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_FCP_INITIATOR))) ||
907 (ndlp->nlp_state == NLP_STE_ADISC_ISSUE)) {
908 /* Only try to re-login if this is NOT a Fabric Node */
909 mod_timer(&ndlp->nlp_delayfunc,
910 jiffies + msecs_to_jiffies(1000 * 1));
911 spin_lock_irq(shost->host_lock);
912 ndlp->nlp_flag |= NLP_DELAY_TMO;
913 spin_unlock_irq(shost->host_lock);
914
915 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
916 }
917 out:
918 ndlp->nlp_prev_state = ndlp->nlp_state;
919 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
920
921 spin_lock_irq(shost->host_lock);
922 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
923 spin_unlock_irq(shost->host_lock);
924 /* The driver has to wait until the ACC completes before it continues
925 * processing the LOGO. The action will resume in
926 * lpfc_cmpl_els_logo_acc routine. Since part of processing includes an
927 * unreg_login, the driver waits so the ACC does not get aborted.
928 */
929 return 0;
930 }
931
932 static uint32_t
lpfc_rcv_prli_support_check(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,struct lpfc_iocbq * cmdiocb)933 lpfc_rcv_prli_support_check(struct lpfc_vport *vport,
934 struct lpfc_nodelist *ndlp,
935 struct lpfc_iocbq *cmdiocb)
936 {
937 struct ls_rjt stat;
938 uint32_t *payload;
939 uint32_t cmd;
940
941 payload = ((struct lpfc_dmabuf *)cmdiocb->context2)->virt;
942 cmd = *payload;
943 if (vport->phba->nvmet_support) {
944 /* Must be a NVME PRLI */
945 if (cmd == ELS_CMD_PRLI)
946 goto out;
947 } else {
948 /* Initiator mode. */
949 if (!vport->nvmei_support && (cmd == ELS_CMD_NVMEPRLI))
950 goto out;
951 }
952 return 1;
953 out:
954 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NVME_DISC,
955 "6115 Rcv PRLI (%x) check failed: ndlp rpi %d "
956 "state x%x flags x%x\n",
957 cmd, ndlp->nlp_rpi, ndlp->nlp_state,
958 ndlp->nlp_flag);
959 memset(&stat, 0, sizeof(struct ls_rjt));
960 stat.un.b.lsRjtRsnCode = LSRJT_CMD_UNSUPPORTED;
961 stat.un.b.lsRjtRsnCodeExp = LSEXP_REQ_UNSUPPORTED;
962 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb,
963 ndlp, NULL);
964 return 0;
965 }
966
967 static void
lpfc_rcv_prli(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,struct lpfc_iocbq * cmdiocb)968 lpfc_rcv_prli(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
969 struct lpfc_iocbq *cmdiocb)
970 {
971 struct lpfc_hba *phba = vport->phba;
972 struct lpfc_dmabuf *pcmd;
973 uint32_t *lp;
974 PRLI *npr;
975 struct fc_rport *rport = ndlp->rport;
976 u32 roles;
977
978 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
979 lp = (uint32_t *) pcmd->virt;
980 npr = (PRLI *) ((uint8_t *) lp + sizeof (uint32_t));
981
982 if ((npr->prliType == PRLI_FCP_TYPE) ||
983 (npr->prliType == PRLI_NVME_TYPE)) {
984 if (npr->initiatorFunc) {
985 if (npr->prliType == PRLI_FCP_TYPE)
986 ndlp->nlp_type |= NLP_FCP_INITIATOR;
987 if (npr->prliType == PRLI_NVME_TYPE)
988 ndlp->nlp_type |= NLP_NVME_INITIATOR;
989 }
990 if (npr->targetFunc) {
991 if (npr->prliType == PRLI_FCP_TYPE)
992 ndlp->nlp_type |= NLP_FCP_TARGET;
993 if (npr->prliType == PRLI_NVME_TYPE)
994 ndlp->nlp_type |= NLP_NVME_TARGET;
995 if (npr->writeXferRdyDis)
996 ndlp->nlp_flag |= NLP_FIRSTBURST;
997 }
998 if (npr->Retry && ndlp->nlp_type &
999 (NLP_FCP_INITIATOR | NLP_FCP_TARGET))
1000 ndlp->nlp_fcp_info |= NLP_FCP_2_DEVICE;
1001
1002 if (npr->Retry && phba->nsler &&
1003 ndlp->nlp_type & (NLP_NVME_INITIATOR | NLP_NVME_TARGET))
1004 ndlp->nlp_nvme_info |= NLP_NVME_NSLER;
1005
1006
1007 /* If this driver is in nvme target mode, set the ndlp's fc4
1008 * type to NVME provided the PRLI response claims NVME FC4
1009 * type. Target mode does not issue gft_id so doesn't get
1010 * the fc4 type set until now.
1011 */
1012 if (phba->nvmet_support && (npr->prliType == PRLI_NVME_TYPE)) {
1013 ndlp->nlp_fc4_type |= NLP_FC4_NVME;
1014 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1015 }
1016 if (npr->prliType == PRLI_FCP_TYPE)
1017 ndlp->nlp_fc4_type |= NLP_FC4_FCP;
1018 }
1019 if (rport) {
1020 /* We need to update the rport role values */
1021 roles = FC_RPORT_ROLE_UNKNOWN;
1022 if (ndlp->nlp_type & NLP_FCP_INITIATOR)
1023 roles |= FC_RPORT_ROLE_FCP_INITIATOR;
1024 if (ndlp->nlp_type & NLP_FCP_TARGET)
1025 roles |= FC_RPORT_ROLE_FCP_TARGET;
1026
1027 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
1028 "rport rolechg: role:x%x did:x%x flg:x%x",
1029 roles, ndlp->nlp_DID, ndlp->nlp_flag);
1030
1031 if (vport->cfg_enable_fc4_type != LPFC_ENABLE_NVME)
1032 fc_remote_port_rolechg(rport, roles);
1033 }
1034 }
1035
1036 static uint32_t
lpfc_disc_set_adisc(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp)1037 lpfc_disc_set_adisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
1038 {
1039 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1040
1041 if (!(ndlp->nlp_flag & NLP_RPI_REGISTERED)) {
1042 spin_lock_irq(shost->host_lock);
1043 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
1044 spin_unlock_irq(shost->host_lock);
1045 return 0;
1046 }
1047
1048 if (!(vport->fc_flag & FC_PT2PT)) {
1049 /* Check config parameter use-adisc or FCP-2 */
1050 if (vport->cfg_use_adisc && ((vport->fc_flag & FC_RSCN_MODE) ||
1051 ((ndlp->nlp_fcp_info & NLP_FCP_2_DEVICE) &&
1052 (ndlp->nlp_type & NLP_FCP_TARGET)))) {
1053 spin_lock_irq(shost->host_lock);
1054 ndlp->nlp_flag |= NLP_NPR_ADISC;
1055 spin_unlock_irq(shost->host_lock);
1056 return 1;
1057 }
1058 }
1059
1060 spin_lock_irq(shost->host_lock);
1061 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
1062 spin_unlock_irq(shost->host_lock);
1063 lpfc_unreg_rpi(vport, ndlp);
1064 return 0;
1065 }
1066
1067 /**
1068 * lpfc_release_rpi - Release a RPI by issuing unreg_login mailbox cmd.
1069 * @phba : Pointer to lpfc_hba structure.
1070 * @vport: Pointer to lpfc_vport structure.
1071 * @ndlp: Pointer to lpfc_nodelist structure.
1072 * @rpi : rpi to be release.
1073 *
1074 * This function will send a unreg_login mailbox command to the firmware
1075 * to release a rpi.
1076 **/
1077 static void
lpfc_release_rpi(struct lpfc_hba * phba,struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,uint16_t rpi)1078 lpfc_release_rpi(struct lpfc_hba *phba, struct lpfc_vport *vport,
1079 struct lpfc_nodelist *ndlp, uint16_t rpi)
1080 {
1081 LPFC_MBOXQ_t *pmb;
1082 int rc;
1083
1084 /* If there is already an UNREG in progress for this ndlp,
1085 * no need to queue up another one.
1086 */
1087 if (ndlp->nlp_flag & NLP_UNREG_INP) {
1088 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
1089 "1435 release_rpi SKIP UNREG x%x on "
1090 "NPort x%x deferred x%x flg x%x "
1091 "Data: x%px\n",
1092 ndlp->nlp_rpi, ndlp->nlp_DID,
1093 ndlp->nlp_defer_did,
1094 ndlp->nlp_flag, ndlp);
1095 return;
1096 }
1097
1098 pmb = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool,
1099 GFP_KERNEL);
1100 if (!pmb)
1101 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
1102 "2796 mailbox memory allocation failed \n");
1103 else {
1104 lpfc_unreg_login(phba, vport->vpi, rpi, pmb);
1105 pmb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
1106 pmb->vport = vport;
1107 pmb->ctx_ndlp = ndlp;
1108
1109 if (((ndlp->nlp_DID & Fabric_DID_MASK) != Fabric_DID_MASK) &&
1110 (!(vport->fc_flag & FC_OFFLINE_MODE)))
1111 ndlp->nlp_flag |= NLP_UNREG_INP;
1112
1113 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
1114 "1437 release_rpi UNREG x%x "
1115 "on NPort x%x flg x%x\n",
1116 ndlp->nlp_rpi, ndlp->nlp_DID, ndlp->nlp_flag);
1117
1118 rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);
1119 if (rc == MBX_NOT_FINISHED)
1120 mempool_free(pmb, phba->mbox_mem_pool);
1121 }
1122 }
1123
1124 static uint32_t
lpfc_disc_illegal(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1125 lpfc_disc_illegal(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1126 void *arg, uint32_t evt)
1127 {
1128 struct lpfc_hba *phba;
1129 LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg;
1130 uint16_t rpi;
1131
1132 phba = vport->phba;
1133 /* Release the RPI if reglogin completing */
1134 if (!(phba->pport->load_flag & FC_UNLOADING) &&
1135 (evt == NLP_EVT_CMPL_REG_LOGIN) &&
1136 (!pmb->u.mb.mbxStatus)) {
1137 rpi = pmb->u.mb.un.varWords[0];
1138 lpfc_release_rpi(phba, vport, ndlp, rpi);
1139 }
1140 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
1141 "0271 Illegal State Transition: node x%x "
1142 "event x%x, state x%x Data: x%x x%x\n",
1143 ndlp->nlp_DID, evt, ndlp->nlp_state, ndlp->nlp_rpi,
1144 ndlp->nlp_flag);
1145 return ndlp->nlp_state;
1146 }
1147
1148 static uint32_t
lpfc_cmpl_plogi_illegal(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1149 lpfc_cmpl_plogi_illegal(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1150 void *arg, uint32_t evt)
1151 {
1152 /* This transition is only legal if we previously
1153 * rcv'ed a PLOGI. Since we don't want 2 discovery threads
1154 * working on the same NPortID, do nothing for this thread
1155 * to stop it.
1156 */
1157 if (!(ndlp->nlp_flag & NLP_RCV_PLOGI)) {
1158 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
1159 "0272 Illegal State Transition: node x%x "
1160 "event x%x, state x%x Data: x%x x%x\n",
1161 ndlp->nlp_DID, evt, ndlp->nlp_state,
1162 ndlp->nlp_rpi, ndlp->nlp_flag);
1163 }
1164 return ndlp->nlp_state;
1165 }
1166
1167 /* Start of Discovery State Machine routines */
1168
1169 static uint32_t
lpfc_rcv_plogi_unused_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1170 lpfc_rcv_plogi_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1171 void *arg, uint32_t evt)
1172 {
1173 struct lpfc_iocbq *cmdiocb;
1174
1175 cmdiocb = (struct lpfc_iocbq *) arg;
1176
1177 if (lpfc_rcv_plogi(vport, ndlp, cmdiocb)) {
1178 return ndlp->nlp_state;
1179 }
1180 return NLP_STE_FREED_NODE;
1181 }
1182
1183 static uint32_t
lpfc_rcv_els_unused_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1184 lpfc_rcv_els_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1185 void *arg, uint32_t evt)
1186 {
1187 lpfc_issue_els_logo(vport, ndlp, 0);
1188 return ndlp->nlp_state;
1189 }
1190
1191 static uint32_t
lpfc_rcv_logo_unused_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1192 lpfc_rcv_logo_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1193 void *arg, uint32_t evt)
1194 {
1195 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1196 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1197
1198 spin_lock_irq(shost->host_lock);
1199 ndlp->nlp_flag |= NLP_LOGO_ACC;
1200 spin_unlock_irq(shost->host_lock);
1201 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
1202
1203 return ndlp->nlp_state;
1204 }
1205
1206 static uint32_t
lpfc_cmpl_logo_unused_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1207 lpfc_cmpl_logo_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1208 void *arg, uint32_t evt)
1209 {
1210 return NLP_STE_FREED_NODE;
1211 }
1212
1213 static uint32_t
lpfc_device_rm_unused_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1214 lpfc_device_rm_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1215 void *arg, uint32_t evt)
1216 {
1217 return NLP_STE_FREED_NODE;
1218 }
1219
1220 static uint32_t
lpfc_device_recov_unused_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1221 lpfc_device_recov_unused_node(struct lpfc_vport *vport,
1222 struct lpfc_nodelist *ndlp,
1223 void *arg, uint32_t evt)
1224 {
1225 return ndlp->nlp_state;
1226 }
1227
1228 static uint32_t
lpfc_rcv_plogi_plogi_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1229 lpfc_rcv_plogi_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1230 void *arg, uint32_t evt)
1231 {
1232 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1233 struct lpfc_hba *phba = vport->phba;
1234 struct lpfc_iocbq *cmdiocb = arg;
1235 struct lpfc_dmabuf *pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
1236 uint32_t *lp = (uint32_t *) pcmd->virt;
1237 struct serv_parm *sp = (struct serv_parm *) (lp + 1);
1238 struct ls_rjt stat;
1239 int port_cmp;
1240
1241 memset(&stat, 0, sizeof (struct ls_rjt));
1242
1243 /* For a PLOGI, we only accept if our portname is less
1244 * than the remote portname.
1245 */
1246 phba->fc_stat.elsLogiCol++;
1247 port_cmp = memcmp(&vport->fc_portname, &sp->portName,
1248 sizeof(struct lpfc_name));
1249
1250 if (port_cmp >= 0) {
1251 /* Reject this request because the remote node will accept
1252 ours */
1253 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
1254 stat.un.b.lsRjtRsnCodeExp = LSEXP_CMD_IN_PROGRESS;
1255 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
1256 NULL);
1257 } else {
1258 if (lpfc_rcv_plogi(vport, ndlp, cmdiocb) &&
1259 (ndlp->nlp_flag & NLP_NPR_2B_DISC) &&
1260 (vport->num_disc_nodes)) {
1261 spin_lock_irq(shost->host_lock);
1262 ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
1263 spin_unlock_irq(shost->host_lock);
1264 /* Check if there are more PLOGIs to be sent */
1265 lpfc_more_plogi(vport);
1266 if (vport->num_disc_nodes == 0) {
1267 spin_lock_irq(shost->host_lock);
1268 vport->fc_flag &= ~FC_NDISC_ACTIVE;
1269 spin_unlock_irq(shost->host_lock);
1270 lpfc_can_disctmo(vport);
1271 lpfc_end_rscn(vport);
1272 }
1273 }
1274 } /* If our portname was less */
1275
1276 return ndlp->nlp_state;
1277 }
1278
1279 static uint32_t
lpfc_rcv_prli_plogi_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1280 lpfc_rcv_prli_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1281 void *arg, uint32_t evt)
1282 {
1283 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1284 struct ls_rjt stat;
1285
1286 memset(&stat, 0, sizeof (struct ls_rjt));
1287 stat.un.b.lsRjtRsnCode = LSRJT_LOGICAL_BSY;
1288 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
1289 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
1290 return ndlp->nlp_state;
1291 }
1292
1293 static uint32_t
lpfc_rcv_logo_plogi_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1294 lpfc_rcv_logo_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1295 void *arg, uint32_t evt)
1296 {
1297 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1298
1299 /* Retrieve RPI from LOGO IOCB. RPI is used for CMD_ABORT_XRI_CN */
1300 if (vport->phba->sli_rev == LPFC_SLI_REV3)
1301 ndlp->nlp_rpi = cmdiocb->iocb.ulpIoTag;
1302 /* software abort outstanding PLOGI */
1303 lpfc_els_abort(vport->phba, ndlp);
1304
1305 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1306 return ndlp->nlp_state;
1307 }
1308
1309 static uint32_t
lpfc_rcv_els_plogi_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1310 lpfc_rcv_els_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1311 void *arg, uint32_t evt)
1312 {
1313 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1314 struct lpfc_hba *phba = vport->phba;
1315 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1316
1317 /* software abort outstanding PLOGI */
1318 lpfc_els_abort(phba, ndlp);
1319
1320 if (evt == NLP_EVT_RCV_LOGO) {
1321 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
1322 } else {
1323 lpfc_issue_els_logo(vport, ndlp, 0);
1324 }
1325
1326 /* Put ndlp in npr state set plogi timer for 1 sec */
1327 mod_timer(&ndlp->nlp_delayfunc, jiffies + msecs_to_jiffies(1000 * 1));
1328 spin_lock_irq(shost->host_lock);
1329 ndlp->nlp_flag |= NLP_DELAY_TMO;
1330 spin_unlock_irq(shost->host_lock);
1331 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
1332 ndlp->nlp_prev_state = NLP_STE_PLOGI_ISSUE;
1333 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1334
1335 return ndlp->nlp_state;
1336 }
1337
1338 static uint32_t
lpfc_cmpl_plogi_plogi_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1339 lpfc_cmpl_plogi_plogi_issue(struct lpfc_vport *vport,
1340 struct lpfc_nodelist *ndlp,
1341 void *arg,
1342 uint32_t evt)
1343 {
1344 struct lpfc_hba *phba = vport->phba;
1345 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1346 struct lpfc_iocbq *cmdiocb, *rspiocb;
1347 struct lpfc_dmabuf *pcmd, *prsp, *mp;
1348 uint32_t *lp;
1349 uint32_t vid, flag;
1350 IOCB_t *irsp;
1351 struct serv_parm *sp;
1352 uint32_t ed_tov;
1353 LPFC_MBOXQ_t *mbox;
1354 int rc;
1355
1356 cmdiocb = (struct lpfc_iocbq *) arg;
1357 rspiocb = cmdiocb->context_un.rsp_iocb;
1358
1359 if (ndlp->nlp_flag & NLP_ACC_REGLOGIN) {
1360 /* Recovery from PLOGI collision logic */
1361 return ndlp->nlp_state;
1362 }
1363
1364 irsp = &rspiocb->iocb;
1365
1366 if (irsp->ulpStatus)
1367 goto out;
1368
1369 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
1370
1371 prsp = list_get_first(&pcmd->list, struct lpfc_dmabuf, list);
1372 if (!prsp)
1373 goto out;
1374
1375 lp = (uint32_t *) prsp->virt;
1376 sp = (struct serv_parm *) ((uint8_t *) lp + sizeof (uint32_t));
1377
1378 /* Some switches have FDMI servers returning 0 for WWN */
1379 if ((ndlp->nlp_DID != FDMI_DID) &&
1380 (wwn_to_u64(sp->portName.u.wwn) == 0 ||
1381 wwn_to_u64(sp->nodeName.u.wwn) == 0)) {
1382 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
1383 "0142 PLOGI RSP: Invalid WWN.\n");
1384 goto out;
1385 }
1386 if (!lpfc_check_sparm(vport, ndlp, sp, CLASS3, 0))
1387 goto out;
1388 /* PLOGI chkparm OK */
1389 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
1390 "0121 PLOGI chkparm OK Data: x%x x%x x%x x%x\n",
1391 ndlp->nlp_DID, ndlp->nlp_state,
1392 ndlp->nlp_flag, ndlp->nlp_rpi);
1393 if (vport->cfg_fcp_class == 2 && (sp->cls2.classValid))
1394 ndlp->nlp_fcp_info |= CLASS2;
1395 else
1396 ndlp->nlp_fcp_info |= CLASS3;
1397
1398 ndlp->nlp_class_sup = 0;
1399 if (sp->cls1.classValid)
1400 ndlp->nlp_class_sup |= FC_COS_CLASS1;
1401 if (sp->cls2.classValid)
1402 ndlp->nlp_class_sup |= FC_COS_CLASS2;
1403 if (sp->cls3.classValid)
1404 ndlp->nlp_class_sup |= FC_COS_CLASS3;
1405 if (sp->cls4.classValid)
1406 ndlp->nlp_class_sup |= FC_COS_CLASS4;
1407 ndlp->nlp_maxframe =
1408 ((sp->cmn.bbRcvSizeMsb & 0x0F) << 8) | sp->cmn.bbRcvSizeLsb;
1409
1410 if ((vport->fc_flag & FC_PT2PT) &&
1411 (vport->fc_flag & FC_PT2PT_PLOGI)) {
1412 ed_tov = be32_to_cpu(sp->cmn.e_d_tov);
1413 if (sp->cmn.edtovResolution) {
1414 /* E_D_TOV ticks are in nanoseconds */
1415 ed_tov = (phba->fc_edtov + 999999) / 1000000;
1416 }
1417
1418 ndlp->nlp_flag &= ~NLP_SUPPRESS_RSP;
1419 if ((phba->sli.sli_flag & LPFC_SLI_SUPPRESS_RSP) &&
1420 sp->cmn.valid_vendor_ver_level) {
1421 vid = be32_to_cpu(sp->un.vv.vid);
1422 flag = be32_to_cpu(sp->un.vv.flags);
1423 if ((vid == LPFC_VV_EMLX_ID) &&
1424 (flag & LPFC_VV_SUPPRESS_RSP))
1425 ndlp->nlp_flag |= NLP_SUPPRESS_RSP;
1426 }
1427
1428 /*
1429 * Use the larger EDTOV
1430 * RATOV = 2 * EDTOV for pt-to-pt
1431 */
1432 if (ed_tov > phba->fc_edtov)
1433 phba->fc_edtov = ed_tov;
1434 phba->fc_ratov = (2 * phba->fc_edtov) / 1000;
1435
1436 memcpy(&phba->fc_fabparam, sp, sizeof(struct serv_parm));
1437
1438 /* Issue config_link / reg_vfi to account for updated TOV's */
1439 if (phba->sli_rev == LPFC_SLI_REV4) {
1440 lpfc_issue_reg_vfi(vport);
1441 } else {
1442 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1443 if (!mbox) {
1444 lpfc_printf_vlog(vport, KERN_ERR,
1445 LOG_TRACE_EVENT,
1446 "0133 PLOGI: no memory "
1447 "for config_link "
1448 "Data: x%x x%x x%x x%x\n",
1449 ndlp->nlp_DID, ndlp->nlp_state,
1450 ndlp->nlp_flag, ndlp->nlp_rpi);
1451 goto out;
1452 }
1453
1454 lpfc_config_link(phba, mbox);
1455
1456 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
1457 mbox->vport = vport;
1458 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
1459 if (rc == MBX_NOT_FINISHED) {
1460 mempool_free(mbox, phba->mbox_mem_pool);
1461 goto out;
1462 }
1463 }
1464 }
1465
1466 lpfc_unreg_rpi(vport, ndlp);
1467
1468 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1469 if (!mbox) {
1470 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
1471 "0018 PLOGI: no memory for reg_login "
1472 "Data: x%x x%x x%x x%x\n",
1473 ndlp->nlp_DID, ndlp->nlp_state,
1474 ndlp->nlp_flag, ndlp->nlp_rpi);
1475 goto out;
1476 }
1477
1478 if (lpfc_reg_rpi(phba, vport->vpi, irsp->un.elsreq64.remoteID,
1479 (uint8_t *) sp, mbox, ndlp->nlp_rpi) == 0) {
1480 switch (ndlp->nlp_DID) {
1481 case NameServer_DID:
1482 mbox->mbox_cmpl = lpfc_mbx_cmpl_ns_reg_login;
1483 break;
1484 case FDMI_DID:
1485 mbox->mbox_cmpl = lpfc_mbx_cmpl_fdmi_reg_login;
1486 break;
1487 default:
1488 ndlp->nlp_flag |= NLP_REG_LOGIN_SEND;
1489 mbox->mbox_cmpl = lpfc_mbx_cmpl_reg_login;
1490 }
1491 mbox->ctx_ndlp = lpfc_nlp_get(ndlp);
1492 mbox->vport = vport;
1493 if (lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT)
1494 != MBX_NOT_FINISHED) {
1495 lpfc_nlp_set_state(vport, ndlp,
1496 NLP_STE_REG_LOGIN_ISSUE);
1497 return ndlp->nlp_state;
1498 }
1499 if (ndlp->nlp_flag & NLP_REG_LOGIN_SEND)
1500 ndlp->nlp_flag &= ~NLP_REG_LOGIN_SEND;
1501 /* decrement node reference count to the failed mbox
1502 * command
1503 */
1504 lpfc_nlp_put(ndlp);
1505 mp = (struct lpfc_dmabuf *)mbox->ctx_buf;
1506 lpfc_mbuf_free(phba, mp->virt, mp->phys);
1507 kfree(mp);
1508 mempool_free(mbox, phba->mbox_mem_pool);
1509
1510 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
1511 "0134 PLOGI: cannot issue reg_login "
1512 "Data: x%x x%x x%x x%x\n",
1513 ndlp->nlp_DID, ndlp->nlp_state,
1514 ndlp->nlp_flag, ndlp->nlp_rpi);
1515 } else {
1516 mempool_free(mbox, phba->mbox_mem_pool);
1517
1518 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
1519 "0135 PLOGI: cannot format reg_login "
1520 "Data: x%x x%x x%x x%x\n",
1521 ndlp->nlp_DID, ndlp->nlp_state,
1522 ndlp->nlp_flag, ndlp->nlp_rpi);
1523 }
1524
1525
1526 out:
1527 if (ndlp->nlp_DID == NameServer_DID) {
1528 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
1529 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
1530 "0261 Cannot Register NameServer login\n");
1531 }
1532
1533 /*
1534 ** In case the node reference counter does not go to zero, ensure that
1535 ** the stale state for the node is not processed.
1536 */
1537
1538 ndlp->nlp_prev_state = ndlp->nlp_state;
1539 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1540 spin_lock_irq(shost->host_lock);
1541 ndlp->nlp_flag |= NLP_DEFER_RM;
1542 spin_unlock_irq(shost->host_lock);
1543 return NLP_STE_FREED_NODE;
1544 }
1545
1546 static uint32_t
lpfc_cmpl_logo_plogi_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1547 lpfc_cmpl_logo_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1548 void *arg, uint32_t evt)
1549 {
1550 return ndlp->nlp_state;
1551 }
1552
1553 static uint32_t
lpfc_cmpl_reglogin_plogi_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1554 lpfc_cmpl_reglogin_plogi_issue(struct lpfc_vport *vport,
1555 struct lpfc_nodelist *ndlp, void *arg, uint32_t evt)
1556 {
1557 struct lpfc_hba *phba;
1558 LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg;
1559 MAILBOX_t *mb = &pmb->u.mb;
1560 uint16_t rpi;
1561
1562 phba = vport->phba;
1563 /* Release the RPI */
1564 if (!(phba->pport->load_flag & FC_UNLOADING) &&
1565 !mb->mbxStatus) {
1566 rpi = pmb->u.mb.un.varWords[0];
1567 lpfc_release_rpi(phba, vport, ndlp, rpi);
1568 }
1569 return ndlp->nlp_state;
1570 }
1571
1572 static uint32_t
lpfc_device_rm_plogi_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1573 lpfc_device_rm_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1574 void *arg, uint32_t evt)
1575 {
1576 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1577
1578 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1579 spin_lock_irq(shost->host_lock);
1580 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1581 spin_unlock_irq(shost->host_lock);
1582 return ndlp->nlp_state;
1583 } else {
1584 /* software abort outstanding PLOGI */
1585 lpfc_els_abort(vport->phba, ndlp);
1586
1587 lpfc_drop_node(vport, ndlp);
1588 return NLP_STE_FREED_NODE;
1589 }
1590 }
1591
1592 static uint32_t
lpfc_device_recov_plogi_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1593 lpfc_device_recov_plogi_issue(struct lpfc_vport *vport,
1594 struct lpfc_nodelist *ndlp,
1595 void *arg,
1596 uint32_t evt)
1597 {
1598 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1599 struct lpfc_hba *phba = vport->phba;
1600
1601 /* Don't do anything that will mess up processing of the
1602 * previous RSCN.
1603 */
1604 if (vport->fc_flag & FC_RSCN_DEFERRED)
1605 return ndlp->nlp_state;
1606
1607 /* software abort outstanding PLOGI */
1608 lpfc_els_abort(phba, ndlp);
1609
1610 ndlp->nlp_prev_state = NLP_STE_PLOGI_ISSUE;
1611 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1612 spin_lock_irq(shost->host_lock);
1613 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1614 spin_unlock_irq(shost->host_lock);
1615
1616 return ndlp->nlp_state;
1617 }
1618
1619 static uint32_t
lpfc_rcv_plogi_adisc_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1620 lpfc_rcv_plogi_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1621 void *arg, uint32_t evt)
1622 {
1623 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1624 struct lpfc_hba *phba = vport->phba;
1625 struct lpfc_iocbq *cmdiocb;
1626
1627 /* software abort outstanding ADISC */
1628 lpfc_els_abort(phba, ndlp);
1629
1630 cmdiocb = (struct lpfc_iocbq *) arg;
1631
1632 if (lpfc_rcv_plogi(vport, ndlp, cmdiocb)) {
1633 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1634 spin_lock_irq(shost->host_lock);
1635 ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
1636 spin_unlock_irq(shost->host_lock);
1637 if (vport->num_disc_nodes)
1638 lpfc_more_adisc(vport);
1639 }
1640 return ndlp->nlp_state;
1641 }
1642 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1643 lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
1644 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
1645
1646 return ndlp->nlp_state;
1647 }
1648
1649 static uint32_t
lpfc_rcv_prli_adisc_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1650 lpfc_rcv_prli_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1651 void *arg, uint32_t evt)
1652 {
1653 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1654
1655 if (lpfc_rcv_prli_support_check(vport, ndlp, cmdiocb))
1656 lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1657 return ndlp->nlp_state;
1658 }
1659
1660 static uint32_t
lpfc_rcv_logo_adisc_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1661 lpfc_rcv_logo_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1662 void *arg, uint32_t evt)
1663 {
1664 struct lpfc_hba *phba = vport->phba;
1665 struct lpfc_iocbq *cmdiocb;
1666
1667 cmdiocb = (struct lpfc_iocbq *) arg;
1668
1669 /* software abort outstanding ADISC */
1670 lpfc_els_abort(phba, ndlp);
1671
1672 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1673 return ndlp->nlp_state;
1674 }
1675
1676 static uint32_t
lpfc_rcv_padisc_adisc_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1677 lpfc_rcv_padisc_adisc_issue(struct lpfc_vport *vport,
1678 struct lpfc_nodelist *ndlp,
1679 void *arg, uint32_t evt)
1680 {
1681 struct lpfc_iocbq *cmdiocb;
1682
1683 cmdiocb = (struct lpfc_iocbq *) arg;
1684
1685 lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1686 return ndlp->nlp_state;
1687 }
1688
1689 static uint32_t
lpfc_rcv_prlo_adisc_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1690 lpfc_rcv_prlo_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1691 void *arg, uint32_t evt)
1692 {
1693 struct lpfc_iocbq *cmdiocb;
1694
1695 cmdiocb = (struct lpfc_iocbq *) arg;
1696
1697 /* Treat like rcv logo */
1698 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_PRLO);
1699 return ndlp->nlp_state;
1700 }
1701
1702 static uint32_t
lpfc_cmpl_adisc_adisc_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1703 lpfc_cmpl_adisc_adisc_issue(struct lpfc_vport *vport,
1704 struct lpfc_nodelist *ndlp,
1705 void *arg, uint32_t evt)
1706 {
1707 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1708 struct lpfc_hba *phba = vport->phba;
1709 struct lpfc_iocbq *cmdiocb, *rspiocb;
1710 IOCB_t *irsp;
1711 ADISC *ap;
1712 int rc;
1713
1714 cmdiocb = (struct lpfc_iocbq *) arg;
1715 rspiocb = cmdiocb->context_un.rsp_iocb;
1716
1717 ap = (ADISC *)lpfc_check_elscmpl_iocb(phba, cmdiocb, rspiocb);
1718 irsp = &rspiocb->iocb;
1719
1720 if ((irsp->ulpStatus) ||
1721 (!lpfc_check_adisc(vport, ndlp, &ap->nodeName, &ap->portName))) {
1722 /* 1 sec timeout */
1723 mod_timer(&ndlp->nlp_delayfunc,
1724 jiffies + msecs_to_jiffies(1000));
1725 spin_lock_irq(shost->host_lock);
1726 ndlp->nlp_flag |= NLP_DELAY_TMO;
1727 spin_unlock_irq(shost->host_lock);
1728 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
1729
1730 memset(&ndlp->nlp_nodename, 0, sizeof(struct lpfc_name));
1731 memset(&ndlp->nlp_portname, 0, sizeof(struct lpfc_name));
1732
1733 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1734 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1735 lpfc_unreg_rpi(vport, ndlp);
1736 return ndlp->nlp_state;
1737 }
1738
1739 if (phba->sli_rev == LPFC_SLI_REV4) {
1740 rc = lpfc_sli4_resume_rpi(ndlp, NULL, NULL);
1741 if (rc) {
1742 /* Stay in state and retry. */
1743 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1744 return ndlp->nlp_state;
1745 }
1746 }
1747
1748 if (ndlp->nlp_type & NLP_FCP_TARGET)
1749 ndlp->nlp_fc4_type |= NLP_FC4_FCP;
1750
1751 if (ndlp->nlp_type & NLP_NVME_TARGET)
1752 ndlp->nlp_fc4_type |= NLP_FC4_NVME;
1753
1754 if (ndlp->nlp_type & (NLP_FCP_TARGET | NLP_NVME_TARGET)) {
1755 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1756 lpfc_nlp_set_state(vport, ndlp, NLP_STE_MAPPED_NODE);
1757 } else {
1758 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1759 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1760 }
1761
1762 return ndlp->nlp_state;
1763 }
1764
1765 static uint32_t
lpfc_device_rm_adisc_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1766 lpfc_device_rm_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1767 void *arg, uint32_t evt)
1768 {
1769 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1770
1771 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1772 spin_lock_irq(shost->host_lock);
1773 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1774 spin_unlock_irq(shost->host_lock);
1775 return ndlp->nlp_state;
1776 } else {
1777 /* software abort outstanding ADISC */
1778 lpfc_els_abort(vport->phba, ndlp);
1779
1780 lpfc_drop_node(vport, ndlp);
1781 return NLP_STE_FREED_NODE;
1782 }
1783 }
1784
1785 static uint32_t
lpfc_device_recov_adisc_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1786 lpfc_device_recov_adisc_issue(struct lpfc_vport *vport,
1787 struct lpfc_nodelist *ndlp,
1788 void *arg,
1789 uint32_t evt)
1790 {
1791 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1792 struct lpfc_hba *phba = vport->phba;
1793
1794 /* Don't do anything that will mess up processing of the
1795 * previous RSCN.
1796 */
1797 if (vport->fc_flag & FC_RSCN_DEFERRED)
1798 return ndlp->nlp_state;
1799
1800 /* software abort outstanding ADISC */
1801 lpfc_els_abort(phba, ndlp);
1802
1803 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1804 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1805 spin_lock_irq(shost->host_lock);
1806 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1807 spin_unlock_irq(shost->host_lock);
1808 lpfc_disc_set_adisc(vport, ndlp);
1809 return ndlp->nlp_state;
1810 }
1811
1812 static uint32_t
lpfc_rcv_plogi_reglogin_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1813 lpfc_rcv_plogi_reglogin_issue(struct lpfc_vport *vport,
1814 struct lpfc_nodelist *ndlp,
1815 void *arg,
1816 uint32_t evt)
1817 {
1818 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1819
1820 lpfc_rcv_plogi(vport, ndlp, cmdiocb);
1821 return ndlp->nlp_state;
1822 }
1823
1824 static uint32_t
lpfc_rcv_prli_reglogin_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1825 lpfc_rcv_prli_reglogin_issue(struct lpfc_vport *vport,
1826 struct lpfc_nodelist *ndlp,
1827 void *arg,
1828 uint32_t evt)
1829 {
1830 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1831 struct ls_rjt stat;
1832
1833 if (!lpfc_rcv_prli_support_check(vport, ndlp, cmdiocb)) {
1834 return ndlp->nlp_state;
1835 }
1836 if (vport->phba->nvmet_support) {
1837 /* NVME Target mode. Handle and respond to the PRLI and
1838 * transition to UNMAPPED provided the RPI has completed
1839 * registration.
1840 */
1841 if (ndlp->nlp_flag & NLP_RPI_REGISTERED) {
1842 lpfc_rcv_prli(vport, ndlp, cmdiocb);
1843 lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1844 } else {
1845 /* RPI registration has not completed. Reject the PRLI
1846 * to prevent an illegal state transition when the
1847 * rpi registration does complete.
1848 */
1849 memset(&stat, 0, sizeof(struct ls_rjt));
1850 stat.un.b.lsRjtRsnCode = LSRJT_LOGICAL_BSY;
1851 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
1852 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb,
1853 ndlp, NULL);
1854 return ndlp->nlp_state;
1855 }
1856 } else {
1857 /* Initiator mode. */
1858 lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1859 }
1860 return ndlp->nlp_state;
1861 }
1862
1863 static uint32_t
lpfc_rcv_logo_reglogin_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1864 lpfc_rcv_logo_reglogin_issue(struct lpfc_vport *vport,
1865 struct lpfc_nodelist *ndlp,
1866 void *arg,
1867 uint32_t evt)
1868 {
1869 struct lpfc_hba *phba = vport->phba;
1870 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1871 LPFC_MBOXQ_t *mb;
1872 LPFC_MBOXQ_t *nextmb;
1873 struct lpfc_dmabuf *mp;
1874 struct lpfc_nodelist *ns_ndlp;
1875
1876 cmdiocb = (struct lpfc_iocbq *) arg;
1877
1878 /* cleanup any ndlp on mbox q waiting for reglogin cmpl */
1879 if ((mb = phba->sli.mbox_active)) {
1880 if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) &&
1881 (ndlp == (struct lpfc_nodelist *)mb->ctx_ndlp)) {
1882 ndlp->nlp_flag &= ~NLP_REG_LOGIN_SEND;
1883 lpfc_nlp_put(ndlp);
1884 mb->ctx_ndlp = NULL;
1885 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
1886 }
1887 }
1888
1889 spin_lock_irq(&phba->hbalock);
1890 list_for_each_entry_safe(mb, nextmb, &phba->sli.mboxq, list) {
1891 if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) &&
1892 (ndlp == (struct lpfc_nodelist *)mb->ctx_ndlp)) {
1893 mp = (struct lpfc_dmabuf *)(mb->ctx_buf);
1894 if (mp) {
1895 __lpfc_mbuf_free(phba, mp->virt, mp->phys);
1896 kfree(mp);
1897 }
1898 ndlp->nlp_flag &= ~NLP_REG_LOGIN_SEND;
1899 lpfc_nlp_put(ndlp);
1900 list_del(&mb->list);
1901 phba->sli.mboxq_cnt--;
1902 mempool_free(mb, phba->mbox_mem_pool);
1903 }
1904 }
1905 spin_unlock_irq(&phba->hbalock);
1906
1907 /* software abort if any GID_FT is outstanding */
1908 if (vport->cfg_enable_fc4_type != LPFC_ENABLE_FCP) {
1909 ns_ndlp = lpfc_findnode_did(vport, NameServer_DID);
1910 if (ns_ndlp && NLP_CHK_NODE_ACT(ns_ndlp))
1911 lpfc_els_abort(phba, ns_ndlp);
1912 }
1913
1914 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1915 return ndlp->nlp_state;
1916 }
1917
1918 static uint32_t
lpfc_rcv_padisc_reglogin_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1919 lpfc_rcv_padisc_reglogin_issue(struct lpfc_vport *vport,
1920 struct lpfc_nodelist *ndlp,
1921 void *arg,
1922 uint32_t evt)
1923 {
1924 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1925
1926 lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1927 return ndlp->nlp_state;
1928 }
1929
1930 static uint32_t
lpfc_rcv_prlo_reglogin_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1931 lpfc_rcv_prlo_reglogin_issue(struct lpfc_vport *vport,
1932 struct lpfc_nodelist *ndlp,
1933 void *arg,
1934 uint32_t evt)
1935 {
1936 struct lpfc_iocbq *cmdiocb;
1937
1938 cmdiocb = (struct lpfc_iocbq *) arg;
1939 lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
1940 return ndlp->nlp_state;
1941 }
1942
1943 static uint32_t
lpfc_cmpl_reglogin_reglogin_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1944 lpfc_cmpl_reglogin_reglogin_issue(struct lpfc_vport *vport,
1945 struct lpfc_nodelist *ndlp,
1946 void *arg,
1947 uint32_t evt)
1948 {
1949 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1950 struct lpfc_hba *phba = vport->phba;
1951 LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg;
1952 MAILBOX_t *mb = &pmb->u.mb;
1953 uint32_t did = mb->un.varWords[1];
1954
1955 if (mb->mbxStatus) {
1956 /* RegLogin failed */
1957 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
1958 "0246 RegLogin failed Data: x%x x%x x%x x%x "
1959 "x%x\n",
1960 did, mb->mbxStatus, vport->port_state,
1961 mb->un.varRegLogin.vpi,
1962 mb->un.varRegLogin.rpi);
1963 /*
1964 * If RegLogin failed due to lack of HBA resources do not
1965 * retry discovery.
1966 */
1967 if (mb->mbxStatus == MBXERR_RPI_FULL) {
1968 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1969 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1970 return ndlp->nlp_state;
1971 }
1972
1973 /* Put ndlp in npr state set plogi timer for 1 sec */
1974 mod_timer(&ndlp->nlp_delayfunc,
1975 jiffies + msecs_to_jiffies(1000 * 1));
1976 spin_lock_irq(shost->host_lock);
1977 ndlp->nlp_flag |= NLP_DELAY_TMO;
1978 spin_unlock_irq(shost->host_lock);
1979 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
1980
1981 lpfc_issue_els_logo(vport, ndlp, 0);
1982 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1983 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1984 return ndlp->nlp_state;
1985 }
1986
1987 /* SLI4 ports have preallocated logical rpis. */
1988 if (phba->sli_rev < LPFC_SLI_REV4)
1989 ndlp->nlp_rpi = mb->un.varWords[0];
1990
1991 ndlp->nlp_flag |= NLP_RPI_REGISTERED;
1992
1993 /* Only if we are not a fabric nport do we issue PRLI */
1994 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
1995 "3066 RegLogin Complete on x%x x%x x%x\n",
1996 did, ndlp->nlp_type, ndlp->nlp_fc4_type);
1997 if (!(ndlp->nlp_type & NLP_FABRIC) &&
1998 (phba->nvmet_support == 0)) {
1999 /* The driver supports FCP and NVME concurrently. If the
2000 * ndlp's nlp_fc4_type is still zero, the driver doesn't
2001 * know what PRLI to send yet. Figure that out now and
2002 * call PRLI depending on the outcome.
2003 */
2004 if (vport->fc_flag & FC_PT2PT) {
2005 /* If we are pt2pt, there is no Fabric to determine
2006 * the FC4 type of the remote nport. So if NVME
2007 * is configured try it.
2008 */
2009 ndlp->nlp_fc4_type |= NLP_FC4_FCP;
2010 if ((vport->cfg_enable_fc4_type == LPFC_ENABLE_BOTH) ||
2011 (vport->cfg_enable_fc4_type == LPFC_ENABLE_NVME)) {
2012 ndlp->nlp_fc4_type |= NLP_FC4_NVME;
2013 /* We need to update the localport also */
2014 lpfc_nvme_update_localport(vport);
2015 }
2016
2017 } else if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
2018 ndlp->nlp_fc4_type |= NLP_FC4_FCP;
2019
2020 } else if (ndlp->nlp_fc4_type == 0) {
2021 /* If we are only configured for FCP, the driver
2022 * should just issue PRLI for FCP. Otherwise issue
2023 * GFT_ID to determine if remote port supports NVME.
2024 */
2025 if (vport->cfg_enable_fc4_type != LPFC_ENABLE_FCP) {
2026 lpfc_ns_cmd(vport, SLI_CTNS_GFT_ID, 0,
2027 ndlp->nlp_DID);
2028 return ndlp->nlp_state;
2029 }
2030 ndlp->nlp_fc4_type = NLP_FC4_FCP;
2031 }
2032
2033 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
2034 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PRLI_ISSUE);
2035 if (lpfc_issue_els_prli(vport, ndlp, 0)) {
2036 lpfc_issue_els_logo(vport, ndlp, 0);
2037 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
2038 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
2039 }
2040 } else {
2041 if ((vport->fc_flag & FC_PT2PT) && phba->nvmet_support)
2042 phba->targetport->port_id = vport->fc_myDID;
2043
2044 /* Only Fabric ports should transition. NVME target
2045 * must complete PRLI.
2046 */
2047 if (ndlp->nlp_type & NLP_FABRIC) {
2048 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
2049 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
2050 }
2051 }
2052 return ndlp->nlp_state;
2053 }
2054
2055 static uint32_t
lpfc_device_rm_reglogin_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2056 lpfc_device_rm_reglogin_issue(struct lpfc_vport *vport,
2057 struct lpfc_nodelist *ndlp,
2058 void *arg,
2059 uint32_t evt)
2060 {
2061 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2062
2063 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
2064 spin_lock_irq(shost->host_lock);
2065 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
2066 spin_unlock_irq(shost->host_lock);
2067 return ndlp->nlp_state;
2068 } else {
2069 lpfc_drop_node(vport, ndlp);
2070 return NLP_STE_FREED_NODE;
2071 }
2072 }
2073
2074 static uint32_t
lpfc_device_recov_reglogin_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2075 lpfc_device_recov_reglogin_issue(struct lpfc_vport *vport,
2076 struct lpfc_nodelist *ndlp,
2077 void *arg,
2078 uint32_t evt)
2079 {
2080 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2081
2082 /* Don't do anything that will mess up processing of the
2083 * previous RSCN.
2084 */
2085 if (vport->fc_flag & FC_RSCN_DEFERRED)
2086 return ndlp->nlp_state;
2087
2088 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
2089 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
2090 spin_lock_irq(shost->host_lock);
2091
2092 /* If we are a target we won't immediately transition into PRLI,
2093 * so if REG_LOGIN already completed we don't need to ignore it.
2094 */
2095 if (!(ndlp->nlp_flag & NLP_RPI_REGISTERED) ||
2096 !vport->phba->nvmet_support)
2097 ndlp->nlp_flag |= NLP_IGNR_REG_CMPL;
2098
2099 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
2100 spin_unlock_irq(shost->host_lock);
2101 lpfc_disc_set_adisc(vport, ndlp);
2102 return ndlp->nlp_state;
2103 }
2104
2105 static uint32_t
lpfc_rcv_plogi_prli_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2106 lpfc_rcv_plogi_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2107 void *arg, uint32_t evt)
2108 {
2109 struct lpfc_iocbq *cmdiocb;
2110
2111 cmdiocb = (struct lpfc_iocbq *) arg;
2112
2113 lpfc_rcv_plogi(vport, ndlp, cmdiocb);
2114 return ndlp->nlp_state;
2115 }
2116
2117 static uint32_t
lpfc_rcv_prli_prli_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2118 lpfc_rcv_prli_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2119 void *arg, uint32_t evt)
2120 {
2121 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2122
2123 if (!lpfc_rcv_prli_support_check(vport, ndlp, cmdiocb))
2124 return ndlp->nlp_state;
2125 lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
2126 return ndlp->nlp_state;
2127 }
2128
2129 static uint32_t
lpfc_rcv_logo_prli_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2130 lpfc_rcv_logo_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2131 void *arg, uint32_t evt)
2132 {
2133 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2134
2135 /* Software abort outstanding PRLI before sending acc */
2136 lpfc_els_abort(vport->phba, ndlp);
2137
2138 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
2139 return ndlp->nlp_state;
2140 }
2141
2142 static uint32_t
lpfc_rcv_padisc_prli_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2143 lpfc_rcv_padisc_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2144 void *arg, uint32_t evt)
2145 {
2146 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2147
2148 lpfc_rcv_padisc(vport, ndlp, cmdiocb);
2149 return ndlp->nlp_state;
2150 }
2151
2152 /* This routine is envoked when we rcv a PRLO request from a nport
2153 * we are logged into. We should send back a PRLO rsp setting the
2154 * appropriate bits.
2155 * NEXT STATE = PRLI_ISSUE
2156 */
2157 static uint32_t
lpfc_rcv_prlo_prli_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2158 lpfc_rcv_prlo_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2159 void *arg, uint32_t evt)
2160 {
2161 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2162
2163 lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
2164 return ndlp->nlp_state;
2165 }
2166
2167 static uint32_t
lpfc_cmpl_prli_prli_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2168 lpfc_cmpl_prli_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2169 void *arg, uint32_t evt)
2170 {
2171 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2172 struct lpfc_iocbq *cmdiocb, *rspiocb;
2173 struct lpfc_hba *phba = vport->phba;
2174 IOCB_t *irsp;
2175 PRLI *npr;
2176 struct lpfc_nvme_prli *nvpr;
2177 void *temp_ptr;
2178
2179 cmdiocb = (struct lpfc_iocbq *) arg;
2180 rspiocb = cmdiocb->context_un.rsp_iocb;
2181
2182 /* A solicited PRLI is either FCP or NVME. The PRLI cmd/rsp
2183 * format is different so NULL the two PRLI types so that the
2184 * driver correctly gets the correct context.
2185 */
2186 npr = NULL;
2187 nvpr = NULL;
2188 temp_ptr = lpfc_check_elscmpl_iocb(phba, cmdiocb, rspiocb);
2189 if (cmdiocb->iocb_flag & LPFC_PRLI_FCP_REQ)
2190 npr = (PRLI *) temp_ptr;
2191 else if (cmdiocb->iocb_flag & LPFC_PRLI_NVME_REQ)
2192 nvpr = (struct lpfc_nvme_prli *) temp_ptr;
2193
2194 irsp = &rspiocb->iocb;
2195 if (irsp->ulpStatus) {
2196 if ((vport->port_type == LPFC_NPIV_PORT) &&
2197 vport->cfg_restrict_login) {
2198 goto out;
2199 }
2200
2201 /* Adjust the nlp_type accordingly if the PRLI failed */
2202 if (npr)
2203 ndlp->nlp_fc4_type &= ~NLP_FC4_FCP;
2204 if (nvpr)
2205 ndlp->nlp_fc4_type &= ~NLP_FC4_NVME;
2206
2207 /* We can't set the DSM state till BOTH PRLIs complete */
2208 goto out_err;
2209 }
2210
2211 if (npr && (npr->acceptRspCode == PRLI_REQ_EXECUTED) &&
2212 (npr->prliType == PRLI_FCP_TYPE)) {
2213 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_DISC,
2214 "6028 FCP NPR PRLI Cmpl Init %d Target %d\n",
2215 npr->initiatorFunc,
2216 npr->targetFunc);
2217 if (npr->initiatorFunc)
2218 ndlp->nlp_type |= NLP_FCP_INITIATOR;
2219 if (npr->targetFunc) {
2220 ndlp->nlp_type |= NLP_FCP_TARGET;
2221 if (npr->writeXferRdyDis)
2222 ndlp->nlp_flag |= NLP_FIRSTBURST;
2223 }
2224 if (npr->Retry)
2225 ndlp->nlp_fcp_info |= NLP_FCP_2_DEVICE;
2226
2227 } else if (nvpr &&
2228 (bf_get_be32(prli_acc_rsp_code, nvpr) ==
2229 PRLI_REQ_EXECUTED) &&
2230 (bf_get_be32(prli_type_code, nvpr) ==
2231 PRLI_NVME_TYPE)) {
2232
2233 /* Complete setting up the remote ndlp personality. */
2234 if (bf_get_be32(prli_init, nvpr))
2235 ndlp->nlp_type |= NLP_NVME_INITIATOR;
2236
2237 if (phba->nsler && bf_get_be32(prli_nsler, nvpr) &&
2238 bf_get_be32(prli_conf, nvpr))
2239
2240 ndlp->nlp_nvme_info |= NLP_NVME_NSLER;
2241 else
2242 ndlp->nlp_nvme_info &= ~NLP_NVME_NSLER;
2243
2244 /* Target driver cannot solicit NVME FB. */
2245 if (bf_get_be32(prli_tgt, nvpr)) {
2246 /* Complete the nvme target roles. The transport
2247 * needs to know if the rport is capable of
2248 * discovery in addition to its role.
2249 */
2250 ndlp->nlp_type |= NLP_NVME_TARGET;
2251 if (bf_get_be32(prli_disc, nvpr))
2252 ndlp->nlp_type |= NLP_NVME_DISCOVERY;
2253
2254 /*
2255 * If prli_fba is set, the Target supports FirstBurst.
2256 * If prli_fb_sz is 0, the FirstBurst size is unlimited,
2257 * otherwise it defines the actual size supported by
2258 * the NVME Target.
2259 */
2260 if ((bf_get_be32(prli_fba, nvpr) == 1) &&
2261 (phba->cfg_nvme_enable_fb) &&
2262 (!phba->nvmet_support)) {
2263 /* Both sides support FB. The target's first
2264 * burst size is a 512 byte encoded value.
2265 */
2266 ndlp->nlp_flag |= NLP_FIRSTBURST;
2267 ndlp->nvme_fb_size = bf_get_be32(prli_fb_sz,
2268 nvpr);
2269
2270 /* Expressed in units of 512 bytes */
2271 if (ndlp->nvme_fb_size)
2272 ndlp->nvme_fb_size <<=
2273 LPFC_NVME_FB_SHIFT;
2274 else
2275 ndlp->nvme_fb_size = LPFC_NVME_MAX_FB;
2276 }
2277 }
2278
2279 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_DISC,
2280 "6029 NVME PRLI Cmpl w1 x%08x "
2281 "w4 x%08x w5 x%08x flag x%x, "
2282 "fcp_info x%x nlp_type x%x\n",
2283 be32_to_cpu(nvpr->word1),
2284 be32_to_cpu(nvpr->word4),
2285 be32_to_cpu(nvpr->word5),
2286 ndlp->nlp_flag, ndlp->nlp_fcp_info,
2287 ndlp->nlp_type);
2288 }
2289 if (!(ndlp->nlp_type & NLP_FCP_TARGET) &&
2290 (vport->port_type == LPFC_NPIV_PORT) &&
2291 vport->cfg_restrict_login) {
2292 out:
2293 spin_lock_irq(shost->host_lock);
2294 ndlp->nlp_flag |= NLP_TARGET_REMOVE;
2295 spin_unlock_irq(shost->host_lock);
2296 lpfc_issue_els_logo(vport, ndlp, 0);
2297
2298 ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
2299 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
2300 return ndlp->nlp_state;
2301 }
2302
2303 out_err:
2304 /* The ndlp state cannot move to MAPPED or UNMAPPED before all PRLIs
2305 * are complete.
2306 */
2307 if (ndlp->fc4_prli_sent == 0) {
2308 ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
2309 if (ndlp->nlp_type & (NLP_FCP_TARGET | NLP_NVME_TARGET))
2310 lpfc_nlp_set_state(vport, ndlp, NLP_STE_MAPPED_NODE);
2311 else if (ndlp->nlp_type &
2312 (NLP_FCP_INITIATOR | NLP_NVME_INITIATOR))
2313 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
2314 } else
2315 lpfc_printf_vlog(vport,
2316 KERN_INFO, LOG_ELS,
2317 "3067 PRLI's still outstanding "
2318 "on x%06x - count %d, Pend Node Mode "
2319 "transition...\n",
2320 ndlp->nlp_DID, ndlp->fc4_prli_sent);
2321
2322 return ndlp->nlp_state;
2323 }
2324
2325 /*! lpfc_device_rm_prli_issue
2326 *
2327 * \pre
2328 * \post
2329 * \param phba
2330 * \param ndlp
2331 * \param arg
2332 * \param evt
2333 * \return uint32_t
2334 *
2335 * \b Description:
2336 * This routine is envoked when we a request to remove a nport we are in the
2337 * process of PRLIing. We should software abort outstanding prli, unreg
2338 * login, send a logout. We will change node state to UNUSED_NODE, put it
2339 * on plogi list so it can be freed when LOGO completes.
2340 *
2341 */
2342
2343 static uint32_t
lpfc_device_rm_prli_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2344 lpfc_device_rm_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2345 void *arg, uint32_t evt)
2346 {
2347 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2348
2349 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
2350 spin_lock_irq(shost->host_lock);
2351 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
2352 spin_unlock_irq(shost->host_lock);
2353 return ndlp->nlp_state;
2354 } else {
2355 /* software abort outstanding PLOGI */
2356 lpfc_els_abort(vport->phba, ndlp);
2357
2358 lpfc_drop_node(vport, ndlp);
2359 return NLP_STE_FREED_NODE;
2360 }
2361 }
2362
2363
2364 /*! lpfc_device_recov_prli_issue
2365 *
2366 * \pre
2367 * \post
2368 * \param phba
2369 * \param ndlp
2370 * \param arg
2371 * \param evt
2372 * \return uint32_t
2373 *
2374 * \b Description:
2375 * The routine is envoked when the state of a device is unknown, like
2376 * during a link down. We should remove the nodelist entry from the
2377 * unmapped list, issue a UNREG_LOGIN, do a software abort of the
2378 * outstanding PRLI command, then free the node entry.
2379 */
2380 static uint32_t
lpfc_device_recov_prli_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2381 lpfc_device_recov_prli_issue(struct lpfc_vport *vport,
2382 struct lpfc_nodelist *ndlp,
2383 void *arg,
2384 uint32_t evt)
2385 {
2386 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2387 struct lpfc_hba *phba = vport->phba;
2388
2389 /* Don't do anything that will mess up processing of the
2390 * previous RSCN.
2391 */
2392 if (vport->fc_flag & FC_RSCN_DEFERRED)
2393 return ndlp->nlp_state;
2394
2395 /* software abort outstanding PRLI */
2396 lpfc_els_abort(phba, ndlp);
2397
2398 ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
2399 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
2400 spin_lock_irq(shost->host_lock);
2401 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
2402 spin_unlock_irq(shost->host_lock);
2403 lpfc_disc_set_adisc(vport, ndlp);
2404 return ndlp->nlp_state;
2405 }
2406
2407 static uint32_t
lpfc_rcv_plogi_logo_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2408 lpfc_rcv_plogi_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2409 void *arg, uint32_t evt)
2410 {
2411 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *)arg;
2412 struct ls_rjt stat;
2413
2414 memset(&stat, 0, sizeof(struct ls_rjt));
2415 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
2416 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
2417 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
2418 return ndlp->nlp_state;
2419 }
2420
2421 static uint32_t
lpfc_rcv_prli_logo_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2422 lpfc_rcv_prli_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2423 void *arg, uint32_t evt)
2424 {
2425 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *)arg;
2426 struct ls_rjt stat;
2427
2428 memset(&stat, 0, sizeof(struct ls_rjt));
2429 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
2430 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
2431 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
2432 return ndlp->nlp_state;
2433 }
2434
2435 static uint32_t
lpfc_rcv_logo_logo_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2436 lpfc_rcv_logo_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2437 void *arg, uint32_t evt)
2438 {
2439 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2440 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *)arg;
2441
2442 spin_lock_irq(shost->host_lock);
2443 ndlp->nlp_flag |= NLP_LOGO_ACC;
2444 spin_unlock_irq(shost->host_lock);
2445 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
2446 return ndlp->nlp_state;
2447 }
2448
2449 static uint32_t
lpfc_rcv_padisc_logo_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2450 lpfc_rcv_padisc_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2451 void *arg, uint32_t evt)
2452 {
2453 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *)arg;
2454 struct ls_rjt stat;
2455
2456 memset(&stat, 0, sizeof(struct ls_rjt));
2457 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
2458 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
2459 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
2460 return ndlp->nlp_state;
2461 }
2462
2463 static uint32_t
lpfc_rcv_prlo_logo_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2464 lpfc_rcv_prlo_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2465 void *arg, uint32_t evt)
2466 {
2467 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *)arg;
2468 struct ls_rjt stat;
2469
2470 memset(&stat, 0, sizeof(struct ls_rjt));
2471 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
2472 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
2473 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
2474 return ndlp->nlp_state;
2475 }
2476
2477 static uint32_t
lpfc_cmpl_logo_logo_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2478 lpfc_cmpl_logo_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2479 void *arg, uint32_t evt)
2480 {
2481 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2482
2483 ndlp->nlp_prev_state = NLP_STE_LOGO_ISSUE;
2484 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
2485 spin_lock_irq(shost->host_lock);
2486 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
2487 spin_unlock_irq(shost->host_lock);
2488 lpfc_disc_set_adisc(vport, ndlp);
2489 return ndlp->nlp_state;
2490 }
2491
2492 static uint32_t
lpfc_device_rm_logo_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2493 lpfc_device_rm_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2494 void *arg, uint32_t evt)
2495 {
2496 /*
2497 * DevLoss has timed out and is calling for Device Remove.
2498 * In this case, abort the LOGO and cleanup the ndlp
2499 */
2500
2501 lpfc_unreg_rpi(vport, ndlp);
2502 /* software abort outstanding PLOGI */
2503 lpfc_els_abort(vport->phba, ndlp);
2504 lpfc_drop_node(vport, ndlp);
2505 return NLP_STE_FREED_NODE;
2506 }
2507
2508 static uint32_t
lpfc_device_recov_logo_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2509 lpfc_device_recov_logo_issue(struct lpfc_vport *vport,
2510 struct lpfc_nodelist *ndlp,
2511 void *arg, uint32_t evt)
2512 {
2513 /*
2514 * Device Recovery events have no meaning for a node with a LOGO
2515 * outstanding. The LOGO has to complete first and handle the
2516 * node from that point.
2517 */
2518 return ndlp->nlp_state;
2519 }
2520
2521 static uint32_t
lpfc_rcv_plogi_unmap_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2522 lpfc_rcv_plogi_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2523 void *arg, uint32_t evt)
2524 {
2525 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2526
2527 lpfc_rcv_plogi(vport, ndlp, cmdiocb);
2528 return ndlp->nlp_state;
2529 }
2530
2531 static uint32_t
lpfc_rcv_prli_unmap_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2532 lpfc_rcv_prli_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2533 void *arg, uint32_t evt)
2534 {
2535 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2536
2537 if (!lpfc_rcv_prli_support_check(vport, ndlp, cmdiocb))
2538 return ndlp->nlp_state;
2539
2540 lpfc_rcv_prli(vport, ndlp, cmdiocb);
2541 lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
2542 return ndlp->nlp_state;
2543 }
2544
2545 static uint32_t
lpfc_rcv_logo_unmap_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2546 lpfc_rcv_logo_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2547 void *arg, uint32_t evt)
2548 {
2549 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2550
2551 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
2552 return ndlp->nlp_state;
2553 }
2554
2555 static uint32_t
lpfc_rcv_padisc_unmap_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2556 lpfc_rcv_padisc_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2557 void *arg, uint32_t evt)
2558 {
2559 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2560
2561 lpfc_rcv_padisc(vport, ndlp, cmdiocb);
2562 return ndlp->nlp_state;
2563 }
2564
2565 static uint32_t
lpfc_rcv_prlo_unmap_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2566 lpfc_rcv_prlo_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2567 void *arg, uint32_t evt)
2568 {
2569 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2570
2571 lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
2572 return ndlp->nlp_state;
2573 }
2574
2575 static uint32_t
lpfc_device_recov_unmap_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2576 lpfc_device_recov_unmap_node(struct lpfc_vport *vport,
2577 struct lpfc_nodelist *ndlp,
2578 void *arg,
2579 uint32_t evt)
2580 {
2581 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2582
2583 ndlp->nlp_prev_state = NLP_STE_UNMAPPED_NODE;
2584 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
2585 spin_lock_irq(shost->host_lock);
2586 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
2587 ndlp->nlp_fc4_type &= ~(NLP_FC4_FCP | NLP_FC4_NVME);
2588 spin_unlock_irq(shost->host_lock);
2589 lpfc_disc_set_adisc(vport, ndlp);
2590
2591 return ndlp->nlp_state;
2592 }
2593
2594 static uint32_t
lpfc_rcv_plogi_mapped_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2595 lpfc_rcv_plogi_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2596 void *arg, uint32_t evt)
2597 {
2598 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2599
2600 lpfc_rcv_plogi(vport, ndlp, cmdiocb);
2601 return ndlp->nlp_state;
2602 }
2603
2604 static uint32_t
lpfc_rcv_prli_mapped_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2605 lpfc_rcv_prli_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2606 void *arg, uint32_t evt)
2607 {
2608 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2609
2610 if (!lpfc_rcv_prli_support_check(vport, ndlp, cmdiocb))
2611 return ndlp->nlp_state;
2612 lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
2613 return ndlp->nlp_state;
2614 }
2615
2616 static uint32_t
lpfc_rcv_logo_mapped_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2617 lpfc_rcv_logo_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2618 void *arg, uint32_t evt)
2619 {
2620 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2621
2622 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
2623 return ndlp->nlp_state;
2624 }
2625
2626 static uint32_t
lpfc_rcv_padisc_mapped_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2627 lpfc_rcv_padisc_mapped_node(struct lpfc_vport *vport,
2628 struct lpfc_nodelist *ndlp,
2629 void *arg, uint32_t evt)
2630 {
2631 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2632
2633 lpfc_rcv_padisc(vport, ndlp, cmdiocb);
2634 return ndlp->nlp_state;
2635 }
2636
2637 static uint32_t
lpfc_rcv_prlo_mapped_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2638 lpfc_rcv_prlo_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2639 void *arg, uint32_t evt)
2640 {
2641 struct lpfc_hba *phba = vport->phba;
2642 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2643
2644 /* flush the target */
2645 lpfc_sli_abort_iocb(vport, &phba->sli.sli3_ring[LPFC_FCP_RING],
2646 ndlp->nlp_sid, 0, LPFC_CTX_TGT);
2647
2648 /* Treat like rcv logo */
2649 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_PRLO);
2650 return ndlp->nlp_state;
2651 }
2652
2653 static uint32_t
lpfc_device_recov_mapped_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2654 lpfc_device_recov_mapped_node(struct lpfc_vport *vport,
2655 struct lpfc_nodelist *ndlp,
2656 void *arg,
2657 uint32_t evt)
2658 {
2659 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2660
2661 ndlp->nlp_prev_state = NLP_STE_MAPPED_NODE;
2662 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
2663 spin_lock_irq(shost->host_lock);
2664 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
2665 ndlp->nlp_fc4_type &= ~(NLP_FC4_FCP | NLP_FC4_NVME);
2666 spin_unlock_irq(shost->host_lock);
2667 lpfc_disc_set_adisc(vport, ndlp);
2668 return ndlp->nlp_state;
2669 }
2670
2671 static uint32_t
lpfc_rcv_plogi_npr_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2672 lpfc_rcv_plogi_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2673 void *arg, uint32_t evt)
2674 {
2675 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2676 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2677
2678 /* Ignore PLOGI if we have an outstanding LOGO */
2679 if (ndlp->nlp_flag & (NLP_LOGO_SND | NLP_LOGO_ACC))
2680 return ndlp->nlp_state;
2681 if (lpfc_rcv_plogi(vport, ndlp, cmdiocb)) {
2682 lpfc_cancel_retry_delay_tmo(vport, ndlp);
2683 spin_lock_irq(shost->host_lock);
2684 ndlp->nlp_flag &= ~(NLP_NPR_ADISC | NLP_NPR_2B_DISC);
2685 spin_unlock_irq(shost->host_lock);
2686 } else if (!(ndlp->nlp_flag & NLP_NPR_2B_DISC)) {
2687 /* send PLOGI immediately, move to PLOGI issue state */
2688 if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) {
2689 ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
2690 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
2691 lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
2692 }
2693 }
2694 return ndlp->nlp_state;
2695 }
2696
2697 static uint32_t
lpfc_rcv_prli_npr_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2698 lpfc_rcv_prli_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2699 void *arg, uint32_t evt)
2700 {
2701 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2702 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2703 struct ls_rjt stat;
2704
2705 memset(&stat, 0, sizeof (struct ls_rjt));
2706 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
2707 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
2708 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
2709
2710 if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) {
2711 if (ndlp->nlp_flag & NLP_NPR_ADISC) {
2712 spin_lock_irq(shost->host_lock);
2713 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
2714 ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
2715 spin_unlock_irq(shost->host_lock);
2716 lpfc_nlp_set_state(vport, ndlp, NLP_STE_ADISC_ISSUE);
2717 lpfc_issue_els_adisc(vport, ndlp, 0);
2718 } else {
2719 ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
2720 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
2721 lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
2722 }
2723 }
2724 return ndlp->nlp_state;
2725 }
2726
2727 static uint32_t
lpfc_rcv_logo_npr_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2728 lpfc_rcv_logo_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2729 void *arg, uint32_t evt)
2730 {
2731 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2732
2733 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
2734 return ndlp->nlp_state;
2735 }
2736
2737 static uint32_t
lpfc_rcv_padisc_npr_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2738 lpfc_rcv_padisc_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2739 void *arg, uint32_t evt)
2740 {
2741 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2742
2743 lpfc_rcv_padisc(vport, ndlp, cmdiocb);
2744 /*
2745 * Do not start discovery if discovery is about to start
2746 * or discovery in progress for this node. Starting discovery
2747 * here will affect the counting of discovery threads.
2748 */
2749 if (!(ndlp->nlp_flag & NLP_DELAY_TMO) &&
2750 !(ndlp->nlp_flag & NLP_NPR_2B_DISC)) {
2751 if (ndlp->nlp_flag & NLP_NPR_ADISC) {
2752 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
2753 ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
2754 lpfc_nlp_set_state(vport, ndlp, NLP_STE_ADISC_ISSUE);
2755 lpfc_issue_els_adisc(vport, ndlp, 0);
2756 } else {
2757 ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
2758 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
2759 lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
2760 }
2761 }
2762 return ndlp->nlp_state;
2763 }
2764
2765 static uint32_t
lpfc_rcv_prlo_npr_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2766 lpfc_rcv_prlo_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2767 void *arg, uint32_t evt)
2768 {
2769 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2770 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2771
2772 spin_lock_irq(shost->host_lock);
2773 ndlp->nlp_flag |= NLP_LOGO_ACC;
2774 spin_unlock_irq(shost->host_lock);
2775
2776 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
2777
2778 if ((ndlp->nlp_flag & NLP_DELAY_TMO) == 0) {
2779 mod_timer(&ndlp->nlp_delayfunc,
2780 jiffies + msecs_to_jiffies(1000 * 1));
2781 spin_lock_irq(shost->host_lock);
2782 ndlp->nlp_flag |= NLP_DELAY_TMO;
2783 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
2784 spin_unlock_irq(shost->host_lock);
2785 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
2786 } else {
2787 spin_lock_irq(shost->host_lock);
2788 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
2789 spin_unlock_irq(shost->host_lock);
2790 }
2791 return ndlp->nlp_state;
2792 }
2793
2794 static uint32_t
lpfc_cmpl_plogi_npr_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2795 lpfc_cmpl_plogi_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2796 void *arg, uint32_t evt)
2797 {
2798 struct lpfc_iocbq *cmdiocb, *rspiocb;
2799 IOCB_t *irsp;
2800 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2801
2802 cmdiocb = (struct lpfc_iocbq *) arg;
2803 rspiocb = cmdiocb->context_un.rsp_iocb;
2804
2805 irsp = &rspiocb->iocb;
2806 if (irsp->ulpStatus) {
2807 spin_lock_irq(shost->host_lock);
2808 ndlp->nlp_flag |= NLP_DEFER_RM;
2809 spin_unlock_irq(shost->host_lock);
2810 return NLP_STE_FREED_NODE;
2811 }
2812 return ndlp->nlp_state;
2813 }
2814
2815 static uint32_t
lpfc_cmpl_prli_npr_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2816 lpfc_cmpl_prli_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2817 void *arg, uint32_t evt)
2818 {
2819 struct lpfc_iocbq *cmdiocb, *rspiocb;
2820 IOCB_t *irsp;
2821
2822 cmdiocb = (struct lpfc_iocbq *) arg;
2823 rspiocb = cmdiocb->context_un.rsp_iocb;
2824
2825 irsp = &rspiocb->iocb;
2826 if (irsp->ulpStatus && (ndlp->nlp_flag & NLP_NODEV_REMOVE)) {
2827 lpfc_drop_node(vport, ndlp);
2828 return NLP_STE_FREED_NODE;
2829 }
2830 return ndlp->nlp_state;
2831 }
2832
2833 static uint32_t
lpfc_cmpl_logo_npr_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2834 lpfc_cmpl_logo_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2835 void *arg, uint32_t evt)
2836 {
2837 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2838
2839 /* For the fabric port just clear the fc flags. */
2840 if (ndlp->nlp_DID == Fabric_DID) {
2841 spin_lock_irq(shost->host_lock);
2842 vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP);
2843 spin_unlock_irq(shost->host_lock);
2844 }
2845 lpfc_unreg_rpi(vport, ndlp);
2846 return ndlp->nlp_state;
2847 }
2848
2849 static uint32_t
lpfc_cmpl_adisc_npr_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2850 lpfc_cmpl_adisc_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2851 void *arg, uint32_t evt)
2852 {
2853 struct lpfc_iocbq *cmdiocb, *rspiocb;
2854 IOCB_t *irsp;
2855
2856 cmdiocb = (struct lpfc_iocbq *) arg;
2857 rspiocb = cmdiocb->context_un.rsp_iocb;
2858
2859 irsp = &rspiocb->iocb;
2860 if (irsp->ulpStatus && (ndlp->nlp_flag & NLP_NODEV_REMOVE)) {
2861 lpfc_drop_node(vport, ndlp);
2862 return NLP_STE_FREED_NODE;
2863 }
2864 return ndlp->nlp_state;
2865 }
2866
2867 static uint32_t
lpfc_cmpl_reglogin_npr_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2868 lpfc_cmpl_reglogin_npr_node(struct lpfc_vport *vport,
2869 struct lpfc_nodelist *ndlp,
2870 void *arg, uint32_t evt)
2871 {
2872 LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg;
2873 MAILBOX_t *mb = &pmb->u.mb;
2874
2875 if (!mb->mbxStatus) {
2876 /* SLI4 ports have preallocated logical rpis. */
2877 if (vport->phba->sli_rev < LPFC_SLI_REV4)
2878 ndlp->nlp_rpi = mb->un.varWords[0];
2879 ndlp->nlp_flag |= NLP_RPI_REGISTERED;
2880 if (ndlp->nlp_flag & NLP_LOGO_ACC) {
2881 lpfc_unreg_rpi(vport, ndlp);
2882 }
2883 } else {
2884 if (ndlp->nlp_flag & NLP_NODEV_REMOVE) {
2885 lpfc_drop_node(vport, ndlp);
2886 return NLP_STE_FREED_NODE;
2887 }
2888 }
2889 return ndlp->nlp_state;
2890 }
2891
2892 static uint32_t
lpfc_device_rm_npr_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2893 lpfc_device_rm_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2894 void *arg, uint32_t evt)
2895 {
2896 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2897
2898 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
2899 spin_lock_irq(shost->host_lock);
2900 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
2901 spin_unlock_irq(shost->host_lock);
2902 return ndlp->nlp_state;
2903 }
2904 lpfc_drop_node(vport, ndlp);
2905 return NLP_STE_FREED_NODE;
2906 }
2907
2908 static uint32_t
lpfc_device_recov_npr_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2909 lpfc_device_recov_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2910 void *arg, uint32_t evt)
2911 {
2912 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2913
2914 /* Don't do anything that will mess up processing of the
2915 * previous RSCN.
2916 */
2917 if (vport->fc_flag & FC_RSCN_DEFERRED)
2918 return ndlp->nlp_state;
2919
2920 lpfc_cancel_retry_delay_tmo(vport, ndlp);
2921 spin_lock_irq(shost->host_lock);
2922 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
2923 ndlp->nlp_fc4_type &= ~(NLP_FC4_FCP | NLP_FC4_NVME);
2924 spin_unlock_irq(shost->host_lock);
2925 return ndlp->nlp_state;
2926 }
2927
2928
2929 /* This next section defines the NPort Discovery State Machine */
2930
2931 /* There are 4 different double linked lists nodelist entries can reside on.
2932 * The plogi list and adisc list are used when Link Up discovery or RSCN
2933 * processing is needed. Each list holds the nodes that we will send PLOGI
2934 * or ADISC on. These lists will keep track of what nodes will be effected
2935 * by an RSCN, or a Link Up (Typically, all nodes are effected on Link Up).
2936 * The unmapped_list will contain all nodes that we have successfully logged
2937 * into at the Fibre Channel level. The mapped_list will contain all nodes
2938 * that are mapped FCP targets.
2939 */
2940 /*
2941 * The bind list is a list of undiscovered (potentially non-existent) nodes
2942 * that we have saved binding information on. This information is used when
2943 * nodes transition from the unmapped to the mapped list.
2944 */
2945 /* For UNUSED_NODE state, the node has just been allocated .
2946 * For PLOGI_ISSUE and REG_LOGIN_ISSUE, the node is on
2947 * the PLOGI list. For REG_LOGIN_COMPL, the node is taken off the PLOGI list
2948 * and put on the unmapped list. For ADISC processing, the node is taken off
2949 * the ADISC list and placed on either the mapped or unmapped list (depending
2950 * on its previous state). Once on the unmapped list, a PRLI is issued and the
2951 * state changed to PRLI_ISSUE. When the PRLI completion occurs, the state is
2952 * changed to UNMAPPED_NODE. If the completion indicates a mapped
2953 * node, the node is taken off the unmapped list. The binding list is checked
2954 * for a valid binding, or a binding is automatically assigned. If binding
2955 * assignment is unsuccessful, the node is left on the unmapped list. If
2956 * binding assignment is successful, the associated binding list entry (if
2957 * any) is removed, and the node is placed on the mapped list.
2958 */
2959 /*
2960 * For a Link Down, all nodes on the ADISC, PLOGI, unmapped or mapped
2961 * lists will receive a DEVICE_RECOVERY event. If the linkdown or devloss timers
2962 * expire, all effected nodes will receive a DEVICE_RM event.
2963 */
2964 /*
2965 * For a Link Up or RSCN, all nodes will move from the mapped / unmapped lists
2966 * to either the ADISC or PLOGI list. After a Nameserver query or ALPA loopmap
2967 * check, additional nodes may be added or removed (via DEVICE_RM) to / from
2968 * the PLOGI or ADISC lists. Once the PLOGI and ADISC lists are populated,
2969 * we will first process the ADISC list. 32 entries are processed initially and
2970 * ADISC is initited for each one. Completions / Events for each node are
2971 * funnelled thru the state machine. As each node finishes ADISC processing, it
2972 * starts ADISC for any nodes waiting for ADISC processing. If no nodes are
2973 * waiting, and the ADISC list count is identically 0, then we are done. For
2974 * Link Up discovery, since all nodes on the PLOGI list are UNREG_LOGIN'ed, we
2975 * can issue a CLEAR_LA and reenable Link Events. Next we will process the PLOGI
2976 * list. 32 entries are processed initially and PLOGI is initited for each one.
2977 * Completions / Events for each node are funnelled thru the state machine. As
2978 * each node finishes PLOGI processing, it starts PLOGI for any nodes waiting
2979 * for PLOGI processing. If no nodes are waiting, and the PLOGI list count is
2980 * indentically 0, then we are done. We have now completed discovery / RSCN
2981 * handling. Upon completion, ALL nodes should be on either the mapped or
2982 * unmapped lists.
2983 */
2984
2985 static uint32_t (*lpfc_disc_action[NLP_STE_MAX_STATE * NLP_EVT_MAX_EVENT])
2986 (struct lpfc_vport *, struct lpfc_nodelist *, void *, uint32_t) = {
2987 /* Action routine Event Current State */
2988 lpfc_rcv_plogi_unused_node, /* RCV_PLOGI UNUSED_NODE */
2989 lpfc_rcv_els_unused_node, /* RCV_PRLI */
2990 lpfc_rcv_logo_unused_node, /* RCV_LOGO */
2991 lpfc_rcv_els_unused_node, /* RCV_ADISC */
2992 lpfc_rcv_els_unused_node, /* RCV_PDISC */
2993 lpfc_rcv_els_unused_node, /* RCV_PRLO */
2994 lpfc_disc_illegal, /* CMPL_PLOGI */
2995 lpfc_disc_illegal, /* CMPL_PRLI */
2996 lpfc_cmpl_logo_unused_node, /* CMPL_LOGO */
2997 lpfc_disc_illegal, /* CMPL_ADISC */
2998 lpfc_disc_illegal, /* CMPL_REG_LOGIN */
2999 lpfc_device_rm_unused_node, /* DEVICE_RM */
3000 lpfc_device_recov_unused_node, /* DEVICE_RECOVERY */
3001
3002 lpfc_rcv_plogi_plogi_issue, /* RCV_PLOGI PLOGI_ISSUE */
3003 lpfc_rcv_prli_plogi_issue, /* RCV_PRLI */
3004 lpfc_rcv_logo_plogi_issue, /* RCV_LOGO */
3005 lpfc_rcv_els_plogi_issue, /* RCV_ADISC */
3006 lpfc_rcv_els_plogi_issue, /* RCV_PDISC */
3007 lpfc_rcv_els_plogi_issue, /* RCV_PRLO */
3008 lpfc_cmpl_plogi_plogi_issue, /* CMPL_PLOGI */
3009 lpfc_disc_illegal, /* CMPL_PRLI */
3010 lpfc_cmpl_logo_plogi_issue, /* CMPL_LOGO */
3011 lpfc_disc_illegal, /* CMPL_ADISC */
3012 lpfc_cmpl_reglogin_plogi_issue,/* CMPL_REG_LOGIN */
3013 lpfc_device_rm_plogi_issue, /* DEVICE_RM */
3014 lpfc_device_recov_plogi_issue, /* DEVICE_RECOVERY */
3015
3016 lpfc_rcv_plogi_adisc_issue, /* RCV_PLOGI ADISC_ISSUE */
3017 lpfc_rcv_prli_adisc_issue, /* RCV_PRLI */
3018 lpfc_rcv_logo_adisc_issue, /* RCV_LOGO */
3019 lpfc_rcv_padisc_adisc_issue, /* RCV_ADISC */
3020 lpfc_rcv_padisc_adisc_issue, /* RCV_PDISC */
3021 lpfc_rcv_prlo_adisc_issue, /* RCV_PRLO */
3022 lpfc_disc_illegal, /* CMPL_PLOGI */
3023 lpfc_disc_illegal, /* CMPL_PRLI */
3024 lpfc_disc_illegal, /* CMPL_LOGO */
3025 lpfc_cmpl_adisc_adisc_issue, /* CMPL_ADISC */
3026 lpfc_disc_illegal, /* CMPL_REG_LOGIN */
3027 lpfc_device_rm_adisc_issue, /* DEVICE_RM */
3028 lpfc_device_recov_adisc_issue, /* DEVICE_RECOVERY */
3029
3030 lpfc_rcv_plogi_reglogin_issue, /* RCV_PLOGI REG_LOGIN_ISSUE */
3031 lpfc_rcv_prli_reglogin_issue, /* RCV_PLOGI */
3032 lpfc_rcv_logo_reglogin_issue, /* RCV_LOGO */
3033 lpfc_rcv_padisc_reglogin_issue, /* RCV_ADISC */
3034 lpfc_rcv_padisc_reglogin_issue, /* RCV_PDISC */
3035 lpfc_rcv_prlo_reglogin_issue, /* RCV_PRLO */
3036 lpfc_cmpl_plogi_illegal, /* CMPL_PLOGI */
3037 lpfc_disc_illegal, /* CMPL_PRLI */
3038 lpfc_disc_illegal, /* CMPL_LOGO */
3039 lpfc_disc_illegal, /* CMPL_ADISC */
3040 lpfc_cmpl_reglogin_reglogin_issue,/* CMPL_REG_LOGIN */
3041 lpfc_device_rm_reglogin_issue, /* DEVICE_RM */
3042 lpfc_device_recov_reglogin_issue,/* DEVICE_RECOVERY */
3043
3044 lpfc_rcv_plogi_prli_issue, /* RCV_PLOGI PRLI_ISSUE */
3045 lpfc_rcv_prli_prli_issue, /* RCV_PRLI */
3046 lpfc_rcv_logo_prli_issue, /* RCV_LOGO */
3047 lpfc_rcv_padisc_prli_issue, /* RCV_ADISC */
3048 lpfc_rcv_padisc_prli_issue, /* RCV_PDISC */
3049 lpfc_rcv_prlo_prli_issue, /* RCV_PRLO */
3050 lpfc_cmpl_plogi_illegal, /* CMPL_PLOGI */
3051 lpfc_cmpl_prli_prli_issue, /* CMPL_PRLI */
3052 lpfc_disc_illegal, /* CMPL_LOGO */
3053 lpfc_disc_illegal, /* CMPL_ADISC */
3054 lpfc_disc_illegal, /* CMPL_REG_LOGIN */
3055 lpfc_device_rm_prli_issue, /* DEVICE_RM */
3056 lpfc_device_recov_prli_issue, /* DEVICE_RECOVERY */
3057
3058 lpfc_rcv_plogi_logo_issue, /* RCV_PLOGI LOGO_ISSUE */
3059 lpfc_rcv_prli_logo_issue, /* RCV_PRLI */
3060 lpfc_rcv_logo_logo_issue, /* RCV_LOGO */
3061 lpfc_rcv_padisc_logo_issue, /* RCV_ADISC */
3062 lpfc_rcv_padisc_logo_issue, /* RCV_PDISC */
3063 lpfc_rcv_prlo_logo_issue, /* RCV_PRLO */
3064 lpfc_cmpl_plogi_illegal, /* CMPL_PLOGI */
3065 lpfc_disc_illegal, /* CMPL_PRLI */
3066 lpfc_cmpl_logo_logo_issue, /* CMPL_LOGO */
3067 lpfc_disc_illegal, /* CMPL_ADISC */
3068 lpfc_disc_illegal, /* CMPL_REG_LOGIN */
3069 lpfc_device_rm_logo_issue, /* DEVICE_RM */
3070 lpfc_device_recov_logo_issue, /* DEVICE_RECOVERY */
3071
3072 lpfc_rcv_plogi_unmap_node, /* RCV_PLOGI UNMAPPED_NODE */
3073 lpfc_rcv_prli_unmap_node, /* RCV_PRLI */
3074 lpfc_rcv_logo_unmap_node, /* RCV_LOGO */
3075 lpfc_rcv_padisc_unmap_node, /* RCV_ADISC */
3076 lpfc_rcv_padisc_unmap_node, /* RCV_PDISC */
3077 lpfc_rcv_prlo_unmap_node, /* RCV_PRLO */
3078 lpfc_disc_illegal, /* CMPL_PLOGI */
3079 lpfc_disc_illegal, /* CMPL_PRLI */
3080 lpfc_disc_illegal, /* CMPL_LOGO */
3081 lpfc_disc_illegal, /* CMPL_ADISC */
3082 lpfc_disc_illegal, /* CMPL_REG_LOGIN */
3083 lpfc_disc_illegal, /* DEVICE_RM */
3084 lpfc_device_recov_unmap_node, /* DEVICE_RECOVERY */
3085
3086 lpfc_rcv_plogi_mapped_node, /* RCV_PLOGI MAPPED_NODE */
3087 lpfc_rcv_prli_mapped_node, /* RCV_PRLI */
3088 lpfc_rcv_logo_mapped_node, /* RCV_LOGO */
3089 lpfc_rcv_padisc_mapped_node, /* RCV_ADISC */
3090 lpfc_rcv_padisc_mapped_node, /* RCV_PDISC */
3091 lpfc_rcv_prlo_mapped_node, /* RCV_PRLO */
3092 lpfc_disc_illegal, /* CMPL_PLOGI */
3093 lpfc_disc_illegal, /* CMPL_PRLI */
3094 lpfc_disc_illegal, /* CMPL_LOGO */
3095 lpfc_disc_illegal, /* CMPL_ADISC */
3096 lpfc_disc_illegal, /* CMPL_REG_LOGIN */
3097 lpfc_disc_illegal, /* DEVICE_RM */
3098 lpfc_device_recov_mapped_node, /* DEVICE_RECOVERY */
3099
3100 lpfc_rcv_plogi_npr_node, /* RCV_PLOGI NPR_NODE */
3101 lpfc_rcv_prli_npr_node, /* RCV_PRLI */
3102 lpfc_rcv_logo_npr_node, /* RCV_LOGO */
3103 lpfc_rcv_padisc_npr_node, /* RCV_ADISC */
3104 lpfc_rcv_padisc_npr_node, /* RCV_PDISC */
3105 lpfc_rcv_prlo_npr_node, /* RCV_PRLO */
3106 lpfc_cmpl_plogi_npr_node, /* CMPL_PLOGI */
3107 lpfc_cmpl_prli_npr_node, /* CMPL_PRLI */
3108 lpfc_cmpl_logo_npr_node, /* CMPL_LOGO */
3109 lpfc_cmpl_adisc_npr_node, /* CMPL_ADISC */
3110 lpfc_cmpl_reglogin_npr_node, /* CMPL_REG_LOGIN */
3111 lpfc_device_rm_npr_node, /* DEVICE_RM */
3112 lpfc_device_recov_npr_node, /* DEVICE_RECOVERY */
3113 };
3114
3115 int
lpfc_disc_state_machine(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)3116 lpfc_disc_state_machine(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
3117 void *arg, uint32_t evt)
3118 {
3119 uint32_t cur_state, rc;
3120 uint32_t(*func) (struct lpfc_vport *, struct lpfc_nodelist *, void *,
3121 uint32_t);
3122 uint32_t got_ndlp = 0;
3123 uint32_t data1;
3124
3125 if (lpfc_nlp_get(ndlp))
3126 got_ndlp = 1;
3127
3128 cur_state = ndlp->nlp_state;
3129
3130 data1 = (((uint32_t)ndlp->nlp_fc4_type << 16) |
3131 ((uint32_t)ndlp->nlp_type));
3132 /* DSM in event <evt> on NPort <nlp_DID> in state <cur_state> */
3133 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
3134 "0211 DSM in event x%x on NPort x%x in "
3135 "state %d rpi x%x Data: x%x x%x\n",
3136 evt, ndlp->nlp_DID, cur_state, ndlp->nlp_rpi,
3137 ndlp->nlp_flag, data1);
3138
3139 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_DSM,
3140 "DSM in: evt:%d ste:%d did:x%x",
3141 evt, cur_state, ndlp->nlp_DID);
3142
3143 func = lpfc_disc_action[(cur_state * NLP_EVT_MAX_EVENT) + evt];
3144 rc = (func) (vport, ndlp, arg, evt);
3145
3146 /* DSM out state <rc> on NPort <nlp_DID> */
3147 if (got_ndlp) {
3148 data1 = (((uint32_t)ndlp->nlp_fc4_type << 16) |
3149 ((uint32_t)ndlp->nlp_type));
3150 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
3151 "0212 DSM out state %d on NPort x%x "
3152 "rpi x%x Data: x%x x%x\n",
3153 rc, ndlp->nlp_DID, ndlp->nlp_rpi, ndlp->nlp_flag,
3154 data1);
3155
3156 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_DSM,
3157 "DSM out: ste:%d did:x%x flg:x%x",
3158 rc, ndlp->nlp_DID, ndlp->nlp_flag);
3159 /* Decrement the ndlp reference count held for this function */
3160 lpfc_nlp_put(ndlp);
3161 } else {
3162 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
3163 "0213 DSM out state %d on NPort free\n", rc);
3164
3165 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_DSM,
3166 "DSM out: ste:%d did:x%x flg:x%x",
3167 rc, 0, 0);
3168 }
3169
3170 return rc;
3171 }
3172