1 /*******************************************************************
2 * This file is part of the Emulex Linux Device Driver for *
3 * Fibre Channel Host Bus Adapters. *
4 * Copyright (C) 2017-2023 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 u32 ulp_status = get_job_ulpstatus(phba, rspiocb);
175
176 pcmd = cmdiocb->cmd_dmabuf;
177
178 /* For lpfc_els_abort, cmd_dmabuf could be zero'ed to delay
179 * freeing associated memory till after ABTS completes.
180 */
181 if (pcmd) {
182 prsp = list_get_first(&pcmd->list, struct lpfc_dmabuf,
183 list);
184 if (prsp) {
185 lp = (uint32_t *) prsp->virt;
186 ptr = (void *)((uint8_t *)lp + sizeof(uint32_t));
187 }
188 } else {
189 /* Force ulp_status error since we are returning NULL ptr */
190 if (!(ulp_status)) {
191 if (phba->sli_rev == LPFC_SLI_REV4) {
192 bf_set(lpfc_wcqe_c_status, &rspiocb->wcqe_cmpl,
193 IOSTAT_LOCAL_REJECT);
194 rspiocb->wcqe_cmpl.parameter = IOERR_SLI_ABORTED;
195 } else {
196 rspiocb->iocb.ulpStatus = IOSTAT_LOCAL_REJECT;
197 rspiocb->iocb.un.ulpWord[4] = IOERR_SLI_ABORTED;
198 }
199 }
200 ptr = NULL;
201 }
202 return ptr;
203 }
204
205
206
207 /*
208 * Free resources / clean up outstanding I/Os
209 * associated with a LPFC_NODELIST entry. This
210 * routine effectively results in a "software abort".
211 */
212 void
lpfc_els_abort(struct lpfc_hba * phba,struct lpfc_nodelist * ndlp)213 lpfc_els_abort(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
214 {
215 LIST_HEAD(abort_list);
216 struct lpfc_sli_ring *pring;
217 struct lpfc_iocbq *iocb, *next_iocb;
218
219 pring = lpfc_phba_elsring(phba);
220
221 /* In case of error recovery path, we might have a NULL pring here */
222 if (unlikely(!pring))
223 return;
224
225 /* Abort outstanding I/O on NPort <nlp_DID> */
226 lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_DISCOVERY,
227 "2819 Abort outstanding I/O on NPort x%x "
228 "Data: x%x x%x x%x\n",
229 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
230 ndlp->nlp_rpi);
231 /* Clean up all fabric IOs first.*/
232 lpfc_fabric_abort_nport(ndlp);
233
234 /*
235 * Lock the ELS ring txcmplq for SLI3/SLI4 and build a local list
236 * of all ELS IOs that need an ABTS. The IOs need to stay on the
237 * txcmplq so that the abort operation completes them successfully.
238 */
239 spin_lock_irq(&phba->hbalock);
240 if (phba->sli_rev == LPFC_SLI_REV4)
241 spin_lock(&pring->ring_lock);
242 list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq, list) {
243 /* Add to abort_list on on NDLP match. */
244 if (lpfc_check_sli_ndlp(phba, pring, iocb, ndlp))
245 list_add_tail(&iocb->dlist, &abort_list);
246 }
247 if (phba->sli_rev == LPFC_SLI_REV4)
248 spin_unlock(&pring->ring_lock);
249 spin_unlock_irq(&phba->hbalock);
250
251 /* Abort the targeted IOs and remove them from the abort list. */
252 list_for_each_entry_safe(iocb, next_iocb, &abort_list, dlist) {
253 spin_lock_irq(&phba->hbalock);
254 list_del_init(&iocb->dlist);
255 lpfc_sli_issue_abort_iotag(phba, pring, iocb, NULL);
256 spin_unlock_irq(&phba->hbalock);
257 }
258 /* Make sure HBA is alive */
259 lpfc_issue_hb_tmo(phba);
260
261 INIT_LIST_HEAD(&abort_list);
262
263 /* Now process the txq */
264 spin_lock_irq(&phba->hbalock);
265 if (phba->sli_rev == LPFC_SLI_REV4)
266 spin_lock(&pring->ring_lock);
267
268 list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) {
269 /* Check to see if iocb matches the nport we are looking for */
270 if (lpfc_check_sli_ndlp(phba, pring, iocb, ndlp)) {
271 list_del_init(&iocb->list);
272 list_add_tail(&iocb->list, &abort_list);
273 }
274 }
275
276 if (phba->sli_rev == LPFC_SLI_REV4)
277 spin_unlock(&pring->ring_lock);
278 spin_unlock_irq(&phba->hbalock);
279
280 /* Cancel all the IOCBs from the completions list */
281 lpfc_sli_cancel_iocbs(phba, &abort_list,
282 IOSTAT_LOCAL_REJECT, IOERR_SLI_ABORTED);
283
284 lpfc_cancel_retry_delay_tmo(phba->pport, ndlp);
285 }
286
287 /* lpfc_defer_plogi_acc - Issue PLOGI ACC after reg_login completes
288 * @phba: pointer to lpfc hba data structure.
289 * @login_mbox: pointer to REG_RPI mailbox object
290 *
291 * The ACC for a rcv'ed PLOGI is deferred until AFTER the REG_RPI completes
292 */
293 static void
lpfc_defer_plogi_acc(struct lpfc_hba * phba,LPFC_MBOXQ_t * login_mbox)294 lpfc_defer_plogi_acc(struct lpfc_hba *phba, LPFC_MBOXQ_t *login_mbox)
295 {
296 struct lpfc_iocbq *save_iocb;
297 struct lpfc_nodelist *ndlp;
298 MAILBOX_t *mb = &login_mbox->u.mb;
299
300 int rc;
301
302 ndlp = login_mbox->ctx_ndlp;
303 save_iocb = login_mbox->context3;
304
305 if (mb->mbxStatus == MBX_SUCCESS) {
306 /* Now that REG_RPI completed successfully,
307 * we can now proceed with sending the PLOGI ACC.
308 */
309 rc = lpfc_els_rsp_acc(login_mbox->vport, ELS_CMD_PLOGI,
310 save_iocb, ndlp, NULL);
311 if (rc) {
312 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
313 "4576 PLOGI ACC fails pt2pt discovery: "
314 "DID %x Data: %x\n", ndlp->nlp_DID, rc);
315 }
316 }
317
318 /* Now process the REG_RPI cmpl */
319 lpfc_mbx_cmpl_reg_login(phba, login_mbox);
320 ndlp->nlp_flag &= ~NLP_ACC_REGLOGIN;
321 kfree(save_iocb);
322 }
323
324 static int
lpfc_rcv_plogi(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,struct lpfc_iocbq * cmdiocb)325 lpfc_rcv_plogi(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
326 struct lpfc_iocbq *cmdiocb)
327 {
328 struct lpfc_hba *phba = vport->phba;
329 struct lpfc_dmabuf *pcmd;
330 uint64_t nlp_portwwn = 0;
331 uint32_t *lp;
332 union lpfc_wqe128 *wqe;
333 IOCB_t *icmd;
334 struct serv_parm *sp;
335 uint32_t ed_tov;
336 LPFC_MBOXQ_t *link_mbox;
337 LPFC_MBOXQ_t *login_mbox;
338 struct lpfc_iocbq *save_iocb;
339 struct ls_rjt stat;
340 uint32_t vid, flag;
341 int rc;
342 u32 remote_did;
343
344 memset(&stat, 0, sizeof (struct ls_rjt));
345 pcmd = cmdiocb->cmd_dmabuf;
346 lp = (uint32_t *) pcmd->virt;
347 sp = (struct serv_parm *) ((uint8_t *) lp + sizeof (uint32_t));
348 if (wwn_to_u64(sp->portName.u.wwn) == 0) {
349 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
350 "0140 PLOGI Reject: invalid pname\n");
351 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
352 stat.un.b.lsRjtRsnCodeExp = LSEXP_INVALID_PNAME;
353 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
354 NULL);
355 return 0;
356 }
357 if (wwn_to_u64(sp->nodeName.u.wwn) == 0) {
358 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
359 "0141 PLOGI Reject: invalid nname\n");
360 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
361 stat.un.b.lsRjtRsnCodeExp = LSEXP_INVALID_NNAME;
362 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
363 NULL);
364 return 0;
365 }
366
367 nlp_portwwn = wwn_to_u64(ndlp->nlp_portname.u.wwn);
368 if ((lpfc_check_sparm(vport, ndlp, sp, CLASS3, 0) == 0)) {
369 /* Reject this request because invalid parameters */
370 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
371 stat.un.b.lsRjtRsnCodeExp = LSEXP_SPARM_OPTIONS;
372 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
373 NULL);
374 return 0;
375 }
376
377 if (phba->sli_rev == LPFC_SLI_REV4)
378 wqe = &cmdiocb->wqe;
379 else
380 icmd = &cmdiocb->iocb;
381
382 /* PLOGI chkparm OK */
383 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
384 "0114 PLOGI chkparm OK Data: x%x x%x x%x "
385 "x%x x%x x%x\n",
386 ndlp->nlp_DID, ndlp->nlp_state, ndlp->nlp_flag,
387 ndlp->nlp_rpi, vport->port_state,
388 vport->fc_flag);
389
390 if (vport->cfg_fcp_class == 2 && sp->cls2.classValid)
391 ndlp->nlp_fcp_info |= CLASS2;
392 else
393 ndlp->nlp_fcp_info |= CLASS3;
394
395 ndlp->nlp_class_sup = 0;
396 if (sp->cls1.classValid)
397 ndlp->nlp_class_sup |= FC_COS_CLASS1;
398 if (sp->cls2.classValid)
399 ndlp->nlp_class_sup |= FC_COS_CLASS2;
400 if (sp->cls3.classValid)
401 ndlp->nlp_class_sup |= FC_COS_CLASS3;
402 if (sp->cls4.classValid)
403 ndlp->nlp_class_sup |= FC_COS_CLASS4;
404 ndlp->nlp_maxframe =
405 ((sp->cmn.bbRcvSizeMsb & 0x0F) << 8) | sp->cmn.bbRcvSizeLsb;
406 /* if already logged in, do implicit logout */
407 switch (ndlp->nlp_state) {
408 case NLP_STE_NPR_NODE:
409 if (!(ndlp->nlp_flag & NLP_NPR_ADISC))
410 break;
411 fallthrough;
412 case NLP_STE_REG_LOGIN_ISSUE:
413 case NLP_STE_PRLI_ISSUE:
414 case NLP_STE_UNMAPPED_NODE:
415 case NLP_STE_MAPPED_NODE:
416 /* For initiators, lpfc_plogi_confirm_nport skips fabric did.
417 * For target mode, execute implicit logo.
418 * Fabric nodes go into NPR.
419 */
420 if (!(ndlp->nlp_type & NLP_FABRIC) &&
421 !(phba->nvmet_support)) {
422 /* Clear ndlp info, since follow up PRLI may have
423 * updated ndlp information
424 */
425 ndlp->nlp_type &= ~(NLP_FCP_TARGET | NLP_FCP_INITIATOR);
426 ndlp->nlp_type &= ~(NLP_NVME_TARGET | NLP_NVME_INITIATOR);
427 ndlp->nlp_fcp_info &= ~NLP_FCP_2_DEVICE;
428 ndlp->nlp_nvme_info &= ~NLP_NVME_NSLER;
429 ndlp->nlp_flag &= ~NLP_FIRSTBURST;
430
431 lpfc_els_rsp_acc(vport, ELS_CMD_PLOGI, cmdiocb,
432 ndlp, NULL);
433 return 1;
434 }
435 if (nlp_portwwn != 0 &&
436 nlp_portwwn != wwn_to_u64(sp->portName.u.wwn))
437 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
438 "0143 PLOGI recv'd from DID: x%x "
439 "WWPN changed: old %llx new %llx\n",
440 ndlp->nlp_DID,
441 (unsigned long long)nlp_portwwn,
442 (unsigned long long)
443 wwn_to_u64(sp->portName.u.wwn));
444
445 /* Notify transport of connectivity loss to trigger cleanup. */
446 if (phba->nvmet_support &&
447 ndlp->nlp_state == NLP_STE_UNMAPPED_NODE)
448 lpfc_nvmet_invalidate_host(phba, ndlp);
449
450 ndlp->nlp_prev_state = ndlp->nlp_state;
451 /* rport needs to be unregistered first */
452 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
453 break;
454 }
455
456 ndlp->nlp_type &= ~(NLP_FCP_TARGET | NLP_FCP_INITIATOR);
457 ndlp->nlp_type &= ~(NLP_NVME_TARGET | NLP_NVME_INITIATOR);
458 ndlp->nlp_fcp_info &= ~NLP_FCP_2_DEVICE;
459 ndlp->nlp_nvme_info &= ~NLP_NVME_NSLER;
460 ndlp->nlp_flag &= ~NLP_FIRSTBURST;
461
462 login_mbox = NULL;
463 link_mbox = NULL;
464 save_iocb = NULL;
465
466 /* Check for Nport to NPort pt2pt protocol */
467 if ((vport->fc_flag & FC_PT2PT) &&
468 !(vport->fc_flag & FC_PT2PT_PLOGI)) {
469 /* rcv'ed PLOGI decides what our NPortId will be */
470 if (phba->sli_rev == LPFC_SLI_REV4) {
471 vport->fc_myDID = bf_get(els_rsp64_sid,
472 &cmdiocb->wqe.xmit_els_rsp);
473 } else {
474 vport->fc_myDID = icmd->un.rcvels.parmRo;
475 }
476
477 /* If there is an outstanding FLOGI, abort it now.
478 * The remote NPort is not going to ACC our FLOGI
479 * if its already issuing a PLOGI for pt2pt mode.
480 * This indicates our FLOGI was dropped; however, we
481 * must have ACCed the remote NPorts FLOGI to us
482 * to make it here.
483 */
484 if (phba->hba_flag & HBA_FLOGI_OUTSTANDING)
485 lpfc_els_abort_flogi(phba);
486
487 ed_tov = be32_to_cpu(sp->cmn.e_d_tov);
488 if (sp->cmn.edtovResolution) {
489 /* E_D_TOV ticks are in nanoseconds */
490 ed_tov = (phba->fc_edtov + 999999) / 1000000;
491 }
492
493 /*
494 * For pt-to-pt, use the larger EDTOV
495 * RATOV = 2 * EDTOV
496 */
497 if (ed_tov > phba->fc_edtov)
498 phba->fc_edtov = ed_tov;
499 phba->fc_ratov = (2 * phba->fc_edtov) / 1000;
500
501 memcpy(&phba->fc_fabparam, sp, sizeof(struct serv_parm));
502
503 /* Issue CONFIG_LINK for SLI3 or REG_VFI for SLI4,
504 * to account for updated TOV's / parameters
505 */
506 if (phba->sli_rev == LPFC_SLI_REV4)
507 lpfc_issue_reg_vfi(vport);
508 else {
509 link_mbox = mempool_alloc(phba->mbox_mem_pool,
510 GFP_KERNEL);
511 if (!link_mbox)
512 goto out;
513 lpfc_config_link(phba, link_mbox);
514 link_mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
515 link_mbox->vport = vport;
516
517 /* The default completion handling for CONFIG_LINK
518 * does not require the ndlp so no reference is needed.
519 */
520 link_mbox->ctx_ndlp = ndlp;
521
522 rc = lpfc_sli_issue_mbox(phba, link_mbox, MBX_NOWAIT);
523 if (rc == MBX_NOT_FINISHED) {
524 mempool_free(link_mbox, phba->mbox_mem_pool);
525 goto out;
526 }
527 }
528
529 lpfc_can_disctmo(vport);
530 }
531
532 ndlp->nlp_flag &= ~NLP_SUPPRESS_RSP;
533 if ((phba->sli.sli_flag & LPFC_SLI_SUPPRESS_RSP) &&
534 sp->cmn.valid_vendor_ver_level) {
535 vid = be32_to_cpu(sp->un.vv.vid);
536 flag = be32_to_cpu(sp->un.vv.flags);
537 if ((vid == LPFC_VV_EMLX_ID) && (flag & LPFC_VV_SUPPRESS_RSP))
538 ndlp->nlp_flag |= NLP_SUPPRESS_RSP;
539 }
540
541 login_mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
542 if (!login_mbox)
543 goto out;
544
545 save_iocb = kzalloc(sizeof(*save_iocb), GFP_KERNEL);
546 if (!save_iocb)
547 goto out;
548
549 /* Save info from cmd IOCB to be used in rsp after all mbox completes */
550 memcpy((uint8_t *)save_iocb, (uint8_t *)cmdiocb,
551 sizeof(struct lpfc_iocbq));
552
553 /* Registering an existing RPI behaves differently for SLI3 vs SLI4 */
554 if (phba->sli_rev == LPFC_SLI_REV4)
555 lpfc_unreg_rpi(vport, ndlp);
556
557 /* Issue REG_LOGIN first, before ACCing the PLOGI, thus we will
558 * always be deferring the ACC.
559 */
560 if (phba->sli_rev == LPFC_SLI_REV4)
561 remote_did = bf_get(wqe_els_did, &wqe->xmit_els_rsp.wqe_dest);
562 else
563 remote_did = icmd->un.rcvels.remoteID;
564 rc = lpfc_reg_rpi(phba, vport->vpi, remote_did,
565 (uint8_t *)sp, login_mbox, ndlp->nlp_rpi);
566 if (rc)
567 goto out;
568
569 login_mbox->mbox_cmpl = lpfc_mbx_cmpl_reg_login;
570 login_mbox->vport = vport;
571
572 /*
573 * If there is an outstanding PLOGI issued, abort it before
574 * sending ACC rsp for received PLOGI. If pending plogi
575 * is not canceled here, the plogi will be rejected by
576 * remote port and will be retried. On a configuration with
577 * single discovery thread, this will cause a huge delay in
578 * discovery. Also this will cause multiple state machines
579 * running in parallel for this node.
580 * This only applies to a fabric environment.
581 */
582 if ((ndlp->nlp_state == NLP_STE_PLOGI_ISSUE) &&
583 (vport->fc_flag & FC_FABRIC)) {
584 /* software abort outstanding PLOGI */
585 lpfc_els_abort(phba, ndlp);
586 }
587
588 if ((vport->port_type == LPFC_NPIV_PORT &&
589 vport->cfg_restrict_login)) {
590
591 /* no deferred ACC */
592 kfree(save_iocb);
593
594 /* This is an NPIV SLI4 instance that does not need to register
595 * a default RPI.
596 */
597 if (phba->sli_rev == LPFC_SLI_REV4) {
598 lpfc_mbox_rsrc_cleanup(phba, login_mbox,
599 MBOX_THD_UNLOCKED);
600 login_mbox = NULL;
601 } else {
602 /* In order to preserve RPIs, we want to cleanup
603 * the default RPI the firmware created to rcv
604 * this ELS request. The only way to do this is
605 * to register, then unregister the RPI.
606 */
607 spin_lock_irq(&ndlp->lock);
608 ndlp->nlp_flag |= (NLP_RM_DFLT_RPI | NLP_ACC_REGLOGIN |
609 NLP_RCV_PLOGI);
610 spin_unlock_irq(&ndlp->lock);
611 }
612
613 stat.un.b.lsRjtRsnCode = LSRJT_INVALID_CMD;
614 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
615 rc = lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb,
616 ndlp, login_mbox);
617 if (rc && login_mbox)
618 lpfc_mbox_rsrc_cleanup(phba, login_mbox,
619 MBOX_THD_UNLOCKED);
620 return 1;
621 }
622
623 /* So the order here should be:
624 * SLI3 pt2pt
625 * Issue CONFIG_LINK mbox
626 * CONFIG_LINK cmpl
627 * SLI4 pt2pt
628 * Issue REG_VFI mbox
629 * REG_VFI cmpl
630 * SLI4
631 * Issue UNREG RPI mbx
632 * UNREG RPI cmpl
633 * Issue REG_RPI mbox
634 * REG RPI cmpl
635 * Issue PLOGI ACC
636 * PLOGI ACC cmpl
637 */
638 login_mbox->mbox_cmpl = lpfc_defer_plogi_acc;
639 login_mbox->ctx_ndlp = lpfc_nlp_get(ndlp);
640 if (!login_mbox->ctx_ndlp)
641 goto out;
642
643 login_mbox->context3 = save_iocb; /* For PLOGI ACC */
644
645 spin_lock_irq(&ndlp->lock);
646 ndlp->nlp_flag |= (NLP_ACC_REGLOGIN | NLP_RCV_PLOGI);
647 spin_unlock_irq(&ndlp->lock);
648
649 /* Start the ball rolling by issuing REG_LOGIN here */
650 rc = lpfc_sli_issue_mbox(phba, login_mbox, MBX_NOWAIT);
651 if (rc == MBX_NOT_FINISHED) {
652 lpfc_nlp_put(ndlp);
653 goto out;
654 }
655 lpfc_nlp_set_state(vport, ndlp, NLP_STE_REG_LOGIN_ISSUE);
656
657 return 1;
658 out:
659 kfree(save_iocb);
660 if (login_mbox)
661 mempool_free(login_mbox, phba->mbox_mem_pool);
662
663 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
664 stat.un.b.lsRjtRsnCodeExp = LSEXP_OUT_OF_RESOURCE;
665 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
666 return 0;
667 }
668
669 /**
670 * lpfc_mbx_cmpl_resume_rpi - Resume RPI completion routine
671 * @phba: pointer to lpfc hba data structure.
672 * @mboxq: pointer to mailbox object
673 *
674 * This routine is invoked to issue a completion to a rcv'ed
675 * ADISC or PDISC after the paused RPI has been resumed.
676 **/
677 static void
lpfc_mbx_cmpl_resume_rpi(struct lpfc_hba * phba,LPFC_MBOXQ_t * mboxq)678 lpfc_mbx_cmpl_resume_rpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
679 {
680 struct lpfc_vport *vport;
681 struct lpfc_iocbq *elsiocb;
682 struct lpfc_nodelist *ndlp;
683 uint32_t cmd;
684
685 elsiocb = (struct lpfc_iocbq *)mboxq->ctx_buf;
686 ndlp = (struct lpfc_nodelist *)mboxq->ctx_ndlp;
687 vport = mboxq->vport;
688 cmd = elsiocb->drvrTimeout;
689
690 if (cmd == ELS_CMD_ADISC) {
691 lpfc_els_rsp_adisc_acc(vport, elsiocb, ndlp);
692 } else {
693 lpfc_els_rsp_acc(vport, ELS_CMD_PLOGI, elsiocb,
694 ndlp, NULL);
695 }
696
697 /* This nlp_put pairs with lpfc_sli4_resume_rpi */
698 lpfc_nlp_put(ndlp);
699
700 kfree(elsiocb);
701 mempool_free(mboxq, phba->mbox_mem_pool);
702 }
703
704 static int
lpfc_rcv_padisc(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,struct lpfc_iocbq * cmdiocb)705 lpfc_rcv_padisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
706 struct lpfc_iocbq *cmdiocb)
707 {
708 struct lpfc_hba *phba = vport->phba;
709 struct lpfc_iocbq *elsiocb;
710 struct lpfc_dmabuf *pcmd;
711 struct serv_parm *sp;
712 struct lpfc_name *pnn, *ppn;
713 struct ls_rjt stat;
714 ADISC *ap;
715 uint32_t *lp;
716 uint32_t cmd;
717
718 pcmd = cmdiocb->cmd_dmabuf;
719 lp = (uint32_t *) pcmd->virt;
720
721 cmd = *lp++;
722 if (cmd == ELS_CMD_ADISC) {
723 ap = (ADISC *) lp;
724 pnn = (struct lpfc_name *) & ap->nodeName;
725 ppn = (struct lpfc_name *) & ap->portName;
726 } else {
727 sp = (struct serv_parm *) lp;
728 pnn = (struct lpfc_name *) & sp->nodeName;
729 ppn = (struct lpfc_name *) & sp->portName;
730 }
731
732 if (get_job_ulpstatus(phba, cmdiocb) == 0 &&
733 lpfc_check_adisc(vport, ndlp, pnn, ppn)) {
734
735 /*
736 * As soon as we send ACC, the remote NPort can
737 * start sending us data. Thus, for SLI4 we must
738 * resume the RPI before the ACC goes out.
739 */
740 if (vport->phba->sli_rev == LPFC_SLI_REV4) {
741 elsiocb = kmalloc(sizeof(struct lpfc_iocbq),
742 GFP_KERNEL);
743 if (elsiocb) {
744 /* Save info from cmd IOCB used in rsp */
745 memcpy((uint8_t *)elsiocb, (uint8_t *)cmdiocb,
746 sizeof(struct lpfc_iocbq));
747
748 /* Save the ELS cmd */
749 elsiocb->drvrTimeout = cmd;
750
751 if (lpfc_sli4_resume_rpi(ndlp,
752 lpfc_mbx_cmpl_resume_rpi,
753 elsiocb))
754 kfree(elsiocb);
755 goto out;
756 }
757 }
758
759 if (cmd == ELS_CMD_ADISC) {
760 lpfc_els_rsp_adisc_acc(vport, cmdiocb, ndlp);
761 } else {
762 lpfc_els_rsp_acc(vport, ELS_CMD_PLOGI, cmdiocb,
763 ndlp, NULL);
764 }
765 out:
766 /* If we are authenticated, move to the proper state.
767 * It is possible an ADISC arrived and the remote nport
768 * is already in MAPPED or UNMAPPED state. Catch this
769 * condition and don't set the nlp_state again because
770 * it causes an unnecessary transport unregister/register.
771 *
772 * Nodes marked for ADISC will move MAPPED or UNMAPPED state
773 * after issuing ADISC
774 */
775 if (ndlp->nlp_type & (NLP_FCP_TARGET | NLP_NVME_TARGET)) {
776 if ((ndlp->nlp_state != NLP_STE_MAPPED_NODE) &&
777 !(ndlp->nlp_flag & NLP_NPR_ADISC))
778 lpfc_nlp_set_state(vport, ndlp,
779 NLP_STE_MAPPED_NODE);
780 }
781
782 return 1;
783 }
784 /* Reject this request because invalid parameters */
785 stat.un.b.lsRjtRsvd0 = 0;
786 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
787 stat.un.b.lsRjtRsnCodeExp = LSEXP_SPARM_OPTIONS;
788 stat.un.b.vendorUnique = 0;
789 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
790
791 /* 1 sec timeout */
792 mod_timer(&ndlp->nlp_delayfunc, jiffies + msecs_to_jiffies(1000));
793
794 spin_lock_irq(&ndlp->lock);
795 ndlp->nlp_flag |= NLP_DELAY_TMO;
796 spin_unlock_irq(&ndlp->lock);
797 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
798 ndlp->nlp_prev_state = ndlp->nlp_state;
799 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
800 return 0;
801 }
802
803 static int
lpfc_rcv_logo(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,struct lpfc_iocbq * cmdiocb,uint32_t els_cmd)804 lpfc_rcv_logo(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
805 struct lpfc_iocbq *cmdiocb, uint32_t els_cmd)
806 {
807 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
808 struct lpfc_hba *phba = vport->phba;
809 struct lpfc_vport **vports;
810 int i, active_vlink_present = 0 ;
811
812 /* Put ndlp in NPR state with 1 sec timeout for plogi, ACC logo */
813 /* Only call LOGO ACC for first LOGO, this avoids sending unnecessary
814 * PLOGIs during LOGO storms from a device.
815 */
816 spin_lock_irq(&ndlp->lock);
817 ndlp->nlp_flag |= NLP_LOGO_ACC;
818 spin_unlock_irq(&ndlp->lock);
819 if (els_cmd == ELS_CMD_PRLO)
820 lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
821 else
822 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
823
824 /* This clause allows the initiator to ACC the LOGO back to the
825 * Fabric Domain Controller. It does deliberately skip all other
826 * steps because some fabrics send RDP requests after logging out
827 * from the initiator.
828 */
829 if (ndlp->nlp_type & NLP_FABRIC &&
830 ((ndlp->nlp_DID & WELL_KNOWN_DID_MASK) != WELL_KNOWN_DID_MASK))
831 return 0;
832
833 /* Notify transport of connectivity loss to trigger cleanup. */
834 if (phba->nvmet_support &&
835 ndlp->nlp_state == NLP_STE_UNMAPPED_NODE)
836 lpfc_nvmet_invalidate_host(phba, ndlp);
837
838 if (ndlp->nlp_DID == Fabric_DID) {
839 if (vport->port_state <= LPFC_FDISC ||
840 vport->fc_flag & FC_PT2PT)
841 goto out;
842 lpfc_linkdown_port(vport);
843 spin_lock_irq(shost->host_lock);
844 vport->fc_flag |= FC_VPORT_LOGO_RCVD;
845 spin_unlock_irq(shost->host_lock);
846 vports = lpfc_create_vport_work_array(phba);
847 if (vports) {
848 for (i = 0; i <= phba->max_vports && vports[i] != NULL;
849 i++) {
850 if ((!(vports[i]->fc_flag &
851 FC_VPORT_LOGO_RCVD)) &&
852 (vports[i]->port_state > LPFC_FDISC)) {
853 active_vlink_present = 1;
854 break;
855 }
856 }
857 lpfc_destroy_vport_work_array(phba, vports);
858 }
859
860 /*
861 * Don't re-instantiate if vport is marked for deletion.
862 * If we are here first then vport_delete is going to wait
863 * for discovery to complete.
864 */
865 if (!(vport->load_flag & FC_UNLOADING) &&
866 active_vlink_present) {
867 /*
868 * If there are other active VLinks present,
869 * re-instantiate the Vlink using FDISC.
870 */
871 mod_timer(&ndlp->nlp_delayfunc,
872 jiffies + msecs_to_jiffies(1000));
873 spin_lock_irq(&ndlp->lock);
874 ndlp->nlp_flag |= NLP_DELAY_TMO;
875 spin_unlock_irq(&ndlp->lock);
876 ndlp->nlp_last_elscmd = ELS_CMD_FDISC;
877 vport->port_state = LPFC_FDISC;
878 } else {
879 spin_lock_irq(shost->host_lock);
880 phba->pport->fc_flag &= ~FC_LOGO_RCVD_DID_CHNG;
881 spin_unlock_irq(shost->host_lock);
882 lpfc_retry_pport_discovery(phba);
883 }
884 } else {
885 lpfc_printf_vlog(vport, KERN_INFO,
886 LOG_NODE | LOG_ELS | LOG_DISCOVERY,
887 "3203 LOGO recover nport x%06x state x%x "
888 "ntype x%x fc_flag x%x\n",
889 ndlp->nlp_DID, ndlp->nlp_state,
890 ndlp->nlp_type, vport->fc_flag);
891
892 /* Special cases for rports that recover post LOGO. */
893 if ((!(ndlp->nlp_type == NLP_FABRIC) &&
894 (ndlp->nlp_type & (NLP_FCP_TARGET | NLP_NVME_TARGET) ||
895 vport->fc_flag & FC_PT2PT)) ||
896 (ndlp->nlp_state >= NLP_STE_ADISC_ISSUE ||
897 ndlp->nlp_state <= NLP_STE_PRLI_ISSUE)) {
898 mod_timer(&ndlp->nlp_delayfunc,
899 jiffies + msecs_to_jiffies(1000 * 1));
900 spin_lock_irq(&ndlp->lock);
901 ndlp->nlp_flag |= NLP_DELAY_TMO;
902 spin_unlock_irq(&ndlp->lock);
903 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
904 lpfc_printf_vlog(vport, KERN_INFO,
905 LOG_NODE | LOG_ELS | LOG_DISCOVERY,
906 "3204 Start nlpdelay on DID x%06x "
907 "nflag x%x lastels x%x ref cnt %u",
908 ndlp->nlp_DID, ndlp->nlp_flag,
909 ndlp->nlp_last_elscmd,
910 kref_read(&ndlp->kref));
911 }
912 }
913 out:
914 /* Unregister from backend, could have been skipped due to ADISC */
915 lpfc_nlp_unreg_node(vport, ndlp);
916
917 ndlp->nlp_prev_state = ndlp->nlp_state;
918 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
919
920 spin_lock_irq(&ndlp->lock);
921 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
922 spin_unlock_irq(&ndlp->lock);
923 /* The driver has to wait until the ACC completes before it continues
924 * processing the LOGO. The action will resume in
925 * lpfc_cmpl_els_logo_acc routine. Since part of processing includes an
926 * unreg_login, the driver waits so the ACC does not get aborted.
927 */
928 return 0;
929 }
930
931 static uint32_t
lpfc_rcv_prli_support_check(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,struct lpfc_iocbq * cmdiocb)932 lpfc_rcv_prli_support_check(struct lpfc_vport *vport,
933 struct lpfc_nodelist *ndlp,
934 struct lpfc_iocbq *cmdiocb)
935 {
936 struct ls_rjt stat;
937 uint32_t *payload;
938 uint32_t cmd;
939
940 payload = cmdiocb->cmd_dmabuf->virt;
941 cmd = *payload;
942 if (vport->phba->nvmet_support) {
943 /* Must be a NVME PRLI */
944 if (cmd == ELS_CMD_PRLI)
945 goto out;
946 } else {
947 /* Initiator mode. */
948 if (!vport->nvmei_support && (cmd == ELS_CMD_NVMEPRLI))
949 goto out;
950 }
951 return 1;
952 out:
953 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NVME_DISC,
954 "6115 Rcv PRLI (%x) check failed: ndlp rpi %d "
955 "state x%x flags x%x\n",
956 cmd, ndlp->nlp_rpi, ndlp->nlp_state,
957 ndlp->nlp_flag);
958 memset(&stat, 0, sizeof(struct ls_rjt));
959 stat.un.b.lsRjtRsnCode = LSRJT_CMD_UNSUPPORTED;
960 stat.un.b.lsRjtRsnCodeExp = LSEXP_REQ_UNSUPPORTED;
961 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb,
962 ndlp, NULL);
963 return 0;
964 }
965
966 static void
lpfc_rcv_prli(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,struct lpfc_iocbq * cmdiocb)967 lpfc_rcv_prli(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
968 struct lpfc_iocbq *cmdiocb)
969 {
970 struct lpfc_hba *phba = vport->phba;
971 struct lpfc_dmabuf *pcmd;
972 uint32_t *lp;
973 PRLI *npr;
974 struct fc_rport *rport = ndlp->rport;
975 u32 roles;
976
977 pcmd = cmdiocb->cmd_dmabuf;
978 lp = (uint32_t *)pcmd->virt;
979 npr = (PRLI *)((uint8_t *)lp + sizeof(uint32_t));
980
981 if ((npr->prliType == PRLI_FCP_TYPE) ||
982 (npr->prliType == PRLI_NVME_TYPE)) {
983 if (npr->initiatorFunc) {
984 if (npr->prliType == PRLI_FCP_TYPE)
985 ndlp->nlp_type |= NLP_FCP_INITIATOR;
986 if (npr->prliType == PRLI_NVME_TYPE)
987 ndlp->nlp_type |= NLP_NVME_INITIATOR;
988 }
989 if (npr->targetFunc) {
990 if (npr->prliType == PRLI_FCP_TYPE)
991 ndlp->nlp_type |= NLP_FCP_TARGET;
992 if (npr->prliType == PRLI_NVME_TYPE)
993 ndlp->nlp_type |= NLP_NVME_TARGET;
994 if (npr->writeXferRdyDis)
995 ndlp->nlp_flag |= NLP_FIRSTBURST;
996 }
997 if (npr->Retry && ndlp->nlp_type &
998 (NLP_FCP_INITIATOR | NLP_FCP_TARGET))
999 ndlp->nlp_fcp_info |= NLP_FCP_2_DEVICE;
1000
1001 if (npr->Retry && phba->nsler &&
1002 ndlp->nlp_type & (NLP_NVME_INITIATOR | NLP_NVME_TARGET))
1003 ndlp->nlp_nvme_info |= NLP_NVME_NSLER;
1004
1005
1006 /* If this driver is in nvme target mode, set the ndlp's fc4
1007 * type to NVME provided the PRLI response claims NVME FC4
1008 * type. Target mode does not issue gft_id so doesn't get
1009 * the fc4 type set until now.
1010 */
1011 if (phba->nvmet_support && (npr->prliType == PRLI_NVME_TYPE)) {
1012 ndlp->nlp_fc4_type |= NLP_FC4_NVME;
1013 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1014 }
1015
1016 /* Fabric Controllers send FCP PRLI as an initiator but should
1017 * not get recognized as FCP type and registered with transport.
1018 */
1019 if (npr->prliType == PRLI_FCP_TYPE &&
1020 !(ndlp->nlp_type & NLP_FABRIC))
1021 ndlp->nlp_fc4_type |= NLP_FC4_FCP;
1022 }
1023 if (rport) {
1024 /* We need to update the rport role values */
1025 roles = FC_RPORT_ROLE_UNKNOWN;
1026 if (ndlp->nlp_type & NLP_FCP_INITIATOR)
1027 roles |= FC_RPORT_ROLE_FCP_INITIATOR;
1028 if (ndlp->nlp_type & NLP_FCP_TARGET)
1029 roles |= FC_RPORT_ROLE_FCP_TARGET;
1030
1031 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
1032 "rport rolechg: role:x%x did:x%x flg:x%x",
1033 roles, ndlp->nlp_DID, ndlp->nlp_flag);
1034
1035 if (vport->cfg_enable_fc4_type != LPFC_ENABLE_NVME)
1036 fc_remote_port_rolechg(rport, roles);
1037 }
1038 }
1039
1040 static uint32_t
lpfc_disc_set_adisc(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp)1041 lpfc_disc_set_adisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
1042 {
1043 if (!(ndlp->nlp_flag & NLP_RPI_REGISTERED)) {
1044 spin_lock_irq(&ndlp->lock);
1045 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
1046 spin_unlock_irq(&ndlp->lock);
1047 return 0;
1048 }
1049
1050 if (!(vport->fc_flag & FC_PT2PT)) {
1051 /* Check config parameter use-adisc or FCP-2 */
1052 if (vport->cfg_use_adisc && ((vport->fc_flag & FC_RSCN_MODE) ||
1053 ((ndlp->nlp_fcp_info & NLP_FCP_2_DEVICE) &&
1054 (ndlp->nlp_type & NLP_FCP_TARGET)))) {
1055 spin_lock_irq(&ndlp->lock);
1056 ndlp->nlp_flag |= NLP_NPR_ADISC;
1057 spin_unlock_irq(&ndlp->lock);
1058 return 1;
1059 }
1060 }
1061
1062 spin_lock_irq(&ndlp->lock);
1063 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
1064 spin_unlock_irq(&ndlp->lock);
1065 lpfc_unreg_rpi(vport, ndlp);
1066 return 0;
1067 }
1068
1069 /**
1070 * lpfc_release_rpi - Release a RPI by issuing unreg_login mailbox cmd.
1071 * @phba : Pointer to lpfc_hba structure.
1072 * @vport: Pointer to lpfc_vport structure.
1073 * @ndlp: Pointer to lpfc_nodelist structure.
1074 * @rpi : rpi to be release.
1075 *
1076 * This function will send a unreg_login mailbox command to the firmware
1077 * to release a rpi.
1078 **/
1079 static void
lpfc_release_rpi(struct lpfc_hba * phba,struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,uint16_t rpi)1080 lpfc_release_rpi(struct lpfc_hba *phba, struct lpfc_vport *vport,
1081 struct lpfc_nodelist *ndlp, uint16_t rpi)
1082 {
1083 LPFC_MBOXQ_t *pmb;
1084 int rc;
1085
1086 /* If there is already an UNREG in progress for this ndlp,
1087 * no need to queue up another one.
1088 */
1089 if (ndlp->nlp_flag & NLP_UNREG_INP) {
1090 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
1091 "1435 release_rpi SKIP UNREG x%x on "
1092 "NPort x%x deferred x%x flg x%x "
1093 "Data: x%px\n",
1094 ndlp->nlp_rpi, ndlp->nlp_DID,
1095 ndlp->nlp_defer_did,
1096 ndlp->nlp_flag, ndlp);
1097 return;
1098 }
1099
1100 pmb = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool,
1101 GFP_KERNEL);
1102 if (!pmb)
1103 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
1104 "2796 mailbox memory allocation failed \n");
1105 else {
1106 lpfc_unreg_login(phba, vport->vpi, rpi, pmb);
1107 pmb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
1108 pmb->vport = vport;
1109 pmb->ctx_ndlp = lpfc_nlp_get(ndlp);
1110 if (!pmb->ctx_ndlp) {
1111 mempool_free(pmb, phba->mbox_mem_pool);
1112 return;
1113 }
1114
1115 if (((ndlp->nlp_DID & Fabric_DID_MASK) != Fabric_DID_MASK) &&
1116 (!(vport->fc_flag & FC_OFFLINE_MODE)))
1117 ndlp->nlp_flag |= NLP_UNREG_INP;
1118
1119 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
1120 "1437 release_rpi UNREG x%x "
1121 "on NPort x%x flg x%x\n",
1122 ndlp->nlp_rpi, ndlp->nlp_DID, ndlp->nlp_flag);
1123
1124 rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);
1125 if (rc == MBX_NOT_FINISHED) {
1126 lpfc_nlp_put(ndlp);
1127 mempool_free(pmb, phba->mbox_mem_pool);
1128 }
1129 }
1130 }
1131
1132 static uint32_t
lpfc_disc_illegal(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1133 lpfc_disc_illegal(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1134 void *arg, uint32_t evt)
1135 {
1136 struct lpfc_hba *phba;
1137 LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg;
1138 uint16_t rpi;
1139
1140 phba = vport->phba;
1141 /* Release the RPI if reglogin completing */
1142 if (!(phba->pport->load_flag & FC_UNLOADING) &&
1143 (evt == NLP_EVT_CMPL_REG_LOGIN) &&
1144 (!pmb->u.mb.mbxStatus)) {
1145 rpi = pmb->u.mb.un.varWords[0];
1146 lpfc_release_rpi(phba, vport, ndlp, rpi);
1147 }
1148 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
1149 "0271 Illegal State Transition: node x%x "
1150 "event x%x, state x%x Data: x%x x%x\n",
1151 ndlp->nlp_DID, evt, ndlp->nlp_state, ndlp->nlp_rpi,
1152 ndlp->nlp_flag);
1153 return ndlp->nlp_state;
1154 }
1155
1156 static uint32_t
lpfc_cmpl_plogi_illegal(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1157 lpfc_cmpl_plogi_illegal(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1158 void *arg, uint32_t evt)
1159 {
1160 /* This transition is only legal if we previously
1161 * rcv'ed a PLOGI. Since we don't want 2 discovery threads
1162 * working on the same NPortID, do nothing for this thread
1163 * to stop it.
1164 */
1165 if (!(ndlp->nlp_flag & NLP_RCV_PLOGI)) {
1166 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
1167 "0272 Illegal State Transition: node x%x "
1168 "event x%x, state x%x Data: x%x x%x\n",
1169 ndlp->nlp_DID, evt, ndlp->nlp_state,
1170 ndlp->nlp_rpi, ndlp->nlp_flag);
1171 }
1172 return ndlp->nlp_state;
1173 }
1174
1175 /* Start of Discovery State Machine routines */
1176
1177 static uint32_t
lpfc_rcv_plogi_unused_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1178 lpfc_rcv_plogi_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1179 void *arg, uint32_t evt)
1180 {
1181 struct lpfc_iocbq *cmdiocb;
1182
1183 cmdiocb = (struct lpfc_iocbq *) arg;
1184
1185 if (lpfc_rcv_plogi(vport, ndlp, cmdiocb)) {
1186 return ndlp->nlp_state;
1187 }
1188 return NLP_STE_FREED_NODE;
1189 }
1190
1191 static uint32_t
lpfc_rcv_els_unused_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1192 lpfc_rcv_els_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1193 void *arg, uint32_t evt)
1194 {
1195 lpfc_issue_els_logo(vport, ndlp, 0);
1196 return ndlp->nlp_state;
1197 }
1198
1199 static uint32_t
lpfc_rcv_logo_unused_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1200 lpfc_rcv_logo_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1201 void *arg, uint32_t evt)
1202 {
1203 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1204
1205 spin_lock_irq(&ndlp->lock);
1206 ndlp->nlp_flag |= NLP_LOGO_ACC;
1207 spin_unlock_irq(&ndlp->lock);
1208 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
1209
1210 return ndlp->nlp_state;
1211 }
1212
1213 static uint32_t
lpfc_cmpl_logo_unused_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1214 lpfc_cmpl_logo_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1215 void *arg, uint32_t evt)
1216 {
1217 return NLP_STE_FREED_NODE;
1218 }
1219
1220 static uint32_t
lpfc_device_rm_unused_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1221 lpfc_device_rm_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1222 void *arg, uint32_t evt)
1223 {
1224 return NLP_STE_FREED_NODE;
1225 }
1226
1227 static uint32_t
lpfc_device_recov_unused_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1228 lpfc_device_recov_unused_node(struct lpfc_vport *vport,
1229 struct lpfc_nodelist *ndlp,
1230 void *arg, uint32_t evt)
1231 {
1232 return ndlp->nlp_state;
1233 }
1234
1235 static uint32_t
lpfc_rcv_plogi_plogi_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1236 lpfc_rcv_plogi_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1237 void *arg, uint32_t evt)
1238 {
1239 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1240 struct lpfc_hba *phba = vport->phba;
1241 struct lpfc_iocbq *cmdiocb = arg;
1242 struct lpfc_dmabuf *pcmd = cmdiocb->cmd_dmabuf;
1243 uint32_t *lp = (uint32_t *) pcmd->virt;
1244 struct serv_parm *sp = (struct serv_parm *) (lp + 1);
1245 struct ls_rjt stat;
1246 int port_cmp;
1247
1248 memset(&stat, 0, sizeof (struct ls_rjt));
1249
1250 /* For a PLOGI, we only accept if our portname is less
1251 * than the remote portname.
1252 */
1253 phba->fc_stat.elsLogiCol++;
1254 port_cmp = memcmp(&vport->fc_portname, &sp->portName,
1255 sizeof(struct lpfc_name));
1256
1257 if (port_cmp >= 0) {
1258 /* Reject this request because the remote node will accept
1259 ours */
1260 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
1261 stat.un.b.lsRjtRsnCodeExp = LSEXP_CMD_IN_PROGRESS;
1262 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
1263 NULL);
1264 } else {
1265 if (lpfc_rcv_plogi(vport, ndlp, cmdiocb) &&
1266 (ndlp->nlp_flag & NLP_NPR_2B_DISC) &&
1267 (vport->num_disc_nodes)) {
1268 spin_lock_irq(&ndlp->lock);
1269 ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
1270 spin_unlock_irq(&ndlp->lock);
1271 /* Check if there are more PLOGIs to be sent */
1272 lpfc_more_plogi(vport);
1273 if (vport->num_disc_nodes == 0) {
1274 spin_lock_irq(shost->host_lock);
1275 vport->fc_flag &= ~FC_NDISC_ACTIVE;
1276 spin_unlock_irq(shost->host_lock);
1277 lpfc_can_disctmo(vport);
1278 lpfc_end_rscn(vport);
1279 }
1280 }
1281 } /* If our portname was less */
1282
1283 return ndlp->nlp_state;
1284 }
1285
1286 static uint32_t
lpfc_rcv_prli_plogi_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1287 lpfc_rcv_prli_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1288 void *arg, uint32_t evt)
1289 {
1290 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1291 struct ls_rjt stat;
1292
1293 memset(&stat, 0, sizeof (struct ls_rjt));
1294 stat.un.b.lsRjtRsnCode = LSRJT_LOGICAL_BSY;
1295 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
1296 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
1297 return ndlp->nlp_state;
1298 }
1299
1300 static uint32_t
lpfc_rcv_logo_plogi_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1301 lpfc_rcv_logo_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1302 void *arg, uint32_t evt)
1303 {
1304 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1305
1306 /* Retrieve RPI from LOGO IOCB. RPI is used for CMD_ABORT_XRI_CN */
1307 if (vport->phba->sli_rev == LPFC_SLI_REV3)
1308 ndlp->nlp_rpi = cmdiocb->iocb.ulpIoTag;
1309 /* software abort outstanding PLOGI */
1310 lpfc_els_abort(vport->phba, ndlp);
1311
1312 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1313 return ndlp->nlp_state;
1314 }
1315
1316 static uint32_t
lpfc_rcv_els_plogi_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1317 lpfc_rcv_els_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1318 void *arg, uint32_t evt)
1319 {
1320 struct lpfc_hba *phba = vport->phba;
1321 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1322
1323 /* software abort outstanding PLOGI */
1324 lpfc_els_abort(phba, ndlp);
1325
1326 if (evt == NLP_EVT_RCV_LOGO) {
1327 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
1328 } else {
1329 lpfc_issue_els_logo(vport, ndlp, 0);
1330 }
1331
1332 /* Put ndlp in npr state set plogi timer for 1 sec */
1333 mod_timer(&ndlp->nlp_delayfunc, jiffies + msecs_to_jiffies(1000 * 1));
1334 spin_lock_irq(&ndlp->lock);
1335 ndlp->nlp_flag |= NLP_DELAY_TMO;
1336 spin_unlock_irq(&ndlp->lock);
1337 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
1338 ndlp->nlp_prev_state = NLP_STE_PLOGI_ISSUE;
1339 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1340
1341 return ndlp->nlp_state;
1342 }
1343
1344 static uint32_t
lpfc_cmpl_plogi_plogi_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1345 lpfc_cmpl_plogi_plogi_issue(struct lpfc_vport *vport,
1346 struct lpfc_nodelist *ndlp,
1347 void *arg,
1348 uint32_t evt)
1349 {
1350 struct lpfc_hba *phba = vport->phba;
1351 struct lpfc_iocbq *cmdiocb, *rspiocb;
1352 struct lpfc_dmabuf *pcmd, *prsp;
1353 uint32_t *lp;
1354 uint32_t vid, flag;
1355 struct serv_parm *sp;
1356 uint32_t ed_tov;
1357 LPFC_MBOXQ_t *mbox;
1358 int rc;
1359 u32 ulp_status;
1360 u32 did;
1361
1362 cmdiocb = (struct lpfc_iocbq *) arg;
1363 rspiocb = cmdiocb->rsp_iocb;
1364
1365 ulp_status = get_job_ulpstatus(phba, rspiocb);
1366
1367 if (ndlp->nlp_flag & NLP_ACC_REGLOGIN) {
1368 /* Recovery from PLOGI collision logic */
1369 return ndlp->nlp_state;
1370 }
1371
1372 if (ulp_status)
1373 goto out;
1374
1375 pcmd = cmdiocb->cmd_dmabuf;
1376
1377 prsp = list_get_first(&pcmd->list, struct lpfc_dmabuf, list);
1378 if (!prsp)
1379 goto out;
1380
1381 lp = (uint32_t *) prsp->virt;
1382 sp = (struct serv_parm *) ((uint8_t *) lp + sizeof (uint32_t));
1383
1384 /* Some switches have FDMI servers returning 0 for WWN */
1385 if ((ndlp->nlp_DID != FDMI_DID) &&
1386 (wwn_to_u64(sp->portName.u.wwn) == 0 ||
1387 wwn_to_u64(sp->nodeName.u.wwn) == 0)) {
1388 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
1389 "0142 PLOGI RSP: Invalid WWN.\n");
1390 goto out;
1391 }
1392 if (!lpfc_check_sparm(vport, ndlp, sp, CLASS3, 0))
1393 goto out;
1394 /* PLOGI chkparm OK */
1395 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
1396 "0121 PLOGI chkparm OK Data: x%x x%x x%x x%x\n",
1397 ndlp->nlp_DID, ndlp->nlp_state,
1398 ndlp->nlp_flag, ndlp->nlp_rpi);
1399 if (vport->cfg_fcp_class == 2 && (sp->cls2.classValid))
1400 ndlp->nlp_fcp_info |= CLASS2;
1401 else
1402 ndlp->nlp_fcp_info |= CLASS3;
1403
1404 ndlp->nlp_class_sup = 0;
1405 if (sp->cls1.classValid)
1406 ndlp->nlp_class_sup |= FC_COS_CLASS1;
1407 if (sp->cls2.classValid)
1408 ndlp->nlp_class_sup |= FC_COS_CLASS2;
1409 if (sp->cls3.classValid)
1410 ndlp->nlp_class_sup |= FC_COS_CLASS3;
1411 if (sp->cls4.classValid)
1412 ndlp->nlp_class_sup |= FC_COS_CLASS4;
1413 ndlp->nlp_maxframe =
1414 ((sp->cmn.bbRcvSizeMsb & 0x0F) << 8) | sp->cmn.bbRcvSizeLsb;
1415
1416 if ((vport->fc_flag & FC_PT2PT) &&
1417 (vport->fc_flag & FC_PT2PT_PLOGI)) {
1418 ed_tov = be32_to_cpu(sp->cmn.e_d_tov);
1419 if (sp->cmn.edtovResolution) {
1420 /* E_D_TOV ticks are in nanoseconds */
1421 ed_tov = (phba->fc_edtov + 999999) / 1000000;
1422 }
1423
1424 ndlp->nlp_flag &= ~NLP_SUPPRESS_RSP;
1425 if ((phba->sli.sli_flag & LPFC_SLI_SUPPRESS_RSP) &&
1426 sp->cmn.valid_vendor_ver_level) {
1427 vid = be32_to_cpu(sp->un.vv.vid);
1428 flag = be32_to_cpu(sp->un.vv.flags);
1429 if ((vid == LPFC_VV_EMLX_ID) &&
1430 (flag & LPFC_VV_SUPPRESS_RSP))
1431 ndlp->nlp_flag |= NLP_SUPPRESS_RSP;
1432 }
1433
1434 /*
1435 * Use the larger EDTOV
1436 * RATOV = 2 * EDTOV for pt-to-pt
1437 */
1438 if (ed_tov > phba->fc_edtov)
1439 phba->fc_edtov = ed_tov;
1440 phba->fc_ratov = (2 * phba->fc_edtov) / 1000;
1441
1442 memcpy(&phba->fc_fabparam, sp, sizeof(struct serv_parm));
1443
1444 /* Issue config_link / reg_vfi to account for updated TOV's */
1445 if (phba->sli_rev == LPFC_SLI_REV4) {
1446 lpfc_issue_reg_vfi(vport);
1447 } else {
1448 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1449 if (!mbox) {
1450 lpfc_printf_vlog(vport, KERN_ERR,
1451 LOG_TRACE_EVENT,
1452 "0133 PLOGI: no memory "
1453 "for config_link "
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 goto out;
1458 }
1459
1460 lpfc_config_link(phba, mbox);
1461
1462 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
1463 mbox->vport = vport;
1464 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
1465 if (rc == MBX_NOT_FINISHED) {
1466 mempool_free(mbox, phba->mbox_mem_pool);
1467 goto out;
1468 }
1469 }
1470 }
1471
1472 lpfc_unreg_rpi(vport, ndlp);
1473
1474 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1475 if (!mbox) {
1476 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
1477 "0018 PLOGI: no memory for reg_login "
1478 "Data: x%x x%x x%x x%x\n",
1479 ndlp->nlp_DID, ndlp->nlp_state,
1480 ndlp->nlp_flag, ndlp->nlp_rpi);
1481 goto out;
1482 }
1483
1484 did = get_job_els_rsp64_did(phba, cmdiocb);
1485
1486 if (lpfc_reg_rpi(phba, vport->vpi, did,
1487 (uint8_t *) sp, mbox, ndlp->nlp_rpi) == 0) {
1488 switch (ndlp->nlp_DID) {
1489 case NameServer_DID:
1490 mbox->mbox_cmpl = lpfc_mbx_cmpl_ns_reg_login;
1491 /* Fabric Controller Node needs these parameters. */
1492 memcpy(&ndlp->fc_sparam, sp, sizeof(struct serv_parm));
1493 break;
1494 case FDMI_DID:
1495 mbox->mbox_cmpl = lpfc_mbx_cmpl_fdmi_reg_login;
1496 break;
1497 default:
1498 ndlp->nlp_flag |= NLP_REG_LOGIN_SEND;
1499 mbox->mbox_cmpl = lpfc_mbx_cmpl_reg_login;
1500 }
1501
1502 mbox->ctx_ndlp = lpfc_nlp_get(ndlp);
1503 if (!mbox->ctx_ndlp)
1504 goto out;
1505
1506 mbox->vport = vport;
1507 if (lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT)
1508 != MBX_NOT_FINISHED) {
1509 lpfc_nlp_set_state(vport, ndlp,
1510 NLP_STE_REG_LOGIN_ISSUE);
1511 return ndlp->nlp_state;
1512 }
1513 if (ndlp->nlp_flag & NLP_REG_LOGIN_SEND)
1514 ndlp->nlp_flag &= ~NLP_REG_LOGIN_SEND;
1515 /* decrement node reference count to the failed mbox
1516 * command
1517 */
1518 lpfc_nlp_put(ndlp);
1519 lpfc_mbox_rsrc_cleanup(phba, mbox, MBOX_THD_UNLOCKED);
1520 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
1521 "0134 PLOGI: cannot issue reg_login "
1522 "Data: x%x x%x x%x x%x\n",
1523 ndlp->nlp_DID, ndlp->nlp_state,
1524 ndlp->nlp_flag, ndlp->nlp_rpi);
1525 } else {
1526 mempool_free(mbox, phba->mbox_mem_pool);
1527
1528 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
1529 "0135 PLOGI: cannot format reg_login "
1530 "Data: x%x x%x x%x x%x\n",
1531 ndlp->nlp_DID, ndlp->nlp_state,
1532 ndlp->nlp_flag, ndlp->nlp_rpi);
1533 }
1534
1535
1536 out:
1537 if (ndlp->nlp_DID == NameServer_DID) {
1538 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
1539 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
1540 "0261 Cannot Register NameServer login\n");
1541 }
1542
1543 /*
1544 ** In case the node reference counter does not go to zero, ensure that
1545 ** the stale state for the node is not processed.
1546 */
1547
1548 ndlp->nlp_prev_state = ndlp->nlp_state;
1549 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1550 return NLP_STE_FREED_NODE;
1551 }
1552
1553 static uint32_t
lpfc_cmpl_logo_plogi_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1554 lpfc_cmpl_logo_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1555 void *arg, uint32_t evt)
1556 {
1557 return ndlp->nlp_state;
1558 }
1559
1560 static uint32_t
lpfc_cmpl_reglogin_plogi_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1561 lpfc_cmpl_reglogin_plogi_issue(struct lpfc_vport *vport,
1562 struct lpfc_nodelist *ndlp, void *arg, uint32_t evt)
1563 {
1564 struct lpfc_hba *phba;
1565 LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg;
1566 MAILBOX_t *mb = &pmb->u.mb;
1567 uint16_t rpi;
1568
1569 phba = vport->phba;
1570 /* Release the RPI */
1571 if (!(phba->pport->load_flag & FC_UNLOADING) &&
1572 !mb->mbxStatus) {
1573 rpi = pmb->u.mb.un.varWords[0];
1574 lpfc_release_rpi(phba, vport, ndlp, rpi);
1575 }
1576 return ndlp->nlp_state;
1577 }
1578
1579 static uint32_t
lpfc_device_rm_plogi_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1580 lpfc_device_rm_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1581 void *arg, uint32_t evt)
1582 {
1583 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1584 spin_lock_irq(&ndlp->lock);
1585 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1586 spin_unlock_irq(&ndlp->lock);
1587 return ndlp->nlp_state;
1588 } else {
1589 /* software abort outstanding PLOGI */
1590 lpfc_els_abort(vport->phba, ndlp);
1591
1592 lpfc_drop_node(vport, ndlp);
1593 return NLP_STE_FREED_NODE;
1594 }
1595 }
1596
1597 static uint32_t
lpfc_device_recov_plogi_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1598 lpfc_device_recov_plogi_issue(struct lpfc_vport *vport,
1599 struct lpfc_nodelist *ndlp,
1600 void *arg,
1601 uint32_t evt)
1602 {
1603 struct lpfc_hba *phba = vport->phba;
1604
1605 /* Don't do anything that will mess up processing of the
1606 * previous RSCN.
1607 */
1608 if (vport->fc_flag & FC_RSCN_DEFERRED)
1609 return ndlp->nlp_state;
1610
1611 /* software abort outstanding PLOGI */
1612 lpfc_els_abort(phba, ndlp);
1613
1614 ndlp->nlp_prev_state = NLP_STE_PLOGI_ISSUE;
1615 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1616 spin_lock_irq(&ndlp->lock);
1617 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1618 spin_unlock_irq(&ndlp->lock);
1619
1620 return ndlp->nlp_state;
1621 }
1622
1623 static uint32_t
lpfc_rcv_plogi_adisc_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1624 lpfc_rcv_plogi_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1625 void *arg, uint32_t evt)
1626 {
1627 struct lpfc_hba *phba = vport->phba;
1628 struct lpfc_iocbq *cmdiocb;
1629
1630 /* software abort outstanding ADISC */
1631 lpfc_els_abort(phba, ndlp);
1632
1633 cmdiocb = (struct lpfc_iocbq *) arg;
1634
1635 if (lpfc_rcv_plogi(vport, ndlp, cmdiocb)) {
1636 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1637 spin_lock_irq(&ndlp->lock);
1638 ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
1639 spin_unlock_irq(&ndlp->lock);
1640 if (vport->num_disc_nodes)
1641 lpfc_more_adisc(vport);
1642 }
1643 return ndlp->nlp_state;
1644 }
1645 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1646 lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
1647 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
1648
1649 return ndlp->nlp_state;
1650 }
1651
1652 static uint32_t
lpfc_rcv_prli_adisc_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1653 lpfc_rcv_prli_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1654 void *arg, uint32_t evt)
1655 {
1656 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1657
1658 if (lpfc_rcv_prli_support_check(vport, ndlp, cmdiocb))
1659 lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1660 return ndlp->nlp_state;
1661 }
1662
1663 static uint32_t
lpfc_rcv_logo_adisc_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1664 lpfc_rcv_logo_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1665 void *arg, uint32_t evt)
1666 {
1667 struct lpfc_hba *phba = vport->phba;
1668 struct lpfc_iocbq *cmdiocb;
1669
1670 cmdiocb = (struct lpfc_iocbq *) arg;
1671
1672 /* software abort outstanding ADISC */
1673 lpfc_els_abort(phba, ndlp);
1674
1675 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1676 return ndlp->nlp_state;
1677 }
1678
1679 static uint32_t
lpfc_rcv_padisc_adisc_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1680 lpfc_rcv_padisc_adisc_issue(struct lpfc_vport *vport,
1681 struct lpfc_nodelist *ndlp,
1682 void *arg, uint32_t evt)
1683 {
1684 struct lpfc_iocbq *cmdiocb;
1685
1686 cmdiocb = (struct lpfc_iocbq *) arg;
1687
1688 lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1689 return ndlp->nlp_state;
1690 }
1691
1692 static uint32_t
lpfc_rcv_prlo_adisc_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1693 lpfc_rcv_prlo_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1694 void *arg, uint32_t evt)
1695 {
1696 struct lpfc_iocbq *cmdiocb;
1697
1698 cmdiocb = (struct lpfc_iocbq *) arg;
1699
1700 /* Treat like rcv logo */
1701 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_PRLO);
1702 return ndlp->nlp_state;
1703 }
1704
1705 static uint32_t
lpfc_cmpl_adisc_adisc_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1706 lpfc_cmpl_adisc_adisc_issue(struct lpfc_vport *vport,
1707 struct lpfc_nodelist *ndlp,
1708 void *arg, uint32_t evt)
1709 {
1710 struct lpfc_hba *phba = vport->phba;
1711 struct lpfc_iocbq *cmdiocb, *rspiocb;
1712 ADISC *ap;
1713 int rc;
1714 u32 ulp_status;
1715
1716 cmdiocb = (struct lpfc_iocbq *) arg;
1717 rspiocb = cmdiocb->rsp_iocb;
1718
1719 ulp_status = get_job_ulpstatus(phba, rspiocb);
1720
1721 ap = (ADISC *)lpfc_check_elscmpl_iocb(phba, cmdiocb, rspiocb);
1722
1723 if ((ulp_status) ||
1724 (!lpfc_check_adisc(vport, ndlp, &ap->nodeName, &ap->portName))) {
1725 /* 1 sec timeout */
1726 mod_timer(&ndlp->nlp_delayfunc,
1727 jiffies + msecs_to_jiffies(1000));
1728 spin_lock_irq(&ndlp->lock);
1729 ndlp->nlp_flag |= NLP_DELAY_TMO;
1730 spin_unlock_irq(&ndlp->lock);
1731 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
1732
1733 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1734 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1735 lpfc_unreg_rpi(vport, ndlp);
1736 return ndlp->nlp_state;
1737 }
1738
1739 if (phba->sli_rev == LPFC_SLI_REV4) {
1740 rc = lpfc_sli4_resume_rpi(ndlp, NULL, NULL);
1741 if (rc) {
1742 /* Stay in state and retry. */
1743 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1744 return ndlp->nlp_state;
1745 }
1746 }
1747
1748 if (ndlp->nlp_type & NLP_FCP_TARGET)
1749 ndlp->nlp_fc4_type |= NLP_FC4_FCP;
1750
1751 if (ndlp->nlp_type & NLP_NVME_TARGET)
1752 ndlp->nlp_fc4_type |= NLP_FC4_NVME;
1753
1754 if (ndlp->nlp_type & (NLP_FCP_TARGET | NLP_NVME_TARGET)) {
1755 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1756 lpfc_nlp_set_state(vport, ndlp, NLP_STE_MAPPED_NODE);
1757 } else {
1758 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1759 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1760 }
1761
1762 return ndlp->nlp_state;
1763 }
1764
1765 static uint32_t
lpfc_device_rm_adisc_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1766 lpfc_device_rm_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1767 void *arg, uint32_t evt)
1768 {
1769 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1770 spin_lock_irq(&ndlp->lock);
1771 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1772 spin_unlock_irq(&ndlp->lock);
1773 return ndlp->nlp_state;
1774 } else {
1775 /* software abort outstanding ADISC */
1776 lpfc_els_abort(vport->phba, ndlp);
1777
1778 lpfc_drop_node(vport, ndlp);
1779 return NLP_STE_FREED_NODE;
1780 }
1781 }
1782
1783 static uint32_t
lpfc_device_recov_adisc_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1784 lpfc_device_recov_adisc_issue(struct lpfc_vport *vport,
1785 struct lpfc_nodelist *ndlp,
1786 void *arg,
1787 uint32_t evt)
1788 {
1789 struct lpfc_hba *phba = vport->phba;
1790
1791 /* Don't do anything that will mess up processing of the
1792 * previous RSCN.
1793 */
1794 if (vport->fc_flag & FC_RSCN_DEFERRED)
1795 return ndlp->nlp_state;
1796
1797 /* software abort outstanding ADISC */
1798 lpfc_els_abort(phba, ndlp);
1799
1800 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1801 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1802 spin_lock_irq(&ndlp->lock);
1803 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1804 spin_unlock_irq(&ndlp->lock);
1805 lpfc_disc_set_adisc(vport, ndlp);
1806 return ndlp->nlp_state;
1807 }
1808
1809 static uint32_t
lpfc_rcv_plogi_reglogin_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1810 lpfc_rcv_plogi_reglogin_issue(struct lpfc_vport *vport,
1811 struct lpfc_nodelist *ndlp,
1812 void *arg,
1813 uint32_t evt)
1814 {
1815 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1816
1817 lpfc_rcv_plogi(vport, ndlp, cmdiocb);
1818 return ndlp->nlp_state;
1819 }
1820
1821 static uint32_t
lpfc_rcv_prli_reglogin_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1822 lpfc_rcv_prli_reglogin_issue(struct lpfc_vport *vport,
1823 struct lpfc_nodelist *ndlp,
1824 void *arg,
1825 uint32_t evt)
1826 {
1827 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1828 struct ls_rjt stat;
1829
1830 if (!lpfc_rcv_prli_support_check(vport, ndlp, cmdiocb)) {
1831 return ndlp->nlp_state;
1832 }
1833 if (vport->phba->nvmet_support) {
1834 /* NVME Target mode. Handle and respond to the PRLI and
1835 * transition to UNMAPPED provided the RPI has completed
1836 * registration.
1837 */
1838 if (ndlp->nlp_flag & NLP_RPI_REGISTERED) {
1839 lpfc_rcv_prli(vport, ndlp, cmdiocb);
1840 lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1841 } else {
1842 /* RPI registration has not completed. Reject the PRLI
1843 * to prevent an illegal state transition when the
1844 * rpi registration does complete.
1845 */
1846 memset(&stat, 0, sizeof(struct ls_rjt));
1847 stat.un.b.lsRjtRsnCode = LSRJT_LOGICAL_BSY;
1848 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
1849 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb,
1850 ndlp, NULL);
1851 return ndlp->nlp_state;
1852 }
1853 } else {
1854 /* Initiator mode. */
1855 lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1856 }
1857 return ndlp->nlp_state;
1858 }
1859
1860 static uint32_t
lpfc_rcv_logo_reglogin_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1861 lpfc_rcv_logo_reglogin_issue(struct lpfc_vport *vport,
1862 struct lpfc_nodelist *ndlp,
1863 void *arg,
1864 uint32_t evt)
1865 {
1866 struct lpfc_hba *phba = vport->phba;
1867 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1868 LPFC_MBOXQ_t *mb;
1869 LPFC_MBOXQ_t *nextmb;
1870
1871 cmdiocb = (struct lpfc_iocbq *) arg;
1872
1873 /* cleanup any ndlp on mbox q waiting for reglogin cmpl */
1874 if ((mb = phba->sli.mbox_active)) {
1875 if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) &&
1876 (ndlp == (struct lpfc_nodelist *)mb->ctx_ndlp)) {
1877 ndlp->nlp_flag &= ~NLP_REG_LOGIN_SEND;
1878 lpfc_nlp_put(ndlp);
1879 mb->ctx_ndlp = NULL;
1880 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
1881 }
1882 }
1883
1884 spin_lock_irq(&phba->hbalock);
1885 list_for_each_entry_safe(mb, nextmb, &phba->sli.mboxq, list) {
1886 if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) &&
1887 (ndlp == (struct lpfc_nodelist *)mb->ctx_ndlp)) {
1888 ndlp->nlp_flag &= ~NLP_REG_LOGIN_SEND;
1889 lpfc_nlp_put(ndlp);
1890 list_del(&mb->list);
1891 phba->sli.mboxq_cnt--;
1892 lpfc_mbox_rsrc_cleanup(phba, mb, MBOX_THD_LOCKED);
1893 }
1894 }
1895 spin_unlock_irq(&phba->hbalock);
1896
1897 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1898 return ndlp->nlp_state;
1899 }
1900
1901 static uint32_t
lpfc_rcv_padisc_reglogin_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1902 lpfc_rcv_padisc_reglogin_issue(struct lpfc_vport *vport,
1903 struct lpfc_nodelist *ndlp,
1904 void *arg,
1905 uint32_t evt)
1906 {
1907 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1908
1909 lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1910 return ndlp->nlp_state;
1911 }
1912
1913 static uint32_t
lpfc_rcv_prlo_reglogin_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1914 lpfc_rcv_prlo_reglogin_issue(struct lpfc_vport *vport,
1915 struct lpfc_nodelist *ndlp,
1916 void *arg,
1917 uint32_t evt)
1918 {
1919 struct lpfc_iocbq *cmdiocb;
1920
1921 cmdiocb = (struct lpfc_iocbq *) arg;
1922 lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
1923 return ndlp->nlp_state;
1924 }
1925
1926 static uint32_t
lpfc_cmpl_reglogin_reglogin_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1927 lpfc_cmpl_reglogin_reglogin_issue(struct lpfc_vport *vport,
1928 struct lpfc_nodelist *ndlp,
1929 void *arg,
1930 uint32_t evt)
1931 {
1932 struct lpfc_hba *phba = vport->phba;
1933 LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg;
1934 MAILBOX_t *mb = &pmb->u.mb;
1935 uint32_t did = mb->un.varWords[1];
1936
1937 if (mb->mbxStatus) {
1938 /* RegLogin failed */
1939 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
1940 "0246 RegLogin failed Data: x%x x%x x%x x%x "
1941 "x%x\n",
1942 did, mb->mbxStatus, vport->port_state,
1943 mb->un.varRegLogin.vpi,
1944 mb->un.varRegLogin.rpi);
1945 /*
1946 * If RegLogin failed due to lack of HBA resources do not
1947 * retry discovery.
1948 */
1949 if (mb->mbxStatus == MBXERR_RPI_FULL) {
1950 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1951 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1952 return ndlp->nlp_state;
1953 }
1954
1955 /* Put ndlp in npr state set plogi timer for 1 sec */
1956 mod_timer(&ndlp->nlp_delayfunc,
1957 jiffies + msecs_to_jiffies(1000 * 1));
1958 spin_lock_irq(&ndlp->lock);
1959 ndlp->nlp_flag |= NLP_DELAY_TMO;
1960 spin_unlock_irq(&ndlp->lock);
1961 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
1962
1963 lpfc_issue_els_logo(vport, ndlp, 0);
1964 return ndlp->nlp_state;
1965 }
1966
1967 /* SLI4 ports have preallocated logical rpis. */
1968 if (phba->sli_rev < LPFC_SLI_REV4)
1969 ndlp->nlp_rpi = mb->un.varWords[0];
1970
1971 ndlp->nlp_flag |= NLP_RPI_REGISTERED;
1972
1973 /* Only if we are not a fabric nport do we issue PRLI */
1974 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
1975 "3066 RegLogin Complete on x%x x%x x%x\n",
1976 did, ndlp->nlp_type, ndlp->nlp_fc4_type);
1977 if (!(ndlp->nlp_type & NLP_FABRIC) &&
1978 (phba->nvmet_support == 0)) {
1979 /* The driver supports FCP and NVME concurrently. If the
1980 * ndlp's nlp_fc4_type is still zero, the driver doesn't
1981 * know what PRLI to send yet. Figure that out now and
1982 * call PRLI depending on the outcome.
1983 */
1984 if (vport->fc_flag & FC_PT2PT) {
1985 /* If we are pt2pt, there is no Fabric to determine
1986 * the FC4 type of the remote nport. So if NVME
1987 * is configured try it.
1988 */
1989 ndlp->nlp_fc4_type |= NLP_FC4_FCP;
1990 if ((!(vport->fc_flag & FC_PT2PT_NO_NVME)) &&
1991 (vport->cfg_enable_fc4_type == LPFC_ENABLE_BOTH ||
1992 vport->cfg_enable_fc4_type == LPFC_ENABLE_NVME)) {
1993 ndlp->nlp_fc4_type |= NLP_FC4_NVME;
1994 /* We need to update the localport also */
1995 lpfc_nvme_update_localport(vport);
1996 }
1997
1998 } else if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
1999 ndlp->nlp_fc4_type |= NLP_FC4_FCP;
2000
2001 } else if (ndlp->nlp_fc4_type == 0) {
2002 /* If we are only configured for FCP, the driver
2003 * should just issue PRLI for FCP. Otherwise issue
2004 * GFT_ID to determine if remote port supports NVME.
2005 */
2006 if (vport->cfg_enable_fc4_type != LPFC_ENABLE_FCP) {
2007 lpfc_ns_cmd(vport, SLI_CTNS_GFT_ID, 0,
2008 ndlp->nlp_DID);
2009 return ndlp->nlp_state;
2010 }
2011 ndlp->nlp_fc4_type = NLP_FC4_FCP;
2012 }
2013
2014 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
2015 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PRLI_ISSUE);
2016 if (lpfc_issue_els_prli(vport, ndlp, 0)) {
2017 lpfc_issue_els_logo(vport, ndlp, 0);
2018 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
2019 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
2020 }
2021 } else {
2022 if ((vport->fc_flag & FC_PT2PT) && phba->nvmet_support)
2023 phba->targetport->port_id = vport->fc_myDID;
2024
2025 /* Only Fabric ports should transition. NVME target
2026 * must complete PRLI.
2027 */
2028 if (ndlp->nlp_type & NLP_FABRIC) {
2029 ndlp->nlp_fc4_type &= ~NLP_FC4_FCP;
2030 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
2031 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
2032 }
2033 }
2034 return ndlp->nlp_state;
2035 }
2036
2037 static uint32_t
lpfc_device_rm_reglogin_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2038 lpfc_device_rm_reglogin_issue(struct lpfc_vport *vport,
2039 struct lpfc_nodelist *ndlp,
2040 void *arg,
2041 uint32_t evt)
2042 {
2043 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
2044 spin_lock_irq(&ndlp->lock);
2045 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
2046 spin_unlock_irq(&ndlp->lock);
2047 return ndlp->nlp_state;
2048 } else {
2049 lpfc_drop_node(vport, ndlp);
2050 return NLP_STE_FREED_NODE;
2051 }
2052 }
2053
2054 static uint32_t
lpfc_device_recov_reglogin_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2055 lpfc_device_recov_reglogin_issue(struct lpfc_vport *vport,
2056 struct lpfc_nodelist *ndlp,
2057 void *arg,
2058 uint32_t evt)
2059 {
2060 /* Don't do anything that will mess up processing of the
2061 * previous RSCN.
2062 */
2063 if (vport->fc_flag & FC_RSCN_DEFERRED)
2064 return ndlp->nlp_state;
2065
2066 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
2067 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
2068 spin_lock_irq(&ndlp->lock);
2069
2070 /* If we are a target we won't immediately transition into PRLI,
2071 * so if REG_LOGIN already completed we don't need to ignore it.
2072 */
2073 if (!(ndlp->nlp_flag & NLP_RPI_REGISTERED) ||
2074 !vport->phba->nvmet_support)
2075 ndlp->nlp_flag |= NLP_IGNR_REG_CMPL;
2076
2077 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
2078 spin_unlock_irq(&ndlp->lock);
2079 lpfc_disc_set_adisc(vport, ndlp);
2080 return ndlp->nlp_state;
2081 }
2082
2083 static uint32_t
lpfc_rcv_plogi_prli_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2084 lpfc_rcv_plogi_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2085 void *arg, uint32_t evt)
2086 {
2087 struct lpfc_iocbq *cmdiocb;
2088
2089 cmdiocb = (struct lpfc_iocbq *) arg;
2090
2091 lpfc_rcv_plogi(vport, ndlp, cmdiocb);
2092 return ndlp->nlp_state;
2093 }
2094
2095 static uint32_t
lpfc_rcv_prli_prli_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2096 lpfc_rcv_prli_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2097 void *arg, uint32_t evt)
2098 {
2099 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2100
2101 if (!lpfc_rcv_prli_support_check(vport, ndlp, cmdiocb))
2102 return ndlp->nlp_state;
2103 lpfc_rcv_prli(vport, ndlp, cmdiocb);
2104 lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
2105 return ndlp->nlp_state;
2106 }
2107
2108 static uint32_t
lpfc_rcv_logo_prli_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2109 lpfc_rcv_logo_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2110 void *arg, uint32_t evt)
2111 {
2112 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2113
2114 /* Software abort outstanding PRLI before sending acc */
2115 lpfc_els_abort(vport->phba, ndlp);
2116
2117 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
2118 return ndlp->nlp_state;
2119 }
2120
2121 static uint32_t
lpfc_rcv_padisc_prli_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2122 lpfc_rcv_padisc_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2123 void *arg, uint32_t evt)
2124 {
2125 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2126
2127 lpfc_rcv_padisc(vport, ndlp, cmdiocb);
2128 return ndlp->nlp_state;
2129 }
2130
2131 /* This routine is envoked when we rcv a PRLO request from a nport
2132 * we are logged into. We should send back a PRLO rsp setting the
2133 * appropriate bits.
2134 * NEXT STATE = PRLI_ISSUE
2135 */
2136 static uint32_t
lpfc_rcv_prlo_prli_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2137 lpfc_rcv_prlo_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2138 void *arg, uint32_t evt)
2139 {
2140 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2141
2142 lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
2143 return ndlp->nlp_state;
2144 }
2145
2146 static uint32_t
lpfc_cmpl_prli_prli_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2147 lpfc_cmpl_prli_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2148 void *arg, uint32_t evt)
2149 {
2150 struct lpfc_iocbq *cmdiocb, *rspiocb;
2151 struct lpfc_hba *phba = vport->phba;
2152 PRLI *npr;
2153 struct lpfc_nvme_prli *nvpr;
2154 void *temp_ptr;
2155 u32 ulp_status;
2156 bool acc_imode_sps = false;
2157
2158 cmdiocb = (struct lpfc_iocbq *) arg;
2159 rspiocb = cmdiocb->rsp_iocb;
2160
2161 ulp_status = get_job_ulpstatus(phba, rspiocb);
2162
2163 /* A solicited PRLI is either FCP or NVME. The PRLI cmd/rsp
2164 * format is different so NULL the two PRLI types so that the
2165 * driver correctly gets the correct context.
2166 */
2167 npr = NULL;
2168 nvpr = NULL;
2169 temp_ptr = lpfc_check_elscmpl_iocb(phba, cmdiocb, rspiocb);
2170 if (cmdiocb->cmd_flag & LPFC_PRLI_FCP_REQ)
2171 npr = (PRLI *) temp_ptr;
2172 else if (cmdiocb->cmd_flag & LPFC_PRLI_NVME_REQ)
2173 nvpr = (struct lpfc_nvme_prli *) temp_ptr;
2174
2175 if (ulp_status) {
2176 if ((vport->port_type == LPFC_NPIV_PORT) &&
2177 vport->cfg_restrict_login) {
2178 goto out;
2179 }
2180
2181 /* Adjust the nlp_type accordingly if the PRLI failed */
2182 if (npr)
2183 ndlp->nlp_fc4_type &= ~NLP_FC4_FCP;
2184 if (nvpr)
2185 ndlp->nlp_fc4_type &= ~NLP_FC4_NVME;
2186
2187 /* We can't set the DSM state till BOTH PRLIs complete */
2188 goto out_err;
2189 }
2190
2191 if (npr && npr->prliType == PRLI_FCP_TYPE) {
2192 lpfc_printf_vlog(vport, KERN_INFO,
2193 LOG_ELS | LOG_NODE | LOG_DISCOVERY,
2194 "6028 FCP NPR PRLI Cmpl Init %d Target %d "
2195 "EIP %d AccCode x%x\n",
2196 npr->initiatorFunc, npr->targetFunc,
2197 npr->estabImagePair, npr->acceptRspCode);
2198
2199 if (npr->acceptRspCode == PRLI_INV_SRV_PARM) {
2200 /* Strict initiators don't establish an image pair. */
2201 if (npr->initiatorFunc && !npr->targetFunc &&
2202 !npr->estabImagePair)
2203 acc_imode_sps = true;
2204 }
2205
2206 if (npr->acceptRspCode == PRLI_REQ_EXECUTED || acc_imode_sps) {
2207 if (npr->initiatorFunc)
2208 ndlp->nlp_type |= NLP_FCP_INITIATOR;
2209 if (npr->targetFunc) {
2210 ndlp->nlp_type |= NLP_FCP_TARGET;
2211 if (npr->writeXferRdyDis)
2212 ndlp->nlp_flag |= NLP_FIRSTBURST;
2213 }
2214 if (npr->Retry)
2215 ndlp->nlp_fcp_info |= NLP_FCP_2_DEVICE;
2216 }
2217 } else if (nvpr &&
2218 (bf_get_be32(prli_acc_rsp_code, nvpr) ==
2219 PRLI_REQ_EXECUTED) &&
2220 (bf_get_be32(prli_type_code, nvpr) ==
2221 PRLI_NVME_TYPE)) {
2222
2223 /* Complete setting up the remote ndlp personality. */
2224 if (bf_get_be32(prli_init, nvpr))
2225 ndlp->nlp_type |= NLP_NVME_INITIATOR;
2226
2227 if (phba->nsler && bf_get_be32(prli_nsler, nvpr) &&
2228 bf_get_be32(prli_conf, nvpr))
2229
2230 ndlp->nlp_nvme_info |= NLP_NVME_NSLER;
2231 else
2232 ndlp->nlp_nvme_info &= ~NLP_NVME_NSLER;
2233
2234 /* Target driver cannot solicit NVME FB. */
2235 if (bf_get_be32(prli_tgt, nvpr)) {
2236 /* Complete the nvme target roles. The transport
2237 * needs to know if the rport is capable of
2238 * discovery in addition to its role.
2239 */
2240 ndlp->nlp_type |= NLP_NVME_TARGET;
2241 if (bf_get_be32(prli_disc, nvpr))
2242 ndlp->nlp_type |= NLP_NVME_DISCOVERY;
2243
2244 /*
2245 * If prli_fba is set, the Target supports FirstBurst.
2246 * If prli_fb_sz is 0, the FirstBurst size is unlimited,
2247 * otherwise it defines the actual size supported by
2248 * the NVME Target.
2249 */
2250 if ((bf_get_be32(prli_fba, nvpr) == 1) &&
2251 (phba->cfg_nvme_enable_fb) &&
2252 (!phba->nvmet_support)) {
2253 /* Both sides support FB. The target's first
2254 * burst size is a 512 byte encoded value.
2255 */
2256 ndlp->nlp_flag |= NLP_FIRSTBURST;
2257 ndlp->nvme_fb_size = bf_get_be32(prli_fb_sz,
2258 nvpr);
2259
2260 /* Expressed in units of 512 bytes */
2261 if (ndlp->nvme_fb_size)
2262 ndlp->nvme_fb_size <<=
2263 LPFC_NVME_FB_SHIFT;
2264 else
2265 ndlp->nvme_fb_size = LPFC_NVME_MAX_FB;
2266 }
2267 }
2268
2269 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_DISC,
2270 "6029 NVME PRLI Cmpl w1 x%08x "
2271 "w4 x%08x w5 x%08x flag x%x, "
2272 "fcp_info x%x nlp_type x%x\n",
2273 be32_to_cpu(nvpr->word1),
2274 be32_to_cpu(nvpr->word4),
2275 be32_to_cpu(nvpr->word5),
2276 ndlp->nlp_flag, ndlp->nlp_fcp_info,
2277 ndlp->nlp_type);
2278 }
2279 if (!(ndlp->nlp_type & NLP_FCP_TARGET) &&
2280 (vport->port_type == LPFC_NPIV_PORT) &&
2281 vport->cfg_restrict_login) {
2282 out:
2283 spin_lock_irq(&ndlp->lock);
2284 ndlp->nlp_flag |= NLP_TARGET_REMOVE;
2285 spin_unlock_irq(&ndlp->lock);
2286 lpfc_issue_els_logo(vport, ndlp, 0);
2287
2288 ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
2289 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
2290 return ndlp->nlp_state;
2291 }
2292
2293 out_err:
2294 /* The ndlp state cannot move to MAPPED or UNMAPPED before all PRLIs
2295 * are complete.
2296 */
2297 if (ndlp->fc4_prli_sent == 0) {
2298 ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
2299 if (ndlp->nlp_type & (NLP_FCP_TARGET | NLP_NVME_TARGET))
2300 lpfc_nlp_set_state(vport, ndlp, NLP_STE_MAPPED_NODE);
2301 else if (ndlp->nlp_type &
2302 (NLP_FCP_INITIATOR | NLP_NVME_INITIATOR))
2303 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
2304 } else
2305 lpfc_printf_vlog(vport,
2306 KERN_INFO, LOG_ELS,
2307 "3067 PRLI's still outstanding "
2308 "on x%06x - count %d, Pend Node Mode "
2309 "transition...\n",
2310 ndlp->nlp_DID, ndlp->fc4_prli_sent);
2311
2312 return ndlp->nlp_state;
2313 }
2314
2315 /*! lpfc_device_rm_prli_issue
2316 *
2317 * \pre
2318 * \post
2319 * \param phba
2320 * \param ndlp
2321 * \param arg
2322 * \param evt
2323 * \return uint32_t
2324 *
2325 * \b Description:
2326 * This routine is envoked when we a request to remove a nport we are in the
2327 * process of PRLIing. We should software abort outstanding prli, unreg
2328 * login, send a logout. We will change node state to UNUSED_NODE, put it
2329 * on plogi list so it can be freed when LOGO completes.
2330 *
2331 */
2332
2333 static uint32_t
lpfc_device_rm_prli_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2334 lpfc_device_rm_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2335 void *arg, uint32_t evt)
2336 {
2337 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
2338 spin_lock_irq(&ndlp->lock);
2339 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
2340 spin_unlock_irq(&ndlp->lock);
2341 return ndlp->nlp_state;
2342 } else {
2343 /* software abort outstanding PLOGI */
2344 lpfc_els_abort(vport->phba, ndlp);
2345
2346 lpfc_drop_node(vport, ndlp);
2347 return NLP_STE_FREED_NODE;
2348 }
2349 }
2350
2351
2352 /*! lpfc_device_recov_prli_issue
2353 *
2354 * \pre
2355 * \post
2356 * \param phba
2357 * \param ndlp
2358 * \param arg
2359 * \param evt
2360 * \return uint32_t
2361 *
2362 * \b Description:
2363 * The routine is envoked when the state of a device is unknown, like
2364 * during a link down. We should remove the nodelist entry from the
2365 * unmapped list, issue a UNREG_LOGIN, do a software abort of the
2366 * outstanding PRLI command, then free the node entry.
2367 */
2368 static uint32_t
lpfc_device_recov_prli_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2369 lpfc_device_recov_prli_issue(struct lpfc_vport *vport,
2370 struct lpfc_nodelist *ndlp,
2371 void *arg,
2372 uint32_t evt)
2373 {
2374 struct lpfc_hba *phba = vport->phba;
2375
2376 /* Don't do anything that will mess up processing of the
2377 * previous RSCN.
2378 */
2379 if (vport->fc_flag & FC_RSCN_DEFERRED)
2380 return ndlp->nlp_state;
2381
2382 /* software abort outstanding PRLI */
2383 lpfc_els_abort(phba, ndlp);
2384
2385 ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
2386 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
2387 spin_lock_irq(&ndlp->lock);
2388 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
2389 spin_unlock_irq(&ndlp->lock);
2390 lpfc_disc_set_adisc(vport, ndlp);
2391 return ndlp->nlp_state;
2392 }
2393
2394 static uint32_t
lpfc_rcv_plogi_logo_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2395 lpfc_rcv_plogi_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2396 void *arg, uint32_t evt)
2397 {
2398 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *)arg;
2399 struct ls_rjt stat;
2400
2401 memset(&stat, 0, sizeof(struct ls_rjt));
2402 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
2403 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
2404 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
2405 return ndlp->nlp_state;
2406 }
2407
2408 static uint32_t
lpfc_rcv_prli_logo_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2409 lpfc_rcv_prli_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2410 void *arg, uint32_t evt)
2411 {
2412 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *)arg;
2413 struct ls_rjt stat;
2414
2415 memset(&stat, 0, sizeof(struct ls_rjt));
2416 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
2417 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
2418 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
2419 return ndlp->nlp_state;
2420 }
2421
2422 static uint32_t
lpfc_rcv_logo_logo_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2423 lpfc_rcv_logo_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2424 void *arg, uint32_t evt)
2425 {
2426 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *)arg;
2427
2428 spin_lock_irq(&ndlp->lock);
2429 ndlp->nlp_flag |= NLP_LOGO_ACC;
2430 spin_unlock_irq(&ndlp->lock);
2431 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
2432 return ndlp->nlp_state;
2433 }
2434
2435 static uint32_t
lpfc_rcv_padisc_logo_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2436 lpfc_rcv_padisc_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2437 void *arg, uint32_t evt)
2438 {
2439 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *)arg;
2440 struct ls_rjt stat;
2441
2442 memset(&stat, 0, sizeof(struct ls_rjt));
2443 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
2444 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
2445 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
2446 return ndlp->nlp_state;
2447 }
2448
2449 static uint32_t
lpfc_rcv_prlo_logo_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2450 lpfc_rcv_prlo_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2451 void *arg, uint32_t evt)
2452 {
2453 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *)arg;
2454 struct ls_rjt stat;
2455
2456 memset(&stat, 0, sizeof(struct ls_rjt));
2457 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
2458 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
2459 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
2460 return ndlp->nlp_state;
2461 }
2462
2463 static uint32_t
lpfc_cmpl_logo_logo_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2464 lpfc_cmpl_logo_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2465 void *arg, uint32_t evt)
2466 {
2467 ndlp->nlp_prev_state = NLP_STE_LOGO_ISSUE;
2468 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
2469 spin_lock_irq(&ndlp->lock);
2470 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
2471 spin_unlock_irq(&ndlp->lock);
2472 lpfc_disc_set_adisc(vport, ndlp);
2473 return ndlp->nlp_state;
2474 }
2475
2476 static uint32_t
lpfc_device_rm_logo_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2477 lpfc_device_rm_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2478 void *arg, uint32_t evt)
2479 {
2480 /*
2481 * DevLoss has timed out and is calling for Device Remove.
2482 * In this case, abort the LOGO and cleanup the ndlp
2483 */
2484
2485 lpfc_unreg_rpi(vport, ndlp);
2486 /* software abort outstanding PLOGI */
2487 lpfc_els_abort(vport->phba, ndlp);
2488 lpfc_drop_node(vport, ndlp);
2489 return NLP_STE_FREED_NODE;
2490 }
2491
2492 static uint32_t
lpfc_device_recov_logo_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2493 lpfc_device_recov_logo_issue(struct lpfc_vport *vport,
2494 struct lpfc_nodelist *ndlp,
2495 void *arg, uint32_t evt)
2496 {
2497 /*
2498 * Device Recovery events have no meaning for a node with a LOGO
2499 * outstanding. The LOGO has to complete first and handle the
2500 * node from that point.
2501 */
2502 return ndlp->nlp_state;
2503 }
2504
2505 static uint32_t
lpfc_rcv_plogi_unmap_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2506 lpfc_rcv_plogi_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2507 void *arg, uint32_t evt)
2508 {
2509 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2510
2511 lpfc_rcv_plogi(vport, ndlp, cmdiocb);
2512 return ndlp->nlp_state;
2513 }
2514
2515 static uint32_t
lpfc_rcv_prli_unmap_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2516 lpfc_rcv_prli_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2517 void *arg, uint32_t evt)
2518 {
2519 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2520
2521 if (!lpfc_rcv_prli_support_check(vport, ndlp, cmdiocb))
2522 return ndlp->nlp_state;
2523
2524 lpfc_rcv_prli(vport, ndlp, cmdiocb);
2525 lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
2526 return ndlp->nlp_state;
2527 }
2528
2529 static uint32_t
lpfc_rcv_logo_unmap_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2530 lpfc_rcv_logo_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2531 void *arg, uint32_t evt)
2532 {
2533 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2534
2535 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
2536 return ndlp->nlp_state;
2537 }
2538
2539 static uint32_t
lpfc_rcv_padisc_unmap_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2540 lpfc_rcv_padisc_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2541 void *arg, uint32_t evt)
2542 {
2543 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2544
2545 lpfc_rcv_padisc(vport, ndlp, cmdiocb);
2546 return ndlp->nlp_state;
2547 }
2548
2549 static uint32_t
lpfc_rcv_prlo_unmap_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2550 lpfc_rcv_prlo_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2551 void *arg, uint32_t evt)
2552 {
2553 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2554
2555 lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
2556 return ndlp->nlp_state;
2557 }
2558
2559 static uint32_t
lpfc_device_rm_unmap_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2560 lpfc_device_rm_unmap_node(struct lpfc_vport *vport,
2561 struct lpfc_nodelist *ndlp,
2562 void *arg,
2563 uint32_t evt)
2564 {
2565 lpfc_drop_node(vport, ndlp);
2566 return NLP_STE_FREED_NODE;
2567 }
2568
2569 static uint32_t
lpfc_device_recov_unmap_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2570 lpfc_device_recov_unmap_node(struct lpfc_vport *vport,
2571 struct lpfc_nodelist *ndlp,
2572 void *arg,
2573 uint32_t evt)
2574 {
2575 ndlp->nlp_prev_state = NLP_STE_UNMAPPED_NODE;
2576 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
2577 spin_lock_irq(&ndlp->lock);
2578 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
2579 ndlp->nlp_fc4_type &= ~(NLP_FC4_FCP | NLP_FC4_NVME);
2580 spin_unlock_irq(&ndlp->lock);
2581 lpfc_disc_set_adisc(vport, ndlp);
2582
2583 return ndlp->nlp_state;
2584 }
2585
2586 static uint32_t
lpfc_rcv_plogi_mapped_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2587 lpfc_rcv_plogi_mapped_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 lpfc_rcv_plogi(vport, ndlp, cmdiocb);
2593 return ndlp->nlp_state;
2594 }
2595
2596 static uint32_t
lpfc_rcv_prli_mapped_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2597 lpfc_rcv_prli_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2598 void *arg, uint32_t evt)
2599 {
2600 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2601
2602 if (!lpfc_rcv_prli_support_check(vport, ndlp, cmdiocb))
2603 return ndlp->nlp_state;
2604 lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
2605 return ndlp->nlp_state;
2606 }
2607
2608 static uint32_t
lpfc_rcv_logo_mapped_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2609 lpfc_rcv_logo_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2610 void *arg, uint32_t evt)
2611 {
2612 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2613
2614 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
2615 return ndlp->nlp_state;
2616 }
2617
2618 static uint32_t
lpfc_rcv_padisc_mapped_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2619 lpfc_rcv_padisc_mapped_node(struct lpfc_vport *vport,
2620 struct lpfc_nodelist *ndlp,
2621 void *arg, uint32_t evt)
2622 {
2623 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2624
2625 lpfc_rcv_padisc(vport, ndlp, cmdiocb);
2626 return ndlp->nlp_state;
2627 }
2628
2629 static uint32_t
lpfc_rcv_prlo_mapped_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2630 lpfc_rcv_prlo_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2631 void *arg, uint32_t evt)
2632 {
2633 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2634
2635 /* flush the target */
2636 lpfc_sli_abort_iocb(vport, ndlp->nlp_sid, 0, LPFC_CTX_TGT);
2637
2638 /* Send PRLO_ACC */
2639 spin_lock_irq(&ndlp->lock);
2640 ndlp->nlp_flag |= NLP_LOGO_ACC;
2641 spin_unlock_irq(&ndlp->lock);
2642 lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
2643
2644 /* Save ELS_CMD_PRLO as the last elscmd and then set to NPR.
2645 * lpfc_cmpl_els_logo_acc is expected to restart discovery.
2646 */
2647 ndlp->nlp_last_elscmd = ELS_CMD_PRLO;
2648 ndlp->nlp_prev_state = ndlp->nlp_state;
2649
2650 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE | LOG_ELS | LOG_DISCOVERY,
2651 "3422 DID x%06x nflag x%x lastels x%x ref cnt %u\n",
2652 ndlp->nlp_DID, ndlp->nlp_flag,
2653 ndlp->nlp_last_elscmd,
2654 kref_read(&ndlp->kref));
2655
2656 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
2657
2658 return ndlp->nlp_state;
2659 }
2660
2661 static uint32_t
lpfc_device_recov_mapped_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2662 lpfc_device_recov_mapped_node(struct lpfc_vport *vport,
2663 struct lpfc_nodelist *ndlp,
2664 void *arg,
2665 uint32_t evt)
2666 {
2667 lpfc_disc_set_adisc(vport, ndlp);
2668
2669 ndlp->nlp_prev_state = NLP_STE_MAPPED_NODE;
2670 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
2671 spin_lock_irq(&ndlp->lock);
2672 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
2673 ndlp->nlp_fc4_type &= ~(NLP_FC4_FCP | NLP_FC4_NVME);
2674 spin_unlock_irq(&ndlp->lock);
2675 return ndlp->nlp_state;
2676 }
2677
2678 static uint32_t
lpfc_rcv_plogi_npr_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2679 lpfc_rcv_plogi_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 /* Ignore PLOGI if we have an outstanding LOGO */
2685 if (ndlp->nlp_flag & (NLP_LOGO_SND | NLP_LOGO_ACC))
2686 return ndlp->nlp_state;
2687 if (lpfc_rcv_plogi(vport, ndlp, cmdiocb)) {
2688 lpfc_cancel_retry_delay_tmo(vport, ndlp);
2689 spin_lock_irq(&ndlp->lock);
2690 ndlp->nlp_flag &= ~(NLP_NPR_ADISC | NLP_NPR_2B_DISC);
2691 spin_unlock_irq(&ndlp->lock);
2692 } else if (!(ndlp->nlp_flag & NLP_NPR_2B_DISC)) {
2693 /* send PLOGI immediately, move to PLOGI issue state */
2694 if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) {
2695 ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
2696 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
2697 lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
2698 }
2699 }
2700 return ndlp->nlp_state;
2701 }
2702
2703 static uint32_t
lpfc_rcv_prli_npr_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2704 lpfc_rcv_prli_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2705 void *arg, uint32_t evt)
2706 {
2707 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2708 struct ls_rjt stat;
2709
2710 memset(&stat, 0, sizeof (struct ls_rjt));
2711 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
2712 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
2713 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
2714
2715 if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) {
2716 /*
2717 * ADISC nodes will be handled in regular discovery path after
2718 * receiving response from NS.
2719 *
2720 * For other nodes, Send PLOGI to trigger an implicit LOGO.
2721 */
2722 if (!(ndlp->nlp_flag & NLP_NPR_ADISC)) {
2723 ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
2724 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
2725 lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
2726 }
2727 }
2728 return ndlp->nlp_state;
2729 }
2730
2731 static uint32_t
lpfc_rcv_logo_npr_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2732 lpfc_rcv_logo_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2733 void *arg, uint32_t evt)
2734 {
2735 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2736
2737 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
2738 return ndlp->nlp_state;
2739 }
2740
2741 static uint32_t
lpfc_rcv_padisc_npr_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2742 lpfc_rcv_padisc_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2743 void *arg, uint32_t evt)
2744 {
2745 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2746
2747 lpfc_rcv_padisc(vport, ndlp, cmdiocb);
2748 /*
2749 * Do not start discovery if discovery is about to start
2750 * or discovery in progress for this node. Starting discovery
2751 * here will affect the counting of discovery threads.
2752 */
2753 if (!(ndlp->nlp_flag & NLP_DELAY_TMO) &&
2754 !(ndlp->nlp_flag & NLP_NPR_2B_DISC)) {
2755 /*
2756 * ADISC nodes will be handled in regular discovery path after
2757 * receiving response from NS.
2758 *
2759 * For other nodes, Send PLOGI to trigger an implicit LOGO.
2760 */
2761 if (!(ndlp->nlp_flag & NLP_NPR_ADISC)) {
2762 ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
2763 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
2764 lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
2765 }
2766 }
2767 return ndlp->nlp_state;
2768 }
2769
2770 static uint32_t
lpfc_rcv_prlo_npr_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2771 lpfc_rcv_prlo_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2772 void *arg, uint32_t evt)
2773 {
2774 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2775
2776 spin_lock_irq(&ndlp->lock);
2777 ndlp->nlp_flag |= NLP_LOGO_ACC;
2778 spin_unlock_irq(&ndlp->lock);
2779
2780 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
2781
2782 if ((ndlp->nlp_flag & NLP_DELAY_TMO) == 0) {
2783 mod_timer(&ndlp->nlp_delayfunc,
2784 jiffies + msecs_to_jiffies(1000 * 1));
2785 spin_lock_irq(&ndlp->lock);
2786 ndlp->nlp_flag |= NLP_DELAY_TMO;
2787 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
2788 spin_unlock_irq(&ndlp->lock);
2789 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
2790 } else {
2791 spin_lock_irq(&ndlp->lock);
2792 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
2793 spin_unlock_irq(&ndlp->lock);
2794 }
2795 return ndlp->nlp_state;
2796 }
2797
2798 static uint32_t
lpfc_cmpl_plogi_npr_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2799 lpfc_cmpl_plogi_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2800 void *arg, uint32_t evt)
2801 {
2802 struct lpfc_hba *phba = vport->phba;
2803 struct lpfc_iocbq *cmdiocb, *rspiocb;
2804 u32 ulp_status;
2805
2806 cmdiocb = (struct lpfc_iocbq *) arg;
2807 rspiocb = cmdiocb->rsp_iocb;
2808
2809 ulp_status = get_job_ulpstatus(phba, rspiocb);
2810
2811 if (ulp_status)
2812 return NLP_STE_FREED_NODE;
2813
2814 return ndlp->nlp_state;
2815 }
2816
2817 static uint32_t
lpfc_cmpl_prli_npr_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2818 lpfc_cmpl_prli_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2819 void *arg, uint32_t evt)
2820 {
2821 struct lpfc_hba *phba = vport->phba;
2822 struct lpfc_iocbq *cmdiocb, *rspiocb;
2823 u32 ulp_status;
2824
2825 cmdiocb = (struct lpfc_iocbq *) arg;
2826 rspiocb = cmdiocb->rsp_iocb;
2827
2828 ulp_status = get_job_ulpstatus(phba, rspiocb);
2829
2830 if (ulp_status && (ndlp->nlp_flag & NLP_NODEV_REMOVE)) {
2831 lpfc_drop_node(vport, ndlp);
2832 return NLP_STE_FREED_NODE;
2833 }
2834 return ndlp->nlp_state;
2835 }
2836
2837 static uint32_t
lpfc_cmpl_logo_npr_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2838 lpfc_cmpl_logo_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2839 void *arg, uint32_t evt)
2840 {
2841 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2842
2843 /* For the fabric port just clear the fc flags. */
2844 if (ndlp->nlp_DID == Fabric_DID) {
2845 spin_lock_irq(shost->host_lock);
2846 vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP);
2847 spin_unlock_irq(shost->host_lock);
2848 }
2849 lpfc_unreg_rpi(vport, ndlp);
2850 return ndlp->nlp_state;
2851 }
2852
2853 static uint32_t
lpfc_cmpl_adisc_npr_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2854 lpfc_cmpl_adisc_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2855 void *arg, uint32_t evt)
2856 {
2857 struct lpfc_hba *phba = vport->phba;
2858 struct lpfc_iocbq *cmdiocb, *rspiocb;
2859 u32 ulp_status;
2860
2861 cmdiocb = (struct lpfc_iocbq *) arg;
2862 rspiocb = cmdiocb->rsp_iocb;
2863
2864 ulp_status = get_job_ulpstatus(phba, rspiocb);
2865
2866 if (ulp_status && (ndlp->nlp_flag & NLP_NODEV_REMOVE)) {
2867 lpfc_drop_node(vport, ndlp);
2868 return NLP_STE_FREED_NODE;
2869 }
2870 return ndlp->nlp_state;
2871 }
2872
2873 static uint32_t
lpfc_cmpl_reglogin_npr_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2874 lpfc_cmpl_reglogin_npr_node(struct lpfc_vport *vport,
2875 struct lpfc_nodelist *ndlp,
2876 void *arg, uint32_t evt)
2877 {
2878 LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg;
2879 MAILBOX_t *mb = &pmb->u.mb;
2880
2881 if (!mb->mbxStatus) {
2882 /* SLI4 ports have preallocated logical rpis. */
2883 if (vport->phba->sli_rev < LPFC_SLI_REV4)
2884 ndlp->nlp_rpi = mb->un.varWords[0];
2885 ndlp->nlp_flag |= NLP_RPI_REGISTERED;
2886 if (ndlp->nlp_flag & NLP_LOGO_ACC) {
2887 lpfc_unreg_rpi(vport, ndlp);
2888 }
2889 } else {
2890 if (ndlp->nlp_flag & NLP_NODEV_REMOVE) {
2891 lpfc_drop_node(vport, ndlp);
2892 return NLP_STE_FREED_NODE;
2893 }
2894 }
2895 return ndlp->nlp_state;
2896 }
2897
2898 static uint32_t
lpfc_device_rm_npr_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2899 lpfc_device_rm_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2900 void *arg, uint32_t evt)
2901 {
2902 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
2903 spin_lock_irq(&ndlp->lock);
2904 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
2905 spin_unlock_irq(&ndlp->lock);
2906 return ndlp->nlp_state;
2907 }
2908 lpfc_drop_node(vport, ndlp);
2909 return NLP_STE_FREED_NODE;
2910 }
2911
2912 static uint32_t
lpfc_device_recov_npr_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2913 lpfc_device_recov_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2914 void *arg, uint32_t evt)
2915 {
2916 /* Don't do anything that will mess up processing of the
2917 * previous RSCN.
2918 */
2919 if (vport->fc_flag & FC_RSCN_DEFERRED)
2920 return ndlp->nlp_state;
2921
2922 lpfc_cancel_retry_delay_tmo(vport, ndlp);
2923 spin_lock_irq(&ndlp->lock);
2924 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
2925 ndlp->nlp_fc4_type &= ~(NLP_FC4_FCP | NLP_FC4_NVME);
2926 spin_unlock_irq(&ndlp->lock);
2927 return ndlp->nlp_state;
2928 }
2929
2930
2931 /* This next section defines the NPort Discovery State Machine */
2932
2933 /* There are 4 different double linked lists nodelist entries can reside on.
2934 * The plogi list and adisc list are used when Link Up discovery or RSCN
2935 * processing is needed. Each list holds the nodes that we will send PLOGI
2936 * or ADISC on. These lists will keep track of what nodes will be effected
2937 * by an RSCN, or a Link Up (Typically, all nodes are effected on Link Up).
2938 * The unmapped_list will contain all nodes that we have successfully logged
2939 * into at the Fibre Channel level. The mapped_list will contain all nodes
2940 * that are mapped FCP targets.
2941 */
2942 /*
2943 * The bind list is a list of undiscovered (potentially non-existent) nodes
2944 * that we have saved binding information on. This information is used when
2945 * nodes transition from the unmapped to the mapped list.
2946 */
2947 /* For UNUSED_NODE state, the node has just been allocated .
2948 * For PLOGI_ISSUE and REG_LOGIN_ISSUE, the node is on
2949 * the PLOGI list. For REG_LOGIN_COMPL, the node is taken off the PLOGI list
2950 * and put on the unmapped list. For ADISC processing, the node is taken off
2951 * the ADISC list and placed on either the mapped or unmapped list (depending
2952 * on its previous state). Once on the unmapped list, a PRLI is issued and the
2953 * state changed to PRLI_ISSUE. When the PRLI completion occurs, the state is
2954 * changed to UNMAPPED_NODE. If the completion indicates a mapped
2955 * node, the node is taken off the unmapped list. The binding list is checked
2956 * for a valid binding, or a binding is automatically assigned. If binding
2957 * assignment is unsuccessful, the node is left on the unmapped list. If
2958 * binding assignment is successful, the associated binding list entry (if
2959 * any) is removed, and the node is placed on the mapped list.
2960 */
2961 /*
2962 * For a Link Down, all nodes on the ADISC, PLOGI, unmapped or mapped
2963 * lists will receive a DEVICE_RECOVERY event. If the linkdown or devloss timers
2964 * expire, all effected nodes will receive a DEVICE_RM event.
2965 */
2966 /*
2967 * For a Link Up or RSCN, all nodes will move from the mapped / unmapped lists
2968 * to either the ADISC or PLOGI list. After a Nameserver query or ALPA loopmap
2969 * check, additional nodes may be added or removed (via DEVICE_RM) to / from
2970 * the PLOGI or ADISC lists. Once the PLOGI and ADISC lists are populated,
2971 * we will first process the ADISC list. 32 entries are processed initially and
2972 * ADISC is initited for each one. Completions / Events for each node are
2973 * funnelled thru the state machine. As each node finishes ADISC processing, it
2974 * starts ADISC for any nodes waiting for ADISC processing. If no nodes are
2975 * waiting, and the ADISC list count is identically 0, then we are done. For
2976 * Link Up discovery, since all nodes on the PLOGI list are UNREG_LOGIN'ed, we
2977 * can issue a CLEAR_LA and reenable Link Events. Next we will process the PLOGI
2978 * list. 32 entries are processed initially and PLOGI is initited for each one.
2979 * Completions / Events for each node are funnelled thru the state machine. As
2980 * each node finishes PLOGI processing, it starts PLOGI for any nodes waiting
2981 * for PLOGI processing. If no nodes are waiting, and the PLOGI list count is
2982 * indentically 0, then we are done. We have now completed discovery / RSCN
2983 * handling. Upon completion, ALL nodes should be on either the mapped or
2984 * unmapped lists.
2985 */
2986
2987 static uint32_t (*lpfc_disc_action[NLP_STE_MAX_STATE * NLP_EVT_MAX_EVENT])
2988 (struct lpfc_vport *, struct lpfc_nodelist *, void *, uint32_t) = {
2989 /* Action routine Event Current State */
2990 lpfc_rcv_plogi_unused_node, /* RCV_PLOGI UNUSED_NODE */
2991 lpfc_rcv_els_unused_node, /* RCV_PRLI */
2992 lpfc_rcv_logo_unused_node, /* RCV_LOGO */
2993 lpfc_rcv_els_unused_node, /* RCV_ADISC */
2994 lpfc_rcv_els_unused_node, /* RCV_PDISC */
2995 lpfc_rcv_els_unused_node, /* RCV_PRLO */
2996 lpfc_disc_illegal, /* CMPL_PLOGI */
2997 lpfc_disc_illegal, /* CMPL_PRLI */
2998 lpfc_cmpl_logo_unused_node, /* CMPL_LOGO */
2999 lpfc_disc_illegal, /* CMPL_ADISC */
3000 lpfc_disc_illegal, /* CMPL_REG_LOGIN */
3001 lpfc_device_rm_unused_node, /* DEVICE_RM */
3002 lpfc_device_recov_unused_node, /* DEVICE_RECOVERY */
3003
3004 lpfc_rcv_plogi_plogi_issue, /* RCV_PLOGI PLOGI_ISSUE */
3005 lpfc_rcv_prli_plogi_issue, /* RCV_PRLI */
3006 lpfc_rcv_logo_plogi_issue, /* RCV_LOGO */
3007 lpfc_rcv_els_plogi_issue, /* RCV_ADISC */
3008 lpfc_rcv_els_plogi_issue, /* RCV_PDISC */
3009 lpfc_rcv_els_plogi_issue, /* RCV_PRLO */
3010 lpfc_cmpl_plogi_plogi_issue, /* CMPL_PLOGI */
3011 lpfc_disc_illegal, /* CMPL_PRLI */
3012 lpfc_cmpl_logo_plogi_issue, /* CMPL_LOGO */
3013 lpfc_disc_illegal, /* CMPL_ADISC */
3014 lpfc_cmpl_reglogin_plogi_issue,/* CMPL_REG_LOGIN */
3015 lpfc_device_rm_plogi_issue, /* DEVICE_RM */
3016 lpfc_device_recov_plogi_issue, /* DEVICE_RECOVERY */
3017
3018 lpfc_rcv_plogi_adisc_issue, /* RCV_PLOGI ADISC_ISSUE */
3019 lpfc_rcv_prli_adisc_issue, /* RCV_PRLI */
3020 lpfc_rcv_logo_adisc_issue, /* RCV_LOGO */
3021 lpfc_rcv_padisc_adisc_issue, /* RCV_ADISC */
3022 lpfc_rcv_padisc_adisc_issue, /* RCV_PDISC */
3023 lpfc_rcv_prlo_adisc_issue, /* RCV_PRLO */
3024 lpfc_disc_illegal, /* CMPL_PLOGI */
3025 lpfc_disc_illegal, /* CMPL_PRLI */
3026 lpfc_disc_illegal, /* CMPL_LOGO */
3027 lpfc_cmpl_adisc_adisc_issue, /* CMPL_ADISC */
3028 lpfc_disc_illegal, /* CMPL_REG_LOGIN */
3029 lpfc_device_rm_adisc_issue, /* DEVICE_RM */
3030 lpfc_device_recov_adisc_issue, /* DEVICE_RECOVERY */
3031
3032 lpfc_rcv_plogi_reglogin_issue, /* RCV_PLOGI REG_LOGIN_ISSUE */
3033 lpfc_rcv_prli_reglogin_issue, /* RCV_PLOGI */
3034 lpfc_rcv_logo_reglogin_issue, /* RCV_LOGO */
3035 lpfc_rcv_padisc_reglogin_issue, /* RCV_ADISC */
3036 lpfc_rcv_padisc_reglogin_issue, /* RCV_PDISC */
3037 lpfc_rcv_prlo_reglogin_issue, /* RCV_PRLO */
3038 lpfc_cmpl_plogi_illegal, /* CMPL_PLOGI */
3039 lpfc_disc_illegal, /* CMPL_PRLI */
3040 lpfc_disc_illegal, /* CMPL_LOGO */
3041 lpfc_disc_illegal, /* CMPL_ADISC */
3042 lpfc_cmpl_reglogin_reglogin_issue,/* CMPL_REG_LOGIN */
3043 lpfc_device_rm_reglogin_issue, /* DEVICE_RM */
3044 lpfc_device_recov_reglogin_issue,/* DEVICE_RECOVERY */
3045
3046 lpfc_rcv_plogi_prli_issue, /* RCV_PLOGI PRLI_ISSUE */
3047 lpfc_rcv_prli_prli_issue, /* RCV_PRLI */
3048 lpfc_rcv_logo_prli_issue, /* RCV_LOGO */
3049 lpfc_rcv_padisc_prli_issue, /* RCV_ADISC */
3050 lpfc_rcv_padisc_prli_issue, /* RCV_PDISC */
3051 lpfc_rcv_prlo_prli_issue, /* RCV_PRLO */
3052 lpfc_cmpl_plogi_illegal, /* CMPL_PLOGI */
3053 lpfc_cmpl_prli_prli_issue, /* CMPL_PRLI */
3054 lpfc_disc_illegal, /* CMPL_LOGO */
3055 lpfc_disc_illegal, /* CMPL_ADISC */
3056 lpfc_disc_illegal, /* CMPL_REG_LOGIN */
3057 lpfc_device_rm_prli_issue, /* DEVICE_RM */
3058 lpfc_device_recov_prli_issue, /* DEVICE_RECOVERY */
3059
3060 lpfc_rcv_plogi_logo_issue, /* RCV_PLOGI LOGO_ISSUE */
3061 lpfc_rcv_prli_logo_issue, /* RCV_PRLI */
3062 lpfc_rcv_logo_logo_issue, /* RCV_LOGO */
3063 lpfc_rcv_padisc_logo_issue, /* RCV_ADISC */
3064 lpfc_rcv_padisc_logo_issue, /* RCV_PDISC */
3065 lpfc_rcv_prlo_logo_issue, /* RCV_PRLO */
3066 lpfc_cmpl_plogi_illegal, /* CMPL_PLOGI */
3067 lpfc_disc_illegal, /* CMPL_PRLI */
3068 lpfc_cmpl_logo_logo_issue, /* CMPL_LOGO */
3069 lpfc_disc_illegal, /* CMPL_ADISC */
3070 lpfc_disc_illegal, /* CMPL_REG_LOGIN */
3071 lpfc_device_rm_logo_issue, /* DEVICE_RM */
3072 lpfc_device_recov_logo_issue, /* DEVICE_RECOVERY */
3073
3074 lpfc_rcv_plogi_unmap_node, /* RCV_PLOGI UNMAPPED_NODE */
3075 lpfc_rcv_prli_unmap_node, /* RCV_PRLI */
3076 lpfc_rcv_logo_unmap_node, /* RCV_LOGO */
3077 lpfc_rcv_padisc_unmap_node, /* RCV_ADISC */
3078 lpfc_rcv_padisc_unmap_node, /* RCV_PDISC */
3079 lpfc_rcv_prlo_unmap_node, /* RCV_PRLO */
3080 lpfc_disc_illegal, /* CMPL_PLOGI */
3081 lpfc_disc_illegal, /* CMPL_PRLI */
3082 lpfc_disc_illegal, /* CMPL_LOGO */
3083 lpfc_disc_illegal, /* CMPL_ADISC */
3084 lpfc_disc_illegal, /* CMPL_REG_LOGIN */
3085 lpfc_device_rm_unmap_node, /* DEVICE_RM */
3086 lpfc_device_recov_unmap_node, /* DEVICE_RECOVERY */
3087
3088 lpfc_rcv_plogi_mapped_node, /* RCV_PLOGI MAPPED_NODE */
3089 lpfc_rcv_prli_mapped_node, /* RCV_PRLI */
3090 lpfc_rcv_logo_mapped_node, /* RCV_LOGO */
3091 lpfc_rcv_padisc_mapped_node, /* RCV_ADISC */
3092 lpfc_rcv_padisc_mapped_node, /* RCV_PDISC */
3093 lpfc_rcv_prlo_mapped_node, /* RCV_PRLO */
3094 lpfc_disc_illegal, /* CMPL_PLOGI */
3095 lpfc_disc_illegal, /* CMPL_PRLI */
3096 lpfc_disc_illegal, /* CMPL_LOGO */
3097 lpfc_disc_illegal, /* CMPL_ADISC */
3098 lpfc_disc_illegal, /* CMPL_REG_LOGIN */
3099 lpfc_disc_illegal, /* DEVICE_RM */
3100 lpfc_device_recov_mapped_node, /* DEVICE_RECOVERY */
3101
3102 lpfc_rcv_plogi_npr_node, /* RCV_PLOGI NPR_NODE */
3103 lpfc_rcv_prli_npr_node, /* RCV_PRLI */
3104 lpfc_rcv_logo_npr_node, /* RCV_LOGO */
3105 lpfc_rcv_padisc_npr_node, /* RCV_ADISC */
3106 lpfc_rcv_padisc_npr_node, /* RCV_PDISC */
3107 lpfc_rcv_prlo_npr_node, /* RCV_PRLO */
3108 lpfc_cmpl_plogi_npr_node, /* CMPL_PLOGI */
3109 lpfc_cmpl_prli_npr_node, /* CMPL_PRLI */
3110 lpfc_cmpl_logo_npr_node, /* CMPL_LOGO */
3111 lpfc_cmpl_adisc_npr_node, /* CMPL_ADISC */
3112 lpfc_cmpl_reglogin_npr_node, /* CMPL_REG_LOGIN */
3113 lpfc_device_rm_npr_node, /* DEVICE_RM */
3114 lpfc_device_recov_npr_node, /* DEVICE_RECOVERY */
3115 };
3116
3117 int
lpfc_disc_state_machine(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)3118 lpfc_disc_state_machine(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
3119 void *arg, uint32_t evt)
3120 {
3121 uint32_t cur_state, rc;
3122 uint32_t(*func) (struct lpfc_vport *, struct lpfc_nodelist *, void *,
3123 uint32_t);
3124 uint32_t got_ndlp = 0;
3125 uint32_t data1;
3126
3127 if (lpfc_nlp_get(ndlp))
3128 got_ndlp = 1;
3129
3130 cur_state = ndlp->nlp_state;
3131
3132 data1 = (((uint32_t)ndlp->nlp_fc4_type << 16) |
3133 ((uint32_t)ndlp->nlp_type));
3134 /* DSM in event <evt> on NPort <nlp_DID> in state <cur_state> */
3135 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
3136 "0211 DSM in event x%x on NPort x%x in "
3137 "state %d rpi x%x Data: x%x x%x\n",
3138 evt, ndlp->nlp_DID, cur_state, ndlp->nlp_rpi,
3139 ndlp->nlp_flag, data1);
3140
3141 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_DSM,
3142 "DSM in: evt:%d ste:%d did:x%x",
3143 evt, cur_state, ndlp->nlp_DID);
3144
3145 func = lpfc_disc_action[(cur_state * NLP_EVT_MAX_EVENT) + evt];
3146 rc = (func) (vport, ndlp, arg, evt);
3147
3148 /* DSM out state <rc> on NPort <nlp_DID> */
3149 if (got_ndlp) {
3150 data1 = (((uint32_t)ndlp->nlp_fc4_type << 16) |
3151 ((uint32_t)ndlp->nlp_type));
3152 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
3153 "0212 DSM out state %d on NPort x%x "
3154 "rpi x%x Data: x%x x%x\n",
3155 rc, ndlp->nlp_DID, ndlp->nlp_rpi, ndlp->nlp_flag,
3156 data1);
3157
3158 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_DSM,
3159 "DSM out: ste:%d did:x%x flg:x%x",
3160 rc, ndlp->nlp_DID, ndlp->nlp_flag);
3161 /* Decrement the ndlp reference count held for this function */
3162 lpfc_nlp_put(ndlp);
3163 } else {
3164 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
3165 "0213 DSM out state %d on NPort free\n", rc);
3166
3167 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_DSM,
3168 "DSM out: ste:%d did:x%x flg:x%x",
3169 rc, 0, 0);
3170 }
3171
3172 return rc;
3173 }
3174