
5085 "Data: x%x x%x x%x\n",
5086 ndlp->nlp_DID, ndlp->nlp_flag,
5087 ndlp->nlp_state, ndlp->nlp_rpi);
5088 if (NLP_CHK_FREE_REQ(ndlp)) {
5089 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NODE,
5090 "0280 %s: ndlp:x%px "
5091 "usgmap:x%x refcnt:%d\n",
5092 __func__, (void *)ndlp, ndlp->nlp_usg_map,
5093 kref_read(&ndlp->kref));
5094 lpfc_dequeue_node(vport, ndlp);
5095 } else {
5096 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NODE,
5097 "0281 %s: ndlp:x%px "
5098 "usgmap:x%x refcnt:%d\n",
5099 __func__, (void *)ndlp, ndlp->nlp_usg_map,
5100 kref_read(&ndlp->kref));
5101 lpfc_disable_node(vport, ndlp);
5102 }
5103
5104
5105 /* Don't need to clean up REG_LOGIN64 cmds for Default RPI cleanup */
5106
5107 /* cleanup any ndlp on mbox q waiting for reglogin cmpl */
5108 if ((mb = phba->sli.mbox_active)) {
5109 if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) &&
5110 !(mb->mbox_flag & LPFC_MBX_IMED_UNREG) &&
5111 (ndlp == (struct lpfc_nodelist *)mb->ctx_ndlp)) {
5112 mb->ctx_ndlp = NULL;
5113 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
5114 }
5115 }
5116
5117 spin_lock_irq(&phba->hbalock);
5118 /* Cleanup REG_LOGIN completions which are not yet processed */
5119 list_for_each_entry(mb, &phba->sli.mboxq_cmpl, list) {
5120 if ((mb->u.mb.mbxCommand != MBX_REG_LOGIN64) ||
5121 (mb->mbox_flag & LPFC_MBX_IMED_UNREG) ||
5122 (ndlp != (struct lpfc_nodelist *)mb->ctx_ndlp))
5123 continue;
5124
5125 mb->ctx_ndlp = NULL;
5126 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
5127 }
5128
5129 list_for_each_entry_safe(mb, nextmb, &phba->sli.mboxq, list) {
5130 if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) &&
5131 !(mb->mbox_flag & LPFC_MBX_IMED_UNREG) &&
5132 (ndlp == (struct lpfc_nodelist *)mb->ctx_ndlp)) {
5133 mp = (struct lpfc_dmabuf *)(mb->ctx_buf);
5134 if (mp) {
5135 __lpfc_mbuf_free(phba, mp->virt, mp->phys);
5136 kfree(mp);
5137 }
5138 list_del(&mb->list);
5139 mempool_free(mb, phba->mbox_mem_pool);
5140 /* We shall not invoke the lpfc_nlp_put to decrement
5141 * the ndlp reference count as we are in the process
5142 * of lpfc_nlp_release.
5143 */
5144 }
5145 }
5146 spin_unlock_irq(&phba->hbalock);
5147
5148 lpfc_els_abort(phba, ndlp);
5149
5150 spin_lock_irq(shost->host_lock);
5151 ndlp->nlp_flag &= ~NLP_DELAY_TMO;
5152 spin_unlock_irq(shost->host_lock);
5153
5154 ndlp->nlp_last_elscmd = 0;
5155 del_timer_sync(&ndlp->nlp_delayfunc);
5156
5157 list_del_init(&ndlp->els_retry_evt.evt_listp);
5158 list_del_init(&ndlp->dev_loss_evt.evt_listp);
5159 lpfc_cleanup_vports_rrqs(vport, ndlp);
5160 if (phba->sli_rev == LPFC_SLI_REV4)
5161 ndlp->nlp_flag |= NLP_RELEASE_RPI;
5162 if (!lpfc_unreg_rpi(vport, ndlp)) {
5163 /* Clean up unregistered and non freed rpis */
5164 if ((ndlp->nlp_flag & NLP_RELEASE_RPI) &&
5165 !(ndlp->nlp_rpi == LPFC_RPI_ALLOC_ERROR)) {
5166 lpfc_sli4_free_rpi(vport->phba,
5167 ndlp->nlp_rpi);
5168 spin_lock_irqsave(&vport->phba->ndlp_lock,
5169 iflags);
5170 ndlp->nlp_flag &= ~NLP_RELEASE_RPI;
5171 ndlp->nlp_rpi = LPFC_RPI_ALLOC_ERROR;
5172 spin_unlock_irqrestore(&vport->phba->ndlp_lock,
5173 iflags);
5174 }
5175 }
5176 return 0;
5177 }
5178
5179 /*
5180 * Check to see if we can free the nlp back to the freelist.
5181 * If we are in the middle of using the nlp in the discovery state
5182 * machine, defer the free till we reach the end of the state machine.
5183 */
5184 static void
lpfc_nlp_remove(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp)5185 lpfc_nlp_remove(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
5186 {
5187 struct lpfc_hba *phba = vport->phba;
5188 struct lpfc_rport_data *rdata;
5189 struct fc_rport *rport;
5190 LPFC_MBOXQ_t *mbox;
5191 int rc;
5192
5193 lpfc_cancel_retry_delay_tmo(vport, ndlp);
5194 if ((ndlp->nlp_flag & NLP_DEFER_RM) &&
5195 !(ndlp->nlp_flag & NLP_REG_LOGIN_SEND) &&
5196 !(ndlp->nlp_flag & NLP_RPI_REGISTERED) &&
5197 phba->sli_rev != LPFC_SLI_REV4) {
5198 /* For this case we need to cleanup the default rpi
5199 * allocated by the firmware.
5200 */
5201 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
5202 "0005 rpi:%x DID:%x flg:%x %d map:%x x%px\n",
5203 ndlp->nlp_rpi, ndlp->nlp_DID, ndlp->nlp_flag,
5204 kref_read(&ndlp->kref),
5205 ndlp->nlp_usg_map, ndlp);
5206 if ((mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL))
5207 != NULL) {
5208 rc = lpfc_reg_rpi(phba, vport->vpi, ndlp->nlp_DID,
5209 (uint8_t *) &vport->fc_sparam, mbox, ndlp->nlp_rpi);
5210 if (rc) {
5211 mempool_free(mbox, phba->mbox_mem_pool);
5212 }
5213 else {
5214 mbox->mbox_flag |= LPFC_MBX_IMED_UNREG;
5215 mbox->mbox_cmpl = lpfc_mbx_cmpl_dflt_rpi;
5216 mbox->vport = vport;
5217 mbox->ctx_ndlp = ndlp;
5218 rc =lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
5219 if (rc == MBX_NOT_FINISHED) {
5220 mempool_free(mbox, phba->mbox_mem_pool);
5221 }
5222 }
5223 }
5224 }
5225 lpfc_cleanup_node(vport, ndlp);
5226
5227 /*
5228 * ndlp->rport must be set to NULL before it reaches here
5229 * i.e. break rport/node link before doing lpfc_nlp_put for
5230 * registered rport and then drop the reference of rport.
5231 */
5232 if (ndlp->rport) {
5233 /*
5234 * extra lpfc_nlp_put dropped the reference of ndlp
5235 * for registered rport so need to cleanup rport
5236 */
5237 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NODE,
5238 "0940 removed node x%px DID x%x "
5239 " rport not null x%px\n",
5240 ndlp, ndlp->nlp_DID, ndlp->rport);
5241 rport = ndlp->rport;
5242 rdata = rport->dd_data;
5243 rdata->pnode = NULL;
5244 ndlp->rport = NULL;
5245 put_device(&rport->dev);
5246 }
5247 }
5248
5249 static int
lpfc_matchdid(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,uint32_t did)5250 lpfc_matchdid(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
5251 uint32_t did)
5252 {
5253 D_ID mydid, ndlpdid, matchdid;
5254
5255 if (did == Bcast_DID)
5256 return 0;
5257
5258 /* First check for Direct match */
5259 if (ndlp->nlp_DID == did)
5260 return 1;
5261
5262 /* Next check for area/domain identically equals 0 match */
5263 mydid.un.word = vport->fc_myDID;
5264 if ((mydid.un.b.domain == 0) && (mydid.un.b.area == 0)) {
5265 return 0;
5266 }
5267
5268 matchdid.un.word = did;
5269 ndlpdid.un.word = ndlp->nlp_DID;
5270 if (matchdid.un.b.id == ndlpdid.un.b.id) {
5271 if ((mydid.un.b.domain == matchdid.un.b.domain) &&
5272 (mydid.un.b.area == matchdid.un.b.area)) {
5273 /* This code is supposed to match the ID
5274 * for a private loop device that is
5275 * connect to fl_port. But we need to
5276 * check that the port did not just go
5277 * from pt2pt to fabric or we could end
5278 * up matching ndlp->nlp_DID 000001 to
5279 * fabric DID 0x20101
5280 */
5281 if ((ndlpdid.un.b.domain == 0) &&
5282 (ndlpdid.un.b.area == 0)) {
5283 if (ndlpdid.un.b.id &&
5284 vport->phba->fc_topology ==
5285 LPFC_TOPOLOGY_LOOP)
5286 return 1;
5287 }
5288 return 0;
5289 }
5290
5291 matchdid.un.word = ndlp->nlp_DID;
5292 if ((mydid.un.b.domain == ndlpdid.un.b.domain) &&
5293 (mydid.un.b.area == ndlpdid.un.b.area)) {
5294 if ((matchdid.un.b.domain == 0) &&
5295 (matchdid.un.b.area == 0)) {
5296 if (matchdid.un.b.id)
5297 return 1;
5298 }
5299 }
5300 }
5301 return 0;
5302 }
5303
5304 /* Search for a nodelist entry */
5305 static struct lpfc_nodelist *
__lpfc_findnode_did(struct lpfc_vport * vport,uint32_t did)5306 __lpfc_findnode_did(struct lpfc_vport *vport, uint32_t did)
5307 {
5308 struct lpfc_nodelist *ndlp;
5309 uint32_t data1;
5310
5311 list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
5312 if (lpfc_matchdid(vport, ndlp, did)) {
5313 data1 = (((uint32_t)ndlp->nlp_state << 24) |
5314 ((uint32_t)ndlp->nlp_xri << 16) |
5315 ((uint32_t)ndlp->nlp_type << 8) |
5316 ((uint32_t)ndlp->nlp_usg_map & 0xff));
5317 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
5318 "0929 FIND node DID "
5319 "Data: x%px x%x x%x x%x x%x x%px\n",
5320 ndlp, ndlp->nlp_DID,
5321 ndlp->nlp_flag, data1, ndlp->nlp_rpi,
5322 ndlp->active_rrqs_xri_bitmap);
5323 return ndlp;
5324 }
5325 }
5326
5327 /* FIND node did <did> NOT FOUND */
5328 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
5329 "0932 FIND node did x%x NOT FOUND.\n", did);
5330 return NULL;
5331 }
5332
5333 struct lpfc_nodelist *
lpfc_findnode_did(struct lpfc_vport * vport,uint32_t did)5334 lpfc_findnode_did(struct lpfc_vport *vport, uint32_t did)
5335 {
5336 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
5337 struct lpfc_nodelist *ndlp;
5338 unsigned long iflags;
5339
5340 spin_lock_irqsave(shost->host_lock, iflags);
5341 ndlp = __lpfc_findnode_did(vport, did);
5342 spin_unlock_irqrestore(shost->host_lock, iflags);
5343 return ndlp;
5344 }
5345
5346 struct lpfc_nodelist *
lpfc_findnode_mapped(struct lpfc_vport * vport)5347 lpfc_findnode_mapped(struct lpfc_vport *vport)
5348 {
5349 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
5350 struct lpfc_nodelist *ndlp;
5351 uint32_t data1;
5352 unsigned long iflags;
5353
5354 spin_lock_irqsave(shost->host_lock, iflags);
5355
5356 list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
5357 if (ndlp->nlp_state == NLP_STE_UNMAPPED_NODE ||
5358 ndlp->nlp_state == NLP_STE_MAPPED_NODE) {
5359 data1 = (((uint32_t)ndlp->nlp_state << 24) |
5360 ((uint32_t)ndlp->nlp_xri << 16) |
5361 ((uint32_t)ndlp->nlp_type << 8) |
5362 ((uint32_t)ndlp->nlp_rpi & 0xff));
5363 spin_unlock_irqrestore(shost->host_lock, iflags);
5364 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
5365 "2025 FIND node DID "
5366 "Data: x%px x%x x%x x%x x%px\n",
5367 ndlp, ndlp->nlp_DID,
5368 ndlp->nlp_flag, data1,
5369 ndlp->active_rrqs_xri_bitmap);
5370 return ndlp;
5371 }
5372 }
5373 spin_unlock_irqrestore(shost->host_lock, iflags);
5374
5375 /* FIND node did <did> NOT FOUND */
5376 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
5377 "2026 FIND mapped did NOT FOUND.\n");
5378 return NULL;
5379 }
5380
5381 struct lpfc_nodelist *
lpfc_setup_disc_node(struct lpfc_vport * vport,uint32_t did)5382 lpfc_setup_disc_node(struct lpfc_vport *vport, uint32_t did)
5383 {
5384 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
5385 struct lpfc_nodelist *ndlp;
5386
5387 ndlp = lpfc_findnode_did(vport, did);
5388 if (!ndlp) {
5389 if (vport->phba->nvmet_support)
5390 return NULL;
5391 if ((vport->fc_flag & FC_RSCN_MODE) != 0 &&
5392 lpfc_rscn_payload_check(vport, did) == 0)
5393 return NULL;
5394 ndlp = lpfc_nlp_init(vport, did);
5395 if (!ndlp)
5396 return NULL;
5397 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
5398 spin_lock_irq(shost->host_lock);
5399 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
5400 spin_unlock_irq(shost->host_lock);
5401 return ndlp;
5402 } else if (!NLP_CHK_NODE_ACT(ndlp)) {
5403 if (vport->phba->nvmet_support)
5404 return NULL;
5405 ndlp = lpfc_enable_node(vport, ndlp, NLP_STE_NPR_NODE);
5406 if (!ndlp) {
5407 lpfc_printf_vlog(vport, KERN_WARNING, LOG_SLI,
5408 "0014 Could not enable ndlp\n");
5409 return NULL;
5410 }
5411 spin_lock_irq(shost->host_lock);
5412 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
5413 spin_unlock_irq(shost->host_lock);
5414 return ndlp;
5415 }
5416
5417 /* The NVME Target does not want to actively manage an rport.
5418 * The goal is to allow the target to reset its state and clear
5419 * pending IO in preparation for the initiator to recover.
5420 */
5421 if ((vport->fc_flag & FC_RSCN_MODE) &&
5422 !(vport->fc_flag & FC_NDISC_ACTIVE)) {
5423 if (lpfc_rscn_payload_check(vport, did)) {
5424
5425 /* Since this node is marked for discovery,
5426 * delay timeout is not needed.
5427 */
5428 lpfc_cancel_retry_delay_tmo(vport, ndlp);
5429
5430 /* NVME Target mode waits until rport is known to be
5431 * impacted by the RSCN before it transitions. No
5432 * active management - just go to NPR provided the
5433 * node had a valid login.
5434 */
5435 if (vport->phba->nvmet_support)
5436 return ndlp;
5437
5438 /* If we've already received a PLOGI from this NPort
5439 * we don't need to try to discover it again.
5440 */
5441 if (ndlp->nlp_flag & NLP_RCV_PLOGI &&
5442 !(ndlp->nlp_type &
5443 (NLP_FCP_TARGET | NLP_NVME_TARGET)))
5444 return NULL;
5445
5446 ndlp->nlp_prev_state = ndlp->nlp_state;
5447 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
5448
5449 spin_lock_irq(shost->host_lock);
5450 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
5451 spin_unlock_irq(shost->host_lock);
5452 } else
5453 ndlp = NULL;
5454 } else {
5455 /* If the initiator received a PLOGI from this NPort or if the
5456 * initiator is already in the process of discovery on it,
5457 * there's no need to try to discover it again.
5458 */
5459 if (ndlp->nlp_state == NLP_STE_ADISC_ISSUE ||
5460 ndlp->nlp_state == NLP_STE_PLOGI_ISSUE ||
5461 (!vport->phba->nvmet_support &&
5462 ndlp->nlp_flag & NLP_RCV_PLOGI))
5463 return NULL;
5464
5465 if (vport->phba->nvmet_support)
5466 return ndlp;
5467
5468 /* Moving to NPR state clears unsolicited flags and
5469 * allows for rediscovery
5470 */
5471 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
5472
5473 spin_lock_irq(shost->host_lock);
5474 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
5475 spin_unlock_irq(shost->host_lock);
5476 }
5477 return ndlp;
5478 }
5479
5480 /* Build a list of nodes to discover based on the loopmap */
5481 void
lpfc_disc_list_loopmap(struct lpfc_vport * vport)5482 lpfc_disc_list_loopmap(struct lpfc_vport *vport)
5483 {
5484 struct lpfc_hba *phba = vport->phba;
5485 int j;
5486 uint32_t alpa, index;
5487
5488 if (!lpfc_is_link_up(phba))
5489 return;
5490
5491 if (phba->fc_topology != LPFC_TOPOLOGY_LOOP)
5492 return;
5493
5494 /* Check for loop map present or not */
5495 if (phba->alpa_map[0]) {
5496 for (j = 1; j <= phba->alpa_map[0]; j++) {
5497 alpa = phba->alpa_map[j];
5498 if (((vport->fc_myDID & 0xff) == alpa) || (alpa == 0))
5499 continue;
5500 lpfc_setup_disc_node(vport, alpa);
5501 }
5502 } else {
5503 /* No alpamap, so try all alpa's */
5504 for (j = 0; j < FC_MAXLOOP; j++) {
5505 /* If cfg_scan_down is set, start from highest
5506 * ALPA (0xef) to lowest (0x1).
5507 */
5508 if (vport->cfg_scan_down)
5509 index = j;
5510 else
5511 index = FC_MAXLOOP - j - 1;
5512 alpa = lpfcAlpaArray[index];
5513 if ((vport->fc_myDID & 0xff) == alpa)
5514 continue;
5515 lpfc_setup_disc_node(vport, alpa);
5516 }
5517 }
5518 return;
5519 }
5520
5521 /* SLI3 only */
5522 void
lpfc_issue_clear_la(struct lpfc_hba * phba,struct lpfc_vport * vport)5523 lpfc_issue_clear_la(struct lpfc_hba *phba, struct lpfc_vport *vport)
5524 {
5525 LPFC_MBOXQ_t *mbox;
5526 struct lpfc_sli *psli = &phba->sli;
5527 struct lpfc_sli_ring *extra_ring = &psli->sli3_ring[LPFC_EXTRA_RING];
5528 struct lpfc_sli_ring *fcp_ring = &psli->sli3_ring[LPFC_FCP_RING];
5529 int rc;
5530
5531 /*
5532 * if it's not a physical port or if we already send
5533 * clear_la then don't send it.
5534 */
5535 if ((phba->link_state >= LPFC_CLEAR_LA) ||
5536 (vport->port_type != LPFC_PHYSICAL_PORT) ||
5537 (phba->sli_rev == LPFC_SLI_REV4))
5538 return;
5539
5540 /* Link up discovery */
5541 if ((mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL)) != NULL) {
5542 phba->link_state = LPFC_CLEAR_LA;
5543 lpfc_clear_la(phba, mbox);
5544 mbox->mbox_cmpl = lpfc_mbx_cmpl_clear_la;
5545 mbox->vport = vport;
5546 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
5547 if (rc == MBX_NOT_FINISHED) {
5548 mempool_free(mbox, phba->mbox_mem_pool);
5549 lpfc_disc_flush_list(vport);
5550 extra_ring->flag &= ~LPFC_STOP_IOCB_EVENT;
5551 fcp_ring->flag &= ~LPFC_STOP_IOCB_EVENT;
5552 phba->link_state = LPFC_HBA_ERROR;
5553 }
5554 }
5555 }
5556
5557 /* Reg_vpi to tell firmware to resume normal operations */
5558 void
lpfc_issue_reg_vpi(struct lpfc_hba * phba,struct lpfc_vport * vport)5559 lpfc_issue_reg_vpi(struct lpfc_hba *phba, struct lpfc_vport *vport)
5560 {
5561 LPFC_MBOXQ_t *regvpimbox;
5562
5563 regvpimbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
5564 if (regvpimbox) {
5565 lpfc_reg_vpi(vport, regvpimbox);
5566 regvpimbox->mbox_cmpl = lpfc_mbx_cmpl_reg_vpi;
5567 regvpimbox->vport = vport;
5568 if (lpfc_sli_issue_mbox(phba, regvpimbox, MBX_NOWAIT)
5569 == MBX_NOT_FINISHED) {
5570 mempool_free(regvpimbox, phba->mbox_mem_pool);
5571 }
5572 }
5573 }
5574
5575 /* Start Link up / RSCN discovery on NPR nodes */
5576 void
lpfc_disc_start(struct lpfc_vport * vport)5577 lpfc_disc_start(struct lpfc_vport *vport)
5578 {
5579 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
5580 struct lpfc_hba *phba = vport->phba;
5581 uint32_t num_sent;
5582 uint32_t clear_la_pending;
5583
5584 if (!lpfc_is_link_up(phba)) {
5585 lpfc_printf_vlog(vport, KERN_INFO, LOG_SLI,
5586 "3315 Link is not up %x\n",
5587 phba->link_state);
5588 return;
5589 }
5590
5591 if (phba->link_state == LPFC_CLEAR_LA)
5592 clear_la_pending = 1;
5593 else
5594 clear_la_pending = 0;
5595
5596 if (vport->port_state < LPFC_VPORT_READY)
5597 vport->port_state = LPFC_DISC_AUTH;
5598
5599 lpfc_set_disctmo(vport);
5600
5601 vport->fc_prevDID = vport->fc_myDID;
5602 vport->num_disc_nodes = 0;
5603
5604 /* Start Discovery state <hba_state> */
5605 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
5606 "0202 Start Discovery hba state x%x "
5607 "Data: x%x x%x x%x\n",
5608 vport->port_state, vport->fc_flag, vport->fc_plogi_cnt,
5609 vport->fc_adisc_cnt);
5610
5611 /* First do ADISCs - if any */
5612 num_sent = lpfc_els_disc_adisc(vport);
5613
5614 if (num_sent)
5615 return;
5616
5617 /* Register the VPI for SLI3, NPIV only. */
5618 if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
5619 !(vport->fc_flag & FC_PT2PT) &&
5620 !(vport->fc_flag & FC_RSCN_MODE) &&
5621 (phba->sli_rev < LPFC_SLI_REV4)) {
5622 lpfc_issue_clear_la(phba, vport);
5623 lpfc_issue_reg_vpi(phba, vport);
5624 return;
5625 }
5626
5627 /*
5628 * For SLI2, we need to set port_state to READY and continue
5629 * discovery.
5630 */
5631 if (vport->port_state < LPFC_VPORT_READY && !clear_la_pending) {
5632 /* If we get here, there is nothing to ADISC */
5633 lpfc_issue_clear_la(phba, vport);
5634
5635 if (!(vport->fc_flag & FC_ABORT_DISCOVERY)) {
5636 vport->num_disc_nodes = 0;
5637 /* go thru NPR nodes and issue ELS PLOGIs */
5638 if (vport->fc_npr_cnt)
5639 lpfc_els_disc_plogi(vport);
5640
5641 if (!vport->num_disc_nodes) {
5642 spin_lock_irq(shost->host_lock);
5643 vport->fc_flag &= ~FC_NDISC_ACTIVE;
5644 spin_unlock_irq(shost->host_lock);
5645 lpfc_can_disctmo(vport);
5646 }
5647 }
5648 vport->port_state = LPFC_VPORT_READY;
5649 } else {
5650 /* Next do PLOGIs - if any */
5651 num_sent = lpfc_els_disc_plogi(vport);
5652
5653 if (num_sent)
5654 return;
5655
5656 if (vport->fc_flag & FC_RSCN_MODE) {
5657 /* Check to see if more RSCNs came in while we
5658 * were processing this one.
5659 */
5660 if ((vport->fc_rscn_id_cnt == 0) &&
5661 (!(vport->fc_flag & FC_RSCN_DISCOVERY))) {
5662 spin_lock_irq(shost->host_lock);
5663 vport->fc_flag &= ~FC_RSCN_MODE;
5664 spin_unlock_irq(shost->host_lock);
5665 lpfc_can_disctmo(vport);
5666 } else
5667 lpfc_els_handle_rscn(vport);
5668 }
5669 }
5670 return;
5671 }
5672
5673 /*
5674 * Ignore completion for all IOCBs on tx and txcmpl queue for ELS
5675 * ring the match the sppecified nodelist.
5676 */
5677 static void
lpfc_free_tx(struct lpfc_hba * phba,struct lpfc_nodelist * ndlp)5678 lpfc_free_tx(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
5679 {
5680 LIST_HEAD(completions);
5681 IOCB_t *icmd;
5682 struct lpfc_iocbq *iocb, *next_iocb;
5683 struct lpfc_sli_ring *pring;
5684
5685 pring = lpfc_phba_elsring(phba);
5686 if (unlikely(!pring))
5687 return;
5688
5689 /* Error matching iocb on txq or txcmplq
5690 * First check the txq.
5691 */
5692 spin_lock_irq(&phba->hbalock);
5693 list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) {
5694 if (iocb->context1 != ndlp) {
5695 continue;
5696 }
5697 icmd = &iocb->iocb;
5698 if ((icmd->ulpCommand == CMD_ELS_REQUEST64_CR) ||
5699 (icmd->ulpCommand == CMD_XMIT_ELS_RSP64_CX)) {
5700
5701 list_move_tail(&iocb->list, &completions);
5702 }
5703 }
5704
5705 /* Next check the txcmplq */
5706 list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq, list) {
5707 if (iocb->context1 != ndlp) {
5708 continue;
5709 }
5710 icmd = &iocb->iocb;
5711 if (icmd->ulpCommand == CMD_ELS_REQUEST64_CR ||
5712 icmd->ulpCommand == CMD_XMIT_ELS_RSP64_CX) {
5713 lpfc_sli_issue_abort_iotag(phba, pring, iocb);
5714 }
5715 }
5716 spin_unlock_irq(&phba->hbalock);
5717
5718 /* Cancel all the IOCBs from the completions list */
5719 lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT,
5720 IOERR_SLI_ABORTED);
5721 }
5722
5723 static void
lpfc_disc_flush_list(struct lpfc_vport * vport)5724 lpfc_disc_flush_list(struct lpfc_vport *vport)
5725 {
5726 struct lpfc_nodelist *ndlp, *next_ndlp;
5727 struct lpfc_hba *phba = vport->phba;
5728
5729 if (vport->fc_plogi_cnt || vport->fc_adisc_cnt) {
5730 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes,
5731 nlp_listp) {
5732 if (!NLP_CHK_NODE_ACT(ndlp))
5733 continue;
5734 if (ndlp->nlp_state == NLP_STE_PLOGI_ISSUE ||
5735 ndlp->nlp_state == NLP_STE_ADISC_ISSUE) {
5736 lpfc_free_tx(phba, ndlp);
5737 }
5738 }
5739 }
5740 }
5741
5742 void
lpfc_cleanup_discovery_resources(struct lpfc_vport * vport)5743 lpfc_cleanup_discovery_resources(struct lpfc_vport *vport)
5744 {
5745 lpfc_els_flush_rscn(vport);
5746 lpfc_els_flush_cmd(vport);
5747 lpfc_disc_flush_list(vport);
5748 }
5749
5750 /*****************************************************************************/
5751 /*
5752 * NAME: lpfc_disc_timeout
5753 *
5754 * FUNCTION: Fibre Channel driver discovery timeout routine.
5755 *
5756 * EXECUTION ENVIRONMENT: interrupt only
5757 *
5758 * CALLED FROM:
5759 * Timer function
5760 *
5761 * RETURNS:
5762 * none
5763 */
5764 /*****************************************************************************/
5765 void
lpfc_disc_timeout(struct timer_list * t)5766 lpfc_disc_timeout(struct timer_list *t)
5767 {
5768 struct lpfc_vport *vport = from_timer(vport, t, fc_disctmo);
5769 struct lpfc_hba *phba = vport->phba;
5770 uint32_t tmo_posted;
5771 unsigned long flags = 0;
5772
5773 if (unlikely(!phba))
5774 return;
5775
5776 spin_lock_irqsave(&vport->work_port_lock, flags);
5777 tmo_posted = vport->work_port_events & WORKER_DISC_TMO;
5778 if (!tmo_posted)
5779 vport->work_port_events |= WORKER_DISC_TMO;
5780 spin_unlock_irqrestore(&vport->work_port_lock, flags);
5781
5782 if (!tmo_posted)
5783 lpfc_worker_wake_up(phba);
5784 return;
5785 }
5786
5787 static void
lpfc_disc_timeout_handler(struct lpfc_vport * vport)5788 lpfc_disc_timeout_handler(struct lpfc_vport *vport)
5789 {
5790 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
5791 struct lpfc_hba *phba = vport->phba;
5792 struct lpfc_sli *psli = &phba->sli;
5793 struct lpfc_nodelist *ndlp, *next_ndlp;
5794 LPFC_MBOXQ_t *initlinkmbox;
5795 int rc, clrlaerr = 0;
5796
5797 if (!(vport->fc_flag & FC_DISC_TMO))
5798 return;
5799
5800 spin_lock_irq(shost->host_lock);
5801 vport->fc_flag &= ~FC_DISC_TMO;
5802 spin_unlock_irq(shost->host_lock);
5803
5804 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
5805 "disc timeout: state:x%x rtry:x%x flg:x%x",
5806 vport->port_state, vport->fc_ns_retry, vport->fc_flag);
5807
5808 switch (vport->port_state) {
5809
5810 case LPFC_LOCAL_CFG_LINK:
5811 /*
5812 * port_state is identically LPFC_LOCAL_CFG_LINK while
5813 * waiting for FAN timeout
5814 */
5815 lpfc_printf_vlog(vport, KERN_WARNING, LOG_DISCOVERY,
5816 "0221 FAN timeout\n");
5817
5818 /* Start discovery by sending FLOGI, clean up old rpis */
5819 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes,
5820 nlp_listp) {
5821 if (!NLP_CHK_NODE_ACT(ndlp))
5822 continue;
5823 if (ndlp->nlp_state != NLP_STE_NPR_NODE)
5824 continue;
5825 if (ndlp->nlp_type & NLP_FABRIC) {
5826 /* Clean up the ndlp on Fabric connections */
5827 lpfc_drop_node(vport, ndlp);
5828
5829 } else if (!(ndlp->nlp_flag & NLP_NPR_ADISC)) {
5830 /* Fail outstanding IO now since device
5831 * is marked for PLOGI.
5832 */
5833 lpfc_unreg_rpi(vport, ndlp);
5834 }
5835 }
5836 if (vport->port_state != LPFC_FLOGI) {
5837 if (phba->sli_rev <= LPFC_SLI_REV3)
5838 lpfc_initial_flogi(vport);
5839 else
5840 lpfc_issue_init_vfi(vport);
5841 return;
5842 }
5843 break;
5844
5845 case LPFC_FDISC:
5846 case LPFC_FLOGI:
5847 /* port_state is identically LPFC_FLOGI while waiting for FLOGI cmpl */
5848 /* Initial FLOGI timeout */
5849 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
5850 "0222 Initial %s timeout\n",
5851 vport->vpi ? "FDISC" : "FLOGI");
5852
5853 /* Assume no Fabric and go on with discovery.
5854 * Check for outstanding ELS FLOGI to abort.
5855 */
5856
5857 /* FLOGI failed, so just use loop map to make discovery list */
5858 lpfc_disc_list_loopmap(vport);
5859
5860 /* Start discovery */
5861 lpfc_disc_start(vport);
5862 break;
5863
5864 case LPFC_FABRIC_CFG_LINK:
5865 /* hba_state is identically LPFC_FABRIC_CFG_LINK while waiting for
5866 NameServer login */
5867 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
5868 "0223 Timeout while waiting for "
5869 "NameServer login\n");
5870 /* Next look for NameServer ndlp */
5871 ndlp = lpfc_findnode_did(vport, NameServer_DID);
5872 if (ndlp && NLP_CHK_NODE_ACT(ndlp))
5873 lpfc_els_abort(phba, ndlp);
5874
5875 /* ReStart discovery */
5876 goto restart_disc;
5877
5878 case LPFC_NS_QRY:
5879 /* Check for wait for NameServer Rsp timeout */
5880 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
5881 "0224 NameServer Query timeout "
5882 "Data: x%x x%x\n",
5883 vport->fc_ns_retry, LPFC_MAX_NS_RETRY);
5884
5885 if (vport->fc_ns_retry < LPFC_MAX_NS_RETRY) {
5886 /* Try it one more time */
5887 vport->fc_ns_retry++;
5888 vport->gidft_inp = 0;
5889 rc = lpfc_issue_gidft(vport);
5890 if (rc == 0)
5891 break;
5892 }
5893 vport->fc_ns_retry = 0;
5894
5895 restart_disc:
5896 /*
5897 * Discovery is over.
5898 * set port_state to PORT_READY if SLI2.
5899 * cmpl_reg_vpi will set port_state to READY for SLI3.
5900 */
5901 if (phba->sli_rev < LPFC_SLI_REV4) {
5902 if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)
5903 lpfc_issue_reg_vpi(phba, vport);
5904 else {
5905 lpfc_issue_clear_la(phba, vport);
5906 vport->port_state = LPFC_VPORT_READY;
5907 }
5908 }
5909
5910 /* Setup and issue mailbox INITIALIZE LINK command */
5911 initlinkmbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
5912 if (!initlinkmbox) {
5913 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
5914 "0206 Device Discovery "
5915 "completion error\n");
5916 phba->link_state = LPFC_HBA_ERROR;
5917 break;
5918 }
5919
5920 lpfc_linkdown(phba);
5921 lpfc_init_link(phba, initlinkmbox, phba->cfg_topology,
5922 phba->cfg_link_speed);
5923 initlinkmbox->u.mb.un.varInitLnk.lipsr_AL_PA = 0;
5924 initlinkmbox->vport = vport;
5925 initlinkmbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
5926 rc = lpfc_sli_issue_mbox(phba, initlinkmbox, MBX_NOWAIT);
5927 lpfc_set_loopback_flag(phba);
5928 if (rc == MBX_NOT_FINISHED)
5929 mempool_free(initlinkmbox, phba->mbox_mem_pool);
5930
5931 break;
5932
5933 case LPFC_DISC_AUTH:
5934 /* Node Authentication timeout */
5935 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
5936 "0227 Node Authentication timeout\n");
5937 lpfc_disc_flush_list(vport);
5938
5939 /*
5940 * set port_state to PORT_READY if SLI2.
5941 * cmpl_reg_vpi will set port_state to READY for SLI3.
5942 */
5943 if (phba->sli_rev < LPFC_SLI_REV4) {
5944 if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)
5945 lpfc_issue_reg_vpi(phba, vport);
5946 else { /* NPIV Not enabled */
5947 lpfc_issue_clear_la(phba, vport);
5948 vport->port_state = LPFC_VPORT_READY;
5949 }
5950 }
5951 break;
5952
5953 case LPFC_VPORT_READY:
5954 if (vport->fc_flag & FC_RSCN_MODE) {
5955 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
5956 "0231 RSCN timeout Data: x%x "
5957 "x%x\n",
5958 vport->fc_ns_retry, LPFC_MAX_NS_RETRY);
5959
5960 /* Cleanup any outstanding ELS commands */
5961 lpfc_els_flush_cmd(vport);
5962
5963 lpfc_els_flush_rscn(vport);
5964 lpfc_disc_flush_list(vport);
5965 }
5966 break;
5967
5968 default:
5969 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
5970 "0273 Unexpected discovery timeout, "
5971 "vport State x%x\n", vport->port_state);
5972 break;
5973 }
5974
5975 switch (phba->link_state) {
5976 case LPFC_CLEAR_LA:
5977 /* CLEAR LA timeout */
5978 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
5979 "0228 CLEAR LA timeout\n");
5980 clrlaerr = 1;
5981 break;
5982
5983 case LPFC_LINK_UP:
5984 lpfc_issue_clear_la(phba, vport);
5985 /* fall through */
5986 case LPFC_LINK_UNKNOWN:
5987 case LPFC_WARM_START:
5988 case LPFC_INIT_START:
5989 case LPFC_INIT_MBX_CMDS:
5990 case LPFC_LINK_DOWN:
5991 case LPFC_HBA_ERROR:
5992 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
5993 "0230 Unexpected timeout, hba link "
5994 "state x%x\n", phba->link_state);
5995 clrlaerr = 1;
5996 break;
5997
5998 case LPFC_HBA_READY:
5999 break;
6000 }
6001
6002 if (clrlaerr) {
6003 lpfc_disc_flush_list(vport);
6004 if (phba->sli_rev != LPFC_SLI_REV4) {
6005 psli->sli3_ring[(LPFC_EXTRA_RING)].flag &=
6006 ~LPFC_STOP_IOCB_EVENT;
6007 psli->sli3_ring[LPFC_FCP_RING].flag &=
6008 ~LPFC_STOP_IOCB_EVENT;
6009 }
6010 vport->port_state = LPFC_VPORT_READY;
6011 }
6012 return;
6013 }
6014
6015 /*
6016 * This routine handles processing a NameServer REG_LOGIN mailbox
6017 * command upon completion. It is setup in the LPFC_MBOXQ
6018 * as the completion routine when the command is
6019 * handed off to the SLI layer.
6020 */
6021 void
lpfc_mbx_cmpl_fdmi_reg_login(struct lpfc_hba * phba,LPFC_MBOXQ_t * pmb)6022 lpfc_mbx_cmpl_fdmi_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
6023 {
6024 MAILBOX_t *mb = &pmb->u.mb;
6025 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *)(pmb->ctx_buf);
6026 struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *)pmb->ctx_ndlp;
6027 struct lpfc_vport *vport = pmb->vport;
6028
6029 pmb->ctx_buf = NULL;
6030 pmb->ctx_ndlp = NULL;
6031
6032 if (phba->sli_rev < LPFC_SLI_REV4)
6033 ndlp->nlp_rpi = mb->un.varWords[0];
6034 ndlp->nlp_flag |= NLP_RPI_REGISTERED;
6035 ndlp->nlp_type |= NLP_FABRIC;
6036 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
6037 lpfc_printf_vlog(vport, KERN_INFO, LOG_SLI,
6038 "0004 rpi:%x DID:%x flg:%x %d map:%x x%px\n",
6039 ndlp->nlp_rpi, ndlp->nlp_DID, ndlp->nlp_flag,
6040 kref_read(&ndlp->kref),
6041 ndlp->nlp_usg_map, ndlp);
6042 /*
6043 * Start issuing Fabric-Device Management Interface (FDMI) command to
6044 * 0xfffffa (FDMI well known port).
6045 * DHBA -> DPRT -> RHBA -> RPA (physical port)
6046 * DPRT -> RPRT (vports)
6047 */
6048 if (vport->port_type == LPFC_PHYSICAL_PORT)
6049 lpfc_fdmi_cmd(vport, ndlp, SLI_MGMT_DHBA, 0);
6050 else
6051 lpfc_fdmi_cmd(vport, ndlp, SLI_MGMT_DPRT, 0);
6052
6053
6054 /* decrement the node reference count held for this callback
6055 * function.
6056 */
6057 lpfc_nlp_put(ndlp);
6058 lpfc_mbuf_free(phba, mp->virt, mp->phys);
6059 kfree(mp);
6060 mempool_free(pmb, phba->mbox_mem_pool);
6061
6062 return;
6063 }
6064
6065 static int
lpfc_filter_by_rpi(struct lpfc_nodelist * ndlp,void * param)6066 lpfc_filter_by_rpi(struct lpfc_nodelist *ndlp, void *param)
6067 {
6068 uint16_t *rpi = param;
6069
6070 /* check for active node */
6071 if (!NLP_CHK_NODE_ACT(ndlp))
6072 return 0;
6073
6074 return ndlp->nlp_rpi == *rpi;
6075 }
6076
6077 static int
lpfc_filter_by_wwpn(struct lpfc_nodelist * ndlp,void * param)6078 lpfc_filter_by_wwpn(struct lpfc_nodelist *ndlp, void *param)
6079 {
6080 return memcmp(&ndlp->nlp_portname, param,
6081 sizeof(ndlp->nlp_portname)) == 0;
6082 }
6083
6084 static struct lpfc_nodelist *
__lpfc_find_node(struct lpfc_vport * vport,node_filter filter,void * param)6085 __lpfc_find_node(struct lpfc_vport *vport, node_filter filter, void *param)
6086 {
6087 struct lpfc_nodelist *ndlp;
6088
6089 list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
6090 if (filter(ndlp, param)) {
6091 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
6092 "3185 FIND node filter %ps DID "
6093 "ndlp x%px did x%x flg x%x st x%x "
6094 "xri x%x type x%x rpi x%x\n",
6095 filter, ndlp, ndlp->nlp_DID,
6096 ndlp->nlp_flag, ndlp->nlp_state,
6097 ndlp->nlp_xri, ndlp->nlp_type,
6098 ndlp->nlp_rpi);
6099 return ndlp;
6100 }
6101 }
6102 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
6103 "3186 FIND node filter %ps NOT FOUND.\n", filter);
6104 return NULL;
6105 }
6106
6107 /*
6108 * This routine looks up the ndlp lists for the given RPI. If rpi found it
6109 * returns the node list element pointer else return NULL.
6110 */
6111 struct lpfc_nodelist *
__lpfc_findnode_rpi(struct lpfc_vport * vport,uint16_t rpi)6112 __lpfc_findnode_rpi(struct lpfc_vport *vport, uint16_t rpi)
6113 {
6114 return __lpfc_find_node(vport, lpfc_filter_by_rpi, &rpi);
6115 }
6116
6117 /*
6118 * This routine looks up the ndlp lists for the given WWPN. If WWPN found it
6119 * returns the node element list pointer else return NULL.
6120 */
6121 struct lpfc_nodelist *
lpfc_findnode_wwpn(struct lpfc_vport * vport,struct lpfc_name * wwpn)6122 lpfc_findnode_wwpn(struct lpfc_vport *vport, struct lpfc_name *wwpn)
6123 {
6124 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
6125 struct lpfc_nodelist *ndlp;
6126
6127 spin_lock_irq(shost->host_lock);
6128 ndlp = __lpfc_find_node(vport, lpfc_filter_by_wwpn, wwpn);
6129 spin_unlock_irq(shost->host_lock);
6130 return ndlp;
6131 }
6132
6133 /*
6134 * This routine looks up the ndlp lists for the given RPI. If the rpi
6135 * is found, the routine returns the node element list pointer else
6136 * return NULL.
6137 */
6138 struct lpfc_nodelist *
lpfc_findnode_rpi(struct lpfc_vport * vport,uint16_t rpi)6139 lpfc_findnode_rpi(struct lpfc_vport *vport, uint16_t rpi)
6140 {
6141 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
6142 struct lpfc_nodelist *ndlp;
6143 unsigned long flags;
6144
6145 spin_lock_irqsave(shost->host_lock, flags);
6146 ndlp = __lpfc_findnode_rpi(vport, rpi);
6147 spin_unlock_irqrestore(shost->host_lock, flags);
6148 return ndlp;
6149 }
6150
6151 /**
6152 * lpfc_find_vport_by_vpid - Find a vport on a HBA through vport identifier
6153 * @phba: pointer to lpfc hba data structure.
6154 * @vpi: the physical host virtual N_Port identifier.
6155 *
6156 * This routine finds a vport on a HBA (referred by @phba) through a
6157 * @vpi. The function walks the HBA's vport list and returns the address
6158 * of the vport with the matching @vpi.
6159 *
6160 * Return code
6161 * NULL - No vport with the matching @vpi found
6162 * Otherwise - Address to the vport with the matching @vpi.
6163 **/
6164 struct lpfc_vport *
lpfc_find_vport_by_vpid(struct lpfc_hba * phba,uint16_t vpi)6165 lpfc_find_vport_by_vpid(struct lpfc_hba *phba, uint16_t vpi)
6166 {
6167 struct lpfc_vport *vport;
6168 unsigned long flags;
6169 int i = 0;
6170
6171 /* The physical ports are always vpi 0 - translate is unnecessary. */
6172 if (vpi > 0) {
6173 /*
6174 * Translate the physical vpi to the logical vpi. The
6175 * vport stores the logical vpi.
6176 */
6177 for (i = 0; i < phba->max_vpi; i++) {
6178 if (vpi == phba->vpi_ids[i])
6179 break;
6180 }
6181
6182 if (i >= phba->max_vpi) {
6183 lpfc_printf_log(phba, KERN_ERR, LOG_ELS,
6184 "2936 Could not find Vport mapped "
6185 "to vpi %d\n", vpi);
6186 return NULL;
6187 }
6188 }
6189
6190 spin_lock_irqsave(&phba->port_list_lock, flags);
6191 list_for_each_entry(vport, &phba->port_list, listentry) {
6192 if (vport->vpi == i) {
6193 spin_unlock_irqrestore(&phba->port_list_lock, flags);
6194 return vport;
6195 }
6196 }
6197 spin_unlock_irqrestore(&phba->port_list_lock, flags);
6198 return NULL;
6199 }
6200
6201 struct lpfc_nodelist *
lpfc_nlp_init(struct lpfc_vport * vport,uint32_t did)6202 lpfc_nlp_init(struct lpfc_vport *vport, uint32_t did)
6203 {
6204 struct lpfc_nodelist *ndlp;
6205 int rpi = LPFC_RPI_ALLOC_ERROR;
6206
6207 if (vport->phba->sli_rev == LPFC_SLI_REV4) {
6208 rpi = lpfc_sli4_alloc_rpi(vport->phba);
6209 if (rpi == LPFC_RPI_ALLOC_ERROR)
6210 return NULL;
6211 }
6212
6213 ndlp = mempool_alloc(vport->phba->nlp_mem_pool, GFP_KERNEL);
6214 if (!ndlp) {
6215 if (vport->phba->sli_rev == LPFC_SLI_REV4)
6216 lpfc_sli4_free_rpi(vport->phba, rpi);
6217 return NULL;
6218 }
6219
6220 memset(ndlp, 0, sizeof (struct lpfc_nodelist));
6221
6222 lpfc_initialize_node(vport, ndlp, did);
6223 INIT_LIST_HEAD(&ndlp->nlp_listp);
6224 if (vport->phba->sli_rev == LPFC_SLI_REV4) {
6225 ndlp->nlp_rpi = rpi;
6226 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
6227 "0007 rpi:%x DID:%x flg:%x refcnt:%d "
6228 "map:%x x%px\n", ndlp->nlp_rpi, ndlp->nlp_DID,
6229 ndlp->nlp_flag,
6230 kref_read(&ndlp->kref),
6231 ndlp->nlp_usg_map, ndlp);
6232
6233 ndlp->active_rrqs_xri_bitmap =
6234 mempool_alloc(vport->phba->active_rrq_pool,
6235 GFP_KERNEL);
6236 if (ndlp->active_rrqs_xri_bitmap)
6237 memset(ndlp->active_rrqs_xri_bitmap, 0,
6238 ndlp->phba->cfg_rrq_xri_bitmap_sz);
6239 }
6240
6241
6242
6243 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE,
6244 "node init: did:x%x",
6245 ndlp->nlp_DID, 0, 0);
6246
6247 return ndlp;
6248 }
6249
6250 /* This routine releases all resources associated with a specifc NPort's ndlp
6251 * and mempool_free's the nodelist.
6252 */
6253 static void
lpfc_nlp_release(struct kref * kref)6254 lpfc_nlp_release(struct kref *kref)
6255 {
6256 struct lpfc_hba *phba;
6257 unsigned long flags;
6258 struct lpfc_nodelist *ndlp = container_of(kref, struct lpfc_nodelist,
6259 kref);
6260
6261 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
6262 "node release: did:x%x flg:x%x type:x%x",
6263 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type);
6264
6265 lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_NODE,
6266 "0279 %s: ndlp:x%px did %x "
6267 "usgmap:x%x refcnt:%d rpi:%x\n",
6268 __func__,
6269 (void *)ndlp, ndlp->nlp_DID, ndlp->nlp_usg_map,
6270 kref_read(&ndlp->kref), ndlp->nlp_rpi);
6271
6272 /* remove ndlp from action. */
6273 lpfc_nlp_remove(ndlp->vport, ndlp);
6274
6275 /* clear the ndlp active flag for all release cases */
6276 phba = ndlp->phba;
6277 spin_lock_irqsave(&phba->ndlp_lock, flags);
6278 NLP_CLR_NODE_ACT(ndlp);
6279 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
6280
6281 /* free ndlp memory for final ndlp release */
6282 if (NLP_CHK_FREE_REQ(ndlp)) {
6283 kfree(ndlp->lat_data);
6284 if (phba->sli_rev == LPFC_SLI_REV4)
6285 mempool_free(ndlp->active_rrqs_xri_bitmap,
6286 ndlp->phba->active_rrq_pool);
6287 mempool_free(ndlp, ndlp->phba->nlp_mem_pool);
6288 }
6289 }
6290
6291 /* This routine bumps the reference count for a ndlp structure to ensure
6292 * that one discovery thread won't free a ndlp while another discovery thread
6293 * is using it.
6294 */
6295 struct lpfc_nodelist *
lpfc_nlp_get(struct lpfc_nodelist * ndlp)6296 lpfc_nlp_get(struct lpfc_nodelist *ndlp)
6297 {
6298 struct lpfc_hba *phba;
6299 unsigned long flags;
6300
6301 if (ndlp) {
6302 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
6303 "node get: did:x%x flg:x%x refcnt:x%x",
6304 ndlp->nlp_DID, ndlp->nlp_flag,
6305 kref_read(&ndlp->kref));
6306 /* The check of ndlp usage to prevent incrementing the
6307 * ndlp reference count that is in the process of being
6308 * released.
6309 */
6310 phba = ndlp->phba;
6311 spin_lock_irqsave(&phba->ndlp_lock, flags);
6312 if (!NLP_CHK_NODE_ACT(ndlp) || NLP_CHK_FREE_ACK(ndlp)) {
6313 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
6314 lpfc_printf_vlog(ndlp->vport, KERN_WARNING, LOG_NODE,
6315 "0276 %s: ndlp:x%px "
6316 "usgmap:x%x refcnt:%d\n",
6317 __func__, (void *)ndlp, ndlp->nlp_usg_map,
6318 kref_read(&ndlp->kref));
6319 return NULL;
6320 } else
6321 kref_get(&ndlp->kref);
6322 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
6323 }
6324 return ndlp;
6325 }
6326
6327 /* This routine decrements the reference count for a ndlp structure. If the
6328 * count goes to 0, this indicates the the associated nodelist should be
6329 * freed. Returning 1 indicates the ndlp resource has been released; on the
6330 * other hand, returning 0 indicates the ndlp resource has not been released
6331 * yet.
6332 */
6333 int
lpfc_nlp_put(struct lpfc_nodelist * ndlp)6334 lpfc_nlp_put(struct lpfc_nodelist *ndlp)
6335 {
6336 struct lpfc_hba *phba;
6337 unsigned long flags;
6338
6339 if (!ndlp)
6340 return 1;
6341
6342 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
6343 "node put: did:x%x flg:x%x refcnt:x%x",
6344 ndlp->nlp_DID, ndlp->nlp_flag,
6345 kref_read(&ndlp->kref));
6346 phba = ndlp->phba;
6347 spin_lock_irqsave(&phba->ndlp_lock, flags);
6348 /* Check the ndlp memory free acknowledge flag to avoid the
6349 * possible race condition that kref_put got invoked again
6350 * after previous one has done ndlp memory free.
6351 */
6352 if (NLP_CHK_FREE_ACK(ndlp)) {
6353 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
6354 lpfc_printf_vlog(ndlp->vport, KERN_WARNING, LOG_NODE,
6355 "0274 %s: ndlp:x%px "
6356 "usgmap:x%x refcnt:%d\n",
6357 __func__, (void *)ndlp, ndlp->nlp_usg_map,
6358 kref_read(&ndlp->kref));
6359 return 1;
6360 }
6361 /* Check the ndlp inactivate log flag to avoid the possible
6362 * race condition that kref_put got invoked again after ndlp
6363 * is already in inactivating state.
6364 */
6365 if (NLP_CHK_IACT_REQ(ndlp)) {
6366 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
6367 lpfc_printf_vlog(ndlp->vport, KERN_WARNING, LOG_NODE,
6368 "0275 %s: ndlp:x%px "
6369 "usgmap:x%x refcnt:%d\n",
6370 __func__, (void *)ndlp, ndlp->nlp_usg_map,
6371 kref_read(&ndlp->kref));
6372 return 1;
6373 }
6374 /* For last put, mark the ndlp usage flags to make sure no
6375 * other kref_get and kref_put on the same ndlp shall get
6376 * in between the process when the final kref_put has been
6377 * invoked on this ndlp.
6378 */
6379 if (kref_read(&ndlp->kref) == 1) {
6380 /* Indicate ndlp is put to inactive state. */
6381 NLP_SET_IACT_REQ(ndlp);
6382 /* Acknowledge ndlp memory free has been seen. */
6383 if (NLP_CHK_FREE_REQ(ndlp))
6384 NLP_SET_FREE_ACK(ndlp);
6385 }
6386 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
6387 /* Note, the kref_put returns 1 when decrementing a reference
6388 * count that was 1, it invokes the release callback function,
6389 * but it still left the reference count as 1 (not actually
6390 * performs the last decrementation). Otherwise, it actually
6391 * decrements the reference count and returns 0.
6392 */
6393 return kref_put(&ndlp->kref, lpfc_nlp_release);
6394 }
6395
6396 /* This routine free's the specified nodelist if it is not in use
6397 * by any other discovery thread. This routine returns 1 if the
6398 * ndlp has been freed. A return value of 0 indicates the ndlp is
6399 * not yet been released.
6400 */
6401 int
lpfc_nlp_not_used(struct lpfc_nodelist * ndlp)6402 lpfc_nlp_not_used(struct lpfc_nodelist *ndlp)
6403 {
6404 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
6405 "node not used: did:x%x flg:x%x refcnt:x%x",
6406 ndlp->nlp_DID, ndlp->nlp_flag,
6407 kref_read(&ndlp->kref));
6408 if (kref_read(&ndlp->kref) == 1)
6409 if (lpfc_nlp_put(ndlp))
6410 return 1;
6411 return 0;
6412 }
6413
6414 /**
6415 * lpfc_fcf_inuse - Check if FCF can be unregistered.
6416 * @phba: Pointer to hba context object.
6417 *
6418 * This function iterate through all FC nodes associated
6419 * will all vports to check if there is any node with
6420 * fc_rports associated with it. If there is an fc_rport
6421 * associated with the node, then the node is either in
6422 * discovered state or its devloss_timer is pending.
6423 */
6424 static int
lpfc_fcf_inuse(struct lpfc_hba * phba)6425 lpfc_fcf_inuse(struct lpfc_hba *phba)
6426 {
6427 struct lpfc_vport **vports;
6428 int i, ret = 0;
6429 struct lpfc_nodelist *ndlp;
6430 struct Scsi_Host *shost;
6431
6432 vports = lpfc_create_vport_work_array(phba);
6433
6434 /* If driver cannot allocate memory, indicate fcf is in use */
6435 if (!vports)
6436 return 1;
6437
6438 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
6439 shost = lpfc_shost_from_vport(vports[i]);
6440 spin_lock_irq(shost->host_lock);
6441 /*
6442 * IF the CVL_RCVD bit is not set then we have sent the
6443 * flogi.
6444 * If dev_loss fires while we are waiting we do not want to
6445 * unreg the fcf.
6446 */
6447 if (!(vports[i]->fc_flag & FC_VPORT_CVL_RCVD)) {
6448 spin_unlock_irq(shost->host_lock);
6449 ret = 1;
6450 goto out;
6451 }
6452 list_for_each_entry(ndlp, &vports[i]->fc_nodes, nlp_listp) {
6453 if (NLP_CHK_NODE_ACT(ndlp) && ndlp->rport &&
6454 (ndlp->rport->roles & FC_RPORT_ROLE_FCP_TARGET)) {
6455 ret = 1;
6456 spin_unlock_irq(shost->host_lock);
6457 goto out;
6458 } else if (ndlp->nlp_flag & NLP_RPI_REGISTERED) {
6459 ret = 1;
6460 lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
6461 "2624 RPI %x DID %x flag %x "
6462 "still logged in\n",
6463 ndlp->nlp_rpi, ndlp->nlp_DID,
6464 ndlp->nlp_flag);
6465 }
6466 }
6467 spin_unlock_irq(shost->host_lock);
6468 }
6469 out:
6470 lpfc_destroy_vport_work_array(phba, vports);
6471 return ret;
6472 }
6473
6474 /**
6475 * lpfc_unregister_vfi_cmpl - Completion handler for unreg vfi.
6476 * @phba: Pointer to hba context object.
6477 * @mboxq: Pointer to mailbox object.
6478 *
6479 * This function frees memory associated with the mailbox command.
6480 */
6481 void
lpfc_unregister_vfi_cmpl(struct lpfc_hba * phba,LPFC_MBOXQ_t * mboxq)6482 lpfc_unregister_vfi_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
6483 {
6484 struct lpfc_vport *vport = mboxq->vport;
6485 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
6486
6487 if (mboxq->u.mb.mbxStatus) {
6488 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY|LOG_MBOX,
6489 "2555 UNREG_VFI mbxStatus error x%x "
6490 "HBA state x%x\n",
6491 mboxq->u.mb.mbxStatus, vport->port_state);
6492 }
6493 spin_lock_irq(shost->host_lock);
6494 phba->pport->fc_flag &= ~FC_VFI_REGISTERED;
6495 spin_unlock_irq(shost->host_lock);
6496 mempool_free(mboxq, phba->mbox_mem_pool);
6497 return;
6498 }
6499
6500 /**
6501 * lpfc_unregister_fcfi_cmpl - Completion handler for unreg fcfi.
6502 * @phba: Pointer to hba context object.
6503 * @mboxq: Pointer to mailbox object.
6504 *
6505 * This function frees memory associated with the mailbox command.
6506 */
6507 static void
lpfc_unregister_fcfi_cmpl(struct lpfc_hba * phba,LPFC_MBOXQ_t * mboxq)6508 lpfc_unregister_fcfi_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
6509 {
6510 struct lpfc_vport *vport = mboxq->vport;
6511
6512 if (mboxq->u.mb.mbxStatus) {
6513 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY|LOG_MBOX,
6514 "2550 UNREG_FCFI mbxStatus error x%x "
6515 "HBA state x%x\n",
6516 mboxq->u.mb.mbxStatus, vport->port_state);
6517 }
6518 mempool_free(mboxq, phba->mbox_mem_pool);
6519 return;
6520 }
6521
6522 /**
6523 * lpfc_unregister_fcf_prep - Unregister fcf record preparation
6524 * @phba: Pointer to hba context object.
6525 *
6526 * This function prepare the HBA for unregistering the currently registered
6527 * FCF from the HBA. It performs unregistering, in order, RPIs, VPIs, and
6528 * VFIs.
6529 */
6530 int
lpfc_unregister_fcf_prep(struct lpfc_hba * phba)6531 lpfc_unregister_fcf_prep(struct lpfc_hba *phba)
6532 {
6533 struct lpfc_vport **vports;
6534 struct lpfc_nodelist *ndlp;
6535 struct Scsi_Host *shost;
6536 int i = 0, rc;
6537
6538 /* Unregister RPIs */
6539 if (lpfc_fcf_inuse(phba))
6540 lpfc_unreg_hba_rpis(phba);
6541
6542 /* At this point, all discovery is aborted */
6543 phba->pport->port_state = LPFC_VPORT_UNKNOWN;
6544
6545 /* Unregister VPIs */
6546 vports = lpfc_create_vport_work_array(phba);
6547 if (vports && (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED))
6548 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
6549 /* Stop FLOGI/FDISC retries */
6550 ndlp = lpfc_findnode_did(vports[i], Fabric_DID);
6551 if (ndlp)
6552 lpfc_cancel_retry_delay_tmo(vports[i], ndlp);
6553 lpfc_cleanup_pending_mbox(vports[i]);
6554 if (phba->sli_rev == LPFC_SLI_REV4)
6555 lpfc_sli4_unreg_all_rpis(vports[i]);
6556 lpfc_mbx_unreg_vpi(vports[i]);
6557 shost = lpfc_shost_from_vport(vports[i]);
6558 spin_lock_irq(shost->host_lock);
6559 vports[i]->fc_flag |= FC_VPORT_NEEDS_INIT_VPI;
6560 vports[i]->vpi_state &= ~LPFC_VPI_REGISTERED;
6561 spin_unlock_irq(shost->host_lock);
6562 }
6563 lpfc_destroy_vport_work_array(phba, vports);
6564 if (i == 0 && (!(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED))) {
6565 ndlp = lpfc_findnode_did(phba->pport, Fabric_DID);
6566 if (ndlp)
6567 lpfc_cancel_retry_delay_tmo(phba->pport, ndlp);
6568 lpfc_cleanup_pending_mbox(phba->pport);
6569 if (phba->sli_rev == LPFC_SLI_REV4)
6570 lpfc_sli4_unreg_all_rpis(phba->pport);
6571 lpfc_mbx_unreg_vpi(phba->pport);
6572 shost = lpfc_shost_from_vport(phba->pport);
6573 spin_lock_irq(shost->host_lock);
6574 phba->pport->fc_flag |= FC_VPORT_NEEDS_INIT_VPI;
6575 phba->pport->vpi_state &= ~LPFC_VPI_REGISTERED;
6576 spin_unlock_irq(shost->host_lock);
6577 }
6578
6579 /* Cleanup any outstanding ELS commands */
6580 lpfc_els_flush_all_cmd(phba);
6581
6582 /* Unregister the physical port VFI */
6583 rc = lpfc_issue_unreg_vfi(phba->pport);
6584 return rc;
6585 }
6586
6587 /**
6588 * lpfc_sli4_unregister_fcf - Unregister currently registered FCF record
6589 * @phba: Pointer to hba context object.
6590 *
6591 * This function issues synchronous unregister FCF mailbox command to HBA to
6592 * unregister the currently registered FCF record. The driver does not reset
6593 * the driver FCF usage state flags.
6594 *
6595 * Return 0 if successfully issued, none-zero otherwise.
6596 */
6597 int
lpfc_sli4_unregister_fcf(struct lpfc_hba * phba)6598 lpfc_sli4_unregister_fcf(struct lpfc_hba *phba)
6599 {
6600 LPFC_MBOXQ_t *mbox;
6601 int rc;
6602
6603 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
6604 if (!mbox) {
6605 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY|LOG_MBOX,
6606 "2551 UNREG_FCFI mbox allocation failed"
6607 "HBA state x%x\n", phba->pport->port_state);
6608 return -ENOMEM;
6609 }
6610 lpfc_unreg_fcfi(mbox, phba->fcf.fcfi);
6611 mbox->vport = phba->pport;
6612 mbox->mbox_cmpl = lpfc_unregister_fcfi_cmpl;
6613 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
6614
6615 if (rc == MBX_NOT_FINISHED) {
6616 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
6617 "2552 Unregister FCFI command failed rc x%x "
6618 "HBA state x%x\n",
6619 rc, phba->pport->port_state);
6620 return -EINVAL;
6621 }
6622 return 0;
6623 }
6624
6625 /**
6626 * lpfc_unregister_fcf_rescan - Unregister currently registered fcf and rescan
6627 * @phba: Pointer to hba context object.
6628 *
6629 * This function unregisters the currently reigstered FCF. This function
6630 * also tries to find another FCF for discovery by rescan the HBA FCF table.
6631 */
6632 void
lpfc_unregister_fcf_rescan(struct lpfc_hba * phba)6633 lpfc_unregister_fcf_rescan(struct lpfc_hba *phba)
6634 {
6635 int rc;
6636
6637 /* Preparation for unregistering fcf */
6638 rc = lpfc_unregister_fcf_prep(phba);
6639 if (rc) {
6640 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY,
6641 "2748 Failed to prepare for unregistering "
6642 "HBA's FCF record: rc=%d\n", rc);
6643 return;
6644 }
6645
6646 /* Now, unregister FCF record and reset HBA FCF state */
6647 rc = lpfc_sli4_unregister_fcf(phba);
6648 if (rc)
6649 return;
6650 /* Reset HBA FCF states after successful unregister FCF */
6651 phba->fcf.fcf_flag = 0;
6652 phba->fcf.current_rec.flag = 0;
6653
6654 /*
6655 * If driver is not unloading, check if there is any other
6656 * FCF record that can be used for discovery.
6657 */
6658 if ((phba->pport->load_flag & FC_UNLOADING) ||
6659 (phba->link_state < LPFC_LINK_UP))
6660 return;
6661
6662 /* This is considered as the initial FCF discovery scan */
6663 spin_lock_irq(&phba->hbalock);
6664 phba->fcf.fcf_flag |= FCF_INIT_DISC;
6665 spin_unlock_irq(&phba->hbalock);
6666
6667 /* Reset FCF roundrobin bmask for new discovery */
6668 lpfc_sli4_clear_fcf_rr_bmask(phba);
6669
6670 rc = lpfc_sli4_fcf_scan_read_fcf_rec(phba, LPFC_FCOE_FCF_GET_FIRST);
6671
6672 if (rc) {
6673 spin_lock_irq(&phba->hbalock);
6674 phba->fcf.fcf_flag &= ~FCF_INIT_DISC;
6675 spin_unlock_irq(&phba->hbalock);
6676 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY|LOG_MBOX,
6677 "2553 lpfc_unregister_unused_fcf failed "
6678 "to read FCF record HBA state x%x\n",
6679 phba->pport->port_state);
6680 }
6681 }
6682
6683 /**
6684 * lpfc_unregister_fcf - Unregister the currently registered fcf record
6685 * @phba: Pointer to hba context object.
6686 *
6687 * This function just unregisters the currently reigstered FCF. It does not
6688 * try to find another FCF for discovery.
6689 */
6690 void
lpfc_unregister_fcf(struct lpfc_hba * phba)6691 lpfc_unregister_fcf(struct lpfc_hba *phba)
6692 {
6693 int rc;
6694
6695 /* Preparation for unregistering fcf */
6696 rc = lpfc_unregister_fcf_prep(phba);
6697 if (rc) {
6698 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY,
6699 "2749 Failed to prepare for unregistering "
6700 "HBA's FCF record: rc=%d\n", rc);
6701 return;
6702 }
6703
6704 /* Now, unregister FCF record and reset HBA FCF state */
6705 rc = lpfc_sli4_unregister_fcf(phba);
6706 if (rc)
6707 return;
6708 /* Set proper HBA FCF states after successful unregister FCF */
6709 spin_lock_irq(&phba->hbalock);
6710 phba->fcf.fcf_flag &= ~FCF_REGISTERED;
6711 spin_unlock_irq(&phba->hbalock);
6712 }
6713
6714 /**
6715 * lpfc_unregister_unused_fcf - Unregister FCF if all devices are disconnected.
6716 * @phba: Pointer to hba context object.
6717 *
6718 * This function check if there are any connected remote port for the FCF and
6719 * if all the devices are disconnected, this function unregister FCFI.
6720 * This function also tries to use another FCF for discovery.
6721 */
6722 void
lpfc_unregister_unused_fcf(struct lpfc_hba * phba)6723 lpfc_unregister_unused_fcf(struct lpfc_hba *phba)
6724 {
6725 /*
6726 * If HBA is not running in FIP mode, if HBA does not support
6727 * FCoE, if FCF discovery is ongoing, or if FCF has not been
6728 * registered, do nothing.
6729 */
6730 spin_lock_irq(&phba->hbalock);
6731 if (!(phba->hba_flag & HBA_FCOE_MODE) ||
6732 !(phba->fcf.fcf_flag & FCF_REGISTERED) ||
6733 !(phba->hba_flag & HBA_FIP_SUPPORT) ||
6734 (phba->fcf.fcf_flag & FCF_DISCOVERY) ||
6735 (phba->pport->port_state == LPFC_FLOGI)) {
6736 spin_unlock_irq(&phba->hbalock);
6737 return;
6738 }
6739 spin_unlock_irq(&phba->hbalock);
6740
6741 if (lpfc_fcf_inuse(phba))
6742 return;
6743
6744 lpfc_unregister_fcf_rescan(phba);
6745 }
6746
6747 /**
6748 * lpfc_read_fcf_conn_tbl - Create driver FCF connection table.
6749 * @phba: Pointer to hba context object.
6750 * @buff: Buffer containing the FCF connection table as in the config
6751 * region.
6752 * This function create driver data structure for the FCF connection
6753 * record table read from config region 23.
6754 */
6755 static void
lpfc_read_fcf_conn_tbl(struct lpfc_hba * phba,uint8_t * buff)6756 lpfc_read_fcf_conn_tbl(struct lpfc_hba *phba,
6757 uint8_t *buff)
6758 {
6759 struct lpfc_fcf_conn_entry *conn_entry, *next_conn_entry;
6760 struct lpfc_fcf_conn_hdr *conn_hdr;
6761 struct lpfc_fcf_conn_rec *conn_rec;
6762 uint32_t record_count;
6763 int i;
6764
6765 /* Free the current connect table */
6766 list_for_each_entry_safe(conn_entry, next_conn_entry,
6767 &phba->fcf_conn_rec_list, list) {
6768 list_del_init(&conn_entry->list);
6769 kfree(conn_entry);
6770 }
6771
6772 conn_hdr = (struct lpfc_fcf_conn_hdr *) buff;
6773 record_count = conn_hdr->length * sizeof(uint32_t)/
6774 sizeof(struct lpfc_fcf_conn_rec);
6775
6776 conn_rec = (struct lpfc_fcf_conn_rec *)
6777 (buff + sizeof(struct lpfc_fcf_conn_hdr));
6778
6779 for (i = 0; i < record_count; i++) {
6780 if (!(conn_rec[i].flags & FCFCNCT_VALID))
6781 continue;
6782 conn_entry = kzalloc(sizeof(struct lpfc_fcf_conn_entry),
6783 GFP_KERNEL);
6784 if (!conn_entry) {
6785 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6786 "2566 Failed to allocate connection"
6787 " table entry\n");
6788 return;
6789 }
6790
6791 memcpy(&conn_entry->conn_rec, &conn_rec[i],
6792 sizeof(struct lpfc_fcf_conn_rec));
6793 list_add_tail(&conn_entry->list,
6794 &phba->fcf_conn_rec_list);
6795 }
6796
6797 if (!list_empty(&phba->fcf_conn_rec_list)) {
6798 i = 0;
6799 list_for_each_entry(conn_entry, &phba->fcf_conn_rec_list,
6800 list) {
6801 conn_rec = &conn_entry->conn_rec;
6802 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
6803 "3345 FCF connection list rec[%02d]: "
6804 "flags:x%04x, vtag:x%04x, "
6805 "fabric_name:x%02x:%02x:%02x:%02x:"
6806 "%02x:%02x:%02x:%02x, "
6807 "switch_name:x%02x:%02x:%02x:%02x:"
6808 "%02x:%02x:%02x:%02x\n", i++,
6809 conn_rec->flags, conn_rec->vlan_tag,
6810 conn_rec->fabric_name[0],
6811 conn_rec->fabric_name[1],
6812 conn_rec->fabric_name[2],
6813 conn_rec->fabric_name[3],
6814 conn_rec->fabric_name[4],
6815 conn_rec->fabric_name[5],
6816 conn_rec->fabric_name[6],
6817 conn_rec->fabric_name[7],
6818 conn_rec->switch_name[0],
6819 conn_rec->switch_name[1],
6820 conn_rec->switch_name[2],
6821 conn_rec->switch_name[3],
6822 conn_rec->switch_name[4],
6823 conn_rec->switch_name[5],
6824 conn_rec->switch_name[6],
6825 conn_rec->switch_name[7]);
6826 }
6827 }
6828 }
6829
6830 /**
6831 * lpfc_read_fcoe_param - Read FCoe parameters from conf region..
6832 * @phba: Pointer to hba context object.
6833 * @buff: Buffer containing the FCoE parameter data structure.
6834 *
6835 * This function update driver data structure with config
6836 * parameters read from config region 23.
6837 */
6838 static void
lpfc_read_fcoe_param(struct lpfc_hba * phba,uint8_t * buff)6839 lpfc_read_fcoe_param(struct lpfc_hba *phba,
6840 uint8_t *buff)
6841 {
6842 struct lpfc_fip_param_hdr *fcoe_param_hdr;
6843 struct lpfc_fcoe_params *fcoe_param;
6844
6845 fcoe_param_hdr = (struct lpfc_fip_param_hdr *)
6846 buff;
6847 fcoe_param = (struct lpfc_fcoe_params *)
6848 (buff + sizeof(struct lpfc_fip_param_hdr));
6849
6850 if ((fcoe_param_hdr->parm_version != FIPP_VERSION) ||
6851 (fcoe_param_hdr->length != FCOE_PARAM_LENGTH))
6852 return;
6853
6854 if (fcoe_param_hdr->parm_flags & FIPP_VLAN_VALID) {
6855 phba->valid_vlan = 1;
6856 phba->vlan_id = le16_to_cpu(fcoe_param->vlan_tag) &
6857 0xFFF;
6858 }
6859
6860 phba->fc_map[0] = fcoe_param->fc_map[0];
6861 phba->fc_map[1] = fcoe_param->fc_map[1];
6862 phba->fc_map[2] = fcoe_param->fc_map[2];
6863 return;
6864 }
6865
6866 /**
6867 * lpfc_get_rec_conf23 - Get a record type in config region data.
6868 * @buff: Buffer containing config region 23 data.
6869 * @size: Size of the data buffer.
6870 * @rec_type: Record type to be searched.
6871 *
6872 * This function searches config region data to find the beginning
6873 * of the record specified by record_type. If record found, this
6874 * function return pointer to the record else return NULL.
6875 */
6876 static uint8_t *
lpfc_get_rec_conf23(uint8_t * buff,uint32_t size,uint8_t rec_type)6877 lpfc_get_rec_conf23(uint8_t *buff, uint32_t size, uint8_t rec_type)
6878 {
6879 uint32_t offset = 0, rec_length;
6880
6881 if ((buff[0] == LPFC_REGION23_LAST_REC) ||
6882 (size < sizeof(uint32_t)))
6883 return NULL;
6884
6885 rec_length = buff[offset + 1];
6886
6887 /*
6888 * One TLV record has one word header and number of data words
6889 * specified in the rec_length field of the record header.
6890 */
6891 while ((offset + rec_length * sizeof(uint32_t) + sizeof(uint32_t))
6892 <= size) {
6893 if (buff[offset] == rec_type)
6894 return &buff[offset];
6895
6896 if (buff[offset] == LPFC_REGION23_LAST_REC)
6897 return NULL;
6898
6899 offset += rec_length * sizeof(uint32_t) + sizeof(uint32_t);
6900 rec_length = buff[offset + 1];
6901 }
6902 return NULL;
6903 }
6904
6905 /**
6906 * lpfc_parse_fcoe_conf - Parse FCoE config data read from config region 23.
6907 * @phba: Pointer to lpfc_hba data structure.
6908 * @buff: Buffer containing config region 23 data.
6909 * @size: Size of the data buffer.
6910 *
6911 * This function parses the FCoE config parameters in config region 23 and
6912 * populate driver data structure with the parameters.
6913 */
6914 void
lpfc_parse_fcoe_conf(struct lpfc_hba * phba,uint8_t * buff,uint32_t size)6915 lpfc_parse_fcoe_conf(struct lpfc_hba *phba,
6916 uint8_t *buff,
6917 uint32_t size)
6918 {
6919 uint32_t offset = 0;
6920 uint8_t *rec_ptr;
6921
6922 /*
6923 * If data size is less than 2 words signature and version cannot be
6924 * verified.
6925 */
6926 if (size < 2*sizeof(uint32_t))
6927 return;
6928
6929 /* Check the region signature first */
6930 if (memcmp(buff, LPFC_REGION23_SIGNATURE, 4)) {
6931 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6932 "2567 Config region 23 has bad signature\n");
6933 return;
6934 }
6935
6936 offset += 4;
6937
6938 /* Check the data structure version */
6939 if (buff[offset] != LPFC_REGION23_VERSION) {
6940 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6941 "2568 Config region 23 has bad version\n");
6942 return;
6943 }
6944 offset += 4;
6945
6946 /* Read FCoE param record */
6947 rec_ptr = lpfc_get_rec_conf23(&buff[offset],
6948 size - offset, FCOE_PARAM_TYPE);
6949 if (rec_ptr)
6950 lpfc_read_fcoe_param(phba, rec_ptr);
6951
6952 /* Read FCF connection table */
6953 rec_ptr = lpfc_get_rec_conf23(&buff[offset],
6954 size - offset, FCOE_CONN_TBL_TYPE);
6955 if (rec_ptr)
6956 lpfc_read_fcf_conn_tbl(phba, rec_ptr);
6957
6958 }
6959