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Merge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost
[cris-mirror.git] / drivers / scsi / lpfc / lpfc_nportdisc.c
blobd841aa42f607e60b9495450caf6e01863ef7d5a0
1 /*******************************************************************
2 * This file is part of the Emulex Linux Device Driver for *
3 * Fibre Channel Host Bus Adapters. *
4 * Copyright (C) 2017 Broadcom. All Rights Reserved. The term *
5 * “Broadcom” refers to Broadcom Limited and/or its subsidiaries. *
6 * Copyright (C) 2004-2016 Emulex. All rights reserved. *
7 * EMULEX and SLI are trademarks of Emulex. *
8 * www.broadcom.com *
9 * Portions Copyright (C) 2004-2005 Christoph Hellwig *
10 * *
11 * This program is free software; you can redistribute it and/or *
12 * modify it under the terms of version 2 of the GNU General *
13 * Public License as published by the Free Software Foundation. *
14 * This program is distributed in the hope that it will be useful. *
15 * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND *
16 * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, *
17 * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE *
18 * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD *
19 * TO BE LEGALLY INVALID. See the GNU General Public License for *
20 * more details, a copy of which can be found in the file COPYING *
21 * included with this package. *
22 *******************************************************************/
23
24 #include <linux/blkdev.h>
25 #include <linux/pci.h>
26 #include <linux/slab.h>
27 #include <linux/interrupt.h>
28
29 #include <scsi/scsi.h>
30 #include <scsi/scsi_device.h>
31 #include <scsi/scsi_host.h>
32 #include <scsi/scsi_transport_fc.h>
33 #include <scsi/fc/fc_fs.h>
34
35 #include <linux/nvme-fc-driver.h>
36
37 #include "lpfc_hw4.h"
38 #include "lpfc_hw.h"
39 #include "lpfc_sli.h"
40 #include "lpfc_sli4.h"
41 #include "lpfc_nl.h"
42 #include "lpfc_disc.h"
43 #include "lpfc.h"
44 #include "lpfc_scsi.h"
45 #include "lpfc_nvme.h"
46 #include "lpfc_logmsg.h"
47 #include "lpfc_crtn.h"
48 #include "lpfc_vport.h"
49 #include "lpfc_debugfs.h"
50
51
52 /* Called to verify a rcv'ed ADISC was intended for us. */
53 static int
54 lpfc_check_adisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
55 struct lpfc_name *nn, struct lpfc_name *pn)
56 {
57 /* First, we MUST have a RPI registered */
58 if (!(ndlp->nlp_flag & NLP_RPI_REGISTERED))
59 return 0;
60
61 /* Compare the ADISC rsp WWNN / WWPN matches our internal node
62 * table entry for that node.
63 */
64 if (memcmp(nn, &ndlp->nlp_nodename, sizeof (struct lpfc_name)))
65 return 0;
66
67 if (memcmp(pn, &ndlp->nlp_portname, sizeof (struct lpfc_name)))
68 return 0;
69
70 /* we match, return success */
71 return 1;
72 }
73
74 int
75 lpfc_check_sparm(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
76 struct serv_parm *sp, uint32_t class, int flogi)
77 {
78 volatile struct serv_parm *hsp = &vport->fc_sparam;
79 uint16_t hsp_value, ssp_value = 0;
80
81 /*
82 * The receive data field size and buffer-to-buffer receive data field
83 * size entries are 16 bits but are represented as two 8-bit fields in
84 * the driver data structure to account for rsvd bits and other control
85 * bits. Reconstruct and compare the fields as a 16-bit values before
86 * correcting the byte values.
87 */
88 if (sp->cls1.classValid) {
89 if (!flogi) {
90 hsp_value = ((hsp->cls1.rcvDataSizeMsb << 8) |
91 hsp->cls1.rcvDataSizeLsb);
92 ssp_value = ((sp->cls1.rcvDataSizeMsb << 8) |
93 sp->cls1.rcvDataSizeLsb);
94 if (!ssp_value)
95 goto bad_service_param;
96 if (ssp_value > hsp_value) {
97 sp->cls1.rcvDataSizeLsb =
98 hsp->cls1.rcvDataSizeLsb;
99 sp->cls1.rcvDataSizeMsb =
100 hsp->cls1.rcvDataSizeMsb;
101 }
102 }
103 } else if (class == CLASS1)
104 goto bad_service_param;
105 if (sp->cls2.classValid) {
106 if (!flogi) {
107 hsp_value = ((hsp->cls2.rcvDataSizeMsb << 8) |
108 hsp->cls2.rcvDataSizeLsb);
109 ssp_value = ((sp->cls2.rcvDataSizeMsb << 8) |
110 sp->cls2.rcvDataSizeLsb);
111 if (!ssp_value)
112 goto bad_service_param;
113 if (ssp_value > hsp_value) {
114 sp->cls2.rcvDataSizeLsb =
115 hsp->cls2.rcvDataSizeLsb;
116 sp->cls2.rcvDataSizeMsb =
117 hsp->cls2.rcvDataSizeMsb;
118 }
119 }
120 } else if (class == CLASS2)
121 goto bad_service_param;
122 if (sp->cls3.classValid) {
123 if (!flogi) {
124 hsp_value = ((hsp->cls3.rcvDataSizeMsb << 8) |
125 hsp->cls3.rcvDataSizeLsb);
126 ssp_value = ((sp->cls3.rcvDataSizeMsb << 8) |
127 sp->cls3.rcvDataSizeLsb);
128 if (!ssp_value)
129 goto bad_service_param;
130 if (ssp_value > hsp_value) {
131 sp->cls3.rcvDataSizeLsb =
132 hsp->cls3.rcvDataSizeLsb;
133 sp->cls3.rcvDataSizeMsb =
134 hsp->cls3.rcvDataSizeMsb;
135 }
136 }
137 } else if (class == CLASS3)
138 goto bad_service_param;
139
140 /*
141 * Preserve the upper four bits of the MSB from the PLOGI response.
142 * These bits contain the Buffer-to-Buffer State Change Number
143 * from the target and need to be passed to the FW.
144 */
145 hsp_value = (hsp->cmn.bbRcvSizeMsb << 8) | hsp->cmn.bbRcvSizeLsb;
146 ssp_value = (sp->cmn.bbRcvSizeMsb << 8) | sp->cmn.bbRcvSizeLsb;
147 if (ssp_value > hsp_value) {
148 sp->cmn.bbRcvSizeLsb = hsp->cmn.bbRcvSizeLsb;
149 sp->cmn.bbRcvSizeMsb = (sp->cmn.bbRcvSizeMsb & 0xF0) |
150 (hsp->cmn.bbRcvSizeMsb & 0x0F);
151 }
152
153 memcpy(&ndlp->nlp_nodename, &sp->nodeName, sizeof (struct lpfc_name));
154 memcpy(&ndlp->nlp_portname, &sp->portName, sizeof (struct lpfc_name));
155 return 1;
156 bad_service_param:
157 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
158 "0207 Device %x "
159 "(%02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x) sent "
160 "invalid service parameters. Ignoring device.\n",
161 ndlp->nlp_DID,
162 sp->nodeName.u.wwn[0], sp->nodeName.u.wwn[1],
163 sp->nodeName.u.wwn[2], sp->nodeName.u.wwn[3],
164 sp->nodeName.u.wwn[4], sp->nodeName.u.wwn[5],
165 sp->nodeName.u.wwn[6], sp->nodeName.u.wwn[7]);
166 return 0;
167 }
168
169 static void *
170 lpfc_check_elscmpl_iocb(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
171 struct lpfc_iocbq *rspiocb)
172 {
173 struct lpfc_dmabuf *pcmd, *prsp;
174 uint32_t *lp;
175 void *ptr = NULL;
176 IOCB_t *irsp;
177
178 irsp = &rspiocb->iocb;
179 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
180
181 /* For lpfc_els_abort, context2 could be zero'ed to delay
182 * freeing associated memory till after ABTS completes.
183 */
184 if (pcmd) {
185 prsp = list_get_first(&pcmd->list, struct lpfc_dmabuf,
186 list);
187 if (prsp) {
188 lp = (uint32_t *) prsp->virt;
189 ptr = (void *)((uint8_t *)lp + sizeof(uint32_t));
190 }
191 } else {
192 /* Force ulpStatus error since we are returning NULL ptr */
193 if (!(irsp->ulpStatus)) {
194 irsp->ulpStatus = IOSTAT_LOCAL_REJECT;
195 irsp->un.ulpWord[4] = IOERR_SLI_ABORTED;
196 }
197 ptr = NULL;
198 }
199 return ptr;
200 }
201
202
203
204 /*
205 * Free resources / clean up outstanding I/Os
206 * associated with a LPFC_NODELIST entry. This
207 * routine effectively results in a "software abort".
208 */
209 void
210 lpfc_els_abort(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
211 {
212 LIST_HEAD(abort_list);
213 struct lpfc_sli_ring *pring;
214 struct lpfc_iocbq *iocb, *next_iocb;
215
216 pring = lpfc_phba_elsring(phba);
217
218 /* In case of error recovery path, we might have a NULL pring here */
219 if (unlikely(!pring))
220 return;
221
222 /* Abort outstanding I/O on NPort <nlp_DID> */
223 lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_DISCOVERY,
224 "2819 Abort outstanding I/O on NPort x%x "
225 "Data: x%x x%x x%x\n",
226 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
227 ndlp->nlp_rpi);
228 /* Clean up all fabric IOs first.*/
229 lpfc_fabric_abort_nport(ndlp);
230
231 /*
232 * Lock the ELS ring txcmplq for SLI3/SLI4 and build a local list
233 * of all ELS IOs that need an ABTS. The IOs need to stay on the
234 * txcmplq so that the abort operation completes them successfully.
235 */
236 spin_lock_irq(&phba->hbalock);
237 if (phba->sli_rev == LPFC_SLI_REV4)
238 spin_lock(&pring->ring_lock);
239 list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq, list) {
240 /* Add to abort_list on on NDLP match. */
241 if (lpfc_check_sli_ndlp(phba, pring, iocb, ndlp))
242 list_add_tail(&iocb->dlist, &abort_list);
243 }
244 if (phba->sli_rev == LPFC_SLI_REV4)
245 spin_unlock(&pring->ring_lock);
246 spin_unlock_irq(&phba->hbalock);
247
248 /* Abort the targeted IOs and remove them from the abort list. */
249 list_for_each_entry_safe(iocb, next_iocb, &abort_list, dlist) {
250 spin_lock_irq(&phba->hbalock);
251 list_del_init(&iocb->dlist);
252 lpfc_sli_issue_abort_iotag(phba, pring, iocb);
253 spin_unlock_irq(&phba->hbalock);
254 }
255
256 INIT_LIST_HEAD(&abort_list);
257
258 /* Now process the txq */
259 spin_lock_irq(&phba->hbalock);
260 if (phba->sli_rev == LPFC_SLI_REV4)
261 spin_lock(&pring->ring_lock);
262
263 list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) {
264 /* Check to see if iocb matches the nport we are looking for */
265 if (lpfc_check_sli_ndlp(phba, pring, iocb, ndlp)) {
266 list_del_init(&iocb->list);
267 list_add_tail(&iocb->list, &abort_list);
268 }
269 }
270
271 if (phba->sli_rev == LPFC_SLI_REV4)
272 spin_unlock(&pring->ring_lock);
273 spin_unlock_irq(&phba->hbalock);
274
275 /* Cancel all the IOCBs from the completions list */
276 lpfc_sli_cancel_iocbs(phba, &abort_list,
277 IOSTAT_LOCAL_REJECT, IOERR_SLI_ABORTED);
278
279 lpfc_cancel_retry_delay_tmo(phba->pport, ndlp);
280 }
281
282 static int
283 lpfc_rcv_plogi(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
284 struct lpfc_iocbq *cmdiocb)
285 {
286 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
287 struct lpfc_hba *phba = vport->phba;
288 struct lpfc_dmabuf *pcmd;
289 uint64_t nlp_portwwn = 0;
290 uint32_t *lp;
291 IOCB_t *icmd;
292 struct serv_parm *sp;
293 uint32_t ed_tov;
294 LPFC_MBOXQ_t *mbox;
295 struct ls_rjt stat;
296 uint32_t vid, flag;
297 int rc;
298
299 memset(&stat, 0, sizeof (struct ls_rjt));
300 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
301 lp = (uint32_t *) pcmd->virt;
302 sp = (struct serv_parm *) ((uint8_t *) lp + sizeof (uint32_t));
303 if (wwn_to_u64(sp->portName.u.wwn) == 0) {
304 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
305 "0140 PLOGI Reject: invalid nname\n");
306 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
307 stat.un.b.lsRjtRsnCodeExp = LSEXP_INVALID_PNAME;
308 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
309 NULL);
310 return 0;
311 }
312 if (wwn_to_u64(sp->nodeName.u.wwn) == 0) {
313 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
314 "0141 PLOGI Reject: invalid pname\n");
315 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
316 stat.un.b.lsRjtRsnCodeExp = LSEXP_INVALID_NNAME;
317 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
318 NULL);
319 return 0;
320 }
321
322 nlp_portwwn = wwn_to_u64(ndlp->nlp_portname.u.wwn);
323 if ((lpfc_check_sparm(vport, ndlp, sp, CLASS3, 0) == 0)) {
324 /* Reject this request because invalid parameters */
325 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
326 stat.un.b.lsRjtRsnCodeExp = LSEXP_SPARM_OPTIONS;
327 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
328 NULL);
329 return 0;
330 }
331 icmd = &cmdiocb->iocb;
332
333 /* PLOGI chkparm OK */
334 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
335 "0114 PLOGI chkparm OK Data: x%x x%x x%x "
336 "x%x x%x x%x\n",
337 ndlp->nlp_DID, ndlp->nlp_state, ndlp->nlp_flag,
338 ndlp->nlp_rpi, vport->port_state,
339 vport->fc_flag);
340
341 if (vport->cfg_fcp_class == 2 && sp->cls2.classValid)
342 ndlp->nlp_fcp_info |= CLASS2;
343 else
344 ndlp->nlp_fcp_info |= CLASS3;
345
346 ndlp->nlp_class_sup = 0;
347 if (sp->cls1.classValid)
348 ndlp->nlp_class_sup |= FC_COS_CLASS1;
349 if (sp->cls2.classValid)
350 ndlp->nlp_class_sup |= FC_COS_CLASS2;
351 if (sp->cls3.classValid)
352 ndlp->nlp_class_sup |= FC_COS_CLASS3;
353 if (sp->cls4.classValid)
354 ndlp->nlp_class_sup |= FC_COS_CLASS4;
355 ndlp->nlp_maxframe =
356 ((sp->cmn.bbRcvSizeMsb & 0x0F) << 8) | sp->cmn.bbRcvSizeLsb;
357
358 /* if already logged in, do implicit logout */
359 switch (ndlp->nlp_state) {
360 case NLP_STE_NPR_NODE:
361 if (!(ndlp->nlp_flag & NLP_NPR_ADISC))
362 break;
363 case NLP_STE_REG_LOGIN_ISSUE:
364 case NLP_STE_PRLI_ISSUE:
365 case NLP_STE_UNMAPPED_NODE:
366 case NLP_STE_MAPPED_NODE:
367 /* For initiators, lpfc_plogi_confirm_nport skips fabric did.
368 * For target mode, execute implicit logo.
369 * Fabric nodes go into NPR.
370 */
371 if (!(ndlp->nlp_type & NLP_FABRIC) &&
372 !(phba->nvmet_support)) {
373 lpfc_els_rsp_acc(vport, ELS_CMD_PLOGI, cmdiocb,
374 ndlp, NULL);
375 return 1;
376 }
377 if (nlp_portwwn != 0 &&
378 nlp_portwwn != wwn_to_u64(sp->portName.u.wwn))
379 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
380 "0143 PLOGI recv'd from DID: x%x "
381 "WWPN changed: old %llx new %llx\n",
382 ndlp->nlp_DID,
383 (unsigned long long)nlp_portwwn,
384 (unsigned long long)
385 wwn_to_u64(sp->portName.u.wwn));
386
387 ndlp->nlp_prev_state = ndlp->nlp_state;
388 /* rport needs to be unregistered first */
389 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
390 break;
391 }
392
393 ndlp->nlp_type &= ~(NLP_FCP_TARGET | NLP_FCP_INITIATOR);
394 ndlp->nlp_type &= ~(NLP_NVME_TARGET | NLP_NVME_INITIATOR);
395 ndlp->nlp_fcp_info &= ~NLP_FCP_2_DEVICE;
396 ndlp->nlp_flag &= ~NLP_FIRSTBURST;
397
398 /* Check for Nport to NPort pt2pt protocol */
399 if ((vport->fc_flag & FC_PT2PT) &&
400 !(vport->fc_flag & FC_PT2PT_PLOGI)) {
401 /* rcv'ed PLOGI decides what our NPortId will be */
402 vport->fc_myDID = icmd->un.rcvels.parmRo;
403
404 ed_tov = be32_to_cpu(sp->cmn.e_d_tov);
405 if (sp->cmn.edtovResolution) {
406 /* E_D_TOV ticks are in nanoseconds */
407 ed_tov = (phba->fc_edtov + 999999) / 1000000;
408 }
409
410 /*
411 * For pt-to-pt, use the larger EDTOV
412 * RATOV = 2 * EDTOV
413 */
414 if (ed_tov > phba->fc_edtov)
415 phba->fc_edtov = ed_tov;
416 phba->fc_ratov = (2 * phba->fc_edtov) / 1000;
417
418 memcpy(&phba->fc_fabparam, sp, sizeof(struct serv_parm));
419
420 /* Issue config_link / reg_vfi to account for updated TOV's */
421
422 if (phba->sli_rev == LPFC_SLI_REV4)
423 lpfc_issue_reg_vfi(vport);
424 else {
425 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
426 if (mbox == NULL)
427 goto out;
428 lpfc_config_link(phba, mbox);
429 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
430 mbox->vport = vport;
431 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
432 if (rc == MBX_NOT_FINISHED) {
433 mempool_free(mbox, phba->mbox_mem_pool);
434 goto out;
435 }
436 }
437
438 lpfc_can_disctmo(vport);
439 }
440
441 ndlp->nlp_flag &= ~NLP_SUPPRESS_RSP;
442 if ((phba->sli.sli_flag & LPFC_SLI_SUPPRESS_RSP) &&
443 sp->cmn.valid_vendor_ver_level) {
444 vid = be32_to_cpu(sp->un.vv.vid);
445 flag = be32_to_cpu(sp->un.vv.flags);
446 if ((vid == LPFC_VV_EMLX_ID) && (flag & LPFC_VV_SUPPRESS_RSP))
447 ndlp->nlp_flag |= NLP_SUPPRESS_RSP;
448 }
449
450 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
451 if (!mbox)
452 goto out;
453
454 /* Registering an existing RPI behaves differently for SLI3 vs SLI4 */
455 if (phba->sli_rev == LPFC_SLI_REV4)
456 lpfc_unreg_rpi(vport, ndlp);
457
458 rc = lpfc_reg_rpi(phba, vport->vpi, icmd->un.rcvels.remoteID,
459 (uint8_t *) sp, mbox, ndlp->nlp_rpi);
460 if (rc) {
461 mempool_free(mbox, phba->mbox_mem_pool);
462 goto out;
463 }
464
465 /* ACC PLOGI rsp command needs to execute first,
466 * queue this mbox command to be processed later.
467 */
468 mbox->mbox_cmpl = lpfc_mbx_cmpl_reg_login;
469 /*
470 * mbox->context2 = lpfc_nlp_get(ndlp) deferred until mailbox
471 * command issued in lpfc_cmpl_els_acc().
472 */
473 mbox->vport = vport;
474 spin_lock_irq(shost->host_lock);
475 ndlp->nlp_flag |= (NLP_ACC_REGLOGIN | NLP_RCV_PLOGI);
476 spin_unlock_irq(shost->host_lock);
477
478 /*
479 * If there is an outstanding PLOGI issued, abort it before
480 * sending ACC rsp for received PLOGI. If pending plogi
481 * is not canceled here, the plogi will be rejected by
482 * remote port and will be retried. On a configuration with
483 * single discovery thread, this will cause a huge delay in
484 * discovery. Also this will cause multiple state machines
485 * running in parallel for this node.
486 */
487 if (ndlp->nlp_state == NLP_STE_PLOGI_ISSUE) {
488 /* software abort outstanding PLOGI */
489 lpfc_els_abort(phba, ndlp);
490 }
491
492 if ((vport->port_type == LPFC_NPIV_PORT &&
493 vport->cfg_restrict_login)) {
494
495 /* In order to preserve RPIs, we want to cleanup
496 * the default RPI the firmware created to rcv
497 * this ELS request. The only way to do this is
498 * to register, then unregister the RPI.
499 */
500 spin_lock_irq(shost->host_lock);
501 ndlp->nlp_flag |= NLP_RM_DFLT_RPI;
502 spin_unlock_irq(shost->host_lock);
503 stat.un.b.lsRjtRsnCode = LSRJT_INVALID_CMD;
504 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
505 rc = lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb,
506 ndlp, mbox);
507 if (rc)
508 mempool_free(mbox, phba->mbox_mem_pool);
509 return 1;
510 }
511 rc = lpfc_els_rsp_acc(vport, ELS_CMD_PLOGI, cmdiocb, ndlp, mbox);
512 if (rc)
513 mempool_free(mbox, phba->mbox_mem_pool);
514 return 1;
515 out:
516 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
517 stat.un.b.lsRjtRsnCodeExp = LSEXP_OUT_OF_RESOURCE;
518 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
519 return 0;
520 }
521
522 /**
523 * lpfc_mbx_cmpl_resume_rpi - Resume RPI completion routine
524 * @phba: pointer to lpfc hba data structure.
525 * @mboxq: pointer to mailbox object
526 *
527 * This routine is invoked to issue a completion to a rcv'ed
528 * ADISC or PDISC after the paused RPI has been resumed.
529 **/
530 static void
531 lpfc_mbx_cmpl_resume_rpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
532 {
533 struct lpfc_vport *vport;
534 struct lpfc_iocbq *elsiocb;
535 struct lpfc_nodelist *ndlp;
536 uint32_t cmd;
537
538 elsiocb = (struct lpfc_iocbq *)mboxq->context1;
539 ndlp = (struct lpfc_nodelist *) mboxq->context2;
540 vport = mboxq->vport;
541 cmd = elsiocb->drvrTimeout;
542
543 if (cmd == ELS_CMD_ADISC) {
544 lpfc_els_rsp_adisc_acc(vport, elsiocb, ndlp);
545 } else {
546 lpfc_els_rsp_acc(vport, ELS_CMD_PLOGI, elsiocb,
547 ndlp, NULL);
548 }
549 kfree(elsiocb);
550 mempool_free(mboxq, phba->mbox_mem_pool);
551 }
552
553 static int
554 lpfc_rcv_padisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
555 struct lpfc_iocbq *cmdiocb)
556 {
557 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
558 struct lpfc_iocbq *elsiocb;
559 struct lpfc_dmabuf *pcmd;
560 struct serv_parm *sp;
561 struct lpfc_name *pnn, *ppn;
562 struct ls_rjt stat;
563 ADISC *ap;
564 IOCB_t *icmd;
565 uint32_t *lp;
566 uint32_t cmd;
567
568 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
569 lp = (uint32_t *) pcmd->virt;
570
571 cmd = *lp++;
572 if (cmd == ELS_CMD_ADISC) {
573 ap = (ADISC *) lp;
574 pnn = (struct lpfc_name *) & ap->nodeName;
575 ppn = (struct lpfc_name *) & ap->portName;
576 } else {
577 sp = (struct serv_parm *) lp;
578 pnn = (struct lpfc_name *) & sp->nodeName;
579 ppn = (struct lpfc_name *) & sp->portName;
580 }
581
582 icmd = &cmdiocb->iocb;
583 if (icmd->ulpStatus == 0 && lpfc_check_adisc(vport, ndlp, pnn, ppn)) {
584
585 /*
586 * As soon as we send ACC, the remote NPort can
587 * start sending us data. Thus, for SLI4 we must
588 * resume the RPI before the ACC goes out.
589 */
590 if (vport->phba->sli_rev == LPFC_SLI_REV4) {
591 elsiocb = kmalloc(sizeof(struct lpfc_iocbq),
592 GFP_KERNEL);
593 if (elsiocb) {
594
595 /* Save info from cmd IOCB used in rsp */
596 memcpy((uint8_t *)elsiocb, (uint8_t *)cmdiocb,
597 sizeof(struct lpfc_iocbq));
598
599 /* Save the ELS cmd */
600 elsiocb->drvrTimeout = cmd;
601
602 lpfc_sli4_resume_rpi(ndlp,
603 lpfc_mbx_cmpl_resume_rpi, elsiocb);
604 goto out;
605 }
606 }
607
608 if (cmd == ELS_CMD_ADISC) {
609 lpfc_els_rsp_adisc_acc(vport, cmdiocb, ndlp);
610 } else {
611 lpfc_els_rsp_acc(vport, ELS_CMD_PLOGI, cmdiocb,
612 ndlp, NULL);
613 }
614 out:
615 /* If we are authenticated, move to the proper state */
616 if (ndlp->nlp_type & NLP_FCP_TARGET)
617 lpfc_nlp_set_state(vport, ndlp, NLP_STE_MAPPED_NODE);
618 else
619 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
620
621 return 1;
622 }
623 /* Reject this request because invalid parameters */
624 stat.un.b.lsRjtRsvd0 = 0;
625 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
626 stat.un.b.lsRjtRsnCodeExp = LSEXP_SPARM_OPTIONS;
627 stat.un.b.vendorUnique = 0;
628 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
629
630 /* 1 sec timeout */
631 mod_timer(&ndlp->nlp_delayfunc, jiffies + msecs_to_jiffies(1000));
632
633 spin_lock_irq(shost->host_lock);
634 ndlp->nlp_flag |= NLP_DELAY_TMO;
635 spin_unlock_irq(shost->host_lock);
636 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
637 ndlp->nlp_prev_state = ndlp->nlp_state;
638 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
639 return 0;
640 }
641
642 static int
643 lpfc_rcv_logo(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
644 struct lpfc_iocbq *cmdiocb, uint32_t els_cmd)
645 {
646 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
647 struct lpfc_hba *phba = vport->phba;
648 struct lpfc_vport **vports;
649 int i, active_vlink_present = 0 ;
650
651 /* Put ndlp in NPR state with 1 sec timeout for plogi, ACC logo */
652 /* Only call LOGO ACC for first LOGO, this avoids sending unnecessary
653 * PLOGIs during LOGO storms from a device.
654 */
655 spin_lock_irq(shost->host_lock);
656 ndlp->nlp_flag |= NLP_LOGO_ACC;
657 spin_unlock_irq(shost->host_lock);
658 if (els_cmd == ELS_CMD_PRLO)
659 lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
660 else
661 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
662 if (ndlp->nlp_DID == Fabric_DID) {
663 if (vport->port_state <= LPFC_FDISC)
664 goto out;
665 lpfc_linkdown_port(vport);
666 spin_lock_irq(shost->host_lock);
667 vport->fc_flag |= FC_VPORT_LOGO_RCVD;
668 spin_unlock_irq(shost->host_lock);
669 vports = lpfc_create_vport_work_array(phba);
670 if (vports) {
671 for (i = 0; i <= phba->max_vports && vports[i] != NULL;
672 i++) {
673 if ((!(vports[i]->fc_flag &
674 FC_VPORT_LOGO_RCVD)) &&
675 (vports[i]->port_state > LPFC_FDISC)) {
676 active_vlink_present = 1;
677 break;
678 }
679 }
680 lpfc_destroy_vport_work_array(phba, vports);
681 }
682
683 /*
684 * Don't re-instantiate if vport is marked for deletion.
685 * If we are here first then vport_delete is going to wait
686 * for discovery to complete.
687 */
688 if (!(vport->load_flag & FC_UNLOADING) &&
689 active_vlink_present) {
690 /*
691 * If there are other active VLinks present,
692 * re-instantiate the Vlink using FDISC.
693 */
694 mod_timer(&ndlp->nlp_delayfunc,
695 jiffies + msecs_to_jiffies(1000));
696 spin_lock_irq(shost->host_lock);
697 ndlp->nlp_flag |= NLP_DELAY_TMO;
698 spin_unlock_irq(shost->host_lock);
699 ndlp->nlp_last_elscmd = ELS_CMD_FDISC;
700 vport->port_state = LPFC_FDISC;
701 } else {
702 spin_lock_irq(shost->host_lock);
703 phba->pport->fc_flag &= ~FC_LOGO_RCVD_DID_CHNG;
704 spin_unlock_irq(shost->host_lock);
705 lpfc_retry_pport_discovery(phba);
706 }
707 } else if ((!(ndlp->nlp_type & NLP_FABRIC) &&
708 ((ndlp->nlp_type & NLP_FCP_TARGET) ||
709 !(ndlp->nlp_type & NLP_FCP_INITIATOR))) ||
710 (ndlp->nlp_state == NLP_STE_ADISC_ISSUE)) {
711 /* Only try to re-login if this is NOT a Fabric Node */
712 mod_timer(&ndlp->nlp_delayfunc,
713 jiffies + msecs_to_jiffies(1000 * 1));
714 spin_lock_irq(shost->host_lock);
715 ndlp->nlp_flag |= NLP_DELAY_TMO;
716 spin_unlock_irq(shost->host_lock);
717
718 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
719 }
720 out:
721 ndlp->nlp_prev_state = ndlp->nlp_state;
722 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
723
724 spin_lock_irq(shost->host_lock);
725 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
726 spin_unlock_irq(shost->host_lock);
727 /* The driver has to wait until the ACC completes before it continues
728 * processing the LOGO. The action will resume in
729 * lpfc_cmpl_els_logo_acc routine. Since part of processing includes an
730 * unreg_login, the driver waits so the ACC does not get aborted.
731 */
732 return 0;
733 }
734
735 static uint32_t
736 lpfc_rcv_prli_support_check(struct lpfc_vport *vport,
737 struct lpfc_nodelist *ndlp,
738 struct lpfc_iocbq *cmdiocb)
739 {
740 struct ls_rjt stat;
741 uint32_t *payload;
742 uint32_t cmd;
743
744 payload = ((struct lpfc_dmabuf *)cmdiocb->context2)->virt;
745 cmd = *payload;
746 if (vport->phba->nvmet_support) {
747 /* Must be a NVME PRLI */
748 if (cmd == ELS_CMD_PRLI)
749 goto out;
750 } else {
751 /* Initiator mode. */
752 if (!vport->nvmei_support && (cmd == ELS_CMD_NVMEPRLI))
753 goto out;
754 }
755 return 1;
756 out:
757 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NVME_DISC,
758 "6115 Rcv PRLI (%x) check failed: ndlp rpi %d "
759 "state x%x flags x%x\n",
760 cmd, ndlp->nlp_rpi, ndlp->nlp_state,
761 ndlp->nlp_flag);
762 memset(&stat, 0, sizeof(struct ls_rjt));
763 stat.un.b.lsRjtRsnCode = LSRJT_CMD_UNSUPPORTED;
764 stat.un.b.lsRjtRsnCodeExp = LSEXP_REQ_UNSUPPORTED;
765 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb,
766 ndlp, NULL);
767 return 0;
768 }
769
770 static void
771 lpfc_rcv_prli(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
772 struct lpfc_iocbq *cmdiocb)
773 {
774 struct lpfc_hba *phba = vport->phba;
775 struct lpfc_dmabuf *pcmd;
776 uint32_t *lp;
777 PRLI *npr;
778 struct fc_rport *rport = ndlp->rport;
779 u32 roles;
780
781 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
782 lp = (uint32_t *) pcmd->virt;
783 npr = (PRLI *) ((uint8_t *) lp + sizeof (uint32_t));
784
785 if ((npr->prliType == PRLI_FCP_TYPE) ||
786 (npr->prliType == PRLI_NVME_TYPE)) {
787 if (npr->initiatorFunc) {
788 if (npr->prliType == PRLI_FCP_TYPE)
789 ndlp->nlp_type |= NLP_FCP_INITIATOR;
790 if (npr->prliType == PRLI_NVME_TYPE)
791 ndlp->nlp_type |= NLP_NVME_INITIATOR;
792 }
793 if (npr->targetFunc) {
794 if (npr->prliType == PRLI_FCP_TYPE)
795 ndlp->nlp_type |= NLP_FCP_TARGET;
796 if (npr->prliType == PRLI_NVME_TYPE)
797 ndlp->nlp_type |= NLP_NVME_TARGET;
798 if (npr->writeXferRdyDis)
799 ndlp->nlp_flag |= NLP_FIRSTBURST;
800 }
801 if (npr->Retry)
802 ndlp->nlp_fcp_info |= NLP_FCP_2_DEVICE;
803
804 /* If this driver is in nvme target mode, set the ndlp's fc4
805 * type to NVME provided the PRLI response claims NVME FC4
806 * type. Target mode does not issue gft_id so doesn't get
807 * the fc4 type set until now.
808 */
809 if (phba->nvmet_support && (npr->prliType == PRLI_NVME_TYPE)) {
810 ndlp->nlp_fc4_type |= NLP_FC4_NVME;
811 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
812 }
813 if (npr->prliType == PRLI_FCP_TYPE)
814 ndlp->nlp_fc4_type |= NLP_FC4_FCP;
815 }
816 if (rport) {
817 /* We need to update the rport role values */
818 roles = FC_RPORT_ROLE_UNKNOWN;
819 if (ndlp->nlp_type & NLP_FCP_INITIATOR)
820 roles |= FC_RPORT_ROLE_FCP_INITIATOR;
821 if (ndlp->nlp_type & NLP_FCP_TARGET)
822 roles |= FC_RPORT_ROLE_FCP_TARGET;
823
824 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
825 "rport rolechg: role:x%x did:x%x flg:x%x",
826 roles, ndlp->nlp_DID, ndlp->nlp_flag);
827
828 if (phba->cfg_enable_fc4_type != LPFC_ENABLE_NVME)
829 fc_remote_port_rolechg(rport, roles);
830 }
831 }
832
833 static uint32_t
834 lpfc_disc_set_adisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
835 {
836 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
837
838 if (!(ndlp->nlp_flag & NLP_RPI_REGISTERED)) {
839 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
840 return 0;
841 }
842
843 if (!(vport->fc_flag & FC_PT2PT)) {
844 /* Check config parameter use-adisc or FCP-2 */
845 if ((vport->cfg_use_adisc && (vport->fc_flag & FC_RSCN_MODE)) ||
846 ((ndlp->nlp_fcp_info & NLP_FCP_2_DEVICE) &&
847 (ndlp->nlp_type & NLP_FCP_TARGET))) {
848 spin_lock_irq(shost->host_lock);
849 ndlp->nlp_flag |= NLP_NPR_ADISC;
850 spin_unlock_irq(shost->host_lock);
851 return 1;
852 }
853 }
854 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
855 lpfc_unreg_rpi(vport, ndlp);
856 return 0;
857 }
858
859 /**
860 * lpfc_release_rpi - Release a RPI by issuing unreg_login mailbox cmd.
861 * @phba : Pointer to lpfc_hba structure.
862 * @vport: Pointer to lpfc_vport structure.
863 * @rpi : rpi to be release.
864 *
865 * This function will send a unreg_login mailbox command to the firmware
866 * to release a rpi.
867 **/
868 void
869 lpfc_release_rpi(struct lpfc_hba *phba,
870 struct lpfc_vport *vport,
871 uint16_t rpi)
872 {
873 LPFC_MBOXQ_t *pmb;
874 int rc;
875
876 pmb = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool,
877 GFP_KERNEL);
878 if (!pmb)
879 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
880 "2796 mailbox memory allocation failed \n");
881 else {
882 lpfc_unreg_login(phba, vport->vpi, rpi, pmb);
883 pmb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
884 rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);
885 if (rc == MBX_NOT_FINISHED)
886 mempool_free(pmb, phba->mbox_mem_pool);
887 }
888 }
889
890 static uint32_t
891 lpfc_disc_illegal(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
892 void *arg, uint32_t evt)
893 {
894 struct lpfc_hba *phba;
895 LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg;
896 uint16_t rpi;
897
898 phba = vport->phba;
899 /* Release the RPI if reglogin completing */
900 if (!(phba->pport->load_flag & FC_UNLOADING) &&
901 (evt == NLP_EVT_CMPL_REG_LOGIN) &&
902 (!pmb->u.mb.mbxStatus)) {
903 rpi = pmb->u.mb.un.varWords[0];
904 lpfc_release_rpi(phba, vport, rpi);
905 }
906 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
907 "0271 Illegal State Transition: node x%x "
908 "event x%x, state x%x Data: x%x x%x\n",
909 ndlp->nlp_DID, evt, ndlp->nlp_state, ndlp->nlp_rpi,
910 ndlp->nlp_flag);
911 return ndlp->nlp_state;
912 }
913
914 static uint32_t
915 lpfc_cmpl_plogi_illegal(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
916 void *arg, uint32_t evt)
917 {
918 /* This transition is only legal if we previously
919 * rcv'ed a PLOGI. Since we don't want 2 discovery threads
920 * working on the same NPortID, do nothing for this thread
921 * to stop it.
922 */
923 if (!(ndlp->nlp_flag & NLP_RCV_PLOGI)) {
924 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
925 "0272 Illegal State Transition: node x%x "
926 "event x%x, state x%x Data: x%x x%x\n",
927 ndlp->nlp_DID, evt, ndlp->nlp_state, ndlp->nlp_rpi,
928 ndlp->nlp_flag);
929 }
930 return ndlp->nlp_state;
931 }
932
933 /* Start of Discovery State Machine routines */
934
935 static uint32_t
936 lpfc_rcv_plogi_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
937 void *arg, uint32_t evt)
938 {
939 struct lpfc_iocbq *cmdiocb;
940
941 cmdiocb = (struct lpfc_iocbq *) arg;
942
943 if (lpfc_rcv_plogi(vport, ndlp, cmdiocb)) {
944 return ndlp->nlp_state;
945 }
946 return NLP_STE_FREED_NODE;
947 }
948
949 static uint32_t
950 lpfc_rcv_els_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
951 void *arg, uint32_t evt)
952 {
953 lpfc_issue_els_logo(vport, ndlp, 0);
954 return ndlp->nlp_state;
955 }
956
957 static uint32_t
958 lpfc_rcv_logo_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
959 void *arg, uint32_t evt)
960 {
961 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
962 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
963
964 spin_lock_irq(shost->host_lock);
965 ndlp->nlp_flag |= NLP_LOGO_ACC;
966 spin_unlock_irq(shost->host_lock);
967 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
968
969 return ndlp->nlp_state;
970 }
971
972 static uint32_t
973 lpfc_cmpl_logo_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
974 void *arg, uint32_t evt)
975 {
976 return NLP_STE_FREED_NODE;
977 }
978
979 static uint32_t
980 lpfc_device_rm_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
981 void *arg, uint32_t evt)
982 {
983 return NLP_STE_FREED_NODE;
984 }
985
986 static uint32_t
987 lpfc_device_recov_unused_node(struct lpfc_vport *vport,
988 struct lpfc_nodelist *ndlp,
989 void *arg, uint32_t evt)
990 {
991 return ndlp->nlp_state;
992 }
993
994 static uint32_t
995 lpfc_rcv_plogi_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
996 void *arg, uint32_t evt)
997 {
998 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
999 struct lpfc_hba *phba = vport->phba;
1000 struct lpfc_iocbq *cmdiocb = arg;
1001 struct lpfc_dmabuf *pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
1002 uint32_t *lp = (uint32_t *) pcmd->virt;
1003 struct serv_parm *sp = (struct serv_parm *) (lp + 1);
1004 struct ls_rjt stat;
1005 int port_cmp;
1006
1007 memset(&stat, 0, sizeof (struct ls_rjt));
1008
1009 /* For a PLOGI, we only accept if our portname is less
1010 * than the remote portname.
1011 */
1012 phba->fc_stat.elsLogiCol++;
1013 port_cmp = memcmp(&vport->fc_portname, &sp->portName,
1014 sizeof(struct lpfc_name));
1015
1016 if (port_cmp >= 0) {
1017 /* Reject this request because the remote node will accept
1018 ours */
1019 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
1020 stat.un.b.lsRjtRsnCodeExp = LSEXP_CMD_IN_PROGRESS;
1021 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
1022 NULL);
1023 } else {
1024 if (lpfc_rcv_plogi(vport, ndlp, cmdiocb) &&
1025 (ndlp->nlp_flag & NLP_NPR_2B_DISC) &&
1026 (vport->num_disc_nodes)) {
1027 spin_lock_irq(shost->host_lock);
1028 ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
1029 spin_unlock_irq(shost->host_lock);
1030 /* Check if there are more PLOGIs to be sent */
1031 lpfc_more_plogi(vport);
1032 if (vport->num_disc_nodes == 0) {
1033 spin_lock_irq(shost->host_lock);
1034 vport->fc_flag &= ~FC_NDISC_ACTIVE;
1035 spin_unlock_irq(shost->host_lock);
1036 lpfc_can_disctmo(vport);
1037 lpfc_end_rscn(vport);
1038 }
1039 }
1040 } /* If our portname was less */
1041
1042 return ndlp->nlp_state;
1043 }
1044
1045 static uint32_t
1046 lpfc_rcv_prli_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1047 void *arg, uint32_t evt)
1048 {
1049 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1050 struct ls_rjt stat;
1051
1052 memset(&stat, 0, sizeof (struct ls_rjt));
1053 stat.un.b.lsRjtRsnCode = LSRJT_LOGICAL_BSY;
1054 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
1055 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
1056 return ndlp->nlp_state;
1057 }
1058
1059 static uint32_t
1060 lpfc_rcv_logo_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1061 void *arg, uint32_t evt)
1062 {
1063 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1064
1065 /* software abort outstanding PLOGI */
1066 lpfc_els_abort(vport->phba, ndlp);
1067
1068 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1069 return ndlp->nlp_state;
1070 }
1071
1072 static uint32_t
1073 lpfc_rcv_els_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1074 void *arg, uint32_t evt)
1075 {
1076 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1077 struct lpfc_hba *phba = vport->phba;
1078 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1079
1080 /* software abort outstanding PLOGI */
1081 lpfc_els_abort(phba, ndlp);
1082
1083 if (evt == NLP_EVT_RCV_LOGO) {
1084 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
1085 } else {
1086 lpfc_issue_els_logo(vport, ndlp, 0);
1087 }
1088
1089 /* Put ndlp in npr state set plogi timer for 1 sec */
1090 mod_timer(&ndlp->nlp_delayfunc, jiffies + msecs_to_jiffies(1000 * 1));
1091 spin_lock_irq(shost->host_lock);
1092 ndlp->nlp_flag |= NLP_DELAY_TMO;
1093 spin_unlock_irq(shost->host_lock);
1094 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
1095 ndlp->nlp_prev_state = NLP_STE_PLOGI_ISSUE;
1096 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1097
1098 return ndlp->nlp_state;
1099 }
1100
1101 static uint32_t
1102 lpfc_cmpl_plogi_plogi_issue(struct lpfc_vport *vport,
1103 struct lpfc_nodelist *ndlp,
1104 void *arg,
1105 uint32_t evt)
1106 {
1107 struct lpfc_hba *phba = vport->phba;
1108 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1109 struct lpfc_iocbq *cmdiocb, *rspiocb;
1110 struct lpfc_dmabuf *pcmd, *prsp, *mp;
1111 uint32_t *lp;
1112 uint32_t vid, flag;
1113 IOCB_t *irsp;
1114 struct serv_parm *sp;
1115 uint32_t ed_tov;
1116 LPFC_MBOXQ_t *mbox;
1117 int rc;
1118
1119 cmdiocb = (struct lpfc_iocbq *) arg;
1120 rspiocb = cmdiocb->context_un.rsp_iocb;
1121
1122 if (ndlp->nlp_flag & NLP_ACC_REGLOGIN) {
1123 /* Recovery from PLOGI collision logic */
1124 return ndlp->nlp_state;
1125 }
1126
1127 irsp = &rspiocb->iocb;
1128
1129 if (irsp->ulpStatus)
1130 goto out;
1131
1132 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
1133
1134 prsp = list_get_first(&pcmd->list, struct lpfc_dmabuf, list);
1135 if (!prsp)
1136 goto out;
1137
1138 lp = (uint32_t *) prsp->virt;
1139 sp = (struct serv_parm *) ((uint8_t *) lp + sizeof (uint32_t));
1140
1141 /* Some switches have FDMI servers returning 0 for WWN */
1142 if ((ndlp->nlp_DID != FDMI_DID) &&
1143 (wwn_to_u64(sp->portName.u.wwn) == 0 ||
1144 wwn_to_u64(sp->nodeName.u.wwn) == 0)) {
1145 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
1146 "0142 PLOGI RSP: Invalid WWN.\n");
1147 goto out;
1148 }
1149 if (!lpfc_check_sparm(vport, ndlp, sp, CLASS3, 0))
1150 goto out;
1151 /* PLOGI chkparm OK */
1152 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
1153 "0121 PLOGI chkparm OK Data: x%x x%x x%x x%x\n",
1154 ndlp->nlp_DID, ndlp->nlp_state,
1155 ndlp->nlp_flag, ndlp->nlp_rpi);
1156 if (vport->cfg_fcp_class == 2 && (sp->cls2.classValid))
1157 ndlp->nlp_fcp_info |= CLASS2;
1158 else
1159 ndlp->nlp_fcp_info |= CLASS3;
1160
1161 ndlp->nlp_class_sup = 0;
1162 if (sp->cls1.classValid)
1163 ndlp->nlp_class_sup |= FC_COS_CLASS1;
1164 if (sp->cls2.classValid)
1165 ndlp->nlp_class_sup |= FC_COS_CLASS2;
1166 if (sp->cls3.classValid)
1167 ndlp->nlp_class_sup |= FC_COS_CLASS3;
1168 if (sp->cls4.classValid)
1169 ndlp->nlp_class_sup |= FC_COS_CLASS4;
1170 ndlp->nlp_maxframe =
1171 ((sp->cmn.bbRcvSizeMsb & 0x0F) << 8) | sp->cmn.bbRcvSizeLsb;
1172
1173 if ((vport->fc_flag & FC_PT2PT) &&
1174 (vport->fc_flag & FC_PT2PT_PLOGI)) {
1175 ed_tov = be32_to_cpu(sp->cmn.e_d_tov);
1176 if (sp->cmn.edtovResolution) {
1177 /* E_D_TOV ticks are in nanoseconds */
1178 ed_tov = (phba->fc_edtov + 999999) / 1000000;
1179 }
1180
1181 ndlp->nlp_flag &= ~NLP_SUPPRESS_RSP;
1182 if ((phba->sli.sli_flag & LPFC_SLI_SUPPRESS_RSP) &&
1183 sp->cmn.valid_vendor_ver_level) {
1184 vid = be32_to_cpu(sp->un.vv.vid);
1185 flag = be32_to_cpu(sp->un.vv.flags);
1186 if ((vid == LPFC_VV_EMLX_ID) &&
1187 (flag & LPFC_VV_SUPPRESS_RSP))
1188 ndlp->nlp_flag |= NLP_SUPPRESS_RSP;
1189 }
1190
1191 /*
1192 * Use the larger EDTOV
1193 * RATOV = 2 * EDTOV for pt-to-pt
1194 */
1195 if (ed_tov > phba->fc_edtov)
1196 phba->fc_edtov = ed_tov;
1197 phba->fc_ratov = (2 * phba->fc_edtov) / 1000;
1198
1199 memcpy(&phba->fc_fabparam, sp, sizeof(struct serv_parm));
1200
1201 /* Issue config_link / reg_vfi to account for updated TOV's */
1202 if (phba->sli_rev == LPFC_SLI_REV4) {
1203 lpfc_issue_reg_vfi(vport);
1204 } else {
1205 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1206 if (!mbox) {
1207 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
1208 "0133 PLOGI: no memory "
1209 "for config_link "
1210 "Data: x%x x%x x%x x%x\n",
1211 ndlp->nlp_DID, ndlp->nlp_state,
1212 ndlp->nlp_flag, ndlp->nlp_rpi);
1213 goto out;
1214 }
1215
1216 lpfc_config_link(phba, mbox);
1217
1218 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
1219 mbox->vport = vport;
1220 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
1221 if (rc == MBX_NOT_FINISHED) {
1222 mempool_free(mbox, phba->mbox_mem_pool);
1223 goto out;
1224 }
1225 }
1226 }
1227
1228 lpfc_unreg_rpi(vport, ndlp);
1229
1230 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1231 if (!mbox) {
1232 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
1233 "0018 PLOGI: no memory for reg_login "
1234 "Data: x%x x%x x%x x%x\n",
1235 ndlp->nlp_DID, ndlp->nlp_state,
1236 ndlp->nlp_flag, ndlp->nlp_rpi);
1237 goto out;
1238 }
1239
1240 if (lpfc_reg_rpi(phba, vport->vpi, irsp->un.elsreq64.remoteID,
1241 (uint8_t *) sp, mbox, ndlp->nlp_rpi) == 0) {
1242 switch (ndlp->nlp_DID) {
1243 case NameServer_DID:
1244 mbox->mbox_cmpl = lpfc_mbx_cmpl_ns_reg_login;
1245 break;
1246 case FDMI_DID:
1247 mbox->mbox_cmpl = lpfc_mbx_cmpl_fdmi_reg_login;
1248 break;
1249 default:
1250 ndlp->nlp_flag |= NLP_REG_LOGIN_SEND;
1251 mbox->mbox_cmpl = lpfc_mbx_cmpl_reg_login;
1252 }
1253 mbox->context2 = lpfc_nlp_get(ndlp);
1254 mbox->vport = vport;
1255 if (lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT)
1256 != MBX_NOT_FINISHED) {
1257 lpfc_nlp_set_state(vport, ndlp,
1258 NLP_STE_REG_LOGIN_ISSUE);
1259 return ndlp->nlp_state;
1260 }
1261 if (ndlp->nlp_flag & NLP_REG_LOGIN_SEND)
1262 ndlp->nlp_flag &= ~NLP_REG_LOGIN_SEND;
1263 /* decrement node reference count to the failed mbox
1264 * command
1265 */
1266 lpfc_nlp_put(ndlp);
1267 mp = (struct lpfc_dmabuf *) mbox->context1;
1268 lpfc_mbuf_free(phba, mp->virt, mp->phys);
1269 kfree(mp);
1270 mempool_free(mbox, phba->mbox_mem_pool);
1271
1272 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
1273 "0134 PLOGI: cannot issue reg_login "
1274 "Data: x%x x%x x%x x%x\n",
1275 ndlp->nlp_DID, ndlp->nlp_state,
1276 ndlp->nlp_flag, ndlp->nlp_rpi);
1277 } else {
1278 mempool_free(mbox, phba->mbox_mem_pool);
1279
1280 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
1281 "0135 PLOGI: cannot format reg_login "
1282 "Data: x%x x%x x%x x%x\n",
1283 ndlp->nlp_DID, ndlp->nlp_state,
1284 ndlp->nlp_flag, ndlp->nlp_rpi);
1285 }
1286
1287
1288 out:
1289 if (ndlp->nlp_DID == NameServer_DID) {
1290 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
1291 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
1292 "0261 Cannot Register NameServer login\n");
1293 }
1294
1295 /*
1296 ** In case the node reference counter does not go to zero, ensure that
1297 ** the stale state for the node is not processed.
1298 */
1299
1300 ndlp->nlp_prev_state = ndlp->nlp_state;
1301 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1302 spin_lock_irq(shost->host_lock);
1303 ndlp->nlp_flag |= NLP_DEFER_RM;
1304 spin_unlock_irq(shost->host_lock);
1305 return NLP_STE_FREED_NODE;
1306 }
1307
1308 static uint32_t
1309 lpfc_cmpl_logo_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1310 void *arg, uint32_t evt)
1311 {
1312 return ndlp->nlp_state;
1313 }
1314
1315 static uint32_t
1316 lpfc_cmpl_reglogin_plogi_issue(struct lpfc_vport *vport,
1317 struct lpfc_nodelist *ndlp, void *arg, uint32_t evt)
1318 {
1319 struct lpfc_hba *phba;
1320 LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg;
1321 MAILBOX_t *mb = &pmb->u.mb;
1322 uint16_t rpi;
1323
1324 phba = vport->phba;
1325 /* Release the RPI */
1326 if (!(phba->pport->load_flag & FC_UNLOADING) &&
1327 !mb->mbxStatus) {
1328 rpi = pmb->u.mb.un.varWords[0];
1329 lpfc_release_rpi(phba, vport, rpi);
1330 }
1331 return ndlp->nlp_state;
1332 }
1333
1334 static uint32_t
1335 lpfc_device_rm_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1336 void *arg, uint32_t evt)
1337 {
1338 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1339
1340 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1341 spin_lock_irq(shost->host_lock);
1342 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1343 spin_unlock_irq(shost->host_lock);
1344 return ndlp->nlp_state;
1345 } else {
1346 /* software abort outstanding PLOGI */
1347 lpfc_els_abort(vport->phba, ndlp);
1348
1349 lpfc_drop_node(vport, ndlp);
1350 return NLP_STE_FREED_NODE;
1351 }
1352 }
1353
1354 static uint32_t
1355 lpfc_device_recov_plogi_issue(struct lpfc_vport *vport,
1356 struct lpfc_nodelist *ndlp,
1357 void *arg,
1358 uint32_t evt)
1359 {
1360 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1361 struct lpfc_hba *phba = vport->phba;
1362
1363 /* Don't do anything that will mess up processing of the
1364 * previous RSCN.
1365 */
1366 if (vport->fc_flag & FC_RSCN_DEFERRED)
1367 return ndlp->nlp_state;
1368
1369 /* software abort outstanding PLOGI */
1370 lpfc_els_abort(phba, ndlp);
1371
1372 ndlp->nlp_prev_state = NLP_STE_PLOGI_ISSUE;
1373 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1374 spin_lock_irq(shost->host_lock);
1375 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1376 spin_unlock_irq(shost->host_lock);
1377
1378 return ndlp->nlp_state;
1379 }
1380
1381 static uint32_t
1382 lpfc_rcv_plogi_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1383 void *arg, uint32_t evt)
1384 {
1385 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1386 struct lpfc_hba *phba = vport->phba;
1387 struct lpfc_iocbq *cmdiocb;
1388
1389 /* software abort outstanding ADISC */
1390 lpfc_els_abort(phba, ndlp);
1391
1392 cmdiocb = (struct lpfc_iocbq *) arg;
1393
1394 if (lpfc_rcv_plogi(vport, ndlp, cmdiocb)) {
1395 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1396 spin_lock_irq(shost->host_lock);
1397 ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
1398 spin_unlock_irq(shost->host_lock);
1399 if (vport->num_disc_nodes)
1400 lpfc_more_adisc(vport);
1401 }
1402 return ndlp->nlp_state;
1403 }
1404 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1405 lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
1406 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
1407
1408 return ndlp->nlp_state;
1409 }
1410
1411 static uint32_t
1412 lpfc_rcv_prli_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1413 void *arg, uint32_t evt)
1414 {
1415 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1416
1417 if (lpfc_rcv_prli_support_check(vport, ndlp, cmdiocb))
1418 lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1419 return ndlp->nlp_state;
1420 }
1421
1422 static uint32_t
1423 lpfc_rcv_logo_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1424 void *arg, uint32_t evt)
1425 {
1426 struct lpfc_hba *phba = vport->phba;
1427 struct lpfc_iocbq *cmdiocb;
1428
1429 cmdiocb = (struct lpfc_iocbq *) arg;
1430
1431 /* software abort outstanding ADISC */
1432 lpfc_els_abort(phba, ndlp);
1433
1434 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1435 return ndlp->nlp_state;
1436 }
1437
1438 static uint32_t
1439 lpfc_rcv_padisc_adisc_issue(struct lpfc_vport *vport,
1440 struct lpfc_nodelist *ndlp,
1441 void *arg, uint32_t evt)
1442 {
1443 struct lpfc_iocbq *cmdiocb;
1444
1445 cmdiocb = (struct lpfc_iocbq *) arg;
1446
1447 lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1448 return ndlp->nlp_state;
1449 }
1450
1451 static uint32_t
1452 lpfc_rcv_prlo_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1453 void *arg, uint32_t evt)
1454 {
1455 struct lpfc_iocbq *cmdiocb;
1456
1457 cmdiocb = (struct lpfc_iocbq *) arg;
1458
1459 /* Treat like rcv logo */
1460 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_PRLO);
1461 return ndlp->nlp_state;
1462 }
1463
1464 static uint32_t
1465 lpfc_cmpl_adisc_adisc_issue(struct lpfc_vport *vport,
1466 struct lpfc_nodelist *ndlp,
1467 void *arg, uint32_t evt)
1468 {
1469 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1470 struct lpfc_hba *phba = vport->phba;
1471 struct lpfc_iocbq *cmdiocb, *rspiocb;
1472 IOCB_t *irsp;
1473 ADISC *ap;
1474 int rc;
1475
1476 cmdiocb = (struct lpfc_iocbq *) arg;
1477 rspiocb = cmdiocb->context_un.rsp_iocb;
1478
1479 ap = (ADISC *)lpfc_check_elscmpl_iocb(phba, cmdiocb, rspiocb);
1480 irsp = &rspiocb->iocb;
1481
1482 if ((irsp->ulpStatus) ||
1483 (!lpfc_check_adisc(vport, ndlp, &ap->nodeName, &ap->portName))) {
1484 /* 1 sec timeout */
1485 mod_timer(&ndlp->nlp_delayfunc,
1486 jiffies + msecs_to_jiffies(1000));
1487 spin_lock_irq(shost->host_lock);
1488 ndlp->nlp_flag |= NLP_DELAY_TMO;
1489 spin_unlock_irq(shost->host_lock);
1490 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
1491
1492 memset(&ndlp->nlp_nodename, 0, sizeof(struct lpfc_name));
1493 memset(&ndlp->nlp_portname, 0, sizeof(struct lpfc_name));
1494
1495 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1496 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1497 lpfc_unreg_rpi(vport, ndlp);
1498 return ndlp->nlp_state;
1499 }
1500
1501 if (phba->sli_rev == LPFC_SLI_REV4) {
1502 rc = lpfc_sli4_resume_rpi(ndlp, NULL, NULL);
1503 if (rc) {
1504 /* Stay in state and retry. */
1505 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1506 return ndlp->nlp_state;
1507 }
1508 }
1509
1510 if (ndlp->nlp_type & NLP_FCP_TARGET) {
1511 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1512 lpfc_nlp_set_state(vport, ndlp, NLP_STE_MAPPED_NODE);
1513 } else {
1514 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1515 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1516 }
1517
1518 return ndlp->nlp_state;
1519 }
1520
1521 static uint32_t
1522 lpfc_device_rm_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1523 void *arg, uint32_t evt)
1524 {
1525 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1526
1527 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1528 spin_lock_irq(shost->host_lock);
1529 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1530 spin_unlock_irq(shost->host_lock);
1531 return ndlp->nlp_state;
1532 } else {
1533 /* software abort outstanding ADISC */
1534 lpfc_els_abort(vport->phba, ndlp);
1535
1536 lpfc_drop_node(vport, ndlp);
1537 return NLP_STE_FREED_NODE;
1538 }
1539 }
1540
1541 static uint32_t
1542 lpfc_device_recov_adisc_issue(struct lpfc_vport *vport,
1543 struct lpfc_nodelist *ndlp,
1544 void *arg,
1545 uint32_t evt)
1546 {
1547 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1548 struct lpfc_hba *phba = vport->phba;
1549
1550 /* Don't do anything that will mess up processing of the
1551 * previous RSCN.
1552 */
1553 if (vport->fc_flag & FC_RSCN_DEFERRED)
1554 return ndlp->nlp_state;
1555
1556 /* software abort outstanding ADISC */
1557 lpfc_els_abort(phba, ndlp);
1558
1559 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1560 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1561 spin_lock_irq(shost->host_lock);
1562 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1563 spin_unlock_irq(shost->host_lock);
1564 lpfc_disc_set_adisc(vport, ndlp);
1565 return ndlp->nlp_state;
1566 }
1567
1568 static uint32_t
1569 lpfc_rcv_plogi_reglogin_issue(struct lpfc_vport *vport,
1570 struct lpfc_nodelist *ndlp,
1571 void *arg,
1572 uint32_t evt)
1573 {
1574 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1575
1576 lpfc_rcv_plogi(vport, ndlp, cmdiocb);
1577 return ndlp->nlp_state;
1578 }
1579
1580 static uint32_t
1581 lpfc_rcv_prli_reglogin_issue(struct lpfc_vport *vport,
1582 struct lpfc_nodelist *ndlp,
1583 void *arg,
1584 uint32_t evt)
1585 {
1586 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1587 struct ls_rjt stat;
1588
1589 if (!lpfc_rcv_prli_support_check(vport, ndlp, cmdiocb)) {
1590 return ndlp->nlp_state;
1591 }
1592 if (vport->phba->nvmet_support) {
1593 /* NVME Target mode. Handle and respond to the PRLI and
1594 * transition to UNMAPPED provided the RPI has completed
1595 * registration.
1596 */
1597 if (ndlp->nlp_flag & NLP_RPI_REGISTERED) {
1598 lpfc_rcv_prli(vport, ndlp, cmdiocb);
1599 lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1600 } else {
1601 /* RPI registration has not completed. Reject the PRLI
1602 * to prevent an illegal state transition when the
1603 * rpi registration does complete.
1604 */
1605 memset(&stat, 0, sizeof(struct ls_rjt));
1606 stat.un.b.lsRjtRsnCode = LSRJT_LOGICAL_BSY;
1607 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
1608 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb,
1609 ndlp, NULL);
1610 return ndlp->nlp_state;
1611 }
1612 } else {
1613 /* Initiator mode. */
1614 lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1615 }
1616 return ndlp->nlp_state;
1617 }
1618
1619 static uint32_t
1620 lpfc_rcv_logo_reglogin_issue(struct lpfc_vport *vport,
1621 struct lpfc_nodelist *ndlp,
1622 void *arg,
1623 uint32_t evt)
1624 {
1625 struct lpfc_hba *phba = vport->phba;
1626 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1627 LPFC_MBOXQ_t *mb;
1628 LPFC_MBOXQ_t *nextmb;
1629 struct lpfc_dmabuf *mp;
1630
1631 cmdiocb = (struct lpfc_iocbq *) arg;
1632
1633 /* cleanup any ndlp on mbox q waiting for reglogin cmpl */
1634 if ((mb = phba->sli.mbox_active)) {
1635 if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) &&
1636 (ndlp == (struct lpfc_nodelist *) mb->context2)) {
1637 ndlp->nlp_flag &= ~NLP_REG_LOGIN_SEND;
1638 lpfc_nlp_put(ndlp);
1639 mb->context2 = NULL;
1640 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
1641 }
1642 }
1643
1644 spin_lock_irq(&phba->hbalock);
1645 list_for_each_entry_safe(mb, nextmb, &phba->sli.mboxq, list) {
1646 if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) &&
1647 (ndlp == (struct lpfc_nodelist *) mb->context2)) {
1648 mp = (struct lpfc_dmabuf *) (mb->context1);
1649 if (mp) {
1650 __lpfc_mbuf_free(phba, mp->virt, mp->phys);
1651 kfree(mp);
1652 }
1653 ndlp->nlp_flag &= ~NLP_REG_LOGIN_SEND;
1654 lpfc_nlp_put(ndlp);
1655 list_del(&mb->list);
1656 phba->sli.mboxq_cnt--;
1657 mempool_free(mb, phba->mbox_mem_pool);
1658 }
1659 }
1660 spin_unlock_irq(&phba->hbalock);
1661
1662 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1663 return ndlp->nlp_state;
1664 }
1665
1666 static uint32_t
1667 lpfc_rcv_padisc_reglogin_issue(struct lpfc_vport *vport,
1668 struct lpfc_nodelist *ndlp,
1669 void *arg,
1670 uint32_t evt)
1671 {
1672 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1673
1674 lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1675 return ndlp->nlp_state;
1676 }
1677
1678 static uint32_t
1679 lpfc_rcv_prlo_reglogin_issue(struct lpfc_vport *vport,
1680 struct lpfc_nodelist *ndlp,
1681 void *arg,
1682 uint32_t evt)
1683 {
1684 struct lpfc_iocbq *cmdiocb;
1685
1686 cmdiocb = (struct lpfc_iocbq *) arg;
1687 lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
1688 return ndlp->nlp_state;
1689 }
1690
1691 static uint32_t
1692 lpfc_cmpl_reglogin_reglogin_issue(struct lpfc_vport *vport,
1693 struct lpfc_nodelist *ndlp,
1694 void *arg,
1695 uint32_t evt)
1696 {
1697 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1698 struct lpfc_hba *phba = vport->phba;
1699 LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg;
1700 MAILBOX_t *mb = &pmb->u.mb;
1701 uint32_t did = mb->un.varWords[1];
1702 int rc = 0;
1703
1704 if (mb->mbxStatus) {
1705 /* RegLogin failed */
1706 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
1707 "0246 RegLogin failed Data: x%x x%x x%x x%x "
1708 "x%x\n",
1709 did, mb->mbxStatus, vport->port_state,
1710 mb->un.varRegLogin.vpi,
1711 mb->un.varRegLogin.rpi);
1712 /*
1713 * If RegLogin failed due to lack of HBA resources do not
1714 * retry discovery.
1715 */
1716 if (mb->mbxStatus == MBXERR_RPI_FULL) {
1717 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1718 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1719 return ndlp->nlp_state;
1720 }
1721
1722 /* Put ndlp in npr state set plogi timer for 1 sec */
1723 mod_timer(&ndlp->nlp_delayfunc,
1724 jiffies + msecs_to_jiffies(1000 * 1));
1725 spin_lock_irq(shost->host_lock);
1726 ndlp->nlp_flag |= NLP_DELAY_TMO;
1727 spin_unlock_irq(shost->host_lock);
1728 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
1729
1730 lpfc_issue_els_logo(vport, ndlp, 0);
1731 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1732 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1733 return ndlp->nlp_state;
1734 }
1735
1736 /* SLI4 ports have preallocated logical rpis. */
1737 if (phba->sli_rev < LPFC_SLI_REV4)
1738 ndlp->nlp_rpi = mb->un.varWords[0];
1739
1740 ndlp->nlp_flag |= NLP_RPI_REGISTERED;
1741
1742 /* Only if we are not a fabric nport do we issue PRLI */
1743 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
1744 "3066 RegLogin Complete on x%x x%x x%x\n",
1745 did, ndlp->nlp_type, ndlp->nlp_fc4_type);
1746 if (!(ndlp->nlp_type & NLP_FABRIC) &&
1747 (phba->nvmet_support == 0)) {
1748 /* The driver supports FCP and NVME concurrently. If the
1749 * ndlp's nlp_fc4_type is still zero, the driver doesn't
1750 * know what PRLI to send yet. Figure that out now and
1751 * call PRLI depending on the outcome.
1752 */
1753 if (vport->fc_flag & FC_PT2PT) {
1754 /* If we are pt2pt, there is no Fabric to determine
1755 * the FC4 type of the remote nport. So if NVME
1756 * is configured try it.
1757 */
1758 ndlp->nlp_fc4_type |= NLP_FC4_FCP;
1759 if ((phba->cfg_enable_fc4_type == LPFC_ENABLE_BOTH) ||
1760 (phba->cfg_enable_fc4_type == LPFC_ENABLE_NVME)) {
1761 ndlp->nlp_fc4_type |= NLP_FC4_NVME;
1762 /* We need to update the localport also */
1763 lpfc_nvme_update_localport(vport);
1764 }
1765
1766 } else if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
1767 ndlp->nlp_fc4_type |= NLP_FC4_FCP;
1768
1769 } else if (ndlp->nlp_fc4_type == 0) {
1770 rc = lpfc_ns_cmd(vport, SLI_CTNS_GFT_ID,
1771 0, ndlp->nlp_DID);
1772 return ndlp->nlp_state;
1773 }
1774
1775 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1776 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PRLI_ISSUE);
1777 lpfc_issue_els_prli(vport, ndlp, 0);
1778 } else {
1779 if ((vport->fc_flag & FC_PT2PT) && phba->nvmet_support)
1780 phba->targetport->port_id = vport->fc_myDID;
1781
1782 /* Only Fabric ports should transition. NVME target
1783 * must complete PRLI.
1784 */
1785 if (ndlp->nlp_type & NLP_FABRIC) {
1786 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1787 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1788 }
1789 }
1790 return ndlp->nlp_state;
1791 }
1792
1793 static uint32_t
1794 lpfc_device_rm_reglogin_issue(struct lpfc_vport *vport,
1795 struct lpfc_nodelist *ndlp,
1796 void *arg,
1797 uint32_t evt)
1798 {
1799 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1800
1801 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1802 spin_lock_irq(shost->host_lock);
1803 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1804 spin_unlock_irq(shost->host_lock);
1805 return ndlp->nlp_state;
1806 } else {
1807 lpfc_drop_node(vport, ndlp);
1808 return NLP_STE_FREED_NODE;
1809 }
1810 }
1811
1812 static uint32_t
1813 lpfc_device_recov_reglogin_issue(struct lpfc_vport *vport,
1814 struct lpfc_nodelist *ndlp,
1815 void *arg,
1816 uint32_t evt)
1817 {
1818 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1819
1820 /* Don't do anything that will mess up processing of the
1821 * previous RSCN.
1822 */
1823 if (vport->fc_flag & FC_RSCN_DEFERRED)
1824 return ndlp->nlp_state;
1825
1826 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1827 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1828 spin_lock_irq(shost->host_lock);
1829
1830 /* If we are a target we won't immediately transition into PRLI,
1831 * so if REG_LOGIN already completed we don't need to ignore it.
1832 */
1833 if (!(ndlp->nlp_flag & NLP_RPI_REGISTERED) ||
1834 !vport->phba->nvmet_support)
1835 ndlp->nlp_flag |= NLP_IGNR_REG_CMPL;
1836
1837 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1838 spin_unlock_irq(shost->host_lock);
1839 lpfc_disc_set_adisc(vport, ndlp);
1840 return ndlp->nlp_state;
1841 }
1842
1843 static uint32_t
1844 lpfc_rcv_plogi_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1845 void *arg, uint32_t evt)
1846 {
1847 struct lpfc_iocbq *cmdiocb;
1848
1849 cmdiocb = (struct lpfc_iocbq *) arg;
1850
1851 lpfc_rcv_plogi(vport, ndlp, cmdiocb);
1852 return ndlp->nlp_state;
1853 }
1854
1855 static uint32_t
1856 lpfc_rcv_prli_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1857 void *arg, uint32_t evt)
1858 {
1859 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1860
1861 if (!lpfc_rcv_prli_support_check(vport, ndlp, cmdiocb))
1862 return ndlp->nlp_state;
1863 lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1864 return ndlp->nlp_state;
1865 }
1866
1867 static uint32_t
1868 lpfc_rcv_logo_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1869 void *arg, uint32_t evt)
1870 {
1871 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1872
1873 /* Software abort outstanding PRLI before sending acc */
1874 lpfc_els_abort(vport->phba, ndlp);
1875
1876 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1877 return ndlp->nlp_state;
1878 }
1879
1880 static uint32_t
1881 lpfc_rcv_padisc_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1882 void *arg, uint32_t evt)
1883 {
1884 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1885
1886 lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1887 return ndlp->nlp_state;
1888 }
1889
1890 /* This routine is envoked when we rcv a PRLO request from a nport
1891 * we are logged into. We should send back a PRLO rsp setting the
1892 * appropriate bits.
1893 * NEXT STATE = PRLI_ISSUE
1894 */
1895 static uint32_t
1896 lpfc_rcv_prlo_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1897 void *arg, uint32_t evt)
1898 {
1899 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1900
1901 lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
1902 return ndlp->nlp_state;
1903 }
1904
1905 static uint32_t
1906 lpfc_cmpl_prli_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1907 void *arg, uint32_t evt)
1908 {
1909 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1910 struct lpfc_iocbq *cmdiocb, *rspiocb;
1911 struct lpfc_hba *phba = vport->phba;
1912 IOCB_t *irsp;
1913 PRLI *npr;
1914 struct lpfc_nvme_prli *nvpr;
1915 void *temp_ptr;
1916
1917 cmdiocb = (struct lpfc_iocbq *) arg;
1918 rspiocb = cmdiocb->context_un.rsp_iocb;
1919
1920 /* A solicited PRLI is either FCP or NVME. The PRLI cmd/rsp
1921 * format is different so NULL the two PRLI types so that the
1922 * driver correctly gets the correct context.
1923 */
1924 npr = NULL;
1925 nvpr = NULL;
1926 temp_ptr = lpfc_check_elscmpl_iocb(phba, cmdiocb, rspiocb);
1927 if (cmdiocb->iocb_flag & LPFC_PRLI_FCP_REQ)
1928 npr = (PRLI *) temp_ptr;
1929 else if (cmdiocb->iocb_flag & LPFC_PRLI_NVME_REQ)
1930 nvpr = (struct lpfc_nvme_prli *) temp_ptr;
1931
1932 irsp = &rspiocb->iocb;
1933 if (irsp->ulpStatus) {
1934 if ((vport->port_type == LPFC_NPIV_PORT) &&
1935 vport->cfg_restrict_login) {
1936 goto out;
1937 }
1938
1939 /* When the rport rejected the FCP PRLI as unsupported.
1940 * This should only happen in Pt2Pt so an NVME PRLI
1941 * should be outstanding still.
1942 */
1943 if (npr && ndlp->nlp_flag & NLP_FCP_PRLI_RJT) {
1944 ndlp->nlp_fc4_type &= ~NLP_FC4_FCP;
1945 goto out_err;
1946 }
1947
1948 /* The LS Req had some error. Don't let this be a
1949 * target.
1950 */
1951 if ((ndlp->fc4_prli_sent == 1) &&
1952 (ndlp->nlp_state == NLP_STE_PRLI_ISSUE) &&
1953 (ndlp->nlp_type & (NLP_FCP_TARGET | NLP_FCP_INITIATOR)))
1954 /* The FCP PRLI completed successfully but
1955 * the NVME PRLI failed. Since they are sent in
1956 * succession, allow the FCP to complete.
1957 */
1958 goto out_err;
1959
1960 ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
1961 ndlp->nlp_type |= NLP_FCP_INITIATOR;
1962 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1963 return ndlp->nlp_state;
1964 }
1965
1966 if (npr && (npr->acceptRspCode == PRLI_REQ_EXECUTED) &&
1967 (npr->prliType == PRLI_FCP_TYPE)) {
1968 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_DISC,
1969 "6028 FCP NPR PRLI Cmpl Init %d Target %d\n",
1970 npr->initiatorFunc,
1971 npr->targetFunc);
1972 if (npr->initiatorFunc)
1973 ndlp->nlp_type |= NLP_FCP_INITIATOR;
1974 if (npr->targetFunc) {
1975 ndlp->nlp_type |= NLP_FCP_TARGET;
1976 if (npr->writeXferRdyDis)
1977 ndlp->nlp_flag |= NLP_FIRSTBURST;
1978 }
1979 if (npr->Retry)
1980 ndlp->nlp_fcp_info |= NLP_FCP_2_DEVICE;
1981
1982 } else if (nvpr &&
1983 (bf_get_be32(prli_acc_rsp_code, nvpr) ==
1984 PRLI_REQ_EXECUTED) &&
1985 (bf_get_be32(prli_type_code, nvpr) ==
1986 PRLI_NVME_TYPE)) {
1987
1988 /* Complete setting up the remote ndlp personality. */
1989 if (bf_get_be32(prli_init, nvpr))
1990 ndlp->nlp_type |= NLP_NVME_INITIATOR;
1991
1992 /* Target driver cannot solicit NVME FB. */
1993 if (bf_get_be32(prli_tgt, nvpr)) {
1994 /* Complete the nvme target roles. The transport
1995 * needs to know if the rport is capable of
1996 * discovery in addition to its role.
1997 */
1998 ndlp->nlp_type |= NLP_NVME_TARGET;
1999 if (bf_get_be32(prli_disc, nvpr))
2000 ndlp->nlp_type |= NLP_NVME_DISCOVERY;
2001 if ((bf_get_be32(prli_fba, nvpr) == 1) &&
2002 (bf_get_be32(prli_fb_sz, nvpr) > 0) &&
2003 (phba->cfg_nvme_enable_fb) &&
2004 (!phba->nvmet_support)) {
2005 /* Both sides support FB. The target's first
2006 * burst size is a 512 byte encoded value.
2007 */
2008 ndlp->nlp_flag |= NLP_FIRSTBURST;
2009 ndlp->nvme_fb_size = bf_get_be32(prli_fb_sz,
2010 nvpr);
2011 }
2012 }
2013
2014 if (bf_get_be32(prli_recov, nvpr))
2015 ndlp->nlp_fcp_info |= NLP_FCP_2_DEVICE;
2016
2017 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_DISC,
2018 "6029 NVME PRLI Cmpl w1 x%08x "
2019 "w4 x%08x w5 x%08x flag x%x, "
2020 "fcp_info x%x nlp_type x%x\n",
2021 be32_to_cpu(nvpr->word1),
2022 be32_to_cpu(nvpr->word4),
2023 be32_to_cpu(nvpr->word5),
2024 ndlp->nlp_flag, ndlp->nlp_fcp_info,
2025 ndlp->nlp_type);
2026 }
2027 if (!(ndlp->nlp_type & NLP_FCP_TARGET) &&
2028 (vport->port_type == LPFC_NPIV_PORT) &&
2029 vport->cfg_restrict_login) {
2030 out:
2031 spin_lock_irq(shost->host_lock);
2032 ndlp->nlp_flag |= NLP_TARGET_REMOVE;
2033 spin_unlock_irq(shost->host_lock);
2034 lpfc_issue_els_logo(vport, ndlp, 0);
2035
2036 ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
2037 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
2038 return ndlp->nlp_state;
2039 }
2040
2041 out_err:
2042 /* The ndlp state cannot move to MAPPED or UNMAPPED before all PRLIs
2043 * are complete.
2044 */
2045 if (ndlp->fc4_prli_sent == 0) {
2046 ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
2047 if (ndlp->nlp_type & (NLP_FCP_TARGET | NLP_NVME_TARGET))
2048 lpfc_nlp_set_state(vport, ndlp, NLP_STE_MAPPED_NODE);
2049 else if (ndlp->nlp_type &
2050 (NLP_FCP_INITIATOR | NLP_NVME_INITIATOR))
2051 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
2052 } else
2053 lpfc_printf_vlog(vport,
2054 KERN_INFO, LOG_ELS,
2055 "3067 PRLI's still outstanding "
2056 "on x%06x - count %d, Pend Node Mode "
2057 "transition...\n",
2058 ndlp->nlp_DID, ndlp->fc4_prli_sent);
2059
2060 return ndlp->nlp_state;
2061 }
2062
2063 /*! lpfc_device_rm_prli_issue
2064 *
2065 * \pre
2066 * \post
2067 * \param phba
2068 * \param ndlp
2069 * \param arg
2070 * \param evt
2071 * \return uint32_t
2072 *
2073 * \b Description:
2074 * This routine is envoked when we a request to remove a nport we are in the
2075 * process of PRLIing. We should software abort outstanding prli, unreg
2076 * login, send a logout. We will change node state to UNUSED_NODE, put it
2077 * on plogi list so it can be freed when LOGO completes.
2078 *
2079 */
2080
2081 static uint32_t
2082 lpfc_device_rm_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2083 void *arg, uint32_t evt)
2084 {
2085 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2086
2087 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
2088 spin_lock_irq(shost->host_lock);
2089 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
2090 spin_unlock_irq(shost->host_lock);
2091 return ndlp->nlp_state;
2092 } else {
2093 /* software abort outstanding PLOGI */
2094 lpfc_els_abort(vport->phba, ndlp);
2095
2096 lpfc_drop_node(vport, ndlp);
2097 return NLP_STE_FREED_NODE;
2098 }
2099 }
2100
2101
2102 /*! lpfc_device_recov_prli_issue
2103 *
2104 * \pre
2105 * \post
2106 * \param phba
2107 * \param ndlp
2108 * \param arg
2109 * \param evt
2110 * \return uint32_t
2111 *
2112 * \b Description:
2113 * The routine is envoked when the state of a device is unknown, like
2114 * during a link down. We should remove the nodelist entry from the
2115 * unmapped list, issue a UNREG_LOGIN, do a software abort of the
2116 * outstanding PRLI command, then free the node entry.
2117 */
2118 static uint32_t
2119 lpfc_device_recov_prli_issue(struct lpfc_vport *vport,
2120 struct lpfc_nodelist *ndlp,
2121 void *arg,
2122 uint32_t evt)
2123 {
2124 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2125 struct lpfc_hba *phba = vport->phba;
2126
2127 /* Don't do anything that will mess up processing of the
2128 * previous RSCN.
2129 */
2130 if (vport->fc_flag & FC_RSCN_DEFERRED)
2131 return ndlp->nlp_state;
2132
2133 /* software abort outstanding PRLI */
2134 lpfc_els_abort(phba, ndlp);
2135
2136 ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
2137 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
2138 spin_lock_irq(shost->host_lock);
2139 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
2140 spin_unlock_irq(shost->host_lock);
2141 lpfc_disc_set_adisc(vport, ndlp);
2142 return ndlp->nlp_state;
2143 }
2144
2145 static uint32_t
2146 lpfc_rcv_plogi_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2147 void *arg, uint32_t evt)
2148 {
2149 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *)arg;
2150 struct ls_rjt stat;
2151
2152 memset(&stat, 0, sizeof(struct ls_rjt));
2153 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
2154 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
2155 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
2156 return ndlp->nlp_state;
2157 }
2158
2159 static uint32_t
2160 lpfc_rcv_prli_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2161 void *arg, uint32_t evt)
2162 {
2163 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *)arg;
2164 struct ls_rjt stat;
2165
2166 memset(&stat, 0, sizeof(struct ls_rjt));
2167 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
2168 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
2169 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
2170 return ndlp->nlp_state;
2171 }
2172
2173 static uint32_t
2174 lpfc_rcv_logo_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2175 void *arg, uint32_t evt)
2176 {
2177 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2178 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *)arg;
2179
2180 spin_lock_irq(shost->host_lock);
2181 ndlp->nlp_flag |= NLP_LOGO_ACC;
2182 spin_unlock_irq(shost->host_lock);
2183 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
2184 return ndlp->nlp_state;
2185 }
2186
2187 static uint32_t
2188 lpfc_rcv_padisc_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2189 void *arg, uint32_t evt)
2190 {
2191 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *)arg;
2192 struct ls_rjt stat;
2193
2194 memset(&stat, 0, sizeof(struct ls_rjt));
2195 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
2196 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
2197 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
2198 return ndlp->nlp_state;
2199 }
2200
2201 static uint32_t
2202 lpfc_rcv_prlo_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2203 void *arg, uint32_t evt)
2204 {
2205 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *)arg;
2206 struct ls_rjt stat;
2207
2208 memset(&stat, 0, sizeof(struct ls_rjt));
2209 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
2210 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
2211 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
2212 return ndlp->nlp_state;
2213 }
2214
2215 static uint32_t
2216 lpfc_cmpl_logo_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2217 void *arg, uint32_t evt)
2218 {
2219 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2220
2221 ndlp->nlp_prev_state = NLP_STE_LOGO_ISSUE;
2222 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
2223 spin_lock_irq(shost->host_lock);
2224 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
2225 spin_unlock_irq(shost->host_lock);
2226 lpfc_disc_set_adisc(vport, ndlp);
2227 return ndlp->nlp_state;
2228 }
2229
2230 static uint32_t
2231 lpfc_device_rm_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2232 void *arg, uint32_t evt)
2233 {
2234 /*
2235 * DevLoss has timed out and is calling for Device Remove.
2236 * In this case, abort the LOGO and cleanup the ndlp
2237 */
2238
2239 lpfc_unreg_rpi(vport, ndlp);
2240 /* software abort outstanding PLOGI */
2241 lpfc_els_abort(vport->phba, ndlp);
2242 lpfc_drop_node(vport, ndlp);
2243 return NLP_STE_FREED_NODE;
2244 }
2245
2246 static uint32_t
2247 lpfc_device_recov_logo_issue(struct lpfc_vport *vport,
2248 struct lpfc_nodelist *ndlp,
2249 void *arg, uint32_t evt)
2250 {
2251 /*
2252 * Device Recovery events have no meaning for a node with a LOGO
2253 * outstanding. The LOGO has to complete first and handle the
2254 * node from that point.
2255 */
2256 return ndlp->nlp_state;
2257 }
2258
2259 static uint32_t
2260 lpfc_rcv_plogi_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2261 void *arg, uint32_t evt)
2262 {
2263 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2264
2265 lpfc_rcv_plogi(vport, ndlp, cmdiocb);
2266 return ndlp->nlp_state;
2267 }
2268
2269 static uint32_t
2270 lpfc_rcv_prli_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2271 void *arg, uint32_t evt)
2272 {
2273 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2274
2275 if (!lpfc_rcv_prli_support_check(vport, ndlp, cmdiocb))
2276 return ndlp->nlp_state;
2277
2278 lpfc_rcv_prli(vport, ndlp, cmdiocb);
2279 lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
2280 return ndlp->nlp_state;
2281 }
2282
2283 static uint32_t
2284 lpfc_rcv_logo_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2285 void *arg, uint32_t evt)
2286 {
2287 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2288
2289 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
2290 return ndlp->nlp_state;
2291 }
2292
2293 static uint32_t
2294 lpfc_rcv_padisc_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2295 void *arg, uint32_t evt)
2296 {
2297 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2298
2299 lpfc_rcv_padisc(vport, ndlp, cmdiocb);
2300 return ndlp->nlp_state;
2301 }
2302
2303 static uint32_t
2304 lpfc_rcv_prlo_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2305 void *arg, uint32_t evt)
2306 {
2307 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2308
2309 lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
2310 return ndlp->nlp_state;
2311 }
2312
2313 static uint32_t
2314 lpfc_device_recov_unmap_node(struct lpfc_vport *vport,
2315 struct lpfc_nodelist *ndlp,
2316 void *arg,
2317 uint32_t evt)
2318 {
2319 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2320
2321 ndlp->nlp_prev_state = NLP_STE_UNMAPPED_NODE;
2322 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
2323 spin_lock_irq(shost->host_lock);
2324 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
2325 spin_unlock_irq(shost->host_lock);
2326 lpfc_disc_set_adisc(vport, ndlp);
2327
2328 return ndlp->nlp_state;
2329 }
2330
2331 static uint32_t
2332 lpfc_rcv_plogi_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2333 void *arg, uint32_t evt)
2334 {
2335 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2336
2337 lpfc_rcv_plogi(vport, ndlp, cmdiocb);
2338 return ndlp->nlp_state;
2339 }
2340
2341 static uint32_t
2342 lpfc_rcv_prli_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2343 void *arg, uint32_t evt)
2344 {
2345 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2346
2347 if (!lpfc_rcv_prli_support_check(vport, ndlp, cmdiocb))
2348 return ndlp->nlp_state;
2349 lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
2350 return ndlp->nlp_state;
2351 }
2352
2353 static uint32_t
2354 lpfc_rcv_logo_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2355 void *arg, uint32_t evt)
2356 {
2357 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2358
2359 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
2360 return ndlp->nlp_state;
2361 }
2362
2363 static uint32_t
2364 lpfc_rcv_padisc_mapped_node(struct lpfc_vport *vport,
2365 struct lpfc_nodelist *ndlp,
2366 void *arg, uint32_t evt)
2367 {
2368 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2369
2370 lpfc_rcv_padisc(vport, ndlp, cmdiocb);
2371 return ndlp->nlp_state;
2372 }
2373
2374 static uint32_t
2375 lpfc_rcv_prlo_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2376 void *arg, uint32_t evt)
2377 {
2378 struct lpfc_hba *phba = vport->phba;
2379 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2380
2381 /* flush the target */
2382 lpfc_sli_abort_iocb(vport, &phba->sli.sli3_ring[LPFC_FCP_RING],
2383 ndlp->nlp_sid, 0, LPFC_CTX_TGT);
2384
2385 /* Treat like rcv logo */
2386 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_PRLO);
2387 return ndlp->nlp_state;
2388 }
2389
2390 static uint32_t
2391 lpfc_device_recov_mapped_node(struct lpfc_vport *vport,
2392 struct lpfc_nodelist *ndlp,
2393 void *arg,
2394 uint32_t evt)
2395 {
2396 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2397
2398 ndlp->nlp_prev_state = NLP_STE_MAPPED_NODE;
2399 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
2400 spin_lock_irq(shost->host_lock);
2401 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
2402 spin_unlock_irq(shost->host_lock);
2403 lpfc_disc_set_adisc(vport, ndlp);
2404 return ndlp->nlp_state;
2405 }
2406
2407 static uint32_t
2408 lpfc_rcv_plogi_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2409 void *arg, uint32_t evt)
2410 {
2411 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2412 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2413
2414 /* Ignore PLOGI if we have an outstanding LOGO */
2415 if (ndlp->nlp_flag & (NLP_LOGO_SND | NLP_LOGO_ACC))
2416 return ndlp->nlp_state;
2417 if (lpfc_rcv_plogi(vport, ndlp, cmdiocb)) {
2418 lpfc_cancel_retry_delay_tmo(vport, ndlp);
2419 spin_lock_irq(shost->host_lock);
2420 ndlp->nlp_flag &= ~(NLP_NPR_ADISC | NLP_NPR_2B_DISC);
2421 spin_unlock_irq(shost->host_lock);
2422 } else if (!(ndlp->nlp_flag & NLP_NPR_2B_DISC)) {
2423 /* send PLOGI immediately, move to PLOGI issue state */
2424 if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) {
2425 ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
2426 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
2427 lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
2428 }
2429 }
2430 return ndlp->nlp_state;
2431 }
2432
2433 static uint32_t
2434 lpfc_rcv_prli_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2435 void *arg, uint32_t evt)
2436 {
2437 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2438 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2439 struct ls_rjt stat;
2440
2441 memset(&stat, 0, sizeof (struct ls_rjt));
2442 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
2443 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
2444 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
2445
2446 if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) {
2447 if (ndlp->nlp_flag & NLP_NPR_ADISC) {
2448 spin_lock_irq(shost->host_lock);
2449 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
2450 ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
2451 spin_unlock_irq(shost->host_lock);
2452 lpfc_nlp_set_state(vport, ndlp, NLP_STE_ADISC_ISSUE);
2453 lpfc_issue_els_adisc(vport, ndlp, 0);
2454 } else {
2455 ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
2456 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
2457 lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
2458 }
2459 }
2460 return ndlp->nlp_state;
2461 }
2462
2463 static uint32_t
2464 lpfc_rcv_logo_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2465 void *arg, uint32_t evt)
2466 {
2467 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2468
2469 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
2470 return ndlp->nlp_state;
2471 }
2472
2473 static uint32_t
2474 lpfc_rcv_padisc_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2475 void *arg, uint32_t evt)
2476 {
2477 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2478
2479 lpfc_rcv_padisc(vport, ndlp, cmdiocb);
2480 /*
2481 * Do not start discovery if discovery is about to start
2482 * or discovery in progress for this node. Starting discovery
2483 * here will affect the counting of discovery threads.
2484 */
2485 if (!(ndlp->nlp_flag & NLP_DELAY_TMO) &&
2486 !(ndlp->nlp_flag & NLP_NPR_2B_DISC)) {
2487 if (ndlp->nlp_flag & NLP_NPR_ADISC) {
2488 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
2489 ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
2490 lpfc_nlp_set_state(vport, ndlp, NLP_STE_ADISC_ISSUE);
2491 lpfc_issue_els_adisc(vport, ndlp, 0);
2492 } else {
2493 ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
2494 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
2495 lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
2496 }
2497 }
2498 return ndlp->nlp_state;
2499 }
2500
2501 static uint32_t
2502 lpfc_rcv_prlo_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2503 void *arg, uint32_t evt)
2504 {
2505 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2506 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2507
2508 spin_lock_irq(shost->host_lock);
2509 ndlp->nlp_flag |= NLP_LOGO_ACC;
2510 spin_unlock_irq(shost->host_lock);
2511
2512 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
2513
2514 if ((ndlp->nlp_flag & NLP_DELAY_TMO) == 0) {
2515 mod_timer(&ndlp->nlp_delayfunc,
2516 jiffies + msecs_to_jiffies(1000 * 1));
2517 spin_lock_irq(shost->host_lock);
2518 ndlp->nlp_flag |= NLP_DELAY_TMO;
2519 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
2520 spin_unlock_irq(shost->host_lock);
2521 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
2522 } else {
2523 spin_lock_irq(shost->host_lock);
2524 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
2525 spin_unlock_irq(shost->host_lock);
2526 }
2527 return ndlp->nlp_state;
2528 }
2529
2530 static uint32_t
2531 lpfc_cmpl_plogi_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2532 void *arg, uint32_t evt)
2533 {
2534 struct lpfc_iocbq *cmdiocb, *rspiocb;
2535 IOCB_t *irsp;
2536 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2537
2538 cmdiocb = (struct lpfc_iocbq *) arg;
2539 rspiocb = cmdiocb->context_un.rsp_iocb;
2540
2541 irsp = &rspiocb->iocb;
2542 if (irsp->ulpStatus) {
2543 spin_lock_irq(shost->host_lock);
2544 ndlp->nlp_flag |= NLP_DEFER_RM;
2545 spin_unlock_irq(shost->host_lock);
2546 return NLP_STE_FREED_NODE;
2547 }
2548 return ndlp->nlp_state;
2549 }
2550
2551 static uint32_t
2552 lpfc_cmpl_prli_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2553 void *arg, uint32_t evt)
2554 {
2555 struct lpfc_iocbq *cmdiocb, *rspiocb;
2556 IOCB_t *irsp;
2557
2558 cmdiocb = (struct lpfc_iocbq *) arg;
2559 rspiocb = cmdiocb->context_un.rsp_iocb;
2560
2561 irsp = &rspiocb->iocb;
2562 if (irsp->ulpStatus && (ndlp->nlp_flag & NLP_NODEV_REMOVE)) {
2563 lpfc_drop_node(vport, ndlp);
2564 return NLP_STE_FREED_NODE;
2565 }
2566 return ndlp->nlp_state;
2567 }
2568
2569 static uint32_t
2570 lpfc_cmpl_logo_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2571 void *arg, uint32_t evt)
2572 {
2573 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2574
2575 /* For the fabric port just clear the fc flags. */
2576 if (ndlp->nlp_DID == Fabric_DID) {
2577 spin_lock_irq(shost->host_lock);
2578 vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP);
2579 spin_unlock_irq(shost->host_lock);
2580 }
2581 lpfc_unreg_rpi(vport, ndlp);
2582 return ndlp->nlp_state;
2583 }
2584
2585 static uint32_t
2586 lpfc_cmpl_adisc_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2587 void *arg, uint32_t evt)
2588 {
2589 struct lpfc_iocbq *cmdiocb, *rspiocb;
2590 IOCB_t *irsp;
2591
2592 cmdiocb = (struct lpfc_iocbq *) arg;
2593 rspiocb = cmdiocb->context_un.rsp_iocb;
2594
2595 irsp = &rspiocb->iocb;
2596 if (irsp->ulpStatus && (ndlp->nlp_flag & NLP_NODEV_REMOVE)) {
2597 lpfc_drop_node(vport, ndlp);
2598 return NLP_STE_FREED_NODE;
2599 }
2600 return ndlp->nlp_state;
2601 }
2602
2603 static uint32_t
2604 lpfc_cmpl_reglogin_npr_node(struct lpfc_vport *vport,
2605 struct lpfc_nodelist *ndlp,
2606 void *arg, uint32_t evt)
2607 {
2608 LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg;
2609 MAILBOX_t *mb = &pmb->u.mb;
2610
2611 if (!mb->mbxStatus) {
2612 /* SLI4 ports have preallocated logical rpis. */
2613 if (vport->phba->sli_rev < LPFC_SLI_REV4)
2614 ndlp->nlp_rpi = mb->un.varWords[0];
2615 ndlp->nlp_flag |= NLP_RPI_REGISTERED;
2616 if (ndlp->nlp_flag & NLP_LOGO_ACC) {
2617 lpfc_unreg_rpi(vport, ndlp);
2618 }
2619 } else {
2620 if (ndlp->nlp_flag & NLP_NODEV_REMOVE) {
2621 lpfc_drop_node(vport, ndlp);
2622 return NLP_STE_FREED_NODE;
2623 }
2624 }
2625 return ndlp->nlp_state;
2626 }
2627
2628 static uint32_t
2629 lpfc_device_rm_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2630 void *arg, uint32_t evt)
2631 {
2632 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2633
2634 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
2635 spin_lock_irq(shost->host_lock);
2636 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
2637 spin_unlock_irq(shost->host_lock);
2638 return ndlp->nlp_state;
2639 }
2640 lpfc_drop_node(vport, ndlp);
2641 return NLP_STE_FREED_NODE;
2642 }
2643
2644 static uint32_t
2645 lpfc_device_recov_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2646 void *arg, uint32_t evt)
2647 {
2648 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2649
2650 /* Don't do anything that will mess up processing of the
2651 * previous RSCN.
2652 */
2653 if (vport->fc_flag & FC_RSCN_DEFERRED)
2654 return ndlp->nlp_state;
2655
2656 lpfc_cancel_retry_delay_tmo(vport, ndlp);
2657 spin_lock_irq(shost->host_lock);
2658 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
2659 spin_unlock_irq(shost->host_lock);
2660 return ndlp->nlp_state;
2661 }
2662
2663
2664 /* This next section defines the NPort Discovery State Machine */
2665
2666 /* There are 4 different double linked lists nodelist entries can reside on.
2667 * The plogi list and adisc list are used when Link Up discovery or RSCN
2668 * processing is needed. Each list holds the nodes that we will send PLOGI
2669 * or ADISC on. These lists will keep track of what nodes will be effected
2670 * by an RSCN, or a Link Up (Typically, all nodes are effected on Link Up).
2671 * The unmapped_list will contain all nodes that we have successfully logged
2672 * into at the Fibre Channel level. The mapped_list will contain all nodes
2673 * that are mapped FCP targets.
2674 */
2675 /*
2676 * The bind list is a list of undiscovered (potentially non-existent) nodes
2677 * that we have saved binding information on. This information is used when
2678 * nodes transition from the unmapped to the mapped list.
2679 */
2680 /* For UNUSED_NODE state, the node has just been allocated .
2681 * For PLOGI_ISSUE and REG_LOGIN_ISSUE, the node is on
2682 * the PLOGI list. For REG_LOGIN_COMPL, the node is taken off the PLOGI list
2683 * and put on the unmapped list. For ADISC processing, the node is taken off
2684 * the ADISC list and placed on either the mapped or unmapped list (depending
2685 * on its previous state). Once on the unmapped list, a PRLI is issued and the
2686 * state changed to PRLI_ISSUE. When the PRLI completion occurs, the state is
2687 * changed to UNMAPPED_NODE. If the completion indicates a mapped
2688 * node, the node is taken off the unmapped list. The binding list is checked
2689 * for a valid binding, or a binding is automatically assigned. If binding
2690 * assignment is unsuccessful, the node is left on the unmapped list. If
2691 * binding assignment is successful, the associated binding list entry (if
2692 * any) is removed, and the node is placed on the mapped list.
2693 */
2694 /*
2695 * For a Link Down, all nodes on the ADISC, PLOGI, unmapped or mapped
2696 * lists will receive a DEVICE_RECOVERY event. If the linkdown or devloss timers
2697 * expire, all effected nodes will receive a DEVICE_RM event.
2698 */
2699 /*
2700 * For a Link Up or RSCN, all nodes will move from the mapped / unmapped lists
2701 * to either the ADISC or PLOGI list. After a Nameserver query or ALPA loopmap
2702 * check, additional nodes may be added or removed (via DEVICE_RM) to / from
2703 * the PLOGI or ADISC lists. Once the PLOGI and ADISC lists are populated,
2704 * we will first process the ADISC list. 32 entries are processed initially and
2705 * ADISC is initited for each one. Completions / Events for each node are
2706 * funnelled thru the state machine. As each node finishes ADISC processing, it
2707 * starts ADISC for any nodes waiting for ADISC processing. If no nodes are
2708 * waiting, and the ADISC list count is identically 0, then we are done. For
2709 * Link Up discovery, since all nodes on the PLOGI list are UNREG_LOGIN'ed, we
2710 * can issue a CLEAR_LA and reenable Link Events. Next we will process the PLOGI
2711 * list. 32 entries are processed initially and PLOGI is initited for each one.
2712 * Completions / Events for each node are funnelled thru the state machine. As
2713 * each node finishes PLOGI processing, it starts PLOGI for any nodes waiting
2714 * for PLOGI processing. If no nodes are waiting, and the PLOGI list count is
2715 * indentically 0, then we are done. We have now completed discovery / RSCN
2716 * handling. Upon completion, ALL nodes should be on either the mapped or
2717 * unmapped lists.
2718 */
2719
2720 static uint32_t (*lpfc_disc_action[NLP_STE_MAX_STATE * NLP_EVT_MAX_EVENT])
2721 (struct lpfc_vport *, struct lpfc_nodelist *, void *, uint32_t) = {
2722 /* Action routine Event Current State */
2723 lpfc_rcv_plogi_unused_node, /* RCV_PLOGI UNUSED_NODE */
2724 lpfc_rcv_els_unused_node, /* RCV_PRLI */
2725 lpfc_rcv_logo_unused_node, /* RCV_LOGO */
2726 lpfc_rcv_els_unused_node, /* RCV_ADISC */
2727 lpfc_rcv_els_unused_node, /* RCV_PDISC */
2728 lpfc_rcv_els_unused_node, /* RCV_PRLO */
2729 lpfc_disc_illegal, /* CMPL_PLOGI */
2730 lpfc_disc_illegal, /* CMPL_PRLI */
2731 lpfc_cmpl_logo_unused_node, /* CMPL_LOGO */
2732 lpfc_disc_illegal, /* CMPL_ADISC */
2733 lpfc_disc_illegal, /* CMPL_REG_LOGIN */
2734 lpfc_device_rm_unused_node, /* DEVICE_RM */
2735 lpfc_device_recov_unused_node, /* DEVICE_RECOVERY */
2736
2737 lpfc_rcv_plogi_plogi_issue, /* RCV_PLOGI PLOGI_ISSUE */
2738 lpfc_rcv_prli_plogi_issue, /* RCV_PRLI */
2739 lpfc_rcv_logo_plogi_issue, /* RCV_LOGO */
2740 lpfc_rcv_els_plogi_issue, /* RCV_ADISC */
2741 lpfc_rcv_els_plogi_issue, /* RCV_PDISC */
2742 lpfc_rcv_els_plogi_issue, /* RCV_PRLO */
2743 lpfc_cmpl_plogi_plogi_issue, /* CMPL_PLOGI */
2744 lpfc_disc_illegal, /* CMPL_PRLI */
2745 lpfc_cmpl_logo_plogi_issue, /* CMPL_LOGO */
2746 lpfc_disc_illegal, /* CMPL_ADISC */
2747 lpfc_cmpl_reglogin_plogi_issue,/* CMPL_REG_LOGIN */
2748 lpfc_device_rm_plogi_issue, /* DEVICE_RM */
2749 lpfc_device_recov_plogi_issue, /* DEVICE_RECOVERY */
2750
2751 lpfc_rcv_plogi_adisc_issue, /* RCV_PLOGI ADISC_ISSUE */
2752 lpfc_rcv_prli_adisc_issue, /* RCV_PRLI */
2753 lpfc_rcv_logo_adisc_issue, /* RCV_LOGO */
2754 lpfc_rcv_padisc_adisc_issue, /* RCV_ADISC */
2755 lpfc_rcv_padisc_adisc_issue, /* RCV_PDISC */
2756 lpfc_rcv_prlo_adisc_issue, /* RCV_PRLO */
2757 lpfc_disc_illegal, /* CMPL_PLOGI */
2758 lpfc_disc_illegal, /* CMPL_PRLI */
2759 lpfc_disc_illegal, /* CMPL_LOGO */
2760 lpfc_cmpl_adisc_adisc_issue, /* CMPL_ADISC */
2761 lpfc_disc_illegal, /* CMPL_REG_LOGIN */
2762 lpfc_device_rm_adisc_issue, /* DEVICE_RM */
2763 lpfc_device_recov_adisc_issue, /* DEVICE_RECOVERY */
2764
2765 lpfc_rcv_plogi_reglogin_issue, /* RCV_PLOGI REG_LOGIN_ISSUE */
2766 lpfc_rcv_prli_reglogin_issue, /* RCV_PLOGI */
2767 lpfc_rcv_logo_reglogin_issue, /* RCV_LOGO */
2768 lpfc_rcv_padisc_reglogin_issue, /* RCV_ADISC */
2769 lpfc_rcv_padisc_reglogin_issue, /* RCV_PDISC */
2770 lpfc_rcv_prlo_reglogin_issue, /* RCV_PRLO */
2771 lpfc_cmpl_plogi_illegal, /* CMPL_PLOGI */
2772 lpfc_disc_illegal, /* CMPL_PRLI */
2773 lpfc_disc_illegal, /* CMPL_LOGO */
2774 lpfc_disc_illegal, /* CMPL_ADISC */
2775 lpfc_cmpl_reglogin_reglogin_issue,/* CMPL_REG_LOGIN */
2776 lpfc_device_rm_reglogin_issue, /* DEVICE_RM */
2777 lpfc_device_recov_reglogin_issue,/* DEVICE_RECOVERY */
2778
2779 lpfc_rcv_plogi_prli_issue, /* RCV_PLOGI PRLI_ISSUE */
2780 lpfc_rcv_prli_prli_issue, /* RCV_PRLI */
2781 lpfc_rcv_logo_prli_issue, /* RCV_LOGO */
2782 lpfc_rcv_padisc_prli_issue, /* RCV_ADISC */
2783 lpfc_rcv_padisc_prli_issue, /* RCV_PDISC */
2784 lpfc_rcv_prlo_prli_issue, /* RCV_PRLO */
2785 lpfc_cmpl_plogi_illegal, /* CMPL_PLOGI */
2786 lpfc_cmpl_prli_prli_issue, /* CMPL_PRLI */
2787 lpfc_disc_illegal, /* CMPL_LOGO */
2788 lpfc_disc_illegal, /* CMPL_ADISC */
2789 lpfc_disc_illegal, /* CMPL_REG_LOGIN */
2790 lpfc_device_rm_prli_issue, /* DEVICE_RM */
2791 lpfc_device_recov_prli_issue, /* DEVICE_RECOVERY */
2792
2793 lpfc_rcv_plogi_logo_issue, /* RCV_PLOGI LOGO_ISSUE */
2794 lpfc_rcv_prli_logo_issue, /* RCV_PRLI */
2795 lpfc_rcv_logo_logo_issue, /* RCV_LOGO */
2796 lpfc_rcv_padisc_logo_issue, /* RCV_ADISC */
2797 lpfc_rcv_padisc_logo_issue, /* RCV_PDISC */
2798 lpfc_rcv_prlo_logo_issue, /* RCV_PRLO */
2799 lpfc_cmpl_plogi_illegal, /* CMPL_PLOGI */
2800 lpfc_disc_illegal, /* CMPL_PRLI */
2801 lpfc_cmpl_logo_logo_issue, /* CMPL_LOGO */
2802 lpfc_disc_illegal, /* CMPL_ADISC */
2803 lpfc_disc_illegal, /* CMPL_REG_LOGIN */
2804 lpfc_device_rm_logo_issue, /* DEVICE_RM */
2805 lpfc_device_recov_logo_issue, /* DEVICE_RECOVERY */
2806
2807 lpfc_rcv_plogi_unmap_node, /* RCV_PLOGI UNMAPPED_NODE */
2808 lpfc_rcv_prli_unmap_node, /* RCV_PRLI */
2809 lpfc_rcv_logo_unmap_node, /* RCV_LOGO */
2810 lpfc_rcv_padisc_unmap_node, /* RCV_ADISC */
2811 lpfc_rcv_padisc_unmap_node, /* RCV_PDISC */
2812 lpfc_rcv_prlo_unmap_node, /* RCV_PRLO */
2813 lpfc_disc_illegal, /* CMPL_PLOGI */
2814 lpfc_disc_illegal, /* CMPL_PRLI */
2815 lpfc_disc_illegal, /* CMPL_LOGO */
2816 lpfc_disc_illegal, /* CMPL_ADISC */
2817 lpfc_disc_illegal, /* CMPL_REG_LOGIN */
2818 lpfc_disc_illegal, /* DEVICE_RM */
2819 lpfc_device_recov_unmap_node, /* DEVICE_RECOVERY */
2820
2821 lpfc_rcv_plogi_mapped_node, /* RCV_PLOGI MAPPED_NODE */
2822 lpfc_rcv_prli_mapped_node, /* RCV_PRLI */
2823 lpfc_rcv_logo_mapped_node, /* RCV_LOGO */
2824 lpfc_rcv_padisc_mapped_node, /* RCV_ADISC */
2825 lpfc_rcv_padisc_mapped_node, /* RCV_PDISC */
2826 lpfc_rcv_prlo_mapped_node, /* RCV_PRLO */
2827 lpfc_disc_illegal, /* CMPL_PLOGI */
2828 lpfc_disc_illegal, /* CMPL_PRLI */
2829 lpfc_disc_illegal, /* CMPL_LOGO */
2830 lpfc_disc_illegal, /* CMPL_ADISC */
2831 lpfc_disc_illegal, /* CMPL_REG_LOGIN */
2832 lpfc_disc_illegal, /* DEVICE_RM */
2833 lpfc_device_recov_mapped_node, /* DEVICE_RECOVERY */
2834
2835 lpfc_rcv_plogi_npr_node, /* RCV_PLOGI NPR_NODE */
2836 lpfc_rcv_prli_npr_node, /* RCV_PRLI */
2837 lpfc_rcv_logo_npr_node, /* RCV_LOGO */
2838 lpfc_rcv_padisc_npr_node, /* RCV_ADISC */
2839 lpfc_rcv_padisc_npr_node, /* RCV_PDISC */
2840 lpfc_rcv_prlo_npr_node, /* RCV_PRLO */
2841 lpfc_cmpl_plogi_npr_node, /* CMPL_PLOGI */
2842 lpfc_cmpl_prli_npr_node, /* CMPL_PRLI */
2843 lpfc_cmpl_logo_npr_node, /* CMPL_LOGO */
2844 lpfc_cmpl_adisc_npr_node, /* CMPL_ADISC */
2845 lpfc_cmpl_reglogin_npr_node, /* CMPL_REG_LOGIN */
2846 lpfc_device_rm_npr_node, /* DEVICE_RM */
2847 lpfc_device_recov_npr_node, /* DEVICE_RECOVERY */
2848 };
2849
2850 int
2851 lpfc_disc_state_machine(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2852 void *arg, uint32_t evt)
2853 {
2854 uint32_t cur_state, rc;
2855 uint32_t(*func) (struct lpfc_vport *, struct lpfc_nodelist *, void *,
2856 uint32_t);
2857 uint32_t got_ndlp = 0;
2858
2859 if (lpfc_nlp_get(ndlp))
2860 got_ndlp = 1;
2861
2862 cur_state = ndlp->nlp_state;
2863
2864 /* DSM in event <evt> on NPort <nlp_DID> in state <cur_state> */
2865 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
2866 "0211 DSM in event x%x on NPort x%x in "
2867 "state %d Data: x%x\n",
2868 evt, ndlp->nlp_DID, cur_state, ndlp->nlp_flag);
2869
2870 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_DSM,
2871 "DSM in: evt:%d ste:%d did:x%x",
2872 evt, cur_state, ndlp->nlp_DID);
2873
2874 func = lpfc_disc_action[(cur_state * NLP_EVT_MAX_EVENT) + evt];
2875 rc = (func) (vport, ndlp, arg, evt);
2876
2877 /* DSM out state <rc> on NPort <nlp_DID> */
2878 if (got_ndlp) {
2879 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
2880 "0212 DSM out state %d on NPort x%x Data: x%x\n",
2881 rc, ndlp->nlp_DID, ndlp->nlp_flag);
2882
2883 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_DSM,
2884 "DSM out: ste:%d did:x%x flg:x%x",
2885 rc, ndlp->nlp_DID, ndlp->nlp_flag);
2886 /* Decrement the ndlp reference count held for this function */
2887 lpfc_nlp_put(ndlp);
2888 } else {
2889 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
2890 "0213 DSM out state %d on NPort free\n", rc);
2891
2892 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_DSM,
2893 "DSM out: ste:%d did:x%x flg:x%x",
2894 rc, 0, 0);
2895 }
2896
2897 return rc;
2898 }
CRIS linux kernel tree