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[SCSI] lpfc 8.2.4 : Enhance debugfs use
[net-next-2.6.git] / drivers / scsi / lpfc / lpfc_hbadisc.c
CommitLineData
dea3101e
JB		 1/*******************************************************************
2 * This file is part of the Emulex Linux Device Driver for *
c44ce173 3 * Fibre Channel Host Bus Adapters. *
9413afff 4 * Copyright (C) 2004-2007 Emulex. All rights reserved. *
c44ce173 5 * EMULEX and SLI are trademarks of Emulex. *
dea3101e 6 * www.emulex.com *
c44ce173 7 * Portions Copyright (C) 2004-2005 Christoph Hellwig *
dea3101e
JB		 8 * *
9 * This program is free software; you can redistribute it and/or *
c44ce173
JSEC		 10 * modify it under the terms of version 2 of the GNU General *
11 * Public License as published by the Free Software Foundation. *
12 * This program is distributed in the hope that it will be useful. *
13 * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND *
14 * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, *
15 * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE *
16 * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD *
17 * TO BE LEGALLY INVALID. See the GNU General Public License for *
18 * more details, a copy of which can be found in the file COPYING *
19 * included with this package. *
dea3101e
JB		 20 *******************************************************************/
21
dea3101e
JB		 22#include <linux/blkdev.h>
23#include <linux/pci.h>
24#include <linux/kthread.h>
25#include <linux/interrupt.h>
26
91886523 27#include <scsi/scsi.h>
dea3101e
JB		 28#include <scsi/scsi_device.h>
29#include <scsi/scsi_host.h>
30#include <scsi/scsi_transport_fc.h>
31
32#include "lpfc_hw.h"
33#include "lpfc_disc.h"
34#include "lpfc_sli.h"
35#include "lpfc_scsi.h"
36#include "lpfc.h"
37#include "lpfc_logmsg.h"
38#include "lpfc_crtn.h"
92d7f7b0 39#include "lpfc_vport.h"
858c9f6c 40#include "lpfc_debugfs.h"
dea3101e
JB		 41
42/* AlpaArray for assignment of scsid for scan-down and bind_method */
43static uint8_t lpfcAlpaArray[] = {
44 0xEF, 0xE8, 0xE4, 0xE2, 0xE1, 0xE0, 0xDC, 0xDA, 0xD9, 0xD6,
45 0xD5, 0xD4, 0xD3, 0xD2, 0xD1, 0xCE, 0xCD, 0xCC, 0xCB, 0xCA,
46 0xC9, 0xC7, 0xC6, 0xC5, 0xC3, 0xBC, 0xBA, 0xB9, 0xB6, 0xB5,
47 0xB4, 0xB3, 0xB2, 0xB1, 0xAE, 0xAD, 0xAC, 0xAB, 0xAA, 0xA9,
48 0xA7, 0xA6, 0xA5, 0xA3, 0x9F, 0x9E, 0x9D, 0x9B, 0x98, 0x97,
49 0x90, 0x8F, 0x88, 0x84, 0x82, 0x81, 0x80, 0x7C, 0x7A, 0x79,
50 0x76, 0x75, 0x74, 0x73, 0x72, 0x71, 0x6E, 0x6D, 0x6C, 0x6B,
51 0x6A, 0x69, 0x67, 0x66, 0x65, 0x63, 0x5C, 0x5A, 0x59, 0x56,
52 0x55, 0x54, 0x53, 0x52, 0x51, 0x4E, 0x4D, 0x4C, 0x4B, 0x4A,
53 0x49, 0x47, 0x46, 0x45, 0x43, 0x3C, 0x3A, 0x39, 0x36, 0x35,
54 0x34, 0x33, 0x32, 0x31, 0x2E, 0x2D, 0x2C, 0x2B, 0x2A, 0x29,
55 0x27, 0x26, 0x25, 0x23, 0x1F, 0x1E, 0x1D, 0x1B, 0x18, 0x17,
56 0x10, 0x0F, 0x08, 0x04, 0x02, 0x01
57};
58
2e0fef85 59static void lpfc_disc_timeout_handler(struct lpfc_vport *);
a6ababd2 60static void lpfc_disc_flush_list(struct lpfc_vport *vport);
dea3101e 61
c01f3208
JS		 62void
63lpfc_terminate_rport_io(struct fc_rport *rport)
dea3101e 64{
c01f3208
JS		 65 struct lpfc_rport_data *rdata;
66 struct lpfc_nodelist * ndlp;
67 struct lpfc_hba *phba;
dea3101e 68
c01f3208
JS		 69 rdata = rport->dd_data;
70 ndlp = rdata->pnode;
71
72 if (!ndlp) {
73 if (rport->roles & FC_RPORT_ROLE_FCP_TARGET)
74 printk(KERN_ERR "Cannot find remote node"
75 " to terminate I/O Data x%x\n",
76 rport->port_id);
dea3101e
JB		 77 return;
78 }
79
2e0fef85 80 phba = ndlp->vport->phba;
c01f3208 81
858c9f6c
JS		 82 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_RPORT,
83 "rport terminate: sid:x%x did:x%x flg:x%x",
84 ndlp->nlp_sid, ndlp->nlp_DID, ndlp->nlp_flag);
85
c01f3208 86 if (ndlp->nlp_sid != NLP_NO_SID) {
51ef4c26
JS		 87 lpfc_sli_abort_iocb(ndlp->vport,
88 &phba->sli.ring[phba->sli.fcp_ring],
89 ndlp->nlp_sid, 0, LPFC_CTX_TGT);
c01f3208 90 }
c01f3208 91
51ef4c26
JS		 92 /*
93 * A device is normally blocked for rediscovery and unblocked when
94 * devloss timeout happens. In case a vport is removed or driver
95 * unloaded before devloss timeout happens, we need to unblock here.
96 */
97 scsi_target_unblock(&rport->dev);
c01f3208
JS		 98 return;
99}
100
101/*
102 * This function will be called when dev_loss_tmo fire.
103 */
104void
105lpfc_dev_loss_tmo_callbk(struct fc_rport *rport)
106{
107 struct lpfc_rport_data *rdata;
108 struct lpfc_nodelist * ndlp;
2e0fef85 109 struct lpfc_vport *vport;
858c9f6c 110 struct lpfc_hba *phba;
858c9f6c 111 struct lpfc_work_evt *evtp;
a8adb832
JS		 112 int put_node;
113 int put_rport;
c01f3208
JS		 114
115 rdata = rport->dd_data;
116 ndlp = rdata->pnode;
09372820 117 if (!ndlp)
c01f3208 118 return;
c01f3208 119
858c9f6c
JS		 120 vport = ndlp->vport;
121 phba = vport->phba;
122
123 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
124 "rport devlosscb: sid:x%x did:x%x flg:x%x",
125 ndlp->nlp_sid, ndlp->nlp_DID, ndlp->nlp_flag);
126
a8adb832
JS		 127 /* Don't defer this if we are in the process of deleting the vport
128 * or unloading the driver. The unload will cleanup the node
129 * appropriately we just need to cleanup the ndlp rport info here.
130 */
131 if (vport->load_flag & FC_UNLOADING) {
132 put_node = rdata->pnode != NULL;
133 put_rport = ndlp->rport != NULL;
134 rdata->pnode = NULL;
135 ndlp->rport = NULL;
136 if (put_node)
137 lpfc_nlp_put(ndlp);
138 if (put_rport)
139 put_device(&rport->dev);
140 return;
141 }
142
143 if (ndlp->nlp_state == NLP_STE_MAPPED_NODE)
144 return;
145
858c9f6c
JS		 146 evtp = &ndlp->dev_loss_evt;
147
148 if (!list_empty(&evtp->evt_listp))
149 return;
150
151 spin_lock_irq(&phba->hbalock);
152 evtp->evt_arg1 = ndlp;
858c9f6c
JS		 153 evtp->evt = LPFC_EVT_DEV_LOSS;
154 list_add_tail(&evtp->evt_listp, &phba->work_list);
155 if (phba->work_wait)
156 wake_up(phba->work_wait);
157
158 spin_unlock_irq(&phba->hbalock);
159
858c9f6c
JS		 160 return;
161}
162
163/*
164 * This function is called from the worker thread when dev_loss_tmo
165 * expire.
166 */
a6ababd2 167static void
858c9f6c
JS		 168lpfc_dev_loss_tmo_handler(struct lpfc_nodelist *ndlp)
169{
170 struct lpfc_rport_data *rdata;
171 struct fc_rport *rport;
172 struct lpfc_vport *vport;
173 struct lpfc_hba *phba;
174 uint8_t *name;
87af33fe
JS		 175 int put_node;
176 int put_rport;
858c9f6c
JS		 177 int warn_on = 0;
178
179 rport = ndlp->rport;
180
181 if (!rport)
182 return;
183
184 rdata = rport->dd_data;
185 name = (uint8_t *) &ndlp->nlp_portname;
186 vport = ndlp->vport;
187 phba = vport->phba;
188
189 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
190 "rport devlosstmo:did:x%x type:x%x id:x%x",
191 ndlp->nlp_DID, ndlp->nlp_type, rport->scsi_target_id);
192
a8adb832
JS		 193 /* Don't defer this if we are in the process of deleting the vport
194 * or unloading the driver. The unload will cleanup the node
195 * appropriately we just need to cleanup the ndlp rport info here.
196 */
197 if (vport->load_flag & FC_UNLOADING) {
09372820
JS		 198 if (ndlp->nlp_sid != NLP_NO_SID) {
199 /* flush the target */
200 lpfc_sli_abort_iocb(vport,
201 &phba->sli.ring[phba->sli.fcp_ring],
202 ndlp->nlp_sid, 0, LPFC_CTX_TGT);
203 }
a8adb832
JS		 204 put_node = rdata->pnode != NULL;
205 put_rport = ndlp->rport != NULL;
206 rdata->pnode = NULL;
207 ndlp->rport = NULL;
208 if (put_node)
209 lpfc_nlp_put(ndlp);
210 if (put_rport)
211 put_device(&rport->dev);
212 return;
213 }
214
215 if (ndlp->nlp_state == NLP_STE_MAPPED_NODE)
858c9f6c
JS		 216 return;
217
92d7f7b0
JS		 218 if (ndlp->nlp_type & NLP_FABRIC) {
219 /* We will clean up these Nodes in linkup */
220 put_node = rdata->pnode != NULL;
221 put_rport = ndlp->rport != NULL;
222 rdata->pnode = NULL;
223 ndlp->rport = NULL;
224 if (put_node)
225 lpfc_nlp_put(ndlp);
226 if (put_rport)
227 put_device(&rport->dev);
82085718 228 return;
92d7f7b0 229 }
82085718 230
dea3101e 231 if (ndlp->nlp_sid != NLP_NO_SID) {
6e8215e4 232 warn_on = 1;
dea3101e 233 /* flush the target */
51ef4c26
JS		 234 lpfc_sli_abort_iocb(vport, &phba->sli.ring[phba->sli.fcp_ring],
235 ndlp->nlp_sid, 0, LPFC_CTX_TGT);
dea3101e 236 }
2e0fef85 237 if (vport->load_flag & FC_UNLOADING)
c01f3208
JS		 238 warn_on = 0;
239
6e8215e4 240 if (warn_on) {
e8b62011
JS		 241 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
242 "0203 Devloss timeout on "
243 "WWPN %x:%x:%x:%x:%x:%x:%x:%x "
244 "NPort x%x Data: x%x x%x x%x\n",
245 *name, *(name+1), *(name+2), *(name+3),
246 *(name+4), *(name+5), *(name+6), *(name+7),
247 ndlp->nlp_DID, ndlp->nlp_flag,
248 ndlp->nlp_state, ndlp->nlp_rpi);
6e8215e4 249 } else {
e8b62011
JS		 250 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
251 "0204 Devloss timeout on "
252 "WWPN %x:%x:%x:%x:%x:%x:%x:%x "
253 "NPort x%x Data: x%x x%x x%x\n",
254 *name, *(name+1), *(name+2), *(name+3),
255 *(name+4), *(name+5), *(name+6), *(name+7),
256 ndlp->nlp_DID, ndlp->nlp_flag,
257 ndlp->nlp_state, ndlp->nlp_rpi);
6e8215e4
JSEC		 258 }
259
87af33fe
JS		 260 put_node = rdata->pnode != NULL;
261 put_rport = ndlp->rport != NULL;
262 rdata->pnode = NULL;
263 ndlp->rport = NULL;
264 if (put_node)
265 lpfc_nlp_put(ndlp);
266 if (put_rport)
267 put_device(&rport->dev);
268
2e0fef85 269 if (!(vport->load_flag & FC_UNLOADING) &&
1dcb58e5 270 !(ndlp->nlp_flag & NLP_DELAY_TMO) &&
82085718 271 !(ndlp->nlp_flag & NLP_NPR_2B_DISC) &&
87af33fe 272 (ndlp->nlp_state != NLP_STE_UNMAPPED_NODE)) {
2e0fef85 273 lpfc_disc_state_machine(vport, ndlp, NULL, NLP_EVT_DEVICE_RM);
1dcb58e5 274 }
92d7f7b0 275}
c01f3208 276
92d7f7b0
JS		 277
278void
279lpfc_worker_wake_up(struct lpfc_hba *phba)
280{
281 wake_up(phba->work_wait);
dea3101e
JB		 282 return;
283}
284
285static void
2e0fef85 286lpfc_work_list_done(struct lpfc_hba *phba)
dea3101e
JB		 287{
288 struct lpfc_work_evt *evtp = NULL;
289 struct lpfc_nodelist *ndlp;
290 int free_evt;
291
2e0fef85
JS		 292 spin_lock_irq(&phba->hbalock);
293 while (!list_empty(&phba->work_list)) {
dea3101e
JB		 294 list_remove_head((&phba->work_list), evtp, typeof(*evtp),
295 evt_listp);
2e0fef85 296 spin_unlock_irq(&phba->hbalock);
dea3101e 297 free_evt = 1;
2fe165b6 298 switch (evtp->evt) {
dea3101e 299 case LPFC_EVT_ELS_RETRY:
2e0fef85 300 ndlp = (struct lpfc_nodelist *) (evtp->evt_arg1);
dea3101e 301 lpfc_els_retry_delay_handler(ndlp);
92d7f7b0 302 free_evt = 0; /* evt is part of ndlp */
dea3101e 303 break;
858c9f6c
JS		 304 case LPFC_EVT_DEV_LOSS:
305 ndlp = (struct lpfc_nodelist *)(evtp->evt_arg1);
306 lpfc_nlp_get(ndlp);
307 lpfc_dev_loss_tmo_handler(ndlp);
308 free_evt = 0;
858c9f6c
JS		 309 lpfc_nlp_put(ndlp);
310 break;
dea3101e 311 case LPFC_EVT_ONLINE:
2e0fef85
JS		 312 if (phba->link_state < LPFC_LINK_DOWN)
313 *(int *) (evtp->evt_arg1) = lpfc_online(phba);
41415862 314 else
2e0fef85 315 *(int *) (evtp->evt_arg1) = 0;
dea3101e
JB		 316 complete((struct completion *)(evtp->evt_arg2));
317 break;
46fa311e 318 case LPFC_EVT_OFFLINE_PREP:
2e0fef85 319 if (phba->link_state >= LPFC_LINK_DOWN)
46fa311e
JS		 320 lpfc_offline_prep(phba);
321 *(int *)(evtp->evt_arg1) = 0;
322 complete((struct completion *)(evtp->evt_arg2));
323 break;
324 case LPFC_EVT_OFFLINE:
325 lpfc_offline(phba);
41415862
JW		 326 lpfc_sli_brdrestart(phba);
327 *(int *)(evtp->evt_arg1) =
46fa311e
JS		 328 lpfc_sli_brdready(phba, HS_FFRDY | HS_MBRDY);
329 lpfc_unblock_mgmt_io(phba);
41415862
JW		 330 complete((struct completion *)(evtp->evt_arg2));
331 break;
332 case LPFC_EVT_WARM_START:
46fa311e 333 lpfc_offline(phba);
9290831f 334 lpfc_reset_barrier(phba);
41415862
JW		 335 lpfc_sli_brdreset(phba);
336 lpfc_hba_down_post(phba);
337 *(int *)(evtp->evt_arg1) =
338 lpfc_sli_brdready(phba, HS_MBRDY);
46fa311e 339 lpfc_unblock_mgmt_io(phba);
41415862
JW		 340 complete((struct completion *)(evtp->evt_arg2));
341 break;
342 case LPFC_EVT_KILL:
46fa311e 343 lpfc_offline(phba);
9290831f 344 *(int *)(evtp->evt_arg1)
2e0fef85
JS		 345 = (phba->pport->stopped)
346 ? 0 : lpfc_sli_brdkill(phba);
46fa311e 347 lpfc_unblock_mgmt_io(phba);
dea3101e
JB		 348 complete((struct completion *)(evtp->evt_arg2));
349 break;
350 }
351 if (free_evt)
352 kfree(evtp);
2e0fef85 353 spin_lock_irq(&phba->hbalock);
dea3101e 354 }
2e0fef85 355 spin_unlock_irq(&phba->hbalock);
dea3101e
JB		 356
357}
358
311464ec 359static void
2e0fef85 360lpfc_work_done(struct lpfc_hba *phba)
dea3101e
JB		 361{
362 struct lpfc_sli_ring *pring;
858c9f6c 363 uint32_t ha_copy, status, control, work_port_events;
549e55cd 364 struct lpfc_vport **vports;
51ef4c26 365 struct lpfc_vport *vport;
549e55cd 366 int i;
dea3101e 367
2e0fef85 368 spin_lock_irq(&phba->hbalock);
dea3101e
JB		 369 ha_copy = phba->work_ha;
370 phba->work_ha = 0;
2e0fef85 371 spin_unlock_irq(&phba->hbalock);
dea3101e 372
2fe165b6 373 if (ha_copy & HA_ERATT)
dea3101e
JB		 374 lpfc_handle_eratt(phba);
375
2fe165b6 376 if (ha_copy & HA_MBATT)
dea3101e
JB		 377 lpfc_sli_handle_mb_event(phba);
378
2fe165b6 379 if (ha_copy & HA_LATT)
dea3101e 380 lpfc_handle_latt(phba);
549e55cd
JS		 381 vports = lpfc_create_vport_work_array(phba);
382 if (vports != NULL)
09372820 383 for(i = 0; i <= phba->max_vpi; i++) {
51ef4c26
JS		 384 /*
385 * We could have no vports in array if unloading, so if
386 * this happens then just use the pport
387 */
388 if (vports[i] == NULL && i == 0)
389 vport = phba->pport;
390 else
391 vport = vports[i];
392 if (vport == NULL)
393 break;
394 work_port_events = vport->work_port_events;
549e55cd 395 if (work_port_events & WORKER_DISC_TMO)
51ef4c26 396 lpfc_disc_timeout_handler(vport);
549e55cd 397 if (work_port_events & WORKER_ELS_TMO)
51ef4c26 398 lpfc_els_timeout_handler(vport);
549e55cd
JS		 399 if (work_port_events & WORKER_HB_TMO)
400 lpfc_hb_timeout_handler(phba);
401 if (work_port_events & WORKER_MBOX_TMO)
402 lpfc_mbox_timeout_handler(phba);
403 if (work_port_events & WORKER_FABRIC_BLOCK_TMO)
404 lpfc_unblock_fabric_iocbs(phba);
405 if (work_port_events & WORKER_FDMI_TMO)
51ef4c26 406 lpfc_fdmi_timeout_handler(vport);
549e55cd
JS		 407 if (work_port_events & WORKER_RAMP_DOWN_QUEUE)
408 lpfc_ramp_down_queue_handler(phba);
409 if (work_port_events & WORKER_RAMP_UP_QUEUE)
410 lpfc_ramp_up_queue_handler(phba);
51ef4c26
JS		 411 spin_lock_irq(&vport->work_port_lock);
412 vport->work_port_events &= ~work_port_events;
413 spin_unlock_irq(&vport->work_port_lock);
92d7f7b0 414 }
09372820 415 lpfc_destroy_vport_work_array(phba, vports);
dea3101e 416
858c9f6c
JS		 417 pring = &phba->sli.ring[LPFC_ELS_RING];
418 status = (ha_copy & (HA_RXMASK << (4*LPFC_ELS_RING)));
419 status >>= (4*LPFC_ELS_RING);
420 if ((status & HA_RXMASK)
421 || (pring->flag & LPFC_DEFERRED_RING_EVENT)) {
0b727fea 422 if (pring->flag & LPFC_STOP_IOCB_EVENT) {
858c9f6c
JS		 423 pring->flag |= LPFC_DEFERRED_RING_EVENT;
424 } else {
425 lpfc_sli_handle_slow_ring_event(phba, pring,
426 (status &
427 HA_RXMASK));
428 pring->flag &= ~LPFC_DEFERRED_RING_EVENT;
429 }
430 /*
431 * Turn on Ring interrupts
432 */
433 spin_lock_irq(&phba->hbalock);
434 control = readl(phba->HCregaddr);
435 if (!(control & (HC_R0INT_ENA << LPFC_ELS_RING))) {
a58cbd52
JS		 436 lpfc_debugfs_slow_ring_trc(phba,
437 "WRK Enable ring: cntl:x%x hacopy:x%x",
438 control, ha_copy, 0);
439
858c9f6c 440 control |= (HC_R0INT_ENA << LPFC_ELS_RING);
dea3101e
JB		 441 writel(control, phba->HCregaddr);
442 readl(phba->HCregaddr); /* flush */
dea3101e 443 }
a58cbd52
JS		 444 else {
445 lpfc_debugfs_slow_ring_trc(phba,
446 "WRK Ring ok: cntl:x%x hacopy:x%x",
447 control, ha_copy, 0);
448 }
858c9f6c 449 spin_unlock_irq(&phba->hbalock);
dea3101e 450 }
2e0fef85 451 lpfc_work_list_done(phba);
dea3101e
JB		 452}
453
454static int
2e0fef85
JS		 455check_work_wait_done(struct lpfc_hba *phba)
456{
92d7f7b0 457 struct lpfc_vport *vport;
549e55cd 458 struct lpfc_sli_ring *pring = &phba->sli.ring[LPFC_ELS_RING];
858c9f6c 459 int rc = 0;
ed957684 460
2e0fef85 461 spin_lock_irq(&phba->hbalock);
92d7f7b0
JS		 462 list_for_each_entry(vport, &phba->port_list, listentry) {
463 if (vport->work_port_events) {
464 rc = 1;
549e55cd 465 break;
92d7f7b0
JS		 466 }
467 }
549e55cd
JS		 468 if (rc || phba->work_ha || (!list_empty(&phba->work_list)) ||
469 kthread_should_stop() || pring->flag & LPFC_DEFERRED_RING_EVENT) {
858c9f6c 470 rc = 1;
92d7f7b0 471 phba->work_found++;
549e55cd 472 } else
92d7f7b0 473 phba->work_found = 0;
2e0fef85
JS		 474 spin_unlock_irq(&phba->hbalock);
475 return rc;
dea3101e
JB		 476}
477
92d7f7b0 478
dea3101e
JB		 479int
480lpfc_do_work(void *p)
481{
482 struct lpfc_hba *phba = p;
483 int rc;
7259f0d0 484 DECLARE_WAIT_QUEUE_HEAD_ONSTACK(work_waitq);
dea3101e
JB		 485
486 set_user_nice(current, -20);
487 phba->work_wait = &work_waitq;
92d7f7b0 488 phba->work_found = 0;
dea3101e
JB		 489
490 while (1) {
491
492 rc = wait_event_interruptible(work_waitq,
92d7f7b0
JS		 493 check_work_wait_done(phba));
494
dea3101e
JB		 495 BUG_ON(rc);
496
497 if (kthread_should_stop())
498 break;
499
500 lpfc_work_done(phba);
501
92d7f7b0
JS		 502 /* If there is alot of slow ring work, like during link up
503 * check_work_wait_done() may cause this thread to not give
504 * up the CPU for very long periods of time. This may cause
505 * soft lockups or other problems. To avoid these situations
506 * give up the CPU here after LPFC_MAX_WORKER_ITERATION
507 * consecutive iterations.
508 */
509 if (phba->work_found >= LPFC_MAX_WORKER_ITERATION) {
510 phba->work_found = 0;
511 schedule();
512 }
dea3101e
JB		 513 }
514 phba->work_wait = NULL;
515 return 0;
516}
517
518/*
519 * This is only called to handle FC worker events. Since this a rare
520 * occurance, we allocate a struct lpfc_work_evt structure here instead of
521 * embedding it in the IOCB.
522 */
523int
2e0fef85 524lpfc_workq_post_event(struct lpfc_hba *phba, void *arg1, void *arg2,
dea3101e
JB		 525 uint32_t evt)
526{
527 struct lpfc_work_evt *evtp;
ed957684 528 unsigned long flags;
dea3101e
JB		 529
530 /*
531 * All Mailbox completions and LPFC_ELS_RING rcv ring IOCB events will
532 * be queued to worker thread for processing
533 */
92d7f7b0 534 evtp = kmalloc(sizeof(struct lpfc_work_evt), GFP_ATOMIC);
dea3101e
JB		 535 if (!evtp)
536 return 0;
537
538 evtp->evt_arg1 = arg1;
539 evtp->evt_arg2 = arg2;
540 evtp->evt = evt;
541
ed957684 542 spin_lock_irqsave(&phba->hbalock, flags);
071fbd3d 543 list_add_tail(&evtp->evt_listp, &phba->work_list);
dea3101e 544 if (phba->work_wait)
92d7f7b0 545 lpfc_worker_wake_up(phba);
ed957684 546 spin_unlock_irqrestore(&phba->hbalock, flags);
dea3101e
JB		 547
548 return 1;
549}
550
92d7f7b0
JS		 551void
552lpfc_cleanup_rpis(struct lpfc_vport *vport, int remove)
553{
09372820 554 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
92d7f7b0
JS		 555 struct lpfc_hba *phba = vport->phba;
556 struct lpfc_nodelist *ndlp, *next_ndlp;
557 int rc;
558
559 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) {
560 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
561 continue;
562
98c9ea5c
JS		 563 if ((phba->sli3_options & LPFC_SLI3_VPORT_TEARDOWN) ||
564 ((vport->port_type == LPFC_NPIV_PORT) &&
565 (ndlp->nlp_DID == NameServer_DID)))
92d7f7b0
JS		 566 lpfc_unreg_rpi(vport, ndlp);
567
568 /* Leave Fabric nodes alone on link down */
569 if (!remove && ndlp->nlp_type & NLP_FABRIC)
570 continue;
571 rc = lpfc_disc_state_machine(vport, ndlp, NULL,
572 remove
573 ? NLP_EVT_DEVICE_RM
574 : NLP_EVT_DEVICE_RECOVERY);
575 }
576 if (phba->sli3_options & LPFC_SLI3_VPORT_TEARDOWN) {
577 lpfc_mbx_unreg_vpi(vport);
09372820 578 spin_lock_irq(shost->host_lock);
92d7f7b0 579 vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
09372820 580 spin_unlock_irq(shost->host_lock);
92d7f7b0
JS		 581 }
582}
583
87af33fe 584void
98c9ea5c 585lpfc_port_link_failure(struct lpfc_vport *vport)
92d7f7b0 586{
92d7f7b0
JS		 587 /* Cleanup any outstanding RSCN activity */
588 lpfc_els_flush_rscn(vport);
589
590 /* Cleanup any outstanding ELS commands */
591 lpfc_els_flush_cmd(vport);
592
593 lpfc_cleanup_rpis(vport, 0);
594
92d7f7b0
JS		 595 /* Turn off discovery timer if its running */
596 lpfc_can_disctmo(vport);
597}
598
98c9ea5c
JS		 599static void
600lpfc_linkdown_port(struct lpfc_vport *vport)
601{
602 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
603
604 fc_host_post_event(shost, fc_get_event_number(), FCH_EVT_LINKDOWN, 0);
605
606 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
607 "Link Down: state:x%x rtry:x%x flg:x%x",
608 vport->port_state, vport->fc_ns_retry, vport->fc_flag);
609
610 lpfc_port_link_failure(vport);
611
612}
613
dea3101e 614int
685f0bf7 615lpfc_linkdown(struct lpfc_hba *phba)
dea3101e 616{
2e0fef85
JS		 617 struct lpfc_vport *vport = phba->pport;
618 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
549e55cd 619 struct lpfc_vport **vports;
685f0bf7 620 LPFC_MBOXQ_t *mb;
549e55cd 621 int i;
dea3101e 622
2e0fef85
JS		 623 if (phba->link_state == LPFC_LINK_DOWN) {
624 return 0;
c9f8735b 625 }
2e0fef85 626 spin_lock_irq(&phba->hbalock);
92d7f7b0 627 if (phba->link_state > LPFC_LINK_DOWN) {
2e0fef85 628 phba->link_state = LPFC_LINK_DOWN;
92d7f7b0
JS		 629 phba->pport->fc_flag &= ~FC_LBIT;
630 }
2e0fef85 631 spin_unlock_irq(&phba->hbalock);
549e55cd
JS		 632 vports = lpfc_create_vport_work_array(phba);
633 if (vports != NULL)
09372820 634 for(i = 0; i <= phba->max_vpi && vports[i] != NULL; i++) {
549e55cd
JS		 635 /* Issue a LINK DOWN event to all nodes */
636 lpfc_linkdown_port(vports[i]);
637 }
09372820 638 lpfc_destroy_vport_work_array(phba, vports);
dea3101e 639 /* Clean up any firmware default rpi's */
2e0fef85
JS		 640 mb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
641 if (mb) {
92d7f7b0 642 lpfc_unreg_did(phba, 0xffff, 0xffffffff, mb);
ed957684 643 mb->vport = vport;
2e0fef85 644 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
0b727fea 645 if (lpfc_sli_issue_mbox(phba, mb, MBX_NOWAIT)
dea3101e 646 == MBX_NOT_FINISHED) {
2e0fef85 647 mempool_free(mb, phba->mbox_mem_pool);
dea3101e
JB		 648 }
649 }
650
dea3101e 651 /* Setup myDID for link up if we are in pt2pt mode */
92d7f7b0
JS		 652 if (phba->pport->fc_flag & FC_PT2PT) {
653 phba->pport->fc_myDID = 0;
2e0fef85
JS		 654 mb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
655 if (mb) {
dea3101e 656 lpfc_config_link(phba, mb);
92d7f7b0 657 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
ed957684 658 mb->vport = vport;
0b727fea 659 if (lpfc_sli_issue_mbox(phba, mb, MBX_NOWAIT)
dea3101e 660 == MBX_NOT_FINISHED) {
2e0fef85 661 mempool_free(mb, phba->mbox_mem_pool);
dea3101e
JB		 662 }
663 }
2e0fef85 664 spin_lock_irq(shost->host_lock);
92d7f7b0 665 phba->pport->fc_flag &= ~(FC_PT2PT | FC_PT2PT_PLOGI);
2e0fef85 666 spin_unlock_irq(shost->host_lock);
dea3101e 667 }
2e0fef85 668
92d7f7b0
JS		 669 return 0;
670}
dea3101e 671
92d7f7b0
JS		 672static void
673lpfc_linkup_cleanup_nodes(struct lpfc_vport *vport)
674{
675 struct lpfc_nodelist *ndlp;
dea3101e 676
92d7f7b0
JS		 677 list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
678 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
679 continue;
680
681 if (ndlp->nlp_type & NLP_FABRIC) {
682 /* On Linkup its safe to clean up the ndlp
683 * from Fabric connections.
684 */
685 if (ndlp->nlp_DID != Fabric_DID)
686 lpfc_unreg_rpi(vport, ndlp);
687 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
688 } else if (!(ndlp->nlp_flag & NLP_NPR_ADISC)) {
689 /* Fail outstanding IO now since device is
690 * marked for PLOGI.
691 */
692 lpfc_unreg_rpi(vport, ndlp);
693 }
694 }
dea3101e
JB		 695}
696
92d7f7b0
JS		 697static void
698lpfc_linkup_port(struct lpfc_vport *vport)
dea3101e 699{
92d7f7b0 700 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
92d7f7b0
JS		 701 struct lpfc_hba *phba = vport->phba;
702
703 if ((vport->load_flag & FC_UNLOADING) != 0)
704 return;
705
858c9f6c
JS		 706 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
707 "Link Up: top:x%x speed:x%x flg:x%x",
708 phba->fc_topology, phba->fc_linkspeed, phba->link_flag);
709
92d7f7b0
JS		 710 /* If NPIV is not enabled, only bring the physical port up */
711 if (!(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
712 (vport != phba->pport))
713 return;
dea3101e 714
2e0fef85 715 fc_host_post_event(shost, fc_get_event_number(), FCH_EVT_LINKUP, 0);
d2873e4c 716
2e0fef85 717 spin_lock_irq(shost->host_lock);
2e0fef85
JS		 718 vport->fc_flag &= ~(FC_PT2PT | FC_PT2PT_PLOGI | FC_ABORT_DISCOVERY |
719 FC_RSCN_MODE | FC_NLP_MORE | FC_RSCN_DISCOVERY);
720 vport->fc_flag |= FC_NDISC_ACTIVE;
721 vport->fc_ns_retry = 0;
722 spin_unlock_irq(shost->host_lock);
dea3101e 723
92d7f7b0
JS		 724 if (vport->fc_flag & FC_LBIT)
725 lpfc_linkup_cleanup_nodes(vport);
dea3101e 726
92d7f7b0
JS		 727}
728
729static int
730lpfc_linkup(struct lpfc_hba *phba)
731{
549e55cd
JS		 732 struct lpfc_vport **vports;
733 int i;
92d7f7b0
JS		 734
735 phba->link_state = LPFC_LINK_UP;
736
737 /* Unblock fabric iocbs if they are blocked */
738 clear_bit(FABRIC_COMANDS_BLOCKED, &phba->bit_flags);
739 del_timer_sync(&phba->fabric_block_timer);
740
549e55cd
JS		 741 vports = lpfc_create_vport_work_array(phba);
742 if (vports != NULL)
09372820 743 for(i = 0; i <= phba->max_vpi && vports[i] != NULL; i++)
549e55cd 744 lpfc_linkup_port(vports[i]);
09372820 745 lpfc_destroy_vport_work_array(phba, vports);
92d7f7b0
JS		 746 if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)
747 lpfc_issue_clear_la(phba, phba->pport);
dea3101e
JB		 748
749 return 0;
750}
751
752/*
753 * This routine handles processing a CLEAR_LA mailbox
754 * command upon completion. It is setup in the LPFC_MBOXQ
755 * as the completion routine when the command is
756 * handed off to the SLI layer.
757 */
a6ababd2 758static void
2e0fef85 759lpfc_mbx_cmpl_clear_la(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
dea3101e 760{
2e0fef85
JS		 761 struct lpfc_vport *vport = pmb->vport;
762 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
763 struct lpfc_sli *psli = &phba->sli;
764 MAILBOX_t *mb = &pmb->mb;
dea3101e
JB		 765 uint32_t control;
766
dea3101e 767 /* Since we don't do discovery right now, turn these off here */
a4bc3379 768 psli->ring[psli->extra_ring].flag &= ~LPFC_STOP_IOCB_EVENT;
dea3101e
JB		 769 psli->ring[psli->fcp_ring].flag &= ~LPFC_STOP_IOCB_EVENT;
770 psli->ring[psli->next_ring].flag &= ~LPFC_STOP_IOCB_EVENT;
771
772 /* Check for error */
773 if ((mb->mbxStatus) && (mb->mbxStatus != 0x1601)) {
92d7f7b0 774 /* CLEAR_LA mbox error <mbxStatus> state <hba_state> */
e8b62011
JS		 775 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
776 "0320 CLEAR_LA mbxStatus error x%x hba "
777 "state x%x\n",
778 mb->mbxStatus, vport->port_state);
2e0fef85 779 phba->link_state = LPFC_HBA_ERROR;
dea3101e
JB		 780 goto out;
781 }
782
92d7f7b0
JS		 783 if (vport->port_type == LPFC_PHYSICAL_PORT)
784 phba->link_state = LPFC_HBA_READY;
785
786 spin_lock_irq(&phba->hbalock);
787 psli->sli_flag |= LPFC_PROCESS_LA;
788 control = readl(phba->HCregaddr);
789 control |= HC_LAINT_ENA;
790 writel(control, phba->HCregaddr);
791 readl(phba->HCregaddr); /* flush */
792 spin_unlock_irq(&phba->hbalock);
793 return;
dea3101e 794
2e0fef85
JS		 795 vport->num_disc_nodes = 0;
796 /* go thru NPR nodes and issue ELS PLOGIs */
797 if (vport->fc_npr_cnt)
798 lpfc_els_disc_plogi(vport);
dea3101e 799
2e0fef85
JS		 800 if (!vport->num_disc_nodes) {
801 spin_lock_irq(shost->host_lock);
802 vport->fc_flag &= ~FC_NDISC_ACTIVE;
803 spin_unlock_irq(shost->host_lock);
dea3101e
JB		 804 }
805
2e0fef85 806 vport->port_state = LPFC_VPORT_READY;
dea3101e
JB		 807
808out:
809 /* Device Discovery completes */
e8b62011
JS		 810 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
811 "0225 Device Discovery completes\n");
2e0fef85 812 mempool_free(pmb, phba->mbox_mem_pool);
dea3101e 813
2e0fef85
JS		 814 spin_lock_irq(shost->host_lock);
815 vport->fc_flag &= ~(FC_ABORT_DISCOVERY | FC_ESTABLISH_LINK);
816 spin_unlock_irq(shost->host_lock);
dea3101e
JB		 817
818 del_timer_sync(&phba->fc_estabtmo);
819
2e0fef85 820 lpfc_can_disctmo(vport);
dea3101e
JB		 821
822 /* turn on Link Attention interrupts */
2e0fef85
JS		 823
824 spin_lock_irq(&phba->hbalock);
dea3101e
JB		 825 psli->sli_flag |= LPFC_PROCESS_LA;
826 control = readl(phba->HCregaddr);
827 control |= HC_LAINT_ENA;
828 writel(control, phba->HCregaddr);
829 readl(phba->HCregaddr); /* flush */
2e0fef85 830 spin_unlock_irq(&phba->hbalock);
dea3101e
JB		 831
832 return;
833}
834
2e0fef85 835
dea3101e 836static void
25594c6b 837lpfc_mbx_cmpl_local_config_link(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
dea3101e 838{
2e0fef85 839 struct lpfc_vport *vport = pmb->vport;
dea3101e 840
25594c6b 841 if (pmb->mb.mbxStatus)
dea3101e 842 goto out;
dea3101e 843
25594c6b
JW		 844 mempool_free(pmb, phba->mbox_mem_pool);
845
846 if (phba->fc_topology == TOPOLOGY_LOOP &&
2e0fef85
JS		 847 vport->fc_flag & FC_PUBLIC_LOOP &&
848 !(vport->fc_flag & FC_LBIT)) {
25594c6b 849 /* Need to wait for FAN - use discovery timer
2e0fef85 850 * for timeout. port_state is identically
25594c6b
JW		 851 * LPFC_LOCAL_CFG_LINK while waiting for FAN
852 */
2e0fef85 853 lpfc_set_disctmo(vport);
25594c6b 854 return;
92d7f7b0 855 }
dea3101e 856
2e0fef85 857 /* Start discovery by sending a FLOGI. port_state is identically
25594c6b
JW		 858 * LPFC_FLOGI while waiting for FLOGI cmpl
859 */
92d7f7b0 860 if (vport->port_state != LPFC_FLOGI) {
92d7f7b0
JS		 861 lpfc_initial_flogi(vport);
862 }
25594c6b 863 return;
dea3101e
JB		 864
865out:
e8b62011
JS		 866 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
867 "0306 CONFIG_LINK mbxStatus error x%x "
868 "HBA state x%x\n",
869 pmb->mb.mbxStatus, vport->port_state);
92d7f7b0 870 mempool_free(pmb, phba->mbox_mem_pool);
25594c6b 871
92d7f7b0 872 lpfc_linkdown(phba);
25594c6b 873
e8b62011
JS		 874 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
875 "0200 CONFIG_LINK bad hba state x%x\n",
876 vport->port_state);
dea3101e 877
92d7f7b0 878 lpfc_issue_clear_la(phba, vport);
dea3101e
JB		 879 return;
880}
881
882static void
2e0fef85 883lpfc_mbx_cmpl_read_sparam(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
dea3101e 884{
dea3101e
JB		 885 MAILBOX_t *mb = &pmb->mb;
886 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) pmb->context1;
2e0fef85 887 struct lpfc_vport *vport = pmb->vport;
dea3101e
JB		 888
889
890 /* Check for error */
891 if (mb->mbxStatus) {
892 /* READ_SPARAM mbox error <mbxStatus> state <hba_state> */
e8b62011
JS		 893 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
894 "0319 READ_SPARAM mbxStatus error x%x "
895 "hba state x%x>\n",
896 mb->mbxStatus, vport->port_state);
dea3101e 897 lpfc_linkdown(phba);
dea3101e
JB		 898 goto out;
899 }
900
2e0fef85 901 memcpy((uint8_t *) &vport->fc_sparam, (uint8_t *) mp->virt,
dea3101e 902 sizeof (struct serv_parm));
a12e07bc 903 if (phba->cfg_soft_wwnn)
2e0fef85
JS		 904 u64_to_wwn(phba->cfg_soft_wwnn,
905 vport->fc_sparam.nodeName.u.wwn);
c3f28afa 906 if (phba->cfg_soft_wwpn)
2e0fef85
JS		 907 u64_to_wwn(phba->cfg_soft_wwpn,
908 vport->fc_sparam.portName.u.wwn);
92d7f7b0
JS		 909 memcpy(&vport->fc_nodename, &vport->fc_sparam.nodeName,
910 sizeof(vport->fc_nodename));
911 memcpy(&vport->fc_portname, &vport->fc_sparam.portName,
912 sizeof(vport->fc_portname));
913 if (vport->port_type == LPFC_PHYSICAL_PORT) {
914 memcpy(&phba->wwnn, &vport->fc_nodename, sizeof(phba->wwnn));
915 memcpy(&phba->wwpn, &vport->fc_portname, sizeof(phba->wwnn));
916 }
917
dea3101e
JB		 918 lpfc_mbuf_free(phba, mp->virt, mp->phys);
919 kfree(mp);
2e0fef85 920 mempool_free(pmb, phba->mbox_mem_pool);
dea3101e
JB		 921 return;
922
923out:
924 pmb->context1 = NULL;
925 lpfc_mbuf_free(phba, mp->virt, mp->phys);
926 kfree(mp);
92d7f7b0
JS		 927 lpfc_issue_clear_la(phba, vport);
928 mempool_free(pmb, phba->mbox_mem_pool);
dea3101e
JB		 929 return;
930}
931
932static void
92d7f7b0 933lpfc_mbx_process_link_up(struct lpfc_hba *phba, READ_LA_VAR *la)
dea3101e 934{
92d7f7b0 935 struct lpfc_vport *vport = phba->pport;
dea3101e 936 LPFC_MBOXQ_t *sparam_mbox, *cfglink_mbox;
2e0fef85 937 int i;
14691150
JS		 938 struct lpfc_dmabuf *mp;
939 int rc;
940
dea3101e
JB		 941 sparam_mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
942 cfglink_mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
943
92d7f7b0 944 spin_lock_irq(&phba->hbalock);
2fe165b6 945 switch (la->UlnkSpeed) {
92d7f7b0
JS		 946 case LA_1GHZ_LINK:
947 phba->fc_linkspeed = LA_1GHZ_LINK;
948 break;
949 case LA_2GHZ_LINK:
950 phba->fc_linkspeed = LA_2GHZ_LINK;
951 break;
952 case LA_4GHZ_LINK:
953 phba->fc_linkspeed = LA_4GHZ_LINK;
954 break;
955 case LA_8GHZ_LINK:
956 phba->fc_linkspeed = LA_8GHZ_LINK;
957 break;
958 default:
959 phba->fc_linkspeed = LA_UNKNW_LINK;
960 break;
dea3101e
JB		 961 }
962
963 phba->fc_topology = la->topology;
92d7f7b0 964 phba->link_flag &= ~LS_NPIV_FAB_SUPPORTED;
dea3101e
JB		 965
966 if (phba->fc_topology == TOPOLOGY_LOOP) {
92d7f7b0 967 phba->sli3_options &= ~LPFC_SLI3_NPIV_ENABLED;
dea3101e 968
92d7f7b0 969 /* Get Loop Map information */
dea3101e 970 if (la->il)
2e0fef85 971 vport->fc_flag |= FC_LBIT;
dea3101e 972
2e0fef85 973 vport->fc_myDID = la->granted_AL_PA;
dea3101e
JB		 974 i = la->un.lilpBde64.tus.f.bdeSize;
975
976 if (i == 0) {
977 phba->alpa_map[0] = 0;
978 } else {
e8b62011 979 if (vport->cfg_log_verbose & LOG_LINK_EVENT) {
dea3101e
JB		 980 int numalpa, j, k;
981 union {
982 uint8_t pamap[16];
983 struct {
984 uint32_t wd1;
985 uint32_t wd2;
986 uint32_t wd3;
987 uint32_t wd4;
988 } pa;
989 } un;
990 numalpa = phba->alpa_map[0];
991 j = 0;
992 while (j < numalpa) {
993 memset(un.pamap, 0, 16);
994 for (k = 1; j < numalpa; k++) {
995 un.pamap[k - 1] =
996 phba->alpa_map[j + 1];
997 j++;
998 if (k == 16)
999 break;
1000 }
1001 /* Link Up Event ALPA map */
1002 lpfc_printf_log(phba,
92d7f7b0
JS		 1003 KERN_WARNING,
1004 LOG_LINK_EVENT,
e8b62011 1005 "1304 Link Up Event "
92d7f7b0
JS		 1006 "ALPA map Data: x%x "
1007 "x%x x%x x%x\n",
92d7f7b0
JS		 1008 un.pa.wd1, un.pa.wd2,
1009 un.pa.wd3, un.pa.wd4);
dea3101e
JB		 1010 }
1011 }
1012 }
1013 } else {
92d7f7b0 1014 if (!(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)) {
78b2d852 1015 if (phba->max_vpi && phba->cfg_enable_npiv &&
92d7f7b0
JS		 1016 (phba->sli_rev == 3))
1017 phba->sli3_options |= LPFC_SLI3_NPIV_ENABLED;
1018 }
2e0fef85
JS		 1019 vport->fc_myDID = phba->fc_pref_DID;
1020 vport->fc_flag |= FC_LBIT;
dea3101e 1021 }
92d7f7b0 1022 spin_unlock_irq(&phba->hbalock);
dea3101e
JB		 1023
1024 lpfc_linkup(phba);
1025 if (sparam_mbox) {
92d7f7b0 1026 lpfc_read_sparam(phba, sparam_mbox, 0);
2e0fef85 1027 sparam_mbox->vport = vport;
dea3101e 1028 sparam_mbox->mbox_cmpl = lpfc_mbx_cmpl_read_sparam;
0b727fea 1029 rc = lpfc_sli_issue_mbox(phba, sparam_mbox, MBX_NOWAIT);
14691150
JS		 1030 if (rc == MBX_NOT_FINISHED) {
1031 mp = (struct lpfc_dmabuf *) sparam_mbox->context1;
1032 lpfc_mbuf_free(phba, mp->virt, mp->phys);
1033 kfree(mp);
1034 mempool_free(sparam_mbox, phba->mbox_mem_pool);
1035 if (cfglink_mbox)
1036 mempool_free(cfglink_mbox, phba->mbox_mem_pool);
92d7f7b0 1037 goto out;
14691150 1038 }
dea3101e
JB		 1039 }
1040
1041 if (cfglink_mbox) {
2e0fef85 1042 vport->port_state = LPFC_LOCAL_CFG_LINK;
dea3101e 1043 lpfc_config_link(phba, cfglink_mbox);
2e0fef85 1044 cfglink_mbox->vport = vport;
25594c6b 1045 cfglink_mbox->mbox_cmpl = lpfc_mbx_cmpl_local_config_link;
0b727fea 1046 rc = lpfc_sli_issue_mbox(phba, cfglink_mbox, MBX_NOWAIT);
92d7f7b0
JS		 1047 if (rc != MBX_NOT_FINISHED)
1048 return;
1049 mempool_free(cfglink_mbox, phba->mbox_mem_pool);
dea3101e 1050 }
92d7f7b0
JS		 1051out:
1052 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
e8b62011
JS		 1053 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
1054 "0263 Discovery Mailbox error: state: 0x%x : %p %p\n",
1055 vport->port_state, sparam_mbox, cfglink_mbox);
92d7f7b0
JS		 1056 lpfc_issue_clear_la(phba, vport);
1057 return;
dea3101e
JB		 1058}
1059
1060static void
2e0fef85
JS		 1061lpfc_mbx_issue_link_down(struct lpfc_hba *phba)
1062{
dea3101e
JB		 1063 uint32_t control;
1064 struct lpfc_sli *psli = &phba->sli;
1065
1066 lpfc_linkdown(phba);
1067
1068 /* turn on Link Attention interrupts - no CLEAR_LA needed */
2e0fef85 1069 spin_lock_irq(&phba->hbalock);
dea3101e
JB		 1070 psli->sli_flag |= LPFC_PROCESS_LA;
1071 control = readl(phba->HCregaddr);
1072 control |= HC_LAINT_ENA;
1073 writel(control, phba->HCregaddr);
1074 readl(phba->HCregaddr); /* flush */
2e0fef85 1075 spin_unlock_irq(&phba->hbalock);
dea3101e
JB		 1076}
1077
1078/*
1079 * This routine handles processing a READ_LA mailbox
1080 * command upon completion. It is setup in the LPFC_MBOXQ
1081 * as the completion routine when the command is
1082 * handed off to the SLI layer.
1083 */
1084void
2e0fef85 1085lpfc_mbx_cmpl_read_la(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
dea3101e 1086{
2e0fef85
JS		 1087 struct lpfc_vport *vport = pmb->vport;
1088 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
dea3101e
JB		 1089 READ_LA_VAR *la;
1090 MAILBOX_t *mb = &pmb->mb;
1091 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
1092
1093 /* Check for error */
1094 if (mb->mbxStatus) {
ed957684 1095 lpfc_printf_log(phba, KERN_INFO, LOG_LINK_EVENT,
e8b62011
JS		 1096 "1307 READ_LA mbox error x%x state x%x\n",
1097 mb->mbxStatus, vport->port_state);
dea3101e 1098 lpfc_mbx_issue_link_down(phba);
2e0fef85 1099 phba->link_state = LPFC_HBA_ERROR;
dea3101e
JB		 1100 goto lpfc_mbx_cmpl_read_la_free_mbuf;
1101 }
1102
1103 la = (READ_LA_VAR *) & pmb->mb.un.varReadLA;
1104
1105 memcpy(&phba->alpa_map[0], mp->virt, 128);
1106
2e0fef85 1107 spin_lock_irq(shost->host_lock);
c9f8735b 1108 if (la->pb)
2e0fef85 1109 vport->fc_flag |= FC_BYPASSED_MODE;
c9f8735b 1110 else
2e0fef85
JS		 1111 vport->fc_flag &= ~FC_BYPASSED_MODE;
1112 spin_unlock_irq(shost->host_lock);
c9f8735b 1113
dea3101e 1114 if (((phba->fc_eventTag + 1) < la->eventTag) ||
92d7f7b0 1115 (phba->fc_eventTag == la->eventTag)) {
dea3101e 1116 phba->fc_stat.LinkMultiEvent++;
2e0fef85 1117 if (la->attType == AT_LINK_UP)
dea3101e
JB		 1118 if (phba->fc_eventTag != 0)
1119 lpfc_linkdown(phba);
92d7f7b0 1120 }
dea3101e
JB		 1121
1122 phba->fc_eventTag = la->eventTag;
1123
1124 if (la->attType == AT_LINK_UP) {
1125 phba->fc_stat.LinkUp++;
2e0fef85 1126 if (phba->link_flag & LS_LOOPBACK_MODE) {
5b8bd0c9 1127 lpfc_printf_log(phba, KERN_INFO, LOG_LINK_EVENT,
e8b62011
JS		 1128 "1306 Link Up Event in loop back mode "
1129 "x%x received Data: x%x x%x x%x x%x\n",
1130 la->eventTag, phba->fc_eventTag,
1131 la->granted_AL_PA, la->UlnkSpeed,
1132 phba->alpa_map[0]);
5b8bd0c9
JS		 1133 } else {
1134 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
e8b62011
JS		 1135 "1303 Link Up Event x%x received "
1136 "Data: x%x x%x x%x x%x\n",
1137 la->eventTag, phba->fc_eventTag,
1138 la->granted_AL_PA, la->UlnkSpeed,
1139 phba->alpa_map[0]);
5b8bd0c9 1140 }
92d7f7b0 1141 lpfc_mbx_process_link_up(phba, la);
dea3101e
JB		 1142 } else {
1143 phba->fc_stat.LinkDown++;
1144 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
e8b62011 1145 "1305 Link Down Event x%x received "
dea3101e 1146 "Data: x%x x%x x%x\n",
e8b62011 1147 la->eventTag, phba->fc_eventTag,
2e0fef85 1148 phba->pport->port_state, vport->fc_flag);
dea3101e
JB		 1149 lpfc_mbx_issue_link_down(phba);
1150 }
1151
1152lpfc_mbx_cmpl_read_la_free_mbuf:
1153 lpfc_mbuf_free(phba, mp->virt, mp->phys);
1154 kfree(mp);
1155 mempool_free(pmb, phba->mbox_mem_pool);
1156 return;
1157}
1158
1159/*
1160 * This routine handles processing a REG_LOGIN mailbox
1161 * command upon completion. It is setup in the LPFC_MBOXQ
1162 * as the completion routine when the command is
1163 * handed off to the SLI layer.
1164 */
1165void
2e0fef85 1166lpfc_mbx_cmpl_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
dea3101e 1167{
2e0fef85 1168 struct lpfc_vport *vport = pmb->vport;
92d7f7b0 1169 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
2e0fef85 1170 struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) pmb->context2;
dea3101e 1171
dea3101e
JB		 1172 pmb->context1 = NULL;
1173
1174 /* Good status, call state machine */
2e0fef85 1175 lpfc_disc_state_machine(vport, ndlp, pmb, NLP_EVT_CMPL_REG_LOGIN);
dea3101e
JB		 1176 lpfc_mbuf_free(phba, mp->virt, mp->phys);
1177 kfree(mp);
2e0fef85 1178 mempool_free(pmb, phba->mbox_mem_pool);
329f9bc7 1179 lpfc_nlp_put(ndlp);
dea3101e
JB		 1180
1181 return;
1182}
1183
92d7f7b0
JS		 1184static void
1185lpfc_mbx_cmpl_unreg_vpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
1186{
1187 MAILBOX_t *mb = &pmb->mb;
1188 struct lpfc_vport *vport = pmb->vport;
1189 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1190
1191 switch (mb->mbxStatus) {
1192 case 0x0011:
1193 case 0x0020:
1194 case 0x9700:
e8b62011
JS		 1195 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
1196 "0911 cmpl_unreg_vpi, mb status = 0x%x\n",
1197 mb->mbxStatus);
92d7f7b0 1198 break;
92d7f7b0
JS		 1199 }
1200 vport->unreg_vpi_cmpl = VPORT_OK;
1201 mempool_free(pmb, phba->mbox_mem_pool);
1202 /*
1203 * This shost reference might have been taken at the beginning of
1204 * lpfc_vport_delete()
1205 */
1206 if (vport->load_flag & FC_UNLOADING)
1207 scsi_host_put(shost);
1208}
1209
1210void
1211lpfc_mbx_unreg_vpi(struct lpfc_vport *vport)
1212{
1213 struct lpfc_hba *phba = vport->phba;
1214 LPFC_MBOXQ_t *mbox;
1215 int rc;
1216
1217 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1218 if (!mbox)
1219 return;
1220
1221 lpfc_unreg_vpi(phba, vport->vpi, mbox);
1222 mbox->vport = vport;
1223 mbox->mbox_cmpl = lpfc_mbx_cmpl_unreg_vpi;
0b727fea 1224 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
92d7f7b0 1225 if (rc == MBX_NOT_FINISHED) {
e8b62011
JS		 1226 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX | LOG_VPORT,
1227 "1800 Could not issue unreg_vpi\n");
92d7f7b0
JS		 1228 mempool_free(mbox, phba->mbox_mem_pool);
1229 vport->unreg_vpi_cmpl = VPORT_ERROR;
1230 }
1231}
1232
1233static void
1234lpfc_mbx_cmpl_reg_vpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
1235{
1236 struct lpfc_vport *vport = pmb->vport;
1237 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1238 MAILBOX_t *mb = &pmb->mb;
1239
1240 switch (mb->mbxStatus) {
1241 case 0x0011:
1242 case 0x9601:
1243 case 0x9602:
e8b62011
JS		 1244 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
1245 "0912 cmpl_reg_vpi, mb status = 0x%x\n",
1246 mb->mbxStatus);
92d7f7b0
JS		 1247 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
1248 spin_lock_irq(shost->host_lock);
1249 vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP);
1250 spin_unlock_irq(shost->host_lock);
1251 vport->fc_myDID = 0;
1252 goto out;
1253 }
92d7f7b0
JS		 1254
1255 vport->num_disc_nodes = 0;
1256 /* go thru NPR list and issue ELS PLOGIs */
1257 if (vport->fc_npr_cnt)
1258 lpfc_els_disc_plogi(vport);
1259
1260 if (!vport->num_disc_nodes) {
1261 spin_lock_irq(shost->host_lock);
1262 vport->fc_flag &= ~FC_NDISC_ACTIVE;
1263 spin_unlock_irq(shost->host_lock);
1264 lpfc_can_disctmo(vport);
1265 }
1266 vport->port_state = LPFC_VPORT_READY;
1267
1268out:
1269 mempool_free(pmb, phba->mbox_mem_pool);
1270 return;
1271}
1272
dea3101e
JB		 1273/*
1274 * This routine handles processing a Fabric REG_LOGIN mailbox
1275 * command upon completion. It is setup in the LPFC_MBOXQ
1276 * as the completion routine when the command is
1277 * handed off to the SLI layer.
1278 */
1279void
2e0fef85 1280lpfc_mbx_cmpl_fabric_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
dea3101e 1281{
92d7f7b0 1282 struct lpfc_vport *vport = pmb->vport;
2e0fef85
JS		 1283 MAILBOX_t *mb = &pmb->mb;
1284 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
92d7f7b0 1285 struct lpfc_nodelist *ndlp;
549e55cd
JS		 1286 struct lpfc_vport **vports;
1287 int i;
dea3101e 1288
549e55cd 1289 ndlp = (struct lpfc_nodelist *) pmb->context2;
329f9bc7
JS		 1290 pmb->context1 = NULL;
1291 pmb->context2 = NULL;
dea3101e
JB		 1292 if (mb->mbxStatus) {
1293 lpfc_mbuf_free(phba, mp->virt, mp->phys);
1294 kfree(mp);
329f9bc7
JS		 1295 mempool_free(pmb, phba->mbox_mem_pool);
1296 lpfc_nlp_put(ndlp);
dea3101e 1297
92d7f7b0
JS		 1298 if (phba->fc_topology == TOPOLOGY_LOOP) {
1299 /* FLOGI failed, use loop map to make discovery list */
1300 lpfc_disc_list_loopmap(vport);
1301
1302 /* Start discovery */
1303 lpfc_disc_start(vport);
1304 return;
1305 }
1306
1307 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
e8b62011
JS		 1308 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
1309 "0258 Register Fabric login error: 0x%x\n",
1310 mb->mbxStatus);
dea3101e
JB		 1311 return;
1312 }
1313
dea3101e 1314 ndlp->nlp_rpi = mb->un.varWords[0];
dea3101e 1315 ndlp->nlp_type |= NLP_FABRIC;
2e0fef85 1316 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
dea3101e 1317
329f9bc7
JS		 1318 lpfc_nlp_put(ndlp); /* Drop the reference from the mbox */
1319
2e0fef85 1320 if (vport->port_state == LPFC_FABRIC_CFG_LINK) {
549e55cd
JS		 1321 vports = lpfc_create_vport_work_array(phba);
1322 if (vports != NULL)
1323 for(i = 0;
09372820 1324 i <= phba->max_vpi && vports[i] != NULL;
549e55cd
JS		 1325 i++) {
1326 if (vports[i]->port_type == LPFC_PHYSICAL_PORT)
1327 continue;
1328 if (phba->link_flag & LS_NPIV_FAB_SUPPORTED)
1329 lpfc_initial_fdisc(vports[i]);
1330 else if (phba->sli3_options &
1331 LPFC_SLI3_NPIV_ENABLED) {
1332 lpfc_vport_set_state(vports[i],
1333 FC_VPORT_NO_FABRIC_SUPP);
e8b62011
JS		 1334 lpfc_printf_vlog(vport, KERN_ERR,
1335 LOG_ELS,
1336 "0259 No NPIV "
1337 "Fabric support\n");
549e55cd 1338 }
dea3101e 1339 }
09372820 1340 lpfc_destroy_vport_work_array(phba, vports);
92d7f7b0 1341 lpfc_do_scr_ns_plogi(phba, vport);
dea3101e
JB		 1342 }
1343
1344 lpfc_mbuf_free(phba, mp->virt, mp->phys);
1345 kfree(mp);
329f9bc7 1346 mempool_free(pmb, phba->mbox_mem_pool);
dea3101e
JB		 1347 return;
1348}
1349
1350/*
1351 * This routine handles processing a NameServer REG_LOGIN mailbox
1352 * command upon completion. It is setup in the LPFC_MBOXQ
1353 * as the completion routine when the command is
1354 * handed off to the SLI layer.
1355 */
1356void
2e0fef85 1357lpfc_mbx_cmpl_ns_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
dea3101e 1358{
2e0fef85
JS		 1359 MAILBOX_t *mb = &pmb->mb;
1360 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
1361 struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) pmb->context2;
1362 struct lpfc_vport *vport = pmb->vport;
dea3101e
JB		 1363
1364 if (mb->mbxStatus) {
92d7f7b0 1365out:
329f9bc7 1366 lpfc_nlp_put(ndlp);
dea3101e
JB		 1367 lpfc_mbuf_free(phba, mp->virt, mp->phys);
1368 kfree(mp);
de0c5b32 1369 mempool_free(pmb, phba->mbox_mem_pool);
87af33fe
JS		 1370
1371 /* If no other thread is using the ndlp, free it */
1372 lpfc_nlp_not_used(ndlp);
dea3101e 1373
92d7f7b0
JS		 1374 if (phba->fc_topology == TOPOLOGY_LOOP) {
1375 /*
1376 * RegLogin failed, use loop map to make discovery
1377 * list
1378 */
1379 lpfc_disc_list_loopmap(vport);
dea3101e 1380
92d7f7b0
JS		 1381 /* Start discovery */
1382 lpfc_disc_start(vport);
1383 return;
1384 }
1385 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
e8b62011
JS		 1386 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
1387 "0260 Register NameServer error: 0x%x\n",
1388 mb->mbxStatus);
dea3101e
JB		 1389 return;
1390 }
1391
1392 pmb->context1 = NULL;
1393
dea3101e 1394 ndlp->nlp_rpi = mb->un.varWords[0];
dea3101e 1395 ndlp->nlp_type |= NLP_FABRIC;
2e0fef85 1396 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
dea3101e 1397
2e0fef85
JS		 1398 if (vport->port_state < LPFC_VPORT_READY) {
1399 /* Link up discovery requires Fabric registration. */
92d7f7b0
JS		 1400 lpfc_ns_cmd(vport, SLI_CTNS_RFF_ID, 0, 0); /* Do this first! */
1401 lpfc_ns_cmd(vport, SLI_CTNS_RNN_ID, 0, 0);
1402 lpfc_ns_cmd(vport, SLI_CTNS_RSNN_NN, 0, 0);
1403 lpfc_ns_cmd(vport, SLI_CTNS_RSPN_ID, 0, 0);
1404 lpfc_ns_cmd(vport, SLI_CTNS_RFT_ID, 0, 0);
1405
1406 /* Issue SCR just before NameServer GID_FT Query */
1407 lpfc_issue_els_scr(vport, SCR_DID, 0);
dea3101e
JB		 1408 }
1409
2e0fef85 1410 vport->fc_ns_retry = 0;
dea3101e 1411 /* Good status, issue CT Request to NameServer */
92d7f7b0 1412 if (lpfc_ns_cmd(vport, SLI_CTNS_GID_FT, 0, 0)) {
dea3101e 1413 /* Cannot issue NameServer Query, so finish up discovery */
92d7f7b0 1414 goto out;
dea3101e
JB		 1415 }
1416
329f9bc7 1417 lpfc_nlp_put(ndlp);
dea3101e
JB		 1418 lpfc_mbuf_free(phba, mp->virt, mp->phys);
1419 kfree(mp);
2e0fef85 1420 mempool_free(pmb, phba->mbox_mem_pool);
dea3101e
JB		 1421
1422 return;
1423}
1424
1425static void
2e0fef85 1426lpfc_register_remote_port(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
dea3101e 1427{
2e0fef85
JS		 1428 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1429 struct fc_rport *rport;
dea3101e
JB		 1430 struct lpfc_rport_data *rdata;
1431 struct fc_rport_identifiers rport_ids;
2e0fef85 1432 struct lpfc_hba *phba = vport->phba;
dea3101e
JB		 1433
1434 /* Remote port has reappeared. Re-register w/ FC transport */
68ce1eb5
AM		 1435 rport_ids.node_name = wwn_to_u64(ndlp->nlp_nodename.u.wwn);
1436 rport_ids.port_name = wwn_to_u64(ndlp->nlp_portname.u.wwn);
dea3101e
JB		 1437 rport_ids.port_id = ndlp->nlp_DID;
1438 rport_ids.roles = FC_RPORT_ROLE_UNKNOWN;
dea3101e 1439
329f9bc7
JS		 1440 /*
1441 * We leave our node pointer in rport->dd_data when we unregister a
1442 * FCP target port. But fc_remote_port_add zeros the space to which
1443 * rport->dd_data points. So, if we're reusing a previously
1444 * registered port, drop the reference that we took the last time we
1445 * registered the port.
1446 */
1447 if (ndlp->rport && ndlp->rport->dd_data &&
92d7f7b0 1448 ((struct lpfc_rport_data *) ndlp->rport->dd_data)->pnode == ndlp) {
329f9bc7
JS		 1449 lpfc_nlp_put(ndlp);
1450 }
858c9f6c
JS		 1451
1452 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
1453 "rport add: did:x%x flg:x%x type x%x",
1454 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type);
1455
2e0fef85 1456 ndlp->rport = rport = fc_remote_port_add(shost, 0, &rport_ids);
329f9bc7 1457 if (!rport || !get_device(&rport->dev)) {
dea3101e
JB		 1458 dev_printk(KERN_WARNING, &phba->pcidev->dev,
1459 "Warning: fc_remote_port_add failed\n");
1460 return;
1461 }
1462
1463 /* initialize static port data */
1464 rport->maxframe_size = ndlp->nlp_maxframe;
1465 rport->supported_classes = ndlp->nlp_class_sup;
dea3101e 1466 rdata = rport->dd_data;
329f9bc7 1467 rdata->pnode = lpfc_nlp_get(ndlp);
23dc04f1
JSEC		 1468
1469 if (ndlp->nlp_type & NLP_FCP_TARGET)
1470 rport_ids.roles |= FC_RPORT_ROLE_FCP_TARGET;
1471 if (ndlp->nlp_type & NLP_FCP_INITIATOR)
1472 rport_ids.roles |= FC_RPORT_ROLE_FCP_INITIATOR;
1473
1474
1475 if (rport_ids.roles != FC_RPORT_ROLE_UNKNOWN)
1476 fc_remote_port_rolechg(rport, rport_ids.roles);
1477
071fbd3d 1478 if ((rport->scsi_target_id != -1) &&
92d7f7b0 1479 (rport->scsi_target_id < LPFC_MAX_TARGET)) {
071fbd3d
JS		 1480 ndlp->nlp_sid = rport->scsi_target_id;
1481 }
19a7b4ae
JSEC		 1482 return;
1483}
1484
1485static void
2e0fef85 1486lpfc_unregister_remote_port(struct lpfc_nodelist *ndlp)
19a7b4ae
JSEC		 1487{
1488 struct fc_rport *rport = ndlp->rport;
c01f3208 1489
858c9f6c
JS		 1490 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_RPORT,
1491 "rport delete: did:x%x flg:x%x type x%x",
1492 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type);
1493
19a7b4ae 1494 fc_remote_port_delete(rport);
dea3101e
JB		 1495
1496 return;
1497}
1498
de0c5b32 1499static void
2e0fef85 1500lpfc_nlp_counters(struct lpfc_vport *vport, int state, int count)
dea3101e 1501{
2e0fef85
JS		 1502 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1503
1504 spin_lock_irq(shost->host_lock);
de0c5b32
JS		 1505 switch (state) {
1506 case NLP_STE_UNUSED_NODE:
2e0fef85 1507 vport->fc_unused_cnt += count;
de0c5b32
JS		 1508 break;
1509 case NLP_STE_PLOGI_ISSUE:
2e0fef85 1510 vport->fc_plogi_cnt += count;
de0c5b32
JS		 1511 break;
1512 case NLP_STE_ADISC_ISSUE:
2e0fef85 1513 vport->fc_adisc_cnt += count;
dea3101e 1514 break;
de0c5b32 1515 case NLP_STE_REG_LOGIN_ISSUE:
2e0fef85 1516 vport->fc_reglogin_cnt += count;
de0c5b32
JS		 1517 break;
1518 case NLP_STE_PRLI_ISSUE:
2e0fef85 1519 vport->fc_prli_cnt += count;
de0c5b32
JS		 1520 break;
1521 case NLP_STE_UNMAPPED_NODE:
2e0fef85 1522 vport->fc_unmap_cnt += count;
de0c5b32
JS		 1523 break;
1524 case NLP_STE_MAPPED_NODE:
2e0fef85 1525 vport->fc_map_cnt += count;
de0c5b32
JS		 1526 break;
1527 case NLP_STE_NPR_NODE:
2e0fef85 1528 vport->fc_npr_cnt += count;
de0c5b32
JS		 1529 break;
1530 }
2e0fef85 1531 spin_unlock_irq(shost->host_lock);
de0c5b32 1532}
66a9ed66 1533
de0c5b32 1534static void
2e0fef85 1535lpfc_nlp_state_cleanup(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
de0c5b32
JS		 1536 int old_state, int new_state)
1537{
2e0fef85
JS		 1538 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1539
de0c5b32
JS		 1540 if (new_state == NLP_STE_UNMAPPED_NODE) {
1541 ndlp->nlp_type &= ~(NLP_FCP_TARGET | NLP_FCP_INITIATOR);
1542 ndlp->nlp_flag &= ~NLP_NODEV_REMOVE;
1543 ndlp->nlp_type |= NLP_FC_NODE;
1544 }
1545 if (new_state == NLP_STE_MAPPED_NODE)
1546 ndlp->nlp_flag &= ~NLP_NODEV_REMOVE;
1547 if (new_state == NLP_STE_NPR_NODE)
1548 ndlp->nlp_flag &= ~NLP_RCV_PLOGI;
1549
1550 /* Transport interface */
1551 if (ndlp->rport && (old_state == NLP_STE_MAPPED_NODE ||
1552 old_state == NLP_STE_UNMAPPED_NODE)) {
2e0fef85
JS		 1553 vport->phba->nport_event_cnt++;
1554 lpfc_unregister_remote_port(ndlp);
de0c5b32 1555 }
dea3101e 1556
de0c5b32
JS		 1557 if (new_state == NLP_STE_MAPPED_NODE ||
1558 new_state == NLP_STE_UNMAPPED_NODE) {
2e0fef85 1559 vport->phba->nport_event_cnt++;
858c9f6c
JS		 1560 /*
1561 * Tell the fc transport about the port, if we haven't
1562 * already. If we have, and it's a scsi entity, be
1563 * sure to unblock any attached scsi devices
1564 */
1565 lpfc_register_remote_port(vport, ndlp);
de0c5b32 1566 }
858c9f6c
JS		 1567 /*
1568 * if we added to Mapped list, but the remote port
1569 * registration failed or assigned a target id outside
1570 * our presentable range - move the node to the
1571 * Unmapped List
1572 */
de0c5b32
JS		 1573 if (new_state == NLP_STE_MAPPED_NODE &&
1574 (!ndlp->rport ||
1575 ndlp->rport->scsi_target_id == -1 ||
1576 ndlp->rport->scsi_target_id >= LPFC_MAX_TARGET)) {
2e0fef85 1577 spin_lock_irq(shost->host_lock);
de0c5b32 1578 ndlp->nlp_flag |= NLP_TGT_NO_SCSIID;
2e0fef85
JS		 1579 spin_unlock_irq(shost->host_lock);
1580 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
dea3101e 1581 }
de0c5b32
JS		 1582}
1583
685f0bf7
JS		 1584static char *
1585lpfc_nlp_state_name(char *buffer, size_t size, int state)
1586{
1587 static char *states[] = {
1588 [NLP_STE_UNUSED_NODE] = "UNUSED",
1589 [NLP_STE_PLOGI_ISSUE] = "PLOGI",
1590 [NLP_STE_ADISC_ISSUE] = "ADISC",
1591 [NLP_STE_REG_LOGIN_ISSUE] = "REGLOGIN",
1592 [NLP_STE_PRLI_ISSUE] = "PRLI",
1593 [NLP_STE_UNMAPPED_NODE] = "UNMAPPED",
1594 [NLP_STE_MAPPED_NODE] = "MAPPED",
1595 [NLP_STE_NPR_NODE] = "NPR",
1596 };
1597
311464ec 1598 if (state < NLP_STE_MAX_STATE && states[state])
685f0bf7
JS		 1599 strlcpy(buffer, states[state], size);
1600 else
1601 snprintf(buffer, size, "unknown (%d)", state);
1602 return buffer;
1603}
1604
de0c5b32 1605void
2e0fef85
JS		 1606lpfc_nlp_set_state(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1607 int state)
de0c5b32 1608{
2e0fef85 1609 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
de0c5b32 1610 int old_state = ndlp->nlp_state;
685f0bf7 1611 char name1[16], name2[16];
de0c5b32 1612
e8b62011
JS		 1613 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
1614 "0904 NPort state transition x%06x, %s -> %s\n",
1615 ndlp->nlp_DID,
1616 lpfc_nlp_state_name(name1, sizeof(name1), old_state),
1617 lpfc_nlp_state_name(name2, sizeof(name2), state));
858c9f6c
JS		 1618
1619 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE,
1620 "node statechg did:x%x old:%d ste:%d",
1621 ndlp->nlp_DID, old_state, state);
1622
de0c5b32
JS		 1623 if (old_state == NLP_STE_NPR_NODE &&
1624 (ndlp->nlp_flag & NLP_DELAY_TMO) != 0 &&
1625 state != NLP_STE_NPR_NODE)
2e0fef85 1626 lpfc_cancel_retry_delay_tmo(vport, ndlp);
de0c5b32
JS		 1627 if (old_state == NLP_STE_UNMAPPED_NODE) {
1628 ndlp->nlp_flag &= ~NLP_TGT_NO_SCSIID;
1629 ndlp->nlp_type &= ~NLP_FC_NODE;
1630 }
1631
685f0bf7 1632 if (list_empty(&ndlp->nlp_listp)) {
2e0fef85
JS		 1633 spin_lock_irq(shost->host_lock);
1634 list_add_tail(&ndlp->nlp_listp, &vport->fc_nodes);
1635 spin_unlock_irq(shost->host_lock);
685f0bf7 1636 } else if (old_state)
2e0fef85 1637 lpfc_nlp_counters(vport, old_state, -1);
de0c5b32
JS		 1638
1639 ndlp->nlp_state = state;
2e0fef85
JS		 1640 lpfc_nlp_counters(vport, state, 1);
1641 lpfc_nlp_state_cleanup(vport, ndlp, old_state, state);
de0c5b32
JS		 1642}
1643
1644void
2e0fef85 1645lpfc_dequeue_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
de0c5b32 1646{
2e0fef85
JS		 1647 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1648
de0c5b32 1649 if ((ndlp->nlp_flag & NLP_DELAY_TMO) != 0)
2e0fef85 1650 lpfc_cancel_retry_delay_tmo(vport, ndlp);
de0c5b32 1651 if (ndlp->nlp_state && !list_empty(&ndlp->nlp_listp))
2e0fef85
JS		 1652 lpfc_nlp_counters(vport, ndlp->nlp_state, -1);
1653 spin_lock_irq(shost->host_lock);
685f0bf7 1654 list_del_init(&ndlp->nlp_listp);
2e0fef85 1655 spin_unlock_irq(shost->host_lock);
858c9f6c
JS		 1656 lpfc_nlp_state_cleanup(vport, ndlp, ndlp->nlp_state,
1657 NLP_STE_UNUSED_NODE);
de0c5b32
JS		 1658}
1659
1660void
2e0fef85 1661lpfc_drop_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
de0c5b32 1662{
87af33fe
JS		 1663 /*
1664 * Use of lpfc_drop_node and UNUSED list. lpfc_drop_node should
1665 * be used if we wish to issue the "last" lpfc_nlp_put() to remove
1666 * the ndlp from the vport. The ndlp resides on the UNUSED list
1667 * until ALL other outstanding threads have completed. Thus, if a
1668 * ndlp is on the UNUSED list already, we should never do another
1669 * lpfc_drop_node() on it.
1670 */
51ef4c26 1671 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNUSED_NODE);
87af33fe 1672 lpfc_nlp_put(ndlp);
98c9ea5c 1673 return;
dea3101e
JB		 1674}
1675
1676/*
1677 * Start / ReStart rescue timer for Discovery / RSCN handling
1678 */
1679void
2e0fef85 1680lpfc_set_disctmo(struct lpfc_vport *vport)
dea3101e 1681{
2e0fef85
JS		 1682 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1683 struct lpfc_hba *phba = vport->phba;
dea3101e
JB		 1684 uint32_t tmo;
1685
2e0fef85 1686 if (vport->port_state == LPFC_LOCAL_CFG_LINK) {
c9f8735b
JW		 1687 /* For FAN, timeout should be greater then edtov */
1688 tmo = (((phba->fc_edtov + 999) / 1000) + 1);
1689 } else {
1690 /* Normal discovery timeout should be > then ELS/CT timeout
1691 * FC spec states we need 3 * ratov for CT requests
1692 */
1693 tmo = ((phba->fc_ratov * 3) + 3);
1694 }
dea3101e 1695
858c9f6c
JS		 1696
1697 if (!timer_pending(&vport->fc_disctmo)) {
1698 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
1699 "set disc timer: tmo:x%x state:x%x flg:x%x",
1700 tmo, vport->port_state, vport->fc_flag);
1701 }
1702
2e0fef85
JS		 1703 mod_timer(&vport->fc_disctmo, jiffies + HZ * tmo);
1704 spin_lock_irq(shost->host_lock);
1705 vport->fc_flag |= FC_DISC_TMO;
1706 spin_unlock_irq(shost->host_lock);
dea3101e
JB		 1707
1708 /* Start Discovery Timer state <hba_state> */
e8b62011
JS		 1709 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
1710 "0247 Start Discovery Timer state x%x "
1711 "Data: x%x x%lx x%x x%x\n",
1712 vport->port_state, tmo,
1713 (unsigned long)&vport->fc_disctmo, vport->fc_plogi_cnt,
1714 vport->fc_adisc_cnt);
dea3101e
JB		 1715
1716 return;
1717}
1718
1719/*
1720 * Cancel rescue timer for Discovery / RSCN handling
1721 */
1722int
2e0fef85 1723lpfc_can_disctmo(struct lpfc_vport *vport)
dea3101e 1724{
2e0fef85 1725 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2e0fef85
JS		 1726 unsigned long iflags;
1727
858c9f6c
JS		 1728 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
1729 "can disc timer: state:x%x rtry:x%x flg:x%x",
1730 vport->port_state, vport->fc_ns_retry, vport->fc_flag);
1731
dea3101e 1732 /* Turn off discovery timer if its running */
2e0fef85
JS		 1733 if (vport->fc_flag & FC_DISC_TMO) {
1734 spin_lock_irqsave(shost->host_lock, iflags);
1735 vport->fc_flag &= ~FC_DISC_TMO;
1736 spin_unlock_irqrestore(shost->host_lock, iflags);
1737 del_timer_sync(&vport->fc_disctmo);
1738 spin_lock_irqsave(&vport->work_port_lock, iflags);
1739 vport->work_port_events &= ~WORKER_DISC_TMO;
1740 spin_unlock_irqrestore(&vport->work_port_lock, iflags);
dea3101e
JB		 1741 }
1742
1743 /* Cancel Discovery Timer state <hba_state> */
e8b62011
JS		 1744 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
1745 "0248 Cancel Discovery Timer state x%x "
1746 "Data: x%x x%x x%x\n",
1747 vport->port_state, vport->fc_flag,
1748 vport->fc_plogi_cnt, vport->fc_adisc_cnt);
2fe165b6 1749 return 0;
dea3101e
JB		 1750}
1751
1752/*
1753 * Check specified ring for outstanding IOCB on the SLI queue
1754 * Return true if iocb matches the specified nport
1755 */
1756int
2e0fef85
JS		 1757lpfc_check_sli_ndlp(struct lpfc_hba *phba,
1758 struct lpfc_sli_ring *pring,
1759 struct lpfc_iocbq *iocb,
1760 struct lpfc_nodelist *ndlp)
dea3101e 1761{
2e0fef85
JS		 1762 struct lpfc_sli *psli = &phba->sli;
1763 IOCB_t *icmd = &iocb->iocb;
92d7f7b0
JS		 1764 struct lpfc_vport *vport = ndlp->vport;
1765
1766 if (iocb->vport != vport)
1767 return 0;
1768
dea3101e
JB		 1769 if (pring->ringno == LPFC_ELS_RING) {
1770 switch (icmd->ulpCommand) {
1771 case CMD_GEN_REQUEST64_CR:
1772 if (icmd->ulpContext == (volatile ushort)ndlp->nlp_rpi)
2fe165b6 1773 return 1;
dea3101e 1774 case CMD_ELS_REQUEST64_CR:
10d4e957
JS		 1775 if (icmd->un.elsreq64.remoteID == ndlp->nlp_DID)
1776 return 1;
dea3101e
JB		 1777 case CMD_XMIT_ELS_RSP64_CX:
1778 if (iocb->context1 == (uint8_t *) ndlp)
2fe165b6 1779 return 1;
dea3101e 1780 }
a4bc3379 1781 } else if (pring->ringno == psli->extra_ring) {
dea3101e
JB		 1782
1783 } else if (pring->ringno == psli->fcp_ring) {
1784 /* Skip match check if waiting to relogin to FCP target */
1785 if ((ndlp->nlp_type & NLP_FCP_TARGET) &&
92d7f7b0 1786 (ndlp->nlp_flag & NLP_DELAY_TMO)) {
2fe165b6 1787 return 0;
dea3101e
JB		 1788 }
1789 if (icmd->ulpContext == (volatile ushort)ndlp->nlp_rpi) {
2fe165b6 1790 return 1;
dea3101e
JB		 1791 }
1792 } else if (pring->ringno == psli->next_ring) {
1793
1794 }
2fe165b6 1795 return 0;
dea3101e
JB		 1796}
1797
1798/*
1799 * Free resources / clean up outstanding I/Os
1800 * associated with nlp_rpi in the LPFC_NODELIST entry.
1801 */
1802static int
2e0fef85 1803lpfc_no_rpi(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
dea3101e 1804{
2534ba75 1805 LIST_HEAD(completions);
dea3101e
JB		 1806 struct lpfc_sli *psli;
1807 struct lpfc_sli_ring *pring;
1808 struct lpfc_iocbq *iocb, *next_iocb;
1809 IOCB_t *icmd;
1810 uint32_t rpi, i;
1811
92d7f7b0
JS		 1812 lpfc_fabric_abort_nport(ndlp);
1813
dea3101e
JB		 1814 /*
1815 * Everything that matches on txcmplq will be returned
1816 * by firmware with a no rpi error.
1817 */
1818 psli = &phba->sli;
1819 rpi = ndlp->nlp_rpi;
1820 if (rpi) {
1821 /* Now process each ring */
1822 for (i = 0; i < psli->num_rings; i++) {
1823 pring = &psli->ring[i];
1824
2e0fef85 1825 spin_lock_irq(&phba->hbalock);
dea3101e 1826 list_for_each_entry_safe(iocb, next_iocb, &pring->txq,
2e0fef85 1827 list) {
dea3101e
JB		 1828 /*
1829 * Check to see if iocb matches the nport we are
1830 * looking for
1831 */
92d7f7b0
JS		 1832 if ((lpfc_check_sli_ndlp(phba, pring, iocb,
1833 ndlp))) {
dea3101e
JB		 1834 /* It matches, so deque and call compl
1835 with an error */
2534ba75
JS		 1836 list_move_tail(&iocb->list,
1837 &completions);
dea3101e 1838 pring->txq_cnt--;
dea3101e
JB		 1839 }
1840 }
2e0fef85 1841 spin_unlock_irq(&phba->hbalock);
dea3101e
JB		 1842 }
1843 }
2534ba75
JS		 1844
1845 while (!list_empty(&completions)) {
1846 iocb = list_get_first(&completions, struct lpfc_iocbq, list);
92d7f7b0 1847 list_del_init(&iocb->list);
2534ba75 1848
2e0fef85
JS		 1849 if (!iocb->iocb_cmpl)
1850 lpfc_sli_release_iocbq(phba, iocb);
1851 else {
2534ba75
JS		 1852 icmd = &iocb->iocb;
1853 icmd->ulpStatus = IOSTAT_LOCAL_REJECT;
1854 icmd->un.ulpWord[4] = IOERR_SLI_ABORTED;
2e0fef85
JS		 1855 (iocb->iocb_cmpl)(phba, iocb, iocb);
1856 }
2534ba75
JS		 1857 }
1858
2fe165b6 1859 return 0;
dea3101e
JB		 1860}
1861
1862/*
1863 * Free rpi associated with LPFC_NODELIST entry.
1864 * This routine is called from lpfc_freenode(), when we are removing
1865 * a LPFC_NODELIST entry. It is also called if the driver initiates a
1866 * LOGO that completes successfully, and we are waiting to PLOGI back
1867 * to the remote NPort. In addition, it is called after we receive
1868 * and unsolicated ELS cmd, send back a rsp, the rsp completes and
1869 * we are waiting to PLOGI back to the remote NPort.
1870 */
1871int
2e0fef85 1872lpfc_unreg_rpi(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
dea3101e 1873{
2e0fef85
JS		 1874 struct lpfc_hba *phba = vport->phba;
1875 LPFC_MBOXQ_t *mbox;
dea3101e
JB		 1876 int rc;
1877
1878 if (ndlp->nlp_rpi) {
2e0fef85
JS		 1879 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1880 if (mbox) {
92d7f7b0 1881 lpfc_unreg_login(phba, vport->vpi, ndlp->nlp_rpi, mbox);
ed957684 1882 mbox->vport = vport;
92d7f7b0 1883 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
0b727fea 1884 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
dea3101e 1885 if (rc == MBX_NOT_FINISHED)
2e0fef85 1886 mempool_free(mbox, phba->mbox_mem_pool);
dea3101e 1887 }
dea3101e
JB		 1888 lpfc_no_rpi(phba, ndlp);
1889 ndlp->nlp_rpi = 0;
1890 return 1;
1891 }
1892 return 0;
1893}
1894
92d7f7b0
JS		 1895void
1896lpfc_unreg_all_rpis(struct lpfc_vport *vport)
1897{
1898 struct lpfc_hba *phba = vport->phba;
1899 LPFC_MBOXQ_t *mbox;
1900 int rc;
1901
1902 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1903 if (mbox) {
1904 lpfc_unreg_login(phba, vport->vpi, 0xffff, mbox);
1905 mbox->vport = vport;
1906 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
09372820
JS		 1907 mbox->context1 = NULL;
1908 rc = lpfc_sli_issue_mbox_wait(phba, mbox, LPFC_MBOX_TMO);
92d7f7b0
JS		 1909 if (rc == MBX_NOT_FINISHED) {
1910 mempool_free(mbox, phba->mbox_mem_pool);
1911 }
1912 }
1913}
1914
1915void
1916lpfc_unreg_default_rpis(struct lpfc_vport *vport)
1917{
1918 struct lpfc_hba *phba = vport->phba;
1919 LPFC_MBOXQ_t *mbox;
1920 int rc;
1921
1922 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1923 if (mbox) {
1924 lpfc_unreg_did(phba, vport->vpi, 0xffffffff, mbox);
1925 mbox->vport = vport;
1926 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
09372820
JS		 1927 mbox->context1 = NULL;
1928 rc = lpfc_sli_issue_mbox_wait(phba, mbox, LPFC_MBOX_TMO);
92d7f7b0 1929 if (rc == MBX_NOT_FINISHED) {
e8b62011
JS		 1930 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX | LOG_VPORT,
1931 "1815 Could not issue "
1932 "unreg_did (default rpis)\n");
92d7f7b0
JS		 1933 mempool_free(mbox, phba->mbox_mem_pool);
1934 }
1935 }
1936}
1937
dea3101e
JB		 1938/*
1939 * Free resources associated with LPFC_NODELIST entry
1940 * so it can be freed.
1941 */
1942static int
2e0fef85 1943lpfc_cleanup_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
dea3101e 1944{
2e0fef85
JS		 1945 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1946 struct lpfc_hba *phba = vport->phba;
1947 LPFC_MBOXQ_t *mb, *nextmb;
dea3101e 1948 struct lpfc_dmabuf *mp;
dea3101e
JB		 1949
1950 /* Cleanup node for NPort <nlp_DID> */
e8b62011
JS		 1951 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
1952 "0900 Cleanup node for NPort x%x "
1953 "Data: x%x x%x x%x\n",
1954 ndlp->nlp_DID, ndlp->nlp_flag,
1955 ndlp->nlp_state, ndlp->nlp_rpi);
2e0fef85 1956 lpfc_dequeue_node(vport, ndlp);
dea3101e 1957
dea3101e
JB		 1958 /* cleanup any ndlp on mbox q waiting for reglogin cmpl */
1959 if ((mb = phba->sli.mbox_active)) {
1960 if ((mb->mb.mbxCommand == MBX_REG_LOGIN64) &&
1961 (ndlp == (struct lpfc_nodelist *) mb->context2)) {
1962 mb->context2 = NULL;
1963 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
1964 }
1965 }
33ccf8d1 1966
2e0fef85 1967 spin_lock_irq(&phba->hbalock);
dea3101e
JB		 1968 list_for_each_entry_safe(mb, nextmb, &phba->sli.mboxq, list) {
1969 if ((mb->mb.mbxCommand == MBX_REG_LOGIN64) &&
92d7f7b0 1970 (ndlp == (struct lpfc_nodelist *) mb->context2)) {
dea3101e
JB		 1971 mp = (struct lpfc_dmabuf *) (mb->context1);
1972 if (mp) {
2e0fef85 1973 __lpfc_mbuf_free(phba, mp->virt, mp->phys);
dea3101e
JB		 1974 kfree(mp);
1975 }
1976 list_del(&mb->list);
1977 mempool_free(mb, phba->mbox_mem_pool);
329f9bc7 1978 lpfc_nlp_put(ndlp);
dea3101e
JB		 1979 }
1980 }
2e0fef85 1981 spin_unlock_irq(&phba->hbalock);
dea3101e 1982
07951076 1983 lpfc_els_abort(phba,ndlp);
2e0fef85 1984 spin_lock_irq(shost->host_lock);
c01f3208 1985 ndlp->nlp_flag &= ~NLP_DELAY_TMO;
2e0fef85 1986 spin_unlock_irq(shost->host_lock);
dea3101e 1987
5024ab17 1988 ndlp->nlp_last_elscmd = 0;
dea3101e
JB		 1989 del_timer_sync(&ndlp->nlp_delayfunc);
1990
dea3101e
JB		 1991 if (!list_empty(&ndlp->els_retry_evt.evt_listp))
1992 list_del_init(&ndlp->els_retry_evt.evt_listp);
92d7f7b0
JS		 1993 if (!list_empty(&ndlp->dev_loss_evt.evt_listp))
1994 list_del_init(&ndlp->dev_loss_evt.evt_listp);
dea3101e 1995
2e0fef85 1996 lpfc_unreg_rpi(vport, ndlp);
dea3101e 1997
2fe165b6 1998 return 0;
dea3101e
JB		 1999}
2000
2001/*
2002 * Check to see if we can free the nlp back to the freelist.
2003 * If we are in the middle of using the nlp in the discovery state
2004 * machine, defer the free till we reach the end of the state machine.
2005 */
329f9bc7 2006static void
2e0fef85 2007lpfc_nlp_remove(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
dea3101e 2008{
a8adb832 2009 struct lpfc_hba *phba = vport->phba;
1dcb58e5 2010 struct lpfc_rport_data *rdata;
a8adb832
JS		 2011 LPFC_MBOXQ_t *mbox;
2012 int rc;
dea3101e
JB		 2013
2014 if (ndlp->nlp_flag & NLP_DELAY_TMO) {
2e0fef85 2015 lpfc_cancel_retry_delay_tmo(vport, ndlp);
dea3101e
JB		 2016 }
2017
a8adb832
JS		 2018 if (ndlp->nlp_flag & NLP_DEFER_RM && !ndlp->nlp_rpi) {
2019 /* For this case we need to cleanup the default rpi
2020 * allocated by the firmware.
2021 */
2022 if ((mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL))
2023 != NULL) {
2024 rc = lpfc_reg_login(phba, vport->vpi, ndlp->nlp_DID,
2025 (uint8_t *) &vport->fc_sparam, mbox, 0);
2026 if (rc) {
2027 mempool_free(mbox, phba->mbox_mem_pool);
2028 }
2029 else {
2030 mbox->mbox_flag |= LPFC_MBX_IMED_UNREG;
2031 mbox->mbox_cmpl = lpfc_mbx_cmpl_dflt_rpi;
2032 mbox->vport = vport;
09372820 2033 mbox->context2 = NULL;
a8adb832
JS		 2034 rc =lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
2035 if (rc == MBX_NOT_FINISHED) {
2036 mempool_free(mbox, phba->mbox_mem_pool);
2037 }
2038 }
2039 }
2040 }
2041
2e0fef85 2042 lpfc_cleanup_node(vport, ndlp);
1dcb58e5 2043
2e0fef85 2044 /*
92d7f7b0
JS		 2045 * We can get here with a non-NULL ndlp->rport because when we
2046 * unregister a rport we don't break the rport/node linkage. So if we
2047 * do, make sure we don't leaving any dangling pointers behind.
2e0fef85 2048 */
92d7f7b0 2049 if (ndlp->rport) {
329f9bc7
JS		 2050 rdata = ndlp->rport->dd_data;
2051 rdata->pnode = NULL;
2052 ndlp->rport = NULL;
dea3101e 2053 }
dea3101e
JB		 2054}
2055
2056static int
2e0fef85
JS		 2057lpfc_matchdid(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2058 uint32_t did)
dea3101e 2059{
2e0fef85 2060 D_ID mydid, ndlpdid, matchdid;
dea3101e
JB		 2061
2062 if (did == Bcast_DID)
2fe165b6 2063 return 0;
dea3101e
JB		 2064
2065 if (ndlp->nlp_DID == 0) {
2fe165b6 2066 return 0;
dea3101e
JB		 2067 }
2068
2069 /* First check for Direct match */
2070 if (ndlp->nlp_DID == did)
2fe165b6 2071 return 1;
dea3101e
JB		 2072
2073 /* Next check for area/domain identically equals 0 match */
2e0fef85 2074 mydid.un.word = vport->fc_myDID;
dea3101e 2075 if ((mydid.un.b.domain == 0) && (mydid.un.b.area == 0)) {
2fe165b6 2076 return 0;
dea3101e
JB		 2077 }
2078
2079 matchdid.un.word = did;
2080 ndlpdid.un.word = ndlp->nlp_DID;
2081 if (matchdid.un.b.id == ndlpdid.un.b.id) {
2082 if ((mydid.un.b.domain == matchdid.un.b.domain) &&
2083 (mydid.un.b.area == matchdid.un.b.area)) {
2084 if ((ndlpdid.un.b.domain == 0) &&
2085 (ndlpdid.un.b.area == 0)) {
2086 if (ndlpdid.un.b.id)
2fe165b6 2087 return 1;
dea3101e 2088 }
2fe165b6 2089 return 0;
dea3101e
JB		 2090 }
2091
2092 matchdid.un.word = ndlp->nlp_DID;
2093 if ((mydid.un.b.domain == ndlpdid.un.b.domain) &&
2094 (mydid.un.b.area == ndlpdid.un.b.area)) {
2095 if ((matchdid.un.b.domain == 0) &&
2096 (matchdid.un.b.area == 0)) {
2097 if (matchdid.un.b.id)
2fe165b6 2098 return 1;
dea3101e
JB		 2099 }
2100 }
2101 }
2fe165b6 2102 return 0;
dea3101e
JB		 2103}
2104
685f0bf7 2105/* Search for a nodelist entry */
2e0fef85
JS		 2106static struct lpfc_nodelist *
2107__lpfc_findnode_did(struct lpfc_vport *vport, uint32_t did)
dea3101e 2108{
2fb9bd8b 2109 struct lpfc_nodelist *ndlp;
dea3101e
JB		 2110 uint32_t data1;
2111
2e0fef85
JS		 2112 list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
2113 if (lpfc_matchdid(vport, ndlp, did)) {
685f0bf7
JS		 2114 data1 = (((uint32_t) ndlp->nlp_state << 24) |
2115 ((uint32_t) ndlp->nlp_xri << 16) |
2116 ((uint32_t) ndlp->nlp_type << 8) |
2117 ((uint32_t) ndlp->nlp_rpi & 0xff));
e8b62011
JS		 2118 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
2119 "0929 FIND node DID "
2120 "Data: x%p x%x x%x x%x\n",
2121 ndlp, ndlp->nlp_DID,
2122 ndlp->nlp_flag, data1);
685f0bf7 2123 return ndlp;
dea3101e
JB		 2124 }
2125 }
66a9ed66 2126
dea3101e 2127 /* FIND node did <did> NOT FOUND */
e8b62011
JS		 2128 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
2129 "0932 FIND node did x%x NOT FOUND.\n", did);
dea3101e
JB		 2130 return NULL;
2131}
2132
2133struct lpfc_nodelist *
2e0fef85
JS		 2134lpfc_findnode_did(struct lpfc_vport *vport, uint32_t did)
2135{
2136 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2137 struct lpfc_nodelist *ndlp;
2138
2139 spin_lock_irq(shost->host_lock);
2140 ndlp = __lpfc_findnode_did(vport, did);
2141 spin_unlock_irq(shost->host_lock);
2142 return ndlp;
2143}
2144
2145struct lpfc_nodelist *
2146lpfc_setup_disc_node(struct lpfc_vport *vport, uint32_t did)
dea3101e 2147{
2e0fef85 2148 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
dea3101e 2149 struct lpfc_nodelist *ndlp;
dea3101e 2150
2e0fef85 2151 ndlp = lpfc_findnode_did(vport, did);
c9f8735b 2152 if (!ndlp) {
2e0fef85
JS		 2153 if ((vport->fc_flag & FC_RSCN_MODE) != 0 &&
2154 lpfc_rscn_payload_check(vport, did) == 0)
dea3101e
JB		 2155 return NULL;
2156 ndlp = (struct lpfc_nodelist *)
2e0fef85 2157 mempool_alloc(vport->phba->nlp_mem_pool, GFP_KERNEL);
dea3101e
JB		 2158 if (!ndlp)
2159 return NULL;
2e0fef85
JS		 2160 lpfc_nlp_init(vport, ndlp, did);
2161 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
2162 spin_lock_irq(shost->host_lock);
dea3101e 2163 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
2e0fef85 2164 spin_unlock_irq(shost->host_lock);
dea3101e
JB		 2165 return ndlp;
2166 }
2e0fef85
JS		 2167 if (vport->fc_flag & FC_RSCN_MODE) {
2168 if (lpfc_rscn_payload_check(vport, did)) {
87af33fe
JS		 2169 /* If we've already recieved a PLOGI from this NPort
2170 * we don't need to try to discover it again.
2171 */
2172 if (ndlp->nlp_flag & NLP_RCV_PLOGI)
2173 return NULL;
2174
2e0fef85 2175 spin_lock_irq(shost->host_lock);
dea3101e 2176 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
2e0fef85 2177 spin_unlock_irq(shost->host_lock);
c9f8735b
JW		 2178
2179 /* Since this node is marked for discovery,
2180 * delay timeout is not needed.
2181 */
fdcebe28 2182 if (ndlp->nlp_flag & NLP_DELAY_TMO)
2e0fef85 2183 lpfc_cancel_retry_delay_tmo(vport, ndlp);
071fbd3d 2184 } else
dea3101e 2185 ndlp = NULL;
2fe165b6 2186 } else {
87af33fe
JS		 2187 /* If we've already recieved a PLOGI from this NPort,
2188 * or we are already in the process of discovery on it,
2189 * we don't need to try to discover it again.
2190 */
685f0bf7 2191 if (ndlp->nlp_state == NLP_STE_ADISC_ISSUE ||
87af33fe
JS		 2192 ndlp->nlp_state == NLP_STE_PLOGI_ISSUE ||
2193 ndlp->nlp_flag & NLP_RCV_PLOGI)
dea3101e 2194 return NULL;
2e0fef85
JS		 2195 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
2196 spin_lock_irq(shost->host_lock);
dea3101e 2197 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
2e0fef85 2198 spin_unlock_irq(shost->host_lock);
dea3101e
JB		 2199 }
2200 return ndlp;
2201}
2202
2203/* Build a list of nodes to discover based on the loopmap */
2204void
2e0fef85 2205lpfc_disc_list_loopmap(struct lpfc_vport *vport)
dea3101e 2206{
2e0fef85 2207 struct lpfc_hba *phba = vport->phba;
dea3101e
JB		 2208 int j;
2209 uint32_t alpa, index;
2210
2e0fef85 2211 if (!lpfc_is_link_up(phba))
dea3101e 2212 return;
2e0fef85
JS		 2213
2214 if (phba->fc_topology != TOPOLOGY_LOOP)
dea3101e 2215 return;
dea3101e
JB		 2216
2217 /* Check for loop map present or not */
2218 if (phba->alpa_map[0]) {
2219 for (j = 1; j <= phba->alpa_map[0]; j++) {
2220 alpa = phba->alpa_map[j];
2e0fef85 2221 if (((vport->fc_myDID & 0xff) == alpa) || (alpa == 0))
dea3101e 2222 continue;
2e0fef85 2223 lpfc_setup_disc_node(vport, alpa);
dea3101e
JB		 2224 }
2225 } else {
2226 /* No alpamap, so try all alpa's */
2227 for (j = 0; j < FC_MAXLOOP; j++) {
2228 /* If cfg_scan_down is set, start from highest
2229 * ALPA (0xef) to lowest (0x1).
2230 */
3de2a653 2231 if (vport->cfg_scan_down)
dea3101e
JB		 2232 index = j;
2233 else
2234 index = FC_MAXLOOP - j - 1;
2235 alpa = lpfcAlpaArray[index];
2e0fef85 2236 if ((vport->fc_myDID & 0xff) == alpa)
dea3101e 2237 continue;
2e0fef85 2238 lpfc_setup_disc_node(vport, alpa);
dea3101e
JB		 2239 }
2240 }
2241 return;
2242}
2243
dea3101e 2244void
2e0fef85 2245lpfc_issue_clear_la(struct lpfc_hba *phba, struct lpfc_vport *vport)
dea3101e 2246{
dea3101e 2247 LPFC_MBOXQ_t *mbox;
2e0fef85
JS		 2248 struct lpfc_sli *psli = &phba->sli;
2249 struct lpfc_sli_ring *extra_ring = &psli->ring[psli->extra_ring];
2250 struct lpfc_sli_ring *fcp_ring = &psli->ring[psli->fcp_ring];
2251 struct lpfc_sli_ring *next_ring = &psli->ring[psli->next_ring];
2252 int rc;
2253
92d7f7b0
JS		 2254 /*
2255 * if it's not a physical port or if we already send
2256 * clear_la then don't send it.
2257 */
2258 if ((phba->link_state >= LPFC_CLEAR_LA) ||
2259 (vport->port_type != LPFC_PHYSICAL_PORT))
2260 return;
2261
2e0fef85
JS		 2262 /* Link up discovery */
2263 if ((mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL)) != NULL) {
2264 phba->link_state = LPFC_CLEAR_LA;
2265 lpfc_clear_la(phba, mbox);
2266 mbox->mbox_cmpl = lpfc_mbx_cmpl_clear_la;
2267 mbox->vport = vport;
0b727fea 2268 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
2e0fef85
JS		 2269 if (rc == MBX_NOT_FINISHED) {
2270 mempool_free(mbox, phba->mbox_mem_pool);
2271 lpfc_disc_flush_list(vport);
2272 extra_ring->flag &= ~LPFC_STOP_IOCB_EVENT;
2273 fcp_ring->flag &= ~LPFC_STOP_IOCB_EVENT;
2274 next_ring->flag &= ~LPFC_STOP_IOCB_EVENT;
92d7f7b0
JS		 2275 phba->link_state = LPFC_HBA_ERROR;
2276 }
2277 }
2278}
2279
2280/* Reg_vpi to tell firmware to resume normal operations */
2281void
2282lpfc_issue_reg_vpi(struct lpfc_hba *phba, struct lpfc_vport *vport)
2283{
2284 LPFC_MBOXQ_t *regvpimbox;
2285
2286 regvpimbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
2287 if (regvpimbox) {
2288 lpfc_reg_vpi(phba, vport->vpi, vport->fc_myDID, regvpimbox);
2289 regvpimbox->mbox_cmpl = lpfc_mbx_cmpl_reg_vpi;
2290 regvpimbox->vport = vport;
0b727fea 2291 if (lpfc_sli_issue_mbox(phba, regvpimbox, MBX_NOWAIT)
92d7f7b0
JS		 2292 == MBX_NOT_FINISHED) {
2293 mempool_free(regvpimbox, phba->mbox_mem_pool);
2e0fef85
JS		 2294 }
2295 }
2296}
2297
2298/* Start Link up / RSCN discovery on NPR nodes */
2299void
2300lpfc_disc_start(struct lpfc_vport *vport)
2301{
2302 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2303 struct lpfc_hba *phba = vport->phba;
685f0bf7 2304 uint32_t num_sent;
dea3101e 2305 uint32_t clear_la_pending;
685f0bf7 2306 int did_changed;
dea3101e 2307
2e0fef85 2308 if (!lpfc_is_link_up(phba))
dea3101e 2309 return;
2e0fef85
JS		 2310
2311 if (phba->link_state == LPFC_CLEAR_LA)
dea3101e
JB		 2312 clear_la_pending = 1;
2313 else
2314 clear_la_pending = 0;
2315
2e0fef85
JS		 2316 if (vport->port_state < LPFC_VPORT_READY)
2317 vport->port_state = LPFC_DISC_AUTH;
dea3101e 2318
2e0fef85
JS		 2319 lpfc_set_disctmo(vport);
2320
2321 if (vport->fc_prevDID == vport->fc_myDID)
dea3101e 2322 did_changed = 0;
2e0fef85 2323 else
dea3101e 2324 did_changed = 1;
2e0fef85
JS		 2325
2326 vport->fc_prevDID = vport->fc_myDID;
2327 vport->num_disc_nodes = 0;
dea3101e
JB		 2328
2329 /* Start Discovery state <hba_state> */
e8b62011
JS		 2330 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
2331 "0202 Start Discovery hba state x%x "
2332 "Data: x%x x%x x%x\n",
2333 vport->port_state, vport->fc_flag, vport->fc_plogi_cnt,
2334 vport->fc_adisc_cnt);
dea3101e
JB		 2335
2336 /* First do ADISCs - if any */
2e0fef85 2337 num_sent = lpfc_els_disc_adisc(vport);
dea3101e
JB		 2338
2339 if (num_sent)
2340 return;
2341
92d7f7b0
JS		 2342 /*
2343 * For SLI3, cmpl_reg_vpi will set port_state to READY, and
2344 * continue discovery.
2345 */
2346 if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
2347 !(vport->fc_flag & FC_RSCN_MODE)) {
2348 lpfc_issue_reg_vpi(phba, vport);
2349 return;
2350 }
2351
2352 /*
2353 * For SLI2, we need to set port_state to READY and continue
2354 * discovery.
2355 */
2e0fef85 2356 if (vport->port_state < LPFC_VPORT_READY && !clear_la_pending) {
dea3101e 2357 /* If we get here, there is nothing to ADISC */
92d7f7b0 2358 if (vport->port_type == LPFC_PHYSICAL_PORT)
2e0fef85 2359 lpfc_issue_clear_la(phba, vport);
2e0fef85 2360
92d7f7b0 2361 if (!(vport->fc_flag & FC_ABORT_DISCOVERY)) {
2e0fef85
JS		 2362 vport->num_disc_nodes = 0;
2363 /* go thru NPR nodes and issue ELS PLOGIs */
2364 if (vport->fc_npr_cnt)
2365 lpfc_els_disc_plogi(vport);
2366
2367 if (!vport->num_disc_nodes) {
2368 spin_lock_irq(shost->host_lock);
2369 vport->fc_flag &= ~FC_NDISC_ACTIVE;
2370 spin_unlock_irq(shost->host_lock);
92d7f7b0 2371 lpfc_can_disctmo(vport);
dea3101e
JB		 2372 }
2373 }
92d7f7b0 2374 vport->port_state = LPFC_VPORT_READY;
dea3101e
JB		 2375 } else {
2376 /* Next do PLOGIs - if any */
2e0fef85 2377 num_sent = lpfc_els_disc_plogi(vport);
dea3101e
JB		 2378
2379 if (num_sent)
2380 return;
2381
2e0fef85 2382 if (vport->fc_flag & FC_RSCN_MODE) {
dea3101e
JB		 2383 /* Check to see if more RSCNs came in while we
2384 * were processing this one.
2385 */
2e0fef85
JS		 2386 if ((vport->fc_rscn_id_cnt == 0) &&
2387 (!(vport->fc_flag & FC_RSCN_DISCOVERY))) {
2388 spin_lock_irq(shost->host_lock);
2389 vport->fc_flag &= ~FC_RSCN_MODE;
2390 spin_unlock_irq(shost->host_lock);
92d7f7b0 2391 lpfc_can_disctmo(vport);
2fe165b6 2392 } else
2e0fef85 2393 lpfc_els_handle_rscn(vport);
dea3101e
JB		 2394 }
2395 }
2396 return;
2397}
2398
2399/*
2400 * Ignore completion for all IOCBs on tx and txcmpl queue for ELS
2401 * ring the match the sppecified nodelist.
2402 */
2403static void
2e0fef85 2404lpfc_free_tx(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
dea3101e 2405{
2534ba75 2406 LIST_HEAD(completions);
dea3101e
JB		 2407 struct lpfc_sli *psli;
2408 IOCB_t *icmd;
2409 struct lpfc_iocbq *iocb, *next_iocb;
2410 struct lpfc_sli_ring *pring;
dea3101e
JB		 2411
2412 psli = &phba->sli;
2413 pring = &psli->ring[LPFC_ELS_RING];
2414
2415 /* Error matching iocb on txq or txcmplq
2416 * First check the txq.
2417 */
2e0fef85 2418 spin_lock_irq(&phba->hbalock);
dea3101e
JB		 2419 list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) {
2420 if (iocb->context1 != ndlp) {
2421 continue;
2422 }
2423 icmd = &iocb->iocb;
2424 if ((icmd->ulpCommand == CMD_ELS_REQUEST64_CR) ||
2425 (icmd->ulpCommand == CMD_XMIT_ELS_RSP64_CX)) {
2426
2534ba75 2427 list_move_tail(&iocb->list, &completions);
dea3101e 2428 pring->txq_cnt--;
dea3101e
JB		 2429 }
2430 }
2431
2432 /* Next check the txcmplq */
2433 list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq, list) {
2434 if (iocb->context1 != ndlp) {
2435 continue;
2436 }
2437 icmd = &iocb->iocb;
2e0fef85
JS		 2438 if (icmd->ulpCommand == CMD_ELS_REQUEST64_CR ||
2439 icmd->ulpCommand == CMD_XMIT_ELS_RSP64_CX) {
2534ba75
JS		 2440 lpfc_sli_issue_abort_iotag(phba, pring, iocb);
2441 }
2442 }
2e0fef85 2443 spin_unlock_irq(&phba->hbalock);
dea3101e 2444
2534ba75
JS		 2445 while (!list_empty(&completions)) {
2446 iocb = list_get_first(&completions, struct lpfc_iocbq, list);
92d7f7b0 2447 list_del_init(&iocb->list);
dea3101e 2448
2e0fef85
JS		 2449 if (!iocb->iocb_cmpl)
2450 lpfc_sli_release_iocbq(phba, iocb);
2451 else {
2534ba75
JS		 2452 icmd = &iocb->iocb;
2453 icmd->ulpStatus = IOSTAT_LOCAL_REJECT;
2454 icmd->un.ulpWord[4] = IOERR_SLI_ABORTED;
2455 (iocb->iocb_cmpl) (phba, iocb, iocb);
2e0fef85 2456 }
dea3101e 2457 }
dea3101e
JB		 2458}
2459
a6ababd2 2460static void
2e0fef85 2461lpfc_disc_flush_list(struct lpfc_vport *vport)
dea3101e
JB		 2462{
2463 struct lpfc_nodelist *ndlp, *next_ndlp;
2e0fef85 2464 struct lpfc_hba *phba = vport->phba;
dea3101e 2465
2e0fef85
JS		 2466 if (vport->fc_plogi_cnt || vport->fc_adisc_cnt) {
2467 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes,
685f0bf7
JS		 2468 nlp_listp) {
2469 if (ndlp->nlp_state == NLP_STE_PLOGI_ISSUE ||
2470 ndlp->nlp_state == NLP_STE_ADISC_ISSUE) {
2471 lpfc_free_tx(phba, ndlp);
685f0bf7 2472 }
dea3101e
JB		 2473 }
2474 }
dea3101e
JB		 2475}
2476
92d7f7b0
JS		 2477void
2478lpfc_cleanup_discovery_resources(struct lpfc_vport *vport)
2479{
2480 lpfc_els_flush_rscn(vport);
2481 lpfc_els_flush_cmd(vport);
2482 lpfc_disc_flush_list(vport);
2483}
2484
dea3101e
JB		 2485/*****************************************************************************/
2486/*
2487 * NAME: lpfc_disc_timeout
2488 *
2489 * FUNCTION: Fibre Channel driver discovery timeout routine.
2490 *
2491 * EXECUTION ENVIRONMENT: interrupt only
2492 *
2493 * CALLED FROM:
2494 * Timer function
2495 *
2496 * RETURNS:
2497 * none
2498 */
2499/*****************************************************************************/
2500void
2501lpfc_disc_timeout(unsigned long ptr)
2502{
2e0fef85
JS		 2503 struct lpfc_vport *vport = (struct lpfc_vport *) ptr;
2504 struct lpfc_hba *phba = vport->phba;
dea3101e
JB		 2505 unsigned long flags = 0;
2506
2507 if (unlikely(!phba))
2508 return;
2509
2e0fef85
JS		 2510 if ((vport->work_port_events & WORKER_DISC_TMO) == 0) {
2511 spin_lock_irqsave(&vport->work_port_lock, flags);
2512 vport->work_port_events |= WORKER_DISC_TMO;
2513 spin_unlock_irqrestore(&vport->work_port_lock, flags);
2514
92d7f7b0 2515 spin_lock_irqsave(&phba->hbalock, flags);
dea3101e 2516 if (phba->work_wait)
92d7f7b0
JS		 2517 lpfc_worker_wake_up(phba);
2518 spin_unlock_irqrestore(&phba->hbalock, flags);
dea3101e 2519 }
dea3101e
JB		 2520 return;
2521}
2522
2523static void
2e0fef85 2524lpfc_disc_timeout_handler(struct lpfc_vport *vport)
dea3101e 2525{
2e0fef85
JS		 2526 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2527 struct lpfc_hba *phba = vport->phba;
2528 struct lpfc_sli *psli = &phba->sli;
c9f8735b 2529 struct lpfc_nodelist *ndlp, *next_ndlp;
92d7f7b0 2530 LPFC_MBOXQ_t *initlinkmbox;
dea3101e
JB		 2531 int rc, clrlaerr = 0;
2532
2e0fef85 2533 if (!(vport->fc_flag & FC_DISC_TMO))
dea3101e
JB		 2534 return;
2535
2e0fef85
JS		 2536 spin_lock_irq(shost->host_lock);
2537 vport->fc_flag &= ~FC_DISC_TMO;
2538 spin_unlock_irq(shost->host_lock);
dea3101e 2539
858c9f6c
JS		 2540 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
2541 "disc timeout: state:x%x rtry:x%x flg:x%x",
2542 vport->port_state, vport->fc_ns_retry, vport->fc_flag);
2543
2e0fef85 2544 switch (vport->port_state) {
dea3101e
JB		 2545
2546 case LPFC_LOCAL_CFG_LINK:
2e0fef85
JS		 2547 /* port_state is identically LPFC_LOCAL_CFG_LINK while waiting for
2548 * FAN
2549 */
2550 /* FAN timeout */
e8b62011
JS		 2551 lpfc_printf_vlog(vport, KERN_WARNING, LOG_DISCOVERY,
2552 "0221 FAN timeout\n");
c9f8735b 2553 /* Start discovery by sending FLOGI, clean up old rpis */
2e0fef85 2554 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes,
685f0bf7
JS		 2555 nlp_listp) {
2556 if (ndlp->nlp_state != NLP_STE_NPR_NODE)
2557 continue;
c9f8735b
JW		 2558 if (ndlp->nlp_type & NLP_FABRIC) {
2559 /* Clean up the ndlp on Fabric connections */
2e0fef85 2560 lpfc_drop_node(vport, ndlp);
87af33fe 2561
2fe165b6 2562 } else if (!(ndlp->nlp_flag & NLP_NPR_ADISC)) {
c9f8735b
JW		 2563 /* Fail outstanding IO now since device
2564 * is marked for PLOGI.
2565 */
2e0fef85 2566 lpfc_unreg_rpi(vport, ndlp);
c9f8735b
JW		 2567 }
2568 }
92d7f7b0 2569 if (vport->port_state != LPFC_FLOGI) {
92d7f7b0 2570 lpfc_initial_flogi(vport);
0ff10d46 2571 return;
92d7f7b0 2572 }
dea3101e
JB		 2573 break;
2574
92d7f7b0 2575 case LPFC_FDISC:
dea3101e 2576 case LPFC_FLOGI:
2e0fef85 2577 /* port_state is identically LPFC_FLOGI while waiting for FLOGI cmpl */
dea3101e 2578 /* Initial FLOGI timeout */
e8b62011
JS		 2579 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
2580 "0222 Initial %s timeout\n",
87af33fe 2581 vport->vpi ? "FDISC" : "FLOGI");
dea3101e
JB		 2582
2583 /* Assume no Fabric and go on with discovery.
2584 * Check for outstanding ELS FLOGI to abort.
2585 */
2586
2587 /* FLOGI failed, so just use loop map to make discovery list */
2e0fef85 2588 lpfc_disc_list_loopmap(vport);
dea3101e
JB		 2589
2590 /* Start discovery */
2e0fef85 2591 lpfc_disc_start(vport);
dea3101e
JB		 2592 break;
2593
2594 case LPFC_FABRIC_CFG_LINK:
2595 /* hba_state is identically LPFC_FABRIC_CFG_LINK while waiting for
2596 NameServer login */
e8b62011
JS		 2597 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
2598 "0223 Timeout while waiting for "
2599 "NameServer login\n");
dea3101e 2600 /* Next look for NameServer ndlp */
2e0fef85 2601 ndlp = lpfc_findnode_did(vport, NameServer_DID);
dea3101e 2602 if (ndlp)
87af33fe
JS		 2603 lpfc_els_abort(phba, ndlp);
2604
2605 /* ReStart discovery */
2606 goto restart_disc;
dea3101e
JB		 2607
2608 case LPFC_NS_QRY:
2609 /* Check for wait for NameServer Rsp timeout */
e8b62011
JS		 2610 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
2611 "0224 NameServer Query timeout "
2612 "Data: x%x x%x\n",
2613 vport->fc_ns_retry, LPFC_MAX_NS_RETRY);
dea3101e 2614
92d7f7b0
JS		 2615 if (vport->fc_ns_retry < LPFC_MAX_NS_RETRY) {
2616 /* Try it one more time */
2617 vport->fc_ns_retry++;
2618 rc = lpfc_ns_cmd(vport, SLI_CTNS_GID_FT,
2619 vport->fc_ns_retry, 0);
2620 if (rc == 0)
2621 break;
dea3101e 2622 }
92d7f7b0 2623 vport->fc_ns_retry = 0;
dea3101e 2624
87af33fe 2625restart_disc:
92d7f7b0
JS		 2626 /*
2627 * Discovery is over.
2628 * set port_state to PORT_READY if SLI2.
2629 * cmpl_reg_vpi will set port_state to READY for SLI3.
2630 */
2631 if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)
2632 lpfc_issue_reg_vpi(phba, vport);
2633 else { /* NPIV Not enabled */
2634 lpfc_issue_clear_la(phba, vport);
2635 vport->port_state = LPFC_VPORT_READY;
dea3101e
JB		 2636 }
2637
2638 /* Setup and issue mailbox INITIALIZE LINK command */
2639 initlinkmbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
2640 if (!initlinkmbox) {
e8b62011
JS		 2641 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
2642 "0206 Device Discovery "
2643 "completion error\n");
2e0fef85 2644 phba->link_state = LPFC_HBA_ERROR;
dea3101e
JB		 2645 break;
2646 }
2647
2648 lpfc_linkdown(phba);
2649 lpfc_init_link(phba, initlinkmbox, phba->cfg_topology,
2650 phba->cfg_link_speed);
2651 initlinkmbox->mb.un.varInitLnk.lipsr_AL_PA = 0;
ed957684 2652 initlinkmbox->vport = vport;
92d7f7b0 2653 initlinkmbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
0b727fea 2654 rc = lpfc_sli_issue_mbox(phba, initlinkmbox, MBX_NOWAIT);
5b8bd0c9 2655 lpfc_set_loopback_flag(phba);
dea3101e
JB		 2656 if (rc == MBX_NOT_FINISHED)
2657 mempool_free(initlinkmbox, phba->mbox_mem_pool);
2658
2659 break;
2660
2661 case LPFC_DISC_AUTH:
2662 /* Node Authentication timeout */
e8b62011
JS		 2663 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
2664 "0227 Node Authentication timeout\n");
2e0fef85
JS		 2665 lpfc_disc_flush_list(vport);
2666
92d7f7b0
JS		 2667 /*
2668 * set port_state to PORT_READY if SLI2.
2669 * cmpl_reg_vpi will set port_state to READY for SLI3.
2670 */
2671 if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)
2672 lpfc_issue_reg_vpi(phba, vport);
2673 else { /* NPIV Not enabled */
2674 lpfc_issue_clear_la(phba, vport);
2675 vport->port_state = LPFC_VPORT_READY;
dea3101e
JB		 2676 }
2677 break;
2678
2e0fef85
JS		 2679 case LPFC_VPORT_READY:
2680 if (vport->fc_flag & FC_RSCN_MODE) {
e8b62011
JS		 2681 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
2682 "0231 RSCN timeout Data: x%x "
2683 "x%x\n",
2684 vport->fc_ns_retry, LPFC_MAX_NS_RETRY);
dea3101e
JB		 2685
2686 /* Cleanup any outstanding ELS commands */
2e0fef85 2687 lpfc_els_flush_cmd(vport);
dea3101e 2688
2e0fef85
JS		 2689 lpfc_els_flush_rscn(vport);
2690 lpfc_disc_flush_list(vport);
dea3101e
JB		 2691 }
2692 break;
2e0fef85 2693
92d7f7b0 2694 default:
e8b62011
JS		 2695 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
2696 "0229 Unexpected discovery timeout, "
2697 "vport State x%x\n", vport->port_state);
2e0fef85
JS		 2698 break;
2699 }
2700
2701 switch (phba->link_state) {
2702 case LPFC_CLEAR_LA:
92d7f7b0 2703 /* CLEAR LA timeout */
e8b62011
JS		 2704 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
2705 "0228 CLEAR LA timeout\n");
2e0fef85
JS		 2706 clrlaerr = 1;
2707 break;
2708
09372820
JS		 2709 case LPFC_LINK_UP:
2710 lpfc_issue_clear_la(phba, vport);
2711 /* Drop thru */
2e0fef85
JS		 2712 case LPFC_LINK_UNKNOWN:
2713 case LPFC_WARM_START:
2714 case LPFC_INIT_START:
2715 case LPFC_INIT_MBX_CMDS:
2716 case LPFC_LINK_DOWN:
2e0fef85 2717 case LPFC_HBA_ERROR:
e8b62011
JS		 2718 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
2719 "0230 Unexpected timeout, hba link "
2720 "state x%x\n", phba->link_state);
2e0fef85
JS		 2721 clrlaerr = 1;
2722 break;
92d7f7b0
JS		 2723
2724 case LPFC_HBA_READY:
2725 break;
dea3101e
JB		 2726 }
2727
2728 if (clrlaerr) {
2e0fef85 2729 lpfc_disc_flush_list(vport);
a4bc3379 2730 psli->ring[(psli->extra_ring)].flag &= ~LPFC_STOP_IOCB_EVENT;
dea3101e
JB		 2731 psli->ring[(psli->fcp_ring)].flag &= ~LPFC_STOP_IOCB_EVENT;
2732 psli->ring[(psli->next_ring)].flag &= ~LPFC_STOP_IOCB_EVENT;
2e0fef85 2733 vport->port_state = LPFC_VPORT_READY;
dea3101e
JB		 2734 }
2735
2736 return;
2737}
2738
dea3101e
JB		 2739/*
2740 * This routine handles processing a NameServer REG_LOGIN mailbox
2741 * command upon completion. It is setup in the LPFC_MBOXQ
2742 * as the completion routine when the command is
2743 * handed off to the SLI layer.
2744 */
2745void
2e0fef85 2746lpfc_mbx_cmpl_fdmi_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
dea3101e 2747{
2e0fef85
JS		 2748 MAILBOX_t *mb = &pmb->mb;
2749 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
2750 struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) pmb->context2;
2751 struct lpfc_vport *vport = pmb->vport;
dea3101e
JB		 2752
2753 pmb->context1 = NULL;
2754
dea3101e 2755 ndlp->nlp_rpi = mb->un.varWords[0];
dea3101e 2756 ndlp->nlp_type |= NLP_FABRIC;
2e0fef85 2757 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
dea3101e 2758
2e0fef85
JS		 2759 /*
2760 * Start issuing Fabric-Device Management Interface (FDMI) command to
2761 * 0xfffffa (FDMI well known port) or Delay issuing FDMI command if
2762 * fdmi-on=2 (supporting RPA/hostnmae)
dea3101e 2763 */
2e0fef85 2764
3de2a653 2765 if (vport->cfg_fdmi_on == 1)
2e0fef85
JS		 2766 lpfc_fdmi_cmd(vport, ndlp, SLI_MGMT_DHBA);
2767 else
2768 mod_timer(&vport->fc_fdmitmo, jiffies + HZ * 60);
dea3101e 2769
329f9bc7
JS		 2770 /* Mailbox took a reference to the node */
2771 lpfc_nlp_put(ndlp);
dea3101e
JB		 2772 lpfc_mbuf_free(phba, mp->virt, mp->phys);
2773 kfree(mp);
329f9bc7 2774 mempool_free(pmb, phba->mbox_mem_pool);
dea3101e
JB		 2775
2776 return;
2777}
2778
685f0bf7
JS		 2779static int
2780lpfc_filter_by_rpi(struct lpfc_nodelist *ndlp, void *param)
2781{
2782 uint16_t *rpi = param;
2783
2784 return ndlp->nlp_rpi == *rpi;
2785}
2786
2787static int
2788lpfc_filter_by_wwpn(struct lpfc_nodelist *ndlp, void *param)
2789{
2790 return memcmp(&ndlp->nlp_portname, param,
2791 sizeof(ndlp->nlp_portname)) == 0;
2792}
2793
a6ababd2 2794static struct lpfc_nodelist *
2e0fef85 2795__lpfc_find_node(struct lpfc_vport *vport, node_filter filter, void *param)
dea3101e 2796{
21568f53 2797 struct lpfc_nodelist *ndlp;
dea3101e 2798
2e0fef85 2799 list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
87af33fe 2800 if (filter(ndlp, param))
685f0bf7
JS		 2801 return ndlp;
2802 }
21568f53 2803 return NULL;
dea3101e
JB		 2804}
2805
a6ababd2 2806#if 0
685f0bf7
JS		 2807/*
2808 * Search node lists for a remote port matching filter criteria
92d7f7b0 2809 * Caller needs to hold host_lock before calling this routine.
685f0bf7
JS		 2810 */
2811struct lpfc_nodelist *
2e0fef85 2812lpfc_find_node(struct lpfc_vport *vport, node_filter filter, void *param)
685f0bf7 2813{
2e0fef85 2814 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
685f0bf7
JS		 2815 struct lpfc_nodelist *ndlp;
2816
2e0fef85
JS		 2817 spin_lock_irq(shost->host_lock);
2818 ndlp = __lpfc_find_node(vport, filter, param);
2819 spin_unlock_irq(shost->host_lock);
685f0bf7
JS		 2820 return ndlp;
2821}
a6ababd2 2822#endif /* 0 */
685f0bf7
JS		 2823
2824/*
2825 * This routine looks up the ndlp lists for the given RPI. If rpi found it
2e0fef85 2826 * returns the node list element pointer else return NULL.
685f0bf7
JS		 2827 */
2828struct lpfc_nodelist *
2e0fef85 2829__lpfc_findnode_rpi(struct lpfc_vport *vport, uint16_t rpi)
685f0bf7 2830{
2e0fef85 2831 return __lpfc_find_node(vport, lpfc_filter_by_rpi, &rpi);
685f0bf7
JS		 2832}
2833
a6ababd2 2834#if 0
2534ba75 2835struct lpfc_nodelist *
2e0fef85 2836lpfc_findnode_rpi(struct lpfc_vport *vport, uint16_t rpi)
2534ba75 2837{
2e0fef85 2838 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2534ba75
JS		 2839 struct lpfc_nodelist *ndlp;
2840
2e0fef85
JS		 2841 spin_lock_irq(shost->host_lock);
2842 ndlp = __lpfc_findnode_rpi(vport, rpi);
2843 spin_unlock_irq(shost->host_lock);
2534ba75
JS		 2844 return ndlp;
2845}
a6ababd2 2846#endif /* 0 */
2534ba75 2847
488d1469 2848/*
685f0bf7 2849 * This routine looks up the ndlp lists for the given WWPN. If WWPN found it
2e0fef85 2850 * returns the node element list pointer else return NULL.
488d1469
JS		 2851 */
2852struct lpfc_nodelist *
2e0fef85 2853lpfc_findnode_wwpn(struct lpfc_vport *vport, struct lpfc_name *wwpn)
488d1469 2854{
2e0fef85 2855 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
488d1469 2856 struct lpfc_nodelist *ndlp;
488d1469 2857
2e0fef85
JS		 2858 spin_lock_irq(shost->host_lock);
2859 ndlp = __lpfc_find_node(vport, lpfc_filter_by_wwpn, wwpn);
2860 spin_unlock_irq(shost->host_lock);
858c9f6c 2861 return ndlp;
488d1469
JS		 2862}
2863
dea3101e 2864void
2e0fef85
JS		 2865lpfc_nlp_init(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2866 uint32_t did)
dea3101e
JB		 2867{
2868 memset(ndlp, 0, sizeof (struct lpfc_nodelist));
dea3101e 2869 INIT_LIST_HEAD(&ndlp->els_retry_evt.evt_listp);
92d7f7b0 2870 INIT_LIST_HEAD(&ndlp->dev_loss_evt.evt_listp);
dea3101e
JB		 2871 init_timer(&ndlp->nlp_delayfunc);
2872 ndlp->nlp_delayfunc.function = lpfc_els_retry_delay;
2873 ndlp->nlp_delayfunc.data = (unsigned long)ndlp;
2874 ndlp->nlp_DID = did;
2e0fef85 2875 ndlp->vport = vport;
dea3101e 2876 ndlp->nlp_sid = NLP_NO_SID;
685f0bf7 2877 INIT_LIST_HEAD(&ndlp->nlp_listp);
329f9bc7 2878 kref_init(&ndlp->kref);
858c9f6c
JS		 2879
2880 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE,
2881 "node init: did:x%x",
2882 ndlp->nlp_DID, 0, 0);
2883
dea3101e
JB		 2884 return;
2885}
329f9bc7 2886
98c9ea5c
JS		 2887/* This routine releases all resources associated with a specifc NPort's ndlp
2888 * and mempool_free's the nodelist.
2889 */
311464ec 2890static void
329f9bc7
JS		 2891lpfc_nlp_release(struct kref *kref)
2892{
2893 struct lpfc_nodelist *ndlp = container_of(kref, struct lpfc_nodelist,
2894 kref);
858c9f6c
JS		 2895
2896 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
2897 "node release: did:x%x flg:x%x type:x%x",
2898 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type);
2899
2e0fef85
JS		 2900 lpfc_nlp_remove(ndlp->vport, ndlp);
2901 mempool_free(ndlp, ndlp->vport->phba->nlp_mem_pool);
329f9bc7
JS		 2902}
2903
98c9ea5c
JS		 2904/* This routine bumps the reference count for a ndlp structure to ensure
2905 * that one discovery thread won't free a ndlp while another discovery thread
2906 * is using it.
2907 */
329f9bc7
JS		 2908struct lpfc_nodelist *
2909lpfc_nlp_get(struct lpfc_nodelist *ndlp)
2910{
98c9ea5c
JS		 2911 if (ndlp) {
2912 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
2913 "node get: did:x%x flg:x%x refcnt:x%x",
2914 ndlp->nlp_DID, ndlp->nlp_flag,
2915 atomic_read(&ndlp->kref.refcount));
329f9bc7 2916 kref_get(&ndlp->kref);
98c9ea5c 2917 }
329f9bc7
JS		 2918 return ndlp;
2919}
2920
98c9ea5c
JS		 2921
2922/* This routine decrements the reference count for a ndlp structure. If the
2923 * count goes to 0, this indicates the the associated nodelist should be freed.
2924 */
329f9bc7
JS		 2925int
2926lpfc_nlp_put(struct lpfc_nodelist *ndlp)
2927{
98c9ea5c
JS		 2928 if (ndlp) {
2929 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
2930 "node put: did:x%x flg:x%x refcnt:x%x",
2931 ndlp->nlp_DID, ndlp->nlp_flag,
2932 atomic_read(&ndlp->kref.refcount));
2933 }
329f9bc7
JS		 2934 return ndlp ? kref_put(&ndlp->kref, lpfc_nlp_release) : 0;
2935}
98c9ea5c
JS		 2936
2937/* This routine free's the specified nodelist if it is not in use
2938 * by any other discovery thread. This routine returns 1 if the ndlp
2939 * is not being used by anyone and has been freed. A return value of
2940 * 0 indicates it is being used by another discovery thread and the
2941 * refcount is left unchanged.
2942 */
2943int
2944lpfc_nlp_not_used(struct lpfc_nodelist *ndlp)
2945{
2946 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
2947 "node not used: did:x%x flg:x%x refcnt:x%x",
2948 ndlp->nlp_DID, ndlp->nlp_flag,
2949 atomic_read(&ndlp->kref.refcount));
2950
2951 if (atomic_read(&ndlp->kref.refcount) == 1) {
2952 lpfc_nlp_put(ndlp);
2953 return 1;
2954 }
2955 return 0;
2956}
2957
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