1 /*******************************************************************
2 * This file is part of the Emulex Linux Device Driver for *
3 * Fibre Channel Host Bus Adapters. *
4 * Copyright (C) 2017-2018 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
lpfc_check_adisc(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,struct lpfc_name * nn,struct lpfc_name * pn)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
lpfc_check_sparm(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,struct serv_parm * sp,uint32_t class,int flogi)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 *
lpfc_check_elscmpl_iocb(struct lpfc_hba * phba,struct lpfc_iocbq * cmdiocb,struct lpfc_iocbq * rspiocb)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
lpfc_els_abort(struct lpfc_hba * phba,struct lpfc_nodelist * ndlp)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
lpfc_rcv_plogi(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,struct lpfc_iocbq * cmdiocb)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 case NLP_STE_REG_LOGIN_ISSUE:
364 case NLP_STE_PRLI_ISSUE:
365 case NLP_STE_UNMAPPED_NODE:
366 case NLP_STE_MAPPED_NODE:
367 /* For initiators, lpfc_plogi_confirm_nport skips fabric did.
368 * For target mode, execute implicit logo.
369 * Fabric nodes go into NPR.
370 */
371 if (!(ndlp->nlp_type & NLP_FABRIC) &&
372 !(phba->nvmet_support)) {
373 lpfc_els_rsp_acc(vport, ELS_CMD_PLOGI, cmdiocb,
374 ndlp, NULL);
375 return 1;
376 }
377 if (nlp_portwwn != 0 &&
378 nlp_portwwn != wwn_to_u64(sp->portName.u.wwn))
379 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
380 "0143 PLOGI recv'd from DID: x%x "
381 "WWPN changed: old %llx new %llx\n",
382 ndlp->nlp_DID,
383 (unsigned long long)nlp_portwwn,
384 (unsigned long long)
385 wwn_to_u64(sp->portName.u.wwn));
386
387 ndlp->nlp_prev_state = ndlp->nlp_state;
388 /* rport needs to be unregistered first */
389 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
390 break;
391 }
392
393 ndlp->nlp_type &= ~(NLP_FCP_TARGET | NLP_FCP_INITIATOR);
394 ndlp->nlp_type &= ~(NLP_NVME_TARGET | NLP_NVME_INITIATOR);
395 ndlp->nlp_fcp_info &= ~NLP_FCP_2_DEVICE;
396 ndlp->nlp_flag &= ~NLP_FIRSTBURST;
397
398 /* Check for Nport to NPort pt2pt protocol */
399 if ((vport->fc_flag & FC_PT2PT) &&
400 !(vport->fc_flag & FC_PT2PT_PLOGI)) {
401 /* rcv'ed PLOGI decides what our NPortId will be */
402 vport->fc_myDID = icmd->un.rcvels.parmRo;
403
404 ed_tov = be32_to_cpu(sp->cmn.e_d_tov);
405 if (sp->cmn.edtovResolution) {
406 /* E_D_TOV ticks are in nanoseconds */
407 ed_tov = (phba->fc_edtov + 999999) / 1000000;
408 }
409
410 /*
411 * For pt-to-pt, use the larger EDTOV
412 * RATOV = 2 * EDTOV
413 */
414 if (ed_tov > phba->fc_edtov)
415 phba->fc_edtov = ed_tov;
416 phba->fc_ratov = (2 * phba->fc_edtov) / 1000;
417
418 memcpy(&phba->fc_fabparam, sp, sizeof(struct serv_parm));
419
420 /* Issue config_link / reg_vfi to account for updated TOV's */
421
422 if (phba->sli_rev == LPFC_SLI_REV4)
423 lpfc_issue_reg_vfi(vport);
424 else {
425 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
426 if (mbox == NULL)
427 goto out;
428 lpfc_config_link(phba, mbox);
429 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
430 mbox->vport = vport;
431 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
432 if (rc == MBX_NOT_FINISHED) {
433 mempool_free(mbox, phba->mbox_mem_pool);
434 goto out;
435 }
436 }
437
438 lpfc_can_disctmo(vport);
439 }
440
441 ndlp->nlp_flag &= ~NLP_SUPPRESS_RSP;
442 if ((phba->sli.sli_flag & LPFC_SLI_SUPPRESS_RSP) &&
443 sp->cmn.valid_vendor_ver_level) {
444 vid = be32_to_cpu(sp->un.vv.vid);
445 flag = be32_to_cpu(sp->un.vv.flags);
446 if ((vid == LPFC_VV_EMLX_ID) && (flag & LPFC_VV_SUPPRESS_RSP))
447 ndlp->nlp_flag |= NLP_SUPPRESS_RSP;
448 }
449
450 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
451 if (!mbox)
452 goto out;
453
454 /* Registering an existing RPI behaves differently for SLI3 vs SLI4 */
455 if (phba->sli_rev == LPFC_SLI_REV4)
456 lpfc_unreg_rpi(vport, ndlp);
457
458 rc = lpfc_reg_rpi(phba, vport->vpi, icmd->un.rcvels.remoteID,
459 (uint8_t *) sp, mbox, ndlp->nlp_rpi);
460 if (rc) {
461 mempool_free(mbox, phba->mbox_mem_pool);
462 goto out;
463 }
464
465 /* ACC PLOGI rsp command needs to execute first,
466 * queue this mbox command to be processed later.
467 */
468 mbox->mbox_cmpl = lpfc_mbx_cmpl_reg_login;
469 /*
470 * mbox->context2 = lpfc_nlp_get(ndlp) deferred until mailbox
471 * command issued in lpfc_cmpl_els_acc().
472 */
473 mbox->vport = vport;
474 spin_lock_irq(shost->host_lock);
475 ndlp->nlp_flag |= (NLP_ACC_REGLOGIN | NLP_RCV_PLOGI);
476 spin_unlock_irq(shost->host_lock);
477
478 /*
479 * If there is an outstanding PLOGI issued, abort it before
480 * sending ACC rsp for received PLOGI. If pending plogi
481 * is not canceled here, the plogi will be rejected by
482 * remote port and will be retried. On a configuration with
483 * single discovery thread, this will cause a huge delay in
484 * discovery. Also this will cause multiple state machines
485 * running in parallel for this node.
486 * This only applies to a fabric environment.
487 */
488 if ((ndlp->nlp_state == NLP_STE_PLOGI_ISSUE) &&
489 (vport->fc_flag & FC_FABRIC)) {
490 /* software abort outstanding PLOGI */
491 lpfc_els_abort(phba, ndlp);
492 }
493
494 if ((vport->port_type == LPFC_NPIV_PORT &&
495 vport->cfg_restrict_login)) {
496
497 /* In order to preserve RPIs, we want to cleanup
498 * the default RPI the firmware created to rcv
499 * this ELS request. The only way to do this is
500 * to register, then unregister the RPI.
501 */
502 spin_lock_irq(shost->host_lock);
503 ndlp->nlp_flag |= NLP_RM_DFLT_RPI;
504 spin_unlock_irq(shost->host_lock);
505 stat.un.b.lsRjtRsnCode = LSRJT_INVALID_CMD;
506 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
507 rc = lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb,
508 ndlp, mbox);
509 if (rc)
510 mempool_free(mbox, phba->mbox_mem_pool);
511 return 1;
512 }
513 rc = lpfc_els_rsp_acc(vport, ELS_CMD_PLOGI, cmdiocb, ndlp, mbox);
514 if (rc)
515 mempool_free(mbox, phba->mbox_mem_pool);
516 return 1;
517 out:
518 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
519 stat.un.b.lsRjtRsnCodeExp = LSEXP_OUT_OF_RESOURCE;
520 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
521 return 0;
522 }
523
524 /**
525 * lpfc_mbx_cmpl_resume_rpi - Resume RPI completion routine
526 * @phba: pointer to lpfc hba data structure.
527 * @mboxq: pointer to mailbox object
528 *
529 * This routine is invoked to issue a completion to a rcv'ed
530 * ADISC or PDISC after the paused RPI has been resumed.
531 **/
532 static void
lpfc_mbx_cmpl_resume_rpi(struct lpfc_hba * phba,LPFC_MBOXQ_t * mboxq)533 lpfc_mbx_cmpl_resume_rpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
534 {
535 struct lpfc_vport *vport;
536 struct lpfc_iocbq *elsiocb;
537 struct lpfc_nodelist *ndlp;
538 uint32_t cmd;
539
540 elsiocb = (struct lpfc_iocbq *)mboxq->context1;
541 ndlp = (struct lpfc_nodelist *) mboxq->context2;
542 vport = mboxq->vport;
543 cmd = elsiocb->drvrTimeout;
544
545 if (cmd == ELS_CMD_ADISC) {
546 lpfc_els_rsp_adisc_acc(vport, elsiocb, ndlp);
547 } else {
548 lpfc_els_rsp_acc(vport, ELS_CMD_PLOGI, elsiocb,
549 ndlp, NULL);
550 }
551 kfree(elsiocb);
552 mempool_free(mboxq, phba->mbox_mem_pool);
553 }
554
555 static int
lpfc_rcv_padisc(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,struct lpfc_iocbq * cmdiocb)556 lpfc_rcv_padisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
557 struct lpfc_iocbq *cmdiocb)
558 {
559 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
560 struct lpfc_iocbq *elsiocb;
561 struct lpfc_dmabuf *pcmd;
562 struct serv_parm *sp;
563 struct lpfc_name *pnn, *ppn;
564 struct ls_rjt stat;
565 ADISC *ap;
566 IOCB_t *icmd;
567 uint32_t *lp;
568 uint32_t cmd;
569
570 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
571 lp = (uint32_t *) pcmd->virt;
572
573 cmd = *lp++;
574 if (cmd == ELS_CMD_ADISC) {
575 ap = (ADISC *) lp;
576 pnn = (struct lpfc_name *) & ap->nodeName;
577 ppn = (struct lpfc_name *) & ap->portName;
578 } else {
579 sp = (struct serv_parm *) lp;
580 pnn = (struct lpfc_name *) & sp->nodeName;
581 ppn = (struct lpfc_name *) & sp->portName;
582 }
583
584 icmd = &cmdiocb->iocb;
585 if (icmd->ulpStatus == 0 && lpfc_check_adisc(vport, ndlp, pnn, ppn)) {
586
587 /*
588 * As soon as we send ACC, the remote NPort can
589 * start sending us data. Thus, for SLI4 we must
590 * resume the RPI before the ACC goes out.
591 */
592 if (vport->phba->sli_rev == LPFC_SLI_REV4) {
593 elsiocb = kmalloc(sizeof(struct lpfc_iocbq),
594 GFP_KERNEL);
595 if (elsiocb) {
596
597 /* Save info from cmd IOCB used in rsp */
598 memcpy((uint8_t *)elsiocb, (uint8_t *)cmdiocb,
599 sizeof(struct lpfc_iocbq));
600
601 /* Save the ELS cmd */
602 elsiocb->drvrTimeout = cmd;
603
604 lpfc_sli4_resume_rpi(ndlp,
605 lpfc_mbx_cmpl_resume_rpi, elsiocb);
606 goto out;
607 }
608 }
609
610 if (cmd == ELS_CMD_ADISC) {
611 lpfc_els_rsp_adisc_acc(vport, cmdiocb, ndlp);
612 } else {
613 lpfc_els_rsp_acc(vport, ELS_CMD_PLOGI, cmdiocb,
614 ndlp, NULL);
615 }
616 out:
617 /* If we are authenticated, move to the proper state */
618 if (ndlp->nlp_type & NLP_FCP_TARGET)
619 lpfc_nlp_set_state(vport, ndlp, NLP_STE_MAPPED_NODE);
620 else
621 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
622
623 return 1;
624 }
625 /* Reject this request because invalid parameters */
626 stat.un.b.lsRjtRsvd0 = 0;
627 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
628 stat.un.b.lsRjtRsnCodeExp = LSEXP_SPARM_OPTIONS;
629 stat.un.b.vendorUnique = 0;
630 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
631
632 /* 1 sec timeout */
633 mod_timer(&ndlp->nlp_delayfunc, jiffies + msecs_to_jiffies(1000));
634
635 spin_lock_irq(shost->host_lock);
636 ndlp->nlp_flag |= NLP_DELAY_TMO;
637 spin_unlock_irq(shost->host_lock);
638 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
639 ndlp->nlp_prev_state = ndlp->nlp_state;
640 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
641 return 0;
642 }
643
644 static int
lpfc_rcv_logo(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,struct lpfc_iocbq * cmdiocb,uint32_t els_cmd)645 lpfc_rcv_logo(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
646 struct lpfc_iocbq *cmdiocb, uint32_t els_cmd)
647 {
648 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
649 struct lpfc_hba *phba = vport->phba;
650 struct lpfc_vport **vports;
651 int i, active_vlink_present = 0 ;
652
653 /* Put ndlp in NPR state with 1 sec timeout for plogi, ACC logo */
654 /* Only call LOGO ACC for first LOGO, this avoids sending unnecessary
655 * PLOGIs during LOGO storms from a device.
656 */
657 spin_lock_irq(shost->host_lock);
658 ndlp->nlp_flag |= NLP_LOGO_ACC;
659 spin_unlock_irq(shost->host_lock);
660 if (els_cmd == ELS_CMD_PRLO)
661 lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
662 else
663 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
664 if (ndlp->nlp_DID == Fabric_DID) {
665 if (vport->port_state <= LPFC_FDISC)
666 goto out;
667 lpfc_linkdown_port(vport);
668 spin_lock_irq(shost->host_lock);
669 vport->fc_flag |= FC_VPORT_LOGO_RCVD;
670 spin_unlock_irq(shost->host_lock);
671 vports = lpfc_create_vport_work_array(phba);
672 if (vports) {
673 for (i = 0; i <= phba->max_vports && vports[i] != NULL;
674 i++) {
675 if ((!(vports[i]->fc_flag &
676 FC_VPORT_LOGO_RCVD)) &&
677 (vports[i]->port_state > LPFC_FDISC)) {
678 active_vlink_present = 1;
679 break;
680 }
681 }
682 lpfc_destroy_vport_work_array(phba, vports);
683 }
684
685 /*
686 * Don't re-instantiate if vport is marked for deletion.
687 * If we are here first then vport_delete is going to wait
688 * for discovery to complete.
689 */
690 if (!(vport->load_flag & FC_UNLOADING) &&
691 active_vlink_present) {
692 /*
693 * If there are other active VLinks present,
694 * re-instantiate the Vlink using FDISC.
695 */
696 mod_timer(&ndlp->nlp_delayfunc,
697 jiffies + msecs_to_jiffies(1000));
698 spin_lock_irq(shost->host_lock);
699 ndlp->nlp_flag |= NLP_DELAY_TMO;
700 spin_unlock_irq(shost->host_lock);
701 ndlp->nlp_last_elscmd = ELS_CMD_FDISC;
702 vport->port_state = LPFC_FDISC;
703 } else {
704 spin_lock_irq(shost->host_lock);
705 phba->pport->fc_flag &= ~FC_LOGO_RCVD_DID_CHNG;
706 spin_unlock_irq(shost->host_lock);
707 lpfc_retry_pport_discovery(phba);
708 }
709 } else if ((!(ndlp->nlp_type & NLP_FABRIC) &&
710 ((ndlp->nlp_type & NLP_FCP_TARGET) ||
711 !(ndlp->nlp_type & NLP_FCP_INITIATOR))) ||
712 (ndlp->nlp_state == NLP_STE_ADISC_ISSUE)) {
713 /* Only try to re-login if this is NOT a Fabric Node */
714 mod_timer(&ndlp->nlp_delayfunc,
715 jiffies + msecs_to_jiffies(1000 * 1));
716 spin_lock_irq(shost->host_lock);
717 ndlp->nlp_flag |= NLP_DELAY_TMO;
718 spin_unlock_irq(shost->host_lock);
719
720 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
721 }
722 out:
723 ndlp->nlp_prev_state = ndlp->nlp_state;
724 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
725
726 spin_lock_irq(shost->host_lock);
727 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
728 spin_unlock_irq(shost->host_lock);
729 /* The driver has to wait until the ACC completes before it continues
730 * processing the LOGO. The action will resume in
731 * lpfc_cmpl_els_logo_acc routine. Since part of processing includes an
732 * unreg_login, the driver waits so the ACC does not get aborted.
733 */
734 return 0;
735 }
736
737 static uint32_t
lpfc_rcv_prli_support_check(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,struct lpfc_iocbq * cmdiocb)738 lpfc_rcv_prli_support_check(struct lpfc_vport *vport,
739 struct lpfc_nodelist *ndlp,
740 struct lpfc_iocbq *cmdiocb)
741 {
742 struct ls_rjt stat;
743 uint32_t *payload;
744 uint32_t cmd;
745
746 payload = ((struct lpfc_dmabuf *)cmdiocb->context2)->virt;
747 cmd = *payload;
748 if (vport->phba->nvmet_support) {
749 /* Must be a NVME PRLI */
750 if (cmd == ELS_CMD_PRLI)
751 goto out;
752 } else {
753 /* Initiator mode. */
754 if (!vport->nvmei_support && (cmd == ELS_CMD_NVMEPRLI))
755 goto out;
756 }
757 return 1;
758 out:
759 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NVME_DISC,
760 "6115 Rcv PRLI (%x) check failed: ndlp rpi %d "
761 "state x%x flags x%x\n",
762 cmd, ndlp->nlp_rpi, ndlp->nlp_state,
763 ndlp->nlp_flag);
764 memset(&stat, 0, sizeof(struct ls_rjt));
765 stat.un.b.lsRjtRsnCode = LSRJT_CMD_UNSUPPORTED;
766 stat.un.b.lsRjtRsnCodeExp = LSEXP_REQ_UNSUPPORTED;
767 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb,
768 ndlp, NULL);
769 return 0;
770 }
771
772 static void
lpfc_rcv_prli(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,struct lpfc_iocbq * cmdiocb)773 lpfc_rcv_prli(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
774 struct lpfc_iocbq *cmdiocb)
775 {
776 struct lpfc_hba *phba = vport->phba;
777 struct lpfc_dmabuf *pcmd;
778 uint32_t *lp;
779 PRLI *npr;
780 struct fc_rport *rport = ndlp->rport;
781 u32 roles;
782
783 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
784 lp = (uint32_t *) pcmd->virt;
785 npr = (PRLI *) ((uint8_t *) lp + sizeof (uint32_t));
786
787 if ((npr->prliType == PRLI_FCP_TYPE) ||
788 (npr->prliType == PRLI_NVME_TYPE)) {
789 if (npr->initiatorFunc) {
790 if (npr->prliType == PRLI_FCP_TYPE)
791 ndlp->nlp_type |= NLP_FCP_INITIATOR;
792 if (npr->prliType == PRLI_NVME_TYPE)
793 ndlp->nlp_type |= NLP_NVME_INITIATOR;
794 }
795 if (npr->targetFunc) {
796 if (npr->prliType == PRLI_FCP_TYPE)
797 ndlp->nlp_type |= NLP_FCP_TARGET;
798 if (npr->prliType == PRLI_NVME_TYPE)
799 ndlp->nlp_type |= NLP_NVME_TARGET;
800 if (npr->writeXferRdyDis)
801 ndlp->nlp_flag |= NLP_FIRSTBURST;
802 }
803 if (npr->Retry)
804 ndlp->nlp_fcp_info |= NLP_FCP_2_DEVICE;
805
806 /* If this driver is in nvme target mode, set the ndlp's fc4
807 * type to NVME provided the PRLI response claims NVME FC4
808 * type. Target mode does not issue gft_id so doesn't get
809 * the fc4 type set until now.
810 */
811 if (phba->nvmet_support && (npr->prliType == PRLI_NVME_TYPE)) {
812 ndlp->nlp_fc4_type |= NLP_FC4_NVME;
813 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
814 }
815 if (npr->prliType == PRLI_FCP_TYPE)
816 ndlp->nlp_fc4_type |= NLP_FC4_FCP;
817 }
818 if (rport) {
819 /* We need to update the rport role values */
820 roles = FC_RPORT_ROLE_UNKNOWN;
821 if (ndlp->nlp_type & NLP_FCP_INITIATOR)
822 roles |= FC_RPORT_ROLE_FCP_INITIATOR;
823 if (ndlp->nlp_type & NLP_FCP_TARGET)
824 roles |= FC_RPORT_ROLE_FCP_TARGET;
825
826 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
827 "rport rolechg: role:x%x did:x%x flg:x%x",
828 roles, ndlp->nlp_DID, ndlp->nlp_flag);
829
830 if (phba->cfg_enable_fc4_type != LPFC_ENABLE_NVME)
831 fc_remote_port_rolechg(rport, roles);
832 }
833 }
834
835 static uint32_t
lpfc_disc_set_adisc(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp)836 lpfc_disc_set_adisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
837 {
838 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
839
840 if (!(ndlp->nlp_flag & NLP_RPI_REGISTERED)) {
841 spin_lock_irq(shost->host_lock);
842 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
843 spin_unlock_irq(shost->host_lock);
844 return 0;
845 }
846
847 if (!(vport->fc_flag & FC_PT2PT)) {
848 /* Check config parameter use-adisc or FCP-2 */
849 if (vport->cfg_use_adisc && ((vport->fc_flag & FC_RSCN_MODE) ||
850 ((ndlp->nlp_fcp_info & NLP_FCP_2_DEVICE) &&
851 (ndlp->nlp_type & NLP_FCP_TARGET)))) {
852 spin_lock_irq(shost->host_lock);
853 ndlp->nlp_flag |= NLP_NPR_ADISC;
854 spin_unlock_irq(shost->host_lock);
855 return 1;
856 }
857 }
858
859 spin_lock_irq(shost->host_lock);
860 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
861 spin_unlock_irq(shost->host_lock);
862 lpfc_unreg_rpi(vport, ndlp);
863 return 0;
864 }
865
866 /**
867 * lpfc_release_rpi - Release a RPI by issuing unreg_login mailbox cmd.
868 * @phba : Pointer to lpfc_hba structure.
869 * @vport: Pointer to lpfc_vport structure.
870 * @rpi : rpi to be release.
871 *
872 * This function will send a unreg_login mailbox command to the firmware
873 * to release a rpi.
874 **/
875 void
lpfc_release_rpi(struct lpfc_hba * phba,struct lpfc_vport * vport,uint16_t rpi)876 lpfc_release_rpi(struct lpfc_hba *phba,
877 struct lpfc_vport *vport,
878 uint16_t rpi)
879 {
880 LPFC_MBOXQ_t *pmb;
881 int rc;
882
883 pmb = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool,
884 GFP_KERNEL);
885 if (!pmb)
886 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
887 "2796 mailbox memory allocation failed \n");
888 else {
889 lpfc_unreg_login(phba, vport->vpi, rpi, pmb);
890 pmb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
891 rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);
892 if (rc == MBX_NOT_FINISHED)
893 mempool_free(pmb, phba->mbox_mem_pool);
894 }
895 }
896
897 static uint32_t
lpfc_disc_illegal(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)898 lpfc_disc_illegal(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
899 void *arg, uint32_t evt)
900 {
901 struct lpfc_hba *phba;
902 LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg;
903 uint16_t rpi;
904
905 phba = vport->phba;
906 /* Release the RPI if reglogin completing */
907 if (!(phba->pport->load_flag & FC_UNLOADING) &&
908 (evt == NLP_EVT_CMPL_REG_LOGIN) &&
909 (!pmb->u.mb.mbxStatus)) {
910 rpi = pmb->u.mb.un.varWords[0];
911 lpfc_release_rpi(phba, vport, rpi);
912 }
913 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
914 "0271 Illegal State Transition: node x%x "
915 "event x%x, state x%x Data: x%x x%x\n",
916 ndlp->nlp_DID, evt, ndlp->nlp_state, ndlp->nlp_rpi,
917 ndlp->nlp_flag);
918 return ndlp->nlp_state;
919 }
920
921 static uint32_t
lpfc_cmpl_plogi_illegal(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)922 lpfc_cmpl_plogi_illegal(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
923 void *arg, uint32_t evt)
924 {
925 /* This transition is only legal if we previously
926 * rcv'ed a PLOGI. Since we don't want 2 discovery threads
927 * working on the same NPortID, do nothing for this thread
928 * to stop it.
929 */
930 if (!(ndlp->nlp_flag & NLP_RCV_PLOGI)) {
931 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
932 "0272 Illegal State Transition: node x%x "
933 "event x%x, state x%x Data: x%x x%x\n",
934 ndlp->nlp_DID, evt, ndlp->nlp_state, ndlp->nlp_rpi,
935 ndlp->nlp_flag);
936 }
937 return ndlp->nlp_state;
938 }
939
940 /* Start of Discovery State Machine routines */
941
942 static uint32_t
lpfc_rcv_plogi_unused_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)943 lpfc_rcv_plogi_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
944 void *arg, uint32_t evt)
945 {
946 struct lpfc_iocbq *cmdiocb;
947
948 cmdiocb = (struct lpfc_iocbq *) arg;
949
950 if (lpfc_rcv_plogi(vport, ndlp, cmdiocb)) {
951 return ndlp->nlp_state;
952 }
953 return NLP_STE_FREED_NODE;
954 }
955
956 static uint32_t
lpfc_rcv_els_unused_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)957 lpfc_rcv_els_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
958 void *arg, uint32_t evt)
959 {
960 lpfc_issue_els_logo(vport, ndlp, 0);
961 return ndlp->nlp_state;
962 }
963
964 static uint32_t
lpfc_rcv_logo_unused_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)965 lpfc_rcv_logo_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
966 void *arg, uint32_t evt)
967 {
968 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
969 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
970
971 spin_lock_irq(shost->host_lock);
972 ndlp->nlp_flag |= NLP_LOGO_ACC;
973 spin_unlock_irq(shost->host_lock);
974 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
975
976 return ndlp->nlp_state;
977 }
978
979 static uint32_t
lpfc_cmpl_logo_unused_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)980 lpfc_cmpl_logo_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
981 void *arg, uint32_t evt)
982 {
983 return NLP_STE_FREED_NODE;
984 }
985
986 static uint32_t
lpfc_device_rm_unused_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)987 lpfc_device_rm_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
988 void *arg, uint32_t evt)
989 {
990 return NLP_STE_FREED_NODE;
991 }
992
993 static uint32_t
lpfc_device_recov_unused_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)994 lpfc_device_recov_unused_node(struct lpfc_vport *vport,
995 struct lpfc_nodelist *ndlp,
996 void *arg, uint32_t evt)
997 {
998 return ndlp->nlp_state;
999 }
1000
1001 static uint32_t
lpfc_rcv_plogi_plogi_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1002 lpfc_rcv_plogi_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1003 void *arg, uint32_t evt)
1004 {
1005 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1006 struct lpfc_hba *phba = vport->phba;
1007 struct lpfc_iocbq *cmdiocb = arg;
1008 struct lpfc_dmabuf *pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
1009 uint32_t *lp = (uint32_t *) pcmd->virt;
1010 struct serv_parm *sp = (struct serv_parm *) (lp + 1);
1011 struct ls_rjt stat;
1012 int port_cmp;
1013
1014 memset(&stat, 0, sizeof (struct ls_rjt));
1015
1016 /* For a PLOGI, we only accept if our portname is less
1017 * than the remote portname.
1018 */
1019 phba->fc_stat.elsLogiCol++;
1020 port_cmp = memcmp(&vport->fc_portname, &sp->portName,
1021 sizeof(struct lpfc_name));
1022
1023 if (port_cmp >= 0) {
1024 /* Reject this request because the remote node will accept
1025 ours */
1026 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
1027 stat.un.b.lsRjtRsnCodeExp = LSEXP_CMD_IN_PROGRESS;
1028 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
1029 NULL);
1030 } else {
1031 if (lpfc_rcv_plogi(vport, ndlp, cmdiocb) &&
1032 (ndlp->nlp_flag & NLP_NPR_2B_DISC) &&
1033 (vport->num_disc_nodes)) {
1034 spin_lock_irq(shost->host_lock);
1035 ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
1036 spin_unlock_irq(shost->host_lock);
1037 /* Check if there are more PLOGIs to be sent */
1038 lpfc_more_plogi(vport);
1039 if (vport->num_disc_nodes == 0) {
1040 spin_lock_irq(shost->host_lock);
1041 vport->fc_flag &= ~FC_NDISC_ACTIVE;
1042 spin_unlock_irq(shost->host_lock);
1043 lpfc_can_disctmo(vport);
1044 lpfc_end_rscn(vport);
1045 }
1046 }
1047 } /* If our portname was less */
1048
1049 return ndlp->nlp_state;
1050 }
1051
1052 static uint32_t
lpfc_rcv_prli_plogi_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1053 lpfc_rcv_prli_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1054 void *arg, uint32_t evt)
1055 {
1056 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1057 struct ls_rjt stat;
1058
1059 memset(&stat, 0, sizeof (struct ls_rjt));
1060 stat.un.b.lsRjtRsnCode = LSRJT_LOGICAL_BSY;
1061 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
1062 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
1063 return ndlp->nlp_state;
1064 }
1065
1066 static uint32_t
lpfc_rcv_logo_plogi_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1067 lpfc_rcv_logo_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1068 void *arg, uint32_t evt)
1069 {
1070 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1071
1072 /* Retrieve RPI from LOGO IOCB. RPI is used for CMD_ABORT_XRI_CN */
1073 if (vport->phba->sli_rev == LPFC_SLI_REV3)
1074 ndlp->nlp_rpi = cmdiocb->iocb.ulpIoTag;
1075 /* software abort outstanding PLOGI */
1076 lpfc_els_abort(vport->phba, ndlp);
1077
1078 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1079 return ndlp->nlp_state;
1080 }
1081
1082 static uint32_t
lpfc_rcv_els_plogi_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1083 lpfc_rcv_els_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1084 void *arg, uint32_t evt)
1085 {
1086 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1087 struct lpfc_hba *phba = vport->phba;
1088 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1089
1090 /* software abort outstanding PLOGI */
1091 lpfc_els_abort(phba, ndlp);
1092
1093 if (evt == NLP_EVT_RCV_LOGO) {
1094 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
1095 } else {
1096 lpfc_issue_els_logo(vport, ndlp, 0);
1097 }
1098
1099 /* Put ndlp in npr state set plogi timer for 1 sec */
1100 mod_timer(&ndlp->nlp_delayfunc, jiffies + msecs_to_jiffies(1000 * 1));
1101 spin_lock_irq(shost->host_lock);
1102 ndlp->nlp_flag |= NLP_DELAY_TMO;
1103 spin_unlock_irq(shost->host_lock);
1104 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
1105 ndlp->nlp_prev_state = NLP_STE_PLOGI_ISSUE;
1106 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1107
1108 return ndlp->nlp_state;
1109 }
1110
1111 static uint32_t
lpfc_cmpl_plogi_plogi_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1112 lpfc_cmpl_plogi_plogi_issue(struct lpfc_vport *vport,
1113 struct lpfc_nodelist *ndlp,
1114 void *arg,
1115 uint32_t evt)
1116 {
1117 struct lpfc_hba *phba = vport->phba;
1118 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1119 struct lpfc_iocbq *cmdiocb, *rspiocb;
1120 struct lpfc_dmabuf *pcmd, *prsp, *mp;
1121 uint32_t *lp;
1122 uint32_t vid, flag;
1123 IOCB_t *irsp;
1124 struct serv_parm *sp;
1125 uint32_t ed_tov;
1126 LPFC_MBOXQ_t *mbox;
1127 int rc;
1128
1129 cmdiocb = (struct lpfc_iocbq *) arg;
1130 rspiocb = cmdiocb->context_un.rsp_iocb;
1131
1132 if (ndlp->nlp_flag & NLP_ACC_REGLOGIN) {
1133 /* Recovery from PLOGI collision logic */
1134 return ndlp->nlp_state;
1135 }
1136
1137 irsp = &rspiocb->iocb;
1138
1139 if (irsp->ulpStatus)
1140 goto out;
1141
1142 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
1143
1144 prsp = list_get_first(&pcmd->list, struct lpfc_dmabuf, list);
1145 if (!prsp)
1146 goto out;
1147
1148 lp = (uint32_t *) prsp->virt;
1149 sp = (struct serv_parm *) ((uint8_t *) lp + sizeof (uint32_t));
1150
1151 /* Some switches have FDMI servers returning 0 for WWN */
1152 if ((ndlp->nlp_DID != FDMI_DID) &&
1153 (wwn_to_u64(sp->portName.u.wwn) == 0 ||
1154 wwn_to_u64(sp->nodeName.u.wwn) == 0)) {
1155 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
1156 "0142 PLOGI RSP: Invalid WWN.\n");
1157 goto out;
1158 }
1159 if (!lpfc_check_sparm(vport, ndlp, sp, CLASS3, 0))
1160 goto out;
1161 /* PLOGI chkparm OK */
1162 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
1163 "0121 PLOGI chkparm OK Data: x%x x%x x%x x%x\n",
1164 ndlp->nlp_DID, ndlp->nlp_state,
1165 ndlp->nlp_flag, ndlp->nlp_rpi);
1166 if (vport->cfg_fcp_class == 2 && (sp->cls2.classValid))
1167 ndlp->nlp_fcp_info |= CLASS2;
1168 else
1169 ndlp->nlp_fcp_info |= CLASS3;
1170
1171 ndlp->nlp_class_sup = 0;
1172 if (sp->cls1.classValid)
1173 ndlp->nlp_class_sup |= FC_COS_CLASS1;
1174 if (sp->cls2.classValid)
1175 ndlp->nlp_class_sup |= FC_COS_CLASS2;
1176 if (sp->cls3.classValid)
1177 ndlp->nlp_class_sup |= FC_COS_CLASS3;
1178 if (sp->cls4.classValid)
1179 ndlp->nlp_class_sup |= FC_COS_CLASS4;
1180 ndlp->nlp_maxframe =
1181 ((sp->cmn.bbRcvSizeMsb & 0x0F) << 8) | sp->cmn.bbRcvSizeLsb;
1182
1183 if ((vport->fc_flag & FC_PT2PT) &&
1184 (vport->fc_flag & FC_PT2PT_PLOGI)) {
1185 ed_tov = be32_to_cpu(sp->cmn.e_d_tov);
1186 if (sp->cmn.edtovResolution) {
1187 /* E_D_TOV ticks are in nanoseconds */
1188 ed_tov = (phba->fc_edtov + 999999) / 1000000;
1189 }
1190
1191 ndlp->nlp_flag &= ~NLP_SUPPRESS_RSP;
1192 if ((phba->sli.sli_flag & LPFC_SLI_SUPPRESS_RSP) &&
1193 sp->cmn.valid_vendor_ver_level) {
1194 vid = be32_to_cpu(sp->un.vv.vid);
1195 flag = be32_to_cpu(sp->un.vv.flags);
1196 if ((vid == LPFC_VV_EMLX_ID) &&
1197 (flag & LPFC_VV_SUPPRESS_RSP))
1198 ndlp->nlp_flag |= NLP_SUPPRESS_RSP;
1199 }
1200
1201 /*
1202 * Use the larger EDTOV
1203 * RATOV = 2 * EDTOV for pt-to-pt
1204 */
1205 if (ed_tov > phba->fc_edtov)
1206 phba->fc_edtov = ed_tov;
1207 phba->fc_ratov = (2 * phba->fc_edtov) / 1000;
1208
1209 memcpy(&phba->fc_fabparam, sp, sizeof(struct serv_parm));
1210
1211 /* Issue config_link / reg_vfi to account for updated TOV's */
1212 if (phba->sli_rev == LPFC_SLI_REV4) {
1213 lpfc_issue_reg_vfi(vport);
1214 } else {
1215 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1216 if (!mbox) {
1217 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
1218 "0133 PLOGI: no memory "
1219 "for config_link "
1220 "Data: x%x x%x x%x x%x\n",
1221 ndlp->nlp_DID, ndlp->nlp_state,
1222 ndlp->nlp_flag, ndlp->nlp_rpi);
1223 goto out;
1224 }
1225
1226 lpfc_config_link(phba, mbox);
1227
1228 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
1229 mbox->vport = vport;
1230 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
1231 if (rc == MBX_NOT_FINISHED) {
1232 mempool_free(mbox, phba->mbox_mem_pool);
1233 goto out;
1234 }
1235 }
1236 }
1237
1238 lpfc_unreg_rpi(vport, ndlp);
1239
1240 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1241 if (!mbox) {
1242 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
1243 "0018 PLOGI: no memory for reg_login "
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 if (lpfc_reg_rpi(phba, vport->vpi, irsp->un.elsreq64.remoteID,
1251 (uint8_t *) sp, mbox, ndlp->nlp_rpi) == 0) {
1252 switch (ndlp->nlp_DID) {
1253 case NameServer_DID:
1254 mbox->mbox_cmpl = lpfc_mbx_cmpl_ns_reg_login;
1255 break;
1256 case FDMI_DID:
1257 mbox->mbox_cmpl = lpfc_mbx_cmpl_fdmi_reg_login;
1258 break;
1259 default:
1260 ndlp->nlp_flag |= NLP_REG_LOGIN_SEND;
1261 mbox->mbox_cmpl = lpfc_mbx_cmpl_reg_login;
1262 }
1263 mbox->context2 = lpfc_nlp_get(ndlp);
1264 mbox->vport = vport;
1265 if (lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT)
1266 != MBX_NOT_FINISHED) {
1267 lpfc_nlp_set_state(vport, ndlp,
1268 NLP_STE_REG_LOGIN_ISSUE);
1269 return ndlp->nlp_state;
1270 }
1271 if (ndlp->nlp_flag & NLP_REG_LOGIN_SEND)
1272 ndlp->nlp_flag &= ~NLP_REG_LOGIN_SEND;
1273 /* decrement node reference count to the failed mbox
1274 * command
1275 */
1276 lpfc_nlp_put(ndlp);
1277 mp = (struct lpfc_dmabuf *) mbox->context1;
1278 lpfc_mbuf_free(phba, mp->virt, mp->phys);
1279 kfree(mp);
1280 mempool_free(mbox, phba->mbox_mem_pool);
1281
1282 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
1283 "0134 PLOGI: cannot issue reg_login "
1284 "Data: x%x x%x x%x x%x\n",
1285 ndlp->nlp_DID, ndlp->nlp_state,
1286 ndlp->nlp_flag, ndlp->nlp_rpi);
1287 } else {
1288 mempool_free(mbox, phba->mbox_mem_pool);
1289
1290 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
1291 "0135 PLOGI: cannot format reg_login "
1292 "Data: x%x x%x x%x x%x\n",
1293 ndlp->nlp_DID, ndlp->nlp_state,
1294 ndlp->nlp_flag, ndlp->nlp_rpi);
1295 }
1296
1297
1298 out:
1299 if (ndlp->nlp_DID == NameServer_DID) {
1300 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
1301 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
1302 "0261 Cannot Register NameServer login\n");
1303 }
1304
1305 /*
1306 ** In case the node reference counter does not go to zero, ensure that
1307 ** the stale state for the node is not processed.
1308 */
1309
1310 ndlp->nlp_prev_state = ndlp->nlp_state;
1311 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1312 spin_lock_irq(shost->host_lock);
1313 ndlp->nlp_flag |= NLP_DEFER_RM;
1314 spin_unlock_irq(shost->host_lock);
1315 return NLP_STE_FREED_NODE;
1316 }
1317
1318 static uint32_t
lpfc_cmpl_logo_plogi_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1319 lpfc_cmpl_logo_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1320 void *arg, uint32_t evt)
1321 {
1322 return ndlp->nlp_state;
1323 }
1324
1325 static uint32_t
lpfc_cmpl_reglogin_plogi_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1326 lpfc_cmpl_reglogin_plogi_issue(struct lpfc_vport *vport,
1327 struct lpfc_nodelist *ndlp, void *arg, uint32_t evt)
1328 {
1329 struct lpfc_hba *phba;
1330 LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg;
1331 MAILBOX_t *mb = &pmb->u.mb;
1332 uint16_t rpi;
1333
1334 phba = vport->phba;
1335 /* Release the RPI */
1336 if (!(phba->pport->load_flag & FC_UNLOADING) &&
1337 !mb->mbxStatus) {
1338 rpi = pmb->u.mb.un.varWords[0];
1339 lpfc_release_rpi(phba, vport, rpi);
1340 }
1341 return ndlp->nlp_state;
1342 }
1343
1344 static uint32_t
lpfc_device_rm_plogi_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1345 lpfc_device_rm_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1346 void *arg, uint32_t evt)
1347 {
1348 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1349
1350 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1351 spin_lock_irq(shost->host_lock);
1352 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1353 spin_unlock_irq(shost->host_lock);
1354 return ndlp->nlp_state;
1355 } else {
1356 /* software abort outstanding PLOGI */
1357 lpfc_els_abort(vport->phba, ndlp);
1358
1359 lpfc_drop_node(vport, ndlp);
1360 return NLP_STE_FREED_NODE;
1361 }
1362 }
1363
1364 static uint32_t
lpfc_device_recov_plogi_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1365 lpfc_device_recov_plogi_issue(struct lpfc_vport *vport,
1366 struct lpfc_nodelist *ndlp,
1367 void *arg,
1368 uint32_t evt)
1369 {
1370 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1371 struct lpfc_hba *phba = vport->phba;
1372
1373 /* Don't do anything that will mess up processing of the
1374 * previous RSCN.
1375 */
1376 if (vport->fc_flag & FC_RSCN_DEFERRED)
1377 return ndlp->nlp_state;
1378
1379 /* software abort outstanding PLOGI */
1380 lpfc_els_abort(phba, ndlp);
1381
1382 ndlp->nlp_prev_state = NLP_STE_PLOGI_ISSUE;
1383 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1384 spin_lock_irq(shost->host_lock);
1385 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1386 spin_unlock_irq(shost->host_lock);
1387
1388 return ndlp->nlp_state;
1389 }
1390
1391 static uint32_t
lpfc_rcv_plogi_adisc_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1392 lpfc_rcv_plogi_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1393 void *arg, uint32_t evt)
1394 {
1395 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1396 struct lpfc_hba *phba = vport->phba;
1397 struct lpfc_iocbq *cmdiocb;
1398
1399 /* software abort outstanding ADISC */
1400 lpfc_els_abort(phba, ndlp);
1401
1402 cmdiocb = (struct lpfc_iocbq *) arg;
1403
1404 if (lpfc_rcv_plogi(vport, ndlp, cmdiocb)) {
1405 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1406 spin_lock_irq(shost->host_lock);
1407 ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
1408 spin_unlock_irq(shost->host_lock);
1409 if (vport->num_disc_nodes)
1410 lpfc_more_adisc(vport);
1411 }
1412 return ndlp->nlp_state;
1413 }
1414 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1415 lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
1416 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
1417
1418 return ndlp->nlp_state;
1419 }
1420
1421 static uint32_t
lpfc_rcv_prli_adisc_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1422 lpfc_rcv_prli_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1423 void *arg, uint32_t evt)
1424 {
1425 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1426
1427 if (lpfc_rcv_prli_support_check(vport, ndlp, cmdiocb))
1428 lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1429 return ndlp->nlp_state;
1430 }
1431
1432 static uint32_t
lpfc_rcv_logo_adisc_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1433 lpfc_rcv_logo_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1434 void *arg, uint32_t evt)
1435 {
1436 struct lpfc_hba *phba = vport->phba;
1437 struct lpfc_iocbq *cmdiocb;
1438
1439 cmdiocb = (struct lpfc_iocbq *) arg;
1440
1441 /* software abort outstanding ADISC */
1442 lpfc_els_abort(phba, ndlp);
1443
1444 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1445 return ndlp->nlp_state;
1446 }
1447
1448 static uint32_t
lpfc_rcv_padisc_adisc_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1449 lpfc_rcv_padisc_adisc_issue(struct lpfc_vport *vport,
1450 struct lpfc_nodelist *ndlp,
1451 void *arg, uint32_t evt)
1452 {
1453 struct lpfc_iocbq *cmdiocb;
1454
1455 cmdiocb = (struct lpfc_iocbq *) arg;
1456
1457 lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1458 return ndlp->nlp_state;
1459 }
1460
1461 static uint32_t
lpfc_rcv_prlo_adisc_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1462 lpfc_rcv_prlo_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1463 void *arg, uint32_t evt)
1464 {
1465 struct lpfc_iocbq *cmdiocb;
1466
1467 cmdiocb = (struct lpfc_iocbq *) arg;
1468
1469 /* Treat like rcv logo */
1470 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_PRLO);
1471 return ndlp->nlp_state;
1472 }
1473
1474 static uint32_t
lpfc_cmpl_adisc_adisc_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1475 lpfc_cmpl_adisc_adisc_issue(struct lpfc_vport *vport,
1476 struct lpfc_nodelist *ndlp,
1477 void *arg, uint32_t evt)
1478 {
1479 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1480 struct lpfc_hba *phba = vport->phba;
1481 struct lpfc_iocbq *cmdiocb, *rspiocb;
1482 IOCB_t *irsp;
1483 ADISC *ap;
1484 int rc;
1485
1486 cmdiocb = (struct lpfc_iocbq *) arg;
1487 rspiocb = cmdiocb->context_un.rsp_iocb;
1488
1489 ap = (ADISC *)lpfc_check_elscmpl_iocb(phba, cmdiocb, rspiocb);
1490 irsp = &rspiocb->iocb;
1491
1492 if ((irsp->ulpStatus) ||
1493 (!lpfc_check_adisc(vport, ndlp, &ap->nodeName, &ap->portName))) {
1494 /* 1 sec timeout */
1495 mod_timer(&ndlp->nlp_delayfunc,
1496 jiffies + msecs_to_jiffies(1000));
1497 spin_lock_irq(shost->host_lock);
1498 ndlp->nlp_flag |= NLP_DELAY_TMO;
1499 spin_unlock_irq(shost->host_lock);
1500 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
1501
1502 memset(&ndlp->nlp_nodename, 0, sizeof(struct lpfc_name));
1503 memset(&ndlp->nlp_portname, 0, sizeof(struct lpfc_name));
1504
1505 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1506 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1507 lpfc_unreg_rpi(vport, ndlp);
1508 return ndlp->nlp_state;
1509 }
1510
1511 if (phba->sli_rev == LPFC_SLI_REV4) {
1512 rc = lpfc_sli4_resume_rpi(ndlp, NULL, NULL);
1513 if (rc) {
1514 /* Stay in state and retry. */
1515 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1516 return ndlp->nlp_state;
1517 }
1518 }
1519
1520 if (ndlp->nlp_type & NLP_FCP_TARGET) {
1521 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1522 lpfc_nlp_set_state(vport, ndlp, NLP_STE_MAPPED_NODE);
1523 } else {
1524 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1525 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1526 }
1527
1528 return ndlp->nlp_state;
1529 }
1530
1531 static uint32_t
lpfc_device_rm_adisc_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1532 lpfc_device_rm_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1533 void *arg, uint32_t evt)
1534 {
1535 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1536
1537 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1538 spin_lock_irq(shost->host_lock);
1539 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1540 spin_unlock_irq(shost->host_lock);
1541 return ndlp->nlp_state;
1542 } else {
1543 /* software abort outstanding ADISC */
1544 lpfc_els_abort(vport->phba, ndlp);
1545
1546 lpfc_drop_node(vport, ndlp);
1547 return NLP_STE_FREED_NODE;
1548 }
1549 }
1550
1551 static uint32_t
lpfc_device_recov_adisc_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1552 lpfc_device_recov_adisc_issue(struct lpfc_vport *vport,
1553 struct lpfc_nodelist *ndlp,
1554 void *arg,
1555 uint32_t evt)
1556 {
1557 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1558 struct lpfc_hba *phba = vport->phba;
1559
1560 /* Don't do anything that will mess up processing of the
1561 * previous RSCN.
1562 */
1563 if (vport->fc_flag & FC_RSCN_DEFERRED)
1564 return ndlp->nlp_state;
1565
1566 /* software abort outstanding ADISC */
1567 lpfc_els_abort(phba, ndlp);
1568
1569 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1570 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1571 spin_lock_irq(shost->host_lock);
1572 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1573 spin_unlock_irq(shost->host_lock);
1574 lpfc_disc_set_adisc(vport, ndlp);
1575 return ndlp->nlp_state;
1576 }
1577
1578 static uint32_t
lpfc_rcv_plogi_reglogin_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1579 lpfc_rcv_plogi_reglogin_issue(struct lpfc_vport *vport,
1580 struct lpfc_nodelist *ndlp,
1581 void *arg,
1582 uint32_t evt)
1583 {
1584 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1585
1586 lpfc_rcv_plogi(vport, ndlp, cmdiocb);
1587 return ndlp->nlp_state;
1588 }
1589
1590 static uint32_t
lpfc_rcv_prli_reglogin_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1591 lpfc_rcv_prli_reglogin_issue(struct lpfc_vport *vport,
1592 struct lpfc_nodelist *ndlp,
1593 void *arg,
1594 uint32_t evt)
1595 {
1596 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1597 struct ls_rjt stat;
1598
1599 if (!lpfc_rcv_prli_support_check(vport, ndlp, cmdiocb)) {
1600 return ndlp->nlp_state;
1601 }
1602 if (vport->phba->nvmet_support) {
1603 /* NVME Target mode. Handle and respond to the PRLI and
1604 * transition to UNMAPPED provided the RPI has completed
1605 * registration.
1606 */
1607 if (ndlp->nlp_flag & NLP_RPI_REGISTERED) {
1608 lpfc_rcv_prli(vport, ndlp, cmdiocb);
1609 lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1610 } else {
1611 /* RPI registration has not completed. Reject the PRLI
1612 * to prevent an illegal state transition when the
1613 * rpi registration does complete.
1614 */
1615 memset(&stat, 0, sizeof(struct ls_rjt));
1616 stat.un.b.lsRjtRsnCode = LSRJT_LOGICAL_BSY;
1617 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
1618 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb,
1619 ndlp, NULL);
1620 return ndlp->nlp_state;
1621 }
1622 } else {
1623 /* Initiator mode. */
1624 lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1625 }
1626 return ndlp->nlp_state;
1627 }
1628
1629 static uint32_t
lpfc_rcv_logo_reglogin_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1630 lpfc_rcv_logo_reglogin_issue(struct lpfc_vport *vport,
1631 struct lpfc_nodelist *ndlp,
1632 void *arg,
1633 uint32_t evt)
1634 {
1635 struct lpfc_hba *phba = vport->phba;
1636 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1637 LPFC_MBOXQ_t *mb;
1638 LPFC_MBOXQ_t *nextmb;
1639 struct lpfc_dmabuf *mp;
1640
1641 cmdiocb = (struct lpfc_iocbq *) arg;
1642
1643 /* cleanup any ndlp on mbox q waiting for reglogin cmpl */
1644 if ((mb = phba->sli.mbox_active)) {
1645 if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) &&
1646 (ndlp == (struct lpfc_nodelist *) mb->context2)) {
1647 ndlp->nlp_flag &= ~NLP_REG_LOGIN_SEND;
1648 lpfc_nlp_put(ndlp);
1649 mb->context2 = NULL;
1650 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
1651 }
1652 }
1653
1654 spin_lock_irq(&phba->hbalock);
1655 list_for_each_entry_safe(mb, nextmb, &phba->sli.mboxq, list) {
1656 if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) &&
1657 (ndlp == (struct lpfc_nodelist *) mb->context2)) {
1658 mp = (struct lpfc_dmabuf *) (mb->context1);
1659 if (mp) {
1660 __lpfc_mbuf_free(phba, mp->virt, mp->phys);
1661 kfree(mp);
1662 }
1663 ndlp->nlp_flag &= ~NLP_REG_LOGIN_SEND;
1664 lpfc_nlp_put(ndlp);
1665 list_del(&mb->list);
1666 phba->sli.mboxq_cnt--;
1667 mempool_free(mb, phba->mbox_mem_pool);
1668 }
1669 }
1670 spin_unlock_irq(&phba->hbalock);
1671
1672 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1673 return ndlp->nlp_state;
1674 }
1675
1676 static uint32_t
lpfc_rcv_padisc_reglogin_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1677 lpfc_rcv_padisc_reglogin_issue(struct lpfc_vport *vport,
1678 struct lpfc_nodelist *ndlp,
1679 void *arg,
1680 uint32_t evt)
1681 {
1682 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1683
1684 lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1685 return ndlp->nlp_state;
1686 }
1687
1688 static uint32_t
lpfc_rcv_prlo_reglogin_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1689 lpfc_rcv_prlo_reglogin_issue(struct lpfc_vport *vport,
1690 struct lpfc_nodelist *ndlp,
1691 void *arg,
1692 uint32_t evt)
1693 {
1694 struct lpfc_iocbq *cmdiocb;
1695
1696 cmdiocb = (struct lpfc_iocbq *) arg;
1697 lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
1698 return ndlp->nlp_state;
1699 }
1700
1701 static uint32_t
lpfc_cmpl_reglogin_reglogin_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1702 lpfc_cmpl_reglogin_reglogin_issue(struct lpfc_vport *vport,
1703 struct lpfc_nodelist *ndlp,
1704 void *arg,
1705 uint32_t evt)
1706 {
1707 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1708 struct lpfc_hba *phba = vport->phba;
1709 LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg;
1710 MAILBOX_t *mb = &pmb->u.mb;
1711 uint32_t did = mb->un.varWords[1];
1712 int rc = 0;
1713
1714 if (mb->mbxStatus) {
1715 /* RegLogin failed */
1716 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
1717 "0246 RegLogin failed Data: x%x x%x x%x x%x "
1718 "x%x\n",
1719 did, mb->mbxStatus, vport->port_state,
1720 mb->un.varRegLogin.vpi,
1721 mb->un.varRegLogin.rpi);
1722 /*
1723 * If RegLogin failed due to lack of HBA resources do not
1724 * retry discovery.
1725 */
1726 if (mb->mbxStatus == MBXERR_RPI_FULL) {
1727 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1728 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1729 return ndlp->nlp_state;
1730 }
1731
1732 /* Put ndlp in npr state set plogi timer for 1 sec */
1733 mod_timer(&ndlp->nlp_delayfunc,
1734 jiffies + msecs_to_jiffies(1000 * 1));
1735 spin_lock_irq(shost->host_lock);
1736 ndlp->nlp_flag |= NLP_DELAY_TMO;
1737 spin_unlock_irq(shost->host_lock);
1738 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
1739
1740 lpfc_issue_els_logo(vport, ndlp, 0);
1741 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1742 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1743 return ndlp->nlp_state;
1744 }
1745
1746 /* SLI4 ports have preallocated logical rpis. */
1747 if (phba->sli_rev < LPFC_SLI_REV4)
1748 ndlp->nlp_rpi = mb->un.varWords[0];
1749
1750 ndlp->nlp_flag |= NLP_RPI_REGISTERED;
1751
1752 /* Only if we are not a fabric nport do we issue PRLI */
1753 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
1754 "3066 RegLogin Complete on x%x x%x x%x\n",
1755 did, ndlp->nlp_type, ndlp->nlp_fc4_type);
1756 if (!(ndlp->nlp_type & NLP_FABRIC) &&
1757 (phba->nvmet_support == 0)) {
1758 /* The driver supports FCP and NVME concurrently. If the
1759 * ndlp's nlp_fc4_type is still zero, the driver doesn't
1760 * know what PRLI to send yet. Figure that out now and
1761 * call PRLI depending on the outcome.
1762 */
1763 if (vport->fc_flag & FC_PT2PT) {
1764 /* If we are pt2pt, there is no Fabric to determine
1765 * the FC4 type of the remote nport. So if NVME
1766 * is configured try it.
1767 */
1768 ndlp->nlp_fc4_type |= NLP_FC4_FCP;
1769 if ((phba->cfg_enable_fc4_type == LPFC_ENABLE_BOTH) ||
1770 (phba->cfg_enable_fc4_type == LPFC_ENABLE_NVME)) {
1771 ndlp->nlp_fc4_type |= NLP_FC4_NVME;
1772 /* We need to update the localport also */
1773 lpfc_nvme_update_localport(vport);
1774 }
1775
1776 } else if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
1777 ndlp->nlp_fc4_type |= NLP_FC4_FCP;
1778
1779 } else if (ndlp->nlp_fc4_type == 0) {
1780 rc = lpfc_ns_cmd(vport, SLI_CTNS_GFT_ID,
1781 0, ndlp->nlp_DID);
1782 return ndlp->nlp_state;
1783 }
1784
1785 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1786 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PRLI_ISSUE);
1787 lpfc_issue_els_prli(vport, ndlp, 0);
1788 } else {
1789 if ((vport->fc_flag & FC_PT2PT) && phba->nvmet_support)
1790 phba->targetport->port_id = vport->fc_myDID;
1791
1792 /* Only Fabric ports should transition. NVME target
1793 * must complete PRLI.
1794 */
1795 if (ndlp->nlp_type & NLP_FABRIC) {
1796 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1797 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1798 }
1799 }
1800 return ndlp->nlp_state;
1801 }
1802
1803 static uint32_t
lpfc_device_rm_reglogin_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1804 lpfc_device_rm_reglogin_issue(struct lpfc_vport *vport,
1805 struct lpfc_nodelist *ndlp,
1806 void *arg,
1807 uint32_t evt)
1808 {
1809 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1810
1811 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1812 spin_lock_irq(shost->host_lock);
1813 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1814 spin_unlock_irq(shost->host_lock);
1815 return ndlp->nlp_state;
1816 } else {
1817 lpfc_drop_node(vport, ndlp);
1818 return NLP_STE_FREED_NODE;
1819 }
1820 }
1821
1822 static uint32_t
lpfc_device_recov_reglogin_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1823 lpfc_device_recov_reglogin_issue(struct lpfc_vport *vport,
1824 struct lpfc_nodelist *ndlp,
1825 void *arg,
1826 uint32_t evt)
1827 {
1828 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1829
1830 /* Don't do anything that will mess up processing of the
1831 * previous RSCN.
1832 */
1833 if (vport->fc_flag & FC_RSCN_DEFERRED)
1834 return ndlp->nlp_state;
1835
1836 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1837 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1838 spin_lock_irq(shost->host_lock);
1839
1840 /* If we are a target we won't immediately transition into PRLI,
1841 * so if REG_LOGIN already completed we don't need to ignore it.
1842 */
1843 if (!(ndlp->nlp_flag & NLP_RPI_REGISTERED) ||
1844 !vport->phba->nvmet_support)
1845 ndlp->nlp_flag |= NLP_IGNR_REG_CMPL;
1846
1847 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1848 spin_unlock_irq(shost->host_lock);
1849 lpfc_disc_set_adisc(vport, ndlp);
1850 return ndlp->nlp_state;
1851 }
1852
1853 static uint32_t
lpfc_rcv_plogi_prli_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1854 lpfc_rcv_plogi_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1855 void *arg, uint32_t evt)
1856 {
1857 struct lpfc_iocbq *cmdiocb;
1858
1859 cmdiocb = (struct lpfc_iocbq *) arg;
1860
1861 lpfc_rcv_plogi(vport, ndlp, cmdiocb);
1862 return ndlp->nlp_state;
1863 }
1864
1865 static uint32_t
lpfc_rcv_prli_prli_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1866 lpfc_rcv_prli_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1867 void *arg, uint32_t evt)
1868 {
1869 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1870
1871 if (!lpfc_rcv_prli_support_check(vport, ndlp, cmdiocb))
1872 return ndlp->nlp_state;
1873 lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1874 return ndlp->nlp_state;
1875 }
1876
1877 static uint32_t
lpfc_rcv_logo_prli_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1878 lpfc_rcv_logo_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1879 void *arg, uint32_t evt)
1880 {
1881 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1882
1883 /* Software abort outstanding PRLI before sending acc */
1884 lpfc_els_abort(vport->phba, ndlp);
1885
1886 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1887 return ndlp->nlp_state;
1888 }
1889
1890 static uint32_t
lpfc_rcv_padisc_prli_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1891 lpfc_rcv_padisc_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1892 void *arg, uint32_t evt)
1893 {
1894 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1895
1896 lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1897 return ndlp->nlp_state;
1898 }
1899
1900 /* This routine is envoked when we rcv a PRLO request from a nport
1901 * we are logged into. We should send back a PRLO rsp setting the
1902 * appropriate bits.
1903 * NEXT STATE = PRLI_ISSUE
1904 */
1905 static uint32_t
lpfc_rcv_prlo_prli_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1906 lpfc_rcv_prlo_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1907 void *arg, uint32_t evt)
1908 {
1909 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1910
1911 lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
1912 return ndlp->nlp_state;
1913 }
1914
1915 static uint32_t
lpfc_cmpl_prli_prli_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1916 lpfc_cmpl_prli_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1917 void *arg, uint32_t evt)
1918 {
1919 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1920 struct lpfc_iocbq *cmdiocb, *rspiocb;
1921 struct lpfc_hba *phba = vport->phba;
1922 IOCB_t *irsp;
1923 PRLI *npr;
1924 struct lpfc_nvme_prli *nvpr;
1925 void *temp_ptr;
1926
1927 cmdiocb = (struct lpfc_iocbq *) arg;
1928 rspiocb = cmdiocb->context_un.rsp_iocb;
1929
1930 /* A solicited PRLI is either FCP or NVME. The PRLI cmd/rsp
1931 * format is different so NULL the two PRLI types so that the
1932 * driver correctly gets the correct context.
1933 */
1934 npr = NULL;
1935 nvpr = NULL;
1936 temp_ptr = lpfc_check_elscmpl_iocb(phba, cmdiocb, rspiocb);
1937 if (cmdiocb->iocb_flag & LPFC_PRLI_FCP_REQ)
1938 npr = (PRLI *) temp_ptr;
1939 else if (cmdiocb->iocb_flag & LPFC_PRLI_NVME_REQ)
1940 nvpr = (struct lpfc_nvme_prli *) temp_ptr;
1941
1942 irsp = &rspiocb->iocb;
1943 if (irsp->ulpStatus) {
1944 if ((vport->port_type == LPFC_NPIV_PORT) &&
1945 vport->cfg_restrict_login) {
1946 goto out;
1947 }
1948
1949 /* Adjust the nlp_type accordingly if the PRLI failed */
1950 if (npr)
1951 ndlp->nlp_fc4_type &= ~NLP_FC4_FCP;
1952 if (nvpr)
1953 ndlp->nlp_fc4_type &= ~NLP_FC4_NVME;
1954
1955 /* We can't set the DSM state till BOTH PRLIs complete */
1956 goto out_err;
1957 }
1958
1959 if (npr && (npr->acceptRspCode == PRLI_REQ_EXECUTED) &&
1960 (npr->prliType == PRLI_FCP_TYPE)) {
1961 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_DISC,
1962 "6028 FCP NPR PRLI Cmpl Init %d Target %d\n",
1963 npr->initiatorFunc,
1964 npr->targetFunc);
1965 if (npr->initiatorFunc)
1966 ndlp->nlp_type |= NLP_FCP_INITIATOR;
1967 if (npr->targetFunc) {
1968 ndlp->nlp_type |= NLP_FCP_TARGET;
1969 if (npr->writeXferRdyDis)
1970 ndlp->nlp_flag |= NLP_FIRSTBURST;
1971 }
1972 if (npr->Retry)
1973 ndlp->nlp_fcp_info |= NLP_FCP_2_DEVICE;
1974
1975 } else if (nvpr &&
1976 (bf_get_be32(prli_acc_rsp_code, nvpr) ==
1977 PRLI_REQ_EXECUTED) &&
1978 (bf_get_be32(prli_type_code, nvpr) ==
1979 PRLI_NVME_TYPE)) {
1980
1981 /* Complete setting up the remote ndlp personality. */
1982 if (bf_get_be32(prli_init, nvpr))
1983 ndlp->nlp_type |= NLP_NVME_INITIATOR;
1984
1985 /* Target driver cannot solicit NVME FB. */
1986 if (bf_get_be32(prli_tgt, nvpr)) {
1987 /* Complete the nvme target roles. The transport
1988 * needs to know if the rport is capable of
1989 * discovery in addition to its role.
1990 */
1991 ndlp->nlp_type |= NLP_NVME_TARGET;
1992 if (bf_get_be32(prli_disc, nvpr))
1993 ndlp->nlp_type |= NLP_NVME_DISCOVERY;
1994
1995 /*
1996 * If prli_fba is set, the Target supports FirstBurst.
1997 * If prli_fb_sz is 0, the FirstBurst size is unlimited,
1998 * otherwise it defines the actual size supported by
1999 * the NVME Target.
2000 */
2001 if ((bf_get_be32(prli_fba, nvpr) == 1) &&
2002 (phba->cfg_nvme_enable_fb) &&
2003 (!phba->nvmet_support)) {
2004 /* Both sides support FB. The target's first
2005 * burst size is a 512 byte encoded value.
2006 */
2007 ndlp->nlp_flag |= NLP_FIRSTBURST;
2008 ndlp->nvme_fb_size = bf_get_be32(prli_fb_sz,
2009 nvpr);
2010
2011 /* Expressed in units of 512 bytes */
2012 if (ndlp->nvme_fb_size)
2013 ndlp->nvme_fb_size <<=
2014 LPFC_NVME_FB_SHIFT;
2015 else
2016 ndlp->nvme_fb_size = LPFC_NVME_MAX_FB;
2017 }
2018 }
2019
2020 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_DISC,
2021 "6029 NVME PRLI Cmpl w1 x%08x "
2022 "w4 x%08x w5 x%08x flag x%x, "
2023 "fcp_info x%x nlp_type x%x\n",
2024 be32_to_cpu(nvpr->word1),
2025 be32_to_cpu(nvpr->word4),
2026 be32_to_cpu(nvpr->word5),
2027 ndlp->nlp_flag, ndlp->nlp_fcp_info,
2028 ndlp->nlp_type);
2029 }
2030 if (!(ndlp->nlp_type & NLP_FCP_TARGET) &&
2031 (vport->port_type == LPFC_NPIV_PORT) &&
2032 vport->cfg_restrict_login) {
2033 out:
2034 spin_lock_irq(shost->host_lock);
2035 ndlp->nlp_flag |= NLP_TARGET_REMOVE;
2036 spin_unlock_irq(shost->host_lock);
2037 lpfc_issue_els_logo(vport, ndlp, 0);
2038
2039 ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
2040 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
2041 return ndlp->nlp_state;
2042 }
2043
2044 out_err:
2045 /* The ndlp state cannot move to MAPPED or UNMAPPED before all PRLIs
2046 * are complete.
2047 */
2048 if (ndlp->fc4_prli_sent == 0) {
2049 ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
2050 if (ndlp->nlp_type & (NLP_FCP_TARGET | NLP_NVME_TARGET))
2051 lpfc_nlp_set_state(vport, ndlp, NLP_STE_MAPPED_NODE);
2052 else if (ndlp->nlp_type &
2053 (NLP_FCP_INITIATOR | NLP_NVME_INITIATOR))
2054 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
2055 } else
2056 lpfc_printf_vlog(vport,
2057 KERN_INFO, LOG_ELS,
2058 "3067 PRLI's still outstanding "
2059 "on x%06x - count %d, Pend Node Mode "
2060 "transition...\n",
2061 ndlp->nlp_DID, ndlp->fc4_prli_sent);
2062
2063 return ndlp->nlp_state;
2064 }
2065
2066 /*! lpfc_device_rm_prli_issue
2067 *
2068 * \pre
2069 * \post
2070 * \param phba
2071 * \param ndlp
2072 * \param arg
2073 * \param evt
2074 * \return uint32_t
2075 *
2076 * \b Description:
2077 * This routine is envoked when we a request to remove a nport we are in the
2078 * process of PRLIing. We should software abort outstanding prli, unreg
2079 * login, send a logout. We will change node state to UNUSED_NODE, put it
2080 * on plogi list so it can be freed when LOGO completes.
2081 *
2082 */
2083
2084 static uint32_t
lpfc_device_rm_prli_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2085 lpfc_device_rm_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2086 void *arg, uint32_t evt)
2087 {
2088 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2089
2090 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
2091 spin_lock_irq(shost->host_lock);
2092 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
2093 spin_unlock_irq(shost->host_lock);
2094 return ndlp->nlp_state;
2095 } else {
2096 /* software abort outstanding PLOGI */
2097 lpfc_els_abort(vport->phba, ndlp);
2098
2099 lpfc_drop_node(vport, ndlp);
2100 return NLP_STE_FREED_NODE;
2101 }
2102 }
2103
2104
2105 /*! lpfc_device_recov_prli_issue
2106 *
2107 * \pre
2108 * \post
2109 * \param phba
2110 * \param ndlp
2111 * \param arg
2112 * \param evt
2113 * \return uint32_t
2114 *
2115 * \b Description:
2116 * The routine is envoked when the state of a device is unknown, like
2117 * during a link down. We should remove the nodelist entry from the
2118 * unmapped list, issue a UNREG_LOGIN, do a software abort of the
2119 * outstanding PRLI command, then free the node entry.
2120 */
2121 static uint32_t
lpfc_device_recov_prli_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2122 lpfc_device_recov_prli_issue(struct lpfc_vport *vport,
2123 struct lpfc_nodelist *ndlp,
2124 void *arg,
2125 uint32_t evt)
2126 {
2127 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2128 struct lpfc_hba *phba = vport->phba;
2129
2130 /* Don't do anything that will mess up processing of the
2131 * previous RSCN.
2132 */
2133 if (vport->fc_flag & FC_RSCN_DEFERRED)
2134 return ndlp->nlp_state;
2135
2136 /* software abort outstanding PRLI */
2137 lpfc_els_abort(phba, ndlp);
2138
2139 ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
2140 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
2141 spin_lock_irq(shost->host_lock);
2142 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
2143 spin_unlock_irq(shost->host_lock);
2144 lpfc_disc_set_adisc(vport, ndlp);
2145 return ndlp->nlp_state;
2146 }
2147
2148 static uint32_t
lpfc_rcv_plogi_logo_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2149 lpfc_rcv_plogi_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2150 void *arg, uint32_t evt)
2151 {
2152 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *)arg;
2153 struct ls_rjt stat;
2154
2155 memset(&stat, 0, sizeof(struct ls_rjt));
2156 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
2157 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
2158 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
2159 return ndlp->nlp_state;
2160 }
2161
2162 static uint32_t
lpfc_rcv_prli_logo_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2163 lpfc_rcv_prli_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2164 void *arg, uint32_t evt)
2165 {
2166 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *)arg;
2167 struct ls_rjt stat;
2168
2169 memset(&stat, 0, sizeof(struct ls_rjt));
2170 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
2171 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
2172 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
2173 return ndlp->nlp_state;
2174 }
2175
2176 static uint32_t
lpfc_rcv_logo_logo_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2177 lpfc_rcv_logo_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2178 void *arg, uint32_t evt)
2179 {
2180 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2181 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *)arg;
2182
2183 spin_lock_irq(shost->host_lock);
2184 ndlp->nlp_flag |= NLP_LOGO_ACC;
2185 spin_unlock_irq(shost->host_lock);
2186 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
2187 return ndlp->nlp_state;
2188 }
2189
2190 static uint32_t
lpfc_rcv_padisc_logo_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2191 lpfc_rcv_padisc_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2192 void *arg, uint32_t evt)
2193 {
2194 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *)arg;
2195 struct ls_rjt stat;
2196
2197 memset(&stat, 0, sizeof(struct ls_rjt));
2198 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
2199 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
2200 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
2201 return ndlp->nlp_state;
2202 }
2203
2204 static uint32_t
lpfc_rcv_prlo_logo_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2205 lpfc_rcv_prlo_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2206 void *arg, uint32_t evt)
2207 {
2208 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *)arg;
2209 struct ls_rjt stat;
2210
2211 memset(&stat, 0, sizeof(struct ls_rjt));
2212 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
2213 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
2214 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
2215 return ndlp->nlp_state;
2216 }
2217
2218 static uint32_t
lpfc_cmpl_logo_logo_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2219 lpfc_cmpl_logo_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2220 void *arg, uint32_t evt)
2221 {
2222 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2223
2224 ndlp->nlp_prev_state = NLP_STE_LOGO_ISSUE;
2225 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
2226 spin_lock_irq(shost->host_lock);
2227 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
2228 spin_unlock_irq(shost->host_lock);
2229 lpfc_disc_set_adisc(vport, ndlp);
2230 return ndlp->nlp_state;
2231 }
2232
2233 static uint32_t
lpfc_device_rm_logo_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2234 lpfc_device_rm_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2235 void *arg, uint32_t evt)
2236 {
2237 /*
2238 * DevLoss has timed out and is calling for Device Remove.
2239 * In this case, abort the LOGO and cleanup the ndlp
2240 */
2241
2242 lpfc_unreg_rpi(vport, ndlp);
2243 /* software abort outstanding PLOGI */
2244 lpfc_els_abort(vport->phba, ndlp);
2245 lpfc_drop_node(vport, ndlp);
2246 return NLP_STE_FREED_NODE;
2247 }
2248
2249 static uint32_t
lpfc_device_recov_logo_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2250 lpfc_device_recov_logo_issue(struct lpfc_vport *vport,
2251 struct lpfc_nodelist *ndlp,
2252 void *arg, uint32_t evt)
2253 {
2254 /*
2255 * Device Recovery events have no meaning for a node with a LOGO
2256 * outstanding. The LOGO has to complete first and handle the
2257 * node from that point.
2258 */
2259 return ndlp->nlp_state;
2260 }
2261
2262 static uint32_t
lpfc_rcv_plogi_unmap_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2263 lpfc_rcv_plogi_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2264 void *arg, uint32_t evt)
2265 {
2266 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2267
2268 lpfc_rcv_plogi(vport, ndlp, cmdiocb);
2269 return ndlp->nlp_state;
2270 }
2271
2272 static uint32_t
lpfc_rcv_prli_unmap_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2273 lpfc_rcv_prli_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2274 void *arg, uint32_t evt)
2275 {
2276 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2277
2278 if (!lpfc_rcv_prli_support_check(vport, ndlp, cmdiocb))
2279 return ndlp->nlp_state;
2280
2281 lpfc_rcv_prli(vport, ndlp, cmdiocb);
2282 lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
2283 return ndlp->nlp_state;
2284 }
2285
2286 static uint32_t
lpfc_rcv_logo_unmap_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2287 lpfc_rcv_logo_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2288 void *arg, uint32_t evt)
2289 {
2290 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2291
2292 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
2293 return ndlp->nlp_state;
2294 }
2295
2296 static uint32_t
lpfc_rcv_padisc_unmap_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2297 lpfc_rcv_padisc_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2298 void *arg, uint32_t evt)
2299 {
2300 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2301
2302 lpfc_rcv_padisc(vport, ndlp, cmdiocb);
2303 return ndlp->nlp_state;
2304 }
2305
2306 static uint32_t
lpfc_rcv_prlo_unmap_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2307 lpfc_rcv_prlo_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2308 void *arg, uint32_t evt)
2309 {
2310 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2311
2312 lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
2313 return ndlp->nlp_state;
2314 }
2315
2316 static uint32_t
lpfc_device_recov_unmap_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2317 lpfc_device_recov_unmap_node(struct lpfc_vport *vport,
2318 struct lpfc_nodelist *ndlp,
2319 void *arg,
2320 uint32_t evt)
2321 {
2322 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2323
2324 ndlp->nlp_prev_state = NLP_STE_UNMAPPED_NODE;
2325 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
2326 spin_lock_irq(shost->host_lock);
2327 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
2328 ndlp->nlp_fc4_type &= ~(NLP_FC4_FCP | NLP_FC4_NVME);
2329 spin_unlock_irq(shost->host_lock);
2330 lpfc_disc_set_adisc(vport, ndlp);
2331
2332 return ndlp->nlp_state;
2333 }
2334
2335 static uint32_t
lpfc_rcv_plogi_mapped_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2336 lpfc_rcv_plogi_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2337 void *arg, uint32_t evt)
2338 {
2339 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2340
2341 lpfc_rcv_plogi(vport, ndlp, cmdiocb);
2342 return ndlp->nlp_state;
2343 }
2344
2345 static uint32_t
lpfc_rcv_prli_mapped_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2346 lpfc_rcv_prli_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2347 void *arg, uint32_t evt)
2348 {
2349 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2350
2351 if (!lpfc_rcv_prli_support_check(vport, ndlp, cmdiocb))
2352 return ndlp->nlp_state;
2353 lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
2354 return ndlp->nlp_state;
2355 }
2356
2357 static uint32_t
lpfc_rcv_logo_mapped_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2358 lpfc_rcv_logo_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2359 void *arg, uint32_t evt)
2360 {
2361 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2362
2363 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
2364 return ndlp->nlp_state;
2365 }
2366
2367 static uint32_t
lpfc_rcv_padisc_mapped_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2368 lpfc_rcv_padisc_mapped_node(struct lpfc_vport *vport,
2369 struct lpfc_nodelist *ndlp,
2370 void *arg, uint32_t evt)
2371 {
2372 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2373
2374 lpfc_rcv_padisc(vport, ndlp, cmdiocb);
2375 return ndlp->nlp_state;
2376 }
2377
2378 static uint32_t
lpfc_rcv_prlo_mapped_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2379 lpfc_rcv_prlo_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2380 void *arg, uint32_t evt)
2381 {
2382 struct lpfc_hba *phba = vport->phba;
2383 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2384
2385 /* flush the target */
2386 lpfc_sli_abort_iocb(vport, &phba->sli.sli3_ring[LPFC_FCP_RING],
2387 ndlp->nlp_sid, 0, LPFC_CTX_TGT);
2388
2389 /* Treat like rcv logo */
2390 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_PRLO);
2391 return ndlp->nlp_state;
2392 }
2393
2394 static uint32_t
lpfc_device_recov_mapped_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2395 lpfc_device_recov_mapped_node(struct lpfc_vport *vport,
2396 struct lpfc_nodelist *ndlp,
2397 void *arg,
2398 uint32_t evt)
2399 {
2400 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2401
2402 ndlp->nlp_prev_state = NLP_STE_MAPPED_NODE;
2403 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
2404 spin_lock_irq(shost->host_lock);
2405 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
2406 ndlp->nlp_fc4_type &= ~(NLP_FC4_FCP | NLP_FC4_NVME);
2407 spin_unlock_irq(shost->host_lock);
2408 lpfc_disc_set_adisc(vport, ndlp);
2409 return ndlp->nlp_state;
2410 }
2411
2412 static uint32_t
lpfc_rcv_plogi_npr_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2413 lpfc_rcv_plogi_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2414 void *arg, uint32_t evt)
2415 {
2416 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2417 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2418
2419 /* Ignore PLOGI if we have an outstanding LOGO */
2420 if (ndlp->nlp_flag & (NLP_LOGO_SND | NLP_LOGO_ACC))
2421 return ndlp->nlp_state;
2422 if (lpfc_rcv_plogi(vport, ndlp, cmdiocb)) {
2423 lpfc_cancel_retry_delay_tmo(vport, ndlp);
2424 spin_lock_irq(shost->host_lock);
2425 ndlp->nlp_flag &= ~(NLP_NPR_ADISC | NLP_NPR_2B_DISC);
2426 spin_unlock_irq(shost->host_lock);
2427 } else if (!(ndlp->nlp_flag & NLP_NPR_2B_DISC)) {
2428 /* send PLOGI immediately, move to PLOGI issue state */
2429 if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) {
2430 ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
2431 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
2432 lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
2433 }
2434 }
2435 return ndlp->nlp_state;
2436 }
2437
2438 static uint32_t
lpfc_rcv_prli_npr_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2439 lpfc_rcv_prli_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2440 void *arg, uint32_t evt)
2441 {
2442 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2443 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2444 struct ls_rjt stat;
2445
2446 memset(&stat, 0, sizeof (struct ls_rjt));
2447 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
2448 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
2449 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
2450
2451 if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) {
2452 if (ndlp->nlp_flag & NLP_NPR_ADISC) {
2453 spin_lock_irq(shost->host_lock);
2454 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
2455 ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
2456 spin_unlock_irq(shost->host_lock);
2457 lpfc_nlp_set_state(vport, ndlp, NLP_STE_ADISC_ISSUE);
2458 lpfc_issue_els_adisc(vport, ndlp, 0);
2459 } else {
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
lpfc_rcv_logo_npr_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2469 lpfc_rcv_logo_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2470 void *arg, uint32_t evt)
2471 {
2472 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2473
2474 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
2475 return ndlp->nlp_state;
2476 }
2477
2478 static uint32_t
lpfc_rcv_padisc_npr_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2479 lpfc_rcv_padisc_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2480 void *arg, uint32_t evt)
2481 {
2482 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2483
2484 lpfc_rcv_padisc(vport, ndlp, cmdiocb);
2485 /*
2486 * Do not start discovery if discovery is about to start
2487 * or discovery in progress for this node. Starting discovery
2488 * here will affect the counting of discovery threads.
2489 */
2490 if (!(ndlp->nlp_flag & NLP_DELAY_TMO) &&
2491 !(ndlp->nlp_flag & NLP_NPR_2B_DISC)) {
2492 if (ndlp->nlp_flag & NLP_NPR_ADISC) {
2493 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
2494 ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
2495 lpfc_nlp_set_state(vport, ndlp, NLP_STE_ADISC_ISSUE);
2496 lpfc_issue_els_adisc(vport, ndlp, 0);
2497 } else {
2498 ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
2499 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
2500 lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
2501 }
2502 }
2503 return ndlp->nlp_state;
2504 }
2505
2506 static uint32_t
lpfc_rcv_prlo_npr_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2507 lpfc_rcv_prlo_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2508 void *arg, uint32_t evt)
2509 {
2510 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2511 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2512
2513 spin_lock_irq(shost->host_lock);
2514 ndlp->nlp_flag |= NLP_LOGO_ACC;
2515 spin_unlock_irq(shost->host_lock);
2516
2517 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
2518
2519 if ((ndlp->nlp_flag & NLP_DELAY_TMO) == 0) {
2520 mod_timer(&ndlp->nlp_delayfunc,
2521 jiffies + msecs_to_jiffies(1000 * 1));
2522 spin_lock_irq(shost->host_lock);
2523 ndlp->nlp_flag |= NLP_DELAY_TMO;
2524 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
2525 spin_unlock_irq(shost->host_lock);
2526 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
2527 } else {
2528 spin_lock_irq(shost->host_lock);
2529 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
2530 spin_unlock_irq(shost->host_lock);
2531 }
2532 return ndlp->nlp_state;
2533 }
2534
2535 static uint32_t
lpfc_cmpl_plogi_npr_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2536 lpfc_cmpl_plogi_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2537 void *arg, uint32_t evt)
2538 {
2539 struct lpfc_iocbq *cmdiocb, *rspiocb;
2540 IOCB_t *irsp;
2541 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2542
2543 cmdiocb = (struct lpfc_iocbq *) arg;
2544 rspiocb = cmdiocb->context_un.rsp_iocb;
2545
2546 irsp = &rspiocb->iocb;
2547 if (irsp->ulpStatus) {
2548 spin_lock_irq(shost->host_lock);
2549 ndlp->nlp_flag |= NLP_DEFER_RM;
2550 spin_unlock_irq(shost->host_lock);
2551 return NLP_STE_FREED_NODE;
2552 }
2553 return ndlp->nlp_state;
2554 }
2555
2556 static uint32_t
lpfc_cmpl_prli_npr_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2557 lpfc_cmpl_prli_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2558 void *arg, uint32_t evt)
2559 {
2560 struct lpfc_iocbq *cmdiocb, *rspiocb;
2561 IOCB_t *irsp;
2562
2563 cmdiocb = (struct lpfc_iocbq *) arg;
2564 rspiocb = cmdiocb->context_un.rsp_iocb;
2565
2566 irsp = &rspiocb->iocb;
2567 if (irsp->ulpStatus && (ndlp->nlp_flag & NLP_NODEV_REMOVE)) {
2568 lpfc_drop_node(vport, ndlp);
2569 return NLP_STE_FREED_NODE;
2570 }
2571 return ndlp->nlp_state;
2572 }
2573
2574 static uint32_t
lpfc_cmpl_logo_npr_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2575 lpfc_cmpl_logo_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2576 void *arg, uint32_t evt)
2577 {
2578 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2579
2580 /* For the fabric port just clear the fc flags. */
2581 if (ndlp->nlp_DID == Fabric_DID) {
2582 spin_lock_irq(shost->host_lock);
2583 vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP);
2584 spin_unlock_irq(shost->host_lock);
2585 }
2586 lpfc_unreg_rpi(vport, ndlp);
2587 return ndlp->nlp_state;
2588 }
2589
2590 static uint32_t
lpfc_cmpl_adisc_npr_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2591 lpfc_cmpl_adisc_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2592 void *arg, uint32_t evt)
2593 {
2594 struct lpfc_iocbq *cmdiocb, *rspiocb;
2595 IOCB_t *irsp;
2596
2597 cmdiocb = (struct lpfc_iocbq *) arg;
2598 rspiocb = cmdiocb->context_un.rsp_iocb;
2599
2600 irsp = &rspiocb->iocb;
2601 if (irsp->ulpStatus && (ndlp->nlp_flag & NLP_NODEV_REMOVE)) {
2602 lpfc_drop_node(vport, ndlp);
2603 return NLP_STE_FREED_NODE;
2604 }
2605 return ndlp->nlp_state;
2606 }
2607
2608 static uint32_t
lpfc_cmpl_reglogin_npr_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2609 lpfc_cmpl_reglogin_npr_node(struct lpfc_vport *vport,
2610 struct lpfc_nodelist *ndlp,
2611 void *arg, uint32_t evt)
2612 {
2613 LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg;
2614 MAILBOX_t *mb = &pmb->u.mb;
2615
2616 if (!mb->mbxStatus) {
2617 /* SLI4 ports have preallocated logical rpis. */
2618 if (vport->phba->sli_rev < LPFC_SLI_REV4)
2619 ndlp->nlp_rpi = mb->un.varWords[0];
2620 ndlp->nlp_flag |= NLP_RPI_REGISTERED;
2621 if (ndlp->nlp_flag & NLP_LOGO_ACC) {
2622 lpfc_unreg_rpi(vport, ndlp);
2623 }
2624 } else {
2625 if (ndlp->nlp_flag & NLP_NODEV_REMOVE) {
2626 lpfc_drop_node(vport, ndlp);
2627 return NLP_STE_FREED_NODE;
2628 }
2629 }
2630 return ndlp->nlp_state;
2631 }
2632
2633 static uint32_t
lpfc_device_rm_npr_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2634 lpfc_device_rm_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2635 void *arg, uint32_t evt)
2636 {
2637 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2638
2639 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
2640 spin_lock_irq(shost->host_lock);
2641 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
2642 spin_unlock_irq(shost->host_lock);
2643 return ndlp->nlp_state;
2644 }
2645 lpfc_drop_node(vport, ndlp);
2646 return NLP_STE_FREED_NODE;
2647 }
2648
2649 static uint32_t
lpfc_device_recov_npr_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2650 lpfc_device_recov_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2651 void *arg, uint32_t evt)
2652 {
2653 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2654
2655 /* Don't do anything that will mess up processing of the
2656 * previous RSCN.
2657 */
2658 if (vport->fc_flag & FC_RSCN_DEFERRED)
2659 return ndlp->nlp_state;
2660
2661 lpfc_cancel_retry_delay_tmo(vport, ndlp);
2662 spin_lock_irq(shost->host_lock);
2663 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
2664 ndlp->nlp_fc4_type &= ~(NLP_FC4_FCP | NLP_FC4_NVME);
2665 spin_unlock_irq(shost->host_lock);
2666 return ndlp->nlp_state;
2667 }
2668
2669
2670 /* This next section defines the NPort Discovery State Machine */
2671
2672 /* There are 4 different double linked lists nodelist entries can reside on.
2673 * The plogi list and adisc list are used when Link Up discovery or RSCN
2674 * processing is needed. Each list holds the nodes that we will send PLOGI
2675 * or ADISC on. These lists will keep track of what nodes will be effected
2676 * by an RSCN, or a Link Up (Typically, all nodes are effected on Link Up).
2677 * The unmapped_list will contain all nodes that we have successfully logged
2678 * into at the Fibre Channel level. The mapped_list will contain all nodes
2679 * that are mapped FCP targets.
2680 */
2681 /*
2682 * The bind list is a list of undiscovered (potentially non-existent) nodes
2683 * that we have saved binding information on. This information is used when
2684 * nodes transition from the unmapped to the mapped list.
2685 */
2686 /* For UNUSED_NODE state, the node has just been allocated .
2687 * For PLOGI_ISSUE and REG_LOGIN_ISSUE, the node is on
2688 * the PLOGI list. For REG_LOGIN_COMPL, the node is taken off the PLOGI list
2689 * and put on the unmapped list. For ADISC processing, the node is taken off
2690 * the ADISC list and placed on either the mapped or unmapped list (depending
2691 * on its previous state). Once on the unmapped list, a PRLI is issued and the
2692 * state changed to PRLI_ISSUE. When the PRLI completion occurs, the state is
2693 * changed to UNMAPPED_NODE. If the completion indicates a mapped
2694 * node, the node is taken off the unmapped list. The binding list is checked
2695 * for a valid binding, or a binding is automatically assigned. If binding
2696 * assignment is unsuccessful, the node is left on the unmapped list. If
2697 * binding assignment is successful, the associated binding list entry (if
2698 * any) is removed, and the node is placed on the mapped list.
2699 */
2700 /*
2701 * For a Link Down, all nodes on the ADISC, PLOGI, unmapped or mapped
2702 * lists will receive a DEVICE_RECOVERY event. If the linkdown or devloss timers
2703 * expire, all effected nodes will receive a DEVICE_RM event.
2704 */
2705 /*
2706 * For a Link Up or RSCN, all nodes will move from the mapped / unmapped lists
2707 * to either the ADISC or PLOGI list. After a Nameserver query or ALPA loopmap
2708 * check, additional nodes may be added or removed (via DEVICE_RM) to / from
2709 * the PLOGI or ADISC lists. Once the PLOGI and ADISC lists are populated,
2710 * we will first process the ADISC list. 32 entries are processed initially and
2711 * ADISC is initited for each one. Completions / Events for each node are
2712 * funnelled thru the state machine. As each node finishes ADISC processing, it
2713 * starts ADISC for any nodes waiting for ADISC processing. If no nodes are
2714 * waiting, and the ADISC list count is identically 0, then we are done. For
2715 * Link Up discovery, since all nodes on the PLOGI list are UNREG_LOGIN'ed, we
2716 * can issue a CLEAR_LA and reenable Link Events. Next we will process the PLOGI
2717 * list. 32 entries are processed initially and PLOGI is initited for each one.
2718 * Completions / Events for each node are funnelled thru the state machine. As
2719 * each node finishes PLOGI processing, it starts PLOGI for any nodes waiting
2720 * for PLOGI processing. If no nodes are waiting, and the PLOGI list count is
2721 * indentically 0, then we are done. We have now completed discovery / RSCN
2722 * handling. Upon completion, ALL nodes should be on either the mapped or
2723 * unmapped lists.
2724 */
2725
2726 static uint32_t (*lpfc_disc_action[NLP_STE_MAX_STATE * NLP_EVT_MAX_EVENT])
2727 (struct lpfc_vport *, struct lpfc_nodelist *, void *, uint32_t) = {
2728 /* Action routine Event Current State */
2729 lpfc_rcv_plogi_unused_node, /* RCV_PLOGI UNUSED_NODE */
2730 lpfc_rcv_els_unused_node, /* RCV_PRLI */
2731 lpfc_rcv_logo_unused_node, /* RCV_LOGO */
2732 lpfc_rcv_els_unused_node, /* RCV_ADISC */
2733 lpfc_rcv_els_unused_node, /* RCV_PDISC */
2734 lpfc_rcv_els_unused_node, /* RCV_PRLO */
2735 lpfc_disc_illegal, /* CMPL_PLOGI */
2736 lpfc_disc_illegal, /* CMPL_PRLI */
2737 lpfc_cmpl_logo_unused_node, /* CMPL_LOGO */
2738 lpfc_disc_illegal, /* CMPL_ADISC */
2739 lpfc_disc_illegal, /* CMPL_REG_LOGIN */
2740 lpfc_device_rm_unused_node, /* DEVICE_RM */
2741 lpfc_device_recov_unused_node, /* DEVICE_RECOVERY */
2742
2743 lpfc_rcv_plogi_plogi_issue, /* RCV_PLOGI PLOGI_ISSUE */
2744 lpfc_rcv_prli_plogi_issue, /* RCV_PRLI */
2745 lpfc_rcv_logo_plogi_issue, /* RCV_LOGO */
2746 lpfc_rcv_els_plogi_issue, /* RCV_ADISC */
2747 lpfc_rcv_els_plogi_issue, /* RCV_PDISC */
2748 lpfc_rcv_els_plogi_issue, /* RCV_PRLO */
2749 lpfc_cmpl_plogi_plogi_issue, /* CMPL_PLOGI */
2750 lpfc_disc_illegal, /* CMPL_PRLI */
2751 lpfc_cmpl_logo_plogi_issue, /* CMPL_LOGO */
2752 lpfc_disc_illegal, /* CMPL_ADISC */
2753 lpfc_cmpl_reglogin_plogi_issue,/* CMPL_REG_LOGIN */
2754 lpfc_device_rm_plogi_issue, /* DEVICE_RM */
2755 lpfc_device_recov_plogi_issue, /* DEVICE_RECOVERY */
2756
2757 lpfc_rcv_plogi_adisc_issue, /* RCV_PLOGI ADISC_ISSUE */
2758 lpfc_rcv_prli_adisc_issue, /* RCV_PRLI */
2759 lpfc_rcv_logo_adisc_issue, /* RCV_LOGO */
2760 lpfc_rcv_padisc_adisc_issue, /* RCV_ADISC */
2761 lpfc_rcv_padisc_adisc_issue, /* RCV_PDISC */
2762 lpfc_rcv_prlo_adisc_issue, /* RCV_PRLO */
2763 lpfc_disc_illegal, /* CMPL_PLOGI */
2764 lpfc_disc_illegal, /* CMPL_PRLI */
2765 lpfc_disc_illegal, /* CMPL_LOGO */
2766 lpfc_cmpl_adisc_adisc_issue, /* CMPL_ADISC */
2767 lpfc_disc_illegal, /* CMPL_REG_LOGIN */
2768 lpfc_device_rm_adisc_issue, /* DEVICE_RM */
2769 lpfc_device_recov_adisc_issue, /* DEVICE_RECOVERY */
2770
2771 lpfc_rcv_plogi_reglogin_issue, /* RCV_PLOGI REG_LOGIN_ISSUE */
2772 lpfc_rcv_prli_reglogin_issue, /* RCV_PLOGI */
2773 lpfc_rcv_logo_reglogin_issue, /* RCV_LOGO */
2774 lpfc_rcv_padisc_reglogin_issue, /* RCV_ADISC */
2775 lpfc_rcv_padisc_reglogin_issue, /* RCV_PDISC */
2776 lpfc_rcv_prlo_reglogin_issue, /* RCV_PRLO */
2777 lpfc_cmpl_plogi_illegal, /* CMPL_PLOGI */
2778 lpfc_disc_illegal, /* CMPL_PRLI */
2779 lpfc_disc_illegal, /* CMPL_LOGO */
2780 lpfc_disc_illegal, /* CMPL_ADISC */
2781 lpfc_cmpl_reglogin_reglogin_issue,/* CMPL_REG_LOGIN */
2782 lpfc_device_rm_reglogin_issue, /* DEVICE_RM */
2783 lpfc_device_recov_reglogin_issue,/* DEVICE_RECOVERY */
2784
2785 lpfc_rcv_plogi_prli_issue, /* RCV_PLOGI PRLI_ISSUE */
2786 lpfc_rcv_prli_prli_issue, /* RCV_PRLI */
2787 lpfc_rcv_logo_prli_issue, /* RCV_LOGO */
2788 lpfc_rcv_padisc_prli_issue, /* RCV_ADISC */
2789 lpfc_rcv_padisc_prli_issue, /* RCV_PDISC */
2790 lpfc_rcv_prlo_prli_issue, /* RCV_PRLO */
2791 lpfc_cmpl_plogi_illegal, /* CMPL_PLOGI */
2792 lpfc_cmpl_prli_prli_issue, /* CMPL_PRLI */
2793 lpfc_disc_illegal, /* CMPL_LOGO */
2794 lpfc_disc_illegal, /* CMPL_ADISC */
2795 lpfc_disc_illegal, /* CMPL_REG_LOGIN */
2796 lpfc_device_rm_prli_issue, /* DEVICE_RM */
2797 lpfc_device_recov_prli_issue, /* DEVICE_RECOVERY */
2798
2799 lpfc_rcv_plogi_logo_issue, /* RCV_PLOGI LOGO_ISSUE */
2800 lpfc_rcv_prli_logo_issue, /* RCV_PRLI */
2801 lpfc_rcv_logo_logo_issue, /* RCV_LOGO */
2802 lpfc_rcv_padisc_logo_issue, /* RCV_ADISC */
2803 lpfc_rcv_padisc_logo_issue, /* RCV_PDISC */
2804 lpfc_rcv_prlo_logo_issue, /* RCV_PRLO */
2805 lpfc_cmpl_plogi_illegal, /* CMPL_PLOGI */
2806 lpfc_disc_illegal, /* CMPL_PRLI */
2807 lpfc_cmpl_logo_logo_issue, /* CMPL_LOGO */
2808 lpfc_disc_illegal, /* CMPL_ADISC */
2809 lpfc_disc_illegal, /* CMPL_REG_LOGIN */
2810 lpfc_device_rm_logo_issue, /* DEVICE_RM */
2811 lpfc_device_recov_logo_issue, /* DEVICE_RECOVERY */
2812
2813 lpfc_rcv_plogi_unmap_node, /* RCV_PLOGI UNMAPPED_NODE */
2814 lpfc_rcv_prli_unmap_node, /* RCV_PRLI */
2815 lpfc_rcv_logo_unmap_node, /* RCV_LOGO */
2816 lpfc_rcv_padisc_unmap_node, /* RCV_ADISC */
2817 lpfc_rcv_padisc_unmap_node, /* RCV_PDISC */
2818 lpfc_rcv_prlo_unmap_node, /* RCV_PRLO */
2819 lpfc_disc_illegal, /* CMPL_PLOGI */
2820 lpfc_disc_illegal, /* CMPL_PRLI */
2821 lpfc_disc_illegal, /* CMPL_LOGO */
2822 lpfc_disc_illegal, /* CMPL_ADISC */
2823 lpfc_disc_illegal, /* CMPL_REG_LOGIN */
2824 lpfc_disc_illegal, /* DEVICE_RM */
2825 lpfc_device_recov_unmap_node, /* DEVICE_RECOVERY */
2826
2827 lpfc_rcv_plogi_mapped_node, /* RCV_PLOGI MAPPED_NODE */
2828 lpfc_rcv_prli_mapped_node, /* RCV_PRLI */
2829 lpfc_rcv_logo_mapped_node, /* RCV_LOGO */
2830 lpfc_rcv_padisc_mapped_node, /* RCV_ADISC */
2831 lpfc_rcv_padisc_mapped_node, /* RCV_PDISC */
2832 lpfc_rcv_prlo_mapped_node, /* RCV_PRLO */
2833 lpfc_disc_illegal, /* CMPL_PLOGI */
2834 lpfc_disc_illegal, /* CMPL_PRLI */
2835 lpfc_disc_illegal, /* CMPL_LOGO */
2836 lpfc_disc_illegal, /* CMPL_ADISC */
2837 lpfc_disc_illegal, /* CMPL_REG_LOGIN */
2838 lpfc_disc_illegal, /* DEVICE_RM */
2839 lpfc_device_recov_mapped_node, /* DEVICE_RECOVERY */
2840
2841 lpfc_rcv_plogi_npr_node, /* RCV_PLOGI NPR_NODE */
2842 lpfc_rcv_prli_npr_node, /* RCV_PRLI */
2843 lpfc_rcv_logo_npr_node, /* RCV_LOGO */
2844 lpfc_rcv_padisc_npr_node, /* RCV_ADISC */
2845 lpfc_rcv_padisc_npr_node, /* RCV_PDISC */
2846 lpfc_rcv_prlo_npr_node, /* RCV_PRLO */
2847 lpfc_cmpl_plogi_npr_node, /* CMPL_PLOGI */
2848 lpfc_cmpl_prli_npr_node, /* CMPL_PRLI */
2849 lpfc_cmpl_logo_npr_node, /* CMPL_LOGO */
2850 lpfc_cmpl_adisc_npr_node, /* CMPL_ADISC */
2851 lpfc_cmpl_reglogin_npr_node, /* CMPL_REG_LOGIN */
2852 lpfc_device_rm_npr_node, /* DEVICE_RM */
2853 lpfc_device_recov_npr_node, /* DEVICE_RECOVERY */
2854 };
2855
2856 int
lpfc_disc_state_machine(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2857 lpfc_disc_state_machine(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2858 void *arg, uint32_t evt)
2859 {
2860 uint32_t cur_state, rc;
2861 uint32_t(*func) (struct lpfc_vport *, struct lpfc_nodelist *, void *,
2862 uint32_t);
2863 uint32_t got_ndlp = 0;
2864
2865 if (lpfc_nlp_get(ndlp))
2866 got_ndlp = 1;
2867
2868 cur_state = ndlp->nlp_state;
2869
2870 /* DSM in event <evt> on NPort <nlp_DID> in state <cur_state> */
2871 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
2872 "0211 DSM in event x%x on NPort x%x in "
2873 "state %d Data: x%x x%x\n",
2874 evt, ndlp->nlp_DID, cur_state,
2875 ndlp->nlp_flag, ndlp->nlp_fc4_type);
2876
2877 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_DSM,
2878 "DSM in: evt:%d ste:%d did:x%x",
2879 evt, cur_state, ndlp->nlp_DID);
2880
2881 func = lpfc_disc_action[(cur_state * NLP_EVT_MAX_EVENT) + evt];
2882 rc = (func) (vport, ndlp, arg, evt);
2883
2884 /* DSM out state <rc> on NPort <nlp_DID> */
2885 if (got_ndlp) {
2886 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
2887 "0212 DSM out state %d on NPort x%x Data: x%x\n",
2888 rc, ndlp->nlp_DID, ndlp->nlp_flag);
2889
2890 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_DSM,
2891 "DSM out: ste:%d did:x%x flg:x%x",
2892 rc, ndlp->nlp_DID, ndlp->nlp_flag);
2893 /* Decrement the ndlp reference count held for this function */
2894 lpfc_nlp_put(ndlp);
2895 } else {
2896 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
2897 "0213 DSM out state %d on NPort free\n", rc);
2898
2899 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_DSM,
2900 "DSM out: ste:%d did:x%x flg:x%x",
2901 rc, 0, 0);
2902 }
2903
2904 return rc;
2905 }
2906