1 /*******************************************************************
2 * This file is part of the Emulex Linux Device Driver for *
3 * Fibre Channel Host Bus Adapters. *
4 * Copyright (C) 2017-2019 Broadcom. All Rights Reserved. The term *
5 * “Broadcom” refers to Broadcom Inc. and/or its subsidiaries. *
6 * Copyright (C) 2004-2016 Emulex. All rights reserved. *
7 * EMULEX and SLI are trademarks of Emulex. *
8 * www.broadcom.com *
9 * Portions Copyright (C) 2004-2005 Christoph Hellwig *
10 * *
11 * This program is free software; you can redistribute it and/or *
12 * modify it under the terms of version 2 of the GNU General *
13 * Public License as published by the Free Software Foundation. *
14 * This program is distributed in the hope that it will be useful. *
15 * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND *
16 * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, *
17 * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE *
18 * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD *
19 * TO BE LEGALLY INVALID. See the GNU General Public License for *
20 * more details, a copy of which can be found in the file COPYING *
21 * included with this package. *
22 *******************************************************************/
23
24 #include <linux/blkdev.h>
25 #include <linux/pci.h>
26 #include <linux/slab.h>
27 #include <linux/interrupt.h>
28
29 #include <scsi/scsi.h>
30 #include <scsi/scsi_device.h>
31 #include <scsi/scsi_host.h>
32 #include <scsi/scsi_transport_fc.h>
33 #include <scsi/fc/fc_fs.h>
34
35 #include <linux/nvme-fc-driver.h>
36
37 #include "lpfc_hw4.h"
38 #include "lpfc_hw.h"
39 #include "lpfc_sli.h"
40 #include "lpfc_sli4.h"
41 #include "lpfc_nl.h"
42 #include "lpfc_disc.h"
43 #include "lpfc.h"
44 #include "lpfc_scsi.h"
45 #include "lpfc_nvme.h"
46 #include "lpfc_logmsg.h"
47 #include "lpfc_crtn.h"
48 #include "lpfc_vport.h"
49 #include "lpfc_debugfs.h"
50
51
52 /* Called to verify a rcv'ed ADISC was intended for us. */
53 static int
lpfc_check_adisc(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,struct lpfc_name * nn,struct lpfc_name * pn)54 lpfc_check_adisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
55 struct lpfc_name *nn, struct lpfc_name *pn)
56 {
57 /* First, we MUST have a RPI registered */
58 if (!(ndlp->nlp_flag & NLP_RPI_REGISTERED))
59 return 0;
60
61 /* Compare the ADISC rsp WWNN / WWPN matches our internal node
62 * table entry for that node.
63 */
64 if (memcmp(nn, &ndlp->nlp_nodename, sizeof (struct lpfc_name)))
65 return 0;
66
67 if (memcmp(pn, &ndlp->nlp_portname, sizeof (struct lpfc_name)))
68 return 0;
69
70 /* we match, return success */
71 return 1;
72 }
73
74 int
lpfc_check_sparm(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,struct serv_parm * sp,uint32_t class,int flogi)75 lpfc_check_sparm(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
76 struct serv_parm *sp, uint32_t class, int flogi)
77 {
78 volatile struct serv_parm *hsp = &vport->fc_sparam;
79 uint16_t hsp_value, ssp_value = 0;
80
81 /*
82 * The receive data field size and buffer-to-buffer receive data field
83 * size entries are 16 bits but are represented as two 8-bit fields in
84 * the driver data structure to account for rsvd bits and other control
85 * bits. Reconstruct and compare the fields as a 16-bit values before
86 * correcting the byte values.
87 */
88 if (sp->cls1.classValid) {
89 if (!flogi) {
90 hsp_value = ((hsp->cls1.rcvDataSizeMsb << 8) |
91 hsp->cls1.rcvDataSizeLsb);
92 ssp_value = ((sp->cls1.rcvDataSizeMsb << 8) |
93 sp->cls1.rcvDataSizeLsb);
94 if (!ssp_value)
95 goto bad_service_param;
96 if (ssp_value > hsp_value) {
97 sp->cls1.rcvDataSizeLsb =
98 hsp->cls1.rcvDataSizeLsb;
99 sp->cls1.rcvDataSizeMsb =
100 hsp->cls1.rcvDataSizeMsb;
101 }
102 }
103 } else if (class == CLASS1)
104 goto bad_service_param;
105 if (sp->cls2.classValid) {
106 if (!flogi) {
107 hsp_value = ((hsp->cls2.rcvDataSizeMsb << 8) |
108 hsp->cls2.rcvDataSizeLsb);
109 ssp_value = ((sp->cls2.rcvDataSizeMsb << 8) |
110 sp->cls2.rcvDataSizeLsb);
111 if (!ssp_value)
112 goto bad_service_param;
113 if (ssp_value > hsp_value) {
114 sp->cls2.rcvDataSizeLsb =
115 hsp->cls2.rcvDataSizeLsb;
116 sp->cls2.rcvDataSizeMsb =
117 hsp->cls2.rcvDataSizeMsb;
118 }
119 }
120 } else if (class == CLASS2)
121 goto bad_service_param;
122 if (sp->cls3.classValid) {
123 if (!flogi) {
124 hsp_value = ((hsp->cls3.rcvDataSizeMsb << 8) |
125 hsp->cls3.rcvDataSizeLsb);
126 ssp_value = ((sp->cls3.rcvDataSizeMsb << 8) |
127 sp->cls3.rcvDataSizeLsb);
128 if (!ssp_value)
129 goto bad_service_param;
130 if (ssp_value > hsp_value) {
131 sp->cls3.rcvDataSizeLsb =
132 hsp->cls3.rcvDataSizeLsb;
133 sp->cls3.rcvDataSizeMsb =
134 hsp->cls3.rcvDataSizeMsb;
135 }
136 }
137 } else if (class == CLASS3)
138 goto bad_service_param;
139
140 /*
141 * Preserve the upper four bits of the MSB from the PLOGI response.
142 * These bits contain the Buffer-to-Buffer State Change Number
143 * from the target and need to be passed to the FW.
144 */
145 hsp_value = (hsp->cmn.bbRcvSizeMsb << 8) | hsp->cmn.bbRcvSizeLsb;
146 ssp_value = (sp->cmn.bbRcvSizeMsb << 8) | sp->cmn.bbRcvSizeLsb;
147 if (ssp_value > hsp_value) {
148 sp->cmn.bbRcvSizeLsb = hsp->cmn.bbRcvSizeLsb;
149 sp->cmn.bbRcvSizeMsb = (sp->cmn.bbRcvSizeMsb & 0xF0) |
150 (hsp->cmn.bbRcvSizeMsb & 0x0F);
151 }
152
153 memcpy(&ndlp->nlp_nodename, &sp->nodeName, sizeof (struct lpfc_name));
154 memcpy(&ndlp->nlp_portname, &sp->portName, sizeof (struct lpfc_name));
155 return 1;
156 bad_service_param:
157 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
158 "0207 Device %x "
159 "(%02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x) sent "
160 "invalid service parameters. Ignoring device.\n",
161 ndlp->nlp_DID,
162 sp->nodeName.u.wwn[0], sp->nodeName.u.wwn[1],
163 sp->nodeName.u.wwn[2], sp->nodeName.u.wwn[3],
164 sp->nodeName.u.wwn[4], sp->nodeName.u.wwn[5],
165 sp->nodeName.u.wwn[6], sp->nodeName.u.wwn[7]);
166 return 0;
167 }
168
169 static void *
lpfc_check_elscmpl_iocb(struct lpfc_hba * phba,struct lpfc_iocbq * cmdiocb,struct lpfc_iocbq * rspiocb)170 lpfc_check_elscmpl_iocb(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
171 struct lpfc_iocbq *rspiocb)
172 {
173 struct lpfc_dmabuf *pcmd, *prsp;
174 uint32_t *lp;
175 void *ptr = NULL;
176 IOCB_t *irsp;
177
178 irsp = &rspiocb->iocb;
179 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
180
181 /* For lpfc_els_abort, context2 could be zero'ed to delay
182 * freeing associated memory till after ABTS completes.
183 */
184 if (pcmd) {
185 prsp = list_get_first(&pcmd->list, struct lpfc_dmabuf,
186 list);
187 if (prsp) {
188 lp = (uint32_t *) prsp->virt;
189 ptr = (void *)((uint8_t *)lp + sizeof(uint32_t));
190 }
191 } else {
192 /* Force ulpStatus error since we are returning NULL ptr */
193 if (!(irsp->ulpStatus)) {
194 irsp->ulpStatus = IOSTAT_LOCAL_REJECT;
195 irsp->un.ulpWord[4] = IOERR_SLI_ABORTED;
196 }
197 ptr = NULL;
198 }
199 return ptr;
200 }
201
202
203
204 /*
205 * Free resources / clean up outstanding I/Os
206 * associated with a LPFC_NODELIST entry. This
207 * routine effectively results in a "software abort".
208 */
209 void
lpfc_els_abort(struct lpfc_hba * phba,struct lpfc_nodelist * ndlp)210 lpfc_els_abort(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
211 {
212 LIST_HEAD(abort_list);
213 struct lpfc_sli_ring *pring;
214 struct lpfc_iocbq *iocb, *next_iocb;
215
216 pring = lpfc_phba_elsring(phba);
217
218 /* In case of error recovery path, we might have a NULL pring here */
219 if (unlikely(!pring))
220 return;
221
222 /* Abort outstanding I/O on NPort <nlp_DID> */
223 lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_DISCOVERY,
224 "2819 Abort outstanding I/O on NPort x%x "
225 "Data: x%x x%x x%x\n",
226 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
227 ndlp->nlp_rpi);
228 /* Clean up all fabric IOs first.*/
229 lpfc_fabric_abort_nport(ndlp);
230
231 /*
232 * Lock the ELS ring txcmplq for SLI3/SLI4 and build a local list
233 * of all ELS IOs that need an ABTS. The IOs need to stay on the
234 * txcmplq so that the abort operation completes them successfully.
235 */
236 spin_lock_irq(&phba->hbalock);
237 if (phba->sli_rev == LPFC_SLI_REV4)
238 spin_lock(&pring->ring_lock);
239 list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq, list) {
240 /* Add to abort_list on on NDLP match. */
241 if (lpfc_check_sli_ndlp(phba, pring, iocb, ndlp))
242 list_add_tail(&iocb->dlist, &abort_list);
243 }
244 if (phba->sli_rev == LPFC_SLI_REV4)
245 spin_unlock(&pring->ring_lock);
246 spin_unlock_irq(&phba->hbalock);
247
248 /* Abort the targeted IOs and remove them from the abort list. */
249 list_for_each_entry_safe(iocb, next_iocb, &abort_list, dlist) {
250 spin_lock_irq(&phba->hbalock);
251 list_del_init(&iocb->dlist);
252 lpfc_sli_issue_abort_iotag(phba, pring, iocb);
253 spin_unlock_irq(&phba->hbalock);
254 }
255
256 INIT_LIST_HEAD(&abort_list);
257
258 /* Now process the txq */
259 spin_lock_irq(&phba->hbalock);
260 if (phba->sli_rev == LPFC_SLI_REV4)
261 spin_lock(&pring->ring_lock);
262
263 list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) {
264 /* Check to see if iocb matches the nport we are looking for */
265 if (lpfc_check_sli_ndlp(phba, pring, iocb, ndlp)) {
266 list_del_init(&iocb->list);
267 list_add_tail(&iocb->list, &abort_list);
268 }
269 }
270
271 if (phba->sli_rev == LPFC_SLI_REV4)
272 spin_unlock(&pring->ring_lock);
273 spin_unlock_irq(&phba->hbalock);
274
275 /* Cancel all the IOCBs from the completions list */
276 lpfc_sli_cancel_iocbs(phba, &abort_list,
277 IOSTAT_LOCAL_REJECT, IOERR_SLI_ABORTED);
278
279 lpfc_cancel_retry_delay_tmo(phba->pport, ndlp);
280 }
281
282 static int
lpfc_rcv_plogi(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,struct lpfc_iocbq * cmdiocb)283 lpfc_rcv_plogi(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
284 struct lpfc_iocbq *cmdiocb)
285 {
286 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
287 struct lpfc_hba *phba = vport->phba;
288 struct lpfc_dmabuf *pcmd;
289 uint64_t nlp_portwwn = 0;
290 uint32_t *lp;
291 IOCB_t *icmd;
292 struct serv_parm *sp;
293 uint32_t ed_tov;
294 LPFC_MBOXQ_t *mbox;
295 struct ls_rjt stat;
296 uint32_t vid, flag;
297 int rc;
298
299 memset(&stat, 0, sizeof (struct ls_rjt));
300 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
301 lp = (uint32_t *) pcmd->virt;
302 sp = (struct serv_parm *) ((uint8_t *) lp + sizeof (uint32_t));
303 if (wwn_to_u64(sp->portName.u.wwn) == 0) {
304 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
305 "0140 PLOGI Reject: invalid nname\n");
306 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
307 stat.un.b.lsRjtRsnCodeExp = LSEXP_INVALID_PNAME;
308 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
309 NULL);
310 return 0;
311 }
312 if (wwn_to_u64(sp->nodeName.u.wwn) == 0) {
313 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
314 "0141 PLOGI Reject: invalid pname\n");
315 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
316 stat.un.b.lsRjtRsnCodeExp = LSEXP_INVALID_NNAME;
317 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
318 NULL);
319 return 0;
320 }
321
322 nlp_portwwn = wwn_to_u64(ndlp->nlp_portname.u.wwn);
323 if ((lpfc_check_sparm(vport, ndlp, sp, CLASS3, 0) == 0)) {
324 /* Reject this request because invalid parameters */
325 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
326 stat.un.b.lsRjtRsnCodeExp = LSEXP_SPARM_OPTIONS;
327 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
328 NULL);
329 return 0;
330 }
331 icmd = &cmdiocb->iocb;
332
333 /* PLOGI chkparm OK */
334 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
335 "0114 PLOGI chkparm OK Data: x%x x%x x%x "
336 "x%x x%x x%x\n",
337 ndlp->nlp_DID, ndlp->nlp_state, ndlp->nlp_flag,
338 ndlp->nlp_rpi, vport->port_state,
339 vport->fc_flag);
340
341 if (vport->cfg_fcp_class == 2 && sp->cls2.classValid)
342 ndlp->nlp_fcp_info |= CLASS2;
343 else
344 ndlp->nlp_fcp_info |= CLASS3;
345
346 ndlp->nlp_class_sup = 0;
347 if (sp->cls1.classValid)
348 ndlp->nlp_class_sup |= FC_COS_CLASS1;
349 if (sp->cls2.classValid)
350 ndlp->nlp_class_sup |= FC_COS_CLASS2;
351 if (sp->cls3.classValid)
352 ndlp->nlp_class_sup |= FC_COS_CLASS3;
353 if (sp->cls4.classValid)
354 ndlp->nlp_class_sup |= FC_COS_CLASS4;
355 ndlp->nlp_maxframe =
356 ((sp->cmn.bbRcvSizeMsb & 0x0F) << 8) | sp->cmn.bbRcvSizeLsb;
357
358 /* if already logged in, do implicit logout */
359 switch (ndlp->nlp_state) {
360 case NLP_STE_NPR_NODE:
361 if (!(ndlp->nlp_flag & NLP_NPR_ADISC))
362 break;
363 /* fall through */
364 case NLP_STE_REG_LOGIN_ISSUE:
365 case NLP_STE_PRLI_ISSUE:
366 case NLP_STE_UNMAPPED_NODE:
367 case NLP_STE_MAPPED_NODE:
368 /* For initiators, lpfc_plogi_confirm_nport skips fabric did.
369 * For target mode, execute implicit logo.
370 * Fabric nodes go into NPR.
371 */
372 if (!(ndlp->nlp_type & NLP_FABRIC) &&
373 !(phba->nvmet_support)) {
374 lpfc_els_rsp_acc(vport, ELS_CMD_PLOGI, cmdiocb,
375 ndlp, NULL);
376 return 1;
377 }
378 if (nlp_portwwn != 0 &&
379 nlp_portwwn != wwn_to_u64(sp->portName.u.wwn))
380 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
381 "0143 PLOGI recv'd from DID: x%x "
382 "WWPN changed: old %llx new %llx\n",
383 ndlp->nlp_DID,
384 (unsigned long long)nlp_portwwn,
385 (unsigned long long)
386 wwn_to_u64(sp->portName.u.wwn));
387
388 ndlp->nlp_prev_state = ndlp->nlp_state;
389 /* rport needs to be unregistered first */
390 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
391 break;
392 }
393
394 ndlp->nlp_type &= ~(NLP_FCP_TARGET | NLP_FCP_INITIATOR);
395 ndlp->nlp_type &= ~(NLP_NVME_TARGET | NLP_NVME_INITIATOR);
396 ndlp->nlp_fcp_info &= ~NLP_FCP_2_DEVICE;
397 ndlp->nlp_flag &= ~NLP_FIRSTBURST;
398
399 /* Check for Nport to NPort pt2pt protocol */
400 if ((vport->fc_flag & FC_PT2PT) &&
401 !(vport->fc_flag & FC_PT2PT_PLOGI)) {
402 /* rcv'ed PLOGI decides what our NPortId will be */
403 vport->fc_myDID = icmd->un.rcvels.parmRo;
404
405 ed_tov = be32_to_cpu(sp->cmn.e_d_tov);
406 if (sp->cmn.edtovResolution) {
407 /* E_D_TOV ticks are in nanoseconds */
408 ed_tov = (phba->fc_edtov + 999999) / 1000000;
409 }
410
411 /*
412 * For pt-to-pt, use the larger EDTOV
413 * RATOV = 2 * EDTOV
414 */
415 if (ed_tov > phba->fc_edtov)
416 phba->fc_edtov = ed_tov;
417 phba->fc_ratov = (2 * phba->fc_edtov) / 1000;
418
419 memcpy(&phba->fc_fabparam, sp, sizeof(struct serv_parm));
420
421 /* Issue config_link / reg_vfi to account for updated TOV's */
422
423 if (phba->sli_rev == LPFC_SLI_REV4)
424 lpfc_issue_reg_vfi(vport);
425 else {
426 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
427 if (mbox == NULL)
428 goto out;
429 lpfc_config_link(phba, mbox);
430 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
431 mbox->vport = vport;
432 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
433 if (rc == MBX_NOT_FINISHED) {
434 mempool_free(mbox, phba->mbox_mem_pool);
435 goto out;
436 }
437 }
438
439 lpfc_can_disctmo(vport);
440 }
441
442 ndlp->nlp_flag &= ~NLP_SUPPRESS_RSP;
443 if ((phba->sli.sli_flag & LPFC_SLI_SUPPRESS_RSP) &&
444 sp->cmn.valid_vendor_ver_level) {
445 vid = be32_to_cpu(sp->un.vv.vid);
446 flag = be32_to_cpu(sp->un.vv.flags);
447 if ((vid == LPFC_VV_EMLX_ID) && (flag & LPFC_VV_SUPPRESS_RSP))
448 ndlp->nlp_flag |= NLP_SUPPRESS_RSP;
449 }
450
451 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
452 if (!mbox)
453 goto out;
454
455 /* Registering an existing RPI behaves differently for SLI3 vs SLI4 */
456 if (phba->sli_rev == LPFC_SLI_REV4)
457 lpfc_unreg_rpi(vport, ndlp);
458
459 rc = lpfc_reg_rpi(phba, vport->vpi, icmd->un.rcvels.remoteID,
460 (uint8_t *) sp, mbox, ndlp->nlp_rpi);
461 if (rc) {
462 mempool_free(mbox, phba->mbox_mem_pool);
463 goto out;
464 }
465
466 /* ACC PLOGI rsp command needs to execute first,
467 * queue this mbox command to be processed later.
468 */
469 mbox->mbox_cmpl = lpfc_mbx_cmpl_reg_login;
470 /*
471 * mbox->ctx_ndlp = lpfc_nlp_get(ndlp) deferred until mailbox
472 * command issued in lpfc_cmpl_els_acc().
473 */
474 mbox->vport = vport;
475 spin_lock_irq(shost->host_lock);
476 ndlp->nlp_flag |= (NLP_ACC_REGLOGIN | NLP_RCV_PLOGI);
477 spin_unlock_irq(shost->host_lock);
478
479 /*
480 * If there is an outstanding PLOGI issued, abort it before
481 * sending ACC rsp for received PLOGI. If pending plogi
482 * is not canceled here, the plogi will be rejected by
483 * remote port and will be retried. On a configuration with
484 * single discovery thread, this will cause a huge delay in
485 * discovery. Also this will cause multiple state machines
486 * running in parallel for this node.
487 * This only applies to a fabric environment.
488 */
489 if ((ndlp->nlp_state == NLP_STE_PLOGI_ISSUE) &&
490 (vport->fc_flag & FC_FABRIC)) {
491 /* software abort outstanding PLOGI */
492 lpfc_els_abort(phba, ndlp);
493 }
494
495 if ((vport->port_type == LPFC_NPIV_PORT &&
496 vport->cfg_restrict_login)) {
497
498 /* In order to preserve RPIs, we want to cleanup
499 * the default RPI the firmware created to rcv
500 * this ELS request. The only way to do this is
501 * to register, then unregister the RPI.
502 */
503 spin_lock_irq(shost->host_lock);
504 ndlp->nlp_flag |= NLP_RM_DFLT_RPI;
505 spin_unlock_irq(shost->host_lock);
506 stat.un.b.lsRjtRsnCode = LSRJT_INVALID_CMD;
507 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
508 rc = lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb,
509 ndlp, mbox);
510 if (rc)
511 mempool_free(mbox, phba->mbox_mem_pool);
512 return 1;
513 }
514 rc = lpfc_els_rsp_acc(vport, ELS_CMD_PLOGI, cmdiocb, ndlp, mbox);
515 if (rc)
516 mempool_free(mbox, phba->mbox_mem_pool);
517 return 1;
518 out:
519 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
520 stat.un.b.lsRjtRsnCodeExp = LSEXP_OUT_OF_RESOURCE;
521 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
522 return 0;
523 }
524
525 /**
526 * lpfc_mbx_cmpl_resume_rpi - Resume RPI completion routine
527 * @phba: pointer to lpfc hba data structure.
528 * @mboxq: pointer to mailbox object
529 *
530 * This routine is invoked to issue a completion to a rcv'ed
531 * ADISC or PDISC after the paused RPI has been resumed.
532 **/
533 static void
lpfc_mbx_cmpl_resume_rpi(struct lpfc_hba * phba,LPFC_MBOXQ_t * mboxq)534 lpfc_mbx_cmpl_resume_rpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
535 {
536 struct lpfc_vport *vport;
537 struct lpfc_iocbq *elsiocb;
538 struct lpfc_nodelist *ndlp;
539 uint32_t cmd;
540
541 elsiocb = (struct lpfc_iocbq *)mboxq->ctx_buf;
542 ndlp = (struct lpfc_nodelist *)mboxq->ctx_ndlp;
543 vport = mboxq->vport;
544 cmd = elsiocb->drvrTimeout;
545
546 if (cmd == ELS_CMD_ADISC) {
547 lpfc_els_rsp_adisc_acc(vport, elsiocb, ndlp);
548 } else {
549 lpfc_els_rsp_acc(vport, ELS_CMD_PLOGI, elsiocb,
550 ndlp, NULL);
551 }
552 kfree(elsiocb);
553 mempool_free(mboxq, phba->mbox_mem_pool);
554 }
555
556 static int
lpfc_rcv_padisc(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,struct lpfc_iocbq * cmdiocb)557 lpfc_rcv_padisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
558 struct lpfc_iocbq *cmdiocb)
559 {
560 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
561 struct lpfc_iocbq *elsiocb;
562 struct lpfc_dmabuf *pcmd;
563 struct serv_parm *sp;
564 struct lpfc_name *pnn, *ppn;
565 struct ls_rjt stat;
566 ADISC *ap;
567 IOCB_t *icmd;
568 uint32_t *lp;
569 uint32_t cmd;
570
571 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
572 lp = (uint32_t *) pcmd->virt;
573
574 cmd = *lp++;
575 if (cmd == ELS_CMD_ADISC) {
576 ap = (ADISC *) lp;
577 pnn = (struct lpfc_name *) & ap->nodeName;
578 ppn = (struct lpfc_name *) & ap->portName;
579 } else {
580 sp = (struct serv_parm *) lp;
581 pnn = (struct lpfc_name *) & sp->nodeName;
582 ppn = (struct lpfc_name *) & sp->portName;
583 }
584
585 icmd = &cmdiocb->iocb;
586 if (icmd->ulpStatus == 0 && lpfc_check_adisc(vport, ndlp, pnn, ppn)) {
587
588 /*
589 * As soon as we send ACC, the remote NPort can
590 * start sending us data. Thus, for SLI4 we must
591 * resume the RPI before the ACC goes out.
592 */
593 if (vport->phba->sli_rev == LPFC_SLI_REV4) {
594 elsiocb = kmalloc(sizeof(struct lpfc_iocbq),
595 GFP_KERNEL);
596 if (elsiocb) {
597
598 /* Save info from cmd IOCB used in rsp */
599 memcpy((uint8_t *)elsiocb, (uint8_t *)cmdiocb,
600 sizeof(struct lpfc_iocbq));
601
602 /* Save the ELS cmd */
603 elsiocb->drvrTimeout = cmd;
604
605 lpfc_sli4_resume_rpi(ndlp,
606 lpfc_mbx_cmpl_resume_rpi, elsiocb);
607 goto out;
608 }
609 }
610
611 if (cmd == ELS_CMD_ADISC) {
612 lpfc_els_rsp_adisc_acc(vport, cmdiocb, ndlp);
613 } else {
614 lpfc_els_rsp_acc(vport, ELS_CMD_PLOGI, cmdiocb,
615 ndlp, NULL);
616 }
617 out:
618 /* If we are authenticated, move to the proper state */
619 if (ndlp->nlp_type & (NLP_FCP_TARGET | NLP_NVME_TARGET))
620 lpfc_nlp_set_state(vport, ndlp, NLP_STE_MAPPED_NODE);
621 else
622 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
623
624 return 1;
625 }
626 /* Reject this request because invalid parameters */
627 stat.un.b.lsRjtRsvd0 = 0;
628 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
629 stat.un.b.lsRjtRsnCodeExp = LSEXP_SPARM_OPTIONS;
630 stat.un.b.vendorUnique = 0;
631 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
632
633 /* 1 sec timeout */
634 mod_timer(&ndlp->nlp_delayfunc, jiffies + msecs_to_jiffies(1000));
635
636 spin_lock_irq(shost->host_lock);
637 ndlp->nlp_flag |= NLP_DELAY_TMO;
638 spin_unlock_irq(shost->host_lock);
639 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
640 ndlp->nlp_prev_state = ndlp->nlp_state;
641 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
642 return 0;
643 }
644
645 static int
lpfc_rcv_logo(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,struct lpfc_iocbq * cmdiocb,uint32_t els_cmd)646 lpfc_rcv_logo(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
647 struct lpfc_iocbq *cmdiocb, uint32_t els_cmd)
648 {
649 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
650 struct lpfc_hba *phba = vport->phba;
651 struct lpfc_vport **vports;
652 int i, active_vlink_present = 0 ;
653
654 /* Put ndlp in NPR state with 1 sec timeout for plogi, ACC logo */
655 /* Only call LOGO ACC for first LOGO, this avoids sending unnecessary
656 * PLOGIs during LOGO storms from a device.
657 */
658 spin_lock_irq(shost->host_lock);
659 ndlp->nlp_flag |= NLP_LOGO_ACC;
660 spin_unlock_irq(shost->host_lock);
661 if (els_cmd == ELS_CMD_PRLO)
662 lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
663 else
664 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
665 if (ndlp->nlp_DID == Fabric_DID) {
666 if (vport->port_state <= LPFC_FDISC)
667 goto out;
668 lpfc_linkdown_port(vport);
669 spin_lock_irq(shost->host_lock);
670 vport->fc_flag |= FC_VPORT_LOGO_RCVD;
671 spin_unlock_irq(shost->host_lock);
672 vports = lpfc_create_vport_work_array(phba);
673 if (vports) {
674 for (i = 0; i <= phba->max_vports && vports[i] != NULL;
675 i++) {
676 if ((!(vports[i]->fc_flag &
677 FC_VPORT_LOGO_RCVD)) &&
678 (vports[i]->port_state > LPFC_FDISC)) {
679 active_vlink_present = 1;
680 break;
681 }
682 }
683 lpfc_destroy_vport_work_array(phba, vports);
684 }
685
686 /*
687 * Don't re-instantiate if vport is marked for deletion.
688 * If we are here first then vport_delete is going to wait
689 * for discovery to complete.
690 */
691 if (!(vport->load_flag & FC_UNLOADING) &&
692 active_vlink_present) {
693 /*
694 * If there are other active VLinks present,
695 * re-instantiate the Vlink using FDISC.
696 */
697 mod_timer(&ndlp->nlp_delayfunc,
698 jiffies + msecs_to_jiffies(1000));
699 spin_lock_irq(shost->host_lock);
700 ndlp->nlp_flag |= NLP_DELAY_TMO;
701 spin_unlock_irq(shost->host_lock);
702 ndlp->nlp_last_elscmd = ELS_CMD_FDISC;
703 vport->port_state = LPFC_FDISC;
704 } else {
705 spin_lock_irq(shost->host_lock);
706 phba->pport->fc_flag &= ~FC_LOGO_RCVD_DID_CHNG;
707 spin_unlock_irq(shost->host_lock);
708 lpfc_retry_pport_discovery(phba);
709 }
710 } else if ((!(ndlp->nlp_type & NLP_FABRIC) &&
711 ((ndlp->nlp_type & NLP_FCP_TARGET) ||
712 !(ndlp->nlp_type & NLP_FCP_INITIATOR))) ||
713 (ndlp->nlp_state == NLP_STE_ADISC_ISSUE)) {
714 /* Only try to re-login if this is NOT a Fabric Node */
715 mod_timer(&ndlp->nlp_delayfunc,
716 jiffies + msecs_to_jiffies(1000 * 1));
717 spin_lock_irq(shost->host_lock);
718 ndlp->nlp_flag |= NLP_DELAY_TMO;
719 spin_unlock_irq(shost->host_lock);
720
721 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
722 }
723 out:
724 ndlp->nlp_prev_state = ndlp->nlp_state;
725 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
726
727 spin_lock_irq(shost->host_lock);
728 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
729 spin_unlock_irq(shost->host_lock);
730 /* The driver has to wait until the ACC completes before it continues
731 * processing the LOGO. The action will resume in
732 * lpfc_cmpl_els_logo_acc routine. Since part of processing includes an
733 * unreg_login, the driver waits so the ACC does not get aborted.
734 */
735 return 0;
736 }
737
738 static uint32_t
lpfc_rcv_prli_support_check(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,struct lpfc_iocbq * cmdiocb)739 lpfc_rcv_prli_support_check(struct lpfc_vport *vport,
740 struct lpfc_nodelist *ndlp,
741 struct lpfc_iocbq *cmdiocb)
742 {
743 struct ls_rjt stat;
744 uint32_t *payload;
745 uint32_t cmd;
746
747 payload = ((struct lpfc_dmabuf *)cmdiocb->context2)->virt;
748 cmd = *payload;
749 if (vport->phba->nvmet_support) {
750 /* Must be a NVME PRLI */
751 if (cmd == ELS_CMD_PRLI)
752 goto out;
753 } else {
754 /* Initiator mode. */
755 if (!vport->nvmei_support && (cmd == ELS_CMD_NVMEPRLI))
756 goto out;
757 }
758 return 1;
759 out:
760 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NVME_DISC,
761 "6115 Rcv PRLI (%x) check failed: ndlp rpi %d "
762 "state x%x flags x%x\n",
763 cmd, ndlp->nlp_rpi, ndlp->nlp_state,
764 ndlp->nlp_flag);
765 memset(&stat, 0, sizeof(struct ls_rjt));
766 stat.un.b.lsRjtRsnCode = LSRJT_CMD_UNSUPPORTED;
767 stat.un.b.lsRjtRsnCodeExp = LSEXP_REQ_UNSUPPORTED;
768 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb,
769 ndlp, NULL);
770 return 0;
771 }
772
773 static void
lpfc_rcv_prli(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,struct lpfc_iocbq * cmdiocb)774 lpfc_rcv_prli(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
775 struct lpfc_iocbq *cmdiocb)
776 {
777 struct lpfc_hba *phba = vport->phba;
778 struct lpfc_dmabuf *pcmd;
779 uint32_t *lp;
780 PRLI *npr;
781 struct fc_rport *rport = ndlp->rport;
782 u32 roles;
783
784 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
785 lp = (uint32_t *) pcmd->virt;
786 npr = (PRLI *) ((uint8_t *) lp + sizeof (uint32_t));
787
788 if ((npr->prliType == PRLI_FCP_TYPE) ||
789 (npr->prliType == PRLI_NVME_TYPE)) {
790 if (npr->initiatorFunc) {
791 if (npr->prliType == PRLI_FCP_TYPE)
792 ndlp->nlp_type |= NLP_FCP_INITIATOR;
793 if (npr->prliType == PRLI_NVME_TYPE)
794 ndlp->nlp_type |= NLP_NVME_INITIATOR;
795 }
796 if (npr->targetFunc) {
797 if (npr->prliType == PRLI_FCP_TYPE)
798 ndlp->nlp_type |= NLP_FCP_TARGET;
799 if (npr->prliType == PRLI_NVME_TYPE)
800 ndlp->nlp_type |= NLP_NVME_TARGET;
801 if (npr->writeXferRdyDis)
802 ndlp->nlp_flag |= NLP_FIRSTBURST;
803 }
804 if (npr->Retry && ndlp->nlp_type &
805 (NLP_FCP_INITIATOR | NLP_FCP_TARGET))
806 ndlp->nlp_fcp_info |= NLP_FCP_2_DEVICE;
807
808 if (npr->Retry && phba->nsler &&
809 ndlp->nlp_type & (NLP_NVME_INITIATOR | NLP_NVME_TARGET))
810 ndlp->nlp_nvme_info |= NLP_NVME_NSLER;
811
812
813 /* If this driver is in nvme target mode, set the ndlp's fc4
814 * type to NVME provided the PRLI response claims NVME FC4
815 * type. Target mode does not issue gft_id so doesn't get
816 * the fc4 type set until now.
817 */
818 if (phba->nvmet_support && (npr->prliType == PRLI_NVME_TYPE)) {
819 ndlp->nlp_fc4_type |= NLP_FC4_NVME;
820 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
821 }
822 if (npr->prliType == PRLI_FCP_TYPE)
823 ndlp->nlp_fc4_type |= NLP_FC4_FCP;
824 }
825 if (rport) {
826 /* We need to update the rport role values */
827 roles = FC_RPORT_ROLE_UNKNOWN;
828 if (ndlp->nlp_type & NLP_FCP_INITIATOR)
829 roles |= FC_RPORT_ROLE_FCP_INITIATOR;
830 if (ndlp->nlp_type & NLP_FCP_TARGET)
831 roles |= FC_RPORT_ROLE_FCP_TARGET;
832
833 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
834 "rport rolechg: role:x%x did:x%x flg:x%x",
835 roles, ndlp->nlp_DID, ndlp->nlp_flag);
836
837 if (vport->cfg_enable_fc4_type != LPFC_ENABLE_NVME)
838 fc_remote_port_rolechg(rport, roles);
839 }
840 }
841
842 static uint32_t
lpfc_disc_set_adisc(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp)843 lpfc_disc_set_adisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
844 {
845 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
846
847 if (!(ndlp->nlp_flag & NLP_RPI_REGISTERED)) {
848 spin_lock_irq(shost->host_lock);
849 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
850 spin_unlock_irq(shost->host_lock);
851 return 0;
852 }
853
854 if (!(vport->fc_flag & FC_PT2PT)) {
855 /* Check config parameter use-adisc or FCP-2 */
856 if (vport->cfg_use_adisc && ((vport->fc_flag & FC_RSCN_MODE) ||
857 ((ndlp->nlp_fcp_info & NLP_FCP_2_DEVICE) &&
858 (ndlp->nlp_type & NLP_FCP_TARGET)))) {
859 spin_lock_irq(shost->host_lock);
860 ndlp->nlp_flag |= NLP_NPR_ADISC;
861 spin_unlock_irq(shost->host_lock);
862 return 1;
863 }
864 }
865
866 spin_lock_irq(shost->host_lock);
867 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
868 spin_unlock_irq(shost->host_lock);
869 lpfc_unreg_rpi(vport, ndlp);
870 return 0;
871 }
872
873 /**
874 * lpfc_release_rpi - Release a RPI by issuing unreg_login mailbox cmd.
875 * @phba : Pointer to lpfc_hba structure.
876 * @vport: Pointer to lpfc_vport structure.
877 * @rpi : rpi to be release.
878 *
879 * This function will send a unreg_login mailbox command to the firmware
880 * to release a rpi.
881 **/
882 static void
lpfc_release_rpi(struct lpfc_hba * phba,struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,uint16_t rpi)883 lpfc_release_rpi(struct lpfc_hba *phba, struct lpfc_vport *vport,
884 struct lpfc_nodelist *ndlp, uint16_t rpi)
885 {
886 LPFC_MBOXQ_t *pmb;
887 int rc;
888
889 /* If there is already an UNREG in progress for this ndlp,
890 * no need to queue up another one.
891 */
892 if (ndlp->nlp_flag & NLP_UNREG_INP) {
893 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
894 "1435 release_rpi SKIP UNREG x%x on "
895 "NPort x%x deferred x%x flg x%x "
896 "Data: x%px\n",
897 ndlp->nlp_rpi, ndlp->nlp_DID,
898 ndlp->nlp_defer_did,
899 ndlp->nlp_flag, ndlp);
900 return;
901 }
902
903 pmb = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool,
904 GFP_KERNEL);
905 if (!pmb)
906 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
907 "2796 mailbox memory allocation failed \n");
908 else {
909 lpfc_unreg_login(phba, vport->vpi, rpi, pmb);
910 pmb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
911 pmb->vport = vport;
912 pmb->ctx_ndlp = ndlp;
913
914 if (((ndlp->nlp_DID & Fabric_DID_MASK) != Fabric_DID_MASK) &&
915 (!(vport->fc_flag & FC_OFFLINE_MODE)))
916 ndlp->nlp_flag |= NLP_UNREG_INP;
917
918 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
919 "1437 release_rpi UNREG x%x "
920 "on NPort x%x flg x%x\n",
921 ndlp->nlp_rpi, ndlp->nlp_DID, ndlp->nlp_flag);
922
923 rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);
924 if (rc == MBX_NOT_FINISHED)
925 mempool_free(pmb, phba->mbox_mem_pool);
926 }
927 }
928
929 static uint32_t
lpfc_disc_illegal(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)930 lpfc_disc_illegal(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
931 void *arg, uint32_t evt)
932 {
933 struct lpfc_hba *phba;
934 LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg;
935 uint16_t rpi;
936
937 phba = vport->phba;
938 /* Release the RPI if reglogin completing */
939 if (!(phba->pport->load_flag & FC_UNLOADING) &&
940 (evt == NLP_EVT_CMPL_REG_LOGIN) &&
941 (!pmb->u.mb.mbxStatus)) {
942 rpi = pmb->u.mb.un.varWords[0];
943 lpfc_release_rpi(phba, vport, ndlp, rpi);
944 }
945 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
946 "0271 Illegal State Transition: node x%x "
947 "event x%x, state x%x Data: x%x x%x\n",
948 ndlp->nlp_DID, evt, ndlp->nlp_state, ndlp->nlp_rpi,
949 ndlp->nlp_flag);
950 return ndlp->nlp_state;
951 }
952
953 static uint32_t
lpfc_cmpl_plogi_illegal(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)954 lpfc_cmpl_plogi_illegal(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
955 void *arg, uint32_t evt)
956 {
957 /* This transition is only legal if we previously
958 * rcv'ed a PLOGI. Since we don't want 2 discovery threads
959 * working on the same NPortID, do nothing for this thread
960 * to stop it.
961 */
962 if (!(ndlp->nlp_flag & NLP_RCV_PLOGI)) {
963 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
964 "0272 Illegal State Transition: node x%x "
965 "event x%x, state x%x Data: x%x x%x\n",
966 ndlp->nlp_DID, evt, ndlp->nlp_state, ndlp->nlp_rpi,
967 ndlp->nlp_flag);
968 }
969 return ndlp->nlp_state;
970 }
971
972 /* Start of Discovery State Machine routines */
973
974 static uint32_t
lpfc_rcv_plogi_unused_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)975 lpfc_rcv_plogi_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
976 void *arg, uint32_t evt)
977 {
978 struct lpfc_iocbq *cmdiocb;
979
980 cmdiocb = (struct lpfc_iocbq *) arg;
981
982 if (lpfc_rcv_plogi(vport, ndlp, cmdiocb)) {
983 return ndlp->nlp_state;
984 }
985 return NLP_STE_FREED_NODE;
986 }
987
988 static uint32_t
lpfc_rcv_els_unused_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)989 lpfc_rcv_els_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
990 void *arg, uint32_t evt)
991 {
992 lpfc_issue_els_logo(vport, ndlp, 0);
993 return ndlp->nlp_state;
994 }
995
996 static uint32_t
lpfc_rcv_logo_unused_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)997 lpfc_rcv_logo_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
998 void *arg, uint32_t evt)
999 {
1000 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1001 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1002
1003 spin_lock_irq(shost->host_lock);
1004 ndlp->nlp_flag |= NLP_LOGO_ACC;
1005 spin_unlock_irq(shost->host_lock);
1006 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
1007
1008 return ndlp->nlp_state;
1009 }
1010
1011 static uint32_t
lpfc_cmpl_logo_unused_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1012 lpfc_cmpl_logo_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1013 void *arg, uint32_t evt)
1014 {
1015 return NLP_STE_FREED_NODE;
1016 }
1017
1018 static uint32_t
lpfc_device_rm_unused_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1019 lpfc_device_rm_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1020 void *arg, uint32_t evt)
1021 {
1022 return NLP_STE_FREED_NODE;
1023 }
1024
1025 static uint32_t
lpfc_device_recov_unused_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1026 lpfc_device_recov_unused_node(struct lpfc_vport *vport,
1027 struct lpfc_nodelist *ndlp,
1028 void *arg, uint32_t evt)
1029 {
1030 return ndlp->nlp_state;
1031 }
1032
1033 static uint32_t
lpfc_rcv_plogi_plogi_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1034 lpfc_rcv_plogi_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1035 void *arg, uint32_t evt)
1036 {
1037 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1038 struct lpfc_hba *phba = vport->phba;
1039 struct lpfc_iocbq *cmdiocb = arg;
1040 struct lpfc_dmabuf *pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
1041 uint32_t *lp = (uint32_t *) pcmd->virt;
1042 struct serv_parm *sp = (struct serv_parm *) (lp + 1);
1043 struct ls_rjt stat;
1044 int port_cmp;
1045
1046 memset(&stat, 0, sizeof (struct ls_rjt));
1047
1048 /* For a PLOGI, we only accept if our portname is less
1049 * than the remote portname.
1050 */
1051 phba->fc_stat.elsLogiCol++;
1052 port_cmp = memcmp(&vport->fc_portname, &sp->portName,
1053 sizeof(struct lpfc_name));
1054
1055 if (port_cmp >= 0) {
1056 /* Reject this request because the remote node will accept
1057 ours */
1058 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
1059 stat.un.b.lsRjtRsnCodeExp = LSEXP_CMD_IN_PROGRESS;
1060 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
1061 NULL);
1062 } else {
1063 if (lpfc_rcv_plogi(vport, ndlp, cmdiocb) &&
1064 (ndlp->nlp_flag & NLP_NPR_2B_DISC) &&
1065 (vport->num_disc_nodes)) {
1066 spin_lock_irq(shost->host_lock);
1067 ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
1068 spin_unlock_irq(shost->host_lock);
1069 /* Check if there are more PLOGIs to be sent */
1070 lpfc_more_plogi(vport);
1071 if (vport->num_disc_nodes == 0) {
1072 spin_lock_irq(shost->host_lock);
1073 vport->fc_flag &= ~FC_NDISC_ACTIVE;
1074 spin_unlock_irq(shost->host_lock);
1075 lpfc_can_disctmo(vport);
1076 lpfc_end_rscn(vport);
1077 }
1078 }
1079 } /* If our portname was less */
1080
1081 return ndlp->nlp_state;
1082 }
1083
1084 static uint32_t
lpfc_rcv_prli_plogi_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1085 lpfc_rcv_prli_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1086 void *arg, uint32_t evt)
1087 {
1088 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1089 struct ls_rjt stat;
1090
1091 memset(&stat, 0, sizeof (struct ls_rjt));
1092 stat.un.b.lsRjtRsnCode = LSRJT_LOGICAL_BSY;
1093 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
1094 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
1095 return ndlp->nlp_state;
1096 }
1097
1098 static uint32_t
lpfc_rcv_logo_plogi_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1099 lpfc_rcv_logo_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1100 void *arg, uint32_t evt)
1101 {
1102 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1103
1104 /* Retrieve RPI from LOGO IOCB. RPI is used for CMD_ABORT_XRI_CN */
1105 if (vport->phba->sli_rev == LPFC_SLI_REV3)
1106 ndlp->nlp_rpi = cmdiocb->iocb.ulpIoTag;
1107 /* software abort outstanding PLOGI */
1108 lpfc_els_abort(vport->phba, ndlp);
1109
1110 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1111 return ndlp->nlp_state;
1112 }
1113
1114 static uint32_t
lpfc_rcv_els_plogi_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1115 lpfc_rcv_els_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1116 void *arg, uint32_t evt)
1117 {
1118 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1119 struct lpfc_hba *phba = vport->phba;
1120 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1121
1122 /* software abort outstanding PLOGI */
1123 lpfc_els_abort(phba, ndlp);
1124
1125 if (evt == NLP_EVT_RCV_LOGO) {
1126 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
1127 } else {
1128 lpfc_issue_els_logo(vport, ndlp, 0);
1129 }
1130
1131 /* Put ndlp in npr state set plogi timer for 1 sec */
1132 mod_timer(&ndlp->nlp_delayfunc, jiffies + msecs_to_jiffies(1000 * 1));
1133 spin_lock_irq(shost->host_lock);
1134 ndlp->nlp_flag |= NLP_DELAY_TMO;
1135 spin_unlock_irq(shost->host_lock);
1136 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
1137 ndlp->nlp_prev_state = NLP_STE_PLOGI_ISSUE;
1138 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1139
1140 return ndlp->nlp_state;
1141 }
1142
1143 static uint32_t
lpfc_cmpl_plogi_plogi_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1144 lpfc_cmpl_plogi_plogi_issue(struct lpfc_vport *vport,
1145 struct lpfc_nodelist *ndlp,
1146 void *arg,
1147 uint32_t evt)
1148 {
1149 struct lpfc_hba *phba = vport->phba;
1150 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1151 struct lpfc_iocbq *cmdiocb, *rspiocb;
1152 struct lpfc_dmabuf *pcmd, *prsp, *mp;
1153 uint32_t *lp;
1154 uint32_t vid, flag;
1155 IOCB_t *irsp;
1156 struct serv_parm *sp;
1157 uint32_t ed_tov;
1158 LPFC_MBOXQ_t *mbox;
1159 int rc;
1160
1161 cmdiocb = (struct lpfc_iocbq *) arg;
1162 rspiocb = cmdiocb->context_un.rsp_iocb;
1163
1164 if (ndlp->nlp_flag & NLP_ACC_REGLOGIN) {
1165 /* Recovery from PLOGI collision logic */
1166 return ndlp->nlp_state;
1167 }
1168
1169 irsp = &rspiocb->iocb;
1170
1171 if (irsp->ulpStatus)
1172 goto out;
1173
1174 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
1175
1176 prsp = list_get_first(&pcmd->list, struct lpfc_dmabuf, list);
1177 if (!prsp)
1178 goto out;
1179
1180 lp = (uint32_t *) prsp->virt;
1181 sp = (struct serv_parm *) ((uint8_t *) lp + sizeof (uint32_t));
1182
1183 /* Some switches have FDMI servers returning 0 for WWN */
1184 if ((ndlp->nlp_DID != FDMI_DID) &&
1185 (wwn_to_u64(sp->portName.u.wwn) == 0 ||
1186 wwn_to_u64(sp->nodeName.u.wwn) == 0)) {
1187 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
1188 "0142 PLOGI RSP: Invalid WWN.\n");
1189 goto out;
1190 }
1191 if (!lpfc_check_sparm(vport, ndlp, sp, CLASS3, 0))
1192 goto out;
1193 /* PLOGI chkparm OK */
1194 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
1195 "0121 PLOGI chkparm OK Data: x%x x%x x%x x%x\n",
1196 ndlp->nlp_DID, ndlp->nlp_state,
1197 ndlp->nlp_flag, ndlp->nlp_rpi);
1198 if (vport->cfg_fcp_class == 2 && (sp->cls2.classValid))
1199 ndlp->nlp_fcp_info |= CLASS2;
1200 else
1201 ndlp->nlp_fcp_info |= CLASS3;
1202
1203 ndlp->nlp_class_sup = 0;
1204 if (sp->cls1.classValid)
1205 ndlp->nlp_class_sup |= FC_COS_CLASS1;
1206 if (sp->cls2.classValid)
1207 ndlp->nlp_class_sup |= FC_COS_CLASS2;
1208 if (sp->cls3.classValid)
1209 ndlp->nlp_class_sup |= FC_COS_CLASS3;
1210 if (sp->cls4.classValid)
1211 ndlp->nlp_class_sup |= FC_COS_CLASS4;
1212 ndlp->nlp_maxframe =
1213 ((sp->cmn.bbRcvSizeMsb & 0x0F) << 8) | sp->cmn.bbRcvSizeLsb;
1214
1215 if ((vport->fc_flag & FC_PT2PT) &&
1216 (vport->fc_flag & FC_PT2PT_PLOGI)) {
1217 ed_tov = be32_to_cpu(sp->cmn.e_d_tov);
1218 if (sp->cmn.edtovResolution) {
1219 /* E_D_TOV ticks are in nanoseconds */
1220 ed_tov = (phba->fc_edtov + 999999) / 1000000;
1221 }
1222
1223 ndlp->nlp_flag &= ~NLP_SUPPRESS_RSP;
1224 if ((phba->sli.sli_flag & LPFC_SLI_SUPPRESS_RSP) &&
1225 sp->cmn.valid_vendor_ver_level) {
1226 vid = be32_to_cpu(sp->un.vv.vid);
1227 flag = be32_to_cpu(sp->un.vv.flags);
1228 if ((vid == LPFC_VV_EMLX_ID) &&
1229 (flag & LPFC_VV_SUPPRESS_RSP))
1230 ndlp->nlp_flag |= NLP_SUPPRESS_RSP;
1231 }
1232
1233 /*
1234 * Use the larger EDTOV
1235 * RATOV = 2 * EDTOV for pt-to-pt
1236 */
1237 if (ed_tov > phba->fc_edtov)
1238 phba->fc_edtov = ed_tov;
1239 phba->fc_ratov = (2 * phba->fc_edtov) / 1000;
1240
1241 memcpy(&phba->fc_fabparam, sp, sizeof(struct serv_parm));
1242
1243 /* Issue config_link / reg_vfi to account for updated TOV's */
1244 if (phba->sli_rev == LPFC_SLI_REV4) {
1245 lpfc_issue_reg_vfi(vport);
1246 } else {
1247 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1248 if (!mbox) {
1249 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
1250 "0133 PLOGI: no memory "
1251 "for config_link "
1252 "Data: x%x x%x x%x x%x\n",
1253 ndlp->nlp_DID, ndlp->nlp_state,
1254 ndlp->nlp_flag, ndlp->nlp_rpi);
1255 goto out;
1256 }
1257
1258 lpfc_config_link(phba, mbox);
1259
1260 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
1261 mbox->vport = vport;
1262 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
1263 if (rc == MBX_NOT_FINISHED) {
1264 mempool_free(mbox, phba->mbox_mem_pool);
1265 goto out;
1266 }
1267 }
1268 }
1269
1270 lpfc_unreg_rpi(vport, ndlp);
1271
1272 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1273 if (!mbox) {
1274 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
1275 "0018 PLOGI: no memory for reg_login "
1276 "Data: x%x x%x x%x x%x\n",
1277 ndlp->nlp_DID, ndlp->nlp_state,
1278 ndlp->nlp_flag, ndlp->nlp_rpi);
1279 goto out;
1280 }
1281
1282 if (lpfc_reg_rpi(phba, vport->vpi, irsp->un.elsreq64.remoteID,
1283 (uint8_t *) sp, mbox, ndlp->nlp_rpi) == 0) {
1284 switch (ndlp->nlp_DID) {
1285 case NameServer_DID:
1286 mbox->mbox_cmpl = lpfc_mbx_cmpl_ns_reg_login;
1287 break;
1288 case FDMI_DID:
1289 mbox->mbox_cmpl = lpfc_mbx_cmpl_fdmi_reg_login;
1290 break;
1291 default:
1292 ndlp->nlp_flag |= NLP_REG_LOGIN_SEND;
1293 mbox->mbox_cmpl = lpfc_mbx_cmpl_reg_login;
1294 }
1295 mbox->ctx_ndlp = lpfc_nlp_get(ndlp);
1296 mbox->vport = vport;
1297 if (lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT)
1298 != MBX_NOT_FINISHED) {
1299 lpfc_nlp_set_state(vport, ndlp,
1300 NLP_STE_REG_LOGIN_ISSUE);
1301 return ndlp->nlp_state;
1302 }
1303 if (ndlp->nlp_flag & NLP_REG_LOGIN_SEND)
1304 ndlp->nlp_flag &= ~NLP_REG_LOGIN_SEND;
1305 /* decrement node reference count to the failed mbox
1306 * command
1307 */
1308 lpfc_nlp_put(ndlp);
1309 mp = (struct lpfc_dmabuf *)mbox->ctx_buf;
1310 lpfc_mbuf_free(phba, mp->virt, mp->phys);
1311 kfree(mp);
1312 mempool_free(mbox, phba->mbox_mem_pool);
1313
1314 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
1315 "0134 PLOGI: cannot issue reg_login "
1316 "Data: x%x x%x x%x x%x\n",
1317 ndlp->nlp_DID, ndlp->nlp_state,
1318 ndlp->nlp_flag, ndlp->nlp_rpi);
1319 } else {
1320 mempool_free(mbox, phba->mbox_mem_pool);
1321
1322 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
1323 "0135 PLOGI: cannot format reg_login "
1324 "Data: x%x x%x x%x x%x\n",
1325 ndlp->nlp_DID, ndlp->nlp_state,
1326 ndlp->nlp_flag, ndlp->nlp_rpi);
1327 }
1328
1329
1330 out:
1331 if (ndlp->nlp_DID == NameServer_DID) {
1332 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
1333 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
1334 "0261 Cannot Register NameServer login\n");
1335 }
1336
1337 /*
1338 ** In case the node reference counter does not go to zero, ensure that
1339 ** the stale state for the node is not processed.
1340 */
1341
1342 ndlp->nlp_prev_state = ndlp->nlp_state;
1343 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1344 spin_lock_irq(shost->host_lock);
1345 ndlp->nlp_flag |= NLP_DEFER_RM;
1346 spin_unlock_irq(shost->host_lock);
1347 return NLP_STE_FREED_NODE;
1348 }
1349
1350 static uint32_t
lpfc_cmpl_logo_plogi_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1351 lpfc_cmpl_logo_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1352 void *arg, uint32_t evt)
1353 {
1354 return ndlp->nlp_state;
1355 }
1356
1357 static uint32_t
lpfc_cmpl_reglogin_plogi_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1358 lpfc_cmpl_reglogin_plogi_issue(struct lpfc_vport *vport,
1359 struct lpfc_nodelist *ndlp, void *arg, uint32_t evt)
1360 {
1361 struct lpfc_hba *phba;
1362 LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg;
1363 MAILBOX_t *mb = &pmb->u.mb;
1364 uint16_t rpi;
1365
1366 phba = vport->phba;
1367 /* Release the RPI */
1368 if (!(phba->pport->load_flag & FC_UNLOADING) &&
1369 !mb->mbxStatus) {
1370 rpi = pmb->u.mb.un.varWords[0];
1371 lpfc_release_rpi(phba, vport, ndlp, rpi);
1372 }
1373 return ndlp->nlp_state;
1374 }
1375
1376 static uint32_t
lpfc_device_rm_plogi_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1377 lpfc_device_rm_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1378 void *arg, uint32_t evt)
1379 {
1380 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1381
1382 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1383 spin_lock_irq(shost->host_lock);
1384 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1385 spin_unlock_irq(shost->host_lock);
1386 return ndlp->nlp_state;
1387 } else {
1388 /* software abort outstanding PLOGI */
1389 lpfc_els_abort(vport->phba, ndlp);
1390
1391 lpfc_drop_node(vport, ndlp);
1392 return NLP_STE_FREED_NODE;
1393 }
1394 }
1395
1396 static uint32_t
lpfc_device_recov_plogi_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1397 lpfc_device_recov_plogi_issue(struct lpfc_vport *vport,
1398 struct lpfc_nodelist *ndlp,
1399 void *arg,
1400 uint32_t evt)
1401 {
1402 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1403 struct lpfc_hba *phba = vport->phba;
1404
1405 /* Don't do anything that will mess up processing of the
1406 * previous RSCN.
1407 */
1408 if (vport->fc_flag & FC_RSCN_DEFERRED)
1409 return ndlp->nlp_state;
1410
1411 /* software abort outstanding PLOGI */
1412 lpfc_els_abort(phba, ndlp);
1413
1414 ndlp->nlp_prev_state = NLP_STE_PLOGI_ISSUE;
1415 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1416 spin_lock_irq(shost->host_lock);
1417 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1418 spin_unlock_irq(shost->host_lock);
1419
1420 return ndlp->nlp_state;
1421 }
1422
1423 static uint32_t
lpfc_rcv_plogi_adisc_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1424 lpfc_rcv_plogi_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1425 void *arg, uint32_t evt)
1426 {
1427 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1428 struct lpfc_hba *phba = vport->phba;
1429 struct lpfc_iocbq *cmdiocb;
1430
1431 /* software abort outstanding ADISC */
1432 lpfc_els_abort(phba, ndlp);
1433
1434 cmdiocb = (struct lpfc_iocbq *) arg;
1435
1436 if (lpfc_rcv_plogi(vport, ndlp, cmdiocb)) {
1437 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1438 spin_lock_irq(shost->host_lock);
1439 ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
1440 spin_unlock_irq(shost->host_lock);
1441 if (vport->num_disc_nodes)
1442 lpfc_more_adisc(vport);
1443 }
1444 return ndlp->nlp_state;
1445 }
1446 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1447 lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
1448 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
1449
1450 return ndlp->nlp_state;
1451 }
1452
1453 static uint32_t
lpfc_rcv_prli_adisc_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1454 lpfc_rcv_prli_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1455 void *arg, uint32_t evt)
1456 {
1457 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1458
1459 if (lpfc_rcv_prli_support_check(vport, ndlp, cmdiocb))
1460 lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1461 return ndlp->nlp_state;
1462 }
1463
1464 static uint32_t
lpfc_rcv_logo_adisc_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1465 lpfc_rcv_logo_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1466 void *arg, uint32_t evt)
1467 {
1468 struct lpfc_hba *phba = vport->phba;
1469 struct lpfc_iocbq *cmdiocb;
1470
1471 cmdiocb = (struct lpfc_iocbq *) arg;
1472
1473 /* software abort outstanding ADISC */
1474 lpfc_els_abort(phba, ndlp);
1475
1476 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1477 return ndlp->nlp_state;
1478 }
1479
1480 static uint32_t
lpfc_rcv_padisc_adisc_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1481 lpfc_rcv_padisc_adisc_issue(struct lpfc_vport *vport,
1482 struct lpfc_nodelist *ndlp,
1483 void *arg, uint32_t evt)
1484 {
1485 struct lpfc_iocbq *cmdiocb;
1486
1487 cmdiocb = (struct lpfc_iocbq *) arg;
1488
1489 lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1490 return ndlp->nlp_state;
1491 }
1492
1493 static uint32_t
lpfc_rcv_prlo_adisc_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1494 lpfc_rcv_prlo_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1495 void *arg, uint32_t evt)
1496 {
1497 struct lpfc_iocbq *cmdiocb;
1498
1499 cmdiocb = (struct lpfc_iocbq *) arg;
1500
1501 /* Treat like rcv logo */
1502 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_PRLO);
1503 return ndlp->nlp_state;
1504 }
1505
1506 static uint32_t
lpfc_cmpl_adisc_adisc_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1507 lpfc_cmpl_adisc_adisc_issue(struct lpfc_vport *vport,
1508 struct lpfc_nodelist *ndlp,
1509 void *arg, uint32_t evt)
1510 {
1511 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1512 struct lpfc_hba *phba = vport->phba;
1513 struct lpfc_iocbq *cmdiocb, *rspiocb;
1514 IOCB_t *irsp;
1515 ADISC *ap;
1516 int rc;
1517
1518 cmdiocb = (struct lpfc_iocbq *) arg;
1519 rspiocb = cmdiocb->context_un.rsp_iocb;
1520
1521 ap = (ADISC *)lpfc_check_elscmpl_iocb(phba, cmdiocb, rspiocb);
1522 irsp = &rspiocb->iocb;
1523
1524 if ((irsp->ulpStatus) ||
1525 (!lpfc_check_adisc(vport, ndlp, &ap->nodeName, &ap->portName))) {
1526 /* 1 sec timeout */
1527 mod_timer(&ndlp->nlp_delayfunc,
1528 jiffies + msecs_to_jiffies(1000));
1529 spin_lock_irq(shost->host_lock);
1530 ndlp->nlp_flag |= NLP_DELAY_TMO;
1531 spin_unlock_irq(shost->host_lock);
1532 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
1533
1534 memset(&ndlp->nlp_nodename, 0, sizeof(struct lpfc_name));
1535 memset(&ndlp->nlp_portname, 0, sizeof(struct lpfc_name));
1536
1537 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1538 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1539 lpfc_unreg_rpi(vport, ndlp);
1540 return ndlp->nlp_state;
1541 }
1542
1543 if (phba->sli_rev == LPFC_SLI_REV4) {
1544 rc = lpfc_sli4_resume_rpi(ndlp, NULL, NULL);
1545 if (rc) {
1546 /* Stay in state and retry. */
1547 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1548 return ndlp->nlp_state;
1549 }
1550 }
1551
1552 if (ndlp->nlp_type & NLP_FCP_TARGET) {
1553 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1554 lpfc_nlp_set_state(vport, ndlp, NLP_STE_MAPPED_NODE);
1555 } else {
1556 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1557 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1558 }
1559
1560 return ndlp->nlp_state;
1561 }
1562
1563 static uint32_t
lpfc_device_rm_adisc_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1564 lpfc_device_rm_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1565 void *arg, uint32_t evt)
1566 {
1567 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1568
1569 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1570 spin_lock_irq(shost->host_lock);
1571 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1572 spin_unlock_irq(shost->host_lock);
1573 return ndlp->nlp_state;
1574 } else {
1575 /* software abort outstanding ADISC */
1576 lpfc_els_abort(vport->phba, ndlp);
1577
1578 lpfc_drop_node(vport, ndlp);
1579 return NLP_STE_FREED_NODE;
1580 }
1581 }
1582
1583 static uint32_t
lpfc_device_recov_adisc_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1584 lpfc_device_recov_adisc_issue(struct lpfc_vport *vport,
1585 struct lpfc_nodelist *ndlp,
1586 void *arg,
1587 uint32_t evt)
1588 {
1589 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1590 struct lpfc_hba *phba = vport->phba;
1591
1592 /* Don't do anything that will mess up processing of the
1593 * previous RSCN.
1594 */
1595 if (vport->fc_flag & FC_RSCN_DEFERRED)
1596 return ndlp->nlp_state;
1597
1598 /* software abort outstanding ADISC */
1599 lpfc_els_abort(phba, ndlp);
1600
1601 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1602 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1603 spin_lock_irq(shost->host_lock);
1604 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1605 spin_unlock_irq(shost->host_lock);
1606 lpfc_disc_set_adisc(vport, ndlp);
1607 return ndlp->nlp_state;
1608 }
1609
1610 static uint32_t
lpfc_rcv_plogi_reglogin_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1611 lpfc_rcv_plogi_reglogin_issue(struct lpfc_vport *vport,
1612 struct lpfc_nodelist *ndlp,
1613 void *arg,
1614 uint32_t evt)
1615 {
1616 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1617
1618 lpfc_rcv_plogi(vport, ndlp, cmdiocb);
1619 return ndlp->nlp_state;
1620 }
1621
1622 static uint32_t
lpfc_rcv_prli_reglogin_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1623 lpfc_rcv_prli_reglogin_issue(struct lpfc_vport *vport,
1624 struct lpfc_nodelist *ndlp,
1625 void *arg,
1626 uint32_t evt)
1627 {
1628 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1629 struct ls_rjt stat;
1630
1631 if (!lpfc_rcv_prli_support_check(vport, ndlp, cmdiocb)) {
1632 return ndlp->nlp_state;
1633 }
1634 if (vport->phba->nvmet_support) {
1635 /* NVME Target mode. Handle and respond to the PRLI and
1636 * transition to UNMAPPED provided the RPI has completed
1637 * registration.
1638 */
1639 if (ndlp->nlp_flag & NLP_RPI_REGISTERED) {
1640 lpfc_rcv_prli(vport, ndlp, cmdiocb);
1641 lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1642 } else {
1643 /* RPI registration has not completed. Reject the PRLI
1644 * to prevent an illegal state transition when the
1645 * rpi registration does complete.
1646 */
1647 memset(&stat, 0, sizeof(struct ls_rjt));
1648 stat.un.b.lsRjtRsnCode = LSRJT_LOGICAL_BSY;
1649 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
1650 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb,
1651 ndlp, NULL);
1652 return ndlp->nlp_state;
1653 }
1654 } else {
1655 /* Initiator mode. */
1656 lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1657 }
1658 return ndlp->nlp_state;
1659 }
1660
1661 static uint32_t
lpfc_rcv_logo_reglogin_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1662 lpfc_rcv_logo_reglogin_issue(struct lpfc_vport *vport,
1663 struct lpfc_nodelist *ndlp,
1664 void *arg,
1665 uint32_t evt)
1666 {
1667 struct lpfc_hba *phba = vport->phba;
1668 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1669 LPFC_MBOXQ_t *mb;
1670 LPFC_MBOXQ_t *nextmb;
1671 struct lpfc_dmabuf *mp;
1672 struct lpfc_nodelist *ns_ndlp;
1673
1674 cmdiocb = (struct lpfc_iocbq *) arg;
1675
1676 /* cleanup any ndlp on mbox q waiting for reglogin cmpl */
1677 if ((mb = phba->sli.mbox_active)) {
1678 if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) &&
1679 (ndlp == (struct lpfc_nodelist *)mb->ctx_ndlp)) {
1680 ndlp->nlp_flag &= ~NLP_REG_LOGIN_SEND;
1681 lpfc_nlp_put(ndlp);
1682 mb->ctx_ndlp = NULL;
1683 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
1684 }
1685 }
1686
1687 spin_lock_irq(&phba->hbalock);
1688 list_for_each_entry_safe(mb, nextmb, &phba->sli.mboxq, list) {
1689 if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) &&
1690 (ndlp == (struct lpfc_nodelist *)mb->ctx_ndlp)) {
1691 mp = (struct lpfc_dmabuf *)(mb->ctx_buf);
1692 if (mp) {
1693 __lpfc_mbuf_free(phba, mp->virt, mp->phys);
1694 kfree(mp);
1695 }
1696 ndlp->nlp_flag &= ~NLP_REG_LOGIN_SEND;
1697 lpfc_nlp_put(ndlp);
1698 list_del(&mb->list);
1699 phba->sli.mboxq_cnt--;
1700 mempool_free(mb, phba->mbox_mem_pool);
1701 }
1702 }
1703 spin_unlock_irq(&phba->hbalock);
1704
1705 /* software abort if any GID_FT is outstanding */
1706 if (vport->cfg_enable_fc4_type != LPFC_ENABLE_FCP) {
1707 ns_ndlp = lpfc_findnode_did(vport, NameServer_DID);
1708 if (ns_ndlp && NLP_CHK_NODE_ACT(ns_ndlp))
1709 lpfc_els_abort(phba, ns_ndlp);
1710 }
1711
1712 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1713 return ndlp->nlp_state;
1714 }
1715
1716 static uint32_t
lpfc_rcv_padisc_reglogin_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1717 lpfc_rcv_padisc_reglogin_issue(struct lpfc_vport *vport,
1718 struct lpfc_nodelist *ndlp,
1719 void *arg,
1720 uint32_t evt)
1721 {
1722 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1723
1724 lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1725 return ndlp->nlp_state;
1726 }
1727
1728 static uint32_t
lpfc_rcv_prlo_reglogin_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1729 lpfc_rcv_prlo_reglogin_issue(struct lpfc_vport *vport,
1730 struct lpfc_nodelist *ndlp,
1731 void *arg,
1732 uint32_t evt)
1733 {
1734 struct lpfc_iocbq *cmdiocb;
1735
1736 cmdiocb = (struct lpfc_iocbq *) arg;
1737 lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
1738 return ndlp->nlp_state;
1739 }
1740
1741 static uint32_t
lpfc_cmpl_reglogin_reglogin_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1742 lpfc_cmpl_reglogin_reglogin_issue(struct lpfc_vport *vport,
1743 struct lpfc_nodelist *ndlp,
1744 void *arg,
1745 uint32_t evt)
1746 {
1747 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1748 struct lpfc_hba *phba = vport->phba;
1749 LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg;
1750 MAILBOX_t *mb = &pmb->u.mb;
1751 uint32_t did = mb->un.varWords[1];
1752
1753 if (mb->mbxStatus) {
1754 /* RegLogin failed */
1755 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
1756 "0246 RegLogin failed Data: x%x x%x x%x x%x "
1757 "x%x\n",
1758 did, mb->mbxStatus, vport->port_state,
1759 mb->un.varRegLogin.vpi,
1760 mb->un.varRegLogin.rpi);
1761 /*
1762 * If RegLogin failed due to lack of HBA resources do not
1763 * retry discovery.
1764 */
1765 if (mb->mbxStatus == MBXERR_RPI_FULL) {
1766 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1767 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1768 return ndlp->nlp_state;
1769 }
1770
1771 /* Put ndlp in npr state set plogi timer for 1 sec */
1772 mod_timer(&ndlp->nlp_delayfunc,
1773 jiffies + msecs_to_jiffies(1000 * 1));
1774 spin_lock_irq(shost->host_lock);
1775 ndlp->nlp_flag |= NLP_DELAY_TMO;
1776 spin_unlock_irq(shost->host_lock);
1777 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
1778
1779 lpfc_issue_els_logo(vport, ndlp, 0);
1780 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1781 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1782 return ndlp->nlp_state;
1783 }
1784
1785 /* SLI4 ports have preallocated logical rpis. */
1786 if (phba->sli_rev < LPFC_SLI_REV4)
1787 ndlp->nlp_rpi = mb->un.varWords[0];
1788
1789 ndlp->nlp_flag |= NLP_RPI_REGISTERED;
1790
1791 /* Only if we are not a fabric nport do we issue PRLI */
1792 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
1793 "3066 RegLogin Complete on x%x x%x x%x\n",
1794 did, ndlp->nlp_type, ndlp->nlp_fc4_type);
1795 if (!(ndlp->nlp_type & NLP_FABRIC) &&
1796 (phba->nvmet_support == 0)) {
1797 /* The driver supports FCP and NVME concurrently. If the
1798 * ndlp's nlp_fc4_type is still zero, the driver doesn't
1799 * know what PRLI to send yet. Figure that out now and
1800 * call PRLI depending on the outcome.
1801 */
1802 if (vport->fc_flag & FC_PT2PT) {
1803 /* If we are pt2pt, there is no Fabric to determine
1804 * the FC4 type of the remote nport. So if NVME
1805 * is configured try it.
1806 */
1807 ndlp->nlp_fc4_type |= NLP_FC4_FCP;
1808 if ((vport->cfg_enable_fc4_type == LPFC_ENABLE_BOTH) ||
1809 (vport->cfg_enable_fc4_type == LPFC_ENABLE_NVME)) {
1810 ndlp->nlp_fc4_type |= NLP_FC4_NVME;
1811 /* We need to update the localport also */
1812 lpfc_nvme_update_localport(vport);
1813 }
1814
1815 } else if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
1816 ndlp->nlp_fc4_type |= NLP_FC4_FCP;
1817
1818 } else if (ndlp->nlp_fc4_type == 0) {
1819 /* If we are only configured for FCP, the driver
1820 * should just issue PRLI for FCP. Otherwise issue
1821 * GFT_ID to determine if remote port supports NVME.
1822 */
1823 if (vport->cfg_enable_fc4_type != LPFC_ENABLE_FCP) {
1824 lpfc_ns_cmd(vport, SLI_CTNS_GFT_ID, 0,
1825 ndlp->nlp_DID);
1826 return ndlp->nlp_state;
1827 }
1828 ndlp->nlp_fc4_type = NLP_FC4_FCP;
1829 }
1830
1831 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1832 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PRLI_ISSUE);
1833 if (lpfc_issue_els_prli(vport, ndlp, 0)) {
1834 lpfc_issue_els_logo(vport, ndlp, 0);
1835 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1836 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1837 }
1838 } else {
1839 if ((vport->fc_flag & FC_PT2PT) && phba->nvmet_support)
1840 phba->targetport->port_id = vport->fc_myDID;
1841
1842 /* Only Fabric ports should transition. NVME target
1843 * must complete PRLI.
1844 */
1845 if (ndlp->nlp_type & NLP_FABRIC) {
1846 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1847 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1848 }
1849 }
1850 return ndlp->nlp_state;
1851 }
1852
1853 static uint32_t
lpfc_device_rm_reglogin_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1854 lpfc_device_rm_reglogin_issue(struct lpfc_vport *vport,
1855 struct lpfc_nodelist *ndlp,
1856 void *arg,
1857 uint32_t evt)
1858 {
1859 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1860
1861 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1862 spin_lock_irq(shost->host_lock);
1863 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1864 spin_unlock_irq(shost->host_lock);
1865 return ndlp->nlp_state;
1866 } else {
1867 lpfc_drop_node(vport, ndlp);
1868 return NLP_STE_FREED_NODE;
1869 }
1870 }
1871
1872 static uint32_t
lpfc_device_recov_reglogin_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1873 lpfc_device_recov_reglogin_issue(struct lpfc_vport *vport,
1874 struct lpfc_nodelist *ndlp,
1875 void *arg,
1876 uint32_t evt)
1877 {
1878 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1879
1880 /* Don't do anything that will mess up processing of the
1881 * previous RSCN.
1882 */
1883 if (vport->fc_flag & FC_RSCN_DEFERRED)
1884 return ndlp->nlp_state;
1885
1886 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1887 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1888 spin_lock_irq(shost->host_lock);
1889
1890 /* If we are a target we won't immediately transition into PRLI,
1891 * so if REG_LOGIN already completed we don't need to ignore it.
1892 */
1893 if (!(ndlp->nlp_flag & NLP_RPI_REGISTERED) ||
1894 !vport->phba->nvmet_support)
1895 ndlp->nlp_flag |= NLP_IGNR_REG_CMPL;
1896
1897 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1898 spin_unlock_irq(shost->host_lock);
1899 lpfc_disc_set_adisc(vport, ndlp);
1900 return ndlp->nlp_state;
1901 }
1902
1903 static uint32_t
lpfc_rcv_plogi_prli_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1904 lpfc_rcv_plogi_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1905 void *arg, uint32_t evt)
1906 {
1907 struct lpfc_iocbq *cmdiocb;
1908
1909 cmdiocb = (struct lpfc_iocbq *) arg;
1910
1911 lpfc_rcv_plogi(vport, ndlp, cmdiocb);
1912 return ndlp->nlp_state;
1913 }
1914
1915 static uint32_t
lpfc_rcv_prli_prli_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1916 lpfc_rcv_prli_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1917 void *arg, uint32_t evt)
1918 {
1919 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1920
1921 if (!lpfc_rcv_prli_support_check(vport, ndlp, cmdiocb))
1922 return ndlp->nlp_state;
1923 lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1924 return ndlp->nlp_state;
1925 }
1926
1927 static uint32_t
lpfc_rcv_logo_prli_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1928 lpfc_rcv_logo_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1929 void *arg, uint32_t evt)
1930 {
1931 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1932
1933 /* Software abort outstanding PRLI before sending acc */
1934 lpfc_els_abort(vport->phba, ndlp);
1935
1936 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1937 return ndlp->nlp_state;
1938 }
1939
1940 static uint32_t
lpfc_rcv_padisc_prli_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1941 lpfc_rcv_padisc_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1942 void *arg, uint32_t evt)
1943 {
1944 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1945
1946 lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1947 return ndlp->nlp_state;
1948 }
1949
1950 /* This routine is envoked when we rcv a PRLO request from a nport
1951 * we are logged into. We should send back a PRLO rsp setting the
1952 * appropriate bits.
1953 * NEXT STATE = PRLI_ISSUE
1954 */
1955 static uint32_t
lpfc_rcv_prlo_prli_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1956 lpfc_rcv_prlo_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1957 void *arg, uint32_t evt)
1958 {
1959 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1960
1961 lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
1962 return ndlp->nlp_state;
1963 }
1964
1965 static uint32_t
lpfc_cmpl_prli_prli_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1966 lpfc_cmpl_prli_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1967 void *arg, uint32_t evt)
1968 {
1969 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1970 struct lpfc_iocbq *cmdiocb, *rspiocb;
1971 struct lpfc_hba *phba = vport->phba;
1972 IOCB_t *irsp;
1973 PRLI *npr;
1974 struct lpfc_nvme_prli *nvpr;
1975 void *temp_ptr;
1976
1977 cmdiocb = (struct lpfc_iocbq *) arg;
1978 rspiocb = cmdiocb->context_un.rsp_iocb;
1979
1980 /* A solicited PRLI is either FCP or NVME. The PRLI cmd/rsp
1981 * format is different so NULL the two PRLI types so that the
1982 * driver correctly gets the correct context.
1983 */
1984 npr = NULL;
1985 nvpr = NULL;
1986 temp_ptr = lpfc_check_elscmpl_iocb(phba, cmdiocb, rspiocb);
1987 if (cmdiocb->iocb_flag & LPFC_PRLI_FCP_REQ)
1988 npr = (PRLI *) temp_ptr;
1989 else if (cmdiocb->iocb_flag & LPFC_PRLI_NVME_REQ)
1990 nvpr = (struct lpfc_nvme_prli *) temp_ptr;
1991
1992 irsp = &rspiocb->iocb;
1993 if (irsp->ulpStatus) {
1994 if ((vport->port_type == LPFC_NPIV_PORT) &&
1995 vport->cfg_restrict_login) {
1996 goto out;
1997 }
1998
1999 /* Adjust the nlp_type accordingly if the PRLI failed */
2000 if (npr)
2001 ndlp->nlp_fc4_type &= ~NLP_FC4_FCP;
2002 if (nvpr)
2003 ndlp->nlp_fc4_type &= ~NLP_FC4_NVME;
2004
2005 /* We can't set the DSM state till BOTH PRLIs complete */
2006 goto out_err;
2007 }
2008
2009 if (npr && (npr->acceptRspCode == PRLI_REQ_EXECUTED) &&
2010 (npr->prliType == PRLI_FCP_TYPE)) {
2011 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_DISC,
2012 "6028 FCP NPR PRLI Cmpl Init %d Target %d\n",
2013 npr->initiatorFunc,
2014 npr->targetFunc);
2015 if (npr->initiatorFunc)
2016 ndlp->nlp_type |= NLP_FCP_INITIATOR;
2017 if (npr->targetFunc) {
2018 ndlp->nlp_type |= NLP_FCP_TARGET;
2019 if (npr->writeXferRdyDis)
2020 ndlp->nlp_flag |= NLP_FIRSTBURST;
2021 }
2022 if (npr->Retry)
2023 ndlp->nlp_fcp_info |= NLP_FCP_2_DEVICE;
2024
2025 } else if (nvpr &&
2026 (bf_get_be32(prli_acc_rsp_code, nvpr) ==
2027 PRLI_REQ_EXECUTED) &&
2028 (bf_get_be32(prli_type_code, nvpr) ==
2029 PRLI_NVME_TYPE)) {
2030
2031 /* Complete setting up the remote ndlp personality. */
2032 if (bf_get_be32(prli_init, nvpr))
2033 ndlp->nlp_type |= NLP_NVME_INITIATOR;
2034
2035 if (phba->nsler && bf_get_be32(prli_nsler, nvpr))
2036 ndlp->nlp_nvme_info |= NLP_NVME_NSLER;
2037 else
2038 ndlp->nlp_nvme_info &= ~NLP_NVME_NSLER;
2039
2040 /* Target driver cannot solicit NVME FB. */
2041 if (bf_get_be32(prli_tgt, nvpr)) {
2042 /* Complete the nvme target roles. The transport
2043 * needs to know if the rport is capable of
2044 * discovery in addition to its role.
2045 */
2046 ndlp->nlp_type |= NLP_NVME_TARGET;
2047 if (bf_get_be32(prli_disc, nvpr))
2048 ndlp->nlp_type |= NLP_NVME_DISCOVERY;
2049
2050 /*
2051 * If prli_fba is set, the Target supports FirstBurst.
2052 * If prli_fb_sz is 0, the FirstBurst size is unlimited,
2053 * otherwise it defines the actual size supported by
2054 * the NVME Target.
2055 */
2056 if ((bf_get_be32(prli_fba, nvpr) == 1) &&
2057 (phba->cfg_nvme_enable_fb) &&
2058 (!phba->nvmet_support)) {
2059 /* Both sides support FB. The target's first
2060 * burst size is a 512 byte encoded value.
2061 */
2062 ndlp->nlp_flag |= NLP_FIRSTBURST;
2063 ndlp->nvme_fb_size = bf_get_be32(prli_fb_sz,
2064 nvpr);
2065
2066 /* Expressed in units of 512 bytes */
2067 if (ndlp->nvme_fb_size)
2068 ndlp->nvme_fb_size <<=
2069 LPFC_NVME_FB_SHIFT;
2070 else
2071 ndlp->nvme_fb_size = LPFC_NVME_MAX_FB;
2072 }
2073 }
2074
2075 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_DISC,
2076 "6029 NVME PRLI Cmpl w1 x%08x "
2077 "w4 x%08x w5 x%08x flag x%x, "
2078 "fcp_info x%x nlp_type x%x\n",
2079 be32_to_cpu(nvpr->word1),
2080 be32_to_cpu(nvpr->word4),
2081 be32_to_cpu(nvpr->word5),
2082 ndlp->nlp_flag, ndlp->nlp_fcp_info,
2083 ndlp->nlp_type);
2084 }
2085 if (!(ndlp->nlp_type & NLP_FCP_TARGET) &&
2086 (vport->port_type == LPFC_NPIV_PORT) &&
2087 vport->cfg_restrict_login) {
2088 out:
2089 spin_lock_irq(shost->host_lock);
2090 ndlp->nlp_flag |= NLP_TARGET_REMOVE;
2091 spin_unlock_irq(shost->host_lock);
2092 lpfc_issue_els_logo(vport, ndlp, 0);
2093
2094 ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
2095 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
2096 return ndlp->nlp_state;
2097 }
2098
2099 out_err:
2100 /* The ndlp state cannot move to MAPPED or UNMAPPED before all PRLIs
2101 * are complete.
2102 */
2103 if (ndlp->fc4_prli_sent == 0) {
2104 ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
2105 if (ndlp->nlp_type & (NLP_FCP_TARGET | NLP_NVME_TARGET))
2106 lpfc_nlp_set_state(vport, ndlp, NLP_STE_MAPPED_NODE);
2107 else if (ndlp->nlp_type &
2108 (NLP_FCP_INITIATOR | NLP_NVME_INITIATOR))
2109 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
2110 } else
2111 lpfc_printf_vlog(vport,
2112 KERN_INFO, LOG_ELS,
2113 "3067 PRLI's still outstanding "
2114 "on x%06x - count %d, Pend Node Mode "
2115 "transition...\n",
2116 ndlp->nlp_DID, ndlp->fc4_prli_sent);
2117
2118 return ndlp->nlp_state;
2119 }
2120
2121 /*! lpfc_device_rm_prli_issue
2122 *
2123 * \pre
2124 * \post
2125 * \param phba
2126 * \param ndlp
2127 * \param arg
2128 * \param evt
2129 * \return uint32_t
2130 *
2131 * \b Description:
2132 * This routine is envoked when we a request to remove a nport we are in the
2133 * process of PRLIing. We should software abort outstanding prli, unreg
2134 * login, send a logout. We will change node state to UNUSED_NODE, put it
2135 * on plogi list so it can be freed when LOGO completes.
2136 *
2137 */
2138
2139 static uint32_t
lpfc_device_rm_prli_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2140 lpfc_device_rm_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2141 void *arg, uint32_t evt)
2142 {
2143 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2144
2145 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
2146 spin_lock_irq(shost->host_lock);
2147 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
2148 spin_unlock_irq(shost->host_lock);
2149 return ndlp->nlp_state;
2150 } else {
2151 /* software abort outstanding PLOGI */
2152 lpfc_els_abort(vport->phba, ndlp);
2153
2154 lpfc_drop_node(vport, ndlp);
2155 return NLP_STE_FREED_NODE;
2156 }
2157 }
2158
2159
2160 /*! lpfc_device_recov_prli_issue
2161 *
2162 * \pre
2163 * \post
2164 * \param phba
2165 * \param ndlp
2166 * \param arg
2167 * \param evt
2168 * \return uint32_t
2169 *
2170 * \b Description:
2171 * The routine is envoked when the state of a device is unknown, like
2172 * during a link down. We should remove the nodelist entry from the
2173 * unmapped list, issue a UNREG_LOGIN, do a software abort of the
2174 * outstanding PRLI command, then free the node entry.
2175 */
2176 static uint32_t
lpfc_device_recov_prli_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2177 lpfc_device_recov_prli_issue(struct lpfc_vport *vport,
2178 struct lpfc_nodelist *ndlp,
2179 void *arg,
2180 uint32_t evt)
2181 {
2182 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2183 struct lpfc_hba *phba = vport->phba;
2184
2185 /* Don't do anything that will mess up processing of the
2186 * previous RSCN.
2187 */
2188 if (vport->fc_flag & FC_RSCN_DEFERRED)
2189 return ndlp->nlp_state;
2190
2191 /* software abort outstanding PRLI */
2192 lpfc_els_abort(phba, ndlp);
2193
2194 ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
2195 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
2196 spin_lock_irq(shost->host_lock);
2197 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
2198 spin_unlock_irq(shost->host_lock);
2199 lpfc_disc_set_adisc(vport, ndlp);
2200 return ndlp->nlp_state;
2201 }
2202
2203 static uint32_t
lpfc_rcv_plogi_logo_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2204 lpfc_rcv_plogi_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2205 void *arg, uint32_t evt)
2206 {
2207 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *)arg;
2208 struct ls_rjt stat;
2209
2210 memset(&stat, 0, sizeof(struct ls_rjt));
2211 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
2212 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
2213 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
2214 return ndlp->nlp_state;
2215 }
2216
2217 static uint32_t
lpfc_rcv_prli_logo_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2218 lpfc_rcv_prli_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2219 void *arg, uint32_t evt)
2220 {
2221 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *)arg;
2222 struct ls_rjt stat;
2223
2224 memset(&stat, 0, sizeof(struct ls_rjt));
2225 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
2226 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
2227 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
2228 return ndlp->nlp_state;
2229 }
2230
2231 static uint32_t
lpfc_rcv_logo_logo_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2232 lpfc_rcv_logo_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2233 void *arg, uint32_t evt)
2234 {
2235 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2236 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *)arg;
2237
2238 spin_lock_irq(shost->host_lock);
2239 ndlp->nlp_flag |= NLP_LOGO_ACC;
2240 spin_unlock_irq(shost->host_lock);
2241 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
2242 return ndlp->nlp_state;
2243 }
2244
2245 static uint32_t
lpfc_rcv_padisc_logo_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2246 lpfc_rcv_padisc_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2247 void *arg, uint32_t evt)
2248 {
2249 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *)arg;
2250 struct ls_rjt stat;
2251
2252 memset(&stat, 0, sizeof(struct ls_rjt));
2253 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
2254 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
2255 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
2256 return ndlp->nlp_state;
2257 }
2258
2259 static uint32_t
lpfc_rcv_prlo_logo_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2260 lpfc_rcv_prlo_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2261 void *arg, uint32_t evt)
2262 {
2263 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *)arg;
2264 struct ls_rjt stat;
2265
2266 memset(&stat, 0, sizeof(struct ls_rjt));
2267 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
2268 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
2269 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
2270 return ndlp->nlp_state;
2271 }
2272
2273 static uint32_t
lpfc_cmpl_logo_logo_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2274 lpfc_cmpl_logo_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2275 void *arg, uint32_t evt)
2276 {
2277 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2278
2279 ndlp->nlp_prev_state = NLP_STE_LOGO_ISSUE;
2280 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
2281 spin_lock_irq(shost->host_lock);
2282 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
2283 spin_unlock_irq(shost->host_lock);
2284 lpfc_disc_set_adisc(vport, ndlp);
2285 return ndlp->nlp_state;
2286 }
2287
2288 static uint32_t
lpfc_device_rm_logo_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2289 lpfc_device_rm_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2290 void *arg, uint32_t evt)
2291 {
2292 /*
2293 * DevLoss has timed out and is calling for Device Remove.
2294 * In this case, abort the LOGO and cleanup the ndlp
2295 */
2296
2297 lpfc_unreg_rpi(vport, ndlp);
2298 /* software abort outstanding PLOGI */
2299 lpfc_els_abort(vport->phba, ndlp);
2300 lpfc_drop_node(vport, ndlp);
2301 return NLP_STE_FREED_NODE;
2302 }
2303
2304 static uint32_t
lpfc_device_recov_logo_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2305 lpfc_device_recov_logo_issue(struct lpfc_vport *vport,
2306 struct lpfc_nodelist *ndlp,
2307 void *arg, uint32_t evt)
2308 {
2309 /*
2310 * Device Recovery events have no meaning for a node with a LOGO
2311 * outstanding. The LOGO has to complete first and handle the
2312 * node from that point.
2313 */
2314 return ndlp->nlp_state;
2315 }
2316
2317 static uint32_t
lpfc_rcv_plogi_unmap_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2318 lpfc_rcv_plogi_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2319 void *arg, uint32_t evt)
2320 {
2321 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2322
2323 lpfc_rcv_plogi(vport, ndlp, cmdiocb);
2324 return ndlp->nlp_state;
2325 }
2326
2327 static uint32_t
lpfc_rcv_prli_unmap_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2328 lpfc_rcv_prli_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2329 void *arg, uint32_t evt)
2330 {
2331 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2332
2333 if (!lpfc_rcv_prli_support_check(vport, ndlp, cmdiocb))
2334 return ndlp->nlp_state;
2335
2336 lpfc_rcv_prli(vport, ndlp, cmdiocb);
2337 lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
2338 return ndlp->nlp_state;
2339 }
2340
2341 static uint32_t
lpfc_rcv_logo_unmap_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2342 lpfc_rcv_logo_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2343 void *arg, uint32_t evt)
2344 {
2345 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2346
2347 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
2348 return ndlp->nlp_state;
2349 }
2350
2351 static uint32_t
lpfc_rcv_padisc_unmap_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2352 lpfc_rcv_padisc_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2353 void *arg, uint32_t evt)
2354 {
2355 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2356
2357 lpfc_rcv_padisc(vport, ndlp, cmdiocb);
2358 return ndlp->nlp_state;
2359 }
2360
2361 static uint32_t
lpfc_rcv_prlo_unmap_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2362 lpfc_rcv_prlo_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2363 void *arg, uint32_t evt)
2364 {
2365 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2366
2367 lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
2368 return ndlp->nlp_state;
2369 }
2370
2371 static uint32_t
lpfc_device_recov_unmap_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2372 lpfc_device_recov_unmap_node(struct lpfc_vport *vport,
2373 struct lpfc_nodelist *ndlp,
2374 void *arg,
2375 uint32_t evt)
2376 {
2377 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2378
2379 ndlp->nlp_prev_state = NLP_STE_UNMAPPED_NODE;
2380 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
2381 spin_lock_irq(shost->host_lock);
2382 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
2383 ndlp->nlp_fc4_type &= ~(NLP_FC4_FCP | NLP_FC4_NVME);
2384 spin_unlock_irq(shost->host_lock);
2385 lpfc_disc_set_adisc(vport, ndlp);
2386
2387 return ndlp->nlp_state;
2388 }
2389
2390 static uint32_t
lpfc_rcv_plogi_mapped_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2391 lpfc_rcv_plogi_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2392 void *arg, uint32_t evt)
2393 {
2394 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2395
2396 lpfc_rcv_plogi(vport, ndlp, cmdiocb);
2397 return ndlp->nlp_state;
2398 }
2399
2400 static uint32_t
lpfc_rcv_prli_mapped_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2401 lpfc_rcv_prli_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2402 void *arg, uint32_t evt)
2403 {
2404 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2405
2406 if (!lpfc_rcv_prli_support_check(vport, ndlp, cmdiocb))
2407 return ndlp->nlp_state;
2408 lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
2409 return ndlp->nlp_state;
2410 }
2411
2412 static uint32_t
lpfc_rcv_logo_mapped_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2413 lpfc_rcv_logo_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2414 void *arg, uint32_t evt)
2415 {
2416 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2417
2418 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
2419 return ndlp->nlp_state;
2420 }
2421
2422 static uint32_t
lpfc_rcv_padisc_mapped_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2423 lpfc_rcv_padisc_mapped_node(struct lpfc_vport *vport,
2424 struct lpfc_nodelist *ndlp,
2425 void *arg, uint32_t evt)
2426 {
2427 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2428
2429 lpfc_rcv_padisc(vport, ndlp, cmdiocb);
2430 return ndlp->nlp_state;
2431 }
2432
2433 static uint32_t
lpfc_rcv_prlo_mapped_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2434 lpfc_rcv_prlo_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2435 void *arg, uint32_t evt)
2436 {
2437 struct lpfc_hba *phba = vport->phba;
2438 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2439
2440 /* flush the target */
2441 lpfc_sli_abort_iocb(vport, &phba->sli.sli3_ring[LPFC_FCP_RING],
2442 ndlp->nlp_sid, 0, LPFC_CTX_TGT);
2443
2444 /* Treat like rcv logo */
2445 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_PRLO);
2446 return ndlp->nlp_state;
2447 }
2448
2449 static uint32_t
lpfc_device_recov_mapped_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2450 lpfc_device_recov_mapped_node(struct lpfc_vport *vport,
2451 struct lpfc_nodelist *ndlp,
2452 void *arg,
2453 uint32_t evt)
2454 {
2455 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2456
2457 ndlp->nlp_prev_state = NLP_STE_MAPPED_NODE;
2458 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
2459 spin_lock_irq(shost->host_lock);
2460 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
2461 ndlp->nlp_fc4_type &= ~(NLP_FC4_FCP | NLP_FC4_NVME);
2462 spin_unlock_irq(shost->host_lock);
2463 lpfc_disc_set_adisc(vport, ndlp);
2464 return ndlp->nlp_state;
2465 }
2466
2467 static uint32_t
lpfc_rcv_plogi_npr_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2468 lpfc_rcv_plogi_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2469 void *arg, uint32_t evt)
2470 {
2471 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2472 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2473
2474 /* Ignore PLOGI if we have an outstanding LOGO */
2475 if (ndlp->nlp_flag & (NLP_LOGO_SND | NLP_LOGO_ACC))
2476 return ndlp->nlp_state;
2477 if (lpfc_rcv_plogi(vport, ndlp, cmdiocb)) {
2478 lpfc_cancel_retry_delay_tmo(vport, ndlp);
2479 spin_lock_irq(shost->host_lock);
2480 ndlp->nlp_flag &= ~(NLP_NPR_ADISC | NLP_NPR_2B_DISC);
2481 spin_unlock_irq(shost->host_lock);
2482 } else if (!(ndlp->nlp_flag & NLP_NPR_2B_DISC)) {
2483 /* send PLOGI immediately, move to PLOGI issue state */
2484 if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) {
2485 ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
2486 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
2487 lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
2488 }
2489 }
2490 return ndlp->nlp_state;
2491 }
2492
2493 static uint32_t
lpfc_rcv_prli_npr_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2494 lpfc_rcv_prli_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2495 void *arg, uint32_t evt)
2496 {
2497 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2498 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2499 struct ls_rjt stat;
2500
2501 memset(&stat, 0, sizeof (struct ls_rjt));
2502 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
2503 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
2504 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
2505
2506 if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) {
2507 if (ndlp->nlp_flag & NLP_NPR_ADISC) {
2508 spin_lock_irq(shost->host_lock);
2509 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
2510 ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
2511 spin_unlock_irq(shost->host_lock);
2512 lpfc_nlp_set_state(vport, ndlp, NLP_STE_ADISC_ISSUE);
2513 lpfc_issue_els_adisc(vport, ndlp, 0);
2514 } else {
2515 ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
2516 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
2517 lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
2518 }
2519 }
2520 return ndlp->nlp_state;
2521 }
2522
2523 static uint32_t
lpfc_rcv_logo_npr_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2524 lpfc_rcv_logo_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2525 void *arg, uint32_t evt)
2526 {
2527 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2528
2529 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
2530 return ndlp->nlp_state;
2531 }
2532
2533 static uint32_t
lpfc_rcv_padisc_npr_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2534 lpfc_rcv_padisc_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2535 void *arg, uint32_t evt)
2536 {
2537 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2538
2539 lpfc_rcv_padisc(vport, ndlp, cmdiocb);
2540 /*
2541 * Do not start discovery if discovery is about to start
2542 * or discovery in progress for this node. Starting discovery
2543 * here will affect the counting of discovery threads.
2544 */
2545 if (!(ndlp->nlp_flag & NLP_DELAY_TMO) &&
2546 !(ndlp->nlp_flag & NLP_NPR_2B_DISC)) {
2547 if (ndlp->nlp_flag & NLP_NPR_ADISC) {
2548 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
2549 ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
2550 lpfc_nlp_set_state(vport, ndlp, NLP_STE_ADISC_ISSUE);
2551 lpfc_issue_els_adisc(vport, ndlp, 0);
2552 } else {
2553 ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
2554 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
2555 lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
2556 }
2557 }
2558 return ndlp->nlp_state;
2559 }
2560
2561 static uint32_t
lpfc_rcv_prlo_npr_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2562 lpfc_rcv_prlo_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2563 void *arg, uint32_t evt)
2564 {
2565 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2566 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2567
2568 spin_lock_irq(shost->host_lock);
2569 ndlp->nlp_flag |= NLP_LOGO_ACC;
2570 spin_unlock_irq(shost->host_lock);
2571
2572 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
2573
2574 if ((ndlp->nlp_flag & NLP_DELAY_TMO) == 0) {
2575 mod_timer(&ndlp->nlp_delayfunc,
2576 jiffies + msecs_to_jiffies(1000 * 1));
2577 spin_lock_irq(shost->host_lock);
2578 ndlp->nlp_flag |= NLP_DELAY_TMO;
2579 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
2580 spin_unlock_irq(shost->host_lock);
2581 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
2582 } else {
2583 spin_lock_irq(shost->host_lock);
2584 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
2585 spin_unlock_irq(shost->host_lock);
2586 }
2587 return ndlp->nlp_state;
2588 }
2589
2590 static uint32_t
lpfc_cmpl_plogi_npr_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2591 lpfc_cmpl_plogi_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2592 void *arg, uint32_t evt)
2593 {
2594 struct lpfc_iocbq *cmdiocb, *rspiocb;
2595 IOCB_t *irsp;
2596 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2597
2598 cmdiocb = (struct lpfc_iocbq *) arg;
2599 rspiocb = cmdiocb->context_un.rsp_iocb;
2600
2601 irsp = &rspiocb->iocb;
2602 if (irsp->ulpStatus) {
2603 spin_lock_irq(shost->host_lock);
2604 ndlp->nlp_flag |= NLP_DEFER_RM;
2605 spin_unlock_irq(shost->host_lock);
2606 return NLP_STE_FREED_NODE;
2607 }
2608 return ndlp->nlp_state;
2609 }
2610
2611 static uint32_t
lpfc_cmpl_prli_npr_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2612 lpfc_cmpl_prli_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2613 void *arg, uint32_t evt)
2614 {
2615 struct lpfc_iocbq *cmdiocb, *rspiocb;
2616 IOCB_t *irsp;
2617
2618 cmdiocb = (struct lpfc_iocbq *) arg;
2619 rspiocb = cmdiocb->context_un.rsp_iocb;
2620
2621 irsp = &rspiocb->iocb;
2622 if (irsp->ulpStatus && (ndlp->nlp_flag & NLP_NODEV_REMOVE)) {
2623 lpfc_drop_node(vport, ndlp);
2624 return NLP_STE_FREED_NODE;
2625 }
2626 return ndlp->nlp_state;
2627 }
2628
2629 static uint32_t
lpfc_cmpl_logo_npr_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2630 lpfc_cmpl_logo_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2631 void *arg, uint32_t evt)
2632 {
2633 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2634
2635 /* For the fabric port just clear the fc flags. */
2636 if (ndlp->nlp_DID == Fabric_DID) {
2637 spin_lock_irq(shost->host_lock);
2638 vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP);
2639 spin_unlock_irq(shost->host_lock);
2640 }
2641 lpfc_unreg_rpi(vport, ndlp);
2642 return ndlp->nlp_state;
2643 }
2644
2645 static uint32_t
lpfc_cmpl_adisc_npr_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2646 lpfc_cmpl_adisc_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2647 void *arg, uint32_t evt)
2648 {
2649 struct lpfc_iocbq *cmdiocb, *rspiocb;
2650 IOCB_t *irsp;
2651
2652 cmdiocb = (struct lpfc_iocbq *) arg;
2653 rspiocb = cmdiocb->context_un.rsp_iocb;
2654
2655 irsp = &rspiocb->iocb;
2656 if (irsp->ulpStatus && (ndlp->nlp_flag & NLP_NODEV_REMOVE)) {
2657 lpfc_drop_node(vport, ndlp);
2658 return NLP_STE_FREED_NODE;
2659 }
2660 return ndlp->nlp_state;
2661 }
2662
2663 static uint32_t
lpfc_cmpl_reglogin_npr_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2664 lpfc_cmpl_reglogin_npr_node(struct lpfc_vport *vport,
2665 struct lpfc_nodelist *ndlp,
2666 void *arg, uint32_t evt)
2667 {
2668 LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg;
2669 MAILBOX_t *mb = &pmb->u.mb;
2670
2671 if (!mb->mbxStatus) {
2672 /* SLI4 ports have preallocated logical rpis. */
2673 if (vport->phba->sli_rev < LPFC_SLI_REV4)
2674 ndlp->nlp_rpi = mb->un.varWords[0];
2675 ndlp->nlp_flag |= NLP_RPI_REGISTERED;
2676 if (ndlp->nlp_flag & NLP_LOGO_ACC) {
2677 lpfc_unreg_rpi(vport, ndlp);
2678 }
2679 } else {
2680 if (ndlp->nlp_flag & NLP_NODEV_REMOVE) {
2681 lpfc_drop_node(vport, ndlp);
2682 return NLP_STE_FREED_NODE;
2683 }
2684 }
2685 return ndlp->nlp_state;
2686 }
2687
2688 static uint32_t
lpfc_device_rm_npr_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2689 lpfc_device_rm_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2690 void *arg, uint32_t evt)
2691 {
2692 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2693
2694 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
2695 spin_lock_irq(shost->host_lock);
2696 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
2697 spin_unlock_irq(shost->host_lock);
2698 return ndlp->nlp_state;
2699 }
2700 lpfc_drop_node(vport, ndlp);
2701 return NLP_STE_FREED_NODE;
2702 }
2703
2704 static uint32_t
lpfc_device_recov_npr_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2705 lpfc_device_recov_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2706 void *arg, uint32_t evt)
2707 {
2708 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2709
2710 /* Don't do anything that will mess up processing of the
2711 * previous RSCN.
2712 */
2713 if (vport->fc_flag & FC_RSCN_DEFERRED)
2714 return ndlp->nlp_state;
2715
2716 lpfc_cancel_retry_delay_tmo(vport, ndlp);
2717 spin_lock_irq(shost->host_lock);
2718 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
2719 ndlp->nlp_fc4_type &= ~(NLP_FC4_FCP | NLP_FC4_NVME);
2720 spin_unlock_irq(shost->host_lock);
2721 return ndlp->nlp_state;
2722 }
2723
2724
2725 /* This next section defines the NPort Discovery State Machine */
2726
2727 /* There are 4 different double linked lists nodelist entries can reside on.
2728 * The plogi list and adisc list are used when Link Up discovery or RSCN
2729 * processing is needed. Each list holds the nodes that we will send PLOGI
2730 * or ADISC on. These lists will keep track of what nodes will be effected
2731 * by an RSCN, or a Link Up (Typically, all nodes are effected on Link Up).
2732 * The unmapped_list will contain all nodes that we have successfully logged
2733 * into at the Fibre Channel level. The mapped_list will contain all nodes
2734 * that are mapped FCP targets.
2735 */
2736 /*
2737 * The bind list is a list of undiscovered (potentially non-existent) nodes
2738 * that we have saved binding information on. This information is used when
2739 * nodes transition from the unmapped to the mapped list.
2740 */
2741 /* For UNUSED_NODE state, the node has just been allocated .
2742 * For PLOGI_ISSUE and REG_LOGIN_ISSUE, the node is on
2743 * the PLOGI list. For REG_LOGIN_COMPL, the node is taken off the PLOGI list
2744 * and put on the unmapped list. For ADISC processing, the node is taken off
2745 * the ADISC list and placed on either the mapped or unmapped list (depending
2746 * on its previous state). Once on the unmapped list, a PRLI is issued and the
2747 * state changed to PRLI_ISSUE. When the PRLI completion occurs, the state is
2748 * changed to UNMAPPED_NODE. If the completion indicates a mapped
2749 * node, the node is taken off the unmapped list. The binding list is checked
2750 * for a valid binding, or a binding is automatically assigned. If binding
2751 * assignment is unsuccessful, the node is left on the unmapped list. If
2752 * binding assignment is successful, the associated binding list entry (if
2753 * any) is removed, and the node is placed on the mapped list.
2754 */
2755 /*
2756 * For a Link Down, all nodes on the ADISC, PLOGI, unmapped or mapped
2757 * lists will receive a DEVICE_RECOVERY event. If the linkdown or devloss timers
2758 * expire, all effected nodes will receive a DEVICE_RM event.
2759 */
2760 /*
2761 * For a Link Up or RSCN, all nodes will move from the mapped / unmapped lists
2762 * to either the ADISC or PLOGI list. After a Nameserver query or ALPA loopmap
2763 * check, additional nodes may be added or removed (via DEVICE_RM) to / from
2764 * the PLOGI or ADISC lists. Once the PLOGI and ADISC lists are populated,
2765 * we will first process the ADISC list. 32 entries are processed initially and
2766 * ADISC is initited for each one. Completions / Events for each node are
2767 * funnelled thru the state machine. As each node finishes ADISC processing, it
2768 * starts ADISC for any nodes waiting for ADISC processing. If no nodes are
2769 * waiting, and the ADISC list count is identically 0, then we are done. For
2770 * Link Up discovery, since all nodes on the PLOGI list are UNREG_LOGIN'ed, we
2771 * can issue a CLEAR_LA and reenable Link Events. Next we will process the PLOGI
2772 * list. 32 entries are processed initially and PLOGI is initited for each one.
2773 * Completions / Events for each node are funnelled thru the state machine. As
2774 * each node finishes PLOGI processing, it starts PLOGI for any nodes waiting
2775 * for PLOGI processing. If no nodes are waiting, and the PLOGI list count is
2776 * indentically 0, then we are done. We have now completed discovery / RSCN
2777 * handling. Upon completion, ALL nodes should be on either the mapped or
2778 * unmapped lists.
2779 */
2780
2781 static uint32_t (*lpfc_disc_action[NLP_STE_MAX_STATE * NLP_EVT_MAX_EVENT])
2782 (struct lpfc_vport *, struct lpfc_nodelist *, void *, uint32_t) = {
2783 /* Action routine Event Current State */
2784 lpfc_rcv_plogi_unused_node, /* RCV_PLOGI UNUSED_NODE */
2785 lpfc_rcv_els_unused_node, /* RCV_PRLI */
2786 lpfc_rcv_logo_unused_node, /* RCV_LOGO */
2787 lpfc_rcv_els_unused_node, /* RCV_ADISC */
2788 lpfc_rcv_els_unused_node, /* RCV_PDISC */
2789 lpfc_rcv_els_unused_node, /* RCV_PRLO */
2790 lpfc_disc_illegal, /* CMPL_PLOGI */
2791 lpfc_disc_illegal, /* CMPL_PRLI */
2792 lpfc_cmpl_logo_unused_node, /* CMPL_LOGO */
2793 lpfc_disc_illegal, /* CMPL_ADISC */
2794 lpfc_disc_illegal, /* CMPL_REG_LOGIN */
2795 lpfc_device_rm_unused_node, /* DEVICE_RM */
2796 lpfc_device_recov_unused_node, /* DEVICE_RECOVERY */
2797
2798 lpfc_rcv_plogi_plogi_issue, /* RCV_PLOGI PLOGI_ISSUE */
2799 lpfc_rcv_prli_plogi_issue, /* RCV_PRLI */
2800 lpfc_rcv_logo_plogi_issue, /* RCV_LOGO */
2801 lpfc_rcv_els_plogi_issue, /* RCV_ADISC */
2802 lpfc_rcv_els_plogi_issue, /* RCV_PDISC */
2803 lpfc_rcv_els_plogi_issue, /* RCV_PRLO */
2804 lpfc_cmpl_plogi_plogi_issue, /* CMPL_PLOGI */
2805 lpfc_disc_illegal, /* CMPL_PRLI */
2806 lpfc_cmpl_logo_plogi_issue, /* CMPL_LOGO */
2807 lpfc_disc_illegal, /* CMPL_ADISC */
2808 lpfc_cmpl_reglogin_plogi_issue,/* CMPL_REG_LOGIN */
2809 lpfc_device_rm_plogi_issue, /* DEVICE_RM */
2810 lpfc_device_recov_plogi_issue, /* DEVICE_RECOVERY */
2811
2812 lpfc_rcv_plogi_adisc_issue, /* RCV_PLOGI ADISC_ISSUE */
2813 lpfc_rcv_prli_adisc_issue, /* RCV_PRLI */
2814 lpfc_rcv_logo_adisc_issue, /* RCV_LOGO */
2815 lpfc_rcv_padisc_adisc_issue, /* RCV_ADISC */
2816 lpfc_rcv_padisc_adisc_issue, /* RCV_PDISC */
2817 lpfc_rcv_prlo_adisc_issue, /* RCV_PRLO */
2818 lpfc_disc_illegal, /* CMPL_PLOGI */
2819 lpfc_disc_illegal, /* CMPL_PRLI */
2820 lpfc_disc_illegal, /* CMPL_LOGO */
2821 lpfc_cmpl_adisc_adisc_issue, /* CMPL_ADISC */
2822 lpfc_disc_illegal, /* CMPL_REG_LOGIN */
2823 lpfc_device_rm_adisc_issue, /* DEVICE_RM */
2824 lpfc_device_recov_adisc_issue, /* DEVICE_RECOVERY */
2825
2826 lpfc_rcv_plogi_reglogin_issue, /* RCV_PLOGI REG_LOGIN_ISSUE */
2827 lpfc_rcv_prli_reglogin_issue, /* RCV_PLOGI */
2828 lpfc_rcv_logo_reglogin_issue, /* RCV_LOGO */
2829 lpfc_rcv_padisc_reglogin_issue, /* RCV_ADISC */
2830 lpfc_rcv_padisc_reglogin_issue, /* RCV_PDISC */
2831 lpfc_rcv_prlo_reglogin_issue, /* RCV_PRLO */
2832 lpfc_cmpl_plogi_illegal, /* CMPL_PLOGI */
2833 lpfc_disc_illegal, /* CMPL_PRLI */
2834 lpfc_disc_illegal, /* CMPL_LOGO */
2835 lpfc_disc_illegal, /* CMPL_ADISC */
2836 lpfc_cmpl_reglogin_reglogin_issue,/* CMPL_REG_LOGIN */
2837 lpfc_device_rm_reglogin_issue, /* DEVICE_RM */
2838 lpfc_device_recov_reglogin_issue,/* DEVICE_RECOVERY */
2839
2840 lpfc_rcv_plogi_prli_issue, /* RCV_PLOGI PRLI_ISSUE */
2841 lpfc_rcv_prli_prli_issue, /* RCV_PRLI */
2842 lpfc_rcv_logo_prli_issue, /* RCV_LOGO */
2843 lpfc_rcv_padisc_prli_issue, /* RCV_ADISC */
2844 lpfc_rcv_padisc_prli_issue, /* RCV_PDISC */
2845 lpfc_rcv_prlo_prli_issue, /* RCV_PRLO */
2846 lpfc_cmpl_plogi_illegal, /* CMPL_PLOGI */
2847 lpfc_cmpl_prli_prli_issue, /* CMPL_PRLI */
2848 lpfc_disc_illegal, /* CMPL_LOGO */
2849 lpfc_disc_illegal, /* CMPL_ADISC */
2850 lpfc_disc_illegal, /* CMPL_REG_LOGIN */
2851 lpfc_device_rm_prli_issue, /* DEVICE_RM */
2852 lpfc_device_recov_prli_issue, /* DEVICE_RECOVERY */
2853
2854 lpfc_rcv_plogi_logo_issue, /* RCV_PLOGI LOGO_ISSUE */
2855 lpfc_rcv_prli_logo_issue, /* RCV_PRLI */
2856 lpfc_rcv_logo_logo_issue, /* RCV_LOGO */
2857 lpfc_rcv_padisc_logo_issue, /* RCV_ADISC */
2858 lpfc_rcv_padisc_logo_issue, /* RCV_PDISC */
2859 lpfc_rcv_prlo_logo_issue, /* RCV_PRLO */
2860 lpfc_cmpl_plogi_illegal, /* CMPL_PLOGI */
2861 lpfc_disc_illegal, /* CMPL_PRLI */
2862 lpfc_cmpl_logo_logo_issue, /* CMPL_LOGO */
2863 lpfc_disc_illegal, /* CMPL_ADISC */
2864 lpfc_disc_illegal, /* CMPL_REG_LOGIN */
2865 lpfc_device_rm_logo_issue, /* DEVICE_RM */
2866 lpfc_device_recov_logo_issue, /* DEVICE_RECOVERY */
2867
2868 lpfc_rcv_plogi_unmap_node, /* RCV_PLOGI UNMAPPED_NODE */
2869 lpfc_rcv_prli_unmap_node, /* RCV_PRLI */
2870 lpfc_rcv_logo_unmap_node, /* RCV_LOGO */
2871 lpfc_rcv_padisc_unmap_node, /* RCV_ADISC */
2872 lpfc_rcv_padisc_unmap_node, /* RCV_PDISC */
2873 lpfc_rcv_prlo_unmap_node, /* RCV_PRLO */
2874 lpfc_disc_illegal, /* CMPL_PLOGI */
2875 lpfc_disc_illegal, /* CMPL_PRLI */
2876 lpfc_disc_illegal, /* CMPL_LOGO */
2877 lpfc_disc_illegal, /* CMPL_ADISC */
2878 lpfc_disc_illegal, /* CMPL_REG_LOGIN */
2879 lpfc_disc_illegal, /* DEVICE_RM */
2880 lpfc_device_recov_unmap_node, /* DEVICE_RECOVERY */
2881
2882 lpfc_rcv_plogi_mapped_node, /* RCV_PLOGI MAPPED_NODE */
2883 lpfc_rcv_prli_mapped_node, /* RCV_PRLI */
2884 lpfc_rcv_logo_mapped_node, /* RCV_LOGO */
2885 lpfc_rcv_padisc_mapped_node, /* RCV_ADISC */
2886 lpfc_rcv_padisc_mapped_node, /* RCV_PDISC */
2887 lpfc_rcv_prlo_mapped_node, /* RCV_PRLO */
2888 lpfc_disc_illegal, /* CMPL_PLOGI */
2889 lpfc_disc_illegal, /* CMPL_PRLI */
2890 lpfc_disc_illegal, /* CMPL_LOGO */
2891 lpfc_disc_illegal, /* CMPL_ADISC */
2892 lpfc_disc_illegal, /* CMPL_REG_LOGIN */
2893 lpfc_disc_illegal, /* DEVICE_RM */
2894 lpfc_device_recov_mapped_node, /* DEVICE_RECOVERY */
2895
2896 lpfc_rcv_plogi_npr_node, /* RCV_PLOGI NPR_NODE */
2897 lpfc_rcv_prli_npr_node, /* RCV_PRLI */
2898 lpfc_rcv_logo_npr_node, /* RCV_LOGO */
2899 lpfc_rcv_padisc_npr_node, /* RCV_ADISC */
2900 lpfc_rcv_padisc_npr_node, /* RCV_PDISC */
2901 lpfc_rcv_prlo_npr_node, /* RCV_PRLO */
2902 lpfc_cmpl_plogi_npr_node, /* CMPL_PLOGI */
2903 lpfc_cmpl_prli_npr_node, /* CMPL_PRLI */
2904 lpfc_cmpl_logo_npr_node, /* CMPL_LOGO */
2905 lpfc_cmpl_adisc_npr_node, /* CMPL_ADISC */
2906 lpfc_cmpl_reglogin_npr_node, /* CMPL_REG_LOGIN */
2907 lpfc_device_rm_npr_node, /* DEVICE_RM */
2908 lpfc_device_recov_npr_node, /* DEVICE_RECOVERY */
2909 };
2910
2911 int
lpfc_disc_state_machine(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2912 lpfc_disc_state_machine(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2913 void *arg, uint32_t evt)
2914 {
2915 uint32_t cur_state, rc;
2916 uint32_t(*func) (struct lpfc_vport *, struct lpfc_nodelist *, void *,
2917 uint32_t);
2918 uint32_t got_ndlp = 0;
2919 uint32_t data1;
2920
2921 if (lpfc_nlp_get(ndlp))
2922 got_ndlp = 1;
2923
2924 cur_state = ndlp->nlp_state;
2925
2926 data1 = (((uint32_t)ndlp->nlp_fc4_type << 16) |
2927 ((uint32_t)ndlp->nlp_type));
2928 /* DSM in event <evt> on NPort <nlp_DID> in state <cur_state> */
2929 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
2930 "0211 DSM in event x%x on NPort x%x in "
2931 "state %d rpi x%x Data: x%x x%x\n",
2932 evt, ndlp->nlp_DID, cur_state, ndlp->nlp_rpi,
2933 ndlp->nlp_flag, data1);
2934
2935 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_DSM,
2936 "DSM in: evt:%d ste:%d did:x%x",
2937 evt, cur_state, ndlp->nlp_DID);
2938
2939 func = lpfc_disc_action[(cur_state * NLP_EVT_MAX_EVENT) + evt];
2940 rc = (func) (vport, ndlp, arg, evt);
2941
2942 /* DSM out state <rc> on NPort <nlp_DID> */
2943 if (got_ndlp) {
2944 data1 = (((uint32_t)ndlp->nlp_fc4_type << 16) |
2945 ((uint32_t)ndlp->nlp_type));
2946 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
2947 "0212 DSM out state %d on NPort x%x "
2948 "rpi x%x Data: x%x x%x\n",
2949 rc, ndlp->nlp_DID, ndlp->nlp_rpi, ndlp->nlp_flag,
2950 data1);
2951
2952 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_DSM,
2953 "DSM out: ste:%d did:x%x flg:x%x",
2954 rc, ndlp->nlp_DID, ndlp->nlp_flag);
2955 /* Decrement the ndlp reference count held for this function */
2956 lpfc_nlp_put(ndlp);
2957 } else {
2958 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
2959 "0213 DSM out state %d on NPort free\n", rc);
2960
2961 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_DSM,
2962 "DSM out: ste:%d did:x%x flg:x%x",
2963 rc, 0, 0);
2964 }
2965
2966 return rc;
2967 }
2968