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