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Committer: Michael Beasley <mike@snafu.setup>
[mikesnafu-overlay.git] / drivers / scsi / lpfc / lpfc_nportdisc.c
blobd513813f66975dfe59e09f8da95558f2e9661338
1 /*******************************************************************
2 * This file is part of the Emulex Linux Device Driver for *
3 * Fibre Channel Host Bus Adapters. *
4 * Copyright (C) 2004-2008 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/interrupt.h>
25
26 #include <scsi/scsi.h>
27 #include <scsi/scsi_device.h>
28 #include <scsi/scsi_host.h>
29 #include <scsi/scsi_transport_fc.h>
30
31 #include "lpfc_hw.h"
32 #include "lpfc_sli.h"
33 #include "lpfc_disc.h"
34 #include "lpfc_scsi.h"
35 #include "lpfc.h"
36 #include "lpfc_logmsg.h"
37 #include "lpfc_crtn.h"
38 #include "lpfc_vport.h"
39 #include "lpfc_debugfs.h"
40
41
42 /* Called to verify a rcv'ed ADISC was intended for us. */
43 static int
44 lpfc_check_adisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
45 struct lpfc_name *nn, struct lpfc_name *pn)
46 {
47 /* Compare the ADISC rsp WWNN / WWPN matches our internal node
48 * table entry for that node.
49 */
50 if (memcmp(nn, &ndlp->nlp_nodename, sizeof (struct lpfc_name)))
51 return 0;
52
53 if (memcmp(pn, &ndlp->nlp_portname, sizeof (struct lpfc_name)))
54 return 0;
55
56 /* we match, return success */
57 return 1;
58 }
59
60 int
61 lpfc_check_sparm(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
62 struct serv_parm * sp, uint32_t class)
63 {
64 volatile struct serv_parm *hsp = &vport->fc_sparam;
65 uint16_t hsp_value, ssp_value = 0;
66
67 /*
68 * The receive data field size and buffer-to-buffer receive data field
69 * size entries are 16 bits but are represented as two 8-bit fields in
70 * the driver data structure to account for rsvd bits and other control
71 * bits. Reconstruct and compare the fields as a 16-bit values before
72 * correcting the byte values.
73 */
74 if (sp->cls1.classValid) {
75 hsp_value = (hsp->cls1.rcvDataSizeMsb << 8) |
76 hsp->cls1.rcvDataSizeLsb;
77 ssp_value = (sp->cls1.rcvDataSizeMsb << 8) |
78 sp->cls1.rcvDataSizeLsb;
79 if (!ssp_value)
80 goto bad_service_param;
81 if (ssp_value > hsp_value) {
82 sp->cls1.rcvDataSizeLsb = hsp->cls1.rcvDataSizeLsb;
83 sp->cls1.rcvDataSizeMsb = hsp->cls1.rcvDataSizeMsb;
84 }
85 } else if (class == CLASS1) {
86 goto bad_service_param;
87 }
88
89 if (sp->cls2.classValid) {
90 hsp_value = (hsp->cls2.rcvDataSizeMsb << 8) |
91 hsp->cls2.rcvDataSizeLsb;
92 ssp_value = (sp->cls2.rcvDataSizeMsb << 8) |
93 sp->cls2.rcvDataSizeLsb;
94 if (!ssp_value)
95 goto bad_service_param;
96 if (ssp_value > hsp_value) {
97 sp->cls2.rcvDataSizeLsb = hsp->cls2.rcvDataSizeLsb;
98 sp->cls2.rcvDataSizeMsb = hsp->cls2.rcvDataSizeMsb;
99 }
100 } else if (class == CLASS2) {
101 goto bad_service_param;
102 }
103
104 if (sp->cls3.classValid) {
105 hsp_value = (hsp->cls3.rcvDataSizeMsb << 8) |
106 hsp->cls3.rcvDataSizeLsb;
107 ssp_value = (sp->cls3.rcvDataSizeMsb << 8) |
108 sp->cls3.rcvDataSizeLsb;
109 if (!ssp_value)
110 goto bad_service_param;
111 if (ssp_value > hsp_value) {
112 sp->cls3.rcvDataSizeLsb = hsp->cls3.rcvDataSizeLsb;
113 sp->cls3.rcvDataSizeMsb = hsp->cls3.rcvDataSizeMsb;
114 }
115 } else if (class == CLASS3) {
116 goto bad_service_param;
117 }
118
119 /*
120 * Preserve the upper four bits of the MSB from the PLOGI response.
121 * These bits contain the Buffer-to-Buffer State Change Number
122 * from the target and need to be passed to the FW.
123 */
124 hsp_value = (hsp->cmn.bbRcvSizeMsb << 8) | hsp->cmn.bbRcvSizeLsb;
125 ssp_value = (sp->cmn.bbRcvSizeMsb << 8) | sp->cmn.bbRcvSizeLsb;
126 if (ssp_value > hsp_value) {
127 sp->cmn.bbRcvSizeLsb = hsp->cmn.bbRcvSizeLsb;
128 sp->cmn.bbRcvSizeMsb = (sp->cmn.bbRcvSizeMsb & 0xF0) |
129 (hsp->cmn.bbRcvSizeMsb & 0x0F);
130 }
131
132 memcpy(&ndlp->nlp_nodename, &sp->nodeName, sizeof (struct lpfc_name));
133 memcpy(&ndlp->nlp_portname, &sp->portName, sizeof (struct lpfc_name));
134 return 1;
135 bad_service_param:
136 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
137 "0207 Device %x "
138 "(%02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x) sent "
139 "invalid service parameters. Ignoring device.\n",
140 ndlp->nlp_DID,
141 sp->nodeName.u.wwn[0], sp->nodeName.u.wwn[1],
142 sp->nodeName.u.wwn[2], sp->nodeName.u.wwn[3],
143 sp->nodeName.u.wwn[4], sp->nodeName.u.wwn[5],
144 sp->nodeName.u.wwn[6], sp->nodeName.u.wwn[7]);
145 return 0;
146 }
147
148 static void *
149 lpfc_check_elscmpl_iocb(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
150 struct lpfc_iocbq *rspiocb)
151 {
152 struct lpfc_dmabuf *pcmd, *prsp;
153 uint32_t *lp;
154 void *ptr = NULL;
155 IOCB_t *irsp;
156
157 irsp = &rspiocb->iocb;
158 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
159
160 /* For lpfc_els_abort, context2 could be zero'ed to delay
161 * freeing associated memory till after ABTS completes.
162 */
163 if (pcmd) {
164 prsp = list_get_first(&pcmd->list, struct lpfc_dmabuf,
165 list);
166 if (prsp) {
167 lp = (uint32_t *) prsp->virt;
168 ptr = (void *)((uint8_t *)lp + sizeof(uint32_t));
169 }
170 } else {
171 /* Force ulpStatus error since we are returning NULL ptr */
172 if (!(irsp->ulpStatus)) {
173 irsp->ulpStatus = IOSTAT_LOCAL_REJECT;
174 irsp->un.ulpWord[4] = IOERR_SLI_ABORTED;
175 }
176 ptr = NULL;
177 }
178 return ptr;
179 }
180
181
182 /*
183 * Free resources / clean up outstanding I/Os
184 * associated with a LPFC_NODELIST entry. This
185 * routine effectively results in a "software abort".
186 */
187 int
188 lpfc_els_abort(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
189 {
190 LIST_HEAD(completions);
191 struct lpfc_sli *psli = &phba->sli;
192 struct lpfc_sli_ring *pring = &psli->ring[LPFC_ELS_RING];
193 struct lpfc_iocbq *iocb, *next_iocb;
194 IOCB_t *cmd;
195
196 /* Abort outstanding I/O on NPort <nlp_DID> */
197 lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_DISCOVERY,
198 "0205 Abort outstanding I/O on NPort x%x "
199 "Data: x%x x%x x%x\n",
200 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
201 ndlp->nlp_rpi);
202
203 lpfc_fabric_abort_nport(ndlp);
204
205 /* First check the txq */
206 spin_lock_irq(&phba->hbalock);
207 list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) {
208 /* Check to see if iocb matches the nport we are looking for */
209 if (lpfc_check_sli_ndlp(phba, pring, iocb, ndlp)) {
210 /* It matches, so deque and call compl with anp error */
211 list_move_tail(&iocb->list, &completions);
212 pring->txq_cnt--;
213 }
214 }
215
216 /* Next check the txcmplq */
217 list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq, list) {
218 /* Check to see if iocb matches the nport we are looking for */
219 if (lpfc_check_sli_ndlp(phba, pring, iocb, ndlp)) {
220 lpfc_sli_issue_abort_iotag(phba, pring, iocb);
221 }
222 }
223 spin_unlock_irq(&phba->hbalock);
224
225 while (!list_empty(&completions)) {
226 iocb = list_get_first(&completions, struct lpfc_iocbq, list);
227 cmd = &iocb->iocb;
228 list_del_init(&iocb->list);
229
230 if (!iocb->iocb_cmpl)
231 lpfc_sli_release_iocbq(phba, iocb);
232 else {
233 cmd->ulpStatus = IOSTAT_LOCAL_REJECT;
234 cmd->un.ulpWord[4] = IOERR_SLI_ABORTED;
235 (iocb->iocb_cmpl) (phba, iocb, iocb);
236 }
237 }
238
239 /* If we are delaying issuing an ELS command, cancel it */
240 if (ndlp->nlp_flag & NLP_DELAY_TMO)
241 lpfc_cancel_retry_delay_tmo(phba->pport, ndlp);
242 return 0;
243 }
244
245 static int
246 lpfc_rcv_plogi(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
247 struct lpfc_iocbq *cmdiocb)
248 {
249 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
250 struct lpfc_hba *phba = vport->phba;
251 struct lpfc_dmabuf *pcmd;
252 struct lpfc_work_evt *evtp;
253 uint32_t *lp;
254 IOCB_t *icmd;
255 struct serv_parm *sp;
256 LPFC_MBOXQ_t *mbox;
257 struct ls_rjt stat;
258 int rc;
259
260 memset(&stat, 0, sizeof (struct ls_rjt));
261 if (vport->port_state <= LPFC_FLOGI) {
262 /* Before responding to PLOGI, check for pt2pt mode.
263 * If we are pt2pt, with an outstanding FLOGI, abort
264 * the FLOGI and resend it first.
265 */
266 if (vport->fc_flag & FC_PT2PT) {
267 lpfc_els_abort_flogi(phba);
268 if (!(vport->fc_flag & FC_PT2PT_PLOGI)) {
269 /* If the other side is supposed to initiate
270 * the PLOGI anyway, just ACC it now and
271 * move on with discovery.
272 */
273 phba->fc_edtov = FF_DEF_EDTOV;
274 phba->fc_ratov = FF_DEF_RATOV;
275 /* Start discovery - this should just do
276 CLEAR_LA */
277 lpfc_disc_start(vport);
278 } else
279 lpfc_initial_flogi(vport);
280 } else {
281 stat.un.b.lsRjtRsnCode = LSRJT_LOGICAL_BSY;
282 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
283 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb,
284 ndlp, NULL);
285 return 0;
286 }
287 }
288 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
289 lp = (uint32_t *) pcmd->virt;
290 sp = (struct serv_parm *) ((uint8_t *) lp + sizeof (uint32_t));
291 if (wwn_to_u64(sp->portName.u.wwn) == 0) {
292 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
293 "0140 PLOGI Reject: invalid nname\n");
294 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
295 stat.un.b.lsRjtRsnCodeExp = LSEXP_INVALID_PNAME;
296 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
297 NULL);
298 return 0;
299 }
300 if (wwn_to_u64(sp->nodeName.u.wwn) == 0) {
301 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
302 "0141 PLOGI Reject: invalid pname\n");
303 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
304 stat.un.b.lsRjtRsnCodeExp = LSEXP_INVALID_NNAME;
305 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
306 NULL);
307 return 0;
308 }
309 if ((lpfc_check_sparm(vport, ndlp, sp, CLASS3) == 0)) {
310 /* Reject this request because invalid parameters */
311 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
312 stat.un.b.lsRjtRsnCodeExp = LSEXP_SPARM_OPTIONS;
313 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
314 NULL);
315 return 0;
316 }
317 icmd = &cmdiocb->iocb;
318
319 /* PLOGI chkparm OK */
320 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
321 "0114 PLOGI chkparm OK Data: x%x x%x x%x x%x\n",
322 ndlp->nlp_DID, ndlp->nlp_state, ndlp->nlp_flag,
323 ndlp->nlp_rpi);
324
325 if (vport->cfg_fcp_class == 2 && sp->cls2.classValid)
326 ndlp->nlp_fcp_info |= CLASS2;
327 else
328 ndlp->nlp_fcp_info |= CLASS3;
329
330 ndlp->nlp_class_sup = 0;
331 if (sp->cls1.classValid)
332 ndlp->nlp_class_sup |= FC_COS_CLASS1;
333 if (sp->cls2.classValid)
334 ndlp->nlp_class_sup |= FC_COS_CLASS2;
335 if (sp->cls3.classValid)
336 ndlp->nlp_class_sup |= FC_COS_CLASS3;
337 if (sp->cls4.classValid)
338 ndlp->nlp_class_sup |= FC_COS_CLASS4;
339 ndlp->nlp_maxframe =
340 ((sp->cmn.bbRcvSizeMsb & 0x0F) << 8) | sp->cmn.bbRcvSizeLsb;
341
342 /* no need to reg_login if we are already in one of these states */
343 switch (ndlp->nlp_state) {
344 case NLP_STE_NPR_NODE:
345 if (!(ndlp->nlp_flag & NLP_NPR_ADISC))
346 break;
347 case NLP_STE_REG_LOGIN_ISSUE:
348 case NLP_STE_PRLI_ISSUE:
349 case NLP_STE_UNMAPPED_NODE:
350 case NLP_STE_MAPPED_NODE:
351 lpfc_els_rsp_acc(vport, ELS_CMD_PLOGI, cmdiocb, ndlp, NULL);
352 return 1;
353 }
354
355 if ((vport->fc_flag & FC_PT2PT) &&
356 !(vport->fc_flag & FC_PT2PT_PLOGI)) {
357 /* rcv'ed PLOGI decides what our NPortId will be */
358 vport->fc_myDID = icmd->un.rcvels.parmRo;
359 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
360 if (mbox == NULL)
361 goto out;
362 lpfc_config_link(phba, mbox);
363 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
364 mbox->vport = vport;
365 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
366 if (rc == MBX_NOT_FINISHED) {
367 mempool_free(mbox, phba->mbox_mem_pool);
368 goto out;
369 }
370
371 lpfc_can_disctmo(vport);
372 }
373 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
374 if (!mbox)
375 goto out;
376
377 rc = lpfc_reg_login(phba, vport->vpi, icmd->un.rcvels.remoteID,
378 (uint8_t *) sp, mbox, 0);
379 if (rc) {
380 mempool_free(mbox, phba->mbox_mem_pool);
381 goto out;
382 }
383
384 /* ACC PLOGI rsp command needs to execute first,
385 * queue this mbox command to be processed later.
386 */
387 mbox->mbox_cmpl = lpfc_mbx_cmpl_reg_login;
388 /*
389 * mbox->context2 = lpfc_nlp_get(ndlp) deferred until mailbox
390 * command issued in lpfc_cmpl_els_acc().
391 */
392 mbox->vport = vport;
393 spin_lock_irq(shost->host_lock);
394 ndlp->nlp_flag |= (NLP_ACC_REGLOGIN | NLP_RCV_PLOGI);
395 spin_unlock_irq(shost->host_lock);
396
397 /*
398 * If there is an outstanding PLOGI issued, abort it before
399 * sending ACC rsp for received PLOGI. If pending plogi
400 * is not canceled here, the plogi will be rejected by
401 * remote port and will be retried. On a configuration with
402 * single discovery thread, this will cause a huge delay in
403 * discovery. Also this will cause multiple state machines
404 * running in parallel for this node.
405 */
406 if (ndlp->nlp_state == NLP_STE_PLOGI_ISSUE) {
407 /* software abort outstanding PLOGI */
408 lpfc_els_abort(phba, ndlp);
409 }
410
411 if ((vport->port_type == LPFC_NPIV_PORT &&
412 vport->cfg_restrict_login)) {
413
414 /* In order to preserve RPIs, we want to cleanup
415 * the default RPI the firmware created to rcv
416 * this ELS request. The only way to do this is
417 * to register, then unregister the RPI.
418 */
419 spin_lock_irq(shost->host_lock);
420 ndlp->nlp_flag |= NLP_RM_DFLT_RPI;
421 spin_unlock_irq(shost->host_lock);
422 stat.un.b.lsRjtRsnCode = LSRJT_INVALID_CMD;
423 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
424 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb,
425 ndlp, mbox);
426 return 1;
427 }
428
429 /* If the remote NPort logs into us, before we can initiate
430 * discovery to them, cleanup the NPort from discovery accordingly.
431 */
432 if (ndlp->nlp_state == NLP_STE_NPR_NODE) {
433 spin_lock_irq(shost->host_lock);
434 ndlp->nlp_flag &= ~NLP_DELAY_TMO;
435 spin_unlock_irq(shost->host_lock);
436 del_timer_sync(&ndlp->nlp_delayfunc);
437 ndlp->nlp_last_elscmd = 0;
438
439 if (!list_empty(&ndlp->els_retry_evt.evt_listp)) {
440 list_del_init(&ndlp->els_retry_evt.evt_listp);
441 /* Decrement ndlp reference count held for the
442 * delayed retry
443 */
444 evtp = &ndlp->els_retry_evt;
445 lpfc_nlp_put((struct lpfc_nodelist *)evtp->evt_arg1);
446 }
447
448 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
449 spin_lock_irq(shost->host_lock);
450 ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
451 spin_unlock_irq(shost->host_lock);
452
453 if ((ndlp->nlp_flag & NLP_ADISC_SND) &&
454 (vport->num_disc_nodes)) {
455 /* Check to see if there are more
456 * ADISCs to be sent
457 */
458 lpfc_more_adisc(vport);
459
460 if ((vport->num_disc_nodes == 0) &&
461 (vport->fc_npr_cnt))
462 lpfc_els_disc_plogi(vport);
463
464 if (vport->num_disc_nodes == 0) {
465 spin_lock_irq(shost->host_lock);
466 vport->fc_flag &= ~FC_NDISC_ACTIVE;
467 spin_unlock_irq(shost->host_lock);
468 lpfc_can_disctmo(vport);
469 lpfc_end_rscn(vport);
470 }
471 }
472 else if (vport->num_disc_nodes) {
473 /* Check to see if there are more
474 * PLOGIs to be sent
475 */
476 lpfc_more_plogi(vport);
477
478 if (vport->num_disc_nodes == 0) {
479 spin_lock_irq(shost->host_lock);
480 vport->fc_flag &= ~FC_NDISC_ACTIVE;
481 spin_unlock_irq(shost->host_lock);
482 lpfc_can_disctmo(vport);
483 lpfc_end_rscn(vport);
484 }
485 }
486 }
487 }
488
489 lpfc_els_rsp_acc(vport, ELS_CMD_PLOGI, cmdiocb, ndlp, mbox);
490 return 1;
491
492 out:
493 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
494 stat.un.b.lsRjtRsnCodeExp = LSEXP_OUT_OF_RESOURCE;
495 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
496 return 0;
497 }
498
499 static int
500 lpfc_rcv_padisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
501 struct lpfc_iocbq *cmdiocb)
502 {
503 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
504 struct lpfc_dmabuf *pcmd;
505 struct serv_parm *sp;
506 struct lpfc_name *pnn, *ppn;
507 struct ls_rjt stat;
508 ADISC *ap;
509 IOCB_t *icmd;
510 uint32_t *lp;
511 uint32_t cmd;
512
513 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
514 lp = (uint32_t *) pcmd->virt;
515
516 cmd = *lp++;
517 if (cmd == ELS_CMD_ADISC) {
518 ap = (ADISC *) lp;
519 pnn = (struct lpfc_name *) & ap->nodeName;
520 ppn = (struct lpfc_name *) & ap->portName;
521 } else {
522 sp = (struct serv_parm *) lp;
523 pnn = (struct lpfc_name *) & sp->nodeName;
524 ppn = (struct lpfc_name *) & sp->portName;
525 }
526
527 icmd = &cmdiocb->iocb;
528 if (icmd->ulpStatus == 0 && lpfc_check_adisc(vport, ndlp, pnn, ppn)) {
529 if (cmd == ELS_CMD_ADISC) {
530 lpfc_els_rsp_adisc_acc(vport, cmdiocb, ndlp);
531 } else {
532 lpfc_els_rsp_acc(vport, ELS_CMD_PLOGI, cmdiocb, ndlp,
533 NULL);
534 }
535 return 1;
536 }
537 /* Reject this request because invalid parameters */
538 stat.un.b.lsRjtRsvd0 = 0;
539 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
540 stat.un.b.lsRjtRsnCodeExp = LSEXP_SPARM_OPTIONS;
541 stat.un.b.vendorUnique = 0;
542 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
543
544 /* 1 sec timeout */
545 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ);
546
547 spin_lock_irq(shost->host_lock);
548 ndlp->nlp_flag |= NLP_DELAY_TMO;
549 spin_unlock_irq(shost->host_lock);
550 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
551 ndlp->nlp_prev_state = ndlp->nlp_state;
552 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
553 return 0;
554 }
555
556 static int
557 lpfc_rcv_logo(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
558 struct lpfc_iocbq *cmdiocb, uint32_t els_cmd)
559 {
560 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
561
562 /* Put ndlp in NPR state with 1 sec timeout for plogi, ACC logo */
563 /* Only call LOGO ACC for first LOGO, this avoids sending unnecessary
564 * PLOGIs during LOGO storms from a device.
565 */
566 spin_lock_irq(shost->host_lock);
567 ndlp->nlp_flag |= NLP_LOGO_ACC;
568 spin_unlock_irq(shost->host_lock);
569 if (els_cmd == ELS_CMD_PRLO)
570 lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
571 else
572 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
573
574 if (!(ndlp->nlp_type & NLP_FABRIC) ||
575 (ndlp->nlp_state == NLP_STE_ADISC_ISSUE)) {
576 /* Only try to re-login if this is NOT a Fabric Node */
577 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ * 1);
578 spin_lock_irq(shost->host_lock);
579 ndlp->nlp_flag |= NLP_DELAY_TMO;
580 spin_unlock_irq(shost->host_lock);
581
582 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
583 }
584 ndlp->nlp_prev_state = ndlp->nlp_state;
585 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
586
587 spin_lock_irq(shost->host_lock);
588 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
589 spin_unlock_irq(shost->host_lock);
590 /* The driver has to wait until the ACC completes before it continues
591 * processing the LOGO. The action will resume in
592 * lpfc_cmpl_els_logo_acc routine. Since part of processing includes an
593 * unreg_login, the driver waits so the ACC does not get aborted.
594 */
595 return 0;
596 }
597
598 static void
599 lpfc_rcv_prli(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
600 struct lpfc_iocbq *cmdiocb)
601 {
602 struct lpfc_dmabuf *pcmd;
603 uint32_t *lp;
604 PRLI *npr;
605 struct fc_rport *rport = ndlp->rport;
606 u32 roles;
607
608 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
609 lp = (uint32_t *) pcmd->virt;
610 npr = (PRLI *) ((uint8_t *) lp + sizeof (uint32_t));
611
612 ndlp->nlp_type &= ~(NLP_FCP_TARGET | NLP_FCP_INITIATOR);
613 ndlp->nlp_fcp_info &= ~NLP_FCP_2_DEVICE;
614 if (npr->prliType == PRLI_FCP_TYPE) {
615 if (npr->initiatorFunc)
616 ndlp->nlp_type |= NLP_FCP_INITIATOR;
617 if (npr->targetFunc)
618 ndlp->nlp_type |= NLP_FCP_TARGET;
619 if (npr->Retry)
620 ndlp->nlp_fcp_info |= NLP_FCP_2_DEVICE;
621 }
622 if (rport) {
623 /* We need to update the rport role values */
624 roles = FC_RPORT_ROLE_UNKNOWN;
625 if (ndlp->nlp_type & NLP_FCP_INITIATOR)
626 roles |= FC_RPORT_ROLE_FCP_INITIATOR;
627 if (ndlp->nlp_type & NLP_FCP_TARGET)
628 roles |= FC_RPORT_ROLE_FCP_TARGET;
629
630 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
631 "rport rolechg: role:x%x did:x%x flg:x%x",
632 roles, ndlp->nlp_DID, ndlp->nlp_flag);
633
634 fc_remote_port_rolechg(rport, roles);
635 }
636 }
637
638 static uint32_t
639 lpfc_disc_set_adisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
640 {
641 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
642
643 if (!ndlp->nlp_rpi) {
644 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
645 return 0;
646 }
647
648 if (!(vport->fc_flag & FC_PT2PT)) {
649 /* Check config parameter use-adisc or FCP-2 */
650 if ((vport->cfg_use_adisc && (vport->fc_flag & FC_RSCN_MODE)) ||
651 ndlp->nlp_fcp_info & NLP_FCP_2_DEVICE) {
652 spin_lock_irq(shost->host_lock);
653 ndlp->nlp_flag |= NLP_NPR_ADISC;
654 spin_unlock_irq(shost->host_lock);
655 return 1;
656 }
657 }
658 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
659 lpfc_unreg_rpi(vport, ndlp);
660 return 0;
661 }
662
663 static uint32_t
664 lpfc_disc_illegal(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
665 void *arg, uint32_t evt)
666 {
667 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
668 "0271 Illegal State Transition: node x%x "
669 "event x%x, state x%x Data: x%x x%x\n",
670 ndlp->nlp_DID, evt, ndlp->nlp_state, ndlp->nlp_rpi,
671 ndlp->nlp_flag);
672 return ndlp->nlp_state;
673 }
674
675 static uint32_t
676 lpfc_cmpl_plogi_illegal(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
677 void *arg, uint32_t evt)
678 {
679 /* This transition is only legal if we previously
680 * rcv'ed a PLOGI. Since we don't want 2 discovery threads
681 * working on the same NPortID, do nothing for this thread
682 * to stop it.
683 */
684 if (!(ndlp->nlp_flag & NLP_RCV_PLOGI)) {
685 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
686 "0272 Illegal State Transition: node x%x "
687 "event x%x, state x%x Data: x%x x%x\n",
688 ndlp->nlp_DID, evt, ndlp->nlp_state, ndlp->nlp_rpi,
689 ndlp->nlp_flag);
690 }
691 return ndlp->nlp_state;
692 }
693
694 /* Start of Discovery State Machine routines */
695
696 static uint32_t
697 lpfc_rcv_plogi_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
698 void *arg, uint32_t evt)
699 {
700 struct lpfc_iocbq *cmdiocb;
701
702 cmdiocb = (struct lpfc_iocbq *) arg;
703
704 if (lpfc_rcv_plogi(vport, ndlp, cmdiocb)) {
705 return ndlp->nlp_state;
706 }
707 return NLP_STE_FREED_NODE;
708 }
709
710 static uint32_t
711 lpfc_rcv_els_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
712 void *arg, uint32_t evt)
713 {
714 lpfc_issue_els_logo(vport, ndlp, 0);
715 return ndlp->nlp_state;
716 }
717
718 static uint32_t
719 lpfc_rcv_logo_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
720 void *arg, uint32_t evt)
721 {
722 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
723 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
724
725 spin_lock_irq(shost->host_lock);
726 ndlp->nlp_flag |= NLP_LOGO_ACC;
727 spin_unlock_irq(shost->host_lock);
728 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
729
730 return ndlp->nlp_state;
731 }
732
733 static uint32_t
734 lpfc_cmpl_logo_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
735 void *arg, uint32_t evt)
736 {
737 return NLP_STE_FREED_NODE;
738 }
739
740 static uint32_t
741 lpfc_device_rm_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
742 void *arg, uint32_t evt)
743 {
744 return NLP_STE_FREED_NODE;
745 }
746
747 static uint32_t
748 lpfc_rcv_plogi_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
749 void *arg, uint32_t evt)
750 {
751 struct lpfc_hba *phba = vport->phba;
752 struct lpfc_iocbq *cmdiocb = arg;
753 struct lpfc_dmabuf *pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
754 uint32_t *lp = (uint32_t *) pcmd->virt;
755 struct serv_parm *sp = (struct serv_parm *) (lp + 1);
756 struct ls_rjt stat;
757 int port_cmp;
758
759 memset(&stat, 0, sizeof (struct ls_rjt));
760
761 /* For a PLOGI, we only accept if our portname is less
762 * than the remote portname.
763 */
764 phba->fc_stat.elsLogiCol++;
765 port_cmp = memcmp(&vport->fc_portname, &sp->portName,
766 sizeof(struct lpfc_name));
767
768 if (port_cmp >= 0) {
769 /* Reject this request because the remote node will accept
770 ours */
771 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
772 stat.un.b.lsRjtRsnCodeExp = LSEXP_CMD_IN_PROGRESS;
773 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
774 NULL);
775 } else {
776 lpfc_rcv_plogi(vport, ndlp, cmdiocb);
777 } /* If our portname was less */
778
779 return ndlp->nlp_state;
780 }
781
782 static uint32_t
783 lpfc_rcv_prli_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
784 void *arg, uint32_t evt)
785 {
786 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
787 struct ls_rjt stat;
788
789 memset(&stat, 0, sizeof (struct ls_rjt));
790 stat.un.b.lsRjtRsnCode = LSRJT_LOGICAL_BSY;
791 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
792 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
793 return ndlp->nlp_state;
794 }
795
796 static uint32_t
797 lpfc_rcv_logo_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
798 void *arg, uint32_t evt)
799 {
800 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
801
802 /* software abort outstanding PLOGI */
803 lpfc_els_abort(vport->phba, ndlp);
804
805 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
806 return ndlp->nlp_state;
807 }
808
809 static uint32_t
810 lpfc_rcv_els_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
811 void *arg, uint32_t evt)
812 {
813 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
814 struct lpfc_hba *phba = vport->phba;
815 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
816
817 /* software abort outstanding PLOGI */
818 lpfc_els_abort(phba, ndlp);
819
820 if (evt == NLP_EVT_RCV_LOGO) {
821 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
822 } else {
823 lpfc_issue_els_logo(vport, ndlp, 0);
824 }
825
826 /* Put ndlp in npr state set plogi timer for 1 sec */
827 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ * 1);
828 spin_lock_irq(shost->host_lock);
829 ndlp->nlp_flag |= NLP_DELAY_TMO;
830 spin_unlock_irq(shost->host_lock);
831 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
832 ndlp->nlp_prev_state = NLP_STE_PLOGI_ISSUE;
833 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
834
835 return ndlp->nlp_state;
836 }
837
838 static uint32_t
839 lpfc_cmpl_plogi_plogi_issue(struct lpfc_vport *vport,
840 struct lpfc_nodelist *ndlp,
841 void *arg,
842 uint32_t evt)
843 {
844 struct lpfc_hba *phba = vport->phba;
845 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
846 struct lpfc_iocbq *cmdiocb, *rspiocb;
847 struct lpfc_dmabuf *pcmd, *prsp, *mp;
848 uint32_t *lp;
849 IOCB_t *irsp;
850 struct serv_parm *sp;
851 LPFC_MBOXQ_t *mbox;
852
853 cmdiocb = (struct lpfc_iocbq *) arg;
854 rspiocb = cmdiocb->context_un.rsp_iocb;
855
856 if (ndlp->nlp_flag & NLP_ACC_REGLOGIN) {
857 /* Recovery from PLOGI collision logic */
858 return ndlp->nlp_state;
859 }
860
861 irsp = &rspiocb->iocb;
862
863 if (irsp->ulpStatus)
864 goto out;
865
866 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
867
868 prsp = list_get_first(&pcmd->list, struct lpfc_dmabuf, list);
869
870 lp = (uint32_t *) prsp->virt;
871 sp = (struct serv_parm *) ((uint8_t *) lp + sizeof (uint32_t));
872 if (wwn_to_u64(sp->portName.u.wwn) == 0 ||
873 wwn_to_u64(sp->nodeName.u.wwn) == 0) {
874 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
875 "0142 PLOGI RSP: Invalid WWN.\n");
876 goto out;
877 }
878 if (!lpfc_check_sparm(vport, ndlp, sp, CLASS3))
879 goto out;
880 /* PLOGI chkparm OK */
881 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
882 "0121 PLOGI chkparm OK Data: x%x x%x x%x x%x\n",
883 ndlp->nlp_DID, ndlp->nlp_state,
884 ndlp->nlp_flag, ndlp->nlp_rpi);
885 if (vport->cfg_fcp_class == 2 && (sp->cls2.classValid))
886 ndlp->nlp_fcp_info |= CLASS2;
887 else
888 ndlp->nlp_fcp_info |= CLASS3;
889
890 ndlp->nlp_class_sup = 0;
891 if (sp->cls1.classValid)
892 ndlp->nlp_class_sup |= FC_COS_CLASS1;
893 if (sp->cls2.classValid)
894 ndlp->nlp_class_sup |= FC_COS_CLASS2;
895 if (sp->cls3.classValid)
896 ndlp->nlp_class_sup |= FC_COS_CLASS3;
897 if (sp->cls4.classValid)
898 ndlp->nlp_class_sup |= FC_COS_CLASS4;
899 ndlp->nlp_maxframe =
900 ((sp->cmn.bbRcvSizeMsb & 0x0F) << 8) | sp->cmn.bbRcvSizeLsb;
901
902 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
903 if (!mbox) {
904 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
905 "0133 PLOGI: no memory for reg_login "
906 "Data: x%x x%x x%x x%x\n",
907 ndlp->nlp_DID, ndlp->nlp_state,
908 ndlp->nlp_flag, ndlp->nlp_rpi);
909 goto out;
910 }
911
912 lpfc_unreg_rpi(vport, ndlp);
913
914 if (lpfc_reg_login(phba, vport->vpi, irsp->un.elsreq64.remoteID,
915 (uint8_t *) sp, mbox, 0) == 0) {
916 switch (ndlp->nlp_DID) {
917 case NameServer_DID:
918 mbox->mbox_cmpl = lpfc_mbx_cmpl_ns_reg_login;
919 break;
920 case FDMI_DID:
921 mbox->mbox_cmpl = lpfc_mbx_cmpl_fdmi_reg_login;
922 break;
923 default:
924 mbox->mbox_cmpl = lpfc_mbx_cmpl_reg_login;
925 }
926 mbox->context2 = lpfc_nlp_get(ndlp);
927 mbox->vport = vport;
928 if (lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT)
929 != MBX_NOT_FINISHED) {
930 lpfc_nlp_set_state(vport, ndlp,
931 NLP_STE_REG_LOGIN_ISSUE);
932 return ndlp->nlp_state;
933 }
934 /* decrement node reference count to the failed mbox
935 * command
936 */
937 lpfc_nlp_put(ndlp);
938 mp = (struct lpfc_dmabuf *) mbox->context1;
939 lpfc_mbuf_free(phba, mp->virt, mp->phys);
940 kfree(mp);
941 mempool_free(mbox, phba->mbox_mem_pool);
942
943 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
944 "0134 PLOGI: cannot issue reg_login "
945 "Data: x%x x%x x%x x%x\n",
946 ndlp->nlp_DID, ndlp->nlp_state,
947 ndlp->nlp_flag, ndlp->nlp_rpi);
948 } else {
949 mempool_free(mbox, phba->mbox_mem_pool);
950
951 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
952 "0135 PLOGI: cannot format reg_login "
953 "Data: x%x x%x x%x x%x\n",
954 ndlp->nlp_DID, ndlp->nlp_state,
955 ndlp->nlp_flag, ndlp->nlp_rpi);
956 }
957
958
959 out:
960 if (ndlp->nlp_DID == NameServer_DID) {
961 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
962 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
963 "0261 Cannot Register NameServer login\n");
964 }
965
966 spin_lock_irq(shost->host_lock);
967 ndlp->nlp_flag |= NLP_DEFER_RM;
968 spin_unlock_irq(shost->host_lock);
969 return NLP_STE_FREED_NODE;
970 }
971
972 static uint32_t
973 lpfc_cmpl_logo_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
974 void *arg, uint32_t evt)
975 {
976 return ndlp->nlp_state;
977 }
978
979 static uint32_t
980 lpfc_cmpl_reglogin_plogi_issue(struct lpfc_vport *vport,
981 struct lpfc_nodelist *ndlp, void *arg, uint32_t evt)
982 {
983 return ndlp->nlp_state;
984 }
985
986 static uint32_t
987 lpfc_device_rm_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
988 void *arg, uint32_t evt)
989 {
990 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
991
992 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
993 spin_lock_irq(shost->host_lock);
994 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
995 spin_unlock_irq(shost->host_lock);
996 return ndlp->nlp_state;
997 } else {
998 /* software abort outstanding PLOGI */
999 lpfc_els_abort(vport->phba, ndlp);
1000
1001 lpfc_drop_node(vport, ndlp);
1002 return NLP_STE_FREED_NODE;
1003 }
1004 }
1005
1006 static uint32_t
1007 lpfc_device_recov_plogi_issue(struct lpfc_vport *vport,
1008 struct lpfc_nodelist *ndlp,
1009 void *arg,
1010 uint32_t evt)
1011 {
1012 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1013 struct lpfc_hba *phba = vport->phba;
1014
1015 /* Don't do anything that will mess up processing of the
1016 * previous RSCN.
1017 */
1018 if (vport->fc_flag & FC_RSCN_DEFERRED)
1019 return ndlp->nlp_state;
1020
1021 /* software abort outstanding PLOGI */
1022 lpfc_els_abort(phba, ndlp);
1023
1024 ndlp->nlp_prev_state = NLP_STE_PLOGI_ISSUE;
1025 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1026 spin_lock_irq(shost->host_lock);
1027 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1028 spin_unlock_irq(shost->host_lock);
1029
1030 return ndlp->nlp_state;
1031 }
1032
1033 static uint32_t
1034 lpfc_rcv_plogi_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1035 void *arg, uint32_t evt)
1036 {
1037 struct lpfc_hba *phba = vport->phba;
1038 struct lpfc_iocbq *cmdiocb;
1039
1040 /* software abort outstanding ADISC */
1041 lpfc_els_abort(phba, ndlp);
1042
1043 cmdiocb = (struct lpfc_iocbq *) arg;
1044
1045 if (lpfc_rcv_plogi(vport, ndlp, cmdiocb))
1046 return ndlp->nlp_state;
1047
1048 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1049 lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
1050 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
1051
1052 return ndlp->nlp_state;
1053 }
1054
1055 static uint32_t
1056 lpfc_rcv_prli_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1057 void *arg, uint32_t evt)
1058 {
1059 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1060
1061 lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1062 return ndlp->nlp_state;
1063 }
1064
1065 static uint32_t
1066 lpfc_rcv_logo_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1067 void *arg, uint32_t evt)
1068 {
1069 struct lpfc_hba *phba = vport->phba;
1070 struct lpfc_iocbq *cmdiocb;
1071
1072 cmdiocb = (struct lpfc_iocbq *) arg;
1073
1074 /* software abort outstanding ADISC */
1075 lpfc_els_abort(phba, ndlp);
1076
1077 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1078 return ndlp->nlp_state;
1079 }
1080
1081 static uint32_t
1082 lpfc_rcv_padisc_adisc_issue(struct lpfc_vport *vport,
1083 struct lpfc_nodelist *ndlp,
1084 void *arg, uint32_t evt)
1085 {
1086 struct lpfc_iocbq *cmdiocb;
1087
1088 cmdiocb = (struct lpfc_iocbq *) arg;
1089
1090 lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1091 return ndlp->nlp_state;
1092 }
1093
1094 static uint32_t
1095 lpfc_rcv_prlo_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1096 void *arg, uint32_t evt)
1097 {
1098 struct lpfc_iocbq *cmdiocb;
1099
1100 cmdiocb = (struct lpfc_iocbq *) arg;
1101
1102 /* Treat like rcv logo */
1103 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_PRLO);
1104 return ndlp->nlp_state;
1105 }
1106
1107 static uint32_t
1108 lpfc_cmpl_adisc_adisc_issue(struct lpfc_vport *vport,
1109 struct lpfc_nodelist *ndlp,
1110 void *arg, uint32_t evt)
1111 {
1112 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1113 struct lpfc_hba *phba = vport->phba;
1114 struct lpfc_iocbq *cmdiocb, *rspiocb;
1115 IOCB_t *irsp;
1116 ADISC *ap;
1117
1118 cmdiocb = (struct lpfc_iocbq *) arg;
1119 rspiocb = cmdiocb->context_un.rsp_iocb;
1120
1121 ap = (ADISC *)lpfc_check_elscmpl_iocb(phba, cmdiocb, rspiocb);
1122 irsp = &rspiocb->iocb;
1123
1124 if ((irsp->ulpStatus) ||
1125 (!lpfc_check_adisc(vport, ndlp, &ap->nodeName, &ap->portName))) {
1126 /* 1 sec timeout */
1127 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ);
1128 spin_lock_irq(shost->host_lock);
1129 ndlp->nlp_flag |= NLP_DELAY_TMO;
1130 spin_unlock_irq(shost->host_lock);
1131 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
1132
1133 memset(&ndlp->nlp_nodename, 0, sizeof(struct lpfc_name));
1134 memset(&ndlp->nlp_portname, 0, sizeof(struct lpfc_name));
1135
1136 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1137 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1138 lpfc_unreg_rpi(vport, ndlp);
1139 return ndlp->nlp_state;
1140 }
1141
1142 if (ndlp->nlp_type & NLP_FCP_TARGET) {
1143 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1144 lpfc_nlp_set_state(vport, ndlp, NLP_STE_MAPPED_NODE);
1145 } else {
1146 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1147 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1148 }
1149 return ndlp->nlp_state;
1150 }
1151
1152 static uint32_t
1153 lpfc_device_rm_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1154 void *arg, uint32_t evt)
1155 {
1156 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1157
1158 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1159 spin_lock_irq(shost->host_lock);
1160 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1161 spin_unlock_irq(shost->host_lock);
1162 return ndlp->nlp_state;
1163 } else {
1164 /* software abort outstanding ADISC */
1165 lpfc_els_abort(vport->phba, ndlp);
1166
1167 lpfc_drop_node(vport, ndlp);
1168 return NLP_STE_FREED_NODE;
1169 }
1170 }
1171
1172 static uint32_t
1173 lpfc_device_recov_adisc_issue(struct lpfc_vport *vport,
1174 struct lpfc_nodelist *ndlp,
1175 void *arg,
1176 uint32_t evt)
1177 {
1178 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1179 struct lpfc_hba *phba = vport->phba;
1180
1181 /* Don't do anything that will mess up processing of the
1182 * previous RSCN.
1183 */
1184 if (vport->fc_flag & FC_RSCN_DEFERRED)
1185 return ndlp->nlp_state;
1186
1187 /* software abort outstanding ADISC */
1188 lpfc_els_abort(phba, ndlp);
1189
1190 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1191 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1192 spin_lock_irq(shost->host_lock);
1193 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1194 spin_unlock_irq(shost->host_lock);
1195 lpfc_disc_set_adisc(vport, ndlp);
1196 return ndlp->nlp_state;
1197 }
1198
1199 static uint32_t
1200 lpfc_rcv_plogi_reglogin_issue(struct lpfc_vport *vport,
1201 struct lpfc_nodelist *ndlp,
1202 void *arg,
1203 uint32_t evt)
1204 {
1205 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1206
1207 lpfc_rcv_plogi(vport, ndlp, cmdiocb);
1208 return ndlp->nlp_state;
1209 }
1210
1211 static uint32_t
1212 lpfc_rcv_prli_reglogin_issue(struct lpfc_vport *vport,
1213 struct lpfc_nodelist *ndlp,
1214 void *arg,
1215 uint32_t evt)
1216 {
1217 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1218
1219 lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1220 return ndlp->nlp_state;
1221 }
1222
1223 static uint32_t
1224 lpfc_rcv_logo_reglogin_issue(struct lpfc_vport *vport,
1225 struct lpfc_nodelist *ndlp,
1226 void *arg,
1227 uint32_t evt)
1228 {
1229 struct lpfc_hba *phba = vport->phba;
1230 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1231 LPFC_MBOXQ_t *mb;
1232 LPFC_MBOXQ_t *nextmb;
1233 struct lpfc_dmabuf *mp;
1234
1235 cmdiocb = (struct lpfc_iocbq *) arg;
1236
1237 /* cleanup any ndlp on mbox q waiting for reglogin cmpl */
1238 if ((mb = phba->sli.mbox_active)) {
1239 if ((mb->mb.mbxCommand == MBX_REG_LOGIN64) &&
1240 (ndlp == (struct lpfc_nodelist *) mb->context2)) {
1241 lpfc_nlp_put(ndlp);
1242 mb->context2 = NULL;
1243 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
1244 }
1245 }
1246
1247 spin_lock_irq(&phba->hbalock);
1248 list_for_each_entry_safe(mb, nextmb, &phba->sli.mboxq, list) {
1249 if ((mb->mb.mbxCommand == MBX_REG_LOGIN64) &&
1250 (ndlp == (struct lpfc_nodelist *) mb->context2)) {
1251 mp = (struct lpfc_dmabuf *) (mb->context1);
1252 if (mp) {
1253 __lpfc_mbuf_free(phba, mp->virt, mp->phys);
1254 kfree(mp);
1255 }
1256 lpfc_nlp_put(ndlp);
1257 list_del(&mb->list);
1258 mempool_free(mb, phba->mbox_mem_pool);
1259 }
1260 }
1261 spin_unlock_irq(&phba->hbalock);
1262
1263 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1264 return ndlp->nlp_state;
1265 }
1266
1267 static uint32_t
1268 lpfc_rcv_padisc_reglogin_issue(struct lpfc_vport *vport,
1269 struct lpfc_nodelist *ndlp,
1270 void *arg,
1271 uint32_t evt)
1272 {
1273 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1274
1275 lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1276 return ndlp->nlp_state;
1277 }
1278
1279 static uint32_t
1280 lpfc_rcv_prlo_reglogin_issue(struct lpfc_vport *vport,
1281 struct lpfc_nodelist *ndlp,
1282 void *arg,
1283 uint32_t evt)
1284 {
1285 struct lpfc_iocbq *cmdiocb;
1286
1287 cmdiocb = (struct lpfc_iocbq *) arg;
1288 lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
1289 return ndlp->nlp_state;
1290 }
1291
1292 static uint32_t
1293 lpfc_cmpl_reglogin_reglogin_issue(struct lpfc_vport *vport,
1294 struct lpfc_nodelist *ndlp,
1295 void *arg,
1296 uint32_t evt)
1297 {
1298 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1299 LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg;
1300 MAILBOX_t *mb = &pmb->mb;
1301 uint32_t did = mb->un.varWords[1];
1302
1303 if (mb->mbxStatus) {
1304 /* RegLogin failed */
1305 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
1306 "0246 RegLogin failed Data: x%x x%x x%x\n",
1307 did, mb->mbxStatus, vport->port_state);
1308 /*
1309 * If RegLogin failed due to lack of HBA resources do not
1310 * retry discovery.
1311 */
1312 if (mb->mbxStatus == MBXERR_RPI_FULL) {
1313 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1314 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1315 return ndlp->nlp_state;
1316 }
1317
1318 /* Put ndlp in npr state set plogi timer for 1 sec */
1319 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ * 1);
1320 spin_lock_irq(shost->host_lock);
1321 ndlp->nlp_flag |= NLP_DELAY_TMO;
1322 spin_unlock_irq(shost->host_lock);
1323 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
1324
1325 lpfc_issue_els_logo(vport, ndlp, 0);
1326 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1327 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1328 return ndlp->nlp_state;
1329 }
1330
1331 ndlp->nlp_rpi = mb->un.varWords[0];
1332
1333 /* Only if we are not a fabric nport do we issue PRLI */
1334 if (!(ndlp->nlp_type & NLP_FABRIC)) {
1335 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1336 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PRLI_ISSUE);
1337 lpfc_issue_els_prli(vport, ndlp, 0);
1338 } else {
1339 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1340 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1341 }
1342 return ndlp->nlp_state;
1343 }
1344
1345 static uint32_t
1346 lpfc_device_rm_reglogin_issue(struct lpfc_vport *vport,
1347 struct lpfc_nodelist *ndlp,
1348 void *arg,
1349 uint32_t evt)
1350 {
1351 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1352
1353 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1354 spin_lock_irq(shost->host_lock);
1355 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1356 spin_unlock_irq(shost->host_lock);
1357 return ndlp->nlp_state;
1358 } else {
1359 lpfc_drop_node(vport, ndlp);
1360 return NLP_STE_FREED_NODE;
1361 }
1362 }
1363
1364 static uint32_t
1365 lpfc_device_recov_reglogin_issue(struct lpfc_vport *vport,
1366 struct lpfc_nodelist *ndlp,
1367 void *arg,
1368 uint32_t evt)
1369 {
1370 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1371
1372 /* Don't do anything that will mess up processing of the
1373 * previous RSCN.
1374 */
1375 if (vport->fc_flag & FC_RSCN_DEFERRED)
1376 return ndlp->nlp_state;
1377
1378 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1379 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1380 spin_lock_irq(shost->host_lock);
1381 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1382 spin_unlock_irq(shost->host_lock);
1383 lpfc_disc_set_adisc(vport, ndlp);
1384 return ndlp->nlp_state;
1385 }
1386
1387 static uint32_t
1388 lpfc_rcv_plogi_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1389 void *arg, uint32_t evt)
1390 {
1391 struct lpfc_iocbq *cmdiocb;
1392
1393 cmdiocb = (struct lpfc_iocbq *) arg;
1394
1395 lpfc_rcv_plogi(vport, ndlp, cmdiocb);
1396 return ndlp->nlp_state;
1397 }
1398
1399 static uint32_t
1400 lpfc_rcv_prli_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1401 void *arg, uint32_t evt)
1402 {
1403 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1404
1405 lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1406 return ndlp->nlp_state;
1407 }
1408
1409 static uint32_t
1410 lpfc_rcv_logo_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1411 void *arg, uint32_t evt)
1412 {
1413 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1414
1415 /* Software abort outstanding PRLI before sending acc */
1416 lpfc_els_abort(vport->phba, ndlp);
1417
1418 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1419 return ndlp->nlp_state;
1420 }
1421
1422 static uint32_t
1423 lpfc_rcv_padisc_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1424 void *arg, uint32_t evt)
1425 {
1426 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1427
1428 lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1429 return ndlp->nlp_state;
1430 }
1431
1432 /* This routine is envoked when we rcv a PRLO request from a nport
1433 * we are logged into. We should send back a PRLO rsp setting the
1434 * appropriate bits.
1435 * NEXT STATE = PRLI_ISSUE
1436 */
1437 static uint32_t
1438 lpfc_rcv_prlo_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1439 void *arg, uint32_t evt)
1440 {
1441 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1442
1443 lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
1444 return ndlp->nlp_state;
1445 }
1446
1447 static uint32_t
1448 lpfc_cmpl_prli_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1449 void *arg, uint32_t evt)
1450 {
1451 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1452 struct lpfc_iocbq *cmdiocb, *rspiocb;
1453 struct lpfc_hba *phba = vport->phba;
1454 IOCB_t *irsp;
1455 PRLI *npr;
1456
1457 cmdiocb = (struct lpfc_iocbq *) arg;
1458 rspiocb = cmdiocb->context_un.rsp_iocb;
1459 npr = (PRLI *)lpfc_check_elscmpl_iocb(phba, cmdiocb, rspiocb);
1460
1461 irsp = &rspiocb->iocb;
1462 if (irsp->ulpStatus) {
1463 if ((vport->port_type == LPFC_NPIV_PORT) &&
1464 vport->cfg_restrict_login) {
1465 goto out;
1466 }
1467 ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
1468 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1469 return ndlp->nlp_state;
1470 }
1471
1472 /* Check out PRLI rsp */
1473 ndlp->nlp_type &= ~(NLP_FCP_TARGET | NLP_FCP_INITIATOR);
1474 ndlp->nlp_fcp_info &= ~NLP_FCP_2_DEVICE;
1475 if ((npr->acceptRspCode == PRLI_REQ_EXECUTED) &&
1476 (npr->prliType == PRLI_FCP_TYPE)) {
1477 if (npr->initiatorFunc)
1478 ndlp->nlp_type |= NLP_FCP_INITIATOR;
1479 if (npr->targetFunc)
1480 ndlp->nlp_type |= NLP_FCP_TARGET;
1481 if (npr->Retry)
1482 ndlp->nlp_fcp_info |= NLP_FCP_2_DEVICE;
1483 }
1484 if (!(ndlp->nlp_type & NLP_FCP_TARGET) &&
1485 (vport->port_type == LPFC_NPIV_PORT) &&
1486 vport->cfg_restrict_login) {
1487 out:
1488 spin_lock_irq(shost->host_lock);
1489 ndlp->nlp_flag |= NLP_TARGET_REMOVE;
1490 spin_unlock_irq(shost->host_lock);
1491 lpfc_issue_els_logo(vport, ndlp, 0);
1492
1493 ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
1494 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1495 return ndlp->nlp_state;
1496 }
1497
1498 ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
1499 if (ndlp->nlp_type & NLP_FCP_TARGET)
1500 lpfc_nlp_set_state(vport, ndlp, NLP_STE_MAPPED_NODE);
1501 else
1502 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1503 return ndlp->nlp_state;
1504 }
1505
1506 /*! lpfc_device_rm_prli_issue
1507 *
1508 * \pre
1509 * \post
1510 * \param phba
1511 * \param ndlp
1512 * \param arg
1513 * \param evt
1514 * \return uint32_t
1515 *
1516 * \b Description:
1517 * This routine is envoked when we a request to remove a nport we are in the
1518 * process of PRLIing. We should software abort outstanding prli, unreg
1519 * login, send a logout. We will change node state to UNUSED_NODE, put it
1520 * on plogi list so it can be freed when LOGO completes.
1521 *
1522 */
1523
1524 static uint32_t
1525 lpfc_device_rm_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1526 void *arg, uint32_t evt)
1527 {
1528 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1529
1530 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1531 spin_lock_irq(shost->host_lock);
1532 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1533 spin_unlock_irq(shost->host_lock);
1534 return ndlp->nlp_state;
1535 } else {
1536 /* software abort outstanding PLOGI */
1537 lpfc_els_abort(vport->phba, ndlp);
1538
1539 lpfc_drop_node(vport, ndlp);
1540 return NLP_STE_FREED_NODE;
1541 }
1542 }
1543
1544
1545 /*! lpfc_device_recov_prli_issue
1546 *
1547 * \pre
1548 * \post
1549 * \param phba
1550 * \param ndlp
1551 * \param arg
1552 * \param evt
1553 * \return uint32_t
1554 *
1555 * \b Description:
1556 * The routine is envoked when the state of a device is unknown, like
1557 * during a link down. We should remove the nodelist entry from the
1558 * unmapped list, issue a UNREG_LOGIN, do a software abort of the
1559 * outstanding PRLI command, then free the node entry.
1560 */
1561 static uint32_t
1562 lpfc_device_recov_prli_issue(struct lpfc_vport *vport,
1563 struct lpfc_nodelist *ndlp,
1564 void *arg,
1565 uint32_t evt)
1566 {
1567 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1568 struct lpfc_hba *phba = vport->phba;
1569
1570 /* Don't do anything that will mess up processing of the
1571 * previous RSCN.
1572 */
1573 if (vport->fc_flag & FC_RSCN_DEFERRED)
1574 return ndlp->nlp_state;
1575
1576 /* software abort outstanding PRLI */
1577 lpfc_els_abort(phba, ndlp);
1578
1579 ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
1580 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1581 spin_lock_irq(shost->host_lock);
1582 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1583 spin_unlock_irq(shost->host_lock);
1584 lpfc_disc_set_adisc(vport, ndlp);
1585 return ndlp->nlp_state;
1586 }
1587
1588 static uint32_t
1589 lpfc_rcv_plogi_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1590 void *arg, uint32_t evt)
1591 {
1592 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1593
1594 lpfc_rcv_plogi(vport, ndlp, cmdiocb);
1595 return ndlp->nlp_state;
1596 }
1597
1598 static uint32_t
1599 lpfc_rcv_prli_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1600 void *arg, uint32_t evt)
1601 {
1602 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1603
1604 lpfc_rcv_prli(vport, ndlp, cmdiocb);
1605 lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1606 return ndlp->nlp_state;
1607 }
1608
1609 static uint32_t
1610 lpfc_rcv_logo_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1611 void *arg, uint32_t evt)
1612 {
1613 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1614
1615 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1616 return ndlp->nlp_state;
1617 }
1618
1619 static uint32_t
1620 lpfc_rcv_padisc_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1621 void *arg, uint32_t evt)
1622 {
1623 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1624
1625 lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1626 return ndlp->nlp_state;
1627 }
1628
1629 static uint32_t
1630 lpfc_rcv_prlo_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1631 void *arg, uint32_t evt)
1632 {
1633 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1634
1635 lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
1636 return ndlp->nlp_state;
1637 }
1638
1639 static uint32_t
1640 lpfc_device_recov_unmap_node(struct lpfc_vport *vport,
1641 struct lpfc_nodelist *ndlp,
1642 void *arg,
1643 uint32_t evt)
1644 {
1645 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1646
1647 ndlp->nlp_prev_state = NLP_STE_UNMAPPED_NODE;
1648 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1649 spin_lock_irq(shost->host_lock);
1650 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1651 spin_unlock_irq(shost->host_lock);
1652 lpfc_disc_set_adisc(vport, ndlp);
1653
1654 return ndlp->nlp_state;
1655 }
1656
1657 static uint32_t
1658 lpfc_rcv_plogi_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1659 void *arg, uint32_t evt)
1660 {
1661 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1662
1663 lpfc_rcv_plogi(vport, ndlp, cmdiocb);
1664 return ndlp->nlp_state;
1665 }
1666
1667 static uint32_t
1668 lpfc_rcv_prli_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1669 void *arg, uint32_t evt)
1670 {
1671 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1672
1673 lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1674 return ndlp->nlp_state;
1675 }
1676
1677 static uint32_t
1678 lpfc_rcv_logo_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1679 void *arg, uint32_t evt)
1680 {
1681 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1682
1683 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1684 return ndlp->nlp_state;
1685 }
1686
1687 static uint32_t
1688 lpfc_rcv_padisc_mapped_node(struct lpfc_vport *vport,
1689 struct lpfc_nodelist *ndlp,
1690 void *arg, uint32_t evt)
1691 {
1692 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1693
1694 lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1695 return ndlp->nlp_state;
1696 }
1697
1698 static uint32_t
1699 lpfc_rcv_prlo_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1700 void *arg, uint32_t evt)
1701 {
1702 struct lpfc_hba *phba = vport->phba;
1703 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1704
1705 /* flush the target */
1706 lpfc_sli_abort_iocb(vport, &phba->sli.ring[phba->sli.fcp_ring],
1707 ndlp->nlp_sid, 0, LPFC_CTX_TGT);
1708
1709 /* Treat like rcv logo */
1710 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_PRLO);
1711 return ndlp->nlp_state;
1712 }
1713
1714 static uint32_t
1715 lpfc_device_recov_mapped_node(struct lpfc_vport *vport,
1716 struct lpfc_nodelist *ndlp,
1717 void *arg,
1718 uint32_t evt)
1719 {
1720 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1721
1722 ndlp->nlp_prev_state = NLP_STE_MAPPED_NODE;
1723 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1724 spin_lock_irq(shost->host_lock);
1725 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1726 spin_unlock_irq(shost->host_lock);
1727 lpfc_disc_set_adisc(vport, ndlp);
1728 return ndlp->nlp_state;
1729 }
1730
1731 static uint32_t
1732 lpfc_rcv_plogi_npr_node(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 = (struct lpfc_iocbq *) arg;
1737
1738 /* Ignore PLOGI if we have an outstanding LOGO */
1739 if (ndlp->nlp_flag & (NLP_LOGO_SND | NLP_LOGO_ACC)) {
1740 return ndlp->nlp_state;
1741 }
1742
1743 if (lpfc_rcv_plogi(vport, ndlp, cmdiocb)) {
1744 spin_lock_irq(shost->host_lock);
1745 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
1746 spin_unlock_irq(shost->host_lock);
1747 return ndlp->nlp_state;
1748 }
1749
1750 /* send PLOGI immediately, move to PLOGI issue state */
1751 if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) {
1752 ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
1753 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
1754 lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
1755 }
1756
1757 return ndlp->nlp_state;
1758 }
1759
1760 static uint32_t
1761 lpfc_rcv_prli_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1762 void *arg, uint32_t evt)
1763 {
1764 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1765 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1766 struct ls_rjt stat;
1767
1768 memset(&stat, 0, sizeof (struct ls_rjt));
1769 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
1770 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
1771 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
1772
1773 if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) {
1774 if (ndlp->nlp_flag & NLP_NPR_ADISC) {
1775 spin_lock_irq(shost->host_lock);
1776 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
1777 ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
1778 spin_unlock_irq(shost->host_lock);
1779 lpfc_nlp_set_state(vport, ndlp, NLP_STE_ADISC_ISSUE);
1780 lpfc_issue_els_adisc(vport, ndlp, 0);
1781 } else {
1782 ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
1783 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
1784 lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
1785 }
1786 }
1787 return ndlp->nlp_state;
1788 }
1789
1790 static uint32_t
1791 lpfc_rcv_logo_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1792 void *arg, uint32_t evt)
1793 {
1794 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1795
1796 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1797 return ndlp->nlp_state;
1798 }
1799
1800 static uint32_t
1801 lpfc_rcv_padisc_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1802 void *arg, uint32_t evt)
1803 {
1804 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1805
1806 lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1807
1808 /*
1809 * Do not start discovery if discovery is about to start
1810 * or discovery in progress for this node. Starting discovery
1811 * here will affect the counting of discovery threads.
1812 */
1813 if (!(ndlp->nlp_flag & NLP_DELAY_TMO) &&
1814 !(ndlp->nlp_flag & NLP_NPR_2B_DISC)) {
1815 if (ndlp->nlp_flag & NLP_NPR_ADISC) {
1816 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
1817 ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
1818 lpfc_nlp_set_state(vport, ndlp, NLP_STE_ADISC_ISSUE);
1819 lpfc_issue_els_adisc(vport, ndlp, 0);
1820 } else {
1821 ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
1822 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
1823 lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
1824 }
1825 }
1826 return ndlp->nlp_state;
1827 }
1828
1829 static uint32_t
1830 lpfc_rcv_prlo_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1831 void *arg, uint32_t evt)
1832 {
1833 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1834 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1835
1836 spin_lock_irq(shost->host_lock);
1837 ndlp->nlp_flag |= NLP_LOGO_ACC;
1838 spin_unlock_irq(shost->host_lock);
1839
1840 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
1841
1842 if ((ndlp->nlp_flag & NLP_DELAY_TMO) == 0) {
1843 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ * 1);
1844 spin_lock_irq(shost->host_lock);
1845 ndlp->nlp_flag |= NLP_DELAY_TMO;
1846 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
1847 spin_unlock_irq(shost->host_lock);
1848 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
1849 } else {
1850 spin_lock_irq(shost->host_lock);
1851 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
1852 spin_unlock_irq(shost->host_lock);
1853 }
1854 return ndlp->nlp_state;
1855 }
1856
1857 static uint32_t
1858 lpfc_cmpl_plogi_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1859 void *arg, uint32_t evt)
1860 {
1861 struct lpfc_iocbq *cmdiocb, *rspiocb;
1862 IOCB_t *irsp;
1863
1864 cmdiocb = (struct lpfc_iocbq *) arg;
1865 rspiocb = cmdiocb->context_un.rsp_iocb;
1866
1867 irsp = &rspiocb->iocb;
1868 if (irsp->ulpStatus) {
1869 ndlp->nlp_flag |= NLP_DEFER_RM;
1870 return NLP_STE_FREED_NODE;
1871 }
1872 return ndlp->nlp_state;
1873 }
1874
1875 static uint32_t
1876 lpfc_cmpl_prli_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1877 void *arg, uint32_t evt)
1878 {
1879 struct lpfc_iocbq *cmdiocb, *rspiocb;
1880 IOCB_t *irsp;
1881
1882 cmdiocb = (struct lpfc_iocbq *) arg;
1883 rspiocb = cmdiocb->context_un.rsp_iocb;
1884
1885 irsp = &rspiocb->iocb;
1886 if (irsp->ulpStatus && (ndlp->nlp_flag & NLP_NODEV_REMOVE)) {
1887 lpfc_drop_node(vport, ndlp);
1888 return NLP_STE_FREED_NODE;
1889 }
1890 return ndlp->nlp_state;
1891 }
1892
1893 static uint32_t
1894 lpfc_cmpl_logo_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1895 void *arg, uint32_t evt)
1896 {
1897 lpfc_unreg_rpi(vport, ndlp);
1898 /* This routine does nothing, just return the current state */
1899 return ndlp->nlp_state;
1900 }
1901
1902 static uint32_t
1903 lpfc_cmpl_adisc_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1904 void *arg, uint32_t evt)
1905 {
1906 struct lpfc_iocbq *cmdiocb, *rspiocb;
1907 IOCB_t *irsp;
1908
1909 cmdiocb = (struct lpfc_iocbq *) arg;
1910 rspiocb = cmdiocb->context_un.rsp_iocb;
1911
1912 irsp = &rspiocb->iocb;
1913 if (irsp->ulpStatus && (ndlp->nlp_flag & NLP_NODEV_REMOVE)) {
1914 lpfc_drop_node(vport, ndlp);
1915 return NLP_STE_FREED_NODE;
1916 }
1917 return ndlp->nlp_state;
1918 }
1919
1920 static uint32_t
1921 lpfc_cmpl_reglogin_npr_node(struct lpfc_vport *vport,
1922 struct lpfc_nodelist *ndlp,
1923 void *arg, uint32_t evt)
1924 {
1925 LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg;
1926 MAILBOX_t *mb = &pmb->mb;
1927
1928 if (!mb->mbxStatus)
1929 ndlp->nlp_rpi = mb->un.varWords[0];
1930 else {
1931 if (ndlp->nlp_flag & NLP_NODEV_REMOVE) {
1932 lpfc_drop_node(vport, ndlp);
1933 return NLP_STE_FREED_NODE;
1934 }
1935 }
1936 return ndlp->nlp_state;
1937 }
1938
1939 static uint32_t
1940 lpfc_device_rm_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1941 void *arg, uint32_t evt)
1942 {
1943 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1944
1945 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1946 spin_lock_irq(shost->host_lock);
1947 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1948 spin_unlock_irq(shost->host_lock);
1949 return ndlp->nlp_state;
1950 }
1951 lpfc_drop_node(vport, ndlp);
1952 return NLP_STE_FREED_NODE;
1953 }
1954
1955 static uint32_t
1956 lpfc_device_recov_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1957 void *arg, uint32_t evt)
1958 {
1959 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1960
1961 /* Don't do anything that will mess up processing of the
1962 * previous RSCN.
1963 */
1964 if (vport->fc_flag & FC_RSCN_DEFERRED)
1965 return ndlp->nlp_state;
1966
1967 spin_lock_irq(shost->host_lock);
1968 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1969 spin_unlock_irq(shost->host_lock);
1970 if (ndlp->nlp_flag & NLP_DELAY_TMO) {
1971 lpfc_cancel_retry_delay_tmo(vport, ndlp);
1972 }
1973 return ndlp->nlp_state;
1974 }
1975
1976
1977 /* This next section defines the NPort Discovery State Machine */
1978
1979 /* There are 4 different double linked lists nodelist entries can reside on.
1980 * The plogi list and adisc list are used when Link Up discovery or RSCN
1981 * processing is needed. Each list holds the nodes that we will send PLOGI
1982 * or ADISC on. These lists will keep track of what nodes will be effected
1983 * by an RSCN, or a Link Up (Typically, all nodes are effected on Link Up).
1984 * The unmapped_list will contain all nodes that we have successfully logged
1985 * into at the Fibre Channel level. The mapped_list will contain all nodes
1986 * that are mapped FCP targets.
1987 */
1988 /*
1989 * The bind list is a list of undiscovered (potentially non-existent) nodes
1990 * that we have saved binding information on. This information is used when
1991 * nodes transition from the unmapped to the mapped list.
1992 */
1993 /* For UNUSED_NODE state, the node has just been allocated .
1994 * For PLOGI_ISSUE and REG_LOGIN_ISSUE, the node is on
1995 * the PLOGI list. For REG_LOGIN_COMPL, the node is taken off the PLOGI list
1996 * and put on the unmapped list. For ADISC processing, the node is taken off
1997 * the ADISC list and placed on either the mapped or unmapped list (depending
1998 * on its previous state). Once on the unmapped list, a PRLI is issued and the
1999 * state changed to PRLI_ISSUE. When the PRLI completion occurs, the state is
2000 * changed to UNMAPPED_NODE. If the completion indicates a mapped
2001 * node, the node is taken off the unmapped list. The binding list is checked
2002 * for a valid binding, or a binding is automatically assigned. If binding
2003 * assignment is unsuccessful, the node is left on the unmapped list. If
2004 * binding assignment is successful, the associated binding list entry (if
2005 * any) is removed, and the node is placed on the mapped list.
2006 */
2007 /*
2008 * For a Link Down, all nodes on the ADISC, PLOGI, unmapped or mapped
2009 * lists will receive a DEVICE_RECOVERY event. If the linkdown or devloss timers
2010 * expire, all effected nodes will receive a DEVICE_RM event.
2011 */
2012 /*
2013 * For a Link Up or RSCN, all nodes will move from the mapped / unmapped lists
2014 * to either the ADISC or PLOGI list. After a Nameserver query or ALPA loopmap
2015 * check, additional nodes may be added or removed (via DEVICE_RM) to / from
2016 * the PLOGI or ADISC lists. Once the PLOGI and ADISC lists are populated,
2017 * we will first process the ADISC list. 32 entries are processed initially and
2018 * ADISC is initited for each one. Completions / Events for each node are
2019 * funnelled thru the state machine. As each node finishes ADISC processing, it
2020 * starts ADISC for any nodes waiting for ADISC processing. If no nodes are
2021 * waiting, and the ADISC list count is identically 0, then we are done. For
2022 * Link Up discovery, since all nodes on the PLOGI list are UNREG_LOGIN'ed, we
2023 * can issue a CLEAR_LA and reenable Link Events. Next we will process the PLOGI
2024 * list. 32 entries are processed initially and PLOGI is initited for each one.
2025 * Completions / Events for each node are funnelled thru the state machine. As
2026 * each node finishes PLOGI processing, it starts PLOGI for any nodes waiting
2027 * for PLOGI processing. If no nodes are waiting, and the PLOGI list count is
2028 * indentically 0, then we are done. We have now completed discovery / RSCN
2029 * handling. Upon completion, ALL nodes should be on either the mapped or
2030 * unmapped lists.
2031 */
2032
2033 static uint32_t (*lpfc_disc_action[NLP_STE_MAX_STATE * NLP_EVT_MAX_EVENT])
2034 (struct lpfc_vport *, struct lpfc_nodelist *, void *, uint32_t) = {
2035 /* Action routine Event Current State */
2036 lpfc_rcv_plogi_unused_node, /* RCV_PLOGI UNUSED_NODE */
2037 lpfc_rcv_els_unused_node, /* RCV_PRLI */
2038 lpfc_rcv_logo_unused_node, /* RCV_LOGO */
2039 lpfc_rcv_els_unused_node, /* RCV_ADISC */
2040 lpfc_rcv_els_unused_node, /* RCV_PDISC */
2041 lpfc_rcv_els_unused_node, /* RCV_PRLO */
2042 lpfc_disc_illegal, /* CMPL_PLOGI */
2043 lpfc_disc_illegal, /* CMPL_PRLI */
2044 lpfc_cmpl_logo_unused_node, /* CMPL_LOGO */
2045 lpfc_disc_illegal, /* CMPL_ADISC */
2046 lpfc_disc_illegal, /* CMPL_REG_LOGIN */
2047 lpfc_device_rm_unused_node, /* DEVICE_RM */
2048 lpfc_disc_illegal, /* DEVICE_RECOVERY */
2049
2050 lpfc_rcv_plogi_plogi_issue, /* RCV_PLOGI PLOGI_ISSUE */
2051 lpfc_rcv_prli_plogi_issue, /* RCV_PRLI */
2052 lpfc_rcv_logo_plogi_issue, /* RCV_LOGO */
2053 lpfc_rcv_els_plogi_issue, /* RCV_ADISC */
2054 lpfc_rcv_els_plogi_issue, /* RCV_PDISC */
2055 lpfc_rcv_els_plogi_issue, /* RCV_PRLO */
2056 lpfc_cmpl_plogi_plogi_issue, /* CMPL_PLOGI */
2057 lpfc_disc_illegal, /* CMPL_PRLI */
2058 lpfc_cmpl_logo_plogi_issue, /* CMPL_LOGO */
2059 lpfc_disc_illegal, /* CMPL_ADISC */
2060 lpfc_cmpl_reglogin_plogi_issue,/* CMPL_REG_LOGIN */
2061 lpfc_device_rm_plogi_issue, /* DEVICE_RM */
2062 lpfc_device_recov_plogi_issue, /* DEVICE_RECOVERY */
2063
2064 lpfc_rcv_plogi_adisc_issue, /* RCV_PLOGI ADISC_ISSUE */
2065 lpfc_rcv_prli_adisc_issue, /* RCV_PRLI */
2066 lpfc_rcv_logo_adisc_issue, /* RCV_LOGO */
2067 lpfc_rcv_padisc_adisc_issue, /* RCV_ADISC */
2068 lpfc_rcv_padisc_adisc_issue, /* RCV_PDISC */
2069 lpfc_rcv_prlo_adisc_issue, /* RCV_PRLO */
2070 lpfc_disc_illegal, /* CMPL_PLOGI */
2071 lpfc_disc_illegal, /* CMPL_PRLI */
2072 lpfc_disc_illegal, /* CMPL_LOGO */
2073 lpfc_cmpl_adisc_adisc_issue, /* CMPL_ADISC */
2074 lpfc_disc_illegal, /* CMPL_REG_LOGIN */
2075 lpfc_device_rm_adisc_issue, /* DEVICE_RM */
2076 lpfc_device_recov_adisc_issue, /* DEVICE_RECOVERY */
2077
2078 lpfc_rcv_plogi_reglogin_issue, /* RCV_PLOGI REG_LOGIN_ISSUE */
2079 lpfc_rcv_prli_reglogin_issue, /* RCV_PLOGI */
2080 lpfc_rcv_logo_reglogin_issue, /* RCV_LOGO */
2081 lpfc_rcv_padisc_reglogin_issue, /* RCV_ADISC */
2082 lpfc_rcv_padisc_reglogin_issue, /* RCV_PDISC */
2083 lpfc_rcv_prlo_reglogin_issue, /* RCV_PRLO */
2084 lpfc_cmpl_plogi_illegal, /* CMPL_PLOGI */
2085 lpfc_disc_illegal, /* CMPL_PRLI */
2086 lpfc_disc_illegal, /* CMPL_LOGO */
2087 lpfc_disc_illegal, /* CMPL_ADISC */
2088 lpfc_cmpl_reglogin_reglogin_issue,/* CMPL_REG_LOGIN */
2089 lpfc_device_rm_reglogin_issue, /* DEVICE_RM */
2090 lpfc_device_recov_reglogin_issue,/* DEVICE_RECOVERY */
2091
2092 lpfc_rcv_plogi_prli_issue, /* RCV_PLOGI PRLI_ISSUE */
2093 lpfc_rcv_prli_prli_issue, /* RCV_PRLI */
2094 lpfc_rcv_logo_prli_issue, /* RCV_LOGO */
2095 lpfc_rcv_padisc_prli_issue, /* RCV_ADISC */
2096 lpfc_rcv_padisc_prli_issue, /* RCV_PDISC */
2097 lpfc_rcv_prlo_prli_issue, /* RCV_PRLO */
2098 lpfc_cmpl_plogi_illegal, /* CMPL_PLOGI */
2099 lpfc_cmpl_prli_prli_issue, /* CMPL_PRLI */
2100 lpfc_disc_illegal, /* CMPL_LOGO */
2101 lpfc_disc_illegal, /* CMPL_ADISC */
2102 lpfc_disc_illegal, /* CMPL_REG_LOGIN */
2103 lpfc_device_rm_prli_issue, /* DEVICE_RM */
2104 lpfc_device_recov_prli_issue, /* DEVICE_RECOVERY */
2105
2106 lpfc_rcv_plogi_unmap_node, /* RCV_PLOGI UNMAPPED_NODE */
2107 lpfc_rcv_prli_unmap_node, /* RCV_PRLI */
2108 lpfc_rcv_logo_unmap_node, /* RCV_LOGO */
2109 lpfc_rcv_padisc_unmap_node, /* RCV_ADISC */
2110 lpfc_rcv_padisc_unmap_node, /* RCV_PDISC */
2111 lpfc_rcv_prlo_unmap_node, /* RCV_PRLO */
2112 lpfc_disc_illegal, /* CMPL_PLOGI */
2113 lpfc_disc_illegal, /* CMPL_PRLI */
2114 lpfc_disc_illegal, /* CMPL_LOGO */
2115 lpfc_disc_illegal, /* CMPL_ADISC */
2116 lpfc_disc_illegal, /* CMPL_REG_LOGIN */
2117 lpfc_disc_illegal, /* DEVICE_RM */
2118 lpfc_device_recov_unmap_node, /* DEVICE_RECOVERY */
2119
2120 lpfc_rcv_plogi_mapped_node, /* RCV_PLOGI MAPPED_NODE */
2121 lpfc_rcv_prli_mapped_node, /* RCV_PRLI */
2122 lpfc_rcv_logo_mapped_node, /* RCV_LOGO */
2123 lpfc_rcv_padisc_mapped_node, /* RCV_ADISC */
2124 lpfc_rcv_padisc_mapped_node, /* RCV_PDISC */
2125 lpfc_rcv_prlo_mapped_node, /* RCV_PRLO */
2126 lpfc_disc_illegal, /* CMPL_PLOGI */
2127 lpfc_disc_illegal, /* CMPL_PRLI */
2128 lpfc_disc_illegal, /* CMPL_LOGO */
2129 lpfc_disc_illegal, /* CMPL_ADISC */
2130 lpfc_disc_illegal, /* CMPL_REG_LOGIN */
2131 lpfc_disc_illegal, /* DEVICE_RM */
2132 lpfc_device_recov_mapped_node, /* DEVICE_RECOVERY */
2133
2134 lpfc_rcv_plogi_npr_node, /* RCV_PLOGI NPR_NODE */
2135 lpfc_rcv_prli_npr_node, /* RCV_PRLI */
2136 lpfc_rcv_logo_npr_node, /* RCV_LOGO */
2137 lpfc_rcv_padisc_npr_node, /* RCV_ADISC */
2138 lpfc_rcv_padisc_npr_node, /* RCV_PDISC */
2139 lpfc_rcv_prlo_npr_node, /* RCV_PRLO */
2140 lpfc_cmpl_plogi_npr_node, /* CMPL_PLOGI */
2141 lpfc_cmpl_prli_npr_node, /* CMPL_PRLI */
2142 lpfc_cmpl_logo_npr_node, /* CMPL_LOGO */
2143 lpfc_cmpl_adisc_npr_node, /* CMPL_ADISC */
2144 lpfc_cmpl_reglogin_npr_node, /* CMPL_REG_LOGIN */
2145 lpfc_device_rm_npr_node, /* DEVICE_RM */
2146 lpfc_device_recov_npr_node, /* DEVICE_RECOVERY */
2147 };
2148
2149 int
2150 lpfc_disc_state_machine(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2151 void *arg, uint32_t evt)
2152 {
2153 uint32_t cur_state, rc;
2154 uint32_t(*func) (struct lpfc_vport *, struct lpfc_nodelist *, void *,
2155 uint32_t);
2156 uint32_t got_ndlp = 0;
2157
2158 if (lpfc_nlp_get(ndlp))
2159 got_ndlp = 1;
2160
2161 cur_state = ndlp->nlp_state;
2162
2163 /* DSM in event <evt> on NPort <nlp_DID> in state <cur_state> */
2164 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
2165 "0211 DSM in event x%x on NPort x%x in "
2166 "state %d Data: x%x\n",
2167 evt, ndlp->nlp_DID, cur_state, ndlp->nlp_flag);
2168
2169 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_DSM,
2170 "DSM in: evt:%d ste:%d did:x%x",
2171 evt, cur_state, ndlp->nlp_DID);
2172
2173 func = lpfc_disc_action[(cur_state * NLP_EVT_MAX_EVENT) + evt];
2174 rc = (func) (vport, ndlp, arg, evt);
2175
2176 /* DSM out state <rc> on NPort <nlp_DID> */
2177 if (got_ndlp) {
2178 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
2179 "0212 DSM out state %d on NPort x%x Data: x%x\n",
2180 rc, ndlp->nlp_DID, ndlp->nlp_flag);
2181
2182 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_DSM,
2183 "DSM out: ste:%d did:x%x flg:x%x",
2184 rc, ndlp->nlp_DID, ndlp->nlp_flag);
2185 /* Decrement the ndlp reference count held for this function */
2186 lpfc_nlp_put(ndlp);
2187 } else {
2188 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
2189 "0212 DSM out state %d on NPort free\n", rc);
2190
2191 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_DSM,
2192 "DSM out: ste:%d did:x%x flg:x%x",
2193 rc, 0, 0);
2194 }
2195
2196 return rc;
2197 }
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