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dmaengine: imx-sdma: Let the core do the device node validation
[linux/fpc-iii.git] / drivers / scsi / lpfc / lpfc_nportdisc.c
blob59252bfca14e2e153e64c287deeef517f5cf6e6e
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 <linux/nvme-fc-driver.h>
36
37 #include "lpfc_hw4.h"
38 #include "lpfc_hw.h"
39 #include "lpfc_sli.h"
40 #include "lpfc_sli4.h"
41 #include "lpfc_nl.h"
42 #include "lpfc_disc.h"
43 #include "lpfc.h"
44 #include "lpfc_scsi.h"
45 #include "lpfc_nvme.h"
46 #include "lpfc_logmsg.h"
47 #include "lpfc_crtn.h"
48 #include "lpfc_vport.h"
49 #include "lpfc_debugfs.h"
50
51
52 /* Called to verify a rcv'ed ADISC was intended for us. */
53 static int
54 lpfc_check_adisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
55 struct lpfc_name *nn, struct lpfc_name *pn)
56 {
57 /* First, we MUST have a RPI registered */
58 if (!(ndlp->nlp_flag & NLP_RPI_REGISTERED))
59 return 0;
60
61 /* Compare the ADISC rsp WWNN / WWPN matches our internal node
62 * table entry for that node.
63 */
64 if (memcmp(nn, &ndlp->nlp_nodename, sizeof (struct lpfc_name)))
65 return 0;
66
67 if (memcmp(pn, &ndlp->nlp_portname, sizeof (struct lpfc_name)))
68 return 0;
69
70 /* we match, return success */
71 return 1;
72 }
73
74 int
75 lpfc_check_sparm(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
76 struct serv_parm *sp, uint32_t class, int flogi)
77 {
78 volatile struct serv_parm *hsp = &vport->fc_sparam;
79 uint16_t hsp_value, ssp_value = 0;
80
81 /*
82 * The receive data field size and buffer-to-buffer receive data field
83 * size entries are 16 bits but are represented as two 8-bit fields in
84 * the driver data structure to account for rsvd bits and other control
85 * bits. Reconstruct and compare the fields as a 16-bit values before
86 * correcting the byte values.
87 */
88 if (sp->cls1.classValid) {
89 if (!flogi) {
90 hsp_value = ((hsp->cls1.rcvDataSizeMsb << 8) |
91 hsp->cls1.rcvDataSizeLsb);
92 ssp_value = ((sp->cls1.rcvDataSizeMsb << 8) |
93 sp->cls1.rcvDataSizeLsb);
94 if (!ssp_value)
95 goto bad_service_param;
96 if (ssp_value > hsp_value) {
97 sp->cls1.rcvDataSizeLsb =
98 hsp->cls1.rcvDataSizeLsb;
99 sp->cls1.rcvDataSizeMsb =
100 hsp->cls1.rcvDataSizeMsb;
101 }
102 }
103 } else if (class == CLASS1)
104 goto bad_service_param;
105 if (sp->cls2.classValid) {
106 if (!flogi) {
107 hsp_value = ((hsp->cls2.rcvDataSizeMsb << 8) |
108 hsp->cls2.rcvDataSizeLsb);
109 ssp_value = ((sp->cls2.rcvDataSizeMsb << 8) |
110 sp->cls2.rcvDataSizeLsb);
111 if (!ssp_value)
112 goto bad_service_param;
113 if (ssp_value > hsp_value) {
114 sp->cls2.rcvDataSizeLsb =
115 hsp->cls2.rcvDataSizeLsb;
116 sp->cls2.rcvDataSizeMsb =
117 hsp->cls2.rcvDataSizeMsb;
118 }
119 }
120 } else if (class == CLASS2)
121 goto bad_service_param;
122 if (sp->cls3.classValid) {
123 if (!flogi) {
124 hsp_value = ((hsp->cls3.rcvDataSizeMsb << 8) |
125 hsp->cls3.rcvDataSizeLsb);
126 ssp_value = ((sp->cls3.rcvDataSizeMsb << 8) |
127 sp->cls3.rcvDataSizeLsb);
128 if (!ssp_value)
129 goto bad_service_param;
130 if (ssp_value > hsp_value) {
131 sp->cls3.rcvDataSizeLsb =
132 hsp->cls3.rcvDataSizeLsb;
133 sp->cls3.rcvDataSizeMsb =
134 hsp->cls3.rcvDataSizeMsb;
135 }
136 }
137 } else if (class == CLASS3)
138 goto bad_service_param;
139
140 /*
141 * Preserve the upper four bits of the MSB from the PLOGI response.
142 * These bits contain the Buffer-to-Buffer State Change Number
143 * from the target and need to be passed to the FW.
144 */
145 hsp_value = (hsp->cmn.bbRcvSizeMsb << 8) | hsp->cmn.bbRcvSizeLsb;
146 ssp_value = (sp->cmn.bbRcvSizeMsb << 8) | sp->cmn.bbRcvSizeLsb;
147 if (ssp_value > hsp_value) {
148 sp->cmn.bbRcvSizeLsb = hsp->cmn.bbRcvSizeLsb;
149 sp->cmn.bbRcvSizeMsb = (sp->cmn.bbRcvSizeMsb & 0xF0) |
150 (hsp->cmn.bbRcvSizeMsb & 0x0F);
151 }
152
153 memcpy(&ndlp->nlp_nodename, &sp->nodeName, sizeof (struct lpfc_name));
154 memcpy(&ndlp->nlp_portname, &sp->portName, sizeof (struct lpfc_name));
155 return 1;
156 bad_service_param:
157 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
158 "0207 Device %x "
159 "(%02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x) sent "
160 "invalid service parameters. Ignoring device.\n",
161 ndlp->nlp_DID,
162 sp->nodeName.u.wwn[0], sp->nodeName.u.wwn[1],
163 sp->nodeName.u.wwn[2], sp->nodeName.u.wwn[3],
164 sp->nodeName.u.wwn[4], sp->nodeName.u.wwn[5],
165 sp->nodeName.u.wwn[6], sp->nodeName.u.wwn[7]);
166 return 0;
167 }
168
169 static void *
170 lpfc_check_elscmpl_iocb(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
171 struct lpfc_iocbq *rspiocb)
172 {
173 struct lpfc_dmabuf *pcmd, *prsp;
174 uint32_t *lp;
175 void *ptr = NULL;
176 IOCB_t *irsp;
177
178 irsp = &rspiocb->iocb;
179 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
180
181 /* For lpfc_els_abort, context2 could be zero'ed to delay
182 * freeing associated memory till after ABTS completes.
183 */
184 if (pcmd) {
185 prsp = list_get_first(&pcmd->list, struct lpfc_dmabuf,
186 list);
187 if (prsp) {
188 lp = (uint32_t *) prsp->virt;
189 ptr = (void *)((uint8_t *)lp + sizeof(uint32_t));
190 }
191 } else {
192 /* Force ulpStatus error since we are returning NULL ptr */
193 if (!(irsp->ulpStatus)) {
194 irsp->ulpStatus = IOSTAT_LOCAL_REJECT;
195 irsp->un.ulpWord[4] = IOERR_SLI_ABORTED;
196 }
197 ptr = NULL;
198 }
199 return ptr;
200 }
201
202
203
204 /*
205 * Free resources / clean up outstanding I/Os
206 * associated with a LPFC_NODELIST entry. This
207 * routine effectively results in a "software abort".
208 */
209 void
210 lpfc_els_abort(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
211 {
212 LIST_HEAD(abort_list);
213 struct lpfc_sli_ring *pring;
214 struct lpfc_iocbq *iocb, *next_iocb;
215
216 pring = lpfc_phba_elsring(phba);
217
218 /* In case of error recovery path, we might have a NULL pring here */
219 if (unlikely(!pring))
220 return;
221
222 /* Abort outstanding I/O on NPort <nlp_DID> */
223 lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_DISCOVERY,
224 "2819 Abort outstanding I/O on NPort x%x "
225 "Data: x%x x%x x%x\n",
226 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
227 ndlp->nlp_rpi);
228 /* Clean up all fabric IOs first.*/
229 lpfc_fabric_abort_nport(ndlp);
230
231 /*
232 * Lock the ELS ring txcmplq for SLI3/SLI4 and build a local list
233 * of all ELS IOs that need an ABTS. The IOs need to stay on the
234 * txcmplq so that the abort operation completes them successfully.
235 */
236 spin_lock_irq(&phba->hbalock);
237 if (phba->sli_rev == LPFC_SLI_REV4)
238 spin_lock(&pring->ring_lock);
239 list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq, list) {
240 /* Add to abort_list on on NDLP match. */
241 if (lpfc_check_sli_ndlp(phba, pring, iocb, ndlp))
242 list_add_tail(&iocb->dlist, &abort_list);
243 }
244 if (phba->sli_rev == LPFC_SLI_REV4)
245 spin_unlock(&pring->ring_lock);
246 spin_unlock_irq(&phba->hbalock);
247
248 /* Abort the targeted IOs and remove them from the abort list. */
249 list_for_each_entry_safe(iocb, next_iocb, &abort_list, dlist) {
250 spin_lock_irq(&phba->hbalock);
251 list_del_init(&iocb->dlist);
252 lpfc_sli_issue_abort_iotag(phba, pring, iocb);
253 spin_unlock_irq(&phba->hbalock);
254 }
255
256 INIT_LIST_HEAD(&abort_list);
257
258 /* Now process the txq */
259 spin_lock_irq(&phba->hbalock);
260 if (phba->sli_rev == LPFC_SLI_REV4)
261 spin_lock(&pring->ring_lock);
262
263 list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) {
264 /* Check to see if iocb matches the nport we are looking for */
265 if (lpfc_check_sli_ndlp(phba, pring, iocb, ndlp)) {
266 list_del_init(&iocb->list);
267 list_add_tail(&iocb->list, &abort_list);
268 }
269 }
270
271 if (phba->sli_rev == LPFC_SLI_REV4)
272 spin_unlock(&pring->ring_lock);
273 spin_unlock_irq(&phba->hbalock);
274
275 /* Cancel all the IOCBs from the completions list */
276 lpfc_sli_cancel_iocbs(phba, &abort_list,
277 IOSTAT_LOCAL_REJECT, IOERR_SLI_ABORTED);
278
279 lpfc_cancel_retry_delay_tmo(phba->pport, ndlp);
280 }
281
282 static int
283 lpfc_rcv_plogi(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
284 struct lpfc_iocbq *cmdiocb)
285 {
286 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
287 struct lpfc_hba *phba = vport->phba;
288 struct lpfc_dmabuf *pcmd;
289 uint64_t nlp_portwwn = 0;
290 uint32_t *lp;
291 IOCB_t *icmd;
292 struct serv_parm *sp;
293 uint32_t ed_tov;
294 LPFC_MBOXQ_t *mbox;
295 struct ls_rjt stat;
296 uint32_t vid, flag;
297 int rc;
298
299 memset(&stat, 0, sizeof (struct ls_rjt));
300 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
301 lp = (uint32_t *) pcmd->virt;
302 sp = (struct serv_parm *) ((uint8_t *) lp + sizeof (uint32_t));
303 if (wwn_to_u64(sp->portName.u.wwn) == 0) {
304 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
305 "0140 PLOGI Reject: invalid nname\n");
306 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
307 stat.un.b.lsRjtRsnCodeExp = LSEXP_INVALID_PNAME;
308 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
309 NULL);
310 return 0;
311 }
312 if (wwn_to_u64(sp->nodeName.u.wwn) == 0) {
313 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
314 "0141 PLOGI Reject: invalid pname\n");
315 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
316 stat.un.b.lsRjtRsnCodeExp = LSEXP_INVALID_NNAME;
317 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
318 NULL);
319 return 0;
320 }
321
322 nlp_portwwn = wwn_to_u64(ndlp->nlp_portname.u.wwn);
323 if ((lpfc_check_sparm(vport, ndlp, sp, CLASS3, 0) == 0)) {
324 /* Reject this request because invalid parameters */
325 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
326 stat.un.b.lsRjtRsnCodeExp = LSEXP_SPARM_OPTIONS;
327 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
328 NULL);
329 return 0;
330 }
331 icmd = &cmdiocb->iocb;
332
333 /* PLOGI chkparm OK */
334 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
335 "0114 PLOGI chkparm OK Data: x%x x%x x%x "
336 "x%x x%x x%x\n",
337 ndlp->nlp_DID, ndlp->nlp_state, ndlp->nlp_flag,
338 ndlp->nlp_rpi, vport->port_state,
339 vport->fc_flag);
340
341 if (vport->cfg_fcp_class == 2 && sp->cls2.classValid)
342 ndlp->nlp_fcp_info |= CLASS2;
343 else
344 ndlp->nlp_fcp_info |= CLASS3;
345
346 ndlp->nlp_class_sup = 0;
347 if (sp->cls1.classValid)
348 ndlp->nlp_class_sup |= FC_COS_CLASS1;
349 if (sp->cls2.classValid)
350 ndlp->nlp_class_sup |= FC_COS_CLASS2;
351 if (sp->cls3.classValid)
352 ndlp->nlp_class_sup |= FC_COS_CLASS3;
353 if (sp->cls4.classValid)
354 ndlp->nlp_class_sup |= FC_COS_CLASS4;
355 ndlp->nlp_maxframe =
356 ((sp->cmn.bbRcvSizeMsb & 0x0F) << 8) | sp->cmn.bbRcvSizeLsb;
357
358 /* if already logged in, do implicit logout */
359 switch (ndlp->nlp_state) {
360 case NLP_STE_NPR_NODE:
361 if (!(ndlp->nlp_flag & NLP_NPR_ADISC))
362 break;
363 /* fall through */
364 case NLP_STE_REG_LOGIN_ISSUE:
365 case NLP_STE_PRLI_ISSUE:
366 case NLP_STE_UNMAPPED_NODE:
367 case NLP_STE_MAPPED_NODE:
368 /* For initiators, lpfc_plogi_confirm_nport skips fabric did.
369 * For target mode, execute implicit logo.
370 * Fabric nodes go into NPR.
371 */
372 if (!(ndlp->nlp_type & NLP_FABRIC) &&
373 !(phba->nvmet_support)) {
374 lpfc_els_rsp_acc(vport, ELS_CMD_PLOGI, cmdiocb,
375 ndlp, NULL);
376 return 1;
377 }
378 if (nlp_portwwn != 0 &&
379 nlp_portwwn != wwn_to_u64(sp->portName.u.wwn))
380 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
381 "0143 PLOGI recv'd from DID: x%x "
382 "WWPN changed: old %llx new %llx\n",
383 ndlp->nlp_DID,
384 (unsigned long long)nlp_portwwn,
385 (unsigned long long)
386 wwn_to_u64(sp->portName.u.wwn));
387
388 ndlp->nlp_prev_state = ndlp->nlp_state;
389 /* rport needs to be unregistered first */
390 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
391 break;
392 }
393
394 ndlp->nlp_type &= ~(NLP_FCP_TARGET | NLP_FCP_INITIATOR);
395 ndlp->nlp_type &= ~(NLP_NVME_TARGET | NLP_NVME_INITIATOR);
396 ndlp->nlp_fcp_info &= ~NLP_FCP_2_DEVICE;
397 ndlp->nlp_flag &= ~NLP_FIRSTBURST;
398
399 /* Check for Nport to NPort pt2pt protocol */
400 if ((vport->fc_flag & FC_PT2PT) &&
401 !(vport->fc_flag & FC_PT2PT_PLOGI)) {
402 /* rcv'ed PLOGI decides what our NPortId will be */
403 vport->fc_myDID = icmd->un.rcvels.parmRo;
404
405 ed_tov = be32_to_cpu(sp->cmn.e_d_tov);
406 if (sp->cmn.edtovResolution) {
407 /* E_D_TOV ticks are in nanoseconds */
408 ed_tov = (phba->fc_edtov + 999999) / 1000000;
409 }
410
411 /*
412 * For pt-to-pt, use the larger EDTOV
413 * RATOV = 2 * EDTOV
414 */
415 if (ed_tov > phba->fc_edtov)
416 phba->fc_edtov = ed_tov;
417 phba->fc_ratov = (2 * phba->fc_edtov) / 1000;
418
419 memcpy(&phba->fc_fabparam, sp, sizeof(struct serv_parm));
420
421 /* Issue config_link / reg_vfi to account for updated TOV's */
422
423 if (phba->sli_rev == LPFC_SLI_REV4)
424 lpfc_issue_reg_vfi(vport);
425 else {
426 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
427 if (mbox == NULL)
428 goto out;
429 lpfc_config_link(phba, mbox);
430 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
431 mbox->vport = vport;
432 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
433 if (rc == MBX_NOT_FINISHED) {
434 mempool_free(mbox, phba->mbox_mem_pool);
435 goto out;
436 }
437 }
438
439 lpfc_can_disctmo(vport);
440 }
441
442 ndlp->nlp_flag &= ~NLP_SUPPRESS_RSP;
443 if ((phba->sli.sli_flag & LPFC_SLI_SUPPRESS_RSP) &&
444 sp->cmn.valid_vendor_ver_level) {
445 vid = be32_to_cpu(sp->un.vv.vid);
446 flag = be32_to_cpu(sp->un.vv.flags);
447 if ((vid == LPFC_VV_EMLX_ID) && (flag & LPFC_VV_SUPPRESS_RSP))
448 ndlp->nlp_flag |= NLP_SUPPRESS_RSP;
449 }
450
451 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
452 if (!mbox)
453 goto out;
454
455 /* Registering an existing RPI behaves differently for SLI3 vs SLI4 */
456 if (phba->sli_rev == LPFC_SLI_REV4)
457 lpfc_unreg_rpi(vport, ndlp);
458
459 rc = lpfc_reg_rpi(phba, vport->vpi, icmd->un.rcvels.remoteID,
460 (uint8_t *) sp, mbox, ndlp->nlp_rpi);
461 if (rc) {
462 mempool_free(mbox, phba->mbox_mem_pool);
463 goto out;
464 }
465
466 /* ACC PLOGI rsp command needs to execute first,
467 * queue this mbox command to be processed later.
468 */
469 mbox->mbox_cmpl = lpfc_mbx_cmpl_reg_login;
470 /*
471 * mbox->ctx_ndlp = lpfc_nlp_get(ndlp) deferred until mailbox
472 * command issued in lpfc_cmpl_els_acc().
473 */
474 mbox->vport = vport;
475 spin_lock_irq(shost->host_lock);
476 ndlp->nlp_flag |= (NLP_ACC_REGLOGIN | NLP_RCV_PLOGI);
477 spin_unlock_irq(shost->host_lock);
478
479 /*
480 * If there is an outstanding PLOGI issued, abort it before
481 * sending ACC rsp for received PLOGI. If pending plogi
482 * is not canceled here, the plogi will be rejected by
483 * remote port and will be retried. On a configuration with
484 * single discovery thread, this will cause a huge delay in
485 * discovery. Also this will cause multiple state machines
486 * running in parallel for this node.
487 */
488 if (ndlp->nlp_state == NLP_STE_PLOGI_ISSUE) {
489 /* software abort outstanding PLOGI */
490 lpfc_els_abort(phba, ndlp);
491 }
492
493 if ((vport->port_type == LPFC_NPIV_PORT &&
494 vport->cfg_restrict_login)) {
495
496 /* In order to preserve RPIs, we want to cleanup
497 * the default RPI the firmware created to rcv
498 * this ELS request. The only way to do this is
499 * to register, then unregister the RPI.
500 */
501 spin_lock_irq(shost->host_lock);
502 ndlp->nlp_flag |= NLP_RM_DFLT_RPI;
503 spin_unlock_irq(shost->host_lock);
504 stat.un.b.lsRjtRsnCode = LSRJT_INVALID_CMD;
505 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
506 rc = lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb,
507 ndlp, mbox);
508 if (rc)
509 mempool_free(mbox, phba->mbox_mem_pool);
510 return 1;
511 }
512 rc = lpfc_els_rsp_acc(vport, ELS_CMD_PLOGI, cmdiocb, ndlp, mbox);
513 if (rc)
514 mempool_free(mbox, phba->mbox_mem_pool);
515 return 1;
516 out:
517 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
518 stat.un.b.lsRjtRsnCodeExp = LSEXP_OUT_OF_RESOURCE;
519 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
520 return 0;
521 }
522
523 /**
524 * lpfc_mbx_cmpl_resume_rpi - Resume RPI completion routine
525 * @phba: pointer to lpfc hba data structure.
526 * @mboxq: pointer to mailbox object
527 *
528 * This routine is invoked to issue a completion to a rcv'ed
529 * ADISC or PDISC after the paused RPI has been resumed.
530 **/
531 static void
532 lpfc_mbx_cmpl_resume_rpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
533 {
534 struct lpfc_vport *vport;
535 struct lpfc_iocbq *elsiocb;
536 struct lpfc_nodelist *ndlp;
537 uint32_t cmd;
538
539 elsiocb = (struct lpfc_iocbq *)mboxq->ctx_buf;
540 ndlp = (struct lpfc_nodelist *)mboxq->ctx_ndlp;
541 vport = mboxq->vport;
542 cmd = elsiocb->drvrTimeout;
543
544 if (cmd == ELS_CMD_ADISC) {
545 lpfc_els_rsp_adisc_acc(vport, elsiocb, ndlp);
546 } else {
547 lpfc_els_rsp_acc(vport, ELS_CMD_PLOGI, elsiocb,
548 ndlp, NULL);
549 }
550 kfree(elsiocb);
551 mempool_free(mboxq, phba->mbox_mem_pool);
552 }
553
554 static int
555 lpfc_rcv_padisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
556 struct lpfc_iocbq *cmdiocb)
557 {
558 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
559 struct lpfc_iocbq *elsiocb;
560 struct lpfc_dmabuf *pcmd;
561 struct serv_parm *sp;
562 struct lpfc_name *pnn, *ppn;
563 struct ls_rjt stat;
564 ADISC *ap;
565 IOCB_t *icmd;
566 uint32_t *lp;
567 uint32_t cmd;
568
569 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
570 lp = (uint32_t *) pcmd->virt;
571
572 cmd = *lp++;
573 if (cmd == ELS_CMD_ADISC) {
574 ap = (ADISC *) lp;
575 pnn = (struct lpfc_name *) & ap->nodeName;
576 ppn = (struct lpfc_name *) & ap->portName;
577 } else {
578 sp = (struct serv_parm *) lp;
579 pnn = (struct lpfc_name *) & sp->nodeName;
580 ppn = (struct lpfc_name *) & sp->portName;
581 }
582
583 icmd = &cmdiocb->iocb;
584 if (icmd->ulpStatus == 0 && lpfc_check_adisc(vport, ndlp, pnn, ppn)) {
585
586 /*
587 * As soon as we send ACC, the remote NPort can
588 * start sending us data. Thus, for SLI4 we must
589 * resume the RPI before the ACC goes out.
590 */
591 if (vport->phba->sli_rev == LPFC_SLI_REV4) {
592 elsiocb = kmalloc(sizeof(struct lpfc_iocbq),
593 GFP_KERNEL);
594 if (elsiocb) {
595
596 /* Save info from cmd IOCB used in rsp */
597 memcpy((uint8_t *)elsiocb, (uint8_t *)cmdiocb,
598 sizeof(struct lpfc_iocbq));
599
600 /* Save the ELS cmd */
601 elsiocb->drvrTimeout = cmd;
602
603 lpfc_sli4_resume_rpi(ndlp,
604 lpfc_mbx_cmpl_resume_rpi, elsiocb);
605 goto out;
606 }
607 }
608
609 if (cmd == ELS_CMD_ADISC) {
610 lpfc_els_rsp_adisc_acc(vport, cmdiocb, ndlp);
611 } else {
612 lpfc_els_rsp_acc(vport, ELS_CMD_PLOGI, cmdiocb,
613 ndlp, NULL);
614 }
615 out:
616 /* If we are authenticated, move to the proper state */
617 if (ndlp->nlp_type & NLP_FCP_TARGET)
618 lpfc_nlp_set_state(vport, ndlp, NLP_STE_MAPPED_NODE);
619 else
620 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
621
622 return 1;
623 }
624 /* Reject this request because invalid parameters */
625 stat.un.b.lsRjtRsvd0 = 0;
626 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
627 stat.un.b.lsRjtRsnCodeExp = LSEXP_SPARM_OPTIONS;
628 stat.un.b.vendorUnique = 0;
629 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
630
631 /* 1 sec timeout */
632 mod_timer(&ndlp->nlp_delayfunc, jiffies + msecs_to_jiffies(1000));
633
634 spin_lock_irq(shost->host_lock);
635 ndlp->nlp_flag |= NLP_DELAY_TMO;
636 spin_unlock_irq(shost->host_lock);
637 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
638 ndlp->nlp_prev_state = ndlp->nlp_state;
639 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
640 return 0;
641 }
642
643 static int
644 lpfc_rcv_logo(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
645 struct lpfc_iocbq *cmdiocb, uint32_t els_cmd)
646 {
647 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
648 struct lpfc_hba *phba = vport->phba;
649 struct lpfc_vport **vports;
650 int i, active_vlink_present = 0 ;
651
652 /* Put ndlp in NPR state with 1 sec timeout for plogi, ACC logo */
653 /* Only call LOGO ACC for first LOGO, this avoids sending unnecessary
654 * PLOGIs during LOGO storms from a device.
655 */
656 spin_lock_irq(shost->host_lock);
657 ndlp->nlp_flag |= NLP_LOGO_ACC;
658 spin_unlock_irq(shost->host_lock);
659 if (els_cmd == ELS_CMD_PRLO)
660 lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
661 else
662 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
663 if (ndlp->nlp_DID == Fabric_DID) {
664 if (vport->port_state <= LPFC_FDISC)
665 goto out;
666 lpfc_linkdown_port(vport);
667 spin_lock_irq(shost->host_lock);
668 vport->fc_flag |= FC_VPORT_LOGO_RCVD;
669 spin_unlock_irq(shost->host_lock);
670 vports = lpfc_create_vport_work_array(phba);
671 if (vports) {
672 for (i = 0; i <= phba->max_vports && vports[i] != NULL;
673 i++) {
674 if ((!(vports[i]->fc_flag &
675 FC_VPORT_LOGO_RCVD)) &&
676 (vports[i]->port_state > LPFC_FDISC)) {
677 active_vlink_present = 1;
678 break;
679 }
680 }
681 lpfc_destroy_vport_work_array(phba, vports);
682 }
683
684 /*
685 * Don't re-instantiate if vport is marked for deletion.
686 * If we are here first then vport_delete is going to wait
687 * for discovery to complete.
688 */
689 if (!(vport->load_flag & FC_UNLOADING) &&
690 active_vlink_present) {
691 /*
692 * If there are other active VLinks present,
693 * re-instantiate the Vlink using FDISC.
694 */
695 mod_timer(&ndlp->nlp_delayfunc,
696 jiffies + msecs_to_jiffies(1000));
697 spin_lock_irq(shost->host_lock);
698 ndlp->nlp_flag |= NLP_DELAY_TMO;
699 spin_unlock_irq(shost->host_lock);
700 ndlp->nlp_last_elscmd = ELS_CMD_FDISC;
701 vport->port_state = LPFC_FDISC;
702 } else {
703 spin_lock_irq(shost->host_lock);
704 phba->pport->fc_flag &= ~FC_LOGO_RCVD_DID_CHNG;
705 spin_unlock_irq(shost->host_lock);
706 lpfc_retry_pport_discovery(phba);
707 }
708 } else if ((!(ndlp->nlp_type & NLP_FABRIC) &&
709 ((ndlp->nlp_type & NLP_FCP_TARGET) ||
710 !(ndlp->nlp_type & NLP_FCP_INITIATOR))) ||
711 (ndlp->nlp_state == NLP_STE_ADISC_ISSUE)) {
712 /* Only try to re-login if this is NOT a Fabric Node */
713 mod_timer(&ndlp->nlp_delayfunc,
714 jiffies + msecs_to_jiffies(1000 * 1));
715 spin_lock_irq(shost->host_lock);
716 ndlp->nlp_flag |= NLP_DELAY_TMO;
717 spin_unlock_irq(shost->host_lock);
718
719 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
720 }
721 out:
722 ndlp->nlp_prev_state = ndlp->nlp_state;
723 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
724
725 spin_lock_irq(shost->host_lock);
726 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
727 spin_unlock_irq(shost->host_lock);
728 /* The driver has to wait until the ACC completes before it continues
729 * processing the LOGO. The action will resume in
730 * lpfc_cmpl_els_logo_acc routine. Since part of processing includes an
731 * unreg_login, the driver waits so the ACC does not get aborted.
732 */
733 return 0;
734 }
735
736 static uint32_t
737 lpfc_rcv_prli_support_check(struct lpfc_vport *vport,
738 struct lpfc_nodelist *ndlp,
739 struct lpfc_iocbq *cmdiocb)
740 {
741 struct ls_rjt stat;
742 uint32_t *payload;
743 uint32_t cmd;
744
745 payload = ((struct lpfc_dmabuf *)cmdiocb->context2)->virt;
746 cmd = *payload;
747 if (vport->phba->nvmet_support) {
748 /* Must be a NVME PRLI */
749 if (cmd == ELS_CMD_PRLI)
750 goto out;
751 } else {
752 /* Initiator mode. */
753 if (!vport->nvmei_support && (cmd == ELS_CMD_NVMEPRLI))
754 goto out;
755 }
756 return 1;
757 out:
758 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NVME_DISC,
759 "6115 Rcv PRLI (%x) check failed: ndlp rpi %d "
760 "state x%x flags x%x\n",
761 cmd, ndlp->nlp_rpi, ndlp->nlp_state,
762 ndlp->nlp_flag);
763 memset(&stat, 0, sizeof(struct ls_rjt));
764 stat.un.b.lsRjtRsnCode = LSRJT_CMD_UNSUPPORTED;
765 stat.un.b.lsRjtRsnCodeExp = LSEXP_REQ_UNSUPPORTED;
766 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb,
767 ndlp, NULL);
768 return 0;
769 }
770
771 static void
772 lpfc_rcv_prli(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
773 struct lpfc_iocbq *cmdiocb)
774 {
775 struct lpfc_hba *phba = vport->phba;
776 struct lpfc_dmabuf *pcmd;
777 uint32_t *lp;
778 PRLI *npr;
779 struct fc_rport *rport = ndlp->rport;
780 u32 roles;
781
782 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
783 lp = (uint32_t *) pcmd->virt;
784 npr = (PRLI *) ((uint8_t *) lp + sizeof (uint32_t));
785
786 if ((npr->prliType == PRLI_FCP_TYPE) ||
787 (npr->prliType == PRLI_NVME_TYPE)) {
788 if (npr->initiatorFunc) {
789 if (npr->prliType == PRLI_FCP_TYPE)
790 ndlp->nlp_type |= NLP_FCP_INITIATOR;
791 if (npr->prliType == PRLI_NVME_TYPE)
792 ndlp->nlp_type |= NLP_NVME_INITIATOR;
793 }
794 if (npr->targetFunc) {
795 if (npr->prliType == PRLI_FCP_TYPE)
796 ndlp->nlp_type |= NLP_FCP_TARGET;
797 if (npr->prliType == PRLI_NVME_TYPE)
798 ndlp->nlp_type |= NLP_NVME_TARGET;
799 if (npr->writeXferRdyDis)
800 ndlp->nlp_flag |= NLP_FIRSTBURST;
801 }
802 if (npr->Retry)
803 ndlp->nlp_fcp_info |= NLP_FCP_2_DEVICE;
804
805 /* If this driver is in nvme target mode, set the ndlp's fc4
806 * type to NVME provided the PRLI response claims NVME FC4
807 * type. Target mode does not issue gft_id so doesn't get
808 * the fc4 type set until now.
809 */
810 if (phba->nvmet_support && (npr->prliType == PRLI_NVME_TYPE)) {
811 ndlp->nlp_fc4_type |= NLP_FC4_NVME;
812 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
813 }
814 if (npr->prliType == PRLI_FCP_TYPE)
815 ndlp->nlp_fc4_type |= NLP_FC4_FCP;
816 }
817 if (rport) {
818 /* We need to update the rport role values */
819 roles = FC_RPORT_ROLE_UNKNOWN;
820 if (ndlp->nlp_type & NLP_FCP_INITIATOR)
821 roles |= FC_RPORT_ROLE_FCP_INITIATOR;
822 if (ndlp->nlp_type & NLP_FCP_TARGET)
823 roles |= FC_RPORT_ROLE_FCP_TARGET;
824
825 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
826 "rport rolechg: role:x%x did:x%x flg:x%x",
827 roles, ndlp->nlp_DID, ndlp->nlp_flag);
828
829 if (vport->cfg_enable_fc4_type != LPFC_ENABLE_NVME)
830 fc_remote_port_rolechg(rport, roles);
831 }
832 }
833
834 static uint32_t
835 lpfc_disc_set_adisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
836 {
837 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
838
839 if (!(ndlp->nlp_flag & NLP_RPI_REGISTERED)) {
840 spin_lock_irq(shost->host_lock);
841 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
842 spin_unlock_irq(shost->host_lock);
843 return 0;
844 }
845
846 if (!(vport->fc_flag & FC_PT2PT)) {
847 /* Check config parameter use-adisc or FCP-2 */
848 if ((vport->cfg_use_adisc && (vport->fc_flag & FC_RSCN_MODE)) ||
849 ((ndlp->nlp_fcp_info & NLP_FCP_2_DEVICE) &&
850 (ndlp->nlp_type & NLP_FCP_TARGET))) {
851 spin_lock_irq(shost->host_lock);
852 ndlp->nlp_flag |= NLP_NPR_ADISC;
853 spin_unlock_irq(shost->host_lock);
854 return 1;
855 }
856 }
857
858 spin_lock_irq(shost->host_lock);
859 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
860 spin_unlock_irq(shost->host_lock);
861 lpfc_unreg_rpi(vport, ndlp);
862 return 0;
863 }
864
865 /**
866 * lpfc_release_rpi - Release a RPI by issuing unreg_login mailbox cmd.
867 * @phba : Pointer to lpfc_hba structure.
868 * @vport: Pointer to lpfc_vport structure.
869 * @rpi : rpi to be release.
870 *
871 * This function will send a unreg_login mailbox command to the firmware
872 * to release a rpi.
873 **/
874 static void
875 lpfc_release_rpi(struct lpfc_hba *phba, struct lpfc_vport *vport,
876 struct lpfc_nodelist *ndlp, uint16_t rpi)
877 {
878 LPFC_MBOXQ_t *pmb;
879 int rc;
880
881 /* If there is already an UNREG in progress for this ndlp,
882 * no need to queue up another one.
883 */
884 if (ndlp->nlp_flag & NLP_UNREG_INP) {
885 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
886 "1435 release_rpi SKIP UNREG x%x on "
887 "NPort x%x deferred x%x flg x%x "
888 "Data: %p\n",
889 ndlp->nlp_rpi, ndlp->nlp_DID,
890 ndlp->nlp_defer_did,
891 ndlp->nlp_flag, ndlp);
892 return;
893 }
894
895 pmb = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool,
896 GFP_KERNEL);
897 if (!pmb)
898 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
899 "2796 mailbox memory allocation failed \n");
900 else {
901 lpfc_unreg_login(phba, vport->vpi, rpi, pmb);
902 pmb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
903 pmb->vport = vport;
904 pmb->ctx_ndlp = ndlp;
905
906 if (((ndlp->nlp_DID & Fabric_DID_MASK) != Fabric_DID_MASK) &&
907 (!(vport->fc_flag & FC_OFFLINE_MODE)))
908 ndlp->nlp_flag |= NLP_UNREG_INP;
909
910 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
911 "1437 release_rpi UNREG x%x "
912 "on NPort x%x flg x%x\n",
913 ndlp->nlp_rpi, ndlp->nlp_DID, ndlp->nlp_flag);
914
915 rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);
916 if (rc == MBX_NOT_FINISHED)
917 mempool_free(pmb, phba->mbox_mem_pool);
918 }
919 }
920
921 static uint32_t
922 lpfc_disc_illegal(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
923 void *arg, uint32_t evt)
924 {
925 struct lpfc_hba *phba;
926 LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg;
927 uint16_t rpi;
928
929 phba = vport->phba;
930 /* Release the RPI if reglogin completing */
931 if (!(phba->pport->load_flag & FC_UNLOADING) &&
932 (evt == NLP_EVT_CMPL_REG_LOGIN) &&
933 (!pmb->u.mb.mbxStatus)) {
934 rpi = pmb->u.mb.un.varWords[0];
935 lpfc_release_rpi(phba, vport, ndlp, rpi);
936 }
937 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
938 "0271 Illegal State Transition: node x%x "
939 "event x%x, state x%x Data: x%x x%x\n",
940 ndlp->nlp_DID, evt, ndlp->nlp_state, ndlp->nlp_rpi,
941 ndlp->nlp_flag);
942 return ndlp->nlp_state;
943 }
944
945 static uint32_t
946 lpfc_cmpl_plogi_illegal(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
947 void *arg, uint32_t evt)
948 {
949 /* This transition is only legal if we previously
950 * rcv'ed a PLOGI. Since we don't want 2 discovery threads
951 * working on the same NPortID, do nothing for this thread
952 * to stop it.
953 */
954 if (!(ndlp->nlp_flag & NLP_RCV_PLOGI)) {
955 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
956 "0272 Illegal State Transition: node x%x "
957 "event x%x, state x%x Data: x%x x%x\n",
958 ndlp->nlp_DID, evt, ndlp->nlp_state, ndlp->nlp_rpi,
959 ndlp->nlp_flag);
960 }
961 return ndlp->nlp_state;
962 }
963
964 /* Start of Discovery State Machine routines */
965
966 static uint32_t
967 lpfc_rcv_plogi_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
968 void *arg, uint32_t evt)
969 {
970 struct lpfc_iocbq *cmdiocb;
971
972 cmdiocb = (struct lpfc_iocbq *) arg;
973
974 if (lpfc_rcv_plogi(vport, ndlp, cmdiocb)) {
975 return ndlp->nlp_state;
976 }
977 return NLP_STE_FREED_NODE;
978 }
979
980 static uint32_t
981 lpfc_rcv_els_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
982 void *arg, uint32_t evt)
983 {
984 lpfc_issue_els_logo(vport, ndlp, 0);
985 return ndlp->nlp_state;
986 }
987
988 static uint32_t
989 lpfc_rcv_logo_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
990 void *arg, uint32_t evt)
991 {
992 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
993 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
994
995 spin_lock_irq(shost->host_lock);
996 ndlp->nlp_flag |= NLP_LOGO_ACC;
997 spin_unlock_irq(shost->host_lock);
998 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
999
1000 return ndlp->nlp_state;
1001 }
1002
1003 static uint32_t
1004 lpfc_cmpl_logo_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1005 void *arg, uint32_t evt)
1006 {
1007 return NLP_STE_FREED_NODE;
1008 }
1009
1010 static uint32_t
1011 lpfc_device_rm_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1012 void *arg, uint32_t evt)
1013 {
1014 return NLP_STE_FREED_NODE;
1015 }
1016
1017 static uint32_t
1018 lpfc_device_recov_unused_node(struct lpfc_vport *vport,
1019 struct lpfc_nodelist *ndlp,
1020 void *arg, uint32_t evt)
1021 {
1022 return ndlp->nlp_state;
1023 }
1024
1025 static uint32_t
1026 lpfc_rcv_plogi_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1027 void *arg, uint32_t evt)
1028 {
1029 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1030 struct lpfc_hba *phba = vport->phba;
1031 struct lpfc_iocbq *cmdiocb = arg;
1032 struct lpfc_dmabuf *pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
1033 uint32_t *lp = (uint32_t *) pcmd->virt;
1034 struct serv_parm *sp = (struct serv_parm *) (lp + 1);
1035 struct ls_rjt stat;
1036 int port_cmp;
1037
1038 memset(&stat, 0, sizeof (struct ls_rjt));
1039
1040 /* For a PLOGI, we only accept if our portname is less
1041 * than the remote portname.
1042 */
1043 phba->fc_stat.elsLogiCol++;
1044 port_cmp = memcmp(&vport->fc_portname, &sp->portName,
1045 sizeof(struct lpfc_name));
1046
1047 if (port_cmp >= 0) {
1048 /* Reject this request because the remote node will accept
1049 ours */
1050 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
1051 stat.un.b.lsRjtRsnCodeExp = LSEXP_CMD_IN_PROGRESS;
1052 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
1053 NULL);
1054 } else {
1055 if (lpfc_rcv_plogi(vport, ndlp, cmdiocb) &&
1056 (ndlp->nlp_flag & NLP_NPR_2B_DISC) &&
1057 (vport->num_disc_nodes)) {
1058 spin_lock_irq(shost->host_lock);
1059 ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
1060 spin_unlock_irq(shost->host_lock);
1061 /* Check if there are more PLOGIs to be sent */
1062 lpfc_more_plogi(vport);
1063 if (vport->num_disc_nodes == 0) {
1064 spin_lock_irq(shost->host_lock);
1065 vport->fc_flag &= ~FC_NDISC_ACTIVE;
1066 spin_unlock_irq(shost->host_lock);
1067 lpfc_can_disctmo(vport);
1068 lpfc_end_rscn(vport);
1069 }
1070 }
1071 } /* If our portname was less */
1072
1073 return ndlp->nlp_state;
1074 }
1075
1076 static uint32_t
1077 lpfc_rcv_prli_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1078 void *arg, uint32_t evt)
1079 {
1080 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1081 struct ls_rjt stat;
1082
1083 memset(&stat, 0, sizeof (struct ls_rjt));
1084 stat.un.b.lsRjtRsnCode = LSRJT_LOGICAL_BSY;
1085 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
1086 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
1087 return ndlp->nlp_state;
1088 }
1089
1090 static uint32_t
1091 lpfc_rcv_logo_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1092 void *arg, uint32_t evt)
1093 {
1094 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1095
1096 /* Retrieve RPI from LOGO IOCB. RPI is used for CMD_ABORT_XRI_CN */
1097 if (vport->phba->sli_rev == LPFC_SLI_REV3)
1098 ndlp->nlp_rpi = cmdiocb->iocb.ulpIoTag;
1099 /* software abort outstanding PLOGI */
1100 lpfc_els_abort(vport->phba, ndlp);
1101
1102 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1103 return ndlp->nlp_state;
1104 }
1105
1106 static uint32_t
1107 lpfc_rcv_els_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1108 void *arg, uint32_t evt)
1109 {
1110 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1111 struct lpfc_hba *phba = vport->phba;
1112 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1113
1114 /* software abort outstanding PLOGI */
1115 lpfc_els_abort(phba, ndlp);
1116
1117 if (evt == NLP_EVT_RCV_LOGO) {
1118 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
1119 } else {
1120 lpfc_issue_els_logo(vport, ndlp, 0);
1121 }
1122
1123 /* Put ndlp in npr state set plogi timer for 1 sec */
1124 mod_timer(&ndlp->nlp_delayfunc, jiffies + msecs_to_jiffies(1000 * 1));
1125 spin_lock_irq(shost->host_lock);
1126 ndlp->nlp_flag |= NLP_DELAY_TMO;
1127 spin_unlock_irq(shost->host_lock);
1128 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
1129 ndlp->nlp_prev_state = NLP_STE_PLOGI_ISSUE;
1130 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1131
1132 return ndlp->nlp_state;
1133 }
1134
1135 static uint32_t
1136 lpfc_cmpl_plogi_plogi_issue(struct lpfc_vport *vport,
1137 struct lpfc_nodelist *ndlp,
1138 void *arg,
1139 uint32_t evt)
1140 {
1141 struct lpfc_hba *phba = vport->phba;
1142 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1143 struct lpfc_iocbq *cmdiocb, *rspiocb;
1144 struct lpfc_dmabuf *pcmd, *prsp, *mp;
1145 uint32_t *lp;
1146 uint32_t vid, flag;
1147 IOCB_t *irsp;
1148 struct serv_parm *sp;
1149 uint32_t ed_tov;
1150 LPFC_MBOXQ_t *mbox;
1151 int rc;
1152
1153 cmdiocb = (struct lpfc_iocbq *) arg;
1154 rspiocb = cmdiocb->context_un.rsp_iocb;
1155
1156 if (ndlp->nlp_flag & NLP_ACC_REGLOGIN) {
1157 /* Recovery from PLOGI collision logic */
1158 return ndlp->nlp_state;
1159 }
1160
1161 irsp = &rspiocb->iocb;
1162
1163 if (irsp->ulpStatus)
1164 goto out;
1165
1166 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
1167
1168 prsp = list_get_first(&pcmd->list, struct lpfc_dmabuf, list);
1169 if (!prsp)
1170 goto out;
1171
1172 lp = (uint32_t *) prsp->virt;
1173 sp = (struct serv_parm *) ((uint8_t *) lp + sizeof (uint32_t));
1174
1175 /* Some switches have FDMI servers returning 0 for WWN */
1176 if ((ndlp->nlp_DID != FDMI_DID) &&
1177 (wwn_to_u64(sp->portName.u.wwn) == 0 ||
1178 wwn_to_u64(sp->nodeName.u.wwn) == 0)) {
1179 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
1180 "0142 PLOGI RSP: Invalid WWN.\n");
1181 goto out;
1182 }
1183 if (!lpfc_check_sparm(vport, ndlp, sp, CLASS3, 0))
1184 goto out;
1185 /* PLOGI chkparm OK */
1186 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
1187 "0121 PLOGI chkparm OK Data: x%x x%x x%x x%x\n",
1188 ndlp->nlp_DID, ndlp->nlp_state,
1189 ndlp->nlp_flag, ndlp->nlp_rpi);
1190 if (vport->cfg_fcp_class == 2 && (sp->cls2.classValid))
1191 ndlp->nlp_fcp_info |= CLASS2;
1192 else
1193 ndlp->nlp_fcp_info |= CLASS3;
1194
1195 ndlp->nlp_class_sup = 0;
1196 if (sp->cls1.classValid)
1197 ndlp->nlp_class_sup |= FC_COS_CLASS1;
1198 if (sp->cls2.classValid)
1199 ndlp->nlp_class_sup |= FC_COS_CLASS2;
1200 if (sp->cls3.classValid)
1201 ndlp->nlp_class_sup |= FC_COS_CLASS3;
1202 if (sp->cls4.classValid)
1203 ndlp->nlp_class_sup |= FC_COS_CLASS4;
1204 ndlp->nlp_maxframe =
1205 ((sp->cmn.bbRcvSizeMsb & 0x0F) << 8) | sp->cmn.bbRcvSizeLsb;
1206
1207 if ((vport->fc_flag & FC_PT2PT) &&
1208 (vport->fc_flag & FC_PT2PT_PLOGI)) {
1209 ed_tov = be32_to_cpu(sp->cmn.e_d_tov);
1210 if (sp->cmn.edtovResolution) {
1211 /* E_D_TOV ticks are in nanoseconds */
1212 ed_tov = (phba->fc_edtov + 999999) / 1000000;
1213 }
1214
1215 ndlp->nlp_flag &= ~NLP_SUPPRESS_RSP;
1216 if ((phba->sli.sli_flag & LPFC_SLI_SUPPRESS_RSP) &&
1217 sp->cmn.valid_vendor_ver_level) {
1218 vid = be32_to_cpu(sp->un.vv.vid);
1219 flag = be32_to_cpu(sp->un.vv.flags);
1220 if ((vid == LPFC_VV_EMLX_ID) &&
1221 (flag & LPFC_VV_SUPPRESS_RSP))
1222 ndlp->nlp_flag |= NLP_SUPPRESS_RSP;
1223 }
1224
1225 /*
1226 * Use the larger EDTOV
1227 * RATOV = 2 * EDTOV for pt-to-pt
1228 */
1229 if (ed_tov > phba->fc_edtov)
1230 phba->fc_edtov = ed_tov;
1231 phba->fc_ratov = (2 * phba->fc_edtov) / 1000;
1232
1233 memcpy(&phba->fc_fabparam, sp, sizeof(struct serv_parm));
1234
1235 /* Issue config_link / reg_vfi to account for updated TOV's */
1236 if (phba->sli_rev == LPFC_SLI_REV4) {
1237 lpfc_issue_reg_vfi(vport);
1238 } else {
1239 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1240 if (!mbox) {
1241 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
1242 "0133 PLOGI: no memory "
1243 "for config_link "
1244 "Data: x%x x%x x%x x%x\n",
1245 ndlp->nlp_DID, ndlp->nlp_state,
1246 ndlp->nlp_flag, ndlp->nlp_rpi);
1247 goto out;
1248 }
1249
1250 lpfc_config_link(phba, mbox);
1251
1252 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
1253 mbox->vport = vport;
1254 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
1255 if (rc == MBX_NOT_FINISHED) {
1256 mempool_free(mbox, phba->mbox_mem_pool);
1257 goto out;
1258 }
1259 }
1260 }
1261
1262 lpfc_unreg_rpi(vport, ndlp);
1263
1264 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1265 if (!mbox) {
1266 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
1267 "0018 PLOGI: no memory for reg_login "
1268 "Data: x%x x%x x%x x%x\n",
1269 ndlp->nlp_DID, ndlp->nlp_state,
1270 ndlp->nlp_flag, ndlp->nlp_rpi);
1271 goto out;
1272 }
1273
1274 if (lpfc_reg_rpi(phba, vport->vpi, irsp->un.elsreq64.remoteID,
1275 (uint8_t *) sp, mbox, ndlp->nlp_rpi) == 0) {
1276 switch (ndlp->nlp_DID) {
1277 case NameServer_DID:
1278 mbox->mbox_cmpl = lpfc_mbx_cmpl_ns_reg_login;
1279 break;
1280 case FDMI_DID:
1281 mbox->mbox_cmpl = lpfc_mbx_cmpl_fdmi_reg_login;
1282 break;
1283 default:
1284 ndlp->nlp_flag |= NLP_REG_LOGIN_SEND;
1285 mbox->mbox_cmpl = lpfc_mbx_cmpl_reg_login;
1286 }
1287 mbox->ctx_ndlp = lpfc_nlp_get(ndlp);
1288 mbox->vport = vport;
1289 if (lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT)
1290 != MBX_NOT_FINISHED) {
1291 lpfc_nlp_set_state(vport, ndlp,
1292 NLP_STE_REG_LOGIN_ISSUE);
1293 return ndlp->nlp_state;
1294 }
1295 if (ndlp->nlp_flag & NLP_REG_LOGIN_SEND)
1296 ndlp->nlp_flag &= ~NLP_REG_LOGIN_SEND;
1297 /* decrement node reference count to the failed mbox
1298 * command
1299 */
1300 lpfc_nlp_put(ndlp);
1301 mp = (struct lpfc_dmabuf *)mbox->ctx_buf;
1302 lpfc_mbuf_free(phba, mp->virt, mp->phys);
1303 kfree(mp);
1304 mempool_free(mbox, phba->mbox_mem_pool);
1305
1306 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
1307 "0134 PLOGI: cannot issue reg_login "
1308 "Data: x%x x%x x%x x%x\n",
1309 ndlp->nlp_DID, ndlp->nlp_state,
1310 ndlp->nlp_flag, ndlp->nlp_rpi);
1311 } else {
1312 mempool_free(mbox, phba->mbox_mem_pool);
1313
1314 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
1315 "0135 PLOGI: cannot format reg_login "
1316 "Data: x%x x%x x%x x%x\n",
1317 ndlp->nlp_DID, ndlp->nlp_state,
1318 ndlp->nlp_flag, ndlp->nlp_rpi);
1319 }
1320
1321
1322 out:
1323 if (ndlp->nlp_DID == NameServer_DID) {
1324 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
1325 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
1326 "0261 Cannot Register NameServer login\n");
1327 }
1328
1329 /*
1330 ** In case the node reference counter does not go to zero, ensure that
1331 ** the stale state for the node is not processed.
1332 */
1333
1334 ndlp->nlp_prev_state = ndlp->nlp_state;
1335 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1336 spin_lock_irq(shost->host_lock);
1337 ndlp->nlp_flag |= NLP_DEFER_RM;
1338 spin_unlock_irq(shost->host_lock);
1339 return NLP_STE_FREED_NODE;
1340 }
1341
1342 static uint32_t
1343 lpfc_cmpl_logo_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1344 void *arg, uint32_t evt)
1345 {
1346 return ndlp->nlp_state;
1347 }
1348
1349 static uint32_t
1350 lpfc_cmpl_reglogin_plogi_issue(struct lpfc_vport *vport,
1351 struct lpfc_nodelist *ndlp, void *arg, uint32_t evt)
1352 {
1353 struct lpfc_hba *phba;
1354 LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg;
1355 MAILBOX_t *mb = &pmb->u.mb;
1356 uint16_t rpi;
1357
1358 phba = vport->phba;
1359 /* Release the RPI */
1360 if (!(phba->pport->load_flag & FC_UNLOADING) &&
1361 !mb->mbxStatus) {
1362 rpi = pmb->u.mb.un.varWords[0];
1363 lpfc_release_rpi(phba, vport, ndlp, rpi);
1364 }
1365 return ndlp->nlp_state;
1366 }
1367
1368 static uint32_t
1369 lpfc_device_rm_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1370 void *arg, uint32_t evt)
1371 {
1372 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1373
1374 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1375 spin_lock_irq(shost->host_lock);
1376 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1377 spin_unlock_irq(shost->host_lock);
1378 return ndlp->nlp_state;
1379 } else {
1380 /* software abort outstanding PLOGI */
1381 lpfc_els_abort(vport->phba, ndlp);
1382
1383 lpfc_drop_node(vport, ndlp);
1384 return NLP_STE_FREED_NODE;
1385 }
1386 }
1387
1388 static uint32_t
1389 lpfc_device_recov_plogi_issue(struct lpfc_vport *vport,
1390 struct lpfc_nodelist *ndlp,
1391 void *arg,
1392 uint32_t evt)
1393 {
1394 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1395 struct lpfc_hba *phba = vport->phba;
1396
1397 /* Don't do anything that will mess up processing of the
1398 * previous RSCN.
1399 */
1400 if (vport->fc_flag & FC_RSCN_DEFERRED)
1401 return ndlp->nlp_state;
1402
1403 /* software abort outstanding PLOGI */
1404 lpfc_els_abort(phba, ndlp);
1405
1406 ndlp->nlp_prev_state = NLP_STE_PLOGI_ISSUE;
1407 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1408 spin_lock_irq(shost->host_lock);
1409 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1410 spin_unlock_irq(shost->host_lock);
1411
1412 return ndlp->nlp_state;
1413 }
1414
1415 static uint32_t
1416 lpfc_rcv_plogi_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1417 void *arg, uint32_t evt)
1418 {
1419 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1420 struct lpfc_hba *phba = vport->phba;
1421 struct lpfc_iocbq *cmdiocb;
1422
1423 /* software abort outstanding ADISC */
1424 lpfc_els_abort(phba, ndlp);
1425
1426 cmdiocb = (struct lpfc_iocbq *) arg;
1427
1428 if (lpfc_rcv_plogi(vport, ndlp, cmdiocb)) {
1429 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1430 spin_lock_irq(shost->host_lock);
1431 ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
1432 spin_unlock_irq(shost->host_lock);
1433 if (vport->num_disc_nodes)
1434 lpfc_more_adisc(vport);
1435 }
1436 return ndlp->nlp_state;
1437 }
1438 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1439 lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
1440 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
1441
1442 return ndlp->nlp_state;
1443 }
1444
1445 static uint32_t
1446 lpfc_rcv_prli_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1447 void *arg, uint32_t evt)
1448 {
1449 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1450
1451 if (lpfc_rcv_prli_support_check(vport, ndlp, cmdiocb))
1452 lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1453 return ndlp->nlp_state;
1454 }
1455
1456 static uint32_t
1457 lpfc_rcv_logo_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1458 void *arg, uint32_t evt)
1459 {
1460 struct lpfc_hba *phba = vport->phba;
1461 struct lpfc_iocbq *cmdiocb;
1462
1463 cmdiocb = (struct lpfc_iocbq *) arg;
1464
1465 /* software abort outstanding ADISC */
1466 lpfc_els_abort(phba, ndlp);
1467
1468 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1469 return ndlp->nlp_state;
1470 }
1471
1472 static uint32_t
1473 lpfc_rcv_padisc_adisc_issue(struct lpfc_vport *vport,
1474 struct lpfc_nodelist *ndlp,
1475 void *arg, uint32_t evt)
1476 {
1477 struct lpfc_iocbq *cmdiocb;
1478
1479 cmdiocb = (struct lpfc_iocbq *) arg;
1480
1481 lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1482 return ndlp->nlp_state;
1483 }
1484
1485 static uint32_t
1486 lpfc_rcv_prlo_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1487 void *arg, uint32_t evt)
1488 {
1489 struct lpfc_iocbq *cmdiocb;
1490
1491 cmdiocb = (struct lpfc_iocbq *) arg;
1492
1493 /* Treat like rcv logo */
1494 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_PRLO);
1495 return ndlp->nlp_state;
1496 }
1497
1498 static uint32_t
1499 lpfc_cmpl_adisc_adisc_issue(struct lpfc_vport *vport,
1500 struct lpfc_nodelist *ndlp,
1501 void *arg, uint32_t evt)
1502 {
1503 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1504 struct lpfc_hba *phba = vport->phba;
1505 struct lpfc_iocbq *cmdiocb, *rspiocb;
1506 IOCB_t *irsp;
1507 ADISC *ap;
1508 int rc;
1509
1510 cmdiocb = (struct lpfc_iocbq *) arg;
1511 rspiocb = cmdiocb->context_un.rsp_iocb;
1512
1513 ap = (ADISC *)lpfc_check_elscmpl_iocb(phba, cmdiocb, rspiocb);
1514 irsp = &rspiocb->iocb;
1515
1516 if ((irsp->ulpStatus) ||
1517 (!lpfc_check_adisc(vport, ndlp, &ap->nodeName, &ap->portName))) {
1518 /* 1 sec timeout */
1519 mod_timer(&ndlp->nlp_delayfunc,
1520 jiffies + msecs_to_jiffies(1000));
1521 spin_lock_irq(shost->host_lock);
1522 ndlp->nlp_flag |= NLP_DELAY_TMO;
1523 spin_unlock_irq(shost->host_lock);
1524 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
1525
1526 memset(&ndlp->nlp_nodename, 0, sizeof(struct lpfc_name));
1527 memset(&ndlp->nlp_portname, 0, sizeof(struct lpfc_name));
1528
1529 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1530 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1531 lpfc_unreg_rpi(vport, ndlp);
1532 return ndlp->nlp_state;
1533 }
1534
1535 if (phba->sli_rev == LPFC_SLI_REV4) {
1536 rc = lpfc_sli4_resume_rpi(ndlp, NULL, NULL);
1537 if (rc) {
1538 /* Stay in state and retry. */
1539 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1540 return ndlp->nlp_state;
1541 }
1542 }
1543
1544 if (ndlp->nlp_type & NLP_FCP_TARGET) {
1545 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1546 lpfc_nlp_set_state(vport, ndlp, NLP_STE_MAPPED_NODE);
1547 } else {
1548 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1549 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1550 }
1551
1552 return ndlp->nlp_state;
1553 }
1554
1555 static uint32_t
1556 lpfc_device_rm_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1557 void *arg, uint32_t evt)
1558 {
1559 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1560
1561 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1562 spin_lock_irq(shost->host_lock);
1563 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1564 spin_unlock_irq(shost->host_lock);
1565 return ndlp->nlp_state;
1566 } else {
1567 /* software abort outstanding ADISC */
1568 lpfc_els_abort(vport->phba, ndlp);
1569
1570 lpfc_drop_node(vport, ndlp);
1571 return NLP_STE_FREED_NODE;
1572 }
1573 }
1574
1575 static uint32_t
1576 lpfc_device_recov_adisc_issue(struct lpfc_vport *vport,
1577 struct lpfc_nodelist *ndlp,
1578 void *arg,
1579 uint32_t evt)
1580 {
1581 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1582 struct lpfc_hba *phba = vport->phba;
1583
1584 /* Don't do anything that will mess up processing of the
1585 * previous RSCN.
1586 */
1587 if (vport->fc_flag & FC_RSCN_DEFERRED)
1588 return ndlp->nlp_state;
1589
1590 /* software abort outstanding ADISC */
1591 lpfc_els_abort(phba, ndlp);
1592
1593 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1594 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1595 spin_lock_irq(shost->host_lock);
1596 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1597 spin_unlock_irq(shost->host_lock);
1598 lpfc_disc_set_adisc(vport, ndlp);
1599 return ndlp->nlp_state;
1600 }
1601
1602 static uint32_t
1603 lpfc_rcv_plogi_reglogin_issue(struct lpfc_vport *vport,
1604 struct lpfc_nodelist *ndlp,
1605 void *arg,
1606 uint32_t evt)
1607 {
1608 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1609
1610 lpfc_rcv_plogi(vport, ndlp, cmdiocb);
1611 return ndlp->nlp_state;
1612 }
1613
1614 static uint32_t
1615 lpfc_rcv_prli_reglogin_issue(struct lpfc_vport *vport,
1616 struct lpfc_nodelist *ndlp,
1617 void *arg,
1618 uint32_t evt)
1619 {
1620 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1621 struct ls_rjt stat;
1622
1623 if (!lpfc_rcv_prli_support_check(vport, ndlp, cmdiocb)) {
1624 return ndlp->nlp_state;
1625 }
1626 if (vport->phba->nvmet_support) {
1627 /* NVME Target mode. Handle and respond to the PRLI and
1628 * transition to UNMAPPED provided the RPI has completed
1629 * registration.
1630 */
1631 if (ndlp->nlp_flag & NLP_RPI_REGISTERED) {
1632 lpfc_rcv_prli(vport, ndlp, cmdiocb);
1633 lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1634 } else {
1635 /* RPI registration has not completed. Reject the PRLI
1636 * to prevent an illegal state transition when the
1637 * rpi registration does complete.
1638 */
1639 memset(&stat, 0, sizeof(struct ls_rjt));
1640 stat.un.b.lsRjtRsnCode = LSRJT_LOGICAL_BSY;
1641 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
1642 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb,
1643 ndlp, NULL);
1644 return ndlp->nlp_state;
1645 }
1646 } else {
1647 /* Initiator mode. */
1648 lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1649 }
1650 return ndlp->nlp_state;
1651 }
1652
1653 static uint32_t
1654 lpfc_rcv_logo_reglogin_issue(struct lpfc_vport *vport,
1655 struct lpfc_nodelist *ndlp,
1656 void *arg,
1657 uint32_t evt)
1658 {
1659 struct lpfc_hba *phba = vport->phba;
1660 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1661 LPFC_MBOXQ_t *mb;
1662 LPFC_MBOXQ_t *nextmb;
1663 struct lpfc_dmabuf *mp;
1664
1665 cmdiocb = (struct lpfc_iocbq *) arg;
1666
1667 /* cleanup any ndlp on mbox q waiting for reglogin cmpl */
1668 if ((mb = phba->sli.mbox_active)) {
1669 if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) &&
1670 (ndlp == (struct lpfc_nodelist *)mb->ctx_ndlp)) {
1671 ndlp->nlp_flag &= ~NLP_REG_LOGIN_SEND;
1672 lpfc_nlp_put(ndlp);
1673 mb->ctx_ndlp = NULL;
1674 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
1675 }
1676 }
1677
1678 spin_lock_irq(&phba->hbalock);
1679 list_for_each_entry_safe(mb, nextmb, &phba->sli.mboxq, list) {
1680 if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) &&
1681 (ndlp == (struct lpfc_nodelist *)mb->ctx_ndlp)) {
1682 mp = (struct lpfc_dmabuf *)(mb->ctx_buf);
1683 if (mp) {
1684 __lpfc_mbuf_free(phba, mp->virt, mp->phys);
1685 kfree(mp);
1686 }
1687 ndlp->nlp_flag &= ~NLP_REG_LOGIN_SEND;
1688 lpfc_nlp_put(ndlp);
1689 list_del(&mb->list);
1690 phba->sli.mboxq_cnt--;
1691 mempool_free(mb, phba->mbox_mem_pool);
1692 }
1693 }
1694 spin_unlock_irq(&phba->hbalock);
1695
1696 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1697 return ndlp->nlp_state;
1698 }
1699
1700 static uint32_t
1701 lpfc_rcv_padisc_reglogin_issue(struct lpfc_vport *vport,
1702 struct lpfc_nodelist *ndlp,
1703 void *arg,
1704 uint32_t evt)
1705 {
1706 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1707
1708 lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1709 return ndlp->nlp_state;
1710 }
1711
1712 static uint32_t
1713 lpfc_rcv_prlo_reglogin_issue(struct lpfc_vport *vport,
1714 struct lpfc_nodelist *ndlp,
1715 void *arg,
1716 uint32_t evt)
1717 {
1718 struct lpfc_iocbq *cmdiocb;
1719
1720 cmdiocb = (struct lpfc_iocbq *) arg;
1721 lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
1722 return ndlp->nlp_state;
1723 }
1724
1725 static uint32_t
1726 lpfc_cmpl_reglogin_reglogin_issue(struct lpfc_vport *vport,
1727 struct lpfc_nodelist *ndlp,
1728 void *arg,
1729 uint32_t evt)
1730 {
1731 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1732 struct lpfc_hba *phba = vport->phba;
1733 LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg;
1734 MAILBOX_t *mb = &pmb->u.mb;
1735 uint32_t did = mb->un.varWords[1];
1736
1737 if (mb->mbxStatus) {
1738 /* RegLogin failed */
1739 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
1740 "0246 RegLogin failed Data: x%x x%x x%x x%x "
1741 "x%x\n",
1742 did, mb->mbxStatus, vport->port_state,
1743 mb->un.varRegLogin.vpi,
1744 mb->un.varRegLogin.rpi);
1745 /*
1746 * If RegLogin failed due to lack of HBA resources do not
1747 * retry discovery.
1748 */
1749 if (mb->mbxStatus == MBXERR_RPI_FULL) {
1750 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1751 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1752 return ndlp->nlp_state;
1753 }
1754
1755 /* Put ndlp in npr state set plogi timer for 1 sec */
1756 mod_timer(&ndlp->nlp_delayfunc,
1757 jiffies + msecs_to_jiffies(1000 * 1));
1758 spin_lock_irq(shost->host_lock);
1759 ndlp->nlp_flag |= NLP_DELAY_TMO;
1760 spin_unlock_irq(shost->host_lock);
1761 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
1762
1763 lpfc_issue_els_logo(vport, ndlp, 0);
1764 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1765 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1766 return ndlp->nlp_state;
1767 }
1768
1769 /* SLI4 ports have preallocated logical rpis. */
1770 if (phba->sli_rev < LPFC_SLI_REV4)
1771 ndlp->nlp_rpi = mb->un.varWords[0];
1772
1773 ndlp->nlp_flag |= NLP_RPI_REGISTERED;
1774
1775 /* Only if we are not a fabric nport do we issue PRLI */
1776 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
1777 "3066 RegLogin Complete on x%x x%x x%x\n",
1778 did, ndlp->nlp_type, ndlp->nlp_fc4_type);
1779 if (!(ndlp->nlp_type & NLP_FABRIC) &&
1780 (phba->nvmet_support == 0)) {
1781 /* The driver supports FCP and NVME concurrently. If the
1782 * ndlp's nlp_fc4_type is still zero, the driver doesn't
1783 * know what PRLI to send yet. Figure that out now and
1784 * call PRLI depending on the outcome.
1785 */
1786 if (vport->fc_flag & FC_PT2PT) {
1787 /* If we are pt2pt, there is no Fabric to determine
1788 * the FC4 type of the remote nport. So if NVME
1789 * is configured try it.
1790 */
1791 ndlp->nlp_fc4_type |= NLP_FC4_FCP;
1792 if ((vport->cfg_enable_fc4_type == LPFC_ENABLE_BOTH) ||
1793 (vport->cfg_enable_fc4_type == LPFC_ENABLE_NVME)) {
1794 ndlp->nlp_fc4_type |= NLP_FC4_NVME;
1795 /* We need to update the localport also */
1796 lpfc_nvme_update_localport(vport);
1797 }
1798
1799 } else if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
1800 ndlp->nlp_fc4_type |= NLP_FC4_FCP;
1801
1802 } else if (ndlp->nlp_fc4_type == 0) {
1803 /* If we are only configured for FCP, the driver
1804 * should just issue PRLI for FCP. Otherwise issue
1805 * GFT_ID to determine if remote port supports NVME.
1806 */
1807 if (vport->cfg_enable_fc4_type != LPFC_ENABLE_FCP) {
1808 lpfc_ns_cmd(vport, SLI_CTNS_GFT_ID, 0,
1809 ndlp->nlp_DID);
1810 return ndlp->nlp_state;
1811 }
1812 ndlp->nlp_fc4_type = NLP_FC4_FCP;
1813 }
1814
1815 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1816 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PRLI_ISSUE);
1817 lpfc_issue_els_prli(vport, ndlp, 0);
1818 } else {
1819 if ((vport->fc_flag & FC_PT2PT) && phba->nvmet_support)
1820 phba->targetport->port_id = vport->fc_myDID;
1821
1822 /* Only Fabric ports should transition. NVME target
1823 * must complete PRLI.
1824 */
1825 if (ndlp->nlp_type & NLP_FABRIC) {
1826 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1827 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1828 }
1829 }
1830 return ndlp->nlp_state;
1831 }
1832
1833 static uint32_t
1834 lpfc_device_rm_reglogin_issue(struct lpfc_vport *vport,
1835 struct lpfc_nodelist *ndlp,
1836 void *arg,
1837 uint32_t evt)
1838 {
1839 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1840
1841 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1842 spin_lock_irq(shost->host_lock);
1843 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1844 spin_unlock_irq(shost->host_lock);
1845 return ndlp->nlp_state;
1846 } else {
1847 lpfc_drop_node(vport, ndlp);
1848 return NLP_STE_FREED_NODE;
1849 }
1850 }
1851
1852 static uint32_t
1853 lpfc_device_recov_reglogin_issue(struct lpfc_vport *vport,
1854 struct lpfc_nodelist *ndlp,
1855 void *arg,
1856 uint32_t evt)
1857 {
1858 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1859
1860 /* Don't do anything that will mess up processing of the
1861 * previous RSCN.
1862 */
1863 if (vport->fc_flag & FC_RSCN_DEFERRED)
1864 return ndlp->nlp_state;
1865
1866 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1867 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1868 spin_lock_irq(shost->host_lock);
1869
1870 /* If we are a target we won't immediately transition into PRLI,
1871 * so if REG_LOGIN already completed we don't need to ignore it.
1872 */
1873 if (!(ndlp->nlp_flag & NLP_RPI_REGISTERED) ||
1874 !vport->phba->nvmet_support)
1875 ndlp->nlp_flag |= NLP_IGNR_REG_CMPL;
1876
1877 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1878 spin_unlock_irq(shost->host_lock);
1879 lpfc_disc_set_adisc(vport, ndlp);
1880 return ndlp->nlp_state;
1881 }
1882
1883 static uint32_t
1884 lpfc_rcv_plogi_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1885 void *arg, uint32_t evt)
1886 {
1887 struct lpfc_iocbq *cmdiocb;
1888
1889 cmdiocb = (struct lpfc_iocbq *) arg;
1890
1891 lpfc_rcv_plogi(vport, ndlp, cmdiocb);
1892 return ndlp->nlp_state;
1893 }
1894
1895 static uint32_t
1896 lpfc_rcv_prli_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1897 void *arg, uint32_t evt)
1898 {
1899 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1900
1901 if (!lpfc_rcv_prli_support_check(vport, ndlp, cmdiocb))
1902 return ndlp->nlp_state;
1903 lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1904 return ndlp->nlp_state;
1905 }
1906
1907 static uint32_t
1908 lpfc_rcv_logo_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1909 void *arg, uint32_t evt)
1910 {
1911 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1912
1913 /* Software abort outstanding PRLI before sending acc */
1914 lpfc_els_abort(vport->phba, ndlp);
1915
1916 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1917 return ndlp->nlp_state;
1918 }
1919
1920 static uint32_t
1921 lpfc_rcv_padisc_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1922 void *arg, 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 /* This routine is envoked when we rcv a PRLO request from a nport
1931 * we are logged into. We should send back a PRLO rsp setting the
1932 * appropriate bits.
1933 * NEXT STATE = PRLI_ISSUE
1934 */
1935 static uint32_t
1936 lpfc_rcv_prlo_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1937 void *arg, uint32_t evt)
1938 {
1939 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1940
1941 lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
1942 return ndlp->nlp_state;
1943 }
1944
1945 static uint32_t
1946 lpfc_cmpl_prli_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1947 void *arg, uint32_t evt)
1948 {
1949 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1950 struct lpfc_iocbq *cmdiocb, *rspiocb;
1951 struct lpfc_hba *phba = vport->phba;
1952 IOCB_t *irsp;
1953 PRLI *npr;
1954 struct lpfc_nvme_prli *nvpr;
1955 void *temp_ptr;
1956
1957 cmdiocb = (struct lpfc_iocbq *) arg;
1958 rspiocb = cmdiocb->context_un.rsp_iocb;
1959
1960 /* A solicited PRLI is either FCP or NVME. The PRLI cmd/rsp
1961 * format is different so NULL the two PRLI types so that the
1962 * driver correctly gets the correct context.
1963 */
1964 npr = NULL;
1965 nvpr = NULL;
1966 temp_ptr = lpfc_check_elscmpl_iocb(phba, cmdiocb, rspiocb);
1967 if (cmdiocb->iocb_flag & LPFC_PRLI_FCP_REQ)
1968 npr = (PRLI *) temp_ptr;
1969 else if (cmdiocb->iocb_flag & LPFC_PRLI_NVME_REQ)
1970 nvpr = (struct lpfc_nvme_prli *) temp_ptr;
1971
1972 irsp = &rspiocb->iocb;
1973 if (irsp->ulpStatus) {
1974 if ((vport->port_type == LPFC_NPIV_PORT) &&
1975 vport->cfg_restrict_login) {
1976 goto out;
1977 }
1978
1979 /* Adjust the nlp_type accordingly if the PRLI failed */
1980 if (npr)
1981 ndlp->nlp_fc4_type &= ~NLP_FC4_FCP;
1982 if (nvpr)
1983 ndlp->nlp_fc4_type &= ~NLP_FC4_NVME;
1984
1985 /* We can't set the DSM state till BOTH PRLIs complete */
1986 goto out_err;
1987 }
1988
1989 if (npr && (npr->acceptRspCode == PRLI_REQ_EXECUTED) &&
1990 (npr->prliType == PRLI_FCP_TYPE)) {
1991 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_DISC,
1992 "6028 FCP NPR PRLI Cmpl Init %d Target %d\n",
1993 npr->initiatorFunc,
1994 npr->targetFunc);
1995 if (npr->initiatorFunc)
1996 ndlp->nlp_type |= NLP_FCP_INITIATOR;
1997 if (npr->targetFunc) {
1998 ndlp->nlp_type |= NLP_FCP_TARGET;
1999 if (npr->writeXferRdyDis)
2000 ndlp->nlp_flag |= NLP_FIRSTBURST;
2001 }
2002 if (npr->Retry)
2003 ndlp->nlp_fcp_info |= NLP_FCP_2_DEVICE;
2004
2005 } else if (nvpr &&
2006 (bf_get_be32(prli_acc_rsp_code, nvpr) ==
2007 PRLI_REQ_EXECUTED) &&
2008 (bf_get_be32(prli_type_code, nvpr) ==
2009 PRLI_NVME_TYPE)) {
2010
2011 /* Complete setting up the remote ndlp personality. */
2012 if (bf_get_be32(prli_init, nvpr))
2013 ndlp->nlp_type |= NLP_NVME_INITIATOR;
2014
2015 /* Target driver cannot solicit NVME FB. */
2016 if (bf_get_be32(prli_tgt, nvpr)) {
2017 /* Complete the nvme target roles. The transport
2018 * needs to know if the rport is capable of
2019 * discovery in addition to its role.
2020 */
2021 ndlp->nlp_type |= NLP_NVME_TARGET;
2022 if (bf_get_be32(prli_disc, nvpr))
2023 ndlp->nlp_type |= NLP_NVME_DISCOVERY;
2024
2025 /*
2026 * If prli_fba is set, the Target supports FirstBurst.
2027 * If prli_fb_sz is 0, the FirstBurst size is unlimited,
2028 * otherwise it defines the actual size supported by
2029 * the NVME Target.
2030 */
2031 if ((bf_get_be32(prli_fba, nvpr) == 1) &&
2032 (phba->cfg_nvme_enable_fb) &&
2033 (!phba->nvmet_support)) {
2034 /* Both sides support FB. The target's first
2035 * burst size is a 512 byte encoded value.
2036 */
2037 ndlp->nlp_flag |= NLP_FIRSTBURST;
2038 ndlp->nvme_fb_size = bf_get_be32(prli_fb_sz,
2039 nvpr);
2040
2041 /* Expressed in units of 512 bytes */
2042 if (ndlp->nvme_fb_size)
2043 ndlp->nvme_fb_size <<=
2044 LPFC_NVME_FB_SHIFT;
2045 else
2046 ndlp->nvme_fb_size = LPFC_NVME_MAX_FB;
2047 }
2048 }
2049
2050 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_DISC,
2051 "6029 NVME PRLI Cmpl w1 x%08x "
2052 "w4 x%08x w5 x%08x flag x%x, "
2053 "fcp_info x%x nlp_type x%x\n",
2054 be32_to_cpu(nvpr->word1),
2055 be32_to_cpu(nvpr->word4),
2056 be32_to_cpu(nvpr->word5),
2057 ndlp->nlp_flag, ndlp->nlp_fcp_info,
2058 ndlp->nlp_type);
2059 }
2060 if (!(ndlp->nlp_type & NLP_FCP_TARGET) &&
2061 (vport->port_type == LPFC_NPIV_PORT) &&
2062 vport->cfg_restrict_login) {
2063 out:
2064 spin_lock_irq(shost->host_lock);
2065 ndlp->nlp_flag |= NLP_TARGET_REMOVE;
2066 spin_unlock_irq(shost->host_lock);
2067 lpfc_issue_els_logo(vport, ndlp, 0);
2068
2069 ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
2070 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
2071 return ndlp->nlp_state;
2072 }
2073
2074 out_err:
2075 /* The ndlp state cannot move to MAPPED or UNMAPPED before all PRLIs
2076 * are complete.
2077 */
2078 if (ndlp->fc4_prli_sent == 0) {
2079 ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
2080 if (ndlp->nlp_type & (NLP_FCP_TARGET | NLP_NVME_TARGET))
2081 lpfc_nlp_set_state(vport, ndlp, NLP_STE_MAPPED_NODE);
2082 else if (ndlp->nlp_type &
2083 (NLP_FCP_INITIATOR | NLP_NVME_INITIATOR))
2084 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
2085 } else
2086 lpfc_printf_vlog(vport,
2087 KERN_INFO, LOG_ELS,
2088 "3067 PRLI's still outstanding "
2089 "on x%06x - count %d, Pend Node Mode "
2090 "transition...\n",
2091 ndlp->nlp_DID, ndlp->fc4_prli_sent);
2092
2093 return ndlp->nlp_state;
2094 }
2095
2096 /*! lpfc_device_rm_prli_issue
2097 *
2098 * \pre
2099 * \post
2100 * \param phba
2101 * \param ndlp
2102 * \param arg
2103 * \param evt
2104 * \return uint32_t
2105 *
2106 * \b Description:
2107 * This routine is envoked when we a request to remove a nport we are in the
2108 * process of PRLIing. We should software abort outstanding prli, unreg
2109 * login, send a logout. We will change node state to UNUSED_NODE, put it
2110 * on plogi list so it can be freed when LOGO completes.
2111 *
2112 */
2113
2114 static uint32_t
2115 lpfc_device_rm_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2116 void *arg, uint32_t evt)
2117 {
2118 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2119
2120 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
2121 spin_lock_irq(shost->host_lock);
2122 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
2123 spin_unlock_irq(shost->host_lock);
2124 return ndlp->nlp_state;
2125 } else {
2126 /* software abort outstanding PLOGI */
2127 lpfc_els_abort(vport->phba, ndlp);
2128
2129 lpfc_drop_node(vport, ndlp);
2130 return NLP_STE_FREED_NODE;
2131 }
2132 }
2133
2134
2135 /*! lpfc_device_recov_prli_issue
2136 *
2137 * \pre
2138 * \post
2139 * \param phba
2140 * \param ndlp
2141 * \param arg
2142 * \param evt
2143 * \return uint32_t
2144 *
2145 * \b Description:
2146 * The routine is envoked when the state of a device is unknown, like
2147 * during a link down. We should remove the nodelist entry from the
2148 * unmapped list, issue a UNREG_LOGIN, do a software abort of the
2149 * outstanding PRLI command, then free the node entry.
2150 */
2151 static uint32_t
2152 lpfc_device_recov_prli_issue(struct lpfc_vport *vport,
2153 struct lpfc_nodelist *ndlp,
2154 void *arg,
2155 uint32_t evt)
2156 {
2157 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2158 struct lpfc_hba *phba = vport->phba;
2159
2160 /* Don't do anything that will mess up processing of the
2161 * previous RSCN.
2162 */
2163 if (vport->fc_flag & FC_RSCN_DEFERRED)
2164 return ndlp->nlp_state;
2165
2166 /* software abort outstanding PRLI */
2167 lpfc_els_abort(phba, ndlp);
2168
2169 ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
2170 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
2171 spin_lock_irq(shost->host_lock);
2172 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
2173 spin_unlock_irq(shost->host_lock);
2174 lpfc_disc_set_adisc(vport, ndlp);
2175 return ndlp->nlp_state;
2176 }
2177
2178 static uint32_t
2179 lpfc_rcv_plogi_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2180 void *arg, uint32_t evt)
2181 {
2182 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *)arg;
2183 struct ls_rjt stat;
2184
2185 memset(&stat, 0, sizeof(struct ls_rjt));
2186 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
2187 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
2188 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
2189 return ndlp->nlp_state;
2190 }
2191
2192 static uint32_t
2193 lpfc_rcv_prli_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2194 void *arg, uint32_t evt)
2195 {
2196 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *)arg;
2197 struct ls_rjt stat;
2198
2199 memset(&stat, 0, sizeof(struct ls_rjt));
2200 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
2201 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
2202 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
2203 return ndlp->nlp_state;
2204 }
2205
2206 static uint32_t
2207 lpfc_rcv_logo_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2208 void *arg, uint32_t evt)
2209 {
2210 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2211 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *)arg;
2212
2213 spin_lock_irq(shost->host_lock);
2214 ndlp->nlp_flag |= NLP_LOGO_ACC;
2215 spin_unlock_irq(shost->host_lock);
2216 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
2217 return ndlp->nlp_state;
2218 }
2219
2220 static uint32_t
2221 lpfc_rcv_padisc_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2222 void *arg, uint32_t evt)
2223 {
2224 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *)arg;
2225 struct ls_rjt stat;
2226
2227 memset(&stat, 0, sizeof(struct ls_rjt));
2228 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
2229 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
2230 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
2231 return ndlp->nlp_state;
2232 }
2233
2234 static uint32_t
2235 lpfc_rcv_prlo_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2236 void *arg, uint32_t evt)
2237 {
2238 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *)arg;
2239 struct ls_rjt stat;
2240
2241 memset(&stat, 0, sizeof(struct ls_rjt));
2242 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
2243 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
2244 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
2245 return ndlp->nlp_state;
2246 }
2247
2248 static uint32_t
2249 lpfc_cmpl_logo_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2250 void *arg, uint32_t evt)
2251 {
2252 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2253
2254 ndlp->nlp_prev_state = NLP_STE_LOGO_ISSUE;
2255 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
2256 spin_lock_irq(shost->host_lock);
2257 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
2258 spin_unlock_irq(shost->host_lock);
2259 lpfc_disc_set_adisc(vport, ndlp);
2260 return ndlp->nlp_state;
2261 }
2262
2263 static uint32_t
2264 lpfc_device_rm_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2265 void *arg, uint32_t evt)
2266 {
2267 /*
2268 * DevLoss has timed out and is calling for Device Remove.
2269 * In this case, abort the LOGO and cleanup the ndlp
2270 */
2271
2272 lpfc_unreg_rpi(vport, ndlp);
2273 /* software abort outstanding PLOGI */
2274 lpfc_els_abort(vport->phba, ndlp);
2275 lpfc_drop_node(vport, ndlp);
2276 return NLP_STE_FREED_NODE;
2277 }
2278
2279 static uint32_t
2280 lpfc_device_recov_logo_issue(struct lpfc_vport *vport,
2281 struct lpfc_nodelist *ndlp,
2282 void *arg, uint32_t evt)
2283 {
2284 /*
2285 * Device Recovery events have no meaning for a node with a LOGO
2286 * outstanding. The LOGO has to complete first and handle the
2287 * node from that point.
2288 */
2289 return ndlp->nlp_state;
2290 }
2291
2292 static uint32_t
2293 lpfc_rcv_plogi_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2294 void *arg, uint32_t evt)
2295 {
2296 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2297
2298 lpfc_rcv_plogi(vport, ndlp, cmdiocb);
2299 return ndlp->nlp_state;
2300 }
2301
2302 static uint32_t
2303 lpfc_rcv_prli_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2304 void *arg, uint32_t evt)
2305 {
2306 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2307
2308 if (!lpfc_rcv_prli_support_check(vport, ndlp, cmdiocb))
2309 return ndlp->nlp_state;
2310
2311 lpfc_rcv_prli(vport, ndlp, cmdiocb);
2312 lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
2313 return ndlp->nlp_state;
2314 }
2315
2316 static uint32_t
2317 lpfc_rcv_logo_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2318 void *arg, uint32_t evt)
2319 {
2320 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2321
2322 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
2323 return ndlp->nlp_state;
2324 }
2325
2326 static uint32_t
2327 lpfc_rcv_padisc_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2328 void *arg, uint32_t evt)
2329 {
2330 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2331
2332 lpfc_rcv_padisc(vport, ndlp, cmdiocb);
2333 return ndlp->nlp_state;
2334 }
2335
2336 static uint32_t
2337 lpfc_rcv_prlo_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2338 void *arg, uint32_t evt)
2339 {
2340 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2341
2342 lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
2343 return ndlp->nlp_state;
2344 }
2345
2346 static uint32_t
2347 lpfc_device_recov_unmap_node(struct lpfc_vport *vport,
2348 struct lpfc_nodelist *ndlp,
2349 void *arg,
2350 uint32_t evt)
2351 {
2352 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2353
2354 ndlp->nlp_prev_state = NLP_STE_UNMAPPED_NODE;
2355 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
2356 spin_lock_irq(shost->host_lock);
2357 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
2358 ndlp->nlp_fc4_type &= ~(NLP_FC4_FCP | NLP_FC4_NVME);
2359 spin_unlock_irq(shost->host_lock);
2360 lpfc_disc_set_adisc(vport, ndlp);
2361
2362 return ndlp->nlp_state;
2363 }
2364
2365 static uint32_t
2366 lpfc_rcv_plogi_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2367 void *arg, uint32_t evt)
2368 {
2369 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2370
2371 lpfc_rcv_plogi(vport, ndlp, cmdiocb);
2372 return ndlp->nlp_state;
2373 }
2374
2375 static uint32_t
2376 lpfc_rcv_prli_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2377 void *arg, uint32_t evt)
2378 {
2379 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2380
2381 if (!lpfc_rcv_prli_support_check(vport, ndlp, cmdiocb))
2382 return ndlp->nlp_state;
2383 lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
2384 return ndlp->nlp_state;
2385 }
2386
2387 static uint32_t
2388 lpfc_rcv_logo_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2389 void *arg, uint32_t evt)
2390 {
2391 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2392
2393 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
2394 return ndlp->nlp_state;
2395 }
2396
2397 static uint32_t
2398 lpfc_rcv_padisc_mapped_node(struct lpfc_vport *vport,
2399 struct lpfc_nodelist *ndlp,
2400 void *arg, uint32_t evt)
2401 {
2402 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2403
2404 lpfc_rcv_padisc(vport, ndlp, cmdiocb);
2405 return ndlp->nlp_state;
2406 }
2407
2408 static uint32_t
2409 lpfc_rcv_prlo_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2410 void *arg, uint32_t evt)
2411 {
2412 struct lpfc_hba *phba = vport->phba;
2413 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2414
2415 /* flush the target */
2416 lpfc_sli_abort_iocb(vport, &phba->sli.sli3_ring[LPFC_FCP_RING],
2417 ndlp->nlp_sid, 0, LPFC_CTX_TGT);
2418
2419 /* Treat like rcv logo */
2420 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_PRLO);
2421 return ndlp->nlp_state;
2422 }
2423
2424 static uint32_t
2425 lpfc_device_recov_mapped_node(struct lpfc_vport *vport,
2426 struct lpfc_nodelist *ndlp,
2427 void *arg,
2428 uint32_t evt)
2429 {
2430 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2431
2432 ndlp->nlp_prev_state = NLP_STE_MAPPED_NODE;
2433 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
2434 spin_lock_irq(shost->host_lock);
2435 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
2436 ndlp->nlp_fc4_type &= ~(NLP_FC4_FCP | NLP_FC4_NVME);
2437 spin_unlock_irq(shost->host_lock);
2438 lpfc_disc_set_adisc(vport, ndlp);
2439 return ndlp->nlp_state;
2440 }
2441
2442 static uint32_t
2443 lpfc_rcv_plogi_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2444 void *arg, uint32_t evt)
2445 {
2446 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2447 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2448
2449 /* Ignore PLOGI if we have an outstanding LOGO */
2450 if (ndlp->nlp_flag & (NLP_LOGO_SND | NLP_LOGO_ACC))
2451 return ndlp->nlp_state;
2452 if (lpfc_rcv_plogi(vport, ndlp, cmdiocb)) {
2453 lpfc_cancel_retry_delay_tmo(vport, ndlp);
2454 spin_lock_irq(shost->host_lock);
2455 ndlp->nlp_flag &= ~(NLP_NPR_ADISC | NLP_NPR_2B_DISC);
2456 spin_unlock_irq(shost->host_lock);
2457 } else if (!(ndlp->nlp_flag & NLP_NPR_2B_DISC)) {
2458 /* send PLOGI immediately, move to PLOGI issue state */
2459 if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) {
2460 ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
2461 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
2462 lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
2463 }
2464 }
2465 return ndlp->nlp_state;
2466 }
2467
2468 static uint32_t
2469 lpfc_rcv_prli_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2470 void *arg, uint32_t evt)
2471 {
2472 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2473 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2474 struct ls_rjt stat;
2475
2476 memset(&stat, 0, sizeof (struct ls_rjt));
2477 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
2478 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
2479 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
2480
2481 if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) {
2482 if (ndlp->nlp_flag & NLP_NPR_ADISC) {
2483 spin_lock_irq(shost->host_lock);
2484 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
2485 ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
2486 spin_unlock_irq(shost->host_lock);
2487 lpfc_nlp_set_state(vport, ndlp, NLP_STE_ADISC_ISSUE);
2488 lpfc_issue_els_adisc(vport, ndlp, 0);
2489 } else {
2490 ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
2491 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
2492 lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
2493 }
2494 }
2495 return ndlp->nlp_state;
2496 }
2497
2498 static uint32_t
2499 lpfc_rcv_logo_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2500 void *arg, uint32_t evt)
2501 {
2502 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2503
2504 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
2505 return ndlp->nlp_state;
2506 }
2507
2508 static uint32_t
2509 lpfc_rcv_padisc_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2510 void *arg, uint32_t evt)
2511 {
2512 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2513
2514 lpfc_rcv_padisc(vport, ndlp, cmdiocb);
2515 /*
2516 * Do not start discovery if discovery is about to start
2517 * or discovery in progress for this node. Starting discovery
2518 * here will affect the counting of discovery threads.
2519 */
2520 if (!(ndlp->nlp_flag & NLP_DELAY_TMO) &&
2521 !(ndlp->nlp_flag & NLP_NPR_2B_DISC)) {
2522 if (ndlp->nlp_flag & NLP_NPR_ADISC) {
2523 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
2524 ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
2525 lpfc_nlp_set_state(vport, ndlp, NLP_STE_ADISC_ISSUE);
2526 lpfc_issue_els_adisc(vport, ndlp, 0);
2527 } else {
2528 ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
2529 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
2530 lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
2531 }
2532 }
2533 return ndlp->nlp_state;
2534 }
2535
2536 static uint32_t
2537 lpfc_rcv_prlo_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2538 void *arg, uint32_t evt)
2539 {
2540 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2541 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2542
2543 spin_lock_irq(shost->host_lock);
2544 ndlp->nlp_flag |= NLP_LOGO_ACC;
2545 spin_unlock_irq(shost->host_lock);
2546
2547 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
2548
2549 if ((ndlp->nlp_flag & NLP_DELAY_TMO) == 0) {
2550 mod_timer(&ndlp->nlp_delayfunc,
2551 jiffies + msecs_to_jiffies(1000 * 1));
2552 spin_lock_irq(shost->host_lock);
2553 ndlp->nlp_flag |= NLP_DELAY_TMO;
2554 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
2555 spin_unlock_irq(shost->host_lock);
2556 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
2557 } else {
2558 spin_lock_irq(shost->host_lock);
2559 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
2560 spin_unlock_irq(shost->host_lock);
2561 }
2562 return ndlp->nlp_state;
2563 }
2564
2565 static uint32_t
2566 lpfc_cmpl_plogi_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2567 void *arg, uint32_t evt)
2568 {
2569 struct lpfc_iocbq *cmdiocb, *rspiocb;
2570 IOCB_t *irsp;
2571 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2572
2573 cmdiocb = (struct lpfc_iocbq *) arg;
2574 rspiocb = cmdiocb->context_un.rsp_iocb;
2575
2576 irsp = &rspiocb->iocb;
2577 if (irsp->ulpStatus) {
2578 spin_lock_irq(shost->host_lock);
2579 ndlp->nlp_flag |= NLP_DEFER_RM;
2580 spin_unlock_irq(shost->host_lock);
2581 return NLP_STE_FREED_NODE;
2582 }
2583 return ndlp->nlp_state;
2584 }
2585
2586 static uint32_t
2587 lpfc_cmpl_prli_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2588 void *arg, uint32_t evt)
2589 {
2590 struct lpfc_iocbq *cmdiocb, *rspiocb;
2591 IOCB_t *irsp;
2592
2593 cmdiocb = (struct lpfc_iocbq *) arg;
2594 rspiocb = cmdiocb->context_un.rsp_iocb;
2595
2596 irsp = &rspiocb->iocb;
2597 if (irsp->ulpStatus && (ndlp->nlp_flag & NLP_NODEV_REMOVE)) {
2598 lpfc_drop_node(vport, ndlp);
2599 return NLP_STE_FREED_NODE;
2600 }
2601 return ndlp->nlp_state;
2602 }
2603
2604 static uint32_t
2605 lpfc_cmpl_logo_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2606 void *arg, uint32_t evt)
2607 {
2608 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2609
2610 /* For the fabric port just clear the fc flags. */
2611 if (ndlp->nlp_DID == Fabric_DID) {
2612 spin_lock_irq(shost->host_lock);
2613 vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP);
2614 spin_unlock_irq(shost->host_lock);
2615 }
2616 lpfc_unreg_rpi(vport, ndlp);
2617 return ndlp->nlp_state;
2618 }
2619
2620 static uint32_t
2621 lpfc_cmpl_adisc_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2622 void *arg, uint32_t evt)
2623 {
2624 struct lpfc_iocbq *cmdiocb, *rspiocb;
2625 IOCB_t *irsp;
2626
2627 cmdiocb = (struct lpfc_iocbq *) arg;
2628 rspiocb = cmdiocb->context_un.rsp_iocb;
2629
2630 irsp = &rspiocb->iocb;
2631 if (irsp->ulpStatus && (ndlp->nlp_flag & NLP_NODEV_REMOVE)) {
2632 lpfc_drop_node(vport, ndlp);
2633 return NLP_STE_FREED_NODE;
2634 }
2635 return ndlp->nlp_state;
2636 }
2637
2638 static uint32_t
2639 lpfc_cmpl_reglogin_npr_node(struct lpfc_vport *vport,
2640 struct lpfc_nodelist *ndlp,
2641 void *arg, uint32_t evt)
2642 {
2643 LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg;
2644 MAILBOX_t *mb = &pmb->u.mb;
2645
2646 if (!mb->mbxStatus) {
2647 /* SLI4 ports have preallocated logical rpis. */
2648 if (vport->phba->sli_rev < LPFC_SLI_REV4)
2649 ndlp->nlp_rpi = mb->un.varWords[0];
2650 ndlp->nlp_flag |= NLP_RPI_REGISTERED;
2651 if (ndlp->nlp_flag & NLP_LOGO_ACC) {
2652 lpfc_unreg_rpi(vport, ndlp);
2653 }
2654 } else {
2655 if (ndlp->nlp_flag & NLP_NODEV_REMOVE) {
2656 lpfc_drop_node(vport, ndlp);
2657 return NLP_STE_FREED_NODE;
2658 }
2659 }
2660 return ndlp->nlp_state;
2661 }
2662
2663 static uint32_t
2664 lpfc_device_rm_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2665 void *arg, uint32_t evt)
2666 {
2667 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2668
2669 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
2670 spin_lock_irq(shost->host_lock);
2671 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
2672 spin_unlock_irq(shost->host_lock);
2673 return ndlp->nlp_state;
2674 }
2675 lpfc_drop_node(vport, ndlp);
2676 return NLP_STE_FREED_NODE;
2677 }
2678
2679 static uint32_t
2680 lpfc_device_recov_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2681 void *arg, uint32_t evt)
2682 {
2683 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2684
2685 /* Don't do anything that will mess up processing of the
2686 * previous RSCN.
2687 */
2688 if (vport->fc_flag & FC_RSCN_DEFERRED)
2689 return ndlp->nlp_state;
2690
2691 lpfc_cancel_retry_delay_tmo(vport, ndlp);
2692 spin_lock_irq(shost->host_lock);
2693 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
2694 ndlp->nlp_fc4_type &= ~(NLP_FC4_FCP | NLP_FC4_NVME);
2695 spin_unlock_irq(shost->host_lock);
2696 return ndlp->nlp_state;
2697 }
2698
2699
2700 /* This next section defines the NPort Discovery State Machine */
2701
2702 /* There are 4 different double linked lists nodelist entries can reside on.
2703 * The plogi list and adisc list are used when Link Up discovery or RSCN
2704 * processing is needed. Each list holds the nodes that we will send PLOGI
2705 * or ADISC on. These lists will keep track of what nodes will be effected
2706 * by an RSCN, or a Link Up (Typically, all nodes are effected on Link Up).
2707 * The unmapped_list will contain all nodes that we have successfully logged
2708 * into at the Fibre Channel level. The mapped_list will contain all nodes
2709 * that are mapped FCP targets.
2710 */
2711 /*
2712 * The bind list is a list of undiscovered (potentially non-existent) nodes
2713 * that we have saved binding information on. This information is used when
2714 * nodes transition from the unmapped to the mapped list.
2715 */
2716 /* For UNUSED_NODE state, the node has just been allocated .
2717 * For PLOGI_ISSUE and REG_LOGIN_ISSUE, the node is on
2718 * the PLOGI list. For REG_LOGIN_COMPL, the node is taken off the PLOGI list
2719 * and put on the unmapped list. For ADISC processing, the node is taken off
2720 * the ADISC list and placed on either the mapped or unmapped list (depending
2721 * on its previous state). Once on the unmapped list, a PRLI is issued and the
2722 * state changed to PRLI_ISSUE. When the PRLI completion occurs, the state is
2723 * changed to UNMAPPED_NODE. If the completion indicates a mapped
2724 * node, the node is taken off the unmapped list. The binding list is checked
2725 * for a valid binding, or a binding is automatically assigned. If binding
2726 * assignment is unsuccessful, the node is left on the unmapped list. If
2727 * binding assignment is successful, the associated binding list entry (if
2728 * any) is removed, and the node is placed on the mapped list.
2729 */
2730 /*
2731 * For a Link Down, all nodes on the ADISC, PLOGI, unmapped or mapped
2732 * lists will receive a DEVICE_RECOVERY event. If the linkdown or devloss timers
2733 * expire, all effected nodes will receive a DEVICE_RM event.
2734 */
2735 /*
2736 * For a Link Up or RSCN, all nodes will move from the mapped / unmapped lists
2737 * to either the ADISC or PLOGI list. After a Nameserver query or ALPA loopmap
2738 * check, additional nodes may be added or removed (via DEVICE_RM) to / from
2739 * the PLOGI or ADISC lists. Once the PLOGI and ADISC lists are populated,
2740 * we will first process the ADISC list. 32 entries are processed initially and
2741 * ADISC is initited for each one. Completions / Events for each node are
2742 * funnelled thru the state machine. As each node finishes ADISC processing, it
2743 * starts ADISC for any nodes waiting for ADISC processing. If no nodes are
2744 * waiting, and the ADISC list count is identically 0, then we are done. For
2745 * Link Up discovery, since all nodes on the PLOGI list are UNREG_LOGIN'ed, we
2746 * can issue a CLEAR_LA and reenable Link Events. Next we will process the PLOGI
2747 * list. 32 entries are processed initially and PLOGI is initited for each one.
2748 * Completions / Events for each node are funnelled thru the state machine. As
2749 * each node finishes PLOGI processing, it starts PLOGI for any nodes waiting
2750 * for PLOGI processing. If no nodes are waiting, and the PLOGI list count is
2751 * indentically 0, then we are done. We have now completed discovery / RSCN
2752 * handling. Upon completion, ALL nodes should be on either the mapped or
2753 * unmapped lists.
2754 */
2755
2756 static uint32_t (*lpfc_disc_action[NLP_STE_MAX_STATE * NLP_EVT_MAX_EVENT])
2757 (struct lpfc_vport *, struct lpfc_nodelist *, void *, uint32_t) = {
2758 /* Action routine Event Current State */
2759 lpfc_rcv_plogi_unused_node, /* RCV_PLOGI UNUSED_NODE */
2760 lpfc_rcv_els_unused_node, /* RCV_PRLI */
2761 lpfc_rcv_logo_unused_node, /* RCV_LOGO */
2762 lpfc_rcv_els_unused_node, /* RCV_ADISC */
2763 lpfc_rcv_els_unused_node, /* RCV_PDISC */
2764 lpfc_rcv_els_unused_node, /* RCV_PRLO */
2765 lpfc_disc_illegal, /* CMPL_PLOGI */
2766 lpfc_disc_illegal, /* CMPL_PRLI */
2767 lpfc_cmpl_logo_unused_node, /* CMPL_LOGO */
2768 lpfc_disc_illegal, /* CMPL_ADISC */
2769 lpfc_disc_illegal, /* CMPL_REG_LOGIN */
2770 lpfc_device_rm_unused_node, /* DEVICE_RM */
2771 lpfc_device_recov_unused_node, /* DEVICE_RECOVERY */
2772
2773 lpfc_rcv_plogi_plogi_issue, /* RCV_PLOGI PLOGI_ISSUE */
2774 lpfc_rcv_prli_plogi_issue, /* RCV_PRLI */
2775 lpfc_rcv_logo_plogi_issue, /* RCV_LOGO */
2776 lpfc_rcv_els_plogi_issue, /* RCV_ADISC */
2777 lpfc_rcv_els_plogi_issue, /* RCV_PDISC */
2778 lpfc_rcv_els_plogi_issue, /* RCV_PRLO */
2779 lpfc_cmpl_plogi_plogi_issue, /* CMPL_PLOGI */
2780 lpfc_disc_illegal, /* CMPL_PRLI */
2781 lpfc_cmpl_logo_plogi_issue, /* CMPL_LOGO */
2782 lpfc_disc_illegal, /* CMPL_ADISC */
2783 lpfc_cmpl_reglogin_plogi_issue,/* CMPL_REG_LOGIN */
2784 lpfc_device_rm_plogi_issue, /* DEVICE_RM */
2785 lpfc_device_recov_plogi_issue, /* DEVICE_RECOVERY */
2786
2787 lpfc_rcv_plogi_adisc_issue, /* RCV_PLOGI ADISC_ISSUE */
2788 lpfc_rcv_prli_adisc_issue, /* RCV_PRLI */
2789 lpfc_rcv_logo_adisc_issue, /* RCV_LOGO */
2790 lpfc_rcv_padisc_adisc_issue, /* RCV_ADISC */
2791 lpfc_rcv_padisc_adisc_issue, /* RCV_PDISC */
2792 lpfc_rcv_prlo_adisc_issue, /* RCV_PRLO */
2793 lpfc_disc_illegal, /* CMPL_PLOGI */
2794 lpfc_disc_illegal, /* CMPL_PRLI */
2795 lpfc_disc_illegal, /* CMPL_LOGO */
2796 lpfc_cmpl_adisc_adisc_issue, /* CMPL_ADISC */
2797 lpfc_disc_illegal, /* CMPL_REG_LOGIN */
2798 lpfc_device_rm_adisc_issue, /* DEVICE_RM */
2799 lpfc_device_recov_adisc_issue, /* DEVICE_RECOVERY */
2800
2801 lpfc_rcv_plogi_reglogin_issue, /* RCV_PLOGI REG_LOGIN_ISSUE */
2802 lpfc_rcv_prli_reglogin_issue, /* RCV_PLOGI */
2803 lpfc_rcv_logo_reglogin_issue, /* RCV_LOGO */
2804 lpfc_rcv_padisc_reglogin_issue, /* RCV_ADISC */
2805 lpfc_rcv_padisc_reglogin_issue, /* RCV_PDISC */
2806 lpfc_rcv_prlo_reglogin_issue, /* RCV_PRLO */
2807 lpfc_cmpl_plogi_illegal, /* CMPL_PLOGI */
2808 lpfc_disc_illegal, /* CMPL_PRLI */
2809 lpfc_disc_illegal, /* CMPL_LOGO */
2810 lpfc_disc_illegal, /* CMPL_ADISC */
2811 lpfc_cmpl_reglogin_reglogin_issue,/* CMPL_REG_LOGIN */
2812 lpfc_device_rm_reglogin_issue, /* DEVICE_RM */
2813 lpfc_device_recov_reglogin_issue,/* DEVICE_RECOVERY */
2814
2815 lpfc_rcv_plogi_prli_issue, /* RCV_PLOGI PRLI_ISSUE */
2816 lpfc_rcv_prli_prli_issue, /* RCV_PRLI */
2817 lpfc_rcv_logo_prli_issue, /* RCV_LOGO */
2818 lpfc_rcv_padisc_prli_issue, /* RCV_ADISC */
2819 lpfc_rcv_padisc_prli_issue, /* RCV_PDISC */
2820 lpfc_rcv_prlo_prli_issue, /* RCV_PRLO */
2821 lpfc_cmpl_plogi_illegal, /* CMPL_PLOGI */
2822 lpfc_cmpl_prli_prli_issue, /* CMPL_PRLI */
2823 lpfc_disc_illegal, /* CMPL_LOGO */
2824 lpfc_disc_illegal, /* CMPL_ADISC */
2825 lpfc_disc_illegal, /* CMPL_REG_LOGIN */
2826 lpfc_device_rm_prli_issue, /* DEVICE_RM */
2827 lpfc_device_recov_prli_issue, /* DEVICE_RECOVERY */
2828
2829 lpfc_rcv_plogi_logo_issue, /* RCV_PLOGI LOGO_ISSUE */
2830 lpfc_rcv_prli_logo_issue, /* RCV_PRLI */
2831 lpfc_rcv_logo_logo_issue, /* RCV_LOGO */
2832 lpfc_rcv_padisc_logo_issue, /* RCV_ADISC */
2833 lpfc_rcv_padisc_logo_issue, /* RCV_PDISC */
2834 lpfc_rcv_prlo_logo_issue, /* RCV_PRLO */
2835 lpfc_cmpl_plogi_illegal, /* CMPL_PLOGI */
2836 lpfc_disc_illegal, /* CMPL_PRLI */
2837 lpfc_cmpl_logo_logo_issue, /* CMPL_LOGO */
2838 lpfc_disc_illegal, /* CMPL_ADISC */
2839 lpfc_disc_illegal, /* CMPL_REG_LOGIN */
2840 lpfc_device_rm_logo_issue, /* DEVICE_RM */
2841 lpfc_device_recov_logo_issue, /* DEVICE_RECOVERY */
2842
2843 lpfc_rcv_plogi_unmap_node, /* RCV_PLOGI UNMAPPED_NODE */
2844 lpfc_rcv_prli_unmap_node, /* RCV_PRLI */
2845 lpfc_rcv_logo_unmap_node, /* RCV_LOGO */
2846 lpfc_rcv_padisc_unmap_node, /* RCV_ADISC */
2847 lpfc_rcv_padisc_unmap_node, /* RCV_PDISC */
2848 lpfc_rcv_prlo_unmap_node, /* RCV_PRLO */
2849 lpfc_disc_illegal, /* CMPL_PLOGI */
2850 lpfc_disc_illegal, /* CMPL_PRLI */
2851 lpfc_disc_illegal, /* CMPL_LOGO */
2852 lpfc_disc_illegal, /* CMPL_ADISC */
2853 lpfc_disc_illegal, /* CMPL_REG_LOGIN */
2854 lpfc_disc_illegal, /* DEVICE_RM */
2855 lpfc_device_recov_unmap_node, /* DEVICE_RECOVERY */
2856
2857 lpfc_rcv_plogi_mapped_node, /* RCV_PLOGI MAPPED_NODE */
2858 lpfc_rcv_prli_mapped_node, /* RCV_PRLI */
2859 lpfc_rcv_logo_mapped_node, /* RCV_LOGO */
2860 lpfc_rcv_padisc_mapped_node, /* RCV_ADISC */
2861 lpfc_rcv_padisc_mapped_node, /* RCV_PDISC */
2862 lpfc_rcv_prlo_mapped_node, /* RCV_PRLO */
2863 lpfc_disc_illegal, /* CMPL_PLOGI */
2864 lpfc_disc_illegal, /* CMPL_PRLI */
2865 lpfc_disc_illegal, /* CMPL_LOGO */
2866 lpfc_disc_illegal, /* CMPL_ADISC */
2867 lpfc_disc_illegal, /* CMPL_REG_LOGIN */
2868 lpfc_disc_illegal, /* DEVICE_RM */
2869 lpfc_device_recov_mapped_node, /* DEVICE_RECOVERY */
2870
2871 lpfc_rcv_plogi_npr_node, /* RCV_PLOGI NPR_NODE */
2872 lpfc_rcv_prli_npr_node, /* RCV_PRLI */
2873 lpfc_rcv_logo_npr_node, /* RCV_LOGO */
2874 lpfc_rcv_padisc_npr_node, /* RCV_ADISC */
2875 lpfc_rcv_padisc_npr_node, /* RCV_PDISC */
2876 lpfc_rcv_prlo_npr_node, /* RCV_PRLO */
2877 lpfc_cmpl_plogi_npr_node, /* CMPL_PLOGI */
2878 lpfc_cmpl_prli_npr_node, /* CMPL_PRLI */
2879 lpfc_cmpl_logo_npr_node, /* CMPL_LOGO */
2880 lpfc_cmpl_adisc_npr_node, /* CMPL_ADISC */
2881 lpfc_cmpl_reglogin_npr_node, /* CMPL_REG_LOGIN */
2882 lpfc_device_rm_npr_node, /* DEVICE_RM */
2883 lpfc_device_recov_npr_node, /* DEVICE_RECOVERY */
2884 };
2885
2886 int
2887 lpfc_disc_state_machine(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2888 void *arg, uint32_t evt)
2889 {
2890 uint32_t cur_state, rc;
2891 uint32_t(*func) (struct lpfc_vport *, struct lpfc_nodelist *, void *,
2892 uint32_t);
2893 uint32_t got_ndlp = 0;
2894
2895 if (lpfc_nlp_get(ndlp))
2896 got_ndlp = 1;
2897
2898 cur_state = ndlp->nlp_state;
2899
2900 /* DSM in event <evt> on NPort <nlp_DID> in state <cur_state> */
2901 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
2902 "0211 DSM in event x%x on NPort x%x in "
2903 "state %d rpi x%x Data: x%x x%x\n",
2904 evt, ndlp->nlp_DID, cur_state, ndlp->nlp_rpi,
2905 ndlp->nlp_flag, ndlp->nlp_fc4_type);
2906
2907 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_DSM,
2908 "DSM in: evt:%d ste:%d did:x%x",
2909 evt, cur_state, ndlp->nlp_DID);
2910
2911 func = lpfc_disc_action[(cur_state * NLP_EVT_MAX_EVENT) + evt];
2912 rc = (func) (vport, ndlp, arg, evt);
2913
2914 /* DSM out state <rc> on NPort <nlp_DID> */
2915 if (got_ndlp) {
2916 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
2917 "0212 DSM out state %d on NPort x%x "
2918 "rpi x%x Data: x%x\n",
2919 rc, ndlp->nlp_DID, ndlp->nlp_rpi, ndlp->nlp_flag);
2920
2921 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_DSM,
2922 "DSM out: ste:%d did:x%x flg:x%x",
2923 rc, ndlp->nlp_DID, ndlp->nlp_flag);
2924 /* Decrement the ndlp reference count held for this function */
2925 lpfc_nlp_put(ndlp);
2926 } else {
2927 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
2928 "0213 DSM out state %d on NPort free\n", rc);
2929
2930 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_DSM,
2931 "DSM out: ste:%d did:x%x flg:x%x",
2932 rc, 0, 0);
2933 }
2934
2935 return rc;
2936 }
Linux with added FPC-III support