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[SCSI] lpfc 8.2.6 : Multiple discovery fixes
[linux-2.6/libata-dev.git] / drivers / scsi / lpfc / lpfc_nportdisc.c
blobd08c4c890744d30b05da9b60dc018e71c2af8bcc
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 }
473 } else if ((ndlp->nlp_state == NLP_STE_PLOGI_ISSUE) &&
474 (ndlp->nlp_flag & NLP_NPR_2B_DISC) &&
475 (vport->num_disc_nodes)) {
476 spin_lock_irq(shost->host_lock);
477 ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
478 spin_unlock_irq(shost->host_lock);
479 /* Check to see if there are more
480 * PLOGIs to be sent
481 */
482 lpfc_more_plogi(vport);
483 if (vport->num_disc_nodes == 0) {
484 spin_lock_irq(shost->host_lock);
485 vport->fc_flag &= ~FC_NDISC_ACTIVE;
486 spin_unlock_irq(shost->host_lock);
487 lpfc_can_disctmo(vport);
488 lpfc_end_rscn(vport);
489 }
490 }
491
492 lpfc_els_rsp_acc(vport, ELS_CMD_PLOGI, cmdiocb, ndlp, mbox);
493 return 1;
494
495 out:
496 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
497 stat.un.b.lsRjtRsnCodeExp = LSEXP_OUT_OF_RESOURCE;
498 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
499 return 0;
500 }
501
502 static int
503 lpfc_rcv_padisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
504 struct lpfc_iocbq *cmdiocb)
505 {
506 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
507 struct lpfc_dmabuf *pcmd;
508 struct serv_parm *sp;
509 struct lpfc_name *pnn, *ppn;
510 struct ls_rjt stat;
511 ADISC *ap;
512 IOCB_t *icmd;
513 uint32_t *lp;
514 uint32_t cmd;
515
516 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
517 lp = (uint32_t *) pcmd->virt;
518
519 cmd = *lp++;
520 if (cmd == ELS_CMD_ADISC) {
521 ap = (ADISC *) lp;
522 pnn = (struct lpfc_name *) & ap->nodeName;
523 ppn = (struct lpfc_name *) & ap->portName;
524 } else {
525 sp = (struct serv_parm *) lp;
526 pnn = (struct lpfc_name *) & sp->nodeName;
527 ppn = (struct lpfc_name *) & sp->portName;
528 }
529
530 icmd = &cmdiocb->iocb;
531 if (icmd->ulpStatus == 0 && lpfc_check_adisc(vport, ndlp, pnn, ppn)) {
532 if (cmd == ELS_CMD_ADISC) {
533 lpfc_els_rsp_adisc_acc(vport, cmdiocb, ndlp);
534 } else {
535 lpfc_els_rsp_acc(vport, ELS_CMD_PLOGI, cmdiocb, ndlp,
536 NULL);
537 }
538 return 1;
539 }
540 /* Reject this request because invalid parameters */
541 stat.un.b.lsRjtRsvd0 = 0;
542 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
543 stat.un.b.lsRjtRsnCodeExp = LSEXP_SPARM_OPTIONS;
544 stat.un.b.vendorUnique = 0;
545 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
546
547 /* 1 sec timeout */
548 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ);
549
550 spin_lock_irq(shost->host_lock);
551 ndlp->nlp_flag |= NLP_DELAY_TMO;
552 spin_unlock_irq(shost->host_lock);
553 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
554 ndlp->nlp_prev_state = ndlp->nlp_state;
555 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
556 return 0;
557 }
558
559 static int
560 lpfc_rcv_logo(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
561 struct lpfc_iocbq *cmdiocb, uint32_t els_cmd)
562 {
563 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
564
565 /* Put ndlp in NPR state with 1 sec timeout for plogi, ACC logo */
566 /* Only call LOGO ACC for first LOGO, this avoids sending unnecessary
567 * PLOGIs during LOGO storms from a device.
568 */
569 spin_lock_irq(shost->host_lock);
570 ndlp->nlp_flag |= NLP_LOGO_ACC;
571 spin_unlock_irq(shost->host_lock);
572 if (els_cmd == ELS_CMD_PRLO)
573 lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
574 else
575 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
576
577 if (!(ndlp->nlp_type & NLP_FABRIC) ||
578 (ndlp->nlp_state == NLP_STE_ADISC_ISSUE)) {
579 /* Only try to re-login if this is NOT a Fabric Node */
580 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ * 1);
581 spin_lock_irq(shost->host_lock);
582 ndlp->nlp_flag |= NLP_DELAY_TMO;
583 spin_unlock_irq(shost->host_lock);
584
585 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
586 }
587 ndlp->nlp_prev_state = ndlp->nlp_state;
588 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
589
590 spin_lock_irq(shost->host_lock);
591 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
592 spin_unlock_irq(shost->host_lock);
593 /* The driver has to wait until the ACC completes before it continues
594 * processing the LOGO. The action will resume in
595 * lpfc_cmpl_els_logo_acc routine. Since part of processing includes an
596 * unreg_login, the driver waits so the ACC does not get aborted.
597 */
598 return 0;
599 }
600
601 static void
602 lpfc_rcv_prli(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
603 struct lpfc_iocbq *cmdiocb)
604 {
605 struct lpfc_dmabuf *pcmd;
606 uint32_t *lp;
607 PRLI *npr;
608 struct fc_rport *rport = ndlp->rport;
609 u32 roles;
610
611 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
612 lp = (uint32_t *) pcmd->virt;
613 npr = (PRLI *) ((uint8_t *) lp + sizeof (uint32_t));
614
615 ndlp->nlp_type &= ~(NLP_FCP_TARGET | NLP_FCP_INITIATOR);
616 ndlp->nlp_fcp_info &= ~NLP_FCP_2_DEVICE;
617 if (npr->prliType == PRLI_FCP_TYPE) {
618 if (npr->initiatorFunc)
619 ndlp->nlp_type |= NLP_FCP_INITIATOR;
620 if (npr->targetFunc)
621 ndlp->nlp_type |= NLP_FCP_TARGET;
622 if (npr->Retry)
623 ndlp->nlp_fcp_info |= NLP_FCP_2_DEVICE;
624 }
625 if (rport) {
626 /* We need to update the rport role values */
627 roles = FC_RPORT_ROLE_UNKNOWN;
628 if (ndlp->nlp_type & NLP_FCP_INITIATOR)
629 roles |= FC_RPORT_ROLE_FCP_INITIATOR;
630 if (ndlp->nlp_type & NLP_FCP_TARGET)
631 roles |= FC_RPORT_ROLE_FCP_TARGET;
632
633 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
634 "rport rolechg: role:x%x did:x%x flg:x%x",
635 roles, ndlp->nlp_DID, ndlp->nlp_flag);
636
637 fc_remote_port_rolechg(rport, roles);
638 }
639 }
640
641 static uint32_t
642 lpfc_disc_set_adisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
643 {
644 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
645
646 if (!ndlp->nlp_rpi) {
647 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
648 return 0;
649 }
650
651 if (!(vport->fc_flag & FC_PT2PT)) {
652 /* Check config parameter use-adisc or FCP-2 */
653 if ((vport->cfg_use_adisc && (vport->fc_flag & FC_RSCN_MODE)) ||
654 ndlp->nlp_fcp_info & NLP_FCP_2_DEVICE) {
655 spin_lock_irq(shost->host_lock);
656 ndlp->nlp_flag |= NLP_NPR_ADISC;
657 spin_unlock_irq(shost->host_lock);
658 return 1;
659 }
660 }
661 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
662 lpfc_unreg_rpi(vport, ndlp);
663 return 0;
664 }
665
666 static uint32_t
667 lpfc_disc_illegal(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
668 void *arg, uint32_t evt)
669 {
670 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
671 "0271 Illegal State Transition: node x%x "
672 "event x%x, state x%x Data: x%x x%x\n",
673 ndlp->nlp_DID, evt, ndlp->nlp_state, ndlp->nlp_rpi,
674 ndlp->nlp_flag);
675 return ndlp->nlp_state;
676 }
677
678 static uint32_t
679 lpfc_cmpl_plogi_illegal(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
680 void *arg, uint32_t evt)
681 {
682 /* This transition is only legal if we previously
683 * rcv'ed a PLOGI. Since we don't want 2 discovery threads
684 * working on the same NPortID, do nothing for this thread
685 * to stop it.
686 */
687 if (!(ndlp->nlp_flag & NLP_RCV_PLOGI)) {
688 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
689 "0272 Illegal State Transition: node x%x "
690 "event x%x, state x%x Data: x%x x%x\n",
691 ndlp->nlp_DID, evt, ndlp->nlp_state, ndlp->nlp_rpi,
692 ndlp->nlp_flag);
693 }
694 return ndlp->nlp_state;
695 }
696
697 /* Start of Discovery State Machine routines */
698
699 static uint32_t
700 lpfc_rcv_plogi_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
701 void *arg, uint32_t evt)
702 {
703 struct lpfc_iocbq *cmdiocb;
704
705 cmdiocb = (struct lpfc_iocbq *) arg;
706
707 if (lpfc_rcv_plogi(vport, ndlp, cmdiocb)) {
708 return ndlp->nlp_state;
709 }
710 return NLP_STE_FREED_NODE;
711 }
712
713 static uint32_t
714 lpfc_rcv_els_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
715 void *arg, uint32_t evt)
716 {
717 lpfc_issue_els_logo(vport, ndlp, 0);
718 return ndlp->nlp_state;
719 }
720
721 static uint32_t
722 lpfc_rcv_logo_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
723 void *arg, uint32_t evt)
724 {
725 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
726 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
727
728 spin_lock_irq(shost->host_lock);
729 ndlp->nlp_flag |= NLP_LOGO_ACC;
730 spin_unlock_irq(shost->host_lock);
731 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
732
733 return ndlp->nlp_state;
734 }
735
736 static uint32_t
737 lpfc_cmpl_logo_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
738 void *arg, uint32_t evt)
739 {
740 return NLP_STE_FREED_NODE;
741 }
742
743 static uint32_t
744 lpfc_device_rm_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
745 void *arg, uint32_t evt)
746 {
747 return NLP_STE_FREED_NODE;
748 }
749
750 static uint32_t
751 lpfc_rcv_plogi_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
752 void *arg, uint32_t evt)
753 {
754 struct lpfc_hba *phba = vport->phba;
755 struct lpfc_iocbq *cmdiocb = arg;
756 struct lpfc_dmabuf *pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
757 uint32_t *lp = (uint32_t *) pcmd->virt;
758 struct serv_parm *sp = (struct serv_parm *) (lp + 1);
759 struct ls_rjt stat;
760 int port_cmp;
761
762 memset(&stat, 0, sizeof (struct ls_rjt));
763
764 /* For a PLOGI, we only accept if our portname is less
765 * than the remote portname.
766 */
767 phba->fc_stat.elsLogiCol++;
768 port_cmp = memcmp(&vport->fc_portname, &sp->portName,
769 sizeof(struct lpfc_name));
770
771 if (port_cmp >= 0) {
772 /* Reject this request because the remote node will accept
773 ours */
774 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
775 stat.un.b.lsRjtRsnCodeExp = LSEXP_CMD_IN_PROGRESS;
776 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
777 NULL);
778 } else {
779 lpfc_rcv_plogi(vport, ndlp, cmdiocb);
780 } /* If our portname was less */
781
782 return ndlp->nlp_state;
783 }
784
785 static uint32_t
786 lpfc_rcv_prli_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
787 void *arg, uint32_t evt)
788 {
789 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
790 struct ls_rjt stat;
791
792 memset(&stat, 0, sizeof (struct ls_rjt));
793 stat.un.b.lsRjtRsnCode = LSRJT_LOGICAL_BSY;
794 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
795 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
796 return ndlp->nlp_state;
797 }
798
799 static uint32_t
800 lpfc_rcv_logo_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
801 void *arg, uint32_t evt)
802 {
803 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
804
805 /* software abort outstanding PLOGI */
806 lpfc_els_abort(vport->phba, ndlp);
807
808 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
809 return ndlp->nlp_state;
810 }
811
812 static uint32_t
813 lpfc_rcv_els_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
814 void *arg, uint32_t evt)
815 {
816 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
817 struct lpfc_hba *phba = vport->phba;
818 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
819
820 /* software abort outstanding PLOGI */
821 lpfc_els_abort(phba, ndlp);
822
823 if (evt == NLP_EVT_RCV_LOGO) {
824 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
825 } else {
826 lpfc_issue_els_logo(vport, ndlp, 0);
827 }
828
829 /* Put ndlp in npr state set plogi timer for 1 sec */
830 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ * 1);
831 spin_lock_irq(shost->host_lock);
832 ndlp->nlp_flag |= NLP_DELAY_TMO;
833 spin_unlock_irq(shost->host_lock);
834 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
835 ndlp->nlp_prev_state = NLP_STE_PLOGI_ISSUE;
836 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
837
838 return ndlp->nlp_state;
839 }
840
841 static uint32_t
842 lpfc_cmpl_plogi_plogi_issue(struct lpfc_vport *vport,
843 struct lpfc_nodelist *ndlp,
844 void *arg,
845 uint32_t evt)
846 {
847 struct lpfc_hba *phba = vport->phba;
848 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
849 struct lpfc_iocbq *cmdiocb, *rspiocb;
850 struct lpfc_dmabuf *pcmd, *prsp, *mp;
851 uint32_t *lp;
852 IOCB_t *irsp;
853 struct serv_parm *sp;
854 LPFC_MBOXQ_t *mbox;
855
856 cmdiocb = (struct lpfc_iocbq *) arg;
857 rspiocb = cmdiocb->context_un.rsp_iocb;
858
859 if (ndlp->nlp_flag & NLP_ACC_REGLOGIN) {
860 /* Recovery from PLOGI collision logic */
861 return ndlp->nlp_state;
862 }
863
864 irsp = &rspiocb->iocb;
865
866 if (irsp->ulpStatus)
867 goto out;
868
869 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
870
871 prsp = list_get_first(&pcmd->list, struct lpfc_dmabuf, list);
872
873 lp = (uint32_t *) prsp->virt;
874 sp = (struct serv_parm *) ((uint8_t *) lp + sizeof (uint32_t));
875
876 /* Some switches have FDMI servers returning 0 for WWN */
877 if ((ndlp->nlp_DID != FDMI_DID) &&
878 (wwn_to_u64(sp->portName.u.wwn) == 0 ||
879 wwn_to_u64(sp->nodeName.u.wwn) == 0)) {
880 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
881 "0142 PLOGI RSP: Invalid WWN.\n");
882 goto out;
883 }
884 if (!lpfc_check_sparm(vport, ndlp, sp, CLASS3))
885 goto out;
886 /* PLOGI chkparm OK */
887 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
888 "0121 PLOGI chkparm OK Data: x%x x%x x%x x%x\n",
889 ndlp->nlp_DID, ndlp->nlp_state,
890 ndlp->nlp_flag, ndlp->nlp_rpi);
891 if (vport->cfg_fcp_class == 2 && (sp->cls2.classValid))
892 ndlp->nlp_fcp_info |= CLASS2;
893 else
894 ndlp->nlp_fcp_info |= CLASS3;
895
896 ndlp->nlp_class_sup = 0;
897 if (sp->cls1.classValid)
898 ndlp->nlp_class_sup |= FC_COS_CLASS1;
899 if (sp->cls2.classValid)
900 ndlp->nlp_class_sup |= FC_COS_CLASS2;
901 if (sp->cls3.classValid)
902 ndlp->nlp_class_sup |= FC_COS_CLASS3;
903 if (sp->cls4.classValid)
904 ndlp->nlp_class_sup |= FC_COS_CLASS4;
905 ndlp->nlp_maxframe =
906 ((sp->cmn.bbRcvSizeMsb & 0x0F) << 8) | sp->cmn.bbRcvSizeLsb;
907
908 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
909 if (!mbox) {
910 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
911 "0133 PLOGI: no memory for reg_login "
912 "Data: x%x x%x x%x x%x\n",
913 ndlp->nlp_DID, ndlp->nlp_state,
914 ndlp->nlp_flag, ndlp->nlp_rpi);
915 goto out;
916 }
917
918 lpfc_unreg_rpi(vport, ndlp);
919
920 if (lpfc_reg_login(phba, vport->vpi, irsp->un.elsreq64.remoteID,
921 (uint8_t *) sp, mbox, 0) == 0) {
922 switch (ndlp->nlp_DID) {
923 case NameServer_DID:
924 mbox->mbox_cmpl = lpfc_mbx_cmpl_ns_reg_login;
925 break;
926 case FDMI_DID:
927 mbox->mbox_cmpl = lpfc_mbx_cmpl_fdmi_reg_login;
928 break;
929 default:
930 mbox->mbox_cmpl = lpfc_mbx_cmpl_reg_login;
931 }
932 mbox->context2 = lpfc_nlp_get(ndlp);
933 mbox->vport = vport;
934 if (lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT)
935 != MBX_NOT_FINISHED) {
936 lpfc_nlp_set_state(vport, ndlp,
937 NLP_STE_REG_LOGIN_ISSUE);
938 return ndlp->nlp_state;
939 }
940 /* decrement node reference count to the failed mbox
941 * command
942 */
943 lpfc_nlp_put(ndlp);
944 mp = (struct lpfc_dmabuf *) mbox->context1;
945 lpfc_mbuf_free(phba, mp->virt, mp->phys);
946 kfree(mp);
947 mempool_free(mbox, phba->mbox_mem_pool);
948
949 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
950 "0134 PLOGI: cannot issue reg_login "
951 "Data: x%x x%x x%x x%x\n",
952 ndlp->nlp_DID, ndlp->nlp_state,
953 ndlp->nlp_flag, ndlp->nlp_rpi);
954 } else {
955 mempool_free(mbox, phba->mbox_mem_pool);
956
957 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
958 "0135 PLOGI: cannot format reg_login "
959 "Data: x%x x%x x%x x%x\n",
960 ndlp->nlp_DID, ndlp->nlp_state,
961 ndlp->nlp_flag, ndlp->nlp_rpi);
962 }
963
964
965 out:
966 if (ndlp->nlp_DID == NameServer_DID) {
967 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
968 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
969 "0261 Cannot Register NameServer login\n");
970 }
971
972 spin_lock_irq(shost->host_lock);
973 ndlp->nlp_flag |= NLP_DEFER_RM;
974 spin_unlock_irq(shost->host_lock);
975 return NLP_STE_FREED_NODE;
976 }
977
978 static uint32_t
979 lpfc_cmpl_logo_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
980 void *arg, uint32_t evt)
981 {
982 return ndlp->nlp_state;
983 }
984
985 static uint32_t
986 lpfc_cmpl_reglogin_plogi_issue(struct lpfc_vport *vport,
987 struct lpfc_nodelist *ndlp, void *arg, uint32_t evt)
988 {
989 return ndlp->nlp_state;
990 }
991
992 static uint32_t
993 lpfc_device_rm_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
994 void *arg, uint32_t evt)
995 {
996 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
997
998 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
999 spin_lock_irq(shost->host_lock);
1000 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1001 spin_unlock_irq(shost->host_lock);
1002 return ndlp->nlp_state;
1003 } else {
1004 /* software abort outstanding PLOGI */
1005 lpfc_els_abort(vport->phba, ndlp);
1006
1007 lpfc_drop_node(vport, ndlp);
1008 return NLP_STE_FREED_NODE;
1009 }
1010 }
1011
1012 static uint32_t
1013 lpfc_device_recov_plogi_issue(struct lpfc_vport *vport,
1014 struct lpfc_nodelist *ndlp,
1015 void *arg,
1016 uint32_t evt)
1017 {
1018 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1019 struct lpfc_hba *phba = vport->phba;
1020
1021 /* Don't do anything that will mess up processing of the
1022 * previous RSCN.
1023 */
1024 if (vport->fc_flag & FC_RSCN_DEFERRED)
1025 return ndlp->nlp_state;
1026
1027 /* software abort outstanding PLOGI */
1028 lpfc_els_abort(phba, ndlp);
1029
1030 ndlp->nlp_prev_state = NLP_STE_PLOGI_ISSUE;
1031 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1032 spin_lock_irq(shost->host_lock);
1033 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1034 spin_unlock_irq(shost->host_lock);
1035
1036 return ndlp->nlp_state;
1037 }
1038
1039 static uint32_t
1040 lpfc_rcv_plogi_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1041 void *arg, uint32_t evt)
1042 {
1043 struct lpfc_hba *phba = vport->phba;
1044 struct lpfc_iocbq *cmdiocb;
1045
1046 /* software abort outstanding ADISC */
1047 lpfc_els_abort(phba, ndlp);
1048
1049 cmdiocb = (struct lpfc_iocbq *) arg;
1050
1051 if (lpfc_rcv_plogi(vport, ndlp, cmdiocb))
1052 return ndlp->nlp_state;
1053
1054 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1055 lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
1056 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
1057
1058 return ndlp->nlp_state;
1059 }
1060
1061 static uint32_t
1062 lpfc_rcv_prli_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1063 void *arg, uint32_t evt)
1064 {
1065 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1066
1067 lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1068 return ndlp->nlp_state;
1069 }
1070
1071 static uint32_t
1072 lpfc_rcv_logo_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1073 void *arg, uint32_t evt)
1074 {
1075 struct lpfc_hba *phba = vport->phba;
1076 struct lpfc_iocbq *cmdiocb;
1077
1078 cmdiocb = (struct lpfc_iocbq *) arg;
1079
1080 /* software abort outstanding ADISC */
1081 lpfc_els_abort(phba, ndlp);
1082
1083 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1084 return ndlp->nlp_state;
1085 }
1086
1087 static uint32_t
1088 lpfc_rcv_padisc_adisc_issue(struct lpfc_vport *vport,
1089 struct lpfc_nodelist *ndlp,
1090 void *arg, uint32_t evt)
1091 {
1092 struct lpfc_iocbq *cmdiocb;
1093
1094 cmdiocb = (struct lpfc_iocbq *) arg;
1095
1096 lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1097 return ndlp->nlp_state;
1098 }
1099
1100 static uint32_t
1101 lpfc_rcv_prlo_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1102 void *arg, uint32_t evt)
1103 {
1104 struct lpfc_iocbq *cmdiocb;
1105
1106 cmdiocb = (struct lpfc_iocbq *) arg;
1107
1108 /* Treat like rcv logo */
1109 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_PRLO);
1110 return ndlp->nlp_state;
1111 }
1112
1113 static uint32_t
1114 lpfc_cmpl_adisc_adisc_issue(struct lpfc_vport *vport,
1115 struct lpfc_nodelist *ndlp,
1116 void *arg, uint32_t evt)
1117 {
1118 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1119 struct lpfc_hba *phba = vport->phba;
1120 struct lpfc_iocbq *cmdiocb, *rspiocb;
1121 IOCB_t *irsp;
1122 ADISC *ap;
1123
1124 cmdiocb = (struct lpfc_iocbq *) arg;
1125 rspiocb = cmdiocb->context_un.rsp_iocb;
1126
1127 ap = (ADISC *)lpfc_check_elscmpl_iocb(phba, cmdiocb, rspiocb);
1128 irsp = &rspiocb->iocb;
1129
1130 if ((irsp->ulpStatus) ||
1131 (!lpfc_check_adisc(vport, ndlp, &ap->nodeName, &ap->portName))) {
1132 /* 1 sec timeout */
1133 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ);
1134 spin_lock_irq(shost->host_lock);
1135 ndlp->nlp_flag |= NLP_DELAY_TMO;
1136 spin_unlock_irq(shost->host_lock);
1137 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
1138
1139 memset(&ndlp->nlp_nodename, 0, sizeof(struct lpfc_name));
1140 memset(&ndlp->nlp_portname, 0, sizeof(struct lpfc_name));
1141
1142 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1143 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1144 lpfc_unreg_rpi(vport, ndlp);
1145 return ndlp->nlp_state;
1146 }
1147
1148 if (ndlp->nlp_type & NLP_FCP_TARGET) {
1149 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1150 lpfc_nlp_set_state(vport, ndlp, NLP_STE_MAPPED_NODE);
1151 } else {
1152 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1153 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1154 }
1155 return ndlp->nlp_state;
1156 }
1157
1158 static uint32_t
1159 lpfc_device_rm_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1160 void *arg, uint32_t evt)
1161 {
1162 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1163
1164 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1165 spin_lock_irq(shost->host_lock);
1166 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1167 spin_unlock_irq(shost->host_lock);
1168 return ndlp->nlp_state;
1169 } else {
1170 /* software abort outstanding ADISC */
1171 lpfc_els_abort(vport->phba, ndlp);
1172
1173 lpfc_drop_node(vport, ndlp);
1174 return NLP_STE_FREED_NODE;
1175 }
1176 }
1177
1178 static uint32_t
1179 lpfc_device_recov_adisc_issue(struct lpfc_vport *vport,
1180 struct lpfc_nodelist *ndlp,
1181 void *arg,
1182 uint32_t evt)
1183 {
1184 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1185 struct lpfc_hba *phba = vport->phba;
1186
1187 /* Don't do anything that will mess up processing of the
1188 * previous RSCN.
1189 */
1190 if (vport->fc_flag & FC_RSCN_DEFERRED)
1191 return ndlp->nlp_state;
1192
1193 /* software abort outstanding ADISC */
1194 lpfc_els_abort(phba, ndlp);
1195
1196 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1197 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1198 spin_lock_irq(shost->host_lock);
1199 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1200 spin_unlock_irq(shost->host_lock);
1201 lpfc_disc_set_adisc(vport, ndlp);
1202 return ndlp->nlp_state;
1203 }
1204
1205 static uint32_t
1206 lpfc_rcv_plogi_reglogin_issue(struct lpfc_vport *vport,
1207 struct lpfc_nodelist *ndlp,
1208 void *arg,
1209 uint32_t evt)
1210 {
1211 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1212
1213 lpfc_rcv_plogi(vport, ndlp, cmdiocb);
1214 return ndlp->nlp_state;
1215 }
1216
1217 static uint32_t
1218 lpfc_rcv_prli_reglogin_issue(struct lpfc_vport *vport,
1219 struct lpfc_nodelist *ndlp,
1220 void *arg,
1221 uint32_t evt)
1222 {
1223 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1224
1225 lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1226 return ndlp->nlp_state;
1227 }
1228
1229 static uint32_t
1230 lpfc_rcv_logo_reglogin_issue(struct lpfc_vport *vport,
1231 struct lpfc_nodelist *ndlp,
1232 void *arg,
1233 uint32_t evt)
1234 {
1235 struct lpfc_hba *phba = vport->phba;
1236 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1237 LPFC_MBOXQ_t *mb;
1238 LPFC_MBOXQ_t *nextmb;
1239 struct lpfc_dmabuf *mp;
1240
1241 cmdiocb = (struct lpfc_iocbq *) arg;
1242
1243 /* cleanup any ndlp on mbox q waiting for reglogin cmpl */
1244 if ((mb = phba->sli.mbox_active)) {
1245 if ((mb->mb.mbxCommand == MBX_REG_LOGIN64) &&
1246 (ndlp == (struct lpfc_nodelist *) mb->context2)) {
1247 lpfc_nlp_put(ndlp);
1248 mb->context2 = NULL;
1249 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
1250 }
1251 }
1252
1253 spin_lock_irq(&phba->hbalock);
1254 list_for_each_entry_safe(mb, nextmb, &phba->sli.mboxq, list) {
1255 if ((mb->mb.mbxCommand == MBX_REG_LOGIN64) &&
1256 (ndlp == (struct lpfc_nodelist *) mb->context2)) {
1257 mp = (struct lpfc_dmabuf *) (mb->context1);
1258 if (mp) {
1259 __lpfc_mbuf_free(phba, mp->virt, mp->phys);
1260 kfree(mp);
1261 }
1262 lpfc_nlp_put(ndlp);
1263 list_del(&mb->list);
1264 mempool_free(mb, phba->mbox_mem_pool);
1265 }
1266 }
1267 spin_unlock_irq(&phba->hbalock);
1268
1269 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1270 return ndlp->nlp_state;
1271 }
1272
1273 static uint32_t
1274 lpfc_rcv_padisc_reglogin_issue(struct lpfc_vport *vport,
1275 struct lpfc_nodelist *ndlp,
1276 void *arg,
1277 uint32_t evt)
1278 {
1279 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1280
1281 lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1282 return ndlp->nlp_state;
1283 }
1284
1285 static uint32_t
1286 lpfc_rcv_prlo_reglogin_issue(struct lpfc_vport *vport,
1287 struct lpfc_nodelist *ndlp,
1288 void *arg,
1289 uint32_t evt)
1290 {
1291 struct lpfc_iocbq *cmdiocb;
1292
1293 cmdiocb = (struct lpfc_iocbq *) arg;
1294 lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
1295 return ndlp->nlp_state;
1296 }
1297
1298 static uint32_t
1299 lpfc_cmpl_reglogin_reglogin_issue(struct lpfc_vport *vport,
1300 struct lpfc_nodelist *ndlp,
1301 void *arg,
1302 uint32_t evt)
1303 {
1304 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1305 LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg;
1306 MAILBOX_t *mb = &pmb->mb;
1307 uint32_t did = mb->un.varWords[1];
1308
1309 if (mb->mbxStatus) {
1310 /* RegLogin failed */
1311 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
1312 "0246 RegLogin failed Data: x%x x%x x%x\n",
1313 did, mb->mbxStatus, vport->port_state);
1314 /*
1315 * If RegLogin failed due to lack of HBA resources do not
1316 * retry discovery.
1317 */
1318 if (mb->mbxStatus == MBXERR_RPI_FULL) {
1319 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1320 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1321 return ndlp->nlp_state;
1322 }
1323
1324 /* Put ndlp in npr state set plogi timer for 1 sec */
1325 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ * 1);
1326 spin_lock_irq(shost->host_lock);
1327 ndlp->nlp_flag |= NLP_DELAY_TMO;
1328 spin_unlock_irq(shost->host_lock);
1329 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
1330
1331 lpfc_issue_els_logo(vport, ndlp, 0);
1332 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1333 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1334 return ndlp->nlp_state;
1335 }
1336
1337 ndlp->nlp_rpi = mb->un.varWords[0];
1338
1339 /* Only if we are not a fabric nport do we issue PRLI */
1340 if (!(ndlp->nlp_type & NLP_FABRIC)) {
1341 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1342 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PRLI_ISSUE);
1343 lpfc_issue_els_prli(vport, ndlp, 0);
1344 } else {
1345 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1346 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1347 }
1348 return ndlp->nlp_state;
1349 }
1350
1351 static uint32_t
1352 lpfc_device_rm_reglogin_issue(struct lpfc_vport *vport,
1353 struct lpfc_nodelist *ndlp,
1354 void *arg,
1355 uint32_t evt)
1356 {
1357 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1358
1359 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1360 spin_lock_irq(shost->host_lock);
1361 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1362 spin_unlock_irq(shost->host_lock);
1363 return ndlp->nlp_state;
1364 } else {
1365 lpfc_drop_node(vport, ndlp);
1366 return NLP_STE_FREED_NODE;
1367 }
1368 }
1369
1370 static uint32_t
1371 lpfc_device_recov_reglogin_issue(struct lpfc_vport *vport,
1372 struct lpfc_nodelist *ndlp,
1373 void *arg,
1374 uint32_t evt)
1375 {
1376 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1377
1378 /* Don't do anything that will mess up processing of the
1379 * previous RSCN.
1380 */
1381 if (vport->fc_flag & FC_RSCN_DEFERRED)
1382 return ndlp->nlp_state;
1383
1384 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1385 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1386 spin_lock_irq(shost->host_lock);
1387 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1388 spin_unlock_irq(shost->host_lock);
1389 lpfc_disc_set_adisc(vport, ndlp);
1390 return ndlp->nlp_state;
1391 }
1392
1393 static uint32_t
1394 lpfc_rcv_plogi_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1395 void *arg, uint32_t evt)
1396 {
1397 struct lpfc_iocbq *cmdiocb;
1398
1399 cmdiocb = (struct lpfc_iocbq *) arg;
1400
1401 lpfc_rcv_plogi(vport, ndlp, cmdiocb);
1402 return ndlp->nlp_state;
1403 }
1404
1405 static uint32_t
1406 lpfc_rcv_prli_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1407 void *arg, uint32_t evt)
1408 {
1409 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1410
1411 lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1412 return ndlp->nlp_state;
1413 }
1414
1415 static uint32_t
1416 lpfc_rcv_logo_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1417 void *arg, uint32_t evt)
1418 {
1419 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1420
1421 /* Software abort outstanding PRLI before sending acc */
1422 lpfc_els_abort(vport->phba, ndlp);
1423
1424 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1425 return ndlp->nlp_state;
1426 }
1427
1428 static uint32_t
1429 lpfc_rcv_padisc_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1430 void *arg, uint32_t evt)
1431 {
1432 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1433
1434 lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1435 return ndlp->nlp_state;
1436 }
1437
1438 /* This routine is envoked when we rcv a PRLO request from a nport
1439 * we are logged into. We should send back a PRLO rsp setting the
1440 * appropriate bits.
1441 * NEXT STATE = PRLI_ISSUE
1442 */
1443 static uint32_t
1444 lpfc_rcv_prlo_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1445 void *arg, uint32_t evt)
1446 {
1447 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1448
1449 lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
1450 return ndlp->nlp_state;
1451 }
1452
1453 static uint32_t
1454 lpfc_cmpl_prli_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1455 void *arg, uint32_t evt)
1456 {
1457 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1458 struct lpfc_iocbq *cmdiocb, *rspiocb;
1459 struct lpfc_hba *phba = vport->phba;
1460 IOCB_t *irsp;
1461 PRLI *npr;
1462
1463 cmdiocb = (struct lpfc_iocbq *) arg;
1464 rspiocb = cmdiocb->context_un.rsp_iocb;
1465 npr = (PRLI *)lpfc_check_elscmpl_iocb(phba, cmdiocb, rspiocb);
1466
1467 irsp = &rspiocb->iocb;
1468 if (irsp->ulpStatus) {
1469 if ((vport->port_type == LPFC_NPIV_PORT) &&
1470 vport->cfg_restrict_login) {
1471 goto out;
1472 }
1473 ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
1474 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1475 return ndlp->nlp_state;
1476 }
1477
1478 /* Check out PRLI rsp */
1479 ndlp->nlp_type &= ~(NLP_FCP_TARGET | NLP_FCP_INITIATOR);
1480 ndlp->nlp_fcp_info &= ~NLP_FCP_2_DEVICE;
1481 if ((npr->acceptRspCode == PRLI_REQ_EXECUTED) &&
1482 (npr->prliType == PRLI_FCP_TYPE)) {
1483 if (npr->initiatorFunc)
1484 ndlp->nlp_type |= NLP_FCP_INITIATOR;
1485 if (npr->targetFunc)
1486 ndlp->nlp_type |= NLP_FCP_TARGET;
1487 if (npr->Retry)
1488 ndlp->nlp_fcp_info |= NLP_FCP_2_DEVICE;
1489 }
1490 if (!(ndlp->nlp_type & NLP_FCP_TARGET) &&
1491 (vport->port_type == LPFC_NPIV_PORT) &&
1492 vport->cfg_restrict_login) {
1493 out:
1494 spin_lock_irq(shost->host_lock);
1495 ndlp->nlp_flag |= NLP_TARGET_REMOVE;
1496 spin_unlock_irq(shost->host_lock);
1497 lpfc_issue_els_logo(vport, ndlp, 0);
1498
1499 ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
1500 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1501 return ndlp->nlp_state;
1502 }
1503
1504 ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
1505 if (ndlp->nlp_type & NLP_FCP_TARGET)
1506 lpfc_nlp_set_state(vport, ndlp, NLP_STE_MAPPED_NODE);
1507 else
1508 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1509 return ndlp->nlp_state;
1510 }
1511
1512 /*! lpfc_device_rm_prli_issue
1513 *
1514 * \pre
1515 * \post
1516 * \param phba
1517 * \param ndlp
1518 * \param arg
1519 * \param evt
1520 * \return uint32_t
1521 *
1522 * \b Description:
1523 * This routine is envoked when we a request to remove a nport we are in the
1524 * process of PRLIing. We should software abort outstanding prli, unreg
1525 * login, send a logout. We will change node state to UNUSED_NODE, put it
1526 * on plogi list so it can be freed when LOGO completes.
1527 *
1528 */
1529
1530 static uint32_t
1531 lpfc_device_rm_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1532 void *arg, uint32_t evt)
1533 {
1534 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1535
1536 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1537 spin_lock_irq(shost->host_lock);
1538 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1539 spin_unlock_irq(shost->host_lock);
1540 return ndlp->nlp_state;
1541 } else {
1542 /* software abort outstanding PLOGI */
1543 lpfc_els_abort(vport->phba, ndlp);
1544
1545 lpfc_drop_node(vport, ndlp);
1546 return NLP_STE_FREED_NODE;
1547 }
1548 }
1549
1550
1551 /*! lpfc_device_recov_prli_issue
1552 *
1553 * \pre
1554 * \post
1555 * \param phba
1556 * \param ndlp
1557 * \param arg
1558 * \param evt
1559 * \return uint32_t
1560 *
1561 * \b Description:
1562 * The routine is envoked when the state of a device is unknown, like
1563 * during a link down. We should remove the nodelist entry from the
1564 * unmapped list, issue a UNREG_LOGIN, do a software abort of the
1565 * outstanding PRLI command, then free the node entry.
1566 */
1567 static uint32_t
1568 lpfc_device_recov_prli_issue(struct lpfc_vport *vport,
1569 struct lpfc_nodelist *ndlp,
1570 void *arg,
1571 uint32_t evt)
1572 {
1573 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1574 struct lpfc_hba *phba = vport->phba;
1575
1576 /* Don't do anything that will mess up processing of the
1577 * previous RSCN.
1578 */
1579 if (vport->fc_flag & FC_RSCN_DEFERRED)
1580 return ndlp->nlp_state;
1581
1582 /* software abort outstanding PRLI */
1583 lpfc_els_abort(phba, ndlp);
1584
1585 ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
1586 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1587 spin_lock_irq(shost->host_lock);
1588 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1589 spin_unlock_irq(shost->host_lock);
1590 lpfc_disc_set_adisc(vport, ndlp);
1591 return ndlp->nlp_state;
1592 }
1593
1594 static uint32_t
1595 lpfc_rcv_plogi_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1596 void *arg, uint32_t evt)
1597 {
1598 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1599
1600 lpfc_rcv_plogi(vport, ndlp, cmdiocb);
1601 return ndlp->nlp_state;
1602 }
1603
1604 static uint32_t
1605 lpfc_rcv_prli_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1606 void *arg, uint32_t evt)
1607 {
1608 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1609
1610 lpfc_rcv_prli(vport, ndlp, cmdiocb);
1611 lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1612 return ndlp->nlp_state;
1613 }
1614
1615 static uint32_t
1616 lpfc_rcv_logo_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1617 void *arg, uint32_t evt)
1618 {
1619 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1620
1621 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1622 return ndlp->nlp_state;
1623 }
1624
1625 static uint32_t
1626 lpfc_rcv_padisc_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1627 void *arg, uint32_t evt)
1628 {
1629 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1630
1631 lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1632 return ndlp->nlp_state;
1633 }
1634
1635 static uint32_t
1636 lpfc_rcv_prlo_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1637 void *arg, uint32_t evt)
1638 {
1639 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1640
1641 lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
1642 return ndlp->nlp_state;
1643 }
1644
1645 static uint32_t
1646 lpfc_device_recov_unmap_node(struct lpfc_vport *vport,
1647 struct lpfc_nodelist *ndlp,
1648 void *arg,
1649 uint32_t evt)
1650 {
1651 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1652
1653 ndlp->nlp_prev_state = NLP_STE_UNMAPPED_NODE;
1654 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1655 spin_lock_irq(shost->host_lock);
1656 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1657 spin_unlock_irq(shost->host_lock);
1658 lpfc_disc_set_adisc(vport, ndlp);
1659
1660 return ndlp->nlp_state;
1661 }
1662
1663 static uint32_t
1664 lpfc_rcv_plogi_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1665 void *arg, uint32_t evt)
1666 {
1667 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1668
1669 lpfc_rcv_plogi(vport, ndlp, cmdiocb);
1670 return ndlp->nlp_state;
1671 }
1672
1673 static uint32_t
1674 lpfc_rcv_prli_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1675 void *arg, uint32_t evt)
1676 {
1677 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1678
1679 lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1680 return ndlp->nlp_state;
1681 }
1682
1683 static uint32_t
1684 lpfc_rcv_logo_mapped_node(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_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1690 return ndlp->nlp_state;
1691 }
1692
1693 static uint32_t
1694 lpfc_rcv_padisc_mapped_node(struct lpfc_vport *vport,
1695 struct lpfc_nodelist *ndlp,
1696 void *arg, uint32_t evt)
1697 {
1698 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1699
1700 lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1701 return ndlp->nlp_state;
1702 }
1703
1704 static uint32_t
1705 lpfc_rcv_prlo_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1706 void *arg, uint32_t evt)
1707 {
1708 struct lpfc_hba *phba = vport->phba;
1709 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1710
1711 /* flush the target */
1712 lpfc_sli_abort_iocb(vport, &phba->sli.ring[phba->sli.fcp_ring],
1713 ndlp->nlp_sid, 0, LPFC_CTX_TGT);
1714
1715 /* Treat like rcv logo */
1716 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_PRLO);
1717 return ndlp->nlp_state;
1718 }
1719
1720 static uint32_t
1721 lpfc_device_recov_mapped_node(struct lpfc_vport *vport,
1722 struct lpfc_nodelist *ndlp,
1723 void *arg,
1724 uint32_t evt)
1725 {
1726 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1727
1728 ndlp->nlp_prev_state = NLP_STE_MAPPED_NODE;
1729 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1730 spin_lock_irq(shost->host_lock);
1731 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1732 spin_unlock_irq(shost->host_lock);
1733 lpfc_disc_set_adisc(vport, ndlp);
1734 return ndlp->nlp_state;
1735 }
1736
1737 static uint32_t
1738 lpfc_rcv_plogi_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1739 void *arg, uint32_t evt)
1740 {
1741 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1742 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1743
1744 /* Ignore PLOGI if we have an outstanding LOGO */
1745 if (ndlp->nlp_flag & (NLP_LOGO_SND | NLP_LOGO_ACC)) {
1746 return ndlp->nlp_state;
1747 }
1748
1749 if (lpfc_rcv_plogi(vport, ndlp, cmdiocb)) {
1750 spin_lock_irq(shost->host_lock);
1751 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
1752 spin_unlock_irq(shost->host_lock);
1753 return ndlp->nlp_state;
1754 }
1755
1756 /* send PLOGI immediately, move to PLOGI issue state */
1757 if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) {
1758 ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
1759 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
1760 lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
1761 }
1762
1763 return ndlp->nlp_state;
1764 }
1765
1766 static uint32_t
1767 lpfc_rcv_prli_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1768 void *arg, uint32_t evt)
1769 {
1770 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1771 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1772 struct ls_rjt stat;
1773
1774 memset(&stat, 0, sizeof (struct ls_rjt));
1775 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
1776 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
1777 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
1778
1779 if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) {
1780 if (ndlp->nlp_flag & NLP_NPR_ADISC) {
1781 spin_lock_irq(shost->host_lock);
1782 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
1783 ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
1784 spin_unlock_irq(shost->host_lock);
1785 lpfc_nlp_set_state(vport, ndlp, NLP_STE_ADISC_ISSUE);
1786 lpfc_issue_els_adisc(vport, ndlp, 0);
1787 } else {
1788 ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
1789 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
1790 lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
1791 }
1792 }
1793 return ndlp->nlp_state;
1794 }
1795
1796 static uint32_t
1797 lpfc_rcv_logo_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1798 void *arg, uint32_t evt)
1799 {
1800 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1801
1802 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1803 return ndlp->nlp_state;
1804 }
1805
1806 static uint32_t
1807 lpfc_rcv_padisc_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1808 void *arg, uint32_t evt)
1809 {
1810 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1811
1812 lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1813
1814 /*
1815 * Do not start discovery if discovery is about to start
1816 * or discovery in progress for this node. Starting discovery
1817 * here will affect the counting of discovery threads.
1818 */
1819 if (!(ndlp->nlp_flag & NLP_DELAY_TMO) &&
1820 !(ndlp->nlp_flag & NLP_NPR_2B_DISC)) {
1821 if (ndlp->nlp_flag & NLP_NPR_ADISC) {
1822 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
1823 ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
1824 lpfc_nlp_set_state(vport, ndlp, NLP_STE_ADISC_ISSUE);
1825 lpfc_issue_els_adisc(vport, ndlp, 0);
1826 } else {
1827 ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
1828 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
1829 lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
1830 }
1831 }
1832 return ndlp->nlp_state;
1833 }
1834
1835 static uint32_t
1836 lpfc_rcv_prlo_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1837 void *arg, uint32_t evt)
1838 {
1839 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1840 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1841
1842 spin_lock_irq(shost->host_lock);
1843 ndlp->nlp_flag |= NLP_LOGO_ACC;
1844 spin_unlock_irq(shost->host_lock);
1845
1846 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
1847
1848 if ((ndlp->nlp_flag & NLP_DELAY_TMO) == 0) {
1849 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ * 1);
1850 spin_lock_irq(shost->host_lock);
1851 ndlp->nlp_flag |= NLP_DELAY_TMO;
1852 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
1853 spin_unlock_irq(shost->host_lock);
1854 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
1855 } else {
1856 spin_lock_irq(shost->host_lock);
1857 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
1858 spin_unlock_irq(shost->host_lock);
1859 }
1860 return ndlp->nlp_state;
1861 }
1862
1863 static uint32_t
1864 lpfc_cmpl_plogi_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1865 void *arg, uint32_t evt)
1866 {
1867 struct lpfc_iocbq *cmdiocb, *rspiocb;
1868 IOCB_t *irsp;
1869
1870 cmdiocb = (struct lpfc_iocbq *) arg;
1871 rspiocb = cmdiocb->context_un.rsp_iocb;
1872
1873 irsp = &rspiocb->iocb;
1874 if (irsp->ulpStatus) {
1875 ndlp->nlp_flag |= NLP_DEFER_RM;
1876 return NLP_STE_FREED_NODE;
1877 }
1878 return ndlp->nlp_state;
1879 }
1880
1881 static uint32_t
1882 lpfc_cmpl_prli_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1883 void *arg, uint32_t evt)
1884 {
1885 struct lpfc_iocbq *cmdiocb, *rspiocb;
1886 IOCB_t *irsp;
1887
1888 cmdiocb = (struct lpfc_iocbq *) arg;
1889 rspiocb = cmdiocb->context_un.rsp_iocb;
1890
1891 irsp = &rspiocb->iocb;
1892 if (irsp->ulpStatus && (ndlp->nlp_flag & NLP_NODEV_REMOVE)) {
1893 lpfc_drop_node(vport, ndlp);
1894 return NLP_STE_FREED_NODE;
1895 }
1896 return ndlp->nlp_state;
1897 }
1898
1899 static uint32_t
1900 lpfc_cmpl_logo_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1901 void *arg, uint32_t evt)
1902 {
1903 lpfc_unreg_rpi(vport, ndlp);
1904 /* This routine does nothing, just return the current state */
1905 return ndlp->nlp_state;
1906 }
1907
1908 static uint32_t
1909 lpfc_cmpl_adisc_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1910 void *arg, uint32_t evt)
1911 {
1912 struct lpfc_iocbq *cmdiocb, *rspiocb;
1913 IOCB_t *irsp;
1914
1915 cmdiocb = (struct lpfc_iocbq *) arg;
1916 rspiocb = cmdiocb->context_un.rsp_iocb;
1917
1918 irsp = &rspiocb->iocb;
1919 if (irsp->ulpStatus && (ndlp->nlp_flag & NLP_NODEV_REMOVE)) {
1920 lpfc_drop_node(vport, ndlp);
1921 return NLP_STE_FREED_NODE;
1922 }
1923 return ndlp->nlp_state;
1924 }
1925
1926 static uint32_t
1927 lpfc_cmpl_reglogin_npr_node(struct lpfc_vport *vport,
1928 struct lpfc_nodelist *ndlp,
1929 void *arg, uint32_t evt)
1930 {
1931 LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg;
1932 MAILBOX_t *mb = &pmb->mb;
1933
1934 if (!mb->mbxStatus)
1935 ndlp->nlp_rpi = mb->un.varWords[0];
1936 else {
1937 if (ndlp->nlp_flag & NLP_NODEV_REMOVE) {
1938 lpfc_drop_node(vport, ndlp);
1939 return NLP_STE_FREED_NODE;
1940 }
1941 }
1942 return ndlp->nlp_state;
1943 }
1944
1945 static uint32_t
1946 lpfc_device_rm_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1947 void *arg, uint32_t evt)
1948 {
1949 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1950
1951 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1952 spin_lock_irq(shost->host_lock);
1953 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1954 spin_unlock_irq(shost->host_lock);
1955 return ndlp->nlp_state;
1956 }
1957 lpfc_drop_node(vport, ndlp);
1958 return NLP_STE_FREED_NODE;
1959 }
1960
1961 static uint32_t
1962 lpfc_device_recov_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1963 void *arg, uint32_t evt)
1964 {
1965 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1966
1967 /* Don't do anything that will mess up processing of the
1968 * previous RSCN.
1969 */
1970 if (vport->fc_flag & FC_RSCN_DEFERRED)
1971 return ndlp->nlp_state;
1972
1973 spin_lock_irq(shost->host_lock);
1974 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1975 spin_unlock_irq(shost->host_lock);
1976 if (ndlp->nlp_flag & NLP_DELAY_TMO) {
1977 lpfc_cancel_retry_delay_tmo(vport, ndlp);
1978 }
1979 return ndlp->nlp_state;
1980 }
1981
1982
1983 /* This next section defines the NPort Discovery State Machine */
1984
1985 /* There are 4 different double linked lists nodelist entries can reside on.
1986 * The plogi list and adisc list are used when Link Up discovery or RSCN
1987 * processing is needed. Each list holds the nodes that we will send PLOGI
1988 * or ADISC on. These lists will keep track of what nodes will be effected
1989 * by an RSCN, or a Link Up (Typically, all nodes are effected on Link Up).
1990 * The unmapped_list will contain all nodes that we have successfully logged
1991 * into at the Fibre Channel level. The mapped_list will contain all nodes
1992 * that are mapped FCP targets.
1993 */
1994 /*
1995 * The bind list is a list of undiscovered (potentially non-existent) nodes
1996 * that we have saved binding information on. This information is used when
1997 * nodes transition from the unmapped to the mapped list.
1998 */
1999 /* For UNUSED_NODE state, the node has just been allocated .
2000 * For PLOGI_ISSUE and REG_LOGIN_ISSUE, the node is on
2001 * the PLOGI list. For REG_LOGIN_COMPL, the node is taken off the PLOGI list
2002 * and put on the unmapped list. For ADISC processing, the node is taken off
2003 * the ADISC list and placed on either the mapped or unmapped list (depending
2004 * on its previous state). Once on the unmapped list, a PRLI is issued and the
2005 * state changed to PRLI_ISSUE. When the PRLI completion occurs, the state is
2006 * changed to UNMAPPED_NODE. If the completion indicates a mapped
2007 * node, the node is taken off the unmapped list. The binding list is checked
2008 * for a valid binding, or a binding is automatically assigned. If binding
2009 * assignment is unsuccessful, the node is left on the unmapped list. If
2010 * binding assignment is successful, the associated binding list entry (if
2011 * any) is removed, and the node is placed on the mapped list.
2012 */
2013 /*
2014 * For a Link Down, all nodes on the ADISC, PLOGI, unmapped or mapped
2015 * lists will receive a DEVICE_RECOVERY event. If the linkdown or devloss timers
2016 * expire, all effected nodes will receive a DEVICE_RM event.
2017 */
2018 /*
2019 * For a Link Up or RSCN, all nodes will move from the mapped / unmapped lists
2020 * to either the ADISC or PLOGI list. After a Nameserver query or ALPA loopmap
2021 * check, additional nodes may be added or removed (via DEVICE_RM) to / from
2022 * the PLOGI or ADISC lists. Once the PLOGI and ADISC lists are populated,
2023 * we will first process the ADISC list. 32 entries are processed initially and
2024 * ADISC is initited for each one. Completions / Events for each node are
2025 * funnelled thru the state machine. As each node finishes ADISC processing, it
2026 * starts ADISC for any nodes waiting for ADISC processing. If no nodes are
2027 * waiting, and the ADISC list count is identically 0, then we are done. For
2028 * Link Up discovery, since all nodes on the PLOGI list are UNREG_LOGIN'ed, we
2029 * can issue a CLEAR_LA and reenable Link Events. Next we will process the PLOGI
2030 * list. 32 entries are processed initially and PLOGI is initited for each one.
2031 * Completions / Events for each node are funnelled thru the state machine. As
2032 * each node finishes PLOGI processing, it starts PLOGI for any nodes waiting
2033 * for PLOGI processing. If no nodes are waiting, and the PLOGI list count is
2034 * indentically 0, then we are done. We have now completed discovery / RSCN
2035 * handling. Upon completion, ALL nodes should be on either the mapped or
2036 * unmapped lists.
2037 */
2038
2039 static uint32_t (*lpfc_disc_action[NLP_STE_MAX_STATE * NLP_EVT_MAX_EVENT])
2040 (struct lpfc_vport *, struct lpfc_nodelist *, void *, uint32_t) = {
2041 /* Action routine Event Current State */
2042 lpfc_rcv_plogi_unused_node, /* RCV_PLOGI UNUSED_NODE */
2043 lpfc_rcv_els_unused_node, /* RCV_PRLI */
2044 lpfc_rcv_logo_unused_node, /* RCV_LOGO */
2045 lpfc_rcv_els_unused_node, /* RCV_ADISC */
2046 lpfc_rcv_els_unused_node, /* RCV_PDISC */
2047 lpfc_rcv_els_unused_node, /* RCV_PRLO */
2048 lpfc_disc_illegal, /* CMPL_PLOGI */
2049 lpfc_disc_illegal, /* CMPL_PRLI */
2050 lpfc_cmpl_logo_unused_node, /* CMPL_LOGO */
2051 lpfc_disc_illegal, /* CMPL_ADISC */
2052 lpfc_disc_illegal, /* CMPL_REG_LOGIN */
2053 lpfc_device_rm_unused_node, /* DEVICE_RM */
2054 lpfc_disc_illegal, /* DEVICE_RECOVERY */
2055
2056 lpfc_rcv_plogi_plogi_issue, /* RCV_PLOGI PLOGI_ISSUE */
2057 lpfc_rcv_prli_plogi_issue, /* RCV_PRLI */
2058 lpfc_rcv_logo_plogi_issue, /* RCV_LOGO */
2059 lpfc_rcv_els_plogi_issue, /* RCV_ADISC */
2060 lpfc_rcv_els_plogi_issue, /* RCV_PDISC */
2061 lpfc_rcv_els_plogi_issue, /* RCV_PRLO */
2062 lpfc_cmpl_plogi_plogi_issue, /* CMPL_PLOGI */
2063 lpfc_disc_illegal, /* CMPL_PRLI */
2064 lpfc_cmpl_logo_plogi_issue, /* CMPL_LOGO */
2065 lpfc_disc_illegal, /* CMPL_ADISC */
2066 lpfc_cmpl_reglogin_plogi_issue,/* CMPL_REG_LOGIN */
2067 lpfc_device_rm_plogi_issue, /* DEVICE_RM */
2068 lpfc_device_recov_plogi_issue, /* DEVICE_RECOVERY */
2069
2070 lpfc_rcv_plogi_adisc_issue, /* RCV_PLOGI ADISC_ISSUE */
2071 lpfc_rcv_prli_adisc_issue, /* RCV_PRLI */
2072 lpfc_rcv_logo_adisc_issue, /* RCV_LOGO */
2073 lpfc_rcv_padisc_adisc_issue, /* RCV_ADISC */
2074 lpfc_rcv_padisc_adisc_issue, /* RCV_PDISC */
2075 lpfc_rcv_prlo_adisc_issue, /* RCV_PRLO */
2076 lpfc_disc_illegal, /* CMPL_PLOGI */
2077 lpfc_disc_illegal, /* CMPL_PRLI */
2078 lpfc_disc_illegal, /* CMPL_LOGO */
2079 lpfc_cmpl_adisc_adisc_issue, /* CMPL_ADISC */
2080 lpfc_disc_illegal, /* CMPL_REG_LOGIN */
2081 lpfc_device_rm_adisc_issue, /* DEVICE_RM */
2082 lpfc_device_recov_adisc_issue, /* DEVICE_RECOVERY */
2083
2084 lpfc_rcv_plogi_reglogin_issue, /* RCV_PLOGI REG_LOGIN_ISSUE */
2085 lpfc_rcv_prli_reglogin_issue, /* RCV_PLOGI */
2086 lpfc_rcv_logo_reglogin_issue, /* RCV_LOGO */
2087 lpfc_rcv_padisc_reglogin_issue, /* RCV_ADISC */
2088 lpfc_rcv_padisc_reglogin_issue, /* RCV_PDISC */
2089 lpfc_rcv_prlo_reglogin_issue, /* RCV_PRLO */
2090 lpfc_cmpl_plogi_illegal, /* CMPL_PLOGI */
2091 lpfc_disc_illegal, /* CMPL_PRLI */
2092 lpfc_disc_illegal, /* CMPL_LOGO */
2093 lpfc_disc_illegal, /* CMPL_ADISC */
2094 lpfc_cmpl_reglogin_reglogin_issue,/* CMPL_REG_LOGIN */
2095 lpfc_device_rm_reglogin_issue, /* DEVICE_RM */
2096 lpfc_device_recov_reglogin_issue,/* DEVICE_RECOVERY */
2097
2098 lpfc_rcv_plogi_prli_issue, /* RCV_PLOGI PRLI_ISSUE */
2099 lpfc_rcv_prli_prli_issue, /* RCV_PRLI */
2100 lpfc_rcv_logo_prli_issue, /* RCV_LOGO */
2101 lpfc_rcv_padisc_prli_issue, /* RCV_ADISC */
2102 lpfc_rcv_padisc_prli_issue, /* RCV_PDISC */
2103 lpfc_rcv_prlo_prli_issue, /* RCV_PRLO */
2104 lpfc_cmpl_plogi_illegal, /* CMPL_PLOGI */
2105 lpfc_cmpl_prli_prli_issue, /* CMPL_PRLI */
2106 lpfc_disc_illegal, /* CMPL_LOGO */
2107 lpfc_disc_illegal, /* CMPL_ADISC */
2108 lpfc_disc_illegal, /* CMPL_REG_LOGIN */
2109 lpfc_device_rm_prli_issue, /* DEVICE_RM */
2110 lpfc_device_recov_prli_issue, /* DEVICE_RECOVERY */
2111
2112 lpfc_rcv_plogi_unmap_node, /* RCV_PLOGI UNMAPPED_NODE */
2113 lpfc_rcv_prli_unmap_node, /* RCV_PRLI */
2114 lpfc_rcv_logo_unmap_node, /* RCV_LOGO */
2115 lpfc_rcv_padisc_unmap_node, /* RCV_ADISC */
2116 lpfc_rcv_padisc_unmap_node, /* RCV_PDISC */
2117 lpfc_rcv_prlo_unmap_node, /* RCV_PRLO */
2118 lpfc_disc_illegal, /* CMPL_PLOGI */
2119 lpfc_disc_illegal, /* CMPL_PRLI */
2120 lpfc_disc_illegal, /* CMPL_LOGO */
2121 lpfc_disc_illegal, /* CMPL_ADISC */
2122 lpfc_disc_illegal, /* CMPL_REG_LOGIN */
2123 lpfc_disc_illegal, /* DEVICE_RM */
2124 lpfc_device_recov_unmap_node, /* DEVICE_RECOVERY */
2125
2126 lpfc_rcv_plogi_mapped_node, /* RCV_PLOGI MAPPED_NODE */
2127 lpfc_rcv_prli_mapped_node, /* RCV_PRLI */
2128 lpfc_rcv_logo_mapped_node, /* RCV_LOGO */
2129 lpfc_rcv_padisc_mapped_node, /* RCV_ADISC */
2130 lpfc_rcv_padisc_mapped_node, /* RCV_PDISC */
2131 lpfc_rcv_prlo_mapped_node, /* RCV_PRLO */
2132 lpfc_disc_illegal, /* CMPL_PLOGI */
2133 lpfc_disc_illegal, /* CMPL_PRLI */
2134 lpfc_disc_illegal, /* CMPL_LOGO */
2135 lpfc_disc_illegal, /* CMPL_ADISC */
2136 lpfc_disc_illegal, /* CMPL_REG_LOGIN */
2137 lpfc_disc_illegal, /* DEVICE_RM */
2138 lpfc_device_recov_mapped_node, /* DEVICE_RECOVERY */
2139
2140 lpfc_rcv_plogi_npr_node, /* RCV_PLOGI NPR_NODE */
2141 lpfc_rcv_prli_npr_node, /* RCV_PRLI */
2142 lpfc_rcv_logo_npr_node, /* RCV_LOGO */
2143 lpfc_rcv_padisc_npr_node, /* RCV_ADISC */
2144 lpfc_rcv_padisc_npr_node, /* RCV_PDISC */
2145 lpfc_rcv_prlo_npr_node, /* RCV_PRLO */
2146 lpfc_cmpl_plogi_npr_node, /* CMPL_PLOGI */
2147 lpfc_cmpl_prli_npr_node, /* CMPL_PRLI */
2148 lpfc_cmpl_logo_npr_node, /* CMPL_LOGO */
2149 lpfc_cmpl_adisc_npr_node, /* CMPL_ADISC */
2150 lpfc_cmpl_reglogin_npr_node, /* CMPL_REG_LOGIN */
2151 lpfc_device_rm_npr_node, /* DEVICE_RM */
2152 lpfc_device_recov_npr_node, /* DEVICE_RECOVERY */
2153 };
2154
2155 int
2156 lpfc_disc_state_machine(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2157 void *arg, uint32_t evt)
2158 {
2159 uint32_t cur_state, rc;
2160 uint32_t(*func) (struct lpfc_vport *, struct lpfc_nodelist *, void *,
2161 uint32_t);
2162 uint32_t got_ndlp = 0;
2163
2164 if (lpfc_nlp_get(ndlp))
2165 got_ndlp = 1;
2166
2167 cur_state = ndlp->nlp_state;
2168
2169 /* DSM in event <evt> on NPort <nlp_DID> in state <cur_state> */
2170 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
2171 "0211 DSM in event x%x on NPort x%x in "
2172 "state %d Data: x%x\n",
2173 evt, ndlp->nlp_DID, cur_state, ndlp->nlp_flag);
2174
2175 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_DSM,
2176 "DSM in: evt:%d ste:%d did:x%x",
2177 evt, cur_state, ndlp->nlp_DID);
2178
2179 func = lpfc_disc_action[(cur_state * NLP_EVT_MAX_EVENT) + evt];
2180 rc = (func) (vport, ndlp, arg, evt);
2181
2182 /* DSM out state <rc> on NPort <nlp_DID> */
2183 if (got_ndlp) {
2184 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
2185 "0212 DSM out state %d on NPort x%x Data: x%x\n",
2186 rc, ndlp->nlp_DID, ndlp->nlp_flag);
2187
2188 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_DSM,
2189 "DSM out: ste:%d did:x%x flg:x%x",
2190 rc, ndlp->nlp_DID, ndlp->nlp_flag);
2191 /* Decrement the ndlp reference count held for this function */
2192 lpfc_nlp_put(ndlp);
2193 } else {
2194 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
2195 "0212 DSM out state %d on NPort free\n", rc);
2196
2197 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_DSM,
2198 "DSM out: ste:%d did:x%x flg:x%x",
2199 rc, 0, 0);
2200 }
2201
2202 return rc;
2203 }
Linux 2.6 libata-dev (mirror)