1 /*******************************************************************
2 * This file is part of the Emulex Linux Device Driver for *
3 * Fibre Channel Host Bus Adapters. *
4 * Copyright (C) 2004-2015 Emulex. All rights reserved. *
5 * EMULEX and SLI are trademarks of Emulex. *
6 * www.emulex.com *
7 * Portions Copyright (C) 2004-2005 Christoph Hellwig *
8 * *
9 * This program is free software; you can redistribute it and/or *
10 * modify it under the terms of version 2 of the GNU General *
11 * Public License as published by the Free Software Foundation. *
12 * This program is distributed in the hope that it will be useful. *
13 * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND *
14 * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, *
15 * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE *
16 * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD *
17 * TO BE LEGALLY INVALID. See the GNU General Public License for *
18 * more details, a copy of which can be found in the file COPYING *
19 * included with this package. *
20 *******************************************************************/
21
22 #include <linux/blkdev.h>
23 #include <linux/pci.h>
24 #include <linux/slab.h>
25 #include <linux/interrupt.h>
26
27 #include <scsi/scsi.h>
28 #include <scsi/scsi_device.h>
29 #include <scsi/scsi_host.h>
30 #include <scsi/scsi_transport_fc.h>
31
32 #include "lpfc_hw4.h"
33 #include "lpfc_hw.h"
34 #include "lpfc_sli.h"
35 #include "lpfc_sli4.h"
36 #include "lpfc_nl.h"
37 #include "lpfc_disc.h"
38 #include "lpfc_scsi.h"
39 #include "lpfc.h"
40 #include "lpfc_logmsg.h"
41 #include "lpfc_crtn.h"
42 #include "lpfc_vport.h"
43 #include "lpfc_debugfs.h"
44
45
46 /* Called to verify a rcv'ed ADISC was intended for us. */
47 static int
lpfc_check_adisc(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,struct lpfc_name * nn,struct lpfc_name * pn)48 lpfc_check_adisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
49 struct lpfc_name *nn, struct lpfc_name *pn)
50 {
51 /* First, we MUST have a RPI registered */
52 if (!(ndlp->nlp_flag & NLP_RPI_REGISTERED))
53 return 0;
54
55 /* Compare the ADISC rsp WWNN / WWPN matches our internal node
56 * table entry for that node.
57 */
58 if (memcmp(nn, &ndlp->nlp_nodename, sizeof (struct lpfc_name)))
59 return 0;
60
61 if (memcmp(pn, &ndlp->nlp_portname, sizeof (struct lpfc_name)))
62 return 0;
63
64 /* we match, return success */
65 return 1;
66 }
67
68 int
lpfc_check_sparm(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,struct serv_parm * sp,uint32_t class,int flogi)69 lpfc_check_sparm(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
70 struct serv_parm *sp, uint32_t class, int flogi)
71 {
72 volatile struct serv_parm *hsp = &vport->fc_sparam;
73 uint16_t hsp_value, ssp_value = 0;
74
75 /*
76 * The receive data field size and buffer-to-buffer receive data field
77 * size entries are 16 bits but are represented as two 8-bit fields in
78 * the driver data structure to account for rsvd bits and other control
79 * bits. Reconstruct and compare the fields as a 16-bit values before
80 * correcting the byte values.
81 */
82 if (sp->cls1.classValid) {
83 if (!flogi) {
84 hsp_value = ((hsp->cls1.rcvDataSizeMsb << 8) |
85 hsp->cls1.rcvDataSizeLsb);
86 ssp_value = ((sp->cls1.rcvDataSizeMsb << 8) |
87 sp->cls1.rcvDataSizeLsb);
88 if (!ssp_value)
89 goto bad_service_param;
90 if (ssp_value > hsp_value) {
91 sp->cls1.rcvDataSizeLsb =
92 hsp->cls1.rcvDataSizeLsb;
93 sp->cls1.rcvDataSizeMsb =
94 hsp->cls1.rcvDataSizeMsb;
95 }
96 }
97 } else if (class == CLASS1)
98 goto bad_service_param;
99 if (sp->cls2.classValid) {
100 if (!flogi) {
101 hsp_value = ((hsp->cls2.rcvDataSizeMsb << 8) |
102 hsp->cls2.rcvDataSizeLsb);
103 ssp_value = ((sp->cls2.rcvDataSizeMsb << 8) |
104 sp->cls2.rcvDataSizeLsb);
105 if (!ssp_value)
106 goto bad_service_param;
107 if (ssp_value > hsp_value) {
108 sp->cls2.rcvDataSizeLsb =
109 hsp->cls2.rcvDataSizeLsb;
110 sp->cls2.rcvDataSizeMsb =
111 hsp->cls2.rcvDataSizeMsb;
112 }
113 }
114 } else if (class == CLASS2)
115 goto bad_service_param;
116 if (sp->cls3.classValid) {
117 if (!flogi) {
118 hsp_value = ((hsp->cls3.rcvDataSizeMsb << 8) |
119 hsp->cls3.rcvDataSizeLsb);
120 ssp_value = ((sp->cls3.rcvDataSizeMsb << 8) |
121 sp->cls3.rcvDataSizeLsb);
122 if (!ssp_value)
123 goto bad_service_param;
124 if (ssp_value > hsp_value) {
125 sp->cls3.rcvDataSizeLsb =
126 hsp->cls3.rcvDataSizeLsb;
127 sp->cls3.rcvDataSizeMsb =
128 hsp->cls3.rcvDataSizeMsb;
129 }
130 }
131 } else if (class == CLASS3)
132 goto bad_service_param;
133
134 /*
135 * Preserve the upper four bits of the MSB from the PLOGI response.
136 * These bits contain the Buffer-to-Buffer State Change Number
137 * from the target and need to be passed to the FW.
138 */
139 hsp_value = (hsp->cmn.bbRcvSizeMsb << 8) | hsp->cmn.bbRcvSizeLsb;
140 ssp_value = (sp->cmn.bbRcvSizeMsb << 8) | sp->cmn.bbRcvSizeLsb;
141 if (ssp_value > hsp_value) {
142 sp->cmn.bbRcvSizeLsb = hsp->cmn.bbRcvSizeLsb;
143 sp->cmn.bbRcvSizeMsb = (sp->cmn.bbRcvSizeMsb & 0xF0) |
144 (hsp->cmn.bbRcvSizeMsb & 0x0F);
145 }
146
147 memcpy(&ndlp->nlp_nodename, &sp->nodeName, sizeof (struct lpfc_name));
148 memcpy(&ndlp->nlp_portname, &sp->portName, sizeof (struct lpfc_name));
149 return 1;
150 bad_service_param:
151 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
152 "0207 Device %x "
153 "(%02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x) sent "
154 "invalid service parameters. Ignoring device.\n",
155 ndlp->nlp_DID,
156 sp->nodeName.u.wwn[0], sp->nodeName.u.wwn[1],
157 sp->nodeName.u.wwn[2], sp->nodeName.u.wwn[3],
158 sp->nodeName.u.wwn[4], sp->nodeName.u.wwn[5],
159 sp->nodeName.u.wwn[6], sp->nodeName.u.wwn[7]);
160 return 0;
161 }
162
163 static void *
lpfc_check_elscmpl_iocb(struct lpfc_hba * phba,struct lpfc_iocbq * cmdiocb,struct lpfc_iocbq * rspiocb)164 lpfc_check_elscmpl_iocb(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
165 struct lpfc_iocbq *rspiocb)
166 {
167 struct lpfc_dmabuf *pcmd, *prsp;
168 uint32_t *lp;
169 void *ptr = NULL;
170 IOCB_t *irsp;
171
172 irsp = &rspiocb->iocb;
173 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
174
175 /* For lpfc_els_abort, context2 could be zero'ed to delay
176 * freeing associated memory till after ABTS completes.
177 */
178 if (pcmd) {
179 prsp = list_get_first(&pcmd->list, struct lpfc_dmabuf,
180 list);
181 if (prsp) {
182 lp = (uint32_t *) prsp->virt;
183 ptr = (void *)((uint8_t *)lp + sizeof(uint32_t));
184 }
185 } else {
186 /* Force ulpStatus error since we are returning NULL ptr */
187 if (!(irsp->ulpStatus)) {
188 irsp->ulpStatus = IOSTAT_LOCAL_REJECT;
189 irsp->un.ulpWord[4] = IOERR_SLI_ABORTED;
190 }
191 ptr = NULL;
192 }
193 return ptr;
194 }
195
196
197
198 /*
199 * Free resources / clean up outstanding I/Os
200 * associated with a LPFC_NODELIST entry. This
201 * routine effectively results in a "software abort".
202 */
203 int
lpfc_els_abort(struct lpfc_hba * phba,struct lpfc_nodelist * ndlp)204 lpfc_els_abort(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
205 {
206 LIST_HEAD(abort_list);
207 struct lpfc_sli *psli = &phba->sli;
208 struct lpfc_sli_ring *pring = &psli->ring[LPFC_ELS_RING];
209 struct lpfc_iocbq *iocb, *next_iocb;
210
211 /* Abort outstanding I/O on NPort <nlp_DID> */
212 lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_DISCOVERY,
213 "2819 Abort outstanding I/O on NPort x%x "
214 "Data: x%x x%x x%x\n",
215 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
216 ndlp->nlp_rpi);
217 /* Clean up all fabric IOs first.*/
218 lpfc_fabric_abort_nport(ndlp);
219
220 /*
221 * Lock the ELS ring txcmplq for SLI3/SLI4 and build a local list
222 * of all ELS IOs that need an ABTS. The IOs need to stay on the
223 * txcmplq so that the abort operation completes them successfully.
224 */
225 spin_lock_irq(&phba->hbalock);
226 if (phba->sli_rev == LPFC_SLI_REV4)
227 spin_lock(&pring->ring_lock);
228 list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq, list) {
229 /* Add to abort_list on on NDLP match. */
230 if (lpfc_check_sli_ndlp(phba, pring, iocb, ndlp))
231 list_add_tail(&iocb->dlist, &abort_list);
232 }
233 if (phba->sli_rev == LPFC_SLI_REV4)
234 spin_unlock(&pring->ring_lock);
235 spin_unlock_irq(&phba->hbalock);
236
237 /* Abort the targeted IOs and remove them from the abort list. */
238 list_for_each_entry_safe(iocb, next_iocb, &abort_list, dlist) {
239 spin_lock_irq(&phba->hbalock);
240 list_del_init(&iocb->dlist);
241 lpfc_sli_issue_abort_iotag(phba, pring, iocb);
242 spin_unlock_irq(&phba->hbalock);
243 }
244
245 INIT_LIST_HEAD(&abort_list);
246
247 /* Now process the txq */
248 spin_lock_irq(&phba->hbalock);
249 if (phba->sli_rev == LPFC_SLI_REV4)
250 spin_lock(&pring->ring_lock);
251
252 list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) {
253 /* Check to see if iocb matches the nport we are looking for */
254 if (lpfc_check_sli_ndlp(phba, pring, iocb, ndlp)) {
255 list_del_init(&iocb->list);
256 list_add_tail(&iocb->list, &abort_list);
257 }
258 }
259
260 if (phba->sli_rev == LPFC_SLI_REV4)
261 spin_unlock(&pring->ring_lock);
262 spin_unlock_irq(&phba->hbalock);
263
264 /* Cancel all the IOCBs from the completions list */
265 lpfc_sli_cancel_iocbs(phba, &abort_list,
266 IOSTAT_LOCAL_REJECT, IOERR_SLI_ABORTED);
267
268 lpfc_cancel_retry_delay_tmo(phba->pport, ndlp);
269 return 0;
270 }
271
272 static int
lpfc_rcv_plogi(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,struct lpfc_iocbq * cmdiocb)273 lpfc_rcv_plogi(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
274 struct lpfc_iocbq *cmdiocb)
275 {
276 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
277 struct lpfc_hba *phba = vport->phba;
278 struct lpfc_dmabuf *pcmd;
279 uint64_t nlp_portwwn = 0;
280 uint32_t *lp;
281 IOCB_t *icmd;
282 struct serv_parm *sp;
283 uint32_t ed_tov;
284 LPFC_MBOXQ_t *mbox;
285 struct ls_rjt stat;
286 int rc;
287
288 memset(&stat, 0, sizeof (struct ls_rjt));
289 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
290 lp = (uint32_t *) pcmd->virt;
291 sp = (struct serv_parm *) ((uint8_t *) lp + sizeof (uint32_t));
292 if (wwn_to_u64(sp->portName.u.wwn) == 0) {
293 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
294 "0140 PLOGI Reject: invalid nname\n");
295 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
296 stat.un.b.lsRjtRsnCodeExp = LSEXP_INVALID_PNAME;
297 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
298 NULL);
299 return 0;
300 }
301 if (wwn_to_u64(sp->nodeName.u.wwn) == 0) {
302 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
303 "0141 PLOGI Reject: invalid pname\n");
304 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
305 stat.un.b.lsRjtRsnCodeExp = LSEXP_INVALID_NNAME;
306 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
307 NULL);
308 return 0;
309 }
310
311 nlp_portwwn = wwn_to_u64(ndlp->nlp_portname.u.wwn);
312 if ((lpfc_check_sparm(vport, ndlp, sp, CLASS3, 0) == 0)) {
313 /* Reject this request because invalid parameters */
314 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
315 stat.un.b.lsRjtRsnCodeExp = LSEXP_SPARM_OPTIONS;
316 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
317 NULL);
318 return 0;
319 }
320 icmd = &cmdiocb->iocb;
321
322 /* PLOGI chkparm OK */
323 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
324 "0114 PLOGI chkparm OK Data: x%x x%x x%x "
325 "x%x x%x x%x\n",
326 ndlp->nlp_DID, ndlp->nlp_state, ndlp->nlp_flag,
327 ndlp->nlp_rpi, vport->port_state,
328 vport->fc_flag);
329
330 if (vport->cfg_fcp_class == 2 && sp->cls2.classValid)
331 ndlp->nlp_fcp_info |= CLASS2;
332 else
333 ndlp->nlp_fcp_info |= CLASS3;
334
335 ndlp->nlp_class_sup = 0;
336 if (sp->cls1.classValid)
337 ndlp->nlp_class_sup |= FC_COS_CLASS1;
338 if (sp->cls2.classValid)
339 ndlp->nlp_class_sup |= FC_COS_CLASS2;
340 if (sp->cls3.classValid)
341 ndlp->nlp_class_sup |= FC_COS_CLASS3;
342 if (sp->cls4.classValid)
343 ndlp->nlp_class_sup |= FC_COS_CLASS4;
344 ndlp->nlp_maxframe =
345 ((sp->cmn.bbRcvSizeMsb & 0x0F) << 8) | sp->cmn.bbRcvSizeLsb;
346
347 /* if already logged in, do implicit logout */
348 switch (ndlp->nlp_state) {
349 case NLP_STE_NPR_NODE:
350 if (!(ndlp->nlp_flag & NLP_NPR_ADISC))
351 break;
352 case NLP_STE_REG_LOGIN_ISSUE:
353 case NLP_STE_PRLI_ISSUE:
354 case NLP_STE_UNMAPPED_NODE:
355 case NLP_STE_MAPPED_NODE:
356 /* lpfc_plogi_confirm_nport skips fabric did, handle it here */
357 if (!(ndlp->nlp_type & NLP_FABRIC)) {
358 lpfc_els_rsp_acc(vport, ELS_CMD_PLOGI, cmdiocb,
359 ndlp, NULL);
360 return 1;
361 }
362 if (nlp_portwwn != 0 &&
363 nlp_portwwn != wwn_to_u64(sp->portName.u.wwn))
364 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
365 "0143 PLOGI recv'd from DID: x%x "
366 "WWPN changed: old %llx new %llx\n",
367 ndlp->nlp_DID,
368 (unsigned long long)nlp_portwwn,
369 (unsigned long long)
370 wwn_to_u64(sp->portName.u.wwn));
371
372 ndlp->nlp_prev_state = ndlp->nlp_state;
373 /* rport needs to be unregistered first */
374 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
375 break;
376 }
377
378 /* Check for Nport to NPort pt2pt protocol */
379 if ((vport->fc_flag & FC_PT2PT) &&
380 !(vport->fc_flag & FC_PT2PT_PLOGI)) {
381 /* rcv'ed PLOGI decides what our NPortId will be */
382 vport->fc_myDID = icmd->un.rcvels.parmRo;
383
384 ed_tov = be32_to_cpu(sp->cmn.e_d_tov);
385 if (sp->cmn.edtovResolution) {
386 /* E_D_TOV ticks are in nanoseconds */
387 ed_tov = (phba->fc_edtov + 999999) / 1000000;
388 }
389
390 /*
391 * For pt-to-pt, use the larger EDTOV
392 * RATOV = 2 * EDTOV
393 */
394 if (ed_tov > phba->fc_edtov)
395 phba->fc_edtov = ed_tov;
396 phba->fc_ratov = (2 * phba->fc_edtov) / 1000;
397
398 memcpy(&phba->fc_fabparam, sp, sizeof(struct serv_parm));
399
400 /* Issue config_link / reg_vfi to account for updated TOV's */
401
402 if (phba->sli_rev == LPFC_SLI_REV4)
403 lpfc_issue_reg_vfi(vport);
404 else {
405 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
406 if (mbox == NULL)
407 goto out;
408 lpfc_config_link(phba, mbox);
409 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
410 mbox->vport = vport;
411 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
412 if (rc == MBX_NOT_FINISHED) {
413 mempool_free(mbox, phba->mbox_mem_pool);
414 goto out;
415 }
416 }
417
418 lpfc_can_disctmo(vport);
419 }
420
421 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
422 if (!mbox)
423 goto out;
424
425 /* Registering an existing RPI behaves differently for SLI3 vs SLI4 */
426 if (phba->sli_rev == LPFC_SLI_REV4)
427 lpfc_unreg_rpi(vport, ndlp);
428
429 rc = lpfc_reg_rpi(phba, vport->vpi, icmd->un.rcvels.remoteID,
430 (uint8_t *) sp, mbox, ndlp->nlp_rpi);
431 if (rc) {
432 mempool_free(mbox, phba->mbox_mem_pool);
433 goto out;
434 }
435
436 /* ACC PLOGI rsp command needs to execute first,
437 * queue this mbox command to be processed later.
438 */
439 mbox->mbox_cmpl = lpfc_mbx_cmpl_reg_login;
440 /*
441 * mbox->context2 = lpfc_nlp_get(ndlp) deferred until mailbox
442 * command issued in lpfc_cmpl_els_acc().
443 */
444 mbox->vport = vport;
445 spin_lock_irq(shost->host_lock);
446 ndlp->nlp_flag |= (NLP_ACC_REGLOGIN | NLP_RCV_PLOGI);
447 spin_unlock_irq(shost->host_lock);
448
449 /*
450 * If there is an outstanding PLOGI issued, abort it before
451 * sending ACC rsp for received PLOGI. If pending plogi
452 * is not canceled here, the plogi will be rejected by
453 * remote port and will be retried. On a configuration with
454 * single discovery thread, this will cause a huge delay in
455 * discovery. Also this will cause multiple state machines
456 * running in parallel for this node.
457 * This only applies to a fabric environment.
458 */
459 if ((ndlp->nlp_state == NLP_STE_PLOGI_ISSUE) &&
460 (vport->fc_flag & FC_FABRIC)) {
461 /* software abort outstanding PLOGI */
462 lpfc_els_abort(phba, ndlp);
463 }
464
465 if ((vport->port_type == LPFC_NPIV_PORT &&
466 vport->cfg_restrict_login)) {
467
468 /* In order to preserve RPIs, we want to cleanup
469 * the default RPI the firmware created to rcv
470 * this ELS request. The only way to do this is
471 * to register, then unregister the RPI.
472 */
473 spin_lock_irq(shost->host_lock);
474 ndlp->nlp_flag |= NLP_RM_DFLT_RPI;
475 spin_unlock_irq(shost->host_lock);
476 stat.un.b.lsRjtRsnCode = LSRJT_INVALID_CMD;
477 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
478 rc = lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb,
479 ndlp, mbox);
480 if (rc)
481 mempool_free(mbox, phba->mbox_mem_pool);
482 return 1;
483 }
484 rc = lpfc_els_rsp_acc(vport, ELS_CMD_PLOGI, cmdiocb, ndlp, mbox);
485 if (rc)
486 mempool_free(mbox, phba->mbox_mem_pool);
487 return 1;
488 out:
489 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
490 stat.un.b.lsRjtRsnCodeExp = LSEXP_OUT_OF_RESOURCE;
491 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
492 return 0;
493 }
494
495 /**
496 * lpfc_mbx_cmpl_resume_rpi - Resume RPI completion routine
497 * @phba: pointer to lpfc hba data structure.
498 * @mboxq: pointer to mailbox object
499 *
500 * This routine is invoked to issue a completion to a rcv'ed
501 * ADISC or PDISC after the paused RPI has been resumed.
502 **/
503 static void
lpfc_mbx_cmpl_resume_rpi(struct lpfc_hba * phba,LPFC_MBOXQ_t * mboxq)504 lpfc_mbx_cmpl_resume_rpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
505 {
506 struct lpfc_vport *vport;
507 struct lpfc_iocbq *elsiocb;
508 struct lpfc_nodelist *ndlp;
509 uint32_t cmd;
510
511 elsiocb = (struct lpfc_iocbq *)mboxq->context1;
512 ndlp = (struct lpfc_nodelist *) mboxq->context2;
513 vport = mboxq->vport;
514 cmd = elsiocb->drvrTimeout;
515
516 if (cmd == ELS_CMD_ADISC) {
517 lpfc_els_rsp_adisc_acc(vport, elsiocb, ndlp);
518 } else {
519 lpfc_els_rsp_acc(vport, ELS_CMD_PLOGI, elsiocb,
520 ndlp, NULL);
521 }
522 kfree(elsiocb);
523 mempool_free(mboxq, phba->mbox_mem_pool);
524 }
525
526 static int
lpfc_rcv_padisc(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,struct lpfc_iocbq * cmdiocb)527 lpfc_rcv_padisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
528 struct lpfc_iocbq *cmdiocb)
529 {
530 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
531 struct lpfc_iocbq *elsiocb;
532 struct lpfc_dmabuf *pcmd;
533 struct serv_parm *sp;
534 struct lpfc_name *pnn, *ppn;
535 struct ls_rjt stat;
536 ADISC *ap;
537 IOCB_t *icmd;
538 uint32_t *lp;
539 uint32_t cmd;
540
541 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
542 lp = (uint32_t *) pcmd->virt;
543
544 cmd = *lp++;
545 if (cmd == ELS_CMD_ADISC) {
546 ap = (ADISC *) lp;
547 pnn = (struct lpfc_name *) & ap->nodeName;
548 ppn = (struct lpfc_name *) & ap->portName;
549 } else {
550 sp = (struct serv_parm *) lp;
551 pnn = (struct lpfc_name *) & sp->nodeName;
552 ppn = (struct lpfc_name *) & sp->portName;
553 }
554
555 icmd = &cmdiocb->iocb;
556 if (icmd->ulpStatus == 0 && lpfc_check_adisc(vport, ndlp, pnn, ppn)) {
557
558 /*
559 * As soon as we send ACC, the remote NPort can
560 * start sending us data. Thus, for SLI4 we must
561 * resume the RPI before the ACC goes out.
562 */
563 if (vport->phba->sli_rev == LPFC_SLI_REV4) {
564 elsiocb = kmalloc(sizeof(struct lpfc_iocbq),
565 GFP_KERNEL);
566 if (elsiocb) {
567
568 /* Save info from cmd IOCB used in rsp */
569 memcpy((uint8_t *)elsiocb, (uint8_t *)cmdiocb,
570 sizeof(struct lpfc_iocbq));
571
572 /* Save the ELS cmd */
573 elsiocb->drvrTimeout = cmd;
574
575 lpfc_sli4_resume_rpi(ndlp,
576 lpfc_mbx_cmpl_resume_rpi, elsiocb);
577 goto out;
578 }
579 }
580
581 if (cmd == ELS_CMD_ADISC) {
582 lpfc_els_rsp_adisc_acc(vport, cmdiocb, ndlp);
583 } else {
584 lpfc_els_rsp_acc(vport, ELS_CMD_PLOGI, cmdiocb,
585 ndlp, NULL);
586 }
587 out:
588 /* If we are authenticated, move to the proper state */
589 if (ndlp->nlp_type & NLP_FCP_TARGET)
590 lpfc_nlp_set_state(vport, ndlp, NLP_STE_MAPPED_NODE);
591 else
592 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
593
594 return 1;
595 }
596 /* Reject this request because invalid parameters */
597 stat.un.b.lsRjtRsvd0 = 0;
598 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
599 stat.un.b.lsRjtRsnCodeExp = LSEXP_SPARM_OPTIONS;
600 stat.un.b.vendorUnique = 0;
601 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
602
603 /* 1 sec timeout */
604 mod_timer(&ndlp->nlp_delayfunc, jiffies + msecs_to_jiffies(1000));
605
606 spin_lock_irq(shost->host_lock);
607 ndlp->nlp_flag |= NLP_DELAY_TMO;
608 spin_unlock_irq(shost->host_lock);
609 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
610 ndlp->nlp_prev_state = ndlp->nlp_state;
611 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
612 return 0;
613 }
614
615 static int
lpfc_rcv_logo(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,struct lpfc_iocbq * cmdiocb,uint32_t els_cmd)616 lpfc_rcv_logo(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
617 struct lpfc_iocbq *cmdiocb, uint32_t els_cmd)
618 {
619 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
620 struct lpfc_hba *phba = vport->phba;
621 struct lpfc_vport **vports;
622 int i, active_vlink_present = 0 ;
623
624 /* Put ndlp in NPR state with 1 sec timeout for plogi, ACC logo */
625 /* Only call LOGO ACC for first LOGO, this avoids sending unnecessary
626 * PLOGIs during LOGO storms from a device.
627 */
628 spin_lock_irq(shost->host_lock);
629 ndlp->nlp_flag |= NLP_LOGO_ACC;
630 spin_unlock_irq(shost->host_lock);
631 if (els_cmd == ELS_CMD_PRLO)
632 lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
633 else
634 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
635 if (ndlp->nlp_DID == Fabric_DID) {
636 if (vport->port_state <= LPFC_FDISC)
637 goto out;
638 lpfc_linkdown_port(vport);
639 spin_lock_irq(shost->host_lock);
640 vport->fc_flag |= FC_VPORT_LOGO_RCVD;
641 spin_unlock_irq(shost->host_lock);
642 vports = lpfc_create_vport_work_array(phba);
643 if (vports) {
644 for (i = 0; i <= phba->max_vports && vports[i] != NULL;
645 i++) {
646 if ((!(vports[i]->fc_flag &
647 FC_VPORT_LOGO_RCVD)) &&
648 (vports[i]->port_state > LPFC_FDISC)) {
649 active_vlink_present = 1;
650 break;
651 }
652 }
653 lpfc_destroy_vport_work_array(phba, vports);
654 }
655
656 /*
657 * Don't re-instantiate if vport is marked for deletion.
658 * If we are here first then vport_delete is going to wait
659 * for discovery to complete.
660 */
661 if (!(vport->load_flag & FC_UNLOADING) &&
662 active_vlink_present) {
663 /*
664 * If there are other active VLinks present,
665 * re-instantiate the Vlink using FDISC.
666 */
667 mod_timer(&ndlp->nlp_delayfunc,
668 jiffies + msecs_to_jiffies(1000));
669 spin_lock_irq(shost->host_lock);
670 ndlp->nlp_flag |= NLP_DELAY_TMO;
671 spin_unlock_irq(shost->host_lock);
672 ndlp->nlp_last_elscmd = ELS_CMD_FDISC;
673 vport->port_state = LPFC_FDISC;
674 } else {
675 spin_lock_irq(shost->host_lock);
676 phba->pport->fc_flag &= ~FC_LOGO_RCVD_DID_CHNG;
677 spin_unlock_irq(shost->host_lock);
678 lpfc_retry_pport_discovery(phba);
679 }
680 } else if ((!(ndlp->nlp_type & NLP_FABRIC) &&
681 ((ndlp->nlp_type & NLP_FCP_TARGET) ||
682 !(ndlp->nlp_type & NLP_FCP_INITIATOR))) ||
683 (ndlp->nlp_state == NLP_STE_ADISC_ISSUE)) {
684 /* Only try to re-login if this is NOT a Fabric Node */
685 mod_timer(&ndlp->nlp_delayfunc,
686 jiffies + msecs_to_jiffies(1000 * 1));
687 spin_lock_irq(shost->host_lock);
688 ndlp->nlp_flag |= NLP_DELAY_TMO;
689 spin_unlock_irq(shost->host_lock);
690
691 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
692 }
693 out:
694 ndlp->nlp_prev_state = ndlp->nlp_state;
695 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
696
697 spin_lock_irq(shost->host_lock);
698 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
699 spin_unlock_irq(shost->host_lock);
700 /* The driver has to wait until the ACC completes before it continues
701 * processing the LOGO. The action will resume in
702 * lpfc_cmpl_els_logo_acc routine. Since part of processing includes an
703 * unreg_login, the driver waits so the ACC does not get aborted.
704 */
705 return 0;
706 }
707
708 static void
lpfc_rcv_prli(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,struct lpfc_iocbq * cmdiocb)709 lpfc_rcv_prli(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
710 struct lpfc_iocbq *cmdiocb)
711 {
712 struct lpfc_dmabuf *pcmd;
713 uint32_t *lp;
714 PRLI *npr;
715 struct fc_rport *rport = ndlp->rport;
716 u32 roles;
717
718 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
719 lp = (uint32_t *) pcmd->virt;
720 npr = (PRLI *) ((uint8_t *) lp + sizeof (uint32_t));
721
722 ndlp->nlp_type &= ~(NLP_FCP_TARGET | NLP_FCP_INITIATOR);
723 ndlp->nlp_fcp_info &= ~NLP_FCP_2_DEVICE;
724 ndlp->nlp_flag &= ~NLP_FIRSTBURST;
725 if (npr->prliType == PRLI_FCP_TYPE) {
726 if (npr->initiatorFunc)
727 ndlp->nlp_type |= NLP_FCP_INITIATOR;
728 if (npr->targetFunc) {
729 ndlp->nlp_type |= NLP_FCP_TARGET;
730 if (npr->writeXferRdyDis)
731 ndlp->nlp_flag |= NLP_FIRSTBURST;
732 }
733 if (npr->Retry)
734 ndlp->nlp_fcp_info |= NLP_FCP_2_DEVICE;
735 }
736 if (rport) {
737 /* We need to update the rport role values */
738 roles = FC_RPORT_ROLE_UNKNOWN;
739 if (ndlp->nlp_type & NLP_FCP_INITIATOR)
740 roles |= FC_RPORT_ROLE_FCP_INITIATOR;
741 if (ndlp->nlp_type & NLP_FCP_TARGET)
742 roles |= FC_RPORT_ROLE_FCP_TARGET;
743
744 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
745 "rport rolechg: role:x%x did:x%x flg:x%x",
746 roles, ndlp->nlp_DID, ndlp->nlp_flag);
747
748 fc_remote_port_rolechg(rport, roles);
749 }
750 }
751
752 static uint32_t
lpfc_disc_set_adisc(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp)753 lpfc_disc_set_adisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
754 {
755 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
756
757 if (!(ndlp->nlp_flag & NLP_RPI_REGISTERED)) {
758 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
759 return 0;
760 }
761
762 if (!(vport->fc_flag & FC_PT2PT)) {
763 /* Check config parameter use-adisc or FCP-2 */
764 if (vport->cfg_use_adisc && ((vport->fc_flag & FC_RSCN_MODE) ||
765 ((ndlp->nlp_fcp_info & NLP_FCP_2_DEVICE) &&
766 (ndlp->nlp_type & NLP_FCP_TARGET)))) {
767 spin_lock_irq(shost->host_lock);
768 ndlp->nlp_flag |= NLP_NPR_ADISC;
769 spin_unlock_irq(shost->host_lock);
770 return 1;
771 }
772 }
773 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
774 lpfc_unreg_rpi(vport, ndlp);
775 return 0;
776 }
777
778 /**
779 * lpfc_release_rpi - Release a RPI by issuing unreg_login mailbox cmd.
780 * @phba : Pointer to lpfc_hba structure.
781 * @vport: Pointer to lpfc_vport structure.
782 * @rpi : rpi to be release.
783 *
784 * This function will send a unreg_login mailbox command to the firmware
785 * to release a rpi.
786 **/
787 void
lpfc_release_rpi(struct lpfc_hba * phba,struct lpfc_vport * vport,uint16_t rpi)788 lpfc_release_rpi(struct lpfc_hba *phba,
789 struct lpfc_vport *vport,
790 uint16_t rpi)
791 {
792 LPFC_MBOXQ_t *pmb;
793 int rc;
794
795 pmb = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool,
796 GFP_KERNEL);
797 if (!pmb)
798 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
799 "2796 mailbox memory allocation failed \n");
800 else {
801 lpfc_unreg_login(phba, vport->vpi, rpi, pmb);
802 pmb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
803 rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);
804 if (rc == MBX_NOT_FINISHED)
805 mempool_free(pmb, phba->mbox_mem_pool);
806 }
807 }
808
809 static uint32_t
lpfc_disc_illegal(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)810 lpfc_disc_illegal(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
811 void *arg, uint32_t evt)
812 {
813 struct lpfc_hba *phba;
814 LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg;
815 uint16_t rpi;
816
817 phba = vport->phba;
818 /* Release the RPI if reglogin completing */
819 if (!(phba->pport->load_flag & FC_UNLOADING) &&
820 (evt == NLP_EVT_CMPL_REG_LOGIN) &&
821 (!pmb->u.mb.mbxStatus)) {
822 rpi = pmb->u.mb.un.varWords[0];
823 lpfc_release_rpi(phba, vport, rpi);
824 }
825 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
826 "0271 Illegal State Transition: node x%x "
827 "event x%x, state x%x Data: x%x x%x\n",
828 ndlp->nlp_DID, evt, ndlp->nlp_state, ndlp->nlp_rpi,
829 ndlp->nlp_flag);
830 return ndlp->nlp_state;
831 }
832
833 static uint32_t
lpfc_cmpl_plogi_illegal(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)834 lpfc_cmpl_plogi_illegal(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
835 void *arg, uint32_t evt)
836 {
837 /* This transition is only legal if we previously
838 * rcv'ed a PLOGI. Since we don't want 2 discovery threads
839 * working on the same NPortID, do nothing for this thread
840 * to stop it.
841 */
842 if (!(ndlp->nlp_flag & NLP_RCV_PLOGI)) {
843 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
844 "0272 Illegal State Transition: node x%x "
845 "event x%x, state x%x Data: x%x x%x\n",
846 ndlp->nlp_DID, evt, ndlp->nlp_state, ndlp->nlp_rpi,
847 ndlp->nlp_flag);
848 }
849 return ndlp->nlp_state;
850 }
851
852 /* Start of Discovery State Machine routines */
853
854 static uint32_t
lpfc_rcv_plogi_unused_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)855 lpfc_rcv_plogi_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
856 void *arg, uint32_t evt)
857 {
858 struct lpfc_iocbq *cmdiocb;
859
860 cmdiocb = (struct lpfc_iocbq *) arg;
861
862 if (lpfc_rcv_plogi(vport, ndlp, cmdiocb)) {
863 return ndlp->nlp_state;
864 }
865 return NLP_STE_FREED_NODE;
866 }
867
868 static uint32_t
lpfc_rcv_els_unused_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)869 lpfc_rcv_els_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
870 void *arg, uint32_t evt)
871 {
872 lpfc_issue_els_logo(vport, ndlp, 0);
873 return ndlp->nlp_state;
874 }
875
876 static uint32_t
lpfc_rcv_logo_unused_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)877 lpfc_rcv_logo_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
878 void *arg, uint32_t evt)
879 {
880 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
881 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
882
883 spin_lock_irq(shost->host_lock);
884 ndlp->nlp_flag |= NLP_LOGO_ACC;
885 spin_unlock_irq(shost->host_lock);
886 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
887
888 return ndlp->nlp_state;
889 }
890
891 static uint32_t
lpfc_cmpl_logo_unused_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)892 lpfc_cmpl_logo_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
893 void *arg, uint32_t evt)
894 {
895 return NLP_STE_FREED_NODE;
896 }
897
898 static uint32_t
lpfc_device_rm_unused_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)899 lpfc_device_rm_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
900 void *arg, uint32_t evt)
901 {
902 return NLP_STE_FREED_NODE;
903 }
904
905 static uint32_t
lpfc_device_recov_unused_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)906 lpfc_device_recov_unused_node(struct lpfc_vport *vport,
907 struct lpfc_nodelist *ndlp,
908 void *arg, uint32_t evt)
909 {
910 return ndlp->nlp_state;
911 }
912
913 static uint32_t
lpfc_rcv_plogi_plogi_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)914 lpfc_rcv_plogi_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
915 void *arg, uint32_t evt)
916 {
917 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
918 struct lpfc_hba *phba = vport->phba;
919 struct lpfc_iocbq *cmdiocb = arg;
920 struct lpfc_dmabuf *pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
921 uint32_t *lp = (uint32_t *) pcmd->virt;
922 struct serv_parm *sp = (struct serv_parm *) (lp + 1);
923 struct ls_rjt stat;
924 int port_cmp;
925
926 memset(&stat, 0, sizeof (struct ls_rjt));
927
928 /* For a PLOGI, we only accept if our portname is less
929 * than the remote portname.
930 */
931 phba->fc_stat.elsLogiCol++;
932 port_cmp = memcmp(&vport->fc_portname, &sp->portName,
933 sizeof(struct lpfc_name));
934
935 if (port_cmp >= 0) {
936 /* Reject this request because the remote node will accept
937 ours */
938 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
939 stat.un.b.lsRjtRsnCodeExp = LSEXP_CMD_IN_PROGRESS;
940 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
941 NULL);
942 } else {
943 if (lpfc_rcv_plogi(vport, ndlp, cmdiocb) &&
944 (ndlp->nlp_flag & NLP_NPR_2B_DISC) &&
945 (vport->num_disc_nodes)) {
946 spin_lock_irq(shost->host_lock);
947 ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
948 spin_unlock_irq(shost->host_lock);
949 /* Check if there are more PLOGIs to be sent */
950 lpfc_more_plogi(vport);
951 if (vport->num_disc_nodes == 0) {
952 spin_lock_irq(shost->host_lock);
953 vport->fc_flag &= ~FC_NDISC_ACTIVE;
954 spin_unlock_irq(shost->host_lock);
955 lpfc_can_disctmo(vport);
956 lpfc_end_rscn(vport);
957 }
958 }
959 } /* If our portname was less */
960
961 return ndlp->nlp_state;
962 }
963
964 static uint32_t
lpfc_rcv_prli_plogi_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)965 lpfc_rcv_prli_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
966 void *arg, uint32_t evt)
967 {
968 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
969 struct ls_rjt stat;
970
971 memset(&stat, 0, sizeof (struct ls_rjt));
972 stat.un.b.lsRjtRsnCode = LSRJT_LOGICAL_BSY;
973 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
974 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
975 return ndlp->nlp_state;
976 }
977
978 static uint32_t
lpfc_rcv_logo_plogi_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)979 lpfc_rcv_logo_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
980 void *arg, uint32_t evt)
981 {
982 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
983
984 /* software abort outstanding PLOGI */
985 lpfc_els_abort(vport->phba, ndlp);
986
987 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
988 return ndlp->nlp_state;
989 }
990
991 static uint32_t
lpfc_rcv_els_plogi_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)992 lpfc_rcv_els_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
993 void *arg, uint32_t evt)
994 {
995 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
996 struct lpfc_hba *phba = vport->phba;
997 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
998
999 /* software abort outstanding PLOGI */
1000 lpfc_els_abort(phba, ndlp);
1001
1002 if (evt == NLP_EVT_RCV_LOGO) {
1003 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
1004 } else {
1005 lpfc_issue_els_logo(vport, ndlp, 0);
1006 }
1007
1008 /* Put ndlp in npr state set plogi timer for 1 sec */
1009 mod_timer(&ndlp->nlp_delayfunc, jiffies + msecs_to_jiffies(1000 * 1));
1010 spin_lock_irq(shost->host_lock);
1011 ndlp->nlp_flag |= NLP_DELAY_TMO;
1012 spin_unlock_irq(shost->host_lock);
1013 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
1014 ndlp->nlp_prev_state = NLP_STE_PLOGI_ISSUE;
1015 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1016
1017 return ndlp->nlp_state;
1018 }
1019
1020 static uint32_t
lpfc_cmpl_plogi_plogi_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1021 lpfc_cmpl_plogi_plogi_issue(struct lpfc_vport *vport,
1022 struct lpfc_nodelist *ndlp,
1023 void *arg,
1024 uint32_t evt)
1025 {
1026 struct lpfc_hba *phba = vport->phba;
1027 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1028 struct lpfc_iocbq *cmdiocb, *rspiocb;
1029 struct lpfc_dmabuf *pcmd, *prsp, *mp;
1030 uint32_t *lp;
1031 IOCB_t *irsp;
1032 struct serv_parm *sp;
1033 uint32_t ed_tov;
1034 LPFC_MBOXQ_t *mbox;
1035 int rc;
1036
1037 cmdiocb = (struct lpfc_iocbq *) arg;
1038 rspiocb = cmdiocb->context_un.rsp_iocb;
1039
1040 if (ndlp->nlp_flag & NLP_ACC_REGLOGIN) {
1041 /* Recovery from PLOGI collision logic */
1042 return ndlp->nlp_state;
1043 }
1044
1045 irsp = &rspiocb->iocb;
1046
1047 if (irsp->ulpStatus)
1048 goto out;
1049
1050 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
1051
1052 prsp = list_get_first(&pcmd->list, struct lpfc_dmabuf, list);
1053 if (!prsp)
1054 goto out;
1055
1056 lp = (uint32_t *) prsp->virt;
1057 sp = (struct serv_parm *) ((uint8_t *) lp + sizeof (uint32_t));
1058
1059 /* Some switches have FDMI servers returning 0 for WWN */
1060 if ((ndlp->nlp_DID != FDMI_DID) &&
1061 (wwn_to_u64(sp->portName.u.wwn) == 0 ||
1062 wwn_to_u64(sp->nodeName.u.wwn) == 0)) {
1063 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
1064 "0142 PLOGI RSP: Invalid WWN.\n");
1065 goto out;
1066 }
1067 if (!lpfc_check_sparm(vport, ndlp, sp, CLASS3, 0))
1068 goto out;
1069 /* PLOGI chkparm OK */
1070 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
1071 "0121 PLOGI chkparm OK Data: x%x x%x x%x x%x\n",
1072 ndlp->nlp_DID, ndlp->nlp_state,
1073 ndlp->nlp_flag, ndlp->nlp_rpi);
1074 if (vport->cfg_fcp_class == 2 && (sp->cls2.classValid))
1075 ndlp->nlp_fcp_info |= CLASS2;
1076 else
1077 ndlp->nlp_fcp_info |= CLASS3;
1078
1079 ndlp->nlp_class_sup = 0;
1080 if (sp->cls1.classValid)
1081 ndlp->nlp_class_sup |= FC_COS_CLASS1;
1082 if (sp->cls2.classValid)
1083 ndlp->nlp_class_sup |= FC_COS_CLASS2;
1084 if (sp->cls3.classValid)
1085 ndlp->nlp_class_sup |= FC_COS_CLASS3;
1086 if (sp->cls4.classValid)
1087 ndlp->nlp_class_sup |= FC_COS_CLASS4;
1088 ndlp->nlp_maxframe =
1089 ((sp->cmn.bbRcvSizeMsb & 0x0F) << 8) | sp->cmn.bbRcvSizeLsb;
1090
1091 if ((vport->fc_flag & FC_PT2PT) &&
1092 (vport->fc_flag & FC_PT2PT_PLOGI)) {
1093 ed_tov = be32_to_cpu(sp->cmn.e_d_tov);
1094 if (sp->cmn.edtovResolution) {
1095 /* E_D_TOV ticks are in nanoseconds */
1096 ed_tov = (phba->fc_edtov + 999999) / 1000000;
1097 }
1098
1099 /*
1100 * Use the larger EDTOV
1101 * RATOV = 2 * EDTOV for pt-to-pt
1102 */
1103 if (ed_tov > phba->fc_edtov)
1104 phba->fc_edtov = ed_tov;
1105 phba->fc_ratov = (2 * phba->fc_edtov) / 1000;
1106
1107 memcpy(&phba->fc_fabparam, sp, sizeof(struct serv_parm));
1108
1109 /* Issue config_link / reg_vfi to account for updated TOV's */
1110 if (phba->sli_rev == LPFC_SLI_REV4) {
1111 lpfc_issue_reg_vfi(vport);
1112 } else {
1113 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1114 if (!mbox) {
1115 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
1116 "0133 PLOGI: no memory "
1117 "for config_link "
1118 "Data: x%x x%x x%x x%x\n",
1119 ndlp->nlp_DID, ndlp->nlp_state,
1120 ndlp->nlp_flag, ndlp->nlp_rpi);
1121 goto out;
1122 }
1123
1124 lpfc_config_link(phba, mbox);
1125
1126 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
1127 mbox->vport = vport;
1128 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
1129 if (rc == MBX_NOT_FINISHED) {
1130 mempool_free(mbox, phba->mbox_mem_pool);
1131 goto out;
1132 }
1133 }
1134 }
1135
1136 lpfc_unreg_rpi(vport, ndlp);
1137
1138 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1139 if (!mbox) {
1140 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
1141 "0018 PLOGI: no memory for reg_login "
1142 "Data: x%x x%x x%x x%x\n",
1143 ndlp->nlp_DID, ndlp->nlp_state,
1144 ndlp->nlp_flag, ndlp->nlp_rpi);
1145 goto out;
1146 }
1147
1148 if (lpfc_reg_rpi(phba, vport->vpi, irsp->un.elsreq64.remoteID,
1149 (uint8_t *) sp, mbox, ndlp->nlp_rpi) == 0) {
1150 switch (ndlp->nlp_DID) {
1151 case NameServer_DID:
1152 mbox->mbox_cmpl = lpfc_mbx_cmpl_ns_reg_login;
1153 break;
1154 case FDMI_DID:
1155 mbox->mbox_cmpl = lpfc_mbx_cmpl_fdmi_reg_login;
1156 break;
1157 default:
1158 ndlp->nlp_flag |= NLP_REG_LOGIN_SEND;
1159 mbox->mbox_cmpl = lpfc_mbx_cmpl_reg_login;
1160 }
1161 mbox->context2 = lpfc_nlp_get(ndlp);
1162 mbox->vport = vport;
1163 if (lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT)
1164 != MBX_NOT_FINISHED) {
1165 lpfc_nlp_set_state(vport, ndlp,
1166 NLP_STE_REG_LOGIN_ISSUE);
1167 return ndlp->nlp_state;
1168 }
1169 if (ndlp->nlp_flag & NLP_REG_LOGIN_SEND)
1170 ndlp->nlp_flag &= ~NLP_REG_LOGIN_SEND;
1171 /* decrement node reference count to the failed mbox
1172 * command
1173 */
1174 lpfc_nlp_put(ndlp);
1175 mp = (struct lpfc_dmabuf *) mbox->context1;
1176 lpfc_mbuf_free(phba, mp->virt, mp->phys);
1177 kfree(mp);
1178 mempool_free(mbox, phba->mbox_mem_pool);
1179
1180 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
1181 "0134 PLOGI: cannot issue reg_login "
1182 "Data: x%x x%x x%x x%x\n",
1183 ndlp->nlp_DID, ndlp->nlp_state,
1184 ndlp->nlp_flag, ndlp->nlp_rpi);
1185 } else {
1186 mempool_free(mbox, phba->mbox_mem_pool);
1187
1188 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
1189 "0135 PLOGI: cannot format reg_login "
1190 "Data: x%x x%x x%x x%x\n",
1191 ndlp->nlp_DID, ndlp->nlp_state,
1192 ndlp->nlp_flag, ndlp->nlp_rpi);
1193 }
1194
1195
1196 out:
1197 if (ndlp->nlp_DID == NameServer_DID) {
1198 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
1199 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
1200 "0261 Cannot Register NameServer login\n");
1201 }
1202
1203 /*
1204 ** In case the node reference counter does not go to zero, ensure that
1205 ** the stale state for the node is not processed.
1206 */
1207
1208 ndlp->nlp_prev_state = ndlp->nlp_state;
1209 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1210 spin_lock_irq(shost->host_lock);
1211 ndlp->nlp_flag |= NLP_DEFER_RM;
1212 spin_unlock_irq(shost->host_lock);
1213 return NLP_STE_FREED_NODE;
1214 }
1215
1216 static uint32_t
lpfc_cmpl_logo_plogi_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1217 lpfc_cmpl_logo_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1218 void *arg, uint32_t evt)
1219 {
1220 return ndlp->nlp_state;
1221 }
1222
1223 static uint32_t
lpfc_cmpl_reglogin_plogi_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1224 lpfc_cmpl_reglogin_plogi_issue(struct lpfc_vport *vport,
1225 struct lpfc_nodelist *ndlp, void *arg, uint32_t evt)
1226 {
1227 struct lpfc_hba *phba;
1228 LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg;
1229 MAILBOX_t *mb = &pmb->u.mb;
1230 uint16_t rpi;
1231
1232 phba = vport->phba;
1233 /* Release the RPI */
1234 if (!(phba->pport->load_flag & FC_UNLOADING) &&
1235 !mb->mbxStatus) {
1236 rpi = pmb->u.mb.un.varWords[0];
1237 lpfc_release_rpi(phba, vport, rpi);
1238 }
1239 return ndlp->nlp_state;
1240 }
1241
1242 static uint32_t
lpfc_device_rm_plogi_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1243 lpfc_device_rm_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1244 void *arg, uint32_t evt)
1245 {
1246 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1247
1248 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1249 spin_lock_irq(shost->host_lock);
1250 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1251 spin_unlock_irq(shost->host_lock);
1252 return ndlp->nlp_state;
1253 } else {
1254 /* software abort outstanding PLOGI */
1255 lpfc_els_abort(vport->phba, ndlp);
1256
1257 lpfc_drop_node(vport, ndlp);
1258 return NLP_STE_FREED_NODE;
1259 }
1260 }
1261
1262 static uint32_t
lpfc_device_recov_plogi_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1263 lpfc_device_recov_plogi_issue(struct lpfc_vport *vport,
1264 struct lpfc_nodelist *ndlp,
1265 void *arg,
1266 uint32_t evt)
1267 {
1268 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1269 struct lpfc_hba *phba = vport->phba;
1270
1271 /* Don't do anything that will mess up processing of the
1272 * previous RSCN.
1273 */
1274 if (vport->fc_flag & FC_RSCN_DEFERRED)
1275 return ndlp->nlp_state;
1276
1277 /* software abort outstanding PLOGI */
1278 lpfc_els_abort(phba, ndlp);
1279
1280 ndlp->nlp_prev_state = NLP_STE_PLOGI_ISSUE;
1281 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1282 spin_lock_irq(shost->host_lock);
1283 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1284 spin_unlock_irq(shost->host_lock);
1285
1286 return ndlp->nlp_state;
1287 }
1288
1289 static uint32_t
lpfc_rcv_plogi_adisc_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1290 lpfc_rcv_plogi_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1291 void *arg, uint32_t evt)
1292 {
1293 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1294 struct lpfc_hba *phba = vport->phba;
1295 struct lpfc_iocbq *cmdiocb;
1296
1297 /* software abort outstanding ADISC */
1298 lpfc_els_abort(phba, ndlp);
1299
1300 cmdiocb = (struct lpfc_iocbq *) arg;
1301
1302 if (lpfc_rcv_plogi(vport, ndlp, cmdiocb)) {
1303 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1304 spin_lock_irq(shost->host_lock);
1305 ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
1306 spin_unlock_irq(shost->host_lock);
1307 if (vport->num_disc_nodes)
1308 lpfc_more_adisc(vport);
1309 }
1310 return ndlp->nlp_state;
1311 }
1312 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1313 lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
1314 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
1315
1316 return ndlp->nlp_state;
1317 }
1318
1319 static uint32_t
lpfc_rcv_prli_adisc_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1320 lpfc_rcv_prli_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1321 void *arg, uint32_t evt)
1322 {
1323 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1324
1325 lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1326 return ndlp->nlp_state;
1327 }
1328
1329 static uint32_t
lpfc_rcv_logo_adisc_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1330 lpfc_rcv_logo_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1331 void *arg, uint32_t evt)
1332 {
1333 struct lpfc_hba *phba = vport->phba;
1334 struct lpfc_iocbq *cmdiocb;
1335
1336 cmdiocb = (struct lpfc_iocbq *) arg;
1337
1338 /* software abort outstanding ADISC */
1339 lpfc_els_abort(phba, ndlp);
1340
1341 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1342 return ndlp->nlp_state;
1343 }
1344
1345 static uint32_t
lpfc_rcv_padisc_adisc_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1346 lpfc_rcv_padisc_adisc_issue(struct lpfc_vport *vport,
1347 struct lpfc_nodelist *ndlp,
1348 void *arg, uint32_t evt)
1349 {
1350 struct lpfc_iocbq *cmdiocb;
1351
1352 cmdiocb = (struct lpfc_iocbq *) arg;
1353
1354 lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1355 return ndlp->nlp_state;
1356 }
1357
1358 static uint32_t
lpfc_rcv_prlo_adisc_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1359 lpfc_rcv_prlo_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1360 void *arg, uint32_t evt)
1361 {
1362 struct lpfc_iocbq *cmdiocb;
1363
1364 cmdiocb = (struct lpfc_iocbq *) arg;
1365
1366 /* Treat like rcv logo */
1367 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_PRLO);
1368 return ndlp->nlp_state;
1369 }
1370
1371 static uint32_t
lpfc_cmpl_adisc_adisc_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1372 lpfc_cmpl_adisc_adisc_issue(struct lpfc_vport *vport,
1373 struct lpfc_nodelist *ndlp,
1374 void *arg, uint32_t evt)
1375 {
1376 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1377 struct lpfc_hba *phba = vport->phba;
1378 struct lpfc_iocbq *cmdiocb, *rspiocb;
1379 IOCB_t *irsp;
1380 ADISC *ap;
1381 int rc;
1382
1383 cmdiocb = (struct lpfc_iocbq *) arg;
1384 rspiocb = cmdiocb->context_un.rsp_iocb;
1385
1386 ap = (ADISC *)lpfc_check_elscmpl_iocb(phba, cmdiocb, rspiocb);
1387 irsp = &rspiocb->iocb;
1388
1389 if ((irsp->ulpStatus) ||
1390 (!lpfc_check_adisc(vport, ndlp, &ap->nodeName, &ap->portName))) {
1391 /* 1 sec timeout */
1392 mod_timer(&ndlp->nlp_delayfunc,
1393 jiffies + msecs_to_jiffies(1000));
1394 spin_lock_irq(shost->host_lock);
1395 ndlp->nlp_flag |= NLP_DELAY_TMO;
1396 spin_unlock_irq(shost->host_lock);
1397 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
1398
1399 memset(&ndlp->nlp_nodename, 0, sizeof(struct lpfc_name));
1400 memset(&ndlp->nlp_portname, 0, sizeof(struct lpfc_name));
1401
1402 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1403 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1404 lpfc_unreg_rpi(vport, ndlp);
1405 return ndlp->nlp_state;
1406 }
1407
1408 if (phba->sli_rev == LPFC_SLI_REV4) {
1409 rc = lpfc_sli4_resume_rpi(ndlp, NULL, NULL);
1410 if (rc) {
1411 /* Stay in state and retry. */
1412 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1413 return ndlp->nlp_state;
1414 }
1415 }
1416
1417 if (ndlp->nlp_type & NLP_FCP_TARGET) {
1418 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1419 lpfc_nlp_set_state(vport, ndlp, NLP_STE_MAPPED_NODE);
1420 } else {
1421 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1422 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1423 }
1424
1425 return ndlp->nlp_state;
1426 }
1427
1428 static uint32_t
lpfc_device_rm_adisc_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1429 lpfc_device_rm_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1430 void *arg, uint32_t evt)
1431 {
1432 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1433
1434 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1435 spin_lock_irq(shost->host_lock);
1436 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1437 spin_unlock_irq(shost->host_lock);
1438 return ndlp->nlp_state;
1439 } else {
1440 /* software abort outstanding ADISC */
1441 lpfc_els_abort(vport->phba, ndlp);
1442
1443 lpfc_drop_node(vport, ndlp);
1444 return NLP_STE_FREED_NODE;
1445 }
1446 }
1447
1448 static uint32_t
lpfc_device_recov_adisc_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1449 lpfc_device_recov_adisc_issue(struct lpfc_vport *vport,
1450 struct lpfc_nodelist *ndlp,
1451 void *arg,
1452 uint32_t evt)
1453 {
1454 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1455 struct lpfc_hba *phba = vport->phba;
1456
1457 /* Don't do anything that will mess up processing of the
1458 * previous RSCN.
1459 */
1460 if (vport->fc_flag & FC_RSCN_DEFERRED)
1461 return ndlp->nlp_state;
1462
1463 /* software abort outstanding ADISC */
1464 lpfc_els_abort(phba, ndlp);
1465
1466 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1467 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1468 spin_lock_irq(shost->host_lock);
1469 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1470 spin_unlock_irq(shost->host_lock);
1471 lpfc_disc_set_adisc(vport, ndlp);
1472 return ndlp->nlp_state;
1473 }
1474
1475 static uint32_t
lpfc_rcv_plogi_reglogin_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1476 lpfc_rcv_plogi_reglogin_issue(struct lpfc_vport *vport,
1477 struct lpfc_nodelist *ndlp,
1478 void *arg,
1479 uint32_t evt)
1480 {
1481 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1482
1483 lpfc_rcv_plogi(vport, ndlp, cmdiocb);
1484 return ndlp->nlp_state;
1485 }
1486
1487 static uint32_t
lpfc_rcv_prli_reglogin_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1488 lpfc_rcv_prli_reglogin_issue(struct lpfc_vport *vport,
1489 struct lpfc_nodelist *ndlp,
1490 void *arg,
1491 uint32_t evt)
1492 {
1493 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1494
1495 lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1496 return ndlp->nlp_state;
1497 }
1498
1499 static uint32_t
lpfc_rcv_logo_reglogin_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1500 lpfc_rcv_logo_reglogin_issue(struct lpfc_vport *vport,
1501 struct lpfc_nodelist *ndlp,
1502 void *arg,
1503 uint32_t evt)
1504 {
1505 struct lpfc_hba *phba = vport->phba;
1506 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1507 LPFC_MBOXQ_t *mb;
1508 LPFC_MBOXQ_t *nextmb;
1509 struct lpfc_dmabuf *mp;
1510
1511 cmdiocb = (struct lpfc_iocbq *) arg;
1512
1513 /* cleanup any ndlp on mbox q waiting for reglogin cmpl */
1514 if ((mb = phba->sli.mbox_active)) {
1515 if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) &&
1516 (ndlp == (struct lpfc_nodelist *) mb->context2)) {
1517 lpfc_nlp_put(ndlp);
1518 mb->context2 = NULL;
1519 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
1520 }
1521 }
1522
1523 spin_lock_irq(&phba->hbalock);
1524 list_for_each_entry_safe(mb, nextmb, &phba->sli.mboxq, list) {
1525 if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) &&
1526 (ndlp == (struct lpfc_nodelist *) mb->context2)) {
1527 mp = (struct lpfc_dmabuf *) (mb->context1);
1528 if (mp) {
1529 __lpfc_mbuf_free(phba, mp->virt, mp->phys);
1530 kfree(mp);
1531 }
1532 lpfc_nlp_put(ndlp);
1533 list_del(&mb->list);
1534 phba->sli.mboxq_cnt--;
1535 mempool_free(mb, phba->mbox_mem_pool);
1536 }
1537 }
1538 spin_unlock_irq(&phba->hbalock);
1539
1540 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1541 return ndlp->nlp_state;
1542 }
1543
1544 static uint32_t
lpfc_rcv_padisc_reglogin_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1545 lpfc_rcv_padisc_reglogin_issue(struct lpfc_vport *vport,
1546 struct lpfc_nodelist *ndlp,
1547 void *arg,
1548 uint32_t evt)
1549 {
1550 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1551
1552 lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1553 return ndlp->nlp_state;
1554 }
1555
1556 static uint32_t
lpfc_rcv_prlo_reglogin_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1557 lpfc_rcv_prlo_reglogin_issue(struct lpfc_vport *vport,
1558 struct lpfc_nodelist *ndlp,
1559 void *arg,
1560 uint32_t evt)
1561 {
1562 struct lpfc_iocbq *cmdiocb;
1563
1564 cmdiocb = (struct lpfc_iocbq *) arg;
1565 lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
1566 return ndlp->nlp_state;
1567 }
1568
1569 static uint32_t
lpfc_cmpl_reglogin_reglogin_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1570 lpfc_cmpl_reglogin_reglogin_issue(struct lpfc_vport *vport,
1571 struct lpfc_nodelist *ndlp,
1572 void *arg,
1573 uint32_t evt)
1574 {
1575 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1576 LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg;
1577 MAILBOX_t *mb = &pmb->u.mb;
1578 uint32_t did = mb->un.varWords[1];
1579
1580 if (mb->mbxStatus) {
1581 /* RegLogin failed */
1582 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
1583 "0246 RegLogin failed Data: x%x x%x x%x x%x "
1584 "x%x\n",
1585 did, mb->mbxStatus, vport->port_state,
1586 mb->un.varRegLogin.vpi,
1587 mb->un.varRegLogin.rpi);
1588 /*
1589 * If RegLogin failed due to lack of HBA resources do not
1590 * retry discovery.
1591 */
1592 if (mb->mbxStatus == MBXERR_RPI_FULL) {
1593 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1594 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1595 return ndlp->nlp_state;
1596 }
1597
1598 /* Put ndlp in npr state set plogi timer for 1 sec */
1599 mod_timer(&ndlp->nlp_delayfunc,
1600 jiffies + msecs_to_jiffies(1000 * 1));
1601 spin_lock_irq(shost->host_lock);
1602 ndlp->nlp_flag |= NLP_DELAY_TMO;
1603 spin_unlock_irq(shost->host_lock);
1604 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
1605
1606 lpfc_issue_els_logo(vport, ndlp, 0);
1607 return ndlp->nlp_state;
1608 }
1609
1610 /* SLI4 ports have preallocated logical rpis. */
1611 if (vport->phba->sli_rev < LPFC_SLI_REV4)
1612 ndlp->nlp_rpi = mb->un.varWords[0];
1613
1614 ndlp->nlp_flag |= NLP_RPI_REGISTERED;
1615
1616 /* Only if we are not a fabric nport do we issue PRLI */
1617 if (!(ndlp->nlp_type & NLP_FABRIC)) {
1618 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1619 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PRLI_ISSUE);
1620 lpfc_issue_els_prli(vport, ndlp, 0);
1621 } else {
1622 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1623 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1624 }
1625 return ndlp->nlp_state;
1626 }
1627
1628 static uint32_t
lpfc_device_rm_reglogin_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1629 lpfc_device_rm_reglogin_issue(struct lpfc_vport *vport,
1630 struct lpfc_nodelist *ndlp,
1631 void *arg,
1632 uint32_t evt)
1633 {
1634 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1635
1636 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1637 spin_lock_irq(shost->host_lock);
1638 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1639 spin_unlock_irq(shost->host_lock);
1640 return ndlp->nlp_state;
1641 } else {
1642 lpfc_drop_node(vport, ndlp);
1643 return NLP_STE_FREED_NODE;
1644 }
1645 }
1646
1647 static uint32_t
lpfc_device_recov_reglogin_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1648 lpfc_device_recov_reglogin_issue(struct lpfc_vport *vport,
1649 struct lpfc_nodelist *ndlp,
1650 void *arg,
1651 uint32_t evt)
1652 {
1653 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1654
1655 /* Don't do anything that will mess up processing of the
1656 * previous RSCN.
1657 */
1658 if (vport->fc_flag & FC_RSCN_DEFERRED)
1659 return ndlp->nlp_state;
1660
1661 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1662 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1663 spin_lock_irq(shost->host_lock);
1664 ndlp->nlp_flag |= NLP_IGNR_REG_CMPL;
1665 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1666 spin_unlock_irq(shost->host_lock);
1667 lpfc_disc_set_adisc(vport, ndlp);
1668 return ndlp->nlp_state;
1669 }
1670
1671 static uint32_t
lpfc_rcv_plogi_prli_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1672 lpfc_rcv_plogi_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1673 void *arg, uint32_t evt)
1674 {
1675 struct lpfc_iocbq *cmdiocb;
1676
1677 cmdiocb = (struct lpfc_iocbq *) arg;
1678
1679 lpfc_rcv_plogi(vport, ndlp, cmdiocb);
1680 return ndlp->nlp_state;
1681 }
1682
1683 static uint32_t
lpfc_rcv_prli_prli_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1684 lpfc_rcv_prli_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1685 void *arg, uint32_t evt)
1686 {
1687 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1688
1689 lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1690 return ndlp->nlp_state;
1691 }
1692
1693 static uint32_t
lpfc_rcv_logo_prli_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1694 lpfc_rcv_logo_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1695 void *arg, uint32_t evt)
1696 {
1697 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1698
1699 /* Software abort outstanding PRLI before sending acc */
1700 lpfc_els_abort(vport->phba, ndlp);
1701
1702 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1703 return ndlp->nlp_state;
1704 }
1705
1706 static uint32_t
lpfc_rcv_padisc_prli_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1707 lpfc_rcv_padisc_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1708 void *arg, uint32_t evt)
1709 {
1710 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1711
1712 lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1713 return ndlp->nlp_state;
1714 }
1715
1716 /* This routine is envoked when we rcv a PRLO request from a nport
1717 * we are logged into. We should send back a PRLO rsp setting the
1718 * appropriate bits.
1719 * NEXT STATE = PRLI_ISSUE
1720 */
1721 static uint32_t
lpfc_rcv_prlo_prli_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1722 lpfc_rcv_prlo_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1723 void *arg, uint32_t evt)
1724 {
1725 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1726
1727 lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
1728 return ndlp->nlp_state;
1729 }
1730
1731 static uint32_t
lpfc_cmpl_prli_prli_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1732 lpfc_cmpl_prli_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1733 void *arg, uint32_t evt)
1734 {
1735 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1736 struct lpfc_iocbq *cmdiocb, *rspiocb;
1737 struct lpfc_hba *phba = vport->phba;
1738 IOCB_t *irsp;
1739 PRLI *npr;
1740
1741 cmdiocb = (struct lpfc_iocbq *) arg;
1742 rspiocb = cmdiocb->context_un.rsp_iocb;
1743 npr = (PRLI *)lpfc_check_elscmpl_iocb(phba, cmdiocb, rspiocb);
1744
1745 irsp = &rspiocb->iocb;
1746 if (irsp->ulpStatus) {
1747 if ((vport->port_type == LPFC_NPIV_PORT) &&
1748 vport->cfg_restrict_login) {
1749 goto out;
1750 }
1751 ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
1752 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1753 return ndlp->nlp_state;
1754 }
1755
1756 /* Check out PRLI rsp */
1757 ndlp->nlp_type &= ~(NLP_FCP_TARGET | NLP_FCP_INITIATOR);
1758 ndlp->nlp_fcp_info &= ~NLP_FCP_2_DEVICE;
1759 ndlp->nlp_flag &= ~NLP_FIRSTBURST;
1760 if ((npr->acceptRspCode == PRLI_REQ_EXECUTED) &&
1761 (npr->prliType == PRLI_FCP_TYPE)) {
1762 if (npr->initiatorFunc)
1763 ndlp->nlp_type |= NLP_FCP_INITIATOR;
1764 if (npr->targetFunc) {
1765 ndlp->nlp_type |= NLP_FCP_TARGET;
1766 if (npr->writeXferRdyDis)
1767 ndlp->nlp_flag |= NLP_FIRSTBURST;
1768 }
1769 if (npr->Retry)
1770 ndlp->nlp_fcp_info |= NLP_FCP_2_DEVICE;
1771 }
1772 if (!(ndlp->nlp_type & NLP_FCP_TARGET) &&
1773 (vport->port_type == LPFC_NPIV_PORT) &&
1774 vport->cfg_restrict_login) {
1775 out:
1776 spin_lock_irq(shost->host_lock);
1777 ndlp->nlp_flag |= NLP_TARGET_REMOVE;
1778 spin_unlock_irq(shost->host_lock);
1779 lpfc_issue_els_logo(vport, ndlp, 0);
1780
1781 ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
1782 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1783 return ndlp->nlp_state;
1784 }
1785
1786 ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
1787 if (ndlp->nlp_type & NLP_FCP_TARGET)
1788 lpfc_nlp_set_state(vport, ndlp, NLP_STE_MAPPED_NODE);
1789 else
1790 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1791 return ndlp->nlp_state;
1792 }
1793
1794 /*! lpfc_device_rm_prli_issue
1795 *
1796 * \pre
1797 * \post
1798 * \param phba
1799 * \param ndlp
1800 * \param arg
1801 * \param evt
1802 * \return uint32_t
1803 *
1804 * \b Description:
1805 * This routine is envoked when we a request to remove a nport we are in the
1806 * process of PRLIing. We should software abort outstanding prli, unreg
1807 * login, send a logout. We will change node state to UNUSED_NODE, put it
1808 * on plogi list so it can be freed when LOGO completes.
1809 *
1810 */
1811
1812 static uint32_t
lpfc_device_rm_prli_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1813 lpfc_device_rm_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1814 void *arg, uint32_t evt)
1815 {
1816 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1817
1818 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1819 spin_lock_irq(shost->host_lock);
1820 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1821 spin_unlock_irq(shost->host_lock);
1822 return ndlp->nlp_state;
1823 } else {
1824 /* software abort outstanding PLOGI */
1825 lpfc_els_abort(vport->phba, ndlp);
1826
1827 lpfc_drop_node(vport, ndlp);
1828 return NLP_STE_FREED_NODE;
1829 }
1830 }
1831
1832
1833 /*! lpfc_device_recov_prli_issue
1834 *
1835 * \pre
1836 * \post
1837 * \param phba
1838 * \param ndlp
1839 * \param arg
1840 * \param evt
1841 * \return uint32_t
1842 *
1843 * \b Description:
1844 * The routine is envoked when the state of a device is unknown, like
1845 * during a link down. We should remove the nodelist entry from the
1846 * unmapped list, issue a UNREG_LOGIN, do a software abort of the
1847 * outstanding PRLI command, then free the node entry.
1848 */
1849 static uint32_t
lpfc_device_recov_prli_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1850 lpfc_device_recov_prli_issue(struct lpfc_vport *vport,
1851 struct lpfc_nodelist *ndlp,
1852 void *arg,
1853 uint32_t evt)
1854 {
1855 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1856 struct lpfc_hba *phba = vport->phba;
1857
1858 /* Don't do anything that will mess up processing of the
1859 * previous RSCN.
1860 */
1861 if (vport->fc_flag & FC_RSCN_DEFERRED)
1862 return ndlp->nlp_state;
1863
1864 /* software abort outstanding PRLI */
1865 lpfc_els_abort(phba, ndlp);
1866
1867 ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
1868 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1869 spin_lock_irq(shost->host_lock);
1870 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1871 spin_unlock_irq(shost->host_lock);
1872 lpfc_disc_set_adisc(vport, ndlp);
1873 return ndlp->nlp_state;
1874 }
1875
1876 static uint32_t
lpfc_rcv_plogi_logo_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1877 lpfc_rcv_plogi_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1878 void *arg, uint32_t evt)
1879 {
1880 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *)arg;
1881 struct ls_rjt stat;
1882
1883 memset(&stat, 0, sizeof(struct ls_rjt));
1884 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
1885 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
1886 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
1887 return ndlp->nlp_state;
1888 }
1889
1890 static uint32_t
lpfc_rcv_prli_logo_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1891 lpfc_rcv_prli_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1892 void *arg, uint32_t evt)
1893 {
1894 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *)arg;
1895 struct ls_rjt stat;
1896
1897 memset(&stat, 0, sizeof(struct ls_rjt));
1898 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
1899 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
1900 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
1901 return ndlp->nlp_state;
1902 }
1903
1904 static uint32_t
lpfc_rcv_logo_logo_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1905 lpfc_rcv_logo_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1906 void *arg, uint32_t evt)
1907 {
1908 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1909 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *)arg;
1910
1911 spin_lock_irq(shost->host_lock);
1912 ndlp->nlp_flag |= NLP_LOGO_ACC;
1913 spin_unlock_irq(shost->host_lock);
1914 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
1915 return ndlp->nlp_state;
1916 }
1917
1918 static uint32_t
lpfc_rcv_padisc_logo_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1919 lpfc_rcv_padisc_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1920 void *arg, uint32_t evt)
1921 {
1922 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *)arg;
1923 struct ls_rjt stat;
1924
1925 memset(&stat, 0, sizeof(struct ls_rjt));
1926 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
1927 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
1928 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
1929 return ndlp->nlp_state;
1930 }
1931
1932 static uint32_t
lpfc_rcv_prlo_logo_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1933 lpfc_rcv_prlo_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1934 void *arg, uint32_t evt)
1935 {
1936 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *)arg;
1937 struct ls_rjt stat;
1938
1939 memset(&stat, 0, sizeof(struct ls_rjt));
1940 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
1941 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
1942 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
1943 return ndlp->nlp_state;
1944 }
1945
1946 static uint32_t
lpfc_cmpl_logo_logo_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1947 lpfc_cmpl_logo_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1948 void *arg, uint32_t evt)
1949 {
1950 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1951
1952 ndlp->nlp_prev_state = NLP_STE_LOGO_ISSUE;
1953 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1954 spin_lock_irq(shost->host_lock);
1955 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1956 spin_unlock_irq(shost->host_lock);
1957 lpfc_disc_set_adisc(vport, ndlp);
1958 return ndlp->nlp_state;
1959 }
1960
1961 static uint32_t
lpfc_device_rm_logo_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1962 lpfc_device_rm_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1963 void *arg, uint32_t evt)
1964 {
1965 /*
1966 * Take no action. If a LOGO is outstanding, then possibly DevLoss has
1967 * timed out and is calling for Device Remove. In this case, the LOGO
1968 * must be allowed to complete in state LOGO_ISSUE so that the rpi
1969 * and other NLP flags are correctly cleaned up.
1970 */
1971 return ndlp->nlp_state;
1972 }
1973
1974 static uint32_t
lpfc_device_recov_logo_issue(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1975 lpfc_device_recov_logo_issue(struct lpfc_vport *vport,
1976 struct lpfc_nodelist *ndlp,
1977 void *arg, uint32_t evt)
1978 {
1979 /*
1980 * Device Recovery events have no meaning for a node with a LOGO
1981 * outstanding. The LOGO has to complete first and handle the
1982 * node from that point.
1983 */
1984 return ndlp->nlp_state;
1985 }
1986
1987 static uint32_t
lpfc_rcv_plogi_unmap_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1988 lpfc_rcv_plogi_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1989 void *arg, uint32_t evt)
1990 {
1991 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1992
1993 lpfc_rcv_plogi(vport, ndlp, cmdiocb);
1994 return ndlp->nlp_state;
1995 }
1996
1997 static uint32_t
lpfc_rcv_prli_unmap_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)1998 lpfc_rcv_prli_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1999 void *arg, uint32_t evt)
2000 {
2001 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2002
2003 lpfc_rcv_prli(vport, ndlp, cmdiocb);
2004 lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
2005 return ndlp->nlp_state;
2006 }
2007
2008 static uint32_t
lpfc_rcv_logo_unmap_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2009 lpfc_rcv_logo_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2010 void *arg, uint32_t evt)
2011 {
2012 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2013
2014 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
2015 return ndlp->nlp_state;
2016 }
2017
2018 static uint32_t
lpfc_rcv_padisc_unmap_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2019 lpfc_rcv_padisc_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2020 void *arg, uint32_t evt)
2021 {
2022 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2023
2024 lpfc_rcv_padisc(vport, ndlp, cmdiocb);
2025 return ndlp->nlp_state;
2026 }
2027
2028 static uint32_t
lpfc_rcv_prlo_unmap_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2029 lpfc_rcv_prlo_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2030 void *arg, uint32_t evt)
2031 {
2032 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2033
2034 lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
2035 return ndlp->nlp_state;
2036 }
2037
2038 static uint32_t
lpfc_device_recov_unmap_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2039 lpfc_device_recov_unmap_node(struct lpfc_vport *vport,
2040 struct lpfc_nodelist *ndlp,
2041 void *arg,
2042 uint32_t evt)
2043 {
2044 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2045
2046 ndlp->nlp_prev_state = NLP_STE_UNMAPPED_NODE;
2047 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
2048 spin_lock_irq(shost->host_lock);
2049 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
2050 spin_unlock_irq(shost->host_lock);
2051 lpfc_disc_set_adisc(vport, ndlp);
2052
2053 return ndlp->nlp_state;
2054 }
2055
2056 static uint32_t
lpfc_rcv_plogi_mapped_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2057 lpfc_rcv_plogi_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2058 void *arg, uint32_t evt)
2059 {
2060 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2061
2062 lpfc_rcv_plogi(vport, ndlp, cmdiocb);
2063 return ndlp->nlp_state;
2064 }
2065
2066 static uint32_t
lpfc_rcv_prli_mapped_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2067 lpfc_rcv_prli_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2068 void *arg, uint32_t evt)
2069 {
2070 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2071
2072 lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
2073 return ndlp->nlp_state;
2074 }
2075
2076 static uint32_t
lpfc_rcv_logo_mapped_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2077 lpfc_rcv_logo_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2078 void *arg, uint32_t evt)
2079 {
2080 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2081
2082 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
2083 return ndlp->nlp_state;
2084 }
2085
2086 static uint32_t
lpfc_rcv_padisc_mapped_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2087 lpfc_rcv_padisc_mapped_node(struct lpfc_vport *vport,
2088 struct lpfc_nodelist *ndlp,
2089 void *arg, uint32_t evt)
2090 {
2091 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2092
2093 lpfc_rcv_padisc(vport, ndlp, cmdiocb);
2094 return ndlp->nlp_state;
2095 }
2096
2097 static uint32_t
lpfc_rcv_prlo_mapped_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2098 lpfc_rcv_prlo_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2099 void *arg, uint32_t evt)
2100 {
2101 struct lpfc_hba *phba = vport->phba;
2102 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2103
2104 /* flush the target */
2105 lpfc_sli_abort_iocb(vport, &phba->sli.ring[phba->sli.fcp_ring],
2106 ndlp->nlp_sid, 0, LPFC_CTX_TGT);
2107
2108 /* Treat like rcv logo */
2109 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_PRLO);
2110 return ndlp->nlp_state;
2111 }
2112
2113 static uint32_t
lpfc_device_recov_mapped_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2114 lpfc_device_recov_mapped_node(struct lpfc_vport *vport,
2115 struct lpfc_nodelist *ndlp,
2116 void *arg,
2117 uint32_t evt)
2118 {
2119 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2120
2121 ndlp->nlp_prev_state = NLP_STE_MAPPED_NODE;
2122 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
2123 spin_lock_irq(shost->host_lock);
2124 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
2125 spin_unlock_irq(shost->host_lock);
2126 lpfc_disc_set_adisc(vport, ndlp);
2127 return ndlp->nlp_state;
2128 }
2129
2130 static uint32_t
lpfc_rcv_plogi_npr_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2131 lpfc_rcv_plogi_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2132 void *arg, uint32_t evt)
2133 {
2134 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2135 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2136
2137 /* Ignore PLOGI if we have an outstanding LOGO */
2138 if (ndlp->nlp_flag & (NLP_LOGO_SND | NLP_LOGO_ACC))
2139 return ndlp->nlp_state;
2140 if (lpfc_rcv_plogi(vport, ndlp, cmdiocb)) {
2141 lpfc_cancel_retry_delay_tmo(vport, ndlp);
2142 spin_lock_irq(shost->host_lock);
2143 ndlp->nlp_flag &= ~(NLP_NPR_ADISC | NLP_NPR_2B_DISC);
2144 spin_unlock_irq(shost->host_lock);
2145 } else if (!(ndlp->nlp_flag & NLP_NPR_2B_DISC)) {
2146 /* send PLOGI immediately, move to PLOGI issue state */
2147 if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) {
2148 ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
2149 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
2150 lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
2151 }
2152 }
2153 return ndlp->nlp_state;
2154 }
2155
2156 static uint32_t
lpfc_rcv_prli_npr_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2157 lpfc_rcv_prli_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2158 void *arg, uint32_t evt)
2159 {
2160 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2161 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2162 struct ls_rjt stat;
2163
2164 memset(&stat, 0, sizeof (struct ls_rjt));
2165 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
2166 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
2167 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
2168
2169 if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) {
2170 if (ndlp->nlp_flag & NLP_NPR_ADISC) {
2171 spin_lock_irq(shost->host_lock);
2172 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
2173 ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
2174 spin_unlock_irq(shost->host_lock);
2175 lpfc_nlp_set_state(vport, ndlp, NLP_STE_ADISC_ISSUE);
2176 lpfc_issue_els_adisc(vport, ndlp, 0);
2177 } else {
2178 ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
2179 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
2180 lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
2181 }
2182 }
2183 return ndlp->nlp_state;
2184 }
2185
2186 static uint32_t
lpfc_rcv_logo_npr_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2187 lpfc_rcv_logo_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2188 void *arg, uint32_t evt)
2189 {
2190 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2191
2192 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
2193 return ndlp->nlp_state;
2194 }
2195
2196 static uint32_t
lpfc_rcv_padisc_npr_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2197 lpfc_rcv_padisc_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2198 void *arg, uint32_t evt)
2199 {
2200 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2201
2202 lpfc_rcv_padisc(vport, ndlp, cmdiocb);
2203 /*
2204 * Do not start discovery if discovery is about to start
2205 * or discovery in progress for this node. Starting discovery
2206 * here will affect the counting of discovery threads.
2207 */
2208 if (!(ndlp->nlp_flag & NLP_DELAY_TMO) &&
2209 !(ndlp->nlp_flag & NLP_NPR_2B_DISC)) {
2210 if (ndlp->nlp_flag & NLP_NPR_ADISC) {
2211 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
2212 ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
2213 lpfc_nlp_set_state(vport, ndlp, NLP_STE_ADISC_ISSUE);
2214 lpfc_issue_els_adisc(vport, ndlp, 0);
2215 } else {
2216 ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
2217 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
2218 lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
2219 }
2220 }
2221 return ndlp->nlp_state;
2222 }
2223
2224 static uint32_t
lpfc_rcv_prlo_npr_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2225 lpfc_rcv_prlo_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2226 void *arg, uint32_t evt)
2227 {
2228 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2229 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2230
2231 spin_lock_irq(shost->host_lock);
2232 ndlp->nlp_flag |= NLP_LOGO_ACC;
2233 spin_unlock_irq(shost->host_lock);
2234
2235 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
2236
2237 if ((ndlp->nlp_flag & NLP_DELAY_TMO) == 0) {
2238 mod_timer(&ndlp->nlp_delayfunc,
2239 jiffies + msecs_to_jiffies(1000 * 1));
2240 spin_lock_irq(shost->host_lock);
2241 ndlp->nlp_flag |= NLP_DELAY_TMO;
2242 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
2243 spin_unlock_irq(shost->host_lock);
2244 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
2245 } else {
2246 spin_lock_irq(shost->host_lock);
2247 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
2248 spin_unlock_irq(shost->host_lock);
2249 }
2250 return ndlp->nlp_state;
2251 }
2252
2253 static uint32_t
lpfc_cmpl_plogi_npr_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2254 lpfc_cmpl_plogi_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2255 void *arg, uint32_t evt)
2256 {
2257 struct lpfc_iocbq *cmdiocb, *rspiocb;
2258 IOCB_t *irsp;
2259 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2260
2261 cmdiocb = (struct lpfc_iocbq *) arg;
2262 rspiocb = cmdiocb->context_un.rsp_iocb;
2263
2264 irsp = &rspiocb->iocb;
2265 if (irsp->ulpStatus) {
2266 spin_lock_irq(shost->host_lock);
2267 ndlp->nlp_flag |= NLP_DEFER_RM;
2268 spin_unlock_irq(shost->host_lock);
2269 return NLP_STE_FREED_NODE;
2270 }
2271 return ndlp->nlp_state;
2272 }
2273
2274 static uint32_t
lpfc_cmpl_prli_npr_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2275 lpfc_cmpl_prli_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2276 void *arg, uint32_t evt)
2277 {
2278 struct lpfc_iocbq *cmdiocb, *rspiocb;
2279 IOCB_t *irsp;
2280
2281 cmdiocb = (struct lpfc_iocbq *) arg;
2282 rspiocb = cmdiocb->context_un.rsp_iocb;
2283
2284 irsp = &rspiocb->iocb;
2285 if (irsp->ulpStatus && (ndlp->nlp_flag & NLP_NODEV_REMOVE)) {
2286 lpfc_drop_node(vport, ndlp);
2287 return NLP_STE_FREED_NODE;
2288 }
2289 return ndlp->nlp_state;
2290 }
2291
2292 static uint32_t
lpfc_cmpl_logo_npr_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2293 lpfc_cmpl_logo_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2294 void *arg, uint32_t evt)
2295 {
2296 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2297
2298 /* For the fabric port just clear the fc flags. */
2299 if (ndlp->nlp_DID == Fabric_DID) {
2300 spin_lock_irq(shost->host_lock);
2301 vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP);
2302 spin_unlock_irq(shost->host_lock);
2303 }
2304 lpfc_unreg_rpi(vport, ndlp);
2305 return ndlp->nlp_state;
2306 }
2307
2308 static uint32_t
lpfc_cmpl_adisc_npr_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2309 lpfc_cmpl_adisc_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2310 void *arg, uint32_t evt)
2311 {
2312 struct lpfc_iocbq *cmdiocb, *rspiocb;
2313 IOCB_t *irsp;
2314
2315 cmdiocb = (struct lpfc_iocbq *) arg;
2316 rspiocb = cmdiocb->context_un.rsp_iocb;
2317
2318 irsp = &rspiocb->iocb;
2319 if (irsp->ulpStatus && (ndlp->nlp_flag & NLP_NODEV_REMOVE)) {
2320 lpfc_drop_node(vport, ndlp);
2321 return NLP_STE_FREED_NODE;
2322 }
2323 return ndlp->nlp_state;
2324 }
2325
2326 static uint32_t
lpfc_cmpl_reglogin_npr_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2327 lpfc_cmpl_reglogin_npr_node(struct lpfc_vport *vport,
2328 struct lpfc_nodelist *ndlp,
2329 void *arg, uint32_t evt)
2330 {
2331 LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg;
2332 MAILBOX_t *mb = &pmb->u.mb;
2333
2334 if (!mb->mbxStatus) {
2335 /* SLI4 ports have preallocated logical rpis. */
2336 if (vport->phba->sli_rev < LPFC_SLI_REV4)
2337 ndlp->nlp_rpi = mb->un.varWords[0];
2338 ndlp->nlp_flag |= NLP_RPI_REGISTERED;
2339 if (ndlp->nlp_flag & NLP_LOGO_ACC) {
2340 lpfc_unreg_rpi(vport, ndlp);
2341 }
2342 } else {
2343 if (ndlp->nlp_flag & NLP_NODEV_REMOVE) {
2344 lpfc_drop_node(vport, ndlp);
2345 return NLP_STE_FREED_NODE;
2346 }
2347 }
2348 return ndlp->nlp_state;
2349 }
2350
2351 static uint32_t
lpfc_device_rm_npr_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2352 lpfc_device_rm_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2353 void *arg, uint32_t evt)
2354 {
2355 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2356
2357 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
2358 spin_lock_irq(shost->host_lock);
2359 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
2360 spin_unlock_irq(shost->host_lock);
2361 return ndlp->nlp_state;
2362 }
2363 lpfc_drop_node(vport, ndlp);
2364 return NLP_STE_FREED_NODE;
2365 }
2366
2367 static uint32_t
lpfc_device_recov_npr_node(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2368 lpfc_device_recov_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2369 void *arg, uint32_t evt)
2370 {
2371 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2372
2373 /* Don't do anything that will mess up processing of the
2374 * previous RSCN.
2375 */
2376 if (vport->fc_flag & FC_RSCN_DEFERRED)
2377 return ndlp->nlp_state;
2378
2379 lpfc_cancel_retry_delay_tmo(vport, ndlp);
2380 spin_lock_irq(shost->host_lock);
2381 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
2382 spin_unlock_irq(shost->host_lock);
2383 return ndlp->nlp_state;
2384 }
2385
2386
2387 /* This next section defines the NPort Discovery State Machine */
2388
2389 /* There are 4 different double linked lists nodelist entries can reside on.
2390 * The plogi list and adisc list are used when Link Up discovery or RSCN
2391 * processing is needed. Each list holds the nodes that we will send PLOGI
2392 * or ADISC on. These lists will keep track of what nodes will be effected
2393 * by an RSCN, or a Link Up (Typically, all nodes are effected on Link Up).
2394 * The unmapped_list will contain all nodes that we have successfully logged
2395 * into at the Fibre Channel level. The mapped_list will contain all nodes
2396 * that are mapped FCP targets.
2397 */
2398 /*
2399 * The bind list is a list of undiscovered (potentially non-existent) nodes
2400 * that we have saved binding information on. This information is used when
2401 * nodes transition from the unmapped to the mapped list.
2402 */
2403 /* For UNUSED_NODE state, the node has just been allocated .
2404 * For PLOGI_ISSUE and REG_LOGIN_ISSUE, the node is on
2405 * the PLOGI list. For REG_LOGIN_COMPL, the node is taken off the PLOGI list
2406 * and put on the unmapped list. For ADISC processing, the node is taken off
2407 * the ADISC list and placed on either the mapped or unmapped list (depending
2408 * on its previous state). Once on the unmapped list, a PRLI is issued and the
2409 * state changed to PRLI_ISSUE. When the PRLI completion occurs, the state is
2410 * changed to UNMAPPED_NODE. If the completion indicates a mapped
2411 * node, the node is taken off the unmapped list. The binding list is checked
2412 * for a valid binding, or a binding is automatically assigned. If binding
2413 * assignment is unsuccessful, the node is left on the unmapped list. If
2414 * binding assignment is successful, the associated binding list entry (if
2415 * any) is removed, and the node is placed on the mapped list.
2416 */
2417 /*
2418 * For a Link Down, all nodes on the ADISC, PLOGI, unmapped or mapped
2419 * lists will receive a DEVICE_RECOVERY event. If the linkdown or devloss timers
2420 * expire, all effected nodes will receive a DEVICE_RM event.
2421 */
2422 /*
2423 * For a Link Up or RSCN, all nodes will move from the mapped / unmapped lists
2424 * to either the ADISC or PLOGI list. After a Nameserver query or ALPA loopmap
2425 * check, additional nodes may be added or removed (via DEVICE_RM) to / from
2426 * the PLOGI or ADISC lists. Once the PLOGI and ADISC lists are populated,
2427 * we will first process the ADISC list. 32 entries are processed initially and
2428 * ADISC is initited for each one. Completions / Events for each node are
2429 * funnelled thru the state machine. As each node finishes ADISC processing, it
2430 * starts ADISC for any nodes waiting for ADISC processing. If no nodes are
2431 * waiting, and the ADISC list count is identically 0, then we are done. For
2432 * Link Up discovery, since all nodes on the PLOGI list are UNREG_LOGIN'ed, we
2433 * can issue a CLEAR_LA and reenable Link Events. Next we will process the PLOGI
2434 * list. 32 entries are processed initially and PLOGI is initited for each one.
2435 * Completions / Events for each node are funnelled thru the state machine. As
2436 * each node finishes PLOGI processing, it starts PLOGI for any nodes waiting
2437 * for PLOGI processing. If no nodes are waiting, and the PLOGI list count is
2438 * indentically 0, then we are done. We have now completed discovery / RSCN
2439 * handling. Upon completion, ALL nodes should be on either the mapped or
2440 * unmapped lists.
2441 */
2442
2443 static uint32_t (*lpfc_disc_action[NLP_STE_MAX_STATE * NLP_EVT_MAX_EVENT])
2444 (struct lpfc_vport *, struct lpfc_nodelist *, void *, uint32_t) = {
2445 /* Action routine Event Current State */
2446 lpfc_rcv_plogi_unused_node, /* RCV_PLOGI UNUSED_NODE */
2447 lpfc_rcv_els_unused_node, /* RCV_PRLI */
2448 lpfc_rcv_logo_unused_node, /* RCV_LOGO */
2449 lpfc_rcv_els_unused_node, /* RCV_ADISC */
2450 lpfc_rcv_els_unused_node, /* RCV_PDISC */
2451 lpfc_rcv_els_unused_node, /* RCV_PRLO */
2452 lpfc_disc_illegal, /* CMPL_PLOGI */
2453 lpfc_disc_illegal, /* CMPL_PRLI */
2454 lpfc_cmpl_logo_unused_node, /* CMPL_LOGO */
2455 lpfc_disc_illegal, /* CMPL_ADISC */
2456 lpfc_disc_illegal, /* CMPL_REG_LOGIN */
2457 lpfc_device_rm_unused_node, /* DEVICE_RM */
2458 lpfc_device_recov_unused_node, /* DEVICE_RECOVERY */
2459
2460 lpfc_rcv_plogi_plogi_issue, /* RCV_PLOGI PLOGI_ISSUE */
2461 lpfc_rcv_prli_plogi_issue, /* RCV_PRLI */
2462 lpfc_rcv_logo_plogi_issue, /* RCV_LOGO */
2463 lpfc_rcv_els_plogi_issue, /* RCV_ADISC */
2464 lpfc_rcv_els_plogi_issue, /* RCV_PDISC */
2465 lpfc_rcv_els_plogi_issue, /* RCV_PRLO */
2466 lpfc_cmpl_plogi_plogi_issue, /* CMPL_PLOGI */
2467 lpfc_disc_illegal, /* CMPL_PRLI */
2468 lpfc_cmpl_logo_plogi_issue, /* CMPL_LOGO */
2469 lpfc_disc_illegal, /* CMPL_ADISC */
2470 lpfc_cmpl_reglogin_plogi_issue,/* CMPL_REG_LOGIN */
2471 lpfc_device_rm_plogi_issue, /* DEVICE_RM */
2472 lpfc_device_recov_plogi_issue, /* DEVICE_RECOVERY */
2473
2474 lpfc_rcv_plogi_adisc_issue, /* RCV_PLOGI ADISC_ISSUE */
2475 lpfc_rcv_prli_adisc_issue, /* RCV_PRLI */
2476 lpfc_rcv_logo_adisc_issue, /* RCV_LOGO */
2477 lpfc_rcv_padisc_adisc_issue, /* RCV_ADISC */
2478 lpfc_rcv_padisc_adisc_issue, /* RCV_PDISC */
2479 lpfc_rcv_prlo_adisc_issue, /* RCV_PRLO */
2480 lpfc_disc_illegal, /* CMPL_PLOGI */
2481 lpfc_disc_illegal, /* CMPL_PRLI */
2482 lpfc_disc_illegal, /* CMPL_LOGO */
2483 lpfc_cmpl_adisc_adisc_issue, /* CMPL_ADISC */
2484 lpfc_disc_illegal, /* CMPL_REG_LOGIN */
2485 lpfc_device_rm_adisc_issue, /* DEVICE_RM */
2486 lpfc_device_recov_adisc_issue, /* DEVICE_RECOVERY */
2487
2488 lpfc_rcv_plogi_reglogin_issue, /* RCV_PLOGI REG_LOGIN_ISSUE */
2489 lpfc_rcv_prli_reglogin_issue, /* RCV_PLOGI */
2490 lpfc_rcv_logo_reglogin_issue, /* RCV_LOGO */
2491 lpfc_rcv_padisc_reglogin_issue, /* RCV_ADISC */
2492 lpfc_rcv_padisc_reglogin_issue, /* RCV_PDISC */
2493 lpfc_rcv_prlo_reglogin_issue, /* RCV_PRLO */
2494 lpfc_cmpl_plogi_illegal, /* CMPL_PLOGI */
2495 lpfc_disc_illegal, /* CMPL_PRLI */
2496 lpfc_disc_illegal, /* CMPL_LOGO */
2497 lpfc_disc_illegal, /* CMPL_ADISC */
2498 lpfc_cmpl_reglogin_reglogin_issue,/* CMPL_REG_LOGIN */
2499 lpfc_device_rm_reglogin_issue, /* DEVICE_RM */
2500 lpfc_device_recov_reglogin_issue,/* DEVICE_RECOVERY */
2501
2502 lpfc_rcv_plogi_prli_issue, /* RCV_PLOGI PRLI_ISSUE */
2503 lpfc_rcv_prli_prli_issue, /* RCV_PRLI */
2504 lpfc_rcv_logo_prli_issue, /* RCV_LOGO */
2505 lpfc_rcv_padisc_prli_issue, /* RCV_ADISC */
2506 lpfc_rcv_padisc_prli_issue, /* RCV_PDISC */
2507 lpfc_rcv_prlo_prli_issue, /* RCV_PRLO */
2508 lpfc_cmpl_plogi_illegal, /* CMPL_PLOGI */
2509 lpfc_cmpl_prli_prli_issue, /* CMPL_PRLI */
2510 lpfc_disc_illegal, /* CMPL_LOGO */
2511 lpfc_disc_illegal, /* CMPL_ADISC */
2512 lpfc_disc_illegal, /* CMPL_REG_LOGIN */
2513 lpfc_device_rm_prli_issue, /* DEVICE_RM */
2514 lpfc_device_recov_prli_issue, /* DEVICE_RECOVERY */
2515
2516 lpfc_rcv_plogi_logo_issue, /* RCV_PLOGI LOGO_ISSUE */
2517 lpfc_rcv_prli_logo_issue, /* RCV_PRLI */
2518 lpfc_rcv_logo_logo_issue, /* RCV_LOGO */
2519 lpfc_rcv_padisc_logo_issue, /* RCV_ADISC */
2520 lpfc_rcv_padisc_logo_issue, /* RCV_PDISC */
2521 lpfc_rcv_prlo_logo_issue, /* RCV_PRLO */
2522 lpfc_cmpl_plogi_illegal, /* CMPL_PLOGI */
2523 lpfc_disc_illegal, /* CMPL_PRLI */
2524 lpfc_cmpl_logo_logo_issue, /* CMPL_LOGO */
2525 lpfc_disc_illegal, /* CMPL_ADISC */
2526 lpfc_disc_illegal, /* CMPL_REG_LOGIN */
2527 lpfc_device_rm_logo_issue, /* DEVICE_RM */
2528 lpfc_device_recov_logo_issue, /* DEVICE_RECOVERY */
2529
2530 lpfc_rcv_plogi_unmap_node, /* RCV_PLOGI UNMAPPED_NODE */
2531 lpfc_rcv_prli_unmap_node, /* RCV_PRLI */
2532 lpfc_rcv_logo_unmap_node, /* RCV_LOGO */
2533 lpfc_rcv_padisc_unmap_node, /* RCV_ADISC */
2534 lpfc_rcv_padisc_unmap_node, /* RCV_PDISC */
2535 lpfc_rcv_prlo_unmap_node, /* RCV_PRLO */
2536 lpfc_disc_illegal, /* CMPL_PLOGI */
2537 lpfc_disc_illegal, /* CMPL_PRLI */
2538 lpfc_disc_illegal, /* CMPL_LOGO */
2539 lpfc_disc_illegal, /* CMPL_ADISC */
2540 lpfc_disc_illegal, /* CMPL_REG_LOGIN */
2541 lpfc_disc_illegal, /* DEVICE_RM */
2542 lpfc_device_recov_unmap_node, /* DEVICE_RECOVERY */
2543
2544 lpfc_rcv_plogi_mapped_node, /* RCV_PLOGI MAPPED_NODE */
2545 lpfc_rcv_prli_mapped_node, /* RCV_PRLI */
2546 lpfc_rcv_logo_mapped_node, /* RCV_LOGO */
2547 lpfc_rcv_padisc_mapped_node, /* RCV_ADISC */
2548 lpfc_rcv_padisc_mapped_node, /* RCV_PDISC */
2549 lpfc_rcv_prlo_mapped_node, /* RCV_PRLO */
2550 lpfc_disc_illegal, /* CMPL_PLOGI */
2551 lpfc_disc_illegal, /* CMPL_PRLI */
2552 lpfc_disc_illegal, /* CMPL_LOGO */
2553 lpfc_disc_illegal, /* CMPL_ADISC */
2554 lpfc_disc_illegal, /* CMPL_REG_LOGIN */
2555 lpfc_disc_illegal, /* DEVICE_RM */
2556 lpfc_device_recov_mapped_node, /* DEVICE_RECOVERY */
2557
2558 lpfc_rcv_plogi_npr_node, /* RCV_PLOGI NPR_NODE */
2559 lpfc_rcv_prli_npr_node, /* RCV_PRLI */
2560 lpfc_rcv_logo_npr_node, /* RCV_LOGO */
2561 lpfc_rcv_padisc_npr_node, /* RCV_ADISC */
2562 lpfc_rcv_padisc_npr_node, /* RCV_PDISC */
2563 lpfc_rcv_prlo_npr_node, /* RCV_PRLO */
2564 lpfc_cmpl_plogi_npr_node, /* CMPL_PLOGI */
2565 lpfc_cmpl_prli_npr_node, /* CMPL_PRLI */
2566 lpfc_cmpl_logo_npr_node, /* CMPL_LOGO */
2567 lpfc_cmpl_adisc_npr_node, /* CMPL_ADISC */
2568 lpfc_cmpl_reglogin_npr_node, /* CMPL_REG_LOGIN */
2569 lpfc_device_rm_npr_node, /* DEVICE_RM */
2570 lpfc_device_recov_npr_node, /* DEVICE_RECOVERY */
2571 };
2572
2573 int
lpfc_disc_state_machine(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,void * arg,uint32_t evt)2574 lpfc_disc_state_machine(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2575 void *arg, uint32_t evt)
2576 {
2577 uint32_t cur_state, rc;
2578 uint32_t(*func) (struct lpfc_vport *, struct lpfc_nodelist *, void *,
2579 uint32_t);
2580 uint32_t got_ndlp = 0;
2581
2582 if (lpfc_nlp_get(ndlp))
2583 got_ndlp = 1;
2584
2585 cur_state = ndlp->nlp_state;
2586
2587 /* DSM in event <evt> on NPort <nlp_DID> in state <cur_state> */
2588 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
2589 "0211 DSM in event x%x on NPort x%x in "
2590 "state %d Data: x%x\n",
2591 evt, ndlp->nlp_DID, cur_state, ndlp->nlp_flag);
2592
2593 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_DSM,
2594 "DSM in: evt:%d ste:%d did:x%x",
2595 evt, cur_state, ndlp->nlp_DID);
2596
2597 func = lpfc_disc_action[(cur_state * NLP_EVT_MAX_EVENT) + evt];
2598 rc = (func) (vport, ndlp, arg, evt);
2599
2600 /* DSM out state <rc> on NPort <nlp_DID> */
2601 if (got_ndlp) {
2602 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
2603 "0212 DSM out state %d on NPort x%x Data: x%x\n",
2604 rc, ndlp->nlp_DID, ndlp->nlp_flag);
2605
2606 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_DSM,
2607 "DSM out: ste:%d did:x%x flg:x%x",
2608 rc, ndlp->nlp_DID, ndlp->nlp_flag);
2609 /* Decrement the ndlp reference count held for this function */
2610 lpfc_nlp_put(ndlp);
2611 } else {
2612 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
2613 "0213 DSM out state %d on NPort free\n", rc);
2614
2615 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_DSM,
2616 "DSM out: ste:%d did:x%x flg:x%x",
2617 rc, 0, 0);
2618 }
2619
2620 return rc;
2621 }
2622