1 /*******************************************************************
2 * This file is part of the Emulex Linux Device Driver for *
3 * Fibre Channel Host Bus Adapters. *
4 * Copyright (C) 2017-2021 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 "lpfc_hw4.h"
36 #include "lpfc_hw.h"
37 #include "lpfc_sli.h"
38 #include "lpfc_sli4.h"
39 #include "lpfc_nl.h"
40 #include "lpfc_disc.h"
41 #include "lpfc.h"
42 #include "lpfc_scsi.h"
43 #include "lpfc_nvme.h"
44 #include "lpfc_logmsg.h"
45 #include "lpfc_crtn.h"
46 #include "lpfc_vport.h"
47 #include "lpfc_debugfs.h"
48
49
50 /* Called to verify a rcv'ed ADISC was intended for us. */
51 static int
lpfc_check_adisc(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,struct lpfc_name * nn,struct lpfc_name * pn)52 lpfc_check_adisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
53 struct lpfc_name *nn, struct lpfc_name *pn)
54 {
55 /* First, we MUST have a RPI registered */
56 if (!(ndlp->nlp_flag & NLP_RPI_REGISTERED))
57 return 0;
58
59 /* Compare the ADISC rsp WWNN / WWPN matches our internal node
60 * table entry for that node.
61 */
62 if (memcmp(nn, &ndlp->nlp_nodename, sizeof (struct lpfc_name)))
63 return 0;
64
65 if (memcmp(pn, &ndlp->nlp_portname, sizeof (struct lpfc_name)))
66 return 0;
67
68 /* we match, return success */
69 return 1;
70 }
71
72 int
lpfc_check_sparm(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,struct serv_parm * sp,uint32_t class,int flogi)73 lpfc_check_sparm(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
74 struct serv_parm *sp, uint32_t class, int flogi)
75 {
76 volatile struct serv_parm *hsp = &vport->fc_sparam;
77 uint16_t hsp_value, ssp_value = 0;
78
79 /*
80 * The receive data field size and buffer-to-buffer receive data field
81 * size entries are 16 bits but are represented as two 8-bit fields in
82 * the driver data structure to account for rsvd bits and other control
83 * bits. Reconstruct and compare the fields as a 16-bit values before
84 * correcting the byte values.
85 */
86 if (sp->cls1.classValid) {
87 if (!flogi) {
88 hsp_value = ((hsp->cls1.rcvDataSizeMsb << 8) |
89 hsp->cls1.rcvDataSizeLsb);
90 ssp_value = ((sp->cls1.rcvDataSizeMsb << 8) |
91 sp->cls1.rcvDataSizeLsb);
92 if (!ssp_value)
93 goto bad_service_param;
94 if (ssp_value > hsp_value) {
95 sp->cls1.rcvDataSizeLsb =
96 hsp->cls1.rcvDataSizeLsb;
97 sp->cls1.rcvDataSizeMsb =
98 hsp->cls1.rcvDataSizeMsb;
99 }
100 }
101 } else if (class == CLASS1)
102 goto bad_service_param;
103 if (sp->cls2.classValid) {
104 if (!flogi) {
105 hsp_value = ((hsp->cls2.rcvDataSizeMsb << 8) |
106 hsp->cls2.rcvDataSizeLsb);
107 ssp_value = ((sp->cls2.rcvDataSizeMsb << 8) |
108 sp->cls2.rcvDataSizeLsb);
109 if (!ssp_value)
110 goto bad_service_param;
111 if (ssp_value > hsp_value) {
112 sp->cls2.rcvDataSizeLsb =
113 hsp->cls2.rcvDataSizeLsb;
114 sp->cls2.rcvDataSizeMsb =
115 hsp->cls2.rcvDataSizeMsb;
116 }
117 }
118 } else if (class == CLASS2)
119 goto bad_service_param;
120 if (sp->cls3.classValid) {
121 if (!flogi) {
122 hsp_value = ((hsp->cls3.rcvDataSizeMsb << 8) |
123 hsp->cls3.rcvDataSizeLsb);
124 ssp_value = ((sp->cls3.rcvDataSizeMsb << 8) |
125 sp->cls3.rcvDataSizeLsb);
126 if (!ssp_value)
127 goto bad_service_param;
128 if (ssp_value > hsp_value) {
129 sp->cls3.rcvDataSizeLsb =
130 hsp->cls3.rcvDataSizeLsb;
131 sp->cls3.rcvDataSizeMsb =
132 hsp->cls3.rcvDataSizeMsb;
133 }
134 }
135 } else if (class == CLASS3)
136 goto bad_service_param;
137
138 /*
139 * Preserve the upper four bits of the MSB from the PLOGI response.
140 * These bits contain the Buffer-to-Buffer State Change Number
141 * from the target and need to be passed to the FW.
142 */
143 hsp_value = (hsp->cmn.bbRcvSizeMsb << 8) | hsp->cmn.bbRcvSizeLsb;
144 ssp_value = (sp->cmn.bbRcvSizeMsb << 8) | sp->cmn.bbRcvSizeLsb;
145 if (ssp_value > hsp_value) {
146 sp->cmn.bbRcvSizeLsb = hsp->cmn.bbRcvSizeLsb;
147 sp->cmn.bbRcvSizeMsb = (sp->cmn.bbRcvSizeMsb & 0xF0) |
148 (hsp->cmn.bbRcvSizeMsb & 0x0F);
149 }
150
151 memcpy(&ndlp->nlp_nodename, &sp->nodeName, sizeof (struct lpfc_name));
152 memcpy(&ndlp->nlp_portname, &sp->portName, sizeof (struct lpfc_name));
153 return 1;
154 bad_service_param:
155 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
156 "0207 Device %x "
157 "(%02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x) sent "
158 "invalid service parameters. Ignoring device.\n",
159 ndlp->nlp_DID,
160 sp->nodeName.u.wwn[0], sp->nodeName.u.wwn[1],
161 sp->nodeName.u.wwn[2], sp->nodeName.u.wwn[3],
162 sp->nodeName.u.wwn[4], sp->nodeName.u.wwn[5],
163 sp->nodeName.u.wwn[6], sp->nodeName.u.wwn[7]);
164 return 0;
165 }
166
167 static void *
lpfc_check_elscmpl_iocb(struct lpfc_hba * phba,struct lpfc_iocbq * cmdiocb,struct lpfc_iocbq * rspiocb)168 lpfc_check_elscmpl_iocb(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
169 struct lpfc_iocbq *rspiocb)
170 {
171 struct lpfc_dmabuf *pcmd, *prsp;
172 uint32_t *lp;
173 void *ptr = NULL;
174 IOCB_t *irsp;
175
176 irsp = &rspiocb->iocb;
177 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
178
179 /* For lpfc_els_abort, context2 could be zero'ed to delay
180 * freeing associated memory till after ABTS completes.
181 */
182 if (pcmd) {
183 prsp = list_get_first(&pcmd->list, struct lpfc_dmabuf,
184 list);
185 if (prsp) {
186 lp = (uint32_t *) prsp->virt;
187 ptr = (void *)((uint8_t *)lp + sizeof(uint32_t));
188 }
189 } else {
190 /* Force ulpStatus error since we are returning NULL ptr */
191 if (!(irsp->ulpStatus)) {
192 irsp->ulpStatus = IOSTAT_LOCAL_REJECT;
193 irsp->un.ulpWord[4] = IOERR_SLI_ABORTED;
194 }
195 ptr = NULL;
196 }
197 return ptr;
198 }
199
200
201
202 /*
203 * Free resources / clean up outstanding I/Os
204 * associated with a LPFC_NODELIST entry. This
205 * routine effectively results in a "software abort".
206 */
207 void
lpfc_els_abort(struct lpfc_hba * phba,struct lpfc_nodelist * ndlp)208 lpfc_els_abort(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
209 {
210 LIST_HEAD(abort_list);
211 struct lpfc_sli_ring *pring;
212 struct lpfc_iocbq *iocb, *next_iocb;
213
214 pring = lpfc_phba_elsring(phba);
215
216 /* In case of error recovery path, we might have a NULL pring here */
217 if (unlikely(!pring))
218 return;
219
220 /* Abort outstanding I/O on NPort <nlp_DID> */
221 lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_DISCOVERY,
222 "2819 Abort outstanding I/O on NPort x%x "
223 "Data: x%x x%x x%x\n",
224 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
225 ndlp->nlp_rpi);
226 /* Clean up all fabric IOs first.*/
227 lpfc_fabric_abort_nport(ndlp);
228
229 /*
230 * Lock the ELS ring txcmplq for SLI3/SLI4 and build a local list
231 * of all ELS IOs that need an ABTS. The IOs need to stay on the
232 * txcmplq so that the abort operation completes them successfully.
233 */
234 spin_lock_irq(&phba->hbalock);
235 if (phba->sli_rev == LPFC_SLI_REV4)
236 spin_lock(&pring->ring_lock);
237 list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq, list) {
238 /* Add to abort_list on on NDLP match. */
239 if (lpfc_check_sli_ndlp(phba, pring, iocb, ndlp))
240 list_add_tail(&iocb->dlist, &abort_list);
241 }
242 if (phba->sli_rev == LPFC_SLI_REV4)
243 spin_unlock(&pring->ring_lock);
244 spin_unlock_irq(&phba->hbalock);
245
246 /* Abort the targeted IOs and remove them from the abort list. */
247 list_for_each_entry_safe(iocb, next_iocb, &abort_list, dlist) {
248 spin_lock_irq(&phba->hbalock);
249 list_del_init(&iocb->dlist);
250 lpfc_sli_issue_abort_iotag(phba, pring, iocb, NULL);
251 spin_unlock_irq(&phba->hbalock);
252 }
253 /* Make sure HBA is alive */
254 lpfc_issue_hb_tmo(phba);
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 /* lpfc_defer_plogi_acc - Issue PLOGI ACC after reg_login completes
283 * @phba: pointer to lpfc hba data structure.
284 * @login_mbox: pointer to REG_RPI mailbox object
285 *
286 * The ACC for a rcv'ed PLOGI is deferred until AFTER the REG_RPI completes
287 */
288 static void
lpfc_defer_plogi_acc(struct lpfc_hba * phba,LPFC_MBOXQ_t * login_mbox)289 lpfc_defer_plogi_acc(struct lpfc_hba *phba, LPFC_MBOXQ_t *login_mbox)
290 {
291 struct lpfc_iocbq *save_iocb;
292 struct lpfc_nodelist *ndlp;
293 MAILBOX_t *mb = &login_mbox->u.mb;
294
295 int rc;
296
297 ndlp = login_mbox->ctx_ndlp;
298 save_iocb = login_mbox->context3;
299
300 if (mb->mbxStatus == MBX_SUCCESS) {
301 /* Now that REG_RPI completed successfully,
302 * we can now proceed with sending the PLOGI ACC.
303 */
304 rc = lpfc_els_rsp_acc(login_mbox->vport, ELS_CMD_PLOGI,
305 save_iocb, ndlp, NULL);
306 if (rc) {
307 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
308 "4576 PLOGI ACC fails pt2pt discovery: "
309 "DID %x Data: %x\n", ndlp->nlp_DID, rc);
310 }
311 }
312
313 /* Now process the REG_RPI cmpl */
314 lpfc_mbx_cmpl_reg_login(phba, login_mbox);
315 ndlp->nlp_flag &= ~NLP_ACC_REGLOGIN;
316 kfree(save_iocb);
317 }
318
319 static int
lpfc_rcv_plogi(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,struct lpfc_iocbq * cmdiocb)320 lpfc_rcv_plogi(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
321 struct lpfc_iocbq *cmdiocb)
322 {
323 struct lpfc_hba *phba = vport->phba;
324 struct lpfc_dmabuf *pcmd;
325 uint64_t nlp_portwwn = 0;
326 uint32_t *lp;
327 IOCB_t *icmd;
328 struct serv_parm *sp;
329 uint32_t ed_tov;
330 LPFC_MBOXQ_t *link_mbox;
331 LPFC_MBOXQ_t *login_mbox;
332 struct lpfc_iocbq *save_iocb;
333 struct ls_rjt stat;
334 uint32_t vid, flag;
335 int rc;
336
337 memset(&stat, 0, sizeof (struct ls_rjt));
338 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
339 lp = (uint32_t *) pcmd->virt;
340 sp = (struct serv_parm *) ((uint8_t *) lp + sizeof (uint32_t));
341 if (wwn_to_u64(sp->portName.u.wwn) == 0) {
342 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
343 "0140 PLOGI Reject: invalid pname\n");
344 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
345 stat.un.b.lsRjtRsnCodeExp = LSEXP_INVALID_PNAME;
346 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
347 NULL);
348 return 0;
349 }
350 if (wwn_to_u64(sp->nodeName.u.wwn) == 0) {
351 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
352 "0141 PLOGI Reject: invalid nname\n");
353 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
354 stat.un.b.lsRjtRsnCodeExp = LSEXP_INVALID_NNAME;
355 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
356 NULL);
357 return 0;
358 }
359
360 nlp_portwwn = wwn_to_u64(ndlp->nlp_portname.u.wwn);
361 if ((lpfc_check_sparm(vport, ndlp, sp, CLASS3, 0) == 0)) {
362 /* Reject this request because invalid parameters */
363 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
364 stat.un.b.lsRjtRsnCodeExp = LSEXP_SPARM_OPTIONS;
365 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
366 NULL);
367 return 0;
368 }
369 icmd = &cmdiocb->iocb;
370
371 /* PLOGI chkparm OK */
372 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
373 "0114 PLOGI chkparm OK Data: x%x x%x x%x "
374 "x%x x%x x%x\n",
375 ndlp->nlp_DID, ndlp->nlp_state, ndlp->nlp_flag,
376 ndlp->nlp_rpi, vport->port_state,
377 vport->fc_flag);
378
379 if (vport->cfg_fcp_class == 2 && sp->cls2.classValid)
380 ndlp->nlp_fcp_info |= CLASS2;
381 else
382 ndlp->nlp_fcp_info |= CLASS3;
383
384 ndlp->nlp_class_sup = 0;
385 if (sp->cls1.classValid)
386 ndlp->nlp_class_sup |= FC_COS_CLASS1;
387 if (sp->cls2.classValid)
388 ndlp->nlp_class_sup |= FC_COS_CLASS2;
389 if (sp->cls3.classValid)
390 ndlp->nlp_class_sup |= FC_COS_CLASS3;
391 if (sp->cls4.classValid)
392 ndlp->nlp_class_sup |= FC_COS_CLASS4;
393 ndlp->nlp_maxframe =
394 ((sp->cmn.bbRcvSizeMsb & 0x0F) << 8) | sp->cmn.bbRcvSizeLsb;
395 /* if already logged in, do implicit logout */
396 switch (ndlp->nlp_state) {
397 case NLP_STE_NPR_NODE:
398 if (!(ndlp->nlp_flag & NLP_NPR_ADISC))
399 break;
400 fallthrough;
401 case NLP_STE_REG_LOGIN_ISSUE:
402 case NLP_STE_PRLI_ISSUE:
403 case NLP_STE_UNMAPPED_NODE:
404 case NLP_STE_MAPPED_NODE:
405 /* For initiators, lpfc_plogi_confirm_nport skips fabric did.
406 * For target mode, execute implicit logo.
407 * Fabric nodes go into NPR.
408 */
409 if (!(ndlp->nlp_type & NLP_FABRIC) &&
410 !(phba->nvmet_support)) {
411 /* Clear ndlp info, since follow up PRLI may have
412 * updated ndlp information
413 */
414 ndlp->nlp_type &= ~(NLP_FCP_TARGET | NLP_FCP_INITIATOR);
415 ndlp->nlp_type &= ~(NLP_NVME_TARGET | NLP_NVME_INITIATOR);
416 ndlp->nlp_fcp_info &= ~NLP_FCP_2_DEVICE;
417 ndlp->nlp_nvme_info &= ~NLP_NVME_NSLER;
418 ndlp->nlp_flag &= ~NLP_FIRSTBURST;
419
420 lpfc_els_rsp_acc(vport, ELS_CMD_PLOGI, cmdiocb,
421 ndlp, NULL);
422 return 1;
423 }
424 if (nlp_portwwn != 0 &&
425 nlp_portwwn != wwn_to_u64(sp->portName.u.wwn))
426 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
427 "0143 PLOGI recv'd from DID: x%x "
428 "WWPN changed: old %llx new %llx\n",
429 ndlp->nlp_DID,
430 (unsigned long long)nlp_portwwn,
431 (unsigned long long)
432 wwn_to_u64(sp->portName.u.wwn));
433
434 /* Notify transport of connectivity loss to trigger cleanup. */
435 if (phba->nvmet_support &&
436 ndlp->nlp_state == NLP_STE_UNMAPPED_NODE)
437 lpfc_nvmet_invalidate_host(phba, ndlp);
438
439 ndlp->nlp_prev_state = ndlp->nlp_state;
440 /* rport needs to be unregistered first */
441 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
442 break;
443 }
444
445 ndlp->nlp_type &= ~(NLP_FCP_TARGET | NLP_FCP_INITIATOR);
446 ndlp->nlp_type &= ~(NLP_NVME_TARGET | NLP_NVME_INITIATOR);
447 ndlp->nlp_fcp_info &= ~NLP_FCP_2_DEVICE;
448 ndlp->nlp_nvme_info &= ~NLP_NVME_NSLER;
449 ndlp->nlp_flag &= ~NLP_FIRSTBURST;
450
451 login_mbox = NULL;
452 link_mbox = NULL;
453 save_iocb = NULL;
454
455 /* Check for Nport to NPort pt2pt protocol */
456 if ((vport->fc_flag & FC_PT2PT) &&
457 !(vport->fc_flag & FC_PT2PT_PLOGI)) {
458 /* rcv'ed PLOGI decides what our NPortId will be */
459 vport->fc_myDID = icmd->un.rcvels.parmRo;
460
461 /* If there is an outstanding FLOGI, abort it now.
462 * The remote NPort is not going to ACC our FLOGI
463 * if its already issuing a PLOGI for pt2pt mode.
464 * This indicates our FLOGI was dropped; however, we
465 * must have ACCed the remote NPorts FLOGI to us
466 * to make it here.
467 */
468 if (phba->hba_flag & HBA_FLOGI_OUTSTANDING)
469 lpfc_els_abort_flogi(phba);
470
471 ed_tov = be32_to_cpu(sp->cmn.e_d_tov);
472 if (sp->cmn.edtovResolution) {
473 /* E_D_TOV ticks are in nanoseconds */
474 ed_tov = (phba->fc_edtov + 999999) / 1000000;
475 }
476
477 /*
478 * For pt-to-pt, use the larger EDTOV
479 * RATOV = 2 * EDTOV
480 */
481 if (ed_tov > phba->fc_edtov)
482 phba->fc_edtov = ed_tov;
483 phba->fc_ratov = (2 * phba->fc_edtov) / 1000;
484
485 memcpy(&phba->fc_fabparam, sp, sizeof(struct serv_parm));
486
487 /* Issue CONFIG_LINK for SLI3 or REG_VFI for SLI4,
488 * to account for updated TOV's / parameters
489 */
490 if (phba->sli_rev == LPFC_SLI_REV4)
491 lpfc_issue_reg_vfi(vport);
492 else {
493 link_mbox = mempool_alloc(phba->mbox_mem_pool,
494 GFP_KERNEL);
495 if (!link_mbox)
496 goto out;
497 lpfc_config_link(phba, link_mbox);
498 link_mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
499 link_mbox->vport = vport;
500 link_mbox->ctx_ndlp = ndlp;
501
502 rc = lpfc_sli_issue_mbox(phba, link_mbox, MBX_NOWAIT);
503 if (rc == MBX_NOT_FINISHED) {
504 mempool_free(link_mbox, phba->mbox_mem_pool);
505 goto out;
506 }
507 }
508
509 lpfc_can_disctmo(vport);
510 }
511
512 ndlp->nlp_flag &= ~NLP_SUPPRESS_RSP;
513 if ((phba->sli.sli_flag & LPFC_SLI_SUPPRESS_RSP) &&
514 sp->cmn.valid_vendor_ver_level) {
515 vid = be32_to_cpu(sp->un.vv.vid);
516 flag = be32_to_cpu(sp->un.vv.flags);
517 if ((vid == LPFC_VV_EMLX_ID) && (flag & LPFC_VV_SUPPRESS_RSP))
518 ndlp->nlp_flag |= NLP_SUPPRESS_RSP;
519 }
520
521 login_mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
522 if (!login_mbox)
523 goto out;
524
525 save_iocb = kzalloc(sizeof(*save_iocb), GFP_KERNEL);
526 if (!save_iocb)
527 goto out;
528
529 /* Save info from cmd IOCB to be used in rsp after all mbox completes */
530 memcpy((uint8_t *)save_iocb, (uint8_t *)cmdiocb,
531 sizeof(struct lpfc_iocbq));
532
533 /* Registering an existing RPI behaves differently for SLI3 vs SLI4 */
534 if (phba->sli_rev == LPFC_SLI_REV4)
535 lpfc_unreg_rpi(vport, ndlp);
536
537 /* Issue REG_LOGIN first, before ACCing the PLOGI, thus we will
538 * always be deferring the ACC.
539 */
540 rc = lpfc_reg_rpi(phba, vport->vpi, icmd->un.rcvels.remoteID,
541 (uint8_t *)sp, login_mbox, ndlp->nlp_rpi);
542 if (rc)
543 goto out;
544
545 login_mbox->mbox_cmpl = lpfc_mbx_cmpl_reg_login;
546 login_mbox->vport = vport;
547
548 /*
549 * If there is an outstanding PLOGI issued, abort it before
550 * sending ACC rsp for received PLOGI. If pending plogi
551 * is not canceled here, the plogi will be rejected by
552 * remote port and will be retried. On a configuration with
553 * single discovery thread, this will cause a huge delay in
554 * discovery. Also this will cause multiple state machines
555 * running in parallel for this node.
556 * This only applies to a fabric environment.
557 */
558 if ((ndlp->nlp_state == NLP_STE_PLOGI_ISSUE) &&
559 (vport->fc_flag & FC_FABRIC)) {
560 /* software abort outstanding PLOGI */
561 lpfc_els_abort(phba, ndlp);
562 }
563
564 if ((vport->port_type == LPFC_NPIV_PORT &&
565 vport->cfg_restrict_login)) {
566
567 /* no deferred ACC */
568 kfree(save_iocb);
569
570 /* This is an NPIV SLI4 instance that does not need to register
571 * a default RPI.
572 */
573 if (phba->sli_rev == LPFC_SLI_REV4) {
574 mempool_free(login_mbox, phba->mbox_mem_pool);
575 login_mbox = NULL;
576 } else {
577 /* In order to preserve RPIs, we want to cleanup
578 * the default RPI the firmware created to rcv
579 * this ELS request. The only way to do this is
580 * to register, then unregister the RPI.
581 */
582 spin_lock_irq(&ndlp->lock);
583 ndlp->nlp_flag |= (NLP_RM_DFLT_RPI | NLP_ACC_REGLOGIN |
584 NLP_RCV_PLOGI);
585 spin_unlock_irq(&ndlp->lock);
586 }
587
588 stat.un.b.lsRjtRsnCode = LSRJT_INVALID_CMD;
589 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
590 rc = lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb,
591 ndlp, login_mbox);
592 if (rc)
593 mempool_free(login_mbox, phba->mbox_mem_pool);
594 return 1;
595 }
596
597 /* So the order here should be:
598 * SLI3 pt2pt
599 * Issue CONFIG_LINK mbox
600 * CONFIG_LINK cmpl
601 * SLI4 pt2pt
602 * Issue REG_VFI mbox
603 * REG_VFI cmpl
604 * SLI4
605 * Issue UNREG RPI mbx
606 * UNREG RPI cmpl
607 * Issue REG_RPI mbox
608 * REG RPI cmpl
609 * Issue PLOGI ACC
610 * PLOGI ACC cmpl
611 */
612 login_mbox->mbox_cmpl = lpfc_defer_plogi_acc;
613 login_mbox->ctx_ndlp = lpfc_nlp_get(ndlp);
614 login_mbox->context3 = save_iocb; /* For PLOGI ACC */
615
616 spin_lock_irq(&ndlp->lock);
617 ndlp->nlp_flag |= (NLP_ACC_REGLOGIN | NLP_RCV_PLOGI);
618 spin_unlock_irq(&ndlp->lock);
619
620 /* Start the ball rolling by issuing REG_LOGIN here */
621 rc = lpfc_sli_issue_mbox(phba, login_mbox, MBX_NOWAIT);
622 if (rc == MBX_NOT_FINISHED)
623 goto out;
624 lpfc_nlp_set_state(vport, ndlp, NLP_STE_REG_LOGIN_ISSUE);
625
626 return 1;
627 out:
628 kfree(save_iocb);
629 if (login_mbox)
630 mempool_free(login_mbox, phba->mbox_mem_pool);
631
632 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
633 stat.un.b.lsRjtRsnCodeExp = LSEXP_OUT_OF_RESOURCE;
634 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
635 return 0;
636 }
637
638 /**
639 * lpfc_mbx_cmpl_resume_rpi - Resume RPI completion routine
640 * @phba: pointer to lpfc hba data structure.
641 * @mboxq: pointer to mailbox object
642 *
643 * This routine is invoked to issue a completion to a rcv'ed
644 * ADISC or PDISC after the paused RPI has been resumed.
645 **/
646 static void
lpfc_mbx_cmpl_resume_rpi(struct lpfc_hba * phba,LPFC_MBOXQ_t * mboxq)647 lpfc_mbx_cmpl_resume_rpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
648 {
649 struct lpfc_vport *vport;
650 struct lpfc_iocbq *elsiocb;
651 struct lpfc_nodelist *ndlp;
652 uint32_t cmd;
653
654 elsiocb = (struct lpfc_iocbq *)mboxq->ctx_buf;
655 ndlp = (struct lpfc_nodelist *)mboxq->ctx_ndlp;
656 vport = mboxq->vport;
657 cmd = elsiocb->drvrTimeout;
658
659 if (cmd == ELS_CMD_ADISC) {
660 lpfc_els_rsp_adisc_acc(vport, elsiocb, ndlp);
661 } else {
662 lpfc_els_rsp_acc(vport, ELS_CMD_PLOGI, elsiocb,
663 ndlp, NULL);
664 }
665
666 /* This nlp_put pairs with lpfc_sli4_resume_rpi */
667 lpfc_nlp_put(ndlp);
668
669 kfree(elsiocb);
670 mempool_free(mboxq, phba->mbox_mem_pool);
671 }
672
673 static int
lpfc_rcv_padisc(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,struct lpfc_iocbq * cmdiocb)674 lpfc_rcv_padisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
675 struct lpfc_iocbq *cmdiocb)
676 {
677 struct lpfc_iocbq *elsiocb;
678 struct lpfc_dmabuf *pcmd;
679 struct serv_parm *sp;
680 struct lpfc_name *pnn, *ppn;
681 struct ls_rjt stat;
682 ADISC *ap;
683 IOCB_t *icmd;
684 uint32_t *lp;
685 uint32_t cmd;
686
687 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
688 lp = (uint32_t *) pcmd->virt;
689
690 cmd = *lp++;
691 if (cmd == ELS_CMD_ADISC) {
692 ap = (ADISC *) lp;
693 pnn = (struct lpfc_name *) & ap->nodeName;
694 ppn = (struct lpfc_name *) & ap->portName;
695 } else {
696 sp = (struct serv_parm *) lp;
697 pnn = (struct lpfc_name *) & sp->nodeName;
698 ppn = (struct lpfc_name *) & sp->portName;
699 }
700
701 icmd = &cmdiocb->iocb;
702 if (icmd->ulpStatus == 0 && lpfc_check_adisc(vport, ndlp, pnn, ppn)) {
703
704 /*
705 * As soon as we send ACC, the remote NPort can
706 * start sending us data. Thus, for SLI4 we must
707 * resume the RPI before the ACC goes out.
708 */
709 if (vport->phba->sli_rev == LPFC_SLI_REV4) {
710 elsiocb = kmalloc(sizeof(struct lpfc_iocbq),
711 GFP_KERNEL);
712 if (elsiocb) {
713
714 /* Save info from cmd IOCB used in rsp */
715 memcpy((uint8_t *)elsiocb, (uint8_t *)cmdiocb,
716 sizeof(struct lpfc_iocbq));
717
718 /* Save the ELS cmd */
719 elsiocb->drvrTimeout = cmd;
720
721 lpfc_sli4_resume_rpi(ndlp,
722 lpfc_mbx_cmpl_resume_rpi, elsiocb);
723 goto out;
724 }
725 }
726
727 if (cmd == ELS_CMD_ADISC) {
728 lpfc_els_rsp_adisc_acc(vport, cmdiocb, ndlp);
729 } else {
730 lpfc_els_rsp_acc(vport, ELS_CMD_PLOGI, cmdiocb,
731 ndlp, NULL);
732 }
733 out:
734 /* If we are authenticated, move to the proper state.
735 * It is possible an ADISC arrived and the remote nport
736 * is already in MAPPED or UNMAPPED state. Catch this
737 * condition and don't set the nlp_state again because
738 * it causes an unnecessary transport unregister/register.
739 *
740 * Nodes marked for ADISC will move MAPPED or UNMAPPED state
741 * after issuing ADISC
742 */
743 if (ndlp->nlp_type & (NLP_FCP_TARGET | NLP_NVME_TARGET)) {
744 if ((ndlp->nlp_state != NLP_STE_MAPPED_NODE) &&
745 !(ndlp->nlp_flag & NLP_NPR_ADISC))
746 lpfc_nlp_set_state(vport, ndlp,
747 NLP_STE_MAPPED_NODE);
748 }
749
750 return 1;
751 }
752 /* Reject this request because invalid parameters */
753 stat.un.b.lsRjtRsvd0 = 0;
754 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
755 stat.un.b.lsRjtRsnCodeExp = LSEXP_SPARM_OPTIONS;
756 stat.un.b.vendorUnique = 0;
757 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
758
759 /* 1 sec timeout */
760 mod_timer(&ndlp->nlp_delayfunc, jiffies + msecs_to_jiffies(1000));
761
762 spin_lock_irq(&ndlp->lock);
763 ndlp->nlp_flag |= NLP_DELAY_TMO;
764 spin_unlock_irq(&ndlp->lock);
765 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
766 ndlp->nlp_prev_state = ndlp->nlp_state;
767 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
768 return 0;
769 }
770
771 static int
lpfc_rcv_logo(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,struct lpfc_iocbq * cmdiocb,uint32_t els_cmd)772 lpfc_rcv_logo(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
773 struct lpfc_iocbq *cmdiocb, uint32_t els_cmd)
774 {
775 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
776 struct lpfc_hba *phba = vport->phba;
777 struct lpfc_vport **vports;
778 int i, active_vlink_present = 0 ;
779
780 /* Put ndlp in NPR state with 1 sec timeout for plogi, ACC logo */
781 /* Only call LOGO ACC for first LOGO, this avoids sending unnecessary
782 * PLOGIs during LOGO storms from a device.
783 */
784 spin_lock_irq(&ndlp->lock);
785 ndlp->nlp_flag |= NLP_LOGO_ACC;
786 spin_unlock_irq(&ndlp->lock);
787 if (els_cmd == ELS_CMD_PRLO)
788 lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
789 else
790 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
791
792 /* This clause allows the initiator to ACC the LOGO back to the
793 * Fabric Domain Controller. It does deliberately skip all other
794 * steps because some fabrics send RDP requests after logging out
795 * from the initiator.
796 */
797 if (ndlp->nlp_type & NLP_FABRIC &&
798 ((ndlp->nlp_DID & WELL_KNOWN_DID_MASK) != WELL_KNOWN_DID_MASK))
799 return 0;
800
801 /* Notify transport of connectivity loss to trigger cleanup. */
802 if (phba->nvmet_support &&
803 ndlp->nlp_state == NLP_STE_UNMAPPED_NODE)
804 lpfc_nvmet_invalidate_host(phba, ndlp);
805
806 if (ndlp->nlp_DID == Fabric_DID) {
807 if (vport->port_state <= LPFC_FDISC)
808 goto out;
809 lpfc_linkdown_port(vport);
810 spin_lock_irq(shost->host_lock);
811 vport->fc_flag |= FC_VPORT_LOGO_RCVD;
812 spin_unlock_irq(shost->host_lock);
813 vports = lpfc_create_vport_work_array(phba);
814 if (vports) {
815 for (i = 0; i <= phba->max_vports && vports[i] != NULL;
816 i++) {
817 if ((!(vports[i]->fc_flag &
818 FC_VPORT_LOGO_RCVD)) &&
819 (vports[i]->port_state > LPFC_FDISC)) {
820 active_vlink_present = 1;
821 break;
822 }
823 }
824 lpfc_destroy_vport_work_array(phba, vports);
825 }
826
827 /*
828 * Don't re-instantiate if vport is marked for deletion.
829 * If we are here first then vport_delete is going to wait
830 * for discovery to complete.
831 */
832 if (!(vport->load_flag & FC_UNLOADING) &&
833 active_vlink_present) {
834 /*
835 * If there are other active VLinks present,
836 * re-instantiate the Vlink using FDISC.
837 */
838 mod_timer(&ndlp->nlp_delayfunc,
839 jiffies + msecs_to_jiffies(1000));
840 spin_lock_irq(&ndlp->lock);
841 ndlp->nlp_flag |= NLP_DELAY_TMO;
842 spin_unlock_irq(&ndlp->lock);
843 ndlp->nlp_last_elscmd = ELS_CMD_FDISC;
844 vport->port_state = LPFC_FDISC;
845 } else {
846 spin_lock_irq(shost->host_lock);
847 phba->pport->fc_flag &= ~FC_LOGO_RCVD_DID_CHNG;
848 spin_unlock_irq(shost->host_lock);
849 lpfc_retry_pport_discovery(phba);
850 }
851 } else if ((!(ndlp->nlp_type & NLP_FABRIC) &&
852 ((ndlp->nlp_type & NLP_FCP_TARGET) ||
853 (ndlp->nlp_type & NLP_NVME_TARGET) ||
854 (vport->fc_flag & FC_PT2PT))) ||
855 (ndlp->nlp_state == NLP_STE_ADISC_ISSUE)) {
856 /* Only try to re-login if this is NOT a Fabric Node
857 * AND the remote NPORT is a FCP/NVME Target or we
858 * are in pt2pt mode. NLP_STE_ADISC_ISSUE is a special
859 * case for LOGO as a response to ADISC behavior.
860 */
861 mod_timer(&ndlp->nlp_delayfunc,
862 jiffies + msecs_to_jiffies(1000 * 1));
863 spin_lock_irq(&ndlp->lock);
864 ndlp->nlp_flag |= NLP_DELAY_TMO;
865 spin_unlock_irq(&ndlp->lock);
866
867 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
868 }
869 out:
870 /* Unregister from backend, could have been skipped due to ADISC */
871 lpfc_nlp_unreg_node(vport, ndlp);
872
873 ndlp->nlp_prev_state = ndlp->nlp_state;
874 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
875
876 spin_lock_irq(&ndlp->lock);
877 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
878 spin_unlock_irq(&ndlp->lock);
879 /* The driver has to wait until the ACC completes before it continues
880 * processing the LOGO. The action will resume in
881 * lpfc_cmpl_els_logo_acc routine. Since part of processing includes an
882 * unreg_login, the driver waits so the ACC does not get aborted.
883 */
884 return 0;
885 }
886
887 static uint32_t
lpfc_rcv_prli_support_check(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,struct lpfc_iocbq * cmdiocb)888 lpfc_rcv_prli_support_check(struct lpfc_vport *vport,
889 struct lpfc_nodelist *ndlp,
890 struct lpfc_iocbq *cmdiocb)
891 {
892 struct ls_rjt stat;
893 uint32_t *payload;
894 uint32_t cmd;
895
896 payload = ((struct lpfc_dmabuf *)cmdiocb->context2)->virt;
897 cmd = *payload;
898 if (vport->phba->nvmet_support) {
899 /* Must be a NVME PRLI */
900 if (cmd == ELS_CMD_PRLI)
901 goto out;
902 } else {
903 /* Initiator mode. */
904 if (!vport->nvmei_support && (cmd == ELS_CMD_NVMEPRLI))
905 goto out;
906 }
907 return 1;
908 out:
909 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NVME_DISC,
910 "6115 Rcv PRLI (%x) check failed: ndlp rpi %d "
911 "state x%x flags x%x\n",
912 cmd, ndlp->nlp_rpi, ndlp->nlp_state,
913 ndlp->nlp_flag);
914 memset(&stat, 0, sizeof(struct ls_rjt));
915 stat.un.b.lsRjtRsnCode = LSRJT_CMD_UNSUPPORTED;
916 stat.un.b.lsRjtRsnCodeExp = LSEXP_REQ_UNSUPPORTED;
917 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb,
918 ndlp, NULL);
919 return 0;
920 }
921
922 static void
lpfc_rcv_prli(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,struct lpfc_iocbq * cmdiocb)923 lpfc_rcv_prli(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
924 struct lpfc_iocbq *cmdiocb)
925 {
926 struct lpfc_hba *phba = vport->phba;
927 struct lpfc_dmabuf *pcmd;
928 uint32_t *lp;
929 PRLI *npr;
930 struct fc_rport *rport = ndlp->rport;
931 u32 roles;
932
933 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
934 lp = (uint32_t *) pcmd->virt;
935 npr = (PRLI *) ((uint8_t *) lp + sizeof (uint32_t));
936
937 if ((npr->prliType == PRLI_FCP_TYPE) ||
938 (npr->prliType == PRLI_NVME_TYPE)) {
939 if (npr->initiatorFunc) {
940 if (npr->prliType == PRLI_FCP_TYPE)
941 ndlp->nlp_type |= NLP_FCP_INITIATOR;
942 if (npr->prliType == PRLI_NVME_TYPE)
943 ndlp->nlp_type |= NLP_NVME_INITIATOR;
944 }
945 if (npr->targetFunc) {
946 if (npr->prliType == PRLI_FCP_TYPE)
947 ndlp->nlp_type |= NLP_FCP_TARGET;
948 if (npr->prliType == PRLI_NVME_TYPE)
949 ndlp->nlp_type |= NLP_NVME_TARGET;
950 if (npr->writeXferRdyDis)
951 ndlp->nlp_flag |= NLP_FIRSTBURST;
952 }
953 if (npr->Retry && ndlp->nlp_type &
954 (NLP_FCP_INITIATOR | NLP_FCP_TARGET))
955 ndlp->nlp_fcp_info |= NLP_FCP_2_DEVICE;
956
957 if (npr->Retry && phba->nsler &&
958 ndlp->nlp_type & (NLP_NVME_INITIATOR | NLP_NVME_TARGET))
959 ndlp->nlp_nvme_info |= NLP_NVME_NSLER;
960
961
962 /* If this driver is in nvme target mode, set the ndlp's fc4
963 * type to NVME provided the PRLI response claims NVME FC4
964 * type. Target mode does not issue gft_id so doesn't get
965 * the fc4 type set until now.
966 */
967 if (phba->nvmet_support && (npr->prliType == PRLI_NVME_TYPE)) {
968 ndlp->nlp_fc4_type |= NLP_FC4_NVME;
969 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
970 }
971
972 /* Fabric Controllers send FCP PRLI as an initiator but should
973 * not get recognized as FCP type and registered with transport.
974 */
975 if (npr->prliType == PRLI_FCP_TYPE &&
976 !(ndlp->nlp_type & NLP_FABRIC))
977 ndlp->nlp_fc4_type |= NLP_FC4_FCP;
978 }
979 if (rport) {
980 /* We need to update the rport role values */
981 roles = FC_RPORT_ROLE_UNKNOWN;
982 if (ndlp->nlp_type & NLP_FCP_INITIATOR)
983 roles |= FC_RPORT_ROLE_FCP_INITIATOR;
984 if (ndlp->nlp_type & NLP_FCP_TARGET)
985 roles |= FC_RPORT_ROLE_FCP_TARGET;
986
987 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
988 "rport rolechg: role:x%x did:x%x flg:x%x",
989 roles, ndlp->nlp_DID, ndlp->nlp_flag);
990
991 if (vport->cfg_enable_fc4_type != LPFC_ENABLE_NVME)
992 fc_remote_port_rolechg(rport, roles);
993 }
994 }
995
996 static uint32_t
lpfc_disc_set_adisc(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp)997 lpfc_disc_set_adisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
998 {
999 if (!(ndlp->nlp_flag & NLP_RPI_REGISTERED)) {
1000 spin_lock_irq(&ndlp->lock);
1001 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
1002 spin_unlock_irq(&ndlp->lock);
1003 return 0;
1004 }
1005
1006 if (!(vport->fc_flag & FC_PT2PT)) {
1007 /* Check config parameter use-adisc or FCP-2 */
1008 if (vport->cfg_use_adisc && ((vport->fc_flag & FC_RSCN_MODE) ||
1009 ((ndlp->nlp_fcp_info & NLP_FCP_2_DEVICE) &&
1010 (ndlp->nlp_type & NLP_FCP_TARGET)))) {
1011 spin_lock_irq(&ndlp->lock);
1012 ndlp->nlp_flag |= NLP_NPR_ADISC;
1013 spin_unlock_irq(&ndlp->lock);
1014 return 1;
1015 }
1016 }
1017
1018 spin_lock_irq(&ndlp->lock);
1019 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
1020 spin_unlock_irq(&ndlp->lock);
1021 lpfc_unreg_rpi(vport, ndlp);
1022 return 0;
1023 }
1024
1025 /**
1026 * lpfc_release_rpi - Release a RPI by issuing unreg_login mailbox cmd.
1027 * @phba : Pointer to lpfc_hba structure.
1028 * @vport: Pointer to lpfc_vport structure.
1029 * @ndlp: Pointer to lpfc_nodelist structure.
1030 * @rpi : rpi to be release.
1031 *
1032 * This function will send a unreg_login mailbox command to the firmware
1033 * to release a rpi.
1034 **/
1035 static void
lpfc_release_rpi(struct lpfc_hba * phba,struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,uint16_t rpi)1036 lpfc_release_rpi(struct lpfc_hba *phba, struct lpfc_vport *vport,
1037 struct lpfc_nodelist *ndlp, uint16_t rpi)
1038 {
1039 LPFC_MBOXQ_t *pmb;
1040 int rc;
1041
1042 /* If there is already an UNREG in progress for this ndlp,
1043 * no need to queue up another one.
1044 */
1045 if (ndlp->nlp_flag & NLP_UNREG_INP) {
1046 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
1047 "1435 release_rpi SKIP UNREG x%x on "
1048 "NPort x%x deferred x%x flg x%x "
1049 "Data: x%px\n",
1050 ndlp->nlp_rpi, ndlp->nlp_DID,
1051 ndlp->nlp_defer_did,
1052 ndlp->nlp_flag, ndlp);
1053 return;
1054 }
1055
1056 pmb = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool,
1057 GFP_KERNEL);
1058 if (!pmb)
1059 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
1060 "2796 mailbox memory allocation failed \n");
1061 else {
1062 lpfc_unreg_login(phba, vport->vpi, rpi, pmb);
1063 pmb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
1064 pmb->vport = vport;
1065 pmb->ctx_ndlp = lpfc_nlp_get(ndlp);
1066 if (!pmb->ctx_ndlp) {
1067 mempool_free(pmb, phba->mbox_mem_pool);
1068 return;
1069 }
1070
1071 if (((ndlp->nlp_DID & Fabric_DID_MASK) != Fabric_DID_MASK) &&
1072 (!(vport->fc_flag & FC_OFFLINE_MODE)))
1073 ndlp->nlp_flag |= NLP_UNREG_INP;
1074
1075 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
1076 "1437 release_rpi UNREG x%x "
1077 "on NPort x%x flg x%x\n",
1078 ndlp->nlp_rpi, ndlp->nlp_DID, ndlp->nlp_flag);
1079
1080 rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);
1081 if (rc == MBX_NOT_FINISHED)
1082 mempool_free(pmb, phba->mbox_mem_pool);
1083 }
1084 }
1085
1086 static uint32_t
lpfc_disc_illegal(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1087 lpfc_disc_illegal(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1088 void *arg, uint32_t evt)
1089 {
1090 struct lpfc_hba *phba;
1091 LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg;
1092 uint16_t rpi;
1093
1094 phba = vport->phba;
1095 /* Release the RPI if reglogin completing */
1096 if (!(phba->pport->load_flag & FC_UNLOADING) &&
1097 (evt == NLP_EVT_CMPL_REG_LOGIN) &&
1098 (!pmb->u.mb.mbxStatus)) {
1099 rpi = pmb->u.mb.un.varWords[0];
1100 lpfc_release_rpi(phba, vport, ndlp, rpi);
1101 }
1102 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
1103 "0271 Illegal State Transition: node x%x "
1104 "event x%x, state x%x Data: x%x x%x\n",
1105 ndlp->nlp_DID, evt, ndlp->nlp_state, ndlp->nlp_rpi,
1106 ndlp->nlp_flag);
1107 return ndlp->nlp_state;
1108 }
1109
1110 static uint32_t
lpfc_cmpl_plogi_illegal(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1111 lpfc_cmpl_plogi_illegal(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1112 void *arg, uint32_t evt)
1113 {
1114 /* This transition is only legal if we previously
1115 * rcv'ed a PLOGI. Since we don't want 2 discovery threads
1116 * working on the same NPortID, do nothing for this thread
1117 * to stop it.
1118 */
1119 if (!(ndlp->nlp_flag & NLP_RCV_PLOGI)) {
1120 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
1121 "0272 Illegal State Transition: node x%x "
1122 "event x%x, state x%x Data: x%x x%x\n",
1123 ndlp->nlp_DID, evt, ndlp->nlp_state,
1124 ndlp->nlp_rpi, ndlp->nlp_flag);
1125 }
1126 return ndlp->nlp_state;
1127 }
1128
1129 /* Start of Discovery State Machine routines */
1130
1131 static uint32_t
lpfc_rcv_plogi_unused_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1132 lpfc_rcv_plogi_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1133 void *arg, uint32_t evt)
1134 {
1135 struct lpfc_iocbq *cmdiocb;
1136
1137 cmdiocb = (struct lpfc_iocbq *) arg;
1138
1139 if (lpfc_rcv_plogi(vport, ndlp, cmdiocb)) {
1140 return ndlp->nlp_state;
1141 }
1142 return NLP_STE_FREED_NODE;
1143 }
1144
1145 static uint32_t
lpfc_rcv_els_unused_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1146 lpfc_rcv_els_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1147 void *arg, uint32_t evt)
1148 {
1149 lpfc_issue_els_logo(vport, ndlp, 0);
1150 return ndlp->nlp_state;
1151 }
1152
1153 static uint32_t
lpfc_rcv_logo_unused_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1154 lpfc_rcv_logo_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1155 void *arg, uint32_t evt)
1156 {
1157 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1158
1159 spin_lock_irq(&ndlp->lock);
1160 ndlp->nlp_flag |= NLP_LOGO_ACC;
1161 spin_unlock_irq(&ndlp->lock);
1162 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
1163
1164 return ndlp->nlp_state;
1165 }
1166
1167 static uint32_t
lpfc_cmpl_logo_unused_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1168 lpfc_cmpl_logo_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1169 void *arg, uint32_t evt)
1170 {
1171 return NLP_STE_FREED_NODE;
1172 }
1173
1174 static uint32_t
lpfc_device_rm_unused_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1175 lpfc_device_rm_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1176 void *arg, uint32_t evt)
1177 {
1178 return NLP_STE_FREED_NODE;
1179 }
1180
1181 static uint32_t
lpfc_device_recov_unused_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1182 lpfc_device_recov_unused_node(struct lpfc_vport *vport,
1183 struct lpfc_nodelist *ndlp,
1184 void *arg, uint32_t evt)
1185 {
1186 return ndlp->nlp_state;
1187 }
1188
1189 static uint32_t
lpfc_rcv_plogi_plogi_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1190 lpfc_rcv_plogi_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1191 void *arg, uint32_t evt)
1192 {
1193 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1194 struct lpfc_hba *phba = vport->phba;
1195 struct lpfc_iocbq *cmdiocb = arg;
1196 struct lpfc_dmabuf *pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
1197 uint32_t *lp = (uint32_t *) pcmd->virt;
1198 struct serv_parm *sp = (struct serv_parm *) (lp + 1);
1199 struct ls_rjt stat;
1200 int port_cmp;
1201
1202 memset(&stat, 0, sizeof (struct ls_rjt));
1203
1204 /* For a PLOGI, we only accept if our portname is less
1205 * than the remote portname.
1206 */
1207 phba->fc_stat.elsLogiCol++;
1208 port_cmp = memcmp(&vport->fc_portname, &sp->portName,
1209 sizeof(struct lpfc_name));
1210
1211 if (port_cmp >= 0) {
1212 /* Reject this request because the remote node will accept
1213 ours */
1214 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
1215 stat.un.b.lsRjtRsnCodeExp = LSEXP_CMD_IN_PROGRESS;
1216 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
1217 NULL);
1218 } else {
1219 if (lpfc_rcv_plogi(vport, ndlp, cmdiocb) &&
1220 (ndlp->nlp_flag & NLP_NPR_2B_DISC) &&
1221 (vport->num_disc_nodes)) {
1222 spin_lock_irq(&ndlp->lock);
1223 ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
1224 spin_unlock_irq(&ndlp->lock);
1225 /* Check if there are more PLOGIs to be sent */
1226 lpfc_more_plogi(vport);
1227 if (vport->num_disc_nodes == 0) {
1228 spin_lock_irq(shost->host_lock);
1229 vport->fc_flag &= ~FC_NDISC_ACTIVE;
1230 spin_unlock_irq(shost->host_lock);
1231 lpfc_can_disctmo(vport);
1232 lpfc_end_rscn(vport);
1233 }
1234 }
1235 } /* If our portname was less */
1236
1237 return ndlp->nlp_state;
1238 }
1239
1240 static uint32_t
lpfc_rcv_prli_plogi_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1241 lpfc_rcv_prli_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1242 void *arg, uint32_t evt)
1243 {
1244 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1245 struct ls_rjt stat;
1246
1247 memset(&stat, 0, sizeof (struct ls_rjt));
1248 stat.un.b.lsRjtRsnCode = LSRJT_LOGICAL_BSY;
1249 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
1250 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
1251 return ndlp->nlp_state;
1252 }
1253
1254 static uint32_t
lpfc_rcv_logo_plogi_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1255 lpfc_rcv_logo_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1256 void *arg, uint32_t evt)
1257 {
1258 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1259
1260 /* Retrieve RPI from LOGO IOCB. RPI is used for CMD_ABORT_XRI_CN */
1261 if (vport->phba->sli_rev == LPFC_SLI_REV3)
1262 ndlp->nlp_rpi = cmdiocb->iocb.ulpIoTag;
1263 /* software abort outstanding PLOGI */
1264 lpfc_els_abort(vport->phba, ndlp);
1265
1266 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1267 return ndlp->nlp_state;
1268 }
1269
1270 static uint32_t
lpfc_rcv_els_plogi_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1271 lpfc_rcv_els_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1272 void *arg, uint32_t evt)
1273 {
1274 struct lpfc_hba *phba = vport->phba;
1275 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1276
1277 /* software abort outstanding PLOGI */
1278 lpfc_els_abort(phba, ndlp);
1279
1280 if (evt == NLP_EVT_RCV_LOGO) {
1281 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
1282 } else {
1283 lpfc_issue_els_logo(vport, ndlp, 0);
1284 }
1285
1286 /* Put ndlp in npr state set plogi timer for 1 sec */
1287 mod_timer(&ndlp->nlp_delayfunc, jiffies + msecs_to_jiffies(1000 * 1));
1288 spin_lock_irq(&ndlp->lock);
1289 ndlp->nlp_flag |= NLP_DELAY_TMO;
1290 spin_unlock_irq(&ndlp->lock);
1291 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
1292 ndlp->nlp_prev_state = NLP_STE_PLOGI_ISSUE;
1293 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1294
1295 return ndlp->nlp_state;
1296 }
1297
1298 static uint32_t
lpfc_cmpl_plogi_plogi_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1299 lpfc_cmpl_plogi_plogi_issue(struct lpfc_vport *vport,
1300 struct lpfc_nodelist *ndlp,
1301 void *arg,
1302 uint32_t evt)
1303 {
1304 struct lpfc_hba *phba = vport->phba;
1305 struct lpfc_iocbq *cmdiocb, *rspiocb;
1306 struct lpfc_dmabuf *pcmd, *prsp, *mp;
1307 uint32_t *lp;
1308 uint32_t vid, flag;
1309 IOCB_t *irsp;
1310 struct serv_parm *sp;
1311 uint32_t ed_tov;
1312 LPFC_MBOXQ_t *mbox;
1313 int rc;
1314
1315 cmdiocb = (struct lpfc_iocbq *) arg;
1316 rspiocb = cmdiocb->context_un.rsp_iocb;
1317
1318 if (ndlp->nlp_flag & NLP_ACC_REGLOGIN) {
1319 /* Recovery from PLOGI collision logic */
1320 return ndlp->nlp_state;
1321 }
1322
1323 irsp = &rspiocb->iocb;
1324
1325 if (irsp->ulpStatus)
1326 goto out;
1327
1328 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
1329
1330 prsp = list_get_first(&pcmd->list, struct lpfc_dmabuf, list);
1331 if (!prsp)
1332 goto out;
1333
1334 lp = (uint32_t *) prsp->virt;
1335 sp = (struct serv_parm *) ((uint8_t *) lp + sizeof (uint32_t));
1336
1337 /* Some switches have FDMI servers returning 0 for WWN */
1338 if ((ndlp->nlp_DID != FDMI_DID) &&
1339 (wwn_to_u64(sp->portName.u.wwn) == 0 ||
1340 wwn_to_u64(sp->nodeName.u.wwn) == 0)) {
1341 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
1342 "0142 PLOGI RSP: Invalid WWN.\n");
1343 goto out;
1344 }
1345 if (!lpfc_check_sparm(vport, ndlp, sp, CLASS3, 0))
1346 goto out;
1347 /* PLOGI chkparm OK */
1348 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
1349 "0121 PLOGI chkparm OK Data: x%x x%x x%x x%x\n",
1350 ndlp->nlp_DID, ndlp->nlp_state,
1351 ndlp->nlp_flag, ndlp->nlp_rpi);
1352 if (vport->cfg_fcp_class == 2 && (sp->cls2.classValid))
1353 ndlp->nlp_fcp_info |= CLASS2;
1354 else
1355 ndlp->nlp_fcp_info |= CLASS3;
1356
1357 ndlp->nlp_class_sup = 0;
1358 if (sp->cls1.classValid)
1359 ndlp->nlp_class_sup |= FC_COS_CLASS1;
1360 if (sp->cls2.classValid)
1361 ndlp->nlp_class_sup |= FC_COS_CLASS2;
1362 if (sp->cls3.classValid)
1363 ndlp->nlp_class_sup |= FC_COS_CLASS3;
1364 if (sp->cls4.classValid)
1365 ndlp->nlp_class_sup |= FC_COS_CLASS4;
1366 ndlp->nlp_maxframe =
1367 ((sp->cmn.bbRcvSizeMsb & 0x0F) << 8) | sp->cmn.bbRcvSizeLsb;
1368
1369 if ((vport->fc_flag & FC_PT2PT) &&
1370 (vport->fc_flag & FC_PT2PT_PLOGI)) {
1371 ed_tov = be32_to_cpu(sp->cmn.e_d_tov);
1372 if (sp->cmn.edtovResolution) {
1373 /* E_D_TOV ticks are in nanoseconds */
1374 ed_tov = (phba->fc_edtov + 999999) / 1000000;
1375 }
1376
1377 ndlp->nlp_flag &= ~NLP_SUPPRESS_RSP;
1378 if ((phba->sli.sli_flag & LPFC_SLI_SUPPRESS_RSP) &&
1379 sp->cmn.valid_vendor_ver_level) {
1380 vid = be32_to_cpu(sp->un.vv.vid);
1381 flag = be32_to_cpu(sp->un.vv.flags);
1382 if ((vid == LPFC_VV_EMLX_ID) &&
1383 (flag & LPFC_VV_SUPPRESS_RSP))
1384 ndlp->nlp_flag |= NLP_SUPPRESS_RSP;
1385 }
1386
1387 /*
1388 * Use the larger EDTOV
1389 * RATOV = 2 * EDTOV for pt-to-pt
1390 */
1391 if (ed_tov > phba->fc_edtov)
1392 phba->fc_edtov = ed_tov;
1393 phba->fc_ratov = (2 * phba->fc_edtov) / 1000;
1394
1395 memcpy(&phba->fc_fabparam, sp, sizeof(struct serv_parm));
1396
1397 /* Issue config_link / reg_vfi to account for updated TOV's */
1398 if (phba->sli_rev == LPFC_SLI_REV4) {
1399 lpfc_issue_reg_vfi(vport);
1400 } else {
1401 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1402 if (!mbox) {
1403 lpfc_printf_vlog(vport, KERN_ERR,
1404 LOG_TRACE_EVENT,
1405 "0133 PLOGI: no memory "
1406 "for config_link "
1407 "Data: x%x x%x x%x x%x\n",
1408 ndlp->nlp_DID, ndlp->nlp_state,
1409 ndlp->nlp_flag, ndlp->nlp_rpi);
1410 goto out;
1411 }
1412
1413 lpfc_config_link(phba, mbox);
1414
1415 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
1416 mbox->vport = vport;
1417 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
1418 if (rc == MBX_NOT_FINISHED) {
1419 mempool_free(mbox, phba->mbox_mem_pool);
1420 goto out;
1421 }
1422 }
1423 }
1424
1425 lpfc_unreg_rpi(vport, ndlp);
1426
1427 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1428 if (!mbox) {
1429 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
1430 "0018 PLOGI: no memory for reg_login "
1431 "Data: x%x x%x x%x x%x\n",
1432 ndlp->nlp_DID, ndlp->nlp_state,
1433 ndlp->nlp_flag, ndlp->nlp_rpi);
1434 goto out;
1435 }
1436
1437 if (lpfc_reg_rpi(phba, vport->vpi, irsp->un.elsreq64.remoteID,
1438 (uint8_t *) sp, mbox, ndlp->nlp_rpi) == 0) {
1439 switch (ndlp->nlp_DID) {
1440 case NameServer_DID:
1441 mbox->mbox_cmpl = lpfc_mbx_cmpl_ns_reg_login;
1442 /* Fabric Controller Node needs these parameters. */
1443 memcpy(&ndlp->fc_sparam, sp, sizeof(struct serv_parm));
1444 break;
1445 case FDMI_DID:
1446 mbox->mbox_cmpl = lpfc_mbx_cmpl_fdmi_reg_login;
1447 break;
1448 default:
1449 ndlp->nlp_flag |= NLP_REG_LOGIN_SEND;
1450 mbox->mbox_cmpl = lpfc_mbx_cmpl_reg_login;
1451 }
1452
1453 mbox->ctx_ndlp = lpfc_nlp_get(ndlp);
1454 if (!mbox->ctx_ndlp)
1455 goto out;
1456
1457 mbox->vport = vport;
1458 if (lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT)
1459 != MBX_NOT_FINISHED) {
1460 lpfc_nlp_set_state(vport, ndlp,
1461 NLP_STE_REG_LOGIN_ISSUE);
1462 return ndlp->nlp_state;
1463 }
1464 if (ndlp->nlp_flag & NLP_REG_LOGIN_SEND)
1465 ndlp->nlp_flag &= ~NLP_REG_LOGIN_SEND;
1466 /* decrement node reference count to the failed mbox
1467 * command
1468 */
1469 lpfc_nlp_put(ndlp);
1470 mp = (struct lpfc_dmabuf *)mbox->ctx_buf;
1471 lpfc_mbuf_free(phba, mp->virt, mp->phys);
1472 kfree(mp);
1473 mempool_free(mbox, phba->mbox_mem_pool);
1474
1475 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
1476 "0134 PLOGI: cannot issue reg_login "
1477 "Data: x%x x%x x%x x%x\n",
1478 ndlp->nlp_DID, ndlp->nlp_state,
1479 ndlp->nlp_flag, ndlp->nlp_rpi);
1480 } else {
1481 mempool_free(mbox, phba->mbox_mem_pool);
1482
1483 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
1484 "0135 PLOGI: cannot format reg_login "
1485 "Data: x%x x%x x%x x%x\n",
1486 ndlp->nlp_DID, ndlp->nlp_state,
1487 ndlp->nlp_flag, ndlp->nlp_rpi);
1488 }
1489
1490
1491 out:
1492 if (ndlp->nlp_DID == NameServer_DID) {
1493 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
1494 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
1495 "0261 Cannot Register NameServer login\n");
1496 }
1497
1498 /*
1499 ** In case the node reference counter does not go to zero, ensure that
1500 ** the stale state for the node is not processed.
1501 */
1502
1503 ndlp->nlp_prev_state = ndlp->nlp_state;
1504 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1505 return NLP_STE_FREED_NODE;
1506 }
1507
1508 static uint32_t
lpfc_cmpl_logo_plogi_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1509 lpfc_cmpl_logo_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1510 void *arg, uint32_t evt)
1511 {
1512 return ndlp->nlp_state;
1513 }
1514
1515 static uint32_t
lpfc_cmpl_reglogin_plogi_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1516 lpfc_cmpl_reglogin_plogi_issue(struct lpfc_vport *vport,
1517 struct lpfc_nodelist *ndlp, void *arg, uint32_t evt)
1518 {
1519 struct lpfc_hba *phba;
1520 LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg;
1521 MAILBOX_t *mb = &pmb->u.mb;
1522 uint16_t rpi;
1523
1524 phba = vport->phba;
1525 /* Release the RPI */
1526 if (!(phba->pport->load_flag & FC_UNLOADING) &&
1527 !mb->mbxStatus) {
1528 rpi = pmb->u.mb.un.varWords[0];
1529 lpfc_release_rpi(phba, vport, ndlp, rpi);
1530 }
1531 return ndlp->nlp_state;
1532 }
1533
1534 static uint32_t
lpfc_device_rm_plogi_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1535 lpfc_device_rm_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1536 void *arg, uint32_t evt)
1537 {
1538 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1539 spin_lock_irq(&ndlp->lock);
1540 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1541 spin_unlock_irq(&ndlp->lock);
1542 return ndlp->nlp_state;
1543 } else {
1544 /* software abort outstanding PLOGI */
1545 lpfc_els_abort(vport->phba, ndlp);
1546
1547 lpfc_drop_node(vport, ndlp);
1548 return NLP_STE_FREED_NODE;
1549 }
1550 }
1551
1552 static uint32_t
lpfc_device_recov_plogi_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1553 lpfc_device_recov_plogi_issue(struct lpfc_vport *vport,
1554 struct lpfc_nodelist *ndlp,
1555 void *arg,
1556 uint32_t evt)
1557 {
1558 struct lpfc_hba *phba = vport->phba;
1559
1560 /* Don't do anything that will mess up processing of the
1561 * previous RSCN.
1562 */
1563 if (vport->fc_flag & FC_RSCN_DEFERRED)
1564 return ndlp->nlp_state;
1565
1566 /* software abort outstanding PLOGI */
1567 lpfc_els_abort(phba, ndlp);
1568
1569 ndlp->nlp_prev_state = NLP_STE_PLOGI_ISSUE;
1570 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1571 spin_lock_irq(&ndlp->lock);
1572 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1573 spin_unlock_irq(&ndlp->lock);
1574
1575 return ndlp->nlp_state;
1576 }
1577
1578 static uint32_t
lpfc_rcv_plogi_adisc_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1579 lpfc_rcv_plogi_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1580 void *arg, uint32_t evt)
1581 {
1582 struct lpfc_hba *phba = vport->phba;
1583 struct lpfc_iocbq *cmdiocb;
1584
1585 /* software abort outstanding ADISC */
1586 lpfc_els_abort(phba, ndlp);
1587
1588 cmdiocb = (struct lpfc_iocbq *) arg;
1589
1590 if (lpfc_rcv_plogi(vport, ndlp, cmdiocb)) {
1591 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1592 spin_lock_irq(&ndlp->lock);
1593 ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
1594 spin_unlock_irq(&ndlp->lock);
1595 if (vport->num_disc_nodes)
1596 lpfc_more_adisc(vport);
1597 }
1598 return ndlp->nlp_state;
1599 }
1600 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1601 lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
1602 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
1603
1604 return ndlp->nlp_state;
1605 }
1606
1607 static uint32_t
lpfc_rcv_prli_adisc_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1608 lpfc_rcv_prli_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1609 void *arg, uint32_t evt)
1610 {
1611 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1612
1613 if (lpfc_rcv_prli_support_check(vport, ndlp, cmdiocb))
1614 lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1615 return ndlp->nlp_state;
1616 }
1617
1618 static uint32_t
lpfc_rcv_logo_adisc_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1619 lpfc_rcv_logo_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1620 void *arg, uint32_t evt)
1621 {
1622 struct lpfc_hba *phba = vport->phba;
1623 struct lpfc_iocbq *cmdiocb;
1624
1625 cmdiocb = (struct lpfc_iocbq *) arg;
1626
1627 /* software abort outstanding ADISC */
1628 lpfc_els_abort(phba, ndlp);
1629
1630 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1631 return ndlp->nlp_state;
1632 }
1633
1634 static uint32_t
lpfc_rcv_padisc_adisc_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1635 lpfc_rcv_padisc_adisc_issue(struct lpfc_vport *vport,
1636 struct lpfc_nodelist *ndlp,
1637 void *arg, uint32_t evt)
1638 {
1639 struct lpfc_iocbq *cmdiocb;
1640
1641 cmdiocb = (struct lpfc_iocbq *) arg;
1642
1643 lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1644 return ndlp->nlp_state;
1645 }
1646
1647 static uint32_t
lpfc_rcv_prlo_adisc_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1648 lpfc_rcv_prlo_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1649 void *arg, uint32_t evt)
1650 {
1651 struct lpfc_iocbq *cmdiocb;
1652
1653 cmdiocb = (struct lpfc_iocbq *) arg;
1654
1655 /* Treat like rcv logo */
1656 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_PRLO);
1657 return ndlp->nlp_state;
1658 }
1659
1660 static uint32_t
lpfc_cmpl_adisc_adisc_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1661 lpfc_cmpl_adisc_adisc_issue(struct lpfc_vport *vport,
1662 struct lpfc_nodelist *ndlp,
1663 void *arg, uint32_t evt)
1664 {
1665 struct lpfc_hba *phba = vport->phba;
1666 struct lpfc_iocbq *cmdiocb, *rspiocb;
1667 IOCB_t *irsp;
1668 ADISC *ap;
1669 int rc;
1670
1671 cmdiocb = (struct lpfc_iocbq *) arg;
1672 rspiocb = cmdiocb->context_un.rsp_iocb;
1673
1674 ap = (ADISC *)lpfc_check_elscmpl_iocb(phba, cmdiocb, rspiocb);
1675 irsp = &rspiocb->iocb;
1676
1677 if ((irsp->ulpStatus) ||
1678 (!lpfc_check_adisc(vport, ndlp, &ap->nodeName, &ap->portName))) {
1679 /* 1 sec timeout */
1680 mod_timer(&ndlp->nlp_delayfunc,
1681 jiffies + msecs_to_jiffies(1000));
1682 spin_lock_irq(&ndlp->lock);
1683 ndlp->nlp_flag |= NLP_DELAY_TMO;
1684 spin_unlock_irq(&ndlp->lock);
1685 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
1686
1687 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1688 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1689 lpfc_unreg_rpi(vport, ndlp);
1690 return ndlp->nlp_state;
1691 }
1692
1693 if (phba->sli_rev == LPFC_SLI_REV4) {
1694 rc = lpfc_sli4_resume_rpi(ndlp, NULL, NULL);
1695 if (rc) {
1696 /* Stay in state and retry. */
1697 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1698 return ndlp->nlp_state;
1699 }
1700 }
1701
1702 if (ndlp->nlp_type & NLP_FCP_TARGET)
1703 ndlp->nlp_fc4_type |= NLP_FC4_FCP;
1704
1705 if (ndlp->nlp_type & NLP_NVME_TARGET)
1706 ndlp->nlp_fc4_type |= NLP_FC4_NVME;
1707
1708 if (ndlp->nlp_type & (NLP_FCP_TARGET | NLP_NVME_TARGET)) {
1709 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1710 lpfc_nlp_set_state(vport, ndlp, NLP_STE_MAPPED_NODE);
1711 } else {
1712 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1713 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1714 }
1715
1716 return ndlp->nlp_state;
1717 }
1718
1719 static uint32_t
lpfc_device_rm_adisc_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1720 lpfc_device_rm_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1721 void *arg, uint32_t evt)
1722 {
1723 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1724 spin_lock_irq(&ndlp->lock);
1725 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1726 spin_unlock_irq(&ndlp->lock);
1727 return ndlp->nlp_state;
1728 } else {
1729 /* software abort outstanding ADISC */
1730 lpfc_els_abort(vport->phba, ndlp);
1731
1732 lpfc_drop_node(vport, ndlp);
1733 return NLP_STE_FREED_NODE;
1734 }
1735 }
1736
1737 static uint32_t
lpfc_device_recov_adisc_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1738 lpfc_device_recov_adisc_issue(struct lpfc_vport *vport,
1739 struct lpfc_nodelist *ndlp,
1740 void *arg,
1741 uint32_t evt)
1742 {
1743 struct lpfc_hba *phba = vport->phba;
1744
1745 /* Don't do anything that will mess up processing of the
1746 * previous RSCN.
1747 */
1748 if (vport->fc_flag & FC_RSCN_DEFERRED)
1749 return ndlp->nlp_state;
1750
1751 /* software abort outstanding ADISC */
1752 lpfc_els_abort(phba, ndlp);
1753
1754 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1755 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1756 spin_lock_irq(&ndlp->lock);
1757 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1758 spin_unlock_irq(&ndlp->lock);
1759 lpfc_disc_set_adisc(vport, ndlp);
1760 return ndlp->nlp_state;
1761 }
1762
1763 static uint32_t
lpfc_rcv_plogi_reglogin_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1764 lpfc_rcv_plogi_reglogin_issue(struct lpfc_vport *vport,
1765 struct lpfc_nodelist *ndlp,
1766 void *arg,
1767 uint32_t evt)
1768 {
1769 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1770
1771 lpfc_rcv_plogi(vport, ndlp, cmdiocb);
1772 return ndlp->nlp_state;
1773 }
1774
1775 static uint32_t
lpfc_rcv_prli_reglogin_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1776 lpfc_rcv_prli_reglogin_issue(struct lpfc_vport *vport,
1777 struct lpfc_nodelist *ndlp,
1778 void *arg,
1779 uint32_t evt)
1780 {
1781 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1782 struct ls_rjt stat;
1783
1784 if (!lpfc_rcv_prli_support_check(vport, ndlp, cmdiocb)) {
1785 return ndlp->nlp_state;
1786 }
1787 if (vport->phba->nvmet_support) {
1788 /* NVME Target mode. Handle and respond to the PRLI and
1789 * transition to UNMAPPED provided the RPI has completed
1790 * registration.
1791 */
1792 if (ndlp->nlp_flag & NLP_RPI_REGISTERED) {
1793 lpfc_rcv_prli(vport, ndlp, cmdiocb);
1794 lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1795 } else {
1796 /* RPI registration has not completed. Reject the PRLI
1797 * to prevent an illegal state transition when the
1798 * rpi registration does complete.
1799 */
1800 memset(&stat, 0, sizeof(struct ls_rjt));
1801 stat.un.b.lsRjtRsnCode = LSRJT_LOGICAL_BSY;
1802 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
1803 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb,
1804 ndlp, NULL);
1805 return ndlp->nlp_state;
1806 }
1807 } else {
1808 /* Initiator mode. */
1809 lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1810 }
1811 return ndlp->nlp_state;
1812 }
1813
1814 static uint32_t
lpfc_rcv_logo_reglogin_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1815 lpfc_rcv_logo_reglogin_issue(struct lpfc_vport *vport,
1816 struct lpfc_nodelist *ndlp,
1817 void *arg,
1818 uint32_t evt)
1819 {
1820 struct lpfc_hba *phba = vport->phba;
1821 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1822 LPFC_MBOXQ_t *mb;
1823 LPFC_MBOXQ_t *nextmb;
1824 struct lpfc_dmabuf *mp;
1825 struct lpfc_nodelist *ns_ndlp;
1826
1827 cmdiocb = (struct lpfc_iocbq *) arg;
1828
1829 /* cleanup any ndlp on mbox q waiting for reglogin cmpl */
1830 if ((mb = phba->sli.mbox_active)) {
1831 if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) &&
1832 (ndlp == (struct lpfc_nodelist *)mb->ctx_ndlp)) {
1833 ndlp->nlp_flag &= ~NLP_REG_LOGIN_SEND;
1834 lpfc_nlp_put(ndlp);
1835 mb->ctx_ndlp = NULL;
1836 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
1837 }
1838 }
1839
1840 spin_lock_irq(&phba->hbalock);
1841 list_for_each_entry_safe(mb, nextmb, &phba->sli.mboxq, list) {
1842 if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) &&
1843 (ndlp == (struct lpfc_nodelist *)mb->ctx_ndlp)) {
1844 mp = (struct lpfc_dmabuf *)(mb->ctx_buf);
1845 if (mp) {
1846 __lpfc_mbuf_free(phba, mp->virt, mp->phys);
1847 kfree(mp);
1848 }
1849 ndlp->nlp_flag &= ~NLP_REG_LOGIN_SEND;
1850 lpfc_nlp_put(ndlp);
1851 list_del(&mb->list);
1852 phba->sli.mboxq_cnt--;
1853 mempool_free(mb, phba->mbox_mem_pool);
1854 }
1855 }
1856 spin_unlock_irq(&phba->hbalock);
1857
1858 /* software abort if any GID_FT is outstanding */
1859 if (vport->cfg_enable_fc4_type != LPFC_ENABLE_FCP) {
1860 ns_ndlp = lpfc_findnode_did(vport, NameServer_DID);
1861 if (ns_ndlp)
1862 lpfc_els_abort(phba, ns_ndlp);
1863 }
1864
1865 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1866 return ndlp->nlp_state;
1867 }
1868
1869 static uint32_t
lpfc_rcv_padisc_reglogin_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1870 lpfc_rcv_padisc_reglogin_issue(struct lpfc_vport *vport,
1871 struct lpfc_nodelist *ndlp,
1872 void *arg,
1873 uint32_t evt)
1874 {
1875 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1876
1877 lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1878 return ndlp->nlp_state;
1879 }
1880
1881 static uint32_t
lpfc_rcv_prlo_reglogin_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1882 lpfc_rcv_prlo_reglogin_issue(struct lpfc_vport *vport,
1883 struct lpfc_nodelist *ndlp,
1884 void *arg,
1885 uint32_t evt)
1886 {
1887 struct lpfc_iocbq *cmdiocb;
1888
1889 cmdiocb = (struct lpfc_iocbq *) arg;
1890 lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
1891 return ndlp->nlp_state;
1892 }
1893
1894 static uint32_t
lpfc_cmpl_reglogin_reglogin_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1895 lpfc_cmpl_reglogin_reglogin_issue(struct lpfc_vport *vport,
1896 struct lpfc_nodelist *ndlp,
1897 void *arg,
1898 uint32_t evt)
1899 {
1900 struct lpfc_hba *phba = vport->phba;
1901 LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg;
1902 MAILBOX_t *mb = &pmb->u.mb;
1903 uint32_t did = mb->un.varWords[1];
1904
1905 if (mb->mbxStatus) {
1906 /* RegLogin failed */
1907 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
1908 "0246 RegLogin failed Data: x%x x%x x%x x%x "
1909 "x%x\n",
1910 did, mb->mbxStatus, vport->port_state,
1911 mb->un.varRegLogin.vpi,
1912 mb->un.varRegLogin.rpi);
1913 /*
1914 * If RegLogin failed due to lack of HBA resources do not
1915 * retry discovery.
1916 */
1917 if (mb->mbxStatus == MBXERR_RPI_FULL) {
1918 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1919 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1920 return ndlp->nlp_state;
1921 }
1922
1923 /* Put ndlp in npr state set plogi timer for 1 sec */
1924 mod_timer(&ndlp->nlp_delayfunc,
1925 jiffies + msecs_to_jiffies(1000 * 1));
1926 spin_lock_irq(&ndlp->lock);
1927 ndlp->nlp_flag |= NLP_DELAY_TMO;
1928 spin_unlock_irq(&ndlp->lock);
1929 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
1930
1931 lpfc_issue_els_logo(vport, ndlp, 0);
1932 return ndlp->nlp_state;
1933 }
1934
1935 /* SLI4 ports have preallocated logical rpis. */
1936 if (phba->sli_rev < LPFC_SLI_REV4)
1937 ndlp->nlp_rpi = mb->un.varWords[0];
1938
1939 ndlp->nlp_flag |= NLP_RPI_REGISTERED;
1940
1941 /* Only if we are not a fabric nport do we issue PRLI */
1942 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
1943 "3066 RegLogin Complete on x%x x%x x%x\n",
1944 did, ndlp->nlp_type, ndlp->nlp_fc4_type);
1945 if (!(ndlp->nlp_type & NLP_FABRIC) &&
1946 (phba->nvmet_support == 0)) {
1947 /* The driver supports FCP and NVME concurrently. If the
1948 * ndlp's nlp_fc4_type is still zero, the driver doesn't
1949 * know what PRLI to send yet. Figure that out now and
1950 * call PRLI depending on the outcome.
1951 */
1952 if (vport->fc_flag & FC_PT2PT) {
1953 /* If we are pt2pt, there is no Fabric to determine
1954 * the FC4 type of the remote nport. So if NVME
1955 * is configured try it.
1956 */
1957 ndlp->nlp_fc4_type |= NLP_FC4_FCP;
1958 if ((vport->cfg_enable_fc4_type == LPFC_ENABLE_BOTH) ||
1959 (vport->cfg_enable_fc4_type == LPFC_ENABLE_NVME)) {
1960 ndlp->nlp_fc4_type |= NLP_FC4_NVME;
1961 /* We need to update the localport also */
1962 lpfc_nvme_update_localport(vport);
1963 }
1964
1965 } else if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
1966 ndlp->nlp_fc4_type |= NLP_FC4_FCP;
1967
1968 } else if (ndlp->nlp_fc4_type == 0) {
1969 /* If we are only configured for FCP, the driver
1970 * should just issue PRLI for FCP. Otherwise issue
1971 * GFT_ID to determine if remote port supports NVME.
1972 */
1973 if (vport->cfg_enable_fc4_type != LPFC_ENABLE_FCP) {
1974 lpfc_ns_cmd(vport, SLI_CTNS_GFT_ID, 0,
1975 ndlp->nlp_DID);
1976 return ndlp->nlp_state;
1977 }
1978 ndlp->nlp_fc4_type = NLP_FC4_FCP;
1979 }
1980
1981 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1982 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PRLI_ISSUE);
1983 if (lpfc_issue_els_prli(vport, ndlp, 0)) {
1984 lpfc_issue_els_logo(vport, ndlp, 0);
1985 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1986 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1987 }
1988 } else {
1989 if ((vport->fc_flag & FC_PT2PT) && phba->nvmet_support)
1990 phba->targetport->port_id = vport->fc_myDID;
1991
1992 /* Only Fabric ports should transition. NVME target
1993 * must complete PRLI.
1994 */
1995 if (ndlp->nlp_type & NLP_FABRIC) {
1996 ndlp->nlp_fc4_type &= ~NLP_FC4_FCP;
1997 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1998 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1999 }
2000 }
2001 return ndlp->nlp_state;
2002 }
2003
2004 static uint32_t
lpfc_device_rm_reglogin_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2005 lpfc_device_rm_reglogin_issue(struct lpfc_vport *vport,
2006 struct lpfc_nodelist *ndlp,
2007 void *arg,
2008 uint32_t evt)
2009 {
2010 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
2011 spin_lock_irq(&ndlp->lock);
2012 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
2013 spin_unlock_irq(&ndlp->lock);
2014 return ndlp->nlp_state;
2015 } else {
2016 lpfc_drop_node(vport, ndlp);
2017 return NLP_STE_FREED_NODE;
2018 }
2019 }
2020
2021 static uint32_t
lpfc_device_recov_reglogin_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2022 lpfc_device_recov_reglogin_issue(struct lpfc_vport *vport,
2023 struct lpfc_nodelist *ndlp,
2024 void *arg,
2025 uint32_t evt)
2026 {
2027 /* Don't do anything that will mess up processing of the
2028 * previous RSCN.
2029 */
2030 if (vport->fc_flag & FC_RSCN_DEFERRED)
2031 return ndlp->nlp_state;
2032
2033 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
2034 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
2035 spin_lock_irq(&ndlp->lock);
2036
2037 /* If we are a target we won't immediately transition into PRLI,
2038 * so if REG_LOGIN already completed we don't need to ignore it.
2039 */
2040 if (!(ndlp->nlp_flag & NLP_RPI_REGISTERED) ||
2041 !vport->phba->nvmet_support)
2042 ndlp->nlp_flag |= NLP_IGNR_REG_CMPL;
2043
2044 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
2045 spin_unlock_irq(&ndlp->lock);
2046 lpfc_disc_set_adisc(vport, ndlp);
2047 return ndlp->nlp_state;
2048 }
2049
2050 static uint32_t
lpfc_rcv_plogi_prli_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2051 lpfc_rcv_plogi_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2052 void *arg, uint32_t evt)
2053 {
2054 struct lpfc_iocbq *cmdiocb;
2055
2056 cmdiocb = (struct lpfc_iocbq *) arg;
2057
2058 lpfc_rcv_plogi(vport, ndlp, cmdiocb);
2059 return ndlp->nlp_state;
2060 }
2061
2062 static uint32_t
lpfc_rcv_prli_prli_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2063 lpfc_rcv_prli_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2064 void *arg, uint32_t evt)
2065 {
2066 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2067
2068 if (!lpfc_rcv_prli_support_check(vport, ndlp, cmdiocb))
2069 return ndlp->nlp_state;
2070 lpfc_rcv_prli(vport, ndlp, cmdiocb);
2071 lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
2072 return ndlp->nlp_state;
2073 }
2074
2075 static uint32_t
lpfc_rcv_logo_prli_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2076 lpfc_rcv_logo_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2077 void *arg, uint32_t evt)
2078 {
2079 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2080
2081 /* Software abort outstanding PRLI before sending acc */
2082 lpfc_els_abort(vport->phba, ndlp);
2083
2084 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
2085 return ndlp->nlp_state;
2086 }
2087
2088 static uint32_t
lpfc_rcv_padisc_prli_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2089 lpfc_rcv_padisc_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2090 void *arg, uint32_t evt)
2091 {
2092 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2093
2094 lpfc_rcv_padisc(vport, ndlp, cmdiocb);
2095 return ndlp->nlp_state;
2096 }
2097
2098 /* This routine is envoked when we rcv a PRLO request from a nport
2099 * we are logged into. We should send back a PRLO rsp setting the
2100 * appropriate bits.
2101 * NEXT STATE = PRLI_ISSUE
2102 */
2103 static uint32_t
lpfc_rcv_prlo_prli_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2104 lpfc_rcv_prlo_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2105 void *arg, uint32_t evt)
2106 {
2107 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2108
2109 lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
2110 return ndlp->nlp_state;
2111 }
2112
2113 static uint32_t
lpfc_cmpl_prli_prli_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2114 lpfc_cmpl_prli_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2115 void *arg, uint32_t evt)
2116 {
2117 struct lpfc_iocbq *cmdiocb, *rspiocb;
2118 struct lpfc_hba *phba = vport->phba;
2119 IOCB_t *irsp;
2120 PRLI *npr;
2121 struct lpfc_nvme_prli *nvpr;
2122 void *temp_ptr;
2123
2124 cmdiocb = (struct lpfc_iocbq *) arg;
2125 rspiocb = cmdiocb->context_un.rsp_iocb;
2126
2127 /* A solicited PRLI is either FCP or NVME. The PRLI cmd/rsp
2128 * format is different so NULL the two PRLI types so that the
2129 * driver correctly gets the correct context.
2130 */
2131 npr = NULL;
2132 nvpr = NULL;
2133 temp_ptr = lpfc_check_elscmpl_iocb(phba, cmdiocb, rspiocb);
2134 if (cmdiocb->iocb_flag & LPFC_PRLI_FCP_REQ)
2135 npr = (PRLI *) temp_ptr;
2136 else if (cmdiocb->iocb_flag & LPFC_PRLI_NVME_REQ)
2137 nvpr = (struct lpfc_nvme_prli *) temp_ptr;
2138
2139 irsp = &rspiocb->iocb;
2140 if (irsp->ulpStatus) {
2141 if ((vport->port_type == LPFC_NPIV_PORT) &&
2142 vport->cfg_restrict_login) {
2143 goto out;
2144 }
2145
2146 /* Adjust the nlp_type accordingly if the PRLI failed */
2147 if (npr)
2148 ndlp->nlp_fc4_type &= ~NLP_FC4_FCP;
2149 if (nvpr)
2150 ndlp->nlp_fc4_type &= ~NLP_FC4_NVME;
2151
2152 /* We can't set the DSM state till BOTH PRLIs complete */
2153 goto out_err;
2154 }
2155
2156 if (npr && (npr->acceptRspCode == PRLI_REQ_EXECUTED) &&
2157 (npr->prliType == PRLI_FCP_TYPE)) {
2158 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_DISC,
2159 "6028 FCP NPR PRLI Cmpl Init %d Target %d\n",
2160 npr->initiatorFunc,
2161 npr->targetFunc);
2162 if (npr->initiatorFunc)
2163 ndlp->nlp_type |= NLP_FCP_INITIATOR;
2164 if (npr->targetFunc) {
2165 ndlp->nlp_type |= NLP_FCP_TARGET;
2166 if (npr->writeXferRdyDis)
2167 ndlp->nlp_flag |= NLP_FIRSTBURST;
2168 }
2169 if (npr->Retry)
2170 ndlp->nlp_fcp_info |= NLP_FCP_2_DEVICE;
2171
2172 } else if (nvpr &&
2173 (bf_get_be32(prli_acc_rsp_code, nvpr) ==
2174 PRLI_REQ_EXECUTED) &&
2175 (bf_get_be32(prli_type_code, nvpr) ==
2176 PRLI_NVME_TYPE)) {
2177
2178 /* Complete setting up the remote ndlp personality. */
2179 if (bf_get_be32(prli_init, nvpr))
2180 ndlp->nlp_type |= NLP_NVME_INITIATOR;
2181
2182 if (phba->nsler && bf_get_be32(prli_nsler, nvpr) &&
2183 bf_get_be32(prli_conf, nvpr))
2184
2185 ndlp->nlp_nvme_info |= NLP_NVME_NSLER;
2186 else
2187 ndlp->nlp_nvme_info &= ~NLP_NVME_NSLER;
2188
2189 /* Target driver cannot solicit NVME FB. */
2190 if (bf_get_be32(prli_tgt, nvpr)) {
2191 /* Complete the nvme target roles. The transport
2192 * needs to know if the rport is capable of
2193 * discovery in addition to its role.
2194 */
2195 ndlp->nlp_type |= NLP_NVME_TARGET;
2196 if (bf_get_be32(prli_disc, nvpr))
2197 ndlp->nlp_type |= NLP_NVME_DISCOVERY;
2198
2199 /*
2200 * If prli_fba is set, the Target supports FirstBurst.
2201 * If prli_fb_sz is 0, the FirstBurst size is unlimited,
2202 * otherwise it defines the actual size supported by
2203 * the NVME Target.
2204 */
2205 if ((bf_get_be32(prli_fba, nvpr) == 1) &&
2206 (phba->cfg_nvme_enable_fb) &&
2207 (!phba->nvmet_support)) {
2208 /* Both sides support FB. The target's first
2209 * burst size is a 512 byte encoded value.
2210 */
2211 ndlp->nlp_flag |= NLP_FIRSTBURST;
2212 ndlp->nvme_fb_size = bf_get_be32(prli_fb_sz,
2213 nvpr);
2214
2215 /* Expressed in units of 512 bytes */
2216 if (ndlp->nvme_fb_size)
2217 ndlp->nvme_fb_size <<=
2218 LPFC_NVME_FB_SHIFT;
2219 else
2220 ndlp->nvme_fb_size = LPFC_NVME_MAX_FB;
2221 }
2222 }
2223
2224 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_DISC,
2225 "6029 NVME PRLI Cmpl w1 x%08x "
2226 "w4 x%08x w5 x%08x flag x%x, "
2227 "fcp_info x%x nlp_type x%x\n",
2228 be32_to_cpu(nvpr->word1),
2229 be32_to_cpu(nvpr->word4),
2230 be32_to_cpu(nvpr->word5),
2231 ndlp->nlp_flag, ndlp->nlp_fcp_info,
2232 ndlp->nlp_type);
2233 }
2234 if (!(ndlp->nlp_type & NLP_FCP_TARGET) &&
2235 (vport->port_type == LPFC_NPIV_PORT) &&
2236 vport->cfg_restrict_login) {
2237 out:
2238 spin_lock_irq(&ndlp->lock);
2239 ndlp->nlp_flag |= NLP_TARGET_REMOVE;
2240 spin_unlock_irq(&ndlp->lock);
2241 lpfc_issue_els_logo(vport, ndlp, 0);
2242
2243 ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
2244 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
2245 return ndlp->nlp_state;
2246 }
2247
2248 out_err:
2249 /* The ndlp state cannot move to MAPPED or UNMAPPED before all PRLIs
2250 * are complete.
2251 */
2252 if (ndlp->fc4_prli_sent == 0) {
2253 ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
2254 if (ndlp->nlp_type & (NLP_FCP_TARGET | NLP_NVME_TARGET))
2255 lpfc_nlp_set_state(vport, ndlp, NLP_STE_MAPPED_NODE);
2256 else if (ndlp->nlp_type &
2257 (NLP_FCP_INITIATOR | NLP_NVME_INITIATOR))
2258 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
2259 } else
2260 lpfc_printf_vlog(vport,
2261 KERN_INFO, LOG_ELS,
2262 "3067 PRLI's still outstanding "
2263 "on x%06x - count %d, Pend Node Mode "
2264 "transition...\n",
2265 ndlp->nlp_DID, ndlp->fc4_prli_sent);
2266
2267 return ndlp->nlp_state;
2268 }
2269
2270 /*! lpfc_device_rm_prli_issue
2271 *
2272 * \pre
2273 * \post
2274 * \param phba
2275 * \param ndlp
2276 * \param arg
2277 * \param evt
2278 * \return uint32_t
2279 *
2280 * \b Description:
2281 * This routine is envoked when we a request to remove a nport we are in the
2282 * process of PRLIing. We should software abort outstanding prli, unreg
2283 * login, send a logout. We will change node state to UNUSED_NODE, put it
2284 * on plogi list so it can be freed when LOGO completes.
2285 *
2286 */
2287
2288 static uint32_t
lpfc_device_rm_prli_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2289 lpfc_device_rm_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2290 void *arg, uint32_t evt)
2291 {
2292 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
2293 spin_lock_irq(&ndlp->lock);
2294 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
2295 spin_unlock_irq(&ndlp->lock);
2296 return ndlp->nlp_state;
2297 } else {
2298 /* software abort outstanding PLOGI */
2299 lpfc_els_abort(vport->phba, ndlp);
2300
2301 lpfc_drop_node(vport, ndlp);
2302 return NLP_STE_FREED_NODE;
2303 }
2304 }
2305
2306
2307 /*! lpfc_device_recov_prli_issue
2308 *
2309 * \pre
2310 * \post
2311 * \param phba
2312 * \param ndlp
2313 * \param arg
2314 * \param evt
2315 * \return uint32_t
2316 *
2317 * \b Description:
2318 * The routine is envoked when the state of a device is unknown, like
2319 * during a link down. We should remove the nodelist entry from the
2320 * unmapped list, issue a UNREG_LOGIN, do a software abort of the
2321 * outstanding PRLI command, then free the node entry.
2322 */
2323 static uint32_t
lpfc_device_recov_prli_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2324 lpfc_device_recov_prli_issue(struct lpfc_vport *vport,
2325 struct lpfc_nodelist *ndlp,
2326 void *arg,
2327 uint32_t evt)
2328 {
2329 struct lpfc_hba *phba = vport->phba;
2330
2331 /* Don't do anything that will mess up processing of the
2332 * previous RSCN.
2333 */
2334 if (vport->fc_flag & FC_RSCN_DEFERRED)
2335 return ndlp->nlp_state;
2336
2337 /* software abort outstanding PRLI */
2338 lpfc_els_abort(phba, ndlp);
2339
2340 ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
2341 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
2342 spin_lock_irq(&ndlp->lock);
2343 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
2344 spin_unlock_irq(&ndlp->lock);
2345 lpfc_disc_set_adisc(vport, ndlp);
2346 return ndlp->nlp_state;
2347 }
2348
2349 static uint32_t
lpfc_rcv_plogi_logo_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2350 lpfc_rcv_plogi_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2351 void *arg, uint32_t evt)
2352 {
2353 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *)arg;
2354 struct ls_rjt stat;
2355
2356 memset(&stat, 0, sizeof(struct ls_rjt));
2357 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
2358 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
2359 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
2360 return ndlp->nlp_state;
2361 }
2362
2363 static uint32_t
lpfc_rcv_prli_logo_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2364 lpfc_rcv_prli_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2365 void *arg, uint32_t evt)
2366 {
2367 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *)arg;
2368 struct ls_rjt stat;
2369
2370 memset(&stat, 0, sizeof(struct ls_rjt));
2371 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
2372 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
2373 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
2374 return ndlp->nlp_state;
2375 }
2376
2377 static uint32_t
lpfc_rcv_logo_logo_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2378 lpfc_rcv_logo_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2379 void *arg, uint32_t evt)
2380 {
2381 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *)arg;
2382
2383 spin_lock_irq(&ndlp->lock);
2384 ndlp->nlp_flag |= NLP_LOGO_ACC;
2385 spin_unlock_irq(&ndlp->lock);
2386 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
2387 return ndlp->nlp_state;
2388 }
2389
2390 static uint32_t
lpfc_rcv_padisc_logo_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2391 lpfc_rcv_padisc_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2392 void *arg, uint32_t evt)
2393 {
2394 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *)arg;
2395 struct ls_rjt stat;
2396
2397 memset(&stat, 0, sizeof(struct ls_rjt));
2398 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
2399 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
2400 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
2401 return ndlp->nlp_state;
2402 }
2403
2404 static uint32_t
lpfc_rcv_prlo_logo_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2405 lpfc_rcv_prlo_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2406 void *arg, uint32_t evt)
2407 {
2408 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *)arg;
2409 struct ls_rjt stat;
2410
2411 memset(&stat, 0, sizeof(struct ls_rjt));
2412 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
2413 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
2414 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
2415 return ndlp->nlp_state;
2416 }
2417
2418 static uint32_t
lpfc_cmpl_logo_logo_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2419 lpfc_cmpl_logo_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2420 void *arg, uint32_t evt)
2421 {
2422 ndlp->nlp_prev_state = NLP_STE_LOGO_ISSUE;
2423 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
2424 spin_lock_irq(&ndlp->lock);
2425 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
2426 spin_unlock_irq(&ndlp->lock);
2427 lpfc_disc_set_adisc(vport, ndlp);
2428 return ndlp->nlp_state;
2429 }
2430
2431 static uint32_t
lpfc_device_rm_logo_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2432 lpfc_device_rm_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2433 void *arg, uint32_t evt)
2434 {
2435 /*
2436 * DevLoss has timed out and is calling for Device Remove.
2437 * In this case, abort the LOGO and cleanup the ndlp
2438 */
2439
2440 lpfc_unreg_rpi(vport, ndlp);
2441 /* software abort outstanding PLOGI */
2442 lpfc_els_abort(vport->phba, ndlp);
2443 lpfc_drop_node(vport, ndlp);
2444 return NLP_STE_FREED_NODE;
2445 }
2446
2447 static uint32_t
lpfc_device_recov_logo_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2448 lpfc_device_recov_logo_issue(struct lpfc_vport *vport,
2449 struct lpfc_nodelist *ndlp,
2450 void *arg, uint32_t evt)
2451 {
2452 /*
2453 * Device Recovery events have no meaning for a node with a LOGO
2454 * outstanding. The LOGO has to complete first and handle the
2455 * node from that point.
2456 */
2457 return ndlp->nlp_state;
2458 }
2459
2460 static uint32_t
lpfc_rcv_plogi_unmap_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2461 lpfc_rcv_plogi_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2462 void *arg, uint32_t evt)
2463 {
2464 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2465
2466 lpfc_rcv_plogi(vport, ndlp, cmdiocb);
2467 return ndlp->nlp_state;
2468 }
2469
2470 static uint32_t
lpfc_rcv_prli_unmap_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2471 lpfc_rcv_prli_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2472 void *arg, uint32_t evt)
2473 {
2474 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2475
2476 if (!lpfc_rcv_prli_support_check(vport, ndlp, cmdiocb))
2477 return ndlp->nlp_state;
2478
2479 lpfc_rcv_prli(vport, ndlp, cmdiocb);
2480 lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
2481 return ndlp->nlp_state;
2482 }
2483
2484 static uint32_t
lpfc_rcv_logo_unmap_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2485 lpfc_rcv_logo_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2486 void *arg, uint32_t evt)
2487 {
2488 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2489
2490 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
2491 return ndlp->nlp_state;
2492 }
2493
2494 static uint32_t
lpfc_rcv_padisc_unmap_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2495 lpfc_rcv_padisc_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2496 void *arg, uint32_t evt)
2497 {
2498 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2499
2500 lpfc_rcv_padisc(vport, ndlp, cmdiocb);
2501 return ndlp->nlp_state;
2502 }
2503
2504 static uint32_t
lpfc_rcv_prlo_unmap_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2505 lpfc_rcv_prlo_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2506 void *arg, uint32_t evt)
2507 {
2508 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2509
2510 lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
2511 return ndlp->nlp_state;
2512 }
2513
2514 static uint32_t
lpfc_device_rm_unmap_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2515 lpfc_device_rm_unmap_node(struct lpfc_vport *vport,
2516 struct lpfc_nodelist *ndlp,
2517 void *arg,
2518 uint32_t evt)
2519 {
2520 lpfc_drop_node(vport, ndlp);
2521 return NLP_STE_FREED_NODE;
2522 }
2523
2524 static uint32_t
lpfc_device_recov_unmap_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2525 lpfc_device_recov_unmap_node(struct lpfc_vport *vport,
2526 struct lpfc_nodelist *ndlp,
2527 void *arg,
2528 uint32_t evt)
2529 {
2530 ndlp->nlp_prev_state = NLP_STE_UNMAPPED_NODE;
2531 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
2532 spin_lock_irq(&ndlp->lock);
2533 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
2534 ndlp->nlp_fc4_type &= ~(NLP_FC4_FCP | NLP_FC4_NVME);
2535 spin_unlock_irq(&ndlp->lock);
2536 lpfc_disc_set_adisc(vport, ndlp);
2537
2538 return ndlp->nlp_state;
2539 }
2540
2541 static uint32_t
lpfc_rcv_plogi_mapped_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2542 lpfc_rcv_plogi_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2543 void *arg, uint32_t evt)
2544 {
2545 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2546
2547 lpfc_rcv_plogi(vport, ndlp, cmdiocb);
2548 return ndlp->nlp_state;
2549 }
2550
2551 static uint32_t
lpfc_rcv_prli_mapped_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2552 lpfc_rcv_prli_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2553 void *arg, uint32_t evt)
2554 {
2555 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2556
2557 if (!lpfc_rcv_prli_support_check(vport, ndlp, cmdiocb))
2558 return ndlp->nlp_state;
2559 lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
2560 return ndlp->nlp_state;
2561 }
2562
2563 static uint32_t
lpfc_rcv_logo_mapped_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2564 lpfc_rcv_logo_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2565 void *arg, uint32_t evt)
2566 {
2567 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2568
2569 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
2570 return ndlp->nlp_state;
2571 }
2572
2573 static uint32_t
lpfc_rcv_padisc_mapped_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2574 lpfc_rcv_padisc_mapped_node(struct lpfc_vport *vport,
2575 struct lpfc_nodelist *ndlp,
2576 void *arg, uint32_t evt)
2577 {
2578 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2579
2580 lpfc_rcv_padisc(vport, ndlp, cmdiocb);
2581 return ndlp->nlp_state;
2582 }
2583
2584 static uint32_t
lpfc_rcv_prlo_mapped_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2585 lpfc_rcv_prlo_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2586 void *arg, uint32_t evt)
2587 {
2588 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2589
2590 /* flush the target */
2591 lpfc_sli_abort_iocb(vport, ndlp->nlp_sid, 0, LPFC_CTX_TGT);
2592
2593 /* Treat like rcv logo */
2594 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_PRLO);
2595 return ndlp->nlp_state;
2596 }
2597
2598 static uint32_t
lpfc_device_recov_mapped_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2599 lpfc_device_recov_mapped_node(struct lpfc_vport *vport,
2600 struct lpfc_nodelist *ndlp,
2601 void *arg,
2602 uint32_t evt)
2603 {
2604 lpfc_disc_set_adisc(vport, ndlp);
2605
2606 ndlp->nlp_prev_state = NLP_STE_MAPPED_NODE;
2607 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
2608 spin_lock_irq(&ndlp->lock);
2609 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
2610 ndlp->nlp_fc4_type &= ~(NLP_FC4_FCP | NLP_FC4_NVME);
2611 spin_unlock_irq(&ndlp->lock);
2612 return ndlp->nlp_state;
2613 }
2614
2615 static uint32_t
lpfc_rcv_plogi_npr_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2616 lpfc_rcv_plogi_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2617 void *arg, uint32_t evt)
2618 {
2619 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2620
2621 /* Ignore PLOGI if we have an outstanding LOGO */
2622 if (ndlp->nlp_flag & (NLP_LOGO_SND | NLP_LOGO_ACC))
2623 return ndlp->nlp_state;
2624 if (lpfc_rcv_plogi(vport, ndlp, cmdiocb)) {
2625 lpfc_cancel_retry_delay_tmo(vport, ndlp);
2626 spin_lock_irq(&ndlp->lock);
2627 ndlp->nlp_flag &= ~(NLP_NPR_ADISC | NLP_NPR_2B_DISC);
2628 spin_unlock_irq(&ndlp->lock);
2629 } else if (!(ndlp->nlp_flag & NLP_NPR_2B_DISC)) {
2630 /* send PLOGI immediately, move to PLOGI issue state */
2631 if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) {
2632 ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
2633 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
2634 lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
2635 }
2636 }
2637 return ndlp->nlp_state;
2638 }
2639
2640 static uint32_t
lpfc_rcv_prli_npr_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2641 lpfc_rcv_prli_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2642 void *arg, uint32_t evt)
2643 {
2644 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2645 struct ls_rjt stat;
2646
2647 memset(&stat, 0, sizeof (struct ls_rjt));
2648 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
2649 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
2650 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
2651
2652 if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) {
2653 /*
2654 * ADISC nodes will be handled in regular discovery path after
2655 * receiving response from NS.
2656 *
2657 * For other nodes, Send PLOGI to trigger an implicit LOGO.
2658 */
2659 if (!(ndlp->nlp_flag & NLP_NPR_ADISC)) {
2660 ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
2661 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
2662 lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
2663 }
2664 }
2665 return ndlp->nlp_state;
2666 }
2667
2668 static uint32_t
lpfc_rcv_logo_npr_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2669 lpfc_rcv_logo_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2670 void *arg, uint32_t evt)
2671 {
2672 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2673
2674 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
2675 return ndlp->nlp_state;
2676 }
2677
2678 static uint32_t
lpfc_rcv_padisc_npr_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2679 lpfc_rcv_padisc_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2680 void *arg, uint32_t evt)
2681 {
2682 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2683
2684 lpfc_rcv_padisc(vport, ndlp, cmdiocb);
2685 /*
2686 * Do not start discovery if discovery is about to start
2687 * or discovery in progress for this node. Starting discovery
2688 * here will affect the counting of discovery threads.
2689 */
2690 if (!(ndlp->nlp_flag & NLP_DELAY_TMO) &&
2691 !(ndlp->nlp_flag & NLP_NPR_2B_DISC)) {
2692 /*
2693 * ADISC nodes will be handled in regular discovery path after
2694 * receiving response from NS.
2695 *
2696 * For other nodes, Send PLOGI to trigger an implicit LOGO.
2697 */
2698 if (!(ndlp->nlp_flag & NLP_NPR_ADISC)) {
2699 ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
2700 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
2701 lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
2702 }
2703 }
2704 return ndlp->nlp_state;
2705 }
2706
2707 static uint32_t
lpfc_rcv_prlo_npr_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2708 lpfc_rcv_prlo_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2709 void *arg, uint32_t evt)
2710 {
2711 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2712
2713 spin_lock_irq(&ndlp->lock);
2714 ndlp->nlp_flag |= NLP_LOGO_ACC;
2715 spin_unlock_irq(&ndlp->lock);
2716
2717 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
2718
2719 if ((ndlp->nlp_flag & NLP_DELAY_TMO) == 0) {
2720 mod_timer(&ndlp->nlp_delayfunc,
2721 jiffies + msecs_to_jiffies(1000 * 1));
2722 spin_lock_irq(&ndlp->lock);
2723 ndlp->nlp_flag |= NLP_DELAY_TMO;
2724 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
2725 spin_unlock_irq(&ndlp->lock);
2726 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
2727 } else {
2728 spin_lock_irq(&ndlp->lock);
2729 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
2730 spin_unlock_irq(&ndlp->lock);
2731 }
2732 return ndlp->nlp_state;
2733 }
2734
2735 static uint32_t
lpfc_cmpl_plogi_npr_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2736 lpfc_cmpl_plogi_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2737 void *arg, uint32_t evt)
2738 {
2739 struct lpfc_iocbq *cmdiocb, *rspiocb;
2740 IOCB_t *irsp;
2741
2742 cmdiocb = (struct lpfc_iocbq *) arg;
2743 rspiocb = cmdiocb->context_un.rsp_iocb;
2744
2745 irsp = &rspiocb->iocb;
2746 if (irsp->ulpStatus) {
2747 return NLP_STE_FREED_NODE;
2748 }
2749 return ndlp->nlp_state;
2750 }
2751
2752 static uint32_t
lpfc_cmpl_prli_npr_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2753 lpfc_cmpl_prli_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2754 void *arg, uint32_t evt)
2755 {
2756 struct lpfc_iocbq *cmdiocb, *rspiocb;
2757 IOCB_t *irsp;
2758
2759 cmdiocb = (struct lpfc_iocbq *) arg;
2760 rspiocb = cmdiocb->context_un.rsp_iocb;
2761
2762 irsp = &rspiocb->iocb;
2763 if (irsp->ulpStatus && (ndlp->nlp_flag & NLP_NODEV_REMOVE)) {
2764 lpfc_drop_node(vport, ndlp);
2765 return NLP_STE_FREED_NODE;
2766 }
2767 return ndlp->nlp_state;
2768 }
2769
2770 static uint32_t
lpfc_cmpl_logo_npr_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2771 lpfc_cmpl_logo_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2772 void *arg, uint32_t evt)
2773 {
2774 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2775
2776 /* For the fabric port just clear the fc flags. */
2777 if (ndlp->nlp_DID == Fabric_DID) {
2778 spin_lock_irq(shost->host_lock);
2779 vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP);
2780 spin_unlock_irq(shost->host_lock);
2781 }
2782 lpfc_unreg_rpi(vport, ndlp);
2783 return ndlp->nlp_state;
2784 }
2785
2786 static uint32_t
lpfc_cmpl_adisc_npr_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2787 lpfc_cmpl_adisc_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2788 void *arg, uint32_t evt)
2789 {
2790 struct lpfc_iocbq *cmdiocb, *rspiocb;
2791 IOCB_t *irsp;
2792
2793 cmdiocb = (struct lpfc_iocbq *) arg;
2794 rspiocb = cmdiocb->context_un.rsp_iocb;
2795
2796 irsp = &rspiocb->iocb;
2797 if (irsp->ulpStatus && (ndlp->nlp_flag & NLP_NODEV_REMOVE)) {
2798 lpfc_drop_node(vport, ndlp);
2799 return NLP_STE_FREED_NODE;
2800 }
2801 return ndlp->nlp_state;
2802 }
2803
2804 static uint32_t
lpfc_cmpl_reglogin_npr_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2805 lpfc_cmpl_reglogin_npr_node(struct lpfc_vport *vport,
2806 struct lpfc_nodelist *ndlp,
2807 void *arg, uint32_t evt)
2808 {
2809 LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg;
2810 MAILBOX_t *mb = &pmb->u.mb;
2811
2812 if (!mb->mbxStatus) {
2813 /* SLI4 ports have preallocated logical rpis. */
2814 if (vport->phba->sli_rev < LPFC_SLI_REV4)
2815 ndlp->nlp_rpi = mb->un.varWords[0];
2816 ndlp->nlp_flag |= NLP_RPI_REGISTERED;
2817 if (ndlp->nlp_flag & NLP_LOGO_ACC) {
2818 lpfc_unreg_rpi(vport, ndlp);
2819 }
2820 } else {
2821 if (ndlp->nlp_flag & NLP_NODEV_REMOVE) {
2822 lpfc_drop_node(vport, ndlp);
2823 return NLP_STE_FREED_NODE;
2824 }
2825 }
2826 return ndlp->nlp_state;
2827 }
2828
2829 static uint32_t
lpfc_device_rm_npr_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2830 lpfc_device_rm_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2831 void *arg, uint32_t evt)
2832 {
2833 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
2834 spin_lock_irq(&ndlp->lock);
2835 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
2836 spin_unlock_irq(&ndlp->lock);
2837 return ndlp->nlp_state;
2838 }
2839 lpfc_drop_node(vport, ndlp);
2840 return NLP_STE_FREED_NODE;
2841 }
2842
2843 static uint32_t
lpfc_device_recov_npr_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2844 lpfc_device_recov_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2845 void *arg, uint32_t evt)
2846 {
2847 /* Don't do anything that will mess up processing of the
2848 * previous RSCN.
2849 */
2850 if (vport->fc_flag & FC_RSCN_DEFERRED)
2851 return ndlp->nlp_state;
2852
2853 lpfc_cancel_retry_delay_tmo(vport, ndlp);
2854 spin_lock_irq(&ndlp->lock);
2855 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
2856 ndlp->nlp_fc4_type &= ~(NLP_FC4_FCP | NLP_FC4_NVME);
2857 spin_unlock_irq(&ndlp->lock);
2858 return ndlp->nlp_state;
2859 }
2860
2861
2862 /* This next section defines the NPort Discovery State Machine */
2863
2864 /* There are 4 different double linked lists nodelist entries can reside on.
2865 * The plogi list and adisc list are used when Link Up discovery or RSCN
2866 * processing is needed. Each list holds the nodes that we will send PLOGI
2867 * or ADISC on. These lists will keep track of what nodes will be effected
2868 * by an RSCN, or a Link Up (Typically, all nodes are effected on Link Up).
2869 * The unmapped_list will contain all nodes that we have successfully logged
2870 * into at the Fibre Channel level. The mapped_list will contain all nodes
2871 * that are mapped FCP targets.
2872 */
2873 /*
2874 * The bind list is a list of undiscovered (potentially non-existent) nodes
2875 * that we have saved binding information on. This information is used when
2876 * nodes transition from the unmapped to the mapped list.
2877 */
2878 /* For UNUSED_NODE state, the node has just been allocated .
2879 * For PLOGI_ISSUE and REG_LOGIN_ISSUE, the node is on
2880 * the PLOGI list. For REG_LOGIN_COMPL, the node is taken off the PLOGI list
2881 * and put on the unmapped list. For ADISC processing, the node is taken off
2882 * the ADISC list and placed on either the mapped or unmapped list (depending
2883 * on its previous state). Once on the unmapped list, a PRLI is issued and the
2884 * state changed to PRLI_ISSUE. When the PRLI completion occurs, the state is
2885 * changed to UNMAPPED_NODE. If the completion indicates a mapped
2886 * node, the node is taken off the unmapped list. The binding list is checked
2887 * for a valid binding, or a binding is automatically assigned. If binding
2888 * assignment is unsuccessful, the node is left on the unmapped list. If
2889 * binding assignment is successful, the associated binding list entry (if
2890 * any) is removed, and the node is placed on the mapped list.
2891 */
2892 /*
2893 * For a Link Down, all nodes on the ADISC, PLOGI, unmapped or mapped
2894 * lists will receive a DEVICE_RECOVERY event. If the linkdown or devloss timers
2895 * expire, all effected nodes will receive a DEVICE_RM event.
2896 */
2897 /*
2898 * For a Link Up or RSCN, all nodes will move from the mapped / unmapped lists
2899 * to either the ADISC or PLOGI list. After a Nameserver query or ALPA loopmap
2900 * check, additional nodes may be added or removed (via DEVICE_RM) to / from
2901 * the PLOGI or ADISC lists. Once the PLOGI and ADISC lists are populated,
2902 * we will first process the ADISC list. 32 entries are processed initially and
2903 * ADISC is initited for each one. Completions / Events for each node are
2904 * funnelled thru the state machine. As each node finishes ADISC processing, it
2905 * starts ADISC for any nodes waiting for ADISC processing. If no nodes are
2906 * waiting, and the ADISC list count is identically 0, then we are done. For
2907 * Link Up discovery, since all nodes on the PLOGI list are UNREG_LOGIN'ed, we
2908 * can issue a CLEAR_LA and reenable Link Events. Next we will process the PLOGI
2909 * list. 32 entries are processed initially and PLOGI is initited for each one.
2910 * Completions / Events for each node are funnelled thru the state machine. As
2911 * each node finishes PLOGI processing, it starts PLOGI for any nodes waiting
2912 * for PLOGI processing. If no nodes are waiting, and the PLOGI list count is
2913 * indentically 0, then we are done. We have now completed discovery / RSCN
2914 * handling. Upon completion, ALL nodes should be on either the mapped or
2915 * unmapped lists.
2916 */
2917
2918 static uint32_t (*lpfc_disc_action[NLP_STE_MAX_STATE * NLP_EVT_MAX_EVENT])
2919 (struct lpfc_vport *, struct lpfc_nodelist *, void *, uint32_t) = {
2920 /* Action routine Event Current State */
2921 lpfc_rcv_plogi_unused_node, /* RCV_PLOGI UNUSED_NODE */
2922 lpfc_rcv_els_unused_node, /* RCV_PRLI */
2923 lpfc_rcv_logo_unused_node, /* RCV_LOGO */
2924 lpfc_rcv_els_unused_node, /* RCV_ADISC */
2925 lpfc_rcv_els_unused_node, /* RCV_PDISC */
2926 lpfc_rcv_els_unused_node, /* RCV_PRLO */
2927 lpfc_disc_illegal, /* CMPL_PLOGI */
2928 lpfc_disc_illegal, /* CMPL_PRLI */
2929 lpfc_cmpl_logo_unused_node, /* CMPL_LOGO */
2930 lpfc_disc_illegal, /* CMPL_ADISC */
2931 lpfc_disc_illegal, /* CMPL_REG_LOGIN */
2932 lpfc_device_rm_unused_node, /* DEVICE_RM */
2933 lpfc_device_recov_unused_node, /* DEVICE_RECOVERY */
2934
2935 lpfc_rcv_plogi_plogi_issue, /* RCV_PLOGI PLOGI_ISSUE */
2936 lpfc_rcv_prli_plogi_issue, /* RCV_PRLI */
2937 lpfc_rcv_logo_plogi_issue, /* RCV_LOGO */
2938 lpfc_rcv_els_plogi_issue, /* RCV_ADISC */
2939 lpfc_rcv_els_plogi_issue, /* RCV_PDISC */
2940 lpfc_rcv_els_plogi_issue, /* RCV_PRLO */
2941 lpfc_cmpl_plogi_plogi_issue, /* CMPL_PLOGI */
2942 lpfc_disc_illegal, /* CMPL_PRLI */
2943 lpfc_cmpl_logo_plogi_issue, /* CMPL_LOGO */
2944 lpfc_disc_illegal, /* CMPL_ADISC */
2945 lpfc_cmpl_reglogin_plogi_issue,/* CMPL_REG_LOGIN */
2946 lpfc_device_rm_plogi_issue, /* DEVICE_RM */
2947 lpfc_device_recov_plogi_issue, /* DEVICE_RECOVERY */
2948
2949 lpfc_rcv_plogi_adisc_issue, /* RCV_PLOGI ADISC_ISSUE */
2950 lpfc_rcv_prli_adisc_issue, /* RCV_PRLI */
2951 lpfc_rcv_logo_adisc_issue, /* RCV_LOGO */
2952 lpfc_rcv_padisc_adisc_issue, /* RCV_ADISC */
2953 lpfc_rcv_padisc_adisc_issue, /* RCV_PDISC */
2954 lpfc_rcv_prlo_adisc_issue, /* RCV_PRLO */
2955 lpfc_disc_illegal, /* CMPL_PLOGI */
2956 lpfc_disc_illegal, /* CMPL_PRLI */
2957 lpfc_disc_illegal, /* CMPL_LOGO */
2958 lpfc_cmpl_adisc_adisc_issue, /* CMPL_ADISC */
2959 lpfc_disc_illegal, /* CMPL_REG_LOGIN */
2960 lpfc_device_rm_adisc_issue, /* DEVICE_RM */
2961 lpfc_device_recov_adisc_issue, /* DEVICE_RECOVERY */
2962
2963 lpfc_rcv_plogi_reglogin_issue, /* RCV_PLOGI REG_LOGIN_ISSUE */
2964 lpfc_rcv_prli_reglogin_issue, /* RCV_PLOGI */
2965 lpfc_rcv_logo_reglogin_issue, /* RCV_LOGO */
2966 lpfc_rcv_padisc_reglogin_issue, /* RCV_ADISC */
2967 lpfc_rcv_padisc_reglogin_issue, /* RCV_PDISC */
2968 lpfc_rcv_prlo_reglogin_issue, /* RCV_PRLO */
2969 lpfc_cmpl_plogi_illegal, /* CMPL_PLOGI */
2970 lpfc_disc_illegal, /* CMPL_PRLI */
2971 lpfc_disc_illegal, /* CMPL_LOGO */
2972 lpfc_disc_illegal, /* CMPL_ADISC */
2973 lpfc_cmpl_reglogin_reglogin_issue,/* CMPL_REG_LOGIN */
2974 lpfc_device_rm_reglogin_issue, /* DEVICE_RM */
2975 lpfc_device_recov_reglogin_issue,/* DEVICE_RECOVERY */
2976
2977 lpfc_rcv_plogi_prli_issue, /* RCV_PLOGI PRLI_ISSUE */
2978 lpfc_rcv_prli_prli_issue, /* RCV_PRLI */
2979 lpfc_rcv_logo_prli_issue, /* RCV_LOGO */
2980 lpfc_rcv_padisc_prli_issue, /* RCV_ADISC */
2981 lpfc_rcv_padisc_prli_issue, /* RCV_PDISC */
2982 lpfc_rcv_prlo_prli_issue, /* RCV_PRLO */
2983 lpfc_cmpl_plogi_illegal, /* CMPL_PLOGI */
2984 lpfc_cmpl_prli_prli_issue, /* CMPL_PRLI */
2985 lpfc_disc_illegal, /* CMPL_LOGO */
2986 lpfc_disc_illegal, /* CMPL_ADISC */
2987 lpfc_disc_illegal, /* CMPL_REG_LOGIN */
2988 lpfc_device_rm_prli_issue, /* DEVICE_RM */
2989 lpfc_device_recov_prli_issue, /* DEVICE_RECOVERY */
2990
2991 lpfc_rcv_plogi_logo_issue, /* RCV_PLOGI LOGO_ISSUE */
2992 lpfc_rcv_prli_logo_issue, /* RCV_PRLI */
2993 lpfc_rcv_logo_logo_issue, /* RCV_LOGO */
2994 lpfc_rcv_padisc_logo_issue, /* RCV_ADISC */
2995 lpfc_rcv_padisc_logo_issue, /* RCV_PDISC */
2996 lpfc_rcv_prlo_logo_issue, /* RCV_PRLO */
2997 lpfc_cmpl_plogi_illegal, /* CMPL_PLOGI */
2998 lpfc_disc_illegal, /* CMPL_PRLI */
2999 lpfc_cmpl_logo_logo_issue, /* CMPL_LOGO */
3000 lpfc_disc_illegal, /* CMPL_ADISC */
3001 lpfc_disc_illegal, /* CMPL_REG_LOGIN */
3002 lpfc_device_rm_logo_issue, /* DEVICE_RM */
3003 lpfc_device_recov_logo_issue, /* DEVICE_RECOVERY */
3004
3005 lpfc_rcv_plogi_unmap_node, /* RCV_PLOGI UNMAPPED_NODE */
3006 lpfc_rcv_prli_unmap_node, /* RCV_PRLI */
3007 lpfc_rcv_logo_unmap_node, /* RCV_LOGO */
3008 lpfc_rcv_padisc_unmap_node, /* RCV_ADISC */
3009 lpfc_rcv_padisc_unmap_node, /* RCV_PDISC */
3010 lpfc_rcv_prlo_unmap_node, /* RCV_PRLO */
3011 lpfc_disc_illegal, /* CMPL_PLOGI */
3012 lpfc_disc_illegal, /* CMPL_PRLI */
3013 lpfc_disc_illegal, /* CMPL_LOGO */
3014 lpfc_disc_illegal, /* CMPL_ADISC */
3015 lpfc_disc_illegal, /* CMPL_REG_LOGIN */
3016 lpfc_device_rm_unmap_node, /* DEVICE_RM */
3017 lpfc_device_recov_unmap_node, /* DEVICE_RECOVERY */
3018
3019 lpfc_rcv_plogi_mapped_node, /* RCV_PLOGI MAPPED_NODE */
3020 lpfc_rcv_prli_mapped_node, /* RCV_PRLI */
3021 lpfc_rcv_logo_mapped_node, /* RCV_LOGO */
3022 lpfc_rcv_padisc_mapped_node, /* RCV_ADISC */
3023 lpfc_rcv_padisc_mapped_node, /* RCV_PDISC */
3024 lpfc_rcv_prlo_mapped_node, /* RCV_PRLO */
3025 lpfc_disc_illegal, /* CMPL_PLOGI */
3026 lpfc_disc_illegal, /* CMPL_PRLI */
3027 lpfc_disc_illegal, /* CMPL_LOGO */
3028 lpfc_disc_illegal, /* CMPL_ADISC */
3029 lpfc_disc_illegal, /* CMPL_REG_LOGIN */
3030 lpfc_disc_illegal, /* DEVICE_RM */
3031 lpfc_device_recov_mapped_node, /* DEVICE_RECOVERY */
3032
3033 lpfc_rcv_plogi_npr_node, /* RCV_PLOGI NPR_NODE */
3034 lpfc_rcv_prli_npr_node, /* RCV_PRLI */
3035 lpfc_rcv_logo_npr_node, /* RCV_LOGO */
3036 lpfc_rcv_padisc_npr_node, /* RCV_ADISC */
3037 lpfc_rcv_padisc_npr_node, /* RCV_PDISC */
3038 lpfc_rcv_prlo_npr_node, /* RCV_PRLO */
3039 lpfc_cmpl_plogi_npr_node, /* CMPL_PLOGI */
3040 lpfc_cmpl_prli_npr_node, /* CMPL_PRLI */
3041 lpfc_cmpl_logo_npr_node, /* CMPL_LOGO */
3042 lpfc_cmpl_adisc_npr_node, /* CMPL_ADISC */
3043 lpfc_cmpl_reglogin_npr_node, /* CMPL_REG_LOGIN */
3044 lpfc_device_rm_npr_node, /* DEVICE_RM */
3045 lpfc_device_recov_npr_node, /* DEVICE_RECOVERY */
3046 };
3047
3048 int
lpfc_disc_state_machine(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)3049 lpfc_disc_state_machine(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
3050 void *arg, uint32_t evt)
3051 {
3052 uint32_t cur_state, rc;
3053 uint32_t(*func) (struct lpfc_vport *, struct lpfc_nodelist *, void *,
3054 uint32_t);
3055 uint32_t got_ndlp = 0;
3056 uint32_t data1;
3057
3058 if (lpfc_nlp_get(ndlp))
3059 got_ndlp = 1;
3060
3061 cur_state = ndlp->nlp_state;
3062
3063 data1 = (((uint32_t)ndlp->nlp_fc4_type << 16) |
3064 ((uint32_t)ndlp->nlp_type));
3065 /* DSM in event <evt> on NPort <nlp_DID> in state <cur_state> */
3066 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
3067 "0211 DSM in event x%x on NPort x%x in "
3068 "state %d rpi x%x Data: x%x x%x\n",
3069 evt, ndlp->nlp_DID, cur_state, ndlp->nlp_rpi,
3070 ndlp->nlp_flag, data1);
3071
3072 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_DSM,
3073 "DSM in: evt:%d ste:%d did:x%x",
3074 evt, cur_state, ndlp->nlp_DID);
3075
3076 func = lpfc_disc_action[(cur_state * NLP_EVT_MAX_EVENT) + evt];
3077 rc = (func) (vport, ndlp, arg, evt);
3078
3079 /* DSM out state <rc> on NPort <nlp_DID> */
3080 if (got_ndlp) {
3081 data1 = (((uint32_t)ndlp->nlp_fc4_type << 16) |
3082 ((uint32_t)ndlp->nlp_type));
3083 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
3084 "0212 DSM out state %d on NPort x%x "
3085 "rpi x%x Data: x%x x%x\n",
3086 rc, ndlp->nlp_DID, ndlp->nlp_rpi, ndlp->nlp_flag,
3087 data1);
3088
3089 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_DSM,
3090 "DSM out: ste:%d did:x%x flg:x%x",
3091 rc, ndlp->nlp_DID, ndlp->nlp_flag);
3092 /* Decrement the ndlp reference count held for this function */
3093 lpfc_nlp_put(ndlp);
3094 } else {
3095 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
3096 "0213 DSM out state %d on NPort free\n", rc);
3097
3098 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_DSM,
3099 "DSM out: ste:%d did:x%x flg:x%x",
3100 rc, 0, 0);
3101 }
3102
3103 return rc;
3104 }
3105
