projects / deliverable / linux.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
Merge remote-tracking branch 'regmap/topic/core' into regmap-next
[deliverable/linux.git] / drivers / scsi / lpfc / lpfc_vport.c
CommitLineData
92d7f7b0
JS		 1/*******************************************************************
2 * This file is part of the Emulex Linux Device Driver for *
3 * Fibre Channel Host Bus Adapters. *
a89a96bd 4 * Copyright (C) 2004-2013 Emulex. All rights reserved. *
92d7f7b0
JS		 5 * EMULEX and SLI are trademarks of Emulex. *
6 * www.emulex.com *
7 * Portions Copyright (C) 2004-2005 Christoph Hellwig *
8 * *
9 * This program is free software; you can redistribute it and/or *
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. *
20 *******************************************************************/
21
22#include <linux/blkdev.h>
23#include <linux/delay.h>
24#include <linux/dma-mapping.h>
25#include <linux/idr.h>
26#include <linux/interrupt.h>
27#include <linux/kthread.h>
28#include <linux/pci.h>
5a0e3ad6 29#include <linux/slab.h>
92d7f7b0
JS		 30#include <linux/spinlock.h>
31
32#include <scsi/scsi.h>
33#include <scsi/scsi_device.h>
34#include <scsi/scsi_host.h>
35#include <scsi/scsi_transport_fc.h>
da0436e9 36#include "lpfc_hw4.h"
92d7f7b0
JS		 37#include "lpfc_hw.h"
38#include "lpfc_sli.h"
da0436e9 39#include "lpfc_sli4.h"
ea2151b4 40#include "lpfc_nl.h"
92d7f7b0
JS		 41#include "lpfc_disc.h"
42#include "lpfc_scsi.h"
43#include "lpfc.h"
44#include "lpfc_logmsg.h"
45#include "lpfc_crtn.h"
46#include "lpfc_version.h"
47#include "lpfc_vport.h"
48
49inline void lpfc_vport_set_state(struct lpfc_vport *vport,
50 enum fc_vport_state new_state)
51{
52 struct fc_vport *fc_vport = vport->fc_vport;
53
54 if (fc_vport) {
55 /*
56 * When the transport defines fc_vport_set state we will replace
57 * this code with the following line
58 */
59 /* fc_vport_set_state(fc_vport, new_state); */
60 if (new_state != FC_VPORT_INITIALIZING)
61 fc_vport->vport_last_state = fc_vport->vport_state;
62 fc_vport->vport_state = new_state;
63 }
64
65 /* for all the error states we will set the invternal state to FAILED */
66 switch (new_state) {
67 case FC_VPORT_NO_FABRIC_SUPP:
68 case FC_VPORT_NO_FABRIC_RSCS:
69 case FC_VPORT_FABRIC_LOGOUT:
70 case FC_VPORT_FABRIC_REJ_WWN:
71 case FC_VPORT_FAILED:
72 vport->port_state = LPFC_VPORT_FAILED;
73 break;
74 case FC_VPORT_LINKDOWN:
75 vport->port_state = LPFC_VPORT_UNKNOWN;
76 break;
77 default:
78 /* do nothing */
79 break;
80 }
81}
82
16a3a208 83int
92d7f7b0
JS		 84lpfc_alloc_vpi(struct lpfc_hba *phba)
85{
6d368e53 86 unsigned long vpi;
92d7f7b0
JS		 87
88 spin_lock_irq(&phba->hbalock);
858c9f6c
JS		 89 /* Start at bit 1 because vpi zero is reserved for the physical port */
90 vpi = find_next_zero_bit(phba->vpi_bmask, (phba->max_vpi + 1), 1);
92d7f7b0
JS		 91 if (vpi > phba->max_vpi)
92 vpi = 0;
93 else
94 set_bit(vpi, phba->vpi_bmask);
da0436e9
JS		 95 if (phba->sli_rev == LPFC_SLI_REV4)
96 phba->sli4_hba.max_cfg_param.vpi_used++;
92d7f7b0
JS		 97 spin_unlock_irq(&phba->hbalock);
98 return vpi;
99}
100
101static void
102lpfc_free_vpi(struct lpfc_hba *phba, int vpi)
103{
da0436e9
JS		 104 if (vpi == 0)
105 return;
92d7f7b0
JS		 106 spin_lock_irq(&phba->hbalock);
107 clear_bit(vpi, phba->vpi_bmask);
da0436e9
JS		 108 if (phba->sli_rev == LPFC_SLI_REV4)
109 phba->sli4_hba.max_cfg_param.vpi_used--;
92d7f7b0
JS		 110 spin_unlock_irq(&phba->hbalock);
111}
112
113static int
114lpfc_vport_sparm(struct lpfc_hba *phba, struct lpfc_vport *vport)
115{
116 LPFC_MBOXQ_t *pmb;
117 MAILBOX_t *mb;
118 struct lpfc_dmabuf *mp;
119 int rc;
120
121 pmb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
122 if (!pmb) {
123 return -ENOMEM;
124 }
f4b4c68f 125 mb = &pmb->u.mb;
92d7f7b0 126
9f1177a3
JS		 127 rc = lpfc_read_sparam(phba, pmb, vport->vpi);
128 if (rc) {
129 mempool_free(pmb, phba->mbox_mem_pool);
130 return -ENOMEM;
131 }
132
92d7f7b0
JS		 133 /*
134 * Grab buffer pointer and clear context1 so we can use
135 * lpfc_sli_issue_box_wait
136 */
137 mp = (struct lpfc_dmabuf *) pmb->context1;
138 pmb->context1 = NULL;
139
140 pmb->vport = vport;
141 rc = lpfc_sli_issue_mbox_wait(phba, pmb, phba->fc_ratov * 2);
142 if (rc != MBX_SUCCESS) {
98c9ea5c
JS		 143 if (signal_pending(current)) {
144 lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT | LOG_VPORT,
145 "1830 Signal aborted mbxCmd x%x\n",
146 mb->mbxCommand);
147 lpfc_mbuf_free(phba, mp->virt, mp->phys);
148 kfree(mp);
149 if (rc != MBX_TIMEOUT)
150 mempool_free(pmb, phba->mbox_mem_pool);
151 return -EINTR;
152 } else {
153 lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT | LOG_VPORT,
154 "1818 VPort failed init, mbxCmd x%x "
155 "READ_SPARM mbxStatus x%x, rc = x%x\n",
156 mb->mbxCommand, mb->mbxStatus, rc);
157 lpfc_mbuf_free(phba, mp->virt, mp->phys);
158 kfree(mp);
159 if (rc != MBX_TIMEOUT)
160 mempool_free(pmb, phba->mbox_mem_pool);
161 return -EIO;
162 }
92d7f7b0
JS		 163 }
164
165 memcpy(&vport->fc_sparam, mp->virt, sizeof (struct serv_parm));
166 memcpy(&vport->fc_nodename, &vport->fc_sparam.nodeName,
167 sizeof (struct lpfc_name));
168 memcpy(&vport->fc_portname, &vport->fc_sparam.portName,
169 sizeof (struct lpfc_name));
170
171 lpfc_mbuf_free(phba, mp->virt, mp->phys);
172 kfree(mp);
173 mempool_free(pmb, phba->mbox_mem_pool);
174
175 return 0;
176}
177
178static int
179lpfc_valid_wwn_format(struct lpfc_hba *phba, struct lpfc_name *wwn,
180 const char *name_type)
181{
182 /* ensure that IEEE format 1 addresses
183 * contain zeros in bits 59-48
184 */
185 if (!((wwn->u.wwn[0] >> 4) == 1 &&
186 ((wwn->u.wwn[0] & 0xf) != 0 || (wwn->u.wwn[1] & 0xf) != 0)))
187 return 1;
188
189 lpfc_printf_log(phba, KERN_ERR, LOG_VPORT,
e8b62011 190 "1822 Invalid %s: %02x:%02x:%02x:%02x:"
92d7f7b0 191 "%02x:%02x:%02x:%02x\n",
e8b62011 192 name_type,
92d7f7b0
JS		 193 wwn->u.wwn[0], wwn->u.wwn[1],
194 wwn->u.wwn[2], wwn->u.wwn[3],
195 wwn->u.wwn[4], wwn->u.wwn[5],
196 wwn->u.wwn[6], wwn->u.wwn[7]);
197 return 0;
198}
199
200static int
201lpfc_unique_wwpn(struct lpfc_hba *phba, struct lpfc_vport *new_vport)
202{
203 struct lpfc_vport *vport;
549e55cd 204 unsigned long flags;
92d7f7b0 205
549e55cd 206 spin_lock_irqsave(&phba->hbalock, flags);
92d7f7b0
JS		 207 list_for_each_entry(vport, &phba->port_list, listentry) {
208 if (vport == new_vport)
209 continue;
210 /* If they match, return not unique */
211 if (memcmp(&vport->fc_sparam.portName,
549e55cd
JS		 212 &new_vport->fc_sparam.portName,
213 sizeof(struct lpfc_name)) == 0) {
214 spin_unlock_irqrestore(&phba->hbalock, flags);
92d7f7b0 215 return 0;
549e55cd 216 }
92d7f7b0 217 }
549e55cd 218 spin_unlock_irqrestore(&phba->hbalock, flags);
92d7f7b0
JS		 219 return 1;
220}
221
90160e01 222/**
3621a710 223 * lpfc_discovery_wait - Wait for driver discovery to quiesce
90160e01
JS		 224 * @vport: The virtual port for which this call is being executed.
225 *
226 * This driver calls this routine specifically from lpfc_vport_delete
227 * to enforce a synchronous execution of vport
228 * delete relative to discovery activities. The
229 * lpfc_vport_delete routine should not return until it
230 * can reasonably guarantee that discovery has quiesced.
231 * Post FDISC LOGO, the driver must wait until its SAN teardown is
232 * complete and all resources recovered before allowing
233 * cleanup.
234 *
235 * This routine does not require any locks held.
236 **/
237static void lpfc_discovery_wait(struct lpfc_vport *vport)
238{
239 struct lpfc_hba *phba = vport->phba;
240 uint32_t wait_flags = 0;
241 unsigned long wait_time_max;
242 unsigned long start_time;
243
244 wait_flags = FC_RSCN_MODE | FC_RSCN_DISCOVERY | FC_NLP_MORE |
245 FC_RSCN_DEFERRED | FC_NDISC_ACTIVE | FC_DISC_TMO;
246
247 /*
248 * The time constraint on this loop is a balance between the
249 * fabric RA_TOV value and dev_loss tmo. The driver's
250 * devloss_tmo is 10 giving this loop a 3x multiplier minimally.
251 */
252 wait_time_max = msecs_to_jiffies(((phba->fc_ratov * 3) + 3) * 1000);
253 wait_time_max += jiffies;
254 start_time = jiffies;
255 while (time_before(jiffies, wait_time_max)) {
256 if ((vport->num_disc_nodes > 0) ||
257 (vport->fc_flag & wait_flags) ||
258 ((vport->port_state > LPFC_VPORT_FAILED) &&
259 (vport->port_state < LPFC_VPORT_READY))) {
21e9a0a5 260 lpfc_printf_vlog(vport, KERN_INFO, LOG_VPORT,
90160e01 261 "1833 Vport discovery quiesce Wait:"
21e9a0a5 262 " state x%x fc_flags x%x"
90160e01
JS		 263 " num_nodes x%x, waiting 1000 msecs"
264 " total wait msecs x%x\n",
21e9a0a5
JS		 265 vport->port_state, vport->fc_flag,
266 vport->num_disc_nodes,
90160e01
JS		 267 jiffies_to_msecs(jiffies - start_time));
268 msleep(1000);
269 } else {
270 /* Base case. Wait variants satisfied. Break out */
21e9a0a5 271 lpfc_printf_vlog(vport, KERN_INFO, LOG_VPORT,
90160e01 272 "1834 Vport discovery quiesced:"
21e9a0a5 273 " state x%x fc_flags x%x"
90160e01 274 " wait msecs x%x\n",
21e9a0a5 275 vport->port_state, vport->fc_flag,
90160e01
JS		 276 jiffies_to_msecs(jiffies
277 - start_time));
278 break;
279 }
280 }
281
282 if (time_after(jiffies, wait_time_max))
21e9a0a5 283 lpfc_printf_vlog(vport, KERN_ERR, LOG_VPORT,
90160e01 284 "1835 Vport discovery quiesce failed:"
21e9a0a5
JS		 285 " state x%x fc_flags x%x wait msecs x%x\n",
286 vport->port_state, vport->fc_flag,
90160e01
JS		 287 jiffies_to_msecs(jiffies - start_time));
288}
289
92d7f7b0
JS		 290int
291lpfc_vport_create(struct fc_vport *fc_vport, bool disable)
292{
293 struct lpfc_nodelist *ndlp;
3de2a653
JS		 294 struct Scsi_Host *shost = fc_vport->shost;
295 struct lpfc_vport *pport = (struct lpfc_vport *) shost->hostdata;
92d7f7b0
JS		 296 struct lpfc_hba *phba = pport->phba;
297 struct lpfc_vport *vport = NULL;
298 int instance;
299 int vpi;
300 int rc = VPORT_ERROR;
98c9ea5c 301 int status;
92d7f7b0 302
eada272d 303 if ((phba->sli_rev < 3) || !(phba->cfg_enable_npiv)) {
92d7f7b0 304 lpfc_printf_log(phba, KERN_ERR, LOG_VPORT,
e8b62011 305 "1808 Create VPORT failed: "
92d7f7b0 306 "NPIV is not enabled: SLImode:%d\n",
e8b62011 307 phba->sli_rev);
92d7f7b0
JS		 308 rc = VPORT_INVAL;
309 goto error_out;
310 }
311
312 vpi = lpfc_alloc_vpi(phba);
313 if (vpi == 0) {
314 lpfc_printf_log(phba, KERN_ERR, LOG_VPORT,
e8b62011 315 "1809 Create VPORT failed: "
92d7f7b0 316 "Max VPORTs (%d) exceeded\n",
e8b62011 317 phba->max_vpi);
92d7f7b0
JS		 318 rc = VPORT_NORESOURCES;
319 goto error_out;
320 }
321
92d7f7b0
JS		 322 /* Assign an unused board number */
323 if ((instance = lpfc_get_instance()) < 0) {
324 lpfc_printf_log(phba, KERN_ERR, LOG_VPORT,
e8b62011
JS		 325 "1810 Create VPORT failed: Cannot get "
326 "instance number\n");
92d7f7b0
JS		 327 lpfc_free_vpi(phba, vpi);
328 rc = VPORT_NORESOURCES;
329 goto error_out;
330 }
331
3de2a653 332 vport = lpfc_create_port(phba, instance, &fc_vport->dev);
92d7f7b0
JS		 333 if (!vport) {
334 lpfc_printf_log(phba, KERN_ERR, LOG_VPORT,
e8b62011 335 "1811 Create VPORT failed: vpi x%x\n", vpi);
92d7f7b0
JS		 336 lpfc_free_vpi(phba, vpi);
337 rc = VPORT_NORESOURCES;
338 goto error_out;
339 }
340
341 vport->vpi = vpi;
858c9f6c
JS		 342 lpfc_debugfs_initialize(vport);
343
98c9ea5c
JS		 344 if ((status = lpfc_vport_sparm(phba, vport))) {
345 if (status == -EINTR) {
346 lpfc_printf_vlog(vport, KERN_ERR, LOG_VPORT,
347 "1831 Create VPORT Interrupted.\n");
348 rc = VPORT_ERROR;
349 } else {
350 lpfc_printf_vlog(vport, KERN_ERR, LOG_VPORT,
351 "1813 Create VPORT failed. "
352 "Cannot get sparam\n");
353 rc = VPORT_NORESOURCES;
354 }
92d7f7b0
JS		 355 lpfc_free_vpi(phba, vpi);
356 destroy_port(vport);
92d7f7b0
JS		 357 goto error_out;
358 }
359
1c6834a7
JS		 360 u64_to_wwn(fc_vport->node_name, vport->fc_nodename.u.wwn);
361 u64_to_wwn(fc_vport->port_name, vport->fc_portname.u.wwn);
92d7f7b0
JS		 362
363 memcpy(&vport->fc_sparam.portName, vport->fc_portname.u.wwn, 8);
364 memcpy(&vport->fc_sparam.nodeName, vport->fc_nodename.u.wwn, 8);
365
366 if (!lpfc_valid_wwn_format(phba, &vport->fc_sparam.nodeName, "WWNN") ||
367 !lpfc_valid_wwn_format(phba, &vport->fc_sparam.portName, "WWPN")) {
e8b62011
JS		 368 lpfc_printf_vlog(vport, KERN_ERR, LOG_VPORT,
369 "1821 Create VPORT failed. "
370 "Invalid WWN format\n");
92d7f7b0
JS		 371 lpfc_free_vpi(phba, vpi);
372 destroy_port(vport);
373 rc = VPORT_INVAL;
374 goto error_out;
375 }
376
377 if (!lpfc_unique_wwpn(phba, vport)) {
e8b62011
JS		 378 lpfc_printf_vlog(vport, KERN_ERR, LOG_VPORT,
379 "1823 Create VPORT failed. "
380 "Duplicate WWN on HBA\n");
92d7f7b0
JS		 381 lpfc_free_vpi(phba, vpi);
382 destroy_port(vport);
383 rc = VPORT_INVAL;
384 goto error_out;
385 }
386
eada272d
JS		 387 /* Create binary sysfs attribute for vport */
388 lpfc_alloc_sysfs_attr(vport);
389
572709e2
JS		 390 /* Set the DFT_LUN_Q_DEPTH accordingly */
391 vport->cfg_lun_queue_depth = phba->pport->cfg_lun_queue_depth;
392
92d7f7b0
JS		 393 *(struct lpfc_vport **)fc_vport->dd_data = vport;
394 vport->fc_vport = fc_vport;
395
1c6834a7
JS		 396 /*
397 * In SLI4, the vpi must be activated before it can be used
398 * by the port.
399 */
400 if ((phba->sli_rev == LPFC_SLI_REV4) &&
76a95d75
JS		 401 (pport->fc_flag & FC_VFI_REGISTERED)) {
402 rc = lpfc_sli4_init_vpi(vport);
1c6834a7
JS		 403 if (rc) {
404 lpfc_printf_log(phba, KERN_ERR, LOG_VPORT,
405 "1838 Failed to INIT_VPI on vpi %d "
406 "status %d\n", vpi, rc);
407 rc = VPORT_NORESOURCES;
408 lpfc_free_vpi(phba, vpi);
409 goto error_out;
410 }
411 } else if (phba->sli_rev == LPFC_SLI_REV4) {
412 /*
413 * Driver cannot INIT_VPI now. Set the flags to
414 * init_vpi when reg_vfi complete.
415 */
416 vport->fc_flag |= FC_VPORT_NEEDS_INIT_VPI;
417 lpfc_vport_set_state(vport, FC_VPORT_LINKDOWN);
418 rc = VPORT_OK;
419 goto out;
420 }
421
92d7f7b0 422 if ((phba->link_state < LPFC_LINK_UP) ||
1c6834a7 423 (pport->port_state < LPFC_FABRIC_CFG_LINK) ||
76a95d75 424 (phba->fc_topology == LPFC_TOPOLOGY_LOOP)) {
92d7f7b0
JS		 425 lpfc_vport_set_state(vport, FC_VPORT_LINKDOWN);
426 rc = VPORT_OK;
427 goto out;
428 }
429
430 if (disable) {
eada272d 431 lpfc_vport_set_state(vport, FC_VPORT_DISABLED);
92d7f7b0
JS		 432 rc = VPORT_OK;
433 goto out;
434 }
435
436 /* Use the Physical nodes Fabric NDLP to determine if the link is
437 * up and ready to FDISC.
438 */
439 ndlp = lpfc_findnode_did(phba->pport, Fabric_DID);
e47c9093
JS		 440 if (ndlp && NLP_CHK_NODE_ACT(ndlp) &&
441 ndlp->nlp_state == NLP_STE_UNMAPPED_NODE) {
858c9f6c
JS		 442 if (phba->link_flag & LS_NPIV_FAB_SUPPORTED) {
443 lpfc_set_disctmo(vport);
444 lpfc_initial_fdisc(vport);
445 } else {
446 lpfc_vport_set_state(vport, FC_VPORT_NO_FABRIC_SUPP);
e8b62011
JS		 447 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
448 "0262 No NPIV Fabric support\n");
858c9f6c 449 }
92d7f7b0
JS		 450 } else {
451 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
452 }
453 rc = VPORT_OK;
454
455out:
a58cbd52
JS		 456 lpfc_printf_vlog(vport, KERN_ERR, LOG_VPORT,
457 "1825 Vport Created.\n");
92d7f7b0
JS		 458 lpfc_host_attrib_init(lpfc_shost_from_vport(vport));
459error_out:
460 return rc;
461}
462
311464ec 463static int
92d7f7b0
JS		 464disable_vport(struct fc_vport *fc_vport)
465{
466 struct lpfc_vport *vport = *(struct lpfc_vport **)fc_vport->dd_data;
467 struct lpfc_hba *phba = vport->phba;
468 struct lpfc_nodelist *ndlp = NULL, *next_ndlp = NULL;
469 long timeout;
fedd3b7b 470 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
92d7f7b0
JS		 471
472 ndlp = lpfc_findnode_did(vport, Fabric_DID);
e47c9093
JS		 473 if (ndlp && NLP_CHK_NODE_ACT(ndlp)
474 && phba->link_state >= LPFC_LINK_UP) {
92d7f7b0
JS		 475 vport->unreg_vpi_cmpl = VPORT_INVAL;
476 timeout = msecs_to_jiffies(phba->fc_ratov * 2000);
477 if (!lpfc_issue_els_npiv_logo(vport, ndlp))
478 while (vport->unreg_vpi_cmpl == VPORT_INVAL && timeout)
479 timeout = schedule_timeout(timeout);
480 }
481
482 lpfc_sli_host_down(vport);
483
484 /* Mark all nodes for discovery so we can remove them by
485 * calling lpfc_cleanup_rpis(vport, 1)
486 */
487 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) {
e47c9093
JS		 488 if (!NLP_CHK_NODE_ACT(ndlp))
489 continue;
92d7f7b0
JS		 490 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
491 continue;
492 lpfc_disc_state_machine(vport, ndlp, NULL,
493 NLP_EVT_DEVICE_RECOVERY);
494 }
495 lpfc_cleanup_rpis(vport, 1);
496
497 lpfc_stop_vport_timers(vport);
498 lpfc_unreg_all_rpis(vport);
499 lpfc_unreg_default_rpis(vport);
500 /*
501 * Completion of unreg_vpi (lpfc_mbx_cmpl_unreg_vpi) does the
502 * scsi_host_put() to release the vport.
503 */
504 lpfc_mbx_unreg_vpi(vport);
fedd3b7b
JS		 505 spin_lock_irq(shost->host_lock);
506 vport->fc_flag |= FC_VPORT_NEEDS_INIT_VPI;
507 spin_unlock_irq(shost->host_lock);
92d7f7b0
JS		 508
509 lpfc_vport_set_state(vport, FC_VPORT_DISABLED);
a58cbd52
JS		 510 lpfc_printf_vlog(vport, KERN_ERR, LOG_VPORT,
511 "1826 Vport Disabled.\n");
92d7f7b0
JS		 512 return VPORT_OK;
513}
514
311464ec 515static int
92d7f7b0
JS		 516enable_vport(struct fc_vport *fc_vport)
517{
518 struct lpfc_vport *vport = *(struct lpfc_vport **)fc_vport->dd_data;
519 struct lpfc_hba *phba = vport->phba;
520 struct lpfc_nodelist *ndlp = NULL;
72100cc4 521 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
92d7f7b0
JS		 522
523 if ((phba->link_state < LPFC_LINK_UP) ||
76a95d75 524 (phba->fc_topology == LPFC_TOPOLOGY_LOOP)) {
92d7f7b0
JS		 525 lpfc_vport_set_state(vport, FC_VPORT_LINKDOWN);
526 return VPORT_OK;
527 }
528
72100cc4 529 spin_lock_irq(shost->host_lock);
92d7f7b0
JS		 530 vport->load_flag |= FC_LOADING;
531 vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
72100cc4 532 spin_unlock_irq(shost->host_lock);
92d7f7b0
JS		 533
534 /* Use the Physical nodes Fabric NDLP to determine if the link is
535 * up and ready to FDISC.
536 */
537 ndlp = lpfc_findnode_did(phba->pport, Fabric_DID);
e47c9093
JS		 538 if (ndlp && NLP_CHK_NODE_ACT(ndlp)
539 && ndlp->nlp_state == NLP_STE_UNMAPPED_NODE) {
858c9f6c
JS		 540 if (phba->link_flag & LS_NPIV_FAB_SUPPORTED) {
541 lpfc_set_disctmo(vport);
542 lpfc_initial_fdisc(vport);
543 } else {
544 lpfc_vport_set_state(vport, FC_VPORT_NO_FABRIC_SUPP);
e8b62011
JS		 545 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
546 "0264 No NPIV Fabric support\n");
858c9f6c 547 }
92d7f7b0
JS		 548 } else {
549 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
550 }
a58cbd52
JS		 551 lpfc_printf_vlog(vport, KERN_ERR, LOG_VPORT,
552 "1827 Vport Enabled.\n");
92d7f7b0
JS		 553 return VPORT_OK;
554}
555
556int
557lpfc_vport_disable(struct fc_vport *fc_vport, bool disable)
558{
559 if (disable)
560 return disable_vport(fc_vport);
561 else
562 return enable_vport(fc_vport);
563}
564
565
566int
567lpfc_vport_delete(struct fc_vport *fc_vport)
568{
569 struct lpfc_nodelist *ndlp = NULL;
92d7f7b0
JS		 570 struct Scsi_Host *shost = (struct Scsi_Host *) fc_vport->shost;
571 struct lpfc_vport *vport = *(struct lpfc_vport **)fc_vport->dd_data;
572 struct lpfc_hba *phba = vport->phba;
573 long timeout;
16a3a208 574 bool ns_ndlp_referenced = false;
92d7f7b0 575
51ef4c26
JS		 576 if (vport->port_type == LPFC_PHYSICAL_PORT) {
577 lpfc_printf_vlog(vport, KERN_ERR, LOG_VPORT,
578 "1812 vport_delete failed: Cannot delete "
579 "physical host\n");
580 return VPORT_ERROR;
581 }
21e9a0a5
JS		 582
583 /* If the vport is a static vport fail the deletion. */
584 if ((vport->vport_flag & STATIC_VPORT) &&
585 !(phba->pport->load_flag & FC_UNLOADING)) {
586 lpfc_printf_vlog(vport, KERN_ERR, LOG_VPORT,
587 "1837 vport_delete failed: Cannot delete "
588 "static vport.\n");
589 return VPORT_ERROR;
590 }
d439d286
JS		 591 spin_lock_irq(&phba->hbalock);
592 vport->load_flag |= FC_UNLOADING;
593 spin_unlock_irq(&phba->hbalock);
51ef4c26
JS		 594 /*
595 * If we are not unloading the driver then prevent the vport_delete
596 * from happening until after this vport's discovery is finished.
597 */
598 if (!(phba->pport->load_flag & FC_UNLOADING)) {
599 int check_count = 0;
600 while (check_count < ((phba->fc_ratov * 3) + 3) &&
601 vport->port_state > LPFC_VPORT_FAILED &&
602 vport->port_state < LPFC_VPORT_READY) {
603 check_count++;
604 msleep(1000);
605 }
606 if (vport->port_state > LPFC_VPORT_FAILED &&
607 vport->port_state < LPFC_VPORT_READY)
608 return -EAGAIN;
609 }
92d7f7b0
JS		 610 /*
611 * This is a bit of a mess. We want to ensure the shost doesn't get
612 * torn down until we're done with the embedded lpfc_vport structure.
613 *
614 * Beyond holding a reference for this function, we also need a
615 * reference for outstanding I/O requests we schedule during delete
616 * processing. But once we scsi_remove_host() we can no longer obtain
617 * a reference through scsi_host_get().
618 *
619 * So we take two references here. We release one reference at the
620 * bottom of the function -- after delinking the vport. And we
621 * release the other at the completion of the unreg_vpi that get's
622 * initiated after we've disposed of all other resources associated
623 * with the port.
624 */
d7c255b2 625 if (!scsi_host_get(shost))
92d7f7b0 626 return VPORT_INVAL;
d7c255b2
JS		 627 if (!scsi_host_get(shost)) {
628 scsi_host_put(shost);
629 return VPORT_INVAL;
630 }
eada272d
JS		 631 lpfc_free_sysfs_attr(vport);
632
858c9f6c 633 lpfc_debugfs_terminate(vport);
eada272d 634
16a3a208
JS		 635 /*
636 * The call to fc_remove_host might release the NameServer ndlp. Since
637 * we might need to use the ndlp to send the DA_ID CT command,
638 * increment the reference for the NameServer ndlp to prevent it from
639 * being released.
640 */
641 ndlp = lpfc_findnode_did(vport, NameServer_DID);
642 if (ndlp && NLP_CHK_NODE_ACT(ndlp)) {
643 lpfc_nlp_get(ndlp);
644 ns_ndlp_referenced = true;
645 }
646
eada272d 647 /* Remove FC host and then SCSI host with the vport */
92d7f7b0
JS		 648 fc_remove_host(lpfc_shost_from_vport(vport));
649 scsi_remove_host(lpfc_shost_from_vport(vport));
650
651 ndlp = lpfc_findnode_did(phba->pport, Fabric_DID);
e47c9093
JS		 652
653 /* In case of driver unload, we shall not perform fabric logo as the
654 * worker thread already stopped at this stage and, in this case, we
655 * can safely skip the fabric logo.
656 */
657 if (phba->pport->load_flag & FC_UNLOADING) {
658 if (ndlp && NLP_CHK_NODE_ACT(ndlp) &&
659 ndlp->nlp_state == NLP_STE_UNMAPPED_NODE &&
660 phba->link_state >= LPFC_LINK_UP) {
661 /* First look for the Fabric ndlp */
662 ndlp = lpfc_findnode_did(vport, Fabric_DID);
663 if (!ndlp)
664 goto skip_logo;
665 else if (!NLP_CHK_NODE_ACT(ndlp)) {
666 ndlp = lpfc_enable_node(vport, ndlp,
667 NLP_STE_UNUSED_NODE);
668 if (!ndlp)
669 goto skip_logo;
670 }
671 /* Remove ndlp from vport npld list */
672 lpfc_dequeue_node(vport, ndlp);
673
674 /* Indicate free memory when release */
675 spin_lock_irq(&phba->ndlp_lock);
676 NLP_SET_FREE_REQ(ndlp);
677 spin_unlock_irq(&phba->ndlp_lock);
678 /* Kick off release ndlp when it can be safely done */
679 lpfc_nlp_put(ndlp);
680 }
681 goto skip_logo;
682 }
683
684 /* Otherwise, we will perform fabric logo as needed */
685 if (ndlp && NLP_CHK_NODE_ACT(ndlp) &&
686 ndlp->nlp_state == NLP_STE_UNMAPPED_NODE &&
58da1ffb 687 phba->link_state >= LPFC_LINK_UP &&
76a95d75 688 phba->fc_topology != LPFC_TOPOLOGY_LOOP) {
7ee5d43e
JS		 689 if (vport->cfg_enable_da_id) {
690 timeout = msecs_to_jiffies(phba->fc_ratov * 2000);
691 if (!lpfc_ns_cmd(vport, SLI_CTNS_DA_ID, 0, 0))
692 while (vport->ct_flags && timeout)
693 timeout = schedule_timeout(timeout);
694 else
695 lpfc_printf_log(vport->phba, KERN_WARNING,
696 LOG_VPORT,
697 "1829 CT command failed to "
e4e74273 698 "delete objects on fabric\n");
7ee5d43e 699 }
92d7f7b0
JS		 700 /* First look for the Fabric ndlp */
701 ndlp = lpfc_findnode_did(vport, Fabric_DID);
702 if (!ndlp) {
703 /* Cannot find existing Fabric ndlp, allocate one */
704 ndlp = mempool_alloc(phba->nlp_mem_pool, GFP_KERNEL);
705 if (!ndlp)
706 goto skip_logo;
707 lpfc_nlp_init(vport, ndlp, Fabric_DID);
e47c9093
JS		 708 /* Indicate free memory when release */
709 NLP_SET_FREE_REQ(ndlp);
92d7f7b0 710 } else {
73d91e50 711 if (!NLP_CHK_NODE_ACT(ndlp)) {
e47c9093
JS		 712 ndlp = lpfc_enable_node(vport, ndlp,
713 NLP_STE_UNUSED_NODE);
714 if (!ndlp)
715 goto skip_logo;
73d91e50 716 }
e47c9093 717
73d91e50 718 /* Remove ndlp from vport list */
92d7f7b0 719 lpfc_dequeue_node(vport, ndlp);
e47c9093
JS		 720 spin_lock_irq(&phba->ndlp_lock);
721 if (!NLP_CHK_FREE_REQ(ndlp))
722 /* Indicate free memory when release */
723 NLP_SET_FREE_REQ(ndlp);
724 else {
725 /* Skip this if ndlp is already in free mode */
726 spin_unlock_irq(&phba->ndlp_lock);
727 goto skip_logo;
728 }
729 spin_unlock_irq(&phba->ndlp_lock);
92d7f7b0 730 }
73d91e50
JS		 731
732 /*
733 * If the vpi is not registered, then a valid FDISC doesn't
734 * exist and there is no need for a ELS LOGO. Just cleanup
735 * the ndlp.
736 */
737 if (!(vport->vpi_state & LPFC_VPI_REGISTERED)) {
738 lpfc_nlp_put(ndlp);
5ffc266e 739 goto skip_logo;
73d91e50
JS		 740 }
741
92d7f7b0
JS		 742 vport->unreg_vpi_cmpl = VPORT_INVAL;
743 timeout = msecs_to_jiffies(phba->fc_ratov * 2000);
744 if (!lpfc_issue_els_npiv_logo(vport, ndlp))
745 while (vport->unreg_vpi_cmpl == VPORT_INVAL && timeout)
746 timeout = schedule_timeout(timeout);
747 }
748
90160e01
JS		 749 if (!(phba->pport->load_flag & FC_UNLOADING))
750 lpfc_discovery_wait(vport);
751
92d7f7b0 752skip_logo:
16a3a208
JS		 753
754 /*
755 * If the NameServer ndlp has been incremented to allow the DA_ID CT
756 * command to be sent, decrement the ndlp now.
757 */
758 if (ns_ndlp_referenced) {
759 ndlp = lpfc_findnode_did(vport, NameServer_DID);
760 lpfc_nlp_put(ndlp);
761 }
762
87af33fe 763 lpfc_cleanup(vport);
92d7f7b0
JS		 764 lpfc_sli_host_down(vport);
765
92d7f7b0 766 lpfc_stop_vport_timers(vport);
87af33fe
JS		 767
768 if (!(phba->pport->load_flag & FC_UNLOADING)) {
e47c9093 769 lpfc_unreg_all_rpis(vport);
87af33fe
JS		 770 lpfc_unreg_default_rpis(vport);
771 /*
772 * Completion of unreg_vpi (lpfc_mbx_cmpl_unreg_vpi)
773 * does the scsi_host_put() to release the vport.
774 */
d7c255b2
JS		 775 if (lpfc_mbx_unreg_vpi(vport))
776 scsi_host_put(shost);
777 } else
778 scsi_host_put(shost);
92d7f7b0
JS		 779
780 lpfc_free_vpi(phba, vport->vpi);
781 vport->work_port_events = 0;
782 spin_lock_irq(&phba->hbalock);
783 list_del_init(&vport->listentry);
784 spin_unlock_irq(&phba->hbalock);
a58cbd52
JS		 785 lpfc_printf_vlog(vport, KERN_ERR, LOG_VPORT,
786 "1828 Vport Deleted.\n");
92d7f7b0 787 scsi_host_put(shost);
51ef4c26 788 return VPORT_OK;
92d7f7b0
JS		 789}
790
549e55cd
JS		 791struct lpfc_vport **
792lpfc_create_vport_work_array(struct lpfc_hba *phba)
793{
794 struct lpfc_vport *port_iterator;
795 struct lpfc_vport **vports;
796 int index = 0;
21e9a0a5 797 vports = kzalloc((phba->max_vports + 1) * sizeof(struct lpfc_vport *),
549e55cd
JS		 798 GFP_KERNEL);
799 if (vports == NULL)
800 return NULL;
801 spin_lock_irq(&phba->hbalock);
802 list_for_each_entry(port_iterator, &phba->port_list, listentry) {
df9e1b59
JS		 803 if (port_iterator->load_flag & FC_UNLOADING)
804 continue;
e8b62011 805 if (!scsi_host_get(lpfc_shost_from_vport(port_iterator))) {
df9e1b59 806 lpfc_printf_vlog(port_iterator, KERN_ERR, LOG_VPORT,
e8b62011
JS		 807 "1801 Create vport work array FAILED: "
808 "cannot do scsi_host_get\n");
549e55cd 809 continue;
e8b62011 810 }
549e55cd
JS		 811 vports[index++] = port_iterator;
812 }
813 spin_unlock_irq(&phba->hbalock);
814 return vports;
815}
816
817void
09372820 818lpfc_destroy_vport_work_array(struct lpfc_hba *phba, struct lpfc_vport **vports)
549e55cd
JS		 819{
820 int i;
821 if (vports == NULL)
822 return;
98fc5dd9 823 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++)
549e55cd
JS		 824 scsi_host_put(lpfc_shost_from_vport(vports[i]));
825 kfree(vports);
826}
ea2151b4
JS		 827
828
829/**
3621a710 830 * lpfc_vport_reset_stat_data - Reset the statistical data for the vport
ea2151b4
JS		 831 * @vport: Pointer to vport object.
832 *
833 * This function resets the statistical data for the vport. This function
834 * is called with the host_lock held
835 **/
836void
837lpfc_vport_reset_stat_data(struct lpfc_vport *vport)
838{
839 struct lpfc_nodelist *ndlp = NULL, *next_ndlp = NULL;
840
841 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) {
842 if (!NLP_CHK_NODE_ACT(ndlp))
843 continue;
844 if (ndlp->lat_data)
845 memset(ndlp->lat_data, 0, LPFC_MAX_BUCKET_COUNT *
846 sizeof(struct lpfc_scsicmd_bkt));
847 }
848}
849
850
851/**
3621a710 852 * lpfc_alloc_bucket - Allocate data buffer required for statistical data
ea2151b4
JS		 853 * @vport: Pointer to vport object.
854 *
855 * This function allocates data buffer required for all the FC
856 * nodes of the vport to collect statistical data.
857 **/
858void
859lpfc_alloc_bucket(struct lpfc_vport *vport)
860{
861 struct lpfc_nodelist *ndlp = NULL, *next_ndlp = NULL;
862
863 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) {
864 if (!NLP_CHK_NODE_ACT(ndlp))
865 continue;
866
867 kfree(ndlp->lat_data);
868 ndlp->lat_data = NULL;
869
870 if (ndlp->nlp_state == NLP_STE_MAPPED_NODE) {
871 ndlp->lat_data = kcalloc(LPFC_MAX_BUCKET_COUNT,
872 sizeof(struct lpfc_scsicmd_bkt),
873 GFP_ATOMIC);
874
875 if (!ndlp->lat_data)
876 lpfc_printf_vlog(vport, KERN_ERR, LOG_NODE,
877 "0287 lpfc_alloc_bucket failed to "
878 "allocate statistical data buffer DID "
879 "0x%x\n", ndlp->nlp_DID);
880 }
881 }
882}
883
884/**
3621a710 885 * lpfc_free_bucket - Free data buffer required for statistical data
ea2151b4
JS		 886 * @vport: Pointer to vport object.
887 *
888 * Th function frees statistical data buffer of all the FC
889 * nodes of the vport.
890 **/
891void
892lpfc_free_bucket(struct lpfc_vport *vport)
893{
894 struct lpfc_nodelist *ndlp = NULL, *next_ndlp = NULL;
895
896 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) {
897 if (!NLP_CHK_NODE_ACT(ndlp))
898 continue;
899
900 kfree(ndlp->lat_data);
901 ndlp->lat_data = NULL;
902 }
903}
Linux kernel - Deliverables
This page took 0.653422 seconds and 5 git commands to generate.