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mic: vop: Fix use-after-free on remove
[linux/fpc-iii.git] / drivers / scsi / lpfc / lpfc_nportdisc.c
blob96bc3789a1662e650f5b70491b61679ab88fc9ba
1 /*******************************************************************
2 * This file is part of the Emulex Linux Device Driver for *
3 * Fibre Channel Host Bus Adapters. *
4 * Copyright (C) 2017-2018 Broadcom. All Rights Reserved. The term *
5 * “Broadcom” refers to Broadcom Inc. 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->ctx_ndlp = 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->ctx_buf;
539 ndlp = (struct lpfc_nodelist *)mboxq->ctx_ndlp;
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 spin_lock_irq(shost->host_lock);
840 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
841 spin_unlock_irq(shost->host_lock);
842 return 0;
843 }
844
845 if (!(vport->fc_flag & FC_PT2PT)) {
846 /* Check config parameter use-adisc or FCP-2 */
847 if ((vport->cfg_use_adisc && (vport->fc_flag & FC_RSCN_MODE)) ||
848 ((ndlp->nlp_fcp_info & NLP_FCP_2_DEVICE) &&
849 (ndlp->nlp_type & NLP_FCP_TARGET))) {
850 spin_lock_irq(shost->host_lock);
851 ndlp->nlp_flag |= NLP_NPR_ADISC;
852 spin_unlock_irq(shost->host_lock);
853 return 1;
854 }
855 }
856
857 spin_lock_irq(shost->host_lock);
858 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
859 spin_unlock_irq(shost->host_lock);
860 lpfc_unreg_rpi(vport, ndlp);
861 return 0;
862 }
863
864 /**
865 * lpfc_release_rpi - Release a RPI by issuing unreg_login mailbox cmd.
866 * @phba : Pointer to lpfc_hba structure.
867 * @vport: Pointer to lpfc_vport structure.
868 * @rpi : rpi to be release.
869 *
870 * This function will send a unreg_login mailbox command to the firmware
871 * to release a rpi.
872 **/
873 void
874 lpfc_release_rpi(struct lpfc_hba *phba, struct lpfc_vport *vport,
875 struct lpfc_nodelist *ndlp, uint16_t rpi)
876 {
877 LPFC_MBOXQ_t *pmb;
878 int rc;
879
880 /* If there is already an UNREG in progress for this ndlp,
881 * no need to queue up another one.
882 */
883 if (ndlp->nlp_flag & NLP_UNREG_INP) {
884 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
885 "1435 release_rpi SKIP UNREG x%x on "
886 "NPort x%x deferred x%x flg x%x "
887 "Data: %p\n",
888 ndlp->nlp_rpi, ndlp->nlp_DID,
889 ndlp->nlp_defer_did,
890 ndlp->nlp_flag, ndlp);
891 return;
892 }
893
894 pmb = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool,
895 GFP_KERNEL);
896 if (!pmb)
897 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
898 "2796 mailbox memory allocation failed \n");
899 else {
900 lpfc_unreg_login(phba, vport->vpi, rpi, pmb);
901 pmb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
902 pmb->vport = vport;
903 pmb->ctx_ndlp = ndlp;
904
905 if (((ndlp->nlp_DID & Fabric_DID_MASK) != Fabric_DID_MASK) &&
906 (!(vport->fc_flag & FC_OFFLINE_MODE)))
907 ndlp->nlp_flag |= NLP_UNREG_INP;
908
909 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
910 "1437 release_rpi UNREG x%x "
911 "on NPort x%x flg x%x\n",
912 ndlp->nlp_rpi, ndlp->nlp_DID, ndlp->nlp_flag);
913
914 rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);
915 if (rc == MBX_NOT_FINISHED)
916 mempool_free(pmb, phba->mbox_mem_pool);
917 }
918 }
919
920 static uint32_t
921 lpfc_disc_illegal(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
922 void *arg, uint32_t evt)
923 {
924 struct lpfc_hba *phba;
925 LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg;
926 uint16_t rpi;
927
928 phba = vport->phba;
929 /* Release the RPI if reglogin completing */
930 if (!(phba->pport->load_flag & FC_UNLOADING) &&
931 (evt == NLP_EVT_CMPL_REG_LOGIN) &&
932 (!pmb->u.mb.mbxStatus)) {
933 rpi = pmb->u.mb.un.varWords[0];
934 lpfc_release_rpi(phba, vport, ndlp, rpi);
935 }
936 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
937 "0271 Illegal State Transition: node x%x "
938 "event x%x, state x%x Data: x%x x%x\n",
939 ndlp->nlp_DID, evt, ndlp->nlp_state, ndlp->nlp_rpi,
940 ndlp->nlp_flag);
941 return ndlp->nlp_state;
942 }
943
944 static uint32_t
945 lpfc_cmpl_plogi_illegal(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
946 void *arg, uint32_t evt)
947 {
948 /* This transition is only legal if we previously
949 * rcv'ed a PLOGI. Since we don't want 2 discovery threads
950 * working on the same NPortID, do nothing for this thread
951 * to stop it.
952 */
953 if (!(ndlp->nlp_flag & NLP_RCV_PLOGI)) {
954 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
955 "0272 Illegal State Transition: node x%x "
956 "event x%x, state x%x Data: x%x x%x\n",
957 ndlp->nlp_DID, evt, ndlp->nlp_state, ndlp->nlp_rpi,
958 ndlp->nlp_flag);
959 }
960 return ndlp->nlp_state;
961 }
962
963 /* Start of Discovery State Machine routines */
964
965 static uint32_t
966 lpfc_rcv_plogi_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
967 void *arg, uint32_t evt)
968 {
969 struct lpfc_iocbq *cmdiocb;
970
971 cmdiocb = (struct lpfc_iocbq *) arg;
972
973 if (lpfc_rcv_plogi(vport, ndlp, cmdiocb)) {
974 return ndlp->nlp_state;
975 }
976 return NLP_STE_FREED_NODE;
977 }
978
979 static uint32_t
980 lpfc_rcv_els_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
981 void *arg, uint32_t evt)
982 {
983 lpfc_issue_els_logo(vport, ndlp, 0);
984 return ndlp->nlp_state;
985 }
986
987 static uint32_t
988 lpfc_rcv_logo_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
989 void *arg, uint32_t evt)
990 {
991 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
992 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
993
994 spin_lock_irq(shost->host_lock);
995 ndlp->nlp_flag |= NLP_LOGO_ACC;
996 spin_unlock_irq(shost->host_lock);
997 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
998
999 return ndlp->nlp_state;
1000 }
1001
1002 static uint32_t
1003 lpfc_cmpl_logo_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1004 void *arg, uint32_t evt)
1005 {
1006 return NLP_STE_FREED_NODE;
1007 }
1008
1009 static uint32_t
1010 lpfc_device_rm_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1011 void *arg, uint32_t evt)
1012 {
1013 return NLP_STE_FREED_NODE;
1014 }
1015
1016 static uint32_t
1017 lpfc_device_recov_unused_node(struct lpfc_vport *vport,
1018 struct lpfc_nodelist *ndlp,
1019 void *arg, uint32_t evt)
1020 {
1021 return ndlp->nlp_state;
1022 }
1023
1024 static uint32_t
1025 lpfc_rcv_plogi_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1026 void *arg, uint32_t evt)
1027 {
1028 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1029 struct lpfc_hba *phba = vport->phba;
1030 struct lpfc_iocbq *cmdiocb = arg;
1031 struct lpfc_dmabuf *pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
1032 uint32_t *lp = (uint32_t *) pcmd->virt;
1033 struct serv_parm *sp = (struct serv_parm *) (lp + 1);
1034 struct ls_rjt stat;
1035 int port_cmp;
1036
1037 memset(&stat, 0, sizeof (struct ls_rjt));
1038
1039 /* For a PLOGI, we only accept if our portname is less
1040 * than the remote portname.
1041 */
1042 phba->fc_stat.elsLogiCol++;
1043 port_cmp = memcmp(&vport->fc_portname, &sp->portName,
1044 sizeof(struct lpfc_name));
1045
1046 if (port_cmp >= 0) {
1047 /* Reject this request because the remote node will accept
1048 ours */
1049 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
1050 stat.un.b.lsRjtRsnCodeExp = LSEXP_CMD_IN_PROGRESS;
1051 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
1052 NULL);
1053 } else {
1054 if (lpfc_rcv_plogi(vport, ndlp, cmdiocb) &&
1055 (ndlp->nlp_flag & NLP_NPR_2B_DISC) &&
1056 (vport->num_disc_nodes)) {
1057 spin_lock_irq(shost->host_lock);
1058 ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
1059 spin_unlock_irq(shost->host_lock);
1060 /* Check if there are more PLOGIs to be sent */
1061 lpfc_more_plogi(vport);
1062 if (vport->num_disc_nodes == 0) {
1063 spin_lock_irq(shost->host_lock);
1064 vport->fc_flag &= ~FC_NDISC_ACTIVE;
1065 spin_unlock_irq(shost->host_lock);
1066 lpfc_can_disctmo(vport);
1067 lpfc_end_rscn(vport);
1068 }
1069 }
1070 } /* If our portname was less */
1071
1072 return ndlp->nlp_state;
1073 }
1074
1075 static uint32_t
1076 lpfc_rcv_prli_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1077 void *arg, uint32_t evt)
1078 {
1079 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1080 struct ls_rjt stat;
1081
1082 memset(&stat, 0, sizeof (struct ls_rjt));
1083 stat.un.b.lsRjtRsnCode = LSRJT_LOGICAL_BSY;
1084 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
1085 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
1086 return ndlp->nlp_state;
1087 }
1088
1089 static uint32_t
1090 lpfc_rcv_logo_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1091 void *arg, uint32_t evt)
1092 {
1093 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1094
1095 /* Retrieve RPI from LOGO IOCB. RPI is used for CMD_ABORT_XRI_CN */
1096 if (vport->phba->sli_rev == LPFC_SLI_REV3)
1097 ndlp->nlp_rpi = cmdiocb->iocb.ulpIoTag;
1098 /* software abort outstanding PLOGI */
1099 lpfc_els_abort(vport->phba, ndlp);
1100
1101 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1102 return ndlp->nlp_state;
1103 }
1104
1105 static uint32_t
1106 lpfc_rcv_els_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1107 void *arg, uint32_t evt)
1108 {
1109 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1110 struct lpfc_hba *phba = vport->phba;
1111 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1112
1113 /* software abort outstanding PLOGI */
1114 lpfc_els_abort(phba, ndlp);
1115
1116 if (evt == NLP_EVT_RCV_LOGO) {
1117 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
1118 } else {
1119 lpfc_issue_els_logo(vport, ndlp, 0);
1120 }
1121
1122 /* Put ndlp in npr state set plogi timer for 1 sec */
1123 mod_timer(&ndlp->nlp_delayfunc, jiffies + msecs_to_jiffies(1000 * 1));
1124 spin_lock_irq(shost->host_lock);
1125 ndlp->nlp_flag |= NLP_DELAY_TMO;
1126 spin_unlock_irq(shost->host_lock);
1127 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
1128 ndlp->nlp_prev_state = NLP_STE_PLOGI_ISSUE;
1129 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1130
1131 return ndlp->nlp_state;
1132 }
1133
1134 static uint32_t
1135 lpfc_cmpl_plogi_plogi_issue(struct lpfc_vport *vport,
1136 struct lpfc_nodelist *ndlp,
1137 void *arg,
1138 uint32_t evt)
1139 {
1140 struct lpfc_hba *phba = vport->phba;
1141 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1142 struct lpfc_iocbq *cmdiocb, *rspiocb;
1143 struct lpfc_dmabuf *pcmd, *prsp, *mp;
1144 uint32_t *lp;
1145 uint32_t vid, flag;
1146 IOCB_t *irsp;
1147 struct serv_parm *sp;
1148 uint32_t ed_tov;
1149 LPFC_MBOXQ_t *mbox;
1150 int rc;
1151
1152 cmdiocb = (struct lpfc_iocbq *) arg;
1153 rspiocb = cmdiocb->context_un.rsp_iocb;
1154
1155 if (ndlp->nlp_flag & NLP_ACC_REGLOGIN) {
1156 /* Recovery from PLOGI collision logic */
1157 return ndlp->nlp_state;
1158 }
1159
1160 irsp = &rspiocb->iocb;
1161
1162 if (irsp->ulpStatus)
1163 goto out;
1164
1165 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
1166
1167 prsp = list_get_first(&pcmd->list, struct lpfc_dmabuf, list);
1168 if (!prsp)
1169 goto out;
1170
1171 lp = (uint32_t *) prsp->virt;
1172 sp = (struct serv_parm *) ((uint8_t *) lp + sizeof (uint32_t));
1173
1174 /* Some switches have FDMI servers returning 0 for WWN */
1175 if ((ndlp->nlp_DID != FDMI_DID) &&
1176 (wwn_to_u64(sp->portName.u.wwn) == 0 ||
1177 wwn_to_u64(sp->nodeName.u.wwn) == 0)) {
1178 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
1179 "0142 PLOGI RSP: Invalid WWN.\n");
1180 goto out;
1181 }
1182 if (!lpfc_check_sparm(vport, ndlp, sp, CLASS3, 0))
1183 goto out;
1184 /* PLOGI chkparm OK */
1185 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
1186 "0121 PLOGI chkparm OK Data: x%x x%x x%x x%x\n",
1187 ndlp->nlp_DID, ndlp->nlp_state,
1188 ndlp->nlp_flag, ndlp->nlp_rpi);
1189 if (vport->cfg_fcp_class == 2 && (sp->cls2.classValid))
1190 ndlp->nlp_fcp_info |= CLASS2;
1191 else
1192 ndlp->nlp_fcp_info |= CLASS3;
1193
1194 ndlp->nlp_class_sup = 0;
1195 if (sp->cls1.classValid)
1196 ndlp->nlp_class_sup |= FC_COS_CLASS1;
1197 if (sp->cls2.classValid)
1198 ndlp->nlp_class_sup |= FC_COS_CLASS2;
1199 if (sp->cls3.classValid)
1200 ndlp->nlp_class_sup |= FC_COS_CLASS3;
1201 if (sp->cls4.classValid)
1202 ndlp->nlp_class_sup |= FC_COS_CLASS4;
1203 ndlp->nlp_maxframe =
1204 ((sp->cmn.bbRcvSizeMsb & 0x0F) << 8) | sp->cmn.bbRcvSizeLsb;
1205
1206 if ((vport->fc_flag & FC_PT2PT) &&
1207 (vport->fc_flag & FC_PT2PT_PLOGI)) {
1208 ed_tov = be32_to_cpu(sp->cmn.e_d_tov);
1209 if (sp->cmn.edtovResolution) {
1210 /* E_D_TOV ticks are in nanoseconds */
1211 ed_tov = (phba->fc_edtov + 999999) / 1000000;
1212 }
1213
1214 ndlp->nlp_flag &= ~NLP_SUPPRESS_RSP;
1215 if ((phba->sli.sli_flag & LPFC_SLI_SUPPRESS_RSP) &&
1216 sp->cmn.valid_vendor_ver_level) {
1217 vid = be32_to_cpu(sp->un.vv.vid);
1218 flag = be32_to_cpu(sp->un.vv.flags);
1219 if ((vid == LPFC_VV_EMLX_ID) &&
1220 (flag & LPFC_VV_SUPPRESS_RSP))
1221 ndlp->nlp_flag |= NLP_SUPPRESS_RSP;
1222 }
1223
1224 /*
1225 * Use the larger EDTOV
1226 * RATOV = 2 * EDTOV for pt-to-pt
1227 */
1228 if (ed_tov > phba->fc_edtov)
1229 phba->fc_edtov = ed_tov;
1230 phba->fc_ratov = (2 * phba->fc_edtov) / 1000;
1231
1232 memcpy(&phba->fc_fabparam, sp, sizeof(struct serv_parm));
1233
1234 /* Issue config_link / reg_vfi to account for updated TOV's */
1235 if (phba->sli_rev == LPFC_SLI_REV4) {
1236 lpfc_issue_reg_vfi(vport);
1237 } else {
1238 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1239 if (!mbox) {
1240 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
1241 "0133 PLOGI: no memory "
1242 "for config_link "
1243 "Data: x%x x%x x%x x%x\n",
1244 ndlp->nlp_DID, ndlp->nlp_state,
1245 ndlp->nlp_flag, ndlp->nlp_rpi);
1246 goto out;
1247 }
1248
1249 lpfc_config_link(phba, mbox);
1250
1251 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
1252 mbox->vport = vport;
1253 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
1254 if (rc == MBX_NOT_FINISHED) {
1255 mempool_free(mbox, phba->mbox_mem_pool);
1256 goto out;
1257 }
1258 }
1259 }
1260
1261 lpfc_unreg_rpi(vport, ndlp);
1262
1263 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1264 if (!mbox) {
1265 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
1266 "0018 PLOGI: no memory for reg_login "
1267 "Data: x%x x%x x%x x%x\n",
1268 ndlp->nlp_DID, ndlp->nlp_state,
1269 ndlp->nlp_flag, ndlp->nlp_rpi);
1270 goto out;
1271 }
1272
1273 if (lpfc_reg_rpi(phba, vport->vpi, irsp->un.elsreq64.remoteID,
1274 (uint8_t *) sp, mbox, ndlp->nlp_rpi) == 0) {
1275 switch (ndlp->nlp_DID) {
1276 case NameServer_DID:
1277 mbox->mbox_cmpl = lpfc_mbx_cmpl_ns_reg_login;
1278 break;
1279 case FDMI_DID:
1280 mbox->mbox_cmpl = lpfc_mbx_cmpl_fdmi_reg_login;
1281 break;
1282 default:
1283 ndlp->nlp_flag |= NLP_REG_LOGIN_SEND;
1284 mbox->mbox_cmpl = lpfc_mbx_cmpl_reg_login;
1285 }
1286 mbox->ctx_ndlp = lpfc_nlp_get(ndlp);
1287 mbox->vport = vport;
1288 if (lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT)
1289 != MBX_NOT_FINISHED) {
1290 lpfc_nlp_set_state(vport, ndlp,
1291 NLP_STE_REG_LOGIN_ISSUE);
1292 return ndlp->nlp_state;
1293 }
1294 if (ndlp->nlp_flag & NLP_REG_LOGIN_SEND)
1295 ndlp->nlp_flag &= ~NLP_REG_LOGIN_SEND;
1296 /* decrement node reference count to the failed mbox
1297 * command
1298 */
1299 lpfc_nlp_put(ndlp);
1300 mp = (struct lpfc_dmabuf *)mbox->ctx_buf;
1301 lpfc_mbuf_free(phba, mp->virt, mp->phys);
1302 kfree(mp);
1303 mempool_free(mbox, phba->mbox_mem_pool);
1304
1305 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
1306 "0134 PLOGI: cannot issue reg_login "
1307 "Data: x%x x%x x%x x%x\n",
1308 ndlp->nlp_DID, ndlp->nlp_state,
1309 ndlp->nlp_flag, ndlp->nlp_rpi);
1310 } else {
1311 mempool_free(mbox, phba->mbox_mem_pool);
1312
1313 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
1314 "0135 PLOGI: cannot format reg_login "
1315 "Data: x%x x%x x%x x%x\n",
1316 ndlp->nlp_DID, ndlp->nlp_state,
1317 ndlp->nlp_flag, ndlp->nlp_rpi);
1318 }
1319
1320
1321 out:
1322 if (ndlp->nlp_DID == NameServer_DID) {
1323 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
1324 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
1325 "0261 Cannot Register NameServer login\n");
1326 }
1327
1328 /*
1329 ** In case the node reference counter does not go to zero, ensure that
1330 ** the stale state for the node is not processed.
1331 */
1332
1333 ndlp->nlp_prev_state = ndlp->nlp_state;
1334 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1335 spin_lock_irq(shost->host_lock);
1336 ndlp->nlp_flag |= NLP_DEFER_RM;
1337 spin_unlock_irq(shost->host_lock);
1338 return NLP_STE_FREED_NODE;
1339 }
1340
1341 static uint32_t
1342 lpfc_cmpl_logo_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1343 void *arg, uint32_t evt)
1344 {
1345 return ndlp->nlp_state;
1346 }
1347
1348 static uint32_t
1349 lpfc_cmpl_reglogin_plogi_issue(struct lpfc_vport *vport,
1350 struct lpfc_nodelist *ndlp, void *arg, uint32_t evt)
1351 {
1352 struct lpfc_hba *phba;
1353 LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg;
1354 MAILBOX_t *mb = &pmb->u.mb;
1355 uint16_t rpi;
1356
1357 phba = vport->phba;
1358 /* Release the RPI */
1359 if (!(phba->pport->load_flag & FC_UNLOADING) &&
1360 !mb->mbxStatus) {
1361 rpi = pmb->u.mb.un.varWords[0];
1362 lpfc_release_rpi(phba, vport, ndlp, rpi);
1363 }
1364 return ndlp->nlp_state;
1365 }
1366
1367 static uint32_t
1368 lpfc_device_rm_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1369 void *arg, uint32_t evt)
1370 {
1371 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1372
1373 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1374 spin_lock_irq(shost->host_lock);
1375 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1376 spin_unlock_irq(shost->host_lock);
1377 return ndlp->nlp_state;
1378 } else {
1379 /* software abort outstanding PLOGI */
1380 lpfc_els_abort(vport->phba, ndlp);
1381
1382 lpfc_drop_node(vport, ndlp);
1383 return NLP_STE_FREED_NODE;
1384 }
1385 }
1386
1387 static uint32_t
1388 lpfc_device_recov_plogi_issue(struct lpfc_vport *vport,
1389 struct lpfc_nodelist *ndlp,
1390 void *arg,
1391 uint32_t evt)
1392 {
1393 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1394 struct lpfc_hba *phba = vport->phba;
1395
1396 /* Don't do anything that will mess up processing of the
1397 * previous RSCN.
1398 */
1399 if (vport->fc_flag & FC_RSCN_DEFERRED)
1400 return ndlp->nlp_state;
1401
1402 /* software abort outstanding PLOGI */
1403 lpfc_els_abort(phba, ndlp);
1404
1405 ndlp->nlp_prev_state = NLP_STE_PLOGI_ISSUE;
1406 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1407 spin_lock_irq(shost->host_lock);
1408 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1409 spin_unlock_irq(shost->host_lock);
1410
1411 return ndlp->nlp_state;
1412 }
1413
1414 static uint32_t
1415 lpfc_rcv_plogi_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1416 void *arg, uint32_t evt)
1417 {
1418 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1419 struct lpfc_hba *phba = vport->phba;
1420 struct lpfc_iocbq *cmdiocb;
1421
1422 /* software abort outstanding ADISC */
1423 lpfc_els_abort(phba, ndlp);
1424
1425 cmdiocb = (struct lpfc_iocbq *) arg;
1426
1427 if (lpfc_rcv_plogi(vport, ndlp, cmdiocb)) {
1428 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1429 spin_lock_irq(shost->host_lock);
1430 ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
1431 spin_unlock_irq(shost->host_lock);
1432 if (vport->num_disc_nodes)
1433 lpfc_more_adisc(vport);
1434 }
1435 return ndlp->nlp_state;
1436 }
1437 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1438 lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
1439 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
1440
1441 return ndlp->nlp_state;
1442 }
1443
1444 static uint32_t
1445 lpfc_rcv_prli_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1446 void *arg, uint32_t evt)
1447 {
1448 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1449
1450 if (lpfc_rcv_prli_support_check(vport, ndlp, cmdiocb))
1451 lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1452 return ndlp->nlp_state;
1453 }
1454
1455 static uint32_t
1456 lpfc_rcv_logo_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1457 void *arg, uint32_t evt)
1458 {
1459 struct lpfc_hba *phba = vport->phba;
1460 struct lpfc_iocbq *cmdiocb;
1461
1462 cmdiocb = (struct lpfc_iocbq *) arg;
1463
1464 /* software abort outstanding ADISC */
1465 lpfc_els_abort(phba, ndlp);
1466
1467 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1468 return ndlp->nlp_state;
1469 }
1470
1471 static uint32_t
1472 lpfc_rcv_padisc_adisc_issue(struct lpfc_vport *vport,
1473 struct lpfc_nodelist *ndlp,
1474 void *arg, uint32_t evt)
1475 {
1476 struct lpfc_iocbq *cmdiocb;
1477
1478 cmdiocb = (struct lpfc_iocbq *) arg;
1479
1480 lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1481 return ndlp->nlp_state;
1482 }
1483
1484 static uint32_t
1485 lpfc_rcv_prlo_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1486 void *arg, uint32_t evt)
1487 {
1488 struct lpfc_iocbq *cmdiocb;
1489
1490 cmdiocb = (struct lpfc_iocbq *) arg;
1491
1492 /* Treat like rcv logo */
1493 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_PRLO);
1494 return ndlp->nlp_state;
1495 }
1496
1497 static uint32_t
1498 lpfc_cmpl_adisc_adisc_issue(struct lpfc_vport *vport,
1499 struct lpfc_nodelist *ndlp,
1500 void *arg, uint32_t evt)
1501 {
1502 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1503 struct lpfc_hba *phba = vport->phba;
1504 struct lpfc_iocbq *cmdiocb, *rspiocb;
1505 IOCB_t *irsp;
1506 ADISC *ap;
1507 int rc;
1508
1509 cmdiocb = (struct lpfc_iocbq *) arg;
1510 rspiocb = cmdiocb->context_un.rsp_iocb;
1511
1512 ap = (ADISC *)lpfc_check_elscmpl_iocb(phba, cmdiocb, rspiocb);
1513 irsp = &rspiocb->iocb;
1514
1515 if ((irsp->ulpStatus) ||
1516 (!lpfc_check_adisc(vport, ndlp, &ap->nodeName, &ap->portName))) {
1517 /* 1 sec timeout */
1518 mod_timer(&ndlp->nlp_delayfunc,
1519 jiffies + msecs_to_jiffies(1000));
1520 spin_lock_irq(shost->host_lock);
1521 ndlp->nlp_flag |= NLP_DELAY_TMO;
1522 spin_unlock_irq(shost->host_lock);
1523 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
1524
1525 memset(&ndlp->nlp_nodename, 0, sizeof(struct lpfc_name));
1526 memset(&ndlp->nlp_portname, 0, sizeof(struct lpfc_name));
1527
1528 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1529 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1530 lpfc_unreg_rpi(vport, ndlp);
1531 return ndlp->nlp_state;
1532 }
1533
1534 if (phba->sli_rev == LPFC_SLI_REV4) {
1535 rc = lpfc_sli4_resume_rpi(ndlp, NULL, NULL);
1536 if (rc) {
1537 /* Stay in state and retry. */
1538 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1539 return ndlp->nlp_state;
1540 }
1541 }
1542
1543 if (ndlp->nlp_type & NLP_FCP_TARGET) {
1544 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1545 lpfc_nlp_set_state(vport, ndlp, NLP_STE_MAPPED_NODE);
1546 } else {
1547 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1548 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1549 }
1550
1551 return ndlp->nlp_state;
1552 }
1553
1554 static uint32_t
1555 lpfc_device_rm_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1556 void *arg, uint32_t evt)
1557 {
1558 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1559
1560 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1561 spin_lock_irq(shost->host_lock);
1562 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1563 spin_unlock_irq(shost->host_lock);
1564 return ndlp->nlp_state;
1565 } else {
1566 /* software abort outstanding ADISC */
1567 lpfc_els_abort(vport->phba, ndlp);
1568
1569 lpfc_drop_node(vport, ndlp);
1570 return NLP_STE_FREED_NODE;
1571 }
1572 }
1573
1574 static uint32_t
1575 lpfc_device_recov_adisc_issue(struct lpfc_vport *vport,
1576 struct lpfc_nodelist *ndlp,
1577 void *arg,
1578 uint32_t evt)
1579 {
1580 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1581 struct lpfc_hba *phba = vport->phba;
1582
1583 /* Don't do anything that will mess up processing of the
1584 * previous RSCN.
1585 */
1586 if (vport->fc_flag & FC_RSCN_DEFERRED)
1587 return ndlp->nlp_state;
1588
1589 /* software abort outstanding ADISC */
1590 lpfc_els_abort(phba, ndlp);
1591
1592 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1593 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1594 spin_lock_irq(shost->host_lock);
1595 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1596 spin_unlock_irq(shost->host_lock);
1597 lpfc_disc_set_adisc(vport, ndlp);
1598 return ndlp->nlp_state;
1599 }
1600
1601 static uint32_t
1602 lpfc_rcv_plogi_reglogin_issue(struct lpfc_vport *vport,
1603 struct lpfc_nodelist *ndlp,
1604 void *arg,
1605 uint32_t evt)
1606 {
1607 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1608
1609 lpfc_rcv_plogi(vport, ndlp, cmdiocb);
1610 return ndlp->nlp_state;
1611 }
1612
1613 static uint32_t
1614 lpfc_rcv_prli_reglogin_issue(struct lpfc_vport *vport,
1615 struct lpfc_nodelist *ndlp,
1616 void *arg,
1617 uint32_t evt)
1618 {
1619 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1620 struct ls_rjt stat;
1621
1622 if (!lpfc_rcv_prli_support_check(vport, ndlp, cmdiocb)) {
1623 return ndlp->nlp_state;
1624 }
1625 if (vport->phba->nvmet_support) {
1626 /* NVME Target mode. Handle and respond to the PRLI and
1627 * transition to UNMAPPED provided the RPI has completed
1628 * registration.
1629 */
1630 if (ndlp->nlp_flag & NLP_RPI_REGISTERED) {
1631 lpfc_rcv_prli(vport, ndlp, cmdiocb);
1632 lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1633 } else {
1634 /* RPI registration has not completed. Reject the PRLI
1635 * to prevent an illegal state transition when the
1636 * rpi registration does complete.
1637 */
1638 memset(&stat, 0, sizeof(struct ls_rjt));
1639 stat.un.b.lsRjtRsnCode = LSRJT_LOGICAL_BSY;
1640 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
1641 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb,
1642 ndlp, NULL);
1643 return ndlp->nlp_state;
1644 }
1645 } else {
1646 /* Initiator mode. */
1647 lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1648 }
1649 return ndlp->nlp_state;
1650 }
1651
1652 static uint32_t
1653 lpfc_rcv_logo_reglogin_issue(struct lpfc_vport *vport,
1654 struct lpfc_nodelist *ndlp,
1655 void *arg,
1656 uint32_t evt)
1657 {
1658 struct lpfc_hba *phba = vport->phba;
1659 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1660 LPFC_MBOXQ_t *mb;
1661 LPFC_MBOXQ_t *nextmb;
1662 struct lpfc_dmabuf *mp;
1663
1664 cmdiocb = (struct lpfc_iocbq *) arg;
1665
1666 /* cleanup any ndlp on mbox q waiting for reglogin cmpl */
1667 if ((mb = phba->sli.mbox_active)) {
1668 if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) &&
1669 (ndlp == (struct lpfc_nodelist *)mb->ctx_ndlp)) {
1670 ndlp->nlp_flag &= ~NLP_REG_LOGIN_SEND;
1671 lpfc_nlp_put(ndlp);
1672 mb->ctx_ndlp = NULL;
1673 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
1674 }
1675 }
1676
1677 spin_lock_irq(&phba->hbalock);
1678 list_for_each_entry_safe(mb, nextmb, &phba->sli.mboxq, list) {
1679 if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) &&
1680 (ndlp == (struct lpfc_nodelist *)mb->ctx_ndlp)) {
1681 mp = (struct lpfc_dmabuf *)(mb->ctx_buf);
1682 if (mp) {
1683 __lpfc_mbuf_free(phba, mp->virt, mp->phys);
1684 kfree(mp);
1685 }
1686 ndlp->nlp_flag &= ~NLP_REG_LOGIN_SEND;
1687 lpfc_nlp_put(ndlp);
1688 list_del(&mb->list);
1689 phba->sli.mboxq_cnt--;
1690 mempool_free(mb, phba->mbox_mem_pool);
1691 }
1692 }
1693 spin_unlock_irq(&phba->hbalock);
1694
1695 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1696 return ndlp->nlp_state;
1697 }
1698
1699 static uint32_t
1700 lpfc_rcv_padisc_reglogin_issue(struct lpfc_vport *vport,
1701 struct lpfc_nodelist *ndlp,
1702 void *arg,
1703 uint32_t evt)
1704 {
1705 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1706
1707 lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1708 return ndlp->nlp_state;
1709 }
1710
1711 static uint32_t
1712 lpfc_rcv_prlo_reglogin_issue(struct lpfc_vport *vport,
1713 struct lpfc_nodelist *ndlp,
1714 void *arg,
1715 uint32_t evt)
1716 {
1717 struct lpfc_iocbq *cmdiocb;
1718
1719 cmdiocb = (struct lpfc_iocbq *) arg;
1720 lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
1721 return ndlp->nlp_state;
1722 }
1723
1724 static uint32_t
1725 lpfc_cmpl_reglogin_reglogin_issue(struct lpfc_vport *vport,
1726 struct lpfc_nodelist *ndlp,
1727 void *arg,
1728 uint32_t evt)
1729 {
1730 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1731 struct lpfc_hba *phba = vport->phba;
1732 LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg;
1733 MAILBOX_t *mb = &pmb->u.mb;
1734 uint32_t did = mb->un.varWords[1];
1735 int rc = 0;
1736
1737 if (mb->mbxStatus) {
1738 /* RegLogin failed */
1739 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
1740 "0246 RegLogin failed Data: x%x x%x x%x x%x "
1741 "x%x\n",
1742 did, mb->mbxStatus, vport->port_state,
1743 mb->un.varRegLogin.vpi,
1744 mb->un.varRegLogin.rpi);
1745 /*
1746 * If RegLogin failed due to lack of HBA resources do not
1747 * retry discovery.
1748 */
1749 if (mb->mbxStatus == MBXERR_RPI_FULL) {
1750 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1751 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1752 return ndlp->nlp_state;
1753 }
1754
1755 /* Put ndlp in npr state set plogi timer for 1 sec */
1756 mod_timer(&ndlp->nlp_delayfunc,
1757 jiffies + msecs_to_jiffies(1000 * 1));
1758 spin_lock_irq(shost->host_lock);
1759 ndlp->nlp_flag |= NLP_DELAY_TMO;
1760 spin_unlock_irq(shost->host_lock);
1761 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
1762
1763 lpfc_issue_els_logo(vport, ndlp, 0);
1764 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1765 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1766 return ndlp->nlp_state;
1767 }
1768
1769 /* SLI4 ports have preallocated logical rpis. */
1770 if (phba->sli_rev < LPFC_SLI_REV4)
1771 ndlp->nlp_rpi = mb->un.varWords[0];
1772
1773 ndlp->nlp_flag |= NLP_RPI_REGISTERED;
1774
1775 /* Only if we are not a fabric nport do we issue PRLI */
1776 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
1777 "3066 RegLogin Complete on x%x x%x x%x\n",
1778 did, ndlp->nlp_type, ndlp->nlp_fc4_type);
1779 if (!(ndlp->nlp_type & NLP_FABRIC) &&
1780 (phba->nvmet_support == 0)) {
1781 /* The driver supports FCP and NVME concurrently. If the
1782 * ndlp's nlp_fc4_type is still zero, the driver doesn't
1783 * know what PRLI to send yet. Figure that out now and
1784 * call PRLI depending on the outcome.
1785 */
1786 if (vport->fc_flag & FC_PT2PT) {
1787 /* If we are pt2pt, there is no Fabric to determine
1788 * the FC4 type of the remote nport. So if NVME
1789 * is configured try it.
1790 */
1791 ndlp->nlp_fc4_type |= NLP_FC4_FCP;
1792 if ((phba->cfg_enable_fc4_type == LPFC_ENABLE_BOTH) ||
1793 (phba->cfg_enable_fc4_type == LPFC_ENABLE_NVME)) {
1794 ndlp->nlp_fc4_type |= NLP_FC4_NVME;
1795 /* We need to update the localport also */
1796 lpfc_nvme_update_localport(vport);
1797 }
1798
1799 } else if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
1800 ndlp->nlp_fc4_type |= NLP_FC4_FCP;
1801
1802 } else if (ndlp->nlp_fc4_type == 0) {
1803 /* If we are only configured for FCP, the driver
1804 * should just issue PRLI for FCP. Otherwise issue
1805 * GFT_ID to determine if remote port supports NVME.
1806 */
1807 if (phba->cfg_enable_fc4_type != LPFC_ENABLE_FCP) {
1808 rc = lpfc_ns_cmd(vport, SLI_CTNS_GFT_ID,
1809 0, ndlp->nlp_DID);
1810 return ndlp->nlp_state;
1811 }
1812 ndlp->nlp_fc4_type = NLP_FC4_FCP;
1813 }
1814
1815 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1816 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PRLI_ISSUE);
1817 lpfc_issue_els_prli(vport, ndlp, 0);
1818 } else {
1819 if ((vport->fc_flag & FC_PT2PT) && phba->nvmet_support)
1820 phba->targetport->port_id = vport->fc_myDID;
1821
1822 /* Only Fabric ports should transition. NVME target
1823 * must complete PRLI.
1824 */
1825 if (ndlp->nlp_type & NLP_FABRIC) {
1826 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1827 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1828 }
1829 }
1830 return ndlp->nlp_state;
1831 }
1832
1833 static uint32_t
1834 lpfc_device_rm_reglogin_issue(struct lpfc_vport *vport,
1835 struct lpfc_nodelist *ndlp,
1836 void *arg,
1837 uint32_t evt)
1838 {
1839 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1840
1841 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1842 spin_lock_irq(shost->host_lock);
1843 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1844 spin_unlock_irq(shost->host_lock);
1845 return ndlp->nlp_state;
1846 } else {
1847 lpfc_drop_node(vport, ndlp);
1848 return NLP_STE_FREED_NODE;
1849 }
1850 }
1851
1852 static uint32_t
1853 lpfc_device_recov_reglogin_issue(struct lpfc_vport *vport,
1854 struct lpfc_nodelist *ndlp,
1855 void *arg,
1856 uint32_t evt)
1857 {
1858 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1859
1860 /* Don't do anything that will mess up processing of the
1861 * previous RSCN.
1862 */
1863 if (vport->fc_flag & FC_RSCN_DEFERRED)
1864 return ndlp->nlp_state;
1865
1866 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1867 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1868 spin_lock_irq(shost->host_lock);
1869
1870 /* If we are a target we won't immediately transition into PRLI,
1871 * so if REG_LOGIN already completed we don't need to ignore it.
1872 */
1873 if (!(ndlp->nlp_flag & NLP_RPI_REGISTERED) ||
1874 !vport->phba->nvmet_support)
1875 ndlp->nlp_flag |= NLP_IGNR_REG_CMPL;
1876
1877 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1878 spin_unlock_irq(shost->host_lock);
1879 lpfc_disc_set_adisc(vport, ndlp);
1880 return ndlp->nlp_state;
1881 }
1882
1883 static uint32_t
1884 lpfc_rcv_plogi_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1885 void *arg, uint32_t evt)
1886 {
1887 struct lpfc_iocbq *cmdiocb;
1888
1889 cmdiocb = (struct lpfc_iocbq *) arg;
1890
1891 lpfc_rcv_plogi(vport, ndlp, cmdiocb);
1892 return ndlp->nlp_state;
1893 }
1894
1895 static uint32_t
1896 lpfc_rcv_prli_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 if (!lpfc_rcv_prli_support_check(vport, ndlp, cmdiocb))
1902 return ndlp->nlp_state;
1903 lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1904 return ndlp->nlp_state;
1905 }
1906
1907 static uint32_t
1908 lpfc_rcv_logo_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1909 void *arg, uint32_t evt)
1910 {
1911 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1912
1913 /* Software abort outstanding PRLI before sending acc */
1914 lpfc_els_abort(vport->phba, ndlp);
1915
1916 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1917 return ndlp->nlp_state;
1918 }
1919
1920 static uint32_t
1921 lpfc_rcv_padisc_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1922 void *arg, uint32_t evt)
1923 {
1924 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1925
1926 lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1927 return ndlp->nlp_state;
1928 }
1929
1930 /* This routine is envoked when we rcv a PRLO request from a nport
1931 * we are logged into. We should send back a PRLO rsp setting the
1932 * appropriate bits.
1933 * NEXT STATE = PRLI_ISSUE
1934 */
1935 static uint32_t
1936 lpfc_rcv_prlo_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1937 void *arg, uint32_t evt)
1938 {
1939 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1940
1941 lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
1942 return ndlp->nlp_state;
1943 }
1944
1945 static uint32_t
1946 lpfc_cmpl_prli_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1947 void *arg, uint32_t evt)
1948 {
1949 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1950 struct lpfc_iocbq *cmdiocb, *rspiocb;
1951 struct lpfc_hba *phba = vport->phba;
1952 IOCB_t *irsp;
1953 PRLI *npr;
1954 struct lpfc_nvme_prli *nvpr;
1955 void *temp_ptr;
1956
1957 cmdiocb = (struct lpfc_iocbq *) arg;
1958 rspiocb = cmdiocb->context_un.rsp_iocb;
1959
1960 /* A solicited PRLI is either FCP or NVME. The PRLI cmd/rsp
1961 * format is different so NULL the two PRLI types so that the
1962 * driver correctly gets the correct context.
1963 */
1964 npr = NULL;
1965 nvpr = NULL;
1966 temp_ptr = lpfc_check_elscmpl_iocb(phba, cmdiocb, rspiocb);
1967 if (cmdiocb->iocb_flag & LPFC_PRLI_FCP_REQ)
1968 npr = (PRLI *) temp_ptr;
1969 else if (cmdiocb->iocb_flag & LPFC_PRLI_NVME_REQ)
1970 nvpr = (struct lpfc_nvme_prli *) temp_ptr;
1971
1972 irsp = &rspiocb->iocb;
1973 if (irsp->ulpStatus) {
1974 if ((vport->port_type == LPFC_NPIV_PORT) &&
1975 vport->cfg_restrict_login) {
1976 goto out;
1977 }
1978
1979 /* Adjust the nlp_type accordingly if the PRLI failed */
1980 if (npr)
1981 ndlp->nlp_fc4_type &= ~NLP_FC4_FCP;
1982 if (nvpr)
1983 ndlp->nlp_fc4_type &= ~NLP_FC4_NVME;
1984
1985 /* We can't set the DSM state till BOTH PRLIs complete */
1986 goto out_err;
1987 }
1988
1989 if (npr && (npr->acceptRspCode == PRLI_REQ_EXECUTED) &&
1990 (npr->prliType == PRLI_FCP_TYPE)) {
1991 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_DISC,
1992 "6028 FCP NPR PRLI Cmpl Init %d Target %d\n",
1993 npr->initiatorFunc,
1994 npr->targetFunc);
1995 if (npr->initiatorFunc)
1996 ndlp->nlp_type |= NLP_FCP_INITIATOR;
1997 if (npr->targetFunc) {
1998 ndlp->nlp_type |= NLP_FCP_TARGET;
1999 if (npr->writeXferRdyDis)
2000 ndlp->nlp_flag |= NLP_FIRSTBURST;
2001 }
2002 if (npr->Retry)
2003 ndlp->nlp_fcp_info |= NLP_FCP_2_DEVICE;
2004
2005 } else if (nvpr &&
2006 (bf_get_be32(prli_acc_rsp_code, nvpr) ==
2007 PRLI_REQ_EXECUTED) &&
2008 (bf_get_be32(prli_type_code, nvpr) ==
2009 PRLI_NVME_TYPE)) {
2010
2011 /* Complete setting up the remote ndlp personality. */
2012 if (bf_get_be32(prli_init, nvpr))
2013 ndlp->nlp_type |= NLP_NVME_INITIATOR;
2014
2015 /* Target driver cannot solicit NVME FB. */
2016 if (bf_get_be32(prli_tgt, nvpr)) {
2017 /* Complete the nvme target roles. The transport
2018 * needs to know if the rport is capable of
2019 * discovery in addition to its role.
2020 */
2021 ndlp->nlp_type |= NLP_NVME_TARGET;
2022 if (bf_get_be32(prli_disc, nvpr))
2023 ndlp->nlp_type |= NLP_NVME_DISCOVERY;
2024
2025 /*
2026 * If prli_fba is set, the Target supports FirstBurst.
2027 * If prli_fb_sz is 0, the FirstBurst size is unlimited,
2028 * otherwise it defines the actual size supported by
2029 * the NVME Target.
2030 */
2031 if ((bf_get_be32(prli_fba, nvpr) == 1) &&
2032 (phba->cfg_nvme_enable_fb) &&
2033 (!phba->nvmet_support)) {
2034 /* Both sides support FB. The target's first
2035 * burst size is a 512 byte encoded value.
2036 */
2037 ndlp->nlp_flag |= NLP_FIRSTBURST;
2038 ndlp->nvme_fb_size = bf_get_be32(prli_fb_sz,
2039 nvpr);
2040
2041 /* Expressed in units of 512 bytes */
2042 if (ndlp->nvme_fb_size)
2043 ndlp->nvme_fb_size <<=
2044 LPFC_NVME_FB_SHIFT;
2045 else
2046 ndlp->nvme_fb_size = LPFC_NVME_MAX_FB;
2047 }
2048 }
2049
2050 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_DISC,
2051 "6029 NVME PRLI Cmpl w1 x%08x "
2052 "w4 x%08x w5 x%08x flag x%x, "
2053 "fcp_info x%x nlp_type x%x\n",
2054 be32_to_cpu(nvpr->word1),
2055 be32_to_cpu(nvpr->word4),
2056 be32_to_cpu(nvpr->word5),
2057 ndlp->nlp_flag, ndlp->nlp_fcp_info,
2058 ndlp->nlp_type);
2059 }
2060 if (!(ndlp->nlp_type & NLP_FCP_TARGET) &&
2061 (vport->port_type == LPFC_NPIV_PORT) &&
2062 vport->cfg_restrict_login) {
2063 out:
2064 spin_lock_irq(shost->host_lock);
2065 ndlp->nlp_flag |= NLP_TARGET_REMOVE;
2066 spin_unlock_irq(shost->host_lock);
2067 lpfc_issue_els_logo(vport, ndlp, 0);
2068
2069 ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
2070 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
2071 return ndlp->nlp_state;
2072 }
2073
2074 out_err:
2075 /* The ndlp state cannot move to MAPPED or UNMAPPED before all PRLIs
2076 * are complete.
2077 */
2078 if (ndlp->fc4_prli_sent == 0) {
2079 ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
2080 if (ndlp->nlp_type & (NLP_FCP_TARGET | NLP_NVME_TARGET))
2081 lpfc_nlp_set_state(vport, ndlp, NLP_STE_MAPPED_NODE);
2082 else if (ndlp->nlp_type &
2083 (NLP_FCP_INITIATOR | NLP_NVME_INITIATOR))
2084 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
2085 } else
2086 lpfc_printf_vlog(vport,
2087 KERN_INFO, LOG_ELS,
2088 "3067 PRLI's still outstanding "
2089 "on x%06x - count %d, Pend Node Mode "
2090 "transition...\n",
2091 ndlp->nlp_DID, ndlp->fc4_prli_sent);
2092
2093 return ndlp->nlp_state;
2094 }
2095
2096 /*! lpfc_device_rm_prli_issue
2097 *
2098 * \pre
2099 * \post
2100 * \param phba
2101 * \param ndlp
2102 * \param arg
2103 * \param evt
2104 * \return uint32_t
2105 *
2106 * \b Description:
2107 * This routine is envoked when we a request to remove a nport we are in the
2108 * process of PRLIing. We should software abort outstanding prli, unreg
2109 * login, send a logout. We will change node state to UNUSED_NODE, put it
2110 * on plogi list so it can be freed when LOGO completes.
2111 *
2112 */
2113
2114 static uint32_t
2115 lpfc_device_rm_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2116 void *arg, uint32_t evt)
2117 {
2118 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2119
2120 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
2121 spin_lock_irq(shost->host_lock);
2122 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
2123 spin_unlock_irq(shost->host_lock);
2124 return ndlp->nlp_state;
2125 } else {
2126 /* software abort outstanding PLOGI */
2127 lpfc_els_abort(vport->phba, ndlp);
2128
2129 lpfc_drop_node(vport, ndlp);
2130 return NLP_STE_FREED_NODE;
2131 }
2132 }
2133
2134
2135 /*! lpfc_device_recov_prli_issue
2136 *
2137 * \pre
2138 * \post
2139 * \param phba
2140 * \param ndlp
2141 * \param arg
2142 * \param evt
2143 * \return uint32_t
2144 *
2145 * \b Description:
2146 * The routine is envoked when the state of a device is unknown, like
2147 * during a link down. We should remove the nodelist entry from the
2148 * unmapped list, issue a UNREG_LOGIN, do a software abort of the
2149 * outstanding PRLI command, then free the node entry.
2150 */
2151 static uint32_t
2152 lpfc_device_recov_prli_issue(struct lpfc_vport *vport,
2153 struct lpfc_nodelist *ndlp,
2154 void *arg,
2155 uint32_t evt)
2156 {
2157 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2158 struct lpfc_hba *phba = vport->phba;
2159
2160 /* Don't do anything that will mess up processing of the
2161 * previous RSCN.
2162 */
2163 if (vport->fc_flag & FC_RSCN_DEFERRED)
2164 return ndlp->nlp_state;
2165
2166 /* software abort outstanding PRLI */
2167 lpfc_els_abort(phba, ndlp);
2168
2169 ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
2170 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
2171 spin_lock_irq(shost->host_lock);
2172 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
2173 spin_unlock_irq(shost->host_lock);
2174 lpfc_disc_set_adisc(vport, ndlp);
2175 return ndlp->nlp_state;
2176 }
2177
2178 static uint32_t
2179 lpfc_rcv_plogi_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2180 void *arg, uint32_t evt)
2181 {
2182 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *)arg;
2183 struct ls_rjt stat;
2184
2185 memset(&stat, 0, sizeof(struct ls_rjt));
2186 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
2187 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
2188 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
2189 return ndlp->nlp_state;
2190 }
2191
2192 static uint32_t
2193 lpfc_rcv_prli_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2194 void *arg, uint32_t evt)
2195 {
2196 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *)arg;
2197 struct ls_rjt stat;
2198
2199 memset(&stat, 0, sizeof(struct ls_rjt));
2200 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
2201 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
2202 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
2203 return ndlp->nlp_state;
2204 }
2205
2206 static uint32_t
2207 lpfc_rcv_logo_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2208 void *arg, uint32_t evt)
2209 {
2210 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2211 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *)arg;
2212
2213 spin_lock_irq(shost->host_lock);
2214 ndlp->nlp_flag |= NLP_LOGO_ACC;
2215 spin_unlock_irq(shost->host_lock);
2216 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
2217 return ndlp->nlp_state;
2218 }
2219
2220 static uint32_t
2221 lpfc_rcv_padisc_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2222 void *arg, uint32_t evt)
2223 {
2224 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *)arg;
2225 struct ls_rjt stat;
2226
2227 memset(&stat, 0, sizeof(struct ls_rjt));
2228 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
2229 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
2230 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
2231 return ndlp->nlp_state;
2232 }
2233
2234 static uint32_t
2235 lpfc_rcv_prlo_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2236 void *arg, uint32_t evt)
2237 {
2238 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *)arg;
2239 struct ls_rjt stat;
2240
2241 memset(&stat, 0, sizeof(struct ls_rjt));
2242 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
2243 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
2244 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
2245 return ndlp->nlp_state;
2246 }
2247
2248 static uint32_t
2249 lpfc_cmpl_logo_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2250 void *arg, uint32_t evt)
2251 {
2252 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2253
2254 ndlp->nlp_prev_state = NLP_STE_LOGO_ISSUE;
2255 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
2256 spin_lock_irq(shost->host_lock);
2257 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
2258 spin_unlock_irq(shost->host_lock);
2259 lpfc_disc_set_adisc(vport, ndlp);
2260 return ndlp->nlp_state;
2261 }
2262
2263 static uint32_t
2264 lpfc_device_rm_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2265 void *arg, uint32_t evt)
2266 {
2267 /*
2268 * DevLoss has timed out and is calling for Device Remove.
2269 * In this case, abort the LOGO and cleanup the ndlp
2270 */
2271
2272 lpfc_unreg_rpi(vport, ndlp);
2273 /* software abort outstanding PLOGI */
2274 lpfc_els_abort(vport->phba, ndlp);
2275 lpfc_drop_node(vport, ndlp);
2276 return NLP_STE_FREED_NODE;
2277 }
2278
2279 static uint32_t
2280 lpfc_device_recov_logo_issue(struct lpfc_vport *vport,
2281 struct lpfc_nodelist *ndlp,
2282 void *arg, uint32_t evt)
2283 {
2284 /*
2285 * Device Recovery events have no meaning for a node with a LOGO
2286 * outstanding. The LOGO has to complete first and handle the
2287 * node from that point.
2288 */
2289 return ndlp->nlp_state;
2290 }
2291
2292 static uint32_t
2293 lpfc_rcv_plogi_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2294 void *arg, uint32_t evt)
2295 {
2296 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2297
2298 lpfc_rcv_plogi(vport, ndlp, cmdiocb);
2299 return ndlp->nlp_state;
2300 }
2301
2302 static uint32_t
2303 lpfc_rcv_prli_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2304 void *arg, uint32_t evt)
2305 {
2306 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2307
2308 if (!lpfc_rcv_prli_support_check(vport, ndlp, cmdiocb))
2309 return ndlp->nlp_state;
2310
2311 lpfc_rcv_prli(vport, ndlp, cmdiocb);
2312 lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
2313 return ndlp->nlp_state;
2314 }
2315
2316 static uint32_t
2317 lpfc_rcv_logo_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2318 void *arg, uint32_t evt)
2319 {
2320 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2321
2322 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
2323 return ndlp->nlp_state;
2324 }
2325
2326 static uint32_t
2327 lpfc_rcv_padisc_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2328 void *arg, uint32_t evt)
2329 {
2330 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2331
2332 lpfc_rcv_padisc(vport, ndlp, cmdiocb);
2333 return ndlp->nlp_state;
2334 }
2335
2336 static uint32_t
2337 lpfc_rcv_prlo_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2338 void *arg, uint32_t evt)
2339 {
2340 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2341
2342 lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
2343 return ndlp->nlp_state;
2344 }
2345
2346 static uint32_t
2347 lpfc_device_recov_unmap_node(struct lpfc_vport *vport,
2348 struct lpfc_nodelist *ndlp,
2349 void *arg,
2350 uint32_t evt)
2351 {
2352 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2353
2354 ndlp->nlp_prev_state = NLP_STE_UNMAPPED_NODE;
2355 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
2356 spin_lock_irq(shost->host_lock);
2357 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
2358 ndlp->nlp_fc4_type &= ~(NLP_FC4_FCP | NLP_FC4_NVME);
2359 spin_unlock_irq(shost->host_lock);
2360 lpfc_disc_set_adisc(vport, ndlp);
2361
2362 return ndlp->nlp_state;
2363 }
2364
2365 static uint32_t
2366 lpfc_rcv_plogi_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2367 void *arg, uint32_t evt)
2368 {
2369 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2370
2371 lpfc_rcv_plogi(vport, ndlp, cmdiocb);
2372 return ndlp->nlp_state;
2373 }
2374
2375 static uint32_t
2376 lpfc_rcv_prli_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2377 void *arg, uint32_t evt)
2378 {
2379 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2380
2381 if (!lpfc_rcv_prli_support_check(vport, ndlp, cmdiocb))
2382 return ndlp->nlp_state;
2383 lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
2384 return ndlp->nlp_state;
2385 }
2386
2387 static uint32_t
2388 lpfc_rcv_logo_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2389 void *arg, uint32_t evt)
2390 {
2391 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2392
2393 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
2394 return ndlp->nlp_state;
2395 }
2396
2397 static uint32_t
2398 lpfc_rcv_padisc_mapped_node(struct lpfc_vport *vport,
2399 struct lpfc_nodelist *ndlp,
2400 void *arg, uint32_t evt)
2401 {
2402 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2403
2404 lpfc_rcv_padisc(vport, ndlp, cmdiocb);
2405 return ndlp->nlp_state;
2406 }
2407
2408 static uint32_t
2409 lpfc_rcv_prlo_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2410 void *arg, uint32_t evt)
2411 {
2412 struct lpfc_hba *phba = vport->phba;
2413 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2414
2415 /* flush the target */
2416 lpfc_sli_abort_iocb(vport, &phba->sli.sli3_ring[LPFC_FCP_RING],
2417 ndlp->nlp_sid, 0, LPFC_CTX_TGT);
2418
2419 /* Treat like rcv logo */
2420 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_PRLO);
2421 return ndlp->nlp_state;
2422 }
2423
2424 static uint32_t
2425 lpfc_device_recov_mapped_node(struct lpfc_vport *vport,
2426 struct lpfc_nodelist *ndlp,
2427 void *arg,
2428 uint32_t evt)
2429 {
2430 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2431
2432 ndlp->nlp_prev_state = NLP_STE_MAPPED_NODE;
2433 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
2434 spin_lock_irq(shost->host_lock);
2435 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
2436 ndlp->nlp_fc4_type &= ~(NLP_FC4_FCP | NLP_FC4_NVME);
2437 spin_unlock_irq(shost->host_lock);
2438 lpfc_disc_set_adisc(vport, ndlp);
2439 return ndlp->nlp_state;
2440 }
2441
2442 static uint32_t
2443 lpfc_rcv_plogi_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2444 void *arg, uint32_t evt)
2445 {
2446 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2447 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2448
2449 /* Ignore PLOGI if we have an outstanding LOGO */
2450 if (ndlp->nlp_flag & (NLP_LOGO_SND | NLP_LOGO_ACC))
2451 return ndlp->nlp_state;
2452 if (lpfc_rcv_plogi(vport, ndlp, cmdiocb)) {
2453 lpfc_cancel_retry_delay_tmo(vport, ndlp);
2454 spin_lock_irq(shost->host_lock);
2455 ndlp->nlp_flag &= ~(NLP_NPR_ADISC | NLP_NPR_2B_DISC);
2456 spin_unlock_irq(shost->host_lock);
2457 } else if (!(ndlp->nlp_flag & NLP_NPR_2B_DISC)) {
2458 /* send PLOGI immediately, move to PLOGI issue state */
2459 if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) {
2460 ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
2461 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
2462 lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
2463 }
2464 }
2465 return ndlp->nlp_state;
2466 }
2467
2468 static uint32_t
2469 lpfc_rcv_prli_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2470 void *arg, uint32_t evt)
2471 {
2472 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2473 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2474 struct ls_rjt stat;
2475
2476 memset(&stat, 0, sizeof (struct ls_rjt));
2477 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
2478 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
2479 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
2480
2481 if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) {
2482 if (ndlp->nlp_flag & NLP_NPR_ADISC) {
2483 spin_lock_irq(shost->host_lock);
2484 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
2485 ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
2486 spin_unlock_irq(shost->host_lock);
2487 lpfc_nlp_set_state(vport, ndlp, NLP_STE_ADISC_ISSUE);
2488 lpfc_issue_els_adisc(vport, ndlp, 0);
2489 } else {
2490 ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
2491 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
2492 lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
2493 }
2494 }
2495 return ndlp->nlp_state;
2496 }
2497
2498 static uint32_t
2499 lpfc_rcv_logo_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2500 void *arg, uint32_t evt)
2501 {
2502 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2503
2504 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
2505 return ndlp->nlp_state;
2506 }
2507
2508 static uint32_t
2509 lpfc_rcv_padisc_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2510 void *arg, uint32_t evt)
2511 {
2512 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2513
2514 lpfc_rcv_padisc(vport, ndlp, cmdiocb);
2515 /*
2516 * Do not start discovery if discovery is about to start
2517 * or discovery in progress for this node. Starting discovery
2518 * here will affect the counting of discovery threads.
2519 */
2520 if (!(ndlp->nlp_flag & NLP_DELAY_TMO) &&
2521 !(ndlp->nlp_flag & NLP_NPR_2B_DISC)) {
2522 if (ndlp->nlp_flag & NLP_NPR_ADISC) {
2523 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
2524 ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
2525 lpfc_nlp_set_state(vport, ndlp, NLP_STE_ADISC_ISSUE);
2526 lpfc_issue_els_adisc(vport, ndlp, 0);
2527 } else {
2528 ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
2529 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
2530 lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
2531 }
2532 }
2533 return ndlp->nlp_state;
2534 }
2535
2536 static uint32_t
2537 lpfc_rcv_prlo_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2538 void *arg, uint32_t evt)
2539 {
2540 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2541 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2542
2543 spin_lock_irq(shost->host_lock);
2544 ndlp->nlp_flag |= NLP_LOGO_ACC;
2545 spin_unlock_irq(shost->host_lock);
2546
2547 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
2548
2549 if ((ndlp->nlp_flag & NLP_DELAY_TMO) == 0) {
2550 mod_timer(&ndlp->nlp_delayfunc,
2551 jiffies + msecs_to_jiffies(1000 * 1));
2552 spin_lock_irq(shost->host_lock);
2553 ndlp->nlp_flag |= NLP_DELAY_TMO;
2554 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
2555 spin_unlock_irq(shost->host_lock);
2556 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
2557 } else {
2558 spin_lock_irq(shost->host_lock);
2559 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
2560 spin_unlock_irq(shost->host_lock);
2561 }
2562 return ndlp->nlp_state;
2563 }
2564
2565 static uint32_t
2566 lpfc_cmpl_plogi_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2567 void *arg, uint32_t evt)
2568 {
2569 struct lpfc_iocbq *cmdiocb, *rspiocb;
2570 IOCB_t *irsp;
2571 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2572
2573 cmdiocb = (struct lpfc_iocbq *) arg;
2574 rspiocb = cmdiocb->context_un.rsp_iocb;
2575
2576 irsp = &rspiocb->iocb;
2577 if (irsp->ulpStatus) {
2578 spin_lock_irq(shost->host_lock);
2579 ndlp->nlp_flag |= NLP_DEFER_RM;
2580 spin_unlock_irq(shost->host_lock);
2581 return NLP_STE_FREED_NODE;
2582 }
2583 return ndlp->nlp_state;
2584 }
2585
2586 static uint32_t
2587 lpfc_cmpl_prli_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2588 void *arg, uint32_t evt)
2589 {
2590 struct lpfc_iocbq *cmdiocb, *rspiocb;
2591 IOCB_t *irsp;
2592
2593 cmdiocb = (struct lpfc_iocbq *) arg;
2594 rspiocb = cmdiocb->context_un.rsp_iocb;
2595
2596 irsp = &rspiocb->iocb;
2597 if (irsp->ulpStatus && (ndlp->nlp_flag & NLP_NODEV_REMOVE)) {
2598 lpfc_drop_node(vport, ndlp);
2599 return NLP_STE_FREED_NODE;
2600 }
2601 return ndlp->nlp_state;
2602 }
2603
2604 static uint32_t
2605 lpfc_cmpl_logo_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2606 void *arg, uint32_t evt)
2607 {
2608 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2609
2610 /* For the fabric port just clear the fc flags. */
2611 if (ndlp->nlp_DID == Fabric_DID) {
2612 spin_lock_irq(shost->host_lock);
2613 vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP);
2614 spin_unlock_irq(shost->host_lock);
2615 }
2616 lpfc_unreg_rpi(vport, ndlp);
2617 return ndlp->nlp_state;
2618 }
2619
2620 static uint32_t
2621 lpfc_cmpl_adisc_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2622 void *arg, uint32_t evt)
2623 {
2624 struct lpfc_iocbq *cmdiocb, *rspiocb;
2625 IOCB_t *irsp;
2626
2627 cmdiocb = (struct lpfc_iocbq *) arg;
2628 rspiocb = cmdiocb->context_un.rsp_iocb;
2629
2630 irsp = &rspiocb->iocb;
2631 if (irsp->ulpStatus && (ndlp->nlp_flag & NLP_NODEV_REMOVE)) {
2632 lpfc_drop_node(vport, ndlp);
2633 return NLP_STE_FREED_NODE;
2634 }
2635 return ndlp->nlp_state;
2636 }
2637
2638 static uint32_t
2639 lpfc_cmpl_reglogin_npr_node(struct lpfc_vport *vport,
2640 struct lpfc_nodelist *ndlp,
2641 void *arg, uint32_t evt)
2642 {
2643 LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg;
2644 MAILBOX_t *mb = &pmb->u.mb;
2645
2646 if (!mb->mbxStatus) {
2647 /* SLI4 ports have preallocated logical rpis. */
2648 if (vport->phba->sli_rev < LPFC_SLI_REV4)
2649 ndlp->nlp_rpi = mb->un.varWords[0];
2650 ndlp->nlp_flag |= NLP_RPI_REGISTERED;
2651 if (ndlp->nlp_flag & NLP_LOGO_ACC) {
2652 lpfc_unreg_rpi(vport, ndlp);
2653 }
2654 } else {
2655 if (ndlp->nlp_flag & NLP_NODEV_REMOVE) {
2656 lpfc_drop_node(vport, ndlp);
2657 return NLP_STE_FREED_NODE;
2658 }
2659 }
2660 return ndlp->nlp_state;
2661 }
2662
2663 static uint32_t
2664 lpfc_device_rm_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2665 void *arg, uint32_t evt)
2666 {
2667 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2668
2669 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
2670 spin_lock_irq(shost->host_lock);
2671 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
2672 spin_unlock_irq(shost->host_lock);
2673 return ndlp->nlp_state;
2674 }
2675 lpfc_drop_node(vport, ndlp);
2676 return NLP_STE_FREED_NODE;
2677 }
2678
2679 static uint32_t
2680 lpfc_device_recov_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2681 void *arg, uint32_t evt)
2682 {
2683 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2684
2685 /* Don't do anything that will mess up processing of the
2686 * previous RSCN.
2687 */
2688 if (vport->fc_flag & FC_RSCN_DEFERRED)
2689 return ndlp->nlp_state;
2690
2691 lpfc_cancel_retry_delay_tmo(vport, ndlp);
2692 spin_lock_irq(shost->host_lock);
2693 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
2694 ndlp->nlp_fc4_type &= ~(NLP_FC4_FCP | NLP_FC4_NVME);
2695 spin_unlock_irq(shost->host_lock);
2696 return ndlp->nlp_state;
2697 }
2698
2699
2700 /* This next section defines the NPort Discovery State Machine */
2701
2702 /* There are 4 different double linked lists nodelist entries can reside on.
2703 * The plogi list and adisc list are used when Link Up discovery or RSCN
2704 * processing is needed. Each list holds the nodes that we will send PLOGI
2705 * or ADISC on. These lists will keep track of what nodes will be effected
2706 * by an RSCN, or a Link Up (Typically, all nodes are effected on Link Up).
2707 * The unmapped_list will contain all nodes that we have successfully logged
2708 * into at the Fibre Channel level. The mapped_list will contain all nodes
2709 * that are mapped FCP targets.
2710 */
2711 /*
2712 * The bind list is a list of undiscovered (potentially non-existent) nodes
2713 * that we have saved binding information on. This information is used when
2714 * nodes transition from the unmapped to the mapped list.
2715 */
2716 /* For UNUSED_NODE state, the node has just been allocated .
2717 * For PLOGI_ISSUE and REG_LOGIN_ISSUE, the node is on
2718 * the PLOGI list. For REG_LOGIN_COMPL, the node is taken off the PLOGI list
2719 * and put on the unmapped list. For ADISC processing, the node is taken off
2720 * the ADISC list and placed on either the mapped or unmapped list (depending
2721 * on its previous state). Once on the unmapped list, a PRLI is issued and the
2722 * state changed to PRLI_ISSUE. When the PRLI completion occurs, the state is
2723 * changed to UNMAPPED_NODE. If the completion indicates a mapped
2724 * node, the node is taken off the unmapped list. The binding list is checked
2725 * for a valid binding, or a binding is automatically assigned. If binding
2726 * assignment is unsuccessful, the node is left on the unmapped list. If
2727 * binding assignment is successful, the associated binding list entry (if
2728 * any) is removed, and the node is placed on the mapped list.
2729 */
2730 /*
2731 * For a Link Down, all nodes on the ADISC, PLOGI, unmapped or mapped
2732 * lists will receive a DEVICE_RECOVERY event. If the linkdown or devloss timers
2733 * expire, all effected nodes will receive a DEVICE_RM event.
2734 */
2735 /*
2736 * For a Link Up or RSCN, all nodes will move from the mapped / unmapped lists
2737 * to either the ADISC or PLOGI list. After a Nameserver query or ALPA loopmap
2738 * check, additional nodes may be added or removed (via DEVICE_RM) to / from
2739 * the PLOGI or ADISC lists. Once the PLOGI and ADISC lists are populated,
2740 * we will first process the ADISC list. 32 entries are processed initially and
2741 * ADISC is initited for each one. Completions / Events for each node are
2742 * funnelled thru the state machine. As each node finishes ADISC processing, it
2743 * starts ADISC for any nodes waiting for ADISC processing. If no nodes are
2744 * waiting, and the ADISC list count is identically 0, then we are done. For
2745 * Link Up discovery, since all nodes on the PLOGI list are UNREG_LOGIN'ed, we
2746 * can issue a CLEAR_LA and reenable Link Events. Next we will process the PLOGI
2747 * list. 32 entries are processed initially and PLOGI is initited for each one.
2748 * Completions / Events for each node are funnelled thru the state machine. As
2749 * each node finishes PLOGI processing, it starts PLOGI for any nodes waiting
2750 * for PLOGI processing. If no nodes are waiting, and the PLOGI list count is
2751 * indentically 0, then we are done. We have now completed discovery / RSCN
2752 * handling. Upon completion, ALL nodes should be on either the mapped or
2753 * unmapped lists.
2754 */
2755
2756 static uint32_t (*lpfc_disc_action[NLP_STE_MAX_STATE * NLP_EVT_MAX_EVENT])
2757 (struct lpfc_vport *, struct lpfc_nodelist *, void *, uint32_t) = {
2758 /* Action routine Event Current State */
2759 lpfc_rcv_plogi_unused_node, /* RCV_PLOGI UNUSED_NODE */
2760 lpfc_rcv_els_unused_node, /* RCV_PRLI */
2761 lpfc_rcv_logo_unused_node, /* RCV_LOGO */
2762 lpfc_rcv_els_unused_node, /* RCV_ADISC */
2763 lpfc_rcv_els_unused_node, /* RCV_PDISC */
2764 lpfc_rcv_els_unused_node, /* RCV_PRLO */
2765 lpfc_disc_illegal, /* CMPL_PLOGI */
2766 lpfc_disc_illegal, /* CMPL_PRLI */
2767 lpfc_cmpl_logo_unused_node, /* CMPL_LOGO */
2768 lpfc_disc_illegal, /* CMPL_ADISC */
2769 lpfc_disc_illegal, /* CMPL_REG_LOGIN */
2770 lpfc_device_rm_unused_node, /* DEVICE_RM */
2771 lpfc_device_recov_unused_node, /* DEVICE_RECOVERY */
2772
2773 lpfc_rcv_plogi_plogi_issue, /* RCV_PLOGI PLOGI_ISSUE */
2774 lpfc_rcv_prli_plogi_issue, /* RCV_PRLI */
2775 lpfc_rcv_logo_plogi_issue, /* RCV_LOGO */
2776 lpfc_rcv_els_plogi_issue, /* RCV_ADISC */
2777 lpfc_rcv_els_plogi_issue, /* RCV_PDISC */
2778 lpfc_rcv_els_plogi_issue, /* RCV_PRLO */
2779 lpfc_cmpl_plogi_plogi_issue, /* CMPL_PLOGI */
2780 lpfc_disc_illegal, /* CMPL_PRLI */
2781 lpfc_cmpl_logo_plogi_issue, /* CMPL_LOGO */
2782 lpfc_disc_illegal, /* CMPL_ADISC */
2783 lpfc_cmpl_reglogin_plogi_issue,/* CMPL_REG_LOGIN */
2784 lpfc_device_rm_plogi_issue, /* DEVICE_RM */
2785 lpfc_device_recov_plogi_issue, /* DEVICE_RECOVERY */
2786
2787 lpfc_rcv_plogi_adisc_issue, /* RCV_PLOGI ADISC_ISSUE */
2788 lpfc_rcv_prli_adisc_issue, /* RCV_PRLI */
2789 lpfc_rcv_logo_adisc_issue, /* RCV_LOGO */
2790 lpfc_rcv_padisc_adisc_issue, /* RCV_ADISC */
2791 lpfc_rcv_padisc_adisc_issue, /* RCV_PDISC */
2792 lpfc_rcv_prlo_adisc_issue, /* RCV_PRLO */
2793 lpfc_disc_illegal, /* CMPL_PLOGI */
2794 lpfc_disc_illegal, /* CMPL_PRLI */
2795 lpfc_disc_illegal, /* CMPL_LOGO */
2796 lpfc_cmpl_adisc_adisc_issue, /* CMPL_ADISC */
2797 lpfc_disc_illegal, /* CMPL_REG_LOGIN */
2798 lpfc_device_rm_adisc_issue, /* DEVICE_RM */
2799 lpfc_device_recov_adisc_issue, /* DEVICE_RECOVERY */
2800
2801 lpfc_rcv_plogi_reglogin_issue, /* RCV_PLOGI REG_LOGIN_ISSUE */
2802 lpfc_rcv_prli_reglogin_issue, /* RCV_PLOGI */
2803 lpfc_rcv_logo_reglogin_issue, /* RCV_LOGO */
2804 lpfc_rcv_padisc_reglogin_issue, /* RCV_ADISC */
2805 lpfc_rcv_padisc_reglogin_issue, /* RCV_PDISC */
2806 lpfc_rcv_prlo_reglogin_issue, /* RCV_PRLO */
2807 lpfc_cmpl_plogi_illegal, /* CMPL_PLOGI */
2808 lpfc_disc_illegal, /* CMPL_PRLI */
2809 lpfc_disc_illegal, /* CMPL_LOGO */
2810 lpfc_disc_illegal, /* CMPL_ADISC */
2811 lpfc_cmpl_reglogin_reglogin_issue,/* CMPL_REG_LOGIN */
2812 lpfc_device_rm_reglogin_issue, /* DEVICE_RM */
2813 lpfc_device_recov_reglogin_issue,/* DEVICE_RECOVERY */
2814
2815 lpfc_rcv_plogi_prli_issue, /* RCV_PLOGI PRLI_ISSUE */
2816 lpfc_rcv_prli_prli_issue, /* RCV_PRLI */
2817 lpfc_rcv_logo_prli_issue, /* RCV_LOGO */
2818 lpfc_rcv_padisc_prli_issue, /* RCV_ADISC */
2819 lpfc_rcv_padisc_prli_issue, /* RCV_PDISC */
2820 lpfc_rcv_prlo_prli_issue, /* RCV_PRLO */
2821 lpfc_cmpl_plogi_illegal, /* CMPL_PLOGI */
2822 lpfc_cmpl_prli_prli_issue, /* CMPL_PRLI */
2823 lpfc_disc_illegal, /* CMPL_LOGO */
2824 lpfc_disc_illegal, /* CMPL_ADISC */
2825 lpfc_disc_illegal, /* CMPL_REG_LOGIN */
2826 lpfc_device_rm_prli_issue, /* DEVICE_RM */
2827 lpfc_device_recov_prli_issue, /* DEVICE_RECOVERY */
2828
2829 lpfc_rcv_plogi_logo_issue, /* RCV_PLOGI LOGO_ISSUE */
2830 lpfc_rcv_prli_logo_issue, /* RCV_PRLI */
2831 lpfc_rcv_logo_logo_issue, /* RCV_LOGO */
2832 lpfc_rcv_padisc_logo_issue, /* RCV_ADISC */
2833 lpfc_rcv_padisc_logo_issue, /* RCV_PDISC */
2834 lpfc_rcv_prlo_logo_issue, /* RCV_PRLO */
2835 lpfc_cmpl_plogi_illegal, /* CMPL_PLOGI */
2836 lpfc_disc_illegal, /* CMPL_PRLI */
2837 lpfc_cmpl_logo_logo_issue, /* CMPL_LOGO */
2838 lpfc_disc_illegal, /* CMPL_ADISC */
2839 lpfc_disc_illegal, /* CMPL_REG_LOGIN */
2840 lpfc_device_rm_logo_issue, /* DEVICE_RM */
2841 lpfc_device_recov_logo_issue, /* DEVICE_RECOVERY */
2842
2843 lpfc_rcv_plogi_unmap_node, /* RCV_PLOGI UNMAPPED_NODE */
2844 lpfc_rcv_prli_unmap_node, /* RCV_PRLI */
2845 lpfc_rcv_logo_unmap_node, /* RCV_LOGO */
2846 lpfc_rcv_padisc_unmap_node, /* RCV_ADISC */
2847 lpfc_rcv_padisc_unmap_node, /* RCV_PDISC */
2848 lpfc_rcv_prlo_unmap_node, /* RCV_PRLO */
2849 lpfc_disc_illegal, /* CMPL_PLOGI */
2850 lpfc_disc_illegal, /* CMPL_PRLI */
2851 lpfc_disc_illegal, /* CMPL_LOGO */
2852 lpfc_disc_illegal, /* CMPL_ADISC */
2853 lpfc_disc_illegal, /* CMPL_REG_LOGIN */
2854 lpfc_disc_illegal, /* DEVICE_RM */
2855 lpfc_device_recov_unmap_node, /* DEVICE_RECOVERY */
2856
2857 lpfc_rcv_plogi_mapped_node, /* RCV_PLOGI MAPPED_NODE */
2858 lpfc_rcv_prli_mapped_node, /* RCV_PRLI */
2859 lpfc_rcv_logo_mapped_node, /* RCV_LOGO */
2860 lpfc_rcv_padisc_mapped_node, /* RCV_ADISC */
2861 lpfc_rcv_padisc_mapped_node, /* RCV_PDISC */
2862 lpfc_rcv_prlo_mapped_node, /* RCV_PRLO */
2863 lpfc_disc_illegal, /* CMPL_PLOGI */
2864 lpfc_disc_illegal, /* CMPL_PRLI */
2865 lpfc_disc_illegal, /* CMPL_LOGO */
2866 lpfc_disc_illegal, /* CMPL_ADISC */
2867 lpfc_disc_illegal, /* CMPL_REG_LOGIN */
2868 lpfc_disc_illegal, /* DEVICE_RM */
2869 lpfc_device_recov_mapped_node, /* DEVICE_RECOVERY */
2870
2871 lpfc_rcv_plogi_npr_node, /* RCV_PLOGI NPR_NODE */
2872 lpfc_rcv_prli_npr_node, /* RCV_PRLI */
2873 lpfc_rcv_logo_npr_node, /* RCV_LOGO */
2874 lpfc_rcv_padisc_npr_node, /* RCV_ADISC */
2875 lpfc_rcv_padisc_npr_node, /* RCV_PDISC */
2876 lpfc_rcv_prlo_npr_node, /* RCV_PRLO */
2877 lpfc_cmpl_plogi_npr_node, /* CMPL_PLOGI */
2878 lpfc_cmpl_prli_npr_node, /* CMPL_PRLI */
2879 lpfc_cmpl_logo_npr_node, /* CMPL_LOGO */
2880 lpfc_cmpl_adisc_npr_node, /* CMPL_ADISC */
2881 lpfc_cmpl_reglogin_npr_node, /* CMPL_REG_LOGIN */
2882 lpfc_device_rm_npr_node, /* DEVICE_RM */
2883 lpfc_device_recov_npr_node, /* DEVICE_RECOVERY */
2884 };
2885
2886 int
2887 lpfc_disc_state_machine(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2888 void *arg, uint32_t evt)
2889 {
2890 uint32_t cur_state, rc;
2891 uint32_t(*func) (struct lpfc_vport *, struct lpfc_nodelist *, void *,
2892 uint32_t);
2893 uint32_t got_ndlp = 0;
2894
2895 if (lpfc_nlp_get(ndlp))
2896 got_ndlp = 1;
2897
2898 cur_state = ndlp->nlp_state;
2899
2900 /* DSM in event <evt> on NPort <nlp_DID> in state <cur_state> */
2901 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
2902 "0211 DSM in event x%x on NPort x%x in "
2903 "state %d rpi x%x Data: x%x x%x\n",
2904 evt, ndlp->nlp_DID, cur_state, ndlp->nlp_rpi,
2905 ndlp->nlp_flag, ndlp->nlp_fc4_type);
2906
2907 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_DSM,
2908 "DSM in: evt:%d ste:%d did:x%x",
2909 evt, cur_state, ndlp->nlp_DID);
2910
2911 func = lpfc_disc_action[(cur_state * NLP_EVT_MAX_EVENT) + evt];
2912 rc = (func) (vport, ndlp, arg, evt);
2913
2914 /* DSM out state <rc> on NPort <nlp_DID> */
2915 if (got_ndlp) {
2916 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
2917 "0212 DSM out state %d on NPort x%x "
2918 "rpi x%x Data: x%x\n",
2919 rc, ndlp->nlp_DID, ndlp->nlp_rpi, ndlp->nlp_flag);
2920
2921 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_DSM,
2922 "DSM out: ste:%d did:x%x flg:x%x",
2923 rc, ndlp->nlp_DID, ndlp->nlp_flag);
2924 /* Decrement the ndlp reference count held for this function */
2925 lpfc_nlp_put(ndlp);
2926 } else {
2927 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
2928 "0213 DSM out state %d on NPort free\n", rc);
2929
2930 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_DSM,
2931 "DSM out: ste:%d did:x%x flg:x%x",
2932 rc, 0, 0);
2933 }
2934
2935 return rc;
2936 }
Linux with added FPC-III support