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