1 /*******************************************************************
2 * This file is part of the Emulex Linux Device Driver for *
3 * Fibre Channel Host Bus Adapters. *
4 * Copyright (C) 2017-2019 Broadcom. All Rights Reserved. The term *
5 * “Broadcom” refers to Broadcom Inc. and/or its subsidiaries. *
6 * Copyright (C) 2004-2016 Emulex. All rights reserved. *
7 * EMULEX and SLI are trademarks of Emulex. *
8 * www.broadcom.com *
9 * Portions Copyright (C) 2004-2005 Christoph Hellwig *
10 * *
11 * This program is free software; you can redistribute it and/or *
12 * modify it under the terms of version 2 of the GNU General *
13 * Public License as published by the Free Software Foundation. *
14 * This program is distributed in the hope that it will be useful. *
15 * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND *
16 * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, *
17 * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE *
18 * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD *
19 * TO BE LEGALLY INVALID. See the GNU General Public License for *
20 * more details, a copy of which can be found in the file COPYING *
21 * included with this package. *
22 *******************************************************************/
23
24 #include <linux/blkdev.h>
25 #include <linux/pci.h>
26 #include <linux/slab.h>
27 #include <linux/interrupt.h>
28
29 #include <scsi/scsi.h>
30 #include <scsi/scsi_device.h>
31 #include <scsi/scsi_host.h>
32 #include <scsi/scsi_transport_fc.h>
33 #include <scsi/fc/fc_fs.h>
34
35 #include "lpfc_hw4.h"
36 #include "lpfc_hw.h"
37 #include "lpfc_sli.h"
38 #include "lpfc_sli4.h"
39 #include "lpfc_nl.h"
40 #include "lpfc_disc.h"
41 #include "lpfc.h"
42 #include "lpfc_scsi.h"
43 #include "lpfc_nvme.h"
44 #include "lpfc_logmsg.h"
45 #include "lpfc_crtn.h"
46 #include "lpfc_vport.h"
47 #include "lpfc_debugfs.h"
48
49
50 /* Called to verify a rcv'ed ADISC was intended for us. */
51 static int
lpfc_check_adisc(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,struct lpfc_name * nn,struct lpfc_name * pn)52 lpfc_check_adisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
53 struct lpfc_name *nn, struct lpfc_name *pn)
54 {
55 /* First, we MUST have a RPI registered */
56 if (!(ndlp->nlp_flag & NLP_RPI_REGISTERED))
57 return 0;
58
59 /* Compare the ADISC rsp WWNN / WWPN matches our internal node
60 * table entry for that node.
61 */
62 if (memcmp(nn, &ndlp->nlp_nodename, sizeof (struct lpfc_name)))
63 return 0;
64
65 if (memcmp(pn, &ndlp->nlp_portname, sizeof (struct lpfc_name)))
66 return 0;
67
68 /* we match, return success */
69 return 1;
70 }
71
72 int
lpfc_check_sparm(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,struct serv_parm * sp,uint32_t class,int flogi)73 lpfc_check_sparm(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
74 struct serv_parm *sp, uint32_t class, int flogi)
75 {
76 volatile struct serv_parm *hsp = &vport->fc_sparam;
77 uint16_t hsp_value, ssp_value = 0;
78
79 /*
80 * The receive data field size and buffer-to-buffer receive data field
81 * size entries are 16 bits but are represented as two 8-bit fields in
82 * the driver data structure to account for rsvd bits and other control
83 * bits. Reconstruct and compare the fields as a 16-bit values before
84 * correcting the byte values.
85 */
86 if (sp->cls1.classValid) {
87 if (!flogi) {
88 hsp_value = ((hsp->cls1.rcvDataSizeMsb << 8) |
89 hsp->cls1.rcvDataSizeLsb);
90 ssp_value = ((sp->cls1.rcvDataSizeMsb << 8) |
91 sp->cls1.rcvDataSizeLsb);
92 if (!ssp_value)
93 goto bad_service_param;
94 if (ssp_value > hsp_value) {
95 sp->cls1.rcvDataSizeLsb =
96 hsp->cls1.rcvDataSizeLsb;
97 sp->cls1.rcvDataSizeMsb =
98 hsp->cls1.rcvDataSizeMsb;
99 }
100 }
101 } else if (class == CLASS1)
102 goto bad_service_param;
103 if (sp->cls2.classValid) {
104 if (!flogi) {
105 hsp_value = ((hsp->cls2.rcvDataSizeMsb << 8) |
106 hsp->cls2.rcvDataSizeLsb);
107 ssp_value = ((sp->cls2.rcvDataSizeMsb << 8) |
108 sp->cls2.rcvDataSizeLsb);
109 if (!ssp_value)
110 goto bad_service_param;
111 if (ssp_value > hsp_value) {
112 sp->cls2.rcvDataSizeLsb =
113 hsp->cls2.rcvDataSizeLsb;
114 sp->cls2.rcvDataSizeMsb =
115 hsp->cls2.rcvDataSizeMsb;
116 }
117 }
118 } else if (class == CLASS2)
119 goto bad_service_param;
120 if (sp->cls3.classValid) {
121 if (!flogi) {
122 hsp_value = ((hsp->cls3.rcvDataSizeMsb << 8) |
123 hsp->cls3.rcvDataSizeLsb);
124 ssp_value = ((sp->cls3.rcvDataSizeMsb << 8) |
125 sp->cls3.rcvDataSizeLsb);
126 if (!ssp_value)
127 goto bad_service_param;
128 if (ssp_value > hsp_value) {
129 sp->cls3.rcvDataSizeLsb =
130 hsp->cls3.rcvDataSizeLsb;
131 sp->cls3.rcvDataSizeMsb =
132 hsp->cls3.rcvDataSizeMsb;
133 }
134 }
135 } else if (class == CLASS3)
136 goto bad_service_param;
137
138 /*
139 * Preserve the upper four bits of the MSB from the PLOGI response.
140 * These bits contain the Buffer-to-Buffer State Change Number
141 * from the target and need to be passed to the FW.
142 */
143 hsp_value = (hsp->cmn.bbRcvSizeMsb << 8) | hsp->cmn.bbRcvSizeLsb;
144 ssp_value = (sp->cmn.bbRcvSizeMsb << 8) | sp->cmn.bbRcvSizeLsb;
145 if (ssp_value > hsp_value) {
146 sp->cmn.bbRcvSizeLsb = hsp->cmn.bbRcvSizeLsb;
147 sp->cmn.bbRcvSizeMsb = (sp->cmn.bbRcvSizeMsb & 0xF0) |
148 (hsp->cmn.bbRcvSizeMsb & 0x0F);
149 }
150
151 memcpy(&ndlp->nlp_nodename, &sp->nodeName, sizeof (struct lpfc_name));
152 memcpy(&ndlp->nlp_portname, &sp->portName, sizeof (struct lpfc_name));
153 return 1;
154 bad_service_param:
155 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
156 "0207 Device %x "
157 "(%02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x) sent "
158 "invalid service parameters. Ignoring device.\n",
159 ndlp->nlp_DID,
160 sp->nodeName.u.wwn[0], sp->nodeName.u.wwn[1],
161 sp->nodeName.u.wwn[2], sp->nodeName.u.wwn[3],
162 sp->nodeName.u.wwn[4], sp->nodeName.u.wwn[5],
163 sp->nodeName.u.wwn[6], sp->nodeName.u.wwn[7]);
164 return 0;
165 }
166
167 static void *
lpfc_check_elscmpl_iocb(struct lpfc_hba * phba,struct lpfc_iocbq * cmdiocb,struct lpfc_iocbq * rspiocb)168 lpfc_check_elscmpl_iocb(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
169 struct lpfc_iocbq *rspiocb)
170 {
171 struct lpfc_dmabuf *pcmd, *prsp;
172 uint32_t *lp;
173 void *ptr = NULL;
174 IOCB_t *irsp;
175
176 irsp = &rspiocb->iocb;
177 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
178
179 /* For lpfc_els_abort, context2 could be zero'ed to delay
180 * freeing associated memory till after ABTS completes.
181 */
182 if (pcmd) {
183 prsp = list_get_first(&pcmd->list, struct lpfc_dmabuf,
184 list);
185 if (prsp) {
186 lp = (uint32_t *) prsp->virt;
187 ptr = (void *)((uint8_t *)lp + sizeof(uint32_t));
188 }
189 } else {
190 /* Force ulpStatus error since we are returning NULL ptr */
191 if (!(irsp->ulpStatus)) {
192 irsp->ulpStatus = IOSTAT_LOCAL_REJECT;
193 irsp->un.ulpWord[4] = IOERR_SLI_ABORTED;
194 }
195 ptr = NULL;
196 }
197 return ptr;
198 }
199
200
201
202 /*
203 * Free resources / clean up outstanding I/Os
204 * associated with a LPFC_NODELIST entry. This
205 * routine effectively results in a "software abort".
206 */
207 void
lpfc_els_abort(struct lpfc_hba * phba,struct lpfc_nodelist * ndlp)208 lpfc_els_abort(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
209 {
210 LIST_HEAD(abort_list);
211 struct lpfc_sli_ring *pring;
212 struct lpfc_iocbq *iocb, *next_iocb;
213
214 pring = lpfc_phba_elsring(phba);
215
216 /* In case of error recovery path, we might have a NULL pring here */
217 if (unlikely(!pring))
218 return;
219
220 /* Abort outstanding I/O on NPort <nlp_DID> */
221 lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_DISCOVERY,
222 "2819 Abort outstanding I/O on NPort x%x "
223 "Data: x%x x%x x%x\n",
224 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
225 ndlp->nlp_rpi);
226 /* Clean up all fabric IOs first.*/
227 lpfc_fabric_abort_nport(ndlp);
228
229 /*
230 * Lock the ELS ring txcmplq for SLI3/SLI4 and build a local list
231 * of all ELS IOs that need an ABTS. The IOs need to stay on the
232 * txcmplq so that the abort operation completes them successfully.
233 */
234 spin_lock_irq(&phba->hbalock);
235 if (phba->sli_rev == LPFC_SLI_REV4)
236 spin_lock(&pring->ring_lock);
237 list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq, list) {
238 /* Add to abort_list on on NDLP match. */
239 if (lpfc_check_sli_ndlp(phba, pring, iocb, ndlp))
240 list_add_tail(&iocb->dlist, &abort_list);
241 }
242 if (phba->sli_rev == LPFC_SLI_REV4)
243 spin_unlock(&pring->ring_lock);
244 spin_unlock_irq(&phba->hbalock);
245
246 /* Abort the targeted IOs and remove them from the abort list. */
247 list_for_each_entry_safe(iocb, next_iocb, &abort_list, dlist) {
248 spin_lock_irq(&phba->hbalock);
249 list_del_init(&iocb->dlist);
250 lpfc_sli_issue_abort_iotag(phba, pring, iocb);
251 spin_unlock_irq(&phba->hbalock);
252 }
253
254 INIT_LIST_HEAD(&abort_list);
255
256 /* Now process the txq */
257 spin_lock_irq(&phba->hbalock);
258 if (phba->sli_rev == LPFC_SLI_REV4)
259 spin_lock(&pring->ring_lock);
260
261 list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) {
262 /* Check to see if iocb matches the nport we are looking for */
263 if (lpfc_check_sli_ndlp(phba, pring, iocb, ndlp)) {
264 list_del_init(&iocb->list);
265 list_add_tail(&iocb->list, &abort_list);
266 }
267 }
268
269 if (phba->sli_rev == LPFC_SLI_REV4)
270 spin_unlock(&pring->ring_lock);
271 spin_unlock_irq(&phba->hbalock);
272
273 /* Cancel all the IOCBs from the completions list */
274 lpfc_sli_cancel_iocbs(phba, &abort_list,
275 IOSTAT_LOCAL_REJECT, IOERR_SLI_ABORTED);
276
277 lpfc_cancel_retry_delay_tmo(phba->pport, ndlp);
278 }
279
280 /* lpfc_defer_pt2pt_acc - Complete SLI3 pt2pt processing on link up
281 * @phba: pointer to lpfc hba data structure.
282 * @link_mbox: pointer to CONFIG_LINK mailbox object
283 *
284 * This routine is only called if we are SLI3, direct connect pt2pt
285 * mode and the remote NPort issues the PLOGI after link up.
286 */
287 static void
lpfc_defer_pt2pt_acc(struct lpfc_hba * phba,LPFC_MBOXQ_t * link_mbox)288 lpfc_defer_pt2pt_acc(struct lpfc_hba *phba, LPFC_MBOXQ_t *link_mbox)
289 {
290 LPFC_MBOXQ_t *login_mbox;
291 MAILBOX_t *mb = &link_mbox->u.mb;
292 struct lpfc_iocbq *save_iocb;
293 struct lpfc_nodelist *ndlp;
294 int rc;
295
296 ndlp = link_mbox->ctx_ndlp;
297 login_mbox = link_mbox->context3;
298 save_iocb = login_mbox->context3;
299 link_mbox->context3 = NULL;
300 login_mbox->context3 = NULL;
301
302 /* Check for CONFIG_LINK error */
303 if (mb->mbxStatus) {
304 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
305 "4575 CONFIG_LINK fails pt2pt discovery: %x\n",
306 mb->mbxStatus);
307 mempool_free(login_mbox, phba->mbox_mem_pool);
308 mempool_free(link_mbox, phba->mbox_mem_pool);
309 kfree(save_iocb);
310 return;
311 }
312
313 /* Now that CONFIG_LINK completed, and our SID is configured,
314 * we can now proceed with sending the PLOGI ACC.
315 */
316 rc = lpfc_els_rsp_acc(link_mbox->vport, ELS_CMD_PLOGI,
317 save_iocb, ndlp, login_mbox);
318 if (rc) {
319 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
320 "4576 PLOGI ACC fails pt2pt discovery: %x\n",
321 rc);
322 mempool_free(login_mbox, phba->mbox_mem_pool);
323 }
324
325 mempool_free(link_mbox, phba->mbox_mem_pool);
326 kfree(save_iocb);
327 }
328
329 /**
330 * lpfc_defer_tgt_acc - Progress SLI4 target rcv PLOGI handler
331 * @phba: Pointer to HBA context object.
332 * @pmb: Pointer to mailbox object.
333 *
334 * This function provides the unreg rpi mailbox completion handler for a tgt.
335 * The routine frees the memory resources associated with the completed
336 * mailbox command and transmits the ELS ACC.
337 *
338 * This routine is only called if we are SLI4, acting in target
339 * mode and the remote NPort issues the PLOGI after link up.
340 **/
341 static void
lpfc_defer_acc_rsp(struct lpfc_hba * phba,LPFC_MBOXQ_t * pmb)342 lpfc_defer_acc_rsp(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
343 {
344 struct lpfc_vport *vport = pmb->vport;
345 struct lpfc_nodelist *ndlp = pmb->ctx_ndlp;
346 LPFC_MBOXQ_t *mbox = pmb->context3;
347 struct lpfc_iocbq *piocb = NULL;
348 int rc;
349
350 if (mbox) {
351 pmb->context3 = NULL;
352 piocb = mbox->context3;
353 mbox->context3 = NULL;
354 }
355
356 /*
357 * Complete the unreg rpi mbx request, and update flags.
358 * This will also restart any deferred events.
359 */
360 lpfc_nlp_get(ndlp);
361 lpfc_sli4_unreg_rpi_cmpl_clr(phba, pmb);
362
363 if (!piocb) {
364 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
365 "4578 PLOGI ACC fail\n");
366 if (mbox)
367 mempool_free(mbox, phba->mbox_mem_pool);
368 goto out;
369 }
370
371 rc = lpfc_els_rsp_acc(vport, ELS_CMD_PLOGI, piocb, ndlp, mbox);
372 if (rc) {
373 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
374 "4579 PLOGI ACC fail %x\n", rc);
375 if (mbox)
376 mempool_free(mbox, phba->mbox_mem_pool);
377 }
378 kfree(piocb);
379 out:
380 lpfc_nlp_put(ndlp);
381 }
382
383 static int
lpfc_rcv_plogi(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,struct lpfc_iocbq * cmdiocb)384 lpfc_rcv_plogi(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
385 struct lpfc_iocbq *cmdiocb)
386 {
387 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
388 struct lpfc_hba *phba = vport->phba;
389 struct lpfc_dmabuf *pcmd;
390 uint64_t nlp_portwwn = 0;
391 uint32_t *lp;
392 IOCB_t *icmd;
393 struct serv_parm *sp;
394 uint32_t ed_tov;
395 LPFC_MBOXQ_t *link_mbox;
396 LPFC_MBOXQ_t *login_mbox;
397 struct lpfc_iocbq *save_iocb;
398 struct ls_rjt stat;
399 uint32_t vid, flag;
400 u16 rpi;
401 int rc, defer_acc;
402
403 memset(&stat, 0, sizeof (struct ls_rjt));
404 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
405 lp = (uint32_t *) pcmd->virt;
406 sp = (struct serv_parm *) ((uint8_t *) lp + sizeof (uint32_t));
407 if (wwn_to_u64(sp->portName.u.wwn) == 0) {
408 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
409 "0140 PLOGI Reject: invalid nname\n");
410 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
411 stat.un.b.lsRjtRsnCodeExp = LSEXP_INVALID_PNAME;
412 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
413 NULL);
414 return 0;
415 }
416 if (wwn_to_u64(sp->nodeName.u.wwn) == 0) {
417 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
418 "0141 PLOGI Reject: invalid pname\n");
419 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
420 stat.un.b.lsRjtRsnCodeExp = LSEXP_INVALID_NNAME;
421 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
422 NULL);
423 return 0;
424 }
425
426 nlp_portwwn = wwn_to_u64(ndlp->nlp_portname.u.wwn);
427 if ((lpfc_check_sparm(vport, ndlp, sp, CLASS3, 0) == 0)) {
428 /* Reject this request because invalid parameters */
429 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
430 stat.un.b.lsRjtRsnCodeExp = LSEXP_SPARM_OPTIONS;
431 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
432 NULL);
433 return 0;
434 }
435 icmd = &cmdiocb->iocb;
436
437 /* PLOGI chkparm OK */
438 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
439 "0114 PLOGI chkparm OK Data: x%x x%x x%x "
440 "x%x x%x x%x\n",
441 ndlp->nlp_DID, ndlp->nlp_state, ndlp->nlp_flag,
442 ndlp->nlp_rpi, vport->port_state,
443 vport->fc_flag);
444
445 if (vport->cfg_fcp_class == 2 && sp->cls2.classValid)
446 ndlp->nlp_fcp_info |= CLASS2;
447 else
448 ndlp->nlp_fcp_info |= CLASS3;
449
450 defer_acc = 0;
451 ndlp->nlp_class_sup = 0;
452 if (sp->cls1.classValid)
453 ndlp->nlp_class_sup |= FC_COS_CLASS1;
454 if (sp->cls2.classValid)
455 ndlp->nlp_class_sup |= FC_COS_CLASS2;
456 if (sp->cls3.classValid)
457 ndlp->nlp_class_sup |= FC_COS_CLASS3;
458 if (sp->cls4.classValid)
459 ndlp->nlp_class_sup |= FC_COS_CLASS4;
460 ndlp->nlp_maxframe =
461 ((sp->cmn.bbRcvSizeMsb & 0x0F) << 8) | sp->cmn.bbRcvSizeLsb;
462 /* if already logged in, do implicit logout */
463 switch (ndlp->nlp_state) {
464 case NLP_STE_NPR_NODE:
465 if (!(ndlp->nlp_flag & NLP_NPR_ADISC))
466 break;
467 fallthrough;
468 case NLP_STE_REG_LOGIN_ISSUE:
469 case NLP_STE_PRLI_ISSUE:
470 case NLP_STE_UNMAPPED_NODE:
471 case NLP_STE_MAPPED_NODE:
472 /* For initiators, lpfc_plogi_confirm_nport skips fabric did.
473 * For target mode, execute implicit logo.
474 * Fabric nodes go into NPR.
475 */
476 if (!(ndlp->nlp_type & NLP_FABRIC) &&
477 !(phba->nvmet_support)) {
478 lpfc_els_rsp_acc(vport, ELS_CMD_PLOGI, cmdiocb,
479 ndlp, NULL);
480 return 1;
481 }
482 if (nlp_portwwn != 0 &&
483 nlp_portwwn != wwn_to_u64(sp->portName.u.wwn))
484 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
485 "0143 PLOGI recv'd from DID: x%x "
486 "WWPN changed: old %llx new %llx\n",
487 ndlp->nlp_DID,
488 (unsigned long long)nlp_portwwn,
489 (unsigned long long)
490 wwn_to_u64(sp->portName.u.wwn));
491
492 /* Notify transport of connectivity loss to trigger cleanup. */
493 if (phba->nvmet_support &&
494 ndlp->nlp_state == NLP_STE_UNMAPPED_NODE)
495 lpfc_nvmet_invalidate_host(phba, ndlp);
496
497 ndlp->nlp_prev_state = ndlp->nlp_state;
498 /* rport needs to be unregistered first */
499 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
500 break;
501 }
502
503 ndlp->nlp_type &= ~(NLP_FCP_TARGET | NLP_FCP_INITIATOR);
504 ndlp->nlp_type &= ~(NLP_NVME_TARGET | NLP_NVME_INITIATOR);
505 ndlp->nlp_fcp_info &= ~NLP_FCP_2_DEVICE;
506 ndlp->nlp_flag &= ~NLP_FIRSTBURST;
507
508 login_mbox = NULL;
509 link_mbox = NULL;
510 save_iocb = NULL;
511
512 /* Check for Nport to NPort pt2pt protocol */
513 if ((vport->fc_flag & FC_PT2PT) &&
514 !(vport->fc_flag & FC_PT2PT_PLOGI)) {
515 /* rcv'ed PLOGI decides what our NPortId will be */
516 vport->fc_myDID = icmd->un.rcvels.parmRo;
517
518 ed_tov = be32_to_cpu(sp->cmn.e_d_tov);
519 if (sp->cmn.edtovResolution) {
520 /* E_D_TOV ticks are in nanoseconds */
521 ed_tov = (phba->fc_edtov + 999999) / 1000000;
522 }
523
524 /*
525 * For pt-to-pt, use the larger EDTOV
526 * RATOV = 2 * EDTOV
527 */
528 if (ed_tov > phba->fc_edtov)
529 phba->fc_edtov = ed_tov;
530 phba->fc_ratov = (2 * phba->fc_edtov) / 1000;
531
532 memcpy(&phba->fc_fabparam, sp, sizeof(struct serv_parm));
533
534 /* Issue config_link / reg_vfi to account for updated TOV's */
535
536 if (phba->sli_rev == LPFC_SLI_REV4)
537 lpfc_issue_reg_vfi(vport);
538 else {
539 defer_acc = 1;
540 link_mbox = mempool_alloc(phba->mbox_mem_pool,
541 GFP_KERNEL);
542 if (!link_mbox)
543 goto out;
544 lpfc_config_link(phba, link_mbox);
545 link_mbox->mbox_cmpl = lpfc_defer_pt2pt_acc;
546 link_mbox->vport = vport;
547 link_mbox->ctx_ndlp = ndlp;
548
549 save_iocb = kzalloc(sizeof(*save_iocb), GFP_KERNEL);
550 if (!save_iocb)
551 goto out;
552 /* Save info from cmd IOCB used in rsp */
553 memcpy((uint8_t *)save_iocb, (uint8_t *)cmdiocb,
554 sizeof(struct lpfc_iocbq));
555 }
556
557 lpfc_can_disctmo(vport);
558 }
559
560 ndlp->nlp_flag &= ~NLP_SUPPRESS_RSP;
561 if ((phba->sli.sli_flag & LPFC_SLI_SUPPRESS_RSP) &&
562 sp->cmn.valid_vendor_ver_level) {
563 vid = be32_to_cpu(sp->un.vv.vid);
564 flag = be32_to_cpu(sp->un.vv.flags);
565 if ((vid == LPFC_VV_EMLX_ID) && (flag & LPFC_VV_SUPPRESS_RSP))
566 ndlp->nlp_flag |= NLP_SUPPRESS_RSP;
567 }
568
569 login_mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
570 if (!login_mbox)
571 goto out;
572
573 /* Registering an existing RPI behaves differently for SLI3 vs SLI4 */
574 if (phba->nvmet_support && !defer_acc) {
575 link_mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
576 if (!link_mbox)
577 goto out;
578
579 /* As unique identifiers such as iotag would be overwritten
580 * with those from the cmdiocb, allocate separate temporary
581 * storage for the copy.
582 */
583 save_iocb = kzalloc(sizeof(*save_iocb), GFP_KERNEL);
584 if (!save_iocb)
585 goto out;
586
587 /* Unreg RPI is required for SLI4. */
588 rpi = phba->sli4_hba.rpi_ids[ndlp->nlp_rpi];
589 lpfc_unreg_login(phba, vport->vpi, rpi, link_mbox);
590 link_mbox->vport = vport;
591 link_mbox->ctx_ndlp = ndlp;
592 link_mbox->mbox_cmpl = lpfc_defer_acc_rsp;
593
594 if (((ndlp->nlp_DID & Fabric_DID_MASK) != Fabric_DID_MASK) &&
595 (!(vport->fc_flag & FC_OFFLINE_MODE)))
596 ndlp->nlp_flag |= NLP_UNREG_INP;
597
598 /* Save info from cmd IOCB used in rsp */
599 memcpy(save_iocb, cmdiocb, sizeof(*save_iocb));
600
601 /* Delay sending ACC till unreg RPI completes. */
602 defer_acc = 1;
603 } else if (phba->sli_rev == LPFC_SLI_REV4)
604 lpfc_unreg_rpi(vport, ndlp);
605
606 rc = lpfc_reg_rpi(phba, vport->vpi, icmd->un.rcvels.remoteID,
607 (uint8_t *)sp, login_mbox, ndlp->nlp_rpi);
608 if (rc)
609 goto out;
610
611 /* ACC PLOGI rsp command needs to execute first,
612 * queue this login_mbox command to be processed later.
613 */
614 login_mbox->mbox_cmpl = lpfc_mbx_cmpl_reg_login;
615 /*
616 * login_mbox->ctx_ndlp = lpfc_nlp_get(ndlp) deferred until mailbox
617 * command issued in lpfc_cmpl_els_acc().
618 */
619 login_mbox->vport = vport;
620 spin_lock_irq(shost->host_lock);
621 ndlp->nlp_flag |= (NLP_ACC_REGLOGIN | NLP_RCV_PLOGI);
622 spin_unlock_irq(shost->host_lock);
623
624 /*
625 * If there is an outstanding PLOGI issued, abort it before
626 * sending ACC rsp for received PLOGI. If pending plogi
627 * is not canceled here, the plogi will be rejected by
628 * remote port and will be retried. On a configuration with
629 * single discovery thread, this will cause a huge delay in
630 * discovery. Also this will cause multiple state machines
631 * running in parallel for this node.
632 * This only applies to a fabric environment.
633 */
634 if ((ndlp->nlp_state == NLP_STE_PLOGI_ISSUE) &&
635 (vport->fc_flag & FC_FABRIC)) {
636 /* software abort outstanding PLOGI */
637 lpfc_els_abort(phba, ndlp);
638 }
639
640 if ((vport->port_type == LPFC_NPIV_PORT &&
641 vport->cfg_restrict_login)) {
642
643 /* no deferred ACC */
644 kfree(save_iocb);
645
646 /* In order to preserve RPIs, we want to cleanup
647 * the default RPI the firmware created to rcv
648 * this ELS request. The only way to do this is
649 * to register, then unregister the RPI.
650 */
651 spin_lock_irq(shost->host_lock);
652 ndlp->nlp_flag |= NLP_RM_DFLT_RPI;
653 spin_unlock_irq(shost->host_lock);
654 stat.un.b.lsRjtRsnCode = LSRJT_INVALID_CMD;
655 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
656 rc = lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb,
657 ndlp, login_mbox);
658 if (rc)
659 mempool_free(login_mbox, phba->mbox_mem_pool);
660 return 1;
661 }
662 if (defer_acc) {
663 /* So the order here should be:
664 * SLI3 pt2pt
665 * Issue CONFIG_LINK mbox
666 * CONFIG_LINK cmpl
667 * SLI4 tgt
668 * Issue UNREG RPI mbx
669 * UNREG RPI cmpl
670 * Issue PLOGI ACC
671 * PLOGI ACC cmpl
672 * Issue REG_LOGIN mbox
673 */
674
675 /* Save the REG_LOGIN mbox for and rcv IOCB copy later */
676 link_mbox->context3 = login_mbox;
677 login_mbox->context3 = save_iocb;
678
679 /* Start the ball rolling by issuing CONFIG_LINK here */
680 rc = lpfc_sli_issue_mbox(phba, link_mbox, MBX_NOWAIT);
681 if (rc == MBX_NOT_FINISHED)
682 goto out;
683 return 1;
684 }
685
686 rc = lpfc_els_rsp_acc(vport, ELS_CMD_PLOGI, cmdiocb, ndlp, login_mbox);
687 if (rc)
688 mempool_free(login_mbox, phba->mbox_mem_pool);
689 return 1;
690 out:
691 if (defer_acc)
692 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
693 "4577 discovery failure: %p %p %p\n",
694 save_iocb, link_mbox, login_mbox);
695 kfree(save_iocb);
696 if (link_mbox)
697 mempool_free(link_mbox, phba->mbox_mem_pool);
698 if (login_mbox)
699 mempool_free(login_mbox, phba->mbox_mem_pool);
700
701 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
702 stat.un.b.lsRjtRsnCodeExp = LSEXP_OUT_OF_RESOURCE;
703 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
704 return 0;
705 }
706
707 /**
708 * lpfc_mbx_cmpl_resume_rpi - Resume RPI completion routine
709 * @phba: pointer to lpfc hba data structure.
710 * @mboxq: pointer to mailbox object
711 *
712 * This routine is invoked to issue a completion to a rcv'ed
713 * ADISC or PDISC after the paused RPI has been resumed.
714 **/
715 static void
lpfc_mbx_cmpl_resume_rpi(struct lpfc_hba * phba,LPFC_MBOXQ_t * mboxq)716 lpfc_mbx_cmpl_resume_rpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
717 {
718 struct lpfc_vport *vport;
719 struct lpfc_iocbq *elsiocb;
720 struct lpfc_nodelist *ndlp;
721 uint32_t cmd;
722
723 elsiocb = (struct lpfc_iocbq *)mboxq->ctx_buf;
724 ndlp = (struct lpfc_nodelist *)mboxq->ctx_ndlp;
725 vport = mboxq->vport;
726 cmd = elsiocb->drvrTimeout;
727
728 if (cmd == ELS_CMD_ADISC) {
729 lpfc_els_rsp_adisc_acc(vport, elsiocb, ndlp);
730 } else {
731 lpfc_els_rsp_acc(vport, ELS_CMD_PLOGI, elsiocb,
732 ndlp, NULL);
733 }
734 kfree(elsiocb);
735 mempool_free(mboxq, phba->mbox_mem_pool);
736 }
737
738 static int
lpfc_rcv_padisc(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,struct lpfc_iocbq * cmdiocb)739 lpfc_rcv_padisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
740 struct lpfc_iocbq *cmdiocb)
741 {
742 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
743 struct lpfc_iocbq *elsiocb;
744 struct lpfc_dmabuf *pcmd;
745 struct serv_parm *sp;
746 struct lpfc_name *pnn, *ppn;
747 struct ls_rjt stat;
748 ADISC *ap;
749 IOCB_t *icmd;
750 uint32_t *lp;
751 uint32_t cmd;
752
753 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
754 lp = (uint32_t *) pcmd->virt;
755
756 cmd = *lp++;
757 if (cmd == ELS_CMD_ADISC) {
758 ap = (ADISC *) lp;
759 pnn = (struct lpfc_name *) & ap->nodeName;
760 ppn = (struct lpfc_name *) & ap->portName;
761 } else {
762 sp = (struct serv_parm *) lp;
763 pnn = (struct lpfc_name *) & sp->nodeName;
764 ppn = (struct lpfc_name *) & sp->portName;
765 }
766
767 icmd = &cmdiocb->iocb;
768 if (icmd->ulpStatus == 0 && lpfc_check_adisc(vport, ndlp, pnn, ppn)) {
769
770 /*
771 * As soon as we send ACC, the remote NPort can
772 * start sending us data. Thus, for SLI4 we must
773 * resume the RPI before the ACC goes out.
774 */
775 if (vport->phba->sli_rev == LPFC_SLI_REV4) {
776 elsiocb = kmalloc(sizeof(struct lpfc_iocbq),
777 GFP_KERNEL);
778 if (elsiocb) {
779
780 /* Save info from cmd IOCB used in rsp */
781 memcpy((uint8_t *)elsiocb, (uint8_t *)cmdiocb,
782 sizeof(struct lpfc_iocbq));
783
784 /* Save the ELS cmd */
785 elsiocb->drvrTimeout = cmd;
786
787 lpfc_sli4_resume_rpi(ndlp,
788 lpfc_mbx_cmpl_resume_rpi, elsiocb);
789 goto out;
790 }
791 }
792
793 if (cmd == ELS_CMD_ADISC) {
794 lpfc_els_rsp_adisc_acc(vport, cmdiocb, ndlp);
795 } else {
796 lpfc_els_rsp_acc(vport, ELS_CMD_PLOGI, cmdiocb,
797 ndlp, NULL);
798 }
799 out:
800 /* If we are authenticated, move to the proper state.
801 * It is possible an ADISC arrived and the remote nport
802 * is already in MAPPED or UNMAPPED state. Catch this
803 * condition and don't set the nlp_state again because
804 * it causes an unnecessary transport unregister/register.
805 */
806 if (ndlp->nlp_type & (NLP_FCP_TARGET | NLP_NVME_TARGET)) {
807 if (ndlp->nlp_state != NLP_STE_MAPPED_NODE)
808 lpfc_nlp_set_state(vport, ndlp,
809 NLP_STE_MAPPED_NODE);
810 }
811
812 return 1;
813 }
814 /* Reject this request because invalid parameters */
815 stat.un.b.lsRjtRsvd0 = 0;
816 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
817 stat.un.b.lsRjtRsnCodeExp = LSEXP_SPARM_OPTIONS;
818 stat.un.b.vendorUnique = 0;
819 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
820
821 /* 1 sec timeout */
822 mod_timer(&ndlp->nlp_delayfunc, jiffies + msecs_to_jiffies(1000));
823
824 spin_lock_irq(shost->host_lock);
825 ndlp->nlp_flag |= NLP_DELAY_TMO;
826 spin_unlock_irq(shost->host_lock);
827 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
828 ndlp->nlp_prev_state = ndlp->nlp_state;
829 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
830 return 0;
831 }
832
833 static int
lpfc_rcv_logo(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,struct lpfc_iocbq * cmdiocb,uint32_t els_cmd)834 lpfc_rcv_logo(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
835 struct lpfc_iocbq *cmdiocb, uint32_t els_cmd)
836 {
837 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
838 struct lpfc_hba *phba = vport->phba;
839 struct lpfc_vport **vports;
840 int i, active_vlink_present = 0 ;
841
842 /* Put ndlp in NPR state with 1 sec timeout for plogi, ACC logo */
843 /* Only call LOGO ACC for first LOGO, this avoids sending unnecessary
844 * PLOGIs during LOGO storms from a device.
845 */
846 spin_lock_irq(shost->host_lock);
847 ndlp->nlp_flag |= NLP_LOGO_ACC;
848 spin_unlock_irq(shost->host_lock);
849 if (els_cmd == ELS_CMD_PRLO)
850 lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
851 else
852 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
853
854 /* Notify transport of connectivity loss to trigger cleanup. */
855 if (phba->nvmet_support &&
856 ndlp->nlp_state == NLP_STE_UNMAPPED_NODE)
857 lpfc_nvmet_invalidate_host(phba, ndlp);
858
859 if (ndlp->nlp_DID == Fabric_DID) {
860 if (vport->port_state <= LPFC_FDISC)
861 goto out;
862 lpfc_linkdown_port(vport);
863 spin_lock_irq(shost->host_lock);
864 vport->fc_flag |= FC_VPORT_LOGO_RCVD;
865 spin_unlock_irq(shost->host_lock);
866 vports = lpfc_create_vport_work_array(phba);
867 if (vports) {
868 for (i = 0; i <= phba->max_vports && vports[i] != NULL;
869 i++) {
870 if ((!(vports[i]->fc_flag &
871 FC_VPORT_LOGO_RCVD)) &&
872 (vports[i]->port_state > LPFC_FDISC)) {
873 active_vlink_present = 1;
874 break;
875 }
876 }
877 lpfc_destroy_vport_work_array(phba, vports);
878 }
879
880 /*
881 * Don't re-instantiate if vport is marked for deletion.
882 * If we are here first then vport_delete is going to wait
883 * for discovery to complete.
884 */
885 if (!(vport->load_flag & FC_UNLOADING) &&
886 active_vlink_present) {
887 /*
888 * If there are other active VLinks present,
889 * re-instantiate the Vlink using FDISC.
890 */
891 mod_timer(&ndlp->nlp_delayfunc,
892 jiffies + msecs_to_jiffies(1000));
893 spin_lock_irq(shost->host_lock);
894 ndlp->nlp_flag |= NLP_DELAY_TMO;
895 spin_unlock_irq(shost->host_lock);
896 ndlp->nlp_last_elscmd = ELS_CMD_FDISC;
897 vport->port_state = LPFC_FDISC;
898 } else {
899 spin_lock_irq(shost->host_lock);
900 phba->pport->fc_flag &= ~FC_LOGO_RCVD_DID_CHNG;
901 spin_unlock_irq(shost->host_lock);
902 lpfc_retry_pport_discovery(phba);
903 }
904 } else if ((!(ndlp->nlp_type & NLP_FABRIC) &&
905 ((ndlp->nlp_type & NLP_FCP_TARGET) ||
906 (ndlp->nlp_type & NLP_NVME_TARGET) ||
907 (vport->fc_flag & FC_PT2PT))) ||
908 (ndlp->nlp_state == NLP_STE_ADISC_ISSUE)) {
909 /* Only try to re-login if this is NOT a Fabric Node
910 * AND the remote NPORT is a FCP/NVME Target or we
911 * are in pt2pt mode. NLP_STE_ADISC_ISSUE is a special
912 * case for LOGO as a response to ADISC behavior.
913 */
914 mod_timer(&ndlp->nlp_delayfunc,
915 jiffies + msecs_to_jiffies(1000 * 1));
916 spin_lock_irq(shost->host_lock);
917 ndlp->nlp_flag |= NLP_DELAY_TMO;
918 spin_unlock_irq(shost->host_lock);
919
920 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
921 }
922 out:
923 ndlp->nlp_prev_state = ndlp->nlp_state;
924 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
925
926 spin_lock_irq(shost->host_lock);
927 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
928 spin_unlock_irq(shost->host_lock);
929 /* The driver has to wait until the ACC completes before it continues
930 * processing the LOGO. The action will resume in
931 * lpfc_cmpl_els_logo_acc routine. Since part of processing includes an
932 * unreg_login, the driver waits so the ACC does not get aborted.
933 */
934 return 0;
935 }
936
937 static uint32_t
lpfc_rcv_prli_support_check(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,struct lpfc_iocbq * cmdiocb)938 lpfc_rcv_prli_support_check(struct lpfc_vport *vport,
939 struct lpfc_nodelist *ndlp,
940 struct lpfc_iocbq *cmdiocb)
941 {
942 struct ls_rjt stat;
943 uint32_t *payload;
944 uint32_t cmd;
945
946 payload = ((struct lpfc_dmabuf *)cmdiocb->context2)->virt;
947 cmd = *payload;
948 if (vport->phba->nvmet_support) {
949 /* Must be a NVME PRLI */
950 if (cmd == ELS_CMD_PRLI)
951 goto out;
952 } else {
953 /* Initiator mode. */
954 if (!vport->nvmei_support && (cmd == ELS_CMD_NVMEPRLI))
955 goto out;
956 }
957 return 1;
958 out:
959 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NVME_DISC,
960 "6115 Rcv PRLI (%x) check failed: ndlp rpi %d "
961 "state x%x flags x%x\n",
962 cmd, ndlp->nlp_rpi, ndlp->nlp_state,
963 ndlp->nlp_flag);
964 memset(&stat, 0, sizeof(struct ls_rjt));
965 stat.un.b.lsRjtRsnCode = LSRJT_CMD_UNSUPPORTED;
966 stat.un.b.lsRjtRsnCodeExp = LSEXP_REQ_UNSUPPORTED;
967 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb,
968 ndlp, NULL);
969 return 0;
970 }
971
972 static void
lpfc_rcv_prli(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,struct lpfc_iocbq * cmdiocb)973 lpfc_rcv_prli(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
974 struct lpfc_iocbq *cmdiocb)
975 {
976 struct lpfc_hba *phba = vport->phba;
977 struct lpfc_dmabuf *pcmd;
978 uint32_t *lp;
979 PRLI *npr;
980 struct fc_rport *rport = ndlp->rport;
981 u32 roles;
982
983 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
984 lp = (uint32_t *) pcmd->virt;
985 npr = (PRLI *) ((uint8_t *) lp + sizeof (uint32_t));
986
987 if ((npr->prliType == PRLI_FCP_TYPE) ||
988 (npr->prliType == PRLI_NVME_TYPE)) {
989 if (npr->initiatorFunc) {
990 if (npr->prliType == PRLI_FCP_TYPE)
991 ndlp->nlp_type |= NLP_FCP_INITIATOR;
992 if (npr->prliType == PRLI_NVME_TYPE)
993 ndlp->nlp_type |= NLP_NVME_INITIATOR;
994 }
995 if (npr->targetFunc) {
996 if (npr->prliType == PRLI_FCP_TYPE)
997 ndlp->nlp_type |= NLP_FCP_TARGET;
998 if (npr->prliType == PRLI_NVME_TYPE)
999 ndlp->nlp_type |= NLP_NVME_TARGET;
1000 if (npr->writeXferRdyDis)
1001 ndlp->nlp_flag |= NLP_FIRSTBURST;
1002 }
1003 if (npr->Retry && ndlp->nlp_type &
1004 (NLP_FCP_INITIATOR | NLP_FCP_TARGET))
1005 ndlp->nlp_fcp_info |= NLP_FCP_2_DEVICE;
1006
1007 if (npr->Retry && phba->nsler &&
1008 ndlp->nlp_type & (NLP_NVME_INITIATOR | NLP_NVME_TARGET))
1009 ndlp->nlp_nvme_info |= NLP_NVME_NSLER;
1010
1011
1012 /* If this driver is in nvme target mode, set the ndlp's fc4
1013 * type to NVME provided the PRLI response claims NVME FC4
1014 * type. Target mode does not issue gft_id so doesn't get
1015 * the fc4 type set until now.
1016 */
1017 if (phba->nvmet_support && (npr->prliType == PRLI_NVME_TYPE)) {
1018 ndlp->nlp_fc4_type |= NLP_FC4_NVME;
1019 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1020 }
1021 if (npr->prliType == PRLI_FCP_TYPE)
1022 ndlp->nlp_fc4_type |= NLP_FC4_FCP;
1023 }
1024 if (rport) {
1025 /* We need to update the rport role values */
1026 roles = FC_RPORT_ROLE_UNKNOWN;
1027 if (ndlp->nlp_type & NLP_FCP_INITIATOR)
1028 roles |= FC_RPORT_ROLE_FCP_INITIATOR;
1029 if (ndlp->nlp_type & NLP_FCP_TARGET)
1030 roles |= FC_RPORT_ROLE_FCP_TARGET;
1031
1032 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
1033 "rport rolechg: role:x%x did:x%x flg:x%x",
1034 roles, ndlp->nlp_DID, ndlp->nlp_flag);
1035
1036 if (vport->cfg_enable_fc4_type != LPFC_ENABLE_NVME)
1037 fc_remote_port_rolechg(rport, roles);
1038 }
1039 }
1040
1041 static uint32_t
lpfc_disc_set_adisc(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp)1042 lpfc_disc_set_adisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
1043 {
1044 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1045
1046 if (!(ndlp->nlp_flag & NLP_RPI_REGISTERED)) {
1047 spin_lock_irq(shost->host_lock);
1048 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
1049 spin_unlock_irq(shost->host_lock);
1050 return 0;
1051 }
1052
1053 if (!(vport->fc_flag & FC_PT2PT)) {
1054 /* Check config parameter use-adisc or FCP-2 */
1055 if (vport->cfg_use_adisc && ((vport->fc_flag & FC_RSCN_MODE) ||
1056 ((ndlp->nlp_fcp_info & NLP_FCP_2_DEVICE) &&
1057 (ndlp->nlp_type & NLP_FCP_TARGET)))) {
1058 spin_lock_irq(shost->host_lock);
1059 ndlp->nlp_flag |= NLP_NPR_ADISC;
1060 spin_unlock_irq(shost->host_lock);
1061 return 1;
1062 }
1063 }
1064
1065 spin_lock_irq(shost->host_lock);
1066 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
1067 spin_unlock_irq(shost->host_lock);
1068 lpfc_unreg_rpi(vport, ndlp);
1069 return 0;
1070 }
1071
1072 /**
1073 * lpfc_release_rpi - Release a RPI by issuing unreg_login mailbox cmd.
1074 * @phba : Pointer to lpfc_hba structure.
1075 * @vport: Pointer to lpfc_vport structure.
1076 * @ndlp: Pointer to lpfc_nodelist structure.
1077 * @rpi : rpi to be release.
1078 *
1079 * This function will send a unreg_login mailbox command to the firmware
1080 * to release a rpi.
1081 **/
1082 static void
lpfc_release_rpi(struct lpfc_hba * phba,struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,uint16_t rpi)1083 lpfc_release_rpi(struct lpfc_hba *phba, struct lpfc_vport *vport,
1084 struct lpfc_nodelist *ndlp, uint16_t rpi)
1085 {
1086 LPFC_MBOXQ_t *pmb;
1087 int rc;
1088
1089 /* If there is already an UNREG in progress for this ndlp,
1090 * no need to queue up another one.
1091 */
1092 if (ndlp->nlp_flag & NLP_UNREG_INP) {
1093 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
1094 "1435 release_rpi SKIP UNREG x%x on "
1095 "NPort x%x deferred x%x flg x%x "
1096 "Data: x%px\n",
1097 ndlp->nlp_rpi, ndlp->nlp_DID,
1098 ndlp->nlp_defer_did,
1099 ndlp->nlp_flag, ndlp);
1100 return;
1101 }
1102
1103 pmb = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool,
1104 GFP_KERNEL);
1105 if (!pmb)
1106 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
1107 "2796 mailbox memory allocation failed \n");
1108 else {
1109 lpfc_unreg_login(phba, vport->vpi, rpi, pmb);
1110 pmb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
1111 pmb->vport = vport;
1112 pmb->ctx_ndlp = ndlp;
1113
1114 if (((ndlp->nlp_DID & Fabric_DID_MASK) != Fabric_DID_MASK) &&
1115 (!(vport->fc_flag & FC_OFFLINE_MODE)))
1116 ndlp->nlp_flag |= NLP_UNREG_INP;
1117
1118 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
1119 "1437 release_rpi UNREG x%x "
1120 "on NPort x%x flg x%x\n",
1121 ndlp->nlp_rpi, ndlp->nlp_DID, ndlp->nlp_flag);
1122
1123 rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);
1124 if (rc == MBX_NOT_FINISHED)
1125 mempool_free(pmb, phba->mbox_mem_pool);
1126 }
1127 }
1128
1129 static uint32_t
lpfc_disc_illegal(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1130 lpfc_disc_illegal(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1131 void *arg, uint32_t evt)
1132 {
1133 struct lpfc_hba *phba;
1134 LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg;
1135 uint16_t rpi;
1136
1137 phba = vport->phba;
1138 /* Release the RPI if reglogin completing */
1139 if (!(phba->pport->load_flag & FC_UNLOADING) &&
1140 (evt == NLP_EVT_CMPL_REG_LOGIN) &&
1141 (!pmb->u.mb.mbxStatus)) {
1142 rpi = pmb->u.mb.un.varWords[0];
1143 lpfc_release_rpi(phba, vport, ndlp, rpi);
1144 }
1145 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
1146 "0271 Illegal State Transition: node x%x "
1147 "event x%x, state x%x Data: x%x x%x\n",
1148 ndlp->nlp_DID, evt, ndlp->nlp_state, ndlp->nlp_rpi,
1149 ndlp->nlp_flag);
1150 return ndlp->nlp_state;
1151 }
1152
1153 static uint32_t
lpfc_cmpl_plogi_illegal(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1154 lpfc_cmpl_plogi_illegal(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1155 void *arg, uint32_t evt)
1156 {
1157 /* This transition is only legal if we previously
1158 * rcv'ed a PLOGI. Since we don't want 2 discovery threads
1159 * working on the same NPortID, do nothing for this thread
1160 * to stop it.
1161 */
1162 if (!(ndlp->nlp_flag & NLP_RCV_PLOGI)) {
1163 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
1164 "0272 Illegal State Transition: node x%x "
1165 "event x%x, state x%x Data: x%x x%x\n",
1166 ndlp->nlp_DID, evt, ndlp->nlp_state,
1167 ndlp->nlp_rpi, ndlp->nlp_flag);
1168 }
1169 return ndlp->nlp_state;
1170 }
1171
1172 /* Start of Discovery State Machine routines */
1173
1174 static uint32_t
lpfc_rcv_plogi_unused_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1175 lpfc_rcv_plogi_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1176 void *arg, uint32_t evt)
1177 {
1178 struct lpfc_iocbq *cmdiocb;
1179
1180 cmdiocb = (struct lpfc_iocbq *) arg;
1181
1182 if (lpfc_rcv_plogi(vport, ndlp, cmdiocb)) {
1183 return ndlp->nlp_state;
1184 }
1185 return NLP_STE_FREED_NODE;
1186 }
1187
1188 static uint32_t
lpfc_rcv_els_unused_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1189 lpfc_rcv_els_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1190 void *arg, uint32_t evt)
1191 {
1192 lpfc_issue_els_logo(vport, ndlp, 0);
1193 return ndlp->nlp_state;
1194 }
1195
1196 static uint32_t
lpfc_rcv_logo_unused_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1197 lpfc_rcv_logo_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1198 void *arg, uint32_t evt)
1199 {
1200 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1201 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1202
1203 spin_lock_irq(shost->host_lock);
1204 ndlp->nlp_flag |= NLP_LOGO_ACC;
1205 spin_unlock_irq(shost->host_lock);
1206 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
1207
1208 return ndlp->nlp_state;
1209 }
1210
1211 static uint32_t
lpfc_cmpl_logo_unused_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1212 lpfc_cmpl_logo_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1213 void *arg, uint32_t evt)
1214 {
1215 return NLP_STE_FREED_NODE;
1216 }
1217
1218 static uint32_t
lpfc_device_rm_unused_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1219 lpfc_device_rm_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1220 void *arg, uint32_t evt)
1221 {
1222 return NLP_STE_FREED_NODE;
1223 }
1224
1225 static uint32_t
lpfc_device_recov_unused_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1226 lpfc_device_recov_unused_node(struct lpfc_vport *vport,
1227 struct lpfc_nodelist *ndlp,
1228 void *arg, uint32_t evt)
1229 {
1230 return ndlp->nlp_state;
1231 }
1232
1233 static uint32_t
lpfc_rcv_plogi_plogi_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1234 lpfc_rcv_plogi_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1235 void *arg, uint32_t evt)
1236 {
1237 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1238 struct lpfc_hba *phba = vport->phba;
1239 struct lpfc_iocbq *cmdiocb = arg;
1240 struct lpfc_dmabuf *pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
1241 uint32_t *lp = (uint32_t *) pcmd->virt;
1242 struct serv_parm *sp = (struct serv_parm *) (lp + 1);
1243 struct ls_rjt stat;
1244 int port_cmp;
1245
1246 memset(&stat, 0, sizeof (struct ls_rjt));
1247
1248 /* For a PLOGI, we only accept if our portname is less
1249 * than the remote portname.
1250 */
1251 phba->fc_stat.elsLogiCol++;
1252 port_cmp = memcmp(&vport->fc_portname, &sp->portName,
1253 sizeof(struct lpfc_name));
1254
1255 if (port_cmp >= 0) {
1256 /* Reject this request because the remote node will accept
1257 ours */
1258 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
1259 stat.un.b.lsRjtRsnCodeExp = LSEXP_CMD_IN_PROGRESS;
1260 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
1261 NULL);
1262 } else {
1263 if (lpfc_rcv_plogi(vport, ndlp, cmdiocb) &&
1264 (ndlp->nlp_flag & NLP_NPR_2B_DISC) &&
1265 (vport->num_disc_nodes)) {
1266 spin_lock_irq(shost->host_lock);
1267 ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
1268 spin_unlock_irq(shost->host_lock);
1269 /* Check if there are more PLOGIs to be sent */
1270 lpfc_more_plogi(vport);
1271 if (vport->num_disc_nodes == 0) {
1272 spin_lock_irq(shost->host_lock);
1273 vport->fc_flag &= ~FC_NDISC_ACTIVE;
1274 spin_unlock_irq(shost->host_lock);
1275 lpfc_can_disctmo(vport);
1276 lpfc_end_rscn(vport);
1277 }
1278 }
1279 } /* If our portname was less */
1280
1281 return ndlp->nlp_state;
1282 }
1283
1284 static uint32_t
lpfc_rcv_prli_plogi_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1285 lpfc_rcv_prli_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1286 void *arg, uint32_t evt)
1287 {
1288 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1289 struct ls_rjt stat;
1290
1291 memset(&stat, 0, sizeof (struct ls_rjt));
1292 stat.un.b.lsRjtRsnCode = LSRJT_LOGICAL_BSY;
1293 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
1294 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
1295 return ndlp->nlp_state;
1296 }
1297
1298 static uint32_t
lpfc_rcv_logo_plogi_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1299 lpfc_rcv_logo_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1300 void *arg, uint32_t evt)
1301 {
1302 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1303
1304 /* Retrieve RPI from LOGO IOCB. RPI is used for CMD_ABORT_XRI_CN */
1305 if (vport->phba->sli_rev == LPFC_SLI_REV3)
1306 ndlp->nlp_rpi = cmdiocb->iocb.ulpIoTag;
1307 /* software abort outstanding PLOGI */
1308 lpfc_els_abort(vport->phba, ndlp);
1309
1310 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1311 return ndlp->nlp_state;
1312 }
1313
1314 static uint32_t
lpfc_rcv_els_plogi_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1315 lpfc_rcv_els_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1316 void *arg, uint32_t evt)
1317 {
1318 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1319 struct lpfc_hba *phba = vport->phba;
1320 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1321
1322 /* software abort outstanding PLOGI */
1323 lpfc_els_abort(phba, ndlp);
1324
1325 if (evt == NLP_EVT_RCV_LOGO) {
1326 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
1327 } else {
1328 lpfc_issue_els_logo(vport, ndlp, 0);
1329 }
1330
1331 /* Put ndlp in npr state set plogi timer for 1 sec */
1332 mod_timer(&ndlp->nlp_delayfunc, jiffies + msecs_to_jiffies(1000 * 1));
1333 spin_lock_irq(shost->host_lock);
1334 ndlp->nlp_flag |= NLP_DELAY_TMO;
1335 spin_unlock_irq(shost->host_lock);
1336 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
1337 ndlp->nlp_prev_state = NLP_STE_PLOGI_ISSUE;
1338 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1339
1340 return ndlp->nlp_state;
1341 }
1342
1343 static uint32_t
lpfc_cmpl_plogi_plogi_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1344 lpfc_cmpl_plogi_plogi_issue(struct lpfc_vport *vport,
1345 struct lpfc_nodelist *ndlp,
1346 void *arg,
1347 uint32_t evt)
1348 {
1349 struct lpfc_hba *phba = vport->phba;
1350 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1351 struct lpfc_iocbq *cmdiocb, *rspiocb;
1352 struct lpfc_dmabuf *pcmd, *prsp, *mp;
1353 uint32_t *lp;
1354 uint32_t vid, flag;
1355 IOCB_t *irsp;
1356 struct serv_parm *sp;
1357 uint32_t ed_tov;
1358 LPFC_MBOXQ_t *mbox;
1359 int rc;
1360
1361 cmdiocb = (struct lpfc_iocbq *) arg;
1362 rspiocb = cmdiocb->context_un.rsp_iocb;
1363
1364 if (ndlp->nlp_flag & NLP_ACC_REGLOGIN) {
1365 /* Recovery from PLOGI collision logic */
1366 return ndlp->nlp_state;
1367 }
1368
1369 irsp = &rspiocb->iocb;
1370
1371 if (irsp->ulpStatus)
1372 goto out;
1373
1374 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
1375
1376 prsp = list_get_first(&pcmd->list, struct lpfc_dmabuf, list);
1377 if (!prsp)
1378 goto out;
1379
1380 lp = (uint32_t *) prsp->virt;
1381 sp = (struct serv_parm *) ((uint8_t *) lp + sizeof (uint32_t));
1382
1383 /* Some switches have FDMI servers returning 0 for WWN */
1384 if ((ndlp->nlp_DID != FDMI_DID) &&
1385 (wwn_to_u64(sp->portName.u.wwn) == 0 ||
1386 wwn_to_u64(sp->nodeName.u.wwn) == 0)) {
1387 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
1388 "0142 PLOGI RSP: Invalid WWN.\n");
1389 goto out;
1390 }
1391 if (!lpfc_check_sparm(vport, ndlp, sp, CLASS3, 0))
1392 goto out;
1393 /* PLOGI chkparm OK */
1394 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
1395 "0121 PLOGI chkparm OK Data: x%x x%x x%x x%x\n",
1396 ndlp->nlp_DID, ndlp->nlp_state,
1397 ndlp->nlp_flag, ndlp->nlp_rpi);
1398 if (vport->cfg_fcp_class == 2 && (sp->cls2.classValid))
1399 ndlp->nlp_fcp_info |= CLASS2;
1400 else
1401 ndlp->nlp_fcp_info |= CLASS3;
1402
1403 ndlp->nlp_class_sup = 0;
1404 if (sp->cls1.classValid)
1405 ndlp->nlp_class_sup |= FC_COS_CLASS1;
1406 if (sp->cls2.classValid)
1407 ndlp->nlp_class_sup |= FC_COS_CLASS2;
1408 if (sp->cls3.classValid)
1409 ndlp->nlp_class_sup |= FC_COS_CLASS3;
1410 if (sp->cls4.classValid)
1411 ndlp->nlp_class_sup |= FC_COS_CLASS4;
1412 ndlp->nlp_maxframe =
1413 ((sp->cmn.bbRcvSizeMsb & 0x0F) << 8) | sp->cmn.bbRcvSizeLsb;
1414
1415 if ((vport->fc_flag & FC_PT2PT) &&
1416 (vport->fc_flag & FC_PT2PT_PLOGI)) {
1417 ed_tov = be32_to_cpu(sp->cmn.e_d_tov);
1418 if (sp->cmn.edtovResolution) {
1419 /* E_D_TOV ticks are in nanoseconds */
1420 ed_tov = (phba->fc_edtov + 999999) / 1000000;
1421 }
1422
1423 ndlp->nlp_flag &= ~NLP_SUPPRESS_RSP;
1424 if ((phba->sli.sli_flag & LPFC_SLI_SUPPRESS_RSP) &&
1425 sp->cmn.valid_vendor_ver_level) {
1426 vid = be32_to_cpu(sp->un.vv.vid);
1427 flag = be32_to_cpu(sp->un.vv.flags);
1428 if ((vid == LPFC_VV_EMLX_ID) &&
1429 (flag & LPFC_VV_SUPPRESS_RSP))
1430 ndlp->nlp_flag |= NLP_SUPPRESS_RSP;
1431 }
1432
1433 /*
1434 * Use the larger EDTOV
1435 * RATOV = 2 * EDTOV for pt-to-pt
1436 */
1437 if (ed_tov > phba->fc_edtov)
1438 phba->fc_edtov = ed_tov;
1439 phba->fc_ratov = (2 * phba->fc_edtov) / 1000;
1440
1441 memcpy(&phba->fc_fabparam, sp, sizeof(struct serv_parm));
1442
1443 /* Issue config_link / reg_vfi to account for updated TOV's */
1444 if (phba->sli_rev == LPFC_SLI_REV4) {
1445 lpfc_issue_reg_vfi(vport);
1446 } else {
1447 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1448 if (!mbox) {
1449 lpfc_printf_vlog(vport, KERN_ERR,
1450 LOG_TRACE_EVENT,
1451 "0133 PLOGI: no memory "
1452 "for config_link "
1453 "Data: x%x x%x x%x x%x\n",
1454 ndlp->nlp_DID, ndlp->nlp_state,
1455 ndlp->nlp_flag, ndlp->nlp_rpi);
1456 goto out;
1457 }
1458
1459 lpfc_config_link(phba, mbox);
1460
1461 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
1462 mbox->vport = vport;
1463 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
1464 if (rc == MBX_NOT_FINISHED) {
1465 mempool_free(mbox, phba->mbox_mem_pool);
1466 goto out;
1467 }
1468 }
1469 }
1470
1471 lpfc_unreg_rpi(vport, ndlp);
1472
1473 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1474 if (!mbox) {
1475 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
1476 "0018 PLOGI: no memory for reg_login "
1477 "Data: x%x x%x x%x x%x\n",
1478 ndlp->nlp_DID, ndlp->nlp_state,
1479 ndlp->nlp_flag, ndlp->nlp_rpi);
1480 goto out;
1481 }
1482
1483 if (lpfc_reg_rpi(phba, vport->vpi, irsp->un.elsreq64.remoteID,
1484 (uint8_t *) sp, mbox, ndlp->nlp_rpi) == 0) {
1485 switch (ndlp->nlp_DID) {
1486 case NameServer_DID:
1487 mbox->mbox_cmpl = lpfc_mbx_cmpl_ns_reg_login;
1488 break;
1489 case FDMI_DID:
1490 mbox->mbox_cmpl = lpfc_mbx_cmpl_fdmi_reg_login;
1491 break;
1492 default:
1493 ndlp->nlp_flag |= NLP_REG_LOGIN_SEND;
1494 mbox->mbox_cmpl = lpfc_mbx_cmpl_reg_login;
1495 }
1496 mbox->ctx_ndlp = lpfc_nlp_get(ndlp);
1497 mbox->vport = vport;
1498 if (lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT)
1499 != MBX_NOT_FINISHED) {
1500 lpfc_nlp_set_state(vport, ndlp,
1501 NLP_STE_REG_LOGIN_ISSUE);
1502 return ndlp->nlp_state;
1503 }
1504 if (ndlp->nlp_flag & NLP_REG_LOGIN_SEND)
1505 ndlp->nlp_flag &= ~NLP_REG_LOGIN_SEND;
1506 /* decrement node reference count to the failed mbox
1507 * command
1508 */
1509 lpfc_nlp_put(ndlp);
1510 mp = (struct lpfc_dmabuf *)mbox->ctx_buf;
1511 lpfc_mbuf_free(phba, mp->virt, mp->phys);
1512 kfree(mp);
1513 mempool_free(mbox, phba->mbox_mem_pool);
1514
1515 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
1516 "0134 PLOGI: cannot issue reg_login "
1517 "Data: x%x x%x x%x x%x\n",
1518 ndlp->nlp_DID, ndlp->nlp_state,
1519 ndlp->nlp_flag, ndlp->nlp_rpi);
1520 } else {
1521 mempool_free(mbox, phba->mbox_mem_pool);
1522
1523 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
1524 "0135 PLOGI: cannot format reg_login "
1525 "Data: x%x x%x x%x x%x\n",
1526 ndlp->nlp_DID, ndlp->nlp_state,
1527 ndlp->nlp_flag, ndlp->nlp_rpi);
1528 }
1529
1530
1531 out:
1532 if (ndlp->nlp_DID == NameServer_DID) {
1533 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
1534 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
1535 "0261 Cannot Register NameServer login\n");
1536 }
1537
1538 /*
1539 ** In case the node reference counter does not go to zero, ensure that
1540 ** the stale state for the node is not processed.
1541 */
1542
1543 ndlp->nlp_prev_state = ndlp->nlp_state;
1544 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1545 spin_lock_irq(shost->host_lock);
1546 ndlp->nlp_flag |= NLP_DEFER_RM;
1547 spin_unlock_irq(shost->host_lock);
1548 return NLP_STE_FREED_NODE;
1549 }
1550
1551 static uint32_t
lpfc_cmpl_logo_plogi_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1552 lpfc_cmpl_logo_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1553 void *arg, uint32_t evt)
1554 {
1555 return ndlp->nlp_state;
1556 }
1557
1558 static uint32_t
lpfc_cmpl_reglogin_plogi_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1559 lpfc_cmpl_reglogin_plogi_issue(struct lpfc_vport *vport,
1560 struct lpfc_nodelist *ndlp, void *arg, uint32_t evt)
1561 {
1562 struct lpfc_hba *phba;
1563 LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg;
1564 MAILBOX_t *mb = &pmb->u.mb;
1565 uint16_t rpi;
1566
1567 phba = vport->phba;
1568 /* Release the RPI */
1569 if (!(phba->pport->load_flag & FC_UNLOADING) &&
1570 !mb->mbxStatus) {
1571 rpi = pmb->u.mb.un.varWords[0];
1572 lpfc_release_rpi(phba, vport, ndlp, rpi);
1573 }
1574 return ndlp->nlp_state;
1575 }
1576
1577 static uint32_t
lpfc_device_rm_plogi_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1578 lpfc_device_rm_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1579 void *arg, uint32_t evt)
1580 {
1581 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1582
1583 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1584 spin_lock_irq(shost->host_lock);
1585 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1586 spin_unlock_irq(shost->host_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 Scsi_Host *shost = lpfc_shost_from_vport(vport);
1604 struct lpfc_hba *phba = vport->phba;
1605
1606 /* Don't do anything that will mess up processing of the
1607 * previous RSCN.
1608 */
1609 if (vport->fc_flag & FC_RSCN_DEFERRED)
1610 return ndlp->nlp_state;
1611
1612 /* software abort outstanding PLOGI */
1613 lpfc_els_abort(phba, ndlp);
1614
1615 ndlp->nlp_prev_state = NLP_STE_PLOGI_ISSUE;
1616 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1617 spin_lock_irq(shost->host_lock);
1618 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1619 spin_unlock_irq(shost->host_lock);
1620
1621 return ndlp->nlp_state;
1622 }
1623
1624 static uint32_t
lpfc_rcv_plogi_adisc_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1625 lpfc_rcv_plogi_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1626 void *arg, uint32_t evt)
1627 {
1628 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1629 struct lpfc_hba *phba = vport->phba;
1630 struct lpfc_iocbq *cmdiocb;
1631
1632 /* software abort outstanding ADISC */
1633 lpfc_els_abort(phba, ndlp);
1634
1635 cmdiocb = (struct lpfc_iocbq *) arg;
1636
1637 if (lpfc_rcv_plogi(vport, ndlp, cmdiocb)) {
1638 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1639 spin_lock_irq(shost->host_lock);
1640 ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
1641 spin_unlock_irq(shost->host_lock);
1642 if (vport->num_disc_nodes)
1643 lpfc_more_adisc(vport);
1644 }
1645 return ndlp->nlp_state;
1646 }
1647 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1648 lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
1649 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
1650
1651 return ndlp->nlp_state;
1652 }
1653
1654 static uint32_t
lpfc_rcv_prli_adisc_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1655 lpfc_rcv_prli_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1656 void *arg, uint32_t evt)
1657 {
1658 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1659
1660 if (lpfc_rcv_prli_support_check(vport, ndlp, cmdiocb))
1661 lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1662 return ndlp->nlp_state;
1663 }
1664
1665 static uint32_t
lpfc_rcv_logo_adisc_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1666 lpfc_rcv_logo_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1667 void *arg, uint32_t evt)
1668 {
1669 struct lpfc_hba *phba = vport->phba;
1670 struct lpfc_iocbq *cmdiocb;
1671
1672 cmdiocb = (struct lpfc_iocbq *) arg;
1673
1674 /* software abort outstanding ADISC */
1675 lpfc_els_abort(phba, ndlp);
1676
1677 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1678 return ndlp->nlp_state;
1679 }
1680
1681 static uint32_t
lpfc_rcv_padisc_adisc_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1682 lpfc_rcv_padisc_adisc_issue(struct lpfc_vport *vport,
1683 struct lpfc_nodelist *ndlp,
1684 void *arg, uint32_t evt)
1685 {
1686 struct lpfc_iocbq *cmdiocb;
1687
1688 cmdiocb = (struct lpfc_iocbq *) arg;
1689
1690 lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1691 return ndlp->nlp_state;
1692 }
1693
1694 static uint32_t
lpfc_rcv_prlo_adisc_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1695 lpfc_rcv_prlo_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1696 void *arg, uint32_t evt)
1697 {
1698 struct lpfc_iocbq *cmdiocb;
1699
1700 cmdiocb = (struct lpfc_iocbq *) arg;
1701
1702 /* Treat like rcv logo */
1703 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_PRLO);
1704 return ndlp->nlp_state;
1705 }
1706
1707 static uint32_t
lpfc_cmpl_adisc_adisc_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1708 lpfc_cmpl_adisc_adisc_issue(struct lpfc_vport *vport,
1709 struct lpfc_nodelist *ndlp,
1710 void *arg, uint32_t evt)
1711 {
1712 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1713 struct lpfc_hba *phba = vport->phba;
1714 struct lpfc_iocbq *cmdiocb, *rspiocb;
1715 IOCB_t *irsp;
1716 ADISC *ap;
1717 int rc;
1718
1719 cmdiocb = (struct lpfc_iocbq *) arg;
1720 rspiocb = cmdiocb->context_un.rsp_iocb;
1721
1722 ap = (ADISC *)lpfc_check_elscmpl_iocb(phba, cmdiocb, rspiocb);
1723 irsp = &rspiocb->iocb;
1724
1725 if ((irsp->ulpStatus) ||
1726 (!lpfc_check_adisc(vport, ndlp, &ap->nodeName, &ap->portName))) {
1727 /* 1 sec timeout */
1728 mod_timer(&ndlp->nlp_delayfunc,
1729 jiffies + msecs_to_jiffies(1000));
1730 spin_lock_irq(shost->host_lock);
1731 ndlp->nlp_flag |= NLP_DELAY_TMO;
1732 spin_unlock_irq(shost->host_lock);
1733 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
1734
1735 memset(&ndlp->nlp_nodename, 0, sizeof(struct lpfc_name));
1736 memset(&ndlp->nlp_portname, 0, sizeof(struct lpfc_name));
1737
1738 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1739 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1740 lpfc_unreg_rpi(vport, ndlp);
1741 return ndlp->nlp_state;
1742 }
1743
1744 if (phba->sli_rev == LPFC_SLI_REV4) {
1745 rc = lpfc_sli4_resume_rpi(ndlp, NULL, NULL);
1746 if (rc) {
1747 /* Stay in state and retry. */
1748 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1749 return ndlp->nlp_state;
1750 }
1751 }
1752
1753 if (ndlp->nlp_type & NLP_FCP_TARGET)
1754 ndlp->nlp_fc4_type |= NLP_FC4_FCP;
1755
1756 if (ndlp->nlp_type & NLP_NVME_TARGET)
1757 ndlp->nlp_fc4_type |= NLP_FC4_NVME;
1758
1759 if (ndlp->nlp_type & (NLP_FCP_TARGET | NLP_NVME_TARGET)) {
1760 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1761 lpfc_nlp_set_state(vport, ndlp, NLP_STE_MAPPED_NODE);
1762 } else {
1763 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1764 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1765 }
1766
1767 return ndlp->nlp_state;
1768 }
1769
1770 static uint32_t
lpfc_device_rm_adisc_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1771 lpfc_device_rm_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1772 void *arg, uint32_t evt)
1773 {
1774 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1775
1776 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1777 spin_lock_irq(shost->host_lock);
1778 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1779 spin_unlock_irq(shost->host_lock);
1780 return ndlp->nlp_state;
1781 } else {
1782 /* software abort outstanding ADISC */
1783 lpfc_els_abort(vport->phba, ndlp);
1784
1785 lpfc_drop_node(vport, ndlp);
1786 return NLP_STE_FREED_NODE;
1787 }
1788 }
1789
1790 static uint32_t
lpfc_device_recov_adisc_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1791 lpfc_device_recov_adisc_issue(struct lpfc_vport *vport,
1792 struct lpfc_nodelist *ndlp,
1793 void *arg,
1794 uint32_t evt)
1795 {
1796 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1797 struct lpfc_hba *phba = vport->phba;
1798
1799 /* Don't do anything that will mess up processing of the
1800 * previous RSCN.
1801 */
1802 if (vport->fc_flag & FC_RSCN_DEFERRED)
1803 return ndlp->nlp_state;
1804
1805 /* software abort outstanding ADISC */
1806 lpfc_els_abort(phba, ndlp);
1807
1808 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1809 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1810 spin_lock_irq(shost->host_lock);
1811 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1812 spin_unlock_irq(shost->host_lock);
1813 lpfc_disc_set_adisc(vport, ndlp);
1814 return ndlp->nlp_state;
1815 }
1816
1817 static uint32_t
lpfc_rcv_plogi_reglogin_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1818 lpfc_rcv_plogi_reglogin_issue(struct lpfc_vport *vport,
1819 struct lpfc_nodelist *ndlp,
1820 void *arg,
1821 uint32_t evt)
1822 {
1823 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1824
1825 lpfc_rcv_plogi(vport, ndlp, cmdiocb);
1826 return ndlp->nlp_state;
1827 }
1828
1829 static uint32_t
lpfc_rcv_prli_reglogin_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1830 lpfc_rcv_prli_reglogin_issue(struct lpfc_vport *vport,
1831 struct lpfc_nodelist *ndlp,
1832 void *arg,
1833 uint32_t evt)
1834 {
1835 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1836 struct ls_rjt stat;
1837
1838 if (!lpfc_rcv_prli_support_check(vport, ndlp, cmdiocb)) {
1839 return ndlp->nlp_state;
1840 }
1841 if (vport->phba->nvmet_support) {
1842 /* NVME Target mode. Handle and respond to the PRLI and
1843 * transition to UNMAPPED provided the RPI has completed
1844 * registration.
1845 */
1846 if (ndlp->nlp_flag & NLP_RPI_REGISTERED) {
1847 lpfc_rcv_prli(vport, ndlp, cmdiocb);
1848 lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1849 } else {
1850 /* RPI registration has not completed. Reject the PRLI
1851 * to prevent an illegal state transition when the
1852 * rpi registration does complete.
1853 */
1854 memset(&stat, 0, sizeof(struct ls_rjt));
1855 stat.un.b.lsRjtRsnCode = LSRJT_LOGICAL_BSY;
1856 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
1857 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb,
1858 ndlp, NULL);
1859 return ndlp->nlp_state;
1860 }
1861 } else {
1862 /* Initiator mode. */
1863 lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1864 }
1865 return ndlp->nlp_state;
1866 }
1867
1868 static uint32_t
lpfc_rcv_logo_reglogin_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1869 lpfc_rcv_logo_reglogin_issue(struct lpfc_vport *vport,
1870 struct lpfc_nodelist *ndlp,
1871 void *arg,
1872 uint32_t evt)
1873 {
1874 struct lpfc_hba *phba = vport->phba;
1875 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1876 LPFC_MBOXQ_t *mb;
1877 LPFC_MBOXQ_t *nextmb;
1878 struct lpfc_dmabuf *mp;
1879 struct lpfc_nodelist *ns_ndlp;
1880
1881 cmdiocb = (struct lpfc_iocbq *) arg;
1882
1883 /* cleanup any ndlp on mbox q waiting for reglogin cmpl */
1884 if ((mb = phba->sli.mbox_active)) {
1885 if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) &&
1886 (ndlp == (struct lpfc_nodelist *)mb->ctx_ndlp)) {
1887 ndlp->nlp_flag &= ~NLP_REG_LOGIN_SEND;
1888 lpfc_nlp_put(ndlp);
1889 mb->ctx_ndlp = NULL;
1890 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
1891 }
1892 }
1893
1894 spin_lock_irq(&phba->hbalock);
1895 list_for_each_entry_safe(mb, nextmb, &phba->sli.mboxq, list) {
1896 if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) &&
1897 (ndlp == (struct lpfc_nodelist *)mb->ctx_ndlp)) {
1898 mp = (struct lpfc_dmabuf *)(mb->ctx_buf);
1899 if (mp) {
1900 __lpfc_mbuf_free(phba, mp->virt, mp->phys);
1901 kfree(mp);
1902 }
1903 ndlp->nlp_flag &= ~NLP_REG_LOGIN_SEND;
1904 lpfc_nlp_put(ndlp);
1905 list_del(&mb->list);
1906 phba->sli.mboxq_cnt--;
1907 mempool_free(mb, phba->mbox_mem_pool);
1908 }
1909 }
1910 spin_unlock_irq(&phba->hbalock);
1911
1912 /* software abort if any GID_FT is outstanding */
1913 if (vport->cfg_enable_fc4_type != LPFC_ENABLE_FCP) {
1914 ns_ndlp = lpfc_findnode_did(vport, NameServer_DID);
1915 if (ns_ndlp && NLP_CHK_NODE_ACT(ns_ndlp))
1916 lpfc_els_abort(phba, ns_ndlp);
1917 }
1918
1919 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1920 return ndlp->nlp_state;
1921 }
1922
1923 static uint32_t
lpfc_rcv_padisc_reglogin_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1924 lpfc_rcv_padisc_reglogin_issue(struct lpfc_vport *vport,
1925 struct lpfc_nodelist *ndlp,
1926 void *arg,
1927 uint32_t evt)
1928 {
1929 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1930
1931 lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1932 return ndlp->nlp_state;
1933 }
1934
1935 static uint32_t
lpfc_rcv_prlo_reglogin_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1936 lpfc_rcv_prlo_reglogin_issue(struct lpfc_vport *vport,
1937 struct lpfc_nodelist *ndlp,
1938 void *arg,
1939 uint32_t evt)
1940 {
1941 struct lpfc_iocbq *cmdiocb;
1942
1943 cmdiocb = (struct lpfc_iocbq *) arg;
1944 lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
1945 return ndlp->nlp_state;
1946 }
1947
1948 static uint32_t
lpfc_cmpl_reglogin_reglogin_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1949 lpfc_cmpl_reglogin_reglogin_issue(struct lpfc_vport *vport,
1950 struct lpfc_nodelist *ndlp,
1951 void *arg,
1952 uint32_t evt)
1953 {
1954 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1955 struct lpfc_hba *phba = vport->phba;
1956 LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg;
1957 MAILBOX_t *mb = &pmb->u.mb;
1958 uint32_t did = mb->un.varWords[1];
1959
1960 if (mb->mbxStatus) {
1961 /* RegLogin failed */
1962 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
1963 "0246 RegLogin failed Data: x%x x%x x%x x%x "
1964 "x%x\n",
1965 did, mb->mbxStatus, vport->port_state,
1966 mb->un.varRegLogin.vpi,
1967 mb->un.varRegLogin.rpi);
1968 /*
1969 * If RegLogin failed due to lack of HBA resources do not
1970 * retry discovery.
1971 */
1972 if (mb->mbxStatus == MBXERR_RPI_FULL) {
1973 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1974 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1975 return ndlp->nlp_state;
1976 }
1977
1978 /* Put ndlp in npr state set plogi timer for 1 sec */
1979 mod_timer(&ndlp->nlp_delayfunc,
1980 jiffies + msecs_to_jiffies(1000 * 1));
1981 spin_lock_irq(shost->host_lock);
1982 ndlp->nlp_flag |= NLP_DELAY_TMO;
1983 spin_unlock_irq(shost->host_lock);
1984 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
1985
1986 lpfc_issue_els_logo(vport, ndlp, 0);
1987 return ndlp->nlp_state;
1988 }
1989
1990 /* SLI4 ports have preallocated logical rpis. */
1991 if (phba->sli_rev < LPFC_SLI_REV4)
1992 ndlp->nlp_rpi = mb->un.varWords[0];
1993
1994 ndlp->nlp_flag |= NLP_RPI_REGISTERED;
1995
1996 /* Only if we are not a fabric nport do we issue PRLI */
1997 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
1998 "3066 RegLogin Complete on x%x x%x x%x\n",
1999 did, ndlp->nlp_type, ndlp->nlp_fc4_type);
2000 if (!(ndlp->nlp_type & NLP_FABRIC) &&
2001 (phba->nvmet_support == 0)) {
2002 /* The driver supports FCP and NVME concurrently. If the
2003 * ndlp's nlp_fc4_type is still zero, the driver doesn't
2004 * know what PRLI to send yet. Figure that out now and
2005 * call PRLI depending on the outcome.
2006 */
2007 if (vport->fc_flag & FC_PT2PT) {
2008 /* If we are pt2pt, there is no Fabric to determine
2009 * the FC4 type of the remote nport. So if NVME
2010 * is configured try it.
2011 */
2012 ndlp->nlp_fc4_type |= NLP_FC4_FCP;
2013 if ((vport->cfg_enable_fc4_type == LPFC_ENABLE_BOTH) ||
2014 (vport->cfg_enable_fc4_type == LPFC_ENABLE_NVME)) {
2015 ndlp->nlp_fc4_type |= NLP_FC4_NVME;
2016 /* We need to update the localport also */
2017 lpfc_nvme_update_localport(vport);
2018 }
2019
2020 } else if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
2021 ndlp->nlp_fc4_type |= NLP_FC4_FCP;
2022
2023 } else if (ndlp->nlp_fc4_type == 0) {
2024 /* If we are only configured for FCP, the driver
2025 * should just issue PRLI for FCP. Otherwise issue
2026 * GFT_ID to determine if remote port supports NVME.
2027 */
2028 if (vport->cfg_enable_fc4_type != LPFC_ENABLE_FCP) {
2029 lpfc_ns_cmd(vport, SLI_CTNS_GFT_ID, 0,
2030 ndlp->nlp_DID);
2031 return ndlp->nlp_state;
2032 }
2033 ndlp->nlp_fc4_type = NLP_FC4_FCP;
2034 }
2035
2036 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
2037 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PRLI_ISSUE);
2038 if (lpfc_issue_els_prli(vport, ndlp, 0)) {
2039 lpfc_issue_els_logo(vport, ndlp, 0);
2040 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
2041 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
2042 }
2043 } else {
2044 if ((vport->fc_flag & FC_PT2PT) && phba->nvmet_support)
2045 phba->targetport->port_id = vport->fc_myDID;
2046
2047 /* Only Fabric ports should transition. NVME target
2048 * must complete PRLI.
2049 */
2050 if (ndlp->nlp_type & NLP_FABRIC) {
2051 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
2052 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
2053 }
2054 }
2055 return ndlp->nlp_state;
2056 }
2057
2058 static uint32_t
lpfc_device_rm_reglogin_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2059 lpfc_device_rm_reglogin_issue(struct lpfc_vport *vport,
2060 struct lpfc_nodelist *ndlp,
2061 void *arg,
2062 uint32_t evt)
2063 {
2064 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2065
2066 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
2067 spin_lock_irq(shost->host_lock);
2068 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
2069 spin_unlock_irq(shost->host_lock);
2070 return ndlp->nlp_state;
2071 } else {
2072 lpfc_drop_node(vport, ndlp);
2073 return NLP_STE_FREED_NODE;
2074 }
2075 }
2076
2077 static uint32_t
lpfc_device_recov_reglogin_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2078 lpfc_device_recov_reglogin_issue(struct lpfc_vport *vport,
2079 struct lpfc_nodelist *ndlp,
2080 void *arg,
2081 uint32_t evt)
2082 {
2083 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2084
2085 /* Don't do anything that will mess up processing of the
2086 * previous RSCN.
2087 */
2088 if (vport->fc_flag & FC_RSCN_DEFERRED)
2089 return ndlp->nlp_state;
2090
2091 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
2092 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
2093 spin_lock_irq(shost->host_lock);
2094
2095 /* If we are a target we won't immediately transition into PRLI,
2096 * so if REG_LOGIN already completed we don't need to ignore it.
2097 */
2098 if (!(ndlp->nlp_flag & NLP_RPI_REGISTERED) ||
2099 !vport->phba->nvmet_support)
2100 ndlp->nlp_flag |= NLP_IGNR_REG_CMPL;
2101
2102 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
2103 spin_unlock_irq(shost->host_lock);
2104 lpfc_disc_set_adisc(vport, ndlp);
2105 return ndlp->nlp_state;
2106 }
2107
2108 static uint32_t
lpfc_rcv_plogi_prli_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2109 lpfc_rcv_plogi_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2110 void *arg, uint32_t evt)
2111 {
2112 struct lpfc_iocbq *cmdiocb;
2113
2114 cmdiocb = (struct lpfc_iocbq *) arg;
2115
2116 lpfc_rcv_plogi(vport, ndlp, cmdiocb);
2117 return ndlp->nlp_state;
2118 }
2119
2120 static uint32_t
lpfc_rcv_prli_prli_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2121 lpfc_rcv_prli_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2122 void *arg, uint32_t evt)
2123 {
2124 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2125
2126 if (!lpfc_rcv_prli_support_check(vport, ndlp, cmdiocb))
2127 return ndlp->nlp_state;
2128 lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
2129 return ndlp->nlp_state;
2130 }
2131
2132 static uint32_t
lpfc_rcv_logo_prli_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2133 lpfc_rcv_logo_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2134 void *arg, uint32_t evt)
2135 {
2136 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2137
2138 /* Software abort outstanding PRLI before sending acc */
2139 lpfc_els_abort(vport->phba, ndlp);
2140
2141 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
2142 return ndlp->nlp_state;
2143 }
2144
2145 static uint32_t
lpfc_rcv_padisc_prli_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2146 lpfc_rcv_padisc_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2147 void *arg, uint32_t evt)
2148 {
2149 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2150
2151 lpfc_rcv_padisc(vport, ndlp, cmdiocb);
2152 return ndlp->nlp_state;
2153 }
2154
2155 /* This routine is envoked when we rcv a PRLO request from a nport
2156 * we are logged into. We should send back a PRLO rsp setting the
2157 * appropriate bits.
2158 * NEXT STATE = PRLI_ISSUE
2159 */
2160 static uint32_t
lpfc_rcv_prlo_prli_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2161 lpfc_rcv_prlo_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2162 void *arg, uint32_t evt)
2163 {
2164 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2165
2166 lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
2167 return ndlp->nlp_state;
2168 }
2169
2170 static uint32_t
lpfc_cmpl_prli_prli_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2171 lpfc_cmpl_prli_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2172 void *arg, uint32_t evt)
2173 {
2174 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2175 struct lpfc_iocbq *cmdiocb, *rspiocb;
2176 struct lpfc_hba *phba = vport->phba;
2177 IOCB_t *irsp;
2178 PRLI *npr;
2179 struct lpfc_nvme_prli *nvpr;
2180 void *temp_ptr;
2181
2182 cmdiocb = (struct lpfc_iocbq *) arg;
2183 rspiocb = cmdiocb->context_un.rsp_iocb;
2184
2185 /* A solicited PRLI is either FCP or NVME. The PRLI cmd/rsp
2186 * format is different so NULL the two PRLI types so that the
2187 * driver correctly gets the correct context.
2188 */
2189 npr = NULL;
2190 nvpr = NULL;
2191 temp_ptr = lpfc_check_elscmpl_iocb(phba, cmdiocb, rspiocb);
2192 if (cmdiocb->iocb_flag & LPFC_PRLI_FCP_REQ)
2193 npr = (PRLI *) temp_ptr;
2194 else if (cmdiocb->iocb_flag & LPFC_PRLI_NVME_REQ)
2195 nvpr = (struct lpfc_nvme_prli *) temp_ptr;
2196
2197 irsp = &rspiocb->iocb;
2198 if (irsp->ulpStatus) {
2199 if ((vport->port_type == LPFC_NPIV_PORT) &&
2200 vport->cfg_restrict_login) {
2201 goto out;
2202 }
2203
2204 /* Adjust the nlp_type accordingly if the PRLI failed */
2205 if (npr)
2206 ndlp->nlp_fc4_type &= ~NLP_FC4_FCP;
2207 if (nvpr)
2208 ndlp->nlp_fc4_type &= ~NLP_FC4_NVME;
2209
2210 /* We can't set the DSM state till BOTH PRLIs complete */
2211 goto out_err;
2212 }
2213
2214 if (npr && (npr->acceptRspCode == PRLI_REQ_EXECUTED) &&
2215 (npr->prliType == PRLI_FCP_TYPE)) {
2216 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_DISC,
2217 "6028 FCP NPR PRLI Cmpl Init %d Target %d\n",
2218 npr->initiatorFunc,
2219 npr->targetFunc);
2220 if (npr->initiatorFunc)
2221 ndlp->nlp_type |= NLP_FCP_INITIATOR;
2222 if (npr->targetFunc) {
2223 ndlp->nlp_type |= NLP_FCP_TARGET;
2224 if (npr->writeXferRdyDis)
2225 ndlp->nlp_flag |= NLP_FIRSTBURST;
2226 }
2227 if (npr->Retry)
2228 ndlp->nlp_fcp_info |= NLP_FCP_2_DEVICE;
2229
2230 } else if (nvpr &&
2231 (bf_get_be32(prli_acc_rsp_code, nvpr) ==
2232 PRLI_REQ_EXECUTED) &&
2233 (bf_get_be32(prli_type_code, nvpr) ==
2234 PRLI_NVME_TYPE)) {
2235
2236 /* Complete setting up the remote ndlp personality. */
2237 if (bf_get_be32(prli_init, nvpr))
2238 ndlp->nlp_type |= NLP_NVME_INITIATOR;
2239
2240 if (phba->nsler && bf_get_be32(prli_nsler, nvpr) &&
2241 bf_get_be32(prli_conf, nvpr))
2242
2243 ndlp->nlp_nvme_info |= NLP_NVME_NSLER;
2244 else
2245 ndlp->nlp_nvme_info &= ~NLP_NVME_NSLER;
2246
2247 /* Target driver cannot solicit NVME FB. */
2248 if (bf_get_be32(prli_tgt, nvpr)) {
2249 /* Complete the nvme target roles. The transport
2250 * needs to know if the rport is capable of
2251 * discovery in addition to its role.
2252 */
2253 ndlp->nlp_type |= NLP_NVME_TARGET;
2254 if (bf_get_be32(prli_disc, nvpr))
2255 ndlp->nlp_type |= NLP_NVME_DISCOVERY;
2256
2257 /*
2258 * If prli_fba is set, the Target supports FirstBurst.
2259 * If prli_fb_sz is 0, the FirstBurst size is unlimited,
2260 * otherwise it defines the actual size supported by
2261 * the NVME Target.
2262 */
2263 if ((bf_get_be32(prli_fba, nvpr) == 1) &&
2264 (phba->cfg_nvme_enable_fb) &&
2265 (!phba->nvmet_support)) {
2266 /* Both sides support FB. The target's first
2267 * burst size is a 512 byte encoded value.
2268 */
2269 ndlp->nlp_flag |= NLP_FIRSTBURST;
2270 ndlp->nvme_fb_size = bf_get_be32(prli_fb_sz,
2271 nvpr);
2272
2273 /* Expressed in units of 512 bytes */
2274 if (ndlp->nvme_fb_size)
2275 ndlp->nvme_fb_size <<=
2276 LPFC_NVME_FB_SHIFT;
2277 else
2278 ndlp->nvme_fb_size = LPFC_NVME_MAX_FB;
2279 }
2280 }
2281
2282 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_DISC,
2283 "6029 NVME PRLI Cmpl w1 x%08x "
2284 "w4 x%08x w5 x%08x flag x%x, "
2285 "fcp_info x%x nlp_type x%x\n",
2286 be32_to_cpu(nvpr->word1),
2287 be32_to_cpu(nvpr->word4),
2288 be32_to_cpu(nvpr->word5),
2289 ndlp->nlp_flag, ndlp->nlp_fcp_info,
2290 ndlp->nlp_type);
2291 }
2292 if (!(ndlp->nlp_type & NLP_FCP_TARGET) &&
2293 (vport->port_type == LPFC_NPIV_PORT) &&
2294 vport->cfg_restrict_login) {
2295 out:
2296 spin_lock_irq(shost->host_lock);
2297 ndlp->nlp_flag |= NLP_TARGET_REMOVE;
2298 spin_unlock_irq(shost->host_lock);
2299 lpfc_issue_els_logo(vport, ndlp, 0);
2300
2301 ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
2302 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
2303 return ndlp->nlp_state;
2304 }
2305
2306 out_err:
2307 /* The ndlp state cannot move to MAPPED or UNMAPPED before all PRLIs
2308 * are complete.
2309 */
2310 if (ndlp->fc4_prli_sent == 0) {
2311 ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
2312 if (ndlp->nlp_type & (NLP_FCP_TARGET | NLP_NVME_TARGET))
2313 lpfc_nlp_set_state(vport, ndlp, NLP_STE_MAPPED_NODE);
2314 else if (ndlp->nlp_type &
2315 (NLP_FCP_INITIATOR | NLP_NVME_INITIATOR))
2316 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
2317 } else
2318 lpfc_printf_vlog(vport,
2319 KERN_INFO, LOG_ELS,
2320 "3067 PRLI's still outstanding "
2321 "on x%06x - count %d, Pend Node Mode "
2322 "transition...\n",
2323 ndlp->nlp_DID, ndlp->fc4_prli_sent);
2324
2325 return ndlp->nlp_state;
2326 }
2327
2328 /*! lpfc_device_rm_prli_issue
2329 *
2330 * \pre
2331 * \post
2332 * \param phba
2333 * \param ndlp
2334 * \param arg
2335 * \param evt
2336 * \return uint32_t
2337 *
2338 * \b Description:
2339 * This routine is envoked when we a request to remove a nport we are in the
2340 * process of PRLIing. We should software abort outstanding prli, unreg
2341 * login, send a logout. We will change node state to UNUSED_NODE, put it
2342 * on plogi list so it can be freed when LOGO completes.
2343 *
2344 */
2345
2346 static uint32_t
lpfc_device_rm_prli_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2347 lpfc_device_rm_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2348 void *arg, uint32_t evt)
2349 {
2350 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2351
2352 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
2353 spin_lock_irq(shost->host_lock);
2354 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
2355 spin_unlock_irq(shost->host_lock);
2356 return ndlp->nlp_state;
2357 } else {
2358 /* software abort outstanding PLOGI */
2359 lpfc_els_abort(vport->phba, ndlp);
2360
2361 lpfc_drop_node(vport, ndlp);
2362 return NLP_STE_FREED_NODE;
2363 }
2364 }
2365
2366
2367 /*! lpfc_device_recov_prli_issue
2368 *
2369 * \pre
2370 * \post
2371 * \param phba
2372 * \param ndlp
2373 * \param arg
2374 * \param evt
2375 * \return uint32_t
2376 *
2377 * \b Description:
2378 * The routine is envoked when the state of a device is unknown, like
2379 * during a link down. We should remove the nodelist entry from the
2380 * unmapped list, issue a UNREG_LOGIN, do a software abort of the
2381 * outstanding PRLI command, then free the node entry.
2382 */
2383 static uint32_t
lpfc_device_recov_prli_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2384 lpfc_device_recov_prli_issue(struct lpfc_vport *vport,
2385 struct lpfc_nodelist *ndlp,
2386 void *arg,
2387 uint32_t evt)
2388 {
2389 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2390 struct lpfc_hba *phba = vport->phba;
2391
2392 /* Don't do anything that will mess up processing of the
2393 * previous RSCN.
2394 */
2395 if (vport->fc_flag & FC_RSCN_DEFERRED)
2396 return ndlp->nlp_state;
2397
2398 /* software abort outstanding PRLI */
2399 lpfc_els_abort(phba, ndlp);
2400
2401 ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
2402 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
2403 spin_lock_irq(shost->host_lock);
2404 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
2405 spin_unlock_irq(shost->host_lock);
2406 lpfc_disc_set_adisc(vport, ndlp);
2407 return ndlp->nlp_state;
2408 }
2409
2410 static uint32_t
lpfc_rcv_plogi_logo_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2411 lpfc_rcv_plogi_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2412 void *arg, uint32_t evt)
2413 {
2414 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *)arg;
2415 struct ls_rjt stat;
2416
2417 memset(&stat, 0, sizeof(struct ls_rjt));
2418 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
2419 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
2420 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
2421 return ndlp->nlp_state;
2422 }
2423
2424 static uint32_t
lpfc_rcv_prli_logo_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2425 lpfc_rcv_prli_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2426 void *arg, uint32_t evt)
2427 {
2428 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *)arg;
2429 struct ls_rjt stat;
2430
2431 memset(&stat, 0, sizeof(struct ls_rjt));
2432 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
2433 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
2434 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
2435 return ndlp->nlp_state;
2436 }
2437
2438 static uint32_t
lpfc_rcv_logo_logo_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2439 lpfc_rcv_logo_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2440 void *arg, uint32_t evt)
2441 {
2442 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2443 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *)arg;
2444
2445 spin_lock_irq(shost->host_lock);
2446 ndlp->nlp_flag |= NLP_LOGO_ACC;
2447 spin_unlock_irq(shost->host_lock);
2448 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
2449 return ndlp->nlp_state;
2450 }
2451
2452 static uint32_t
lpfc_rcv_padisc_logo_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2453 lpfc_rcv_padisc_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2454 void *arg, uint32_t evt)
2455 {
2456 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *)arg;
2457 struct ls_rjt stat;
2458
2459 memset(&stat, 0, sizeof(struct ls_rjt));
2460 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
2461 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
2462 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
2463 return ndlp->nlp_state;
2464 }
2465
2466 static uint32_t
lpfc_rcv_prlo_logo_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2467 lpfc_rcv_prlo_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2468 void *arg, uint32_t evt)
2469 {
2470 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *)arg;
2471 struct ls_rjt stat;
2472
2473 memset(&stat, 0, sizeof(struct ls_rjt));
2474 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
2475 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
2476 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
2477 return ndlp->nlp_state;
2478 }
2479
2480 static uint32_t
lpfc_cmpl_logo_logo_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2481 lpfc_cmpl_logo_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2482 void *arg, uint32_t evt)
2483 {
2484 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2485
2486 ndlp->nlp_prev_state = NLP_STE_LOGO_ISSUE;
2487 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
2488 spin_lock_irq(shost->host_lock);
2489 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
2490 spin_unlock_irq(shost->host_lock);
2491 lpfc_disc_set_adisc(vport, ndlp);
2492 return ndlp->nlp_state;
2493 }
2494
2495 static uint32_t
lpfc_device_rm_logo_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2496 lpfc_device_rm_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2497 void *arg, uint32_t evt)
2498 {
2499 /*
2500 * DevLoss has timed out and is calling for Device Remove.
2501 * In this case, abort the LOGO and cleanup the ndlp
2502 */
2503
2504 lpfc_unreg_rpi(vport, ndlp);
2505 /* software abort outstanding PLOGI */
2506 lpfc_els_abort(vport->phba, ndlp);
2507 lpfc_drop_node(vport, ndlp);
2508 return NLP_STE_FREED_NODE;
2509 }
2510
2511 static uint32_t
lpfc_device_recov_logo_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2512 lpfc_device_recov_logo_issue(struct lpfc_vport *vport,
2513 struct lpfc_nodelist *ndlp,
2514 void *arg, uint32_t evt)
2515 {
2516 /*
2517 * Device Recovery events have no meaning for a node with a LOGO
2518 * outstanding. The LOGO has to complete first and handle the
2519 * node from that point.
2520 */
2521 return ndlp->nlp_state;
2522 }
2523
2524 static uint32_t
lpfc_rcv_plogi_unmap_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2525 lpfc_rcv_plogi_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2526 void *arg, uint32_t evt)
2527 {
2528 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2529
2530 lpfc_rcv_plogi(vport, ndlp, cmdiocb);
2531 return ndlp->nlp_state;
2532 }
2533
2534 static uint32_t
lpfc_rcv_prli_unmap_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2535 lpfc_rcv_prli_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2536 void *arg, uint32_t evt)
2537 {
2538 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2539
2540 if (!lpfc_rcv_prli_support_check(vport, ndlp, cmdiocb))
2541 return ndlp->nlp_state;
2542
2543 lpfc_rcv_prli(vport, ndlp, cmdiocb);
2544 lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
2545 return ndlp->nlp_state;
2546 }
2547
2548 static uint32_t
lpfc_rcv_logo_unmap_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2549 lpfc_rcv_logo_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2550 void *arg, uint32_t evt)
2551 {
2552 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2553
2554 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
2555 return ndlp->nlp_state;
2556 }
2557
2558 static uint32_t
lpfc_rcv_padisc_unmap_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2559 lpfc_rcv_padisc_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2560 void *arg, uint32_t evt)
2561 {
2562 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2563
2564 lpfc_rcv_padisc(vport, ndlp, cmdiocb);
2565 return ndlp->nlp_state;
2566 }
2567
2568 static uint32_t
lpfc_rcv_prlo_unmap_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2569 lpfc_rcv_prlo_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2570 void *arg, uint32_t evt)
2571 {
2572 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2573
2574 lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
2575 return ndlp->nlp_state;
2576 }
2577
2578 static uint32_t
lpfc_device_recov_unmap_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2579 lpfc_device_recov_unmap_node(struct lpfc_vport *vport,
2580 struct lpfc_nodelist *ndlp,
2581 void *arg,
2582 uint32_t evt)
2583 {
2584 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2585
2586 ndlp->nlp_prev_state = NLP_STE_UNMAPPED_NODE;
2587 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
2588 spin_lock_irq(shost->host_lock);
2589 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
2590 ndlp->nlp_fc4_type &= ~(NLP_FC4_FCP | NLP_FC4_NVME);
2591 spin_unlock_irq(shost->host_lock);
2592 lpfc_disc_set_adisc(vport, ndlp);
2593
2594 return ndlp->nlp_state;
2595 }
2596
2597 static uint32_t
lpfc_rcv_plogi_mapped_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2598 lpfc_rcv_plogi_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2599 void *arg, uint32_t evt)
2600 {
2601 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2602
2603 lpfc_rcv_plogi(vport, ndlp, cmdiocb);
2604 return ndlp->nlp_state;
2605 }
2606
2607 static uint32_t
lpfc_rcv_prli_mapped_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2608 lpfc_rcv_prli_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2609 void *arg, uint32_t evt)
2610 {
2611 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2612
2613 if (!lpfc_rcv_prli_support_check(vport, ndlp, cmdiocb))
2614 return ndlp->nlp_state;
2615 lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
2616 return ndlp->nlp_state;
2617 }
2618
2619 static uint32_t
lpfc_rcv_logo_mapped_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2620 lpfc_rcv_logo_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2621 void *arg, uint32_t evt)
2622 {
2623 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2624
2625 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
2626 return ndlp->nlp_state;
2627 }
2628
2629 static uint32_t
lpfc_rcv_padisc_mapped_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2630 lpfc_rcv_padisc_mapped_node(struct lpfc_vport *vport,
2631 struct lpfc_nodelist *ndlp,
2632 void *arg, uint32_t evt)
2633 {
2634 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2635
2636 lpfc_rcv_padisc(vport, ndlp, cmdiocb);
2637 return ndlp->nlp_state;
2638 }
2639
2640 static uint32_t
lpfc_rcv_prlo_mapped_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2641 lpfc_rcv_prlo_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2642 void *arg, uint32_t evt)
2643 {
2644 struct lpfc_hba *phba = vport->phba;
2645 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2646
2647 /* flush the target */
2648 lpfc_sli_abort_iocb(vport, &phba->sli.sli3_ring[LPFC_FCP_RING],
2649 ndlp->nlp_sid, 0, LPFC_CTX_TGT);
2650
2651 /* Treat like rcv logo */
2652 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_PRLO);
2653 return ndlp->nlp_state;
2654 }
2655
2656 static uint32_t
lpfc_device_recov_mapped_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2657 lpfc_device_recov_mapped_node(struct lpfc_vport *vport,
2658 struct lpfc_nodelist *ndlp,
2659 void *arg,
2660 uint32_t evt)
2661 {
2662 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2663
2664 ndlp->nlp_prev_state = NLP_STE_MAPPED_NODE;
2665 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
2666 spin_lock_irq(shost->host_lock);
2667 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
2668 ndlp->nlp_fc4_type &= ~(NLP_FC4_FCP | NLP_FC4_NVME);
2669 spin_unlock_irq(shost->host_lock);
2670 lpfc_disc_set_adisc(vport, ndlp);
2671 return ndlp->nlp_state;
2672 }
2673
2674 static uint32_t
lpfc_rcv_plogi_npr_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2675 lpfc_rcv_plogi_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2676 void *arg, uint32_t evt)
2677 {
2678 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2679 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2680
2681 /* Ignore PLOGI if we have an outstanding LOGO */
2682 if (ndlp->nlp_flag & (NLP_LOGO_SND | NLP_LOGO_ACC))
2683 return ndlp->nlp_state;
2684 if (lpfc_rcv_plogi(vport, ndlp, cmdiocb)) {
2685 lpfc_cancel_retry_delay_tmo(vport, ndlp);
2686 spin_lock_irq(shost->host_lock);
2687 ndlp->nlp_flag &= ~(NLP_NPR_ADISC | NLP_NPR_2B_DISC);
2688 spin_unlock_irq(shost->host_lock);
2689 } else if (!(ndlp->nlp_flag & NLP_NPR_2B_DISC)) {
2690 /* send PLOGI immediately, move to PLOGI issue state */
2691 if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) {
2692 ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
2693 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
2694 lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
2695 }
2696 }
2697 return ndlp->nlp_state;
2698 }
2699
2700 static uint32_t
lpfc_rcv_prli_npr_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2701 lpfc_rcv_prli_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2702 void *arg, uint32_t evt)
2703 {
2704 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2705 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2706 struct ls_rjt stat;
2707
2708 memset(&stat, 0, sizeof (struct ls_rjt));
2709 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
2710 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
2711 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
2712
2713 if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) {
2714 if (ndlp->nlp_flag & NLP_NPR_ADISC) {
2715 spin_lock_irq(shost->host_lock);
2716 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
2717 ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
2718 spin_unlock_irq(shost->host_lock);
2719 lpfc_nlp_set_state(vport, ndlp, NLP_STE_ADISC_ISSUE);
2720 lpfc_issue_els_adisc(vport, ndlp, 0);
2721 } else {
2722 ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
2723 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
2724 lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
2725 }
2726 }
2727 return ndlp->nlp_state;
2728 }
2729
2730 static uint32_t
lpfc_rcv_logo_npr_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2731 lpfc_rcv_logo_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2732 void *arg, uint32_t evt)
2733 {
2734 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2735
2736 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
2737 return ndlp->nlp_state;
2738 }
2739
2740 static uint32_t
lpfc_rcv_padisc_npr_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2741 lpfc_rcv_padisc_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2742 void *arg, uint32_t evt)
2743 {
2744 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2745
2746 lpfc_rcv_padisc(vport, ndlp, cmdiocb);
2747 /*
2748 * Do not start discovery if discovery is about to start
2749 * or discovery in progress for this node. Starting discovery
2750 * here will affect the counting of discovery threads.
2751 */
2752 if (!(ndlp->nlp_flag & NLP_DELAY_TMO) &&
2753 !(ndlp->nlp_flag & NLP_NPR_2B_DISC)) {
2754 if (ndlp->nlp_flag & NLP_NPR_ADISC) {
2755 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
2756 ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
2757 lpfc_nlp_set_state(vport, ndlp, NLP_STE_ADISC_ISSUE);
2758 lpfc_issue_els_adisc(vport, ndlp, 0);
2759 } else {
2760 ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
2761 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
2762 lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
2763 }
2764 }
2765 return ndlp->nlp_state;
2766 }
2767
2768 static uint32_t
lpfc_rcv_prlo_npr_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2769 lpfc_rcv_prlo_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2770 void *arg, uint32_t evt)
2771 {
2772 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2773 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2774
2775 spin_lock_irq(shost->host_lock);
2776 ndlp->nlp_flag |= NLP_LOGO_ACC;
2777 spin_unlock_irq(shost->host_lock);
2778
2779 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
2780
2781 if ((ndlp->nlp_flag & NLP_DELAY_TMO) == 0) {
2782 mod_timer(&ndlp->nlp_delayfunc,
2783 jiffies + msecs_to_jiffies(1000 * 1));
2784 spin_lock_irq(shost->host_lock);
2785 ndlp->nlp_flag |= NLP_DELAY_TMO;
2786 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
2787 spin_unlock_irq(shost->host_lock);
2788 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
2789 } else {
2790 spin_lock_irq(shost->host_lock);
2791 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
2792 spin_unlock_irq(shost->host_lock);
2793 }
2794 return ndlp->nlp_state;
2795 }
2796
2797 static uint32_t
lpfc_cmpl_plogi_npr_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2798 lpfc_cmpl_plogi_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2799 void *arg, uint32_t evt)
2800 {
2801 struct lpfc_iocbq *cmdiocb, *rspiocb;
2802 IOCB_t *irsp;
2803 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2804
2805 cmdiocb = (struct lpfc_iocbq *) arg;
2806 rspiocb = cmdiocb->context_un.rsp_iocb;
2807
2808 irsp = &rspiocb->iocb;
2809 if (irsp->ulpStatus) {
2810 spin_lock_irq(shost->host_lock);
2811 ndlp->nlp_flag |= NLP_DEFER_RM;
2812 spin_unlock_irq(shost->host_lock);
2813 return NLP_STE_FREED_NODE;
2814 }
2815 return ndlp->nlp_state;
2816 }
2817
2818 static uint32_t
lpfc_cmpl_prli_npr_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2819 lpfc_cmpl_prli_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2820 void *arg, uint32_t evt)
2821 {
2822 struct lpfc_iocbq *cmdiocb, *rspiocb;
2823 IOCB_t *irsp;
2824
2825 cmdiocb = (struct lpfc_iocbq *) arg;
2826 rspiocb = cmdiocb->context_un.rsp_iocb;
2827
2828 irsp = &rspiocb->iocb;
2829 if (irsp->ulpStatus && (ndlp->nlp_flag & NLP_NODEV_REMOVE)) {
2830 lpfc_drop_node(vport, ndlp);
2831 return NLP_STE_FREED_NODE;
2832 }
2833 return ndlp->nlp_state;
2834 }
2835
2836 static uint32_t
lpfc_cmpl_logo_npr_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2837 lpfc_cmpl_logo_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2838 void *arg, uint32_t evt)
2839 {
2840 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2841
2842 /* For the fabric port just clear the fc flags. */
2843 if (ndlp->nlp_DID == Fabric_DID) {
2844 spin_lock_irq(shost->host_lock);
2845 vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP);
2846 spin_unlock_irq(shost->host_lock);
2847 }
2848 lpfc_unreg_rpi(vport, ndlp);
2849 return ndlp->nlp_state;
2850 }
2851
2852 static uint32_t
lpfc_cmpl_adisc_npr_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2853 lpfc_cmpl_adisc_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2854 void *arg, uint32_t evt)
2855 {
2856 struct lpfc_iocbq *cmdiocb, *rspiocb;
2857 IOCB_t *irsp;
2858
2859 cmdiocb = (struct lpfc_iocbq *) arg;
2860 rspiocb = cmdiocb->context_un.rsp_iocb;
2861
2862 irsp = &rspiocb->iocb;
2863 if (irsp->ulpStatus && (ndlp->nlp_flag & NLP_NODEV_REMOVE)) {
2864 lpfc_drop_node(vport, ndlp);
2865 return NLP_STE_FREED_NODE;
2866 }
2867 return ndlp->nlp_state;
2868 }
2869
2870 static uint32_t
lpfc_cmpl_reglogin_npr_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2871 lpfc_cmpl_reglogin_npr_node(struct lpfc_vport *vport,
2872 struct lpfc_nodelist *ndlp,
2873 void *arg, uint32_t evt)
2874 {
2875 LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg;
2876 MAILBOX_t *mb = &pmb->u.mb;
2877
2878 if (!mb->mbxStatus) {
2879 /* SLI4 ports have preallocated logical rpis. */
2880 if (vport->phba->sli_rev < LPFC_SLI_REV4)
2881 ndlp->nlp_rpi = mb->un.varWords[0];
2882 ndlp->nlp_flag |= NLP_RPI_REGISTERED;
2883 if (ndlp->nlp_flag & NLP_LOGO_ACC) {
2884 lpfc_unreg_rpi(vport, ndlp);
2885 }
2886 } else {
2887 if (ndlp->nlp_flag & NLP_NODEV_REMOVE) {
2888 lpfc_drop_node(vport, ndlp);
2889 return NLP_STE_FREED_NODE;
2890 }
2891 }
2892 return ndlp->nlp_state;
2893 }
2894
2895 static uint32_t
lpfc_device_rm_npr_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2896 lpfc_device_rm_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2897 void *arg, uint32_t evt)
2898 {
2899 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2900
2901 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
2902 spin_lock_irq(shost->host_lock);
2903 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
2904 spin_unlock_irq(shost->host_lock);
2905 return ndlp->nlp_state;
2906 }
2907 lpfc_drop_node(vport, ndlp);
2908 return NLP_STE_FREED_NODE;
2909 }
2910
2911 static uint32_t
lpfc_device_recov_npr_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2912 lpfc_device_recov_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2913 void *arg, uint32_t evt)
2914 {
2915 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2916
2917 /* Don't do anything that will mess up processing of the
2918 * previous RSCN.
2919 */
2920 if (vport->fc_flag & FC_RSCN_DEFERRED)
2921 return ndlp->nlp_state;
2922
2923 lpfc_cancel_retry_delay_tmo(vport, ndlp);
2924 spin_lock_irq(shost->host_lock);
2925 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
2926 ndlp->nlp_fc4_type &= ~(NLP_FC4_FCP | NLP_FC4_NVME);
2927 spin_unlock_irq(shost->host_lock);
2928 return ndlp->nlp_state;
2929 }
2930
2931
2932 /* This next section defines the NPort Discovery State Machine */
2933
2934 /* There are 4 different double linked lists nodelist entries can reside on.
2935 * The plogi list and adisc list are used when Link Up discovery or RSCN
2936 * processing is needed. Each list holds the nodes that we will send PLOGI
2937 * or ADISC on. These lists will keep track of what nodes will be effected
2938 * by an RSCN, or a Link Up (Typically, all nodes are effected on Link Up).
2939 * The unmapped_list will contain all nodes that we have successfully logged
2940 * into at the Fibre Channel level. The mapped_list will contain all nodes
2941 * that are mapped FCP targets.
2942 */
2943 /*
2944 * The bind list is a list of undiscovered (potentially non-existent) nodes
2945 * that we have saved binding information on. This information is used when
2946 * nodes transition from the unmapped to the mapped list.
2947 */
2948 /* For UNUSED_NODE state, the node has just been allocated .
2949 * For PLOGI_ISSUE and REG_LOGIN_ISSUE, the node is on
2950 * the PLOGI list. For REG_LOGIN_COMPL, the node is taken off the PLOGI list
2951 * and put on the unmapped list. For ADISC processing, the node is taken off
2952 * the ADISC list and placed on either the mapped or unmapped list (depending
2953 * on its previous state). Once on the unmapped list, a PRLI is issued and the
2954 * state changed to PRLI_ISSUE. When the PRLI completion occurs, the state is
2955 * changed to UNMAPPED_NODE. If the completion indicates a mapped
2956 * node, the node is taken off the unmapped list. The binding list is checked
2957 * for a valid binding, or a binding is automatically assigned. If binding
2958 * assignment is unsuccessful, the node is left on the unmapped list. If
2959 * binding assignment is successful, the associated binding list entry (if
2960 * any) is removed, and the node is placed on the mapped list.
2961 */
2962 /*
2963 * For a Link Down, all nodes on the ADISC, PLOGI, unmapped or mapped
2964 * lists will receive a DEVICE_RECOVERY event. If the linkdown or devloss timers
2965 * expire, all effected nodes will receive a DEVICE_RM event.
2966 */
2967 /*
2968 * For a Link Up or RSCN, all nodes will move from the mapped / unmapped lists
2969 * to either the ADISC or PLOGI list. After a Nameserver query or ALPA loopmap
2970 * check, additional nodes may be added or removed (via DEVICE_RM) to / from
2971 * the PLOGI or ADISC lists. Once the PLOGI and ADISC lists are populated,
2972 * we will first process the ADISC list. 32 entries are processed initially and
2973 * ADISC is initited for each one. Completions / Events for each node are
2974 * funnelled thru the state machine. As each node finishes ADISC processing, it
2975 * starts ADISC for any nodes waiting for ADISC processing. If no nodes are
2976 * waiting, and the ADISC list count is identically 0, then we are done. For
2977 * Link Up discovery, since all nodes on the PLOGI list are UNREG_LOGIN'ed, we
2978 * can issue a CLEAR_LA and reenable Link Events. Next we will process the PLOGI
2979 * list. 32 entries are processed initially and PLOGI is initited for each one.
2980 * Completions / Events for each node are funnelled thru the state machine. As
2981 * each node finishes PLOGI processing, it starts PLOGI for any nodes waiting
2982 * for PLOGI processing. If no nodes are waiting, and the PLOGI list count is
2983 * indentically 0, then we are done. We have now completed discovery / RSCN
2984 * handling. Upon completion, ALL nodes should be on either the mapped or
2985 * unmapped lists.
2986 */
2987
2988 static uint32_t (*lpfc_disc_action[NLP_STE_MAX_STATE * NLP_EVT_MAX_EVENT])
2989 (struct lpfc_vport *, struct lpfc_nodelist *, void *, uint32_t) = {
2990 /* Action routine Event Current State */
2991 lpfc_rcv_plogi_unused_node, /* RCV_PLOGI UNUSED_NODE */
2992 lpfc_rcv_els_unused_node, /* RCV_PRLI */
2993 lpfc_rcv_logo_unused_node, /* RCV_LOGO */
2994 lpfc_rcv_els_unused_node, /* RCV_ADISC */
2995 lpfc_rcv_els_unused_node, /* RCV_PDISC */
2996 lpfc_rcv_els_unused_node, /* RCV_PRLO */
2997 lpfc_disc_illegal, /* CMPL_PLOGI */
2998 lpfc_disc_illegal, /* CMPL_PRLI */
2999 lpfc_cmpl_logo_unused_node, /* CMPL_LOGO */
3000 lpfc_disc_illegal, /* CMPL_ADISC */
3001 lpfc_disc_illegal, /* CMPL_REG_LOGIN */
3002 lpfc_device_rm_unused_node, /* DEVICE_RM */
3003 lpfc_device_recov_unused_node, /* DEVICE_RECOVERY */
3004
3005 lpfc_rcv_plogi_plogi_issue, /* RCV_PLOGI PLOGI_ISSUE */
3006 lpfc_rcv_prli_plogi_issue, /* RCV_PRLI */
3007 lpfc_rcv_logo_plogi_issue, /* RCV_LOGO */
3008 lpfc_rcv_els_plogi_issue, /* RCV_ADISC */
3009 lpfc_rcv_els_plogi_issue, /* RCV_PDISC */
3010 lpfc_rcv_els_plogi_issue, /* RCV_PRLO */
3011 lpfc_cmpl_plogi_plogi_issue, /* CMPL_PLOGI */
3012 lpfc_disc_illegal, /* CMPL_PRLI */
3013 lpfc_cmpl_logo_plogi_issue, /* CMPL_LOGO */
3014 lpfc_disc_illegal, /* CMPL_ADISC */
3015 lpfc_cmpl_reglogin_plogi_issue,/* CMPL_REG_LOGIN */
3016 lpfc_device_rm_plogi_issue, /* DEVICE_RM */
3017 lpfc_device_recov_plogi_issue, /* DEVICE_RECOVERY */
3018
3019 lpfc_rcv_plogi_adisc_issue, /* RCV_PLOGI ADISC_ISSUE */
3020 lpfc_rcv_prli_adisc_issue, /* RCV_PRLI */
3021 lpfc_rcv_logo_adisc_issue, /* RCV_LOGO */
3022 lpfc_rcv_padisc_adisc_issue, /* RCV_ADISC */
3023 lpfc_rcv_padisc_adisc_issue, /* RCV_PDISC */
3024 lpfc_rcv_prlo_adisc_issue, /* RCV_PRLO */
3025 lpfc_disc_illegal, /* CMPL_PLOGI */
3026 lpfc_disc_illegal, /* CMPL_PRLI */
3027 lpfc_disc_illegal, /* CMPL_LOGO */
3028 lpfc_cmpl_adisc_adisc_issue, /* CMPL_ADISC */
3029 lpfc_disc_illegal, /* CMPL_REG_LOGIN */
3030 lpfc_device_rm_adisc_issue, /* DEVICE_RM */
3031 lpfc_device_recov_adisc_issue, /* DEVICE_RECOVERY */
3032
3033 lpfc_rcv_plogi_reglogin_issue, /* RCV_PLOGI REG_LOGIN_ISSUE */
3034 lpfc_rcv_prli_reglogin_issue, /* RCV_PLOGI */
3035 lpfc_rcv_logo_reglogin_issue, /* RCV_LOGO */
3036 lpfc_rcv_padisc_reglogin_issue, /* RCV_ADISC */
3037 lpfc_rcv_padisc_reglogin_issue, /* RCV_PDISC */
3038 lpfc_rcv_prlo_reglogin_issue, /* RCV_PRLO */
3039 lpfc_cmpl_plogi_illegal, /* CMPL_PLOGI */
3040 lpfc_disc_illegal, /* CMPL_PRLI */
3041 lpfc_disc_illegal, /* CMPL_LOGO */
3042 lpfc_disc_illegal, /* CMPL_ADISC */
3043 lpfc_cmpl_reglogin_reglogin_issue,/* CMPL_REG_LOGIN */
3044 lpfc_device_rm_reglogin_issue, /* DEVICE_RM */
3045 lpfc_device_recov_reglogin_issue,/* DEVICE_RECOVERY */
3046
3047 lpfc_rcv_plogi_prli_issue, /* RCV_PLOGI PRLI_ISSUE */
3048 lpfc_rcv_prli_prli_issue, /* RCV_PRLI */
3049 lpfc_rcv_logo_prli_issue, /* RCV_LOGO */
3050 lpfc_rcv_padisc_prli_issue, /* RCV_ADISC */
3051 lpfc_rcv_padisc_prli_issue, /* RCV_PDISC */
3052 lpfc_rcv_prlo_prli_issue, /* RCV_PRLO */
3053 lpfc_cmpl_plogi_illegal, /* CMPL_PLOGI */
3054 lpfc_cmpl_prli_prli_issue, /* CMPL_PRLI */
3055 lpfc_disc_illegal, /* CMPL_LOGO */
3056 lpfc_disc_illegal, /* CMPL_ADISC */
3057 lpfc_disc_illegal, /* CMPL_REG_LOGIN */
3058 lpfc_device_rm_prli_issue, /* DEVICE_RM */
3059 lpfc_device_recov_prli_issue, /* DEVICE_RECOVERY */
3060
3061 lpfc_rcv_plogi_logo_issue, /* RCV_PLOGI LOGO_ISSUE */
3062 lpfc_rcv_prli_logo_issue, /* RCV_PRLI */
3063 lpfc_rcv_logo_logo_issue, /* RCV_LOGO */
3064 lpfc_rcv_padisc_logo_issue, /* RCV_ADISC */
3065 lpfc_rcv_padisc_logo_issue, /* RCV_PDISC */
3066 lpfc_rcv_prlo_logo_issue, /* RCV_PRLO */
3067 lpfc_cmpl_plogi_illegal, /* CMPL_PLOGI */
3068 lpfc_disc_illegal, /* CMPL_PRLI */
3069 lpfc_cmpl_logo_logo_issue, /* CMPL_LOGO */
3070 lpfc_disc_illegal, /* CMPL_ADISC */
3071 lpfc_disc_illegal, /* CMPL_REG_LOGIN */
3072 lpfc_device_rm_logo_issue, /* DEVICE_RM */
3073 lpfc_device_recov_logo_issue, /* DEVICE_RECOVERY */
3074
3075 lpfc_rcv_plogi_unmap_node, /* RCV_PLOGI UNMAPPED_NODE */
3076 lpfc_rcv_prli_unmap_node, /* RCV_PRLI */
3077 lpfc_rcv_logo_unmap_node, /* RCV_LOGO */
3078 lpfc_rcv_padisc_unmap_node, /* RCV_ADISC */
3079 lpfc_rcv_padisc_unmap_node, /* RCV_PDISC */
3080 lpfc_rcv_prlo_unmap_node, /* RCV_PRLO */
3081 lpfc_disc_illegal, /* CMPL_PLOGI */
3082 lpfc_disc_illegal, /* CMPL_PRLI */
3083 lpfc_disc_illegal, /* CMPL_LOGO */
3084 lpfc_disc_illegal, /* CMPL_ADISC */
3085 lpfc_disc_illegal, /* CMPL_REG_LOGIN */
3086 lpfc_disc_illegal, /* DEVICE_RM */
3087 lpfc_device_recov_unmap_node, /* DEVICE_RECOVERY */
3088
3089 lpfc_rcv_plogi_mapped_node, /* RCV_PLOGI MAPPED_NODE */
3090 lpfc_rcv_prli_mapped_node, /* RCV_PRLI */
3091 lpfc_rcv_logo_mapped_node, /* RCV_LOGO */
3092 lpfc_rcv_padisc_mapped_node, /* RCV_ADISC */
3093 lpfc_rcv_padisc_mapped_node, /* RCV_PDISC */
3094 lpfc_rcv_prlo_mapped_node, /* RCV_PRLO */
3095 lpfc_disc_illegal, /* CMPL_PLOGI */
3096 lpfc_disc_illegal, /* CMPL_PRLI */
3097 lpfc_disc_illegal, /* CMPL_LOGO */
3098 lpfc_disc_illegal, /* CMPL_ADISC */
3099 lpfc_disc_illegal, /* CMPL_REG_LOGIN */
3100 lpfc_disc_illegal, /* DEVICE_RM */
3101 lpfc_device_recov_mapped_node, /* DEVICE_RECOVERY */
3102
3103 lpfc_rcv_plogi_npr_node, /* RCV_PLOGI NPR_NODE */
3104 lpfc_rcv_prli_npr_node, /* RCV_PRLI */
3105 lpfc_rcv_logo_npr_node, /* RCV_LOGO */
3106 lpfc_rcv_padisc_npr_node, /* RCV_ADISC */
3107 lpfc_rcv_padisc_npr_node, /* RCV_PDISC */
3108 lpfc_rcv_prlo_npr_node, /* RCV_PRLO */
3109 lpfc_cmpl_plogi_npr_node, /* CMPL_PLOGI */
3110 lpfc_cmpl_prli_npr_node, /* CMPL_PRLI */
3111 lpfc_cmpl_logo_npr_node, /* CMPL_LOGO */
3112 lpfc_cmpl_adisc_npr_node, /* CMPL_ADISC */
3113 lpfc_cmpl_reglogin_npr_node, /* CMPL_REG_LOGIN */
3114 lpfc_device_rm_npr_node, /* DEVICE_RM */
3115 lpfc_device_recov_npr_node, /* DEVICE_RECOVERY */
3116 };
3117
3118 int
lpfc_disc_state_machine(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)3119 lpfc_disc_state_machine(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
3120 void *arg, uint32_t evt)
3121 {
3122 uint32_t cur_state, rc;
3123 uint32_t(*func) (struct lpfc_vport *, struct lpfc_nodelist *, void *,
3124 uint32_t);
3125 uint32_t got_ndlp = 0;
3126 uint32_t data1;
3127
3128 if (lpfc_nlp_get(ndlp))
3129 got_ndlp = 1;
3130
3131 cur_state = ndlp->nlp_state;
3132
3133 data1 = (((uint32_t)ndlp->nlp_fc4_type << 16) |
3134 ((uint32_t)ndlp->nlp_type));
3135 /* DSM in event <evt> on NPort <nlp_DID> in state <cur_state> */
3136 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
3137 "0211 DSM in event x%x on NPort x%x in "
3138 "state %d rpi x%x Data: x%x x%x\n",
3139 evt, ndlp->nlp_DID, cur_state, ndlp->nlp_rpi,
3140 ndlp->nlp_flag, data1);
3141
3142 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_DSM,
3143 "DSM in: evt:%d ste:%d did:x%x",
3144 evt, cur_state, ndlp->nlp_DID);
3145
3146 func = lpfc_disc_action[(cur_state * NLP_EVT_MAX_EVENT) + evt];
3147 rc = (func) (vport, ndlp, arg, evt);
3148
3149 /* DSM out state <rc> on NPort <nlp_DID> */
3150 if (got_ndlp) {
3151 data1 = (((uint32_t)ndlp->nlp_fc4_type << 16) |
3152 ((uint32_t)ndlp->nlp_type));
3153 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
3154 "0212 DSM out state %d on NPort x%x "
3155 "rpi x%x Data: x%x x%x\n",
3156 rc, ndlp->nlp_DID, ndlp->nlp_rpi, ndlp->nlp_flag,
3157 data1);
3158
3159 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_DSM,
3160 "DSM out: ste:%d did:x%x flg:x%x",
3161 rc, ndlp->nlp_DID, ndlp->nlp_flag);
3162 /* Decrement the ndlp reference count held for this function */
3163 lpfc_nlp_put(ndlp);
3164 } else {
3165 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
3166 "0213 DSM out state %d on NPort free\n", rc);
3167
3168 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_DSM,
3169 "DSM out: ste:%d did:x%x flg:x%x",
3170 rc, 0, 0);
3171 }
3172
3173 return rc;
3174 }
3175