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[SCSI] lpfc 8.2.7 : Rework the worker thread
[deliverable/linux.git] / drivers / scsi / lpfc / lpfc_hbadisc.c
CommitLineData
dea3101e 1/*******************************************************************
2 * This file is part of the Emulex Linux Device Driver for *
c44ce173 3 * Fibre Channel Host Bus Adapters. *
e47c9093 4 * Copyright (C) 2004-2008 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 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 20 *******************************************************************/
21
dea3101e 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 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 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
58da1ffb 72 if (!ndlp || !NLP_CHK_NODE_ACT(ndlp)) {
c01f3208
JS		 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 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;
58da1ffb 117 if (!ndlp || !NLP_CHK_NODE_ACT(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);
fa4066b6
JS		 152 /* We need to hold the node by incrementing the reference
153 * count until this queued work is done
154 */
155 evtp->evt_arg1 = lpfc_nlp_get(ndlp);
5e9d9b82
JS		 156 if (evtp->evt_arg1) {
157 evtp->evt = LPFC_EVT_DEV_LOSS;
158 list_add_tail(&evtp->evt_listp, &phba->work_list);
159 lpfc_worker_wake_up(phba);
160 }
858c9f6c
JS		 161 spin_unlock_irq(&phba->hbalock);
162
858c9f6c
JS		 163 return;
164}
165
166/*
167 * This function is called from the worker thread when dev_loss_tmo
168 * expire.
169 */
a6ababd2 170static void
858c9f6c
JS		 171lpfc_dev_loss_tmo_handler(struct lpfc_nodelist *ndlp)
172{
173 struct lpfc_rport_data *rdata;
174 struct fc_rport *rport;
175 struct lpfc_vport *vport;
176 struct lpfc_hba *phba;
177 uint8_t *name;
87af33fe
JS		 178 int put_node;
179 int put_rport;
858c9f6c
JS		 180 int warn_on = 0;
181
182 rport = ndlp->rport;
183
184 if (!rport)
185 return;
186
187 rdata = rport->dd_data;
188 name = (uint8_t *) &ndlp->nlp_portname;
189 vport = ndlp->vport;
190 phba = vport->phba;
191
192 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
193 "rport devlosstmo:did:x%x type:x%x id:x%x",
194 ndlp->nlp_DID, ndlp->nlp_type, rport->scsi_target_id);
195
a8adb832
JS		 196 /* Don't defer this if we are in the process of deleting the vport
197 * or unloading the driver. The unload will cleanup the node
198 * appropriately we just need to cleanup the ndlp rport info here.
199 */
200 if (vport->load_flag & FC_UNLOADING) {
09372820
JS		 201 if (ndlp->nlp_sid != NLP_NO_SID) {
202 /* flush the target */
203 lpfc_sli_abort_iocb(vport,
204 &phba->sli.ring[phba->sli.fcp_ring],
205 ndlp->nlp_sid, 0, LPFC_CTX_TGT);
206 }
a8adb832
JS		 207 put_node = rdata->pnode != NULL;
208 put_rport = ndlp->rport != NULL;
209 rdata->pnode = NULL;
210 ndlp->rport = NULL;
211 if (put_node)
212 lpfc_nlp_put(ndlp);
213 if (put_rport)
214 put_device(&rport->dev);
215 return;
216 }
217
218 if (ndlp->nlp_state == NLP_STE_MAPPED_NODE)
858c9f6c
JS		 219 return;
220
92d7f7b0
JS		 221 if (ndlp->nlp_type & NLP_FABRIC) {
222 /* We will clean up these Nodes in linkup */
223 put_node = rdata->pnode != NULL;
224 put_rport = ndlp->rport != NULL;
225 rdata->pnode = NULL;
226 ndlp->rport = NULL;
227 if (put_node)
228 lpfc_nlp_put(ndlp);
229 if (put_rport)
230 put_device(&rport->dev);
82085718 231 return;
92d7f7b0 232 }
82085718 233
dea3101e 234 if (ndlp->nlp_sid != NLP_NO_SID) {
6e8215e4 235 warn_on = 1;
dea3101e 236 /* flush the target */
51ef4c26
JS		 237 lpfc_sli_abort_iocb(vport, &phba->sli.ring[phba->sli.fcp_ring],
238 ndlp->nlp_sid, 0, LPFC_CTX_TGT);
dea3101e 239 }
2e0fef85 240 if (vport->load_flag & FC_UNLOADING)
c01f3208
JS		 241 warn_on = 0;
242
6e8215e4 243 if (warn_on) {
e8b62011
JS		 244 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
245 "0203 Devloss timeout on "
58da1ffb
JS		 246 "WWPN %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x "
247 "NPort x%06x Data: x%x x%x x%x\n",
e8b62011
JS		 248 *name, *(name+1), *(name+2), *(name+3),
249 *(name+4), *(name+5), *(name+6), *(name+7),
250 ndlp->nlp_DID, ndlp->nlp_flag,
251 ndlp->nlp_state, ndlp->nlp_rpi);
6e8215e4 252 } else {
e8b62011
JS		 253 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
254 "0204 Devloss timeout on "
58da1ffb
JS		 255 "WWPN %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x "
256 "NPort x%06x Data: x%x x%x x%x\n",
e8b62011
JS		 257 *name, *(name+1), *(name+2), *(name+3),
258 *(name+4), *(name+5), *(name+6), *(name+7),
259 ndlp->nlp_DID, ndlp->nlp_flag,
260 ndlp->nlp_state, ndlp->nlp_rpi);
6e8215e4
JSEC		 261 }
262
87af33fe
JS		 263 put_node = rdata->pnode != NULL;
264 put_rport = ndlp->rport != NULL;
265 rdata->pnode = NULL;
266 ndlp->rport = NULL;
267 if (put_node)
268 lpfc_nlp_put(ndlp);
269 if (put_rport)
270 put_device(&rport->dev);
271
2e0fef85 272 if (!(vport->load_flag & FC_UNLOADING) &&
1dcb58e5 273 !(ndlp->nlp_flag & NLP_DELAY_TMO) &&
82085718 274 !(ndlp->nlp_flag & NLP_NPR_2B_DISC) &&
e47c9093 275 (ndlp->nlp_state != NLP_STE_UNMAPPED_NODE))
2e0fef85 276 lpfc_disc_state_machine(vport, ndlp, NULL, NLP_EVT_DEVICE_RM);
92d7f7b0 277}
c01f3208 278
dea3101e 279static void
2e0fef85 280lpfc_work_list_done(struct lpfc_hba *phba)
dea3101e 281{
282 struct lpfc_work_evt *evtp = NULL;
283 struct lpfc_nodelist *ndlp;
284 int free_evt;
285
2e0fef85
JS		 286 spin_lock_irq(&phba->hbalock);
287 while (!list_empty(&phba->work_list)) {
dea3101e 288 list_remove_head((&phba->work_list), evtp, typeof(*evtp),
289 evt_listp);
2e0fef85 290 spin_unlock_irq(&phba->hbalock);
dea3101e 291 free_evt = 1;
2fe165b6 292 switch (evtp->evt) {
dea3101e 293 case LPFC_EVT_ELS_RETRY:
2e0fef85 294 ndlp = (struct lpfc_nodelist *) (evtp->evt_arg1);
dea3101e 295 lpfc_els_retry_delay_handler(ndlp);
92d7f7b0 296 free_evt = 0; /* evt is part of ndlp */
fa4066b6
JS		 297 /* decrement the node reference count held
298 * for this queued work
299 */
300 lpfc_nlp_put(ndlp);
dea3101e 301 break;
858c9f6c
JS		 302 case LPFC_EVT_DEV_LOSS:
303 ndlp = (struct lpfc_nodelist *)(evtp->evt_arg1);
858c9f6c
JS		 304 lpfc_dev_loss_tmo_handler(ndlp);
305 free_evt = 0;
fa4066b6
JS		 306 /* decrement the node reference count held for
307 * this queued work
308 */
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 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 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 356
357}
358
311464ec 359static void
2e0fef85 360lpfc_work_done(struct lpfc_hba *phba)
dea3101e 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 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 374 lpfc_handle_eratt(phba);
375
2fe165b6 376 if (ha_copy & HA_MBATT)
dea3101e 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;
58da1ffb 394 spin_lock_irq(&vport->work_port_lock);
51ef4c26 395 work_port_events = vport->work_port_events;
58da1ffb
JS		 396 vport->work_port_events &= ~work_port_events;
397 spin_unlock_irq(&vport->work_port_lock);
549e55cd 398 if (work_port_events & WORKER_DISC_TMO)
51ef4c26 399 lpfc_disc_timeout_handler(vport);
549e55cd 400 if (work_port_events & WORKER_ELS_TMO)
51ef4c26 401 lpfc_els_timeout_handler(vport);
549e55cd
JS		 402 if (work_port_events & WORKER_HB_TMO)
403 lpfc_hb_timeout_handler(phba);
404 if (work_port_events & WORKER_MBOX_TMO)
405 lpfc_mbox_timeout_handler(phba);
406 if (work_port_events & WORKER_FABRIC_BLOCK_TMO)
407 lpfc_unblock_fabric_iocbs(phba);
408 if (work_port_events & WORKER_FDMI_TMO)
51ef4c26 409 lpfc_fdmi_timeout_handler(vport);
549e55cd
JS		 410 if (work_port_events & WORKER_RAMP_DOWN_QUEUE)
411 lpfc_ramp_down_queue_handler(phba);
412 if (work_port_events & WORKER_RAMP_UP_QUEUE)
413 lpfc_ramp_up_queue_handler(phba);
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 423 pring->flag |= LPFC_DEFERRED_RING_EVENT;
5e9d9b82
JS		 424 /* Set the lpfc data pending flag */
425 set_bit(LPFC_DATA_READY, &phba->data_flags);
858c9f6c 426 } else {
58da1ffb 427 pring->flag &= ~LPFC_DEFERRED_RING_EVENT;
858c9f6c
JS		 428 lpfc_sli_handle_slow_ring_event(phba, pring,
429 (status &
430 HA_RXMASK));
858c9f6c
JS		 431 }
432 /*
433 * Turn on Ring interrupts
434 */
435 spin_lock_irq(&phba->hbalock);
436 control = readl(phba->HCregaddr);
437 if (!(control & (HC_R0INT_ENA << LPFC_ELS_RING))) {
a58cbd52
JS		 438 lpfc_debugfs_slow_ring_trc(phba,
439 "WRK Enable ring: cntl:x%x hacopy:x%x",
440 control, ha_copy, 0);
441
858c9f6c 442 control |= (HC_R0INT_ENA << LPFC_ELS_RING);
dea3101e 443 writel(control, phba->HCregaddr);
444 readl(phba->HCregaddr); /* flush */
dea3101e 445 }
a58cbd52
JS		 446 else {
447 lpfc_debugfs_slow_ring_trc(phba,
448 "WRK Ring ok: cntl:x%x hacopy:x%x",
449 control, ha_copy, 0);
450 }
858c9f6c 451 spin_unlock_irq(&phba->hbalock);
dea3101e 452 }
2e0fef85 453 lpfc_work_list_done(phba);
dea3101e 454}
455
dea3101e 456int
457lpfc_do_work(void *p)
458{
459 struct lpfc_hba *phba = p;
460 int rc;
dea3101e 461
462 set_user_nice(current, -20);
5e9d9b82 463 phba->data_flags = 0;
dea3101e 464
465 while (1) {
5e9d9b82
JS		 466 /* wait and check worker queue activities */
467 rc = wait_event_interruptible(phba->work_waitq,
468 (test_and_clear_bit(LPFC_DATA_READY,
469 &phba->data_flags)
470 || kthread_should_stop()));
dea3101e 471 BUG_ON(rc);
472
473 if (kthread_should_stop())
474 break;
475
5e9d9b82 476 /* Attend pending lpfc data processing */
dea3101e 477 lpfc_work_done(phba);
dea3101e 478 }
dea3101e 479 return 0;
480}
481
482/*
483 * This is only called to handle FC worker events. Since this a rare
484 * occurance, we allocate a struct lpfc_work_evt structure here instead of
485 * embedding it in the IOCB.
486 */
487int
2e0fef85 488lpfc_workq_post_event(struct lpfc_hba *phba, void *arg1, void *arg2,
dea3101e 489 uint32_t evt)
490{
491 struct lpfc_work_evt *evtp;
ed957684 492 unsigned long flags;
dea3101e 493
494 /*
495 * All Mailbox completions and LPFC_ELS_RING rcv ring IOCB events will
496 * be queued to worker thread for processing
497 */
92d7f7b0 498 evtp = kmalloc(sizeof(struct lpfc_work_evt), GFP_ATOMIC);
dea3101e 499 if (!evtp)
500 return 0;
501
502 evtp->evt_arg1 = arg1;
503 evtp->evt_arg2 = arg2;
504 evtp->evt = evt;
505
ed957684 506 spin_lock_irqsave(&phba->hbalock, flags);
071fbd3d 507 list_add_tail(&evtp->evt_listp, &phba->work_list);
ed957684 508 spin_unlock_irqrestore(&phba->hbalock, flags);
dea3101e 509
5e9d9b82
JS		 510 lpfc_worker_wake_up(phba);
511
dea3101e 512 return 1;
513}
514
92d7f7b0
JS		 515void
516lpfc_cleanup_rpis(struct lpfc_vport *vport, int remove)
517{
09372820 518 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
92d7f7b0
JS		 519 struct lpfc_hba *phba = vport->phba;
520 struct lpfc_nodelist *ndlp, *next_ndlp;
521 int rc;
522
523 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) {
e47c9093
JS		 524 if (!NLP_CHK_NODE_ACT(ndlp))
525 continue;
92d7f7b0
JS		 526 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
527 continue;
98c9ea5c
JS		 528 if ((phba->sli3_options & LPFC_SLI3_VPORT_TEARDOWN) ||
529 ((vport->port_type == LPFC_NPIV_PORT) &&
530 (ndlp->nlp_DID == NameServer_DID)))
92d7f7b0
JS		 531 lpfc_unreg_rpi(vport, ndlp);
532
533 /* Leave Fabric nodes alone on link down */
534 if (!remove && ndlp->nlp_type & NLP_FABRIC)
535 continue;
536 rc = lpfc_disc_state_machine(vport, ndlp, NULL,
537 remove
538 ? NLP_EVT_DEVICE_RM
539 : NLP_EVT_DEVICE_RECOVERY);
540 }
541 if (phba->sli3_options & LPFC_SLI3_VPORT_TEARDOWN) {
542 lpfc_mbx_unreg_vpi(vport);
09372820 543 spin_lock_irq(shost->host_lock);
92d7f7b0 544 vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
09372820 545 spin_unlock_irq(shost->host_lock);
92d7f7b0
JS		 546 }
547}
548
87af33fe 549void
98c9ea5c 550lpfc_port_link_failure(struct lpfc_vport *vport)
92d7f7b0 551{
92d7f7b0
JS		 552 /* Cleanup any outstanding RSCN activity */
553 lpfc_els_flush_rscn(vport);
554
555 /* Cleanup any outstanding ELS commands */
556 lpfc_els_flush_cmd(vport);
557
558 lpfc_cleanup_rpis(vport, 0);
559
92d7f7b0
JS		 560 /* Turn off discovery timer if its running */
561 lpfc_can_disctmo(vport);
562}
563
98c9ea5c
JS		 564static void
565lpfc_linkdown_port(struct lpfc_vport *vport)
566{
567 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
568
569 fc_host_post_event(shost, fc_get_event_number(), FCH_EVT_LINKDOWN, 0);
570
571 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
572 "Link Down: state:x%x rtry:x%x flg:x%x",
573 vport->port_state, vport->fc_ns_retry, vport->fc_flag);
574
575 lpfc_port_link_failure(vport);
576
577}
578
dea3101e 579int
685f0bf7 580lpfc_linkdown(struct lpfc_hba *phba)
dea3101e 581{
2e0fef85
JS		 582 struct lpfc_vport *vport = phba->pport;
583 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
549e55cd 584 struct lpfc_vport **vports;
685f0bf7 585 LPFC_MBOXQ_t *mb;
549e55cd 586 int i;
dea3101e 587
3163f725 588 if (phba->link_state == LPFC_LINK_DOWN)
2e0fef85 589 return 0;
2e0fef85 590 spin_lock_irq(&phba->hbalock);
92d7f7b0 591 if (phba->link_state > LPFC_LINK_DOWN) {
2e0fef85 592 phba->link_state = LPFC_LINK_DOWN;
92d7f7b0
JS		 593 phba->pport->fc_flag &= ~FC_LBIT;
594 }
2e0fef85 595 spin_unlock_irq(&phba->hbalock);
549e55cd
JS		 596 vports = lpfc_create_vport_work_array(phba);
597 if (vports != NULL)
09372820 598 for(i = 0; i <= phba->max_vpi && vports[i] != NULL; i++) {
549e55cd
JS		 599 /* Issue a LINK DOWN event to all nodes */
600 lpfc_linkdown_port(vports[i]);
601 }
09372820 602 lpfc_destroy_vport_work_array(phba, vports);
dea3101e 603 /* Clean up any firmware default rpi's */
2e0fef85
JS		 604 mb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
605 if (mb) {
92d7f7b0 606 lpfc_unreg_did(phba, 0xffff, 0xffffffff, mb);
ed957684 607 mb->vport = vport;
2e0fef85 608 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
0b727fea 609 if (lpfc_sli_issue_mbox(phba, mb, MBX_NOWAIT)
dea3101e 610 == MBX_NOT_FINISHED) {
2e0fef85 611 mempool_free(mb, phba->mbox_mem_pool);
dea3101e 612 }
613 }
614
dea3101e 615 /* Setup myDID for link up if we are in pt2pt mode */
92d7f7b0
JS		 616 if (phba->pport->fc_flag & FC_PT2PT) {
617 phba->pport->fc_myDID = 0;
2e0fef85
JS		 618 mb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
619 if (mb) {
dea3101e 620 lpfc_config_link(phba, mb);
92d7f7b0 621 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
ed957684 622 mb->vport = vport;
0b727fea 623 if (lpfc_sli_issue_mbox(phba, mb, MBX_NOWAIT)
dea3101e 624 == MBX_NOT_FINISHED) {
2e0fef85 625 mempool_free(mb, phba->mbox_mem_pool);
dea3101e 626 }
627 }
2e0fef85 628 spin_lock_irq(shost->host_lock);
92d7f7b0 629 phba->pport->fc_flag &= ~(FC_PT2PT | FC_PT2PT_PLOGI);
2e0fef85 630 spin_unlock_irq(shost->host_lock);
dea3101e 631 }
2e0fef85 632
92d7f7b0
JS		 633 return 0;
634}
dea3101e 635
92d7f7b0
JS		 636static void
637lpfc_linkup_cleanup_nodes(struct lpfc_vport *vport)
638{
639 struct lpfc_nodelist *ndlp;
dea3101e 640
92d7f7b0 641 list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
e47c9093
JS		 642 if (!NLP_CHK_NODE_ACT(ndlp))
643 continue;
92d7f7b0
JS		 644 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
645 continue;
92d7f7b0 646 if (ndlp->nlp_type & NLP_FABRIC) {
e47c9093
JS		 647 /* On Linkup its safe to clean up the ndlp
648 * from Fabric connections.
649 */
92d7f7b0
JS		 650 if (ndlp->nlp_DID != Fabric_DID)
651 lpfc_unreg_rpi(vport, ndlp);
652 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
653 } else if (!(ndlp->nlp_flag & NLP_NPR_ADISC)) {
e47c9093
JS		 654 /* Fail outstanding IO now since device is
655 * marked for PLOGI.
656 */
92d7f7b0
JS		 657 lpfc_unreg_rpi(vport, ndlp);
658 }
659 }
dea3101e 660}
661
92d7f7b0
JS		 662static void
663lpfc_linkup_port(struct lpfc_vport *vport)
dea3101e 664{
92d7f7b0 665 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
92d7f7b0
JS		 666 struct lpfc_hba *phba = vport->phba;
667
668 if ((vport->load_flag & FC_UNLOADING) != 0)
669 return;
670
858c9f6c
JS		 671 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
672 "Link Up: top:x%x speed:x%x flg:x%x",
673 phba->fc_topology, phba->fc_linkspeed, phba->link_flag);
674
92d7f7b0
JS		 675 /* If NPIV is not enabled, only bring the physical port up */
676 if (!(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
677 (vport != phba->pport))
678 return;
dea3101e 679
2e0fef85 680 fc_host_post_event(shost, fc_get_event_number(), FCH_EVT_LINKUP, 0);
d2873e4c 681
2e0fef85 682 spin_lock_irq(shost->host_lock);
2e0fef85
JS		 683 vport->fc_flag &= ~(FC_PT2PT | FC_PT2PT_PLOGI | FC_ABORT_DISCOVERY |
684 FC_RSCN_MODE | FC_NLP_MORE | FC_RSCN_DISCOVERY);
685 vport->fc_flag |= FC_NDISC_ACTIVE;
686 vport->fc_ns_retry = 0;
687 spin_unlock_irq(shost->host_lock);
dea3101e 688
92d7f7b0
JS		 689 if (vport->fc_flag & FC_LBIT)
690 lpfc_linkup_cleanup_nodes(vport);
dea3101e 691
92d7f7b0
JS		 692}
693
694static int
695lpfc_linkup(struct lpfc_hba *phba)
696{
549e55cd
JS		 697 struct lpfc_vport **vports;
698 int i;
92d7f7b0
JS		 699
700 phba->link_state = LPFC_LINK_UP;
701
702 /* Unblock fabric iocbs if they are blocked */
703 clear_bit(FABRIC_COMANDS_BLOCKED, &phba->bit_flags);
704 del_timer_sync(&phba->fabric_block_timer);
705
549e55cd
JS		 706 vports = lpfc_create_vport_work_array(phba);
707 if (vports != NULL)
09372820 708 for(i = 0; i <= phba->max_vpi && vports[i] != NULL; i++)
549e55cd 709 lpfc_linkup_port(vports[i]);
09372820 710 lpfc_destroy_vport_work_array(phba, vports);
92d7f7b0
JS		 711 if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)
712 lpfc_issue_clear_la(phba, phba->pport);
dea3101e 713
714 return 0;
715}
716
717/*
718 * This routine handles processing a CLEAR_LA mailbox
719 * command upon completion. It is setup in the LPFC_MBOXQ
720 * as the completion routine when the command is
721 * handed off to the SLI layer.
722 */
a6ababd2 723static void
2e0fef85 724lpfc_mbx_cmpl_clear_la(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
dea3101e 725{
2e0fef85
JS		 726 struct lpfc_vport *vport = pmb->vport;
727 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
728 struct lpfc_sli *psli = &phba->sli;
729 MAILBOX_t *mb = &pmb->mb;
dea3101e 730 uint32_t control;
731
dea3101e 732 /* Since we don't do discovery right now, turn these off here */
a4bc3379 733 psli->ring[psli->extra_ring].flag &= ~LPFC_STOP_IOCB_EVENT;
dea3101e 734 psli->ring[psli->fcp_ring].flag &= ~LPFC_STOP_IOCB_EVENT;
735 psli->ring[psli->next_ring].flag &= ~LPFC_STOP_IOCB_EVENT;
736
737 /* Check for error */
738 if ((mb->mbxStatus) && (mb->mbxStatus != 0x1601)) {
92d7f7b0 739 /* CLEAR_LA mbox error <mbxStatus> state <hba_state> */
e8b62011
JS		 740 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
741 "0320 CLEAR_LA mbxStatus error x%x hba "
742 "state x%x\n",
743 mb->mbxStatus, vport->port_state);
2e0fef85 744 phba->link_state = LPFC_HBA_ERROR;
dea3101e 745 goto out;
746 }
747
92d7f7b0
JS		 748 if (vport->port_type == LPFC_PHYSICAL_PORT)
749 phba->link_state = LPFC_HBA_READY;
750
751 spin_lock_irq(&phba->hbalock);
752 psli->sli_flag |= LPFC_PROCESS_LA;
753 control = readl(phba->HCregaddr);
754 control |= HC_LAINT_ENA;
755 writel(control, phba->HCregaddr);
756 readl(phba->HCregaddr); /* flush */
757 spin_unlock_irq(&phba->hbalock);
1b32f6aa 758 mempool_free(pmb, phba->mbox_mem_pool);
92d7f7b0 759 return;
dea3101e 760
dea3101e 761out:
762 /* Device Discovery completes */
e8b62011
JS		 763 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
764 "0225 Device Discovery completes\n");
2e0fef85 765 mempool_free(pmb, phba->mbox_mem_pool);
dea3101e 766
2e0fef85 767 spin_lock_irq(shost->host_lock);
58da1ffb 768 vport->fc_flag &= ~FC_ABORT_DISCOVERY;
2e0fef85 769 spin_unlock_irq(shost->host_lock);
dea3101e 770
2e0fef85 771 lpfc_can_disctmo(vport);
dea3101e 772
773 /* turn on Link Attention interrupts */
2e0fef85
JS		 774
775 spin_lock_irq(&phba->hbalock);
dea3101e 776 psli->sli_flag |= LPFC_PROCESS_LA;
777 control = readl(phba->HCregaddr);
778 control |= HC_LAINT_ENA;
779 writel(control, phba->HCregaddr);
780 readl(phba->HCregaddr); /* flush */
2e0fef85 781 spin_unlock_irq(&phba->hbalock);
dea3101e 782
783 return;
784}
785
2e0fef85 786
dea3101e 787static void
25594c6b 788lpfc_mbx_cmpl_local_config_link(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
dea3101e 789{
2e0fef85 790 struct lpfc_vport *vport = pmb->vport;
dea3101e 791
25594c6b 792 if (pmb->mb.mbxStatus)
dea3101e 793 goto out;
dea3101e 794
25594c6b
JW		 795 mempool_free(pmb, phba->mbox_mem_pool);
796
797 if (phba->fc_topology == TOPOLOGY_LOOP &&
2e0fef85
JS		 798 vport->fc_flag & FC_PUBLIC_LOOP &&
799 !(vport->fc_flag & FC_LBIT)) {
25594c6b 800 /* Need to wait for FAN - use discovery timer
2e0fef85 801 * for timeout. port_state is identically
25594c6b
JW		 802 * LPFC_LOCAL_CFG_LINK while waiting for FAN
803 */
2e0fef85 804 lpfc_set_disctmo(vport);
25594c6b 805 return;
92d7f7b0 806 }
dea3101e 807
2e0fef85 808 /* Start discovery by sending a FLOGI. port_state is identically
25594c6b
JW		 809 * LPFC_FLOGI while waiting for FLOGI cmpl
810 */
92d7f7b0 811 if (vport->port_state != LPFC_FLOGI) {
92d7f7b0
JS		 812 lpfc_initial_flogi(vport);
813 }
25594c6b 814 return;
dea3101e 815
816out:
e8b62011
JS		 817 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
818 "0306 CONFIG_LINK mbxStatus error x%x "
819 "HBA state x%x\n",
820 pmb->mb.mbxStatus, vport->port_state);
92d7f7b0 821 mempool_free(pmb, phba->mbox_mem_pool);
25594c6b 822
92d7f7b0 823 lpfc_linkdown(phba);
25594c6b 824
e8b62011
JS		 825 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
826 "0200 CONFIG_LINK bad hba state x%x\n",
827 vport->port_state);
dea3101e 828
92d7f7b0 829 lpfc_issue_clear_la(phba, vport);
dea3101e 830 return;
831}
832
833static void
2e0fef85 834lpfc_mbx_cmpl_read_sparam(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
dea3101e 835{
dea3101e 836 MAILBOX_t *mb = &pmb->mb;
837 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) pmb->context1;
2e0fef85 838 struct lpfc_vport *vport = pmb->vport;
dea3101e 839
840
841 /* Check for error */
842 if (mb->mbxStatus) {
843 /* READ_SPARAM mbox error <mbxStatus> state <hba_state> */
e8b62011
JS		 844 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
845 "0319 READ_SPARAM mbxStatus error x%x "
846 "hba state x%x>\n",
847 mb->mbxStatus, vport->port_state);
dea3101e 848 lpfc_linkdown(phba);
dea3101e 849 goto out;
850 }
851
2e0fef85 852 memcpy((uint8_t *) &vport->fc_sparam, (uint8_t *) mp->virt,
dea3101e 853 sizeof (struct serv_parm));
a12e07bc 854 if (phba->cfg_soft_wwnn)
2e0fef85
JS		 855 u64_to_wwn(phba->cfg_soft_wwnn,
856 vport->fc_sparam.nodeName.u.wwn);
c3f28afa 857 if (phba->cfg_soft_wwpn)
2e0fef85
JS		 858 u64_to_wwn(phba->cfg_soft_wwpn,
859 vport->fc_sparam.portName.u.wwn);
92d7f7b0
JS		 860 memcpy(&vport->fc_nodename, &vport->fc_sparam.nodeName,
861 sizeof(vport->fc_nodename));
862 memcpy(&vport->fc_portname, &vport->fc_sparam.portName,
863 sizeof(vport->fc_portname));
864 if (vport->port_type == LPFC_PHYSICAL_PORT) {
865 memcpy(&phba->wwnn, &vport->fc_nodename, sizeof(phba->wwnn));
866 memcpy(&phba->wwpn, &vport->fc_portname, sizeof(phba->wwnn));
867 }
868
dea3101e 869 lpfc_mbuf_free(phba, mp->virt, mp->phys);
870 kfree(mp);
2e0fef85 871 mempool_free(pmb, phba->mbox_mem_pool);
dea3101e 872 return;
873
874out:
875 pmb->context1 = NULL;
876 lpfc_mbuf_free(phba, mp->virt, mp->phys);
877 kfree(mp);
92d7f7b0
JS		 878 lpfc_issue_clear_la(phba, vport);
879 mempool_free(pmb, phba->mbox_mem_pool);
dea3101e 880 return;
881}
882
883static void
92d7f7b0 884lpfc_mbx_process_link_up(struct lpfc_hba *phba, READ_LA_VAR *la)
dea3101e 885{
92d7f7b0 886 struct lpfc_vport *vport = phba->pport;
dea3101e 887 LPFC_MBOXQ_t *sparam_mbox, *cfglink_mbox;
2e0fef85 888 int i;
14691150
JS		 889 struct lpfc_dmabuf *mp;
890 int rc;
891
dea3101e 892 sparam_mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
893 cfglink_mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
894
92d7f7b0 895 spin_lock_irq(&phba->hbalock);
2fe165b6 896 switch (la->UlnkSpeed) {
92d7f7b0
JS		 897 case LA_1GHZ_LINK:
898 phba->fc_linkspeed = LA_1GHZ_LINK;
899 break;
900 case LA_2GHZ_LINK:
901 phba->fc_linkspeed = LA_2GHZ_LINK;
902 break;
903 case LA_4GHZ_LINK:
904 phba->fc_linkspeed = LA_4GHZ_LINK;
905 break;
906 case LA_8GHZ_LINK:
907 phba->fc_linkspeed = LA_8GHZ_LINK;
908 break;
909 default:
910 phba->fc_linkspeed = LA_UNKNW_LINK;
911 break;
dea3101e 912 }
913
914 phba->fc_topology = la->topology;
92d7f7b0 915 phba->link_flag &= ~LS_NPIV_FAB_SUPPORTED;
dea3101e 916
917 if (phba->fc_topology == TOPOLOGY_LOOP) {
92d7f7b0 918 phba->sli3_options &= ~LPFC_SLI3_NPIV_ENABLED;
dea3101e 919
92d7f7b0 920 /* Get Loop Map information */
dea3101e 921 if (la->il)
2e0fef85 922 vport->fc_flag |= FC_LBIT;
dea3101e 923
2e0fef85 924 vport->fc_myDID = la->granted_AL_PA;
dea3101e 925 i = la->un.lilpBde64.tus.f.bdeSize;
926
927 if (i == 0) {
928 phba->alpa_map[0] = 0;
929 } else {
e8b62011 930 if (vport->cfg_log_verbose & LOG_LINK_EVENT) {
dea3101e 931 int numalpa, j, k;
932 union {
933 uint8_t pamap[16];
934 struct {
935 uint32_t wd1;
936 uint32_t wd2;
937 uint32_t wd3;
938 uint32_t wd4;
939 } pa;
940 } un;
941 numalpa = phba->alpa_map[0];
942 j = 0;
943 while (j < numalpa) {
944 memset(un.pamap, 0, 16);
945 for (k = 1; j < numalpa; k++) {
946 un.pamap[k - 1] =
947 phba->alpa_map[j + 1];
948 j++;
949 if (k == 16)
950 break;
951 }
952 /* Link Up Event ALPA map */
953 lpfc_printf_log(phba,
92d7f7b0
JS		 954 KERN_WARNING,
955 LOG_LINK_EVENT,
e8b62011 956 "1304 Link Up Event "
92d7f7b0
JS		 957 "ALPA map Data: x%x "
958 "x%x x%x x%x\n",
92d7f7b0
JS		 959 un.pa.wd1, un.pa.wd2,
960 un.pa.wd3, un.pa.wd4);
dea3101e 961 }
962 }
963 }
964 } else {
92d7f7b0 965 if (!(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)) {
78b2d852 966 if (phba->max_vpi && phba->cfg_enable_npiv &&
92d7f7b0
JS		 967 (phba->sli_rev == 3))
968 phba->sli3_options |= LPFC_SLI3_NPIV_ENABLED;
969 }
2e0fef85
JS		 970 vport->fc_myDID = phba->fc_pref_DID;
971 vport->fc_flag |= FC_LBIT;
dea3101e 972 }
92d7f7b0 973 spin_unlock_irq(&phba->hbalock);
dea3101e 974
975 lpfc_linkup(phba);
976 if (sparam_mbox) {
92d7f7b0 977 lpfc_read_sparam(phba, sparam_mbox, 0);
2e0fef85 978 sparam_mbox->vport = vport;
dea3101e 979 sparam_mbox->mbox_cmpl = lpfc_mbx_cmpl_read_sparam;
0b727fea 980 rc = lpfc_sli_issue_mbox(phba, sparam_mbox, MBX_NOWAIT);
14691150
JS		 981 if (rc == MBX_NOT_FINISHED) {
982 mp = (struct lpfc_dmabuf *) sparam_mbox->context1;
983 lpfc_mbuf_free(phba, mp->virt, mp->phys);
984 kfree(mp);
985 mempool_free(sparam_mbox, phba->mbox_mem_pool);
986 if (cfglink_mbox)
987 mempool_free(cfglink_mbox, phba->mbox_mem_pool);
92d7f7b0 988 goto out;
14691150 989 }
dea3101e 990 }
991
992 if (cfglink_mbox) {
2e0fef85 993 vport->port_state = LPFC_LOCAL_CFG_LINK;
dea3101e 994 lpfc_config_link(phba, cfglink_mbox);
2e0fef85 995 cfglink_mbox->vport = vport;
25594c6b 996 cfglink_mbox->mbox_cmpl = lpfc_mbx_cmpl_local_config_link;
0b727fea 997 rc = lpfc_sli_issue_mbox(phba, cfglink_mbox, MBX_NOWAIT);
92d7f7b0
JS		 998 if (rc != MBX_NOT_FINISHED)
999 return;
1000 mempool_free(cfglink_mbox, phba->mbox_mem_pool);
dea3101e 1001 }
92d7f7b0
JS		 1002out:
1003 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
e8b62011
JS		 1004 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
1005 "0263 Discovery Mailbox error: state: 0x%x : %p %p\n",
1006 vport->port_state, sparam_mbox, cfglink_mbox);
92d7f7b0
JS		 1007 lpfc_issue_clear_la(phba, vport);
1008 return;
dea3101e 1009}
1010
1011static void
2e0fef85
JS		 1012lpfc_mbx_issue_link_down(struct lpfc_hba *phba)
1013{
dea3101e 1014 uint32_t control;
1015 struct lpfc_sli *psli = &phba->sli;
1016
1017 lpfc_linkdown(phba);
1018
1019 /* turn on Link Attention interrupts - no CLEAR_LA needed */
2e0fef85 1020 spin_lock_irq(&phba->hbalock);
dea3101e 1021 psli->sli_flag |= LPFC_PROCESS_LA;
1022 control = readl(phba->HCregaddr);
1023 control |= HC_LAINT_ENA;
1024 writel(control, phba->HCregaddr);
1025 readl(phba->HCregaddr); /* flush */
2e0fef85 1026 spin_unlock_irq(&phba->hbalock);
dea3101e 1027}
1028
1029/*
1030 * This routine handles processing a READ_LA mailbox
1031 * command upon completion. It is setup in the LPFC_MBOXQ
1032 * as the completion routine when the command is
1033 * handed off to the SLI layer.
1034 */
1035void
2e0fef85 1036lpfc_mbx_cmpl_read_la(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
dea3101e 1037{
2e0fef85
JS		 1038 struct lpfc_vport *vport = pmb->vport;
1039 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
dea3101e 1040 READ_LA_VAR *la;
1041 MAILBOX_t *mb = &pmb->mb;
1042 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
1043
0d2b6b83
JS		 1044 /* Unblock ELS traffic */
1045 phba->sli.ring[LPFC_ELS_RING].flag &= ~LPFC_STOP_IOCB_EVENT;
dea3101e 1046 /* Check for error */
1047 if (mb->mbxStatus) {
ed957684 1048 lpfc_printf_log(phba, KERN_INFO, LOG_LINK_EVENT,
e8b62011
JS		 1049 "1307 READ_LA mbox error x%x state x%x\n",
1050 mb->mbxStatus, vport->port_state);
dea3101e 1051 lpfc_mbx_issue_link_down(phba);
2e0fef85 1052 phba->link_state = LPFC_HBA_ERROR;
dea3101e 1053 goto lpfc_mbx_cmpl_read_la_free_mbuf;
1054 }
1055
1056 la = (READ_LA_VAR *) & pmb->mb.un.varReadLA;
1057
1058 memcpy(&phba->alpa_map[0], mp->virt, 128);
1059
2e0fef85 1060 spin_lock_irq(shost->host_lock);
c9f8735b 1061 if (la->pb)
2e0fef85 1062 vport->fc_flag |= FC_BYPASSED_MODE;
c9f8735b 1063 else
2e0fef85
JS		 1064 vport->fc_flag &= ~FC_BYPASSED_MODE;
1065 spin_unlock_irq(shost->host_lock);
c9f8735b 1066
dea3101e 1067 if (((phba->fc_eventTag + 1) < la->eventTag) ||
92d7f7b0 1068 (phba->fc_eventTag == la->eventTag)) {
dea3101e 1069 phba->fc_stat.LinkMultiEvent++;
2e0fef85 1070 if (la->attType == AT_LINK_UP)
dea3101e 1071 if (phba->fc_eventTag != 0)
1072 lpfc_linkdown(phba);
92d7f7b0 1073 }
dea3101e 1074
1075 phba->fc_eventTag = la->eventTag;
1076
1077 if (la->attType == AT_LINK_UP) {
1078 phba->fc_stat.LinkUp++;
2e0fef85 1079 if (phba->link_flag & LS_LOOPBACK_MODE) {
3163f725 1080 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
e8b62011
JS		 1081 "1306 Link Up Event in loop back mode "
1082 "x%x received Data: x%x x%x x%x x%x\n",
1083 la->eventTag, phba->fc_eventTag,
1084 la->granted_AL_PA, la->UlnkSpeed,
1085 phba->alpa_map[0]);
5b8bd0c9
JS		 1086 } else {
1087 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
e8b62011
JS		 1088 "1303 Link Up Event x%x received "
1089 "Data: x%x x%x x%x x%x\n",
1090 la->eventTag, phba->fc_eventTag,
1091 la->granted_AL_PA, la->UlnkSpeed,
1092 phba->alpa_map[0]);
5b8bd0c9 1093 }
92d7f7b0 1094 lpfc_mbx_process_link_up(phba, la);
dea3101e 1095 } else {
1096 phba->fc_stat.LinkDown++;
3163f725
JS		 1097 if (phba->link_flag & LS_LOOPBACK_MODE) {
1098 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
1099 "1308 Link Down Event in loop back mode "
1100 "x%x received "
1101 "Data: x%x x%x x%x\n",
1102 la->eventTag, phba->fc_eventTag,
1103 phba->pport->port_state, vport->fc_flag);
1104 }
1105 else {
1106 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
e8b62011 1107 "1305 Link Down Event x%x received "
dea3101e 1108 "Data: x%x x%x x%x\n",
e8b62011 1109 la->eventTag, phba->fc_eventTag,
2e0fef85 1110 phba->pport->port_state, vport->fc_flag);
3163f725 1111 }
dea3101e 1112 lpfc_mbx_issue_link_down(phba);
1113 }
1114
1115lpfc_mbx_cmpl_read_la_free_mbuf:
1116 lpfc_mbuf_free(phba, mp->virt, mp->phys);
1117 kfree(mp);
1118 mempool_free(pmb, phba->mbox_mem_pool);
1119 return;
1120}
1121
1122/*
1123 * This routine handles processing a REG_LOGIN mailbox
1124 * command upon completion. It is setup in the LPFC_MBOXQ
1125 * as the completion routine when the command is
1126 * handed off to the SLI layer.
1127 */
1128void
2e0fef85 1129lpfc_mbx_cmpl_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
dea3101e 1130{
2e0fef85 1131 struct lpfc_vport *vport = pmb->vport;
92d7f7b0 1132 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
2e0fef85 1133 struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) pmb->context2;
dea3101e 1134
dea3101e 1135 pmb->context1 = NULL;
1136
1137 /* Good status, call state machine */
2e0fef85 1138 lpfc_disc_state_machine(vport, ndlp, pmb, NLP_EVT_CMPL_REG_LOGIN);
dea3101e 1139 lpfc_mbuf_free(phba, mp->virt, mp->phys);
1140 kfree(mp);
2e0fef85 1141 mempool_free(pmb, phba->mbox_mem_pool);
fa4066b6
JS		 1142 /* decrement the node reference count held for this callback
1143 * function.
1144 */
329f9bc7 1145 lpfc_nlp_put(ndlp);
dea3101e 1146
1147 return;
1148}
1149
92d7f7b0
JS		 1150static void
1151lpfc_mbx_cmpl_unreg_vpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
1152{
1153 MAILBOX_t *mb = &pmb->mb;
1154 struct lpfc_vport *vport = pmb->vport;
1155 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1156
1157 switch (mb->mbxStatus) {
1158 case 0x0011:
1159 case 0x0020:
1160 case 0x9700:
e8b62011
JS		 1161 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
1162 "0911 cmpl_unreg_vpi, mb status = 0x%x\n",
1163 mb->mbxStatus);
92d7f7b0 1164 break;
92d7f7b0
JS		 1165 }
1166 vport->unreg_vpi_cmpl = VPORT_OK;
1167 mempool_free(pmb, phba->mbox_mem_pool);
1168 /*
1169 * This shost reference might have been taken at the beginning of
1170 * lpfc_vport_delete()
1171 */
1172 if (vport->load_flag & FC_UNLOADING)
1173 scsi_host_put(shost);
1174}
1175
1176void
1177lpfc_mbx_unreg_vpi(struct lpfc_vport *vport)
1178{
1179 struct lpfc_hba *phba = vport->phba;
1180 LPFC_MBOXQ_t *mbox;
1181 int rc;
1182
1183 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1184 if (!mbox)
1185 return;
1186
1187 lpfc_unreg_vpi(phba, vport->vpi, mbox);
1188 mbox->vport = vport;
1189 mbox->mbox_cmpl = lpfc_mbx_cmpl_unreg_vpi;
0b727fea 1190 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
92d7f7b0 1191 if (rc == MBX_NOT_FINISHED) {
e8b62011
JS		 1192 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX | LOG_VPORT,
1193 "1800 Could not issue unreg_vpi\n");
92d7f7b0
JS		 1194 mempool_free(mbox, phba->mbox_mem_pool);
1195 vport->unreg_vpi_cmpl = VPORT_ERROR;
1196 }
1197}
1198
1199static void
1200lpfc_mbx_cmpl_reg_vpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
1201{
1202 struct lpfc_vport *vport = pmb->vport;
1203 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1204 MAILBOX_t *mb = &pmb->mb;
1205
1206 switch (mb->mbxStatus) {
1207 case 0x0011:
1208 case 0x9601:
1209 case 0x9602:
e8b62011
JS		 1210 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
1211 "0912 cmpl_reg_vpi, mb status = 0x%x\n",
1212 mb->mbxStatus);
92d7f7b0
JS		 1213 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
1214 spin_lock_irq(shost->host_lock);
1215 vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP);
1216 spin_unlock_irq(shost->host_lock);
1217 vport->fc_myDID = 0;
1218 goto out;
1219 }
92d7f7b0
JS		 1220
1221 vport->num_disc_nodes = 0;
1222 /* go thru NPR list and issue ELS PLOGIs */
1223 if (vport->fc_npr_cnt)
1224 lpfc_els_disc_plogi(vport);
1225
1226 if (!vport->num_disc_nodes) {
1227 spin_lock_irq(shost->host_lock);
1228 vport->fc_flag &= ~FC_NDISC_ACTIVE;
1229 spin_unlock_irq(shost->host_lock);
1230 lpfc_can_disctmo(vport);
1231 }
1232 vport->port_state = LPFC_VPORT_READY;
1233
1234out:
1235 mempool_free(pmb, phba->mbox_mem_pool);
1236 return;
1237}
1238
dea3101e 1239/*
1240 * This routine handles processing a Fabric REG_LOGIN mailbox
1241 * command upon completion. It is setup in the LPFC_MBOXQ
1242 * as the completion routine when the command is
1243 * handed off to the SLI layer.
1244 */
1245void
2e0fef85 1246lpfc_mbx_cmpl_fabric_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
dea3101e 1247{
92d7f7b0 1248 struct lpfc_vport *vport = pmb->vport;
2e0fef85
JS		 1249 MAILBOX_t *mb = &pmb->mb;
1250 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
92d7f7b0 1251 struct lpfc_nodelist *ndlp;
549e55cd
JS		 1252 struct lpfc_vport **vports;
1253 int i;
dea3101e 1254
549e55cd 1255 ndlp = (struct lpfc_nodelist *) pmb->context2;
329f9bc7
JS		 1256 pmb->context1 = NULL;
1257 pmb->context2 = NULL;
dea3101e 1258 if (mb->mbxStatus) {
1259 lpfc_mbuf_free(phba, mp->virt, mp->phys);
1260 kfree(mp);
329f9bc7 1261 mempool_free(pmb, phba->mbox_mem_pool);
dea3101e 1262
92d7f7b0
JS		 1263 if (phba->fc_topology == TOPOLOGY_LOOP) {
1264 /* FLOGI failed, use loop map to make discovery list */
1265 lpfc_disc_list_loopmap(vport);
1266
1267 /* Start discovery */
1268 lpfc_disc_start(vport);
e47c9093
JS		 1269 /* Decrement the reference count to ndlp after the
1270 * reference to the ndlp are done.
1271 */
1272 lpfc_nlp_put(ndlp);
92d7f7b0
JS		 1273 return;
1274 }
1275
1276 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
e8b62011
JS		 1277 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
1278 "0258 Register Fabric login error: 0x%x\n",
1279 mb->mbxStatus);
e47c9093
JS		 1280 /* Decrement the reference count to ndlp after the reference
1281 * to the ndlp are done.
1282 */
1283 lpfc_nlp_put(ndlp);
dea3101e 1284 return;
1285 }
1286
dea3101e 1287 ndlp->nlp_rpi = mb->un.varWords[0];
dea3101e 1288 ndlp->nlp_type |= NLP_FABRIC;
2e0fef85 1289 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
dea3101e 1290
2e0fef85 1291 if (vport->port_state == LPFC_FABRIC_CFG_LINK) {
549e55cd
JS		 1292 vports = lpfc_create_vport_work_array(phba);
1293 if (vports != NULL)
1294 for(i = 0;
09372820 1295 i <= phba->max_vpi && vports[i] != NULL;
549e55cd
JS		 1296 i++) {
1297 if (vports[i]->port_type == LPFC_PHYSICAL_PORT)
1298 continue;
58da1ffb
JS		 1299 if (phba->fc_topology == TOPOLOGY_LOOP) {
1300 lpfc_vport_set_state(vports[i],
1301 FC_VPORT_LINKDOWN);
1302 continue;
1303 }
549e55cd
JS		 1304 if (phba->link_flag & LS_NPIV_FAB_SUPPORTED)
1305 lpfc_initial_fdisc(vports[i]);
58da1ffb 1306 else {
549e55cd
JS		 1307 lpfc_vport_set_state(vports[i],
1308 FC_VPORT_NO_FABRIC_SUPP);
e8b62011
JS		 1309 lpfc_printf_vlog(vport, KERN_ERR,
1310 LOG_ELS,
1311 "0259 No NPIV "
1312 "Fabric support\n");
549e55cd 1313 }
dea3101e 1314 }
09372820 1315 lpfc_destroy_vport_work_array(phba, vports);
92d7f7b0 1316 lpfc_do_scr_ns_plogi(phba, vport);
dea3101e 1317 }
1318
1319 lpfc_mbuf_free(phba, mp->virt, mp->phys);
1320 kfree(mp);
329f9bc7 1321 mempool_free(pmb, phba->mbox_mem_pool);
e47c9093
JS		 1322
1323 /* Drop the reference count from the mbox at the end after
1324 * all the current reference to the ndlp have been done.
1325 */
1326 lpfc_nlp_put(ndlp);
dea3101e 1327 return;
1328}
1329
1330/*
1331 * This routine handles processing a NameServer REG_LOGIN mailbox
1332 * command upon completion. It is setup in the LPFC_MBOXQ
1333 * as the completion routine when the command is
1334 * handed off to the SLI layer.
1335 */
1336void
2e0fef85 1337lpfc_mbx_cmpl_ns_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
dea3101e 1338{
2e0fef85
JS		 1339 MAILBOX_t *mb = &pmb->mb;
1340 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
1341 struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) pmb->context2;
1342 struct lpfc_vport *vport = pmb->vport;
dea3101e 1343
1344 if (mb->mbxStatus) {
92d7f7b0 1345out:
fa4066b6
JS		 1346 /* decrement the node reference count held for this
1347 * callback function.
1348 */
329f9bc7 1349 lpfc_nlp_put(ndlp);
dea3101e 1350 lpfc_mbuf_free(phba, mp->virt, mp->phys);
1351 kfree(mp);
de0c5b32 1352 mempool_free(pmb, phba->mbox_mem_pool);
87af33fe
JS		 1353
1354 /* If no other thread is using the ndlp, free it */
1355 lpfc_nlp_not_used(ndlp);
dea3101e 1356
92d7f7b0
JS		 1357 if (phba->fc_topology == TOPOLOGY_LOOP) {
1358 /*
1359 * RegLogin failed, use loop map to make discovery
1360 * list
1361 */
1362 lpfc_disc_list_loopmap(vport);
dea3101e 1363
92d7f7b0
JS		 1364 /* Start discovery */
1365 lpfc_disc_start(vport);
1366 return;
1367 }
1368 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
e8b62011
JS		 1369 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
1370 "0260 Register NameServer error: 0x%x\n",
1371 mb->mbxStatus);
dea3101e 1372 return;
1373 }
1374
1375 pmb->context1 = NULL;
1376
dea3101e 1377 ndlp->nlp_rpi = mb->un.varWords[0];
dea3101e 1378 ndlp->nlp_type |= NLP_FABRIC;
2e0fef85 1379 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
dea3101e 1380
2e0fef85
JS		 1381 if (vport->port_state < LPFC_VPORT_READY) {
1382 /* Link up discovery requires Fabric registration. */
92d7f7b0
JS		 1383 lpfc_ns_cmd(vport, SLI_CTNS_RFF_ID, 0, 0); /* Do this first! */
1384 lpfc_ns_cmd(vport, SLI_CTNS_RNN_ID, 0, 0);
1385 lpfc_ns_cmd(vport, SLI_CTNS_RSNN_NN, 0, 0);
1386 lpfc_ns_cmd(vport, SLI_CTNS_RSPN_ID, 0, 0);
1387 lpfc_ns_cmd(vport, SLI_CTNS_RFT_ID, 0, 0);
1388
1389 /* Issue SCR just before NameServer GID_FT Query */
1390 lpfc_issue_els_scr(vport, SCR_DID, 0);
dea3101e 1391 }
1392
2e0fef85 1393 vport->fc_ns_retry = 0;
dea3101e 1394 /* Good status, issue CT Request to NameServer */
92d7f7b0 1395 if (lpfc_ns_cmd(vport, SLI_CTNS_GID_FT, 0, 0)) {
dea3101e 1396 /* Cannot issue NameServer Query, so finish up discovery */
92d7f7b0 1397 goto out;
dea3101e 1398 }
1399
fa4066b6
JS		 1400 /* decrement the node reference count held for this
1401 * callback function.
1402 */
329f9bc7 1403 lpfc_nlp_put(ndlp);
dea3101e 1404 lpfc_mbuf_free(phba, mp->virt, mp->phys);
1405 kfree(mp);
2e0fef85 1406 mempool_free(pmb, phba->mbox_mem_pool);
dea3101e 1407
1408 return;
1409}
1410
1411static void
2e0fef85 1412lpfc_register_remote_port(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
dea3101e 1413{
2e0fef85
JS		 1414 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1415 struct fc_rport *rport;
dea3101e 1416 struct lpfc_rport_data *rdata;
1417 struct fc_rport_identifiers rport_ids;
2e0fef85 1418 struct lpfc_hba *phba = vport->phba;
dea3101e 1419
1420 /* Remote port has reappeared. Re-register w/ FC transport */
68ce1eb5
AM		 1421 rport_ids.node_name = wwn_to_u64(ndlp->nlp_nodename.u.wwn);
1422 rport_ids.port_name = wwn_to_u64(ndlp->nlp_portname.u.wwn);
dea3101e 1423 rport_ids.port_id = ndlp->nlp_DID;
1424 rport_ids.roles = FC_RPORT_ROLE_UNKNOWN;
dea3101e 1425
329f9bc7
JS		 1426 /*
1427 * We leave our node pointer in rport->dd_data when we unregister a
1428 * FCP target port. But fc_remote_port_add zeros the space to which
1429 * rport->dd_data points. So, if we're reusing a previously
1430 * registered port, drop the reference that we took the last time we
1431 * registered the port.
1432 */
1433 if (ndlp->rport && ndlp->rport->dd_data &&
e47c9093 1434 ((struct lpfc_rport_data *) ndlp->rport->dd_data)->pnode == ndlp)
329f9bc7 1435 lpfc_nlp_put(ndlp);
858c9f6c
JS		 1436
1437 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
1438 "rport add: did:x%x flg:x%x type x%x",
1439 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type);
1440
2e0fef85 1441 ndlp->rport = rport = fc_remote_port_add(shost, 0, &rport_ids);
329f9bc7 1442 if (!rport || !get_device(&rport->dev)) {
dea3101e 1443 dev_printk(KERN_WARNING, &phba->pcidev->dev,
1444 "Warning: fc_remote_port_add failed\n");
1445 return;
1446 }
1447
1448 /* initialize static port data */
1449 rport->maxframe_size = ndlp->nlp_maxframe;
1450 rport->supported_classes = ndlp->nlp_class_sup;
dea3101e 1451 rdata = rport->dd_data;
329f9bc7 1452 rdata->pnode = lpfc_nlp_get(ndlp);
23dc04f1
JSEC		 1453
1454 if (ndlp->nlp_type & NLP_FCP_TARGET)
1455 rport_ids.roles |= FC_RPORT_ROLE_FCP_TARGET;
1456 if (ndlp->nlp_type & NLP_FCP_INITIATOR)
1457 rport_ids.roles |= FC_RPORT_ROLE_FCP_INITIATOR;
1458
1459
1460 if (rport_ids.roles != FC_RPORT_ROLE_UNKNOWN)
1461 fc_remote_port_rolechg(rport, rport_ids.roles);
1462
071fbd3d 1463 if ((rport->scsi_target_id != -1) &&
92d7f7b0 1464 (rport->scsi_target_id < LPFC_MAX_TARGET)) {
071fbd3d
JS		 1465 ndlp->nlp_sid = rport->scsi_target_id;
1466 }
19a7b4ae
JSEC		 1467 return;
1468}
1469
1470static void
2e0fef85 1471lpfc_unregister_remote_port(struct lpfc_nodelist *ndlp)
19a7b4ae
JSEC		 1472{
1473 struct fc_rport *rport = ndlp->rport;
c01f3208 1474
858c9f6c
JS		 1475 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_RPORT,
1476 "rport delete: did:x%x flg:x%x type x%x",
1477 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type);
1478
19a7b4ae 1479 fc_remote_port_delete(rport);
dea3101e 1480
1481 return;
1482}
1483
de0c5b32 1484static void
2e0fef85 1485lpfc_nlp_counters(struct lpfc_vport *vport, int state, int count)
dea3101e 1486{
2e0fef85
JS		 1487 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1488
1489 spin_lock_irq(shost->host_lock);
de0c5b32
JS		 1490 switch (state) {
1491 case NLP_STE_UNUSED_NODE:
2e0fef85 1492 vport->fc_unused_cnt += count;
de0c5b32
JS		 1493 break;
1494 case NLP_STE_PLOGI_ISSUE:
2e0fef85 1495 vport->fc_plogi_cnt += count;
de0c5b32
JS		 1496 break;
1497 case NLP_STE_ADISC_ISSUE:
2e0fef85 1498 vport->fc_adisc_cnt += count;
dea3101e 1499 break;
de0c5b32 1500 case NLP_STE_REG_LOGIN_ISSUE:
2e0fef85 1501 vport->fc_reglogin_cnt += count;
de0c5b32
JS		 1502 break;
1503 case NLP_STE_PRLI_ISSUE:
2e0fef85 1504 vport->fc_prli_cnt += count;
de0c5b32
JS		 1505 break;
1506 case NLP_STE_UNMAPPED_NODE:
2e0fef85 1507 vport->fc_unmap_cnt += count;
de0c5b32
JS		 1508 break;
1509 case NLP_STE_MAPPED_NODE:
2e0fef85 1510 vport->fc_map_cnt += count;
de0c5b32
JS		 1511 break;
1512 case NLP_STE_NPR_NODE:
2e0fef85 1513 vport->fc_npr_cnt += count;
de0c5b32
JS		 1514 break;
1515 }
2e0fef85 1516 spin_unlock_irq(shost->host_lock);
de0c5b32 1517}
66a9ed66 1518
de0c5b32 1519static void
2e0fef85 1520lpfc_nlp_state_cleanup(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
de0c5b32
JS		 1521 int old_state, int new_state)
1522{
2e0fef85
JS		 1523 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1524
de0c5b32
JS		 1525 if (new_state == NLP_STE_UNMAPPED_NODE) {
1526 ndlp->nlp_type &= ~(NLP_FCP_TARGET | NLP_FCP_INITIATOR);
1527 ndlp->nlp_flag &= ~NLP_NODEV_REMOVE;
1528 ndlp->nlp_type |= NLP_FC_NODE;
1529 }
1530 if (new_state == NLP_STE_MAPPED_NODE)
1531 ndlp->nlp_flag &= ~NLP_NODEV_REMOVE;
1532 if (new_state == NLP_STE_NPR_NODE)
1533 ndlp->nlp_flag &= ~NLP_RCV_PLOGI;
1534
1535 /* Transport interface */
1536 if (ndlp->rport && (old_state == NLP_STE_MAPPED_NODE ||
1537 old_state == NLP_STE_UNMAPPED_NODE)) {
2e0fef85
JS		 1538 vport->phba->nport_event_cnt++;
1539 lpfc_unregister_remote_port(ndlp);
de0c5b32 1540 }
dea3101e 1541
de0c5b32
JS		 1542 if (new_state == NLP_STE_MAPPED_NODE ||
1543 new_state == NLP_STE_UNMAPPED_NODE) {
2e0fef85 1544 vport->phba->nport_event_cnt++;
858c9f6c
JS		 1545 /*
1546 * Tell the fc transport about the port, if we haven't
1547 * already. If we have, and it's a scsi entity, be
1548 * sure to unblock any attached scsi devices
1549 */
1550 lpfc_register_remote_port(vport, ndlp);
de0c5b32 1551 }
858c9f6c
JS		 1552 /*
1553 * if we added to Mapped list, but the remote port
1554 * registration failed or assigned a target id outside
1555 * our presentable range - move the node to the
1556 * Unmapped List
1557 */
de0c5b32
JS		 1558 if (new_state == NLP_STE_MAPPED_NODE &&
1559 (!ndlp->rport ||
1560 ndlp->rport->scsi_target_id == -1 ||
1561 ndlp->rport->scsi_target_id >= LPFC_MAX_TARGET)) {
2e0fef85 1562 spin_lock_irq(shost->host_lock);
de0c5b32 1563 ndlp->nlp_flag |= NLP_TGT_NO_SCSIID;
2e0fef85
JS		 1564 spin_unlock_irq(shost->host_lock);
1565 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
dea3101e 1566 }
de0c5b32
JS		 1567}
1568
685f0bf7
JS		 1569static char *
1570lpfc_nlp_state_name(char *buffer, size_t size, int state)
1571{
1572 static char *states[] = {
1573 [NLP_STE_UNUSED_NODE] = "UNUSED",
1574 [NLP_STE_PLOGI_ISSUE] = "PLOGI",
1575 [NLP_STE_ADISC_ISSUE] = "ADISC",
1576 [NLP_STE_REG_LOGIN_ISSUE] = "REGLOGIN",
1577 [NLP_STE_PRLI_ISSUE] = "PRLI",
1578 [NLP_STE_UNMAPPED_NODE] = "UNMAPPED",
1579 [NLP_STE_MAPPED_NODE] = "MAPPED",
1580 [NLP_STE_NPR_NODE] = "NPR",
1581 };
1582
311464ec 1583 if (state < NLP_STE_MAX_STATE && states[state])
685f0bf7
JS		 1584 strlcpy(buffer, states[state], size);
1585 else
1586 snprintf(buffer, size, "unknown (%d)", state);
1587 return buffer;
1588}
1589
de0c5b32 1590void
2e0fef85
JS		 1591lpfc_nlp_set_state(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1592 int state)
de0c5b32 1593{
2e0fef85 1594 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
de0c5b32 1595 int old_state = ndlp->nlp_state;
685f0bf7 1596 char name1[16], name2[16];
de0c5b32 1597
e8b62011
JS		 1598 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
1599 "0904 NPort state transition x%06x, %s -> %s\n",
1600 ndlp->nlp_DID,
1601 lpfc_nlp_state_name(name1, sizeof(name1), old_state),
1602 lpfc_nlp_state_name(name2, sizeof(name2), state));
858c9f6c
JS		 1603
1604 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE,
1605 "node statechg did:x%x old:%d ste:%d",
1606 ndlp->nlp_DID, old_state, state);
1607
de0c5b32 1608 if (old_state == NLP_STE_NPR_NODE &&
de0c5b32 1609 state != NLP_STE_NPR_NODE)
2e0fef85 1610 lpfc_cancel_retry_delay_tmo(vport, ndlp);
de0c5b32
JS		 1611 if (old_state == NLP_STE_UNMAPPED_NODE) {
1612 ndlp->nlp_flag &= ~NLP_TGT_NO_SCSIID;
1613 ndlp->nlp_type &= ~NLP_FC_NODE;
1614 }
1615
685f0bf7 1616 if (list_empty(&ndlp->nlp_listp)) {
2e0fef85
JS		 1617 spin_lock_irq(shost->host_lock);
1618 list_add_tail(&ndlp->nlp_listp, &vport->fc_nodes);
1619 spin_unlock_irq(shost->host_lock);
685f0bf7 1620 } else if (old_state)
2e0fef85 1621 lpfc_nlp_counters(vport, old_state, -1);
de0c5b32
JS		 1622
1623 ndlp->nlp_state = state;
2e0fef85
JS		 1624 lpfc_nlp_counters(vport, state, 1);
1625 lpfc_nlp_state_cleanup(vport, ndlp, old_state, state);
de0c5b32
JS		 1626}
1627
e47c9093
JS		 1628void
1629lpfc_enqueue_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
1630{
1631 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1632
1633 if (list_empty(&ndlp->nlp_listp)) {
1634 spin_lock_irq(shost->host_lock);
1635 list_add_tail(&ndlp->nlp_listp, &vport->fc_nodes);
1636 spin_unlock_irq(shost->host_lock);
1637 }
1638}
1639
de0c5b32 1640void
2e0fef85 1641lpfc_dequeue_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
de0c5b32 1642{
2e0fef85
JS		 1643 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1644
0d2b6b83 1645 lpfc_cancel_retry_delay_tmo(vport, ndlp);
de0c5b32 1646 if (ndlp->nlp_state && !list_empty(&ndlp->nlp_listp))
2e0fef85
JS		 1647 lpfc_nlp_counters(vport, ndlp->nlp_state, -1);
1648 spin_lock_irq(shost->host_lock);
685f0bf7 1649 list_del_init(&ndlp->nlp_listp);
2e0fef85 1650 spin_unlock_irq(shost->host_lock);
858c9f6c 1651 lpfc_nlp_state_cleanup(vport, ndlp, ndlp->nlp_state,
e47c9093
JS		 1652 NLP_STE_UNUSED_NODE);
1653}
1654
4d9db01e 1655static void
e47c9093
JS		 1656lpfc_disable_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
1657{
0d2b6b83 1658 lpfc_cancel_retry_delay_tmo(vport, ndlp);
e47c9093
JS		 1659 if (ndlp->nlp_state && !list_empty(&ndlp->nlp_listp))
1660 lpfc_nlp_counters(vport, ndlp->nlp_state, -1);
1661 lpfc_nlp_state_cleanup(vport, ndlp, ndlp->nlp_state,
1662 NLP_STE_UNUSED_NODE);
1663}
1664
1665struct lpfc_nodelist *
1666lpfc_enable_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1667 int state)
1668{
1669 struct lpfc_hba *phba = vport->phba;
1670 uint32_t did;
1671 unsigned long flags;
1672
1673 if (!ndlp)
1674 return NULL;
1675
1676 spin_lock_irqsave(&phba->ndlp_lock, flags);
1677 /* The ndlp should not be in memory free mode */
1678 if (NLP_CHK_FREE_REQ(ndlp)) {
1679 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
1680 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NODE,
1681 "0277 lpfc_enable_node: ndlp:x%p "
1682 "usgmap:x%x refcnt:%d\n",
1683 (void *)ndlp, ndlp->nlp_usg_map,
1684 atomic_read(&ndlp->kref.refcount));
1685 return NULL;
1686 }
1687 /* The ndlp should not already be in active mode */
1688 if (NLP_CHK_NODE_ACT(ndlp)) {
1689 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
1690 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NODE,
1691 "0278 lpfc_enable_node: ndlp:x%p "
1692 "usgmap:x%x refcnt:%d\n",
1693 (void *)ndlp, ndlp->nlp_usg_map,
1694 atomic_read(&ndlp->kref.refcount));
1695 return NULL;
1696 }
1697
1698 /* Keep the original DID */
1699 did = ndlp->nlp_DID;
1700
1701 /* re-initialize ndlp except of ndlp linked list pointer */
1702 memset((((char *)ndlp) + sizeof (struct list_head)), 0,
1703 sizeof (struct lpfc_nodelist) - sizeof (struct list_head));
1704 INIT_LIST_HEAD(&ndlp->els_retry_evt.evt_listp);
1705 INIT_LIST_HEAD(&ndlp->dev_loss_evt.evt_listp);
1706 init_timer(&ndlp->nlp_delayfunc);
1707 ndlp->nlp_delayfunc.function = lpfc_els_retry_delay;
1708 ndlp->nlp_delayfunc.data = (unsigned long)ndlp;
1709 ndlp->nlp_DID = did;
1710 ndlp->vport = vport;
1711 ndlp->nlp_sid = NLP_NO_SID;
1712 /* ndlp management re-initialize */
1713 kref_init(&ndlp->kref);
1714 NLP_INT_NODE_ACT(ndlp);
1715
1716 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
1717
1718 if (state != NLP_STE_UNUSED_NODE)
1719 lpfc_nlp_set_state(vport, ndlp, state);
1720
1721 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE,
1722 "node enable: did:x%x",
1723 ndlp->nlp_DID, 0, 0);
1724 return ndlp;
de0c5b32
JS		 1725}
1726
1727void
2e0fef85 1728lpfc_drop_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
de0c5b32 1729{
87af33fe 1730 /*
fa4066b6 1731 * Use of lpfc_drop_node and UNUSED list: lpfc_drop_node should
87af33fe 1732 * be used if we wish to issue the "last" lpfc_nlp_put() to remove
fa4066b6
JS		 1733 * the ndlp from the vport. The ndlp marked as UNUSED on the list
1734 * until ALL other outstanding threads have completed. We check
1735 * that the ndlp not already in the UNUSED state before we proceed.
87af33fe 1736 */
fa4066b6
JS		 1737 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
1738 return;
51ef4c26 1739 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNUSED_NODE);
87af33fe 1740 lpfc_nlp_put(ndlp);
98c9ea5c 1741 return;
dea3101e 1742}
1743
1744/*
1745 * Start / ReStart rescue timer for Discovery / RSCN handling
1746 */
1747void
2e0fef85 1748lpfc_set_disctmo(struct lpfc_vport *vport)
dea3101e 1749{
2e0fef85
JS		 1750 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1751 struct lpfc_hba *phba = vport->phba;
dea3101e 1752 uint32_t tmo;
1753
2e0fef85 1754 if (vport->port_state == LPFC_LOCAL_CFG_LINK) {
c9f8735b
JW		 1755 /* For FAN, timeout should be greater then edtov */
1756 tmo = (((phba->fc_edtov + 999) / 1000) + 1);
1757 } else {
1758 /* Normal discovery timeout should be > then ELS/CT timeout
1759 * FC spec states we need 3 * ratov for CT requests
1760 */
1761 tmo = ((phba->fc_ratov * 3) + 3);
1762 }
dea3101e 1763
858c9f6c
JS		 1764
1765 if (!timer_pending(&vport->fc_disctmo)) {
1766 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
1767 "set disc timer: tmo:x%x state:x%x flg:x%x",
1768 tmo, vport->port_state, vport->fc_flag);
1769 }
1770
2e0fef85
JS		 1771 mod_timer(&vport->fc_disctmo, jiffies + HZ * tmo);
1772 spin_lock_irq(shost->host_lock);
1773 vport->fc_flag |= FC_DISC_TMO;
1774 spin_unlock_irq(shost->host_lock);
dea3101e 1775
1776 /* Start Discovery Timer state <hba_state> */
e8b62011
JS		 1777 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
1778 "0247 Start Discovery Timer state x%x "
1779 "Data: x%x x%lx x%x x%x\n",
1780 vport->port_state, tmo,
1781 (unsigned long)&vport->fc_disctmo, vport->fc_plogi_cnt,
1782 vport->fc_adisc_cnt);
dea3101e 1783
1784 return;
1785}
1786
1787/*
1788 * Cancel rescue timer for Discovery / RSCN handling
1789 */
1790int
2e0fef85 1791lpfc_can_disctmo(struct lpfc_vport *vport)
dea3101e 1792{
2e0fef85 1793 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2e0fef85
JS		 1794 unsigned long iflags;
1795
858c9f6c
JS		 1796 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
1797 "can disc timer: state:x%x rtry:x%x flg:x%x",
1798 vport->port_state, vport->fc_ns_retry, vport->fc_flag);
1799
dea3101e 1800 /* Turn off discovery timer if its running */
2e0fef85
JS		 1801 if (vport->fc_flag & FC_DISC_TMO) {
1802 spin_lock_irqsave(shost->host_lock, iflags);
1803 vport->fc_flag &= ~FC_DISC_TMO;
1804 spin_unlock_irqrestore(shost->host_lock, iflags);
1805 del_timer_sync(&vport->fc_disctmo);
1806 spin_lock_irqsave(&vport->work_port_lock, iflags);
1807 vport->work_port_events &= ~WORKER_DISC_TMO;
1808 spin_unlock_irqrestore(&vport->work_port_lock, iflags);
dea3101e 1809 }
1810
1811 /* Cancel Discovery Timer state <hba_state> */
e8b62011
JS		 1812 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
1813 "0248 Cancel Discovery Timer state x%x "
1814 "Data: x%x x%x x%x\n",
1815 vport->port_state, vport->fc_flag,
1816 vport->fc_plogi_cnt, vport->fc_adisc_cnt);
2fe165b6 1817 return 0;
dea3101e 1818}
1819
1820/*
1821 * Check specified ring for outstanding IOCB on the SLI queue
1822 * Return true if iocb matches the specified nport
1823 */
1824int
2e0fef85
JS		 1825lpfc_check_sli_ndlp(struct lpfc_hba *phba,
1826 struct lpfc_sli_ring *pring,
1827 struct lpfc_iocbq *iocb,
1828 struct lpfc_nodelist *ndlp)
dea3101e 1829{
2e0fef85
JS		 1830 struct lpfc_sli *psli = &phba->sli;
1831 IOCB_t *icmd = &iocb->iocb;
92d7f7b0
JS		 1832 struct lpfc_vport *vport = ndlp->vport;
1833
1834 if (iocb->vport != vport)
1835 return 0;
1836
dea3101e 1837 if (pring->ringno == LPFC_ELS_RING) {
1838 switch (icmd->ulpCommand) {
1839 case CMD_GEN_REQUEST64_CR:
1840 if (icmd->ulpContext == (volatile ushort)ndlp->nlp_rpi)
2fe165b6 1841 return 1;
dea3101e 1842 case CMD_ELS_REQUEST64_CR:
10d4e957
JS		 1843 if (icmd->un.elsreq64.remoteID == ndlp->nlp_DID)
1844 return 1;
dea3101e 1845 case CMD_XMIT_ELS_RSP64_CX:
1846 if (iocb->context1 == (uint8_t *) ndlp)
2fe165b6 1847 return 1;
dea3101e 1848 }
a4bc3379 1849 } else if (pring->ringno == psli->extra_ring) {
dea3101e 1850
1851 } else if (pring->ringno == psli->fcp_ring) {
1852 /* Skip match check if waiting to relogin to FCP target */
1853 if ((ndlp->nlp_type & NLP_FCP_TARGET) &&
92d7f7b0 1854 (ndlp->nlp_flag & NLP_DELAY_TMO)) {
2fe165b6 1855 return 0;
dea3101e 1856 }
1857 if (icmd->ulpContext == (volatile ushort)ndlp->nlp_rpi) {
2fe165b6 1858 return 1;
dea3101e 1859 }
1860 } else if (pring->ringno == psli->next_ring) {
1861
1862 }
2fe165b6 1863 return 0;
dea3101e 1864}
1865
1866/*
1867 * Free resources / clean up outstanding I/Os
1868 * associated with nlp_rpi in the LPFC_NODELIST entry.
1869 */
1870static int
2e0fef85 1871lpfc_no_rpi(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
dea3101e 1872{
2534ba75 1873 LIST_HEAD(completions);
dea3101e 1874 struct lpfc_sli *psli;
1875 struct lpfc_sli_ring *pring;
1876 struct lpfc_iocbq *iocb, *next_iocb;
1877 IOCB_t *icmd;
1878 uint32_t rpi, i;
1879
92d7f7b0
JS		 1880 lpfc_fabric_abort_nport(ndlp);
1881
dea3101e 1882 /*
1883 * Everything that matches on txcmplq will be returned
1884 * by firmware with a no rpi error.
1885 */
1886 psli = &phba->sli;
1887 rpi = ndlp->nlp_rpi;
1888 if (rpi) {
1889 /* Now process each ring */
1890 for (i = 0; i < psli->num_rings; i++) {
1891 pring = &psli->ring[i];
1892
2e0fef85 1893 spin_lock_irq(&phba->hbalock);
dea3101e 1894 list_for_each_entry_safe(iocb, next_iocb, &pring->txq,
2e0fef85 1895 list) {
dea3101e 1896 /*
1897 * Check to see if iocb matches the nport we are
1898 * looking for
1899 */
92d7f7b0
JS		 1900 if ((lpfc_check_sli_ndlp(phba, pring, iocb,
1901 ndlp))) {
dea3101e 1902 /* It matches, so deque and call compl
1903 with an error */
2534ba75
JS		 1904 list_move_tail(&iocb->list,
1905 &completions);
dea3101e 1906 pring->txq_cnt--;
dea3101e 1907 }
1908 }
2e0fef85 1909 spin_unlock_irq(&phba->hbalock);
dea3101e 1910 }
1911 }
2534ba75
JS		 1912
1913 while (!list_empty(&completions)) {
1914 iocb = list_get_first(&completions, struct lpfc_iocbq, list);
92d7f7b0 1915 list_del_init(&iocb->list);
2534ba75 1916
2e0fef85
JS		 1917 if (!iocb->iocb_cmpl)
1918 lpfc_sli_release_iocbq(phba, iocb);
1919 else {
2534ba75
JS		 1920 icmd = &iocb->iocb;
1921 icmd->ulpStatus = IOSTAT_LOCAL_REJECT;
1922 icmd->un.ulpWord[4] = IOERR_SLI_ABORTED;
2e0fef85
JS		 1923 (iocb->iocb_cmpl)(phba, iocb, iocb);
1924 }
2534ba75
JS		 1925 }
1926
2fe165b6 1927 return 0;
dea3101e 1928}
1929
1930/*
1931 * Free rpi associated with LPFC_NODELIST entry.
1932 * This routine is called from lpfc_freenode(), when we are removing
1933 * a LPFC_NODELIST entry. It is also called if the driver initiates a
1934 * LOGO that completes successfully, and we are waiting to PLOGI back
1935 * to the remote NPort. In addition, it is called after we receive
1936 * and unsolicated ELS cmd, send back a rsp, the rsp completes and
1937 * we are waiting to PLOGI back to the remote NPort.
1938 */
1939int
2e0fef85 1940lpfc_unreg_rpi(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
dea3101e 1941{
2e0fef85
JS		 1942 struct lpfc_hba *phba = vport->phba;
1943 LPFC_MBOXQ_t *mbox;
dea3101e 1944 int rc;
1945
1946 if (ndlp->nlp_rpi) {
2e0fef85
JS		 1947 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1948 if (mbox) {
92d7f7b0 1949 lpfc_unreg_login(phba, vport->vpi, ndlp->nlp_rpi, mbox);
ed957684 1950 mbox->vport = vport;
92d7f7b0 1951 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
0b727fea 1952 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
dea3101e 1953 if (rc == MBX_NOT_FINISHED)
2e0fef85 1954 mempool_free(mbox, phba->mbox_mem_pool);
dea3101e 1955 }
dea3101e 1956 lpfc_no_rpi(phba, ndlp);
1957 ndlp->nlp_rpi = 0;
1958 return 1;
1959 }
1960 return 0;
1961}
1962
92d7f7b0
JS		 1963void
1964lpfc_unreg_all_rpis(struct lpfc_vport *vport)
1965{
1966 struct lpfc_hba *phba = vport->phba;
1967 LPFC_MBOXQ_t *mbox;
1968 int rc;
1969
1970 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1971 if (mbox) {
1972 lpfc_unreg_login(phba, vport->vpi, 0xffff, mbox);
1973 mbox->vport = vport;
1974 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
09372820
JS		 1975 mbox->context1 = NULL;
1976 rc = lpfc_sli_issue_mbox_wait(phba, mbox, LPFC_MBOX_TMO);
92d7f7b0
JS		 1977 if (rc == MBX_NOT_FINISHED) {
1978 mempool_free(mbox, phba->mbox_mem_pool);
1979 }
1980 }
1981}
1982
1983void
1984lpfc_unreg_default_rpis(struct lpfc_vport *vport)
1985{
1986 struct lpfc_hba *phba = vport->phba;
1987 LPFC_MBOXQ_t *mbox;
1988 int rc;
1989
1990 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1991 if (mbox) {
1992 lpfc_unreg_did(phba, vport->vpi, 0xffffffff, mbox);
1993 mbox->vport = vport;
1994 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
09372820
JS		 1995 mbox->context1 = NULL;
1996 rc = lpfc_sli_issue_mbox_wait(phba, mbox, LPFC_MBOX_TMO);
92d7f7b0 1997 if (rc == MBX_NOT_FINISHED) {
e8b62011
JS		 1998 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX | LOG_VPORT,
1999 "1815 Could not issue "
2000 "unreg_did (default rpis)\n");
92d7f7b0
JS		 2001 mempool_free(mbox, phba->mbox_mem_pool);
2002 }
2003 }
2004}
2005
dea3101e 2006/*
2007 * Free resources associated with LPFC_NODELIST entry
2008 * so it can be freed.
2009 */
2010static int
2e0fef85 2011lpfc_cleanup_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
dea3101e 2012{
2e0fef85
JS		 2013 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2014 struct lpfc_hba *phba = vport->phba;
2015 LPFC_MBOXQ_t *mb, *nextmb;
dea3101e 2016 struct lpfc_dmabuf *mp;
dea3101e 2017
2018 /* Cleanup node for NPort <nlp_DID> */
e8b62011
JS		 2019 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
2020 "0900 Cleanup node for NPort x%x "
2021 "Data: x%x x%x x%x\n",
2022 ndlp->nlp_DID, ndlp->nlp_flag,
2023 ndlp->nlp_state, ndlp->nlp_rpi);
e47c9093
JS		 2024 if (NLP_CHK_FREE_REQ(ndlp)) {
2025 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NODE,
2026 "0280 lpfc_cleanup_node: ndlp:x%p "
2027 "usgmap:x%x refcnt:%d\n",
2028 (void *)ndlp, ndlp->nlp_usg_map,
2029 atomic_read(&ndlp->kref.refcount));
2030 lpfc_dequeue_node(vport, ndlp);
2031 } else {
2032 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NODE,
2033 "0281 lpfc_cleanup_node: ndlp:x%p "
2034 "usgmap:x%x refcnt:%d\n",
2035 (void *)ndlp, ndlp->nlp_usg_map,
2036 atomic_read(&ndlp->kref.refcount));
2037 lpfc_disable_node(vport, ndlp);
2038 }
dea3101e 2039
dea3101e 2040 /* cleanup any ndlp on mbox q waiting for reglogin cmpl */
2041 if ((mb = phba->sli.mbox_active)) {
2042 if ((mb->mb.mbxCommand == MBX_REG_LOGIN64) &&
2043 (ndlp == (struct lpfc_nodelist *) mb->context2)) {
2044 mb->context2 = NULL;
2045 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
2046 }
2047 }
33ccf8d1 2048
2e0fef85 2049 spin_lock_irq(&phba->hbalock);
dea3101e 2050 list_for_each_entry_safe(mb, nextmb, &phba->sli.mboxq, list) {
2051 if ((mb->mb.mbxCommand == MBX_REG_LOGIN64) &&
92d7f7b0 2052 (ndlp == (struct lpfc_nodelist *) mb->context2)) {
dea3101e 2053 mp = (struct lpfc_dmabuf *) (mb->context1);
2054 if (mp) {
2e0fef85 2055 __lpfc_mbuf_free(phba, mp->virt, mp->phys);
dea3101e 2056 kfree(mp);
2057 }
2058 list_del(&mb->list);
2059 mempool_free(mb, phba->mbox_mem_pool);
e47c9093
JS		 2060 /* We shall not invoke the lpfc_nlp_put to decrement
2061 * the ndlp reference count as we are in the process
2062 * of lpfc_nlp_release.
2063 */
dea3101e 2064 }
2065 }
2e0fef85 2066 spin_unlock_irq(&phba->hbalock);
dea3101e 2067
e47c9093
JS		 2068 lpfc_els_abort(phba, ndlp);
2069
2e0fef85 2070 spin_lock_irq(shost->host_lock);
c01f3208 2071 ndlp->nlp_flag &= ~NLP_DELAY_TMO;
2e0fef85 2072 spin_unlock_irq(shost->host_lock);
dea3101e 2073
5024ab17 2074 ndlp->nlp_last_elscmd = 0;
dea3101e 2075 del_timer_sync(&ndlp->nlp_delayfunc);
2076
0d2b6b83
JS		 2077 list_del_init(&ndlp->els_retry_evt.evt_listp);
2078 list_del_init(&ndlp->dev_loss_evt.evt_listp);
dea3101e 2079
2e0fef85 2080 lpfc_unreg_rpi(vport, ndlp);
dea3101e 2081
2fe165b6 2082 return 0;
dea3101e 2083}
2084
2085/*
2086 * Check to see if we can free the nlp back to the freelist.
2087 * If we are in the middle of using the nlp in the discovery state
2088 * machine, defer the free till we reach the end of the state machine.
2089 */
329f9bc7 2090static void
2e0fef85 2091lpfc_nlp_remove(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
dea3101e 2092{
a8adb832 2093 struct lpfc_hba *phba = vport->phba;
1dcb58e5 2094 struct lpfc_rport_data *rdata;
a8adb832
JS		 2095 LPFC_MBOXQ_t *mbox;
2096 int rc;
dea3101e 2097
0d2b6b83 2098 lpfc_cancel_retry_delay_tmo(vport, ndlp);
a8adb832
JS		 2099 if (ndlp->nlp_flag & NLP_DEFER_RM && !ndlp->nlp_rpi) {
2100 /* For this case we need to cleanup the default rpi
2101 * allocated by the firmware.
2102 */
2103 if ((mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL))
2104 != NULL) {
2105 rc = lpfc_reg_login(phba, vport->vpi, ndlp->nlp_DID,
2106 (uint8_t *) &vport->fc_sparam, mbox, 0);
2107 if (rc) {
2108 mempool_free(mbox, phba->mbox_mem_pool);
2109 }
2110 else {
2111 mbox->mbox_flag |= LPFC_MBX_IMED_UNREG;
2112 mbox->mbox_cmpl = lpfc_mbx_cmpl_dflt_rpi;
2113 mbox->vport = vport;
09372820 2114 mbox->context2 = NULL;
a8adb832
JS		 2115 rc =lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
2116 if (rc == MBX_NOT_FINISHED) {
2117 mempool_free(mbox, phba->mbox_mem_pool);
2118 }
2119 }
2120 }
2121 }
2e0fef85 2122 lpfc_cleanup_node(vport, ndlp);
1dcb58e5 2123
2e0fef85 2124 /*
92d7f7b0
JS		 2125 * We can get here with a non-NULL ndlp->rport because when we
2126 * unregister a rport we don't break the rport/node linkage. So if we
2127 * do, make sure we don't leaving any dangling pointers behind.
2e0fef85 2128 */
92d7f7b0 2129 if (ndlp->rport) {
329f9bc7
JS		 2130 rdata = ndlp->rport->dd_data;
2131 rdata->pnode = NULL;
2132 ndlp->rport = NULL;
dea3101e 2133 }
dea3101e 2134}
2135
2136static int
2e0fef85
JS		 2137lpfc_matchdid(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2138 uint32_t did)
dea3101e 2139{
2e0fef85 2140 D_ID mydid, ndlpdid, matchdid;
dea3101e 2141
2142 if (did == Bcast_DID)
2fe165b6 2143 return 0;
dea3101e 2144
dea3101e 2145 /* First check for Direct match */
2146 if (ndlp->nlp_DID == did)
2fe165b6 2147 return 1;
dea3101e 2148
2149 /* Next check for area/domain identically equals 0 match */
2e0fef85 2150 mydid.un.word = vport->fc_myDID;
dea3101e 2151 if ((mydid.un.b.domain == 0) && (mydid.un.b.area == 0)) {
2fe165b6 2152 return 0;
dea3101e 2153 }
2154
2155 matchdid.un.word = did;
2156 ndlpdid.un.word = ndlp->nlp_DID;
2157 if (matchdid.un.b.id == ndlpdid.un.b.id) {
2158 if ((mydid.un.b.domain == matchdid.un.b.domain) &&
2159 (mydid.un.b.area == matchdid.un.b.area)) {
2160 if ((ndlpdid.un.b.domain == 0) &&
2161 (ndlpdid.un.b.area == 0)) {
2162 if (ndlpdid.un.b.id)
2fe165b6 2163 return 1;
dea3101e 2164 }
2fe165b6 2165 return 0;
dea3101e 2166 }
2167
2168 matchdid.un.word = ndlp->nlp_DID;
2169 if ((mydid.un.b.domain == ndlpdid.un.b.domain) &&
2170 (mydid.un.b.area == ndlpdid.un.b.area)) {
2171 if ((matchdid.un.b.domain == 0) &&
2172 (matchdid.un.b.area == 0)) {
2173 if (matchdid.un.b.id)
2fe165b6 2174 return 1;
dea3101e 2175 }
2176 }
2177 }
2fe165b6 2178 return 0;
dea3101e 2179}
2180
685f0bf7 2181/* Search for a nodelist entry */
2e0fef85
JS		 2182static struct lpfc_nodelist *
2183__lpfc_findnode_did(struct lpfc_vport *vport, uint32_t did)
dea3101e 2184{
2fb9bd8b 2185 struct lpfc_nodelist *ndlp;
dea3101e 2186 uint32_t data1;
2187
2e0fef85
JS		 2188 list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
2189 if (lpfc_matchdid(vport, ndlp, did)) {
685f0bf7
JS		 2190 data1 = (((uint32_t) ndlp->nlp_state << 24) |
2191 ((uint32_t) ndlp->nlp_xri << 16) |
2192 ((uint32_t) ndlp->nlp_type << 8) |
2193 ((uint32_t) ndlp->nlp_rpi & 0xff));
e8b62011
JS		 2194 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
2195 "0929 FIND node DID "
2196 "Data: x%p x%x x%x x%x\n",
2197 ndlp, ndlp->nlp_DID,
2198 ndlp->nlp_flag, data1);
685f0bf7 2199 return ndlp;
dea3101e 2200 }
2201 }
66a9ed66 2202
dea3101e 2203 /* FIND node did <did> NOT FOUND */
e8b62011
JS		 2204 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
2205 "0932 FIND node did x%x NOT FOUND.\n", did);
dea3101e 2206 return NULL;
2207}
2208
2209struct lpfc_nodelist *
2e0fef85
JS		 2210lpfc_findnode_did(struct lpfc_vport *vport, uint32_t did)
2211{
2212 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2213 struct lpfc_nodelist *ndlp;
2214
2215 spin_lock_irq(shost->host_lock);
2216 ndlp = __lpfc_findnode_did(vport, did);
2217 spin_unlock_irq(shost->host_lock);
2218 return ndlp;
2219}
2220
2221struct lpfc_nodelist *
2222lpfc_setup_disc_node(struct lpfc_vport *vport, uint32_t did)
dea3101e 2223{
2e0fef85 2224 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
dea3101e 2225 struct lpfc_nodelist *ndlp;
dea3101e 2226
2e0fef85 2227 ndlp = lpfc_findnode_did(vport, did);
c9f8735b 2228 if (!ndlp) {
2e0fef85
JS		 2229 if ((vport->fc_flag & FC_RSCN_MODE) != 0 &&
2230 lpfc_rscn_payload_check(vport, did) == 0)
dea3101e 2231 return NULL;
2232 ndlp = (struct lpfc_nodelist *)
2e0fef85 2233 mempool_alloc(vport->phba->nlp_mem_pool, GFP_KERNEL);
dea3101e 2234 if (!ndlp)
2235 return NULL;
2e0fef85
JS		 2236 lpfc_nlp_init(vport, ndlp, did);
2237 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
2238 spin_lock_irq(shost->host_lock);
dea3101e 2239 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
2e0fef85 2240 spin_unlock_irq(shost->host_lock);
dea3101e 2241 return ndlp;
e47c9093
JS		 2242 } else if (!NLP_CHK_NODE_ACT(ndlp)) {
2243 ndlp = lpfc_enable_node(vport, ndlp, NLP_STE_NPR_NODE);
2244 if (!ndlp)
2245 return NULL;
2246 spin_lock_irq(shost->host_lock);
2247 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
2248 spin_unlock_irq(shost->host_lock);
2249 return ndlp;
dea3101e 2250 }
e47c9093 2251
58da1ffb
JS		 2252 if ((vport->fc_flag & FC_RSCN_MODE) &&
2253 !(vport->fc_flag & FC_NDISC_ACTIVE)) {
2e0fef85 2254 if (lpfc_rscn_payload_check(vport, did)) {
87af33fe
JS		 2255 /* If we've already recieved a PLOGI from this NPort
2256 * we don't need to try to discover it again.
2257 */
2258 if (ndlp->nlp_flag & NLP_RCV_PLOGI)
2259 return NULL;
2260
2e0fef85 2261 spin_lock_irq(shost->host_lock);
dea3101e 2262 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
2e0fef85 2263 spin_unlock_irq(shost->host_lock);
c9f8735b
JW		 2264
2265 /* Since this node is marked for discovery,
2266 * delay timeout is not needed.
2267 */
0d2b6b83 2268 lpfc_cancel_retry_delay_tmo(vport, ndlp);
071fbd3d 2269 } else
dea3101e 2270 ndlp = NULL;
2fe165b6 2271 } else {
87af33fe
JS		 2272 /* If we've already recieved a PLOGI from this NPort,
2273 * or we are already in the process of discovery on it,
2274 * we don't need to try to discover it again.
2275 */
685f0bf7 2276 if (ndlp->nlp_state == NLP_STE_ADISC_ISSUE ||
87af33fe
JS		 2277 ndlp->nlp_state == NLP_STE_PLOGI_ISSUE ||
2278 ndlp->nlp_flag & NLP_RCV_PLOGI)
dea3101e 2279 return NULL;
2e0fef85
JS		 2280 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
2281 spin_lock_irq(shost->host_lock);
dea3101e 2282 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
2e0fef85 2283 spin_unlock_irq(shost->host_lock);
dea3101e 2284 }
2285 return ndlp;
2286}
2287
2288/* Build a list of nodes to discover based on the loopmap */
2289void
2e0fef85 2290lpfc_disc_list_loopmap(struct lpfc_vport *vport)
dea3101e 2291{
2e0fef85 2292 struct lpfc_hba *phba = vport->phba;
dea3101e 2293 int j;
2294 uint32_t alpa, index;
2295
2e0fef85 2296 if (!lpfc_is_link_up(phba))
dea3101e 2297 return;
2e0fef85
JS		 2298
2299 if (phba->fc_topology != TOPOLOGY_LOOP)
dea3101e 2300 return;
dea3101e 2301
2302 /* Check for loop map present or not */
2303 if (phba->alpa_map[0]) {
2304 for (j = 1; j <= phba->alpa_map[0]; j++) {
2305 alpa = phba->alpa_map[j];
2e0fef85 2306 if (((vport->fc_myDID & 0xff) == alpa) || (alpa == 0))
dea3101e 2307 continue;
2e0fef85 2308 lpfc_setup_disc_node(vport, alpa);
dea3101e 2309 }
2310 } else {
2311 /* No alpamap, so try all alpa's */
2312 for (j = 0; j < FC_MAXLOOP; j++) {
2313 /* If cfg_scan_down is set, start from highest
2314 * ALPA (0xef) to lowest (0x1).
2315 */
3de2a653 2316 if (vport->cfg_scan_down)
dea3101e 2317 index = j;
2318 else
2319 index = FC_MAXLOOP - j - 1;
2320 alpa = lpfcAlpaArray[index];
2e0fef85 2321 if ((vport->fc_myDID & 0xff) == alpa)
dea3101e 2322 continue;
2e0fef85 2323 lpfc_setup_disc_node(vport, alpa);
dea3101e 2324 }
2325 }
2326 return;
2327}
2328
dea3101e 2329void
2e0fef85 2330lpfc_issue_clear_la(struct lpfc_hba *phba, struct lpfc_vport *vport)
dea3101e 2331{
dea3101e 2332 LPFC_MBOXQ_t *mbox;
2e0fef85
JS		 2333 struct lpfc_sli *psli = &phba->sli;
2334 struct lpfc_sli_ring *extra_ring = &psli->ring[psli->extra_ring];
2335 struct lpfc_sli_ring *fcp_ring = &psli->ring[psli->fcp_ring];
2336 struct lpfc_sli_ring *next_ring = &psli->ring[psli->next_ring];
2337 int rc;
2338
92d7f7b0
JS		 2339 /*
2340 * if it's not a physical port or if we already send
2341 * clear_la then don't send it.
2342 */
2343 if ((phba->link_state >= LPFC_CLEAR_LA) ||
2344 (vport->port_type != LPFC_PHYSICAL_PORT))
2345 return;
2346
2e0fef85
JS		 2347 /* Link up discovery */
2348 if ((mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL)) != NULL) {
2349 phba->link_state = LPFC_CLEAR_LA;
2350 lpfc_clear_la(phba, mbox);
2351 mbox->mbox_cmpl = lpfc_mbx_cmpl_clear_la;
2352 mbox->vport = vport;
0b727fea 2353 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
2e0fef85
JS		 2354 if (rc == MBX_NOT_FINISHED) {
2355 mempool_free(mbox, phba->mbox_mem_pool);
2356 lpfc_disc_flush_list(vport);
2357 extra_ring->flag &= ~LPFC_STOP_IOCB_EVENT;
2358 fcp_ring->flag &= ~LPFC_STOP_IOCB_EVENT;
2359 next_ring->flag &= ~LPFC_STOP_IOCB_EVENT;
92d7f7b0
JS		 2360 phba->link_state = LPFC_HBA_ERROR;
2361 }
2362 }
2363}
2364
2365/* Reg_vpi to tell firmware to resume normal operations */
2366void
2367lpfc_issue_reg_vpi(struct lpfc_hba *phba, struct lpfc_vport *vport)
2368{
2369 LPFC_MBOXQ_t *regvpimbox;
2370
2371 regvpimbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
2372 if (regvpimbox) {
2373 lpfc_reg_vpi(phba, vport->vpi, vport->fc_myDID, regvpimbox);
2374 regvpimbox->mbox_cmpl = lpfc_mbx_cmpl_reg_vpi;
2375 regvpimbox->vport = vport;
0b727fea 2376 if (lpfc_sli_issue_mbox(phba, regvpimbox, MBX_NOWAIT)
92d7f7b0
JS		 2377 == MBX_NOT_FINISHED) {
2378 mempool_free(regvpimbox, phba->mbox_mem_pool);
2e0fef85
JS		 2379 }
2380 }
2381}
2382
2383/* Start Link up / RSCN discovery on NPR nodes */
2384void
2385lpfc_disc_start(struct lpfc_vport *vport)
2386{
2387 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2388 struct lpfc_hba *phba = vport->phba;
685f0bf7 2389 uint32_t num_sent;
dea3101e 2390 uint32_t clear_la_pending;
685f0bf7 2391 int did_changed;
dea3101e 2392
2e0fef85 2393 if (!lpfc_is_link_up(phba))
dea3101e 2394 return;
2e0fef85
JS		 2395
2396 if (phba->link_state == LPFC_CLEAR_LA)
dea3101e 2397 clear_la_pending = 1;
2398 else
2399 clear_la_pending = 0;
2400
2e0fef85
JS		 2401 if (vport->port_state < LPFC_VPORT_READY)
2402 vport->port_state = LPFC_DISC_AUTH;
dea3101e 2403
2e0fef85
JS		 2404 lpfc_set_disctmo(vport);
2405
2406 if (vport->fc_prevDID == vport->fc_myDID)
dea3101e 2407 did_changed = 0;
2e0fef85 2408 else
dea3101e 2409 did_changed = 1;
2e0fef85
JS		 2410
2411 vport->fc_prevDID = vport->fc_myDID;
2412 vport->num_disc_nodes = 0;
dea3101e 2413
2414 /* Start Discovery state <hba_state> */
e8b62011
JS		 2415 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
2416 "0202 Start Discovery hba state x%x "
2417 "Data: x%x x%x x%x\n",
2418 vport->port_state, vport->fc_flag, vport->fc_plogi_cnt,
2419 vport->fc_adisc_cnt);
dea3101e 2420
2421 /* First do ADISCs - if any */
2e0fef85 2422 num_sent = lpfc_els_disc_adisc(vport);
dea3101e 2423
2424 if (num_sent)
2425 return;
2426
92d7f7b0
JS		 2427 /*
2428 * For SLI3, cmpl_reg_vpi will set port_state to READY, and
2429 * continue discovery.
2430 */
2431 if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
1b32f6aa 2432 !(vport->fc_flag & FC_PT2PT) &&
92d7f7b0
JS		 2433 !(vport->fc_flag & FC_RSCN_MODE)) {
2434 lpfc_issue_reg_vpi(phba, vport);
2435 return;
2436 }
2437
2438 /*
2439 * For SLI2, we need to set port_state to READY and continue
2440 * discovery.
2441 */
2e0fef85 2442 if (vport->port_state < LPFC_VPORT_READY && !clear_la_pending) {
dea3101e 2443 /* If we get here, there is nothing to ADISC */
92d7f7b0 2444 if (vport->port_type == LPFC_PHYSICAL_PORT)
2e0fef85 2445 lpfc_issue_clear_la(phba, vport);
2e0fef85 2446
92d7f7b0 2447 if (!(vport->fc_flag & FC_ABORT_DISCOVERY)) {
2e0fef85
JS		 2448 vport->num_disc_nodes = 0;
2449 /* go thru NPR nodes and issue ELS PLOGIs */
2450 if (vport->fc_npr_cnt)
2451 lpfc_els_disc_plogi(vport);
2452
2453 if (!vport->num_disc_nodes) {
2454 spin_lock_irq(shost->host_lock);
2455 vport->fc_flag &= ~FC_NDISC_ACTIVE;
2456 spin_unlock_irq(shost->host_lock);
92d7f7b0 2457 lpfc_can_disctmo(vport);
dea3101e 2458 }
2459 }
92d7f7b0 2460 vport->port_state = LPFC_VPORT_READY;
dea3101e 2461 } else {
2462 /* Next do PLOGIs - if any */
2e0fef85 2463 num_sent = lpfc_els_disc_plogi(vport);
dea3101e 2464
2465 if (num_sent)
2466 return;
2467
2e0fef85 2468 if (vport->fc_flag & FC_RSCN_MODE) {
dea3101e 2469 /* Check to see if more RSCNs came in while we
2470 * were processing this one.
2471 */
2e0fef85
JS		 2472 if ((vport->fc_rscn_id_cnt == 0) &&
2473 (!(vport->fc_flag & FC_RSCN_DISCOVERY))) {
2474 spin_lock_irq(shost->host_lock);
2475 vport->fc_flag &= ~FC_RSCN_MODE;
2476 spin_unlock_irq(shost->host_lock);
92d7f7b0 2477 lpfc_can_disctmo(vport);
2fe165b6 2478 } else
2e0fef85 2479 lpfc_els_handle_rscn(vport);
dea3101e 2480 }
2481 }
2482 return;
2483}
2484
2485/*
2486 * Ignore completion for all IOCBs on tx and txcmpl queue for ELS
2487 * ring the match the sppecified nodelist.
2488 */
2489static void
2e0fef85 2490lpfc_free_tx(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
dea3101e 2491{
2534ba75 2492 LIST_HEAD(completions);
dea3101e 2493 struct lpfc_sli *psli;
2494 IOCB_t *icmd;
2495 struct lpfc_iocbq *iocb, *next_iocb;
2496 struct lpfc_sli_ring *pring;
dea3101e 2497
2498 psli = &phba->sli;
2499 pring = &psli->ring[LPFC_ELS_RING];
2500
2501 /* Error matching iocb on txq or txcmplq
2502 * First check the txq.
2503 */
2e0fef85 2504 spin_lock_irq(&phba->hbalock);
dea3101e 2505 list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) {
2506 if (iocb->context1 != ndlp) {
2507 continue;
2508 }
2509 icmd = &iocb->iocb;
2510 if ((icmd->ulpCommand == CMD_ELS_REQUEST64_CR) ||
2511 (icmd->ulpCommand == CMD_XMIT_ELS_RSP64_CX)) {
2512
2534ba75 2513 list_move_tail(&iocb->list, &completions);
dea3101e 2514 pring->txq_cnt--;
dea3101e 2515 }
2516 }
2517
2518 /* Next check the txcmplq */
2519 list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq, list) {
2520 if (iocb->context1 != ndlp) {
2521 continue;
2522 }
2523 icmd = &iocb->iocb;
2e0fef85
JS		 2524 if (icmd->ulpCommand == CMD_ELS_REQUEST64_CR ||
2525 icmd->ulpCommand == CMD_XMIT_ELS_RSP64_CX) {
2534ba75
JS		 2526 lpfc_sli_issue_abort_iotag(phba, pring, iocb);
2527 }
2528 }
2e0fef85 2529 spin_unlock_irq(&phba->hbalock);
dea3101e 2530
2534ba75
JS		 2531 while (!list_empty(&completions)) {
2532 iocb = list_get_first(&completions, struct lpfc_iocbq, list);
92d7f7b0 2533 list_del_init(&iocb->list);
dea3101e 2534
2e0fef85
JS		 2535 if (!iocb->iocb_cmpl)
2536 lpfc_sli_release_iocbq(phba, iocb);
2537 else {
2534ba75
JS		 2538 icmd = &iocb->iocb;
2539 icmd->ulpStatus = IOSTAT_LOCAL_REJECT;
2540 icmd->un.ulpWord[4] = IOERR_SLI_ABORTED;
2541 (iocb->iocb_cmpl) (phba, iocb, iocb);
2e0fef85 2542 }
dea3101e 2543 }
dea3101e 2544}
2545
a6ababd2 2546static void
2e0fef85 2547lpfc_disc_flush_list(struct lpfc_vport *vport)
dea3101e 2548{
2549 struct lpfc_nodelist *ndlp, *next_ndlp;
2e0fef85 2550 struct lpfc_hba *phba = vport->phba;
dea3101e 2551
2e0fef85
JS		 2552 if (vport->fc_plogi_cnt || vport->fc_adisc_cnt) {
2553 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes,
685f0bf7 2554 nlp_listp) {
e47c9093
JS		 2555 if (!NLP_CHK_NODE_ACT(ndlp))
2556 continue;
685f0bf7
JS		 2557 if (ndlp->nlp_state == NLP_STE_PLOGI_ISSUE ||
2558 ndlp->nlp_state == NLP_STE_ADISC_ISSUE) {
2559 lpfc_free_tx(phba, ndlp);
685f0bf7 2560 }
dea3101e 2561 }
2562 }
dea3101e 2563}
2564
92d7f7b0
JS		 2565void
2566lpfc_cleanup_discovery_resources(struct lpfc_vport *vport)
2567{
2568 lpfc_els_flush_rscn(vport);
2569 lpfc_els_flush_cmd(vport);
2570 lpfc_disc_flush_list(vport);
2571}
2572
dea3101e 2573/*****************************************************************************/
2574/*
2575 * NAME: lpfc_disc_timeout
2576 *
2577 * FUNCTION: Fibre Channel driver discovery timeout routine.
2578 *
2579 * EXECUTION ENVIRONMENT: interrupt only
2580 *
2581 * CALLED FROM:
2582 * Timer function
2583 *
2584 * RETURNS:
2585 * none
2586 */
2587/*****************************************************************************/
2588void
2589lpfc_disc_timeout(unsigned long ptr)
2590{
2e0fef85
JS		 2591 struct lpfc_vport *vport = (struct lpfc_vport *) ptr;
2592 struct lpfc_hba *phba = vport->phba;
5e9d9b82 2593 uint32_t tmo_posted;
dea3101e 2594 unsigned long flags = 0;
2595
2596 if (unlikely(!phba))
2597 return;
2598
5e9d9b82
JS		 2599 spin_lock_irqsave(&vport->work_port_lock, flags);
2600 tmo_posted = vport->work_port_events & WORKER_DISC_TMO;
2601 if (!tmo_posted)
2e0fef85 2602 vport->work_port_events |= WORKER_DISC_TMO;
5e9d9b82 2603 spin_unlock_irqrestore(&vport->work_port_lock, flags);
2e0fef85 2604
5e9d9b82
JS		 2605 if (!tmo_posted)
2606 lpfc_worker_wake_up(phba);
dea3101e 2607 return;
2608}
2609
2610static void
2e0fef85 2611lpfc_disc_timeout_handler(struct lpfc_vport *vport)
dea3101e 2612{
2e0fef85
JS		 2613 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2614 struct lpfc_hba *phba = vport->phba;
2615 struct lpfc_sli *psli = &phba->sli;
c9f8735b 2616 struct lpfc_nodelist *ndlp, *next_ndlp;
92d7f7b0 2617 LPFC_MBOXQ_t *initlinkmbox;
dea3101e 2618 int rc, clrlaerr = 0;
2619
2e0fef85 2620 if (!(vport->fc_flag & FC_DISC_TMO))
dea3101e 2621 return;
2622
2e0fef85
JS		 2623 spin_lock_irq(shost->host_lock);
2624 vport->fc_flag &= ~FC_DISC_TMO;
2625 spin_unlock_irq(shost->host_lock);
dea3101e 2626
858c9f6c
JS		 2627 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
2628 "disc timeout: state:x%x rtry:x%x flg:x%x",
2629 vport->port_state, vport->fc_ns_retry, vport->fc_flag);
2630
2e0fef85 2631 switch (vport->port_state) {
dea3101e 2632
2633 case LPFC_LOCAL_CFG_LINK:
2e0fef85
JS		 2634 /* port_state is identically LPFC_LOCAL_CFG_LINK while waiting for
2635 * FAN
2636 */
2637 /* FAN timeout */
e8b62011
JS		 2638 lpfc_printf_vlog(vport, KERN_WARNING, LOG_DISCOVERY,
2639 "0221 FAN timeout\n");
c9f8735b 2640 /* Start discovery by sending FLOGI, clean up old rpis */
2e0fef85 2641 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes,
685f0bf7 2642 nlp_listp) {
e47c9093
JS		 2643 if (!NLP_CHK_NODE_ACT(ndlp))
2644 continue;
685f0bf7
JS		 2645 if (ndlp->nlp_state != NLP_STE_NPR_NODE)
2646 continue;
c9f8735b
JW		 2647 if (ndlp->nlp_type & NLP_FABRIC) {
2648 /* Clean up the ndlp on Fabric connections */
2e0fef85 2649 lpfc_drop_node(vport, ndlp);
87af33fe 2650
2fe165b6 2651 } else if (!(ndlp->nlp_flag & NLP_NPR_ADISC)) {
c9f8735b
JW		 2652 /* Fail outstanding IO now since device
2653 * is marked for PLOGI.
2654 */
2e0fef85 2655 lpfc_unreg_rpi(vport, ndlp);
c9f8735b
JW		 2656 }
2657 }
92d7f7b0 2658 if (vport->port_state != LPFC_FLOGI) {
92d7f7b0 2659 lpfc_initial_flogi(vport);
0ff10d46 2660 return;
92d7f7b0 2661 }
dea3101e 2662 break;
2663
92d7f7b0 2664 case LPFC_FDISC:
dea3101e 2665 case LPFC_FLOGI:
2e0fef85 2666 /* port_state is identically LPFC_FLOGI while waiting for FLOGI cmpl */
dea3101e 2667 /* Initial FLOGI timeout */
e8b62011
JS		 2668 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
2669 "0222 Initial %s timeout\n",
87af33fe 2670 vport->vpi ? "FDISC" : "FLOGI");
dea3101e 2671
2672 /* Assume no Fabric and go on with discovery.
2673 * Check for outstanding ELS FLOGI to abort.
2674 */
2675
2676 /* FLOGI failed, so just use loop map to make discovery list */
2e0fef85 2677 lpfc_disc_list_loopmap(vport);
dea3101e 2678
2679 /* Start discovery */
2e0fef85 2680 lpfc_disc_start(vport);
dea3101e 2681 break;
2682
2683 case LPFC_FABRIC_CFG_LINK:
2684 /* hba_state is identically LPFC_FABRIC_CFG_LINK while waiting for
2685 NameServer login */
e8b62011
JS		 2686 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
2687 "0223 Timeout while waiting for "
2688 "NameServer login\n");
dea3101e 2689 /* Next look for NameServer ndlp */
2e0fef85 2690 ndlp = lpfc_findnode_did(vport, NameServer_DID);
e47c9093 2691 if (ndlp && NLP_CHK_NODE_ACT(ndlp))
87af33fe
JS		 2692 lpfc_els_abort(phba, ndlp);
2693
2694 /* ReStart discovery */
2695 goto restart_disc;
dea3101e 2696
2697 case LPFC_NS_QRY:
2698 /* Check for wait for NameServer Rsp timeout */
e8b62011
JS		 2699 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
2700 "0224 NameServer Query timeout "
2701 "Data: x%x x%x\n",
2702 vport->fc_ns_retry, LPFC_MAX_NS_RETRY);
dea3101e 2703
92d7f7b0
JS		 2704 if (vport->fc_ns_retry < LPFC_MAX_NS_RETRY) {
2705 /* Try it one more time */
2706 vport->fc_ns_retry++;
2707 rc = lpfc_ns_cmd(vport, SLI_CTNS_GID_FT,
2708 vport->fc_ns_retry, 0);
2709 if (rc == 0)
2710 break;
dea3101e 2711 }
92d7f7b0 2712 vport->fc_ns_retry = 0;
dea3101e 2713
87af33fe 2714restart_disc:
92d7f7b0
JS		 2715 /*
2716 * Discovery is over.
2717 * set port_state to PORT_READY if SLI2.
2718 * cmpl_reg_vpi will set port_state to READY for SLI3.
2719 */
2720 if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)
2721 lpfc_issue_reg_vpi(phba, vport);
2722 else { /* NPIV Not enabled */
2723 lpfc_issue_clear_la(phba, vport);
2724 vport->port_state = LPFC_VPORT_READY;
dea3101e 2725 }
2726
2727 /* Setup and issue mailbox INITIALIZE LINK command */
2728 initlinkmbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
2729 if (!initlinkmbox) {
e8b62011
JS		 2730 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
2731 "0206 Device Discovery "
2732 "completion error\n");
2e0fef85 2733 phba->link_state = LPFC_HBA_ERROR;
dea3101e 2734 break;
2735 }
2736
2737 lpfc_linkdown(phba);
2738 lpfc_init_link(phba, initlinkmbox, phba->cfg_topology,
2739 phba->cfg_link_speed);
2740 initlinkmbox->mb.un.varInitLnk.lipsr_AL_PA = 0;
ed957684 2741 initlinkmbox->vport = vport;
92d7f7b0 2742 initlinkmbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
0b727fea 2743 rc = lpfc_sli_issue_mbox(phba, initlinkmbox, MBX_NOWAIT);
5b8bd0c9 2744 lpfc_set_loopback_flag(phba);
dea3101e 2745 if (rc == MBX_NOT_FINISHED)
2746 mempool_free(initlinkmbox, phba->mbox_mem_pool);
2747
2748 break;
2749
2750 case LPFC_DISC_AUTH:
2751 /* Node Authentication timeout */
e8b62011
JS		 2752 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
2753 "0227 Node Authentication timeout\n");
2e0fef85
JS		 2754 lpfc_disc_flush_list(vport);
2755
92d7f7b0
JS		 2756 /*
2757 * set port_state to PORT_READY if SLI2.
2758 * cmpl_reg_vpi will set port_state to READY for SLI3.
2759 */
2760 if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)
2761 lpfc_issue_reg_vpi(phba, vport);
2762 else { /* NPIV Not enabled */
2763 lpfc_issue_clear_la(phba, vport);
2764 vport->port_state = LPFC_VPORT_READY;
dea3101e 2765 }
2766 break;
2767
2e0fef85
JS		 2768 case LPFC_VPORT_READY:
2769 if (vport->fc_flag & FC_RSCN_MODE) {
e8b62011
JS		 2770 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
2771 "0231 RSCN timeout Data: x%x "
2772 "x%x\n",
2773 vport->fc_ns_retry, LPFC_MAX_NS_RETRY);
dea3101e 2774
2775 /* Cleanup any outstanding ELS commands */
2e0fef85 2776 lpfc_els_flush_cmd(vport);
dea3101e 2777
2e0fef85
JS		 2778 lpfc_els_flush_rscn(vport);
2779 lpfc_disc_flush_list(vport);
dea3101e 2780 }
2781 break;
2e0fef85 2782
92d7f7b0 2783 default:
e8b62011
JS		 2784 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
2785 "0229 Unexpected discovery timeout, "
2786 "vport State x%x\n", vport->port_state);
2e0fef85
JS		 2787 break;
2788 }
2789
2790 switch (phba->link_state) {
2791 case LPFC_CLEAR_LA:
92d7f7b0 2792 /* CLEAR LA timeout */
e8b62011
JS		 2793 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
2794 "0228 CLEAR LA timeout\n");
2e0fef85
JS		 2795 clrlaerr = 1;
2796 break;
2797
09372820
JS		 2798 case LPFC_LINK_UP:
2799 lpfc_issue_clear_la(phba, vport);
2800 /* Drop thru */
2e0fef85
JS		 2801 case LPFC_LINK_UNKNOWN:
2802 case LPFC_WARM_START:
2803 case LPFC_INIT_START:
2804 case LPFC_INIT_MBX_CMDS:
2805 case LPFC_LINK_DOWN:
2e0fef85 2806 case LPFC_HBA_ERROR:
e8b62011
JS		 2807 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
2808 "0230 Unexpected timeout, hba link "
2809 "state x%x\n", phba->link_state);
2e0fef85
JS		 2810 clrlaerr = 1;
2811 break;
92d7f7b0
JS		 2812
2813 case LPFC_HBA_READY:
2814 break;
dea3101e 2815 }
2816
2817 if (clrlaerr) {
2e0fef85 2818 lpfc_disc_flush_list(vport);
a4bc3379 2819 psli->ring[(psli->extra_ring)].flag &= ~LPFC_STOP_IOCB_EVENT;
dea3101e 2820 psli->ring[(psli->fcp_ring)].flag &= ~LPFC_STOP_IOCB_EVENT;
2821 psli->ring[(psli->next_ring)].flag &= ~LPFC_STOP_IOCB_EVENT;
2e0fef85 2822 vport->port_state = LPFC_VPORT_READY;
dea3101e 2823 }
2824
2825 return;
2826}
2827
dea3101e 2828/*
2829 * This routine handles processing a NameServer REG_LOGIN mailbox
2830 * command upon completion. It is setup in the LPFC_MBOXQ
2831 * as the completion routine when the command is
2832 * handed off to the SLI layer.
2833 */
2834void
2e0fef85 2835lpfc_mbx_cmpl_fdmi_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
dea3101e 2836{
2e0fef85
JS		 2837 MAILBOX_t *mb = &pmb->mb;
2838 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
2839 struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) pmb->context2;
2840 struct lpfc_vport *vport = pmb->vport;
dea3101e 2841
2842 pmb->context1 = NULL;
2843
dea3101e 2844 ndlp->nlp_rpi = mb->un.varWords[0];
dea3101e 2845 ndlp->nlp_type |= NLP_FABRIC;
2e0fef85 2846 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
dea3101e 2847
2e0fef85
JS		 2848 /*
2849 * Start issuing Fabric-Device Management Interface (FDMI) command to
2850 * 0xfffffa (FDMI well known port) or Delay issuing FDMI command if
2851 * fdmi-on=2 (supporting RPA/hostnmae)
dea3101e 2852 */
2e0fef85 2853
3de2a653 2854 if (vport->cfg_fdmi_on == 1)
2e0fef85
JS		 2855 lpfc_fdmi_cmd(vport, ndlp, SLI_MGMT_DHBA);
2856 else
2857 mod_timer(&vport->fc_fdmitmo, jiffies + HZ * 60);
dea3101e 2858
fa4066b6
JS		 2859 /* decrement the node reference count held for this callback
2860 * function.
2861 */
329f9bc7 2862 lpfc_nlp_put(ndlp);
dea3101e 2863 lpfc_mbuf_free(phba, mp->virt, mp->phys);
2864 kfree(mp);
329f9bc7 2865 mempool_free(pmb, phba->mbox_mem_pool);
dea3101e 2866
2867 return;
2868}
2869
685f0bf7
JS		 2870static int
2871lpfc_filter_by_rpi(struct lpfc_nodelist *ndlp, void *param)
2872{
2873 uint16_t *rpi = param;
2874
2875 return ndlp->nlp_rpi == *rpi;
2876}
2877
2878static int
2879lpfc_filter_by_wwpn(struct lpfc_nodelist *ndlp, void *param)
2880{
2881 return memcmp(&ndlp->nlp_portname, param,
2882 sizeof(ndlp->nlp_portname)) == 0;
2883}
2884
a6ababd2 2885static struct lpfc_nodelist *
2e0fef85 2886__lpfc_find_node(struct lpfc_vport *vport, node_filter filter, void *param)
dea3101e 2887{
21568f53 2888 struct lpfc_nodelist *ndlp;
dea3101e 2889
2e0fef85 2890 list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
87af33fe 2891 if (filter(ndlp, param))
685f0bf7
JS		 2892 return ndlp;
2893 }
21568f53 2894 return NULL;
dea3101e 2895}
2896
685f0bf7
JS		 2897/*
2898 * This routine looks up the ndlp lists for the given RPI. If rpi found it
2e0fef85 2899 * returns the node list element pointer else return NULL.
685f0bf7
JS		 2900 */
2901struct lpfc_nodelist *
2e0fef85 2902__lpfc_findnode_rpi(struct lpfc_vport *vport, uint16_t rpi)
685f0bf7 2903{
2e0fef85 2904 return __lpfc_find_node(vport, lpfc_filter_by_rpi, &rpi);
685f0bf7
JS		 2905}
2906
488d1469 2907/*
685f0bf7 2908 * This routine looks up the ndlp lists for the given WWPN. If WWPN found it
2e0fef85 2909 * returns the node element list pointer else return NULL.
488d1469
JS		 2910 */
2911struct lpfc_nodelist *
2e0fef85 2912lpfc_findnode_wwpn(struct lpfc_vport *vport, struct lpfc_name *wwpn)
488d1469 2913{
2e0fef85 2914 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
488d1469 2915 struct lpfc_nodelist *ndlp;
488d1469 2916
2e0fef85
JS		 2917 spin_lock_irq(shost->host_lock);
2918 ndlp = __lpfc_find_node(vport, lpfc_filter_by_wwpn, wwpn);
2919 spin_unlock_irq(shost->host_lock);
858c9f6c 2920 return ndlp;
488d1469
JS		 2921}
2922
dea3101e 2923void
2e0fef85
JS		 2924lpfc_nlp_init(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2925 uint32_t did)
dea3101e 2926{
2927 memset(ndlp, 0, sizeof (struct lpfc_nodelist));
dea3101e 2928 INIT_LIST_HEAD(&ndlp->els_retry_evt.evt_listp);
92d7f7b0 2929 INIT_LIST_HEAD(&ndlp->dev_loss_evt.evt_listp);
dea3101e 2930 init_timer(&ndlp->nlp_delayfunc);
2931 ndlp->nlp_delayfunc.function = lpfc_els_retry_delay;
2932 ndlp->nlp_delayfunc.data = (unsigned long)ndlp;
2933 ndlp->nlp_DID = did;
2e0fef85 2934 ndlp->vport = vport;
dea3101e 2935 ndlp->nlp_sid = NLP_NO_SID;
685f0bf7 2936 INIT_LIST_HEAD(&ndlp->nlp_listp);
329f9bc7 2937 kref_init(&ndlp->kref);
e47c9093 2938 NLP_INT_NODE_ACT(ndlp);
858c9f6c
JS		 2939
2940 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE,
2941 "node init: did:x%x",
2942 ndlp->nlp_DID, 0, 0);
2943
dea3101e 2944 return;
2945}
329f9bc7 2946
98c9ea5c
JS		 2947/* This routine releases all resources associated with a specifc NPort's ndlp
2948 * and mempool_free's the nodelist.
2949 */
311464ec 2950static void
329f9bc7
JS		 2951lpfc_nlp_release(struct kref *kref)
2952{
e47c9093
JS		 2953 struct lpfc_hba *phba;
2954 unsigned long flags;
329f9bc7
JS		 2955 struct lpfc_nodelist *ndlp = container_of(kref, struct lpfc_nodelist,
2956 kref);
858c9f6c
JS		 2957
2958 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
2959 "node release: did:x%x flg:x%x type:x%x",
2960 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type);
2961
e47c9093
JS		 2962 lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_NODE,
2963 "0279 lpfc_nlp_release: ndlp:x%p "
2964 "usgmap:x%x refcnt:%d\n",
2965 (void *)ndlp, ndlp->nlp_usg_map,
2966 atomic_read(&ndlp->kref.refcount));
2967
2968 /* remove ndlp from action. */
2e0fef85 2969 lpfc_nlp_remove(ndlp->vport, ndlp);
e47c9093
JS		 2970
2971 /* clear the ndlp active flag for all release cases */
2972 phba = ndlp->vport->phba;
2973 spin_lock_irqsave(&phba->ndlp_lock, flags);
2974 NLP_CLR_NODE_ACT(ndlp);
2975 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
2976
2977 /* free ndlp memory for final ndlp release */
2978 if (NLP_CHK_FREE_REQ(ndlp))
2979 mempool_free(ndlp, ndlp->vport->phba->nlp_mem_pool);
329f9bc7
JS		 2980}
2981
98c9ea5c
JS		 2982/* This routine bumps the reference count for a ndlp structure to ensure
2983 * that one discovery thread won't free a ndlp while another discovery thread
2984 * is using it.
2985 */
329f9bc7
JS		 2986struct lpfc_nodelist *
2987lpfc_nlp_get(struct lpfc_nodelist *ndlp)
2988{
e47c9093
JS		 2989 struct lpfc_hba *phba;
2990 unsigned long flags;
2991
98c9ea5c
JS		 2992 if (ndlp) {
2993 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
2994 "node get: did:x%x flg:x%x refcnt:x%x",
2995 ndlp->nlp_DID, ndlp->nlp_flag,
2996 atomic_read(&ndlp->kref.refcount));
e47c9093
JS		 2997 /* The check of ndlp usage to prevent incrementing the
2998 * ndlp reference count that is in the process of being
2999 * released.
3000 */
3001 phba = ndlp->vport->phba;
3002 spin_lock_irqsave(&phba->ndlp_lock, flags);
3003 if (!NLP_CHK_NODE_ACT(ndlp) || NLP_CHK_FREE_ACK(ndlp)) {
3004 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
3005 lpfc_printf_vlog(ndlp->vport, KERN_WARNING, LOG_NODE,
3006 "0276 lpfc_nlp_get: ndlp:x%p "
3007 "usgmap:x%x refcnt:%d\n",
3008 (void *)ndlp, ndlp->nlp_usg_map,
3009 atomic_read(&ndlp->kref.refcount));
3010 return NULL;
3011 } else
3012 kref_get(&ndlp->kref);
3013 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
98c9ea5c 3014 }
329f9bc7
JS		 3015 return ndlp;
3016}
3017
98c9ea5c 3018/* This routine decrements the reference count for a ndlp structure. If the
e47c9093
JS		 3019 * count goes to 0, this indicates the the associated nodelist should be
3020 * freed. Returning 1 indicates the ndlp resource has been released; on the
3021 * other hand, returning 0 indicates the ndlp resource has not been released
3022 * yet.
98c9ea5c 3023 */
329f9bc7
JS		 3024int
3025lpfc_nlp_put(struct lpfc_nodelist *ndlp)
3026{
e47c9093
JS		 3027 struct lpfc_hba *phba;
3028 unsigned long flags;
3029
3030 if (!ndlp)
3031 return 1;
3032
3033 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
3034 "node put: did:x%x flg:x%x refcnt:x%x",
3035 ndlp->nlp_DID, ndlp->nlp_flag,
3036 atomic_read(&ndlp->kref.refcount));
3037 phba = ndlp->vport->phba;
3038 spin_lock_irqsave(&phba->ndlp_lock, flags);
3039 /* Check the ndlp memory free acknowledge flag to avoid the
3040 * possible race condition that kref_put got invoked again
3041 * after previous one has done ndlp memory free.
3042 */
3043 if (NLP_CHK_FREE_ACK(ndlp)) {
3044 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
3045 lpfc_printf_vlog(ndlp->vport, KERN_WARNING, LOG_NODE,
3046 "0274 lpfc_nlp_put: ndlp:x%p "
3047 "usgmap:x%x refcnt:%d\n",
3048 (void *)ndlp, ndlp->nlp_usg_map,
3049 atomic_read(&ndlp->kref.refcount));
3050 return 1;
3051 }
3052 /* Check the ndlp inactivate log flag to avoid the possible
3053 * race condition that kref_put got invoked again after ndlp
3054 * is already in inactivating state.
3055 */
3056 if (NLP_CHK_IACT_REQ(ndlp)) {
3057 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
3058 lpfc_printf_vlog(ndlp->vport, KERN_WARNING, LOG_NODE,
3059 "0275 lpfc_nlp_put: ndlp:x%p "
3060 "usgmap:x%x refcnt:%d\n",
3061 (void *)ndlp, ndlp->nlp_usg_map,
3062 atomic_read(&ndlp->kref.refcount));
3063 return 1;
98c9ea5c 3064 }
e47c9093
JS		 3065 /* For last put, mark the ndlp usage flags to make sure no
3066 * other kref_get and kref_put on the same ndlp shall get
3067 * in between the process when the final kref_put has been
3068 * invoked on this ndlp.
3069 */
3070 if (atomic_read(&ndlp->kref.refcount) == 1) {
3071 /* Indicate ndlp is put to inactive state. */
3072 NLP_SET_IACT_REQ(ndlp);
3073 /* Acknowledge ndlp memory free has been seen. */
3074 if (NLP_CHK_FREE_REQ(ndlp))
3075 NLP_SET_FREE_ACK(ndlp);
3076 }
3077 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
3078 /* Note, the kref_put returns 1 when decrementing a reference
3079 * count that was 1, it invokes the release callback function,
3080 * but it still left the reference count as 1 (not actually
3081 * performs the last decrementation). Otherwise, it actually
3082 * decrements the reference count and returns 0.
3083 */
3084 return kref_put(&ndlp->kref, lpfc_nlp_release);
329f9bc7 3085}
98c9ea5c
JS		 3086
3087/* This routine free's the specified nodelist if it is not in use
e47c9093
JS		 3088 * by any other discovery thread. This routine returns 1 if the
3089 * ndlp has been freed. A return value of 0 indicates the ndlp is
3090 * not yet been released.
98c9ea5c
JS		 3091 */
3092int
3093lpfc_nlp_not_used(struct lpfc_nodelist *ndlp)
3094{
3095 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
3096 "node not used: did:x%x flg:x%x refcnt:x%x",
3097 ndlp->nlp_DID, ndlp->nlp_flag,
3098 atomic_read(&ndlp->kref.refcount));
e47c9093
JS		 3099 if (atomic_read(&ndlp->kref.refcount) == 1)
3100 if (lpfc_nlp_put(ndlp))
3101 return 1;
98c9ea5c
JS		 3102 return 0;
3103}
Linux kernel - Deliverables
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