1 /*******************************************************************
2 * This file is part of the Emulex Linux Device Driver for *
3 * Fibre Channel Host Bus Adapters. *
4 * Copyright (C) 2017-2023 Broadcom. All Rights Reserved. The term *
5 * “Broadcom” refers to Broadcom Inc. and/or its subsidiaries. *
6 * Copyright (C) 2004-2016 Emulex. All rights reserved. *
7 * EMULEX and SLI are trademarks of Emulex. *
8 * www.broadcom.com *
9 * Portions Copyright (C) 2004-2005 Christoph Hellwig *
10 * *
11 * This program is free software; you can redistribute it and/or *
12 * modify it under the terms of version 2 of the GNU General *
13 * Public License as published by the Free Software Foundation. *
14 * This program is distributed in the hope that it will be useful. *
15 * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND *
16 * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, *
17 * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE *
18 * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD *
19 * TO BE LEGALLY INVALID. See the GNU General Public License for *
20 * more details, a copy of which can be found in the file COPYING *
21 * included with this package. *
22 *******************************************************************/
23
24 #include <linux/blkdev.h>
25 #include <linux/pci.h>
26 #include <linux/slab.h>
27 #include <linux/interrupt.h>
28
29 #include <scsi/scsi.h>
30 #include <scsi/scsi_device.h>
31 #include <scsi/scsi_host.h>
32 #include <scsi/scsi_transport_fc.h>
33 #include <scsi/fc/fc_fs.h>
34
35 #include "lpfc_hw4.h"
36 #include "lpfc_hw.h"
37 #include "lpfc_sli.h"
38 #include "lpfc_sli4.h"
39 #include "lpfc_nl.h"
40 #include "lpfc_disc.h"
41 #include "lpfc.h"
42 #include "lpfc_scsi.h"
43 #include "lpfc_nvme.h"
44 #include "lpfc_logmsg.h"
45 #include "lpfc_crtn.h"
46 #include "lpfc_vport.h"
47 #include "lpfc_debugfs.h"
48
49
50 /* Called to verify a rcv'ed ADISC was intended for us. */
51 static int
lpfc_check_adisc(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,struct lpfc_name * nn,struct lpfc_name * pn)52 lpfc_check_adisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
53 struct lpfc_name *nn, struct lpfc_name *pn)
54 {
55 /* First, we MUST have a RPI registered */
56 if (!(ndlp->nlp_flag & NLP_RPI_REGISTERED))
57 return 0;
58
59 /* Compare the ADISC rsp WWNN / WWPN matches our internal node
60 * table entry for that node.
61 */
62 if (memcmp(nn, &ndlp->nlp_nodename, sizeof (struct lpfc_name)))
63 return 0;
64
65 if (memcmp(pn, &ndlp->nlp_portname, sizeof (struct lpfc_name)))
66 return 0;
67
68 /* we match, return success */
69 return 1;
70 }
71
72 int
lpfc_check_sparm(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,struct serv_parm * sp,uint32_t class,int flogi)73 lpfc_check_sparm(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
74 struct serv_parm *sp, uint32_t class, int flogi)
75 {
76 volatile struct serv_parm *hsp = &vport->fc_sparam;
77 uint16_t hsp_value, ssp_value = 0;
78
79 /*
80 * The receive data field size and buffer-to-buffer receive data field
81 * size entries are 16 bits but are represented as two 8-bit fields in
82 * the driver data structure to account for rsvd bits and other control
83 * bits. Reconstruct and compare the fields as a 16-bit values before
84 * correcting the byte values.
85 */
86 if (sp->cls1.classValid) {
87 if (!flogi) {
88 hsp_value = ((hsp->cls1.rcvDataSizeMsb << 8) |
89 hsp->cls1.rcvDataSizeLsb);
90 ssp_value = ((sp->cls1.rcvDataSizeMsb << 8) |
91 sp->cls1.rcvDataSizeLsb);
92 if (!ssp_value)
93 goto bad_service_param;
94 if (ssp_value > hsp_value) {
95 sp->cls1.rcvDataSizeLsb =
96 hsp->cls1.rcvDataSizeLsb;
97 sp->cls1.rcvDataSizeMsb =
98 hsp->cls1.rcvDataSizeMsb;
99 }
100 }
101 } else if (class == CLASS1)
102 goto bad_service_param;
103 if (sp->cls2.classValid) {
104 if (!flogi) {
105 hsp_value = ((hsp->cls2.rcvDataSizeMsb << 8) |
106 hsp->cls2.rcvDataSizeLsb);
107 ssp_value = ((sp->cls2.rcvDataSizeMsb << 8) |
108 sp->cls2.rcvDataSizeLsb);
109 if (!ssp_value)
110 goto bad_service_param;
111 if (ssp_value > hsp_value) {
112 sp->cls2.rcvDataSizeLsb =
113 hsp->cls2.rcvDataSizeLsb;
114 sp->cls2.rcvDataSizeMsb =
115 hsp->cls2.rcvDataSizeMsb;
116 }
117 }
118 } else if (class == CLASS2)
119 goto bad_service_param;
120 if (sp->cls3.classValid) {
121 if (!flogi) {
122 hsp_value = ((hsp->cls3.rcvDataSizeMsb << 8) |
123 hsp->cls3.rcvDataSizeLsb);
124 ssp_value = ((sp->cls3.rcvDataSizeMsb << 8) |
125 sp->cls3.rcvDataSizeLsb);
126 if (!ssp_value)
127 goto bad_service_param;
128 if (ssp_value > hsp_value) {
129 sp->cls3.rcvDataSizeLsb =
130 hsp->cls3.rcvDataSizeLsb;
131 sp->cls3.rcvDataSizeMsb =
132 hsp->cls3.rcvDataSizeMsb;
133 }
134 }
135 } else if (class == CLASS3)
136 goto bad_service_param;
137
138 /*
139 * Preserve the upper four bits of the MSB from the PLOGI response.
140 * These bits contain the Buffer-to-Buffer State Change Number
141 * from the target and need to be passed to the FW.
142 */
143 hsp_value = (hsp->cmn.bbRcvSizeMsb << 8) | hsp->cmn.bbRcvSizeLsb;
144 ssp_value = (sp->cmn.bbRcvSizeMsb << 8) | sp->cmn.bbRcvSizeLsb;
145 if (ssp_value > hsp_value) {
146 sp->cmn.bbRcvSizeLsb = hsp->cmn.bbRcvSizeLsb;
147 sp->cmn.bbRcvSizeMsb = (sp->cmn.bbRcvSizeMsb & 0xF0) |
148 (hsp->cmn.bbRcvSizeMsb & 0x0F);
149 }
150
151 memcpy(&ndlp->nlp_nodename, &sp->nodeName, sizeof (struct lpfc_name));
152 memcpy(&ndlp->nlp_portname, &sp->portName, sizeof (struct lpfc_name));
153 return 1;
154 bad_service_param:
155 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
156 "0207 Device %x "
157 "(%02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x) sent "
158 "invalid service parameters. Ignoring device.\n",
159 ndlp->nlp_DID,
160 sp->nodeName.u.wwn[0], sp->nodeName.u.wwn[1],
161 sp->nodeName.u.wwn[2], sp->nodeName.u.wwn[3],
162 sp->nodeName.u.wwn[4], sp->nodeName.u.wwn[5],
163 sp->nodeName.u.wwn[6], sp->nodeName.u.wwn[7]);
164 return 0;
165 }
166
167 static void *
lpfc_check_elscmpl_iocb(struct lpfc_hba * phba,struct lpfc_iocbq * cmdiocb,struct lpfc_iocbq * rspiocb)168 lpfc_check_elscmpl_iocb(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
169 struct lpfc_iocbq *rspiocb)
170 {
171 struct lpfc_dmabuf *pcmd, *prsp;
172 uint32_t *lp;
173 void *ptr = NULL;
174 u32 ulp_status = get_job_ulpstatus(phba, rspiocb);
175
176 pcmd = cmdiocb->cmd_dmabuf;
177
178 /* For lpfc_els_abort, cmd_dmabuf could be zero'ed to delay
179 * freeing associated memory till after ABTS completes.
180 */
181 if (pcmd) {
182 prsp = list_get_first(&pcmd->list, struct lpfc_dmabuf,
183 list);
184 if (prsp) {
185 lp = (uint32_t *) prsp->virt;
186 ptr = (void *)((uint8_t *)lp + sizeof(uint32_t));
187 }
188 } else {
189 /* Force ulp_status error since we are returning NULL ptr */
190 if (!(ulp_status)) {
191 if (phba->sli_rev == LPFC_SLI_REV4) {
192 bf_set(lpfc_wcqe_c_status, &rspiocb->wcqe_cmpl,
193 IOSTAT_LOCAL_REJECT);
194 rspiocb->wcqe_cmpl.parameter = IOERR_SLI_ABORTED;
195 } else {
196 rspiocb->iocb.ulpStatus = IOSTAT_LOCAL_REJECT;
197 rspiocb->iocb.un.ulpWord[4] = IOERR_SLI_ABORTED;
198 }
199 }
200 ptr = NULL;
201 }
202 return ptr;
203 }
204
205
206
207 /*
208 * Free resources / clean up outstanding I/Os
209 * associated with a LPFC_NODELIST entry. This
210 * routine effectively results in a "software abort".
211 */
212 void
lpfc_els_abort(struct lpfc_hba * phba,struct lpfc_nodelist * ndlp)213 lpfc_els_abort(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
214 {
215 LIST_HEAD(abort_list);
216 struct lpfc_sli_ring *pring;
217 struct lpfc_iocbq *iocb, *next_iocb;
218
219 pring = lpfc_phba_elsring(phba);
220
221 /* In case of error recovery path, we might have a NULL pring here */
222 if (unlikely(!pring))
223 return;
224
225 /* Abort outstanding I/O on NPort <nlp_DID> */
226 lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_DISCOVERY,
227 "2819 Abort outstanding I/O on NPort x%x "
228 "Data: x%x x%x x%x\n",
229 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
230 ndlp->nlp_rpi);
231 /* Clean up all fabric IOs first.*/
232 lpfc_fabric_abort_nport(ndlp);
233
234 /*
235 * Lock the ELS ring txcmplq for SLI3/SLI4 and build a local list
236 * of all ELS IOs that need an ABTS. The IOs need to stay on the
237 * txcmplq so that the abort operation completes them successfully.
238 */
239 spin_lock_irq(&phba->hbalock);
240 if (phba->sli_rev == LPFC_SLI_REV4)
241 spin_lock(&pring->ring_lock);
242 list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq, list) {
243 /* Add to abort_list on on NDLP match. */
244 if (lpfc_check_sli_ndlp(phba, pring, iocb, ndlp))
245 list_add_tail(&iocb->dlist, &abort_list);
246 }
247 if (phba->sli_rev == LPFC_SLI_REV4)
248 spin_unlock(&pring->ring_lock);
249 spin_unlock_irq(&phba->hbalock);
250
251 /* Abort the targeted IOs and remove them from the abort list. */
252 list_for_each_entry_safe(iocb, next_iocb, &abort_list, dlist) {
253 spin_lock_irq(&phba->hbalock);
254 list_del_init(&iocb->dlist);
255 lpfc_sli_issue_abort_iotag(phba, pring, iocb, NULL);
256 spin_unlock_irq(&phba->hbalock);
257 }
258 /* Make sure HBA is alive */
259 lpfc_issue_hb_tmo(phba);
260
261 INIT_LIST_HEAD(&abort_list);
262
263 /* Now process the txq */
264 spin_lock_irq(&phba->hbalock);
265 if (phba->sli_rev == LPFC_SLI_REV4)
266 spin_lock(&pring->ring_lock);
267
268 list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) {
269 /* Check to see if iocb matches the nport we are looking for */
270 if (lpfc_check_sli_ndlp(phba, pring, iocb, ndlp)) {
271 list_del_init(&iocb->list);
272 list_add_tail(&iocb->list, &abort_list);
273 }
274 }
275
276 if (phba->sli_rev == LPFC_SLI_REV4)
277 spin_unlock(&pring->ring_lock);
278 spin_unlock_irq(&phba->hbalock);
279
280 /* Cancel all the IOCBs from the completions list */
281 lpfc_sli_cancel_iocbs(phba, &abort_list,
282 IOSTAT_LOCAL_REJECT, IOERR_SLI_ABORTED);
283
284 lpfc_cancel_retry_delay_tmo(phba->pport, ndlp);
285 }
286
287 /* lpfc_defer_plogi_acc - Issue PLOGI ACC after reg_login completes
288 * @phba: pointer to lpfc hba data structure.
289 * @login_mbox: pointer to REG_RPI mailbox object
290 *
291 * The ACC for a rcv'ed PLOGI is deferred until AFTER the REG_RPI completes
292 */
293 static void
lpfc_defer_plogi_acc(struct lpfc_hba * phba,LPFC_MBOXQ_t * login_mbox)294 lpfc_defer_plogi_acc(struct lpfc_hba *phba, LPFC_MBOXQ_t *login_mbox)
295 {
296 struct lpfc_iocbq *save_iocb;
297 struct lpfc_nodelist *ndlp;
298 MAILBOX_t *mb = &login_mbox->u.mb;
299
300 int rc;
301
302 ndlp = login_mbox->ctx_ndlp;
303 save_iocb = login_mbox->context3;
304
305 if (mb->mbxStatus == MBX_SUCCESS) {
306 /* Now that REG_RPI completed successfully,
307 * we can now proceed with sending the PLOGI ACC.
308 */
309 rc = lpfc_els_rsp_acc(login_mbox->vport, ELS_CMD_PLOGI,
310 save_iocb, ndlp, NULL);
311 if (rc) {
312 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
313 "4576 PLOGI ACC fails pt2pt discovery: "
314 "DID %x Data: %x\n", ndlp->nlp_DID, rc);
315 }
316 }
317
318 /* Now process the REG_RPI cmpl */
319 lpfc_mbx_cmpl_reg_login(phba, login_mbox);
320 ndlp->nlp_flag &= ~NLP_ACC_REGLOGIN;
321 kfree(save_iocb);
322 }
323
324 static int
lpfc_rcv_plogi(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,struct lpfc_iocbq * cmdiocb)325 lpfc_rcv_plogi(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
326 struct lpfc_iocbq *cmdiocb)
327 {
328 struct lpfc_hba *phba = vport->phba;
329 struct lpfc_dmabuf *pcmd;
330 uint64_t nlp_portwwn = 0;
331 uint32_t *lp;
332 union lpfc_wqe128 *wqe;
333 IOCB_t *icmd;
334 struct serv_parm *sp;
335 uint32_t ed_tov;
336 LPFC_MBOXQ_t *link_mbox;
337 LPFC_MBOXQ_t *login_mbox;
338 struct lpfc_iocbq *save_iocb;
339 struct ls_rjt stat;
340 uint32_t vid, flag;
341 int rc;
342 u32 remote_did;
343
344 memset(&stat, 0, sizeof (struct ls_rjt));
345 pcmd = cmdiocb->cmd_dmabuf;
346 lp = (uint32_t *) pcmd->virt;
347 sp = (struct serv_parm *) ((uint8_t *) lp + sizeof (uint32_t));
348 if (wwn_to_u64(sp->portName.u.wwn) == 0) {
349 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
350 "0140 PLOGI Reject: invalid pname\n");
351 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
352 stat.un.b.lsRjtRsnCodeExp = LSEXP_INVALID_PNAME;
353 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
354 NULL);
355 return 0;
356 }
357 if (wwn_to_u64(sp->nodeName.u.wwn) == 0) {
358 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
359 "0141 PLOGI Reject: invalid nname\n");
360 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
361 stat.un.b.lsRjtRsnCodeExp = LSEXP_INVALID_NNAME;
362 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
363 NULL);
364 return 0;
365 }
366
367 nlp_portwwn = wwn_to_u64(ndlp->nlp_portname.u.wwn);
368 if ((lpfc_check_sparm(vport, ndlp, sp, CLASS3, 0) == 0)) {
369 /* Reject this request because invalid parameters */
370 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
371 stat.un.b.lsRjtRsnCodeExp = LSEXP_SPARM_OPTIONS;
372 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
373 NULL);
374 return 0;
375 }
376
377 if (phba->sli_rev == LPFC_SLI_REV4)
378 wqe = &cmdiocb->wqe;
379 else
380 icmd = &cmdiocb->iocb;
381
382 /* PLOGI chkparm OK */
383 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
384 "0114 PLOGI chkparm OK Data: x%x x%x x%x "
385 "x%x x%x x%x\n",
386 ndlp->nlp_DID, ndlp->nlp_state, ndlp->nlp_flag,
387 ndlp->nlp_rpi, vport->port_state,
388 vport->fc_flag);
389
390 if (vport->cfg_fcp_class == 2 && sp->cls2.classValid)
391 ndlp->nlp_fcp_info |= CLASS2;
392 else
393 ndlp->nlp_fcp_info |= CLASS3;
394
395 ndlp->nlp_class_sup = 0;
396 if (sp->cls1.classValid)
397 ndlp->nlp_class_sup |= FC_COS_CLASS1;
398 if (sp->cls2.classValid)
399 ndlp->nlp_class_sup |= FC_COS_CLASS2;
400 if (sp->cls3.classValid)
401 ndlp->nlp_class_sup |= FC_COS_CLASS3;
402 if (sp->cls4.classValid)
403 ndlp->nlp_class_sup |= FC_COS_CLASS4;
404 ndlp->nlp_maxframe =
405 ((sp->cmn.bbRcvSizeMsb & 0x0F) << 8) | sp->cmn.bbRcvSizeLsb;
406 /* if already logged in, do implicit logout */
407 switch (ndlp->nlp_state) {
408 case NLP_STE_NPR_NODE:
409 if (!(ndlp->nlp_flag & NLP_NPR_ADISC))
410 break;
411 fallthrough;
412 case NLP_STE_REG_LOGIN_ISSUE:
413 case NLP_STE_PRLI_ISSUE:
414 case NLP_STE_UNMAPPED_NODE:
415 case NLP_STE_MAPPED_NODE:
416 /* For initiators, lpfc_plogi_confirm_nport skips fabric did.
417 * For target mode, execute implicit logo.
418 * Fabric nodes go into NPR.
419 */
420 if (!(ndlp->nlp_type & NLP_FABRIC) &&
421 !(phba->nvmet_support)) {
422 /* Clear ndlp info, since follow up PRLI may have
423 * updated ndlp information
424 */
425 ndlp->nlp_type &= ~(NLP_FCP_TARGET | NLP_FCP_INITIATOR);
426 ndlp->nlp_type &= ~(NLP_NVME_TARGET | NLP_NVME_INITIATOR);
427 ndlp->nlp_fcp_info &= ~NLP_FCP_2_DEVICE;
428 ndlp->nlp_nvme_info &= ~NLP_NVME_NSLER;
429 ndlp->nlp_flag &= ~NLP_FIRSTBURST;
430
431 lpfc_els_rsp_acc(vport, ELS_CMD_PLOGI, cmdiocb,
432 ndlp, NULL);
433 return 1;
434 }
435 if (nlp_portwwn != 0 &&
436 nlp_portwwn != wwn_to_u64(sp->portName.u.wwn))
437 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
438 "0143 PLOGI recv'd from DID: x%x "
439 "WWPN changed: old %llx new %llx\n",
440 ndlp->nlp_DID,
441 (unsigned long long)nlp_portwwn,
442 (unsigned long long)
443 wwn_to_u64(sp->portName.u.wwn));
444
445 /* Notify transport of connectivity loss to trigger cleanup. */
446 if (phba->nvmet_support &&
447 ndlp->nlp_state == NLP_STE_UNMAPPED_NODE)
448 lpfc_nvmet_invalidate_host(phba, ndlp);
449
450 ndlp->nlp_prev_state = ndlp->nlp_state;
451 /* rport needs to be unregistered first */
452 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
453 break;
454 }
455
456 ndlp->nlp_type &= ~(NLP_FCP_TARGET | NLP_FCP_INITIATOR);
457 ndlp->nlp_type &= ~(NLP_NVME_TARGET | NLP_NVME_INITIATOR);
458 ndlp->nlp_fcp_info &= ~NLP_FCP_2_DEVICE;
459 ndlp->nlp_nvme_info &= ~NLP_NVME_NSLER;
460 ndlp->nlp_flag &= ~NLP_FIRSTBURST;
461
462 login_mbox = NULL;
463 link_mbox = NULL;
464 save_iocb = NULL;
465
466 /* Check for Nport to NPort pt2pt protocol */
467 if ((vport->fc_flag & FC_PT2PT) &&
468 !(vport->fc_flag & FC_PT2PT_PLOGI)) {
469 /* rcv'ed PLOGI decides what our NPortId will be */
470 if (phba->sli_rev == LPFC_SLI_REV4) {
471 vport->fc_myDID = bf_get(els_rsp64_sid,
472 &cmdiocb->wqe.xmit_els_rsp);
473 } else {
474 vport->fc_myDID = icmd->un.rcvels.parmRo;
475 }
476
477 /* If there is an outstanding FLOGI, abort it now.
478 * The remote NPort is not going to ACC our FLOGI
479 * if its already issuing a PLOGI for pt2pt mode.
480 * This indicates our FLOGI was dropped; however, we
481 * must have ACCed the remote NPorts FLOGI to us
482 * to make it here.
483 */
484 if (phba->hba_flag & HBA_FLOGI_OUTSTANDING)
485 lpfc_els_abort_flogi(phba);
486
487 ed_tov = be32_to_cpu(sp->cmn.e_d_tov);
488 if (sp->cmn.edtovResolution) {
489 /* E_D_TOV ticks are in nanoseconds */
490 ed_tov = (phba->fc_edtov + 999999) / 1000000;
491 }
492
493 /*
494 * For pt-to-pt, use the larger EDTOV
495 * RATOV = 2 * EDTOV
496 */
497 if (ed_tov > phba->fc_edtov)
498 phba->fc_edtov = ed_tov;
499 phba->fc_ratov = (2 * phba->fc_edtov) / 1000;
500
501 memcpy(&phba->fc_fabparam, sp, sizeof(struct serv_parm));
502
503 /* Issue CONFIG_LINK for SLI3 or REG_VFI for SLI4,
504 * to account for updated TOV's / parameters
505 */
506 if (phba->sli_rev == LPFC_SLI_REV4)
507 lpfc_issue_reg_vfi(vport);
508 else {
509 link_mbox = mempool_alloc(phba->mbox_mem_pool,
510 GFP_KERNEL);
511 if (!link_mbox)
512 goto out;
513 lpfc_config_link(phba, link_mbox);
514 link_mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
515 link_mbox->vport = vport;
516
517 /* The default completion handling for CONFIG_LINK
518 * does not require the ndlp so no reference is needed.
519 */
520 link_mbox->ctx_ndlp = ndlp;
521
522 rc = lpfc_sli_issue_mbox(phba, link_mbox, MBX_NOWAIT);
523 if (rc == MBX_NOT_FINISHED) {
524 mempool_free(link_mbox, phba->mbox_mem_pool);
525 goto out;
526 }
527 }
528
529 lpfc_can_disctmo(vport);
530 }
531
532 ndlp->nlp_flag &= ~NLP_SUPPRESS_RSP;
533 if ((phba->sli.sli_flag & LPFC_SLI_SUPPRESS_RSP) &&
534 sp->cmn.valid_vendor_ver_level) {
535 vid = be32_to_cpu(sp->un.vv.vid);
536 flag = be32_to_cpu(sp->un.vv.flags);
537 if ((vid == LPFC_VV_EMLX_ID) && (flag & LPFC_VV_SUPPRESS_RSP))
538 ndlp->nlp_flag |= NLP_SUPPRESS_RSP;
539 }
540
541 login_mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
542 if (!login_mbox)
543 goto out;
544
545 save_iocb = kzalloc(sizeof(*save_iocb), GFP_KERNEL);
546 if (!save_iocb)
547 goto out;
548
549 /* Save info from cmd IOCB to be used in rsp after all mbox completes */
550 memcpy((uint8_t *)save_iocb, (uint8_t *)cmdiocb,
551 sizeof(struct lpfc_iocbq));
552
553 /* Registering an existing RPI behaves differently for SLI3 vs SLI4 */
554 if (phba->sli_rev == LPFC_SLI_REV4)
555 lpfc_unreg_rpi(vport, ndlp);
556
557 /* Issue REG_LOGIN first, before ACCing the PLOGI, thus we will
558 * always be deferring the ACC.
559 */
560 if (phba->sli_rev == LPFC_SLI_REV4)
561 remote_did = bf_get(wqe_els_did, &wqe->xmit_els_rsp.wqe_dest);
562 else
563 remote_did = icmd->un.rcvels.remoteID;
564 rc = lpfc_reg_rpi(phba, vport->vpi, remote_did,
565 (uint8_t *)sp, login_mbox, ndlp->nlp_rpi);
566 if (rc)
567 goto out;
568
569 login_mbox->mbox_cmpl = lpfc_mbx_cmpl_reg_login;
570 login_mbox->vport = vport;
571
572 /*
573 * If there is an outstanding PLOGI issued, abort it before
574 * sending ACC rsp for received PLOGI. If pending plogi
575 * is not canceled here, the plogi will be rejected by
576 * remote port and will be retried. On a configuration with
577 * single discovery thread, this will cause a huge delay in
578 * discovery. Also this will cause multiple state machines
579 * running in parallel for this node.
580 * This only applies to a fabric environment.
581 */
582 if ((ndlp->nlp_state == NLP_STE_PLOGI_ISSUE) &&
583 (vport->fc_flag & FC_FABRIC)) {
584 /* software abort outstanding PLOGI */
585 lpfc_els_abort(phba, ndlp);
586 }
587
588 if ((vport->port_type == LPFC_NPIV_PORT &&
589 vport->cfg_restrict_login)) {
590
591 /* no deferred ACC */
592 kfree(save_iocb);
593
594 /* This is an NPIV SLI4 instance that does not need to register
595 * a default RPI.
596 */
597 if (phba->sli_rev == LPFC_SLI_REV4) {
598 lpfc_mbox_rsrc_cleanup(phba, login_mbox,
599 MBOX_THD_UNLOCKED);
600 login_mbox = NULL;
601 } else {
602 /* In order to preserve RPIs, we want to cleanup
603 * the default RPI the firmware created to rcv
604 * this ELS request. The only way to do this is
605 * to register, then unregister the RPI.
606 */
607 spin_lock_irq(&ndlp->lock);
608 ndlp->nlp_flag |= (NLP_RM_DFLT_RPI | NLP_ACC_REGLOGIN |
609 NLP_RCV_PLOGI);
610 spin_unlock_irq(&ndlp->lock);
611 }
612
613 stat.un.b.lsRjtRsnCode = LSRJT_INVALID_CMD;
614 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
615 rc = lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb,
616 ndlp, login_mbox);
617 if (rc && login_mbox)
618 lpfc_mbox_rsrc_cleanup(phba, login_mbox,
619 MBOX_THD_UNLOCKED);
620 return 1;
621 }
622
623 /* So the order here should be:
624 * SLI3 pt2pt
625 * Issue CONFIG_LINK mbox
626 * CONFIG_LINK cmpl
627 * SLI4 pt2pt
628 * Issue REG_VFI mbox
629 * REG_VFI cmpl
630 * SLI4
631 * Issue UNREG RPI mbx
632 * UNREG RPI cmpl
633 * Issue REG_RPI mbox
634 * REG RPI cmpl
635 * Issue PLOGI ACC
636 * PLOGI ACC cmpl
637 */
638 login_mbox->mbox_cmpl = lpfc_defer_plogi_acc;
639 login_mbox->ctx_ndlp = lpfc_nlp_get(ndlp);
640 if (!login_mbox->ctx_ndlp)
641 goto out;
642
643 login_mbox->context3 = save_iocb; /* For PLOGI ACC */
644
645 spin_lock_irq(&ndlp->lock);
646 ndlp->nlp_flag |= (NLP_ACC_REGLOGIN | NLP_RCV_PLOGI);
647 spin_unlock_irq(&ndlp->lock);
648
649 /* Start the ball rolling by issuing REG_LOGIN here */
650 rc = lpfc_sli_issue_mbox(phba, login_mbox, MBX_NOWAIT);
651 if (rc == MBX_NOT_FINISHED) {
652 lpfc_nlp_put(ndlp);
653 goto out;
654 }
655 lpfc_nlp_set_state(vport, ndlp, NLP_STE_REG_LOGIN_ISSUE);
656
657 return 1;
658 out:
659 kfree(save_iocb);
660 if (login_mbox)
661 mempool_free(login_mbox, phba->mbox_mem_pool);
662
663 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
664 stat.un.b.lsRjtRsnCodeExp = LSEXP_OUT_OF_RESOURCE;
665 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
666 return 0;
667 }
668
669 /**
670 * lpfc_mbx_cmpl_resume_rpi - Resume RPI completion routine
671 * @phba: pointer to lpfc hba data structure.
672 * @mboxq: pointer to mailbox object
673 *
674 * This routine is invoked to issue a completion to a rcv'ed
675 * ADISC or PDISC after the paused RPI has been resumed.
676 **/
677 static void
lpfc_mbx_cmpl_resume_rpi(struct lpfc_hba * phba,LPFC_MBOXQ_t * mboxq)678 lpfc_mbx_cmpl_resume_rpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
679 {
680 struct lpfc_vport *vport;
681 struct lpfc_iocbq *elsiocb;
682 struct lpfc_nodelist *ndlp;
683 uint32_t cmd;
684
685 elsiocb = (struct lpfc_iocbq *)mboxq->ctx_buf;
686 ndlp = (struct lpfc_nodelist *)mboxq->ctx_ndlp;
687 vport = mboxq->vport;
688 cmd = elsiocb->drvrTimeout;
689
690 if (cmd == ELS_CMD_ADISC) {
691 lpfc_els_rsp_adisc_acc(vport, elsiocb, ndlp);
692 } else {
693 lpfc_els_rsp_acc(vport, ELS_CMD_PLOGI, elsiocb,
694 ndlp, NULL);
695 }
696
697 /* This nlp_put pairs with lpfc_sli4_resume_rpi */
698 lpfc_nlp_put(ndlp);
699
700 kfree(elsiocb);
701 mempool_free(mboxq, phba->mbox_mem_pool);
702 }
703
704 static int
lpfc_rcv_padisc(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,struct lpfc_iocbq * cmdiocb)705 lpfc_rcv_padisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
706 struct lpfc_iocbq *cmdiocb)
707 {
708 struct lpfc_hba *phba = vport->phba;
709 struct lpfc_iocbq *elsiocb;
710 struct lpfc_dmabuf *pcmd;
711 struct serv_parm *sp;
712 struct lpfc_name *pnn, *ppn;
713 struct ls_rjt stat;
714 ADISC *ap;
715 uint32_t *lp;
716 uint32_t cmd;
717
718 pcmd = cmdiocb->cmd_dmabuf;
719 lp = (uint32_t *) pcmd->virt;
720
721 cmd = *lp++;
722 if (cmd == ELS_CMD_ADISC) {
723 ap = (ADISC *) lp;
724 pnn = (struct lpfc_name *) & ap->nodeName;
725 ppn = (struct lpfc_name *) & ap->portName;
726 } else {
727 sp = (struct serv_parm *) lp;
728 pnn = (struct lpfc_name *) & sp->nodeName;
729 ppn = (struct lpfc_name *) & sp->portName;
730 }
731
732 if (get_job_ulpstatus(phba, cmdiocb) == 0 &&
733 lpfc_check_adisc(vport, ndlp, pnn, ppn)) {
734
735 /*
736 * As soon as we send ACC, the remote NPort can
737 * start sending us data. Thus, for SLI4 we must
738 * resume the RPI before the ACC goes out.
739 */
740 if (vport->phba->sli_rev == LPFC_SLI_REV4) {
741 elsiocb = kmalloc(sizeof(struct lpfc_iocbq),
742 GFP_KERNEL);
743 if (elsiocb) {
744 /* Save info from cmd IOCB used in rsp */
745 memcpy((uint8_t *)elsiocb, (uint8_t *)cmdiocb,
746 sizeof(struct lpfc_iocbq));
747
748 /* Save the ELS cmd */
749 elsiocb->drvrTimeout = cmd;
750
751 lpfc_sli4_resume_rpi(ndlp,
752 lpfc_mbx_cmpl_resume_rpi, elsiocb);
753 goto out;
754 }
755 }
756
757 if (cmd == ELS_CMD_ADISC) {
758 lpfc_els_rsp_adisc_acc(vport, cmdiocb, ndlp);
759 } else {
760 lpfc_els_rsp_acc(vport, ELS_CMD_PLOGI, cmdiocb,
761 ndlp, NULL);
762 }
763 out:
764 /* If we are authenticated, move to the proper state.
765 * It is possible an ADISC arrived and the remote nport
766 * is already in MAPPED or UNMAPPED state. Catch this
767 * condition and don't set the nlp_state again because
768 * it causes an unnecessary transport unregister/register.
769 *
770 * Nodes marked for ADISC will move MAPPED or UNMAPPED state
771 * after issuing ADISC
772 */
773 if (ndlp->nlp_type & (NLP_FCP_TARGET | NLP_NVME_TARGET)) {
774 if ((ndlp->nlp_state != NLP_STE_MAPPED_NODE) &&
775 !(ndlp->nlp_flag & NLP_NPR_ADISC))
776 lpfc_nlp_set_state(vport, ndlp,
777 NLP_STE_MAPPED_NODE);
778 }
779
780 return 1;
781 }
782 /* Reject this request because invalid parameters */
783 stat.un.b.lsRjtRsvd0 = 0;
784 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
785 stat.un.b.lsRjtRsnCodeExp = LSEXP_SPARM_OPTIONS;
786 stat.un.b.vendorUnique = 0;
787 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
788
789 /* 1 sec timeout */
790 mod_timer(&ndlp->nlp_delayfunc, jiffies + msecs_to_jiffies(1000));
791
792 spin_lock_irq(&ndlp->lock);
793 ndlp->nlp_flag |= NLP_DELAY_TMO;
794 spin_unlock_irq(&ndlp->lock);
795 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
796 ndlp->nlp_prev_state = ndlp->nlp_state;
797 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
798 return 0;
799 }
800
801 static int
lpfc_rcv_logo(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,struct lpfc_iocbq * cmdiocb,uint32_t els_cmd)802 lpfc_rcv_logo(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
803 struct lpfc_iocbq *cmdiocb, uint32_t els_cmd)
804 {
805 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
806 struct lpfc_hba *phba = vport->phba;
807 struct lpfc_vport **vports;
808 int i, active_vlink_present = 0 ;
809
810 /* Put ndlp in NPR state with 1 sec timeout for plogi, ACC logo */
811 /* Only call LOGO ACC for first LOGO, this avoids sending unnecessary
812 * PLOGIs during LOGO storms from a device.
813 */
814 spin_lock_irq(&ndlp->lock);
815 ndlp->nlp_flag |= NLP_LOGO_ACC;
816 spin_unlock_irq(&ndlp->lock);
817 if (els_cmd == ELS_CMD_PRLO)
818 lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
819 else
820 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
821
822 /* This clause allows the initiator to ACC the LOGO back to the
823 * Fabric Domain Controller. It does deliberately skip all other
824 * steps because some fabrics send RDP requests after logging out
825 * from the initiator.
826 */
827 if (ndlp->nlp_type & NLP_FABRIC &&
828 ((ndlp->nlp_DID & WELL_KNOWN_DID_MASK) != WELL_KNOWN_DID_MASK))
829 return 0;
830
831 /* Notify transport of connectivity loss to trigger cleanup. */
832 if (phba->nvmet_support &&
833 ndlp->nlp_state == NLP_STE_UNMAPPED_NODE)
834 lpfc_nvmet_invalidate_host(phba, ndlp);
835
836 if (ndlp->nlp_DID == Fabric_DID) {
837 if (vport->port_state <= LPFC_FDISC ||
838 vport->fc_flag & FC_PT2PT)
839 goto out;
840 lpfc_linkdown_port(vport);
841 spin_lock_irq(shost->host_lock);
842 vport->fc_flag |= FC_VPORT_LOGO_RCVD;
843 spin_unlock_irq(shost->host_lock);
844 vports = lpfc_create_vport_work_array(phba);
845 if (vports) {
846 for (i = 0; i <= phba->max_vports && vports[i] != NULL;
847 i++) {
848 if ((!(vports[i]->fc_flag &
849 FC_VPORT_LOGO_RCVD)) &&
850 (vports[i]->port_state > LPFC_FDISC)) {
851 active_vlink_present = 1;
852 break;
853 }
854 }
855 lpfc_destroy_vport_work_array(phba, vports);
856 }
857
858 /*
859 * Don't re-instantiate if vport is marked for deletion.
860 * If we are here first then vport_delete is going to wait
861 * for discovery to complete.
862 */
863 if (!(vport->load_flag & FC_UNLOADING) &&
864 active_vlink_present) {
865 /*
866 * If there are other active VLinks present,
867 * re-instantiate the Vlink using FDISC.
868 */
869 mod_timer(&ndlp->nlp_delayfunc,
870 jiffies + msecs_to_jiffies(1000));
871 spin_lock_irq(&ndlp->lock);
872 ndlp->nlp_flag |= NLP_DELAY_TMO;
873 spin_unlock_irq(&ndlp->lock);
874 ndlp->nlp_last_elscmd = ELS_CMD_FDISC;
875 vport->port_state = LPFC_FDISC;
876 } else {
877 spin_lock_irq(shost->host_lock);
878 phba->pport->fc_flag &= ~FC_LOGO_RCVD_DID_CHNG;
879 spin_unlock_irq(shost->host_lock);
880 lpfc_retry_pport_discovery(phba);
881 }
882 } else {
883 lpfc_printf_vlog(vport, KERN_INFO,
884 LOG_NODE | LOG_ELS | LOG_DISCOVERY,
885 "3203 LOGO recover nport x%06x state x%x "
886 "ntype x%x fc_flag x%x\n",
887 ndlp->nlp_DID, ndlp->nlp_state,
888 ndlp->nlp_type, vport->fc_flag);
889
890 /* Special cases for rports that recover post LOGO. */
891 if ((!(ndlp->nlp_type == NLP_FABRIC) &&
892 (ndlp->nlp_type & (NLP_FCP_TARGET | NLP_NVME_TARGET) ||
893 vport->fc_flag & FC_PT2PT)) ||
894 (ndlp->nlp_state >= NLP_STE_ADISC_ISSUE ||
895 ndlp->nlp_state <= NLP_STE_PRLI_ISSUE)) {
896 mod_timer(&ndlp->nlp_delayfunc,
897 jiffies + msecs_to_jiffies(1000 * 1));
898 spin_lock_irq(&ndlp->lock);
899 ndlp->nlp_flag |= NLP_DELAY_TMO;
900 spin_unlock_irq(&ndlp->lock);
901 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
902 lpfc_printf_vlog(vport, KERN_INFO,
903 LOG_NODE | LOG_ELS | LOG_DISCOVERY,
904 "3204 Start nlpdelay on DID x%06x "
905 "nflag x%x lastels x%x ref cnt %u",
906 ndlp->nlp_DID, ndlp->nlp_flag,
907 ndlp->nlp_last_elscmd,
908 kref_read(&ndlp->kref));
909 }
910 }
911 out:
912 /* Unregister from backend, could have been skipped due to ADISC */
913 lpfc_nlp_unreg_node(vport, ndlp);
914
915 ndlp->nlp_prev_state = ndlp->nlp_state;
916 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
917
918 spin_lock_irq(&ndlp->lock);
919 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
920 spin_unlock_irq(&ndlp->lock);
921 /* The driver has to wait until the ACC completes before it continues
922 * processing the LOGO. The action will resume in
923 * lpfc_cmpl_els_logo_acc routine. Since part of processing includes an
924 * unreg_login, the driver waits so the ACC does not get aborted.
925 */
926 return 0;
927 }
928
929 static uint32_t
lpfc_rcv_prli_support_check(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,struct lpfc_iocbq * cmdiocb)930 lpfc_rcv_prli_support_check(struct lpfc_vport *vport,
931 struct lpfc_nodelist *ndlp,
932 struct lpfc_iocbq *cmdiocb)
933 {
934 struct ls_rjt stat;
935 uint32_t *payload;
936 uint32_t cmd;
937
938 payload = cmdiocb->cmd_dmabuf->virt;
939 cmd = *payload;
940 if (vport->phba->nvmet_support) {
941 /* Must be a NVME PRLI */
942 if (cmd == ELS_CMD_PRLI)
943 goto out;
944 } else {
945 /* Initiator mode. */
946 if (!vport->nvmei_support && (cmd == ELS_CMD_NVMEPRLI))
947 goto out;
948 }
949 return 1;
950 out:
951 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NVME_DISC,
952 "6115 Rcv PRLI (%x) check failed: ndlp rpi %d "
953 "state x%x flags x%x\n",
954 cmd, ndlp->nlp_rpi, ndlp->nlp_state,
955 ndlp->nlp_flag);
956 memset(&stat, 0, sizeof(struct ls_rjt));
957 stat.un.b.lsRjtRsnCode = LSRJT_CMD_UNSUPPORTED;
958 stat.un.b.lsRjtRsnCodeExp = LSEXP_REQ_UNSUPPORTED;
959 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb,
960 ndlp, NULL);
961 return 0;
962 }
963
964 static void
lpfc_rcv_prli(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,struct lpfc_iocbq * cmdiocb)965 lpfc_rcv_prli(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
966 struct lpfc_iocbq *cmdiocb)
967 {
968 struct lpfc_hba *phba = vport->phba;
969 struct lpfc_dmabuf *pcmd;
970 uint32_t *lp;
971 PRLI *npr;
972 struct fc_rport *rport = ndlp->rport;
973 u32 roles;
974
975 pcmd = cmdiocb->cmd_dmabuf;
976 lp = (uint32_t *)pcmd->virt;
977 npr = (PRLI *)((uint8_t *)lp + sizeof(uint32_t));
978
979 if ((npr->prliType == PRLI_FCP_TYPE) ||
980 (npr->prliType == PRLI_NVME_TYPE)) {
981 if (npr->initiatorFunc) {
982 if (npr->prliType == PRLI_FCP_TYPE)
983 ndlp->nlp_type |= NLP_FCP_INITIATOR;
984 if (npr->prliType == PRLI_NVME_TYPE)
985 ndlp->nlp_type |= NLP_NVME_INITIATOR;
986 }
987 if (npr->targetFunc) {
988 if (npr->prliType == PRLI_FCP_TYPE)
989 ndlp->nlp_type |= NLP_FCP_TARGET;
990 if (npr->prliType == PRLI_NVME_TYPE)
991 ndlp->nlp_type |= NLP_NVME_TARGET;
992 if (npr->writeXferRdyDis)
993 ndlp->nlp_flag |= NLP_FIRSTBURST;
994 }
995 if (npr->Retry && ndlp->nlp_type &
996 (NLP_FCP_INITIATOR | NLP_FCP_TARGET))
997 ndlp->nlp_fcp_info |= NLP_FCP_2_DEVICE;
998
999 if (npr->Retry && phba->nsler &&
1000 ndlp->nlp_type & (NLP_NVME_INITIATOR | NLP_NVME_TARGET))
1001 ndlp->nlp_nvme_info |= NLP_NVME_NSLER;
1002
1003
1004 /* If this driver is in nvme target mode, set the ndlp's fc4
1005 * type to NVME provided the PRLI response claims NVME FC4
1006 * type. Target mode does not issue gft_id so doesn't get
1007 * the fc4 type set until now.
1008 */
1009 if (phba->nvmet_support && (npr->prliType == PRLI_NVME_TYPE)) {
1010 ndlp->nlp_fc4_type |= NLP_FC4_NVME;
1011 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1012 }
1013
1014 /* Fabric Controllers send FCP PRLI as an initiator but should
1015 * not get recognized as FCP type and registered with transport.
1016 */
1017 if (npr->prliType == PRLI_FCP_TYPE &&
1018 !(ndlp->nlp_type & NLP_FABRIC))
1019 ndlp->nlp_fc4_type |= NLP_FC4_FCP;
1020 }
1021 if (rport) {
1022 /* We need to update the rport role values */
1023 roles = FC_RPORT_ROLE_UNKNOWN;
1024 if (ndlp->nlp_type & NLP_FCP_INITIATOR)
1025 roles |= FC_RPORT_ROLE_FCP_INITIATOR;
1026 if (ndlp->nlp_type & NLP_FCP_TARGET)
1027 roles |= FC_RPORT_ROLE_FCP_TARGET;
1028
1029 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
1030 "rport rolechg: role:x%x did:x%x flg:x%x",
1031 roles, ndlp->nlp_DID, ndlp->nlp_flag);
1032
1033 if (vport->cfg_enable_fc4_type != LPFC_ENABLE_NVME)
1034 fc_remote_port_rolechg(rport, roles);
1035 }
1036 }
1037
1038 static uint32_t
lpfc_disc_set_adisc(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp)1039 lpfc_disc_set_adisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
1040 {
1041 if (!(ndlp->nlp_flag & NLP_RPI_REGISTERED)) {
1042 spin_lock_irq(&ndlp->lock);
1043 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
1044 spin_unlock_irq(&ndlp->lock);
1045 return 0;
1046 }
1047
1048 if (!(vport->fc_flag & FC_PT2PT)) {
1049 /* Check config parameter use-adisc or FCP-2 */
1050 if (vport->cfg_use_adisc && ((vport->fc_flag & FC_RSCN_MODE) ||
1051 ((ndlp->nlp_fcp_info & NLP_FCP_2_DEVICE) &&
1052 (ndlp->nlp_type & NLP_FCP_TARGET)))) {
1053 spin_lock_irq(&ndlp->lock);
1054 ndlp->nlp_flag |= NLP_NPR_ADISC;
1055 spin_unlock_irq(&ndlp->lock);
1056 return 1;
1057 }
1058 }
1059
1060 spin_lock_irq(&ndlp->lock);
1061 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
1062 spin_unlock_irq(&ndlp->lock);
1063 lpfc_unreg_rpi(vport, ndlp);
1064 return 0;
1065 }
1066
1067 /**
1068 * lpfc_release_rpi - Release a RPI by issuing unreg_login mailbox cmd.
1069 * @phba : Pointer to lpfc_hba structure.
1070 * @vport: Pointer to lpfc_vport structure.
1071 * @ndlp: Pointer to lpfc_nodelist structure.
1072 * @rpi : rpi to be release.
1073 *
1074 * This function will send a unreg_login mailbox command to the firmware
1075 * to release a rpi.
1076 **/
1077 static void
lpfc_release_rpi(struct lpfc_hba * phba,struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,uint16_t rpi)1078 lpfc_release_rpi(struct lpfc_hba *phba, struct lpfc_vport *vport,
1079 struct lpfc_nodelist *ndlp, uint16_t rpi)
1080 {
1081 LPFC_MBOXQ_t *pmb;
1082 int rc;
1083
1084 /* If there is already an UNREG in progress for this ndlp,
1085 * no need to queue up another one.
1086 */
1087 if (ndlp->nlp_flag & NLP_UNREG_INP) {
1088 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
1089 "1435 release_rpi SKIP UNREG x%x on "
1090 "NPort x%x deferred x%x flg x%x "
1091 "Data: x%px\n",
1092 ndlp->nlp_rpi, ndlp->nlp_DID,
1093 ndlp->nlp_defer_did,
1094 ndlp->nlp_flag, ndlp);
1095 return;
1096 }
1097
1098 pmb = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool,
1099 GFP_KERNEL);
1100 if (!pmb)
1101 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
1102 "2796 mailbox memory allocation failed \n");
1103 else {
1104 lpfc_unreg_login(phba, vport->vpi, rpi, pmb);
1105 pmb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
1106 pmb->vport = vport;
1107 pmb->ctx_ndlp = lpfc_nlp_get(ndlp);
1108 if (!pmb->ctx_ndlp) {
1109 mempool_free(pmb, phba->mbox_mem_pool);
1110 return;
1111 }
1112
1113 if (((ndlp->nlp_DID & Fabric_DID_MASK) != Fabric_DID_MASK) &&
1114 (!(vport->fc_flag & FC_OFFLINE_MODE)))
1115 ndlp->nlp_flag |= NLP_UNREG_INP;
1116
1117 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
1118 "1437 release_rpi UNREG x%x "
1119 "on NPort x%x flg x%x\n",
1120 ndlp->nlp_rpi, ndlp->nlp_DID, ndlp->nlp_flag);
1121
1122 rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);
1123 if (rc == MBX_NOT_FINISHED) {
1124 lpfc_nlp_put(ndlp);
1125 mempool_free(pmb, phba->mbox_mem_pool);
1126 }
1127 }
1128 }
1129
1130 static uint32_t
lpfc_disc_illegal(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1131 lpfc_disc_illegal(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1132 void *arg, uint32_t evt)
1133 {
1134 struct lpfc_hba *phba;
1135 LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg;
1136 uint16_t rpi;
1137
1138 phba = vport->phba;
1139 /* Release the RPI if reglogin completing */
1140 if (!(phba->pport->load_flag & FC_UNLOADING) &&
1141 (evt == NLP_EVT_CMPL_REG_LOGIN) &&
1142 (!pmb->u.mb.mbxStatus)) {
1143 rpi = pmb->u.mb.un.varWords[0];
1144 lpfc_release_rpi(phba, vport, ndlp, rpi);
1145 }
1146 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
1147 "0271 Illegal State Transition: node x%x "
1148 "event x%x, state x%x Data: x%x x%x\n",
1149 ndlp->nlp_DID, evt, ndlp->nlp_state, ndlp->nlp_rpi,
1150 ndlp->nlp_flag);
1151 return ndlp->nlp_state;
1152 }
1153
1154 static uint32_t
lpfc_cmpl_plogi_illegal(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1155 lpfc_cmpl_plogi_illegal(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1156 void *arg, uint32_t evt)
1157 {
1158 /* This transition is only legal if we previously
1159 * rcv'ed a PLOGI. Since we don't want 2 discovery threads
1160 * working on the same NPortID, do nothing for this thread
1161 * to stop it.
1162 */
1163 if (!(ndlp->nlp_flag & NLP_RCV_PLOGI)) {
1164 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
1165 "0272 Illegal State Transition: node x%x "
1166 "event x%x, state x%x Data: x%x x%x\n",
1167 ndlp->nlp_DID, evt, ndlp->nlp_state,
1168 ndlp->nlp_rpi, ndlp->nlp_flag);
1169 }
1170 return ndlp->nlp_state;
1171 }
1172
1173 /* Start of Discovery State Machine routines */
1174
1175 static uint32_t
lpfc_rcv_plogi_unused_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1176 lpfc_rcv_plogi_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1177 void *arg, uint32_t evt)
1178 {
1179 struct lpfc_iocbq *cmdiocb;
1180
1181 cmdiocb = (struct lpfc_iocbq *) arg;
1182
1183 if (lpfc_rcv_plogi(vport, ndlp, cmdiocb)) {
1184 return ndlp->nlp_state;
1185 }
1186 return NLP_STE_FREED_NODE;
1187 }
1188
1189 static uint32_t
lpfc_rcv_els_unused_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1190 lpfc_rcv_els_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1191 void *arg, uint32_t evt)
1192 {
1193 lpfc_issue_els_logo(vport, ndlp, 0);
1194 return ndlp->nlp_state;
1195 }
1196
1197 static uint32_t
lpfc_rcv_logo_unused_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1198 lpfc_rcv_logo_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1199 void *arg, uint32_t evt)
1200 {
1201 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1202
1203 spin_lock_irq(&ndlp->lock);
1204 ndlp->nlp_flag |= NLP_LOGO_ACC;
1205 spin_unlock_irq(&ndlp->lock);
1206 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
1207
1208 return ndlp->nlp_state;
1209 }
1210
1211 static uint32_t
lpfc_cmpl_logo_unused_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1212 lpfc_cmpl_logo_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1213 void *arg, uint32_t evt)
1214 {
1215 return NLP_STE_FREED_NODE;
1216 }
1217
1218 static uint32_t
lpfc_device_rm_unused_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1219 lpfc_device_rm_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1220 void *arg, uint32_t evt)
1221 {
1222 return NLP_STE_FREED_NODE;
1223 }
1224
1225 static uint32_t
lpfc_device_recov_unused_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1226 lpfc_device_recov_unused_node(struct lpfc_vport *vport,
1227 struct lpfc_nodelist *ndlp,
1228 void *arg, uint32_t evt)
1229 {
1230 return ndlp->nlp_state;
1231 }
1232
1233 static uint32_t
lpfc_rcv_plogi_plogi_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1234 lpfc_rcv_plogi_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1235 void *arg, uint32_t evt)
1236 {
1237 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1238 struct lpfc_hba *phba = vport->phba;
1239 struct lpfc_iocbq *cmdiocb = arg;
1240 struct lpfc_dmabuf *pcmd = cmdiocb->cmd_dmabuf;
1241 uint32_t *lp = (uint32_t *) pcmd->virt;
1242 struct serv_parm *sp = (struct serv_parm *) (lp + 1);
1243 struct ls_rjt stat;
1244 int port_cmp;
1245
1246 memset(&stat, 0, sizeof (struct ls_rjt));
1247
1248 /* For a PLOGI, we only accept if our portname is less
1249 * than the remote portname.
1250 */
1251 phba->fc_stat.elsLogiCol++;
1252 port_cmp = memcmp(&vport->fc_portname, &sp->portName,
1253 sizeof(struct lpfc_name));
1254
1255 if (port_cmp >= 0) {
1256 /* Reject this request because the remote node will accept
1257 ours */
1258 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
1259 stat.un.b.lsRjtRsnCodeExp = LSEXP_CMD_IN_PROGRESS;
1260 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
1261 NULL);
1262 } else {
1263 if (lpfc_rcv_plogi(vport, ndlp, cmdiocb) &&
1264 (ndlp->nlp_flag & NLP_NPR_2B_DISC) &&
1265 (vport->num_disc_nodes)) {
1266 spin_lock_irq(&ndlp->lock);
1267 ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
1268 spin_unlock_irq(&ndlp->lock);
1269 /* Check if there are more PLOGIs to be sent */
1270 lpfc_more_plogi(vport);
1271 if (vport->num_disc_nodes == 0) {
1272 spin_lock_irq(shost->host_lock);
1273 vport->fc_flag &= ~FC_NDISC_ACTIVE;
1274 spin_unlock_irq(shost->host_lock);
1275 lpfc_can_disctmo(vport);
1276 lpfc_end_rscn(vport);
1277 }
1278 }
1279 } /* If our portname was less */
1280
1281 return ndlp->nlp_state;
1282 }
1283
1284 static uint32_t
lpfc_rcv_prli_plogi_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1285 lpfc_rcv_prli_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1286 void *arg, uint32_t evt)
1287 {
1288 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1289 struct ls_rjt stat;
1290
1291 memset(&stat, 0, sizeof (struct ls_rjt));
1292 stat.un.b.lsRjtRsnCode = LSRJT_LOGICAL_BSY;
1293 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
1294 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
1295 return ndlp->nlp_state;
1296 }
1297
1298 static uint32_t
lpfc_rcv_logo_plogi_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1299 lpfc_rcv_logo_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1300 void *arg, uint32_t evt)
1301 {
1302 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1303
1304 /* Retrieve RPI from LOGO IOCB. RPI is used for CMD_ABORT_XRI_CN */
1305 if (vport->phba->sli_rev == LPFC_SLI_REV3)
1306 ndlp->nlp_rpi = cmdiocb->iocb.ulpIoTag;
1307 /* software abort outstanding PLOGI */
1308 lpfc_els_abort(vport->phba, ndlp);
1309
1310 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1311 return ndlp->nlp_state;
1312 }
1313
1314 static uint32_t
lpfc_rcv_els_plogi_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1315 lpfc_rcv_els_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1316 void *arg, uint32_t evt)
1317 {
1318 struct lpfc_hba *phba = vport->phba;
1319 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1320
1321 /* software abort outstanding PLOGI */
1322 lpfc_els_abort(phba, ndlp);
1323
1324 if (evt == NLP_EVT_RCV_LOGO) {
1325 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
1326 } else {
1327 lpfc_issue_els_logo(vport, ndlp, 0);
1328 }
1329
1330 /* Put ndlp in npr state set plogi timer for 1 sec */
1331 mod_timer(&ndlp->nlp_delayfunc, jiffies + msecs_to_jiffies(1000 * 1));
1332 spin_lock_irq(&ndlp->lock);
1333 ndlp->nlp_flag |= NLP_DELAY_TMO;
1334 spin_unlock_irq(&ndlp->lock);
1335 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
1336 ndlp->nlp_prev_state = NLP_STE_PLOGI_ISSUE;
1337 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1338
1339 return ndlp->nlp_state;
1340 }
1341
1342 static uint32_t
lpfc_cmpl_plogi_plogi_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1343 lpfc_cmpl_plogi_plogi_issue(struct lpfc_vport *vport,
1344 struct lpfc_nodelist *ndlp,
1345 void *arg,
1346 uint32_t evt)
1347 {
1348 struct lpfc_hba *phba = vport->phba;
1349 struct lpfc_iocbq *cmdiocb, *rspiocb;
1350 struct lpfc_dmabuf *pcmd, *prsp;
1351 uint32_t *lp;
1352 uint32_t vid, flag;
1353 struct serv_parm *sp;
1354 uint32_t ed_tov;
1355 LPFC_MBOXQ_t *mbox;
1356 int rc;
1357 u32 ulp_status;
1358 u32 did;
1359
1360 cmdiocb = (struct lpfc_iocbq *) arg;
1361 rspiocb = cmdiocb->rsp_iocb;
1362
1363 ulp_status = get_job_ulpstatus(phba, rspiocb);
1364
1365 if (ndlp->nlp_flag & NLP_ACC_REGLOGIN) {
1366 /* Recovery from PLOGI collision logic */
1367 return ndlp->nlp_state;
1368 }
1369
1370 if (ulp_status)
1371 goto out;
1372
1373 pcmd = cmdiocb->cmd_dmabuf;
1374
1375 prsp = list_get_first(&pcmd->list, struct lpfc_dmabuf, list);
1376 if (!prsp)
1377 goto out;
1378
1379 lp = (uint32_t *) prsp->virt;
1380 sp = (struct serv_parm *) ((uint8_t *) lp + sizeof (uint32_t));
1381
1382 /* Some switches have FDMI servers returning 0 for WWN */
1383 if ((ndlp->nlp_DID != FDMI_DID) &&
1384 (wwn_to_u64(sp->portName.u.wwn) == 0 ||
1385 wwn_to_u64(sp->nodeName.u.wwn) == 0)) {
1386 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
1387 "0142 PLOGI RSP: Invalid WWN.\n");
1388 goto out;
1389 }
1390 if (!lpfc_check_sparm(vport, ndlp, sp, CLASS3, 0))
1391 goto out;
1392 /* PLOGI chkparm OK */
1393 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
1394 "0121 PLOGI chkparm OK Data: x%x x%x x%x x%x\n",
1395 ndlp->nlp_DID, ndlp->nlp_state,
1396 ndlp->nlp_flag, ndlp->nlp_rpi);
1397 if (vport->cfg_fcp_class == 2 && (sp->cls2.classValid))
1398 ndlp->nlp_fcp_info |= CLASS2;
1399 else
1400 ndlp->nlp_fcp_info |= CLASS3;
1401
1402 ndlp->nlp_class_sup = 0;
1403 if (sp->cls1.classValid)
1404 ndlp->nlp_class_sup |= FC_COS_CLASS1;
1405 if (sp->cls2.classValid)
1406 ndlp->nlp_class_sup |= FC_COS_CLASS2;
1407 if (sp->cls3.classValid)
1408 ndlp->nlp_class_sup |= FC_COS_CLASS3;
1409 if (sp->cls4.classValid)
1410 ndlp->nlp_class_sup |= FC_COS_CLASS4;
1411 ndlp->nlp_maxframe =
1412 ((sp->cmn.bbRcvSizeMsb & 0x0F) << 8) | sp->cmn.bbRcvSizeLsb;
1413
1414 if ((vport->fc_flag & FC_PT2PT) &&
1415 (vport->fc_flag & FC_PT2PT_PLOGI)) {
1416 ed_tov = be32_to_cpu(sp->cmn.e_d_tov);
1417 if (sp->cmn.edtovResolution) {
1418 /* E_D_TOV ticks are in nanoseconds */
1419 ed_tov = (phba->fc_edtov + 999999) / 1000000;
1420 }
1421
1422 ndlp->nlp_flag &= ~NLP_SUPPRESS_RSP;
1423 if ((phba->sli.sli_flag & LPFC_SLI_SUPPRESS_RSP) &&
1424 sp->cmn.valid_vendor_ver_level) {
1425 vid = be32_to_cpu(sp->un.vv.vid);
1426 flag = be32_to_cpu(sp->un.vv.flags);
1427 if ((vid == LPFC_VV_EMLX_ID) &&
1428 (flag & LPFC_VV_SUPPRESS_RSP))
1429 ndlp->nlp_flag |= NLP_SUPPRESS_RSP;
1430 }
1431
1432 /*
1433 * Use the larger EDTOV
1434 * RATOV = 2 * EDTOV for pt-to-pt
1435 */
1436 if (ed_tov > phba->fc_edtov)
1437 phba->fc_edtov = ed_tov;
1438 phba->fc_ratov = (2 * phba->fc_edtov) / 1000;
1439
1440 memcpy(&phba->fc_fabparam, sp, sizeof(struct serv_parm));
1441
1442 /* Issue config_link / reg_vfi to account for updated TOV's */
1443 if (phba->sli_rev == LPFC_SLI_REV4) {
1444 lpfc_issue_reg_vfi(vport);
1445 } else {
1446 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1447 if (!mbox) {
1448 lpfc_printf_vlog(vport, KERN_ERR,
1449 LOG_TRACE_EVENT,
1450 "0133 PLOGI: no memory "
1451 "for config_link "
1452 "Data: x%x x%x x%x x%x\n",
1453 ndlp->nlp_DID, ndlp->nlp_state,
1454 ndlp->nlp_flag, ndlp->nlp_rpi);
1455 goto out;
1456 }
1457
1458 lpfc_config_link(phba, mbox);
1459
1460 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
1461 mbox->vport = vport;
1462 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
1463 if (rc == MBX_NOT_FINISHED) {
1464 mempool_free(mbox, phba->mbox_mem_pool);
1465 goto out;
1466 }
1467 }
1468 }
1469
1470 lpfc_unreg_rpi(vport, ndlp);
1471
1472 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1473 if (!mbox) {
1474 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
1475 "0018 PLOGI: no memory for reg_login "
1476 "Data: x%x x%x x%x x%x\n",
1477 ndlp->nlp_DID, ndlp->nlp_state,
1478 ndlp->nlp_flag, ndlp->nlp_rpi);
1479 goto out;
1480 }
1481
1482 did = get_job_els_rsp64_did(phba, cmdiocb);
1483
1484 if (lpfc_reg_rpi(phba, vport->vpi, did,
1485 (uint8_t *) sp, mbox, ndlp->nlp_rpi) == 0) {
1486 switch (ndlp->nlp_DID) {
1487 case NameServer_DID:
1488 mbox->mbox_cmpl = lpfc_mbx_cmpl_ns_reg_login;
1489 /* Fabric Controller Node needs these parameters. */
1490 memcpy(&ndlp->fc_sparam, sp, sizeof(struct serv_parm));
1491 break;
1492 case FDMI_DID:
1493 mbox->mbox_cmpl = lpfc_mbx_cmpl_fdmi_reg_login;
1494 break;
1495 default:
1496 ndlp->nlp_flag |= NLP_REG_LOGIN_SEND;
1497 mbox->mbox_cmpl = lpfc_mbx_cmpl_reg_login;
1498 }
1499
1500 mbox->ctx_ndlp = lpfc_nlp_get(ndlp);
1501 if (!mbox->ctx_ndlp)
1502 goto out;
1503
1504 mbox->vport = vport;
1505 if (lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT)
1506 != MBX_NOT_FINISHED) {
1507 lpfc_nlp_set_state(vport, ndlp,
1508 NLP_STE_REG_LOGIN_ISSUE);
1509 return ndlp->nlp_state;
1510 }
1511 if (ndlp->nlp_flag & NLP_REG_LOGIN_SEND)
1512 ndlp->nlp_flag &= ~NLP_REG_LOGIN_SEND;
1513 /* decrement node reference count to the failed mbox
1514 * command
1515 */
1516 lpfc_nlp_put(ndlp);
1517 lpfc_mbox_rsrc_cleanup(phba, mbox, MBOX_THD_UNLOCKED);
1518 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
1519 "0134 PLOGI: cannot issue reg_login "
1520 "Data: x%x x%x x%x x%x\n",
1521 ndlp->nlp_DID, ndlp->nlp_state,
1522 ndlp->nlp_flag, ndlp->nlp_rpi);
1523 } else {
1524 mempool_free(mbox, phba->mbox_mem_pool);
1525
1526 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
1527 "0135 PLOGI: cannot format reg_login "
1528 "Data: x%x x%x x%x x%x\n",
1529 ndlp->nlp_DID, ndlp->nlp_state,
1530 ndlp->nlp_flag, ndlp->nlp_rpi);
1531 }
1532
1533
1534 out:
1535 if (ndlp->nlp_DID == NameServer_DID) {
1536 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
1537 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
1538 "0261 Cannot Register NameServer login\n");
1539 }
1540
1541 /*
1542 ** In case the node reference counter does not go to zero, ensure that
1543 ** the stale state for the node is not processed.
1544 */
1545
1546 ndlp->nlp_prev_state = ndlp->nlp_state;
1547 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1548 return NLP_STE_FREED_NODE;
1549 }
1550
1551 static uint32_t
lpfc_cmpl_logo_plogi_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1552 lpfc_cmpl_logo_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1553 void *arg, uint32_t evt)
1554 {
1555 return ndlp->nlp_state;
1556 }
1557
1558 static uint32_t
lpfc_cmpl_reglogin_plogi_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1559 lpfc_cmpl_reglogin_plogi_issue(struct lpfc_vport *vport,
1560 struct lpfc_nodelist *ndlp, void *arg, uint32_t evt)
1561 {
1562 struct lpfc_hba *phba;
1563 LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg;
1564 MAILBOX_t *mb = &pmb->u.mb;
1565 uint16_t rpi;
1566
1567 phba = vport->phba;
1568 /* Release the RPI */
1569 if (!(phba->pport->load_flag & FC_UNLOADING) &&
1570 !mb->mbxStatus) {
1571 rpi = pmb->u.mb.un.varWords[0];
1572 lpfc_release_rpi(phba, vport, ndlp, rpi);
1573 }
1574 return ndlp->nlp_state;
1575 }
1576
1577 static uint32_t
lpfc_device_rm_plogi_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1578 lpfc_device_rm_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1579 void *arg, uint32_t evt)
1580 {
1581 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1582 spin_lock_irq(&ndlp->lock);
1583 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1584 spin_unlock_irq(&ndlp->lock);
1585 return ndlp->nlp_state;
1586 } else {
1587 /* software abort outstanding PLOGI */
1588 lpfc_els_abort(vport->phba, ndlp);
1589
1590 lpfc_drop_node(vport, ndlp);
1591 return NLP_STE_FREED_NODE;
1592 }
1593 }
1594
1595 static uint32_t
lpfc_device_recov_plogi_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1596 lpfc_device_recov_plogi_issue(struct lpfc_vport *vport,
1597 struct lpfc_nodelist *ndlp,
1598 void *arg,
1599 uint32_t evt)
1600 {
1601 struct lpfc_hba *phba = vport->phba;
1602
1603 /* Don't do anything that will mess up processing of the
1604 * previous RSCN.
1605 */
1606 if (vport->fc_flag & FC_RSCN_DEFERRED)
1607 return ndlp->nlp_state;
1608
1609 /* software abort outstanding PLOGI */
1610 lpfc_els_abort(phba, ndlp);
1611
1612 ndlp->nlp_prev_state = NLP_STE_PLOGI_ISSUE;
1613 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1614 spin_lock_irq(&ndlp->lock);
1615 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1616 spin_unlock_irq(&ndlp->lock);
1617
1618 return ndlp->nlp_state;
1619 }
1620
1621 static uint32_t
lpfc_rcv_plogi_adisc_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1622 lpfc_rcv_plogi_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1623 void *arg, uint32_t evt)
1624 {
1625 struct lpfc_hba *phba = vport->phba;
1626 struct lpfc_iocbq *cmdiocb;
1627
1628 /* software abort outstanding ADISC */
1629 lpfc_els_abort(phba, ndlp);
1630
1631 cmdiocb = (struct lpfc_iocbq *) arg;
1632
1633 if (lpfc_rcv_plogi(vport, ndlp, cmdiocb)) {
1634 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1635 spin_lock_irq(&ndlp->lock);
1636 ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
1637 spin_unlock_irq(&ndlp->lock);
1638 if (vport->num_disc_nodes)
1639 lpfc_more_adisc(vport);
1640 }
1641 return ndlp->nlp_state;
1642 }
1643 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1644 lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
1645 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
1646
1647 return ndlp->nlp_state;
1648 }
1649
1650 static uint32_t
lpfc_rcv_prli_adisc_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1651 lpfc_rcv_prli_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1652 void *arg, uint32_t evt)
1653 {
1654 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1655
1656 if (lpfc_rcv_prli_support_check(vport, ndlp, cmdiocb))
1657 lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1658 return ndlp->nlp_state;
1659 }
1660
1661 static uint32_t
lpfc_rcv_logo_adisc_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1662 lpfc_rcv_logo_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1663 void *arg, uint32_t evt)
1664 {
1665 struct lpfc_hba *phba = vport->phba;
1666 struct lpfc_iocbq *cmdiocb;
1667
1668 cmdiocb = (struct lpfc_iocbq *) arg;
1669
1670 /* software abort outstanding ADISC */
1671 lpfc_els_abort(phba, ndlp);
1672
1673 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1674 return ndlp->nlp_state;
1675 }
1676
1677 static uint32_t
lpfc_rcv_padisc_adisc_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1678 lpfc_rcv_padisc_adisc_issue(struct lpfc_vport *vport,
1679 struct lpfc_nodelist *ndlp,
1680 void *arg, uint32_t evt)
1681 {
1682 struct lpfc_iocbq *cmdiocb;
1683
1684 cmdiocb = (struct lpfc_iocbq *) arg;
1685
1686 lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1687 return ndlp->nlp_state;
1688 }
1689
1690 static uint32_t
lpfc_rcv_prlo_adisc_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1691 lpfc_rcv_prlo_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1692 void *arg, uint32_t evt)
1693 {
1694 struct lpfc_iocbq *cmdiocb;
1695
1696 cmdiocb = (struct lpfc_iocbq *) arg;
1697
1698 /* Treat like rcv logo */
1699 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_PRLO);
1700 return ndlp->nlp_state;
1701 }
1702
1703 static uint32_t
lpfc_cmpl_adisc_adisc_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1704 lpfc_cmpl_adisc_adisc_issue(struct lpfc_vport *vport,
1705 struct lpfc_nodelist *ndlp,
1706 void *arg, uint32_t evt)
1707 {
1708 struct lpfc_hba *phba = vport->phba;
1709 struct lpfc_iocbq *cmdiocb, *rspiocb;
1710 ADISC *ap;
1711 int rc;
1712 u32 ulp_status;
1713
1714 cmdiocb = (struct lpfc_iocbq *) arg;
1715 rspiocb = cmdiocb->rsp_iocb;
1716
1717 ulp_status = get_job_ulpstatus(phba, rspiocb);
1718
1719 ap = (ADISC *)lpfc_check_elscmpl_iocb(phba, cmdiocb, rspiocb);
1720
1721 if ((ulp_status) ||
1722 (!lpfc_check_adisc(vport, ndlp, &ap->nodeName, &ap->portName))) {
1723 /* 1 sec timeout */
1724 mod_timer(&ndlp->nlp_delayfunc,
1725 jiffies + msecs_to_jiffies(1000));
1726 spin_lock_irq(&ndlp->lock);
1727 ndlp->nlp_flag |= NLP_DELAY_TMO;
1728 spin_unlock_irq(&ndlp->lock);
1729 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
1730
1731 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1732 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1733 lpfc_unreg_rpi(vport, ndlp);
1734 return ndlp->nlp_state;
1735 }
1736
1737 if (phba->sli_rev == LPFC_SLI_REV4) {
1738 rc = lpfc_sli4_resume_rpi(ndlp, NULL, NULL);
1739 if (rc) {
1740 /* Stay in state and retry. */
1741 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1742 return ndlp->nlp_state;
1743 }
1744 }
1745
1746 if (ndlp->nlp_type & NLP_FCP_TARGET)
1747 ndlp->nlp_fc4_type |= NLP_FC4_FCP;
1748
1749 if (ndlp->nlp_type & NLP_NVME_TARGET)
1750 ndlp->nlp_fc4_type |= NLP_FC4_NVME;
1751
1752 if (ndlp->nlp_type & (NLP_FCP_TARGET | NLP_NVME_TARGET)) {
1753 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1754 lpfc_nlp_set_state(vport, ndlp, NLP_STE_MAPPED_NODE);
1755 } else {
1756 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1757 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1758 }
1759
1760 return ndlp->nlp_state;
1761 }
1762
1763 static uint32_t
lpfc_device_rm_adisc_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1764 lpfc_device_rm_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1765 void *arg, uint32_t evt)
1766 {
1767 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1768 spin_lock_irq(&ndlp->lock);
1769 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1770 spin_unlock_irq(&ndlp->lock);
1771 return ndlp->nlp_state;
1772 } else {
1773 /* software abort outstanding ADISC */
1774 lpfc_els_abort(vport->phba, ndlp);
1775
1776 lpfc_drop_node(vport, ndlp);
1777 return NLP_STE_FREED_NODE;
1778 }
1779 }
1780
1781 static uint32_t
lpfc_device_recov_adisc_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1782 lpfc_device_recov_adisc_issue(struct lpfc_vport *vport,
1783 struct lpfc_nodelist *ndlp,
1784 void *arg,
1785 uint32_t evt)
1786 {
1787 struct lpfc_hba *phba = vport->phba;
1788
1789 /* Don't do anything that will mess up processing of the
1790 * previous RSCN.
1791 */
1792 if (vport->fc_flag & FC_RSCN_DEFERRED)
1793 return ndlp->nlp_state;
1794
1795 /* software abort outstanding ADISC */
1796 lpfc_els_abort(phba, ndlp);
1797
1798 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1799 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1800 spin_lock_irq(&ndlp->lock);
1801 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1802 spin_unlock_irq(&ndlp->lock);
1803 lpfc_disc_set_adisc(vport, ndlp);
1804 return ndlp->nlp_state;
1805 }
1806
1807 static uint32_t
lpfc_rcv_plogi_reglogin_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1808 lpfc_rcv_plogi_reglogin_issue(struct lpfc_vport *vport,
1809 struct lpfc_nodelist *ndlp,
1810 void *arg,
1811 uint32_t evt)
1812 {
1813 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1814
1815 lpfc_rcv_plogi(vport, ndlp, cmdiocb);
1816 return ndlp->nlp_state;
1817 }
1818
1819 static uint32_t
lpfc_rcv_prli_reglogin_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1820 lpfc_rcv_prli_reglogin_issue(struct lpfc_vport *vport,
1821 struct lpfc_nodelist *ndlp,
1822 void *arg,
1823 uint32_t evt)
1824 {
1825 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1826 struct ls_rjt stat;
1827
1828 if (!lpfc_rcv_prli_support_check(vport, ndlp, cmdiocb)) {
1829 return ndlp->nlp_state;
1830 }
1831 if (vport->phba->nvmet_support) {
1832 /* NVME Target mode. Handle and respond to the PRLI and
1833 * transition to UNMAPPED provided the RPI has completed
1834 * registration.
1835 */
1836 if (ndlp->nlp_flag & NLP_RPI_REGISTERED) {
1837 lpfc_rcv_prli(vport, ndlp, cmdiocb);
1838 lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1839 } else {
1840 /* RPI registration has not completed. Reject the PRLI
1841 * to prevent an illegal state transition when the
1842 * rpi registration does complete.
1843 */
1844 memset(&stat, 0, sizeof(struct ls_rjt));
1845 stat.un.b.lsRjtRsnCode = LSRJT_LOGICAL_BSY;
1846 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
1847 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb,
1848 ndlp, NULL);
1849 return ndlp->nlp_state;
1850 }
1851 } else {
1852 /* Initiator mode. */
1853 lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1854 }
1855 return ndlp->nlp_state;
1856 }
1857
1858 static uint32_t
lpfc_rcv_logo_reglogin_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1859 lpfc_rcv_logo_reglogin_issue(struct lpfc_vport *vport,
1860 struct lpfc_nodelist *ndlp,
1861 void *arg,
1862 uint32_t evt)
1863 {
1864 struct lpfc_hba *phba = vport->phba;
1865 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1866 LPFC_MBOXQ_t *mb;
1867 LPFC_MBOXQ_t *nextmb;
1868
1869 cmdiocb = (struct lpfc_iocbq *) arg;
1870
1871 /* cleanup any ndlp on mbox q waiting for reglogin cmpl */
1872 if ((mb = phba->sli.mbox_active)) {
1873 if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) &&
1874 (ndlp == (struct lpfc_nodelist *)mb->ctx_ndlp)) {
1875 ndlp->nlp_flag &= ~NLP_REG_LOGIN_SEND;
1876 lpfc_nlp_put(ndlp);
1877 mb->ctx_ndlp = NULL;
1878 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
1879 }
1880 }
1881
1882 spin_lock_irq(&phba->hbalock);
1883 list_for_each_entry_safe(mb, nextmb, &phba->sli.mboxq, list) {
1884 if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) &&
1885 (ndlp == (struct lpfc_nodelist *)mb->ctx_ndlp)) {
1886 ndlp->nlp_flag &= ~NLP_REG_LOGIN_SEND;
1887 lpfc_nlp_put(ndlp);
1888 list_del(&mb->list);
1889 phba->sli.mboxq_cnt--;
1890 lpfc_mbox_rsrc_cleanup(phba, mb, MBOX_THD_LOCKED);
1891 }
1892 }
1893 spin_unlock_irq(&phba->hbalock);
1894
1895 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1896 return ndlp->nlp_state;
1897 }
1898
1899 static uint32_t
lpfc_rcv_padisc_reglogin_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1900 lpfc_rcv_padisc_reglogin_issue(struct lpfc_vport *vport,
1901 struct lpfc_nodelist *ndlp,
1902 void *arg,
1903 uint32_t evt)
1904 {
1905 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1906
1907 lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1908 return ndlp->nlp_state;
1909 }
1910
1911 static uint32_t
lpfc_rcv_prlo_reglogin_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1912 lpfc_rcv_prlo_reglogin_issue(struct lpfc_vport *vport,
1913 struct lpfc_nodelist *ndlp,
1914 void *arg,
1915 uint32_t evt)
1916 {
1917 struct lpfc_iocbq *cmdiocb;
1918
1919 cmdiocb = (struct lpfc_iocbq *) arg;
1920 lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
1921 return ndlp->nlp_state;
1922 }
1923
1924 static uint32_t
lpfc_cmpl_reglogin_reglogin_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1925 lpfc_cmpl_reglogin_reglogin_issue(struct lpfc_vport *vport,
1926 struct lpfc_nodelist *ndlp,
1927 void *arg,
1928 uint32_t evt)
1929 {
1930 struct lpfc_hba *phba = vport->phba;
1931 LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg;
1932 MAILBOX_t *mb = &pmb->u.mb;
1933 uint32_t did = mb->un.varWords[1];
1934
1935 if (mb->mbxStatus) {
1936 /* RegLogin failed */
1937 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
1938 "0246 RegLogin failed Data: x%x x%x x%x x%x "
1939 "x%x\n",
1940 did, mb->mbxStatus, vport->port_state,
1941 mb->un.varRegLogin.vpi,
1942 mb->un.varRegLogin.rpi);
1943 /*
1944 * If RegLogin failed due to lack of HBA resources do not
1945 * retry discovery.
1946 */
1947 if (mb->mbxStatus == MBXERR_RPI_FULL) {
1948 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1949 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1950 return ndlp->nlp_state;
1951 }
1952
1953 /* Put ndlp in npr state set plogi timer for 1 sec */
1954 mod_timer(&ndlp->nlp_delayfunc,
1955 jiffies + msecs_to_jiffies(1000 * 1));
1956 spin_lock_irq(&ndlp->lock);
1957 ndlp->nlp_flag |= NLP_DELAY_TMO;
1958 spin_unlock_irq(&ndlp->lock);
1959 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
1960
1961 lpfc_issue_els_logo(vport, ndlp, 0);
1962 return ndlp->nlp_state;
1963 }
1964
1965 /* SLI4 ports have preallocated logical rpis. */
1966 if (phba->sli_rev < LPFC_SLI_REV4)
1967 ndlp->nlp_rpi = mb->un.varWords[0];
1968
1969 ndlp->nlp_flag |= NLP_RPI_REGISTERED;
1970
1971 /* Only if we are not a fabric nport do we issue PRLI */
1972 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
1973 "3066 RegLogin Complete on x%x x%x x%x\n",
1974 did, ndlp->nlp_type, ndlp->nlp_fc4_type);
1975 if (!(ndlp->nlp_type & NLP_FABRIC) &&
1976 (phba->nvmet_support == 0)) {
1977 /* The driver supports FCP and NVME concurrently. If the
1978 * ndlp's nlp_fc4_type is still zero, the driver doesn't
1979 * know what PRLI to send yet. Figure that out now and
1980 * call PRLI depending on the outcome.
1981 */
1982 if (vport->fc_flag & FC_PT2PT) {
1983 /* If we are pt2pt, there is no Fabric to determine
1984 * the FC4 type of the remote nport. So if NVME
1985 * is configured try it.
1986 */
1987 ndlp->nlp_fc4_type |= NLP_FC4_FCP;
1988 if ((!(vport->fc_flag & FC_PT2PT_NO_NVME)) &&
1989 (vport->cfg_enable_fc4_type == LPFC_ENABLE_BOTH ||
1990 vport->cfg_enable_fc4_type == LPFC_ENABLE_NVME)) {
1991 ndlp->nlp_fc4_type |= NLP_FC4_NVME;
1992 /* We need to update the localport also */
1993 lpfc_nvme_update_localport(vport);
1994 }
1995
1996 } else if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
1997 ndlp->nlp_fc4_type |= NLP_FC4_FCP;
1998
1999 } else if (ndlp->nlp_fc4_type == 0) {
2000 /* If we are only configured for FCP, the driver
2001 * should just issue PRLI for FCP. Otherwise issue
2002 * GFT_ID to determine if remote port supports NVME.
2003 */
2004 if (vport->cfg_enable_fc4_type != LPFC_ENABLE_FCP) {
2005 lpfc_ns_cmd(vport, SLI_CTNS_GFT_ID, 0,
2006 ndlp->nlp_DID);
2007 return ndlp->nlp_state;
2008 }
2009 ndlp->nlp_fc4_type = NLP_FC4_FCP;
2010 }
2011
2012 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
2013 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PRLI_ISSUE);
2014 if (lpfc_issue_els_prli(vport, ndlp, 0)) {
2015 lpfc_issue_els_logo(vport, ndlp, 0);
2016 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
2017 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
2018 }
2019 } else {
2020 if ((vport->fc_flag & FC_PT2PT) && phba->nvmet_support)
2021 phba->targetport->port_id = vport->fc_myDID;
2022
2023 /* Only Fabric ports should transition. NVME target
2024 * must complete PRLI.
2025 */
2026 if (ndlp->nlp_type & NLP_FABRIC) {
2027 ndlp->nlp_fc4_type &= ~NLP_FC4_FCP;
2028 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
2029 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
2030 }
2031 }
2032 return ndlp->nlp_state;
2033 }
2034
2035 static uint32_t
lpfc_device_rm_reglogin_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2036 lpfc_device_rm_reglogin_issue(struct lpfc_vport *vport,
2037 struct lpfc_nodelist *ndlp,
2038 void *arg,
2039 uint32_t evt)
2040 {
2041 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
2042 spin_lock_irq(&ndlp->lock);
2043 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
2044 spin_unlock_irq(&ndlp->lock);
2045 return ndlp->nlp_state;
2046 } else {
2047 lpfc_drop_node(vport, ndlp);
2048 return NLP_STE_FREED_NODE;
2049 }
2050 }
2051
2052 static uint32_t
lpfc_device_recov_reglogin_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2053 lpfc_device_recov_reglogin_issue(struct lpfc_vport *vport,
2054 struct lpfc_nodelist *ndlp,
2055 void *arg,
2056 uint32_t evt)
2057 {
2058 /* Don't do anything that will mess up processing of the
2059 * previous RSCN.
2060 */
2061 if (vport->fc_flag & FC_RSCN_DEFERRED)
2062 return ndlp->nlp_state;
2063
2064 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
2065 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
2066 spin_lock_irq(&ndlp->lock);
2067
2068 /* If we are a target we won't immediately transition into PRLI,
2069 * so if REG_LOGIN already completed we don't need to ignore it.
2070 */
2071 if (!(ndlp->nlp_flag & NLP_RPI_REGISTERED) ||
2072 !vport->phba->nvmet_support)
2073 ndlp->nlp_flag |= NLP_IGNR_REG_CMPL;
2074
2075 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
2076 spin_unlock_irq(&ndlp->lock);
2077 lpfc_disc_set_adisc(vport, ndlp);
2078 return ndlp->nlp_state;
2079 }
2080
2081 static uint32_t
lpfc_rcv_plogi_prli_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2082 lpfc_rcv_plogi_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2083 void *arg, uint32_t evt)
2084 {
2085 struct lpfc_iocbq *cmdiocb;
2086
2087 cmdiocb = (struct lpfc_iocbq *) arg;
2088
2089 lpfc_rcv_plogi(vport, ndlp, cmdiocb);
2090 return ndlp->nlp_state;
2091 }
2092
2093 static uint32_t
lpfc_rcv_prli_prli_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2094 lpfc_rcv_prli_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2095 void *arg, uint32_t evt)
2096 {
2097 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2098
2099 if (!lpfc_rcv_prli_support_check(vport, ndlp, cmdiocb))
2100 return ndlp->nlp_state;
2101 lpfc_rcv_prli(vport, ndlp, cmdiocb);
2102 lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
2103 return ndlp->nlp_state;
2104 }
2105
2106 static uint32_t
lpfc_rcv_logo_prli_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2107 lpfc_rcv_logo_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2108 void *arg, uint32_t evt)
2109 {
2110 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2111
2112 /* Software abort outstanding PRLI before sending acc */
2113 lpfc_els_abort(vport->phba, ndlp);
2114
2115 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
2116 return ndlp->nlp_state;
2117 }
2118
2119 static uint32_t
lpfc_rcv_padisc_prli_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2120 lpfc_rcv_padisc_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2121 void *arg, uint32_t evt)
2122 {
2123 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2124
2125 lpfc_rcv_padisc(vport, ndlp, cmdiocb);
2126 return ndlp->nlp_state;
2127 }
2128
2129 /* This routine is envoked when we rcv a PRLO request from a nport
2130 * we are logged into. We should send back a PRLO rsp setting the
2131 * appropriate bits.
2132 * NEXT STATE = PRLI_ISSUE
2133 */
2134 static uint32_t
lpfc_rcv_prlo_prli_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2135 lpfc_rcv_prlo_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2136 void *arg, uint32_t evt)
2137 {
2138 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2139
2140 lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
2141 return ndlp->nlp_state;
2142 }
2143
2144 static uint32_t
lpfc_cmpl_prli_prli_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2145 lpfc_cmpl_prli_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2146 void *arg, uint32_t evt)
2147 {
2148 struct lpfc_iocbq *cmdiocb, *rspiocb;
2149 struct lpfc_hba *phba = vport->phba;
2150 PRLI *npr;
2151 struct lpfc_nvme_prli *nvpr;
2152 void *temp_ptr;
2153 u32 ulp_status;
2154 bool acc_imode_sps = false;
2155
2156 cmdiocb = (struct lpfc_iocbq *) arg;
2157 rspiocb = cmdiocb->rsp_iocb;
2158
2159 ulp_status = get_job_ulpstatus(phba, rspiocb);
2160
2161 /* A solicited PRLI is either FCP or NVME. The PRLI cmd/rsp
2162 * format is different so NULL the two PRLI types so that the
2163 * driver correctly gets the correct context.
2164 */
2165 npr = NULL;
2166 nvpr = NULL;
2167 temp_ptr = lpfc_check_elscmpl_iocb(phba, cmdiocb, rspiocb);
2168 if (cmdiocb->cmd_flag & LPFC_PRLI_FCP_REQ)
2169 npr = (PRLI *) temp_ptr;
2170 else if (cmdiocb->cmd_flag & LPFC_PRLI_NVME_REQ)
2171 nvpr = (struct lpfc_nvme_prli *) temp_ptr;
2172
2173 if (ulp_status) {
2174 if ((vport->port_type == LPFC_NPIV_PORT) &&
2175 vport->cfg_restrict_login) {
2176 goto out;
2177 }
2178
2179 /* Adjust the nlp_type accordingly if the PRLI failed */
2180 if (npr)
2181 ndlp->nlp_fc4_type &= ~NLP_FC4_FCP;
2182 if (nvpr)
2183 ndlp->nlp_fc4_type &= ~NLP_FC4_NVME;
2184
2185 /* We can't set the DSM state till BOTH PRLIs complete */
2186 goto out_err;
2187 }
2188
2189 if (npr && npr->prliType == PRLI_FCP_TYPE) {
2190 lpfc_printf_vlog(vport, KERN_INFO,
2191 LOG_ELS | LOG_NODE | LOG_DISCOVERY,
2192 "6028 FCP NPR PRLI Cmpl Init %d Target %d "
2193 "EIP %d AccCode x%x\n",
2194 npr->initiatorFunc, npr->targetFunc,
2195 npr->estabImagePair, npr->acceptRspCode);
2196
2197 if (npr->acceptRspCode == PRLI_INV_SRV_PARM) {
2198 /* Strict initiators don't establish an image pair. */
2199 if (npr->initiatorFunc && !npr->targetFunc &&
2200 !npr->estabImagePair)
2201 acc_imode_sps = true;
2202 }
2203
2204 if (npr->acceptRspCode == PRLI_REQ_EXECUTED || acc_imode_sps) {
2205 if (npr->initiatorFunc)
2206 ndlp->nlp_type |= NLP_FCP_INITIATOR;
2207 if (npr->targetFunc) {
2208 ndlp->nlp_type |= NLP_FCP_TARGET;
2209 if (npr->writeXferRdyDis)
2210 ndlp->nlp_flag |= NLP_FIRSTBURST;
2211 }
2212 if (npr->Retry)
2213 ndlp->nlp_fcp_info |= NLP_FCP_2_DEVICE;
2214 }
2215 } else if (nvpr &&
2216 (bf_get_be32(prli_acc_rsp_code, nvpr) ==
2217 PRLI_REQ_EXECUTED) &&
2218 (bf_get_be32(prli_type_code, nvpr) ==
2219 PRLI_NVME_TYPE)) {
2220
2221 /* Complete setting up the remote ndlp personality. */
2222 if (bf_get_be32(prli_init, nvpr))
2223 ndlp->nlp_type |= NLP_NVME_INITIATOR;
2224
2225 if (phba->nsler && bf_get_be32(prli_nsler, nvpr) &&
2226 bf_get_be32(prli_conf, nvpr))
2227
2228 ndlp->nlp_nvme_info |= NLP_NVME_NSLER;
2229 else
2230 ndlp->nlp_nvme_info &= ~NLP_NVME_NSLER;
2231
2232 /* Target driver cannot solicit NVME FB. */
2233 if (bf_get_be32(prli_tgt, nvpr)) {
2234 /* Complete the nvme target roles. The transport
2235 * needs to know if the rport is capable of
2236 * discovery in addition to its role.
2237 */
2238 ndlp->nlp_type |= NLP_NVME_TARGET;
2239 if (bf_get_be32(prli_disc, nvpr))
2240 ndlp->nlp_type |= NLP_NVME_DISCOVERY;
2241
2242 /*
2243 * If prli_fba is set, the Target supports FirstBurst.
2244 * If prli_fb_sz is 0, the FirstBurst size is unlimited,
2245 * otherwise it defines the actual size supported by
2246 * the NVME Target.
2247 */
2248 if ((bf_get_be32(prli_fba, nvpr) == 1) &&
2249 (phba->cfg_nvme_enable_fb) &&
2250 (!phba->nvmet_support)) {
2251 /* Both sides support FB. The target's first
2252 * burst size is a 512 byte encoded value.
2253 */
2254 ndlp->nlp_flag |= NLP_FIRSTBURST;
2255 ndlp->nvme_fb_size = bf_get_be32(prli_fb_sz,
2256 nvpr);
2257
2258 /* Expressed in units of 512 bytes */
2259 if (ndlp->nvme_fb_size)
2260 ndlp->nvme_fb_size <<=
2261 LPFC_NVME_FB_SHIFT;
2262 else
2263 ndlp->nvme_fb_size = LPFC_NVME_MAX_FB;
2264 }
2265 }
2266
2267 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_DISC,
2268 "6029 NVME PRLI Cmpl w1 x%08x "
2269 "w4 x%08x w5 x%08x flag x%x, "
2270 "fcp_info x%x nlp_type x%x\n",
2271 be32_to_cpu(nvpr->word1),
2272 be32_to_cpu(nvpr->word4),
2273 be32_to_cpu(nvpr->word5),
2274 ndlp->nlp_flag, ndlp->nlp_fcp_info,
2275 ndlp->nlp_type);
2276 }
2277 if (!(ndlp->nlp_type & NLP_FCP_TARGET) &&
2278 (vport->port_type == LPFC_NPIV_PORT) &&
2279 vport->cfg_restrict_login) {
2280 out:
2281 spin_lock_irq(&ndlp->lock);
2282 ndlp->nlp_flag |= NLP_TARGET_REMOVE;
2283 spin_unlock_irq(&ndlp->lock);
2284 lpfc_issue_els_logo(vport, ndlp, 0);
2285
2286 ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
2287 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
2288 return ndlp->nlp_state;
2289 }
2290
2291 out_err:
2292 /* The ndlp state cannot move to MAPPED or UNMAPPED before all PRLIs
2293 * are complete.
2294 */
2295 if (ndlp->fc4_prli_sent == 0) {
2296 ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
2297 if (ndlp->nlp_type & (NLP_FCP_TARGET | NLP_NVME_TARGET))
2298 lpfc_nlp_set_state(vport, ndlp, NLP_STE_MAPPED_NODE);
2299 else if (ndlp->nlp_type &
2300 (NLP_FCP_INITIATOR | NLP_NVME_INITIATOR))
2301 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
2302 } else
2303 lpfc_printf_vlog(vport,
2304 KERN_INFO, LOG_ELS,
2305 "3067 PRLI's still outstanding "
2306 "on x%06x - count %d, Pend Node Mode "
2307 "transition...\n",
2308 ndlp->nlp_DID, ndlp->fc4_prli_sent);
2309
2310 return ndlp->nlp_state;
2311 }
2312
2313 /*! lpfc_device_rm_prli_issue
2314 *
2315 * \pre
2316 * \post
2317 * \param phba
2318 * \param ndlp
2319 * \param arg
2320 * \param evt
2321 * \return uint32_t
2322 *
2323 * \b Description:
2324 * This routine is envoked when we a request to remove a nport we are in the
2325 * process of PRLIing. We should software abort outstanding prli, unreg
2326 * login, send a logout. We will change node state to UNUSED_NODE, put it
2327 * on plogi list so it can be freed when LOGO completes.
2328 *
2329 */
2330
2331 static uint32_t
lpfc_device_rm_prli_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2332 lpfc_device_rm_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2333 void *arg, uint32_t evt)
2334 {
2335 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
2336 spin_lock_irq(&ndlp->lock);
2337 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
2338 spin_unlock_irq(&ndlp->lock);
2339 return ndlp->nlp_state;
2340 } else {
2341 /* software abort outstanding PLOGI */
2342 lpfc_els_abort(vport->phba, ndlp);
2343
2344 lpfc_drop_node(vport, ndlp);
2345 return NLP_STE_FREED_NODE;
2346 }
2347 }
2348
2349
2350 /*! lpfc_device_recov_prli_issue
2351 *
2352 * \pre
2353 * \post
2354 * \param phba
2355 * \param ndlp
2356 * \param arg
2357 * \param evt
2358 * \return uint32_t
2359 *
2360 * \b Description:
2361 * The routine is envoked when the state of a device is unknown, like
2362 * during a link down. We should remove the nodelist entry from the
2363 * unmapped list, issue a UNREG_LOGIN, do a software abort of the
2364 * outstanding PRLI command, then free the node entry.
2365 */
2366 static uint32_t
lpfc_device_recov_prli_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2367 lpfc_device_recov_prli_issue(struct lpfc_vport *vport,
2368 struct lpfc_nodelist *ndlp,
2369 void *arg,
2370 uint32_t evt)
2371 {
2372 struct lpfc_hba *phba = vport->phba;
2373
2374 /* Don't do anything that will mess up processing of the
2375 * previous RSCN.
2376 */
2377 if (vport->fc_flag & FC_RSCN_DEFERRED)
2378 return ndlp->nlp_state;
2379
2380 /* software abort outstanding PRLI */
2381 lpfc_els_abort(phba, ndlp);
2382
2383 ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
2384 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
2385 spin_lock_irq(&ndlp->lock);
2386 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
2387 spin_unlock_irq(&ndlp->lock);
2388 lpfc_disc_set_adisc(vport, ndlp);
2389 return ndlp->nlp_state;
2390 }
2391
2392 static uint32_t
lpfc_rcv_plogi_logo_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2393 lpfc_rcv_plogi_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2394 void *arg, uint32_t evt)
2395 {
2396 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *)arg;
2397 struct ls_rjt stat;
2398
2399 memset(&stat, 0, sizeof(struct ls_rjt));
2400 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
2401 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
2402 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
2403 return ndlp->nlp_state;
2404 }
2405
2406 static uint32_t
lpfc_rcv_prli_logo_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2407 lpfc_rcv_prli_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2408 void *arg, uint32_t evt)
2409 {
2410 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *)arg;
2411 struct ls_rjt stat;
2412
2413 memset(&stat, 0, sizeof(struct ls_rjt));
2414 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
2415 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
2416 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
2417 return ndlp->nlp_state;
2418 }
2419
2420 static uint32_t
lpfc_rcv_logo_logo_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2421 lpfc_rcv_logo_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2422 void *arg, uint32_t evt)
2423 {
2424 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *)arg;
2425
2426 spin_lock_irq(&ndlp->lock);
2427 ndlp->nlp_flag |= NLP_LOGO_ACC;
2428 spin_unlock_irq(&ndlp->lock);
2429 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
2430 return ndlp->nlp_state;
2431 }
2432
2433 static uint32_t
lpfc_rcv_padisc_logo_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2434 lpfc_rcv_padisc_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2435 void *arg, uint32_t evt)
2436 {
2437 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *)arg;
2438 struct ls_rjt stat;
2439
2440 memset(&stat, 0, sizeof(struct ls_rjt));
2441 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
2442 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
2443 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
2444 return ndlp->nlp_state;
2445 }
2446
2447 static uint32_t
lpfc_rcv_prlo_logo_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2448 lpfc_rcv_prlo_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2449 void *arg, uint32_t evt)
2450 {
2451 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *)arg;
2452 struct ls_rjt stat;
2453
2454 memset(&stat, 0, sizeof(struct ls_rjt));
2455 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
2456 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
2457 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
2458 return ndlp->nlp_state;
2459 }
2460
2461 static uint32_t
lpfc_cmpl_logo_logo_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2462 lpfc_cmpl_logo_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2463 void *arg, uint32_t evt)
2464 {
2465 ndlp->nlp_prev_state = NLP_STE_LOGO_ISSUE;
2466 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
2467 spin_lock_irq(&ndlp->lock);
2468 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
2469 spin_unlock_irq(&ndlp->lock);
2470 lpfc_disc_set_adisc(vport, ndlp);
2471 return ndlp->nlp_state;
2472 }
2473
2474 static uint32_t
lpfc_device_rm_logo_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2475 lpfc_device_rm_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2476 void *arg, uint32_t evt)
2477 {
2478 /*
2479 * DevLoss has timed out and is calling for Device Remove.
2480 * In this case, abort the LOGO and cleanup the ndlp
2481 */
2482
2483 lpfc_unreg_rpi(vport, ndlp);
2484 /* software abort outstanding PLOGI */
2485 lpfc_els_abort(vport->phba, ndlp);
2486 lpfc_drop_node(vport, ndlp);
2487 return NLP_STE_FREED_NODE;
2488 }
2489
2490 static uint32_t
lpfc_device_recov_logo_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2491 lpfc_device_recov_logo_issue(struct lpfc_vport *vport,
2492 struct lpfc_nodelist *ndlp,
2493 void *arg, uint32_t evt)
2494 {
2495 /*
2496 * Device Recovery events have no meaning for a node with a LOGO
2497 * outstanding. The LOGO has to complete first and handle the
2498 * node from that point.
2499 */
2500 return ndlp->nlp_state;
2501 }
2502
2503 static uint32_t
lpfc_rcv_plogi_unmap_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2504 lpfc_rcv_plogi_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2505 void *arg, uint32_t evt)
2506 {
2507 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2508
2509 lpfc_rcv_plogi(vport, ndlp, cmdiocb);
2510 return ndlp->nlp_state;
2511 }
2512
2513 static uint32_t
lpfc_rcv_prli_unmap_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2514 lpfc_rcv_prli_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2515 void *arg, uint32_t evt)
2516 {
2517 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2518
2519 if (!lpfc_rcv_prli_support_check(vport, ndlp, cmdiocb))
2520 return ndlp->nlp_state;
2521
2522 lpfc_rcv_prli(vport, ndlp, cmdiocb);
2523 lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
2524 return ndlp->nlp_state;
2525 }
2526
2527 static uint32_t
lpfc_rcv_logo_unmap_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2528 lpfc_rcv_logo_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2529 void *arg, uint32_t evt)
2530 {
2531 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2532
2533 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
2534 return ndlp->nlp_state;
2535 }
2536
2537 static uint32_t
lpfc_rcv_padisc_unmap_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2538 lpfc_rcv_padisc_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2539 void *arg, uint32_t evt)
2540 {
2541 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2542
2543 lpfc_rcv_padisc(vport, ndlp, cmdiocb);
2544 return ndlp->nlp_state;
2545 }
2546
2547 static uint32_t
lpfc_rcv_prlo_unmap_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2548 lpfc_rcv_prlo_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2549 void *arg, uint32_t evt)
2550 {
2551 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2552
2553 lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
2554 return ndlp->nlp_state;
2555 }
2556
2557 static uint32_t
lpfc_device_rm_unmap_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2558 lpfc_device_rm_unmap_node(struct lpfc_vport *vport,
2559 struct lpfc_nodelist *ndlp,
2560 void *arg,
2561 uint32_t evt)
2562 {
2563 lpfc_drop_node(vport, ndlp);
2564 return NLP_STE_FREED_NODE;
2565 }
2566
2567 static uint32_t
lpfc_device_recov_unmap_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2568 lpfc_device_recov_unmap_node(struct lpfc_vport *vport,
2569 struct lpfc_nodelist *ndlp,
2570 void *arg,
2571 uint32_t evt)
2572 {
2573 ndlp->nlp_prev_state = NLP_STE_UNMAPPED_NODE;
2574 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
2575 spin_lock_irq(&ndlp->lock);
2576 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
2577 ndlp->nlp_fc4_type &= ~(NLP_FC4_FCP | NLP_FC4_NVME);
2578 spin_unlock_irq(&ndlp->lock);
2579 lpfc_disc_set_adisc(vport, ndlp);
2580
2581 return ndlp->nlp_state;
2582 }
2583
2584 static uint32_t
lpfc_rcv_plogi_mapped_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2585 lpfc_rcv_plogi_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2586 void *arg, uint32_t evt)
2587 {
2588 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2589
2590 lpfc_rcv_plogi(vport, ndlp, cmdiocb);
2591 return ndlp->nlp_state;
2592 }
2593
2594 static uint32_t
lpfc_rcv_prli_mapped_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2595 lpfc_rcv_prli_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2596 void *arg, uint32_t evt)
2597 {
2598 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2599
2600 if (!lpfc_rcv_prli_support_check(vport, ndlp, cmdiocb))
2601 return ndlp->nlp_state;
2602 lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
2603 return ndlp->nlp_state;
2604 }
2605
2606 static uint32_t
lpfc_rcv_logo_mapped_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2607 lpfc_rcv_logo_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2608 void *arg, uint32_t evt)
2609 {
2610 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2611
2612 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
2613 return ndlp->nlp_state;
2614 }
2615
2616 static uint32_t
lpfc_rcv_padisc_mapped_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2617 lpfc_rcv_padisc_mapped_node(struct lpfc_vport *vport,
2618 struct lpfc_nodelist *ndlp,
2619 void *arg, uint32_t evt)
2620 {
2621 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2622
2623 lpfc_rcv_padisc(vport, ndlp, cmdiocb);
2624 return ndlp->nlp_state;
2625 }
2626
2627 static uint32_t
lpfc_rcv_prlo_mapped_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2628 lpfc_rcv_prlo_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2629 void *arg, uint32_t evt)
2630 {
2631 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2632
2633 /* flush the target */
2634 lpfc_sli_abort_iocb(vport, ndlp->nlp_sid, 0, LPFC_CTX_TGT);
2635
2636 /* Treat like rcv logo */
2637 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_PRLO);
2638 return ndlp->nlp_state;
2639 }
2640
2641 static uint32_t
lpfc_device_recov_mapped_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2642 lpfc_device_recov_mapped_node(struct lpfc_vport *vport,
2643 struct lpfc_nodelist *ndlp,
2644 void *arg,
2645 uint32_t evt)
2646 {
2647 lpfc_disc_set_adisc(vport, ndlp);
2648
2649 ndlp->nlp_prev_state = NLP_STE_MAPPED_NODE;
2650 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
2651 spin_lock_irq(&ndlp->lock);
2652 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
2653 ndlp->nlp_fc4_type &= ~(NLP_FC4_FCP | NLP_FC4_NVME);
2654 spin_unlock_irq(&ndlp->lock);
2655 return ndlp->nlp_state;
2656 }
2657
2658 static uint32_t
lpfc_rcv_plogi_npr_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2659 lpfc_rcv_plogi_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2660 void *arg, uint32_t evt)
2661 {
2662 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2663
2664 /* Ignore PLOGI if we have an outstanding LOGO */
2665 if (ndlp->nlp_flag & (NLP_LOGO_SND | NLP_LOGO_ACC))
2666 return ndlp->nlp_state;
2667 if (lpfc_rcv_plogi(vport, ndlp, cmdiocb)) {
2668 lpfc_cancel_retry_delay_tmo(vport, ndlp);
2669 spin_lock_irq(&ndlp->lock);
2670 ndlp->nlp_flag &= ~(NLP_NPR_ADISC | NLP_NPR_2B_DISC);
2671 spin_unlock_irq(&ndlp->lock);
2672 } else if (!(ndlp->nlp_flag & NLP_NPR_2B_DISC)) {
2673 /* send PLOGI immediately, move to PLOGI issue state */
2674 if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) {
2675 ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
2676 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
2677 lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
2678 }
2679 }
2680 return ndlp->nlp_state;
2681 }
2682
2683 static uint32_t
lpfc_rcv_prli_npr_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2684 lpfc_rcv_prli_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2685 void *arg, uint32_t evt)
2686 {
2687 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2688 struct ls_rjt stat;
2689
2690 memset(&stat, 0, sizeof (struct ls_rjt));
2691 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
2692 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
2693 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
2694
2695 if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) {
2696 /*
2697 * ADISC nodes will be handled in regular discovery path after
2698 * receiving response from NS.
2699 *
2700 * For other nodes, Send PLOGI to trigger an implicit LOGO.
2701 */
2702 if (!(ndlp->nlp_flag & NLP_NPR_ADISC)) {
2703 ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
2704 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
2705 lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
2706 }
2707 }
2708 return ndlp->nlp_state;
2709 }
2710
2711 static uint32_t
lpfc_rcv_logo_npr_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2712 lpfc_rcv_logo_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2713 void *arg, uint32_t evt)
2714 {
2715 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2716
2717 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
2718 return ndlp->nlp_state;
2719 }
2720
2721 static uint32_t
lpfc_rcv_padisc_npr_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2722 lpfc_rcv_padisc_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2723 void *arg, uint32_t evt)
2724 {
2725 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2726
2727 lpfc_rcv_padisc(vport, ndlp, cmdiocb);
2728 /*
2729 * Do not start discovery if discovery is about to start
2730 * or discovery in progress for this node. Starting discovery
2731 * here will affect the counting of discovery threads.
2732 */
2733 if (!(ndlp->nlp_flag & NLP_DELAY_TMO) &&
2734 !(ndlp->nlp_flag & NLP_NPR_2B_DISC)) {
2735 /*
2736 * ADISC nodes will be handled in regular discovery path after
2737 * receiving response from NS.
2738 *
2739 * For other nodes, Send PLOGI to trigger an implicit LOGO.
2740 */
2741 if (!(ndlp->nlp_flag & NLP_NPR_ADISC)) {
2742 ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
2743 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
2744 lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
2745 }
2746 }
2747 return ndlp->nlp_state;
2748 }
2749
2750 static uint32_t
lpfc_rcv_prlo_npr_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2751 lpfc_rcv_prlo_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2752 void *arg, uint32_t evt)
2753 {
2754 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2755
2756 spin_lock_irq(&ndlp->lock);
2757 ndlp->nlp_flag |= NLP_LOGO_ACC;
2758 spin_unlock_irq(&ndlp->lock);
2759
2760 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
2761
2762 if ((ndlp->nlp_flag & NLP_DELAY_TMO) == 0) {
2763 mod_timer(&ndlp->nlp_delayfunc,
2764 jiffies + msecs_to_jiffies(1000 * 1));
2765 spin_lock_irq(&ndlp->lock);
2766 ndlp->nlp_flag |= NLP_DELAY_TMO;
2767 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
2768 spin_unlock_irq(&ndlp->lock);
2769 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
2770 } else {
2771 spin_lock_irq(&ndlp->lock);
2772 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
2773 spin_unlock_irq(&ndlp->lock);
2774 }
2775 return ndlp->nlp_state;
2776 }
2777
2778 static uint32_t
lpfc_cmpl_plogi_npr_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2779 lpfc_cmpl_plogi_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2780 void *arg, uint32_t evt)
2781 {
2782 struct lpfc_hba *phba = vport->phba;
2783 struct lpfc_iocbq *cmdiocb, *rspiocb;
2784 u32 ulp_status;
2785
2786 cmdiocb = (struct lpfc_iocbq *) arg;
2787 rspiocb = cmdiocb->rsp_iocb;
2788
2789 ulp_status = get_job_ulpstatus(phba, rspiocb);
2790
2791 if (ulp_status)
2792 return NLP_STE_FREED_NODE;
2793
2794 return ndlp->nlp_state;
2795 }
2796
2797 static uint32_t
lpfc_cmpl_prli_npr_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2798 lpfc_cmpl_prli_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2799 void *arg, uint32_t evt)
2800 {
2801 struct lpfc_hba *phba = vport->phba;
2802 struct lpfc_iocbq *cmdiocb, *rspiocb;
2803 u32 ulp_status;
2804
2805 cmdiocb = (struct lpfc_iocbq *) arg;
2806 rspiocb = cmdiocb->rsp_iocb;
2807
2808 ulp_status = get_job_ulpstatus(phba, rspiocb);
2809
2810 if (ulp_status && (ndlp->nlp_flag & NLP_NODEV_REMOVE)) {
2811 lpfc_drop_node(vport, ndlp);
2812 return NLP_STE_FREED_NODE;
2813 }
2814 return ndlp->nlp_state;
2815 }
2816
2817 static uint32_t
lpfc_cmpl_logo_npr_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2818 lpfc_cmpl_logo_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2819 void *arg, uint32_t evt)
2820 {
2821 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2822
2823 /* For the fabric port just clear the fc flags. */
2824 if (ndlp->nlp_DID == Fabric_DID) {
2825 spin_lock_irq(shost->host_lock);
2826 vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP);
2827 spin_unlock_irq(shost->host_lock);
2828 }
2829 lpfc_unreg_rpi(vport, ndlp);
2830 return ndlp->nlp_state;
2831 }
2832
2833 static uint32_t
lpfc_cmpl_adisc_npr_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2834 lpfc_cmpl_adisc_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2835 void *arg, uint32_t evt)
2836 {
2837 struct lpfc_hba *phba = vport->phba;
2838 struct lpfc_iocbq *cmdiocb, *rspiocb;
2839 u32 ulp_status;
2840
2841 cmdiocb = (struct lpfc_iocbq *) arg;
2842 rspiocb = cmdiocb->rsp_iocb;
2843
2844 ulp_status = get_job_ulpstatus(phba, rspiocb);
2845
2846 if (ulp_status && (ndlp->nlp_flag & NLP_NODEV_REMOVE)) {
2847 lpfc_drop_node(vport, ndlp);
2848 return NLP_STE_FREED_NODE;
2849 }
2850 return ndlp->nlp_state;
2851 }
2852
2853 static uint32_t
lpfc_cmpl_reglogin_npr_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2854 lpfc_cmpl_reglogin_npr_node(struct lpfc_vport *vport,
2855 struct lpfc_nodelist *ndlp,
2856 void *arg, uint32_t evt)
2857 {
2858 LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg;
2859 MAILBOX_t *mb = &pmb->u.mb;
2860
2861 if (!mb->mbxStatus) {
2862 /* SLI4 ports have preallocated logical rpis. */
2863 if (vport->phba->sli_rev < LPFC_SLI_REV4)
2864 ndlp->nlp_rpi = mb->un.varWords[0];
2865 ndlp->nlp_flag |= NLP_RPI_REGISTERED;
2866 if (ndlp->nlp_flag & NLP_LOGO_ACC) {
2867 lpfc_unreg_rpi(vport, ndlp);
2868 }
2869 } else {
2870 if (ndlp->nlp_flag & NLP_NODEV_REMOVE) {
2871 lpfc_drop_node(vport, ndlp);
2872 return NLP_STE_FREED_NODE;
2873 }
2874 }
2875 return ndlp->nlp_state;
2876 }
2877
2878 static uint32_t
lpfc_device_rm_npr_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2879 lpfc_device_rm_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2880 void *arg, uint32_t evt)
2881 {
2882 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
2883 spin_lock_irq(&ndlp->lock);
2884 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
2885 spin_unlock_irq(&ndlp->lock);
2886 return ndlp->nlp_state;
2887 }
2888 lpfc_drop_node(vport, ndlp);
2889 return NLP_STE_FREED_NODE;
2890 }
2891
2892 static uint32_t
lpfc_device_recov_npr_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2893 lpfc_device_recov_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2894 void *arg, uint32_t evt)
2895 {
2896 /* Don't do anything that will mess up processing of the
2897 * previous RSCN.
2898 */
2899 if (vport->fc_flag & FC_RSCN_DEFERRED)
2900 return ndlp->nlp_state;
2901
2902 lpfc_cancel_retry_delay_tmo(vport, ndlp);
2903 spin_lock_irq(&ndlp->lock);
2904 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
2905 ndlp->nlp_fc4_type &= ~(NLP_FC4_FCP | NLP_FC4_NVME);
2906 spin_unlock_irq(&ndlp->lock);
2907 return ndlp->nlp_state;
2908 }
2909
2910
2911 /* This next section defines the NPort Discovery State Machine */
2912
2913 /* There are 4 different double linked lists nodelist entries can reside on.
2914 * The plogi list and adisc list are used when Link Up discovery or RSCN
2915 * processing is needed. Each list holds the nodes that we will send PLOGI
2916 * or ADISC on. These lists will keep track of what nodes will be effected
2917 * by an RSCN, or a Link Up (Typically, all nodes are effected on Link Up).
2918 * The unmapped_list will contain all nodes that we have successfully logged
2919 * into at the Fibre Channel level. The mapped_list will contain all nodes
2920 * that are mapped FCP targets.
2921 */
2922 /*
2923 * The bind list is a list of undiscovered (potentially non-existent) nodes
2924 * that we have saved binding information on. This information is used when
2925 * nodes transition from the unmapped to the mapped list.
2926 */
2927 /* For UNUSED_NODE state, the node has just been allocated .
2928 * For PLOGI_ISSUE and REG_LOGIN_ISSUE, the node is on
2929 * the PLOGI list. For REG_LOGIN_COMPL, the node is taken off the PLOGI list
2930 * and put on the unmapped list. For ADISC processing, the node is taken off
2931 * the ADISC list and placed on either the mapped or unmapped list (depending
2932 * on its previous state). Once on the unmapped list, a PRLI is issued and the
2933 * state changed to PRLI_ISSUE. When the PRLI completion occurs, the state is
2934 * changed to UNMAPPED_NODE. If the completion indicates a mapped
2935 * node, the node is taken off the unmapped list. The binding list is checked
2936 * for a valid binding, or a binding is automatically assigned. If binding
2937 * assignment is unsuccessful, the node is left on the unmapped list. If
2938 * binding assignment is successful, the associated binding list entry (if
2939 * any) is removed, and the node is placed on the mapped list.
2940 */
2941 /*
2942 * For a Link Down, all nodes on the ADISC, PLOGI, unmapped or mapped
2943 * lists will receive a DEVICE_RECOVERY event. If the linkdown or devloss timers
2944 * expire, all effected nodes will receive a DEVICE_RM event.
2945 */
2946 /*
2947 * For a Link Up or RSCN, all nodes will move from the mapped / unmapped lists
2948 * to either the ADISC or PLOGI list. After a Nameserver query or ALPA loopmap
2949 * check, additional nodes may be added or removed (via DEVICE_RM) to / from
2950 * the PLOGI or ADISC lists. Once the PLOGI and ADISC lists are populated,
2951 * we will first process the ADISC list. 32 entries are processed initially and
2952 * ADISC is initited for each one. Completions / Events for each node are
2953 * funnelled thru the state machine. As each node finishes ADISC processing, it
2954 * starts ADISC for any nodes waiting for ADISC processing. If no nodes are
2955 * waiting, and the ADISC list count is identically 0, then we are done. For
2956 * Link Up discovery, since all nodes on the PLOGI list are UNREG_LOGIN'ed, we
2957 * can issue a CLEAR_LA and reenable Link Events. Next we will process the PLOGI
2958 * list. 32 entries are processed initially and PLOGI is initited for each one.
2959 * Completions / Events for each node are funnelled thru the state machine. As
2960 * each node finishes PLOGI processing, it starts PLOGI for any nodes waiting
2961 * for PLOGI processing. If no nodes are waiting, and the PLOGI list count is
2962 * indentically 0, then we are done. We have now completed discovery / RSCN
2963 * handling. Upon completion, ALL nodes should be on either the mapped or
2964 * unmapped lists.
2965 */
2966
2967 static uint32_t (*lpfc_disc_action[NLP_STE_MAX_STATE * NLP_EVT_MAX_EVENT])
2968 (struct lpfc_vport *, struct lpfc_nodelist *, void *, uint32_t) = {
2969 /* Action routine Event Current State */
2970 lpfc_rcv_plogi_unused_node, /* RCV_PLOGI UNUSED_NODE */
2971 lpfc_rcv_els_unused_node, /* RCV_PRLI */
2972 lpfc_rcv_logo_unused_node, /* RCV_LOGO */
2973 lpfc_rcv_els_unused_node, /* RCV_ADISC */
2974 lpfc_rcv_els_unused_node, /* RCV_PDISC */
2975 lpfc_rcv_els_unused_node, /* RCV_PRLO */
2976 lpfc_disc_illegal, /* CMPL_PLOGI */
2977 lpfc_disc_illegal, /* CMPL_PRLI */
2978 lpfc_cmpl_logo_unused_node, /* CMPL_LOGO */
2979 lpfc_disc_illegal, /* CMPL_ADISC */
2980 lpfc_disc_illegal, /* CMPL_REG_LOGIN */
2981 lpfc_device_rm_unused_node, /* DEVICE_RM */
2982 lpfc_device_recov_unused_node, /* DEVICE_RECOVERY */
2983
2984 lpfc_rcv_plogi_plogi_issue, /* RCV_PLOGI PLOGI_ISSUE */
2985 lpfc_rcv_prli_plogi_issue, /* RCV_PRLI */
2986 lpfc_rcv_logo_plogi_issue, /* RCV_LOGO */
2987 lpfc_rcv_els_plogi_issue, /* RCV_ADISC */
2988 lpfc_rcv_els_plogi_issue, /* RCV_PDISC */
2989 lpfc_rcv_els_plogi_issue, /* RCV_PRLO */
2990 lpfc_cmpl_plogi_plogi_issue, /* CMPL_PLOGI */
2991 lpfc_disc_illegal, /* CMPL_PRLI */
2992 lpfc_cmpl_logo_plogi_issue, /* CMPL_LOGO */
2993 lpfc_disc_illegal, /* CMPL_ADISC */
2994 lpfc_cmpl_reglogin_plogi_issue,/* CMPL_REG_LOGIN */
2995 lpfc_device_rm_plogi_issue, /* DEVICE_RM */
2996 lpfc_device_recov_plogi_issue, /* DEVICE_RECOVERY */
2997
2998 lpfc_rcv_plogi_adisc_issue, /* RCV_PLOGI ADISC_ISSUE */
2999 lpfc_rcv_prli_adisc_issue, /* RCV_PRLI */
3000 lpfc_rcv_logo_adisc_issue, /* RCV_LOGO */
3001 lpfc_rcv_padisc_adisc_issue, /* RCV_ADISC */
3002 lpfc_rcv_padisc_adisc_issue, /* RCV_PDISC */
3003 lpfc_rcv_prlo_adisc_issue, /* RCV_PRLO */
3004 lpfc_disc_illegal, /* CMPL_PLOGI */
3005 lpfc_disc_illegal, /* CMPL_PRLI */
3006 lpfc_disc_illegal, /* CMPL_LOGO */
3007 lpfc_cmpl_adisc_adisc_issue, /* CMPL_ADISC */
3008 lpfc_disc_illegal, /* CMPL_REG_LOGIN */
3009 lpfc_device_rm_adisc_issue, /* DEVICE_RM */
3010 lpfc_device_recov_adisc_issue, /* DEVICE_RECOVERY */
3011
3012 lpfc_rcv_plogi_reglogin_issue, /* RCV_PLOGI REG_LOGIN_ISSUE */
3013 lpfc_rcv_prli_reglogin_issue, /* RCV_PLOGI */
3014 lpfc_rcv_logo_reglogin_issue, /* RCV_LOGO */
3015 lpfc_rcv_padisc_reglogin_issue, /* RCV_ADISC */
3016 lpfc_rcv_padisc_reglogin_issue, /* RCV_PDISC */
3017 lpfc_rcv_prlo_reglogin_issue, /* RCV_PRLO */
3018 lpfc_cmpl_plogi_illegal, /* CMPL_PLOGI */
3019 lpfc_disc_illegal, /* CMPL_PRLI */
3020 lpfc_disc_illegal, /* CMPL_LOGO */
3021 lpfc_disc_illegal, /* CMPL_ADISC */
3022 lpfc_cmpl_reglogin_reglogin_issue,/* CMPL_REG_LOGIN */
3023 lpfc_device_rm_reglogin_issue, /* DEVICE_RM */
3024 lpfc_device_recov_reglogin_issue,/* DEVICE_RECOVERY */
3025
3026 lpfc_rcv_plogi_prli_issue, /* RCV_PLOGI PRLI_ISSUE */
3027 lpfc_rcv_prli_prli_issue, /* RCV_PRLI */
3028 lpfc_rcv_logo_prli_issue, /* RCV_LOGO */
3029 lpfc_rcv_padisc_prli_issue, /* RCV_ADISC */
3030 lpfc_rcv_padisc_prli_issue, /* RCV_PDISC */
3031 lpfc_rcv_prlo_prli_issue, /* RCV_PRLO */
3032 lpfc_cmpl_plogi_illegal, /* CMPL_PLOGI */
3033 lpfc_cmpl_prli_prli_issue, /* CMPL_PRLI */
3034 lpfc_disc_illegal, /* CMPL_LOGO */
3035 lpfc_disc_illegal, /* CMPL_ADISC */
3036 lpfc_disc_illegal, /* CMPL_REG_LOGIN */
3037 lpfc_device_rm_prli_issue, /* DEVICE_RM */
3038 lpfc_device_recov_prli_issue, /* DEVICE_RECOVERY */
3039
3040 lpfc_rcv_plogi_logo_issue, /* RCV_PLOGI LOGO_ISSUE */
3041 lpfc_rcv_prli_logo_issue, /* RCV_PRLI */
3042 lpfc_rcv_logo_logo_issue, /* RCV_LOGO */
3043 lpfc_rcv_padisc_logo_issue, /* RCV_ADISC */
3044 lpfc_rcv_padisc_logo_issue, /* RCV_PDISC */
3045 lpfc_rcv_prlo_logo_issue, /* RCV_PRLO */
3046 lpfc_cmpl_plogi_illegal, /* CMPL_PLOGI */
3047 lpfc_disc_illegal, /* CMPL_PRLI */
3048 lpfc_cmpl_logo_logo_issue, /* CMPL_LOGO */
3049 lpfc_disc_illegal, /* CMPL_ADISC */
3050 lpfc_disc_illegal, /* CMPL_REG_LOGIN */
3051 lpfc_device_rm_logo_issue, /* DEVICE_RM */
3052 lpfc_device_recov_logo_issue, /* DEVICE_RECOVERY */
3053
3054 lpfc_rcv_plogi_unmap_node, /* RCV_PLOGI UNMAPPED_NODE */
3055 lpfc_rcv_prli_unmap_node, /* RCV_PRLI */
3056 lpfc_rcv_logo_unmap_node, /* RCV_LOGO */
3057 lpfc_rcv_padisc_unmap_node, /* RCV_ADISC */
3058 lpfc_rcv_padisc_unmap_node, /* RCV_PDISC */
3059 lpfc_rcv_prlo_unmap_node, /* RCV_PRLO */
3060 lpfc_disc_illegal, /* CMPL_PLOGI */
3061 lpfc_disc_illegal, /* CMPL_PRLI */
3062 lpfc_disc_illegal, /* CMPL_LOGO */
3063 lpfc_disc_illegal, /* CMPL_ADISC */
3064 lpfc_disc_illegal, /* CMPL_REG_LOGIN */
3065 lpfc_device_rm_unmap_node, /* DEVICE_RM */
3066 lpfc_device_recov_unmap_node, /* DEVICE_RECOVERY */
3067
3068 lpfc_rcv_plogi_mapped_node, /* RCV_PLOGI MAPPED_NODE */
3069 lpfc_rcv_prli_mapped_node, /* RCV_PRLI */
3070 lpfc_rcv_logo_mapped_node, /* RCV_LOGO */
3071 lpfc_rcv_padisc_mapped_node, /* RCV_ADISC */
3072 lpfc_rcv_padisc_mapped_node, /* RCV_PDISC */
3073 lpfc_rcv_prlo_mapped_node, /* RCV_PRLO */
3074 lpfc_disc_illegal, /* CMPL_PLOGI */
3075 lpfc_disc_illegal, /* CMPL_PRLI */
3076 lpfc_disc_illegal, /* CMPL_LOGO */
3077 lpfc_disc_illegal, /* CMPL_ADISC */
3078 lpfc_disc_illegal, /* CMPL_REG_LOGIN */
3079 lpfc_disc_illegal, /* DEVICE_RM */
3080 lpfc_device_recov_mapped_node, /* DEVICE_RECOVERY */
3081
3082 lpfc_rcv_plogi_npr_node, /* RCV_PLOGI NPR_NODE */
3083 lpfc_rcv_prli_npr_node, /* RCV_PRLI */
3084 lpfc_rcv_logo_npr_node, /* RCV_LOGO */
3085 lpfc_rcv_padisc_npr_node, /* RCV_ADISC */
3086 lpfc_rcv_padisc_npr_node, /* RCV_PDISC */
3087 lpfc_rcv_prlo_npr_node, /* RCV_PRLO */
3088 lpfc_cmpl_plogi_npr_node, /* CMPL_PLOGI */
3089 lpfc_cmpl_prli_npr_node, /* CMPL_PRLI */
3090 lpfc_cmpl_logo_npr_node, /* CMPL_LOGO */
3091 lpfc_cmpl_adisc_npr_node, /* CMPL_ADISC */
3092 lpfc_cmpl_reglogin_npr_node, /* CMPL_REG_LOGIN */
3093 lpfc_device_rm_npr_node, /* DEVICE_RM */
3094 lpfc_device_recov_npr_node, /* DEVICE_RECOVERY */
3095 };
3096
3097 int
lpfc_disc_state_machine(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)3098 lpfc_disc_state_machine(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
3099 void *arg, uint32_t evt)
3100 {
3101 uint32_t cur_state, rc;
3102 uint32_t(*func) (struct lpfc_vport *, struct lpfc_nodelist *, void *,
3103 uint32_t);
3104 uint32_t got_ndlp = 0;
3105 uint32_t data1;
3106
3107 if (lpfc_nlp_get(ndlp))
3108 got_ndlp = 1;
3109
3110 cur_state = ndlp->nlp_state;
3111
3112 data1 = (((uint32_t)ndlp->nlp_fc4_type << 16) |
3113 ((uint32_t)ndlp->nlp_type));
3114 /* DSM in event <evt> on NPort <nlp_DID> in state <cur_state> */
3115 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
3116 "0211 DSM in event x%x on NPort x%x in "
3117 "state %d rpi x%x Data: x%x x%x\n",
3118 evt, ndlp->nlp_DID, cur_state, ndlp->nlp_rpi,
3119 ndlp->nlp_flag, data1);
3120
3121 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_DSM,
3122 "DSM in: evt:%d ste:%d did:x%x",
3123 evt, cur_state, ndlp->nlp_DID);
3124
3125 func = lpfc_disc_action[(cur_state * NLP_EVT_MAX_EVENT) + evt];
3126 rc = (func) (vport, ndlp, arg, evt);
3127
3128 /* DSM out state <rc> on NPort <nlp_DID> */
3129 if (got_ndlp) {
3130 data1 = (((uint32_t)ndlp->nlp_fc4_type << 16) |
3131 ((uint32_t)ndlp->nlp_type));
3132 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
3133 "0212 DSM out state %d on NPort x%x "
3134 "rpi x%x Data: x%x x%x\n",
3135 rc, ndlp->nlp_DID, ndlp->nlp_rpi, ndlp->nlp_flag,
3136 data1);
3137
3138 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_DSM,
3139 "DSM out: ste:%d did:x%x flg:x%x",
3140 rc, ndlp->nlp_DID, ndlp->nlp_flag);
3141 /* Decrement the ndlp reference count held for this function */
3142 lpfc_nlp_put(ndlp);
3143 } else {
3144 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
3145 "0213 DSM out state %d on NPort free\n", rc);
3146
3147 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_DSM,
3148 "DSM out: ste:%d did:x%x flg:x%x",
3149 rc, 0, 0);
3150 }
3151
3152 return rc;
3153 }
3154