Merge branch 'slab/next' of git://git.kernel.org/pub/scm/linux/kernel/git/penberg...
[deliverable/linux.git] / drivers / scsi / lpfc / lpfc_els.c
1 /*******************************************************************
2 * This file is part of the Emulex Linux Device Driver for *
3 * Fibre Channel Host Bus Adapters. *
4 * Copyright (C) 2004-2012 Emulex. All rights reserved. *
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 /* See Fibre Channel protocol T11 FC-LS for details */
22 #include <linux/blkdev.h>
23 #include <linux/pci.h>
24 #include <linux/slab.h>
25 #include <linux/interrupt.h>
26
27 #include <scsi/scsi.h>
28 #include <scsi/scsi_device.h>
29 #include <scsi/scsi_host.h>
30 #include <scsi/scsi_transport_fc.h>
31
32 #include "lpfc_hw4.h"
33 #include "lpfc_hw.h"
34 #include "lpfc_sli.h"
35 #include "lpfc_sli4.h"
36 #include "lpfc_nl.h"
37 #include "lpfc_disc.h"
38 #include "lpfc_scsi.h"
39 #include "lpfc.h"
40 #include "lpfc_logmsg.h"
41 #include "lpfc_crtn.h"
42 #include "lpfc_vport.h"
43 #include "lpfc_debugfs.h"
44
45 static int lpfc_els_retry(struct lpfc_hba *, struct lpfc_iocbq *,
46 struct lpfc_iocbq *);
47 static void lpfc_cmpl_fabric_iocb(struct lpfc_hba *, struct lpfc_iocbq *,
48 struct lpfc_iocbq *);
49 static void lpfc_fabric_abort_vport(struct lpfc_vport *vport);
50 static int lpfc_issue_els_fdisc(struct lpfc_vport *vport,
51 struct lpfc_nodelist *ndlp, uint8_t retry);
52 static int lpfc_issue_fabric_iocb(struct lpfc_hba *phba,
53 struct lpfc_iocbq *iocb);
54
55 static int lpfc_max_els_tries = 3;
56
57 /**
58 * lpfc_els_chk_latt - Check host link attention event for a vport
59 * @vport: pointer to a host virtual N_Port data structure.
60 *
61 * This routine checks whether there is an outstanding host link
62 * attention event during the discovery process with the @vport. It is done
63 * by reading the HBA's Host Attention (HA) register. If there is any host
64 * link attention events during this @vport's discovery process, the @vport
65 * shall be marked as FC_ABORT_DISCOVERY, a host link attention clear shall
66 * be issued if the link state is not already in host link cleared state,
67 * and a return code shall indicate whether the host link attention event
68 * had happened.
69 *
70 * Note that, if either the host link is in state LPFC_LINK_DOWN or @vport
71 * state in LPFC_VPORT_READY, the request for checking host link attention
72 * event will be ignored and a return code shall indicate no host link
73 * attention event had happened.
74 *
75 * Return codes
76 * 0 - no host link attention event happened
77 * 1 - host link attention event happened
78 **/
79 int
80 lpfc_els_chk_latt(struct lpfc_vport *vport)
81 {
82 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
83 struct lpfc_hba *phba = vport->phba;
84 uint32_t ha_copy;
85
86 if (vport->port_state >= LPFC_VPORT_READY ||
87 phba->link_state == LPFC_LINK_DOWN ||
88 phba->sli_rev > LPFC_SLI_REV3)
89 return 0;
90
91 /* Read the HBA Host Attention Register */
92 if (lpfc_readl(phba->HAregaddr, &ha_copy))
93 return 1;
94
95 if (!(ha_copy & HA_LATT))
96 return 0;
97
98 /* Pending Link Event during Discovery */
99 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
100 "0237 Pending Link Event during "
101 "Discovery: State x%x\n",
102 phba->pport->port_state);
103
104 /* CLEAR_LA should re-enable link attention events and
105 * we should then immediately take a LATT event. The
106 * LATT processing should call lpfc_linkdown() which
107 * will cleanup any left over in-progress discovery
108 * events.
109 */
110 spin_lock_irq(shost->host_lock);
111 vport->fc_flag |= FC_ABORT_DISCOVERY;
112 spin_unlock_irq(shost->host_lock);
113
114 if (phba->link_state != LPFC_CLEAR_LA)
115 lpfc_issue_clear_la(phba, vport);
116
117 return 1;
118 }
119
120 /**
121 * lpfc_prep_els_iocb - Allocate and prepare a lpfc iocb data structure
122 * @vport: pointer to a host virtual N_Port data structure.
123 * @expectRsp: flag indicating whether response is expected.
124 * @cmdSize: size of the ELS command.
125 * @retry: number of retries to the command IOCB when it fails.
126 * @ndlp: pointer to a node-list data structure.
127 * @did: destination identifier.
128 * @elscmd: the ELS command code.
129 *
130 * This routine is used for allocating a lpfc-IOCB data structure from
131 * the driver lpfc-IOCB free-list and prepare the IOCB with the parameters
132 * passed into the routine for discovery state machine to issue an Extended
133 * Link Service (ELS) commands. It is a generic lpfc-IOCB allocation
134 * and preparation routine that is used by all the discovery state machine
135 * routines and the ELS command-specific fields will be later set up by
136 * the individual discovery machine routines after calling this routine
137 * allocating and preparing a generic IOCB data structure. It fills in the
138 * Buffer Descriptor Entries (BDEs), allocates buffers for both command
139 * payload and response payload (if expected). The reference count on the
140 * ndlp is incremented by 1 and the reference to the ndlp is put into
141 * context1 of the IOCB data structure for this IOCB to hold the ndlp
142 * reference for the command's callback function to access later.
143 *
144 * Return code
145 * Pointer to the newly allocated/prepared els iocb data structure
146 * NULL - when els iocb data structure allocation/preparation failed
147 **/
148 struct lpfc_iocbq *
149 lpfc_prep_els_iocb(struct lpfc_vport *vport, uint8_t expectRsp,
150 uint16_t cmdSize, uint8_t retry,
151 struct lpfc_nodelist *ndlp, uint32_t did,
152 uint32_t elscmd)
153 {
154 struct lpfc_hba *phba = vport->phba;
155 struct lpfc_iocbq *elsiocb;
156 struct lpfc_dmabuf *pcmd, *prsp, *pbuflist;
157 struct ulp_bde64 *bpl;
158 IOCB_t *icmd;
159
160
161 if (!lpfc_is_link_up(phba))
162 return NULL;
163
164 /* Allocate buffer for command iocb */
165 elsiocb = lpfc_sli_get_iocbq(phba);
166
167 if (elsiocb == NULL)
168 return NULL;
169
170 /*
171 * If this command is for fabric controller and HBA running
172 * in FIP mode send FLOGI, FDISC and LOGO as FIP frames.
173 */
174 if ((did == Fabric_DID) &&
175 (phba->hba_flag & HBA_FIP_SUPPORT) &&
176 ((elscmd == ELS_CMD_FLOGI) ||
177 (elscmd == ELS_CMD_FDISC) ||
178 (elscmd == ELS_CMD_LOGO)))
179 switch (elscmd) {
180 case ELS_CMD_FLOGI:
181 elsiocb->iocb_flag |=
182 ((LPFC_ELS_ID_FLOGI << LPFC_FIP_ELS_ID_SHIFT)
183 & LPFC_FIP_ELS_ID_MASK);
184 break;
185 case ELS_CMD_FDISC:
186 elsiocb->iocb_flag |=
187 ((LPFC_ELS_ID_FDISC << LPFC_FIP_ELS_ID_SHIFT)
188 & LPFC_FIP_ELS_ID_MASK);
189 break;
190 case ELS_CMD_LOGO:
191 elsiocb->iocb_flag |=
192 ((LPFC_ELS_ID_LOGO << LPFC_FIP_ELS_ID_SHIFT)
193 & LPFC_FIP_ELS_ID_MASK);
194 break;
195 }
196 else
197 elsiocb->iocb_flag &= ~LPFC_FIP_ELS_ID_MASK;
198
199 icmd = &elsiocb->iocb;
200
201 /* fill in BDEs for command */
202 /* Allocate buffer for command payload */
203 pcmd = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
204 if (pcmd)
205 pcmd->virt = lpfc_mbuf_alloc(phba, MEM_PRI, &pcmd->phys);
206 if (!pcmd || !pcmd->virt)
207 goto els_iocb_free_pcmb_exit;
208
209 INIT_LIST_HEAD(&pcmd->list);
210
211 /* Allocate buffer for response payload */
212 if (expectRsp) {
213 prsp = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
214 if (prsp)
215 prsp->virt = lpfc_mbuf_alloc(phba, MEM_PRI,
216 &prsp->phys);
217 if (!prsp || !prsp->virt)
218 goto els_iocb_free_prsp_exit;
219 INIT_LIST_HEAD(&prsp->list);
220 } else
221 prsp = NULL;
222
223 /* Allocate buffer for Buffer ptr list */
224 pbuflist = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
225 if (pbuflist)
226 pbuflist->virt = lpfc_mbuf_alloc(phba, MEM_PRI,
227 &pbuflist->phys);
228 if (!pbuflist || !pbuflist->virt)
229 goto els_iocb_free_pbuf_exit;
230
231 INIT_LIST_HEAD(&pbuflist->list);
232
233 if (expectRsp) {
234 icmd->un.elsreq64.bdl.addrHigh = putPaddrHigh(pbuflist->phys);
235 icmd->un.elsreq64.bdl.addrLow = putPaddrLow(pbuflist->phys);
236 icmd->un.elsreq64.bdl.bdeFlags = BUFF_TYPE_BLP_64;
237 icmd->un.elsreq64.bdl.bdeSize = (2 * sizeof(struct ulp_bde64));
238
239 icmd->un.elsreq64.remoteID = did; /* DID */
240 icmd->ulpCommand = CMD_ELS_REQUEST64_CR;
241 icmd->ulpTimeout = phba->fc_ratov * 2;
242 } else {
243 icmd->un.xseq64.bdl.addrHigh = putPaddrHigh(pbuflist->phys);
244 icmd->un.xseq64.bdl.addrLow = putPaddrLow(pbuflist->phys);
245 icmd->un.xseq64.bdl.bdeFlags = BUFF_TYPE_BLP_64;
246 icmd->un.xseq64.bdl.bdeSize = sizeof(struct ulp_bde64);
247 icmd->un.xseq64.xmit_els_remoteID = did; /* DID */
248 icmd->ulpCommand = CMD_XMIT_ELS_RSP64_CX;
249 }
250 icmd->ulpBdeCount = 1;
251 icmd->ulpLe = 1;
252 icmd->ulpClass = CLASS3;
253
254 /*
255 * If we have NPIV enabled, we want to send ELS traffic by VPI.
256 * For SLI4, since the driver controls VPIs we also want to include
257 * all ELS pt2pt protocol traffic as well.
258 */
259 if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) ||
260 ((phba->sli_rev == LPFC_SLI_REV4) &&
261 (vport->fc_flag & FC_PT2PT))) {
262
263 if (expectRsp) {
264 icmd->un.elsreq64.myID = vport->fc_myDID;
265
266 /* For ELS_REQUEST64_CR, use the VPI by default */
267 icmd->ulpContext = phba->vpi_ids[vport->vpi];
268 }
269
270 icmd->ulpCt_h = 0;
271 /* The CT field must be 0=INVALID_RPI for the ECHO cmd */
272 if (elscmd == ELS_CMD_ECHO)
273 icmd->ulpCt_l = 0; /* context = invalid RPI */
274 else
275 icmd->ulpCt_l = 1; /* context = VPI */
276 }
277
278 bpl = (struct ulp_bde64 *) pbuflist->virt;
279 bpl->addrLow = le32_to_cpu(putPaddrLow(pcmd->phys));
280 bpl->addrHigh = le32_to_cpu(putPaddrHigh(pcmd->phys));
281 bpl->tus.f.bdeSize = cmdSize;
282 bpl->tus.f.bdeFlags = 0;
283 bpl->tus.w = le32_to_cpu(bpl->tus.w);
284
285 if (expectRsp) {
286 bpl++;
287 bpl->addrLow = le32_to_cpu(putPaddrLow(prsp->phys));
288 bpl->addrHigh = le32_to_cpu(putPaddrHigh(prsp->phys));
289 bpl->tus.f.bdeSize = FCELSSIZE;
290 bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64;
291 bpl->tus.w = le32_to_cpu(bpl->tus.w);
292 }
293
294 /* prevent preparing iocb with NULL ndlp reference */
295 elsiocb->context1 = lpfc_nlp_get(ndlp);
296 if (!elsiocb->context1)
297 goto els_iocb_free_pbuf_exit;
298 elsiocb->context2 = pcmd;
299 elsiocb->context3 = pbuflist;
300 elsiocb->retry = retry;
301 elsiocb->vport = vport;
302 elsiocb->drvrTimeout = (phba->fc_ratov << 1) + LPFC_DRVR_TIMEOUT;
303
304 if (prsp) {
305 list_add(&prsp->list, &pcmd->list);
306 }
307 if (expectRsp) {
308 /* Xmit ELS command <elsCmd> to remote NPORT <did> */
309 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
310 "0116 Xmit ELS command x%x to remote "
311 "NPORT x%x I/O tag: x%x, port state: x%x\n",
312 elscmd, did, elsiocb->iotag,
313 vport->port_state);
314 } else {
315 /* Xmit ELS response <elsCmd> to remote NPORT <did> */
316 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
317 "0117 Xmit ELS response x%x to remote "
318 "NPORT x%x I/O tag: x%x, size: x%x\n",
319 elscmd, ndlp->nlp_DID, elsiocb->iotag,
320 cmdSize);
321 }
322 return elsiocb;
323
324 els_iocb_free_pbuf_exit:
325 if (expectRsp)
326 lpfc_mbuf_free(phba, prsp->virt, prsp->phys);
327 kfree(pbuflist);
328
329 els_iocb_free_prsp_exit:
330 lpfc_mbuf_free(phba, pcmd->virt, pcmd->phys);
331 kfree(prsp);
332
333 els_iocb_free_pcmb_exit:
334 kfree(pcmd);
335 lpfc_sli_release_iocbq(phba, elsiocb);
336 return NULL;
337 }
338
339 /**
340 * lpfc_issue_fabric_reglogin - Issue fabric registration login for a vport
341 * @vport: pointer to a host virtual N_Port data structure.
342 *
343 * This routine issues a fabric registration login for a @vport. An
344 * active ndlp node with Fabric_DID must already exist for this @vport.
345 * The routine invokes two mailbox commands to carry out fabric registration
346 * login through the HBA firmware: the first mailbox command requests the
347 * HBA to perform link configuration for the @vport; and the second mailbox
348 * command requests the HBA to perform the actual fabric registration login
349 * with the @vport.
350 *
351 * Return code
352 * 0 - successfully issued fabric registration login for @vport
353 * -ENXIO -- failed to issue fabric registration login for @vport
354 **/
355 int
356 lpfc_issue_fabric_reglogin(struct lpfc_vport *vport)
357 {
358 struct lpfc_hba *phba = vport->phba;
359 LPFC_MBOXQ_t *mbox;
360 struct lpfc_dmabuf *mp;
361 struct lpfc_nodelist *ndlp;
362 struct serv_parm *sp;
363 int rc;
364 int err = 0;
365
366 sp = &phba->fc_fabparam;
367 ndlp = lpfc_findnode_did(vport, Fabric_DID);
368 if (!ndlp || !NLP_CHK_NODE_ACT(ndlp)) {
369 err = 1;
370 goto fail;
371 }
372
373 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
374 if (!mbox) {
375 err = 2;
376 goto fail;
377 }
378
379 vport->port_state = LPFC_FABRIC_CFG_LINK;
380 lpfc_config_link(phba, mbox);
381 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
382 mbox->vport = vport;
383
384 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
385 if (rc == MBX_NOT_FINISHED) {
386 err = 3;
387 goto fail_free_mbox;
388 }
389
390 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
391 if (!mbox) {
392 err = 4;
393 goto fail;
394 }
395 rc = lpfc_reg_rpi(phba, vport->vpi, Fabric_DID, (uint8_t *)sp, mbox,
396 ndlp->nlp_rpi);
397 if (rc) {
398 err = 5;
399 goto fail_free_mbox;
400 }
401
402 mbox->mbox_cmpl = lpfc_mbx_cmpl_fabric_reg_login;
403 mbox->vport = vport;
404 /* increment the reference count on ndlp to hold reference
405 * for the callback routine.
406 */
407 mbox->context2 = lpfc_nlp_get(ndlp);
408
409 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
410 if (rc == MBX_NOT_FINISHED) {
411 err = 6;
412 goto fail_issue_reg_login;
413 }
414
415 return 0;
416
417 fail_issue_reg_login:
418 /* decrement the reference count on ndlp just incremented
419 * for the failed mbox command.
420 */
421 lpfc_nlp_put(ndlp);
422 mp = (struct lpfc_dmabuf *) mbox->context1;
423 lpfc_mbuf_free(phba, mp->virt, mp->phys);
424 kfree(mp);
425 fail_free_mbox:
426 mempool_free(mbox, phba->mbox_mem_pool);
427
428 fail:
429 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
430 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
431 "0249 Cannot issue Register Fabric login: Err %d\n", err);
432 return -ENXIO;
433 }
434
435 /**
436 * lpfc_issue_reg_vfi - Register VFI for this vport's fabric login
437 * @vport: pointer to a host virtual N_Port data structure.
438 *
439 * This routine issues a REG_VFI mailbox for the vfi, vpi, fcfi triplet for
440 * the @vport. This mailbox command is necessary for SLI4 port only.
441 *
442 * Return code
443 * 0 - successfully issued REG_VFI for @vport
444 * A failure code otherwise.
445 **/
446 int
447 lpfc_issue_reg_vfi(struct lpfc_vport *vport)
448 {
449 struct lpfc_hba *phba = vport->phba;
450 LPFC_MBOXQ_t *mboxq;
451 struct lpfc_nodelist *ndlp;
452 struct serv_parm *sp;
453 struct lpfc_dmabuf *dmabuf;
454 int rc = 0;
455
456 sp = &phba->fc_fabparam;
457 /* move forward in case of SLI4 FC port loopback test and pt2pt mode */
458 if ((phba->sli_rev == LPFC_SLI_REV4) &&
459 !(phba->link_flag & LS_LOOPBACK_MODE) &&
460 !(vport->fc_flag & FC_PT2PT)) {
461 ndlp = lpfc_findnode_did(vport, Fabric_DID);
462 if (!ndlp || !NLP_CHK_NODE_ACT(ndlp)) {
463 rc = -ENODEV;
464 goto fail;
465 }
466 }
467
468 dmabuf = kzalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
469 if (!dmabuf) {
470 rc = -ENOMEM;
471 goto fail;
472 }
473 dmabuf->virt = lpfc_mbuf_alloc(phba, MEM_PRI, &dmabuf->phys);
474 if (!dmabuf->virt) {
475 rc = -ENOMEM;
476 goto fail_free_dmabuf;
477 }
478
479 mboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
480 if (!mboxq) {
481 rc = -ENOMEM;
482 goto fail_free_coherent;
483 }
484 vport->port_state = LPFC_FABRIC_CFG_LINK;
485 memcpy(dmabuf->virt, &phba->fc_fabparam, sizeof(vport->fc_sparam));
486 lpfc_reg_vfi(mboxq, vport, dmabuf->phys);
487 mboxq->mbox_cmpl = lpfc_mbx_cmpl_reg_vfi;
488 mboxq->vport = vport;
489 mboxq->context1 = dmabuf;
490 rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_NOWAIT);
491 if (rc == MBX_NOT_FINISHED) {
492 rc = -ENXIO;
493 goto fail_free_mbox;
494 }
495 return 0;
496
497 fail_free_mbox:
498 mempool_free(mboxq, phba->mbox_mem_pool);
499 fail_free_coherent:
500 lpfc_mbuf_free(phba, dmabuf->virt, dmabuf->phys);
501 fail_free_dmabuf:
502 kfree(dmabuf);
503 fail:
504 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
505 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
506 "0289 Issue Register VFI failed: Err %d\n", rc);
507 return rc;
508 }
509
510 /**
511 * lpfc_issue_unreg_vfi - Unregister VFI for this vport's fabric login
512 * @vport: pointer to a host virtual N_Port data structure.
513 *
514 * This routine issues a UNREG_VFI mailbox with the vfi, vpi, fcfi triplet for
515 * the @vport. This mailbox command is necessary for SLI4 port only.
516 *
517 * Return code
518 * 0 - successfully issued REG_VFI for @vport
519 * A failure code otherwise.
520 **/
521 int
522 lpfc_issue_unreg_vfi(struct lpfc_vport *vport)
523 {
524 struct lpfc_hba *phba = vport->phba;
525 struct Scsi_Host *shost;
526 LPFC_MBOXQ_t *mboxq;
527 int rc;
528
529 mboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
530 if (!mboxq) {
531 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY|LOG_MBOX,
532 "2556 UNREG_VFI mbox allocation failed"
533 "HBA state x%x\n", phba->pport->port_state);
534 return -ENOMEM;
535 }
536
537 lpfc_unreg_vfi(mboxq, vport);
538 mboxq->vport = vport;
539 mboxq->mbox_cmpl = lpfc_unregister_vfi_cmpl;
540
541 rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_NOWAIT);
542 if (rc == MBX_NOT_FINISHED) {
543 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY|LOG_MBOX,
544 "2557 UNREG_VFI issue mbox failed rc x%x "
545 "HBA state x%x\n",
546 rc, phba->pport->port_state);
547 mempool_free(mboxq, phba->mbox_mem_pool);
548 return -EIO;
549 }
550
551 shost = lpfc_shost_from_vport(vport);
552 spin_lock_irq(shost->host_lock);
553 vport->fc_flag &= ~FC_VFI_REGISTERED;
554 spin_unlock_irq(shost->host_lock);
555 return 0;
556 }
557
558 /**
559 * lpfc_check_clean_addr_bit - Check whether assigned FCID is clean.
560 * @vport: pointer to a host virtual N_Port data structure.
561 * @sp: pointer to service parameter data structure.
562 *
563 * This routine is called from FLOGI/FDISC completion handler functions.
564 * lpfc_check_clean_addr_bit return 1 when FCID/Fabric portname/ Fabric
565 * node nodename is changed in the completion service parameter else return
566 * 0. This function also set flag in the vport data structure to delay
567 * NP_Port discovery after the FLOGI/FDISC completion if Clean address bit
568 * in FLOGI/FDISC response is cleared and FCID/Fabric portname/ Fabric
569 * node nodename is changed in the completion service parameter.
570 *
571 * Return code
572 * 0 - FCID and Fabric Nodename and Fabric portname is not changed.
573 * 1 - FCID or Fabric Nodename or Fabric portname is changed.
574 *
575 **/
576 static uint8_t
577 lpfc_check_clean_addr_bit(struct lpfc_vport *vport,
578 struct serv_parm *sp)
579 {
580 uint8_t fabric_param_changed = 0;
581 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
582
583 if ((vport->fc_prevDID != vport->fc_myDID) ||
584 memcmp(&vport->fabric_portname, &sp->portName,
585 sizeof(struct lpfc_name)) ||
586 memcmp(&vport->fabric_nodename, &sp->nodeName,
587 sizeof(struct lpfc_name)))
588 fabric_param_changed = 1;
589
590 /*
591 * Word 1 Bit 31 in common service parameter is overloaded.
592 * Word 1 Bit 31 in FLOGI request is multiple NPort request
593 * Word 1 Bit 31 in FLOGI response is clean address bit
594 *
595 * If fabric parameter is changed and clean address bit is
596 * cleared delay nport discovery if
597 * - vport->fc_prevDID != 0 (not initial discovery) OR
598 * - lpfc_delay_discovery module parameter is set.
599 */
600 if (fabric_param_changed && !sp->cmn.clean_address_bit &&
601 (vport->fc_prevDID || lpfc_delay_discovery)) {
602 spin_lock_irq(shost->host_lock);
603 vport->fc_flag |= FC_DISC_DELAYED;
604 spin_unlock_irq(shost->host_lock);
605 }
606
607 return fabric_param_changed;
608 }
609
610
611 /**
612 * lpfc_cmpl_els_flogi_fabric - Completion function for flogi to a fabric port
613 * @vport: pointer to a host virtual N_Port data structure.
614 * @ndlp: pointer to a node-list data structure.
615 * @sp: pointer to service parameter data structure.
616 * @irsp: pointer to the IOCB within the lpfc response IOCB.
617 *
618 * This routine is invoked by the lpfc_cmpl_els_flogi() completion callback
619 * function to handle the completion of a Fabric Login (FLOGI) into a fabric
620 * port in a fabric topology. It properly sets up the parameters to the @ndlp
621 * from the IOCB response. It also check the newly assigned N_Port ID to the
622 * @vport against the previously assigned N_Port ID. If it is different from
623 * the previously assigned Destination ID (DID), the lpfc_unreg_rpi() routine
624 * is invoked on all the remaining nodes with the @vport to unregister the
625 * Remote Port Indicators (RPIs). Finally, the lpfc_issue_fabric_reglogin()
626 * is invoked to register login to the fabric.
627 *
628 * Return code
629 * 0 - Success (currently, always return 0)
630 **/
631 static int
632 lpfc_cmpl_els_flogi_fabric(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
633 struct serv_parm *sp, IOCB_t *irsp)
634 {
635 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
636 struct lpfc_hba *phba = vport->phba;
637 struct lpfc_nodelist *np;
638 struct lpfc_nodelist *next_np;
639 uint8_t fabric_param_changed;
640
641 spin_lock_irq(shost->host_lock);
642 vport->fc_flag |= FC_FABRIC;
643 spin_unlock_irq(shost->host_lock);
644
645 phba->fc_edtov = be32_to_cpu(sp->cmn.e_d_tov);
646 if (sp->cmn.edtovResolution) /* E_D_TOV ticks are in nanoseconds */
647 phba->fc_edtov = (phba->fc_edtov + 999999) / 1000000;
648
649 phba->fc_edtovResol = sp->cmn.edtovResolution;
650 phba->fc_ratov = (be32_to_cpu(sp->cmn.w2.r_a_tov) + 999) / 1000;
651
652 if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
653 spin_lock_irq(shost->host_lock);
654 vport->fc_flag |= FC_PUBLIC_LOOP;
655 spin_unlock_irq(shost->host_lock);
656 }
657
658 vport->fc_myDID = irsp->un.ulpWord[4] & Mask_DID;
659 memcpy(&ndlp->nlp_portname, &sp->portName, sizeof(struct lpfc_name));
660 memcpy(&ndlp->nlp_nodename, &sp->nodeName, sizeof(struct lpfc_name));
661 ndlp->nlp_class_sup = 0;
662 if (sp->cls1.classValid)
663 ndlp->nlp_class_sup |= FC_COS_CLASS1;
664 if (sp->cls2.classValid)
665 ndlp->nlp_class_sup |= FC_COS_CLASS2;
666 if (sp->cls3.classValid)
667 ndlp->nlp_class_sup |= FC_COS_CLASS3;
668 if (sp->cls4.classValid)
669 ndlp->nlp_class_sup |= FC_COS_CLASS4;
670 ndlp->nlp_maxframe = ((sp->cmn.bbRcvSizeMsb & 0x0F) << 8) |
671 sp->cmn.bbRcvSizeLsb;
672
673 fabric_param_changed = lpfc_check_clean_addr_bit(vport, sp);
674 memcpy(&vport->fabric_portname, &sp->portName,
675 sizeof(struct lpfc_name));
676 memcpy(&vport->fabric_nodename, &sp->nodeName,
677 sizeof(struct lpfc_name));
678 memcpy(&phba->fc_fabparam, sp, sizeof(struct serv_parm));
679
680 if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) {
681 if (sp->cmn.response_multiple_NPort) {
682 lpfc_printf_vlog(vport, KERN_WARNING,
683 LOG_ELS | LOG_VPORT,
684 "1816 FLOGI NPIV supported, "
685 "response data 0x%x\n",
686 sp->cmn.response_multiple_NPort);
687 spin_lock_irq(&phba->hbalock);
688 phba->link_flag |= LS_NPIV_FAB_SUPPORTED;
689 spin_unlock_irq(&phba->hbalock);
690 } else {
691 /* Because we asked f/w for NPIV it still expects us
692 to call reg_vnpid atleast for the physcial host */
693 lpfc_printf_vlog(vport, KERN_WARNING,
694 LOG_ELS | LOG_VPORT,
695 "1817 Fabric does not support NPIV "
696 "- configuring single port mode.\n");
697 spin_lock_irq(&phba->hbalock);
698 phba->link_flag &= ~LS_NPIV_FAB_SUPPORTED;
699 spin_unlock_irq(&phba->hbalock);
700 }
701 }
702
703 if (fabric_param_changed &&
704 !(vport->fc_flag & FC_VPORT_NEEDS_REG_VPI)) {
705
706 /* If our NportID changed, we need to ensure all
707 * remaining NPORTs get unreg_login'ed.
708 */
709 list_for_each_entry_safe(np, next_np,
710 &vport->fc_nodes, nlp_listp) {
711 if (!NLP_CHK_NODE_ACT(np))
712 continue;
713 if ((np->nlp_state != NLP_STE_NPR_NODE) ||
714 !(np->nlp_flag & NLP_NPR_ADISC))
715 continue;
716 spin_lock_irq(shost->host_lock);
717 np->nlp_flag &= ~NLP_NPR_ADISC;
718 spin_unlock_irq(shost->host_lock);
719 lpfc_unreg_rpi(vport, np);
720 }
721 lpfc_cleanup_pending_mbox(vport);
722
723 if (phba->sli_rev == LPFC_SLI_REV4) {
724 lpfc_sli4_unreg_all_rpis(vport);
725 lpfc_mbx_unreg_vpi(vport);
726 spin_lock_irq(shost->host_lock);
727 vport->fc_flag |= FC_VPORT_NEEDS_INIT_VPI;
728 spin_unlock_irq(shost->host_lock);
729 }
730
731 /*
732 * For SLI3 and SLI4, the VPI needs to be reregistered in
733 * response to this fabric parameter change event.
734 */
735 spin_lock_irq(shost->host_lock);
736 vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
737 spin_unlock_irq(shost->host_lock);
738 } else if ((phba->sli_rev == LPFC_SLI_REV4) &&
739 !(vport->fc_flag & FC_VPORT_NEEDS_REG_VPI)) {
740 /*
741 * Driver needs to re-reg VPI in order for f/w
742 * to update the MAC address.
743 */
744 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
745 lpfc_register_new_vport(phba, vport, ndlp);
746 return 0;
747 }
748
749 if (phba->sli_rev < LPFC_SLI_REV4) {
750 lpfc_nlp_set_state(vport, ndlp, NLP_STE_REG_LOGIN_ISSUE);
751 if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED &&
752 vport->fc_flag & FC_VPORT_NEEDS_REG_VPI)
753 lpfc_register_new_vport(phba, vport, ndlp);
754 else
755 lpfc_issue_fabric_reglogin(vport);
756 } else {
757 ndlp->nlp_type |= NLP_FABRIC;
758 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
759 if ((!(vport->fc_flag & FC_VPORT_NEEDS_REG_VPI)) &&
760 (vport->vpi_state & LPFC_VPI_REGISTERED)) {
761 lpfc_start_fdiscs(phba);
762 lpfc_do_scr_ns_plogi(phba, vport);
763 } else if (vport->fc_flag & FC_VFI_REGISTERED)
764 lpfc_issue_init_vpi(vport);
765 else {
766 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
767 "3135 Need register VFI: (x%x/%x)\n",
768 vport->fc_prevDID, vport->fc_myDID);
769 lpfc_issue_reg_vfi(vport);
770 }
771 }
772 return 0;
773 }
774
775 /**
776 * lpfc_cmpl_els_flogi_nport - Completion function for flogi to an N_Port
777 * @vport: pointer to a host virtual N_Port data structure.
778 * @ndlp: pointer to a node-list data structure.
779 * @sp: pointer to service parameter data structure.
780 *
781 * This routine is invoked by the lpfc_cmpl_els_flogi() completion callback
782 * function to handle the completion of a Fabric Login (FLOGI) into an N_Port
783 * in a point-to-point topology. First, the @vport's N_Port Name is compared
784 * with the received N_Port Name: if the @vport's N_Port Name is greater than
785 * the received N_Port Name lexicographically, this node shall assign local
786 * N_Port ID (PT2PT_LocalID: 1) and remote N_Port ID (PT2PT_RemoteID: 2) and
787 * will send out Port Login (PLOGI) with the N_Port IDs assigned. Otherwise,
788 * this node shall just wait for the remote node to issue PLOGI and assign
789 * N_Port IDs.
790 *
791 * Return code
792 * 0 - Success
793 * -ENXIO - Fail
794 **/
795 static int
796 lpfc_cmpl_els_flogi_nport(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
797 struct serv_parm *sp)
798 {
799 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
800 struct lpfc_hba *phba = vport->phba;
801 LPFC_MBOXQ_t *mbox;
802 int rc;
803
804 spin_lock_irq(shost->host_lock);
805 vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP);
806 spin_unlock_irq(shost->host_lock);
807
808 phba->fc_edtov = FF_DEF_EDTOV;
809 phba->fc_ratov = FF_DEF_RATOV;
810 rc = memcmp(&vport->fc_portname, &sp->portName,
811 sizeof(vport->fc_portname));
812 if (rc >= 0) {
813 /* This side will initiate the PLOGI */
814 spin_lock_irq(shost->host_lock);
815 vport->fc_flag |= FC_PT2PT_PLOGI;
816 spin_unlock_irq(shost->host_lock);
817
818 /*
819 * N_Port ID cannot be 0, set our to LocalID the other
820 * side will be RemoteID.
821 */
822
823 /* not equal */
824 if (rc)
825 vport->fc_myDID = PT2PT_LocalID;
826
827 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
828 if (!mbox)
829 goto fail;
830
831 lpfc_config_link(phba, mbox);
832
833 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
834 mbox->vport = vport;
835 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
836 if (rc == MBX_NOT_FINISHED) {
837 mempool_free(mbox, phba->mbox_mem_pool);
838 goto fail;
839 }
840
841 /*
842 * For SLI4, the VFI/VPI are registered AFTER the
843 * Nport with the higher WWPN sends the PLOGI with
844 * an assigned NPortId.
845 */
846
847 /* not equal */
848 if ((phba->sli_rev == LPFC_SLI_REV4) && rc)
849 lpfc_issue_reg_vfi(vport);
850
851 /* Decrement ndlp reference count indicating that ndlp can be
852 * safely released when other references to it are done.
853 */
854 lpfc_nlp_put(ndlp);
855
856 ndlp = lpfc_findnode_did(vport, PT2PT_RemoteID);
857 if (!ndlp) {
858 /*
859 * Cannot find existing Fabric ndlp, so allocate a
860 * new one
861 */
862 ndlp = mempool_alloc(phba->nlp_mem_pool, GFP_KERNEL);
863 if (!ndlp)
864 goto fail;
865 lpfc_nlp_init(vport, ndlp, PT2PT_RemoteID);
866 } else if (!NLP_CHK_NODE_ACT(ndlp)) {
867 ndlp = lpfc_enable_node(vport, ndlp,
868 NLP_STE_UNUSED_NODE);
869 if(!ndlp)
870 goto fail;
871 }
872
873 memcpy(&ndlp->nlp_portname, &sp->portName,
874 sizeof(struct lpfc_name));
875 memcpy(&ndlp->nlp_nodename, &sp->nodeName,
876 sizeof(struct lpfc_name));
877 /* Set state will put ndlp onto node list if not already done */
878 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
879 spin_lock_irq(shost->host_lock);
880 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
881 spin_unlock_irq(shost->host_lock);
882 } else
883 /* This side will wait for the PLOGI, decrement ndlp reference
884 * count indicating that ndlp can be released when other
885 * references to it are done.
886 */
887 lpfc_nlp_put(ndlp);
888
889 /* If we are pt2pt with another NPort, force NPIV off! */
890 phba->sli3_options &= ~LPFC_SLI3_NPIV_ENABLED;
891
892 spin_lock_irq(shost->host_lock);
893 vport->fc_flag |= FC_PT2PT;
894 spin_unlock_irq(shost->host_lock);
895
896 /* Start discovery - this should just do CLEAR_LA */
897 lpfc_disc_start(vport);
898 return 0;
899 fail:
900 return -ENXIO;
901 }
902
903 /**
904 * lpfc_cmpl_els_flogi - Completion callback function for flogi
905 * @phba: pointer to lpfc hba data structure.
906 * @cmdiocb: pointer to lpfc command iocb data structure.
907 * @rspiocb: pointer to lpfc response iocb data structure.
908 *
909 * This routine is the top-level completion callback function for issuing
910 * a Fabric Login (FLOGI) command. If the response IOCB reported error,
911 * the lpfc_els_retry() routine shall be invoked to retry the FLOGI. If
912 * retry has been made (either immediately or delayed with lpfc_els_retry()
913 * returning 1), the command IOCB will be released and function returned.
914 * If the retry attempt has been given up (possibly reach the maximum
915 * number of retries), one additional decrement of ndlp reference shall be
916 * invoked before going out after releasing the command IOCB. This will
917 * actually release the remote node (Note, lpfc_els_free_iocb() will also
918 * invoke one decrement of ndlp reference count). If no error reported in
919 * the IOCB status, the command Port ID field is used to determine whether
920 * this is a point-to-point topology or a fabric topology: if the Port ID
921 * field is assigned, it is a fabric topology; otherwise, it is a
922 * point-to-point topology. The routine lpfc_cmpl_els_flogi_fabric() or
923 * lpfc_cmpl_els_flogi_nport() shall be invoked accordingly to handle the
924 * specific topology completion conditions.
925 **/
926 static void
927 lpfc_cmpl_els_flogi(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
928 struct lpfc_iocbq *rspiocb)
929 {
930 struct lpfc_vport *vport = cmdiocb->vport;
931 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
932 IOCB_t *irsp = &rspiocb->iocb;
933 struct lpfc_nodelist *ndlp = cmdiocb->context1;
934 struct lpfc_dmabuf *pcmd = cmdiocb->context2, *prsp;
935 struct serv_parm *sp;
936 uint16_t fcf_index;
937 int rc;
938
939 /* Check to see if link went down during discovery */
940 if (lpfc_els_chk_latt(vport)) {
941 /* One additional decrement on node reference count to
942 * trigger the release of the node
943 */
944 lpfc_nlp_put(ndlp);
945 goto out;
946 }
947
948 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
949 "FLOGI cmpl: status:x%x/x%x state:x%x",
950 irsp->ulpStatus, irsp->un.ulpWord[4],
951 vport->port_state);
952
953 if (irsp->ulpStatus) {
954 /*
955 * In case of FIP mode, perform roundrobin FCF failover
956 * due to new FCF discovery
957 */
958 if ((phba->hba_flag & HBA_FIP_SUPPORT) &&
959 (phba->fcf.fcf_flag & FCF_DISCOVERY)) {
960 if (phba->link_state < LPFC_LINK_UP)
961 goto stop_rr_fcf_flogi;
962 if ((phba->fcoe_cvl_eventtag_attn ==
963 phba->fcoe_cvl_eventtag) &&
964 (irsp->ulpStatus == IOSTAT_LOCAL_REJECT) &&
965 (irsp->un.ulpWord[4] == IOERR_SLI_ABORTED))
966 goto stop_rr_fcf_flogi;
967 else
968 phba->fcoe_cvl_eventtag_attn =
969 phba->fcoe_cvl_eventtag;
970 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP | LOG_ELS,
971 "2611 FLOGI failed on FCF (x%x), "
972 "status:x%x/x%x, tmo:x%x, perform "
973 "roundrobin FCF failover\n",
974 phba->fcf.current_rec.fcf_indx,
975 irsp->ulpStatus, irsp->un.ulpWord[4],
976 irsp->ulpTimeout);
977 lpfc_sli4_set_fcf_flogi_fail(phba,
978 phba->fcf.current_rec.fcf_indx);
979 fcf_index = lpfc_sli4_fcf_rr_next_index_get(phba);
980 rc = lpfc_sli4_fcf_rr_next_proc(vport, fcf_index);
981 if (rc)
982 goto out;
983 }
984
985 stop_rr_fcf_flogi:
986 /* FLOGI failure */
987 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
988 "2858 FLOGI failure Status:x%x/x%x TMO:x%x\n",
989 irsp->ulpStatus, irsp->un.ulpWord[4],
990 irsp->ulpTimeout);
991
992 /* Check for retry */
993 if (lpfc_els_retry(phba, cmdiocb, rspiocb))
994 goto out;
995
996 /* FLOGI failure */
997 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
998 "0100 FLOGI failure Status:x%x/x%x TMO:x%x\n",
999 irsp->ulpStatus, irsp->un.ulpWord[4],
1000 irsp->ulpTimeout);
1001
1002 /* FLOGI failed, so there is no fabric */
1003 spin_lock_irq(shost->host_lock);
1004 vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP);
1005 spin_unlock_irq(shost->host_lock);
1006
1007 /* If private loop, then allow max outstanding els to be
1008 * LPFC_MAX_DISC_THREADS (32). Scanning in the case of no
1009 * alpa map would take too long otherwise.
1010 */
1011 if (phba->alpa_map[0] == 0)
1012 vport->cfg_discovery_threads = LPFC_MAX_DISC_THREADS;
1013 if ((phba->sli_rev == LPFC_SLI_REV4) &&
1014 (!(vport->fc_flag & FC_VFI_REGISTERED) ||
1015 (vport->fc_prevDID != vport->fc_myDID))) {
1016 if (vport->fc_flag & FC_VFI_REGISTERED)
1017 lpfc_sli4_unreg_all_rpis(vport);
1018 lpfc_issue_reg_vfi(vport);
1019 lpfc_nlp_put(ndlp);
1020 goto out;
1021 }
1022 goto flogifail;
1023 }
1024 spin_lock_irq(shost->host_lock);
1025 vport->fc_flag &= ~FC_VPORT_CVL_RCVD;
1026 vport->fc_flag &= ~FC_VPORT_LOGO_RCVD;
1027 spin_unlock_irq(shost->host_lock);
1028
1029 /*
1030 * The FLogI succeeded. Sync the data for the CPU before
1031 * accessing it.
1032 */
1033 prsp = list_get_first(&pcmd->list, struct lpfc_dmabuf, list);
1034
1035 sp = prsp->virt + sizeof(uint32_t);
1036
1037 /* FLOGI completes successfully */
1038 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
1039 "0101 FLOGI completes successfully "
1040 "Data: x%x x%x x%x x%x\n",
1041 irsp->un.ulpWord[4], sp->cmn.e_d_tov,
1042 sp->cmn.w2.r_a_tov, sp->cmn.edtovResolution);
1043
1044 if (vport->port_state == LPFC_FLOGI) {
1045 /*
1046 * If Common Service Parameters indicate Nport
1047 * we are point to point, if Fport we are Fabric.
1048 */
1049 if (sp->cmn.fPort)
1050 rc = lpfc_cmpl_els_flogi_fabric(vport, ndlp, sp, irsp);
1051 else if (!(phba->hba_flag & HBA_FCOE_MODE))
1052 rc = lpfc_cmpl_els_flogi_nport(vport, ndlp, sp);
1053 else {
1054 lpfc_printf_vlog(vport, KERN_ERR,
1055 LOG_FIP | LOG_ELS,
1056 "2831 FLOGI response with cleared Fabric "
1057 "bit fcf_index 0x%x "
1058 "Switch Name %02x%02x%02x%02x%02x%02x%02x%02x "
1059 "Fabric Name "
1060 "%02x%02x%02x%02x%02x%02x%02x%02x\n",
1061 phba->fcf.current_rec.fcf_indx,
1062 phba->fcf.current_rec.switch_name[0],
1063 phba->fcf.current_rec.switch_name[1],
1064 phba->fcf.current_rec.switch_name[2],
1065 phba->fcf.current_rec.switch_name[3],
1066 phba->fcf.current_rec.switch_name[4],
1067 phba->fcf.current_rec.switch_name[5],
1068 phba->fcf.current_rec.switch_name[6],
1069 phba->fcf.current_rec.switch_name[7],
1070 phba->fcf.current_rec.fabric_name[0],
1071 phba->fcf.current_rec.fabric_name[1],
1072 phba->fcf.current_rec.fabric_name[2],
1073 phba->fcf.current_rec.fabric_name[3],
1074 phba->fcf.current_rec.fabric_name[4],
1075 phba->fcf.current_rec.fabric_name[5],
1076 phba->fcf.current_rec.fabric_name[6],
1077 phba->fcf.current_rec.fabric_name[7]);
1078 lpfc_nlp_put(ndlp);
1079 spin_lock_irq(&phba->hbalock);
1080 phba->fcf.fcf_flag &= ~FCF_DISCOVERY;
1081 phba->hba_flag &= ~(FCF_RR_INPROG | HBA_DEVLOSS_TMO);
1082 spin_unlock_irq(&phba->hbalock);
1083 goto out;
1084 }
1085 if (!rc) {
1086 /* Mark the FCF discovery process done */
1087 if (phba->hba_flag & HBA_FIP_SUPPORT)
1088 lpfc_printf_vlog(vport, KERN_INFO, LOG_FIP |
1089 LOG_ELS,
1090 "2769 FLOGI to FCF (x%x) "
1091 "completed successfully\n",
1092 phba->fcf.current_rec.fcf_indx);
1093 spin_lock_irq(&phba->hbalock);
1094 phba->fcf.fcf_flag &= ~FCF_DISCOVERY;
1095 phba->hba_flag &= ~(FCF_RR_INPROG | HBA_DEVLOSS_TMO);
1096 spin_unlock_irq(&phba->hbalock);
1097 goto out;
1098 }
1099 }
1100
1101 flogifail:
1102 lpfc_nlp_put(ndlp);
1103
1104 if (!lpfc_error_lost_link(irsp)) {
1105 /* FLOGI failed, so just use loop map to make discovery list */
1106 lpfc_disc_list_loopmap(vport);
1107
1108 /* Start discovery */
1109 lpfc_disc_start(vport);
1110 } else if (((irsp->ulpStatus != IOSTAT_LOCAL_REJECT) ||
1111 ((irsp->un.ulpWord[4] != IOERR_SLI_ABORTED) &&
1112 (irsp->un.ulpWord[4] != IOERR_SLI_DOWN))) &&
1113 (phba->link_state != LPFC_CLEAR_LA)) {
1114 /* If FLOGI failed enable link interrupt. */
1115 lpfc_issue_clear_la(phba, vport);
1116 }
1117 out:
1118 lpfc_els_free_iocb(phba, cmdiocb);
1119 }
1120
1121 /**
1122 * lpfc_issue_els_flogi - Issue an flogi iocb command for a vport
1123 * @vport: pointer to a host virtual N_Port data structure.
1124 * @ndlp: pointer to a node-list data structure.
1125 * @retry: number of retries to the command IOCB.
1126 *
1127 * This routine issues a Fabric Login (FLOGI) Request ELS command
1128 * for a @vport. The initiator service parameters are put into the payload
1129 * of the FLOGI Request IOCB and the top-level callback function pointer
1130 * to lpfc_cmpl_els_flogi() routine is put to the IOCB completion callback
1131 * function field. The lpfc_issue_fabric_iocb routine is invoked to send
1132 * out FLOGI ELS command with one outstanding fabric IOCB at a time.
1133 *
1134 * Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp
1135 * will be incremented by 1 for holding the ndlp and the reference to ndlp
1136 * will be stored into the context1 field of the IOCB for the completion
1137 * callback function to the FLOGI ELS command.
1138 *
1139 * Return code
1140 * 0 - successfully issued flogi iocb for @vport
1141 * 1 - failed to issue flogi iocb for @vport
1142 **/
1143 static int
1144 lpfc_issue_els_flogi(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1145 uint8_t retry)
1146 {
1147 struct lpfc_hba *phba = vport->phba;
1148 struct serv_parm *sp;
1149 IOCB_t *icmd;
1150 struct lpfc_iocbq *elsiocb;
1151 struct lpfc_sli_ring *pring;
1152 uint8_t *pcmd;
1153 uint16_t cmdsize;
1154 uint32_t tmo;
1155 int rc;
1156
1157 pring = &phba->sli.ring[LPFC_ELS_RING];
1158
1159 cmdsize = (sizeof(uint32_t) + sizeof(struct serv_parm));
1160 elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp,
1161 ndlp->nlp_DID, ELS_CMD_FLOGI);
1162
1163 if (!elsiocb)
1164 return 1;
1165
1166 icmd = &elsiocb->iocb;
1167 pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
1168
1169 /* For FLOGI request, remainder of payload is service parameters */
1170 *((uint32_t *) (pcmd)) = ELS_CMD_FLOGI;
1171 pcmd += sizeof(uint32_t);
1172 memcpy(pcmd, &vport->fc_sparam, sizeof(struct serv_parm));
1173 sp = (struct serv_parm *) pcmd;
1174
1175 /* Setup CSPs accordingly for Fabric */
1176 sp->cmn.e_d_tov = 0;
1177 sp->cmn.w2.r_a_tov = 0;
1178 sp->cmn.virtual_fabric_support = 0;
1179 sp->cls1.classValid = 0;
1180 sp->cls2.seqDelivery = 1;
1181 sp->cls3.seqDelivery = 1;
1182 if (sp->cmn.fcphLow < FC_PH3)
1183 sp->cmn.fcphLow = FC_PH3;
1184 if (sp->cmn.fcphHigh < FC_PH3)
1185 sp->cmn.fcphHigh = FC_PH3;
1186
1187 if (phba->sli_rev == LPFC_SLI_REV4) {
1188 if (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) ==
1189 LPFC_SLI_INTF_IF_TYPE_0) {
1190 elsiocb->iocb.ulpCt_h = ((SLI4_CT_FCFI >> 1) & 1);
1191 elsiocb->iocb.ulpCt_l = (SLI4_CT_FCFI & 1);
1192 /* FLOGI needs to be 3 for WQE FCFI */
1193 /* Set the fcfi to the fcfi we registered with */
1194 elsiocb->iocb.ulpContext = phba->fcf.fcfi;
1195 }
1196 } else {
1197 if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) {
1198 sp->cmn.request_multiple_Nport = 1;
1199 /* For FLOGI, Let FLOGI rsp set the NPortID for VPI 0 */
1200 icmd->ulpCt_h = 1;
1201 icmd->ulpCt_l = 0;
1202 } else
1203 sp->cmn.request_multiple_Nport = 0;
1204 }
1205
1206 if (phba->fc_topology != LPFC_TOPOLOGY_LOOP) {
1207 icmd->un.elsreq64.myID = 0;
1208 icmd->un.elsreq64.fl = 1;
1209 }
1210
1211 tmo = phba->fc_ratov;
1212 phba->fc_ratov = LPFC_DISC_FLOGI_TMO;
1213 lpfc_set_disctmo(vport);
1214 phba->fc_ratov = tmo;
1215
1216 phba->fc_stat.elsXmitFLOGI++;
1217 elsiocb->iocb_cmpl = lpfc_cmpl_els_flogi;
1218
1219 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
1220 "Issue FLOGI: opt:x%x",
1221 phba->sli3_options, 0, 0);
1222
1223 rc = lpfc_issue_fabric_iocb(phba, elsiocb);
1224 if (rc == IOCB_ERROR) {
1225 lpfc_els_free_iocb(phba, elsiocb);
1226 return 1;
1227 }
1228 return 0;
1229 }
1230
1231 /**
1232 * lpfc_els_abort_flogi - Abort all outstanding flogi iocbs
1233 * @phba: pointer to lpfc hba data structure.
1234 *
1235 * This routine aborts all the outstanding Fabric Login (FLOGI) IOCBs
1236 * with a @phba. This routine walks all the outstanding IOCBs on the txcmplq
1237 * list and issues an abort IOCB commond on each outstanding IOCB that
1238 * contains a active Fabric_DID ndlp. Note that this function is to issue
1239 * the abort IOCB command on all the outstanding IOCBs, thus when this
1240 * function returns, it does not guarantee all the IOCBs are actually aborted.
1241 *
1242 * Return code
1243 * 0 - Successfully issued abort iocb on all outstanding flogis (Always 0)
1244 **/
1245 int
1246 lpfc_els_abort_flogi(struct lpfc_hba *phba)
1247 {
1248 struct lpfc_sli_ring *pring;
1249 struct lpfc_iocbq *iocb, *next_iocb;
1250 struct lpfc_nodelist *ndlp;
1251 IOCB_t *icmd;
1252
1253 /* Abort outstanding I/O on NPort <nlp_DID> */
1254 lpfc_printf_log(phba, KERN_INFO, LOG_DISCOVERY,
1255 "0201 Abort outstanding I/O on NPort x%x\n",
1256 Fabric_DID);
1257
1258 pring = &phba->sli.ring[LPFC_ELS_RING];
1259
1260 /*
1261 * Check the txcmplq for an iocb that matches the nport the driver is
1262 * searching for.
1263 */
1264 spin_lock_irq(&phba->hbalock);
1265 list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq, list) {
1266 icmd = &iocb->iocb;
1267 if (icmd->ulpCommand == CMD_ELS_REQUEST64_CR) {
1268 ndlp = (struct lpfc_nodelist *)(iocb->context1);
1269 if (ndlp && NLP_CHK_NODE_ACT(ndlp) &&
1270 (ndlp->nlp_DID == Fabric_DID))
1271 lpfc_sli_issue_abort_iotag(phba, pring, iocb);
1272 }
1273 }
1274 spin_unlock_irq(&phba->hbalock);
1275
1276 return 0;
1277 }
1278
1279 /**
1280 * lpfc_initial_flogi - Issue an initial fabric login for a vport
1281 * @vport: pointer to a host virtual N_Port data structure.
1282 *
1283 * This routine issues an initial Fabric Login (FLOGI) for the @vport
1284 * specified. It first searches the ndlp with the Fabric_DID (0xfffffe) from
1285 * the @vport's ndlp list. If no such ndlp found, it will create an ndlp and
1286 * put it into the @vport's ndlp list. If an inactive ndlp found on the list,
1287 * it will just be enabled and made active. The lpfc_issue_els_flogi() routine
1288 * is then invoked with the @vport and the ndlp to perform the FLOGI for the
1289 * @vport.
1290 *
1291 * Return code
1292 * 0 - failed to issue initial flogi for @vport
1293 * 1 - successfully issued initial flogi for @vport
1294 **/
1295 int
1296 lpfc_initial_flogi(struct lpfc_vport *vport)
1297 {
1298 struct lpfc_hba *phba = vport->phba;
1299 struct lpfc_nodelist *ndlp;
1300
1301 vport->port_state = LPFC_FLOGI;
1302 lpfc_set_disctmo(vport);
1303
1304 /* First look for the Fabric ndlp */
1305 ndlp = lpfc_findnode_did(vport, Fabric_DID);
1306 if (!ndlp) {
1307 /* Cannot find existing Fabric ndlp, so allocate a new one */
1308 ndlp = mempool_alloc(phba->nlp_mem_pool, GFP_KERNEL);
1309 if (!ndlp)
1310 return 0;
1311 lpfc_nlp_init(vport, ndlp, Fabric_DID);
1312 /* Set the node type */
1313 ndlp->nlp_type |= NLP_FABRIC;
1314 /* Put ndlp onto node list */
1315 lpfc_enqueue_node(vport, ndlp);
1316 } else if (!NLP_CHK_NODE_ACT(ndlp)) {
1317 /* re-setup ndlp without removing from node list */
1318 ndlp = lpfc_enable_node(vport, ndlp, NLP_STE_UNUSED_NODE);
1319 if (!ndlp)
1320 return 0;
1321 }
1322
1323 if (lpfc_issue_els_flogi(vport, ndlp, 0)) {
1324 /* This decrement of reference count to node shall kick off
1325 * the release of the node.
1326 */
1327 lpfc_nlp_put(ndlp);
1328 return 0;
1329 }
1330 return 1;
1331 }
1332
1333 /**
1334 * lpfc_initial_fdisc - Issue an initial fabric discovery for a vport
1335 * @vport: pointer to a host virtual N_Port data structure.
1336 *
1337 * This routine issues an initial Fabric Discover (FDISC) for the @vport
1338 * specified. It first searches the ndlp with the Fabric_DID (0xfffffe) from
1339 * the @vport's ndlp list. If no such ndlp found, it will create an ndlp and
1340 * put it into the @vport's ndlp list. If an inactive ndlp found on the list,
1341 * it will just be enabled and made active. The lpfc_issue_els_fdisc() routine
1342 * is then invoked with the @vport and the ndlp to perform the FDISC for the
1343 * @vport.
1344 *
1345 * Return code
1346 * 0 - failed to issue initial fdisc for @vport
1347 * 1 - successfully issued initial fdisc for @vport
1348 **/
1349 int
1350 lpfc_initial_fdisc(struct lpfc_vport *vport)
1351 {
1352 struct lpfc_hba *phba = vport->phba;
1353 struct lpfc_nodelist *ndlp;
1354
1355 /* First look for the Fabric ndlp */
1356 ndlp = lpfc_findnode_did(vport, Fabric_DID);
1357 if (!ndlp) {
1358 /* Cannot find existing Fabric ndlp, so allocate a new one */
1359 ndlp = mempool_alloc(phba->nlp_mem_pool, GFP_KERNEL);
1360 if (!ndlp)
1361 return 0;
1362 lpfc_nlp_init(vport, ndlp, Fabric_DID);
1363 /* Put ndlp onto node list */
1364 lpfc_enqueue_node(vport, ndlp);
1365 } else if (!NLP_CHK_NODE_ACT(ndlp)) {
1366 /* re-setup ndlp without removing from node list */
1367 ndlp = lpfc_enable_node(vport, ndlp, NLP_STE_UNUSED_NODE);
1368 if (!ndlp)
1369 return 0;
1370 }
1371
1372 if (lpfc_issue_els_fdisc(vport, ndlp, 0)) {
1373 /* decrement node reference count to trigger the release of
1374 * the node.
1375 */
1376 lpfc_nlp_put(ndlp);
1377 return 0;
1378 }
1379 return 1;
1380 }
1381
1382 /**
1383 * lpfc_more_plogi - Check and issue remaining plogis for a vport
1384 * @vport: pointer to a host virtual N_Port data structure.
1385 *
1386 * This routine checks whether there are more remaining Port Logins
1387 * (PLOGI) to be issued for the @vport. If so, it will invoke the routine
1388 * lpfc_els_disc_plogi() to go through the Node Port Recovery (NPR) nodes
1389 * to issue ELS PLOGIs up to the configured discover threads with the
1390 * @vport (@vport->cfg_discovery_threads). The function also decrement
1391 * the @vport's num_disc_node by 1 if it is not already 0.
1392 **/
1393 void
1394 lpfc_more_plogi(struct lpfc_vport *vport)
1395 {
1396 int sentplogi;
1397
1398 if (vport->num_disc_nodes)
1399 vport->num_disc_nodes--;
1400
1401 /* Continue discovery with <num_disc_nodes> PLOGIs to go */
1402 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
1403 "0232 Continue discovery with %d PLOGIs to go "
1404 "Data: x%x x%x x%x\n",
1405 vport->num_disc_nodes, vport->fc_plogi_cnt,
1406 vport->fc_flag, vport->port_state);
1407 /* Check to see if there are more PLOGIs to be sent */
1408 if (vport->fc_flag & FC_NLP_MORE)
1409 /* go thru NPR nodes and issue any remaining ELS PLOGIs */
1410 sentplogi = lpfc_els_disc_plogi(vport);
1411
1412 return;
1413 }
1414
1415 /**
1416 * lpfc_plogi_confirm_nport - Confirm pologi wwpn matches stored ndlp
1417 * @phba: pointer to lpfc hba data structure.
1418 * @prsp: pointer to response IOCB payload.
1419 * @ndlp: pointer to a node-list data structure.
1420 *
1421 * This routine checks and indicates whether the WWPN of an N_Port, retrieved
1422 * from a PLOGI, matches the WWPN that is stored in the @ndlp for that N_POrt.
1423 * The following cases are considered N_Port confirmed:
1424 * 1) The N_Port is a Fabric ndlp; 2) The @ndlp is on vport list and matches
1425 * the WWPN of the N_Port logged into; 3) The @ndlp is not on vport list but
1426 * it does not have WWPN assigned either. If the WWPN is confirmed, the
1427 * pointer to the @ndlp will be returned. If the WWPN is not confirmed:
1428 * 1) if there is a node on vport list other than the @ndlp with the same
1429 * WWPN of the N_Port PLOGI logged into, the lpfc_unreg_rpi() will be invoked
1430 * on that node to release the RPI associated with the node; 2) if there is
1431 * no node found on vport list with the same WWPN of the N_Port PLOGI logged
1432 * into, a new node shall be allocated (or activated). In either case, the
1433 * parameters of the @ndlp shall be copied to the new_ndlp, the @ndlp shall
1434 * be released and the new_ndlp shall be put on to the vport node list and
1435 * its pointer returned as the confirmed node.
1436 *
1437 * Note that before the @ndlp got "released", the keepDID from not-matching
1438 * or inactive "new_ndlp" on the vport node list is assigned to the nlp_DID
1439 * of the @ndlp. This is because the release of @ndlp is actually to put it
1440 * into an inactive state on the vport node list and the vport node list
1441 * management algorithm does not allow two node with a same DID.
1442 *
1443 * Return code
1444 * pointer to the PLOGI N_Port @ndlp
1445 **/
1446 static struct lpfc_nodelist *
1447 lpfc_plogi_confirm_nport(struct lpfc_hba *phba, uint32_t *prsp,
1448 struct lpfc_nodelist *ndlp)
1449 {
1450 struct lpfc_vport *vport = ndlp->vport;
1451 struct lpfc_nodelist *new_ndlp;
1452 struct lpfc_rport_data *rdata;
1453 struct fc_rport *rport;
1454 struct serv_parm *sp;
1455 uint8_t name[sizeof(struct lpfc_name)];
1456 uint32_t rc, keepDID = 0;
1457 int put_node;
1458 int put_rport;
1459 struct lpfc_node_rrqs rrq;
1460
1461 /* Fabric nodes can have the same WWPN so we don't bother searching
1462 * by WWPN. Just return the ndlp that was given to us.
1463 */
1464 if (ndlp->nlp_type & NLP_FABRIC)
1465 return ndlp;
1466
1467 sp = (struct serv_parm *) ((uint8_t *) prsp + sizeof(uint32_t));
1468 memset(name, 0, sizeof(struct lpfc_name));
1469
1470 /* Now we find out if the NPort we are logging into, matches the WWPN
1471 * we have for that ndlp. If not, we have some work to do.
1472 */
1473 new_ndlp = lpfc_findnode_wwpn(vport, &sp->portName);
1474
1475 if (new_ndlp == ndlp && NLP_CHK_NODE_ACT(new_ndlp))
1476 return ndlp;
1477 memset(&rrq.xri_bitmap, 0, sizeof(new_ndlp->active_rrqs.xri_bitmap));
1478
1479 if (!new_ndlp) {
1480 rc = memcmp(&ndlp->nlp_portname, name,
1481 sizeof(struct lpfc_name));
1482 if (!rc)
1483 return ndlp;
1484 new_ndlp = mempool_alloc(phba->nlp_mem_pool, GFP_ATOMIC);
1485 if (!new_ndlp)
1486 return ndlp;
1487 lpfc_nlp_init(vport, new_ndlp, ndlp->nlp_DID);
1488 } else if (!NLP_CHK_NODE_ACT(new_ndlp)) {
1489 rc = memcmp(&ndlp->nlp_portname, name,
1490 sizeof(struct lpfc_name));
1491 if (!rc)
1492 return ndlp;
1493 new_ndlp = lpfc_enable_node(vport, new_ndlp,
1494 NLP_STE_UNUSED_NODE);
1495 if (!new_ndlp)
1496 return ndlp;
1497 keepDID = new_ndlp->nlp_DID;
1498 if (phba->sli_rev == LPFC_SLI_REV4)
1499 memcpy(&rrq.xri_bitmap,
1500 &new_ndlp->active_rrqs.xri_bitmap,
1501 sizeof(new_ndlp->active_rrqs.xri_bitmap));
1502 } else {
1503 keepDID = new_ndlp->nlp_DID;
1504 if (phba->sli_rev == LPFC_SLI_REV4)
1505 memcpy(&rrq.xri_bitmap,
1506 &new_ndlp->active_rrqs.xri_bitmap,
1507 sizeof(new_ndlp->active_rrqs.xri_bitmap));
1508 }
1509
1510 lpfc_unreg_rpi(vport, new_ndlp);
1511 new_ndlp->nlp_DID = ndlp->nlp_DID;
1512 new_ndlp->nlp_prev_state = ndlp->nlp_prev_state;
1513 if (phba->sli_rev == LPFC_SLI_REV4)
1514 memcpy(new_ndlp->active_rrqs.xri_bitmap,
1515 &ndlp->active_rrqs.xri_bitmap,
1516 sizeof(ndlp->active_rrqs.xri_bitmap));
1517
1518 if (ndlp->nlp_flag & NLP_NPR_2B_DISC)
1519 new_ndlp->nlp_flag |= NLP_NPR_2B_DISC;
1520 ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
1521
1522 /* Set state will put new_ndlp on to node list if not already done */
1523 lpfc_nlp_set_state(vport, new_ndlp, ndlp->nlp_state);
1524
1525 /* Move this back to NPR state */
1526 if (memcmp(&ndlp->nlp_portname, name, sizeof(struct lpfc_name)) == 0) {
1527 /* The new_ndlp is replacing ndlp totally, so we need
1528 * to put ndlp on UNUSED list and try to free it.
1529 */
1530
1531 /* Fix up the rport accordingly */
1532 rport = ndlp->rport;
1533 if (rport) {
1534 rdata = rport->dd_data;
1535 if (rdata->pnode == ndlp) {
1536 lpfc_nlp_put(ndlp);
1537 ndlp->rport = NULL;
1538 rdata->pnode = lpfc_nlp_get(new_ndlp);
1539 new_ndlp->rport = rport;
1540 }
1541 new_ndlp->nlp_type = ndlp->nlp_type;
1542 }
1543 /* We shall actually free the ndlp with both nlp_DID and
1544 * nlp_portname fields equals 0 to avoid any ndlp on the
1545 * nodelist never to be used.
1546 */
1547 if (ndlp->nlp_DID == 0) {
1548 spin_lock_irq(&phba->ndlp_lock);
1549 NLP_SET_FREE_REQ(ndlp);
1550 spin_unlock_irq(&phba->ndlp_lock);
1551 }
1552
1553 /* Two ndlps cannot have the same did on the nodelist */
1554 ndlp->nlp_DID = keepDID;
1555 if (phba->sli_rev == LPFC_SLI_REV4)
1556 memcpy(&ndlp->active_rrqs.xri_bitmap,
1557 &rrq.xri_bitmap,
1558 sizeof(ndlp->active_rrqs.xri_bitmap));
1559 lpfc_drop_node(vport, ndlp);
1560 }
1561 else {
1562 lpfc_unreg_rpi(vport, ndlp);
1563 /* Two ndlps cannot have the same did */
1564 ndlp->nlp_DID = keepDID;
1565 if (phba->sli_rev == LPFC_SLI_REV4)
1566 memcpy(&ndlp->active_rrqs.xri_bitmap,
1567 &rrq.xri_bitmap,
1568 sizeof(ndlp->active_rrqs.xri_bitmap));
1569 /* Since we are swapping the ndlp passed in with the new one
1570 * and the did has already been swapped, copy over the
1571 * state and names.
1572 */
1573 memcpy(&new_ndlp->nlp_portname, &ndlp->nlp_portname,
1574 sizeof(struct lpfc_name));
1575 memcpy(&new_ndlp->nlp_nodename, &ndlp->nlp_nodename,
1576 sizeof(struct lpfc_name));
1577 new_ndlp->nlp_state = ndlp->nlp_state;
1578 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1579 /* Fix up the rport accordingly */
1580 rport = ndlp->rport;
1581 if (rport) {
1582 rdata = rport->dd_data;
1583 put_node = rdata->pnode != NULL;
1584 put_rport = ndlp->rport != NULL;
1585 rdata->pnode = NULL;
1586 ndlp->rport = NULL;
1587 if (put_node)
1588 lpfc_nlp_put(ndlp);
1589 if (put_rport)
1590 put_device(&rport->dev);
1591 }
1592 }
1593 return new_ndlp;
1594 }
1595
1596 /**
1597 * lpfc_end_rscn - Check and handle more rscn for a vport
1598 * @vport: pointer to a host virtual N_Port data structure.
1599 *
1600 * This routine checks whether more Registration State Change
1601 * Notifications (RSCNs) came in while the discovery state machine was in
1602 * the FC_RSCN_MODE. If so, the lpfc_els_handle_rscn() routine will be
1603 * invoked to handle the additional RSCNs for the @vport. Otherwise, the
1604 * FC_RSCN_MODE bit will be cleared with the @vport to mark as the end of
1605 * handling the RSCNs.
1606 **/
1607 void
1608 lpfc_end_rscn(struct lpfc_vport *vport)
1609 {
1610 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1611
1612 if (vport->fc_flag & FC_RSCN_MODE) {
1613 /*
1614 * Check to see if more RSCNs came in while we were
1615 * processing this one.
1616 */
1617 if (vport->fc_rscn_id_cnt ||
1618 (vport->fc_flag & FC_RSCN_DISCOVERY) != 0)
1619 lpfc_els_handle_rscn(vport);
1620 else {
1621 spin_lock_irq(shost->host_lock);
1622 vport->fc_flag &= ~FC_RSCN_MODE;
1623 spin_unlock_irq(shost->host_lock);
1624 }
1625 }
1626 }
1627
1628 /**
1629 * lpfc_cmpl_els_rrq - Completion handled for els RRQs.
1630 * @phba: pointer to lpfc hba data structure.
1631 * @cmdiocb: pointer to lpfc command iocb data structure.
1632 * @rspiocb: pointer to lpfc response iocb data structure.
1633 *
1634 * This routine will call the clear rrq function to free the rrq and
1635 * clear the xri's bit in the ndlp's xri_bitmap. If the ndlp does not
1636 * exist then the clear_rrq is still called because the rrq needs to
1637 * be freed.
1638 **/
1639
1640 static void
1641 lpfc_cmpl_els_rrq(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
1642 struct lpfc_iocbq *rspiocb)
1643 {
1644 struct lpfc_vport *vport = cmdiocb->vport;
1645 IOCB_t *irsp;
1646 struct lpfc_nodelist *ndlp;
1647 struct lpfc_node_rrq *rrq;
1648
1649 /* we pass cmdiocb to state machine which needs rspiocb as well */
1650 rrq = cmdiocb->context_un.rrq;
1651 cmdiocb->context_un.rsp_iocb = rspiocb;
1652
1653 irsp = &rspiocb->iocb;
1654 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
1655 "RRQ cmpl: status:x%x/x%x did:x%x",
1656 irsp->ulpStatus, irsp->un.ulpWord[4],
1657 irsp->un.elsreq64.remoteID);
1658
1659 ndlp = lpfc_findnode_did(vport, irsp->un.elsreq64.remoteID);
1660 if (!ndlp || !NLP_CHK_NODE_ACT(ndlp) || ndlp != rrq->ndlp) {
1661 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
1662 "2882 RRQ completes to NPort x%x "
1663 "with no ndlp. Data: x%x x%x x%x\n",
1664 irsp->un.elsreq64.remoteID,
1665 irsp->ulpStatus, irsp->un.ulpWord[4],
1666 irsp->ulpIoTag);
1667 goto out;
1668 }
1669
1670 /* rrq completes to NPort <nlp_DID> */
1671 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
1672 "2880 RRQ completes to NPort x%x "
1673 "Data: x%x x%x x%x x%x x%x\n",
1674 ndlp->nlp_DID, irsp->ulpStatus, irsp->un.ulpWord[4],
1675 irsp->ulpTimeout, rrq->xritag, rrq->rxid);
1676
1677 if (irsp->ulpStatus) {
1678 /* Check for retry */
1679 /* RRQ failed Don't print the vport to vport rjts */
1680 if (irsp->ulpStatus != IOSTAT_LS_RJT ||
1681 (((irsp->un.ulpWord[4]) >> 16 != LSRJT_INVALID_CMD) &&
1682 ((irsp->un.ulpWord[4]) >> 16 != LSRJT_UNABLE_TPC)) ||
1683 (phba)->pport->cfg_log_verbose & LOG_ELS)
1684 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
1685 "2881 RRQ failure DID:%06X Status:x%x/x%x\n",
1686 ndlp->nlp_DID, irsp->ulpStatus,
1687 irsp->un.ulpWord[4]);
1688 }
1689 out:
1690 if (rrq)
1691 lpfc_clr_rrq_active(phba, rrq->xritag, rrq);
1692 lpfc_els_free_iocb(phba, cmdiocb);
1693 return;
1694 }
1695 /**
1696 * lpfc_cmpl_els_plogi - Completion callback function for plogi
1697 * @phba: pointer to lpfc hba data structure.
1698 * @cmdiocb: pointer to lpfc command iocb data structure.
1699 * @rspiocb: pointer to lpfc response iocb data structure.
1700 *
1701 * This routine is the completion callback function for issuing the Port
1702 * Login (PLOGI) command. For PLOGI completion, there must be an active
1703 * ndlp on the vport node list that matches the remote node ID from the
1704 * PLOGI response IOCB. If such ndlp does not exist, the PLOGI is simply
1705 * ignored and command IOCB released. The PLOGI response IOCB status is
1706 * checked for error conditons. If there is error status reported, PLOGI
1707 * retry shall be attempted by invoking the lpfc_els_retry() routine.
1708 * Otherwise, the lpfc_plogi_confirm_nport() routine shall be invoked on
1709 * the ndlp and the NLP_EVT_CMPL_PLOGI state to the Discover State Machine
1710 * (DSM) is set for this PLOGI completion. Finally, it checks whether
1711 * there are additional N_Port nodes with the vport that need to perform
1712 * PLOGI. If so, the lpfc_more_plogi() routine is invoked to issue addition
1713 * PLOGIs.
1714 **/
1715 static void
1716 lpfc_cmpl_els_plogi(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
1717 struct lpfc_iocbq *rspiocb)
1718 {
1719 struct lpfc_vport *vport = cmdiocb->vport;
1720 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1721 IOCB_t *irsp;
1722 struct lpfc_nodelist *ndlp;
1723 struct lpfc_dmabuf *prsp;
1724 int disc, rc, did, type;
1725
1726 /* we pass cmdiocb to state machine which needs rspiocb as well */
1727 cmdiocb->context_un.rsp_iocb = rspiocb;
1728
1729 irsp = &rspiocb->iocb;
1730 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
1731 "PLOGI cmpl: status:x%x/x%x did:x%x",
1732 irsp->ulpStatus, irsp->un.ulpWord[4],
1733 irsp->un.elsreq64.remoteID);
1734
1735 ndlp = lpfc_findnode_did(vport, irsp->un.elsreq64.remoteID);
1736 if (!ndlp || !NLP_CHK_NODE_ACT(ndlp)) {
1737 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
1738 "0136 PLOGI completes to NPort x%x "
1739 "with no ndlp. Data: x%x x%x x%x\n",
1740 irsp->un.elsreq64.remoteID,
1741 irsp->ulpStatus, irsp->un.ulpWord[4],
1742 irsp->ulpIoTag);
1743 goto out;
1744 }
1745
1746 /* Since ndlp can be freed in the disc state machine, note if this node
1747 * is being used during discovery.
1748 */
1749 spin_lock_irq(shost->host_lock);
1750 disc = (ndlp->nlp_flag & NLP_NPR_2B_DISC);
1751 ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
1752 spin_unlock_irq(shost->host_lock);
1753 rc = 0;
1754
1755 /* PLOGI completes to NPort <nlp_DID> */
1756 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
1757 "0102 PLOGI completes to NPort x%x "
1758 "Data: x%x x%x x%x x%x x%x\n",
1759 ndlp->nlp_DID, irsp->ulpStatus, irsp->un.ulpWord[4],
1760 irsp->ulpTimeout, disc, vport->num_disc_nodes);
1761 /* Check to see if link went down during discovery */
1762 if (lpfc_els_chk_latt(vport)) {
1763 spin_lock_irq(shost->host_lock);
1764 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
1765 spin_unlock_irq(shost->host_lock);
1766 goto out;
1767 }
1768
1769 /* ndlp could be freed in DSM, save these values now */
1770 type = ndlp->nlp_type;
1771 did = ndlp->nlp_DID;
1772
1773 if (irsp->ulpStatus) {
1774 /* Check for retry */
1775 if (lpfc_els_retry(phba, cmdiocb, rspiocb)) {
1776 /* ELS command is being retried */
1777 if (disc) {
1778 spin_lock_irq(shost->host_lock);
1779 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
1780 spin_unlock_irq(shost->host_lock);
1781 }
1782 goto out;
1783 }
1784 /* PLOGI failed Don't print the vport to vport rjts */
1785 if (irsp->ulpStatus != IOSTAT_LS_RJT ||
1786 (((irsp->un.ulpWord[4]) >> 16 != LSRJT_INVALID_CMD) &&
1787 ((irsp->un.ulpWord[4]) >> 16 != LSRJT_UNABLE_TPC)) ||
1788 (phba)->pport->cfg_log_verbose & LOG_ELS)
1789 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
1790 "2753 PLOGI failure DID:%06X Status:x%x/x%x\n",
1791 ndlp->nlp_DID, irsp->ulpStatus,
1792 irsp->un.ulpWord[4]);
1793 /* Do not call DSM for lpfc_els_abort'ed ELS cmds */
1794 if (lpfc_error_lost_link(irsp))
1795 rc = NLP_STE_FREED_NODE;
1796 else
1797 rc = lpfc_disc_state_machine(vport, ndlp, cmdiocb,
1798 NLP_EVT_CMPL_PLOGI);
1799 } else {
1800 /* Good status, call state machine */
1801 prsp = list_entry(((struct lpfc_dmabuf *)
1802 cmdiocb->context2)->list.next,
1803 struct lpfc_dmabuf, list);
1804 ndlp = lpfc_plogi_confirm_nport(phba, prsp->virt, ndlp);
1805 rc = lpfc_disc_state_machine(vport, ndlp, cmdiocb,
1806 NLP_EVT_CMPL_PLOGI);
1807 }
1808
1809 if (disc && vport->num_disc_nodes) {
1810 /* Check to see if there are more PLOGIs to be sent */
1811 lpfc_more_plogi(vport);
1812
1813 if (vport->num_disc_nodes == 0) {
1814 spin_lock_irq(shost->host_lock);
1815 vport->fc_flag &= ~FC_NDISC_ACTIVE;
1816 spin_unlock_irq(shost->host_lock);
1817
1818 lpfc_can_disctmo(vport);
1819 lpfc_end_rscn(vport);
1820 }
1821 }
1822
1823 out:
1824 lpfc_els_free_iocb(phba, cmdiocb);
1825 return;
1826 }
1827
1828 /**
1829 * lpfc_issue_els_plogi - Issue an plogi iocb command for a vport
1830 * @vport: pointer to a host virtual N_Port data structure.
1831 * @did: destination port identifier.
1832 * @retry: number of retries to the command IOCB.
1833 *
1834 * This routine issues a Port Login (PLOGI) command to a remote N_Port
1835 * (with the @did) for a @vport. Before issuing a PLOGI to a remote N_Port,
1836 * the ndlp with the remote N_Port DID must exist on the @vport's ndlp list.
1837 * This routine constructs the proper feilds of the PLOGI IOCB and invokes
1838 * the lpfc_sli_issue_iocb() routine to send out PLOGI ELS command.
1839 *
1840 * Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp
1841 * will be incremented by 1 for holding the ndlp and the reference to ndlp
1842 * will be stored into the context1 field of the IOCB for the completion
1843 * callback function to the PLOGI ELS command.
1844 *
1845 * Return code
1846 * 0 - Successfully issued a plogi for @vport
1847 * 1 - failed to issue a plogi for @vport
1848 **/
1849 int
1850 lpfc_issue_els_plogi(struct lpfc_vport *vport, uint32_t did, uint8_t retry)
1851 {
1852 struct lpfc_hba *phba = vport->phba;
1853 struct serv_parm *sp;
1854 IOCB_t *icmd;
1855 struct lpfc_nodelist *ndlp;
1856 struct lpfc_iocbq *elsiocb;
1857 struct lpfc_sli *psli;
1858 uint8_t *pcmd;
1859 uint16_t cmdsize;
1860 int ret;
1861
1862 psli = &phba->sli;
1863
1864 ndlp = lpfc_findnode_did(vport, did);
1865 if (ndlp && !NLP_CHK_NODE_ACT(ndlp))
1866 ndlp = NULL;
1867
1868 /* If ndlp is not NULL, we will bump the reference count on it */
1869 cmdsize = (sizeof(uint32_t) + sizeof(struct serv_parm));
1870 elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp, did,
1871 ELS_CMD_PLOGI);
1872 if (!elsiocb)
1873 return 1;
1874
1875 icmd = &elsiocb->iocb;
1876 pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
1877
1878 /* For PLOGI request, remainder of payload is service parameters */
1879 *((uint32_t *) (pcmd)) = ELS_CMD_PLOGI;
1880 pcmd += sizeof(uint32_t);
1881 memcpy(pcmd, &vport->fc_sparam, sizeof(struct serv_parm));
1882 sp = (struct serv_parm *) pcmd;
1883
1884 /*
1885 * If we are a N-port connected to a Fabric, fix-up paramm's so logins
1886 * to device on remote loops work.
1887 */
1888 if ((vport->fc_flag & FC_FABRIC) && !(vport->fc_flag & FC_PUBLIC_LOOP))
1889 sp->cmn.altBbCredit = 1;
1890
1891 if (sp->cmn.fcphLow < FC_PH_4_3)
1892 sp->cmn.fcphLow = FC_PH_4_3;
1893
1894 if (sp->cmn.fcphHigh < FC_PH3)
1895 sp->cmn.fcphHigh = FC_PH3;
1896
1897 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
1898 "Issue PLOGI: did:x%x",
1899 did, 0, 0);
1900
1901 phba->fc_stat.elsXmitPLOGI++;
1902 elsiocb->iocb_cmpl = lpfc_cmpl_els_plogi;
1903 ret = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
1904
1905 if (ret == IOCB_ERROR) {
1906 lpfc_els_free_iocb(phba, elsiocb);
1907 return 1;
1908 }
1909 return 0;
1910 }
1911
1912 /**
1913 * lpfc_cmpl_els_prli - Completion callback function for prli
1914 * @phba: pointer to lpfc hba data structure.
1915 * @cmdiocb: pointer to lpfc command iocb data structure.
1916 * @rspiocb: pointer to lpfc response iocb data structure.
1917 *
1918 * This routine is the completion callback function for a Process Login
1919 * (PRLI) ELS command. The PRLI response IOCB status is checked for error
1920 * status. If there is error status reported, PRLI retry shall be attempted
1921 * by invoking the lpfc_els_retry() routine. Otherwise, the state
1922 * NLP_EVT_CMPL_PRLI is sent to the Discover State Machine (DSM) for this
1923 * ndlp to mark the PRLI completion.
1924 **/
1925 static void
1926 lpfc_cmpl_els_prli(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
1927 struct lpfc_iocbq *rspiocb)
1928 {
1929 struct lpfc_vport *vport = cmdiocb->vport;
1930 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1931 IOCB_t *irsp;
1932 struct lpfc_sli *psli;
1933 struct lpfc_nodelist *ndlp;
1934
1935 psli = &phba->sli;
1936 /* we pass cmdiocb to state machine which needs rspiocb as well */
1937 cmdiocb->context_un.rsp_iocb = rspiocb;
1938
1939 irsp = &(rspiocb->iocb);
1940 ndlp = (struct lpfc_nodelist *) cmdiocb->context1;
1941 spin_lock_irq(shost->host_lock);
1942 ndlp->nlp_flag &= ~NLP_PRLI_SND;
1943 spin_unlock_irq(shost->host_lock);
1944
1945 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
1946 "PRLI cmpl: status:x%x/x%x did:x%x",
1947 irsp->ulpStatus, irsp->un.ulpWord[4],
1948 ndlp->nlp_DID);
1949 /* PRLI completes to NPort <nlp_DID> */
1950 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
1951 "0103 PRLI completes to NPort x%x "
1952 "Data: x%x x%x x%x x%x\n",
1953 ndlp->nlp_DID, irsp->ulpStatus, irsp->un.ulpWord[4],
1954 irsp->ulpTimeout, vport->num_disc_nodes);
1955
1956 vport->fc_prli_sent--;
1957 /* Check to see if link went down during discovery */
1958 if (lpfc_els_chk_latt(vport))
1959 goto out;
1960
1961 if (irsp->ulpStatus) {
1962 /* Check for retry */
1963 if (lpfc_els_retry(phba, cmdiocb, rspiocb)) {
1964 /* ELS command is being retried */
1965 goto out;
1966 }
1967 /* PRLI failed */
1968 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
1969 "2754 PRLI failure DID:%06X Status:x%x/x%x\n",
1970 ndlp->nlp_DID, irsp->ulpStatus,
1971 irsp->un.ulpWord[4]);
1972 /* Do not call DSM for lpfc_els_abort'ed ELS cmds */
1973 if (lpfc_error_lost_link(irsp))
1974 goto out;
1975 else
1976 lpfc_disc_state_machine(vport, ndlp, cmdiocb,
1977 NLP_EVT_CMPL_PRLI);
1978 } else
1979 /* Good status, call state machine */
1980 lpfc_disc_state_machine(vport, ndlp, cmdiocb,
1981 NLP_EVT_CMPL_PRLI);
1982 out:
1983 lpfc_els_free_iocb(phba, cmdiocb);
1984 return;
1985 }
1986
1987 /**
1988 * lpfc_issue_els_prli - Issue a prli iocb command for a vport
1989 * @vport: pointer to a host virtual N_Port data structure.
1990 * @ndlp: pointer to a node-list data structure.
1991 * @retry: number of retries to the command IOCB.
1992 *
1993 * This routine issues a Process Login (PRLI) ELS command for the
1994 * @vport. The PRLI service parameters are set up in the payload of the
1995 * PRLI Request command and the pointer to lpfc_cmpl_els_prli() routine
1996 * is put to the IOCB completion callback func field before invoking the
1997 * routine lpfc_sli_issue_iocb() to send out PRLI command.
1998 *
1999 * Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp
2000 * will be incremented by 1 for holding the ndlp and the reference to ndlp
2001 * will be stored into the context1 field of the IOCB for the completion
2002 * callback function to the PRLI ELS command.
2003 *
2004 * Return code
2005 * 0 - successfully issued prli iocb command for @vport
2006 * 1 - failed to issue prli iocb command for @vport
2007 **/
2008 int
2009 lpfc_issue_els_prli(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2010 uint8_t retry)
2011 {
2012 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2013 struct lpfc_hba *phba = vport->phba;
2014 PRLI *npr;
2015 IOCB_t *icmd;
2016 struct lpfc_iocbq *elsiocb;
2017 uint8_t *pcmd;
2018 uint16_t cmdsize;
2019
2020 cmdsize = (sizeof(uint32_t) + sizeof(PRLI));
2021 elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp,
2022 ndlp->nlp_DID, ELS_CMD_PRLI);
2023 if (!elsiocb)
2024 return 1;
2025
2026 icmd = &elsiocb->iocb;
2027 pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
2028
2029 /* For PRLI request, remainder of payload is service parameters */
2030 memset(pcmd, 0, (sizeof(PRLI) + sizeof(uint32_t)));
2031 *((uint32_t *) (pcmd)) = ELS_CMD_PRLI;
2032 pcmd += sizeof(uint32_t);
2033
2034 /* For PRLI, remainder of payload is PRLI parameter page */
2035 npr = (PRLI *) pcmd;
2036 /*
2037 * If our firmware version is 3.20 or later,
2038 * set the following bits for FC-TAPE support.
2039 */
2040 if (phba->vpd.rev.feaLevelHigh >= 0x02) {
2041 npr->ConfmComplAllowed = 1;
2042 npr->Retry = 1;
2043 npr->TaskRetryIdReq = 1;
2044 }
2045 npr->estabImagePair = 1;
2046 npr->readXferRdyDis = 1;
2047
2048 /* For FCP support */
2049 npr->prliType = PRLI_FCP_TYPE;
2050 npr->initiatorFunc = 1;
2051
2052 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
2053 "Issue PRLI: did:x%x",
2054 ndlp->nlp_DID, 0, 0);
2055
2056 phba->fc_stat.elsXmitPRLI++;
2057 elsiocb->iocb_cmpl = lpfc_cmpl_els_prli;
2058 spin_lock_irq(shost->host_lock);
2059 ndlp->nlp_flag |= NLP_PRLI_SND;
2060 spin_unlock_irq(shost->host_lock);
2061 if (lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0) ==
2062 IOCB_ERROR) {
2063 spin_lock_irq(shost->host_lock);
2064 ndlp->nlp_flag &= ~NLP_PRLI_SND;
2065 spin_unlock_irq(shost->host_lock);
2066 lpfc_els_free_iocb(phba, elsiocb);
2067 return 1;
2068 }
2069 vport->fc_prli_sent++;
2070 return 0;
2071 }
2072
2073 /**
2074 * lpfc_rscn_disc - Perform rscn discovery for a vport
2075 * @vport: pointer to a host virtual N_Port data structure.
2076 *
2077 * This routine performs Registration State Change Notification (RSCN)
2078 * discovery for a @vport. If the @vport's node port recovery count is not
2079 * zero, it will invoke the lpfc_els_disc_plogi() to perform PLOGI for all
2080 * the nodes that need recovery. If none of the PLOGI were needed through
2081 * the lpfc_els_disc_plogi() routine, the lpfc_end_rscn() routine shall be
2082 * invoked to check and handle possible more RSCN came in during the period
2083 * of processing the current ones.
2084 **/
2085 static void
2086 lpfc_rscn_disc(struct lpfc_vport *vport)
2087 {
2088 lpfc_can_disctmo(vport);
2089
2090 /* RSCN discovery */
2091 /* go thru NPR nodes and issue ELS PLOGIs */
2092 if (vport->fc_npr_cnt)
2093 if (lpfc_els_disc_plogi(vport))
2094 return;
2095
2096 lpfc_end_rscn(vport);
2097 }
2098
2099 /**
2100 * lpfc_adisc_done - Complete the adisc phase of discovery
2101 * @vport: pointer to lpfc_vport hba data structure that finished all ADISCs.
2102 *
2103 * This function is called when the final ADISC is completed during discovery.
2104 * This function handles clearing link attention or issuing reg_vpi depending
2105 * on whether npiv is enabled. This function also kicks off the PLOGI phase of
2106 * discovery.
2107 * This function is called with no locks held.
2108 **/
2109 static void
2110 lpfc_adisc_done(struct lpfc_vport *vport)
2111 {
2112 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2113 struct lpfc_hba *phba = vport->phba;
2114
2115 /*
2116 * For NPIV, cmpl_reg_vpi will set port_state to READY,
2117 * and continue discovery.
2118 */
2119 if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
2120 !(vport->fc_flag & FC_RSCN_MODE) &&
2121 (phba->sli_rev < LPFC_SLI_REV4)) {
2122 lpfc_issue_reg_vpi(phba, vport);
2123 return;
2124 }
2125 /*
2126 * For SLI2, we need to set port_state to READY
2127 * and continue discovery.
2128 */
2129 if (vport->port_state < LPFC_VPORT_READY) {
2130 /* If we get here, there is nothing to ADISC */
2131 if (vport->port_type == LPFC_PHYSICAL_PORT)
2132 lpfc_issue_clear_la(phba, vport);
2133 if (!(vport->fc_flag & FC_ABORT_DISCOVERY)) {
2134 vport->num_disc_nodes = 0;
2135 /* go thru NPR list, issue ELS PLOGIs */
2136 if (vport->fc_npr_cnt)
2137 lpfc_els_disc_plogi(vport);
2138 if (!vport->num_disc_nodes) {
2139 spin_lock_irq(shost->host_lock);
2140 vport->fc_flag &= ~FC_NDISC_ACTIVE;
2141 spin_unlock_irq(shost->host_lock);
2142 lpfc_can_disctmo(vport);
2143 lpfc_end_rscn(vport);
2144 }
2145 }
2146 vport->port_state = LPFC_VPORT_READY;
2147 } else
2148 lpfc_rscn_disc(vport);
2149 }
2150
2151 /**
2152 * lpfc_more_adisc - Issue more adisc as needed
2153 * @vport: pointer to a host virtual N_Port data structure.
2154 *
2155 * This routine determines whether there are more ndlps on a @vport
2156 * node list need to have Address Discover (ADISC) issued. If so, it will
2157 * invoke the lpfc_els_disc_adisc() routine to issue ADISC on the @vport's
2158 * remaining nodes which need to have ADISC sent.
2159 **/
2160 void
2161 lpfc_more_adisc(struct lpfc_vport *vport)
2162 {
2163 int sentadisc;
2164
2165 if (vport->num_disc_nodes)
2166 vport->num_disc_nodes--;
2167 /* Continue discovery with <num_disc_nodes> ADISCs to go */
2168 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
2169 "0210 Continue discovery with %d ADISCs to go "
2170 "Data: x%x x%x x%x\n",
2171 vport->num_disc_nodes, vport->fc_adisc_cnt,
2172 vport->fc_flag, vport->port_state);
2173 /* Check to see if there are more ADISCs to be sent */
2174 if (vport->fc_flag & FC_NLP_MORE) {
2175 lpfc_set_disctmo(vport);
2176 /* go thru NPR nodes and issue any remaining ELS ADISCs */
2177 sentadisc = lpfc_els_disc_adisc(vport);
2178 }
2179 if (!vport->num_disc_nodes)
2180 lpfc_adisc_done(vport);
2181 return;
2182 }
2183
2184 /**
2185 * lpfc_cmpl_els_adisc - Completion callback function for adisc
2186 * @phba: pointer to lpfc hba data structure.
2187 * @cmdiocb: pointer to lpfc command iocb data structure.
2188 * @rspiocb: pointer to lpfc response iocb data structure.
2189 *
2190 * This routine is the completion function for issuing the Address Discover
2191 * (ADISC) command. It first checks to see whether link went down during
2192 * the discovery process. If so, the node will be marked as node port
2193 * recovery for issuing discover IOCB by the link attention handler and
2194 * exit. Otherwise, the response status is checked. If error was reported
2195 * in the response status, the ADISC command shall be retried by invoking
2196 * the lpfc_els_retry() routine. Otherwise, if no error was reported in
2197 * the response status, the state machine is invoked to set transition
2198 * with respect to NLP_EVT_CMPL_ADISC event.
2199 **/
2200 static void
2201 lpfc_cmpl_els_adisc(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
2202 struct lpfc_iocbq *rspiocb)
2203 {
2204 struct lpfc_vport *vport = cmdiocb->vport;
2205 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2206 IOCB_t *irsp;
2207 struct lpfc_nodelist *ndlp;
2208 int disc;
2209
2210 /* we pass cmdiocb to state machine which needs rspiocb as well */
2211 cmdiocb->context_un.rsp_iocb = rspiocb;
2212
2213 irsp = &(rspiocb->iocb);
2214 ndlp = (struct lpfc_nodelist *) cmdiocb->context1;
2215
2216 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
2217 "ADISC cmpl: status:x%x/x%x did:x%x",
2218 irsp->ulpStatus, irsp->un.ulpWord[4],
2219 ndlp->nlp_DID);
2220
2221 /* Since ndlp can be freed in the disc state machine, note if this node
2222 * is being used during discovery.
2223 */
2224 spin_lock_irq(shost->host_lock);
2225 disc = (ndlp->nlp_flag & NLP_NPR_2B_DISC);
2226 ndlp->nlp_flag &= ~(NLP_ADISC_SND | NLP_NPR_2B_DISC);
2227 spin_unlock_irq(shost->host_lock);
2228 /* ADISC completes to NPort <nlp_DID> */
2229 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
2230 "0104 ADISC completes to NPort x%x "
2231 "Data: x%x x%x x%x x%x x%x\n",
2232 ndlp->nlp_DID, irsp->ulpStatus, irsp->un.ulpWord[4],
2233 irsp->ulpTimeout, disc, vport->num_disc_nodes);
2234 /* Check to see if link went down during discovery */
2235 if (lpfc_els_chk_latt(vport)) {
2236 spin_lock_irq(shost->host_lock);
2237 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
2238 spin_unlock_irq(shost->host_lock);
2239 goto out;
2240 }
2241
2242 if (irsp->ulpStatus) {
2243 /* Check for retry */
2244 if (lpfc_els_retry(phba, cmdiocb, rspiocb)) {
2245 /* ELS command is being retried */
2246 if (disc) {
2247 spin_lock_irq(shost->host_lock);
2248 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
2249 spin_unlock_irq(shost->host_lock);
2250 lpfc_set_disctmo(vport);
2251 }
2252 goto out;
2253 }
2254 /* ADISC failed */
2255 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
2256 "2755 ADISC failure DID:%06X Status:x%x/x%x\n",
2257 ndlp->nlp_DID, irsp->ulpStatus,
2258 irsp->un.ulpWord[4]);
2259 /* Do not call DSM for lpfc_els_abort'ed ELS cmds */
2260 if (!lpfc_error_lost_link(irsp))
2261 lpfc_disc_state_machine(vport, ndlp, cmdiocb,
2262 NLP_EVT_CMPL_ADISC);
2263 } else
2264 /* Good status, call state machine */
2265 lpfc_disc_state_machine(vport, ndlp, cmdiocb,
2266 NLP_EVT_CMPL_ADISC);
2267
2268 /* Check to see if there are more ADISCs to be sent */
2269 if (disc && vport->num_disc_nodes)
2270 lpfc_more_adisc(vport);
2271 out:
2272 lpfc_els_free_iocb(phba, cmdiocb);
2273 return;
2274 }
2275
2276 /**
2277 * lpfc_issue_els_adisc - Issue an address discover iocb to an node on a vport
2278 * @vport: pointer to a virtual N_Port data structure.
2279 * @ndlp: pointer to a node-list data structure.
2280 * @retry: number of retries to the command IOCB.
2281 *
2282 * This routine issues an Address Discover (ADISC) for an @ndlp on a
2283 * @vport. It prepares the payload of the ADISC ELS command, updates the
2284 * and states of the ndlp, and invokes the lpfc_sli_issue_iocb() routine
2285 * to issue the ADISC ELS command.
2286 *
2287 * Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp
2288 * will be incremented by 1 for holding the ndlp and the reference to ndlp
2289 * will be stored into the context1 field of the IOCB for the completion
2290 * callback function to the ADISC ELS command.
2291 *
2292 * Return code
2293 * 0 - successfully issued adisc
2294 * 1 - failed to issue adisc
2295 **/
2296 int
2297 lpfc_issue_els_adisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2298 uint8_t retry)
2299 {
2300 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2301 struct lpfc_hba *phba = vport->phba;
2302 ADISC *ap;
2303 IOCB_t *icmd;
2304 struct lpfc_iocbq *elsiocb;
2305 uint8_t *pcmd;
2306 uint16_t cmdsize;
2307
2308 cmdsize = (sizeof(uint32_t) + sizeof(ADISC));
2309 elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp,
2310 ndlp->nlp_DID, ELS_CMD_ADISC);
2311 if (!elsiocb)
2312 return 1;
2313
2314 icmd = &elsiocb->iocb;
2315 pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
2316
2317 /* For ADISC request, remainder of payload is service parameters */
2318 *((uint32_t *) (pcmd)) = ELS_CMD_ADISC;
2319 pcmd += sizeof(uint32_t);
2320
2321 /* Fill in ADISC payload */
2322 ap = (ADISC *) pcmd;
2323 ap->hardAL_PA = phba->fc_pref_ALPA;
2324 memcpy(&ap->portName, &vport->fc_portname, sizeof(struct lpfc_name));
2325 memcpy(&ap->nodeName, &vport->fc_nodename, sizeof(struct lpfc_name));
2326 ap->DID = be32_to_cpu(vport->fc_myDID);
2327
2328 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
2329 "Issue ADISC: did:x%x",
2330 ndlp->nlp_DID, 0, 0);
2331
2332 phba->fc_stat.elsXmitADISC++;
2333 elsiocb->iocb_cmpl = lpfc_cmpl_els_adisc;
2334 spin_lock_irq(shost->host_lock);
2335 ndlp->nlp_flag |= NLP_ADISC_SND;
2336 spin_unlock_irq(shost->host_lock);
2337 if (lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0) ==
2338 IOCB_ERROR) {
2339 spin_lock_irq(shost->host_lock);
2340 ndlp->nlp_flag &= ~NLP_ADISC_SND;
2341 spin_unlock_irq(shost->host_lock);
2342 lpfc_els_free_iocb(phba, elsiocb);
2343 return 1;
2344 }
2345 return 0;
2346 }
2347
2348 /**
2349 * lpfc_cmpl_els_logo - Completion callback function for logo
2350 * @phba: pointer to lpfc hba data structure.
2351 * @cmdiocb: pointer to lpfc command iocb data structure.
2352 * @rspiocb: pointer to lpfc response iocb data structure.
2353 *
2354 * This routine is the completion function for issuing the ELS Logout (LOGO)
2355 * command. If no error status was reported from the LOGO response, the
2356 * state machine of the associated ndlp shall be invoked for transition with
2357 * respect to NLP_EVT_CMPL_LOGO event. Otherwise, if error status was reported,
2358 * the lpfc_els_retry() routine will be invoked to retry the LOGO command.
2359 **/
2360 static void
2361 lpfc_cmpl_els_logo(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
2362 struct lpfc_iocbq *rspiocb)
2363 {
2364 struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) cmdiocb->context1;
2365 struct lpfc_vport *vport = ndlp->vport;
2366 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2367 IOCB_t *irsp;
2368 struct lpfc_sli *psli;
2369 struct lpfcMboxq *mbox;
2370
2371 psli = &phba->sli;
2372 /* we pass cmdiocb to state machine which needs rspiocb as well */
2373 cmdiocb->context_un.rsp_iocb = rspiocb;
2374
2375 irsp = &(rspiocb->iocb);
2376 spin_lock_irq(shost->host_lock);
2377 ndlp->nlp_flag &= ~NLP_LOGO_SND;
2378 spin_unlock_irq(shost->host_lock);
2379
2380 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
2381 "LOGO cmpl: status:x%x/x%x did:x%x",
2382 irsp->ulpStatus, irsp->un.ulpWord[4],
2383 ndlp->nlp_DID);
2384 /* LOGO completes to NPort <nlp_DID> */
2385 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
2386 "0105 LOGO completes to NPort x%x "
2387 "Data: x%x x%x x%x x%x\n",
2388 ndlp->nlp_DID, irsp->ulpStatus, irsp->un.ulpWord[4],
2389 irsp->ulpTimeout, vport->num_disc_nodes);
2390 /* Check to see if link went down during discovery */
2391 if (lpfc_els_chk_latt(vport))
2392 goto out;
2393
2394 if (ndlp->nlp_flag & NLP_TARGET_REMOVE) {
2395 /* NLP_EVT_DEVICE_RM should unregister the RPI
2396 * which should abort all outstanding IOs.
2397 */
2398 lpfc_disc_state_machine(vport, ndlp, cmdiocb,
2399 NLP_EVT_DEVICE_RM);
2400 goto out;
2401 }
2402
2403 if (irsp->ulpStatus) {
2404 /* Check for retry */
2405 if (lpfc_els_retry(phba, cmdiocb, rspiocb))
2406 /* ELS command is being retried */
2407 goto out;
2408 /* LOGO failed */
2409 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
2410 "2756 LOGO failure DID:%06X Status:x%x/x%x\n",
2411 ndlp->nlp_DID, irsp->ulpStatus,
2412 irsp->un.ulpWord[4]);
2413 /* Do not call DSM for lpfc_els_abort'ed ELS cmds */
2414 if (lpfc_error_lost_link(irsp))
2415 goto out;
2416 else
2417 lpfc_disc_state_machine(vport, ndlp, cmdiocb,
2418 NLP_EVT_CMPL_LOGO);
2419 } else
2420 /* Good status, call state machine.
2421 * This will unregister the rpi if needed.
2422 */
2423 lpfc_disc_state_machine(vport, ndlp, cmdiocb,
2424 NLP_EVT_CMPL_LOGO);
2425 out:
2426 lpfc_els_free_iocb(phba, cmdiocb);
2427 /* If we are in pt2pt mode, we could rcv new S_ID on PLOGI */
2428 if ((vport->fc_flag & FC_PT2PT) &&
2429 !(vport->fc_flag & FC_PT2PT_PLOGI)) {
2430 phba->pport->fc_myDID = 0;
2431 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
2432 if (mbox) {
2433 lpfc_config_link(phba, mbox);
2434 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
2435 mbox->vport = vport;
2436 if (lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT) ==
2437 MBX_NOT_FINISHED) {
2438 mempool_free(mbox, phba->mbox_mem_pool);
2439 }
2440 }
2441 }
2442 return;
2443 }
2444
2445 /**
2446 * lpfc_issue_els_logo - Issue a logo to an node on a vport
2447 * @vport: pointer to a virtual N_Port data structure.
2448 * @ndlp: pointer to a node-list data structure.
2449 * @retry: number of retries to the command IOCB.
2450 *
2451 * This routine constructs and issues an ELS Logout (LOGO) iocb command
2452 * to a remote node, referred by an @ndlp on a @vport. It constructs the
2453 * payload of the IOCB, properly sets up the @ndlp state, and invokes the
2454 * lpfc_sli_issue_iocb() routine to send out the LOGO ELS command.
2455 *
2456 * Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp
2457 * will be incremented by 1 for holding the ndlp and the reference to ndlp
2458 * will be stored into the context1 field of the IOCB for the completion
2459 * callback function to the LOGO ELS command.
2460 *
2461 * Return code
2462 * 0 - successfully issued logo
2463 * 1 - failed to issue logo
2464 **/
2465 int
2466 lpfc_issue_els_logo(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2467 uint8_t retry)
2468 {
2469 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2470 struct lpfc_hba *phba = vport->phba;
2471 IOCB_t *icmd;
2472 struct lpfc_iocbq *elsiocb;
2473 uint8_t *pcmd;
2474 uint16_t cmdsize;
2475 int rc;
2476
2477 spin_lock_irq(shost->host_lock);
2478 if (ndlp->nlp_flag & NLP_LOGO_SND) {
2479 spin_unlock_irq(shost->host_lock);
2480 return 0;
2481 }
2482 spin_unlock_irq(shost->host_lock);
2483
2484 cmdsize = (2 * sizeof(uint32_t)) + sizeof(struct lpfc_name);
2485 elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp,
2486 ndlp->nlp_DID, ELS_CMD_LOGO);
2487 if (!elsiocb)
2488 return 1;
2489
2490 icmd = &elsiocb->iocb;
2491 pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
2492 *((uint32_t *) (pcmd)) = ELS_CMD_LOGO;
2493 pcmd += sizeof(uint32_t);
2494
2495 /* Fill in LOGO payload */
2496 *((uint32_t *) (pcmd)) = be32_to_cpu(vport->fc_myDID);
2497 pcmd += sizeof(uint32_t);
2498 memcpy(pcmd, &vport->fc_portname, sizeof(struct lpfc_name));
2499
2500 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
2501 "Issue LOGO: did:x%x",
2502 ndlp->nlp_DID, 0, 0);
2503
2504 phba->fc_stat.elsXmitLOGO++;
2505 elsiocb->iocb_cmpl = lpfc_cmpl_els_logo;
2506 spin_lock_irq(shost->host_lock);
2507 ndlp->nlp_flag |= NLP_LOGO_SND;
2508 spin_unlock_irq(shost->host_lock);
2509 rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
2510
2511 if (rc == IOCB_ERROR) {
2512 spin_lock_irq(shost->host_lock);
2513 ndlp->nlp_flag &= ~NLP_LOGO_SND;
2514 spin_unlock_irq(shost->host_lock);
2515 lpfc_els_free_iocb(phba, elsiocb);
2516 return 1;
2517 }
2518 return 0;
2519 }
2520
2521 /**
2522 * lpfc_cmpl_els_cmd - Completion callback function for generic els command
2523 * @phba: pointer to lpfc hba data structure.
2524 * @cmdiocb: pointer to lpfc command iocb data structure.
2525 * @rspiocb: pointer to lpfc response iocb data structure.
2526 *
2527 * This routine is a generic completion callback function for ELS commands.
2528 * Specifically, it is the callback function which does not need to perform
2529 * any command specific operations. It is currently used by the ELS command
2530 * issuing routines for the ELS State Change Request (SCR),
2531 * lpfc_issue_els_scr(), and the ELS Fibre Channel Address Resolution
2532 * Protocol Response (FARPR) routine, lpfc_issue_els_farpr(). Other than
2533 * certain debug loggings, this callback function simply invokes the
2534 * lpfc_els_chk_latt() routine to check whether link went down during the
2535 * discovery process.
2536 **/
2537 static void
2538 lpfc_cmpl_els_cmd(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
2539 struct lpfc_iocbq *rspiocb)
2540 {
2541 struct lpfc_vport *vport = cmdiocb->vport;
2542 IOCB_t *irsp;
2543
2544 irsp = &rspiocb->iocb;
2545
2546 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
2547 "ELS cmd cmpl: status:x%x/x%x did:x%x",
2548 irsp->ulpStatus, irsp->un.ulpWord[4],
2549 irsp->un.elsreq64.remoteID);
2550 /* ELS cmd tag <ulpIoTag> completes */
2551 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
2552 "0106 ELS cmd tag x%x completes Data: x%x x%x x%x\n",
2553 irsp->ulpIoTag, irsp->ulpStatus,
2554 irsp->un.ulpWord[4], irsp->ulpTimeout);
2555 /* Check to see if link went down during discovery */
2556 lpfc_els_chk_latt(vport);
2557 lpfc_els_free_iocb(phba, cmdiocb);
2558 return;
2559 }
2560
2561 /**
2562 * lpfc_issue_els_scr - Issue a scr to an node on a vport
2563 * @vport: pointer to a host virtual N_Port data structure.
2564 * @nportid: N_Port identifier to the remote node.
2565 * @retry: number of retries to the command IOCB.
2566 *
2567 * This routine issues a State Change Request (SCR) to a fabric node
2568 * on a @vport. The remote node @nportid is passed into the function. It
2569 * first search the @vport node list to find the matching ndlp. If no such
2570 * ndlp is found, a new ndlp shall be created for this (SCR) purpose. An
2571 * IOCB is allocated, payload prepared, and the lpfc_sli_issue_iocb()
2572 * routine is invoked to send the SCR IOCB.
2573 *
2574 * Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp
2575 * will be incremented by 1 for holding the ndlp and the reference to ndlp
2576 * will be stored into the context1 field of the IOCB for the completion
2577 * callback function to the SCR ELS command.
2578 *
2579 * Return code
2580 * 0 - Successfully issued scr command
2581 * 1 - Failed to issue scr command
2582 **/
2583 int
2584 lpfc_issue_els_scr(struct lpfc_vport *vport, uint32_t nportid, uint8_t retry)
2585 {
2586 struct lpfc_hba *phba = vport->phba;
2587 IOCB_t *icmd;
2588 struct lpfc_iocbq *elsiocb;
2589 struct lpfc_sli *psli;
2590 uint8_t *pcmd;
2591 uint16_t cmdsize;
2592 struct lpfc_nodelist *ndlp;
2593
2594 psli = &phba->sli;
2595 cmdsize = (sizeof(uint32_t) + sizeof(SCR));
2596
2597 ndlp = lpfc_findnode_did(vport, nportid);
2598 if (!ndlp) {
2599 ndlp = mempool_alloc(phba->nlp_mem_pool, GFP_KERNEL);
2600 if (!ndlp)
2601 return 1;
2602 lpfc_nlp_init(vport, ndlp, nportid);
2603 lpfc_enqueue_node(vport, ndlp);
2604 } else if (!NLP_CHK_NODE_ACT(ndlp)) {
2605 ndlp = lpfc_enable_node(vport, ndlp, NLP_STE_UNUSED_NODE);
2606 if (!ndlp)
2607 return 1;
2608 }
2609
2610 elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp,
2611 ndlp->nlp_DID, ELS_CMD_SCR);
2612
2613 if (!elsiocb) {
2614 /* This will trigger the release of the node just
2615 * allocated
2616 */
2617 lpfc_nlp_put(ndlp);
2618 return 1;
2619 }
2620
2621 icmd = &elsiocb->iocb;
2622 pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
2623
2624 *((uint32_t *) (pcmd)) = ELS_CMD_SCR;
2625 pcmd += sizeof(uint32_t);
2626
2627 /* For SCR, remainder of payload is SCR parameter page */
2628 memset(pcmd, 0, sizeof(SCR));
2629 ((SCR *) pcmd)->Function = SCR_FUNC_FULL;
2630
2631 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
2632 "Issue SCR: did:x%x",
2633 ndlp->nlp_DID, 0, 0);
2634
2635 phba->fc_stat.elsXmitSCR++;
2636 elsiocb->iocb_cmpl = lpfc_cmpl_els_cmd;
2637 if (lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0) ==
2638 IOCB_ERROR) {
2639 /* The additional lpfc_nlp_put will cause the following
2640 * lpfc_els_free_iocb routine to trigger the rlease of
2641 * the node.
2642 */
2643 lpfc_nlp_put(ndlp);
2644 lpfc_els_free_iocb(phba, elsiocb);
2645 return 1;
2646 }
2647 /* This will cause the callback-function lpfc_cmpl_els_cmd to
2648 * trigger the release of node.
2649 */
2650 lpfc_nlp_put(ndlp);
2651 return 0;
2652 }
2653
2654 /**
2655 * lpfc_issue_els_farpr - Issue a farp to an node on a vport
2656 * @vport: pointer to a host virtual N_Port data structure.
2657 * @nportid: N_Port identifier to the remote node.
2658 * @retry: number of retries to the command IOCB.
2659 *
2660 * This routine issues a Fibre Channel Address Resolution Response
2661 * (FARPR) to a node on a vport. The remote node N_Port identifier (@nportid)
2662 * is passed into the function. It first search the @vport node list to find
2663 * the matching ndlp. If no such ndlp is found, a new ndlp shall be created
2664 * for this (FARPR) purpose. An IOCB is allocated, payload prepared, and the
2665 * lpfc_sli_issue_iocb() routine is invoked to send the FARPR ELS command.
2666 *
2667 * Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp
2668 * will be incremented by 1 for holding the ndlp and the reference to ndlp
2669 * will be stored into the context1 field of the IOCB for the completion
2670 * callback function to the PARPR ELS command.
2671 *
2672 * Return code
2673 * 0 - Successfully issued farpr command
2674 * 1 - Failed to issue farpr command
2675 **/
2676 static int
2677 lpfc_issue_els_farpr(struct lpfc_vport *vport, uint32_t nportid, uint8_t retry)
2678 {
2679 struct lpfc_hba *phba = vport->phba;
2680 IOCB_t *icmd;
2681 struct lpfc_iocbq *elsiocb;
2682 struct lpfc_sli *psli;
2683 FARP *fp;
2684 uint8_t *pcmd;
2685 uint32_t *lp;
2686 uint16_t cmdsize;
2687 struct lpfc_nodelist *ondlp;
2688 struct lpfc_nodelist *ndlp;
2689
2690 psli = &phba->sli;
2691 cmdsize = (sizeof(uint32_t) + sizeof(FARP));
2692
2693 ndlp = lpfc_findnode_did(vport, nportid);
2694 if (!ndlp) {
2695 ndlp = mempool_alloc(phba->nlp_mem_pool, GFP_KERNEL);
2696 if (!ndlp)
2697 return 1;
2698 lpfc_nlp_init(vport, ndlp, nportid);
2699 lpfc_enqueue_node(vport, ndlp);
2700 } else if (!NLP_CHK_NODE_ACT(ndlp)) {
2701 ndlp = lpfc_enable_node(vport, ndlp, NLP_STE_UNUSED_NODE);
2702 if (!ndlp)
2703 return 1;
2704 }
2705
2706 elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp,
2707 ndlp->nlp_DID, ELS_CMD_RNID);
2708 if (!elsiocb) {
2709 /* This will trigger the release of the node just
2710 * allocated
2711 */
2712 lpfc_nlp_put(ndlp);
2713 return 1;
2714 }
2715
2716 icmd = &elsiocb->iocb;
2717 pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
2718
2719 *((uint32_t *) (pcmd)) = ELS_CMD_FARPR;
2720 pcmd += sizeof(uint32_t);
2721
2722 /* Fill in FARPR payload */
2723 fp = (FARP *) (pcmd);
2724 memset(fp, 0, sizeof(FARP));
2725 lp = (uint32_t *) pcmd;
2726 *lp++ = be32_to_cpu(nportid);
2727 *lp++ = be32_to_cpu(vport->fc_myDID);
2728 fp->Rflags = 0;
2729 fp->Mflags = (FARP_MATCH_PORT | FARP_MATCH_NODE);
2730
2731 memcpy(&fp->RportName, &vport->fc_portname, sizeof(struct lpfc_name));
2732 memcpy(&fp->RnodeName, &vport->fc_nodename, sizeof(struct lpfc_name));
2733 ondlp = lpfc_findnode_did(vport, nportid);
2734 if (ondlp && NLP_CHK_NODE_ACT(ondlp)) {
2735 memcpy(&fp->OportName, &ondlp->nlp_portname,
2736 sizeof(struct lpfc_name));
2737 memcpy(&fp->OnodeName, &ondlp->nlp_nodename,
2738 sizeof(struct lpfc_name));
2739 }
2740
2741 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
2742 "Issue FARPR: did:x%x",
2743 ndlp->nlp_DID, 0, 0);
2744
2745 phba->fc_stat.elsXmitFARPR++;
2746 elsiocb->iocb_cmpl = lpfc_cmpl_els_cmd;
2747 if (lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0) ==
2748 IOCB_ERROR) {
2749 /* The additional lpfc_nlp_put will cause the following
2750 * lpfc_els_free_iocb routine to trigger the release of
2751 * the node.
2752 */
2753 lpfc_nlp_put(ndlp);
2754 lpfc_els_free_iocb(phba, elsiocb);
2755 return 1;
2756 }
2757 /* This will cause the callback-function lpfc_cmpl_els_cmd to
2758 * trigger the release of the node.
2759 */
2760 lpfc_nlp_put(ndlp);
2761 return 0;
2762 }
2763
2764 /**
2765 * lpfc_cancel_retry_delay_tmo - Cancel the timer with delayed iocb-cmd retry
2766 * @vport: pointer to a host virtual N_Port data structure.
2767 * @nlp: pointer to a node-list data structure.
2768 *
2769 * This routine cancels the timer with a delayed IOCB-command retry for
2770 * a @vport's @ndlp. It stops the timer for the delayed function retrial and
2771 * removes the ELS retry event if it presents. In addition, if the
2772 * NLP_NPR_2B_DISC bit is set in the @nlp's nlp_flag bitmap, ADISC IOCB
2773 * commands are sent for the @vport's nodes that require issuing discovery
2774 * ADISC.
2775 **/
2776 void
2777 lpfc_cancel_retry_delay_tmo(struct lpfc_vport *vport, struct lpfc_nodelist *nlp)
2778 {
2779 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2780 struct lpfc_work_evt *evtp;
2781
2782 if (!(nlp->nlp_flag & NLP_DELAY_TMO))
2783 return;
2784 spin_lock_irq(shost->host_lock);
2785 nlp->nlp_flag &= ~NLP_DELAY_TMO;
2786 spin_unlock_irq(shost->host_lock);
2787 del_timer_sync(&nlp->nlp_delayfunc);
2788 nlp->nlp_last_elscmd = 0;
2789 if (!list_empty(&nlp->els_retry_evt.evt_listp)) {
2790 list_del_init(&nlp->els_retry_evt.evt_listp);
2791 /* Decrement nlp reference count held for the delayed retry */
2792 evtp = &nlp->els_retry_evt;
2793 lpfc_nlp_put((struct lpfc_nodelist *)evtp->evt_arg1);
2794 }
2795 if (nlp->nlp_flag & NLP_NPR_2B_DISC) {
2796 spin_lock_irq(shost->host_lock);
2797 nlp->nlp_flag &= ~NLP_NPR_2B_DISC;
2798 spin_unlock_irq(shost->host_lock);
2799 if (vport->num_disc_nodes) {
2800 if (vport->port_state < LPFC_VPORT_READY) {
2801 /* Check if there are more ADISCs to be sent */
2802 lpfc_more_adisc(vport);
2803 } else {
2804 /* Check if there are more PLOGIs to be sent */
2805 lpfc_more_plogi(vport);
2806 if (vport->num_disc_nodes == 0) {
2807 spin_lock_irq(shost->host_lock);
2808 vport->fc_flag &= ~FC_NDISC_ACTIVE;
2809 spin_unlock_irq(shost->host_lock);
2810 lpfc_can_disctmo(vport);
2811 lpfc_end_rscn(vport);
2812 }
2813 }
2814 }
2815 }
2816 return;
2817 }
2818
2819 /**
2820 * lpfc_els_retry_delay - Timer function with a ndlp delayed function timer
2821 * @ptr: holder for the pointer to the timer function associated data (ndlp).
2822 *
2823 * This routine is invoked by the ndlp delayed-function timer to check
2824 * whether there is any pending ELS retry event(s) with the node. If not, it
2825 * simply returns. Otherwise, if there is at least one ELS delayed event, it
2826 * adds the delayed events to the HBA work list and invokes the
2827 * lpfc_worker_wake_up() routine to wake up worker thread to process the
2828 * event. Note that lpfc_nlp_get() is called before posting the event to
2829 * the work list to hold reference count of ndlp so that it guarantees the
2830 * reference to ndlp will still be available when the worker thread gets
2831 * to the event associated with the ndlp.
2832 **/
2833 void
2834 lpfc_els_retry_delay(unsigned long ptr)
2835 {
2836 struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) ptr;
2837 struct lpfc_vport *vport = ndlp->vport;
2838 struct lpfc_hba *phba = vport->phba;
2839 unsigned long flags;
2840 struct lpfc_work_evt *evtp = &ndlp->els_retry_evt;
2841
2842 spin_lock_irqsave(&phba->hbalock, flags);
2843 if (!list_empty(&evtp->evt_listp)) {
2844 spin_unlock_irqrestore(&phba->hbalock, flags);
2845 return;
2846 }
2847
2848 /* We need to hold the node by incrementing the reference
2849 * count until the queued work is done
2850 */
2851 evtp->evt_arg1 = lpfc_nlp_get(ndlp);
2852 if (evtp->evt_arg1) {
2853 evtp->evt = LPFC_EVT_ELS_RETRY;
2854 list_add_tail(&evtp->evt_listp, &phba->work_list);
2855 lpfc_worker_wake_up(phba);
2856 }
2857 spin_unlock_irqrestore(&phba->hbalock, flags);
2858 return;
2859 }
2860
2861 /**
2862 * lpfc_els_retry_delay_handler - Work thread handler for ndlp delayed function
2863 * @ndlp: pointer to a node-list data structure.
2864 *
2865 * This routine is the worker-thread handler for processing the @ndlp delayed
2866 * event(s), posted by the lpfc_els_retry_delay() routine. It simply retrieves
2867 * the last ELS command from the associated ndlp and invokes the proper ELS
2868 * function according to the delayed ELS command to retry the command.
2869 **/
2870 void
2871 lpfc_els_retry_delay_handler(struct lpfc_nodelist *ndlp)
2872 {
2873 struct lpfc_vport *vport = ndlp->vport;
2874 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2875 uint32_t cmd, did, retry;
2876
2877 spin_lock_irq(shost->host_lock);
2878 did = ndlp->nlp_DID;
2879 cmd = ndlp->nlp_last_elscmd;
2880 ndlp->nlp_last_elscmd = 0;
2881
2882 if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) {
2883 spin_unlock_irq(shost->host_lock);
2884 return;
2885 }
2886
2887 ndlp->nlp_flag &= ~NLP_DELAY_TMO;
2888 spin_unlock_irq(shost->host_lock);
2889 /*
2890 * If a discovery event readded nlp_delayfunc after timer
2891 * firing and before processing the timer, cancel the
2892 * nlp_delayfunc.
2893 */
2894 del_timer_sync(&ndlp->nlp_delayfunc);
2895 retry = ndlp->nlp_retry;
2896 ndlp->nlp_retry = 0;
2897
2898 switch (cmd) {
2899 case ELS_CMD_FLOGI:
2900 lpfc_issue_els_flogi(vport, ndlp, retry);
2901 break;
2902 case ELS_CMD_PLOGI:
2903 if (!lpfc_issue_els_plogi(vport, ndlp->nlp_DID, retry)) {
2904 ndlp->nlp_prev_state = ndlp->nlp_state;
2905 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
2906 }
2907 break;
2908 case ELS_CMD_ADISC:
2909 if (!lpfc_issue_els_adisc(vport, ndlp, retry)) {
2910 ndlp->nlp_prev_state = ndlp->nlp_state;
2911 lpfc_nlp_set_state(vport, ndlp, NLP_STE_ADISC_ISSUE);
2912 }
2913 break;
2914 case ELS_CMD_PRLI:
2915 if (!lpfc_issue_els_prli(vport, ndlp, retry)) {
2916 ndlp->nlp_prev_state = ndlp->nlp_state;
2917 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PRLI_ISSUE);
2918 }
2919 break;
2920 case ELS_CMD_LOGO:
2921 if (!lpfc_issue_els_logo(vport, ndlp, retry)) {
2922 ndlp->nlp_prev_state = ndlp->nlp_state;
2923 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
2924 }
2925 break;
2926 case ELS_CMD_FDISC:
2927 if (!(vport->fc_flag & FC_VPORT_NEEDS_INIT_VPI))
2928 lpfc_issue_els_fdisc(vport, ndlp, retry);
2929 break;
2930 }
2931 return;
2932 }
2933
2934 /**
2935 * lpfc_els_retry - Make retry decision on an els command iocb
2936 * @phba: pointer to lpfc hba data structure.
2937 * @cmdiocb: pointer to lpfc command iocb data structure.
2938 * @rspiocb: pointer to lpfc response iocb data structure.
2939 *
2940 * This routine makes a retry decision on an ELS command IOCB, which has
2941 * failed. The following ELS IOCBs use this function for retrying the command
2942 * when previously issued command responsed with error status: FLOGI, PLOGI,
2943 * PRLI, ADISC, LOGO, and FDISC. Based on the ELS command type and the
2944 * returned error status, it makes the decision whether a retry shall be
2945 * issued for the command, and whether a retry shall be made immediately or
2946 * delayed. In the former case, the corresponding ELS command issuing-function
2947 * is called to retry the command. In the later case, the ELS command shall
2948 * be posted to the ndlp delayed event and delayed function timer set to the
2949 * ndlp for the delayed command issusing.
2950 *
2951 * Return code
2952 * 0 - No retry of els command is made
2953 * 1 - Immediate or delayed retry of els command is made
2954 **/
2955 static int
2956 lpfc_els_retry(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
2957 struct lpfc_iocbq *rspiocb)
2958 {
2959 struct lpfc_vport *vport = cmdiocb->vport;
2960 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2961 IOCB_t *irsp = &rspiocb->iocb;
2962 struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) cmdiocb->context1;
2963 struct lpfc_dmabuf *pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
2964 uint32_t *elscmd;
2965 struct ls_rjt stat;
2966 int retry = 0, maxretry = lpfc_max_els_tries, delay = 0;
2967 int logerr = 0;
2968 uint32_t cmd = 0;
2969 uint32_t did;
2970
2971
2972 /* Note: context2 may be 0 for internal driver abort
2973 * of delays ELS command.
2974 */
2975
2976 if (pcmd && pcmd->virt) {
2977 elscmd = (uint32_t *) (pcmd->virt);
2978 cmd = *elscmd++;
2979 }
2980
2981 if (ndlp && NLP_CHK_NODE_ACT(ndlp))
2982 did = ndlp->nlp_DID;
2983 else {
2984 /* We should only hit this case for retrying PLOGI */
2985 did = irsp->un.elsreq64.remoteID;
2986 ndlp = lpfc_findnode_did(vport, did);
2987 if ((!ndlp || !NLP_CHK_NODE_ACT(ndlp))
2988 && (cmd != ELS_CMD_PLOGI))
2989 return 1;
2990 }
2991
2992 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
2993 "Retry ELS: wd7:x%x wd4:x%x did:x%x",
2994 *(((uint32_t *) irsp) + 7), irsp->un.ulpWord[4], ndlp->nlp_DID);
2995
2996 switch (irsp->ulpStatus) {
2997 case IOSTAT_FCP_RSP_ERROR:
2998 break;
2999 case IOSTAT_REMOTE_STOP:
3000 if (phba->sli_rev == LPFC_SLI_REV4) {
3001 /* This IO was aborted by the target, we don't
3002 * know the rxid and because we did not send the
3003 * ABTS we cannot generate and RRQ.
3004 */
3005 lpfc_set_rrq_active(phba, ndlp,
3006 cmdiocb->sli4_lxritag, 0, 0);
3007 }
3008 break;
3009 case IOSTAT_LOCAL_REJECT:
3010 switch ((irsp->un.ulpWord[4] & 0xff)) {
3011 case IOERR_LOOP_OPEN_FAILURE:
3012 if (cmd == ELS_CMD_FLOGI) {
3013 if (PCI_DEVICE_ID_HORNET ==
3014 phba->pcidev->device) {
3015 phba->fc_topology = LPFC_TOPOLOGY_LOOP;
3016 phba->pport->fc_myDID = 0;
3017 phba->alpa_map[0] = 0;
3018 phba->alpa_map[1] = 0;
3019 }
3020 }
3021 if (cmd == ELS_CMD_PLOGI && cmdiocb->retry == 0)
3022 delay = 1000;
3023 retry = 1;
3024 break;
3025
3026 case IOERR_ILLEGAL_COMMAND:
3027 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
3028 "0124 Retry illegal cmd x%x "
3029 "retry:x%x delay:x%x\n",
3030 cmd, cmdiocb->retry, delay);
3031 retry = 1;
3032 /* All command's retry policy */
3033 maxretry = 8;
3034 if (cmdiocb->retry > 2)
3035 delay = 1000;
3036 break;
3037
3038 case IOERR_NO_RESOURCES:
3039 logerr = 1; /* HBA out of resources */
3040 retry = 1;
3041 if (cmdiocb->retry > 100)
3042 delay = 100;
3043 maxretry = 250;
3044 break;
3045
3046 case IOERR_ILLEGAL_FRAME:
3047 delay = 100;
3048 retry = 1;
3049 break;
3050
3051 case IOERR_SEQUENCE_TIMEOUT:
3052 case IOERR_INVALID_RPI:
3053 retry = 1;
3054 break;
3055 }
3056 break;
3057
3058 case IOSTAT_NPORT_RJT:
3059 case IOSTAT_FABRIC_RJT:
3060 if (irsp->un.ulpWord[4] & RJT_UNAVAIL_TEMP) {
3061 retry = 1;
3062 break;
3063 }
3064 break;
3065
3066 case IOSTAT_NPORT_BSY:
3067 case IOSTAT_FABRIC_BSY:
3068 logerr = 1; /* Fabric / Remote NPort out of resources */
3069 retry = 1;
3070 break;
3071
3072 case IOSTAT_LS_RJT:
3073 stat.un.lsRjtError = be32_to_cpu(irsp->un.ulpWord[4]);
3074 /* Added for Vendor specifc support
3075 * Just keep retrying for these Rsn / Exp codes
3076 */
3077 switch (stat.un.b.lsRjtRsnCode) {
3078 case LSRJT_UNABLE_TPC:
3079 if (stat.un.b.lsRjtRsnCodeExp ==
3080 LSEXP_CMD_IN_PROGRESS) {
3081 if (cmd == ELS_CMD_PLOGI) {
3082 delay = 1000;
3083 maxretry = 48;
3084 }
3085 retry = 1;
3086 break;
3087 }
3088 if (stat.un.b.lsRjtRsnCodeExp ==
3089 LSEXP_CANT_GIVE_DATA) {
3090 if (cmd == ELS_CMD_PLOGI) {
3091 delay = 1000;
3092 maxretry = 48;
3093 }
3094 retry = 1;
3095 break;
3096 }
3097 if (cmd == ELS_CMD_PLOGI) {
3098 delay = 1000;
3099 maxretry = lpfc_max_els_tries + 1;
3100 retry = 1;
3101 break;
3102 }
3103 if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
3104 (cmd == ELS_CMD_FDISC) &&
3105 (stat.un.b.lsRjtRsnCodeExp == LSEXP_OUT_OF_RESOURCE)){
3106 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
3107 "0125 FDISC Failed (x%x). "
3108 "Fabric out of resources\n",
3109 stat.un.lsRjtError);
3110 lpfc_vport_set_state(vport,
3111 FC_VPORT_NO_FABRIC_RSCS);
3112 }
3113 break;
3114
3115 case LSRJT_LOGICAL_BSY:
3116 if ((cmd == ELS_CMD_PLOGI) ||
3117 (cmd == ELS_CMD_PRLI)) {
3118 delay = 1000;
3119 maxretry = 48;
3120 } else if (cmd == ELS_CMD_FDISC) {
3121 /* FDISC retry policy */
3122 maxretry = 48;
3123 if (cmdiocb->retry >= 32)
3124 delay = 1000;
3125 }
3126 retry = 1;
3127 break;
3128
3129 case LSRJT_LOGICAL_ERR:
3130 /* There are some cases where switches return this
3131 * error when they are not ready and should be returning
3132 * Logical Busy. We should delay every time.
3133 */
3134 if (cmd == ELS_CMD_FDISC &&
3135 stat.un.b.lsRjtRsnCodeExp == LSEXP_PORT_LOGIN_REQ) {
3136 maxretry = 3;
3137 delay = 1000;
3138 retry = 1;
3139 break;
3140 }
3141 case LSRJT_PROTOCOL_ERR:
3142 if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
3143 (cmd == ELS_CMD_FDISC) &&
3144 ((stat.un.b.lsRjtRsnCodeExp == LSEXP_INVALID_PNAME) ||
3145 (stat.un.b.lsRjtRsnCodeExp == LSEXP_INVALID_NPORT_ID))
3146 ) {
3147 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
3148 "0122 FDISC Failed (x%x). "
3149 "Fabric Detected Bad WWN\n",
3150 stat.un.lsRjtError);
3151 lpfc_vport_set_state(vport,
3152 FC_VPORT_FABRIC_REJ_WWN);
3153 }
3154 break;
3155 }
3156 break;
3157
3158 case IOSTAT_INTERMED_RSP:
3159 case IOSTAT_BA_RJT:
3160 break;
3161
3162 default:
3163 break;
3164 }
3165
3166 if (did == FDMI_DID)
3167 retry = 1;
3168
3169 if ((cmd == ELS_CMD_FLOGI) &&
3170 (phba->fc_topology != LPFC_TOPOLOGY_LOOP) &&
3171 !lpfc_error_lost_link(irsp)) {
3172 /* FLOGI retry policy */
3173 retry = 1;
3174 /* retry FLOGI forever */
3175 maxretry = 0;
3176 if (cmdiocb->retry >= 100)
3177 delay = 5000;
3178 else if (cmdiocb->retry >= 32)
3179 delay = 1000;
3180 } else if ((cmd == ELS_CMD_FDISC) && !lpfc_error_lost_link(irsp)) {
3181 /* retry FDISCs every second up to devloss */
3182 retry = 1;
3183 maxretry = vport->cfg_devloss_tmo;
3184 delay = 1000;
3185 }
3186
3187 cmdiocb->retry++;
3188 if (maxretry && (cmdiocb->retry >= maxretry)) {
3189 phba->fc_stat.elsRetryExceeded++;
3190 retry = 0;
3191 }
3192
3193 if ((vport->load_flag & FC_UNLOADING) != 0)
3194 retry = 0;
3195
3196 if (retry) {
3197 if ((cmd == ELS_CMD_PLOGI) || (cmd == ELS_CMD_FDISC)) {
3198 /* Stop retrying PLOGI and FDISC if in FCF discovery */
3199 if (phba->fcf.fcf_flag & FCF_DISCOVERY) {
3200 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
3201 "2849 Stop retry ELS command "
3202 "x%x to remote NPORT x%x, "
3203 "Data: x%x x%x\n", cmd, did,
3204 cmdiocb->retry, delay);
3205 return 0;
3206 }
3207 }
3208
3209 /* Retry ELS command <elsCmd> to remote NPORT <did> */
3210 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
3211 "0107 Retry ELS command x%x to remote "
3212 "NPORT x%x Data: x%x x%x\n",
3213 cmd, did, cmdiocb->retry, delay);
3214
3215 if (((cmd == ELS_CMD_PLOGI) || (cmd == ELS_CMD_ADISC)) &&
3216 ((irsp->ulpStatus != IOSTAT_LOCAL_REJECT) ||
3217 ((irsp->un.ulpWord[4] & 0xff) != IOERR_NO_RESOURCES))) {
3218 /* Don't reset timer for no resources */
3219
3220 /* If discovery / RSCN timer is running, reset it */
3221 if (timer_pending(&vport->fc_disctmo) ||
3222 (vport->fc_flag & FC_RSCN_MODE))
3223 lpfc_set_disctmo(vport);
3224 }
3225
3226 phba->fc_stat.elsXmitRetry++;
3227 if (ndlp && NLP_CHK_NODE_ACT(ndlp) && delay) {
3228 phba->fc_stat.elsDelayRetry++;
3229 ndlp->nlp_retry = cmdiocb->retry;
3230
3231 /* delay is specified in milliseconds */
3232 mod_timer(&ndlp->nlp_delayfunc,
3233 jiffies + msecs_to_jiffies(delay));
3234 spin_lock_irq(shost->host_lock);
3235 ndlp->nlp_flag |= NLP_DELAY_TMO;
3236 spin_unlock_irq(shost->host_lock);
3237
3238 ndlp->nlp_prev_state = ndlp->nlp_state;
3239 if (cmd == ELS_CMD_PRLI)
3240 lpfc_nlp_set_state(vport, ndlp,
3241 NLP_STE_REG_LOGIN_ISSUE);
3242 else
3243 lpfc_nlp_set_state(vport, ndlp,
3244 NLP_STE_NPR_NODE);
3245 ndlp->nlp_last_elscmd = cmd;
3246
3247 return 1;
3248 }
3249 switch (cmd) {
3250 case ELS_CMD_FLOGI:
3251 lpfc_issue_els_flogi(vport, ndlp, cmdiocb->retry);
3252 return 1;
3253 case ELS_CMD_FDISC:
3254 lpfc_issue_els_fdisc(vport, ndlp, cmdiocb->retry);
3255 return 1;
3256 case ELS_CMD_PLOGI:
3257 if (ndlp && NLP_CHK_NODE_ACT(ndlp)) {
3258 ndlp->nlp_prev_state = ndlp->nlp_state;
3259 lpfc_nlp_set_state(vport, ndlp,
3260 NLP_STE_PLOGI_ISSUE);
3261 }
3262 lpfc_issue_els_plogi(vport, did, cmdiocb->retry);
3263 return 1;
3264 case ELS_CMD_ADISC:
3265 ndlp->nlp_prev_state = ndlp->nlp_state;
3266 lpfc_nlp_set_state(vport, ndlp, NLP_STE_ADISC_ISSUE);
3267 lpfc_issue_els_adisc(vport, ndlp, cmdiocb->retry);
3268 return 1;
3269 case ELS_CMD_PRLI:
3270 ndlp->nlp_prev_state = ndlp->nlp_state;
3271 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PRLI_ISSUE);
3272 lpfc_issue_els_prli(vport, ndlp, cmdiocb->retry);
3273 return 1;
3274 case ELS_CMD_LOGO:
3275 ndlp->nlp_prev_state = ndlp->nlp_state;
3276 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
3277 lpfc_issue_els_logo(vport, ndlp, cmdiocb->retry);
3278 return 1;
3279 }
3280 }
3281 /* No retry ELS command <elsCmd> to remote NPORT <did> */
3282 if (logerr) {
3283 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
3284 "0137 No retry ELS command x%x to remote "
3285 "NPORT x%x: Out of Resources: Error:x%x/%x\n",
3286 cmd, did, irsp->ulpStatus,
3287 irsp->un.ulpWord[4]);
3288 }
3289 else {
3290 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
3291 "0108 No retry ELS command x%x to remote "
3292 "NPORT x%x Retried:%d Error:x%x/%x\n",
3293 cmd, did, cmdiocb->retry, irsp->ulpStatus,
3294 irsp->un.ulpWord[4]);
3295 }
3296 return 0;
3297 }
3298
3299 /**
3300 * lpfc_els_free_data - Free lpfc dma buffer and data structure with an iocb
3301 * @phba: pointer to lpfc hba data structure.
3302 * @buf_ptr1: pointer to the lpfc DMA buffer data structure.
3303 *
3304 * This routine releases the lpfc DMA (Direct Memory Access) buffer(s)
3305 * associated with a command IOCB back to the lpfc DMA buffer pool. It first
3306 * checks to see whether there is a lpfc DMA buffer associated with the
3307 * response of the command IOCB. If so, it will be released before releasing
3308 * the lpfc DMA buffer associated with the IOCB itself.
3309 *
3310 * Return code
3311 * 0 - Successfully released lpfc DMA buffer (currently, always return 0)
3312 **/
3313 static int
3314 lpfc_els_free_data(struct lpfc_hba *phba, struct lpfc_dmabuf *buf_ptr1)
3315 {
3316 struct lpfc_dmabuf *buf_ptr;
3317
3318 /* Free the response before processing the command. */
3319 if (!list_empty(&buf_ptr1->list)) {
3320 list_remove_head(&buf_ptr1->list, buf_ptr,
3321 struct lpfc_dmabuf,
3322 list);
3323 lpfc_mbuf_free(phba, buf_ptr->virt, buf_ptr->phys);
3324 kfree(buf_ptr);
3325 }
3326 lpfc_mbuf_free(phba, buf_ptr1->virt, buf_ptr1->phys);
3327 kfree(buf_ptr1);
3328 return 0;
3329 }
3330
3331 /**
3332 * lpfc_els_free_bpl - Free lpfc dma buffer and data structure with bpl
3333 * @phba: pointer to lpfc hba data structure.
3334 * @buf_ptr: pointer to the lpfc dma buffer data structure.
3335 *
3336 * This routine releases the lpfc Direct Memory Access (DMA) buffer
3337 * associated with a Buffer Pointer List (BPL) back to the lpfc DMA buffer
3338 * pool.
3339 *
3340 * Return code
3341 * 0 - Successfully released lpfc DMA buffer (currently, always return 0)
3342 **/
3343 static int
3344 lpfc_els_free_bpl(struct lpfc_hba *phba, struct lpfc_dmabuf *buf_ptr)
3345 {
3346 lpfc_mbuf_free(phba, buf_ptr->virt, buf_ptr->phys);
3347 kfree(buf_ptr);
3348 return 0;
3349 }
3350
3351 /**
3352 * lpfc_els_free_iocb - Free a command iocb and its associated resources
3353 * @phba: pointer to lpfc hba data structure.
3354 * @elsiocb: pointer to lpfc els command iocb data structure.
3355 *
3356 * This routine frees a command IOCB and its associated resources. The
3357 * command IOCB data structure contains the reference to various associated
3358 * resources, these fields must be set to NULL if the associated reference
3359 * not present:
3360 * context1 - reference to ndlp
3361 * context2 - reference to cmd
3362 * context2->next - reference to rsp
3363 * context3 - reference to bpl
3364 *
3365 * It first properly decrements the reference count held on ndlp for the
3366 * IOCB completion callback function. If LPFC_DELAY_MEM_FREE flag is not
3367 * set, it invokes the lpfc_els_free_data() routine to release the Direct
3368 * Memory Access (DMA) buffers associated with the IOCB. Otherwise, it
3369 * adds the DMA buffer the @phba data structure for the delayed release.
3370 * If reference to the Buffer Pointer List (BPL) is present, the
3371 * lpfc_els_free_bpl() routine is invoked to release the DMA memory
3372 * associated with BPL. Finally, the lpfc_sli_release_iocbq() routine is
3373 * invoked to release the IOCB data structure back to @phba IOCBQ list.
3374 *
3375 * Return code
3376 * 0 - Success (currently, always return 0)
3377 **/
3378 int
3379 lpfc_els_free_iocb(struct lpfc_hba *phba, struct lpfc_iocbq *elsiocb)
3380 {
3381 struct lpfc_dmabuf *buf_ptr, *buf_ptr1;
3382 struct lpfc_nodelist *ndlp;
3383
3384 ndlp = (struct lpfc_nodelist *)elsiocb->context1;
3385 if (ndlp) {
3386 if (ndlp->nlp_flag & NLP_DEFER_RM) {
3387 lpfc_nlp_put(ndlp);
3388
3389 /* If the ndlp is not being used by another discovery
3390 * thread, free it.
3391 */
3392 if (!lpfc_nlp_not_used(ndlp)) {
3393 /* If ndlp is being used by another discovery
3394 * thread, just clear NLP_DEFER_RM
3395 */
3396 ndlp->nlp_flag &= ~NLP_DEFER_RM;
3397 }
3398 }
3399 else
3400 lpfc_nlp_put(ndlp);
3401 elsiocb->context1 = NULL;
3402 }
3403 /* context2 = cmd, context2->next = rsp, context3 = bpl */
3404 if (elsiocb->context2) {
3405 if (elsiocb->iocb_flag & LPFC_DELAY_MEM_FREE) {
3406 /* Firmware could still be in progress of DMAing
3407 * payload, so don't free data buffer till after
3408 * a hbeat.
3409 */
3410 elsiocb->iocb_flag &= ~LPFC_DELAY_MEM_FREE;
3411 buf_ptr = elsiocb->context2;
3412 elsiocb->context2 = NULL;
3413 if (buf_ptr) {
3414 buf_ptr1 = NULL;
3415 spin_lock_irq(&phba->hbalock);
3416 if (!list_empty(&buf_ptr->list)) {
3417 list_remove_head(&buf_ptr->list,
3418 buf_ptr1, struct lpfc_dmabuf,
3419 list);
3420 INIT_LIST_HEAD(&buf_ptr1->list);
3421 list_add_tail(&buf_ptr1->list,
3422 &phba->elsbuf);
3423 phba->elsbuf_cnt++;
3424 }
3425 INIT_LIST_HEAD(&buf_ptr->list);
3426 list_add_tail(&buf_ptr->list, &phba->elsbuf);
3427 phba->elsbuf_cnt++;
3428 spin_unlock_irq(&phba->hbalock);
3429 }
3430 } else {
3431 buf_ptr1 = (struct lpfc_dmabuf *) elsiocb->context2;
3432 lpfc_els_free_data(phba, buf_ptr1);
3433 }
3434 }
3435
3436 if (elsiocb->context3) {
3437 buf_ptr = (struct lpfc_dmabuf *) elsiocb->context3;
3438 lpfc_els_free_bpl(phba, buf_ptr);
3439 }
3440 lpfc_sli_release_iocbq(phba, elsiocb);
3441 return 0;
3442 }
3443
3444 /**
3445 * lpfc_cmpl_els_logo_acc - Completion callback function to logo acc response
3446 * @phba: pointer to lpfc hba data structure.
3447 * @cmdiocb: pointer to lpfc command iocb data structure.
3448 * @rspiocb: pointer to lpfc response iocb data structure.
3449 *
3450 * This routine is the completion callback function to the Logout (LOGO)
3451 * Accept (ACC) Response ELS command. This routine is invoked to indicate
3452 * the completion of the LOGO process. It invokes the lpfc_nlp_not_used() to
3453 * release the ndlp if it has the last reference remaining (reference count
3454 * is 1). If succeeded (meaning ndlp released), it sets the IOCB context1
3455 * field to NULL to inform the following lpfc_els_free_iocb() routine no
3456 * ndlp reference count needs to be decremented. Otherwise, the ndlp
3457 * reference use-count shall be decremented by the lpfc_els_free_iocb()
3458 * routine. Finally, the lpfc_els_free_iocb() is invoked to release the
3459 * IOCB data structure.
3460 **/
3461 static void
3462 lpfc_cmpl_els_logo_acc(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
3463 struct lpfc_iocbq *rspiocb)
3464 {
3465 struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) cmdiocb->context1;
3466 struct lpfc_vport *vport = cmdiocb->vport;
3467 IOCB_t *irsp;
3468
3469 irsp = &rspiocb->iocb;
3470 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP,
3471 "ACC LOGO cmpl: status:x%x/x%x did:x%x",
3472 irsp->ulpStatus, irsp->un.ulpWord[4], ndlp->nlp_DID);
3473 /* ACC to LOGO completes to NPort <nlp_DID> */
3474 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
3475 "0109 ACC to LOGO completes to NPort x%x "
3476 "Data: x%x x%x x%x\n",
3477 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
3478 ndlp->nlp_rpi);
3479
3480 if (ndlp->nlp_state == NLP_STE_NPR_NODE) {
3481 /* NPort Recovery mode or node is just allocated */
3482 if (!lpfc_nlp_not_used(ndlp)) {
3483 /* If the ndlp is being used by another discovery
3484 * thread, just unregister the RPI.
3485 */
3486 lpfc_unreg_rpi(vport, ndlp);
3487 } else {
3488 /* Indicate the node has already released, should
3489 * not reference to it from within lpfc_els_free_iocb.
3490 */
3491 cmdiocb->context1 = NULL;
3492 }
3493 }
3494
3495 /*
3496 * The driver received a LOGO from the rport and has ACK'd it.
3497 * At this point, the driver is done so release the IOCB
3498 */
3499 lpfc_els_free_iocb(phba, cmdiocb);
3500
3501 /*
3502 * Remove the ndlp reference if it's a fabric node that has
3503 * sent us an unsolicted LOGO.
3504 */
3505 if (ndlp->nlp_type & NLP_FABRIC)
3506 lpfc_nlp_put(ndlp);
3507
3508 return;
3509 }
3510
3511 /**
3512 * lpfc_mbx_cmpl_dflt_rpi - Completion callbk func for unreg dflt rpi mbox cmd
3513 * @phba: pointer to lpfc hba data structure.
3514 * @pmb: pointer to the driver internal queue element for mailbox command.
3515 *
3516 * This routine is the completion callback function for unregister default
3517 * RPI (Remote Port Index) mailbox command to the @phba. It simply releases
3518 * the associated lpfc Direct Memory Access (DMA) buffer back to the pool and
3519 * decrements the ndlp reference count held for this completion callback
3520 * function. After that, it invokes the lpfc_nlp_not_used() to check
3521 * whether there is only one reference left on the ndlp. If so, it will
3522 * perform one more decrement and trigger the release of the ndlp.
3523 **/
3524 void
3525 lpfc_mbx_cmpl_dflt_rpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
3526 {
3527 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
3528 struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) pmb->context2;
3529
3530 pmb->context1 = NULL;
3531 pmb->context2 = NULL;
3532
3533 lpfc_mbuf_free(phba, mp->virt, mp->phys);
3534 kfree(mp);
3535 mempool_free(pmb, phba->mbox_mem_pool);
3536 if (ndlp && NLP_CHK_NODE_ACT(ndlp)) {
3537 lpfc_nlp_put(ndlp);
3538 /* This is the end of the default RPI cleanup logic for this
3539 * ndlp. If no other discovery threads are using this ndlp.
3540 * we should free all resources associated with it.
3541 */
3542 lpfc_nlp_not_used(ndlp);
3543 }
3544
3545 return;
3546 }
3547
3548 /**
3549 * lpfc_cmpl_els_rsp - Completion callback function for els response iocb cmd
3550 * @phba: pointer to lpfc hba data structure.
3551 * @cmdiocb: pointer to lpfc command iocb data structure.
3552 * @rspiocb: pointer to lpfc response iocb data structure.
3553 *
3554 * This routine is the completion callback function for ELS Response IOCB
3555 * command. In normal case, this callback function just properly sets the
3556 * nlp_flag bitmap in the ndlp data structure, if the mbox command reference
3557 * field in the command IOCB is not NULL, the referred mailbox command will
3558 * be send out, and then invokes the lpfc_els_free_iocb() routine to release
3559 * the IOCB. Under error conditions, such as when a LS_RJT is returned or a
3560 * link down event occurred during the discovery, the lpfc_nlp_not_used()
3561 * routine shall be invoked trying to release the ndlp if no other threads
3562 * are currently referring it.
3563 **/
3564 static void
3565 lpfc_cmpl_els_rsp(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
3566 struct lpfc_iocbq *rspiocb)
3567 {
3568 struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) cmdiocb->context1;
3569 struct lpfc_vport *vport = ndlp ? ndlp->vport : NULL;
3570 struct Scsi_Host *shost = vport ? lpfc_shost_from_vport(vport) : NULL;
3571 IOCB_t *irsp;
3572 uint8_t *pcmd;
3573 LPFC_MBOXQ_t *mbox = NULL;
3574 struct lpfc_dmabuf *mp = NULL;
3575 uint32_t ls_rjt = 0;
3576
3577 irsp = &rspiocb->iocb;
3578
3579 if (cmdiocb->context_un.mbox)
3580 mbox = cmdiocb->context_un.mbox;
3581
3582 /* First determine if this is a LS_RJT cmpl. Note, this callback
3583 * function can have cmdiocb->contest1 (ndlp) field set to NULL.
3584 */
3585 pcmd = (uint8_t *) (((struct lpfc_dmabuf *) cmdiocb->context2)->virt);
3586 if (ndlp && NLP_CHK_NODE_ACT(ndlp) &&
3587 (*((uint32_t *) (pcmd)) == ELS_CMD_LS_RJT)) {
3588 /* A LS_RJT associated with Default RPI cleanup has its own
3589 * separate code path.
3590 */
3591 if (!(ndlp->nlp_flag & NLP_RM_DFLT_RPI))
3592 ls_rjt = 1;
3593 }
3594
3595 /* Check to see if link went down during discovery */
3596 if (!ndlp || !NLP_CHK_NODE_ACT(ndlp) || lpfc_els_chk_latt(vport)) {
3597 if (mbox) {
3598 mp = (struct lpfc_dmabuf *) mbox->context1;
3599 if (mp) {
3600 lpfc_mbuf_free(phba, mp->virt, mp->phys);
3601 kfree(mp);
3602 }
3603 mempool_free(mbox, phba->mbox_mem_pool);
3604 }
3605 if (ndlp && NLP_CHK_NODE_ACT(ndlp) &&
3606 (ndlp->nlp_flag & NLP_RM_DFLT_RPI))
3607 if (lpfc_nlp_not_used(ndlp)) {
3608 ndlp = NULL;
3609 /* Indicate the node has already released,
3610 * should not reference to it from within
3611 * the routine lpfc_els_free_iocb.
3612 */
3613 cmdiocb->context1 = NULL;
3614 }
3615 goto out;
3616 }
3617
3618 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP,
3619 "ELS rsp cmpl: status:x%x/x%x did:x%x",
3620 irsp->ulpStatus, irsp->un.ulpWord[4],
3621 cmdiocb->iocb.un.elsreq64.remoteID);
3622 /* ELS response tag <ulpIoTag> completes */
3623 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
3624 "0110 ELS response tag x%x completes "
3625 "Data: x%x x%x x%x x%x x%x x%x x%x\n",
3626 cmdiocb->iocb.ulpIoTag, rspiocb->iocb.ulpStatus,
3627 rspiocb->iocb.un.ulpWord[4], rspiocb->iocb.ulpTimeout,
3628 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
3629 ndlp->nlp_rpi);
3630 if (mbox) {
3631 if ((rspiocb->iocb.ulpStatus == 0)
3632 && (ndlp->nlp_flag & NLP_ACC_REGLOGIN)) {
3633 lpfc_unreg_rpi(vport, ndlp);
3634 /* Increment reference count to ndlp to hold the
3635 * reference to ndlp for the callback function.
3636 */
3637 mbox->context2 = lpfc_nlp_get(ndlp);
3638 mbox->vport = vport;
3639 if (ndlp->nlp_flag & NLP_RM_DFLT_RPI) {
3640 mbox->mbox_flag |= LPFC_MBX_IMED_UNREG;
3641 mbox->mbox_cmpl = lpfc_mbx_cmpl_dflt_rpi;
3642 }
3643 else {
3644 mbox->mbox_cmpl = lpfc_mbx_cmpl_reg_login;
3645 ndlp->nlp_prev_state = ndlp->nlp_state;
3646 lpfc_nlp_set_state(vport, ndlp,
3647 NLP_STE_REG_LOGIN_ISSUE);
3648 }
3649 if (lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT)
3650 != MBX_NOT_FINISHED)
3651 goto out;
3652 else
3653 /* Decrement the ndlp reference count we
3654 * set for this failed mailbox command.
3655 */
3656 lpfc_nlp_put(ndlp);
3657
3658 /* ELS rsp: Cannot issue reg_login for <NPortid> */
3659 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
3660 "0138 ELS rsp: Cannot issue reg_login for x%x "
3661 "Data: x%x x%x x%x\n",
3662 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
3663 ndlp->nlp_rpi);
3664
3665 if (lpfc_nlp_not_used(ndlp)) {
3666 ndlp = NULL;
3667 /* Indicate node has already been released,
3668 * should not reference to it from within
3669 * the routine lpfc_els_free_iocb.
3670 */
3671 cmdiocb->context1 = NULL;
3672 }
3673 } else {
3674 /* Do not drop node for lpfc_els_abort'ed ELS cmds */
3675 if (!lpfc_error_lost_link(irsp) &&
3676 ndlp->nlp_flag & NLP_ACC_REGLOGIN) {
3677 if (lpfc_nlp_not_used(ndlp)) {
3678 ndlp = NULL;
3679 /* Indicate node has already been
3680 * released, should not reference
3681 * to it from within the routine
3682 * lpfc_els_free_iocb.
3683 */
3684 cmdiocb->context1 = NULL;
3685 }
3686 }
3687 }
3688 mp = (struct lpfc_dmabuf *) mbox->context1;
3689 if (mp) {
3690 lpfc_mbuf_free(phba, mp->virt, mp->phys);
3691 kfree(mp);
3692 }
3693 mempool_free(mbox, phba->mbox_mem_pool);
3694 }
3695 out:
3696 if (ndlp && NLP_CHK_NODE_ACT(ndlp)) {
3697 spin_lock_irq(shost->host_lock);
3698 ndlp->nlp_flag &= ~(NLP_ACC_REGLOGIN | NLP_RM_DFLT_RPI);
3699 spin_unlock_irq(shost->host_lock);
3700
3701 /* If the node is not being used by another discovery thread,
3702 * and we are sending a reject, we are done with it.
3703 * Release driver reference count here and free associated
3704 * resources.
3705 */
3706 if (ls_rjt)
3707 if (lpfc_nlp_not_used(ndlp))
3708 /* Indicate node has already been released,
3709 * should not reference to it from within
3710 * the routine lpfc_els_free_iocb.
3711 */
3712 cmdiocb->context1 = NULL;
3713 }
3714
3715 lpfc_els_free_iocb(phba, cmdiocb);
3716 return;
3717 }
3718
3719 /**
3720 * lpfc_els_rsp_acc - Prepare and issue an acc response iocb command
3721 * @vport: pointer to a host virtual N_Port data structure.
3722 * @flag: the els command code to be accepted.
3723 * @oldiocb: pointer to the original lpfc command iocb data structure.
3724 * @ndlp: pointer to a node-list data structure.
3725 * @mbox: pointer to the driver internal queue element for mailbox command.
3726 *
3727 * This routine prepares and issues an Accept (ACC) response IOCB
3728 * command. It uses the @flag to properly set up the IOCB field for the
3729 * specific ACC response command to be issued and invokes the
3730 * lpfc_sli_issue_iocb() routine to send out ACC response IOCB. If a
3731 * @mbox pointer is passed in, it will be put into the context_un.mbox
3732 * field of the IOCB for the completion callback function to issue the
3733 * mailbox command to the HBA later when callback is invoked.
3734 *
3735 * Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp
3736 * will be incremented by 1 for holding the ndlp and the reference to ndlp
3737 * will be stored into the context1 field of the IOCB for the completion
3738 * callback function to the corresponding response ELS IOCB command.
3739 *
3740 * Return code
3741 * 0 - Successfully issued acc response
3742 * 1 - Failed to issue acc response
3743 **/
3744 int
3745 lpfc_els_rsp_acc(struct lpfc_vport *vport, uint32_t flag,
3746 struct lpfc_iocbq *oldiocb, struct lpfc_nodelist *ndlp,
3747 LPFC_MBOXQ_t *mbox)
3748 {
3749 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3750 struct lpfc_hba *phba = vport->phba;
3751 IOCB_t *icmd;
3752 IOCB_t *oldcmd;
3753 struct lpfc_iocbq *elsiocb;
3754 struct lpfc_sli *psli;
3755 uint8_t *pcmd;
3756 uint16_t cmdsize;
3757 int rc;
3758 ELS_PKT *els_pkt_ptr;
3759
3760 psli = &phba->sli;
3761 oldcmd = &oldiocb->iocb;
3762
3763 switch (flag) {
3764 case ELS_CMD_ACC:
3765 cmdsize = sizeof(uint32_t);
3766 elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry,
3767 ndlp, ndlp->nlp_DID, ELS_CMD_ACC);
3768 if (!elsiocb) {
3769 spin_lock_irq(shost->host_lock);
3770 ndlp->nlp_flag &= ~NLP_LOGO_ACC;
3771 spin_unlock_irq(shost->host_lock);
3772 return 1;
3773 }
3774
3775 icmd = &elsiocb->iocb;
3776 icmd->ulpContext = oldcmd->ulpContext; /* Xri / rx_id */
3777 icmd->unsli3.rcvsli3.ox_id = oldcmd->unsli3.rcvsli3.ox_id;
3778 pcmd = (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
3779 *((uint32_t *) (pcmd)) = ELS_CMD_ACC;
3780 pcmd += sizeof(uint32_t);
3781
3782 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP,
3783 "Issue ACC: did:x%x flg:x%x",
3784 ndlp->nlp_DID, ndlp->nlp_flag, 0);
3785 break;
3786 case ELS_CMD_PLOGI:
3787 cmdsize = (sizeof(struct serv_parm) + sizeof(uint32_t));
3788 elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry,
3789 ndlp, ndlp->nlp_DID, ELS_CMD_ACC);
3790 if (!elsiocb)
3791 return 1;
3792
3793 icmd = &elsiocb->iocb;
3794 icmd->ulpContext = oldcmd->ulpContext; /* Xri / rx_id */
3795 icmd->unsli3.rcvsli3.ox_id = oldcmd->unsli3.rcvsli3.ox_id;
3796 pcmd = (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
3797
3798 if (mbox)
3799 elsiocb->context_un.mbox = mbox;
3800
3801 *((uint32_t *) (pcmd)) = ELS_CMD_ACC;
3802 pcmd += sizeof(uint32_t);
3803 memcpy(pcmd, &vport->fc_sparam, sizeof(struct serv_parm));
3804
3805 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP,
3806 "Issue ACC PLOGI: did:x%x flg:x%x",
3807 ndlp->nlp_DID, ndlp->nlp_flag, 0);
3808 break;
3809 case ELS_CMD_PRLO:
3810 cmdsize = sizeof(uint32_t) + sizeof(PRLO);
3811 elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry,
3812 ndlp, ndlp->nlp_DID, ELS_CMD_PRLO);
3813 if (!elsiocb)
3814 return 1;
3815
3816 icmd = &elsiocb->iocb;
3817 icmd->ulpContext = oldcmd->ulpContext; /* Xri / rx_id */
3818 icmd->unsli3.rcvsli3.ox_id = oldcmd->unsli3.rcvsli3.ox_id;
3819 pcmd = (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
3820
3821 memcpy(pcmd, ((struct lpfc_dmabuf *) oldiocb->context2)->virt,
3822 sizeof(uint32_t) + sizeof(PRLO));
3823 *((uint32_t *) (pcmd)) = ELS_CMD_PRLO_ACC;
3824 els_pkt_ptr = (ELS_PKT *) pcmd;
3825 els_pkt_ptr->un.prlo.acceptRspCode = PRLO_REQ_EXECUTED;
3826
3827 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP,
3828 "Issue ACC PRLO: did:x%x flg:x%x",
3829 ndlp->nlp_DID, ndlp->nlp_flag, 0);
3830 break;
3831 default:
3832 return 1;
3833 }
3834 /* Xmit ELS ACC response tag <ulpIoTag> */
3835 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
3836 "0128 Xmit ELS ACC response tag x%x, XRI: x%x, "
3837 "DID: x%x, nlp_flag: x%x nlp_state: x%x RPI: x%x "
3838 "fc_flag x%x\n",
3839 elsiocb->iotag, elsiocb->iocb.ulpContext,
3840 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
3841 ndlp->nlp_rpi, vport->fc_flag);
3842 if (ndlp->nlp_flag & NLP_LOGO_ACC) {
3843 spin_lock_irq(shost->host_lock);
3844 ndlp->nlp_flag &= ~NLP_LOGO_ACC;
3845 spin_unlock_irq(shost->host_lock);
3846 elsiocb->iocb_cmpl = lpfc_cmpl_els_logo_acc;
3847 } else {
3848 elsiocb->iocb_cmpl = lpfc_cmpl_els_rsp;
3849 }
3850
3851 phba->fc_stat.elsXmitACC++;
3852 rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
3853 if (rc == IOCB_ERROR) {
3854 lpfc_els_free_iocb(phba, elsiocb);
3855 return 1;
3856 }
3857 return 0;
3858 }
3859
3860 /**
3861 * lpfc_els_rsp_reject - Propare and issue a rjt response iocb command
3862 * @vport: pointer to a virtual N_Port data structure.
3863 * @rejectError:
3864 * @oldiocb: pointer to the original lpfc command iocb data structure.
3865 * @ndlp: pointer to a node-list data structure.
3866 * @mbox: pointer to the driver internal queue element for mailbox command.
3867 *
3868 * This routine prepares and issue an Reject (RJT) response IOCB
3869 * command. If a @mbox pointer is passed in, it will be put into the
3870 * context_un.mbox field of the IOCB for the completion callback function
3871 * to issue to the HBA later.
3872 *
3873 * Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp
3874 * will be incremented by 1 for holding the ndlp and the reference to ndlp
3875 * will be stored into the context1 field of the IOCB for the completion
3876 * callback function to the reject response ELS IOCB command.
3877 *
3878 * Return code
3879 * 0 - Successfully issued reject response
3880 * 1 - Failed to issue reject response
3881 **/
3882 int
3883 lpfc_els_rsp_reject(struct lpfc_vport *vport, uint32_t rejectError,
3884 struct lpfc_iocbq *oldiocb, struct lpfc_nodelist *ndlp,
3885 LPFC_MBOXQ_t *mbox)
3886 {
3887 struct lpfc_hba *phba = vport->phba;
3888 IOCB_t *icmd;
3889 IOCB_t *oldcmd;
3890 struct lpfc_iocbq *elsiocb;
3891 struct lpfc_sli *psli;
3892 uint8_t *pcmd;
3893 uint16_t cmdsize;
3894 int rc;
3895
3896 psli = &phba->sli;
3897 cmdsize = 2 * sizeof(uint32_t);
3898 elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry, ndlp,
3899 ndlp->nlp_DID, ELS_CMD_LS_RJT);
3900 if (!elsiocb)
3901 return 1;
3902
3903 icmd = &elsiocb->iocb;
3904 oldcmd = &oldiocb->iocb;
3905 icmd->ulpContext = oldcmd->ulpContext; /* Xri / rx_id */
3906 icmd->unsli3.rcvsli3.ox_id = oldcmd->unsli3.rcvsli3.ox_id;
3907 pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
3908
3909 *((uint32_t *) (pcmd)) = ELS_CMD_LS_RJT;
3910 pcmd += sizeof(uint32_t);
3911 *((uint32_t *) (pcmd)) = rejectError;
3912
3913 if (mbox)
3914 elsiocb->context_un.mbox = mbox;
3915
3916 /* Xmit ELS RJT <err> response tag <ulpIoTag> */
3917 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
3918 "0129 Xmit ELS RJT x%x response tag x%x "
3919 "xri x%x, did x%x, nlp_flag x%x, nlp_state x%x, "
3920 "rpi x%x\n",
3921 rejectError, elsiocb->iotag,
3922 elsiocb->iocb.ulpContext, ndlp->nlp_DID,
3923 ndlp->nlp_flag, ndlp->nlp_state, ndlp->nlp_rpi);
3924 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP,
3925 "Issue LS_RJT: did:x%x flg:x%x err:x%x",
3926 ndlp->nlp_DID, ndlp->nlp_flag, rejectError);
3927
3928 phba->fc_stat.elsXmitLSRJT++;
3929 elsiocb->iocb_cmpl = lpfc_cmpl_els_rsp;
3930 rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
3931
3932 if (rc == IOCB_ERROR) {
3933 lpfc_els_free_iocb(phba, elsiocb);
3934 return 1;
3935 }
3936 return 0;
3937 }
3938
3939 /**
3940 * lpfc_els_rsp_adisc_acc - Prepare and issue acc response to adisc iocb cmd
3941 * @vport: pointer to a virtual N_Port data structure.
3942 * @oldiocb: pointer to the original lpfc command iocb data structure.
3943 * @ndlp: pointer to a node-list data structure.
3944 *
3945 * This routine prepares and issues an Accept (ACC) response to Address
3946 * Discover (ADISC) ELS command. It simply prepares the payload of the IOCB
3947 * and invokes the lpfc_sli_issue_iocb() routine to send out the command.
3948 *
3949 * Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp
3950 * will be incremented by 1 for holding the ndlp and the reference to ndlp
3951 * will be stored into the context1 field of the IOCB for the completion
3952 * callback function to the ADISC Accept response ELS IOCB command.
3953 *
3954 * Return code
3955 * 0 - Successfully issued acc adisc response
3956 * 1 - Failed to issue adisc acc response
3957 **/
3958 int
3959 lpfc_els_rsp_adisc_acc(struct lpfc_vport *vport, struct lpfc_iocbq *oldiocb,
3960 struct lpfc_nodelist *ndlp)
3961 {
3962 struct lpfc_hba *phba = vport->phba;
3963 ADISC *ap;
3964 IOCB_t *icmd, *oldcmd;
3965 struct lpfc_iocbq *elsiocb;
3966 uint8_t *pcmd;
3967 uint16_t cmdsize;
3968 int rc;
3969
3970 cmdsize = sizeof(uint32_t) + sizeof(ADISC);
3971 elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry, ndlp,
3972 ndlp->nlp_DID, ELS_CMD_ACC);
3973 if (!elsiocb)
3974 return 1;
3975
3976 icmd = &elsiocb->iocb;
3977 oldcmd = &oldiocb->iocb;
3978 icmd->ulpContext = oldcmd->ulpContext; /* Xri / rx_id */
3979 icmd->unsli3.rcvsli3.ox_id = oldcmd->unsli3.rcvsli3.ox_id;
3980
3981 /* Xmit ADISC ACC response tag <ulpIoTag> */
3982 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
3983 "0130 Xmit ADISC ACC response iotag x%x xri: "
3984 "x%x, did x%x, nlp_flag x%x, nlp_state x%x rpi x%x\n",
3985 elsiocb->iotag, elsiocb->iocb.ulpContext,
3986 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
3987 ndlp->nlp_rpi);
3988 pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
3989
3990 *((uint32_t *) (pcmd)) = ELS_CMD_ACC;
3991 pcmd += sizeof(uint32_t);
3992
3993 ap = (ADISC *) (pcmd);
3994 ap->hardAL_PA = phba->fc_pref_ALPA;
3995 memcpy(&ap->portName, &vport->fc_portname, sizeof(struct lpfc_name));
3996 memcpy(&ap->nodeName, &vport->fc_nodename, sizeof(struct lpfc_name));
3997 ap->DID = be32_to_cpu(vport->fc_myDID);
3998
3999 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP,
4000 "Issue ACC ADISC: did:x%x flg:x%x",
4001 ndlp->nlp_DID, ndlp->nlp_flag, 0);
4002
4003 phba->fc_stat.elsXmitACC++;
4004 elsiocb->iocb_cmpl = lpfc_cmpl_els_rsp;
4005 rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
4006 if (rc == IOCB_ERROR) {
4007 lpfc_els_free_iocb(phba, elsiocb);
4008 return 1;
4009 }
4010 return 0;
4011 }
4012
4013 /**
4014 * lpfc_els_rsp_prli_acc - Prepare and issue acc response to prli iocb cmd
4015 * @vport: pointer to a virtual N_Port data structure.
4016 * @oldiocb: pointer to the original lpfc command iocb data structure.
4017 * @ndlp: pointer to a node-list data structure.
4018 *
4019 * This routine prepares and issues an Accept (ACC) response to Process
4020 * Login (PRLI) ELS command. It simply prepares the payload of the IOCB
4021 * and invokes the lpfc_sli_issue_iocb() routine to send out the command.
4022 *
4023 * Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp
4024 * will be incremented by 1 for holding the ndlp and the reference to ndlp
4025 * will be stored into the context1 field of the IOCB for the completion
4026 * callback function to the PRLI Accept response ELS IOCB command.
4027 *
4028 * Return code
4029 * 0 - Successfully issued acc prli response
4030 * 1 - Failed to issue acc prli response
4031 **/
4032 int
4033 lpfc_els_rsp_prli_acc(struct lpfc_vport *vport, struct lpfc_iocbq *oldiocb,
4034 struct lpfc_nodelist *ndlp)
4035 {
4036 struct lpfc_hba *phba = vport->phba;
4037 PRLI *npr;
4038 lpfc_vpd_t *vpd;
4039 IOCB_t *icmd;
4040 IOCB_t *oldcmd;
4041 struct lpfc_iocbq *elsiocb;
4042 struct lpfc_sli *psli;
4043 uint8_t *pcmd;
4044 uint16_t cmdsize;
4045 int rc;
4046
4047 psli = &phba->sli;
4048
4049 cmdsize = sizeof(uint32_t) + sizeof(PRLI);
4050 elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry, ndlp,
4051 ndlp->nlp_DID, (ELS_CMD_ACC | (ELS_CMD_PRLI & ~ELS_RSP_MASK)));
4052 if (!elsiocb)
4053 return 1;
4054
4055 icmd = &elsiocb->iocb;
4056 oldcmd = &oldiocb->iocb;
4057 icmd->ulpContext = oldcmd->ulpContext; /* Xri / rx_id */
4058 icmd->unsli3.rcvsli3.ox_id = oldcmd->unsli3.rcvsli3.ox_id;
4059
4060 /* Xmit PRLI ACC response tag <ulpIoTag> */
4061 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
4062 "0131 Xmit PRLI ACC response tag x%x xri x%x, "
4063 "did x%x, nlp_flag x%x, nlp_state x%x, rpi x%x\n",
4064 elsiocb->iotag, elsiocb->iocb.ulpContext,
4065 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
4066 ndlp->nlp_rpi);
4067 pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
4068
4069 *((uint32_t *) (pcmd)) = (ELS_CMD_ACC | (ELS_CMD_PRLI & ~ELS_RSP_MASK));
4070 pcmd += sizeof(uint32_t);
4071
4072 /* For PRLI, remainder of payload is PRLI parameter page */
4073 memset(pcmd, 0, sizeof(PRLI));
4074
4075 npr = (PRLI *) pcmd;
4076 vpd = &phba->vpd;
4077 /*
4078 * If the remote port is a target and our firmware version is 3.20 or
4079 * later, set the following bits for FC-TAPE support.
4080 */
4081 if ((ndlp->nlp_type & NLP_FCP_TARGET) &&
4082 (vpd->rev.feaLevelHigh >= 0x02)) {
4083 npr->ConfmComplAllowed = 1;
4084 npr->Retry = 1;
4085 npr->TaskRetryIdReq = 1;
4086 }
4087
4088 npr->acceptRspCode = PRLI_REQ_EXECUTED;
4089 npr->estabImagePair = 1;
4090 npr->readXferRdyDis = 1;
4091 npr->ConfmComplAllowed = 1;
4092
4093 npr->prliType = PRLI_FCP_TYPE;
4094 npr->initiatorFunc = 1;
4095
4096 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP,
4097 "Issue ACC PRLI: did:x%x flg:x%x",
4098 ndlp->nlp_DID, ndlp->nlp_flag, 0);
4099
4100 phba->fc_stat.elsXmitACC++;
4101 elsiocb->iocb_cmpl = lpfc_cmpl_els_rsp;
4102
4103 rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
4104 if (rc == IOCB_ERROR) {
4105 lpfc_els_free_iocb(phba, elsiocb);
4106 return 1;
4107 }
4108 return 0;
4109 }
4110
4111 /**
4112 * lpfc_els_rsp_rnid_acc - Issue rnid acc response iocb command
4113 * @vport: pointer to a virtual N_Port data structure.
4114 * @format: rnid command format.
4115 * @oldiocb: pointer to the original lpfc command iocb data structure.
4116 * @ndlp: pointer to a node-list data structure.
4117 *
4118 * This routine issues a Request Node Identification Data (RNID) Accept
4119 * (ACC) response. It constructs the RNID ACC response command according to
4120 * the proper @format and then calls the lpfc_sli_issue_iocb() routine to
4121 * issue the response. Note that this command does not need to hold the ndlp
4122 * reference count for the callback. So, the ndlp reference count taken by
4123 * the lpfc_prep_els_iocb() routine is put back and the context1 field of
4124 * IOCB is set to NULL to indicate to the lpfc_els_free_iocb() routine that
4125 * there is no ndlp reference available.
4126 *
4127 * Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp
4128 * will be incremented by 1 for holding the ndlp and the reference to ndlp
4129 * will be stored into the context1 field of the IOCB for the completion
4130 * callback function. However, for the RNID Accept Response ELS command,
4131 * this is undone later by this routine after the IOCB is allocated.
4132 *
4133 * Return code
4134 * 0 - Successfully issued acc rnid response
4135 * 1 - Failed to issue acc rnid response
4136 **/
4137 static int
4138 lpfc_els_rsp_rnid_acc(struct lpfc_vport *vport, uint8_t format,
4139 struct lpfc_iocbq *oldiocb, struct lpfc_nodelist *ndlp)
4140 {
4141 struct lpfc_hba *phba = vport->phba;
4142 RNID *rn;
4143 IOCB_t *icmd, *oldcmd;
4144 struct lpfc_iocbq *elsiocb;
4145 struct lpfc_sli *psli;
4146 uint8_t *pcmd;
4147 uint16_t cmdsize;
4148 int rc;
4149
4150 psli = &phba->sli;
4151 cmdsize = sizeof(uint32_t) + sizeof(uint32_t)
4152 + (2 * sizeof(struct lpfc_name));
4153 if (format)
4154 cmdsize += sizeof(RNID_TOP_DISC);
4155
4156 elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry, ndlp,
4157 ndlp->nlp_DID, ELS_CMD_ACC);
4158 if (!elsiocb)
4159 return 1;
4160
4161 icmd = &elsiocb->iocb;
4162 oldcmd = &oldiocb->iocb;
4163 icmd->ulpContext = oldcmd->ulpContext; /* Xri / rx_id */
4164 icmd->unsli3.rcvsli3.ox_id = oldcmd->unsli3.rcvsli3.ox_id;
4165
4166 /* Xmit RNID ACC response tag <ulpIoTag> */
4167 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
4168 "0132 Xmit RNID ACC response tag x%x xri x%x\n",
4169 elsiocb->iotag, elsiocb->iocb.ulpContext);
4170 pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
4171 *((uint32_t *) (pcmd)) = ELS_CMD_ACC;
4172 pcmd += sizeof(uint32_t);
4173
4174 memset(pcmd, 0, sizeof(RNID));
4175 rn = (RNID *) (pcmd);
4176 rn->Format = format;
4177 rn->CommonLen = (2 * sizeof(struct lpfc_name));
4178 memcpy(&rn->portName, &vport->fc_portname, sizeof(struct lpfc_name));
4179 memcpy(&rn->nodeName, &vport->fc_nodename, sizeof(struct lpfc_name));
4180 switch (format) {
4181 case 0:
4182 rn->SpecificLen = 0;
4183 break;
4184 case RNID_TOPOLOGY_DISC:
4185 rn->SpecificLen = sizeof(RNID_TOP_DISC);
4186 memcpy(&rn->un.topologyDisc.portName,
4187 &vport->fc_portname, sizeof(struct lpfc_name));
4188 rn->un.topologyDisc.unitType = RNID_HBA;
4189 rn->un.topologyDisc.physPort = 0;
4190 rn->un.topologyDisc.attachedNodes = 0;
4191 break;
4192 default:
4193 rn->CommonLen = 0;
4194 rn->SpecificLen = 0;
4195 break;
4196 }
4197
4198 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP,
4199 "Issue ACC RNID: did:x%x flg:x%x",
4200 ndlp->nlp_DID, ndlp->nlp_flag, 0);
4201
4202 phba->fc_stat.elsXmitACC++;
4203 elsiocb->iocb_cmpl = lpfc_cmpl_els_rsp;
4204
4205 rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
4206 if (rc == IOCB_ERROR) {
4207 lpfc_els_free_iocb(phba, elsiocb);
4208 return 1;
4209 }
4210 return 0;
4211 }
4212
4213 /**
4214 * lpfc_els_clear_rrq - Clear the rq that this rrq describes.
4215 * @vport: pointer to a virtual N_Port data structure.
4216 * @iocb: pointer to the lpfc command iocb data structure.
4217 * @ndlp: pointer to a node-list data structure.
4218 *
4219 * Return
4220 **/
4221 static void
4222 lpfc_els_clear_rrq(struct lpfc_vport *vport,
4223 struct lpfc_iocbq *iocb, struct lpfc_nodelist *ndlp)
4224 {
4225 struct lpfc_hba *phba = vport->phba;
4226 uint8_t *pcmd;
4227 struct RRQ *rrq;
4228 uint16_t rxid;
4229 uint16_t xri;
4230 struct lpfc_node_rrq *prrq;
4231
4232
4233 pcmd = (uint8_t *) (((struct lpfc_dmabuf *) iocb->context2)->virt);
4234 pcmd += sizeof(uint32_t);
4235 rrq = (struct RRQ *)pcmd;
4236 rrq->rrq_exchg = be32_to_cpu(rrq->rrq_exchg);
4237 rxid = bf_get(rrq_rxid, rrq);
4238
4239 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
4240 "2883 Clear RRQ for SID:x%x OXID:x%x RXID:x%x"
4241 " x%x x%x\n",
4242 be32_to_cpu(bf_get(rrq_did, rrq)),
4243 bf_get(rrq_oxid, rrq),
4244 rxid,
4245 iocb->iotag, iocb->iocb.ulpContext);
4246
4247 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP,
4248 "Clear RRQ: did:x%x flg:x%x exchg:x%.08x",
4249 ndlp->nlp_DID, ndlp->nlp_flag, rrq->rrq_exchg);
4250 if (vport->fc_myDID == be32_to_cpu(bf_get(rrq_did, rrq)))
4251 xri = bf_get(rrq_oxid, rrq);
4252 else
4253 xri = rxid;
4254 prrq = lpfc_get_active_rrq(vport, xri, ndlp->nlp_DID);
4255 if (prrq)
4256 lpfc_clr_rrq_active(phba, xri, prrq);
4257 return;
4258 }
4259
4260 /**
4261 * lpfc_els_rsp_echo_acc - Issue echo acc response
4262 * @vport: pointer to a virtual N_Port data structure.
4263 * @data: pointer to echo data to return in the accept.
4264 * @oldiocb: pointer to the original lpfc command iocb data structure.
4265 * @ndlp: pointer to a node-list data structure.
4266 *
4267 * Return code
4268 * 0 - Successfully issued acc echo response
4269 * 1 - Failed to issue acc echo response
4270 **/
4271 static int
4272 lpfc_els_rsp_echo_acc(struct lpfc_vport *vport, uint8_t *data,
4273 struct lpfc_iocbq *oldiocb, struct lpfc_nodelist *ndlp)
4274 {
4275 struct lpfc_hba *phba = vport->phba;
4276 struct lpfc_iocbq *elsiocb;
4277 struct lpfc_sli *psli;
4278 uint8_t *pcmd;
4279 uint16_t cmdsize;
4280 int rc;
4281
4282 psli = &phba->sli;
4283 cmdsize = oldiocb->iocb.unsli3.rcvsli3.acc_len;
4284
4285 /* The accumulated length can exceed the BPL_SIZE. For
4286 * now, use this as the limit
4287 */
4288 if (cmdsize > LPFC_BPL_SIZE)
4289 cmdsize = LPFC_BPL_SIZE;
4290 elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry, ndlp,
4291 ndlp->nlp_DID, ELS_CMD_ACC);
4292 if (!elsiocb)
4293 return 1;
4294
4295 elsiocb->iocb.ulpContext = oldiocb->iocb.ulpContext; /* Xri / rx_id */
4296 elsiocb->iocb.unsli3.rcvsli3.ox_id = oldiocb->iocb.unsli3.rcvsli3.ox_id;
4297
4298 /* Xmit ECHO ACC response tag <ulpIoTag> */
4299 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
4300 "2876 Xmit ECHO ACC response tag x%x xri x%x\n",
4301 elsiocb->iotag, elsiocb->iocb.ulpContext);
4302 pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
4303 *((uint32_t *) (pcmd)) = ELS_CMD_ACC;
4304 pcmd += sizeof(uint32_t);
4305 memcpy(pcmd, data, cmdsize - sizeof(uint32_t));
4306
4307 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP,
4308 "Issue ACC ECHO: did:x%x flg:x%x",
4309 ndlp->nlp_DID, ndlp->nlp_flag, 0);
4310
4311 phba->fc_stat.elsXmitACC++;
4312 elsiocb->iocb_cmpl = lpfc_cmpl_els_rsp;
4313
4314 rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
4315 if (rc == IOCB_ERROR) {
4316 lpfc_els_free_iocb(phba, elsiocb);
4317 return 1;
4318 }
4319 return 0;
4320 }
4321
4322 /**
4323 * lpfc_els_disc_adisc - Issue remaining adisc iocbs to npr nodes of a vport
4324 * @vport: pointer to a host virtual N_Port data structure.
4325 *
4326 * This routine issues Address Discover (ADISC) ELS commands to those
4327 * N_Ports which are in node port recovery state and ADISC has not been issued
4328 * for the @vport. Each time an ELS ADISC IOCB is issued by invoking the
4329 * lpfc_issue_els_adisc() routine, the per @vport number of discover count
4330 * (num_disc_nodes) shall be incremented. If the num_disc_nodes reaches a
4331 * pre-configured threshold (cfg_discovery_threads), the @vport fc_flag will
4332 * be marked with FC_NLP_MORE bit and the process of issuing remaining ADISC
4333 * IOCBs quit for later pick up. On the other hand, after walking through
4334 * all the ndlps with the @vport and there is none ADISC IOCB issued, the
4335 * @vport fc_flag shall be cleared with FC_NLP_MORE bit indicating there is
4336 * no more ADISC need to be sent.
4337 *
4338 * Return code
4339 * The number of N_Ports with adisc issued.
4340 **/
4341 int
4342 lpfc_els_disc_adisc(struct lpfc_vport *vport)
4343 {
4344 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4345 struct lpfc_nodelist *ndlp, *next_ndlp;
4346 int sentadisc = 0;
4347
4348 /* go thru NPR nodes and issue any remaining ELS ADISCs */
4349 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) {
4350 if (!NLP_CHK_NODE_ACT(ndlp))
4351 continue;
4352 if (ndlp->nlp_state == NLP_STE_NPR_NODE &&
4353 (ndlp->nlp_flag & NLP_NPR_2B_DISC) != 0 &&
4354 (ndlp->nlp_flag & NLP_NPR_ADISC) != 0) {
4355 spin_lock_irq(shost->host_lock);
4356 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
4357 spin_unlock_irq(shost->host_lock);
4358 ndlp->nlp_prev_state = ndlp->nlp_state;
4359 lpfc_nlp_set_state(vport, ndlp, NLP_STE_ADISC_ISSUE);
4360 lpfc_issue_els_adisc(vport, ndlp, 0);
4361 sentadisc++;
4362 vport->num_disc_nodes++;
4363 if (vport->num_disc_nodes >=
4364 vport->cfg_discovery_threads) {
4365 spin_lock_irq(shost->host_lock);
4366 vport->fc_flag |= FC_NLP_MORE;
4367 spin_unlock_irq(shost->host_lock);
4368 break;
4369 }
4370 }
4371 }
4372 if (sentadisc == 0) {
4373 spin_lock_irq(shost->host_lock);
4374 vport->fc_flag &= ~FC_NLP_MORE;
4375 spin_unlock_irq(shost->host_lock);
4376 }
4377 return sentadisc;
4378 }
4379
4380 /**
4381 * lpfc_els_disc_plogi - Issue plogi for all npr nodes of a vport before adisc
4382 * @vport: pointer to a host virtual N_Port data structure.
4383 *
4384 * This routine issues Port Login (PLOGI) ELS commands to all the N_Ports
4385 * which are in node port recovery state, with a @vport. Each time an ELS
4386 * ADISC PLOGI IOCB is issued by invoking the lpfc_issue_els_plogi() routine,
4387 * the per @vport number of discover count (num_disc_nodes) shall be
4388 * incremented. If the num_disc_nodes reaches a pre-configured threshold
4389 * (cfg_discovery_threads), the @vport fc_flag will be marked with FC_NLP_MORE
4390 * bit set and quit the process of issuing remaining ADISC PLOGIN IOCBs for
4391 * later pick up. On the other hand, after walking through all the ndlps with
4392 * the @vport and there is none ADISC PLOGI IOCB issued, the @vport fc_flag
4393 * shall be cleared with the FC_NLP_MORE bit indicating there is no more ADISC
4394 * PLOGI need to be sent.
4395 *
4396 * Return code
4397 * The number of N_Ports with plogi issued.
4398 **/
4399 int
4400 lpfc_els_disc_plogi(struct lpfc_vport *vport)
4401 {
4402 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4403 struct lpfc_nodelist *ndlp, *next_ndlp;
4404 int sentplogi = 0;
4405
4406 /* go thru NPR nodes and issue any remaining ELS PLOGIs */
4407 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) {
4408 if (!NLP_CHK_NODE_ACT(ndlp))
4409 continue;
4410 if (ndlp->nlp_state == NLP_STE_NPR_NODE &&
4411 (ndlp->nlp_flag & NLP_NPR_2B_DISC) != 0 &&
4412 (ndlp->nlp_flag & NLP_DELAY_TMO) == 0 &&
4413 (ndlp->nlp_flag & NLP_NPR_ADISC) == 0) {
4414 ndlp->nlp_prev_state = ndlp->nlp_state;
4415 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
4416 lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
4417 sentplogi++;
4418 vport->num_disc_nodes++;
4419 if (vport->num_disc_nodes >=
4420 vport->cfg_discovery_threads) {
4421 spin_lock_irq(shost->host_lock);
4422 vport->fc_flag |= FC_NLP_MORE;
4423 spin_unlock_irq(shost->host_lock);
4424 break;
4425 }
4426 }
4427 }
4428 if (sentplogi) {
4429 lpfc_set_disctmo(vport);
4430 }
4431 else {
4432 spin_lock_irq(shost->host_lock);
4433 vport->fc_flag &= ~FC_NLP_MORE;
4434 spin_unlock_irq(shost->host_lock);
4435 }
4436 return sentplogi;
4437 }
4438
4439 /**
4440 * lpfc_els_flush_rscn - Clean up any rscn activities with a vport
4441 * @vport: pointer to a host virtual N_Port data structure.
4442 *
4443 * This routine cleans up any Registration State Change Notification
4444 * (RSCN) activity with a @vport. Note that the fc_rscn_flush flag of the
4445 * @vport together with the host_lock is used to prevent multiple thread
4446 * trying to access the RSCN array on a same @vport at the same time.
4447 **/
4448 void
4449 lpfc_els_flush_rscn(struct lpfc_vport *vport)
4450 {
4451 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4452 struct lpfc_hba *phba = vport->phba;
4453 int i;
4454
4455 spin_lock_irq(shost->host_lock);
4456 if (vport->fc_rscn_flush) {
4457 /* Another thread is walking fc_rscn_id_list on this vport */
4458 spin_unlock_irq(shost->host_lock);
4459 return;
4460 }
4461 /* Indicate we are walking lpfc_els_flush_rscn on this vport */
4462 vport->fc_rscn_flush = 1;
4463 spin_unlock_irq(shost->host_lock);
4464
4465 for (i = 0; i < vport->fc_rscn_id_cnt; i++) {
4466 lpfc_in_buf_free(phba, vport->fc_rscn_id_list[i]);
4467 vport->fc_rscn_id_list[i] = NULL;
4468 }
4469 spin_lock_irq(shost->host_lock);
4470 vport->fc_rscn_id_cnt = 0;
4471 vport->fc_flag &= ~(FC_RSCN_MODE | FC_RSCN_DISCOVERY);
4472 spin_unlock_irq(shost->host_lock);
4473 lpfc_can_disctmo(vport);
4474 /* Indicate we are done walking this fc_rscn_id_list */
4475 vport->fc_rscn_flush = 0;
4476 }
4477
4478 /**
4479 * lpfc_rscn_payload_check - Check whether there is a pending rscn to a did
4480 * @vport: pointer to a host virtual N_Port data structure.
4481 * @did: remote destination port identifier.
4482 *
4483 * This routine checks whether there is any pending Registration State
4484 * Configuration Notification (RSCN) to a @did on @vport.
4485 *
4486 * Return code
4487 * None zero - The @did matched with a pending rscn
4488 * 0 - not able to match @did with a pending rscn
4489 **/
4490 int
4491 lpfc_rscn_payload_check(struct lpfc_vport *vport, uint32_t did)
4492 {
4493 D_ID ns_did;
4494 D_ID rscn_did;
4495 uint32_t *lp;
4496 uint32_t payload_len, i;
4497 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4498
4499 ns_did.un.word = did;
4500
4501 /* Never match fabric nodes for RSCNs */
4502 if ((did & Fabric_DID_MASK) == Fabric_DID_MASK)
4503 return 0;
4504
4505 /* If we are doing a FULL RSCN rediscovery, match everything */
4506 if (vport->fc_flag & FC_RSCN_DISCOVERY)
4507 return did;
4508
4509 spin_lock_irq(shost->host_lock);
4510 if (vport->fc_rscn_flush) {
4511 /* Another thread is walking fc_rscn_id_list on this vport */
4512 spin_unlock_irq(shost->host_lock);
4513 return 0;
4514 }
4515 /* Indicate we are walking fc_rscn_id_list on this vport */
4516 vport->fc_rscn_flush = 1;
4517 spin_unlock_irq(shost->host_lock);
4518 for (i = 0; i < vport->fc_rscn_id_cnt; i++) {
4519 lp = vport->fc_rscn_id_list[i]->virt;
4520 payload_len = be32_to_cpu(*lp++ & ~ELS_CMD_MASK);
4521 payload_len -= sizeof(uint32_t); /* take off word 0 */
4522 while (payload_len) {
4523 rscn_did.un.word = be32_to_cpu(*lp++);
4524 payload_len -= sizeof(uint32_t);
4525 switch (rscn_did.un.b.resv & RSCN_ADDRESS_FORMAT_MASK) {
4526 case RSCN_ADDRESS_FORMAT_PORT:
4527 if ((ns_did.un.b.domain == rscn_did.un.b.domain)
4528 && (ns_did.un.b.area == rscn_did.un.b.area)
4529 && (ns_did.un.b.id == rscn_did.un.b.id))
4530 goto return_did_out;
4531 break;
4532 case RSCN_ADDRESS_FORMAT_AREA:
4533 if ((ns_did.un.b.domain == rscn_did.un.b.domain)
4534 && (ns_did.un.b.area == rscn_did.un.b.area))
4535 goto return_did_out;
4536 break;
4537 case RSCN_ADDRESS_FORMAT_DOMAIN:
4538 if (ns_did.un.b.domain == rscn_did.un.b.domain)
4539 goto return_did_out;
4540 break;
4541 case RSCN_ADDRESS_FORMAT_FABRIC:
4542 goto return_did_out;
4543 }
4544 }
4545 }
4546 /* Indicate we are done with walking fc_rscn_id_list on this vport */
4547 vport->fc_rscn_flush = 0;
4548 return 0;
4549 return_did_out:
4550 /* Indicate we are done with walking fc_rscn_id_list on this vport */
4551 vport->fc_rscn_flush = 0;
4552 return did;
4553 }
4554
4555 /**
4556 * lpfc_rscn_recovery_check - Send recovery event to vport nodes matching rscn
4557 * @vport: pointer to a host virtual N_Port data structure.
4558 *
4559 * This routine sends recovery (NLP_EVT_DEVICE_RECOVERY) event to the
4560 * state machine for a @vport's nodes that are with pending RSCN (Registration
4561 * State Change Notification).
4562 *
4563 * Return code
4564 * 0 - Successful (currently alway return 0)
4565 **/
4566 static int
4567 lpfc_rscn_recovery_check(struct lpfc_vport *vport)
4568 {
4569 struct lpfc_nodelist *ndlp = NULL;
4570
4571 /* Move all affected nodes by pending RSCNs to NPR state. */
4572 list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
4573 if (!NLP_CHK_NODE_ACT(ndlp) ||
4574 (ndlp->nlp_state == NLP_STE_UNUSED_NODE) ||
4575 !lpfc_rscn_payload_check(vport, ndlp->nlp_DID))
4576 continue;
4577 lpfc_disc_state_machine(vport, ndlp, NULL,
4578 NLP_EVT_DEVICE_RECOVERY);
4579 lpfc_cancel_retry_delay_tmo(vport, ndlp);
4580 }
4581 return 0;
4582 }
4583
4584 /**
4585 * lpfc_send_rscn_event - Send an RSCN event to management application
4586 * @vport: pointer to a host virtual N_Port data structure.
4587 * @cmdiocb: pointer to lpfc command iocb data structure.
4588 *
4589 * lpfc_send_rscn_event sends an RSCN netlink event to management
4590 * applications.
4591 */
4592 static void
4593 lpfc_send_rscn_event(struct lpfc_vport *vport,
4594 struct lpfc_iocbq *cmdiocb)
4595 {
4596 struct lpfc_dmabuf *pcmd;
4597 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4598 uint32_t *payload_ptr;
4599 uint32_t payload_len;
4600 struct lpfc_rscn_event_header *rscn_event_data;
4601
4602 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
4603 payload_ptr = (uint32_t *) pcmd->virt;
4604 payload_len = be32_to_cpu(*payload_ptr & ~ELS_CMD_MASK);
4605
4606 rscn_event_data = kmalloc(sizeof(struct lpfc_rscn_event_header) +
4607 payload_len, GFP_KERNEL);
4608 if (!rscn_event_data) {
4609 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
4610 "0147 Failed to allocate memory for RSCN event\n");
4611 return;
4612 }
4613 rscn_event_data->event_type = FC_REG_RSCN_EVENT;
4614 rscn_event_data->payload_length = payload_len;
4615 memcpy(rscn_event_data->rscn_payload, payload_ptr,
4616 payload_len);
4617
4618 fc_host_post_vendor_event(shost,
4619 fc_get_event_number(),
4620 sizeof(struct lpfc_els_event_header) + payload_len,
4621 (char *)rscn_event_data,
4622 LPFC_NL_VENDOR_ID);
4623
4624 kfree(rscn_event_data);
4625 }
4626
4627 /**
4628 * lpfc_els_rcv_rscn - Process an unsolicited rscn iocb
4629 * @vport: pointer to a host virtual N_Port data structure.
4630 * @cmdiocb: pointer to lpfc command iocb data structure.
4631 * @ndlp: pointer to a node-list data structure.
4632 *
4633 * This routine processes an unsolicited RSCN (Registration State Change
4634 * Notification) IOCB. First, the payload of the unsolicited RSCN is walked
4635 * to invoke fc_host_post_event() routine to the FC transport layer. If the
4636 * discover state machine is about to begin discovery, it just accepts the
4637 * RSCN and the discovery process will satisfy the RSCN. If this RSCN only
4638 * contains N_Port IDs for other vports on this HBA, it just accepts the
4639 * RSCN and ignore processing it. If the state machine is in the recovery
4640 * state, the fc_rscn_id_list of this @vport is walked and the
4641 * lpfc_rscn_recovery_check() routine is invoked to send recovery event for
4642 * all nodes that match RSCN payload. Otherwise, the lpfc_els_handle_rscn()
4643 * routine is invoked to handle the RSCN event.
4644 *
4645 * Return code
4646 * 0 - Just sent the acc response
4647 * 1 - Sent the acc response and waited for name server completion
4648 **/
4649 static int
4650 lpfc_els_rcv_rscn(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
4651 struct lpfc_nodelist *ndlp)
4652 {
4653 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4654 struct lpfc_hba *phba = vport->phba;
4655 struct lpfc_dmabuf *pcmd;
4656 uint32_t *lp, *datap;
4657 IOCB_t *icmd;
4658 uint32_t payload_len, length, nportid, *cmd;
4659 int rscn_cnt;
4660 int rscn_id = 0, hba_id = 0;
4661 int i;
4662
4663 icmd = &cmdiocb->iocb;
4664 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
4665 lp = (uint32_t *) pcmd->virt;
4666
4667 payload_len = be32_to_cpu(*lp++ & ~ELS_CMD_MASK);
4668 payload_len -= sizeof(uint32_t); /* take off word 0 */
4669 /* RSCN received */
4670 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
4671 "0214 RSCN received Data: x%x x%x x%x x%x\n",
4672 vport->fc_flag, payload_len, *lp,
4673 vport->fc_rscn_id_cnt);
4674
4675 /* Send an RSCN event to the management application */
4676 lpfc_send_rscn_event(vport, cmdiocb);
4677
4678 for (i = 0; i < payload_len/sizeof(uint32_t); i++)
4679 fc_host_post_event(shost, fc_get_event_number(),
4680 FCH_EVT_RSCN, lp[i]);
4681
4682 /* If we are about to begin discovery, just ACC the RSCN.
4683 * Discovery processing will satisfy it.
4684 */
4685 if (vport->port_state <= LPFC_NS_QRY) {
4686 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
4687 "RCV RSCN ignore: did:x%x/ste:x%x flg:x%x",
4688 ndlp->nlp_DID, vport->port_state, ndlp->nlp_flag);
4689
4690 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
4691 return 0;
4692 }
4693
4694 /* If this RSCN just contains NPortIDs for other vports on this HBA,
4695 * just ACC and ignore it.
4696 */
4697 if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
4698 !(vport->cfg_peer_port_login)) {
4699 i = payload_len;
4700 datap = lp;
4701 while (i > 0) {
4702 nportid = *datap++;
4703 nportid = ((be32_to_cpu(nportid)) & Mask_DID);
4704 i -= sizeof(uint32_t);
4705 rscn_id++;
4706 if (lpfc_find_vport_by_did(phba, nportid))
4707 hba_id++;
4708 }
4709 if (rscn_id == hba_id) {
4710 /* ALL NPortIDs in RSCN are on HBA */
4711 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
4712 "0219 Ignore RSCN "
4713 "Data: x%x x%x x%x x%x\n",
4714 vport->fc_flag, payload_len,
4715 *lp, vport->fc_rscn_id_cnt);
4716 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
4717 "RCV RSCN vport: did:x%x/ste:x%x flg:x%x",
4718 ndlp->nlp_DID, vport->port_state,
4719 ndlp->nlp_flag);
4720
4721 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb,
4722 ndlp, NULL);
4723 return 0;
4724 }
4725 }
4726
4727 spin_lock_irq(shost->host_lock);
4728 if (vport->fc_rscn_flush) {
4729 /* Another thread is walking fc_rscn_id_list on this vport */
4730 vport->fc_flag |= FC_RSCN_DISCOVERY;
4731 spin_unlock_irq(shost->host_lock);
4732 /* Send back ACC */
4733 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
4734 return 0;
4735 }
4736 /* Indicate we are walking fc_rscn_id_list on this vport */
4737 vport->fc_rscn_flush = 1;
4738 spin_unlock_irq(shost->host_lock);
4739 /* Get the array count after successfully have the token */
4740 rscn_cnt = vport->fc_rscn_id_cnt;
4741 /* If we are already processing an RSCN, save the received
4742 * RSCN payload buffer, cmdiocb->context2 to process later.
4743 */
4744 if (vport->fc_flag & (FC_RSCN_MODE | FC_NDISC_ACTIVE)) {
4745 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
4746 "RCV RSCN defer: did:x%x/ste:x%x flg:x%x",
4747 ndlp->nlp_DID, vport->port_state, ndlp->nlp_flag);
4748
4749 spin_lock_irq(shost->host_lock);
4750 vport->fc_flag |= FC_RSCN_DEFERRED;
4751 if ((rscn_cnt < FC_MAX_HOLD_RSCN) &&
4752 !(vport->fc_flag & FC_RSCN_DISCOVERY)) {
4753 vport->fc_flag |= FC_RSCN_MODE;
4754 spin_unlock_irq(shost->host_lock);
4755 if (rscn_cnt) {
4756 cmd = vport->fc_rscn_id_list[rscn_cnt-1]->virt;
4757 length = be32_to_cpu(*cmd & ~ELS_CMD_MASK);
4758 }
4759 if ((rscn_cnt) &&
4760 (payload_len + length <= LPFC_BPL_SIZE)) {
4761 *cmd &= ELS_CMD_MASK;
4762 *cmd |= cpu_to_be32(payload_len + length);
4763 memcpy(((uint8_t *)cmd) + length, lp,
4764 payload_len);
4765 } else {
4766 vport->fc_rscn_id_list[rscn_cnt] = pcmd;
4767 vport->fc_rscn_id_cnt++;
4768 /* If we zero, cmdiocb->context2, the calling
4769 * routine will not try to free it.
4770 */
4771 cmdiocb->context2 = NULL;
4772 }
4773 /* Deferred RSCN */
4774 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
4775 "0235 Deferred RSCN "
4776 "Data: x%x x%x x%x\n",
4777 vport->fc_rscn_id_cnt, vport->fc_flag,
4778 vport->port_state);
4779 } else {
4780 vport->fc_flag |= FC_RSCN_DISCOVERY;
4781 spin_unlock_irq(shost->host_lock);
4782 /* ReDiscovery RSCN */
4783 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
4784 "0234 ReDiscovery RSCN "
4785 "Data: x%x x%x x%x\n",
4786 vport->fc_rscn_id_cnt, vport->fc_flag,
4787 vport->port_state);
4788 }
4789 /* Indicate we are done walking fc_rscn_id_list on this vport */
4790 vport->fc_rscn_flush = 0;
4791 /* Send back ACC */
4792 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
4793 /* send RECOVERY event for ALL nodes that match RSCN payload */
4794 lpfc_rscn_recovery_check(vport);
4795 spin_lock_irq(shost->host_lock);
4796 vport->fc_flag &= ~FC_RSCN_DEFERRED;
4797 spin_unlock_irq(shost->host_lock);
4798 return 0;
4799 }
4800 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
4801 "RCV RSCN: did:x%x/ste:x%x flg:x%x",
4802 ndlp->nlp_DID, vport->port_state, ndlp->nlp_flag);
4803
4804 spin_lock_irq(shost->host_lock);
4805 vport->fc_flag |= FC_RSCN_MODE;
4806 spin_unlock_irq(shost->host_lock);
4807 vport->fc_rscn_id_list[vport->fc_rscn_id_cnt++] = pcmd;
4808 /* Indicate we are done walking fc_rscn_id_list on this vport */
4809 vport->fc_rscn_flush = 0;
4810 /*
4811 * If we zero, cmdiocb->context2, the calling routine will
4812 * not try to free it.
4813 */
4814 cmdiocb->context2 = NULL;
4815 lpfc_set_disctmo(vport);
4816 /* Send back ACC */
4817 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
4818 /* send RECOVERY event for ALL nodes that match RSCN payload */
4819 lpfc_rscn_recovery_check(vport);
4820 return lpfc_els_handle_rscn(vport);
4821 }
4822
4823 /**
4824 * lpfc_els_handle_rscn - Handle rscn for a vport
4825 * @vport: pointer to a host virtual N_Port data structure.
4826 *
4827 * This routine handles the Registration State Configuration Notification
4828 * (RSCN) for a @vport. If login to NameServer does not exist, a new ndlp shall
4829 * be created and a Port Login (PLOGI) to the NameServer is issued. Otherwise,
4830 * if the ndlp to NameServer exists, a Common Transport (CT) command to the
4831 * NameServer shall be issued. If CT command to the NameServer fails to be
4832 * issued, the lpfc_els_flush_rscn() routine shall be invoked to clean up any
4833 * RSCN activities with the @vport.
4834 *
4835 * Return code
4836 * 0 - Cleaned up rscn on the @vport
4837 * 1 - Wait for plogi to name server before proceed
4838 **/
4839 int
4840 lpfc_els_handle_rscn(struct lpfc_vport *vport)
4841 {
4842 struct lpfc_nodelist *ndlp;
4843 struct lpfc_hba *phba = vport->phba;
4844
4845 /* Ignore RSCN if the port is being torn down. */
4846 if (vport->load_flag & FC_UNLOADING) {
4847 lpfc_els_flush_rscn(vport);
4848 return 0;
4849 }
4850
4851 /* Start timer for RSCN processing */
4852 lpfc_set_disctmo(vport);
4853
4854 /* RSCN processed */
4855 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
4856 "0215 RSCN processed Data: x%x x%x x%x x%x\n",
4857 vport->fc_flag, 0, vport->fc_rscn_id_cnt,
4858 vport->port_state);
4859
4860 /* To process RSCN, first compare RSCN data with NameServer */
4861 vport->fc_ns_retry = 0;
4862 vport->num_disc_nodes = 0;
4863
4864 ndlp = lpfc_findnode_did(vport, NameServer_DID);
4865 if (ndlp && NLP_CHK_NODE_ACT(ndlp)
4866 && ndlp->nlp_state == NLP_STE_UNMAPPED_NODE) {
4867 /* Good ndlp, issue CT Request to NameServer */
4868 if (lpfc_ns_cmd(vport, SLI_CTNS_GID_FT, 0, 0) == 0)
4869 /* Wait for NameServer query cmpl before we can
4870 continue */
4871 return 1;
4872 } else {
4873 /* If login to NameServer does not exist, issue one */
4874 /* Good status, issue PLOGI to NameServer */
4875 ndlp = lpfc_findnode_did(vport, NameServer_DID);
4876 if (ndlp && NLP_CHK_NODE_ACT(ndlp))
4877 /* Wait for NameServer login cmpl before we can
4878 continue */
4879 return 1;
4880
4881 if (ndlp) {
4882 ndlp = lpfc_enable_node(vport, ndlp,
4883 NLP_STE_PLOGI_ISSUE);
4884 if (!ndlp) {
4885 lpfc_els_flush_rscn(vport);
4886 return 0;
4887 }
4888 ndlp->nlp_prev_state = NLP_STE_UNUSED_NODE;
4889 } else {
4890 ndlp = mempool_alloc(phba->nlp_mem_pool, GFP_KERNEL);
4891 if (!ndlp) {
4892 lpfc_els_flush_rscn(vport);
4893 return 0;
4894 }
4895 lpfc_nlp_init(vport, ndlp, NameServer_DID);
4896 ndlp->nlp_prev_state = ndlp->nlp_state;
4897 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
4898 }
4899 ndlp->nlp_type |= NLP_FABRIC;
4900 lpfc_issue_els_plogi(vport, NameServer_DID, 0);
4901 /* Wait for NameServer login cmpl before we can
4902 * continue
4903 */
4904 return 1;
4905 }
4906
4907 lpfc_els_flush_rscn(vport);
4908 return 0;
4909 }
4910
4911 /**
4912 * lpfc_els_rcv_flogi - Process an unsolicited flogi iocb
4913 * @vport: pointer to a host virtual N_Port data structure.
4914 * @cmdiocb: pointer to lpfc command iocb data structure.
4915 * @ndlp: pointer to a node-list data structure.
4916 *
4917 * This routine processes Fabric Login (FLOGI) IOCB received as an ELS
4918 * unsolicited event. An unsolicited FLOGI can be received in a point-to-
4919 * point topology. As an unsolicited FLOGI should not be received in a loop
4920 * mode, any unsolicited FLOGI received in loop mode shall be ignored. The
4921 * lpfc_check_sparm() routine is invoked to check the parameters in the
4922 * unsolicited FLOGI. If parameters validation failed, the routine
4923 * lpfc_els_rsp_reject() shall be called with reject reason code set to
4924 * LSEXP_SPARM_OPTIONS to reject the FLOGI. Otherwise, the Port WWN in the
4925 * FLOGI shall be compared with the Port WWN of the @vport to determine who
4926 * will initiate PLOGI. The higher lexicographical value party shall has
4927 * higher priority (as the winning port) and will initiate PLOGI and
4928 * communicate Port_IDs (Addresses) for both nodes in PLOGI. The result
4929 * of this will be marked in the @vport fc_flag field with FC_PT2PT_PLOGI
4930 * and then the lpfc_els_rsp_acc() routine is invoked to accept the FLOGI.
4931 *
4932 * Return code
4933 * 0 - Successfully processed the unsolicited flogi
4934 * 1 - Failed to process the unsolicited flogi
4935 **/
4936 static int
4937 lpfc_els_rcv_flogi(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
4938 struct lpfc_nodelist *ndlp)
4939 {
4940 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4941 struct lpfc_hba *phba = vport->phba;
4942 struct lpfc_dmabuf *pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
4943 uint32_t *lp = (uint32_t *) pcmd->virt;
4944 IOCB_t *icmd = &cmdiocb->iocb;
4945 struct serv_parm *sp;
4946 LPFC_MBOXQ_t *mbox;
4947 struct ls_rjt stat;
4948 uint32_t cmd, did;
4949 int rc;
4950
4951 cmd = *lp++;
4952 sp = (struct serv_parm *) lp;
4953
4954 /* FLOGI received */
4955
4956 lpfc_set_disctmo(vport);
4957
4958 if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
4959 /* We should never receive a FLOGI in loop mode, ignore it */
4960 did = icmd->un.elsreq64.remoteID;
4961
4962 /* An FLOGI ELS command <elsCmd> was received from DID <did> in
4963 Loop Mode */
4964 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
4965 "0113 An FLOGI ELS command x%x was "
4966 "received from DID x%x in Loop Mode\n",
4967 cmd, did);
4968 return 1;
4969 }
4970
4971 if ((lpfc_check_sparm(vport, ndlp, sp, CLASS3, 1))) {
4972 /* For a FLOGI we accept, then if our portname is greater
4973 * then the remote portname we initiate Nport login.
4974 */
4975
4976 rc = memcmp(&vport->fc_portname, &sp->portName,
4977 sizeof(struct lpfc_name));
4978
4979 if (!rc) {
4980 if (phba->sli_rev < LPFC_SLI_REV4) {
4981 mbox = mempool_alloc(phba->mbox_mem_pool,
4982 GFP_KERNEL);
4983 if (!mbox)
4984 return 1;
4985 lpfc_linkdown(phba);
4986 lpfc_init_link(phba, mbox,
4987 phba->cfg_topology,
4988 phba->cfg_link_speed);
4989 mbox->u.mb.un.varInitLnk.lipsr_AL_PA = 0;
4990 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
4991 mbox->vport = vport;
4992 rc = lpfc_sli_issue_mbox(phba, mbox,
4993 MBX_NOWAIT);
4994 lpfc_set_loopback_flag(phba);
4995 if (rc == MBX_NOT_FINISHED)
4996 mempool_free(mbox, phba->mbox_mem_pool);
4997 return 1;
4998 } else {
4999 /* abort the flogi coming back to ourselves
5000 * due to external loopback on the port.
5001 */
5002 lpfc_els_abort_flogi(phba);
5003 return 0;
5004 }
5005 } else if (rc > 0) { /* greater than */
5006 spin_lock_irq(shost->host_lock);
5007 vport->fc_flag |= FC_PT2PT_PLOGI;
5008 spin_unlock_irq(shost->host_lock);
5009
5010 /* If we have the high WWPN we can assign our own
5011 * myDID; otherwise, we have to WAIT for a PLOGI
5012 * from the remote NPort to find out what it
5013 * will be.
5014 */
5015 vport->fc_myDID = PT2PT_LocalID;
5016 }
5017
5018 /*
5019 * The vport state should go to LPFC_FLOGI only
5020 * AFTER we issue a FLOGI, not receive one.
5021 */
5022 spin_lock_irq(shost->host_lock);
5023 vport->fc_flag |= FC_PT2PT;
5024 vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP);
5025 spin_unlock_irq(shost->host_lock);
5026
5027 /*
5028 * We temporarily set fc_myDID to make it look like we are
5029 * a Fabric. This is done just so we end up with the right
5030 * did / sid on the FLOGI ACC rsp.
5031 */
5032 did = vport->fc_myDID;
5033 vport->fc_myDID = Fabric_DID;
5034
5035 } else {
5036 /* Reject this request because invalid parameters */
5037 stat.un.b.lsRjtRsvd0 = 0;
5038 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
5039 stat.un.b.lsRjtRsnCodeExp = LSEXP_SPARM_OPTIONS;
5040 stat.un.b.vendorUnique = 0;
5041
5042 /*
5043 * We temporarily set fc_myDID to make it look like we are
5044 * a Fabric. This is done just so we end up with the right
5045 * did / sid on the FLOGI LS_RJT rsp.
5046 */
5047 did = vport->fc_myDID;
5048 vport->fc_myDID = Fabric_DID;
5049
5050 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
5051 NULL);
5052
5053 /* Now lets put fc_myDID back to what its supposed to be */
5054 vport->fc_myDID = did;
5055
5056 return 1;
5057 }
5058
5059 /* Send back ACC */
5060 lpfc_els_rsp_acc(vport, ELS_CMD_PLOGI, cmdiocb, ndlp, NULL);
5061
5062 /* Now lets put fc_myDID back to what its supposed to be */
5063 vport->fc_myDID = did;
5064
5065 if (!(vport->fc_flag & FC_PT2PT_PLOGI)) {
5066
5067 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
5068 if (!mbox)
5069 goto fail;
5070
5071 lpfc_config_link(phba, mbox);
5072
5073 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
5074 mbox->vport = vport;
5075 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
5076 if (rc == MBX_NOT_FINISHED) {
5077 mempool_free(mbox, phba->mbox_mem_pool);
5078 goto fail;
5079 }
5080 }
5081
5082 return 0;
5083 fail:
5084 return 1;
5085 }
5086
5087 /**
5088 * lpfc_els_rcv_rnid - Process an unsolicited rnid iocb
5089 * @vport: pointer to a host virtual N_Port data structure.
5090 * @cmdiocb: pointer to lpfc command iocb data structure.
5091 * @ndlp: pointer to a node-list data structure.
5092 *
5093 * This routine processes Request Node Identification Data (RNID) IOCB
5094 * received as an ELS unsolicited event. Only when the RNID specified format
5095 * 0x0 or 0xDF (Topology Discovery Specific Node Identification Data)
5096 * present, this routine will invoke the lpfc_els_rsp_rnid_acc() routine to
5097 * Accept (ACC) the RNID ELS command. All the other RNID formats are
5098 * rejected by invoking the lpfc_els_rsp_reject() routine.
5099 *
5100 * Return code
5101 * 0 - Successfully processed rnid iocb (currently always return 0)
5102 **/
5103 static int
5104 lpfc_els_rcv_rnid(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
5105 struct lpfc_nodelist *ndlp)
5106 {
5107 struct lpfc_dmabuf *pcmd;
5108 uint32_t *lp;
5109 IOCB_t *icmd;
5110 RNID *rn;
5111 struct ls_rjt stat;
5112 uint32_t cmd, did;
5113
5114 icmd = &cmdiocb->iocb;
5115 did = icmd->un.elsreq64.remoteID;
5116 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
5117 lp = (uint32_t *) pcmd->virt;
5118
5119 cmd = *lp++;
5120 rn = (RNID *) lp;
5121
5122 /* RNID received */
5123
5124 switch (rn->Format) {
5125 case 0:
5126 case RNID_TOPOLOGY_DISC:
5127 /* Send back ACC */
5128 lpfc_els_rsp_rnid_acc(vport, rn->Format, cmdiocb, ndlp);
5129 break;
5130 default:
5131 /* Reject this request because format not supported */
5132 stat.un.b.lsRjtRsvd0 = 0;
5133 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
5134 stat.un.b.lsRjtRsnCodeExp = LSEXP_CANT_GIVE_DATA;
5135 stat.un.b.vendorUnique = 0;
5136 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
5137 NULL);
5138 }
5139 return 0;
5140 }
5141
5142 /**
5143 * lpfc_els_rcv_echo - Process an unsolicited echo iocb
5144 * @vport: pointer to a host virtual N_Port data structure.
5145 * @cmdiocb: pointer to lpfc command iocb data structure.
5146 * @ndlp: pointer to a node-list data structure.
5147 *
5148 * Return code
5149 * 0 - Successfully processed echo iocb (currently always return 0)
5150 **/
5151 static int
5152 lpfc_els_rcv_echo(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
5153 struct lpfc_nodelist *ndlp)
5154 {
5155 uint8_t *pcmd;
5156
5157 pcmd = (uint8_t *) (((struct lpfc_dmabuf *) cmdiocb->context2)->virt);
5158
5159 /* skip over first word of echo command to find echo data */
5160 pcmd += sizeof(uint32_t);
5161
5162 lpfc_els_rsp_echo_acc(vport, pcmd, cmdiocb, ndlp);
5163 return 0;
5164 }
5165
5166 /**
5167 * lpfc_els_rcv_lirr - Process an unsolicited lirr iocb
5168 * @vport: pointer to a host virtual N_Port data structure.
5169 * @cmdiocb: pointer to lpfc command iocb data structure.
5170 * @ndlp: pointer to a node-list data structure.
5171 *
5172 * This routine processes a Link Incident Report Registration(LIRR) IOCB
5173 * received as an ELS unsolicited event. Currently, this function just invokes
5174 * the lpfc_els_rsp_reject() routine to reject the LIRR IOCB unconditionally.
5175 *
5176 * Return code
5177 * 0 - Successfully processed lirr iocb (currently always return 0)
5178 **/
5179 static int
5180 lpfc_els_rcv_lirr(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
5181 struct lpfc_nodelist *ndlp)
5182 {
5183 struct ls_rjt stat;
5184
5185 /* For now, unconditionally reject this command */
5186 stat.un.b.lsRjtRsvd0 = 0;
5187 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
5188 stat.un.b.lsRjtRsnCodeExp = LSEXP_CANT_GIVE_DATA;
5189 stat.un.b.vendorUnique = 0;
5190 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
5191 return 0;
5192 }
5193
5194 /**
5195 * lpfc_els_rcv_rrq - Process an unsolicited rrq iocb
5196 * @vport: pointer to a host virtual N_Port data structure.
5197 * @cmdiocb: pointer to lpfc command iocb data structure.
5198 * @ndlp: pointer to a node-list data structure.
5199 *
5200 * This routine processes a Reinstate Recovery Qualifier (RRQ) IOCB
5201 * received as an ELS unsolicited event. A request to RRQ shall only
5202 * be accepted if the Originator Nx_Port N_Port_ID or the Responder
5203 * Nx_Port N_Port_ID of the target Exchange is the same as the
5204 * N_Port_ID of the Nx_Port that makes the request. If the RRQ is
5205 * not accepted, an LS_RJT with reason code "Unable to perform
5206 * command request" and reason code explanation "Invalid Originator
5207 * S_ID" shall be returned. For now, we just unconditionally accept
5208 * RRQ from the target.
5209 **/
5210 static void
5211 lpfc_els_rcv_rrq(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
5212 struct lpfc_nodelist *ndlp)
5213 {
5214 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
5215 if (vport->phba->sli_rev == LPFC_SLI_REV4)
5216 lpfc_els_clear_rrq(vport, cmdiocb, ndlp);
5217 }
5218
5219 /**
5220 * lpfc_els_rsp_rls_acc - Completion callbk func for MBX_READ_LNK_STAT mbox cmd
5221 * @phba: pointer to lpfc hba data structure.
5222 * @pmb: pointer to the driver internal queue element for mailbox command.
5223 *
5224 * This routine is the completion callback function for the MBX_READ_LNK_STAT
5225 * mailbox command. This callback function is to actually send the Accept
5226 * (ACC) response to a Read Port Status (RPS) unsolicited IOCB event. It
5227 * collects the link statistics from the completion of the MBX_READ_LNK_STAT
5228 * mailbox command, constructs the RPS response with the link statistics
5229 * collected, and then invokes the lpfc_sli_issue_iocb() routine to send ACC
5230 * response to the RPS.
5231 *
5232 * Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp
5233 * will be incremented by 1 for holding the ndlp and the reference to ndlp
5234 * will be stored into the context1 field of the IOCB for the completion
5235 * callback function to the RPS Accept Response ELS IOCB command.
5236 *
5237 **/
5238 static void
5239 lpfc_els_rsp_rls_acc(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
5240 {
5241 MAILBOX_t *mb;
5242 IOCB_t *icmd;
5243 struct RLS_RSP *rls_rsp;
5244 uint8_t *pcmd;
5245 struct lpfc_iocbq *elsiocb;
5246 struct lpfc_nodelist *ndlp;
5247 uint16_t oxid;
5248 uint16_t rxid;
5249 uint32_t cmdsize;
5250
5251 mb = &pmb->u.mb;
5252
5253 ndlp = (struct lpfc_nodelist *) pmb->context2;
5254 rxid = (uint16_t) ((unsigned long)(pmb->context1) & 0xffff);
5255 oxid = (uint16_t) (((unsigned long)(pmb->context1) >> 16) & 0xffff);
5256 pmb->context1 = NULL;
5257 pmb->context2 = NULL;
5258
5259 if (mb->mbxStatus) {
5260 mempool_free(pmb, phba->mbox_mem_pool);
5261 return;
5262 }
5263
5264 cmdsize = sizeof(struct RLS_RSP) + sizeof(uint32_t);
5265 elsiocb = lpfc_prep_els_iocb(phba->pport, 0, cmdsize,
5266 lpfc_max_els_tries, ndlp,
5267 ndlp->nlp_DID, ELS_CMD_ACC);
5268
5269 /* Decrement the ndlp reference count from previous mbox command */
5270 lpfc_nlp_put(ndlp);
5271
5272 if (!elsiocb) {
5273 mempool_free(pmb, phba->mbox_mem_pool);
5274 return;
5275 }
5276
5277 icmd = &elsiocb->iocb;
5278 icmd->ulpContext = rxid;
5279 icmd->unsli3.rcvsli3.ox_id = oxid;
5280
5281 pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
5282 *((uint32_t *) (pcmd)) = ELS_CMD_ACC;
5283 pcmd += sizeof(uint32_t); /* Skip past command */
5284 rls_rsp = (struct RLS_RSP *)pcmd;
5285
5286 rls_rsp->linkFailureCnt = cpu_to_be32(mb->un.varRdLnk.linkFailureCnt);
5287 rls_rsp->lossSyncCnt = cpu_to_be32(mb->un.varRdLnk.lossSyncCnt);
5288 rls_rsp->lossSignalCnt = cpu_to_be32(mb->un.varRdLnk.lossSignalCnt);
5289 rls_rsp->primSeqErrCnt = cpu_to_be32(mb->un.varRdLnk.primSeqErrCnt);
5290 rls_rsp->invalidXmitWord = cpu_to_be32(mb->un.varRdLnk.invalidXmitWord);
5291 rls_rsp->crcCnt = cpu_to_be32(mb->un.varRdLnk.crcCnt);
5292 mempool_free(pmb, phba->mbox_mem_pool);
5293 /* Xmit ELS RLS ACC response tag <ulpIoTag> */
5294 lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_ELS,
5295 "2874 Xmit ELS RLS ACC response tag x%x xri x%x, "
5296 "did x%x, nlp_flag x%x, nlp_state x%x, rpi x%x\n",
5297 elsiocb->iotag, elsiocb->iocb.ulpContext,
5298 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
5299 ndlp->nlp_rpi);
5300 elsiocb->iocb_cmpl = lpfc_cmpl_els_rsp;
5301 phba->fc_stat.elsXmitACC++;
5302 if (lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0) == IOCB_ERROR)
5303 lpfc_els_free_iocb(phba, elsiocb);
5304 }
5305
5306 /**
5307 * lpfc_els_rsp_rps_acc - Completion callbk func for MBX_READ_LNK_STAT mbox cmd
5308 * @phba: pointer to lpfc hba data structure.
5309 * @pmb: pointer to the driver internal queue element for mailbox command.
5310 *
5311 * This routine is the completion callback function for the MBX_READ_LNK_STAT
5312 * mailbox command. This callback function is to actually send the Accept
5313 * (ACC) response to a Read Port Status (RPS) unsolicited IOCB event. It
5314 * collects the link statistics from the completion of the MBX_READ_LNK_STAT
5315 * mailbox command, constructs the RPS response with the link statistics
5316 * collected, and then invokes the lpfc_sli_issue_iocb() routine to send ACC
5317 * response to the RPS.
5318 *
5319 * Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp
5320 * will be incremented by 1 for holding the ndlp and the reference to ndlp
5321 * will be stored into the context1 field of the IOCB for the completion
5322 * callback function to the RPS Accept Response ELS IOCB command.
5323 *
5324 **/
5325 static void
5326 lpfc_els_rsp_rps_acc(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
5327 {
5328 MAILBOX_t *mb;
5329 IOCB_t *icmd;
5330 RPS_RSP *rps_rsp;
5331 uint8_t *pcmd;
5332 struct lpfc_iocbq *elsiocb;
5333 struct lpfc_nodelist *ndlp;
5334 uint16_t status;
5335 uint16_t oxid;
5336 uint16_t rxid;
5337 uint32_t cmdsize;
5338
5339 mb = &pmb->u.mb;
5340
5341 ndlp = (struct lpfc_nodelist *) pmb->context2;
5342 rxid = (uint16_t) ((unsigned long)(pmb->context1) & 0xffff);
5343 oxid = (uint16_t) (((unsigned long)(pmb->context1) >> 16) & 0xffff);
5344 pmb->context1 = NULL;
5345 pmb->context2 = NULL;
5346
5347 if (mb->mbxStatus) {
5348 mempool_free(pmb, phba->mbox_mem_pool);
5349 return;
5350 }
5351
5352 cmdsize = sizeof(RPS_RSP) + sizeof(uint32_t);
5353 mempool_free(pmb, phba->mbox_mem_pool);
5354 elsiocb = lpfc_prep_els_iocb(phba->pport, 0, cmdsize,
5355 lpfc_max_els_tries, ndlp,
5356 ndlp->nlp_DID, ELS_CMD_ACC);
5357
5358 /* Decrement the ndlp reference count from previous mbox command */
5359 lpfc_nlp_put(ndlp);
5360
5361 if (!elsiocb)
5362 return;
5363
5364 icmd = &elsiocb->iocb;
5365 icmd->ulpContext = rxid;
5366 icmd->unsli3.rcvsli3.ox_id = oxid;
5367
5368 pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
5369 *((uint32_t *) (pcmd)) = ELS_CMD_ACC;
5370 pcmd += sizeof(uint32_t); /* Skip past command */
5371 rps_rsp = (RPS_RSP *)pcmd;
5372
5373 if (phba->fc_topology != LPFC_TOPOLOGY_LOOP)
5374 status = 0x10;
5375 else
5376 status = 0x8;
5377 if (phba->pport->fc_flag & FC_FABRIC)
5378 status |= 0x4;
5379
5380 rps_rsp->rsvd1 = 0;
5381 rps_rsp->portStatus = cpu_to_be16(status);
5382 rps_rsp->linkFailureCnt = cpu_to_be32(mb->un.varRdLnk.linkFailureCnt);
5383 rps_rsp->lossSyncCnt = cpu_to_be32(mb->un.varRdLnk.lossSyncCnt);
5384 rps_rsp->lossSignalCnt = cpu_to_be32(mb->un.varRdLnk.lossSignalCnt);
5385 rps_rsp->primSeqErrCnt = cpu_to_be32(mb->un.varRdLnk.primSeqErrCnt);
5386 rps_rsp->invalidXmitWord = cpu_to_be32(mb->un.varRdLnk.invalidXmitWord);
5387 rps_rsp->crcCnt = cpu_to_be32(mb->un.varRdLnk.crcCnt);
5388 /* Xmit ELS RPS ACC response tag <ulpIoTag> */
5389 lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_ELS,
5390 "0118 Xmit ELS RPS ACC response tag x%x xri x%x, "
5391 "did x%x, nlp_flag x%x, nlp_state x%x, rpi x%x\n",
5392 elsiocb->iotag, elsiocb->iocb.ulpContext,
5393 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
5394 ndlp->nlp_rpi);
5395 elsiocb->iocb_cmpl = lpfc_cmpl_els_rsp;
5396 phba->fc_stat.elsXmitACC++;
5397 if (lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0) == IOCB_ERROR)
5398 lpfc_els_free_iocb(phba, elsiocb);
5399 return;
5400 }
5401
5402 /**
5403 * lpfc_els_rcv_rls - Process an unsolicited rls iocb
5404 * @vport: pointer to a host virtual N_Port data structure.
5405 * @cmdiocb: pointer to lpfc command iocb data structure.
5406 * @ndlp: pointer to a node-list data structure.
5407 *
5408 * This routine processes Read Port Status (RPL) IOCB received as an
5409 * ELS unsolicited event. It first checks the remote port state. If the
5410 * remote port is not in NLP_STE_UNMAPPED_NODE state or NLP_STE_MAPPED_NODE
5411 * state, it invokes the lpfc_els_rsl_reject() routine to send the reject
5412 * response. Otherwise, it issue the MBX_READ_LNK_STAT mailbox command
5413 * for reading the HBA link statistics. It is for the callback function,
5414 * lpfc_els_rsp_rls_acc(), set to the MBX_READ_LNK_STAT mailbox command
5415 * to actually sending out RPL Accept (ACC) response.
5416 *
5417 * Return codes
5418 * 0 - Successfully processed rls iocb (currently always return 0)
5419 **/
5420 static int
5421 lpfc_els_rcv_rls(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
5422 struct lpfc_nodelist *ndlp)
5423 {
5424 struct lpfc_hba *phba = vport->phba;
5425 LPFC_MBOXQ_t *mbox;
5426 struct lpfc_dmabuf *pcmd;
5427 struct ls_rjt stat;
5428
5429 if ((ndlp->nlp_state != NLP_STE_UNMAPPED_NODE) &&
5430 (ndlp->nlp_state != NLP_STE_MAPPED_NODE))
5431 /* reject the unsolicited RPS request and done with it */
5432 goto reject_out;
5433
5434 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
5435
5436 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_ATOMIC);
5437 if (mbox) {
5438 lpfc_read_lnk_stat(phba, mbox);
5439 mbox->context1 = (void *)((unsigned long)
5440 ((cmdiocb->iocb.unsli3.rcvsli3.ox_id << 16) |
5441 cmdiocb->iocb.ulpContext)); /* rx_id */
5442 mbox->context2 = lpfc_nlp_get(ndlp);
5443 mbox->vport = vport;
5444 mbox->mbox_cmpl = lpfc_els_rsp_rls_acc;
5445 if (lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT)
5446 != MBX_NOT_FINISHED)
5447 /* Mbox completion will send ELS Response */
5448 return 0;
5449 /* Decrement reference count used for the failed mbox
5450 * command.
5451 */
5452 lpfc_nlp_put(ndlp);
5453 mempool_free(mbox, phba->mbox_mem_pool);
5454 }
5455 reject_out:
5456 /* issue rejection response */
5457 stat.un.b.lsRjtRsvd0 = 0;
5458 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
5459 stat.un.b.lsRjtRsnCodeExp = LSEXP_CANT_GIVE_DATA;
5460 stat.un.b.vendorUnique = 0;
5461 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
5462 return 0;
5463 }
5464
5465 /**
5466 * lpfc_els_rcv_rtv - Process an unsolicited rtv iocb
5467 * @vport: pointer to a host virtual N_Port data structure.
5468 * @cmdiocb: pointer to lpfc command iocb data structure.
5469 * @ndlp: pointer to a node-list data structure.
5470 *
5471 * This routine processes Read Timout Value (RTV) IOCB received as an
5472 * ELS unsolicited event. It first checks the remote port state. If the
5473 * remote port is not in NLP_STE_UNMAPPED_NODE state or NLP_STE_MAPPED_NODE
5474 * state, it invokes the lpfc_els_rsl_reject() routine to send the reject
5475 * response. Otherwise, it sends the Accept(ACC) response to a Read Timeout
5476 * Value (RTV) unsolicited IOCB event.
5477 *
5478 * Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp
5479 * will be incremented by 1 for holding the ndlp and the reference to ndlp
5480 * will be stored into the context1 field of the IOCB for the completion
5481 * callback function to the RPS Accept Response ELS IOCB command.
5482 *
5483 * Return codes
5484 * 0 - Successfully processed rtv iocb (currently always return 0)
5485 **/
5486 static int
5487 lpfc_els_rcv_rtv(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
5488 struct lpfc_nodelist *ndlp)
5489 {
5490 struct lpfc_hba *phba = vport->phba;
5491 struct ls_rjt stat;
5492 struct RTV_RSP *rtv_rsp;
5493 uint8_t *pcmd;
5494 struct lpfc_iocbq *elsiocb;
5495 uint32_t cmdsize;
5496
5497
5498 if ((ndlp->nlp_state != NLP_STE_UNMAPPED_NODE) &&
5499 (ndlp->nlp_state != NLP_STE_MAPPED_NODE))
5500 /* reject the unsolicited RPS request and done with it */
5501 goto reject_out;
5502
5503 cmdsize = sizeof(struct RTV_RSP) + sizeof(uint32_t);
5504 elsiocb = lpfc_prep_els_iocb(phba->pport, 0, cmdsize,
5505 lpfc_max_els_tries, ndlp,
5506 ndlp->nlp_DID, ELS_CMD_ACC);
5507
5508 if (!elsiocb)
5509 return 1;
5510
5511 pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
5512 *((uint32_t *) (pcmd)) = ELS_CMD_ACC;
5513 pcmd += sizeof(uint32_t); /* Skip past command */
5514
5515 /* use the command's xri in the response */
5516 elsiocb->iocb.ulpContext = cmdiocb->iocb.ulpContext; /* Xri / rx_id */
5517 elsiocb->iocb.unsli3.rcvsli3.ox_id = cmdiocb->iocb.unsli3.rcvsli3.ox_id;
5518
5519 rtv_rsp = (struct RTV_RSP *)pcmd;
5520
5521 /* populate RTV payload */
5522 rtv_rsp->ratov = cpu_to_be32(phba->fc_ratov * 1000); /* report msecs */
5523 rtv_rsp->edtov = cpu_to_be32(phba->fc_edtov);
5524 bf_set(qtov_edtovres, rtv_rsp, phba->fc_edtovResol ? 1 : 0);
5525 bf_set(qtov_rttov, rtv_rsp, 0); /* Field is for FC ONLY */
5526 rtv_rsp->qtov = cpu_to_be32(rtv_rsp->qtov);
5527
5528 /* Xmit ELS RLS ACC response tag <ulpIoTag> */
5529 lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_ELS,
5530 "2875 Xmit ELS RTV ACC response tag x%x xri x%x, "
5531 "did x%x, nlp_flag x%x, nlp_state x%x, rpi x%x, "
5532 "Data: x%x x%x x%x\n",
5533 elsiocb->iotag, elsiocb->iocb.ulpContext,
5534 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
5535 ndlp->nlp_rpi,
5536 rtv_rsp->ratov, rtv_rsp->edtov, rtv_rsp->qtov);
5537 elsiocb->iocb_cmpl = lpfc_cmpl_els_rsp;
5538 phba->fc_stat.elsXmitACC++;
5539 if (lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0) == IOCB_ERROR)
5540 lpfc_els_free_iocb(phba, elsiocb);
5541 return 0;
5542
5543 reject_out:
5544 /* issue rejection response */
5545 stat.un.b.lsRjtRsvd0 = 0;
5546 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
5547 stat.un.b.lsRjtRsnCodeExp = LSEXP_CANT_GIVE_DATA;
5548 stat.un.b.vendorUnique = 0;
5549 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
5550 return 0;
5551 }
5552
5553 /* lpfc_els_rcv_rps - Process an unsolicited rps iocb
5554 * @vport: pointer to a host virtual N_Port data structure.
5555 * @cmdiocb: pointer to lpfc command iocb data structure.
5556 * @ndlp: pointer to a node-list data structure.
5557 *
5558 * This routine processes Read Port Status (RPS) IOCB received as an
5559 * ELS unsolicited event. It first checks the remote port state. If the
5560 * remote port is not in NLP_STE_UNMAPPED_NODE state or NLP_STE_MAPPED_NODE
5561 * state, it invokes the lpfc_els_rsp_reject() routine to send the reject
5562 * response. Otherwise, it issue the MBX_READ_LNK_STAT mailbox command
5563 * for reading the HBA link statistics. It is for the callback function,
5564 * lpfc_els_rsp_rps_acc(), set to the MBX_READ_LNK_STAT mailbox command
5565 * to actually sending out RPS Accept (ACC) response.
5566 *
5567 * Return codes
5568 * 0 - Successfully processed rps iocb (currently always return 0)
5569 **/
5570 static int
5571 lpfc_els_rcv_rps(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
5572 struct lpfc_nodelist *ndlp)
5573 {
5574 struct lpfc_hba *phba = vport->phba;
5575 uint32_t *lp;
5576 uint8_t flag;
5577 LPFC_MBOXQ_t *mbox;
5578 struct lpfc_dmabuf *pcmd;
5579 RPS *rps;
5580 struct ls_rjt stat;
5581
5582 if ((ndlp->nlp_state != NLP_STE_UNMAPPED_NODE) &&
5583 (ndlp->nlp_state != NLP_STE_MAPPED_NODE))
5584 /* reject the unsolicited RPS request and done with it */
5585 goto reject_out;
5586
5587 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
5588 lp = (uint32_t *) pcmd->virt;
5589 flag = (be32_to_cpu(*lp++) & 0xf);
5590 rps = (RPS *) lp;
5591
5592 if ((flag == 0) ||
5593 ((flag == 1) && (be32_to_cpu(rps->un.portNum) == 0)) ||
5594 ((flag == 2) && (memcmp(&rps->un.portName, &vport->fc_portname,
5595 sizeof(struct lpfc_name)) == 0))) {
5596
5597 printk("Fix me....\n");
5598 dump_stack();
5599 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_ATOMIC);
5600 if (mbox) {
5601 lpfc_read_lnk_stat(phba, mbox);
5602 mbox->context1 = (void *)((unsigned long)
5603 ((cmdiocb->iocb.unsli3.rcvsli3.ox_id << 16) |
5604 cmdiocb->iocb.ulpContext)); /* rx_id */
5605 mbox->context2 = lpfc_nlp_get(ndlp);
5606 mbox->vport = vport;
5607 mbox->mbox_cmpl = lpfc_els_rsp_rps_acc;
5608 if (lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT)
5609 != MBX_NOT_FINISHED)
5610 /* Mbox completion will send ELS Response */
5611 return 0;
5612 /* Decrement reference count used for the failed mbox
5613 * command.
5614 */
5615 lpfc_nlp_put(ndlp);
5616 mempool_free(mbox, phba->mbox_mem_pool);
5617 }
5618 }
5619
5620 reject_out:
5621 /* issue rejection response */
5622 stat.un.b.lsRjtRsvd0 = 0;
5623 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
5624 stat.un.b.lsRjtRsnCodeExp = LSEXP_CANT_GIVE_DATA;
5625 stat.un.b.vendorUnique = 0;
5626 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
5627 return 0;
5628 }
5629
5630 /* lpfc_issue_els_rrq - Process an unsolicited rps iocb
5631 * @vport: pointer to a host virtual N_Port data structure.
5632 * @ndlp: pointer to a node-list data structure.
5633 * @did: DID of the target.
5634 * @rrq: Pointer to the rrq struct.
5635 *
5636 * Build a ELS RRQ command and send it to the target. If the issue_iocb is
5637 * Successful the the completion handler will clear the RRQ.
5638 *
5639 * Return codes
5640 * 0 - Successfully sent rrq els iocb.
5641 * 1 - Failed to send rrq els iocb.
5642 **/
5643 static int
5644 lpfc_issue_els_rrq(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
5645 uint32_t did, struct lpfc_node_rrq *rrq)
5646 {
5647 struct lpfc_hba *phba = vport->phba;
5648 struct RRQ *els_rrq;
5649 IOCB_t *icmd;
5650 struct lpfc_iocbq *elsiocb;
5651 uint8_t *pcmd;
5652 uint16_t cmdsize;
5653 int ret;
5654
5655
5656 if (ndlp != rrq->ndlp)
5657 ndlp = rrq->ndlp;
5658 if (!ndlp || !NLP_CHK_NODE_ACT(ndlp))
5659 return 1;
5660
5661 /* If ndlp is not NULL, we will bump the reference count on it */
5662 cmdsize = (sizeof(uint32_t) + sizeof(struct RRQ));
5663 elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, 0, ndlp, did,
5664 ELS_CMD_RRQ);
5665 if (!elsiocb)
5666 return 1;
5667
5668 icmd = &elsiocb->iocb;
5669 pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
5670
5671 /* For RRQ request, remainder of payload is Exchange IDs */
5672 *((uint32_t *) (pcmd)) = ELS_CMD_RRQ;
5673 pcmd += sizeof(uint32_t);
5674 els_rrq = (struct RRQ *) pcmd;
5675
5676 bf_set(rrq_oxid, els_rrq, phba->sli4_hba.xri_ids[rrq->xritag]);
5677 bf_set(rrq_rxid, els_rrq, rrq->rxid);
5678 bf_set(rrq_did, els_rrq, vport->fc_myDID);
5679 els_rrq->rrq = cpu_to_be32(els_rrq->rrq);
5680 els_rrq->rrq_exchg = cpu_to_be32(els_rrq->rrq_exchg);
5681
5682
5683 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
5684 "Issue RRQ: did:x%x",
5685 did, rrq->xritag, rrq->rxid);
5686 elsiocb->context_un.rrq = rrq;
5687 elsiocb->iocb_cmpl = lpfc_cmpl_els_rrq;
5688 ret = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
5689
5690 if (ret == IOCB_ERROR) {
5691 lpfc_els_free_iocb(phba, elsiocb);
5692 return 1;
5693 }
5694 return 0;
5695 }
5696
5697 /**
5698 * lpfc_send_rrq - Sends ELS RRQ if needed.
5699 * @phba: pointer to lpfc hba data structure.
5700 * @rrq: pointer to the active rrq.
5701 *
5702 * This routine will call the lpfc_issue_els_rrq if the rrq is
5703 * still active for the xri. If this function returns a failure then
5704 * the caller needs to clean up the RRQ by calling lpfc_clr_active_rrq.
5705 *
5706 * Returns 0 Success.
5707 * 1 Failure.
5708 **/
5709 int
5710 lpfc_send_rrq(struct lpfc_hba *phba, struct lpfc_node_rrq *rrq)
5711 {
5712 struct lpfc_nodelist *ndlp = lpfc_findnode_did(rrq->vport,
5713 rrq->nlp_DID);
5714 if (lpfc_test_rrq_active(phba, ndlp, rrq->xritag))
5715 return lpfc_issue_els_rrq(rrq->vport, ndlp,
5716 rrq->nlp_DID, rrq);
5717 else
5718 return 1;
5719 }
5720
5721 /**
5722 * lpfc_els_rsp_rpl_acc - Issue an accept rpl els command
5723 * @vport: pointer to a host virtual N_Port data structure.
5724 * @cmdsize: size of the ELS command.
5725 * @oldiocb: pointer to the original lpfc command iocb data structure.
5726 * @ndlp: pointer to a node-list data structure.
5727 *
5728 * This routine issuees an Accept (ACC) Read Port List (RPL) ELS command.
5729 * It is to be called by the lpfc_els_rcv_rpl() routine to accept the RPL.
5730 *
5731 * Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp
5732 * will be incremented by 1 for holding the ndlp and the reference to ndlp
5733 * will be stored into the context1 field of the IOCB for the completion
5734 * callback function to the RPL Accept Response ELS command.
5735 *
5736 * Return code
5737 * 0 - Successfully issued ACC RPL ELS command
5738 * 1 - Failed to issue ACC RPL ELS command
5739 **/
5740 static int
5741 lpfc_els_rsp_rpl_acc(struct lpfc_vport *vport, uint16_t cmdsize,
5742 struct lpfc_iocbq *oldiocb, struct lpfc_nodelist *ndlp)
5743 {
5744 struct lpfc_hba *phba = vport->phba;
5745 IOCB_t *icmd, *oldcmd;
5746 RPL_RSP rpl_rsp;
5747 struct lpfc_iocbq *elsiocb;
5748 uint8_t *pcmd;
5749
5750 elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry, ndlp,
5751 ndlp->nlp_DID, ELS_CMD_ACC);
5752
5753 if (!elsiocb)
5754 return 1;
5755
5756 icmd = &elsiocb->iocb;
5757 oldcmd = &oldiocb->iocb;
5758 icmd->ulpContext = oldcmd->ulpContext; /* Xri / rx_id */
5759 icmd->unsli3.rcvsli3.ox_id = oldcmd->unsli3.rcvsli3.ox_id;
5760
5761 pcmd = (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
5762 *((uint32_t *) (pcmd)) = ELS_CMD_ACC;
5763 pcmd += sizeof(uint16_t);
5764 *((uint16_t *)(pcmd)) = be16_to_cpu(cmdsize);
5765 pcmd += sizeof(uint16_t);
5766
5767 /* Setup the RPL ACC payload */
5768 rpl_rsp.listLen = be32_to_cpu(1);
5769 rpl_rsp.index = 0;
5770 rpl_rsp.port_num_blk.portNum = 0;
5771 rpl_rsp.port_num_blk.portID = be32_to_cpu(vport->fc_myDID);
5772 memcpy(&rpl_rsp.port_num_blk.portName, &vport->fc_portname,
5773 sizeof(struct lpfc_name));
5774 memcpy(pcmd, &rpl_rsp, cmdsize - sizeof(uint32_t));
5775 /* Xmit ELS RPL ACC response tag <ulpIoTag> */
5776 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
5777 "0120 Xmit ELS RPL ACC response tag x%x "
5778 "xri x%x, did x%x, nlp_flag x%x, nlp_state x%x, "
5779 "rpi x%x\n",
5780 elsiocb->iotag, elsiocb->iocb.ulpContext,
5781 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
5782 ndlp->nlp_rpi);
5783 elsiocb->iocb_cmpl = lpfc_cmpl_els_rsp;
5784 phba->fc_stat.elsXmitACC++;
5785 if (lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0) ==
5786 IOCB_ERROR) {
5787 lpfc_els_free_iocb(phba, elsiocb);
5788 return 1;
5789 }
5790 return 0;
5791 }
5792
5793 /**
5794 * lpfc_els_rcv_rpl - Process an unsolicited rpl iocb
5795 * @vport: pointer to a host virtual N_Port data structure.
5796 * @cmdiocb: pointer to lpfc command iocb data structure.
5797 * @ndlp: pointer to a node-list data structure.
5798 *
5799 * This routine processes Read Port List (RPL) IOCB received as an ELS
5800 * unsolicited event. It first checks the remote port state. If the remote
5801 * port is not in NLP_STE_UNMAPPED_NODE and NLP_STE_MAPPED_NODE states, it
5802 * invokes the lpfc_els_rsp_reject() routine to send reject response.
5803 * Otherwise, this routine then invokes the lpfc_els_rsp_rpl_acc() routine
5804 * to accept the RPL.
5805 *
5806 * Return code
5807 * 0 - Successfully processed rpl iocb (currently always return 0)
5808 **/
5809 static int
5810 lpfc_els_rcv_rpl(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
5811 struct lpfc_nodelist *ndlp)
5812 {
5813 struct lpfc_dmabuf *pcmd;
5814 uint32_t *lp;
5815 uint32_t maxsize;
5816 uint16_t cmdsize;
5817 RPL *rpl;
5818 struct ls_rjt stat;
5819
5820 if ((ndlp->nlp_state != NLP_STE_UNMAPPED_NODE) &&
5821 (ndlp->nlp_state != NLP_STE_MAPPED_NODE)) {
5822 /* issue rejection response */
5823 stat.un.b.lsRjtRsvd0 = 0;
5824 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
5825 stat.un.b.lsRjtRsnCodeExp = LSEXP_CANT_GIVE_DATA;
5826 stat.un.b.vendorUnique = 0;
5827 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
5828 NULL);
5829 /* rejected the unsolicited RPL request and done with it */
5830 return 0;
5831 }
5832
5833 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
5834 lp = (uint32_t *) pcmd->virt;
5835 rpl = (RPL *) (lp + 1);
5836 maxsize = be32_to_cpu(rpl->maxsize);
5837
5838 /* We support only one port */
5839 if ((rpl->index == 0) &&
5840 ((maxsize == 0) ||
5841 ((maxsize * sizeof(uint32_t)) >= sizeof(RPL_RSP)))) {
5842 cmdsize = sizeof(uint32_t) + sizeof(RPL_RSP);
5843 } else {
5844 cmdsize = sizeof(uint32_t) + maxsize * sizeof(uint32_t);
5845 }
5846 lpfc_els_rsp_rpl_acc(vport, cmdsize, cmdiocb, ndlp);
5847
5848 return 0;
5849 }
5850
5851 /**
5852 * lpfc_els_rcv_farp - Process an unsolicited farp request els command
5853 * @vport: pointer to a virtual N_Port data structure.
5854 * @cmdiocb: pointer to lpfc command iocb data structure.
5855 * @ndlp: pointer to a node-list data structure.
5856 *
5857 * This routine processes Fibre Channel Address Resolution Protocol
5858 * (FARP) Request IOCB received as an ELS unsolicited event. Currently,
5859 * the lpfc driver only supports matching on WWPN or WWNN for FARP. As such,
5860 * FARP_MATCH_PORT flag and FARP_MATCH_NODE flag are checked against the
5861 * Match Flag in the FARP request IOCB: if FARP_MATCH_PORT flag is set, the
5862 * remote PortName is compared against the FC PortName stored in the @vport
5863 * data structure; if FARP_MATCH_NODE flag is set, the remote NodeName is
5864 * compared against the FC NodeName stored in the @vport data structure.
5865 * If any of these matches and the FARP_REQUEST_FARPR flag is set in the
5866 * FARP request IOCB Response Flag, the lpfc_issue_els_farpr() routine is
5867 * invoked to send out FARP Response to the remote node. Before sending the
5868 * FARP Response, however, the FARP_REQUEST_PLOGI flag is check in the FARP
5869 * request IOCB Response Flag and, if it is set, the lpfc_issue_els_plogi()
5870 * routine is invoked to log into the remote port first.
5871 *
5872 * Return code
5873 * 0 - Either the FARP Match Mode not supported or successfully processed
5874 **/
5875 static int
5876 lpfc_els_rcv_farp(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
5877 struct lpfc_nodelist *ndlp)
5878 {
5879 struct lpfc_dmabuf *pcmd;
5880 uint32_t *lp;
5881 IOCB_t *icmd;
5882 FARP *fp;
5883 uint32_t cmd, cnt, did;
5884
5885 icmd = &cmdiocb->iocb;
5886 did = icmd->un.elsreq64.remoteID;
5887 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
5888 lp = (uint32_t *) pcmd->virt;
5889
5890 cmd = *lp++;
5891 fp = (FARP *) lp;
5892 /* FARP-REQ received from DID <did> */
5893 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
5894 "0601 FARP-REQ received from DID x%x\n", did);
5895 /* We will only support match on WWPN or WWNN */
5896 if (fp->Mflags & ~(FARP_MATCH_NODE | FARP_MATCH_PORT)) {
5897 return 0;
5898 }
5899
5900 cnt = 0;
5901 /* If this FARP command is searching for my portname */
5902 if (fp->Mflags & FARP_MATCH_PORT) {
5903 if (memcmp(&fp->RportName, &vport->fc_portname,
5904 sizeof(struct lpfc_name)) == 0)
5905 cnt = 1;
5906 }
5907
5908 /* If this FARP command is searching for my nodename */
5909 if (fp->Mflags & FARP_MATCH_NODE) {
5910 if (memcmp(&fp->RnodeName, &vport->fc_nodename,
5911 sizeof(struct lpfc_name)) == 0)
5912 cnt = 1;
5913 }
5914
5915 if (cnt) {
5916 if ((ndlp->nlp_state == NLP_STE_UNMAPPED_NODE) ||
5917 (ndlp->nlp_state == NLP_STE_MAPPED_NODE)) {
5918 /* Log back into the node before sending the FARP. */
5919 if (fp->Rflags & FARP_REQUEST_PLOGI) {
5920 ndlp->nlp_prev_state = ndlp->nlp_state;
5921 lpfc_nlp_set_state(vport, ndlp,
5922 NLP_STE_PLOGI_ISSUE);
5923 lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
5924 }
5925
5926 /* Send a FARP response to that node */
5927 if (fp->Rflags & FARP_REQUEST_FARPR)
5928 lpfc_issue_els_farpr(vport, did, 0);
5929 }
5930 }
5931 return 0;
5932 }
5933
5934 /**
5935 * lpfc_els_rcv_farpr - Process an unsolicited farp response iocb
5936 * @vport: pointer to a host virtual N_Port data structure.
5937 * @cmdiocb: pointer to lpfc command iocb data structure.
5938 * @ndlp: pointer to a node-list data structure.
5939 *
5940 * This routine processes Fibre Channel Address Resolution Protocol
5941 * Response (FARPR) IOCB received as an ELS unsolicited event. It simply
5942 * invokes the lpfc_els_rsp_acc() routine to the remote node to accept
5943 * the FARP response request.
5944 *
5945 * Return code
5946 * 0 - Successfully processed FARPR IOCB (currently always return 0)
5947 **/
5948 static int
5949 lpfc_els_rcv_farpr(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
5950 struct lpfc_nodelist *ndlp)
5951 {
5952 struct lpfc_dmabuf *pcmd;
5953 uint32_t *lp;
5954 IOCB_t *icmd;
5955 uint32_t cmd, did;
5956
5957 icmd = &cmdiocb->iocb;
5958 did = icmd->un.elsreq64.remoteID;
5959 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
5960 lp = (uint32_t *) pcmd->virt;
5961
5962 cmd = *lp++;
5963 /* FARP-RSP received from DID <did> */
5964 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
5965 "0600 FARP-RSP received from DID x%x\n", did);
5966 /* ACCEPT the Farp resp request */
5967 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
5968
5969 return 0;
5970 }
5971
5972 /**
5973 * lpfc_els_rcv_fan - Process an unsolicited fan iocb command
5974 * @vport: pointer to a host virtual N_Port data structure.
5975 * @cmdiocb: pointer to lpfc command iocb data structure.
5976 * @fan_ndlp: pointer to a node-list data structure.
5977 *
5978 * This routine processes a Fabric Address Notification (FAN) IOCB
5979 * command received as an ELS unsolicited event. The FAN ELS command will
5980 * only be processed on a physical port (i.e., the @vport represents the
5981 * physical port). The fabric NodeName and PortName from the FAN IOCB are
5982 * compared against those in the phba data structure. If any of those is
5983 * different, the lpfc_initial_flogi() routine is invoked to initialize
5984 * Fabric Login (FLOGI) to the fabric to start the discover over. Otherwise,
5985 * if both of those are identical, the lpfc_issue_fabric_reglogin() routine
5986 * is invoked to register login to the fabric.
5987 *
5988 * Return code
5989 * 0 - Successfully processed fan iocb (currently always return 0).
5990 **/
5991 static int
5992 lpfc_els_rcv_fan(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
5993 struct lpfc_nodelist *fan_ndlp)
5994 {
5995 struct lpfc_hba *phba = vport->phba;
5996 uint32_t *lp;
5997 FAN *fp;
5998
5999 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, "0265 FAN received\n");
6000 lp = (uint32_t *)((struct lpfc_dmabuf *)cmdiocb->context2)->virt;
6001 fp = (FAN *) ++lp;
6002 /* FAN received; Fan does not have a reply sequence */
6003 if ((vport == phba->pport) &&
6004 (vport->port_state == LPFC_LOCAL_CFG_LINK)) {
6005 if ((memcmp(&phba->fc_fabparam.nodeName, &fp->FnodeName,
6006 sizeof(struct lpfc_name))) ||
6007 (memcmp(&phba->fc_fabparam.portName, &fp->FportName,
6008 sizeof(struct lpfc_name)))) {
6009 /* This port has switched fabrics. FLOGI is required */
6010 lpfc_issue_init_vfi(vport);
6011 } else {
6012 /* FAN verified - skip FLOGI */
6013 vport->fc_myDID = vport->fc_prevDID;
6014 if (phba->sli_rev < LPFC_SLI_REV4)
6015 lpfc_issue_fabric_reglogin(vport);
6016 else {
6017 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
6018 "3138 Need register VFI: (x%x/%x)\n",
6019 vport->fc_prevDID, vport->fc_myDID);
6020 lpfc_issue_reg_vfi(vport);
6021 }
6022 }
6023 }
6024 return 0;
6025 }
6026
6027 /**
6028 * lpfc_els_timeout - Handler funciton to the els timer
6029 * @ptr: holder for the timer function associated data.
6030 *
6031 * This routine is invoked by the ELS timer after timeout. It posts the ELS
6032 * timer timeout event by setting the WORKER_ELS_TMO bit to the work port
6033 * event bitmap and then invokes the lpfc_worker_wake_up() routine to wake
6034 * up the worker thread. It is for the worker thread to invoke the routine
6035 * lpfc_els_timeout_handler() to work on the posted event WORKER_ELS_TMO.
6036 **/
6037 void
6038 lpfc_els_timeout(unsigned long ptr)
6039 {
6040 struct lpfc_vport *vport = (struct lpfc_vport *) ptr;
6041 struct lpfc_hba *phba = vport->phba;
6042 uint32_t tmo_posted;
6043 unsigned long iflag;
6044
6045 spin_lock_irqsave(&vport->work_port_lock, iflag);
6046 tmo_posted = vport->work_port_events & WORKER_ELS_TMO;
6047 if (!tmo_posted)
6048 vport->work_port_events |= WORKER_ELS_TMO;
6049 spin_unlock_irqrestore(&vport->work_port_lock, iflag);
6050
6051 if (!tmo_posted)
6052 lpfc_worker_wake_up(phba);
6053 return;
6054 }
6055
6056
6057 /**
6058 * lpfc_els_timeout_handler - Process an els timeout event
6059 * @vport: pointer to a virtual N_Port data structure.
6060 *
6061 * This routine is the actual handler function that processes an ELS timeout
6062 * event. It walks the ELS ring to get and abort all the IOCBs (except the
6063 * ABORT/CLOSE/FARP/FARPR/FDISC), which are associated with the @vport by
6064 * invoking the lpfc_sli_issue_abort_iotag() routine.
6065 **/
6066 void
6067 lpfc_els_timeout_handler(struct lpfc_vport *vport)
6068 {
6069 struct lpfc_hba *phba = vport->phba;
6070 struct lpfc_sli_ring *pring;
6071 struct lpfc_iocbq *tmp_iocb, *piocb;
6072 IOCB_t *cmd = NULL;
6073 struct lpfc_dmabuf *pcmd;
6074 uint32_t els_command = 0;
6075 uint32_t timeout;
6076 uint32_t remote_ID = 0xffffffff;
6077 LIST_HEAD(txcmplq_completions);
6078 LIST_HEAD(abort_list);
6079
6080
6081 timeout = (uint32_t)(phba->fc_ratov << 1);
6082
6083 pring = &phba->sli.ring[LPFC_ELS_RING];
6084
6085 spin_lock_irq(&phba->hbalock);
6086 list_splice_init(&pring->txcmplq, &txcmplq_completions);
6087 spin_unlock_irq(&phba->hbalock);
6088
6089 list_for_each_entry_safe(piocb, tmp_iocb, &txcmplq_completions, list) {
6090 cmd = &piocb->iocb;
6091
6092 if ((piocb->iocb_flag & LPFC_IO_LIBDFC) != 0 ||
6093 piocb->iocb.ulpCommand == CMD_ABORT_XRI_CN ||
6094 piocb->iocb.ulpCommand == CMD_CLOSE_XRI_CN)
6095 continue;
6096
6097 if (piocb->vport != vport)
6098 continue;
6099
6100 pcmd = (struct lpfc_dmabuf *) piocb->context2;
6101 if (pcmd)
6102 els_command = *(uint32_t *) (pcmd->virt);
6103
6104 if (els_command == ELS_CMD_FARP ||
6105 els_command == ELS_CMD_FARPR ||
6106 els_command == ELS_CMD_FDISC)
6107 continue;
6108
6109 if (piocb->drvrTimeout > 0) {
6110 if (piocb->drvrTimeout >= timeout)
6111 piocb->drvrTimeout -= timeout;
6112 else
6113 piocb->drvrTimeout = 0;
6114 continue;
6115 }
6116
6117 remote_ID = 0xffffffff;
6118 if (cmd->ulpCommand != CMD_GEN_REQUEST64_CR)
6119 remote_ID = cmd->un.elsreq64.remoteID;
6120 else {
6121 struct lpfc_nodelist *ndlp;
6122 ndlp = __lpfc_findnode_rpi(vport, cmd->ulpContext);
6123 if (ndlp && NLP_CHK_NODE_ACT(ndlp))
6124 remote_ID = ndlp->nlp_DID;
6125 }
6126 list_add_tail(&piocb->dlist, &abort_list);
6127 }
6128 spin_lock_irq(&phba->hbalock);
6129 list_splice(&txcmplq_completions, &pring->txcmplq);
6130 spin_unlock_irq(&phba->hbalock);
6131
6132 list_for_each_entry_safe(piocb, tmp_iocb, &abort_list, dlist) {
6133 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
6134 "0127 ELS timeout Data: x%x x%x x%x "
6135 "x%x\n", els_command,
6136 remote_ID, cmd->ulpCommand, cmd->ulpIoTag);
6137 spin_lock_irq(&phba->hbalock);
6138 list_del_init(&piocb->dlist);
6139 lpfc_sli_issue_abort_iotag(phba, pring, piocb);
6140 spin_unlock_irq(&phba->hbalock);
6141 }
6142
6143 if (phba->sli.ring[LPFC_ELS_RING].txcmplq_cnt)
6144 mod_timer(&vport->els_tmofunc, jiffies + HZ * timeout);
6145 }
6146
6147 /**
6148 * lpfc_els_flush_cmd - Clean up the outstanding els commands to a vport
6149 * @vport: pointer to a host virtual N_Port data structure.
6150 *
6151 * This routine is used to clean up all the outstanding ELS commands on a
6152 * @vport. It first aborts the @vport by invoking lpfc_fabric_abort_vport()
6153 * routine. After that, it walks the ELS transmit queue to remove all the
6154 * IOCBs with the @vport other than the QUE_RING and ABORT/CLOSE IOCBs. For
6155 * the IOCBs with a non-NULL completion callback function, the callback
6156 * function will be invoked with the status set to IOSTAT_LOCAL_REJECT and
6157 * un.ulpWord[4] set to IOERR_SLI_ABORTED. For IOCBs with a NULL completion
6158 * callback function, the IOCB will simply be released. Finally, it walks
6159 * the ELS transmit completion queue to issue an abort IOCB to any transmit
6160 * completion queue IOCB that is associated with the @vport and is not
6161 * an IOCB from libdfc (i.e., the management plane IOCBs that are not
6162 * part of the discovery state machine) out to HBA by invoking the
6163 * lpfc_sli_issue_abort_iotag() routine. Note that this function issues the
6164 * abort IOCB to any transmit completion queueed IOCB, it does not guarantee
6165 * the IOCBs are aborted when this function returns.
6166 **/
6167 void
6168 lpfc_els_flush_cmd(struct lpfc_vport *vport)
6169 {
6170 LIST_HEAD(completions);
6171 struct lpfc_hba *phba = vport->phba;
6172 struct lpfc_sli_ring *pring = &phba->sli.ring[LPFC_ELS_RING];
6173 struct lpfc_iocbq *tmp_iocb, *piocb;
6174 IOCB_t *cmd = NULL;
6175
6176 lpfc_fabric_abort_vport(vport);
6177
6178 spin_lock_irq(&phba->hbalock);
6179 list_for_each_entry_safe(piocb, tmp_iocb, &pring->txq, list) {
6180 cmd = &piocb->iocb;
6181
6182 if (piocb->iocb_flag & LPFC_IO_LIBDFC) {
6183 continue;
6184 }
6185
6186 /* Do not flush out the QUE_RING and ABORT/CLOSE iocbs */
6187 if (cmd->ulpCommand == CMD_QUE_RING_BUF_CN ||
6188 cmd->ulpCommand == CMD_QUE_RING_BUF64_CN ||
6189 cmd->ulpCommand == CMD_CLOSE_XRI_CN ||
6190 cmd->ulpCommand == CMD_ABORT_XRI_CN)
6191 continue;
6192
6193 if (piocb->vport != vport)
6194 continue;
6195
6196 list_move_tail(&piocb->list, &completions);
6197 pring->txq_cnt--;
6198 }
6199
6200 list_for_each_entry_safe(piocb, tmp_iocb, &pring->txcmplq, list) {
6201 if (piocb->iocb_flag & LPFC_IO_LIBDFC) {
6202 continue;
6203 }
6204
6205 if (piocb->vport != vport)
6206 continue;
6207
6208 lpfc_sli_issue_abort_iotag(phba, pring, piocb);
6209 }
6210 spin_unlock_irq(&phba->hbalock);
6211
6212 /* Cancell all the IOCBs from the completions list */
6213 lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT,
6214 IOERR_SLI_ABORTED);
6215
6216 return;
6217 }
6218
6219 /**
6220 * lpfc_els_flush_all_cmd - Clean up all the outstanding els commands to a HBA
6221 * @phba: pointer to lpfc hba data structure.
6222 *
6223 * This routine is used to clean up all the outstanding ELS commands on a
6224 * @phba. It first aborts the @phba by invoking the lpfc_fabric_abort_hba()
6225 * routine. After that, it walks the ELS transmit queue to remove all the
6226 * IOCBs to the @phba other than the QUE_RING and ABORT/CLOSE IOCBs. For
6227 * the IOCBs with the completion callback function associated, the callback
6228 * function will be invoked with the status set to IOSTAT_LOCAL_REJECT and
6229 * un.ulpWord[4] set to IOERR_SLI_ABORTED. For IOCBs without the completion
6230 * callback function associated, the IOCB will simply be released. Finally,
6231 * it walks the ELS transmit completion queue to issue an abort IOCB to any
6232 * transmit completion queue IOCB that is not an IOCB from libdfc (i.e., the
6233 * management plane IOCBs that are not part of the discovery state machine)
6234 * out to HBA by invoking the lpfc_sli_issue_abort_iotag() routine.
6235 **/
6236 void
6237 lpfc_els_flush_all_cmd(struct lpfc_hba *phba)
6238 {
6239 LIST_HEAD(completions);
6240 struct lpfc_sli_ring *pring = &phba->sli.ring[LPFC_ELS_RING];
6241 struct lpfc_iocbq *tmp_iocb, *piocb;
6242 IOCB_t *cmd = NULL;
6243
6244 lpfc_fabric_abort_hba(phba);
6245 spin_lock_irq(&phba->hbalock);
6246 list_for_each_entry_safe(piocb, tmp_iocb, &pring->txq, list) {
6247 cmd = &piocb->iocb;
6248 if (piocb->iocb_flag & LPFC_IO_LIBDFC)
6249 continue;
6250 /* Do not flush out the QUE_RING and ABORT/CLOSE iocbs */
6251 if (cmd->ulpCommand == CMD_QUE_RING_BUF_CN ||
6252 cmd->ulpCommand == CMD_QUE_RING_BUF64_CN ||
6253 cmd->ulpCommand == CMD_CLOSE_XRI_CN ||
6254 cmd->ulpCommand == CMD_ABORT_XRI_CN)
6255 continue;
6256 list_move_tail(&piocb->list, &completions);
6257 pring->txq_cnt--;
6258 }
6259 list_for_each_entry_safe(piocb, tmp_iocb, &pring->txcmplq, list) {
6260 if (piocb->iocb_flag & LPFC_IO_LIBDFC)
6261 continue;
6262 lpfc_sli_issue_abort_iotag(phba, pring, piocb);
6263 }
6264 spin_unlock_irq(&phba->hbalock);
6265
6266 /* Cancel all the IOCBs from the completions list */
6267 lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT,
6268 IOERR_SLI_ABORTED);
6269
6270 return;
6271 }
6272
6273 /**
6274 * lpfc_send_els_failure_event - Posts an ELS command failure event
6275 * @phba: Pointer to hba context object.
6276 * @cmdiocbp: Pointer to command iocb which reported error.
6277 * @rspiocbp: Pointer to response iocb which reported error.
6278 *
6279 * This function sends an event when there is an ELS command
6280 * failure.
6281 **/
6282 void
6283 lpfc_send_els_failure_event(struct lpfc_hba *phba,
6284 struct lpfc_iocbq *cmdiocbp,
6285 struct lpfc_iocbq *rspiocbp)
6286 {
6287 struct lpfc_vport *vport = cmdiocbp->vport;
6288 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
6289 struct lpfc_lsrjt_event lsrjt_event;
6290 struct lpfc_fabric_event_header fabric_event;
6291 struct ls_rjt stat;
6292 struct lpfc_nodelist *ndlp;
6293 uint32_t *pcmd;
6294
6295 ndlp = cmdiocbp->context1;
6296 if (!ndlp || !NLP_CHK_NODE_ACT(ndlp))
6297 return;
6298
6299 if (rspiocbp->iocb.ulpStatus == IOSTAT_LS_RJT) {
6300 lsrjt_event.header.event_type = FC_REG_ELS_EVENT;
6301 lsrjt_event.header.subcategory = LPFC_EVENT_LSRJT_RCV;
6302 memcpy(lsrjt_event.header.wwpn, &ndlp->nlp_portname,
6303 sizeof(struct lpfc_name));
6304 memcpy(lsrjt_event.header.wwnn, &ndlp->nlp_nodename,
6305 sizeof(struct lpfc_name));
6306 pcmd = (uint32_t *) (((struct lpfc_dmabuf *)
6307 cmdiocbp->context2)->virt);
6308 lsrjt_event.command = (pcmd != NULL) ? *pcmd : 0;
6309 stat.un.lsRjtError = be32_to_cpu(rspiocbp->iocb.un.ulpWord[4]);
6310 lsrjt_event.reason_code = stat.un.b.lsRjtRsnCode;
6311 lsrjt_event.explanation = stat.un.b.lsRjtRsnCodeExp;
6312 fc_host_post_vendor_event(shost,
6313 fc_get_event_number(),
6314 sizeof(lsrjt_event),
6315 (char *)&lsrjt_event,
6316 LPFC_NL_VENDOR_ID);
6317 return;
6318 }
6319 if ((rspiocbp->iocb.ulpStatus == IOSTAT_NPORT_BSY) ||
6320 (rspiocbp->iocb.ulpStatus == IOSTAT_FABRIC_BSY)) {
6321 fabric_event.event_type = FC_REG_FABRIC_EVENT;
6322 if (rspiocbp->iocb.ulpStatus == IOSTAT_NPORT_BSY)
6323 fabric_event.subcategory = LPFC_EVENT_PORT_BUSY;
6324 else
6325 fabric_event.subcategory = LPFC_EVENT_FABRIC_BUSY;
6326 memcpy(fabric_event.wwpn, &ndlp->nlp_portname,
6327 sizeof(struct lpfc_name));
6328 memcpy(fabric_event.wwnn, &ndlp->nlp_nodename,
6329 sizeof(struct lpfc_name));
6330 fc_host_post_vendor_event(shost,
6331 fc_get_event_number(),
6332 sizeof(fabric_event),
6333 (char *)&fabric_event,
6334 LPFC_NL_VENDOR_ID);
6335 return;
6336 }
6337
6338 }
6339
6340 /**
6341 * lpfc_send_els_event - Posts unsolicited els event
6342 * @vport: Pointer to vport object.
6343 * @ndlp: Pointer FC node object.
6344 * @cmd: ELS command code.
6345 *
6346 * This function posts an event when there is an incoming
6347 * unsolicited ELS command.
6348 **/
6349 static void
6350 lpfc_send_els_event(struct lpfc_vport *vport,
6351 struct lpfc_nodelist *ndlp,
6352 uint32_t *payload)
6353 {
6354 struct lpfc_els_event_header *els_data = NULL;
6355 struct lpfc_logo_event *logo_data = NULL;
6356 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
6357
6358 if (*payload == ELS_CMD_LOGO) {
6359 logo_data = kmalloc(sizeof(struct lpfc_logo_event), GFP_KERNEL);
6360 if (!logo_data) {
6361 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
6362 "0148 Failed to allocate memory "
6363 "for LOGO event\n");
6364 return;
6365 }
6366 els_data = &logo_data->header;
6367 } else {
6368 els_data = kmalloc(sizeof(struct lpfc_els_event_header),
6369 GFP_KERNEL);
6370 if (!els_data) {
6371 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
6372 "0149 Failed to allocate memory "
6373 "for ELS event\n");
6374 return;
6375 }
6376 }
6377 els_data->event_type = FC_REG_ELS_EVENT;
6378 switch (*payload) {
6379 case ELS_CMD_PLOGI:
6380 els_data->subcategory = LPFC_EVENT_PLOGI_RCV;
6381 break;
6382 case ELS_CMD_PRLO:
6383 els_data->subcategory = LPFC_EVENT_PRLO_RCV;
6384 break;
6385 case ELS_CMD_ADISC:
6386 els_data->subcategory = LPFC_EVENT_ADISC_RCV;
6387 break;
6388 case ELS_CMD_LOGO:
6389 els_data->subcategory = LPFC_EVENT_LOGO_RCV;
6390 /* Copy the WWPN in the LOGO payload */
6391 memcpy(logo_data->logo_wwpn, &payload[2],
6392 sizeof(struct lpfc_name));
6393 break;
6394 default:
6395 kfree(els_data);
6396 return;
6397 }
6398 memcpy(els_data->wwpn, &ndlp->nlp_portname, sizeof(struct lpfc_name));
6399 memcpy(els_data->wwnn, &ndlp->nlp_nodename, sizeof(struct lpfc_name));
6400 if (*payload == ELS_CMD_LOGO) {
6401 fc_host_post_vendor_event(shost,
6402 fc_get_event_number(),
6403 sizeof(struct lpfc_logo_event),
6404 (char *)logo_data,
6405 LPFC_NL_VENDOR_ID);
6406 kfree(logo_data);
6407 } else {
6408 fc_host_post_vendor_event(shost,
6409 fc_get_event_number(),
6410 sizeof(struct lpfc_els_event_header),
6411 (char *)els_data,
6412 LPFC_NL_VENDOR_ID);
6413 kfree(els_data);
6414 }
6415
6416 return;
6417 }
6418
6419
6420 /**
6421 * lpfc_els_unsol_buffer - Process an unsolicited event data buffer
6422 * @phba: pointer to lpfc hba data structure.
6423 * @pring: pointer to a SLI ring.
6424 * @vport: pointer to a host virtual N_Port data structure.
6425 * @elsiocb: pointer to lpfc els command iocb data structure.
6426 *
6427 * This routine is used for processing the IOCB associated with a unsolicited
6428 * event. It first determines whether there is an existing ndlp that matches
6429 * the DID from the unsolicited IOCB. If not, it will create a new one with
6430 * the DID from the unsolicited IOCB. The ELS command from the unsolicited
6431 * IOCB is then used to invoke the proper routine and to set up proper state
6432 * of the discovery state machine.
6433 **/
6434 static void
6435 lpfc_els_unsol_buffer(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
6436 struct lpfc_vport *vport, struct lpfc_iocbq *elsiocb)
6437 {
6438 struct Scsi_Host *shost;
6439 struct lpfc_nodelist *ndlp;
6440 struct ls_rjt stat;
6441 uint32_t *payload;
6442 uint32_t cmd, did, newnode, rjt_err = 0;
6443 IOCB_t *icmd = &elsiocb->iocb;
6444
6445 if (!vport || !(elsiocb->context2))
6446 goto dropit;
6447
6448 newnode = 0;
6449 payload = ((struct lpfc_dmabuf *)elsiocb->context2)->virt;
6450 cmd = *payload;
6451 if ((phba->sli3_options & LPFC_SLI3_HBQ_ENABLED) == 0)
6452 lpfc_post_buffer(phba, pring, 1);
6453
6454 did = icmd->un.rcvels.remoteID;
6455 if (icmd->ulpStatus) {
6456 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
6457 "RCV Unsol ELS: status:x%x/x%x did:x%x",
6458 icmd->ulpStatus, icmd->un.ulpWord[4], did);
6459 goto dropit;
6460 }
6461
6462 /* Check to see if link went down during discovery */
6463 if (lpfc_els_chk_latt(vport))
6464 goto dropit;
6465
6466 /* Ignore traffic received during vport shutdown. */
6467 if (vport->load_flag & FC_UNLOADING)
6468 goto dropit;
6469
6470 /* If NPort discovery is delayed drop incoming ELS */
6471 if ((vport->fc_flag & FC_DISC_DELAYED) &&
6472 (cmd != ELS_CMD_PLOGI))
6473 goto dropit;
6474
6475 ndlp = lpfc_findnode_did(vport, did);
6476 if (!ndlp) {
6477 /* Cannot find existing Fabric ndlp, so allocate a new one */
6478 ndlp = mempool_alloc(phba->nlp_mem_pool, GFP_KERNEL);
6479 if (!ndlp)
6480 goto dropit;
6481
6482 lpfc_nlp_init(vport, ndlp, did);
6483 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
6484 newnode = 1;
6485 if ((did & Fabric_DID_MASK) == Fabric_DID_MASK)
6486 ndlp->nlp_type |= NLP_FABRIC;
6487 } else if (!NLP_CHK_NODE_ACT(ndlp)) {
6488 ndlp = lpfc_enable_node(vport, ndlp,
6489 NLP_STE_UNUSED_NODE);
6490 if (!ndlp)
6491 goto dropit;
6492 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
6493 newnode = 1;
6494 if ((did & Fabric_DID_MASK) == Fabric_DID_MASK)
6495 ndlp->nlp_type |= NLP_FABRIC;
6496 } else if (ndlp->nlp_state == NLP_STE_UNUSED_NODE) {
6497 /* This is similar to the new node path */
6498 ndlp = lpfc_nlp_get(ndlp);
6499 if (!ndlp)
6500 goto dropit;
6501 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
6502 newnode = 1;
6503 }
6504
6505 phba->fc_stat.elsRcvFrame++;
6506
6507 elsiocb->context1 = lpfc_nlp_get(ndlp);
6508 elsiocb->vport = vport;
6509
6510 if ((cmd & ELS_CMD_MASK) == ELS_CMD_RSCN) {
6511 cmd &= ELS_CMD_MASK;
6512 }
6513 /* ELS command <elsCmd> received from NPORT <did> */
6514 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
6515 "0112 ELS command x%x received from NPORT x%x "
6516 "Data: x%x\n", cmd, did, vport->port_state);
6517 switch (cmd) {
6518 case ELS_CMD_PLOGI:
6519 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
6520 "RCV PLOGI: did:x%x/ste:x%x flg:x%x",
6521 did, vport->port_state, ndlp->nlp_flag);
6522
6523 phba->fc_stat.elsRcvPLOGI++;
6524 ndlp = lpfc_plogi_confirm_nport(phba, payload, ndlp);
6525
6526 lpfc_send_els_event(vport, ndlp, payload);
6527
6528 /* If Nport discovery is delayed, reject PLOGIs */
6529 if (vport->fc_flag & FC_DISC_DELAYED) {
6530 rjt_err = LSRJT_UNABLE_TPC;
6531 break;
6532 }
6533 if (vport->port_state < LPFC_DISC_AUTH) {
6534 if (!(phba->pport->fc_flag & FC_PT2PT) ||
6535 (phba->pport->fc_flag & FC_PT2PT_PLOGI)) {
6536 rjt_err = LSRJT_UNABLE_TPC;
6537 break;
6538 }
6539 /* We get here, and drop thru, if we are PT2PT with
6540 * another NPort and the other side has initiated
6541 * the PLOGI before responding to our FLOGI.
6542 */
6543 }
6544
6545 shost = lpfc_shost_from_vport(vport);
6546 spin_lock_irq(shost->host_lock);
6547 ndlp->nlp_flag &= ~NLP_TARGET_REMOVE;
6548 spin_unlock_irq(shost->host_lock);
6549
6550 lpfc_disc_state_machine(vport, ndlp, elsiocb,
6551 NLP_EVT_RCV_PLOGI);
6552
6553 break;
6554 case ELS_CMD_FLOGI:
6555 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
6556 "RCV FLOGI: did:x%x/ste:x%x flg:x%x",
6557 did, vport->port_state, ndlp->nlp_flag);
6558
6559 phba->fc_stat.elsRcvFLOGI++;
6560 lpfc_els_rcv_flogi(vport, elsiocb, ndlp);
6561 if (newnode)
6562 lpfc_nlp_put(ndlp);
6563 break;
6564 case ELS_CMD_LOGO:
6565 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
6566 "RCV LOGO: did:x%x/ste:x%x flg:x%x",
6567 did, vport->port_state, ndlp->nlp_flag);
6568
6569 phba->fc_stat.elsRcvLOGO++;
6570 lpfc_send_els_event(vport, ndlp, payload);
6571 if (vport->port_state < LPFC_DISC_AUTH) {
6572 rjt_err = LSRJT_UNABLE_TPC;
6573 break;
6574 }
6575 lpfc_disc_state_machine(vport, ndlp, elsiocb, NLP_EVT_RCV_LOGO);
6576 break;
6577 case ELS_CMD_PRLO:
6578 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
6579 "RCV PRLO: did:x%x/ste:x%x flg:x%x",
6580 did, vport->port_state, ndlp->nlp_flag);
6581
6582 phba->fc_stat.elsRcvPRLO++;
6583 lpfc_send_els_event(vport, ndlp, payload);
6584 if (vport->port_state < LPFC_DISC_AUTH) {
6585 rjt_err = LSRJT_UNABLE_TPC;
6586 break;
6587 }
6588 lpfc_disc_state_machine(vport, ndlp, elsiocb, NLP_EVT_RCV_PRLO);
6589 break;
6590 case ELS_CMD_RSCN:
6591 phba->fc_stat.elsRcvRSCN++;
6592 lpfc_els_rcv_rscn(vport, elsiocb, ndlp);
6593 if (newnode)
6594 lpfc_nlp_put(ndlp);
6595 break;
6596 case ELS_CMD_ADISC:
6597 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
6598 "RCV ADISC: did:x%x/ste:x%x flg:x%x",
6599 did, vport->port_state, ndlp->nlp_flag);
6600
6601 lpfc_send_els_event(vport, ndlp, payload);
6602 phba->fc_stat.elsRcvADISC++;
6603 if (vport->port_state < LPFC_DISC_AUTH) {
6604 rjt_err = LSRJT_UNABLE_TPC;
6605 break;
6606 }
6607 lpfc_disc_state_machine(vport, ndlp, elsiocb,
6608 NLP_EVT_RCV_ADISC);
6609 break;
6610 case ELS_CMD_PDISC:
6611 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
6612 "RCV PDISC: did:x%x/ste:x%x flg:x%x",
6613 did, vport->port_state, ndlp->nlp_flag);
6614
6615 phba->fc_stat.elsRcvPDISC++;
6616 if (vport->port_state < LPFC_DISC_AUTH) {
6617 rjt_err = LSRJT_UNABLE_TPC;
6618 break;
6619 }
6620 lpfc_disc_state_machine(vport, ndlp, elsiocb,
6621 NLP_EVT_RCV_PDISC);
6622 break;
6623 case ELS_CMD_FARPR:
6624 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
6625 "RCV FARPR: did:x%x/ste:x%x flg:x%x",
6626 did, vport->port_state, ndlp->nlp_flag);
6627
6628 phba->fc_stat.elsRcvFARPR++;
6629 lpfc_els_rcv_farpr(vport, elsiocb, ndlp);
6630 break;
6631 case ELS_CMD_FARP:
6632 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
6633 "RCV FARP: did:x%x/ste:x%x flg:x%x",
6634 did, vport->port_state, ndlp->nlp_flag);
6635
6636 phba->fc_stat.elsRcvFARP++;
6637 lpfc_els_rcv_farp(vport, elsiocb, ndlp);
6638 break;
6639 case ELS_CMD_FAN:
6640 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
6641 "RCV FAN: did:x%x/ste:x%x flg:x%x",
6642 did, vport->port_state, ndlp->nlp_flag);
6643
6644 phba->fc_stat.elsRcvFAN++;
6645 lpfc_els_rcv_fan(vport, elsiocb, ndlp);
6646 break;
6647 case ELS_CMD_PRLI:
6648 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
6649 "RCV PRLI: did:x%x/ste:x%x flg:x%x",
6650 did, vport->port_state, ndlp->nlp_flag);
6651
6652 phba->fc_stat.elsRcvPRLI++;
6653 if (vport->port_state < LPFC_DISC_AUTH) {
6654 rjt_err = LSRJT_UNABLE_TPC;
6655 break;
6656 }
6657 lpfc_disc_state_machine(vport, ndlp, elsiocb, NLP_EVT_RCV_PRLI);
6658 break;
6659 case ELS_CMD_LIRR:
6660 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
6661 "RCV LIRR: did:x%x/ste:x%x flg:x%x",
6662 did, vport->port_state, ndlp->nlp_flag);
6663
6664 phba->fc_stat.elsRcvLIRR++;
6665 lpfc_els_rcv_lirr(vport, elsiocb, ndlp);
6666 if (newnode)
6667 lpfc_nlp_put(ndlp);
6668 break;
6669 case ELS_CMD_RLS:
6670 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
6671 "RCV RLS: did:x%x/ste:x%x flg:x%x",
6672 did, vport->port_state, ndlp->nlp_flag);
6673
6674 phba->fc_stat.elsRcvRLS++;
6675 lpfc_els_rcv_rls(vport, elsiocb, ndlp);
6676 if (newnode)
6677 lpfc_nlp_put(ndlp);
6678 break;
6679 case ELS_CMD_RPS:
6680 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
6681 "RCV RPS: did:x%x/ste:x%x flg:x%x",
6682 did, vport->port_state, ndlp->nlp_flag);
6683
6684 phba->fc_stat.elsRcvRPS++;
6685 lpfc_els_rcv_rps(vport, elsiocb, ndlp);
6686 if (newnode)
6687 lpfc_nlp_put(ndlp);
6688 break;
6689 case ELS_CMD_RPL:
6690 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
6691 "RCV RPL: did:x%x/ste:x%x flg:x%x",
6692 did, vport->port_state, ndlp->nlp_flag);
6693
6694 phba->fc_stat.elsRcvRPL++;
6695 lpfc_els_rcv_rpl(vport, elsiocb, ndlp);
6696 if (newnode)
6697 lpfc_nlp_put(ndlp);
6698 break;
6699 case ELS_CMD_RNID:
6700 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
6701 "RCV RNID: did:x%x/ste:x%x flg:x%x",
6702 did, vport->port_state, ndlp->nlp_flag);
6703
6704 phba->fc_stat.elsRcvRNID++;
6705 lpfc_els_rcv_rnid(vport, elsiocb, ndlp);
6706 if (newnode)
6707 lpfc_nlp_put(ndlp);
6708 break;
6709 case ELS_CMD_RTV:
6710 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
6711 "RCV RTV: did:x%x/ste:x%x flg:x%x",
6712 did, vport->port_state, ndlp->nlp_flag);
6713 phba->fc_stat.elsRcvRTV++;
6714 lpfc_els_rcv_rtv(vport, elsiocb, ndlp);
6715 if (newnode)
6716 lpfc_nlp_put(ndlp);
6717 break;
6718 case ELS_CMD_RRQ:
6719 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
6720 "RCV RRQ: did:x%x/ste:x%x flg:x%x",
6721 did, vport->port_state, ndlp->nlp_flag);
6722
6723 phba->fc_stat.elsRcvRRQ++;
6724 lpfc_els_rcv_rrq(vport, elsiocb, ndlp);
6725 if (newnode)
6726 lpfc_nlp_put(ndlp);
6727 break;
6728 case ELS_CMD_ECHO:
6729 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
6730 "RCV ECHO: did:x%x/ste:x%x flg:x%x",
6731 did, vport->port_state, ndlp->nlp_flag);
6732
6733 phba->fc_stat.elsRcvECHO++;
6734 lpfc_els_rcv_echo(vport, elsiocb, ndlp);
6735 if (newnode)
6736 lpfc_nlp_put(ndlp);
6737 break;
6738 default:
6739 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
6740 "RCV ELS cmd: cmd:x%x did:x%x/ste:x%x",
6741 cmd, did, vport->port_state);
6742
6743 /* Unsupported ELS command, reject */
6744 rjt_err = LSRJT_CMD_UNSUPPORTED;
6745
6746 /* Unknown ELS command <elsCmd> received from NPORT <did> */
6747 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
6748 "0115 Unknown ELS command x%x "
6749 "received from NPORT x%x\n", cmd, did);
6750 if (newnode)
6751 lpfc_nlp_put(ndlp);
6752 break;
6753 }
6754
6755 /* check if need to LS_RJT received ELS cmd */
6756 if (rjt_err) {
6757 memset(&stat, 0, sizeof(stat));
6758 stat.un.b.lsRjtRsnCode = rjt_err;
6759 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
6760 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, elsiocb, ndlp,
6761 NULL);
6762 }
6763
6764 lpfc_nlp_put(elsiocb->context1);
6765 elsiocb->context1 = NULL;
6766 return;
6767
6768 dropit:
6769 if (vport && !(vport->load_flag & FC_UNLOADING))
6770 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
6771 "0111 Dropping received ELS cmd "
6772 "Data: x%x x%x x%x\n",
6773 icmd->ulpStatus, icmd->un.ulpWord[4], icmd->ulpTimeout);
6774 phba->fc_stat.elsRcvDrop++;
6775 }
6776
6777 /**
6778 * lpfc_els_unsol_event - Process an unsolicited event from an els sli ring
6779 * @phba: pointer to lpfc hba data structure.
6780 * @pring: pointer to a SLI ring.
6781 * @elsiocb: pointer to lpfc els iocb data structure.
6782 *
6783 * This routine is used to process an unsolicited event received from a SLI
6784 * (Service Level Interface) ring. The actual processing of the data buffer
6785 * associated with the unsolicited event is done by invoking the routine
6786 * lpfc_els_unsol_buffer() after properly set up the iocb buffer from the
6787 * SLI ring on which the unsolicited event was received.
6788 **/
6789 void
6790 lpfc_els_unsol_event(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
6791 struct lpfc_iocbq *elsiocb)
6792 {
6793 struct lpfc_vport *vport = phba->pport;
6794 IOCB_t *icmd = &elsiocb->iocb;
6795 dma_addr_t paddr;
6796 struct lpfc_dmabuf *bdeBuf1 = elsiocb->context2;
6797 struct lpfc_dmabuf *bdeBuf2 = elsiocb->context3;
6798
6799 elsiocb->context1 = NULL;
6800 elsiocb->context2 = NULL;
6801 elsiocb->context3 = NULL;
6802
6803 if (icmd->ulpStatus == IOSTAT_NEED_BUFFER) {
6804 lpfc_sli_hbqbuf_add_hbqs(phba, LPFC_ELS_HBQ);
6805 } else if (icmd->ulpStatus == IOSTAT_LOCAL_REJECT &&
6806 (icmd->un.ulpWord[4] & 0xff) == IOERR_RCV_BUFFER_WAITING) {
6807 phba->fc_stat.NoRcvBuf++;
6808 /* Not enough posted buffers; Try posting more buffers */
6809 if (!(phba->sli3_options & LPFC_SLI3_HBQ_ENABLED))
6810 lpfc_post_buffer(phba, pring, 0);
6811 return;
6812 }
6813
6814 if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
6815 (icmd->ulpCommand == CMD_IOCB_RCV_ELS64_CX ||
6816 icmd->ulpCommand == CMD_IOCB_RCV_SEQ64_CX)) {
6817 if (icmd->unsli3.rcvsli3.vpi == 0xffff)
6818 vport = phba->pport;
6819 else
6820 vport = lpfc_find_vport_by_vpid(phba,
6821 icmd->unsli3.rcvsli3.vpi);
6822 }
6823
6824 /* If there are no BDEs associated
6825 * with this IOCB, there is nothing to do.
6826 */
6827 if (icmd->ulpBdeCount == 0)
6828 return;
6829
6830 /* type of ELS cmd is first 32bit word
6831 * in packet
6832 */
6833 if (phba->sli3_options & LPFC_SLI3_HBQ_ENABLED) {
6834 elsiocb->context2 = bdeBuf1;
6835 } else {
6836 paddr = getPaddr(icmd->un.cont64[0].addrHigh,
6837 icmd->un.cont64[0].addrLow);
6838 elsiocb->context2 = lpfc_sli_ringpostbuf_get(phba, pring,
6839 paddr);
6840 }
6841
6842 lpfc_els_unsol_buffer(phba, pring, vport, elsiocb);
6843 /*
6844 * The different unsolicited event handlers would tell us
6845 * if they are done with "mp" by setting context2 to NULL.
6846 */
6847 if (elsiocb->context2) {
6848 lpfc_in_buf_free(phba, (struct lpfc_dmabuf *)elsiocb->context2);
6849 elsiocb->context2 = NULL;
6850 }
6851
6852 /* RCV_ELS64_CX provide for 2 BDEs - process 2nd if included */
6853 if ((phba->sli3_options & LPFC_SLI3_HBQ_ENABLED) &&
6854 icmd->ulpBdeCount == 2) {
6855 elsiocb->context2 = bdeBuf2;
6856 lpfc_els_unsol_buffer(phba, pring, vport, elsiocb);
6857 /* free mp if we are done with it */
6858 if (elsiocb->context2) {
6859 lpfc_in_buf_free(phba, elsiocb->context2);
6860 elsiocb->context2 = NULL;
6861 }
6862 }
6863 }
6864
6865 /**
6866 * lpfc_do_scr_ns_plogi - Issue a plogi to the name server for scr
6867 * @phba: pointer to lpfc hba data structure.
6868 * @vport: pointer to a virtual N_Port data structure.
6869 *
6870 * This routine issues a Port Login (PLOGI) to the Name Server with
6871 * State Change Request (SCR) for a @vport. This routine will create an
6872 * ndlp for the Name Server associated to the @vport if such node does
6873 * not already exist. The PLOGI to Name Server is issued by invoking the
6874 * lpfc_issue_els_plogi() routine. If Fabric-Device Management Interface
6875 * (FDMI) is configured to the @vport, a FDMI node will be created and
6876 * the PLOGI to FDMI is issued by invoking lpfc_issue_els_plogi() routine.
6877 **/
6878 void
6879 lpfc_do_scr_ns_plogi(struct lpfc_hba *phba, struct lpfc_vport *vport)
6880 {
6881 struct lpfc_nodelist *ndlp, *ndlp_fdmi;
6882 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
6883
6884 /*
6885 * If lpfc_delay_discovery parameter is set and the clean address
6886 * bit is cleared and fc fabric parameters chenged, delay FC NPort
6887 * discovery.
6888 */
6889 spin_lock_irq(shost->host_lock);
6890 if (vport->fc_flag & FC_DISC_DELAYED) {
6891 spin_unlock_irq(shost->host_lock);
6892 mod_timer(&vport->delayed_disc_tmo,
6893 jiffies + HZ * phba->fc_ratov);
6894 return;
6895 }
6896 spin_unlock_irq(shost->host_lock);
6897
6898 ndlp = lpfc_findnode_did(vport, NameServer_DID);
6899 if (!ndlp) {
6900 ndlp = mempool_alloc(phba->nlp_mem_pool, GFP_KERNEL);
6901 if (!ndlp) {
6902 if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
6903 lpfc_disc_start(vport);
6904 return;
6905 }
6906 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
6907 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
6908 "0251 NameServer login: no memory\n");
6909 return;
6910 }
6911 lpfc_nlp_init(vport, ndlp, NameServer_DID);
6912 } else if (!NLP_CHK_NODE_ACT(ndlp)) {
6913 ndlp = lpfc_enable_node(vport, ndlp, NLP_STE_UNUSED_NODE);
6914 if (!ndlp) {
6915 if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
6916 lpfc_disc_start(vport);
6917 return;
6918 }
6919 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
6920 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
6921 "0348 NameServer login: node freed\n");
6922 return;
6923 }
6924 }
6925 ndlp->nlp_type |= NLP_FABRIC;
6926
6927 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
6928
6929 if (lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0)) {
6930 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
6931 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
6932 "0252 Cannot issue NameServer login\n");
6933 return;
6934 }
6935
6936 if (vport->cfg_fdmi_on) {
6937 /* If this is the first time, allocate an ndlp and initialize
6938 * it. Otherwise, make sure the node is enabled and then do the
6939 * login.
6940 */
6941 ndlp_fdmi = lpfc_findnode_did(vport, FDMI_DID);
6942 if (!ndlp_fdmi) {
6943 ndlp_fdmi = mempool_alloc(phba->nlp_mem_pool,
6944 GFP_KERNEL);
6945 if (ndlp_fdmi) {
6946 lpfc_nlp_init(vport, ndlp_fdmi, FDMI_DID);
6947 ndlp_fdmi->nlp_type |= NLP_FABRIC;
6948 } else
6949 return;
6950 }
6951 if (!NLP_CHK_NODE_ACT(ndlp_fdmi))
6952 ndlp_fdmi = lpfc_enable_node(vport,
6953 ndlp_fdmi,
6954 NLP_STE_NPR_NODE);
6955
6956 if (ndlp_fdmi) {
6957 lpfc_nlp_set_state(vport, ndlp_fdmi,
6958 NLP_STE_PLOGI_ISSUE);
6959 lpfc_issue_els_plogi(vport, ndlp_fdmi->nlp_DID, 0);
6960 }
6961 }
6962 }
6963
6964 /**
6965 * lpfc_cmpl_reg_new_vport - Completion callback function to register new vport
6966 * @phba: pointer to lpfc hba data structure.
6967 * @pmb: pointer to the driver internal queue element for mailbox command.
6968 *
6969 * This routine is the completion callback function to register new vport
6970 * mailbox command. If the new vport mailbox command completes successfully,
6971 * the fabric registration login shall be performed on physical port (the
6972 * new vport created is actually a physical port, with VPI 0) or the port
6973 * login to Name Server for State Change Request (SCR) will be performed
6974 * on virtual port (real virtual port, with VPI greater than 0).
6975 **/
6976 static void
6977 lpfc_cmpl_reg_new_vport(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
6978 {
6979 struct lpfc_vport *vport = pmb->vport;
6980 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
6981 struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) pmb->context2;
6982 MAILBOX_t *mb = &pmb->u.mb;
6983 int rc;
6984
6985 spin_lock_irq(shost->host_lock);
6986 vport->fc_flag &= ~FC_VPORT_NEEDS_REG_VPI;
6987 spin_unlock_irq(shost->host_lock);
6988
6989 if (mb->mbxStatus) {
6990 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
6991 "0915 Register VPI failed : Status: x%x"
6992 " upd bit: x%x \n", mb->mbxStatus,
6993 mb->un.varRegVpi.upd);
6994 if (phba->sli_rev == LPFC_SLI_REV4 &&
6995 mb->un.varRegVpi.upd)
6996 goto mbox_err_exit ;
6997
6998 switch (mb->mbxStatus) {
6999 case 0x11: /* unsupported feature */
7000 case 0x9603: /* max_vpi exceeded */
7001 case 0x9602: /* Link event since CLEAR_LA */
7002 /* giving up on vport registration */
7003 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
7004 spin_lock_irq(shost->host_lock);
7005 vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP);
7006 spin_unlock_irq(shost->host_lock);
7007 lpfc_can_disctmo(vport);
7008 break;
7009 /* If reg_vpi fail with invalid VPI status, re-init VPI */
7010 case 0x20:
7011 spin_lock_irq(shost->host_lock);
7012 vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
7013 spin_unlock_irq(shost->host_lock);
7014 lpfc_init_vpi(phba, pmb, vport->vpi);
7015 pmb->vport = vport;
7016 pmb->mbox_cmpl = lpfc_init_vpi_cmpl;
7017 rc = lpfc_sli_issue_mbox(phba, pmb,
7018 MBX_NOWAIT);
7019 if (rc == MBX_NOT_FINISHED) {
7020 lpfc_printf_vlog(vport,
7021 KERN_ERR, LOG_MBOX,
7022 "2732 Failed to issue INIT_VPI"
7023 " mailbox command\n");
7024 } else {
7025 lpfc_nlp_put(ndlp);
7026 return;
7027 }
7028
7029 default:
7030 /* Try to recover from this error */
7031 if (phba->sli_rev == LPFC_SLI_REV4)
7032 lpfc_sli4_unreg_all_rpis(vport);
7033 lpfc_mbx_unreg_vpi(vport);
7034 spin_lock_irq(shost->host_lock);
7035 vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
7036 spin_unlock_irq(shost->host_lock);
7037 if (vport->port_type == LPFC_PHYSICAL_PORT
7038 && !(vport->fc_flag & FC_LOGO_RCVD_DID_CHNG))
7039 lpfc_issue_init_vfi(vport);
7040 else
7041 lpfc_initial_fdisc(vport);
7042 break;
7043 }
7044 } else {
7045 spin_lock_irq(shost->host_lock);
7046 vport->vpi_state |= LPFC_VPI_REGISTERED;
7047 spin_unlock_irq(shost->host_lock);
7048 if (vport == phba->pport) {
7049 if (phba->sli_rev < LPFC_SLI_REV4)
7050 lpfc_issue_fabric_reglogin(vport);
7051 else {
7052 /*
7053 * If the physical port is instantiated using
7054 * FDISC, do not start vport discovery.
7055 */
7056 if (vport->port_state != LPFC_FDISC)
7057 lpfc_start_fdiscs(phba);
7058 lpfc_do_scr_ns_plogi(phba, vport);
7059 }
7060 } else
7061 lpfc_do_scr_ns_plogi(phba, vport);
7062 }
7063 mbox_err_exit:
7064 /* Now, we decrement the ndlp reference count held for this
7065 * callback function
7066 */
7067 lpfc_nlp_put(ndlp);
7068
7069 mempool_free(pmb, phba->mbox_mem_pool);
7070 return;
7071 }
7072
7073 /**
7074 * lpfc_register_new_vport - Register a new vport with a HBA
7075 * @phba: pointer to lpfc hba data structure.
7076 * @vport: pointer to a host virtual N_Port data structure.
7077 * @ndlp: pointer to a node-list data structure.
7078 *
7079 * This routine registers the @vport as a new virtual port with a HBA.
7080 * It is done through a registering vpi mailbox command.
7081 **/
7082 void
7083 lpfc_register_new_vport(struct lpfc_hba *phba, struct lpfc_vport *vport,
7084 struct lpfc_nodelist *ndlp)
7085 {
7086 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
7087 LPFC_MBOXQ_t *mbox;
7088
7089 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
7090 if (mbox) {
7091 lpfc_reg_vpi(vport, mbox);
7092 mbox->vport = vport;
7093 mbox->context2 = lpfc_nlp_get(ndlp);
7094 mbox->mbox_cmpl = lpfc_cmpl_reg_new_vport;
7095 if (lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT)
7096 == MBX_NOT_FINISHED) {
7097 /* mailbox command not success, decrement ndlp
7098 * reference count for this command
7099 */
7100 lpfc_nlp_put(ndlp);
7101 mempool_free(mbox, phba->mbox_mem_pool);
7102
7103 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
7104 "0253 Register VPI: Can't send mbox\n");
7105 goto mbox_err_exit;
7106 }
7107 } else {
7108 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
7109 "0254 Register VPI: no memory\n");
7110 goto mbox_err_exit;
7111 }
7112 return;
7113
7114 mbox_err_exit:
7115 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
7116 spin_lock_irq(shost->host_lock);
7117 vport->fc_flag &= ~FC_VPORT_NEEDS_REG_VPI;
7118 spin_unlock_irq(shost->host_lock);
7119 return;
7120 }
7121
7122 /**
7123 * lpfc_cancel_all_vport_retry_delay_timer - Cancel all vport retry delay timer
7124 * @phba: pointer to lpfc hba data structure.
7125 *
7126 * This routine cancels the retry delay timers to all the vports.
7127 **/
7128 void
7129 lpfc_cancel_all_vport_retry_delay_timer(struct lpfc_hba *phba)
7130 {
7131 struct lpfc_vport **vports;
7132 struct lpfc_nodelist *ndlp;
7133 uint32_t link_state;
7134 int i;
7135
7136 /* Treat this failure as linkdown for all vports */
7137 link_state = phba->link_state;
7138 lpfc_linkdown(phba);
7139 phba->link_state = link_state;
7140
7141 vports = lpfc_create_vport_work_array(phba);
7142
7143 if (vports) {
7144 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
7145 ndlp = lpfc_findnode_did(vports[i], Fabric_DID);
7146 if (ndlp)
7147 lpfc_cancel_retry_delay_tmo(vports[i], ndlp);
7148 lpfc_els_flush_cmd(vports[i]);
7149 }
7150 lpfc_destroy_vport_work_array(phba, vports);
7151 }
7152 }
7153
7154 /**
7155 * lpfc_retry_pport_discovery - Start timer to retry FLOGI.
7156 * @phba: pointer to lpfc hba data structure.
7157 *
7158 * This routine abort all pending discovery commands and
7159 * start a timer to retry FLOGI for the physical port
7160 * discovery.
7161 **/
7162 void
7163 lpfc_retry_pport_discovery(struct lpfc_hba *phba)
7164 {
7165 struct lpfc_nodelist *ndlp;
7166 struct Scsi_Host *shost;
7167
7168 /* Cancel the all vports retry delay retry timers */
7169 lpfc_cancel_all_vport_retry_delay_timer(phba);
7170
7171 /* If fabric require FLOGI, then re-instantiate physical login */
7172 ndlp = lpfc_findnode_did(phba->pport, Fabric_DID);
7173 if (!ndlp)
7174 return;
7175
7176 shost = lpfc_shost_from_vport(phba->pport);
7177 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ);
7178 spin_lock_irq(shost->host_lock);
7179 ndlp->nlp_flag |= NLP_DELAY_TMO;
7180 spin_unlock_irq(shost->host_lock);
7181 ndlp->nlp_last_elscmd = ELS_CMD_FLOGI;
7182 phba->pport->port_state = LPFC_FLOGI;
7183 return;
7184 }
7185
7186 /**
7187 * lpfc_fabric_login_reqd - Check if FLOGI required.
7188 * @phba: pointer to lpfc hba data structure.
7189 * @cmdiocb: pointer to FDISC command iocb.
7190 * @rspiocb: pointer to FDISC response iocb.
7191 *
7192 * This routine checks if a FLOGI is reguired for FDISC
7193 * to succeed.
7194 **/
7195 static int
7196 lpfc_fabric_login_reqd(struct lpfc_hba *phba,
7197 struct lpfc_iocbq *cmdiocb,
7198 struct lpfc_iocbq *rspiocb)
7199 {
7200
7201 if ((rspiocb->iocb.ulpStatus != IOSTAT_FABRIC_RJT) ||
7202 (rspiocb->iocb.un.ulpWord[4] != RJT_LOGIN_REQUIRED))
7203 return 0;
7204 else
7205 return 1;
7206 }
7207
7208 /**
7209 * lpfc_cmpl_els_fdisc - Completion function for fdisc iocb command
7210 * @phba: pointer to lpfc hba data structure.
7211 * @cmdiocb: pointer to lpfc command iocb data structure.
7212 * @rspiocb: pointer to lpfc response iocb data structure.
7213 *
7214 * This routine is the completion callback function to a Fabric Discover
7215 * (FDISC) ELS command. Since all the FDISC ELS commands are issued
7216 * single threaded, each FDISC completion callback function will reset
7217 * the discovery timer for all vports such that the timers will not get
7218 * unnecessary timeout. The function checks the FDISC IOCB status. If error
7219 * detected, the vport will be set to FC_VPORT_FAILED state. Otherwise,the
7220 * vport will set to FC_VPORT_ACTIVE state. It then checks whether the DID
7221 * assigned to the vport has been changed with the completion of the FDISC
7222 * command. If so, both RPI (Remote Port Index) and VPI (Virtual Port Index)
7223 * are unregistered from the HBA, and then the lpfc_register_new_vport()
7224 * routine is invoked to register new vport with the HBA. Otherwise, the
7225 * lpfc_do_scr_ns_plogi() routine is invoked to issue a PLOGI to the Name
7226 * Server for State Change Request (SCR).
7227 **/
7228 static void
7229 lpfc_cmpl_els_fdisc(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
7230 struct lpfc_iocbq *rspiocb)
7231 {
7232 struct lpfc_vport *vport = cmdiocb->vport;
7233 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
7234 struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) cmdiocb->context1;
7235 struct lpfc_nodelist *np;
7236 struct lpfc_nodelist *next_np;
7237 IOCB_t *irsp = &rspiocb->iocb;
7238 struct lpfc_iocbq *piocb;
7239 struct lpfc_dmabuf *pcmd = cmdiocb->context2, *prsp;
7240 struct serv_parm *sp;
7241 uint8_t fabric_param_changed;
7242
7243 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
7244 "0123 FDISC completes. x%x/x%x prevDID: x%x\n",
7245 irsp->ulpStatus, irsp->un.ulpWord[4],
7246 vport->fc_prevDID);
7247 /* Since all FDISCs are being single threaded, we
7248 * must reset the discovery timer for ALL vports
7249 * waiting to send FDISC when one completes.
7250 */
7251 list_for_each_entry(piocb, &phba->fabric_iocb_list, list) {
7252 lpfc_set_disctmo(piocb->vport);
7253 }
7254
7255 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
7256 "FDISC cmpl: status:x%x/x%x prevdid:x%x",
7257 irsp->ulpStatus, irsp->un.ulpWord[4], vport->fc_prevDID);
7258
7259 if (irsp->ulpStatus) {
7260
7261 if (lpfc_fabric_login_reqd(phba, cmdiocb, rspiocb)) {
7262 lpfc_retry_pport_discovery(phba);
7263 goto out;
7264 }
7265
7266 /* Check for retry */
7267 if (lpfc_els_retry(phba, cmdiocb, rspiocb))
7268 goto out;
7269 /* FDISC failed */
7270 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
7271 "0126 FDISC failed. (x%x/x%x)\n",
7272 irsp->ulpStatus, irsp->un.ulpWord[4]);
7273 goto fdisc_failed;
7274 }
7275 spin_lock_irq(shost->host_lock);
7276 vport->fc_flag &= ~FC_VPORT_CVL_RCVD;
7277 vport->fc_flag &= ~FC_VPORT_LOGO_RCVD;
7278 vport->fc_flag |= FC_FABRIC;
7279 if (vport->phba->fc_topology == LPFC_TOPOLOGY_LOOP)
7280 vport->fc_flag |= FC_PUBLIC_LOOP;
7281 spin_unlock_irq(shost->host_lock);
7282
7283 vport->fc_myDID = irsp->un.ulpWord[4] & Mask_DID;
7284 lpfc_vport_set_state(vport, FC_VPORT_ACTIVE);
7285 prsp = list_get_first(&pcmd->list, struct lpfc_dmabuf, list);
7286 sp = prsp->virt + sizeof(uint32_t);
7287 fabric_param_changed = lpfc_check_clean_addr_bit(vport, sp);
7288 memcpy(&vport->fabric_portname, &sp->portName,
7289 sizeof(struct lpfc_name));
7290 memcpy(&vport->fabric_nodename, &sp->nodeName,
7291 sizeof(struct lpfc_name));
7292 if (fabric_param_changed &&
7293 !(vport->fc_flag & FC_VPORT_NEEDS_REG_VPI)) {
7294 /* If our NportID changed, we need to ensure all
7295 * remaining NPORTs get unreg_login'ed so we can
7296 * issue unreg_vpi.
7297 */
7298 list_for_each_entry_safe(np, next_np,
7299 &vport->fc_nodes, nlp_listp) {
7300 if (!NLP_CHK_NODE_ACT(ndlp) ||
7301 (np->nlp_state != NLP_STE_NPR_NODE) ||
7302 !(np->nlp_flag & NLP_NPR_ADISC))
7303 continue;
7304 spin_lock_irq(shost->host_lock);
7305 np->nlp_flag &= ~NLP_NPR_ADISC;
7306 spin_unlock_irq(shost->host_lock);
7307 lpfc_unreg_rpi(vport, np);
7308 }
7309 lpfc_cleanup_pending_mbox(vport);
7310
7311 if (phba->sli_rev == LPFC_SLI_REV4)
7312 lpfc_sli4_unreg_all_rpis(vport);
7313
7314 lpfc_mbx_unreg_vpi(vport);
7315 spin_lock_irq(shost->host_lock);
7316 vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
7317 if (phba->sli_rev == LPFC_SLI_REV4)
7318 vport->fc_flag |= FC_VPORT_NEEDS_INIT_VPI;
7319 else
7320 vport->fc_flag |= FC_LOGO_RCVD_DID_CHNG;
7321 spin_unlock_irq(shost->host_lock);
7322 } else if ((phba->sli_rev == LPFC_SLI_REV4) &&
7323 !(vport->fc_flag & FC_VPORT_NEEDS_REG_VPI)) {
7324 /*
7325 * Driver needs to re-reg VPI in order for f/w
7326 * to update the MAC address.
7327 */
7328 lpfc_register_new_vport(phba, vport, ndlp);
7329 goto out;
7330 }
7331
7332 if (vport->fc_flag & FC_VPORT_NEEDS_INIT_VPI)
7333 lpfc_issue_init_vpi(vport);
7334 else if (vport->fc_flag & FC_VPORT_NEEDS_REG_VPI)
7335 lpfc_register_new_vport(phba, vport, ndlp);
7336 else
7337 lpfc_do_scr_ns_plogi(phba, vport);
7338 goto out;
7339 fdisc_failed:
7340 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
7341 /* Cancel discovery timer */
7342 lpfc_can_disctmo(vport);
7343 lpfc_nlp_put(ndlp);
7344 out:
7345 lpfc_els_free_iocb(phba, cmdiocb);
7346 }
7347
7348 /**
7349 * lpfc_issue_els_fdisc - Issue a fdisc iocb command
7350 * @vport: pointer to a virtual N_Port data structure.
7351 * @ndlp: pointer to a node-list data structure.
7352 * @retry: number of retries to the command IOCB.
7353 *
7354 * This routine prepares and issues a Fabric Discover (FDISC) IOCB to
7355 * a remote node (@ndlp) off a @vport. It uses the lpfc_issue_fabric_iocb()
7356 * routine to issue the IOCB, which makes sure only one outstanding fabric
7357 * IOCB will be sent off HBA at any given time.
7358 *
7359 * Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp
7360 * will be incremented by 1 for holding the ndlp and the reference to ndlp
7361 * will be stored into the context1 field of the IOCB for the completion
7362 * callback function to the FDISC ELS command.
7363 *
7364 * Return code
7365 * 0 - Successfully issued fdisc iocb command
7366 * 1 - Failed to issue fdisc iocb command
7367 **/
7368 static int
7369 lpfc_issue_els_fdisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
7370 uint8_t retry)
7371 {
7372 struct lpfc_hba *phba = vport->phba;
7373 IOCB_t *icmd;
7374 struct lpfc_iocbq *elsiocb;
7375 struct serv_parm *sp;
7376 uint8_t *pcmd;
7377 uint16_t cmdsize;
7378 int did = ndlp->nlp_DID;
7379 int rc;
7380
7381 vport->port_state = LPFC_FDISC;
7382 vport->fc_myDID = 0;
7383 cmdsize = (sizeof(uint32_t) + sizeof(struct serv_parm));
7384 elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp, did,
7385 ELS_CMD_FDISC);
7386 if (!elsiocb) {
7387 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
7388 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
7389 "0255 Issue FDISC: no IOCB\n");
7390 return 1;
7391 }
7392
7393 icmd = &elsiocb->iocb;
7394 icmd->un.elsreq64.myID = 0;
7395 icmd->un.elsreq64.fl = 1;
7396
7397 /*
7398 * SLI3 ports require a different context type value than SLI4.
7399 * Catch SLI3 ports here and override the prep.
7400 */
7401 if (phba->sli_rev == LPFC_SLI_REV3) {
7402 icmd->ulpCt_h = 1;
7403 icmd->ulpCt_l = 0;
7404 }
7405
7406 pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
7407 *((uint32_t *) (pcmd)) = ELS_CMD_FDISC;
7408 pcmd += sizeof(uint32_t); /* CSP Word 1 */
7409 memcpy(pcmd, &vport->phba->pport->fc_sparam, sizeof(struct serv_parm));
7410 sp = (struct serv_parm *) pcmd;
7411 /* Setup CSPs accordingly for Fabric */
7412 sp->cmn.e_d_tov = 0;
7413 sp->cmn.w2.r_a_tov = 0;
7414 sp->cmn.virtual_fabric_support = 0;
7415 sp->cls1.classValid = 0;
7416 sp->cls2.seqDelivery = 1;
7417 sp->cls3.seqDelivery = 1;
7418
7419 pcmd += sizeof(uint32_t); /* CSP Word 2 */
7420 pcmd += sizeof(uint32_t); /* CSP Word 3 */
7421 pcmd += sizeof(uint32_t); /* CSP Word 4 */
7422 pcmd += sizeof(uint32_t); /* Port Name */
7423 memcpy(pcmd, &vport->fc_portname, 8);
7424 pcmd += sizeof(uint32_t); /* Node Name */
7425 pcmd += sizeof(uint32_t); /* Node Name */
7426 memcpy(pcmd, &vport->fc_nodename, 8);
7427
7428 lpfc_set_disctmo(vport);
7429
7430 phba->fc_stat.elsXmitFDISC++;
7431 elsiocb->iocb_cmpl = lpfc_cmpl_els_fdisc;
7432
7433 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
7434 "Issue FDISC: did:x%x",
7435 did, 0, 0);
7436
7437 rc = lpfc_issue_fabric_iocb(phba, elsiocb);
7438 if (rc == IOCB_ERROR) {
7439 lpfc_els_free_iocb(phba, elsiocb);
7440 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
7441 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
7442 "0256 Issue FDISC: Cannot send IOCB\n");
7443 return 1;
7444 }
7445 lpfc_vport_set_state(vport, FC_VPORT_INITIALIZING);
7446 return 0;
7447 }
7448
7449 /**
7450 * lpfc_cmpl_els_npiv_logo - Completion function with vport logo
7451 * @phba: pointer to lpfc hba data structure.
7452 * @cmdiocb: pointer to lpfc command iocb data structure.
7453 * @rspiocb: pointer to lpfc response iocb data structure.
7454 *
7455 * This routine is the completion callback function to the issuing of a LOGO
7456 * ELS command off a vport. It frees the command IOCB and then decrement the
7457 * reference count held on ndlp for this completion function, indicating that
7458 * the reference to the ndlp is no long needed. Note that the
7459 * lpfc_els_free_iocb() routine decrements the ndlp reference held for this
7460 * callback function and an additional explicit ndlp reference decrementation
7461 * will trigger the actual release of the ndlp.
7462 **/
7463 static void
7464 lpfc_cmpl_els_npiv_logo(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
7465 struct lpfc_iocbq *rspiocb)
7466 {
7467 struct lpfc_vport *vport = cmdiocb->vport;
7468 IOCB_t *irsp;
7469 struct lpfc_nodelist *ndlp;
7470 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
7471
7472 ndlp = (struct lpfc_nodelist *)cmdiocb->context1;
7473 irsp = &rspiocb->iocb;
7474 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
7475 "LOGO npiv cmpl: status:x%x/x%x did:x%x",
7476 irsp->ulpStatus, irsp->un.ulpWord[4], irsp->un.rcvels.remoteID);
7477
7478 lpfc_els_free_iocb(phba, cmdiocb);
7479 vport->unreg_vpi_cmpl = VPORT_ERROR;
7480
7481 /* Trigger the release of the ndlp after logo */
7482 lpfc_nlp_put(ndlp);
7483
7484 /* NPIV LOGO completes to NPort <nlp_DID> */
7485 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
7486 "2928 NPIV LOGO completes to NPort x%x "
7487 "Data: x%x x%x x%x x%x\n",
7488 ndlp->nlp_DID, irsp->ulpStatus, irsp->un.ulpWord[4],
7489 irsp->ulpTimeout, vport->num_disc_nodes);
7490
7491 if (irsp->ulpStatus == IOSTAT_SUCCESS) {
7492 spin_lock_irq(shost->host_lock);
7493 vport->fc_flag &= ~FC_FABRIC;
7494 spin_unlock_irq(shost->host_lock);
7495 }
7496 }
7497
7498 /**
7499 * lpfc_issue_els_npiv_logo - Issue a logo off a vport
7500 * @vport: pointer to a virtual N_Port data structure.
7501 * @ndlp: pointer to a node-list data structure.
7502 *
7503 * This routine issues a LOGO ELS command to an @ndlp off a @vport.
7504 *
7505 * Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp
7506 * will be incremented by 1 for holding the ndlp and the reference to ndlp
7507 * will be stored into the context1 field of the IOCB for the completion
7508 * callback function to the LOGO ELS command.
7509 *
7510 * Return codes
7511 * 0 - Successfully issued logo off the @vport
7512 * 1 - Failed to issue logo off the @vport
7513 **/
7514 int
7515 lpfc_issue_els_npiv_logo(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
7516 {
7517 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
7518 struct lpfc_hba *phba = vport->phba;
7519 IOCB_t *icmd;
7520 struct lpfc_iocbq *elsiocb;
7521 uint8_t *pcmd;
7522 uint16_t cmdsize;
7523
7524 cmdsize = 2 * sizeof(uint32_t) + sizeof(struct lpfc_name);
7525 elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, 0, ndlp, ndlp->nlp_DID,
7526 ELS_CMD_LOGO);
7527 if (!elsiocb)
7528 return 1;
7529
7530 icmd = &elsiocb->iocb;
7531 pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
7532 *((uint32_t *) (pcmd)) = ELS_CMD_LOGO;
7533 pcmd += sizeof(uint32_t);
7534
7535 /* Fill in LOGO payload */
7536 *((uint32_t *) (pcmd)) = be32_to_cpu(vport->fc_myDID);
7537 pcmd += sizeof(uint32_t);
7538 memcpy(pcmd, &vport->fc_portname, sizeof(struct lpfc_name));
7539
7540 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
7541 "Issue LOGO npiv did:x%x flg:x%x",
7542 ndlp->nlp_DID, ndlp->nlp_flag, 0);
7543
7544 elsiocb->iocb_cmpl = lpfc_cmpl_els_npiv_logo;
7545 spin_lock_irq(shost->host_lock);
7546 ndlp->nlp_flag |= NLP_LOGO_SND;
7547 spin_unlock_irq(shost->host_lock);
7548 if (lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0) ==
7549 IOCB_ERROR) {
7550 spin_lock_irq(shost->host_lock);
7551 ndlp->nlp_flag &= ~NLP_LOGO_SND;
7552 spin_unlock_irq(shost->host_lock);
7553 lpfc_els_free_iocb(phba, elsiocb);
7554 return 1;
7555 }
7556 return 0;
7557 }
7558
7559 /**
7560 * lpfc_fabric_block_timeout - Handler function to the fabric block timer
7561 * @ptr: holder for the timer function associated data.
7562 *
7563 * This routine is invoked by the fabric iocb block timer after
7564 * timeout. It posts the fabric iocb block timeout event by setting the
7565 * WORKER_FABRIC_BLOCK_TMO bit to work port event bitmap and then invokes
7566 * lpfc_worker_wake_up() routine to wake up the worker thread. It is for
7567 * the worker thread to invoke the lpfc_unblock_fabric_iocbs() on the
7568 * posted event WORKER_FABRIC_BLOCK_TMO.
7569 **/
7570 void
7571 lpfc_fabric_block_timeout(unsigned long ptr)
7572 {
7573 struct lpfc_hba *phba = (struct lpfc_hba *) ptr;
7574 unsigned long iflags;
7575 uint32_t tmo_posted;
7576
7577 spin_lock_irqsave(&phba->pport->work_port_lock, iflags);
7578 tmo_posted = phba->pport->work_port_events & WORKER_FABRIC_BLOCK_TMO;
7579 if (!tmo_posted)
7580 phba->pport->work_port_events |= WORKER_FABRIC_BLOCK_TMO;
7581 spin_unlock_irqrestore(&phba->pport->work_port_lock, iflags);
7582
7583 if (!tmo_posted)
7584 lpfc_worker_wake_up(phba);
7585 return;
7586 }
7587
7588 /**
7589 * lpfc_resume_fabric_iocbs - Issue a fabric iocb from driver internal list
7590 * @phba: pointer to lpfc hba data structure.
7591 *
7592 * This routine issues one fabric iocb from the driver internal list to
7593 * the HBA. It first checks whether it's ready to issue one fabric iocb to
7594 * the HBA (whether there is no outstanding fabric iocb). If so, it shall
7595 * remove one pending fabric iocb from the driver internal list and invokes
7596 * lpfc_sli_issue_iocb() routine to send the fabric iocb to the HBA.
7597 **/
7598 static void
7599 lpfc_resume_fabric_iocbs(struct lpfc_hba *phba)
7600 {
7601 struct lpfc_iocbq *iocb;
7602 unsigned long iflags;
7603 int ret;
7604 IOCB_t *cmd;
7605
7606 repeat:
7607 iocb = NULL;
7608 spin_lock_irqsave(&phba->hbalock, iflags);
7609 /* Post any pending iocb to the SLI layer */
7610 if (atomic_read(&phba->fabric_iocb_count) == 0) {
7611 list_remove_head(&phba->fabric_iocb_list, iocb, typeof(*iocb),
7612 list);
7613 if (iocb)
7614 /* Increment fabric iocb count to hold the position */
7615 atomic_inc(&phba->fabric_iocb_count);
7616 }
7617 spin_unlock_irqrestore(&phba->hbalock, iflags);
7618 if (iocb) {
7619 iocb->fabric_iocb_cmpl = iocb->iocb_cmpl;
7620 iocb->iocb_cmpl = lpfc_cmpl_fabric_iocb;
7621 iocb->iocb_flag |= LPFC_IO_FABRIC;
7622
7623 lpfc_debugfs_disc_trc(iocb->vport, LPFC_DISC_TRC_ELS_CMD,
7624 "Fabric sched1: ste:x%x",
7625 iocb->vport->port_state, 0, 0);
7626
7627 ret = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, iocb, 0);
7628
7629 if (ret == IOCB_ERROR) {
7630 iocb->iocb_cmpl = iocb->fabric_iocb_cmpl;
7631 iocb->fabric_iocb_cmpl = NULL;
7632 iocb->iocb_flag &= ~LPFC_IO_FABRIC;
7633 cmd = &iocb->iocb;
7634 cmd->ulpStatus = IOSTAT_LOCAL_REJECT;
7635 cmd->un.ulpWord[4] = IOERR_SLI_ABORTED;
7636 iocb->iocb_cmpl(phba, iocb, iocb);
7637
7638 atomic_dec(&phba->fabric_iocb_count);
7639 goto repeat;
7640 }
7641 }
7642
7643 return;
7644 }
7645
7646 /**
7647 * lpfc_unblock_fabric_iocbs - Unblock issuing fabric iocb command
7648 * @phba: pointer to lpfc hba data structure.
7649 *
7650 * This routine unblocks the issuing fabric iocb command. The function
7651 * will clear the fabric iocb block bit and then invoke the routine
7652 * lpfc_resume_fabric_iocbs() to issue one of the pending fabric iocb
7653 * from the driver internal fabric iocb list.
7654 **/
7655 void
7656 lpfc_unblock_fabric_iocbs(struct lpfc_hba *phba)
7657 {
7658 clear_bit(FABRIC_COMANDS_BLOCKED, &phba->bit_flags);
7659
7660 lpfc_resume_fabric_iocbs(phba);
7661 return;
7662 }
7663
7664 /**
7665 * lpfc_block_fabric_iocbs - Block issuing fabric iocb command
7666 * @phba: pointer to lpfc hba data structure.
7667 *
7668 * This routine blocks the issuing fabric iocb for a specified amount of
7669 * time (currently 100 ms). This is done by set the fabric iocb block bit
7670 * and set up a timeout timer for 100ms. When the block bit is set, no more
7671 * fabric iocb will be issued out of the HBA.
7672 **/
7673 static void
7674 lpfc_block_fabric_iocbs(struct lpfc_hba *phba)
7675 {
7676 int blocked;
7677
7678 blocked = test_and_set_bit(FABRIC_COMANDS_BLOCKED, &phba->bit_flags);
7679 /* Start a timer to unblock fabric iocbs after 100ms */
7680 if (!blocked)
7681 mod_timer(&phba->fabric_block_timer, jiffies + HZ/10 );
7682
7683 return;
7684 }
7685
7686 /**
7687 * lpfc_cmpl_fabric_iocb - Completion callback function for fabric iocb
7688 * @phba: pointer to lpfc hba data structure.
7689 * @cmdiocb: pointer to lpfc command iocb data structure.
7690 * @rspiocb: pointer to lpfc response iocb data structure.
7691 *
7692 * This routine is the callback function that is put to the fabric iocb's
7693 * callback function pointer (iocb->iocb_cmpl). The original iocb's callback
7694 * function pointer has been stored in iocb->fabric_iocb_cmpl. This callback
7695 * function first restores and invokes the original iocb's callback function
7696 * and then invokes the lpfc_resume_fabric_iocbs() routine to issue the next
7697 * fabric bound iocb from the driver internal fabric iocb list onto the wire.
7698 **/
7699 static void
7700 lpfc_cmpl_fabric_iocb(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
7701 struct lpfc_iocbq *rspiocb)
7702 {
7703 struct ls_rjt stat;
7704
7705 if ((cmdiocb->iocb_flag & LPFC_IO_FABRIC) != LPFC_IO_FABRIC)
7706 BUG();
7707
7708 switch (rspiocb->iocb.ulpStatus) {
7709 case IOSTAT_NPORT_RJT:
7710 case IOSTAT_FABRIC_RJT:
7711 if (rspiocb->iocb.un.ulpWord[4] & RJT_UNAVAIL_TEMP) {
7712 lpfc_block_fabric_iocbs(phba);
7713 }
7714 break;
7715
7716 case IOSTAT_NPORT_BSY:
7717 case IOSTAT_FABRIC_BSY:
7718 lpfc_block_fabric_iocbs(phba);
7719 break;
7720
7721 case IOSTAT_LS_RJT:
7722 stat.un.lsRjtError =
7723 be32_to_cpu(rspiocb->iocb.un.ulpWord[4]);
7724 if ((stat.un.b.lsRjtRsnCode == LSRJT_UNABLE_TPC) ||
7725 (stat.un.b.lsRjtRsnCode == LSRJT_LOGICAL_BSY))
7726 lpfc_block_fabric_iocbs(phba);
7727 break;
7728 }
7729
7730 if (atomic_read(&phba->fabric_iocb_count) == 0)
7731 BUG();
7732
7733 cmdiocb->iocb_cmpl = cmdiocb->fabric_iocb_cmpl;
7734 cmdiocb->fabric_iocb_cmpl = NULL;
7735 cmdiocb->iocb_flag &= ~LPFC_IO_FABRIC;
7736 cmdiocb->iocb_cmpl(phba, cmdiocb, rspiocb);
7737
7738 atomic_dec(&phba->fabric_iocb_count);
7739 if (!test_bit(FABRIC_COMANDS_BLOCKED, &phba->bit_flags)) {
7740 /* Post any pending iocbs to HBA */
7741 lpfc_resume_fabric_iocbs(phba);
7742 }
7743 }
7744
7745 /**
7746 * lpfc_issue_fabric_iocb - Issue a fabric iocb command
7747 * @phba: pointer to lpfc hba data structure.
7748 * @iocb: pointer to lpfc command iocb data structure.
7749 *
7750 * This routine is used as the top-level API for issuing a fabric iocb command
7751 * such as FLOGI and FDISC. To accommodate certain switch fabric, this driver
7752 * function makes sure that only one fabric bound iocb will be outstanding at
7753 * any given time. As such, this function will first check to see whether there
7754 * is already an outstanding fabric iocb on the wire. If so, it will put the
7755 * newly issued iocb onto the driver internal fabric iocb list, waiting to be
7756 * issued later. Otherwise, it will issue the iocb on the wire and update the
7757 * fabric iocb count it indicate that there is one fabric iocb on the wire.
7758 *
7759 * Note, this implementation has a potential sending out fabric IOCBs out of
7760 * order. The problem is caused by the construction of the "ready" boolen does
7761 * not include the condition that the internal fabric IOCB list is empty. As
7762 * such, it is possible a fabric IOCB issued by this routine might be "jump"
7763 * ahead of the fabric IOCBs in the internal list.
7764 *
7765 * Return code
7766 * IOCB_SUCCESS - either fabric iocb put on the list or issued successfully
7767 * IOCB_ERROR - failed to issue fabric iocb
7768 **/
7769 static int
7770 lpfc_issue_fabric_iocb(struct lpfc_hba *phba, struct lpfc_iocbq *iocb)
7771 {
7772 unsigned long iflags;
7773 int ready;
7774 int ret;
7775
7776 if (atomic_read(&phba->fabric_iocb_count) > 1)
7777 BUG();
7778
7779 spin_lock_irqsave(&phba->hbalock, iflags);
7780 ready = atomic_read(&phba->fabric_iocb_count) == 0 &&
7781 !test_bit(FABRIC_COMANDS_BLOCKED, &phba->bit_flags);
7782
7783 if (ready)
7784 /* Increment fabric iocb count to hold the position */
7785 atomic_inc(&phba->fabric_iocb_count);
7786 spin_unlock_irqrestore(&phba->hbalock, iflags);
7787 if (ready) {
7788 iocb->fabric_iocb_cmpl = iocb->iocb_cmpl;
7789 iocb->iocb_cmpl = lpfc_cmpl_fabric_iocb;
7790 iocb->iocb_flag |= LPFC_IO_FABRIC;
7791
7792 lpfc_debugfs_disc_trc(iocb->vport, LPFC_DISC_TRC_ELS_CMD,
7793 "Fabric sched2: ste:x%x",
7794 iocb->vport->port_state, 0, 0);
7795
7796 ret = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, iocb, 0);
7797
7798 if (ret == IOCB_ERROR) {
7799 iocb->iocb_cmpl = iocb->fabric_iocb_cmpl;
7800 iocb->fabric_iocb_cmpl = NULL;
7801 iocb->iocb_flag &= ~LPFC_IO_FABRIC;
7802 atomic_dec(&phba->fabric_iocb_count);
7803 }
7804 } else {
7805 spin_lock_irqsave(&phba->hbalock, iflags);
7806 list_add_tail(&iocb->list, &phba->fabric_iocb_list);
7807 spin_unlock_irqrestore(&phba->hbalock, iflags);
7808 ret = IOCB_SUCCESS;
7809 }
7810 return ret;
7811 }
7812
7813 /**
7814 * lpfc_fabric_abort_vport - Abort a vport's iocbs from driver fabric iocb list
7815 * @vport: pointer to a virtual N_Port data structure.
7816 *
7817 * This routine aborts all the IOCBs associated with a @vport from the
7818 * driver internal fabric IOCB list. The list contains fabric IOCBs to be
7819 * issued to the ELS IOCB ring. This abort function walks the fabric IOCB
7820 * list, removes each IOCB associated with the @vport off the list, set the
7821 * status feild to IOSTAT_LOCAL_REJECT, and invokes the callback function
7822 * associated with the IOCB.
7823 **/
7824 static void lpfc_fabric_abort_vport(struct lpfc_vport *vport)
7825 {
7826 LIST_HEAD(completions);
7827 struct lpfc_hba *phba = vport->phba;
7828 struct lpfc_iocbq *tmp_iocb, *piocb;
7829
7830 spin_lock_irq(&phba->hbalock);
7831 list_for_each_entry_safe(piocb, tmp_iocb, &phba->fabric_iocb_list,
7832 list) {
7833
7834 if (piocb->vport != vport)
7835 continue;
7836
7837 list_move_tail(&piocb->list, &completions);
7838 }
7839 spin_unlock_irq(&phba->hbalock);
7840
7841 /* Cancel all the IOCBs from the completions list */
7842 lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT,
7843 IOERR_SLI_ABORTED);
7844 }
7845
7846 /**
7847 * lpfc_fabric_abort_nport - Abort a ndlp's iocbs from driver fabric iocb list
7848 * @ndlp: pointer to a node-list data structure.
7849 *
7850 * This routine aborts all the IOCBs associated with an @ndlp from the
7851 * driver internal fabric IOCB list. The list contains fabric IOCBs to be
7852 * issued to the ELS IOCB ring. This abort function walks the fabric IOCB
7853 * list, removes each IOCB associated with the @ndlp off the list, set the
7854 * status feild to IOSTAT_LOCAL_REJECT, and invokes the callback function
7855 * associated with the IOCB.
7856 **/
7857 void lpfc_fabric_abort_nport(struct lpfc_nodelist *ndlp)
7858 {
7859 LIST_HEAD(completions);
7860 struct lpfc_hba *phba = ndlp->phba;
7861 struct lpfc_iocbq *tmp_iocb, *piocb;
7862 struct lpfc_sli_ring *pring = &phba->sli.ring[LPFC_ELS_RING];
7863
7864 spin_lock_irq(&phba->hbalock);
7865 list_for_each_entry_safe(piocb, tmp_iocb, &phba->fabric_iocb_list,
7866 list) {
7867 if ((lpfc_check_sli_ndlp(phba, pring, piocb, ndlp))) {
7868
7869 list_move_tail(&piocb->list, &completions);
7870 }
7871 }
7872 spin_unlock_irq(&phba->hbalock);
7873
7874 /* Cancel all the IOCBs from the completions list */
7875 lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT,
7876 IOERR_SLI_ABORTED);
7877 }
7878
7879 /**
7880 * lpfc_fabric_abort_hba - Abort all iocbs on driver fabric iocb list
7881 * @phba: pointer to lpfc hba data structure.
7882 *
7883 * This routine aborts all the IOCBs currently on the driver internal
7884 * fabric IOCB list. The list contains fabric IOCBs to be issued to the ELS
7885 * IOCB ring. This function takes the entire IOCB list off the fabric IOCB
7886 * list, removes IOCBs off the list, set the status feild to
7887 * IOSTAT_LOCAL_REJECT, and invokes the callback function associated with
7888 * the IOCB.
7889 **/
7890 void lpfc_fabric_abort_hba(struct lpfc_hba *phba)
7891 {
7892 LIST_HEAD(completions);
7893
7894 spin_lock_irq(&phba->hbalock);
7895 list_splice_init(&phba->fabric_iocb_list, &completions);
7896 spin_unlock_irq(&phba->hbalock);
7897
7898 /* Cancel all the IOCBs from the completions list */
7899 lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT,
7900 IOERR_SLI_ABORTED);
7901 }
7902
7903 /**
7904 * lpfc_sli4_vport_delete_els_xri_aborted -Remove all ndlp references for vport
7905 * @vport: pointer to lpfc vport data structure.
7906 *
7907 * This routine is invoked by the vport cleanup for deletions and the cleanup
7908 * for an ndlp on removal.
7909 **/
7910 void
7911 lpfc_sli4_vport_delete_els_xri_aborted(struct lpfc_vport *vport)
7912 {
7913 struct lpfc_hba *phba = vport->phba;
7914 struct lpfc_sglq *sglq_entry = NULL, *sglq_next = NULL;
7915 unsigned long iflag = 0;
7916
7917 spin_lock_irqsave(&phba->hbalock, iflag);
7918 spin_lock(&phba->sli4_hba.abts_sgl_list_lock);
7919 list_for_each_entry_safe(sglq_entry, sglq_next,
7920 &phba->sli4_hba.lpfc_abts_els_sgl_list, list) {
7921 if (sglq_entry->ndlp && sglq_entry->ndlp->vport == vport)
7922 sglq_entry->ndlp = NULL;
7923 }
7924 spin_unlock(&phba->sli4_hba.abts_sgl_list_lock);
7925 spin_unlock_irqrestore(&phba->hbalock, iflag);
7926 return;
7927 }
7928
7929 /**
7930 * lpfc_sli4_els_xri_aborted - Slow-path process of els xri abort
7931 * @phba: pointer to lpfc hba data structure.
7932 * @axri: pointer to the els xri abort wcqe structure.
7933 *
7934 * This routine is invoked by the worker thread to process a SLI4 slow-path
7935 * ELS aborted xri.
7936 **/
7937 void
7938 lpfc_sli4_els_xri_aborted(struct lpfc_hba *phba,
7939 struct sli4_wcqe_xri_aborted *axri)
7940 {
7941 uint16_t xri = bf_get(lpfc_wcqe_xa_xri, axri);
7942 uint16_t rxid = bf_get(lpfc_wcqe_xa_remote_xid, axri);
7943 uint16_t lxri = 0;
7944
7945 struct lpfc_sglq *sglq_entry = NULL, *sglq_next = NULL;
7946 unsigned long iflag = 0;
7947 struct lpfc_nodelist *ndlp;
7948 struct lpfc_sli_ring *pring = &phba->sli.ring[LPFC_ELS_RING];
7949
7950 spin_lock_irqsave(&phba->hbalock, iflag);
7951 spin_lock(&phba->sli4_hba.abts_sgl_list_lock);
7952 list_for_each_entry_safe(sglq_entry, sglq_next,
7953 &phba->sli4_hba.lpfc_abts_els_sgl_list, list) {
7954 if (sglq_entry->sli4_xritag == xri) {
7955 list_del(&sglq_entry->list);
7956 ndlp = sglq_entry->ndlp;
7957 sglq_entry->ndlp = NULL;
7958 list_add_tail(&sglq_entry->list,
7959 &phba->sli4_hba.lpfc_sgl_list);
7960 sglq_entry->state = SGL_FREED;
7961 spin_unlock(&phba->sli4_hba.abts_sgl_list_lock);
7962 spin_unlock_irqrestore(&phba->hbalock, iflag);
7963 lpfc_set_rrq_active(phba, ndlp,
7964 sglq_entry->sli4_lxritag,
7965 rxid, 1);
7966
7967 /* Check if TXQ queue needs to be serviced */
7968 if (pring->txq_cnt)
7969 lpfc_worker_wake_up(phba);
7970 return;
7971 }
7972 }
7973 spin_unlock(&phba->sli4_hba.abts_sgl_list_lock);
7974 lxri = lpfc_sli4_xri_inrange(phba, xri);
7975 if (lxri == NO_XRI) {
7976 spin_unlock_irqrestore(&phba->hbalock, iflag);
7977 return;
7978 }
7979 sglq_entry = __lpfc_get_active_sglq(phba, lxri);
7980 if (!sglq_entry || (sglq_entry->sli4_xritag != xri)) {
7981 spin_unlock_irqrestore(&phba->hbalock, iflag);
7982 return;
7983 }
7984 sglq_entry->state = SGL_XRI_ABORTED;
7985 spin_unlock_irqrestore(&phba->hbalock, iflag);
7986 return;
7987 }
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